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Ignore whitespace Rev 3221 → Rev 3222

/trunk/uspace/srv/loader/interp.s
0,0 → 1,7
#
# Provide a string to be included in a special DT_INTERP header, even though
# this is a statically-linked executable. This will mark the binary as
# the program loader.
#
.section .interp , ""
.string "kernel"
/trunk/uspace/srv/loader/include/arch.h
0,0 → 1,45
/*
* Copyright (c) 2008 Jiri Svoboda
* 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.
*/
 
/** @addtogroup fs
* @{
*/
/** @file
* @brief
*/
 
#ifndef LOADER_ARCH_H_
#define LOADER_ARCH_H_
 
void program_run(void *entry_point, void *pcb);
 
#endif
 
/**
* @}
*/
/trunk/uspace/srv/loader/include/elf_load.h
0,0 → 1,83
/*
* Copyright (c) 2008 Jiri Svoboda
* 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.
*/
 
/** @addtogroup generic
* @{
*/
/** @file
* @brief ELF loader structures and public functions.
*/
 
#ifndef ELF_LOAD_H_
#define ELF_LOAD_H_
 
#include <arch/elf.h>
#include <sys/types.h>
#include <loader/pcb.h>
 
#include "elf.h"
 
/**
* Some data extracted from the headers are stored here
*/
typedef struct {
/** Entry point */
entry_point_t entry;
 
/** ELF interpreter name or NULL if statically-linked */
char *interp;
 
/** Pointer to the dynamic section */
void *dynamic;
} elf_info_t;
 
/**
* Holds information about an ELF binary being loaded.
*/
typedef struct {
/** Filedescriptor of the file from which we are loading */
int fd;
 
/** Difference between run-time addresses and link-time addresses */
uintptr_t bias;
 
/** A copy of the ELF file header */
elf_header_t *header;
 
/** Store extracted info here */
elf_info_t *info;
} elf_ld_t;
 
int elf_load_file(char *file_name, size_t so_bias, elf_info_t *info);
void elf_run(elf_info_t *info, pcb_t *pcb);
void elf_create_pcb(elf_info_t *info, pcb_t *pcb);
 
#endif
 
/** @}
*/
/trunk/uspace/srv/loader/include/elf.h
0,0 → 1,344
/*
* Copyright (c) 2006 Sergey Bondari
* 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.
*/
 
/** @addtogroup generic
* @{
*/
/** @file
*/
 
#ifndef ELF_H_
#define ELF_H_
 
#include <arch/elf.h>
#include <sys/types.h>
 
/**
* current ELF version
*/
#define EV_CURRENT 1
 
/**
* ELF types
*/
#define ET_NONE 0 /* No type */
#define ET_REL 1 /* Relocatable file */
#define ET_EXEC 2 /* Executable */
#define ET_DYN 3 /* Shared object */
#define ET_CORE 4 /* Core */
#define ET_LOPROC 0xff00 /* Processor specific */
#define ET_HIPROC 0xffff /* Processor specific */
 
/**
* ELF machine types
*/
#define EM_NO 0 /* No machine */
#define EM_SPARC 2 /* SPARC */
#define EM_386 3 /* i386 */
#define EM_MIPS 8 /* MIPS RS3000 */
#define EM_MIPS_RS3_LE 10 /* MIPS RS3000 LE */
#define EM_PPC 20 /* PPC32 */
#define EM_PPC64 21 /* PPC64 */
#define EM_ARM 40 /* ARM */
#define EM_SPARCV9 43 /* SPARC64 */
#define EM_IA_64 50 /* IA-64 */
#define EM_X86_64 62 /* AMD64/EMT64 */
 
/**
* ELF identification indexes
*/
#define EI_MAG0 0
#define EI_MAG1 1
#define EI_MAG2 2
#define EI_MAG3 3
#define EI_CLASS 4 /* File class */
#define EI_DATA 5 /* Data encoding */
#define EI_VERSION 6 /* File version */
#define EI_OSABI 7
#define EI_ABIVERSION 8
#define EI_PAD 9 /* Start of padding bytes */
#define EI_NIDENT 16 /* ELF identification table size */
 
/**
* ELF magic number
*/
#define ELFMAG0 0x7f
#define ELFMAG1 'E'
#define ELFMAG2 'L'
#define ELFMAG3 'F'
 
/**
* ELF file classes
*/
#define ELFCLASSNONE 0
#define ELFCLASS32 1
#define ELFCLASS64 2
 
/**
* ELF data encoding types
*/
#define ELFDATANONE 0
#define ELFDATA2LSB 1 /* Least significant byte first (little endian) */
#define ELFDATA2MSB 2 /* Most signigicant byte first (big endian) */
 
/**
* ELF error return codes
*/
#define EE_OK 0 /* No error */
#define EE_INVALID 1 /* Invalid ELF image */
#define EE_MEMORY 2 /* Cannot allocate address space */
#define EE_INCOMPATIBLE 3 /* ELF image is not compatible with current architecture */
#define EE_UNSUPPORTED 4 /* Non-supported ELF (e.g. dynamic ELFs) */
#define EE_IRRECOVERABLE 5
 
