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Diffstat (limited to 'src/arch/arm/v7/post.c')
| -rw-r--r-- | src/arch/arm/v7/post.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/arch/arm/v7/post.c b/src/arch/arm/v7/post.c new file mode 100644 index 0000000..8ba12d8 --- /dev/null +++ b/src/arch/arm/v7/post.c @@ -0,0 +1,216 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * post.c - traitements complémentaires à la phase de désassemblage + * + * Copyright (C) 2014 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * OpenIDA is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * OpenIDA is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "post.h" + + + + + +#include "../../target.h" + + + + + +/****************************************************************************** +* * +* Paramètres : instr = instruction ARMv7 à traiter. * +* format = acès aux données du binaire d'origine. * +* * +* Description : Complète un désassemblage accompli pour une instruction. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void post_process_thumb_instruction_bl(GArchInstruction *instr, GBinFormat *format) +{ + + + const mrange_t *range; + + virt_t pc; + + + + + + GArchOperand *op; + vmpa_t val; + GArchOperand *new; + + vmpa2t target; + mrange_t trange; + VMPA_BUFFER(loc); + char name[5 + VMPA_MAX_LEN]; + GBinRoutine *routine; /* Nouvelle routine trouvée */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + + + + + range = g_arch_instruction_get_range(instr); + + pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */; + printf(" -- PC = 0x%x\n", (unsigned int)pc); + + + op = g_arch_instruction_get_operand(instr, 0); + + g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val); + + printf(" -> %llx = %lld ==>> 0x%x\n", val, val, (unsigned int)(pc + val)); + + + + new = g_target_operand_new(MDS_32_BITS, pc + val); + + if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format)) + { + init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val); + init_mrange(&trange, &target, 0); + + vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL); + snprintf(name, sizeof(name), "loc_%s", loc + 2); + + routine = g_binary_routine_new(); + g_binary_routine_set_name(routine, strdup(name)); + //routine = try_to_demangle_routine(name); + + g_binary_routine_set_range(routine, &trange); + + symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0); + g_binary_symbol_attach_routine(symbol, routine); + g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol); + + + + g_target_operand_resolve(G_TARGET_OPERAND(new), format); + + + } + + + g_arch_instruction_replace_operand(instr, new, op); + //g_arch_instruction_attach_extra_operand(result, new); + + + +} + + + + + +/****************************************************************************** +* * +* Paramètres : instr = instruction ARMv7 à traiter. * +* format = acès aux données du binaire d'origine. * +* * +* Description : Complète un désassemblage accompli pour une instruction. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void post_process_thumb_instruction_blx(GArchInstruction *instr, GBinFormat *format) +{ + + + + + + const mrange_t *range; + + virt_t pc; + + + + GArchOperand *op; + vmpa_t val; + GArchOperand *new; + + vmpa2t target; + mrange_t trange; + VMPA_BUFFER(loc); + char name[5 + VMPA_MAX_LEN]; + GBinRoutine *routine; /* Nouvelle routine trouvée */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + + + + range = g_arch_instruction_get_range(instr); + + pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */; + + printf(" -- PC = 0x%x -> 0x%x\n", (unsigned int)pc, (unsigned int)pc - pc % 4); + pc = pc - pc % 4; + + op = g_arch_instruction_get_operand(instr, 0); + + g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val); + + printf(" -> %llx = %lld ==>> 0x%x\n", val, val, (unsigned int)(pc + val)); + + + + new = g_target_operand_new(MDS_32_BITS, pc + val); + + if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format)) + { + init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val); + init_mrange(&trange, &target, 0); + + vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL); + snprintf(name, sizeof(name), "loc_%s", loc + 2); + + routine = g_binary_routine_new(); + g_binary_routine_set_name(routine, strdup(name)); + //routine = try_to_demangle_routine(name); + + g_binary_routine_set_range(routine, &trange); + + symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0); + g_binary_symbol_attach_routine(symbol, routine); + g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol); + + + + g_target_operand_resolve(G_TARGET_OPERAND(new), format); + + + } + + g_arch_instruction_replace_operand(instr, new, op); + //g_arch_instruction_attach_extra_operand(result, new); + + + + +} + |