Created operands for resolving symbols in disassembly code.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@442 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

13 files changed, 752 insertions, 8 deletions

diff --git a/src/arch/Makefile.am b/src/arch/Makefile.am
index 1c63016..33747fb 100644
--- a/src/arch/Makefile.am
+++ b/src/arch/Makefile.am
@@ -16,6 +16,7 @@ libarch_la_SOURCES =					\
 	raw.h raw.c							\
 	register-int.h						\
 	register.h register.c				\
+	target.h target.c					\
 	translate.h							\
 	vmpa.h vmpa.c
 
diff --git a/src/arch/arm/v7/Makefile.am b/src/arch/arm/v7/Makefile.am
index 0bb88aa..704b3a6 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			\
+	post.h post.c						\
 	processor.h processor.c				\
 	pseudo.h pseudo.c					\
 	register.h register.c				\
diff --git a/src/arch/arm/v7/helpers.c b/src/arch/arm/v7/helpers.c
index 8acfeb5..45c6ba5 100644
--- a/src/arch/arm/v7/helpers.c
+++ b/src/arch/arm/v7/helpers.c
@@ -145,7 +145,7 @@ GArchOperand *sign_extend_armv7_imm(uint32_t value, bool topbit, unsigned int si
             mds = MDS_ ## sz ## _BITS_SIGNED;                       \
             val ## sz = value;                                      \
             if (topbit)                                             \
-                for (i = msb + 1; i < sz; i++)                      \
+                for (i = msb; i < sz; i++)                          \
                     val ## sz |= (1 << i);                          \
             result = g_imm_operand_new_from_value(mds, val ## sz);  \
             break;
diff --git a/src/arch/arm/v7/opdefs/bl_A8825.d b/src/arch/arm/v7/opdefs/bl_A8825.d
index c9ef5d0..dc9c922 100644
--- a/src/arch/arm/v7/opdefs/bl_A8825.d
+++ b/src/arch/arm/v7/opdefs/bl_A8825.d
@@ -25,7 +25,7 @@
 
 @encoding(T1) {
 
-    @word 1 1 1 1 0 S(1) imm10H(10) 1 1 J1(1) 1 J2(1) imm10L(10) H(1)
+    @word 1 1 1 1 0 S(1) imm10(10) 1 1 J1(1) 1 J2(1) imm11(11)
 
     @syntax <imm32>
 
@@ -33,7 +33,7 @@
 
         I1 = NOT(J1 EOR S)
         I2 = NOT(J2 EOR S)
-        imm32 = SignExtend(S:I1:I2:imm10H:imm10L:'00', s, 32)
+        imm32 = SignExtend(S:I1:I2:imm10:imm11:'0', S, 32)
 
     }
 
@@ -41,15 +41,15 @@
 
 @encoding(T2) {
 
-    @word 1 1 1 1 0 S(1) imm10(10) 1 1 J1(1) 0 J2(1) imm11(11)
+    @word 1 1 1 1 0 S(1) imm10H(10) 1 1 J1(1) 0 J2(1) imm10L(10) H(1)
 
-    @syntax <imm32>
+    @syntax "blx" <imm32>
 
     @conv {
 
         I1 = NOT(J1 EOR S)
         I2 = NOT(J2 EOR S)
-        imm32 = SignExtend(S:I1:I2:imm10:imm11:'0', S, 32)
+        imm32 = SignExtend(S:I1:I2:imm10H:imm10L:'00', S, 32)
 
     }
 
@@ -73,7 +73,7 @@
 
     @word cond(4) 1 0 1 H(1) imm24(24)
 