/**
* ELF section types
*/
#define SHT_NULL 0
#define SHT_PROGBITS 1
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
#define SHT_RELA 4
#define SHT_HASH 5
#define SHT_DYNAMIC 6
#define SHT_NOTE 7
#define SHT_NOBITS 8
#define SHT_REL 9
#define SHT_SHLIB 10
#define SHT_DYNSYM 11
#define SHT_LOOS 0x60000000
#define SHT_HIOS 0x6fffffff
#define SHT_LOPROC 0x70000000
#define SHT_HIPROC 0x7fffffff
#define SHT_LOUSER 0x80000000
#define SHT_HIUSER 0xffffffff
 
/**
* ELF section flags
*/
#define SHF_WRITE 0x1
#define SHF_ALLOC 0x2
#define SHF_EXECINSTR 0x4
#define SHF_TLS 0x400
#define SHF_MASKPROC 0xf0000000
 
/**
* Symbol binding
*/
#define STB_LOCAL 0
#define STB_GLOBAL 1
#define STB_WEAK 2
#define STB_LOPROC 13
#define STB_HIPROC 15
 
/**
* Symbol types
*/
#define STT_NOTYPE 0
#define STT_OBJECT 1
#define STT_FUNC 2
#define STT_SECTION 3
#define STT_FILE 4
#define STT_LOPROC 13
#define STT_HIPROC 15
 
/**
* Program segment types
*/
#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
 
/**
* Program segment attributes.
*/
#define PF_X 1
#define PF_W 2
#define PF_R 4
 
/**
* ELF data types
*
* These types are found to be identical in both 32-bit and 64-bit
* ELF object file specifications. They are the only types used
* in ELF header.
*/
typedef uint64_t elf_xword;
typedef int64_t elf_sxword;
typedef uint32_t elf_word;
typedef int32_t elf_sword;
typedef uint16_t elf_half;
 
/**
* 32-bit ELF data types.
*
* These types are specific for 32-bit format.
*/
typedef uint32_t elf32_addr;
typedef uint32_t elf32_off;
 
/**
* 64-bit ELF data types.
*
* These types are specific for 64-bit format.
*/
typedef uint64_t elf64_addr;
typedef uint64_t elf64_off;
 
/** ELF header */
struct elf32_header {
uint8_t e_ident[EI_NIDENT];
elf_half e_type;
elf_half e_machine;
elf_word e_version;
elf32_addr e_entry;
elf32_off e_phoff;
elf32_off e_shoff;
elf_word e_flags;
elf_half e_ehsize;
elf_half e_phentsize;
elf_half e_phnum;
elf_half e_shentsize;
elf_half e_shnum;
elf_half e_shstrndx;
};
struct elf64_header {
uint8_t e_ident[EI_NIDENT];
elf_half e_type;
elf_half e_machine;
elf_word e_version;
elf64_addr e_entry;
elf64_off e_phoff;
elf64_off e_shoff;
elf_word e_flags;
elf_half e_ehsize;
elf_half e_phentsize;
elf_half e_phnum;
elf_half e_shentsize;
elf_half e_shnum;
elf_half e_shstrndx;
};
 
/*
* ELF segment header.
* Segments headers are also known as program headers.
*/
struct elf32_segment_header {
elf_word p_type;
elf32_off p_offset;
elf32_addr p_vaddr;
elf32_addr p_paddr;
elf_word p_filesz;
elf_word p_memsz;
elf_word p_flags;
elf_word p_align;
};
struct elf64_segment_header {
elf_word p_type;
elf_word p_flags;
elf64_off p_offset;
elf64_addr p_vaddr;
elf64_addr p_paddr;
elf_xword p_filesz;
elf_xword p_memsz;
elf_xword p_align;
};
 
/*
* ELF section header
*/
struct elf32_section_header {
elf_word sh_name;
elf_word sh_type;
elf_word sh_flags;
elf32_addr sh_addr;
elf32_off sh_offset;
elf_word sh_size;
elf_word sh_link;
elf_word sh_info;
elf_word sh_addralign;
elf_word sh_entsize;
};
struct elf64_section_header {
elf_word sh_name;
elf_word sh_type;
elf_xword sh_flags;
elf64_addr sh_addr;
elf64_off sh_offset;
elf_xword sh_size;
elf_word sh_link;
elf_word sh_info;
elf_xword sh_addralign;
elf_xword sh_entsize;
};
 
/*
* ELF symbol table entry
*/
struct elf32_symbol {
elf_word st_name;
elf32_addr st_value;
elf_word st_size;
uint8_t st_info;
uint8_t st_other;
elf_half st_shndx;
};
struct elf64_symbol {
elf_word st_name;
uint8_t st_info;
uint8_t st_other;
elf_half st_shndx;
elf64_addr st_value;
elf_xword st_size;
};
 
#ifdef __32_BITS__
typedef struct elf32_header elf_header_t;
typedef struct elf32_segment_header elf_segment_header_t;
typedef struct elf32_section_header elf_section_header_t;
typedef struct elf32_symbol elf_symbol_t;
#endif
#ifdef __64_BITS__
typedef struct elf64_header elf_header_t;
typedef struct elf64_segment_header elf_segment_header_t;
typedef struct elf64_section_header elf_section_header_t;
typedef struct elf64_symbol elf_symbol_t;
#endif
 
extern char *elf_error(unsigned int rc);
 
