diff options
Diffstat (limited to 'src/arch/x86/op_mov.c')
| -rw-r--r-- | src/arch/x86/op_mov.c | 263 |
1 files changed, 45 insertions, 218 deletions
diff --git a/src/arch/x86/op_mov.c b/src/arch/x86/op_mov.c index 8764526..01e04ff 100644 --- a/src/arch/x86/op_mov.c +++ b/src/arch/x86/op_mov.c @@ -49,34 +49,17 @@ asm_x86_instr *x86_read_instr_mov_al_to_moffs8(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ - asm_x86_operand *value; /* Valeur portée */ - asm_x86_operand *reg; /* Registre de source */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - value = x86_create_moffs8_operand(data, pos, len); - if (value == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_MOFFS8, X86_OTP_AL)) { free(result); return NULL; } - reg = x86_create_r8_operand(0x00, true); - if (reg == NULL) - { - free(value); - free(result); - return NULL; - } - - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(value); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(reg); - return result; } @@ -102,42 +85,19 @@ asm_x86_instr *x86_read_instr_mov_e_ax_to_moffs1632(const uint8_t *data, off_t * { asm_x86_instr *result; /* Instruction à retourner */ AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *value; /* Valeur portée */ - asm_x86_operand *reg; /* Registre de source */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - value = x86_create_moffs1632_operand(data, pos, len, oprsize == AOS_32_BITS); - if (value == NULL) - { - free(result); - return NULL; - } - - reg = x86_create_r1632_operand(0x00, oprsize == AOS_32_BITS, true); - if (reg == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_MOFFS1632, X86_OTP_E_AX, oprsize)) { - free(value); free(result); return NULL; } - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(value); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(reg); - return result; } @@ -162,35 +122,17 @@ asm_x86_instr *x86_read_instr_mov_e_ax_to_moffs1632(const uint8_t *data, off_t * asm_x86_instr *x86_read_instr_mov_imm8_to_rm8(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ - asm_x86_operand *reg; /* Registre de destination */ - asm_x86_operand *value; /* Valeur portée */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg = x86_create_rm8_operand(data, pos, len, true); - if (reg == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_RM8, X86_OTP_IMM8)) { free(result); return NULL; } - value = create_new_x86_operand(); - if (!fill_imm_operand(ASM_OPERAND(value), AOS_8_BITS, data, pos, len)) - { - free(reg); - free(value); - free(result); - return NULL; - } - - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(value); - return result; } @@ -204,7 +146,7 @@ asm_x86_instr *x86_read_instr_mov_imm8_to_rm8(const uint8_t *data, off_t *pos, o * offset = adresse virtuelle de l'instruction. * * proc = architecture ciblée par le désassemblage. * * * -* Description : Décode une instruction de type 'mov al, ...' (8 bits). * +* Description : Décode une instruction de type 'mov' (16 ou 32 bits). * * * * Retour : Instruction mise en place ou NULL. * * * @@ -212,27 +154,44 @@ asm_x86_instr *x86_read_instr_mov_imm8_to_rm8(const uint8_t *data, off_t *pos, o * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_moffs8_to_al(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_imm1632_to_r1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ + AsmOperandSize oprsize; /* Taille des opérandes */ asm_x86_operand *reg; /* Registre de destination */ asm_x86_operand *value; /* Valeur portée */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); - reg = x86_create_r8_operand(0x00, true); + ASM_INSTRUCTION(result)->opcode = data[*pos]; + + + /* + if (!x86_read_one_operand(result, data, pos, len, X86_OTP_OP_R1632, oprsize, 0x40)) + { + free(result); + return NULL; + } + */ + + + + + + reg = x86_create_reg1632_operand(data[(*pos)++], oprsize == AOS_32_BITS, 0xb8); if (reg == NULL) { free(result); return NULL; } - value = x86_create_moffs8_operand(data, pos, len); - if (value == NULL) + value = create_new_x86_operand(); + if (!fill_imm_operand(ASM_OPERAND(value), oprsize, data, pos, len)) { free(reg); + free(value); free(result); return NULL; } @@ -256,7 +215,7 @@ asm_x86_instr *x86_read_instr_mov_moffs8_to_al(const uint8_t *data, off_t *pos, * offset = adresse virtuelle de l'instruction. * * proc = architecture ciblée par le désassemblage. * * * -* Description : Décode une instruction de type 'mov [e]ax, ...' (16/32 bits).* +* Description : Décode une instruction de type 'mov' (16 ou 32 bits). * * * * Retour : Instruction mise en place ou NULL. * * * @@ -264,57 +223,28 @@ asm_x86_instr *x86_read_instr_mov_moffs8_to_al(const uint8_t *data, off_t *pos, * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_moffs1632_to_e_ax(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_imm1632_to_rm1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *reg; /* Registre de destination */ - asm_x86_operand *value; /* Valeur portée */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg = x86_create_r1632_operand(0x00, oprsize == AOS_32_BITS, true); - if (reg == NULL) - { - free(result); - return NULL; - } - - value = x86_create_moffs1632_operand(data, pos, len, oprsize == AOS_32_BITS); - if (value == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_RM1632, X86_OTP_IMM1632, oprsize)) { - free(reg); free(result); return NULL; } - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(value); - return result; } - - - - - - /****************************************************************************** * * * Paramètres : data = flux de données à analyser. * @@ -323,7 +253,7 @@ asm_x86_instr *x86_read_instr_mov_moffs1632_to_e_ax(const uint8_t *data, off_t * * offset = adresse virtuelle de l'instruction. * * proc = architecture ciblée par le désassemblage. * * * -* Description : Décode une instruction de type 'mov' (16 ou 32 bits). * +* Description : Décode une instruction de type 'mov al, ...' (8 bits). * * * * Retour : Instruction mise en place ou NULL. * * * @@ -331,52 +261,20 @@ asm_x86_instr *x86_read_instr_mov_moffs1632_to_e_ax(const uint8_t *data, off_t * * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_with_reg1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_moffs8_to_al(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ - AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *reg2; /* Registre de source */ - asm_x86_operand *reg1; /* Registre de destination */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); - ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg2 = x86_create_reg1632_operand_from_modrm(data[*pos], oprsize == AOS_32_BITS, false); - if (reg2 == NULL) - { - free(result); - return NULL; - } - - if ((data[*pos] & 0xc0) == 0xc0) - { - reg1 = x86_create_reg1632_operand_from_modrm(data[*pos], oprsize == AOS_32_BITS, true); - (*pos)++; - } - else reg1 = x86_create_content1632_operand(data, pos, len, oprsize == AOS_32_BITS, true); - - if (reg1 == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_AL, X86_OTP_MOFFS8)) { free(result); - free(reg2); return NULL; } - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg1); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(reg2); - return result; } @@ -390,7 +288,7 @@ asm_x86_instr *x86_read_instr_mov_with_reg1632(const uint8_t *data, off_t *pos, * offset = adresse virtuelle de l'instruction. * * proc = architecture ciblée par le désassemblage. * * * -* Description : Décode une instruction de type 'mov' (16 ou 32 bits). * +* Description : Décode une instruction de type 'mov [e]ax, ...' (16/32 bits).* * * * Retour : Instruction mise en place ou NULL. * * * @@ -398,47 +296,23 @@ asm_x86_instr *x86_read_instr_mov_with_reg1632(const uint8_t *data, off_t *pos, * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_to_1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_moffs1632_to_e_ax(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *reg; /* Registre de destination */ - asm_x86_operand *value; /* Valeur portée */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); - ASM_INSTRUCTION(result)->opcode = data[*pos]; + ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg = x86_create_reg1632_operand(data[(*pos)++], oprsize == AOS_32_BITS, 0xb8); - if (reg == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_E_AX, X86_OTP_MOFFS1632, oprsize)) { free(result); return NULL; } - value = create_new_x86_operand(); - if (!fill_imm_operand(ASM_OPERAND(value), oprsize, data, pos, len)) - { - free(reg); - free(value); - free(result); - return NULL; - } - - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(value); - return result; } @@ -460,46 +334,23 @@ asm_x86_instr *x86_read_instr_mov_to_1632(const uint8_t *data, off_t *pos, off_t * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_from_content_1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_r1632_to_rm1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *reg1; /* Registre de destination */ - asm_x86_operand *reg2; /* Registre de source */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg1 = x86_create_reg1632_operand_from_modrm(data[*pos], oprsize == AOS_32_BITS, false); - if (reg1 == NULL) - { - free(result); - return NULL; - } - - reg2 = x86_create_content1632_operand(data, pos, len, oprsize == AOS_32_BITS, true); - if (reg2 == NULL) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_RM1632, X86_OTP_R1632, oprsize)) { free(result); - free(reg1); return NULL; } - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg1); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(reg2); - return result; } @@ -521,47 +372,23 @@ asm_x86_instr *x86_read_instr_mov_from_content_1632(const uint8_t *data, off_t * * * ******************************************************************************/ -asm_x86_instr *x86_read_instr_mov_to_content_1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) +asm_x86_instr *x86_read_instr_mov_rm1632_to_r1632(const uint8_t *data, off_t *pos, off_t len, uint64_t offset, const asm_x86_processor *proc) { asm_x86_instr *result; /* Instruction à retourner */ AsmOperandSize oprsize; /* Taille des opérandes */ - asm_x86_operand *reg; /* Registre de destination */ - asm_x86_operand *value; /* Valeur portée */ result = (asm_x86_instr *)calloc(1, sizeof(asm_x86_instr)); - /* Utilisation des registres 32 bits ? */ - if (data[*pos] == 0x66) - { - oprsize = switch_x86_operand_size(proc); - (*pos)++; - } - else oprsize = get_x86_current_operand_size(proc); + oprsize = switch_x86_operand_size_if_needed(proc, data, pos); ASM_INSTRUCTION(result)->opcode = data[(*pos)++]; - reg = x86_create_content1632_operand(data, pos, len, oprsize == AOS_32_BITS, true); - if (reg == NULL) - { - free(result); - return NULL; - } - - value = create_new_x86_operand(); - if (!fill_imm_operand(ASM_OPERAND(value), oprsize, data, pos, len)) + if (!x86_read_two_operands(result, data, pos, len, X86_OTP_R1632, X86_OTP_RM1632, oprsize)) { - free(reg); - free(value); free(result); return NULL; } - ASM_INSTRUCTION(result)->operands = (asm_operand **)calloc(2, sizeof(asm_operand *)); - ASM_INSTRUCTION(result)->operands_count = 2; - - ASM_INSTRUCTION(result)->operands[0] = ASM_OPERAND(reg); - ASM_INSTRUCTION(result)->operands[1] = ASM_OPERAND(value); - return result; } |