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 */ 39 40 #ifdef __GNUC__ 41 # define UNUSED __attribute__((__unused__)) 42 #else 43 # define UNUSED 44 #endif 45 46 #define MACRTYPE 1 47 #define DEFITYPE 2 48 #define EXPRTYPE 3 49 #define SUBSTYPE 4 50 #define IFELTYPE 5 51 #define LENGTYPE 6 52 #define CHNQTYPE 7 53 #define SYSCTYPE 8 54 #define UNDFTYPE 9 55 #define INCLTYPE 10 56 #define SINCTYPE 11 57 #define PASTTYPE 12 58 #define SPASTYPE 13 59 #define INCRTYPE 14 60 #define IFDFTYPE 15 61 #define PUSDTYPE 16 62 #define POPDTYPE 17 63 #define SHIFTYPE 18 64 #define DECRTYPE 19 65 #define DIVRTYPE 20 66 #define UNDVTYPE 21 67 #define DIVNTYPE 22 68 #define MKTMTYPE 23 69 #define ERRPTYPE 24 70 #define M4WRTYPE 25 71 #define TRNLTYPE 26 72 #define DNLNTYPE 27 73 #define DUMPTYPE 28 74 #define CHNCTYPE 29 75 #define INDXTYPE 30 76 #define SYSVTYPE 31 77 #define EXITTYPE 32 78 #define DEFNTYPE 33 79 #define SELFTYPE 34 80 #define INDIRTYPE 35 81 #define BUILTINTYPE 36 82 #define PATSTYPE 37 83 #define FILENAMETYPE 38 84 #define LINETYPE 39 85 #define REGEXPTYPE 40 86 #define ESYSCMDTYPE 41 87 #define TRACEONTYPE 42 88 #define TRACEOFFTYPE 43 89 #define FORMATTYPE 44 90 91 #define BUILTIN_MARKER "__builtin_" 92 93 #define TYPEMASK 63 /* Keep bits really corresponding to a type. */ 94 #define RECDEF 256 /* Pure recursive def, don't expand it */ 95 #define NOARGS 512 /* builtin needs no args */ 96 #define NEEDARGS 1024 /* mark builtin that need args with this */ 97 98 /* 99 * m4 special characters 100 */ 101 102 #define ARGFLAG '$' 103 #define LPAREN '(' 104 #define RPAREN ')' 105 #define LQUOTE '`' 106 #define RQUOTE '\'' 107 #define COMMA ',' 108 #define SCOMMT '#' 109 #define ECOMMT '\n' 110 111 /* 112 * other important constants 113 */ 114 115 #define EOS '\0' 116 #define MAXINP 10 /* maximum include files */ 117 #define MAXOUT 10 /* maximum # of diversions */ 118 #define BUFSIZE 4096 /* starting size of pushback buffer */ 119 #define INITSTACKMAX 4096 /* starting size of call stack */ 120 #define STRSPMAX 4096 /* starting size of string space */ 121 #define MAXTOK 512 /* maximum chars in a tokn */ 122 #define MAXCCHARS 5 /* max size of comment/quote delim */ 123 124 #define ALL 1 125 #define TOP 0 126 127 #define TRUE 1 128 #define FALSE 0 129 #define cycle for(;;) 130 131 /* 132 * m4 data structures 133 */ 134 135 typedef struct ndblock *ndptr; 136 137 struct macro_definition { 138 struct macro_definition *next; 139 char *defn; /* definition.. */ 140 unsigned int type; /* type of the entry.. */ 141 }; 142 143 144 struct ndblock { /* hashtable structure */ 145 unsigned int builtin_type; 146 unsigned int trace_flags; 147 struct macro_definition *d; 148 char name[1]; /* entry name.. */ 149 }; 150 151 typedef union { /* stack structure */ 152 int sfra; /* frame entry */ 153 char *sstr; /* string entry */ 154 } stae; 155 156 struct input_file { 157 FILE *file; 158 char *name; 159 unsigned long lineno; 160 unsigned long synch_lineno; /* used for -s */ 161 int c; 162 }; 163 164 #define STORAGE_STRSPACE 0 165 #define STORAGE_MACRO 1 166 #define STORAGE_OTHER 2 167 168 #define CURRENT_NAME (infile[ilevel].name) 169 #define CURRENT_LINE (infile[ilevel].lineno) 170 /* 171 * macros for readibility and/or speed 172 * 173 * gpbc() - get a possibly pushed-back character 174 * pushf() - push a call frame entry onto stack 175 * pushs() - push a string pointer onto stack 176 */ 177 #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) 178 #define pushf(x) \ 179 do { \ 180 if (++sp == (int)STACKMAX) \ 181 enlarge_stack();\ 182 mstack[sp].sfra = (x); \ 183 sstack[sp] = STORAGE_OTHER; \ 184 } while (0) 185 186 #define pushs(x) \ 187 do { \ 188 if (++sp == (int)STACKMAX) \ 189 enlarge_stack();\ 190 mstack[sp].sstr = (x); \ 191 sstack[sp] = STORAGE_STRSPACE; \ 192 } while (0) 193 194 #define pushs1(x) \ 195 do { \ 196 if (++sp == (int)STACKMAX) \ 197 enlarge_stack();\ 198 mstack[sp].sstr = (x); \ 199 sstack[sp] = STORAGE_OTHER; \ 200 } while (0) 201 202 #define pushdef(p) \ 203 do { \ 204 if (++sp == (int)STACKMAX) \ 205 enlarge_stack();\ 206 mstack[sp].sstr = macro_getdef(p)->defn;\ 207 sstack[sp] = STORAGE_MACRO; \ 208 } while (0) 209 210 211 /* 212 * . . 213 * | . | <-- sp | . | 214 * +-------+ +-----+ 215 * | arg 3 ----------------------->| str | 216 * +-------+ | . | 217 * | arg 2 ---PREVEP-----+ . 218 * +-------+ | 219 * . | | | 220 * +-------+ | +-----+ 221 * | plev | PARLEV +-------->| str | 222 * +-------+ | . | 223 * | type | CALTYP . 224 * +-------+ 225 * | prcf ---PREVFP--+ 226 * +-------+ | 227 * | . | PREVSP | 228 * . | 229 * +-------+ | 230 * | <----------+ 231 * +-------+ 232 * 233 */ 234 #define PARLEV (mstack[fp].sfra) 235 #define CALTYP (mstack[fp-2].sfra) 236 #define TRACESTATUS (mstack[fp-1].sfra) 237 #define PREVEP (mstack[fp+3].sstr) 238 #define PREVSP (fp-4) 239 #define PREVFP (mstack[fp-3].sfra) 240