/uspace/trunk/libc/include/unistd.h |
---|
0,0 → 1,42 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__UNISTD_H__ |
#define __LIBC__UNISTD_H__ |
#include <types.h> |
#define NULL 0 |
extern ssize_t write(int fd, const void * buf, size_t count); |
extern void _exit(int status); |
void *mmap(void *address, size_t size, int flags); |
void *mremap(void *address, size_t size, int flags); |
void *sbrk(ssize_t incr); |
#endif |
/uspace/trunk/libc/include/endian.h |
---|
0,0 → 1,39 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__ENDIANS_H__ |
#define __LIBC__ENDIANS_H__ |
#define __LITTLE_ENDIAN 1234 |
#define __BIG_ENDIAN 4321 |
#define __PDP_ENDIAN 3412 |
/* TODO: move it to arch dependent directory */ |
#define __BYTE_ORDER __LITTLE_ENDIAN |
#endif |
/uspace/trunk/libc/include/stdint.h |
---|
0,0 → 1,56 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STDINT_H__ |
#define __LIBC__STDINT_H__ |
/* Definitions of types with fixed size*/ |
#include<types.h> |
#define MAX_INT8 (0x7F) |
#define MIN_INT8 (0x80) |
#define MAX_UINT8 (0xFFu) |
#define MIN_UINT8 (0u) |
#define MAX_INT16 (0x7FFF) |
#define MIN_INT16 (0x8000) |
#define MAX_UINT16 (0xFFFFu) |
#define MIN_UINT16 (0u) |
#define MAX_INT32 (0x7FFFFFFF) |
#define MIN_INT32 (0x80000000) |
#define MAX_UINT32 (0xFFFFFFFFu) |
#define MIN_UINT32 (0u) |
#define MAX_INT64 (0x7FFFFFFFFFFFFFFFll) |
#define MIN_INT64 (0x8000000000000000ll) |
#define MAX_UINT64 (0xFFFFFFFFFFFFFFFFull) |
#define MIN_UINT64 (0ull) |
#endif |
/uspace/trunk/libc/include/stdarg.h |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STDARG_H__ |
#define __LIBC__STDARG_H__ |
#include<types.h> |
#include<stackarg.h> |
#ifndef __VARARGS_DEFINED |
# define __VARARGS_DEFINED |
typedef __builtin_va_list va_list; |
# define va_start(ap, last) __builtin_va_start(ap, last) |
# define va_arg(ap, type) __builtin_va_arg(ap, type) |
# define va_end(ap) __builtin_va_end(ap) |
# endif |
#endif |
/uspace/trunk/libc/include/string.h |
---|
0,0 → 1,36 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STRING_H__ |
#define __LIBC__STRING_H__ |
void * memset(void *s, int c, size_t n); |
void * memcpy(void *dest, void *src, size_t n); |
#endif |
/uspace/trunk/libc/include/assert.h |
---|
0,0 → 1,50 |
/* |
* Copyright (C) 2005 Martin Decky |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__ASSERT_H__ |
#define __LIBC__ASSERT_H__ |
/** Debugging assert macro |
* |
* If NDEBUG is not set, the assert() macro |
* evaluates expr and if it is false prints |
* error message and terminate program. |
* |
* @param expr Expression which is expected to be true. |
* |
*/ |
#include <stdlib.h> |
#ifndef NDEBUG |
# define assert(expr) if (!(expr)) { printf("Assertion failed (%s) at file '%s', line %d.\n", #expr, __FILE__, __LINE__); abort();} |
#else |
# define assert(expr) |
#endif |
#endif |
/uspace/trunk/libc/include/stdlib.h |
---|
0,0 → 1,36 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STDLIB_H__ |
#define __LIBC__STDLIB_H__ |
#include <malloc.h> |
#define abort() _exit(1) |
#endif |
/uspace/trunk/libc/include/stdio.h |
---|
0,0 → 1,41 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STDIO_H__ |
#define __LIBC__STDIO_H__ |
#include <types.h> |
#define EOF (-1) |
extern int puts(const char * str); |
extern int printf(const char *fmt, ...); |
#define fprintf(f, fmt, ...) printf(fmt, ##__VA_ARGS__) |
#endif |
/uspace/trunk/libc/include/errno.h |
---|
0,0 → 1,36 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__ERRNO_H__ |
#define __LIBC__ERRNO_H__ |
#include <kernel/errno.h> |
#endif |
/uspace/trunk/libc/include/malloc.h |
---|
0,0 → 1,531 |
/* |
Default header file for malloc-2.8.x, written by Doug Lea |
and released to the public domain, as explained at |
http://creativecommons.org/licenses/publicdomain. |
last update: Mon Aug 15 08:55:52 2005 Doug Lea (dl at gee) |
This header is for ANSI C/C++ only. You can set any of |
the following #defines before including: |
* If USE_DL_PREFIX is defined, it is assumed that malloc.c |
was also compiled with this option, so all routines |
have names starting with "dl". |
* If HAVE_USR_INCLUDE_MALLOC_H is defined, it is assumed that this |
file will be #included AFTER <malloc.h>. This is needed only if |
your system defines a struct mallinfo that is incompatible with the |
standard one declared here. Otherwise, you can include this file |
INSTEAD of your system system <malloc.h>. At least on ANSI, all |
declarations should be compatible with system versions |
* If MSPACES is defined, declarations for mspace versions are included. |
*/ |
#ifndef MALLOC_280_H |
#define MALLOC_280_H |
#ifdef __cplusplus |
extern "C" { |
#endif |
#include <stddef.h> /* for size_t */ |
#if !ONLY_MSPACES |
#ifndef USE_DL_PREFIX |
#define dlcalloc calloc |
#define dlfree free |
#define dlmalloc malloc |
#define dlmemalign memalign |
#define dlrealloc realloc |
#define dlvalloc valloc |
#define dlpvalloc pvalloc |
#define dlmallinfo mallinfo |
#define dlmallopt mallopt |
#define dlmalloc_trim malloc_trim |
#define dlmalloc_stats malloc_stats |
#define dlmalloc_usable_size malloc_usable_size |
#define dlmalloc_footprint malloc_footprint |
#define dlmalloc_max_footprint malloc_max_footprint |
#define dlindependent_calloc independent_calloc |
#define dlindependent_comalloc independent_comalloc |
#endif /* USE_DL_PREFIX */ |
/* |
malloc(size_t n) |
Returns a pointer to a newly allocated chunk of at least n bytes, or |
null if no space is available, in which case errno is set to ENOMEM |
on ANSI C systems. |
If n is zero, malloc returns a minimum-sized chunk. (The minimum |
size is 16 bytes on most 32bit systems, and 32 bytes on 64bit |
systems.) Note that size_t is an unsigned type, so calls with |
arguments that would be negative if signed are interpreted as |
requests for huge amounts of space, which will often fail. The |
maximum supported value of n differs across systems, but is in all |
cases less than the maximum representable value of a size_t. |
*/ |
void* dlmalloc(size_t); |
/* |
free(void* p) |
Releases the chunk of memory pointed to by p, that had been previously |
allocated using malloc or a related routine such as realloc. |
It has no effect if p is null. If p was not malloced or already |
freed, free(p) will by default cuase the current program to abort. |
*/ |
void dlfree(void*); |
/* |
calloc(size_t n_elements, size_t element_size); |
Returns a pointer to n_elements * element_size bytes, with all locations |
set to zero. |
*/ |
void* dlcalloc(size_t, size_t); |
/* |
realloc(void* p, size_t n) |
Returns a pointer to a chunk of size n that contains the same data |
as does chunk p up to the minimum of (n, p's size) bytes, or null |
if no space is available. |
The returned pointer may or may not be the same as p. The algorithm |
prefers extending p in most cases when possible, otherwise it |
employs the equivalent of a malloc-copy-free sequence. |
If p is null, realloc is equivalent to malloc. |
If space is not available, realloc returns null, errno is set (if on |
ANSI) and p is NOT freed. |
if n is for fewer bytes than already held by p, the newly unused |
space is lopped off and freed if possible. realloc with a size |
argument of zero (re)allocates a minimum-sized chunk. |
The old unix realloc convention of allowing the last-free'd chunk |
to be used as an argument to realloc is not supported. |
*/ |
void* dlrealloc(void*, size_t); |
/* |
memalign(size_t alignment, size_t n); |
Returns a pointer to a newly allocated chunk of n bytes, aligned |
in accord with the alignment argument. |
The alignment argument should be a power of two. If the argument is |
not a power of two, the nearest greater power is used. |
8-byte alignment is guaranteed by normal malloc calls, so don't |
bother calling memalign with an argument of 8 or less. |
Overreliance on memalign is a sure way to fragment space. |
*/ |
void* dlmemalign(size_t, size_t); |
/* |
valloc(size_t n); |
Equivalent to memalign(pagesize, n), where pagesize is the page |
size of the system. If the pagesize is unknown, 4096 is used. |
*/ |
void* dlvalloc(size_t); |
/* |
mallopt(int parameter_number, int parameter_value) |
Sets tunable parameters The format is to provide a |
(parameter-number, parameter-value) pair. mallopt then sets the |
corresponding parameter to the argument value if it can (i.e., so |
long as the value is meaningful), and returns 1 if successful else |
0. SVID/XPG/ANSI defines four standard param numbers for mallopt, |
normally defined in malloc.h. None of these are use in this malloc, |
so setting them has no effect. But this malloc also supports other |
options in mallopt: |
Symbol param # default allowed param values |
M_TRIM_THRESHOLD -1 2*1024*1024 any (-1U disables trimming) |
M_GRANULARITY -2 page size any power of 2 >= page size |
M_MMAP_THRESHOLD -3 256*1024 any (or 0 if no MMAP support) |
*/ |
int dlmallopt(int, int); |
#define M_TRIM_THRESHOLD (-1) |
#define M_GRANULARITY (-2) |
#define M_MMAP_THRESHOLD (-3) |
/* |
malloc_footprint(); |
Returns the number of bytes obtained from the system. The total |
number of bytes allocated by malloc, realloc etc., is less than this |
value. Unlike mallinfo, this function returns only a precomputed |
result, so can be called frequently to monitor memory consumption. |
Even if locks are otherwise defined, this function does not use them, |
so results might not be up to date. |
*/ |
size_t dlmalloc_footprint(void); |
size_t dlmalloc_max_footprint(void); |
#if !NO_MALLINFO |
/* |
mallinfo() |
Returns (by copy) a struct containing various summary statistics: |
arena: current total non-mmapped bytes allocated from system |
ordblks: the number of free chunks |
smblks: always zero. |
hblks: current number of mmapped regions |
hblkhd: total bytes held in mmapped regions |
usmblks: the maximum total allocated space. This will be greater |
than current total if trimming has occurred. |
fsmblks: always zero |
uordblks: current total allocated space (normal or mmapped) |
fordblks: total free space |
keepcost: the maximum number of bytes that could ideally be released |
back to system via malloc_trim. ("ideally" means that |
it ignores page restrictions etc.) |
Because these fields are ints, but internal bookkeeping may |
be kept as longs, the reported values may wrap around zero and |
thus be inaccurate. |
*/ |
#ifndef HAVE_USR_INCLUDE_MALLOC_H |
#ifndef _MALLOC_H |
#ifndef MALLINFO_FIELD_TYPE |
#define MALLINFO_FIELD_TYPE size_t |
#endif /* MALLINFO_FIELD_TYPE */ |
struct mallinfo { |
MALLINFO_FIELD_TYPE arena; /* non-mmapped space allocated from system */ |
MALLINFO_FIELD_TYPE ordblks; /* number of free chunks */ |
MALLINFO_FIELD_TYPE smblks; /* always 0 */ |
MALLINFO_FIELD_TYPE hblks; /* always 0 */ |
MALLINFO_FIELD_TYPE hblkhd; /* space in mmapped regions */ |
MALLINFO_FIELD_TYPE usmblks; /* maximum total allocated space */ |
MALLINFO_FIELD_TYPE fsmblks; /* always 0 */ |
MALLINFO_FIELD_TYPE uordblks; /* total allocated space */ |
MALLINFO_FIELD_TYPE fordblks; /* total free space */ |
MALLINFO_FIELD_TYPE keepcost; /* releasable (via malloc_trim) space */ |
}; |
#endif /* _MALLOC_H */ |
#endif /* HAVE_USR_INCLUDE_MALLOC_H */ |
struct mallinfo dlmallinfo(void); |
#endif /* NO_MALLINFO */ |
/* |
independent_calloc(size_t n_elements, size_t element_size, void* chunks[]); |
independent_calloc is similar to calloc, but instead of returning a |
single cleared space, it returns an array of pointers to n_elements |
independent elements that can hold contents of size elem_size, each |
of which starts out cleared, and can be independently freed, |
realloc'ed etc. The elements are guaranteed to be adjacently |
allocated (this is not guaranteed to occur with multiple callocs or |
mallocs), which may also improve cache locality in some |
applications. |
The "chunks" argument is optional (i.e., may be null, which is |
probably the most typical usage). If it is null, the returned array |
is itself dynamically allocated and should also be freed when it is |
no longer needed. Otherwise, the chunks array must be of at least |
n_elements in length. It is filled in with the pointers to the |
chunks. |
In either case, independent_calloc returns this pointer array, or |
null if the allocation failed. If n_elements is zero and "chunks" |
is null, it returns a chunk representing an array with zero elements |
(which should be freed if not wanted). |
Each element must be individually freed when it is no longer |
needed. If you'd like to instead be able to free all at once, you |
should instead use regular calloc and assign pointers into this |
space to represent elements. (In this case though, you cannot |
independently free elements.) |
independent_calloc simplifies and speeds up implementations of many |
kinds of pools. It may also be useful when constructing large data |
structures that initially have a fixed number of fixed-sized nodes, |
but the number is not known at compile time, and some of the nodes |
may later need to be freed. For example: |
struct Node { int item; struct Node* next; }; |
struct Node* build_list() { |
struct Node** pool; |
int n = read_number_of_nodes_needed(); |
if (n <= 0) return 0; |
pool = (struct Node**)(independent_calloc(n, sizeof(struct Node), 0); |
if (pool == 0) die(); |
// organize into a linked list... |
struct Node* first = pool[0]; |
for (i = 0; i < n-1; ++i) |
pool[i]->next = pool[i+1]; |
free(pool); // Can now free the array (or not, if it is needed later) |
return first; |
} |
*/ |
void** dlindependent_calloc(size_t, size_t, void**); |
/* |
independent_comalloc(size_t n_elements, size_t sizes[], void* chunks[]); |
independent_comalloc allocates, all at once, a set of n_elements |
chunks with sizes indicated in the "sizes" array. It returns |
an array of pointers to these elements, each of which can be |
independently freed, realloc'ed etc. The elements are guaranteed to |
be adjacently allocated (this is not guaranteed to occur with |
multiple callocs or mallocs), which may also improve cache locality |
in some applications. |
The "chunks" argument is optional (i.e., may be null). If it is null |
the returned array is itself dynamically allocated and should also |
be freed when it is no longer needed. Otherwise, the chunks array |
must be of at least n_elements in length. It is filled in with the |
pointers to the chunks. |
In either case, independent_comalloc returns this pointer array, or |
null if the allocation failed. If n_elements is zero and chunks is |
null, it returns a chunk representing an array with zero elements |
(which should be freed if not wanted). |
Each element must be individually freed when it is no longer |
needed. If you'd like to instead be able to free all at once, you |
should instead use a single regular malloc, and assign pointers at |
particular offsets in the aggregate space. (In this case though, you |
cannot independently free elements.) |
independent_comallac differs from independent_calloc in that each |
element may have a different size, and also that it does not |
automatically clear elements. |
independent_comalloc can be used to speed up allocation in cases |
where several structs or objects must always be allocated at the |
same time. For example: |
struct Head { ... } |
struct Foot { ... } |
void send_message(char* msg) { |
int msglen = strlen(msg); |
size_t sizes[3] = { sizeof(struct Head), msglen, sizeof(struct Foot) }; |
void* chunks[3]; |
if (independent_comalloc(3, sizes, chunks) == 0) |
die(); |
struct Head* head = (struct Head*)(chunks[0]); |
char* body = (char*)(chunks[1]); |
struct Foot* foot = (struct Foot*)(chunks[2]); |
// ... |
} |
In general though, independent_comalloc is worth using only for |
larger values of n_elements. For small values, you probably won't |
detect enough difference from series of malloc calls to bother. |
Overuse of independent_comalloc can increase overall memory usage, |
since it cannot reuse existing noncontiguous small chunks that |
might be available for some of the elements. |
*/ |
void** dlindependent_comalloc(size_t, size_t*, void**); |
/* |
pvalloc(size_t n); |
Equivalent to valloc(minimum-page-that-holds(n)), that is, |
round up n to nearest pagesize. |
*/ |
void* dlpvalloc(size_t); |
/* |
malloc_trim(size_t pad); |
If possible, gives memory back to the system (via negative arguments |
to sbrk) if there is unused memory at the `high' end of the malloc |
pool or in unused MMAP segments. You can call this after freeing |
large blocks of memory to potentially reduce the system-level memory |
requirements of a program. However, it cannot guarantee to reduce |
memory. Under some allocation patterns, some large free blocks of |
memory will be locked between two used chunks, so they cannot be |
given back to the system. |
The `pad' argument to malloc_trim represents the amount of free |
trailing space to leave untrimmed. If this argument is zero, only |
the minimum amount of memory to maintain internal data structures |
will be left. Non-zero arguments can be supplied to maintain enough |
trailing space to service future expected allocations without having |
to re-obtain memory from the system. |
Malloc_trim returns 1 if it actually released any memory, else 0. |
*/ |
int dlmalloc_trim(size_t); |
/* |
malloc_usable_size(void* p); |
Returns the number of bytes you can actually use in |
an allocated chunk, which may be more than you requested (although |
often not) due to alignment and minimum size constraints. |
You can use this many bytes without worrying about |
overwriting other allocated objects. This is not a particularly great |
programming practice. malloc_usable_size can be more useful in |
debugging and assertions, for example: |
p = malloc(n); |
assert(malloc_usable_size(p) >= 256); |
*/ |
size_t dlmalloc_usable_size(void*); |
/* |
malloc_stats(); |
Prints on stderr the amount of space obtained from the system (both |
via sbrk and mmap), the maximum amount (which may be more than |
current if malloc_trim and/or munmap got called), and the current |
number of bytes allocated via malloc (or realloc, etc) but not yet |
freed. Note that this is the number of bytes allocated, not the |
number requested. It will be larger than the number requested |
because of alignment and bookkeeping overhead. Because it includes |
alignment wastage as being in use, this figure may be greater than |
zero even when no user-level chunks are allocated. |
The reported current and maximum system memory can be inaccurate if |
a program makes other calls to system memory allocation functions |
(normally sbrk) outside of malloc. |
malloc_stats prints only the most commonly interesting statistics. |
More information can be obtained by calling mallinfo. |
*/ |
void dlmalloc_stats(void); |
#endif /* !ONLY_MSPACES */ |
#if MSPACES |
/* |
mspace is an opaque type representing an independent |
region of space that supports mspace_malloc, etc. |
*/ |
typedef void* mspace; |
/* |
create_mspace creates and returns a new independent space with the |
given initial capacity, or, if 0, the default granularity size. It |
returns null if there is no system memory available to create the |
space. If argument locked is non-zero, the space uses a separate |
lock to control access. The capacity of the space will grow |
dynamically as needed to service mspace_malloc requests. You can |
control the sizes of incremental increases of this space by |
compiling with a different DEFAULT_GRANULARITY or dynamically |
setting with mallopt(M_GRANULARITY, value). |
*/ |
mspace create_mspace(size_t capacity, int locked); |
/* |
destroy_mspace destroys the given space, and attempts to return all |
of its memory back to the system, returning the total number of |
bytes freed. After destruction, the results of access to all memory |
used by the space become undefined. |
*/ |
size_t destroy_mspace(mspace msp); |
/* |
create_mspace_with_base uses the memory supplied as the initial base |
of a new mspace. Part (less than 128*sizeof(size_t) bytes) of this |
space is used for bookkeeping, so the capacity must be at least this |
large. (Otherwise 0 is returned.) When this initial space is |
exhausted, additional memory will be obtained from the system. |
Destroying this space will deallocate all additionally allocated |
space (if possible) but not the initial base. |
*/ |
mspace create_mspace_with_base(void* base, size_t capacity, int locked); |
/* |
mspace_malloc behaves as malloc, but operates within |
the given space. |
*/ |
void* mspace_malloc(mspace msp, size_t bytes); |
/* |
mspace_free behaves as free, but operates within |
the given space. |
If compiled with FOOTERS==1, mspace_free is not actually needed. |
free may be called instead of mspace_free because freed chunks from |
any space are handled by their originating spaces. |
*/ |
void mspace_free(mspace msp, void* mem); |
/* |
mspace_realloc behaves as realloc, but operates within |
the given space. |
If compiled with FOOTERS==1, mspace_realloc is not actually |
needed. realloc may be called instead of mspace_realloc because |
realloced chunks from any space are handled by their originating |
spaces. |
*/ |
void* mspace_realloc(mspace msp, void* mem, size_t newsize); |
/* |
mspace_calloc behaves as calloc, but operates within |
the given space. |
*/ |
void* mspace_calloc(mspace msp, size_t n_elements, size_t elem_size); |
/* |
mspace_memalign behaves as memalign, but operates within |
the given space. |
*/ |
void* mspace_memalign(mspace msp, size_t alignment, size_t bytes); |
/* |
mspace_independent_calloc behaves as independent_calloc, but |
operates within the given space. |
*/ |
void** mspace_independent_calloc(mspace msp, size_t n_elements, |
size_t elem_size, void* chunks[]); |
/* |
mspace_independent_comalloc behaves as independent_comalloc, but |
operates within the given space. |
*/ |
void** mspace_independent_comalloc(mspace msp, size_t n_elements, |
size_t sizes[], void* chunks[]); |
/* |
mspace_footprint() returns the number of bytes obtained from the |
system for this space. |
*/ |
size_t mspace_footprint(mspace msp); |
#if !NO_MALLINFO |
/* |
mspace_mallinfo behaves as mallinfo, but reports properties of |
the given space. |
*/ |
struct mallinfo mspace_mallinfo(mspace msp); |
#endif /* NO_MALLINFO */ |
/* |
mspace_malloc_stats behaves as malloc_stats, but reports |
properties of the given space. |
*/ |
void mspace_malloc_stats(mspace msp); |
/* |
mspace_trim behaves as malloc_trim, but |
operates within the given space. |
*/ |
int mspace_trim(mspace msp, size_t pad); |
/* |
An alias for mallopt. |
*/ |
int mspace_mallopt(int, int); |
#endif /* MSPACES */ |
#ifdef __cplusplus |
}; /* end of extern "C" */ |
#endif |
#endif /* MALLOC_280_H */ |
/uspace/trunk/libc/include/sys/types.h |
---|
0,0 → 1,35 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__SYS_TYPES_H__ |
#define __LIBC__SYS_TYPES_H__ |
#include <types.h> |
#endif |
/uspace/trunk/libc/include/stddef.h |
---|
0,0 → 1,35 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STDDEF_H__ |
#define __LIBC__STDDEF_H__ |
#include <types.h> |
#endif |
/uspace/trunk/libc/include/io/io.h |
---|
0,0 → 1,37 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__IO_H__ |
#define __LIBC__IO_IO_H__ |
#include <types.h> |
int putnchars(const char * buf, size_t count); |
int putstr(const char * str); |
#endif |
/uspace/trunk/libc/include/libc.h |
---|
0,0 → 1,52 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__LIBC_H__ |
#define __LIBC__LIBC_H__ |
#include <types.h> |
#include <kernel/syscall/syscall.h> |
#include <kernel/arch/mm/page.h> |
#define __SYSCALL0(id) __syscall(0, 0, 0, 0, id) |
#define __SYSCALL1(id, p1) __syscall(p1, 0, 0, 0, id) |
#define __SYSCALL2(id, p1, p2) __syscall(p1, p2, 0, 0, id) |
#define __SYSCALL3(id, p1, p2, p3) __syscall(p1,p2,p3, 0, id) |
#define __SYSCALL4(id, p1, p2, p3, p4) __syscall(p1,p2,p3,p4,id) |
#define getpagesize() (PAGE_SIZE) |
extern void __main(void); |
extern void __exit(void); |
extern sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, |
const sysarg_t p3, const sysarg_t p4, |
const syscall_t id); |
#endif |
/uspace/trunk/libc/generic/mmap.c |
---|
0,0 → 1,91 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <libc.h> |
#include <unistd.h> |
/** mmap syscall |
* |
* @param address Virtual address where to place new address space area. |
* @param size Size of the area. |
* @param flags Flags describing type of the area. |
* |
* @return address on success, (void *) -1 otherwise. |
*/ |
void *mmap(void *address, size_t size, int flags) |
{ |
return (void *) __SYSCALL3(SYS_MMAP, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags); |
} |
/** mremap syscall |
* |
* @param address Virtual address pointing into already existing address space area. |
* @param size New requested size of the area. |
* @param flags Currently unused. |
* |
* @return address on success, (void *) -1 otherwise. |
*/ |
void *mremap(void *address, size_t size, int flags) |
{ |
return (void *) __SYSCALL3(SYS_MREMAP, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags); |
} |
static size_t heapsize = 0; |
/* Start of heap linker symbol */ |
extern char _heap; |
/** Sbrk emulation |
* |
* @param size New area that should be allocated or negative, |
if it should be shrinked |
* @return Pointer to newly allocated area |
*/ |
void *sbrk(ssize_t incr) |
{ |
void *res; |
/* Check for invalid values */ |
if (incr < 0 && -incr > heapsize) |
return NULL; |
/* Check for too large value */ |
if (incr > 0 && incr+heapsize < heapsize) |
return NULL; |
/* Check for too small values */ |
if (incr < 0 && incr+heapsize > heapsize) |
return NULL; |
res = mremap(&_heap, heapsize + incr,0); |
if (!res) |
return NULL; |
/* Compute start of new area */ |
res = (void *)&_heap + heapsize; |
heapsize += incr; |
return res; |
} |
/uspace/trunk/libc/generic/io/io.c |
---|
0,0 → 1,87 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <libc.h> |
#include <unistd.h> |
#include <stdio.h> |
#include <io/io.h> |
static char nl = '\n'; |
int puts(const char * str) |
{ |
size_t count; |
for (count = 0; str[count] != 0; count++); |
if (write(1, (void * ) str, count) == count) { |
if (write(1, &nl, 1) == 1) |
return 0; |
} |
return EOF; |
} |
/** Put count chars from buffer to stdout without adding newline |
* @param buf Buffer with size at least count bytes |
* @param count |
* @return 0 on succes, EOF on fail |
*/ |
int putnchars(const char * buf, size_t count) |
{ |
if (write(1, (void * ) buf, count) == count) { |
return 0; |
} |
return EOF; |
} |
/** Same as puts, but does not print newline at end |
* |
*/ |
int putstr(const char * str) |
{ |
size_t count; |
if (str == NULL) { |
return putnchars("(NULL)",6 ); |
} |
for (count = 0; str[count] != 0; count++); |
if (write(1, (void * ) str, count) == count) { |
return 0; |
} |
return EOF; |
} |
ssize_t write(int fd, const void * buf, size_t count) |
{ |
return (ssize_t) __SYSCALL3(SYS_IO, (sysarg_t) fd, (sysarg_t) buf, (sysarg_t) count); |
} |
/uspace/trunk/libc/generic/io/print.c |
---|
0,0 → 1,304 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <stdio.h> |
#include <unistd.h> |
#include <io/io.h> |
#include <stdarg.h> |
#define __PRINTF_FLAG_PREFIX 0x00000001 |
#define __PRINTF_FLAG_SIGNED 0x00000002 |
static char digits[] = "0123456789abcdef"; /**< Hexadecimal characters */ |
/** Print hexadecimal digits |
* |
* Print fixed count of hexadecimal digits from |
* the number num. The digits are printed in |
* natural left-to-right order starting with |
* the width-th digit. |
* |
* @param num Number containing digits. |
* @param width Count of digits to print. |
* |
*/ |
static int print_fixed_hex(const uint64_t num, const int width, uint64_t flags) |
{ |
int i; |
char buf[18]; /* 16 bytes for number + 2 for optionaly prefix */ |
char *bptr; |
bptr = buf; |
if (flags & __PRINTF_FLAG_PREFIX) { |
buf[0] = '0'; |
buf[1] = 'x'; |
bptr += 2; |
} |
for (i = width*8 - 4; i >= 0; i -= 4) |
*bptr++ = digits[(num>>i) & 0xf]; |
*bptr = '\0'; |
return putstr(buf); |
} |
/** Print number in given base |
* |
* Print significant digits of a number in given |
* base. |
* |
* @param num Number to print. |
* @param base Base to print the number in (should |
* be in range 2 .. 16). |
* |
*/ |
static int print_number(const unsigned long num, const unsigned int base, uint64_t flags) |
{ |
int val = num; |
char d[sizeof(unsigned long)*8+1]; /* this is good enough even for base == 2 */ |
int i = sizeof(unsigned long)*8-1; |
/* FIXME: if signed, print sign */ |
do { |
d[i--] = digits[val % base]; |
} while (val /= base); |
d[sizeof(unsigned long)*8] = 0; |
return putstr(&d[i + 1]); |
} |
/** General formatted text print |
* |
* Print text formatted according the fmt parameter |
* and variant arguments. Each formatting directive |
* begins with \% (percentage) character and one of the |
* following character: |
* |
* \% Prints the percentage character. |
* |
* s The next variant argument is treated as char* |
* and printed as a NULL terminated string. |
* |
* c The next variant argument is treated as a single char. |
* |
* p The next variant argument is treated as a maximum |
* bit-width integer with respect to architecture |
* and printed in full hexadecimal width. |
* |
* P As with 'p', but '0x' is prefixed. |
* |
* q The next variant argument is treated as a 64b integer |
* and printed in full hexadecimal width. |
* |
* Q As with 'q', but '0x' is prefixed. |
* |
* l The next variant argument is treated as a 32b integer |
* and printed in full hexadecimal width. |
* |
* L As with 'l', but '0x' is prefixed. |
* |
* w The next variant argument is treated as a 16b integer |
* and printed in full hexadecimal width. |
* |
* W As with 'w', but '0x' is prefixed. |
* |
* b The next variant argument is treated as a 8b integer |
* and printed in full hexadecimal width. |
* |
* B As with 'b', but '0x' is prefixed. |
* |
* d The next variant argument is treated as integer |
* and printed in standard decimal format (only significant |
* digits). |
* |
* x The next variant argument is treated as integer |
* and printed in standard hexadecimal format (only significant |
* digits). |
* |
* X As with 'x', but '0x' is prefixed. |
* |
* All other characters from fmt except the formatting directives |
* are printed in verbatim. |
* |
* @param fmt Formatting NULL terminated string. |
*/ |
int printf(const char *fmt, ...) |
{ |
int i = 0, j = 0; |
int counter, retval; |
va_list ap; |
char c; |
uint64_t flags; |
counter = 0; |
va_start(ap, fmt); |
while ((c = fmt[i])) { |
/* control character */ |
if (c == '%' ) { |
/* print common characters if any processed */ |
if (i > j) { |
if ((retval = putnchars(&fmt[j], (size_t)(i - j))) == EOF) { /* error */ |
return -counter; |
} |
counter += retval; |
} |
j = ++i; |
/* parse modifiers */ |
flags = 0; |
/*switch (c = fmt[i]) { |
case '-': |
} |
*/ |
switch (c = fmt[i]) { |
/* percentile itself */ |
case '%': |
--j; /* soon will be incremented back */ |
break; |
/* |
* String and character conversions. |
*/ |
case 's': |
if ((retval = putstr(va_arg(ap, char*))) == EOF) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'c': |
c = va_arg(ap, unsigned long); |
if ((retval = putnchars(&c, sizeof(char))) == EOF) { |
return -counter; |
}; |
counter += retval; |
break; |
/* |
* Hexadecimal conversions with fixed width. |
*/ |
case 'P': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'p': |
if ((retval = print_fixed_hex(va_arg(ap, unsigned long), sizeof(unsigned long), flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'Q': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'q': |
if ((retval = print_fixed_hex(va_arg(ap, uint64_t), sizeof(uint64_t), flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'L': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'l': |
if ((retval = print_fixed_hex(va_arg(ap, unsigned long), sizeof(uint32_t), flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'W': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'w': |
if ((retval = print_fixed_hex(va_arg(ap, unsigned long), sizeof(uint16_t), flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'B': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'b': |
if ((retval = print_fixed_hex(va_arg(ap, unsigned long), sizeof(uint8_t), flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
/* |
* Decimal and hexadecimal conversions. |
*/ |
case 'd': |
case 'i': |
flags |= __PRINTF_FLAG_SIGNED; |
if ((retval = print_number(va_arg(ap,unsigned long), 10, flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
case 'X': |
flags |= __PRINTF_FLAG_PREFIX; |
case 'x': |
if ((retval = print_number(va_arg(ap, unsigned long), 16, flags)) == EOF ) { |
return -counter; |
}; |
counter += retval; |
break; |
/* |
* Bad formatting. |
*/ |
default: |
return -counter; |
} |
++j; |
} |
++i; |
} |
if (i > j) { |
if ((retval = putnchars(&fmt[j], (size_t)(i - j))) == EOF) { /* error */ |
return -counter; |
} |
counter += retval; |
} |
va_end(ap); |
return counter; |
} |
/uspace/trunk/libc/generic/string.c |
---|
0,0 → 1,49 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <types.h> |
#include <string.h> |
/* Dummy implementation of mem/ functions */ |
void * memset(void *s, int c, size_t n) |
{ |
char *os = s; |
while (n--) |
*(os++) = c; |
return s; |
} |
void * memcpy(void *dest, void *src, size_t n) |
{ |
char *os = src; |
char *odst = dest; |
while (n--) |
*(odst++) = *(os++); |
return dest; |
} |
/uspace/trunk/libc/generic/libc.c |
---|
0,0 → 1,41 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <libc.h> |
#include <unistd.h> |
void _exit(int status) { |
__SYSCALL0(SYS_CTL); |
} |
void __main(void) { |
} |
void __exit(void) { |
_exit(0); |
} |
/uspace/trunk/libc/Makefile |
---|
0,0 → 1,86 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Common compiler flags |
# |
LIBC_PREFIX = . |
## Setup toolchain |
# |
include $(LIBC_PREFIX)/Makefile.toolchain |
## Sources |
# |
GENERIC_SOURCES = \ |
generic/libc.c \ |
generic/mmap.c \ |
generic/string.c \ |
generic/io/io.c \ |
generic/io/print.c \ |
malloc/malloc.c |
ARCH_SOURCES += \ |
arch/$(ARCH)/src/entry.s |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
ARCH_OBJECTS := $(addsuffix .o,$(basename $(ARCH_SOURCES))) |
.PHONY: all clean depend kerninc |
all: kerninc libc.a arch/$(ARCH)/_link.ld |
kerninc: |
ln -sfn ../../../kernel/generic/include include/kernel |
ln -sfn kernel/arch include/arch |
-include Makefile.depend |
clean: |
-rm -f include/kernel include/arch libc.a arch/$(ARCH)/_link.ld Makefile.depend |
find generic/ arch/$(ARCH)/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(ARCH_SOURCES) $(GENERIC_SOURCES) > Makefile.depend |
libc.a: depend $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
$(AR) rc libc.a $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
arch/$(ARCH)/_link.ld: arch/$(ARCH)/_link.ld.in |
$(CC) $(DEFS) $(CFLAGS) -E -x c $< | grep -v "^\#" > $@ |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/libc/arch/ia64/include/stackarg.h |
---|
0,0 → 1,33 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STACKARG_H__ |
#define __LIBC__STACKARG_H__ |
#endif |
/uspace/trunk/libc/arch/ia64/include/types.h |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__TYPES_H__ |
#define __LIBC__TYPES_H__ |
typedef unsigned long long sysarg_t; |
typedef unsigned long size_t; |
typedef signed long ssize_t; |
typedef char int8_t; |
typedef short int int16_t; |
typedef int int32_t; |
typedef long int int64_t; |
typedef unsigned char uint8_t; |
typedef unsigned short int uint16_t; |
typedef unsigned int uint32_t; |
typedef unsigned long int uint64_t; |
#endif |
/uspace/trunk/libc/arch/ia64/Makefile.inc |
---|
0,0 → 1,38 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Toolchain configuration |
# |
TARGET = ia64-pc-linux-gnu |
TOOLCHAIN_DIR = /usr/local/ia64/bin |
CFLAGS += -fno-unwind-tables |
LFLAGS += -N ../softint/softint.a |
AFLAGS += |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.S |
/uspace/trunk/libc/arch/ia64/_link.ld.in |
---|
0,0 → 1,41 |
STARTUP(../libc/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
text PT_LOAD FLAGS(5); |
data PT_LOAD FLAGS(6); |
} |
SECTIONS { |
. = 0x4000; |
.init ALIGN(0x4000): SUBALIGN(0x4000) { |
*(.init); |
} : text |
.text : { |
*(.text); |
*(.rodata*); |
} :text |
.got ALIGN(0x4000) : SUBALIGN(0x4000) { |
*(.got*); |
} :data |
.data : { |
_gp = .; |
*(.opd); |
*(.data); |
*(.sdata); |
} :data |
.bss : { |
*(.sbss); |
*(.scommon); |
*(COMMON); |
*(.bss); |
_heap = .; |
QUAD(0xdeadbeef); |
} :data |
/DISCARD/ : { |
*(*); |
} |
} |
/uspace/trunk/libc/arch/ia64/src/syscall.S |
---|
0,0 → 1,44 |
# |
# Copyright (C) 2006 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
/** |
* Immediate operand for break instruction. |
* Be carefull about the value as Ski simulator |
* is somewhat sensitive to its value. |
* |
* 0 will be confused with Ski breakpoint. |
* And higher values will be confused with SSC's. |
*/ |
#define SYSCALL_IMM 1 |
.global __syscall |
__syscall: |
alloc r14 = ar.pfs, 5, 0, 0, 0 ;; |
break SYSCALL_IMM |
mov ar.pfs = r14 ;; |
br.ret.sptk.many b0 |
/uspace/trunk/libc/arch/ia64/src/entry.s |
---|
0,0 → 1,43 |
