| /branches/dynload/uspace/lib/rtld/arch/ia32/bootstrap.c |
|---|
| File deleted |
| /branches/dynload/uspace/lib/rtld/arch/ia32/runtime.c |
|---|
| File deleted |
| /branches/dynload/uspace/lib/rtld/arch/ia32/entry.s |
|---|
| File deleted |
| /branches/dynload/uspace/lib/rtld/arch/ia32/include/elf_dyn.h |
|---|
| 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 */ |
| ); |
| } |
| /** @} |
| */ |