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/*
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* i386 translation
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdarg.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <assert.h> |
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#define DEBUG_DISAS
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#define IN_OP_I386
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#include "cpu-i386.h" |
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/* dump all code */
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#ifdef DEBUG_DISAS
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#include "dis-asm.h" |
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#endif
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#ifndef offsetof
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#define offsetof(type, field) ((size_t) &((type *)0)->field) |
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#endif
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static uint8_t *gen_code_ptr;
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int __op_param1, __op_param2, __op_param3;
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extern FILE *logfile;
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extern int loglevel; |
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|
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/* supress that */
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static void error(const char *fmt, ...) |
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{
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va_list ap; |
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va_start(ap, fmt); |
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fprintf(stderr, "\n");
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vfprintf(stderr, fmt, ap); |
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fprintf(stderr, "\n");
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va_end(ap); |
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exit(1);
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} |
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|
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#define PREFIX_REPZ 1 |
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#define PREFIX_REPNZ 2 |
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#define PREFIX_LOCK 4 |
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#define PREFIX_CS 8 |
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#define PREFIX_SS 0x10 |
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#define PREFIX_DS 0x20 |
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#define PREFIX_ES 0x40 |
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#define PREFIX_FS 0x80 |
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#define PREFIX_GS 0x100 |
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#define PREFIX_DATA 0x200 |
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#define PREFIX_ADR 0x400 |
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#define PREFIX_FWAIT 0x800 |
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|
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typedef struct DisasContext { |
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/* current insn context */
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int prefix;
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int aflag, dflag;
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uint8_t *pc; /* current pc */
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int is_jmp; /* 1 = means jump (stop translation), 2 means CPU |
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static state change (stop translation) */
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/* current block context */
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int code32; /* 32 bit code segment */ |
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int cc_op; /* current CC operation */ |
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int addseg; /* non zero if either DS/ES/SS have a non zero base */ |
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int f_st; /* currently unused */ |
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} DisasContext; |
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|
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/* i386 arith/logic operations */
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enum {
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OP_ADDL, |
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OP_ORL, |
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OP_ADCL, |
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OP_SBBL, |
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OP_ANDL, |
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OP_SUBL, |
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OP_XORL, |
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OP_CMPL, |
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}; |
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|
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/* i386 shift ops */
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enum {
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OP_ROL, |
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OP_ROR, |
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OP_RCL, |
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OP_RCR, |
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OP_SHL, |
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OP_SHR, |
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OP_SHL1, /* undocumented */
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OP_SAR = 7,
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}; |
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#include "op-i386.h" |
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|
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/* operand size */
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enum {
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OT_BYTE = 0,
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OT_WORD, |
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OT_LONG, |
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OT_QUAD, |
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}; |
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enum {
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/* I386 int registers */
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OR_EAX, /* MUST be even numbered */
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OR_ECX, |
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OR_EDX, |
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OR_EBX, |
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OR_ESP, |
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OR_EBP, |
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OR_ESI, |
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OR_EDI, |
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OR_TMP0, /* temporary operand register */
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OR_TMP1, |
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OR_A0, /* temporary register used when doing address evaluation */
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OR_ZERO, /* fixed zero register */
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NB_OREGS, |
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}; |
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typedef void (GenOpFunc)(void); |
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typedef void (GenOpFunc1)(long); |
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typedef void (GenOpFunc2)(long, long); |
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|
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static GenOpFunc *gen_op_mov_reg_T0[3][8] = { |
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[OT_BYTE] = {
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gen_op_movb_EAX_T0, |
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gen_op_movb_ECX_T0, |
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gen_op_movb_EDX_T0, |
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gen_op_movb_EBX_T0, |
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gen_op_movh_EAX_T0, |
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gen_op_movh_ECX_T0, |
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gen_op_movh_EDX_T0, |
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gen_op_movh_EBX_T0, |
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}, |
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[OT_WORD] = {
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gen_op_movw_EAX_T0, |
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gen_op_movw_ECX_T0, |
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gen_op_movw_EDX_T0, |
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gen_op_movw_EBX_T0, |
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gen_op_movw_ESP_T0, |
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gen_op_movw_EBP_T0, |
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gen_op_movw_ESI_T0, |
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gen_op_movw_EDI_T0, |
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}, |
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[OT_LONG] = {
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gen_op_movl_EAX_T0, |
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gen_op_movl_ECX_T0, |
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gen_op_movl_EDX_T0, |
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gen_op_movl_EBX_T0, |
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gen_op_movl_ESP_T0, |
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gen_op_movl_EBP_T0, |
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gen_op_movl_ESI_T0, |
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gen_op_movl_EDI_T0, |
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}, |
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}; |
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static GenOpFunc *gen_op_mov_reg_T1[3][8] = { |
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[OT_BYTE] = {
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gen_op_movb_EAX_T1, |
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gen_op_movb_ECX_T1, |
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gen_op_movb_EDX_T1, |
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gen_op_movb_EBX_T1, |
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gen_op_movh_EAX_T1, |
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gen_op_movh_ECX_T1, |
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gen_op_movh_EDX_T1, |
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gen_op_movh_EBX_T1, |
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}, |
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[OT_WORD] = {
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gen_op_movw_EAX_T1, |
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gen_op_movw_ECX_T1, |
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gen_op_movw_EDX_T1, |
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gen_op_movw_EBX_T1, |
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gen_op_movw_ESP_T1, |
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gen_op_movw_EBP_T1, |
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gen_op_movw_ESI_T1, |
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gen_op_movw_EDI_T1, |
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}, |
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[OT_LONG] = {
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gen_op_movl_EAX_T1, |
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gen_op_movl_ECX_T1, |
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gen_op_movl_EDX_T1, |
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gen_op_movl_EBX_T1, |
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gen_op_movl_ESP_T1, |
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gen_op_movl_EBP_T1, |
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gen_op_movl_ESI_T1, |
