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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 library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <signal.h> |
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#include <assert.h> |
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#include <sys/mman.h> |
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#include "cpu-i386.h" |
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#include "exec.h" |
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#include "disas.h" |
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/* XXX: move that elsewhere */
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static uint16_t *gen_opc_ptr;
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static uint32_t *gen_opparam_ptr;
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#define PREFIX_REPZ 0x01 |
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#define PREFIX_REPNZ 0x02 |
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#define PREFIX_LOCK 0x04 |
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#define PREFIX_DATA 0x08 |
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#define PREFIX_ADR 0x10 |
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typedef struct DisasContext { |
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/* current insn context */
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int override; /* -1 if no override */ |
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int prefix;
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int aflag, dflag;
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uint8_t *pc; /* pc = eip + cs_base */
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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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uint8_t *cs_base; /* base of CS segment */
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int pe; /* protected mode */ |
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int code32; /* 32 bit code segment */ |
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int ss32; /* 32 bit stack 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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int vm86; /* vm86 mode */ |
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int cpl;
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int iopl;
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int tf; /* TF cpu flag */ |
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int mem_index; /* select memory access functions */ |
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struct TranslationBlock *tb;
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int popl_esp_hack; /* for correct popl with esp base handling */ |
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} DisasContext; |
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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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/* 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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enum {
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#define DEF(s, n, copy_size) INDEX_op_ ## s, |
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#include "opc-i386.h" |
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#undef DEF
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NB_OPS, |
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}; |
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#include "gen-op-i386.h" |
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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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typedef void (GenOpFunc3)(long, long, long); |
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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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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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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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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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static GenOpFunc *gen_op_cmov_reg_T1_T0[2][8] = { |
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[0] = {
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gen_op_cmovw_EAX_T1_T0, |
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gen_op_cmovw_ECX_T1_T0, |
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gen_op_cmovw_EDX_T1_T0, |
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gen_op_cmovw_EBX_T1_T0, |
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gen_op_cmovw_ESP_T1_T0, |
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gen_op_cmovw_EBP_T1_T0, |
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gen_op_cmovw_ESI_T1_T0, |
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gen_op_cmovw_EDI_T1_T0, |
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}, |
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[1] = {
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gen_op_cmovl_EAX_T1_T0, |
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gen_op_cmovl_ECX_T1_T0, |
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gen_op_cmovl_EDX_T1_T0, |
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gen_op_cmovl_EBX_T1_T0, |
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gen_op_cmovl_ESP_T1_T0, |
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gen_op_cmovl_EBP_T1_T0, |
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gen_op_cmovl_ESI_T1_T0, |
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gen_op_cmovl_EDI_T1_T0, |
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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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NULL,
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gen_op_orl_T0_T1, |
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NULL,
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NULL,
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gen_op_andl_T0_T1, |
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NULL,
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gen_op_xorl_T0_T1, |
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NULL,
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}; |
377 |
|
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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, |
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gen_op_sbbb_T0_T1_cc, |
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}, |
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[OT_WORD] = { |
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gen_op_adcw_T0_T1_cc, |
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gen_op_sbbw_T0_T1_cc, |
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}, |
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[OT_LONG] = { |
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gen_op_adcl_T0_T1_cc, |
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gen_op_sbbl_T0_T1_cc, |
390 |
}, |
391 |
}; |
392 |
|
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static GenOpFunc *gen_op_arithc_mem_T0_T1_cc[3][2] = { |
394 |
[OT_BYTE] = { |
395 |
gen_op_adcb_mem_T0_T1_cc, |
396 |
gen_op_sbbb_mem_T0_T1_cc, |
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}, |
398 |
[OT_WORD] = { |
399 |
gen_op_adcw_mem_T0_T1_cc, |
400 |
gen_op_sbbw_mem_T0_T1_cc, |
401 |
}, |
402 |
[OT_LONG] = { |
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gen_op_adcl_mem_T0_T1_cc, |
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gen_op_sbbl_mem_T0_T1_cc, |
405 |
}, |
406 |
}; |
407 |
|
408 |
static const int cc_op_arithb[8] = { |
409 |
CC_OP_ADDB, |
410 |
CC_OP_LOGICB, |
411 |
CC_OP_ADDB, |
412 |
CC_OP_SUBB, |
413 |
CC_OP_LOGICB, |
414 |
CC_OP_SUBB, |
415 |
CC_OP_LOGICB, |
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CC_OP_SUBB, |
417 |
}; |
418 |
|
419 |
static GenOpFunc *gen_op_cmpxchg_T0_T1_EAX_cc[3] = { |
420 |
gen_op_cmpxchgb_T0_T1_EAX_cc, |
421 |
gen_op_cmpxchgw_T0_T1_EAX_cc, |
422 |
gen_op_cmpxchgl_T0_T1_EAX_cc, |
423 |
}; |
424 |
|
425 |
static GenOpFunc *gen_op_cmpxchg_mem_T0_T1_EAX_cc[3] = { |
426 |
gen_op_cmpxchgb_mem_T0_T1_EAX_cc, |
427 |
gen_op_cmpxchgw_mem_T0_T1_EAX_cc, |
428 |
gen_op_cmpxchgl_mem_T0_T1_EAX_cc, |
429 |
}; |
430 |
|
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static GenOpFunc *gen_op_shift_T0_T1_cc[3][8] = { |
432 |
[OT_BYTE] = { |
433 |
gen_op_rolb_T0_T1_cc, |
434 |
gen_op_rorb_T0_T1_cc, |
435 |
gen_op_rclb_T0_T1_cc, |
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gen_op_rcrb_T0_T1_cc, |
437 |
gen_op_shlb_T0_T1_cc, |
438 |
gen_op_shrb_T0_T1_cc, |
439 |
gen_op_shlb_T0_T1_cc, |
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gen_op_sarb_T0_T1_cc, |
441 |
}, |
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[OT_WORD] = { |
443 |
gen_op_rolw_T0_T1_cc, |
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gen_op_rorw_T0_T1_cc, |
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gen_op_rclw_T0_T1_cc, |
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gen_op_rcrw_T0_T1_cc, |
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gen_op_shlw_T0_T1_cc, |
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gen_op_shrw_T0_T1_cc, |
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gen_op_shlw_T0_T1_cc, |
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gen_op_sarw_T0_T1_cc, |
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}, |
452 |
[OT_LONG] = { |
453 |
gen_op_roll_T0_T1_cc, |
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gen_op_rorl_T0_T1_cc, |
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gen_op_rcll_T0_T1_cc, |
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gen_op_rcrl_T0_T1_cc, |
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gen_op_shll_T0_T1_cc, |
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gen_op_shrl_T0_T1_cc, |
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gen_op_shll_T0_T1_cc, |
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gen_op_sarl_T0_T1_cc, |
461 |
}, |
462 |
}; |
463 |
|
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static GenOpFunc *gen_op_shift_mem_T0_T1_cc[3][8] = { |
465 |
[OT_BYTE] = { |
466 |
gen_op_rolb_mem_T0_T1_cc, |
467 |
gen_op_rorb_mem_T0_T1_cc, |
468 |
gen_op_rclb_mem_T0_T1_cc, |
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gen_op_rcrb_mem_T0_T1_cc, |
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gen_op_shlb_mem_T0_T1_cc, |
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gen_op_shrb_mem_T0_T1_cc, |
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gen_op_shlb_mem_T0_T1_cc, |
473 |
gen_op_sarb_mem_T0_T1_cc, |
474 |
}, |
475 |
[OT_WORD] = { |
476 |
gen_op_rolw_mem_T0_T1_cc, |
477 |
gen_op_rorw_mem_T0_T1_cc, |
478 |
gen_op_rclw_mem_T0_T1_cc, |
479 |
gen_op_rcrw_mem_T0_T1_cc, |
480 |
gen_op_shlw_mem_T0_T1_cc, |
481 |
gen_op_shrw_mem_T0_T1_cc, |
482 |
gen_op_shlw_mem_T0_T1_cc, |
483 |
gen_op_sarw_mem_T0_T1_cc, |
484 |
}, |
485 |
[OT_LONG] = { |
486 |
gen_op_roll_mem_T0_T1_cc, |
487 |
gen_op_rorl_mem_T0_T1_cc, |
488 |
gen_op_rcll_mem_T0_T1_cc, |
489 |
gen_op_rcrl_mem_T0_T1_cc, |
490 |
gen_op_shll_mem_T0_T1_cc, |
491 |
gen_op_shrl_mem_T0_T1_cc, |
492 |
gen_op_shll_mem_T0_T1_cc, |
493 |
gen_op_sarl_mem_T0_T1_cc, |
494 |
}, |
495 |
}; |
496 |
|
497 |
static GenOpFunc1 *gen_op_shiftd_T0_T1_im_cc[2][2] = { |
498 |
[0] = {
|
499 |
gen_op_shldw_T0_T1_im_cc, |
500 |
gen_op_shrdw_T0_T1_im_cc, |
501 |
}, |
502 |
[1] = {
|
503 |
gen_op_shldl_T0_T1_im_cc, |
504 |
gen_op_shrdl_T0_T1_im_cc, |
505 |
}, |
506 |
}; |
507 |
|
508 |
static GenOpFunc *gen_op_shiftd_T0_T1_ECX_cc[2][2] = { |
509 |
[0] = {
|
510 |
gen_op_shldw_T0_T1_ECX_cc, |
511 |
gen_op_shrdw_T0_T1_ECX_cc, |
512 |
}, |
513 |
[1] = {
|
514 |
gen_op_shldl_T0_T1_ECX_cc, |
515 |
gen_op_shrdl_T0_T1_ECX_cc, |
516 |
}, |
517 |
}; |
518 |
|
519 |
static GenOpFunc1 *gen_op_shiftd_mem_T0_T1_im_cc[2][2] = { |
520 |
[0] = {
|
521 |
gen_op_shldw_mem_T0_T1_im_cc, |
522 |
gen_op_shrdw_mem_T0_T1_im_cc, |
523 |
}, |
524 |
[1] = {
|
525 |
gen_op_shldl_mem_T0_T1_im_cc, |
526 |
gen_op_shrdl_mem_T0_T1_im_cc, |
527 |
}, |
528 |
}; |
529 |
|
530 |
static GenOpFunc *gen_op_shiftd_mem_T0_T1_ECX_cc[2][2] = { |
531 |
[0] = {
|
532 |
gen_op_shldw_mem_T0_T1_ECX_cc, |
533 |
gen_op_shrdw_mem_T0_T1_ECX_cc, |
534 |
}, |
535 |
[1] = {
|
536 |
gen_op_shldl_mem_T0_T1_ECX_cc, |
537 |
gen_op_shrdl_mem_T0_T1_ECX_cc, |
538 |
}, |
539 |
}; |
540 |
|
541 |
static GenOpFunc *gen_op_btx_T0_T1_cc[2][4] = { |
542 |
[0] = {
|
543 |
gen_op_btw_T0_T1_cc, |
544 |
gen_op_btsw_T0_T1_cc, |
545 |
gen_op_btrw_T0_T1_cc, |
546 |
gen_op_btcw_T0_T1_cc, |
547 |
}, |
548 |
[1] = {
|
549 |
gen_op_btl_T0_T1_cc, |
550 |
gen_op_btsl_T0_T1_cc, |
551 |
gen_op_btrl_T0_T1_cc, |
552 |
gen_op_btcl_T0_T1_cc, |
553 |
}, |
554 |
}; |
555 |
|
556 |
static GenOpFunc *gen_op_bsx_T0_cc[2][2] = { |
557 |
[0] = {
|
558 |
gen_op_bsfw_T0_cc, |
559 |
gen_op_bsrw_T0_cc, |
560 |
}, |
561 |
[1] = {
|
562 |
gen_op_bsfl_T0_cc, |
563 |
gen_op_bsrl_T0_cc, |
564 |
}, |
565 |
}; |
566 |
|
567 |
static GenOpFunc *gen_op_lds_T0_A0[3 * 3] = { |
568 |
gen_op_ldsb_T0_A0, |
569 |
gen_op_ldsw_T0_A0, |
570 |
NULL,
|
571 |
|
572 |
gen_op_ldsb_kernel_T0_A0, |
573 |
gen_op_ldsw_kernel_T0_A0, |
574 |
NULL,
|
575 |
|
576 |
gen_op_ldsb_user_T0_A0, |
577 |
gen_op_ldsw_user_T0_A0, |
578 |
NULL,
|
579 |
}; |
580 |
|
581 |
static GenOpFunc *gen_op_ldu_T0_A0[3 * 3] = { |
582 |
gen_op_ldub_T0_A0, |
583 |
gen_op_lduw_T0_A0, |
584 |
NULL,
|
585 |
|
586 |
gen_op_ldub_kernel_T0_A0, |
587 |
gen_op_lduw_kernel_T0_A0, |
588 |
NULL,
|
589 |
|
590 |
gen_op_ldub_user_T0_A0, |
591 |
gen_op_lduw_user_T0_A0, |
592 |
NULL,
|
593 |
}; |
594 |
|
595 |
/* sign does not matter, except for lidt/lgdt call (TODO: fix it) */
|
596 |
static GenOpFunc *gen_op_ld_T0_A0[3 * 3] = { |
597 |
gen_op_ldub_T0_A0, |
598 |
gen_op_lduw_T0_A0, |
599 |
gen_op_ldl_T0_A0, |
600 |
|
601 |
gen_op_ldub_kernel_T0_A0, |
602 |
gen_op_lduw_kernel_T0_A0, |
603 |
gen_op_ldl_kernel_T0_A0, |
604 |
|
605 |
gen_op_ldub_user_T0_A0, |
606 |
gen_op_lduw_user_T0_A0, |
607 |
gen_op_ldl_user_T0_A0, |
608 |
}; |
609 |
|
610 |
static GenOpFunc *gen_op_ld_T1_A0[3 * 3] = { |
611 |
gen_op_ldub_T1_A0, |
612 |
gen_op_lduw_T1_A0, |
613 |
gen_op_ldl_T1_A0, |
614 |
|
615 |
gen_op_ldub_kernel_T1_A0, |
616 |
gen_op_lduw_kernel_T1_A0, |
617 |
gen_op_ldl_kernel_T1_A0, |
618 |
|
619 |
gen_op_ldub_user_T1_A0, |
620 |
gen_op_lduw_user_T1_A0, |
621 |
gen_op_ldl_user_T1_A0, |
622 |
}; |
623 |
|
624 |
static GenOpFunc *gen_op_st_T0_A0[3 * 3] = { |
625 |
gen_op_stb_T0_A0, |
626 |
gen_op_stw_T0_A0, |
627 |
gen_op_stl_T0_A0, |
628 |
|
629 |
gen_op_stb_kernel_T0_A0, |
630 |
gen_op_stw_kernel_T0_A0, |
631 |
gen_op_stl_kernel_T0_A0, |
632 |
|
633 |
gen_op_stb_user_T0_A0, |
634 |
gen_op_stw_user_T0_A0, |
635 |
gen_op_stl_user_T0_A0, |
636 |
}; |
637 |
|
638 |
/* the _a32 and _a16 string operations use A0 as the base register. */
|
639 |
|
640 |
#define STRINGOP_NB 9 |
641 |
|
642 |
#define STRINGOP(x) \
|
643 |
gen_op_ ## x ## b_fast, \ |
644 |
gen_op_ ## x ## w_fast, \ |
645 |
gen_op_ ## x ## l_fast, \ |
646 |
gen_op_ ## x ## b_a32, \ |
647 |
gen_op_ ## x ## w_a32, \ |
648 |
gen_op_ ## x ## l_a32, \ |
649 |
gen_op_ ## x ## b_a16, \ |
650 |
gen_op_ ## x ## w_a16, \ |
651 |
gen_op_ ## x ## l_a16, |
652 |
|
653 |
static GenOpFunc *gen_op_scas[STRINGOP_NB * 3] = { |
654 |
STRINGOP(repz_scas) |
655 |
STRINGOP(repnz_scas) |
656 |
}; |
657 |
|
658 |
static GenOpFunc *gen_op_cmps[STRINGOP_NB * 3] = { |
659 |
STRINGOP(repz_cmps) |
660 |
STRINGOP(repnz_cmps) |
661 |
}; |
662 |
|
663 |
static inline void gen_string_movl_A0_ESI(DisasContext *s) |
664 |
{ |
665 |
int override;
|
666 |
|
667 |
override = s->override; |
668 |
if (s->aflag) {
|
669 |
/* 32 bit address */
|
670 |
if (s->addseg && override < 0) |
671 |
override = R_DS; |
672 |
if (override >= 0) { |
673 |
gen_op_movl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
674 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
675 |
} else {
|
676 |
gen_op_movl_A0_reg[R_ESI](); |
677 |
} |
678 |
} else {
|
679 |
/* 16 address, always override */
|
680 |
if (override < 0) |
681 |
override = R_DS; |
682 |
gen_op_movl_A0_reg[R_ESI](); |
683 |
gen_op_andl_A0_ffff(); |
