/* Chrysalide - Outil d'analyse de fichiers binaires
* immediate.c - opérandes représentant des valeurs numériques
*
* Copyright (C) 2009-2013 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 .
*/
#include "immediate.h"
#include
#include
#include
#include
#include
#include "operand-int.h"
#include "../common/extstr.h"
#include "../format/format.h"
/* Définition d'un opérande de valeur numérique (instance) */
struct _GImmOperand
{
GArchOperand parent; /* Instance parente */
MemoryDataSize size; /* Taille de l'opérande */
/**
* Note : dans le cas d'une valeur signée,
* signed_imm contient la valeur lue/donnée, et
* unsigned_imm la valeur humainement lisible (ie. positive).
*/
union
{
uint8_t val8; /* Valeur sur 8 bits */
uint16_t val16; /* Valeur sur 16 bits */
uint32_t val32; /* Valeur sur 32 bits */
uint64_t val64; /* Valeur sur 64 bits */
} unsigned_imm;
union
{
int8_t val8; /* Valeur sur 8 bits */
int16_t val16; /* Valeur sur 16 bits */
int32_t val32; /* Valeur sur 32 bits */
int64_t val64; /* Valeur sur 64 bits */
} signed_imm;
bool zpad; /* Ajoute des 0 à l'impression */
ImmOperandDisplay display; /* Format général d'affichage */
};
/* Définition d'un opérande de valeur numérique (classe) */
struct _GImmOperandClass
{
GArchOperandClass parent; /* Classe parente */
};
/* Initialise la classe des lignes de descriptions initiales. */
static void g_imm_operand_class_init(GImmOperandClass *);
/* Initialise la classe des lignes de descriptions initiales. */
static void g_imm_operand_init(GImmOperand *);
/* Supprime toutes les références externes. */
static void g_imm_operand_dispose(GImmOperand *);
/* Procède à la libération totale de la mémoire. */
static void g_imm_operand_finalize(GImmOperand *);
/* Construit la chaîne de caractères correspondant à l'opérande. */
static size_t g_imm_operand_to_string(const GImmOperand *, AsmSyntax, char [VMPA_MAX_SIZE]);
/* Traduit un opérande en version humainement lisible. */
static void g_imm_operand_print(const GImmOperand *, GBufferLine *, AsmSyntax);
/* Indique le type défini pour un opérande de valeur numérique. */
G_DEFINE_TYPE(GImmOperand, g_imm_operand, G_TYPE_ARCH_OPERAND);
/******************************************************************************
* *
* Paramètres : klass = classe à initialiser. *
* *
* Description : Initialise la classe des lignes de descriptions initiales. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_imm_operand_class_init(GImmOperandClass *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_imm_operand_dispose;
object->finalize = (GObjectFinalizeFunc)g_imm_operand_finalize;
operand->print = (operand_print_fc)g_imm_operand_print;
}
/******************************************************************************
* *
* Paramètres : operand = instance à initialiser. *
* *
* Description : Initialise la classe des lignes de descriptions initiales. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_imm_operand_init(GImmOperand *operand)
{
operand->zpad = false;
operand->display = IOD_HEX;
}
/******************************************************************************
* *
* Paramètres : operand = instance d'objet GLib à traiter. *
* *
* Description : Supprime toutes les références externes. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_imm_operand_dispose(GImmOperand *operand)
{
G_OBJECT_CLASS(g_imm_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_imm_operand_finalize(GImmOperand *operand)
{
G_OBJECT_CLASS(g_imm_operand_parent_class)->finalize(G_OBJECT(operand));
}
/******************************************************************************
* *
* Paramètres : size = taille de l'opérande souhaitée. *
* data = flux de données à analyser. *
* pos = position courante dans ce flux. [OUT] *
* end = limite des données à analyser. *
* low = position éventuelle des 4 bits visés. [OUT] *
* endian = ordre des bits dans la source. *
* *
* Description : Crée un opérande réprésentant une valeur numérique. *
* *
* Retour : Instruction mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
GArchOperand *_g_imm_operand_new_from_data(MemoryDataSize size, const bin_t *data, off_t *pos, off_t end, bool *low, SourceEndian endian)