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gen_op_movl_EDI_T1, |
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}, |
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}; |
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static GenOpFunc *gen_op_mov_reg_A0[2][8] = { |
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[0] = {
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gen_op_movw_EAX_A0, |
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gen_op_movw_ECX_A0, |
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gen_op_movw_EDX_A0, |
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gen_op_movw_EBX_A0, |
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gen_op_movw_ESP_A0, |
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gen_op_movw_EBP_A0, |
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gen_op_movw_ESI_A0, |
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gen_op_movw_EDI_A0, |
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}, |
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[1] = {
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gen_op_movl_EAX_A0, |
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gen_op_movl_ECX_A0, |
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gen_op_movl_EDX_A0, |
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gen_op_movl_EBX_A0, |
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gen_op_movl_ESP_A0, |
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gen_op_movl_EBP_A0, |
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gen_op_movl_ESI_A0, |
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gen_op_movl_EDI_A0, |
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}, |
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}; |
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|
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static GenOpFunc *gen_op_mov_TN_reg[3][2][8] = |
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{
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[OT_BYTE] = {
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{
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gen_op_movl_T0_EAX, |
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gen_op_movl_T0_ECX, |
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gen_op_movl_T0_EDX, |
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gen_op_movl_T0_EBX, |
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gen_op_movh_T0_EAX, |
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gen_op_movh_T0_ECX, |
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gen_op_movh_T0_EDX, |
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gen_op_movh_T0_EBX, |
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}, |
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{
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gen_op_movl_T1_EAX, |
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gen_op_movl_T1_ECX, |
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gen_op_movl_T1_EDX, |
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gen_op_movl_T1_EBX, |
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gen_op_movh_T1_EAX, |
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gen_op_movh_T1_ECX, |
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gen_op_movh_T1_EDX, |
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gen_op_movh_T1_EBX, |
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}, |
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}, |
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[OT_WORD] = {
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{
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gen_op_movl_T0_EAX, |
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gen_op_movl_T0_ECX, |
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gen_op_movl_T0_EDX, |
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gen_op_movl_T0_EBX, |
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gen_op_movl_T0_ESP, |
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gen_op_movl_T0_EBP, |
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gen_op_movl_T0_ESI, |
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gen_op_movl_T0_EDI, |
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}, |
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{
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gen_op_movl_T1_EAX, |
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gen_op_movl_T1_ECX, |
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gen_op_movl_T1_EDX, |
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gen_op_movl_T1_EBX, |
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gen_op_movl_T1_ESP, |
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gen_op_movl_T1_EBP, |
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gen_op_movl_T1_ESI, |
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gen_op_movl_T1_EDI, |
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}, |
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}, |
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[OT_LONG] = {
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{
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gen_op_movl_T0_EAX, |
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gen_op_movl_T0_ECX, |
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gen_op_movl_T0_EDX, |
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gen_op_movl_T0_EBX, |
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gen_op_movl_T0_ESP, |
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gen_op_movl_T0_EBP, |
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gen_op_movl_T0_ESI, |
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gen_op_movl_T0_EDI, |
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}, |
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{
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gen_op_movl_T1_EAX, |
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gen_op_movl_T1_ECX, |
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gen_op_movl_T1_EDX, |
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gen_op_movl_T1_EBX, |
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gen_op_movl_T1_ESP, |
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gen_op_movl_T1_EBP, |
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gen_op_movl_T1_ESI, |
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gen_op_movl_T1_EDI, |
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}, |
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}, |
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}; |
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|
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static GenOpFunc *gen_op_movl_A0_reg[8] = { |
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gen_op_movl_A0_EAX, |
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gen_op_movl_A0_ECX, |
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gen_op_movl_A0_EDX, |
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gen_op_movl_A0_EBX, |
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gen_op_movl_A0_ESP, |
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gen_op_movl_A0_EBP, |
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gen_op_movl_A0_ESI, |
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gen_op_movl_A0_EDI, |
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}; |
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|
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static GenOpFunc *gen_op_addl_A0_reg_sN[4][8] = { |
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[0] = {
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gen_op_addl_A0_EAX, |
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gen_op_addl_A0_ECX, |
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gen_op_addl_A0_EDX, |
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gen_op_addl_A0_EBX, |
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gen_op_addl_A0_ESP, |
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gen_op_addl_A0_EBP, |
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gen_op_addl_A0_ESI, |
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gen_op_addl_A0_EDI, |
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}, |
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[1] = {
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gen_op_addl_A0_EAX_s1, |
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gen_op_addl_A0_ECX_s1, |
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gen_op_addl_A0_EDX_s1, |
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gen_op_addl_A0_EBX_s1, |
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gen_op_addl_A0_ESP_s1, |
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gen_op_addl_A0_EBP_s1, |
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gen_op_addl_A0_ESI_s1, |
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gen_op_addl_A0_EDI_s1, |
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}, |
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[2] = {
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gen_op_addl_A0_EAX_s2, |
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gen_op_addl_A0_ECX_s2, |
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gen_op_addl_A0_EDX_s2, |
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gen_op_addl_A0_EBX_s2, |
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gen_op_addl_A0_ESP_s2, |
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gen_op_addl_A0_EBP_s2, |
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gen_op_addl_A0_ESI_s2, |
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gen_op_addl_A0_EDI_s2, |
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}, |
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[3] = {
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gen_op_addl_A0_EAX_s3, |
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gen_op_addl_A0_ECX_s3, |
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gen_op_addl_A0_EDX_s3, |
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gen_op_addl_A0_EBX_s3, |
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gen_op_addl_A0_ESP_s3, |
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gen_op_addl_A0_EBP_s3, |
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gen_op_addl_A0_ESI_s3, |
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gen_op_addl_A0_EDI_s3, |
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}, |
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}; |
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|
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static GenOpFunc *gen_op_arith_T0_T1_cc[8] = { |
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gen_op_addl_T0_T1_cc, |
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gen_op_orl_T0_T1_cc, |
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NULL,
|
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NULL,
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gen_op_andl_T0_T1_cc, |
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gen_op_subl_T0_T1_cc, |
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gen_op_xorl_T0_T1_cc, |
| 363 |
gen_op_cmpl_T0_T1_cc, |
| 364 |
}; |
| 365 |
|
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static GenOpFunc *gen_op_arithc_T0_T1_cc[3][2] = { |
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[OT_BYTE] = {
|
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gen_op_adcb_T0_T1_cc, |
| 369 |
gen_op_sbbb_T0_T1_cc, |
| 370 |
}, |
| 371 |
[OT_WORD] = {
|
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gen_op_adcw_T0_T1_cc, |
| 373 |
gen_op_sbbw_T0_T1_cc, |
| 374 |
}, |
| 375 |
[OT_LONG] = {
|
| 376 |
gen_op_adcl_T0_T1_cc, |
| 377 |
gen_op_sbbl_T0_T1_cc, |
| 378 |
}, |
| 379 |
}; |
| 380 |
|
| 381 |
static const int cc_op_arithb[8] = { |
| 382 |
CC_OP_ADDB, |
| 383 |
CC_OP_LOGICB, |
| 384 |
CC_OP_ADDB, |
| 385 |
CC_OP_SUBB, |
| 386 |
CC_OP_LOGICB, |
| 387 |
CC_OP_SUBB, |
| 388 |
CC_OP_LOGICB, |
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CC_OP_SUBB, |
| 390 |
}; |
| 391 |
|
| 392 |
static GenOpFunc *gen_op_cmpxchg_T0_T1_EAX_cc[3] = { |
| 393 |
gen_op_cmpxchgb_T0_T1_EAX_cc, |
| 394 |
gen_op_cmpxchgw_T0_T1_EAX_cc, |
| 395 |
