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qemu/target/i386/hvf/x86_decode.c
Cameron Esfahani 8c3b0e9e67 hvf: correctly handle REX prefix in relation to legacy prefixes 
In real x86 processors, the REX prefix must come after legacy prefixes.
REX before legacy is ignored.  Update the HVF emulation code to properly
handle this.  Fix some spelling errors in constants.  Fix some decoder
table initialization issues found by Coverity.

Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <eff30ded8307471936bec5d84c3b6efbc95e3211.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-26 09:58:36 +01:00

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/*
* Copyright (C) 2016 Veertu Inc,
* Copyright (C) 2017 Google Inc,
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "panic.h"
#include "x86_decode.h"
#include "vmx.h"
#include "x86_mmu.h"
#include "x86_descr.h"
#define OPCODE_ESCAPE 0xf
static void decode_invalid(CPUX86State *env, struct x86_decode *decode)
{
printf("%llx: failed to decode instruction ", env->hvf_emul->fetch_rip -
decode->len);
for (int i = 0; i < decode->opcode_len; i++) {
printf("%x ", decode->opcode[i]);
}
printf("\n");
VM_PANIC("decoder failed\n");
}
uint64_t sign(uint64_t val, int size)
{
switch (size) {
case 1:
val = (int8_t)val;
break;
case 2:
val = (int16_t)val;
break;
case 4:
val = (int32_t)val;
break;
case 8:
val = (int64_t)val;
break;
default:
VM_PANIC_EX("%s invalid size %d\n", __func__, size);
break;
}
return val;
}
static inline uint64_t decode_bytes(CPUX86State *env, struct x86_decode *decode,
int size)
{
target_ulong val = 0;
switch (size) {
case 1:
case 2:
case 4:
case 8:
break;
default:
VM_PANIC_EX("%s invalid size %d\n", __func__, size);
break;
}
target_ulong va = linear_rip(env_cpu(env), RIP(env)) + decode->len;
vmx_read_mem(env_cpu(env), &val, va, size);
decode->len += size;
return val;
}
static inline uint8_t decode_byte(CPUX86State *env, struct x86_decode *decode)
{
return (uint8_t)decode_bytes(env, decode, 1);
}
static inline uint16_t decode_word(CPUX86State *env, struct x86_decode *decode)
{
return (uint16_t)decode_bytes(env, decode, 2);
}
static inline uint32_t decode_dword(CPUX86State *env, struct x86_decode *decode)
{
return (uint32_t)decode_bytes(env, decode, 4);
}
static inline uint64_t decode_qword(CPUX86State *env, struct x86_decode *decode)
{
return decode_bytes(env, decode, 8);
}
static void decode_modrm_rm(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_RM;
}
static void decode_modrm_reg(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_REG;
op->reg = decode->modrm.reg;
op->ptr = get_reg_ref(env, op->reg, decode->rex.rex, decode->rex.r,
decode->operand_size);
}
static void decode_rax(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_REG;
op->reg = R_EAX;
/* Since reg is always AX, REX prefix has no impact. */
op->ptr = get_reg_ref(env, op->reg, false, 0,
decode->operand_size);
}
static inline void decode_immediate(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *var, int size)
{
var->type = X86_VAR_IMMEDIATE;
var->size = size;
switch (size) {
case 1:
var->val = decode_byte(env, decode);
break;
case 2:
var->val = decode_word(env, decode);
break;
case 4:
var->val = decode_dword(env, decode);
break;
case 8:
var->val = decode_qword(env, decode);
break;
default:
VM_PANIC_EX("bad size %d\n", size);
}
}
static void decode_imm8(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
decode_immediate(env, decode, op, 1);
op->type = X86_VAR_IMMEDIATE;
}
static void decode_imm8_signed(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
decode_immediate(env, decode, op, 1);
op->val = sign(op->val, 1);
op->type = X86_VAR_IMMEDIATE;
}
static void decode_imm16(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
decode_immediate(env, decode, op, 2);
op->type = X86_VAR_IMMEDIATE;
}
static void decode_imm(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
if (8 == decode->operand_size) {
decode_immediate(env, decode, op, 4);
op->val = sign(op->val, decode->operand_size);
} else {
decode_immediate(env, decode, op, decode->operand_size);
}
op->type = X86_VAR_IMMEDIATE;
}
static void decode_imm_signed(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
decode_immediate(env, decode, op, decode->operand_size);
op->val = sign(op->val, decode->operand_size);
op->type = X86_VAR_IMMEDIATE;
}
static void decode_imm_1(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_IMMEDIATE;
op->val = 1;
}
static void decode_imm_0(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_IMMEDIATE;
op->val = 0;
}
static void decode_pushseg(CPUX86State *env, struct x86_decode *decode)
{
uint8_t op = (decode->opcode_len > 1) ? decode->opcode[1] : decode->opcode[0];
decode->op[0].type = X86_VAR_REG;
switch (op) {
case 0xe:
decode->op[0].reg = R_CS;
break;
case 0x16:
decode->op[0].reg = R_SS;
break;
case 0x1e:
decode->op[0].reg = R_DS;
break;
case 0x06:
decode->op[0].reg = R_ES;
break;
case 0xa0:
decode->op[0].reg = R_FS;
break;
case 0xa8:
decode->op[0].reg = R_GS;
break;
}
}
static void decode_popseg(CPUX86State *env, struct x86_decode *decode)
{
uint8_t op = (decode->opcode_len > 1) ? decode->opcode[1] : decode->opcode[0];
decode->op[0].type = X86_VAR_REG;
switch (op) {
case 0xf:
decode->op[0].reg = R_CS;
break;
case 0x17:
decode->op[0].reg = R_SS;
break;
case 0x1f:
decode->op[0].reg = R_DS;
break;
case 0x07:
decode->op[0].reg = R_ES;
break;
case 0xa1:
decode->op[0].reg = R_FS;
break;
case 0xa9:
decode->op[0].reg = R_GS;
break;
}
}
static void decode_incgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0x40;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_decgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0x48;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_incgroup2(CPUX86State *env, struct x86_decode *decode)
{
if (!decode->modrm.reg) {
decode->cmd = X86_DECODE_CMD_INC;
} else if (1 == decode->modrm.reg) {
decode->cmd = X86_DECODE_CMD_DEC;
}
}
static void decode_pushgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0x50;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_popgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0x58;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_jxx(CPUX86State *env, struct x86_decode *decode)
{
decode->displacement = decode_bytes(env, decode, decode->operand_size);
decode->displacement_size = decode->operand_size;
}
static void decode_farjmp(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_IMMEDIATE;
decode->op[0].val = decode_bytes(env, decode, decode->operand_size);
decode->displacement = decode_word(env, decode);
}
static void decode_addgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_ADD,
X86_DECODE_CMD_OR,
X86_DECODE_CMD_ADC,
X86_DECODE_CMD_SBB,
X86_DECODE_CMD_AND,
X86_DECODE_CMD_SUB,
X86_DECODE_CMD_XOR,
X86_DECODE_CMD_CMP
};
decode->cmd = group[decode->modrm.reg];
}
static void decode_rotgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_ROL,
X86_DECODE_CMD_ROR,
X86_DECODE_CMD_RCL,
X86_DECODE_CMD_RCR,
X86_DECODE_CMD_SHL,
X86_DECODE_CMD_SHR,
X86_DECODE_CMD_SHL,
X86_DECODE_CMD_SAR
};
decode->cmd = group[decode->modrm.reg];
}
static void decode_f7group(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_TST,
X86_DECODE_CMD_TST,
X86_DECODE_CMD_NOT,
X86_DECODE_CMD_NEG,
X86_DECODE_CMD_MUL,
X86_DECODE_CMD_IMUL_1,
X86_DECODE_CMD_DIV,
X86_DECODE_CMD_IDIV
};
decode->cmd = group[decode->modrm.reg];
decode_modrm_rm(env, decode, &decode->op[0]);
switch (decode->modrm.reg) {
case 0:
case 1:
decode_imm(env, decode, &decode->op[1]);
break;
case 2:
break;
case 3:
decode->op[1].type = X86_VAR_IMMEDIATE;
decode->op[1].val = 0;
break;
default:
break;
}
}
static void decode_xchgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0x90;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_movgroup(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0xb8;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
decode_immediate(env, decode, &decode->op[1], decode->operand_size);
}
static void fetch_moffs(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_OFFSET;
