| 1 | %{ /* deffilep.y - parser for .def files */ |
| 2 | |
| 3 | /* Copyright 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, |
| 4 | 2007, 2009 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Binutils. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "libiberty.h" |
| 25 | #include "safe-ctype.h" |
| 26 | #include "bfd.h" |
| 27 | #include "ld.h" |
| 28 | #include "ldmisc.h" |
| 29 | #include "deffile.h" |
| 30 | |
| 31 | #define TRACE 0 |
| 32 | |
| 33 | #define ROUND_UP(a, b) (((a)+((b)-1))&~((b)-1)) |
| 34 | |
| 35 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), |
| 36 | as well as gratuitiously global symbol names, so we can have multiple |
| 37 | yacc generated parsers in ld. Note that these are only the variables |
| 38 | produced by yacc. If other parser generators (bison, byacc, etc) produce |
| 39 | additional global names that conflict at link time, then those parser |
| 40 | generators need to be fixed instead of adding those names to this list. */ |
| 41 | |
| 42 | #define yymaxdepth def_maxdepth |
| 43 | #define yyparse def_parse |
| 44 | #define yylex def_lex |
| 45 | #define yyerror def_error |
| 46 | #define yylval def_lval |
| 47 | #define yychar def_char |
| 48 | #define yydebug def_debug |
| 49 | #define yypact def_pact |
| 50 | #define yyr1 def_r1 |
| 51 | #define yyr2 def_r2 |
| 52 | #define yydef def_def |
| 53 | #define yychk def_chk |
| 54 | #define yypgo def_pgo |
| 55 | #define yyact def_act |
| 56 | #define yyexca def_exca |
| 57 | #define yyerrflag def_errflag |
| 58 | #define yynerrs def_nerrs |
| 59 | #define yyps def_ps |
| 60 | #define yypv def_pv |
| 61 | #define yys def_s |
| 62 | #define yy_yys def_yys |
| 63 | #define yystate def_state |
| 64 | #define yytmp def_tmp |
| 65 | #define yyv def_v |
| 66 | #define yy_yyv def_yyv |
| 67 | #define yyval def_val |
| 68 | #define yylloc def_lloc |
| 69 | #define yyreds def_reds /* With YYDEBUG defined. */ |
| 70 | #define yytoks def_toks /* With YYDEBUG defined. */ |
| 71 | #define yylhs def_yylhs |
| 72 | #define yylen def_yylen |
| 73 | #define yydefred def_yydefred |
| 74 | #define yydgoto def_yydgoto |
| 75 | #define yysindex def_yysindex |
| 76 | #define yyrindex def_yyrindex |
| 77 | #define yygindex def_yygindex |
| 78 | #define yytable def_yytable |
| 79 | #define yycheck def_yycheck |
| 80 | |
| 81 | typedef struct def_pool_str { |
| 82 | struct def_pool_str *next; |
| 83 | char data[1]; |
| 84 | } def_pool_str; |
| 85 | |
| 86 | static def_pool_str *pool_strs = NULL; |
| 87 | |
| 88 | static char *def_pool_alloc (size_t sz); |
| 89 | static char *def_pool_strdup (const char *str); |
| 90 | static void def_pool_free (void); |
| 91 | |
| 92 | static void def_description (const char *); |
| 93 | static void def_exports (const char *, const char *, int, int, const char *); |
| 94 | static void def_heapsize (int, int); |
| 95 | static void def_import (const char *, const char *, const char *, const char *, |
| 96 | int, const char *); |
| 97 | static void def_image_name (const char *, int, int); |
| 98 | static void def_section (const char *, int); |
| 99 | static void def_section_alt (const char *, const char *); |
| 100 | static void def_stacksize (int, int); |
| 101 | static void def_version (int, int); |
| 102 | static void def_directive (char *); |
| 103 | static void def_aligncomm (char *str, int align); |
| 104 | static int def_parse (void); |
| 105 | static int def_error (const char *); |
| 106 | static int def_lex (void); |
| 107 | |
| 108 | static int lex_forced_token = 0; |
| 109 | static const char *lex_parse_string = 0; |
| 110 | static const char *lex_parse_string_end = 0; |
| 111 | |
| 112 | %} |
| 113 | |
| 114 | %union { |
| 115 | char *id; |
| 116 | int number; |
| 117 | char *digits; |
| 118 | }; |
| 119 | |
| 120 | %token NAME LIBRARY DESCRIPTION STACKSIZE_K HEAPSIZE CODE DATAU DATAL |
| 121 | %token SECTIONS EXPORTS IMPORTS VERSIONK BASE CONSTANTU CONSTANTL |
| 122 | %token PRIVATEU PRIVATEL ALIGNCOMM |
| 123 | %token READ WRITE EXECUTE SHARED NONAMEU NONAMEL DIRECTIVE EQUAL |
| 124 | %token <id> ID |
| 125 | %token <digits> DIGITS |
| 126 | %type <number> NUMBER |
| 127 | %type <digits> opt_digits |
| 128 | %type <number> opt_base opt_ordinal |
| 129 | %type <number> attr attr_list opt_number exp_opt_list exp_opt |
| 130 | %type <id> opt_name opt_equal_name dot_name anylang_id opt_id |
| 131 | %type <id> opt_equalequal_name |
| 132 | |
| 133 | %% |
| 134 | |
| 135 | start: start command |
| 136 | | command |
| 137 | ; |
| 138 | |
| 139 | command: |
| 140 | NAME opt_name opt_base { def_image_name ($2, $3, 0); } |
| 141 | | LIBRARY opt_name opt_base { def_image_name ($2, $3, 1); } |
| 142 | | DESCRIPTION ID { def_description ($2);} |
| 143 | | STACKSIZE_K NUMBER opt_number { def_stacksize ($2, $3);} |
| 144 | | HEAPSIZE NUMBER opt_number { def_heapsize ($2, $3);} |
| 145 | | CODE attr_list { def_section ("CODE", $2);} |
| 146 | | DATAU attr_list { def_section ("DATA", $2);} |
| 147 | | SECTIONS seclist |
| 148 | | EXPORTS explist |
| 149 | | IMPORTS implist |
| 150 | | VERSIONK NUMBER { def_version ($2, 0);} |
| 151 | | VERSIONK NUMBER '.' NUMBER { def_version ($2, $4);} |
| 152 | | DIRECTIVE ID { def_directive ($2);} |
| 153 | | ALIGNCOMM anylang_id ',' NUMBER { def_aligncomm ($2, $4);} |