gen_op_cmpxchgl_T0_T1_EAX_cc, |
| 396 |
}; |
| 397 |
|
| 398 |
static GenOpFunc *gen_op_shift_T0_T1_cc[3][8] = { |
| 399 |
[OT_BYTE] = {
|
| 400 |
gen_op_rolb_T0_T1_cc, |
| 401 |
gen_op_rorb_T0_T1_cc, |
| 402 |
gen_op_rclb_T0_T1_cc, |
| 403 |
gen_op_rcrb_T0_T1_cc, |
| 404 |
gen_op_shlb_T0_T1_cc, |
| 405 |
gen_op_shrb_T0_T1_cc, |
| 406 |
gen_op_shlb_T0_T1_cc, |
| 407 |
gen_op_sarb_T0_T1_cc, |
| 408 |
}, |
| 409 |
[OT_WORD] = {
|
| 410 |
gen_op_rolw_T0_T1_cc, |
| 411 |
gen_op_rorw_T0_T1_cc, |
| 412 |
gen_op_rclw_T0_T1_cc, |
| 413 |
gen_op_rcrw_T0_T1_cc, |
| 414 |
gen_op_shlw_T0_T1_cc, |
| 415 |
gen_op_shrw_T0_T1_cc, |
| 416 |
gen_op_shlw_T0_T1_cc, |
| 417 |
gen_op_sarw_T0_T1_cc, |
| 418 |
}, |
| 419 |
[OT_LONG] = {
|
| 420 |
gen_op_roll_T0_T1_cc, |
| 421 |
gen_op_rorl_T0_T1_cc, |
| 422 |
gen_op_rcll_T0_T1_cc, |
| 423 |
gen_op_rcrl_T0_T1_cc, |
| 424 |
gen_op_shll_T0_T1_cc, |
| 425 |
gen_op_shrl_T0_T1_cc, |
| 426 |
gen_op_shll_T0_T1_cc, |
| 427 |
gen_op_sarl_T0_T1_cc, |
| 428 |
}, |
| 429 |
}; |
| 430 |
|
| 431 |
static GenOpFunc1 *gen_op_shiftd_T0_T1_im_cc[2][2] = { |
| 432 |
[0] = {
|
| 433 |
gen_op_shldw_T0_T1_im_cc, |
| 434 |
gen_op_shrdw_T0_T1_im_cc, |
| 435 |
}, |
| 436 |
[1] = {
|
| 437 |
gen_op_shldl_T0_T1_im_cc, |
| 438 |
gen_op_shrdl_T0_T1_im_cc, |
| 439 |
}, |
| 440 |
}; |
| 441 |
|
| 442 |
static GenOpFunc *gen_op_shiftd_T0_T1_ECX_cc[2][2] = { |
| 443 |
[0] = {
|
| 444 |
gen_op_shldw_T0_T1_ECX_cc, |
| 445 |
gen_op_shrdw_T0_T1_ECX_cc, |
| 446 |
}, |
| 447 |
[1] = {
|
| 448 |
gen_op_shldl_T0_T1_ECX_cc, |
| 449 |
gen_op_shrdl_T0_T1_ECX_cc, |
| 450 |
}, |
| 451 |
}; |
| 452 |
|
| 453 |
static GenOpFunc *gen_op_btx_T0_T1_cc[2][4] = { |
| 454 |
[0] = {
|
| 455 |
gen_op_btw_T0_T1_cc, |
| 456 |
gen_op_btsw_T0_T1_cc, |
| 457 |
gen_op_btrw_T0_T1_cc, |
| 458 |
gen_op_btcw_T0_T1_cc, |
| 459 |
}, |
| 460 |
[1] = {
|
| 461 |
gen_op_btl_T0_T1_cc, |
| 462 |
gen_op_btsl_T0_T1_cc, |
| 463 |
gen_op_btrl_T0_T1_cc, |
| 464 |
gen_op_btcl_T0_T1_cc, |
| 465 |
}, |
| 466 |
}; |
| 467 |
|
| 468 |
static GenOpFunc *gen_op_bsx_T0_cc[2][2] = { |
| 469 |
[0] = {
|
| 470 |
gen_op_bsfw_T0_cc, |
| 471 |
gen_op_bsrw_T0_cc, |
| 472 |
}, |
| 473 |
[1] = {
|
| 474 |
gen_op_bsfl_T0_cc, |
| 475 |
gen_op_bsrl_T0_cc, |
| 476 |
}, |
| 477 |
}; |
| 478 |
|
| 479 |
static GenOpFunc *gen_op_lds_T0_A0[3] = { |
| 480 |
gen_op_ldsb_T0_A0, |
| 481 |
gen_op_ldsw_T0_A0, |
| 482 |
}; |
| 483 |
|
| 484 |
static GenOpFunc *gen_op_ldu_T0_A0[3] = { |
| 485 |
gen_op_ldub_T0_A0, |
| 486 |
gen_op_lduw_T0_A0, |
| 487 |
}; |
| 488 |
|
| 489 |
/* sign does not matter */
|
| 490 |
static GenOpFunc *gen_op_ld_T0_A0[3] = { |
| 491 |
gen_op_ldub_T0_A0, |
| 492 |
gen_op_lduw_T0_A0, |
| 493 |
gen_op_ldl_T0_A0, |
| 494 |
}; |
| 495 |
|
| 496 |
static GenOpFunc *gen_op_ld_T1_A0[3] = { |
| 497 |
gen_op_ldub_T1_A0, |
| 498 |
gen_op_lduw_T1_A0, |
| 499 |
gen_op_ldl_T1_A0, |
| 500 |
}; |
| 501 |
|
| 502 |
static GenOpFunc *gen_op_st_T0_A0[3] = { |
| 503 |
gen_op_stb_T0_A0, |
| 504 |
gen_op_stw_T0_A0, |
| 505 |
gen_op_stl_T0_A0, |
| 506 |
}; |
| 507 |
|
| 508 |
static GenOpFunc *gen_op_movs[6] = { |
| 509 |
gen_op_movsb, |
| 510 |
gen_op_movsw, |
| 511 |
gen_op_movsl, |
| 512 |
gen_op_rep_movsb, |
| 513 |
gen_op_rep_movsw, |
| 514 |
gen_op_rep_movsl, |
| 515 |
}; |
| 516 |
|
| 517 |
static GenOpFunc *gen_op_stos[6] = { |
| 518 |
gen_op_stosb, |
| 519 |
gen_op_stosw, |
| 520 |
gen_op_stosl, |
| 521 |
gen_op_rep_stosb, |
| 522 |
gen_op_rep_stosw, |
| 523 |
gen_op_rep_stosl, |
| 524 |
}; |
| 525 |
|
| 526 |
static GenOpFunc *gen_op_lods[6] = { |
| 527 |
gen_op_lodsb, |
| 528 |
gen_op_lodsw, |
| 529 |
gen_op_lodsl, |
| 530 |
gen_op_rep_lodsb, |
| 531 |
gen_op_rep_lodsw, |
| 532 |
gen_op_rep_lodsl, |
| 533 |
}; |
| 534 |
|
| 535 |
static GenOpFunc *gen_op_scas[9] = { |
| 536 |
gen_op_scasb, |
| 537 |
gen_op_scasw, |
| 538 |
gen_op_scasl, |
| 539 |
gen_op_repz_scasb, |
| 540 |
gen_op_repz_scasw, |
| 541 |
gen_op_repz_scasl, |
| 542 |
gen_op_repnz_scasb, |
| 543 |
gen_op_repnz_scasw, |
| 544 |
gen_op_repnz_scasl, |
| 545 |
}; |
| 546 |
|
| 547 |
static GenOpFunc *gen_op_cmps[9] = { |
| 548 |
gen_op_cmpsb, |
| 549 |
gen_op_cmpsw, |
| 550 |
gen_op_cmpsl, |
| 551 |
gen_op_repz_cmpsb, |
| 552 |
gen_op_repz_cmpsw, |
| 553 |
gen_op_repz_cmpsl, |
| 554 |
gen_op_repnz_cmpsb, |
| 555 |
gen_op_repnz_cmpsw, |
| 556 |
gen_op_repnz_cmpsl, |
| 557 |
}; |
| 558 |
|
| 559 |
static GenOpFunc *gen_op_ins[6] = { |
| 560 |
gen_op_insb, |
| 561 |
gen_op_insw, |
| 562 |
gen_op_insl, |
| 563 |
gen_op_rep_insb, |
| 564 |
gen_op_rep_insw, |
| 565 |
gen_op_rep_insl, |
| 566 |
}; |
| 567 |
|
| 568 |
|
| 569 |
static GenOpFunc *gen_op_outs[6] = { |
| 570 |
gen_op_outsb, |
| 571 |
gen_op_outsw, |
| 572 |
gen_op_outsl, |
| 573 |
gen_op_rep_outsb, |
| 574 |
gen_op_rep_outsw, |
| 575 |
gen_op_rep_outsl, |
| 576 |
}; |
| 577 |
|
| 578 |
static GenOpFunc *gen_op_in[3] = { |
| 579 |
gen_op_inb_T0_T1, |
| 580 |
gen_op_inw_T0_T1, |
| 581 |
gen_op_inl_T0_T1, |
| 582 |
}; |
| 583 |
|
| 584 |
static GenOpFunc *gen_op_out[3] = { |
| 585 |
gen_op_outb_T0_T1, |
| 586 |
gen_op_outw_T0_T1, |
| 587 |
gen_op_outl_T0_T1, |
| 588 |
}; |
| 589 |
|
| 590 |
enum {
|
| 591 |
JCC_O, |
| 592 |
JCC_B, |
| 593 |
JCC_Z, |
| 594 |
JCC_BE, |
| 595 |
JCC_S, |
| 596 |
JCC_P, |
| 597 |
JCC_L, |
| 598 |
JCC_LE, |
| 599 |
}; |
| 600 |
|
| 601 |
static GenOpFunc2 *gen_jcc_slow[8] = { |
| 602 |
gen_op_jo_cc, |
| 603 |
gen_op_jb_cc, |
| 604 |
gen_op_jz_cc, |
| 605 |
gen_op_jbe_cc, |
| 606 |
gen_op_js_cc, |
| 607 |
gen_op_jp_cc, |
| 608 |
gen_op_jl_cc, |
| 609 |
gen_op_jle_cc, |
| 610 |
}; |
| 611 |
|
| 612 |
static GenOpFunc2 *gen_jcc_sub[3][8] = { |
| 613 |
[OT_BYTE] = {
|
| 614 |
NULL,
|
| 615 |
gen_op_jb_subb, |
| 616 |
gen_op_jz_subb, |
| 617 |
gen_op_jbe_subb, |
| 618 |
gen_op_js_subb, |
| 619 |
NULL,
|
| 620 |
gen_op_jl_subb, |
| 621 |
gen_op_jle_subb, |
| 622 |
}, |
| 623 |
[OT_WORD] = {
|
| 624 |
NULL,
|
| 625 |
gen_op_jb_subw, |
| 626 |
gen_op_jz_subw, |
| 627 |
gen_op_jbe_subw, |
| 628 |
gen_op_js_subw, |
| 629 |
NULL,
|
| 630 |
gen_op_jl_subw, |
| 631 |
gen_op_jle_subw, |
| 632 |
}, |
| 633 |
[OT_LONG] = {
|
| 634 |
NULL,
|
| 635 |
gen_op_jb_subl, |
| 636 |
gen_op_jz_subl, |
| 637 |
gen_op_jbe_subl, |
| 638 |
gen_op_js_subl, |
| 639 |
NULL,
|
| 640 |
gen_op_jl_subl, |
| 641 |
gen_op_jle_subl, |
| 642 |
}, |
| 643 |
}; |
| 644 |
static GenOpFunc2 *gen_op_loop[2][4] = { |
| 645 |
[0] = {
|
| 646 |
gen_op_loopnzw, |
| 647 |
gen_op_loopzw, |
| 648 |
gen_op_loopw, |
| 649 |
gen_op_jecxzw, |
| 650 |
}, |
| 651 |
[1] = {
|
| 652 |
gen_op_loopnzl, |
| 653 |
gen_op_loopzl, |
| 654 |
gen_op_loopl, |
| 655 |
gen_op_jecxzl, |
| 656 |
}, |
| 657 |
}; |
| 658 |
|
| 659 |
static GenOpFunc *gen_setcc_slow[8] = { |
| 660 |
gen_op_seto_T0_cc, |
| 661 |
gen_op_setb_T0_cc, |
| 662 |
gen_op_setz_T0_cc, |
| 663 |
gen_op_setbe_T0_cc, |
| 664 |
gen_op_sets_T0_cc, |
| 665 |
gen_op_setp_T0_cc, |
| 666 |
gen_op_setl_T0_cc, |
| 667 |
gen_op_setle_T0_cc, |
| 668 |
}; |
| 669 |
|
| 670 |
static GenOpFunc *gen_setcc_sub[3][8] = { |
| 671 |
[OT_BYTE] = {
|
| 672 |
NULL,
|
| 673 |
gen_op_setb_T0_subb, |
| 674 |
gen_op_setz_T0_subb, |
| 675 |
gen_op_setbe_T0_subb, |
| 676 |
gen_op_sets_T0_subb, |
| 677 |
NULL,
|
| 678 |
gen_op_setl_T0_subb, |
| 679 |
gen_op_setle_T0_subb, |
| 680 |
}, |
| 681 |
[OT_WORD] = {
|
| 682 |
NULL,
|
| 683 |
gen_op_setb_T0_subw, |
| 684 |
gen_op_setz_T0_subw, |
| 685 |
gen_op_setbe_T0_subw, |
| 686 |
gen_op_sets_T0_subw, |
| 687 |
NULL,
|
| 688 |
gen_op_setl_T0_subw, |
| 689 |
gen_op_setle_T0_subw, |
| 690 |
}, |
| 691 |
[OT_LONG] = {
|
| 692 |
NULL,
|
| 693 |
gen_op_setb_T0_subl, |
| 694 |
gen_op_setz_T0_subl, |
| 695 |
gen_op_setbe_T0_subl, |
| 696 |
gen_op_sets_T0_subl, |
| 697 |
NULL,
|
| 698 |
gen_op_setl_T0_subl, |
| 699 |
gen_op_setle_T0_subl, |
| 700 |
}, |
| 701 |
}; |
| 702 |
|
| 703 |
static GenOpFunc *gen_op_fp_arith_ST0_FT0[8] = { |
| 704 |
gen_op_fadd_ST0_FT0, |
| 705 |
gen_op_fmul_ST0_FT0, |
| 706 |
gen_op_fcom_ST0_FT0, |
| 707 |
gen_op_fcom_ST0_FT0, |
| 708 |
gen_op_fsub_ST0_FT0, |
| 709 |
gen_op_fsubr_ST0_FT0, |
| 710 |
gen_op_fdiv_ST0_FT0, |
| 711 |
gen_op_fdivr_ST0_FT0, |
| 712 |
}; |
| 713 |
|
| 714 |
/* NOTE the exception in "r" op ordering */
|
| 715 |
static GenOpFunc1 *gen_op_fp_arith_STN_ST0[8] = { |
| 716 |
gen_op_fadd_STN_ST0, |
| 717 |
gen_op_fmul_STN_ST0, |
| 718 |
NULL,
|
| 719 |
NULL,
|
| 720 |
gen_op_fsubr_STN_ST0, |
| 721 |
gen_op_fsub_STN_ST0, |
| 722 |
gen_op_fdivr_STN_ST0, |
| 723 |
gen_op_fdiv_STN_ST0, |
| 724 |
}; |
| 725 |
|
| 726 |
static void gen_op(DisasContext *s1, int op, int ot, int d, int s) |
| 727 |
{
|
| 728 |
if (d != OR_TMP0)
|
| 729 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 730 |
if (s != OR_TMP1)
|
| 731 |
gen_op_mov_TN_reg[ot][1][s]();
|
| 732 |
if (op == OP_ADCL || op == OP_SBBL) {
|
| 733 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 734 |
gen_op_set_cc_op(s1->cc_op); |
| 735 |
gen_op_arithc_T0_T1_cc[ot][op - OP_ADCL](); |
| 736 |
s1->cc_op = CC_OP_DYNAMIC; |
| 737 |
} else {
|
| 738 |
gen_op_arith_T0_T1_cc[op](); |
| 739 |
s1->cc_op = cc_op_arithb[op] + ot; |
| 740 |
} |
| 741 |
if (d != OR_TMP0 && op != OP_CMPL)
|
| 742 |
gen_op_mov_reg_T0[ot][d](); |
| 743 |
} |
| 744 |
|
| 745 |
static void gen_opi(DisasContext *s1, int op, int ot, int d, int c) |
| 746 |
{
|
| 747 |
gen_op_movl_T1_im(c); |
| 748 |
gen_op(s1, op, ot, d, OR_TMP1); |
| 749 |
} |
| 750 |
|
| 751 |
static void gen_inc(DisasContext *s1, int ot, int d, int c) |
| 752 |
{
|
| 753 |
if (d != OR_TMP0)
|
| 754 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 755 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 756 |
gen_op_set_cc_op(s1->cc_op); |
| 757 |
if (c > 0) { |
| 758 |
gen_op_incl_T0_cc(); |
| 759 |
s1->cc_op = CC_OP_INCB + ot; |
| 760 |
} else {
|
| 761 |
gen_op_decl_T0_cc(); |
| 762 |
s1->cc_op = CC_OP_DECB + ot; |
| 763 |
} |
| 764 |
if (d != OR_TMP0)
|
| 765 |
gen_op_mov_reg_T0[ot][d](); |
| 766 |
} |
| 767 |
|
| 768 |
static void gen_shift(DisasContext *s1, int op, int ot, int d, int s) |
| 769 |
{
|
| 770 |
if (d != OR_TMP0)
|
| 771 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 772 |
if (s != OR_TMP1)
|
| 773 |
gen_op_mov_TN_reg[ot][1][s]();
|
| 774 |
/* for zero counts, flags are not updated, so must do it dynamically */
|
| 775 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 776 |
gen_op_set_cc_op(s1->cc_op); |
| 777 |
|
| 778 |
gen_op_shift_T0_T1_cc[ot][op](); |
| 779 |
|
| 780 |
if (d != OR_TMP0)
|
| 781 |
gen_op_mov_reg_T0[ot][d](); |
| 782 |
s1->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 783 |
} |
| 784 |
|
| 785 |
static void gen_shifti(DisasContext *s1, int op, int ot, int d, int c) |
| 786 |
{
|
| 787 |
/* currently not optimized */
|
| 788 |
gen_op_movl_T1_im(c); |
| 789 |
gen_shift(s1, op, ot, d, OR_TMP1); |
| 790 |
} |
| 791 |
|
| 792 |
static void gen_lea_modrm(DisasContext *s, int modrm, int *reg_ptr, int *offset_ptr) |
| 793 |
{
|
| 794 |
int havesib;
|
| 795 |
int base, disp;
|
| 796 |
int index;
|
| 797 |
int scale;
|
| 798 |
int opreg;
|
| 799 |
int mod, rm, code, override, must_add_seg;
|
| 800 |
|
| 801 |
/* XXX: add a generation time variable to tell if base == 0 in DS/ES/SS */
|
| 802 |
override = -1;
|
| 803 |
must_add_seg = s->addseg; |
| 804 |
if (s->prefix & (PREFIX_CS | PREFIX_SS | PREFIX_DS |
|
| 805 |
PREFIX_ES | PREFIX_FS | PREFIX_GS)) {
|
| 806 |
if (s->prefix & PREFIX_ES)
|
| 807 |
override = R_ES; |
| 808 |
else if (s->prefix & PREFIX_CS) |
| 809 |
override = R_CS; |
| 810 |
else if (s->prefix & PREFIX_SS) |
| 811 |
override = R_SS; |
| 812 |
else if (s->prefix & PREFIX_DS) |
| 813 |
override = R_DS; |
| 814 |
else if (s->prefix & PREFIX_FS) |
| 815 |
override = R_FS; |
| 816 |
else
|
| 817 |
override = R_GS; |
| 818 |
must_add_seg = 1;
|
| 819 |
} |
| 820 |
|
| 821 |
mod = (modrm >> 6) & 3; |
| 822 |
rm = modrm & 7;
|
| 823 |
|
| 824 |
if (s->aflag) {
|
| 825 |
|
| 826 |
havesib = 0;
|
| 827 |
base = rm; |
| 828 |
index = 0;
|
| 829 |
scale = 0;
|
| 830 |
|
| 831 |
if (base == 4) { |
| 832 |
havesib = 1;
|
| 833 |
code = ldub(s->pc++); |
| 834 |
scale = (code >> 6) & 3; |
| 835 |
index = (code >> 3) & 7; |
| 836 |
base = code & 7;
|
| 837 |
} |
| 838 |
|
| 839 |
switch (mod) {
|
| 840 |
case 0: |
| 841 |
if (base == 5) { |
| 842 |
base = -1;
|
| 843 |
disp = ldl(s->pc); |
| 844 |
s->pc += 4;
|
| 845 |
} else {
|
| 846 |
disp = 0;
|
| 847 |
} |
| 848 |
break;
|
| 849 |
case 1: |
| 850 |
disp = (int8_t)ldub(s->pc++); |
