table.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 870 行 · 第 1/2 页

#ifndef lint
static char	*sccsid = " @(#)table.c	1.3	(ULTRIX)	1/16/86";
#endif lint

/************************************************************************
 *									*
 *			Copyright (c) 1986 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/

/************************************************************************
*
*			Modification History
*
*	David Metsky		14-Jan-86
*
* 001	Replaced old version with BSD 4.3 version as part of upgrade.
*
*	Based on:	table.c		1.11		8/23/85
*
*************************************************************************/

# include "pass2.h"

# define WPTR TPTRTO|TINT|TLONG|TFLOAT|TDOUBLE|TPOINT|TUNSIGNED|TULONG
# define AWD SNAME|SOREG|SCON|STARNM|STARREG
/* tbl */
# define ANYSIGNED TPOINT|TINT|TLONG|TSHORT|TCHAR
# define ANYUSIGNED TUNSIGNED|TULONG|TUSHORT|TUCHAR
# define ANYFIXED ANYSIGNED|ANYUSIGNED
# define TWORD TINT|TUNSIGNED|TPOINT|TLONG|TULONG
# define NIAWD SNAME|SCON|STARNM
/* tbl */

struct optab  table[] = {

PCONV,	INAREG|INTAREG,
	SAREG|AWD,	TCHAR|TSHORT,
	SANY,	TPOINT,
		NAREG|NASL,	RESC1,
		"	cvtZLl	AL,A1\n",

PCONV,	INAREG|INTAREG,
	SAREG|AWD,	TUCHAR|TUSHORT,
	SANY,	TPOINT,
		NAREG|NASL,	RESC1,
		"	movzZLl	AL,A1\n",

	/* the following entry is to fix a problem with
	   the manner that the first pass handles the
	   type of a shift expression                 */
PCONV,	INAREG|INTAREG,
	SAREG|AWD,	TINT|TUNSIGNED,
	SANY,	TPOINT,
		NAREG|NASL,	RLEFT,
		"",

#if defined(FORT) || defined(SPRECC)
SCONV,	INTAREG|FORCC,
	SAREG|AWD,	TDOUBLE,
	SANY,	TFLOAT,
		NAREG|NASL,	RESC1|RESCC,
		"	cvtdf	AL,A1\n",

SCONV,	INTAREG|FORCC,
	SAREG|AWD,	ANYSIGNED|TUNSIGNED|TULONG,
	SANY,	TFLOAT,
		NAREG|NASL,	RESC1|RESCC,
		"	cvtZLf	AL,TA1\n",

SCONV,	INTAREG|FORCC,
	SAREG|AWD,	TUCHAR|TUSHORT,
	SANY,	TFLOAT,
		NAREG|NASL,	RESC1|RESCC,
		"	movzZLl	AL,A1\n	cvtlf	A1,TA1\n",
#endif

SCONV,	INTAREG|FORCC,
	SAREG|AWD,	TUCHAR|TUSHORT,
	SANY,	TFLOAT|TDOUBLE,
		NAREG|NASL,	RESC1|RESCC,
		"	movzZLl	AL,A1\n	cvtld	A1,A1\n",

/* take care of redundant conversions introduced by reclaim() */
SCONV,	INTAREG,
	STAREG,	TWORD,
	SANY,	TWORD,
		0,	RLEFT,
		"",