# |
# Copyright (C) 2006 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.section .init, "ax" |
.org 0 |
.globl __entry |
## User-space task entry point |
# |
# |
__entry: |
mov r1 = _gp |
{ br.call.sptk.many b0 = main } |
{ br.call.sptk.many b0 = __exit } |
.end __entry |
/uspace/trunk/libc/arch/amd64/include/stackarg.h |
---|
0,0 → 1,32 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__STACKARG_H__ |
#define __LIBC__STACKARG_H__ |
#endif |
/uspace/trunk/libc/arch/amd64/include/types.h |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__TYPES_H__ |
#define __LIBC__TYPES_H__ |
typedef unsigned long long sysarg_t; |
typedef unsigned long size_t; |
typedef signed long ssize_t; |
typedef char int8_t; |
typedef short int int16_t; |
typedef int int32_t; |
typedef long long int int64_t; |
typedef unsigned char uint8_t; |
typedef unsigned short int uint16_t; |
typedef unsigned int uint32_t; |
typedef unsigned long long int uint64_t; |
#endif |
/uspace/trunk/libc/arch/amd64/_link.ld.in |
---|
0,0 → 1,34 |
STARTUP(../libc/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
text PT_LOAD FLAGS(5); |
data PT_LOAD FLAGS(6); |
} |
SECTIONS { |
. = 0x1000; |
.init ALIGN(0x1000) : SUBALIGN(0x1000) { |
*(.init); |
} :text |
.text : { |
*(.text); |
*(.rodata*); |
} :text |
.data ALIGN(0x1000) : SUBALIGN(0x1000) { |
*(.data); |
} :data |
.bss : { |
*(COMMON); |
*(.bss); |
_heap = .; |
QUAD(0xdeadbeef); |
} :data |
/DISCARD/ : { |
*(*); |
} |
} |
/uspace/trunk/libc/arch/amd64/Makefile.inc |
---|
0,0 → 1,37 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Toolchain configuration |
# |
TARGET = amd64-linux-gnu |
TOOLCHAIN_DIR = /usr/local/amd64/bin |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.S |
LFLAGS += -N |
/uspace/trunk/libc/arch/amd64/src/entry.s |
---|
0,0 → 1,42 |
# |
# Copyright (C) 2006 Ondrej Palkovsky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.section .init, "ax" |
.org 0 |
.globl __entry |
## User-space task entry point |
# |
# |
__entry: |
call main |
call __exit |
.end __entry |
/uspace/trunk/libc/arch/amd64/src/syscall.S |
---|
0,0 → 1,40 |
# |
# Copyright (C) 2006 Ondrej Palkovsky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.text |
.globl __syscall |
__syscall: |
# rcx gets rewritten on syscall |
movq %rcx, %r9 |
syscall |
ret |
.end __syscall |
/uspace/trunk/libc/arch/mips32/include/stackarg.h |
---|
0,0 → 1,57 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC_mips32_STACKARG_H__ |
#define __LIBC_mips32_STACKARG_H__ |
/* dont allow to define it second time in stdarg.h */ |
#define __VARARGS_DEFINED |
#include <types.h> |
typedef struct va_list { |
int pos; |
uint8_t *last; |
} va_list; |
#define va_start(ap, lst) \ |
(ap).pos = sizeof(lst); \ |
(ap).last = (uint8_t *) &(lst) |
/** |
* va_arg macro for MIPS32 - problem is that 64 bit values must be aligned on an 8-byte boundary (32bit values not) |
* To satisfy this, paddings must be sometimes inserted. |
*/ |
#define va_arg(ap, type) \ |
(*((type *)((ap).last + ((ap).pos += sizeof(type) + ((sizeof(type) == 8) && (((ap).pos)&4) ? 4 : 0)) - sizeof(type)))) |
#define va_end(ap) |
#endif |
/uspace/trunk/libc/arch/mips32/include/types.h |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__TYPES_H__ |
#define __LIBC__TYPES_H__ |
typedef unsigned int sysarg_t; |
typedef unsigned int size_t; |
typedef signed int ssize_t; |
typedef char int8_t; |
typedef short int int16_t; |
typedef long int int32_t; |
typedef long long int int64_t; |
typedef unsigned char uint8_t; |
typedef unsigned short int uint16_t; |
typedef unsigned long int uint32_t; |
typedef unsigned long long int uint64_t; |
#endif |
/uspace/trunk/libc/arch/mips32/_link.ld.in |
---|
0,0 → 1,34 |
STARTUP(../libc/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
text PT_LOAD FLAGS(5); |
data PT_LOAD FLAGS(6); |
} |
SECTIONS { |
. = 0x4000; |
.init ALIGN(0x4000) : SUBALIGN(0x4000) { |
*(.init); |
} :text |
.text : { |
*(.text); |
*(.rodata*); |
} :text |
.data ALIGN(0x4000) : SUBALIGN(0x4000) { |
*(.data); |
} :data |
.bss : { |
*(.bss); |
*(.sbss); |
*(COMMON); |
_heap = .; |
LONG(0xdeadbeef); |
} :data |
/DISCARD/ : { |
*(*); |
} |
} |
/uspace/trunk/libc/arch/mips32/src/syscall.c |
---|
0,0 → 1,53 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <libc.h> |
sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, |
const sysarg_t p3, const sysarg_t p4, |
const syscall_t id) |
{ |
register sysarg_t __mips_reg_a0 asm("$4") = p1; |
register sysarg_t __mips_reg_a1 asm("$5") = p2; |
register sysarg_t __mips_reg_a2 asm("$6") = p3; |
register sysarg_t __mips_reg_a3 asm("$7") = p4; |
register sysarg_t __mips_reg_t0 asm("$8") = id; |
register sysarg_t __mips_reg_v0 asm("$2"); |
asm volatile ( |
"syscall\n" |
: "=r" (__mips_reg_v0) |
: "r" (__mips_reg_a0), |
"r" (__mips_reg_a1), |
"r" (__mips_reg_a2), |
"r" (__mips_reg_a3), |
"r" (__mips_reg_t0) |
); |
return __mips_reg_v0; |
} |
/uspace/trunk/libc/arch/mips32/src/entry.s |
---|
0,0 → 1,47 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.text |
.org 0 |
.section .init, "ax" |
.globl __entry |
## User-space task entry point |
# |
# |
__entry: |
jal main |
nop |
jal __exit |
nop |
.end __entry |
/uspace/trunk/libc/arch/mips32/Makefile.inc |
---|
0,0 → 1,39 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Toolchain configuration |
# |
TARGET = mipsel-linux-gnu |
TOOLCHAIN_DIR = /usr/local/mipsel/bin |
CFLAGS += -mno-abicalls -mips3 |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.c |
LFLAGS += -N |
/uspace/trunk/libc/arch/ia32/include/stackarg.h |
---|
0,0 → 1,58 |
/* |
* Copyright (C) 2005 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/* |
* Variable argument list manipulation macros |
* for architectures using stack to pass arguments. |
*/ |
#ifndef __LIBC_STACKARG_H__ |
#define __LIBC_STACKARG_H__ |
#include <types.h> |
/* dont allow to define it second time in stdarg.h */ |
#define __VARARGS_DEFINED |
typedef struct va_list { |
int pos; |
uint8_t *last; |
} va_list; |
#define va_start(ap, lst) \ |
(ap).pos = sizeof(lst); \ |
(ap).last = (uint8_t *) &(lst) |
#define va_arg(ap, type) \ |
(*((type *)((ap).last + ((ap).pos += sizeof(type) ) - sizeof(type)))) |
#define va_end(ap) |
#endif |
/uspace/trunk/libc/arch/ia32/include/types.h |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBC__TYPES_H__ |
#define __LIBC__TYPES_H__ |
typedef unsigned int sysarg_t; |
typedef unsigned int size_t; |
typedef signed int ssize_t; |
typedef char int8_t; |
typedef short int int16_t; |
typedef int int32_t; |
typedef long long int int64_t; |
typedef unsigned char uint8_t; |
typedef unsigned short int uint16_t; |
typedef unsigned int uint32_t; |
typedef unsigned long long int uint64_t; |
#endif |
/uspace/trunk/libc/arch/ia32/_link.ld.in |
---|
0,0 → 1,34 |
STARTUP(../libc/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
text PT_LOAD FLAGS(5); |
data PT_LOAD FLAGS(6); |
} |
SECTIONS { |
. = 0x1000; |
.init ALIGN(0x1000) : SUBALIGN(0x1000) { |
*(.init); |
} :text |
.text : { |
*(.text); |
*(.rodata*); |
} :text |
.data ALIGN(0x1000) : SUBALIGN(0x1000) { |
*(.data); |
} :data |
.bss : { |
*(COMMON); |
*(.bss); |
_heap = .; |
LONG(0xdeadbeef); |
} :data |
/DISCARD/ : { |
*(*); |
} |
} |
/uspace/trunk/libc/arch/ia32/src/syscall.c |
---|
0,0 → 1,47 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <libc.h> |
sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, const sysarg_t p3, |
const sysarg_t p4, const syscall_t id) |
{ |
sysarg_t ret; |
asm volatile ( |
"int $0x30\n" |
: "=a" (ret) |
: "a" (p1), |
"b" (p2), |
"c" (p3), |
"d" (p4), |
"S" (id) |
); |
return ret; |
} |
/uspace/trunk/libc/arch/ia32/src/entry.s |
---|
0,0 → 1,48 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.section .init, "ax" |
.org 0 |
.globl __entry |
## User-space task entry point |
# |
# |
__entry: |
mov %ss, %ax |
mov %ax, %ds |
mov %ax, %es |
mov %ax, %fs |
mov %ax, %gs |
call main |
call __exit |
.end __entry |
/uspace/trunk/libc/arch/ia32/Makefile.inc |
---|
0,0 → 1,37 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Toolchain configuration |
# |
TARGET = i686-pc-linux-gnu |
TOOLCHAIN_DIR = /usr/local/i686/bin |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.c |
LFLAGS += -N |
/uspace/trunk/libc/arch/mips32eb/Makefile.inc |
---|
0,0 → 1,39 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Toolchain configuration |
# |
TARGET = mips-sgi-irix5 |
TOOLCHAIN_DIR = /usr/local/mips/bin |
CFLAGS += -mno-abicalls -mips3 |
ARCH_SOURCES += arch/$(ARCH)/src/syscall.c |
LFLAGS += -N |
/uspace/trunk/libc/arch/mips32eb/_link.ld.in |
---|
0,0 → 1,0 |
link ../mips32/_link.ld.in |
Property changes: |
Added: svn:special |
+* |
\ No newline at end of property |
/uspace/trunk/libc/arch/mips32eb/include |
---|
0,0 → 1,0 |
link ../mips32/include |
Property changes: |
Added: svn:special |
+* |
\ No newline at end of property |
/uspace/trunk/libc/arch/mips32eb/src |
---|
0,0 → 1,0 |
link ../mips32/src |
Property changes: |
Added: svn:special |
+* |
\ No newline at end of property |
/uspace/trunk/libc/malloc/malloc.c |
---|
0,0 → 1,4437 |
/* |
This is a version (aka dlmalloc) of malloc/free/realloc written by |
Doug Lea and released to the public domain, as explained at |
http://creativecommons.org/licenses/publicdomain. Send questions, |
comments, complaints, performance data, etc to dl@cs.oswego.edu |
* Version 2.8.3 Thu Sep 22 11:16:15 2005 Doug Lea (dl at gee) |
Note: There may be an updated version of this malloc obtainable at |
ftp://gee.cs.oswego.edu/pub/misc/malloc.c |
Check before installing! |
* Quickstart |
This library is all in one file to simplify the most common usage: |
ftp it, compile it (-O3), and link it into another program. All of |
the compile-time options default to reasonable values for use on |
most platforms. You might later want to step through various |
compile-time and dynamic tuning options. |
For convenience, an include file for code using this malloc is at: |
ftp://gee.cs.oswego.edu/pub/misc/malloc-2.8.3.h |
You don't really need this .h file unless you call functions not |
defined in your system include files. The .h file contains only the |
excerpts from this file needed for using this malloc on ANSI C/C++ |
systems, so long as you haven't changed compile-time options about |
naming and tuning parameters. If you do, then you can create your |
own malloc.h that does include all settings by cutting at the point |
indicated below. Note that you may already by default be using a C |
library containing a malloc that is based on some version of this |
malloc (for example in linux). You might still want to use the one |
in this file to customize settings or to avoid overheads associated |
with library versions. |
* Vital statistics: |
Supported pointer/size_t representation: 4 or 8 bytes |
size_t MUST be an unsigned type of the same width as |
pointers. (If you are using an ancient system that declares |
size_t as a signed type, or need it to be a different width |
than pointers, you can use a previous release of this malloc |
(e.g. 2.7.2) supporting these.) |
Alignment: 8 bytes (default) |
This suffices for nearly all current machines and C compilers. |
However, you can define MALLOC_ALIGNMENT to be wider than this |
if necessary (up to 128bytes), at the expense of using more space. |
Minimum overhead per allocated chunk: 4 or 8 bytes (if 4byte sizes) |
8 or 16 bytes (if 8byte sizes) |
Each malloced chunk has a hidden word of overhead holding size |
and status information, and additional cross-check word |
if FOOTERS is defined. |
Minimum allocated size: 4-byte ptrs: 16 bytes (including overhead) |
8-byte ptrs: 32 bytes (including overhead) |
Even a request for zero bytes (i.e., malloc(0)) returns a |
pointer to something of the minimum allocatable size. |
The maximum overhead wastage (i.e., number of extra bytes |
allocated than were requested in malloc) is less than or equal |
to the minimum size, except for requests >= mmap_threshold that |
are serviced via mmap(), where the worst case wastage is about |
32 bytes plus the remainder from a system page (the minimal |
mmap unit); typically 4096 or 8192 bytes. |
Security: static-safe; optionally more or less |
The "security" of malloc refers to the ability of malicious |
code to accentuate the effects of errors (for example, freeing |
space that is not currently malloc'ed or overwriting past the |
ends of chunks) in code that calls malloc. This malloc |
guarantees not to modify any memory locations below the base of |
heap, i.e., static variables, even in the presence of usage |
errors. The routines additionally detect most improper frees |
and reallocs. All this holds as long as the static bookkeeping |
for malloc itself is not corrupted by some other means. This |
is only one aspect of security -- these checks do not, and |
cannot, detect all possible programming errors. |
If FOOTERS is defined nonzero, then each allocated chunk |
carries an additional check word to verify that it was malloced |
from its space. These check words are the same within each |
execution of a program using malloc, but differ across |
executions, so externally crafted fake chunks cannot be |
freed. This improves security by rejecting frees/reallocs that |
could corrupt heap memory, in addition to the checks preventing |
writes to statics that are always on. This may further improve |
security at the expense of time and space overhead. (Note that |
FOOTERS may also be worth using with MSPACES.) |
By default detected errors cause the program to abort (calling |
"abort()"). You can override this to instead proceed past |
errors by defining PROCEED_ON_ERROR. In this case, a bad free |
has no effect, and a malloc that encounters a bad address |
caused by user overwrites will ignore the bad address by |
dropping pointers and indices to all known memory. This may |
be appropriate for programs that should continue if at all |
possible in the face of programming errors, although they may |
run out of memory because dropped memory is never reclaimed. |
If you don't like either of these options, you can define |
CORRUPTION_ERROR_ACTION and USAGE_ERROR_ACTION to do anything |
else. And if if you are sure that your program using malloc has |
no errors or vulnerabilities, you can define INSECURE to 1, |
which might (or might not) provide a small performance improvement. |
Thread-safety: NOT thread-safe unless USE_LOCKS defined |
When USE_LOCKS is defined, each public call to malloc, free, |
etc is surrounded with either a pthread mutex or a win32 |
spinlock (depending on WIN32). This is not especially fast, and |
can be a major bottleneck. It is designed only to provide |
minimal protection in concurrent environments, and to provide a |
basis for extensions. If you are using malloc in a concurrent |
program, consider instead using ptmalloc, which is derived from |
a version of this malloc. (See http://www.malloc.de). |
System requirements: Any combination of MORECORE and/or MMAP/MUNMAP |
This malloc can use unix sbrk or any emulation (invoked using |
the CALL_MORECORE macro) and/or mmap/munmap or any emulation |
(invoked using CALL_MMAP/CALL_MUNMAP) to get and release system |
memory. On most unix systems, it tends to work best if both |
MORECORE and MMAP are enabled. On Win32, it uses emulations |
based on VirtualAlloc. It also uses common C library functions |
like memset. |
Compliance: I believe it is compliant with the Single Unix Specification |
(See http://www.unix.org). Also SVID/XPG, ANSI C, and probably |
others as well. |
* Overview of algorithms |
This is not the fastest, most space-conserving, most portable, or |
most tunable malloc ever written. However it is among the fastest |
while also being among the most space-conserving, portable and |
tunable. Consistent balance across these factors results in a good |
general-purpose allocator for malloc-intensive programs. |
In most ways, this malloc is a best-fit allocator. Generally, it |
chooses the best-fitting existing chunk for a request, with ties |
broken in approximately least-recently-used order. (This strategy |
normally maintains low fragmentation.) However, for requests less |
than 256bytes, it deviates from best-fit when there is not an |
exactly fitting available chunk by preferring to use space adjacent |
to that used for the previous small request, as well as by breaking |
ties in approximately most-recently-used order. (These enhance |
locality of series of small allocations.) And for very large requests |
(>= 256Kb by default), it relies on system memory mapping |
facilities, if supported. (This helps avoid carrying around and |
possibly fragmenting memory used only for large chunks.) |
All operations (except malloc_stats and mallinfo) have execution |
times that are bounded by a constant factor of the number of bits in |
a size_t, not counting any clearing in calloc or copying in realloc, |
or actions surrounding MORECORE and MMAP that have times |
proportional to the number of non-contiguous regions returned by |
system allocation routines, which is often just 1. |
The implementation is not very modular and seriously overuses |
macros. Perhaps someday all C compilers will do as good a job |
inlining modular code as can now be done by brute-force expansion, |
but now, enough of them seem not to. |
Some compilers issue a lot of warnings about code that is |
dead/unreachable only on some platforms, and also about intentional |
uses of negation on unsigned types. All known cases of each can be |
ignored. |
For a longer but out of date high-level description, see |
http://gee.cs.oswego.edu/dl/html/malloc.html |
* MSPACES |
If MSPACES is defined, then in addition to malloc, free, etc., |
this file also defines mspace_malloc, mspace_free, etc. These |
are versions of malloc routines that take an "mspace" argument |
obtained using create_mspace, to control all internal bookkeeping. |
If ONLY_MSPACES is defined, only these versions are compiled. |
So if you would like to use this allocator for only some allocations, |
and your system malloc for others, you can compile with |
ONLY_MSPACES and then do something like... |
static mspace mymspace = create_mspace(0,0); // for example |
#define mymalloc(bytes) mspace_malloc(mymspace, bytes) |
(Note: If you only need one instance of an mspace, you can instead |
use "USE_DL_PREFIX" to relabel the global malloc.) |
You can similarly create thread-local allocators by storing |
mspaces as thread-locals. For example: |
static __thread mspace tlms = 0; |
void* tlmalloc(size_t bytes) { |
if (tlms == 0) tlms = create_mspace(0, 0); |
return mspace_malloc(tlms, bytes); |
} |
void tlfree(void* mem) { mspace_free(tlms, mem); } |
Unless FOOTERS is defined, each mspace is completely independent. |
You cannot allocate from one and free to another (although |
conformance is only weakly checked, so usage errors are not always |
caught). If FOOTERS is defined, then each chunk carries around a tag |
indicating its originating mspace, and frees are directed to their |
originating spaces. |
------------------------- Compile-time options --------------------------- |
Be careful in setting #define values for numerical constants of type |
size_t. On some systems, literal values are not automatically extended |
to size_t precision unless they are explicitly casted. |
WIN32 default: defined if _WIN32 defined |
Defining WIN32 sets up defaults for MS environment and compilers. |
Otherwise defaults are for unix. |
MALLOC_ALIGNMENT default: (size_t)8 |
Controls the minimum alignment for malloc'ed chunks. It must be a |
power of two and at least 8, even on machines for which smaller |
alignments would suffice. It may be defined as larger than this |
though. Note however that code and data structures are optimized for |
the case of 8-byte alignment. |
MSPACES default: 0 (false) |
If true, compile in support for independent allocation spaces. |
This is only supported if HAVE_MMAP is true. |
ONLY_MSPACES default: 0 (false) |
If true, only compile in mspace versions, not regular versions. |
USE_LOCKS default: 0 (false) |
Causes each call to each public routine to be surrounded with |
pthread or WIN32 mutex lock/unlock. (If set true, this can be |
overridden on a per-mspace basis for mspace versions.) |
FOOTERS default: 0 |
If true, provide extra checking and dispatching by placing |
information in the footers of allocated chunks. This adds |
space and time overhead. |
INSECURE default: 0 |
If true, omit checks for usage errors and heap space overwrites. |
USE_DL_PREFIX default: NOT defined |
Causes compiler to prefix all public routines with the string 'dl'. |
This can be useful when you only want to use this malloc in one part |
of a program, using your regular system malloc elsewhere. |
ABORT default: defined as abort() |
Defines how to abort on failed checks. On most systems, a failed |
check cannot die with an "assert" or even print an informative |
message, because the underlying print routines in turn call malloc, |
which will fail again. Generally, the best policy is to simply call |
abort(). It's not very useful to do more than this because many |
errors due to overwriting will show up as address faults (null, odd |
addresses etc) rather than malloc-triggered checks, so will also |
abort. Also, most compilers know that abort() does not return, so |
can better optimize code conditionally calling it. |
PROCEED_ON_ERROR default: defined as 0 (false) |
Controls whether detected bad addresses cause them to bypassed |
rather than aborting. If set, detected bad arguments to free and |
realloc are ignored. And all bookkeeping information is zeroed out |
upon a detected overwrite of freed heap space, thus losing the |
ability to ever return it from malloc again, but enabling the |
application to proceed. If PROCEED_ON_ERROR is defined, the |
static variable malloc_corruption_error_count is compiled in |
and can be examined to see if errors have occurred. This option |
generates slower code than the default abort policy. |
DEBUG default: NOT defined |
The DEBUG setting is mainly intended for people trying to modify |
this code or diagnose problems when porting to new platforms. |
However, it may also be able to better isolate user errors than just |
using runtime checks. The assertions in the check routines spell |
out in more detail the assumptions and invariants underlying the |
algorithms. The checking is fairly extensive, and will slow down |
execution noticeably. Calling malloc_stats or mallinfo with DEBUG |
set will attempt to check every non-mmapped allocated and free chunk |
in the course of computing the summaries. |
ABORT_ON_ASSERT_FAILURE default: defined as 1 (true) |
Debugging assertion failures can be nearly impossible if your |
version of the assert macro causes malloc to be called, which will |
lead to a cascade of further failures, blowing the runtime stack. |
ABORT_ON_ASSERT_FAILURE cause assertions failures to call abort(), |
which will usually make debugging easier. |
MALLOC_FAILURE_ACTION default: sets errno to ENOMEM, or no-op on win32 |
The action to take before "return 0" when malloc fails to be able to |
return memory because there is none available. |
HAVE_MORECORE default: 1 (true) unless win32 or ONLY_MSPACES |
True if this system supports sbrk or an emulation of it. |
MORECORE default: sbrk |
The name of the sbrk-style system routine to call to obtain more |
memory. See below for guidance on writing custom MORECORE |
functions. The type of the argument to sbrk/MORECORE varies across |
systems. It cannot be size_t, because it supports negative |
arguments, so it is normally the signed type of the same width as |
size_t (sometimes declared as "intptr_t"). It doesn't much matter |
though. Internally, we only call it with arguments less than half |
the max value of a size_t, which should work across all reasonable |
possibilities, although sometimes generating compiler warnings. See |
near the end of this file for guidelines for creating a custom |
version of MORECORE. |
MORECORE_CONTIGUOUS default: 1 (true) |
If true, take advantage of fact that consecutive calls to MORECORE |
with positive arguments always return contiguous increasing |
addresses. This is true of unix sbrk. It does not hurt too much to |
set it true anyway, since malloc copes with non-contiguities. |
Setting it false when definitely non-contiguous saves time |
and possibly wasted space it would take to discover this though. |
MORECORE_CANNOT_TRIM default: NOT defined |
True if MORECORE cannot release space back to the system when given |
negative arguments. This is generally necessary only if you are |
using a hand-crafted MORECORE function that cannot handle negative |
arguments. |
HAVE_MMAP default: 1 (true) |
True if this system supports mmap or an emulation of it. If so, and |
HAVE_MORECORE is not true, MMAP is used for all system |
allocation. If set and HAVE_MORECORE is true as well, MMAP is |
primarily used to directly allocate very large blocks. It is also |
used as a backup strategy in cases where MORECORE fails to provide |
space from system. Note: A single call to MUNMAP is assumed to be |
able to unmap memory that may have be allocated using multiple calls |
to MMAP, so long as they are adjacent. |
HAVE_MREMAP default: 1 on linux, else 0 |
If true realloc() uses mremap() to re-allocate large blocks and |
extend or shrink allocation spaces. |
MMAP_CLEARS default: 1 on unix |
True if mmap clears memory so calloc doesn't need to. This is true |
for standard unix mmap using /dev/zero. |
USE_BUILTIN_FFS default: 0 (i.e., not used) |
Causes malloc to use the builtin ffs() function to compute indices. |
Some compilers may recognize and intrinsify ffs to be faster than the |
supplied C version. Also, the case of x86 using gcc is special-cased |
to an asm instruction, so is already as fast as it can be, and so |
this setting has no effect. (On most x86s, the asm version is only |
slightly faster than the C version.) |
malloc_getpagesize default: derive from system includes, or 4096. |
The system page size. To the extent possible, this malloc manages |
memory from the system in page-size units. This may be (and |
usually is) a function rather than a constant. This is ignored |
if WIN32, where page size is determined using getSystemInfo during |
initialization. |
USE_DEV_RANDOM default: 0 (i.e., not used) |
Causes malloc to use /dev/random to initialize secure magic seed for |
stamping footers. Otherwise, the current time is used. |
NO_MALLINFO default: 0 |
If defined, don't compile "mallinfo". This can be a simple way |
of dealing with mismatches between system declarations and |
those in this file. |
MALLINFO_FIELD_TYPE default: size_t |
The type of the fields in the mallinfo struct. This was originally |
defined as "int" in SVID etc, but is more usefully defined as |
size_t. The value is used only if HAVE_USR_INCLUDE_MALLOC_H is not set |
REALLOC_ZERO_BYTES_FREES default: not defined |
This should be set if a call to realloc with zero bytes should |
be the same as a call to free. Some people think it should. Otherwise, |
since this malloc returns a unique pointer for malloc(0), so does |
realloc(p, 0). |
LACKS_UNISTD_H, LACKS_FCNTL_H, LACKS_SYS_PARAM_H, LACKS_SYS_MMAN_H |
LACKS_STRINGS_H, LACKS_STRING_H, LACKS_SYS_TYPES_H, LACKS_ERRNO_H |
LACKS_STDLIB_H default: NOT defined unless on WIN32 |
Define these if your system does not have these header files. |
You might need to manually insert some of the declarations they provide. |
DEFAULT_GRANULARITY default: page size if MORECORE_CONTIGUOUS, |
system_info.dwAllocationGranularity in WIN32, |
otherwise 64K. |
Also settable using mallopt(M_GRANULARITY, x) |
The unit for allocating and deallocating memory from the system. On |
most systems with contiguous MORECORE, there is no reason to |
make this more than a page. However, systems with MMAP tend to |
either require or encourage larger granularities. You can increase |
this value to prevent system allocation functions to be called so |
often, especially if they are slow. The value must be at least one |
page and must be a power of two. Setting to 0 causes initialization |
to either page size or win32 region size. (Note: In previous |
versions of malloc, the equivalent of this option was called |
"TOP_PAD") |
DEFAULT_TRIM_THRESHOLD default: 2MB |
Also settable using mallopt(M_TRIM_THRESHOLD, x) |
The maximum amount of unused top-most memory to keep before |
releasing via malloc_trim in free(). Automatic trimming is mainly |
useful in long-lived programs using contiguous MORECORE. Because |
trimming via sbrk can be slow on some systems, and can sometimes be |
wasteful (in cases where programs immediately afterward allocate |
more large chunks) the value should be high enough so that your |
overall system performance would improve by releasing this much |
memory. As a rough guide, you might set to a value close to the |
average size of a process (program) running on your system. |
Releasing this much memory would allow such a process to run in |
memory. Generally, it is worth tuning trim thresholds when a |
program undergoes phases where several large chunks are allocated |
and released in ways that can reuse each other's storage, perhaps |
mixed with phases where there are no such chunks at all. The trim |
value must be greater than page size to have any useful effect. To |
disable trimming completely, you can set to MAX_SIZE_T. Note that the trick |
some people use of mallocing a huge space and then freeing it at |
program startup, in an attempt to reserve system memory, doesn't |
have the intended effect under automatic trimming, since that memory |
will immediately be returned to the system. |
DEFAULT_MMAP_THRESHOLD default: 256K |
Also settable using mallopt(M_MMAP_THRESHOLD, x) |
The request size threshold for using MMAP to directly service a |
request. Requests of at least this size that cannot be allocated |
using already-existing space will be serviced via mmap. (If enough |
normal freed space already exists it is used instead.) Using mmap |
segregates relatively large chunks of memory so that they can be |
individually obtained and released from the host system. A request |
serviced through mmap is never reused by any other request (at least |
not directly; the system may just so happen to remap successive |
requests to the same locations). Segregating space in this way has |
the benefits that: Mmapped space can always be individually released |
back to the system, which helps keep the system level memory demands |
of a long-lived program low. Also, mapped memory doesn't become |
`locked' between other chunks, as can happen with normally allocated |
chunks, which means that even trimming via malloc_trim would not |
release them. However, it has the disadvantage that the space |
cannot be reclaimed, consolidated, and then used to service later |
requests, as happens with normal chunks. The advantages of mmap |
nearly always outweigh disadvantages for "large" chunks, but the |
value of "large" may vary across systems. The default is an |
empirically derived value that works well in most systems. You can |
disable mmap by setting to MAX_SIZE_T. |
*/ |
#include <sys/types.h> /* For size_t */ |
/** Non-default helenos customizations */ |
#define LACKS_FCNTL_H |
#define LACKS_SYS_MMAN_H |
#define LACKS_SYS_PARAM_H |
#undef HAVE_MMAP |
#define HAVE_MMAP 0 |
#define LACKS_ERRNO_H |
/* Set errno? */ |
#undef MALLOC_FAILURE_ACTION |
#define MALLOC_FAILURE_ACTION |
/* The maximum possible size_t value has all bits set */ |
#define MAX_SIZE_T (~(size_t)0) |
#define ONLY_MSPACES 0 |
#define MSPACES 0 |
#define MALLOC_ALIGNMENT ((size_t)8U) |
#define FOOTERS 0 |
#define ABORT abort() |
#define ABORT_ON_ASSERT_FAILURE 1 |
#define PROCEED_ON_ERROR 0 |
#define USE_LOCKS 0 |
#define INSECURE 0 |
#define HAVE_MMAP 0 |
#define MMAP_CLEARS 1 |
#define HAVE_MORECORE 1 |
#define MORECORE_CONTIGUOUS 1 |
#define MORECORE sbrk |
#define DEFAULT_GRANULARITY (0) /* 0 means to compute in init_mparams */ |
#ifndef DEFAULT_TRIM_THRESHOLD |
#ifndef MORECORE_CANNOT_TRIM |
#define DEFAULT_TRIM_THRESHOLD ((size_t)2U * (size_t)1024U * (size_t)1024U) |
#else /* MORECORE_CANNOT_TRIM */ |
#define DEFAULT_TRIM_THRESHOLD MAX_SIZE_T |
#endif /* MORECORE_CANNOT_TRIM */ |
#endif /* DEFAULT_TRIM_THRESHOLD */ |
#ifndef DEFAULT_MMAP_THRESHOLD |
#if HAVE_MMAP |
#define DEFAULT_MMAP_THRESHOLD ((size_t)256U * (size_t)1024U) |
#else /* HAVE_MMAP */ |
#define DEFAULT_MMAP_THRESHOLD MAX_SIZE_T |
#endif /* HAVE_MMAP */ |
#endif /* DEFAULT_MMAP_THRESHOLD */ |
#ifndef USE_BUILTIN_FFS |
#define USE_BUILTIN_FFS 0 |
#endif /* USE_BUILTIN_FFS */ |
#ifndef USE_DEV_RANDOM |
#define USE_DEV_RANDOM 0 |
#endif /* USE_DEV_RANDOM */ |
#ifndef NO_MALLINFO |
#define NO_MALLINFO 0 |
#endif /* NO_MALLINFO */ |
#ifndef MALLINFO_FIELD_TYPE |
#define MALLINFO_FIELD_TYPE size_t |
#endif /* MALLINFO_FIELD_TYPE */ |
/* |
mallopt tuning options. SVID/XPG defines four standard parameter |
numbers for mallopt, normally defined in malloc.h. None of these |
are used in this malloc, so setting them has no effect. But this |
malloc does support the following options. |
*/ |
#define M_TRIM_THRESHOLD (-1) |
#define M_GRANULARITY (-2) |
#define M_MMAP_THRESHOLD (-3) |
/* |
======================================================================== |
To make a fully customizable malloc.h header file, cut everything |
above this line, put into file malloc.h, edit to suit, and #include it |
on the next line, as well as in programs that use this malloc. |
======================================================================== |
*/ |
#include "malloc.h" |
/*------------------------------ internal #includes ---------------------- */ |
#include <stdio.h> /* for printing in malloc_stats */ |
#include <string.h> |
#ifndef LACKS_ERRNO_H |
#include <errno.h> /* for MALLOC_FAILURE_ACTION */ |
#endif /* LACKS_ERRNO_H */ |
#if FOOTERS |
#include <time.h> /* for magic initialization */ |
#endif /* FOOTERS */ |
#ifndef LACKS_STDLIB_H |
#include <stdlib.h> /* for abort() */ |
#endif /* LACKS_STDLIB_H */ |
#ifdef DEBUG |
#if ABORT_ON_ASSERT_FAILURE |
#define assert(x) if(!(x)) ABORT |
#else /* ABORT_ON_ASSERT_FAILURE */ |
#include <assert.h> |
#endif /* ABORT_ON_ASSERT_FAILURE */ |
#else /* DEBUG */ |
#define assert(x) |
#endif /* DEBUG */ |
#if USE_BUILTIN_FFS |
#ifndef LACKS_STRINGS_H |
#include <strings.h> /* for ffs */ |
#endif /* LACKS_STRINGS_H */ |
#endif /* USE_BUILTIN_FFS */ |
#if HAVE_MMAP |
#ifndef LACKS_SYS_MMAN_H |
#include <sys/mman.h> /* for mmap */ |
#endif /* LACKS_SYS_MMAN_H */ |
#ifndef LACKS_FCNTL_H |
#include <fcntl.h> |
#endif /* LACKS_FCNTL_H */ |
#endif /* HAVE_MMAP */ |
#if HAVE_MORECORE |
#ifndef LACKS_UNISTD_H |
#include <unistd.h> /* for sbrk */ |
#else /* LACKS_UNISTD_H */ |
#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) |
extern void* sbrk(ptrdiff_t); |
#endif /* FreeBSD etc */ |
#endif /* LACKS_UNISTD_H */ |
#endif /* HAVE_MMAP */ |
#ifndef WIN32 |
#ifndef malloc_getpagesize |
# ifdef _SC_PAGESIZE /* some SVR4 systems omit an underscore */ |
# ifndef _SC_PAGE_SIZE |
# define _SC_PAGE_SIZE _SC_PAGESIZE |
# endif |
# endif |
# ifdef _SC_PAGE_SIZE |
# define malloc_getpagesize sysconf(_SC_PAGE_SIZE) |
# else |
# if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE) |
extern size_t getpagesize(); |
# define malloc_getpagesize getpagesize() |
# else |
# ifdef WIN32 /* use supplied emulation of getpagesize */ |
# define malloc_getpagesize getpagesize() |
# else |
# ifndef LACKS_SYS_PARAM_H |
# include <sys/param.h> |
# endif |
# ifdef EXEC_PAGESIZE |
# define malloc_getpagesize EXEC_PAGESIZE |
# else |
# ifdef NBPG |
# ifndef CLSIZE |
# define malloc_getpagesize NBPG |
# else |
# define malloc_getpagesize (NBPG * CLSIZE) |
# endif |
# else |
# ifdef NBPC |
# define malloc_getpagesize NBPC |
# else |
# ifdef PAGESIZE |
# define malloc_getpagesize PAGESIZE |
# else /* just guess */ |
# define malloc_getpagesize ((size_t)4096U) |
# endif |
# endif |
# endif |
# endif |
# endif |
# endif |
# endif |
#endif |
#endif |
/* ------------------- size_t and alignment properties -------------------- */ |
/* The byte and bit size of a size_t */ |
#define SIZE_T_SIZE (sizeof(size_t)) |
#define SIZE_T_BITSIZE (sizeof(size_t) << 3) |
/* Some constants coerced to size_t */ |
/* Annoying but necessary to avoid errors on some plaftorms */ |
#define SIZE_T_ZERO ((size_t)0) |
#define SIZE_T_ONE ((size_t)1) |
#define SIZE_T_TWO ((size_t)2) |
#define TWO_SIZE_T_SIZES (SIZE_T_SIZE<<1) |
#define FOUR_SIZE_T_SIZES (SIZE_T_SIZE<<2) |
#define SIX_SIZE_T_SIZES (FOUR_SIZE_T_SIZES+TWO_SIZE_T_SIZES) |
#define HALF_MAX_SIZE_T (MAX_SIZE_T / 2U) |
/* The bit mask value corresponding to MALLOC_ALIGNMENT */ |
#define CHUNK_ALIGN_MASK (MALLOC_ALIGNMENT - SIZE_T_ONE) |
/* True if address a has acceptable alignment */ |
#define is_aligned(A) (((size_t)((A)) & (CHUNK_ALIGN_MASK)) == 0) |
/* the number of bytes to offset an address to align it */ |
#define align_offset(A)\ |
((((size_t)(A) & CHUNK_ALIGN_MASK) == 0)? 0 :\ |
((MALLOC_ALIGNMENT - ((size_t)(A) & CHUNK_ALIGN_MASK)) & CHUNK_ALIGN_MASK)) |