| 851 |
break;
|
| 852 |
default:
|
| 853 |
case 2: |
| 854 |
disp = ldl(s->pc); |
| 855 |
s->pc += 4;
|
| 856 |
break;
|
| 857 |
} |
| 858 |
|
| 859 |
if (base >= 0) { |
| 860 |
gen_op_movl_A0_reg[base](); |
| 861 |
if (disp != 0) |
| 862 |
gen_op_addl_A0_im(disp); |
| 863 |
} else {
|
| 864 |
gen_op_movl_A0_im(disp); |
| 865 |
} |
| 866 |
if (havesib && (index != 4 || scale != 0)) { |
| 867 |
gen_op_addl_A0_reg_sN[scale][index](); |
| 868 |
} |
| 869 |
if (must_add_seg) {
|
| 870 |
if (override < 0) { |
| 871 |
if (base == R_EBP || base == R_ESP)
|
| 872 |
override = R_SS; |
| 873 |
else
|
| 874 |
override = R_DS; |
| 875 |
} |
| 876 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 877 |
} |
| 878 |
} else {
|
| 879 |
switch (mod) {
|
| 880 |
case 0: |
| 881 |
if (rm == 6) { |
| 882 |
disp = lduw(s->pc); |
| 883 |
s->pc += 2;
|
| 884 |
gen_op_movl_A0_im(disp); |
| 885 |
rm = 0; /* avoid SS override */ |
| 886 |
goto no_rm;
|
| 887 |
} else {
|
| 888 |
disp = 0;
|
| 889 |
} |
| 890 |
break;
|
| 891 |
case 1: |
| 892 |
disp = (int8_t)ldub(s->pc++); |
| 893 |
break;
|
| 894 |
default:
|
| 895 |
case 2: |
| 896 |
disp = lduw(s->pc); |
| 897 |
s->pc += 2;
|
| 898 |
break;
|
| 899 |
} |
| 900 |
switch(rm) {
|
| 901 |
case 0: |
| 902 |
gen_op_movl_A0_reg[R_EBX](); |
| 903 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
| 904 |
break;
|
| 905 |
case 1: |
| 906 |
gen_op_movl_A0_reg[R_EBX](); |
| 907 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
| 908 |
break;
|
| 909 |
case 2: |
| 910 |
gen_op_movl_A0_reg[R_EBP](); |
| 911 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
| 912 |
break;
|
| 913 |
case 3: |
| 914 |
gen_op_movl_A0_reg[R_EBP](); |
| 915 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
| 916 |
break;
|
| 917 |
case 4: |
| 918 |
gen_op_movl_A0_reg[R_ESI](); |
| 919 |
break;
|
| 920 |
case 5: |
| 921 |
gen_op_movl_A0_reg[R_EDI](); |
| 922 |
break;
|
| 923 |
case 6: |
| 924 |
gen_op_movl_A0_reg[R_EBP](); |
| 925 |
break;
|
| 926 |
default:
|
| 927 |
case 7: |
| 928 |
gen_op_movl_A0_reg[R_EBX](); |
| 929 |
break;
|
| 930 |
} |
| 931 |
if (disp != 0) |
| 932 |
gen_op_addl_A0_im(disp); |
| 933 |
gen_op_andl_A0_ffff(); |
| 934 |
no_rm:
|
| 935 |
if (must_add_seg) {
|
| 936 |
if (override < 0) { |
| 937 |
if (rm == 2 || rm == 3 || rm == 6) |
| 938 |
override = R_SS; |
| 939 |
else
|
| 940 |
override = R_DS; |
| 941 |
} |
| 942 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 943 |
} |
| 944 |
} |
| 945 |
|
| 946 |
opreg = OR_A0; |
| 947 |
disp = 0;
|
| 948 |
*reg_ptr = opreg; |
| 949 |
*offset_ptr = disp; |
| 950 |
} |
| 951 |
|
| 952 |
/* generate modrm memory load or store of 'reg'. TMP0 is used if reg !=
|
| 953 |
OR_TMP0 */
|
| 954 |
static void gen_ldst_modrm(DisasContext *s, int modrm, int ot, int reg, int is_store) |
| 955 |
{
|
| 956 |
int mod, rm, opreg, disp;
|
| 957 |
|
| 958 |
mod = (modrm >> 6) & 3; |
| 959 |
rm = modrm & 7;
|
| 960 |
if (mod == 3) { |
| 961 |
if (is_store) {
|
| 962 |
if (reg != OR_TMP0)
|
| 963 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 964 |
gen_op_mov_reg_T0[ot][rm](); |
| 965 |
} else {
|
| 966 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 967 |
if (reg != OR_TMP0)
|
| 968 |
gen_op_mov_reg_T0[ot][reg](); |
| 969 |
} |
| 970 |
} else {
|
| 971 |
gen_lea_modrm(s, modrm, &opreg, &disp); |
| 972 |
if (is_store) {
|
| 973 |
if (reg != OR_TMP0)
|
| 974 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 975 |
gen_op_st_T0_A0[ot](); |
| 976 |
} else {
|
| 977 |
gen_op_ld_T0_A0[ot](); |
| 978 |
if (reg != OR_TMP0)
|
| 979 |
gen_op_mov_reg_T0[ot][reg](); |
| 980 |
} |
| 981 |
} |
| 982 |
} |
| 983 |
|
| 984 |
static inline uint32_t insn_get(DisasContext *s, int ot) |
| 985 |
{
|
| 986 |
uint32_t ret; |
| 987 |
|
| 988 |
switch(ot) {
|
| 989 |
case OT_BYTE:
|
| 990 |
ret = ldub(s->pc); |
| 991 |
s->pc++; |
| 992 |
break;
|
| 993 |
case OT_WORD:
|
| 994 |
ret = lduw(s->pc); |
| 995 |
s->pc += 2;
|
| 996 |
break;
|
| 997 |
default:
|
| 998 |
case OT_LONG:
|
| 999 |
ret = ldl(s->pc); |
| 1000 |
s->pc += 4;
|
| 1001 |
break;
|
| 1002 |
} |
| 1003 |
return ret;
|
| 1004 |
} |
| 1005 |
|
| 1006 |
static void gen_jcc(DisasContext *s, int b, int val) |
| 1007 |
{
|
| 1008 |
int inv, jcc_op;
|
| 1009 |
GenOpFunc2 *func; |
| 1010 |
|
| 1011 |
inv = b & 1;
|
| 1012 |
jcc_op = (b >> 1) & 7; |
| 1013 |
switch(s->cc_op) {
|
| 1014 |
/* we optimize the cmp/jcc case */
|
| 1015 |
case CC_OP_SUBB:
|
| 1016 |
case CC_OP_SUBW:
|
| 1017 |
case CC_OP_SUBL:
|
| 1018 |
func = gen_jcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
| 1019 |
if (!func)
|
| 1020 |
goto slow_jcc;
|
| 1021 |
break;
|
| 1022 |
|
| 1023 |
/* some jumps are easy to compute */
|
| 1024 |
case CC_OP_ADDB:
|
| 1025 |
case CC_OP_ADDW:
|
| 1026 |
case CC_OP_ADDL:
|
| 1027 |
case CC_OP_ADCB:
|
| 1028 |
case CC_OP_ADCW:
|
| 1029 |
case CC_OP_ADCL:
|
| 1030 |
case CC_OP_SBBB:
|
| 1031 |
case CC_OP_SBBW:
|
| 1032 |
case CC_OP_SBBL:
|
| 1033 |
case CC_OP_LOGICB:
|
| 1034 |
case CC_OP_LOGICW:
|
| 1035 |
case CC_OP_LOGICL:
|
| 1036 |
case CC_OP_INCB:
|
| 1037 |
case CC_OP_INCW:
|
| 1038 |
case CC_OP_INCL:
|
| 1039 |
case CC_OP_DECB:
|
| 1040 |
case CC_OP_DECW:
|
| 1041 |
case CC_OP_DECL:
|
| 1042 |
case CC_OP_SHLB:
|
| 1043 |
case CC_OP_SHLW:
|
| 1044 |
case CC_OP_SHLL:
|
| 1045 |
case CC_OP_SARB:
|
| 1046 |
case CC_OP_SARW:
|
| 1047 |
case CC_OP_SARL:
|
| 1048 |
switch(jcc_op) {
|
| 1049 |
case JCC_Z:
|
| 1050 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1051 |
break;
|
| 1052 |
case JCC_S:
|
| 1053 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1054 |
break;
|
| 1055 |
default:
|
| 1056 |
goto slow_jcc;
|
| 1057 |
} |
| 1058 |
break;
|
| 1059 |
default:
|
| 1060 |
slow_jcc:
|
| 1061 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 1062 |
gen_op_set_cc_op(s->cc_op); |
| 1063 |
func = gen_jcc_slow[jcc_op]; |
| 1064 |
break;
|
| 1065 |
} |
| 1066 |
if (!inv) {
|
| 1067 |
func(val, (long)s->pc);
|
| 1068 |
} else {
|
| 1069 |
func((long)s->pc, val);
|
| 1070 |
} |
| 1071 |
} |
| 1072 |
|
| 1073 |
static void gen_setcc(DisasContext *s, int b) |
| 1074 |
{
|
| 1075 |
int inv, jcc_op;
|
| 1076 |
GenOpFunc *func; |
| 1077 |
|
| 1078 |
inv = b & 1;
|
| 1079 |
jcc_op = (b >> 1) & 7; |
| 1080 |
switch(s->cc_op) {
|
| 1081 |
/* we optimize the cmp/jcc case */
|
| 1082 |
case CC_OP_SUBB:
|
| 1083 |
case CC_OP_SUBW:
|
| 1084 |
case CC_OP_SUBL:
|
| 1085 |
func = gen_setcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
| 1086 |
if (!func)
|
| 1087 |
goto slow_jcc;
|
| 1088 |
break;
|
| 1089 |
|
| 1090 |
/* some jumps are easy to compute */
|
| 1091 |
case CC_OP_ADDB:
|
| 1092 |
case CC_OP_ADDW:
|
| 1093 |
case CC_OP_ADDL:
|
| 1094 |
case CC_OP_LOGICB:
|
| 1095 |
case CC_OP_LOGICW:
|
| 1096 |
case CC_OP_LOGICL:
|
| 1097 |
case CC_OP_INCB:
|
| 1098 |
case CC_OP_INCW:
|
| 1099 |
case CC_OP_INCL:
|
| 1100 |
case CC_OP_DECB:
|
| 1101 |
case CC_OP_DECW:
|
| 1102 |
case CC_OP_DECL:
|
| 1103 |
case CC_OP_SHLB:
|
| 1104 |
case CC_OP_SHLW:
|
| 1105 |
case CC_OP_SHLL:
|
| 1106 |
switch(jcc_op) {
|
| 1107 |
case JCC_Z:
|
| 1108 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1109 |
break;
|
| 1110 |
case JCC_S:
|
| 1111 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1112 |
break;
|
| 1113 |
default:
|
| 1114 |
goto slow_jcc;
|
| 1115 |
} |
| 1116 |
break;
|
| 1117 |
default:
|
| 1118 |
slow_jcc:
|
| 1119 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 1120 |
gen_op_set_cc_op(s->cc_op); |
| 1121 |
func = gen_setcc_slow[jcc_op]; |
| 1122 |
break;
|
| 1123 |
} |
| 1124 |
func(); |
| 1125 |
if (inv) {
|
| 1126 |
gen_op_xor_T0_1(); |
| 1127 |
} |
| 1128 |
} |
| 1129 |
|
| 1130 |
/* move T0 to seg_reg and compute if the CPU state may change */
|
| 1131 |
void gen_movl_seg_T0(DisasContext *s, int seg_reg) |
| 1132 |
{
|
| 1133 |
gen_op_movl_seg_T0(seg_reg); |
| 1134 |
if (!s->addseg && seg_reg < R_FS)
|
| 1135 |
s->is_jmp = 2; /* abort translation because the register may |
| 1136 |
have a non zero base */
|
| 1137 |
} |
| 1138 |
|
| 1139 |
/* return the next pc address. Return -1 if no insn found. *is_jmp_ptr
|
| 1140 |
is set to true if the instruction sets the PC (last instruction of
|
| 1141 |
a basic block) */
|
| 1142 |
long disas_insn(DisasContext *s, uint8_t *pc_start)
|
| 1143 |
{
|
| 1144 |
int b, prefixes, aflag, dflag;
|
| 1145 |
int shift, ot;
|
| 1146 |
int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;
|
| 1147 |
|
| 1148 |
s->pc = pc_start; |
| 1149 |
prefixes = 0;
|
| 1150 |
aflag = s->code32; |
| 1151 |
dflag = s->code32; |
| 1152 |
// cur_pc = s->pc; /* for insn generation */
|
| 1153 |
next_byte:
|
| 1154 |
b = ldub(s->pc); |
| 1155 |
s->pc++; |
| 1156 |
/* check prefixes */
|
| 1157 |
switch (b) {
|
| 1158 |
case 0xf3: |
| 1159 |
prefixes |= PREFIX_REPZ; |
| 1160 |
goto next_byte;
|
| 1161 |
case 0xf2: |
| 1162 |
prefixes |= PREFIX_REPNZ; |
| 1163 |
goto next_byte;
|
| 1164 |
case 0xf0: |
| 1165 |
prefixes |= PREFIX_LOCK; |
| 1166 |
goto next_byte;
|
| 1167 |
case 0x2e: |
| 1168 |
prefixes |= PREFIX_CS; |
| 1169 |
goto next_byte;
|
| 1170 |
case 0x36: |
| 1171 |
prefixes |= PREFIX_SS; |
| 1172 |
goto next_byte;
|
| 1173 |
case 0x3e: |
| 1174 |
prefixes |= PREFIX_DS; |
| 1175 |
goto next_byte;
|
| 1176 |
case 0x26: |
| 1177 |
prefixes |= PREFIX_ES; |
| 1178 |
goto next_byte;
|
| 1179 |
case 0x64: |
| 1180 |
prefixes |= PREFIX_FS; |
| 1181 |
goto next_byte;
|
| 1182 |
case 0x65: |
| 1183 |
prefixes |= PREFIX_GS; |
| 1184 |
goto next_byte;
|
| 1185 |
case 0x66: |
| 1186 |
prefixes |= PREFIX_DATA; |
| 1187 |
goto next_byte;
|
| 1188 |
case 0x67: |
| 1189 |
prefixes |= PREFIX_ADR; |
| 1190 |
goto next_byte;
|
| 1191 |
case 0x9b: |
| 1192 |
prefixes |= PREFIX_FWAIT; |
| 1193 |
goto next_byte;
|
| 1194 |
} |
| 1195 |
|
| 1196 |
if (prefixes & PREFIX_DATA)
|
| 1197 |
dflag ^= 1;
|
| 1198 |
if (prefixes & PREFIX_ADR)
|
| 1199 |
aflag ^= 1;
|
| 1200 |
|
| 1201 |
s->prefix = prefixes; |
| 1202 |
s->aflag = aflag; |
| 1203 |
s->dflag = dflag; |
| 1204 |
|
| 1205 |
/* now check op code */
|
| 1206 |
reswitch:
|
| 1207 |
switch(b) {
|
| 1208 |
case 0x0f: |
| 1209 |
/**************************/
|
| 1210 |
/* extended op code */
|
| 1211 |
b = ldub(s->pc++) | 0x100;
|
| 1212 |
goto reswitch;
|
| 1213 |
|
| 1214 |
/**************************/
|
| 1215 |
/* arith & logic */
|
| 1216 |
case 0x00 ... 0x05: |
| 1217 |
case 0x08 ... 0x0d: |
| 1218 |
case 0x10 ... 0x15: |
| 1219 |
case 0x18 ... 0x1d: |
| 1220 |
case 0x20 ... 0x25: |
| 1221 |
case 0x28 ... 0x2d: |
| 1222 |
case 0x30 ... 0x35: |
| 1223 |
case 0x38 ... 0x3d: |
| 1224 |
{
|
| 1225 |
int op, f, val;
|
| 1226 |
op = (b >> 3) & 7; |
| 1227 |
f = (b >> 1) & 3; |
| 1228 |
|
| 1229 |
if ((b & 1) == 0) |
| 1230 |
ot = OT_BYTE; |
| 1231 |
else
|
| 1232 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1233 |
|
| 1234 |
switch(f) {
|
| 1235 |
case 0: /* OP Ev, Gv */ |
| 1236 |
modrm = ldub(s->pc++); |
| 1237 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1238 |
mod = (modrm >> 6) & 3; |
| 1239 |
rm = modrm & 7;
|
| 1240 |
if (mod != 3) { |
| 1241 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1242 |
gen_op_ld_T0_A0[ot](); |
| 1243 |
opreg = OR_TMP0; |
| 1244 |
} else {
|
| 1245 |
opreg = OR_EAX + rm; |
| 1246 |
} |
| 1247 |
gen_op(s, op, ot, opreg, reg); |
| 1248 |
if (mod != 3 && op != 7) { |
| 1249 |
gen_op_st_T0_A0[ot](); |
| 1250 |
} |
| 1251 |
break;
|
| 1252 |
case 1: /* OP Gv, Ev */ |
| 1253 |
modrm = ldub(s->pc++); |
| 1254 |
mod = (modrm >> 6) & 3; |
| 1255 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1256 |
rm = modrm & 7;
|
| 1257 |
if (mod != 3) { |
| 1258 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1259 |
gen_op_ld_T1_A0[ot](); |
| 1260 |
opreg = OR_TMP1; |
| 1261 |
} else {
|
| 1262 |
opreg = OR_EAX + rm; |
| 1263 |
} |
| 1264 |
gen_op(s, op, ot, reg, opreg); |
| 1265 |
break;
|
| 1266 |
case 2: /* OP A, Iv */ |
| 1267 |
val = insn_get(s, ot); |
| 1268 |
gen_opi(s, op, ot, OR_EAX, val); |
| 1269 |
break;
|
| 1270 |
} |
| 1271 |
} |
| 1272 |
break;
|
| 1273 |
|
| 1274 |
case 0x80: /* GRP1 */ |
| 1275 |
case 0x81: |
| 1276 |
case 0x83: |
| 1277 |
{
|
| 1278 |
int val;
|
| 1279 |
|
| 1280 |
if ((b & 1) == 0) |
| 1281 |
ot = OT_BYTE; |
| 1282 |
else
|
| 1283 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1284 |
|
| 1285 |
modrm = ldub(s->pc++); |
| 1286 |
mod = (modrm >> 6) & 3; |
| 1287 |
rm = modrm & 7;
|
| 1288 |
op = (modrm >> 3) & 7; |
| 1289 |
|
| 1290 |
