inline.h

<B>Digital的Unix操作系统VAX 4.2源码</B>

/* static	char	*sccsid = "@(#)inline.h	4.1	(ULTRIX)	7/2/90"; */

/************************************************************************
 *									*
 *			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: /sys/vax/inline/inline.h
 *
 * 08 May 86 -- vjh
 *	Added DOUBLEQUOTE and Boolean.  Both are used in main().
 *
 * 13 Dec 84 -- jrs
 *	Add seperator pointer to pattern structure
 *	Derived from 4.2BSD, labeled:
 *		inline.h 1.2	84/08/20
 *
 * -----------------------------------------------------------------------
 */

/*
 * COMMENTCHAR is the character delimiting comments in the assembler.
 * LABELCHAR is the character that separates labels from instructions.
 * ARGSEPCHAR is the character that separates arguments in instructions.
 * DOUBLEQUOTE tells us we are in a string, so we cannot be a label (even
 *	if LABELCHAR is found)
 */
#define COMMENTCHAR	'#'
#define LABELCHAR	':'
#define ARGSEPCHAR	','
#define DOUBLEQUOTE	'"'

/*
 * Expansion parameters:
 *   QUEUESIZE is the number of instructions to be considered for 
 *	integration of argument pushes and pops
 *   MAXLINELEN is the longest expected input line
 *   MAXARGS is the maximum number of arguments in an assembly instruction
 */
#define QUEUESIZE	16
#define MAXLINELEN	128
#define MAXARGS		10

/*
 * The following global variables are used to manipulate the queue of
 * recently seen instructions.
 *	line - The queue of instructions.
 *	bufhead - Pointer to next availble queue slot. It is not
 *		considered part of te instruction stream until
 *		bufhead is advanced.
 *	buftail - Pointer to last instruction in queue.
 * Note that bufhead == buftail implies that the queue is empty.
 */
int bufhead, buftail;
char line[QUEUESIZE][MAXLINELEN];

#define SUCC(qindex) ((qindex) + 1 == QUEUESIZE ? 0 : (qindex) + 1)
#define PRED(qindex) ((qindex) - 1 < 0 ? QUEUESIZE - 1 : (qindex) - 1)

/*
 * Hash table headers should be twice as big as the number of patterns.
 * They must be a power of two.
 */
#define HSHSIZ	128

/*
 * These tables specify the substitutions that are to be done.
 */
struct pats {
	char	*name;
	char	*replace;
	char	*sep;
	struct	pats *next;
	int	size;
};
struct pats *patshdr[HSHSIZ];
extern struct pats language_ptab[], libc_ptab[], machine_ptab[];

typedef enum {false, true} Boolean;

/*
 * This table defines the set of instructions that demark the
 * end of a basic block.
 */
struct inststoptbl {
	char	*name;
	struct	inststoptbl *next;
	int	size;
};
struct inststoptbl *inststoptblhdr[HSHSIZ];
extern struct inststoptbl inststoptable[];

/*
 * Miscellaneous functions.
 */
char *newline(), *copyline(), *doreplaceon();