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 38 #ifdef __GNUC__ 39 # define UNUSED __attribute__((__unused__)) 40 #else 41 # define UNUSED 42 #endif 43 44 #define MACRTYPE 1 45 #define DEFITYPE 2 46 #define EXPRTYPE 3 47 #define SUBSTYPE 4 48 #define IFELTYPE 5 49 #define LENGTYPE 6 50 #define CHNQTYPE 7 51 #define SYSCTYPE 8 52 #define UNDFTYPE 9 53 #define INCLTYPE 10 54 #define SINCTYPE 11 55 #define PASTTYPE 12 56 #define SPASTYPE 13 57 #define INCRTYPE 14 58 #define IFDFTYPE 15 59 #define PUSDTYPE 16 60 #define POPDTYPE 17 61 #define SHIFTYPE 18 62 #define DECRTYPE 19 63 #define DIVRTYPE 20 64 #define UNDVTYPE 21 65 #define DIVNTYPE 22 66 #define MKTMTYPE 23 67 #define ERRPTYPE 24 68 #define M4WRTYPE 25 69 #define TRNLTYPE 26 70 #define DNLNTYPE 27 71 #define DUMPTYPE 28 72 #define CHNCTYPE 29 73 #define INDXTYPE 30 74 #define SYSVTYPE 31 75 #define EXITTYPE 32 76 #define DEFNTYPE 33 77 #define SELFTYPE 34 78 #define INDIRTYPE 35 79 #define BUILTINTYPE 36 80 #define PATSTYPE 37 81 #define FILENAMETYPE 38 82 #define LINETYPE 39 83 #define REGEXPTYPE 40 84 #define ESYSCMDTYPE 41 85 #define TRACEONTYPE 42 86 #define TRACEOFFTYPE 43 87 #define FORMATTYPE 44 88 89 #define BUILTIN_MARKER "__builtin_" 90 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 */ 95 96 /* 97 * m4 special characters 98 */ 99 100 #define ARGFLAG '$' 101 #define LPAREN '(' 102 #define RPAREN ')' 103 #define LQUOTE '`' 104 #define RQUOTE '\'' 105 #define COMMA ',' 106 #define SCOMMT '#' 107 #define ECOMMT '\n' 108 109 /* 110 * other important constants 111 */ 112 113 #define EOS '\0' 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 */ 121 122 #define ALL 1 123 #define TOP 0 124 125 #define TRUE 1 126 #define FALSE 0 127 #define cycle for(;;) 128 129 /* 130 * m4 data structures 131 */ 132 133 typedef struct ndblock *ndptr; 134 135 struct macro_definition { 136 struct macro_definition *next; 137 char *defn; /* definition.. */ 138 unsigned int type; /* type of the entry.. */ 139 }; 140 141 142 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.. */ 147 }; 148 149 typedef union { /* stack structure */ 150 int sfra; /* frame entry */ 151 char *sstr; /* string entry */ 152 } stae; 153 154 struct input_file { 155 FILE *file; 156 char *name; 157 unsigned long lineno; 158 unsigned long synch_lineno; /* used for -s */ 159 int c; 160 }; 161 162 #define STORAGE_STRSPACE 0 163 #define STORAGE_MACRO 1 164 #define STORAGE_OTHER 2 165 166 #define CURRENT_NAME (infile[ilevel].name) 167 #define CURRENT_LINE (infile[ilevel].lineno) 168 /* 169 * macros for readibility and/or speed 170 * 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 174 */ 175 #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) 176 #define pushf(x) \ 177 do { \ 178 if (++sp == (int)STACKMAX) \ 179 enlarge_stack();\ 180 mstack[sp].sfra = (x); \ 181 sstack[sp] = STORAGE_OTHER; \ 182 } while (0) 183 184 #define pushs(x) \ 185 do { \ 186 if (++sp == (int)STACKMAX) \ 187 enlarge_stack();\ 188 mstack[sp].sstr = (x); \ 189 sstack[sp] = STORAGE_STRSPACE; \ 190 } while (0) 191 192 #define pushs1(x) \ 193 do { \ 194 if (++sp == (int)STACKMAX) \ 195 enlarge_stack();\ 196 mstack[sp].sstr = (x); \ 197 sstack[sp] = STORAGE_OTHER; \ 198 } while (0) 199 200 #define pushdef(p) \ 201 do { \ 202 if (++sp == (int)STACKMAX) \ 203 enlarge_stack();\ 204 mstack[sp].sstr = macro_getdef(p)->defn;\ 205 sstack[sp] = STORAGE_MACRO; \ 206 } while (0) 207 208 209 /* 210 * . . 211 * | . | <-- sp | . | 212 * +-------+ +-----+ 213 * | arg 3 ----------------------->| str | 214 * +-------+ | . | 215 * | arg 2 ---PREVEP-----+ . 216 * +-------+ | 217 * . | | | 218 * +-------+ | +-----+ 219 * | plev | PARLEV +-------->| str | 220 * +-------+ | . | 221 * | type | CALTYP . 222 * +-------+ 223 * | prcf ---PREVFP--+ 224 * +-------+ | 225 * | . | PREVSP | 226 * . | 227 * +-------+ | 228 * | <----------+ 229 * +-------+ 230 * 231 */ 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) 238