assyntax.h   [plain text]

#ifndef __ASSYNTAX_H__
#define	__ASSYNTAX_H__

/*
 * Copyright 1992 Vrije Universiteit, The Netherlands
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the Vrije Universiteit not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  The Vrije Universiteit makes no
 * representations about the suitability of this software for any purpose.
 * It is provided "as is" without express or implied warranty.
 *
 * The Vrije Universiteit DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL The Vrije Universiteit BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */
/*
 * Copyright (c) 1993-1999 by The XFree86 Project, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */

/* $XConsortium: assyntax.h /main/5 1996/02/21 17:50:49 kaleb $ */

 /*
 * assyntax.h
 *
 * Select the syntax appropriate to the 386 assembler being used
 * To add support for more assemblers add more columns to the CHOICE
 * macro.  Note that register names must also have uppercase names
 * to avoid macro recursion. e.g., #define ah %ah recurses!
 *
 * NB 1.  Some of the macros for certain assemblers imply that the code is to
 *	  run in protected mode!!  Caveat emptor.
 *
 * NB 2.  486 specific instructions are not included.  This is to discourage
 *	  their accidental use in code that is intended to run on 386 and 486
 *	  systems.
 *
 * Supported assemblers:
 *
 * (a) AT&T SysVr4 as(1):	default
 * (b) GNU Assembler gas:	define USE_GAS or GNU_ASSEMBLER
 * (c) Amsterdam Compiler kit:	define ACK_ASSEMBLER
 *
 * The following naming conventions have been used to identify the various
 * data types:
 *		_SR = segment register version
 *	Integer:
 *		_Q = quadword	= 64 bits
 *		_L = long	= 32 bits
 *		_W = short	= 16 bits
 *		_B = byte	=  8 bits
 *	Floating-point:
 *		_X = m80real	= 80 bits
 *		_D = double	= 64 bits
 *		_S = single	= 32 bits
 *
 * Author: Gregory J. Sharp, Sept 1992
 *         Vrije Universiteit, Amsterdam, The Netherlands
 */

#if defined(USE_GAS) && !defined(GNU_ASSEMBLER)
#define GNU_ASSEMBLER
#endif

#if (defined(__STDC__) && !defined(UNIXCPP)) || (defined (sun) && defined (i386) && defined (SVR4) && defined (__STDC__) && !defined (__GNUC__)) 
#define	CONCAT(x, y)	x ## y
#else
#define	CONCAT(x, y)	x/**/y
#endif

#ifdef ACK_ASSEMBLER

/* Assume we write code for 32-bit protected mode! */

/* Redefine register names for GAS & AT&T assemblers */
#define	AL	al
#define	AH	ah
#define	AX	ax
#define	EAX	ax
#define	BL	bl
#define	BH	bh
#define	BX	bx
#define	EBX	bx
#define	CL	cl
#define	CH	ch
#define	CX	cx
#define	ECX	cx
#define	DL	dl
#define	DH	dh
#define	DX	dx
#define	EDX	dx
#define	BP	bp
#define	EBP	bp
#define	SI	si
#define	ESI	si
#define	DI	di
#define	EDI	di
#define	SP	sp
#define	ESP	sp
#define	CS	cs
#define	SS	ss
#define	DS	ds
#define	ES	es
#define	FS	fs
#define	GS	gs
/* Control Registers */
#define	CR0	cr0
#define	CR1	cr1
#define	CR2	cr2
#define	CR3	cr3
/* Debug Registers */
#define	DR0	dr0
#define	DR1	dr1
#define	DR2	dr2
#define	DR3	dr3
#define	DR4	dr4
#define	DR5	dr5
#define	DR6	dr6
#define	DR7	dr7
/* Floating-point Stack */
#define	ST	st

#define	AS_BEGIN	.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text


#define	_WTOG		o16	/* word toggle for _W instructions */
#define	_LTOG			/* long toggle for _L instructions */
#define	ADDR_TOGGLE	a16
#define	OPSZ_TOGGLE	o16
#define	USE16		.use16
#define	USE32		.use32

#define	CHOICE(a,b,c)	c

#else /* AT&T or GAS */

/* Redefine register names for GAS & AT&T assemblers */
#define	AL	%al
#define	AH	%ah
#define	AX	%ax
#define	EAX	%eax
#define	BL	%bl
#define	BH	%bh
#define	BX	%bx
#define	EBX	%ebx
#define	CL	%cl
#define	CH	%ch
#define	CX	%cx
#define	ECX	%ecx
#define	DL	%dl
#define	DH	%dh
#define	DX	%dx
#define	EDX	%edx
#define	BP	%bp
#define	EBP	%ebp
#define	SI	%si
#define	ESI	%esi
#define	DI	%di
#define	EDI	%edi
#define	SP	%sp
#define	ESP	%esp
#define	CS	%cs
#define	SS	%ss
#define	DS	%ds
#define	ES	%es
#define	FS	%fs
#define	GS	%gs
/* Control Registers */
#define	CR0	%cr0
#define	CR1	%cr1
#define	CR2	%cr2
#define	CR3	%cr3
/* Debug Registers */
#define	DR0	%db0
#define	DR1	%db1
#define	DR2	%db2
#define	DR3	%db3
#define	DR4	%db4
#define	DR5	%db5
#define	DR6	%db6
#define	DR7	%db7
/* Floating-point Stack */
#define	ST	%st

#define	AS_BEGIN
#define	USE16
#define	USE32

#ifdef GNU_ASSEMBLER

#define	ADDR_TOGGLE	aword
#define	OPSZ_TOGGLE	word

#define	CHOICE(a,b,c)	b

#else
/*
 * AT&T ASSEMBLER SYNTAX
 * *********************
 */
#define	CHOICE(a,b,c)	a

#define	ADDR_TOGGLE	addr16
#define	OPSZ_TOGGLE	data16

#endif /* GNU_ASSEMBLER */
#endif /* ACK_ASSEMBLER */


#if defined(__QNX__) || defined(Lynx) || (defined(SYSV) || defined(SVR4)) && !defined(ACK_ASSEMBLER) || defined(__ELF__) || defined(__GNU__)
#define GLNAME(a)       a
#else
#define GLNAME(a)       CONCAT(_,a)
#endif


	/****************************************/
	/*					*/
	/*	Select the various choices	*/
	/*					*/
	/****************************************/


