| 0,0 → 1,118 |
|---|
| /* |
| * 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 <stdio.h> |
| #include <string.h> |
| |
| #include <elf_dyn.h> |
| #include <dynamic.h> |
| |
| void dynamic_parse(elf_dyn_t *dyn_ptr, size_t bias, dyn_info_t *info) |
| { |
| elf_dyn_t *dp = dyn_ptr; |
| |
| void *d_ptr; |
| elf_word d_val; |
| |
| elf_word soname_idx; |
| elf_word rpath_idx; |
| |
| printf("memset\n"); |
| memset(info, 0, sizeof(info)); |
| |
| printf("pass 1\n"); |
| while (dp->d_tag != DT_NULL) { |
| d_ptr = (void *)((uint8_t *)dp->d_un.d_ptr + bias); |
| d_val = dp->d_un.d_val; |
| |
| switch (dp->d_tag) { |
| |
| case DT_PLTRELSZ: info->plt_rel_sz = d_val; break; |
| case DT_PLTGOT: info->plt_got = d_ptr; break; |
| case DT_HASH: info->hash = d_ptr; break; |
| case DT_STRTAB: info->str_tab = d_ptr; break; |
| case DT_SYMTAB: info->sym_tab = d_ptr; break; |
| case DT_RELA: info->rela = d_ptr; break; |
| case DT_RELASZ: info->rela_sz = d_val; break; |
| case DT_RELAENT: info->rela_ent = d_val; break; |
| case DT_STRSZ: info->str_sz = d_val; break; |
| case DT_SYMENT: info->sym_ent = d_val; break; |
| case DT_INIT: info->init = d_ptr; break; |
| case DT_FINI: info->fini = d_ptr; break; |
| case DT_SONAME: soname_idx = d_val; break; |
| case DT_RPATH: rpath_idx = d_val; break; |
| case DT_SYMBOLIC: info->symbolic = true; break; |
| case DT_REL: info->rel = d_ptr; break; |
| case DT_RELSZ: info->rel_sz = d_val; break; |
| case DT_RELENT: info->rel_ent = d_val; break; |
| case DT_PLTREL: info->plt_rel = d_val; break; |
| case DT_TEXTREL: info->text_rel = true; break; |
| case DT_JMPREL: info->jmp_rel = d_ptr; break; |
| case DT_BIND_NOW: info->bind_now = true; break; |
| |
| default: break; |
| } |
| |
| ++dp; |
| } |
| |
| info->soname = info->str_tab + soname_idx; |
| info->rpath = info->str_tab + rpath_idx; |
| |
| /* |
| * Now that we have a pointer to the string table, |
| * we can parse DT_NEEDED fields (which contain offsets into it). |
| */ |
| |
| printf("pass 2\n"); |
| dp = dyn_ptr; |
| while (dp->d_tag != DT_NULL) { |
| d_val = dp->d_un.d_val; |
| |
| switch (dp->d_tag) { |
| case DT_NEEDED: |
| printf("needed:'%s'\n", info->str_tab + d_val); |
| break; |
| |
| default: break; |
| } |
| |
| ++dp; |
| } |
| } |
| |
| /** @} |
| */ |