{
GImmOperand *result; /* Opérande à retourner */
result = g_object_new(G_TYPE_IMM_OPERAND, NULL);
result->size = size;
switch (size)
{
case MDS_4_BITS_UNSIGNED:
if (!read_u4(&result->unsigned_imm.val8, data, pos, end, low, endian))
goto gionfd_error;
break;
case MDS_8_BITS_UNSIGNED:
if (!read_u8(&result->unsigned_imm.val8, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_16_BITS_UNSIGNED:
if (!read_u16(&result->unsigned_imm.val16, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_32_BITS_UNSIGNED:
if (!read_u32(&result->unsigned_imm.val32, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_64_BITS_UNSIGNED:
if (!read_u64(&result->unsigned_imm.val64, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_4_BITS_SIGNED:
if (!read_s4(&result->signed_imm.val8, data, pos, end, low, endian))
goto gionfd_error;
break;
case MDS_8_BITS_SIGNED:
if (!read_s8(&result->signed_imm.val8, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_16_BITS_SIGNED:
if (!read_s16(&result->signed_imm.val16, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_32_BITS_SIGNED:
if (!read_s32(&result->signed_imm.val32, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_64_BITS_SIGNED:
if (!read_s64(&result->signed_imm.val64, data, pos, end, endian))
goto gionfd_error;
break;
case MDS_UNDEFINED:
goto gionfd_error;
break;
}
return G_ARCH_OPERAND(result);
gionfd_error:
g_object_unref(G_OBJECT(result));
return NULL;
}
/******************************************************************************
* *
* Paramètres : size = taille de l'opérande souhaitée. *
* data = flux de données à analyser. *
* addr = position courante dans ce flux. [OUT] *
* end = limite des données à analyser. *
* low = position éventuelle des 4 bits visés. [OUT] *
* endian = ordre des bits dans la source. *
* *
* Description : Crée un opérande réprésentant une valeur numérique. *
* *
* Retour : Instruction mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
GArchOperand *_g_imm_operand_new_from_data2(MemoryDataSize size, const bin_t *data, vmpa2t *addr, off_t end, bool *low, SourceEndian endian)
{
GImmOperand *result; /* Opérande à retourner */
off_t old; /* Ancienne tête de lecture */
off_t pos; /* Position physique */
result = g_object_new(G_TYPE_IMM_OPERAND, NULL);
result->size = size;
pos = get_phy_addr(addr);
old = pos;
switch (size)
{
case MDS_4_BITS_UNSIGNED:
if (!read_u4(&result->unsigned_imm.val8, data, &pos, end, low, endian))
goto gionfd_error;
break;
case MDS_8_BITS_UNSIGNED:
if (!read_u8(&result->unsigned_imm.val8, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_16_BITS_UNSIGNED:
if (!read_u16(&result->unsigned_imm.val16, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_32_BITS_UNSIGNED:
if (!read_u32(&result->unsigned_imm.val32, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_64_BITS_UNSIGNED:
if (!read_u64(&result->unsigned_imm.val64, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_4_BITS_SIGNED:
if (!read_s4(&result->signed_imm.val8, data, &pos, end, low, endian))
goto gionfd_error;
break;
case MDS_8_BITS_SIGNED:
if (!read_s8(&result->signed_imm.val8, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_16_BITS_SIGNED:
if (!read_s16(&result->signed_imm.val16, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_32_BITS_SIGNED:
if (!read_s32(&result->signed_imm.val32, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_64_BITS_SIGNED:
if (!read_s64(&result->signed_imm.val64, data, &pos, end, endian))
goto gionfd_error;
break;
case MDS_UNDEFINED:
goto gionfd_error;
break;
}
advance_vmpa(addr, pos - old);
return G_ARCH_OPERAND(result);
gionfd_error:
g_object_unref(G_OBJECT(result));
return NULL;
}
/******************************************************************************
* *
* Paramètres : size = taille de l'opérande souhaitée. *
* ... = valeur sur x bits à venir récupérer. *
* *
* Description : Crée un opérande réprésentant une valeur numérique. *
* *
* Retour : Instruction mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
GArchOperand *g_imm_operand_new_from_value(MemoryDataSize size, ...)