684 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
685 |
} |
686 |
} |
687 |
|
688 |
static inline void gen_string_movl_A0_EDI(DisasContext *s) |
689 |
{ |
690 |
if (s->aflag) {
|
691 |
if (s->addseg) {
|
692 |
gen_op_movl_A0_seg(offsetof(CPUX86State,segs[R_ES].base)); |
693 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
694 |
} else {
|
695 |
gen_op_movl_A0_reg[R_EDI](); |
696 |
} |
697 |
} else {
|
698 |
gen_op_movl_A0_reg[R_EDI](); |
699 |
gen_op_andl_A0_ffff(); |
700 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_ES].base)); |
701 |
} |
702 |
} |
703 |
|
704 |
static GenOpFunc *gen_op_movl_T0_Dshift[3] = { |
705 |
gen_op_movl_T0_Dshiftb, |
706 |
gen_op_movl_T0_Dshiftw, |
707 |
gen_op_movl_T0_Dshiftl, |
708 |
}; |
709 |
|
710 |
static GenOpFunc2 *gen_op_jz_ecx[2] = { |
711 |
gen_op_jz_ecxw, |
712 |
gen_op_jz_ecxl, |
713 |
}; |
714 |
|
715 |
static GenOpFunc *gen_op_dec_ECX[2] = { |
716 |
gen_op_decw_ECX, |
717 |
gen_op_decl_ECX, |
718 |
}; |
719 |
|
720 |
static GenOpFunc2 *gen_op_string_jnz_sub[2][3] = { |
721 |
{ |
722 |
gen_op_string_jnz_subb, |
723 |
gen_op_string_jnz_subw, |
724 |
gen_op_string_jnz_subl, |
725 |
}, |
726 |
{ |
727 |
gen_op_string_jz_subb, |
728 |
gen_op_string_jz_subw, |
729 |
gen_op_string_jz_subl, |
730 |
}, |
731 |
}; |
732 |
|
733 |
static GenOpFunc *gen_op_in_DX_T0[3] = { |
734 |
gen_op_inb_DX_T0, |
735 |
gen_op_inw_DX_T0, |
736 |
gen_op_inl_DX_T0, |
737 |
}; |
738 |
|
739 |
static GenOpFunc *gen_op_out_DX_T0[3] = { |
740 |
gen_op_outb_DX_T0, |
741 |
gen_op_outw_DX_T0, |
742 |
gen_op_outl_DX_T0, |
743 |
}; |
744 |
|
745 |
static inline void gen_movs(DisasContext *s, int ot) |
746 |
{ |
747 |
gen_string_movl_A0_ESI(s); |
748 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
749 |
gen_string_movl_A0_EDI(s); |
750 |
gen_op_st_T0_A0[ot + s->mem_index](); |
751 |
gen_op_movl_T0_Dshift[ot](); |
752 |
if (s->aflag) {
|
753 |
gen_op_addl_ESI_T0(); |
754 |
gen_op_addl_EDI_T0(); |
755 |
} else {
|
756 |
gen_op_addw_ESI_T0(); |
757 |
gen_op_addw_EDI_T0(); |
758 |
} |
759 |
} |
760 |
|
761 |
/* same method as Valgrind : we generate jumps to current or next
|
762 |
instruction */
|
763 |
static inline void gen_repz_movs(DisasContext *s, int ot, |
764 |
unsigned int cur_eip, unsigned int next_eip) |
765 |
{ |
766 |
if (s->cc_op != CC_OP_DYNAMIC)
|
767 |
gen_op_set_cc_op(s->cc_op); |
768 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
769 |
gen_movs(s, ot); |
770 |
gen_op_dec_ECX[s->aflag](); |
771 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
772 |
s->is_jmp = 3;
|
773 |
} |
774 |
|
775 |
static inline void gen_stos(DisasContext *s, int ot) |
776 |
{ |
777 |
gen_op_mov_TN_reg[OT_LONG][0][R_EAX]();
|
778 |
gen_string_movl_A0_EDI(s); |
779 |
gen_op_st_T0_A0[ot + s->mem_index](); |
780 |
gen_op_movl_T0_Dshift[ot](); |
781 |
if (s->aflag) {
|
782 |
gen_op_addl_EDI_T0(); |
783 |
} else {
|
784 |
gen_op_addw_EDI_T0(); |
785 |
} |
786 |
} |
787 |
|
788 |
static inline void gen_repz_stos(DisasContext *s, int ot, |
789 |
unsigned int cur_eip, unsigned int next_eip) |
790 |
{ |
791 |
if (s->cc_op != CC_OP_DYNAMIC)
|
792 |
gen_op_set_cc_op(s->cc_op); |
793 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
794 |
gen_stos(s, ot); |
795 |
gen_op_dec_ECX[s->aflag](); |
796 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
797 |
s->is_jmp = 3;
|
798 |
} |
799 |
|
800 |
static inline void gen_lods(DisasContext *s, int ot) |
801 |
{ |
802 |
gen_string_movl_A0_ESI(s); |
803 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
804 |
gen_op_mov_reg_T0[ot][R_EAX](); |
805 |
gen_op_movl_T0_Dshift[ot](); |
806 |
if (s->aflag) {
|
807 |
gen_op_addl_ESI_T0(); |
808 |
} else {
|
809 |
gen_op_addw_ESI_T0(); |
810 |
} |
811 |
} |
812 |
|
813 |
static inline void gen_repz_lods(DisasContext *s, int ot, |
814 |
unsigned int cur_eip, unsigned int next_eip) |
815 |
{ |
816 |
if (s->cc_op != CC_OP_DYNAMIC)
|
817 |
gen_op_set_cc_op(s->cc_op); |
818 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
819 |
gen_lods(s, ot); |
820 |
gen_op_dec_ECX[s->aflag](); |
821 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
822 |
s->is_jmp = 3;
|
823 |
} |
824 |
|
825 |
static inline void gen_scas(DisasContext *s, int ot) |
826 |
{ |
827 |
gen_op_mov_TN_reg[OT_LONG][0][R_EAX]();
|
828 |
gen_string_movl_A0_EDI(s); |
829 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
830 |
gen_op_cmpl_T0_T1_cc(); |
831 |
gen_op_movl_T0_Dshift[ot](); |
832 |
if (s->aflag) {
|
833 |
gen_op_addl_EDI_T0(); |
834 |
} else {
|
835 |
gen_op_addw_EDI_T0(); |
836 |
} |
837 |
} |
838 |
|
839 |
#if 0
|
840 |
static inline void gen_repz_scas(DisasContext *s, int ot,
|
841 |
unsigned int cur_eip, unsigned int next_eip,
|
842 |
int nz)
|
843 |
{
|
844 |
if (s->cc_op != CC_OP_DYNAMIC)
|
845 |
gen_op_set_cc_op(s->cc_op);
|
846 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
847 |
gen_scas(s, ot);
|
848 |
gen_op_set_cc_op(CC_OP_SUBB + ot);
|
849 |
gen_op_string_jnz_sub[nz][ot]((long)s->tb, next_eip);
|
850 |
gen_op_dec_ECX[s->aflag]();
|
851 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
852 |
s->is_jmp = 3;
|
853 |
}
|
854 |
#endif
|
855 |
|
856 |
static inline void gen_cmps(DisasContext *s, int ot) |
857 |
{ |
858 |
gen_string_movl_A0_ESI(s); |
859 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
860 |
gen_string_movl_A0_EDI(s); |
861 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
862 |
gen_op_cmpl_T0_T1_cc(); |
863 |
gen_op_movl_T0_Dshift[ot](); |
864 |
if (s->aflag) {
|
865 |
gen_op_addl_ESI_T0(); |
866 |
gen_op_addl_EDI_T0(); |
867 |
} else {
|
868 |
gen_op_addw_ESI_T0(); |
869 |
gen_op_addw_EDI_T0(); |
870 |
} |
871 |
} |
872 |
|
873 |
static inline void gen_ins(DisasContext *s, int ot) |
874 |
{ |
875 |
gen_op_in_DX_T0[ot](); |
876 |
gen_string_movl_A0_EDI(s); |
877 |
gen_op_st_T0_A0[ot + s->mem_index](); |
878 |
gen_op_movl_T0_Dshift[ot](); |
879 |
if (s->aflag) {
|
880 |
gen_op_addl_EDI_T0(); |
881 |
} else {
|
882 |
gen_op_addw_EDI_T0(); |
883 |
} |
884 |
} |
885 |
|
886 |
static inline void gen_repz_ins(DisasContext *s, int ot, |
887 |
unsigned int cur_eip, unsigned int next_eip) |
888 |
{ |
889 |
if (s->cc_op != CC_OP_DYNAMIC)
|
890 |
gen_op_set_cc_op(s->cc_op); |
891 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
892 |
gen_ins(s, ot); |
893 |
gen_op_dec_ECX[s->aflag](); |
894 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
895 |
s->is_jmp = 3;
|
896 |
} |
897 |
|
898 |
static inline void gen_outs(DisasContext *s, int ot) |
899 |
{ |
900 |
gen_string_movl_A0_ESI(s); |
901 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
902 |
gen_op_out_DX_T0[ot](); |
903 |
gen_op_movl_T0_Dshift[ot](); |
904 |
if (s->aflag) {
|
905 |
gen_op_addl_ESI_T0(); |
906 |
} else {
|
907 |
gen_op_addw_ESI_T0(); |
908 |
} |
909 |
} |
910 |
|
911 |
static inline void gen_repz_outs(DisasContext *s, int ot, |
912 |
unsigned int cur_eip, unsigned int next_eip) |
913 |
{ |
914 |
if (s->cc_op != CC_OP_DYNAMIC)
|
915 |
gen_op_set_cc_op(s->cc_op); |
916 |
gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
|
917 |
gen_outs(s, ot); |
918 |
gen_op_dec_ECX[s->aflag](); |
919 |
gen_op_jmp_tb_next((long)s->tb, cur_eip);
|
920 |
s->is_jmp = 3;
|
921 |
} |
922 |
|
923 |
static inline void gen_string_ds(DisasContext *s, int ot, GenOpFunc **func) |
924 |
{ |
925 |
int index, override;
|
926 |
|
927 |
override = s->override; |
928 |
if (s->aflag) {
|
929 |
/* 32 bit address */
|
930 |
if (s->addseg && override < 0) |
931 |
override = R_DS; |
932 |
if (override >= 0) { |
933 |
gen_op_movl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
934 |
index = 3 + ot;
|
935 |
} else {
|
936 |
index = ot; |
937 |
} |
938 |
} else {
|
939 |
if (override < 0) |
940 |
override = R_DS; |
941 |
gen_op_movl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
942 |
/* 16 address, always override */
|
943 |
index = 6 + ot;
|
944 |
} |
945 |
func[index](); |
946 |
} |
947 |
|
948 |
static inline void gen_string_es(DisasContext *s, int ot, GenOpFunc **func) |
949 |
{ |
950 |
int index;
|
951 |
|
952 |
if (s->aflag) {
|
953 |
if (s->addseg) {
|
954 |
index = 3 + ot;
|
955 |
} else {
|
956 |
index = ot; |
957 |
} |
958 |
} else {
|
959 |
index = 6 + ot;
|
960 |
} |
961 |
func[index](); |
962 |
} |
963 |
|
964 |
|
965 |
static GenOpFunc *gen_op_in[3] = { |
966 |
gen_op_inb_T0_T1, |
967 |
gen_op_inw_T0_T1, |
968 |
gen_op_inl_T0_T1, |
969 |
}; |
970 |
|
971 |
static GenOpFunc *gen_op_out[3] = { |
972 |
gen_op_outb_T0_T1, |
973 |
gen_op_outw_T0_T1, |
974 |
gen_op_outl_T0_T1, |
975 |
}; |
976 |
|
977 |
enum {
|
978 |
JCC_O, |
979 |
JCC_B, |
980 |
JCC_Z, |
981 |
JCC_BE, |
982 |
JCC_S, |
983 |
JCC_P, |
984 |
JCC_L, |
985 |
JCC_LE, |
986 |
}; |
987 |
|
988 |
static GenOpFunc3 *gen_jcc_sub[3][8] = { |
989 |
[OT_BYTE] = { |
990 |
NULL,
|
991 |
gen_op_jb_subb, |
992 |
gen_op_jz_subb, |
993 |
gen_op_jbe_subb, |
994 |
gen_op_js_subb, |
995 |
NULL,
|
996 |
gen_op_jl_subb, |
997 |
gen_op_jle_subb, |
998 |
}, |
999 |
[OT_WORD] = { |
1000 |
NULL,
|
1001 |
gen_op_jb_subw, |
1002 |
gen_op_jz_subw, |
1003 |
gen_op_jbe_subw, |
1004 |
gen_op_js_subw, |
1005 |
NULL,
|
1006 |
gen_op_jl_subw, |
1007 |
gen_op_jle_subw, |
1008 |
}, |
1009 |
[OT_LONG] = { |
1010 |
NULL,
|
1011 |
gen_op_jb_subl, |
1012 |
gen_op_jz_subl, |
1013 |
gen_op_jbe_subl, |
1014 |
gen_op_js_subl, |
1015 |
NULL,
|
1016 |
gen_op_jl_subl, |
1017 |
gen_op_jle_subl, |
1018 |
}, |
1019 |
}; |
1020 |
static GenOpFunc2 *gen_op_loop[2][4] = { |
1021 |
[0] = {
|
1022 |
gen_op_loopnzw, |
1023 |
gen_op_loopzw, |
1024 |
gen_op_loopw, |
1025 |
gen_op_jecxzw, |
1026 |
}, |
1027 |
[1] = {
|
1028 |
gen_op_loopnzl, |
1029 |
gen_op_loopzl, |
1030 |
gen_op_loopl, |
1031 |
gen_op_jecxzl, |
1032 |
}, |
1033 |
}; |
1034 |
|
1035 |
static GenOpFunc *gen_setcc_slow[8] = { |
1036 |
gen_op_seto_T0_cc, |
1037 |
gen_op_setb_T0_cc, |
1038 |
gen_op_setz_T0_cc, |
1039 |
gen_op_setbe_T0_cc, |
1040 |
gen_op_sets_T0_cc, |
1041 |
gen_op_setp_T0_cc, |
1042 |
gen_op_setl_T0_cc, |
1043 |
gen_op_setle_T0_cc, |
1044 |
}; |
1045 |
|
1046 |
static GenOpFunc *gen_setcc_sub[3][8] = { |
1047 |
[OT_BYTE] = { |
1048 |
NULL,
|
1049 |
gen_op_setb_T0_subb, |
1050 |
gen_op_setz_T0_subb, |
1051 |
gen_op_setbe_T0_subb, |
1052 |
gen_op_sets_T0_subb, |
1053 |
NULL,
|
1054 |
gen_op_setl_T0_subb, |
1055 |
gen_op_setle_T0_subb, |
1056 |
}, |
1057 |
[OT_WORD] = { |
1058 |
NULL,
|
1059 |
gen_op_setb_T0_subw, |
1060 |
gen_op_setz_T0_subw, |
1061 |
gen_op_setbe_T0_subw, |
1062 |
gen_op_sets_T0_subw, |
1063 |
NULL,
|
1064 |
gen_op_setl_T0_subw, |
1065 |
gen_op_setle_T0_subw, |
1066 |
}, |
1067 |
[OT_LONG] = { |
1068 |
NULL,
|
1069 |
gen_op_setb_T0_subl, |
1070 |
gen_op_setz_T0_subl, |
1071 |
gen_op_setbe_T0_subl, |
1072 |
gen_op_sets_T0_subl, |
1073 |
NULL,
|
1074 |
gen_op_setl_T0_subl, |
1075 |
gen_op_setle_T0_subl, |
1076 |
}, |
1077 |
}; |
1078 |
|
1079 |
static GenOpFunc *gen_op_fp_arith_ST0_FT0[8] = { |
1080 |
gen_op_fadd_ST0_FT0, |
1081 |
gen_op_fmul_ST0_FT0, |
1082 |
gen_op_fcom_ST0_FT0, |
1083 |
gen_op_fcom_ST0_FT0, |
1084 |
gen_op_fsub_ST0_FT0, |
1085 |
gen_op_fsubr_ST0_FT0, |
1086 |
gen_op_fdiv_ST0_FT0, |
1087 |
gen_op_fdivr_ST0_FT0, |
1088 |
}; |
1089 |
|
1090 |
/* NOTE the exception in "r" op ordering */
|
1091 |
static GenOpFunc1 *gen_op_fp_arith_STN_ST0[8] = { |
1092 |
gen_op_fadd_STN_ST0, |
1093 |
gen_op_fmul_STN_ST0, |
1094 |
NULL,
|
1095 |
NULL,
|
1096 |
gen_op_fsubr_STN_ST0, |
1097 |
gen_op_fsub_STN_ST0, |
1098 |
gen_op_fdivr_STN_ST0, |
1099 |
gen_op_fdiv_STN_ST0, |
1100 |
}; |
1101 |
|
1102 |
/* if d == OR_TMP0, it means memory operand (address in A0) */
|
1103 |
static void gen_op(DisasContext *s1, int op, int ot, int d) |
1104 |
{ |
1105 |
GenOpFunc *gen_update_cc; |
1106 |
|
1107 |
if (d != OR_TMP0) {
|
1108 |
gen_op_mov_TN_reg[ot][0][d]();
|
1109 |
} else {
|
1110 |
gen_op_ld_T0_A0[ot + s1->mem_index](); |
1111 |
} |
1112 |
switch(op) {
|
1113 |
case OP_ADCL:
|
1114 |
case OP_SBBL:
|
1115 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
1116 |
gen_op_set_cc_op(s1->cc_op); |
1117 |
if (d != OR_TMP0) {
|
1118 |
gen_op_arithc_T0_T1_cc[ot][op - OP_ADCL](); |
1119 |
gen_op_mov_reg_T0[ot][d](); |
1120 |
} else {
|
1121 |
gen_op_arithc_mem_T0_T1_cc[ot][op - OP_ADCL](); |
1122 |
} |
1123 |
s1->cc_op = CC_OP_DYNAMIC; |
1124 |
goto the_end;
|
1125 |
case OP_ADDL:
|
1126 |
gen_op_addl_T0_T1(); |
1127 |
s1->cc_op = CC_OP_ADDB + ot; |
1128 |
gen_update_cc = gen_op_update2_cc; |
1129 |
break;
|
1130 |
case OP_SUBL:
|
1131 |
gen_op_subl_T0_T1(); |
1132 |
s1->cc_op = CC_OP_SUBB + ot; |
1133 |
gen_update_cc = gen_op_update2_cc; |
1134 |
break;
|
1135 |
default:
|
1136 |
case OP_ANDL:
|
1137 |
case OP_ORL:
|
1138 |
case OP_XORL:
|
1139 |
gen_op_arith_T0_T1_cc[op](); |
1140 |
s1->cc_op = CC_OP_LOGICB + ot; |
1141 |
gen_update_cc = gen_op_update1_cc; |
1142 |
break;
|
1143 |
case OP_CMPL:
|
1144 |
gen_op_cmpl_T0_T1_cc(); |
1145 |
s1->cc_op = CC_OP_SUBB + ot; |
1146 |
gen_update_cc = NULL;
|
1147 |
break;
|
1148 |
} |
1149 |
if (op != OP_CMPL) {
|
1150 |
if (d != OR_TMP0)
|
1151 |
gen_op_mov_reg_T0[ot][d](); |
1152 |
else
|
1153 |
gen_op_st_T0_A0[ot + s1->mem_index](); |
1154 |
} |
1155 |
/* the flags update must happen after the memory write (precise
|
1156 |
exception support) */
|
1157 |
if (gen_update_cc)
|
1158 |
gen_update_cc(); |
1159 |
the_end: ;
|
1160 |
} |
1161 |
|
1162 |
/* if d == OR_TMP0, it means memory operand (address in A0) */
|
1163 |
static void gen_inc(DisasContext *s1, int ot, int d, int c) |
1164 |
{ |
1165 |
if (d != OR_TMP0)
|
1166 |
gen_op_mov_TN_reg[ot][0][d]();
|
1167 |
else
|
1168 |
gen_op_ld_T0_A0[ot + s1->mem_index](); |
1169 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
1170 |
gen_op_set_cc_op(s1->cc_op); |
1171 |
if (c > 0) { |
1172 |
gen_op_incl_T0(); |
1173 |
s1->cc_op = CC_OP_INCB + ot; |
1174 |
} else {
|
1175 |
gen_op_decl_T0(); |
1176 |
s1->cc_op = CC_OP_DECB + ot; |
1177 |
} |
1178 |
if (d != OR_TMP0)
|
1179 |
gen_op_mov_reg_T0[ot][d](); |
1180 |
else
|
1181 |
gen_op_st_T0_A0[ot + s1->mem_index](); |
1182 |
gen_op_update_inc_cc(); |
1183 |
} |
1184 |
|
1185 |
static void gen_shift(DisasContext *s1, int op, int ot, int d, int s) |
1186 |
{ |
1187 |
if (d != OR_TMP0)
|
1188 |
gen_op_mov_TN_reg[ot][0][d]();
|
1189 |
else
|
1190 |
gen_op_ld_T0_A0[ot + s1->mem_index](); |
1191 |
if (s != OR_TMP1)
|
1192 |
gen_op_mov_TN_reg[ot][1][s]();
|
1193 |
/* for zero counts, flags are not updated, so must do it dynamically */
|
1194 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
1195 |
gen_op_set_cc_op(s1->cc_op); |
1196 |
|
1197 |
if (d != OR_TMP0)
|
1198 |
gen_op_shift_T0_T1_cc[ot][op](); |
1199 |
else
|
1200 |
gen_op_shift_mem_T0_T1_cc[ot][op](); |
1201 |
if (d != OR_TMP0)
|
1202 |
gen_op_mov_reg_T0[ot][d](); |
1203 |
s1->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
1204 |
} |
1205 |
|
1206 |
static void gen_shifti(DisasContext *s1, int op, int ot, int d, int c) |
1207 |
{ |
1208 |
/* currently not optimized */
|
1209 |
gen_op_movl_T1_im(c); |
1210 |
gen_shift(s1, op, ot, d, OR_TMP1); |
1211 |
} |
1212 |
|
1213 |
static void gen_lea_modrm(DisasContext *s, int modrm, int *reg_ptr, int *offset_ptr) |
1214 |
{ |
1215 |
int havesib;
|
1216 |
int base, disp;
|
1217 |
int index;
|
1218 |
int scale;
|
1219 |
int opreg;
|
1220 |
int mod, rm, code, override, must_add_seg;
|
1221 |
|
1222 |
override = s->override; |
1223 |
must_add_seg = s->addseg; |
1224 |
if (override >= 0) |
1225 |
must_add_seg = 1;
|
1226 |
mod = (modrm >> 6) & 3; |
1227 |
rm = modrm & 7;
|
1228 |
|
1229 |
if (s->aflag) {
|
1230 |
|
1231 |
havesib = 0;
|
1232 |
base = rm; |
1233 |
index = 0;
|
1234 |
scale = 0;
|
1235 |
|
1236 |
if (base == 4) { |
1237 |
havesib = 1;
|
1238 |
code = ldub(s->pc++); |
1239 |
scale = (code >> 6) & 3; |
1240 |
index = (code >> 3) & 7; |
1241 |
base = code & 7;
|
1242 |
} |
1243 |
|
1244 |
switch (mod) {
|
1245 |
case 0: |
1246 |
if (base == 5) { |
1247 |
base = -1;
|
1248 |
disp = ldl(s->pc); |
1249 |
s->pc += 4;
|
1250 |
} else {
|
1251 |
disp = 0;
|
1252 |
} |
1253 |
break;
|
1254 |
case 1: |
1255 |
disp = (int8_t)ldub(s->pc++); |
1256 |
break;
|
1257 |
default:
|
1258 |
case 2: |
1259 |
disp = ldl(s->pc); |
1260 |
s->pc += 4;
|
1261 |
break;
|
1262 |
} |
1263 |
|
1264 |
if (base >= 0) { |
1265 |
/* for correct popl handling with esp */
|
1266 |
if (base == 4 && s->popl_esp_hack) |
1267 |
disp += s->popl_esp_hack; |
1268 |
gen_op_movl_A0_reg[base](); |
1269 |
if (disp != 0) |
1270 |
gen_op_addl_A0_im(disp); |
