emit2.c revision 1.10
1 /* $NetBSD: emit2.c,v 1.10 2004/09/12 08:58:52 yamt 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 #if defined(__RCSID) && !defined(lint) 37 __RCSID("$NetBSD: emit2.c,v 1.10 2004/09/12 08:58:52 yamt Exp $"); 38 #endif 39 40 #include "lint2.h" 41 42 static void outtype(type_t *); 43 static void outdef(hte_t *, sym_t *); 44 static void dumpname(hte_t *); 45 static void outfiles(void); 46 47 /* 48 * Write type into the output buffer. 49 */ 50 static void 51 outtype(type_t *tp) 52 { 53 int t, s, na; 54 tspec_t ts; 55 type_t **ap; 56 57 while (tp != NULL) { 58 if ((ts = tp->t_tspec) == INT && tp->t_isenum) 59 ts = ENUM; 60 switch (ts) { 61 case BOOL: t = 'B'; s = '\0'; break; 62 case CHAR: t = 'C'; s = '\0'; break; 63 case SCHAR: t = 'C'; s = 's'; break; 64 case UCHAR: t = 'C'; s = 'u'; break; 65 case SHORT: t = 'S'; s = '\0'; break; 66 case USHORT: t = 'S'; s = 'u'; break; 67 case INT: t = 'I'; s = '\0'; break; 68 case UINT: t = 'I'; s = 'u'; break; 69 case LONG: t = 'L'; s = '\0'; break; 70 case ULONG: t = 'L'; s = 'u'; break; 71 case QUAD: t = 'Q'; s = '\0'; break; 72 case UQUAD: t = 'Q'; s = 'u'; break; 73 case FLOAT: t = 'D'; s = 's'; break; 74 case DOUBLE: t = 'D'; s = '\0'; break; 75 case LDOUBLE: t = 'D'; s = 'l'; break; 76 case VOID: t = 'V'; s = '\0'; break; 77 case PTR: t = 'P'; s = '\0'; break; 78 case ARRAY: t = 'A'; s = '\0'; break; 79 case ENUM: t = 'T'; s = 'e'; break; 80 case STRUCT: t = 'T'; s = 's'; break; 81 case UNION: t = 'T'; s = 'u'; break; 82 case FUNC: 83 if (tp->t_args != NULL && !tp->t_proto) { 84 t = 'f'; 85 } else { 86 t = 'F'; 87 } 88 s = '\0'; 89 break; 90 default: 91 errx(1, "internal error: outtype() 1"); 92 } 93 if (tp->t_const) 94 outchar('c'); 95 if (tp->t_volatile) 96 outchar('v'); 97 if (s != '\0') 98 outchar(s); 99 outchar(t); 100 if (ts == ARRAY) { 101 outint(tp->t_dim); 102 } else if (ts == ENUM || ts == STRUCT || ts == UNION) { 103 if (tp->t_istag) { 104 outint(1); 105 outname(tp->t_tag->h_name); 106 } else if (tp->t_istynam) { 107 outint(2); 108 outname(tp->t_tynam->h_name); 109 } else if (tp->t_isuniqpos) { 110 outint(3); 111 outint(tp->t_uniqpos.p_line); 112 outchar('.'); 113 outint(tp->t_uniqpos.p_file); 114 outchar('.'); 115 outint(tp->t_uniqpos.p_uniq); 116 } else 117 errx(1, "internal error: outtype() 2"); 118 } else if (ts == FUNC && tp->t_args != NULL) { 119 na = 0; 120 for (ap = tp->t_args; *ap != NULL; ap++) 121 na++; 122 if (tp->t_vararg) 123 na++; 124 outint(na); 125 for (ap = tp->t_args; *ap != NULL; ap++) 126 outtype(*ap); 127 if (tp->t_vararg) 128 outchar('E'); 129 } 130 tp = tp->t_subt; 131 } 132 } 133 134 /* 135 * Write a definition. 136 */ 137 static void 138 outdef(hte_t *hte, sym_t *sym) 139 { 140 141 /* reset output buffer */ 142 outclr(); 143 144 /* line number in C source file */ 145 outint(0); 146 147 /* this is a definition */ 148 outchar('d'); 149 150 /* index of file where symbol was defined and line number of def. */ 151 outint(0); 152 outchar('.'); 153 outint(0); 154 155 /* flags */ 156 if (sym->s_va) { 157 outchar('v'); /* varargs */ 158 outint(sym->s_nva); 159 } 160 if (sym->s_scfl) { 161 outchar('S'); /* scanflike */ 162 outint(sym->s_nscfl); 163 } 164 if (sym->s_prfl) { 165 outchar('P'); /* printflike */ 166 outint(sym->s_nprfl); 167 } 168 /* definition or tentative definition */ 169 outchar(sym->s_def == DEF ? 