read.c revision 1.14
1 /* $NetBSD: read.c,v 1.14 2004/06/20 22:20:17 jmc 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 #if HAVE_NBTOOL_CONFIG_H 36 #include "nbtool_config.h" 37 #endif 38 39 #include <sys/cdefs.h> 40 #if defined(__RCSID) && !defined(lint) 41 __RCSID("$NetBSD: read.c,v 1.14 2004/06/20 22:20:17 jmc Exp $"); 42 #endif 43 44 #include <ctype.h> 45 #include <limits.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 50 #include "lint2.h" 51 52 53 /* index of current (included) source file */ 54 static int srcfile; 55 56 /* 57 * The array pointed to by inpfns maps the file name indices of input files 58 * to the file name indices used in lint2 59 */ 60 static short *inpfns; 61 static size_t ninpfns; 62 63 /* 64 * The array pointed to by *fnames maps file name indizes to file names. 65 * Indices of type short are used instead of pointers to save memory. 66 */ 67 const char **fnames; 68 static size_t nfnames; 69 70 /* 71 * Types are shared (to save memory for the types itself) and accessed 72 * via indices (to save memory for references to types (indices are short)). 73 * To share types, a equal type must be located fast. This is done by a 74 * hash table. Access by indices is done via an array of pointers to the 75 * types. 76 */ 77 typedef struct thtab { 78 const char *th_name; 79 u_short th_idx; 80 struct thtab *th_nxt; 81 } thtab_t; 82 static thtab_t **thtab; /* hash table */ 83 type_t **tlst; /* array for indexed access */ 84 static size_t tlstlen; /* length of tlst */ 85 86 static hte_t **renametab; 87 88 /* index of current C source file (as spezified at the command line) */ 89 static int csrcfile; 90 91 92 static void inperr(void); 93 static void setsrc(const char *); 94 static void setfnid(int, const char *); 95 static void funccall(pos_t *, const char *); 96 static void decldef(pos_t *, const char *); 97 static void usedsym(pos_t *, const char *); 98 static u_short inptype(const char *, const char **); 99 static int gettlen(const char *, const char **); 100 static u_short findtype(const char *, size_t, int); 101 static u_short storetyp(type_t *, const char *, size_t, int); 102 static int thash(const char *, size_t); 103 static char *inpqstrg(const char *, const char **); 104 static const char *inpname(const char *, const char **); 105 static int getfnidx(const char *); 106 107 void 108 readfile(const char *name) 109 { 110 FILE *inp; 111 size_t len; 112 const char *cp; 113 char *line, *eptr, rt = '\0'; 114 int cline, isrc, iline; 115 pos_t pos; 116 117 if (inpfns == NULL) 118 inpfns = xcalloc(ninpfns = 128, sizeof (short)); 119 if (fnames == NULL) 120 fnames = xcalloc(nfnames = 256, sizeof (char *)); 121 if (tlstlen == 0) 122 tlst = xcalloc(tlstlen = 256, sizeof (type_t *)); 123 if (thtab == NULL) 124 thtab = xcalloc(THSHSIZ2, sizeof (thtab_t)); 125 126 _inithash(&renametab); 127 128 srcfile = getfnidx(name); 129 130 if ((inp = fopen(name, "r")) == NULL) 131 err(1, "cannot open %s", name); 132 133 while ((line = fgetln(inp, &len)) != NULL) { 134 135 if (len == 0 || line[len - 1] != '\n') 136 inperr(); 137 line[len - 1] = '\0'; 138 cp = line; 139 140 /* line number in csrcfile */ 141 cline = (int)strtol(cp, &eptr, 10); 142 if (cp == eptr) { 143 cline = -1; 144 } else { 145 cp = eptr; 