if (mod != 3) { |
| 1291 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1292 |
gen_op_ld_T0_A0[ot](); |
| 1293 |
opreg = OR_TMP0; |
| 1294 |
} else {
|
| 1295 |
opreg = rm + OR_EAX; |
| 1296 |
} |
| 1297 |
|
| 1298 |
switch(b) {
|
| 1299 |
default:
|
| 1300 |
case 0x80: |
| 1301 |
case 0x81: |
| 1302 |
val = insn_get(s, ot); |
| 1303 |
break;
|
| 1304 |
case 0x83: |
| 1305 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 1306 |
break;
|
| 1307 |
} |
| 1308 |
|
| 1309 |
gen_opi(s, op, ot, opreg, val); |
| 1310 |
if (op != 7 && mod != 3) { |
| 1311 |
gen_op_st_T0_A0[ot](); |
| 1312 |
} |
| 1313 |
} |
| 1314 |
break;
|
| 1315 |
|
| 1316 |
/**************************/
|
| 1317 |
/* inc, dec, and other misc arith */
|
| 1318 |
case 0x40 ... 0x47: /* inc Gv */ |
| 1319 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1320 |
gen_inc(s, ot, OR_EAX + (b & 7), 1); |
| 1321 |
break;
|
| 1322 |
case 0x48 ... 0x4f: /* dec Gv */ |
| 1323 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1324 |
gen_inc(s, ot, OR_EAX + (b & 7), -1); |
| 1325 |
break;
|
| 1326 |
case 0xf6: /* GRP3 */ |
| 1327 |
case 0xf7: |
| 1328 |
if ((b & 1) == 0) |
| 1329 |
ot = OT_BYTE; |
| 1330 |
else
|
| 1331 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1332 |
|
| 1333 |
modrm = ldub(s->pc++); |
| 1334 |
mod = (modrm >> 6) & 3; |
| 1335 |
rm = modrm & 7;
|
| 1336 |
op = (modrm >> 3) & 7; |
| 1337 |
if (mod != 3) { |
| 1338 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1339 |
gen_op_ld_T0_A0[ot](); |
| 1340 |
} else {
|
| 1341 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1342 |
} |
| 1343 |
|
| 1344 |
switch(op) {
|
| 1345 |
case 0: /* test */ |
| 1346 |
val = insn_get(s, ot); |
| 1347 |
gen_op_movl_T1_im(val); |
| 1348 |
gen_op_testl_T0_T1_cc(); |
| 1349 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1350 |
break;
|
| 1351 |
case 2: /* not */ |
| 1352 |
gen_op_notl_T0(); |
| 1353 |
if (mod != 3) { |
| 1354 |
gen_op_st_T0_A0[ot](); |
| 1355 |
} else {
|
| 1356 |
gen_op_mov_reg_T0[ot][rm](); |
| 1357 |
} |
| 1358 |
break;
|
| 1359 |
case 3: /* neg */ |
| 1360 |
gen_op_negl_T0_cc(); |
| 1361 |
if (mod != 3) { |
| 1362 |
gen_op_st_T0_A0[ot](); |
| 1363 |
} else {
|
| 1364 |
gen_op_mov_reg_T0[ot][rm](); |
| 1365 |
} |
| 1366 |
s->cc_op = CC_OP_SUBB + ot; |
| 1367 |
break;
|
| 1368 |
case 4: /* mul */ |
| 1369 |
switch(ot) {
|
| 1370 |
case OT_BYTE:
|
| 1371 |
gen_op_mulb_AL_T0(); |
| 1372 |
break;
|
| 1373 |
case OT_WORD:
|
| 1374 |
gen_op_mulw_AX_T0(); |
| 1375 |
break;
|
| 1376 |
default:
|
| 1377 |
case OT_LONG:
|
| 1378 |
gen_op_mull_EAX_T0(); |
| 1379 |
break;
|
| 1380 |
} |
| 1381 |
s->cc_op = CC_OP_MUL; |
| 1382 |
break;
|
| 1383 |
case 5: /* imul */ |
| 1384 |
switch(ot) {
|
| 1385 |
case OT_BYTE:
|
| 1386 |
gen_op_imulb_AL_T0(); |
| 1387 |
break;
|
| 1388 |
case OT_WORD:
|
| 1389 |
gen_op_imulw_AX_T0(); |
| 1390 |
break;
|
| 1391 |
default:
|
| 1392 |
case OT_LONG:
|
| 1393 |
gen_op_imull_EAX_T0(); |
| 1394 |
break;
|
| 1395 |
} |
| 1396 |
s->cc_op = CC_OP_MUL; |
| 1397 |
break;
|
| 1398 |
case 6: /* div */ |
| 1399 |
switch(ot) {
|
| 1400 |
case OT_BYTE:
|
| 1401 |
gen_op_divb_AL_T0(); |
| 1402 |
break;
|
| 1403 |
case OT_WORD:
|
| 1404 |
gen_op_divw_AX_T0(); |
| 1405 |
break;
|
| 1406 |
default:
|
| 1407 |
case OT_LONG:
|
| 1408 |
gen_op_divl_EAX_T0(); |
| 1409 |
break;
|
| 1410 |
} |
| 1411 |
break;
|
| 1412 |
case 7: /* idiv */ |
| 1413 |
switch(ot) {
|
| 1414 |
case OT_BYTE:
|
| 1415 |
gen_op_idivb_AL_T0(); |
| 1416 |
break;
|
| 1417 |
case OT_WORD:
|
| 1418 |
gen_op_idivw_AX_T0(); |
| 1419 |
break;
|
| 1420 |
default:
|
| 1421 |
case OT_LONG:
|
| 1422 |
gen_op_idivl_EAX_T0(); |
| 1423 |
break;
|
| 1424 |
} |
| 1425 |
break;
|
| 1426 |
default:
|
| 1427 |
goto illegal_op;
|
| 1428 |
} |
| 1429 |
break;
|
| 1430 |
|
| 1431 |
case 0xfe: /* GRP4 */ |
| 1432 |
case 0xff: /* GRP5 */ |
| 1433 |
if ((b & 1) == 0) |
| 1434 |
ot = OT_BYTE; |
| 1435 |
else
|
| 1436 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1437 |
|
| 1438 |
modrm = ldub(s->pc++); |
| 1439 |
mod = (modrm >> 6) & 3; |
| 1440 |
rm = modrm & 7;
|
| 1441 |
op = (modrm >> 3) & 7; |
| 1442 |
if (op >= 2 && b == 0xfe) { |
| 1443 |
goto illegal_op;
|
| 1444 |
} |
| 1445 |
if (mod != 3) { |
| 1446 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1447 |
gen_op_ld_T0_A0[ot](); |
| 1448 |
} else {
|
| 1449 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1450 |
} |
| 1451 |
|
| 1452 |
switch(op) {
|
| 1453 |
case 0: /* inc Ev */ |
| 1454 |
gen_inc(s, ot, OR_TMP0, 1);
|
| 1455 |
if (mod != 3) |
| 1456 |
gen_op_st_T0_A0[ot](); |
| 1457 |
else
|
| 1458 |
gen_op_mov_reg_T0[ot][rm](); |
| 1459 |
break;
|
| 1460 |
case 1: /* dec Ev */ |
| 1461 |
gen_inc(s, ot, OR_TMP0, -1);
|
| 1462 |
if (mod != 3) |
| 1463 |
gen_op_st_T0_A0[ot](); |
| 1464 |
else
|
| 1465 |
gen_op_mov_reg_T0[ot][rm](); |
| 1466 |
break;
|
| 1467 |
case 2: /* call Ev */ |
| 1468 |
gen_op_movl_T1_im((long)s->pc);
|
| 1469 |
gen_op_pushl_T1(); |
| 1470 |
gen_op_jmp_T0(); |
| 1471 |
s->is_jmp = 1;
|
| 1472 |
break;
|
| 1473 |
case 4: /* jmp Ev */ |
| 1474 |
gen_op_jmp_T0(); |
| 1475 |
s->is_jmp = 1;
|
| 1476 |
break;
|
| 1477 |
case 6: /* push Ev */ |
| 1478 |
gen_op_pushl_T0(); |
| 1479 |
break;
|
| 1480 |
default:
|
| 1481 |
goto illegal_op;
|
| 1482 |
} |
| 1483 |
break;
|
| 1484 |
|
| 1485 |
case 0x84: /* test Ev, Gv */ |
| 1486 |
case 0x85: |
| 1487 |
if ((b & 1) == 0) |
| 1488 |
ot = OT_BYTE; |
| 1489 |
else
|
| 1490 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1491 |
|
| 1492 |
modrm = ldub(s->pc++); |
| 1493 |
mod = (modrm >> 6) & 3; |
| 1494 |
rm = modrm & 7;
|
| 1495 |
reg = (modrm >> 3) & 7; |
| 1496 |
|
| 1497 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1498 |
gen_op_mov_TN_reg[ot][1][reg + OR_EAX]();
|
| 1499 |
gen_op_testl_T0_T1_cc(); |
| 1500 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1501 |
break;
|
| 1502 |
|
| 1503 |
case 0xa8: /* test eAX, Iv */ |
| 1504 |
case 0xa9: |
| 1505 |
if ((b & 1) == 0) |
| 1506 |
ot = OT_BYTE; |
| 1507 |
else
|
| 1508 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1509 |
val = insn_get(s, ot); |
| 1510 |
|
| 1511 |
gen_op_mov_TN_reg[ot][0][OR_EAX]();
|
| 1512 |
gen_op_movl_T1_im(val); |
| 1513 |
gen_op_testl_T0_T1_cc(); |
| 1514 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1515 |
break;
|
| 1516 |
|
| 1517 |
case 0x98: /* CWDE/CBW */ |
| 1518 |
if (dflag)
|
| 1519 |
gen_op_movswl_EAX_AX(); |
| 1520 |
else
|
| 1521 |
gen_op_movsbw_AX_AL(); |
| 1522 |
break;
|
| 1523 |
case 0x99: /* CDQ/CWD */ |
| 1524 |
if (dflag)
|
| 1525 |
gen_op_movslq_EDX_EAX(); |
| 1526 |
else
|
| 1527 |
gen_op_movswl_DX_AX(); |
| 1528 |
break;
|
| 1529 |
case 0x1af: /* imul Gv, Ev */ |
| 1530 |
case 0x69: /* imul Gv, Ev, I */ |
| 1531 |
case 0x6b: |
| 1532 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1533 |
modrm = ldub(s->pc++); |
| 1534 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1535 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1536 |
if (b == 0x69) { |
| 1537 |
val = insn_get(s, ot); |
| 1538 |
gen_op_movl_T1_im(val); |
| 1539 |
} else if (b == 0x6b) { |
| 1540 |
val = insn_get(s, OT_BYTE); |
| 1541 |
gen_op_movl_T1_im(val); |
| 1542 |
} else {
|
| 1543 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 1544 |
} |
| 1545 |
|
| 1546 |
if (ot == OT_LONG) {
|
| 1547 |
gen_op_imull_T0_T1(); |
| 1548 |
} else {
|
| 1549 |
gen_op_imulw_T0_T1(); |
| 1550 |
} |
| 1551 |
gen_op_mov_reg_T0[ot][reg](); |
| 1552 |
s->cc_op = CC_OP_MUL; |
| 1553 |
break;
|
| 1554 |
case 0x1c0: |
| 1555 |
case 0x1c1: /* xadd Ev, Gv */ |
| 1556 |
if ((b & 1) == 0) |
| 1557 |
ot = OT_BYTE; |
| 1558 |
else
|
| 1559 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1560 |
modrm = ldub(s->pc++); |
| 1561 |
reg = (modrm >> 3) & 7; |
| 1562 |
mod = (modrm >> 6) & 3; |
| 1563 |
if (mod == 3) { |
| 1564 |
rm = modrm & 7;
|
| 1565 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1566 |
gen_op_mov_TN_reg[ot][1][rm]();
|
| 1567 |
gen_op_addl_T0_T1_cc(); |
| 1568 |
gen_op_mov_reg_T0[ot][rm](); |
| 1569 |
gen_op_mov_reg_T1[ot][reg](); |
| 1570 |
} else {
|
| 1571 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1572 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1573 |
gen_op_ld_T1_A0[ot](); |
| 1574 |
gen_op_addl_T0_T1_cc(); |
| 1575 |
gen_op_st_T0_A0[ot](); |
| 1576 |
gen_op_mov_reg_T1[ot][reg](); |
| 1577 |
} |
| 1578 |
s->cc_op = CC_OP_ADDB + ot; |
| 1579 |
break;
|
| 1580 |
case 0x1b0: |
| 1581 |
case 0x1b1: /* cmpxchg Ev, Gv */ |
| 1582 |
if ((b & 1) == 0) |
| 1583 |
ot = OT_BYTE; |
| 1584 |
else
|
| 1585 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1586 |
modrm = ldub(s->pc++); |
| 1587 |
reg = (modrm >> 3) & 7; |
| 1588 |
mod = (modrm >> 6) & 3; |
| 1589 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 1590 |
if (mod == 3) { |
| 1591 |
rm = modrm & 7;
|
| 1592 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1593 |
gen_op_cmpxchg_T0_T1_EAX_cc[ot](); |
| 1594 |
gen_op_mov_reg_T0[ot][rm](); |
| 1595 |
} else {
|
| 1596 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1597 |
gen_op_ld_T0_A0[ot](); |
| 1598 |
gen_op_cmpxchg_T0_T1_EAX_cc[ot](); |
| 1599 |
gen_op_st_T0_A0[ot](); |
| 1600 |
} |
| 1601 |
s->cc_op = CC_OP_SUBB + ot; |
| 1602 |
break;
|
| 1603 |
|
| 1604 |
/**************************/
|
| 1605 |
/* push/pop */
|
| 1606 |
case 0x50 ... 0x57: /* push */ |
| 1607 |
gen_op_mov_TN_reg[OT_LONG][0][b & 7](); |
| 1608 |
gen_op_pushl_T0(); |
| 1609 |
break;
|
| 1610 |
case 0x58 ... 0x5f: /* pop */ |
| 1611 |
gen_op_popl_T0(); |
| 1612 |
gen_op_mov_reg_T0[OT_LONG][b & 7]();
|
| 1613 |
break;
|
| 1614 |
case 0x60: /* pusha */ |
| 1615 |
if (s->dflag)
|
| 1616 |
gen_op_pushal(); |
| 1617 |
else
|
| 1618 |
gen_op_pushaw(); |
| 1619 |
break;
|
| 1620 |
case 0x61: /* popa */ |
| 1621 |
if (s->dflag)
|
| 1622 |
gen_op_popal(); |
| 1623 |
else
|
| 1624 |
gen_op_popaw(); |
| 1625 |
break;
|
| 1626 |
case 0x68: /* push Iv */ |
| 1627 |
case 0x6a: |
| 1628 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1629 |
if (b == 0x68) |
| 1630 |
val = insn_get(s, ot); |
| 1631 |
else
|
| 1632 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 1633 |
gen_op_movl_T0_im(val); |
| 1634 |
gen_op_pushl_T0(); |
| 1635 |
break;
|
| 1636 |
case 0x8f: /* pop Ev */ |
| 1637 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1638 |
modrm = ldub(s->pc++); |
| 1639 |
gen_op_popl_T0(); |
| 1640 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
| 1641 |
break;
|
| 1642 |
case 0xc8: /* enter */ |
| 1643 |
{
|
| 1644 |
int level;
|
| 1645 |
val = lduw(s->pc); |
| 1646 |
s->pc += 2;
|
| 1647 |
level = ldub(s->pc++); |
| 1648 |
level &= 0x1f;
|
| 1649 |
gen_op_enterl(val, level); |
| 1650 |
} |
| 1651 |
break;
|
| 1652 |
case 0xc9: /* leave */ |
| 1653 |
gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
|
| 1654 |
gen_op_mov_reg_T0[OT_LONG][R_ESP](); |
| 1655 |
gen_op_popl_T0(); |
| 1656 |
gen_op_mov_reg_T0[OT_LONG][R_EBP](); |
| 1657 |
break;
|
| 1658 |
case 0x06: /* push es */ |
| 1659 |
case 0x0e: /* push cs */ |
| 1660 |
case 0x16: /* push ss */ |
| 1661 |
case 0x1e: /* push ds */ |
| 1662 |
gen_op_movl_T0_seg(b >> 3);
|
| 1663 |
gen_op_pushl_T0(); |
| 1664 |
break;
|
| 1665 |
case 0x1a0: /* push fs */ |
| 1666 |
case 0x1a8: /* push gs */ |
| 1667 |
gen_op_movl_T0_seg(((b >> 3) & 7) + R_FS); |
| 1668 |
gen_op_pushl_T0(); |
| 1669 |
break;
|
| 1670 |
case 0x07: /* pop es */ |
| 1671 |
case 0x17: /* pop ss */ |
| 1672 |
case 0x1f: /* pop ds */ |
| 1673 |
gen_op_popl_T0(); |
| 1674 |
gen_movl_seg_T0(s, b >> 3);
|
| 1675 |
break;
|
| 1676 |
case 0x1a1: /* pop fs */ |
| 1677 |
case 0x1a9: /* pop gs */ |
| 1678 |
gen_op_popl_T0(); |
| 1679 |
gen_movl_seg_T0(s, ((b >> 3) & 7) + R_FS); |
| 1680 |
break;
|
| 1681 |
|
| 1682 |
/**************************/
|
| 1683 |
/* mov */
|
| 1684 |
case 0x88: |
| 1685 |
case 0x89: /* mov Gv, Ev */ |
| 1686 |
if ((b & 1) == 0) |
| 1687 |
ot = OT_BYTE; |
| 1688 |
else
|
| 1689 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1690 |
modrm = ldub(s->pc++); |
| 1691 |
reg = (modrm >> 3) & 7; |
| 1692 |
|
| 1693 |
/* generate a generic store */
|
| 1694 |
gen_ldst_modrm(s, modrm, ot, OR_EAX + reg, 1);
|
| 1695 |
break;
|
| 1696 |
case 0xc6: |
| 1697 |
case 0xc7: /* mov Ev, Iv */ |
| 1698 |
if ((b & 1) == 0) |
| 1699 |
ot = OT_BYTE; |
| 1700 |
else
|
| 1701 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1702 |
modrm = ldub(s->pc++); |
| 1703 |
mod = (modrm >> 6) & 3; |