{
GImmOperand *result; /* Opérande à retourner */
va_list ap; /* Liste des compléments */
uint8_t uval8; /* Valeur sur 8 bits */
uint16_t uval16; /* Valeur sur 16 bits */
uint32_t uval32; /* Valeur sur 32 bits */
uint64_t uval64; /* Valeur sur 64 bits */
int8_t sval8; /* Valeur sur 8 bits */
int16_t sval16; /* Valeur sur 16 bits */
int32_t sval32; /* Valeur sur 32 bits */
int64_t sval64; /* Valeur sur 64 bits */
if (size == MDS_UNDEFINED) return NULL;
result = g_object_new(G_TYPE_IMM_OPERAND, NULL);
result->size = size;
va_start(ap, size);
switch (size)
{
/* Pour GCC... */
case MDS_UNDEFINED:
break;
case MDS_4_BITS_UNSIGNED:
case MDS_8_BITS_UNSIGNED:
uval8 = (uint8_t)va_arg(ap, unsigned int);
result->unsigned_imm.val8 = uval8;
break;
case MDS_16_BITS_UNSIGNED:
uval16 = (uint16_t)va_arg(ap, unsigned int);
result->unsigned_imm.val16 = uval16;
break;
case MDS_32_BITS_UNSIGNED:
uval32 = (uint32_t)va_arg(ap, unsigned int);
result->unsigned_imm.val32 = uval32;
break;
case MDS_64_BITS_UNSIGNED:
uval64 = (uint64_t)va_arg(ap, unsigned int);
result->unsigned_imm.val64 = uval64;
break;
case MDS_4_BITS_SIGNED:
case MDS_8_BITS_SIGNED:
sval8 = (int8_t)va_arg(ap, int);
result->signed_imm.val8 = sval8;
break;
case MDS_16_BITS_SIGNED:
sval16 = (int16_t)va_arg(ap, int);
result->signed_imm.val16 = sval16;
break;
case MDS_32_BITS_SIGNED:
sval32 = (int32_t)va_arg(ap, int);
result->signed_imm.val32 = sval32;
break;
case MDS_64_BITS_SIGNED:
sval64 = (int64_t)va_arg(ap, int);
result->signed_imm.val64 = sval64;
break;
}
va_end(ap);
return G_ARCH_OPERAND(result);
}
/******************************************************************************
* *
* 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_imm_operand_get_size(const GImmOperand *operand)
{
return operand->size;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à définir. *
* state = true si des zéro sont à ajouter, false sinon. *
* *
* Description : Précise si des zéro doivent compléter l'affichage ou non. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
void g_imm_operand_pad(GImmOperand *operand, bool state)
{
operand->zpad = state;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à consulter. *
* *
* Description : Indique le signe d'une valeur immédiate. *
* *
* Retour : true si des zéro sont ajoutés à l'affichage, false sinon. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_does_padding(const GImmOperand *operand)
{
return operand->zpad;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à définir. *
* display = format global d'un affichage de valeur. *
* *
* Description : Définit la grande ligne du format textuel de la valeur. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
void g_imm_operand_set_display(GImmOperand *operand, ImmOperandDisplay display)
{
operand->display = display;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à consulter. *
* *
* Description : Indique la grande ligne du format textuel de la valeur. *
* *
* Retour : Format global d'un affichage de valeur. *
* *
* Remarques : - *
* *
******************************************************************************/
ImmOperandDisplay g_imm_operand_get_display(const GImmOperand *operand)
{
return operand->display;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à consulter. *
* *
* Description : Indique le signe d'une valeur immédiate. *
* *
* Retour : true si la valeur est strictement négative, false sinon. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_is_negative(const GImmOperand *operand)
{
bool result; /* Bilan à renvoyer */
switch (operand->size)
{
case MDS_4_BITS_SIGNED:
result = (operand->signed_imm.val8 & 0x08);
break;
case MDS_8_BITS_SIGNED:
result = (operand->signed_imm.val8 & 0x80);
break;
case MDS_16_BITS_SIGNED:
result = (operand->signed_imm.val16 & 0x8000);
break;
case MDS_32_BITS_SIGNED:
result = (operand->signed_imm.val32 & 0x80000000);
break;
case MDS_64_BITS_SIGNED:
result = (operand->signed_imm.val64 & 0x8000000000000000ll);
break;
default:
result = false;
break;
}
return result;
}
/******************************************************************************
* *
* Paramètres : operand = structure dont le contenu est à consulter. *
* *
* Description : Indique si une valeur immédiate est nulle ou non. *
* *
