| 1 | /* Read a symbol table in MIPS' format (Third-Eye). |
| 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993 Free Software |
| 3 | Foundation, Inc. |
| 4 | Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major work |
| 5 | by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 22 | |
| 23 | /* This module provides three functions: mipscoff_symfile_init, |
| 24 | which initializes to read a symbol file; mipscoff_new_init, which |
| 25 | discards existing cached information when all symbols are being |
| 26 | discarded; and mipscoff_symfile_read, which reads a symbol table |
| 27 | from a file. |
| 28 | |
| 29 | mipscoff_symfile_read only does the minimum work necessary for letting the |
| 30 | user "name" things symbolically; it does not read the entire symtab. |
| 31 | Instead, it reads the external and static symbols and puts them in partial |
| 32 | symbol tables. When more extensive information is requested of a |
| 33 | file, the corresponding partial symbol table is mutated into a full |
| 34 | fledged symbol table by going back and reading the symbols |
| 35 | for real. mipscoff_psymtab_to_symtab() is called indirectly through |
| 36 | a pointer in the psymtab to do this. |
| 37 | |
| 38 | ECOFF symbol tables are mostly written in the byte order of the |
| 39 | target machine. However, one section of the table (the auxiliary |
| 40 | symbol information) is written in the host byte order. There is a |
| 41 | bit in the other symbol info which describes which host byte order |
| 42 | was used. ECOFF thereby takes the trophy from Intel `b.out' for |
| 43 | the most brain-dead adaptation of a file format to byte order. |
| 44 | |
| 45 | This module can read all four of the known byte-order combinations, |
| 46 | on any type of host. */ |
| 47 | |
| 48 | #include "defs.h" |
| 49 | #include "symtab.h" |
| 50 | #include "gdbtypes.h" |
| 51 | #include "gdbcore.h" |
| 52 | #include "symfile.h" |
| 53 | #include "objfiles.h" |
| 54 | #include "obstack.h" |
| 55 | #include "buildsym.h" |
| 56 | #include "stabsread.h" |
| 57 | #include "complaints.h" |
| 58 | |
| 59 | /* These are needed if the tm.h file does not contain the necessary |
| 60 | mips specific definitions. */ |
| 61 | |
| 62 | #ifndef MIPS_EFI_SYMBOL_NAME |
| 63 | #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" |
| 64 | #include "coff/sym.h" |
| 65 | #include "coff/symconst.h" |
| 66 | typedef struct mips_extra_func_info { |
| 67 | long numargs; |
| 68 | PDR pdr; |
| 69 | } *mips_extra_func_info_t; |
| 70 | #ifndef RA_REGNUM |
| 71 | #define RA_REGNUM 0 |
| 72 | #endif |
| 73 | #endif |
| 74 | |
| 75 | #ifdef USG |
| 76 | #include <sys/types.h> |
| 77 | #endif |
| 78 | |
| 79 | #include <sys/param.h> |
| 80 | #include <sys/file.h> |
| 81 | #include <sys/stat.h> |
| 82 | #include <string.h> |
| 83 | |
| 84 | #include "gdb-stabs.h" |
| 85 | |
| 86 | #include "bfd.h" |
| 87 | |
| 88 | #include "coff/internal.h" |
| 89 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ |
| 90 | |
| 91 | /* FIXME: coff/internal.h and aout/aout64.h both define N_ABS. We |
| 92 | want the definition from aout/aout64.h. */ |
| 93 | #undef N_ABS |
| 94 | |
| 95 | #include "libaout.h" /* Private BFD a.out information. */ |
| 96 | #include "aout/aout64.h" |
| 97 | #include "aout/stab_gnu.h" /* STABS information */ |
| 98 | |
| 99 | /* FIXME: libcoff.h and libaout.h both define a couple of macros. We |
| 100 | don't use them. */ |
| 101 | #undef exec_hdr |
| 102 | #undef obj_sym_filepos |
| 103 | |
| 104 | #include "libcoff.h" /* Private BFD COFF information. */ |
| 105 | #include "libecoff.h" /* Private BFD ECOFF information. */ |
| 106 | |
| 107 | #include "expression.h" |
| 108 | #include "language.h" /* Needed inside partial-stab.h */ |
| 109 | |
| 110 | /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */ |
| 111 | #ifndef ECOFF_REG_TO_REGNUM |
| 112 | #define ECOFF_REG_TO_REGNUM(num) (num) |
| 113 | #endif |
| 114 | |
| 115 | /* Information is passed among various mipsread routines for accessing |
| 116 | symbol files. A pointer to this structure is kept in the sym_private |
| 117 | field of the objfile struct. */ |
| 118 | |
| 119 | struct ecoff_symfile_info { |
| 120 | struct mips_pending **pending_list; |
| 121 | }; |
| 122 | #define ECOFF_SYMFILE_INFO(o) ((struct ecoff_symfile_info *)((o)->sym_private)) |