/* Redefine assembler directives */
/*********************************/
#define GLOBL		CHOICE(.globl, .globl, .extern)
#define	ALIGNTEXT4	CHOICE(.align 4, .align ARG2(2,0x90), .align 4)
#define	ALIGNTEXT2	CHOICE(.align 2, .align ARG2(1,0x90), .align 2)
/* ALIGNTEXT4ifNOP is the same as ALIGNTEXT4, but only if the space is
 * guaranteed to be filled with NOPs.  Otherwise it does nothing.
 */
#define	ALIGNTEXT4ifNOP	CHOICE(.align 4, .align ARG2(2,0x90), /*can't do it*/)
#define	ALIGNDATA4	CHOICE(.align 4, .align ARG2(2,0x0), .align 4)
#define	ALIGNDATA2	CHOICE(.align 2, .align ARG2(1,0x0), .align 2)
#define	FILE(s)		CHOICE(.file s, .file s, .file s)
#define	STRING(s)	CHOICE(.string s, .asciz s, .asciz s)
#define	D_LONG		CHOICE(.long, .long, .data4)
#define	D_WORD		CHOICE(.value, .short, .data2)
#define	D_BYTE		CHOICE(.byte, .byte, .data1)
#define	SPACE		CHOICE(.comm, .space, .space)
#define	COMM		CHOICE(.comm, .comm, .comm)
#define	SEG_DATA	CHOICE(.data, .data, .sect .data)
#define	SEG_TEXT	CHOICE(.text, .text, .sect .text)
#define	SEG_BSS		CHOICE(.bss, .bss, .sect .bss)

#ifdef GNU_ASSEMBLER
#define	D_SPACE(n)	. = . + n
#else
#define	D_SPACE(n)	.space n
#endif

/* Addressing Modes */
/* Immediate Mode */
#define	ADDR(a)		CHOICE(CONCAT($,a), CONCAT($,a), a)
#define	CONST(a)	CHOICE(CONCAT($,a), CONCAT($,a), a)

/* Indirect Mode */
#define	CONTENT(a)	CHOICE(a, a, (a))	 /* take contents of variable */
#define	REGIND(a)	CHOICE((a), (a), (a))	 /* Register a indirect */
/* Register b indirect plus displacement a */
#define	REGOFF(a, b)	CHOICE(a(b), a(b), a(b))
/* Reg indirect Base + Index + Displacement  - this is mainly for 16-bit mode
 * which has no scaling
 */
#define	REGBID(b,i,d)	CHOICE(d(b,i), d(b,i), d(b)(i))
/* Reg indirect Base + (Index * Scale) + Displacement */
#define	REGBISD(b,i,s,d) CHOICE(d(b,i,s), d(b,i,s), d(b)(i*s))
/* Displaced Scaled Index: */
#define REGDIS(d,i,s)	CHOICE(d(,i,s), d(,i,s), d(i * s))
/* Indexed Base: */
#define REGBI(b,i)	CHOICE((b,i), (b,i), (b)(i))
/* Displaced Base: */
#define REGDB(d,b)	CHOICE(d(b), d(b), d(b))
/* Variable indirect: */
#define VARINDIRECT(var) CHOICE(*var, *var, (var))
/* Use register contents as jump/call target: */
#define CODEPTR(reg)	CHOICE(*reg, *reg, reg)

/* For expressions requiring bracketing
 * eg. (CRT0_PM | CRT_EM)
 */

#define	EXPR(a)		CHOICE([a], (a), [a])
#define	ENOT(a)		CHOICE(0!a, ~a, ~a)
#define	EMUL(a,b)	CHOICE(a\*b, a*b, a*b)
#define	EDIV(a,b)	CHOICE(a\/b, a/b, a/b)

/*
 * We have to beat the problem of commas within arguments to choice.
 * eg. choice (add a,b, add b,a) will get argument mismatch.  Luckily ANSI
 * and other known cpp definitions evaluate arguments before substitution
 * so the following works.
 */
#define	ARG2(a, b)	a,b
#define	ARG3(a,b,c)	a,b,c