| 1704 |
if (mod != 3) |
| 1705 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1706 |
val = insn_get(s, ot); |
| 1707 |
gen_op_movl_T0_im(val); |
| 1708 |
if (mod != 3) |
| 1709 |
gen_op_st_T0_A0[ot](); |
| 1710 |
else
|
| 1711 |
gen_op_mov_reg_T0[ot][modrm & 7]();
|
| 1712 |
break;
|
| 1713 |
case 0x8a: |
| 1714 |
case 0x8b: /* mov Ev, Gv */ |
| 1715 |
if ((b & 1) == 0) |
| 1716 |
ot = OT_BYTE; |
| 1717 |
else
|
| 1718 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1719 |
modrm = ldub(s->pc++); |
| 1720 |
reg = (modrm >> 3) & 7; |
| 1721 |
|
| 1722 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1723 |
gen_op_mov_reg_T0[ot][reg](); |
| 1724 |
break;
|
| 1725 |
case 0x8e: /* mov seg, Gv */ |
| 1726 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1727 |
modrm = ldub(s->pc++); |
| 1728 |
reg = (modrm >> 3) & 7; |
| 1729 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1730 |
if (reg >= 6) |
| 1731 |
goto illegal_op;
|
| 1732 |
gen_movl_seg_T0(s, reg); |
| 1733 |
break;
|
| 1734 |
case 0x8c: /* mov Gv, seg */ |
| 1735 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1736 |
modrm = ldub(s->pc++); |
| 1737 |
reg = (modrm >> 3) & 7; |
| 1738 |
if (reg >= 6) |
| 1739 |
goto illegal_op;
|
| 1740 |
gen_op_movl_T0_seg(reg); |
| 1741 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
| 1742 |
break;
|
| 1743 |
|
| 1744 |
case 0x1b6: /* movzbS Gv, Eb */ |
| 1745 |
case 0x1b7: /* movzwS Gv, Eb */ |
| 1746 |
case 0x1be: /* movsbS Gv, Eb */ |
| 1747 |
case 0x1bf: /* movswS Gv, Eb */ |
| 1748 |
{
|
| 1749 |
int d_ot;
|
| 1750 |
/* d_ot is the size of destination */
|
| 1751 |
d_ot = dflag + OT_WORD; |
| 1752 |
/* ot is the size of source */
|
| 1753 |
ot = (b & 1) + OT_BYTE;
|
| 1754 |
modrm = ldub(s->pc++); |
| 1755 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1756 |
mod = (modrm >> 6) & 3; |
| 1757 |
rm = modrm & 7;
|
| 1758 |
|
| 1759 |
if (mod == 3) { |
| 1760 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1761 |
switch(ot | (b & 8)) { |
| 1762 |
case OT_BYTE:
|
| 1763 |
gen_op_movzbl_T0_T0(); |
| 1764 |
break;
|
| 1765 |
case OT_BYTE | 8: |
| 1766 |
gen_op_movsbl_T0_T0(); |
| 1767 |
break;
|
| 1768 |
case OT_WORD:
|
| 1769 |
gen_op_movzwl_T0_T0(); |
| 1770 |
break;
|
| 1771 |
default:
|
| 1772 |
case OT_WORD | 8: |
| 1773 |
gen_op_movswl_T0_T0(); |
| 1774 |
break;
|
| 1775 |
} |
| 1776 |
gen_op_mov_reg_T0[d_ot][reg](); |
| 1777 |
} else {
|
| 1778 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1779 |
if (b & 8) { |
| 1780 |
gen_op_lds_T0_A0[ot](); |
| 1781 |
} else {
|
| 1782 |
gen_op_ldu_T0_A0[ot](); |
| 1783 |
} |
| 1784 |
gen_op_mov_reg_T0[d_ot][reg](); |
| 1785 |
} |
| 1786 |
} |
| 1787 |
break;
|
| 1788 |
|
| 1789 |
case 0x8d: /* lea */ |
| 1790 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1791 |
modrm = ldub(s->pc++); |
| 1792 |
reg = (modrm >> 3) & 7; |
| 1793 |
/* we must ensure that no segment is added */
|
| 1794 |
s->prefix &= ~(PREFIX_CS | PREFIX_SS | PREFIX_DS | |
| 1795 |
PREFIX_ES | PREFIX_FS | PREFIX_GS); |
| 1796 |
val = s->addseg; |
| 1797 |
s->addseg = 0;
|
| 1798 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1799 |
s->addseg = val; |
| 1800 |
gen_op_mov_reg_A0[ot - OT_WORD][reg](); |
| 1801 |
break;
|
| 1802 |
|
| 1803 |
case 0xa0: /* mov EAX, Ov */ |
| 1804 |
case 0xa1: |
| 1805 |
case 0xa2: /* mov Ov, EAX */ |
| 1806 |
case 0xa3: |
| 1807 |
if ((b & 1) == 0) |
| 1808 |
ot = OT_BYTE; |
| 1809 |
else
|
| 1810 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1811 |
if (s->aflag)
|
| 1812 |
offset_addr = insn_get(s, OT_LONG); |
| 1813 |
else
|
| 1814 |
offset_addr = insn_get(s, OT_WORD); |
| 1815 |
gen_op_movl_A0_im(offset_addr); |
| 1816 |
/* handle override */
|
| 1817 |
/* XXX: factorize that */
|
| 1818 |
{
|
| 1819 |
int override, must_add_seg;
|
| 1820 |
override = R_DS; |
| 1821 |
must_add_seg = s->addseg; |
| 1822 |
if (s->prefix & (PREFIX_CS | PREFIX_SS | PREFIX_DS |
|
| 1823 |
PREFIX_ES | PREFIX_FS | PREFIX_GS)) {
|
| 1824 |
if (s->prefix & PREFIX_ES)
|
| 1825 |
override = R_ES; |
| 1826 |
else if (s->prefix & PREFIX_CS) |
| 1827 |
override = R_CS; |
| 1828 |
else if (s->prefix & PREFIX_SS) |
| 1829 |
override = R_SS; |
| 1830 |
else if (s->prefix & PREFIX_DS) |
| 1831 |
override = R_DS; |
| 1832 |
else if (s->prefix & PREFIX_FS) |
| 1833 |
override = R_FS; |
| 1834 |
else
|
| 1835 |
override = R_GS; |
| 1836 |
must_add_seg = 1;
|
| 1837 |
} |
| 1838 |
if (must_add_seg) {
|
| 1839 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 1840 |
} |
| 1841 |
} |
| 1842 |
if ((b & 2) == 0) { |
| 1843 |
gen_op_ld_T0_A0[ot](); |
| 1844 |
gen_op_mov_reg_T0[ot][R_EAX](); |
| 1845 |
} else {
|
| 1846 |
gen_op_mov_TN_reg[ot][0][R_EAX]();
|
| 1847 |
gen_op_st_T0_A0[ot](); |
| 1848 |
} |
| 1849 |
break;
|
| 1850 |
|
| 1851 |
case 0xb0 ... 0xb7: /* mov R, Ib */ |
| 1852 |
val = insn_get(s, OT_BYTE); |
| 1853 |
gen_op_movl_T0_im(val); |
| 1854 |
gen_op_mov_reg_T0[OT_BYTE][b & 7]();
|
| 1855 |
break;
|
| 1856 |
case 0xb8 ... 0xbf: /* mov R, Iv */ |
| 1857 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1858 |
val = insn_get(s, ot); |
| 1859 |
reg = OR_EAX + (b & 7);
|
| 1860 |
gen_op_movl_T0_im(val); |
| 1861 |
gen_op_mov_reg_T0[ot][reg](); |
| 1862 |
break;
|
| 1863 |
|
| 1864 |
case 0x91 ... 0x97: /* xchg R, EAX */ |
| 1865 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1866 |
reg = b & 7;
|
| 1867 |
rm = R_EAX; |
| 1868 |
goto do_xchg_reg;
|
| 1869 |
case 0x86: |
| 1870 |
case 0x87: /* xchg Ev, Gv */ |
| 1871 |
if ((b & 1) == 0) |
| 1872 |
ot = OT_BYTE; |
| 1873 |
else
|
| 1874 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1875 |
modrm = ldub(s->pc++); |
| 1876 |
reg = (modrm >> 3) & 7; |
| 1877 |
mod = (modrm >> 6) & 3; |
| 1878 |
if (mod == 3) { |
| 1879 |
rm = modrm & 7;
|
| 1880 |
do_xchg_reg:
|
| 1881 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1882 |
gen_op_mov_TN_reg[ot][1][rm]();
|
| 1883 |
gen_op_mov_reg_T0[ot][rm](); |
| 1884 |
gen_op_mov_reg_T1[ot][reg](); |
| 1885 |
} else {
|
| 1886 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1887 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1888 |
gen_op_ld_T1_A0[ot](); |
| 1889 |
gen_op_st_T0_A0[ot](); |
| 1890 |
gen_op_mov_reg_T1[ot][reg](); |
| 1891 |
} |
| 1892 |
break;
|
| 1893 |
case 0xc4: /* les Gv */ |
| 1894 |
op = R_ES; |
| 1895 |
goto do_lxx;
|
| 1896 |
case 0xc5: /* lds Gv */ |
| 1897 |
op = R_DS; |
| 1898 |
goto do_lxx;
|
| 1899 |
case 0x1b2: /* lss Gv */ |
| 1900 |
op = R_SS; |
| 1901 |
goto do_lxx;
|
| 1902 |
case 0x1b4: /* lfs Gv */ |
| 1903 |
op = R_FS; |
| 1904 |
goto do_lxx;
|
| 1905 |
case 0x1b5: /* lgs Gv */ |
| 1906 |
op = R_GS; |
| 1907 |
do_lxx:
|
| 1908 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1909 |
modrm = ldub(s->pc++); |
| 1910 |
reg = (modrm >> 3) & 7; |
| 1911 |
mod = (modrm >> 6) & 3; |
| 1912 |
if (mod == 3) |
| 1913 |
goto illegal_op;
|
| 1914 |
gen_op_ld_T1_A0[ot](); |
| 1915 |
op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
| 1916 |
/* load the segment first to handle exceptions properly */
|
| 1917 |
gen_op_lduw_T0_A0(); |
| 1918 |
gen_movl_seg_T0(s, op); |
| 1919 |
/* then put the data */
|
| 1920 |
gen_op_mov_reg_T1[ot][reg](); |
| 1921 |
break;
|
| 1922 |
|
| 1923 |
/************************/
|
| 1924 |
/* shifts */
|
| 1925 |
case 0xc0: |
| 1926 |
case 0xc1: |
| 1927 |
/* shift Ev,Ib */
|
| 1928 |
shift = 2;
|
| 1929 |
grp2:
|
| 1930 |
{
|
| 1931 |
if ((b & 1) == 0) |
| 1932 |
ot = OT_BYTE; |
| 1933 |
else
|
| 1934 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1935 |
|
| 1936 |
modrm = ldub(s->pc++); |
| 1937 |
mod = (modrm >> 6) & 3; |
| 1938 |
rm = modrm & 7;
|
| 1939 |
op = (modrm >> 3) & 7; |
| 1940 |
|
| 1941 |
if (mod != 3) { |
| 1942 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1943 |
gen_op_ld_T0_A0[ot](); |
| 1944 |
opreg = OR_TMP0; |
| 1945 |
} else {
|
| 1946 |
opreg = rm + OR_EAX; |
| 1947 |
} |
| 1948 |
|
| 1949 |
/* simpler op */
|
| 1950 |
if (shift == 0) { |
| 1951 |
gen_shift(s, op, ot, opreg, OR_ECX); |
| 1952 |
} else {
|
| 1953 |
if (shift == 2) { |
| 1954 |
shift = ldub(s->pc++); |
| 1955 |
} |
| 1956 |
gen_shifti(s, op, ot, opreg, shift); |
| 1957 |
} |
| 1958 |
|
| 1959 |
if (mod != 3) { |
| 1960 |
gen_op_st_T0_A0[ot](); |
| 1961 |
} |
| 1962 |
} |
| 1963 |
break;
|
| 1964 |
case 0xd0: |
| 1965 |
case 0xd1: |
| 1966 |
/* shift Ev,1 */
|
| 1967 |
shift = 1;
|
| 1968 |
goto grp2;
|
| 1969 |
case 0xd2: |
| 1970 |
case 0xd3: |
| 1971 |
/* shift Ev,cl */
|
| 1972 |
shift = 0;
|
| 1973 |
goto grp2;
|
| 1974 |
|
| 1975 |
case 0x1a4: /* shld imm */ |
| 1976 |
op = 0;
|
| 1977 |
shift = 1;
|
| 1978 |
goto do_shiftd;
|
| 1979 |
case 0x1a5: /* shld cl */ |
| 1980 |
op = 0;
|
| 1981 |
shift = 0;
|
| 1982 |
goto do_shiftd;
|
| 1983 |
case 0x1ac: /* shrd imm */ |
| 1984 |
op = 1;
|
| 1985 |
shift = 1;
|
| 1986 |
goto do_shiftd;
|
| 1987 |
case 0x1ad: /* shrd cl */ |
| 1988 |
op = 1;
|
| 1989 |
shift = 0;
|
| 1990 |
do_shiftd:
|
| 1991 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1992 |
modrm = ldub(s->pc++); |
| 1993 |
mod = (modrm >> 6) & 3; |
| 1994 |
rm = modrm & 7;
|
| 1995 |
reg = (modrm >> 3) & 7; |
| 1996 |
|
| 1997 |
if (mod != 3) { |
| 1998 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1999 |
gen_op_ld_T0_A0[ot](); |
| 2000 |
} else {
|
| 2001 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 2002 |
} |
| 2003 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 2004 |
|
| 2005 |
if (shift) {
|
| 2006 |
val = ldub(s->pc++); |
| 2007 |
val &= 0x1f;
|
| 2008 |
if (val) {
|
| 2009 |
gen_op_shiftd_T0_T1_im_cc[ot - OT_WORD][op](val); |
| 2010 |
if (op == 0 && ot != OT_WORD) |
| 2011 |
s->cc_op = CC_OP_SHLB + ot; |
| 2012 |
else
|
| 2013 |
s->cc_op = CC_OP_SARB + ot; |
| 2014 |
} |
| 2015 |
} else {
|
| 2016 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2017 |
gen_op_set_cc_op(s->cc_op); |
| 2018 |
gen_op_shiftd_T0_T1_ECX_cc[ot - OT_WORD][op](); |
| 2019 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2020 |
} |
| 2021 |
if (mod != 3) { |
| 2022 |
gen_op_st_T0_A0[ot](); |
| 2023 |
} else {
|
| 2024 |
gen_op_mov_reg_T0[ot][rm](); |
| 2025 |
} |
| 2026 |
break;
|
| 2027 |
|
| 2028 |
/************************/
|
| 2029 |
/* floats */
|
| 2030 |
case 0xd8 ... 0xdf: |
| 2031 |
modrm = ldub(s->pc++); |
| 2032 |
mod = (modrm >> 6) & 3; |
| 2033 |
rm = modrm & 7;
|
| 2034 |
op = ((b & 7) << 3) | ((modrm >> 3) & 7); |
| 2035 |
|
| 2036 |
if (mod != 3) { |
| 2037 |
/* memory op */
|
| 2038 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2039 |
switch(op) {
|
| 2040 |
case 0x00 ... 0x07: /* fxxxs */ |
| 2041 |
case 0x10 ... 0x17: /* fixxxl */ |
| 2042 |
case 0x20 ... 0x27: /* fxxxl */ |
| 2043 |
case 0x30 ... 0x37: /* fixxx */ |
| 2044 |
{
|
| 2045 |
int op1;
|
| 2046 |
op1 = op & 7;
|
| 2047 |
|
| 2048 |
switch(op >> 4) { |
| 2049 |
case 0: |
| 2050 |
gen_op_flds_FT0_A0(); |
| 2051 |
break;
|
| 2052 |
case 1: |
| 2053 |
gen_op_fildl_FT0_A0(); |
| 2054 |
break;
|
| 2055 |
case 2: |
| 2056 |
gen_op_fldl_FT0_A0(); |
| 2057 |
break;
|
| 2058 |
case 3: |
| 2059 |
default:
|
| 2060 |
gen_op_fild_FT0_A0(); |
| 2061 |
break;
|
| 2062 |
} |
| 2063 |
|
| 2064 |
gen_op_fp_arith_ST0_FT0[op1](); |
| 2065 |
if (op1 == 3) { |
| 2066 |
/* fcomp needs pop */
|
| 2067 |
gen_op_fpop(); |
| 2068 |
} |
| 2069 |
} |
| 2070 |
break;
|
| 2071 |
case 0x08: /* flds */ |
| 2072 |
case 0x0a: /* fsts */ |
| 2073 |
case 0x0b: /* fstps */ |
| 2074 |
case 0x18: /* fildl */ |
| 2075 |
case 0x1a: /* fistl */ |
| 2076 |
case 0x1b: /* fistpl */ |
| 2077 |
case 0x28: /* fldl */ |
| 2078 |
case 0x2a: /* fstl */ |
| 2079 |
case 0x2b: /* fstpl */ |
| 2080 |
case 0x38: /* filds */ |
| 2081 |
case 0x3a: /* fists */ |
| 2082 |
case 0x3b: /* fistps */ |
| 2083 |
|
| 2084 |
switch(op & 7) { |
| 2085 |
case 0: |
| 2086 |
gen_op_fpush(); |
| 2087 |
switch(op >> 4) { |
| 2088 |
case 0: |
| 2089 |
gen_op_flds_ST0_A0(); |
| 2090 |
break;
|
| 2091 |
case 1: |
| 2092 |
gen_op_fildl_ST0_A0(); |
| 2093 |
break;
|
| 2094 |
case 2: |
| 2095 |
gen_op_fldl_ST0_A0(); |
| 2096 |
break;
|
| 2097 |
case 3: |
| 2098 |
default:
|
| 2099 |
gen_op_fild_ST0_A0(); |
| 2100 |
break;
|
| 2101 |
} |
| 2102 |
break;
|
| 2103 |
default:
|
| 2104 |
switch(op >> 4) { |
| 2105 |
case 0: |
| 2106 |
gen_op_fsts_ST0_A0(); |
| 2107 |
break;
|
| 2108 |
case 1: |
| 2109 |
gen_op_fistl_ST0_A0(); |
| 2110 |
break;
|
| 2111 |
case 2: |
| 2112 |
gen_op_fstl_ST0_A0(); |
| 2113 |
break;
|