| 123 | #define ECOFF_PENDING_LIST(o) (ECOFF_SYMFILE_INFO(o)->pending_list) |
| 124 | |
| 125 | |
| 126 | /* Each partial symbol table entry contains a pointer to private data |
| 127 | for the read_symtab() function to use when expanding a partial |
| 128 | symbol table entry to a full symbol table entry. |
| 129 | |
| 130 | For mipsread this structure contains the index of the FDR that this |
| 131 | psymtab represents and a pointer to the BFD that the psymtab was |
| 132 | created from. */ |
| 133 | |
| 134 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) |
| 135 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) |
| 136 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) |
| 137 | |
| 138 | struct symloc |
| 139 | { |
| 140 | int fdr_idx; |
| 141 | bfd *cur_bfd; |
| 142 | EXTR *extern_tab; /* Pointer to external symbols for this file. */ |
| 143 | int extern_count; /* Size of extern_tab. */ |
| 144 | enum language pst_language; |
| 145 | }; |
| 146 | |
| 147 | /* Things we import explicitly from other modules */ |
| 148 | |
| 149 | extern int info_verbose; |
| 150 | |
| 151 | /* Various complaints about symbol reading that don't abort the process */ |
| 152 | |
| 153 | struct complaint bad_file_number_complaint = |
| 154 | {"bad file number %d", 0, 0}; |
| 155 | |
| 156 | struct complaint index_complaint = |
| 157 | {"bad aux index at symbol %s", 0, 0}; |
| 158 | |
| 159 | struct complaint aux_index_complaint = |
| 160 | {"bad proc end in aux found from symbol %s", 0, 0}; |
| 161 | |
| 162 | struct complaint block_index_complaint = |
| 163 | {"bad aux index at block symbol %s", 0, 0}; |
| 164 | |
| 165 | struct complaint unknown_ext_complaint = |
| 166 | {"unknown external symbol %s", 0, 0}; |
| 167 | |
| 168 | struct complaint unknown_sym_complaint = |
| 169 | {"unknown local symbol %s", 0, 0}; |
| 170 | |
| 171 | struct complaint unknown_st_complaint = |
| 172 | {"with type %d", 0, 0}; |
| 173 | |
| 174 | struct complaint block_overflow_complaint = |
| 175 | {"block containing %s overfilled", 0, 0}; |
| 176 | |
| 177 | struct complaint basic_type_complaint = |
| 178 | {"cannot map MIPS basic type 0x%x for %s", 0, 0}; |
| 179 | |
| 180 | struct complaint unknown_type_qual_complaint = |
| 181 | {"unknown type qualifier 0x%x", 0, 0}; |
| 182 | |
| 183 | struct complaint array_bitsize_complaint = |
| 184 | {"size of array target type not known, assuming %d bits", 0, 0}; |
| 185 | |
| 186 | struct complaint bad_tag_guess_complaint = |
| 187 | {"guessed tag type of %s incorrectly", 0, 0}; |
| 188 | |
| 189 | struct complaint block_member_complaint = |
| 190 | {"declaration block contains unhandled symbol type %d", 0, 0}; |
| 191 | |
| 192 | struct complaint stEnd_complaint = |
| 193 | {"stEnd with storage class %d not handled", 0, 0}; |
| 194 | |
| 195 | struct complaint unknown_mips_symtype_complaint = |
| 196 | {"unknown symbol type 0x%x", 0, 0}; |
| 197 | |
| 198 | struct complaint stab_unknown_complaint = |
| 199 | {"unknown stabs symbol %s", 0, 0}; |
| 200 | |
| 201 | struct complaint pdr_for_nonsymbol_complaint = |
| 202 | {"PDR for %s, but no symbol", 0, 0}; |
| 203 | |
| 204 | struct complaint pdr_static_symbol_complaint = |
| 205 | {"can't handle PDR for static proc at 0x%x", 0, 0}; |
| 206 | |
| 207 | struct complaint bad_setjmp_pdr_complaint = |
| 208 | {"fixing bad setjmp PDR from libc", 0, 0}; |
| 209 | |
| 210 | struct complaint bad_fbitfield_complaint = |
| 211 | {"can't handle TIR fBitfield for %s", 0, 0}; |
| 212 | |
| 213 | struct complaint bad_rfd_entry_complaint = |
| 214 | {"bad rfd entry for %s: file %d, index %d", 0, 0}; |
| 215 | |
| 216 | struct complaint unexpected_type_code_complaint = |
| 217 | {"unexpected type code for %s", 0, 0}; |
| 218 | |
| 219 | struct complaint unable_to_cross_ref_complaint = |
| 220 | {"unable to cross ref btTypedef for %s", 0, 0}; |
| 221 | |
| 222 | struct complaint illegal_forward_tq0_complaint = |
| 223 | {"illegal tq0 in forward typedef for %s", 0, 0}; |
| 224 | |
| 225 | struct complaint illegal_forward_bt_complaint = |
| 226 | {"illegal bt %d in forward typedef for %s", 0, 0}; |
| 227 | |
| 228 | /* Macros and extra defs */ |
| 229 | |
| 230 | /* Puns: hard to find whether -g was used and how */ |
| 231 | |
| 232 | #define MIN_GLEVEL GLEVEL_0 |