/* Redefine assembler commands */
#define	AAA		CHOICE(aaa, aaa, aaa)
#define	AAD		CHOICE(aad, aad, aad)
#define	AAM		CHOICE(aam, aam, aam)
#define	AAS		CHOICE(aas, aas, aas)
#define	ADC_L(a, b)	CHOICE(adcl ARG2(a,b), adcl ARG2(a,b), _LTOG adc ARG2(b,a))
#define	ADC_W(a, b)	CHOICE(adcw ARG2(a,b), adcw ARG2(a,b), _WTOG adc ARG2(b,a))
#define	ADC_B(a, b)	CHOICE(adcb ARG2(a,b), adcb ARG2(a,b), adcb ARG2(b,a))
#define	ADD_L(a, b)	CHOICE(addl ARG2(a,b), addl ARG2(a,b), _LTOG add ARG2(b,a))
#define	ADD_W(a, b)	CHOICE(addw ARG2(a,b), addw ARG2(a,b), _WTOG add ARG2(b,a))
#define	ADD_B(a, b)	CHOICE(addb ARG2(a,b), addb ARG2(a,b), addb ARG2(b,a))
#define	AND_L(a, b)	CHOICE(andl ARG2(a,b), andl ARG2(a,b), _LTOG and ARG2(b,a))
#define	AND_W(a, b)	CHOICE(andw ARG2(a,b), andw ARG2(a,b), _WTOG and ARG2(b,a))
#define	AND_B(a, b)	CHOICE(andb ARG2(a,b), andb ARG2(a,b), andb ARG2(b,a))
#define	ARPL(a,b)	CHOICE(arpl ARG2(a,b), arpl ARG2(a,b), arpl ARG2(b,a))
#define	BOUND_L(a, b)	CHOICE(boundl ARG2(a,b), boundl ARG2(b,a), _LTOG bound ARG2(b,a))
#define	BOUND_W(a, b)	CHOICE(boundw ARG2(a,b), boundw ARG2(b,a), _WTOG bound ARG2(b,a))
#define	BSF_L(a, b)	CHOICE(bsfl ARG2(a,b), bsfl ARG2(a,b), _LTOG bsf ARG2(b,a))
#define	BSF_W(a, b)	CHOICE(bsfw ARG2(a,b), bsfw ARG2(a,b), _WTOG bsf ARG2(b,a))
#define	BSR_L(a, b)	CHOICE(bsrl ARG2(a,b), bsrl ARG2(a,b), _LTOG bsr ARG2(b,a))
#define	BSR_W(a, b)	CHOICE(bsrw ARG2(a,b), bsrw ARG2(a,b), _WTOG bsr ARG2(b,a))
#define	BT_L(a, b)	CHOICE(btl ARG2(a,b), btl ARG2(a,b), _LTOG bt ARG2(b,a))
#define	BT_W(a, b)	CHOICE(btw ARG2(a,b), btw ARG2(a,b), _WTOG bt ARG2(b,a))
#define	BTC_L(a, b)	CHOICE(btcl ARG2(a,b), btcl ARG2(a,b), _LTOG btc ARG2(b,a))
#define	BTC_W(a, b)	CHOICE(btcw ARG2(a,b), btcw ARG2(a,b), _WTOG btc ARG2(b,a))
#define	BTR_L(a, b)	CHOICE(btrl ARG2(a,b), btrl ARG2(a,b), _LTOG btr ARG2(b,a))
#define	BTR_W(a, b)	CHOICE(btrw ARG2(a,b), btrw ARG2(a,b), _WTOG btr ARG2(b,a))
#define	BTS_L(a, b)	CHOICE(btsl ARG2(a,b), btsl ARG2(a,b), _LTOG bts ARG2(b,a))
#define	BTS_W(a, b)	CHOICE(btsw ARG2(a,b), btsw ARG2(a,b), _WTOG bts ARG2(b,a))
#define	CALL(a)		CHOICE(call a, call a, call a)
#define	CALLF(s,a)	CHOICE(lcall ARG2(s,a), lcall ARG2(s,a), callf s:a)
#define	CBW		CHOICE(cbtw, cbw, cbw)
#define	CWDE		CHOICE(cwtd, cwde, cwde)
#define	CLC		CHOICE(clc, clc, clc)
#define	CLD		CHOICE(cld, cld, cld)
#define	CLI		CHOICE(cli, cli, cli)
#define	CLTS		CHOICE(clts, clts, clts)
#define	CMC		CHOICE(cmc, cmc, cmc)
#define	CMP_L(a, b)	CHOICE(cmpl ARG2(a,b), cmpl ARG2(a,b), _LTOG cmp ARG2(b,a))
#define	CMP_W(a, b)	CHOICE(cmpw ARG2(a,b), cmpw ARG2(a,b), _WTOG cmp ARG2(b,a))
#define	CMP_B(a, b)	CHOICE(cmpb ARG2(a,b), cmpb ARG2(a,b), cmpb ARG2(b,a))
#define	CMPS_L		CHOICE(cmpsl, cmpsl, _LTOG cmps)
#define	CMPS_W		CHOICE(cmpsw, cmpsw, _WTOG cmps)
#define	CMPS_B		CHOICE(cmpsb, cmpsb, cmpsb)
#define	CWD		CHOICE(cwtl, cwd, cwd)
#define	CDQ		CHOICE(cltd, cdq, cdq)
#define	DAA		CHOICE(daa, daa, daa)
#define	DAS		CHOICE(das, das, das)
#define	DEC_L(a)	CHOICE(decl a, decl a, _LTOG dec a)
#define	DEC_W(a)	CHOICE(decw a, decw a, _WTOG dec a)
#define	DEC_B(a)	CHOICE(decb a, decb a, decb a)
#define	DIV_L(a)	CHOICE(divl a, divl a, div a)
#define	DIV_W(a)	CHOICE(divw a, divw a, div a)
#define	DIV_B(a)	CHOICE(divb a, divb a, divb a)
#define	ENTER(a,b)	CHOICE(enter ARG2(a,b), enter ARG2(a,b), enter ARG2(b,a))
#define	HLT		CHOICE(hlt, hlt, hlt)
#define	IDIV_L(a)	CHOICE(idivl a, idivl a, _LTOG idiv a)
#define	IDIV_W(a)	CHOICE(idivw a, idivw a, _WTOG idiv a)