op->ptr = decode_bytes(env, decode, decode->addressing_size);
}
static void decode_movgroup8(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[0] - 0xb0;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
decode_immediate(env, decode, &decode->op[1], decode->operand_size);
}
static void decode_rcx(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X86_VAR_REG;
op->reg = R_ECX;
op->ptr = get_reg_ref(env, op->reg, decode->rex.rex, decode->rex.b,
decode->operand_size);
}
struct decode_tbl {
uint8_t opcode;
enum x86_decode_cmd cmd;
uint8_t operand_size;
bool is_modrm;
void (*decode_op1)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op1);
void (*decode_op2)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op2);
void (*decode_op3)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op3);
void (*decode_op4)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op4);
void (*decode_postfix)(CPUX86State *env, struct x86_decode *decode);
uint32_t flags_mask;
};
struct decode_x87_tbl {
uint8_t opcode;
uint8_t modrm_reg;
uint8_t modrm_mod;
enum x86_decode_cmd cmd;
uint8_t operand_size;
bool rev;
bool pop;
void (*decode_op1)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op1);
void (*decode_op2)(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op2);
void (*decode_postfix)(CPUX86State *env, struct x86_decode *decode);
uint32_t flags_mask;
};
struct decode_tbl invl_inst = {0x0, 0, 0, false, NULL, NULL, NULL, NULL,
decode_invalid};
struct decode_tbl _decode_tbl1[256];
struct decode_tbl _decode_tbl2[256];
struct decode_x87_tbl _decode_tbl3[256];
static void decode_x87_ins(CPUX86State *env, struct x86_decode *decode)
{
struct decode_x87_tbl *decoder;
decode->is_fpu = true;
int mode = decode->modrm.mod == 3 ? 1 : 0;
int index = ((decode->opcode[0] & 0xf) << 4) | (mode << 3) |
decode->modrm.reg;
decoder = &_decode_tbl3[index];
decode->cmd = decoder->cmd;
if (decoder->operand_size) {
decode->operand_size = decoder->operand_size;
}
decode->flags_mask = decoder->flags_mask;
decode->fpop_stack = decoder->pop;
decode->frev = decoder->rev;
if (decoder->decode_op1) {
decoder->decode_op1(env, decode, &decode->op[0]);
}
if (decoder->decode_op2) {
decoder->decode_op2(env, decode, &decode->op[1]);
}
if (decoder->decode_postfix) {
decoder->decode_postfix(env, decode);
}
VM_PANIC_ON_EX(!decode->cmd, "x87 opcode %x %x (%x %x) not decoded\n",
decode->opcode[0], decode->modrm.modrm, decoder->modrm_reg,
decoder->modrm_mod);
}
static void decode_ffgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_INC,
X86_DECODE_CMD_DEC,
X86_DECODE_CMD_CALL_NEAR_ABS_INDIRECT,
X86_DECODE_CMD_CALL_FAR_ABS_INDIRECT,
X86_DECODE_CMD_JMP_NEAR_ABS_INDIRECT,
X86_DECODE_CMD_JMP_FAR_ABS_INDIRECT,
X86_DECODE_CMD_PUSH,
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_INVL
};
decode->cmd = group[decode->modrm.reg];
if (decode->modrm.reg > 2) {
decode->flags_mask = 0;
}
}
static void decode_sldtgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_SLDT,
X86_DECODE_CMD_STR,
X86_DECODE_CMD_LLDT,
X86_DECODE_CMD_LTR,
X86_DECODE_CMD_VERR,
X86_DECODE_CMD_VERW,
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_INVL
};
decode->cmd = group[decode->modrm.reg];
}
static void decode_lidtgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_SGDT,
X86_DECODE_CMD_SIDT,
X86_DECODE_CMD_LGDT,
X86_DECODE_CMD_LIDT,
X86_DECODE_CMD_SMSW,
X86_DECODE_CMD_LMSW,
X86_DECODE_CMD_LMSW,
X86_DECODE_CMD_INVLPG
};
decode->cmd = group[decode->modrm.reg];
if (0xf9 == decode->modrm.modrm) {
decode->opcode[decode->len++] = decode->modrm.modrm;
decode->cmd = X86_DECODE_CMD_RDTSCP;
}
}
static void decode_btgroup(CPUX86State *env, struct x86_decode *decode)
{
enum x86_decode_cmd group[] = {
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_INVL,
X86_DECODE_CMD_BT,
X86_DECODE_CMD_BTS,
X86_DECODE_CMD_BTR,
X86_DECODE_CMD_BTC
};
decode->cmd = group[decode->modrm.reg];
}
static void decode_x87_general(CPUX86State *env, struct x86_decode *decode)
{
decode->is_fpu = true;
}
static void decode_x87_modrm_floatp(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X87_VAR_FLOATP;
}
static void decode_x87_modrm_intp(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X87_VAR_INTP;
}
static void decode_x87_modrm_bytep(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X87_VAR_BYTEP;
}
static void decode_x87_modrm_st0(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X87_VAR_REG;
op->reg = 0;
}
static void decode_decode_x87_modrm_st0(CPUX86State *env,
struct x86_decode *decode,
struct x86_decode_op *op)
{
op->type = X87_VAR_REG;
op->reg = decode->modrm.modrm & 7;
}
static void decode_aegroup(CPUX86State *env, struct x86_decode *decode)
{
decode->is_fpu = true;
switch (decode->modrm.reg) {
case 0:
decode->cmd = X86_DECODE_CMD_FXSAVE;
decode_x87_modrm_bytep(env, decode, &decode->op[0]);
break;
case 1:
decode_x87_modrm_bytep(env, decode, &decode->op[0]);
decode->cmd = X86_DECODE_CMD_FXRSTOR;
break;
case 5:
if (decode->modrm.modrm == 0xe8) {
decode->cmd = X86_DECODE_CMD_LFENCE;
} else {
VM_PANIC("xrstor");
}
break;
case 6:
VM_PANIC_ON(decode->modrm.modrm != 0xf0);
decode->cmd = X86_DECODE_CMD_MFENCE;
break;
case 7:
if (decode->modrm.modrm == 0xf8) {
decode->cmd = X86_DECODE_CMD_SFENCE;
} else {
decode->cmd = X86_DECODE_CMD_CLFLUSH;
}
break;
default:
VM_PANIC_EX("0xae: reg %d\n", decode->modrm.reg);
break;
}
}
static void decode_bswap(CPUX86State *env, struct x86_decode *decode)
{
decode->op[0].type = X86_VAR_REG;
decode->op[0].reg = decode->opcode[1] - 0xc8;
decode->op[0].ptr = get_reg_ref(env, decode->op[0].reg, decode->rex.rex,
decode->rex.b, decode->operand_size);
}
static void decode_d9_4(CPUX86State *env, struct x86_decode *decode)
{
switch (decode->modrm.modrm) {
case 0xe0:
/* FCHS */
decode->cmd = X86_DECODE_CMD_FCHS;
break;
case 0xe1:
decode->cmd = X86_DECODE_CMD_FABS;
break;
case 0xe4:
VM_PANIC("FTST");
break;
case 0xe5:
/* FXAM */
decode->cmd = X86_DECODE_CMD_FXAM;
break;
default:
VM_PANIC("FLDENV");
break;
}
}
static void decode_db_4(CPUX86State *env, struct x86_decode *decode)
{
switch (decode->modrm.modrm) {
case 0xe0:
VM_PANIC_EX("unhandled FNENI: %x %x\n", decode->opcode[0],
decode->modrm.modrm);
break;
case 0xe1:
VM_PANIC_EX("unhandled FNDISI: %x %x\n", decode->opcode[0],
decode->modrm.modrm);
break;
case 0xe2:
VM_PANIC_EX("unhandled FCLEX: %x %x\n", decode->opcode[0],
decode->modrm.modrm);
break;
case 0xe3:
decode->cmd = X86_DECODE_CMD_FNINIT;
break;
case 0xe4:
decode->cmd = X86_DECODE_CMD_FNSETPM;
break;
default:
VM_PANIC_EX("unhandled fpu opcode: %x %x\n", decode->opcode[0],
decode->modrm.modrm);
break;
}
}
#define RFLAGS_MASK_NONE 0
#define RFLAGS_MASK_OSZAPC (RFLAGS_OF | RFLAGS_SF | RFLAGS_ZF | RFLAGS_AF | \
RFLAGS_PF | RFLAGS_CF)
#define RFLAGS_MASK_LAHF (RFLAGS_SF | RFLAGS_ZF | RFLAGS_AF | RFLAGS_PF | \
RFLAGS_CF)
#define RFLAGS_MASK_CF (RFLAGS_CF)
#define RFLAGS_MASK_IF (RFLAGS_IF)
#define RFLAGS_MASK_TF (RFLAGS_TF)
#define RFLAGS_MASK_DF (RFLAGS_DF)
#define RFLAGS_MASK_ZF (RFLAGS_ZF)
struct decode_tbl _1op_inst[] = {
{0x0, X86_DECODE_CMD_ADD, 1, true, decode_modrm_rm, decode_modrm_reg, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1, X86_DECODE_CMD_ADD, 0, true, decode_modrm_rm, decode_modrm_reg, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2, X86_DECODE_CMD_ADD, 1, true, decode_modrm_reg, decode_modrm_rm, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3, X86_DECODE_CMD_ADD, 0, true, decode_modrm_reg, decode_modrm_rm, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x4, X86_DECODE_CMD_ADD, 1, false, decode_rax, decode_imm8, NULL, NULL,
NULL, RFLAGS_MASK_OSZAPC},
{0x5, X86_DECODE_CMD_ADD, 0, false, decode_rax, decode_imm, NULL, NULL,
NULL, RFLAGS_MASK_OSZAPC},
{0x6, X86_DECODE_CMD_PUSH_SEG, 0, false, false, NULL, NULL, NULL,
decode_pushseg, RFLAGS_MASK_NONE},
{0x7, X86_DECODE_CMD_POP_SEG, 0, false, false, NULL, NULL, NULL,
decode_popseg, RFLAGS_MASK_NONE},
