path: root/include/opcode/i386.h

/* i386-opcode.h -- Intel 80386 opcode table
   Copyright 1989, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation.

This file is part of GAS, the GNU Assembler, and GDB, the GNU Debugger.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* The NON_BROKEN_OPCODES cases use the operands in the reverse order
   from that documented in the Intel manuals.  The opcode values are
   such that they actually generate different instructions.  These
   values must not be changed, as existing code depends upon the
   arguably erroneous behaviour.  */

static const template i386_optab[] = {

#define _ None
/* move instructions */
#define MOV_AX_DISP32 0xa0
{ "mov", 2, 0xa0, _, DW|NoModrm, { Disp32, Acc, 0 } },
{ "mov", 2, 0x88, _, DW|Modrm, { Reg, Reg|Mem, 0 } },
{ "mov", 2, 0xb0, _, ShortFormW, { Imm, Reg, 0 } },
{ "mov", 2, 0xc6, _,  W|Modrm,  { Imm, Reg|Mem, 0 } },
{ "mov", 2, 0x8c, _, D|Modrm,  { SReg3|SReg2, Reg16|Mem, 0 } },
/* move to/from control debug registers */
{ "mov", 2, 0x0f20, _, D|Modrm, { Control, Reg32, 0} },
{ "mov", 2, 0x0f21, _, D|Modrm, { Debug, Reg32, 0} },
{ "mov", 2, 0x0f24, _, D|Modrm, { Test, Reg32, 0} },

/* move with sign extend */
/* "movsbl" & "movsbw" must not be unified into "movsb" to avoid
   conflict with the "movs" string move instruction.  Thus,
   {"movsb", 2, 0x0fbe, _, ReverseRegRegmem|Modrm, { Reg8|Mem,  Reg16|Reg32, 0} },
   is not kosher; we must seperate the two instructions. */
{"movsbl", 2, 0x0fbe, _, ReverseRegRegmem|Modrm|Data32, { Reg8|Mem,  Reg32, 0} },
{"movsbw", 2, 0x0fbe, _, ReverseRegRegmem|Modrm|Data16, { Reg8|Mem,  Reg16, 0} },
{"movswl", 2, 0x0fbf, _, ReverseRegRegmem|Modrm, { Reg16|Mem, Reg32, 0} },

/* move with zero extend */
{"movzb", 2, 0x0fb6, _, ReverseRegRegmem|Modrm, { Reg8|Mem, Reg16|Reg32, 0} },
{"movzwl", 2, 0x0fb7, _, ReverseRegRegmem|Modrm, { Reg16|Mem, Reg32, 0} },

/* push instructions */
{"push", 1, 0x50, _, ShortForm, { WordReg,0,0 } },
{"push", 1, 0xff, 0x6,  Modrm, { WordReg|WordMem, 0, 0 } },
{"push", 1, 0x6a, _, NoModrm, { Imm8S, 0, 0} },
{"push", 1, 0x68, _, NoModrm, { Imm16|Imm32, 0, 0} },
{"push", 1, 0x06, _,  Seg2ShortForm, { SReg2,0,0 } },
{"push", 1, 0x0fa0, _, Seg3ShortForm, { SReg3,0,0 } },
/* push all */
{"pusha", 0, 0x60, _, NoModrm, { 0, 0, 0 } },

/* pop instructions */
{"pop", 1, 0x58, _, ShortForm, { WordReg,0,0 } },
{"pop", 1, 0x8f, 0x0,  Modrm, { WordReg|WordMem, 0, 0 } },
#define POP_SEG_SHORT 0x7
{"pop", 1, 0x07, _,  Seg2ShortForm, { SReg2,0,0 } },
{"pop", 1, 0x0fa1, _, Seg3ShortForm, { SReg3,0,0 } },
/* pop all */
{"popa", 0, 0x61, _, NoModrm, { 0, 0, 0 } },

/* xchg exchange instructions
   xchg commutes:  we allow both operand orders */
{"xchg", 2, 0x90, _, ShortForm, { WordReg, Acc, 0 } },
{"xchg", 2, 0x90, _, ShortForm, { Acc, WordReg, 0 } },
{"xchg", 2, 0x86, _, W|Modrm, { Reg, Reg|Mem, 0 } },
{"xchg", 2, 0x86, _, W|Modrm, { Reg|Mem, Reg, 0 } },

/* in/out from ports */
{"in", 2, 0xe4, _, W|NoModrm, { Imm8, Acc, 0 } },
{"in", 2, 0xec, _, W|NoModrm, { InOutPortReg, Acc, 0 } },
{"in", 1, 0xe4, _, W|NoModrm, { Imm8, 0, 0 } },
{"in", 1, 0xec, _, W|NoModrm, { InOutPortReg, 0, 0 } },
{"out", 2, 0xe6, _, W|NoModrm, { Acc, Imm8, 0 } },
{"out", 2, 0xee, _, W|NoModrm, { Acc, InOutPortReg, 0 } },
{"out", 1, 0xe6, _, W|NoModrm, { Imm8, 0, 0 } },
{"out", 1, 0xee, _, W|NoModrm, { InOutPortReg, 0, 0 } },

/* load effective address */
{"lea", 2, 0x8d, _, Modrm, { WordMem, WordReg, 0 } },

/* load segment registers from memory */
{"lds", 2, 0xc5, _, Modrm, { Mem, Reg32, 0} },
{"les", 2, 0xc4, _, Modrm, { Mem, Reg32, 0} },
{"lfs", 2, 0x0fb4, _, Modrm, { Mem, Reg32, 0} },
{"lgs", 2, 0x0fb5, _, Modrm, { Mem, Reg32, 0} },
{"lss", 2, 0x0fb2, _, Modrm, { Mem, Reg32, 0} },

/* flags register instructions */
{"clc", 0, 0xf8, _, NoModrm, { 0, 0, 0} },
{"cld", 0, 0xfc, _, NoModrm, { 0, 0, 0} },
{"cli", 0, 0xfa, _, NoModrm, { 0, 0, 0} },
{"clts", 0, 0x0f06, _, NoModrm, { 0, 0, 0} },
{"cmc", 0, 0xf5, _, NoModrm, { 0, 0, 0} },
{"lahf", 0, 0x9f, _, NoModrm, { 0, 0, 0} },
{"sahf", 0, 0x9e, _, NoModrm, { 0, 0, 0} },
{"pushfl", 0, 0x9c, _, NoModrm|Data32, { 0, 0, 0} },
{"popfl", 0, 0x9d, _, NoModrm|Data32, { 0, 0, 0} },
{"pushfw", 0, 0x9c, _, NoModrm|Data16, { 0, 0, 0} },
{"popfw", 0, 0x9d, _, NoModrm|Data16, { 0, 0, 0} },
{"pushf", 0, 0x9c, _, NoModrm, { 0, 0, 0} },
{"popf", 0, 0x9d, _, NoModrm, { 0, 0, 0} },
{"stc", 0, 0xf9, _, NoModrm, { 0, 0, 0} },
{"std", 0, 0xfd, _, NoModrm, { 0, 0, 0} },
{"sti", 0, 0xfb, _, NoModrm, { 0, 0, 0} },