#define	IDIV_B(a)	CHOICE(idivb a, idivb a, idivb a)
/* More forms than this for imul!! */
#define	IMUL_L(a, b)	CHOICE(imull ARG2(a,b), imull ARG2(a,b), _LTOG imul ARG2(b,a))
#define	IMUL_W(a, b)	CHOICE(imulw ARG2(a,b), imulw ARG2(a,b), _WTOG imul ARG2(b,a))
#define	IMUL_B(a)	CHOICE(imulb a, imulb a, imulb a)
#define	IN_L		CHOICE(inl (DX), inl ARG2(DX,EAX), _LTOG in DX)
#define	IN_W		CHOICE(inw (DX), inw ARG2(DX,AX), _WTOG in DX)
#define	IN_B		CHOICE(inb (DX), inb ARG2(DX,AL), inb DX)
/* Please AS code writer: use the following ONLY, if you refer to ports<256
 * directly, but not in IN1_W(DX), for instance, even if IN1_ looks nicer
 */
#if defined (sun)
#define IN1_L(a)    CHOICE(inl (a), inl ARG2(a,EAX), _LTOG in a)
#define IN1_W(a)    CHOICE(inw (a), inw ARG2(a,AX), _WTOG in a)
#define IN1_B(a)    CHOICE(inb (a), inb ARG2(a,AL), inb a)
#else
#define	IN1_L(a)	CHOICE(inl a, inl ARG2(a,EAX), _LTOG in a)
#define	IN1_W(a)	CHOICE(inw a, inw ARG2(a,AX), _WTOG in a)
#define	IN1_B(a)	CHOICE(inb a, inb ARG2(a,AL), inb a)
#endif
#define	INC_L(a)	CHOICE(incl a, incl a, _LTOG inc a)
#define	INC_W(a)	CHOICE(incw a, incw a, _WTOG inc a)
#define	INC_B(a)	CHOICE(incb a, incb a, incb a)
#define	INS_L		CHOICE(insl, insl, _LTOG ins)
#define	INS_W		CHOICE(insw, insw, _WTOG ins)
#define	INS_B		CHOICE(insb, insb, insb)
#define	INT(a)		CHOICE(int a, int a, int a)
#define	INT3		CHOICE(int CONST(3), int3, int CONST(3))
#define	INTO		CHOICE(into, into, into)
#define	IRET		CHOICE(iret, iret, iret)
#define	IRETD		CHOICE(iret, iret, iretd)
#define	JA(a)		CHOICE(ja a, ja a, ja a)
#define	JAE(a)		CHOICE(jae a, jae a, jae a)
#define	JB(a)		CHOICE(jb a, jb a, jb a)
#define	JBE(a)		CHOICE(jbe a, jbe a, jbe a)
#define	JC(a)		CHOICE(jc a, jc a, jc a)
#define	JE(a)		CHOICE(je a, je a, je a)
#define	JG(a)		CHOICE(jg a, jg a, jg a)
#define	JGE(a)		CHOICE(jge a, jge a, jge a)
#define	JL(a)		CHOICE(jl a, jl a, jl a)
#define	JLE(a)		CHOICE(jle a, jle a, jle a)
#define	JNA(a)		CHOICE(jna a, jna a, jna a)
#define	JNAE(a)		CHOICE(jnae a, jnae a, jnae a)
#define	JNB(a)		CHOICE(jnb a, jnb a, jnb a)
#define	JNBE(a)		CHOICE(jnbe a, jnbe a, jnbe a)
#define	JNC(a)		CHOICE(jnc a, jnc a, jnc a)
#define	JNE(a)		CHOICE(jne a, jne a, jne a)
#define	JNG(a)		CHOICE(jng a, jng a, jng a)
#define	JNGE(a)		CHOICE(jnge a, jnge a, jnge a)
#define	JNL(a)		CHOICE(jnl a, jnl a, jnl a)
#define	JNLE(a)		CHOICE(jnle a, jnle a, jnle a)
#define	JNO(a)		CHOICE(jno a, jno a, jno a)
#define	JNP(a)		CHOICE(jnp a, jnp a, jnp a)
#define	JNS(a)		CHOICE(jns a, jns a, jns a)
#define	JNZ(a)		CHOICE(jnz a, jnz a, jnz a)
#define	JO(a)		CHOICE(jo a, jo a, jo a)
#define	JP(a)		CHOICE(jp a, jp a, jp a)
#define	JPE(a)		CHOICE(jpe a, jpe a, jpe a)
#define	JPO(a)		CHOICE(jpo a, jpo a, jpo a)
#define	JS(a)		CHOICE(js a, js a, js a)
#define	JZ(a)		CHOICE(jz a, jz a, jz a)
#define	JMP(a)		CHOICE(jmp a, jmp a, jmp a)
#define	JMPF(s,a)	CHOICE(ljmp ARG2(s,a), ljmp ARG2(s,a), jmpf s:a)
#define	LAHF		CHOICE(lahf, lahf, lahf)
#if !defined(_REAL_MODE) && !defined(_V86_MODE)
#define	LAR(a, b)	CHOICE(lar ARG2(a, b), lar ARG2(a, b), lar ARG2(b, a))
#endif
#define	LEA_L(a, b)	CHOICE(leal ARG2(a,b), leal ARG2(a,b), _LTOG lea ARG2(b,a))
#define	LEA_W(a, b)	CHOICE(leaw ARG2(a,b), leaw ARG2(a,b), _WTOG lea ARG2(b,a))
#define	LEAVE		CHOICE(leave, leave, leave)
#define	LGDT(a)		CHOICE(lgdt a, lgdt a, lgdt a)
#define	LIDT(a)		CHOICE(lidt a, lidt a, lidt a)
#define	LDS(a, b)	CHOICE(ldsl ARG2(a,b), lds ARG2(a,b), lds ARG2(b,a))
