defs.h

早期freebsd实现

/*-
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)defs.h	8.1 (Berkeley) 6/6/93
 */

/*
 * Global debugger defines.
 *
 * All files include this header.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/*
 * Since C does not allow forward referencing of types,
 * all the global types are declared here.
 */

#define LOCAL static
#define NIL 0

typedef int BOOLEAN;

#define FALSE 0
#define TRUE 1

typedef unsigned int ADDRESS;		/* object code addresses */
typedef short LINENO;			/* source file line numbers */
typedef struct sym SYM;			/* symbol information structure */
typedef struct symtab SYMTAB;		/* symbol table */
typedef struct node NODE;		/* expression tree node */
typedef short OP;			/* tree operator */
typedef struct opinfo OPINFO;		/* tree operator information table */
typedef unsigned int WORD;		/* machine word */
typedef unsigned char BYTE;		/* machine byte */
typedef struct frame FRAME;		/* runtime activation record */

/*
 * Definitions of standard C library routines that aren't in the
 * standard I/O library, but which are generally useful.
 */

extern char *mktemp();		/* make a temporary file name */

/*
 * Definitions of library routines.
 */

char *cmdname;			/* name of command for error messages */
char *errfilename;		/* current file associated with error */
short errlineno;		/* line number associated with error */

int error();			/* print an error message */
int panic();			/* print error message and exit */
short numerrors();		/* return number of errors since last call */

/*
 * defintions for doing memory allocation
 */

#define alloc(n, type)	((type *) malloc((unsigned) (n) * sizeof(type)))
#define dispose(p)	{ free((char *) p); p = NIL; }

/*
 * macro for doing freads
 */

#define get(fp, var)	fread((char *) &(var), sizeof(var), 1, fp)

/*
 * string definitions
 */

#define streq(s1, s2)	(strcmp(s1, s2) == 0)