| 233 | #define compare_glevel(a,b) \ |
| 234 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ |
| 235 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) |
| 236 | \f |
| 237 | /* Things that really are local to this module */ |
| 238 | |
| 239 | /* Remember what we deduced to be the source language of this psymtab. */ |
| 240 | |
| 241 | static enum language psymtab_language = language_unknown; |
| 242 | |
| 243 | /* Current BFD. */ |
| 244 | |
| 245 | static bfd *cur_bfd; |
| 246 | |
| 247 | /* Pointer to current file decriptor record, and its index */ |
| 248 | |
| 249 | static FDR *cur_fdr; |
| 250 | static int cur_fd; |
| 251 | |
| 252 | /* Index of current symbol */ |
| 253 | |
| 254 | static int cur_sdx; |
| 255 | |
| 256 | /* Note how much "debuggable" this image is. We would like |
| 257 | to see at least one FDR with full symbols */ |
| 258 | |
| 259 | static max_gdbinfo; |
| 260 | static max_glevel; |
| 261 | |
| 262 | /* When examining .o files, report on undefined symbols */ |
| 263 | |
| 264 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; |
| 265 | |
| 266 | /* Pseudo symbol to use when putting stabs into the symbol table. */ |
| 267 | |
| 268 | static char stabs_symbol[] = STABS_SYMBOL; |
| 269 | |
| 270 | /* Extra builtin types */ |
| 271 | |
| 272 | struct type *builtin_type_complex; |
| 273 | struct type *builtin_type_double_complex; |
| 274 | struct type *builtin_type_fixed_dec; |
| 275 | struct type *builtin_type_float_dec; |
| 276 | struct type *builtin_type_string; |
| 277 | |
| 278 | /* Forward declarations */ |
| 279 | |
| 280 | static void |
| 281 | read_mips_symtab PARAMS ((struct objfile *, struct section_offsets *)); |
| 282 | |
| 283 | static void |
| 284 | read_the_mips_symtab PARAMS ((bfd *)); |
| 285 | |
| 286 | static int |
| 287 | upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int)); |
| 288 | |
| 289 | static void |
| 290 | parse_partial_symbols PARAMS ((struct objfile *, |
| 291 | struct section_offsets *)); |
| 292 | |
| 293 | static int |
| 294 | cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code, |
| 295 | char **, int, char *)); |
| 296 | |
| 297 | static void |
| 298 | fixup_sigtramp PARAMS ((void)); |
| 299 | |
| 300 | static struct symbol * |
| 301 | new_symbol PARAMS ((char *)); |
| 302 | |
| 303 | static struct type * |
| 304 | new_type PARAMS ((char *)); |
| 305 | |
| 306 | static struct block * |
| 307 | new_block PARAMS ((int)); |
| 308 | |
| 309 | static struct symtab * |
| 310 | new_symtab PARAMS ((char *, int, int, struct objfile *)); |
| 311 | |
| 312 | static struct linetable * |
| 313 | new_linetable PARAMS ((int)); |
| 314 | |
| 315 | static struct blockvector * |
| 316 | new_bvect PARAMS ((int)); |
| 317 | |
| 318 | static int |
| 319 | parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int)); |
| 320 | |
| 321 | static struct type * |
| 322 | parse_type PARAMS ((int, union aux_ext *, int *, int, char *)); |
| 323 | |
| 324 | static struct symbol * |
| 325 | mylookup_symbol PARAMS ((char *, struct block *, enum namespace, |
| 326 | enum address_class)); |
| 327 | |
| 328 | static struct block * |
| 329 | shrink_block PARAMS ((struct block *, struct symtab *)); |
| 330 | |
| 331 | static PTR |
| 332 | xzalloc PARAMS ((unsigned int)); |
| 333 | |
| 334 | static void |
| 335 | sort_blocks PARAMS ((struct symtab *)); |
| 336 | |
| 337 | static int |
| 338 | compare_blocks PARAMS ((const void *, const void *)); |
| 339 | |
| 340 | static struct partial_symtab * |
| 341 | new_psymtab PARAMS ((char *, struct objfile *)); |
| 342 | |
| 343 | static void |
| 344 | psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *)); |
| 345 | |
| 346 | static void |
| 347 | add_block PARAMS ((struct block *, struct symtab *)); |
| 348 | |
| 349 | static void |
| 350 | add_symbol PARAMS ((struct symbol *, struct block *)); |
| 351 | |
| 352 | static int |
| 353 | add_line PARAMS ((struct linetable *, int, CORE_ADDR, int)); |
| 354 | |
| 355 | static struct linetable * |
| 356 | shrink_linetable PARAMS ((struct linetable *)); |
| 357 | |
| 358 | static char * |
| 359 | mips_next_symbol_text PARAMS ((void)); |
| 360 | \f |
| 361 | /* Things we export to other modules */ |
| 362 | |
| 363 | /* Address bounds for the signal trampoline in inferior, if any */ |