| 154 | ; |
| 155 | |
| 156 | |
| 157 | explist: |
| 158 | /* EMPTY */ |
| 159 | | expline |
| 160 | | explist expline |
| 161 | ; |
| 162 | |
| 163 | expline: |
| 164 | /* The opt_comma is necessary to support both the usual |
| 165 | DEF file syntax as well as .drectve syntax which |
| 166 | mandates <expsym>,<expoptlist>. */ |
| 167 | dot_name opt_equal_name opt_ordinal opt_comma exp_opt_list opt_comma opt_equalequal_name |
| 168 | { def_exports ($1, $2, $3, $5, $7); } |
| 169 | ; |
| 170 | exp_opt_list: |
| 171 | /* The opt_comma is necessary to support both the usual |
| 172 | DEF file syntax as well as .drectve syntax which |
| 173 | allows for comma separated opt list. */ |
| 174 | exp_opt opt_comma exp_opt_list { $$ = $1 | $3; } |
| 175 | | { $$ = 0; } |
| 176 | ; |
| 177 | exp_opt: |
| 178 | NONAMEU { $$ = 1; } |
| 179 | | NONAMEL { $$ = 1; } |
| 180 | | CONSTANTU { $$ = 2; } |
| 181 | | CONSTANTL { $$ = 2; } |
| 182 | | DATAU { $$ = 4; } |
| 183 | | DATAL { $$ = 4; } |
| 184 | | PRIVATEU { $$ = 8; } |
| 185 | | PRIVATEL { $$ = 8; } |
| 186 | ; |
| 187 | implist: |
| 188 | implist impline |
| 189 | | impline |
| 190 | ; |
| 191 | |
| 192 | impline: |
| 193 | ID '=' ID '.' ID '.' ID opt_equalequal_name |
| 194 | { def_import ($1, $3, $5, $7, -1, $8); } |
| 195 | | ID '=' ID '.' ID '.' NUMBER opt_equalequal_name |
| 196 | { def_import ($1, $3, $5, 0, $7, $8); } |
| 197 | | ID '=' ID '.' ID opt_equalequal_name |
| 198 | { def_import ($1, $3, 0, $5, -1, $6); } |
| 199 | | ID '=' ID '.' NUMBER opt_equalequal_name |
| 200 | { def_import ($1, $3, 0, 0, $5, $6); } |
| 201 | | ID '.' ID '.' ID opt_equalequal_name |
| 202 | { def_import( 0, $1, $3, $5, -1, $6); } |
| 203 | | ID '.' ID opt_equalequal_name |
| 204 | { def_import ( 0, $1, 0, $3, -1, $4); } |
| 205 | ; |
| 206 | |
| 207 | seclist: |
| 208 | seclist secline |
| 209 | | secline |
| 210 | ; |
| 211 | |
| 212 | secline: |
| 213 | ID attr_list { def_section ($1, $2);} |
| 214 | | ID ID { def_section_alt ($1, $2);} |
| 215 | ; |
| 216 | |
| 217 | attr_list: |
| 218 | attr_list opt_comma attr { $$ = $1 | $3; } |
| 219 | | attr { $$ = $1; } |
| 220 | ; |
| 221 | |
| 222 | opt_comma: |
| 223 | ',' |
| 224 | | |
| 225 | ; |
| 226 | opt_number: ',' NUMBER { $$=$2;} |
| 227 | | { $$=-1;} |
| 228 | ; |
| 229 | |
| 230 | attr: |
| 231 | READ { $$ = 1;} |
| 232 | | WRITE { $$ = 2;} |
| 233 | | EXECUTE { $$=4;} |
| 234 | | SHARED { $$=8;} |
| 235 | ; |
| 236 | |
| 237 | opt_name: ID { $$ = $1; } |
| 238 | | '.' ID |
| 239 | { |
| 240 | char *name = def_pool_alloc (strlen ($2) + 2); |
| 241 | sprintf (name, ".%s", $2); |
| 242 | $$ = name; |
| 243 | } |
| 244 | | ID '.' ID |
| 245 | { |
| 246 | char *name = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + 1); |
| 247 | sprintf (name, "%s.%s", $1, $3); |
| 248 | $$ = name; |
| 249 | } |
| 250 | | { $$ = ""; } |
| 251 | ; |
| 252 | |
| 253 | opt_equalequal_name: EQUAL ID { $$ = $2; } |
| 254 | | { $$ = 0; } |
| 255 | ; |
| 256 | |
| 257 | opt_ordinal: |
| 258 | '@' NUMBER { $$ = $2;} |
| 259 | | { $$ = -1;} |
| 260 | ; |
| 261 | |
| 262 | opt_equal_name: |
| 263 | '=' dot_name { $$ = $2; } |
| 264 | | { $$ = 0; } |
| 265 | ; |
| 266 | |
| 267 | opt_base: BASE '=' NUMBER { $$ = $3;} |
| 268 | | { $$ = -1;} |
| 269 | ; |
| 270 | |
| 271 | dot_name: ID { $$ = $1; } |
| 272 | | '.' ID |
| 273 | { |
| 274 | char *name = def_pool_alloc (strlen ($2) + 2); |
| 275 | sprintf (name, ".%s", $2); |
| 276 | $$ = name; |
| 277 | } |
| 278 | | dot_name '.' ID |
| 279 | { |
| 280 | char *name = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + 1); |
| 281 | sprintf (name, "%s.%s", $1, $3); |
| 282 | $$ = name; |
| 283 | } |
| 284 | ; |
| 285 | |
| 286 | anylang_id: ID { $$ = $1; } |
| 287 | | '.' ID |
| 288 | { |
| 289 | char *id = def_pool_alloc (strlen ($2) + 2); |
| 290 | sprintf (id, ".%s", $2); |
| 291 | $$ = id; |
| 292 | } |
| 293 | | anylang_id '.' opt_digits opt_id |
| 294 | { |
| 295 | char *id = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + strlen ($4) + 1); |
| 296 | sprintf (id, "%s.%s%s", $1, $3, $4); |
| 297 | $$ = id; |
| 298 | } |
| 299 | ; |
| 300 | |
| 301 | opt_digits: DIGITS { $$ = $1; } |
| 302 | | { $$ = ""; } |
| 303 | ; |
| 304 | |
| 305 | opt_id: ID { $$ = $1; } |
| 306 | | { $$ = ""; } |
| 307 | ; |
| 308 | |
| 309 | NUMBER: DIGITS { $$ = strtoul ($1, 0, 0); } |
| 310 | |
| 311 | %% |
| 312 | |
| 313 | /***************************************************************************** |
| 314 | API |
| 315 | *****************************************************************************/ |
| 316 | |
| 317 | static FILE *the_file; |
| 318 | static const char *def_filename; |
| 319 | static int linenumber; |
| 320 | static def_file *def; |
| 321 | static int saw_newline; |
| 322 | |
| 323 | struct directive |
| 324 | { |
| 325 | struct directive *next; |
| 326 | char *name; |
| 327 | int len; |
| 328 | }; |
| 329 | |
| 330 | static struct directive *directives = 0; |
| 331 | |
| 332 | def_file * |
| 333 | def_file_empty (void) |
| 334 | { |
| 335 | def_file *rv = xmalloc (sizeof (def_file)); |
| 336 | memset (rv, 0, sizeof (def_file)); |
| 337 | rv->is_dll = -1; |
| 338 | rv->base_address = (bfd_vma) -1; |
| 339 | rv->stack_reserve = rv->stack_commit = -1; |
