1 /* $OpenBSD: mdef.h,v 1.33 2015/11/03 16:21:47 deraadt Exp $ */
2 /* $NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk Exp $ */
5 * SPDX-License-Identifier: BSD-3-Clause
7 * Copyright (c) 1989, 1993
8 * The Regents of the University of California. All rights reserved.
10 * This code is derived from software contributed to Berkeley by
11 * Ozan Yigit at York University.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 # define UNUSED __attribute__((__unused__))
79 #define BUILTINTYPE 36
81 #define FILENAMETYPE 38
84 #define ESYSCMDTYPE 41
85 #define TRACEONTYPE 42
86 #define TRACEOFFTYPE 43
89 #define BUILTIN_MARKER "__builtin_"
91 #define TYPEMASK 63 /* Keep bits really corresponding to a type. */
92 #define RECDEF 256 /* Pure recursive def, don't expand it */
93 #define NOARGS 512 /* builtin needs no args */
94 #define NEEDARGS 1024 /* mark builtin that need args with this */
97 * m4 special characters
110 * other important constants
114 #define MAXINP 10 /* maximum include files */
115 #define MAXOUT 10 /* maximum # of diversions */
116 #define BUFSIZE 4096 /* starting size of pushback buffer */
117 #define INITSTACKMAX 4096 /* starting size of call stack */
118 #define STRSPMAX 4096 /* starting size of string space */
119 #define MAXTOK 512 /* maximum chars in a tokn */
120 #define MAXCCHARS 5 /* max size of comment/quote delim */
127 #define cycle for(;;)
133 typedef struct ndblock *ndptr;
135 struct macro_definition {
136 struct macro_definition *next;
137 char *defn; /* definition.. */
138 unsigned int type; /* type of the entry.. */
142 struct ndblock { /* hashtable structure */
143 unsigned int builtin_type;
144 unsigned int trace_flags;
145 struct macro_definition *d;
146 char name[1]; /* entry name.. */
149 typedef union { /* stack structure */
150 int sfra; /* frame entry */
151 char *sstr; /* string entry */
157 unsigned long lineno;
158 unsigned long synch_lineno; /* used for -s */
162 #define STORAGE_STRSPACE 0
163 #define STORAGE_MACRO 1
164 #define STORAGE_OTHER 2
166 #define CURRENT_NAME (infile[ilevel].name)
167 #define CURRENT_LINE (infile[ilevel].lineno)
169 * macros for readibility and/or speed
171 * gpbc() - get a possibly pushed-back character
172 * pushf() - push a call frame entry onto stack
173 * pushs() - push a string pointer onto stack
175 #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel)
178 if (++sp == (int)STACKMAX) \
180 mstack[sp].sfra = (x); \
181 sstack[sp] = STORAGE_OTHER; \
186 if (++sp == (int)STACKMAX) \
188 mstack[sp].sstr = (x); \
189 sstack[sp] = STORAGE_STRSPACE; \
194 if (++sp == (int)STACKMAX) \
196 mstack[sp].sstr = (x); \
197 sstack[sp] = STORAGE_OTHER; \
202 if (++sp == (int)STACKMAX) \
204 mstack[sp].sstr = macro_getdef(p)->defn;\
205 sstack[sp] = STORAGE_MACRO; \
213 * | arg 3 ----------------------->| str |
215 * | arg 2 ---PREVEP-----+ .
218 * +-------+ | +-----+
219 * | plev | PARLEV +-------->| str |
223 * | prcf ---PREVFP--+
232 #define PARLEV (mstack[fp].sfra)
233 #define CALTYP (mstack[fp-2].sfra)
234 #define TRACESTATUS (mstack[fp-1].sfra)
235 #define PREVEP (mstack[fp+3].sstr)
236 #define PREVSP (fp-4)
237 #define PREVFP (mstack[fp-3].sfra)