{"add", 2, 0x0,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"add", 2, 0x83, 0,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"add", 2, 0x4,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"add", 2, 0x80, 0, W|Modrm, { Imm, Reg|Mem, 0} },

{"inc", 1, 0x40, _, ShortForm, { WordReg, 0, 0} },
{"inc", 1, 0xfe, 0, W|Modrm, { Reg|Mem, 0, 0} },

{"sub", 2, 0x28,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"sub", 2, 0x83, 5,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"sub", 2, 0x2c,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"sub", 2, 0x80, 5,  W|Modrm, { Imm, Reg|Mem, 0} },

{"dec", 1, 0x48, _, ShortForm, { WordReg, 0, 0} },
{"dec", 1, 0xfe, 1, W|Modrm, { Reg|Mem, 0, 0} },

{"sbb", 2, 0x18,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"sbb", 2, 0x83, 3,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"sbb", 2, 0x1c,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"sbb", 2, 0x80, 3,  W|Modrm, { Imm, Reg|Mem, 0} },

{"cmp", 2, 0x38,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"cmp", 2, 0x83, 7,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"cmp", 2, 0x3c,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"cmp", 2, 0x80, 7,  W|Modrm, { Imm, Reg|Mem, 0} },

{"test", 2, 0x84, _, W|Modrm, { Reg|Mem, Reg, 0} },
{"test", 2, 0x84, _, W|Modrm, { Reg, Reg|Mem, 0} },
{"test", 2, 0xa8, _, W|NoModrm, { Imm, Acc, 0} },
{"test", 2, 0xf6, 0, W|Modrm, { Imm, Reg|Mem, 0} },

{"and", 2, 0x20,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"and", 2, 0x83, 4,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"and", 2, 0x24,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"and", 2, 0x80, 4,  W|Modrm, { Imm, Reg|Mem, 0} },

{"or", 2, 0x08,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"or", 2, 0x83, 1,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"or", 2, 0x0c,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"or", 2, 0x80, 1,  W|Modrm, { Imm, Reg|Mem, 0} },

{"xor", 2, 0x30,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"xor", 2, 0x83, 6,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"xor", 2, 0x34,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"xor", 2, 0x80, 6,  W|Modrm, { Imm, Reg|Mem, 0} },

/* iclr with 1 operand is really xor with 2 operands.  */
{"clr", 1, 0x30, _, W|Modrm|iclrKludge, { Reg } },

{"adc", 2, 0x10,  _, DW|Modrm, { Reg, Reg|Mem, 0} },
{"adc", 2, 0x83, 2,  Modrm, { Imm8S, WordReg|WordMem, 0} },
{"adc", 2, 0x14,  _,  W|NoModrm, { Imm,  Acc,    0} },
{"adc", 2, 0x80, 2,  W|Modrm, { Imm, Reg|Mem, 0} },

{"neg", 1, 0xf6, 3, W|Modrm, { Reg|Mem, 0, 0} },
{"not", 1, 0xf6, 2, W|Modrm, { Reg|Mem, 0, 0} },

{"aaa", 0, 0x37, _, NoModrm, { 0, 0, 0} },
{"aas", 0, 0x3f, _, NoModrm, { 0, 0, 0} },
{"daa", 0, 0x27, _, NoModrm, { 0, 0, 0} },
{"das", 0, 0x2f, _, NoModrm, { 0, 0, 0} },
{"aad", 0, 0xd50a, _, NoModrm, { 0, 0, 0} },
{"aam", 0, 0xd40a, _, NoModrm, { 0, 0, 0} },

/* conversion insns */
/* conversion:  intel naming */
{"cbw", 0, 0x98, _, NoModrm|Data16, { 0, 0, 0} },
{"cwd", 0, 0x99, _, NoModrm|Data16, { 0, 0, 0} },
{"cwde", 0, 0x98, _, NoModrm|Data32, { 0, 0, 0} },
{"cdq", 0, 0x99, _, NoModrm|Data32, { 0, 0, 0} },
/*  att naming */
{"cbtw", 0, 0x98, _, NoModrm|Data16, { 0, 0, 0} },
{"cwtl", 0, 0x98, _, NoModrm|Data32, { 0, 0, 0} },
{"cwtd", 0, 0x99, _, NoModrm|Data16, { 0, 0, 0} },
{"cltd", 0, 0x99, _, NoModrm|Data32, { 0, 0, 0} },

/* Warning! the mul/imul (opcode 0xf6) must only have 1 operand!  They are
   expanding 64-bit multiplies, and *cannot* be selected to accomplish
   'imul %ebx, %eax' (opcode 0x0faf must be used in this case)
   These multiplies can only be selected with single operand forms. */
{"mul",  1, 0xf6, 4, W|Modrm, { Reg|Mem, 0, 0} },
{"imul", 1, 0xf6, 5, W|Modrm, { Reg|Mem, 0, 0} },




/* imulKludge here is needed to reverse the i.rm.reg & i.rm.regmem fields.
   These instructions are exceptions:  'imul $2, %eax, %ecx' would put
   '%eax' in the reg field and '%ecx' in the regmem field if we did not
   switch them. */
{"imul", 2, 0x0faf, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} },
{"imul", 3, 0x6b, _, Modrm|ReverseRegRegmem, { Imm8S, WordReg|Mem, WordReg} },
{"imul", 3, 0x69, _, Modrm|ReverseRegRegmem, { Imm16|Imm32, WordReg|Mem, WordReg} },
/*
  imul with 2 operands mimicks imul with 3 by puting register both
  in i.rm.reg & i.rm.regmem fields
*/
{"imul", 2, 0x6b, _, Modrm|imulKludge, { Imm8S, WordReg, 0} },
{"imul", 2, 0x69, _, Modrm|imulKludge, { Imm16|Imm32, WordReg, 0} },
{"div", 1, 0xf6, 6, W|Modrm, { Reg|Mem, 0, 0} },
{"div", 2, 0xf6, 6, W|Modrm, { Reg|Mem, Acc, 0} },
{"idiv", 1, 0xf6, 7, W|Modrm, { Reg|Mem, 0, 0} },
{"idiv", 2, 0xf6, 7, W|Modrm, { Reg|Mem, Acc, 0} },

{"rol", 2, 0xd0, 0, W|Modrm, { Imm1, Reg|Mem, 0} },
{"rol", 2, 0xc0, 0, W|Modrm, { Imm8, Reg|Mem, 0} },
{"rol", 2, 0xd2, 0, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"rol", 1, 0xd0, 0, W|Modrm, { Reg|Mem, 0, 0} },

{"ror", 2, 0xd0, 1, W|Modrm, { Imm1, Reg|Mem, 0} },
{"ror", 2, 0xc0, 1, W|Modrm, { Imm8, Reg|Mem, 0} },
{"ror", 2, 0xd2, 1, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"ror", 1, 0xd0, 1, W|Modrm, { Reg|Mem, 0, 0} },

