/* 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 .
*/
#include "post.h"
#include
#include "../../target.h"
/******************************************************************************
* *
* Paramètres : instr = instruction ARMv7 à traiter. *
* 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_branch_instructions(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
{
GArchOperand *op; /* Opérande numérique en place */
uint32_t addr; /* Adresse visée par le saut */
GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange;
VMPA_BUFFER(loc);
char name[5 + VMPA_MAX_LEN];
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
op = g_arch_instruction_get_operand(instr, 0);
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr))
{
new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
{
init_vmpa(&target, VMPA_NO_PHYSICAL, addr);
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);
}
}
/******************************************************************************
* *
* Paramètres : instr = instruction ARMv7 à traiter. *
* 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_branch_and_link_instructions(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
{
GArchOperand *op; /* Opérande numérique en place */
uint32_t addr; /* Adresse visée par le saut */
GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange;
VMPA_BUFFER(loc);
char name[5 + VMPA_MAX_LEN];
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
op = g_arch_instruction_get_operand(instr, 0);
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr))
{
new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
{
init_vmpa(&target, VMPA_NO_PHYSICAL, addr);
init_mrange(&trange, &target, 0);
vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
snprintf(name, sizeof(name), "sub_%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);
}
}
/******************************************************************************
* *
* Paramètres : instr = instruction ARMv7 à traiter. *
* 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_comp_and_branch_instructions(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
{
GArchOperand *op; /* Opérande numérique en place */
uint32_t addr; /* Adresse visée par le saut */
GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange;
VMPA_BUFFER(loc);
char name[5 + VMPA_MAX_LEN];
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
op = g_arch_instruction_get_operand(instr, 1);
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr))
{
new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
{
init_vmpa(&target, VMPA_NO_PHYSICAL, addr);
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);
}
}
/******************************************************************************
* *
* Paramètres : instr = instruction ARMv7 à traiter. *
* 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, GProcContext *context, GBinFormat *format)
{
GArchOperand *op; /* Opérande numérique en place */
uint32_t addr; /* Adresse visée par le saut */
GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange;
VMPA_BUFFER(loc);
char name[5 + VMPA_MAX_LEN];
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
op = g_arch_instruction_get_operand(instr, 1);
if (!G_IS_IMM_OPERAND(op)) return;
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr))
{
new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
{
addr &= ~0x1;
printf("RESOLVING FOR 0x%08x\n", (unsigned int)addr);
init_vmpa(&target, VMPA_NO_PHYSICAL, addr);
init_mrange(&trange, &target, 0);
vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
snprintf(name, sizeof(name), "loccc_%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);
}
else printf("RESOLVED FOR 0x%08x\n", (unsigned int)addr);
g_arch_instruction_replace_operand(instr, new, op);
}
else assert(0);
}