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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 "disas.h" |
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#define DEBUG_DISAS
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#define IN_OP_I386
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#include "cpu-i386.h" |
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#ifndef offsetof
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#define offsetof(type, field) ((size_t) &((type *)0)->field) |
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#endif
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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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int __op_param1, __op_param2, __op_param3;
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#ifdef __i386__
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static inline void flush_icache_range(unsigned long start, unsigned long stop) |
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{
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} |
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#endif
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#ifdef __s390__
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static inline void flush_icache_range(unsigned long start, unsigned long stop) |
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{
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} |
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#endif
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#ifdef __ia64__
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static inline void flush_icache_range(unsigned long start, unsigned long stop) |
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{
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} |
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#endif
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#ifdef __powerpc__
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#define MIN_CACHE_LINE_SIZE 8 /* conservative value */ |
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static void inline flush_icache_range(unsigned long start, unsigned long stop) |
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{
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unsigned long p; |
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p = start & ~(MIN_CACHE_LINE_SIZE - 1);
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stop = (stop + MIN_CACHE_LINE_SIZE - 1) & ~(MIN_CACHE_LINE_SIZE - 1); |
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for (p = start; p < stop; p += MIN_CACHE_LINE_SIZE) {
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asm ("dcbst 0,%0;" : : "r"(p) : "memory"); |
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} |
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asm ("sync"); |
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for (p = start; p < stop; p += MIN_CACHE_LINE_SIZE) {
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asm ("icbi 0,%0; sync;" : : "r"(p) : "memory"); |
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} |
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asm ("sync"); |
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asm ("isync"); |
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} |
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#endif
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#ifdef __alpha__
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static inline void flush_icache_range(unsigned long start, unsigned long stop) |
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{
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asm ("imb"); |
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} |
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#endif
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#ifdef __sparc__
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static void inline flush_icache_range(unsigned long start, unsigned long stop) |
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{
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unsigned long p; |
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p = start & ~(8UL - 1UL); |
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stop = (stop + (8UL - 1UL)) & ~(8UL - 1UL); |
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for (; p < stop; p += 8) |
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__asm__ __volatile__("flush\t%0" : : "r" (p)); |
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} |
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#endif
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extern FILE *logfile;
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extern int loglevel; |
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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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#define PREFIX_FWAIT 0x20 |
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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 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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} 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) 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 "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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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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|
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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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|
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static GenOpFunc *gen_op_movl_A0_reg[8] = { |
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gen_op_movl_A0_EAX, |
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gen_op_movl_A0_ECX, |
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gen_op_movl_A0_EDX, |
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gen_op_movl_A0_EBX, |
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gen_op_movl_A0_ESP, |
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gen_op_movl_A0_EBP, |
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gen_op_movl_A0_ESI, |
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gen_op_movl_A0_EDI, |
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}; |
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|
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static GenOpFunc *gen_op_addl_A0_reg_sN[4][8] = { |
| 370 |
[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, |
| 375 |
gen_op_addl_A0_ESP, |
| 376 |
gen_op_addl_A0_EBP, |
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gen_op_addl_A0_ESI, |
| 378 |
gen_op_addl_A0_EDI, |
| 379 |
}, |
| 380 |
[1] = {
|
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gen_op_addl_A0_EAX_s1, |
| 382 |
gen_op_addl_A0_ECX_s1, |
| 383 |
gen_op_addl_A0_EDX_s1, |
| 384 |
gen_op_addl_A0_EBX_s1, |
| 385 |
gen_op_addl_A0_ESP_s1, |
| 386 |
gen_op_addl_A0_EBP_s1, |
| 387 |
gen_op_addl_A0_ESI_s1, |
| 388 |
gen_op_addl_A0_EDI_s1, |
| 389 |
}, |
| 390 |
[2] = {
|
| 391 |
gen_op_addl_A0_EAX_s2, |
| 392 |
gen_op_addl_A0_ECX_s2, |
| 393 |
gen_op_addl_A0_EDX_s2, |
| 394 |
gen_op_addl_A0_EBX_s2, |
| 395 |
gen_op_addl_A0_ESP_s2, |
| 396 |
gen_op_addl_A0_EBP_s2, |
| 397 |
gen_op_addl_A0_ESI_s2, |
| 398 |
gen_op_addl_A0_EDI_s2, |
| 399 |
}, |
| 400 |
[3] = {
|
| 401 |
gen_op_addl_A0_EAX_s3, |
| 402 |
gen_op_addl_A0_ECX_s3, |
| 403 |
gen_op_addl_A0_EDX_s3, |
| 404 |
gen_op_addl_A0_EBX_s3, |
| 405 |
gen_op_addl_A0_ESP_s3, |
| 406 |
gen_op_addl_A0_EBP_s3, |
| 407 |
gen_op_addl_A0_ESI_s3, |
| 408 |
gen_op_addl_A0_EDI_s3, |
| 409 |
}, |
| 410 |
}; |
| 411 |
|
| 412 |
static GenOpFunc *gen_op_cmov_reg_T1_T0[2][8] = { |
| 413 |
[0] = {
|
| 414 |
gen_op_cmovw_EAX_T1_T0, |
| 415 |
gen_op_cmovw_ECX_T1_T0, |
| 416 |
gen_op_cmovw_EDX_T1_T0, |
| 417 |
gen_op_cmovw_EBX_T1_T0, |
| 418 |
gen_op_cmovw_ESP_T1_T0, |
| 419 |
gen_op_cmovw_EBP_T1_T0, |
| 420 |
gen_op_cmovw_ESI_T1_T0, |
| 421 |
gen_op_cmovw_EDI_T1_T0, |
| 422 |
}, |
| 423 |
[1] = {
|
| 424 |
gen_op_cmovl_EAX_T1_T0, |
| 425 |
gen_op_cmovl_ECX_T1_T0, |
| 426 |
gen_op_cmovl_EDX_T1_T0, |
| 427 |
gen_op_cmovl_EBX_T1_T0, |
| 428 |
gen_op_cmovl_ESP_T1_T0, |
| 429 |
gen_op_cmovl_EBP_T1_T0, |
| 430 |
gen_op_cmovl_ESI_T1_T0, |
| 431 |
gen_op_cmovl_EDI_T1_T0, |
| 432 |
}, |
| 433 |
}; |
| 434 |
|
| 435 |
static GenOpFunc *gen_op_arith_T0_T1_cc[8] = { |
| 436 |
gen_op_addl_T0_T1_cc, |
| 437 |
gen_op_orl_T0_T1_cc, |
| 438 |
NULL,
|
| 439 |
NULL,
|
| 440 |
gen_op_andl_T0_T1_cc, |
| 441 |
gen_op_subl_T0_T1_cc, |
| 442 |
gen_op_xorl_T0_T1_cc, |
| 443 |
gen_op_cmpl_T0_T1_cc, |
| 444 |
}; |
| 445 |
|
| 446 |
static GenOpFunc *gen_op_arithc_T0_T1_cc[3][2] = { |
| 447 |
[OT_BYTE] = {
|
| 448 |
gen_op_adcb_T0_T1_cc, |
| 449 |
gen_op_sbbb_T0_T1_cc, |
| 450 |
}, |
| 451 |
[OT_WORD] = {
|
| 452 |
gen_op_adcw_T0_T1_cc, |
| 453 |
gen_op_sbbw_T0_T1_cc, |
| 454 |
}, |
| 455 |
[OT_LONG] = {
|
| 456 |
gen_op_adcl_T0_T1_cc, |
| 457 |
gen_op_sbbl_T0_T1_cc, |
| 458 |
}, |
| 459 |
}; |
| 460 |
|
| 461 |
static const int cc_op_arithb[8] = { |
| 462 |
CC_OP_ADDB, |
| 463 |
CC_OP_LOGICB, |
| 464 |
CC_OP_ADDB, |
| 465 |
CC_OP_SUBB, |
| 466 |
CC_OP_LOGICB, |
| 467 |
CC_OP_SUBB, |
| 468 |
CC_OP_LOGICB, |
| 469 |
CC_OP_SUBB, |
| 470 |
}; |
| 471 |
|
| 472 |
static GenOpFunc *gen_op_cmpxchg_T0_T1_EAX_cc[3] = { |
| 473 |
gen_op_cmpxchgb_T0_T1_EAX_cc, |
| 474 |
gen_op_cmpxchgw_T0_T1_EAX_cc, |
| 475 |
gen_op_cmpxchgl_T0_T1_EAX_cc, |
| 476 |
}; |
| 477 |
|
| 478 |
static GenOpFunc *gen_op_shift_T0_T1_cc[3][8] = { |
| 479 |
[OT_BYTE] = {
|
| 480 |
gen_op_rolb_T0_T1_cc, |
| 481 |
gen_op_rorb_T0_T1_cc, |
| 482 |
gen_op_rclb_T0_T1_cc, |
| 483 |
gen_op_rcrb_T0_T1_cc, |
| 484 |
gen_op_shlb_T0_T1_cc, |
| 485 |
gen_op_shrb_T0_T1_cc, |
| 486 |
gen_op_shlb_T0_T1_cc, |
| 487 |
gen_op_sarb_T0_T1_cc, |
| 488 |
}, |
| 489 |
[OT_WORD] = {
|
| 490 |
gen_op_rolw_T0_T1_cc, |
| 491 |
gen_op_rorw_T0_T1_cc, |
| 492 |
gen_op_rclw_T0_T1_cc, |
| 493 |
gen_op_rcrw_T0_T1_cc, |
| 494 |
gen_op_shlw_T0_T1_cc, |
| 495 |
gen_op_shrw_T0_T1_cc, |
| 496 |
gen_op_shlw_T0_T1_cc, |
| 497 |
gen_op_sarw_T0_T1_cc, |
| 498 |
}, |
| 499 |
[OT_LONG] = {
|
| 500 |
gen_op_roll_T0_T1_cc, |
| 501 |
gen_op_rorl_T0_T1_cc, |
| 502 |
gen_op_rcll_T0_T1_cc, |
| 503 |
gen_op_rcrl_T0_T1_cc, |
| 504 |
gen_op_shll_T0_T1_cc, |
| 505 |
gen_op_shrl_T0_T1_cc, |
| 506 |
gen_op_shll_T0_T1_cc, |
| 507 |
gen_op_sarl_T0_T1_cc, |
| 508 |
}, |
| 509 |
}; |
| 510 |
|
| 511 |
static GenOpFunc1 *gen_op_shiftd_T0_T1_im_cc[2][2] = { |
| 512 |
[0] = {
|
| 513 |
gen_op_shldw_T0_T1_im_cc, |
| 514 |
gen_op_shrdw_T0_T1_im_cc, |
| 515 |
}, |
| 516 |
[1] = {
|
| 517 |
gen_op_shldl_T0_T1_im_cc, |
| 518 |
gen_op_shrdl_T0_T1_im_cc, |
| 519 |
}, |
| 520 |
}; |
| 521 |
|
| 522 |
static GenOpFunc *gen_op_shiftd_T0_T1_ECX_cc[2][2] = { |
| 523 |
[0] = {
|
| 524 |
gen_op_shldw_T0_T1_ECX_cc, |
| 525 |
gen_op_shrdw_T0_T1_ECX_cc, |
| 526 |
}, |
| 527 |
[1] = {
|
| 528 |
gen_op_shldl_T0_T1_ECX_cc, |
| 529 |
gen_op_shrdl_T0_T1_ECX_cc, |
| 530 |
}, |
| 531 |
}; |
| 532 |
|
| 533 |
static GenOpFunc *gen_op_btx_T0_T1_cc[2][4] = { |
| 534 |
[0] = {
|
| 535 |
gen_op_btw_T0_T1_cc, |
| 536 |
gen_op_btsw_T0_T1_cc, |
| 537 |
gen_op_btrw_T0_T1_cc, |
| 538 |
gen_op_btcw_T0_T1_cc, |
| 539 |
}, |
| 540 |
[1] = {
|
| 541 |
gen_op_btl_T0_T1_cc, |
| 542 |
gen_op_btsl_T0_T1_cc, |
| 543 |
gen_op_btrl_T0_T1_cc, |
| 544 |
gen_op_btcl_T0_T1_cc, |
| 545 |
}, |
| 546 |
}; |
| 547 |
|
| 548 |
static GenOpFunc *gen_op_bsx_T0_cc[2][2] = { |
| 549 |
[0] = {
|
| 550 |
gen_op_bsfw_T0_cc, |
| 551 |
gen_op_bsrw_T0_cc, |
| 552 |
}, |
| 553 |
[1] = {
|
| 554 |
gen_op_bsfl_T0_cc, |
| 555 |
gen_op_bsrl_T0_cc, |
| 556 |
}, |
| 557 |
}; |
| 558 |
|
| 559 |
static GenOpFunc *gen_op_lds_T0_A0[3] = { |
| 560 |
gen_op_ldsb_T0_A0, |
| 561 |
gen_op_ldsw_T0_A0, |
| 562 |
}; |
| 563 |
|
| 564 |
static GenOpFunc *gen_op_ldu_T0_A0[3] = { |
| 565 |
gen_op_ldub_T0_A0, |
| 566 |
gen_op_lduw_T0_A0, |
| 567 |
}; |
| 568 |
|
| 569 |
/* sign does not matter */
|
| 570 |
static GenOpFunc *gen_op_ld_T0_A0[3] = { |
| 571 |
gen_op_ldub_T0_A0, |
| 572 |
gen_op_lduw_T0_A0, |
| 573 |
gen_op_ldl_T0_A0, |
| 574 |
}; |
| 575 |
|
| 576 |
static GenOpFunc *gen_op_ld_T1_A0[3] = { |
| 577 |
gen_op_ldub_T1_A0, |
| 578 |
gen_op_lduw_T1_A0, |
| 579 |
gen_op_ldl_T1_A0, |
| 580 |
}; |
| 581 |
|
| 582 |
static GenOpFunc *gen_op_st_T0_A0[3] = { |
| 583 |
gen_op_stb_T0_A0, |
| 584 |
gen_op_stw_T0_A0, |
| 585 |
gen_op_stl_T0_A0, |
| 586 |
}; |
| 587 |
|
| 588 |
/* the _a32 and _a16 string operations use A0 as the base register. */
|
| 589 |
|
| 590 |
#define STRINGOP(x) \
|
| 591 |
gen_op_ ## x ## b_fast, \ |
| 592 |
gen_op_ ## x ## w_fast, \ |
| 593 |
gen_op_ ## x ## l_fast, \ |
| 594 |
gen_op_ ## x ## b_a32, \ |
| 595 |
gen_op_ ## x ## w_a32, \ |
| 596 |
gen_op_ ## x ## l_a32, \ |
| 597 |
gen_op_ ## x ## b_a16, \ |
| 598 |
gen_op_ ## x ## w_a16, \ |
| 599 |
gen_op_ ## x ## l_a16, |
| 600 |
|
| 601 |
static GenOpFunc *gen_op_movs[9 * 2] = { |
| 602 |
STRINGOP(movs) |
| 603 |
STRINGOP(rep_movs) |
| 604 |
}; |
| 605 |
|
| 606 |
static GenOpFunc *gen_op_stos[9 * 2] = { |
| 607 |
STRINGOP(stos) |
| 608 |
STRINGOP(rep_stos) |
| 609 |
}; |
| 610 |
|
| 611 |
static GenOpFunc *gen_op_lods[9 * 2] = { |
| 612 |
STRINGOP(lods) |
| 613 |
STRINGOP(rep_lods) |
| 614 |
}; |
| 615 |
|
| 616 |
static GenOpFunc *gen_op_scas[9 * 3] = { |
| 617 |
STRINGOP(scas) |
| 618 |
STRINGOP(repz_scas) |
| 619 |
STRINGOP(repnz_scas) |
| 620 |
}; |
| 621 |
|
| 622 |
static GenOpFunc *gen_op_cmps[9 * 3] = { |
| 623 |
STRINGOP(cmps) |
| 624 |
STRINGOP(repz_cmps) |
| 625 |
STRINGOP(repnz_cmps) |
| 626 |
}; |
| 627 |
|
| 628 |
static GenOpFunc *gen_op_ins[9 * 2] = { |
| 629 |
STRINGOP(ins) |
| 630 |
STRINGOP(rep_ins) |
| 631 |
}; |
| 632 |
|
| 633 |
|
| 634 |
static GenOpFunc *gen_op_outs[9 * 2] = { |
| 635 |
STRINGOP(outs) |
| 636 |
STRINGOP(rep_outs) |
| 637 |
}; |
| 638 |
|
| 639 |
|