-    @syntax <imm32>
+    @syntax "blx" <imm32>
 
     @conv {
 
diff --git a/src/arch/arm/v7/post.c b/src/arch/arm/v7/post.c
new file mode 100644
index 0000000..8ba12d8
--- /dev/null
+++ b/src/arch/arm/v7/post.c
@@ -0,0 +1,216 @@
+
+/* 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 "post.h"
+
+
+
+
+
+#include "../../target.h"
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
+*  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_bl(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\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))
+    {
+        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_attach_extra_operand(result, new);
+
+
+
+}
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
+*  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_attach_extra_operand(result, new);
+
+
+
+
+}
+
diff --git a/src/arch/arm/v7/post.h b/src/arch/arm/v7/post.h
new file mode 100644
index 0000000..d9ad99e
--- /dev/null
+++ b/src/arch/arm/v7/post.h
@@ -0,0 +1,41 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * post.h - prototypes pour les 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/>.
+ */
+
+
+#ifndef _ARCH_ARM_V7_POST_H
+#define _ARCH_ARM_V7_POST_H
+
+
+#include "../../instruction.h"
+#include "../../../format/format.h"
+
+
+
+/* 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 *);
+
+
+
+#endif  /* _ARCH_ARM_V7_POST_H */
diff --git a/src/arch/arm/v7/processor.c b/src/arch/arm/v7/processor.c
index dac9639..2b8617b 100644
--- a/src/arch/arm/v7/processor.c
+++ b/src/arch/arm/v7/processor.c
@@ -200,7 +200,7 @@ GArmV7Processor *g_armv7_processor_new(void)
 *  Remarques   : -                                                            *
 *                                                                             *
 ******************************************************************************/
-
+#include "post.h"
 static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *proc, GArmContext *ctx, const bin_t *data, vmpa2t *pos, phys_t end)
 {
     GArchInstruction *result;               /* Instruction à renvoyer      */
@@ -209,6 +209,9 @@ static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *pr
     uint16_t raw16;                         /* Donnée 16 bits à analyser   */
     uint32_t raw32;                         /* Donnée 32 bits à analyser   */
 
+
+
+
     start = get_phy_addr(pos);
 
     diff = 4;
@@ -258,6 +261,29 @@ static GArchInstruction *g_armv7_processor_disassemble(const GArmV7Processor *pr
         result = g_raw_instruction_new_array(data, MDS_32_BITS, 1, pos, end,
                                              G_ARCH_PROCESSOR(proc)->endianness);
 
+
+
+
+
+    if (strcmp(g_arch_instruction_get_keyword(result, 0), "bl") == 0/* && pc == 0x000085b2*/)
+    {
+
+
+        g_arch_instruction_set_post_prod_function(result, post_process_thumb_instruction_bl);
+
+
+
+    }
+
+    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);
+
+
+    }
+
+
     return result;
 
 }
diff --git a/src/arch/immediate.c b/src/arch/immediate.c
index 574fc3d..f8ef432 100644
--- a/src/arch/immediate.c
+++ b/src/arch/immediate.c
@@ -857,6 +857,7 @@ bool g_imm_operand_to_vmpa_t(const GImmOperand *operand, vmpa_t *addr)
             *addr = operand->unsigned_imm.val64;
             break;
         default:
+            *addr = operand->signed_imm.val32;//////
             result = false;
             break;
     }
diff --git a/src/arch/instruction-int.h b/src/arch/instruction-int.h
index f96753a..aedd468 100644
--- a/src/arch/instruction-int.h
+++ b/src/arch/instruction-int.h
@@ -58,6 +58,8 @@ struct _GArchInstruction
     const char *suffix;                     /* Complément au nom affiché   */
     char *cached_keyword;                   /* Désignation complète        */
 
+    instr_post_prod_fc post_prod;   /* A remplacer par un signal... */
+
     mrange_t range;                         /* Emplacement en mémoire      */
 
     /* ------- %< ----------- */
diff --git a/src/arch/instruction.c b/src/arch/instruction.c
index c8640b4..a96f0e4 100644
--- a/src/arch/instruction.c
+++ b/src/arch/instruction.c
@@ -167,6 +167,51 @@ void g_arch_instruction_append_suffix(GArchInstruction *instr, const char *suffi
 