1271 |
} else {
|
1272 |
gen_op_movl_A0_im(disp); |
1273 |
} |
1274 |
/* XXX: index == 4 is always invalid */
|
1275 |
if (havesib && (index != 4 || scale != 0)) { |
1276 |
gen_op_addl_A0_reg_sN[scale][index](); |
1277 |
} |
1278 |
if (must_add_seg) {
|
1279 |
if (override < 0) { |
1280 |
if (base == R_EBP || base == R_ESP)
|
1281 |
override = R_SS; |
1282 |
else
|
1283 |
override = R_DS; |
1284 |
} |
1285 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
1286 |
} |
1287 |
} else {
|
1288 |
switch (mod) {
|
1289 |
case 0: |
1290 |
if (rm == 6) { |
1291 |
disp = lduw(s->pc); |
1292 |
s->pc += 2;
|
1293 |
gen_op_movl_A0_im(disp); |
1294 |
rm = 0; /* avoid SS override */ |
1295 |
goto no_rm;
|
1296 |
} else {
|
1297 |
disp = 0;
|
1298 |
} |
1299 |
break;
|
1300 |
case 1: |
1301 |
disp = (int8_t)ldub(s->pc++); |
1302 |
break;
|
1303 |
default:
|
1304 |
case 2: |
1305 |
disp = lduw(s->pc); |
1306 |
s->pc += 2;
|
1307 |
break;
|
1308 |
} |
1309 |
switch(rm) {
|
1310 |
case 0: |
1311 |
gen_op_movl_A0_reg[R_EBX](); |
1312 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
1313 |
break;
|
1314 |
case 1: |
1315 |
gen_op_movl_A0_reg[R_EBX](); |
1316 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
1317 |
break;
|
1318 |
case 2: |
1319 |
gen_op_movl_A0_reg[R_EBP](); |
1320 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
1321 |
break;
|
1322 |
case 3: |
1323 |
gen_op_movl_A0_reg[R_EBP](); |
1324 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
1325 |
break;
|
1326 |
case 4: |
1327 |
gen_op_movl_A0_reg[R_ESI](); |
1328 |
break;
|
1329 |
case 5: |
1330 |
gen_op_movl_A0_reg[R_EDI](); |
1331 |
break;
|
1332 |
case 6: |
1333 |
gen_op_movl_A0_reg[R_EBP](); |
1334 |
break;
|
1335 |
default:
|
1336 |
case 7: |
1337 |
gen_op_movl_A0_reg[R_EBX](); |
1338 |
break;
|
1339 |
} |
1340 |
if (disp != 0) |
1341 |
gen_op_addl_A0_im(disp); |
1342 |
gen_op_andl_A0_ffff(); |
1343 |
no_rm:
|
1344 |
if (must_add_seg) {
|
1345 |
if (override < 0) { |
1346 |
if (rm == 2 || rm == 3 || rm == 6) |
1347 |
override = R_SS; |
1348 |
else
|
1349 |
override = R_DS; |
1350 |
} |
1351 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
1352 |
} |
1353 |
} |
1354 |
|
1355 |
opreg = OR_A0; |
1356 |
disp = 0;
|
1357 |
*reg_ptr = opreg; |
1358 |
*offset_ptr = disp; |
1359 |
} |
1360 |
|
1361 |
/* generate modrm memory load or store of 'reg'. TMP0 is used if reg !=
|
1362 |
OR_TMP0 */
|
1363 |
static void gen_ldst_modrm(DisasContext *s, int modrm, int ot, int reg, int is_store) |
1364 |
{ |
1365 |
int mod, rm, opreg, disp;
|
1366 |
|
1367 |
mod = (modrm >> 6) & 3; |
1368 |
rm = modrm & 7;
|
1369 |
if (mod == 3) { |
1370 |
if (is_store) {
|
1371 |
if (reg != OR_TMP0)
|
1372 |
gen_op_mov_TN_reg[ot][0][reg]();
|
1373 |
gen_op_mov_reg_T0[ot][rm](); |
1374 |
} else {
|
1375 |
gen_op_mov_TN_reg[ot][0][rm]();
|
1376 |
if (reg != OR_TMP0)
|
1377 |
gen_op_mov_reg_T0[ot][reg](); |
1378 |
} |
1379 |
} else {
|
1380 |
gen_lea_modrm(s, modrm, &opreg, &disp); |
1381 |
if (is_store) {
|
1382 |
if (reg != OR_TMP0)
|
1383 |
gen_op_mov_TN_reg[ot][0][reg]();
|
1384 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1385 |
} else {
|
1386 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
1387 |
if (reg != OR_TMP0)
|
1388 |
gen_op_mov_reg_T0[ot][reg](); |
1389 |
} |
1390 |
} |
1391 |
} |
1392 |
|
1393 |
static inline uint32_t insn_get(DisasContext *s, int ot) |
1394 |
{ |
1395 |
uint32_t ret; |
1396 |
|
1397 |
switch(ot) {
|
1398 |
case OT_BYTE:
|
1399 |
ret = ldub(s->pc); |
1400 |
s->pc++; |
1401 |
break;
|
1402 |
case OT_WORD:
|
1403 |
ret = lduw(s->pc); |
1404 |
s->pc += 2;
|
1405 |
break;
|
1406 |
default:
|
1407 |
case OT_LONG:
|
1408 |
ret = ldl(s->pc); |
1409 |
s->pc += 4;
|
1410 |
break;
|
1411 |
} |
1412 |
return ret;
|
1413 |
} |
1414 |
|
1415 |
static inline void gen_jcc(DisasContext *s, int b, int val, int next_eip) |
1416 |
{ |
1417 |
TranslationBlock *tb; |
1418 |
int inv, jcc_op;
|
1419 |
GenOpFunc3 *func; |
1420 |
|
1421 |
inv = b & 1;
|
1422 |
jcc_op = (b >> 1) & 7; |
1423 |
switch(s->cc_op) {
|
1424 |
/* we optimize the cmp/jcc case */
|
1425 |
case CC_OP_SUBB:
|
1426 |
case CC_OP_SUBW:
|
1427 |
case CC_OP_SUBL:
|
1428 |
func = gen_jcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
1429 |
break;
|
1430 |
|
1431 |
/* some jumps are easy to compute */
|
1432 |
case CC_OP_ADDB:
|
1433 |
case CC_OP_ADDW:
|
1434 |
case CC_OP_ADDL:
|
1435 |
case CC_OP_ADCB:
|
1436 |
case CC_OP_ADCW:
|
1437 |
case CC_OP_ADCL:
|
1438 |
case CC_OP_SBBB:
|
1439 |
case CC_OP_SBBW:
|
1440 |
case CC_OP_SBBL:
|
1441 |
case CC_OP_LOGICB:
|
1442 |
case CC_OP_LOGICW:
|
1443 |
case CC_OP_LOGICL:
|
1444 |
case CC_OP_INCB:
|
1445 |
case CC_OP_INCW:
|
1446 |
case CC_OP_INCL:
|
1447 |
case CC_OP_DECB:
|
1448 |
case CC_OP_DECW:
|
1449 |
case CC_OP_DECL:
|
1450 |
case CC_OP_SHLB:
|
1451 |
case CC_OP_SHLW:
|
1452 |
case CC_OP_SHLL:
|
1453 |
case CC_OP_SARB:
|
1454 |
case CC_OP_SARW:
|
1455 |
case CC_OP_SARL:
|
1456 |
switch(jcc_op) {
|
1457 |
case JCC_Z:
|
1458 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
1459 |
break;
|
1460 |
case JCC_S:
|
1461 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
1462 |
break;
|
1463 |
default:
|
1464 |
func = NULL;
|
1465 |
break;
|
1466 |
} |
1467 |
break;
|
1468 |
default:
|
1469 |
func = NULL;
|
1470 |
break;
|
1471 |
} |
1472 |
|
1473 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1474 |
gen_op_set_cc_op(s->cc_op); |
1475 |
|
1476 |
if (!func) {
|
1477 |
gen_setcc_slow[jcc_op](); |
1478 |
func = gen_op_jcc; |
1479 |
} |
1480 |
|
1481 |
tb = s->tb; |
1482 |
if (!inv) {
|
1483 |
func((long)tb, val, next_eip);
|
1484 |
} else {
|
1485 |
func((long)tb, next_eip, val);
|
1486 |
} |
1487 |
s->is_jmp = 3;
|
1488 |
} |
1489 |
|
1490 |
static void gen_setcc(DisasContext *s, int b) |
1491 |
{ |
1492 |
int inv, jcc_op;
|
1493 |
GenOpFunc *func; |
1494 |
|
1495 |
inv = b & 1;
|
1496 |
jcc_op = (b >> 1) & 7; |
1497 |
switch(s->cc_op) {
|
1498 |
/* we optimize the cmp/jcc case */
|
1499 |
case CC_OP_SUBB:
|
1500 |
case CC_OP_SUBW:
|
1501 |
case CC_OP_SUBL:
|
1502 |
func = gen_setcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
1503 |
if (!func)
|
1504 |
goto slow_jcc;
|
1505 |
break;
|
1506 |
|
1507 |
/* some jumps are easy to compute */
|
1508 |
case CC_OP_ADDB:
|
1509 |
case CC_OP_ADDW:
|
1510 |
case CC_OP_ADDL:
|
1511 |
case CC_OP_LOGICB:
|
1512 |
case CC_OP_LOGICW:
|
1513 |
case CC_OP_LOGICL:
|
1514 |
case CC_OP_INCB:
|
1515 |
case CC_OP_INCW:
|
1516 |
case CC_OP_INCL:
|
1517 |
case CC_OP_DECB:
|
1518 |
case CC_OP_DECW:
|
1519 |
case CC_OP_DECL:
|
1520 |
case CC_OP_SHLB:
|
1521 |
case CC_OP_SHLW:
|
1522 |
case CC_OP_SHLL:
|
1523 |
switch(jcc_op) {
|
1524 |
case JCC_Z:
|
1525 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
1526 |
break;
|
1527 |
case JCC_S:
|
1528 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
1529 |
break;
|
1530 |
default:
|
1531 |
goto slow_jcc;
|
1532 |
} |
1533 |
break;
|
1534 |
default:
|
1535 |
slow_jcc:
|
1536 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1537 |
gen_op_set_cc_op(s->cc_op); |
1538 |
func = gen_setcc_slow[jcc_op]; |
1539 |
break;
|
1540 |
} |
1541 |
func(); |
1542 |
if (inv) {
|
1543 |
gen_op_xor_T0_1(); |
1544 |
} |
1545 |
} |
1546 |
|
1547 |
/* move T0 to seg_reg and compute if the CPU state may change */
|
1548 |
static void gen_movl_seg_T0(DisasContext *s, int seg_reg, unsigned int cur_eip) |
1549 |
{ |
1550 |
if (s->pe && !s->vm86)
|
1551 |
gen_op_movl_seg_T0(seg_reg, cur_eip); |
1552 |
else
|
1553 |
gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[seg_reg])); |
1554 |
/* abort translation because the register may have a non zero base
|
1555 |
or because ss32 may change */
|
1556 |
if (seg_reg == R_SS || (!s->addseg && seg_reg < R_FS))
|
1557 |
s->is_jmp = 2;
|
1558 |
} |
1559 |
|
1560 |
/* generate a push. It depends on ss32, addseg and dflag */
|
1561 |
static void gen_push_T0(DisasContext *s) |
1562 |
{ |
1563 |
if (s->ss32) {
|
1564 |
if (!s->addseg) {
|
1565 |
if (s->dflag)
|
1566 |
gen_op_pushl_T0(); |
1567 |
else
|
1568 |
gen_op_pushw_T0(); |
1569 |
} else {
|
1570 |
if (s->dflag)
|
1571 |
gen_op_pushl_ss32_T0(); |
1572 |
else
|
1573 |
gen_op_pushw_ss32_T0(); |
1574 |
} |
1575 |
} else {
|
1576 |
if (s->dflag)
|
1577 |
gen_op_pushl_ss16_T0(); |
1578 |
else
|
1579 |
gen_op_pushw_ss16_T0(); |
1580 |
} |
1581 |
} |
1582 |
|
1583 |
/* two step pop is necessary for precise exceptions */
|
1584 |
static void gen_pop_T0(DisasContext *s) |
1585 |
{ |
1586 |
if (s->ss32) {
|
1587 |
if (!s->addseg) {
|
1588 |
if (s->dflag)
|
1589 |
gen_op_popl_T0(); |
1590 |
else
|
1591 |
gen_op_popw_T0(); |
1592 |
} else {
|
1593 |
if (s->dflag)
|
1594 |
gen_op_popl_ss32_T0(); |
1595 |
else
|
1596 |
gen_op_popw_ss32_T0(); |
1597 |
} |
1598 |
} else {
|
1599 |
if (s->dflag)
|
1600 |
gen_op_popl_ss16_T0(); |
1601 |
else
|
1602 |
gen_op_popw_ss16_T0(); |
1603 |
} |
1604 |
} |
1605 |
|
1606 |
static inline void gen_stack_update(DisasContext *s, int addend) |
1607 |
{ |
1608 |
if (s->ss32) {
|
1609 |
if (addend == 2) |
1610 |
gen_op_addl_ESP_2(); |
1611 |
else if (addend == 4) |
1612 |
gen_op_addl_ESP_4(); |
1613 |
else
|
1614 |
gen_op_addl_ESP_im(addend); |
1615 |
} else {
|
1616 |
if (addend == 2) |
1617 |
gen_op_addw_ESP_2(); |
1618 |
else if (addend == 4) |
1619 |
gen_op_addw_ESP_4(); |
1620 |
else
|
1621 |
gen_op_addw_ESP_im(addend); |
1622 |
} |
1623 |
} |
1624 |
|
1625 |
static void gen_pop_update(DisasContext *s) |
1626 |
{ |
1627 |
gen_stack_update(s, 2 << s->dflag);
|
1628 |
} |
1629 |
|
1630 |
static void gen_stack_A0(DisasContext *s) |
1631 |
{ |
1632 |
gen_op_movl_A0_ESP(); |
1633 |
if (!s->ss32)
|
1634 |
gen_op_andl_A0_ffff(); |
1635 |
gen_op_movl_T1_A0(); |
1636 |
if (s->addseg)
|
1637 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base)); |
1638 |
} |
1639 |
|
1640 |
/* NOTE: wrap around in 16 bit not fully handled */
|
1641 |
static void gen_pusha(DisasContext *s) |
1642 |
{ |
1643 |
int i;
|
1644 |
gen_op_movl_A0_ESP(); |
1645 |
gen_op_addl_A0_im(-16 << s->dflag);
|
1646 |
if (!s->ss32)
|
1647 |
gen_op_andl_A0_ffff(); |
1648 |
gen_op_movl_T1_A0(); |
1649 |
if (s->addseg)
|
1650 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base)); |
1651 |
for(i = 0;i < 8; i++) { |
1652 |
gen_op_mov_TN_reg[OT_LONG][0][7 - i](); |
1653 |
gen_op_st_T0_A0[OT_WORD + s->dflag + s->mem_index](); |
1654 |
gen_op_addl_A0_im(2 << s->dflag);
|
1655 |
} |
1656 |
gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP](); |
1657 |
} |
1658 |
|
1659 |
/* NOTE: wrap around in 16 bit not fully handled */
|
1660 |
static void gen_popa(DisasContext *s) |
1661 |
{ |
1662 |
int i;
|
1663 |
gen_op_movl_A0_ESP(); |
1664 |
if (!s->ss32)
|
1665 |
gen_op_andl_A0_ffff(); |
1666 |
gen_op_movl_T1_A0(); |
1667 |
gen_op_addl_T1_im(16 << s->dflag);
|
1668 |
if (s->addseg)
|
1669 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base)); |
1670 |
for(i = 0;i < 8; i++) { |
1671 |
/* ESP is not reloaded */
|
1672 |
if (i != 3) { |
1673 |
gen_op_ld_T0_A0[OT_WORD + s->dflag + s->mem_index](); |
1674 |
gen_op_mov_reg_T0[OT_WORD + s->dflag][7 - i]();
|
1675 |
} |
1676 |
gen_op_addl_A0_im(2 << s->dflag);
|
1677 |
} |
1678 |
gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP](); |
1679 |
} |
1680 |
|
1681 |
/* NOTE: wrap around in 16 bit not fully handled */
|
1682 |
/* XXX: check this */
|
1683 |
static void gen_enter(DisasContext *s, int esp_addend, int level) |
1684 |
{ |
1685 |
int ot, level1, addend, opsize;
|
1686 |
|
1687 |
ot = s->dflag + OT_WORD; |
1688 |
level &= 0x1f;
|
1689 |
level1 = level; |
1690 |
opsize = 2 << s->dflag;
|
1691 |
|
1692 |
gen_op_movl_A0_ESP(); |
1693 |
gen_op_addl_A0_im(-opsize); |
1694 |
if (!s->ss32)
|
1695 |
gen_op_andl_A0_ffff(); |
1696 |
gen_op_movl_T1_A0(); |
1697 |
if (s->addseg)
|
1698 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base)); |
1699 |
/* push bp */
|
1700 |
gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
|
1701 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1702 |
if (level) {
|
1703 |
while (level--) {
|
1704 |
gen_op_addl_A0_im(-opsize); |
1705 |
gen_op_addl_T0_im(-opsize); |
1706 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1707 |
} |
1708 |
gen_op_addl_A0_im(-opsize); |
1709 |
/* XXX: add st_T1_A0 ? */
|
1710 |
gen_op_movl_T0_T1(); |
1711 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1712 |
} |
1713 |
gen_op_mov_reg_T1[ot][R_EBP](); |
1714 |
addend = -esp_addend; |
1715 |
if (level1)
|
1716 |
addend -= opsize * (level1 + 1);
|
1717 |
gen_op_addl_T1_im(addend); |
1718 |
gen_op_mov_reg_T1[ot][R_ESP](); |
1719 |
} |
1720 |
|
1721 |
static void gen_exception(DisasContext *s, int trapno, unsigned int cur_eip) |
1722 |
{ |
1723 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1724 |
gen_op_set_cc_op(s->cc_op); |
1725 |
gen_op_jmp_im(cur_eip); |
1726 |
gen_op_raise_exception(trapno); |
1727 |
s->is_jmp = 1;
|
1728 |
} |
1729 |
|
1730 |
/* an interrupt is different from an exception because of the
|
1731 |
priviledge checks */
|
1732 |
static void gen_interrupt(DisasContext *s, int intno, |
1733 |
unsigned int cur_eip, unsigned int next_eip) |
1734 |
{ |
1735 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1736 |
gen_op_set_cc_op(s->cc_op); |
1737 |
gen_op_jmp_im(cur_eip); |
1738 |
gen_op_raise_interrupt(intno, next_eip); |
1739 |
s->is_jmp = 1;
|
1740 |
} |
1741 |
|
1742 |
static void gen_debug(DisasContext *s, unsigned int cur_eip) |
1743 |
{ |
1744 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1745 |
gen_op_set_cc_op(s->cc_op); |
1746 |
gen_op_jmp_im(cur_eip); |
1747 |
gen_op_debug(); |
1748 |
s->is_jmp = 1;
|
1749 |
} |
1750 |
|
1751 |
/* generate a jump to eip. No segment change must happen before as a
|
1752 |
direct call to the next block may occur */
|
1753 |
static void gen_jmp(DisasContext *s, unsigned int eip) |
1754 |
{ |
1755 |
TranslationBlock *tb = s->tb; |
1756 |
|
1757 |
if (s->cc_op != CC_OP_DYNAMIC)
|
1758 |
gen_op_set_cc_op(s->cc_op); |
1759 |
gen_op_jmp_tb_next((long)tb, eip);
|
1760 |
s->is_jmp = 3;
|
1761 |
} |
1762 |
|
1763 |
/* return the next pc address. Return -1 if no insn found. *is_jmp_ptr
|
1764 |
is set to true if the instruction sets the PC (last instruction of
|
1765 |
a basic block) */
|
1766 |
long disas_insn(DisasContext *s, uint8_t *pc_start)
|
1767 |
{ |
1768 |
int b, prefixes, aflag, dflag;
|
1769 |
int shift, ot;
|
1770 |
int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;
|
1771 |
unsigned int next_eip; |
1772 |
|
1773 |
s->pc = pc_start; |
1774 |
prefixes = 0;
|
1775 |
aflag = s->code32; |
1776 |
dflag = s->code32; |
1777 |
s->override = -1;
|
1778 |
next_byte:
|
1779 |
b = ldub(s->pc); |
1780 |
s->pc++; |
1781 |
/* check prefixes */
|
1782 |
switch (b) {
|
1783 |
case 0xf3: |
1784 |
prefixes |= PREFIX_REPZ; |
1785 |
goto next_byte;
|
1786 |
case 0xf2: |
1787 |
prefixes |= PREFIX_REPNZ; |
1788 |
goto next_byte;
|
1789 |
case 0xf0: |
1790 |
prefixes |= PREFIX_LOCK; |
1791 |
goto next_byte;
|
1792 |
case 0x2e: |
1793 |
s->override = R_CS; |
1794 |
goto next_byte;
|
1795 |
case 0x36: |
1796 |
s->override = R_SS; |
1797 |
goto next_byte;
|
1798 |
case 0x3e: |
1799 |
s->override = R_DS; |
1800 |
goto next_byte;
|
1801 |
case 0x26: |
1802 |
s->override = R_ES; |
1803 |
goto next_byte;
|
1804 |
case 0x64: |
1805 |
s->override = R_FS; |
1806 |
goto next_byte;
|
1807 |
case 0x65: |
1808 |
s->override = R_GS; |
1809 |
goto next_byte;
|
1810 |
case 0x66: |
1811 |
prefixes |= PREFIX_DATA; |
1812 |
goto next_byte;
|
1813 |
case 0x67: |
1814 |
prefixes |= PREFIX_ADR; |
1815 |
goto next_byte;
|
1816 |
} |
1817 |
|
1818 |
if (prefixes & PREFIX_DATA)
|
1819 |
dflag ^= 1;
|
1820 |
if (prefixes & PREFIX_ADR)
|
1821 |
aflag ^= 1;
|
1822 |
|
1823 |
s->prefix = prefixes; |
1824 |
s->aflag = aflag; |
1825 |
s->dflag = dflag; |
1826 |
|
1827 |
/* lock generation */
|
1828 |
if (prefixes & PREFIX_LOCK)
|
1829 |
gen_op_lock(); |
1830 |
|
1831 |
/* now check op code */
|
1832 |
reswitch:
|
1833 |
switch(b) {
|
1834 |
case 0x0f: |
1835 |
/**************************/
|
1836 |
/* extended op code */
|
1837 |
b = ldub(s->pc++) | 0x100;
|
1838 |
goto reswitch;
|
1839 |
|
1840 |
/**************************/
|
1841 |
/* arith & logic */
|
1842 |
case 0x00 ... 0x05: |
1843 |
case 0x08 ... 0x0d: |
1844 |
case 0x10 ... 0x15: |
1845 |
case 0x18 ... 0x1d: |
1846 |
case 0x20 ... 0x25: |
1847 |
case 0x28 ... 0x2d: |
1848 |
case 0x30 ... 0x35: |
1849 |
case 0x38 ... 0x3d: |
1850 |
{ |
