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-rw-r--r--src/arch/x86/registers.c530
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diff --git a/src/arch/x86/registers.c b/src/arch/x86/registers.c
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+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * registers.c - aides auxiliaires relatives aux registres x86
+ *
+ * Copyright (C) 2009 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 "registers.h"
+
+
+#include <malloc.h>
+#include <stdio.h>
+
+
+
+/* Liste des registres 8 bits */
+typedef enum _X868bRegister
+{
+ X86_REG8_AL = 0, /* Registre AL */
+ X86_REG8_CL = 1, /* Registre AL */
+ X86_REG8_DL = 2, /* Registre AL */
+ X86_REG8_BL = 3, /* Registre AL */
+ X86_REG8_AH = 4, /* Registre AH */
+ X86_REG8_CH = 5, /* Registre AH */
+ X86_REG8_DH = 6, /* Registre AH */
+ X86_REG8_BH = 7, /* Registre AH */
+
+ X86_REG8_NONE /* Aucun registre */
+
+} X868bRegister;
+
+/* Liste des registres 16 bits */
+typedef enum _X8616bRegister
+{
+ X86_REG16_AX = 0, /* Registre AX */
+ X86_REG16_CX = 1, /* Registre AX */
+ X86_REG16_DX = 2, /* Registre AX */
+ X86_REG16_BX = 3, /* Registre AX */
+ X86_REG16_SP = 4, /* Registre SP */
+ X86_REG16_BP = 5, /* Registre BP */
+ X86_REG16_SI = 6, /* Registre SI */
+ X86_REG16_DI = 7, /* Registre DI */
+
+ X86_REG16_NONE /* Aucun registre */
+
+} X8616bRegister;
+
+/* Liste des registres 32 bits */
+typedef enum _X8632bRegister
+{
+ X86_REG32_EAX = 0, /* Registre EAX */
+ X86_REG32_ECX = 1, /* Registre EAX */
+ X86_REG32_EDX = 2, /* Registre EAX */
+ X86_REG32_EBX = 3, /* Registre EAX */
+ X86_REG32_ESP = 4, /* Registre ESP */
+ X86_REG32_EBP = 5, /* Registre EBP */
+ X86_REG32_ESI = 6, /* Registre ESI */
+ X86_REG32_EDI = 7, /* Registre EDI */
+
+ X86_REG32_NONE /* Aucun registre */
+
+} X8632bRegister;
+
+
+/* Registre x86 */
+struct _x86_register
+{
+ union
+ {
+ X868bRegister reg8; /* Registre 8 bits */
+ X8616bRegister reg16; /* Registre 16 bits */
+ X8632bRegister reg32; /* Registre 32 bits */
+
+ } reg;
+
+ AsmOperandSize size; /* Taille de ce registre */
+
+};
+
+
+
+/******************************************************************************
+* *
+* Paramètres : size = indique la taille du registre. *
+* value = valeur correspondant au registre. *
+* *
+* Description : Récupère l'indentifiant interne d'un registre. *
+* *
+* Retour : Registre définit ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+x86_register *get_x86_register(AsmOperandSize size, bin_t value)
+{
+ x86_register *result; /* Représentation à renvoyer */
+
+ result = (x86_register *)calloc(1, sizeof(x86_register));
+
+ result->size = size;
+
+ switch (size)
+ {
+ case AOS_8_BITS:
+ switch (value)
+ {
+ case 0 ... 7:
+ result->reg.reg8 = (X868bRegister)value;
+ break;
+ default:
+ goto gxr_error;
+ break;
+ }
+ break;
+
+ case AOS_16_BITS:
+ switch (value)
+ {
+ case 0 ... 7:
+ result->reg.reg16 = (X8616bRegister)value;
+ break;
+ default:
+ goto gxr_error;
+ break;
+ }
+ break;
+
+ case AOS_32_BITS:
+ switch (value)
+ {
+ case 0 ... 7:
+ result->reg.reg32 = (X8632bRegister)value;
+ break;
+ default:
+ goto gxr_error;
+ break;
+ }
+ break;
+
+ default:
+ goto gxr_error;
+ break;
+
+ }
+
+ return result;