#define	LES(a, b)	CHOICE(lesl ARG2(a,b), les ARG2(a,b), les ARG2(b,a))
#define	LFS(a, b)	CHOICE(lfsl ARG2(a,b), lfs ARG2(a,b), lfs ARG2(b,a))
#define	LGS(a, b)	CHOICE(lgsl ARG2(a,b), lgs ARG2(a,b), lgs ARG2(b,a))
#define	LSS(a, b)	CHOICE(lssl ARG2(a,b), lss ARG2(a,b), lss ARG2(b,a))
#define	LLDT(a)		CHOICE(lldt a, lldt a, lldt a)
#define	LMSW(a)		CHOICE(lmsw a, lmsw a, lmsw a)
#define LOCK		CHOICE(lock, lock, lock)
#define	LODS_L		CHOICE(lodsl, lodsl, _LTOG lods)
#define	LODS_W		CHOICE(lodsw, lodsw, _WTOG lods)
#define	LODS_B		CHOICE(lodsb, lodsb, lodsb)
#define	LOOP(a)		CHOICE(loop a, loop a, loop a)
#define	LOOPE(a)	CHOICE(loope a, loope a, loope a)
#define	LOOPZ(a)	CHOICE(loopz a, loopz a, loopz a)
#define	LOOPNE(a)	CHOICE(loopne a, loopne a, loopne a)
#define	LOOPNZ(a)	CHOICE(loopnz a, loopnz a, loopnz a)
#if !defined(_REAL_MODE) && !defined(_V86_MODE)
#define	LSL(a, b)	CHOICE(lsl ARG2(a,b), lsl ARG2(a,b), lsl ARG2(b,a))
#endif
#define	LTR(a)		CHOICE(ltr a, ltr a, ltr a)
#define	MOV_SR(a, b)	CHOICE(movw ARG2(a,b), mov ARG2(a,b), mov ARG2(b,a))
#define	MOV_L(a, b)	CHOICE(movl ARG2(a,b), movl ARG2(a,b), _LTOG mov ARG2(b,a))
#define	MOV_W(a, b)	CHOICE(movw ARG2(a,b), movw ARG2(a,b), _WTOG mov ARG2(b,a))
#define	MOV_B(a, b)	CHOICE(movb ARG2(a,b), movb ARG2(a,b), movb ARG2(b,a))
#define	MOVS_L		CHOICE(movsl, movsl, _LTOG movs)
#define	MOVS_W		CHOICE(movsw, movsw, _WTOG movs)
#define	MOVS_B		CHOICE(movsb, movsb, movsb)
#define	MOVSX_BL(a, b)	CHOICE(movsbl ARG2(a,b), movsbl ARG2(a,b), movsx ARG2(b,a))
#define	MOVSX_BW(a, b)	CHOICE(movsbw ARG2(a,b), movsbw ARG2(a,b), movsx ARG2(b,a))
#define	MOVSX_WL(a, b)	CHOICE(movswl ARG2(a,b), movswl ARG2(a,b), movsx ARG2(b,a))
#define	MOVZX_BL(a, b)	CHOICE(movzbl ARG2(a,b), movzbl ARG2(a,b), movzx ARG2(b,a))
#define	MOVZX_BW(a, b)	CHOICE(movzbw ARG2(a,b), movzbw ARG2(a,b), movzx ARG2(b,a))
#define	MOVZX_WL(a, b)	CHOICE(movzwl ARG2(a,b), movzwl ARG2(a,b), movzx ARG2(b,a))
#define	MUL_L(a)	CHOICE(mull a, mull a, _LTOG mul a)
#define	MUL_W(a)	CHOICE(mulw a, mulw a, _WTOG mul a)
#define	MUL_B(a)	CHOICE(mulb a, mulb a, mulb a)
#define	NEG_L(a)	CHOICE(negl a, negl a, _LTOG neg a)
#define	NEG_W(a)	CHOICE(negw a, negw a, _WTOG neg a)
#define	NEG_B(a)	CHOICE(negb a, negb a, negb a)
#define	NOP		CHOICE(nop, nop, nop)
#define	NOT_L(a)	CHOICE(notl a, notl a, _LTOG not a)
#define	NOT_W(a)	CHOICE(notw a, notw a, _WTOG not a)
#define	NOT_B(a)	CHOICE(notb a, notb a, notb a)
#define	OR_L(a,b)	CHOICE(orl ARG2(a,b), orl ARG2(a,b), _LTOG or ARG2(b,a))
#define	OR_W(a,b)	CHOICE(orw ARG2(a,b), orw ARG2(a,b), _WTOG or ARG2(b,a))
#define	OR_B(a,b)	CHOICE(orb ARG2(a,b), orb ARG2(a,b), orb ARG2(b,a))
#define	OUT_L		CHOICE(outl (DX), outl ARG2(EAX,DX), _LTOG out DX)
#define	OUT_W		CHOICE(outw (DX), outw ARG2(AX,DX), _WTOG out DX)
#define	OUT_B		CHOICE(outb (DX), outb ARG2(AL,DX), outb DX)
/* Please AS code writer: use the following ONLY, if you refer to ports<256
 * directly, but not in OUT1_W(DX), for instance, even if OUT1_ looks nicer
 */
#define	OUT1_L(a)	CHOICE(outl (a), outl ARG2(EAX,a), _LTOG out a)
#define	OUT1_W(a)	CHOICE(outw (a), outw ARG2(AX,a), _WTOG out a)
#define	OUT1_B(a)	CHOICE(outb (a), outb ARG2(AL,a), outb a)
#define	OUTS_L		CHOICE(outsl, outsl, _LTOG outs)
#define	OUTS_W		CHOICE(outsw, outsw, _WTOG outs)
#define	OUTS_B		CHOICE(outsb, outsb, outsb)
#define	POP_SR(a)	CHOICE(pop a, pop a, pop a)
#define	POP_L(a)	CHOICE(popl a, popl a, _LTOG pop a)
#define	POP_W(a)	CHOICE(popw a, popw a, _WTOG pop a)
