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authorCyrille Bagard <nocbos@gmail.com>2008-07-29 22:31:55 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2008-07-29 22:31:55 (GMT)
commit57758c2cd11938e3e4c6e45b983cee4c2269ff44 (patch)
treeade6e434f0a5e68dec379c20432a09dd1cc75a1a /src/arch/x86/op_inc.c
parent4d004094424bb1fc52082f2e442c4c43a5525fe1 (diff)
Loaded the executable part of an ELF file.
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@10 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/arch/x86/op_inc.c')
-rw-r--r--src/arch/x86/op_inc.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/arch/x86/op_inc.c b/src/arch/x86/op_inc.c
new file mode 100644
index 0000000..dd21471
--- /dev/null
+++ b/src/arch/x86/op_inc.c
@@ -0,0 +1,78 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * op_inc.c - décodage des incrémentations
+ *
+ * Copyright (C) 2008 Cyrille Bagard
+ *
+ * This file is part of OpenIDA.
+ *
+ * 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 <malloc.h>
+
+
+#include "../instruction-int.h"
+#include "opcodes.h"
+#include "operand.h"
+
+
+
+/******************************************************************************
+* *
+* Paramètres : data = flux de données à analyser. *
+* pos = position courante dans ce flux. [OUT] *
+* len = taille totale des données à analyser. *
+* *
+* Description : Décode une instruction de type 'inc' (16 ou 32 bits). *
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+asm_x86_instr *read_instr_inc_1632(const uint8_t *data, off_t *pos, off_t len)
+{
+ asm_x86_instr *result; /* Instruction à retourner */
+ bool is_reg32; /* Implique un registre 32 bits*/
+ asm_x86_operand *reg; /* Registre de destination */
+
+ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr));
+
+ /* Utilisation des registres 32 bits ? */
+ is_reg32 = (data[*pos] != 0x66);
+ if (!is_reg32)
+ {
+ (*pos)++;
+ }
+
+ ASM_INSTRUCTION(result)->opcode = data[*pos];
+
+ reg = x86_create_reg1632_operand(data[(*pos)++], is_reg32, 0x40);
+ if (reg == NULL)
+ {
+ free(result);
+ return NULL;
+ }
+
+ ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(1, sizeof(asm_operand *));
+ ASM_INSTRUCTION(result)->operands_count = 1;
+
+ ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg);
+
+ return result;
+
+}