| 364 | /* FIXME: Nothing really seems to use this. Why is it here? */ |
| 365 | |
| 366 | CORE_ADDR sigtramp_address, sigtramp_end; |
| 367 | |
| 368 | static void |
| 369 | mipscoff_new_init (ignore) |
| 370 | struct objfile *ignore; |
| 371 | { |
| 372 | sigtramp_address = 0; |
| 373 | stabsread_new_init (); |
| 374 | buildsym_new_init (); |
| 375 | } |
| 376 | |
| 377 | static void |
| 378 | mipscoff_symfile_init (objfile) |
| 379 | struct objfile *objfile; |
| 380 | { |
| 381 | if (objfile->sym_private != NULL) |
| 382 | { |
| 383 | mfree (objfile->md, objfile->sym_private); |
| 384 | } |
| 385 | objfile->sym_private = (PTR) |
| 386 | xmmalloc (objfile->md, sizeof (struct ecoff_symfile_info)); |
| 387 | } |
| 388 | |
| 389 | static void |
| 390 | mipscoff_symfile_read (objfile, section_offsets, mainline) |
| 391 | struct objfile *objfile; |
| 392 | struct section_offsets *section_offsets; |
| 393 | int mainline; |
| 394 | { |
| 395 | struct cleanup * back_to; |
| 396 | |
| 397 | init_minimal_symbol_collection (); |
| 398 | back_to = make_cleanup (discard_minimal_symbols, 0); |
| 399 | |
| 400 | /* Now that the executable file is positioned at symbol table, |
| 401 | process it and define symbols accordingly. */ |
| 402 | |
| 403 | read_mips_symtab (objfile, section_offsets); |
| 404 | |
| 405 | /* Install any minimal symbols that have been collected as the current |
| 406 | minimal symbols for this objfile. */ |
| 407 | |
| 408 | install_minimal_symbols (objfile); |
| 409 | |
| 410 | do_cleanups (back_to); |
| 411 | } |
| 412 | |
| 413 | /* Perform any local cleanups required when we are done with a particular |
| 414 | objfile. I.E, we are in the process of discarding all symbol information |
| 415 | for an objfile, freeing up all memory held for it, and unlinking the |
| 416 | objfile struct from the global list of known objfiles. */ |
| 417 | |
| 418 | static void |
| 419 | mipscoff_symfile_finish (objfile) |
| 420 | struct objfile *objfile; |
| 421 | { |
| 422 | if (objfile->sym_private != NULL) |
| 423 | { |
| 424 | mfree (objfile->md, objfile->sym_private); |
| 425 | } |
| 426 | |
| 427 | cur_bfd = 0; |
| 428 | } |
| 429 | |
| 430 | /* Allocate zeroed memory */ |
| 431 | |
| 432 | static PTR |
| 433 | xzalloc (size) |
| 434 | unsigned int size; |
| 435 | { |
| 436 | PTR p = xmalloc (size); |
| 437 | |
| 438 | memset (p, 0, size); |
| 439 | return p; |
| 440 | } |
| 441 | |
| 442 | /* Exported procedure: Builds a symtab from the PST partial one. |
| 443 | Restores the environment in effect when PST was created, delegates |
| 444 | most of the work to an ancillary procedure, and sorts |
| 445 | and reorders the symtab list at the end */ |
| 446 | |
| 447 | static void |
| 448 | mipscoff_psymtab_to_symtab (pst) |
| 449 | struct partial_symtab *pst; |
| 450 | { |
| 451 | |
| 452 | if (!pst) |
| 453 | return; |
| 454 | |
| 455 | if (info_verbose) |
| 456 | { |
| 457 | printf_filtered ("Reading in symbols for %s...", pst->filename); |
| 458 | fflush (stdout); |
| 459 | } |
| 460 | |
| 461 | next_symbol_text_func = mips_next_symbol_text; |
| 462 | |
| 463 | psymtab_to_symtab_1 (pst, pst->filename); |
| 464 | |
| 465 | /* Match with global symbols. This only needs to be done once, |
| 466 | after all of the symtabs and dependencies have been read in. */ |
| 467 | scan_file_globals (pst->objfile); |
| 468 | |
| 469 | if (info_verbose) |
| 470 | printf_filtered ("done.\n"); |
| 471 | } |
| 472 | |
| 473 | /* Exported procedure: Is PC in the signal trampoline code */ |
| 474 | |
| 475 | int |
| 476 | in_sigtramp (pc, ignore) |
| 477 | CORE_ADDR pc; |
| 478 | char *ignore; /* function name */ |
| 479 | { |
| 480 | if (sigtramp_address == 0) |
| 481 | fixup_sigtramp (); |
| 482 | return (pc >= sigtramp_address && pc < sigtramp_end); |
| 483 | } |
| 484 | \f |
| 485 | /* File-level interface functions */ |
| 486 | |
| 487 | /* Read the symtab information from file ABFD into memory. */ |
| 488 | |
| 489 | static void |
| 490 | read_the_mips_symtab (abfd) |
| 491 | bfd *abfd; |
| 492 | { |
| 493 | if (ecoff_slurp_symbolic_info (abfd) == false) |
| 494 | error ("Error reading symbol table: %s", bfd_errmsg (bfd_error)); |
| 495 | } |
| 496 | |
| 497 | /* Find a file descriptor given its index RF relative to a file CF */ |
| 498 | |