#define	POPA_L		CHOICE(popal, popal, _LTOG popa)
#define	POPA_W		CHOICE(popaw, popaw, _WTOG popa)
#define	POPF_L		CHOICE(popfl, popfl, _LTOG popf)
#define	POPF_W		CHOICE(popfw, popfw, _WTOG popf)
#define	PUSH_SR(a)	CHOICE(push a, push a, push a)
#define	PUSH_L(a)	CHOICE(pushl a, pushl a, _LTOG push a)
#define	PUSH_W(a)	CHOICE(pushw a, pushw a, _WTOG push a)
#define	PUSH_B(a)	CHOICE(push a, pushb a, push a)
#define	PUSHA_L		CHOICE(pushal, pushal, _LTOG pusha)
#define	PUSHA_W		CHOICE(pushaw, pushaw, _WTOG pusha)
#define	PUSHF_L		CHOICE(pushfl, pushfl, _LTOG pushf)
#define	PUSHF_W		CHOICE(pushfw, pushfw, _WTOG pushf)
#define	RCL_L(a, b)	CHOICE(rcll ARG2(a,b), rcll ARG2(a,b), _LTOG rcl ARG2(b,a))
#define	RCL_W(a, b)	CHOICE(rclw ARG2(a,b), rclw ARG2(a,b), _WTOG rcl ARG2(b,a))
#define	RCL_B(a, b)	CHOICE(rclb ARG2(a,b), rclb ARG2(a,b), rclb ARG2(b,a))
#define	RCR_L(a, b)	CHOICE(rcrl ARG2(a,b), rcrl ARG2(a,b), _LTOG rcr ARG2(b,a))
#define	RCR_W(a, b)	CHOICE(rcrw ARG2(a,b), rcrw ARG2(a,b), _WTOG rcr ARG2(b,a))
#define	RCR_B(a, b)	CHOICE(rcrb ARG2(a,b), rcrb ARG2(a,b), rcrb ARG2(b,a))
#define	ROL_L(a, b)	CHOICE(roll ARG2(a,b), roll ARG2(a,b), _LTOG rol ARG2(b,a))
#define	ROL_W(a, b)	CHOICE(rolw ARG2(a,b), rolw ARG2(a,b), _WTOG rol ARG2(b,a))
#define	ROL_B(a, b)	CHOICE(rolb ARG2(a,b), rolb ARG2(a,b), rolb ARG2(b,a))
#define	ROR_L(a, b)	CHOICE(rorl ARG2(a,b), rorl ARG2(a,b), _LTOG ror ARG2(b,a))
#define	ROR_W(a, b)	CHOICE(rorw ARG2(a,b), rorw ARG2(a,b), _WTOG ror ARG2(b,a))
#define	ROR_B(a, b)	CHOICE(rorb ARG2(a,b), rorb ARG2(a,b), rorb ARG2(b,a))
#define	REP		CHOICE(rep ;, rep ;, repe)
#define	REPE		CHOICE(repz ;, repe ;, repe)
#define	REPNE		CHOICE(repnz ;, repne ;, repne)
#define	REPNZ		REPNE
#define	REPZ		REPE
#define	RET		CHOICE(ret, ret, ret)
#define	SAHF		CHOICE(sahf, sahf, sahf)
#define	SAL_L(a, b)	CHOICE(sall ARG2(a,b), sall ARG2(a,b), _LTOG sal ARG2(b,a))
#define	SAL_W(a, b)	CHOICE(salw ARG2(a,b), salw ARG2(a,b), _WTOG sal ARG2(b,a))
#define	SAL_B(a, b)	CHOICE(salb ARG2(a,b), salb ARG2(a,b), salb ARG2(b,a))
#define	SAR_L(a, b)	CHOICE(sarl ARG2(a,b), sarl ARG2(a,b), _LTOG sar ARG2(b,a))
#define	SAR_W(a, b)	CHOICE(sarw ARG2(a,b), sarw ARG2(a,b), _WTOG sar ARG2(b,a))
#define	SAR_B(a, b)	CHOICE(sarb ARG2(a,b), sarb ARG2(a,b), sarb ARG2(b,a))
#define	SBB_L(a, b)	CHOICE(sbbl ARG2(a,b), sbbl ARG2(a,b), _LTOG sbb ARG2(b,a))
#define	SBB_W(a, b)	CHOICE(sbbw ARG2(a,b), sbbw ARG2(a,b), _WTOG sbb ARG2(b,a))
#define	SBB_B(a, b)	CHOICE(sbbb ARG2(a,b), sbbb ARG2(a,b), sbbb ARG2(b,a))
#define	SCAS_L		CHOICE(scasl, scasl, _LTOG scas)
#define	SCAS_W		CHOICE(scasw, scasw, _WTOG scas)
#define	SCAS_B		CHOICE(scasb, scasb, scasb)
#define	SETA(a)		CHOICE(seta a, seta a, seta a)
#define	SETAE(a)	CHOICE(setae a, setae a, setae a)
#define	SETB(a)		CHOICE(setb a, setb a, setb a)
#define	SETBE(a)	CHOICE(setbe a, setbe a, setbe a)
#define	SETC(a)		CHOICE(setc a, setb a, setb a)
#define	SETE(a)		CHOICE(sete a, sete a, sete a)
#define	SETG(a)		CHOICE(setg a, setg a, setg a)
#define	SETGE(a)	CHOICE(setge a, setge a, setge a)
#define	SETL(a)		CHOICE(setl a, setl a, setl a)
#define	SETLE(a)	CHOICE(setle a, setle a, setle a)
#define	SETNA(a)	CHOICE(setna a, setna a, setna a)
#define	SETNAE(a)	CHOICE(setnae a, setnae a, setnae a)
#define	SETNB(a)	CHOICE(setnb a, setnb a, setnb a)
#define	SETNBE(a)	CHOICE(setnbe a, setnbe a, setnbe a)
#define	SETNC(a)	CHOICE(setnc a, setnb a, setnb a)
#define	SETNE(a)	CHOICE(setne a, setne a, setne a)
#define	SETNG(a)	CHOICE(setng a, setng a, setng a)