+
+ gxr_error:
+
+ free(result);
+
+ return NULL;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre à supprimer. *
+* *
+* Description : Efface de la mémoire l'indentifiant interne d'un registre. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void free_x86_register(x86_register *reg)
+{
+ free(reg);
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre à consulter. *
+* *
+* Description : Indique si le registre correspond à ebp ou similaire. *
+* *
+* Retour : true si la correspondance est avérée, false sinon. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool is_x86_register_base_pointer(const x86_register *reg)
+{
+ bool result; /* Bilan à remonter */
+
+ switch (reg->size)
+ {
+ case AOS_8_BITS_UNSIGNED:
+ case AOS_8_BITS_SIGNED:
+ result = (reg->reg.reg8 == X86_REG8_CH);
+ break;
+ case AOS_16_BITS_UNSIGNED:
+ case AOS_16_BITS_SIGNED:
+ result = (reg->reg.reg16 == X86_REG16_BP);
+ break;
+ case AOS_32_BITS_UNSIGNED:
+ case AOS_32_BITS_SIGNED:
+ result = (reg->reg.reg32 == X86_REG32_EBP);
+ break;
+ /*
+ case AOS_64_BITS_UNSIGNED:
+ case AOS_64_BITS_SIGNED:
+ result = (reg->reg.reg8 == X86_REG8_CH);
+ break;
+ */
+ default:
+ result = false;
+
+ }
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre à consulter. *
+* *
+* Description : Indique si le registre correspond à esp ou similaire. *
+* *
+* Retour : true si la correspondance est avérée, false sinon. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool is_x86_register_stack_pointer(const x86_register *reg)
+{
+ bool result; /* Bilan à remonter */
+
+ switch (reg->size)
+ {
+ case AOS_8_BITS_UNSIGNED:
+ case AOS_8_BITS_SIGNED:
+ result = (reg->reg.reg8 == X86_REG8_AH);
+ break;
+ case AOS_16_BITS_UNSIGNED:
+ case AOS_16_BITS_SIGNED:
+ result = (reg->reg.reg16 == X86_REG16_SP);
+ break;
+ case AOS_32_BITS_UNSIGNED:
+ case AOS_32_BITS_SIGNED:
+ result = (reg->reg.reg32 == X86_REG32_ESP);
+ break;
+ /*
+ case AOS_64_BITS_UNSIGNED:
+ case AOS_64_BITS_SIGNED:
+ result = (reg->reg.reg8 == X86_REG8_CH);
+ break;
+ */
+ default:
+ result = false;
+
+ }
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre à imprimer. *
+* syntax = type de représentation demandée. *
+* *
+* Description : Traduit un registre x86 en texte. *
+* *
+* Retour : Traduction en chaîne à libérer de la mémoire. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+char *x86_register_as_text(const x86_register *reg, AsmSyntax syntax)
+{
+ char *result; /* Chaîne à renvoyer */
+
+ result = (char *)calloc(5, sizeof(char));
+
+ switch (syntax)
+ {
+ case ASX_INTEL:
+ switch (reg->size)
+ {
+ case AOS_8_BITS:
+ switch (reg->reg.reg8)
+ {
+ case X86_REG8_AL:
+ snprintf(result, 5, "al");
+ break;
+ case X86_REG8_CL:
+ snprintf(result, 5, "cl");
+ break;
+ case X86_REG8_DL:
+ snprintf(result, 5, "dl");
+ break;
+ case X86_REG8_BL:
+ snprintf(result, 5, "bl");
+ break;
+ case X86_REG8_AH:
+ snprintf(result, 5, "ah");
+ break;
+ case X86_REG8_CH:
+ snprintf(result, 5, "ch");
+ break;
+ case X86_REG8_DH:
+ snprintf(result, 5, "dh");
+ break;
+ case X86_REG8_BH:
+ snprintf(result, 5, "bh");
+ break;
+ case X86_REG8_NONE:
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ case AOS_16_BITS:
+ switch (reg->reg.reg16)
+ {
+ case X86_REG16_AX:
