emit2.c revision 1.35
1 /* $NetBSD: emit2.c,v 1.35 2023/08/12 21:08:37 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) 37 __RCSID("$NetBSD: emit2.c,v 1.35 2023/08/12 21:08:37 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 #ifdef INT128_SIZE 54 static const char tt[NTSPEC] = "???BCCCSSIILLQQJJDDD?XXXVTTTPAF"; 55 static const char ss[NTSPEC] = "??? su u u u u us l?s l sue "; 56 #else 57 static const char tt[NTSPEC] = "???BCCCSSIILLQQDDD?XXXVTTTPAF"; 58 static const char ss[NTSPEC] = "??? su u u u us l?s l sue "; 59 #endif 60 61 while (tp != NULL) { 62 tspec_t ts = tp->t_tspec; 63 if (ts == INT && tp->t_is_enum) 64 ts = ENUM; 65 if (!ch_isupper(tt[ts])) 66 errx(1, "internal error: outtype(%d)", ts); 67 if (tp->t_const) 68 outchar('c'); 69 if (tp->t_volatile) 70 outchar('v'); 71 if (ss[ts] != ' ') 72 outchar(ss[ts]); 73 if (ts == FUNC && tp->t_args != NULL && !tp->t_proto) 74 outchar('f'); 75 else 76 outchar(tt[ts]); 77 78 if (ts == ARRAY) { 79 outint(tp->t_dim); 80 } else if (ts == ENUM || ts == STRUCT || ts == UNION) { 81 if (tp->t_istag) { 82 outint(1); 83 outname(tp->t_tag->h_name); 84 } else if (tp->t_istynam) { 85 outint(2); 86 outname(tp->t_tynam->h_name); 87 } else if (tp->t_isuniqpos) { 88 outint(3); 89 outint(tp->t_uniqpos.p_line); 90 outchar('.'); 91 outint(tp->t_uniqpos.p_file); 92 outchar('.'); 93 outint(tp->t_uniqpos.p_uniq); 94 } else 95 errx(1, "internal error: outtype"); 96 } else if (ts == FUNC && tp->t_args != NULL) { 97 int na = 0; 98 for (type_t **ap = tp->t_args; *ap != NULL; ap++) 99 na++; 100 if (tp->t_vararg) 101 na++; 102 outint(na); 103 for (type_t **ap = tp->t_args; *ap != NULL; ap++) 104 outtype(*ap); 105 if (tp->t_vararg) 106 outchar('E'); 107 } 108 tp = tp->t_subt; 109 } 110 } 111 112 /* 113 * Write a definition. 114 */ 115 static void 116 outdef(hte_t *hte, sym_t *sym) 117 { 118 119 outint(0); /* line number in C source file */ 120 outchar('d'); /* definition */ 121 outint(0); /* index of file where symbol was defined */ 122 outchar('.'); 123 outint(0); /* line number of definition */ 124 125 /* flags */ 126 if (sym->s_check_only_first_args) { 127 outchar('v'); 128 outint(sym->s_check_num_args); 129 } 130 if (sym->s_scanflike) { 131 outchar('S'); 132 outint(sym->s_scanflike_arg); 133 } 134 if (sym->s_printflike) { 135 outchar('P'); 136 outint(sym->s_printflike_arg); 137 } 138 /* definition or tentative definition */ 139 outchar(sym->s_def == DEF ? 'd' : 't'); 140 if (TP(sym->s_type)->t_tspec == FUNC) { 141 if (sym->s_function_has_return_value) 142 outchar('r'); 143 if (sym->s_old_style_function) 144 outchar('o'); 145 } 146 outchar('u'); /* used (no warning if not used) */ 147 outname(hte->h_name); 148 outtype(TP(sym->s_type)); 149 outchar('\n'); 150 } 151 152 /* 153 * Write the first definition of a name into the lint library. 154 */ 155 static void 156 dumpname(hte_t *hte) 157 { 158 sym_t *sym, *def; 159 160 /* static and undefined symbols are not written */ 161 if (hte->h_static || !hte->h_def) 162 return; 163 164 /* 165 * If there is a definition, write it. Otherwise, write a tentative 166 * definition. This is necessary because more than one tentative 167 * definition is allowed (except with sflag). 168 */ 169 def = NULL; 170 for (sym = hte->h_syms; sym != NULL; sym = sym->s_next) { 171 if (sym->s_def == DEF) { 172 def = sym; 173 break; 174 } 175 if (sym->s_def == TDEF && def == NULL) 176 def = sym; 177 } 178 if (def == NULL) 179 errx(1, "internal error: dumpname %s", hte->h_name); 180 181 outdef(hte, def); 182 } 183 184 /* 185 * Write a new lint library. 186 */ 187 void 188 outlib(const char *name) 189 { 190 191 outopen(name); 192 193 outsrc(name); /* name of the lint library */ 194 195 outint(0); /* filename index of the lint library */ 196 outchar('s'); 197 outstrg(name); 198 outchar('\n'); 199 200 /* All files referenced by unnamed struct/union/enum declarations. */ 201 outfiles(); 202 203 /* Write all definitions with external linkage. */ 204 symtab_forall_sorted(dumpname); 205 206 outclose(); 207 } 208 209 /* 210 * Write out the name of a file referenced by a type. 211 */ 212 struct outflist { 213 short ofl_num; 214 struct outflist *ofl_next; 215 }; 216 static struct outflist *outflist; 217 218 int 219 addoutfile(short num) 220 { 221 struct outflist *ofl, **pofl; 222 int i; 223 224 ofl = outflist; 225 pofl = &outflist; 226 i = 1; /* library is 0 */ 227 228 while (ofl != NULL) { 229 if (ofl->ofl_num == num) 230 break; 231 232 pofl = &ofl->ofl_next; 233 ofl = ofl->ofl_next; 234 i++; 235 } 236 237 if (ofl == NULL) { 238 ofl = *pofl = xmalloc(sizeof(**pofl)); 239 ofl->ofl_num = num; 240 ofl->ofl_next = NULL; 241 } 242 return i; 243 } 244 245 static void 246 outfiles(void) 247 { 248 struct outflist *ofl; 249 int i; 250 251 for (ofl = outflist, i = 1; ofl != NULL; ofl = ofl->ofl_next, i++) { 252 outint(i); 253 outchar('s'); 254 outstrg(fnames[ofl->ofl_num]); 255 outchar('\n'); 256 } 257 } 258
Indexes created Mon Sep 29 03:10:08 GMT 2025