/* -------------------------- MMAP preliminaries ------------------------- */ |
/* |
If HAVE_MORECORE or HAVE_MMAP are false, we just define calls and |
checks to fail so compiler optimizer can delete code rather than |
using so many "#if"s. |
*/ |
/* MORECORE and MMAP must return MFAIL on failure */ |
#define MFAIL ((void*)(MAX_SIZE_T)) |
#define CMFAIL ((char*)(MFAIL)) /* defined for convenience */ |
#if !HAVE_MMAP |
#define IS_MMAPPED_BIT (SIZE_T_ZERO) |
#define USE_MMAP_BIT (SIZE_T_ZERO) |
#define CALL_MMAP(s) MFAIL |
#define CALL_MUNMAP(a, s) (-1) |
#define DIRECT_MMAP(s) MFAIL |
#else /* HAVE_MMAP */ |
#define IS_MMAPPED_BIT (SIZE_T_ONE) |
#define USE_MMAP_BIT (SIZE_T_ONE) |
#ifndef WIN32 |
#define CALL_MUNMAP(a, s) munmap((a), (s)) |
#define MMAP_PROT (PROT_READ|PROT_WRITE) |
#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) |
#define MAP_ANONYMOUS MAP_ANON |
#endif /* MAP_ANON */ |
#ifdef MAP_ANONYMOUS |
#define MMAP_FLAGS (MAP_PRIVATE|MAP_ANONYMOUS) |
#define CALL_MMAP(s) mmap(0, (s), MMAP_PROT, MMAP_FLAGS, -1, 0) |
#else /* MAP_ANONYMOUS */ |
/* |
Nearly all versions of mmap support MAP_ANONYMOUS, so the following |
is unlikely to be needed, but is supplied just in case. |
*/ |
#define MMAP_FLAGS (MAP_PRIVATE) |
static int dev_zero_fd = -1; /* Cached file descriptor for /dev/zero. */ |
#define CALL_MMAP(s) ((dev_zero_fd < 0) ? \ |
(dev_zero_fd = open("/dev/zero", O_RDWR), \ |
mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) : \ |
mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) |
#endif /* MAP_ANONYMOUS */ |
#define DIRECT_MMAP(s) CALL_MMAP(s) |
#else /* WIN32 */ |
/* Win32 MMAP via VirtualAlloc */ |
static void* win32mmap(size_t size) { |
void* ptr = VirtualAlloc(0, size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE); |
return (ptr != 0)? ptr: MFAIL; |
} |
/* For direct MMAP, use MEM_TOP_DOWN to minimize interference */ |
static void* win32direct_mmap(size_t size) { |
void* ptr = VirtualAlloc(0, size, MEM_RESERVE|MEM_COMMIT|MEM_TOP_DOWN, |
PAGE_READWRITE); |
return (ptr != 0)? ptr: MFAIL; |
} |
/* This function supports releasing coalesed segments */ |
static int win32munmap(void* ptr, size_t size) { |
MEMORY_BASIC_INFORMATION minfo; |
char* cptr = ptr; |
while (size) { |
if (VirtualQuery(cptr, &minfo, sizeof(minfo)) == 0) |
return -1; |
if (minfo.BaseAddress != cptr || minfo.AllocationBase != cptr || |
minfo.State != MEM_COMMIT || minfo.RegionSize > size) |
return -1; |
if (VirtualFree(cptr, 0, MEM_RELEASE) == 0) |
return -1; |
cptr += minfo.RegionSize; |
size -= minfo.RegionSize; |
} |
return 0; |
} |
#define CALL_MMAP(s) win32mmap(s) |
#define CALL_MUNMAP(a, s) win32munmap((a), (s)) |
#define DIRECT_MMAP(s) win32direct_mmap(s) |
#endif /* WIN32 */ |
#endif /* HAVE_MMAP */ |
#if HAVE_MMAP && HAVE_MREMAP |
#define CALL_MREMAP(addr, osz, nsz, mv) mremap((addr), (osz), (nsz), (mv)) |
#else /* HAVE_MMAP && HAVE_MREMAP */ |
#define CALL_MREMAP(addr, osz, nsz, mv) MFAIL |
#endif /* HAVE_MMAP && HAVE_MREMAP */ |
#if HAVE_MORECORE |
#define CALL_MORECORE(S) MORECORE(S) |
#else /* HAVE_MORECORE */ |
#define CALL_MORECORE(S) MFAIL |
#endif /* HAVE_MORECORE */ |
/* mstate bit set if continguous morecore disabled or failed */ |
#define USE_NONCONTIGUOUS_BIT (4U) |
/* segment bit set in create_mspace_with_base */ |
#define EXTERN_BIT (8U) |
/* --------------------------- Lock preliminaries ------------------------ */ |
#if USE_LOCKS |
/* |
When locks are defined, there are up to two global locks: |
* If HAVE_MORECORE, morecore_mutex protects sequences of calls to |
MORECORE. In many cases sys_alloc requires two calls, that should |
not be interleaved with calls by other threads. This does not |
protect against direct calls to MORECORE by other threads not |
using this lock, so there is still code to cope the best we can on |
interference. |
* magic_init_mutex ensures that mparams.magic and other |
unique mparams values are initialized only once. |
*/ |
#ifndef WIN32 |
/* By default use posix locks */ |
#include <pthread.h> |
#define MLOCK_T pthread_mutex_t |
#define INITIAL_LOCK(l) pthread_mutex_init(l, NULL) |
#define ACQUIRE_LOCK(l) pthread_mutex_lock(l) |
#define RELEASE_LOCK(l) pthread_mutex_unlock(l) |
#if HAVE_MORECORE |
static MLOCK_T morecore_mutex = PTHREAD_MUTEX_INITIALIZER; |
#endif /* HAVE_MORECORE */ |
static MLOCK_T magic_init_mutex = PTHREAD_MUTEX_INITIALIZER; |
#else /* WIN32 */ |
/* |
Because lock-protected regions have bounded times, and there |
are no recursive lock calls, we can use simple spinlocks. |
*/ |
#define MLOCK_T long |
static int win32_acquire_lock (MLOCK_T *sl) { |
for (;;) { |
#ifdef InterlockedCompareExchangePointer |
if (!InterlockedCompareExchange(sl, 1, 0)) |
return 0; |
#else /* Use older void* version */ |
if (!InterlockedCompareExchange((void**)sl, (void*)1, (void*)0)) |
return 0; |
#endif /* InterlockedCompareExchangePointer */ |
Sleep (0); |
} |
} |
static void win32_release_lock (MLOCK_T *sl) { |
InterlockedExchange (sl, 0); |
} |
#define INITIAL_LOCK(l) *(l)=0 |
#define ACQUIRE_LOCK(l) win32_acquire_lock(l) |
#define RELEASE_LOCK(l) win32_release_lock(l) |
#if HAVE_MORECORE |
static MLOCK_T morecore_mutex; |
#endif /* HAVE_MORECORE */ |
static MLOCK_T magic_init_mutex; |
#endif /* WIN32 */ |
#define USE_LOCK_BIT (2U) |
#else /* USE_LOCKS */ |
#define USE_LOCK_BIT (0U) |
#define INITIAL_LOCK(l) |
#endif /* USE_LOCKS */ |
#if USE_LOCKS && HAVE_MORECORE |
#define ACQUIRE_MORECORE_LOCK() ACQUIRE_LOCK(&morecore_mutex); |
#define RELEASE_MORECORE_LOCK() RELEASE_LOCK(&morecore_mutex); |
#else /* USE_LOCKS && HAVE_MORECORE */ |
#define ACQUIRE_MORECORE_LOCK() |
#define RELEASE_MORECORE_LOCK() |
#endif /* USE_LOCKS && HAVE_MORECORE */ |
#if USE_LOCKS |
#define ACQUIRE_MAGIC_INIT_LOCK() ACQUIRE_LOCK(&magic_init_mutex); |
#define RELEASE_MAGIC_INIT_LOCK() RELEASE_LOCK(&magic_init_mutex); |
#else /* USE_LOCKS */ |
#define ACQUIRE_MAGIC_INIT_LOCK() |
#define RELEASE_MAGIC_INIT_LOCK() |
#endif /* USE_LOCKS */ |
/* ----------------------- Chunk representations ------------------------ */ |
/* |
(The following includes lightly edited explanations by Colin Plumb.) |
The malloc_chunk declaration below is misleading (but accurate and |
necessary). It declares a "view" into memory allowing access to |
necessary fields at known offsets from a given base. |
Chunks of memory are maintained using a `boundary tag' method as |
originally described by Knuth. (See the paper by Paul Wilson |
ftp://ftp.cs.utexas.edu/pub/garbage/allocsrv.ps for a survey of such |
techniques.) Sizes of free chunks are stored both in the front of |
each chunk and at the end. This makes consolidating fragmented |
chunks into bigger chunks fast. The head fields also hold bits |
representing whether chunks are free or in use. |
Here are some pictures to make it clearer. They are "exploded" to |
show that the state of a chunk can be thought of as extending from |
the high 31 bits of the head field of its header through the |
prev_foot and PINUSE_BIT bit of the following chunk header. |
A chunk that's in use looks like: |
chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Size of previous chunk (if P = 1) | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |P| |
| Size of this chunk 1| +-+ |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | |
+- -+ |
| | |
+- -+ |
| : |
+- size - sizeof(size_t) available payload bytes -+ |
: | |
chunk-> +- -+ |
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |1| |
| Size of next chunk (may or may not be in use) | +-+ |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
And if it's free, it looks like this: |
chunk-> +- -+ |
| User payload (must be in use, or we would have merged!) | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |P| |
| Size of this chunk 0| +-+ |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Next pointer | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Prev pointer | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| : |
+- size - sizeof(struct chunk) unused bytes -+ |
: | |
chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Size of this chunk | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0| |
| Size of next chunk (must be in use, or we would have merged)| +-+ |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| : |
+- User payload -+ |
: | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|0| |
+-+ |
Note that since we always merge adjacent free chunks, the chunks |
adjacent to a free chunk must be in use. |
Given a pointer to a chunk (which can be derived trivially from the |
payload pointer) we can, in O(1) time, find out whether the adjacent |
chunks are free, and if so, unlink them from the lists that they |
are on and merge them with the current chunk. |
Chunks always begin on even word boundaries, so the mem portion |
(which is returned to the user) is also on an even word boundary, and |
thus at least double-word aligned. |
The P (PINUSE_BIT) bit, stored in the unused low-order bit of the |
chunk size (which is always a multiple of two words), is an in-use |
bit for the *previous* chunk. If that bit is *clear*, then the |
word before the current chunk size contains the previous chunk |
size, and can be used to find the front of the previous chunk. |
The very first chunk allocated always has this bit set, preventing |
access to non-existent (or non-owned) memory. If pinuse is set for |
any given chunk, then you CANNOT determine the size of the |
previous chunk, and might even get a memory addressing fault when |
trying to do so. |
The C (CINUSE_BIT) bit, stored in the unused second-lowest bit of |
the chunk size redundantly records whether the current chunk is |
inuse. This redundancy enables usage checks within free and realloc, |
and reduces indirection when freeing and consolidating chunks. |
Each freshly allocated chunk must have both cinuse and pinuse set. |
That is, each allocated chunk borders either a previously allocated |
and still in-use chunk, or the base of its memory arena. This is |
ensured by making all allocations from the the `lowest' part of any |
found chunk. Further, no free chunk physically borders another one, |
so each free chunk is known to be preceded and followed by either |
inuse chunks or the ends of memory. |
Note that the `foot' of the current chunk is actually represented |
as the prev_foot of the NEXT chunk. This makes it easier to |
deal with alignments etc but can be very confusing when trying |
to extend or adapt this code. |
The exceptions to all this are |
1. The special chunk `top' is the top-most available chunk (i.e., |
the one bordering the end of available memory). It is treated |
specially. Top is never included in any bin, is used only if |
no other chunk is available, and is released back to the |
system if it is very large (see M_TRIM_THRESHOLD). In effect, |
the top chunk is treated as larger (and thus less well |
fitting) than any other available chunk. The top chunk |
doesn't update its trailing size field since there is no next |
contiguous chunk that would have to index off it. However, |
space is still allocated for it (TOP_FOOT_SIZE) to enable |
separation or merging when space is extended. |
3. Chunks allocated via mmap, which have the lowest-order bit |
(IS_MMAPPED_BIT) set in their prev_foot fields, and do not set |
PINUSE_BIT in their head fields. Because they are allocated |
one-by-one, each must carry its own prev_foot field, which is |
also used to hold the offset this chunk has within its mmapped |
region, which is needed to preserve alignment. Each mmapped |
chunk is trailed by the first two fields of a fake next-chunk |
for sake of usage checks. |
*/ |
struct malloc_chunk { |
size_t prev_foot; /* Size of previous chunk (if free). */ |
size_t head; /* Size and inuse bits. */ |
struct malloc_chunk* fd; /* double links -- used only if free. */ |
struct malloc_chunk* bk; |
}; |
typedef struct malloc_chunk mchunk; |
typedef struct malloc_chunk* mchunkptr; |
typedef struct malloc_chunk* sbinptr; /* The type of bins of chunks */ |
typedef unsigned int bindex_t; /* Described below */ |
typedef unsigned int binmap_t; /* Described below */ |
typedef unsigned int flag_t; /* The type of various bit flag sets */ |
/* ------------------- Chunks sizes and alignments ----------------------- */ |
#define MCHUNK_SIZE (sizeof(mchunk)) |
#if FOOTERS |
#define CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) |
#else /* FOOTERS */ |
#define CHUNK_OVERHEAD (SIZE_T_SIZE) |
#endif /* FOOTERS */ |
/* MMapped chunks need a second word of overhead ... */ |
#define MMAP_CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) |
/* ... and additional padding for fake next-chunk at foot */ |
#define MMAP_FOOT_PAD (FOUR_SIZE_T_SIZES) |
/* The smallest size we can malloc is an aligned minimal chunk */ |
#define MIN_CHUNK_SIZE\ |
((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) |
/* conversion from malloc headers to user pointers, and back */ |
#define chunk2mem(p) ((void*)((char*)(p) + TWO_SIZE_T_SIZES)) |
#define mem2chunk(mem) ((mchunkptr)((char*)(mem) - TWO_SIZE_T_SIZES)) |
/* chunk associated with aligned address A */ |
#define align_as_chunk(A) (mchunkptr)((A) + align_offset(chunk2mem(A))) |
/* Bounds on request (not chunk) sizes. */ |
#define MAX_REQUEST ((-MIN_CHUNK_SIZE) << 2) |
#define MIN_REQUEST (MIN_CHUNK_SIZE - CHUNK_OVERHEAD - SIZE_T_ONE) |
/* pad request bytes into a usable size */ |
#define pad_request(req) \ |
(((req) + CHUNK_OVERHEAD + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) |
/* pad request, checking for minimum (but not maximum) */ |
#define request2size(req) \ |
(((req) < MIN_REQUEST)? MIN_CHUNK_SIZE : pad_request(req)) |
/* ------------------ Operations on head and foot fields ----------------- */ |
/* |
The head field of a chunk is or'ed with PINUSE_BIT when previous |
adjacent chunk in use, and or'ed with CINUSE_BIT if this chunk is in |
use. If the chunk was obtained with mmap, the prev_foot field has |
IS_MMAPPED_BIT set, otherwise holding the offset of the base of the |
mmapped region to the base of the chunk. |
*/ |
#define PINUSE_BIT (SIZE_T_ONE) |
#define CINUSE_BIT (SIZE_T_TWO) |
#define INUSE_BITS (PINUSE_BIT|CINUSE_BIT) |
/* Head value for fenceposts */ |
#define FENCEPOST_HEAD (INUSE_BITS|SIZE_T_SIZE) |
/* extraction of fields from head words */ |
#define cinuse(p) ((p)->head & CINUSE_BIT) |
#define pinuse(p) ((p)->head & PINUSE_BIT) |
#define chunksize(p) ((p)->head & ~(INUSE_BITS)) |
#define clear_pinuse(p) ((p)->head &= ~PINUSE_BIT) |
#define clear_cinuse(p) ((p)->head &= ~CINUSE_BIT) |
/* Treat space at ptr +/- offset as a chunk */ |
#define chunk_plus_offset(p, s) ((mchunkptr)(((char*)(p)) + (s))) |
#define chunk_minus_offset(p, s) ((mchunkptr)(((char*)(p)) - (s))) |
/* Ptr to next or previous physical malloc_chunk. */ |
#define next_chunk(p) ((mchunkptr)( ((char*)(p)) + ((p)->head & ~INUSE_BITS))) |
#define prev_chunk(p) ((mchunkptr)( ((char*)(p)) - ((p)->prev_foot) )) |
/* extract next chunk's pinuse bit */ |
#define next_pinuse(p) ((next_chunk(p)->head) & PINUSE_BIT) |
/* Get/set size at footer */ |
#define get_foot(p, s) (((mchunkptr)((char*)(p) + (s)))->prev_foot) |
#define set_foot(p, s) (((mchunkptr)((char*)(p) + (s)))->prev_foot = (s)) |
/* Set size, pinuse bit, and foot */ |
#define set_size_and_pinuse_of_free_chunk(p, s)\ |
((p)->head = (s|PINUSE_BIT), set_foot(p, s)) |
/* Set size, pinuse bit, foot, and clear next pinuse */ |
#define set_free_with_pinuse(p, s, n)\ |
(clear_pinuse(n), set_size_and_pinuse_of_free_chunk(p, s)) |
#define is_mmapped(p)\ |
(!((p)->head & PINUSE_BIT) && ((p)->prev_foot & IS_MMAPPED_BIT)) |
/* Get the internal overhead associated with chunk p */ |
#define overhead_for(p)\ |
(is_mmapped(p)? MMAP_CHUNK_OVERHEAD : CHUNK_OVERHEAD) |
/* Return true if malloced space is not necessarily cleared */ |
#if MMAP_CLEARS |
#define calloc_must_clear(p) (!is_mmapped(p)) |
#else /* MMAP_CLEARS */ |
#define calloc_must_clear(p) (1) |
#endif /* MMAP_CLEARS */ |
/* ---------------------- Overlaid data structures ----------------------- */ |
/* |
When chunks are not in use, they are treated as nodes of either |
lists or trees. |
"Small" chunks are stored in circular doubly-linked lists, and look |
like this: |
chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Size of previous chunk | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
`head:' | Size of chunk, in bytes |P| |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Forward pointer to next chunk in list | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Back pointer to previous chunk in list | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Unused space (may be 0 bytes long) . |
. . |
. | |
nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
`foot:' | Size of chunk, in bytes | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
Larger chunks are kept in a form of bitwise digital trees (aka |
tries) keyed on chunksizes. Because malloc_tree_chunks are only for |
free chunks greater than 256 bytes, their size doesn't impose any |
constraints on user chunk sizes. Each node looks like: |
chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Size of previous chunk | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
`head:' | Size of chunk, in bytes |P| |
mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Forward pointer to next chunk of same size | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Back pointer to previous chunk of same size | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Pointer to left child (child[0]) | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Pointer to right child (child[1]) | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Pointer to parent | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| bin index of this chunk | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| Unused space . |
. | |
nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
`foot:' | Size of chunk, in bytes | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
Each tree holding treenodes is a tree of unique chunk sizes. Chunks |
of the same size are arranged in a circularly-linked list, with only |
the oldest chunk (the next to be used, in our FIFO ordering) |
actually in the tree. (Tree members are distinguished by a non-null |
parent pointer.) If a chunk with the same size an an existing node |
is inserted, it is linked off the existing node using pointers that |
work in the same way as fd/bk pointers of small chunks. |
Each tree contains a power of 2 sized range of chunk sizes (the |
smallest is 0x100 <= x < 0x180), which is is divided in half at each |
tree level, with the chunks in the smaller half of the range (0x100 |
<= x < 0x140 for the top nose) in the left subtree and the larger |
half (0x140 <= x < 0x180) in the right subtree. This is, of course, |
done by inspecting individual bits. |
Using these rules, each node's left subtree contains all smaller |
sizes than its right subtree. However, the node at the root of each |
subtree has no particular ordering relationship to either. (The |
dividing line between the subtree sizes is based on trie relation.) |
If we remove the last chunk of a given size from the interior of the |
tree, we need to replace it with a leaf node. The tree ordering |
rules permit a node to be replaced by any leaf below it. |
The smallest chunk in a tree (a common operation in a best-fit |
allocator) can be found by walking a path to the leftmost leaf in |
the tree. Unlike a usual binary tree, where we follow left child |
pointers until we reach a null, here we follow the right child |
pointer any time the left one is null, until we reach a leaf with |
both child pointers null. The smallest chunk in the tree will be |
somewhere along that path. |
The worst case number of steps to add, find, or remove a node is |
bounded by the number of bits differentiating chunks within |
bins. Under current bin calculations, this ranges from 6 up to 21 |
(for 32 bit sizes) or up to 53 (for 64 bit sizes). The typical case |
is of course much better. |
*/ |
struct malloc_tree_chunk { |
/* The first four fields must be compatible with malloc_chunk */ |
size_t prev_foot; |
size_t head; |
struct malloc_tree_chunk* fd; |
struct malloc_tree_chunk* bk; |
struct malloc_tree_chunk* child[2]; |
struct malloc_tree_chunk* parent; |
bindex_t index; |
}; |
typedef struct malloc_tree_chunk tchunk; |
typedef struct malloc_tree_chunk* tchunkptr; |
typedef struct malloc_tree_chunk* tbinptr; /* The type of bins of trees */ |
/* A little helper macro for trees */ |
#define leftmost_child(t) ((t)->child[0] != 0? (t)->child[0] : (t)->child[1]) |
/* ----------------------------- Segments -------------------------------- */ |
/* |
Each malloc space may include non-contiguous segments, held in a |
list headed by an embedded malloc_segment record representing the |
top-most space. Segments also include flags holding properties of |
the space. Large chunks that are directly allocated by mmap are not |
included in this list. They are instead independently created and |
destroyed without otherwise keeping track of them. |
Segment management mainly comes into play for spaces allocated by |
MMAP. Any call to MMAP might or might not return memory that is |
adjacent to an existing segment. MORECORE normally contiguously |
extends the current space, so this space is almost always adjacent, |
which is simpler and faster to deal with. (This is why MORECORE is |
used preferentially to MMAP when both are available -- see |
sys_alloc.) When allocating using MMAP, we don't use any of the |
hinting mechanisms (inconsistently) supported in various |
implementations of unix mmap, or distinguish reserving from |
committing memory. Instead, we just ask for space, and exploit |
contiguity when we get it. It is probably possible to do |
better than this on some systems, but no general scheme seems |
to be significantly better. |
Management entails a simpler variant of the consolidation scheme |
used for chunks to reduce fragmentation -- new adjacent memory is |
normally prepended or appended to an existing segment. However, |
there are limitations compared to chunk consolidation that mostly |
reflect the fact that segment processing is relatively infrequent |
(occurring only when getting memory from system) and that we |
don't expect to have huge numbers of segments: |
* Segments are not indexed, so traversal requires linear scans. (It |
would be possible to index these, but is not worth the extra |
overhead and complexity for most programs on most platforms.) |
* New segments are only appended to old ones when holding top-most |
memory; if they cannot be prepended to others, they are held in |
different segments. |
Except for the top-most segment of an mstate, each segment record |
is kept at the tail of its segment. Segments are added by pushing |
segment records onto the list headed by &mstate.seg for the |
containing mstate. |
Segment flags control allocation/merge/deallocation policies: |
* If EXTERN_BIT set, then we did not allocate this segment, |
and so should not try to deallocate or merge with others. |
(This currently holds only for the initial segment passed |
into create_mspace_with_base.) |
* If IS_MMAPPED_BIT set, the segment may be merged with |
other surrounding mmapped segments and trimmed/de-allocated |
using munmap. |
* If neither bit is set, then the segment was obtained using |
MORECORE so can be merged with surrounding MORECORE'd segments |
and deallocated/trimmed using MORECORE with negative arguments. |
*/ |
struct malloc_segment { |
char* base; /* base address */ |
size_t size; /* allocated size */ |
struct malloc_segment* next; /* ptr to next segment */ |
flag_t sflags; /* mmap and extern flag */ |
}; |
#define is_mmapped_segment(S) ((S)->sflags & IS_MMAPPED_BIT) |
#define is_extern_segment(S) ((S)->sflags & EXTERN_BIT) |
typedef struct malloc_segment msegment; |
typedef struct malloc_segment* msegmentptr; |
/* ---------------------------- malloc_state ----------------------------- */ |
/* |
A malloc_state holds all of the bookkeeping for a space. |
The main fields are: |
Top |
The topmost chunk of the currently active segment. Its size is |
cached in topsize. The actual size of topmost space is |
topsize+TOP_FOOT_SIZE, which includes space reserved for adding |
fenceposts and segment records if necessary when getting more |
space from the system. The size at which to autotrim top is |
cached from mparams in trim_check, except that it is disabled if |
an autotrim fails. |
Designated victim (dv) |
This is the preferred chunk for servicing small requests that |
don't have exact fits. It is normally the chunk split off most |
recently to service another small request. Its size is cached in |
dvsize. The link fields of this chunk are not maintained since it |
is not kept in a bin. |
SmallBins |
An array of bin headers for free chunks. These bins hold chunks |
with sizes less than MIN_LARGE_SIZE bytes. Each bin contains |
chunks of all the same size, spaced 8 bytes apart. To simplify |
use in double-linked lists, each bin header acts as a malloc_chunk |
pointing to the real first node, if it exists (else pointing to |
itself). This avoids special-casing for headers. But to avoid |
waste, we allocate only the fd/bk pointers of bins, and then use |
repositioning tricks to treat these as the fields of a chunk. |
TreeBins |
Treebins are pointers to the roots of trees holding a range of |
sizes. There are 2 equally spaced treebins for each power of two |
from TREE_SHIFT to TREE_SHIFT+16. The last bin holds anything |
larger. |
Bin maps |
There is one bit map for small bins ("smallmap") and one for |
treebins ("treemap). Each bin sets its bit when non-empty, and |
clears the bit when empty. Bit operations are then used to avoid |
bin-by-bin searching -- nearly all "search" is done without ever |
looking at bins that won't be selected. The bit maps |
conservatively use 32 bits per map word, even if on 64bit system. |
For a good description of some of the bit-based techniques used |
here, see Henry S. Warren Jr's book "Hacker's Delight" (and |
supplement at http://hackersdelight.org/). Many of these are |
intended to reduce the branchiness of paths through malloc etc, as |
well as to reduce the number of memory locations read or written. |
Segments |
A list of segments headed by an embedded malloc_segment record |
representing the initial space. |
Address check support |
The least_addr field is the least address ever obtained from |
MORECORE or MMAP. Attempted frees and reallocs of any address less |
than this are trapped (unless INSECURE is defined). |
Magic tag |
A cross-check field that should always hold same value as mparams.magic. |
Flags |
Bits recording whether to use MMAP, locks, or contiguous MORECORE |
Statistics |
Each space keeps track of current and maximum system memory |
obtained via MORECORE or MMAP. |
Locking |
If USE_LOCKS is defined, the "mutex" lock is acquired and released |
around every public call using this mspace. |
*/ |
/* Bin types, widths and sizes */ |
#define NSMALLBINS (32U) |
#define NTREEBINS (32U) |
#define SMALLBIN_SHIFT (3U) |
#define SMALLBIN_WIDTH (SIZE_T_ONE << SMALLBIN_SHIFT) |
#define TREEBIN_SHIFT (8U) |
#define MIN_LARGE_SIZE (SIZE_T_ONE << TREEBIN_SHIFT) |
#define MAX_SMALL_SIZE (MIN_LARGE_SIZE - SIZE_T_ONE) |
#define MAX_SMALL_REQUEST (MAX_SMALL_SIZE - CHUNK_ALIGN_MASK - CHUNK_OVERHEAD) |
struct malloc_state { |
binmap_t smallmap; |
binmap_t treemap; |
size_t dvsize; |
size_t topsize; |
char* least_addr; |
mchunkptr dv; |
mchunkptr top; |
size_t trim_check; |
size_t magic; |
mchunkptr smallbins[(NSMALLBINS+1)*2]; |
tbinptr treebins[NTREEBINS]; |
size_t footprint; |
size_t max_footprint; |
flag_t mflags; |
#if USE_LOCKS |
MLOCK_T mutex; /* locate lock among fields that rarely change */ |
#endif /* USE_LOCKS */ |
msegment seg; |
}; |
typedef struct malloc_state* mstate; |
/* ------------- Global malloc_state and malloc_params ------------------- */ |
/* |
malloc_params holds global properties, including those that can be |
dynamically set using mallopt. There is a single instance, mparams, |
initialized in init_mparams. |
*/ |
struct malloc_params { |
size_t magic; |
size_t page_size; |
size_t granularity; |
size_t mmap_threshold; |
size_t trim_threshold; |
flag_t default_mflags; |
}; |
static struct malloc_params mparams; |
/* The global malloc_state used for all non-"mspace" calls */ |
static struct malloc_state _gm_; |
#define gm (&_gm_) |
#define is_global(M) ((M) == &_gm_) |
#define is_initialized(M) ((M)->top != 0) |
/* -------------------------- system alloc setup ------------------------- */ |
/* Operations on mflags */ |
#define use_lock(M) ((M)->mflags & USE_LOCK_BIT) |
#define enable_lock(M) ((M)->mflags |= USE_LOCK_BIT) |
#define disable_lock(M) ((M)->mflags &= ~USE_LOCK_BIT) |
#define use_mmap(M) ((M)->mflags & USE_MMAP_BIT) |
#define enable_mmap(M) ((M)->mflags |= USE_MMAP_BIT) |
#define disable_mmap(M) ((M)->mflags &= ~USE_MMAP_BIT) |
#define use_noncontiguous(M) ((M)->mflags & USE_NONCONTIGUOUS_BIT) |
#define disable_contiguous(M) ((M)->mflags |= USE_NONCONTIGUOUS_BIT) |
#define set_lock(M,L)\ |
((M)->mflags = (L)?\ |
((M)->mflags | USE_LOCK_BIT) :\ |
((M)->mflags & ~USE_LOCK_BIT)) |
/* page-align a size */ |
#define page_align(S)\ |
(((S) + (mparams.page_size)) & ~(mparams.page_size - SIZE_T_ONE)) |
/* granularity-align a size */ |
#define granularity_align(S)\ |
(((S) + (mparams.granularity)) & ~(mparams.granularity - SIZE_T_ONE)) |
#define is_page_aligned(S)\ |
(((size_t)(S) & (mparams.page_size - SIZE_T_ONE)) == 0) |
#define is_granularity_aligned(S)\ |
(((size_t)(S) & (mparams.granularity - SIZE_T_ONE)) == 0) |
/* True if segment S holds address A */ |
#define segment_holds(S, A)\ |
((char*)(A) >= S->base && (char*)(A) < S->base + S->size) |
/* Return segment holding given address */ |
static msegmentptr segment_holding(mstate m, char* addr) { |
msegmentptr sp = &m->seg; |
for (;;) { |
if (addr >= sp->base && addr < sp->base + sp->size) |
return sp; |
if ((sp = sp->next) == 0) |
return 0; |
} |
} |
/* Return true if segment contains a segment link */ |
static int has_segment_link(mstate m, msegmentptr ss) { |
msegmentptr sp = &m->seg; |
for (;;) { |
if ((char*)sp >= ss->base && (char*)sp < ss->base + ss->size) |
return 1; |
if ((sp = sp->next) == 0) |
return 0; |
} |
} |
#ifndef MORECORE_CANNOT_TRIM |
#define should_trim(M,s) ((s) > (M)->trim_check) |
#else /* MORECORE_CANNOT_TRIM */ |
#define should_trim(M,s) (0) |
#endif /* MORECORE_CANNOT_TRIM */ |
/* |
TOP_FOOT_SIZE is padding at the end of a segment, including space |
that may be needed to place segment records and fenceposts when new |
noncontiguous segments are added. |
*/ |
#define TOP_FOOT_SIZE\ |
(align_offset(chunk2mem(0))+pad_request(sizeof(struct malloc_segment))+MIN_CHUNK_SIZE) |
/* ------------------------------- Hooks -------------------------------- */ |
/* |
PREACTION should be defined to return 0 on success, and nonzero on |
failure. If you are not using locking, you can redefine these to do |
anything you like. |
*/ |
#if USE_LOCKS |
/* Ensure locks are initialized */ |
#define GLOBALLY_INITIALIZE() (mparams.page_size == 0 && init_mparams()) |
#define PREACTION(M) ((GLOBALLY_INITIALIZE() || use_lock(M))? ACQUIRE_LOCK(&(M)->mutex) : 0) |
#define POSTACTION(M) { if (use_lock(M)) RELEASE_LOCK(&(M)->mutex); } |
#else /* USE_LOCKS */ |
#ifndef PREACTION |
#define PREACTION(M) (0) |
#endif /* PREACTION */ |
#ifndef POSTACTION |
#define POSTACTION(M) |
#endif /* POSTACTION */ |
#endif /* USE_LOCKS */ |
/* |
CORRUPTION_ERROR_ACTION is triggered upon detected bad addresses. |
USAGE_ERROR_ACTION is triggered on detected bad frees and |
reallocs. The argument p is an address that might have triggered the |
fault. It is ignored by the two predefined actions, but might be |
useful in custom actions that try to help diagnose errors. |
*/ |
#if PROCEED_ON_ERROR |
/* A count of the number of corruption errors causing resets */ |
int malloc_corruption_error_count; |
/* default corruption action */ |
static void reset_on_error(mstate m); |
#define CORRUPTION_ERROR_ACTION(m) reset_on_error(m) |
#define USAGE_ERROR_ACTION(m, p) |
#else /* PROCEED_ON_ERROR */ |
#ifndef CORRUPTION_ERROR_ACTION |
#define CORRUPTION_ERROR_ACTION(m) ABORT |
#endif /* CORRUPTION_ERROR_ACTION */ |
#ifndef USAGE_ERROR_ACTION |
#define USAGE_ERROR_ACTION(m,p) ABORT |
#endif /* USAGE_ERROR_ACTION */ |
#endif /* PROCEED_ON_ERROR */ |
/* -------------------------- Debugging setup ---------------------------- */ |
#if ! DEBUG |
#define check_free_chunk(M,P) |
#define check_inuse_chunk(M,P) |
#define check_malloced_chunk(M,P,N) |
#define check_mmapped_chunk(M,P) |
#define check_malloc_state(M) |
#define check_top_chunk(M,P) |
#else /* DEBUG */ |
#define check_free_chunk(M,P) do_check_free_chunk(M,P) |
#define check_inuse_chunk(M,P) do_check_inuse_chunk(M,P) |
#define check_top_chunk(M,P) do_check_top_chunk(M,P) |
#define check_malloced_chunk(M,P,N) do_check_malloced_chunk(M,P,N) |
#define check_mmapped_chunk(M,P) do_check_mmapped_chunk(M,P) |
#define check_malloc_state(M) do_check_malloc_state(M) |
static void do_check_any_chunk(mstate m, mchunkptr p); |
static void do_check_top_chunk(mstate m, mchunkptr p); |
static void do_check_mmapped_chunk(mstate m, mchunkptr p); |
static void do_check_inuse_chunk(mstate m, mchunkptr p); |
static void do_check_free_chunk(mstate m, mchunkptr p); |
static void do_check_malloced_chunk(mstate m, void* mem, size_t s); |
static void do_check_tree(mstate m, tchunkptr t); |
static void do_check_treebin(mstate m, bindex_t i); |
static void do_check_smallbin(mstate m, bindex_t i); |
static void do_check_malloc_state(mstate m); |
static int bin_find(mstate m, mchunkptr x); |
static size_t traverse_and_check(mstate m); |
#endif /* DEBUG */ |
/* ---------------------------- Indexing Bins ---------------------------- */ |
#define is_small(s) (((s) >> SMALLBIN_SHIFT) < NSMALLBINS) |
#define small_index(s) ((s) >> SMALLBIN_SHIFT) |
#define small_index2size(i) ((i) << SMALLBIN_SHIFT) |
#define MIN_SMALL_INDEX (small_index(MIN_CHUNK_SIZE)) |
/* addressing by index. See above about smallbin repositioning */ |
#define smallbin_at(M, i) ((sbinptr)((char*)&((M)->smallbins[(i)<<1]))) |
#define treebin_at(M,i) (&((M)->treebins[i])) |
/* assign tree index for size S to variable I */ |
#if defined(__GNUC__) && defined(i386) |
#define compute_tree_index(S, I)\ |
{\ |
size_t X = S >> TREEBIN_SHIFT;\ |
if (X == 0)\ |
I = 0;\ |
else if (X > 0xFFFF)\ |
I = NTREEBINS-1;\ |
else {\ |
unsigned int K;\ |
__asm__("bsrl %1,%0\n\t" : "=r" (K) : "rm" (X));\ |
I = (bindex_t)((K << 1) + ((S >> (K + (TREEBIN_SHIFT-1)) & 1)));\ |
}\ |
} |
#else /* GNUC */ |
#define compute_tree_index(S, I)\ |
{\ |
size_t X = S >> TREEBIN_SHIFT;\ |
if (X == 0)\ |
I = 0;\ |
else if (X > 0xFFFF)\ |
I = NTREEBINS-1;\ |
else {\ |
unsigned int Y = (unsigned int)X;\ |
unsigned int N = ((Y - 0x100) >> 16) & 8;\ |
unsigned int K = (((Y <<= N) - 0x1000) >> 16) & 4;\ |
N += K;\ |
N += K = (((Y <<= K) - 0x4000) >> 16) & 2;\ |
K = 14 - N + ((Y <<= K) >> 15);\ |
I = (K << 1) + ((S >> (K + (TREEBIN_SHIFT-1)) & 1));\ |
}\ |
} |
#endif /* GNUC */ |
/* Bit representing maximum resolved size in a treebin at i */ |
#define bit_for_tree_index(i) \ |
(i == NTREEBINS-1)? (SIZE_T_BITSIZE-1) : (((i) >> 1) + TREEBIN_SHIFT - 2) |
/* Shift placing maximum resolved bit in a treebin at i as sign bit */ |
#define leftshift_for_tree_index(i) \ |
((i == NTREEBINS-1)? 0 : \ |
((SIZE_T_BITSIZE-SIZE_T_ONE) - (((i) >> 1) + TREEBIN_SHIFT - 2))) |
/* The size of the smallest chunk held in bin with index i */ |
#define minsize_for_tree_index(i) \ |
((SIZE_T_ONE << (((i) >> 1) + TREEBIN_SHIFT)) | \ |
(((size_t)((i) & SIZE_T_ONE)) << (((i) >> 1) + TREEBIN_SHIFT - 1))) |
/* ------------------------ Operations on bin maps ----------------------- */ |
/* bit corresponding to given index */ |
#define idx2bit(i) ((binmap_t)(1) << (i)) |
/* Mark/Clear bits with given index */ |
#define mark_smallmap(M,i) ((M)->smallmap |= idx2bit(i)) |
#define clear_smallmap(M,i) ((M)->smallmap &= ~idx2bit(i)) |
#define smallmap_is_marked(M,i) ((M)->smallmap & idx2bit(i)) |
#define mark_treemap(M,i) ((M)->treemap |= idx2bit(i)) |
#define clear_treemap(M,i) ((M)->treemap &= ~idx2bit(i)) |
#define treemap_is_marked(M,i) ((M)->treemap & idx2bit(i)) |
/* index corresponding to given bit */ |
#if defined(__GNUC__) && defined(i386) |
#define compute_bit2idx(X, I)\ |
{\ |
unsigned int J;\ |
__asm__("bsfl %1,%0\n\t" : "=r" (J) : "rm" (X));\ |
I = (bindex_t)J;\ |
} |
#else /* GNUC */ |
#if USE_BUILTIN_FFS |
#define compute_bit2idx(X, I) I = ffs(X)-1 |
#else /* USE_BUILTIN_FFS */ |
#define compute_bit2idx(X, I)\ |
{\ |
unsigned int Y = X - 1;\ |
unsigned int K = Y >> (16-4) & 16;\ |
unsigned int N = K; Y >>= K;\ |
N += K = Y >> (8-3) & 8; Y >>= K;\ |
N += K = Y >> (4-2) & 4; Y >>= K;\ |
N += K = Y >> (2-1) & 2; Y >>= K;\ |
N += K = Y >> (1-0) & 1; Y >>= K;\ |
I = (bindex_t)(N + Y);\ |
} |
#endif /* USE_BUILTIN_FFS */ |
#endif /* GNUC */ |
/* isolate the least set bit of a bitmap */ |