+ snprintf(result, 5, "ax");
+ break;
+ case X86_REG16_CX:
+ snprintf(result, 5, "cx");
+ break;
+ case X86_REG16_DX:
+ snprintf(result, 5, "dx");
+ break;
+ case X86_REG16_BX:
+ snprintf(result, 5, "bx");
+ break;
+ case X86_REG16_SP:
+ snprintf(result, 5, "sp");
+ break;
+ case X86_REG16_BP:
+ snprintf(result, 5, "bp");
+ break;
+ case X86_REG16_SI:
+ snprintf(result, 5, "si");
+ break;
+ case X86_REG16_DI:
+ snprintf(result, 5, "di");
+ break;
+ case X86_REG16_NONE:
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ case AOS_32_BITS:
+ switch (reg->reg.reg32)
+ {
+ case X86_REG32_EAX:
+ snprintf(result, 5, "eax");
+ break;
+ case X86_REG32_ECX:
+ snprintf(result, 5, "ecx");
+ break;
+ case X86_REG32_EDX:
+ snprintf(result, 5, "edx");
+ break;
+ case X86_REG32_EBX:
+ snprintf(result, 5, "ebx");
+ break;
+ case X86_REG32_ESP:
+ snprintf(result, 5, "esp");
+ break;
+ case X86_REG32_EBP:
+ snprintf(result, 5, "ebp");
+ break;
+ case X86_REG32_ESI:
+ snprintf(result, 5, "esi");
+ break;
+ case X86_REG32_EDI:
+ snprintf(result, 5, "edi");
+ break;
+ case X86_REG32_NONE:
+ printf("null reg\n");
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ default:
+ break;
+
+ }
+ break;
+
+ case ASX_ATT:
+ switch (reg->size)
+ {
+ case AOS_8_BITS:
+ switch (reg->reg.reg8)
+ {
+ case X86_REG8_AL:
+ snprintf(result, 5, "%%al");
+ break;
+ case X86_REG8_CL:
+ snprintf(result, 5, "%%cl");
+ break;
+ case X86_REG8_DL:
+ snprintf(result, 5, "%%dl");
+ break;
+ case X86_REG8_BL:
+ snprintf(result, 5, "%%bl");
+ break;
+ case X86_REG8_AH:
+ snprintf(result, 5, "%%ah");
+ break;
+ case X86_REG8_CH:
+ snprintf(result, 5, "%%ch");
+ break;
+ case X86_REG8_DH:
+ snprintf(result, 5, "%%dh");
+ break;
+ case X86_REG8_BH:
+ snprintf(result, 5, "%%bh");
+ break;
+ case X86_REG8_NONE:
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ case AOS_16_BITS:
+ switch (reg->reg.reg16)
+ {
+ case X86_REG16_AX:
+ snprintf(result, 5, "%%ax");
+ break;
+ case X86_REG16_CX:
+ snprintf(result, 5, "%%cx");
+ break;
+ case X86_REG16_DX:
+ snprintf(result, 5, "%%dx");
+ break;
+ case X86_REG16_BX:
+ snprintf(result, 5, "%%bx");
+ break;
+ case X86_REG16_SP:
+ snprintf(result, 5, "%%sp");
+ break;
+ case X86_REG16_BP:
+ snprintf(result, 5, "%%bp");
+ break;
+ case X86_REG16_SI:
+ snprintf(result, 5, "%%si");
+ break;
+ case X86_REG16_DI:
+ snprintf(result, 5, "%%di");
+ break;
+ case X86_REG16_NONE:
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ case AOS_32_BITS:
+ switch (reg->reg.reg32)
+ {
+ case X86_REG32_EAX:
+ snprintf(result, 5, "%%eax");
+ break;
+ case X86_REG32_ECX:
+ snprintf(result, 5, "%%ecx");
+ break;
+ case X86_REG32_EDX:
+ snprintf(result, 5, "%%edx");
+ break;
+ case X86_REG32_EBX:
+ snprintf(result, 5, "%%ebx");
+ break;
+ case X86_REG32_ESP:
+ snprintf(result, 5, "%%esp");
+ break;
+ case X86_REG32_EBP:
+ snprintf(result, 5, "%%ebp");
+ break;
+ case X86_REG32_ESI:
+ snprintf(result, 5, "%%esi");
+ break;
+ case X86_REG32_EDI:
+ snprintf(result, 5, "%%edi");
+ break;
+ case X86_REG32_NONE:
+ /* Ne devrait jamais arriver */
+ break;
+ }
+ break;
+
+ default:
+ break;
+
+ }
+ break;
+
+ default:
+ break;
+
+ }
+
+ return result;
+
+}
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