| 340 | rv->heap_reserve = rv->heap_commit = -1; |
| 341 | rv->version_major = rv->version_minor = -1; |
| 342 | return rv; |
| 343 | } |
| 344 | |
| 345 | def_file * |
| 346 | def_file_parse (const char *filename, def_file *add_to) |
| 347 | { |
| 348 | struct directive *d; |
| 349 | |
| 350 | the_file = fopen (filename, "r"); |
| 351 | def_filename = filename; |
| 352 | linenumber = 1; |
| 353 | if (!the_file) |
| 354 | { |
| 355 | perror (filename); |
| 356 | return 0; |
| 357 | } |
| 358 | if (add_to) |
| 359 | { |
| 360 | def = add_to; |
| 361 | } |
| 362 | else |
| 363 | { |
| 364 | def = def_file_empty (); |
| 365 | } |
| 366 | |
| 367 | saw_newline = 1; |
| 368 | if (def_parse ()) |
| 369 | { |
| 370 | def_file_free (def); |
| 371 | fclose (the_file); |
| 372 | def_pool_free (); |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | fclose (the_file); |
| 377 | |
| 378 | while ((d = directives) != NULL) |
| 379 | { |
| 380 | #if TRACE |
| 381 | printf ("Adding directive %08x `%s'\n", d->name, d->name); |
| 382 | #endif |
| 383 | def_file_add_directive (def, d->name, d->len); |
| 384 | directives = d->next; |
| 385 | free (d->name); |
| 386 | free (d); |
| 387 | } |
| 388 | def_pool_free (); |
| 389 | |
| 390 | return def; |
| 391 | } |
| 392 | |
| 393 | void |
| 394 | def_file_free (def_file *fdef) |
| 395 | { |
| 396 | int i; |
| 397 | |
| 398 | if (!fdef) |
| 399 | return; |
| 400 | if (fdef->name) |
| 401 | free (fdef->name); |
| 402 | if (fdef->description) |
| 403 | free (fdef->description); |
| 404 | |
| 405 | if (fdef->section_defs) |
| 406 | { |
| 407 | for (i = 0; i < fdef->num_section_defs; i++) |
| 408 | { |
| 409 | if (fdef->section_defs[i].name) |
| 410 | free (fdef->section_defs[i].name); |
| 411 | if (fdef->section_defs[i].class) |
| 412 | free (fdef->section_defs[i].class); |
| 413 | } |
| 414 | free (fdef->section_defs); |
| 415 | } |
| 416 | |
| 417 | if (fdef->exports) |
| 418 | { |
| 419 | for (i = 0; i < fdef->num_exports; i++) |
| 420 | { |
| 421 | if (fdef->exports[i].internal_name |
| 422 | && fdef->exports[i].internal_name != fdef->exports[i].name) |
| 423 | free (fdef->exports[i].internal_name); |
| 424 | if (fdef->exports[i].name) |
| 425 | free (fdef->exports[i].name); |
| 426 | if (fdef->exports[i].its_name) |
| 427 | free (fdef->exports[i].its_name); |
| 428 | } |
| 429 | free (fdef->exports); |
| 430 | } |
| 431 | |
| 432 | if (fdef->imports) |
| 433 | { |
| 434 | for (i = 0; i < fdef->num_imports; i++) |
| 435 | { |
| 436 | if (fdef->imports[i].internal_name |
| 437 | && fdef->imports[i].internal_name != fdef->imports[i].name) |
| 438 | free (fdef->imports[i].internal_name); |
| 439 | if (fdef->imports[i].name) |
| 440 | free (fdef->imports[i].name); |
| 441 | if (fdef->imports[i].its_name) |
| 442 | free (fdef->imports[i].its_name); |
| 443 | } |
| 444 | free (fdef->imports); |
| 445 | } |
| 446 | |
| 447 | while (fdef->modules) |
| 448 | { |
| 449 | def_file_module *m = fdef->modules; |
| 450 | |
| 451 | fdef->modules = fdef->modules->next; |
| 452 | free (m); |
| 453 | } |
| 454 | |
| 455 | while (fdef->aligncomms) |
| 456 | { |
| 457 | def_file_aligncomm *c = fdef->aligncomms; |
| 458 | |
| 459 | fdef->aligncomms = fdef->aligncomms->next; |
| 460 | free (c->symbol_name); |
| 461 | free (c); |
| 462 | } |
| 463 | |
| 464 | free (fdef); |
| 465 | } |
| 466 | |
| 467 | #ifdef DEF_FILE_PRINT |
| 468 | void |
| 469 | def_file_print (FILE *file, def_file *fdef) |
| 470 | { |
| 471 | int i; |
| 472 | |
| 473 | fprintf (file, ">>>> def_file at 0x%08x\n", fdef); |
| 474 | if (fdef->name) |
| 475 | fprintf (file, " name: %s\n", fdef->name ? fdef->name : "(unspecified)"); |
| 476 | if (fdef->is_dll != -1) |
| 477 | fprintf (file, " is dll: %s\n", fdef->is_dll ? "yes" : "no"); |
| 478 | if (fdef->base_address != (bfd_vma) -1) |
| 479 | fprintf (file, " base address: 0x%08x\n", fdef->base_address); |
| 480 | if (fdef->description) |
| 481 | fprintf (file, " description: `%s'\n", fdef->description); |
| 482 | if (fdef->stack_reserve != -1) |
| 483 | fprintf (file, " stack reserve: 0x%08x\n", fdef->stack_reserve); |
| 484 | if (fdef->stack_commit != -1) |
| 485 | fprintf (file, " stack commit: 0x%08x\n", fdef->stack_commit); |
| 486 | if (fdef->heap_reserve != -1) |
| 487 | fprintf (file, " heap reserve: 0x%08x\n", fdef->heap_reserve); |
| 488 | if (fdef->heap_commit != -1) |
| 489 | fprintf (file, " heap commit: 0x%08x\n", fdef->heap_commit); |
| 490 | |
| 491 | if (fdef->num_section_defs > 0) |
| 492 | { |
| 493 | fprintf (file, " section defs:\n"); |
| 494 | |
| 495 | for (i = 0; i < fdef->num_section_defs; i++) |
| 496 | { |
| 497 | fprintf (file, " name: `%s', class: `%s', flags:", |
| 498 | fdef->section_defs[i].name, fdef->section_defs[i].class); |
| 499 | if (fdef->section_defs[i].flag_read) |
| 500 | fprintf (file, " R"); |
| 501 | if (fdef->section_defs[i].flag_write) |
| 502 | fprintf (file, " W"); |
| 503 | if (fdef->section_defs[i].flag_execute) |
| 504 | fprintf (file, " X"); |
| 505 | if (fdef->section_defs[i].flag_shared) |
| 506 | fprintf (file, " S"); |
| 507 | fprintf (file, "\n"); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | if (fdef->num_exports > 0) |
| 512 | { |
| 513 | fprintf (file, " exports:\n"); |