#define least_bit(x) ((x) & -(x)) |
/* mask with all bits to left of least bit of x on */ |
#define left_bits(x) ((x<<1) | -(x<<1)) |
/* mask with all bits to left of or equal to least bit of x on */ |
#define same_or_left_bits(x) ((x) | -(x)) |
/* ----------------------- Runtime Check Support ------------------------- */ |
/* |
For security, the main invariant is that malloc/free/etc never |
writes to a static address other than malloc_state, unless static |
malloc_state itself has been corrupted, which cannot occur via |
malloc (because of these checks). In essence this means that we |
believe all pointers, sizes, maps etc held in malloc_state, but |
check all of those linked or offsetted from other embedded data |
structures. These checks are interspersed with main code in a way |
that tends to minimize their run-time cost. |
When FOOTERS is defined, in addition to range checking, we also |
verify footer fields of inuse chunks, which can be used guarantee |
that the mstate controlling malloc/free is intact. This is a |
streamlined version of the approach described by William Robertson |
et al in "Run-time Detection of Heap-based Overflows" LISA'03 |
http://www.usenix.org/events/lisa03/tech/robertson.html The footer |
of an inuse chunk holds the xor of its mstate and a random seed, |
that is checked upon calls to free() and realloc(). This is |
(probablistically) unguessable from outside the program, but can be |
computed by any code successfully malloc'ing any chunk, so does not |
itself provide protection against code that has already broken |
security through some other means. Unlike Robertson et al, we |
always dynamically check addresses of all offset chunks (previous, |
next, etc). This turns out to be cheaper than relying on hashes. |
*/ |
#if !INSECURE |
/* Check if address a is at least as high as any from MORECORE or MMAP */ |
#define ok_address(M, a) ((char*)(a) >= (M)->least_addr) |
/* Check if address of next chunk n is higher than base chunk p */ |
#define ok_next(p, n) ((char*)(p) < (char*)(n)) |
/* Check if p has its cinuse bit on */ |
#define ok_cinuse(p) cinuse(p) |
/* Check if p has its pinuse bit on */ |
#define ok_pinuse(p) pinuse(p) |
#else /* !INSECURE */ |
#define ok_address(M, a) (1) |
#define ok_next(b, n) (1) |
#define ok_cinuse(p) (1) |
#define ok_pinuse(p) (1) |
#endif /* !INSECURE */ |
#if (FOOTERS && !INSECURE) |
/* Check if (alleged) mstate m has expected magic field */ |
#define ok_magic(M) ((M)->magic == mparams.magic) |
#else /* (FOOTERS && !INSECURE) */ |
#define ok_magic(M) (1) |
#endif /* (FOOTERS && !INSECURE) */ |
/* In gcc, use __builtin_expect to minimize impact of checks */ |
#if !INSECURE |
#if defined(__GNUC__) && __GNUC__ >= 3 |
#define RTCHECK(e) __builtin_expect(e, 1) |
#else /* GNUC */ |
#define RTCHECK(e) (e) |
#endif /* GNUC */ |
#else /* !INSECURE */ |
#define RTCHECK(e) (1) |
#endif /* !INSECURE */ |
/* macros to set up inuse chunks with or without footers */ |
#if !FOOTERS |
#define mark_inuse_foot(M,p,s) |
/* Set cinuse bit and pinuse bit of next chunk */ |
#define set_inuse(M,p,s)\ |
((p)->head = (((p)->head & PINUSE_BIT)|s|CINUSE_BIT),\ |
((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT) |
/* Set cinuse and pinuse of this chunk and pinuse of next chunk */ |
#define set_inuse_and_pinuse(M,p,s)\ |
((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT) |
/* Set size, cinuse and pinuse bit of this chunk */ |
#define set_size_and_pinuse_of_inuse_chunk(M, p, s)\ |
((p)->head = (s|PINUSE_BIT|CINUSE_BIT)) |
#else /* FOOTERS */ |
/* Set foot of inuse chunk to be xor of mstate and seed */ |
#define mark_inuse_foot(M,p,s)\ |
(((mchunkptr)((char*)(p) + (s)))->prev_foot = ((size_t)(M) ^ mparams.magic)) |
#define get_mstate_for(p)\ |
((mstate)(((mchunkptr)((char*)(p) +\ |
(chunksize(p))))->prev_foot ^ mparams.magic)) |
#define set_inuse(M,p,s)\ |
((p)->head = (((p)->head & PINUSE_BIT)|s|CINUSE_BIT),\ |
(((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT), \ |
mark_inuse_foot(M,p,s)) |
#define set_inuse_and_pinuse(M,p,s)\ |
((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
(((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT),\ |
mark_inuse_foot(M,p,s)) |
#define set_size_and_pinuse_of_inuse_chunk(M, p, s)\ |
((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
mark_inuse_foot(M, p, s)) |
#endif /* !FOOTERS */ |
/* ---------------------------- setting mparams -------------------------- */ |
/* Initialize mparams */ |
static int init_mparams(void) { |
if (mparams.page_size == 0) { |
size_t s; |
mparams.mmap_threshold = DEFAULT_MMAP_THRESHOLD; |
mparams.trim_threshold = DEFAULT_TRIM_THRESHOLD; |
#if MORECORE_CONTIGUOUS |
mparams.default_mflags = USE_LOCK_BIT|USE_MMAP_BIT; |
#else /* MORECORE_CONTIGUOUS */ |
mparams.default_mflags = USE_LOCK_BIT|USE_MMAP_BIT|USE_NONCONTIGUOUS_BIT; |
#endif /* MORECORE_CONTIGUOUS */ |
#if (FOOTERS && !INSECURE) |
{ |
#if USE_DEV_RANDOM |
int fd; |
unsigned char buf[sizeof(size_t)]; |
/* Try to use /dev/urandom, else fall back on using time */ |
if ((fd = open("/dev/urandom", O_RDONLY)) >= 0 && |
read(fd, buf, sizeof(buf)) == sizeof(buf)) { |
s = *((size_t *) buf); |
close(fd); |
} |
else |
#endif /* USE_DEV_RANDOM */ |
s = (size_t)(time(0) ^ (size_t)0x55555555U); |
s |= (size_t)8U; /* ensure nonzero */ |
s &= ~(size_t)7U; /* improve chances of fault for bad values */ |
} |
#else /* (FOOTERS && !INSECURE) */ |
s = (size_t)0x58585858U; |
#endif /* (FOOTERS && !INSECURE) */ |
ACQUIRE_MAGIC_INIT_LOCK(); |
if (mparams.magic == 0) { |
mparams.magic = s; |
/* Set up lock for main malloc area */ |
INITIAL_LOCK(&gm->mutex); |
gm->mflags = mparams.default_mflags; |
} |
RELEASE_MAGIC_INIT_LOCK(); |
#ifndef WIN32 |
mparams.page_size = malloc_getpagesize; |
mparams.granularity = ((DEFAULT_GRANULARITY != 0)? |
DEFAULT_GRANULARITY : mparams.page_size); |
#else /* WIN32 */ |
{ |
SYSTEM_INFO system_info; |
GetSystemInfo(&system_info); |
mparams.page_size = system_info.dwPageSize; |
mparams.granularity = system_info.dwAllocationGranularity; |
} |
#endif /* WIN32 */ |
/* Sanity-check configuration: |
size_t must be unsigned and as wide as pointer type. |
ints must be at least 4 bytes. |
alignment must be at least 8. |
Alignment, min chunk size, and page size must all be powers of 2. |
*/ |
if ((sizeof(size_t) != sizeof(char*)) || |
(MAX_SIZE_T < MIN_CHUNK_SIZE) || |
(sizeof(int) < 4) || |
(MALLOC_ALIGNMENT < (size_t)8U) || |
((MALLOC_ALIGNMENT & (MALLOC_ALIGNMENT-SIZE_T_ONE)) != 0) || |
((MCHUNK_SIZE & (MCHUNK_SIZE-SIZE_T_ONE)) != 0) || |
((mparams.granularity & (mparams.granularity-SIZE_T_ONE)) != 0) || |
((mparams.page_size & (mparams.page_size-SIZE_T_ONE)) != 0)) |
ABORT; |
} |
return 0; |
} |
/* support for mallopt */ |
static int change_mparam(int param_number, int value) { |
size_t val = (size_t)value; |
init_mparams(); |
switch(param_number) { |
case M_TRIM_THRESHOLD: |
mparams.trim_threshold = val; |
return 1; |
case M_GRANULARITY: |
if (val >= mparams.page_size && ((val & (val-1)) == 0)) { |
mparams.granularity = val; |
return 1; |
} |
else |
return 0; |
case M_MMAP_THRESHOLD: |
mparams.mmap_threshold = val; |
return 1; |
default: |
return 0; |
} |
} |
#if DEBUG |
/* ------------------------- Debugging Support --------------------------- */ |
/* Check properties of any chunk, whether free, inuse, mmapped etc */ |
static void do_check_any_chunk(mstate m, mchunkptr p) { |
assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
assert(ok_address(m, p)); |
} |
/* Check properties of top chunk */ |
static void do_check_top_chunk(mstate m, mchunkptr p) { |
msegmentptr sp = segment_holding(m, (char*)p); |
size_t sz = chunksize(p); |
assert(sp != 0); |
assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
assert(ok_address(m, p)); |
assert(sz == m->topsize); |
assert(sz > 0); |
assert(sz == ((sp->base + sp->size) - (char*)p) - TOP_FOOT_SIZE); |
assert(pinuse(p)); |
assert(!next_pinuse(p)); |
} |
/* Check properties of (inuse) mmapped chunks */ |
static void do_check_mmapped_chunk(mstate m, mchunkptr p) { |
size_t sz = chunksize(p); |
size_t len = (sz + (p->prev_foot & ~IS_MMAPPED_BIT) + MMAP_FOOT_PAD); |
assert(is_mmapped(p)); |
assert(use_mmap(m)); |
assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
assert(ok_address(m, p)); |
assert(!is_small(sz)); |
assert((len & (mparams.page_size-SIZE_T_ONE)) == 0); |
assert(chunk_plus_offset(p, sz)->head == FENCEPOST_HEAD); |
assert(chunk_plus_offset(p, sz+SIZE_T_SIZE)->head == 0); |
} |
/* Check properties of inuse chunks */ |
static void do_check_inuse_chunk(mstate m, mchunkptr p) { |
do_check_any_chunk(m, p); |
assert(cinuse(p)); |
assert(next_pinuse(p)); |
/* If not pinuse and not mmapped, previous chunk has OK offset */ |
assert(is_mmapped(p) || pinuse(p) || next_chunk(prev_chunk(p)) == p); |
if (is_mmapped(p)) |
do_check_mmapped_chunk(m, p); |
} |
/* Check properties of free chunks */ |
static void do_check_free_chunk(mstate m, mchunkptr p) { |
size_t sz = p->head & ~(PINUSE_BIT|CINUSE_BIT); |
mchunkptr next = chunk_plus_offset(p, sz); |
do_check_any_chunk(m, p); |
assert(!cinuse(p)); |
assert(!next_pinuse(p)); |
assert (!is_mmapped(p)); |
if (p != m->dv && p != m->top) { |
if (sz >= MIN_CHUNK_SIZE) { |
assert((sz & CHUNK_ALIGN_MASK) == 0); |
assert(is_aligned(chunk2mem(p))); |
assert(next->prev_foot == sz); |
assert(pinuse(p)); |
assert (next == m->top || cinuse(next)); |
assert(p->fd->bk == p); |
assert(p->bk->fd == p); |
} |
else /* markers are always of size SIZE_T_SIZE */ |
assert(sz == SIZE_T_SIZE); |
} |
} |
/* Check properties of malloced chunks at the point they are malloced */ |
static void do_check_malloced_chunk(mstate m, void* mem, size_t s) { |
if (mem != 0) { |
mchunkptr p = mem2chunk(mem); |
size_t sz = p->head & ~(PINUSE_BIT|CINUSE_BIT); |
do_check_inuse_chunk(m, p); |
assert((sz & CHUNK_ALIGN_MASK) == 0); |
assert(sz >= MIN_CHUNK_SIZE); |
assert(sz >= s); |
/* unless mmapped, size is less than MIN_CHUNK_SIZE more than request */ |
assert(is_mmapped(p) || sz < (s + MIN_CHUNK_SIZE)); |
} |
} |
/* Check a tree and its subtrees. */ |
static void do_check_tree(mstate m, tchunkptr t) { |
tchunkptr head = 0; |
tchunkptr u = t; |
bindex_t tindex = t->index; |
size_t tsize = chunksize(t); |
bindex_t idx; |
compute_tree_index(tsize, idx); |
assert(tindex == idx); |
assert(tsize >= MIN_LARGE_SIZE); |
assert(tsize >= minsize_for_tree_index(idx)); |
assert((idx == NTREEBINS-1) || (tsize < minsize_for_tree_index((idx+1)))); |
do { /* traverse through chain of same-sized nodes */ |
do_check_any_chunk(m, ((mchunkptr)u)); |
assert(u->index == tindex); |
assert(chunksize(u) == tsize); |
assert(!cinuse(u)); |
assert(!next_pinuse(u)); |
assert(u->fd->bk == u); |
assert(u->bk->fd == u); |
if (u->parent == 0) { |
assert(u->child[0] == 0); |
assert(u->child[1] == 0); |
} |
else { |
assert(head == 0); /* only one node on chain has parent */ |
head = u; |
assert(u->parent != u); |
assert (u->parent->child[0] == u || |
u->parent->child[1] == u || |
*((tbinptr*)(u->parent)) == u); |
if (u->child[0] != 0) { |
assert(u->child[0]->parent == u); |
assert(u->child[0] != u); |
do_check_tree(m, u->child[0]); |
} |
if (u->child[1] != 0) { |
assert(u->child[1]->parent == u); |
assert(u->child[1] != u); |
do_check_tree(m, u->child[1]); |
} |
if (u->child[0] != 0 && u->child[1] != 0) { |
assert(chunksize(u->child[0]) < chunksize(u->child[1])); |
} |
} |
u = u->fd; |
} while (u != t); |
assert(head != 0); |
} |
/* Check all the chunks in a treebin. */ |
static void do_check_treebin(mstate m, bindex_t i) { |
tbinptr* tb = treebin_at(m, i); |
tchunkptr t = *tb; |
int empty = (m->treemap & (1U << i)) == 0; |
if (t == 0) |
assert(empty); |
if (!empty) |
do_check_tree(m, t); |
} |
/* Check all the chunks in a smallbin. */ |
static void do_check_smallbin(mstate m, bindex_t i) { |
sbinptr b = smallbin_at(m, i); |
mchunkptr p = b->bk; |
unsigned int empty = (m->smallmap & (1U << i)) == 0; |
if (p == b) |
assert(empty); |
if (!empty) { |
for (; p != b; p = p->bk) { |
size_t size = chunksize(p); |
mchunkptr q; |
/* each chunk claims to be free */ |
do_check_free_chunk(m, p); |
/* chunk belongs in bin */ |
assert(small_index(size) == i); |
assert(p->bk == b || chunksize(p->bk) == chunksize(p)); |
/* chunk is followed by an inuse chunk */ |
q = next_chunk(p); |
if (q->head != FENCEPOST_HEAD) |
do_check_inuse_chunk(m, q); |
} |
} |
} |
/* Find x in a bin. Used in other check functions. */ |
static int bin_find(mstate m, mchunkptr x) { |
size_t size = chunksize(x); |
if (is_small(size)) { |
bindex_t sidx = small_index(size); |
sbinptr b = smallbin_at(m, sidx); |
if (smallmap_is_marked(m, sidx)) { |
mchunkptr p = b; |
do { |
if (p == x) |
return 1; |
} while ((p = p->fd) != b); |
} |
} |
else { |
bindex_t tidx; |
compute_tree_index(size, tidx); |
if (treemap_is_marked(m, tidx)) { |
tchunkptr t = *treebin_at(m, tidx); |
size_t sizebits = size << leftshift_for_tree_index(tidx); |
while (t != 0 && chunksize(t) != size) { |
t = t->child[(sizebits >> (SIZE_T_BITSIZE-SIZE_T_ONE)) & 1]; |
sizebits <<= 1; |
} |
if (t != 0) { |
tchunkptr u = t; |
do { |
if (u == (tchunkptr)x) |
return 1; |
} while ((u = u->fd) != t); |
} |
} |
} |
return 0; |
} |
/* Traverse each chunk and check it; return total */ |
static size_t traverse_and_check(mstate m) { |
size_t sum = 0; |
if (is_initialized(m)) { |
msegmentptr s = &m->seg; |
sum += m->topsize + TOP_FOOT_SIZE; |
while (s != 0) { |
mchunkptr q = align_as_chunk(s->base); |
mchunkptr lastq = 0; |
assert(pinuse(q)); |
while (segment_holds(s, q) && |
q != m->top && q->head != FENCEPOST_HEAD) { |
sum += chunksize(q); |
if (cinuse(q)) { |
assert(!bin_find(m, q)); |
do_check_inuse_chunk(m, q); |
} |
else { |
assert(q == m->dv || bin_find(m, q)); |
assert(lastq == 0 || cinuse(lastq)); /* Not 2 consecutive free */ |
do_check_free_chunk(m, q); |
} |
lastq = q; |
q = next_chunk(q); |
} |
s = s->next; |
} |
} |
return sum; |
} |
/* Check all properties of malloc_state. */ |
static void do_check_malloc_state(mstate m) { |
bindex_t i; |
size_t total; |
/* check bins */ |
for (i = 0; i < NSMALLBINS; ++i) |
do_check_smallbin(m, i); |
for (i = 0; i < NTREEBINS; ++i) |
do_check_treebin(m, i); |
if (m->dvsize != 0) { /* check dv chunk */ |
do_check_any_chunk(m, m->dv); |
assert(m->dvsize == chunksize(m->dv)); |
assert(m->dvsize >= MIN_CHUNK_SIZE); |
assert(bin_find(m, m->dv) == 0); |
} |
if (m->top != 0) { /* check top chunk */ |
do_check_top_chunk(m, m->top); |
assert(m->topsize == chunksize(m->top)); |
assert(m->topsize > 0); |
assert(bin_find(m, m->top) == 0); |
} |
total = traverse_and_check(m); |
assert(total <= m->footprint); |
assert(m->footprint <= m->max_footprint); |
} |
#endif /* DEBUG */ |
/* ----------------------------- statistics ------------------------------ */ |
#if !NO_MALLINFO |
static struct mallinfo internal_mallinfo(mstate m) { |
struct mallinfo nm = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
if (!PREACTION(m)) { |
check_malloc_state(m); |
if (is_initialized(m)) { |
size_t nfree = SIZE_T_ONE; /* top always free */ |
size_t mfree = m->topsize + TOP_FOOT_SIZE; |
size_t sum = mfree; |
msegmentptr s = &m->seg; |
while (s != 0) { |
mchunkptr q = align_as_chunk(s->base); |
while (segment_holds(s, q) && |
q != m->top && q->head != FENCEPOST_HEAD) { |
size_t sz = chunksize(q); |
sum += sz; |
if (!cinuse(q)) { |
mfree += sz; |
++nfree; |
} |
q = next_chunk(q); |
} |
s = s->next; |
} |
nm.arena = sum; |
nm.ordblks = nfree; |
nm.hblkhd = m->footprint - sum; |
nm.usmblks = m->max_footprint; |
nm.uordblks = m->footprint - mfree; |
nm.fordblks = mfree; |
nm.keepcost = m->topsize; |
} |
POSTACTION(m); |
} |
return nm; |
} |
#endif /* !NO_MALLINFO */ |
static void internal_malloc_stats(mstate m) { |
if (!PREACTION(m)) { |
size_t maxfp = 0; |
size_t fp = 0; |
size_t used = 0; |
check_malloc_state(m); |
if (is_initialized(m)) { |
msegmentptr s = &m->seg; |
maxfp = m->max_footprint; |
fp = m->footprint; |
used = fp - (m->topsize + TOP_FOOT_SIZE); |
while (s != 0) { |
mchunkptr q = align_as_chunk(s->base); |
while (segment_holds(s, q) && |
q != m->top && q->head != FENCEPOST_HEAD) { |
if (!cinuse(q)) |
used -= chunksize(q); |
q = next_chunk(q); |
} |
s = s->next; |
} |
} |
fprintf(stderr, "max system bytes = %10lu\n", (unsigned long)(maxfp)); |
fprintf(stderr, "system bytes = %10lu\n", (unsigned long)(fp)); |
fprintf(stderr, "in use bytes = %10lu\n", (unsigned long)(used)); |
POSTACTION(m); |
} |
} |
/* ----------------------- Operations on smallbins ----------------------- */ |
/* |
Various forms of linking and unlinking are defined as macros. Even |
the ones for trees, which are very long but have very short typical |
paths. This is ugly but reduces reliance on inlining support of |
compilers. |
*/ |
/* Link a free chunk into a smallbin */ |
#define insert_small_chunk(M, P, S) {\ |
bindex_t I = small_index(S);\ |
mchunkptr B = smallbin_at(M, I);\ |
mchunkptr F = B;\ |
assert(S >= MIN_CHUNK_SIZE);\ |
if (!smallmap_is_marked(M, I))\ |
mark_smallmap(M, I);\ |
else if (RTCHECK(ok_address(M, B->fd)))\ |
F = B->fd;\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
B->fd = P;\ |
F->bk = P;\ |
P->fd = F;\ |
P->bk = B;\ |
} |
/* Unlink a chunk from a smallbin */ |
#define unlink_small_chunk(M, P, S) {\ |
mchunkptr F = P->fd;\ |
mchunkptr B = P->bk;\ |
bindex_t I = small_index(S);\ |
assert(P != B);\ |
assert(P != F);\ |
assert(chunksize(P) == small_index2size(I));\ |
if (F == B)\ |
clear_smallmap(M, I);\ |
else if (RTCHECK((F == smallbin_at(M,I) || ok_address(M, F)) &&\ |
(B == smallbin_at(M,I) || ok_address(M, B)))) {\ |
F->bk = B;\ |
B->fd = F;\ |
}\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
} |
/* Unlink the first chunk from a smallbin */ |
#define unlink_first_small_chunk(M, B, P, I) {\ |
mchunkptr F = P->fd;\ |
assert(P != B);\ |
assert(P != F);\ |
assert(chunksize(P) == small_index2size(I));\ |
if (B == F)\ |
clear_smallmap(M, I);\ |
else if (RTCHECK(ok_address(M, F))) {\ |
B->fd = F;\ |
F->bk = B;\ |
}\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
} |
/* Replace dv node, binning the old one */ |
/* Used only when dvsize known to be small */ |
#define replace_dv(M, P, S) {\ |
size_t DVS = M->dvsize;\ |
if (DVS != 0) {\ |
mchunkptr DV = M->dv;\ |
assert(is_small(DVS));\ |
insert_small_chunk(M, DV, DVS);\ |
}\ |
M->dvsize = S;\ |
M->dv = P;\ |
} |
/* ------------------------- Operations on trees ------------------------- */ |
/* Insert chunk into tree */ |
#define insert_large_chunk(M, X, S) {\ |
tbinptr* H;\ |
bindex_t I;\ |
compute_tree_index(S, I);\ |
H = treebin_at(M, I);\ |
X->index = I;\ |
X->child[0] = X->child[1] = 0;\ |
if (!treemap_is_marked(M, I)) {\ |
mark_treemap(M, I);\ |
*H = X;\ |
X->parent = (tchunkptr)H;\ |
X->fd = X->bk = X;\ |
}\ |
else {\ |
tchunkptr T = *H;\ |
size_t K = S << leftshift_for_tree_index(I);\ |
for (;;) {\ |
if (chunksize(T) != S) {\ |
tchunkptr* C = &(T->child[(K >> (SIZE_T_BITSIZE-SIZE_T_ONE)) & 1]);\ |
K <<= 1;\ |
if (*C != 0)\ |
T = *C;\ |
else if (RTCHECK(ok_address(M, C))) {\ |
*C = X;\ |
X->parent = T;\ |
X->fd = X->bk = X;\ |
break;\ |
}\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
break;\ |
}\ |
}\ |
else {\ |
tchunkptr F = T->fd;\ |
if (RTCHECK(ok_address(M, T) && ok_address(M, F))) {\ |
T->fd = F->bk = X;\ |
X->fd = F;\ |
X->bk = T;\ |
X->parent = 0;\ |
break;\ |
}\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
break;\ |
}\ |
}\ |
}\ |
}\ |
} |
/* |
Unlink steps: |
1. If x is a chained node, unlink it from its same-sized fd/bk links |
and choose its bk node as its replacement. |
2. If x was the last node of its size, but not a leaf node, it must |
be replaced with a leaf node (not merely one with an open left or |
right), to make sure that lefts and rights of descendents |
correspond properly to bit masks. We use the rightmost descendent |
of x. We could use any other leaf, but this is easy to locate and |
tends to counteract removal of leftmosts elsewhere, and so keeps |
paths shorter than minimally guaranteed. This doesn't loop much |
because on average a node in a tree is near the bottom. |
3. If x is the base of a chain (i.e., has parent links) relink |
x's parent and children to x's replacement (or null if none). |
*/ |
#define unlink_large_chunk(M, X) {\ |
tchunkptr XP = X->parent;\ |
tchunkptr R;\ |
if (X->bk != X) {\ |
tchunkptr F = X->fd;\ |
R = X->bk;\ |
if (RTCHECK(ok_address(M, F))) {\ |
F->bk = R;\ |
R->fd = F;\ |
}\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
}\ |
else {\ |
tchunkptr* RP;\ |
if (((R = *(RP = &(X->child[1]))) != 0) ||\ |
((R = *(RP = &(X->child[0]))) != 0)) {\ |
tchunkptr* CP;\ |
while ((*(CP = &(R->child[1])) != 0) ||\ |
(*(CP = &(R->child[0])) != 0)) {\ |
R = *(RP = CP);\ |
}\ |
if (RTCHECK(ok_address(M, RP)))\ |
*RP = 0;\ |
else {\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
}\ |
}\ |
if (XP != 0) {\ |
tbinptr* H = treebin_at(M, X->index);\ |
if (X == *H) {\ |
if ((*H = R) == 0) \ |
clear_treemap(M, X->index);\ |
}\ |
else if (RTCHECK(ok_address(M, XP))) {\ |
if (XP->child[0] == X) \ |
XP->child[0] = R;\ |
else \ |
XP->child[1] = R;\ |
}\ |
else\ |
CORRUPTION_ERROR_ACTION(M);\ |
if (R != 0) {\ |
if (RTCHECK(ok_address(M, R))) {\ |
tchunkptr C0, C1;\ |
R->parent = XP;\ |
if ((C0 = X->child[0]) != 0) {\ |
if (RTCHECK(ok_address(M, C0))) {\ |
R->child[0] = C0;\ |
C0->parent = R;\ |
}\ |
else\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
if ((C1 = X->child[1]) != 0) {\ |
if (RTCHECK(ok_address(M, C1))) {\ |
R->child[1] = C1;\ |
C1->parent = R;\ |
}\ |
else\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
}\ |
else\ |
CORRUPTION_ERROR_ACTION(M);\ |
}\ |
}\ |
} |
/* Relays to large vs small bin operations */ |
#define insert_chunk(M, P, S)\ |
if (is_small(S)) insert_small_chunk(M, P, S)\ |
else { tchunkptr TP = (tchunkptr)(P); insert_large_chunk(M, TP, S); } |
#define unlink_chunk(M, P, S)\ |
if (is_small(S)) unlink_small_chunk(M, P, S)\ |
else { tchunkptr TP = (tchunkptr)(P); unlink_large_chunk(M, TP); } |
/* Relays to internal calls to malloc/free from realloc, memalign etc */ |
#if ONLY_MSPACES |
#define internal_malloc(m, b) mspace_malloc(m, b) |
#define internal_free(m, mem) mspace_free(m,mem); |
#else /* ONLY_MSPACES */ |
#if MSPACES |
#define internal_malloc(m, b)\ |
(m == gm)? dlmalloc(b) : mspace_malloc(m, b) |
#define internal_free(m, mem)\ |
if (m == gm) dlfree(mem); else mspace_free(m,mem); |
#else /* MSPACES */ |
#define internal_malloc(m, b) dlmalloc(b) |
#define internal_free(m, mem) dlfree(mem) |
#endif /* MSPACES */ |
#endif /* ONLY_MSPACES */ |
/* ----------------------- Direct-mmapping chunks ----------------------- */ |
/* |
Directly mmapped chunks are set up with an offset to the start of |
the mmapped region stored in the prev_foot field of the chunk. This |
allows reconstruction of the required argument to MUNMAP when freed, |
and also allows adjustment of the returned chunk to meet alignment |
requirements (especially in memalign). There is also enough space |
allocated to hold a fake next chunk of size SIZE_T_SIZE to maintain |
the PINUSE bit so frees can be checked. |
*/ |
/* Malloc using mmap */ |
static void* mmap_alloc(mstate m, size_t nb) { |
size_t mmsize = granularity_align(nb + SIX_SIZE_T_SIZES + CHUNK_ALIGN_MASK); |
if (mmsize > nb) { /* Check for wrap around 0 */ |
char* mm = (char*)(DIRECT_MMAP(mmsize)); |
if (mm != CMFAIL) { |
size_t offset = align_offset(chunk2mem(mm)); |
size_t psize = mmsize - offset - MMAP_FOOT_PAD; |
mchunkptr p = (mchunkptr)(mm + offset); |
p->prev_foot = offset | IS_MMAPPED_BIT; |
(p)->head = (psize|CINUSE_BIT); |
mark_inuse_foot(m, p, psize); |
chunk_plus_offset(p, psize)->head = FENCEPOST_HEAD; |
chunk_plus_offset(p, psize+SIZE_T_SIZE)->head = 0; |
if (mm < m->least_addr) |
m->least_addr = mm; |
if ((m->footprint += mmsize) > m->max_footprint) |
m->max_footprint = m->footprint; |
assert(is_aligned(chunk2mem(p))); |
check_mmapped_chunk(m, p); |
return chunk2mem(p); |
} |
} |
return 0; |
} |
/* Realloc using mmap */ |
static mchunkptr mmap_resize(mstate m, mchunkptr oldp, size_t nb) { |
size_t oldsize = chunksize(oldp); |
if (is_small(nb)) /* Can't shrink mmap regions below small size */ |
return 0; |
/* Keep old chunk if big enough but not too big */ |
if (oldsize >= nb + SIZE_T_SIZE && |
(oldsize - nb) <= (mparams.granularity << 1)) |
return oldp; |
else { |
size_t offset = oldp->prev_foot & ~IS_MMAPPED_BIT; |
size_t oldmmsize = oldsize + offset + MMAP_FOOT_PAD; |
size_t newmmsize = granularity_align(nb + SIX_SIZE_T_SIZES + |
CHUNK_ALIGN_MASK); |
char* cp = (char*)CALL_MREMAP((char*)oldp - offset, |
oldmmsize, newmmsize, 1); |
if (cp != CMFAIL) { |
mchunkptr newp = (mchunkptr)(cp + offset); |
size_t psize = newmmsize - offset - MMAP_FOOT_PAD; |
newp->head = (psize|CINUSE_BIT); |
mark_inuse_foot(m, newp, psize); |
chunk_plus_offset(newp, psize)->head = FENCEPOST_HEAD; |
chunk_plus_offset(newp, psize+SIZE_T_SIZE)->head = 0; |
if (cp < m->least_addr) |
m->least_addr = cp; |
if ((m->footprint += newmmsize - oldmmsize) > m->max_footprint) |
m->max_footprint = m->footprint; |
check_mmapped_chunk(m, newp); |
return newp; |
} |
} |
return 0; |
} |
/* -------------------------- mspace management -------------------------- */ |
/* Initialize top chunk and its size */ |
static void init_top(mstate m, mchunkptr p, size_t psize) { |
/* Ensure alignment */ |
size_t offset = align_offset(chunk2mem(p)); |
p = (mchunkptr)((char*)p + offset); |
psize -= offset; |
m->top = p; |
m->topsize = psize; |
p->head = psize | PINUSE_BIT; |
/* set size of fake trailing chunk holding overhead space only once */ |
chunk_plus_offset(p, psize)->head = TOP_FOOT_SIZE; |
m->trim_check = mparams.trim_threshold; /* reset on each update */ |
} |
/* Initialize bins for a new mstate that is otherwise zeroed out */ |
static void init_bins(mstate m) { |
/* Establish circular links for smallbins */ |
bindex_t i; |
for (i = 0; i < NSMALLBINS; ++i) { |
sbinptr bin = smallbin_at(m,i); |
bin->fd = bin->bk = bin; |
} |
} |
#if PROCEED_ON_ERROR |
/* default corruption action */ |
static void reset_on_error(mstate m) { |
int i; |
++malloc_corruption_error_count; |
/* Reinitialize fields to forget about all memory */ |
m->smallbins = m->treebins = 0; |
m->dvsize = m->topsize = 0; |
m->seg.base = 0; |
m->seg.size = 0; |
m->seg.next = 0; |
m->top = m->dv = 0; |
for (i = 0; i < NTREEBINS; ++i) |
*treebin_at(m, i) = 0; |
init_bins(m); |
} |
#endif /* PROCEED_ON_ERROR */ |
/* Allocate chunk and prepend remainder with chunk in successor base. */ |
static void* prepend_alloc(mstate m, char* newbase, char* oldbase, |
size_t nb) { |
mchunkptr p = align_as_chunk(newbase); |
mchunkptr oldfirst = align_as_chunk(oldbase); |
size_t psize = (char*)oldfirst - (char*)p; |
mchunkptr q = chunk_plus_offset(p, nb); |
size_t qsize = psize - nb; |
set_size_and_pinuse_of_inuse_chunk(m, p, nb); |
assert((char*)oldfirst > (char*)q); |
assert(pinuse(oldfirst)); |
assert(qsize >= MIN_CHUNK_SIZE); |
/* consolidate remainder with first chunk of old base */ |
if (oldfirst == m->top) { |
size_t tsize = m->topsize += qsize; |
m->top = q; |
q->head = tsize | PINUSE_BIT; |
check_top_chunk(m, q); |
} |
else if (oldfirst == m->dv) { |
size_t dsize = m->dvsize += qsize; |
m->dv = q; |
set_size_and_pinuse_of_free_chunk(q, dsize); |
} |
else { |
if (!cinuse(oldfirst)) { |
size_t nsize = chunksize(oldfirst); |
unlink_chunk(m, oldfirst, nsize); |
oldfirst = chunk_plus_offset(oldfirst, nsize); |
qsize += nsize; |
} |
set_free_with_pinuse(q, qsize, oldfirst); |
insert_chunk(m, q, qsize); |
check_free_chunk(m, q); |
} |
check_malloced_chunk(m, chunk2mem(p), nb); |
return chunk2mem(p); |
} |
/* Add a segment to hold a new noncontiguous region */ |
static void add_segment(mstate m, char* tbase, size_t tsize, flag_t mmapped) { |
/* Determine locations and sizes of segment, fenceposts, old top */ |
char* old_top = (char*)m->top; |
msegmentptr oldsp = segment_holding(m, old_top); |
char* old_end = oldsp->base + oldsp->size; |
size_t ssize = pad_request(sizeof(struct malloc_segment)); |
char* rawsp = old_end - (ssize + FOUR_SIZE_T_SIZES + CHUNK_ALIGN_MASK); |
size_t offset = align_offset(chunk2mem(rawsp)); |
char* asp = rawsp + offset; |
char* csp = (asp < (old_top + MIN_CHUNK_SIZE))? old_top : asp; |
mchunkptr sp = (mchunkptr)csp; |
msegmentptr ss = (msegmentptr)(chunk2mem(sp)); |
mchunkptr tnext = chunk_plus_offset(sp, ssize); |
mchunkptr p = tnext; |
int nfences = 0; |
/* reset top to new space */ |
init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE); |
/* Set up segment record */ |
assert(is_aligned(ss)); |
set_size_and_pinuse_of_inuse_chunk(m, sp, ssize); |
*ss = m->seg; /* Push current record */ |
m->seg.base = tbase; |
m->seg.size = tsize; |
m->seg.sflags = mmapped; |
m->seg.next = ss; |
/* Insert trailing fenceposts */ |
for (;;) { |
mchunkptr nextp = chunk_plus_offset(p, SIZE_T_SIZE); |
p->head = FENCEPOST_HEAD; |
++nfences; |
if ((char*)(&(nextp->head)) < old_end) |
p = nextp; |
else |
break; |
} |
assert(nfences >= 2); |
/* Insert the rest of old top into a bin as an ordinary free chunk */ |
if (csp != old_top) { |
mchunkptr q = (mchunkptr)old_top; |
size_t psize = csp - old_top; |
mchunkptr tn = chunk_plus_offset(q, psize); |
set_free_with_pinuse(q, psize, tn); |
insert_chunk(m, q, psize); |
} |
check_top_chunk(m, m->top); |
} |
/* -------------------------- System allocation -------------------------- */ |
/* Get memory from system using MORECORE or MMAP */ |
static void* sys_alloc(mstate m, size_t nb) { |
char* tbase = CMFAIL; |
size_t tsize = 0; |
flag_t mmap_flag = 0; |
init_mparams(); |
/* Directly map large chunks */ |
if (use_mmap(m) && nb >= mparams.mmap_threshold) { |
void* mem = mmap_alloc(m, nb); |
if (mem != 0) |
return mem; |
} |
/* |
Try getting memory in any of three ways (in most-preferred to |
least-preferred order): |
1. A call to MORECORE that can normally contiguously extend memory. |
(disabled if not MORECORE_CONTIGUOUS or not HAVE_MORECORE or |
or main space is mmapped or a previous contiguous call failed) |
2. A call to MMAP new space (disabled if not HAVE_MMAP). |
Note that under the default settings, if MORECORE is unable to |
fulfill a request, and HAVE_MMAP is true, then mmap is |
used as a noncontiguous system allocator. This is a useful backup |
strategy for systems with holes in address spaces -- in this case |
sbrk cannot contiguously expand the heap, but mmap may be able to |
find space. |
3. A call to MORECORE that cannot usually contiguously extend memory. |
(disabled if not HAVE_MORECORE) |
*/ |
if (MORECORE_CONTIGUOUS && !use_noncontiguous(m)) { |
char* br = CMFAIL; |
msegmentptr ss = (m->top == 0)? 0 : segment_holding(m, (char*)m->top); |
size_t asize = 0; |
ACQUIRE_MORECORE_LOCK(); |
if (ss == 0) { /* First time through or recovery */ |
char* base = (char*)CALL_MORECORE(0); |
if (base != CMFAIL) { |
asize = granularity_align(nb + TOP_FOOT_SIZE + SIZE_T_ONE); |
/* Adjust to end on a page boundary */ |
if (!is_page_aligned(base)) |
asize += (page_align((size_t)base) - (size_t)base); |
/* Can't call MORECORE if size is negative when treated as signed */ |
if (asize < HALF_MAX_SIZE_T && |
(br = (char*)(CALL_MORECORE(asize))) == base) { |
tbase = base; |
tsize = asize; |
} |
} |
} |
else { |
/* Subtract out existing available top space from MORECORE request. */ |
asize = granularity_align(nb - m->topsize + TOP_FOOT_SIZE + SIZE_T_ONE); |
/* Use mem here only if it did continuously extend old space */ |
if (asize < HALF_MAX_SIZE_T && |
(br = (char*)(CALL_MORECORE(asize))) == ss->base+ss->size) { |
tbase = br; |
tsize = asize; |
} |
} |
if (tbase == CMFAIL) { /* Cope with partial failure */ |
if (br != CMFAIL) { /* Try to use/extend the space we did get */ |
if (asize < HALF_MAX_SIZE_T && |
asize < nb + TOP_FOOT_SIZE + SIZE_T_ONE) { |
size_t esize = granularity_align(nb + TOP_FOOT_SIZE + SIZE_T_ONE - asize); |
if (esize < HALF_MAX_SIZE_T) { |
char* end = (char*)CALL_MORECORE(esize); |
if (end != CMFAIL) |
asize += esize; |
else { /* Can't use; try to release */ |
CALL_MORECORE(-asize); |
br = CMFAIL; |
} |
} |
} |
} |
if (br != CMFAIL) { /* Use the space we did get */ |
tbase = br; |
tsize = asize; |
} |
else |
disable_contiguous(m); /* Don't try contiguous path in the future */ |
} |
RELEASE_MORECORE_LOCK(); |
} |
if (HAVE_MMAP && tbase == CMFAIL) { /* Try MMAP */ |
size_t req = nb + TOP_FOOT_SIZE + SIZE_T_ONE; |
size_t rsize = granularity_align(req); |
if (rsize > nb) { /* Fail if wraps around zero */ |
char* mp = (char*)(CALL_MMAP(rsize)); |
if (mp != CMFAIL) { |
tbase = mp; |
tsize = rsize; |
mmap_flag = IS_MMAPPED_BIT; |
} |
} |
} |
if (HAVE_MORECORE && tbase == CMFAIL) { /* Try noncontiguous MORECORE */ |
size_t asize = granularity_align(nb + TOP_FOOT_SIZE + SIZE_T_ONE); |
if (asize < HALF_MAX_SIZE_T) { |
char* br = CMFAIL; |
char* end = CMFAIL; |
ACQUIRE_MORECORE_LOCK(); |
br = (char*)(CALL_MORECORE(asize)); |
end = (char*)(CALL_MORECORE(0)); |
RELEASE_MORECORE_LOCK(); |
if (br != CMFAIL && end != CMFAIL && br < end) { |
size_t ssize = end - br; |
if (ssize > nb + TOP_FOOT_SIZE) { |
tbase = br; |
tsize = ssize; |
} |
} |
} |
} |
if (tbase != CMFAIL) { |
if ((m->footprint += tsize) > m->max_footprint) |
m->max_footprint = m->footprint; |
if (!is_initialized(m)) { /* first-time initialization */ |
m->seg.base = m->least_addr = tbase; |
m->seg.size = tsize; |
m->seg.sflags = mmap_flag; |
m->magic = mparams.magic; |
init_bins(m); |
if (is_global(m)) |
init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE); |
else { |
/* Offset top by embedded malloc_state */ |
mchunkptr mn = next_chunk(mem2chunk(m)); |
init_top(m, mn, (size_t)((tbase + tsize) - (char*)mn) -TOP_FOOT_SIZE); |
} |
} |
else { |
/* Try to merge with an existing segment */ |
msegmentptr sp = &m->seg; |
while (sp != 0 && tbase != sp->base + sp->size) |
sp = sp->next; |
if (sp != 0 && |
!is_extern_segment(sp) && |
(sp->sflags & IS_MMAPPED_BIT) == mmap_flag && |
segment_holds(sp, m->top)) { /* append */ |
sp->size += tsize; |
init_top(m, m->top, m->topsize + tsize); |
} |
else { |
if (tbase < m->least_addr) |
m->least_addr = tbase; |
sp = &m->seg; |
while (sp != 0 && sp->base != tbase + tsize) |
sp = sp->next; |
if (sp != 0 && |
!is_extern_segment(sp) && |
(sp->sflags & IS_MMAPPED_BIT) == mmap_flag) { |
char* oldbase = sp->base; |
sp->base = tbase; |
sp->size += tsize; |
return prepend_alloc(m, tbase, oldbase, nb); |
} |
else |
add_segment(m, tbase, tsize, mmap_flag); |
} |
} |
if (nb < m->topsize) { /* Allocate from new or extended top space */ |
size_t rsize = m->topsize -= nb; |
mchunkptr p = m->top; |
mchunkptr r = m->top = chunk_plus_offset(p, nb); |
r->head = rsize | PINUSE_BIT; |
set_size_and_pinuse_of_inuse_chunk(m, p, nb); |
check_top_chunk(m, m->top); |
check_malloced_chunk(m, chunk2mem(p), nb); |
return chunk2mem(p); |
} |
} |
MALLOC_FAILURE_ACTION; |
return 0; |
} |
/* ----------------------- system deallocation -------------------------- */ |
/* Unmap and unlink any mmapped segments that don't contain used chunks */ |
static size_t release_unused_segments(mstate m) { |
size_t released = 0; |
msegmentptr pred = &m->seg; |
msegmentptr sp = pred->next; |
while (sp != 0) { |
char* base = sp->base; |
size_t size = sp->size; |
msegmentptr next = sp->next; |
if (is_mmapped_segment(sp) && !is_extern_segment(sp)) { |
mchunkptr p = align_as_chunk(base); |
size_t psize = chunksize(p); |
/* Can unmap if first chunk holds entire segment and not pinned */ |
if (!cinuse(p) && (char*)p + psize >= base + size - TOP_FOOT_SIZE) { |
tchunkptr tp = (tchunkptr)p; |
assert(segment_holds(sp, (char*)sp)); |
if (p == m->dv) { |
m->dv = 0; |
m->dvsize = 0; |
} |
else { |
unlink_large_chunk(m, tp); |
} |
if (CALL_MUNMAP(base, size) == 0) { |
released += size; |
m->footprint -= size; |
/* unlink obsoleted record */ |
sp = pred; |
sp->next = next; |
} |
else { /* back out if cannot unmap */ |
insert_large_chunk(m, tp, psize); |
} |
} |
} |
pred = sp; |
sp = next; |
} |
return released; |
} |
static int sys_trim(mstate m, size_t pad) { |
size_t released = 0; |
if (pad < MAX_REQUEST && is_initialized(m)) { |
pad += TOP_FOOT_SIZE; /* ensure enough room for segment overhead */ |
if (m->topsize > pad) { |
/* Shrink top space in granularity-size units, keeping at least one */ |
size_t unit = mparams.granularity; |
size_t extra = ((m->topsize - pad + (unit - SIZE_T_ONE)) / unit - |
SIZE_T_ONE) * unit; |
msegmentptr sp = segment_holding(m, (char*)m->top); |
if (!is_extern_segment(sp)) { |
if (is_mmapped_segment(sp)) { |
if (HAVE_MMAP && |
sp->size >= extra && |
!has_segment_link(m, sp)) { /* can't shrink if pinned */ |
size_t newsize = sp->size - extra; |
/* Prefer mremap, fall back to munmap */ |
if ((CALL_MREMAP(sp->base, sp->size, newsize, 0) != MFAIL) || |
(CALL_MUNMAP(sp->base + newsize, extra) == 0)) { |
released = extra; |
} |
} |
} |
else if (HAVE_MORECORE) { |
if (extra >= HALF_MAX_SIZE_T) /* Avoid wrapping negative */ |
extra = (HALF_MAX_SIZE_T) + SIZE_T_ONE - unit; |
ACQUIRE_MORECORE_LOCK(); |
{ |
/* Make sure end of memory is where we last set it. */ |
char* old_br = (char*)(CALL_MORECORE(0)); |
if (old_br == sp->base + sp->size) { |
char* rel_br = (char*)(CALL_MORECORE(-extra)); |