'd' : 't'); 170 if (TP(sym->s_type)->t_tspec == FUNC) { 171 if (sym->s_rval) 172 outchar('r'); /* fkt. has return value */ 173 if (sym->s_osdef) 174 outchar('o'); /* old style definition */ 175 } 176 outchar('u'); /* used (no warning if not used) */ 177 178 /* name */ 179 outname(hte->h_name); 180 181 /* type */ 182 outtype(TP(sym->s_type)); 183 } 184 185 /* 186 * Write the first definition of a name into the lint library. 187 */ 188 static void 189 dumpname(hte_t *hte) 190 { 191 sym_t *sym, *def; 192 193 /* static and undefined symbols are not written */ 194 if (hte->h_static || !hte->h_def) 195 return; 196 197 /* 198 * If there is a definition, write it. Otherwise write a tentative 199 * definition. This is necessary because more than one tentative 200 * definition is allowed (except with sflag). 201 */ 202 def = NULL; 203 for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) { 204 if (sym->s_def == DEF) { 205 def = sym; 206 break; 207 } 208 if (sym->s_def == TDEF && def == NULL) 209 def = sym; 210 } 211 if (def == NULL) 212 errx(1, "internal error: dumpname() %s", hte->h_name); 213 214 outdef(hte, def); 215 } 216 217 /* 218 * Write a new lint library. 219 */ 220 void 221 outlib(const char *name) 222 { 223 /* Open of output file and initialisation of the output buffer */ 224 outopen(name); 225 226 /* write name of lint library */ 227 outsrc(name); 228 229 /* name of lint lib has index 0 */ 230 outclr(); 231 outint(0); 232 outchar('s'); 233 outstrg(name); 234 235 /* 236 * print the names of all files references by unnamed 237 * struct/union/enum declarations. 238 */ 239 outfiles(); 240 241 /* write all definitions with external linkage */ 242 forall(dumpname); 243 244 /* close the output */ 245 outclose(); 246 } 247 248 /* 249 * Write out the name of a file referenced by a type. 250 */ 251 struct outflist { 252 short ofl_num; 253 struct outflist *ofl_next; 254 }; 255 static struct outflist *outflist; 256 257 int 258 addoutfile(short num) 259 { 260 struct outflist *ofl, **pofl; 261 int i; 262 263 ofl = outflist; 264 pofl = &outflist; 265 i = 1; /* library is 0 */ 266 267 while (ofl != NULL) { 268 if (ofl->ofl_num == num) 269 break; 270 271 pofl = &ofl->ofl_next; 272 ofl = ofl->ofl_next; 273 i++; 274 } 275 276 if (ofl == NULL) { 277 ofl = *pofl = xmalloc(sizeof (struct outflist)); 278 ofl->ofl_num = num; 279 ofl->ofl_next = NULL; 280 } 281 return (i); 282 } 283 284 static void 285 outfiles(void) 286 { 287 struct outflist *ofl; 288 int i; 289 290 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 291 /* reset output buffer */ 292 outclr(); 293 294 outint(i); 295 outchar('s'); 296 outstrg(fnames[ofl->ofl_num]); 297 } 298 } 299
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