| 2114 |
case 3: |
| 2115 |
default:
|
| 2116 |
gen_op_fist_ST0_A0(); |
| 2117 |
break;
|
| 2118 |
} |
| 2119 |
if ((op & 7) == 3) |
| 2120 |
gen_op_fpop(); |
| 2121 |
break;
|
| 2122 |
} |
| 2123 |
break;
|
| 2124 |
case 0x0d: /* fldcw mem */ |
| 2125 |
gen_op_fldcw_A0(); |
| 2126 |
break;
|
| 2127 |
case 0x0f: /* fnstcw mem */ |
| 2128 |
gen_op_fnstcw_A0(); |
| 2129 |
break;
|
| 2130 |
case 0x1d: /* fldt mem */ |
| 2131 |
gen_op_fpush(); |
| 2132 |
gen_op_fldt_ST0_A0(); |
| 2133 |
break;
|
| 2134 |
case 0x1f: /* fstpt mem */ |
| 2135 |
gen_op_fstt_ST0_A0(); |
| 2136 |
gen_op_fpop(); |
| 2137 |
break;
|
| 2138 |
case 0x2f: /* fnstsw mem */ |
| 2139 |
gen_op_fnstsw_A0(); |
| 2140 |
break;
|
| 2141 |
case 0x3c: /* fbld */ |
| 2142 |
gen_op_fpush(); |
| 2143 |
gen_op_fbld_ST0_A0(); |
| 2144 |
break;
|
| 2145 |
case 0x3e: /* fbstp */ |
| 2146 |
gen_op_fbst_ST0_A0(); |
| 2147 |
gen_op_fpop(); |
| 2148 |
break;
|
| 2149 |
case 0x3d: /* fildll */ |
| 2150 |
gen_op_fpush(); |
| 2151 |
gen_op_fildll_ST0_A0(); |
| 2152 |
break;
|
| 2153 |
case 0x3f: /* fistpll */ |
| 2154 |
gen_op_fistll_ST0_A0(); |
| 2155 |
gen_op_fpop(); |
| 2156 |
break;
|
| 2157 |
default:
|
| 2158 |
goto illegal_op;
|
| 2159 |
} |
| 2160 |
} else {
|
| 2161 |
/* register float ops */
|
| 2162 |
opreg = rm; |
| 2163 |
|
| 2164 |
switch(op) {
|
| 2165 |
case 0x08: /* fld sti */ |
| 2166 |
gen_op_fpush(); |
| 2167 |
gen_op_fmov_ST0_STN((opreg + 1) & 7); |
| 2168 |
break;
|
| 2169 |
case 0x09: /* fxchg sti */ |
| 2170 |
gen_op_fxchg_ST0_STN(opreg); |
| 2171 |
break;
|
| 2172 |
case 0x0a: /* grp d9/2 */ |
| 2173 |
switch(rm) {
|
| 2174 |
case 0: /* fnop */ |
| 2175 |
break;
|
| 2176 |
default:
|
| 2177 |
goto illegal_op;
|
| 2178 |
} |
| 2179 |
break;
|
| 2180 |
case 0x0c: /* grp d9/4 */ |
| 2181 |
switch(rm) {
|
| 2182 |
case 0: /* fchs */ |
| 2183 |
gen_op_fchs_ST0(); |
| 2184 |
break;
|
| 2185 |
case 1: /* fabs */ |
| 2186 |
gen_op_fabs_ST0(); |
| 2187 |
break;
|
| 2188 |
case 4: /* ftst */ |
| 2189 |
gen_op_fldz_FT0(); |
| 2190 |
gen_op_fcom_ST0_FT0(); |
| 2191 |
break;
|
| 2192 |
case 5: /* fxam */ |
| 2193 |
gen_op_fxam_ST0(); |
| 2194 |
break;
|
| 2195 |
default:
|
| 2196 |
goto illegal_op;
|
| 2197 |
} |
| 2198 |
break;
|
| 2199 |
case 0x0d: /* grp d9/5 */ |
| 2200 |
{
|
| 2201 |
switch(rm) {
|
| 2202 |
case 0: |
| 2203 |
gen_op_fpush(); |
| 2204 |
gen_op_fld1_ST0(); |
| 2205 |
break;
|
| 2206 |
case 1: |
| 2207 |
gen_op_fpush(); |
| 2208 |
gen_op_fldl2t_ST0(); |
| 2209 |
break;
|
| 2210 |
case 2: |
| 2211 |
gen_op_fpush(); |
| 2212 |
gen_op_fldl2e_ST0(); |
| 2213 |
break;
|
| 2214 |
case 3: |
| 2215 |
gen_op_fpush(); |
| 2216 |
gen_op_fldpi_ST0(); |
| 2217 |
break;
|
| 2218 |
case 4: |
| 2219 |
gen_op_fpush(); |
| 2220 |
gen_op_fldlg2_ST0(); |
| 2221 |
break;
|
| 2222 |
case 5: |
| 2223 |
gen_op_fpush(); |
| 2224 |
gen_op_fldln2_ST0(); |
| 2225 |
break;
|
| 2226 |
case 6: |
| 2227 |
gen_op_fpush(); |
| 2228 |
gen_op_fldz_ST0(); |
| 2229 |
break;
|
| 2230 |
default:
|
| 2231 |
goto illegal_op;
|
| 2232 |
} |
| 2233 |
} |
| 2234 |
break;
|
| 2235 |
case 0x0e: /* grp d9/6 */ |
| 2236 |
switch(rm) {
|
| 2237 |
case 0: /* f2xm1 */ |
| 2238 |
gen_op_f2xm1(); |
| 2239 |
break;
|
| 2240 |
case 1: /* fyl2x */ |
| 2241 |
gen_op_fyl2x(); |
| 2242 |
break;
|
| 2243 |
case 2: /* fptan */ |
| 2244 |
gen_op_fptan(); |
| 2245 |
break;
|
| 2246 |
case 3: /* fpatan */ |
| 2247 |
gen_op_fpatan(); |
| 2248 |
break;
|
| 2249 |
case 4: /* fxtract */ |
| 2250 |
gen_op_fxtract(); |
| 2251 |
break;
|
| 2252 |
case 5: /* fprem1 */ |
| 2253 |
gen_op_fprem1(); |
| 2254 |
break;
|
| 2255 |
case 6: /* fdecstp */ |
| 2256 |
gen_op_fdecstp(); |
| 2257 |
break;
|
| 2258 |
default:
|
| 2259 |
case 7: /* fincstp */ |
| 2260 |
gen_op_fincstp(); |
| 2261 |
break;
|
| 2262 |
} |
| 2263 |
break;
|
| 2264 |
case 0x0f: /* grp d9/7 */ |
| 2265 |
switch(rm) {
|
| 2266 |
case 0: /* fprem */ |
| 2267 |
gen_op_fprem(); |
| 2268 |
break;
|
| 2269 |
case 1: /* fyl2xp1 */ |
| 2270 |
gen_op_fyl2xp1(); |
| 2271 |
break;
|
| 2272 |
case 2: /* fsqrt */ |
| 2273 |
gen_op_fsqrt(); |
| 2274 |
break;
|
| 2275 |
case 3: /* fsincos */ |
| 2276 |
gen_op_fsincos(); |
| 2277 |
break;
|
| 2278 |
case 5: /* fscale */ |
| 2279 |
gen_op_fscale(); |
| 2280 |
break;
|
| 2281 |
case 4: /* frndint */ |
| 2282 |
gen_op_frndint(); |
| 2283 |
break;
|
| 2284 |
case 6: /* fsin */ |
| 2285 |
gen_op_fsin(); |
| 2286 |
break;
|
| 2287 |
default:
|
| 2288 |
case 7: /* fcos */ |
| 2289 |
gen_op_fcos(); |
| 2290 |
break;
|
| 2291 |
} |
| 2292 |
break;
|
| 2293 |
case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */ |
| 2294 |
case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */ |
| 2295 |
case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */ |
| 2296 |
{
|
| 2297 |
int op1;
|
| 2298 |
|
| 2299 |
op1 = op & 7;
|
| 2300 |
if (op >= 0x20) { |
| 2301 |
gen_op_fp_arith_STN_ST0[op1](opreg); |
| 2302 |
if (op >= 0x30) |
| 2303 |
gen_op_fpop(); |
| 2304 |
} else {
|
| 2305 |
gen_op_fmov_FT0_STN(opreg); |
| 2306 |
gen_op_fp_arith_ST0_FT0[op1](); |
| 2307 |
} |
| 2308 |
} |
| 2309 |
break;
|
| 2310 |
case 0x02: /* fcom */ |
| 2311 |
gen_op_fmov_FT0_STN(opreg); |
| 2312 |
gen_op_fcom_ST0_FT0(); |
| 2313 |
break;
|
| 2314 |
case 0x03: /* fcomp */ |
| 2315 |
gen_op_fmov_FT0_STN(opreg); |
| 2316 |
gen_op_fcom_ST0_FT0(); |
| 2317 |
gen_op_fpop(); |
| 2318 |
break;
|
| 2319 |
case 0x15: /* da/5 */ |
| 2320 |
switch(rm) {
|
| 2321 |
case 1: /* fucompp */ |
| 2322 |
gen_op_fmov_FT0_STN(1);
|
| 2323 |
gen_op_fucom_ST0_FT0(); |
| 2324 |
gen_op_fpop(); |
| 2325 |
gen_op_fpop(); |
| 2326 |
break;
|
| 2327 |
default:
|
| 2328 |
goto illegal_op;
|
| 2329 |
} |
| 2330 |
break;
|
| 2331 |
case 0x1c: |
| 2332 |
switch(rm) {
|
| 2333 |
case 2: /* fclex */ |
| 2334 |
gen_op_fclex(); |
| 2335 |
break;
|
| 2336 |
case 3: /* fninit */ |
| 2337 |
gen_op_fninit(); |
| 2338 |
break;
|
| 2339 |
default:
|
| 2340 |
goto illegal_op;
|
| 2341 |
} |
| 2342 |
break;
|
| 2343 |
case 0x2a: /* fst sti */ |
| 2344 |
gen_op_fmov_STN_ST0(opreg); |
| 2345 |
break;
|
| 2346 |
case 0x2b: /* fstp sti */ |
| 2347 |
gen_op_fmov_STN_ST0(opreg); |
| 2348 |
gen_op_fpop(); |
| 2349 |
break;
|
| 2350 |
case 0x2c: /* fucom st(i) */ |
| 2351 |
gen_op_fmov_FT0_STN(opreg); |
| 2352 |
gen_op_fucom_ST0_FT0(); |
| 2353 |
break;
|
| 2354 |
case 0x2d: /* fucomp st(i) */ |
| 2355 |
gen_op_fmov_FT0_STN(opreg); |
| 2356 |
gen_op_fucom_ST0_FT0(); |
| 2357 |
gen_op_fpop(); |
| 2358 |
break;
|
| 2359 |
case 0x33: /* de/3 */ |
| 2360 |
switch(rm) {
|
| 2361 |
case 1: /* fcompp */ |
| 2362 |
gen_op_fmov_FT0_STN(1);
|
| 2363 |
gen_op_fcom_ST0_FT0(); |
| 2364 |
gen_op_fpop(); |
| 2365 |
gen_op_fpop(); |
| 2366 |
break;
|
| 2367 |
default:
|
| 2368 |
goto illegal_op;
|
| 2369 |
} |
| 2370 |
break;
|
| 2371 |
case 0x3c: /* df/4 */ |
| 2372 |
switch(rm) {
|
| 2373 |
case 0: |
| 2374 |
gen_op_fnstsw_EAX(); |
| 2375 |
break;
|
| 2376 |
default:
|
| 2377 |
goto illegal_op;
|
| 2378 |
} |
| 2379 |
break;
|
| 2380 |
default:
|
| 2381 |
goto illegal_op;
|
| 2382 |
} |
| 2383 |
} |
| 2384 |
break;
|
| 2385 |
/************************/
|
| 2386 |
/* string ops */
|
| 2387 |
case 0xa4: /* movsS */ |
| 2388 |
case 0xa5: |
| 2389 |
if ((b & 1) == 0) |
| 2390 |
ot = OT_BYTE; |
| 2391 |
else
|
| 2392 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2393 |
if (prefixes & PREFIX_REPZ) {
|
| 2394 |
gen_op_movs[3 + ot]();
|
| 2395 |
} else {
|
| 2396 |
gen_op_movs[ot](); |
| 2397 |
} |
| 2398 |
break;
|
| 2399 |
|
| 2400 |
case 0xaa: /* stosS */ |
| 2401 |
case 0xab: |
| 2402 |
if ((b & 1) == 0) |
| 2403 |
ot = OT_BYTE; |
| 2404 |
else
|
| 2405 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2406 |
if (prefixes & PREFIX_REPZ) {
|
| 2407 |
gen_op_stos[3 + ot]();
|
| 2408 |
} else {
|
| 2409 |
gen_op_stos[ot](); |
| 2410 |
} |
| 2411 |
break;
|
| 2412 |
case 0xac: /* lodsS */ |
| 2413 |
case 0xad: |
| 2414 |
if ((b & 1) == 0) |
| 2415 |
ot = OT_BYTE; |
| 2416 |
else
|
| 2417 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2418 |
if (prefixes & PREFIX_REPZ) {
|
| 2419 |
gen_op_lods[3 + ot]();
|
| 2420 |
} else {
|
| 2421 |
gen_op_lods[ot](); |
| 2422 |
} |
| 2423 |
break;
|
| 2424 |
case 0xae: /* scasS */ |
| 2425 |
case 0xaf: |
| 2426 |
if ((b & 1) == 0) |
| 2427 |
ot = OT_BYTE; |
| 2428 |
else
|
| 2429 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2430 |
if (prefixes & PREFIX_REPNZ) {
|
| 2431 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2432 |
gen_op_set_cc_op(s->cc_op); |
| 2433 |
gen_op_scas[6 + ot]();
|
| 2434 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2435 |
} else if (prefixes & PREFIX_REPZ) { |
| 2436 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2437 |
gen_op_set_cc_op(s->cc_op); |
| 2438 |
gen_op_scas[3 + ot]();
|
| 2439 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2440 |
} else {
|
| 2441 |
gen_op_scas[ot](); |
| 2442 |
s->cc_op = CC_OP_SUBB + ot; |
| 2443 |
} |
| 2444 |
break;
|
| 2445 |
|
| 2446 |
case 0xa6: /* cmpsS */ |
| 2447 |
case 0xa7: |
| 2448 |
if ((b & 1) == 0) |
| 2449 |
ot = OT_BYTE; |
| 2450 |
else
|
| 2451 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2452 |
if (prefixes & PREFIX_REPNZ) {
|
| 2453 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2454 |
gen_op_set_cc_op(s->cc_op); |
| 2455 |
gen_op_cmps[6 + ot]();
|
| 2456 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2457 |
} else if (prefixes & PREFIX_REPZ) { |
| 2458 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2459 |
gen_op_set_cc_op(s->cc_op); |
| 2460 |
gen_op_cmps[3 + ot]();
|
| 2461 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2462 |
} else {
|
| 2463 |
gen_op_cmps[ot](); |
| 2464 |
s->cc_op = CC_OP_SUBB + ot; |
| 2465 |
} |
| 2466 |
break;
|
| 2467 |
|
| 2468 |
/************************/
|
| 2469 |
/* port I/O */
|
| 2470 |
case 0x6c: /* insS */ |
| 2471 |
case 0x6d: |
| 2472 |
if ((b & 1) == 0) |
| 2473 |
ot = OT_BYTE; |
| 2474 |
else
|
| 2475 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2476 |
if (prefixes & PREFIX_REPZ) {
|
| 2477 |
gen_op_ins[3 + ot]();
|
| 2478 |
} else {
|
| 2479 |
gen_op_ins[ot](); |
| 2480 |
} |
| 2481 |
break;
|
| 2482 |
case 0x6e: /* outsS */ |
| 2483 |
case 0x6f: |
| 2484 |
if ((b & 1) == 0) |
| 2485 |
ot = OT_BYTE; |
| 2486 |
else
|
| 2487 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2488 |
if (prefixes & PREFIX_REPZ) {
|
| 2489 |
gen_op_outs[3 + ot]();
|
| 2490 |
} else {
|
| 2491 |
gen_op_outs[ot](); |
| 2492 |
} |
| 2493 |
break;
|
| 2494 |
case 0xe4: |
| 2495 |
case 0xe5: |
| 2496 |
if ((b & 1) == 0) |
| 2497 |
ot = OT_BYTE; |
| 2498 |
else
|
| 2499 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2500 |
val = ldub(s->pc++); |
| 2501 |
gen_op_movl_T0_im(val); |
| 2502 |
gen_op_in[ot](); |
| 2503 |
gen_op_mov_reg_T1[ot][R_EAX](); |
| 2504 |
break;
|
| 2505 |
case 0xe6: |
| 2506 |
case 0xe7: |
| 2507 |
if ((b & 1) == 0) |
| 2508 |
ot = OT_BYTE; |
| 2509 |
else
|
| 2510 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2511 |
val = ldub(s->pc++); |
| 2512 |
gen_op_movl_T0_im(val); |
| 2513 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
| 2514 |
gen_op_out[ot](); |
| 2515 |
break;
|
| 2516 |
case 0xec: |
| 2517 |
case 0xed: |
| 2518 |
if ((b & 1) == 0) |
| 2519 |
ot = OT_BYTE; |
| 2520 |
else
|
| 2521 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2522 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
| 2523 |
gen_op_in[ot](); |
| 2524 |
gen_op_mov_reg_T1[ot][R_EAX](); |
| 2525 |
break;
|
| 2526 |
case 0xee: |
| 2527 |
case 0xef: |
| 2528 |
if ((b & 1) == 0) |
| 2529 |
ot = OT_BYTE; |
| 2530 |
else
|
| 2531 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2532 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
| 2533 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
| 2534 |
gen_op_out[ot](); |
| 2535 |
break;
|
| 2536 |
|
| 2537 |
/************************/
|
| 2538 |
/* control */
|
| 2539 |
case 0xc2: /* ret im */ |
| 2540 |
/* XXX: handle stack pop ? */
|
| 2541 |
val = ldsw(s->pc); |
| 2542 |
s->pc += 2;
|
| 2543 |
gen_op_popl_T0(); |
| 2544 |
gen_op_addl_ESP_im(val); |
| 2545 |
gen_op_jmp_T0(); |
| 2546 |
s->is_jmp = 1;
|
| 2547 |
break;
|
| 2548 |
case 0xc3: /* ret */ |
| 2549 |
gen_op_popl_T0(); |
| 2550 |
gen_op_jmp_T0(); |
| 2551 |
s->is_jmp = 1;
|
| 2552 |
break;
|
| 2553 |
case 0xe8: /* call */ |
| 2554 |
val = insn_get(s, OT_LONG); |
| 2555 |
val += (long)s->pc;
|
| 2556 |
gen_op_movl_T1_im((long)s->pc);
|
| 2557 |
gen_op_pushl_T1(); |