{"rcl", 2, 0xd0, 2, W|Modrm, { Imm1, Reg|Mem, 0} },
{"rcl", 2, 0xc0, 2, W|Modrm, { Imm8, Reg|Mem, 0} },
{"rcl", 2, 0xd2, 2, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"rcl", 1, 0xd0, 2, W|Modrm, { Reg|Mem, 0, 0} },

{"rcr", 2, 0xd0, 3, W|Modrm, { Imm1, Reg|Mem, 0} },
{"rcr", 2, 0xc0, 3, W|Modrm, { Imm8, Reg|Mem, 0} },
{"rcr", 2, 0xd2, 3, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"rcr", 1, 0xd0, 3, W|Modrm, { Reg|Mem, 0, 0} },

{"sal", 2, 0xd0, 4, W|Modrm, { Imm1, Reg|Mem, 0} },
{"sal", 2, 0xc0, 4, W|Modrm, { Imm8, Reg|Mem, 0} },
{"sal", 2, 0xd2, 4, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"sal", 1, 0xd0, 4, W|Modrm, { Reg|Mem, 0, 0} },
{"shl", 2, 0xd0, 4, W|Modrm, { Imm1, Reg|Mem, 0} },
{"shl", 2, 0xc0, 4, W|Modrm, { Imm8, Reg|Mem, 0} },
{"shl", 2, 0xd2, 4, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"shl", 1, 0xd0, 4, W|Modrm, { Reg|Mem, 0, 0} },

{"shld", 3, 0x0fa4, _, Modrm, { Imm8, WordReg, WordReg|Mem} },
{"shld", 3, 0x0fa5, _, Modrm, { ShiftCount, WordReg, WordReg|Mem} },
{"shld", 2, 0x0fa5, _, Modrm, { WordReg, WordReg|Mem, 0} },

{"shr", 2, 0xd0, 5, W|Modrm, { Imm1, Reg|Mem, 0} },
{"shr", 2, 0xc0, 5, W|Modrm, { Imm8, Reg|Mem, 0} },
{"shr", 2, 0xd2, 5, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"shr", 1, 0xd0, 5, W|Modrm, { Reg|Mem, 0, 0} },

{"shrd", 3, 0x0fac, _, Modrm, { Imm8, WordReg, WordReg|Mem} },
{"shrd", 3, 0x0fad, _, Modrm, { ShiftCount, WordReg, WordReg|Mem} },
{"shrd", 2, 0x0fad, _, Modrm, { WordReg, WordReg|Mem, 0} },

{"sar", 2, 0xd0, 7, W|Modrm, { Imm1, Reg|Mem, 0} },
{"sar", 2, 0xc0, 7, W|Modrm, { Imm8, Reg|Mem, 0} },
{"sar", 2, 0xd2, 7, W|Modrm, { ShiftCount, Reg|Mem, 0} },
{"sar", 1, 0xd0, 7, W|Modrm, { Reg|Mem, 0, 0} },

/* control transfer instructions */
#define CALL_PC_RELATIVE 0xe8
{"call", 1, 0xe8, _, JumpDword, { Disp32, 0, 0} },
{"call", 1, 0xff, 2, Modrm|Data32, { Reg|Mem|JumpAbsolute, 0, 0} },
{"callw", 1, 0xff, 2, Modrm|Data16, { Reg|Mem|JumpAbsolute, 0, 0} },
#define CALL_FAR_IMMEDIATE 0x9a
{"lcall", 2, 0x9a, _, JumpInterSegment, { Imm16, Imm32, 0} },
{"lcall", 1, 0xff, 3, Modrm|Data32, { Mem, 0, 0} },
{"lcallw", 1, 0xff, 3, Modrm|Data16, { Mem, 0, 0} },

#define JUMP_PC_RELATIVE 0xeb
{"jmp", 1, 0xeb, _, Jump, { Disp, 0, 0} },
{"jmp", 1, 0xff, 4, Modrm, { Reg32|Mem|JumpAbsolute, 0, 0} },
#define JUMP_FAR_IMMEDIATE 0xea
{"ljmp", 2, 0xea, _, JumpInterSegment, { Imm16, Imm32, 0} },
{"ljmp", 1, 0xff, 5, Modrm|Data32, { Mem, 0, 0} },

{"ret", 0, 0xc3, _, NoModrm|Data32, { 0, 0, 0} },
{"ret", 1, 0xc2, _, NoModrm|Data32, { Imm16, 0, 0} },
{"retw", 0, 0xc3, _, NoModrm|Data16, { 0, 0, 0} },
{"retw", 1, 0xc2, _, NoModrm|Data16, { Imm16, 0, 0} },
{"lret", 0, 0xcb, _, NoModrm|Data32, { 0, 0, 0} },
{"lret", 1, 0xca, _, NoModrm|Data32, { Imm16, 0, 0} },
{"lretw", 0, 0xcb, _, NoModrm|Data16, { 0, 0, 0} },
{"lretw", 1, 0xca, _, NoModrm|Data16, { Imm16, 0, 0} },
{"enter", 2, 0xc8, _, NoModrm|Data32, { Imm16, Imm8, 0} },
{"leave", 0, 0xc9, _, NoModrm|Data32, { 0, 0, 0} },
{"enterw", 2, 0xc8, _, NoModrm|Data16, { Imm16, Imm8, 0} },
{"leavew", 0, 0xc9, _, NoModrm|Data16, { 0, 0, 0} },

/* conditional jumps */
{"jo", 1, 0x70, _, Jump, { Disp, 0, 0} },

{"jno", 1, 0x71, _, Jump, { Disp, 0, 0} },

{"jb", 1, 0x72, _, Jump, { Disp, 0, 0} },
{"jc", 1, 0x72, _, Jump, { Disp, 0, 0} },
{"jnae", 1, 0x72, _, Jump, { Disp, 0, 0} },

{"jnb", 1, 0x73, _, Jump, { Disp, 0, 0} },
{"jnc", 1, 0x73, _, Jump, { Disp, 0, 0} },
{"jae", 1, 0x73, _, Jump, { Disp, 0, 0} },

{"je", 1, 0x74, _, Jump, { Disp, 0, 0} },
{"jz", 1, 0x74, _, Jump, { Disp, 0, 0} },

{"jne", 1, 0x75, _, Jump, { Disp, 0, 0} },
{"jnz", 1, 0x75, _, Jump, { Disp, 0, 0} },

{"jbe", 1, 0x76, _, Jump, { Disp, 0, 0} },
{"jna", 1, 0x76, _, Jump, { Disp, 0, 0} },

{"jnbe", 1, 0x77, _, Jump, { Disp, 0, 0} },
{"ja", 1, 0x77, _, Jump, { Disp, 0, 0} },

{"js", 1, 0x78, _, Jump, { Disp, 0, 0} },

{"jns", 1, 0x79, _, Jump, { Disp, 0, 0} },

{"jp", 1, 0x7a, _, Jump, { Disp, 0, 0} },
{"jpe", 1, 0x7a, _, Jump, { Disp, 0, 0} },