#endif
 
/** @}
*/
/trunk/uspace/srv/loader/main.c
0,0 → 1,332
/*
* Copyright (c) 2008 Jiri Svoboda
* 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.
*/
 
/** @addtogroup loader
* @brief Loads and runs programs from VFS.
* @{
*/
/**
* @file
* @brief Loads and runs programs from VFS.
*
* The program loader is a special init binary. Its image is used
* to create a new task upon a @c task_spawn syscall. The syscall
* returns the id of a phone connected to the newly created task.
*
* The caller uses this phone to send the pathname and various other
* information to the loader. This is normally done by the C library
* and completely hidden from applications.
*/
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <ipc/ipc.h>
#include <ipc/loader.h>
#include <loader/pcb.h>
#include <errno.h>
#include <async.h>
#include <as.h>
 
#include <elf.h>
#include <elf_load.h>
 
/**
* Bias used for loading the dynamic linker. This will be soon replaced
* by automatic placement.
*/
#define RTLD_BIAS 0x80000
 
/** Pathname of the file that will be loaded */
static char *pathname = NULL;
 
/** The Program control block */
static pcb_t pcb;
 
/** Number of arguments */
static int argc = 0;
/** Argument vector */
static char **argv = NULL;
/** Buffer holding all arguments */
static char *arg_buf = NULL;
 
/** Receive a call setting pathname of the program to execute.
*
* @param rid
* @param request
*/
static void loader_set_pathname(ipc_callid_t rid, ipc_call_t *request)
{
ipc_callid_t callid;
size_t len;
char *name_buf;
 
if (!ipc_data_write_receive(&callid, &len)) {
ipc_answer_0(callid, EINVAL);
ipc_answer_0(rid, EINVAL);
return;
}
 
name_buf = malloc(len + 1);
if (!name_buf) {
ipc_answer_0(callid, ENOMEM);
ipc_answer_0(rid, ENOMEM);
return;
}
 
ipc_data_write_finalize(callid, name_buf, len);
ipc_answer_0(rid, EOK);
 
if (pathname != NULL) {
free(pathname);
pathname = NULL;
}
 
name_buf[len] = '\0';
pathname = name_buf;
}
 
/** Receive a call setting arguments of the program to execute.
*
* @param rid
* @param request
*/
static void loader_set_args(ipc_callid_t rid, ipc_call_t *request)
{
ipc_callid_t callid;
size_t buf_len, arg_len;
char *p;
int n;
 
if (!ipc_data_write_receive(&callid, &buf_len)) {
ipc_answer_0(callid, EINVAL);
ipc_answer_0(rid, EINVAL);
return;
}
 
if (arg_buf != NULL) {
free(arg_buf);
arg_buf = NULL;
}
 
if (argv != NULL) {
free(argv);
argv = NULL;
}
 
arg_buf = malloc(buf_len + 1);
if (!arg_buf) {
ipc_answer_0(callid, ENOMEM);
ipc_answer_0(rid, ENOMEM);
return;
}
 
ipc_data_write_finalize(callid, arg_buf, buf_len);
ipc_answer_0(rid, EOK);
 
arg_buf[buf_len] = '\0';
 
/*
* Count number of arguments
*/
p = arg_buf;
n = 0;
while (p < arg_buf + buf_len) {
arg_len = strlen(p);
p = p + arg_len + 1;
++n;
}
 
/* Allocate argv */
argv = malloc((n + 1) * sizeof(char *));
 
if (argv == NULL) {
free(arg_buf);
ipc_answer_0(callid, ENOMEM);
ipc_answer_0(rid, ENOMEM);
return;
}
 
/*
* Fill argv with argument pointers
*/
p = arg_buf;
n = 0;
while (p < arg_buf + buf_len) {
argv[n] = p;
 
arg_len = strlen(p);
p = p + arg_len + 1;
++n;
}
 
argc = n;
argv[n] = NULL;
}
 
 
/** Load and run the previously selected program.
*
* @param rid
* @param request
* @return 0 on success, !0 on error.
*/
static int loader_run(ipc_callid_t rid, ipc_call_t *request)
{
int rc;
 
elf_info_t prog_info;
elf_info_t interp_info;
 
// printf("Load program '%s'\n", pathname);
 
rc = elf_load_file(pathname, 0, &prog_info);
if (rc < 0) {
printf("failed to load program\n");
ipc_answer_0(rid, EINVAL);
return 1;
}
 
// printf("Create PCB\n");
elf_create_pcb(&prog_info, &pcb);
 
pcb.argc = argc;
pcb.argv = argv;
 
if (prog_info.interp == NULL) {
/* Statically linked program */
// printf("Run statically linked program\n");
// printf("entry point: 0x%llx\n", prog_info.entry);
ipc_answer_0(rid, EOK);
close_console();
elf_run(&prog_info, &pcb);
return 0;
}
 
printf("Load dynamic linker '%s'\n", prog_info.interp);
rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info);
if (rc < 0) {
printf("failed to load dynamic linker\n");
ipc_answer_0(rid, EINVAL);
return 1;
}
 
/*
* Provide dynamic linker with some useful data
*/
pcb.rtld_dynamic = interp_info.dynamic;
pcb.rtld_bias = RTLD_BIAS;
 
printf("run dynamic linker\n");
printf("entry point: 0x%llx\n", interp_info.entry);
close_console();
 
ipc_answer_0(rid, EOK);
elf_run(&interp_info, &pcb);
 