| 514 | |
| 515 | for (i = 0; i < fdef->num_exports; i++) |
| 516 | { |
| 517 | fprintf (file, " name: `%s', int: `%s', ordinal: %d, flags:", |
| 518 | fdef->exports[i].name, fdef->exports[i].internal_name, |
| 519 | fdef->exports[i].ordinal); |
| 520 | if (fdef->exports[i].flag_private) |
| 521 | fprintf (file, " P"); |
| 522 | if (fdef->exports[i].flag_constant) |
| 523 | fprintf (file, " C"); |
| 524 | if (fdef->exports[i].flag_noname) |
| 525 | fprintf (file, " N"); |
| 526 | if (fdef->exports[i].flag_data) |
| 527 | fprintf (file, " D"); |
| 528 | fprintf (file, "\n"); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | if (fdef->num_imports > 0) |
| 533 | { |
| 534 | fprintf (file, " imports:\n"); |
| 535 | |
| 536 | for (i = 0; i < fdef->num_imports; i++) |
| 537 | { |
| 538 | fprintf (file, " int: %s, from: `%s', name: `%s', ordinal: %d\n", |
| 539 | fdef->imports[i].internal_name, |
| 540 | fdef->imports[i].module, |
| 541 | fdef->imports[i].name, |
| 542 | fdef->imports[i].ordinal); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | if (fdef->version_major != -1) |
| 547 | fprintf (file, " version: %d.%d\n", fdef->version_major, fdef->version_minor); |
| 548 | |
| 549 | fprintf (file, "<<<< def_file at 0x%08x\n", fdef); |
| 550 | } |
| 551 | #endif |
| 552 | |
| 553 | /* Helper routine to check for identity of string pointers, |
| 554 | which might be NULL. */ |
| 555 | |
| 556 | static int |
| 557 | are_names_equal (const char *s1, const char *s2) |
| 558 | { |
| 559 | if (!s1 && !s2) |
| 560 | return 0; |
| 561 | if (!s1 || !s2) |
| 562 | return (!s1 ? -1 : 1); |
| 563 | return strcmp (s1, s2); |
| 564 | } |
| 565 | |
| 566 | static int |
| 567 | cmp_export_elem (const def_file_export *e, const char *ex_name, |
| 568 | const char *in_name, const char *its_name, |
| 569 | int ord) |
| 570 | { |
| 571 | int r; |
| 572 | |
| 573 | if ((r = are_names_equal (ex_name, e->name)) != 0) |
| 574 | return r; |
| 575 | if ((r = are_names_equal (in_name, e->internal_name)) != 0) |
| 576 | return r; |
| 577 | if ((r = are_names_equal (its_name, e->its_name)) != 0) |
| 578 | return r; |
| 579 | return (ord - e->ordinal); |
| 580 | } |
| 581 | |
| 582 | /* Search the position of the identical element, or returns the position |
| 583 | of the next higher element. If last valid element is smaller, then MAX |
| 584 | is returned. */ |
| 585 | |
| 586 | static int |
| 587 | find_export_in_list (def_file_export *b, int max, |
| 588 | const char *ex_name, const char *in_name, |
| 589 | const char *its_name, int ord, int *is_ident) |
| 590 | { |
| 591 | int e, l, r, p; |
| 592 | |
| 593 | *is_ident = 0; |
| 594 | if (!max) |
| 595 | return 0; |
| 596 | if ((e = cmp_export_elem (b, ex_name, in_name, its_name, ord)) <= 0) |
| 597 | return 0; |
| 598 | if (max == 1) |
| 599 | return 1; |
| 600 | if ((e = cmp_export_elem (b + (max - 1), ex_name, in_name, its_name, ord)) > 0) |
| 601 | return max; |
| 602 | else if (!e || max == 2) |
| 603 | return max - 1; |
| 604 | l = 0; r = max - 1; |
| 605 | while (l < r) |
| 606 | { |
| 607 | p = (l + r) / 2; |
| 608 | e = cmp_export_elem (b + p, ex_name, in_name, its_name, ord); |
| 609 | if (!e) |
| 610 | { |
| 611 | *is_ident = 1; |
| 612 | return p; |
| 613 | } |
| 614 | else if (e < 0) |
| 615 | r = p - 1; |
| 616 | else if (e > 0) |
| 617 | l = p + 1; |
| 618 | } |
| 619 | if ((e = cmp_export_elem (b + l, ex_name, in_name, its_name, ord)) > 0) |
| 620 | ++l; |
| 621 | else if (!e) |
| 622 | *is_ident = 1; |
| 623 | return l; |
| 624 | } |
| 625 | |
| 626 | def_file_export * |
| 627 | def_file_add_export (def_file *fdef, |
| 628 | const char *external_name, |
| 629 | const char *internal_name, |
| 630 | int ordinal, |
| 631 | const char *its_name, |
| 632 | int *is_dup) |
| 633 | { |
| 634 | def_file_export *e; |
| 635 | int pos; |
| 636 | int max_exports = ROUND_UP(fdef->num_exports, 32); |
| 637 | |
| 638 | if (internal_name && !external_name) |
| 639 | external_name = internal_name; |
| 640 | if (external_name && !internal_name) |
| 641 | internal_name = external_name; |
| 642 | |
| 643 | /* We need to avoid duplicates. */ |
| 644 | *is_dup = 0; |
| 645 | pos = find_export_in_list (fdef->exports, fdef->num_exports, |
| 646 | external_name, internal_name, |
| 647 | its_name, ordinal, is_dup); |
| 648 | |
| 649 | if (*is_dup != 0) |
| 650 | return (fdef->exports + pos); |
| 651 | |
| 652 | if (fdef->num_exports >= max_exports) |
| 653 | { |
| 654 | max_exports = ROUND_UP(fdef->num_exports + 1, 32); |
| 655 | if (fdef->exports) |
| 656 | fdef->exports = xrealloc (fdef->exports, |
| 657 | max_exports * sizeof (def_file_export)); |
| 658 | else |
| 659 | fdef->exports = xmalloc (max_exports * sizeof (def_file_export)); |
| 660 | } |
| 661 | |
| 662 | e = fdef->exports + pos; |
| 663 | if (pos != fdef->num_exports) |
| 664 | memmove (&e[1], e, (sizeof (def_file_export) * (fdef->num_exports - pos))); |
| 665 | memset (e, 0, sizeof (def_file_export)); |
| 666 | e->name = xstrdup (external_name); |
| 667 | e->internal_name = xstrdup (internal_name); |
| 668 | e->its_name = (its_name ? xstrdup (its_name) : NULL); |
| 669 | e->ordinal = ordinal; |
| 670 | fdef->num_exports++; |
| 671 | return e; |
| 672 | } |
| 673 | |
| 674 | def_file_module * |