#define	SETNGE(a)	CHOICE(setnge a, setnge a, setnge a)
#define	SETNL(a)	CHOICE(setnl a, setnl a, setnl a)
#define	SETNLE(a)	CHOICE(setnle a, setnle a, setnle a)
#define	SETNO(a)	CHOICE(setno a, setno a, setno a)
#define	SETNP(a)	CHOICE(setnp a, setnp a, setnp a)
#define	SETNS(a)	CHOICE(setns a, setns a, setna a)
#define	SETNZ(a)	CHOICE(setnz a, setnz a, setnz a)
#define	SETO(a)		CHOICE(seto a, seto a, seto a)
#define	SETP(a)		CHOICE(setp a, setp a, setp a)
#define	SETPE(a)	CHOICE(setpe a, setpe a, setpe a)
#define	SETPO(a)	CHOICE(setpo a, setpo a, setpo a)
#define	SETS(a)		CHOICE(sets a, sets a, seta a)
#define	SETZ(a)		CHOICE(setz a, setz a, setz a)
#define	SGDT(a)		CHOICE(sgdt a, sgdt a, sgdt a)
#define	SIDT(a)		CHOICE(sidt a, sidt a, sidt a)
#define	SHL_L(a, b)	CHOICE(shll ARG2(a,b), shll ARG2(a,b), _LTOG shl ARG2(b,a))
#define	SHL_W(a, b)	CHOICE(shlw ARG2(a,b), shlw ARG2(a,b), _WTOG shl ARG2(b,a))
#define	SHL_B(a, b)	CHOICE(shlb ARG2(a,b), shlb ARG2(a,b), shlb ARG2(b,a))
#define	SHLD_L(a,b,c)	CHOICE(shldl ARG3(a,b,c), shldl ARG3(a,b,c), _LTOG shld ARG3(c,b,a))
#define	SHLD2_L(a,b)	CHOICE(shldl ARG2(a,b), shldl ARG3(CL,a,b), _LTOG shld ARG3(b,a,CL))
#define	SHLD_W(a,b,c)	CHOICE(shldw ARG3(a,b,c), shldw ARG3(a,b,c), _WTOG shld ARG3(c,b,a))
#define	SHLD2_W(a,b)	CHOICE(shldw ARG2(a,b), shldw ARG3(CL,a,b), _WTOG shld ARG3(b,a,CL))
#define	SHR_L(a, b)	CHOICE(shrl ARG2(a,b), shrl ARG2(a,b), _LTOG shr ARG2(b,a))
#define	SHR_W(a, b)	CHOICE(shrw ARG2(a,b), shrw ARG2(a,b), _WTOG shr ARG2(b,a))
#define	SHR_B(a, b)	CHOICE(shrb ARG2(a,b), shrb ARG2(a,b), shrb ARG2(b,a))
#define	SHRD_L(a,b,c)	CHOICE(shrdl ARG3(a,b,c), shrdl ARG3(a,b,c), _LTOG shrd ARG3(c,b,a))
#define	SHRD2_L(a,b)	CHOICE(shrdl ARG2(a,b), shrdl ARG3(CL,a,b), _LTOG shrd ARG3(b,a,CL))
#define	SHRD_W(a,b,c)	CHOICE(shrdw ARG3(a,b,c), shrdw ARG3(a,b,c), _WTOG shrd ARG3(c,b,a))
#define	SHRD2_W(a,b)	CHOICE(shrdw ARG2(a,b), shrdw ARG3(CL,a,b), _WTOG shrd ARG3(b,a,CL))
#define	SLDT(a)		CHOICE(sldt a, sldt a, sldt a)
#define	SMSW(a)		CHOICE(smsw a, smsw a, smsw a)
#define	STC		CHOICE(stc, stc, stc)
#define	STD		CHOICE(std, std, std)
#define	STI		CHOICE(sti, sti, sti)
#define	STOS_L		CHOICE(stosl, stosl, _LTOG stos)
#define	STOS_W		CHOICE(stosw, stosw, _WTOG stos)
#define	STOS_B		CHOICE(stosb, stosb, stosb)
#define	STR(a)		CHOICE(str a, str a, str a)
#define	SUB_L(a, b)	CHOICE(subl ARG2(a,b), subl ARG2(a,b), _LTOG sub ARG2(b,a))
#define	SUB_W(a, b)	CHOICE(subw ARG2(a,b), subw ARG2(a,b), _WTOG sub ARG2(b,a))
#define	SUB_B(a, b)	CHOICE(subb ARG2(a,b), subb ARG2(a,b), subb ARG2(b,a))
#define	TEST_L(a, b)	CHOICE(testl ARG2(a,b), testl ARG2(a,b), _LTOG test ARG2(b,a))
#define	TEST_W(a, b)	CHOICE(testw ARG2(a,b), testw ARG2(a,b), _WTOG test ARG2(b,a))
#define	TEST_B(a, b)	CHOICE(testb ARG2(a,b), testb ARG2(a,b), testb ARG2(b,a))
#define	VERR(a)		CHOICE(verr a, verr a, verr a)
#define	VERW(a)		CHOICE(verw a, verw a, verw a)
#define	WAIT		CHOICE(wait, wait, wait)
#define	XCHG_L(a, b)	CHOICE(xchgl ARG2(a,b), xchgl ARG2(a,b), _LTOG xchg ARG2(b,a))
#define	XCHG_W(a, b)	CHOICE(xchgw ARG2(a,b), xchgw ARG2(a,b), _WTOG xchg ARG2(b,a))
#define	XCHG_B(a, b)	CHOICE(xchgb ARG2(a,b), xchgb ARG2(a,b), xchgb ARG2(b,a))
#define	XLAT		CHOICE(xlat, xlat, xlat)
#define	XOR_L(a, b)	CHOICE(xorl ARG2(a,b), xorl ARG2(a,b), _LTOG xor ARG2(b,a))
#define	XOR_W(a, b)	CHOICE(xorw ARG2(a,b), xorw ARG2(a,b), _WTOG xor ARG2(b,a))
#define	XOR_B(a, b)	CHOICE(xorb ARG2(a,b), xorb ARG2(a,b), xorb ARG2(b,a))