| 640 |
static inline void gen_string_ds(DisasContext *s, int ot, GenOpFunc **func) |
| 641 |
{
|
| 642 |
int index, override;
|
| 643 |
|
| 644 |
override = s->override; |
| 645 |
if (s->aflag) {
|
| 646 |
/* 32 bit address */
|
| 647 |
if (s->addseg && override < 0) |
| 648 |
override = R_DS; |
| 649 |
if (override >= 0) { |
| 650 |
gen_op_movl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 651 |
index = 3 + ot;
|
| 652 |
} else {
|
| 653 |
index = ot; |
| 654 |
} |
| 655 |
} else {
|
| 656 |
if (override < 0) |
| 657 |
override = R_DS; |
| 658 |
gen_op_movl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 659 |
/* 16 address, always override */
|
| 660 |
index = 6 + ot;
|
| 661 |
} |
| 662 |
func[index](); |
| 663 |
} |
| 664 |
|
| 665 |
static inline void gen_string_es(DisasContext *s, int ot, GenOpFunc **func) |
| 666 |
{
|
| 667 |
int index;
|
| 668 |
|
| 669 |
if (s->aflag) {
|
| 670 |
if (s->addseg) {
|
| 671 |
index = 3 + ot;
|
| 672 |
} else {
|
| 673 |
index = ot; |
| 674 |
} |
| 675 |
} else {
|
| 676 |
index = 6 + ot;
|
| 677 |
} |
| 678 |
func[index](); |
| 679 |
} |
| 680 |
|
| 681 |
|
| 682 |
static GenOpFunc *gen_op_in[3] = { |
| 683 |
gen_op_inb_T0_T1, |
| 684 |
gen_op_inw_T0_T1, |
| 685 |
gen_op_inl_T0_T1, |
| 686 |
}; |
| 687 |
|
| 688 |
static GenOpFunc *gen_op_out[3] = { |
| 689 |
gen_op_outb_T0_T1, |
| 690 |
gen_op_outw_T0_T1, |
| 691 |
gen_op_outl_T0_T1, |
| 692 |
}; |
| 693 |
|
| 694 |
enum {
|
| 695 |
JCC_O, |
| 696 |
JCC_B, |
| 697 |
JCC_Z, |
| 698 |
JCC_BE, |
| 699 |
JCC_S, |
| 700 |
JCC_P, |
| 701 |
JCC_L, |
| 702 |
JCC_LE, |
| 703 |
}; |
| 704 |
|
| 705 |
static GenOpFunc2 *gen_jcc_slow[8] = { |
| 706 |
gen_op_jo_cc, |
| 707 |
gen_op_jb_cc, |
| 708 |
gen_op_jz_cc, |
| 709 |
gen_op_jbe_cc, |
| 710 |
gen_op_js_cc, |
| 711 |
gen_op_jp_cc, |
| 712 |
gen_op_jl_cc, |
| 713 |
gen_op_jle_cc, |
| 714 |
}; |
| 715 |
|
| 716 |
static GenOpFunc2 *gen_jcc_sub[3][8] = { |
| 717 |
[OT_BYTE] = {
|
| 718 |
NULL,
|
| 719 |
gen_op_jb_subb, |
| 720 |
gen_op_jz_subb, |
| 721 |
gen_op_jbe_subb, |
| 722 |
gen_op_js_subb, |
| 723 |
NULL,
|
| 724 |
gen_op_jl_subb, |
| 725 |
gen_op_jle_subb, |
| 726 |
}, |
| 727 |
[OT_WORD] = {
|
| 728 |
NULL,
|
| 729 |
gen_op_jb_subw, |
| 730 |
gen_op_jz_subw, |
| 731 |
gen_op_jbe_subw, |
| 732 |
gen_op_js_subw, |
| 733 |
NULL,
|
| 734 |
gen_op_jl_subw, |
| 735 |
gen_op_jle_subw, |
| 736 |
}, |
| 737 |
[OT_LONG] = {
|
| 738 |
NULL,
|
| 739 |
gen_op_jb_subl, |
| 740 |
gen_op_jz_subl, |
| 741 |
gen_op_jbe_subl, |
| 742 |
gen_op_js_subl, |
| 743 |
NULL,
|
| 744 |
gen_op_jl_subl, |
| 745 |
gen_op_jle_subl, |
| 746 |
}, |
| 747 |
}; |
| 748 |
static GenOpFunc2 *gen_op_loop[2][4] = { |
| 749 |
[0] = {
|
| 750 |
gen_op_loopnzw, |
| 751 |
gen_op_loopzw, |
| 752 |
gen_op_loopw, |
| 753 |
gen_op_jecxzw, |
| 754 |
}, |
| 755 |
[1] = {
|
| 756 |
gen_op_loopnzl, |
| 757 |
gen_op_loopzl, |
| 758 |
gen_op_loopl, |
| 759 |
gen_op_jecxzl, |
| 760 |
}, |
| 761 |
}; |
| 762 |
|
| 763 |
static GenOpFunc *gen_setcc_slow[8] = { |
| 764 |
gen_op_seto_T0_cc, |
| 765 |
gen_op_setb_T0_cc, |
| 766 |
gen_op_setz_T0_cc, |
| 767 |
gen_op_setbe_T0_cc, |
| 768 |
gen_op_sets_T0_cc, |
| 769 |
gen_op_setp_T0_cc, |
| 770 |
gen_op_setl_T0_cc, |
| 771 |
gen_op_setle_T0_cc, |
| 772 |
}; |
| 773 |
|
| 774 |
static GenOpFunc *gen_setcc_sub[3][8] = { |
| 775 |
[OT_BYTE] = {
|
| 776 |
NULL,
|
| 777 |
gen_op_setb_T0_subb, |
| 778 |
gen_op_setz_T0_subb, |
| 779 |
gen_op_setbe_T0_subb, |
| 780 |
gen_op_sets_T0_subb, |
| 781 |
NULL,
|
| 782 |
gen_op_setl_T0_subb, |
| 783 |
gen_op_setle_T0_subb, |
| 784 |
}, |
| 785 |
[OT_WORD] = {
|
| 786 |
NULL,
|
| 787 |
gen_op_setb_T0_subw, |
| 788 |
gen_op_setz_T0_subw, |
| 789 |
gen_op_setbe_T0_subw, |
| 790 |
gen_op_sets_T0_subw, |
| 791 |
NULL,
|
| 792 |
gen_op_setl_T0_subw, |
| 793 |
gen_op_setle_T0_subw, |
| 794 |
}, |
| 795 |
[OT_LONG] = {
|
| 796 |
NULL,
|
| 797 |
gen_op_setb_T0_subl, |
| 798 |
gen_op_setz_T0_subl, |
| 799 |
gen_op_setbe_T0_subl, |
| 800 |
gen_op_sets_T0_subl, |
| 801 |
NULL,
|
| 802 |
gen_op_setl_T0_subl, |
| 803 |
gen_op_setle_T0_subl, |
| 804 |
}, |
| 805 |
}; |
| 806 |
|
| 807 |
static GenOpFunc *gen_op_fp_arith_ST0_FT0[8] = { |
| 808 |
gen_op_fadd_ST0_FT0, |
| 809 |
gen_op_fmul_ST0_FT0, |
| 810 |
gen_op_fcom_ST0_FT0, |
| 811 |
gen_op_fcom_ST0_FT0, |
| 812 |
gen_op_fsub_ST0_FT0, |
| 813 |
gen_op_fsubr_ST0_FT0, |
| 814 |
gen_op_fdiv_ST0_FT0, |
| 815 |
gen_op_fdivr_ST0_FT0, |
| 816 |
}; |
| 817 |
|
| 818 |
/* NOTE the exception in "r" op ordering */
|
| 819 |
static GenOpFunc1 *gen_op_fp_arith_STN_ST0[8] = { |
| 820 |
gen_op_fadd_STN_ST0, |
| 821 |
gen_op_fmul_STN_ST0, |
| 822 |
NULL,
|
| 823 |
NULL,
|
| 824 |
gen_op_fsubr_STN_ST0, |
| 825 |
gen_op_fsub_STN_ST0, |
| 826 |
gen_op_fdivr_STN_ST0, |
| 827 |
gen_op_fdiv_STN_ST0, |
| 828 |
}; |
| 829 |
|
| 830 |
static void gen_op(DisasContext *s1, int op, int ot, int d, int s) |
| 831 |
{
|
| 832 |
if (d != OR_TMP0)
|
| 833 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 834 |
if (s != OR_TMP1)
|
| 835 |
gen_op_mov_TN_reg[ot][1][s]();
|
| 836 |
if (op == OP_ADCL || op == OP_SBBL) {
|
| 837 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 838 |
gen_op_set_cc_op(s1->cc_op); |
| 839 |
gen_op_arithc_T0_T1_cc[ot][op - OP_ADCL](); |
| 840 |
s1->cc_op = CC_OP_DYNAMIC; |
| 841 |
} else {
|
| 842 |
gen_op_arith_T0_T1_cc[op](); |
| 843 |
s1->cc_op = cc_op_arithb[op] + ot; |
| 844 |
} |
| 845 |
if (d != OR_TMP0 && op != OP_CMPL)
|
| 846 |
gen_op_mov_reg_T0[ot][d](); |
| 847 |
} |
| 848 |
|
| 849 |
static void gen_opi(DisasContext *s1, int op, int ot, int d, int c) |
| 850 |
{
|
| 851 |
gen_op_movl_T1_im(c); |
| 852 |
gen_op(s1, op, ot, d, OR_TMP1); |
| 853 |
} |
| 854 |
|
| 855 |
static void gen_inc(DisasContext *s1, int ot, int d, int c) |
| 856 |
{
|
| 857 |
if (d != OR_TMP0)
|
| 858 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 859 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 860 |
gen_op_set_cc_op(s1->cc_op); |
| 861 |
if (c > 0) { |
| 862 |
gen_op_incl_T0_cc(); |
| 863 |
s1->cc_op = CC_OP_INCB + ot; |
| 864 |
} else {
|
| 865 |
gen_op_decl_T0_cc(); |
| 866 |
s1->cc_op = CC_OP_DECB + ot; |
| 867 |
} |
| 868 |
if (d != OR_TMP0)
|
| 869 |
gen_op_mov_reg_T0[ot][d](); |
| 870 |
} |
| 871 |
|
| 872 |
static void gen_shift(DisasContext *s1, int op, int ot, int d, int s) |
| 873 |
{
|
| 874 |
if (d != OR_TMP0)
|
| 875 |
gen_op_mov_TN_reg[ot][0][d]();
|
| 876 |
if (s != OR_TMP1)
|
| 877 |
gen_op_mov_TN_reg[ot][1][s]();
|
| 878 |
/* for zero counts, flags are not updated, so must do it dynamically */
|
| 879 |
if (s1->cc_op != CC_OP_DYNAMIC)
|
| 880 |
gen_op_set_cc_op(s1->cc_op); |
| 881 |
|
| 882 |
gen_op_shift_T0_T1_cc[ot][op](); |
| 883 |
|
| 884 |
if (d != OR_TMP0)
|
| 885 |
gen_op_mov_reg_T0[ot][d](); |
| 886 |
s1->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 887 |
} |
| 888 |
|
| 889 |
static void gen_shifti(DisasContext *s1, int op, int ot, int d, int c) |
| 890 |
{
|
| 891 |
/* currently not optimized */
|
| 892 |
gen_op_movl_T1_im(c); |
| 893 |
gen_shift(s1, op, ot, d, OR_TMP1); |
| 894 |
} |
| 895 |
|
| 896 |
static void gen_lea_modrm(DisasContext *s, int modrm, int *reg_ptr, int *offset_ptr) |
| 897 |
{
|
| 898 |
int havesib;
|
| 899 |
int base, disp;
|
| 900 |
int index;
|
| 901 |
int scale;
|
| 902 |
int opreg;
|
| 903 |
int mod, rm, code, override, must_add_seg;
|
| 904 |
|
| 905 |
override = s->override; |
| 906 |
must_add_seg = s->addseg; |
| 907 |
if (override >= 0) |
| 908 |
must_add_seg = 1;
|
| 909 |
mod = (modrm >> 6) & 3; |
| 910 |
rm = modrm & 7;
|
| 911 |
|
| 912 |
if (s->aflag) {
|
| 913 |
|
| 914 |
havesib = 0;
|
| 915 |
base = rm; |
| 916 |
index = 0;
|
| 917 |
scale = 0;
|
| 918 |
|
| 919 |
if (base == 4) { |
| 920 |
havesib = 1;
|
| 921 |
code = ldub(s->pc++); |
| 922 |
scale = (code >> 6) & 3; |
| 923 |
index = (code >> 3) & 7; |
| 924 |
base = code & 7;
|
| 925 |
} |
| 926 |
|
| 927 |
switch (mod) {
|
| 928 |
case 0: |
| 929 |
if (base == 5) { |
| 930 |
base = -1;
|
| 931 |
disp = ldl(s->pc); |
| 932 |
s->pc += 4;
|
| 933 |
} else {
|
| 934 |
disp = 0;
|
| 935 |
} |
| 936 |
break;
|
| 937 |
case 1: |
| 938 |
disp = (int8_t)ldub(s->pc++); |
| 939 |
break;
|
| 940 |
default:
|
| 941 |
case 2: |
| 942 |
disp = ldl(s->pc); |
| 943 |
s->pc += 4;
|
| 944 |
break;
|
| 945 |
} |
| 946 |
|
| 947 |
if (base >= 0) { |
| 948 |
gen_op_movl_A0_reg[base](); |
| 949 |
if (disp != 0) |
| 950 |
gen_op_addl_A0_im(disp); |
| 951 |
} else {
|
| 952 |
gen_op_movl_A0_im(disp); |
| 953 |
} |
| 954 |
if (havesib && (index != 4 || scale != 0)) { |
| 955 |
gen_op_addl_A0_reg_sN[scale][index](); |
| 956 |
} |
| 957 |
if (must_add_seg) {
|
| 958 |
if (override < 0) { |
| 959 |
if (base == R_EBP || base == R_ESP)
|
| 960 |
override = R_SS; |
| 961 |
else
|
| 962 |
override = R_DS; |
| 963 |
} |
| 964 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 965 |
} |
| 966 |
} else {
|
| 967 |
switch (mod) {
|
| 968 |
case 0: |
| 969 |
if (rm == 6) { |
| 970 |
disp = lduw(s->pc); |
| 971 |
s->pc += 2;
|
| 972 |
gen_op_movl_A0_im(disp); |
| 973 |
rm = 0; /* avoid SS override */ |
| 974 |
goto no_rm;
|
| 975 |
} else {
|
| 976 |
disp = 0;
|
| 977 |
} |
| 978 |
break;
|
| 979 |
case 1: |
| 980 |
disp = (int8_t)ldub(s->pc++); |
| 981 |
break;
|
| 982 |
default:
|
| 983 |
case 2: |
| 984 |
disp = lduw(s->pc); |
| 985 |
s->pc += 2;
|
| 986 |
break;
|
| 987 |
} |
| 988 |
switch(rm) {
|
| 989 |
case 0: |
| 990 |
gen_op_movl_A0_reg[R_EBX](); |
| 991 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
| 992 |
break;
|
| 993 |
case 1: |
| 994 |
gen_op_movl_A0_reg[R_EBX](); |
| 995 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
| 996 |
break;
|
| 997 |
case 2: |
| 998 |
gen_op_movl_A0_reg[R_EBP](); |
| 999 |
gen_op_addl_A0_reg_sN[0][R_ESI]();
|
| 1000 |
break;
|
| 1001 |
case 3: |
| 1002 |
gen_op_movl_A0_reg[R_EBP](); |
| 1003 |
gen_op_addl_A0_reg_sN[0][R_EDI]();
|
| 1004 |
break;
|
| 1005 |
case 4: |
| 1006 |
gen_op_movl_A0_reg[R_ESI](); |
| 1007 |
break;
|
| 1008 |
case 5: |
| 1009 |
gen_op_movl_A0_reg[R_EDI](); |
| 1010 |
break;
|
| 1011 |
case 6: |
| 1012 |
gen_op_movl_A0_reg[R_EBP](); |
| 1013 |
break;
|
| 1014 |
default:
|
| 1015 |
case 7: |
| 1016 |
gen_op_movl_A0_reg[R_EBX](); |
| 1017 |
break;
|
| 1018 |
} |
| 1019 |
if (disp != 0) |
| 1020 |
gen_op_addl_A0_im(disp); |
| 1021 |
gen_op_andl_A0_ffff(); |
| 1022 |
no_rm:
|
| 1023 |
if (must_add_seg) {
|
| 1024 |
if (override < 0) { |
| 1025 |
if (rm == 2 || rm == 3 || rm == 6) |
| 1026 |
override = R_SS; |
| 1027 |
else
|
| 1028 |
override = R_DS; |
| 1029 |
} |
| 1030 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 1031 |
} |
| 1032 |
} |
| 1033 |
|
| 1034 |
opreg = OR_A0; |
| 1035 |
disp = 0;
|
| 1036 |
*reg_ptr = opreg; |
| 1037 |
*offset_ptr = disp; |
| 1038 |
} |
| 1039 |
|
| 1040 |
/* generate modrm memory load or store of 'reg'. TMP0 is used if reg !=
|
| 1041 |
OR_TMP0 */
|
| 1042 |
static void gen_ldst_modrm(DisasContext *s, int modrm, int ot, int reg, int is_store) |
| 1043 |
{
|
| 1044 |
int mod, rm, opreg, disp;
|
| 1045 |
|
| 1046 |
mod = (modrm >> 6) & 3; |
| 1047 |
rm = modrm & 7;
|
| 1048 |
if (mod == 3) { |
| 1049 |
if (is_store) {
|
| 1050 |
if (reg != OR_TMP0)
|
| 1051 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1052 |
gen_op_mov_reg_T0[ot][rm](); |
| 1053 |
} else {
|
| 1054 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1055 |
if (reg != OR_TMP0)
|
| 1056 |
gen_op_mov_reg_T0[ot][reg](); |
| 1057 |
} |
| 1058 |
} else {
|
| 1059 |
gen_lea_modrm(s, modrm, &opreg, &disp); |
| 1060 |
if (is_store) {
|
| 1061 |
if (reg != OR_TMP0)
|
| 1062 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1063 |
gen_op_st_T0_A0[ot](); |
| 1064 |
} else {
|
| 1065 |
gen_op_ld_T0_A0[ot](); |
| 1066 |
if (reg != OR_TMP0)
|
| 1067 |
gen_op_mov_reg_T0[ot][reg](); |
| 1068 |
} |
| 1069 |
} |
| 1070 |
} |
| 1071 |
|
| 1072 |
static inline uint32_t insn_get(DisasContext *s, int ot) |
| 1073 |
{
|
| 1074 |
uint32_t ret; |
| 1075 |
|
| 1076 |
switch(ot) {
|
| 1077 |
case OT_BYTE:
|
| 1078 |
ret = ldub(s->pc); |
| 1079 |
s->pc++; |
| 1080 |
break;
|
| 1081 |
case OT_WORD:
|
| 1082 |
ret = lduw(s->pc); |
| 1083 |
s->pc += 2;
|
| 1084 |
break;
|
| 1085 |
default:
|
| 1086 |
case OT_LONG:
|
| 1087 |
ret = ldl(s->pc); |
| 1088 |
s->pc += 4;
|
| 1089 |
break;
|
| 1090 |
} |
| 1091 |
return ret;
|
| 1092 |
} |
| 1093 |
|
| 1094 |
static inline void gen_jcc(DisasContext *s, int b, int val, int next_eip) |
| 1095 |
{
|
| 1096 |
int inv, jcc_op;
|
| 1097 |
GenOpFunc2 *func; |
| 1098 |
|
| 1099 |
inv = b & 1;
|
| 1100 |
jcc_op = (b >> 1) & 7; |
| 1101 |
switch(s->cc_op) {
|
| 1102 |
/* we optimize the cmp/jcc case */
|
| 1103 |
case CC_OP_SUBB:
|
| 1104 |
case CC_OP_SUBW:
|
| 1105 |
case CC_OP_SUBL:
|
| 1106 |
func = gen_jcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
| 1107 |
if (!func)
|
| 1108 |
goto slow_jcc;
|
| 1109 |
break;
|
| 1110 |
|
| 1111 |
/* some jumps are easy to compute */
|
| 1112 |
case CC_OP_ADDB:
|
| 1113 |
case CC_OP_ADDW:
|
| 1114 |
case CC_OP_ADDL:
|
| 1115 |
case CC_OP_ADCB:
|
| 1116 |
case CC_OP_ADCW:
|
| 1117 |
case CC_OP_ADCL:
|
| 1118 |
case CC_OP_SBBB:
|
| 1119 |
case CC_OP_SBBW:
|
| 1120 |
case CC_OP_SBBL:
|
| 1121 |
case CC_OP_LOGICB:
|
| 1122 |
case CC_OP_LOGICW:
|
| 1123 |
case CC_OP_LOGICL:
|
| 1124 |
case CC_OP_INCB:
|
| 1125 |
case CC_OP_INCW:
|
| 1126 |
case CC_OP_INCL:
|
| 1127 |
case CC_OP_DECB:
|
| 1128 |
case CC_OP_DECW:
|
| 1129 |
case CC_OP_DECL:
|
| 1130 |
case CC_OP_SHLB:
|
| 1131 |
case CC_OP_SHLW:
|
| 1132 |
case CC_OP_SHLL:
|
| 1133 |
case CC_OP_SARB:
|
| 1134 |
case CC_OP_SARW:
|
| 1135 |
case CC_OP_SARL:
|
| 1136 |
switch(jcc_op) {
|
| 1137 |
case JCC_Z:
|
| 1138 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1139 |
break;
|
| 1140 |
case JCC_S:
|
| 1141 |
func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1142 |
break;
|
| 1143 |
default:
|
| 1144 |
goto slow_jcc;
|
| 1145 |
} |
| 1146 |
break;
|
| 1147 |
default:
|
| 1148 |
slow_jcc:
|
| 1149 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 1150 |
gen_op_set_cc_op(s->cc_op); |
| 1151 |
func = gen_jcc_slow[jcc_op]; |