146 } 147 148 /* record type */ 149 if (*cp != '\0') { 150 rt = *cp++; 151 } else { 152 inperr(); 153 } 154 155 if (rt == 'S') { 156 setsrc(cp); 157 continue; 158 } else if (rt == 's') { 159 setfnid(cline, cp); 160 continue; 161 } 162 163 /* 164 * Index of (included) source file. If this index is 165 * different from csrcfile, it refers to an included 166 * file. 167 */ 168 isrc = (int)strtol(cp, &eptr, 10); 169 if (cp == eptr) 170 inperr(); 171 cp = eptr; 172 isrc = inpfns[isrc]; 173 174 /* line number in isrc */ 175 if (*cp++ != '.') 176 inperr(); 177 iline = (int)strtol(cp, &eptr, 10); 178 if (cp == eptr) 179 inperr(); 180 cp = eptr; 181 182 pos.p_src = (u_short)csrcfile; 183 pos.p_line = (u_short)cline; 184 pos.p_isrc = (u_short)isrc; 185 pos.p_iline = (u_short)iline; 186 187 /* process rest of this record */ 188 switch (rt) { 189 case 'c': 190 funccall(&pos, cp); 191 break; 192 case 'd': 193 decldef(&pos, cp); 194 break; 195 case 'u': 196 usedsym(&pos, cp); 197 break; 198 default: 199 inperr(); 200 } 201 202 } 203 204 _destroyhash(renametab); 205 206 if (ferror(inp)) 207 err(1, "read error on %s", name); 208 209 (void)fclose(inp); 210 } 211 212 213 static void 214 inperr(void) 215 { 216 217 errx(1, "input file error: %s", fnames[srcfile]); 218 } 219 220 /* 221 * Set the name of the C source file of the .ln file which is 222 * currently read. 223 */ 224 static void 225 setsrc(const char *cp) 226 { 227 228 csrcfile = getfnidx(cp); 229 } 230 231 /* 232 * setfnid() gets as input an index as used in an input file and the 233 * associated file name. If necessary, it creates a new lint2 file 234 * name index for this file name and creates the mapping of the index 235 * as used in the input file to the index used in lint2. 236 */ 237 static void 238 setfnid(int fid, const char *cp) 239 { 240 241 if (fid == -1) 242 inperr(); 243 244 if (fid >= ninpfns) { 245 inpfns = xrealloc(inpfns, (ninpfns * 2) * sizeof (short)); 246 (void)memset(inpfns + ninpfns, 0, ninpfns * sizeof (short)); 247 ninpfns *= 2; 248 } 249 /* 250 * Should always be true because indices written in the output 251 * file by lint1 are always the previous index + 1. 252 */ 253 if (fid >= ninpfns) 254 errx(1, "internal error: setfnid()"); 255 inpfns[fid] = (u_short)getfnidx(cp); 256 } 257 258 /* 259 * Process a function call record (c-record). 260 */ 261 static void 262 funccall(pos_t *posp, const char *cp) 263 { 264 arginf_t *ai, **lai; 265 char c, *eptr; 266 int rused, rdisc; 267 hte_t *hte; 268 fcall_t *fcall; 269 const char *name; 270 271 fcall = xalloc(sizeof (fcall_t)); 272 STRUCT_ASSIGN(fcall->f_pos, *posp); 273 274 /* read flags */ 275 rused = rdisc = 0; 276 lai = &fcall->f_args; 277 while ((c = *cp) == 'u' || c == 'i' || c == 'd' || 278 c == 'z' || c == 'p' || c == 'n' || c == 's') { 279 cp++; 280 switch (c) { 281 case 'u': 282 if (rused || rdisc) 283 inperr(); 284 rused = 1; 285 break; 286 case 'i': 287 if (rused || rdisc) 288 inperr(); 289 break; 290 case 'd': 291 if (rused || rdisc) 292 inperr(); 293 rdisc = 1; 294 break; 295 case 'z': 296 case 'p': 297 case 'n': 298 case 's': 299 ai = xalloc(sizeof (arginf_t)); 300 ai->a_num = (int)strtol(cp, &eptr, 10); 301 if (cp == eptr) 302 inperr(); 303 cp = eptr; 304 if (c == 'z') { 305 ai->a_pcon = ai->a_zero = 1; 306 } else if (c == 'p') { 307 ai->a_pcon = 1; 308 } else if (c == 'n') { 309 ai->a_ncon = 1; 310 } else { 311 ai->a_fmt = 1; 312 ai->a_fstrg = inpqstrg(cp, &cp); 313 } 314 *lai = ai; 315 lai = &ai->a_nxt; 316 break; 317 } 318 } 319 fcall->f_rused = rused; 320 fcall->f_rdisc = rdisc; 321 322 /* read name of function */ 323 name = inpname(cp, &cp); 324 325 /* first look it up in the renaming table, then in the normal table */ 326 hte = _hsearch(renametab, name, 0); 327 if (hte != NULL) 328 hte = hte->h_hte; 329 else 330 hte = hsearch(name, 1); 331 hte->h_used = 1; 332 333 fcall->f_type = inptype(cp, &cp); 334 335 *hte->h_lcall = fcall; 336 hte->h_lcall = &fcall->f_nxt; 337 338 if (*cp != '\0') 339 inperr(); 340 } 341 342 /* 343 * Process a declaration or definition (d-record). 344 */ 345 static void 346 decldef(pos_t *posp, const char *cp) 347 { 348 sym_t *symp, sym; 349 char c, *ep, *pos1; 350 int used, renamed; 351 hte_t *hte, *renamehte = NULL; 352 const char *name, *rename; 353 354 (void)memset(&sym, 0, sizeof (sym)); 355 STRUCT_ASSIGN(sym.s_pos, *posp); 356 sym.s_def = NODECL; 357 358 used = 0; 359 360 while ((c = *cp) == 't' || c == 'd' || c == 'e' || c == 'u' || 361 c == 'r' || c == 'o' || c == 's' || c == 'v' || 362 c == 'P' || c == 'S') { 363 cp++; 364 switch (c) { 365 case 't': 366 if (sym.s_def != NODECL) 367 inperr(); 368 sym.s_def = TDEF; 369 break; 370 case 'd': 371 if (sym.s_def != NODECL) 372 inperr(); 373 sym.s_def = DEF; 374 break; 375 case 'e': 376 if (sym.s_def != NODECL) 377 inperr(); 378 sym.s_def = DECL; 379 break; 380 case 'u': 381 if (used) 382 inperr(); 383 used = 1; 384 break; 385 case 'r': 386 if (sym.s_rval) 387 inperr(); 388 sym.s_rval = 1; 389 break; 390 case 'o': 391 if (sym.s_osdef) 392 inperr(); 393 sym.s_osdef = 1; 394 break; 395 case 's': 396 if (sym.s_static) 397 inperr(); 398 sym.s_static = 1; 399 break; 400 case 'v': 401 if (sym.s_va) 402 inperr(); 403 sym.s_va = 1; 404 sym.s_nva = (short)strtol(cp, &ep, 10); 405 if (cp == ep) 406 inperr(); 407 cp = ep; 408 break; 409 case 'P': 410 if (sym.s_prfl) 411 inperr(); 412 sym.s_prfl = 1; 413 sym.s_nprfl = (short)strtol(cp, &ep, 10); 414 if (cp == ep) 415 inperr(); 416 cp = ep; 417 break; 418 case 'S': 419 if (sym.s_scfl) 420 inperr(); 421 sym.s_scfl = 1; 422 sym.s_nscfl = (short)strtol(cp, &ep, 10); 423 if (cp == ep) 424 inperr(); 425 cp = ep; 426 break; 427 } 428 } 429 430 /* read symbol name, doing renaming if necessary */ 431 name = inpname(cp, &cp); 432 renamed = 0; 433 if (*cp == 'r') { 434 cp++; 435 name = xstrdup(name); 436 rename = inpname(cp, &cp); 437 438 /* enter it and see if it's already been renamed */ 439 renamehte = _hsearch(renametab, name, 1); 440 if (renamehte->h_hte == NULL) { 441 hte = hsearch(rename, 1); 442 renamehte->h_hte = hte; 443 renamed = 1; 444 } else if (strcmp((hte = renamehte->h_hte)->h_name, rename)) { 445 pos1 = xstrdup(mkpos(&renamehte->h_syms->s_pos)); 446 /* %s renamed multiple times\t%s :: %s */ 447 msg(18, name, pos1, mkpos(&sym.s_pos)); 448 free(pos1); 449 } 450 free((char *)name); 451 } else { 452 /* it might be a previously-done rename */ 453 hte = _hsearch(renametab, name, 0); 454 if (hte != NULL) 455 hte = hte->h_hte; 456 else 457 hte = hsearch(name, 1); 458 } 459 hte->h_used |= used; 460 if (sym.s_def == DEF || sym.s_def == TDEF) 461 hte->h_def = 1; 462 463 sym.s_type = inptype(cp, &cp); 464 465 /* 466 * Allocate memory for this symbol only if it was not already 467 * declared or tentatively defined at the same location with 468 * the same type. Works only for symbols with external linkage, 469 * because static symbols, tentatively defined at the same location 470 * but in different translation units are really different symbols. 