{0x8, X86_DECODE_CMD_OR, 1, true, decode_modrm_rm, decode_modrm_reg, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x9, X86_DECODE_CMD_OR, 0, true, decode_modrm_rm, decode_modrm_reg, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa, X86_DECODE_CMD_OR, 1, true, decode_modrm_reg, decode_modrm_rm, NULL,
NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xb, X86_DECODE_CMD_OR, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xc, X86_DECODE_CMD_OR, 1, false, decode_rax, decode_imm8,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xd, X86_DECODE_CMD_OR, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xe, X86_DECODE_CMD_PUSH_SEG, 0, false, false,
NULL, NULL, NULL, decode_pushseg, RFLAGS_MASK_NONE},
{0xf, X86_DECODE_CMD_POP_SEG, 0, false, false,
NULL, NULL, NULL, decode_popseg, RFLAGS_MASK_NONE},
{0x10, X86_DECODE_CMD_ADC, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x11, X86_DECODE_CMD_ADC, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x12, X86_DECODE_CMD_ADC, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x13, X86_DECODE_CMD_ADC, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x14, X86_DECODE_CMD_ADC, 1, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x15, X86_DECODE_CMD_ADC, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x16, X86_DECODE_CMD_PUSH_SEG, 0, false, false,
NULL, NULL, NULL, decode_pushseg, RFLAGS_MASK_NONE},
{0x17, X86_DECODE_CMD_POP_SEG, 0, false, false,
NULL, NULL, NULL, decode_popseg, RFLAGS_MASK_NONE},
{0x18, X86_DECODE_CMD_SBB, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x19, X86_DECODE_CMD_SBB, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1a, X86_DECODE_CMD_SBB, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1b, X86_DECODE_CMD_SBB, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1c, X86_DECODE_CMD_SBB, 1, false, decode_rax, decode_imm8,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1d, X86_DECODE_CMD_SBB, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x1e, X86_DECODE_CMD_PUSH_SEG, 0, false, false,
NULL, NULL, NULL, decode_pushseg, RFLAGS_MASK_NONE},
{0x1f, X86_DECODE_CMD_POP_SEG, 0, false, false,
NULL, NULL, NULL, decode_popseg, RFLAGS_MASK_NONE},
{0x20, X86_DECODE_CMD_AND, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x21, X86_DECODE_CMD_AND, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x22, X86_DECODE_CMD_AND, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x23, X86_DECODE_CMD_AND, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x24, X86_DECODE_CMD_AND, 1, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x25, X86_DECODE_CMD_AND, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x28, X86_DECODE_CMD_SUB, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x29, X86_DECODE_CMD_SUB, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2a, X86_DECODE_CMD_SUB, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2b, X86_DECODE_CMD_SUB, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2c, X86_DECODE_CMD_SUB, 1, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2d, X86_DECODE_CMD_SUB, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x2f, X86_DECODE_CMD_DAS, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x30, X86_DECODE_CMD_XOR, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x31, X86_DECODE_CMD_XOR, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x32, X86_DECODE_CMD_XOR, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x33, X86_DECODE_CMD_XOR, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x34, X86_DECODE_CMD_XOR, 1, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x35, X86_DECODE_CMD_XOR, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x38, X86_DECODE_CMD_CMP, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x39, X86_DECODE_CMD_CMP, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3a, X86_DECODE_CMD_CMP, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3b, X86_DECODE_CMD_CMP, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3c, X86_DECODE_CMD_CMP, 1, false, decode_rax, decode_imm8,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3d, X86_DECODE_CMD_CMP, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x3f, X86_DECODE_CMD_AAS, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x40, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x41, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x42, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x43, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x44, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x45, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x46, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x47, X86_DECODE_CMD_INC, 0, false,
NULL, NULL, NULL, NULL, decode_incgroup, RFLAGS_MASK_OSZAPC},
{0x48, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x49, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4a, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4b, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4c, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4d, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4e, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x4f, X86_DECODE_CMD_DEC, 0, false,
NULL, NULL, NULL, NULL, decode_decgroup, RFLAGS_MASK_OSZAPC},
{0x50, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x51, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x52, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x53, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x54, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x55, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x56, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x57, X86_DECODE_CMD_PUSH, 0, false,
NULL, NULL, NULL, NULL, decode_pushgroup, RFLAGS_MASK_NONE},
{0x58, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x59, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5a, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5b, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5c, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5d, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5e, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x5f, X86_DECODE_CMD_POP, 0, false,
NULL, NULL, NULL, NULL, decode_popgroup, RFLAGS_MASK_NONE},
{0x60, X86_DECODE_CMD_PUSHA, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x61, X86_DECODE_CMD_POPA, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x68, X86_DECODE_CMD_PUSH, 0, false, decode_imm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x6a, X86_DECODE_CMD_PUSH, 0, false, decode_imm8_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x69, X86_DECODE_CMD_IMUL_3, 0, true, decode_modrm_reg,
decode_modrm_rm, decode_imm, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x6b, X86_DECODE_CMD_IMUL_3, 0, true, decode_modrm_reg, decode_modrm_rm,
decode_imm8_signed, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x6c, X86_DECODE_CMD_INS, 1, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x6d, X86_DECODE_CMD_INS, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x6e, X86_DECODE_CMD_OUTS, 1, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x6f, X86_DECODE_CMD_OUTS, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x70, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x71, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x72, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x73, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x74, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x75, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x76, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x77, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x78, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x79, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7a, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7b, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7c, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7d, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7e, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x7f, X86_DECODE_CMD_JXX, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x80, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm, decode_imm8,
