diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2016-12-14 23:30:12 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2016-12-14 23:30:12 (GMT) |
commit | db1a6171007a6641a4659392c9bcc05670396643 (patch) | |
tree | d011651b8b73b2a28d01e416d613d63bf5b0b4e6 /src/arch/instriter.c | |
parent | ba6ca32c37c5db2582a015ed15d6ba128c36968e (diff) |
Provided an iterator for instructions.
Diffstat (limited to 'src/arch/instriter.c')
-rw-r--r-- | src/arch/instriter.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/arch/instriter.c b/src/arch/instriter.c new file mode 100644 index 0000000..0f33998 --- /dev/null +++ b/src/arch/instriter.c @@ -0,0 +1,135 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * instriter.h - prototypes pour le parcours simplifié d'un ensemble d'instructions + * + * Copyright (C) 2016 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 "instriter.h" + + +#include <malloc.h> + + +#include "processor.h" + + + +/* Suivi d'un parcours d'instructions */ +typedef struct _instr_iter_t +{ + GArchProcessor *proc; /* Conteneur associé */ + unsigned int stamp; /* Suivi d'évolutions externes */ + + size_t index; /* Instruction courante */ + +} instr_iter_t; + + + +/****************************************************************************** +* * +* Paramètres : proc = processeur recensant diverses instructions. * +* index = indice de la première instruction à fournir. * +* * +* Description : Construit un itérateur pour parcourir des instructions. * +* * +* Retour : Itérateur prêt à emploi. * +* * +* Remarques : - * +* * +******************************************************************************/ + +instr_iter_t *create_instruction_iterator(GArchProcessor *proc, size_t index) +{ + instr_iter_t *result; /* Structure à retourner */ + + result = (instr_iter_t *)malloc(sizeof(instr_iter_t)); + + g_object_ref(G_OBJECT(proc)); + + result->proc = proc; + result->stamp = g_arch_processor_get_stamp(proc); + + result->index = index; + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : iter = itérateur à traiter. * +* * +* Description : Détruit un itérateur mis en place. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void delete_instruction_iterator(instr_iter_t *iter) +{ + g_object_unref(G_OBJECT(iter->proc)); + + free(iter); + +} + + +/****************************************************************************** +* * +* Paramètres : iter = itérateur à manipuler. * +* * +* Description : Fournit l'instruction qui en suit une autre. * +* * +* Retour : Instruction suivante trouvée, ou NULL. * +* * +* Remarques : - * +* * +******************************************************************************/ + +GArchInstruction *get_instruction_iterator_next(instr_iter_t *iter) +{ + GArchInstruction *result; /* Résultat à retourner */ + + g_arch_processor_lock(iter->proc); + + if (iter->stamp != g_arch_processor_get_stamp(iter->proc)) + result = NULL; + + else + { + if (iter->index < g_arch_processor_count_disassembled_instructions(iter->proc)) + result = g_arch_processor_get_disassembled_instruction(iter->proc, iter->index); + else + result = NULL; + + if (result != NULL) + iter->index++; + + } + + g_arch_processor_unlock(iter->proc); + + return result; + +} |