| 675 | def_get_module (def_file *fdef, const char *name) |
| 676 | { |
| 677 | def_file_module *s; |
| 678 | |
| 679 | for (s = fdef->modules; s; s = s->next) |
| 680 | if (strcmp (s->name, name) == 0) |
| 681 | return s; |
| 682 | |
| 683 | return NULL; |
| 684 | } |
| 685 | |
| 686 | static def_file_module * |
| 687 | def_stash_module (def_file *fdef, const char *name) |
| 688 | { |
| 689 | def_file_module *s; |
| 690 | |
| 691 | if ((s = def_get_module (fdef, name)) != NULL) |
| 692 | return s; |
| 693 | s = xmalloc (sizeof (def_file_module) + strlen (name)); |
| 694 | s->next = fdef->modules; |
| 695 | fdef->modules = s; |
| 696 | s->user_data = 0; |
| 697 | strcpy (s->name, name); |
| 698 | return s; |
| 699 | } |
| 700 | |
| 701 | static int |
| 702 | cmp_import_elem (const def_file_import *e, const char *ex_name, |
| 703 | const char *in_name, const char *module, |
| 704 | int ord) |
| 705 | { |
| 706 | int r; |
| 707 | |
| 708 | if ((r = are_names_equal (ex_name, e->name)) != 0) |
| 709 | return r; |
| 710 | if ((r = are_names_equal (in_name, e->internal_name)) != 0) |
| 711 | return r; |
| 712 | if (ord != e->ordinal) |
| 713 | return (ord < e->ordinal ? -1 : 1); |
| 714 | return are_names_equal (module, (e->module ? e->module->name : NULL)); |
| 715 | } |
| 716 | |
| 717 | /* Search the position of the identical element, or returns the position |
| 718 | of the next higher element. If last valid element is smaller, then MAX |
| 719 | is returned. */ |
| 720 | |
| 721 | static int |
| 722 | find_import_in_list (def_file_import *b, int max, |
| 723 | const char *ex_name, const char *in_name, |
| 724 | const char *module, int ord, int *is_ident) |
| 725 | { |
| 726 | int e, l, r, p; |
| 727 | |
| 728 | *is_ident = 0; |
| 729 | if (!max) |
| 730 | return 0; |
| 731 | if ((e = cmp_import_elem (b, ex_name, in_name, module, ord)) <= 0) |
| 732 | return 0; |
| 733 | if (max == 1) |
| 734 | return 1; |
| 735 | if ((e = cmp_import_elem (b + (max - 1), ex_name, in_name, module, ord)) > 0) |
| 736 | return max; |
| 737 | else if (!e || max == 2) |
| 738 | return max - 1; |
| 739 | l = 0; r = max - 1; |
| 740 | while (l < r) |
| 741 | { |
| 742 | p = (l + r) / 2; |
| 743 | e = cmp_import_elem (b + p, ex_name, in_name, module, ord); |
| 744 | if (!e) |
| 745 | { |
| 746 | *is_ident = 1; |
| 747 | return p; |
| 748 | } |
| 749 | else if (e < 0) |
| 750 | r = p - 1; |
| 751 | else if (e > 0) |
| 752 | l = p + 1; |
| 753 | } |
| 754 | if ((e = cmp_import_elem (b + l, ex_name, in_name, module, ord)) > 0) |
| 755 | ++l; |
| 756 | else if (!e) |
| 757 | *is_ident = 1; |
| 758 | return l; |
| 759 | } |
| 760 | |
| 761 | def_file_import * |
| 762 | def_file_add_import (def_file *fdef, |
| 763 | const char *name, |
| 764 | const char *module, |
| 765 | int ordinal, |
| 766 | const char *internal_name, |
| 767 | const char *its_name, |
| 768 | int *is_dup) |
| 769 | { |
| 770 | def_file_import *i; |
| 771 | int pos; |
| 772 | int max_imports = ROUND_UP (fdef->num_imports, 16); |
| 773 | |
| 774 | /* We need to avoid here duplicates. */ |
| 775 | *is_dup = 0; |
| 776 | pos = find_import_in_list (fdef->imports, fdef->num_imports, |
| 777 | name, |
| 778 | (!internal_name ? name : internal_name), |
| 779 | module, ordinal, is_dup); |
| 780 | if (*is_dup != 0) |
| 781 | return fdef->imports + pos; |
| 782 | |
| 783 | if (fdef->num_imports >= max_imports) |
| 784 | { |
| 785 | max_imports = ROUND_UP (fdef->num_imports+1, 16); |
| 786 | |
| 787 | if (fdef->imports) |
| 788 | fdef->imports = xrealloc (fdef->imports, |
| 789 | max_imports * sizeof (def_file_import)); |
| 790 | else |
| 791 | fdef->imports = xmalloc (max_imports * sizeof (def_file_import)); |
| 792 | } |
| 793 | i = fdef->imports + pos; |
| 794 | if (pos != fdef->num_imports) |
| 795 | memmove (&i[1], i, (sizeof (def_file_import) * (fdef->num_imports - pos))); |
| 796 | memset (i, 0, sizeof (def_file_import)); |
| 797 | if (name) |
| 798 | i->name = xstrdup (name); |
| 799 | if (module) |
| 800 | i->module = def_stash_module (fdef, module); |
| 801 | i->ordinal = ordinal; |
| 802 | if (internal_name) |
| 803 | i->internal_name = xstrdup (internal_name); |
| 804 | else |
| 805 | i->internal_name = i->name; |
| 806 | i->its_name = (its_name ? xstrdup (its_name) : NULL); |
| 807 | fdef->num_imports++; |
| 808 | |
| 809 | return i; |
| 810 | } |
| 811 | |
| 812 | struct |
| 813 | { |
| 814 | char *param; |
| 815 | int token; |
| 816 | } |
| 817 | diropts[] = |
| 818 | { |
| 819 | { "-heap", HEAPSIZE }, |
| 820 | { "-stack", STACKSIZE_K }, |
| 821 | { "-attr", SECTIONS }, |
| 822 | { "-export", EXPORTS }, |
| 823 | { "-aligncomm", ALIGNCOMM }, |
| 824 | { 0, 0 } |
| 825 | }; |
| 826 | |
| 827 | void |
| 828 | def_file_add_directive (def_file *my_def, const char *param, int len) |
| 829 | { |
| 830 | def_file *save_def = def; |
| 831 | const char *pend = param + len; |
| 832 | char * tend = (char *) param; |
| 833 | int i; |
| 834 | |
| 835 | def = my_def; |
| 836 | |
| 837 | while (param < pend) |
| 838 | { |
| 839 | while (param < pend |
| 840 | && (ISSPACE (*param) || *param == '\n' || *param == 0)) |
| 841 | param++; |
| 842 | |
| 843 | if (param == pend) |
| 844 | break; |
| 845 | |
| 846 | /* Scan forward until we encounter any of: |