NULL, NULL, decode_addgroup, RFLAGS_MASK_OSZAPC},
{0x81, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_imm,
NULL, NULL, decode_addgroup, RFLAGS_MASK_OSZAPC},
{0x82, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm, decode_imm8,
NULL, NULL, decode_addgroup, RFLAGS_MASK_OSZAPC},
{0x83, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_imm8_signed,
NULL, NULL, decode_addgroup, RFLAGS_MASK_OSZAPC},
{0x84, X86_DECODE_CMD_TST, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x85, X86_DECODE_CMD_TST, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0x86, X86_DECODE_CMD_XCHG, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x87, X86_DECODE_CMD_XCHG, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x88, X86_DECODE_CMD_MOV, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x89, X86_DECODE_CMD_MOV, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8a, X86_DECODE_CMD_MOV, 1, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8b, X86_DECODE_CMD_MOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8c, X86_DECODE_CMD_MOV_FROM_SEG, 0, true, decode_modrm_rm,
decode_modrm_reg, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8d, X86_DECODE_CMD_LEA, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8e, X86_DECODE_CMD_MOV_TO_SEG, 0, true, decode_modrm_reg,
decode_modrm_rm, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x8f, X86_DECODE_CMD_POP, 0, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x90, X86_DECODE_CMD_NOP, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x91, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x92, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x93, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x94, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x95, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x96, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x97, X86_DECODE_CMD_XCHG, 0, false, NULL, decode_rax,
NULL, NULL, decode_xchgroup, RFLAGS_MASK_NONE},
{0x98, X86_DECODE_CMD_CBW, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x99, X86_DECODE_CMD_CWD, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9a, X86_DECODE_CMD_CALL_FAR, 0, false, NULL,
NULL, NULL, NULL, decode_farjmp, RFLAGS_MASK_NONE},
{0x9c, X86_DECODE_CMD_PUSHF, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
/*{0x9d, X86_DECODE_CMD_POPF, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_POPF},*/
{0x9e, X86_DECODE_CMD_SAHF, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9f, X86_DECODE_CMD_LAHF, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_LAHF},
{0xa0, X86_DECODE_CMD_MOV, 1, false, decode_rax, fetch_moffs,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa1, X86_DECODE_CMD_MOV, 0, false, decode_rax, fetch_moffs,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa2, X86_DECODE_CMD_MOV, 1, false, fetch_moffs, decode_rax,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa3, X86_DECODE_CMD_MOV, 0, false, fetch_moffs, decode_rax,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa4, X86_DECODE_CMD_MOVS, 1, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa5, X86_DECODE_CMD_MOVS, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa6, X86_DECODE_CMD_CMPS, 1, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa7, X86_DECODE_CMD_CMPS, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xaa, X86_DECODE_CMD_STOS, 1, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xab, X86_DECODE_CMD_STOS, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xac, X86_DECODE_CMD_LODS, 1, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xad, X86_DECODE_CMD_LODS, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xae, X86_DECODE_CMD_SCAS, 1, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xaf, X86_DECODE_CMD_SCAS, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa8, X86_DECODE_CMD_TST, 1, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa9, X86_DECODE_CMD_TST, 0, false, decode_rax, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xb0, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb1, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb2, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb3, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb4, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb5, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb6, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb7, X86_DECODE_CMD_MOV, 1, false, NULL,
NULL, NULL, NULL, decode_movgroup8, RFLAGS_MASK_NONE},
{0xb8, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xb9, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xba, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xbb, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xbc, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xbd, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xbe, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xbf, X86_DECODE_CMD_MOV, 0, false, NULL,
NULL, NULL, NULL, decode_movgroup, RFLAGS_MASK_NONE},
{0xc0, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm, decode_imm8,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xc1, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_imm8,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xc2, X86_DECODE_RET_NEAR, 0, false, decode_imm16,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc3, X86_DECODE_RET_NEAR, 0, false, NULL,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc4, X86_DECODE_CMD_LES, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc5, X86_DECODE_CMD_LDS, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc6, X86_DECODE_CMD_MOV, 1, true, decode_modrm_rm, decode_imm8,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc7, X86_DECODE_CMD_MOV, 0, true, decode_modrm_rm, decode_imm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc8, X86_DECODE_CMD_ENTER, 0, false, decode_imm16, decode_imm8,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xc9, X86_DECODE_CMD_LEAVE, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xca, X86_DECODE_RET_FAR, 0, false, decode_imm16, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xcb, X86_DECODE_RET_FAR, 0, false, decode_imm_0, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xcd, X86_DECODE_CMD_INT, 0, false, decode_imm8, NULL,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
/*{0xcf, X86_DECODE_CMD_IRET, 0, false, NULL, NULL,
NULL, NULL, NULL, RFLAGS_MASK_IRET},*/
{0xd0, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm, decode_imm_1,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xd1, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_imm_1,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xd2, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm, decode_rcx,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xd3, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_rcx,
NULL, NULL, decode_rotgroup, RFLAGS_MASK_OSZAPC},
{0xd4, X86_DECODE_CMD_AAM, 0, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xd5, X86_DECODE_CMD_AAD, 0, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xd7, X86_DECODE_CMD_XLAT, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xd8, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xd9, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xda, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xdb, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xdc, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xdd, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xde, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xdf, X86_DECODE_CMD_INVL, 0, true, NULL,
NULL, NULL, NULL, decode_x87_ins, RFLAGS_MASK_NONE},