471 */ 472 for (symp = hte->h_syms; symp != NULL; symp = symp->s_nxt) { 473 if (symp->s_pos.p_isrc == sym.s_pos.p_isrc && 474 symp->s_pos.p_iline == sym.s_pos.p_iline && 475 symp->s_type == sym.s_type && 476 ((symp->s_def == DECL && sym.s_def == DECL) || 477 (!sflag && symp->s_def == TDEF && sym.s_def == TDEF)) && 478 !symp->s_static && !sym.s_static) { 479 break; 480 } 481 } 482 483 if (symp == NULL) { 484 /* allocsym reserviert keinen Platz fuer s_nva */ 485 if (sym.s_va || sym.s_prfl || sym.s_scfl) { 486 symp = xalloc(sizeof (sym_t)); 487 STRUCT_ASSIGN(*symp, sym); 488 } else { 489 symp = xalloc(sizeof (symp->s_s)); 490 STRUCT_ASSIGN(symp->s_s, sym.s_s); 491 } 492 *hte->h_lsym = symp; 493 hte->h_lsym = &symp->s_nxt; 494 495 /* XXX hack so we can remember where a symbol was renamed */ 496 if (renamed) 497 renamehte->h_syms = symp; 498 } 499 500 if (*cp != '\0') 501 inperr(); 502 } 503 504 /* 505 * Read an u-record (emited by lint1 if a symbol was used). 506 */ 507 static void 508 usedsym(pos_t *posp, const char *cp) 509 { 510 usym_t *usym; 511 hte_t *hte; 512 const char *name; 513 514 usym = xalloc(sizeof (usym_t)); 515 STRUCT_ASSIGN(usym->u_pos, *posp); 516 517 /* needed as delimiter between two numbers */ 518 if (*cp++ != 'x') 519 inperr(); 520 521 name = inpname(cp, &cp); 522 hte = _hsearch(renametab, name, 0); 523 if (hte != NULL) 524 hte = hte->h_hte; 525 else 526 hte = hsearch(name, 1); 527 hte->h_used = 1; 528 529 *hte->h_lusym = usym; 530 hte->h_lusym = &usym->u_nxt; 531 } 532 533 /* 534 * Read a type and return the index of this type. 535 */ 536 static u_short 537 inptype(const char *cp, const char **epp) 538 { 539 char c, s, *eptr; 540 const char *ep; 541 type_t *tp; 542 int narg, i, osdef = 0; 543 size_t tlen; 544 u_short tidx; 545 int h; 546 547 /* If we have this type already, return it's index. */ 548 tlen = gettlen(cp, &ep); 549 h = thash(cp, tlen); 550 if ((tidx = findtype(cp, tlen, h)) != 0) { 551 *epp = ep; 552 return (tidx); 553 } 554 555 /* No, we must create a new type. */ 556 tp = xalloc(sizeof (type_t)); 557 558 tidx = storetyp(tp, cp, tlen, h); 559 560 c = *cp++; 561 562 while (c == 'c' || c == 'v') { 563 if (c == 'c') { 564 tp->t_const = 1; 565 } else { 566 tp->t_volatile = 1; 567 } 568 c = *cp++; 569 } 570 571 if (c == 's' || c == 'u' || c == 'l' || c == 'e') { 572 s = c; 573 c = *cp++; 574 } else { 575 s = '\0'; 576 } 577 578 switch (c) { 579 case 'C': 580 tp->t_tspec = s == 's' ? SCHAR : (s == 'u' ? UCHAR : CHAR); 581 break; 582 case 'S': 583 tp->t_tspec = s == 'u' ? USHORT : SHORT; 584 break; 585 case 'I': 586 tp->t_tspec = s == 'u' ? UINT : INT; 587 break; 588 case 'L': 589 tp->t_tspec = s == 'u' ? ULONG : LONG; 590 break; 591 case 'Q': 592 tp->t_tspec = s == 'u' ? UQUAD : QUAD; 593 break; 594 case 'D': 595 tp->t_tspec = s == 's' ? FLOAT : (s == 'l' ? LDOUBLE : DOUBLE); 596 break; 597 case 'V': 598 tp->t_tspec = VOID; 599 break; 600 case 'P': 601 tp->t_tspec = PTR; 602 break; 603 case 'A': 604 tp->t_tspec = ARRAY; 605 break; 606 case 'F': 607 case 'f': 608 osdef = c == 'f'; 609 tp->t_tspec = FUNC; 610 break; 611 case 'T': 612 tp->t_tspec = s == 'e' ? ENUM : (s == 's' ? STRUCT : UNION); 613 break; 614 } 615 616 switch (tp->t_tspec) { 617 case ARRAY: 618 tp->t_dim = (int)strtol(cp, &eptr, 10); 619 cp = eptr; 620 tp->t_subt = TP(inptype(cp, &cp)); 621 break; 622 case PTR: 623 tp->t_subt = TP(inptype(cp, &cp)); 624 break; 625 case FUNC: 626 c = *cp; 627 if (isdigit((u_char)c)) { 628 if (!osdef) 629 tp->t_proto = 1; 630 narg = (int)strtol(cp, &eptr, 10); 631 cp = eptr; 632 tp->t_args = xcalloc((size_t)(narg + 1), 633 sizeof (type_t *)); 634 for (i = 0; i < narg; i++) { 635 if (i == narg - 1 && *cp == 'E') { 636 tp->t_vararg = 1; 637 cp++; 638 } else { 639 tp->t_args[i] = TP(inptype(cp, &cp)); 640 } 641 } 642 } 643 tp->t_subt = TP(inptype(cp, &cp)); 644 break; 645 case ENUM: 646 tp->t_tspec = INT; 647 tp->t_isenum = 1; 648 /* FALLTHROUGH */ 649 case STRUCT: 650 case UNION: 651 switch (*cp++) { 652 case '1': 653 tp->t_istag = 1; 654 tp->t_tag = hsearch(inpname(cp, &cp), 1); 655 break; 656 case '2': 657 tp->t_istynam = 1; 658 tp->t_tynam = hsearch(inpname(cp, &cp), 1); 659 break; 660 case '3': 661 tp->t_isuniqpos = 1; 662 tp->t_uniqpos.p_line = strtol(cp, &eptr, 10); 663 cp = eptr; 664 cp++; 665 /* xlate to 'global' file name. */ 666 tp->t_uniqpos.p_file = 667 addoutfile(inpfns[strtol(cp, &eptr, 10)]); 668 cp = eptr; 669 cp++; 670 tp->t_uniqpos.p_uniq = strtol(cp, &eptr, 10); 671 cp = eptr; 672 break; 673 } 674 break; 675 case LONG: 676 case VOID: 677 case LDOUBLE: 678 case DOUBLE: 679 case FLOAT: 680 case UQUAD: 681 case QUAD: 682 case ULONG: 683 case UINT: 684 case INT: 685 case USHORT: 686 case SHORT: 687 case UCHAR: 688 case SCHAR: 689 case CHAR: 690 case UNSIGN: 691 case SIGNED: 692 case NOTSPEC: 693 break; 694 case NTSPEC: 695 abort(); 696 } 697 698 *epp = cp; 699 return (tidx); 700 } 701 702 /* 703 * Get the length of a type string. 704 */ 705 static int 706 gettlen(const char *cp, const char **epp) 707 { 708 const char *cp1; 709 char c, s, *eptr; 710 tspec_t t; 711 int narg, i, cm, vm; 712 713 cp1 = cp; 714 715 c = *cp++; 716 717 cm = vm = 0; 718 719 while (c == 'c' || c == 'v') { 720 if (c == 'c') { 721 if (cm) 722 inperr(); 723 cm = 1; 724 } else { 725 if (vm) 726 inperr(); 727 vm = 1; 728 } 729 c = *cp++; 730 } 731 732 if (c == 's' || c == 'u' || c == 'l' || c == 'e') { 733 s = c; 734 c = *cp++; 735 } else { 736 s = '\0'; 737 } 738 739 t = NOTSPEC; 740 741 switch (c) { 742 case 'C': 743 if (s == 's') { 744 t = SCHAR; 745 } else if (s == 'u') { 746 t = UCHAR; 747 } else if (s == '\0') { 748 t = CHAR; 749 } 750 break; 751 case 'S': 752 if (s == 'u') { 753 t = USHORT; 754 } else if (s == '\0') { 755 t = SHORT; 756 } 757 break; 758 case 'I': 759 if (s == 'u') { 760 t = UINT; 761 } else if (s == '\0') { 762 t = INT; 763 } 764 break; 765 case 'L': 766 if (s == 'u') { 767 t = ULONG; 768 } else if (s == '\0') { 769 t = LONG; 770 } 771 break; 772 case 'Q': 773 if (s == 'u') { 774 t = UQUAD; 775 } else if (s == '\0') { 776 t = QUAD; 