| 1152 |
break;
|
| 1153 |
} |
| 1154 |
if (!inv) {
|
| 1155 |
func(val, next_eip); |
| 1156 |
} else {
|
| 1157 |
func(next_eip, val); |
| 1158 |
} |
| 1159 |
} |
| 1160 |
|
| 1161 |
static void gen_setcc(DisasContext *s, int b) |
| 1162 |
{
|
| 1163 |
int inv, jcc_op;
|
| 1164 |
GenOpFunc *func; |
| 1165 |
|
| 1166 |
inv = b & 1;
|
| 1167 |
jcc_op = (b >> 1) & 7; |
| 1168 |
switch(s->cc_op) {
|
| 1169 |
/* we optimize the cmp/jcc case */
|
| 1170 |
case CC_OP_SUBB:
|
| 1171 |
case CC_OP_SUBW:
|
| 1172 |
case CC_OP_SUBL:
|
| 1173 |
func = gen_setcc_sub[s->cc_op - CC_OP_SUBB][jcc_op]; |
| 1174 |
if (!func)
|
| 1175 |
goto slow_jcc;
|
| 1176 |
break;
|
| 1177 |
|
| 1178 |
/* some jumps are easy to compute */
|
| 1179 |
case CC_OP_ADDB:
|
| 1180 |
case CC_OP_ADDW:
|
| 1181 |
case CC_OP_ADDL:
|
| 1182 |
case CC_OP_LOGICB:
|
| 1183 |
case CC_OP_LOGICW:
|
| 1184 |
case CC_OP_LOGICL:
|
| 1185 |
case CC_OP_INCB:
|
| 1186 |
case CC_OP_INCW:
|
| 1187 |
case CC_OP_INCL:
|
| 1188 |
case CC_OP_DECB:
|
| 1189 |
case CC_OP_DECW:
|
| 1190 |
case CC_OP_DECL:
|
| 1191 |
case CC_OP_SHLB:
|
| 1192 |
case CC_OP_SHLW:
|
| 1193 |
case CC_OP_SHLL:
|
| 1194 |
switch(jcc_op) {
|
| 1195 |
case JCC_Z:
|
| 1196 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1197 |
break;
|
| 1198 |
case JCC_S:
|
| 1199 |
func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
|
| 1200 |
break;
|
| 1201 |
default:
|
| 1202 |
goto slow_jcc;
|
| 1203 |
} |
| 1204 |
break;
|
| 1205 |
default:
|
| 1206 |
slow_jcc:
|
| 1207 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 1208 |
gen_op_set_cc_op(s->cc_op); |
| 1209 |
func = gen_setcc_slow[jcc_op]; |
| 1210 |
break;
|
| 1211 |
} |
| 1212 |
func(); |
| 1213 |
if (inv) {
|
| 1214 |
gen_op_xor_T0_1(); |
| 1215 |
} |
| 1216 |
} |
| 1217 |
|
| 1218 |
/* move T0 to seg_reg and compute if the CPU state may change */
|
| 1219 |
static void gen_movl_seg_T0(DisasContext *s, int seg_reg) |
| 1220 |
{
|
| 1221 |
gen_op_movl_seg_T0(seg_reg); |
| 1222 |
if (!s->addseg && seg_reg < R_FS)
|
| 1223 |
s->is_jmp = 2; /* abort translation because the register may |
| 1224 |
have a non zero base */
|
| 1225 |
} |
| 1226 |
|
| 1227 |
/* generate a push. It depends on ss32, addseg and dflag */
|
| 1228 |
static void gen_push_T0(DisasContext *s) |
| 1229 |
{
|
| 1230 |
if (s->ss32) {
|
| 1231 |
if (!s->addseg) {
|
| 1232 |
if (s->dflag)
|
| 1233 |
gen_op_pushl_T0(); |
| 1234 |
else
|
| 1235 |
gen_op_pushw_T0(); |
| 1236 |
} else {
|
| 1237 |
if (s->dflag)
|
| 1238 |
gen_op_pushl_ss32_T0(); |
| 1239 |
else
|
| 1240 |
gen_op_pushw_ss32_T0(); |
| 1241 |
} |
| 1242 |
} else {
|
| 1243 |
if (s->dflag)
|
| 1244 |
gen_op_pushl_ss16_T0(); |
| 1245 |
else
|
| 1246 |
gen_op_pushw_ss16_T0(); |
| 1247 |
} |
| 1248 |
} |
| 1249 |
|
| 1250 |
/* two step pop is necessary for precise exceptions */
|
| 1251 |
static void gen_pop_T0(DisasContext *s) |
| 1252 |
{
|
| 1253 |
if (s->ss32) {
|
| 1254 |
if (!s->addseg) {
|
| 1255 |
if (s->dflag)
|
| 1256 |
gen_op_popl_T0(); |
| 1257 |
else
|
| 1258 |
gen_op_popw_T0(); |
| 1259 |
} else {
|
| 1260 |
if (s->dflag)
|
| 1261 |
gen_op_popl_ss32_T0(); |
| 1262 |
else
|
| 1263 |
gen_op_popw_ss32_T0(); |
| 1264 |
} |
| 1265 |
} else {
|
| 1266 |
if (s->dflag)
|
| 1267 |
gen_op_popl_ss16_T0(); |
| 1268 |
else
|
| 1269 |
gen_op_popw_ss16_T0(); |
| 1270 |
} |
| 1271 |
} |
| 1272 |
|
| 1273 |
static void gen_pop_update(DisasContext *s) |
| 1274 |
{
|
| 1275 |
if (s->ss32) {
|
| 1276 |
if (s->dflag)
|
| 1277 |
gen_op_addl_ESP_4(); |
| 1278 |
else
|
| 1279 |
gen_op_addl_ESP_2(); |
| 1280 |
} else {
|
| 1281 |
if (s->dflag)
|
| 1282 |
gen_op_addw_ESP_4(); |
| 1283 |
else
|
| 1284 |
gen_op_addw_ESP_2(); |
| 1285 |
} |
| 1286 |
} |
| 1287 |
|
| 1288 |
/* NOTE: wrap around in 16 bit not fully handled */
|
| 1289 |
static void gen_pusha(DisasContext *s) |
| 1290 |
{
|
| 1291 |
int i;
|
| 1292 |
gen_op_movl_A0_ESP(); |
| 1293 |
gen_op_addl_A0_im(-16 << s->dflag);
|
| 1294 |
if (!s->ss32)
|
| 1295 |
gen_op_andl_A0_ffff(); |
| 1296 |
gen_op_movl_T1_A0(); |
| 1297 |
if (s->addseg)
|
| 1298 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[R_SS].base)); |
| 1299 |
for(i = 0;i < 8; i++) { |
| 1300 |
gen_op_mov_TN_reg[OT_LONG][0][7 - i](); |
| 1301 |
gen_op_st_T0_A0[OT_WORD + s->dflag](); |
| 1302 |
gen_op_addl_A0_im(2 << s->dflag);
|
| 1303 |
} |
| 1304 |
gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP](); |
| 1305 |
} |
| 1306 |
|
| 1307 |
/* NOTE: wrap around in 16 bit not fully handled */
|
| 1308 |
static void gen_popa(DisasContext *s) |
| 1309 |
{
|
| 1310 |
int i;
|
| 1311 |
gen_op_movl_A0_ESP(); |
| 1312 |
if (!s->ss32)
|
| 1313 |
gen_op_andl_A0_ffff(); |
| 1314 |
gen_op_movl_T1_A0(); |
| 1315 |
gen_op_addl_T1_im(16 << s->dflag);
|
| 1316 |
if (s->addseg)
|
| 1317 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[R_SS].base)); |
| 1318 |
for(i = 0;i < 8; i++) { |
| 1319 |
/* ESP is not reloaded */
|
| 1320 |
if (i != 3) { |
| 1321 |
gen_op_ld_T0_A0[OT_WORD + s->dflag](); |
| 1322 |
gen_op_mov_reg_T0[OT_WORD + s->dflag][7 - i]();
|
| 1323 |
} |
| 1324 |
gen_op_addl_A0_im(2 << s->dflag);
|
| 1325 |
} |
| 1326 |
gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP](); |
| 1327 |
} |
| 1328 |
|
| 1329 |
/* NOTE: wrap around in 16 bit not fully handled */
|
| 1330 |
/* XXX: check this */
|
| 1331 |
static void gen_enter(DisasContext *s, int esp_addend, int level) |
| 1332 |
{
|
| 1333 |
int ot, level1, addend, opsize;
|
| 1334 |
|
| 1335 |
ot = s->dflag + OT_WORD; |
| 1336 |
level &= 0x1f;
|
| 1337 |
level1 = level; |
| 1338 |
opsize = 2 << s->dflag;
|
| 1339 |
|
| 1340 |
gen_op_movl_A0_ESP(); |
| 1341 |
gen_op_addl_A0_im(-opsize); |
| 1342 |
if (!s->ss32)
|
| 1343 |
gen_op_andl_A0_ffff(); |
| 1344 |
gen_op_movl_T1_A0(); |
| 1345 |
if (s->addseg)
|
| 1346 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[R_SS].base)); |
| 1347 |
/* push bp */
|
| 1348 |
gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
|
| 1349 |
gen_op_st_T0_A0[ot](); |
| 1350 |
if (level) {
|
| 1351 |
while (level--) {
|
| 1352 |
gen_op_addl_A0_im(-opsize); |
| 1353 |
gen_op_addl_T0_im(-opsize); |
| 1354 |
gen_op_st_T0_A0[ot](); |
| 1355 |
} |
| 1356 |
gen_op_addl_A0_im(-opsize); |
| 1357 |
/* XXX: add st_T1_A0 ? */
|
| 1358 |
gen_op_movl_T0_T1(); |
| 1359 |
gen_op_st_T0_A0[ot](); |
| 1360 |
} |
| 1361 |
gen_op_mov_reg_T1[ot][R_EBP](); |
| 1362 |
addend = -esp_addend; |
| 1363 |
if (level1)
|
| 1364 |
addend -= opsize * (level1 + 1);
|
| 1365 |
gen_op_addl_T1_im(addend); |
| 1366 |
gen_op_mov_reg_T1[ot][R_ESP](); |
| 1367 |
} |
| 1368 |
|
| 1369 |
/* return the next pc address. Return -1 if no insn found. *is_jmp_ptr
|
| 1370 |
is set to true if the instruction sets the PC (last instruction of
|
| 1371 |
a basic block) */
|
| 1372 |
long disas_insn(DisasContext *s, uint8_t *pc_start)
|
| 1373 |
{
|
| 1374 |
int b, prefixes, aflag, dflag;
|
| 1375 |
int shift, ot;
|
| 1376 |
int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;
|
| 1377 |
unsigned int next_eip; |
| 1378 |
|
| 1379 |
s->pc = pc_start; |
| 1380 |
prefixes = 0;
|
| 1381 |
aflag = s->code32; |
| 1382 |
dflag = s->code32; |
| 1383 |
s->override = -1;
|
| 1384 |
next_byte:
|
| 1385 |
b = ldub(s->pc); |
| 1386 |
s->pc++; |
| 1387 |
/* check prefixes */
|
| 1388 |
switch (b) {
|
| 1389 |
case 0xf3: |
| 1390 |
prefixes |= PREFIX_REPZ; |
| 1391 |
goto next_byte;
|
| 1392 |
case 0xf2: |
| 1393 |
prefixes |= PREFIX_REPNZ; |
| 1394 |
goto next_byte;
|
| 1395 |
case 0xf0: |
| 1396 |
prefixes |= PREFIX_LOCK; |
| 1397 |
goto next_byte;
|
| 1398 |
case 0x2e: |
| 1399 |
s->override = R_CS; |
| 1400 |
goto next_byte;
|
| 1401 |
case 0x36: |
| 1402 |
s->override = R_SS; |
| 1403 |
goto next_byte;
|
| 1404 |
case 0x3e: |
| 1405 |
s->override = R_DS; |
| 1406 |
goto next_byte;
|
| 1407 |
case 0x26: |
| 1408 |
s->override = R_ES; |
| 1409 |
goto next_byte;
|
| 1410 |
case 0x64: |
| 1411 |
s->override = R_FS; |
| 1412 |
goto next_byte;
|
| 1413 |
case 0x65: |
| 1414 |
s->override = R_GS; |
| 1415 |
goto next_byte;
|
| 1416 |
case 0x66: |
| 1417 |
prefixes |= PREFIX_DATA; |
| 1418 |
goto next_byte;
|
| 1419 |
case 0x67: |
| 1420 |
prefixes |= PREFIX_ADR; |
| 1421 |
goto next_byte;
|
| 1422 |
case 0x9b: |
| 1423 |
prefixes |= PREFIX_FWAIT; |
| 1424 |
goto next_byte;
|
| 1425 |
} |
| 1426 |
|
| 1427 |
if (prefixes & PREFIX_DATA)
|
| 1428 |
dflag ^= 1;
|
| 1429 |
if (prefixes & PREFIX_ADR)
|
| 1430 |
aflag ^= 1;
|
| 1431 |
|
| 1432 |
s->prefix = prefixes; |
| 1433 |
s->aflag = aflag; |
| 1434 |
s->dflag = dflag; |
| 1435 |
|
| 1436 |
/* lock generation */
|
| 1437 |
if (prefixes & PREFIX_LOCK)
|
| 1438 |
gen_op_lock(); |
| 1439 |
|
| 1440 |
/* now check op code */
|
| 1441 |
reswitch:
|
| 1442 |
switch(b) {
|
| 1443 |
case 0x0f: |
| 1444 |
/**************************/
|
| 1445 |
/* extended op code */
|
| 1446 |
b = ldub(s->pc++) | 0x100;
|
| 1447 |
goto reswitch;
|
| 1448 |
|
| 1449 |
/**************************/
|
| 1450 |
/* arith & logic */
|
| 1451 |
case 0x00 ... 0x05: |
| 1452 |
case 0x08 ... 0x0d: |
| 1453 |
case 0x10 ... 0x15: |
| 1454 |
case 0x18 ... 0x1d: |
| 1455 |
case 0x20 ... 0x25: |
| 1456 |
case 0x28 ... 0x2d: |
| 1457 |
case 0x30 ... 0x35: |
| 1458 |
case 0x38 ... 0x3d: |
| 1459 |
{
|
| 1460 |
int op, f, val;
|
| 1461 |
op = (b >> 3) & 7; |
| 1462 |
f = (b >> 1) & 3; |
| 1463 |
|
| 1464 |
if ((b & 1) == 0) |
| 1465 |
ot = OT_BYTE; |
| 1466 |
else
|
| 1467 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1468 |
|
| 1469 |
switch(f) {
|
| 1470 |
case 0: /* OP Ev, Gv */ |
| 1471 |
modrm = ldub(s->pc++); |
| 1472 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1473 |
mod = (modrm >> 6) & 3; |
| 1474 |
rm = modrm & 7;
|
| 1475 |
if (mod != 3) { |
| 1476 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1477 |
gen_op_ld_T0_A0[ot](); |
| 1478 |
opreg = OR_TMP0; |
| 1479 |
} else {
|
| 1480 |
opreg = OR_EAX + rm; |
| 1481 |
} |
| 1482 |
gen_op(s, op, ot, opreg, reg); |
| 1483 |
if (mod != 3 && op != 7) { |
| 1484 |
gen_op_st_T0_A0[ot](); |
| 1485 |
} |
| 1486 |
break;
|
| 1487 |
case 1: /* OP Gv, Ev */ |
| 1488 |
modrm = ldub(s->pc++); |
| 1489 |
mod = (modrm >> 6) & 3; |
| 1490 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1491 |
rm = modrm & 7;
|
| 1492 |
if (mod != 3) { |
| 1493 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1494 |
gen_op_ld_T1_A0[ot](); |
| 1495 |
opreg = OR_TMP1; |
| 1496 |
} else {
|
| 1497 |
opreg = OR_EAX + rm; |
| 1498 |
} |
| 1499 |
gen_op(s, op, ot, reg, opreg); |
| 1500 |
break;
|
| 1501 |
case 2: /* OP A, Iv */ |
| 1502 |
val = insn_get(s, ot); |
| 1503 |
gen_opi(s, op, ot, OR_EAX, val); |
| 1504 |
break;
|
| 1505 |
} |
| 1506 |
} |
| 1507 |
break;
|
| 1508 |
|
| 1509 |
case 0x80: /* GRP1 */ |
| 1510 |
case 0x81: |
| 1511 |
case 0x83: |
| 1512 |
{
|
| 1513 |
int val;
|
| 1514 |
|
| 1515 |
if ((b & 1) == 0) |
| 1516 |
ot = OT_BYTE; |
| 1517 |
else
|
| 1518 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1519 |
|
| 1520 |
modrm = ldub(s->pc++); |
| 1521 |
mod = (modrm >> 6) & 3; |
| 1522 |
rm = modrm & 7;
|
| 1523 |
op = (modrm >> 3) & 7; |
| 1524 |
|
| 1525 |
if (mod != 3) { |
| 1526 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1527 |
gen_op_ld_T0_A0[ot](); |
| 1528 |
opreg = OR_TMP0; |
| 1529 |
} else {
|
| 1530 |
opreg = rm + OR_EAX; |
| 1531 |
} |
| 1532 |
|
| 1533 |
switch(b) {
|
| 1534 |
default:
|
| 1535 |
case 0x80: |
| 1536 |
case 0x81: |
| 1537 |
val = insn_get(s, ot); |
| 1538 |
break;
|
| 1539 |
case 0x83: |
| 1540 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 1541 |
break;
|
| 1542 |
} |
| 1543 |
|
| 1544 |
gen_opi(s, op, ot, opreg, val); |
| 1545 |
if (op != 7 && mod != 3) { |
| 1546 |
gen_op_st_T0_A0[ot](); |
| 1547 |
} |
| 1548 |
} |
| 1549 |
break;
|
| 1550 |
|
| 1551 |
/**************************/
|
| 1552 |
/* inc, dec, and other misc arith */
|
| 1553 |
case 0x40 ... 0x47: /* inc Gv */ |
| 1554 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1555 |
gen_inc(s, ot, OR_EAX + (b & 7), 1); |
| 1556 |
break;
|
| 1557 |
case 0x48 ... 0x4f: /* dec Gv */ |
| 1558 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1559 |
gen_inc(s, ot, OR_EAX + (b & 7), -1); |
| 1560 |
break;
|
| 1561 |
case 0xf6: /* GRP3 */ |
| 1562 |
case 0xf7: |
| 1563 |
if ((b & 1) == 0) |
| 1564 |
ot = OT_BYTE; |
| 1565 |
else
|
| 1566 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1567 |
|
| 1568 |
modrm = ldub(s->pc++); |
| 1569 |
mod = (modrm >> 6) & 3; |
| 1570 |
rm = modrm & 7;
|
| 1571 |
op = (modrm >> 3) & 7; |
| 1572 |
if (mod != 3) { |
| 1573 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1574 |
gen_op_ld_T0_A0[ot](); |
| 1575 |
} else {
|
| 1576 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1577 |
} |
| 1578 |
|
| 1579 |
switch(op) {
|
| 1580 |
case 0: /* test */ |
| 1581 |
val = insn_get(s, ot); |
| 1582 |
gen_op_movl_T1_im(val); |
| 1583 |
gen_op_testl_T0_T1_cc(); |
| 1584 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1585 |
break;
|
| 1586 |
case 2: /* not */ |
| 1587 |
gen_op_notl_T0(); |
| 1588 |
if (mod != 3) { |
| 1589 |
gen_op_st_T0_A0[ot](); |
| 1590 |
} else {
|
| 1591 |
gen_op_mov_reg_T0[ot][rm](); |
| 1592 |
} |
| 1593 |
break;
|
| 1594 |
case 3: /* neg */ |
| 1595 |
gen_op_negl_T0_cc(); |
| 1596 |
if (mod != 3) { |
| 1597 |
gen_op_st_T0_A0[ot](); |
| 1598 |
} else {
|
| 1599 |
gen_op_mov_reg_T0[ot][rm](); |
| 1600 |
} |
| 1601 |
s->cc_op = CC_OP_SUBB + ot; |
| 1602 |
break;
|
| 1603 |
case 4: /* mul */ |
| 1604 |
switch(ot) {
|
| 1605 |
case OT_BYTE:
|
| 1606 |
gen_op_mulb_AL_T0(); |
| 1607 |
break;
|
| 1608 |
case OT_WORD:
|
| 1609 |
gen_op_mulw_AX_T0(); |
| 1610 |
break;
|
| 1611 |
default:
|
| 1612 |
case OT_LONG:
|
| 1613 |
gen_op_mull_EAX_T0(); |
| 1614 |
break;
|
| 1615 |
} |
| 1616 |
s->cc_op = CC_OP_MUL; |
| 1617 |
break;
|
| 1618 |
case 5: /* imul */ |
| 1619 |
switch(ot) {
|
| 1620 |
case OT_BYTE:
|
| 1621 |
gen_op_imulb_AL_T0(); |
| 1622 |
break;
|
| 1623 |
case OT_WORD:
|
| 1624 |
gen_op_imulw_AX_T0(); |
| 1625 |
break;
|
| 1626 |
default:
|
| 1627 |
case OT_LONG:
|
| 1628 |
gen_op_imull_EAX_T0(); |
| 1629 |
break;
|
| 1630 |
} |
| 1631 |
