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authorCyrille Bagard <nocbos@gmail.com>2014-12-30 08:25:05 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2014-12-30 08:25:05 (GMT)
commit57d7eff57c20e75aaa4ccd34f1d9d733e12bb232 (patch)
treea60199f7323a31e0bf22b8f8747fdf402f2c481d /src/arch/arm
parent19e1a97fafb1b73d0efcd995b31951daf1a5c661 (diff)
Tracked each binary area during the disassembling process and tried to follow the execution flow.
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@445 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'src/arch/arm')
-rw-r--r--src/arch/arm/context.c44
-rw-r--r--src/arch/arm/processor.c28
-rw-r--r--src/arch/arm/v7/link.c7
3 files changed, 79 insertions, 0 deletions
diff --git a/src/arch/arm/context.c b/src/arch/arm/context.c
index c86b190..7f41b92 100644
--- a/src/arch/arm/context.c
+++ b/src/arch/arm/context.c
@@ -60,6 +60,9 @@ static void g_arm_context_dispose(GArmContext *);
/* Procède à la libération totale de la mémoire. */
static void g_arm_context_finalize(GArmContext *);
+/* Ajoute une adresse virtuelle comme point de départ de code. */
+static void g_arm_context_push_drop_point(GArmContext *, virt_t );
+
/* ------------------------- CONTEXTE POUR LA DECOMPILATION ------------------------- */
@@ -124,12 +127,17 @@ G_DEFINE_TYPE(GArmContext, g_arm_context, G_TYPE_PROC_CONTEXT);
static void g_arm_context_class_init(GArmContextClass *klass)
{
GObjectClass *object; /* Autre version de la classe */
+ GProcContextClass *proc; /* Version parente de la classe*/
object = G_OBJECT_CLASS(klass);
object->dispose = (GObjectFinalizeFunc/* ! */)g_arm_context_dispose;
object->finalize = (GObjectFinalizeFunc)g_arm_context_finalize;
+ proc = G_PROC_CONTEXT_CLASS(klass);
+
+ proc->push_point = (push_drop_point_fc)g_arm_context_push_drop_point;
+
}
@@ -212,6 +220,42 @@ GArmContext *g_arm_context_new(void)
}
+/******************************************************************************
+* *
+* Paramètres : ctx = contexte de désassemblage à compléter. *
+* addr = adresse d'un nouveau point de départ à traiter. *
+* *
+* Description : Ajoute une adresse virtuelle comme point de départ de code. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_arm_context_push_drop_point(GArmContext *ctx, virt_t addr)
+{
+
+
+ printf("PUSH !!\n");
+
+
+
+ if (addr & 0x1)
+ {
+ addr -= 0x1;
+
+
+ }
+ else ;
+
+ // ARM / Thumb
+
+ G_PROC_CONTEXT_CLASS(g_arm_context_parent_class)->push_point(G_PROC_CONTEXT(ctx), addr);
+
+}
+
+
/* ---------------------------------------------------------------------------------- */
/* CONTEXTE POUR LA DECOMPILATION */
diff --git a/src/arch/arm/processor.c b/src/arch/arm/processor.c
index 2c676be..cf993c0 100644
--- a/src/arch/arm/processor.c
+++ b/src/arch/arm/processor.c
@@ -24,6 +24,7 @@
#include "processor.h"
+#include "context.h"
#include "processor-int.h"
@@ -40,6 +41,9 @@ static void g_arm_processor_dispose(GArmProcessor *);
/* Procède à la libération totale de la mémoire. */
static void g_arm_processor_finalize(GArmProcessor *);
+/* Fournit un contexte pour l'exécution du processeur ARM. */
+static GArmContext *g_arm_processor_get_context(const GArmProcessor *);
+
/* Indique le type défini par la GLib pour le processeur ARM. */
@@ -84,6 +88,11 @@ static void g_arm_processor_class_init(GArmProcessorClass *klass)
static void g_arm_processor_init(GArmProcessor *proc)
{
+ GArchProcessor *parent; /* Instance parente */
+
+ parent = G_ARCH_PROCESSOR(proc);
+
+ parent->get_ctx = (get_processor_context_fc)g_arm_processor_get_context;
}
@@ -124,3 +133,22 @@ static void g_arm_processor_finalize(GArmProcessor *proc)
G_OBJECT_CLASS(g_arm_processor_parent_class)->finalize(G_OBJECT(proc));
}
+
+
+/******************************************************************************
+* *
+* Paramètres : proc = architecture, spectatrice ici. *
+* *
+* Description : Fournit un contexte pour l'exécution du processeur Arm. *
+* *
+* Retour : Contexte mis en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GArmContext *g_arm_processor_get_context(const GArmProcessor *proc)
+{
+ return g_arm_context_new();
+
+}
diff --git a/src/arch/arm/v7/link.c b/src/arch/arm/v7/link.c
index 278b8d0..e7a1b40 100644
--- a/src/arch/arm/v7/link.c
+++ b/src/arch/arm/v7/link.c
@@ -67,6 +67,9 @@ void handle_links_with_thumb_instruction_bl(GArchInstruction *instr, GProcContex
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_SIGNED, &offset))
g_imm_operand_set_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, pc + offset);
+
+ printf("[@ 0x%08x] Add 0x%08x to %p\n", (uint32_t)get_virt_addr(get_mrange_addr(range)), (uint32_t)(pc + offset), context);
+
}
@@ -110,4 +113,8 @@ void handle_links_with_thumb_instruction_blx(GArchInstruction *instr, GProcConte
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_SIGNED, &offset))
g_imm_operand_set_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, pc + offset);
+
+ printf("[@ 0x%08x] Add 0x%08x to %p\n", (uint32_t)get_virt_addr(get_mrange_addr(range)), (uint32_t)(pc + offset), context);
+
+
}