{"jnp", 1, 0x7b, _, Jump, { Disp, 0, 0} },
{"jpo", 1, 0x7b, _, Jump, { Disp, 0, 0} },

{"jl", 1, 0x7c, _, Jump, { Disp, 0, 0} },
{"jnge", 1, 0x7c, _, Jump, { Disp, 0, 0} },

{"jnl", 1, 0x7d, _, Jump, { Disp, 0, 0} },
{"jge", 1, 0x7d, _, Jump, { Disp, 0, 0} },

{"jle", 1, 0x7e, _, Jump, { Disp, 0, 0} },
{"jng", 1, 0x7e, _, Jump, { Disp, 0, 0} },

{"jnle", 1, 0x7f, _, Jump, { Disp, 0, 0} },
{"jg", 1, 0x7f, _, Jump, { Disp, 0, 0} },

#if 0  /* XXX where are these macros used?
	  To get them working again, they need to take
	  an entire template as the parameter,
	  and check for Data16/Data32 flags.  */
/* these turn into pseudo operations when disp is larger than 8 bits */
#define IS_JUMP_ON_CX_ZERO(o) \
  (o == 0x66e3)
#define IS_JUMP_ON_ECX_ZERO(o) \
  (o == 0xe3)
#endif

{"jcxz", 1, 0xe3, _, JumpByte|Data16, { Disp, 0, 0} },
{"jecxz", 1, 0xe3, _, JumpByte|Data32, { Disp, 0, 0} },

#define IS_LOOP_ECX_TIMES(o) \
  (o == 0xe2 || o == 0xe1 || o == 0xe0)

{"loop", 1, 0xe2, _, JumpByte, { Disp, 0, 0} },

{"loopz", 1, 0xe1, _, JumpByte, { Disp, 0, 0} },
{"loope", 1, 0xe1, _, JumpByte, { Disp, 0, 0} },

{"loopnz", 1, 0xe0, _, JumpByte, { Disp, 0, 0} },
{"loopne", 1, 0xe0, _, JumpByte, { Disp, 0, 0} },

/* set byte on flag instructions */
{"seto", 1, 0x0f90, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setno", 1, 0x0f91, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setb", 1, 0x0f92, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setc", 1, 0x0f92, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setnae", 1, 0x0f92, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setnb", 1, 0x0f93, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setnc", 1, 0x0f93, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setae", 1, 0x0f93, 0, Modrm, { Reg8|Mem, 0, 0} },

{"sete", 1, 0x0f94, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setz", 1, 0x0f94, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setne", 1, 0x0f95, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setnz", 1, 0x0f95, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setbe", 1, 0x0f96, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setna", 1, 0x0f96, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setnbe", 1, 0x0f97, 0, Modrm, { Reg8|Mem, 0, 0} },
{"seta", 1, 0x0f97, 0, Modrm, { Reg8|Mem, 0, 0} },

{"sets", 1, 0x0f98, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setns", 1, 0x0f99, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setp", 1, 0x0f9a, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setpe", 1, 0x0f9a, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setnp", 1, 0x0f9b, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setpo", 1, 0x0f9b, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setl", 1, 0x0f9c, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setnge", 1, 0x0f9c, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setnl", 1, 0x0f9d, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setge", 1, 0x0f9d, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setle", 1, 0x0f9e, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setng", 1, 0x0f9e, 0, Modrm, { Reg8|Mem, 0, 0} },

{"setnle", 1, 0x0f9f, 0, Modrm, { Reg8|Mem, 0, 0} },
{"setg", 1, 0x0f9f, 0, Modrm, { Reg8|Mem, 0, 0} },

#define IS_STRING_INSTRUCTION(o) \
  ((o) == 0xa6 || (o) == 0x6c || (o) == 0x6e || (o) == 0x6e || \
   (o) == 0xac || (o) == 0xa4 || (o) == 0xae || (o) == 0xaa || \
   (o) == 0xd7)

/* string manipulation */
{"cmps", 0, 0xa6, _, W|NoModrm, { 0, 0, 0} },
{"scmp", 0, 0xa6, _, W|NoModrm, { 0, 0, 0} },
{"ins", 0, 0x6c, _, W|NoModrm, { 0, 0, 0} },
{"outs", 0, 0x6e, _, W|NoModrm, { 0, 0, 0} },
{"lods", 0, 0xac, _, W|NoModrm, { 0, 0, 0} },
{"slod", 0, 0xac, _, W|NoModrm, { 0, 0, 0} },
{"movs", 0, 0xa4, _, W|NoModrm, { 0, 0, 0} },
{"smov", 0, 0xa4, _, W|NoModrm, { 0, 0, 0} },
{"scas", 0, 0xae, _, W|NoModrm, { 0, 0, 0} },
{"ssca", 0, 0xae, _, W|NoModrm, { 0, 0, 0} },
{"stos", 0, 0xaa, _, W|NoModrm, { 0, 0, 0} },
{"ssto", 0, 0xaa, _, W|NoModrm, { 0, 0, 0} },
{"xlat", 0, 0xd7, _, NoModrm, { 0, 0, 0} },

/* bit manipulation */
{"bsf", 2, 0x0fbc, _, Modrm|ReverseRegRegmem, { Reg|Mem, Reg, 0} },
{"bsr", 2, 0x0fbd, _, Modrm|ReverseRegRegmem, { Reg|Mem, Reg, 0} },
{"bt", 2, 0x0fa3, _, Modrm, { Reg, Reg|Mem, 0} },
{"bt", 2, 0x0fba, 4, Modrm, { Imm8, Reg|Mem, 0} },
{"btc", 2, 0x0fbb, _, Modrm, { Reg, Reg|Mem, 0} },
{"btc", 2, 0x0fba, 7, Modrm, { Imm8, Reg|Mem, 0} },
{"btr", 2, 0x0fb3, _, Modrm, { Reg, Reg|Mem, 0} },
{"btr", 2, 0x0fba, 6, Modrm, { Imm8, Reg|Mem, 0} },
{"bts", 2, 0x0fab, _, Modrm, { Reg, Reg|Mem, 0} },
{"bts", 2, 0x0fba, 5, Modrm, { Imm8, Reg|Mem, 0} },

/* interrupts & op. sys insns */
/* See gas/config/tc-i386.c for conversion of 'int $3' into the special
   int 3 insn. */
#define INT_OPCODE 0xcd
#define INT3_OPCODE 0xcc
{"int", 1, 0xcd, _, NoModrm, { Imm8, 0, 0} },
{"int3", 0, 0xcc, _, NoModrm, { 0, 0, 0} },
{"into", 0, 0xce, _, NoModrm, { 0, 0, 0} },
{"iret", 0, 0xcf, _, NoModrm|Data32, { 0, 0, 0} },
{"iretw", 0, 0xcf, _, NoModrm|Data16, { 0, 0, 0} },
/* i386sl, i486sl, later 486, and Pentium */
{"rsm", 0, 0x0faa, _, NoModrm,{ 0, 0, 0} },