777 } 778 break; 779 case 'D': 780 if (s == 's') { 781 t = FLOAT; 782 } else if (s == 'l') { 783 t = LDOUBLE; 784 } else if (s == '\0') { 785 t = DOUBLE; 786 } 787 break; 788 case 'V': 789 if (s == '\0') 790 t = VOID; 791 break; 792 case 'P': 793 if (s == '\0') 794 t = PTR; 795 break; 796 case 'A': 797 if (s == '\0') 798 t = ARRAY; 799 break; 800 case 'F': 801 case 'f': 802 if (s == '\0') 803 t = FUNC; 804 break; 805 case 'T': 806 if (s == 'e') { 807 t = ENUM; 808 } else if (s == 's') { 809 t = STRUCT; 810 } else if (s == 'u') { 811 t = UNION; 812 } 813 break; 814 default: 815 inperr(); 816 } 817 818 if (t == NOTSPEC) 819 inperr(); 820 821 switch (t) { 822 case ARRAY: 823 (void)strtol(cp, &eptr, 10); 824 if (cp == eptr) 825 inperr(); 826 cp = eptr; 827 (void)gettlen(cp, &cp); 828 break; 829 case PTR: 830 (void)gettlen(cp, &cp); 831 break; 832 case FUNC: 833 c = *cp; 834 if (isdigit((u_char)c)) { 835 narg = (int)strtol(cp, &eptr, 10); 836 cp = eptr; 837 for (i = 0; i < narg; i++) { 838 if (i == narg - 1 && *cp == 'E') { 839 cp++; 840 } else { 841 (void)gettlen(cp, &cp); 842 } 843 } 844 } 845 (void)gettlen(cp, &cp); 846 break; 847 case ENUM: 848 case STRUCT: 849 case UNION: 850 switch (*cp++) { 851 case '1': 852 (void)inpname(cp, &cp); 853 break; 854 case '2': 855 (void)inpname(cp, &cp); 856 break; 857 case '3': 858 /* unique position: line.file.uniquifier */ 859 (void)strtol(cp, &eptr, 10); 860 if (cp == eptr) 861 inperr(); 862 cp = eptr; 863 if (*cp++ != '.') 864 inperr(); 865 (void)strtol(cp, &eptr, 10); 866 if (cp == eptr) 867 inperr(); 868 cp = eptr; 869 if (*cp++ != '.') 870 inperr(); 871 (void)strtol(cp, &eptr, 10); 872 if (cp == eptr) 873 inperr(); 874 cp = eptr; 875 break; 876 default: 877 inperr(); 878 } 879 break; 880 case FLOAT: 881 case USHORT: 882 case SHORT: 883 case UCHAR: 884 case SCHAR: 885 case CHAR: 886 case UNSIGN: 887 case SIGNED: 888 case NOTSPEC: 889 case INT: 890 case UINT: 891 case DOUBLE: 892 case LDOUBLE: 893 case VOID: 894 case ULONG: 895 case QUAD: 896 case UQUAD: 897 case LONG: 898 break; 899 case NTSPEC: 900 abort(); 901 } 902 903 *epp = cp; 904 return (cp - cp1); 905 } 906 907 /* 908 * Search a type by it's type string. 909 */ 910 static u_short 911 findtype(const char *cp, size_t len, int h) 912 { 913 thtab_t *thte; 914 915 for (thte = thtab[h]; thte != NULL; thte = thte->th_nxt) { 916 if (strncmp(thte->th_name, cp, len) != 0) 917 continue; 918 if (thte->th_name[len] == '\0') 919 return (thte->th_idx); 920 } 921 922 return (0); 923 } 924 925 /* 926 * Store a type and it's type string so we can later share this type 927 * if we read the same type string from the input file. 928 */ 929 static u_short 930 storetyp(type_t *tp, const char *cp, size_t len, int h) 931 { 932 static u_int tidx = 1; /* 0 is reserved */ 933 thtab_t *thte; 934 char *name; 935 936 if (tidx >= USHRT_MAX) 937 errx(1, "sorry, too many types"); 938 939 if (tidx == tlstlen - 1) { 940 tlst = xrealloc(tlst, (tlstlen * 2) * sizeof (type_t *)); 941 (void)memset(tlst + tlstlen, 0, tlstlen * sizeof (type_t *)); 942 tlstlen *= 2; 943 } 944 945 tlst[tidx] = tp; 946 947 /* create a hash table entry */ 948 name = xalloc(len + 1); 949 (void)memcpy(name, cp, len); 950 name[len] = '\0'; 951 952 thte = xalloc(sizeof (thtab_t)); 