emit2.c revision 1.23
1 /* $NetBSD: emit2.c,v 1.23 2021/08/29 10:13:02 rillig 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 1.23 2021/08/29 10:13:02 rillig 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_is_enum) 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 #ifdef INT128_SIZE 74 case INT128: t = 'J'; s = '\0'; break; 75 case UINT128: t = 'J'; s = 'u'; break; 76 #endif 77 case FLOAT: t = 'D'; s = 's'; break; 78 case DOUBLE: t = 'D'; s = '\0'; break; 79 case LDOUBLE: t = 'D'; s = 'l'; break; 80 case VOID: t = 'V'; s = '\0'; break; 81 case PTR: t = 'P'; s = '\0'; break; 82 case ARRAY: t = 'A'; s = '\0'; break; 83 case ENUM: t = 'T'; s = 'e'; break; 84 case STRUCT: t = 'T'; s = 's'; break; 85 case UNION: t = 'T'; s = 'u'; break; 86 case FCOMPLEX: t = 'X'; s = 's'; break; 87 case DCOMPLEX: t = 'X'; s = '\0'; break; 88 case LCOMPLEX: t = 'X'; s = 'l'; break; 89 case FUNC: 90 if (tp->t_args != NULL && !tp->t_proto) { 91 t = 'f'; 92 } else { 93 t = 'F'; 94 } 95 s = '\0'; 96 break; 97 default: 98 errx(1, "internal error: outtype() 1"); 99 } 100 if (tp->t_const) 101 outchar('c'); 102 if (tp->t_volatile) 103 outchar('v'); 104 if (s != '\0') 105 outchar(s); 106 outchar(t); 107 if (ts == ARRAY) { 108 outint(tp->t_dim); 109 } else if (ts == ENUM || ts == STRUCT || ts == UNION) { 110 if (tp->t_istag) { 111 outint(1); 112 outname(tp->t_tag->h_name); 113 } else if (tp->t_istynam) { 114 outint(2); 115 outname(tp->t_tynam->h_name); 116 } else if (tp->t_isuniqpos) { 117 outint(3); 118 outint(tp->t_uniqpos.p_line); 119 outchar('.'); 120 outint(tp->t_uniqpos.p_file); 121 outchar('.'); 122 outint(tp->t_uniqpos.p_uniq); 123 } else 124 errx(1, "internal error: outtype() 2"); 125 } else if (ts == FUNC && tp->t_args != NULL) { 126 na = 0; 127 for (ap = tp->t_args; *ap != NULL; ap++) 128 na++; 129 if (tp->t_vararg) 130 na++; 131 outint(na); 132 for (ap = tp->t_args; *ap != NULL; ap++) 133 outtype(*ap); 134 if (tp->t_vararg) 135 outchar('E'); 136 } 137 tp = tp->t_subt; 138 } 139 } 140 141 /* 142 * Write a definition. 143 */ 144 static void 145 outdef(hte_t *hte, sym_t *sym) 146 { 147 148 /* reset output buffer */ 149 outclr(); 150 151 /* line number in C source file */ 152 outint(0); 153 154 /* this is a definition */ 155 outchar('d'); 156 157 /* index of file where symbol was defined and line number of def. */ 158 outint(0); 159 outchar('.'); 160 outint(0); 161 162 /* flags */ 163 if (sym->s_check_only_first_args) { 164 outchar('v'); 165 outint(sym->s_check_num_args); 166 } 167 if (sym->s_scanflike) { 168 outchar('S'); 169 outint(sym->s_scanflike_arg); 170 } 171 if (sym->s_printflike) { 172 outchar('P'); 173 outint(sym->s_printflike_arg); 174 } 175 /* definition or tentative definition */ 176 outchar(sym->s_def == DEF ? 'd' : 't'); 177 if (TP(sym->s_type)->t_tspec == FUNC) { 178 if (sym->s_function_has_return_value) 179 outchar('r'); 180 if (sym->s_old_style_function) 181 outchar('o'); 182 } 183 outchar('u'); /* used (no warning if not used) */ 184 185 /* name */ 186 outname(hte->h_name); 187 188 /* type */ 189 outtype(TP(sym->s_type)); 190 } 191 192 /* 193 * Write the first definition of a name into the lint library. 194 */ 195 static void 196 dumpname(hte_t *hte) 197 { 198 sym_t *sym, *def; 199 200 /* static and undefined symbols are not written */ 201 if (hte->h_static || !hte->h_def) 202 return; 203 204 /* 205 * If there is a definition, write it. Otherwise write a tentative 206 * definition. This is necessary because more than one tentative 207 * definition is allowed (except with sflag). 208 */ 209 def = NULL; 210 for (sym = hte->h_syms; sym != NULL; sym = sym->s_next) { 211 if (sym->s_def == DEF) { 212 def = sym; 213 break; 214 } 215 if (sym->s_def == TDEF && def == NULL) 216 def = sym; 217 } 218 if (def == NULL) 219 errx(1, "internal error: dumpname() %s", hte->h_name); 220 221 outdef(hte, def); 222 } 223 224 /* 225 * Write a new lint library. 226 */ 227 void 228 outlib(const char *name) 229 { 230 /* Open of output file and initialization of the output buffer */ 231 outopen(name); 232 233 /* write name of lint library */ 234 outsrc(name); 235 236 /* name of lint lib has index 0 */ 237 outclr(); 238 outint(0); 239 outchar('s'); 240 outstrg(name); 241 242 /* 243 * print the names of all files references by unnamed 244 * struct/union/enum declarations. 245 */ 246 outfiles(); 247 248 /* write all definitions with external linkage */ 249 symtab_forall_sorted(dumpname); 250 251 /* close the output */ 252 outclose(); 253 } 254 255 /* 256 * Write out the name of a file referenced by a type. 257 */ 258 struct outflist { 259 short ofl_num; 260 struct outflist *ofl_next; 261 }; 262 static struct outflist *outflist; 263 264 int 265 addoutfile(short num) 266 { 267 struct outflist *ofl, **pofl; 268 int i; 269 270 ofl = outflist; 271 pofl = &outflist; 272 i = 1; /* library is 0 */ 273 274 while (ofl != NULL) { 275 if (ofl->ofl_num == num) 276 break; 277 278 pofl = &ofl->ofl_next; 279 ofl = ofl->ofl_next; 280 i++; 281 } 282 283 if (ofl == NULL) { 284 ofl = *pofl = xmalloc(sizeof(**pofl)); 285 ofl->ofl_num = num; 286 ofl->ofl_next = NULL; 287 } 288 return i; 289 } 290 291 static void 292 outfiles(void) 293 { 294 struct outflist *ofl; 295 int i; 296 297 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 298 /* reset output buffer */ 299 outclr(); 300 301 outint(i); 302 outchar('s'); 303 outstrg(fnames[ofl->ofl_num]); 304 } 305 } 306
Indexes created Sun Sep 28 16:09:52 GMT 2025