{"boundl", 2, 0x62, _, Modrm|Data32, { Reg32, Mem, 0} },
{"boundw", 2, 0x62, _, Modrm|Data16, { Reg16, Mem, 0} },

{"hlt", 0, 0xf4, _, NoModrm, { 0, 0, 0} },
{"wait", 0, 0x9b, _, NoModrm, { 0, 0, 0} },
/* nop is actually 'xchgl %eax, %eax' */
{"nop", 0, 0x90, _, NoModrm, { 0, 0, 0} },

/* protection control */
{"arpl", 2, 0x63, _, Modrm, { Reg16, Reg16|Mem, 0} },
{"lar", 2, 0x0f02, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} },
{"lgdt", 1, 0x0f01, 2, Modrm, { Mem, 0, 0} },
{"lidt", 1, 0x0f01, 3, Modrm, { Mem, 0, 0} },
{"lldt", 1, 0x0f00, 2, Modrm, { WordReg|Mem, 0, 0} },
{"lmsw", 1, 0x0f01, 6, Modrm, { WordReg|Mem, 0, 0} },
{"lsl", 2, 0x0f03, _, Modrm|ReverseRegRegmem, { WordReg|Mem, WordReg, 0} },
{"ltr", 1, 0x0f00, 3, Modrm, { WordReg|Mem, 0, 0} },

{"sgdt", 1, 0x0f01, 0, Modrm, { Mem, 0, 0} },
{"sidt", 1, 0x0f01, 1, Modrm, { Mem, 0, 0} },
{"sldt", 1, 0x0f00, 0, Modrm, { WordReg|Mem, 0, 0} },
{"smsw", 1, 0x0f01, 4, Modrm, { WordReg|Mem, 0, 0} },
{"str", 1, 0x0f00, 1, Modrm, { Reg16|Mem, 0, 0} },

{"verr", 1, 0x0f00, 4, Modrm, { WordReg|Mem, 0, 0} },
{"verw", 1, 0x0f00, 5, Modrm, { WordReg|Mem, 0, 0} },

/* floating point instructions */

/* load */
{"fld", 1, 0xd9c0, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"flds", 1, 0xd9, 0, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem float */
{"fldl", 1, 0xdd, 0, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem double */
{"fldl", 1, 0xd9c0, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"fild", 1, 0xdf, 0, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem word (16) */
{"fildl", 1, 0xdb, 0, Modrm, { Mem, 0, 0} },	/* %st0 <-- mem dword (32) */
{"fildq",1, 0xdf, 5, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem qword (64) */
{"fildll",1, 0xdf, 5, Modrm, { Mem, 0, 0} },	/* %st0 <-- mem qword (64) */
{"fldt", 1, 0xdb, 5, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem efloat */
{"fbld", 1, 0xdf, 4, Modrm, { Mem, 0, 0} },		/* %st0 <-- mem bcd */

/* store (no pop) */
{"fst", 1, 0xddd0, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"fsts", 1, 0xd9, 2, Modrm, { Mem, 0, 0} },		/* %st0 --> mem float */
{"fstl", 1, 0xdd, 2, Modrm, { Mem, 0, 0} },		/* %st0 --> mem double */
{"fstl", 1, 0xddd0, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"fist", 1, 0xdf, 2, Modrm, { Mem, 0, 0} },		/* %st0 --> mem word (16) */
{"fistl", 1, 0xdb, 2, Modrm, { Mem, 0, 0} },	/* %st0 --> mem dword (32) */

/* store (with pop) */
{"fstp", 1, 0xddd8, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"fstps", 1, 0xd9, 3, Modrm, { Mem, 0, 0} },	/* %st0 --> mem float */
{"fstpl", 1, 0xdd, 3, Modrm, { Mem, 0, 0} },	/* %st0 --> mem double */
{"fstpl", 1, 0xddd8, _, ShortForm, { FloatReg, 0, 0} }, /* register */
{"fistp", 1, 0xdf, 3, Modrm, { Mem, 0, 0} },	/* %st0 --> mem word (16) */
{"fistpl",1, 0xdb, 3, Modrm, { Mem, 0, 0} },	/* %st0 --> mem dword (32) */
{"fistpq",1, 0xdf, 7, Modrm, { Mem, 0, 0} },	/* %st0 --> mem qword (64) */
{"fistpll",1,0xdf, 7, Modrm, { Mem, 0, 0} },	/* %st0 --> mem qword (64) */
{"fstpt", 1, 0xdb, 7, Modrm, { Mem, 0, 0} },	/* %st0 --> mem efloat */
{"fbstp", 1, 0xdf, 6, Modrm, { Mem, 0, 0} },	/* %st0 --> mem bcd */

/* exchange %st<n> with %st0 */
{"fxch", 1, 0xd9c8, _, ShortForm, { FloatReg, 0, 0} },
{"fxch", 0, 0xd9c9, _, NoModrm, { 0, 0, 0} }, /* alias for fxch %st, %st(1) */

/* comparison (without pop) */
{"fcom", 1, 0xd8d0, _, ShortForm, { FloatReg, 0, 0} },
{"fcoms", 1, 0xd8, 2, Modrm, { Mem, 0, 0} },	/* compare %st0, mem float  */
{"ficoml", 1, 0xda, 2, Modrm, { Mem, 0, 0} },	/* compare %st0, mem word  */
{"fcoml", 1, 0xdc, 2, Modrm, { Mem, 0, 0} },	/* compare %st0, mem double  */
{"fcoml", 1, 0xd8d0, _, ShortForm, { FloatReg, 0, 0} },
{"ficoms", 1, 0xde, 2, Modrm, { Mem, 0, 0} },	/* compare %st0, mem dword */

/* comparison (with pop) */
{"fcomp", 1, 0xd8d8, _, ShortForm, { FloatReg, 0, 0} },
{"fcomps", 1, 0xd8, 3, Modrm, { Mem, 0, 0} },	/* compare %st0, mem float  */
{"ficompl", 1, 0xda, 3, Modrm, { Mem, 0, 0} },	/* compare %st0, mem word  */
{"fcompl", 1, 0xdc, 3, Modrm, { Mem, 0, 0} },	/* compare %st0, mem double  */
{"fcompl", 1, 0xd8d8, _, ShortForm, { FloatReg, 0, 0} },
{"ficomps", 1, 0xde, 3, Modrm, { Mem, 0, 0} },	/* compare %st0, mem dword */
{"fcompp", 0, 0xded9, _, NoModrm, { 0, 0, 0} },	/* compare %st0, %st1 & pop 2 */

/* unordered comparison (with pop) */
{"fucom", 1, 0xdde0, _, ShortForm, { FloatReg, 0, 0} },
{"fucomp", 1, 0xdde8, _, ShortForm, { FloatReg, 0, 0} },
{"fucompp", 0, 0xdae9, _, NoModrm, { 0, 0, 0} }, /* ucompare %st0, %st1 & pop twice */