s->cc_op = CC_OP_MUL; |
| 1632 |
break;
|
| 1633 |
case 6: /* div */ |
| 1634 |
switch(ot) {
|
| 1635 |
case OT_BYTE:
|
| 1636 |
gen_op_divb_AL_T0(); |
| 1637 |
break;
|
| 1638 |
case OT_WORD:
|
| 1639 |
gen_op_divw_AX_T0(); |
| 1640 |
break;
|
| 1641 |
default:
|
| 1642 |
case OT_LONG:
|
| 1643 |
gen_op_divl_EAX_T0(); |
| 1644 |
break;
|
| 1645 |
} |
| 1646 |
break;
|
| 1647 |
case 7: /* idiv */ |
| 1648 |
switch(ot) {
|
| 1649 |
case OT_BYTE:
|
| 1650 |
gen_op_idivb_AL_T0(); |
| 1651 |
break;
|
| 1652 |
case OT_WORD:
|
| 1653 |
gen_op_idivw_AX_T0(); |
| 1654 |
break;
|
| 1655 |
default:
|
| 1656 |
case OT_LONG:
|
| 1657 |
gen_op_idivl_EAX_T0(); |
| 1658 |
break;
|
| 1659 |
} |
| 1660 |
break;
|
| 1661 |
default:
|
| 1662 |
goto illegal_op;
|
| 1663 |
} |
| 1664 |
break;
|
| 1665 |
|
| 1666 |
case 0xfe: /* GRP4 */ |
| 1667 |
case 0xff: /* GRP5 */ |
| 1668 |
if ((b & 1) == 0) |
| 1669 |
ot = OT_BYTE; |
| 1670 |
else
|
| 1671 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1672 |
|
| 1673 |
modrm = ldub(s->pc++); |
| 1674 |
mod = (modrm >> 6) & 3; |
| 1675 |
rm = modrm & 7;
|
| 1676 |
op = (modrm >> 3) & 7; |
| 1677 |
if (op >= 2 && b == 0xfe) { |
| 1678 |
goto illegal_op;
|
| 1679 |
} |
| 1680 |
if (mod != 3) { |
| 1681 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1682 |
if (op != 3 && op != 5) |
| 1683 |
gen_op_ld_T0_A0[ot](); |
| 1684 |
} else {
|
| 1685 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1686 |
} |
| 1687 |
|
| 1688 |
switch(op) {
|
| 1689 |
case 0: /* inc Ev */ |
| 1690 |
gen_inc(s, ot, OR_TMP0, 1);
|
| 1691 |
if (mod != 3) |
| 1692 |
gen_op_st_T0_A0[ot](); |
| 1693 |
else
|
| 1694 |
gen_op_mov_reg_T0[ot][rm](); |
| 1695 |
break;
|
| 1696 |
case 1: /* dec Ev */ |
| 1697 |
gen_inc(s, ot, OR_TMP0, -1);
|
| 1698 |
if (mod != 3) |
| 1699 |
gen_op_st_T0_A0[ot](); |
| 1700 |
else
|
| 1701 |
gen_op_mov_reg_T0[ot][rm](); |
| 1702 |
break;
|
| 1703 |
case 2: /* call Ev */ |
| 1704 |
/* XXX: optimize if memory (no and is necessary) */
|
| 1705 |
if (s->dflag == 0) |
| 1706 |
gen_op_andl_T0_ffff(); |
| 1707 |
gen_op_jmp_T0(); |
| 1708 |
next_eip = s->pc - s->cs_base; |
| 1709 |
gen_op_movl_T0_im(next_eip); |
| 1710 |
gen_push_T0(s); |
| 1711 |
s->is_jmp = 1;
|
| 1712 |
break;
|
| 1713 |
case 3: /* lcall Ev */ |
| 1714 |
/* push return segment + offset */
|
| 1715 |
gen_op_movl_T0_seg(R_CS); |
| 1716 |
gen_push_T0(s); |
| 1717 |
next_eip = s->pc - s->cs_base; |
| 1718 |
gen_op_movl_T0_im(next_eip); |
| 1719 |
gen_push_T0(s); |
| 1720 |
|
| 1721 |
gen_op_ld_T1_A0[ot](); |
| 1722 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
| 1723 |
gen_op_lduw_T0_A0(); |
| 1724 |
gen_movl_seg_T0(s, R_CS); |
| 1725 |
gen_op_movl_T0_T1(); |
| 1726 |
gen_op_jmp_T0(); |
| 1727 |
s->is_jmp = 1;
|
| 1728 |
break;
|
| 1729 |
case 4: /* jmp Ev */ |
| 1730 |
if (s->dflag == 0) |
| 1731 |
gen_op_andl_T0_ffff(); |
| 1732 |
gen_op_jmp_T0(); |
| 1733 |
s->is_jmp = 1;
|
| 1734 |
break;
|
| 1735 |
case 5: /* ljmp Ev */ |
| 1736 |
gen_op_ld_T1_A0[ot](); |
| 1737 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
| 1738 |
gen_op_lduw_T0_A0(); |
| 1739 |
gen_movl_seg_T0(s, R_CS); |
| 1740 |
gen_op_movl_T0_T1(); |
| 1741 |
gen_op_jmp_T0(); |
| 1742 |
s->is_jmp = 1;
|
| 1743 |
break;
|
| 1744 |
case 6: /* push Ev */ |
| 1745 |
gen_push_T0(s); |
| 1746 |
break;
|
| 1747 |
default:
|
| 1748 |
goto illegal_op;
|
| 1749 |
} |
| 1750 |
break;
|
| 1751 |
|
| 1752 |
case 0x84: /* test Ev, Gv */ |
| 1753 |
case 0x85: |
| 1754 |
if ((b & 1) == 0) |
| 1755 |
ot = OT_BYTE; |
| 1756 |
else
|
| 1757 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1758 |
|
| 1759 |
modrm = ldub(s->pc++); |
| 1760 |
mod = (modrm >> 6) & 3; |
| 1761 |
rm = modrm & 7;
|
| 1762 |
reg = (modrm >> 3) & 7; |
| 1763 |
|
| 1764 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1765 |
gen_op_mov_TN_reg[ot][1][reg + OR_EAX]();
|
| 1766 |
gen_op_testl_T0_T1_cc(); |
| 1767 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1768 |
break;
|
| 1769 |
|
| 1770 |
case 0xa8: /* test eAX, Iv */ |
| 1771 |
case 0xa9: |
| 1772 |
if ((b & 1) == 0) |
| 1773 |
ot = OT_BYTE; |
| 1774 |
else
|
| 1775 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1776 |
val = insn_get(s, ot); |
| 1777 |
|
| 1778 |
gen_op_mov_TN_reg[ot][0][OR_EAX]();
|
| 1779 |
gen_op_movl_T1_im(val); |
| 1780 |
gen_op_testl_T0_T1_cc(); |
| 1781 |
s->cc_op = CC_OP_LOGICB + ot; |
| 1782 |
break;
|
| 1783 |
|
| 1784 |
case 0x98: /* CWDE/CBW */ |
| 1785 |
if (dflag)
|
| 1786 |
gen_op_movswl_EAX_AX(); |
| 1787 |
else
|
| 1788 |
gen_op_movsbw_AX_AL(); |
| 1789 |
break;
|
| 1790 |
case 0x99: /* CDQ/CWD */ |
| 1791 |
if (dflag)
|
| 1792 |
gen_op_movslq_EDX_EAX(); |
| 1793 |
else
|
| 1794 |
gen_op_movswl_DX_AX(); |
| 1795 |
break;
|
| 1796 |
case 0x1af: /* imul Gv, Ev */ |
| 1797 |
case 0x69: /* imul Gv, Ev, I */ |
| 1798 |
case 0x6b: |
| 1799 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1800 |
modrm = ldub(s->pc++); |
| 1801 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 1802 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 1803 |
if (b == 0x69) { |
| 1804 |
val = insn_get(s, ot); |
| 1805 |
gen_op_movl_T1_im(val); |
| 1806 |
} else if (b == 0x6b) { |
| 1807 |
val = insn_get(s, OT_BYTE); |
| 1808 |
gen_op_movl_T1_im(val); |
| 1809 |
} else {
|
| 1810 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 1811 |
} |
| 1812 |
|
| 1813 |
if (ot == OT_LONG) {
|
| 1814 |
gen_op_imull_T0_T1(); |
| 1815 |
} else {
|
| 1816 |
gen_op_imulw_T0_T1(); |
| 1817 |
} |
| 1818 |
gen_op_mov_reg_T0[ot][reg](); |
| 1819 |
s->cc_op = CC_OP_MUL; |
| 1820 |
break;
|
| 1821 |
case 0x1c0: |
| 1822 |
case 0x1c1: /* xadd Ev, Gv */ |
| 1823 |
if ((b & 1) == 0) |
| 1824 |
ot = OT_BYTE; |
| 1825 |
else
|
| 1826 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1827 |
modrm = ldub(s->pc++); |
| 1828 |
reg = (modrm >> 3) & 7; |
| 1829 |
mod = (modrm >> 6) & 3; |
| 1830 |
if (mod == 3) { |
| 1831 |
rm = modrm & 7;
|
| 1832 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1833 |
gen_op_mov_TN_reg[ot][1][rm]();
|
| 1834 |
gen_op_addl_T0_T1_cc(); |
| 1835 |
gen_op_mov_reg_T0[ot][rm](); |
| 1836 |
gen_op_mov_reg_T1[ot][reg](); |
| 1837 |
} else {
|
| 1838 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1839 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 1840 |
gen_op_ld_T1_A0[ot](); |
| 1841 |
gen_op_addl_T0_T1_cc(); |
| 1842 |
gen_op_st_T0_A0[ot](); |
| 1843 |
gen_op_mov_reg_T1[ot][reg](); |
| 1844 |
} |
| 1845 |
s->cc_op = CC_OP_ADDB + ot; |
| 1846 |
break;
|
| 1847 |
case 0x1b0: |
| 1848 |
case 0x1b1: /* cmpxchg Ev, Gv */ |
| 1849 |
if ((b & 1) == 0) |
| 1850 |
ot = OT_BYTE; |
| 1851 |
else
|
| 1852 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1853 |
modrm = ldub(s->pc++); |
| 1854 |
reg = (modrm >> 3) & 7; |
| 1855 |
mod = (modrm >> 6) & 3; |
| 1856 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 1857 |
if (mod == 3) { |
| 1858 |
rm = modrm & 7;
|
| 1859 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 1860 |
gen_op_cmpxchg_T0_T1_EAX_cc[ot](); |
| 1861 |
gen_op_mov_reg_T0[ot][rm](); |
| 1862 |
} else {
|
| 1863 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1864 |
gen_op_ld_T0_A0[ot](); |
| 1865 |
gen_op_cmpxchg_T0_T1_EAX_cc[ot](); |
| 1866 |
gen_op_st_T0_A0[ot](); |
| 1867 |
} |
| 1868 |
s->cc_op = CC_OP_SUBB + ot; |
| 1869 |
break;
|
| 1870 |
case 0x1c7: /* cmpxchg8b */ |
| 1871 |
modrm = ldub(s->pc++); |
| 1872 |
mod = (modrm >> 6) & 3; |
| 1873 |
if (mod == 3) |
| 1874 |
goto illegal_op;
|
| 1875 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 1876 |
gen_op_set_cc_op(s->cc_op); |
| 1877 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1878 |
gen_op_cmpxchg8b(); |
| 1879 |
s->cc_op = CC_OP_EFLAGS; |
| 1880 |
break;
|
| 1881 |
|
| 1882 |
/**************************/
|
| 1883 |
/* push/pop */
|
| 1884 |
case 0x50 ... 0x57: /* push */ |
| 1885 |
gen_op_mov_TN_reg[OT_LONG][0][b & 7](); |
| 1886 |
gen_push_T0(s); |
| 1887 |
break;
|
| 1888 |
case 0x58 ... 0x5f: /* pop */ |
| 1889 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1890 |
gen_pop_T0(s); |
| 1891 |
gen_op_mov_reg_T0[ot][b & 7]();
|
| 1892 |
gen_pop_update(s); |
| 1893 |
break;
|
| 1894 |
case 0x60: /* pusha */ |
| 1895 |
gen_pusha(s); |
| 1896 |
break;
|
| 1897 |
case 0x61: /* popa */ |
| 1898 |
gen_popa(s); |
| 1899 |
break;
|
| 1900 |
case 0x68: /* push Iv */ |
| 1901 |
case 0x6a: |
| 1902 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1903 |
if (b == 0x68) |
| 1904 |
val = insn_get(s, ot); |
| 1905 |
else
|
| 1906 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 1907 |
gen_op_movl_T0_im(val); |
| 1908 |
gen_push_T0(s); |
| 1909 |
break;
|
| 1910 |
case 0x8f: /* pop Ev */ |
| 1911 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1912 |
modrm = ldub(s->pc++); |
| 1913 |
gen_pop_T0(s); |
| 1914 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
| 1915 |
gen_pop_update(s); |
| 1916 |
break;
|
| 1917 |
case 0xc8: /* enter */ |
| 1918 |
{
|
| 1919 |
int level;
|
| 1920 |
val = lduw(s->pc); |
| 1921 |
s->pc += 2;
|
| 1922 |
level = ldub(s->pc++); |
| 1923 |
gen_enter(s, val, level); |
| 1924 |
} |
| 1925 |
break;
|
| 1926 |
case 0xc9: /* leave */ |
| 1927 |
/* XXX: exception not precise (ESP is update before potential exception) */
|
| 1928 |
if (s->ss32) {
|
| 1929 |
gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
|
| 1930 |
gen_op_mov_reg_T0[OT_LONG][R_ESP](); |
| 1931 |
} else {
|
| 1932 |
gen_op_mov_TN_reg[OT_WORD][0][R_EBP]();
|
| 1933 |
gen_op_mov_reg_T0[OT_WORD][R_ESP](); |
| 1934 |
} |
| 1935 |
gen_pop_T0(s); |
| 1936 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1937 |
gen_op_mov_reg_T0[ot][R_EBP](); |
| 1938 |
gen_pop_update(s); |
| 1939 |
break;
|
| 1940 |
case 0x06: /* push es */ |
| 1941 |
case 0x0e: /* push cs */ |
| 1942 |
case 0x16: /* push ss */ |
| 1943 |
case 0x1e: /* push ds */ |
| 1944 |
gen_op_movl_T0_seg(b >> 3);
|
| 1945 |
gen_push_T0(s); |
| 1946 |
break;
|
| 1947 |
case 0x1a0: /* push fs */ |
| 1948 |
case 0x1a8: /* push gs */ |
| 1949 |
gen_op_movl_T0_seg((b >> 3) & 7); |
| 1950 |
gen_push_T0(s); |
| 1951 |
break;
|
| 1952 |
case 0x07: /* pop es */ |
| 1953 |
case 0x17: /* pop ss */ |
| 1954 |
case 0x1f: /* pop ds */ |
| 1955 |
gen_pop_T0(s); |
| 1956 |
gen_movl_seg_T0(s, b >> 3);
|
| 1957 |
gen_pop_update(s); |
| 1958 |
break;
|
| 1959 |
case 0x1a1: /* pop fs */ |
| 1960 |
case 0x1a9: /* pop gs */ |
| 1961 |
gen_pop_T0(s); |
| 1962 |
gen_movl_seg_T0(s, (b >> 3) & 7); |
| 1963 |
gen_pop_update(s); |
| 1964 |
break;
|
| 1965 |
|
| 1966 |
/**************************/
|
| 1967 |
/* mov */
|
| 1968 |
case 0x88: |
| 1969 |
case 0x89: /* mov Gv, Ev */ |
| 1970 |
if ((b & 1) == 0) |
| 1971 |
ot = OT_BYTE; |
| 1972 |
else
|
| 1973 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1974 |
modrm = ldub(s->pc++); |
| 1975 |
reg = (modrm >> 3) & 7; |
| 1976 |
|
| 1977 |
/* generate a generic store */
|
| 1978 |
gen_ldst_modrm(s, modrm, ot, OR_EAX + reg, 1);
|
| 1979 |
break;
|
| 1980 |
case 0xc6: |
| 1981 |
case 0xc7: /* mov Ev, Iv */ |
| 1982 |
if ((b & 1) == 0) |
| 1983 |
ot = OT_BYTE; |
| 1984 |
else
|
| 1985 |
ot = dflag ? OT_LONG : OT_WORD; |
| 1986 |
modrm = ldub(s->pc++); |
| 1987 |
mod = (modrm >> 6) & 3; |
| 1988 |
if (mod != 3) |
| 1989 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 1990 |
val = insn_get(s, ot); |
| 1991 |
gen_op_movl_T0_im(val); |
| 1992 |
if (mod != 3) |
| 1993 |
gen_op_st_T0_A0[ot](); |
| 1994 |
else
|
| 1995 |
gen_op_mov_reg_T0[ot][modrm & 7]();
|
| 1996 |
break;
|
| 1997 |
case 0x8a: |
| 1998 |
case 0x8b: /* mov Ev, Gv */ |
| 1999 |
if ((b & 1) == 0) |
| 2000 |
ot = OT_BYTE; |
| 2001 |
else
|
| 2002 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2003 |
modrm = ldub(s->pc++); |
| 2004 |
reg = (modrm >> 3) & 7; |
| 2005 |
|
| 2006 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 2007 |
gen_op_mov_reg_T0[ot][reg](); |
| 2008 |
break;
|
| 2009 |
case 0x8e: /* mov seg, Gv */ |
| 2010 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2011 |
modrm = ldub(s->pc++); |
| 2012 |
reg = (modrm >> 3) & 7; |
| 2013 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 2014 |
if (reg >= 6 || reg == R_CS) |
| 2015 |
goto illegal_op;
|
| 2016 |
gen_movl_seg_T0(s, reg); |
| 2017 |
break;
|
| 2018 |
case 0x8c: /* mov Gv, seg */ |
| 2019 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2020 |
modrm = ldub(s->pc++); |
| 2021 |
reg = (modrm >> 3) & 7; |
| 2022 |
if (reg >= 6) |
| 2023 |
goto illegal_op;
|
| 2024 |
gen_op_movl_T0_seg(reg); |
| 2025 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
|
| 2026 |
break;
|
| 2027 |
|
| 2028 |
case 0x1b6: /* movzbS Gv, Eb */ |
| 2029 |
case 0x1b7: /* movzwS Gv, Eb */ |
| 2030 |
case 0x1be: /* movsbS Gv, Eb */ |
| 2031 |
case 0x1bf: /* movswS Gv, Eb */ |
| 2032 |
{
|
| 2033 |
int d_ot;
|
| 2034 |
/* d_ot is the size of destination */
|
| 2035 |
d_ot = dflag + OT_WORD; |
| 2036 |
/* ot is the size of source */
|
| 2037 |
ot = (b & 1) + OT_BYTE;
|
| 2038 |
modrm = ldub(s->pc++); |
| 2039 |
reg = ((modrm >> 3) & 7) + OR_EAX; |
| 2040 |
mod = (modrm >> 6) & 3; |
| 2041 |
rm = modrm & 7;
|
| 2042 |
|
| 2043 |
if (mod == 3) { |
| 2044 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 2045 |
switch(ot | (b & 8)) { |
| 2046 |
case OT_BYTE:
|
| 2047 |
gen_op_movzbl_T0_T0(); |
| 2048 |
break;
|
| 2049 |
case OT_BYTE | 8: |
| 2050 |
gen_op_movsbl_T0_T0(); |
| 2051 |
break;
|
| 2052 |
case OT_WORD:
|
| 2053 |
gen_op_movzwl_T0_T0(); |
| 2054 |
break;
|
| 2055 |
default:
|
| 2056 |
case OT_WORD | 8: |
| 2057 |
gen_op_movswl_T0_T0(); |
| 2058 |
break;
|
| 2059 |
} |
| 2060 |
gen_op_mov_reg_T0[d_ot][reg](); |
| 2061 |
} else {
|
| 2062 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2063 |
if (b & 8) { |
| 2064 |
gen_op_lds_T0_A0[ot](); |
| 2065 |
} else {
|
| 2066 |
gen_op_ldu_T0_A0[ot](); |
| 2067 |
} |
| 2068 |
gen_op_mov_reg_T0[d_ot][reg](); |
| 2069 |
} |
| 2070 |
} |
| 2071 |
break;
|
| 2072 |
|
| 2073 |
case 0x8d: /* lea */ |
| 2074 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2075 |
modrm = ldub(s->pc++); |
| 2076 |
reg = (modrm >> 3) & 7; |
| 2077 |
/* we must ensure that no segment is added */