 /******************************************************************************
 *                                                                             *
+*  Paramètres  : instr = instruction quelconque à modifier.                   *
+*                post  = fonction à appeler sur commande.                     *
+*                                                                             *
+*  Description : Définit une fonction de post-traitement après désassemblage. *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void g_arch_instruction_set_post_prod_function(GArchInstruction *instr, instr_post_prod_fc post)
+{
+    instr->post_prod = post;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : instr = instruction quelconque à traiter.                    *
+*                data  = données éventuelles associées à l'opération.         *
+*                                                                             *
+*  Description : Complète un désassemblage accompli pour une instruction.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void g_arch_instruction_call_post_prod_function(GArchInstruction *instr, void *data)
+{
+    if (instr->post_prod != NULL)
+        instr->post_prod(instr, data);
+
+}
+
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
 *  Paramètres  : instr   = instruction quelconque à modifier.                 *
 *                address = adresse virtuelle et/ou position physique.         *
 *                length  = taille de l'instruction.                           *
@@ -321,7 +366,10 @@ void g_arch_instruction_replace_operand(GArchInstruction *instr, GArchOperand *n
             break;
 
     if (i < instr->operands_count)
+    {
+        g_object_unref(G_OBJECT(instr->operands[i]));
         instr->operands[i] = new;
+    }
 
 }
 
diff --git a/src/arch/instruction.h b/src/arch/instruction.h
index 287e34f..7b9fe66 100644
--- a/src/arch/instruction.h
+++ b/src/arch/instruction.h
@@ -35,6 +35,7 @@
 #include "../decomp/context.h"
 #include "../decomp/instruction.h"
 //#include "../format/executable.h"
+#include "../format/format.h"
 
 
 
@@ -59,6 +60,17 @@ GType g_arch_instruction_get_type(void);
 /* Etend la désignation d'un nom d'instruction. */
 void g_arch_instruction_append_suffix(GArchInstruction *, const char *);
 
+/* Complète un désassemblage accompli pour une instruction. */
+typedef void (* instr_post_prod_fc)(GArchInstruction *, void *);
+
+/* Définit une fonction de post-traitement après désassemblage. */
+void g_arch_instruction_set_post_prod_function(GArchInstruction *, instr_post_prod_fc);
+
+/* Complète un désassemblage accompli pour une instruction. */
+void g_arch_instruction_call_post_prod_function(GArchInstruction *, void *);
+
+
+
 /* Définit la localisation d'une instruction. */
 void g_arch_instruction_set_range(GArchInstruction *, const mrange_t *);
 
