emit2.c revision 1.6
1 /* $NetBSD: emit2.c,v 1.6 2001/05/28 12:40:38 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved. 5 * Copyright (c) 1994, 1995 Jochen Pohl 6 * All Rights Reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Jochen Pohl for 19 * The NetBSD Project. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 __RCSID("$NetBSD: emit2.c,v 1.6 2001/05/28 12:40:38 lukem Exp $"); 38 #endif 39 40 #include <err.h> 41 42 #include "lint2.h" 43 44 static void outtype(type_t *); 45 static void outdef(hte_t *, sym_t *); 46 static void dumpname(hte_t *); 47 static void outfiles(void); 48 49 /* 50 * Write type into the output buffer. 51 */ 52 static void 53 outtype(type_t *tp) 54 { 55 int t, s, na; 56 tspec_t ts; 57 type_t **ap; 58 59 while (tp != NULL) { 60 if ((ts = tp->t_tspec) == INT && tp->t_isenum) 61 ts = ENUM; 62 switch (ts) { 63 case CHAR: t = 'C'; s = '\0'; break; 64 case SCHAR: t = 'C'; s = 's'; break; 65 case UCHAR: t = 'C'; s = 'u'; break; 66 case SHORT: t = 'S'; s = '\0'; break; 67 case USHORT: t = 'S'; s = 'u'; break; 68 case INT: t = 'I'; s = '\0'; break; 69 case UINT: t = 'I'; s = 'u'; break; 70 case LONG: t = 'L'; s = '\0'; break; 71 case ULONG: t = 'L'; s = 'u'; break; 72 case QUAD: t = 'Q'; s = '\0'; break; 73 case UQUAD: t = 'Q'; s = 'u'; break; 74 case FLOAT: t = 'D'; s = 's'; break; 75 case DOUBLE: t = 'D'; s = '\0'; break; 76 case LDOUBLE: t = 'D'; s = 'l'; break; 77 case VOID: t = 'V'; s = '\0'; break; 78 case PTR: t = 'P'; s = '\0'; break; 79 case ARRAY: t = 'A'; s = '\0'; break; 80 case ENUM: t = 'T'; s = 'e'; break; 81 case STRUCT: t = 'T'; s = 's'; break; 82 case UNION: t = 'T'; s = 'u'; break; 83 case FUNC: 84 if (tp->t_args != NULL && !tp->t_proto) { 85 t = 'f'; 86 } else { 87 t = 'F'; 88 } 89 s = '\0'; 90 break; 91 default: 92 errx(1, "internal error: outtype() 1"); 93 } 94 if (tp->t_const) 95 outchar('c'); 96 if (tp->t_volatile) 97 outchar('v'); 98 if (s != '\0') 99 outchar(s); 100 outchar(t); 101 if (ts == ARRAY) { 102 outint(tp->t_dim); 103 } else if (ts == ENUM || ts == STRUCT || ts == UNION) { 104 if (tp->t_istag) { 105 outint(1); 106 outname(tp->t_tag->h_name); 107 } else if (tp->t_istynam) { 108 outint(2); 109 outname(tp->t_tynam->h_name); 110 } else if (tp->t_isuniqpos) { 111 outint(3); 112 outint(tp->t_uniqpos.p_line); 113 outchar('.'); 114 outint(tp->t_uniqpos.p_file); 115 outchar('.'); 116 outint(tp->t_uniqpos.p_uniq); 117 } else 118 errx(1, "internal error: outtype() 2"); 119 } else if (ts == FUNC && tp->t_args != NULL) { 120 na = 0; 121 for (ap = tp->t_args; *ap != NULL; ap++) 122 na++; 123 if (tp->t_vararg) 124 na++; 125 outint(na); 126 for (ap = tp->t_args; *ap != NULL; ap++) 127 outtype(*ap); 128 if (tp->t_vararg) 129 outchar('E'); 130 } 131 tp = tp->t_subt; 132 } 133 } 134 135 /* 136 * Write a definition. 