/* Not reached */
return 0;
}
 
/** Handle loader connection.
*
* Receive and carry out commands (of which the last one should be
* to execute the loaded program).
*/
static void loader_connection(ipc_callid_t iid, ipc_call_t *icall)
{
ipc_callid_t callid;
ipc_call_t call;
int retval;
 
/* Ignore parameters, the connection is already open */
(void)iid; (void)icall;
 
while (1) {
callid = async_get_call(&call);
// printf("received call from phone %d, method=%d\n",
// call.in_phone_hash, IPC_GET_METHOD(call));
switch (IPC_GET_METHOD(call)) {
case LOADER_SET_PATHNAME:
loader_set_pathname(callid, &call);
continue;
case LOADER_SET_ARGS:
loader_set_args(callid, &call);
case LOADER_RUN:
loader_run(callid, &call);
exit(0);
continue;
default:
retval = ENOENT;
break;
}
if ((callid & IPC_CALLID_NOTIFICATION) == 0 &&
IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP) {
printf("responding EINVAL to method %d\n",
IPC_GET_METHOD(call));
ipc_answer_0(callid, EINVAL);
}
}
}
 
/** Program loader main function.
*/
int main(int argc, char *argv[])
{
ipc_callid_t callid;
ipc_call_t call;
ipcarg_t phone_hash;
 
/* The first call only communicates the incoming phone hash */
callid = ipc_wait_for_call(&call);
 
if (IPC_GET_METHOD(call) != LOADER_HELLO) {
if (IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP)
ipc_answer_0(callid, EINVAL);
return 1;
}
 
ipc_answer_0(callid, EOK);
phone_hash = call.in_phone_hash;
 
/*
* Up until now async must not be used as it couldn't
* handle incoming requests. (Which means e.g. printf()
* cannot be used)
*/
async_new_connection(phone_hash, 0, NULL, loader_connection);
async_manager();
 
/* not reached */
return 0;
}
 
/** @}
*/
/trunk/uspace/srv/loader/elf_load.c
0,0 → 1,451
/*
* Copyright (c) 2006 Sergey Bondari
* Copyright (c) 2006 Jakub Jermar
* Copyright (c) 2008 Jiri Svoboda
* 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.
*/
 
/** @addtogroup generic
* @{
*/
 
/**
* @file
* @brief Userspace ELF loader.
*
* This module allows loading ELF binaries (both executables and
* shared objects) from VFS. The current implementation allocates
* anonymous memory, fills it with segment data and then adjusts
* the memory areas' flags to the final value. In the future,
* the segments will be mapped directly from the file.
*/
 
#include <stdio.h>
#include <sys/types.h>
#include <align.h>
#include <assert.h>
#include <as.h>
#include <unistd.h>
#include <fcntl.h>
#include <smc.h>
#include <loader/pcb.h>
 
#include "elf.h"
#include "elf_load.h"
#include "arch.h"
 
static char *error_codes[] = {
"no error",
"invalid image",
"address space error",
"incompatible image",
"unsupported image type",
"irrecoverable error"
};
 
static unsigned int elf_load(elf_ld_t *elf, size_t so_bias);
static int segment_header(elf_ld_t *elf, elf_segment_header_t *entry);
static int section_header(elf_ld_t *elf, elf_section_header_t *entry);
static int load_segment(elf_ld_t *elf, elf_segment_header_t *entry);
 
/** Load ELF binary from a file.
*
* Load an ELF binary from the specified file. If the file is
* an executable program, it is loaded unbiased. If it is a shared
* object, it is loaded with the bias @a so_bias. Some information
* extracted from the binary is stored in a elf_info_t structure
* pointed to by @a info.
*
* @param file_name Path to the ELF file.
* @param so_bias Bias to use if the file is a shared object.
* @param info Pointer to a structure for storing information
* extracted from the binary.
*
* @return EOK on success or negative error code.
*/
int elf_load_file(char *file_name, size_t so_bias, elf_info_t *info)
{
elf_ld_t elf;
 
int fd;
int rc;
 
// printf("open and read '%s'...\n", file_name);
 
fd = open(file_name, O_RDONLY);
if (fd < 0) {
printf("failed opening file\n");
return -1;
}
 
elf.fd = fd;
elf.info = info;
 
rc = elf_load(&elf, so_bias);
 
close(fd);
 
return rc;
}
 
/** Run an ELF executable.
*
* Transfers control to the entry point of an ELF executable loaded
* earlier with elf_load_file(). This function does not return.
*
* @param info Info structure filled earlier by elf_load_file()
*/
void elf_run(elf_info_t *info, pcb_t *pcb)
{
program_run(info->entry, pcb);
 
/* not reached */
}
 
/** Create the program control block (PCB).
*
* Fills the program control block @a pcb with information from
* @a info.
*
* @param info Program info structure
* @return EOK on success or negative error code
*/
void elf_create_pcb(elf_info_t *info, pcb_t *pcb)
{
pcb->entry = info->entry;
pcb->dynamic = info->dynamic;
}
 
