/branches/dynload/uspace/lib/rtld/arch/ppc32/src/entry.s |
---|
0,0 → 1,43 |
# |
# 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 __entry |
.hidden __bootstrap |
.type __entry, @function |
## Rtld entry point |
# |
# r6 contains the PCB pointer |
# |
__entry: |
# Pass the PCB pointer to __bootstrap as the first argument. |
# The first argument is passed in r3. |
mr %r3, %r6 |
bl __bootstrap |
/branches/dynload/uspace/lib/rtld/arch/ppc32/src/runtime.c |
---|
0,0 → 1,72 |
/* |
* 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> |
static void kputint(unsigned i) |
{ |
asm volatile ( |
"mr %%r3, %0\n" |
"li %%r9, 31\n" |
"sc\n" |
: |
: "r" (i) |
: "%r3","%r9" |
) ; |
} |
//typedef struct { |
// unsigned long int ti_module; |
// unsigned long int ti_offset; |
//} tls_index; |
//void *__tls_get_addr(tls_index *ti); |
///* ppc32 uses TLS variant 1 */ |
//void *__tls_get_addr(tls_index *ti) |
//{ |
// uint8_t *tls; |
// |
// /* The TLS section is just after TCB */ |
// tls = (uint8_t *)__tcb_get() + sizeof(tcb_t); |
// |
// return tls + ti->ti_offset; |
//} |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ppc32/src/bootstrap.c |
---|
0,0 → 1,331 |
/* |
* 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> |
#include <loader/pcb.h> |
// for testing printf |
#include <stdio.h> |
void __main(pcb_t *pcb); |
//void __io_init(void); |
void __exit(void); |
static void kputint(unsigned i) |
{ |
/* asm volatile ( |
"mr %%r3, %0\n" |
"li %%r9, 31\n" |
"sc\n" |
: |
: "r" (i) |
: "%r3","%r9" |
) ;*/ |
} |
#define __L(ptr) ((uint32_t)(ptr) & 0x0000ffff) |
#define __HA(ptr) ((uint32_t)(ptr) >> 16) |
// ldis r11, .PLTtable@ha |
static inline uint32_t _ldis(unsigned rD, uint16_t imm16) |
{ |
/* Special case of addis: ldis rD,SIMM == addis rD,0,SIMM */ |
return 0x3C000000 | (rD << 21) | imm16; |
} |
static inline uint32_t _lwz(unsigned rD, uint16_t disp16, unsigned rA) |
{ |
return 0x80000000 | (rD << 21) | (rA << 16) | disp16; |
} |
static inline uint32_t _mtctr(unsigned rS) |
{ |
/* mtctr rD == mtspr 9, rD */ |
return 0x7c0003a6 | (rS << 21) | (9/*CTR*/ << 16); |
} |
static inline uint32_t _bctr() |
{ |
/* bcctr 0x1f, 0 */ |
return 0x4c000420 | (0x1f/*always*/ << 21); |
} |
/* branch */ |
static inline uint32_t _b(uint32_t *addr, uint32_t *location) |
{ |
uint32_t raddr = ((uint32_t)addr - (uint32_t)location) & 0x03fffffc; |
return 0x48000000 | raddr; |
} |
void test_func(void) |
{ |
kputint(-1); |
kputint(42); |
kputint(-1); |
} |
int test_var = 0x818283; |
void __bootstrap(pcb_t *pcb); |
void __bootstrap(pcb_t *pcb) |
{ |
unsigned bias; |
uint32_t *plt; |
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_rela_t *rel_table; |
elf_rela_t *jmp_rel_table; |
size_t jmp_rel_entries; |
uint32_t a, res; |
uint32_t *r_ptr; |
uint32_t *_plt_ent; |
kputint(42); |
/* The program loader (iloader) kindly provided us with these */ |
dynamic = pcb->rtld_dynamic; |
bias = pcb->rtld_bias; |
kputint(bias); |
kputint((unsigned)dynamic); |
/* parse DYNAMIC */ |
plt = 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) { |
// kputint((uintptr_t)&dynamic[i]); |
// kputint((uintptr_t)&(dynamic[i].d_tag)); |
// kputint(dynamic[i].d_tag); |
dptr = (void *)(dynamic[i].d_un.d_val + bias); |
dval = dynamic[i].d_un.d_val; |
// kputint(0x10); |
register unsigned tag = dynamic[i].d_tag; |
*/ |
/* |
* Note that switches only work because we are using |
* -fno-jump-tables. |
*/ |
/* switch (tag) { |
case DT_PLTRELSZ: jmp_rel_entries = dval/sizeof(elf_rela_t); break; |
case DT_JMPREL: jmp_rel_table = dptr; break; |
case DT_PLTGOT:*/ |
/* PLT address */ |
/* plt = dptr; break; |
case DT_SYMTAB: sym_table = dptr; break; |
case DT_RELA: rel_table = dptr; break; |
case DT_RELASZ: rel_entries = dval / sizeof(elf_rela_t); break; |
default: break; |
} |
*/ |
// kputint(0x20); |
/* |
++i; |
} |
kputint(1); |
kputint((unsigned)sym_table); |
kputint((unsigned)rel_table); |
kputint((unsigned)rel_entries); |