{0xe0, X86_DECODE_CMD_LOOP, 0, false, decode_imm8_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe1, X86_DECODE_CMD_LOOP, 0, false, decode_imm8_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe2, X86_DECODE_CMD_LOOP, 0, false, decode_imm8_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe3, X86_DECODE_CMD_JCXZ, 1, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0xe4, X86_DECODE_CMD_IN, 1, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe5, X86_DECODE_CMD_IN, 0, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe6, X86_DECODE_CMD_OUT, 1, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe7, X86_DECODE_CMD_OUT, 0, false, decode_imm8,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe8, X86_DECODE_CMD_CALL_NEAR, 0, false, decode_imm_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xe9, X86_DECODE_CMD_JMP_NEAR, 0, false, decode_imm_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xea, X86_DECODE_CMD_JMP_FAR, 0, false,
NULL, NULL, NULL, NULL, decode_farjmp, RFLAGS_MASK_NONE},
{0xeb, X86_DECODE_CMD_JMP_NEAR, 1, false, decode_imm8_signed,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xec, X86_DECODE_CMD_IN, 1, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xed, X86_DECODE_CMD_IN, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xee, X86_DECODE_CMD_OUT, 1, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xef, X86_DECODE_CMD_OUT, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xf4, X86_DECODE_CMD_HLT, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xf5, X86_DECODE_CMD_CMC, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_CF},
{0xf6, X86_DECODE_CMD_INVL, 1, true,
NULL, NULL, NULL, NULL, decode_f7group, RFLAGS_MASK_OSZAPC},
{0xf7, X86_DECODE_CMD_INVL, 0, true,
NULL, NULL, NULL, NULL, decode_f7group, RFLAGS_MASK_OSZAPC},
{0xf8, X86_DECODE_CMD_CLC, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_CF},
{0xf9, X86_DECODE_CMD_STC, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_CF},
{0xfa, X86_DECODE_CMD_CLI, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_IF},
{0xfb, X86_DECODE_CMD_STI, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_IF},
{0xfc, X86_DECODE_CMD_CLD, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_DF},
{0xfd, X86_DECODE_CMD_STD, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_DF},
{0xfe, X86_DECODE_CMD_INVL, 1, true, decode_modrm_rm,
NULL, NULL, NULL, decode_incgroup2, RFLAGS_MASK_OSZAPC},
{0xff, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm,
NULL, NULL, NULL, decode_ffgroup, RFLAGS_MASK_OSZAPC},
};
struct decode_tbl _2op_inst[] = {
{0x0, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm,
NULL, NULL, NULL, decode_sldtgroup, RFLAGS_MASK_NONE},
{0x1, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm,
NULL, NULL, NULL, decode_lidtgroup, RFLAGS_MASK_NONE},
{0x6, X86_DECODE_CMD_CLTS, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_TF},
{0x9, X86_DECODE_CMD_WBINVD, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x18, X86_DECODE_CMD_PREFETCH, 0, true,
NULL, NULL, NULL, NULL, decode_x87_general, RFLAGS_MASK_NONE},
{0x1f, X86_DECODE_CMD_NOP, 0, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x20, X86_DECODE_CMD_MOV_FROM_CR, 0, true, decode_modrm_rm,
decode_modrm_reg, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x21, X86_DECODE_CMD_MOV_FROM_DR, 0, true, decode_modrm_rm,
decode_modrm_reg, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x22, X86_DECODE_CMD_MOV_TO_CR, 0, true, decode_modrm_reg,
decode_modrm_rm, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x23, X86_DECODE_CMD_MOV_TO_DR, 0, true, decode_modrm_reg,
decode_modrm_rm, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x30, X86_DECODE_CMD_WRMSR, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x31, X86_DECODE_CMD_RDTSC, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x32, X86_DECODE_CMD_RDMSR, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x40, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x41, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x42, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x43, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x44, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x45, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x46, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x47, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x48, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x49, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4a, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4b, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4c, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4d, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4e, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x4f, X86_DECODE_CMD_CMOV, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x77, X86_DECODE_CMD_EMMS, 0, false,
NULL, NULL, NULL, NULL, decode_x87_general, RFLAGS_MASK_NONE},
{0x82, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x83, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x84, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x85, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x86, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x87, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x88, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x89, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8a, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8b, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8c, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8d, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8e, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x8f, X86_DECODE_CMD_JXX, 0, false,
NULL, NULL, NULL, NULL, decode_jxx, RFLAGS_MASK_NONE},
{0x90, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x91, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x92, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x93, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x94, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x95, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x96, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x97, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x98, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x99, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9a, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9b, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9c, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9d, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9e, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0x9f, X86_DECODE_CMD_SETXX, 1, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb0, X86_DECODE_CMD_CMPXCHG, 1, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb1, X86_DECODE_CMD_CMPXCHG, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb6, X86_DECODE_CMD_MOVZX, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb7, X86_DECODE_CMD_MOVZX, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb8, X86_DECODE_CMD_POPCNT, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xbe, X86_DECODE_CMD_MOVSX, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xbf, X86_DECODE_CMD_MOVSX, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa0, X86_DECODE_CMD_PUSH_SEG, 0, false, false,
NULL, NULL, NULL, decode_pushseg, RFLAGS_MASK_NONE},
{0xa1, X86_DECODE_CMD_POP_SEG, 0, false, false,
NULL, NULL, NULL, decode_popseg, RFLAGS_MASK_NONE},
{0xa2, X86_DECODE_CMD_CPUID, 0, false,
NULL, NULL, NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xa3, X86_DECODE_CMD_BT, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_CF},
{0xa4, X86_DECODE_CMD_SHLD, 0, true, decode_modrm_rm, decode_modrm_reg,
decode_imm8, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa5, X86_DECODE_CMD_SHLD, 0, true, decode_modrm_rm, decode_modrm_reg,
decode_rcx, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xa8, X86_DECODE_CMD_PUSH_SEG, 0, false, false,
NULL, NULL, NULL, decode_pushseg, RFLAGS_MASK_NONE},
{0xa9, X86_DECODE_CMD_POP_SEG, 0, false, false,
NULL, NULL, NULL, decode_popseg, RFLAGS_MASK_NONE},
{0xab, X86_DECODE_CMD_BTS, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_CF},
{0xac, X86_DECODE_CMD_SHRD, 0, true, decode_modrm_rm, decode_modrm_reg,