1851 |
int op, f, val;
|
1852 |
op = (b >> 3) & 7; |
1853 |
f = (b >> 1) & 3; |
1854 |
|
1855 |
if ((b & 1) == 0) |
1856 |
ot = OT_BYTE; |
1857 |
else
|
1858 |
ot = dflag ? OT_LONG : OT_WORD; |
1859 |
|
1860 |
switch(f) {
|
1861 |
case 0: /* OP Ev, Gv */ |
1862 |
modrm = ldub(s->pc++); |
1863 |
reg = ((modrm >> 3) & 7); |
1864 |
mod = (modrm >> 6) & 3; |
1865 |
rm = modrm & 7;
|
1866 |
if (mod != 3) { |
1867 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
1868 |
opreg = OR_TMP0; |
1869 |
} else if (op == OP_XORL && rm == reg) { |
1870 |
xor_zero:
|
1871 |
/* xor reg, reg optimisation */
|
1872 |
gen_op_movl_T0_0(); |
1873 |
s->cc_op = CC_OP_LOGICB + ot; |
1874 |
gen_op_mov_reg_T0[ot][reg](); |
1875 |
gen_op_update1_cc(); |
1876 |
break;
|
1877 |
} else {
|
1878 |
opreg = rm; |
1879 |
} |
1880 |
gen_op_mov_TN_reg[ot][1][reg]();
|
1881 |
gen_op(s, op, ot, opreg); |
1882 |
break;
|
1883 |
case 1: /* OP Gv, Ev */ |
1884 |
modrm = ldub(s->pc++); |
1885 |
mod = (modrm >> 6) & 3; |
1886 |
reg = ((modrm >> 3) & 7); |
1887 |
rm = modrm & 7;
|
1888 |
if (mod != 3) { |
1889 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
1890 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
1891 |
} else if (op == OP_XORL && rm == reg) { |
1892 |
goto xor_zero;
|
1893 |
} else {
|
1894 |
gen_op_mov_TN_reg[ot][1][rm]();
|
1895 |
} |
1896 |
gen_op(s, op, ot, reg); |
1897 |
break;
|
1898 |
case 2: /* OP A, Iv */ |
1899 |
val = insn_get(s, ot); |
1900 |
gen_op_movl_T1_im(val); |
1901 |
gen_op(s, op, ot, OR_EAX); |
1902 |
break;
|
1903 |
} |
1904 |
} |
1905 |
break;
|
1906 |
|
1907 |
case 0x80: /* GRP1 */ |
1908 |
case 0x81: |
1909 |
case 0x83: |
1910 |
{ |
1911 |
int val;
|
1912 |
|
1913 |
if ((b & 1) == 0) |
1914 |
ot = OT_BYTE; |
1915 |
else
|
1916 |
ot = dflag ? OT_LONG : OT_WORD; |
1917 |
|
1918 |
modrm = ldub(s->pc++); |
1919 |
mod = (modrm >> 6) & 3; |
1920 |
rm = modrm & 7;
|
1921 |
op = (modrm >> 3) & 7; |
1922 |
|
1923 |
if (mod != 3) { |
1924 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
1925 |
opreg = OR_TMP0; |
1926 |
} else {
|
1927 |
opreg = rm + OR_EAX; |
1928 |
} |
1929 |
|
1930 |
switch(b) {
|
1931 |
default:
|
1932 |
case 0x80: |
1933 |
case 0x81: |
1934 |
val = insn_get(s, ot); |
1935 |
break;
|
1936 |
case 0x83: |
1937 |
val = (int8_t)insn_get(s, OT_BYTE); |
1938 |
break;
|
1939 |
} |
1940 |
gen_op_movl_T1_im(val); |
1941 |
gen_op(s, op, ot, opreg); |
1942 |
} |
1943 |
break;
|
1944 |
|
1945 |
/**************************/
|
1946 |
/* inc, dec, and other misc arith */
|
1947 |
case 0x40 ... 0x47: /* inc Gv */ |
1948 |
ot = dflag ? OT_LONG : OT_WORD; |
1949 |
gen_inc(s, ot, OR_EAX + (b & 7), 1); |
1950 |
break;
|
1951 |
case 0x48 ... 0x4f: /* dec Gv */ |
1952 |
ot = dflag ? OT_LONG : OT_WORD; |
1953 |
gen_inc(s, ot, OR_EAX + (b & 7), -1); |
1954 |
break;
|
1955 |
case 0xf6: /* GRP3 */ |
1956 |
case 0xf7: |
1957 |
if ((b & 1) == 0) |
1958 |
ot = OT_BYTE; |
1959 |
else
|
1960 |
ot = dflag ? OT_LONG : OT_WORD; |
1961 |
|
1962 |
modrm = ldub(s->pc++); |
1963 |
mod = (modrm >> 6) & 3; |
1964 |
rm = modrm & 7;
|
1965 |
op = (modrm >> 3) & 7; |
1966 |
if (mod != 3) { |
1967 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
1968 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
1969 |
} else {
|
1970 |
gen_op_mov_TN_reg[ot][0][rm]();
|
1971 |
} |
1972 |
|
1973 |
switch(op) {
|
1974 |
case 0: /* test */ |
1975 |
val = insn_get(s, ot); |
1976 |
gen_op_movl_T1_im(val); |
1977 |
gen_op_testl_T0_T1_cc(); |
1978 |
s->cc_op = CC_OP_LOGICB + ot; |
1979 |
break;
|
1980 |
case 2: /* not */ |
1981 |
gen_op_notl_T0(); |
1982 |
if (mod != 3) { |
1983 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1984 |
} else {
|
1985 |
gen_op_mov_reg_T0[ot][rm](); |
1986 |
} |
1987 |
break;
|
1988 |
case 3: /* neg */ |
1989 |
gen_op_negl_T0(); |
1990 |
if (mod != 3) { |
1991 |
gen_op_st_T0_A0[ot + s->mem_index](); |
1992 |
} else {
|
1993 |
gen_op_mov_reg_T0[ot][rm](); |
1994 |
} |
1995 |
gen_op_update_neg_cc(); |
1996 |
s->cc_op = CC_OP_SUBB + ot; |
1997 |
break;
|
1998 |
case 4: /* mul */ |
1999 |
switch(ot) {
|
2000 |
case OT_BYTE:
|
2001 |
gen_op_mulb_AL_T0(); |
2002 |
break;
|
2003 |
case OT_WORD:
|
2004 |
gen_op_mulw_AX_T0(); |
2005 |
break;
|
2006 |
default:
|
2007 |
case OT_LONG:
|
2008 |
gen_op_mull_EAX_T0(); |
2009 |
break;
|
2010 |
} |
2011 |
s->cc_op = CC_OP_MUL; |
2012 |
break;
|
2013 |
case 5: /* imul */ |
2014 |
switch(ot) {
|
2015 |
case OT_BYTE:
|
2016 |
gen_op_imulb_AL_T0(); |
2017 |
break;
|
2018 |
case OT_WORD:
|
2019 |
gen_op_imulw_AX_T0(); |
2020 |
break;
|
2021 |
default:
|
2022 |
case OT_LONG:
|
2023 |
gen_op_imull_EAX_T0(); |
2024 |
break;
|
2025 |
} |
2026 |
s->cc_op = CC_OP_MUL; |
2027 |
break;
|
2028 |
case 6: /* div */ |
2029 |
switch(ot) {
|
2030 |
case OT_BYTE:
|
2031 |
gen_op_divb_AL_T0(pc_start - s->cs_base); |
2032 |
break;
|
2033 |
case OT_WORD:
|
2034 |
gen_op_divw_AX_T0(pc_start - s->cs_base); |
2035 |
break;
|
2036 |
default:
|
2037 |
case OT_LONG:
|
2038 |
gen_op_divl_EAX_T0(pc_start - s->cs_base); |
2039 |
break;
|
2040 |
} |
2041 |
break;
|
2042 |
case 7: /* idiv */ |
2043 |
switch(ot) {
|
2044 |
case OT_BYTE:
|
2045 |
gen_op_idivb_AL_T0(pc_start - s->cs_base); |
2046 |
break;
|
2047 |
case OT_WORD:
|
2048 |
gen_op_idivw_AX_T0(pc_start - s->cs_base); |
2049 |
break;
|
2050 |
default:
|
2051 |
case OT_LONG:
|
2052 |
gen_op_idivl_EAX_T0(pc_start - s->cs_base); |
2053 |
break;
|
2054 |
} |
2055 |
break;
|
2056 |
default:
|
2057 |
goto illegal_op;
|
2058 |
} |
2059 |
break;
|
2060 |
|
2061 |
case 0xfe: /* GRP4 */ |
2062 |
case 0xff: /* GRP5 */ |
2063 |
if ((b & 1) == 0) |
2064 |
ot = OT_BYTE; |
2065 |
else
|
2066 |
ot = dflag ? OT_LONG : OT_WORD; |
2067 |
|
2068 |
modrm = ldub(s->pc++); |
2069 |
mod = (modrm >> 6) & 3; |
2070 |
rm = modrm & 7;
|
2071 |
op = (modrm >> 3) & 7; |
2072 |
if (op >= 2 && b == 0xfe) { |
2073 |
goto illegal_op;
|
2074 |
} |
2075 |
if (mod != 3) { |
2076 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2077 |
if (op >= 2 && op != 3 && op != 5) |
2078 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
2079 |
} else {
|
2080 |
gen_op_mov_TN_reg[ot][0][rm]();
|
2081 |
} |
2082 |
|
2083 |
switch(op) {
|
2084 |
case 0: /* inc Ev */ |
2085 |
if (mod != 3) |
2086 |
opreg = OR_TMP0; |
2087 |
else
|
2088 |
opreg = rm; |
2089 |
gen_inc(s, ot, opreg, 1);
|
2090 |
break;
|
2091 |
case 1: /* dec Ev */ |
2092 |
if (mod != 3) |
2093 |
opreg = OR_TMP0; |
2094 |
else
|
2095 |
opreg = rm; |
2096 |
gen_inc(s, ot, opreg, -1);
|
2097 |
break;
|
2098 |
case 2: /* call Ev */ |
2099 |
/* XXX: optimize if memory (no and is necessary) */
|
2100 |
if (s->dflag == 0) |
2101 |
gen_op_andl_T0_ffff(); |
2102 |
gen_op_jmp_T0(); |
2103 |
next_eip = s->pc - s->cs_base; |
2104 |
gen_op_movl_T0_im(next_eip); |
2105 |
gen_push_T0(s); |
2106 |
s->is_jmp = 1;
|
2107 |
break;
|
2108 |
case 3: /* lcall Ev */ |
2109 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
2110 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
2111 |
gen_op_ld_T0_A0[OT_WORD + s->mem_index](); |
2112 |
do_lcall:
|
2113 |
if (s->pe && !s->vm86) {
|
2114 |
if (s->cc_op != CC_OP_DYNAMIC)
|
2115 |
gen_op_set_cc_op(s->cc_op); |
2116 |
gen_op_jmp_im(pc_start - s->cs_base); |
2117 |
gen_op_lcall_protected_T0_T1(dflag, s->pc - s->cs_base); |
2118 |
} else {
|
2119 |
gen_op_lcall_real_T0_T1(dflag, s->pc - s->cs_base); |
2120 |
} |
2121 |
s->is_jmp = 1;
|
2122 |
break;
|
2123 |
case 4: /* jmp Ev */ |
2124 |
if (s->dflag == 0) |
2125 |
gen_op_andl_T0_ffff(); |
2126 |
gen_op_jmp_T0(); |
2127 |
s->is_jmp = 1;
|
2128 |
break;
|
2129 |
case 5: /* ljmp Ev */ |
2130 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
2131 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
2132 |
gen_op_lduw_T0_A0(); |
2133 |
do_ljmp:
|
2134 |
if (s->pe && !s->vm86) {
|
2135 |
if (s->cc_op != CC_OP_DYNAMIC)
|
2136 |
gen_op_set_cc_op(s->cc_op); |
2137 |
gen_op_jmp_im(pc_start - s->cs_base); |
2138 |
gen_op_ljmp_protected_T0_T1(); |
2139 |
} else {
|
2140 |
gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[R_CS])); |
2141 |
gen_op_movl_T0_T1(); |
2142 |
gen_op_jmp_T0(); |
2143 |
} |
2144 |
s->is_jmp = 1;
|
2145 |
break;
|
2146 |
case 6: /* push Ev */ |
2147 |
gen_push_T0(s); |
2148 |
break;
|
2149 |
default:
|
2150 |
goto illegal_op;
|
2151 |
} |
2152 |
break;
|
2153 |
|
2154 |
case 0x84: /* test Ev, Gv */ |
2155 |
case 0x85: |
2156 |
if ((b & 1) == 0) |
2157 |
ot = OT_BYTE; |
2158 |
else
|
2159 |
ot = dflag ? OT_LONG : OT_WORD; |
2160 |
|
2161 |
modrm = ldub(s->pc++); |
2162 |
mod = (modrm >> 6) & 3; |
2163 |
rm = modrm & 7;
|
2164 |
reg = (modrm >> 3) & 7; |
2165 |
|
2166 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
2167 |
gen_op_mov_TN_reg[ot][1][reg + OR_EAX]();
|
2168 |
gen_op_testl_T0_T1_cc(); |
2169 |
s->cc_op = CC_OP_LOGICB + ot; |
2170 |
break;
|
2171 |
|
2172 |
case 0xa8: /* test eAX, Iv */ |
2173 |
case 0xa9: |
2174 |
if ((b & 1) == 0) |
2175 |
ot = OT_BYTE; |
2176 |
else
|
2177 |
ot = dflag ? OT_LONG : OT_WORD; |
2178 |
val = insn_get(s, ot); |
2179 |
|
2180 |
gen_op_mov_TN_reg[ot][0][OR_EAX]();
|
2181 |
gen_op_movl_T1_im(val); |
2182 |
gen_op_testl_T0_T1_cc(); |
2183 |
s->cc_op = CC_OP_LOGICB + ot; |
2184 |
break;
|
2185 |
|
2186 |
case 0x98: /* CWDE/CBW */ |
2187 |
if (dflag)
|
2188 |
gen_op_movswl_EAX_AX(); |
2189 |
else
|
2190 |
gen_op_movsbw_AX_AL(); |
2191 |
break;
|
2192 |
case 0x99: /* CDQ/CWD */ |
2193 |
if (dflag)
|
2194 |
gen_op_movslq_EDX_EAX(); |
2195 |
else
|
2196 |
gen_op_movswl_DX_AX(); |
2197 |
break;
|
2198 |
case 0x1af: /* imul Gv, Ev */ |
2199 |
case 0x69: /* imul Gv, Ev, I */ |
2200 |
case 0x6b: |
2201 |
ot = dflag ? OT_LONG : OT_WORD; |
2202 |
modrm = ldub(s->pc++); |
2203 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
2204 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
2205 |
if (b == 0x69) { |
2206 |
val = insn_get(s, ot); |
2207 |
gen_op_movl_T1_im(val); |
2208 |
} else if (b == 0x6b) { |
2209 |
val = insn_get(s, OT_BYTE); |
2210 |
gen_op_movl_T1_im(val); |
2211 |
} else {
|
2212 |
gen_op_mov_TN_reg[ot][1][reg]();
|
2213 |
} |
2214 |
|
2215 |
if (ot == OT_LONG) {
|
2216 |
gen_op_imull_T0_T1(); |
2217 |
} else {
|
2218 |
gen_op_imulw_T0_T1(); |
2219 |
} |
2220 |
gen_op_mov_reg_T0[ot][reg](); |
2221 |
s->cc_op = CC_OP_MUL; |
2222 |
break;
|
2223 |
case 0x1c0: |
2224 |
case 0x1c1: /* xadd Ev, Gv */ |
2225 |
if ((b & 1) == 0) |
2226 |
ot = OT_BYTE; |
2227 |
else
|
2228 |
ot = dflag ? OT_LONG : OT_WORD; |
2229 |
modrm = ldub(s->pc++); |
2230 |
reg = (modrm >> 3) & 7; |
2231 |
mod = (modrm >> 6) & 3; |
2232 |
if (mod == 3) { |
2233 |
rm = modrm & 7;
|
2234 |
gen_op_mov_TN_reg[ot][0][reg]();
|
2235 |
gen_op_mov_TN_reg[ot][1][rm]();
|
2236 |
gen_op_addl_T0_T1(); |
2237 |
gen_op_mov_reg_T0[ot][rm](); |
2238 |
gen_op_mov_reg_T1[ot][reg](); |
2239 |
} else {
|
2240 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2241 |
gen_op_mov_TN_reg[ot][0][reg]();
|
2242 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
2243 |
gen_op_addl_T0_T1(); |
2244 |
gen_op_st_T0_A0[ot + s->mem_index](); |
2245 |
gen_op_mov_reg_T1[ot][reg](); |
2246 |
} |
2247 |
gen_op_update2_cc(); |
2248 |
s->cc_op = CC_OP_ADDB + ot; |
2249 |
break;
|
2250 |
case 0x1b0: |
2251 |
case 0x1b1: /* cmpxchg Ev, Gv */ |
2252 |
if ((b & 1) == 0) |
2253 |
ot = OT_BYTE; |
2254 |
else
|
2255 |
ot = dflag ? OT_LONG : OT_WORD; |
2256 |
modrm = ldub(s->pc++); |
2257 |
reg = (modrm >> 3) & 7; |
2258 |
mod = (modrm >> 6) & 3; |
2259 |
gen_op_mov_TN_reg[ot][1][reg]();
|
2260 |
if (mod == 3) { |
2261 |
rm = modrm & 7;
|
2262 |
gen_op_mov_TN_reg[ot][0][rm]();
|
2263 |
gen_op_cmpxchg_T0_T1_EAX_cc[ot](); |
2264 |
gen_op_mov_reg_T0[ot][rm](); |
2265 |
} else {
|
2266 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2267 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
2268 |
gen_op_cmpxchg_mem_T0_T1_EAX_cc[ot](); |
2269 |
} |
2270 |
s->cc_op = CC_OP_SUBB + ot; |
2271 |
break;
|
2272 |
case 0x1c7: /* cmpxchg8b */ |
2273 |
modrm = ldub(s->pc++); |
2274 |
mod = (modrm >> 6) & 3; |
2275 |
if (mod == 3) |
2276 |
goto illegal_op;
|
2277 |
if (s->cc_op != CC_OP_DYNAMIC)
|
2278 |
gen_op_set_cc_op(s->cc_op); |
2279 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2280 |
gen_op_cmpxchg8b(); |
2281 |
s->cc_op = CC_OP_EFLAGS; |
2282 |
break;
|
2283 |
|
2284 |
/**************************/
|
2285 |
/* push/pop */
|
2286 |
case 0x50 ... 0x57: /* push */ |
2287 |
gen_op_mov_TN_reg[OT_LONG][0][b & 7](); |
2288 |
gen_push_T0(s); |
2289 |
break;
|
2290 |
case 0x58 ... 0x5f: /* pop */ |
2291 |
ot = dflag ? OT_LONG : OT_WORD; |
2292 |
gen_pop_T0(s); |
2293 |
gen_op_mov_reg_T0[ot][b & 7]();
|
2294 |
gen_pop_update(s); |
2295 |
break;
|
2296 |
case 0x60: /* pusha */ |
2297 |
gen_pusha(s); |
2298 |
break;
|
2299 |
case 0x61: /* popa */ |
2300 |
gen_popa(s); |
2301 |
break;
|
2302 |
case 0x68: /* push Iv */ |
2303 |
case 0x6a: |
2304 |
ot = dflag ? OT_LONG : OT_WORD; |
2305 |
if (b == 0x68) |
2306 |
val = insn_get(s, ot); |
2307 |
else
|
2308 |
val = (int8_t)insn_get(s, OT_BYTE); |
2309 |
gen_op_movl_T0_im(val); |
2310 |
gen_push_T0(s); |
2311 |
break;
|
2312 |
case 0x8f: /* pop Ev */ |
2313 |
ot = dflag ? OT_LONG : OT_WORD; |
2314 |
modrm = ldub(s->pc++); |
2315 |
gen_pop_T0(s); |
2316 |
s->popl_esp_hack = 2 << dflag;
|
2317 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
2318 |
s->popl_esp_hack = 0;
|
2319 |
gen_pop_update(s); |
2320 |
break;
|
2321 |
case 0xc8: /* enter */ |
2322 |
{ |
2323 |
int level;
|
2324 |
val = lduw(s->pc); |
2325 |
s->pc += 2;
|
2326 |
level = ldub(s->pc++); |
2327 |
gen_enter(s, val, level); |
2328 |
} |
2329 |
break;
|
2330 |
case 0xc9: /* leave */ |
2331 |
/* XXX: exception not precise (ESP is updated before potential exception) */
|
2332 |
if (s->ss32) {
|
2333 |
gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
|
2334 |
gen_op_mov_reg_T0[OT_LONG][R_ESP](); |
2335 |
} else {
|
2336 |
gen_op_mov_TN_reg[OT_WORD][0][R_EBP]();
|
2337 |
gen_op_mov_reg_T0[OT_WORD][R_ESP](); |
2338 |
} |
2339 |
gen_pop_T0(s); |
2340 |
ot = dflag ? OT_LONG : OT_WORD; |
2341 |
gen_op_mov_reg_T0[ot][R_EBP](); |
2342 |
gen_pop_update(s); |
2343 |
break;
|
2344 |
case 0x06: /* push es */ |
2345 |
case 0x0e: /* push cs */ |
2346 |
case 0x16: /* push ss */ |
2347 |
case 0x1e: /* push ds */ |
2348 |
gen_op_movl_T0_seg(b >> 3);
|
2349 |
gen_push_T0(s); |
2350 |
break;
|
2351 |
case 0x1a0: /* push fs */ |
2352 |
case 0x1a8: /* push gs */ |
2353 |
gen_op_movl_T0_seg((b >> 3) & 7); |
2354 |
gen_push_T0(s); |
2355 |
break;
|
2356 |
case 0x07: /* pop es */ |
2357 |
case 0x17: /* pop ss */ |
2358 |
case 0x1f: /* pop ds */ |
2359 |
gen_pop_T0(s); |
2360 |
gen_movl_seg_T0(s, b >> 3, pc_start - s->cs_base);
|
2361 |
gen_pop_update(s); |
2362 |
/* XXX: if reg == SS, inhibit interrupts/trace */
|
2363 |
break;
|
2364 |
case 0x1a1: /* pop fs */ |
2365 |
case 0x1a9: /* pop gs */ |
2366 |
gen_pop_T0(s); |
2367 |
gen_movl_seg_T0(s, (b >> 3) & 7, pc_start - s->cs_base); |
2368 |
gen_pop_update(s); |
2369 |
break;
|
2370 |
|
2371 |
/**************************/
|
2372 |
/* mov */
|
2373 |
case 0x88: |
2374 |
case 0x89: /* mov Gv, Ev */ |
2375 |
if ((b & 1) == 0) |
2376 |
ot = OT_BYTE; |
2377 |
else
|
2378 |
ot = dflag ? OT_LONG : OT_WORD; |
2379 |
modrm = ldub(s->pc++); |
2380 |
reg = (modrm >> 3) & 7; |
2381 |
|
2382 |
/* generate a generic store */
|
2383 |
gen_ldst_modrm(s, modrm, ot, OR_EAX + reg, 1);
|
2384 |
break;
|
2385 |
case 0xc6: |
2386 |
case 0xc7: /* mov Ev, Iv */ |
2387 |
if ((b & 1) == 0) |
2388 |
ot = OT_BYTE; |
2389 |
else
|
2390 |
ot = dflag ? OT_LONG : OT_WORD; |
2391 |
modrm = ldub(s->pc++); |
2392 |
mod = (modrm >> 6) & 3; |
2393 |
if (mod != 3) |
2394 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2395 |
val = insn_get(s, ot); |
2396 |
gen_op_movl_T0_im(val); |
2397 |
if (mod != 3) |
2398 |
gen_op_st_T0_A0[ot + s->mem_index](); |
2399 |
else
|
2400 |
gen_op_mov_reg_T0[ot][modrm & 7]();
|
2401 |
break;
|
2402 |
case 0x8a: |
2403 |
case 0x8b: /* mov Ev, Gv */ |
2404 |
if ((b & 1) == 0) |
2405 |
ot = OT_BYTE; |
2406 |
else
|
2407 |
ot = dflag ? OT_LONG : OT_WORD; |
2408 |
modrm = ldub(s->pc++); |
2409 |
reg = (modrm >> 3) & 7; |
2410 |
|
2411 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
2412 |
gen_op_mov_reg_T0[ot][reg](); |
2413 |
break;
|
2414 |
case 0x8e: /* mov seg, Gv */ |
2415 |
modrm = ldub(s->pc++); |
2416 |
reg = (modrm >> 3) & 7; |
2417 |
if (reg >= 6 || reg == R_CS) |
2418 |
goto illegal_op;
|
2419 |