*/ /* Now relocate all our dynsyms */ |
kputint(-1); |
// PLT entries start here. However, each occupies 2 words |
// _plt_ent = plt + 18; |
// By definition of the ppc ABI, there's 1:1 correspondence |
// between JMPREL entries and PLT entries |
// unsigned plt_n = jmp_rel_entries; |
/* |
uint32_t *_plt_table; |
uint32_t *_plt_call; |
uint32_t *_plt_resolve; |
_plt_resolve = plt; |
_plt_call = plt + 6; |
_plt_table = plt + 18 + plt_n; |
for (i=0; i<rel_entries; i++) { |
// kputint(i); |
r_offset = rel_table[i].r_offset; |
r_info = rel_table[i].r_info; |
r_ptr = (uint32_t *)(r_offset + bias); |
a = rel_table[i].r_addend; |
// kputint(-2); |
// kputint(a); |
// kputint(ELF32_R_TYPE(r_info)); |
// kputint(ELF32_R_SYM(r_info)); |
rel_type = ELF32_R_TYPE(r_info); |
// kputint(rel_type); |
// kputint(r_offset); |
switch (rel_type) { |
case R_PPC_JMP_SLOT: |
// kputint(0xa); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
// kputint(sym_idx); |
// kputint(sym_addr); |
// r_ptr should point to a plt entry... |
uint32_t pidx = (r_ptr - _plt_ent) / 2; |
if (pidx >= plt_n) { |
kputint(0xee00ee00); |
while(1); |
} |
// _plt_table[pidx] = sym_addr; |
// kputint(pidx); |
plt[18+2*pidx] = _b((void *)sym_addr, &plt[18+2*pidx]); |
// kputint(&plt[18]); |
// kputint(plt[18]); |
// while(1); |
// while(1); |
// *r_ptr = sym_addr; |
break; |
case R_PPC_ADDR32: |
kputint(0xb); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*r_ptr = a + sym_addr; |
break; |
case R_PPC_RELATIVE: |
kputint(0xc); |
*r_ptr = a + bias; |
break; |
case R_PPC_REL24: |
kputint(0xd); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_addr); |
res = (sym_addr - (uint32_t)r_ptr + a) >> 2; |
kputint(res); |
if (res & 0xff000000) {*/ |
/* out of range?? */ |
/* kputint(0xeeeeeeee); |
//while(1); |
} |
*r_ptr = (*r_ptr & ~0x00ffffff) | (res & 0x00ffffff); |
kputint(0x1d); |
break; |
} |
} |
*/ |
kputint(-3); |
// if (plt != 0) { |
/* .PLTcall: */ |
// plt[6] = _ldis(11, __HA(_plt_table)); // ldis r11, .PLTtable@ha |
// plt[7] = _lwz(11, __L(_plt_table), 11); // lwz r11, .PLTtable@l(r11) |
// plt[8] = _mtctr(11); // mtctr r11 |
// plt[9] = _bctr(); |
/* .PLTi, i = 0..N-1 */ |
/* kputint(-4); |
for (i = 0; i < plt_n; ++i) { |
//_plt_table[i] == function address; |
plt[18+i] = _b(_plt_call, &plt[18+i]); // b .PLTcall |
} |
*/ |
// kputint(-5); |
// kputint(_plt_table[0]); |
// } |
// kputint(-6); |
/* This will come in handy */ |
// runtime_env.rtld_dynamic = dynamic; |
// runtime_env.rtld.bias = bias; |
// volatile int ff=1; |
// while(ff); |
kputint(-7); |
test_func(); |
kputint(0x42); |
kputint(test_var); |
// while(1); |
// while(1); |
/* Init libc and run rtld main */ |
kputint(0x22); |
__main(pcb); |
// kputint(33); |
// __io_init(); |
kputint(-1); |
kputint(0x52); |
// printf("Hello, world! (from ppc rtld)\n"); |
kputint(0x62); |
// while(1); |
kputint(34); |
_rtld_main(); |
kputint(35); |
__exit(); |
kputint(36); |
} |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ppc32/_link.ld.in |
---|
1,4 → 1,3 |
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
/branches/dynload/uspace/lib/rtld/arch/ppc32/Makefile.inc |
---|
26,8 → 26,12 |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
CFLAGS += -D__32_BITS__ |
CFLAGS += -D__32_BITS__ -fno-jump-tables |
LFLAGS += -e __entry |
ARCH_SOURCES := \ |
arch/$(ARCH)/src/entry.s \ |
arch/$(ARCH)/src/bootstrap.c \ |
arch/$(ARCH)/src/runtime.c \ |
arch/$(ARCH)/src/reloc.c \ |
arch/$(ARCH)/src/start.s |
/branches/dynload/uspace/lib/rtld/arch/ia32/_link.ld.in |
---|
1,4 → 1,3 |
STARTUP(LIBC_PREFIX/arch/ARCH/src/entry.o) |
ENTRY(__entry) |
PHDRS { |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/bootstrap.c |
---|
0,0 → 1,255 |
/* |
* 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 <loader/pcb.h> |
#include <elf_dyn.h> |
#include <rtld.h> |
void __main(pcb_t *pcb); |
//void __io_init(void); |
void __exit(void); |