/* Floating Point Instructions */
#define	F2XM1		CHOICE(f2xm1, f2xm1, f2xm1)
#define	FABS		CHOICE(fabs, fabs, fabs)
#define	FADD_D(a)	CHOICE(faddl a, faddl a, faddd a)
#define	FADD_S(a)	CHOICE(fadds a, fadds a, fadds a)
#define	FADD2(a, b)	CHOICE(fadd ARG2(a,b), fadd ARG2(a,b), fadd ARG2(b,a))
#define	FADDP(a, b)	CHOICE(faddp ARG2(a,b), faddp ARG2(a,b), faddp ARG2(b,a))
#define	FIADD_L(a)	CHOICE(fiaddl a, fiaddl a, fiaddl a)
#define	FIADD_W(a)	CHOICE(fiadd a, fiadds a, fiadds a)
#define	FBLD(a)		CHOICE(fbld a, fbld a, fbld a)
#define	FBSTP(a)	CHOICE(fbstp a, fbstp a, fbstp a)
#define	FCHS		CHOICE(fchs, fchs, fchs)
#define	FCLEX		CHOICE(fclex, wait; fnclex, wait; fclex)
#define	FNCLEX		CHOICE(fnclex, fnclex, fclex)
#define	FCOM(a)		CHOICE(fcom a, fcom a, fcom a)
#define	FCOM_D(a)	CHOICE(fcoml a, fcoml a, fcomd a)
#define	FCOM_S(a)	CHOICE(fcoms a, fcoms a, fcoms a)
#define	FCOMP(a)	CHOICE(fcomp a, fcomp a, fcomp a)
#define	FCOMP_D(a)	CHOICE(fcompl a, fcompl a, fcompd a)
#define	FCOMP_S(a)	CHOICE(fcomps a, fcomps a, fcomps a)
#define	FCOMPP		CHOICE(fcompp, fcompp, fcompp)
#define	FCOS		CHOICE(fcos, fcos, fcos)
#define	FDECSTP		CHOICE(fdecstp, fdecstp, fdecstp)
#define	FDIV_D(a)	CHOICE(fdivl a, fdivl a, fdivd a)
#define	FDIV_S(a)	CHOICE(fdivs a, fdivs a, fdivs a)
#define	FDIV2(a, b)	CHOICE(fdiv ARG2(a,b), fdiv ARG2(a,b), fdiv ARG2(b,a))
#define	FDIVP(a, b)	CHOICE(fdivp ARG2(a,b), fdivp ARG2(a,b), fdivp ARG2(b,a))
#define	FIDIV_L(a)	CHOICE(fidivl a, fidivl a, fidivl a)
#define	FIDIV_W(a)	CHOICE(fidiv a, fidivs a, fidivs a)
#define	FDIVR_D(a)	CHOICE(fdivrl a, fdivrl a, fdivrd a)
#define	FDIVR_S(a)	CHOICE(fdivrs a, fdivrs a, fdivrs a)
#define	FDIVR2(a, b)	CHOICE(fdivr ARG2(a,b), fdivr ARG2(a,b), fdivr ARG2(b,a))
#define	FDIVRP(a, b)	CHOICE(fdivrp ARG2(a,b), fdivrp ARG2(a,b), fdivrp ARG2(b,a))
#define	FIDIVR_L(a)	CHOICE(fidivrl a, fidivrl a, fidivrl a)
#define	FIDIVR_W(a)	CHOICE(fidivr a, fidivrs a, fidivrs a)
#define	FFREE(a)	CHOICE(ffree a, ffree a, ffree a)
#define	FICOM_L(a)	CHOICE(ficoml a, ficoml a, ficoml a)
#define	FICOM_W(a)	CHOICE(ficom a, ficoms a, ficoms a)
#define	FICOMP_L(a)	CHOICE(ficompl a, ficompl a, ficompl a)
#define	FICOMP_W(a)	CHOICE(ficomp a, ficomps a, ficomps a)
#define	FILD_Q(a)	CHOICE(fildll a, fildq a, fildq a)
#define	FILD_L(a)	CHOICE(fildl a, fildl a, fildl a)
#define	FILD_W(a)	CHOICE(fild a, filds a, filds a)
#define	FINCSTP		CHOICE(fincstp, fincstp, fincstp)
#define	FINIT		CHOICE(finit, wait; fninit, wait; finit)
#define	FNINIT		CHOICE(fninit, fninit, finit)
#define	FIST_L(a)	CHOICE(fistl a, fistl a, fistl a)
#define	FIST_W(a)	CHOICE(fist a, fists a, fists a)
#define	FISTP_Q(a)	CHOICE(fistpll a, fistpq a, fistpq a)
#define	FISTP_L(a)	CHOICE(fistpl a, fistpl a, fistpl a)
#define	FISTP_W(a)	CHOICE(fistp a, fistps a, fistps a)
#define	FLD_X(a)	CHOICE(fldt a, fldt a, fldx a) /* 80 bit data type! */
#define	FLD_D(a)	CHOICE(fldl a, fldl a, fldd a)
#define	FLD_S(a)	CHOICE(flds a, flds a, flds a)
#define	FLD1		CHOICE(fld1, fld1, fld1)
#define	FLDL2T		CHOICE(fldl2t, fldl2t, fldl2t)
#define	FLDL2E		CHOICE(fldl2e, fldl2e, fldl2e)
#define	FLDPI		CHOICE(fldpi, fldpi, fldpi)
#define	FLDLG2		CHOICE(fldlg2, fldlg2, fldlg2)
#define	FLDLN2		CHOICE(fldln2, fldln2, fldln2)
#define	FLDZ		CHOICE(fldz, fldz, fldz)
#define	FLDCW(a)	CHOICE(fldcw a, fldcw a, fldcw a)
#define	FLDENV(a)	CHOICE(fldenv a, fldenv a, fldenv a)
#define	FMUL_S(a)	CHOICE(fmuls a, fmuls a, fmuls a)
#define	FMUL_D(a)	CHOICE(fmull a, fmull a, fmuld a)
#define	FMUL2(a, b)	CHOICE(fmul ARG2(a,b), fmul ARG2(a,b), fmul ARG2(b,a))
#define	FMULP(a, b)	CHOICE(fmulp ARG2(a,b), fmulp ARG2(a,b), fmulp ARG2(b,a))
#define	FIMUL_L(a)	CHOICE(fimull a, fimull a, fimull a)
#define	FIMUL_W(a)	CHOICE(fimul a, fimuls a, fimuls a)
#define	FNOP		CHOICE(fnop, fnop, fnop)
#define	FPATAN		CHOICE(fpatan, fpatan, fpatan)
#define	FPREM		CHOICE(fprem, fprem, fprem)
#define	FPREM1		CHOICE(fprem1, fprem1, fprem1)
#define	FPTAN		CHOICE(fptan, fptan, fptan)
#define	FRNDINT		CHOICE(frndint, frndint, frndint)
#define	FRSTOR(a)	CHOICE(frstor a, frstor a, frstor a)
#define	FSAVE(a)	CHOICE(fsave a, wait; fnsave a, wait; fsave a)
#define	FNSAVE(a)	CHOICE(fnsave a, fnsave a, fsave a)
#define	FSCALE		CHOICE(fscale, fscale, fscale)
#define	FSIN		CHOICE(fsin, fsin, fsin)
#define	FSINCOS		CHOICE(fsincos, fsincos, fsincos)
#define	FSQRT		CHOICE(fsqrt, fsqrt, fsqrt)
#define	FST_D(a)	CHOICE(fstl a, fstl a, fstd a)
#define	FST_S(a)	CHOICE(fsts a, fsts a, fsts a)
#define	FSTP_X(a)	CHOICE(fstpt a, fstpt a, fstpx a)
#define	FSTP_D(a)	CHOICE(fstpl a, fstpl a, fstpd a)
#define	FSTP_S(a)	CHOICE(fstps a, fstps a, fstps a)
#define	FSTCW(a)	CHOICE(fstcw a, wait; fnstcw a, wait; fstcw a)
#define	FNSTCW(a)	CHOICE(fnstcw a, fnstcw a, fstcw a)
#define	FSTENV(a)	CHOICE(fstenv a, wait; fnstenv a, fstenv a)
#define	FNSTENV(a)	CHOICE(fnstenv a, fnstenv a, fstenv a)
#define	FSTSW(a)	CHOICE(fstsw a, wait; fnstsw a, wait; fstsw a)
#define	FNSTSW(a)	CHOICE(fnstsw a, fnstsw a, fstsw a)
#define	FSUB_S(a)	CHOICE(fsubs a, fsubs a, fsubs a)
#define	FSUB_D(a)	CHOICE(fsubl a, fsubl a, fsubd a)
#define	FSUB2(a, b)	CHOICE(fsub ARG2(a,b), fsub ARG2(a,b), fsub ARG2(b,a))
#define	FSUBP(a, b)	CHOICE(fsubp ARG2(a,b), fsubp ARG2(a,b), fsubp ARG2(b,a))
#define	FISUB_L(a)	CHOICE(fisubl a, fisubl a, fisubl a)
#define	FISUB_W(a)	CHOICE(fisub a, fisubs a, fisubs a)
#define	FSUBR_S(a)	CHOICE(fsubrs a, fsubrs a, fsubrs a)
#define	FSUBR_D(a)	CHOICE(fsubrl a, fsubrl a, fsubrd a)
#define	FSUBR2(a, b)	CHOICE(fsubr ARG2(a,b), fsubr ARG2(a,b), fsubr ARG2(b,a))
#define	FSUBRP(a, b)	CHOICE(fsubrp ARG2(a,b), fsubrp ARG2(a,b), fsubrp ARG2(b,a))
#define	FISUBR_L(a)	CHOICE(fisubrl a, fisubrl a, fisubrl a)
#define	FISUBR_W(a)	CHOICE(fisubr a, fisubrs a, fisubrs a)
#define	FTST		CHOICE(ftst, ftst, ftst)
#define	FUCOM(a)	CHOICE(fucom a, fucom a, fucom a)
#define	FUCOMP(a)	CHOICE(fucomp a, fucomp a, fucomp a)
#define	FUCOMPP		CHOICE(fucompp, fucompp, fucompp)
#define	FWAIT		CHOICE(wait, wait, wait)
#define	FXAM		CHOICE(fxam, fxam, fxam)
#define	FXCH(a)		CHOICE(fxch a, fxch a, fxch a)
#define	FXTRACT		CHOICE(fxtract, fxtract, fxtract)
#define	FYL2X		CHOICE(fyl2x, fyl2x, fyl2x)
#define	FYL2XP1		CHOICE(fyl2xp1, fyl2xp1, fyl2xp1)

#endif /* __ASSYNTAX_H__ */