{"ftst", 0, 0xd9e4, _, NoModrm, { 0, 0, 0} },	/* test %st0 */
{"fxam", 0, 0xd9e5, _, NoModrm, { 0, 0, 0} },	/* examine %st0 */

/* load constants into %st0 */
{"fld1", 0, 0xd9e8, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- 1.0 */
{"fldl2t", 0, 0xd9e9, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- log2(10) */
{"fldl2e", 0, 0xd9ea, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- log2(e) */
{"fldpi", 0, 0xd9eb, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- pi */
{"fldlg2", 0, 0xd9ec, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- log10(2) */
{"fldln2", 0, 0xd9ed, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- ln(2) */
{"fldz", 0, 0xd9ee, _, NoModrm, { 0, 0, 0} },	/* %st0 <-- 0.0 */

/* arithmetic */

/* add */
{"fadd", 1, 0xd8c0, _, ShortForm, { FloatReg, 0, 0} },
{"fadd", 2, 0xd8c0, _, ShortForm|FloatD, { FloatReg, FloatAcc, 0} },
{"fadd", 0, 0xdcc1, _, NoModrm, { 0, 0, 0} }, /* alias for fadd %st, %st(1) */
{"faddp", 1, 0xdec0, _, ShortForm, { FloatReg, 0, 0} },
{"faddp", 2, 0xdec0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"faddp", 2, 0xdec0, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"faddp", 0, 0xdec1, _, NoModrm, { 0, 0, 0} }, /* alias for faddp %st, %st(1) */
{"fadds", 1, 0xd8, 0, Modrm, { Mem, 0, 0} },
{"fiaddl", 1, 0xda, 0, Modrm, { Mem, 0, 0} },
{"faddl", 1, 0xdc, 0, Modrm, { Mem, 0, 0} },
{"fiadds", 1, 0xde, 0, Modrm, { Mem, 0, 0} },

/* sub */
/* Note:  intel has decided that certain of these operations are reversed
   in assembler syntax. */
{"fsub", 1, 0xd8e0, _, ShortForm, { FloatReg, 0, 0} },
{"fsub", 2, 0xd8e0, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fsub", 2, 0xdce8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsub", 2, 0xdce0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsub", 0, 0xdce1, _, NoModrm, { 0, 0, 0} },
{"fsubp", 1, 0xdee8, _, ShortForm, { FloatReg, 0, 0} },
{"fsubp", 2, 0xdee8, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fsubp", 2, 0xdee8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsubp", 2, 0xdee0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsubp", 0, 0xdee9, _, NoModrm, { 0, 0, 0} },
{"fsubs", 1, 0xd8, 4, Modrm, { Mem, 0, 0} },
{"fisubl", 1, 0xda, 4, Modrm, { Mem, 0, 0} },
{"fsubl", 1, 0xdc, 4, Modrm, { Mem, 0, 0} },
{"fisubs", 1, 0xde, 4, Modrm, { Mem, 0, 0} },

/* sub reverse */
{"fsubr", 1, 0xd8e8, _, ShortForm, { FloatReg, 0, 0} },
{"fsubr", 2, 0xd8e8, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fsubr", 2, 0xdce0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsubr", 2, 0xdce8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsubr", 0, 0xdce9, _, NoModrm, { 0, 0, 0} },
{"fsubrp", 1, 0xdee0, _, ShortForm, { FloatReg, 0, 0} },
{"fsubrp", 2, 0xdee0, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fsubrp", 2, 0xdee0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fsubrp", 2, 0xdee8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fsubrp", 0, 0xdee1, _, NoModrm, { 0, 0, 0} },
{"fsubrs", 1, 0xd8, 5, Modrm, { Mem, 0, 0} },
{"fisubrl", 1, 0xda, 5, Modrm, { Mem, 0, 0} },
{"fsubrl", 1, 0xdc, 5, Modrm, { Mem, 0, 0} },
{"fisubrs", 1, 0xde, 5, Modrm, { Mem, 0, 0} },

/* mul */
{"fmul", 1, 0xd8c8, _, ShortForm, { FloatReg, 0, 0} },
{"fmul", 2, 0xd8c8, _, ShortForm|FloatD, { FloatReg, FloatAcc, 0} },
{"fmul", 0, 0xdcc9, _, NoModrm, { 0, 0, 0} },
{"fmulp", 1, 0xdec8, _, ShortForm, { FloatReg, 0, 0} },
{"fmulp", 2, 0xdec8, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fmulp", 2, 0xdec8, _, ShortForm, { FloatAcc, FloatReg, 0} },
{"fmulp", 0, 0xdec9, _, NoModrm, { 0, 0, 0} },
{"fmuls", 1, 0xd8, 1, Modrm, { Mem, 0, 0} },
{"fimull", 1, 0xda, 1, Modrm, { Mem, 0, 0} },
{"fmull", 1, 0xdc, 1, Modrm, { Mem, 0, 0} },
{"fimuls", 1, 0xde, 1, Modrm, { Mem, 0, 0} },

/* div */
/* Note:  intel has decided that certain of these operations are reversed
   in assembler syntax. */
{"fdiv", 1, 0xd8f0, _, ShortForm, { FloatReg, 0, 0} },
{"fdiv", 2, 0xd8f0, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fdiv", 2, 0xdcf8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdiv", 2, 0xdcf0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdiv", 0, 0xdcf1, _, NoModrm, { 0, 0, 0} },
{"fdivp", 1, 0xdef8, _, ShortForm, { FloatReg, 0, 0} },
{"fdivp", 2, 0xdef8, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fdivp", 2, 0xdef8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdivp", 2, 0xdef0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdivp", 0, 0xdef9, _, NoModrm, { 0, 0, 0} },
{"fdivs", 1, 0xd8, 6, Modrm, { Mem, 0, 0} },
{"fidivl", 1, 0xda, 6, Modrm, { Mem, 0, 0} },
{"fdivl", 1, 0xdc, 6, Modrm, { Mem, 0, 0} },
{"fidivs", 1, 0xde, 6, Modrm, { Mem, 0, 0} },

/* div reverse */
{"fdivr", 1, 0xd8f8, _, ShortForm, { FloatReg, 0, 0} },
{"fdivr", 2, 0xd8f8, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fdivr", 2, 0xdcf0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdivr", 2, 0xdcf8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdivr", 0, 0xdcf9, _, NoModrm, { 0, 0, 0} },
{"fdivrp", 1, 0xdef0, _, ShortForm, { FloatReg, 0, 0} },
{"fdivrp", 2, 0xdef0, _, ShortForm, { FloatReg, FloatAcc, 0} },
#ifdef NON_BROKEN_OPCODES
{"fdivrp", 2, 0xdef0, _, ShortForm, { FloatAcc, FloatReg, 0} },
#else
{"fdivrp", 2, 0xdef8, _, ShortForm, { FloatAcc, FloatReg, 0} },
#endif
{"fdivrp", 0, 0xdef1, _, NoModrm, { 0, 0, 0} },
{"fdivrs", 1, 0xd8, 7, Modrm, { Mem, 0, 0} },
{"fidivrl", 1, 0xda, 7, Modrm, { Mem, 0, 0} },
{"fdivrl", 1, 0xdc, 7, Modrm, { Mem, 0, 0} },
{"fidivrs", 1, 0xde, 7, Modrm, { Mem, 0, 0} },