|
| 2078 |
s->override = -1;
|
| 2079 |
val = s->addseg; |
| 2080 |
s->addseg = 0;
|
| 2081 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2082 |
s->addseg = val; |
| 2083 |
gen_op_mov_reg_A0[ot - OT_WORD][reg](); |
| 2084 |
break;
|
| 2085 |
|
| 2086 |
case 0xa0: /* mov EAX, Ov */ |
| 2087 |
case 0xa1: |
| 2088 |
case 0xa2: /* mov Ov, EAX */ |
| 2089 |
case 0xa3: |
| 2090 |
if ((b & 1) == 0) |
| 2091 |
ot = OT_BYTE; |
| 2092 |
else
|
| 2093 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2094 |
if (s->aflag)
|
| 2095 |
offset_addr = insn_get(s, OT_LONG); |
| 2096 |
else
|
| 2097 |
offset_addr = insn_get(s, OT_WORD); |
| 2098 |
gen_op_movl_A0_im(offset_addr); |
| 2099 |
/* handle override */
|
| 2100 |
{
|
| 2101 |
int override, must_add_seg;
|
| 2102 |
must_add_seg = s->addseg; |
| 2103 |
if (s->override >= 0) { |
| 2104 |
override = s->override; |
| 2105 |
must_add_seg = 1;
|
| 2106 |
} else {
|
| 2107 |
override = R_DS; |
| 2108 |
} |
| 2109 |
if (must_add_seg) {
|
| 2110 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 2111 |
} |
| 2112 |
} |
| 2113 |
if ((b & 2) == 0) { |
| 2114 |
gen_op_ld_T0_A0[ot](); |
| 2115 |
gen_op_mov_reg_T0[ot][R_EAX](); |
| 2116 |
} else {
|
| 2117 |
gen_op_mov_TN_reg[ot][0][R_EAX]();
|
| 2118 |
gen_op_st_T0_A0[ot](); |
| 2119 |
} |
| 2120 |
break;
|
| 2121 |
case 0xd7: /* xlat */ |
| 2122 |
gen_op_movl_A0_reg[R_EBX](); |
| 2123 |
gen_op_addl_A0_AL(); |
| 2124 |
if (s->aflag == 0) |
| 2125 |
gen_op_andl_A0_ffff(); |
| 2126 |
/* handle override */
|
| 2127 |
{
|
| 2128 |
int override, must_add_seg;
|
| 2129 |
must_add_seg = s->addseg; |
| 2130 |
override = R_DS; |
| 2131 |
if (s->override >= 0) { |
| 2132 |
override = s->override; |
| 2133 |
must_add_seg = 1;
|
| 2134 |
} else {
|
| 2135 |
override = R_DS; |
| 2136 |
} |
| 2137 |
if (must_add_seg) {
|
| 2138 |
gen_op_addl_A0_seg(offsetof(CPUX86State,seg_cache[override].base)); |
| 2139 |
} |
| 2140 |
} |
| 2141 |
gen_op_ldub_T0_A0(); |
| 2142 |
gen_op_mov_reg_T0[OT_BYTE][R_EAX](); |
| 2143 |
break;
|
| 2144 |
case 0xb0 ... 0xb7: /* mov R, Ib */ |
| 2145 |
val = insn_get(s, OT_BYTE); |
| 2146 |
gen_op_movl_T0_im(val); |
| 2147 |
gen_op_mov_reg_T0[OT_BYTE][b & 7]();
|
| 2148 |
break;
|
| 2149 |
case 0xb8 ... 0xbf: /* mov R, Iv */ |
| 2150 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2151 |
val = insn_get(s, ot); |
| 2152 |
reg = OR_EAX + (b & 7);
|
| 2153 |
gen_op_movl_T0_im(val); |
| 2154 |
gen_op_mov_reg_T0[ot][reg](); |
| 2155 |
break;
|
| 2156 |
|
| 2157 |
case 0x91 ... 0x97: /* xchg R, EAX */ |
| 2158 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2159 |
reg = b & 7;
|
| 2160 |
rm = R_EAX; |
| 2161 |
goto do_xchg_reg;
|
| 2162 |
case 0x86: |
| 2163 |
case 0x87: /* xchg Ev, Gv */ |
| 2164 |
if ((b & 1) == 0) |
| 2165 |
ot = OT_BYTE; |
| 2166 |
else
|
| 2167 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2168 |
modrm = ldub(s->pc++); |
| 2169 |
reg = (modrm >> 3) & 7; |
| 2170 |
mod = (modrm >> 6) & 3; |
| 2171 |
if (mod == 3) { |
| 2172 |
rm = modrm & 7;
|
| 2173 |
do_xchg_reg:
|
| 2174 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 2175 |
gen_op_mov_TN_reg[ot][1][rm]();
|
| 2176 |
gen_op_mov_reg_T0[ot][rm](); |
| 2177 |
gen_op_mov_reg_T1[ot][reg](); |
| 2178 |
} else {
|
| 2179 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2180 |
gen_op_mov_TN_reg[ot][0][reg]();
|
| 2181 |
/* for xchg, lock is implicit */
|
| 2182 |
if (!(prefixes & PREFIX_LOCK))
|
| 2183 |
gen_op_lock(); |
| 2184 |
gen_op_ld_T1_A0[ot](); |
| 2185 |
gen_op_st_T0_A0[ot](); |
| 2186 |
if (!(prefixes & PREFIX_LOCK))
|
| 2187 |
gen_op_unlock(); |
| 2188 |
gen_op_mov_reg_T1[ot][reg](); |
| 2189 |
} |
| 2190 |
break;
|
| 2191 |
case 0xc4: /* les Gv */ |
| 2192 |
op = R_ES; |
| 2193 |
goto do_lxx;
|
| 2194 |
case 0xc5: /* lds Gv */ |
| 2195 |
op = R_DS; |
| 2196 |
goto do_lxx;
|
| 2197 |
case 0x1b2: /* lss Gv */ |
| 2198 |
op = R_SS; |
| 2199 |
goto do_lxx;
|
| 2200 |
case 0x1b4: /* lfs Gv */ |
| 2201 |
op = R_FS; |
| 2202 |
goto do_lxx;
|
| 2203 |
case 0x1b5: /* lgs Gv */ |
| 2204 |
op = R_GS; |
| 2205 |
do_lxx:
|
| 2206 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2207 |
modrm = ldub(s->pc++); |
| 2208 |
reg = (modrm >> 3) & 7; |
| 2209 |
mod = (modrm >> 6) & 3; |
| 2210 |
if (mod == 3) |
| 2211 |
goto illegal_op;
|
| 2212 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2213 |
gen_op_ld_T1_A0[ot](); |
| 2214 |
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1)); |
| 2215 |
/* load the segment first to handle exceptions properly */
|
| 2216 |
gen_op_lduw_T0_A0(); |
| 2217 |
gen_movl_seg_T0(s, op); |
| 2218 |
/* then put the data */
|
| 2219 |
gen_op_mov_reg_T1[ot][reg](); |
| 2220 |
break;
|
| 2221 |
|
| 2222 |
/************************/
|
| 2223 |
/* shifts */
|
| 2224 |
case 0xc0: |
| 2225 |
case 0xc1: |
| 2226 |
/* shift Ev,Ib */
|
| 2227 |
shift = 2;
|
| 2228 |
grp2:
|
| 2229 |
{
|
| 2230 |
if ((b & 1) == 0) |
| 2231 |
ot = OT_BYTE; |
| 2232 |
else
|
| 2233 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2234 |
|
| 2235 |
modrm = ldub(s->pc++); |
| 2236 |
mod = (modrm >> 6) & 3; |
| 2237 |
rm = modrm & 7;
|
| 2238 |
op = (modrm >> 3) & 7; |
| 2239 |
|
| 2240 |
if (mod != 3) { |
| 2241 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2242 |
gen_op_ld_T0_A0[ot](); |
| 2243 |
opreg = OR_TMP0; |
| 2244 |
} else {
|
| 2245 |
opreg = rm + OR_EAX; |
| 2246 |
} |
| 2247 |
|
| 2248 |
/* simpler op */
|
| 2249 |
if (shift == 0) { |
| 2250 |
gen_shift(s, op, ot, opreg, OR_ECX); |
| 2251 |
} else {
|
| 2252 |
if (shift == 2) { |
| 2253 |
shift = ldub(s->pc++); |
| 2254 |
} |
| 2255 |
gen_shifti(s, op, ot, opreg, shift); |
| 2256 |
} |
| 2257 |
|
| 2258 |
if (mod != 3) { |
| 2259 |
gen_op_st_T0_A0[ot](); |
| 2260 |
} |
| 2261 |
} |
| 2262 |
break;
|
| 2263 |
case 0xd0: |
| 2264 |
case 0xd1: |
| 2265 |
/* shift Ev,1 */
|
| 2266 |
shift = 1;
|
| 2267 |
goto grp2;
|
| 2268 |
case 0xd2: |
| 2269 |
case 0xd3: |
| 2270 |
/* shift Ev,cl */
|
| 2271 |
shift = 0;
|
| 2272 |
goto grp2;
|
| 2273 |
|
| 2274 |
case 0x1a4: /* shld imm */ |
| 2275 |
op = 0;
|
| 2276 |
shift = 1;
|
| 2277 |
goto do_shiftd;
|
| 2278 |
case 0x1a5: /* shld cl */ |
| 2279 |
op = 0;
|
| 2280 |
shift = 0;
|
| 2281 |
goto do_shiftd;
|
| 2282 |
case 0x1ac: /* shrd imm */ |
| 2283 |
op = 1;
|
| 2284 |
shift = 1;
|
| 2285 |
goto do_shiftd;
|
| 2286 |
case 0x1ad: /* shrd cl */ |
| 2287 |
op = 1;
|
| 2288 |
shift = 0;
|
| 2289 |
do_shiftd:
|
| 2290 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2291 |
modrm = ldub(s->pc++); |
| 2292 |
mod = (modrm >> 6) & 3; |
| 2293 |
rm = modrm & 7;
|
| 2294 |
reg = (modrm >> 3) & 7; |
| 2295 |
|
| 2296 |
if (mod != 3) { |
| 2297 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2298 |
gen_op_ld_T0_A0[ot](); |
| 2299 |
} else {
|
| 2300 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 2301 |
} |
| 2302 |
gen_op_mov_TN_reg[ot][1][reg]();
|
| 2303 |
|
| 2304 |
if (shift) {
|
| 2305 |
val = ldub(s->pc++); |
| 2306 |
val &= 0x1f;
|
| 2307 |
if (val) {
|
| 2308 |
gen_op_shiftd_T0_T1_im_cc[ot - OT_WORD][op](val); |
| 2309 |
if (op == 0 && ot != OT_WORD) |
| 2310 |
s->cc_op = CC_OP_SHLB + ot; |
| 2311 |
else
|
| 2312 |
s->cc_op = CC_OP_SARB + ot; |
| 2313 |
} |
| 2314 |
} else {
|
| 2315 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2316 |
gen_op_set_cc_op(s->cc_op); |
| 2317 |
gen_op_shiftd_T0_T1_ECX_cc[ot - OT_WORD][op](); |
| 2318 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2319 |
} |
| 2320 |
if (mod != 3) { |
| 2321 |
gen_op_st_T0_A0[ot](); |
| 2322 |
} else {
|
| 2323 |
gen_op_mov_reg_T0[ot][rm](); |
| 2324 |
} |
| 2325 |
break;
|
| 2326 |
|
| 2327 |
/************************/
|
| 2328 |
/* floats */
|
| 2329 |
case 0xd8 ... 0xdf: |
| 2330 |
modrm = ldub(s->pc++); |
| 2331 |
mod = (modrm >> 6) & 3; |
| 2332 |
rm = modrm & 7;
|
| 2333 |
op = ((b & 7) << 3) | ((modrm >> 3) & 7); |
| 2334 |
|
| 2335 |
if (mod != 3) { |
| 2336 |
/* memory op */
|
| 2337 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 2338 |
switch(op) {
|
| 2339 |
case 0x00 ... 0x07: /* fxxxs */ |
| 2340 |
case 0x10 ... 0x17: /* fixxxl */ |
| 2341 |
case 0x20 ... 0x27: /* fxxxl */ |
| 2342 |
case 0x30 ... 0x37: /* fixxx */ |
| 2343 |
{
|
| 2344 |
int op1;
|
| 2345 |
op1 = op & 7;
|
| 2346 |
|
| 2347 |
switch(op >> 4) { |
| 2348 |
case 0: |
| 2349 |
gen_op_flds_FT0_A0(); |
| 2350 |
break;
|
| 2351 |
case 1: |
| 2352 |
gen_op_fildl_FT0_A0(); |
| 2353 |
break;
|
| 2354 |
case 2: |
| 2355 |
gen_op_fldl_FT0_A0(); |
| 2356 |
break;
|
| 2357 |
case 3: |
| 2358 |
default:
|
| 2359 |
gen_op_fild_FT0_A0(); |
| 2360 |
break;
|
| 2361 |
} |
| 2362 |
|
| 2363 |
gen_op_fp_arith_ST0_FT0[op1](); |
| 2364 |
if (op1 == 3) { |
| 2365 |
/* fcomp needs pop */
|
| 2366 |
gen_op_fpop(); |
| 2367 |
} |
| 2368 |
} |
| 2369 |
break;
|
| 2370 |
case 0x08: /* flds */ |
| 2371 |
case 0x0a: /* fsts */ |
| 2372 |
case 0x0b: /* fstps */ |
| 2373 |
case 0x18: /* fildl */ |
| 2374 |
case 0x1a: /* fistl */ |
| 2375 |
case 0x1b: /* fistpl */ |
| 2376 |
case 0x28: /* fldl */ |
| 2377 |
case 0x2a: /* fstl */ |
| 2378 |
case 0x2b: /* fstpl */ |
| 2379 |
case 0x38: /* filds */ |
| 2380 |
case 0x3a: /* fists */ |
| 2381 |
case 0x3b: /* fistps */ |
| 2382 |
|
| 2383 |
switch(op & 7) { |
| 2384 |
case 0: |
| 2385 |
gen_op_fpush(); |
| 2386 |
switch(op >> 4) { |
| 2387 |
case 0: |
| 2388 |
gen_op_flds_ST0_A0(); |
| 2389 |
break;
|
| 2390 |
case 1: |
| 2391 |
gen_op_fildl_ST0_A0(); |
| 2392 |
break;
|
| 2393 |
case 2: |
| 2394 |
gen_op_fldl_ST0_A0(); |
| 2395 |
break;
|
| 2396 |
case 3: |
| 2397 |
default:
|
| 2398 |
gen_op_fild_ST0_A0(); |
| 2399 |
break;
|
| 2400 |
} |
| 2401 |
break;
|
| 2402 |
default:
|
| 2403 |
switch(op >> 4) { |
| 2404 |
case 0: |
| 2405 |
gen_op_fsts_ST0_A0(); |
| 2406 |
break;
|
| 2407 |
case 1: |
| 2408 |
gen_op_fistl_ST0_A0(); |
| 2409 |
break;
|
| 2410 |
case 2: |
| 2411 |
gen_op_fstl_ST0_A0(); |
| 2412 |
break;
|
| 2413 |
case 3: |
| 2414 |
default:
|
| 2415 |
gen_op_fist_ST0_A0(); |
| 2416 |
break;
|
| 2417 |
} |
| 2418 |
if ((op & 7) == 3) |
| 2419 |
gen_op_fpop(); |
| 2420 |
break;
|
| 2421 |
} |
| 2422 |
break;
|
| 2423 |
case 0x0d: /* fldcw mem */ |
| 2424 |
gen_op_fldcw_A0(); |
| 2425 |
break;
|
| 2426 |
case 0x0f: /* fnstcw mem */ |
| 2427 |
gen_op_fnstcw_A0(); |
| 2428 |
break;
|
| 2429 |
case 0x1d: /* fldt mem */ |
| 2430 |
gen_op_fpush(); |
| 2431 |
gen_op_fldt_ST0_A0(); |
| 2432 |
break;
|
| 2433 |
case 0x1f: /* fstpt mem */ |
| 2434 |
gen_op_fstt_ST0_A0(); |
| 2435 |
gen_op_fpop(); |
| 2436 |
break;
|
| 2437 |
case 0x2f: /* fnstsw mem */ |
| 2438 |
gen_op_fnstsw_A0(); |
| 2439 |
break;
|
| 2440 |
case 0x3c: /* fbld */ |
| 2441 |
gen_op_fpush(); |
| 2442 |
gen_op_fbld_ST0_A0(); |
| 2443 |
break;
|
| 2444 |
case 0x3e: /* fbstp */ |
| 2445 |
gen_op_fbst_ST0_A0(); |
| 2446 |
gen_op_fpop(); |
| 2447 |
break;
|
| 2448 |
case 0x3d: /* fildll */ |
| 2449 |
gen_op_fpush(); |
| 2450 |
gen_op_fildll_ST0_A0(); |
| 2451 |
break;
|
| 2452 |
case 0x3f: /* fistpll */ |
| 2453 |
gen_op_fistll_ST0_A0(); |
| 2454 |
gen_op_fpop(); |
| 2455 |
break;
|
| 2456 |
default:
|
| 2457 |
goto illegal_op;
|
| 2458 |
} |
| 2459 |
} else {
|
| 2460 |
/* register float ops */
|
| 2461 |
opreg = rm; |
| 2462 |
|
| 2463 |
switch(op) {
|
| 2464 |
case 0x08: /* fld sti */ |
| 2465 |
gen_op_fpush(); |
| 2466 |
gen_op_fmov_ST0_STN((opreg + 1) & 7); |
| 2467 |
break;
|
| 2468 |
case 0x09: /* fxchg sti */ |
| 2469 |
gen_op_fxchg_ST0_STN(opreg); |
| 2470 |
break;
|
| 2471 |
case 0x0a: /* grp d9/2 */ |
| 2472 |
switch(rm) {
|
| 2473 |
case 0: /* fnop */ |
| 2474 |
break;
|
| 2475 |
default:
|
| 2476 |
goto illegal_op;
|
| 2477 |
} |
| 2478 |
break;
|
| 2479 |
case 0x0c: /* grp d9/4 */ |
| 2480 |
switch(rm) {
|
| 2481 |
case 0: /* fchs */ |
| 2482 |
gen_op_fchs_ST0(); |
| 2483 |
break;
|
| 2484 |
case 1: /* fabs */ |
| 2485 |
gen_op_fabs_ST0(); |
| 2486 |
break;
|
| 2487 |
case 4: /* ftst */ |
| 2488 |
gen_op_fldz_FT0(); |
| 2489 |
gen_op_fcom_ST0_FT0(); |
| 2490 |
break;
|
| 2491 |
case 5: /* fxam */ |
| 2492 |
gen_op_fxam_ST0(); |
| 2493 |
break;
|
| 2494 |
default:
|
| 2495 |
goto illegal_op;
|
| 2496 |
} |
| 2497 |
break;
|
| 2498 |
case 0x0d: /* grp d9/5 */ |
| 2499 |
{
|
| 2500 |
switch(rm) {
|
| 2501 |
case 0: |
| 2502 |
gen_op_fpush(); |
| 2503 |
gen_op_fld1_ST0(); |
| 2504 |
break;
|
| 2505 |
case 1: |
| 2506 |
gen_op_fpush(); |
| 2507 |
gen_op_fldl2t_ST0(); |
| 2508 |
break;
|
| 2509 |
case 2: |
| 2510 |
gen_op_fpush(); |
| 2511 |
gen_op_fldl2e_ST0(); |
| 2512 |
break;
|
| 2513 |
case 3: |
| 2514 |
gen_op_fpush(); |
| 2515 |
gen_op_fldpi_ST0(); |
| 2516 |
break;
|
| 2517 |
case 4: |
| 2518 |
gen_op_fpush(); |
| 2519 |
gen_op_fldlg2_ST0(); |
| 2520 |
break;
|
| 2521 |
case 5: |
| 2522 |
gen_op_fpush(); |
| 2523 |
gen_op_fldln2_ST0(); |
| 2524 |
break;
|
| 2525 |
case 6: |
| 2526 |
gen_op_fpush(); |
| 2527 |
gen_op_fldz_ST0(); |
| 2528 |
break;
|
| 2529 |
default:
|
| 2530 |
goto illegal_op;
|
| 2531 |
} |
| 2532 |
} |
| 2533 |
break;
|
| 2534 |
case 0x0e: /* grp d9/6 */ |
| 2535 |
switch(rm) {
|
| 2536 |
case 0: /* f2xm1 */ |
| 2537 |
gen_op_f2xm1(); |
| 2538 |
break;
|
| 2539 |
case 1: /* fyl2x */ |
| 2540 |
gen_op_fyl2x(); |
| 2541 |
break;
|
| 2542 |
case 2: /* fptan */ |
| 2543 |
gen_op_fptan(); |
| 2544 |
break;
|
| 2545 |
case 3: /* fpatan */ |
| 2546 |
gen_op_fpatan(); |
| 2547 |
break;
|
| 2548 |
case 4: /* fxtract */ |
| 2549 |
gen_op_fxtract(); |
| 2550 |
break;
|
| 2551 |
case 5: /* fprem1 */ |
| 2552 |
gen_op_fprem1(); |
| 2553 |
break;
|
| 2554 |
case 6: /* fdecstp */ |
| 2555 |
gen_op_fdecstp(); |
| 2556 |
break;
|
| 2557 |
default:
|
| 2558 |
case 7: /* fincstp */ |
| 2559 |
gen_op_fincstp(); |
| 2560 |
break;
|
| 2561 |
} |
| 2562 |
break;
|
| 2563 |
case 0x0f: /* grp d9/7 */ |
| 2564 |
switch(rm) {
|
| 2565 |
case 0: /* fprem */ |
| 2566 |
gen_op_fprem(); |
| 2567 |
break;
|
| 2568 |
case 1: /* fyl2xp1 */ |
| 2569 |
gen_op_fyl2xp1(); |
| 2570 |
break;
|
| 2571 |
case 2: /* fsqrt */ |
| 2572 |
gen_op_fsqrt(); |
| 2573 |
break;
|
| 2574 |
case 3: /* fsincos */ |
| 2575 |
gen_op_fsincos(); |
| 2576 |
break;
|
| 2577 |