| 499 | static FDR * |
| 500 | get_rfd (cf, rf) |
| 501 | int cf, rf; |
| 502 | { |
| 503 | FDR *fdrs; |
| 504 | register FDR *f; |
| 505 | RFDT rfd; |
| 506 | |
| 507 | fdrs = ecoff_data (cur_bfd)->fdr; |
| 508 | f = fdrs + cf; |
| 509 | /* Object files do not have the RFD table, all refs are absolute */ |
| 510 | if (f->rfdBase == 0) |
| 511 | return fdrs + rf; |
| 512 | (*ecoff_backend (cur_bfd)->swap_rfd_in) |
| 513 | (cur_bfd, |
| 514 | ((char *) ecoff_data (cur_bfd)->external_rfd |
| 515 | + (f->rfdBase + rf) * ecoff_backend (cur_bfd)->external_rfd_size), |
| 516 | &rfd); |
| 517 | return fdrs + rfd; |
| 518 | } |
| 519 | |
| 520 | /* Return a safer print NAME for a file descriptor */ |
| 521 | |
| 522 | static char * |
| 523 | fdr_name (f) |
| 524 | FDR *f; |
| 525 | { |
| 526 | if (f->rss == -1) |
| 527 | return "<stripped file>"; |
| 528 | if (f->rss == 0) |
| 529 | return "<NFY>"; |
| 530 | return ecoff_data (cur_bfd)->ss + f->issBase + f->rss; |
| 531 | } |
| 532 | |
| 533 | |
| 534 | /* Read in and parse the symtab of the file OBJFILE. Symbols from |
| 535 | different sections are relocated via the SECTION_OFFSETS. */ |
| 536 | |
| 537 | static void |
| 538 | read_mips_symtab (objfile, section_offsets) |
| 539 | struct objfile *objfile; |
| 540 | struct section_offsets *section_offsets; |
| 541 | { |
| 542 | cur_bfd = objfile->obfd; |
| 543 | |
| 544 | read_the_mips_symtab (objfile->obfd); |
| 545 | |
| 546 | parse_partial_symbols (objfile, section_offsets); |
| 547 | |
| 548 | #if 0 |
| 549 | /* Check to make sure file was compiled with -g. If not, warn the |
| 550 | user of this limitation. */ |
| 551 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) |
| 552 | { |
| 553 | if (max_gdbinfo == 0) |
| 554 | printf ("\n%s not compiled with -g, debugging support is limited.\n", |
| 555 | objfile->name); |
| 556 | printf ("You should compile with -g2 or -g3 for best debugging support.\n"); |
| 557 | fflush (stdout); |
| 558 | } |
| 559 | #endif |
| 560 | } |
| 561 | \f |
| 562 | /* Local utilities */ |
| 563 | |
| 564 | /* Map of FDR indexes to partial symtabs */ |
| 565 | |
| 566 | struct pst_map |
| 567 | { |
| 568 | struct partial_symtab *pst; /* the psymtab proper */ |
| 569 | long n_globals; /* exported globals (external symbols) */ |
| 570 | long globals_offset; /* cumulative */ |
| 571 | }; |
| 572 | |
| 573 | |
| 574 | /* Utility stack, used to nest procedures and blocks properly. |
| 575 | It is a doubly linked list, to avoid too many alloc/free. |
| 576 | Since we might need it quite a few times it is NOT deallocated |
| 577 | after use. */ |
| 578 | |
| 579 | static struct parse_stack |
| 580 | { |
| 581 | struct parse_stack *next, *prev; |
| 582 | struct symtab *cur_st; /* Current symtab. */ |
| 583 | struct block *cur_block; /* Block in it. */ |
| 584 | int blocktype; /* What are we parsing. */ |
| 585 | int maxsyms; /* Max symbols in this block. */ |
| 586 | struct type *cur_type; /* Type we parse fields for. */ |
| 587 | int cur_field; /* Field number in cur_type. */ |
| 588 | CORE_ADDR procadr; /* Start addres of this procedure */ |
| 589 | int numargs; /* Its argument count */ |
| 590 | } |
| 591 | |
| 592 | *top_stack; /* Top stack ptr */ |
| 593 | |
| 594 | |
| 595 | /* Enter a new lexical context */ |
| 596 | |
| 597 | static void |
| 598 | push_parse_stack () |
| 599 | { |
| 600 | struct parse_stack *new; |
| 601 | |
| 602 | /* Reuse frames if possible */ |
| 603 | if (top_stack && top_stack->prev) |
| 604 | new = top_stack->prev; |
| 605 | else |
| 606 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); |
| 607 | /* Initialize new frame with previous content */ |
| 608 | if (top_stack) |
| 609 | { |
| 610 | register struct parse_stack *prev = new->prev; |
| 611 | |
| 612 | *new = *top_stack; |
| 613 | top_stack->prev = new; |
| 614 | new->prev = prev; |
| 615 | new->next = top_stack; |
| 616 | } |
| 617 | top_stack = new; |
| 618 | } |
| 619 | |
| 620 | /* Exit a lexical context */ |
| 621 | |
| 622 | static void |
| 623 | pop_parse_stack () |
| 624 | { |
| 625 | if (!top_stack) |
| 626 | return; |
| 627 | if (top_stack->next) |
| 628 | top_stack = top_stack->next; |
| 629 | } |
| 630 | |
| 631 | |
| 632 | /* Cross-references might be to things we haven't looked at |
| 633 | yet, e.g. type references. To avoid too many type |