* Retour : true si la valeur est nulle, false sinon. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_is_null(const GImmOperand *operand)
{
bool result; /* Bilan à renvoyer */
switch (operand->size)
{
case MDS_4_BITS_SIGNED:
result = !(operand->signed_imm.val8 & 0x0f);
break;
case MDS_4_BITS_UNSIGNED:
result = !(operand->unsigned_imm.val8 & 0x0f);
break;
case MDS_8_BITS_SIGNED:
result = !(operand->signed_imm.val8 & 0xff);
break;
case MDS_8_BITS_UNSIGNED:
result = !(operand->unsigned_imm.val8 & 0xff);
break;
case MDS_16_BITS_SIGNED:
result = !(operand->signed_imm.val16 & 0xffff);
break;
case MDS_16_BITS_UNSIGNED:
result = !(operand->unsigned_imm.val16 & 0xffff);
break;
case MDS_32_BITS_SIGNED:
result = !(operand->signed_imm.val32 & 0xffffffff);
break;
case MDS_32_BITS_UNSIGNED:
result = !(operand->unsigned_imm.val32 & 0xffffffff);
break;
case MDS_64_BITS_SIGNED:
result = !(operand->signed_imm.val64 & 0xffffffffffffffffll);
break;
case MDS_64_BITS_UNSIGNED:
result = !(operand->unsigned_imm.val64 & 0xffffffffffffffffll);
break;
default:
result = false;
break;
}
return result;
}
/******************************************************************************
* *
* Paramètres : operand = opérande à transcrire. *
* syntax = type de représentation demandée. *
* value = valeur portée par l'opérande transcrite. [OUT] *
* *
* Description : Construit la chaîne de caractères correspondant à l'opérande.*
* *
* Retour : Nombre de caractères utilisés. *
* *
* Remarques : - *
* *
******************************************************************************/
static size_t g_imm_operand_to_string(const GImmOperand *operand, AsmSyntax syntax, char value[VMPA_MAX_SIZE])
{
size_t result; /* Longueur à retourner */
unsigned int range; /* Catégorie de la taille */
const char *prefix; /* Entrée en matière */
const char *suffix; /* Sortie de matière */
const char *alternate; /* Préfixe de forme alternative*/
const char *zpad; /* Remplissage par des zéros */
const char *lmod; /* Modification de longueur */
const char *conv; /* Opérateur de conversion */
char format[16]; /* Format d'impression final */
static const char *zpad_defs[] = { "", "02", "04", "08", "016" };
static const char *lmod_defs[] = { "hh", "hh", "h", "", __PRI64_PREFIX };
static const char *conv_si_defs[] = { "c", "d", "x", "o" };
static const char *conv_us_defs[] = { "c", "u", "x", "o" };
result = 0; /* Gcc... */
range = MDS_RANGE(operand->size);
/* Encadrement pour les caractères */
if (operand->display == IOD_CHAR)
{
prefix = (syntax == ASX_ATT ? "$'" : "'");
suffix = "'";
}
else
{
prefix = (syntax == ASX_ATT ? "$" : "");
suffix = "";
}
/* Préfix de forme '0x' ou '0' */
if (operand->display == IOD_HEX)
alternate = "0x";
else if (operand->display == IOD_OCT)
alternate = "0";
else
alternate = "";
/* Drapeau de remplissage ? */
if (operand->display == IOD_HEX)
zpad = (operand->zpad ? zpad_defs[range] : "");
else
zpad = "";
/* Modification de la longueur fournie */
lmod = lmod_defs[range];
/* Spécification de la conversion */
if (MDS_IS_SIGNED(operand->size))
conv = conv_si_defs[operand->display];
else
conv = conv_us_defs[operand->display];
snprintf(format, sizeof(format), "%s%s%%%s%s%s%s", prefix, alternate, zpad, lmod, conv, suffix);
switch (operand->size)
{
case MDS_UNDEFINED:
result = snprintf(value, VMPA_MAX_SIZE, "");
break;
case MDS_4_BITS_UNSIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->unsigned_imm.val8);
break;
case MDS_8_BITS_UNSIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->unsigned_imm.val8);
break;
case MDS_16_BITS_UNSIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->unsigned_imm.val16);
break;
case MDS_32_BITS_UNSIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->unsigned_imm.val32);
break;
case MDS_64_BITS_UNSIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->unsigned_imm.val64);
break;
case MDS_4_BITS_SIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->signed_imm.val8);
break;
case MDS_8_BITS_SIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->signed_imm.val8);
break;
case MDS_16_BITS_SIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->signed_imm.val16);
break;
case MDS_32_BITS_SIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->signed_imm.val32);
break;
case MDS_64_BITS_SIGNED:
result = snprintf(value, VMPA_MAX_SIZE, format, operand->signed_imm.val64);
break;
}