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
|
2420 |
gen_movl_seg_T0(s, reg, pc_start - s->cs_base); |
2421 |
/* XXX: if reg == SS, inhibit interrupts/trace */
|
2422 |
break;
|
2423 |
case 0x8c: /* mov Gv, seg */ |
2424 |
modrm = ldub(s->pc++); |
2425 |
reg = (modrm >> 3) & 7; |
2426 |
mod = (modrm >> 6) & 3; |
2427 |
if (reg >= 6) |
2428 |
goto illegal_op;
|
2429 |
gen_op_movl_T0_seg(reg); |
2430 |
ot = OT_WORD; |
2431 |
if (mod == 3 && dflag) |
2432 |
ot = OT_LONG; |
2433 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
2434 |
break;
|
2435 |
|
2436 |
case 0x1b6: /* movzbS Gv, Eb */ |
2437 |
case 0x1b7: /* movzwS Gv, Eb */ |
2438 |
case 0x1be: /* movsbS Gv, Eb */ |
2439 |
case 0x1bf: /* movswS Gv, Eb */ |
2440 |
{ |
2441 |
int d_ot;
|
2442 |
/* d_ot is the size of destination */
|
2443 |
d_ot = dflag + OT_WORD; |
2444 |
/* ot is the size of source */
|
2445 |
ot = (b & 1) + OT_BYTE;
|
2446 |
modrm = ldub(s->pc++); |
2447 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
2448 |
mod = (modrm >> 6) & 3; |
2449 |
rm = modrm & 7;
|
2450 |
|
2451 |
if (mod == 3) { |
2452 |
gen_op_mov_TN_reg[ot][0][rm]();
|
2453 |
switch(ot | (b & 8)) { |
2454 |
case OT_BYTE:
|
2455 |
gen_op_movzbl_T0_T0(); |
2456 |
break;
|
2457 |
case OT_BYTE | 8: |
2458 |
gen_op_movsbl_T0_T0(); |
2459 |
break;
|
2460 |
case OT_WORD:
|
2461 |
gen_op_movzwl_T0_T0(); |
2462 |
break;
|
2463 |
default:
|
2464 |
case OT_WORD | 8: |
2465 |
gen_op_movswl_T0_T0(); |
2466 |
break;
|
2467 |
} |
2468 |
gen_op_mov_reg_T0[d_ot][reg](); |
2469 |
} else {
|
2470 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2471 |
if (b & 8) { |
2472 |
gen_op_lds_T0_A0[ot + s->mem_index](); |
2473 |
} else {
|
2474 |
gen_op_ldu_T0_A0[ot + s->mem_index](); |
2475 |
} |
2476 |
gen_op_mov_reg_T0[d_ot][reg](); |
2477 |
} |
2478 |
} |
2479 |
break;
|
2480 |
|
2481 |
case 0x8d: /* lea */ |
2482 |
ot = dflag ? OT_LONG : OT_WORD; |
2483 |
modrm = ldub(s->pc++); |
2484 |
reg = (modrm >> 3) & 7; |
2485 |
/* we must ensure that no segment is added */
|
2486 |
s->override = -1;
|
2487 |
val = s->addseg; |
2488 |
s->addseg = 0;
|
2489 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2490 |
s->addseg = val; |
2491 |
gen_op_mov_reg_A0[ot - OT_WORD][reg](); |
2492 |
break;
|
2493 |
|
2494 |
case 0xa0: /* mov EAX, Ov */ |
2495 |
case 0xa1: |
2496 |
case 0xa2: /* mov Ov, EAX */ |
2497 |
case 0xa3: |
2498 |
if ((b & 1) == 0) |
2499 |
ot = OT_BYTE; |
2500 |
else
|
2501 |
ot = dflag ? OT_LONG : OT_WORD; |
2502 |
if (s->aflag)
|
2503 |
offset_addr = insn_get(s, OT_LONG); |
2504 |
else
|
2505 |
offset_addr = insn_get(s, OT_WORD); |
2506 |
gen_op_movl_A0_im(offset_addr); |
2507 |
/* handle override */
|
2508 |
{ |
2509 |
int override, must_add_seg;
|
2510 |
must_add_seg = s->addseg; |
2511 |
if (s->override >= 0) { |
2512 |
override = s->override; |
2513 |
must_add_seg = 1;
|
2514 |
} else {
|
2515 |
override = R_DS; |
2516 |
} |
2517 |
if (must_add_seg) {
|
2518 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
2519 |
} |
2520 |
} |
2521 |
if ((b & 2) == 0) { |
2522 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
2523 |
gen_op_mov_reg_T0[ot][R_EAX](); |
2524 |
} else {
|
2525 |
gen_op_mov_TN_reg[ot][0][R_EAX]();
|
2526 |
gen_op_st_T0_A0[ot + s->mem_index](); |
2527 |
} |
2528 |
break;
|
2529 |
case 0xd7: /* xlat */ |
2530 |
gen_op_movl_A0_reg[R_EBX](); |
2531 |
gen_op_addl_A0_AL(); |
2532 |
if (s->aflag == 0) |
2533 |
gen_op_andl_A0_ffff(); |
2534 |
/* handle override */
|
2535 |
{ |
2536 |
int override, must_add_seg;
|
2537 |
must_add_seg = s->addseg; |
2538 |
override = R_DS; |
2539 |
if (s->override >= 0) { |
2540 |
override = s->override; |
2541 |
must_add_seg = 1;
|
2542 |
} else {
|
2543 |
override = R_DS; |
2544 |
} |
2545 |
if (must_add_seg) {
|
2546 |
gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base)); |
2547 |
} |
2548 |
} |
2549 |
gen_op_ldu_T0_A0[OT_BYTE + s->mem_index](); |
2550 |
gen_op_mov_reg_T0[OT_BYTE][R_EAX](); |
2551 |
break;
|
2552 |
case 0xb0 ... 0xb7: /* mov R, Ib */ |
2553 |
val = insn_get(s, OT_BYTE); |
2554 |
gen_op_movl_T0_im(val); |
2555 |
gen_op_mov_reg_T0[OT_BYTE][b & 7]();
|
2556 |
break;
|
2557 |
case 0xb8 ... 0xbf: /* mov R, Iv */ |
2558 |
ot = dflag ? OT_LONG : OT_WORD; |
2559 |
val = insn_get(s, ot); |
2560 |
reg = OR_EAX + (b & 7);
|
2561 |
gen_op_movl_T0_im(val); |
2562 |
gen_op_mov_reg_T0[ot][reg](); |
2563 |
break;
|
2564 |
|
2565 |
case 0x91 ... 0x97: /* xchg R, EAX */ |
2566 |
ot = dflag ? OT_LONG : OT_WORD; |
2567 |
reg = b & 7;
|
2568 |
rm = R_EAX; |
2569 |
goto do_xchg_reg;
|
2570 |
case 0x86: |
2571 |
case 0x87: /* xchg Ev, Gv */ |
2572 |
if ((b & 1) == 0) |
2573 |
ot = OT_BYTE; |
2574 |
else
|
2575 |
ot = dflag ? OT_LONG : OT_WORD; |
2576 |
modrm = ldub(s->pc++); |
2577 |
reg = (modrm >> 3) & 7; |
2578 |
mod = (modrm >> 6) & 3; |
2579 |
if (mod == 3) { |
2580 |
rm = modrm & 7;
|
2581 |
do_xchg_reg:
|
2582 |
gen_op_mov_TN_reg[ot][0][reg]();
|
2583 |
gen_op_mov_TN_reg[ot][1][rm]();
|
2584 |
gen_op_mov_reg_T0[ot][rm](); |
2585 |
gen_op_mov_reg_T1[ot][reg](); |
2586 |
} else {
|
2587 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2588 |
gen_op_mov_TN_reg[ot][0][reg]();
|
2589 |
/* for xchg, lock is implicit */
|
2590 |
if (!(prefixes & PREFIX_LOCK))
|
2591 |
gen_op_lock(); |
2592 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
2593 |
gen_op_st_T0_A0[ot + s->mem_index](); |
2594 |
if (!(prefixes & PREFIX_LOCK))
|
2595 |
gen_op_unlock(); |
2596 |
gen_op_mov_reg_T1[ot][reg](); |
2597 |
} |
2598 |
break;
|
2599 |
case 0xc4: /* les Gv */ |
2600 |
op = R_ES; |
2601 |
goto do_lxx;
|
2602 |
case 0xc5: /* lds Gv */ |
2603 |
op = R_DS; |
2604 |
goto do_lxx;
|
2605 |
case 0x1b2: /* lss Gv */ |
2606 |
op = R_SS; |
2607 |
goto do_lxx;
|
2608 |
case 0x1b4: /* lfs Gv */ |
2609 |
op = R_FS; |
2610 |
goto do_lxx;
|
2611 |
case 0x1b5: /* lgs Gv */ |
2612 |
op = R_GS; |
2613 |
do_lxx:
|
2614 |
ot = dflag ? OT_LONG : OT_WORD; |
2615 |
modrm = ldub(s->pc++); |
2616 |
reg = (modrm >> 3) & 7; |
2617 |
mod = (modrm >> 6) & 3; |
2618 |
if (mod == 3) |
2619 |
goto illegal_op;
|
2620 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2621 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
2622 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
2623 |
/* load the segment first to handle exceptions properly */
|
2624 |
gen_op_lduw_T0_A0(); |
2625 |
gen_movl_seg_T0(s, op, pc_start - s->cs_base); |
2626 |
/* then put the data */
|
2627 |
gen_op_mov_reg_T1[ot][reg](); |
2628 |
break;
|
2629 |
|
2630 |
/************************/
|
2631 |
/* shifts */
|
2632 |
case 0xc0: |
2633 |
case 0xc1: |
2634 |
/* shift Ev,Ib */
|
2635 |
shift = 2;
|
2636 |
grp2:
|
2637 |
{ |
2638 |
if ((b & 1) == 0) |
2639 |
ot = OT_BYTE; |
2640 |
else
|
2641 |
ot = dflag ? OT_LONG : OT_WORD; |
2642 |
|
2643 |
modrm = ldub(s->pc++); |
2644 |
mod = (modrm >> 6) & 3; |
2645 |
rm = modrm & 7;
|
2646 |
op = (modrm >> 3) & 7; |
2647 |
|
2648 |
if (mod != 3) { |
2649 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2650 |
opreg = OR_TMP0; |
2651 |
} else {
|
2652 |
opreg = rm + OR_EAX; |
2653 |
} |
2654 |
|
2655 |
/* simpler op */
|
2656 |
if (shift == 0) { |
2657 |
gen_shift(s, op, ot, opreg, OR_ECX); |
2658 |
} else {
|
2659 |
if (shift == 2) { |
2660 |
shift = ldub(s->pc++); |
2661 |
} |
2662 |
gen_shifti(s, op, ot, opreg, shift); |
2663 |
} |
2664 |
} |
2665 |
break;
|
2666 |
case 0xd0: |
2667 |
case 0xd1: |
2668 |
/* shift Ev,1 */
|
2669 |
shift = 1;
|
2670 |
goto grp2;
|
2671 |
case 0xd2: |
2672 |
case 0xd3: |
2673 |
/* shift Ev,cl */
|
2674 |
shift = 0;
|
2675 |
goto grp2;
|
2676 |
|
2677 |
case 0x1a4: /* shld imm */ |
2678 |
op = 0;
|
2679 |
shift = 1;
|
2680 |
goto do_shiftd;
|
2681 |
case 0x1a5: /* shld cl */ |
2682 |
op = 0;
|
2683 |
shift = 0;
|
2684 |
goto do_shiftd;
|
2685 |
case 0x1ac: /* shrd imm */ |
2686 |
op = 1;
|
2687 |
shift = 1;
|
2688 |
goto do_shiftd;
|
2689 |
case 0x1ad: /* shrd cl */ |
2690 |
op = 1;
|
2691 |
shift = 0;
|
2692 |
do_shiftd:
|
2693 |
ot = dflag ? OT_LONG : OT_WORD; |
2694 |
modrm = ldub(s->pc++); |
2695 |
mod = (modrm >> 6) & 3; |
2696 |
rm = modrm & 7;
|
2697 |
reg = (modrm >> 3) & 7; |
2698 |
|
2699 |
if (mod != 3) { |
2700 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2701 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
2702 |
} else {
|
2703 |
gen_op_mov_TN_reg[ot][0][rm]();
|
2704 |
} |
2705 |
gen_op_mov_TN_reg[ot][1][reg]();
|
2706 |
|
2707 |
if (shift) {
|
2708 |
val = ldub(s->pc++); |
2709 |
val &= 0x1f;
|
2710 |
if (val) {
|
2711 |
if (mod == 3) |
2712 |
gen_op_shiftd_T0_T1_im_cc[ot - OT_WORD][op](val); |
2713 |
else
|
2714 |
gen_op_shiftd_mem_T0_T1_im_cc[ot - OT_WORD][op](val); |
2715 |
if (op == 0 && ot != OT_WORD) |
2716 |
s->cc_op = CC_OP_SHLB + ot; |
2717 |
else
|
2718 |
s->cc_op = CC_OP_SARB + ot; |
2719 |
} |
2720 |
} else {
|
2721 |
if (s->cc_op != CC_OP_DYNAMIC)
|
2722 |
gen_op_set_cc_op(s->cc_op); |
2723 |
if (mod == 3) |
2724 |
gen_op_shiftd_T0_T1_ECX_cc[ot - OT_WORD][op](); |
2725 |
else
|
2726 |
gen_op_shiftd_mem_T0_T1_ECX_cc[ot - OT_WORD][op](); |
2727 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
2728 |
} |
2729 |
if (mod == 3) { |
2730 |
gen_op_mov_reg_T0[ot][rm](); |
2731 |
} |
2732 |
break;
|
2733 |
|
2734 |
/************************/
|
2735 |
/* floats */
|
2736 |
case 0xd8 ... 0xdf: |
2737 |
modrm = ldub(s->pc++); |
2738 |
mod = (modrm >> 6) & 3; |
2739 |
rm = modrm & 7;
|
2740 |
op = ((b & 7) << 3) | ((modrm >> 3) & 7); |
2741 |
|
2742 |
if (mod != 3) { |
2743 |
/* memory op */
|
2744 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
2745 |
switch(op) {
|
2746 |
case 0x00 ... 0x07: /* fxxxs */ |
2747 |
case 0x10 ... 0x17: /* fixxxl */ |
2748 |
case 0x20 ... 0x27: /* fxxxl */ |
2749 |
case 0x30 ... 0x37: /* fixxx */ |
2750 |
{ |
2751 |
int op1;
|
2752 |
op1 = op & 7;
|
2753 |
|
2754 |
switch(op >> 4) { |
2755 |
case 0: |
2756 |
gen_op_flds_FT0_A0(); |
2757 |
break;
|
2758 |
case 1: |
2759 |
gen_op_fildl_FT0_A0(); |
2760 |
break;
|
2761 |
case 2: |
2762 |
gen_op_fldl_FT0_A0(); |
2763 |
break;
|
2764 |
case 3: |
2765 |
default:
|
2766 |
gen_op_fild_FT0_A0(); |
2767 |
break;
|
2768 |
} |
2769 |
|
2770 |
gen_op_fp_arith_ST0_FT0[op1](); |
2771 |
if (op1 == 3) { |
2772 |
/* fcomp needs pop */
|
2773 |
gen_op_fpop(); |
2774 |
} |
2775 |
} |
2776 |
break;
|
2777 |
case 0x08: /* flds */ |
2778 |
case 0x0a: /* fsts */ |
2779 |
case 0x0b: /* fstps */ |
2780 |
case 0x18: /* fildl */ |
2781 |
case 0x1a: /* fistl */ |
2782 |
case 0x1b: /* fistpl */ |
2783 |
case 0x28: /* fldl */ |
2784 |
case 0x2a: /* fstl */ |
2785 |
case 0x2b: /* fstpl */ |
2786 |
case 0x38: /* filds */ |
2787 |
case 0x3a: /* fists */ |
2788 |
case 0x3b: /* fistps */ |
2789 |
|
2790 |
switch(op & 7) { |
2791 |
case 0: |
2792 |
switch(op >> 4) { |
2793 |
case 0: |
2794 |
gen_op_flds_ST0_A0(); |
2795 |
break;
|
2796 |
case 1: |
2797 |
gen_op_fildl_ST0_A0(); |
2798 |
break;
|
2799 |
case 2: |
2800 |
gen_op_fldl_ST0_A0(); |
2801 |
break;
|
2802 |
case 3: |
2803 |
default:
|
2804 |
gen_op_fild_ST0_A0(); |
2805 |
break;
|
2806 |
} |
2807 |
break;
|
2808 |
default:
|
2809 |
switch(op >> 4) { |
2810 |
case 0: |
2811 |
gen_op_fsts_ST0_A0(); |
2812 |
break;
|
2813 |
case 1: |
2814 |
gen_op_fistl_ST0_A0(); |
2815 |
break;
|
2816 |
case 2: |
2817 |
gen_op_fstl_ST0_A0(); |
2818 |
break;
|
2819 |
case 3: |
2820 |
default:
|
2821 |
gen_op_fist_ST0_A0(); |
2822 |
break;
|
2823 |
} |
2824 |
if ((op & 7) == 3) |
2825 |
gen_op_fpop(); |
2826 |
break;
|
2827 |
} |
2828 |
break;
|
2829 |
case 0x0c: /* fldenv mem */ |
2830 |
gen_op_fldenv_A0(s->dflag); |
2831 |
break;
|
2832 |
case 0x0d: /* fldcw mem */ |
2833 |
gen_op_fldcw_A0(); |
2834 |
break;
|
2835 |
case 0x0e: /* fnstenv mem */ |
2836 |
gen_op_fnstenv_A0(s->dflag); |
2837 |
break;
|
2838 |
case 0x0f: /* fnstcw mem */ |
2839 |
gen_op_fnstcw_A0(); |
2840 |
break;
|
2841 |
case 0x1d: /* fldt mem */ |
2842 |
gen_op_fldt_ST0_A0(); |
2843 |
break;
|
2844 |
case 0x1f: /* fstpt mem */ |
2845 |
gen_op_fstt_ST0_A0(); |
2846 |
gen_op_fpop(); |
2847 |
break;
|
2848 |
case 0x2c: /* frstor mem */ |
2849 |
gen_op_frstor_A0(s->dflag); |
2850 |
break;
|
2851 |
case 0x2e: /* fnsave mem */ |
2852 |
gen_op_fnsave_A0(s->dflag); |
2853 |
break;
|
2854 |
case 0x2f: /* fnstsw mem */ |
2855 |
gen_op_fnstsw_A0(); |
2856 |
break;
|
2857 |
case 0x3c: /* fbld */ |
2858 |
gen_op_fbld_ST0_A0(); |
2859 |
break;
|
2860 |
case 0x3e: /* fbstp */ |
2861 |
gen_op_fbst_ST0_A0(); |
2862 |
gen_op_fpop(); |
2863 |
break;
|
2864 |
case 0x3d: /* fildll */ |
2865 |
gen_op_fildll_ST0_A0(); |
2866 |
break;
|
2867 |
case 0x3f: /* fistpll */ |
2868 |
gen_op_fistll_ST0_A0(); |
2869 |
gen_op_fpop(); |
2870 |
break;
|
2871 |
default:
|
2872 |
goto illegal_op;
|
2873 |
} |
2874 |
} else {
|
2875 |
/* register float ops */
|
2876 |
opreg = rm; |
2877 |
|
2878 |
switch(op) {
|
2879 |
case 0x08: /* fld sti */ |
2880 |
gen_op_fpush(); |
2881 |
gen_op_fmov_ST0_STN((opreg + 1) & 7); |
2882 |
break;
|
2883 |
case 0x09: /* fxchg sti */ |
2884 |
gen_op_fxchg_ST0_STN(opreg); |
2885 |
break;
|
2886 |
case 0x0a: /* grp d9/2 */ |
2887 |
switch(rm) {
|
2888 |
case 0: /* fnop */ |
2889 |
break;
|
2890 |
default:
|
2891 |
goto illegal_op;
|
2892 |
} |
2893 |
break;
|
2894 |
case 0x0c: /* grp d9/4 */ |
2895 |
switch(rm) {
|
2896 |
case 0: /* fchs */ |
2897 |
gen_op_fchs_ST0(); |
2898 |
break;
|
2899 |
case 1: /* fabs */ |
2900 |
gen_op_fabs_ST0(); |
2901 |
break;
|
2902 |
case 4: /* ftst */ |
2903 |
gen_op_fldz_FT0(); |
2904 |
gen_op_fcom_ST0_FT0(); |
2905 |
break;
|
2906 |
case 5: /* fxam */ |
2907 |
gen_op_fxam_ST0(); |
2908 |
break;
|
2909 |
default:
|
2910 |
goto illegal_op;
|
2911 |
} |
2912 |
break;
|
2913 |
case 0x0d: /* grp d9/5 */ |
2914 |
{ |
2915 |
switch(rm) {
|
2916 |
case 0: |
2917 |
gen_op_fpush(); |
2918 |
gen_op_fld1_ST0(); |
2919 |
break;
|
2920 |
case 1: |
2921 |
gen_op_fpush(); |
2922 |
gen_op_fldl2t_ST0(); |
2923 |
break;
|
2924 |
case 2: |
2925 |
gen_op_fpush(); |
2926 |
gen_op_fldl2e_ST0(); |
2927 |
break;
|
2928 |
case 3: |
2929 |
gen_op_fpush(); |
2930 |
gen_op_fldpi_ST0(); |
2931 |
break;
|
2932 |
case 4: |
2933 |
gen_op_fpush(); |
2934 |
gen_op_fldlg2_ST0(); |
2935 |
break;
|
2936 |
case 5: |
2937 |
gen_op_fpush(); |
2938 |
gen_op_fldln2_ST0(); |
2939 |
break;
|
2940 |
case 6: |
2941 |
gen_op_fpush(); |
2942 |
gen_op_fldz_ST0(); |
2943 |
break;
|
2944 |
default:
|
2945 |
goto illegal_op;
|
2946 |
} |
2947 |
} |
2948 |
break;
|
2949 |
case 0x0e: /* grp d9/6 */ |
2950 |
switch(rm) {
|
2951 |
case 0: /* f2xm1 */ |
2952 |
gen_op_f2xm1(); |
2953 |
break;
|
2954 |
case 1: /* fyl2x */ |
2955 |
gen_op_fyl2x(); |
2956 |
break;
|
2957 |
case 2: /* fptan */ |
2958 |
gen_op_fptan(); |
2959 |
break;
|
2960 |
case 3: /* fpatan */ |
2961 |
gen_op_fpatan(); |
2962 |
break;
|
2963 |
case 4: /* fxtract */ |
2964 |
gen_op_fxtract(); |
2965 |
break;
|
2966 |
case 5: /* fprem1 */ |
2967 |
gen_op_fprem1(); |
2968 |
break;
|
2969 |
case 6: /* fdecstp */ |
2970 |
gen_op_fdecstp(); |
2971 |
break;
|
2972 |
default:
|
2973 |
case 7: /* fincstp */ |
2974 |
gen_op_fincstp(); |
2975 |
break;
|
2976 |
} |
2977 |
break;
|
2978 |
case 0x0f: /* grp d9/7 */ |
2979 |
switch(rm) {
|
2980 |
case 0: /* fprem */ |
2981 |
gen_op_fprem(); |
2982 |
break;
|
2983 |
case 1: /* fyl2xp1 */ |
2984 |
gen_op_fyl2xp1(); |
2985 |
break;
|
2986 |
case 2: /* fsqrt */ |
2987 |
gen_op_fsqrt(); |
2988 |
break;
|
2989 |
case 3: /* fsincos */ |
2990 |
gen_op_fsincos(); |
2991 |
break;
|
2992 |
case 5: /* fscale */ |
2993 |
gen_op_fscale(); |
2994 |
break;
|
2995 |
case 4: /* frndint */ |
2996 |
gen_op_frndint(); |
2997 |
break;
|
2998 |
case 6: /* fsin */ |
2999 |
gen_op_fsin(); |
3000 |
break;
|
3001 |
default:
|
3002 |
case 7: /* fcos */ |
3003 |
gen_op_fcos(); |
3004 |
break;
|
3005 |
} |
3006 |
break;
|
3007 |
case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */ |
3008 |
case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */ |
3009 |
case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */ |
3010 |
{ |
3011 |
int op1;
|
3012 |
|
3013 |
op1 = op & 7;
|
3014 |
if (op >= 0x20) { |
3015 |
gen_op_fp_arith_STN_ST0[op1](opreg); |
3016 |
if (op >= 0x30) |
3017 |
gen_op_fpop(); |
3018 |
} else {
|
3019 |
gen_op_fmov_FT0_STN(opreg); |
3020 |
gen_op_fp_arith_ST0_FT0[op1](); |
3021 |
} |
3022 |
} |
3023 |
break;
|
3024 |
case 0x02: /* fcom */ |
3025 |
gen_op_fmov_FT0_STN(opreg); |
3026 |
gen_op_fcom_ST0_FT0(); |
3027 |
break;
|
3028 |
case 0x03: /* fcomp */ |
3029 |
gen_op_fmov_FT0_STN(opreg); |