static void kputint(unsigned i) |
{ |
// unsigned dummy; |
// asm volatile ( |
// "movl $32, %%eax;" |
// "int $0x30" |
// : "=d" (dummy) /* output - %edx clobbered */ |
// : "d" (i) /* input */ |
// : "%eax","%ecx" /* all scratch registers clobbered */ |
// ); |
} |
void __bootstrap(pcb_t *pcb) |
{ |
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; |
/* The program loader kindly provided us with these */ |
dynamic = pcb->rtld_dynamic; |
bias = pcb->rtld_bias; |
/* |
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(pcb); |
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 DT_PLTRELSZ: jmp_rel_entries = dval/8; break; |
case DT_JMPREL: jmp_rel_table = dptr; break; |
case DT_PLTGOT:*/ |
/* GOT address */ |
/*got = dptr; break; |
case DT_SYMTAB: sym_table = dptr; break; |
case DT_REL: rel_table = dptr; break; |
case 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 R_386_GLOB_DAT: |
case 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 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 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 R_386_GLOB_DAT: |
case 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 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 R_386_RELATIVE: |
kputint(16); |
*(unsigned *)(r_offset+bias) += bias; |
break; |
} |
} |
*/ |
kputint(-1); |
kputint(0x42); |
/* This will come in handy */ |
__pcb = pcb; |
runtime_env.rtld_dynamic = dynamic; |
runtime_env.rtld.bias = bias; |
kputint(0x43); |
/* Init libc and run rtld main */ |
__main(pcb); |
kputint(0x44); |
// 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 */ |
); |
} |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/runtime.c |
---|
0,0 → 1,77 |
/* |
* 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> |
static void kputint(unsigned i) |
{ |
// unsigned dummy; |
// asm volatile ( |
// "movl $31, %%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; |
//} |
/** @} |
*/ |
/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 __entry |
.hidden __bootstrap |
.type __entry, @function |
## Rtld entry point |
# |
# %ebx contains the PCB pointer |
# |
__entry: |
# Pass the PCB pointer to __bootstrap as the first argument |
pushl %ebx |
call __bootstrap |
/branches/dynload/uspace/lib/rtld/arch/ia32/Makefile.inc |
---|
27,7 → 27,11 |
# |
CFLAGS += -D__32_BITS__ |
LFLAGS += -e __entry |
ARCH_SOURCES := \ |
arch/$(ARCH)/src/entry.s \ |
arch/$(ARCH)/src/bootstrap.c \ |
arch/$(ARCH)/src/runtime.c \ |
arch/$(ARCH)/src/reloc.c \ |
arch/$(ARCH)/src/start.c |
arch/$(ARCH)/src/start.c \ |
/branches/dynload/uspace/lib/rtld/include/rtld.h |
---|
61,6 → 61,8 |
link_t modules_head; |
} runtime_env_t; |
void _rtld_main(void); |
extern runtime_env_t runtime_env; |
#endif |
/branches/dynload/uspace/lib/rtld/rtld.c |
---|
49,7 → 49,7 |
void program_run(void *entry, pcb_t *pcb); |
static void rtld_main(void) |
void _rtld_main(void) |
{ |
static module_t prog; |
// module_t *rtld; |
75,6 → 75,7 |
/* Initialize list of loaded modules */ |
list_initialize(&runtime_env.modules_head); |
list_append(&prog.modules_link, &runtime_env.modules_head); |
// list_append(&rtld->modules_link, &runtime_env.modules_head); |
/* Pointer to program module. Used as root of the dependency graph */ |
runtime_env.program = &prog; |
97,11 → 98,12 |
/* |
* Finally, run the main program. |
*/ |
DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry); |
DPRINTF("Run program.. (at 0x%x)\n", (uintptr_t)__pcb->entry); |
#ifndef RTLD_DEBUG |
close_console(); |
#endif |
//__pcb->entry(); |
program_run(__pcb->entry, __pcb); |
} |
108,9 → 110,21 |
/** Fake main to satisfy dependency from libc */ |
int main(int argc, char *argv[]) |
{ |
rtld_main(); |
return 0; |
} |
/* |
typedef void (*ep2)(void *); |
void program_run(void *entry, pcb_t *pcb) |
{ |
asm ( |
// "xorl %%ebx, %%ebx\n" |
// "movl 0(%%ebx), %%ecx\n" |
"mov %%eax, %%ebx\n" |
"jmp *%0\n" |
:: "m" (entry), "a" (pcb) |
); |
}*/ |
/** @} |
*/ |