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/instruction.c | |
parent | 23abef53590bf3dd6f88ff4dbe81e306abfa4386 (diff) |
Created a plugin for the ARM support.
Diffstat (limited to 'plugins/arm/instruction.c')
-rw-r--r-- | plugins/arm/instruction.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/plugins/arm/instruction.c b/plugins/arm/instruction.c new file mode 100644 index 0000000..3a7af7f --- /dev/null +++ b/plugins/arm/instruction.c @@ -0,0 +1,274 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * instruction.c - gestion des instructions de la ARM + * + * Copyright (C) 2013-2017 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 "instruction.h" + + +#include <malloc.h> +#include <string.h> + + +#include <common/extstr.h> + + +#include "instruction-int.h" + + + +/* Initialise la classe des instructions ARM. */ +static void g_arm_instruction_class_init(GArmInstructionClass *); + +/* Initialise une instance de instruction ARM. */ +static void g_arm_instruction_init(GArmInstruction *); + +/* Supprime toutes les références externes. */ +static void g_arm_instruction_dispose(GArmInstruction *); + +/* Procède à la libération totale de la mémoire. */ +static void g_arm_instruction_finalize(GArmInstruction *); + +/* Fournit le nom humain de l'instruction manipulée. */ +static const char *g_arm_instruction_get_keyword(GArmInstruction *, AsmSyntax); + + + +/* Indique le type défini pour une représentation d'une instruction ARM. */ +G_DEFINE_TYPE(GArmInstruction, g_arm_instruction, G_TYPE_ARCH_INSTRUCTION); + + +/****************************************************************************** +* * +* Paramètres : klass = classe à initialiser. * +* * +* Description : Initialise la classe des instructions ARM. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_arm_instruction_class_init(GArmInstructionClass *klass) +{ + GObjectClass *object_class; /* Autre version de la classe */ + GArchInstructionClass *instr; /* Encore une autre vision... */ + + object_class = G_OBJECT_CLASS(klass); + instr = G_ARCH_INSTRUCTION_CLASS(klass); + + object_class->dispose = (GObjectFinalizeFunc/* ! */)g_arm_instruction_dispose; + object_class->finalize = (GObjectFinalizeFunc)g_arm_instruction_finalize; + + instr->get_keyword = (get_instruction_keyword_fc)g_arm_instruction_get_keyword; + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instance à initialiser. * +* * +* Description : Initialise une instance d'instruction ARM. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_arm_instruction_init(GArmInstruction *instr) +{ + instr->cond = ACC_AL; + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instance d'objet GLib à traiter. * +* * +* Description : Supprime toutes les références externes. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_arm_instruction_dispose(GArmInstruction *instr) +{ + G_OBJECT_CLASS(g_arm_instruction_parent_class)->dispose(G_OBJECT(instr)); + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instance d'objet GLib à traiter. * +* * +* Description : Procède à la libération totale de la mémoire. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_arm_instruction_finalize(GArmInstruction *instr) +{ + if (instr->suffix != NULL) + free(instr->suffix); + + if (instr->cached_keyword != NULL) + free(instr->cached_keyword); + + G_OBJECT_CLASS(g_arm_instruction_parent_class)->finalize(G_OBJECT(instr)); + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instruction quelconque à modifier. * +* suffix = chaîne de caractères fournie en complément. * +* * +* Description : Etend la désignation d'un nom d'instruction. * +* * +* Retour : true. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool g_arm_instruction_extend_keyword(GArmInstruction *instr, const char *suffix) +{ + instr->suffix = stradd(instr->suffix, suffix); + + if (instr->cached_keyword != NULL) + { + free(instr->cached_keyword); + instr->cached_keyword = NULL; + } + + return true; + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instruction d'assemblage à consulter. * +* syntax = type de représentation demandée. * +* * +* Description : Fournit le nom humain de l'instruction manipulée. * +* * +* Retour : Mot clef de bas niveau. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static const char *g_arm_instruction_get_keyword(GArmInstruction *instr, AsmSyntax syntax) +{ + if (instr->cached_keyword == NULL) + { + instr->cached_keyword = strdup(instr->keyword); + + if (instr->suffix != NULL) + instr->cached_keyword = stradd(instr->cached_keyword, instr->suffix); + + } + + return instr->cached_keyword; + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instruction ARM à mettre à jour. * +* cond = condition d'exécution de l'instruction. * +* * +* Description : Définit les conditions d'exécution d'une instruction ARM. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool g_arm_instruction_set_cond(GArmInstruction *instr, ArmCondCode cond) +{ + bool result; /* Bilan à retourner */ + const char *suffix; /* Eventuelle marque à ajouter */ + + instr->cond = cond; + + switch (cond) + { + case ACC_EQ: suffix = "eq"; break; + case ACC_NE: suffix = "ne"; break; + case ACC_HS: suffix = "hs"; break; + case ACC_LO: suffix = "lo"; break; + case ACC_MI: suffix = "mi"; break; + case ACC_PL: suffix = "pl"; break; + case ACC_VS: suffix = "vs"; break; + case ACC_VC: suffix = "vc"; break; + case ACC_HI: suffix = "hi"; break; + case ACC_LS: suffix = "ls"; break; + case ACC_GE: suffix = "ge"; break; + case ACC_LT: suffix = "lt"; break; + case ACC_GT: suffix = "gt"; break; + case ACC_LE: suffix = "le"; break; + case ACC_AL: suffix = NULL; break; + case ACC_NV: suffix = "nv"; break; + } + + if (suffix != NULL) + result = g_arm_instruction_extend_keyword(instr, suffix); + + else + result = true; + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : instr = instruction ARM à consulter. * +* * +* Description : Indique les conditions d'exécution d'une instruction ARM. * +* * +* Retour : Condition d'exécution de l'instruction. * +* * +* Remarques : - * +* * +******************************************************************************/ + +ArmCondCode g_arm_instruction_get_cond(const GArmInstruction *instr) +{ + return instr->cond; + +} |