char* new_br = (char*)(CALL_MORECORE(0)); |
if (rel_br != CMFAIL && new_br < old_br) |
released = old_br - new_br; |
} |
} |
RELEASE_MORECORE_LOCK(); |
} |
} |
if (released != 0) { |
sp->size -= released; |
m->footprint -= released; |
init_top(m, m->top, m->topsize - released); |
check_top_chunk(m, m->top); |
} |
} |
/* Unmap any unused mmapped segments */ |
if (HAVE_MMAP) |
released += release_unused_segments(m); |
/* On failure, disable autotrim to avoid repeated failed future calls */ |
if (released == 0) |
m->trim_check = MAX_SIZE_T; |
} |
return (released != 0)? 1 : 0; |
} |
/* ---------------------------- malloc support --------------------------- */ |
/* allocate a large request from the best fitting chunk in a treebin */ |
static void* tmalloc_large(mstate m, size_t nb) { |
tchunkptr v = 0; |
size_t rsize = -nb; /* Unsigned negation */ |
tchunkptr t; |
bindex_t idx; |
compute_tree_index(nb, idx); |
if ((t = *treebin_at(m, idx)) != 0) { |
/* Traverse tree for this bin looking for node with size == nb */ |
size_t sizebits = nb << leftshift_for_tree_index(idx); |
tchunkptr rst = 0; /* The deepest untaken right subtree */ |
for (;;) { |
tchunkptr rt; |
size_t trem = chunksize(t) - nb; |
if (trem < rsize) { |
v = t; |
if ((rsize = trem) == 0) |
break; |
} |
rt = t->child[1]; |
t = t->child[(sizebits >> (SIZE_T_BITSIZE-SIZE_T_ONE)) & 1]; |
if (rt != 0 && rt != t) |
rst = rt; |
if (t == 0) { |
t = rst; /* set t to least subtree holding sizes > nb */ |
break; |
} |
sizebits <<= 1; |
} |
} |
if (t == 0 && v == 0) { /* set t to root of next non-empty treebin */ |
binmap_t leftbits = left_bits(idx2bit(idx)) & m->treemap; |
if (leftbits != 0) { |
bindex_t i; |
binmap_t leastbit = least_bit(leftbits); |
compute_bit2idx(leastbit, i); |
t = *treebin_at(m, i); |
} |
} |
while (t != 0) { /* find smallest of tree or subtree */ |
size_t trem = chunksize(t) - nb; |
if (trem < rsize) { |
rsize = trem; |
v = t; |
} |
t = leftmost_child(t); |
} |
/* If dv is a better fit, return 0 so malloc will use it */ |
if (v != 0 && rsize < (size_t)(m->dvsize - nb)) { |
if (RTCHECK(ok_address(m, v))) { /* split */ |
mchunkptr r = chunk_plus_offset(v, nb); |
assert(chunksize(v) == rsize + nb); |
if (RTCHECK(ok_next(v, r))) { |
unlink_large_chunk(m, v); |
if (rsize < MIN_CHUNK_SIZE) |
set_inuse_and_pinuse(m, v, (rsize + nb)); |
else { |
set_size_and_pinuse_of_inuse_chunk(m, v, nb); |
set_size_and_pinuse_of_free_chunk(r, rsize); |
insert_chunk(m, r, rsize); |
} |
return chunk2mem(v); |
} |
} |
CORRUPTION_ERROR_ACTION(m); |
} |
return 0; |
} |
/* allocate a small request from the best fitting chunk in a treebin */ |
static void* tmalloc_small(mstate m, size_t nb) { |
tchunkptr t, v; |
size_t rsize; |
bindex_t i; |
binmap_t leastbit = least_bit(m->treemap); |
compute_bit2idx(leastbit, i); |
v = t = *treebin_at(m, i); |
rsize = chunksize(t) - nb; |
while ((t = leftmost_child(t)) != 0) { |
size_t trem = chunksize(t) - nb; |
if (trem < rsize) { |
rsize = trem; |
v = t; |
} |
} |
if (RTCHECK(ok_address(m, v))) { |
mchunkptr r = chunk_plus_offset(v, nb); |
assert(chunksize(v) == rsize + nb); |
if (RTCHECK(ok_next(v, r))) { |
unlink_large_chunk(m, v); |
if (rsize < MIN_CHUNK_SIZE) |
set_inuse_and_pinuse(m, v, (rsize + nb)); |
else { |
set_size_and_pinuse_of_inuse_chunk(m, v, nb); |
set_size_and_pinuse_of_free_chunk(r, rsize); |
replace_dv(m, r, rsize); |
} |
return chunk2mem(v); |
} |
} |
CORRUPTION_ERROR_ACTION(m); |
return 0; |
} |
/* --------------------------- realloc support --------------------------- */ |
static void* internal_realloc(mstate m, void* oldmem, size_t bytes) { |
if (bytes >= MAX_REQUEST) { |
MALLOC_FAILURE_ACTION; |
return 0; |
} |
if (!PREACTION(m)) { |
mchunkptr oldp = mem2chunk(oldmem); |
size_t oldsize = chunksize(oldp); |
mchunkptr next = chunk_plus_offset(oldp, oldsize); |
mchunkptr newp = 0; |
void* extra = 0; |
/* Try to either shrink or extend into top. Else malloc-copy-free */ |
if (RTCHECK(ok_address(m, oldp) && ok_cinuse(oldp) && |
ok_next(oldp, next) && ok_pinuse(next))) { |
size_t nb = request2size(bytes); |
if (is_mmapped(oldp)) |
newp = mmap_resize(m, oldp, nb); |
else if (oldsize >= nb) { /* already big enough */ |
size_t rsize = oldsize - nb; |
newp = oldp; |
if (rsize >= MIN_CHUNK_SIZE) { |
mchunkptr remainder = chunk_plus_offset(newp, nb); |
set_inuse(m, newp, nb); |
set_inuse(m, remainder, rsize); |
extra = chunk2mem(remainder); |
} |
} |
else if (next == m->top && oldsize + m->topsize > nb) { |
/* Expand into top */ |
size_t newsize = oldsize + m->topsize; |
size_t newtopsize = newsize - nb; |
mchunkptr newtop = chunk_plus_offset(oldp, nb); |
set_inuse(m, oldp, nb); |
newtop->head = newtopsize |PINUSE_BIT; |
m->top = newtop; |
m->topsize = newtopsize; |
newp = oldp; |
} |
} |
else { |
USAGE_ERROR_ACTION(m, oldmem); |
POSTACTION(m); |
return 0; |
} |
POSTACTION(m); |
if (newp != 0) { |
if (extra != 0) { |
internal_free(m, extra); |
} |
check_inuse_chunk(m, newp); |
return chunk2mem(newp); |
} |
else { |
void* newmem = internal_malloc(m, bytes); |
if (newmem != 0) { |
size_t oc = oldsize - overhead_for(oldp); |
memcpy(newmem, oldmem, (oc < bytes)? oc : bytes); |
internal_free(m, oldmem); |
} |
return newmem; |
} |
} |
return 0; |
} |
/* --------------------------- memalign support -------------------------- */ |
static void* internal_memalign(mstate m, size_t alignment, size_t bytes) { |
if (alignment <= MALLOC_ALIGNMENT) /* Can just use malloc */ |
return internal_malloc(m, bytes); |
if (alignment < MIN_CHUNK_SIZE) /* must be at least a minimum chunk size */ |
alignment = MIN_CHUNK_SIZE; |
if ((alignment & (alignment-SIZE_T_ONE)) != 0) {/* Ensure a power of 2 */ |
size_t a = MALLOC_ALIGNMENT << 1; |
while (a < alignment) a <<= 1; |
alignment = a; |
} |
if (bytes >= MAX_REQUEST - alignment) { |
if (m != 0) { /* Test isn't needed but avoids compiler warning */ |
MALLOC_FAILURE_ACTION; |
} |
} |
else { |
size_t nb = request2size(bytes); |
size_t req = nb + alignment + MIN_CHUNK_SIZE - CHUNK_OVERHEAD; |
char* mem = (char*)internal_malloc(m, req); |
if (mem != 0) { |
void* leader = 0; |
void* trailer = 0; |
mchunkptr p = mem2chunk(mem); |
if (PREACTION(m)) return 0; |
if ((((size_t)(mem)) % alignment) != 0) { /* misaligned */ |
/* |
Find an aligned spot inside chunk. Since we need to give |
back leading space in a chunk of at least MIN_CHUNK_SIZE, if |
the first calculation places us at a spot with less than |
MIN_CHUNK_SIZE leader, we can move to the next aligned spot. |
We've allocated enough total room so that this is always |
possible. |
*/ |
char* br = (char*)mem2chunk((size_t)(((size_t)(mem + |
alignment - |
SIZE_T_ONE)) & |
-alignment)); |
char* pos = ((size_t)(br - (char*)(p)) >= MIN_CHUNK_SIZE)? |
br : br+alignment; |
mchunkptr newp = (mchunkptr)pos; |
size_t leadsize = pos - (char*)(p); |
size_t newsize = chunksize(p) - leadsize; |
if (is_mmapped(p)) { /* For mmapped chunks, just adjust offset */ |
newp->prev_foot = p->prev_foot + leadsize; |
newp->head = (newsize|CINUSE_BIT); |
} |
else { /* Otherwise, give back leader, use the rest */ |
set_inuse(m, newp, newsize); |
set_inuse(m, p, leadsize); |
leader = chunk2mem(p); |
} |
p = newp; |
} |
/* Give back spare room at the end */ |
if (!is_mmapped(p)) { |
size_t size = chunksize(p); |
if (size > nb + MIN_CHUNK_SIZE) { |
size_t remainder_size = size - nb; |
mchunkptr remainder = chunk_plus_offset(p, nb); |
set_inuse(m, p, nb); |
set_inuse(m, remainder, remainder_size); |
trailer = chunk2mem(remainder); |
} |
} |
assert (chunksize(p) >= nb); |
assert((((size_t)(chunk2mem(p))) % alignment) == 0); |
check_inuse_chunk(m, p); |
POSTACTION(m); |
if (leader != 0) { |
internal_free(m, leader); |
} |
if (trailer != 0) { |
internal_free(m, trailer); |
} |
return chunk2mem(p); |
} |
} |
return 0; |
} |
/* ------------------------ comalloc/coalloc support --------------------- */ |
static void** ialloc(mstate m, |
size_t n_elements, |
size_t* sizes, |
int opts, |
void* chunks[]) { |
/* |
This provides common support for independent_X routines, handling |
all of the combinations that can result. |
The opts arg has: |
bit 0 set if all elements are same size (using sizes[0]) |
bit 1 set if elements should be zeroed |
*/ |
size_t element_size; /* chunksize of each element, if all same */ |
size_t contents_size; /* total size of elements */ |
size_t array_size; /* request size of pointer array */ |
void* mem; /* malloced aggregate space */ |
mchunkptr p; /* corresponding chunk */ |
size_t remainder_size; /* remaining bytes while splitting */ |
void** marray; /* either "chunks" or malloced ptr array */ |
mchunkptr array_chunk; /* chunk for malloced ptr array */ |
flag_t was_enabled; /* to disable mmap */ |
size_t size; |
size_t i; |
/* compute array length, if needed */ |
if (chunks != 0) { |
if (n_elements == 0) |
return chunks; /* nothing to do */ |
marray = chunks; |
array_size = 0; |
} |
else { |
/* if empty req, must still return chunk representing empty array */ |
if (n_elements == 0) |
return (void**)internal_malloc(m, 0); |
marray = 0; |
array_size = request2size(n_elements * (sizeof(void*))); |
} |
/* compute total element size */ |
if (opts & 0x1) { /* all-same-size */ |
element_size = request2size(*sizes); |
contents_size = n_elements * element_size; |
} |
else { /* add up all the sizes */ |
element_size = 0; |
contents_size = 0; |
for (i = 0; i != n_elements; ++i) |
contents_size += request2size(sizes[i]); |
} |
size = contents_size + array_size; |
/* |
Allocate the aggregate chunk. First disable direct-mmapping so |
malloc won't use it, since we would not be able to later |
free/realloc space internal to a segregated mmap region. |
*/ |
was_enabled = use_mmap(m); |
disable_mmap(m); |
mem = internal_malloc(m, size - CHUNK_OVERHEAD); |
if (was_enabled) |
enable_mmap(m); |
if (mem == 0) |
return 0; |
if (PREACTION(m)) return 0; |
p = mem2chunk(mem); |
remainder_size = chunksize(p); |
assert(!is_mmapped(p)); |
if (opts & 0x2) { /* optionally clear the elements */ |
memset((size_t*)mem, 0, remainder_size - SIZE_T_SIZE - array_size); |
} |
/* If not provided, allocate the pointer array as final part of chunk */ |
if (marray == 0) { |
size_t array_chunk_size; |
array_chunk = chunk_plus_offset(p, contents_size); |
array_chunk_size = remainder_size - contents_size; |
marray = (void**) (chunk2mem(array_chunk)); |
set_size_and_pinuse_of_inuse_chunk(m, array_chunk, array_chunk_size); |
remainder_size = contents_size; |
} |
/* split out elements */ |
for (i = 0; ; ++i) { |
marray[i] = chunk2mem(p); |
if (i != n_elements-1) { |
if (element_size != 0) |
size = element_size; |
else |
size = request2size(sizes[i]); |
remainder_size -= size; |
set_size_and_pinuse_of_inuse_chunk(m, p, size); |
p = chunk_plus_offset(p, size); |
} |
else { /* the final element absorbs any overallocation slop */ |
set_size_and_pinuse_of_inuse_chunk(m, p, remainder_size); |
break; |
} |
} |
#if DEBUG |
if (marray != chunks) { |
/* final element must have exactly exhausted chunk */ |
if (element_size != 0) { |
assert(remainder_size == element_size); |
} |
else { |
assert(remainder_size == request2size(sizes[i])); |
} |
check_inuse_chunk(m, mem2chunk(marray)); |
} |
for (i = 0; i != n_elements; ++i) |
check_inuse_chunk(m, mem2chunk(marray[i])); |
#endif /* DEBUG */ |
POSTACTION(m); |
return marray; |
} |
/* -------------------------- public routines ---------------------------- */ |
#if !ONLY_MSPACES |
void* dlmalloc(size_t bytes) { |
/* |
Basic algorithm: |
If a small request (< 256 bytes minus per-chunk overhead): |
1. If one exists, use a remainderless chunk in associated smallbin. |
(Remainderless means that there are too few excess bytes to |
represent as a chunk.) |
2. If it is big enough, use the dv chunk, which is normally the |
chunk adjacent to the one used for the most recent small request. |
3. If one exists, split the smallest available chunk in a bin, |
saving remainder in dv. |
4. If it is big enough, use the top chunk. |
5. If available, get memory from system and use it |
Otherwise, for a large request: |
1. Find the smallest available binned chunk that fits, and use it |
if it is better fitting than dv chunk, splitting if necessary. |
2. If better fitting than any binned chunk, use the dv chunk. |
3. If it is big enough, use the top chunk. |
4. If request size >= mmap threshold, try to directly mmap this chunk. |
5. If available, get memory from system and use it |
The ugly goto's here ensure that postaction occurs along all paths. |
*/ |
if (!PREACTION(gm)) { |
void* mem; |
size_t nb; |
if (bytes <= MAX_SMALL_REQUEST) { |
bindex_t idx; |
binmap_t smallbits; |
nb = (bytes < MIN_REQUEST)? MIN_CHUNK_SIZE : pad_request(bytes); |
idx = small_index(nb); |
smallbits = gm->smallmap >> idx; |
if ((smallbits & 0x3U) != 0) { /* Remainderless fit to a smallbin. */ |
mchunkptr b, p; |
idx += ~smallbits & 1; /* Uses next bin if idx empty */ |
b = smallbin_at(gm, idx); |
p = b->fd; |
assert(chunksize(p) == small_index2size(idx)); |
unlink_first_small_chunk(gm, b, p, idx); |
set_inuse_and_pinuse(gm, p, small_index2size(idx)); |
mem = chunk2mem(p); |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
else if (nb > gm->dvsize) { |
if (smallbits != 0) { /* Use chunk in next nonempty smallbin */ |
mchunkptr b, p, r; |
size_t rsize; |
bindex_t i; |
binmap_t leftbits = (smallbits << idx) & left_bits(idx2bit(idx)); |
binmap_t leastbit = least_bit(leftbits); |
compute_bit2idx(leastbit, i); |
b = smallbin_at(gm, i); |
p = b->fd; |
assert(chunksize(p) == small_index2size(i)); |
unlink_first_small_chunk(gm, b, p, i); |
rsize = small_index2size(i) - nb; |
/* Fit here cannot be remainderless if 4byte sizes */ |
if (SIZE_T_SIZE != 4 && rsize < MIN_CHUNK_SIZE) |
set_inuse_and_pinuse(gm, p, small_index2size(i)); |
else { |
set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
r = chunk_plus_offset(p, nb); |
set_size_and_pinuse_of_free_chunk(r, rsize); |
replace_dv(gm, r, rsize); |
} |
mem = chunk2mem(p); |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
else if (gm->treemap != 0 && (mem = tmalloc_small(gm, nb)) != 0) { |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
} |
} |
else if (bytes >= MAX_REQUEST) |
nb = MAX_SIZE_T; /* Too big to allocate. Force failure (in sys alloc) */ |
else { |
nb = pad_request(bytes); |
if (gm->treemap != 0 && (mem = tmalloc_large(gm, nb)) != 0) { |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
} |
if (nb <= gm->dvsize) { |
size_t rsize = gm->dvsize - nb; |
mchunkptr p = gm->dv; |
if (rsize >= MIN_CHUNK_SIZE) { /* split dv */ |
mchunkptr r = gm->dv = chunk_plus_offset(p, nb); |
gm->dvsize = rsize; |
set_size_and_pinuse_of_free_chunk(r, rsize); |
set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
} |
else { /* exhaust dv */ |
size_t dvs = gm->dvsize; |
gm->dvsize = 0; |
gm->dv = 0; |
set_inuse_and_pinuse(gm, p, dvs); |
} |
mem = chunk2mem(p); |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
else if (nb < gm->topsize) { /* Split top */ |
size_t rsize = gm->topsize -= nb; |
mchunkptr p = gm->top; |
mchunkptr r = gm->top = chunk_plus_offset(p, nb); |
r->head = rsize | PINUSE_BIT; |
set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
mem = chunk2mem(p); |
check_top_chunk(gm, gm->top); |
check_malloced_chunk(gm, mem, nb); |
goto postaction; |
} |
mem = sys_alloc(gm, nb); |
postaction: |
POSTACTION(gm); |
return mem; |
} |
return 0; |
} |
void dlfree(void* mem) { |
/* |
Consolidate freed chunks with preceeding or succeeding bordering |
free chunks, if they exist, and then place in a bin. Intermixed |
with special cases for top, dv, mmapped chunks, and usage errors. |
*/ |
if (mem != 0) { |
mchunkptr p = mem2chunk(mem); |
#if FOOTERS |
mstate fm = get_mstate_for(p); |
if (!ok_magic(fm)) { |
USAGE_ERROR_ACTION(fm, p); |
return; |
} |
#else /* FOOTERS */ |
#define fm gm |
#endif /* FOOTERS */ |
if (!PREACTION(fm)) { |
check_inuse_chunk(fm, p); |
if (RTCHECK(ok_address(fm, p) && ok_cinuse(p))) { |
size_t psize = chunksize(p); |
mchunkptr next = chunk_plus_offset(p, psize); |
if (!pinuse(p)) { |
size_t prevsize = p->prev_foot; |
if ((prevsize & IS_MMAPPED_BIT) != 0) { |
prevsize &= ~IS_MMAPPED_BIT; |
psize += prevsize + MMAP_FOOT_PAD; |
if (CALL_MUNMAP((char*)p - prevsize, psize) == 0) |
fm->footprint -= psize; |
goto postaction; |
} |
else { |
mchunkptr prev = chunk_minus_offset(p, prevsize); |
psize += prevsize; |
p = prev; |
if (RTCHECK(ok_address(fm, prev))) { /* consolidate backward */ |
if (p != fm->dv) { |
unlink_chunk(fm, p, prevsize); |
} |
else if ((next->head & INUSE_BITS) == INUSE_BITS) { |
fm->dvsize = psize; |
set_free_with_pinuse(p, psize, next); |
goto postaction; |
} |
} |
else |
goto erroraction; |
} |
} |
if (RTCHECK(ok_next(p, next) && ok_pinuse(next))) { |
if (!cinuse(next)) { /* consolidate forward */ |
if (next == fm->top) { |
size_t tsize = fm->topsize += psize; |
fm->top = p; |
p->head = tsize | PINUSE_BIT; |
if (p == fm->dv) { |
fm->dv = 0; |
fm->dvsize = 0; |
} |
if (should_trim(fm, tsize)) |
sys_trim(fm, 0); |
goto postaction; |
} |
else if (next == fm->dv) { |
size_t dsize = fm->dvsize += psize; |
fm->dv = p; |
set_size_and_pinuse_of_free_chunk(p, dsize); |
goto postaction; |
} |
else { |
size_t nsize = chunksize(next); |
psize += nsize; |
unlink_chunk(fm, next, nsize); |
set_size_and_pinuse_of_free_chunk(p, psize); |
if (p == fm->dv) { |
fm->dvsize = psize; |
goto postaction; |
} |
} |
} |
else |
set_free_with_pinuse(p, psize, next); |
insert_chunk(fm, p, psize); |
check_free_chunk(fm, p); |
goto postaction; |
} |
} |
erroraction: |
USAGE_ERROR_ACTION(fm, p); |
postaction: |
POSTACTION(fm); |
} |
} |
#if !FOOTERS |
#undef fm |
#endif /* FOOTERS */ |
} |
void* dlcalloc(size_t n_elements, size_t elem_size) { |
void* mem; |
size_t req = 0; |
if (n_elements != 0) { |
req = n_elements * elem_size; |
if (((n_elements | elem_size) & ~(size_t)0xffff) && |
(req / n_elements != elem_size)) |
req = MAX_SIZE_T; /* force downstream failure on overflow */ |
} |
mem = dlmalloc(req); |
if (mem != 0 && calloc_must_clear(mem2chunk(mem))) |
memset(mem, 0, req); |
return mem; |
} |
void* dlrealloc(void* oldmem, size_t bytes) { |
if (oldmem == 0) |
return dlmalloc(bytes); |
#ifdef REALLOC_ZERO_BYTES_FREES |
if (bytes == 0) { |
dlfree(oldmem); |
return 0; |
} |
#endif /* REALLOC_ZERO_BYTES_FREES */ |
else { |
#if ! FOOTERS |
mstate m = gm; |
#else /* FOOTERS */ |
mstate m = get_mstate_for(mem2chunk(oldmem)); |
if (!ok_magic(m)) { |
USAGE_ERROR_ACTION(m, oldmem); |
return 0; |
} |
#endif /* FOOTERS */ |
return internal_realloc(m, oldmem, bytes); |
} |
} |
void* dlmemalign(size_t alignment, size_t bytes) { |
return internal_memalign(gm, alignment, bytes); |
} |
void** dlindependent_calloc(size_t n_elements, size_t elem_size, |
void* chunks[]) { |
size_t sz = elem_size; /* serves as 1-element array */ |
return ialloc(gm, n_elements, &sz, 3, chunks); |
} |
void** dlindependent_comalloc(size_t n_elements, size_t sizes[], |
void* chunks[]) { |
return ialloc(gm, n_elements, sizes, 0, chunks); |
} |
void* dlvalloc(size_t bytes) { |
size_t pagesz; |
init_mparams(); |
pagesz = mparams.page_size; |
return dlmemalign(pagesz, bytes); |
} |
void* dlpvalloc(size_t bytes) { |
size_t pagesz; |
init_mparams(); |
pagesz = mparams.page_size; |
return dlmemalign(pagesz, (bytes + pagesz - SIZE_T_ONE) & ~(pagesz - SIZE_T_ONE)); |
} |
int dlmalloc_trim(size_t pad) { |
int result = 0; |
if (!PREACTION(gm)) { |
result = sys_trim(gm, pad); |
POSTACTION(gm); |
} |
return result; |
} |
size_t dlmalloc_footprint(void) { |
return gm->footprint; |
} |
size_t dlmalloc_max_footprint(void) { |
return gm->max_footprint; |
} |
#if !NO_MALLINFO |
struct mallinfo dlmallinfo(void) { |
return internal_mallinfo(gm); |
} |
#endif /* NO_MALLINFO */ |
void dlmalloc_stats() { |
internal_malloc_stats(gm); |
} |
size_t dlmalloc_usable_size(void* mem) { |
if (mem != 0) { |
mchunkptr p = mem2chunk(mem); |
if (cinuse(p)) |
return chunksize(p) - overhead_for(p); |
} |
return 0; |
} |
int dlmallopt(int param_number, int value) { |
return change_mparam(param_number, value); |
} |
#endif /* !ONLY_MSPACES */ |
/* ----------------------------- user mspaces ---------------------------- */ |
#if MSPACES |
static mstate init_user_mstate(char* tbase, size_t tsize) { |
size_t msize = pad_request(sizeof(struct malloc_state)); |
mchunkptr mn; |
mchunkptr msp = align_as_chunk(tbase); |
mstate m = (mstate)(chunk2mem(msp)); |
memset(m, 0, msize); |
INITIAL_LOCK(&m->mutex); |
msp->head = (msize|PINUSE_BIT|CINUSE_BIT); |
m->seg.base = m->least_addr = tbase; |
m->seg.size = m->footprint = m->max_footprint = tsize; |
m->magic = mparams.magic; |
m->mflags = mparams.default_mflags; |
disable_contiguous(m); |
init_bins(m); |
mn = next_chunk(mem2chunk(m)); |
init_top(m, mn, (size_t)((tbase + tsize) - (char*)mn) - TOP_FOOT_SIZE); |
check_top_chunk(m, m->top); |
return m; |
} |
mspace create_mspace(size_t capacity, int locked) { |
mstate m = 0; |
size_t msize = pad_request(sizeof(struct malloc_state)); |
init_mparams(); /* Ensure pagesize etc initialized */ |
if (capacity < (size_t) -(msize + TOP_FOOT_SIZE + mparams.page_size)) { |
size_t rs = ((capacity == 0)? mparams.granularity : |
(capacity + TOP_FOOT_SIZE + msize)); |
size_t tsize = granularity_align(rs); |
char* tbase = (char*)(CALL_MMAP(tsize)); |
if (tbase != CMFAIL) { |
m = init_user_mstate(tbase, tsize); |
m->seg.sflags = IS_MMAPPED_BIT; |
set_lock(m, locked); |
} |
} |
return (mspace)m; |
} |
mspace create_mspace_with_base(void* base, size_t capacity, int locked) { |
mstate m = 0; |
size_t msize = pad_request(sizeof(struct malloc_state)); |
init_mparams(); /* Ensure pagesize etc initialized */ |
if (capacity > msize + TOP_FOOT_SIZE && |
capacity < (size_t) -(msize + TOP_FOOT_SIZE + mparams.page_size)) { |
m = init_user_mstate((char*)base, capacity); |
m->seg.sflags = EXTERN_BIT; |
set_lock(m, locked); |
} |
return (mspace)m; |
} |
size_t destroy_mspace(mspace msp) { |
size_t freed = 0; |
mstate ms = (mstate)msp; |
if (ok_magic(ms)) { |
msegmentptr sp = &ms->seg; |
while (sp != 0) { |
char* base = sp->base; |
size_t size = sp->size; |
flag_t flag = sp->sflags; |
sp = sp->next; |
if ((flag & IS_MMAPPED_BIT) && !(flag & EXTERN_BIT) && |
CALL_MUNMAP(base, size) == 0) |
freed += size; |
} |
} |
else { |
USAGE_ERROR_ACTION(ms,ms); |
} |
return freed; |
} |
/* |
mspace versions of routines are near-clones of the global |
versions. This is not so nice but better than the alternatives. |
*/ |
void* mspace_malloc(mspace msp, size_t bytes) { |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
if (!PREACTION(ms)) { |
void* mem; |
size_t nb; |
if (bytes <= MAX_SMALL_REQUEST) { |
bindex_t idx; |
binmap_t smallbits; |
nb = (bytes < MIN_REQUEST)? MIN_CHUNK_SIZE : pad_request(bytes); |
idx = small_index(nb); |
smallbits = ms->smallmap >> idx; |
if ((smallbits & 0x3U) != 0) { /* Remainderless fit to a smallbin. */ |
mchunkptr b, p; |
idx += ~smallbits & 1; /* Uses next bin if idx empty */ |
b = smallbin_at(ms, idx); |
p = b->fd; |
assert(chunksize(p) == small_index2size(idx)); |
unlink_first_small_chunk(ms, b, p, idx); |
set_inuse_and_pinuse(ms, p, small_index2size(idx)); |
mem = chunk2mem(p); |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
else if (nb > ms->dvsize) { |
if (smallbits != 0) { /* Use chunk in next nonempty smallbin */ |
mchunkptr b, p, r; |
size_t rsize; |
bindex_t i; |
binmap_t leftbits = (smallbits << idx) & left_bits(idx2bit(idx)); |
binmap_t leastbit = least_bit(leftbits); |
compute_bit2idx(leastbit, i); |
b = smallbin_at(ms, i); |
p = b->fd; |
assert(chunksize(p) == small_index2size(i)); |
unlink_first_small_chunk(ms, b, p, i); |
rsize = small_index2size(i) - nb; |
/* Fit here cannot be remainderless if 4byte sizes */ |
if (SIZE_T_SIZE != 4 && rsize < MIN_CHUNK_SIZE) |
set_inuse_and_pinuse(ms, p, small_index2size(i)); |
else { |
set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
r = chunk_plus_offset(p, nb); |
set_size_and_pinuse_of_free_chunk(r, rsize); |
replace_dv(ms, r, rsize); |
} |
mem = chunk2mem(p); |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
else if (ms->treemap != 0 && (mem = tmalloc_small(ms, nb)) != 0) { |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
} |
} |
else if (bytes >= MAX_REQUEST) |
nb = MAX_SIZE_T; /* Too big to allocate. Force failure (in sys alloc) */ |
else { |
nb = pad_request(bytes); |
if (ms->treemap != 0 && (mem = tmalloc_large(ms, nb)) != 0) { |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
} |
if (nb <= ms->dvsize) { |
size_t rsize = ms->dvsize - nb; |
mchunkptr p = ms->dv; |
if (rsize >= MIN_CHUNK_SIZE) { /* split dv */ |
mchunkptr r = ms->dv = chunk_plus_offset(p, nb); |
ms->dvsize = rsize; |
set_size_and_pinuse_of_free_chunk(r, rsize); |
set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
} |
else { /* exhaust dv */ |
size_t dvs = ms->dvsize; |
ms->dvsize = 0; |
ms->dv = 0; |
set_inuse_and_pinuse(ms, p, dvs); |
} |
mem = chunk2mem(p); |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
else if (nb < ms->topsize) { /* Split top */ |
size_t rsize = ms->topsize -= nb; |
mchunkptr p = ms->top; |
mchunkptr r = ms->top = chunk_plus_offset(p, nb); |
r->head = rsize | PINUSE_BIT; |
set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
mem = chunk2mem(p); |
check_top_chunk(ms, ms->top); |
check_malloced_chunk(ms, mem, nb); |
goto postaction; |
} |
mem = sys_alloc(ms, nb); |
postaction: |
POSTACTION(ms); |
return mem; |
} |
return 0; |
} |
void mspace_free(mspace msp, void* mem) { |
if (mem != 0) { |
mchunkptr p = mem2chunk(mem); |
#if FOOTERS |
mstate fm = get_mstate_for(p); |
#else /* FOOTERS */ |
mstate fm = (mstate)msp; |
#endif /* FOOTERS */ |
if (!ok_magic(fm)) { |
USAGE_ERROR_ACTION(fm, p); |
return; |
} |
if (!PREACTION(fm)) { |
check_inuse_chunk(fm, p); |
if (RTCHECK(ok_address(fm, p) && ok_cinuse(p))) { |
size_t psize = chunksize(p); |
mchunkptr next = chunk_plus_offset(p, psize); |
if (!pinuse(p)) { |
size_t prevsize = p->prev_foot; |
if ((prevsize & IS_MMAPPED_BIT) != 0) { |
prevsize &= ~IS_MMAPPED_BIT; |
psize += prevsize + MMAP_FOOT_PAD; |
if (CALL_MUNMAP((char*)p - prevsize, psize) == 0) |
fm->footprint -= psize; |
goto postaction; |
} |
else { |
mchunkptr prev = chunk_minus_offset(p, prevsize); |
psize += prevsize; |
p = prev; |
if (RTCHECK(ok_address(fm, prev))) { /* consolidate backward */ |
if (p != fm->dv) { |
unlink_chunk(fm, p, prevsize); |
} |
else if ((next->head & INUSE_BITS) == INUSE_BITS) { |
fm->dvsize = psize; |
set_free_with_pinuse(p, psize, next); |
goto postaction; |
} |
} |
else |
goto erroraction; |
} |
} |
if (RTCHECK(ok_next(p, next) && ok_pinuse(next))) { |
if (!cinuse(next)) { /* consolidate forward */ |
if (next == fm->top) { |
size_t tsize = fm->topsize += psize; |
fm->top = p; |
p->head = tsize | PINUSE_BIT; |
if (p == fm->dv) { |
fm->dv = 0; |
fm->dvsize = 0; |
} |
if (should_trim(fm, tsize)) |
sys_trim(fm, 0); |
goto postaction; |
} |
else if (next == fm->dv) { |
size_t dsize = fm->dvsize += psize; |
fm->dv = p; |
set_size_and_pinuse_of_free_chunk(p, dsize); |
goto postaction; |
} |
else { |
size_t nsize = chunksize(next); |
psize += nsize; |
unlink_chunk(fm, next, nsize); |
set_size_and_pinuse_of_free_chunk(p, psize); |
if (p == fm->dv) { |
fm->dvsize = psize; |
goto postaction; |
} |
} |
} |
else |
set_free_with_pinuse(p, psize, next); |
insert_chunk(fm, p, psize); |
check_free_chunk(fm, p); |
goto postaction; |
} |
} |
erroraction: |
USAGE_ERROR_ACTION(fm, p); |
postaction: |
POSTACTION(fm); |
} |
} |
} |
void* mspace_calloc(mspace msp, size_t n_elements, size_t elem_size) { |
void* mem; |
size_t req = 0; |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
if (n_elements != 0) { |
req = n_elements * elem_size; |
if (((n_elements | elem_size) & ~(size_t)0xffff) && |
(req / n_elements != elem_size)) |
req = MAX_SIZE_T; /* force downstream failure on overflow */ |
} |
mem = internal_malloc(ms, req); |
if (mem != 0 && calloc_must_clear(mem2chunk(mem))) |
memset(mem, 0, req); |
return mem; |
} |
void* mspace_realloc(mspace msp, void* oldmem, size_t bytes) { |
if (oldmem == 0) |
return mspace_malloc(msp, bytes); |
#ifdef REALLOC_ZERO_BYTES_FREES |
if (bytes == 0) { |
mspace_free(msp, oldmem); |
return 0; |
} |
#endif /* REALLOC_ZERO_BYTES_FREES */ |
else { |
#if FOOTERS |
mchunkptr p = mem2chunk(oldmem); |
mstate ms = get_mstate_for(p); |
#else /* FOOTERS */ |
mstate ms = (mstate)msp; |
#endif /* FOOTERS */ |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
return internal_realloc(ms, oldmem, bytes); |
} |
} |
void* mspace_memalign(mspace msp, size_t alignment, size_t bytes) { |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
return internal_memalign(ms, alignment, bytes); |
} |
void** mspace_independent_calloc(mspace msp, size_t n_elements, |
size_t elem_size, void* chunks[]) { |
size_t sz = elem_size; /* serves as 1-element array */ |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
return ialloc(ms, n_elements, &sz, 3, chunks); |
} |
void** mspace_independent_comalloc(mspace msp, size_t n_elements, |
size_t sizes[], void* chunks[]) { |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
return 0; |
} |
return ialloc(ms, n_elements, sizes, 0, chunks); |
} |
int mspace_trim(mspace msp, size_t pad) { |
int result = 0; |
mstate ms = (mstate)msp; |
if (ok_magic(ms)) { |
if (!PREACTION(ms)) { |
result = sys_trim(ms, pad); |
POSTACTION(ms); |
} |
} |
else { |
USAGE_ERROR_ACTION(ms,ms); |
} |
return result; |
} |
void mspace_malloc_stats(mspace msp) { |
mstate ms = (mstate)msp; |
if (ok_magic(ms)) { |
internal_malloc_stats(ms); |
} |
else { |
USAGE_ERROR_ACTION(ms,ms); |
} |
} |
size_t mspace_footprint(mspace msp) { |
size_t result; |
mstate ms = (mstate)msp; |
if (ok_magic(ms)) { |
result = ms->footprint; |
} |
USAGE_ERROR_ACTION(ms,ms); |
return result; |
} |
size_t mspace_max_footprint(mspace msp) { |
size_t result; |
mstate ms = (mstate)msp; |
if (ok_magic(ms)) { |
result = ms->max_footprint; |
} |
USAGE_ERROR_ACTION(ms,ms); |
return result; |
} |
#if !NO_MALLINFO |
struct mallinfo mspace_mallinfo(mspace msp) { |
mstate ms = (mstate)msp; |
if (!ok_magic(ms)) { |
USAGE_ERROR_ACTION(ms,ms); |
} |
return internal_mallinfo(ms); |
} |
#endif /* NO_MALLINFO */ |
int mspace_mallopt(int param_number, int value) { |
return change_mparam(param_number, value); |
} |
#endif /* MSPACES */ |
/* -------------------- Alternative MORECORE functions ------------------- */ |
/* |
Guidelines for creating a custom version of MORECORE: |
* For best performance, MORECORE should allocate in multiples of pagesize. |
* MORECORE may allocate more memory than requested. (Or even less, |
but this will usually result in a malloc failure.) |
* MORECORE must not allocate memory when given argument zero, but |
instead return one past the end address of memory from previous |
nonzero call. |
* For best performance, consecutive calls to MORECORE with positive |
arguments should return increasing addresses, indicating that |
space has been contiguously extended. |
* Even though consecutive calls to MORECORE need not return contiguous |
addresses, it must be OK for malloc'ed chunks to span multiple |
regions in those cases where they do happen to be contiguous. |
* MORECORE need not handle negative arguments -- it may instead |
just return MFAIL when given negative arguments. |
Negative arguments are always multiples of pagesize. MORECORE |
must not misinterpret negative args as large positive unsigned |
args. You can suppress all such calls from even occurring by defining |
MORECORE_CANNOT_TRIM, |
As an example alternative MORECORE, here is a custom allocator |
kindly contributed for pre-OSX macOS. It uses virtually but not |
necessarily physically contiguous non-paged memory (locked in, |
present and won't get swapped out). You can use it by uncommenting |
this section, adding some #includes, and setting up the appropriate |
defines above: |
#define MORECORE osMoreCore |
There is also a shutdown routine that should somehow be called for |
cleanup upon program exit. |
#define MAX_POOL_ENTRIES 100 |
#define MINIMUM_MORECORE_SIZE (64 * 1024U) |
static int next_os_pool; |
void *our_os_pools[MAX_POOL_ENTRIES]; |
void *osMoreCore(int size) |
{ |
void *ptr = 0; |
static void *sbrk_top = 0; |
if (size > 0) |
{ |
if (size < MINIMUM_MORECORE_SIZE) |
size = MINIMUM_MORECORE_SIZE; |
if (CurrentExecutionLevel() == kTaskLevel) |
ptr = PoolAllocateResident(size + RM_PAGE_SIZE, 0); |
if (ptr == 0) |
{ |
return (void *) MFAIL; |
} |
// save ptrs so they can be freed during cleanup |
our_os_pools[next_os_pool] = ptr; |
next_os_pool++; |
ptr = (void *) ((((size_t) ptr) + RM_PAGE_MASK) & ~RM_PAGE_MASK); |
sbrk_top = (char *) ptr + size; |
return ptr; |
} |
else if (size < 0) |
{ |
// we don't currently support shrink behavior |
return (void *) MFAIL; |
} |
else |
{ |
return sbrk_top; |
} |
} |
// cleanup any allocated memory pools |
// called as last thing before shutting down driver |
void osCleanupMem(void) |
{ |
void **ptr; |
for (ptr = our_os_pools; ptr < &our_os_pools[MAX_POOL_ENTRIES]; ptr++) |
if (*ptr) |
{ |
PoolDeallocate(*ptr); |
*ptr = 0; |
} |
} |
*/ |
/* ----------------------------------------------------------------------- |
History: |
V2.8.3 Thu Sep 22 11:16:32 2005 Doug Lea (dl at gee) |
* Add max_footprint functions |
* Ensure all appropriate literals are size_t |
* Fix conditional compilation problem for some #define settings |
* Avoid concatenating segments with the one provided |
in create_mspace_with_base |
* Rename some variables to avoid compiler shadowing warnings |
* Use explicit lock initialization. |
* Better handling of sbrk interference. |
* Simplify and fix segment insertion, trimming and mspace_destroy |
* Reinstate REALLOC_ZERO_BYTES_FREES option from 2.7.x |
* Thanks especially to Dennis Flanagan for help on these. |
V2.8.2 Sun Jun 12 16:01:10 2005 Doug Lea (dl at gee) |
* Fix memalign brace error. |
V2.8.1 Wed Jun 8 16:11:46 2005 Doug Lea (dl at gee) |
* Fix improper #endif nesting in C++ |
* Add explicit casts needed for C++ |
V2.8.0 Mon May 30 14:09:02 2005 Doug Lea (dl at gee) |
* Use trees for large bins |
* Support mspaces |
* Use segments to unify sbrk-based and mmap-based system allocation, |
removing need for emulation on most platforms without sbrk. |
* Default safety checks |
* Optional footer checks. Thanks to William Robertson for the idea. |
* Internal code refactoring |
* Incorporate suggestions and platform-specific changes. |
Thanks to Dennis Flanagan, Colin Plumb, Niall Douglas, |
Aaron Bachmann, Emery Berger, and others. |
* Speed up non-fastbin processing enough to remove fastbins. |
* Remove useless cfree() to avoid conflicts with other apps. |
* Remove internal memcpy, memset. Compilers handle builtins better. |
* Remove some options that no one ever used and rename others. |
V2.7.2 Sat Aug 17 09:07:30 2002 Doug Lea (dl at gee) |
* Fix malloc_state bitmap array misdeclaration |
V2.7.1 Thu Jul 25 10:58:03 2002 Doug Lea (dl at gee) |
* Allow tuning of FIRST_SORTED_BIN_SIZE |
* Use PTR_UINT as type for all ptr->int casts. Thanks to John Belmonte. |
* Better detection and support for non-contiguousness of MORECORE. |
Thanks to Andreas Mueller, Conal Walsh, and Wolfram Gloger |
* Bypass most of malloc if no frees. Thanks To Emery Berger. |
* Fix freeing of old top non-contiguous chunk im sysmalloc. |
* Raised default trim and map thresholds to 256K. |
* Fix mmap-related #defines. Thanks to Lubos Lunak. |
* Fix copy macros; added LACKS_FCNTL_H. Thanks to Neal Walfield. |
* Branch-free bin calculation |
* Default trim and mmap thresholds now 256K. |
V2.7.0 Sun Mar 11 14:14:06 2001 Doug Lea (dl at gee) |
* Introduce independent_comalloc and independent_calloc. |
Thanks to Michael Pachos for motivation and help. |
* Make optional .h file available |
* Allow > 2GB requests on 32bit systems. |
* new WIN32 sbrk, mmap, munmap, lock code from <Walter@GeNeSys-e.de>. |
Thanks also to Andreas Mueller <a.mueller at paradatec.de>, |
and Anonymous. |
* Allow override of MALLOC_ALIGNMENT (Thanks to Ruud Waij for |
helping test this.) |
* memalign: check alignment arg |
* realloc: don't try to shift chunks backwards, since this |
leads to more fragmentation in some programs and doesn't |
seem to help in any others. |
* Collect all cases in malloc requiring system memory into sysmalloc |
* Use mmap as backup to sbrk |
* Place all internal state in malloc_state |
* Introduce fastbins (although similar to 2.5.1) |
* Many minor tunings and cosmetic improvements |
* Introduce USE_PUBLIC_MALLOC_WRAPPERS, USE_MALLOC_LOCK |
* Introduce MALLOC_FAILURE_ACTION, MORECORE_CONTIGUOUS |
Thanks to Tony E. Bennett <tbennett@nvidia.com> and others. |
* Include errno.h to support default failure action. |
V2.6.6 Sun Dec 5 07:42:19 1999 Doug Lea (dl at gee) |
* return null for negative arguments |
* Added Several WIN32 cleanups from Martin C. Fong <mcfong at yahoo.com> |
* Add 'LACKS_SYS_PARAM_H' for those systems without 'sys/param.h' |
(e.g. WIN32 platforms) |
* Cleanup header file inclusion for WIN32 platforms |
* Cleanup code to avoid Microsoft Visual C++ compiler complaints |
* Add 'USE_DL_PREFIX' to quickly allow co-existence with existing |