 
/** Load an ELF binary.
*
* The @a elf structure contains the loader state, including
* an open file, from which the binary will be loaded,
* a pointer to the @c info structure etc.
*
* @param elf Pointer to loader state buffer.
* @param so_bias Bias to use if the file is a shared object.
* @return EE_OK on success or EE_xx error code.
*/
static unsigned int elf_load(elf_ld_t *elf, size_t so_bias)
{
elf_header_t header_buf;
elf_header_t *header = &header_buf;
int i, rc;
 
rc = read(elf->fd, header, sizeof(elf_header_t));
if (rc < 0) {
printf("read error\n");
return EE_INVALID;
}
 
elf->header = header;
 
// printf("ELF-load:");
/* Identify ELF */
if (header->e_ident[EI_MAG0] != ELFMAG0 ||
header->e_ident[EI_MAG1] != ELFMAG1 ||
header->e_ident[EI_MAG2] != ELFMAG2 ||
header->e_ident[EI_MAG3] != ELFMAG3) {
printf("invalid header\n");
return EE_INVALID;
}
/* Identify ELF compatibility */
if (header->e_ident[EI_DATA] != ELF_DATA_ENCODING ||
header->e_machine != ELF_MACHINE ||
header->e_ident[EI_VERSION] != EV_CURRENT ||
header->e_version != EV_CURRENT ||
header->e_ident[EI_CLASS] != ELF_CLASS) {
printf("incompatible data/version/class\n");
return EE_INCOMPATIBLE;
}
 
if (header->e_phentsize != sizeof(elf_segment_header_t)) {
printf("e_phentsize:%d != %d\n", header->e_phentsize,
sizeof(elf_segment_header_t));
return EE_INCOMPATIBLE;
}
 
if (header->e_shentsize != sizeof(elf_section_header_t)) {
printf("e_shentsize:%d != %d\n", header->e_shentsize,
sizeof(elf_section_header_t));
return EE_INCOMPATIBLE;
}
 
/* Check if the object type is supported. */
if (header->e_type != ET_EXEC && header->e_type != ET_DYN) {
printf("Object type %d is not supported\n", header->e_type);
return EE_UNSUPPORTED;
}
 
/* Shared objects can be loaded with a bias */
// printf("Object type: %d\n", header->e_type);
if (header->e_type == ET_DYN)
elf->bias = so_bias;
else
elf->bias = 0;
 
// printf("Bias set to 0x%x\n", elf->bias);
elf->info->interp = NULL;
elf->info->dynamic = NULL;
 
// printf("parse segments\n");
 
/* Walk through all segment headers and process them. */
for (i = 0; i < header->e_phnum; i++) {
elf_segment_header_t segment_hdr;
 
/* Seek to start of segment header */
lseek(elf->fd, header->e_phoff
+ i * sizeof(elf_segment_header_t), SEEK_SET);
 
rc = read(elf->fd, &segment_hdr, sizeof(elf_segment_header_t));
if (rc < 0) { printf("read error\n"); return EE_INVALID; }
 
rc = segment_header(elf, &segment_hdr);
if (rc != EE_OK)
return rc;
}
 
// printf("parse sections\n");
 
/* Inspect all section headers and proccess them. */
for (i = 0; i < header->e_shnum; i++) {
elf_section_header_t section_hdr;
 
/* Seek to start of section header */
lseek(elf->fd, header->e_shoff
+ i * sizeof(elf_section_header_t), SEEK_SET);
 
rc = read(elf->fd, &section_hdr, sizeof(elf_section_header_t));
if (rc < 0) { printf("read error\n"); return EE_INVALID; }
 
rc = section_header(elf, &section_hdr);
if (rc != EE_OK)
return rc;
}
 
elf->info->entry =
(entry_point_t)((uint8_t *)header->e_entry + elf->bias);
 
// printf("done\n");
 
return EE_OK;
}
 
/** Print error message according to error code.
*
* @param rc Return code returned by elf_load().
*
* @return NULL terminated description of error.
*/
char *elf_error(unsigned int rc)
{
assert(rc < sizeof(error_codes) / sizeof(char *));
 
return error_codes[rc];
}
 
/** Process segment header.
*
* @param entry Segment header.
*
* @return EE_OK on success, error code otherwise.
*/
static int segment_header(elf_ld_t *elf, elf_segment_header_t *entry)
{
switch (entry->p_type) {
case PT_NULL:
case PT_PHDR:
break;
case PT_LOAD:
return load_segment(elf, entry);
break;
case PT_INTERP:
/* Assume silently interp == "/rtld.so" */
elf->info->interp = "/rtld.so";
break;
case PT_DYNAMIC:
case PT_SHLIB:
case PT_NOTE:
case PT_LOPROC:
case PT_HIPROC:
default:
printf("segment p_type %d unknown\n", entry->p_type);
return EE_UNSUPPORTED;
break;
}
return EE_OK;
}
 
/** Load segment described by program header entry.
*
* @param elf Loader state.
* @param entry Program header entry describing segment to be loaded.
*
* @return EE_OK on success, error code otherwise.
*/
int load_segment(elf_ld_t *elf, elf_segment_header_t *entry)
{
void *a;
int flags = 0;
uintptr_t bias;
uintptr_t base;
size_t mem_sz;
int rc;
 