case 5: /* fscale */ |
| 2578 |
gen_op_fscale(); |
| 2579 |
break;
|
| 2580 |
case 4: /* frndint */ |
| 2581 |
gen_op_frndint(); |
| 2582 |
break;
|
| 2583 |
case 6: /* fsin */ |
| 2584 |
gen_op_fsin(); |
| 2585 |
break;
|
| 2586 |
default:
|
| 2587 |
case 7: /* fcos */ |
| 2588 |
gen_op_fcos(); |
| 2589 |
break;
|
| 2590 |
} |
| 2591 |
break;
|
| 2592 |
case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */ |
| 2593 |
case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */ |
| 2594 |
case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */ |
| 2595 |
{
|
| 2596 |
int op1;
|
| 2597 |
|
| 2598 |
op1 = op & 7;
|
| 2599 |
if (op >= 0x20) { |
| 2600 |
gen_op_fp_arith_STN_ST0[op1](opreg); |
| 2601 |
if (op >= 0x30) |
| 2602 |
gen_op_fpop(); |
| 2603 |
} else {
|
| 2604 |
gen_op_fmov_FT0_STN(opreg); |
| 2605 |
gen_op_fp_arith_ST0_FT0[op1](); |
| 2606 |
} |
| 2607 |
} |
| 2608 |
break;
|
| 2609 |
case 0x02: /* fcom */ |
| 2610 |
gen_op_fmov_FT0_STN(opreg); |
| 2611 |
gen_op_fcom_ST0_FT0(); |
| 2612 |
break;
|
| 2613 |
case 0x03: /* fcomp */ |
| 2614 |
gen_op_fmov_FT0_STN(opreg); |
| 2615 |
gen_op_fcom_ST0_FT0(); |
| 2616 |
gen_op_fpop(); |
| 2617 |
break;
|
| 2618 |
case 0x15: /* da/5 */ |
| 2619 |
switch(rm) {
|
| 2620 |
case 1: /* fucompp */ |
| 2621 |
gen_op_fmov_FT0_STN(1);
|
| 2622 |
gen_op_fucom_ST0_FT0(); |
| 2623 |
gen_op_fpop(); |
| 2624 |
gen_op_fpop(); |
| 2625 |
break;
|
| 2626 |
default:
|
| 2627 |
goto illegal_op;
|
| 2628 |
} |
| 2629 |
break;
|
| 2630 |
case 0x1c: |
| 2631 |
switch(rm) {
|
| 2632 |
case 2: /* fclex */ |
| 2633 |
gen_op_fclex(); |
| 2634 |
break;
|
| 2635 |
case 3: /* fninit */ |
| 2636 |
gen_op_fninit(); |
| 2637 |
break;
|
| 2638 |
default:
|
| 2639 |
goto illegal_op;
|
| 2640 |
} |
| 2641 |
break;
|
| 2642 |
case 0x2a: /* fst sti */ |
| 2643 |
gen_op_fmov_STN_ST0(opreg); |
| 2644 |
break;
|
| 2645 |
case 0x2b: /* fstp sti */ |
| 2646 |
gen_op_fmov_STN_ST0(opreg); |
| 2647 |
gen_op_fpop(); |
| 2648 |
break;
|
| 2649 |
case 0x2c: /* fucom st(i) */ |
| 2650 |
gen_op_fmov_FT0_STN(opreg); |
| 2651 |
gen_op_fucom_ST0_FT0(); |
| 2652 |
break;
|
| 2653 |
case 0x2d: /* fucomp st(i) */ |
| 2654 |
gen_op_fmov_FT0_STN(opreg); |
| 2655 |
gen_op_fucom_ST0_FT0(); |
| 2656 |
gen_op_fpop(); |
| 2657 |
break;
|
| 2658 |
case 0x33: /* de/3 */ |
| 2659 |
switch(rm) {
|
| 2660 |
case 1: /* fcompp */ |
| 2661 |
gen_op_fmov_FT0_STN(1);
|
| 2662 |
gen_op_fcom_ST0_FT0(); |
| 2663 |
gen_op_fpop(); |
| 2664 |
gen_op_fpop(); |
| 2665 |
break;
|
| 2666 |
default:
|
| 2667 |
goto illegal_op;
|
| 2668 |
} |
| 2669 |
break;
|
| 2670 |
case 0x3c: /* df/4 */ |
| 2671 |
switch(rm) {
|
| 2672 |
case 0: |
| 2673 |
gen_op_fnstsw_EAX(); |
| 2674 |
break;
|
| 2675 |
default:
|
| 2676 |
goto illegal_op;
|
| 2677 |
} |
| 2678 |
break;
|
| 2679 |
default:
|
| 2680 |
goto illegal_op;
|
| 2681 |
} |
| 2682 |
} |
| 2683 |
break;
|
| 2684 |
/************************/
|
| 2685 |
/* string ops */
|
| 2686 |
|
| 2687 |
case 0xa4: /* movsS */ |
| 2688 |
case 0xa5: |
| 2689 |
if ((b & 1) == 0) |
| 2690 |
ot = OT_BYTE; |
| 2691 |
else
|
| 2692 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2693 |
|
| 2694 |
if (prefixes & PREFIX_REPZ) {
|
| 2695 |
gen_string_ds(s, ot, gen_op_movs + 9);
|
| 2696 |
} else {
|
| 2697 |
gen_string_ds(s, ot, gen_op_movs); |
| 2698 |
} |
| 2699 |
break;
|
| 2700 |
|
| 2701 |
case 0xaa: /* stosS */ |
| 2702 |
case 0xab: |
| 2703 |
if ((b & 1) == 0) |
| 2704 |
ot = OT_BYTE; |
| 2705 |
else
|
| 2706 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2707 |
|
| 2708 |
if (prefixes & PREFIX_REPZ) {
|
| 2709 |
gen_string_es(s, ot, gen_op_stos + 9);
|
| 2710 |
} else {
|
| 2711 |
gen_string_es(s, ot, gen_op_stos); |
| 2712 |
} |
| 2713 |
break;
|
| 2714 |
case 0xac: /* lodsS */ |
| 2715 |
case 0xad: |
| 2716 |
if ((b & 1) == 0) |
| 2717 |
ot = OT_BYTE; |
| 2718 |
else
|
| 2719 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2720 |
if (prefixes & PREFIX_REPZ) {
|
| 2721 |
gen_string_ds(s, ot, gen_op_lods + 9);
|
| 2722 |
} else {
|
| 2723 |
gen_string_ds(s, ot, gen_op_lods); |
| 2724 |
} |
| 2725 |
break;
|
| 2726 |
case 0xae: /* scasS */ |
| 2727 |
case 0xaf: |
| 2728 |
if ((b & 1) == 0) |
| 2729 |
ot = OT_BYTE; |
| 2730 |
else
|
| 2731 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2732 |
if (prefixes & PREFIX_REPNZ) {
|
| 2733 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2734 |
gen_op_set_cc_op(s->cc_op); |
| 2735 |
gen_string_es(s, ot, gen_op_scas + 9 * 2); |
| 2736 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2737 |
} else if (prefixes & PREFIX_REPZ) { |
| 2738 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2739 |
gen_op_set_cc_op(s->cc_op); |
| 2740 |
gen_string_es(s, ot, gen_op_scas + 9);
|
| 2741 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2742 |
} else {
|
| 2743 |
gen_string_es(s, ot, gen_op_scas); |
| 2744 |
s->cc_op = CC_OP_SUBB + ot; |
| 2745 |
} |
| 2746 |
break;
|
| 2747 |
|
| 2748 |
case 0xa6: /* cmpsS */ |
| 2749 |
case 0xa7: |
| 2750 |
if ((b & 1) == 0) |
| 2751 |
ot = OT_BYTE; |
| 2752 |
else
|
| 2753 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2754 |
if (prefixes & PREFIX_REPNZ) {
|
| 2755 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2756 |
gen_op_set_cc_op(s->cc_op); |
| 2757 |
gen_string_ds(s, ot, gen_op_cmps + 9 * 2); |
| 2758 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2759 |
} else if (prefixes & PREFIX_REPZ) { |
| 2760 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 2761 |
gen_op_set_cc_op(s->cc_op); |
| 2762 |
gen_string_ds(s, ot, gen_op_cmps + 9);
|
| 2763 |
s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
|
| 2764 |
} else {
|
| 2765 |
gen_string_ds(s, ot, gen_op_cmps); |
| 2766 |
s->cc_op = CC_OP_SUBB + ot; |
| 2767 |
} |
| 2768 |
break;
|
| 2769 |
case 0x6c: /* insS */ |
| 2770 |
case 0x6d: |
| 2771 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2772 |
/* NOTE: even for (E)CX = 0 the exception is raised */
|
| 2773 |
gen_op_gpf(pc_start - s->cs_base); |
| 2774 |
} else {
|
| 2775 |
if ((b & 1) == 0) |
| 2776 |
ot = OT_BYTE; |
| 2777 |
else
|
| 2778 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2779 |
if (prefixes & PREFIX_REPZ) {
|
| 2780 |
gen_string_es(s, ot, gen_op_ins + 9);
|
| 2781 |
} else {
|
| 2782 |
gen_string_es(s, ot, gen_op_ins); |
| 2783 |
} |
| 2784 |
} |
| 2785 |
break;
|
| 2786 |
case 0x6e: /* outsS */ |
| 2787 |
case 0x6f: |
| 2788 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2789 |
/* NOTE: even for (E)CX = 0 the exception is raised */
|
| 2790 |
gen_op_gpf(pc_start - s->cs_base); |
| 2791 |
} else {
|
| 2792 |
if ((b & 1) == 0) |
| 2793 |
ot = OT_BYTE; |
| 2794 |
else
|
| 2795 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2796 |
if (prefixes & PREFIX_REPZ) {
|
| 2797 |
gen_string_ds(s, ot, gen_op_outs + 9);
|
| 2798 |
} else {
|
| 2799 |
gen_string_ds(s, ot, gen_op_outs); |
| 2800 |
} |
| 2801 |
} |
| 2802 |
break;
|
| 2803 |
|
| 2804 |
/************************/
|
| 2805 |
/* port I/O */
|
| 2806 |
case 0xe4: |
| 2807 |
case 0xe5: |
| 2808 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2809 |
gen_op_gpf(pc_start - s->cs_base); |
| 2810 |
} else {
|
| 2811 |
if ((b & 1) == 0) |
| 2812 |
ot = OT_BYTE; |
| 2813 |
else
|
| 2814 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2815 |
val = ldub(s->pc++); |
| 2816 |
gen_op_movl_T0_im(val); |
| 2817 |
gen_op_in[ot](); |
| 2818 |
gen_op_mov_reg_T1[ot][R_EAX](); |
| 2819 |
} |
| 2820 |
break;
|
| 2821 |
case 0xe6: |
| 2822 |
case 0xe7: |
| 2823 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2824 |
gen_op_gpf(pc_start - s->cs_base); |
| 2825 |
} else {
|
| 2826 |
if ((b & 1) == 0) |
| 2827 |
ot = OT_BYTE; |
| 2828 |
else
|
| 2829 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2830 |
val = ldub(s->pc++); |
| 2831 |
gen_op_movl_T0_im(val); |
| 2832 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
| 2833 |
gen_op_out[ot](); |
| 2834 |
} |
| 2835 |
break;
|
| 2836 |
case 0xec: |
| 2837 |
case 0xed: |
| 2838 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2839 |
gen_op_gpf(pc_start - s->cs_base); |
| 2840 |
} else {
|
| 2841 |
if ((b & 1) == 0) |
| 2842 |
ot = OT_BYTE; |
| 2843 |
else
|
| 2844 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2845 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
| 2846 |
gen_op_in[ot](); |
| 2847 |
gen_op_mov_reg_T1[ot][R_EAX](); |
| 2848 |
} |
| 2849 |
break;
|
| 2850 |
case 0xee: |
| 2851 |
case 0xef: |
| 2852 |
if (s->cpl > s->iopl || s->vm86) {
|
| 2853 |
gen_op_gpf(pc_start - s->cs_base); |
| 2854 |
} else {
|
| 2855 |
if ((b & 1) == 0) |
| 2856 |
ot = OT_BYTE; |
| 2857 |
else
|
| 2858 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2859 |
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
|
| 2860 |
gen_op_mov_TN_reg[ot][1][R_EAX]();
|
| 2861 |
gen_op_out[ot](); |
| 2862 |
} |
| 2863 |
break;
|
| 2864 |
|
| 2865 |
/************************/
|
| 2866 |
/* control */
|
| 2867 |
case 0xc2: /* ret im */ |
| 2868 |
val = ldsw(s->pc); |
| 2869 |
s->pc += 2;
|
| 2870 |
gen_pop_T0(s); |
| 2871 |
if (s->ss32)
|
| 2872 |
gen_op_addl_ESP_im(val + (2 << s->dflag));
|
| 2873 |
else
|
| 2874 |
gen_op_addw_ESP_im(val + (2 << s->dflag));
|
| 2875 |
if (s->dflag == 0) |
| 2876 |
gen_op_andl_T0_ffff(); |
| 2877 |
gen_op_jmp_T0(); |
| 2878 |
s->is_jmp = 1;
|
| 2879 |
break;
|
| 2880 |
case 0xc3: /* ret */ |
| 2881 |
gen_pop_T0(s); |
| 2882 |
gen_pop_update(s); |
| 2883 |
if (s->dflag == 0) |
| 2884 |
gen_op_andl_T0_ffff(); |
| 2885 |
gen_op_jmp_T0(); |
| 2886 |
s->is_jmp = 1;
|
| 2887 |
break;
|
| 2888 |
case 0xca: /* lret im */ |
| 2889 |
/* XXX: not restartable */
|
| 2890 |
val = ldsw(s->pc); |
| 2891 |
s->pc += 2;
|
| 2892 |
/* pop offset */
|
| 2893 |
gen_pop_T0(s); |
| 2894 |
if (s->dflag == 0) |
| 2895 |
gen_op_andl_T0_ffff(); |
| 2896 |
gen_op_jmp_T0(); |
| 2897 |
gen_pop_update(s); |
| 2898 |
/* pop selector */
|
| 2899 |
gen_pop_T0(s); |
| 2900 |
gen_movl_seg_T0(s, R_CS); |
| 2901 |
gen_pop_update(s); |
| 2902 |
/* add stack offset */
|
| 2903 |
if (s->ss32)
|
| 2904 |
gen_op_addl_ESP_im(val + (2 << s->dflag));
|
| 2905 |
else
|
| 2906 |
gen_op_addw_ESP_im(val + (2 << s->dflag));
|
| 2907 |
s->is_jmp = 1;
|
| 2908 |
break;
|
| 2909 |
case 0xcb: /* lret */ |
| 2910 |
/* XXX: not restartable */
|
| 2911 |
/* pop offset */
|
| 2912 |
gen_pop_T0(s); |
| 2913 |
if (s->dflag == 0) |
| 2914 |
gen_op_andl_T0_ffff(); |
| 2915 |
gen_op_jmp_T0(); |
| 2916 |
gen_pop_update(s); |
| 2917 |
/* pop selector */
|
| 2918 |
gen_pop_T0(s); |
| 2919 |
gen_movl_seg_T0(s, R_CS); |
| 2920 |
gen_pop_update(s); |
| 2921 |
s->is_jmp = 1;
|
| 2922 |
break;
|
| 2923 |
case 0xcf: /* iret */ |
| 2924 |
/* XXX: not restartable */
|
| 2925 |
/* pop offset */
|
| 2926 |
gen_pop_T0(s); |
| 2927 |
if (s->dflag == 0) |
| 2928 |
gen_op_andl_T0_ffff(); |
| 2929 |
gen_op_jmp_T0(); |
| 2930 |
gen_pop_update(s); |
| 2931 |
/* pop selector */
|
| 2932 |
gen_pop_T0(s); |
| 2933 |
gen_movl_seg_T0(s, R_CS); |
| 2934 |
gen_pop_update(s); |
| 2935 |
/* pop eflags */
|
| 2936 |
gen_pop_T0(s); |
| 2937 |
if (s->dflag) {
|
| 2938 |
if (s->vm86)
|
| 2939 |
gen_op_movl_eflags_T0_vm(pc_start - s->cs_base); |
| 2940 |
else
|
| 2941 |
gen_op_movl_eflags_T0(); |
| 2942 |
} else {
|
| 2943 |
if (s->vm86)
|
| 2944 |
gen_op_movw_eflags_T0_vm(pc_start - s->cs_base); |
| 2945 |
else
|
| 2946 |
gen_op_movw_eflags_T0(); |
| 2947 |
} |
| 2948 |
gen_pop_update(s); |
| 2949 |
s->cc_op = CC_OP_EFLAGS; |
| 2950 |
s->is_jmp = 1;
|
| 2951 |
break;
|
| 2952 |
case 0xe8: /* call im */ |
| 2953 |
{
|
| 2954 |
unsigned int next_eip; |
| 2955 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2956 |
val = insn_get(s, ot); |
| 2957 |
next_eip = s->pc - s->cs_base; |
| 2958 |
val += next_eip; |
| 2959 |
if (s->dflag == 0) |
| 2960 |
val &= 0xffff;
|
| 2961 |
gen_op_movl_T0_im(next_eip); |
| 2962 |
gen_push_T0(s); |
| 2963 |
gen_op_jmp_im(val); |
| 2964 |
s->is_jmp = 1;
|
| 2965 |
} |
| 2966 |
break;
|
| 2967 |
case 0x9a: /* lcall im */ |
| 2968 |
{
|
| 2969 |
unsigned int selector, offset; |
| 2970 |
|
| 2971 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2972 |
offset = insn_get(s, ot); |
| 2973 |
selector = insn_get(s, OT_WORD); |
| 2974 |
|
| 2975 |
/* push return segment + offset */
|
| 2976 |
gen_op_movl_T0_seg(R_CS); |
| 2977 |
gen_push_T0(s); |
| 2978 |
next_eip = s->pc - s->cs_base; |
| 2979 |
gen_op_movl_T0_im(next_eip); |
| 2980 |
gen_push_T0(s); |
| 2981 |
|
| 2982 |
/* change cs and pc */
|
| 2983 |
gen_op_movl_T0_im(selector); |
| 2984 |
gen_movl_seg_T0(s, R_CS); |
| 2985 |
gen_op_jmp_im((unsigned long)offset); |
| 2986 |
s->is_jmp = 1;
|
| 2987 |
} |
| 2988 |
break;
|
| 2989 |
case 0xe9: /* jmp */ |
| 2990 |
ot = dflag ? OT_LONG : OT_WORD; |
| 2991 |
val = insn_get(s, ot); |
| 2992 |
val += s->pc - s->cs_base; |
| 2993 |
if (s->dflag == 0) |
| 2994 |
val = val & 0xffff;
|
| 2995 |
gen_op_jmp_im(val); |
| 2996 |
s->is_jmp = 1;
|
| 2997 |
break;
|
| 2998 |
case 0xea: /* ljmp im */ |
| 2999 |
{
|
| 3000 |
unsigned int selector, offset; |
| 3001 |
|
| 3002 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3003 |
offset = insn_get(s, ot); |
| 3004 |
selector = insn_get(s, OT_WORD); |
| 3005 |
|
| 3006 |
/* change cs and pc */
|
| 3007 |
gen_op_movl_T0_im(selector); |
| 3008 |
gen_movl_seg_T0(s, R_CS); |
| 3009 |
gen_op_jmp_im((unsigned long)offset); |
| 3010 |
s->is_jmp = 1;
|
| 3011 |
} |
| 3012 |
break;
|
| 3013 |
case 0xeb: /* jmp Jb */ |
| 3014 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 3015 |
val += s->pc - s->cs_base; |
| 3016 |
if (s->dflag == 0) |
| 3017 |
val = val & 0xffff;
|
| 3018 |
gen_op_jmp_im(val); |
| 3019 |
s->is_jmp = 1;
|
| 3020 |
break;
|
| 3021 |
case 0x70 ... 0x7f: /* jcc Jb */ |
| 3022 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 3023 |
goto do_jcc;
|
| 3024 |
case 0x180 ... 0x18f: /* jcc Jv */ |
| 3025 |
if (dflag) {
|
| 3026 |
val = insn_get(s, OT_LONG); |
| 3027 |
} else {
|
| 3028 |
val = (int16_t)insn_get(s, OT_WORD); |
| 3029 |
} |
| 3030 |
do_jcc:
|
| 3031 |
next_eip = s->pc - s->cs_base; |
| 3032 |
val += next_eip; |
| 3033 |
if (s->dflag == 0) |