| 634 | duplications we keep a quick fixup table, an array |
| 635 | of lists of references indexed by file descriptor */ |
| 636 | |
| 637 | struct mips_pending |
| 638 | { |
| 639 | struct mips_pending *next; /* link */ |
| 640 | char *s; /* the unswapped symbol */ |
| 641 | struct type *t; /* its partial type descriptor */ |
| 642 | }; |
| 643 | |
| 644 | |
| 645 | /* Check whether we already saw symbol SH in file FH */ |
| 646 | |
| 647 | static struct mips_pending * |
| 648 | is_pending_symbol (fh, sh) |
| 649 | FDR *fh; |
| 650 | char *sh; |
| 651 | { |
| 652 | int f_idx = fh - ecoff_data (cur_bfd)->fdr; |
| 653 | register struct mips_pending *p; |
| 654 | struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile); |
| 655 | |
| 656 | /* Linear search is ok, list is typically no more than 10 deep */ |
| 657 | for (p = pending_list[f_idx]; p; p = p->next) |
| 658 | if (p->s == sh) |
| 659 | break; |
| 660 | return p; |
| 661 | } |
| 662 | |
| 663 | /* Add a new symbol SH of type T */ |
| 664 | |
| 665 | static void |
| 666 | add_pending (fh, sh, t) |
| 667 | FDR *fh; |
| 668 | char *sh; |
| 669 | struct type *t; |
| 670 | { |
| 671 | int f_idx = fh - ecoff_data (cur_bfd)->fdr; |
| 672 | struct mips_pending *p = is_pending_symbol (fh, sh); |
| 673 | |
| 674 | /* Make sure we do not make duplicates */ |
| 675 | if (!p) |
| 676 | { |
| 677 | struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile); |
| 678 | |
| 679 | p = ((struct mips_pending *) |
| 680 | obstack_alloc (¤t_objfile->psymbol_obstack, |
| 681 | sizeof (struct mips_pending))); |
| 682 | p->s = sh; |
| 683 | p->t = t; |
| 684 | p->next = pending_list[f_idx]; |
| 685 | pending_list[f_idx] = p; |
| 686 | } |
| 687 | } |
| 688 | \f |
| 689 | |
| 690 | /* Parsing Routines proper. */ |
| 691 | |
| 692 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. |
| 693 | For blocks, procedures and types we open a new lexical context. |
| 694 | This is basically just a big switch on the symbol's type. Argument |
| 695 | AX is the base pointer of aux symbols for this file (fh->iauxBase). |
| 696 | EXT_SH points to the unswapped symbol, which is needed for struct, |
| 697 | union, etc., types; it is NULL for an EXTR. BIGEND says whether |
| 698 | aux symbols are big-endian or little-endian. Return count of |
| 699 | SYMR's handled (normally one). */ |
| 700 | |
| 701 | static int |
| 702 | parse_symbol (sh, ax, ext_sh, bigend) |
| 703 | SYMR *sh; |
| 704 | union aux_ext *ax; |
| 705 | char *ext_sh; |
| 706 | int bigend; |
| 707 | { |
| 708 | const bfd_size_type external_sym_size |
| 709 | = ecoff_backend (cur_bfd)->external_sym_size; |
| 710 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) = |
| 711 | ecoff_backend (cur_bfd)->swap_sym_in; |
| 712 | char *name; |
| 713 | struct symbol *s; |
| 714 | struct block *b; |
| 715 | struct mips_pending *pend; |
| 716 | struct type *t; |
| 717 | struct field *f; |
| 718 | int count = 1; |
| 719 | enum address_class class; |
| 720 | TIR tir; |
| 721 | long svalue = sh->value; |
| 722 | |
| 723 | if (ext_sh == (char *) NULL) |
| 724 | name = ecoff_data (cur_bfd)->ssext + sh->iss; |
| 725 | else |
| 726 | name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh->iss; |
| 727 | |
| 728 | switch (sh->st) |
| 729 | { |
| 730 | case stNil: |
| 731 | break; |
| 732 | |
| 733 | case stGlobal: /* external symbol, goes into global block */ |
| 734 | class = LOC_STATIC; |
| 735 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), |
| 736 | GLOBAL_BLOCK); |
| 737 | s = new_symbol (name); |
| 738 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
| 739 | goto data; |
| 740 | |
| 741 | case stStatic: /* static data, goes into current block. */ |
| 742 | class = LOC_STATIC; |
| 743 | b = top_stack->cur_block; |
| 744 | s = new_symbol (name); |
| 745 | if (sh->sc == scCommon) |
| 746 | { |
| 747 | /* It is a FORTRAN common block. At least for SGI Fortran the |
| 748 | address is not in the symbol; we need to fix it later in |
| 749 | scan_file_globals. */ |
| 750 | int bucket = hashname (SYMBOL_NAME (s)); |
| 751 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
| 752 | global_sym_chain[bucket] = s; |
| 753 | } |
| 754 | else |
| 755 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
| 756 | goto data; |
| 757 | |