| 847 | - the end of the buffer |
| 848 | - the start of a new option |
| 849 | - a newline seperating options |
| 850 | - a NUL seperating options. */ |
| 851 | for (tend = (char *) (param + 1); |
| 852 | (tend < pend |
| 853 | && !(ISSPACE (tend[-1]) && *tend == '-') |
| 854 | && *tend != '\n' && *tend != 0); |
| 855 | tend++) |
| 856 | ; |
| 857 | |
| 858 | for (i = 0; diropts[i].param; i++) |
| 859 | { |
| 860 | len = strlen (diropts[i].param); |
| 861 | |
| 862 | if (tend - param >= len |
| 863 | && strncmp (param, diropts[i].param, len) == 0 |
| 864 | && (param[len] == ':' || param[len] == ' ')) |
| 865 | { |
| 866 | lex_parse_string_end = tend; |
| 867 | lex_parse_string = param + len + 1; |
| 868 | lex_forced_token = diropts[i].token; |
| 869 | saw_newline = 0; |
| 870 | if (def_parse ()) |
| 871 | continue; |
| 872 | break; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | if (!diropts[i].param) |
| 877 | { |
| 878 | char saved; |
| 879 | |
| 880 | saved = * tend; |
| 881 | * tend = 0; |
| 882 | /* xgettext:c-format */ |
| 883 | einfo (_("Warning: .drectve `%s' unrecognized\n"), param); |
| 884 | * tend = saved; |
| 885 | } |
| 886 | |
| 887 | lex_parse_string = 0; |
| 888 | param = tend; |
| 889 | } |
| 890 | |
| 891 | def = save_def; |
| 892 | def_pool_free (); |
| 893 | } |
| 894 | |
| 895 | /* Parser Callbacks. */ |
| 896 | |
| 897 | static void |
| 898 | def_image_name (const char *name, int base, int is_dll) |
| 899 | { |
| 900 | /* If a LIBRARY or NAME statement is specified without a name, there is nothing |
| 901 | to do here. We retain the output filename specified on command line. */ |
| 902 | if (*name) |
| 903 | { |
| 904 | const char* image_name = lbasename (name); |
| 905 | |
| 906 | if (image_name != name) |
| 907 | einfo ("%s:%d: Warning: path components stripped from %s, '%s'\n", |
| 908 | def_filename, linenumber, is_dll ? "LIBRARY" : "NAME", |
| 909 | name); |
| 910 | if (def->name) |
| 911 | free (def->name); |
| 912 | /* Append the default suffix, if none specified. */ |
| 913 | if (strchr (image_name, '.') == 0) |
| 914 | { |
| 915 | const char * suffix = is_dll ? ".dll" : ".exe"; |
| 916 | |
| 917 | def->name = xmalloc (strlen (image_name) + strlen (suffix) + 1); |
| 918 | sprintf (def->name, "%s%s", image_name, suffix); |
| 919 | } |
| 920 | else |
| 921 | def->name = xstrdup (image_name); |
| 922 | } |
| 923 | |
| 924 | /* Honor a BASE address statement, even if LIBRARY string is empty. */ |
| 925 | def->base_address = base; |
| 926 | def->is_dll = is_dll; |
| 927 | } |
| 928 | |
| 929 | static void |
| 930 | def_description (const char *text) |
| 931 | { |
| 932 | int len = def->description ? strlen (def->description) : 0; |
| 933 | |
| 934 | len += strlen (text) + 1; |
| 935 | if (def->description) |
| 936 | { |
| 937 | def->description = xrealloc (def->description, len); |
| 938 | strcat (def->description, text); |
| 939 | } |
| 940 | else |
| 941 | { |
| 942 | def->description = xmalloc (len); |
| 943 | strcpy (def->description, text); |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | static void |
| 948 | def_stacksize (int reserve, int commit) |
| 949 | { |
| 950 | def->stack_reserve = reserve; |
| 951 | def->stack_commit = commit; |
| 952 | } |
| 953 | |
| 954 | static void |
| 955 | def_heapsize (int reserve, int commit) |
| 956 | { |
| 957 | def->heap_reserve = reserve; |
| 958 | def->heap_commit = commit; |
| 959 | } |
| 960 | |
| 961 | static void |
| 962 | def_section (const char *name, int attr) |
| 963 | { |
| 964 | def_file_section *s; |
| 965 | int max_sections = ROUND_UP (def->num_section_defs, 4); |
| 966 | |
| 967 | if (def->num_section_defs >= max_sections) |
| 968 | { |
| 969 | max_sections = ROUND_UP (def->num_section_defs+1, 4); |
| 970 | |
| 971 | if (def->section_defs) |
| 972 | def->section_defs = xrealloc (def->section_defs, |
| 973 | max_sections * sizeof (def_file_import)); |
| 974 | else |
| 975 | def->section_defs = xmalloc (max_sections * sizeof (def_file_import)); |
| 976 | } |
| 977 | s = def->section_defs + def->num_section_defs; |
| 978 | memset (s, 0, sizeof (def_file_section)); |
| 979 | s->name = xstrdup (name); |
| 980 | if (attr & 1) |
| 981 | s->flag_read = 1; |
| 982 | if (attr & 2) |
| 983 | s->flag_write = 1; |
| 984 | if (attr & 4) |
| 985 | s->flag_execute = 1; |
| 986 | if (attr & 8) |
| 987 | s->flag_shared = 1; |
| 988 | |
| 989 | def->num_section_defs++; |
| 990 | } |
| 991 | |
| 992 | static void |
| 993 | def_section_alt (const char *name, const char *attr) |
| 994 | { |
| 995 | int aval = 0; |
| 996 | |
| 997 | for (; *attr; attr++) |
| 998 | { |
| 999 | switch (*attr) |
| 1000 | { |
| 1001 | case 'R': |
| 1002 | case 'r': |
| 1003 | aval |= 1; |
| 1004 | break; |
| 1005 | case 'W': |
| 1006 | case 'w': |
| 1007 | aval |= 2; |
| 1008 | break; |
| 1009 | case 'X': |
| 1010 | case 'x': |
| 1011 | aval |= 4; |
| 1012 | break; |
| 1013 | case 'S': |
| 1014 | case 's': |
| 1015 | aval |= 8; |
| 1016 | break; |
| 1017 | } |
| 1018 | } |
| 1019 | def_section (name, aval); |
| 1020 | } |
| 1021 | |
| 1022 | static void |
| 1023 | def_exports (const char *external_name, |
| 1024 | const char *internal_name, |
| 1025 | int ordinal, |
| 1026 | int flags, |
| 1027 | const char *its_name) |
| 1028 | { |