decode_imm8, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xad, X86_DECODE_CMD_SHRD, 0, true, decode_modrm_rm, decode_modrm_reg,
decode_rcx, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xae, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm,
NULL, NULL, NULL, decode_aegroup, RFLAGS_MASK_NONE},
{0xaf, X86_DECODE_CMD_IMUL_2, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xb2, X86_DECODE_CMD_LSS, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_NONE},
{0xb3, X86_DECODE_CMD_BTR, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xba, X86_DECODE_CMD_INVL, 0, true, decode_modrm_rm, decode_imm8,
NULL, NULL, decode_btgroup, RFLAGS_MASK_OSZAPC},
{0xbb, X86_DECODE_CMD_BTC, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xbc, X86_DECODE_CMD_BSF, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xbd, X86_DECODE_CMD_BSR, 0, true, decode_modrm_reg, decode_modrm_rm,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xc1, X86_DECODE_CMD_XADD, 0, true, decode_modrm_rm, decode_modrm_reg,
NULL, NULL, NULL, RFLAGS_MASK_OSZAPC},
{0xc7, X86_DECODE_CMD_CMPXCHG8B, 0, true, decode_modrm_rm,
NULL, NULL, NULL, NULL, RFLAGS_MASK_ZF},
{0xc8, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xc9, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xca, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xcb, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xcc, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xcd, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xce, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
{0xcf, X86_DECODE_CMD_BSWAP, 0, false,
NULL, NULL, NULL, NULL, decode_bswap, RFLAGS_MASK_NONE},
};
struct decode_x87_tbl invl_inst_x87 = {0x0, 0, 0, 0, 0, false, false, NULL,
NULL, decode_invalid, 0};
struct decode_x87_tbl _x87_inst[] = {
{0xd8, 0, 3, X86_DECODE_CMD_FADD, 10, false, false,
decode_x87_modrm_st0, decode_decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 0, 0, X86_DECODE_CMD_FADD, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd8, 1, 3, X86_DECODE_CMD_FMUL, 10, false, false, decode_x87_modrm_st0,
decode_decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 1, 0, X86_DECODE_CMD_FMUL, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd8, 4, 3, X86_DECODE_CMD_FSUB, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 4, 0, X86_DECODE_CMD_FSUB, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd8, 5, 3, X86_DECODE_CMD_FSUB, 10, true, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 5, 0, X86_DECODE_CMD_FSUB, 4, true, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd8, 6, 3, X86_DECODE_CMD_FDIV, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 6, 0, X86_DECODE_CMD_FDIV, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd8, 7, 3, X86_DECODE_CMD_FDIV, 10, true, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd8, 7, 0, X86_DECODE_CMD_FDIV, 4, true, false, decode_x87_modrm_st0,
decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xd9, 0, 3, X86_DECODE_CMD_FLD, 10, false, false,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 0, 0, X86_DECODE_CMD_FLD, 4, false, false,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 1, 3, X86_DECODE_CMD_FXCH, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xd9, 1, 0, X86_DECODE_CMD_INVL, 10, false, false,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 2, 3, X86_DECODE_CMD_INVL, 10, false, false,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 2, 0, X86_DECODE_CMD_FST, 4, false, false,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 3, 3, X86_DECODE_CMD_INVL, 10, false, false,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 3, 0, X86_DECODE_CMD_FST, 4, false, true,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 4, 3, X86_DECODE_CMD_INVL, 10, false, false,
decode_x87_modrm_st0, NULL, decode_d9_4, RFLAGS_MASK_NONE},
{0xd9, 4, 0, X86_DECODE_CMD_INVL, 4, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 5, 3, X86_DECODE_CMD_FLDxx, 10, false, false, NULL, NULL, NULL,
RFLAGS_MASK_NONE},
{0xd9, 5, 0, X86_DECODE_CMD_FLDCW, 2, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 7, 3, X86_DECODE_CMD_FNSTCW, 2, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xd9, 7, 0, X86_DECODE_CMD_FNSTCW, 2, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xda, 0, 3, X86_DECODE_CMD_FCMOV, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xda, 0, 0, X86_DECODE_CMD_FADD, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xda, 1, 3, X86_DECODE_CMD_FCMOV, 10, false, false, decode_x87_modrm_st0,
decode_decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xda, 1, 0, X86_DECODE_CMD_FMUL, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xda, 2, 3, X86_DECODE_CMD_FCMOV, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xda, 3, 3, X86_DECODE_CMD_FCMOV, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xda, 4, 3, X86_DECODE_CMD_INVL, 10, false, false, NULL, NULL, NULL,
RFLAGS_MASK_NONE},
{0xda, 4, 0, X86_DECODE_CMD_FSUB, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xda, 5, 3, X86_DECODE_CMD_FUCOM, 10, false, true, decode_x87_modrm_st0,
decode_decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xda, 5, 0, X86_DECODE_CMD_FSUB, 4, true, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xda, 6, 3, X86_DECODE_CMD_INVL, 10, false, false, NULL, NULL, NULL,
RFLAGS_MASK_NONE},
{0xda, 6, 0, X86_DECODE_CMD_FDIV, 4, false, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xda, 7, 3, X86_DECODE_CMD_INVL, 10, false, false, NULL, NULL, NULL,
RFLAGS_MASK_NONE},
{0xda, 7, 0, X86_DECODE_CMD_FDIV, 4, true, false, decode_x87_modrm_st0,
decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xdb, 0, 3, X86_DECODE_CMD_FCMOV, 10, false, false, decode_x87_modrm_st0,
decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdb, 0, 0, X86_DECODE_CMD_FLD, 4, false, false,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdb, 1, 3, X86_DECODE_CMD_FCMOV, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdb, 2, 3, X86_DECODE_CMD_FCMOV, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdb, 2, 0, X86_DECODE_CMD_FST, 4, false, false,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdb, 3, 3, X86_DECODE_CMD_FCMOV, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdb, 3, 0, X86_DECODE_CMD_FST, 4, false, true,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdb, 4, 3, X86_DECODE_CMD_INVL, 10, false, false, NULL, NULL,
decode_db_4, RFLAGS_MASK_NONE},
{0xdb, 4, 0, X86_DECODE_CMD_INVL, 10, false, false, NULL, NULL, NULL,
RFLAGS_MASK_NONE},
{0xdb, 5, 3, X86_DECODE_CMD_FUCOMI, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdb, 5, 0, X86_DECODE_CMD_FLD, 10, false, false,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdb, 7, 0, X86_DECODE_CMD_FST, 10, false, true,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdc, 0, 3, X86_DECODE_CMD_FADD, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 0, 0, X86_DECODE_CMD_FADD, 8, false, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdc, 1, 3, X86_DECODE_CMD_FMUL, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 1, 0, X86_DECODE_CMD_FMUL, 8, false, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdc, 4, 3, X86_DECODE_CMD_FSUB, 10, true, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 4, 0, X86_DECODE_CMD_FSUB, 8, false, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdc, 5, 3, X86_DECODE_CMD_FSUB, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 5, 0, X86_DECODE_CMD_FSUB, 8, true, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdc, 6, 3, X86_DECODE_CMD_FDIV, 10, true, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 6, 0, X86_DECODE_CMD_FDIV, 8, false, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdc, 7, 3, X86_DECODE_CMD_FDIV, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdc, 7, 0, X86_DECODE_CMD_FDIV, 8, true, false,
decode_x87_modrm_st0, decode_x87_modrm_floatp, NULL, RFLAGS_MASK_NONE},
