/branches/dynload/uspace/lib/rtld/arch/ia32/bootstrap.c |
---|
File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/runtime.c |
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File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/entry.s |
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File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/include/elf_dyn.h |
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0,0 → 1,50 |
/* |
* 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 |
*/ |
#ifndef ia32_ELF_DYN_H_ |
#define ia32_ELF_DYN_H_ |
/* |
* ia32 dynamic relocation types |
*/ |
#define R_386_32 1 |
#define R_386_GLOB_DAT 6 |
#define R_386_JUMP_SLOT 7 |
#define R_386_RELATIVE 8 |
#endif |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ia32/Makefile.inc |
---|
26,8 → 26,10 |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
CFLAGS += -D__32_BITS__ |
ARCH_SOURCES := \ |
arch/$(ARCH)/entry.s \ |
arch/$(ARCH)/bootstrap.c \ |
arch/$(ARCH)/runtime.c |
arch/$(ARCH)/src/entry.s \ |
arch/$(ARCH)/src/bootstrap.c \ |
arch/$(ARCH)/src/runtime.c |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/entry.s |
---|
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. |
# |
.section .text |
.globl __bootstrap |
.hidden __bootstrap |
.type __entry, @function |
__entry: |
mov %ss, %ax |
mov %ax, %ds |
mov %ax, %es |
mov %ax, %fs |
call __bootstrap |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/runtime.c |
---|
0,0 → 1,98 |
/* |
* 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 rtld rtld |
* @brief |
* @{ |
*/ |
/** |
* @file |
*/ |
#include <sys/types.h> |
#include <align.h> |
#include <tls.h> |
void _putint(int i); |
/* FIXME */ |
void __udivdi3(void); |
void __umoddi3(void); |
static void kputint(unsigned i) |
{ |
unsigned dummy; |
asm volatile ( |
"movl $30, %%eax;" |
"int $0x30" |
: "=d" (dummy) /* output - %edx clobbered */ |
: "d" (i) /* input */ |
: "%eax","%ecx" /* all scratch registers clobbered */ |
); |
} |
typedef struct { |
unsigned long int ti_module; |
unsigned long int ti_offset; |
} tls_index; |
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti); |
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti) |
{ |
size_t tls_size; |
uint8_t *tls; |
/* Calculate size of TLS block */ |
tls_size = ALIGN_UP(&_tbss_end - &_tdata_start, &_tls_alignment); |
/* The TLS block is just before TCB */ |
tls = (uint8_t *)__tcb_get() - tls_size; |
return tls + ti->ti_offset; |
} |
void __umoddi3(void) |
{ |
kputint(0x101); |
*(int *)0 = 0; /* cause a page fault */ |
} |
void __udivdi3(void) |
{ |
kputint(0x102); |
*(int *)0 = 0; /* cause a page fault */ |
} |
void _putint(int i) |
{ |
} |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/bootstrap.c |
---|
0,0 → 1,239 |
/* |
* 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 rtld rtld |
* @brief |
* @{ |
*/ |
/** |
* @file |
*/ |
#include <elf_dyn.h> |
#include <rtld.h> |
void __main(void); |
void __io_init(void); |
void __exit(void); |
static void kputint(unsigned i) |
{ |
unsigned dummy; |
asm volatile ( |
"movl $30, %%eax;" |
"int $0x30" |
: "=d" (dummy) /* output - %edx clobbered */ |
: "d" (i) /* input */ |
: "%eax","%ecx" /* all scratch registers clobbered */ |
); |
} |
void __bootstrap(void) |
{ |
unsigned bias; |
unsigned *got; |
elf_dyn_t *dynamic; |
void *dptr; |
unsigned dval; |
int i; |
size_t rel_entries; |
size_t r_offset; |
elf_word r_info; |
unsigned rel_type; |
elf_word sym_idx; |
uintptr_t sym_addr; |
elf_symbol_t *sym_table; |
elf_rel_t *rel_table; |
elf_rel_t *jmp_rel_table; |
size_t jmp_rel_entries; |
asm volatile ( |
/* Calculate the bias into %0 */ |
/* Generates "fake" R_386_RELATIVE run-time relocation */ |
" call .L0;" |
".L0: pop %0;" |
" subl $.L0, %0;" |
/* Calculate run-time address of _DYNAMIC into %1 */ |
/* Generates "fake" R_386_RELATIVE run-time relocation */ |
" movl $_DYNAMIC, %1;" /* Again, at link time 0-based VMA gets in */ |
" addl %0, %1;" /* Add bias to compute run-time address */ |
: "=r" (bias), "=r" (dynamic) |
); |
kputint(bias); |
kputint((unsigned)dynamic); |
/* parse DYNAMIC */ |
got = 0; |
sym_table = 0; |
rel_table = 0; |
rel_entries = 0; |
jmp_rel_table = 0; |
jmp_rel_entries = 0; |
i = 0; |
while (dynamic[i].d_tag != 0) { |
dptr = (void *)(dynamic[i].d_un.d_val + bias); |
dval = dynamic[i].d_un.d_val; |
switch (dynamic[i].d_tag) { |
case 2/* DT_PLTRELSZ */: jmp_rel_entries = dval/8; break; |
case 23/* DT_JMPREL */: jmp_rel_table = dptr; break; |
case 3 /* DT_PLTGOT */: |
/* GOT address */ |
got = dptr; break; |
case 6 /* DT_SYMTAB */ : sym_table = dptr; break; |
case 17 /* DT_REL */ : rel_table = dptr; break; |
case 18 /* DT_RELSZ */ : rel_entries = dval / 8; break; |
default: break; |
} |
++i; |
} |
kputint(1); |
kputint((unsigned)sym_table); |
kputint((unsigned)rel_table); |
kputint((unsigned)rel_entries); |
/* Now relocate all our dynsyms */ |
kputint(-1); |
for (i=0; i<rel_entries; i++) { |
kputint(i); |
r_offset = rel_table[i].r_offset; |
r_info = rel_table[i].r_info; |
rel_type = ELF32_R_TYPE(r_info); |
kputint(rel_type); |
kputint(r_offset); |
switch (rel_type) { |
case 6: /* R_386_GLOB_DAT */ |
case 7: /* R_386_JUMP_SLOT */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) = sym_addr; |
break; |
case 1: /* R_386_32 */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) += sym_addr; |
break; |
case 8: /* R_386_RELATIVE */ |
kputint(16); |
*(unsigned *)(r_offset+bias) += bias; |
break; |
} |
} |
kputint(-1); |
for (i=0; i<jmp_rel_entries; i++) { |
kputint(i); |
r_offset = jmp_rel_table[i].r_offset; |
r_info = jmp_rel_table[i].r_info; |
rel_type = ELF32_R_TYPE(r_info); |
kputint(rel_type); |
kputint(r_offset); |
switch (rel_type) { |
case 6: /* R_386_GLOB_DAT */ |
case 7: /* R_386_JUMP_SLOT */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) = sym_addr; |
break; |
case 1: /* R_386_32 */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) += sym_addr; |
break; |
case 8: /* R_386_RELATIVE */ |
kputint(16); |
*(unsigned *)(r_offset+bias) += bias; |
break; |
} |
} |
kputint(-1); |
/* Init libc and run rtld main */ |
__main(); |
kputint(33); |
__io_init(); |
kputint(34); |
_rtld_main(); |
kputint(35); |
__exit(); |
kputint(36); |
asm ( |
"movl $250, %%eax;" |
"int $0x30" |
: /* output */ |
: /* input */ |
: "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
); |
} |
/** @} |
*/ |