| 3034 |
val &= 0xffff;
|
| 3035 |
gen_jcc(s, b, val, next_eip); |
| 3036 |
s->is_jmp = 1;
|
| 3037 |
break;
|
| 3038 |
|
| 3039 |
case 0x190 ... 0x19f: /* setcc Gv */ |
| 3040 |
modrm = ldub(s->pc++); |
| 3041 |
gen_setcc(s, b); |
| 3042 |
gen_ldst_modrm(s, modrm, OT_BYTE, OR_TMP0, 1);
|
| 3043 |
break;
|
| 3044 |
case 0x140 ... 0x14f: /* cmov Gv, Ev */ |
| 3045 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3046 |
modrm = ldub(s->pc++); |
| 3047 |
reg = (modrm >> 3) & 7; |
| 3048 |
mod = (modrm >> 6) & 3; |
| 3049 |
gen_setcc(s, b); |
| 3050 |
if (mod != 3) { |
| 3051 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 3052 |
gen_op_ld_T1_A0[ot](); |
| 3053 |
} else {
|
| 3054 |
rm = modrm & 7;
|
| 3055 |
gen_op_mov_TN_reg[ot][1][rm]();
|
| 3056 |
} |
| 3057 |
gen_op_cmov_reg_T1_T0[ot - OT_WORD][reg](); |
| 3058 |
break;
|
| 3059 |
|
| 3060 |
/************************/
|
| 3061 |
/* flags */
|
| 3062 |
case 0x9c: /* pushf */ |
| 3063 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3064 |
gen_op_set_cc_op(s->cc_op); |
| 3065 |
if (s->vm86)
|
| 3066 |
gen_op_movl_T0_eflags_vm(); |
| 3067 |
else
|
| 3068 |
gen_op_movl_T0_eflags(); |
| 3069 |
gen_push_T0(s); |
| 3070 |
break;
|
| 3071 |
case 0x9d: /* popf */ |
| 3072 |
gen_pop_T0(s); |
| 3073 |
if (s->dflag) {
|
| 3074 |
if (s->vm86)
|
| 3075 |
gen_op_movl_eflags_T0_vm(pc_start - s->cs_base); |
| 3076 |
else
|
| 3077 |
gen_op_movl_eflags_T0(); |
| 3078 |
} else {
|
| 3079 |
if (s->vm86)
|
| 3080 |
gen_op_movw_eflags_T0_vm(pc_start - s->cs_base); |
| 3081 |
else
|
| 3082 |
gen_op_movw_eflags_T0(); |
| 3083 |
} |
| 3084 |
gen_pop_update(s); |
| 3085 |
s->cc_op = CC_OP_EFLAGS; |
| 3086 |
break;
|
| 3087 |
case 0x9e: /* sahf */ |
| 3088 |
gen_op_mov_TN_reg[OT_BYTE][0][R_AH]();
|
| 3089 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3090 |
gen_op_set_cc_op(s->cc_op); |
| 3091 |
gen_op_movb_eflags_T0(); |
| 3092 |
s->cc_op = CC_OP_EFLAGS; |
| 3093 |
break;
|
| 3094 |
case 0x9f: /* lahf */ |
| 3095 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3096 |
gen_op_set_cc_op(s->cc_op); |
| 3097 |
gen_op_movl_T0_eflags(); |
| 3098 |
gen_op_mov_reg_T0[OT_BYTE][R_AH](); |
| 3099 |
break;
|
| 3100 |
case 0xf5: /* cmc */ |
| 3101 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3102 |
gen_op_set_cc_op(s->cc_op); |
| 3103 |
gen_op_cmc(); |
| 3104 |
s->cc_op = CC_OP_EFLAGS; |
| 3105 |
break;
|
| 3106 |
case 0xf8: /* clc */ |
| 3107 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3108 |
gen_op_set_cc_op(s->cc_op); |
| 3109 |
gen_op_clc(); |
| 3110 |
s->cc_op = CC_OP_EFLAGS; |
| 3111 |
break;
|
| 3112 |
case 0xf9: /* stc */ |
| 3113 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3114 |
gen_op_set_cc_op(s->cc_op); |
| 3115 |
gen_op_stc(); |
| 3116 |
s->cc_op = CC_OP_EFLAGS; |
| 3117 |
break;
|
| 3118 |
case 0xfc: /* cld */ |
| 3119 |
gen_op_cld(); |
| 3120 |
break;
|
| 3121 |
case 0xfd: /* std */ |
| 3122 |
gen_op_std(); |
| 3123 |
break;
|
| 3124 |
|
| 3125 |
/************************/
|
| 3126 |
/* bit operations */
|
| 3127 |
case 0x1ba: /* bt/bts/btr/btc Gv, im */ |
| 3128 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3129 |
modrm = ldub(s->pc++); |
| 3130 |
op = (modrm >> 3) & 7; |
| 3131 |
mod = (modrm >> 6) & 3; |
| 3132 |
rm = modrm & 7;
|
| 3133 |
if (mod != 3) { |
| 3134 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 3135 |
gen_op_ld_T0_A0[ot](); |
| 3136 |
} else {
|
| 3137 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 3138 |
} |
| 3139 |
/* load shift */
|
| 3140 |
val = ldub(s->pc++); |
| 3141 |
gen_op_movl_T1_im(val); |
| 3142 |
if (op < 4) |
| 3143 |
goto illegal_op;
|
| 3144 |
op -= 4;
|
| 3145 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
| 3146 |
s->cc_op = CC_OP_SARB + ot; |
| 3147 |
if (op != 0) { |
| 3148 |
if (mod != 3) |
| 3149 |
gen_op_st_T0_A0[ot](); |
| 3150 |
else
|
| 3151 |
gen_op_mov_reg_T0[ot][rm](); |
| 3152 |
} |
| 3153 |
break;
|
| 3154 |
case 0x1a3: /* bt Gv, Ev */ |
| 3155 |
op = 0;
|
| 3156 |
goto do_btx;
|
| 3157 |
case 0x1ab: /* bts */ |
| 3158 |
op = 1;
|
| 3159 |
goto do_btx;
|
| 3160 |
case 0x1b3: /* btr */ |
| 3161 |
op = 2;
|
| 3162 |
goto do_btx;
|
| 3163 |
case 0x1bb: /* btc */ |
| 3164 |
op = 3;
|
| 3165 |
do_btx:
|
| 3166 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3167 |
modrm = ldub(s->pc++); |
| 3168 |
reg = (modrm >> 3) & 7; |
| 3169 |
mod = (modrm >> 6) & 3; |
| 3170 |
rm = modrm & 7;
|
| 3171 |
gen_op_mov_TN_reg[OT_LONG][1][reg]();
|
| 3172 |
if (mod != 3) { |
| 3173 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 3174 |
/* specific case: we need to add a displacement */
|
| 3175 |
if (ot == OT_WORD)
|
| 3176 |
gen_op_add_bitw_A0_T1(); |
| 3177 |
else
|
| 3178 |
gen_op_add_bitl_A0_T1(); |
| 3179 |
gen_op_ld_T0_A0[ot](); |
| 3180 |
} else {
|
| 3181 |
gen_op_mov_TN_reg[ot][0][rm]();
|
| 3182 |
} |
| 3183 |
gen_op_btx_T0_T1_cc[ot - OT_WORD][op](); |
| 3184 |
s->cc_op = CC_OP_SARB + ot; |
| 3185 |
if (op != 0) { |
| 3186 |
if (mod != 3) |
| 3187 |
gen_op_st_T0_A0[ot](); |
| 3188 |
else
|
| 3189 |
gen_op_mov_reg_T0[ot][rm](); |
| 3190 |
} |
| 3191 |
break;
|
| 3192 |
case 0x1bc: /* bsf */ |
| 3193 |
case 0x1bd: /* bsr */ |
| 3194 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3195 |
modrm = ldub(s->pc++); |
| 3196 |
reg = (modrm >> 3) & 7; |
| 3197 |
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
|
| 3198 |
gen_op_bsx_T0_cc[ot - OT_WORD][b & 1]();
|
| 3199 |
/* NOTE: we always write back the result. Intel doc says it is
|
| 3200 |
undefined if T0 == 0 */
|
| 3201 |
gen_op_mov_reg_T0[ot][reg](); |
| 3202 |
s->cc_op = CC_OP_LOGICB + ot; |
| 3203 |
break;
|
| 3204 |
/************************/
|
| 3205 |
/* bcd */
|
| 3206 |
case 0x27: /* daa */ |
| 3207 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3208 |
gen_op_set_cc_op(s->cc_op); |
| 3209 |
gen_op_daa(); |
| 3210 |
s->cc_op = CC_OP_EFLAGS; |
| 3211 |
break;
|
| 3212 |
case 0x2f: /* das */ |
| 3213 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3214 |
gen_op_set_cc_op(s->cc_op); |
| 3215 |
gen_op_das(); |
| 3216 |
s->cc_op = CC_OP_EFLAGS; |
| 3217 |
break;
|
| 3218 |
case 0x37: /* aaa */ |
| 3219 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3220 |
gen_op_set_cc_op(s->cc_op); |
| 3221 |
gen_op_aaa(); |
| 3222 |
s->cc_op = CC_OP_EFLAGS; |
| 3223 |
break;
|
| 3224 |
case 0x3f: /* aas */ |
| 3225 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3226 |
gen_op_set_cc_op(s->cc_op); |
| 3227 |
gen_op_aas(); |
| 3228 |
s->cc_op = CC_OP_EFLAGS; |
| 3229 |
break;
|
| 3230 |
case 0xd4: /* aam */ |
| 3231 |
val = ldub(s->pc++); |
| 3232 |
gen_op_aam(val); |
| 3233 |
s->cc_op = CC_OP_LOGICB; |
| 3234 |
break;
|
| 3235 |
case 0xd5: /* aad */ |
| 3236 |
val = ldub(s->pc++); |
| 3237 |
gen_op_aad(val); |
| 3238 |
s->cc_op = CC_OP_LOGICB; |
| 3239 |
break;
|
| 3240 |
/************************/
|
| 3241 |
/* misc */
|
| 3242 |
case 0x90: /* nop */ |
| 3243 |
break;
|
| 3244 |
case 0xcc: /* int3 */ |
| 3245 |
gen_op_int3((long)pc_start);
|
| 3246 |
s->is_jmp = 1;
|
| 3247 |
break;
|
| 3248 |
case 0xcd: /* int N */ |
| 3249 |
val = ldub(s->pc++); |
| 3250 |
gen_op_int_im(val, pc_start - s->cs_base); |
| 3251 |
s->is_jmp = 1;
|
| 3252 |
break;
|
| 3253 |
case 0xce: /* into */ |
| 3254 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3255 |
gen_op_set_cc_op(s->cc_op); |
| 3256 |
gen_op_into(); |
| 3257 |
break;
|
| 3258 |
case 0xfa: /* cli */ |
| 3259 |
if (!s->vm86) {
|
| 3260 |
if (s->cpl <= s->iopl)
|
| 3261 |
gen_op_cli(); |
| 3262 |
else
|
| 3263 |
gen_op_gpf(pc_start - s->cs_base); |
| 3264 |
} else {
|
| 3265 |
if (s->iopl == 3) |
| 3266 |
gen_op_cli(); |
| 3267 |
else
|
| 3268 |
gen_op_cli_vm(); |
| 3269 |
} |
| 3270 |
break;
|
| 3271 |
case 0xfb: /* sti */ |
| 3272 |
if (!s->vm86) {
|
| 3273 |
if (s->cpl <= s->iopl)
|
| 3274 |
gen_op_sti(); |
| 3275 |
else
|
| 3276 |
gen_op_gpf(pc_start - s->cs_base); |
| 3277 |
} else {
|
| 3278 |
if (s->iopl == 3) |
| 3279 |
gen_op_sti(); |
| 3280 |
else
|
| 3281 |
gen_op_sti_vm(pc_start - s->cs_base); |
| 3282 |
} |
| 3283 |
break;
|
| 3284 |
case 0x62: /* bound */ |
| 3285 |
ot = dflag ? OT_LONG : OT_WORD; |
| 3286 |
modrm = ldub(s->pc++); |
| 3287 |
reg = (modrm >> 3) & 7; |
| 3288 |
mod = (modrm >> 6) & 3; |
| 3289 |
if (mod == 3) |
| 3290 |
goto illegal_op;
|
| 3291 |
gen_op_mov_reg_T0[ot][reg](); |
| 3292 |
gen_lea_modrm(s, modrm, ®_addr, &offset_addr); |
| 3293 |
if (ot == OT_WORD)
|
| 3294 |
gen_op_boundw(); |
| 3295 |
else
|
| 3296 |
gen_op_boundl(); |
| 3297 |
break;
|
| 3298 |
case 0x1c8 ... 0x1cf: /* bswap reg */ |
| 3299 |
reg = b & 7;
|
| 3300 |
gen_op_mov_TN_reg[OT_LONG][0][reg]();
|
| 3301 |
gen_op_bswapl_T0(); |
| 3302 |
gen_op_mov_reg_T0[OT_LONG][reg](); |
| 3303 |
break;
|
| 3304 |
case 0xd6: /* salc */ |
| 3305 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3306 |
gen_op_set_cc_op(s->cc_op); |
| 3307 |
gen_op_salc(); |
| 3308 |
break;
|
| 3309 |
case 0xe0: /* loopnz */ |
| 3310 |
case 0xe1: /* loopz */ |
| 3311 |
if (s->cc_op != CC_OP_DYNAMIC)
|
| 3312 |
gen_op_set_cc_op(s->cc_op); |
| 3313 |
/* FALL THRU */
|
| 3314 |
case 0xe2: /* loop */ |
| 3315 |
case 0xe3: /* jecxz */ |
| 3316 |
val = (int8_t)insn_get(s, OT_BYTE); |
| 3317 |
next_eip = s->pc - s->cs_base; |
| 3318 |
val += next_eip; |
| 3319 |
if (s->dflag == 0) |
| 3320 |
val &= 0xffff;
|
| 3321 |
gen_op_loop[s->aflag][b & 3](val, next_eip);
|
| 3322 |
s->is_jmp = 1;
|
| 3323 |
break;
|
| 3324 |
case 0x131: /* rdtsc */ |
| 3325 |
gen_op_rdtsc(); |
| 3326 |
break;
|
| 3327 |
case 0x1a2: /* cpuid */ |
| 3328 |
gen_op_cpuid(); |
| 3329 |
break;
|
| 3330 |
case 0xf4: /* hlt */ |
| 3331 |
if (s->cpl == 0) { |
| 3332 |
/* ignored */
|
| 3333 |
} else {
|
| 3334 |
gen_op_gpf(pc_start - s->cs_base); |
| 3335 |
} |
| 3336 |
break;
|
| 3337 |
default:
|
| 3338 |
goto illegal_op;
|
| 3339 |
} |
| 3340 |
/* lock generation */
|
| 3341 |
if (s->prefix & PREFIX_LOCK)
|
| 3342 |
gen_op_unlock(); |
| 3343 |
return (long)s->pc; |
| 3344 |
illegal_op:
|
| 3345 |
/* XXX: ensure that no lock was generated */
|
| 3346 |
return -1; |
| 3347 |
} |
| 3348 |
|
| 3349 |
#define CC_OSZAPC (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C)
|
| 3350 |
#define CC_OSZAP (CC_O | CC_S | CC_Z | CC_A | CC_P)
|
| 3351 |
|
| 3352 |
/* flags read by an operation */
|
| 3353 |
static uint16_t opc_read_flags[NB_OPS] = {
|
| 3354 |
[INDEX_op_aas] = CC_A, |
| 3355 |
[INDEX_op_aaa] = CC_A, |
| 3356 |
[INDEX_op_das] = CC_A | CC_C, |
| 3357 |
[INDEX_op_daa] = CC_A | CC_C, |
| 3358 |
|
| 3359 |
[INDEX_op_adcb_T0_T1_cc] = CC_C, |
| 3360 |
[INDEX_op_adcw_T0_T1_cc] = CC_C, |
| 3361 |
[INDEX_op_adcl_T0_T1_cc] = CC_C, |
| 3362 |
[INDEX_op_sbbb_T0_T1_cc] = CC_C, |
| 3363 |
[INDEX_op_sbbw_T0_T1_cc] = CC_C, |
| 3364 |
[INDEX_op_sbbl_T0_T1_cc] = CC_C, |
| 3365 |
|
| 3366 |
/* subtle: due to the incl/decl implementation, C is used */
|
| 3367 |
[INDEX_op_incl_T0_cc] = CC_C, |
| 3368 |
[INDEX_op_decl_T0_cc] = CC_C, |
| 3369 |
|
| 3370 |
[INDEX_op_into] = CC_O, |
| 3371 |
|
| 3372 |
[INDEX_op_jo_cc] = CC_O, |
| 3373 |
[INDEX_op_jb_cc] = CC_C, |
| 3374 |
[INDEX_op_jz_cc] = CC_Z, |
| 3375 |
[INDEX_op_jbe_cc] = CC_Z | CC_C, |
| 3376 |
[INDEX_op_js_cc] = CC_S, |
| 3377 |
[INDEX_op_jp_cc] = CC_P, |
| 3378 |
[INDEX_op_jl_cc] = CC_O | CC_S, |
| 3379 |
[INDEX_op_jle_cc] = CC_O | CC_S | CC_Z, |
| 3380 |
|
| 3381 |
[INDEX_op_jb_subb] = CC_C, |
| 3382 |
[INDEX_op_jb_subw] = CC_C, |
| 3383 |
[INDEX_op_jb_subl] = CC_C, |
| 3384 |
|
| 3385 |
[INDEX_op_jz_subb] = CC_Z, |
| 3386 |
[INDEX_op_jz_subw] = CC_Z, |
| 3387 |
[INDEX_op_jz_subl] = CC_Z, |
| 3388 |
|
| 3389 |
[INDEX_op_jbe_subb] = CC_Z | CC_C, |
| 3390 |
[INDEX_op_jbe_subw] = CC_Z | CC_C, |
| 3391 |
[INDEX_op_jbe_subl] = CC_Z | CC_C, |
| 3392 |
|
| 3393 |
[INDEX_op_js_subb] = CC_S, |
| 3394 |
[INDEX_op_js_subw] = CC_S, |
| 3395 |
[INDEX_op_js_subl] = CC_S, |
| 3396 |
|
| 3397 |
[INDEX_op_jl_subb] = CC_O | CC_S, |
| 3398 |
[INDEX_op_jl_subw] = CC_O | CC_S, |
| 3399 |
[INDEX_op_jl_subl] = CC_O | CC_S, |
| 3400 |
|
| 3401 |
[INDEX_op_jle_subb] = CC_O | CC_S | CC_Z, |
| 3402 |
[INDEX_op_jle_subw] = CC_O | CC_S | CC_Z, |
| 3403 |
[INDEX_op_jle_subl] = CC_O | CC_S | CC_Z, |
| 3404 |
|
| 3405 |
[INDEX_op_loopnzw] = CC_Z, |
| 3406 |
[INDEX_op_loopnzl] = CC_Z, |
| 3407 |
[INDEX_op_loopzw] = CC_Z, |
| 3408 |
[INDEX_op_loopzl] = CC_Z, |
| 3409 |
|
| 3410 |
[INDEX_op_seto_T0_cc] = CC_O, |
| 3411 |
[INDEX_op_setb_T0_cc] = CC_C, |
| 3412 |
[INDEX_op_setz_T0_cc] = CC_Z, |
| 3413 |
[INDEX_op_setbe_T0_cc] = CC_Z | CC_C, |
| 3414 |
[INDEX_op_sets_T0_cc] = CC_S, |
| 3415 |
[INDEX_op_setp_T0_cc] = CC_P, |
| 3416 |
[INDEX_op_setl_T0_cc] = CC_O | CC_S, |
| 3417 |
[INDEX_op_setle_T0_cc] = CC_O | CC_S | CC_Z, |
| 3418 |
|
| 3419 |
[INDEX_op_setb_T0_subb] = CC_C, |
| 3420 |
[INDEX_op_setb_T0_subw] = CC_C, |
| 3421 |
[INDEX_op_setb_T0_subl] = CC_C, |
| 3422 |
|
| 3423 |
[INDEX_op_setz_T0_subb] = CC_Z, |
| 3424 |
[INDEX_op_setz_T0_subw] = CC_Z, |
| 3425 |
[INDEX_op_setz_T0_subl] = CC_Z, |
| 3426 |
|
| 3427 |
[INDEX_op_setbe_T0_subb] = CC_Z | CC_C, |
| 3428 |
[INDEX_op_setbe_T0_subw] = CC_Z | CC_C, |
| 3429 |
[INDEX_op_setbe_T0_subl] = CC_Z | CC_C, |
| 3430 |
|
| 3431 |
[INDEX_op_sets_T0_subb] = CC_S, |
| 3432 |
[INDEX_op_sets_T0_subw] = CC_S, |
| 3433 |
[INDEX_op_sets_T0_subl] = CC_S, |
| 3434 |
|
| 3435 |
[INDEX_op_setl_T0_subb] = CC_O | CC_S, |
| 3436 |
[INDEX_op_setl_T0_subw] = CC_O | CC_S, |
| 3437 |
[INDEX_op_setl_T0_subl] = CC_O | CC_S, |
| 3438 |
|
| 3439 |
[INDEX_op_setle_T0_subb] = CC_O | CC_S | CC_Z, |
| 3440 |
[INDEX_op_setle_T0_subw] = CC_O | CC_S | CC_Z, |
| 3441 |
[INDEX_op_setle_T0_subl] = CC_O | CC_S | CC_Z, |
| 3442 |
|
| 3443 |
[INDEX_op_movl_T0_eflags] = CC_OSZAPC, |
| 3444 |
[INDEX_op_movl_T0_eflags_vm] = CC_OSZAPC, |
| 3445 |
[INDEX_op_cmc] = CC_C, |
| 3446 |
[INDEX_op_salc] = CC_C, |
| 3447 |
|
| 3448 |
[INDEX_op_rclb_T0_T1_cc] = CC_C, |
| 3449 |
[INDEX_op_rclw_T0_T1_cc] = CC_C, |
| 3450 |
[INDEX_op_rcll_T0_T1_cc] = CC_C, |
| 3451 |
[INDEX_op_rcrb_T0_T1_cc] = CC_C, |
| 3452 |
[INDEX_op_rcrw_T0_T1_cc] = CC_C, |
| 3453 |
[INDEX_op_rcrl_T0_T1_cc] = CC_C, |
| 3454 |
}; |
| 3455 |
