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Diffstat (limited to 'src/arch/x86/operand.c')
-rw-r--r-- | src/arch/x86/operand.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/src/arch/x86/operand.c b/src/arch/x86/operand.c new file mode 100644 index 0000000..84d4038 --- /dev/null +++ b/src/arch/x86/operand.c @@ -0,0 +1,402 @@ +/* OpenIDA - Outil d'analyse de fichiers binaires + * operand.c - gestion des operandes de l'architecture x86 + * + * Copyright (C) 2008 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 "operand.h" + + +#include <malloc.h> +#include <stdio.h> + + +#include "../operand.h" +#include "../operand-int.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 */ + +} 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 */ + +} 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 */ + +} X8632bRegister; + + + + + +/* Définition d'une opérande x86 */ +struct _asm_x86_operand +{ + asm_operand base; /* A laisser en premier */ + + union + { + X868bRegister reg8; /* Registre 8 bits */ + X8616bRegister reg16; /* Registre 16 bits */ + X8632bRegister reg32; /* Registre 32 bits */ + + } x86_value; + +}; + + + +#define NULL ((void *)0) + + + + + +/****************************************************************************** +* * +* Paramètres : - * +* * +* Description : Crée une opérande vierge pour x86. * +* * +* Retour : Opérande nouvellement créée. * +* * +* Remarques : - * +* * +******************************************************************************/ + +asm_x86_operand *create_new_x86_operand(void) +{ + return (asm_x86_operand *)calloc(1, sizeof(asm_x86_operand)); + +} + + + + + + + +/****************************************************************************** +* * +* Paramètres : data = donnée à analyser. * +* is_reg32 = indique si le registre est un registre 32 bits. * +* * +* Description : Crée une opérande renvoyant vers un registre 16 ou 32 bits. * +* * +* Retour : Opérande mise en place ou NULL. * +* * +* Remarques : - * +* * +******************************************************************************/ + +asm_x86_operand *x86_create_reg1632_operand(uint8_t data, bool is_reg32) +{ + asm_x86_operand *result; /* Registre à retourner */ + X8616bRegister reg16; /* Registre 16 bits */ + X8632bRegister reg32; /* Registre 32 bits */ + + if (is_reg32) + switch (data - 0xb8) + { + case 0 ... 7: + reg32 = (X8632bRegister)(data - 0xb8); + break; + default: + return NULL; + break; + } + + else + switch (data - 0xb0) + { + case 0 ... 7: + reg16 = (X8616bRegister)(data - 0xb0); + break; + default: + return NULL; + break; + } + + result = create_new_x86_operand(); + + ASM_OPERAND(result)->type = AOT_REG; + ASM_OPERAND(result)->size = (is_reg32 ? AOS_32_BITS : AOS_16_BITS); + + if (is_reg32) result->x86_value.reg32 = reg32; + else result->x86_value.reg16 = reg16; + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : operand = instruction à traiter. * +* buffer = tampon de sortie mis à disposition. [OUT] * +* len = taille de ce tampon. * +* syntax = type de représentation demandée. * +* * +* Description : Traduit une opérande de registre en texte. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void x86_print_reg_operand(const asm_x86_operand *operand, char *buffer, size_t len, AsmSyntax syntax) +{ + switch (syntax) + { + case ASX_INTEL: + switch (ASM_OPERAND(operand)->size) + { + case AOS_8_BITS: + switch (operand->x86_value.reg8) + { + case X86_REG8_AL: + snprintf(buffer, len, "al"); + break; + case X86_REG8_CL: + snprintf(buffer, len, "cl"); + break; + case X86_REG8_DL: + snprintf(buffer, len, "dl"); + break; + case X86_REG8_BL: + snprintf(buffer, len, "bl"); + break; + case X86_REG8_AH: + snprintf(buffer, len, "ah"); + break; + case X86_REG8_CH: + snprintf(buffer, len, "ch"); + break; + case X86_REG8_DH: + snprintf(buffer, len, "dh"); + break; + case X86_REG8_BH: + snprintf(buffer, len, "bh"); + break; + } + break; + + case AOS_16_BITS: + switch (operand->x86_value.reg16) + { + case X86_REG16_AX: + snprintf(buffer, len, "ax"); + break; + case X86_REG16_CX: + snprintf(buffer, len, "cx"); + break; + case X86_REG16_DX: + snprintf(buffer, len, "dx"); + break; + case X86_REG16_BX: + snprintf(buffer, len, "bx"); + break; + case X86_REG16_SP: + snprintf(buffer, len, "sp"); + break; + case X86_REG16_BP: + snprintf(buffer, len, "bp"); + break; + case X86_REG16_SI: + snprintf(buffer, len, "si"); + break; + case X86_REG16_DI: + snprintf(buffer, len, "di"); + break; + } + break; + + case AOS_32_BITS: + switch (operand->x86_value.reg32) + { + case X86_REG32_EAX: + snprintf(buffer, len, "eax"); + break; + case X86_REG32_ECX: + snprintf(buffer, len, "ecx"); + break; + case X86_REG32_EDX: + snprintf(buffer, len, "edx"); + break; + case X86_REG32_EBX: + snprintf(buffer, len, "ebx"); + break; + case X86_REG32_ESP: + snprintf(buffer, len, "esp"); + break; + case X86_REG32_EBP: + snprintf(buffer, len, "ebp"); + break; + case X86_REG32_ESI: + snprintf(buffer, len, "esi"); + break; + case X86_REG32_EDI: + snprintf(buffer, len, "edi"); + break; + } + break; + + case AOS_64_BITS: + break; + + } + break; + + case ASX_ATT: + switch (ASM_OPERAND(operand)->size) + { + case AOS_8_BITS: + switch (operand->x86_value.reg8) + { + case X86_REG8_AL: + snprintf(buffer, len, "%%al"); + break; + case X86_REG8_CL: + snprintf(buffer, len, "%%cl"); + break; + case X86_REG8_DL: + snprintf(buffer, len, "%%dl"); + break; + case X86_REG8_BL: + snprintf(buffer, len, "%%bl"); + break; + case X86_REG8_AH: + snprintf(buffer, len, "%%ah"); + break; + case X86_REG8_CH: + snprintf(buffer, len, "%%ch"); + break; + case X86_REG8_DH: + snprintf(buffer, len, "%%dh"); + break; + case X86_REG8_BH: + snprintf(buffer, len, "%%bh"); + break; + } + break; + + case AOS_16_BITS: + switch (operand->x86_value.reg16) + { + case X86_REG16_AX: + snprintf(buffer, len, "%%ax"); + break; + case X86_REG16_CX: + snprintf(buffer, len, "%%cx"); + break; + case X86_REG16_DX: + snprintf(buffer, len, "%%dx"); + break; + case X86_REG16_BX: + snprintf(buffer, len, "%%bx"); + break; + case X86_REG16_SP: + snprintf(buffer, len, "%%sp"); + break; + case X86_REG16_BP: + snprintf(buffer, len, "%%bp"); + break; + case X86_REG16_SI: + snprintf(buffer, len, "%%si"); + break; + case X86_REG16_DI: + snprintf(buffer, len, "%%di"); + break; + } + break; + + case AOS_32_BITS: + switch (operand->x86_value.reg32) + { + case X86_REG32_EAX: + snprintf(buffer, len, "%%eax"); + break; + case X86_REG32_ECX: + snprintf(buffer, len, "%%ecx"); + break; + case X86_REG32_EDX: + snprintf(buffer, len, "%%edx"); + break; + case X86_REG32_EBX: + snprintf(buffer, len, "%%ebx"); + break; + case X86_REG32_ESP: + snprintf(buffer, len, "%%esp"); + break; + case X86_REG32_EBP: + snprintf(buffer, len, "%%ebp"); + break; + case X86_REG32_ESI: + snprintf(buffer, len, "%%esi"); + break; + case X86_REG32_EDI: + snprintf(buffer, len, "%%edi"); + break; + } + break; + + case AOS_64_BITS: + break; + + } + break; + + } + +} |