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35ba288998
freebsd-dev/gnu/usr.bin/as/config/i386-opcode.h
Rodney W. Grimes 35ba288998 >From: "J.T. Conklin" <jtc@sun-lamp.cs.berkeley.edu> 
Date: Fri, 24 Sep 1993 10:19:20 -0700

Fixed bug that was reported (with patch) on gnu.utils.bug.
Immediate operands of the pushw instruction were being output as 32
bits, rather than the 16 bits they were supposed to be.
1993-09-24 17:51:10 +00:00

807 lines
30 KiB
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/*-
* This code is derived from software copyrighted by the Free Software
* Foundation.
*
* Modified 1991 by Donn Seeley at UUNET Technologies, Inc.
*
* @(#)i386-opcode.h 6.3 (Berkeley) 5/8/91
*/
/* i386-opcode.h -- Intel 80386 opcode table
Copyright (C) 1989, Free Software Foundation.
This file is part of GAS, the GNU Assembler.
GAS 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 1, or (at your option)
any later version.
GAS 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 GAS; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
template i386_optab[] = {
#define _ None
/* move instructions */
{ "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|Mem16, 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, Reg8|Mem, Reg32, 0},
{"movsbw", 2, 0x660fbe, _, ReverseRegRegmem|Modrm, 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 },
{"out", 2, 0xe6, _, W|NoModrm, Acc, Imm8, 0 },
{"out", 2, 0xee, _, W|NoModrm, Acc, InOutPortReg, 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},
{"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},
{"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, 0x6698, _, NoModrm, 0, 0, 0},
{"cwd", 0, 0x6699, _, NoModrm, 0, 0, 0},
{"cwde", 0, 0x98, _, NoModrm, 0, 0, 0},
{"cdq", 0, 0x99, _, NoModrm, 0, 0, 0},
/* att naming */
{"cbtw", 0, 0x6698, _, NoModrm, 0, 0, 0},
{"cwtl", 0, 0x98, _, NoModrm, 0, 0, 0},
{"cwtd", 0, 0x6699, _, NoModrm, 0, 0, 0},
{"cltd", 0, 0x99, _, NoModrm, 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 opearnd 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},
{"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},
{"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, Reg|Mem|JumpAbsolute, 0, 0},
#define CALL_FAR_IMMEDIATE 0x9a
{"lcall", 2, 0x9a, _, JumpInterSegment, Imm16, Imm32, 0},
{"lcall", 1, 0xff, 3, Modrm, 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, Mem, 0, 0},
{"ret", 0, 0xc3, _, NoModrm, 0, 0, 0},
{"ret", 1, 0xc2, _, NoModrm, Imm16, 0, 0},
{"lret", 0, 0xcb, _, NoModrm, 0, 0, 0},
{"lret", 1, 0xca, _, NoModrm, Imm16, 0, 0},
{"enter", 2, 0xc8, _, NoModrm, Imm16, Imm8, 0},
{"leave", 0, 0xc9, _, NoModrm, 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},
/* these turn into pseudo operations when disp is larger than 8 bits */
#define IS_JUMP_ON_CX_ZERO(o) \
(o == 0x67e3)
#define IS_JUMP_ON_ECX_ZERO(o) \
(o == 0xe3)
{"jcxz", 1, 0x67e3, _, JumpByte, Disp, 0, 0},
{"jecxz", 1, 0xe3, _, JumpByte, 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},
{"setnae", 1, 0x0f92, 0, Modrm, Reg8|Mem, 0, 0},
{"setnb", 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},
{"ins", 0, 0x6c, _, W|NoModrm, 0, 0, 0},
{"outs", 0, 0x6e, _, W|NoModrm, 0, 0, 0},
{"lods", 0, 0xac, _, W|NoModrm, 0, 0, 0},
{"movs", 0, 0xa4, _, W|NoModrm, 0, 0, 0},
{"scas", 0, 0xae, _, W|NoModrm, 0, 0, 0},
{"stos", 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 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, 0, 0, 0},
{"boundl", 2, 0x62, _, Modrm, Reg32, Mem, 0},
{"boundw", 2, 0x6662, _, Modrm, 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 */
{"fildl", 1, 0xdb, 0, Modrm, Mem, 0, 0}, /* %st0 <-- mem word */
{"fldl", 1, 0xdd, 0, Modrm, Mem, 0, 0}, /* %st0 <-- mem double */
{"fldl", 1, 0xd9c0, _, ShortForm, FloatReg, 0, 0}, /* register */
{"filds", 1, 0xdf, 0, Modrm, Mem, 0, 0}, /* %st0 <-- mem dword */
{"fildq", 1, 0xdf, 5, Modrm, Mem, 0, 0}, /* %st0 <-- mem qword */
{"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 */
