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 $ */ 3 4/*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1989, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Ozan Yigit at York University. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 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. 24 * 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 35 * SUCH DAMAGE. 36 * 37 * @(#)mdef.h 8.1 (Berkeley) 6/6/93 38 * $FreeBSD$ 39 */ 40 41#ifdef __GNUC__ 42# define UNUSED __attribute__((__unused__)) 43#else 44# define UNUSED 45#endif 46 47#define MACRTYPE 1 48#define DEFITYPE 2 49#define EXPRTYPE 3 50#define SUBSTYPE 4 51#define IFELTYPE 5 52#define LENGTYPE 6 53#define CHNQTYPE 7 54#define SYSCTYPE 8 55#define UNDFTYPE 9 56#define INCLTYPE 10 57#define SINCTYPE 11 58#define PASTTYPE 12 59#define SPASTYPE 13 60#define INCRTYPE 14 61#define IFDFTYPE 15 62#define PUSDTYPE 16 63#define POPDTYPE 17 64#define SHIFTYPE 18 65#define DECRTYPE 19 66#define DIVRTYPE 20 67#define UNDVTYPE 21 68#define DIVNTYPE 22 69#define MKTMTYPE 23 70#define ERRPTYPE 24 71#define M4WRTYPE 25 72#define TRNLTYPE 26 73#define DNLNTYPE 27 74#define DUMPTYPE 28 75#define CHNCTYPE 29 76#define INDXTYPE 30 77#define SYSVTYPE 31 78#define EXITTYPE 32 79#define DEFNTYPE 33 80#define SELFTYPE 34 81#define INDIRTYPE 35 82#define BUILTINTYPE 36 83#define PATSTYPE 37 84#define FILENAMETYPE 38 85#define LINETYPE 39 86#define REGEXPTYPE 40 87#define ESYSCMDTYPE 41 88#define TRACEONTYPE 42 89#define TRACEOFFTYPE 43 90#define FORMATTYPE 44 91 92#define BUILTIN_MARKER "__builtin_" 93 94#define TYPEMASK 63 /* Keep bits really corresponding to a type. */ 95#define RECDEF 256 /* Pure recursive def, don't expand it */ 96#define NOARGS 512 /* builtin needs no args */ 97#define NEEDARGS 1024 /* mark builtin that need args with this */ 98 99/* 100 * m4 special characters 101 */ 102 103#define ARGFLAG '$' 104#define LPAREN '(' 105#define RPAREN ')' 106#define LQUOTE '`' 107#define RQUOTE '\'' 108#define COMMA ',' 109#define SCOMMT '#' 110#define ECOMMT '\n' 111 112/* 113 * other important constants 114 */ 115 116#define EOS '\0' 117#define MAXINP 10 /* maximum include files */ 118#define MAXOUT 10 /* maximum # of diversions */ 119#define BUFSIZE 4096 /* starting size of pushback buffer */ 120#define INITSTACKMAX 4096 /* starting size of call stack */ 121#define STRSPMAX 4096 /* starting size of string space */ 122#define MAXTOK 512 /* maximum chars in a tokn */ 123#define MAXCCHARS 5 /* max size of comment/quote delim */ 124 125#define ALL 1 126#define TOP 0 127 128#define TRUE 1 129#define FALSE 0 130#define cycle for(;;) 131 132/* 133 * m4 data structures 134 */ 135 136typedef struct ndblock *ndptr; 137 138struct macro_definition { 139 struct macro_definition *next; 140 char *defn; /* definition.. */ 141 unsigned int type; /* type of the entry.. */ 142}; 143 144 145struct ndblock { /* hashtable structure */ 146 unsigned int builtin_type; 147 unsigned int trace_flags; 148 struct macro_definition *d; 149 char name[1]; /* entry name.. */ 150}; 151 152typedef union { /* stack structure */ 153 int sfra; /* frame entry */ 154 char *sstr; /* string entry */ 155} stae; 156 157struct input_file { 158 FILE *file; 159 char *name; 160 unsigned long lineno; 161 unsigned long synch_lineno; /* used for -s */ 162 int c; 163}; 164 165#define STORAGE_STRSPACE 0 166#define STORAGE_MACRO 1 167#define STORAGE_OTHER 2 168 169#define CURRENT_NAME (infile[ilevel].name) 170#define CURRENT_LINE (infile[ilevel].lineno) 171/* 172 * macros for readibility and/or speed 173 * 174 * gpbc() - get a possibly pushed-back character 175 * pushf() - push a call frame entry onto stack 176 * pushs() - push a string pointer onto stack 177 */ 178#define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) 179#define pushf(x) \ 180 do { \ 181 if (++sp == (int)STACKMAX) \ 182 enlarge_stack();\ 183 mstack[sp].sfra = (x); \ 184 sstack[sp] = STORAGE_OTHER; \ 185 } while (0) 186 187#define pushs(x) \ 188 do { \ 189 if (++sp == (int)STACKMAX) \ 190 enlarge_stack();\ 191 mstack[sp].sstr = (x); \ 192 sstack[sp] = STORAGE_STRSPACE; \ 193 } while (0) 194 195#define pushs1(x) \ 196 do { \ 197 if (++sp == (int)STACKMAX) \ 198 enlarge_stack();\ 199 mstack[sp].sstr = (x); \ 200 sstack[sp] = STORAGE_OTHER; \ 201 } while (0) 202 203#define pushdef(p) \ 204 do { \ 205 if (++sp == (int)STACKMAX) \ 206 enlarge_stack();\ 207 mstack[sp].sstr = macro_getdef(p)->defn;\ 208 sstack[sp] = STORAGE_MACRO; \ 209 } while (0) 210 211 212/* 213 * . . 214 * | . | <-- sp | . | 215 * +-------+ +-----+ 216 * | arg 3 ----------------------->| str | 217 * +-------+ | . | 218 * | arg 2 ---PREVEP-----+ . 219 * +-------+ | 220 * . | | | 221 * +-------+ | +-----+ 222 * | plev | PARLEV +-------->| str | 223 * +-------+ | . | 224 * | type | CALTYP . 225 * +-------+ 226 * | prcf ---PREVFP--+ 227 * +-------+ | 228 * | . | PREVSP | 229 * . | 230 * +-------+ | 231 * | <----------+ 232 * +-------+ 233 * 234 */ 235#define PARLEV (mstack[fp].sfra) 236#define CALTYP (mstack[fp-2].sfra) 237#define TRACESTATUS (mstack[fp-1].sfra) 238#define PREVEP (mstack[fp+3].sstr) 239#define PREVSP (fp-4) 240#define PREVFP (mstack[fp-3].sfra) 241