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

1 files changed, 82 insertions, 0 deletions

diff --git a/src/arch/arm/v456/addressing.c b/src/arch/arm/v456/addressing.c
new file mode 100644
index 0000000..22ce11a
--- /dev/null
+++ b/src/arch/arm/v456/addressing.c
@@ -0,0 +1,82 @@
+
+/* 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;
+
+}