{"fistl", 1, 0xdb, 2, Modrm, Mem, 0, 0}, /* %st0 --> mem dword */
{"fstl", 1, 0xdd, 2, Modrm, Mem, 0, 0}, /* %st0 --> mem double */
{"fstl", 1, 0xddd0, _, ShortForm, FloatReg, 0, 0}, /* register */
{"fists", 1, 0xdf, 2, Modrm, Mem, 0, 0}, /* %st0 --> mem word */
/* store (with pop) */
{"fstp", 1, 0xddd8, _, ShortForm, FloatReg, 0, 0}, /* register */
{"fstps", 1, 0xd9, 3, Modrm, Mem, 0, 0}, /* %st0 --> mem float */
{"fistpl", 1, 0xdb, 3, Modrm, Mem, 0, 0}, /* %st0 --> mem word */
{"fstpl", 1, 0xdd, 3, Modrm, Mem, 0, 0}, /* %st0 --> mem double */
{"fstpl", 1, 0xddd8, _, ShortForm, FloatReg, 0, 0}, /* register */
{"fistps", 1, 0xdf, 3, Modrm, Mem, 0, 0}, /* %st0 --> mem dword */
{"fistpq", 1, 0xdf, 7, Modrm, Mem, 0, 0}, /* %st0 --> mem qword */
{"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},
/* 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 twice */
/* 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, 0xdac0, _, ShortForm, FloatReg, 0, 0},
{"faddp", 2, 0xdac0, _, ShortForm|FloatD, FloatReg, FloatAcc, 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, 0xdae0, _, ShortForm, FloatReg, 0, 0},
{"fsubp", 2, 0xdae0, _, 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, 0xdee1, _, 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, 0xdae8, _, ShortForm, FloatReg, 0, 0},
{"fsubrp", 2, 0xdae8, _, 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, 0xdee9, _, 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, 0xdac8, _, ShortForm, FloatReg, 0, 0},
{"fmulp", 2, 0xdac8, _, ShortForm|FloatD, FloatReg, FloatAcc, 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, 0xdaf0, _, ShortForm, FloatReg, 0, 0},
{"fdivp", 2, 0xdaf0, _, 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, 0xdef1, _, 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, 0xdaf8, _, ShortForm, FloatReg, 0, 0},
{"fdivrp", 2, 0xdaf8, _, 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, 0xdef9, _, 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, 0xdbe3, _, NoModrm, 0, 0, 0},
{"fldcw", 1, 0xd9, 5, Modrm, Mem, 0, 0},
{"fnstcw", 1, 0xd9, 7, Modrm, Mem, 0, 0},
{"fstcw", 1, 0xd9, 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, 0xdfe0, _, NoModrm, Acc, 0, 0},
{"fstsw", 1, 0xdd, 7, Modrm, Mem, 0, 0},
{"fstsw", 0, 0xdfe0, _, NoModrm, 0, 0, 0},
{"fnclex", 0, 0xdbe2, _, NoModrm, 0, 0, 0},
{"fclex", 0, 0xdbe2, _, 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, 0xd9, 6, Modrm, Mem, 0, 0},
{"fldenv", 1, 0xd9, 4, Modrm, Mem, 0, 0},
{"fnsave", 1, 0xdd, 6, Modrm, Mem, 0, 0},
{"fsave", 1, 0xdd, 6, Modrm, Mem, 0, 0},
{"frstor", 1, 0xdd, 4, Modrm, Mem, 0, 0},
{"ffree", 1, 0xddc0, _, 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},
{"word", 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},
{ "repne", 0, 0xf2, _, NoModrm, 0, 0, 0},
{"", 0, 0, 0, 0, 0, 0, 0} /* sentinal */
};
#undef _
template *i386_optab_end
= i386_optab + sizeof (i386_optab)/sizeof(i386_optab[0]);
/* 386 register table */
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},
/* debug registers */
{"db0", Debug, 0}, {"db1", Debug, 1}, {"db2", Debug, 2},
{"db3", Debug, 3}, {"db6", Debug, 6}, {"db7", Debug, 7},
/* test registers */
{"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 */
reg_entry *i386_regtab_end
= i386_regtab + sizeof(i386_regtab)/sizeof(i386_regtab[0]);
/* segment stuff */
seg_entry cs = { "cs", 0x2e };
seg_entry ds = { "ds", 0x3e };
seg_entry ss = { "ss", 0x36 };
seg_entry es = { "es", 0x26 };
seg_entry fs = { "fs", 0x64 };
seg_entry gs = { "gs", 0x65 };
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;
*/
seg_entry *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 */
};
seg_entry *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 */
};
prefix_entry i386_prefixtab[] = {
{ "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 }, { "repe", 0xf3 }, /* repeat string instructions */
{ "repne", 0xf2 }
};
prefix_entry *i386_prefixtab_end
= i386_prefixtab + sizeof(i386_prefixtab)/sizeof(i386_prefixtab[0]);
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