SCONV,	INTAREG|FORCC,
	SAREG|AWD,	TANY,
	SANY,	TANY,
		NAREG|NASL,	RESC1|RESCC,
		"	ZA\n",


INIT,	FOREFF,
	SCON,	TANY,
	SANY,	TWORD,
		0,	RNOP,
		"	.long	CL\n",

INIT,	FOREFF,
	SCON,	TANY,
	SANY,	TSHORT|TUSHORT,
		0,	RNOP,
		"	.word	CL\n",

INIT,	FOREFF,
	SCON,	TANY,
	SANY,	TCHAR|TUCHAR,
		0,	RNOP,
		"	.byte	CL\n",

	/* for the use of fortran only */

GOTO,	FOREFF,
	SCON,	TANY,
	SANY,	TANY,
		0,	RNOP,
		"	jbr	CL\n",

GOTO,	FOREFF,
	SNAME|SOREG,	TANY,
	SANY,	TANY,
		0,	RNOP,
		"	jmp	*AL\n",

GOTO,	FOREFF,
	SAREG,	TANY,
	SANY,	TANY,
		0,	RNOP,
		"	jmp	(AL)\n",

STARG,	FORARG,
	SCON|SOREG,	TANY,
	SANY,	TANY,
		0,	RNULL,
		"	subl2	ZT,sp\nZS",

STASG,	FOREFF,
	SNAME|SOREG,	TANY,
	SCON|SAREG,	TANY,
		0,	RNOP,
		"ZS",

STASG,	INAREG,
	SNAME|SOREG,	TANY,
	SCON,	TANY,
		NAREG,	RESC1,
		"ZS	movl	AR,A1\n",

STASG,	INAREG,
	SNAME|SOREG,	TANY,
	SAREG,	TANY,
		0,	RRIGHT,
		"	pushl	AR\nZS	movl	(sp)+,AR\n",

FLD,	INAREG|INTAREG,
	SANY,	TANY,
	SFLD,	ANYSIGNED,
		NAREG|NASR,	RESC1,
		"	extv	$H,$S,AR,A1\n",

FLD,	INAREG|INTAREG,
	SANY,	TANY,
	SFLD,	ANYUSIGNED,
		NAREG|NASR,	RESC1,
		"	extzv	$H,$S,AR,A1\n",

FLD,	FORARG,
	SANY,	TANY,
	SFLD,	ANYSIGNED,
		0,	RNULL,
		"	extv	$H,$S,AR,-(sp)\n",

FLD,	FORARG,
	SANY,	TANY,
	SFLD,	ANYUSIGNED,
		0,	RNULL,
		"	extzv	$H,$S,AR,-(sp)\n",

OPLOG,	FORCC,
	SAREG|AWD,	TWORD,
	SAREG|AWD,	TWORD,
		0,	RESCC,
		"	cmpl	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TSHORT,
	SAREG|AWD,	TSHORT,
		0,	RESCC,
		"	cmpw	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TUSHORT,
	SAREG|AWD,	TUSHORT,
		0,	RESCC,
		"	cmpw	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TCHAR,
	SAREG|AWD,	TCHAR,
		0,	RESCC,
		"	cmpb	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TUCHAR,
	SAREG|AWD,	TUCHAR,
		0,	RESCC,
		"	cmpb	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TSHORT|TUSHORT,
	SSCON,	TANY,
		0,	RESCC,
		"	cmpw	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TCHAR|TUCHAR,
	SCCON,	TANY,
		0,	RESCC,
		"	cmpb	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TDOUBLE,
	SAREG|AWD,	TDOUBLE,
		0,	RESCC,
		"	cmpd	AL,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TDOUBLE,
	SAREG|AWD,	TFLOAT,
		NAREG|NASR,	RESCC,
		"	cvtfd	AR,A1\n	cmpd	AL,A1\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TFLOAT,
	SAREG|AWD,	TDOUBLE,
		NAREG|NASL,	RESCC,
		"	cvtfd	AL,A1\n	cmpd	A1,AR\nZP",

OPLOG,	FORCC,
	SAREG|AWD,	TFLOAT,
	SAREG|AWD,	TFLOAT,
		0,	RESCC,
		"	cmpf	AL,AR\nZP",

CCODES,	INAREG|INTAREG,
	SANY,	TANY,
	SANY,	TANY,
		NAREG,	RESC1,
		"	movl	$1,A1\nZN",

UNARY CALL,	INTAREG,
	SCON,	TANY,
	SANY,	TWORD|TCHAR|TUCHAR|TSHORT|TUSHORT|TFLOAT|TDOUBLE,
		NAREG|NASL,	RESC1,
		"	calls	ZC,CL\n",

UNARY CALL,	INTAREG,
	SAREG,	TANY,
	SANY,	TWORD|TCHAR|TUCHAR|TSHORT|TUSHORT|TFLOAT|TDOUBLE,
		NAREG|NASL,	RESC1,	/* should be 0 */
		"	calls	ZC,(AL)\n",

UNARY CALL,	INAREG|INTAREG,
	SNAME,	TANY,
	SANY,	TANY,
		NAREG|NASL,	RESC1,	/* really reg 0 */
		"	calls	ZC,*AL\n",

UNARY CALL,	INAREG|INTAREG,
	SSOREG,	TANY,
	SANY,	TANY,
		NAREG|NASL,	RESC1,	/* really reg 0 */
		"	calls	ZC,*AL\n",