memory allocation routines |
* Set 'malloc_getpagesize' for WIN32 platforms (needs more work) |
* Use 'assert' rather than 'ASSERT' in WIN32 code to conform to |
usage of 'assert' in non-WIN32 code |
* Improve WIN32 'sbrk()' emulation's 'findRegion()' routine to |
avoid infinite loop |
* Always call 'fREe()' rather than 'free()' |
V2.6.5 Wed Jun 17 15:57:31 1998 Doug Lea (dl at gee) |
* Fixed ordering problem with boundary-stamping |
V2.6.3 Sun May 19 08:17:58 1996 Doug Lea (dl at gee) |
* Added pvalloc, as recommended by H.J. Liu |
* Added 64bit pointer support mainly from Wolfram Gloger |
* Added anonymously donated WIN32 sbrk emulation |
* Malloc, calloc, getpagesize: add optimizations from Raymond Nijssen |
* malloc_extend_top: fix mask error that caused wastage after |
foreign sbrks |
* Add linux mremap support code from HJ Liu |
V2.6.2 Tue Dec 5 06:52:55 1995 Doug Lea (dl at gee) |
* Integrated most documentation with the code. |
* Add support for mmap, with help from |
Wolfram Gloger (Gloger@lrz.uni-muenchen.de). |
* Use last_remainder in more cases. |
* Pack bins using idea from colin@nyx10.cs.du.edu |
* Use ordered bins instead of best-fit threshhold |
* Eliminate block-local decls to simplify tracing and debugging. |
* Support another case of realloc via move into top |
* Fix error occuring when initial sbrk_base not word-aligned. |
* Rely on page size for units instead of SBRK_UNIT to |
avoid surprises about sbrk alignment conventions. |
* Add mallinfo, mallopt. Thanks to Raymond Nijssen |
(raymond@es.ele.tue.nl) for the suggestion. |
* Add `pad' argument to malloc_trim and top_pad mallopt parameter. |
* More precautions for cases where other routines call sbrk, |
courtesy of Wolfram Gloger (Gloger@lrz.uni-muenchen.de). |
* Added macros etc., allowing use in linux libc from |
H.J. Lu (hjl@gnu.ai.mit.edu) |
* Inverted this history list |
V2.6.1 Sat Dec 2 14:10:57 1995 Doug Lea (dl at gee) |
* Re-tuned and fixed to behave more nicely with V2.6.0 changes. |
* Removed all preallocation code since under current scheme |
the work required to undo bad preallocations exceeds |
the work saved in good cases for most test programs. |
* No longer use return list or unconsolidated bins since |
no scheme using them consistently outperforms those that don't |
given above changes. |
* Use best fit for very large chunks to prevent some worst-cases. |
* Added some support for debugging |
V2.6.0 Sat Nov 4 07:05:23 1995 Doug Lea (dl at gee) |
* Removed footers when chunks are in use. Thanks to |
Paul Wilson (wilson@cs.texas.edu) for the suggestion. |
V2.5.4 Wed Nov 1 07:54:51 1995 Doug Lea (dl at gee) |
* Added malloc_trim, with help from Wolfram Gloger |
(wmglo@Dent.MED.Uni-Muenchen.DE). |
V2.5.3 Tue Apr 26 10:16:01 1994 Doug Lea (dl at g) |
V2.5.2 Tue Apr 5 16:20:40 1994 Doug Lea (dl at g) |
* realloc: try to expand in both directions |
* malloc: swap order of clean-bin strategy; |
* realloc: only conditionally expand backwards |
* Try not to scavenge used bins |
* Use bin counts as a guide to preallocation |
* Occasionally bin return list chunks in first scan |
* Add a few optimizations from colin@nyx10.cs.du.edu |
V2.5.1 Sat Aug 14 15:40:43 1993 Doug Lea (dl at g) |
* faster bin computation & slightly different binning |
* merged all consolidations to one part of malloc proper |
(eliminating old malloc_find_space & malloc_clean_bin) |
* Scan 2 returns chunks (not just 1) |
* Propagate failure in realloc if malloc returns 0 |
* Add stuff to allow compilation on non-ANSI compilers |
from kpv@research.att.com |
V2.5 Sat Aug 7 07:41:59 1993 Doug Lea (dl at g.oswego.edu) |
* removed potential for odd address access in prev_chunk |
* removed dependency on getpagesize.h |
* misc cosmetics and a bit more internal documentation |
* anticosmetics: mangled names in macros to evade debugger strangeness |
* tested on sparc, hp-700, dec-mips, rs6000 |
with gcc & native cc (hp, dec only) allowing |
Detlefs & Zorn comparison study (in SIGPLAN Notices.) |
Trial version Fri Aug 28 13:14:29 1992 Doug Lea (dl at g.oswego.edu) |
* Based loosely on libg++-1.2X malloc. (It retains some of the overall |
structure of old version, but most details differ.) |
*/ |
/uspace/trunk/libc/Makefile.toolchain |
---|
0,0 → 1,56 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
DEFS = -DARCH=$(ARCH) |
CFLAGS = -fno-builtin -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -nostdlib -nostdinc -I$(LIBC_PREFIX)/include -I$(LIBC_PREFIX)/arch/$(ARCH)/include |
LFLAGS = -M |
AFLAGS = |
## Setup platform configuration |
# |
include $(LIBC_PREFIX)/arch/$(ARCH)/Makefile.inc |
## Toolchain configuration |
# |
ifeq ($(COMPILER),native) |
CC = gcc |
AS = as |
LD = ld |
AR = ar |
OBJCOPY = objcopy |
OBJDUMP = objdump |
else |
CC = $(TOOLCHAIN_DIR)/$(TARGET)-gcc |
AS = $(TOOLCHAIN_DIR)/$(TARGET)-as |
LD = $(TOOLCHAIN_DIR)/$(TARGET)-ld |
AR = $(TOOLCHAIN_DIR)/$(TARGET)-ar |
OBJCOPY = $(TOOLCHAIN_DIR)/$(TARGET)-objcopy |
OBJDUMP = $(TOOLCHAIN_DIR)/$(TARGET)-objdump |
endif |
/uspace/trunk/softfloat/include/mul.h |
---|
0,0 → 1,39 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __MUL_H__ |
#define __MUL_H__ |
float32 mulFloat32(float32 a, float32 b); |
float64 mulFloat64(float64 a, float64 b); |
void mul64integers(uint64_t a,uint64_t b, uint64_t *lo, uint64_t *hi); |
#endif |
/uspace/trunk/softfloat/include/sftypes.h |
---|
0,0 → 1,102 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SFTYPES_H__ |
#define __SFTYPES_H__ |
#include <endian.h> |
#include <stdint.h> |
typedef union { |
float f; |
uint32_t binary; |
struct { |
#if __BYTE_ORDER == __BIG_ENDIAN |
uint32_t sign:1; |
uint32_t exp:8; |
uint32_t fraction:23; |
#elif __BYTE_ORDER == __LITTLE_ENDIAN |
uint32_t fraction:23; |
uint32_t exp:8; |
uint32_t sign:1; |
#else |
#error "Unknown endians." |
#endif |
} parts __attribute__ ((packed)); |
} float32; |
typedef union { |
double d; |
uint64_t binary; |
struct { |
#if __BYTE_ORDER == __BIG_ENDIAN |
uint64_t sign:1; |
uint64_t exp:11; |
uint64_t fraction:52; |
#elif __BYTE_ORDER == __LITTLE_ENDIAN |
uint64_t fraction:52; |
uint64_t exp:11; |
uint64_t sign:1; |
#else |
#error "Unknown endians." |
#endif |
} parts __attribute__ ((packed)); |
} float64; |
#define FLOAT32_MAX 0x7f800000 |
#define FLOAT32_MIN 0xff800000 |
#define FLOAT64_MAX |
#define FLOAT64_MIN |
/* For recognizing NaNs or infinity use isFloat32NaN and is Float32Inf, comparing with this constants is not sufficient */ |
#define FLOAT32_NAN 0x7FC00001 |
#define FLOAT32_SIGNAN 0x7F800001 |
#define FLOAT32_INF 0x7F800000 |
#define FLOAT64_NAN 0x7FF8000000000001ll |
#define FLOAT64_SIGNAN 0x7FF0000000000001ll |
#define FLOAT64_INF 0x7FF0000000000000ll |
#define FLOAT32_FRACTION_SIZE 23 |
#define FLOAT64_FRACTION_SIZE 52 |
#define FLOAT32_HIDDEN_BIT_MASK 0x800000 |
#define FLOAT64_HIDDEN_BIT_MASK 0x10000000000000ll |
#define FLOAT32_MAX_EXPONENT 0xFF |
#define FLOAT64_MAX_EXPONENT 0x7FF |
#define FLOAT32_BIAS 0x7F |
#define FLOAT64_BIAS 0x3FF |
#define FLOAT80_BIAS 0x3FFF |
#endif |
/uspace/trunk/softfloat/include/softfloat.h |
---|
0,0 → 1,164 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_H__ |
#define __SOFTFLOAT_H__ |
float __addsf3(float a, float b); |
double __adddf3(double a, double b); |
long double __addtf3(long double a, long double b); |
long double __addxf3(long double a, long double b); |
float __subsf3(float a, float b); |
double __subdf3(double a, double b); |
long double __subtf3(long double a, long double b); |
long double __subxf3(long double a, long double b); |
float __mulsf3(float a, float b); |
double __muldf3(double a, double b); |
long double __multf3(long double a, long double b); |
long double __mulxf3(long double a, long double b); |
float __divsf3(float a, float b); |
double __divdf3(double a, double b); |
long double __divtf3(long double a, long double b); |
long double __divxf3(long double a, long double b); |
float __negsf2(float a); |
double __negdf2(double a); |
long double __negtf2(long double a); |
long double __negxf2(long double a); |
double __extendsfdf2(float a); |
long double __extendsftf2(float a); |
long double __extendsfxf2(float a); |
long double __extenddftf2(double a); |
long double __extenddfxf2(double a); |
double __truncxfdf2(long double a); |
double __trunctfdf2(long double a); |
float __truncxfsf2(long double a); |
float __trunctfsf2(long double a); |
float __truncdfsf2(double a); |
int __fixsfsi(float a); |
int __fixdfsi(double a); |
int __fixtfsi(long double a); |
int __fixxfsi(long double a); |
long __fixsfdi(float a); |
long __fixdfdi(double a); |
long __fixtfdi(long double a); |
long __fixxfdi(long double a); |
long long __fixsfti(float a); |
long long __fixdfti(double a); |
long long __fixtfti(long double a); |
long long __fixxfti(long double a); |
unsigned int __fixunssfsi(float a); |
unsigned int __fixunsdfsi(double a); |
unsigned int __fixunstfsi(long double a); |
unsigned int __fixunsxfsi(long double a); |
unsigned long __fixunssfdi(float a); |
unsigned long __fixunsdfdi(double a); |
unsigned long __fixunstfdi(long double a); |
unsigned long __fixunsxfdi(long double a); |
unsigned long long __fixunssfti(float a); |
unsigned long long __fixunsdfti(double a); |
unsigned long long __fixunstfti(long double a); |
unsigned long long __fixunsxfti(long double a); |
float __floatsisf(int i); |
double __floatsidf(int i); |
long double __floatsitf(int i); |
long double __floatsixf(int i); |
float __floatdisf(long i); |
double __floatdidf(long i); |
long double __floatditf(long i); |
long double __floatdixf(long i); |
float __floattisf(long long i); |
double __floattidf(long long i); |
long double __floattitf(long long i); |
long double __floattixf(long long i); |
float __floatunsisf(unsigned int i); |
double __floatunsidf(unsigned int i); |
long double __floatunsitf(unsigned int i); |
long double __floatunsixf(unsigned int i); |
float __floatundisf(unsigned long i); |
double __floatundidf(unsigned long i); |
long double __floatunditf(unsigned long i); |
long double __floatundixf(unsigned long i); |
float __floatuntisf(unsigned long long i); |
double __floatuntidf(unsigned long long i); |
long double __floatuntitf(unsigned long long i); |
long double __floatuntixf(unsigned long long i); |
int __cmpsf2(float a, float b); |
int __cmpdf2(double a, double b); |
int __cmptf2(long double a, long double b); |
int __unordsf2(float a, float b); |
int __unorddf2(double a, double b); |
int __unordtf2(long double a, long double b); |
int __eqsf2(float a, float b); |
int __eqdf2(double a, double b); |
int __eqtf2(long double a, long double b); |
int __nesf2(float a, float b); |
int __nedf2(double a, double b); |
int __netf2(long double a, long double b); |
int __gesf2(float a, float b); |
int __gedf2(double a, double b); |
int __getf2(long double a, long double b); |
int __ltsf2(float a, float b); |
int __ltdf2(double a, double b); |
int __lttf2(long double a, long double b); |
int __lesf2(float a, float b); |
int __ledf2(double a, double b); |
int __letf2(long double a, long double b); |
int __gtsf2(float a, float b); |
int __gtdf2(double a, double b); |
int __gttf2(long double a, long double b); |
/* Not implemented yet*/ |
float __powisf2(float a, int b); |
#endif |
/uspace/trunk/softfloat/include/div.h |
---|
0,0 → 1,38 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __DIV_H__ |
#define __DIV_H__ |
float32 divFloat32(float32 a, float32 b); |
float64 divFloat64(float64 a, float64 b); |
uint64_t divFloat64estim(uint64_t a, uint64_t b); |
#endif |
/uspace/trunk/softfloat/include/conversion.h |
---|
0,0 → 1,61 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __CONVERSION_H__ |
#define __CONVERSION_H__ |
float64 convertFloat32ToFloat64(float32 a); |
float32 convertFloat64ToFloat32(float64 a); |
uint32_t float32_to_uint32(float32 a); |
int32_t float32_to_int32(float32 a); |
uint64_t float32_to_uint64(float32 a); |
int64_t float32_to_int64(float32 a); |
uint64_t float64_to_uint64(float64 a); |
int64_t float64_to_int64(float64 a); |
uint32_t float64_to_uint32(float64 a); |
int32_t float64_to_int32(float64 a); |
float32 uint32_to_float32(uint32_t i); |
float32 int32_to_float32(int32_t i); |
float32 uint64_to_float32(uint64_t i); |
float32 int64_to_float32(int64_t i); |
float64 uint32_to_float64(uint32_t i); |
float64 int32_to_float64(int32_t i); |
float64 uint64_to_float64(uint64_t i); |
float64 int64_to_float64(int64_t i); |
#endif |
/uspace/trunk/softfloat/include/common.h |
---|
0,0 → 1,43 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __COMMON_H__ |
#define __COMMON_H__ |
#include<sftypes.h> |
float64 finishFloat64(int32_t cexp, uint64_t cfrac, char sign); |
int countZeroes64(uint64_t i); |
int countZeroes32(uint32_t i); |
int countZeroes8(uint8_t i); |
void roundFloat32(int32_t *exp, uint32_t *fraction); |
void roundFloat64(int32_t *exp, uint64_t *fraction); |
#endif |
/uspace/trunk/softfloat/include/sub.h |
---|
0,0 → 1,37 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SUB_H__ |
#define __SUB_H__ |
float32 subFloat32(float32 a, float32 b); |
float64 subFloat64(float64 a, float64 b); |
#endif |
/uspace/trunk/softfloat/include/add.h |
---|
0,0 → 1,37 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __ADD_H__ |
#define __ADD_H__ |
float32 addFloat32(float32 a, float32 b); |
float64 addFloat64(float64 a, float64 b); |
#endif |
/uspace/trunk/softfloat/include/comparison.h |
---|
0,0 → 1,49 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __COMPARISON_H__ |
#define __COMPARISON_H__ |
inline int isFloat32NaN(float32 f); |
inline int isFloat32SigNaN(float32 f); |
inline int isFloat32Infinity(float32 f); |
inline int isFloat32Zero(float32 f); |
inline int isFloat64NaN(float64 d); |
inline int isFloat64SigNaN(float64 d); |
inline int isFloat64Infinity(float64 d); |
inline int isFloat64Zero(float64 d); |
inline int isFloat32eq(float32 a, float32 b); |
inline int isFloat32lt(float32 a, float32 b); |
inline int isFloat32gt(float32 a, float32 b); |
#endif |
/uspace/trunk/softfloat/include/other.h |
---|
0,0 → 1,33 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __OTHER_H__ |
#define __OTHER_H__ |
#endif |
/uspace/trunk/softfloat/generic/softfloat.c |
---|
0,0 → 1,484 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<softfloat.h> |
#include<sftypes.h> |
#include<add.h> |
#include<sub.h> |
#include<mul.h> |
#include<div.h> |
#include<conversion.h> |
#include<comparison.h> |
#include<other.h> |
#include<functions.h> |
/* Arithmetic functions */ |
float __addsf3(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if (fa.parts.sign != fb.parts.sign) { |
if (fa.parts.sign) { |
fa.parts.sign = 0; |
return subFloat32(fb, fa).f; |
}; |
fb.parts.sign = 0; |
return subFloat32(fa, fb).f; |
} |
return addFloat32(fa, fb).f; |
} |
double __adddf3(double a, double b) |
{ |
float64 da, db; |
da.d = a; |
db.d = b; |
if (da.parts.sign != db.parts.sign) { |
if (da.parts.sign) { |
da.parts.sign = 0; |
return subFloat64(db, da).d; |
}; |
db.parts.sign = 0; |
return subFloat64(da, db).d; |
} |
return addFloat64(da, db).d; |
} |
float __subsf3(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if (fa.parts.sign != fb.parts.sign) { |
fb.parts.sign = !fb.parts.sign; |
return addFloat32(fa, fb).f; |
} |
return subFloat32(fa, fb).f; |
} |
double __subdf3(double a, double b) |
{ |
float64 da, db; |
da.d = a; |
db.d = b; |
if (da.parts.sign != db.parts.sign) { |
db.parts.sign = !db.parts.sign; |
return addFloat64(da, db).d; |
} |
return subFloat64(da, db).d; |
} |
float __mulsf3(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
return mulFloat32(fa, fb).f; |
} |
double __muldf3(double a, double b) |
{ |
float64 da, db; |
da.d = a; |
db.d = b; |
return mulFloat64(da, db).d; |
} |
float __divsf3(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
return divFloat32(fa, fb).f; |
} |
double __divdf3(double a, double b) |
{ |
float64 da, db; |
da.d = a; |
db.d = b; |
return divFloat64(da, db).d; |
} |
float __negsf2(float a) |
{ |
float32 fa; |
fa.f = a; |
fa.parts.sign = !fa.parts.sign; |
return fa.f; |
} |
double __negdf2(double a) |
{ |
float64 fa; |
fa.d = a; |
fa.parts.sign = !fa.parts.sign; |
return fa.d; |
} |
/* Conversion functions */ |
double __extendsfdf2(float a) |
{ |
float32 fa; |
fa.f = a; |
return convertFloat32ToFloat64(fa).d; |
} |
float __truncdfsf2(double a) |
{ |
float64 da; |
da.d = a; |
return convertFloat64ToFloat32(da).f; |
} |
int __fixsfsi(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_int(fa); |
} |
int __fixdfsi(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_int(da); |
} |
long __fixsfdi(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_long(fa); |
} |
long __fixdfdi(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_long(da); |
} |
long long __fixsfti(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_longlong(fa); |
} |
long long __fixdfti(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_longlong(da); |
} |
unsigned int __fixunssfsi(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_uint(fa); |
} |
unsigned int __fixunsdfsi(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_uint(da); |
} |
unsigned long __fixunssfdi(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_ulong(fa); |
} |
unsigned long __fixunsdfdi(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_ulong(da); |
} |
unsigned long long __fixunssfti(float a) |
{ |
float32 fa; |
fa.f = a; |
return float32_to_ulonglong(fa); |
} |
unsigned long long __fixunsdfti(double a) |
{ |
float64 da; |
da.d = a; |
return float64_to_ulonglong(da); |
} |
float __floatsisf(int i) |
{ |
float32 fa; |
fa = int_to_float32(i); |
return fa.f; |
} |
double __floatsidf(int i) |
{ |
float64 da; |
da = int_to_float64(i); |
return da.d; |
} |
float __floatdisf(long i) |
{ |
float32 fa; |
fa = long_to_float32(i); |
return fa.f; |
} |
double __floatdidf(long i) |
{ |
float64 da; |
da = long_to_float64(i); |
return da.d; |
} |
float __floattisf(long long i) |
{ |
float32 fa; |
fa = longlong_to_float32(i); |
return fa.f; |
} |
double __floattidf(long long i) |
{ |
float64 da; |
da = longlong_to_float64(i); |
return da.d; |
} |
float __floatunsisf(unsigned int i) |
{ |
float32 fa; |
fa = uint_to_float32(i); |
return fa.f; |
} |
double __floatunsidf(unsigned int i) |
{ |
float64 da; |
da = uint_to_float64(i); |
return da.d; |
} |
float __floatundisf(unsigned long i) |
{ |
float32 fa; |
fa = ulong_to_float32(i); |
return fa.f; |
} |
double __floatundidf(unsigned long i) |
{ |
float64 da; |
da = ulong_to_float64(i); |
return da.d; |
} |
float __floatuntisf(unsigned long long i) |
{ |
float32 fa; |
fa = ulonglong_to_float32(i); |
return fa.f; |
} |
double __floatuntidf(unsigned long long i) |
{ |
float64 da; |
da = ulonglong_to_float64(i); |
return da.d; |
} |
/* Comparison functions */ |
/* Comparison functions */ |
/* a<b .. -1 |
* a=b .. 0 |
* a>b .. 1 |
* */ |
int __cmpsf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
return 1; /* no special constant for unordered - maybe signaled? */ |
}; |
if (isFloat32eq(fa, fb)) { |
return 0; |
}; |
if (isFloat32lt(fa, fb)) { |
return -1; |
}; |
return 1; |
} |
int __unordsf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
return ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ); |
} |
/** |
* @return zero, if neither argument is a NaN and are equal |
* */ |
int __eqsf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
/* TODO: sigNaNs*/ |
return 1; |
}; |
return isFloat32eq(fa, fb) - 1; |
} |
/* strange behavior, but it was in gcc documentation */ |
int __nesf2(float a, float b) |
{ |
return __eqsf2(a, b); |
} |
/* return value >= 0 if a>=b and neither is NaN */ |
int __gesf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
/* TODO: sigNaNs*/ |
return -1; |
}; |
if (isFloat32eq(fa, fb)) { |
return 0; |
}; |
if (isFloat32gt(fa, fb)) { |
return 1; |
}; |
return -1; |
} |
/** Return negative value, if a<b and neither is NaN*/ |
int __ltsf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
/* TODO: sigNaNs*/ |
return 1; |
}; |
if (isFloat32lt(fa, fb)) { |
return -1; |
}; |
return 0; |
} |
/* return value <= 0 if a<=b and neither is NaN */ |
int __lesf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
/* TODO: sigNaNs*/ |
return 1; |
}; |
if (isFloat32eq(fa, fb)) { |
return 0; |
}; |
if (isFloat32lt(fa, fb)) { |
return -1; |
}; |
return 1; |
} |
/** Return positive value, if a>b and neither is NaN*/ |
int __gtsf2(float a, float b) |
{ |
float32 fa, fb; |
fa.f = a; |
fb.f = b; |
if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
/* TODO: sigNaNs*/ |
return -1; |
}; |
if (isFloat32gt(fa, fb)) { |
return 1; |
}; |
return 0; |
} |
/* Other functions */ |
float __powisf2(float a, int b) |
{ |
/* TODO: */ |
} |
/uspace/trunk/softfloat/generic/div.c |
---|
0,0 → 1,356 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<add.h> |
#include<div.h> |
#include<comparison.h> |
#include<mul.h> |
#include<common.h> |
float32 divFloat32(float32 a, float32 b) |
{ |
float32 result; |
int32_t aexp, bexp, cexp; |
uint64_t afrac, bfrac, cfrac; |
result.parts.sign = a.parts.sign ^ b.parts.sign; |
if (isFloat32NaN(a)) { |
if (isFloat32SigNaN(a)) { |
/*FIXME: SigNaN*/ |
} |
/*NaN*/ |
return a; |
} |
if (isFloat32NaN(b)) { |
if (isFloat32SigNaN(b)) { |
/*FIXME: SigNaN*/ |
} |
/*NaN*/ |
return b; |
} |
if (isFloat32Infinity(a)) { |
if (isFloat32Infinity(b)) { |
/*FIXME: inf / inf */ |
result.binary = FLOAT32_NAN; |
return result; |
} |
/* inf / num */ |
result.parts.exp = a.parts.exp; |
result.parts.fraction = a.parts.fraction; |
return result; |
} |
if (isFloat32Infinity(b)) { |
if (isFloat32Zero(a)) { |
/* FIXME 0 / inf */ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
/* FIXME: num / inf*/ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
if (isFloat32Zero(b)) { |
if (isFloat32Zero(a)) { |
/*FIXME: 0 / 0*/ |
result.binary = FLOAT32_NAN; |
return result; |
} |
/* FIXME: division by zero */ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
afrac = a.parts.fraction; |
aexp = a.parts.exp; |
bfrac = b.parts.fraction; |
bexp = b.parts.exp; |
/* denormalized numbers */ |
if (aexp == 0) { |
if (afrac == 0) { |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
/* normalize it*/ |
afrac <<= 1; |
/* afrac is nonzero => it must stop */ |
while (! (afrac & FLOAT32_HIDDEN_BIT_MASK) ) { |
afrac <<= 1; |
aexp--; |
} |
} |
if (bexp == 0) { |
bfrac <<= 1; |
/* bfrac is nonzero => it must stop */ |
while (! (bfrac & FLOAT32_HIDDEN_BIT_MASK) ) { |
bfrac <<= 1; |
bexp--; |
} |
} |
afrac = (afrac | FLOAT32_HIDDEN_BIT_MASK ) << (32 - FLOAT32_FRACTION_SIZE - 1 ); |
bfrac = (bfrac | FLOAT32_HIDDEN_BIT_MASK ) << (32 - FLOAT32_FRACTION_SIZE ); |
if ( bfrac <= (afrac << 1) ) { |
afrac >>= 1; |
aexp++; |
} |
cexp = aexp - bexp + FLOAT32_BIAS - 2; |
cfrac = (afrac << 32) / bfrac; |
if (( cfrac & 0x3F ) == 0) { |
cfrac |= ( bfrac * cfrac != afrac << 32 ); |
} |
/* pack and round */ |
/* find first nonzero digit and shift result and detect possibly underflow */ |
while ((cexp > 0) && (cfrac) && (!(cfrac & (FLOAT32_HIDDEN_BIT_MASK << 7 )))) { |
cexp--; |
cfrac <<= 1; |
/* TODO: fix underflow */ |
}; |
cfrac += (0x1 << 6); /* FIXME: 7 is not sure*/ |
if (cfrac & (FLOAT32_HIDDEN_BIT_MASK << 7)) { |
++cexp; |
cfrac >>= 1; |
} |
/* check overflow */ |
if (cexp >= FLOAT32_MAX_EXPONENT ) { |
/* FIXME: overflow, return infinity */ |
result.parts.exp = FLOAT32_MAX_EXPONENT; |
result.parts.fraction = 0; |
return result; |
} |
if (cexp < 0) { |
/* FIXME: underflow */ |
result.parts.exp = 0; |
if ((cexp + FLOAT32_FRACTION_SIZE) < 0) { |
result.parts.fraction = 0; |
return result; |
} |
cfrac >>= 1; |
while (cexp < 0) { |
cexp ++; |
cfrac >>= 1; |
} |
} else { |
result.parts.exp = (uint32_t)cexp; |
} |
result.parts.fraction = ((cfrac >> 6) & (~FLOAT32_HIDDEN_BIT_MASK)); |
return result; |
} |
float64 divFloat64(float64 a, float64 b) |
{ |
float64 result; |
int64_t aexp, bexp, cexp; |
uint64_t afrac, bfrac, cfrac; |
uint64_t remlo, remhi; |
result.parts.sign = a.parts.sign ^ b.parts.sign; |
if (isFloat64NaN(a)) { |
if (isFloat64SigNaN(b)) { |
/*FIXME: SigNaN*/ |
return b; |
} |
if (isFloat64SigNaN(a)) { |
/*FIXME: SigNaN*/ |
} |
/*NaN*/ |
return a; |
} |
if (isFloat64NaN(b)) { |
if (isFloat64SigNaN(b)) { |
/*FIXME: SigNaN*/ |
} |
/*NaN*/ |
return b; |
} |
if (isFloat64Infinity(a)) { |
if (isFloat64Infinity(b) || isFloat64Zero(b)) { |
/*FIXME: inf / inf */ |
result.binary = FLOAT64_NAN; |
return result; |
} |
/* inf / num */ |
result.parts.exp = a.parts.exp; |
result.parts.fraction = a.parts.fraction; |
return result; |
} |
if (isFloat64Infinity(b)) { |
if (isFloat64Zero(a)) { |
/* FIXME 0 / inf */ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
/* FIXME: num / inf*/ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
if (isFloat64Zero(b)) { |
if (isFloat64Zero(a)) { |
/*FIXME: 0 / 0*/ |
result.binary = FLOAT64_NAN; |
return result; |
} |
/* FIXME: division by zero */ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
afrac = a.parts.fraction; |
aexp = a.parts.exp; |
bfrac = b.parts.fraction; |
bexp = b.parts.exp; |
/* denormalized numbers */ |
if (aexp == 0) { |
if (afrac == 0) { |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
} |
/* normalize it*/ |
aexp++; |
/* afrac is nonzero => it must stop */ |
while (! (afrac & FLOAT64_HIDDEN_BIT_MASK) ) { |
afrac <<= 1; |
aexp--; |
} |
} |
if (bexp == 0) { |
bexp++; |
/* bfrac is nonzero => it must stop */ |
while (! (bfrac & FLOAT64_HIDDEN_BIT_MASK) ) { |
bfrac <<= 1; |
bexp--; |
} |
} |
afrac = (afrac | FLOAT64_HIDDEN_BIT_MASK ) << (64 - FLOAT64_FRACTION_SIZE - 2 ); |
bfrac = (bfrac | FLOAT64_HIDDEN_BIT_MASK ) << (64 - FLOAT64_FRACTION_SIZE - 1); |
if ( bfrac <= (afrac << 1) ) { |
afrac >>= 1; |
aexp++; |
} |
cexp = aexp - bexp + FLOAT64_BIAS - 2; |
cfrac = divFloat64estim(afrac, bfrac); |
if (( cfrac & 0x1FF ) <= 2) { /*FIXME:?? */ |
mul64integers( bfrac, cfrac, &remlo, &remhi); |
/* (__u128)afrac << 64 - ( ((__u128)remhi<<64) + (__u128)remlo )*/ |
remhi = afrac - remhi - ( remlo > 0); |
remlo = - remlo; |
while ((int64_t) remhi < 0) { |
cfrac--; |
remlo += bfrac; |
remhi += ( remlo < bfrac ); |
} |
cfrac |= ( remlo != 0 ); |
} |
/* round and shift */ |
result = finishFloat64(cexp, cfrac, result.parts.sign); |
return result; |
} |
uint64_t divFloat64estim(uint64_t a, uint64_t b) |
{ |
uint64_t bhi; |
uint64_t remhi, remlo; |
uint64_t result; |
if ( b <= a ) { |
return 0xFFFFFFFFFFFFFFFFull; |
} |
bhi = b >> 32; |
result = ((bhi << 32) <= a) ?( 0xFFFFFFFFull << 32) : ( a / bhi) << 32; |
mul64integers(b, result, &remlo, &remhi); |
remhi = a - remhi - (remlo > 0); |
remlo = - remlo; |
b <<= 32; |
while ( (int64_t) remhi < 0 ) { |
result -= 0x1ll << 32; |
remlo += b; |
remhi += bhi + ( remlo < b ); |
} |
remhi = (remhi << 32) | (remlo >> 32); |
if (( bhi << 32) <= remhi) { |
result |= 0xFFFFFFFF; |
} else { |
result |= remhi / bhi; |
} |
return result; |
} |
/uspace/trunk/softfloat/generic/conversion.c |
---|
0,0 → 1,586 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include "sftypes.h" |
#include "conversion.h" |
#include "comparison.h" |
#include "common.h" |
float64 convertFloat32ToFloat64(float32 a) |
{ |
float64 result; |
uint64_t frac; |
result.parts.sign = a.parts.sign; |
result.parts.fraction = a.parts.fraction; |
result.parts.fraction <<= (FLOAT64_FRACTION_SIZE - FLOAT32_FRACTION_SIZE ); |
if ((isFloat32Infinity(a))||(isFloat32NaN(a))) { |
result.parts.exp = 0x7FF; |
/* TODO; check if its correct for SigNaNs*/ |
return result; |
}; |
result.parts.exp = a.parts.exp + ( (int)FLOAT64_BIAS - FLOAT32_BIAS ); |
if (a.parts.exp == 0) { |
/* normalize denormalized numbers */ |
if (result.parts.fraction == 0ll) { /* fix zero */ |
result.parts.exp = 0ll; |
return result; |
} |
frac = result.parts.fraction; |
while (!(frac & (0x10000000000000ll))) { |
frac <<= 1; |
--result.parts.exp; |
}; |
++result.parts.exp; |
result.parts.fraction = frac; |
}; |
return result; |
} |
float32 convertFloat64ToFloat32(float64 a) |
{ |
float32 result; |
int32_t exp; |
uint64_t frac; |
result.parts.sign = a.parts.sign; |
if (isFloat64NaN(a)) { |
result.parts.exp = 0xFF; |
if (isFloat64SigNaN(a)) { |
result.parts.fraction = 0x400000; /* set first bit of fraction nonzero */ |
return result; |
} |
result.parts.fraction = 0x1; /* fraction nonzero but its first bit is zero */ |
return result; |
}; |
if (isFloat64Infinity(a)) { |
result.parts.fraction = 0; |
result.parts.exp = 0xFF; |
return result; |
}; |
exp = (int)a.parts.exp - FLOAT64_BIAS + FLOAT32_BIAS; |
if (exp >= 0xFF) { |
/*FIXME: overflow*/ |
result.parts.fraction = 0; |
result.parts.exp = 0xFF; |
return result; |
} else if (exp <= 0 ) { |
/* underflow or denormalized */ |
result.parts.exp = 0; |
exp *= -1; |
if (exp > FLOAT32_FRACTION_SIZE ) { |
/* FIXME: underflow */ |
result.parts.fraction = 0; |
return result; |
}; |
/* denormalized */ |
frac = a.parts.fraction; |
frac |= 0x10000000000000ll; /* denormalize and set hidden bit */ |
frac >>= (FLOAT64_FRACTION_SIZE - FLOAT32_FRACTION_SIZE + 1); |
while (exp > 0) { |
--exp; |
frac >>= 1; |
}; |
result.parts.fraction = frac; |
return result; |
}; |
result.parts.exp = exp; |
result.parts.fraction = a.parts.fraction >> (FLOAT64_FRACTION_SIZE - FLOAT32_FRACTION_SIZE); |
return result; |
} |
/** Helping procedure for converting float32 to uint32 |
* @param a floating point number in normalized form (no NaNs or Inf are checked ) |
* @return unsigned integer |
*/ |
static uint32_t _float32_to_uint32_helper(float32 a) |
{ |
uint32_t frac; |
if (a.parts.exp < FLOAT32_BIAS) { |
/*TODO: rounding*/ |
return 0; |
} |
frac = a.parts.fraction; |
frac |= FLOAT32_HIDDEN_BIT_MASK; |
/* shift fraction to left so hidden bit will be the most significant bit */ |
frac <<= 32 - FLOAT32_FRACTION_SIZE - 1; |
frac >>= 32 - (a.parts.exp - FLOAT32_BIAS) - 1; |
if ((a.parts.sign == 1) && (frac != 0)) { |
frac = ~frac; |
++frac; |
} |
return frac; |
} |
/* Convert float to unsigned int32 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
uint32_t float32_to_uint32(float32 a) |
{ |
if (isFloat32NaN(a)) { |
return MAX_UINT32; |
} |
if (isFloat32Infinity(a) || (a.parts.exp >= (32 + FLOAT32_BIAS))) { |
if (a.parts.sign) { |
return MIN_UINT32; |
} |
return MAX_UINT32; |
} |
return _float32_to_uint32_helper(a); |
} |
/* Convert float to signed int32 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
int32_t float32_to_int32(float32 a) |
{ |
if (isFloat32NaN(a)) { |
return MAX_INT32; |
} |
if (isFloat32Infinity(a) || (a.parts.exp >= (32 + FLOAT32_BIAS))) { |
if (a.parts.sign) { |
return MIN_INT32; |
} |
return MAX_INT32; |
} |
return _float32_to_uint32_helper(a); |
} |
/** Helping procedure for converting float64 to uint64 |
* @param a floating point number in normalized form (no NaNs or Inf are checked ) |
* @return unsigned integer |
*/ |
static uint64_t _float64_to_uint64_helper(float64 a) |
{ |
uint64_t frac; |
if (a.parts.exp < FLOAT64_BIAS) { |
/*TODO: rounding*/ |
return 0; |
} |
frac = a.parts.fraction; |
frac |= FLOAT64_HIDDEN_BIT_MASK; |
/* shift fraction to left so hidden bit will be the most significant bit */ |
frac <<= 64 - FLOAT64_FRACTION_SIZE - 1; |
frac >>= 64 - (a.parts.exp - FLOAT64_BIAS) - 1; |
if ((a.parts.sign == 1) && (frac != 0)) { |
frac = ~frac; |
++frac; |
} |
return frac; |
} |
/* Convert float to unsigned int64 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
uint64_t float64_to_uint64(float64 a) |
{ |
if (isFloat64NaN(a)) { |
return MAX_UINT64; |
} |
if (isFloat64Infinity(a) || (a.parts.exp >= (64 + FLOAT64_BIAS))) { |
if (a.parts.sign) { |
return MIN_UINT64; |
} |
return MAX_UINT64; |
} |
return _float64_to_uint64_helper(a); |
} |
/* Convert float to signed int64 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
int64_t float64_to_int64(float64 a) |
{ |
if (isFloat64NaN(a)) { |
return MAX_INT64; |
} |
if (isFloat64Infinity(a) || (a.parts.exp >= (64 + FLOAT64_BIAS))) { |
if (a.parts.sign) { |
return MIN_INT64; |
} |
return MAX_INT64; |
} |
return _float64_to_uint64_helper(a); |
} |
/** Helping procedure for converting float32 to uint64 |
* @param a floating point number in normalized form (no NaNs or Inf are checked ) |
* @return unsigned integer |
*/ |
static uint64_t _float32_to_uint64_helper(float32 a) |
{ |
uint64_t frac; |
if (a.parts.exp < FLOAT32_BIAS) { |
/*TODO: rounding*/ |
return 0; |
} |
frac = a.parts.fraction; |
frac |= FLOAT32_HIDDEN_BIT_MASK; |
/* shift fraction to left so hidden bit will be the most significant bit */ |
frac <<= 64 - FLOAT32_FRACTION_SIZE - 1; |
frac >>= 64 - (a.parts.exp - FLOAT32_BIAS) - 1; |
if ((a.parts.sign == 1) && (frac != 0)) { |
frac = ~frac; |
++frac; |
} |
return frac; |
} |
/* Convert float to unsigned int64 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
uint64_t float32_to_uint64(float32 a) |
{ |
if (isFloat32NaN(a)) { |
return MAX_UINT64; |
} |
if (isFloat32Infinity(a) || (a.parts.exp >= (64 + FLOAT32_BIAS))) { |
if (a.parts.sign) { |
return MIN_UINT64; |
} |
return MAX_UINT64; |
} |
return _float32_to_uint64_helper(a); |
} |
/* Convert float to signed int64 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
int64_t float32_to_int64(float32 a) |
{ |
if (isFloat32NaN(a)) { |
return MAX_INT64; |
} |
if (isFloat32Infinity(a) || (a.parts.exp >= (64 + FLOAT32_BIAS))) { |
if (a.parts.sign) { |
return (MIN_INT64); |
} |
return MAX_INT64; |
} |
return _float32_to_uint64_helper(a); |
} |
/* Convert float64 to unsigned int32 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
uint32_t float64_to_uint32(float64 a) |
{ |
if (isFloat64NaN(a)) { |
return MAX_UINT32; |
} |
if (isFloat64Infinity(a) || (a.parts.exp >= (32 + FLOAT64_BIAS))) { |
if (a.parts.sign) { |
return MIN_UINT32; |
} |
return MAX_UINT32; |
} |
return (uint32_t)_float64_to_uint64_helper(a); |
} |
/* Convert float64 to signed int32 |
* FIXME: Im not sure what to return if overflow/underflow happens |
* - now its the biggest or the smallest int |
*/ |
int32_t float64_to_int32(float64 a) |
{ |
if (isFloat64NaN(a)) { |
return MAX_INT32; |
} |
if (isFloat64Infinity(a) || (a.parts.exp >= (32 + FLOAT64_BIAS))) { |
if (a.parts.sign) { |
return MIN_INT32; |
} |
return MAX_INT32; |
} |
return (int32_t)_float64_to_uint64_helper(a); |
} |
/** Convert unsigned integer to float32 |
* |
* |
*/ |
float32 uint32_to_float32(uint32_t i) |
{ |
int counter; |
int32_t exp; |
float32 result; |
result.parts.sign = 0; |
result.parts.fraction = 0; |
counter = countZeroes32(i); |
exp = FLOAT32_BIAS + 32 - counter - 1; |
if (counter == 32) { |
result.binary = 0; |
return result; |
} |
if (counter > 0) { |
i <<= counter - 1; |
} else { |
i >>= 1; |
} |
roundFloat32(&exp, &i); |
result.parts.fraction = i >> 7; |
result.parts.exp = exp; |
return result; |
} |
float32 int32_to_float32(int32_t i) |
{ |
float32 result; |
if (i < 0) { |
result = uint32_to_float32((uint32_t)(-i)); |
} else { |
result = uint32_to_float32((uint32_t)i); |
} |
result.parts.sign = i < 0; |
return result; |
} |
float32 uint64_to_float32(uint64_t i) |
{ |
int counter; |
int32_t exp; |
int32_t j; |
float32 result; |
result.parts.sign = 0; |
result.parts.fraction = 0; |
counter = countZeroes64(i); |
exp = FLOAT32_BIAS + 64 - counter - 1; |
if (counter == 64) { |
result.binary = 0; |
return result; |
} |
/* Shift all to the first 31 bits (31. will be hidden 1)*/ |
if (counter > 33) { |
i <<= counter - 1 - 32; |
} else { |
i >>= 1 + 32 - counter; |
} |
j = (uint32_t)i; |
roundFloat32(&exp, &j); |
result.parts.fraction = j >> 7; |
result.parts.exp = exp; |
return result; |
} |
float32 int64_to_float32(int64_t i) |
{ |
float32 result; |
if (i < 0) { |
result = uint64_to_float32((uint64_t)(-i)); |
} else { |
result = uint64_to_float32((uint64_t)i); |
} |
result.parts.sign = i < 0; |
return result; |
} |
/** Convert unsigned integer to float64 |
* |
* |
*/ |
float64 uint32_to_float64(uint32_t i) |
{ |
int counter; |
int32_t exp; |
float64 result; |
uint64_t frac; |
result.parts.sign = 0; |
result.parts.fraction = 0; |
counter = countZeroes32(i); |
exp = FLOAT64_BIAS + 32 - counter - 1; |
if (counter == 32) { |
result.binary = 0; |
return result; |
} |
frac = i; |
frac <<= counter + 32 - 1; |
roundFloat64(&exp, &frac); |
result.parts.fraction = frac >> 10; |
result.parts.exp = exp; |
return result; |
} |
float64 int32_to_float64(int32_t i) |
{ |
float64 result; |
if (i < 0) { |
result = uint32_to_float64((uint32_t)(-i)); |
} else { |
result = uint32_to_float64((uint32_t)i); |
} |
result.parts.sign = i < 0; |
return result; |
} |
float64 uint64_to_float64(uint64_t i) |
{ |
int counter; |
int32_t exp; |
float64 result; |
result.parts.sign = 0; |
result.parts.fraction = 0; |
counter = countZeroes64(i); |
exp = FLOAT64_BIAS + 64 - counter - 1; |
if (counter == 64) { |
result.binary = 0; |
return result; |
} |
if (counter > 0) { |
i <<= counter - 1; |
} else { |
i >>= 1; |
} |
roundFloat64(&exp, &i); |
result.parts.fraction = i >> 10; |
result.parts.exp = exp; |
return result; |
} |
float64 int64_to_float64(int64_t i) |
{ |
float64 result; |
if (i < 0) { |
result = uint64_to_float64((uint64_t)(-i)); |
} else { |
result = uint64_to_float64((uint64_t)i); |
} |
result.parts.sign = i < 0; |
return result; |