// printf("load segment at addr 0x%x, size 0x%x\n", entry->p_vaddr,
// entry->p_memsz);
bias = elf->bias;
 
if (entry->p_align > 1) {
if ((entry->p_offset % entry->p_align) !=
(entry->p_vaddr % entry->p_align)) {
printf("align check 1 failed offset%%align=%d, vaddr%%align=%d\n",
entry->p_offset % entry->p_align,
entry->p_vaddr % entry->p_align
);
return EE_INVALID;
}
}
 
/* Final flags that will be set for the memory area */
 
if (entry->p_flags & PF_X)
flags |= AS_AREA_EXEC;
if (entry->p_flags & PF_W)
flags |= AS_AREA_WRITE;
if (entry->p_flags & PF_R)
flags |= AS_AREA_READ;
flags |= AS_AREA_CACHEABLE;
base = ALIGN_DOWN(entry->p_vaddr, PAGE_SIZE);
mem_sz = entry->p_memsz + (entry->p_vaddr - base);
 
// printf("map to p_vaddr=0x%x-0x%x...\n", entry->p_vaddr + bias,
// entry->p_vaddr + bias + ALIGN_UP(entry->p_memsz, PAGE_SIZE));
 
/*
* For the course of loading, the area needs to be readable
* and writeable.
*/
a = as_area_create((uint8_t *)base + bias,
mem_sz, AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE);
if (a == (void *)(-1)) {
printf("memory mapping failed\n");
return EE_MEMORY;
}
 
// printf("as_area_create(0x%lx, 0x%x, %d) -> 0x%lx\n",
// entry->p_vaddr+bias, entry->p_memsz, flags, (uintptr_t)a);
 
/*
* Load segment data
*/
// printf("seek to %d\n", entry->p_offset);
rc = lseek(elf->fd, entry->p_offset, SEEK_SET);
if (rc < 0) { printf("seek error\n"); return EE_INVALID; }
 
// printf("read 0x%x bytes to address 0x%x\n", entry->p_filesz, entry->p_vaddr+bias);
/* rc = read(fd, (void *)(entry->p_vaddr + bias), entry->p_filesz);
if (rc < 0) { printf("read error\n"); return EE_INVALID; }*/
 
/* Long reads are not possible yet. Load segment picewise */
 
unsigned left, now;
uint8_t *dp;
 
left = entry->p_filesz;
dp = (uint8_t *)(entry->p_vaddr + bias);
 
while (left > 0) {
now = 16384;
if (now > left) now = left;
 
// printf("read %d...", now);
rc = read(elf->fd, dp, now);
// printf("->%d\n", rc);
 
if (rc < 0) { printf("read error\n"); return EE_INVALID; }
 
left -= now;
dp += now;
}
 
// printf("set area flags to %d\n", flags);
rc = as_area_change_flags((uint8_t *)entry->p_vaddr + bias, flags);
if (rc != 0) {
printf("failed to set memory area flags\n");
return EE_MEMORY;
}
 
if (flags & AS_AREA_EXEC) {
/* Enforce SMC coherence for the segment */
if (smc_coherence(entry->p_vaddr + bias, entry->p_filesz))
return EE_MEMORY;
}
 
return EE_OK;
}
 
/** Process section header.
*
* @param elf Loader state.
* @param entry Segment header.
*
* @return EE_OK on success, error code otherwise.
*/
static int section_header(elf_ld_t *elf, elf_section_header_t *entry)
{
switch (entry->sh_type) {
case SHT_PROGBITS:
if (entry->sh_flags & SHF_TLS) {
/* .tdata */
}
break;
case SHT_NOBITS:
if (entry->sh_flags & SHF_TLS) {
/* .tbss */
}
break;
case SHT_DYNAMIC:
/* Record pointer to dynamic section into info structure */
elf->info->dynamic =
(void *)((uint8_t *)entry->sh_addr + elf->bias);
printf("dynamic section found at 0x%x\n",
(uintptr_t)elf->info->dynamic);
break;
default:
break;
}
return EE_OK;
}
 
/** @}
*/
/trunk/uspace/srv/loader/Makefile
0,0 → 1,94
#
# Copyright (c) 2005 Martin Decky
# Copyright (c) 2008 Jiri Svoboda
# 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
include ../../Makefile.config
 
## Setup toolchain
#
 
LIBC_PREFIX = ../../lib/libc
SOFTINT_PREFIX = ../../lib/softint
include $(LIBC_PREFIX)/Makefile.toolchain
include arch/$(ARCH)/Makefile.inc
 
CFLAGS += -Iinclude
 
LIBS = $(LIBC_PREFIX)/libc.a $(SOFTINT_PREFIX)/libsoftint.a
DEFS += -DRELEASE=\"$(RELEASE)\"
 
ifdef REVISION
DEFS += "-DREVISION=\"$(REVISION)\""
endif
 
ifdef TIMESTAMP
DEFS += "-DTIMESTAMP=\"$(TIMESTAMP)\""
endif
 
## Sources
#
 
OUTPUT = loader
GENERIC_SOURCES = \
main.c \
elf_load.c \
interp.s
 
SOURCES := $(GENERIC_SOURCES) $(ARCH_SOURCES)
OBJECTS := $(addsuffix .o,$(basename $(SOURCES)))
 
