diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2015-10-13 23:30:30 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2015-10-13 23:30:30 (GMT) |
commit | 18beadb4192144b00c06769645befb17ae1ce98e (patch) | |
tree | 9d29be95f3343bf8126ca99c42907242ceb57714 /src/format/elf | |
parent | 7800159c1dd6538f0ee9d026cf3f121a488dd647 (diff) |
Kept all information about real addresses for routine symbols (ARM vs Thumb).
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@593 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/format/elf')
-rw-r--r-- | src/format/elf/helper_arm.c | 14 | ||||
-rw-r--r-- | src/format/elf/symbols.c | 74 |
2 files changed, 59 insertions, 29 deletions
diff --git a/src/format/elf/helper_arm.c b/src/format/elf/helper_arm.c index cd2d922..f47df5d 100644 --- a/src/format/elf/helper_arm.c +++ b/src/format/elf/helper_arm.c @@ -63,7 +63,9 @@ bool load_elf_arm_relocated_symbols(GElfFormat *format, const elf_shdr *relxxx, - virt_t virt; /* Adresse en mémoire virtuelle */ + virt_t virt; /* Adresse en mémoire virtuelle*/ + virt_t final_virt; /* Adresse virtuelle retenue */ + bool status; /* Bilan d'une opération */ vmpa2t addr; /* Localisation d'une routine */ mrange_t range; /* Couverture mémoire associée */ GBinRoutine *routine; /* Nouvelle routine trouvée */ @@ -100,14 +102,14 @@ bool load_elf_arm_relocated_symbols(GElfFormat *format, const elf_shdr *relxxx, { case R_ARM_JUMP_SLOT: - virt = ELF_SYM(format, sym, st_value); - - if (virt == 0) continue; + final_virt = virt & ~0x1; + + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr); + if (!status) continue; - init_vmpa(&addr, VMPA_NO_PHYSICAL, virt); init_mrange(&range, &addr, 0); routine = try_to_demangle_routine(name); @@ -118,6 +120,8 @@ bool load_elf_arm_relocated_symbols(GElfFormat *format, const elf_shdr *relxxx, g_binary_symbol_attach_routine(symbol, routine); g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol); + /* Comptabilisation pour le désassemblage brut */ + g_binary_format_register_code_point(G_BIN_FORMAT(format), virt, false); /* diff --git a/src/format/elf/symbols.c b/src/format/elf/symbols.c index c3c2ecd..fa7cb8f 100644 --- a/src/format/elf/symbols.c +++ b/src/format/elf/symbols.c @@ -168,26 +168,25 @@ bool load_elf_symbols(GElfFormat *format) static void register_elf_entry_point(GElfFormat *format, virt_t vaddr, phys_t len, GBinRoutine *routine) { - GBinFormat *base; /* Version basique de l'instance */ - vmpa2t addr; /* Localisation d'une routine */ - mrange_t range; /* Couverture mémoire associée */ - GBinSymbol *symbol; /* Nouveau symbole construit */ - - base = G_BIN_FORMAT(format); + GBinFormat *base; /* Version basique du format */ + virt_t final_vaddr; /* Adresse virtuelle retenue */ + bool status; /* Bilan d'une opération */ + vmpa2t addr; /* Localisation d'une routine */ + mrange_t range; /* Couverture mémoire associée */ + GBinSymbol *symbol; /* Nouveau symbole construit */ - /* Comptabilisation pour le désassemblage brut */ + /* Localisation complète du symbole */ - base->entry_points = (virt_t *)realloc(base->entry_points, ++base->ep_count * sizeof(virt_t)); + if (ELF_HDR(format, format->header, e_machine) == EM_ARM) + final_vaddr = vaddr & ~0x1; + else + final_vaddr = vaddr; - base->entry_points[base->ep_count - 1] = vaddr; + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_vaddr, &addr); + if (!status) return; /* Comptabilisation en tant que symbole */ - if (ELF_HDR(format, format->header, e_machine) == EM_ARM) - vaddr &= ~0x1; - - init_vmpa(&addr, VMPA_NO_PHYSICAL, vaddr); - if (g_binary_format_find_symbol_at(G_BIN_FORMAT(format), &addr, &symbol)) { g_object_unref(G_OBJECT(routine)); @@ -200,6 +199,8 @@ static void register_elf_entry_point(GElfFormat *format, virt_t vaddr, phys_t le } else { + base = G_BIN_FORMAT(format); + init_mrange(&range, &addr, len); g_binary_routine_set_range(routine, &range); @@ -208,6 +209,9 @@ static void register_elf_entry_point(GElfFormat *format, virt_t vaddr, phys_t le g_binary_symbol_attach_routine(symbol, routine); _g_binary_format_add_symbol(base, symbol, false); + /* Comptabilisation pour le désassemblage brut */ + g_binary_format_register_code_point(base, vaddr, true); + } } @@ -513,6 +517,7 @@ static bool load_elf_internal_symbols(GElfFormat *format) /* Charge tous les symboles définis dans une section */ bool add_all_symbols_from_section(GElfFormat *format, const elf_shdr *section, bool use_virt) { + GBinFormat *base; /* Version basique du format */ elf_shdr strtab; /* Section .strtab trouvée */ bool has_strtab; /* Présence de cette section */ phys_t start; /* Début de la zone à traiter */ @@ -520,6 +525,7 @@ static bool load_elf_internal_symbols(GElfFormat *format) phys_t iter; /* Boucle de parcours */ elf_sym sym; /* Symbole aux infos visées */ virt_t virt; /* Adresse virtuelle */ + virt_t final_virt; /* Adresse virtuelle retenue */ vmpa2t addr; /* Localisation d'une routine */ mrange_t range; /* Couverture mémoire associée */ const char *name; /* Nom du symbole trouvé */ @@ -527,6 +533,8 @@ static bool load_elf_internal_symbols(GElfFormat *format) GBinRoutine *routine; /* Nouvelle routine trouvée */ GBinSymbol *symbol; /* Nouveau symbole construit */ + base = G_BIN_FORMAT(format); + has_strtab = find_elf_section_by_index(format, ELF_SHDR(format, *section, sh_link), &strtab); get_elf_section_content(format, section, &start, &size, NULL); @@ -562,15 +570,6 @@ static bool load_elf_internal_symbols(GElfFormat *format) virt = ELF_SYM(format, sym, st_value); - if (ELF_HDR(format, format->header, e_machine) == EM_ARM) - virt &= ~0x1; - - if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), virt, &addr)) - continue; - - - - init_mrange(&range, &addr, ELF_SYM(format, sym, st_size)); //init_mrange(&range, &addr, 0); @@ -586,6 +585,14 @@ static bool load_elf_internal_symbols(GElfFormat *format) { case STT_OBJECT: + /* Ajustement de la position */ + + if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), virt, &addr)) + { + symbol = NULL; + break; + } + /* Création d'un nom unique ? */ if (name != NULL) @@ -609,6 +616,21 @@ static bool load_elf_internal_symbols(GElfFormat *format) case STT_FUNC: + /* Ajustement de la position */ + + if (ELF_HDR(format, format->header, e_machine) == EM_ARM) + final_virt = virt & ~0x1; + else + final_virt = virt; + + if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr)) + { + symbol = NULL; + break; + } + + init_mrange(&range, &addr, ELF_SYM(format, sym, st_size)); + /* Création d'un nom unique ? */ if (name != NULL) @@ -635,6 +657,10 @@ static bool load_elf_internal_symbols(GElfFormat *format) symbol = g_binary_symbol_new(STP_ROUTINE); g_binary_symbol_attach_routine(symbol, routine); + /* Comptabilisation pour le désassemblage brut */ + + g_binary_format_register_code_point(base, virt, false); + break; default: @@ -644,7 +670,7 @@ static bool load_elf_internal_symbols(GElfFormat *format) } if (symbol != NULL) - _g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol, false); + _g_binary_format_add_symbol(base, symbol, false); } |