3030 |
gen_op_fcom_ST0_FT0(); |
3031 |
gen_op_fpop(); |
3032 |
break;
|
3033 |
case 0x15: /* da/5 */ |
3034 |
switch(rm) {
|
3035 |
case 1: /* fucompp */ |
3036 |
gen_op_fmov_FT0_STN(1);
|
3037 |
gen_op_fucom_ST0_FT0(); |
3038 |
gen_op_fpop(); |
3039 |
gen_op_fpop(); |
3040 |
break;
|
3041 |
default:
|
3042 |
goto illegal_op;
|
3043 |
} |
3044 |
break;
|
3045 |
case 0x1c: |
3046 |
switch(rm) {
|
3047 |
case 0: /* feni (287 only, just do nop here) */ |
3048 |
break;
|
3049 |
case 1: /* fdisi (287 only, just do nop here) */ |
3050 |
break;
|
3051 |
case 2: /* fclex */ |
3052 |
gen_op_fclex(); |
3053 |
break;
|
3054 |
case 3: /* fninit */ |
3055 |
gen_op_fninit(); |
3056 |
break;
|
3057 |
case 4: /* fsetpm (287 only, just do nop here) */ |
3058 |
break;
|
3059 |
default:
|
3060 |
goto illegal_op;
|
3061 |
} |
3062 |
break;
|
3063 |
case 0x1d: /* fucomi */ |
3064 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3065 |
gen_op_set_cc_op(s->cc_op); |
3066 |
gen_op_fmov_FT0_STN(opreg); |
3067 |
gen_op_fucomi_ST0_FT0(); |
3068 |
s->cc_op = CC_OP_EFLAGS; |
3069 |
break;
|
3070 |
case 0x1e: /* fcomi */ |
3071 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3072 |
gen_op_set_cc_op(s->cc_op); |
3073 |
gen_op_fmov_FT0_STN(opreg); |
3074 |
gen_op_fcomi_ST0_FT0(); |
3075 |
s->cc_op = CC_OP_EFLAGS; |
3076 |
break;
|
3077 |
case 0x2a: /* fst sti */ |
3078 |
gen_op_fmov_STN_ST0(opreg); |
3079 |
break;
|
3080 |
case 0x2b: /* fstp sti */ |
3081 |
gen_op_fmov_STN_ST0(opreg); |
3082 |
gen_op_fpop(); |
3083 |
break;
|
3084 |
case 0x2c: /* fucom st(i) */ |
3085 |
gen_op_fmov_FT0_STN(opreg); |
3086 |
gen_op_fucom_ST0_FT0(); |
3087 |
break;
|
3088 |
case 0x2d: /* fucomp st(i) */ |
3089 |
gen_op_fmov_FT0_STN(opreg); |
3090 |
gen_op_fucom_ST0_FT0(); |
3091 |
gen_op_fpop(); |
3092 |
break;
|
3093 |
case 0x33: /* de/3 */ |
3094 |
switch(rm) {
|
3095 |
case 1: /* fcompp */ |
3096 |
gen_op_fmov_FT0_STN(1);
|
3097 |
gen_op_fcom_ST0_FT0(); |
3098 |
gen_op_fpop(); |
3099 |
gen_op_fpop(); |
3100 |
break;
|
3101 |
default:
|
3102 |
goto illegal_op;
|
3103 |
} |
3104 |
break;
|
3105 |
case 0x3c: /* df/4 */ |
3106 |
switch(rm) {
|
3107 |
case 0: |
3108 |
gen_op_fnstsw_EAX(); |
3109 |
break;
|
3110 |
default:
|
3111 |
goto illegal_op;
|
3112 |
} |
3113 |
break;
|
3114 |
case 0x3d: /* fucomip */ |
3115 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3116 |
gen_op_set_cc_op(s->cc_op); |
3117 |
gen_op_fmov_FT0_STN(opreg); |
3118 |
gen_op_fucomi_ST0_FT0(); |
3119 |
gen_op_fpop(); |
3120 |
s->cc_op = CC_OP_EFLAGS; |
3121 |
break;
|
3122 |
case 0x3e: /* fcomip */ |
3123 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3124 |
gen_op_set_cc_op(s->cc_op); |
3125 |
gen_op_fmov_FT0_STN(opreg); |
3126 |
gen_op_fcomi_ST0_FT0(); |
3127 |
gen_op_fpop(); |
3128 |
s->cc_op = CC_OP_EFLAGS; |
3129 |
break;
|
3130 |
default:
|
3131 |
goto illegal_op;
|
3132 |
} |
3133 |
} |
3134 |
break;
|
3135 |
/************************/
|
3136 |
/* string ops */
|
3137 |
|
3138 |
case 0xa4: /* movsS */ |
3139 |
case 0xa5: |
3140 |
if ((b & 1) == 0) |
3141 |
ot = OT_BYTE; |
3142 |
else
|
3143 |
ot = dflag ? OT_LONG : OT_WORD; |
3144 |
|
3145 |
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
3146 |
gen_repz_movs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base); |
3147 |
} else {
|
3148 |
gen_movs(s, ot); |
3149 |
} |
3150 |
break;
|
3151 |
|
3152 |
case 0xaa: /* stosS */ |
3153 |
case 0xab: |
3154 |
if ((b & 1) == 0) |
3155 |
ot = OT_BYTE; |
3156 |
else
|
3157 |
ot = dflag ? OT_LONG : OT_WORD; |
3158 |
|
3159 |
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
3160 |
gen_repz_stos(s, ot, pc_start - s->cs_base, s->pc - s->cs_base); |
3161 |
} else {
|
3162 |
gen_stos(s, ot); |
3163 |
} |
3164 |
break;
|
3165 |
case 0xac: /* lodsS */ |
3166 |
case 0xad: |
3167 |
if ((b & 1) == 0) |
3168 |
ot = OT_BYTE; |
3169 |
else
|
3170 |
ot = dflag ? OT_LONG : OT_WORD; |
3171 |
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
3172 |
gen_repz_lods(s, ot, pc_start - s->cs_base, s->pc - s->cs_base); |
3173 |
} else {
|
3174 |
gen_lods(s, ot); |
3175 |
} |
3176 |
break;
|
3177 |
case 0xae: /* scasS */ |
3178 |
case 0xaf: |
3179 |
if ((b & 1) == 0) |
3180 |
ot = OT_BYTE; |
3181 |
else
|
3182 |
ot = dflag ? OT_LONG : OT_WORD; |
3183 |
if (prefixes & PREFIX_REPNZ) {
|
3184 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3185 |
gen_op_set_cc_op(s->cc_op); |
3186 |
gen_string_es(s, ot, gen_op_scas + STRINGOP_NB); |
3187 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
3188 |
} else if (prefixes & PREFIX_REPZ) { |
3189 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3190 |
gen_op_set_cc_op(s->cc_op); |
3191 |
gen_string_es(s, ot, gen_op_scas); |
3192 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
3193 |
} else {
|
3194 |
gen_scas(s, ot); |
3195 |
s->cc_op = CC_OP_SUBB + ot; |
3196 |
} |
3197 |
break;
|
3198 |
|
3199 |
case 0xa6: /* cmpsS */ |
3200 |
case 0xa7: |
3201 |
if ((b & 1) == 0) |
3202 |
ot = OT_BYTE; |
3203 |
else
|
3204 |
ot = dflag ? OT_LONG : OT_WORD; |
3205 |
if (prefixes & PREFIX_REPNZ) {
|
3206 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3207 |
gen_op_set_cc_op(s->cc_op); |
3208 |
gen_string_ds(s, ot, gen_op_cmps + STRINGOP_NB); |
3209 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
3210 |
} else if (prefixes & PREFIX_REPZ) { |
3211 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3212 |
gen_op_set_cc_op(s->cc_op); |
3213 |
gen_string_ds(s, ot, gen_op_cmps); |
3214 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
3215 |
} else {
|
3216 |
gen_cmps(s, ot); |
3217 |
s->cc_op = CC_OP_SUBB + ot; |
3218 |
} |
3219 |
break;
|
3220 |
case 0x6c: /* insS */ |
3221 |
case 0x6d: |
3222 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3223 |
/* NOTE: even for (E)CX = 0 the exception is raised */
|
3224 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3225 |
} else {
|
3226 |
if ((b & 1) == 0) |
3227 |
ot = OT_BYTE; |
3228 |
else
|
3229 |
ot = dflag ? OT_LONG : OT_WORD; |
3230 |
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
3231 |
gen_repz_ins(s, ot, pc_start - s->cs_base, s->pc - s->cs_base); |
3232 |
} else {
|
3233 |
gen_ins(s, ot); |
3234 |
} |
3235 |
} |
3236 |
break;
|
3237 |
case 0x6e: /* outsS */ |
3238 |
case 0x6f: |
3239 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3240 |
/* NOTE: even for (E)CX = 0 the exception is raised */
|
3241 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3242 |
} else {
|
3243 |
if ((b & 1) == 0) |
3244 |
ot = OT_BYTE; |
3245 |
else
|
3246 |
ot = dflag ? OT_LONG : OT_WORD; |
3247 |
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
3248 |
gen_repz_outs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base); |
3249 |
} else {
|
3250 |
gen_outs(s, ot); |
3251 |
} |
3252 |
} |
3253 |
break;
|
3254 |
|
3255 |
/************************/
|
3256 |
/* port I/O */
|
3257 |
case 0xe4: |
3258 |
case 0xe5: |
3259 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3260 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3261 |
} else {
|
3262 |
if ((b & 1) == 0) |
3263 |
ot = OT_BYTE; |
3264 |
else
|
3265 |
ot = dflag ? OT_LONG : OT_WORD; |
3266 |
val = ldub(s->pc++); |
3267 |
gen_op_movl_T0_im(val); |
3268 |
gen_op_in[ot](); |
3269 |
gen_op_mov_reg_T1[ot][R_EAX](); |
3270 |
} |
3271 |
break;
|
3272 |
case 0xe6: |
3273 |
case 0xe7: |
3274 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3275 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3276 |
} else {
|
3277 |
if ((b & 1) == 0) |
3278 |
ot = OT_BYTE; |
3279 |
else
|
3280 |
ot = dflag ? OT_LONG : OT_WORD; |
3281 |
val = ldub(s->pc++); |
3282 |
gen_op_movl_T0_im(val); |
3283 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
3284 |
gen_op_out[ot](); |
3285 |
} |
3286 |
break;
|
3287 |
case 0xec: |
3288 |
case 0xed: |
3289 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3290 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3291 |
} else {
|
3292 |
if ((b & 1) == 0) |
3293 |
ot = OT_BYTE; |
3294 |
else
|
3295 |
ot = dflag ? OT_LONG : OT_WORD; |
3296 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
3297 |
gen_op_in[ot](); |
3298 |
gen_op_mov_reg_T1[ot][R_EAX](); |
3299 |
} |
3300 |
break;
|
3301 |
case 0xee: |
3302 |
case 0xef: |
3303 |
if (s->pe && (s->cpl > s->iopl || s->vm86)) {
|
3304 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3305 |
} else {
|
3306 |
if ((b & 1) == 0) |
3307 |
ot = OT_BYTE; |
3308 |
else
|
3309 |
ot = dflag ? OT_LONG : OT_WORD; |
3310 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
3311 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
3312 |
gen_op_out[ot](); |
3313 |
} |
3314 |
break;
|
3315 |
|
3316 |
/************************/
|
3317 |
/* control */
|
3318 |
case 0xc2: /* ret im */ |
3319 |
val = ldsw(s->pc); |
3320 |
s->pc += 2;
|
3321 |
gen_pop_T0(s); |
3322 |
gen_stack_update(s, val + (2 << s->dflag));
|
3323 |
if (s->dflag == 0) |
3324 |
gen_op_andl_T0_ffff(); |
3325 |
gen_op_jmp_T0(); |
3326 |
s->is_jmp = 1;
|
3327 |
break;
|
3328 |
case 0xc3: /* ret */ |
3329 |
gen_pop_T0(s); |
3330 |
gen_pop_update(s); |
3331 |
if (s->dflag == 0) |
3332 |
gen_op_andl_T0_ffff(); |
3333 |
gen_op_jmp_T0(); |
3334 |
s->is_jmp = 1;
|
3335 |
break;
|
3336 |
case 0xca: /* lret im */ |
3337 |
val = ldsw(s->pc); |
3338 |
s->pc += 2;
|
3339 |
do_lret:
|
3340 |
if (s->pe && !s->vm86) {
|
3341 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3342 |
gen_op_set_cc_op(s->cc_op); |
3343 |
gen_op_jmp_im(pc_start - s->cs_base); |
3344 |
gen_op_lret_protected(s->dflag, val); |
3345 |
} else {
|
3346 |
gen_stack_A0(s); |
3347 |
/* pop offset */
|
3348 |
gen_op_ld_T0_A0[1 + s->dflag + s->mem_index]();
|
3349 |
if (s->dflag == 0) |
3350 |
gen_op_andl_T0_ffff(); |
3351 |
/* NOTE: keeping EIP updated is not a problem in case of
|
3352 |
exception */
|
3353 |
gen_op_jmp_T0(); |
3354 |
/* pop selector */
|
3355 |
gen_op_addl_A0_im(2 << s->dflag);
|
3356 |
gen_op_ld_T0_A0[1 + s->dflag + s->mem_index]();
|
3357 |
gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[R_CS])); |
3358 |
/* add stack offset */
|
3359 |
gen_stack_update(s, val + (4 << s->dflag));
|
3360 |
} |
3361 |
s->is_jmp = 1;
|
3362 |
break;
|
3363 |
case 0xcb: /* lret */ |
3364 |
val = 0;
|
3365 |
goto do_lret;
|
3366 |
case 0xcf: /* iret */ |
3367 |
if (!s->pe) {
|
3368 |
/* real mode */
|
3369 |
gen_op_iret_real(s->dflag); |
3370 |
s->cc_op = CC_OP_EFLAGS; |
3371 |
} else if (s->vm86 && s->iopl != 3) { |
3372 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3373 |
} else {
|
3374 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3375 |
gen_op_set_cc_op(s->cc_op); |
3376 |
gen_op_jmp_im(pc_start - s->cs_base); |
3377 |
gen_op_iret_protected(s->dflag); |
3378 |
s->cc_op = CC_OP_EFLAGS; |
3379 |
} |
3380 |
s->is_jmp = 1;
|
3381 |
break;
|
3382 |
case 0xe8: /* call im */ |
3383 |
{ |
3384 |
unsigned int next_eip; |
3385 |
ot = dflag ? OT_LONG : OT_WORD; |
3386 |
val = insn_get(s, ot); |
3387 |
next_eip = s->pc - s->cs_base; |
3388 |
val += next_eip; |
3389 |
if (s->dflag == 0) |
3390 |
val &= 0xffff;
|
3391 |
gen_op_movl_T0_im(next_eip); |
3392 |
gen_push_T0(s); |
3393 |
gen_jmp(s, val); |
3394 |
} |
3395 |
break;
|
3396 |
case 0x9a: /* lcall im */ |
3397 |
{ |
3398 |
unsigned int selector, offset; |
3399 |
|
3400 |
ot = dflag ? OT_LONG : OT_WORD; |
3401 |
offset = insn_get(s, ot); |
3402 |
selector = insn_get(s, OT_WORD); |
3403 |
|
3404 |
gen_op_movl_T0_im(selector); |
3405 |
gen_op_movl_T1_im(offset); |
3406 |
} |
3407 |
goto do_lcall;
|
3408 |
case 0xe9: /* jmp */ |
3409 |
ot = dflag ? OT_LONG : OT_WORD; |
3410 |
val = insn_get(s, ot); |
3411 |
val += s->pc - s->cs_base; |
3412 |
if (s->dflag == 0) |
3413 |
val = val & 0xffff;
|
3414 |
gen_jmp(s, val); |
3415 |
break;
|
3416 |
case 0xea: /* ljmp im */ |
3417 |
{ |
3418 |
unsigned int selector, offset; |
3419 |
|
3420 |
ot = dflag ? OT_LONG : OT_WORD; |
3421 |
offset = insn_get(s, ot); |
3422 |
selector = insn_get(s, OT_WORD); |
3423 |
|
3424 |
gen_op_movl_T0_im(selector); |
3425 |
gen_op_movl_T1_im(offset); |
3426 |
} |
3427 |
goto do_ljmp;
|
3428 |
case 0xeb: /* jmp Jb */ |
3429 |
val = (int8_t)insn_get(s, OT_BYTE); |
3430 |
val += s->pc - s->cs_base; |
3431 |
if (s->dflag == 0) |
3432 |
val = val & 0xffff;
|
3433 |
gen_jmp(s, val); |
3434 |
break;
|
3435 |
case 0x70 ... 0x7f: /* jcc Jb */ |
3436 |
val = (int8_t)insn_get(s, OT_BYTE); |
3437 |
goto do_jcc;
|
3438 |
case 0x180 ... 0x18f: /* jcc Jv */ |
3439 |
if (dflag) {
|
3440 |
val = insn_get(s, OT_LONG); |
3441 |
} else {
|
3442 |
val = (int16_t)insn_get(s, OT_WORD); |
3443 |
} |
3444 |
do_jcc:
|
3445 |
next_eip = s->pc - s->cs_base; |
3446 |
val += next_eip; |
3447 |
if (s->dflag == 0) |
3448 |
val &= 0xffff;
|
3449 |
gen_jcc(s, b, val, next_eip); |
3450 |
break;
|
3451 |
|
3452 |
case 0x190 ... 0x19f: /* setcc Gv */ |
3453 |
modrm = ldub(s->pc++); |
3454 |
gen_setcc(s, b); |
3455 |
gen_ldst_modrm(s, modrm, OT_BYTE, OR_TMP0, 1);
|
3456 |
break;
|
3457 |
case 0x140 ... 0x14f: /* cmov Gv, Ev */ |
3458 |
ot = dflag ? OT_LONG : OT_WORD; |
3459 |
modrm = ldub(s->pc++); |
3460 |
reg = (modrm >> 3) & 7; |
3461 |
mod = (modrm >> 6) & 3; |
3462 |
gen_setcc(s, b); |
3463 |
if (mod != 3) { |
3464 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3465 |
gen_op_ld_T1_A0[ot + s->mem_index](); |
3466 |
} else {
|
3467 |
rm = modrm & 7;
|
3468 |
gen_op_mov_TN_reg[ot][1][rm]();
|
3469 |
} |
3470 |
gen_op_cmov_reg_T1_T0[ot - OT_WORD][reg](); |
3471 |
break;
|
3472 |
|
3473 |
/************************/
|
3474 |
/* flags */
|
3475 |
case 0x9c: /* pushf */ |
3476 |
if (s->vm86 && s->iopl != 3) { |
3477 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3478 |
} else {
|
3479 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3480 |
gen_op_set_cc_op(s->cc_op); |
3481 |
gen_op_movl_T0_eflags(); |
3482 |
gen_push_T0(s); |
3483 |
} |
3484 |
break;
|
3485 |
case 0x9d: /* popf */ |
3486 |
if (s->vm86 && s->iopl != 3) { |
3487 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3488 |
} else {
|
3489 |
gen_pop_T0(s); |
3490 |
if (s->cpl == 0) { |
3491 |
if (s->dflag) {
|
3492 |
gen_op_movl_eflags_T0_cpl0(); |
3493 |
} else {
|
3494 |
gen_op_movw_eflags_T0_cpl0(); |
3495 |
} |
3496 |
} else {
|
3497 |
if (s->dflag) {
|
3498 |
gen_op_movl_eflags_T0(); |
3499 |
} else {
|
3500 |
gen_op_movw_eflags_T0(); |
3501 |
} |
3502 |
} |
3503 |
gen_pop_update(s); |
3504 |
s->cc_op = CC_OP_EFLAGS; |
3505 |
s->is_jmp = 2; /* abort translation because TF flag may change */ |
3506 |
} |
3507 |
break;
|
3508 |
case 0x9e: /* sahf */ |
3509 |
gen_op_mov_TN_reg[OT_BYTE][0][R_AH]();
|
3510 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3511 |
gen_op_set_cc_op(s->cc_op); |
3512 |
gen_op_movb_eflags_T0(); |
3513 |
s->cc_op = CC_OP_EFLAGS; |
3514 |
break;
|
3515 |
case 0x9f: /* lahf */ |
3516 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3517 |
gen_op_set_cc_op(s->cc_op); |
3518 |
gen_op_movl_T0_eflags(); |
3519 |
gen_op_mov_reg_T0[OT_BYTE][R_AH](); |
3520 |
break;
|
3521 |
case 0xf5: /* cmc */ |
3522 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3523 |
gen_op_set_cc_op(s->cc_op); |
3524 |
gen_op_cmc(); |
3525 |
s->cc_op = CC_OP_EFLAGS; |
3526 |
break;
|
3527 |
case 0xf8: /* clc */ |
3528 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3529 |
gen_op_set_cc_op(s->cc_op); |
3530 |
gen_op_clc(); |
3531 |
s->cc_op = CC_OP_EFLAGS; |
3532 |
break;
|
3533 |
case 0xf9: /* stc */ |
3534 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3535 |
gen_op_set_cc_op(s->cc_op); |
3536 |
gen_op_stc(); |
3537 |
s->cc_op = CC_OP_EFLAGS; |
3538 |
break;
|
3539 |
case 0xfc: /* cld */ |
3540 |
gen_op_cld(); |
3541 |
break;
|
3542 |
case 0xfd: /* std */ |
3543 |
gen_op_std(); |
3544 |
break;
|
3545 |
|
3546 |
/************************/
|
3547 |
/* bit operations */
|
3548 |
case 0x1ba: /* bt/bts/btr/btc Gv, im */ |
3549 |
ot = dflag ? OT_LONG : OT_WORD; |
3550 |
modrm = ldub(s->pc++); |
3551 |
op = (modrm >> 3) & 7; |
3552 |
mod = (modrm >> 6) & 3; |
3553 |
rm = modrm & 7;
|
3554 |
if (mod != 3) { |
3555 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3556 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
3557 |
} else {
|
3558 |
gen_op_mov_TN_reg[ot][0][rm]();
|
3559 |
} |
3560 |
/* load shift */
|
3561 |
val = ldub(s->pc++); |
3562 |
gen_op_movl_T1_im(val); |
3563 |
if (op < 4) |
3564 |
goto illegal_op;
|
3565 |
op -= 4;
|
3566 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
3567 |
s->cc_op = CC_OP_SARB + ot; |
3568 |