.PHONY: all clean depend disasm
 
all: $(OUTPUT) disasm
 
-include Makefile.depend
 
clean:
-rm -f $(OUTPUT) $(OBJECTS) $(OUTPUT).map $(OUTPUT).disasm arch/$(ARCH)/_link.ld Makefile.depend
 
depend:
$(CC) $(DEFS) $(CFLAGS) -M $(SOURCES) > Makefile.depend
 
$(OUTPUT): $(OBJECTS) $(LIBS) arch/$(ARCH)/_link.ld
$(LD) -T arch/$(ARCH)/_link.ld $(LFLAGS) $(OBJECTS) $(LIBS) -o $@ -Map $(OUTPUT).map
 
disasm:
$(OBJDUMP) -d $(OUTPUT) >$(OUTPUT).disasm
 
arch/$(ARCH)/_link.ld: arch/$(ARCH)/_link.ld.in
$(CC) $(DEFS) $(CFLAGS) -DLIBC_PREFIX=$(LIBC_PREFIX) -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 $@
/trunk/uspace/srv/loader/arch/sparc64/_link.ld.in
0,0 → 1,59
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} :interp
 
. = 0x70004000 + SIZEOF_HEADERS;
 
.init : {
*(.init);
} :text
.text : {
*(.text);
*(.rodata*);
} :text
 
. = . + 0x4000;
 
.got : {
_gp = .;
*(.got*);
} :data
.data : {
*(.data);
*(.sdata);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(.sbss);
*(COMMON);
*(.bss);
} :data
 
. = ALIGN(0x4000);
_heap = .;
/DISCARD/ : {
*(*);
}
 
}
/trunk/uspace/srv/loader/arch/sparc64/sparc64.s
0,0 → 1,42
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
.globl program_run
 
## void program_run(void *entry_point, void *pcb);
#
# %o0 contains entry_point
# %o1 contains pcb
#
# Jump to a program entry point
program_run:
# Pass pcb pointer to entry point in %o1. As it is already
# there, no action is needed.
call %o0
nop
# fixme: use branch instead of call
/trunk/uspace/srv/loader/arch/sparc64/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__64_BITS__
ARCH_SOURCES := arch/$(ARCH)/sparc64.s
/trunk/uspace/srv/loader/arch/ia64/_link.ld.in
0,0 → 1,66
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} :interp
 
. = 0x00084000 + SIZEOF_HEADERS;
 
.init : {
LONG(0);
LONG(0);
LONG(0);
LONG(0);
LONG(0);
LONG(0);
*(.init);
} : text
.text : {
*(.text);
*(.rodata*);
} :text
 
. = . + 0x4000;
 
.got : {
_gp = .;
*(.got*);
} :data
.data : {
*(.opd);
*(.data .data.*);
*(.sdata);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(.sbss);
*(.scommon);
*(COMMON);
*(.bss);
} :data
 
. = ALIGN(0x4000);
_heap = .;
/DISCARD/ : {
*(*);
}
}
/trunk/uspace/srv/loader/arch/ia64/ia64.s
0,0 → 1,43
#
# Copyright (c) 2008 Jiri Svoboda
# 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 program_run
 
## void program_run(void *entry_point, void *pcb);
#
# in0 (r32) contains entry_point
# in1 (r33) contains pcb
#
# Jump to a program entry point
program_run:
# Pass pcb to the entry point in r2
 
mov b6 = r32
mov r2 = r33 ;;
br b6 ;;
/trunk/uspace/srv/loader/arch/ia64/Makefile.inc
0,0 → 1,31
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__64_BITS__
ARCH_SOURCES := arch/$(ARCH)/ia64.s
AFLAGS += -xexplicit
/trunk/uspace/srv/loader/arch/arm32/_link.ld.in
0,0 → 1,59
/*
* The only difference from _link.ld.in for regular statically-linked apps
* is the base address.
*/
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} : interp
 
. = 0x70001000;
 
.init ALIGN(0x1000): SUBALIGN(0x1000) {
*(.init);
} : text
.text : {
*(.text);
*(.rodata*);
} :text
.data ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.opd);
*(.data .data.*);
*(.sdata);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(.sbss);
*(.scommon);
*(COMMON);
*(.bss);
} :data
. = ALIGN(0x1000);
_heap = .;
/DISCARD/ : {
*(*);
}
 
}
/trunk/uspace/srv/loader/arch/arm32/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__32_BITS__
ARCH_SOURCES := arch/$(ARCH)/arm32.s
/trunk/uspace/srv/loader/arch/arm32/arm32.s
0,0 → 1,39
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
.globl program_run
 
## void program_run(void *entry_point, void *pcb);
#
# r0 contains entry_point
# r1 contains pcb
#
# Jump to a program entry point
program_run:
# pcb is passed to the entry point in r1 (where it already is)
mov r15, r0
/trunk/uspace/srv/loader/arch/ppc32/_link.ld.in
0,0 → 1,57
/*
* The only difference from _link.ld.in for regular statically-linked apps
* is the base address.
*/
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} :interp
 
. = 0x70001000;
 
.init ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.init);
} :text
.text : {
*(.text);
*(.rodata*);
} :text
.data ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.data);
*(.sdata);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(.sbss);
*(COMMON);
*(.bss);
} :data
 