return 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_imm_operand_print(const GImmOperand *operand, GBufferLine *line, AsmSyntax syntax)
{
char value[VMPA_MAX_SIZE]; /* Chaîne à imprimer */
size_t len; /* Taille de l'élément inséré */
len = g_imm_operand_to_string(operand, syntax, value);
g_buffer_line_insert_text(line, BLC_MAIN, value, len, RTT_IMMEDIATE);
}
/******************************************************************************
* *
* Paramètres : operand = opérande à traiter. *
* addr = valeur résultante. [OUT] *
* *
* Description : Convertit une valeur immédiate en adresse de type vmpa_t. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_to_vmpa_t(const GImmOperand *operand, vmpa_t *addr)
{
bool result; /* Bilan à renvoyer */
result = true;
switch (operand->size)
{
case MDS_4_BITS_UNSIGNED:
case MDS_8_BITS_UNSIGNED:
*addr = operand->unsigned_imm.val8;
break;
case MDS_16_BITS_UNSIGNED:
*addr = operand->unsigned_imm.val16;
break;
case MDS_32_BITS_UNSIGNED:
*addr = operand->unsigned_imm.val32;
break;
case MDS_64_BITS_UNSIGNED:
*addr = operand->unsigned_imm.val64;
break;
default:
result = false;
break;
}
return result;
}
/******************************************************************************
* *
* Paramètres : operand = opérande à traiter. *
* value = valeur résultante. [OUT] *
* negative = indique si la valeur était négative à l'origine. *
* *
* Description : Convertit une valeur immédiate en valeur de type size_t. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_to_size_t(const GImmOperand *operand, size_t *value, bool *negative)
{
bool result; /* Bilan à renvoyer */
*negative = g_imm_operand_is_negative(operand);
switch (operand->size)
{
case MDS_4_BITS_UNSIGNED:
case MDS_8_BITS_UNSIGNED:
result = (sizeof(size_t) >= 1);
if (result) *value = operand->unsigned_imm.val8;
break;
case MDS_16_BITS_UNSIGNED:
result = (sizeof(size_t) >= 2);
if (result) *value = operand->unsigned_imm.val16;
break;
case MDS_32_BITS_UNSIGNED:
result = (sizeof(size_t) >= 4);
if (result) *value = operand->unsigned_imm.val32;
break;
case MDS_64_BITS_UNSIGNED:
result = (sizeof(size_t) >= 8);
if (result) *value = operand->unsigned_imm.val64;
break;
case MDS_8_BITS_SIGNED:
result = (sizeof(size_t) >= 1);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val8;
break;
case MDS_16_BITS_SIGNED:
result = (sizeof(size_t) >= 2);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val16;
break;
case MDS_32_BITS_SIGNED:
result = (sizeof(size_t) >= 4);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val32;
break;
case MDS_64_BITS_SIGNED:
result = (sizeof(size_t) >= 8);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val64;
break;
default:
result = false;
break;
}
return result;
}
/******************************************************************************
* *
* Paramètres : operand = opérande à traiter. *
* value = valeur résultante. [OUT] *
* negative = indique si la valeur était négative à l'origine. *
* *
* Description : Convertit une valeur immédiate en valeur de type off_t. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool g_imm_operand_to_off_t(const GImmOperand *operand, off_t *value, bool *negative)
{
bool result; /* Bilan à renvoyer */
*negative = g_imm_operand_is_negative(operand);
switch (operand->size)
{
case MDS_4_BITS_UNSIGNED:
case MDS_8_BITS_UNSIGNED:
result = (sizeof(off_t) >= 1);
if (result) *value = operand->unsigned_imm.val8;
break;
case MDS_16_BITS_UNSIGNED:
result = (sizeof(off_t) >= 2);
if (result) *value = operand->unsigned_imm.val16;
break;
case MDS_32_BITS_UNSIGNED:
result = (sizeof(off_t) >= 4);
if (result) *value = operand->unsigned_imm.val32;
break;
case MDS_64_BITS_UNSIGNED:
result = (sizeof(off_t) >= 8);
if (result) *value = operand->unsigned_imm.val64;
break;
case MDS_8_BITS_SIGNED:
result = (sizeof(off_t) >= 1);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val8;
break;
case MDS_16_BITS_SIGNED:
result = (sizeof(off_t) >= 2);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val16;
break;
case MDS_32_BITS_SIGNED:
result = (sizeof(off_t) >= 4);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val32;
break;
case MDS_64_BITS_SIGNED:
result = (sizeof(off_t) >= 8);
if (result) *value = (*negative ? -1 : 1 ) * operand->signed_imm.val64;
break;
default:
result = false;
break;
}
return result;
}