| 758 | case stLocal: /* local variable, goes into current block */ |
| 759 | if (sh->sc == scRegister) |
| 760 | { |
| 761 | class = LOC_REGISTER; |
| 762 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
| 763 | } |
| 764 | else |
| 765 | class = LOC_LOCAL; |
| 766 | b = top_stack->cur_block; |
| 767 | s = new_symbol (name); |
| 768 | SYMBOL_VALUE (s) = svalue; |
| 769 | |
| 770 | data: /* Common code for symbols describing data */ |
| 771 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 772 | SYMBOL_CLASS (s) = class; |
| 773 | add_symbol (s, b); |
| 774 | |
| 775 | /* Type could be missing in a number of cases */ |
| 776 | if (sh->sc == scUndefined || sh->sc == scNil || |
| 777 | sh->index == 0xfffff) |
| 778 | SYMBOL_TYPE (s) = builtin_type_int; /* undefined? */ |
| 779 | else |
| 780 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax + sh->index, 0, bigend, name); |
| 781 | /* Value of a data symbol is its memory address */ |
| 782 | break; |
| 783 | |
| 784 | case stParam: /* arg to procedure, goes into current block */ |
| 785 | max_gdbinfo++; |
| 786 | top_stack->numargs++; |
| 787 | |
| 788 | /* Special GNU C++ name. */ |
| 789 | if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0) |
| 790 | name = "this"; /* FIXME, not alloc'd in obstack */ |
| 791 | s = new_symbol (name); |
| 792 | |
| 793 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 794 | switch (sh->sc) |
| 795 | { |
| 796 | case scRegister: |
| 797 | /* Pass by value in register. */ |
| 798 | SYMBOL_CLASS(s) = LOC_REGPARM; |
| 799 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
| 800 | break; |
| 801 | case scVar: |
| 802 | /* Pass by reference on stack. */ |
| 803 | SYMBOL_CLASS(s) = LOC_REF_ARG; |
| 804 | break; |
| 805 | case scVarRegister: |
| 806 | /* Pass by reference in register. */ |
| 807 | SYMBOL_CLASS(s) = LOC_REGPARM_ADDR; |
| 808 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
| 809 | break; |
| 810 | default: |
| 811 | /* Pass by value on stack. */ |
| 812 | SYMBOL_CLASS(s) = LOC_ARG; |
| 813 | break; |
| 814 | } |
| 815 | SYMBOL_VALUE (s) = svalue; |
| 816 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax + sh->index, 0, bigend, name); |
| 817 | add_symbol (s, top_stack->cur_block); |
| 818 | #if 0 |
| 819 | /* FIXME: This has not been tested. See dbxread.c */ |
| 820 | /* Add the type of this parameter to the function/procedure |
| 821 | type of this block. */ |
| 822 | add_param_to_type (&top_stack->cur_block->function->type, s); |
| 823 | #endif |
| 824 | break; |
| 825 | |
| 826 | case stLabel: /* label, goes into current block */ |
| 827 | s = new_symbol (name); |
| 828 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ |
| 829 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ |
| 830 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
| 831 | SYMBOL_TYPE (s) = builtin_type_int; |
| 832 | add_symbol (s, top_stack->cur_block); |
| 833 | break; |
| 834 | |
| 835 | case stProc: /* Procedure, usually goes into global block */ |
| 836 | case stStaticProc: /* Static procedure, goes into current block */ |
| 837 | s = new_symbol (name); |
| 838 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 839 | SYMBOL_CLASS (s) = LOC_BLOCK; |
| 840 | /* Type of the return value */ |
| 841 | if (sh->sc == scUndefined || sh->sc == scNil) |
| 842 | t = builtin_type_int; |
| 843 | else |
| 844 | t = parse_type (cur_fd, ax + sh->index + 1, 0, bigend, name); |
| 845 | b = top_stack->cur_block; |
| 846 | if (sh->st == stProc) |
| 847 | { |
| 848 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); |
| 849 | /* The next test should normally be true, |
| 850 | but provides a hook for nested functions |
| 851 | (which we don't want to make global). */ |
| 852 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
| 853 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 854 | } |
| 855 | add_symbol (s, b); |
| 856 | |
| 857 | /* Make a type for the procedure itself */ |
| 858 | #if 0 |
| 859 | /* FIXME: This has not been tested yet! See dbxread.c */ |
| 860 | /* Generate a template for the type of this function. The |
| 861 | types of the arguments will be added as we read the symbol |
| 862 | table. */ |
| 863 | memcpy (lookup_function_type (t), SYMBOL_TYPE (s), sizeof (struct type)); |
| 864 | #else |