{0xdd, 0, 0, X86_DECODE_CMD_FLD, 8, false, false,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 1, 3, X86_DECODE_CMD_FXCH, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdd, 2, 3, X86_DECODE_CMD_FST, 10, false, false,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 2, 0, X86_DECODE_CMD_FST, 8, false, false,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 3, 3, X86_DECODE_CMD_FST, 10, false, true,
decode_x87_modrm_st0, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 3, 0, X86_DECODE_CMD_FST, 8, false, true,
decode_x87_modrm_floatp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 4, 3, X86_DECODE_CMD_FUCOM, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdd, 4, 0, X86_DECODE_CMD_FRSTOR, 8, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 5, 3, X86_DECODE_CMD_FUCOM, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdd, 7, 0, X86_DECODE_CMD_FNSTSW, 0, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xdd, 7, 3, X86_DECODE_CMD_FNSTSW, 0, false, false,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xde, 0, 3, X86_DECODE_CMD_FADD, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 0, 0, X86_DECODE_CMD_FADD, 2, false, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xde, 1, 3, X86_DECODE_CMD_FMUL, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 1, 0, X86_DECODE_CMD_FMUL, 2, false, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xde, 4, 3, X86_DECODE_CMD_FSUB, 10, true, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 4, 0, X86_DECODE_CMD_FSUB, 2, false, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xde, 5, 3, X86_DECODE_CMD_FSUB, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 5, 0, X86_DECODE_CMD_FSUB, 2, true, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xde, 6, 3, X86_DECODE_CMD_FDIV, 10, true, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 6, 0, X86_DECODE_CMD_FDIV, 2, false, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xde, 7, 3, X86_DECODE_CMD_FDIV, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xde, 7, 0, X86_DECODE_CMD_FDIV, 2, true, false,
decode_x87_modrm_st0, decode_x87_modrm_intp, NULL, RFLAGS_MASK_NONE},
{0xdf, 0, 0, X86_DECODE_CMD_FLD, 2, false, false,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdf, 1, 3, X86_DECODE_CMD_FXCH, 10, false, false,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdf, 2, 3, X86_DECODE_CMD_FST, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdf, 2, 0, X86_DECODE_CMD_FST, 2, false, false,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdf, 3, 3, X86_DECODE_CMD_FST, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdf, 3, 0, X86_DECODE_CMD_FST, 2, false, true,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdf, 4, 3, X86_DECODE_CMD_FNSTSW, 2, false, true,
decode_x87_modrm_bytep, NULL, NULL, RFLAGS_MASK_NONE},
{0xdf, 5, 3, X86_DECODE_CMD_FUCOMI, 10, false, true,
decode_x87_modrm_st0, decode_x87_modrm_st0, NULL, RFLAGS_MASK_NONE},
{0xdf, 5, 0, X86_DECODE_CMD_FLD, 8, false, false,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
{0xdf, 7, 0, X86_DECODE_CMD_FST, 8, false, true,
decode_x87_modrm_intp, NULL, NULL, RFLAGS_MASK_NONE},
};
void calc_modrm_operand16(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
target_ulong ptr = 0;
X86Seg seg = R_DS;
if (!decode->modrm.mod && 6 == decode->modrm.rm) {
ptr = decode->displacement;
goto calc_addr;
}
if (decode->displacement_size) {
ptr = sign(decode->displacement, decode->displacement_size);
}
switch (decode->modrm.rm) {
case 0:
ptr += BX(env) + SI(env);
break;
case 1:
ptr += BX(env) + DI(env);
break;
case 2:
ptr += BP(env) + SI(env);
seg = R_SS;
break;
case 3:
ptr += BP(env) + DI(env);
seg = R_SS;
break;
case 4:
ptr += SI(env);
break;
case 5:
ptr += DI(env);
break;
case 6:
ptr += BP(env);
seg = R_SS;
break;
case 7:
ptr += BX(env);
break;
}
calc_addr:
if (X86_DECODE_CMD_LEA == decode->cmd) {
op->ptr = (uint16_t)ptr;
} else {
op->ptr = decode_linear_addr(env, decode, (uint16_t)ptr, seg);
}
}
target_ulong get_reg_ref(CPUX86State *env, int reg, int rex_present,
int is_extended, int size)
{
target_ulong ptr = 0;
if (is_extended) {
reg |= R_R8;
}
switch (size) {
case 1:
if (is_extended || reg < 4 || rex_present) {
ptr = (target_ulong)&RL(env, reg);
} else {
ptr = (target_ulong)&RH(env, reg - 4);
}
break;
default:
ptr = (target_ulong)&RRX(env, reg);
break;
}
return ptr;
}
target_ulong get_reg_val(CPUX86State *env, int reg, int rex_present,
int is_extended, int size)
{
target_ulong val = 0;
memcpy(&val,
(void *)get_reg_ref(env, reg, rex_present, is_extended, size),
size);
return val;
}
static target_ulong get_sib_val(CPUX86State *env, struct x86_decode *decode,
X86Seg *sel)
{
target_ulong base = 0;
target_ulong scaled_index = 0;
int addr_size = decode->addressing_size;
int base_reg = decode->sib.base;
int index_reg = decode->sib.index;
*sel = R_DS;
if (decode->modrm.mod || base_reg != R_EBP) {
if (decode->rex.b) {
base_reg |= R_R8;
}
if (base_reg == R_ESP || base_reg == R_EBP) {
*sel = R_SS;
}
base = get_reg_val(env, decode->sib.base, decode->rex.rex,
decode->rex.b, addr_size);
}
if (decode->rex.x) {
index_reg |= R_R8;
}
if (index_reg != R_ESP) {
scaled_index = get_reg_val(env, index_reg, decode->rex.rex,
decode->rex.x, addr_size) <<
decode->sib.scale;
}
return base + scaled_index;
}
void calc_modrm_operand32(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
X86Seg seg = R_DS;
target_ulong ptr = 0;
int addr_size = decode->addressing_size;
if (decode->displacement_size) {
ptr = sign(decode->displacement, decode->displacement_size);
}
if (4 == decode->modrm.rm) {
ptr += get_sib_val(env, decode, &seg);
} else if (!decode->modrm.mod && 5 == decode->modrm.rm) {
if (x86_is_long_mode(env_cpu(env))) {
ptr += RIP(env) + decode->len;
} else {
ptr = decode->displacement;
}
} else {
if (decode->modrm.rm == R_EBP || decode->modrm.rm == R_ESP) {
seg = R_SS;
}
ptr += get_reg_val(env, decode->modrm.rm, decode->rex.rex,
decode->rex.b, addr_size);
}
if (X86_DECODE_CMD_LEA == decode->cmd) {
op->ptr = (uint32_t)ptr;
} else {
op->ptr = decode_linear_addr(env, decode, (uint32_t)ptr, seg);
}
}
void calc_modrm_operand64(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
X86Seg seg = R_DS;
int32_t offset = 0;
int mod = decode->modrm.mod;
int rm = decode->modrm.rm;
target_ulong ptr;
int src = decode->modrm.rm;
if (decode->displacement_size) {
offset = sign(decode->displacement, decode->displacement_size);
}
if (4 == rm) {
ptr = get_sib_val(env, decode, &seg) + offset;
} else if (0 == mod && 5 == rm) {
ptr = RIP(env) + decode->len + (int32_t) offset;
} else {
ptr = get_reg_val(env, src, decode->rex.rex, decode->rex.b, 8) +
(int64_t) offset;
}
if (X86_DECODE_CMD_LEA == decode->cmd) {
op->ptr = ptr;
} else {
op->ptr = decode_linear_addr(env, decode, ptr, seg);
}
}
void calc_modrm_operand(CPUX86State *env, struct x86_decode *decode,
struct x86_decode_op *op)
{
if (3 == decode->modrm.mod) {
op->reg = decode->modrm.reg;
op->type = X86_VAR_REG;
op->ptr = get_reg_ref(env, decode->modrm.rm, decode->rex.rex,
decode->rex.b, decode->operand_size);
return;
}
switch (decode->addressing_size) {
case 2:
calc_modrm_operand16(env, decode, op);
break;
case 4:
calc_modrm_operand32(env, decode, op);
break;
case 8:
calc_modrm_operand64(env, decode, op);
break;
default:
VM_PANIC_EX("unsupported address size %d\n", decode->addressing_size);
break;
}
}
static void decode_prefix(CPUX86State *env, struct x86_decode *decode)
{
while (1) {
/*
* REX prefix must come after legacy prefixes.
* REX before legacy is ignored.
* Clear rex to simulate this.
*/
uint8_t byte = decode_byte(env, decode);
switch (byte) {
case PREFIX_LOCK:
decode->lock = byte;
decode->rex.rex = 0;
break;
case PREFIX_REPN:
case PREFIX_REP:
decode->rep = byte;
decode->rex.rex = 0;
break;
case PREFIX_CS_SEG_OVERRIDE:
case PREFIX_SS_SEG_OVERRIDE:
case PREFIX_DS_SEG_OVERRIDE:
case PREFIX_ES_SEG_OVERRIDE:
case PREFIX_FS_SEG_OVERRIDE:
case PREFIX_GS_SEG_OVERRIDE:
decode->segment_override = byte;
decode->rex.rex = 0;
break;
case PREFIX_OP_SIZE_OVERRIDE:
decode->op_size_override = byte;
decode->rex.rex = 0;
break;
case PREFIX_ADDR_SIZE_OVERRIDE:
decode->addr_size_override = byte;
decode->rex.rex = 0;
break;
case PREFIX_REX ... (PREFIX_REX + 0xf):