if (op != 0) { |
3569 |
if (mod != 3) |
3570 |
gen_op_st_T0_A0[ot + s->mem_index](); |
3571 |
else
|
3572 |
gen_op_mov_reg_T0[ot][rm](); |
3573 |
gen_op_update_bt_cc(); |
3574 |
} |
3575 |
break;
|
3576 |
case 0x1a3: /* bt Gv, Ev */ |
3577 |
op = 0;
|
3578 |
goto do_btx;
|
3579 |
case 0x1ab: /* bts */ |
3580 |
op = 1;
|
3581 |
goto do_btx;
|
3582 |
case 0x1b3: /* btr */ |
3583 |
op = 2;
|
3584 |
goto do_btx;
|
3585 |
case 0x1bb: /* btc */ |
3586 |
op = 3;
|
3587 |
do_btx:
|
3588 |
ot = dflag ? OT_LONG : OT_WORD; |
3589 |
modrm = ldub(s->pc++); |
3590 |
reg = (modrm >> 3) & 7; |
3591 |
mod = (modrm >> 6) & 3; |
3592 |
rm = modrm & 7;
|
3593 |
gen_op_mov_TN_reg[OT_LONG][1][reg]();
|
3594 |
if (mod != 3) { |
3595 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3596 |
/* specific case: we need to add a displacement */
|
3597 |
if (ot == OT_WORD)
|
3598 |
gen_op_add_bitw_A0_T1(); |
3599 |
else
|
3600 |
gen_op_add_bitl_A0_T1(); |
3601 |
gen_op_ld_T0_A0[ot + s->mem_index](); |
3602 |
} else {
|
3603 |
gen_op_mov_TN_reg[ot][0][rm]();
|
3604 |
} |
3605 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
3606 |
s->cc_op = CC_OP_SARB + ot; |
3607 |
if (op != 0) { |
3608 |
if (mod != 3) |
3609 |
gen_op_st_T0_A0[ot + s->mem_index](); |
3610 |
else
|
3611 |
gen_op_mov_reg_T0[ot][rm](); |
3612 |
gen_op_update_bt_cc(); |
3613 |
} |
3614 |
break;
|
3615 |
case 0x1bc: /* bsf */ |
3616 |
case 0x1bd: /* bsr */ |
3617 |
ot = dflag ? OT_LONG : OT_WORD; |
3618 |
modrm = ldub(s->pc++); |
3619 |
reg = (modrm >> 3) & 7; |
3620 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
3621 |
gen_op_bsx_T0_cc[ot - OT_WORD][b & 1]();
|
3622 |
/* NOTE: we always write back the result. Intel doc says it is
|
3623 |
undefined if T0 == 0 */
|
3624 |
gen_op_mov_reg_T0[ot][reg](); |
3625 |
s->cc_op = CC_OP_LOGICB + ot; |
3626 |
break;
|
3627 |
/************************/
|
3628 |
/* bcd */
|
3629 |
case 0x27: /* daa */ |
3630 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3631 |
gen_op_set_cc_op(s->cc_op); |
3632 |
gen_op_daa(); |
3633 |
s->cc_op = CC_OP_EFLAGS; |
3634 |
break;
|
3635 |
case 0x2f: /* das */ |
3636 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3637 |
gen_op_set_cc_op(s->cc_op); |
3638 |
gen_op_das(); |
3639 |
s->cc_op = CC_OP_EFLAGS; |
3640 |
break;
|
3641 |
case 0x37: /* aaa */ |
3642 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3643 |
gen_op_set_cc_op(s->cc_op); |
3644 |
gen_op_aaa(); |
3645 |
s->cc_op = CC_OP_EFLAGS; |
3646 |
break;
|
3647 |
case 0x3f: /* aas */ |
3648 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3649 |
gen_op_set_cc_op(s->cc_op); |
3650 |
gen_op_aas(); |
3651 |
s->cc_op = CC_OP_EFLAGS; |
3652 |
break;
|
3653 |
case 0xd4: /* aam */ |
3654 |
val = ldub(s->pc++); |
3655 |
gen_op_aam(val); |
3656 |
s->cc_op = CC_OP_LOGICB; |
3657 |
break;
|
3658 |
case 0xd5: /* aad */ |
3659 |
val = ldub(s->pc++); |
3660 |
gen_op_aad(val); |
3661 |
s->cc_op = CC_OP_LOGICB; |
3662 |
break;
|
3663 |
/************************/
|
3664 |
/* misc */
|
3665 |
case 0x90: /* nop */ |
3666 |
break;
|
3667 |
case 0x9b: /* fwait */ |
3668 |
break;
|
3669 |
case 0xcc: /* int3 */ |
3670 |
gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base); |
3671 |
break;
|
3672 |
case 0xcd: /* int N */ |
3673 |
val = ldub(s->pc++); |
3674 |
/* XXX: add error code for vm86 GPF */
|
3675 |
if (!s->vm86)
|
3676 |
gen_interrupt(s, val, pc_start - s->cs_base, s->pc - s->cs_base); |
3677 |
else
|
3678 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3679 |
break;
|
3680 |
case 0xce: /* into */ |
3681 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3682 |
gen_op_set_cc_op(s->cc_op); |
3683 |
gen_op_into(s->pc - s->cs_base); |
3684 |
break;
|
3685 |
case 0xf1: /* icebp (undocumented, exits to external debugger) */ |
3686 |
gen_debug(s, pc_start - s->cs_base); |
3687 |
break;
|
3688 |
case 0xfa: /* cli */ |
3689 |
if (!s->vm86) {
|
3690 |
if (s->cpl <= s->iopl) {
|
3691 |
gen_op_cli(); |
3692 |
} else {
|
3693 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3694 |
} |
3695 |
} else {
|
3696 |
if (s->iopl == 3) { |
3697 |
gen_op_cli(); |
3698 |
} else {
|
3699 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3700 |
} |
3701 |
} |
3702 |
break;
|
3703 |
case 0xfb: /* sti */ |
3704 |
if (!s->vm86) {
|
3705 |
if (s->cpl <= s->iopl) {
|
3706 |
gen_op_sti(); |
3707 |
s->is_jmp = 2; /* give a chance to handle pending irqs */ |
3708 |
} else {
|
3709 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3710 |
} |
3711 |
} else {
|
3712 |
if (s->iopl == 3) { |
3713 |
gen_op_sti(); |
3714 |
s->is_jmp = 2; /* give a chance to handle pending irqs */ |
3715 |
} else {
|
3716 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3717 |
} |
3718 |
} |
3719 |
/* XXX: interruptions are enabled only the first insn after sti */
|
3720 |
break;
|
3721 |
case 0x62: /* bound */ |
3722 |
ot = dflag ? OT_LONG : OT_WORD; |
3723 |
modrm = ldub(s->pc++); |
3724 |
reg = (modrm >> 3) & 7; |
3725 |
mod = (modrm >> 6) & 3; |
3726 |
if (mod == 3) |
3727 |
goto illegal_op;
|
3728 |
gen_op_mov_reg_T0[ot][reg](); |
3729 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3730 |
if (ot == OT_WORD)
|
3731 |
gen_op_boundw(pc_start - s->cs_base); |
3732 |
else
|
3733 |
gen_op_boundl(pc_start - s->cs_base); |
3734 |
break;
|
3735 |
case 0x1c8 ... 0x1cf: /* bswap reg */ |
3736 |
reg = b & 7;
|
3737 |
gen_op_mov_TN_reg[OT_LONG][0][reg]();
|
3738 |
gen_op_bswapl_T0(); |
3739 |
gen_op_mov_reg_T0[OT_LONG][reg](); |
3740 |
break;
|
3741 |
case 0xd6: /* salc */ |
3742 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3743 |
gen_op_set_cc_op(s->cc_op); |
3744 |
gen_op_salc(); |
3745 |
break;
|
3746 |
case 0xe0: /* loopnz */ |
3747 |
case 0xe1: /* loopz */ |
3748 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3749 |
gen_op_set_cc_op(s->cc_op); |
3750 |
/* FALL THRU */
|
3751 |
case 0xe2: /* loop */ |
3752 |
case 0xe3: /* jecxz */ |
3753 |
val = (int8_t)insn_get(s, OT_BYTE); |
3754 |
next_eip = s->pc - s->cs_base; |
3755 |
val += next_eip; |
3756 |
if (s->dflag == 0) |
3757 |
val &= 0xffff;
|
3758 |
gen_op_loop[s->aflag][b & 3](val, next_eip);
|
3759 |
s->is_jmp = 1;
|
3760 |
break;
|
3761 |
case 0x130: /* wrmsr */ |
3762 |
case 0x132: /* rdmsr */ |
3763 |
if (s->cpl != 0) { |
3764 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3765 |
} else {
|
3766 |
if (b & 2) |
3767 |
gen_op_rdmsr(); |
3768 |
else
|
3769 |
gen_op_wrmsr(); |
3770 |
} |
3771 |
break;
|
3772 |
case 0x131: /* rdtsc */ |
3773 |
gen_op_rdtsc(); |
3774 |
break;
|
3775 |
case 0x1a2: /* cpuid */ |
3776 |
gen_op_cpuid(); |
3777 |
break;
|
3778 |
case 0xf4: /* hlt */ |
3779 |
if (s->cpl != 0) { |
3780 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3781 |
} else {
|
3782 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3783 |
gen_op_set_cc_op(s->cc_op); |
3784 |
gen_op_jmp_im(s->pc - s->cs_base); |
3785 |
gen_op_hlt(); |
3786 |
s->is_jmp = 1;
|
3787 |
} |
3788 |
break;
|
3789 |
case 0x100: |
3790 |
modrm = ldub(s->pc++); |
3791 |
mod = (modrm >> 6) & 3; |
3792 |
op = (modrm >> 3) & 7; |
3793 |
switch(op) {
|
3794 |
case 0: /* sldt */ |
3795 |
gen_op_movl_T0_env(offsetof(CPUX86State,ldt.selector)); |
3796 |
ot = OT_WORD; |
3797 |
if (mod == 3) |
3798 |
ot += s->dflag; |
3799 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
3800 |
break;
|
3801 |
case 2: /* lldt */ |
3802 |
if (s->cpl != 0) { |
3803 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3804 |
} else {
|
3805 |
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
|
3806 |
gen_op_jmp_im(pc_start - s->cs_base); |
3807 |
gen_op_lldt_T0(); |
3808 |
} |
3809 |
break;
|
3810 |
case 1: /* str */ |
3811 |
gen_op_movl_T0_env(offsetof(CPUX86State,tr.selector)); |
3812 |
ot = OT_WORD; |
3813 |
if (mod == 3) |
3814 |
ot += s->dflag; |
3815 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
3816 |
break;
|
3817 |
case 3: /* ltr */ |
3818 |
if (s->cpl != 0) { |
3819 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3820 |
} else {
|
3821 |
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
|
3822 |
gen_op_jmp_im(pc_start - s->cs_base); |
3823 |
gen_op_ltr_T0(); |
3824 |
} |
3825 |
break;
|
3826 |
case 4: /* verr */ |
3827 |
case 5: /* verw */ |
3828 |
default:
|
3829 |
goto illegal_op;
|
3830 |
} |
3831 |
break;
|
3832 |
case 0x101: |
3833 |
modrm = ldub(s->pc++); |
3834 |
mod = (modrm >> 6) & 3; |
3835 |
op = (modrm >> 3) & 7; |
3836 |
switch(op) {
|
3837 |
case 0: /* sgdt */ |
3838 |
case 1: /* sidt */ |
3839 |
if (mod == 3) |
3840 |
goto illegal_op;
|
3841 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3842 |
if (op == 0) |
3843 |
gen_op_movl_T0_env(offsetof(CPUX86State,gdt.limit)); |
3844 |
else
|
3845 |
gen_op_movl_T0_env(offsetof(CPUX86State,idt.limit)); |
3846 |
gen_op_st_T0_A0[OT_WORD + s->mem_index](); |
3847 |
gen_op_addl_A0_im(2);
|
3848 |
if (op == 0) |
3849 |
gen_op_movl_T0_env(offsetof(CPUX86State,gdt.base)); |
3850 |
else
|
3851 |
gen_op_movl_T0_env(offsetof(CPUX86State,idt.base)); |
3852 |
if (!s->dflag)
|
3853 |
gen_op_andl_T0_im(0xffffff);
|
3854 |
gen_op_st_T0_A0[OT_LONG + s->mem_index](); |
3855 |
break;
|
3856 |
case 2: /* lgdt */ |
3857 |
case 3: /* lidt */ |
3858 |
if (mod == 3) |
3859 |
goto illegal_op;
|
3860 |
if (s->cpl != 0) { |
3861 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3862 |
} else {
|
3863 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3864 |
gen_op_ld_T1_A0[OT_WORD + s->mem_index](); |
3865 |
gen_op_addl_A0_im(2);
|
3866 |
gen_op_ld_T0_A0[OT_LONG + s->mem_index](); |
3867 |
if (!s->dflag)
|
3868 |
gen_op_andl_T0_im(0xffffff);
|
3869 |
if (op == 2) { |
3870 |
gen_op_movl_env_T0(offsetof(CPUX86State,gdt.base)); |
3871 |
gen_op_movl_env_T1(offsetof(CPUX86State,gdt.limit)); |
3872 |
} else {
|
3873 |
gen_op_movl_env_T0(offsetof(CPUX86State,idt.base)); |
3874 |
gen_op_movl_env_T1(offsetof(CPUX86State,idt.limit)); |
3875 |
} |
3876 |
} |
3877 |
break;
|
3878 |
case 4: /* smsw */ |
3879 |
gen_op_movl_T0_env(offsetof(CPUX86State,cr[0]));
|
3880 |
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 1);
|
3881 |
break;
|
3882 |
case 6: /* lmsw */ |
3883 |
if (s->cpl != 0) { |
3884 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3885 |
} else {
|
3886 |
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
|
3887 |
gen_op_lmsw_T0(); |
3888 |
} |
3889 |
break;
|
3890 |
case 7: /* invlpg */ |
3891 |
if (s->cpl != 0) { |
3892 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3893 |
} else {
|
3894 |
if (mod == 3) |
3895 |
goto illegal_op;
|
3896 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3897 |
gen_op_invlpg_A0(); |
3898 |
} |
3899 |
break;
|
3900 |
default:
|
3901 |
goto illegal_op;
|
3902 |
} |
3903 |
break;
|
3904 |
case 0x102: /* lar */ |
3905 |
case 0x103: /* lsl */ |
3906 |
if (!s->pe || s->vm86)
|
3907 |
goto illegal_op;
|
3908 |
ot = dflag ? OT_LONG : OT_WORD; |
3909 |
modrm = ldub(s->pc++); |
3910 |
reg = (modrm >> 3) & 7; |
3911 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
3912 |
gen_op_mov_TN_reg[ot][1][reg]();
|
3913 |
if (s->cc_op != CC_OP_DYNAMIC)
|
3914 |
gen_op_set_cc_op(s->cc_op); |
3915 |
if (b == 0x102) |
3916 |
gen_op_lar(); |
3917 |
else
|
3918 |
gen_op_lsl(); |
3919 |
s->cc_op = CC_OP_EFLAGS; |
3920 |
gen_op_mov_reg_T1[ot][reg](); |
3921 |
break;
|
3922 |
case 0x118: |
3923 |
modrm = ldub(s->pc++); |
3924 |
mod = (modrm >> 6) & 3; |
3925 |
op = (modrm >> 3) & 7; |
3926 |
switch(op) {
|
3927 |
case 0: /* prefetchnta */ |
3928 |
case 1: /* prefetchnt0 */ |
3929 |
case 2: /* prefetchnt0 */ |
3930 |
case 3: /* prefetchnt0 */ |
3931 |
if (mod == 3) |
3932 |
goto illegal_op;
|
3933 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
3934 |
/* nothing more to do */
|
3935 |
break;
|
3936 |
default:
|
3937 |
goto illegal_op;
|
3938 |
} |
3939 |
break;
|
3940 |
case 0x120: /* mov reg, crN */ |
3941 |
case 0x122: /* mov crN, reg */ |
3942 |
if (s->cpl != 0) { |
3943 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3944 |
} else {
|
3945 |
modrm = ldub(s->pc++); |
3946 |
if ((modrm & 0xc0) != 0xc0) |
3947 |
goto illegal_op;
|
3948 |
rm = modrm & 7;
|
3949 |
reg = (modrm >> 3) & 7; |
3950 |
switch(reg) {
|
3951 |
case 0: |
3952 |
case 2: |
3953 |
case 3: |
3954 |
case 4: |
3955 |
if (b & 2) { |
3956 |
gen_op_mov_TN_reg[OT_LONG][0][rm]();
|
3957 |
gen_op_movl_crN_T0(reg); |
3958 |
s->is_jmp = 2;
|
3959 |
} else {
|
3960 |
gen_op_movl_T0_env(offsetof(CPUX86State,cr[reg])); |
3961 |
gen_op_mov_reg_T0[OT_LONG][rm](); |
3962 |
} |
3963 |
break;
|
3964 |
default:
|
3965 |
goto illegal_op;
|
3966 |
} |
3967 |
} |
3968 |
break;
|
3969 |
case 0x121: /* mov reg, drN */ |
3970 |
case 0x123: /* mov drN, reg */ |
3971 |
if (s->cpl != 0) { |
3972 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3973 |
} else {
|
3974 |
modrm = ldub(s->pc++); |
3975 |
if ((modrm & 0xc0) != 0xc0) |
3976 |
goto illegal_op;
|
3977 |
rm = modrm & 7;
|
3978 |
reg = (modrm >> 3) & 7; |
3979 |
/* XXX: do it dynamically with CR4.DE bit */
|
3980 |
if (reg == 4 || reg == 5) |
3981 |
goto illegal_op;
|
3982 |
if (b & 2) { |
3983 |
gen_op_mov_TN_reg[OT_LONG][0][rm]();
|
3984 |
gen_op_movl_drN_T0(reg); |
3985 |
s->is_jmp = 2;
|
3986 |
} else {
|
3987 |
gen_op_movl_T0_env(offsetof(CPUX86State,dr[reg])); |
3988 |
gen_op_mov_reg_T0[OT_LONG][rm](); |
3989 |
} |
3990 |
} |
3991 |
break;
|
3992 |
case 0x106: /* clts */ |
3993 |
if (s->cpl != 0) { |
3994 |
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); |
3995 |
} else {
|
3996 |
gen_op_clts(); |
3997 |
} |
3998 |
break;
|
3999 |
default:
|
4000 |
goto illegal_op;
|
4001 |
} |
4002 |
/* lock generation */
|
4003 |
if (s->prefix & PREFIX_LOCK)
|
4004 |
gen_op_unlock(); |
4005 |
return (long)s->pc; |
4006 |
illegal_op:
|
4007 |
/* XXX: ensure that no lock was generated */
|
4008 |
return -1; |
4009 |
} |
4010 |
|
4011 |
#define CC_OSZAPC (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C)
|
4012 |
#define CC_OSZAP (CC_O | CC_S | CC_Z | CC_A | CC_P)
|
4013 |
|
4014 |
/* flags read by an operation */
|
4015 |
static uint16_t opc_read_flags[NB_OPS] = {
|
4016 |
[INDEX_op_aas] = CC_A, |
4017 |
[INDEX_op_aaa] = CC_A, |
4018 |
[INDEX_op_das] = CC_A | CC_C, |
4019 |
[INDEX_op_daa] = CC_A | CC_C, |
4020 |
|
4021 |
[INDEX_op_adcb_T0_T1_cc] = CC_C, |
4022 |
[INDEX_op_adcw_T0_T1_cc] = CC_C, |
4023 |
[INDEX_op_adcl_T0_T1_cc] = CC_C, |
4024 |
[INDEX_op_sbbb_T0_T1_cc] = CC_C, |
4025 |
[INDEX_op_sbbw_T0_T1_cc] = CC_C, |
4026 |
[INDEX_op_sbbl_T0_T1_cc] = CC_C, |
4027 |
|
4028 |
[INDEX_op_adcb_mem_T0_T1_cc] = CC_C, |
4029 |
[INDEX_op_adcw_mem_T0_T1_cc] = CC_C, |
4030 |
[INDEX_op_adcl_mem_T0_T1_cc] = CC_C, |
4031 |
[INDEX_op_sbbb_mem_T0_T1_cc] = CC_C, |
4032 |
[INDEX_op_sbbw_mem_T0_T1_cc] = CC_C, |
4033 |
[INDEX_op_sbbl_mem_T0_T1_cc] = CC_C, |
4034 |
|
4035 |
/* subtle: due to the incl/decl implementation, C is used */
|
4036 |
[INDEX_op_update_inc_cc] = CC_C, |
4037 |
|
4038 |
[INDEX_op_into] = CC_O, |
4039 |
|
4040 |
[INDEX_op_jb_subb] = CC_C, |
4041 |
[INDEX_op_jb_subw] = CC_C, |
4042 |
[INDEX_op_jb_subl] = CC_C, |
4043 |
|
4044 |
[INDEX_op_jz_subb] = CC_Z, |
4045 |
[INDEX_op_jz_subw] = CC_Z, |
4046 |
[INDEX_op_jz_subl] = CC_Z, |
4047 |
|
4048 |
[INDEX_op_jbe_subb] = CC_Z | CC_C, |
4049 |
[INDEX_op_jbe_subw] = CC_Z | CC_C, |
4050 |
[INDEX_op_jbe_subl] = CC_Z | CC_C, |
4051 |
|
4052 |
[INDEX_op_js_subb] = CC_S, |
4053 |
[INDEX_op_js_subw] = CC_S, |
4054 |
[INDEX_op_js_subl] = CC_S, |
4055 |
|
4056 |
[INDEX_op_jl_subb] = CC_O | CC_S, |
4057 |
[INDEX_op_jl_subw] = CC_O | CC_S, |
4058 |
[INDEX_op_jl_subl] = CC_O | CC_S, |
4059 |
|
4060 |
[INDEX_op_jle_subb] = CC_O | CC_S | CC_Z, |
4061 |
[INDEX_op_jle_subw] = CC_O | CC_S | CC_Z, |
4062 |
[INDEX_op_jle_subl] = CC_O | CC_S | CC_Z, |
4063 |
|
4064 |
[INDEX_op_loopnzw] = CC_Z, |
4065 |
[INDEX_op_loopnzl] = CC_Z, |
4066 |
[INDEX_op_loopzw] = CC_Z, |
4067 |
[INDEX_op_loopzl] = CC_Z, |
4068 |
|
4069 |
[INDEX_op_seto_T0_cc] = CC_O, |
4070 |
[INDEX_op_setb_T0_cc] = CC_C, |
4071 |
[INDEX_op_setz_T0_cc] = CC_Z, |
4072 |
[INDEX_op_setbe_T0_cc] = CC_Z | CC_C, |
4073 |
[INDEX_op_sets_T0_cc] = CC_S, |
4074 |
[INDEX_op_setp_T0_cc] = CC_P, |
4075 |
[INDEX_op_setl_T0_cc] = CC_O | CC_S, |
4076 |
[INDEX_op_setle_T0_cc] = CC_O | CC_S | CC_Z, |
4077 |
|
4078 |
[INDEX_op_setb_T0_subb] = CC_C, |
4079 |
[INDEX_op_setb_T0_subw] = CC_C, |
4080 |
[INDEX_op_setb_T0_subl] = CC_C, |
4081 |
|
4082 |
[INDEX_op_setz_T0_subb] = CC_Z, |
4083 |
[INDEX_op_setz_T0_subw] = CC_Z, |
4084 |
[INDEX_op_setz_T0_subl] = CC_Z, |
4085 |
