summaryrefslogtreecommitdiff
path: root/src/arch/arm
diff options
context:
space:
mode:
Diffstat (limited to 'src/arch/arm')
-rw-r--r--src/arch/arm/v7/Makefile.am1
-rw-r--r--src/arch/arm/v7/link.c113
-rw-r--r--src/arch/arm/v7/link.h41
-rw-r--r--src/arch/arm/v7/post.c175
-rw-r--r--src/arch/arm/v7/post.h5
-rw-r--r--src/arch/arm/v7/processor.c7
6 files changed, 186 insertions, 156 deletions
diff --git a/src/arch/arm/v7/Makefile.am b/src/arch/arm/v7/Makefile.am
index 704b3a6..28a899e 100644
--- a/src/arch/arm/v7/Makefile.am
+++ b/src/arch/arm/v7/Makefile.am
@@ -5,6 +5,7 @@ libarcharmv7_la_SOURCES = \
arm.h arm.c \
helpers.h helpers.c \
instruction.h instruction.c \
+ link.h link.c \
post.h post.c \
processor.h processor.c \
pseudo.h pseudo.c \
diff --git a/src/arch/arm/v7/link.c b/src/arch/arm/v7/link.c
new file mode 100644
index 0000000..278b8d0
--- /dev/null
+++ b/src/arch/arm/v7/link.c
@@ -0,0 +1,113 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * post.c - traitements complémentaires à la phase de désassemblage
+ *
+ * Copyright (C) 2014 Cyrille Bagard
+ *
+ * This file is part of Chrysalide.
+ *
+ * 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 "link.h"
+
+
+#include <assert.h>
+
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction ARMv7 à traiter. *
+* context = contexte associé à la phase de désassemblage. *
+* format = acès aux données du binaire d'origine. *
+* *
+* Description : Complète un désassemblage accompli pour une instruction. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void handle_links_with_thumb_instruction_bl(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
+{
+ const mrange_t *range; /* Emplacementt d'instruction */
+ virt_t pc; /* Position dans l'exécution */
+ GArchOperand *op; /* Opérande numérique en place */
+ int32_t offset; /* Décallage encodé en dur */
+
+ range = g_arch_instruction_get_range(instr);
+
+ pc = get_virt_addr(get_mrange_addr(range));
+
+ /**
+ * Qu'on se trouve en mode Thumb ou ARM, l'instruction
+ * ne peut qu'être encodée sur 4 octets.
+ */
+
+ assert(get_mrange_length(range) == 4);
+
+ pc += 4;
+
+ op = g_arch_instruction_get_operand(instr, 0);
+
+ 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);
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction ARMv7 à traiter. *
+* context = contexte associé à la phase de désassemblage. *
+* format = acès aux données du binaire d'origine. *
+* *
+* Description : Complète un désassemblage accompli pour une instruction. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void handle_links_with_thumb_instruction_blx(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
+{
+ const mrange_t *range; /* Emplacementt d'instruction */
+ virt_t pc; /* Position dans l'exécution */
+ GArchOperand *op; /* Opérande numérique en place */
+ int32_t offset; /* Décallage encodé en dur */
+
+ range = g_arch_instruction_get_range(instr);
+
+ pc = get_virt_addr(get_mrange_addr(range));
+
+ /**
+ * Qu'on se trouve en mode Thumb ou ARM, l'instruction
+ * ne peut qu'être encodée sur 4 octets.
+ */
+
+ assert(get_mrange_length(range) == 4);
+
+ pc += 4;
+ pc -= pc % 4;
+
+ op = g_arch_instruction_get_operand(instr, 0);
+
+ 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);
+
+}
diff --git a/src/arch/arm/v7/link.h b/src/arch/arm/v7/link.h
new file mode 100644
index 0000000..79da9f3
--- /dev/null
+++ b/src/arch/arm/v7/link.h
@@ -0,0 +1,41 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * link.h - prototypes pour l'édition des liens durant la phase de désassemblage
+ *
+ * Copyright (C) 2014 Cyrille Bagard
+ *
+ * This file is part of Chrysalide.
+ *
+ * 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/>.