if (x86_is_long_mode(env_cpu(env))) {
decode->rex.rex = byte;
break;
}
/* fall through when not in long mode */
default:
decode->len--;
return;
}
}
}
void set_addressing_size(CPUX86State *env, struct x86_decode *decode)
{
decode->addressing_size = -1;
if (x86_is_real(env_cpu(env)) || x86_is_v8086(env_cpu(env))) {
if (decode->addr_size_override) {
decode->addressing_size = 4;
} else {
decode->addressing_size = 2;
}
} else if (!x86_is_long_mode(env_cpu(env))) {
/* protected */
struct vmx_segment cs;
vmx_read_segment_descriptor(env_cpu(env), &cs, R_CS);
/* check db */
if ((cs.ar >> 14) & 1) {
if (decode->addr_size_override) {
decode->addressing_size = 2;
} else {
decode->addressing_size = 4;
}
} else {
if (decode->addr_size_override) {
decode->addressing_size = 4;
} else {
decode->addressing_size = 2;
}
}
} else {
/* long */
if (decode->addr_size_override) {
decode->addressing_size = 4;
} else {
decode->addressing_size = 8;
}
}
}
void set_operand_size(CPUX86State *env, struct x86_decode *decode)
{
decode->operand_size = -1;
if (x86_is_real(env_cpu(env)) || x86_is_v8086(env_cpu(env))) {
if (decode->op_size_override) {
decode->operand_size = 4;
} else {
decode->operand_size = 2;
}
} else if (!x86_is_long_mode(env_cpu(env))) {
/* protected */
struct vmx_segment cs;
vmx_read_segment_descriptor(env_cpu(env), &cs, R_CS);
/* check db */
if ((cs.ar >> 14) & 1) {
if (decode->op_size_override) {
decode->operand_size = 2;
} else{
decode->operand_size = 4;
}
} else {
if (decode->op_size_override) {
decode->operand_size = 4;
} else {
decode->operand_size = 2;
}
}
} else {
/* long */
if (decode->op_size_override) {
decode->operand_size = 2;
} else {
decode->operand_size = 4;
}
if (decode->rex.w) {
decode->operand_size = 8;
}
}
}
static void decode_sib(CPUX86State *env, struct x86_decode *decode)
{
if ((decode->modrm.mod != 3) && (4 == decode->modrm.rm) &&
(decode->addressing_size != 2)) {
decode->sib.sib = decode_byte(env, decode);
decode->sib_present = true;
}
}
/* 16 bit modrm */
int disp16_tbl[4][8] = {
{0, 0, 0, 0, 0, 0, 2, 0},
{1, 1, 1, 1, 1, 1, 1, 1},
{2, 2, 2, 2, 2, 2, 2, 2},
{0, 0, 0, 0, 0, 0, 0, 0}
};
/* 32/64-bit modrm */
int disp32_tbl[4][8] = {
{0, 0, 0, 0, -1, 4, 0, 0},
{1, 1, 1, 1, 1, 1, 1, 1},
{4, 4, 4, 4, 4, 4, 4, 4},
{0, 0, 0, 0, 0, 0, 0, 0}
};
static inline void decode_displacement(CPUX86State *env, struct x86_decode *decode)
{
int addressing_size = decode->addressing_size;
int mod = decode->modrm.mod;
int rm = decode->modrm.rm;
decode->displacement_size = 0;
switch (addressing_size) {
case 2:
decode->displacement_size = disp16_tbl[mod][rm];
if (decode->displacement_size) {
decode->displacement = (uint16_t)decode_bytes(env, decode,
decode->displacement_size);
}
break;
case 4:
case 8:
if (-1 == disp32_tbl[mod][rm]) {
if (5 == decode->sib.base) {
decode->displacement_size = 4;
}
} else {
decode->displacement_size = disp32_tbl[mod][rm];
}
if (decode->displacement_size) {
decode->displacement = (uint32_t)decode_bytes(env, decode,
decode->displacement_size);
}
break;
}
}
static inline void decode_modrm(CPUX86State *env, struct x86_decode *decode)
{
decode->modrm.modrm = decode_byte(env, decode);
decode->is_modrm = true;
decode_sib(env, decode);
decode_displacement(env, decode);
}
static inline void decode_opcode_general(CPUX86State *env,
struct x86_decode *decode,
uint8_t opcode,
struct decode_tbl *inst_decoder)
{
decode->cmd = inst_decoder->cmd;
if (inst_decoder->operand_size) {
decode->operand_size = inst_decoder->operand_size;
}
decode->flags_mask = inst_decoder->flags_mask;
if (inst_decoder->is_modrm) {
decode_modrm(env, decode);
}
if (inst_decoder->decode_op1) {
inst_decoder->decode_op1(env, decode, &decode->op[0]);
}
if (inst_decoder->decode_op2) {
inst_decoder->decode_op2(env, decode, &decode->op[1]);
}
if (inst_decoder->decode_op3) {
inst_decoder->decode_op3(env, decode, &decode->op[2]);
}
if (inst_decoder->decode_op4) {
inst_decoder->decode_op4(env, decode, &decode->op[3]);
}
if (inst_decoder->decode_postfix) {
inst_decoder->decode_postfix(env, decode);
}
}
static inline void decode_opcode_1(CPUX86State *env, struct x86_decode *decode,
uint8_t opcode)
{
struct decode_tbl *inst_decoder = &_decode_tbl1[opcode];
decode_opcode_general(env, decode, opcode, inst_decoder);
}
static inline void decode_opcode_2(CPUX86State *env, struct x86_decode *decode,
uint8_t opcode)
{
struct decode_tbl *inst_decoder = &_decode_tbl2[opcode];
decode_opcode_general(env, decode, opcode, inst_decoder);
}
static void decode_opcodes(CPUX86State *env, struct x86_decode *decode)
{
uint8_t opcode;
opcode = decode_byte(env, decode);
decode->opcode[decode->opcode_len++] = opcode;
if (opcode != OPCODE_ESCAPE) {
decode_opcode_1(env, decode, opcode);
} else {
opcode = decode_byte(env, decode);
decode->opcode[decode->opcode_len++] = opcode;
decode_opcode_2(env, decode, opcode);
}
}
uint32_t decode_instruction(CPUX86State *env, struct x86_decode *decode)
{
memset(decode, 0, sizeof(*decode));
decode_prefix(env, decode);
set_addressing_size(env, decode);
set_operand_size(env, decode);
decode_opcodes(env, decode);
return decode->len;
}
void init_decoder()
{
int i;
for (i = 0; i < ARRAY_SIZE(_decode_tbl1); i++) {
memcpy(&_decode_tbl1[i], &invl_inst, sizeof(invl_inst));
}
for (i = 0; i < ARRAY_SIZE(_decode_tbl2); i++) {
memcpy(&_decode_tbl2[i], &invl_inst, sizeof(invl_inst));
}
for (i = 0; i < ARRAY_SIZE(_decode_tbl3); i++) {
memcpy(&_decode_tbl3[i], &invl_inst_x87, sizeof(invl_inst_x87));
}
for (i = 0; i < ARRAY_SIZE(_1op_inst); i++) {
_decode_tbl1[_1op_inst[i].opcode] = _1op_inst[i];
}
for (i = 0; i < ARRAY_SIZE(_2op_inst); i++) {
_decode_tbl2[_2op_inst[i].opcode] = _2op_inst[i];
}
for (i = 0; i < ARRAY_SIZE(_x87_inst); i++) {
int index = ((_x87_inst[i].opcode & 0xf) << 4) |
((_x87_inst[i].modrm_mod & 1) << 3) |
_x87_inst[i].modrm_reg;
_decode_tbl3[index] = _x87_inst[i];
}
}
const char *decode_cmd_to_string(enum x86_decode_cmd cmd)
{
static const char *cmds[] = {"INVL", "PUSH", "PUSH_SEG", "POP", "POP_SEG",
"MOV", "MOVSX", "MOVZX", "CALL_NEAR", "CALL_NEAR_ABS_INDIRECT",
"CALL_FAR_ABS_INDIRECT", "CMD_CALL_FAR", "RET_NEAR", "RET_FAR", "ADD",
"OR", "ADC", "SBB", "AND", "SUB", "XOR", "CMP", "INC", "DEC", "TST",
"NOT", "NEG", "JMP_NEAR", "JMP_NEAR_ABS_INDIRECT", "JMP_FAR",
"JMP_FAR_ABS_INDIRECT", "LEA", "JXX", "JCXZ", "SETXX", "MOV_TO_SEG",
"MOV_FROM_SEG", "CLI", "STI", "CLD", "STD", "STC", "CLC", "OUT", "IN",
"INS", "OUTS", "LIDT", "SIDT", "LGDT", "SGDT", "SMSW", "LMSW",
"RDTSCP", "INVLPG", "MOV_TO_CR", "MOV_FROM_CR", "MOV_TO_DR",
"MOV_FROM_DR", "PUSHF", "POPF", "CPUID", "ROL", "ROR", "RCL", "RCR",
"SHL", "SAL", "SHR", "SHRD", "SHLD", "SAR", "DIV", "IDIV", "MUL",
"IMUL_3", "IMUL_2", "IMUL_1", "MOVS", "CMPS", "SCAS", "LODS", "STOS",
"BSWAP", "XCHG", "RDTSC", "RDMSR", "WRMSR", "ENTER", "LEAVE", "BT",
"BTS", "BTC", "BTR", "BSF", "BSR", "IRET", "INT", "POPA", "PUSHA",
"CWD", "CBW", "DAS", "AAD", "AAM", "AAS", "LOOP", "SLDT", "STR", "LLDT",
"LTR", "VERR", "VERW", "SAHF", "LAHF", "WBINVD", "LDS", "LSS", "LES",
"LGS", "LFS", "CMC", "XLAT", "NOP", "CMOV", "CLTS", "XADD", "HLT",
"CMPXCHG8B", "CMPXCHG", "POPCNT", "FNINIT", "FLD", "FLDxx", "FNSTCW",
"FNSTSW", "FNSETPM", "FSAVE", "FRSTOR", "FXSAVE", "FXRSTOR", "FDIV",
"FMUL", "FSUB", "FADD", "EMMS", "MFENCE", "SFENCE", "LFENCE",
"PREFETCH", "FST", "FABS", "FUCOM", "FUCOMI", "FLDCW",
"FXCH", "FCHS", "FCMOV", "FRNDINT", "FXAM", "LAST"};
return cmds[cmd];
}
target_ulong decode_linear_addr(CPUX86State *env, struct x86_decode *decode,
target_ulong addr, X86Seg seg)
{
switch (decode->segment_override) {
case PREFIX_CS_SEG_OVERRIDE:
seg = R_CS;
break;
case PREFIX_SS_SEG_OVERRIDE:
seg = R_SS;
break;
case PREFIX_DS_SEG_OVERRIDE:
seg = R_DS;
break;
case PREFIX_ES_SEG_OVERRIDE:
seg = R_ES;
break;
case PREFIX_FS_SEG_OVERRIDE:
seg = R_FS;
break;
case PREFIX_GS_SEG_OVERRIDE:
seg = R_GS;
break;
default:
break;
}
return linear_addr_size(env_cpu(env), addr, decode->addressing_size, seg);
}
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