{"f2xm1", 0,   0xd9f0, _, NoModrm, { 0, 0, 0} },
{"fyl2x", 0,   0xd9f1, _, NoModrm, { 0, 0, 0} },
{"fptan", 0,   0xd9f2, _, NoModrm, { 0, 0, 0} },
{"fpatan", 0,  0xd9f3, _, NoModrm, { 0, 0, 0} },
{"fxtract", 0, 0xd9f4, _, NoModrm, { 0, 0, 0} },
{"fprem1", 0,  0xd9f5, _, NoModrm, { 0, 0, 0} },
{"fdecstp", 0,  0xd9f6, _, NoModrm, { 0, 0, 0} },
{"fincstp", 0,  0xd9f7, _, NoModrm, { 0, 0, 0} },
{"fprem", 0,   0xd9f8, _, NoModrm, { 0, 0, 0} },
{"fyl2xp1", 0, 0xd9f9, _, NoModrm, { 0, 0, 0} },
{"fsqrt", 0,   0xd9fa, _, NoModrm, { 0, 0, 0} },
{"fsincos", 0, 0xd9fb, _, NoModrm, { 0, 0, 0} },
{"frndint", 0, 0xd9fc, _, NoModrm, { 0, 0, 0} },
{"fscale", 0,  0xd9fd, _, NoModrm, { 0, 0, 0} },
{"fsin", 0,    0xd9fe, _, NoModrm, { 0, 0, 0} },
{"fcos", 0,    0xd9ff, _, NoModrm, { 0, 0, 0} },

{"fchs", 0, 0xd9e0, _, NoModrm, { 0, 0, 0} },
{"fabs", 0, 0xd9e1, _, NoModrm, { 0, 0, 0} },

/* processor control */
{"fninit", 0, 0xdbe3, _, NoModrm, { 0, 0, 0} },
{"finit", 0, 0x9bdbe3, _, NoModrm, { 0, 0, 0} },
{"fldcw", 1, 0xd9, 5, Modrm, { Mem, 0, 0} },
{"fnstcw", 1, 0xd9, 7, Modrm, { Mem, 0, 0} },
{"fstcw", 1, 0x9bd9, 7, Modrm, { Mem, 0, 0} },
{"fnstsw", 1, 0xdfe0, _, NoModrm, { Acc, 0, 0} },
{"fnstsw", 1, 0xdd, 7, Modrm, { Mem, 0, 0} },
{"fnstsw", 0, 0xdfe0, _, NoModrm, { 0, 0, 0} },
{"fstsw", 1, 0x9bdfe0, _, NoModrm, { Acc, 0, 0} },
{"fstsw", 1, 0x9bdd, 7, Modrm, { Mem, 0, 0} },
{"fstsw", 0, 0x9bdfe0, _, NoModrm, { 0, 0, 0} },
{"fnclex", 0, 0xdbe2, _, NoModrm, { 0, 0, 0} },
{"fclex", 0, 0x9bdbe2, _, NoModrm, { 0, 0, 0} },
/*
 We ignore the short format (287) versions of fstenv/fldenv & fsave/frstor
 instructions;  i'm not sure how to add them or how they are different.
 My 386/387 book offers no details about this.
*/
{"fnstenv", 1, 0xd9, 6, Modrm, { Mem, 0, 0} },
{"fstenv", 1, 0x9bd9, 6, Modrm, { Mem, 0, 0} },
{"fldenv", 1, 0xd9, 4, Modrm, { Mem, 0, 0} },
{"fnsave", 1, 0xdd, 6, Modrm, { Mem, 0, 0} },
{"fsave", 1, 0x9bdd, 6, Modrm, { Mem, 0, 0} },
{"frstor", 1, 0xdd, 4, Modrm, { Mem, 0, 0} },

{"ffree", 1, 0xddc0, _, ShortForm, { FloatReg, 0, 0} },
/* P6:free st(i), pop st */
{"ffreep", 1, 0xdfc0, _, ShortForm, { FloatReg, 0, 0} },
{"fnop", 0, 0xd9d0, _, NoModrm, { 0, 0, 0} },
{"fwait", 0, 0x9b, _, NoModrm, { 0, 0, 0} },

/*
  opcode prefixes; we allow them as seperate insns too
  (see prefix table below)
*/
{"aword", 0, 0x67, _, NoModrm, { 0, 0, 0} },
{"addr16", 0, 0x67, _, NoModrm, { 0, 0, 0} },
{"word", 0, 0x66, _, NoModrm, { 0, 0, 0} },
{"data16", 0, 0x66, _, NoModrm, { 0, 0, 0} },
{"lock", 0, 0xf0, _, NoModrm, { 0, 0, 0} },
{"cs", 0, 0x2e, _, NoModrm, { 0, 0, 0} },
{"ds", 0, 0x3e, _, NoModrm, { 0, 0, 0} },
{"es", 0, 0x26, _, NoModrm, { 0, 0, 0} },
{"fs", 0, 0x64, _, NoModrm, { 0, 0, 0} },
{"gs", 0, 0x65, _, NoModrm, { 0, 0, 0} },
{"ss", 0, 0x36, _, NoModrm, { 0, 0, 0} },
{"rep", 0, 0xf3, _, NoModrm, { 0, 0, 0} },
{"repe", 0, 0xf3, _, NoModrm, { 0, 0, 0} },
{"repz", 0, 0xf3, _, NoModrm, { 0, 0, 0} },
{"repne", 0, 0xf2, _, NoModrm, { 0, 0, 0} },
{"repnz", 0, 0xf2, _, NoModrm, { 0, 0, 0} },

/* 486 extensions */

{"bswap", 1, 0x0fc8, _, ShortForm, { Reg32,0,0 } },
{"xadd", 2, 0x0fc0, _, W|Modrm, { Reg, Reg|Mem, 0 } },
{"cmpxchg", 2, 0x0fb0, _, W|Modrm, { Reg, Reg|Mem, 0 } },
{"invd", 0, 0x0f08, _, NoModrm, { 0, 0, 0} },
{"wbinvd", 0, 0x0f09, _, NoModrm, { 0, 0, 0} },
{"invlpg", 1, 0x0f01, 7, Modrm, { Mem, 0, 0} },

/* 586 and late 486 extensions */
{"cpuid", 0, 0x0fa2, _, NoModrm, { 0, 0, 0} },

/* Pentium extensions */
{"wrmsr", 0, 0x0f30, _, NoModrm, { 0, 0, 0} },
{"rdtsc", 0, 0x0f31, _, NoModrm, { 0, 0, 0} },
{"rdmsr", 0, 0x0f32, _, NoModrm, { 0, 0, 0} },
{"cmpxchg8b", 1, 0x0fc7, 1, Modrm, { Mem, 0, 0} },