| 2558 |
gen_op_jmp_im(val); |
| 2559 |
s->is_jmp = 1;
|
| 2560 |
break;
|
| 2561 |
case 0xe9: /* jmp */ |
| 2562 |
val = insn_get(s, OT_LONG); |
| 2563 |
val += (long)s->pc;
|
| 2564 |
gen_op_jmp_im(val); |
| 2565 |
s->is_jmp = 1;
|
| 2566 |
break;
|
| 2567 |
case 0xeb: /* jmp Jb */ |
| 2568 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 2569 |
val += (long)s->pc;
|
| 2570 |
gen_op_jmp_im(val); |
| 2571 |
s->is_jmp = 1;
|
| 2572 |
break;
|
| 2573 |
case 0x70 ... 0x7f: /* jcc Jb */ |
| 2574 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 2575 |
val += (long)s->pc;
|
| 2576 |
goto do_jcc;
|
| 2577 |
case 0x180 ... 0x18f: /* jcc Jv */ |
| 2578 |
if (dflag) {
|
| 2579 |
val = insn_get(s, OT_LONG); |
| 2580 |
} else {
|
| 2581 |
val = (int16_t)insn_get(s, OT_WORD); |
| 2582 |
} |
| 2583 |
val += (long)s->pc; /* XXX: fix 16 bit wrap */ |
| 2584 |
do_jcc:
|
| 2585 |
gen_jcc(s, b, val); |
| 2586 |
s->is_jmp = 1;
|
| 2587 |
break;
|
| 2588 |
|
| 2589 |
case 0x190 ... 0x19f: |
| 2590 |
modrm = ldub(s->pc++); |
| 2591 |
gen_setcc(s, b); |
| 2592 |
gen_ldst_modrm(s, modrm, OT_BYTE, OR_TMP0, 1);
|
| 2593 |
break;
|
| 2594 |
|
| 2595 |
/************************/
|
| 2596 |
/* flags */
|
| 2597 |
case 0x9c: /* pushf */ |
| 2598 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2599 |
gen_op_set_cc_op(s->cc_op); |
| 2600 |
gen_op_movl_T0_eflags(); |
| 2601 |
gen_op_pushl_T0(); |
| 2602 |
break;
|
| 2603 |
case 0x9d: /* popf */ |
| 2604 |
gen_op_popl_T0(); |
| 2605 |
gen_op_movl_eflags_T0(); |
| 2606 |
s->cc_op = CC_OP_EFLAGS; |
| 2607 |
break;
|
| 2608 |
case 0x9e: /* sahf */ |
| 2609 |
gen_op_mov_TN_reg[OT_BYTE][0][R_AH]();
|
| 2610 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2611 |
gen_op_set_cc_op(s->cc_op); |
| 2612 |
gen_op_movb_eflags_T0(); |
| 2613 |
s->cc_op = CC_OP_EFLAGS; |
| 2614 |
break;
|
| 2615 |
case 0x9f: /* lahf */ |
| 2616 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2617 |
gen_op_set_cc_op(s->cc_op); |
| 2618 |
gen_op_movl_T0_eflags(); |
| 2619 |
gen_op_mov_reg_T0[OT_BYTE][R_AH](); |
| 2620 |
break;
|
| 2621 |
case 0xf5: /* cmc */ |
| 2622 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2623 |
gen_op_set_cc_op(s->cc_op); |
| 2624 |
gen_op_cmc(); |
| 2625 |
s->cc_op = CC_OP_EFLAGS; |
| 2626 |
break;
|
| 2627 |
case 0xf8: /* clc */ |
| 2628 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2629 |
gen_op_set_cc_op(s->cc_op); |
| 2630 |
gen_op_clc(); |
| 2631 |
s->cc_op = CC_OP_EFLAGS; |
| 2632 |
break;
|
| 2633 |
case 0xf9: /* stc */ |
| 2634 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2635 |
gen_op_set_cc_op(s->cc_op); |
| 2636 |
gen_op_stc(); |
| 2637 |
s->cc_op = CC_OP_EFLAGS; |
| 2638 |
break;
|
| 2639 |
case 0xfc: /* cld */ |
| 2640 |
gen_op_cld(); |
| 2641 |
break;
|
| 2642 |
case 0xfd: /* std */ |
| 2643 |
gen_op_std(); |
| 2644 |
break;
|
| 2645 |
|
| 2646 |
/************************/
|
| 2647 |
/* bit operations */
|
| 2648 |
case 0x1ba: /* bt/bts/btr/btc Gv, im */ |
| 2649 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2650 |
modrm = ldub(s->pc++); |
| 2651 |
op = (modrm >> 3) & 7; |
| 2652 |
mod = (modrm >> 6) & 3; |
| 2653 |
rm = modrm & 7;
|
| 2654 |
if (mod != 3) { |
| 2655 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2656 |
gen_op_ld_T0_A0[ot](); |
| 2657 |
} else {
|
| 2658 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 2659 |
} |
| 2660 |
/* load shift */
|
| 2661 |
val = ldub(s->pc++); |
| 2662 |
gen_op_movl_T1_im(val); |
| 2663 |
if (op < 4) |
| 2664 |
goto illegal_op;
|
| 2665 |
op -= 4;
|
| 2666 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
| 2667 |
s->cc_op = CC_OP_SARB + ot; |
| 2668 |
if (op != 0) { |
| 2669 |
if (mod != 3) |
| 2670 |
gen_op_st_T0_A0[ot](); |
| 2671 |
else
|
| 2672 |
gen_op_mov_reg_T0[ot][rm](); |
| 2673 |
} |
| 2674 |
break;
|
| 2675 |
case 0x1a3: /* bt Gv, Ev */ |
| 2676 |
op = 0;
|
| 2677 |
goto do_btx;
|
| 2678 |
case 0x1ab: /* bts */ |
| 2679 |
op = 1;
|
| 2680 |
goto do_btx;
|
| 2681 |
case 0x1b3: /* btr */ |
| 2682 |
op = 2;
|
| 2683 |
goto do_btx;
|
| 2684 |
case 0x1bb: /* btc */ |
| 2685 |
op = 3;
|
| 2686 |
do_btx:
|
| 2687 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2688 |
modrm = ldub(s->pc++); |
| 2689 |
reg = (modrm >> 3) & 7; |
| 2690 |
mod = (modrm >> 6) & 3; |
| 2691 |
rm = modrm & 7;
|
| 2692 |
gen_op_mov_TN_reg[OT_LONG][1][reg]();
|
| 2693 |
if (mod != 3) { |
| 2694 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2695 |
/* specific case: we need to add a displacement */
|
| 2696 |
if (ot == OT_WORD)
|
| 2697 |
gen_op_add_bitw_A0_T1(); |
| 2698 |
else
|
| 2699 |
gen_op_add_bitl_A0_T1(); |
| 2700 |
gen_op_ld_T0_A0[ot](); |
| 2701 |
} else {
|
| 2702 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 2703 |
} |
| 2704 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
| 2705 |
s->cc_op = CC_OP_SARB + ot; |
| 2706 |
if (op != 0) { |
| 2707 |
if (mod != 3) |
| 2708 |
gen_op_st_T0_A0[ot](); |
| 2709 |
else
|
| 2710 |
gen_op_mov_reg_T0[ot][rm](); |
| 2711 |
} |
| 2712 |
break;
|
| 2713 |
case 0x1bc: /* bsf */ |
| 2714 |
case 0x1bd: /* bsr */ |
| 2715 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2716 |
modrm = ldub(s->pc++); |
| 2717 |
reg = (modrm >> 3) & 7; |
| 2718 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 2719 |
gen_op_bsx_T0_cc[ot - OT_WORD][b & 1]();
|
| 2720 |
/* NOTE: we always write back the result. Intel doc says it is
|
| 2721 |
undefined if T0 == 0 */
|
| 2722 |
gen_op_mov_reg_T0[ot][reg](); |
| 2723 |
s->cc_op = CC_OP_LOGICB + ot; |
| 2724 |
break;
|
| 2725 |
/************************/
|
| 2726 |
/* bcd */
|
| 2727 |
case 0x27: /* daa */ |
| 2728 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2729 |
gen_op_set_cc_op(s->cc_op); |
| 2730 |
gen_op_daa(); |
| 2731 |
s->cc_op = CC_OP_EFLAGS; |
| 2732 |
break;
|
| 2733 |
case 0x2f: /* das */ |
| 2734 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2735 |
gen_op_set_cc_op(s->cc_op); |
| 2736 |
gen_op_das(); |
| 2737 |
s->cc_op = CC_OP_EFLAGS; |
| 2738 |
break;
|
| 2739 |
case 0x37: /* aaa */ |
| 2740 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2741 |
gen_op_set_cc_op(s->cc_op); |
| 2742 |
gen_op_aaa(); |
| 2743 |
s->cc_op = CC_OP_EFLAGS; |
| 2744 |
break;
|
| 2745 |
case 0x3f: /* aas */ |
| 2746 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2747 |
gen_op_set_cc_op(s->cc_op); |
| 2748 |
gen_op_aas(); |
| 2749 |
s->cc_op = CC_OP_EFLAGS; |
| 2750 |
break;
|
| 2751 |
case 0xd4: /* aam */ |
| 2752 |
val = ldub(s->pc++); |
| 2753 |
gen_op_aam(val); |
| 2754 |
s->cc_op = CC_OP_LOGICB; |
| 2755 |
break;
|
| 2756 |
case 0xd5: /* aad */ |
| 2757 |
val = ldub(s->pc++); |
| 2758 |
gen_op_aad(val); |
| 2759 |
s->cc_op = CC_OP_LOGICB; |
| 2760 |
break;
|
| 2761 |
/************************/
|
| 2762 |
/* misc */
|
| 2763 |
case 0x90: /* nop */ |
| 2764 |
break;
|
| 2765 |
case 0xcc: /* int3 */ |
| 2766 |
gen_op_int3((long)pc_start);
|
| 2767 |
s->is_jmp = 1;
|
| 2768 |
break;
|
| 2769 |
case 0xcd: /* int N */ |
| 2770 |
val = ldub(s->pc++); |
| 2771 |
/* XXX: currently we ignore the interrupt number */
|
| 2772 |
gen_op_int_im((long)pc_start);
|
| 2773 |
s->is_jmp = 1;
|
| 2774 |
break;
|
| 2775 |
case 0xce: /* into */ |
| 2776 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2777 |
gen_op_set_cc_op(s->cc_op); |
| 2778 |
gen_op_into((long)pc_start, (long)s->pc); |
| 2779 |
s->is_jmp = 1;
|
| 2780 |
break;
|
| 2781 |
case 0x1c8 ... 0x1cf: /* bswap reg */ |
| 2782 |
reg = b & 7;
|
| 2783 |
gen_op_mov_TN_reg[OT_LONG][0][reg]();
|
| 2784 |
gen_op_bswapl_T0(); |
| 2785 |
gen_op_mov_reg_T0[OT_LONG][reg](); |
| 2786 |
break;
|
| 2787 |
case 0xd6: /* salc */ |
| 2788 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2789 |
gen_op_set_cc_op(s->cc_op); |
| 2790 |
gen_op_salc(); |
| 2791 |
break;
|
| 2792 |
case 0xe0: /* loopnz */ |
| 2793 |
case 0xe1: /* loopz */ |
| 2794 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2795 |
gen_op_set_cc_op(s->cc_op); |
| 2796 |
/* FALL THRU */
|
| 2797 |
case 0xe2: /* loop */ |
| 2798 |
case 0xe3: /* jecxz */ |
| 2799 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 2800 |
val += (long)s->pc;
|
| 2801 |
gen_op_loop[s->aflag][b & 3](val, (long)s->pc); |
| 2802 |
s->is_jmp = 1;
|
| 2803 |
break;
|
| 2804 |
case 0x1a2: /* rdtsc */ |
| 2805 |
gen_op_rdtsc(); |
| 2806 |
break;
|
| 2807 |
#if 0
|
| 2808 |
case 0x1a2: /* cpuid */
|
| 2809 |
gen_insn0(OP_ASM);
|
| 2810 |
break;
|
| 2811 |
#endif
|
| 2812 |
default:
|
| 2813 |
goto illegal_op;
|
| 2814 |
} |
| 2815 |
return (long)s->pc; |
| 2816 |
illegal_op:
|
| 2817 |
return -1; |
| 2818 |
} |
| 2819 |
|
| 2820 |
/* return the next pc */
|
| 2821 |
int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size, |
| 2822 |
int *gen_code_size_ptr, uint8_t *pc_start,
|
| 2823 |
int flags)
|
| 2824 |
{
|
| 2825 |
DisasContext dc1, *dc = &dc1; |
| 2826 |
uint8_t *gen_code_end, *pc_ptr; |
| 2827 |
long ret;
|
| 2828 |
#ifdef DEBUG_DISAS
|
| 2829 |
struct disassemble_info disasm_info;
|
| 2830 |
#endif
|
| 2831 |
dc->code32 = (flags >> GEN_FLAG_CODE32_SHIFT) & 1;
|
| 2832 |
dc->addseg = (flags >> GEN_FLAG_ADDSEG_SHIFT) & 1;
|
| 2833 |
dc->f_st = (flags >> GEN_FLAG_ST_SHIFT) & 7;
|
| 2834 |
dc->cc_op = CC_OP_DYNAMIC; |
| 2835 |
gen_code_ptr = gen_code_buf; |
| 2836 |
gen_code_end = gen_code_buf + max_code_size - 4096;
|
| 2837 |
gen_start(); |
| 2838 |
|
| 2839 |
dc->is_jmp = 0;
|
| 2840 |
pc_ptr = pc_start; |
| 2841 |
do {
|
| 2842 |
ret = disas_insn(dc, pc_ptr); |
| 2843 |
if (ret == -1) { |
| 2844 |
error("unknown instruction at PC=0x%x B=%02x %02x %02x",
|
| 2845 |
pc_ptr, pc_ptr[0], pc_ptr[1], pc_ptr[2]); |
| 2846 |
abort(); |
| 2847 |
} |
| 2848 |
pc_ptr = (void *)ret;
|
| 2849 |
} while (!dc->is_jmp && gen_code_ptr < gen_code_end);
|
| 2850 |
/* we must store the eflags state if it is not already done */
|
| 2851 |
if (dc->cc_op != CC_OP_DYNAMIC)
|
| 2852 |
gen_op_set_cc_op(dc->cc_op); |
| 2853 |
if (dc->is_jmp != 1) { |
| 2854 |
/* we add an additionnal jmp to update the simulated PC */
|
| 2855 |
gen_op_jmp_im(ret); |
| 2856 |
} |
| 2857 |
gen_end(); |
| 2858 |
*gen_code_size_ptr = gen_code_ptr - gen_code_buf; |
| 2859 |
|
| 2860 |
#ifdef DEBUG_DISAS
|
| 2861 |
if (loglevel) {
|
| 2862 |
uint8_t *pc; |
| 2863 |
int count;
|
| 2864 |
|
| 2865 |
INIT_DISASSEMBLE_INFO(disasm_info, logfile, fprintf); |
| 2866 |
#if 0
|
| 2867 |
disasm_info.flavour = bfd_get_flavour (abfd);
|
| 2868 |
disasm_info.arch = bfd_get_arch (abfd);
|
| 2869 |
disasm_info.mach = bfd_get_mach (abfd);
|
| 2870 |
#endif
|
| 2871 |
#ifdef WORDS_BIGENDIAN
|
| 2872 |
disasm_info.endian = BFD_ENDIAN_BIG; |
| 2873 |
#else
|
| 2874 |
disasm_info.endian = BFD_ENDIAN_LITTLE; |
| 2875 |
#endif
|
| 2876 |
fprintf(logfile, "IN:\n");
|
| 2877 |
disasm_info.buffer = pc_start; |
| 2878 |
disasm_info.buffer_vma = (unsigned long)pc_start; |
| 2879 |
disasm_info.buffer_length = pc_ptr - pc_start; |
| 2880 |
pc = pc_start; |
| 2881 |
while (pc < pc_ptr) {
|
| 2882 |
fprintf(logfile, "0x%08lx: ", (long)pc); |
| 2883 |
count = print_insn_i386((unsigned long)pc, &disasm_info); |
| 2884 |
fprintf(logfile, "\n");
|
| 2885 |
pc += count; |
| 2886 |
} |
| 2887 |
fprintf(logfile, "\n");
|
| 2888 |
|
| 2889 |
pc = gen_code_buf; |
| 2890 |
disasm_info.buffer = pc; |
| 2891 |
disasm_info.buffer_vma = (unsigned long)pc; |
| 2892 |
disasm_info.buffer_length = *gen_code_size_ptr; |
| 2893 |
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
|
| 2894 |
while (pc < gen_code_ptr) {
|
| 2895 |
fprintf(logfile, "0x%08lx: ", (long)pc); |
| 2896 |
count = print_insn_i386((unsigned long)pc, &disasm_info); |
| 2897 |
fprintf(logfile, "\n");
|
| 2898 |
pc += count; |
| 2899 |
} |
| 2900 |
fprintf(logfile, "\n");
|
| 2901 |
} |
| 2902 |
#endif
|
| 2903 |
return 0; |
| 2904 |
} |
| 2905 |
|
| 2906 |
CPUX86State *cpu_x86_init(void)
|
| 2907 |
{
|
| 2908 |
CPUX86State *env; |
| 2909 |
int i;
|
| 2910 |
|
| 2911 |
cpu_x86_tblocks_init(); |
| 2912 |
|
| 2913 |
env = malloc(sizeof(CPUX86State));
|
| 2914 |
if (!env)
|
| 2915 |
return NULL; |
| 2916 |
memset(env, 0, sizeof(CPUX86State)); |
| 2917 |
/* basic FPU init */
|
| 2918 |
for(i = 0;i < 8; i++) |
| 2919 |
env->fptags[i] = 1;
|
| 2920 |
env->fpuc = 0x37f;
|
| 2921 |
/* flags setup */
|
| 2922 |
env->cc_op = CC_OP_EFLAGS; |
| 2923 |
env->df = 1;
|
| 2924 |
return env;
|
| 2925 |
} |
| 2926 |
|
| 2927 |
void cpu_x86_close(CPUX86State *env)
|
| 2928 |
{
|
| 2929 |
free(env); |
| 2930 |
} |