+ */
+
+
+#ifndef _ARCH_ARM_V7_LINK_H
+#define _ARCH_ARM_V7_LINK_H
+
+
+#include "../../instruction.h"
+#include "../../../format/format.h"
+
+
+
+/* Complète un désassemblage accompli pour une instruction. */
+void handle_links_with_thumb_instruction_bl(GArchInstruction *, GProcContext *, GBinFormat *);
+
+/* Complète un désassemblage accompli pour une instruction. */
+void handle_links_with_thumb_instruction_blx(GArchInstruction *, GProcContext *, GBinFormat *);
+
+
+
+#endif /* _ARCH_ARM_V7_LINK_H */
diff --git a/src/arch/arm/v7/post.c b/src/arch/arm/v7/post.c
index 8ba12d8..f85fc91 100644
--- a/src/arch/arm/v7/post.c
+++ b/src/arch/arm/v7/post.c
@@ -24,19 +24,15 @@
#include "post.h"
-
-
-
#include "../../target.h"
-
-
/******************************************************************************
* *
-* Paramètres : instr = instruction ARMv7 à traiter. *
-* format = acès aux données du binaire d'origine. *
+* Paramètres : instr = instruction ARMv7 à traiter. *
+* context = contexte associé à la phase de désassemblage. *
+* format = accès aux données du binaire d'origine. *
* *
* Description : Complète un désassemblage accompli pour une instruction. *
* *
@@ -46,22 +42,11 @@
* *
******************************************************************************/
-void post_process_thumb_instruction_bl(GArchInstruction *instr, GBinFormat *format)
+void post_process_branch_instructions(GArchInstruction *instr, GProcContext *context, GBinFormat *format)
{
-
-
- const mrange_t *range;
-
- virt_t pc;
-
-
-
-
-
- GArchOperand *op;
- vmpa_t val;
- GArchOperand *new;
-
+ GArchOperand *op; /* Opérande numérique en place */
+ uint32_t addr; /* Adresse visée par le saut */
+ GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange;
VMPA_BUFFER(loc);
@@ -69,148 +54,38 @@ void post_process_thumb_instruction_bl(GArchInstruction *instr, GBinFormat *form
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
-
-
-
- range = g_arch_instruction_get_range(instr);
-
- pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */;
- printf(" -- PC = 0x%x\n", (unsigned int)pc);
-
-
op = g_arch_instruction_get_operand(instr, 0);
- g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val);
-
- printf(" -> %llx = %lld ==>> 0x%x\n", val, val, (unsigned int)(pc + val));
-
-
-
- new = g_target_operand_new(MDS_32_BITS, pc + val);
-
- if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
+ if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr))
{
- init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val);
- init_mrange(&trange, &target, 0);
-
- vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
- snprintf(name, sizeof(name), "loc_%s", loc + 2);
-
- routine = g_binary_routine_new();
- g_binary_routine_set_name(routine, strdup(name));
- //routine = try_to_demangle_routine(name);
-
- g_binary_routine_set_range(routine, &trange);
-
- symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0);
- g_binary_symbol_attach_routine(symbol, routine);
- g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
+ new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
+ if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
+ {
+ init_vmpa(&target, VMPA_NO_PHYSICAL, addr);
+ init_mrange(&trange, &target, 0);
+ vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
+ snprintf(name, sizeof(name), "loc_%s", loc + 2);
- g_target_operand_resolve(G_TARGET_OPERAND(new), format);
+ routine = g_binary_routine_new();
+ g_binary_routine_set_name(routine, strdup(name));
+ //routine = try_to_demangle_routine(name);
+ g_binary_routine_set_range(routine, &trange);
- }
-
-
- g_arch_instruction_replace_operand(instr, new, op);
- //g_arch_instruction_attach_extra_operand(result, new);
+ symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0);
+ g_binary_symbol_attach_routine(symbol, routine);
+ g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
-}
-
-
+ g_target_operand_resolve(G_TARGET_OPERAND(new), format);
+ }
-
-/******************************************************************************