diff --git a/src/arch/target.c b/src/arch/target.c
new file mode 100644
index 0000000..93ccbe4
--- /dev/null
+++ b/src/arch/target.c
@@ -0,0 +1,325 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * target.c - opérandes ciblant un symbole
+ *
+ * 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 "target.h"
+
+
+#include <inttypes.h>
+#include <malloc.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+
+#include "operand-int.h"
+#include "../common/extstr.h"
+#include "../format/format.h"
+
+
+
+/* Définition d'un opérande ciblant idéalement un symbole connu (instance) */
+struct _GTargetOperand
+{
+    GArchOperand parent;                    /* Instance parente            */
+
+    MemoryDataSize size;                    /* Taille de l'opérande        */
+    virt_t addr;                            /* Adresse de l'élément visé   */
+
+    GBinSymbol *symbol;                     /* Eventuel symbole associé    */
+    phys_t diff;                            /* Position dans le symbole    */
+
+};
+
+
+/* Définition d'un opérande ciblant idéalement un symbole connu (classe) */
+struct _GTargetOperandClass
+{
+    GArchOperandClass parent;               /* Classe parente              */
+
+};
+
+
+/* Initialise la classe des opérandes ciblant des symboles. */
+static void g_target_operand_class_init(GTargetOperandClass *);
+
+/* Initialise la classe des opérandes ciblant des symboles. */
+static void g_target_operand_init(GTargetOperand *);
+
+/* Supprime toutes les références externes. */
+static void g_target_operand_dispose(GTargetOperand *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_target_operand_finalize(GTargetOperand *);
+
+/* Traduit un opérande en version humainement lisible. */
+static void g_target_operand_print(const GTargetOperand *, GBufferLine *, AsmSyntax);
+
+
+
+/* Indique le type défini pour un opérande de valeur numérique. */
+G_DEFINE_TYPE(GTargetOperand, g_target_operand, G_TYPE_ARCH_OPERAND);
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : klass = classe à initialiser.                                *
+*                                                                             *
+*  Description : Initialise la classe des opérandes ciblant des symboles.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_target_operand_class_init(GTargetOperandClass *klass)
+{
+    GObjectClass *object;                   /* Autre version de la classe  */
+    GArchOperandClass *operand;             /* Version de classe parente   */
+
+    object = G_OBJECT_CLASS(klass);
+    operand = G_ARCH_OPERAND_CLASS(klass);
+
+    object->dispose = (GObjectFinalizeFunc/* ! */)g_target_operand_dispose;
+    object->finalize = (GObjectFinalizeFunc)g_target_operand_finalize;
+
+    operand->print = (operand_print_fc)g_target_operand_print;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = instance à initialiser.                            *
+*                                                                             *
+*  Description : Initialise la classe des opérandes ciblant des symboles.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_target_operand_init(GTargetOperand *operand)
+{
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = instance d'objet GLib à traiter.                   *
+*                                                                             *
+*  Description : Supprime toutes les références externes.                     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_target_operand_dispose(GTargetOperand *operand)
+{
+    if (operand->symbol != NULL)
+        g_object_unref(G_OBJECT(operand->symbol));
+
+    G_OBJECT_CLASS(g_target_operand_parent_class)->dispose(G_OBJECT(operand));
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = instance d'objet GLib à traiter.                   *
+*                                                                             *
+*  Description : Procède à la libération totale de la mémoire.                *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_target_operand_finalize(GTargetOperand *operand)
+{
+    G_OBJECT_CLASS(g_target_operand_parent_class)->finalize(G_OBJECT(operand));
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : size = taille des adresse mémoire virtuelles.                *
+*                addr = adresse virtuelle d'un élément à retrouver.           *
+*                                                                             *
+*  Description : Crée un opérande réprésentant une valeur numérique.          *
+*                                                                             *
+*  Retour      : Instruction mise en place.                                   *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+GArchOperand *g_target_operand_new(MemoryDataSize size, virt_t addr)
+{
+    GTargetOperand *result;                 /* Opérande à retourner        */
+
+    result = g_object_new(G_TYPE_TARGET_OPERAND, NULL);
+
+    result->size = size;
+    result->addr = addr;
+
+    return G_ARCH_OPERAND(result);
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = opérande à traiter.                                *
+*                line    = ligne tampon où imprimer l'opérande donné.         *
+*                syntax  = type de représentation demandée.                   *
+*                                                                             *
+*  Description : Traduit un opérande en version humainement lisible.          *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_target_operand_print(const GTargetOperand *operand, GBufferLine *line, AsmSyntax syntax)
+{