| 1029 | def_file_export *dfe; |
| 1030 | int is_dup = 0; |
| 1031 | |
| 1032 | if (!internal_name && external_name) |
| 1033 | internal_name = external_name; |
| 1034 | #if TRACE |
| 1035 | printf ("def_exports, ext=%s int=%s\n", external_name, internal_name); |
| 1036 | #endif |
| 1037 | |
| 1038 | dfe = def_file_add_export (def, external_name, internal_name, ordinal, |
| 1039 | its_name, &is_dup); |
| 1040 | |
| 1041 | /* We might check here for flag redefinition and warn. For now we |
| 1042 | ignore duplicates silently. */ |
| 1043 | if (is_dup) |
| 1044 | return; |
| 1045 | |
| 1046 | if (flags & 1) |
| 1047 | dfe->flag_noname = 1; |
| 1048 | if (flags & 2) |
| 1049 | dfe->flag_constant = 1; |
| 1050 | if (flags & 4) |
| 1051 | dfe->flag_data = 1; |
| 1052 | if (flags & 8) |
| 1053 | dfe->flag_private = 1; |
| 1054 | } |
| 1055 | |
| 1056 | static void |
| 1057 | def_import (const char *internal_name, |
| 1058 | const char *module, |
| 1059 | const char *dllext, |
| 1060 | const char *name, |
| 1061 | int ordinal, |
| 1062 | const char *its_name) |
| 1063 | { |
| 1064 | char *buf = 0; |
| 1065 | const char *ext = dllext ? dllext : "dll"; |
| 1066 | int is_dup = 0; |
| 1067 | |
| 1068 | buf = xmalloc (strlen (module) + strlen (ext) + 2); |
| 1069 | sprintf (buf, "%s.%s", module, ext); |
| 1070 | module = buf; |
| 1071 | |
| 1072 | def_file_add_import (def, name, module, ordinal, internal_name, its_name, |
| 1073 | &is_dup); |
| 1074 | free (buf); |
| 1075 | } |
| 1076 | |
| 1077 | static void |
| 1078 | def_version (int major, int minor) |
| 1079 | { |
| 1080 | def->version_major = major; |
| 1081 | def->version_minor = minor; |
| 1082 | } |
| 1083 | |
| 1084 | static void |
| 1085 | def_directive (char *str) |
| 1086 | { |
| 1087 | struct directive *d = xmalloc (sizeof (struct directive)); |
| 1088 | |
| 1089 | d->next = directives; |
| 1090 | directives = d; |
| 1091 | d->name = xstrdup (str); |
| 1092 | d->len = strlen (str); |
| 1093 | } |
| 1094 | |
| 1095 | static void |
| 1096 | def_aligncomm (char *str, int align) |
| 1097 | { |
| 1098 | def_file_aligncomm *c, *p; |
| 1099 | |
| 1100 | p = NULL; |
| 1101 | c = def->aligncomms; |
| 1102 | while (c != NULL) |
| 1103 | { |
| 1104 | int e = strcmp (c->symbol_name, str); |
| 1105 | if (!e) |
| 1106 | { |
| 1107 | /* Not sure if we want to allow here duplicates with |
| 1108 | different alignments, but for now we keep them. */ |
| 1109 | e = (int) c->alignment - align; |
| 1110 | if (!e) |
| 1111 | return; |
| 1112 | } |
| 1113 | if (e > 0) |
| 1114 | break; |
| 1115 | c = (p = c)->next; |
| 1116 | } |
| 1117 | |
| 1118 | c = xmalloc (sizeof (def_file_aligncomm)); |
| 1119 | c->symbol_name = xstrdup (str); |
| 1120 | c->alignment = (unsigned int) align; |
| 1121 | if (!p) |
| 1122 | { |
| 1123 | c->next = def->aligncomms; |
| 1124 | def->aligncomms = c; |
| 1125 | } |
| 1126 | else |
| 1127 | { |
| 1128 | c->next = p->next; |
| 1129 | p->next = c; |
| 1130 | } |
| 1131 | } |
| 1132 | |
| 1133 | static int |
| 1134 | def_error (const char *err) |
| 1135 | { |
| 1136 | einfo ("%P: %s:%d: %s\n", |
| 1137 | def_filename ? def_filename : "<unknown-file>", linenumber, err); |
| 1138 | return 0; |
| 1139 | } |
| 1140 | |
| 1141 | |
| 1142 | /* Lexical Scanner. */ |
| 1143 | |
| 1144 | #undef TRACE |
| 1145 | #define TRACE 0 |
| 1146 | |
| 1147 | /* Never freed, but always reused as needed, so no real leak. */ |
| 1148 | static char *buffer = 0; |
| 1149 | static int buflen = 0; |
| 1150 | static int bufptr = 0; |
| 1151 | |
| 1152 | static void |
| 1153 | put_buf (char c) |
| 1154 | { |
| 1155 | if (bufptr == buflen) |
| 1156 | { |
| 1157 | buflen += 50; /* overly reasonable, eh? */ |
| 1158 | if (buffer) |
| 1159 | buffer = xrealloc (buffer, buflen + 1); |
| 1160 | else |
| 1161 | buffer = xmalloc (buflen + 1); |
| 1162 | } |
| 1163 | buffer[bufptr++] = c; |
| 1164 | buffer[bufptr] = 0; /* not optimal, but very convenient. */ |
| 1165 | } |
| 1166 | |
| 1167 | static struct |
| 1168 | { |
| 1169 | char *name; |
| 1170 | int token; |
| 1171 | } |
| 1172 | tokens[] = |
| 1173 | { |
| 1174 | { "BASE", BASE }, |
| 1175 | { "CODE", CODE }, |
| 1176 | { "CONSTANT", CONSTANTU }, |
| 1177 | { "constant", CONSTANTL }, |
| 1178 | { "DATA", DATAU }, |
| 1179 | { "data", DATAL }, |
| 1180 | { "DESCRIPTION", DESCRIPTION }, |
| 1181 | { "DIRECTIVE", DIRECTIVE }, |
| 1182 | { "EXECUTE", EXECUTE }, |
| 1183 | { "EXPORTS", EXPORTS }, |
| 1184 | { "HEAPSIZE", HEAPSIZE }, |
| 1185 | { "IMPORTS", IMPORTS }, |
| 1186 | { "LIBRARY", LIBRARY }, |
| 1187 | { "NAME", NAME }, |
| 1188 | { "NONAME", NONAMEU }, |
| 1189 | { "noname", NONAMEL }, |
| 1190 | { "PRIVATE", PRIVATEU }, |
| 1191 | { "private", PRIVATEL }, |
| 1192 | { "READ", READ }, |
| 1193 | { "SECTIONS", SECTIONS }, |
| 1194 | { "SEGMENTS", SECTIONS }, |
| 1195 | { "SHARED", SHARED }, |
| 1196 | { "STACKSIZE", STACKSIZE_K }, |
| 1197 | { "VERSION", VERSIONK }, |
| 1198 | { "WRITE", WRITE }, |
| 1199 | { 0, 0 } |
| 1200 | }; |
| 1201 | |
| 1202 | static int |
| 1203 | def_getc (void) |
| 1204 | { |
| 1205 | int rv; |
| 1206 | |
| 1207 | if (lex_parse_string) |
| 1208 | { |
| 1209 | if (lex_parse_string >= lex_parse_string_end) |
| 1210 | rv = EOF; |
| 1211 | else |
| 1212 | rv = *lex_parse_string++; |