. = ALIGN(0x1000);
_heap = .;
/DISCARD/ : {
*(*);
}
 
}
/trunk/uspace/srv/loader/arch/ppc32/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__32_BITS__
ARCH_SOURCES := arch/$(ARCH)/ppc32.s
/trunk/uspace/srv/loader/arch/ppc32/ppc32.s
0,0 → 1,40
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
.globl program_run
 
## void program_run(void *entry_point, void *pcb);
#
# %r3 contains entry_point
# %r4 contains pcb
#
# Jump to a program entry point
program_run:
mtctr %r3
mr %r3, %r4 # Pass pcb to the entry point in %r3
bctr
/trunk/uspace/srv/loader/arch/amd64/_link.ld.in
0,0 → 1,52
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} : interp
 
/* . = 0x0000700000001000;*/
. = 0x70001000;
.init ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.init);
} :text
.text : {
*(.text);
*(.rodata*);
} :text
.data ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.data);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(COMMON);
*(.bss);
} :data
 
. = ALIGN(0x1000);
_heap = .;
/DISCARD/ : {
*(*);
}
 
}
/trunk/uspace/srv/loader/arch/amd64/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__64_BITS__
ARCH_SOURCES := arch/$(ARCH)/amd64.s
/trunk/uspace/srv/loader/arch/amd64/amd64.s
0,0 → 1,43
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
.globl program_run
 
## void program_run(void *entry_point, void *pcb);
#
# %rdi contains entry_point
# %rsi contains pcb
#
# Jump to a program entry point
program_run:
# pcb must be passed in %rdi, use %rdx as a scratch register
mov %rdi, %rdx
mov %rsi, %rdi
 
# jump to entry point
jmp %rdx
/trunk/uspace/srv/loader/arch/mips32/_link.ld.in
0,0 → 1,66
/*
* The only difference from _link.ld.in for regular statically-linked apps
* is the base address.
*/
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} :interp
 
. = 0x70004000;
.init ALIGN(0x4000) : SUBALIGN(0x4000) {
*(.init);
} :text
.text : {
*(.text);
*(.rodata*);
} :text
 
.data : {
*(.data);
*(.data.rel*);
} :data
 
.got : {
_gp = .;
*(.got);
} :data
 
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
 
.sbss : {
*(.scommon);
*(.sbss);
}
.bss : {
*(.bss);
*(COMMON);
} :data
 
. = ALIGN(0x4000);
_heap = .;
 
/DISCARD/ : {
*(*);
}
}
/trunk/uspace/srv/loader/arch/mips32/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__32_BITS__
ARCH_SOURCES := arch/$(ARCH)/mips32.s
/trunk/uspace/srv/loader/arch/mips32/mips32.s
0,0 → 1,49
#
# Copyright (c) 2008 Jiri Svoboda
# 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
.section .text
.global program_run
.set noreorder
 
## void program_run(void *entry_point, void *pcb);
#
# $a0 (=$4) contains entry_point
# $a1 (=$5) contains pcb
#
# Jump to a program entry point
.ent program_run
program_run:
# tmp := entry_point
move $25, $a0
 
# Pass pcb to the entry point in $a0
move $a0, $a1
jr $25
nop
.end
/trunk/uspace/srv/loader/arch/ia32/_link.ld.in
0,0 → 1,55
/*
* The difference from _link.ld.in for regular statically-linked apps
* is the base address and the special interp section.
*/
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o)
ENTRY(__entry)
 
PHDRS {
interp PT_INTERP;
text PT_LOAD FILEHDR PHDRS FLAGS(5);
data PT_LOAD FLAGS(6);
}
 
SECTIONS {
.interp : {
*(.interp);
} :interp
 
. = 0x70001000;
 
.init ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.init);
} :text
.text : {
*(.text);
*(.rodata*);
} :text
.data ALIGN(0x1000) : SUBALIGN(0x1000) {
*(.data);
} :data
.tdata : {
_tdata_start = .;
*(.tdata);
_tdata_end = .;
} :data
.tbss : {
_tbss_start = .;
*(.tbss);
_tbss_end = .;
} :data
_tls_alignment = MAX(ALIGNOF(.tdata), ALIGNOF(.tbss));
.bss : {
*(COMMON);
*(.bss);
} :data
. = ALIGN(0x1000);
_heap = .;
/DISCARD/ : {
*(*);
}
 
}
/trunk/uspace/srv/loader/arch/ia32/ia32.s
0,0 → 1,49
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
.globl program_run
 
## void program_run(void *entry_point, void *pcb);
#
# Jump to a program entry point
program_run:
# Use standard ia32 prologue not to confuse anybody
push %ebp
movl %esp, %ebp
 
# %eax := entry_point
movl 0x8(%ebp), %eax
 
# %ebx := pcb
# pcb is passed to the entry point int %ebx
mov 0xc(%ebp), %ebx
 
# Save a tiny bit of stack space
pop %ebp
 
jmp %eax
/trunk/uspace/srv/loader/arch/ia32/Makefile.inc
0,0 → 1,30
#
# Copyright (c) 2008 Jiri Svoboda
# 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.
#
 
CFLAGS += -D__32_BITS__
ARCH_SOURCES := arch/$(ARCH)/ia32.s