+    const char *label;                      /* Etiquette liée à un symbole */
+    vmpa2t tmp;                             /* Coquille vide pour argument */
+    VMPA_BUFFER(value);                     /* Adresse brute à imprimer    */
+    size_t len;                             /* Taille de l'élément inséré  */
+
+    if (operand->symbol != NULL)
+    {
+        if (operand->diff > 0)
+            g_buffer_line_insert_text(line, BLC_MAIN, "<", 1, RTT_LTGT);
+
+        label = g_binary_symbol_get_label(operand->symbol);
+        g_buffer_line_insert_text(line, BLC_MAIN, label, strlen(label), RTT_LABEL);
+
+        if (operand->diff > 0)
+        {
+            g_buffer_line_insert_text(line, BLC_MAIN, "+", 1, RTT_SIGNS);
+
+            init_vmpa(&tmp, operand->diff, VMPA_NO_VIRTUAL);
+            vmpa2_phys_to_string(&tmp, MDS_4_BITS, value, &len);
+
+            g_buffer_line_insert_text(line, BLC_MAIN, value, len, RTT_LABEL);
+
+            g_buffer_line_insert_text(line, BLC_MAIN, ">", 1, RTT_LTGT);
+
+        }
+
+    }
+    else
+    {
+        init_vmpa(&tmp, VMPA_NO_PHYSICAL, operand->addr);
+        vmpa2_virt_to_string(&tmp, operand->size, value, &len);
+
+        g_buffer_line_insert_text(line, BLC_MAIN, value, len, RTT_LABEL);
+
+    }
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = structure dont le contenu est à consulter.         *
+*                                                                             *
+*  Description : Renseigne la taille de la valeur indiquée à la construction. *
+*                                                                             *
+*  Retour      : Taille de la valeur représentée en mémoire.                  *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+MemoryDataSize g_target_operand_get_size(const GTargetOperand *operand)
+{
+    return operand->size;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = structure dont le contenu est à définir.           *
+*                                                                             *
+*  Description : Fournit l'adresse en mémoire de l'élément visé.              *
+*                                                                             *
+*  Retour      : Adresse en mémoire virtuelle associée.                       *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+virt_t g_target_operand_get_addr(const GTargetOperand *operand)
+{
+    return operand->addr;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : operand = opérande dont le contenu est à raffiner.           *
+*                format  = format du binaire d'origine à consulter.           *
+*                                                                             *
+*  Description : Tente une résolution de symbole.                             *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool g_target_operand_resolve(GTargetOperand *operand, const GBinFormat *format)
+{
+    bool result;                            /* Bilan à retourner           */
+    vmpa2t addr;                            /* Adresse de recherche        */
+
+    if (operand->symbol != NULL)
+        g_object_unref(G_OBJECT(operand->symbol));
+
+    operand->symbol = NULL;
+    operand->diff = 0;
+
+    init_vmpa(&addr, VMPA_NO_PHYSICAL, operand->addr);
+
+    result = g_binary_format_resolve_symbol(format, &addr, &operand->symbol, &operand->diff);
+
+    /**
+     * En cas de succès, le compteur de références du symbole trouvé a été incrémenté.
+     */
+
+    return result;
+
+}
diff --git a/src/arch/target.h b/src/arch/target.h
new file mode 100644
index 0000000..ada1a6c
--- /dev/null
+++ b/src/arch/target.h
@@ -0,0 +1,71 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * target.h - prototypes pour les opérandes ciblant un symbole
+ *
+ * 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_TARGET_H
+#define _ARCH_TARGET_H
+
+
+#include <glib-object.h>
+#include <stdbool.h>
+
+
+#include "archbase.h"
+#include "operand.h"
+#include "vmpa.h"
+#include "../format/format.h"
+
+
+
+#define G_TYPE_TARGET_OPERAND               g_target_operand_get_type()
+#define G_TARGET_OPERAND(obj)               (G_TYPE_CHECK_INSTANCE_CAST((obj), g_target_operand_get_type(), GTargetOperand))
+#define G_IS_TARGET_OPERAND(obj)            (G_TYPE_CHECK_INSTANCE_TYPE((obj), g_target_operand_get_type()))
+#define G_TARGET_OPERAND_CLASS(klass)       (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_TARGET_OPERAND, GTargetOperandClass))
+#define G_IS_TARGET_OPERAND_CLASS(klass)    (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_TARGET_OPERAND))
+#define G_TARGET_OPERAND_GET_CLASS(obj)     (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_TARGET_OPERAND, GTargetOperandClass))
+
+
+/* Définition d'un opérande ciblant idéalement un symbole connu (instance) */
+typedef struct _GTargetOperand GTargetOperand;
+
+/* Définition d'un opérande ciblant idéalement un symbole connu (classe) */
+typedef struct _GTargetOperandClass GTargetOperandClass;
+
+
+/* Indique le type défini pour un opérande d'architecture. */
+GType g_target_operand_get_type(void);
+
+/* Crée un opérande réprésentant une valeur numérique. */
+GArchOperand *g_target_operand_new(MemoryDataSize, virt_t);
+
+/* Renseigne la taille de la valeur indiquée à la construction. */
+MemoryDataSize g_target_operand_get_size(const GTargetOperand *);
+
+/* Fournit l'adresse en mémoire de l'élément visé. */
+virt_t g_target_operand_get_addr(const GTargetOperand *);
+
+/* Tente une résolution de symbole. */
+bool g_target_operand_resolve(GTargetOperand *, const GBinFormat *);
+
+
+
+#endif  /* _ARCH_TARGET_H */