-* *
-* Paramètres : instr = instruction ARMv7 à traiter. *
-* format = acès aux données du binaire d'origine. *
-* *
-* Description : Complète un désassemblage accompli pour une instruction. *
-* *
-* Retour : - *
-* *
-* Remarques : - *
-* *
-******************************************************************************/
-
-void post_process_thumb_instruction_blx(GArchInstruction *instr, GBinFormat *format)
-{
-
-
-
-
-
- const mrange_t *range;
-
- virt_t pc;
-
-
-
- GArchOperand *op;
- vmpa_t val;
- GArchOperand *new;
-
- vmpa2t target;
- mrange_t trange;
- VMPA_BUFFER(loc);
- char name[5 + VMPA_MAX_LEN];
- GBinRoutine *routine; /* Nouvelle routine trouvée */
- GBinSymbol *symbol; /* Nouveau symbole construit */
-
-
-
- range = g_arch_instruction_get_range(instr);
-
- pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */;
-
- printf(" -- PC = 0x%x -> 0x%x\n", (unsigned int)pc, (unsigned int)pc - pc % 4);
- pc = pc - pc % 4;
-
- op = g_arch_instruction_get_operand(instr, 0);
-
- g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val);
-
- printf(" -> %llx = %lld ==>> 0x%x\n", val, val, (unsigned int)(pc + val));
-
-
-
- new = g_target_operand_new(MDS_32_BITS, pc + val);
-
- if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
- {
- init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val);
- init_mrange(&trange, &target, 0);
-
- vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
- snprintf(name, sizeof(name), "loc_%s", loc + 2);
-
- routine = g_binary_routine_new();
- g_binary_routine_set_name(routine, strdup(name));
- //routine = try_to_demangle_routine(name);
-
- g_binary_routine_set_range(routine, &trange);
-
- symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0);
- g_binary_symbol_attach_routine(symbol, routine);
- g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
-
-
-
- g_target_operand_resolve(G_TARGET_OPERAND(new), format);
-
+ g_arch_instruction_replace_operand(instr, new, op);
}
- g_arch_instruction_replace_operand(instr, new, op);
- //g_arch_instruction_attach_extra_operand(result, new);
-
-
-
-
}
-
diff --git a/src/arch/arm/v7/post.h b/src/arch/arm/v7/post.h
index d9ad99e..dec51b2 100644
--- a/src/arch/arm/v7/post.h
+++ b/src/arch/arm/v7/post.h
@@ -31,10 +31,7 @@
/* Complète un désassemblage accompli pour une instruction. */
-void post_process_thumb_instruction_bl(GArchInstruction *, GBinFormat *);
-
-/* Complète un désassemblage accompli pour une instruction. */
-void post_process_thumb_instruction_blx(GArchInstruction *, GBinFormat *);
+void post_process_branch_instructions(GArchInstruction *, GProcContext *, GBinFormat *);
diff --git a/src/arch/arm/v7/processor.c b/src/arch/arm/v7/processor.c
index 2b8617b..4ae933b 100644
--- a/src/arch/arm/v7/processor.c
+++ b/src/arch/arm/v7/processor.c
@@ -200,6 +200,7 @@ GArmV7Processor *g_armv7_processor_new(void)
* Remarques : - *
* *
******************************************************************************/
+#include "link.h"
#include "post.h"
static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *proc, GArmContext *ctx, const bin_t *data, vmpa2t *pos, phys_t end)
{
@@ -269,7 +270,8 @@ static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *pr
{
- g_arch_instruction_set_post_prod_function(result, post_process_thumb_instruction_bl);
+ g_arch_instruction_set_hook(result, IPH_LINK, handle_links_with_thumb_instruction_bl);
+ g_arch_instruction_set_hook(result, IPH_POST, post_process_branch_instructions);
@@ -278,7 +280,8 @@ static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *pr
if (strcmp(g_arch_instruction_get_keyword(result, 0), "blx") == 0/* && pc == 0x000085b2*/)
{
- g_arch_instruction_set_post_prod_function(result, post_process_thumb_instruction_blx);
+ g_arch_instruction_set_hook(result, IPH_LINK, handle_links_with_thumb_instruction_blx);
+ g_arch_instruction_set_hook(result, IPH_POST, post_process_branch_instructions);
}
generated by cgit v0.11.2-87-g4458 at 2024-12-29 13:28:20 (GMT)