/* Pentium Pro extensions */
{"rdpmc", 0, 0x0f33, _, NoModrm, { 0, 0, 0} },

{"cmovo",  2, 0x0f40, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovno", 2, 0x0f41, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovb",  2, 0x0f42, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovae", 2, 0x0f43, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmove",  2, 0x0f44, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovne", 2, 0x0f45, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovbe", 2, 0x0f46, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmova",  2, 0x0f47, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovs",  2, 0x0f48, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovns", 2, 0x0f49, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovp",  2, 0x0f4a, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovnp", 2, 0x0f4b, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovl",  2, 0x0f4c, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovge", 2, 0x0f4d, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovle", 2, 0x0f4e, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },
{"cmovg",  2, 0x0f4f, _, W|Modrm|ReverseRegRegmem, { WordReg|WordMem, WordReg, 0} },

{"fcmovb", 2, 0xdac0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmove", 2, 0xdac8, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovbe",2, 0xdad0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovu", 2, 0xdad8, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovnb", 2, 0xdbc0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovne", 2, 0xdbc8, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovnbe",2, 0xdbd0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcmovnu", 2, 0xdbd8, _, ShortForm, { FloatReg, FloatAcc, 0} },

{"fcomi",  2, 0xdbf0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fucomi", 2, 0xdbe8, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fcomip", 2, 0xdff0, _, ShortForm, { FloatReg, FloatAcc, 0} },
{"fucomip",2, 0xdfe8, _, ShortForm, { FloatReg, FloatAcc, 0} },

{"", 0, 0, 0, 0, { 0, 0, 0} }	/* sentinel */
};
#undef _

static const template *const i386_optab_end
  = i386_optab + sizeof (i386_optab)/sizeof(i386_optab[0]);

/* 386 register table */

static const reg_entry i386_regtab[] = {
  /* 8 bit regs */
  {"al", Reg8|Acc, 0}, {"cl", Reg8|ShiftCount, 1}, {"dl", Reg8, 2},
  {"bl", Reg8, 3},
  {"ah", Reg8, 4}, {"ch", Reg8, 5}, {"dh", Reg8, 6}, {"bh", Reg8, 7},
  /* 16 bit regs */
  {"ax", Reg16|Acc, 0}, {"cx", Reg16, 1}, {"dx", Reg16|InOutPortReg, 2}, {"bx", Reg16, 3},
  {"sp", Reg16, 4}, {"bp", Reg16, 5}, {"si", Reg16, 6}, {"di", Reg16, 7},
  /* 32 bit regs */
  {"eax", Reg32|Acc, 0}, {"ecx", Reg32, 1}, {"edx", Reg32, 2}, {"ebx", Reg32, 3},
  {"esp", Reg32, 4}, {"ebp", Reg32, 5}, {"esi", Reg32, 6}, {"edi", Reg32, 7},
  /* segment registers */
  {"es", SReg2, 0}, {"cs", SReg2, 1}, {"ss", SReg2, 2},
  {"ds", SReg2, 3}, {"fs", SReg3, 4}, {"gs", SReg3, 5},
  /* control registers */
  {"cr0", Control, 0},   {"cr2", Control, 2},   {"cr3", Control, 3},
  {"cr4", Control, 4},
  /* debug registers */
  {"db0", Debug, 0},   {"db1", Debug, 1},   {"db2", Debug, 2},
  {"db3", Debug, 3},   {"db6", Debug, 6},   {"db7", Debug, 7},
  {"dr0", Debug, 0},   {"dr1", Debug, 1},   {"dr2", Debug, 2},
  {"dr3", Debug, 3},   {"dr6", Debug, 6},   {"dr7", Debug, 7},
  /* test registers */
  {"tr3", Test, 3}, {"tr4", Test, 4}, {"tr5", Test, 5},
  {"tr6", Test, 6}, {"tr7", Test, 7},
  /* float registers */
  {"st(0)", FloatReg|FloatAcc, 0},
  {"st", FloatReg|FloatAcc, 0},
  {"st(1)", FloatReg, 1}, {"st(2)", FloatReg, 2},
  {"st(3)", FloatReg, 3}, {"st(4)", FloatReg, 4}, {"st(5)", FloatReg, 5},
  {"st(6)", FloatReg, 6}, {"st(7)", FloatReg, 7}
};

#define MAX_REG_NAME_SIZE 8	/* for parsing register names from input */

static const reg_entry *const i386_regtab_end
  = i386_regtab + sizeof(i386_regtab)/sizeof(i386_regtab[0]);

/* segment stuff */
static const seg_entry cs = { "cs", 0x2e };
static const seg_entry ds = { "ds", 0x3e };
static const seg_entry ss = { "ss", 0x36 };
static const seg_entry es = { "es", 0x26 };
static const seg_entry fs = { "fs", 0x64 };
static const seg_entry gs = { "gs", 0x65 };
static const seg_entry null = { "", 0x0 };

/*
  This table is used to store the default segment register implied by all
  possible memory addressing modes.
  It is indexed by the mode & modrm entries of the modrm byte as follows:
      index = (mode<<3) | modrm;
*/
static const seg_entry *const one_byte_segment_defaults[] = {
  /* mode 0 */
  &ds, &ds, &ds, &ds, &null, &ds, &ds, &ds,
  /* mode 1 */
  &ds, &ds, &ds, &ds, &null, &ss, &ds, &ds,
  /* mode 2 */
  &ds, &ds, &ds, &ds, &null, &ss, &ds, &ds,
  /* mode 3 --- not a memory reference; never referenced */
};

static const seg_entry *const two_byte_segment_defaults[] = {
  /* mode 0 */
  &ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds,
  /* mode 1 */
  &ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds,
  /* mode 2 */
  &ds, &ds, &ds, &ds, &ss, &ds, &ds, &ds,
  /* mode 3 --- not a memory reference; never referenced */
};

static const prefix_entry i386_prefixtab[] = {
#define ADDR_PREFIX_OPCODE 0x67
  { "addr16", 0x67 },		/* address size prefix ==> 16bit addressing
				 * (How is this useful?) */
#define WORD_PREFIX_OPCODE 0x66
  { "data16", 0x66 },		/* operand size prefix */
  { "lock", 0xf0 },		/* bus lock prefix */
  { "wait", 0x9b },		/* wait for coprocessor */
  { "cs", 0x2e }, { "ds", 0x3e }, /* segment overrides ... */
  { "es", 0x26 }, { "fs", 0x64 },
  { "gs", 0x65 }, { "ss", 0x36 },
/* REPE & REPNE used to detect rep/repne with a non-string instruction */
#define REPNE 0xf2
#define REPE  0xf3
  { "rep", 0xf3 }, 		/* repeat string instructions */
  { "repe", 0xf3 },  { "repz", 0xf3 },
  { "repne", 0xf2 }, { "repnz", 0xf2 }
};

static const prefix_entry *const i386_prefixtab_end
  = i386_prefixtab + sizeof(i386_prefixtab)/sizeof(i386_prefixtab[0]);

/* end of i386-opcode.h */