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 */ 135 136 typedef struct ndblock *ndptr; 137 138 struct macro_definition { 139 struct macro_definition *next; 140 char *defn; /* definition.. */ 141 unsigned int type; /* type of the entry.. */ 142 }; 143 144 145 struct 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 }; 151 152 typedef union { /* stack structure */ 153 int sfra; /* frame entry */ 154 char *sstr; /* string entry */ 155 } stae; 156 157 struct 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