emit2.c revision 1.3
1 /* $NetBSD: emit2.c,v 1.3 1996/12/22 11:31:08 cgd 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 #ifndef lint 36 static char rcsid[] = "$NetBSD: emit2.c,v 1.3 1996/12/22 11:31:08 cgd Exp $"; 37 #endif 38 39 #include <err.h> 40 41 #include "lint2.h" 42 43 static void outtype __P((type_t *)); 44 static void outdef __P((hte_t *, sym_t *)); 45 static void dumpname __P((hte_t *)); 46 static void outfiles __P(()); 47 48 /* 49 * Write type into the output buffer. 50 */ 51 static void 52 outtype(tp) 53 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, sym) 140 hte_t *hte; 141 sym_t *sym; 142 { 143 /* reset output buffer */ 144 outclr(); 145 146 /* line number in C source file */ 147 outint(0); 148 149 /* this is a definition */ 150 outchar('d'); 151 152 /* index of file where symbol was defined and line number of def. */ 153 outint(0); 154 outchar('.'); 155 outint(0); 156 157 /* flags */ 158 if (sym->s_va) { 159 outchar('v'); /* varargs */ 160 outint(sym->s_nva); 161 } 162 if (sym->s_scfl) { 163 outchar('S'); /* scanflike */ 164 outint(sym->s_nscfl); 165 } 166 if (sym->s_prfl) { 167 outchar('P'); /* printflike */ 168 outint(sym->s_nprfl); 169 } 170 /* definition or tentative definition */ 171 outchar(sym->s_def == DEF ? 'd' : 't'); 172 if (TP(sym->s_type)->t_tspec == FUNC) { 173 if (sym->s_rval) 174 outchar('r'); /* fkt. has return value */ 175 if (sym->s_osdef) 176 outchar('o'); /* old style definition */ 177 } 178 outchar('u'); /* used (no warning if not used) */ 179 180 /* name */ 181 outname(hte->h_name); 182 183 /* type */ 184 outtype(TP(sym->s_type)); 185 } 186 187 /* 188 * Write the first definition of a name into the lint library. 189 */ 190 static void 191 dumpname(hte) 192 hte_t *hte; 193 { 194 sym_t *sym, *def; 195 196 /* static and undefined symbols are not written */ 197 if (hte->h_static || !hte->h_def) 198 return; 199 200 /* 201 * If there is a definition, write it. Otherwise write a tentative 202 * definition. This is neccessary because more than one tentative 203 * definition is allowed (except with sflag). 204 */ 205 def = NULL; 206 for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) { 207 if (sym->s_def == DEF) { 208 def = sym; 209 break; 210 } 211 if (sym->s_def == TDEF && def == NULL) 212 def = sym; 213 } 214 if (def == NULL) 215 errx(1, "internal error: dumpname() %s", hte->h_name); 216 217 outdef(hte, def); 218 } 219 220 /* 221 * Write a new lint library. 222 */ 223 void 224 outlib(name) 225 const char *name; 226 { 227 /* Open of output file and initialisation of the output buffer */ 228 outopen(name); 229 230 /* write name of lint library */ 231 outsrc(name); 232 233 /* name of lint lib has index 0 */ 234 outclr(); 235 outint(0); 236 outchar('s'); 237 outstrg(name); 238 239 /* 240 * print the names of all files references by unnamed 241 * struct/union/enum declarations. 242 */ 243 outfiles(); 244 245 /* write all definitions with external linkage */ 246 forall(dumpname); 247 248 /* close the output */ 249 outclose(); 250 } 251 252 /* 253 * Write out the name of a file referenced by a type. 254 */ 255 struct outflist { 256 short ofl_num; 257 struct outflist *ofl_next; 258 }; 259 static struct outflist *outflist; 260 261 int 262 addoutfile(num) 263 short num; 264 { 265 struct outflist *ofl, **pofl; 266 int i; 267 268 ofl = outflist; 269 pofl = &outflist; 270 i = 1; /* library is 0 */ 271 272 while (ofl != NULL) { 273 if (ofl->ofl_num == num) 274 break; 275 276 pofl = &ofl->ofl_next; 277 ofl = ofl->ofl_next; 278 i++; 279 } 280 281 if (ofl == NULL) { 282 ofl = *pofl = xmalloc(sizeof (struct outflist)); 283 ofl->ofl_num = num; 284 ofl->ofl_next = NULL; 285 } 286 return (i); 287 } 288 289 void 290 outfiles() 291 { 292 struct outflist *ofl; 293 int i; 294 295 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 296 /* reset output buffer */ 297 outclr(); 298 299 outint(i); 300 outchar('s'); 301 outstrg(fnames[ofl->ofl_num]); 302 } 303 } 304
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