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authorCyrille Bagard <nocbos@gmail.com>2009-05-31 20:58:20 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2009-05-31 20:58:20 (GMT)
commit8724afdc73e0ddad86f46de1a3fbe0254575a76e (patch)
treede666b66e154c6c6453807d3fa4272efb6877a91 /src/arch/mips/op_jump.c
parent0b7d7f26c745ff0f52e9e483a0980351368ca824 (diff)
Supported a new architecture (MIPS).
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@67 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/arch/mips/op_jump.c')
-rw-r--r--src/arch/mips/op_jump.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/src/arch/mips/op_jump.c b/src/arch/mips/op_jump.c
new file mode 100644
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--- /dev/null
+++ b/src/arch/mips/op_jump.c
@@ -0,0 +1,114 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * op_jump.c - décodage des sauts inconditionnels
+ *
+ * Copyright (C) 2009 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 "opcodes.h"
+
+
+#include "../instruction-int.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. *
+* addr = adresse virtuelle de l'instruction. *
+* proc = architecture ciblée par le désassemblage. *
+* *
+* Description : Décode une instruction de type 'jr rs'. *
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GArchInstruction *mips_read_instr_jump_register(const bin_t *data, off_t *pos, off_t len, vmpa_t addr, const GMipsProcessor *proc)
+{
+ GArchInstruction *result; /* Instruction à retourner */
+
+ result = g_mips_instruction_new(MOP_JR);
+
+ if (!mips_read_n_operands(result, data, pos, len, 1, MIPS_OTP_RS))
+ {
+ /* TODO free(result);*/
+ return NULL;
+ }
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : data = flux de données à analyser. *
+* pos = position courante dans ce flux. [OUT] *
+* len = taille totale des données à analyser. *
+* addr = adresse virtuelle de l'instruction. *
+* proc = architecture ciblée par le désassemblage. *
+* *
+* Description : Décode une instruction de type 'jalr[.hb] [rd, ]rs'. *
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GArchInstruction *mips_read_instr_jump_and_link_register(const bin_t *data, off_t *pos, off_t len, vmpa_t addr, const GMipsProcessor *proc)
+{
+ GArchInstruction *result; /* Instruction à retourner */
+ off_t tmp; /* Pour ne pas toucher à 'pos' */
+ uint32_t code; /* Code binaire à décoder */
+ GArchOperand *operand; /* Opérande à analyser */
+ const mips_register *reg; /* Registre implicite ? */
+
+ tmp = *pos;
+
+ if (!read_u32(&code, data, &tmp, len, SRE_LITTLE/* FIXME */))
+ return NULL;
+
+ if (code & 0x400) result = g_mips_instruction_new(MOP_JALR_HB);
+ else result = g_mips_instruction_new(MOP_JALR);
+
+ if (!mips_read_n_operands(result, data, pos, len, 2, MIPS_OTP_RD, MIPS_OTP_RS))
+ {
+ /* TODO free(result);*/
+ return NULL;
+ }
+
+ operand = G_ARCH_INSTRUCTION(result)->operands[0];
+ reg = g_mips_register_operand_get_register(G_MIPS_REGISTER_OPERAND(operand));
+
+ if (is_mips_register_return_address(reg))
+ {
+ g_arch_instruction_detach_operand(G_ARCH_INSTRUCTION(result), operand);
+ /* TODO free(operand);*/
+ }
+
+ return result;
+
+}