953 thte->th_name = name; 954 thte->th_idx = tidx; 955 thte->th_nxt = thtab[h]; 956 thtab[h] = thte; 957 958 return ((u_short)tidx++); 959 } 960 961 /* 962 * Hash function for types 963 */ 964 static int 965 thash(const char *s, size_t len) 966 { 967 u_int v; 968 969 v = 0; 970 while (len-- != 0) { 971 v = (v << sizeof (v)) + (u_char)*s++; 972 v ^= v >> (sizeof (v) * CHAR_BIT - sizeof (v)); 973 } 974 return (v % THSHSIZ2); 975 } 976 977 /* 978 * Read a string enclosed by "". This string may contain quoted chars. 979 */ 980 static char * 981 inpqstrg(const char *src, const char **epp) 982 { 983 char *strg, *dst; 984 size_t slen; 985 int c; 986 int v; 987 988 dst = strg = xmalloc(slen = 32); 989 990 if ((c = *src++) != '"') 991 inperr(); 992 if ((c = *src++) == '\0') 993 inperr(); 994 995 while (c != '"') { 996 if (c == '\\') { 997 if ((c = *src++) == '\0') 998 inperr(); 999 switch (c) { 1000 case 'n': 1001 c = '\n'; 1002 break; 1003 case 't': 1004 c = '\t'; 1005 break; 1006 case 'v': 1007 c = '\v'; 1008 break; 1009 case 'b': 1010 c = '\b'; 1011 break; 1012 case 'r': 1013 c = '\r'; 1014 break; 1015 case 'f': 1016 c = '\f'; 1017 break; 1018 case 'a': 1019 c = '\a'; 1020 break; 1021 case '\\': 1022 c = '\\'; 1023 break; 1024 case '"': 1025 c = '"'; 1026 break; 1027 case '\'': 1028 c = '\''; 1029 break; 1030 case '0': case '1': case '2': case '3': 1031 v = (c - '0') << 6; 1032 if ((c = *src++) < '0' || c > '7') 1033 inperr(); 1034 v |= (c - '0') << 3; 1035 if ((c = *src++) < '0' || c > '7') 1036 inperr(); 1037 v |= c - '0'; 1038 c = (u_char)v; 1039 break; 1040 default: 1041 inperr(); 1042 } 1043 } 1044 /* keep space for trailing '\0' */ 1045 if (dst - strg == slen - 1) { 1046 strg = xrealloc(strg, slen * 2); 1047 dst = strg + (slen - 1); 1048 slen *= 2; 1049 } 1050 *dst++ = (char)c; 1051 if ((c = *src++) == '\0') 1052 inperr(); 1053 } 1054 *dst = '\0'; 1055 1056 *epp = src; 1057 return (strg); 1058 } 1059 1060 /* 1061 * Read the name of a symbol in static memory. 1062 */ 1063 static const char * 1064 inpname(const char *cp, const char **epp) 1065 { 1066 static char *buf; 1067 static size_t blen = 0; 1068 size_t len, i; 1069 char *eptr, c; 1070 1071 len = (int)strtol(cp, &eptr, 10); 1072 if (cp == eptr) 1073 inperr(); 1074 cp = eptr; 1075 if (len + 1 > blen) 1076 buf = xrealloc(buf, blen = len + 1); 1077 for (i = 0; i < len; i++) { 1078 c = *cp++; 1079 if (!isalnum((unsigned char)c) && c != '_') 1080 inperr(); 1081 buf[i] = c; 1082 } 1083 buf[i] = '\0'; 1084 1085 *epp = cp; 1086 return (buf); 1087 } 1088 1089 /* 1090 * Return the index of a file name. If the name cannot be found, create 1091 * a new entry and return the index of the newly created entry. 1092 */ 1093 static int 1094 getfnidx(const char *fn) 1095 { 1096 int i; 1097 1098 /* 0 ist reserved */ 1099 for (i = 1; fnames[i] != NULL; i++) { 1100 if (strcmp(fnames[i], fn) == 0) 1101 break; 1102 } 1103 if (fnames[i] != NULL) 1104 return (i); 1105 1106 if (i == nfnames - 1) { 1107 fnames = xrealloc(fnames, (nfnames * 2) * sizeof (char *)); 1108 (void)memset(fnames + nfnames, 0, nfnames * sizeof (char *)); 1109 nfnames *= 2; 1110 } 1111 1112 fnames[i] = xstrdup(fn); 1113 return (i); 1114 } 1115 1116 /* 1117 * Separate symbols with static and external linkage. 