137 */ 138 static void 139 outdef(hte_t *hte, sym_t *sym) 140 { 141 142 /* reset output buffer */ 143 outclr(); 144 145 /* line number in C source file */ 146 outint(0); 147 148 /* this is a definition */ 149 outchar('d'); 150 151 /* index of file where symbol was defined and line number of def. */ 152 outint(0); 153 outchar('.'); 154 outint(0); 155 156 /* flags */ 157 if (sym->s_va) { 158 outchar('v'); /* varargs */ 159 outint(sym->s_nva); 160 } 161 if (sym->s_scfl) { 162 outchar('S'); /* scanflike */ 163 outint(sym->s_nscfl); 164 } 165 if (sym->s_prfl) { 166 outchar('P'); /* printflike */ 167 outint(sym->s_nprfl); 168 } 169 /* definition or tentative definition */ 170 outchar(sym->s_def == DEF ? 'd' : 't'); 171 if (TP(sym->s_type)->t_tspec == FUNC) { 172 if (sym->s_rval) 173 outchar('r'); /* fkt. has return value */ 174 if (sym->s_osdef) 175 outchar('o'); /* old style definition */ 176 } 177 outchar('u'); /* used (no warning if not used) */ 178 179 /* name */ 180 outname(hte->h_name); 181 182 /* type */ 183 outtype(TP(sym->s_type)); 184 } 185 186 /* 187 * Write the first definition of a name into the lint library. 188 */ 189 static void 190 dumpname(hte_t *hte) 191 { 192 sym_t *sym, *def; 193 194 /* static and undefined symbols are not written */ 195 if (hte->h_static || !hte->h_def) 196 return; 197 198 /* 199 * If there is a definition, write it. Otherwise write a tentative 200 * definition. This is neccessary because more than one tentative 201 * definition is allowed (except with sflag). 202 */ 203 def = NULL; 204 for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) { 205 if (sym->s_def == DEF) { 206 def = sym; 207 break; 208 } 209 if (sym->s_def == TDEF && def == NULL) 210 def = sym; 211 } 212 if (def == NULL) 213 errx(1, "internal error: dumpname() %s", hte->h_name); 214 215 outdef(hte, def); 216 } 217 218 /* 219 * Write a new lint library. 220 */ 221 void 222 outlib(const char *name) 223 { 224 /* Open of output file and initialisation of the output buffer */ 225 outopen(name); 226 227 /* write name of lint library */ 228 outsrc(name); 229 230 /* name of lint lib has index 0 */ 231 outclr(); 232 outint(0); 233 outchar('s'); 234 outstrg(name); 235 236 /* 237 * print the names of all files references by unnamed 238 * struct/union/enum declarations. 239 */ 240 outfiles(); 241 242 /* write all definitions with external linkage */ 243 forall(dumpname); 244 245 /* close the output */ 246 outclose(); 247 } 248 249 /* 250 * Write out the name of a file referenced by a type. 251 */ 252 struct outflist { 253 short ofl_num; 254 struct outflist *ofl_next; 255 }; 256 static struct outflist *outflist; 257 258 int 259 addoutfile(short num) 260 { 261 struct outflist *ofl, **pofl; 262 int i; 263 264 ofl = outflist; 265 pofl = &outflist; 266 i = 1; /* library is 0 */ 267 268 while (ofl != NULL) { 269 if (ofl->ofl_num == num) 270 break; 271 272 pofl = &ofl->ofl_next; 273 ofl = ofl->ofl_next; 274 i++; 275 } 276 277 if (ofl == NULL) { 278 ofl = *pofl = xmalloc(sizeof (struct outflist)); 279 ofl->ofl_num = num; 280 ofl->ofl_next = NULL; 281 } 282 return (i); 283 } 284 285 static void 286 outfiles(void) 287 { 288 struct outflist *ofl; 289 int i; 290 291 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 292 /* reset output buffer */ 293 outclr(); 294 295 outint(i); 296 outchar('s'); 297 outstrg(fnames[ofl->ofl_num]); 298 } 299 } 300
Indexes created Sat Sep 27 22:09:54 GMT 2025