|
| 3456 |
/* flags written by an operation */
|
| 3457 |
static uint16_t opc_write_flags[NB_OPS] = {
|
| 3458 |
[INDEX_op_addl_T0_T1_cc] = CC_OSZAPC, |
| 3459 |
[INDEX_op_orl_T0_T1_cc] = CC_OSZAPC, |
| 3460 |
[INDEX_op_adcb_T0_T1_cc] = CC_OSZAPC, |
| 3461 |
[INDEX_op_adcw_T0_T1_cc] = CC_OSZAPC, |
| 3462 |
[INDEX_op_adcl_T0_T1_cc] = CC_OSZAPC, |
| 3463 |
[INDEX_op_sbbb_T0_T1_cc] = CC_OSZAPC, |
| 3464 |
[INDEX_op_sbbw_T0_T1_cc] = CC_OSZAPC, |
| 3465 |
[INDEX_op_sbbl_T0_T1_cc] = CC_OSZAPC, |
| 3466 |
[INDEX_op_andl_T0_T1_cc] = CC_OSZAPC, |
| 3467 |
[INDEX_op_subl_T0_T1_cc] = CC_OSZAPC, |
| 3468 |
[INDEX_op_xorl_T0_T1_cc] = CC_OSZAPC, |
| 3469 |
[INDEX_op_cmpl_T0_T1_cc] = CC_OSZAPC, |
| 3470 |
[INDEX_op_negl_T0_cc] = CC_OSZAPC, |
| 3471 |
/* subtle: due to the incl/decl implementation, C is used */
|
| 3472 |
[INDEX_op_incl_T0_cc] = CC_OSZAPC, |
| 3473 |
[INDEX_op_decl_T0_cc] = CC_OSZAPC, |
| 3474 |
[INDEX_op_testl_T0_T1_cc] = CC_OSZAPC, |
| 3475 |
|
| 3476 |
[INDEX_op_mulb_AL_T0] = CC_OSZAPC, |
| 3477 |
[INDEX_op_imulb_AL_T0] = CC_OSZAPC, |
| 3478 |
[INDEX_op_mulw_AX_T0] = CC_OSZAPC, |
| 3479 |
[INDEX_op_imulw_AX_T0] = CC_OSZAPC, |
| 3480 |
[INDEX_op_mull_EAX_T0] = CC_OSZAPC, |
| 3481 |
[INDEX_op_imull_EAX_T0] = CC_OSZAPC, |
| 3482 |
[INDEX_op_imulw_T0_T1] = CC_OSZAPC, |
| 3483 |
[INDEX_op_imull_T0_T1] = CC_OSZAPC, |
| 3484 |
|
| 3485 |
/* bcd */
|
| 3486 |
[INDEX_op_aam] = CC_OSZAPC, |
| 3487 |
[INDEX_op_aad] = CC_OSZAPC, |
| 3488 |
[INDEX_op_aas] = CC_OSZAPC, |
| 3489 |
[INDEX_op_aaa] = CC_OSZAPC, |
| 3490 |
[INDEX_op_das] = CC_OSZAPC, |
| 3491 |
[INDEX_op_daa] = CC_OSZAPC, |
| 3492 |
|
| 3493 |
[INDEX_op_movb_eflags_T0] = CC_S | CC_Z | CC_A | CC_P | CC_C, |
| 3494 |
[INDEX_op_movw_eflags_T0] = CC_OSZAPC, |
| 3495 |
[INDEX_op_movw_eflags_T0_vm] = CC_OSZAPC, |
| 3496 |
[INDEX_op_movl_eflags_T0] = CC_OSZAPC, |
| 3497 |
[INDEX_op_movl_eflags_T0_vm] = CC_OSZAPC, |
| 3498 |
[INDEX_op_clc] = CC_C, |
| 3499 |
[INDEX_op_stc] = CC_C, |
| 3500 |
[INDEX_op_cmc] = CC_C, |
| 3501 |
|
| 3502 |
[INDEX_op_rolb_T0_T1_cc] = CC_O | CC_C, |
| 3503 |
[INDEX_op_rolw_T0_T1_cc] = CC_O | CC_C, |
| 3504 |
[INDEX_op_roll_T0_T1_cc] = CC_O | CC_C, |
| 3505 |
[INDEX_op_rorb_T0_T1_cc] = CC_O | CC_C, |
| 3506 |
[INDEX_op_rorw_T0_T1_cc] = CC_O | CC_C, |
| 3507 |
[INDEX_op_rorl_T0_T1_cc] = CC_O | CC_C, |
| 3508 |
|
| 3509 |
[INDEX_op_rclb_T0_T1_cc] = CC_O | CC_C, |
| 3510 |
[INDEX_op_rclw_T0_T1_cc] = CC_O | CC_C, |
| 3511 |
[INDEX_op_rcll_T0_T1_cc] = CC_O | CC_C, |
| 3512 |
[INDEX_op_rcrb_T0_T1_cc] = CC_O | CC_C, |
| 3513 |
[INDEX_op_rcrw_T0_T1_cc] = CC_O | CC_C, |
| 3514 |
[INDEX_op_rcrl_T0_T1_cc] = CC_O | CC_C, |
| 3515 |
|
| 3516 |
[INDEX_op_shlb_T0_T1_cc] = CC_OSZAPC, |
| 3517 |
[INDEX_op_shlw_T0_T1_cc] = CC_OSZAPC, |
| 3518 |
[INDEX_op_shll_T0_T1_cc] = CC_OSZAPC, |
| 3519 |
|
| 3520 |
[INDEX_op_shrb_T0_T1_cc] = CC_OSZAPC, |
| 3521 |
[INDEX_op_shrw_T0_T1_cc] = CC_OSZAPC, |
| 3522 |
[INDEX_op_shrl_T0_T1_cc] = CC_OSZAPC, |
| 3523 |
|
| 3524 |
[INDEX_op_sarb_T0_T1_cc] = CC_OSZAPC, |
| 3525 |
[INDEX_op_sarw_T0_T1_cc] = CC_OSZAPC, |
| 3526 |
[INDEX_op_sarl_T0_T1_cc] = CC_OSZAPC, |
| 3527 |
|
| 3528 |
[INDEX_op_shldw_T0_T1_ECX_cc] = CC_OSZAPC, |
| 3529 |
[INDEX_op_shldl_T0_T1_ECX_cc] = CC_OSZAPC, |
| 3530 |
[INDEX_op_shldw_T0_T1_im_cc] = CC_OSZAPC, |
| 3531 |
[INDEX_op_shldl_T0_T1_im_cc] = CC_OSZAPC, |
| 3532 |
|
| 3533 |
[INDEX_op_shrdw_T0_T1_ECX_cc] = CC_OSZAPC, |
| 3534 |
[INDEX_op_shrdl_T0_T1_ECX_cc] = CC_OSZAPC, |
| 3535 |
[INDEX_op_shrdw_T0_T1_im_cc] = CC_OSZAPC, |
| 3536 |
[INDEX_op_shrdl_T0_T1_im_cc] = CC_OSZAPC, |
| 3537 |
|
| 3538 |
[INDEX_op_btw_T0_T1_cc] = CC_OSZAPC, |
| 3539 |
[INDEX_op_btl_T0_T1_cc] = CC_OSZAPC, |
| 3540 |
[INDEX_op_btsw_T0_T1_cc] = CC_OSZAPC, |
| 3541 |
[INDEX_op_btsl_T0_T1_cc] = CC_OSZAPC, |
| 3542 |
[INDEX_op_btrw_T0_T1_cc] = CC_OSZAPC, |
| 3543 |
[INDEX_op_btrl_T0_T1_cc] = CC_OSZAPC, |
| 3544 |
[INDEX_op_btcw_T0_T1_cc] = CC_OSZAPC, |
| 3545 |
[INDEX_op_btcl_T0_T1_cc] = CC_OSZAPC, |
| 3546 |
|
| 3547 |
[INDEX_op_bsfw_T0_cc] = CC_OSZAPC, |
| 3548 |
[INDEX_op_bsfl_T0_cc] = CC_OSZAPC, |
| 3549 |
[INDEX_op_bsrw_T0_cc] = CC_OSZAPC, |
| 3550 |
[INDEX_op_bsrl_T0_cc] = CC_OSZAPC, |
| 3551 |
|
| 3552 |
#undef STRINGOP
|
| 3553 |
#define STRINGOP(x) \
|
| 3554 |
[INDEX_op_ ## x ## b_fast] = CC_OSZAPC, \ |
| 3555 |
[INDEX_op_ ## x ## w_fast] = CC_OSZAPC, \ |
| 3556 |
[INDEX_op_ ## x ## l_fast] = CC_OSZAPC, \ |
| 3557 |
[INDEX_op_ ## x ## b_a32] = CC_OSZAPC, \ |
| 3558 |
[INDEX_op_ ## x ## w_a32] = CC_OSZAPC, \ |
| 3559 |
[INDEX_op_ ## x ## l_a32] = CC_OSZAPC, \ |
| 3560 |
[INDEX_op_ ## x ## b_a16] = CC_OSZAPC, \ |
| 3561 |
[INDEX_op_ ## x ## w_a16] = CC_OSZAPC, \ |
| 3562 |
[INDEX_op_ ## x ## l_a16] = CC_OSZAPC, |
| 3563 |
|
| 3564 |
STRINGOP(scas) |
| 3565 |
STRINGOP(repz_scas) |
| 3566 |
STRINGOP(repnz_scas) |
| 3567 |
STRINGOP(cmps) |
| 3568 |
STRINGOP(repz_cmps) |
| 3569 |
STRINGOP(repnz_cmps) |
| 3570 |
|
| 3571 |
[INDEX_op_cmpxchgb_T0_T1_EAX_cc] = CC_OSZAPC, |
| 3572 |
[INDEX_op_cmpxchgw_T0_T1_EAX_cc] = CC_OSZAPC, |
| 3573 |
[INDEX_op_cmpxchgl_T0_T1_EAX_cc] = CC_OSZAPC, |
| 3574 |
|
| 3575 |
[INDEX_op_cmpxchg8b] = CC_Z, |
| 3576 |
}; |
| 3577 |
|
| 3578 |
/* simpler form of an operation if no flags need to be generated */
|
| 3579 |
static uint16_t opc_simpler[NB_OPS] = {
|
| 3580 |
[INDEX_op_addl_T0_T1_cc] = INDEX_op_addl_T0_T1, |
| 3581 |
[INDEX_op_orl_T0_T1_cc] = INDEX_op_orl_T0_T1, |
| 3582 |
[INDEX_op_andl_T0_T1_cc] = INDEX_op_andl_T0_T1, |
| 3583 |
[INDEX_op_subl_T0_T1_cc] = INDEX_op_subl_T0_T1, |
| 3584 |
[INDEX_op_xorl_T0_T1_cc] = INDEX_op_xorl_T0_T1, |
| 3585 |
[INDEX_op_negl_T0_cc] = INDEX_op_negl_T0, |
| 3586 |
[INDEX_op_incl_T0_cc] = INDEX_op_incl_T0, |
| 3587 |
[INDEX_op_decl_T0_cc] = INDEX_op_decl_T0, |
| 3588 |
|
| 3589 |
[INDEX_op_rolb_T0_T1_cc] = INDEX_op_rolb_T0_T1, |
| 3590 |
[INDEX_op_rolw_T0_T1_cc] = INDEX_op_rolw_T0_T1, |
| 3591 |
[INDEX_op_roll_T0_T1_cc] = INDEX_op_roll_T0_T1, |
| 3592 |
|
| 3593 |
[INDEX_op_rorb_T0_T1_cc] = INDEX_op_rorb_T0_T1, |
| 3594 |
[INDEX_op_rorw_T0_T1_cc] = INDEX_op_rorw_T0_T1, |
| 3595 |
[INDEX_op_rorl_T0_T1_cc] = INDEX_op_rorl_T0_T1, |
| 3596 |
|
| 3597 |
[INDEX_op_shlb_T0_T1_cc] = INDEX_op_shlb_T0_T1, |
| 3598 |
[INDEX_op_shlw_T0_T1_cc] = INDEX_op_shlw_T0_T1, |
| 3599 |
[INDEX_op_shll_T0_T1_cc] = INDEX_op_shll_T0_T1, |
| 3600 |
|
| 3601 |
[INDEX_op_shrb_T0_T1_cc] = INDEX_op_shrb_T0_T1, |
| 3602 |
[INDEX_op_shrw_T0_T1_cc] = INDEX_op_shrw_T0_T1, |
| 3603 |
[INDEX_op_shrl_T0_T1_cc] = INDEX_op_shrl_T0_T1, |
| 3604 |
|
| 3605 |
[INDEX_op_sarb_T0_T1_cc] = INDEX_op_sarb_T0_T1, |
| 3606 |
[INDEX_op_sarw_T0_T1_cc] = INDEX_op_sarw_T0_T1, |
| 3607 |
[INDEX_op_sarl_T0_T1_cc] = INDEX_op_sarl_T0_T1, |
| 3608 |
}; |
| 3609 |
|
| 3610 |
static void optimize_flags_init(void) |
| 3611 |
{
|
| 3612 |
int i;
|
| 3613 |
/* put default values in arrays */
|
| 3614 |
for(i = 0; i < NB_OPS; i++) { |
| 3615 |
if (opc_simpler[i] == 0) |
| 3616 |
opc_simpler[i] = i; |
| 3617 |
} |
| 3618 |
} |
| 3619 |
|
| 3620 |
/* CPU flags computation optimization: we move backward thru the
|
| 3621 |
generated code to see which flags are needed. The operation is
|
| 3622 |
modified if suitable */
|
| 3623 |
static void optimize_flags(uint16_t *opc_buf, int opc_buf_len) |
| 3624 |
{
|
| 3625 |
uint16_t *opc_ptr; |
| 3626 |
int live_flags, write_flags, op;
|
| 3627 |
|
| 3628 |
opc_ptr = opc_buf + opc_buf_len; |
| 3629 |
/* live_flags contains the flags needed by the next instructions
|
| 3630 |
in the code. At the end of the bloc, we consider that all the
|
| 3631 |
flags are live. */
|
| 3632 |
live_flags = CC_OSZAPC; |
| 3633 |
while (opc_ptr > opc_buf) {
|
| 3634 |
op = *--opc_ptr; |
| 3635 |
/* if none of the flags written by the instruction is used,
|
| 3636 |
then we can try to find a simpler instruction */
|
| 3637 |
write_flags = opc_write_flags[op]; |
| 3638 |
if ((live_flags & write_flags) == 0) { |
| 3639 |
*opc_ptr = opc_simpler[op]; |
| 3640 |
} |
| 3641 |
/* compute the live flags before the instruction */
|
| 3642 |
live_flags &= ~write_flags; |
| 3643 |
live_flags |= opc_read_flags[op]; |
| 3644 |
} |
| 3645 |
} |
| 3646 |
|
| 3647 |
|
| 3648 |
#ifdef DEBUG_DISAS
|
| 3649 |
static const char *op_str[] = { |
| 3650 |
#define DEF(s, n) #s, |
| 3651 |
#include "opc-i386.h" |
| 3652 |
#undef DEF
|
| 3653 |
}; |
| 3654 |
|
| 3655 |
static uint8_t op_nb_args[] = {
|
| 3656 |
#define DEF(s, n) n,
|
| 3657 |
#include "opc-i386.h" |
| 3658 |
#undef DEF
|
| 3659 |
}; |
| 3660 |
|
| 3661 |
static void dump_ops(const uint16_t *opc_buf, const uint32_t *opparam_buf) |
| 3662 |
{
|
| 3663 |
const uint16_t *opc_ptr;
|
| 3664 |
const uint32_t *opparam_ptr;
|
| 3665 |
int c, n, i;
|
| 3666 |
|
| 3667 |
opc_ptr = opc_buf; |
| 3668 |
opparam_ptr = opparam_buf; |
| 3669 |
for(;;) {
|
| 3670 |
c = *opc_ptr++; |
| 3671 |
n = op_nb_args[c]; |
| 3672 |
fprintf(logfile, "0x%04x: %s", opc_ptr - opc_buf - 1, op_str[c]); |
| 3673 |
for(i = 0; i < n; i++) { |
| 3674 |
fprintf(logfile, " 0x%x", opparam_ptr[i]);
|
| 3675 |
} |
| 3676 |
fprintf(logfile, "\n");
|
| 3677 |
if (c == INDEX_op_end)
|
| 3678 |
break;
|
| 3679 |
opparam_ptr += n; |
| 3680 |
} |
| 3681 |
} |
| 3682 |
|
| 3683 |
#endif
|
| 3684 |
|
| 3685 |
/* XXX: make this buffer thread safe */
|
| 3686 |
/* XXX: make safe guess about sizes */
|
| 3687 |
#define MAX_OP_PER_INSTR 32 |
| 3688 |
#define OPC_BUF_SIZE 512 |
| 3689 |
#define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR)
|
| 3690 |
|
| 3691 |
#define OPPARAM_BUF_SIZE (OPC_BUF_SIZE * 3) |
| 3692 |
|
| 3693 |
static uint16_t gen_opc_buf[OPC_BUF_SIZE];
|
| 3694 |
static uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE];
|
| 3695 |
|
| 3696 |
/* return non zero if the very first instruction is invalid so that
|
| 3697 |
the virtual CPU can trigger an exception. */
|
| 3698 |
int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size, |
| 3699 |
int *gen_code_size_ptr,
|
| 3700 |
uint8_t *pc_start, uint8_t *cs_base, int flags)
|
| 3701 |
{
|
| 3702 |
DisasContext dc1, *dc = &dc1; |
| 3703 |
uint8_t *pc_ptr; |
| 3704 |
uint16_t *gen_opc_end; |
| 3705 |
int gen_code_size;
|
| 3706 |
long ret;
|
| 3707 |
|
| 3708 |
/* generate intermediate code */
|
| 3709 |
|
| 3710 |
dc->code32 = (flags >> GEN_FLAG_CODE32_SHIFT) & 1;
|
| 3711 |
dc->ss32 = (flags >> GEN_FLAG_SS32_SHIFT) & 1;
|
| 3712 |
dc->addseg = (flags >> GEN_FLAG_ADDSEG_SHIFT) & 1;
|
| 3713 |
dc->f_st = (flags >> GEN_FLAG_ST_SHIFT) & 7;
|
| 3714 |
dc->vm86 = (flags >> GEN_FLAG_VM_SHIFT) & 1;
|
| 3715 |
dc->cpl = (flags >> GEN_FLAG_CPL_SHIFT) & 3;
|
| 3716 |
dc->iopl = (flags >> GEN_FLAG_IOPL_SHIFT) & 3;
|
| 3717 |
dc->cc_op = CC_OP_DYNAMIC; |
| 3718 |
dc->cs_base = cs_base; |
| 3719 |
|
| 3720 |
gen_opc_ptr = gen_opc_buf; |
| 3721 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
| 3722 |
gen_opparam_ptr = gen_opparam_buf; |
| 3723 |
|
| 3724 |
dc->is_jmp = 0;
|
| 3725 |
pc_ptr = pc_start; |
| 3726 |
do {
|
| 3727 |
ret = disas_insn(dc, pc_ptr); |
| 3728 |
if (ret == -1) { |
| 3729 |
/* we trigger an illegal instruction operation only if it
|
| 3730 |
is the first instruction. Otherwise, we simply stop
|
| 3731 |
generating the code just before it */
|
| 3732 |
if (pc_ptr == pc_start)
|
| 3733 |
return -1; |
| 3734 |
else
|
| 3735 |
break;
|
| 3736 |
} |
| 3737 |
pc_ptr = (void *)ret;
|
| 3738 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end);
|
| 3739 |
/* we must store the eflags state if it is not already done */
|
| 3740 |
if (dc->cc_op != CC_OP_DYNAMIC)
|
| 3741 |
gen_op_set_cc_op(dc->cc_op); |
| 3742 |
if (dc->is_jmp != 1) { |
| 3743 |
/* we add an additionnal jmp to update the simulated PC */
|
| 3744 |
gen_op_jmp_im(ret - (unsigned long)dc->cs_base); |
| 3745 |
} |
| 3746 |
*gen_opc_ptr = INDEX_op_end; |
| 3747 |
|
| 3748 |
#ifdef DEBUG_DISAS
|
| 3749 |
if (loglevel) {
|
| 3750 |
fprintf(logfile, "----------------\n");
|
| 3751 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
| 3752 |
disas(logfile, pc_start, pc_ptr - pc_start, |
| 3753 |
dc->code32 ? DISAS_I386_I386 : DISAS_I386_I8086); |
| 3754 |
fprintf(logfile, "\n");
|
| 3755 |
|
| 3756 |
fprintf(logfile, "OP:\n");
|
| 3757 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
| 3758 |
fprintf(logfile, "\n");
|
| 3759 |
} |
| 3760 |
#endif
|
| 3761 |
|
| 3762 |
/* optimize flag computations */
|
| 3763 |
optimize_flags(gen_opc_buf, gen_opc_ptr - gen_opc_buf); |
| 3764 |
|
| 3765 |
#ifdef DEBUG_DISAS
|
| 3766 |
if (loglevel) {
|
| 3767 |
fprintf(logfile, "AFTER FLAGS OPT:\n");
|
| 3768 |
dump_ops(gen_opc_buf, gen_opparam_buf); |
| 3769 |
fprintf(logfile, "\n");
|
| 3770 |
} |
| 3771 |
#endif
|
| 3772 |
|
| 3773 |
/* generate machine code */
|
| 3774 |
gen_code_size = dyngen_code(gen_code_buf, gen_opc_buf, gen_opparam_buf); |
| 3775 |
flush_icache_range((unsigned long)gen_code_buf, (unsigned long)(gen_code_buf + gen_code_size)); |
| 3776 |
*gen_code_size_ptr = gen_code_size; |
| 3777 |
|
| 3778 |
#ifdef DEBUG_DISAS
|
| 3779 |
if (loglevel) {
|
| 3780 |
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
|
| 3781 |
disas(logfile, gen_code_buf, *gen_code_size_ptr, DISAS_TARGET); |
| 3782 |
fprintf(logfile, "\n");
|
| 3783 |
fflush(logfile); |
| 3784 |
} |
| 3785 |
#endif
|
| 3786 |
return 0; |
| 3787 |
} |
| 3788 |
|
| 3789 |
CPUX86State *cpu_x86_init(void)
|
| 3790 |
{
|
| 3791 |
CPUX86State *env; |
| 3792 |
int i;
|
| 3793 |
static int inited; |
| 3794 |
|
| 3795 |
cpu_x86_tblocks_init(); |
| 3796 |
|
| 3797 |
env = malloc(sizeof(CPUX86State));
|
| 3798 |
if (!env)
|
| 3799 |
return NULL; |
| 3800 |
memset(env, 0, sizeof(CPUX86State)); |
| 3801 |
/* basic FPU init */
|
| 3802 |
for(i = 0;i < 8; i++) |
| 3803 |
env->fptags[i] = 1;
|
| 3804 |
env->fpuc = 0x37f;
|
| 3805 |
/* flags setup : we activate the IRQs by default as in user mode */
|
| 3806 |
env->eflags = 0x2 | IF_MASK;
|
| 3807 |
|
| 3808 |
/* init various static tables */
|
| 3809 |
if (!inited) {
|
| 3810 |
inited = 1;
|
| 3811 |
optimize_flags_init(); |
| 3812 |
} |
| 3813 |
return env;
|
| 3814 |
} |
| 3815 |
|
| 3816 |
void cpu_x86_close(CPUX86State *env)
|
| 3817 |
{
|
| 3818 |
free(env); |
| 3819 |
} |