| 1213 | } |
| 1214 | else |
| 1215 | { |
| 1216 | rv = fgetc (the_file); |
| 1217 | } |
| 1218 | if (rv == '\n') |
| 1219 | saw_newline = 1; |
| 1220 | return rv; |
| 1221 | } |
| 1222 | |
| 1223 | static int |
| 1224 | def_ungetc (int c) |
| 1225 | { |
| 1226 | if (lex_parse_string) |
| 1227 | { |
| 1228 | lex_parse_string--; |
| 1229 | return c; |
| 1230 | } |
| 1231 | else |
| 1232 | return ungetc (c, the_file); |
| 1233 | } |
| 1234 | |
| 1235 | static int |
| 1236 | def_lex (void) |
| 1237 | { |
| 1238 | int c, i, q; |
| 1239 | |
| 1240 | if (lex_forced_token) |
| 1241 | { |
| 1242 | i = lex_forced_token; |
| 1243 | lex_forced_token = 0; |
| 1244 | #if TRACE |
| 1245 | printf ("lex: forcing token %d\n", i); |
| 1246 | #endif |
| 1247 | return i; |
| 1248 | } |
| 1249 | |
| 1250 | c = def_getc (); |
| 1251 | |
| 1252 | /* Trim leading whitespace. */ |
| 1253 | while (c != EOF && (c == ' ' || c == '\t') && saw_newline) |
| 1254 | c = def_getc (); |
| 1255 | |
| 1256 | if (c == EOF) |
| 1257 | { |
| 1258 | #if TRACE |
| 1259 | printf ("lex: EOF\n"); |
| 1260 | #endif |
| 1261 | return 0; |
| 1262 | } |
| 1263 | |
| 1264 | if (saw_newline && c == ';') |
| 1265 | { |
| 1266 | do |
| 1267 | { |
| 1268 | c = def_getc (); |
| 1269 | } |
| 1270 | while (c != EOF && c != '\n'); |
| 1271 | if (c == '\n') |
| 1272 | return def_lex (); |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
| 1276 | /* Must be something else. */ |
| 1277 | saw_newline = 0; |
| 1278 | |
| 1279 | if (ISDIGIT (c)) |
| 1280 | { |
| 1281 | bufptr = 0; |
| 1282 | while (c != EOF && (ISXDIGIT (c) || (c == 'x'))) |
| 1283 | { |
| 1284 | put_buf (c); |
| 1285 | c = def_getc (); |
| 1286 | } |
| 1287 | if (c != EOF) |
| 1288 | def_ungetc (c); |
| 1289 | yylval.digits = def_pool_strdup (buffer); |
| 1290 | #if TRACE |
| 1291 | printf ("lex: `%s' returns DIGITS\n", buffer); |
| 1292 | #endif |
| 1293 | return DIGITS; |
| 1294 | } |
| 1295 | |
| 1296 | if (ISALPHA (c) || strchr ("$:-_?@", c)) |
| 1297 | { |
| 1298 | bufptr = 0; |
| 1299 | q = c; |
| 1300 | put_buf (c); |
| 1301 | c = def_getc (); |
| 1302 | |
| 1303 | if (q == '@') |
| 1304 | { |
| 1305 | if (ISBLANK (c) ) /* '@' followed by whitespace. */ |
| 1306 | return (q); |
| 1307 | else if (ISDIGIT (c)) /* '@' followed by digit. */ |
| 1308 | { |
| 1309 | def_ungetc (c); |
| 1310 | return (q); |
| 1311 | } |
| 1312 | #if TRACE |
| 1313 | printf ("lex: @ returns itself\n"); |
| 1314 | #endif |
| 1315 | } |
| 1316 | |
| 1317 | while (c != EOF && (ISALNUM (c) || strchr ("$:-_?/@<>", c))) |
| 1318 | { |
| 1319 | put_buf (c); |
| 1320 | c = def_getc (); |
| 1321 | } |
| 1322 | if (c != EOF) |
| 1323 | def_ungetc (c); |
| 1324 | if (ISALPHA (q)) /* Check for tokens. */ |
| 1325 | { |
| 1326 | for (i = 0; tokens[i].name; i++) |
| 1327 | if (strcmp (tokens[i].name, buffer) == 0) |
| 1328 | { |
| 1329 | #if TRACE |
| 1330 | printf ("lex: `%s' is a string token\n", buffer); |
| 1331 | #endif |
| 1332 | return tokens[i].token; |
| 1333 | } |
| 1334 | } |
| 1335 | #if TRACE |
| 1336 | printf ("lex: `%s' returns ID\n", buffer); |
| 1337 | #endif |
| 1338 | yylval.id = def_pool_strdup (buffer); |
| 1339 | return ID; |
| 1340 | } |
| 1341 | |
| 1342 | if (c == '\'' || c == '"') |
| 1343 | { |
| 1344 | q = c; |
| 1345 | c = def_getc (); |
| 1346 | bufptr = 0; |
| 1347 | |
| 1348 | while (c != EOF && c != q) |
| 1349 | { |
| 1350 | put_buf (c); |
| 1351 | c = def_getc (); |
| 1352 | } |
| 1353 | yylval.id = def_pool_strdup (buffer); |
| 1354 | #if TRACE |
| 1355 | printf ("lex: `%s' returns ID\n", buffer); |
| 1356 | #endif |
| 1357 | return ID; |
| 1358 | } |
| 1359 | |
| 1360 | if ( c == '=') |
| 1361 | { |
| 1362 | c = def_getc (); |
| 1363 | if (c == '=') |
| 1364 | { |
| 1365 | #if TRACE |
| 1366 | printf ("lex: `==' returns EQUAL\n"); |
| 1367 | #endif |
| 1368 | return EQUAL; |
| 1369 | } |
| 1370 | def_ungetc (c); |
| 1371 | #if TRACE |
| 1372 | printf ("lex: `=' returns itself\n"); |
| 1373 | #endif |
| 1374 | return '='; |
| 1375 | } |
| 1376 | if (c == '.' || c == ',') |
| 1377 | { |
| 1378 | #if TRACE |
| 1379 | printf ("lex: `%c' returns itself\n", c); |
| 1380 | #endif |
| 1381 | return c; |
| 1382 | } |
| 1383 | |
| 1384 | if (c == '\n') |
| 1385 | { |
| 1386 | linenumber++; |
| 1387 | saw_newline = 1; |
| 1388 | } |
| 1389 | |
| 1390 | /*printf ("lex: 0x%02x ignored\n", c); */ |
| 1391 | return def_lex (); |
| 1392 | } |
| 1393 | |
| 1394 | static char * |
| 1395 | def_pool_alloc (size_t sz) |
| 1396 | { |
| 1397 | def_pool_str *e; |
| 1398 | |
| 1399 | e = (def_pool_str *) xmalloc (sizeof (def_pool_str) + sz); |
| 1400 | e->next = pool_strs; |
| 1401 | pool_strs = e; |
| 1402 | return e->data; |
| 1403 | } |
| 1404 | |
| 1405 | static char * |
| 1406 | def_pool_strdup (const char *str) |
| 1407 | { |
| 1408 | char *s; |
| 1409 | size_t len; |
| 1410 | if (!str) |
| 1411 | return NULL; |
| 1412 | len = strlen (str) + 1; |
| 1413 | s = def_pool_alloc (len); |
| 1414 | memcpy (s, str, len); |
| 1415 | return s; |
| 1416 | } |
| 1417 | |
| 1418 | static void |
| 1419 | def_pool_free (void) |
| 1420 | { |
| 1421 | def_pool_str *p; |
| 1422 | while ((p = pool_strs) != NULL) |
| 1423 | { |
| 1424 | pool_strs = p->next; |
| 1425 | free (p); |
| 1426 | } |
| 1427 | } |