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authorCyrille Bagard <nocbos@gmail.com>2013-06-30 13:01:38 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2013-06-30 13:01:38 (GMT)
commite5314b83cf2521f4a1fee5d3cbb5011d7ac7bff7 (patch)
tree3af6d5b430d3a07753e273e9ddb1ff656e706661 /src/arch/arm/v456/addressing.c
parent0f3bbcb376ee4f76142ac4ddf729403fecac2641 (diff)
Provided first basic support for a few ARM instructions.
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@354 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/arch/arm/v456/addressing.c')
-rw-r--r--src/arch/arm/v456/addressing.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/arch/arm/v456/addressing.c b/src/arch/arm/v456/addressing.c
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+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * addressing.c - prise en compte des modes d'adressage ARM v4/5/6
+ *
+ * Copyright (C) 2013 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 "addressing.h"
+
+
+#include "encoding.h"
+#include "register.h"
+#include "operands/content.h"
+#include "operands/register.h"
+
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction à compléter. *
+* data = mot de données contenant les indications. *
+* format = format du binaire manipulé. *
+* *
+* Description : Charge les opérandes selon le mode d'adressage § A5.2.1. *
+* *
+* Retour : true si le décodage s'est bien déroulé. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool build_v456_operands_with_load_immediate_offset(GArmV456Instruction *instr, uint32_t data, const GExeFormat *format)
+{
+ uint8_t rd_index; /* Indice du registre Rd */
+ GArmV456Register *rd_reg; /* Registre Rd en place */
+ GArchOperand *op; /* Opérande à ajouter */
+ uint8_t rn_index; /* Indice du registre Rn */
+ GArmV456Register *rn_reg; /* Registre Rn en place */
+ uint16_t value; /* Valeur de décallage */
+ GImmOperand *offset; /* Opérande de décallage */
+ bool add; /* Utilisation du décallage */
+
+ /* Destination */
+
+ rd_index = ARM_V456_REG_RD(data);
+ rd_reg = g_armv456_register_new(rd_index);
+
+ op = g_armv456_register_operand_new_from_existing(rd_reg);
+ g_arch_instruction_attach_extra_operand(G_ARCH_INSTRUCTION(instr), op);
+
+ /* Source */
+
+ rn_index = ARM_V456_REG_RN(data);
+ rn_reg = g_armv456_register_new(rn_index);
+
+ value = ARM_V456_ADDR_MODE(data);
+ offset = G_IMM_OPERAND(g_imm_operand_new_from_value(MDS_16_BITS_UNSIGNED, value));
+
+ add = (data & ARM_V456_BIT_U);
+
+ op = g_armv456_content_operand_new(rn_reg, offset, add);
+ g_arch_instruction_attach_extra_operand(G_ARCH_INSTRUCTION(instr), op);
+
+ return true;
+
+}