} |
/uspace/trunk/softfloat/generic/add.c |
---|
0,0 → 1,252 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<add.h> |
#include<comparison.h> |
/** Add two Float32 numbers with same signs |
*/ |
float32 addFloat32(float32 a, float32 b) |
{ |
int expdiff; |
uint32_t exp1, exp2,frac1, frac2; |
expdiff = a.parts.exp - b.parts.exp; |
if (expdiff < 0) { |
if (isFloat32NaN(b)) { |
/* TODO: fix SigNaN */ |
if (isFloat32SigNaN(b)) { |
}; |
return b; |
}; |
if (b.parts.exp == FLOAT32_MAX_EXPONENT) { |
return b; |
} |
frac1 = b.parts.fraction; |
exp1 = b.parts.exp; |
frac2 = a.parts.fraction; |
exp2 = a.parts.exp; |
expdiff *= -1; |
} else { |
if ((isFloat32NaN(a)) || (isFloat32NaN(b))) { |
/* TODO: fix SigNaN */ |
if (isFloat32SigNaN(a) || isFloat32SigNaN(b)) { |
}; |
return (isFloat32NaN(a)?a:b); |
}; |
if (a.parts.exp == FLOAT32_MAX_EXPONENT) { |
return a; |
} |
frac1 = a.parts.fraction; |
exp1 = a.parts.exp; |
frac2 = b.parts.fraction; |
exp2 = b.parts.exp; |
}; |
if (exp1 == 0) { |
/* both are denormalized */ |
frac1 += frac2; |
if (frac1 & FLOAT32_HIDDEN_BIT_MASK ) { |
/* result is not denormalized */ |
a.parts.exp = 1; |
}; |
a.parts.fraction = frac1; |
return a; |
}; |
frac1 |= FLOAT32_HIDDEN_BIT_MASK; /* add hidden bit */ |
if (exp2 == 0) { |
/* second operand is denormalized */ |
--expdiff; |
} else { |
/* add hidden bit to second operand */ |
frac2 |= FLOAT32_HIDDEN_BIT_MASK; |
}; |
/* create some space for rounding */ |
frac1 <<= 6; |
frac2 <<= 6; |
if (expdiff < (FLOAT32_FRACTION_SIZE + 2) ) { |
frac2 >>= expdiff; |
frac1 += frac2; |
} else { |
a.parts.exp = exp1; |
a.parts.fraction = (frac1 >> 6) & (~(FLOAT32_HIDDEN_BIT_MASK)); |
return a; |
} |
if (frac1 & (FLOAT32_HIDDEN_BIT_MASK << 7) ) { |
++exp1; |
frac1 >>= 1; |
}; |
/* rounding - if first bit after fraction is set then round up */ |
frac1 += (0x1 << 5); |
if (frac1 & (FLOAT32_HIDDEN_BIT_MASK << 7)) { |
/* rounding overflow */ |
++exp1; |
frac1 >>= 1; |
}; |
if ((exp1 == FLOAT32_MAX_EXPONENT ) || (exp2 > exp1)) { |
/* overflow - set infinity as result */ |
a.parts.exp = FLOAT32_MAX_EXPONENT; |
a.parts.fraction = 0; |
return a; |
} |
a.parts.exp = exp1; |
/*Clear hidden bit and shift */ |
a.parts.fraction = ((frac1 >> 6) & (~FLOAT32_HIDDEN_BIT_MASK)) ; |
return a; |
} |
/** Add two Float64 numbers with same signs |
*/ |
float64 addFloat64(float64 a, float64 b) |
{ |
int expdiff; |
uint32_t exp1, exp2; |
uint64_t frac1, frac2; |
expdiff = ((int )a.parts.exp) - b.parts.exp; |
if (expdiff < 0) { |
if (isFloat64NaN(b)) { |
/* TODO: fix SigNaN */ |
if (isFloat64SigNaN(b)) { |
}; |
return b; |
}; |
/* b is infinity and a not */ |
if (b.parts.exp == FLOAT64_MAX_EXPONENT ) { |
return b; |
} |
frac1 = b.parts.fraction; |
exp1 = b.parts.exp; |
frac2 = a.parts.fraction; |
exp2 = a.parts.exp; |
expdiff *= -1; |
} else { |
if (isFloat64NaN(a)) { |
/* TODO: fix SigNaN */ |
if (isFloat64SigNaN(a) || isFloat64SigNaN(b)) { |
}; |
return a; |
}; |
/* a is infinity and b not */ |
if (a.parts.exp == FLOAT64_MAX_EXPONENT ) { |
return a; |
} |
frac1 = a.parts.fraction; |
exp1 = a.parts.exp; |
frac2 = b.parts.fraction; |
exp2 = b.parts.exp; |
}; |
if (exp1 == 0) { |
/* both are denormalized */ |
frac1 += frac2; |
if (frac1 & FLOAT64_HIDDEN_BIT_MASK) { |
/* result is not denormalized */ |
a.parts.exp = 1; |
}; |
a.parts.fraction = frac1; |
return a; |
}; |
/* add hidden bit - frac1 is sure not denormalized */ |
frac1 |= FLOAT64_HIDDEN_BIT_MASK; |
/* second operand ... */ |
if (exp2 == 0) { |
/* ... is denormalized */ |
--expdiff; |
} else { |
/* is not denormalized */ |
frac2 |= FLOAT64_HIDDEN_BIT_MASK; |
}; |
/* create some space for rounding */ |
frac1 <<= 6; |
frac2 <<= 6; |
if (expdiff < (FLOAT64_FRACTION_SIZE + 2) ) { |
frac2 >>= expdiff; |
frac1 += frac2; |
} else { |
a.parts.exp = exp1; |
a.parts.fraction = (frac1 >> 6) & (~(FLOAT64_HIDDEN_BIT_MASK)); |
return a; |
} |
if (frac1 & (FLOAT64_HIDDEN_BIT_MASK << 7) ) { |
++exp1; |
frac1 >>= 1; |
}; |
/* rounding - if first bit after fraction is set then round up */ |
frac1 += (0x1 << 5); |
if (frac1 & (FLOAT64_HIDDEN_BIT_MASK << 7)) { |
/* rounding overflow */ |
++exp1; |
frac1 >>= 1; |
}; |
if ((exp1 == FLOAT64_MAX_EXPONENT ) || (exp2 > exp1)) { |
/* overflow - set infinity as result */ |
a.parts.exp = FLOAT64_MAX_EXPONENT; |
a.parts.fraction = 0; |
return a; |
} |
a.parts.exp = exp1; |
/*Clear hidden bit and shift */ |
a.parts.fraction = ( (frac1 >> 6 ) & (~FLOAT64_HIDDEN_BIT_MASK)); |
return a; |
} |
/uspace/trunk/softfloat/generic/common.c |
---|
0,0 → 1,205 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<common.h> |
/* Table for fast leading zeroes counting */ |
char zeroTable[256] = { |
8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, \ |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, \ |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, \ |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
}; |
/** Take fraction shifted by 10 bits to left, round it, normalize it and detect exceptions |
* @param exp exponent with bias |
* @param cfrac fraction shifted 10 places left with added hidden bit |
* @return valied float64 |
*/ |
float64 finishFloat64(int32_t cexp, uint64_t cfrac, char sign) |
{ |
float64 result; |
result.parts.sign = sign; |
/* find first nonzero digit and shift result and detect possibly underflow */ |
while ((cexp > 0) && (cfrac) && (!(cfrac & (FLOAT64_HIDDEN_BIT_MASK << (64 - FLOAT64_FRACTION_SIZE - 1 ) )))) { |
cexp--; |
cfrac <<= 1; |
/* TODO: fix underflow */ |
}; |
if ((cexp < 0) || ( cexp == 0 && (!(cfrac & (FLOAT64_HIDDEN_BIT_MASK << (64 - FLOAT64_FRACTION_SIZE - 1)))))) { |
/* FIXME: underflow */ |
result.parts.exp = 0; |
if ((cexp + FLOAT64_FRACTION_SIZE + 1) < 0) { /* +1 is place for rounding */ |
result.parts.fraction = 0; |
return result; |
} |
while (cexp < 0) { |
cexp++; |
cfrac >>= 1; |
} |
cfrac += (0x1 << (64 - FLOAT64_FRACTION_SIZE - 3)); |
if (!(cfrac & (FLOAT64_HIDDEN_BIT_MASK << (64 - FLOAT64_FRACTION_SIZE - 1)))) { |
result.parts.fraction = ((cfrac >>(64 - FLOAT64_FRACTION_SIZE - 2) ) & (~FLOAT64_HIDDEN_BIT_MASK)); |
return result; |
} |
} else { |
cfrac += (0x1 << (64 - FLOAT64_FRACTION_SIZE - 3)); |
} |
++cexp; |
if (cfrac & (FLOAT64_HIDDEN_BIT_MASK << (64 - FLOAT64_FRACTION_SIZE - 1 ))) { |
++cexp; |
cfrac >>= 1; |
} |
/* check overflow */ |
if (cexp >= FLOAT64_MAX_EXPONENT ) { |
/* FIXME: overflow, return infinity */ |
result.parts.exp = FLOAT64_MAX_EXPONENT; |
result.parts.fraction = 0; |
return result; |
} |
result.parts.exp = (uint32_t)cexp; |
result.parts.fraction = ((cfrac >>(64 - FLOAT64_FRACTION_SIZE - 2 ) ) & (~FLOAT64_HIDDEN_BIT_MASK)); |
return result; |
} |
/** Counts leading zeroes in 64bit unsigned integer |
* @param i |
*/ |
int countZeroes64(uint64_t i) |
{ |
int j; |
for (j =0; j < 64; j += 8) { |
if ( i & (0xFFll << (56 - j))) { |
return (j + countZeroes8(i >> (56 - j))); |
} |
} |
return 64; |
} |
/** Counts leading zeroes in 32bit unsigned integer |
* @param i |
*/ |
int countZeroes32(uint32_t i) |
{ |
int j; |
for (j =0; j < 32; j += 8) { |
if ( i & (0xFF << (24 - j))) { |
return (j + countZeroes8(i >> (24 - j))); |
} |
} |
return 32; |
} |
/** Counts leading zeroes in byte |
* @param i |
*/ |
int countZeroes8(uint8_t i) |
{ |
return zeroTable[i]; |
} |
/** Round and normalize number expressed by exponent and fraction with first bit (equal to hidden bit) at 30. bit |
* @param exp exponent |
* @param fraction part with hidden bit shifted to 30. bit |
*/ |
void roundFloat32(int32_t *exp, uint32_t *fraction) |
{ |
/* rounding - if first bit after fraction is set then round up */ |
(*fraction) += (0x1 << 6); |
if ((*fraction) & (FLOAT32_HIDDEN_BIT_MASK << 8)) { |
/* rounding overflow */ |
++(*exp); |
(*fraction) >>= 1; |
}; |
if (((*exp) >= FLOAT32_MAX_EXPONENT ) || ((*exp) < 0)) { |
/* overflow - set infinity as result */ |
(*exp) = FLOAT32_MAX_EXPONENT; |
(*fraction) = 0; |
return; |
} |
return; |
} |
/** Round and normalize number expressed by exponent and fraction with first bit (equal to hidden bit) at 62. bit |
* @param exp exponent |
* @param fraction part with hidden bit shifted to 62. bit |
*/ |
void roundFloat64(int32_t *exp, uint64_t *fraction) |
{ |
/* rounding - if first bit after fraction is set then round up */ |
(*fraction) += (0x1 << 9); |
if ((*fraction) & (FLOAT64_HIDDEN_BIT_MASK << 11)) { |
/* rounding overflow */ |
++(*exp); |
(*fraction) >>= 1; |
}; |
if (((*exp) >= FLOAT64_MAX_EXPONENT ) || ((*exp) < 0)) { |
/* overflow - set infinity as result */ |
(*exp) = FLOAT64_MAX_EXPONENT; |
(*fraction) = 0; |
return; |
} |
return; |
} |
/uspace/trunk/softfloat/generic/sub.c |
---|
0,0 → 1,255 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<sub.h> |
#include<comparison.h> |
/** Subtract two float32 numbers with same signs |
*/ |
float32 subFloat32(float32 a, float32 b) |
{ |
int expdiff; |
uint32_t exp1, exp2, frac1, frac2; |
float32 result; |
result.f = 0; |
expdiff = a.parts.exp - b.parts.exp; |
if ((expdiff < 0 ) || ((expdiff == 0) && (a.parts.fraction < b.parts.fraction))) { |
if (isFloat32NaN(b)) { |
/* TODO: fix SigNaN */ |
if (isFloat32SigNaN(b)) { |
}; |
return b; |
}; |
if (b.parts.exp == FLOAT32_MAX_EXPONENT) { |
b.parts.sign = !b.parts.sign; /* num -(+-inf) = -+inf */ |
return b; |
} |
result.parts.sign = !a.parts.sign; |
frac1 = b.parts.fraction; |
exp1 = b.parts.exp; |
frac2 = a.parts.fraction; |
exp2 = a.parts.exp; |
expdiff *= -1; |
} else { |
if (isFloat32NaN(a)) { |
/* TODO: fix SigNaN */ |
if (isFloat32SigNaN(a) || isFloat32SigNaN(b)) { |
}; |
return a; |
}; |
if (a.parts.exp == FLOAT32_MAX_EXPONENT) { |
if (b.parts.exp == FLOAT32_MAX_EXPONENT) { |
/* inf - inf => nan */ |
/* TODO: fix exception */ |
result.binary = FLOAT32_NAN; |
return result; |
}; |
return a; |
} |
result.parts.sign = a.parts.sign; |
frac1 = a.parts.fraction; |
exp1 = a.parts.exp; |
frac2 = b.parts.fraction; |
exp2 = b.parts.exp; |
}; |
if (exp1 == 0) { |
/* both are denormalized */ |
result.parts.fraction = frac1-frac2; |
if (result.parts.fraction > frac1) { |
/* TODO: underflow exception */ |
return result; |
}; |
result.parts.exp = 0; |
return result; |
}; |
/* add hidden bit */ |
frac1 |= FLOAT32_HIDDEN_BIT_MASK; |
if (exp2 == 0) { |
/* denormalized */ |
--expdiff; |
} else { |
/* normalized */ |
frac2 |= FLOAT32_HIDDEN_BIT_MASK; |
}; |
/* create some space for rounding */ |
frac1 <<= 6; |
frac2 <<= 6; |
if (expdiff > FLOAT32_FRACTION_SIZE + 1) { |
goto done; |
}; |
frac1 = frac1 - (frac2 >> expdiff); |
done: |
/* TODO: find first nonzero digit and shift result and detect possibly underflow */ |
while ((exp1 > 0) && (!(frac1 & (FLOAT32_HIDDEN_BIT_MASK << 6 )))) { |
--exp1; |
frac1 <<= 1; |
/* TODO: fix underflow - frac1 == 0 does not necessary means underflow... */ |
}; |
/* rounding - if first bit after fraction is set then round up */ |
frac1 += 0x20; |
if (frac1 & (FLOAT32_HIDDEN_BIT_MASK << 7)) { |
++exp1; |
frac1 >>= 1; |
}; |
/*Clear hidden bit and shift */ |
result.parts.fraction = ((frac1 >> 6) & (~FLOAT32_HIDDEN_BIT_MASK)); |
result.parts.exp = exp1; |
return result; |
} |
/** Subtract two float64 numbers with same signs |
*/ |
float64 subFloat64(float64 a, float64 b) |
{ |
int expdiff; |
uint32_t exp1, exp2; |
uint64_t frac1, frac2; |
float64 result; |
result.d = 0; |
expdiff = a.parts.exp - b.parts.exp; |
if ((expdiff < 0 ) || ((expdiff == 0) && (a.parts.fraction < b.parts.fraction))) { |
if (isFloat64NaN(b)) { |
/* TODO: fix SigNaN */ |
if (isFloat64SigNaN(b)) { |
}; |
return b; |
}; |
if (b.parts.exp == FLOAT64_MAX_EXPONENT) { |
b.parts.sign = !b.parts.sign; /* num -(+-inf) = -+inf */ |
return b; |
} |
result.parts.sign = !a.parts.sign; |
frac1 = b.parts.fraction; |
exp1 = b.parts.exp; |
frac2 = a.parts.fraction; |
exp2 = a.parts.exp; |
expdiff *= -1; |
} else { |
if (isFloat64NaN(a)) { |
/* TODO: fix SigNaN */ |
if (isFloat64SigNaN(a) || isFloat64SigNaN(b)) { |
}; |
return a; |
}; |
if (a.parts.exp == FLOAT64_MAX_EXPONENT) { |
if (b.parts.exp == FLOAT64_MAX_EXPONENT) { |
/* inf - inf => nan */ |
/* TODO: fix exception */ |
result.binary = FLOAT64_NAN; |
return result; |
}; |
return a; |
} |
result.parts.sign = a.parts.sign; |
frac1 = a.parts.fraction; |
exp1 = a.parts.exp; |
frac2 = b.parts.fraction; |
exp2 = b.parts.exp; |
}; |
if (exp1 == 0) { |
/* both are denormalized */ |
result.parts.fraction = frac1 - frac2; |
if (result.parts.fraction > frac1) { |
/* TODO: underflow exception */ |
return result; |
}; |
result.parts.exp = 0; |
return result; |
}; |
/* add hidden bit */ |
frac1 |= FLOAT64_HIDDEN_BIT_MASK; |
if (exp2 == 0) { |
/* denormalized */ |
--expdiff; |
} else { |
/* normalized */ |
frac2 |= FLOAT64_HIDDEN_BIT_MASK; |
}; |
/* create some space for rounding */ |
frac1 <<= 6; |
frac2 <<= 6; |
if (expdiff > FLOAT64_FRACTION_SIZE + 1) { |
goto done; |
}; |
frac1 = frac1 - (frac2 >> expdiff); |
done: |
/* TODO: find first nonzero digit and shift result and detect possibly underflow */ |
while ((exp1 > 0) && (!(frac1 & (FLOAT64_HIDDEN_BIT_MASK << 6 )))) { |
--exp1; |
frac1 <<= 1; |
/* TODO: fix underflow - frac1 == 0 does not necessary means underflow... */ |
}; |
/* rounding - if first bit after fraction is set then round up */ |
frac1 += 0x20; |
if (frac1 & (FLOAT64_HIDDEN_BIT_MASK << 7)) { |
++exp1; |
frac1 >>= 1; |
}; |
/*Clear hidden bit and shift */ |
result.parts.fraction = ((frac1 >> 6) & (~FLOAT64_HIDDEN_BIT_MASK)); |
result.parts.exp = exp1; |
return result; |
} |
/uspace/trunk/softfloat/generic/mul.c |
---|
0,0 → 1,287 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<mul.h> |
#include<comparison.h> |
#include<common.h> |
/** Multiply two 32 bit float numbers |
* |
*/ |
float32 mulFloat32(float32 a, float32 b) |
{ |
float32 result; |
uint64_t frac1, frac2; |
int32_t exp; |
result.parts.sign = a.parts.sign ^ b.parts.sign; |
if (isFloat32NaN(a) || isFloat32NaN(b) ) { |
/* TODO: fix SigNaNs */ |
if (isFloat32SigNaN(a)) { |
result.parts.fraction = a.parts.fraction; |
result.parts.exp = a.parts.exp; |
return result; |
}; |
if (isFloat32SigNaN(b)) { /* TODO: fix SigNaN */ |
result.parts.fraction = b.parts.fraction; |
result.parts.exp = b.parts.exp; |
return result; |
}; |
/* set NaN as result */ |
result.binary = FLOAT32_NAN; |
return result; |
}; |
if (isFloat32Infinity(a)) { |
if (isFloat32Zero(b)) { |
/* FIXME: zero * infinity */ |
result.binary = FLOAT32_NAN; |
return result; |
} |
result.parts.fraction = a.parts.fraction; |
result.parts.exp = a.parts.exp; |
return result; |
} |
if (isFloat32Infinity(b)) { |
if (isFloat32Zero(a)) { |
/* FIXME: zero * infinity */ |
result.binary = FLOAT32_NAN; |
return result; |
} |
result.parts.fraction = b.parts.fraction; |
result.parts.exp = b.parts.exp; |
return result; |
} |
/* exp is signed so we can easy detect underflow */ |
exp = a.parts.exp + b.parts.exp; |
exp -= FLOAT32_BIAS; |
if (exp >= FLOAT32_MAX_EXPONENT) { |
/* FIXME: overflow */ |
/* set infinity as result */ |
result.binary = FLOAT32_INF; |
result.parts.sign = a.parts.sign ^ b.parts.sign; |
return result; |
}; |
if (exp < 0) { |
/* FIXME: underflow */ |
/* return signed zero */ |
result.parts.fraction = 0x0; |
result.parts.exp = 0x0; |
return result; |
}; |
frac1 = a.parts.fraction; |
if (a.parts.exp > 0) { |
frac1 |= FLOAT32_HIDDEN_BIT_MASK; |
} else { |
++exp; |
}; |
frac2 = b.parts.fraction; |
if (b.parts.exp > 0) { |
frac2 |= FLOAT32_HIDDEN_BIT_MASK; |
} else { |
++exp; |
}; |
frac1 <<= 1; /* one bit space for rounding */ |
frac1 = frac1 * frac2; |
/* round and return */ |
while ((exp < FLOAT32_MAX_EXPONENT) && (frac1 >= ( 1 << (FLOAT32_FRACTION_SIZE + 2)))) { |
/* 23 bits of fraction + one more for hidden bit (all shifted 1 bit left)*/ |
++exp; |
frac1 >>= 1; |
}; |
/* rounding */ |
/* ++frac1; FIXME: not works - without it is ok */ |
frac1 >>= 1; /* shift off rounding space */ |
if ((exp < FLOAT32_MAX_EXPONENT) && (frac1 >= (1 << (FLOAT32_FRACTION_SIZE + 1)))) { |
++exp; |
frac1 >>= 1; |
}; |
if (exp >= FLOAT32_MAX_EXPONENT ) { |
/* TODO: fix overflow */ |
/* return infinity*/ |
result.parts.exp = FLOAT32_MAX_EXPONENT; |
result.parts.fraction = 0x0; |
return result; |
} |
exp -= FLOAT32_FRACTION_SIZE; |
if (exp <= FLOAT32_FRACTION_SIZE) { |
/* denormalized number */ |
frac1 >>= 1; /* denormalize */ |
while ((frac1 > 0) && (exp < 0)) { |
frac1 >>= 1; |
++exp; |
}; |
if (frac1 == 0) { |
/* FIXME : underflow */ |
result.parts.exp = 0; |
result.parts.fraction = 0; |
return result; |
}; |
}; |
result.parts.exp = exp; |
result.parts.fraction = frac1 & ( (1 << FLOAT32_FRACTION_SIZE) - 1); |
return result; |
} |
/** Multiply two 64 bit float numbers |
* |
*/ |
float64 mulFloat64(float64 a, float64 b) |
{ |
float64 result; |
uint64_t frac1, frac2; |
int32_t exp; |
result.parts.sign = a.parts.sign ^ b.parts.sign; |
if (isFloat64NaN(a) || isFloat64NaN(b) ) { |
/* TODO: fix SigNaNs */ |
if (isFloat64SigNaN(a)) { |
result.parts.fraction = a.parts.fraction; |
result.parts.exp = a.parts.exp; |
return result; |
}; |
if (isFloat64SigNaN(b)) { /* TODO: fix SigNaN */ |
result.parts.fraction = b.parts.fraction; |
result.parts.exp = b.parts.exp; |
return result; |
}; |
/* set NaN as result */ |
result.binary = FLOAT64_NAN; |
return result; |
}; |
if (isFloat64Infinity(a)) { |
if (isFloat64Zero(b)) { |
/* FIXME: zero * infinity */ |
result.binary = FLOAT64_NAN; |
return result; |
} |
result.parts.fraction = a.parts.fraction; |
result.parts.exp = a.parts.exp; |
return result; |
} |
if (isFloat64Infinity(b)) { |
if (isFloat64Zero(a)) { |
/* FIXME: zero * infinity */ |
result.binary = FLOAT64_NAN; |
return result; |
} |
result.parts.fraction = b.parts.fraction; |
result.parts.exp = b.parts.exp; |
return result; |
} |
/* exp is signed so we can easy detect underflow */ |
exp = a.parts.exp + b.parts.exp - FLOAT64_BIAS; |
frac1 = a.parts.fraction; |
if (a.parts.exp > 0) { |
frac1 |= FLOAT64_HIDDEN_BIT_MASK; |
} else { |
++exp; |
}; |
frac2 = b.parts.fraction; |
if (b.parts.exp > 0) { |
frac2 |= FLOAT64_HIDDEN_BIT_MASK; |
} else { |
++exp; |
}; |
frac1 <<= (64 - FLOAT64_FRACTION_SIZE - 1); |
frac2 <<= (64 - FLOAT64_FRACTION_SIZE - 2); |
mul64integers(frac1, frac2, &frac1, &frac2); |
frac2 |= (frac1 != 0); |
if (frac2 & (0x1ll << 62)) { |
frac2 <<= 1; |
exp--; |
} |
result = finishFloat64(exp, frac2, result.parts.sign); |
return result; |
} |
/** Multiply two 64 bit numbers and return result in two parts |
* @param a first operand |
* @param b second operand |
* @param lo lower part from result |
* @param hi higher part of result |
*/ |
void mul64integers(uint64_t a,uint64_t b, uint64_t *lo, uint64_t *hi) |
{ |
uint64_t low, high, middle1, middle2; |
uint32_t alow, blow; |
alow = a & 0xFFFFFFFF; |
blow = b & 0xFFFFFFFF; |
a >>= 32; |
b >>= 32; |
low = ((uint64_t)alow) * blow; |
middle1 = a * blow; |
middle2 = alow * b; |
high = a * b; |
middle1 += middle2; |
high += (((uint64_t)(middle1 < middle2)) << 32) + (middle1 >> 32); |
middle1 <<= 32; |
low += middle1; |
high += (low < middle1); |
*lo = low; |
*hi = high; |
return; |
} |
/uspace/trunk/softfloat/generic/comparison.c |
---|
0,0 → 1,123 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include<sftypes.h> |
#include<comparison.h> |
inline int isFloat32NaN(float32 f) |
{ /* NaN : exp = 0xff and nonzero fraction */ |
return ((f.parts.exp==0xFF)&&(f.parts.fraction)); |
}; |
inline int isFloat64NaN(float64 d) |
{ /* NaN : exp = 0x7ff and nonzero fraction */ |
return ((d.parts.exp==0x7FF)&&(d.parts.fraction)); |
}; |
inline int isFloat32SigNaN(float32 f) |
{ /* SigNaN : exp = 0xff fraction = 0xxxxx..x (binary), where at least one x is nonzero */ |
return ((f.parts.exp==0xFF)&&(f.parts.fraction<0x400000)&&(f.parts.fraction)); |
}; |
inline int isFloat64SigNaN(float64 d) |
{ /* SigNaN : exp = 0x7ff fraction = 0xxxxx..x (binary), where at least one x is nonzero */ |
return ((d.parts.exp==0x7FF)&&(d.parts.fraction)&&(d.parts.fraction<0x8000000000000ll)); |
}; |
inline int isFloat32Infinity(float32 f) |
{ |
return ((f.parts.exp==0xFF)&&(f.parts.fraction==0x0)); |
}; |
inline int isFloat64Infinity(float64 d) |
{ |
return ((d.parts.exp==0x7FF)&&(d.parts.fraction==0x0)); |
}; |
inline int isFloat32Zero(float32 f) |
{ |
return (((f.binary) & 0x7FFFFFFF) == 0); |
} |
inline int isFloat64Zero(float64 d) |
{ |
return (((d.binary) & 0x7FFFFFFFFFFFFFFFll) == 0); |
} |
/** |
* @return 1, if both floats are equal - but NaNs are not recognized |
*/ |
inline int isFloat32eq(float32 a, float32 b) |
{ |
return ((a.binary==b.binary)||(((a.binary| b.binary)&0x7FFFFFFF)==0)); /* a equals to b or both are zeros (with any sign) */ |
} |
/** |
* @return 1, if a<b - but NaNs are not recognized |
*/ |
inline int isFloat32lt(float32 a, float32 b) |
{ |
if (((a.binary| b.binary)&0x7FFFFFFF)==0) { |
return 0; /* +- zeroes */ |
}; |
if ((a.parts.sign)&&(b.parts.sign)) { |
/*if both are negative, smaller is that with greater binary value*/ |
return (a.binary>b.binary); |
}; |
/* lets negate signs - now will be positive numbers allways bigger than negative (first bit will be set for unsigned integer comparison)*/ |
a.parts.sign=!a.parts.sign; |
b.parts.sign=!b.parts.sign; |
return (a.binary<b.binary); |
} |
/** |
* @return 1, if a>b - but NaNs are not recognized |
*/ |
inline int isFloat32gt(float32 a, float32 b) |
{ |
if (((a.binary| b.binary)&0x7FFFFFFF)==0) { |
return 0; /* zeroes are equal with any sign */ |
}; |
if ((a.parts.sign)&&(b.parts.sign)) { |
/*if both are negative, greater is that with smaller binary value*/ |
return (a.binary<b.binary); |
}; |
/* lets negate signs - now will be positive numbers allways bigger than negative (first bit will be set for unsigned integer comparison)*/ |
a.parts.sign=!a.parts.sign; |
b.parts.sign=!b.parts.sign; |
return (a.binary>b.binary); |
} |
/uspace/trunk/softfloat/generic/other.c |
---|
0,0 → 1,29 |
/* |
* Copyright (C) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/uspace/trunk/softfloat/Makefile |
---|
0,0 → 1,81 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Common compiler flags |
# |
LIBC_PREFIX = ../libc |
## Setup toolchain |
# |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS +=-Iinclude -Iarch/$(ARCH)/include/ |
## Sources |
# |
GENERIC_SOURCES = \ |
generic/add.c \ |
generic/common.c \ |
generic/comparison.c \ |
generic/conversion.c \ |
generic/div.c \ |
generic/mul.c \ |
generic/other.c \ |
generic/softfloat.c \ |
generic/sub.c |
ARCH_SOURCES = |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
.PHONY: all clean depend |
all: libsoftfloat.a |
-include Makefile.depend |
clean: |
-rm -f libsoftfloat.a Makefile.depend |
find generic/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(GENERIC_SOURCES) > Makefile.depend |
libsoftfloat.a: depend $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
$(AR) rc libsoftfloat.a $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/softfloat/arch/sparc64/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int64(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int64(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint64(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint64(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int64_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int64_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint64_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint64_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/ia64/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int64(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int64(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint64(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint64(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int64_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int64_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint64_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint64_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/mips32eb/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int32(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int32(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint32(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint32(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int32_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int32_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint32_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint32_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/ppc32/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int32(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int32(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint32(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint32(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int32_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int32_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint32_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint32_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/amd64/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int64(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int64(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint64(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint64(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int64_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int64_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint64_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint64_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/mips32/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int32(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int32(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint32(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint32(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int32_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int32_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint32_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint32_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softfloat/arch/ia32/include/functions.h |
---|
0,0 → 1,65 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTFLOAT_FUNCTIONS_H__ |
#define __SOFTFLOAT_FUNCTIONS_H__ |
#define float32_to_int(X) float32_to_int32(X); |
#define float32_to_long(X) float32_to_int32(X); |
#define float32_to_longlong(X) float32_to_int64(X); |
#define float64_to_int(X) float64_to_int32(X); |
#define float64_to_long(X) float64_to_int32(X); |
#define float64_to_longlong(X) float64_to_int64(X); |
#define float32_to_uint(X) float32_to_uint32(X); |
#define float32_to_ulong(X) float32_to_uint32(X); |
#define float32_to_ulonglong(X) float32_to_uint64(X); |
#define float64_to_uint(X) float64_to_uint32(X); |
#define float64_to_ulong(X) float64_to_uint32(X); |
#define float64_to_ulonglong(X) float64_to_uint64(X); |
#define int_to_float32(X) int32_to_float32(X); |
#define long_to_float32(X) int32_to_float32(X); |
#define longlong_to_float32(X) int64_to_float32(X); |
#define int_to_float64(X) int32_to_float64(X); |
#define long_to_float64(X) int32_to_float64(X); |
#define longlong_to_float64(X) int64_to_float64(X); |
#define uint_to_float32(X) uint32_to_float32(X); |
#define ulong_to_float32(X) uint32_to_float32(X); |
#define ulonglong_to_float32(X) uint64_to_float32(X); |
#define uint_to_float64(X) uint32_to_float64(X); |
#define ulong_to_float64(X) uint32_to_float64(X); |
#define ulonglong_to_float64(X) uint64_to_float64(X); |
#endif |
/uspace/trunk/softint/Makefile |
---|
0,0 → 1,73 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Common compiler flags |
# |
LIBC_PREFIX = ../libc |
## Setup toolchain |
# |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -Iinclude |
## Sources |
# |
ARCH_SOURCES = |
GENERIC_SOURCES = \ |
generic/division.c |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
.PHONY: all clean depend |
all: softint.a |
-include Makefile.depend |
clean: |
-rm -f softint.a Makefile.depend |
find generic/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(GENERIC_SOURCES) > Makefile.depend |
softint.a: depend $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
$(AR) rc softint.a $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/softint/include/division.h |
---|
0,0 → 1,60 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SOFTINT_DIVISION_H__ |
#define __SOFTINT_DIVISION_H__ |
/* 32bit integer division */ |
int __divsi3(int a, int b); |
/* 64bit integer division */ |
long long __divdi3(long long a, long long b); |
/* 32bit unsigned integer division */ |
unsigned int __udivsi3(unsigned int a, unsigned int b); |
/* 64bit unsigned integer division */ |
unsigned long long __udivdi3(unsigned long long a, unsigned long long b); |
/* 32bit remainder of the signed division */ |
int __modsi3(int a, int b); |
/* 64bit remainder of the signed division */ |
long long __moddi3(long long a, long long b); |
/* 32bit remainder of the unsigned division */ |
unsigned int __umodsi3(unsigned int a, unsigned int b); |
/* 64bit remainder of the unsigned division */ |
unsigned long long __umoddi3(unsigned long long a, unsigned long long b); |
unsigned long long __udivmoddi3(unsigned long long a, unsigned long long b, unsigned long long *c); |
#endif |
/uspace/trunk/softint/generic/division.c |
---|
0,0 → 1,188 |
/* |
* Copyright (C) 2006 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <division.h> |
#define ABSVAL(x) ( (x) > 0 ? (x) : -(x)) |
#define SGN(x) ( (x) >= 0 ? 1 : 0 ) |
static unsigned int divandmod32(unsigned int a, unsigned int b, unsigned int *remainder) |
{ |
unsigned int result; |
int steps = sizeof(unsigned int) * 8; |
*remainder = 0; |
result = 0; |
if (b == 0) { |
/* FIXME: division by zero */ |
return 0; |
} |
if ( a < b) { |
*remainder = a; |
return 0; |
} |
for ( ; steps > 0; steps--) { |
/* shift one bit to remainder */ |
*remainder = ( (*remainder) << 1) | (( a >> 31) & 0x1); |
result <<= 1; |
if (*remainder >= b) { |
*remainder -= b; |
result |= 0x1; |
} |
a <<= 1; |
} |
return result; |
} |
static unsigned long long divandmod64(unsigned long long a, unsigned long long b, unsigned long long *remainder) |
{ |
unsigned long long result; |
int steps = sizeof(unsigned long long) * 8; |
*remainder = 0; |
result = 0; |
if (b == 0) { |
/* FIXME: division by zero */ |
return 0; |
} |
if ( a < b) { |
*remainder = a; |
return 0; |
} |
for ( ; steps > 0; steps--) { |
/* shift one bit to remainder */ |
*remainder = ( (*remainder) << 1) | ((a >> 63) & 0x1); |
result <<= 1; |
if (*remainder >= b) { |
*remainder -= b; |
result |= 0x1; |
} |
a <<= 1; |
} |
return result; |
} |
/* 32bit integer division */ |
int __divsi3(int a, int b) |
{ |
unsigned int rem; |
int result; |
result = (int)divandmod32(ABSVAL(a), ABSVAL(b), &rem); |
if ( SGN(a) == SGN(b)) return result; |
return -result; |
} |
/* 64bit integer division */ |
long long __divdi3(long long a, long long b) |
{ |
unsigned long long rem; |
long long result; |
result = (long long)divandmod64(ABSVAL(a), ABSVAL(b), &rem); |
if ( SGN(a) == SGN(b)) return result; |
return -result; |
} |
/* 32bit unsigned integer division */ |
unsigned int __udivsi3(unsigned int a, unsigned int b) |
{ |
unsigned int rem; |
return divandmod32(a, b, &rem); |
} |
/* 64bit unsigned integer division */ |
unsigned long long __udivdi3(unsigned long long a, unsigned long long b) |
{ |
unsigned long long rem; |
return divandmod64(a, b, &rem); |
} |
/* 32bit remainder of the signed division */ |
int __modsi3(int a, int b) |
{ |
unsigned int rem; |
divandmod32(a, b, &rem); |
/* if divident is negative, remainder must be too */ |
if (!(SGN(a))) { |
return -((int)rem); |
} |
return (int)rem; |
} |
/* 64bit remainder of the signed division */ |
long long __moddi3(long long a,long long b) |
{ |
unsigned long long rem; |
divandmod64(a, b, &rem); |
/* if divident is negative, remainder must be too */ |
if (!(SGN(a))) { |
return -((long long)rem); |
} |
return (long long)rem; |
} |
/* 32bit remainder of the unsigned division */ |
unsigned int __umodsi3(unsigned int a, unsigned int b) |
{ |
unsigned int rem; |
divandmod32(a, b, &rem); |
return rem; |
} |
/* 64bit remainder of the unsigned division */ |
unsigned long long __umoddi3(unsigned long long a, unsigned long long b) |
{ |
unsigned long long rem; |
divandmod64(a, b, &rem); |
return rem; |
} |
unsigned long long __udivmoddi3(unsigned long long a, unsigned long long b, unsigned long long *c) |
{ |
return divandmod64(a, b, c); |
} |
/uspace/trunk/ns/ns.c |
---|
0,0 → 1,46 |
#include <ipc.h> |
#include <stdio.h> |
#include <unistd.h> |
#include <stdlib.h> |
#include <ns.h> |
#include <errno.h> |
static int service; |
int main(int argc, char **argv) |
{ |
ipc_call_t call; |
ipc_callid_t callid; |
ipcarg_t retval, arg1, arg2; |
printf("Name service started.\n"); |
while (1) { |
callid = ipc_wait_for_call(&call, 0); |
printf("Received call from: %P..%Q\n", &call.taskid,call.taskid); |
switch (IPC_GET_METHOD(call.data)) { |
case IPC_M_CONNECTTOME: |
printf("Somebody wants to connect with phoneid %d...accepting\n", IPC_GET_ARG3(call.data)); |
service = IPC_GET_ARG3(call.data); |
retval = 0; |
break; |
case NS_PING: |
printf("Ping...%P %P\n", IPC_GET_ARG1(call.data), |
IPC_GET_ARG2(call.data)); |
retval = 0; |
arg1 = 0xdead; |
arg2 = 0xbeef; |
break; |
case NS_PING_SVC: |
printf("Pinging service %d\n", service); |
ipc_call_sync(service, NS_PING, 0xbeef, 0); |
printf("Got pong\n"); |
break; |
default: |
printf("Unknown method: %d\n", IPC_GET_METHOD(call.data)); |
retval = ENOENT; |
break; |
} |
ipc_answer(callid, retval, arg1, arg2); |
} |
} |
/uspace/trunk/ns/Makefile |
---|
0,0 → 1,74 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Setup toolchain |
# |
LIBC_PREFIX = ../libc |
LIBIPC_PREFIX = ../libipc |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -I../libipc/include |
LIBS = $(LIBIPC_PREFIX)/libipc.a $(LIBC_PREFIX)/libc.a |
## Sources |
# |
OUTPUT = ns |
SOURCES = \ |
ns.c |
OBJECTS := $(addsuffix .o,$(basename $(SOURCES))) |
.PHONY: all clean depend disasm |
all: $(OUTPUT) disasm |
-include Makefile.depend |
clean: |
-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm Makefile.depend |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(SOURCES) > Makefile.depend |
$(OUTPUT): $(OBJECTS) $(LIBS) |
$(LD) -T $(LIBC_PREFIX)/arch/$(ARCH)/_link.ld $(OBJECTS) $(LIBS) $(LFLAGS) -o $@ -Map $(OUTPUT).map |
disasm: |
$(OBJDUMP) -d $(OUTPUT) >$(OUTPUT).disasm |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/libipc/include/ipc.h |
---|
0,0 → 1,68 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBIPC_IPC_H__ |
#define __LIBIPC_IPC_H__ |
#include <kernel/ipc/ipc.h> |
#include <libc.h> |
#include <types.h> |
typedef sysarg_t ipcarg_t; |
typedef sysarg_t ipc_data_t[IPC_CALL_LEN]; |
typedef struct { |
unsigned long long taskid; |
ipc_data_t data; |
}ipc_call_t; |
typedef sysarg_t ipc_callid_t; |
typedef void (* ipc_async_callback_t)(void *private, |
int retval, |
ipc_data_t *data); |
#define ipc_call_sync_2(phoneid, method, arg1, arg2, res1, res2) ipc_call_sync_3((phoneid), (method), (arg1), (arg2), 0, (res1), (res2), 0) |
extern int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t arg2, ipcarg_t arg3, |
ipcarg_t *result1, ipcarg_t *result2, |
ipcarg_t *result3); |
extern int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t *result); |
extern ipc_callid_t ipc_wait_for_call(ipc_call_t *data, int flags); |
extern void ipc_answer(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
ipcarg_t arg2); |
#define ipc_call_async(phoneid,method,arg1,private, callback) (ipc_call_async_2(phoneid, method, arg1, 0, private, callback)) |
void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t arg2, void *private, |
ipc_async_callback_t callback); |
int ipc_connect_to_me(int phoneid, int arg1, int arg2, |
unsigned long long *taskid); |
#endif |
/uspace/trunk/libipc/include/ns.h |
---|
0,0 → 1,35 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIBIPC__NS_H__ |
#define __LIBIPC__NS_H__ |
#define NS_PING 1024 |
#define NS_PING_SVC 1025 |
#endif |
/uspace/trunk/libipc/generic/ipc.c |
---|
0,0 → 1,247 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <ipc.h> |
#include <libc.h> |
#include <malloc.h> |
#include <errno.h> |
#include <list.h> |
#include <stdio.h> |
#include <unistd.h> |
/** Structure used for keeping track of sent async msgs |
* and queing unsent msgs |
* |
*/ |
typedef struct { |
link_t list; |
ipc_async_callback_t callback; |
void *private; |
union { |
ipc_callid_t callid; |
struct { |
int phoneid; |
ipc_data_t data; |
} msg; |
}u; |
} async_call_t; |
LIST_INITIALIZE(dispatched_calls); |
LIST_INITIALIZE(queued_calls); |
int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t *result) |
{ |
ipc_data_t resdata; |
int callres; |
callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1, |
(sysarg_t)&resdata); |
if (callres) |
return callres; |
if (result) |
*result = IPC_GET_ARG1(resdata); |
return IPC_GET_RETVAL(resdata); |
} |
int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t arg2, ipcarg_t arg3, |
ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3) |
{ |
ipc_data_t data; |
int callres; |
IPC_SET_METHOD(data, method); |
IPC_SET_ARG1(data, arg1); |
IPC_SET_ARG2(data, arg2); |
