Created an instruction for the 'If Then Else' blocks.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@201 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

5 files changed, 106 insertions, 7 deletions

diff --git a/src/arch/dalvik/Makefile.am b/src/arch/dalvik/Makefile.am
index 3c58a0e..fbd041d 100644
--- a/src/arch/dalvik/Makefile.am
+++ b/src/arch/dalvik/Makefile.am
@@ -8,6 +8,7 @@ libarchdalvik_la_SOURCES =				\
 	dop_arithm.c						\
 	dop_array.c							\
 	dop_const.c							\
+	dop_if.c							\
 	dop_invoke.c						\
 	dop_ret.c							\
 	op_add.c							\
diff --git a/src/arch/dalvik/dop_array.c b/src/arch/dalvik/dop_array.c
index fa9f94f..94ca09a 100644
--- a/src/arch/dalvik/dop_array.c
+++ b/src/arch/dalvik/dop_array.c
@@ -34,7 +34,7 @@
 *  Paramètres  : instr = instruction d'origine à convertir.                   *
 *                ctx   = contexte de la phase de décompilation.               *
 *                                                                             *
-*  Description : Décompile une instruction de type 'array-length'.                   *
+*  Description : Décompile une instruction de type 'array-length'.            *
 *                                                                             *
 *  Retour      : Instruction mise en place ou NULL.                           *
 *                                                                             *
diff --git a/src/arch/dalvik/dop_if.c b/src/arch/dalvik/dop_if.c
new file mode 100644
index 0000000..3a9d8dd
--- /dev/null
+++ b/src/arch/dalvik/dop_if.c
@@ -0,0 +1,95 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * dop_array.c - décompilation des branchements conditionnels
+ *
+ * Copyright (C) 2010 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 "translate.h"
+
+
+#include "instruction.h"
+#include "../../decomp/expr/cond.h"
+#include "../../decomp/instr/ite.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : instr = instruction d'origine à convertir.                   *
+*                ctx   = contexte de la phase de décompilation.               *
+*                                                                             *
+*  Description : Décompile une instruction de comparaison d'opérandes.        *
+*                                                                             *
+*  Retour      : Instruction mise en place ou NULL.                           *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+GDecInstruction *dalvik_decomp_instr_if(const GArchInstruction *instr, GDecContext *ctx)
+{
+    GDecInstruction *result;                /* Instruction à retourner     */
+    CompSignType sign;                      /* Type d'opération menée      */
+    GArchOperand *operand;                  /* Opérande de l'instruction   */
+    GDecInstruction *op1;                   /* Premier opérande utilisé    */
+    GDecInstruction *op2;                   /* Second opérande utilisé     */
+    vmpa_t jmp;                             /* Adresse de saut             */
+    GDecInstruction *cond;                  /* Comparaison à restituer     */
+
+    switch (g_dalvik_instruction_get_opcode(G_DALVIK_INSTRUCTION(instr)))
+    {
+        case DOP_IF_EQ:
+            sign = CST_EQ;
+            break;
+        case DOP_IF_NE:
+            sign = CST_NE;
+            break;
+        case DOP_IF_LT:
+            sign = CST_LT;
+            break;
+        case DOP_IF_GE:
+            sign = CST_GE;
+            break;
+        case DOP_IF_GT:
+            sign = CST_GT;
+            break;
+        case DOP_IF_LE:
+            sign = CST_LE;
+            break;
+        default:
+            sign = CST_COUNT;
+            break;
+    }
+
+    operand = g_arch_instruction_get_operand(instr, 0);
+    op1 = g_dec_context_convert_register(ctx, operand);
+
+    operand = g_arch_instruction_get_operand(instr, 1);
+    op2 = g_dec_context_convert_register(ctx, operand);
+
+    operand = g_arch_instruction_get_operand(instr, 2);
+    jmp = 0x1234ull;/*g_dec_context_convert_register(ctx, operand);*/
+
+    cond = g_cond_expression_new(G_DEC_EXPRESSION(op1), sign, G_DEC_EXPRESSION(op2));
+    result = g_ite_instruction_new(G_DEC_EXPRESSION(cond), jmp, jmp);
+
+    return result;
+
+}
diff --git a/src/arch/dalvik/instruction.c b/src/arch/dalvik/instruction.c
index d23bbe5..051bbe2 100644
--- a/src/arch/dalvik/instruction.c
+++ b/src/arch/dalvik/instruction.c
@@ -110,12 +110,12 @@ static dalvik_instruction _instructions[DOP_COUNT] = {
     [DOP_CMPL_DOUBLE]           = { 0x2f, "cmpl-double" },
     [DOP_CMPG_DOUBLE]           = { 0x30, "cmpg-double" },
     [DOP_CMP_LONG]              = { 0x31, "cmp-long" },
-    [DOP_IF_EQ]                 = { 0x32, "if-eq" },
-    [DOP_IF_NE]                 = { 0x33, "if-ne" },
-    [DOP_IF_LT]                 = { 0x34, "if-lt" },
-    [DOP_IF_GE]                 = { 0x35, "if-ge" },
-    [DOP_IF_GT]                 = { 0x36, "if-gt" },
-    [DOP_IF_LE]                 = { 0x37, "if-le" },
+    [DOP_IF_EQ]                 = { 0x32, "if-eq",              dalvik_decomp_instr_if },
+    [DOP_IF_NE]                 = { 0x33, "if-ne",              dalvik_decomp_instr_if },
+    [DOP_IF_LT]                 = { 0x34, "if-lt",              dalvik_decomp_instr_if },
+    [DOP_IF_GE]                 = { 0x35, "if-ge",              dalvik_decomp_instr_if },
+    [DOP_IF_GT]                 = { 0x36, "if-gt",              dalvik_decomp_instr_if },
+    [DOP_IF_LE]                 = { 0x37, "if-le",              dalvik_decomp_instr_if },
     [DOP_IF_EQZ]                = { 0x38, "if-eqz" },
     [DOP_IF_NEZ]                = { 0x39, "if-nez" },
     [DOP_IF_LTZ]                = { 0x3a, "if-ltz" },
diff --git a/src/arch/dalvik/translate.h b/src/arch/dalvik/translate.h
index 350dff8..c708aaf 100644
--- a/src/arch/dalvik/translate.h
+++ b/src/arch/dalvik/translate.h
@@ -60,6 +60,9 @@ GDecInstruction *dalvik_decomp_instr_arithm_2addr(const GArchInstruction *, GDec
 /* Décompile une instruction de type 'opérations arithmétiques'. */
 GDecInstruction *dalvik_decomp_instr_arithm_lit(const GArchInstruction *, GDecContext *);
 
+/* Décompile une instruction de comparaison d'opérandes. */
+GDecInstruction *dalvik_decomp_instr_if(const GArchInstruction *, GDecContext *);
+
 
 
 #endif  /* _ANALYSIS_DECOMP_RTL_DALVIK_TRANSLATE_H */