diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2017-12-02 11:04:35 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2017-12-02 11:04:35 (GMT) |
commit | 2c988d3ec52cc4c949a35aca7ef335dac773df92 (patch) | |
tree | fe650d2fc8ddceb606abdf0d2e14e5ef6596be82 /plugins/arm/v7/post.c | |
parent | 23abef53590bf3dd6f88ff4dbe81e306abfa4386 (diff) |
Created a plugin for the ARM support.
Diffstat (limited to 'plugins/arm/v7/post.c')
-rw-r--r-- | plugins/arm/v7/post.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/plugins/arm/v7/post.c b/plugins/arm/v7/post.c new file mode 100644 index 0000000..10941a3 --- /dev/null +++ b/plugins/arm/v7/post.c @@ -0,0 +1,99 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * post.c - traitements complémentaires à la phase de désassemblage + * + * Copyright (C) 2014-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide 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. + * + * Chrysalide 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 <arch/target.h> + + + +/****************************************************************************** +* * +* Paramètres : instr = instruction ARMv7 à traiter. * +* proc = représentation de l'architecture utilisée. * +* context = contexte associé à la phase de désassemblage. * +* format = accès aux données du binaire d'origine. * +* * +* Description : Complète un désassemblage accompli pour une instruction. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void post_process_ldr_instructions(GArchInstruction *instr, GArchProcessor *proc, GProcContext *context, GExeFormat *format) +{ + GArchOperand *op; /* Opérande numérique en place */ + uint32_t addr; /* Adresse visée par le saut */ + GBinFormat *bfmt; /* Version basique du format */ + GTargetOperand *new; /* Instruction de ciblage */ + vmpa2t target; /* Défination finale précise */ + mrange_t trange; /* Etendue du symbole à créer */ + VMPA_BUFFER(loc); /* Espace pour une conversion */ + char name[5 + VMPA_MAX_LEN]; /* Etiquette à constituer */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + + g_arch_instruction_lock_operands(instr); + + op = _g_arch_instruction_get_operand(instr, 1); + + if (!G_IS_IMM_OPERAND(op)) + goto ppli_release; + + if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr) + && g_exe_format_translate_address_into_vmpa(format, addr, &target)) + { + bfmt = G_BIN_FORMAT(format); + + new = G_TARGET_OPERAND(g_target_operand_new(MDS_32_BITS_UNSIGNED, &target)); + + if (!g_target_operand_resolve(new, bfmt, true)) + { + addr &= ~0x1; + + init_mrange(&trange, &target, 0); + + vmpa2_virt_to_string(&target, MDS_UNDEFINED, loc, NULL); + snprintf(name, sizeof(name), "loc_%s", loc + 2); + + symbol = g_binary_symbol_new(&trange, STP_CODE_LABEL); + g_binary_symbol_set_alt_label(symbol, name); + g_binary_format_add_symbol(bfmt, symbol); + + g_target_operand_resolve(new, bfmt, true); + + } + + _g_arch_instruction_replace_operand(instr, op, G_ARCH_OPERAND(new)); + + } + + ppli_release: + + g_object_unref(G_OBJECT(op)); + + g_arch_instruction_unlock_operands(instr); + +} |