IPC_SET_ARG3(data, arg3); |
callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data, |
(sysarg_t)&data); |
if (callres) |
return callres; |
if (result1) |
*result1 = IPC_GET_ARG1(data); |
if (result2) |
*result2 = IPC_GET_ARG2(data); |
if (result3) |
*result3 = IPC_GET_ARG3(data); |
return IPC_GET_RETVAL(data); |
} |
/** Syscall to send asynchronous message */ |
static ipc_callid_t _ipc_call_async(int phoneid, ipc_data_t *data) |
{ |
return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data); |
} |
/** Send asynchronous message |
* |
* - if fatal error, call callback handler with proper error code |
* - if message cannot be temporarily sent, add to queue |
*/ |
void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1, |
ipcarg_t arg2, void *private, |
ipc_async_callback_t callback) |
{ |
async_call_t *call; |
ipc_callid_t callid; |
call = malloc(sizeof(*call)); |
if (!call) { |
callback(private, ENOMEM, NULL); |
return; |
} |
callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2); |
if (callid == IPC_CALLRET_FATAL) { |
/* Call asynchronous handler with error code */ |
callback(private, ENOENT, NULL); |
free(call); |
return; |
} |
call->callback = callback; |
call->private = private; |
if (callid == IPC_CALLRET_TEMPORARY) { |
/* Add asynchronous call to queue of non-dispatched async calls */ |
call->u.msg.phoneid = phoneid; |
IPC_SET_METHOD(call->u.msg.data, method); |
IPC_SET_ARG1(call->u.msg.data, arg1); |
IPC_SET_ARG2(call->u.msg.data, arg2); |
list_append(&call->list, &queued_calls); |
return; |
} |
call->u.callid = callid; |
/* Add call to list of dispatched calls */ |
list_append(&call->list, &dispatched_calls); |
} |
/** Send answer to a received call */ |
void ipc_answer(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1, |
ipcarg_t arg2) |
{ |
__SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2); |
} |
/** Call syscall function sys_ipc_wait_for_call */ |
static inline ipc_callid_t _ipc_wait_for_call(ipc_call_t *call, int flags) |
{ |
return __SYSCALL3(SYS_IPC_WAIT, (sysarg_t)&call->data, |
(sysarg_t)&call->taskid, flags); |
} |
/** Try to dispatch queed calls from async queue */ |
static void try_dispatch_queued_calls(void) |
{ |
async_call_t *call; |
ipc_callid_t callid; |
while (!list_empty(&queued_calls)) { |
call = list_get_instance(queued_calls.next, async_call_t, |
list); |
callid = _ipc_call_async(call->u.msg.phoneid, |
&call->u.msg.data); |
if (callid == IPC_CALLRET_TEMPORARY) |
break; |
list_remove(&call->list); |
if (callid == IPC_CALLRET_FATAL) { |
call->callback(call->private, ENOENT, NULL); |
free(call); |
} else { |
call->u.callid = callid; |
list_append(&call->list, &dispatched_calls); |
} |
} |
} |
/** Handle received answer |
* |
* TODO: Make it use hash table |
* |
* @param callid Callid (with first bit set) of the answered call |
*/ |
static void handle_answer(ipc_callid_t callid, ipc_data_t *data) |
{ |
link_t *item; |
async_call_t *call; |
callid &= ~IPC_CALLID_ANSWERED; |
for (item = dispatched_calls.next; item != &dispatched_calls; |
item = item->next) { |
call = list_get_instance(item, async_call_t, list); |
if (call->u.callid == callid) { |
list_remove(&call->list); |
call->callback(call->private, |
IPC_GET_RETVAL(*data), |
data); |
return; |
} |
} |
printf("Received unidentified answer: %P!!!\n", callid); |
} |
/** Wait for IPC call and return |
* |
* - dispatch ASYNC reoutines in the background |
* @param data Space where the message is stored |
* @return Callid or 0 if nothing available and started with |
* IPC_WAIT_NONBLOCKING |
*/ |
ipc_callid_t ipc_wait_for_call(ipc_call_t *call, int flags) |
{ |
ipc_callid_t callid; |
do { |
try_dispatch_queued_calls(); |
callid = _ipc_wait_for_call(call, flags); |
/* Handle received answers */ |
if (callid & IPC_CALLID_ANSWERED) |
handle_answer(callid, &call->data); |
} while (callid & IPC_CALLID_ANSWERED); |
return callid; |
} |
/** Ask destination to do a callback connection */ |
int ipc_connect_to_me(int phoneid, int arg1, int arg2, |
unsigned long long *taskid) |
{ |
return __SYSCALL4(SYS_IPC_CONNECT_TO_ME, phoneid, arg1, arg2, |
(sysarg_t) taskid); |
} |
/uspace/trunk/libipc/Makefile |
---|
0,0 → 1,73 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Common compiler flags |
# |
LIBC_PREFIX = ../libc |
## Setup toolchain |
# |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -Iinclude -I../libadt/include -I../libc/include |
## Sources |
# |
GENERIC_SOURCES = \ |
generic/ipc.c |
ARCH_SOURCES = |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
.PHONY: all clean depend |
all: libipc.a |
-include Makefile.depend |
clean: |
-rm -f libipc.a Makefile.depend |
find generic/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(ARCH_SOURCES) $(GENERIC_SOURCES) > Makefile.depend |
libipc.a: depend $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
$(AR) rc libipc.a $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/init/init.c |
---|
0,0 → 1,168 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include "version.h" |
#include <ipc.h> |
#include <stdio.h> |
#include <unistd.h> |
#include <stdlib.h> |
#include <ns.h> |
/* |
static void test_printf(void) |
{ |
printf("Simple text.\n"); |
printf("Now insert '%s' string.\n","this"); |
printf("We are brave enought to print numbers like %%d = '%d'\n", 0x123456); |
printf("And now... '%b' byte! '%w' word! '%W' Word! \n", 0x12, 0x1234, 0x1234); |
printf(" '%Q' Q! Another '%q' q! \n", 0x1234567887654321ll, 0x1234567887654321ll); |
printf(" '%P' with 64bit value and '%p' with 32 bit value. \n", 0x1234567887654321ll, 0x12345678 ); |
printf("Thats all, folks!\n"); |
} |
*/ |
extern char _heap; |
static void test_mremap(void) |
{ |
printf("Writing to good memory\n"); |
mremap(&_heap, 120000, 0); |
printf("%P\n", ((char *)&_heap)); |
printf("%P\n", ((char *)&_heap) + 80000); |
*(((char *)&_heap) + 80000) = 10; |
printf("Making small\n"); |
mremap(&_heap, 16000, 0); |
printf("Failing..\n"); |
*((&_heap) + 80000) = 10; |
printf("memory done\n"); |
} |
/* |
static void test_sbrk(void) |
{ |
printf("Writing to good memory\n"); |
printf("Got: %P\n", sbrk(120000)); |
printf("%P\n", ((char *)&_heap)); |
printf("%P\n", ((char *)&_heap) + 80000); |
*(((char *)&_heap) + 80000) = 10; |
printf("Making small, got: %P\n",sbrk(-120000)); |
printf("Testing access to heap\n"); |
_heap = 10; |
printf("Failing..\n"); |
*((&_heap) + 80000) = 10; |
printf("memory done\n"); |
} |
*/ |
/* |
static void test_malloc(void) |
{ |
char *data; |
data = malloc(10); |
printf("Heap: %P, data: %P\n", &_heap, data); |
data[0] = 'a'; |
free(data); |
} |
*/ |
static void test_ping(void) |
{ |
ipcarg_t result; |
int retval; |
retval = ipc_call_sync(PHONE_NS, NS_PING, 0xbeef,&result); |
printf("Retval: %d - received: %P\n", retval, result); |
} |
static void got_answer(void *private, int retval, ipc_data_t *data) |
{ |
printf("Retval: %d...%s...%X, %X\n", retval, private, |
IPC_GET_ARG1(*data), IPC_GET_ARG2(*data)); |
} |
static void test_async_ipc(void) |
{ |
ipc_call_t data; |
int i; |
printf("Sending ping\n"); |
ipc_call_async_2(PHONE_NS, NS_PING, 1, 0xbeefbee2, |
"Pong1", got_answer); |
ipc_call_async_2(PHONE_NS, NS_PING, 2, 0xbeefbee4, |
"Pong2", got_answer); |
ipc_call_async_2(PHONE_NS, NS_PING, 3, 0xbeefbee4, |
"Pong3", got_answer); |
ipc_call_async_2(PHONE_NS, NS_PING, 4, 0xbeefbee4, |
"Pong4", got_answer); |
ipc_call_async_2(PHONE_NS, NS_PING, 5, 0xbeefbee4, |
"Pong5", got_answer); |
ipc_call_async_2(PHONE_NS, NS_PING, 6, 0xbeefbee4, |
"Pong6", got_answer); |
printf("Waiting forever...\n"); |
for (i=0; i<100;i++) |
printf("."); |
printf("\n"); |
ipc_wait_for_call(&data, NULL); |
printf("Received call???\n"); |
} |
static void got_answer_2(void *private, int retval, ipc_data_t *data) |
{ |
printf("Pong\n"); |
} |
static void test_advanced_ipc(void) |
{ |
int res; |
unsigned long long taskid; |
ipc_callid_t callid; |
ipc_call_t data; |
printf("Asking 0 to connect to me...\n"); |
res = ipc_connect_to_me(0, 1, 2, &taskid); |
printf("Result: %d - taskid: %Q\n", res, taskid); |
// while (1) { |
printf("----------------\n"); |
ipc_call_async(PHONE_NS, NS_PING_SVC, 0, "prov", |
got_answer_2); |
callid = ipc_wait_for_call(&data, NULL); |
printf("Received ping\n"); |
ipc_answer(callid, 0, 0, 0); |
// } |
callid = ipc_wait_for_call(&data, NULL); |
} |
int main(int argc, char *argv[]) |
{ |
version_print(); |
// test_ping(); |
// test_async_ipc(); |
test_advanced_ipc(); |
return 0; |
} |
/uspace/trunk/init/Makefile |
---|
0,0 → 1,75 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Setup toolchain |
# |
LIBC_PREFIX = ../libc |
LIBIPC_PREFIX = ../libipc |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -I../libipc/include |
LIBS = $(LIBIPC_PREFIX)/libipc.a $(LIBC_PREFIX)/libc.a |
## Sources |
# |
OUTPUT = init |
SOURCES = \ |
init.c \ |
version.c |
OBJECTS := $(addsuffix .o,$(basename $(SOURCES))) |
.PHONY: all clean depend disasm |
all: $(OUTPUT) disasm |
-include Makefile.depend |
clean: |
-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm Makefile.depend |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(SOURCES) > Makefile.depend |
$(OUTPUT): $(OBJECTS) $(LIBS) |
$(LD) -T $(LIBC_PREFIX)/arch/$(ARCH)/_link.ld $(OBJECTS) $(LIBS) $(LFLAGS) -o $@ -Map $(OUTPUT).map |
disasm: |
$(OBJDUMP) -d $(OUTPUT) >$(OUTPUT).disasm |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/init/version.c |
---|
0,0 → 1,38 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <unistd.h> |
#include <stdio.h> |
#include "version.h" |
/** Print version information. */ |
void version_print(void) |
{ |
puts("HelenOS init"); |
puts("Copyright (C) 2006 HelenOS project"); |
} |
/uspace/trunk/init/init.h |
---|
0,0 → 1,34 |
/* |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __INIT_H__ |
#define __INIT_H__ |
#include "version.h" |
#endif |
/uspace/trunk/init/version.h |
---|
0,0 → 1,34 |
/* |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __VERSION_H__ |
#define __VERSION_H__ |
extern void version_print(void); |
#endif |
/uspace/trunk/Makefile |
---|
0,0 → 1,72 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Include configuration |
# |
-include Makefile.config |
DIRS = \ |
softint \ |
softfloat \ |
libc \ |
libipc \ |
libadt \ |
init \ |
ns |
BUILDS := $(addsuffix .build,$(DIRS)) |
CLEANS := $(addsuffix .clean,$(DIRS)) |
.PHONY: all config build $(BUILDS) $(CLEANS) clean distclean |
all: |
tools/config.py default $(NARCH) |
ifdef NARCH |
ifneq ($(ARCH), $(NARCH)) |
$(MAKE) -C . clean |
endif |
endif |
$(MAKE) -C . build |
config: |
tools/config.py |
build: $(BUILDS) |
clean: $(CLEANS) |
find $(SOURCES) -name '*.o' -follow -exec rm \{\} \; |
distclean: clean |
-rm Makefile.config |
$(CLEANS): |
$(MAKE) -C $(basename $@) clean ARCH=$(ARCH) |
$(BUILDS): |
$(MAKE) -C $(basename $@) all ARCH=$(ARCH) COMPILER=$(COMPILER) |
/uspace/trunk/libadt/include/list.h |
---|
0,0 → 1,185 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __LIST_H__ |
#define __LIST_H__ |
#include<unistd.h> |
#ifndef true |
# define true 1 |
#endif |
#ifndef false |
# define false 0 |
#endif |
typedef struct link link_t; |
/** Doubly linked list head and link type. */ |
struct link { |
link_t *prev; /**< Pointer to the previous item in the list. */ |
link_t *next; /**< Pointer to the next item in the list. */ |
}; |
/** Declare and initialize statically allocated list. |
* |
* @param name Name of the new statically allocated list. |
*/ |
#define LIST_INITIALIZE(name) link_t name = { .prev = &name, .next = &name } |
/** Initialize doubly-linked circular list link |
* |
* Initialize doubly-linked list link. |
* |
* @param link Pointer to link_t structure to be initialized. |
*/ |
static inline void link_initialize(link_t *link) |
{ |
link->prev = NULL; |
link->next = NULL; |
} |
/** Initialize doubly-linked circular list |
* |
* Initialize doubly-linked circular list. |
* |
* @param head Pointer to link_t structure representing head of the list. |
*/ |
static inline void list_initialize(link_t *head) |
{ |
head->prev = head; |
head->next = head; |
} |
/** Add item to the beginning of doubly-linked circular list |
* |
* Add item to the beginning of doubly-linked circular list. |
* |
* @param link Pointer to link_t structure to be added. |
* @param head Pointer to link_t structure representing head of the list. |
*/ |
static inline void list_prepend(link_t *link, link_t *head) |
{ |
link->next = head->next; |
link->prev = head; |
head->next->prev = link; |
head->next = link; |
} |
/** Add item to the end of doubly-linked circular list |
* |
* Add item to the end of doubly-linked circular list. |
* |
* @param link Pointer to link_t structure to be added. |
* @param head Pointer to link_t structure representing head of the list. |
*/ |
static inline void list_append(link_t *link, link_t *head) |
{ |
link->prev = head->prev; |
link->next = head; |
head->prev->next = link; |
head->prev = link; |
} |
/** Remove item from doubly-linked circular list |
* |
* Remove item from doubly-linked circular list. |
* |
* @param link Pointer to link_t structure to be removed from the list it is contained in. |
*/ |
static inline void list_remove(link_t *link) |
{ |
link->next->prev = link->prev; |
link->prev->next = link->next; |
link_initialize(link); |
} |
/** Query emptiness of doubly-linked circular list |
* |
* Query emptiness of doubly-linked circular list. |
* |
* @param head Pointer to link_t structure representing head of the list. |
*/ |
static inline int list_empty(link_t *head) |
{ |
return head->next == head ? true : false; |
} |
/** Split or concatenate headless doubly-linked circular list |
* |
* Split or concatenate headless doubly-linked circular list. |
* |
* Note that the algorithm works both directions: |
* concatenates splitted lists and splits concatenated lists. |
* |
* @param part1 Pointer to link_t structure leading the first (half of the headless) list. |
* @param part2 Pointer to link_t structure leading the second (half of the headless) list. |
*/ |
static inline void headless_list_split_or_concat(link_t *part1, link_t *part2) |
{ |
link_t *hlp; |
part1->prev->next = part2; |
part2->prev->next = part1; |
hlp = part1->prev; |
part1->prev = part2->prev; |
part2->prev = hlp; |
} |
/** Split headless doubly-linked circular list |
* |
* Split headless doubly-linked circular list. |
* |
* @param part1 Pointer to link_t structure leading the first half of the headless list. |
* @param part2 Pointer to link_t structure leading the second half of the headless list. |
*/ |
static inline void headless_list_split(link_t *part1, link_t *part2) |
{ |
headless_list_split_or_concat(part1, part2); |
} |
/** Concatenate two headless doubly-linked circular lists |
* |
* Concatenate two headless doubly-linked circular lists. |
* |
* @param part1 Pointer to link_t structure leading the first headless list. |
* @param part2 Pointer to link_t structure leading the second headless list. |
*/ |
static inline void headless_list_concat(link_t *part1, link_t *part2) |
{ |
headless_list_split_or_concat(part1, part2); |
} |
#define list_get_instance(link,type,member) (type *)(((char *)(link))-((char *)&(((type *)NULL)->member))) |
extern int list_member(const link_t *link, const link_t *head); |
extern void list_concat(link_t *head1, link_t *head2); |
#endif |
/uspace/trunk/libadt/include/hash_table.h |
---|
0,0 → 1,80 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __HASH_TABLE_H__ |
#define __HASH_TABLE_H__ |
#include <list.h> |
#include <unistd.h> |
typedef unsigned long hash_count_t; |
typedef unsigned long hash_index_t; |
typedef struct hash_table hash_table_t; |
typedef struct hash_table_operations hash_table_operations_t; |
/** Hash table structure. */ |
struct hash_table { |
link_t *entry; |
hash_count_t entries; |
hash_count_t max_keys; |
hash_table_operations_t *op; |
}; |
/** Set of operations for hash table. */ |
struct hash_table_operations { |
/** Hash function. |
* |
* @param key Array of keys needed to compute hash index. All keys must be passed. |
* |
* @return Index into hash table. |
*/ |
hash_index_t (* hash)(unsigned long key[]); |
/** Hash table item comparison function. |
* |
* @param key Array of keys that will be compared with item. It is not necessary to pass all keys. |
* |
* @return true if the keys match, false otherwise. |
*/ |
int (*compare)(unsigned long key[], hash_count_t keys, link_t *item); |
/** Hash table item removal callback. |
* |
* @param item Item that was removed from the hash table. |
*/ |
void (*remove_callback)(link_t *item); |
}; |
#define hash_table_get_instance(item, type, member) list_get_instance((item), type, member) |
extern int hash_table_create(hash_table_t *h, hash_count_t m, hash_count_t max_keys, hash_table_operations_t *op); |
extern void hash_table_insert(hash_table_t *h, unsigned long key[], link_t *item); |
extern link_t *hash_table_find(hash_table_t *h, unsigned long key[]); |
extern void hash_table_remove(hash_table_t *h, unsigned long key[], hash_count_t keys); |
#endif |
/uspace/trunk/libadt/include/fifo.h |
---|
0,0 → 1,115 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/* |
* This implementation of FIFO stores values in an array |
* (static or dynamic). As such, these FIFOs have upper bound |
* on number of values they can store. Push and pop operations |
* are done via accessing the array through head and tail indices. |
* Because of better operation ordering in fifo_pop(), the access |
* policy for these two indices is to 'increment (mod size of FIFO) |
* and use'. |
*/ |
#ifndef __FIFO_H__ |
#define __FIFO_H__ |
#include <malloc.h> |
typedef unsigned long fifo_count_t; |
typedef unsigned long fifo_index_t; |
/** Create and initialize static FIFO. |
* |
* FIFO is allocated statically. |
* This macro is suitable for creating smaller FIFOs. |
* |
* @param name Name of FIFO. |
* @param t Type of values stored in FIFO. |
* @param itms Number of items that can be stored in FIFO. |
*/ |
#define FIFO_INITIALIZE_STATIC(name, t, itms) \ |
struct { \ |
t fifo[(itms)]; \ |
fifo_count_t items; \ |
fifo_index_t head; \ |
fifo_index_t tail; \ |
} name = { \ |
.items = (itms), \ |
.head = 0, \ |
.tail = 0 \ |
} |
/** Create and prepare dynamic FIFO. |
* |
* FIFO is allocated dynamically. |
* This macro is suitable for creating larger FIFOs. |
* |
* @param name Name of FIFO. |
* @param t Type of values stored in FIFO. |
* @param itms Number of items that can be stored in FIFO. |
*/ |
#define FIFO_INITIALIZE_DYNAMIC(name, t, itms) \ |
struct { \ |
t *fifo; \ |
fifo_count_t items; \ |
fifo_index_t head; \ |
fifo_index_t tail; \ |
} name = { \ |
.fifo = NULL, \ |
.items = (itms), \ |
.head = 0, \ |
.tail = 0 \ |
} |
/** Pop value from head of FIFO. |
* |
* @param name FIFO name. |
* |
* @return Leading value in FIFO. |
*/ |
#define fifo_pop(name) \ |
name.fifo[name.head = (name.head + 1) < name.items ? (name.head + 1) : 0] |
/** Push value to tail of FIFO. |
* |
* @param name FIFO name. |
* @param value Value to be appended to FIFO. |
* |
*/ |
#define fifo_push(name, value) \ |
name.fifo[name.tail = (name.tail + 1) < name.items ? (name.tail + 1) : 0] = (value) |
/** Allocate memory for dynamic FIFO. |
* |
* @param name FIFO name. |
*/ |
#define fifo_create(name) \ |
name.fifo = malloc(sizeof(*name.fifo) * name.items) |
#endif |
/uspace/trunk/libadt/generic/hash_table.c |
---|
0,0 → 1,174 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/* |
* This is an implementation of generic chained hash table. |
*/ |
#include <hash_table.h> |
#include <list.h> |
#include <unistd.h> |
#include <malloc.h> |
#include <assert.h> |
#include <stdio.h> |
#include <string.h> |
/** Create chained hash table. |
* |
* @param h Hash table structure. Will be initialized by this call. |
* @param m Number of slots in the hash table. |
* @param max_keys Maximal number of keys needed to identify an item. |
* @param op Hash table operations structure. |
* @return true on success |
*/ |
int hash_table_create(hash_table_t *h, hash_count_t m, hash_count_t max_keys, hash_table_operations_t *op) |
{ |
hash_count_t i; |
assert(h); |
assert(op && op->hash && op->compare); |
assert(max_keys > 0); |
h->entry = malloc(m * sizeof(link_t *)); |
if (!h->entry) { |
printf("cannot allocate memory for hash table\n"); |
return false; |
} |
memset((void *) h->entry, 0, m * sizeof(link_t *)); |
for (i = 0; i < m; i++) |
list_initialize(&h->entry[i]); |
h->entries = m; |
h->max_keys = max_keys; |
h->op = op; |
return true; |
} |
/** Insert item into hash table. |
* |
* @param h Hash table. |
* @param hey Array of all keys necessary to compute hash index. |
* @param item Item to be inserted into the hash table. |
*/ |
void hash_table_insert(hash_table_t *h, unsigned long key[], link_t *item) |
{ |
hash_index_t chain; |
assert(item); |
assert(h && h->op && h->op->hash && h->op->compare); |
chain = h->op->hash(key); |
assert(chain < h->entries); |
list_append(item, &h->entry[chain]); |
} |
/** Search hash table for an item matching keys. |
* |
* @param h Hash table. |
* @param key Array of all keys needed to compute hash index. |
* |
* @return Matching item on success, NULL if there is no such item. |
*/ |
link_t *hash_table_find(hash_table_t *h, unsigned long key[]) |
{ |
link_t *cur; |
hash_index_t chain; |
assert(h && h->op && h->op->hash && h->op->compare); |
chain = h->op->hash(key); |
assert(chain < h->entries); |
/* |
* The hash table is not redundant. |
* Check if the keys are not in place already. |
*/ |
for (cur = h->entry[chain].next; cur != &h->entry[chain]; cur = cur->next) { |
if (h->op->compare(key, h->max_keys, cur)) { |
/* |
* The entry is there. |
*/ |
return cur; |
} |
} |
return NULL; |
} |
/** Remove all matching items from hash table. |
* |
* For each removed item, h->remove_callback() is called. |
* |
* @param h Hash table. |
* @param key Array of keys that will be compared against items of the hash table. |
* @param keys Number of keys in the 'key' array. |
*/ |
void hash_table_remove(hash_table_t *h, unsigned long key[], hash_count_t keys) |
{ |
hash_index_t chain; |
link_t *cur; |
assert(h && h->op && h->op->hash && h->op->compare && h->op->remove_callback); |
assert(keys <= h->max_keys); |
if (keys == h->max_keys) { |
/* |
* All keys are known, hash_table_find() can be used to find the entry. |
*/ |
cur = hash_table_find(h, key); |
if (cur) { |
list_remove(cur); |
h->op->remove_callback(cur); |
} |
return; |
} |
/* |
* Fewer keys were passed. |
* Any partially matching entries are to be removed. |
*/ |
for (chain = 0; chain < h->entries; chain++) { |
for (cur = h->entry[chain].next; cur != &h->entry[chain]; cur = cur->next) { |
if (h->op->compare(key, keys, cur)) { |
link_t *hlp; |
hlp = cur; |
cur = cur->prev; |
list_remove(hlp); |
h->op->remove_callback(hlp); |
continue; |
} |
} |
} |
} |
/uspace/trunk/libadt/generic/list.c |
---|
0,0 → 1,80 |
/* |
* Copyright (C) 2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <list.h> |
/** Check for membership |
* |
* Check whether link is contained in the list head. |
* The membership is defined as pointer equivalence. |
* |
* @param link Item to look for. |
* @param head List to look in. |
* |
* @return true if link is contained in head, false otherwise. |
* |
*/ |
int list_member(const link_t *link, const link_t *head) |
{ |
int found = false; |
link_t *hlp = head->next; |
while (hlp != head) { |
if (hlp == link) { |
found = true; |
break; |
} |
hlp = hlp->next; |
} |
return found; |
} |
/** Concatenate two lists |
* |
* Concatenate lists head1 and head2, producing a single |
* list head1 containing items from both (in head1, head2 |
* order) and empty list head2. |
* |
* @param head1 First list and concatenated output |
* @param head2 Second list and empty output. |
* |
*/ |
void list_concat(link_t *head1, link_t *head2) |
{ |
if (list_empty(head2)) |
return; |
head2->next->prev = head1->prev; |
head2->prev->next = head1; |
head1->prev->next = head2->next; |
head1->prev = head2->prev; |
list_initialize(head2); |
} |
/uspace/trunk/libadt/Makefile |
---|
0,0 → 1,72 |
# |
# Copyright (C) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Common compiler flags |
# |
LIBC_PREFIX = ../libc |
## Setup toolchain |
# |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -Iinclude |
## Sources |
# |
GENERIC_SOURCES = \ |
generic/list.c \ |
generic/hash_table.c |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
.PHONY: all clean depend |
all: libadt.a |
-include Makefile.depend |
clean: |
-rm -f libadt.a Makefile.depend |
find generic/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(GENERIC_SOURCES) > Makefile.depend |
libadt.a: depend $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
$(AR) rc libadt.a $(ARCH_OBJECTS) $(GENERIC_OBJECTS) |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/uspace/trunk/uspace.config |
---|
0,0 → 1,15 |
## General configuration directives |
# Architecture |
@ "ia32" Intel IA-32 |
@ "amd64" AMD64/Intel EM64T |
@ "ia64" Intel IA-64 |
@ "mips32" MIPS 32-bit Little Endian |
@ "mips32eb" MIPS 32-bit Big Endian |
! ARCH (choice) |
# IA32 Compiler |
@ "cross" Cross-compiler |
@ "native" Native |
! [ARCH=ia32] IA32_COMPILER (choice) |
% [ARCH=ia32] SAVEAS IA32_COMPILER COMPILER |
/uspace/trunk/tools/config.py |
---|
0,0 → 1,480 |
#!/usr/bin/env python |
""" |
user space configuration script |
""" |
import sys |
import os |
import re |
import commands |
INPUT = 'uspace.config' |
OUTPUT = 'Makefile.config' |
TMPOUTPUT = 'Makefile.config.tmp' |
class DefaultDialog: |
"Wrapper dialog that tries to return default values" |
def __init__(self, dlg): |
self.dlg = dlg |
def set_title(self,text): |
self.dlg.set_title(text) |
def yesno(self, text, default=None): |
if default is not None: |
return default |
return self.dlg.yesno(text, default) |
def noyes(self, text, default=None): |
if default is not None: |
return default |
return self.dlg.noyes(text, default) |
def choice(self, text, choices, defopt=None): |
if defopt is not None: |
return choices[defopt][0] |
return self.dlg.choice(text, choices, defopt) |
class NoDialog: |
def __init__(self): |
self.printed = None |
self.title = 'HelenOS Configuration' |
def print_title(self): |
if not self.printed: |
sys.stdout.write("\n*** %s ***\n" % self.title) |
self.printed = True |
def set_title(self, text): |
self.title = text |
self.printed = False |
def noyes(self, text, default=None): |
if not default: |
default = 'n' |
return self.yesno(text, default) |
def yesno(self, text, default=None): |
self.print_title() |
if default != 'n': |
default = 'y' |
while 1: |
sys.stdout.write("%s (y/n)[%s]: " % (text,default)) |
inp = sys.stdin.readline() |
if not inp: |
raise EOFError |
inp = inp.strip().lower() |
if not inp: |
return default |
if inp == 'y': |
return 'y' |
elif inp == 'n': |
return 'n' |
def _print_choice(self, text, choices, defopt): |
sys.stdout.write('%s:\n' % text) |
for i,(text,descr) in enumerate(choices): |
sys.stdout.write('\t%2d. %s\n' % (i, descr)) |
if defopt is not None: |
sys.stdout.write('Enter choice number[%d]: ' % defopt) |
else: |
sys.stdout.write('Enter choice number: ') |
def menu(self, text, choices, button, defopt=None): |
self.title = 'Main menu' |
menu = [] |
for key, descr in choices: |
txt = key + (45-len(key))*' ' + ': ' + descr |
menu.append((key, txt)) |
return self.choice(text, [button] + menu) |
def choice(self, text, choices, defopt=None): |
self.print_title() |
while 1: |
self._print_choice(text, choices, defopt) |
inp = sys.stdin.readline() |
if not inp: |
raise EOFError |
if not inp.strip(): |
if defopt is not None: |
return choices[defopt][0] |
continue |
try: |
number = int(inp.strip()) |
except ValueError: |
continue |
if number < 0 or number >= len(choices): |
continue |
return choices[number][0] |
class Dialog(NoDialog): |
def __init__(self): |
NoDialog.__init__(self) |
self.dlgcmd = os.environ.get('DIALOG','dialog') |
self.title = '' |
self.backtitle = 'HelenOS User Space Configuration' |
if os.system('%s --print-maxsize >/dev/null 2>&1' % self.dlgcmd) != 0: |
raise NotImplementedError |
def set_title(self,text): |
self.title = text |
def calldlg(self,*args,**kw): |
"Wrapper for calling 'dialog' program" |
indesc, outdesc = os.pipe() |
pid = os.fork() |
if not pid: |
os.close(2) |
os.dup(outdesc) |
os.close(indesc) |
dlgargs = [self.dlgcmd,'--title',self.title, |
'--backtitle', self.backtitle] |
for key,val in kw.items(): |
dlgargs.append('--'+key) |
dlgargs.append(val) |
dlgargs += args |
os.execlp(self.dlgcmd,*dlgargs) |
os.close(outdesc) |
try: |
errout = os.fdopen(indesc,'r') |
data = errout.read() |
errout.close() |
pid,status = os.wait() |
except: |
os.system('reset') # Reset terminal |
raise |
if not os.WIFEXITED(status): |
os.system('reset') # Reset terminal |
raise EOFError |
status = os.WEXITSTATUS(status) |
if status == 255: |
raise EOFError |
return status,data |
def yesno(self, text, default=None): |
if text[-1] not in ('?',':'): |
text = text + ':' |
width = '50' |
height = '5' |
if len(text) < 48: |
text = ' '*int(((48-len(text))/2)) + text |
else: |
width = '0' |
height = '0' |
if default == 'n': |
res,data = self.calldlg('--defaultno','--yesno',text,height,width) |
else: |
res,data = self.calldlg('--yesno',text,height,width) |
if res == 0: |
return 'y' |
return 'n' |
def menu(self, text, choices, button, defopt=None): |
self.title = 'Main menu' |
text = text + ':' |
width = '70' |
height = str(8 + len(choices)) |
args = [] |
for key,val in choices: |
args.append(key) |
args.append(val) |
kw = {} |
if defopt: |
kw['default-item'] = choices[defopt][0] |
res,data = self.calldlg('--ok-label','Change', |
'--extra-label',button[1], |
'--extra-button', |
'--menu',text,height,width, |
str(len(choices)),*args,**kw) |
if res == 3: |
return button[0] |
if res == 1: # Cancel |
sys.exit(1) |
elif res: |
print data |
raise EOFError |
return data |
def choice(self, text, choices, defopt=None): |
text = text + ':' |
width = '50' |
height = str(8 + len(choices)) |
args = [] |
for key,val in choices: |
args.append(key) |
args.append(val) |
kw = {} |
if defopt: |
kw['default-item'] = choices[defopt][0] |
res,data = self.calldlg('--nocancel','--menu',text,height,width, |
str(len(choices)),*args, **kw) |
if res: |
print data |
raise EOFError |
return data |
def read_defaults(fname,defaults): |
"Read saved values from last configuration run" |
f = file(fname,'r') |
for line in f: |
res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line) |
if res: |
defaults[res.group(1)] = res.group(2) |
f.close() |
def check_condition(text, defaults, asked_names): |
seen_vars = [ x[0] for x in asked_names ] |
ctype = 'cnf' |
if ')|' in text or '|(' in text: |
ctype = 'dnf' |
if ctype == 'cnf': |
conds = text.split('&') |
else: |
conds = text.split('|') |
for cond in conds: |
if cond.startswith('(') and cond.endswith(')'): |
cond = cond[1:-1] |
inside = check_inside(cond, defaults, ctype, seen_vars) |
if ctype == 'cnf' and not inside: |
return False |
if ctype == 'dnf' and inside: |
return True |
if ctype == 'cnf': |
return True |
return False |
def check_inside(text, defaults, ctype, seen_vars): |
""" |
Check that the condition specified on input line is True |
only CNF is supported |
""" |
if ctype == 'cnf': |
conds = text.split('|') |
else: |
conds = text.split('&') |
for cond in conds: |
res = re.match(r'^(.*?)(!?=)(.*)$', cond) |
if not res: |
raise RuntimeError("Invalid condition: %s" % cond) |
condname = res.group(1) |
oper = res.group(2) |
condval = res.group(3) |
if condname not in seen_vars: |
varval = '' |
## raise RuntimeError("Variable %s not defined before being asked." %\ |
## condname) |
elif not defaults.has_key(condname): |
raise RuntimeError("Condition var %s does not exist: %s" % \ |
(condname,text)) |
else: |
varval = defaults[condname] |
if ctype == 'cnf': |
if oper == '=' and condval == varval: |
return True |
if oper == '!=' and condval != varval: |
return True |
else: |
if oper== '=' and condval != varval: |
return False |
if oper== '!=' and condval == varval: |
return False |
if ctype=='cnf': |
return False |
return True |
def parse_config(input, output, dlg, defaults={}, askonly=None): |
"Parse configuration file and create Makefile.config on the fly" |
def ask_the_question(dialog): |
"Ask question based on the type of variables to ask" |
# This is quite a hack, this thingy is written just to |
# have access to local variables.. |
if vartype == 'y/n': |
return dialog.yesno(comment, default) |
elif vartype == 'n/y': |
return dialog.noyes(comment, default) |
elif vartype == 'choice': |
defopt = None |
if default is not None: |
for i,(key,val) in enumerate(choices): |
if key == default: |
defopt = i |
break |
return dialog.choice(comment, choices, defopt) |
else: |
raise RuntimeError("Bad method: %s" % vartype) |
f = file(input, 'r') |
outf = file(output, 'w') |
outf.write('#########################################\n') |
outf.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n') |
outf.write('#########################################\n\n') |
asked_names = [] |
comment = '' |
default = None |
choices = [] |
for line in f: |
if line.startswith('%'): |
res = re.match(r'^%\s*(?:\[(.*?)\])?\s*(.*)$', line) |
if not res: |
raise RuntimeError('Invalid command: %s' % line) |
if res.group(1): |
if not check_condition(res.group(1), defaults, |
asked_names): |
continue |
args = res.group(2).strip().split(' ') |
cmd = args[0].lower() |
args = args[1:] |
if cmd == 'saveas': |
outf.write('%s = %s\n' % (args[1],defaults[args[0]])) |
elif cmd == 'shellcmd': |
varname = args[0] |
args = args[1:] |
for i,arg in enumerate(args): |
if arg.startswith('$'): |
args[i] = defaults[arg[1:]] |
data,status = commands.getstatusoutput(' '.join(args)) |
if status: |
raise RuntimeError('Error running: %s' % ' '.join(args)) |
outf.write('%s = %s\n' % (varname,data.strip())) |
continue |
if line.startswith('!'): |
# Ask a question |
res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line) |
if not res: |
raise RuntimeError("Weird line: %s" % line) |
varname = res.group(2) |
vartype = res.group(3) |
default = defaults.get(varname,None) |
if res.group(1): |
if not check_condition(res.group(1), defaults, |
asked_names): |
if default is not None: |
outf.write('#!# %s = %s\n' % (varname, default)) |
# Clear cumulated values |
comment = '' |
default = None |
choices = [] |
continue |
asked_names.append((varname,comment)) |
if default is None or not askonly or askonly == varname: |
default = ask_the_question(dlg) |
else: |
default = ask_the_question(DefaultDialog(dlg)) |
outf.write('%s = %s\n' % (varname, default)) |
# Remeber the selected value |
defaults[varname] = default |
# Clear cumulated values |
comment = '' |
default = None |
choices = [] |
continue |
if line.startswith('@'): |
# Add new line into the 'choice array' |
res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line) |
if not res: |
raise RuntimeError("Bad line: %s" % line) |
if res.group(1): |
if not check_condition(res.group(1),defaults, |
asked_names): |
continue |
choices.append((res.group(2), res.group(3))) |
continue |
# All other things print to output file |
outf.write(line) |
if re.match(r'^#[^#]', line): |
# Last comment before question will be displayed to the user |
comment = line[1:].strip() |
elif line.startswith('## '): |
# Set title of the dialog window |
dlg.set_title(line[2:].strip()) |
outf.write('\n') |
outf.write('REVISION = %s\n' % commands.getoutput('svnversion . 2> /dev/null')) |
outf.write('TIMESTAMP = %s\n' % commands.getoutput('date "+%Y-%m-%d %H:%M:%S"')) |
outf.close() |
f.close() |
return asked_names |
def main(): |
defaults = {} |
try: |
dlg = Dialog() |
except NotImplementedError: |
dlg = NoDialog() |
if len(sys.argv) >= 2 and sys.argv[1]=='default': |
defmode = True |
else: |
defmode = False |
# Default run will update the configuration file |
# with newest options |
if os.path.exists(OUTPUT): |
read_defaults(OUTPUT, defaults) |
# Get ARCH from command line if specified |
if len(sys.argv) >= 3: |
defaults['ARCH'] = sys.argv[2] |
# Dry run only with defaults |
varnames = parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults) |
# If not in default mode, present selection of all possibilities |
if not defmode: |
defopt = 0 |
while 1: |
# varnames contains variable names that were in the |
# last question set |
choices = [ (x[1],defaults[x[0]]) for x in varnames ] |
res = dlg.menu('Configuration',choices,('save','Save'),defopt) |
if res == 'save': |
parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults) |
break |
# transfer description back to varname |
for i,(vname,descr) in enumerate(varnames): |
if res == descr: |
defopt = i |
break |
# Ask the user a simple question, produce output |
# as if the user answered all the other questions |
# with default answer |
varnames = parse_config(INPUT, TMPOUTPUT, dlg, defaults, |
askonly=varnames[i][0]) |
if os.path.exists(OUTPUT): |
os.unlink(OUTPUT) |
os.rename(TMPOUTPUT, OUTPUT) |
if not defmode and dlg.yesno('Rebuild user space?') == 'y': |
os.execlp('make','make','clean','build') |
if __name__ == '__main__': |
main() |
Property changes: |
Added: svn:executable |
+* |
\ No newline at end of property |