emit2.c revision 1.25
1 /* $NetBSD: emit2.c,v 1.25 2021/09/04 18:49:33 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 1.25 2021/09/04 18:49:33 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 char t, s; 54 int na; 55 tspec_t ts; 56 type_t **ap; 57 58 #ifdef INT128_SIZE 59 static const char tt[NTSPEC] = "???BCCCSSIILLQQJJDDDVTTTPAF?XXX"; 60 static const char ss[NTSPEC] = "??? su u u u u us l sue ?s l"; 61 #else 62 static const char tt[NTSPEC] = "???BCCCSSIILLQQDDDVTTTPAF?XXX"; 63 static const char ss[NTSPEC] = "??? su u u u us l sue ?s l"; 64 #endif 65 66 while (tp != NULL) { 67 if ((ts = tp->t_tspec) == INT && tp->t_is_enum) 68 ts = ENUM; 69 t = tt[ts]; 70 s = ss[ts]; 71 if (!ch_isupper(t)) 72 errx(1, "internal error: outtype(%d)", ts); 73 if (ts == FUNC && tp->t_args != NULL && !tp->t_proto) 74 t = 'f'; 75 if (tp->t_const) 76 outchar('c'); 77 if (tp->t_volatile) 78 outchar('v'); 79 if (s != ' ') 80 outchar(s); 81 outchar(t); 82 if (ts == ARRAY) { 83 outint(tp->t_dim); 84 } else if (ts == ENUM || ts == STRUCT || ts == UNION) { 85 if (tp->t_istag) { 86 outint(1); 87 outname(tp->t_tag->h_name); 88 } else if (tp->t_istynam) { 89 outint(2); 90 outname(tp->t_tynam->h_name); 91 } else if (tp->t_isuniqpos) { 92 outint(3); 93 outint(tp->t_uniqpos.p_line); 94 outchar('.'); 95 outint(tp->t_uniqpos.p_file); 96 outchar('.'); 97 outint(tp->t_uniqpos.p_uniq); 98 } else 99 errx(1, "internal error: outtype() 2"); 100 } else if (ts == FUNC && tp->t_args != NULL) { 101 na = 0; 102 for (ap = tp->t_args; *ap != NULL; ap++) 103 na++; 104 if (tp->t_vararg) 105 na++; 106 outint(na); 107 for (ap = tp->t_args; *ap != NULL; ap++) 108 outtype(*ap); 109 if (tp->t_vararg) 110 outchar('E'); 111 } 112 tp = tp->t_subt; 113 } 114 } 115 116 /* 117 * Write a definition. 118 */ 119 static void 120 outdef(hte_t *hte, sym_t *sym) 121 { 122 123 /* reset output buffer */ 124 outclr(); 125 126 /* line number in C source file */ 127 outint(0); 128 129 /* this is a definition */ 130 outchar('d'); 131 132 /* index of file where symbol was defined and line number of def. */ 133 outint(0); 134 outchar('.'); 135 outint(0); 136 137 /* flags */ 138 if (sym->s_check_only_first_args) { 139 outchar('v'); 140 outint(sym->s_check_num_args); 141 } 142 if (sym->s_scanflike) { 143 outchar('S'); 144 outint(sym->s_scanflike_arg); 145 } 146 if (sym->s_printflike) { 147 outchar('P'); 148 outint(sym->s_printflike_arg); 149 } 150 /* definition or tentative definition */ 151 outchar(sym->s_def == DEF ? 'd' : 't'); 152 if (TP(sym->s_type)->t_tspec == FUNC) { 153 if (sym->s_function_has_return_value) 154 outchar('r'); 155 if (sym->s_old_style_function) 156 outchar('o'); 157 } 158 outchar('u'); /* used (no warning if not used) */ 159 160 /* name */ 161 outname(hte->h_name); 162 163 /* type */ 164 outtype(TP(sym->s_type)); 165 } 166 167 /* 168 * Write the first definition of a name into the lint library. 169 */ 170 static void 171 dumpname(hte_t *hte) 172 { 173 sym_t *sym, *def; 174 175 /* static and undefined symbols are not written */ 176 if (hte->h_static || !hte->h_def) 177 return; 178 179 /* 180 * If there is a definition, write it. Otherwise write a tentative 181 * definition. This is necessary because more than one tentative 182 * definition is allowed (except with sflag). 183 */ 184 def = NULL; 185 for (sym = hte->h_syms; sym != NULL; sym = sym->s_next) { 186 if (sym->s_def == DEF) { 187 def = sym; 188 break; 189 } 190 if (sym->s_def == TDEF && def == NULL) 191 def = sym; 192 } 193 if (def == NULL) 194 errx(1, "internal error: dumpname() %s", hte->h_name); 195 196 outdef(hte, def); 197 } 198 199 /* 200 * Write a new lint library. 201 */ 202 void 203 outlib(const char *name) 204 { 205 /* Open of output file and initialization of the output buffer */ 206 outopen(name); 207 208 /* write name of lint library */ 209 outsrc(name); 210 211 /* name of lint lib has index 0 */ 212 outclr(); 213 outint(0); 214 outchar('s'); 215 outstrg(name); 216 217 /* 218 * print the names of all files references by unnamed 219 * struct/union/enum declarations. 220 */ 221 outfiles(); 222 223 /* write all definitions with external linkage */ 224 symtab_forall_sorted(dumpname); 225 226 /* close the output */ 227 outclose(); 228 } 229 230 /* 231 * Write out the name of a file referenced by a type. 232 */ 233 struct outflist { 234 short ofl_num; 235 struct outflist *ofl_next; 236 }; 237 static struct outflist *outflist; 238 239 int 240 addoutfile(short num) 241 { 242 struct outflist *ofl, **pofl; 243 int i; 244 245 ofl = outflist; 246 pofl = &outflist; 247 i = 1; /* library is 0 */ 248 249 while (ofl != NULL) { 250 if (ofl->ofl_num == num) 251 break; 252 253 pofl = &ofl->ofl_next; 254 ofl = ofl->ofl_next; 255 i++; 256 } 257 258 if (ofl == NULL) { 259 ofl = *pofl = xmalloc(sizeof(**pofl)); 260 ofl->ofl_num = num; 261 ofl->ofl_next = NULL; 262 } 263 return i; 264 } 265 266 static void 267 outfiles(void) 268 { 269 struct outflist *ofl; 270 int i; 271 272 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 273 /* reset output buffer */ 274 outclr(); 275 276 outint(i); 277 outchar('s'); 278 outstrg(fnames[ofl->ofl_num]); 279 } 280 } 281
Indexes created Tue Sep 30 07:10:03 GMT 2025