1118 */ 1119 void 1120 mkstatic(hte_t *hte) 1121 { 1122 sym_t *sym1, **symp, *sym; 1123 fcall_t **callp, *call; 1124 usym_t **usymp, *usym; 1125 hte_t *nhte; 1126 int ofnd; 1127 1128 /* Look for first static definition */ 1129 for (sym1 = hte->h_syms; sym1 != NULL; sym1 = sym1->s_nxt) { 1130 if (sym1->s_static) 1131 break; 1132 } 1133 if (sym1 == NULL) 1134 return; 1135 1136 /* Do nothing if this name is used only in one translation unit. */ 1137 ofnd = 0; 1138 for (sym = hte->h_syms; sym != NULL && !ofnd; sym = sym->s_nxt) { 1139 if (sym->s_pos.p_src != sym1->s_pos.p_src) 1140 ofnd = 1; 1141 } 1142 for (call = hte->h_calls; call != NULL && !ofnd; call = call->f_nxt) { 1143 if (call->f_pos.p_src != sym1->s_pos.p_src) 1144 ofnd = 1; 1145 } 1146 for (usym = hte->h_usyms; usym != NULL && !ofnd; usym = usym->u_nxt) { 1147 if (usym->u_pos.p_src != sym1->s_pos.p_src) 1148 ofnd = 1; 1149 } 1150 if (!ofnd) { 1151 hte->h_used = 1; 1152 /* errors about undef. static symbols are printed in lint1 */ 1153 hte->h_def = 1; 1154 hte->h_static = 1; 1155 return; 1156 } 1157 1158 /* 1159 * Create a new hash table entry 1160 * 1161 * XXX this entry should be put at the beginning of the list to 1162 * avoid to process the same symbol twice. 1163 */ 1164 for (nhte = hte; nhte->h_link != NULL; nhte = nhte->h_link) 1165 continue; 1166 nhte->h_link = xmalloc(sizeof (hte_t)); 1167 nhte = nhte->h_link; 1168 nhte->h_name = hte->h_name; 1169 nhte->h_used = 1; 1170 nhte->h_def = 1; /* error in lint1 */ 1171 nhte->h_static = 1; 1172 nhte->h_syms = NULL; 1173 nhte->h_lsym = &nhte->h_syms; 1174 nhte->h_calls = NULL; 1175 nhte->h_lcall = &nhte->h_calls; 1176 nhte->h_usyms = NULL; 1177 nhte->h_lusym = &nhte->h_usyms; 1178 nhte->h_link = NULL; 1179 nhte->h_hte = NULL; 1180 1181 /* 1182 * move all symbols used in this translation unit into the new 1183 * hash table entry. 1184 */ 1185 for (symp = &hte->h_syms; (sym = *symp) != NULL; ) { 1186 if (sym->s_pos.p_src == sym1->s_pos.p_src) { 1187 sym->s_static = 1; 1188 (*symp) = sym->s_nxt; 1189 if (hte->h_lsym == &sym->s_nxt) 1190 hte->h_lsym = symp; 1191 sym->s_nxt = NULL; 1192 *nhte->h_lsym = sym; 1193 nhte->h_lsym = &sym->s_nxt; 1194 } else { 1195 symp = &sym->s_nxt; 1196 } 1197 } 1198 for (callp = &hte->h_calls; (call = *callp) != NULL; ) { 1199 if (call->f_pos.p_src == sym1->s_pos.p_src) { 1200 (*callp) = call->f_nxt; 1201 if (hte->h_lcall == &call->f_nxt) 1202 hte->h_lcall = callp; 1203 call->f_nxt = NULL; 1204 *nhte->h_lcall = call; 1205 nhte->h_lcall = &call->f_nxt; 1206 } else { 1207 callp = &call->f_nxt; 1208 } 1209 } 1210 for (usymp = &hte->h_usyms; (usym = *usymp) != NULL; ) { 1211 if (usym->u_pos.p_src == sym1->s_pos.p_src) { 1212 (*usymp) = usym->u_nxt; 1213 if (hte->h_lusym == &usym->u_nxt) 1214 hte->h_lusym = usymp; 1215 usym->u_nxt = NULL; 1216 *nhte->h_lusym = usym; 1217 nhte->h_lusym = &usym->u_nxt; 1218 } else { 1219 usymp = &usym->u_nxt; 1220 } 1221 } 1222 1223 /* h_def must be recalculated for old hte */ 1224 hte->h_def = nhte->h_def = 0; 1225 for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) { 1226 if (sym->s_def == DEF || sym->s_def == TDEF) { 1227 hte->h_def = 1; 1228 break; 1229 } 1230 } 1231 1232 mkstatic(hte); 1233 } 1234
Indexes created Fri Sep 26 20:09:58 GMT 2025