ASG RS,	INAREG|FOREFF|FORCC,
	SAREG,	TWORD,
	SCON,	TINT,
		0,	RLEFT|RESCC,
		"	extzv	AR,ZU,AL,AL\n",

ASG RS,	INAREG|FOREFF|FORCC,
	SAREG,	TWORD,
	SAREG,	ANYFIXED,
		NAREG,	RLEFT|RESCC,
		"	subl3	AR,$32,A1\n	extzv	AR,A1,AL,AL\n",

ASG RS,	INAREG|FOREFF|FORCC,
	SAREG,	TWORD,
	SAREG|AWD,	TWORD,
		NAREG,	RLEFT|RESCC,
		"	subl3	AR,$32,A1\n	extzv	AR,A1,AL,AL\n",

RS,	INAREG|INTAREG|FORCC,
	SAREG,	TWORD,
	SCON,	TINT,
		NAREG|NASL,	RESC1|RESCC,
		"	extzv	AR,ZU,AL,A1\n",

ASG LS,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TWORD,
	SAREG|NIAWD,	ANYSIGNED|ANYUSIGNED,
		0,	RLEFT|RESCC,
		"	ashl	AR,AL,AL\n",

ASG LS,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TWORD,
	SSOREG,	ANYSIGNED|ANYUSIGNED,
		0,	RLEFT|RESCC,
		"	ashl	AR,AL,AL\n",

ASG LS,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TWORD,
	SOREG,	ANYSIGNED|ANYUSIGNED,
		NAREG,	RLEFT|RESCC,
		"	ZB	AR,A1\n	ashl	A1,AL,AL\n",

LS,	INAREG|INTAREG|FORCC,
	SAREG|AWD,	TWORD,
	SAREG|NIAWD,	ANYSIGNED|ANYUSIGNED,
		NAREG|NASL|NASR,	RESC1|RESCC,
		"	ashl	AR,AL,A1\n",

LS,	INAREG|INTAREG|FORCC,
	SAREG|AWD,	TWORD,
	SSOREG,	ANYSIGNED|ANYUSIGNED,
		NAREG|NASL|NASR,	RESC1|RESCC,
		"	ashl	AR,AL,A1\n",

LS,	INAREG|INTAREG|FORCC,
	SAREG|AWD,	TWORD,
	SOREG,	ANYSIGNED|ANYUSIGNED,
		NAREG|NASR,	RESC1|RESCC,
		"	ZB	AR,A1\n	ashl	A1,AL,A1\n",

INCR,	FOREFF,
	AWD,	TANY,
	SCON,	TANY,
		0,	RLEFT,
		"	ZE\n",

DECR,	FOREFF,
	AWD,	TANY,
	SCON,	TANY,
		0,	RLEFT,
		"	ZE\n",

INCR,	FOREFF,
	SAREG,	TWORD,
	SCON,	TANY,
		0,	RLEFT,
		"	ZE\n",

DECR,	FOREFF,
	SAREG,	TWORD,
	SCON,	TANY,
		0,	RLEFT,
		"	ZE\n",

/* jwf INCR and DECR for SAREG TCHAR|TSHORT matched by ASG PLUS etc */

INCR,	INAREG|INTAREG,
	AWD,	TANY,
	SCON,	TANY,
		NAREG,	RESC1,
		"	ZD\n",

DECR,	INAREG|INTAREG,
	AWD,	TANY,
	SCON,	TANY,
		NAREG,	RESC1,
		"	ZD\n",

INCR,	INAREG|INTAREG,
	SAREG,	TWORD,
	SCON,	TANY,
		NAREG,	RESC1,
		"	ZD\n",

DECR,	INAREG|INTAREG,
	SAREG,	TWORD,
	SCON,	TANY,
		NAREG,	RESC1,
		"	ZD\n",

ASSIGN,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TDOUBLE,
	SAREG|AWD,	TUCHAR|TUSHORT,
		NAREG|NASR,	RLEFT|RESCC,
		"	movzZRl	AR,A1\n	cvtld	A1,AL\n",

ASSIGN,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TFLOAT,
	SAREG|AWD,	TUCHAR|TUSHORT,
		NAREG|NASR,	RLEFT|RESCC,
		"	movzZRl	AR,A1\n	cvtlf	A1,AL\n",

ASSIGN,	INAREG|FOREFF|FORCC,
	SAREG|AWD,	TANY,
	SAREG|AWD,	TANY,
		0,	RLEFT|RRIGHT|RESCC,
		"	ZA\n",

ASSIGN,	INAREG|FOREFF,
	SFLD,	TANY,
	SAREG|AWD,	TWORD,
		0,	RRIGHT,
		"	insv	AR,$H,$S,AL\n",