|
4086 |
[INDEX_op_setbe_T0_subb] = CC_Z | CC_C, |
4087 |
[INDEX_op_setbe_T0_subw] = CC_Z | CC_C, |
4088 |
[INDEX_op_setbe_T0_subl] = CC_Z | CC_C, |
4089 |
|
4090 |
[INDEX_op_sets_T0_subb] = CC_S, |
4091 |
[INDEX_op_sets_T0_subw] = CC_S, |
4092 |
[INDEX_op_sets_T0_subl] = CC_S, |
4093 |
|
4094 |
[INDEX_op_setl_T0_subb] = CC_O | CC_S, |
4095 |
[INDEX_op_setl_T0_subw] = CC_O | CC_S, |
4096 |
[INDEX_op_setl_T0_subl] = CC_O | CC_S, |
4097 |
|
4098 |
[INDEX_op_setle_T0_subb] = CC_O | CC_S | CC_Z, |
4099 |
[INDEX_op_setle_T0_subw] = CC_O | CC_S | CC_Z, |
4100 |
[INDEX_op_setle_T0_subl] = CC_O | CC_S | CC_Z, |
4101 |
|
4102 |
[INDEX_op_movl_T0_eflags] = CC_OSZAPC, |
4103 |
[INDEX_op_cmc] = CC_C, |
4104 |
[INDEX_op_salc] = CC_C, |
4105 |
|
4106 |
[INDEX_op_rclb_T0_T1_cc] = CC_C, |
4107 |
[INDEX_op_rclw_T0_T1_cc] = CC_C, |
4108 |
[INDEX_op_rcll_T0_T1_cc] = CC_C, |
4109 |
[INDEX_op_rcrb_T0_T1_cc] = CC_C, |
4110 |
[INDEX_op_rcrw_T0_T1_cc] = CC_C, |
4111 |
[INDEX_op_rcrl_T0_T1_cc] = CC_C, |
4112 |
|
4113 |
[INDEX_op_rclb_mem_T0_T1_cc] = CC_C, |
4114 |
[INDEX_op_rclw_mem_T0_T1_cc] = CC_C, |
4115 |
[INDEX_op_rcll_mem_T0_T1_cc] = CC_C, |
4116 |
[INDEX_op_rcrb_mem_T0_T1_cc] = CC_C, |
4117 |
[INDEX_op_rcrw_mem_T0_T1_cc] = CC_C, |
4118 |
[INDEX_op_rcrl_mem_T0_T1_cc] = CC_C, |
4119 |
}; |
4120 |
|
4121 |
/* flags written by an operation */
|
4122 |
static uint16_t opc_write_flags[NB_OPS] = {
|
4123 |
[INDEX_op_update2_cc] = CC_OSZAPC, |
4124 |
[INDEX_op_update1_cc] = CC_OSZAPC, |
4125 |
[INDEX_op_cmpl_T0_T1_cc] = CC_OSZAPC, |
4126 |
[INDEX_op_update_neg_cc] = CC_OSZAPC, |
4127 |
/* subtle: due to the incl/decl implementation, C is used */
|
4128 |
[INDEX_op_update_inc_cc] = CC_OSZAPC, |
4129 |
[INDEX_op_testl_T0_T1_cc] = CC_OSZAPC, |
4130 |
|
4131 |
[INDEX_op_adcb_T0_T1_cc] = CC_OSZAPC, |
4132 |
[INDEX_op_adcw_T0_T1_cc] = CC_OSZAPC, |
4133 |
[INDEX_op_adcl_T0_T1_cc] = CC_OSZAPC, |
4134 |
[INDEX_op_sbbb_T0_T1_cc] = CC_OSZAPC, |
4135 |
[INDEX_op_sbbw_T0_T1_cc] = CC_OSZAPC, |
4136 |
[INDEX_op_sbbl_T0_T1_cc] = CC_OSZAPC, |
4137 |
|
4138 |
[INDEX_op_adcb_mem_T0_T1_cc] = CC_OSZAPC, |
4139 |
[INDEX_op_adcw_mem_T0_T1_cc] = CC_OSZAPC, |
4140 |
[INDEX_op_adcl_mem_T0_T1_cc] = CC_OSZAPC, |
4141 |
[INDEX_op_sbbb_mem_T0_T1_cc] = CC_OSZAPC, |
4142 |
[INDEX_op_sbbw_mem_T0_T1_cc] = CC_OSZAPC, |
4143 |
[INDEX_op_sbbl_mem_T0_T1_cc] = CC_OSZAPC, |
4144 |
|
4145 |
[INDEX_op_mulb_AL_T0] = CC_OSZAPC, |
4146 |
[INDEX_op_imulb_AL_T0] = CC_OSZAPC, |
4147 |
[INDEX_op_mulw_AX_T0] = CC_OSZAPC, |
4148 |
[INDEX_op_imulw_AX_T0] = CC_OSZAPC, |
4149 |
[INDEX_op_mull_EAX_T0] = CC_OSZAPC, |
4150 |
[INDEX_op_imull_EAX_T0] = CC_OSZAPC, |
4151 |
[INDEX_op_imulw_T0_T1] = CC_OSZAPC, |
4152 |
[INDEX_op_imull_T0_T1] = CC_OSZAPC, |
4153 |
|
4154 |
/* bcd */
|
4155 |
[INDEX_op_aam] = CC_OSZAPC, |
4156 |
[INDEX_op_aad] = CC_OSZAPC, |
4157 |
[INDEX_op_aas] = CC_OSZAPC, |
4158 |
[INDEX_op_aaa] = CC_OSZAPC, |
4159 |
[INDEX_op_das] = CC_OSZAPC, |
4160 |
[INDEX_op_daa] = CC_OSZAPC, |
4161 |
|
4162 |
[INDEX_op_movb_eflags_T0] = CC_S | CC_Z | CC_A | CC_P | CC_C, |
4163 |
[INDEX_op_movw_eflags_T0] = CC_OSZAPC, |
4164 |
[INDEX_op_movl_eflags_T0] = CC_OSZAPC, |
4165 |
[INDEX_op_clc] = CC_C, |
4166 |
[INDEX_op_stc] = CC_C, |
4167 |
[INDEX_op_cmc] = CC_C, |
4168 |
|
4169 |
[INDEX_op_rolb_T0_T1_cc] = CC_O | CC_C, |
4170 |
[INDEX_op_rolw_T0_T1_cc] = CC_O | CC_C, |
4171 |
[INDEX_op_roll_T0_T1_cc] = CC_O | CC_C, |
4172 |
[INDEX_op_rorb_T0_T1_cc] = CC_O | CC_C, |
4173 |
[INDEX_op_rorw_T0_T1_cc] = CC_O | CC_C, |
4174 |
[INDEX_op_rorl_T0_T1_cc] = CC_O | CC_C, |
4175 |
|
4176 |
[INDEX_op_rclb_T0_T1_cc] = CC_O | CC_C, |
4177 |
[INDEX_op_rclw_T0_T1_cc] = CC_O | CC_C, |
4178 |
[INDEX_op_rcll_T0_T1_cc] = CC_O | CC_C, |
4179 |
[INDEX_op_rcrb_T0_T1_cc] = CC_O | CC_C, |
4180 |
[INDEX_op_rcrw_T0_T1_cc] = CC_O | CC_C, |
4181 |
[INDEX_op_rcrl_T0_T1_cc] = CC_O | CC_C, |
4182 |
|
4183 |
[INDEX_op_shlb_T0_T1_cc] = CC_OSZAPC, |
4184 |
[INDEX_op_shlw_T0_T1_cc] = CC_OSZAPC, |
4185 |
[INDEX_op_shll_T0_T1_cc] = CC_OSZAPC, |
4186 |
|
4187 |
[INDEX_op_shrb_T0_T1_cc] = CC_OSZAPC, |
4188 |
[INDEX_op_shrw_T0_T1_cc] = CC_OSZAPC, |
4189 |
[INDEX_op_shrl_T0_T1_cc] = CC_OSZAPC, |
4190 |
|
4191 |
[INDEX_op_sarb_T0_T1_cc] = CC_OSZAPC, |
4192 |
[INDEX_op_sarw_T0_T1_cc] = CC_OSZAPC, |
4193 |
[INDEX_op_sarl_T0_T1_cc] = CC_OSZAPC, |
4194 |
|
4195 |
[INDEX_op_shldw_T0_T1_ECX_cc] = CC_OSZAPC, |
4196 |
[INDEX_op_shldl_T0_T1_ECX_cc] = CC_OSZAPC, |
4197 |
[INDEX_op_shldw_T0_T1_im_cc] = CC_OSZAPC, |
4198 |
[INDEX_op_shldl_T0_T1_im_cc] = CC_OSZAPC, |
4199 |
|
4200 |
[INDEX_op_shrdw_T0_T1_ECX_cc] = CC_OSZAPC, |
4201 |
[INDEX_op_shrdl_T0_T1_ECX_cc] = CC_OSZAPC, |
4202 |
[INDEX_op_shrdw_T0_T1_im_cc] = CC_OSZAPC, |
4203 |
[INDEX_op_shrdl_T0_T1_im_cc] = CC_OSZAPC, |
4204 |
|
4205 |
[INDEX_op_rolb_mem_T0_T1_cc] = CC_O | CC_C, |
4206 |
[INDEX_op_rolw_mem_T0_T1_cc] = CC_O | CC_C, |
4207 |
[INDEX_op_roll_mem_T0_T1_cc] = CC_O | CC_C, |
4208 |
[INDEX_op_rorb_mem_T0_T1_cc] = CC_O | CC_C, |
4209 |
[INDEX_op_rorw_mem_T0_T1_cc] = CC_O | CC_C, |
4210 |
[INDEX_op_rorl_mem_T0_T1_cc] = CC_O | CC_C, |
4211 |
|
4212 |
[INDEX_op_rclb_mem_T0_T1_cc] = CC_O | CC_C, |
4213 |
[INDEX_op_rclw_mem_T0_T1_cc] = CC_O | CC_C, |
4214 |
[INDEX_op_rcll_mem_T0_T1_cc] = CC_O | CC_C, |
4215 |
[INDEX_op_rcrb_mem_T0_T1_cc] = CC_O | CC_C, |
4216 |
[INDEX_op_rcrw_mem_T0_T1_cc] = CC_O | CC_C, |
4217 |
[INDEX_op_rcrl_mem_T0_T1_cc] = CC_O | CC_C, |
4218 |
|
4219 |
[INDEX_op_shlb_mem_T0_T1_cc] = CC_OSZAPC, |
4220 |
[INDEX_op_shlw_mem_T0_T1_cc] = CC_OSZAPC, |
4221 |
[INDEX_op_shll_mem_T0_T1_cc] = CC_OSZAPC, |
4222 |
|
4223 |
[INDEX_op_shrb_mem_T0_T1_cc] = CC_OSZAPC, |
4224 |
[INDEX_op_shrw_mem_T0_T1_cc] = CC_OSZAPC, |
4225 |
[INDEX_op_shrl_mem_T0_T1_cc] = CC_OSZAPC, |
4226 |
|
4227 |
[INDEX_op_sarb_mem_T0_T1_cc] = CC_OSZAPC, |
4228 |
[INDEX_op_sarw_mem_T0_T1_cc] = CC_OSZAPC, |
4229 |
[INDEX_op_sarl_mem_T0_T1_cc] = CC_OSZAPC, |
4230 |
|
4231 |
[INDEX_op_shldw_mem_T0_T1_ECX_cc] = CC_OSZAPC, |
4232 |
[INDEX_op_shldl_mem_T0_T1_ECX_cc] = CC_OSZAPC, |
4233 |
[INDEX_op_shldw_mem_T0_T1_im_cc] = CC_OSZAPC, |
4234 |
[INDEX_op_shldl_mem_T0_T1_im_cc] = CC_OSZAPC, |
4235 |
|
4236 |
[INDEX_op_shrdw_mem_T0_T1_ECX_cc] = CC_OSZAPC, |
4237 |
[INDEX_op_shrdl_mem_T0_T1_ECX_cc] = CC_OSZAPC, |
4238 |
[INDEX_op_shrdw_mem_T0_T1_im_cc] = CC_OSZAPC, |
4239 |
[INDEX_op_shrdl_mem_T0_T1_im_cc] = CC_OSZAPC, |
4240 |
|
4241 |
[INDEX_op_btw_T0_T1_cc] = CC_OSZAPC, |
4242 |
[INDEX_op_btl_T0_T1_cc] = CC_OSZAPC, |
4243 |
[INDEX_op_btsw_T0_T1_cc] = CC_OSZAPC, |
4244 |
[INDEX_op_btsl_T0_T1_cc] = CC_OSZAPC, |
4245 |
[INDEX_op_btrw_T0_T1_cc] = CC_OSZAPC, |
4246 |
[INDEX_op_btrl_T0_T1_cc] = CC_OSZAPC, |
4247 |
[INDEX_op_btcw_T0_T1_cc] = CC_OSZAPC, |
4248 |
[INDEX_op_btcl_T0_T1_cc] = CC_OSZAPC, |
4249 |
|
4250 |
[INDEX_op_bsfw_T0_cc] = CC_OSZAPC, |
4251 |
[INDEX_op_bsfl_T0_cc] = CC_OSZAPC, |
4252 |
[INDEX_op_bsrw_T0_cc] = CC_OSZAPC, |
4253 |
[INDEX_op_bsrl_T0_cc] = CC_OSZAPC, |
4254 |
|
4255 |
#undef STRINGOP
|
4256 |
#define STRINGOP(x) \
|
4257 |
[INDEX_op_ ## x ## b_fast] = CC_OSZAPC, \ |
4258 |
[INDEX_op_ ## x ## w_fast] = CC_OSZAPC, \ |
4259 |
[INDEX_op_ ## x ## l_fast] = CC_OSZAPC, \ |
4260 |
[INDEX_op_ ## x ## b_a32] = CC_OSZAPC, \ |
4261 |
[INDEX_op_ ## x ## w_a32] = CC_OSZAPC, \ |
4262 |
[INDEX_op_ ## x ## l_a32] = CC_OSZAPC, \ |
4263 |
[INDEX_op_ ## x ## b_a16] = CC_OSZAPC, \ |
4264 |
[INDEX_op_ ## x ## w_a16] = CC_OSZAPC, \ |
4265 |
[INDEX_op_ ## x ## l_a16] = CC_OSZAPC, |
4266 |
|
4267 |
STRINGOP(repz_scas) |
4268 |
STRINGOP(repnz_scas) |
4269 |
STRINGOP(repz_cmps) |
4270 |
STRINGOP(repnz_cmps) |
4271 |
|
4272 |
[INDEX_op_cmpxchgb_T0_T1_EAX_cc] = CC_OSZAPC, |
4273 |
[INDEX_op_cmpxchgw_T0_T1_EAX_cc] = CC_OSZAPC, |
4274 |
[INDEX_op_cmpxchgl_T0_T1_EAX_cc] = CC_OSZAPC, |
4275 |
|
4276 |
[INDEX_op_cmpxchgb_mem_T0_T1_EAX_cc] = CC_OSZAPC, |
4277 |
[INDEX_op_cmpxchgw_mem_T0_T1_EAX_cc] = CC_OSZAPC, |
4278 |
[INDEX_op_cmpxchgl_mem_T0_T1_EAX_cc] = CC_OSZAPC, |
4279 |
|
4280 |
[INDEX_op_cmpxchg8b] = CC_Z, |
4281 |
[INDEX_op_lar] = CC_Z, |
4282 |
[INDEX_op_lsl] = CC_Z, |
4283 |
[INDEX_op_fcomi_ST0_FT0] = CC_Z | CC_P | CC_C, |
4284 |
[INDEX_op_fucomi_ST0_FT0] = CC_Z | CC_P | CC_C, |
4285 |
}; |
4286 |
|
4287 |
/* simpler form of an operation if no flags need to be generated */
|
4288 |
static uint16_t opc_simpler[NB_OPS] = {
|
4289 |
[INDEX_op_update2_cc] = INDEX_op_nop, |
4290 |
[INDEX_op_update1_cc] = INDEX_op_nop, |
4291 |
[INDEX_op_update_neg_cc] = INDEX_op_nop, |
4292 |
#if 0
|
4293 |
/* broken: CC_OP logic must be rewritten */
|
4294 |
[INDEX_op_update_inc_cc] = INDEX_op_nop,
|
4295 |
#endif
|
4296 |
[INDEX_op_rolb_T0_T1_cc] = INDEX_op_rolb_T0_T1, |
4297 |
[INDEX_op_rolw_T0_T1_cc] = INDEX_op_rolw_T0_T1, |
4298 |
[INDEX_op_roll_T0_T1_cc] = INDEX_op_roll_T0_T1, |
4299 |
|
4300 |
[INDEX_op_rorb_T0_T1_cc] = INDEX_op_rorb_T0_T1, |
4301 |
[INDEX_op_rorw_T0_T1_cc] = INDEX_op_rorw_T0_T1, |
4302 |
[INDEX_op_rorl_T0_T1_cc] = INDEX_op_rorl_T0_T1, |
4303 |
|
4304 |
[INDEX_op_rolb_mem_T0_T1_cc] = INDEX_op_rolb_mem_T0_T1, |
4305 |
[INDEX_op_rolw_mem_T0_T1_cc] = INDEX_op_rolw_mem_T0_T1, |
4306 |
[INDEX_op_roll_mem_T0_T1_cc] = INDEX_op_roll_mem_T0_T1, |
4307 |
|
4308 |
[INDEX_op_rorb_mem_T0_T1_cc] = INDEX_op_rorb_mem_T0_T1, |
4309 |
[INDEX_op_rorw_mem_T0_T1_cc] = INDEX_op_rorw_mem_T0_T1, |
4310 |
[INDEX_op_rorl_mem_T0_T1_cc] = INDEX_op_rorl_mem_T0_T1, |
4311 |
|
4312 |
[INDEX_op_shlb_T0_T1_cc] = INDEX_op_shlb_T0_T1, |
4313 |
[INDEX_op_shlw_T0_T1_cc] = INDEX_op_shlw_T0_T1, |
4314 |
[INDEX_op_shll_T0_T1_cc] = INDEX_op_shll_T0_T1, |
4315 |
|
4316 |
[INDEX_op_shrb_T0_T1_cc] = INDEX_op_shrb_T0_T1, |
4317 |
[INDEX_op_shrw_T0_T1_cc] = INDEX_op_shrw_T0_T1, |
4318 |
[INDEX_op_shrl_T0_T1_cc] = INDEX_op_shrl_T0_T1, |
4319 |
|
4320 |
[INDEX_op_sarb_T0_T1_cc] = INDEX_op_sarb_T0_T1, |
4321 |
[INDEX_op_sarw_T0_T1_cc] = INDEX_op_sarw_T0_T1, |
4322 |
[INDEX_op_sarl_T0_T1_cc] = INDEX_op_sarl_T0_T1, |
4323 |
}; |
4324 |
|
4325 |
void optimize_flags_init(void) |
4326 |
{ |
4327 |
int i;
|
4328 |
/* put default values in arrays */
|
4329 |
for(i = 0; i < NB_OPS; i++) { |
4330 |
if (opc_simpler[i] == 0) |
4331 |
opc_simpler[i] = i; |
4332 |
} |
4333 |
} |
4334 |
|
4335 |
/* CPU flags computation optimization: we move backward thru the
|
4336 |
generated code to see which flags are needed. The operation is
|
4337 |
modified if suitable */
|
4338 |
static void optimize_flags(uint16_t *opc_buf, int opc_buf_len) |
4339 |
{ |
4340 |
uint16_t *opc_ptr; |
4341 |
int live_flags, write_flags, op;
|
4342 |
|
4343 |
opc_ptr = opc_buf + opc_buf_len; |
4344 |
/* live_flags contains the flags needed by the next instructions
|
4345 |
in the code. At the end of the bloc, we consider that all the
|
4346 |
flags are live. */
|
4347 |
live_flags = CC_OSZAPC; |
4348 |
while (opc_ptr > opc_buf) {
|
4349 |
op = *--opc_ptr; |
4350 |
/* if none of the flags written by the instruction is used,
|
4351 |
then we can try to find a simpler instruction */
|
4352 |
write_flags = opc_write_flags[op]; |
4353 |
if ((live_flags & write_flags) == 0) { |
4354 |
*opc_ptr = opc_simpler[op]; |
4355 |
} |
4356 |
/* compute the live flags before the instruction */
|
4357 |
live_flags &= ~write_flags; |
4358 |
live_flags |= opc_read_flags[op]; |
4359 |
} |
4360 |
} |
4361 |
|
4362 |
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
|
4363 |
basic block 'tb'. If search_pc is TRUE, also generate PC
|
4364 |
information for each intermediate instruction. */
|
4365 |
static inline int gen_intermediate_code_internal(CPUState *env, |
4366 |
TranslationBlock *tb, |
4367 |
int search_pc)
|
4368 |
{ |
4369 |
DisasContext dc1, *dc = &dc1; |
4370 |
uint8_t *pc_ptr; |
4371 |
uint16_t *gen_opc_end; |
4372 |
int flags, j, lj;
|
4373 |
long ret;
|
4374 |
uint8_t *pc_start; |
4375 |
uint8_t *cs_base; |
4376 |
|
4377 |
/* generate intermediate code */
|
4378 |
pc_start = (uint8_t *)tb->pc; |
4379 |
cs_base = (uint8_t *)tb->cs_base; |
4380 |
flags = tb->flags; |
4381 |
|
4382 |
dc->pe = env->cr[0] & CR0_PE_MASK;
|
4383 |
dc->code32 = (flags >> GEN_FLAG_CODE32_SHIFT) & 1;
|
4384 |
dc->ss32 = (flags >> GEN_FLAG_SS32_SHIFT) & 1;
|
4385 |
dc->addseg = (flags >> GEN_FLAG_ADDSEG_SHIFT) & 1;
|
4386 |
dc->f_st = (flags >> GEN_FLAG_ST_SHIFT) & 7;
|
4387 |
dc->vm86 = (flags >> GEN_FLAG_VM_SHIFT) & 1;
|
4388 |
dc->cpl = (flags >> GEN_FLAG_CPL_SHIFT) & 3;
|
4389 |
dc->iopl = (flags >> GEN_FLAG_IOPL_SHIFT) & 3;
|
4390 |
dc->tf = (flags >> GEN_FLAG_TF_SHIFT) & 1;
|
4391 |
dc->cc_op = CC_OP_DYNAMIC; |
4392 |
dc->cs_base = cs_base; |
4393 |
dc->tb = tb; |
4394 |
dc->popl_esp_hack = 0;
|
4395 |
/* select memory access functions */
|
4396 |
dc->mem_index = 0;
|
4397 |
if ((flags >> GEN_FLAG_SOFT_MMU_SHIFT) & 1) { |
4398 |
if (dc->cpl == 3) |
4399 |
dc->mem_index = 6;
|
4400 |
else
|
4401 |
dc->mem_index = 3;
|
4402 |
} |
4403 |
|
4404 |
gen_opc_ptr = gen_opc_buf; |
4405 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
4406 |
gen_opparam_ptr = gen_opparam_buf; |
4407 |
|
4408 |
dc->is_jmp = DISAS_NEXT; |
4409 |
pc_ptr = pc_start; |
4410 |
lj = -1;
|
4411 |
do {
|
4412 |
if (env->nb_breakpoints > 0) { |
4413 |
for(j = 0; j < env->nb_breakpoints; j++) { |
4414 |
if (env->breakpoints[j] == (unsigned long)pc_ptr) { |
4415 |
gen_debug(dc, pc_ptr - dc->cs_base); |
4416 |
goto the_end;
|
4417 |
} |
4418 |
} |
4419 |
} |
4420 |
if (search_pc) {
|
4421 |
j = gen_opc_ptr - gen_opc_buf; |
4422 |
if (lj < j) {
|
4423 |
lj++; |
4424 |
while (lj < j)
|
4425 |
gen_opc_instr_start[lj++] = 0;
|
4426 |
} |
4427 |
gen_opc_pc[lj] = (uint32_t)pc_ptr; |
4428 |
gen_opc_cc_op[lj] = dc->cc_op; |
4429 |
gen_opc_instr_start[lj] = 1;
|
4430 |
} |
4431 |
ret = disas_insn(dc, pc_ptr); |
4432 |
if (ret == -1) { |
4433 |
/* we trigger an illegal instruction operation only if it
|
4434 |
is the first instruction. Otherwise, we simply stop
|
4435 |
generating the code just before it */
|
4436 |
if (pc_ptr == pc_start)
|
4437 |
return -1; |
4438 |
else
|
4439 |
break;
|
4440 |
} |
4441 |
pc_ptr = (void *)ret;
|
4442 |
/* if single step mode, we generate only one instruction and
|
4443 |
generate an exception */
|
4444 |
if (dc->tf)
|
4445 |
break;
|
4446 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
4447 |
(pc_ptr - pc_start) < (TARGET_PAGE_SIZE - 32));
|
4448 |
if (!dc->tf && dc->is_jmp == DISAS_NEXT) {
|
4449 |
gen_jmp(dc, ret - (unsigned long)dc->cs_base); |
4450 |
} |
4451 |
|
4452 |
/* we must store the eflags state if it is not already done */
|
4453 |
if (dc->is_jmp != DISAS_TB_JUMP) {
|
4454 |
if (dc->cc_op != CC_OP_DYNAMIC)
|
4455 |
gen_op_set_cc_op(dc->cc_op); |
4456 |
if (dc->is_jmp != DISAS_JUMP) {
|
4457 |
/* we add an additionnal jmp to update the simulated PC */
|
4458 |
gen_op_jmp_im(ret - (unsigned long)dc->cs_base); |
4459 |
} |
4460 |
} |
4461 |
if (dc->tf) {
|
4462 |
gen_op_raise_exception(EXCP01_SSTP); |
4463 |
} |
4464 |
the_end:
|
4465 |
if (dc->is_jmp != DISAS_TB_JUMP) {
|
4466 |
/* indicate that the hash table must be used to find the next TB */
|
4467 |
gen_op_movl_T0_0(); |
4468 |
gen_op_exit_tb(); |
4469 |
} |
4470 |
*gen_opc_ptr = INDEX_op_end; |
4471 |
/* we don't forget to fill the last values */
|
4472 |
if (search_pc) {
|
4473 |
j = gen_opc_ptr - gen_opc_buf; |
4474 |
lj++; |
4475 |
while (lj <= j)
|
4476 |
gen_opc_instr_start[lj++] = 0;
|
4477 |
} |
4478 |
|
4479 |
#ifdef DEBUG_DISAS
|
4480 |
if (loglevel) {
|
4481 |
fprintf(logfile, "----------------\n");
|
4482 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
4483 |
disas(logfile, pc_start, pc_ptr - pc_start, 0, !dc->code32);
|
4484 |
fprintf(logfile, "\n");
|
4485 |
|
4486 |
fprintf(logfile, "OP:\n");
|
4487 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
4488 |
fprintf(logfile, "\n");
|
4489 |
} |
4490 |
#endif
|
4491 |
|
4492 |
/* optimize flag computations */
|
4493 |
optimize_flags(gen_opc_buf, gen_opc_ptr - gen_opc_buf); |
4494 |
|
4495 |
#ifdef DEBUG_DISAS
|
4496 |
if (loglevel) {
|
4497 |
fprintf(logfile, "AFTER FLAGS OPT:\n");
|
4498 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
4499 |
fprintf(logfile, "\n");
|
4500 |
} |
4501 |
#endif
|
4502 |
if (!search_pc)
|
4503 |
tb->size = pc_ptr - pc_start; |
4504 |
return 0; |
4505 |
} |
4506 |
|
4507 |
int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
4508 |
{ |
4509 |
return gen_intermediate_code_internal(env, tb, 0); |
4510 |
} |
4511 |
|
4512 |
int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
4513 |
{ |
4514 |
return gen_intermediate_code_internal(env, tb, 1); |
4515 |
} |
4516 |
|