| 865 | SYMBOL_TYPE (s) = lookup_function_type (t); |
| 866 | #endif |
| 867 | |
| 868 | /* Create and enter a new lexical context */ |
| 869 | b = new_block (top_stack->maxsyms); |
| 870 | SYMBOL_BLOCK_VALUE (s) = b; |
| 871 | BLOCK_FUNCTION (b) = s; |
| 872 | BLOCK_START (b) = BLOCK_END (b) = sh->value; |
| 873 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; |
| 874 | add_block (b, top_stack->cur_st); |
| 875 | |
| 876 | /* Not if we only have partial info */ |
| 877 | if (sh->sc == scUndefined || sh->sc == scNil) |
| 878 | break; |
| 879 | |
| 880 | push_parse_stack (); |
| 881 | top_stack->cur_block = b; |
| 882 | top_stack->blocktype = sh->st; |
| 883 | top_stack->cur_type = SYMBOL_TYPE (s); |
| 884 | top_stack->cur_field = -1; |
| 885 | top_stack->procadr = sh->value; |
| 886 | top_stack->numargs = 0; |
| 887 | break; |
| 888 | |
| 889 | /* Beginning of code for structure, union, and enum definitions. |
| 890 | They all share a common set of local variables, defined here. */ |
| 891 | { |
| 892 | enum type_code type_code; |
| 893 | char *ext_tsym; |
| 894 | int nfields; |
| 895 | long max_value; |
| 896 | struct field *f; |
| 897 | |
| 898 | case stStruct: /* Start a block defining a struct type */ |
| 899 | type_code = TYPE_CODE_STRUCT; |
| 900 | goto structured_common; |
| 901 | |
| 902 | case stUnion: /* Start a block defining a union type */ |
| 903 | type_code = TYPE_CODE_UNION; |
| 904 | goto structured_common; |
| 905 | |
| 906 | case stEnum: /* Start a block defining an enum type */ |
| 907 | type_code = TYPE_CODE_ENUM; |
| 908 | goto structured_common; |
| 909 | |
| 910 | case stBlock: /* Either a lexical block, or some type */ |
| 911 | if (sh->sc != scInfo && sh->sc != scCommon) |
| 912 | goto case_stBlock_code; /* Lexical block */ |
| 913 | |
| 914 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ |
| 915 | |
| 916 | /* Common code for handling struct, union, enum, and/or as-yet- |
| 917 | unknown-type blocks of info about structured data. `type_code' |
| 918 | has been set to the proper TYPE_CODE, if we know it. */ |
| 919 | structured_common: |
| 920 | push_parse_stack (); |
| 921 | top_stack->blocktype = stBlock; |
| 922 | |
| 923 | /* First count the number of fields and the highest value. */ |
| 924 | nfields = 0; |
| 925 | max_value = 0; |
| 926 | for (ext_tsym = ext_sh + external_sym_size; |
| 927 | ; |
| 928 | ext_tsym += external_sym_size) |
| 929 | { |
| 930 | SYMR tsym; |
| 931 | |
| 932 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); |
| 933 | |
| 934 | switch (tsym.st) |
| 935 | { |
| 936 | case stEnd: |
| 937 | goto end_of_fields; |
| 938 | |
| 939 | case stMember: |
| 940 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) |
| 941 | /* If the type of the member is Nil (or Void), |
| 942 | without qualifiers, assume the tag is an |
| 943 | enumeration. */ |
| 944 | if (tsym.index == indexNil) |
| 945 | type_code = TYPE_CODE_ENUM; |
| 946 | else |
| 947 | { |
| 948 | ecoff_swap_tir_in (bigend, |
| 949 | &ax[tsym.index].a_ti, |
| 950 | &tir); |
| 951 | if ((tir.bt == btNil || tir.bt == btVoid) |
| 952 | && tir.tq0 == tqNil) |
| 953 | type_code = TYPE_CODE_ENUM; |
| 954 | } |
| 955 | nfields++; |
| 956 | if (tsym.value > max_value) |
| 957 | max_value = tsym.value; |
| 958 | break; |
| 959 | |
| 960 | case stBlock: |
| 961 | case stUnion: |
| 962 | case stEnum: |
| 963 | case stStruct: |
| 964 | { |
| 965 | #if 0 |
| 966 | /* This is a no-op; is it trying to tell us something |
| 967 | we should be checking? */ |
| 968 | if (tsym.sc == scVariant); /*UNIMPLEMENTED*/ |
| 969 | #endif |
| 970 | if (tsym.index != 0) |
| 971 | { |
| 972 | /* This is something like a struct within a |
| 973 | struct. Skip over the fields of the inner |
| 974 | struct. The -1 is because the for loop will |
| 975 | increment ext_tsym. */ |
| 976 | ext_tsym = ((char *) ecoff_data (cur_bfd)->external_sym |
| 977 | + ((cur_fdr->isymBase + tsym.index - 1) |
| 978 | * external_sym_size)); |
| 979 | } |
| 980 | } |
| 981 | break; |
| 982 | |
| 983 | case stTypedef: |
| 984 | /* mips cc puts out a typedef for struct x if it is not yet |
| 985 | defined when it encounters |
| 986 | struct y { struct x *xp; }; |
| 987 | Just ignore it. */ |
| 988 | break; |
| 989 | |
| 990 | default: |
| 991 | complain (&block_member_complaint, tsym.st); |
| 992 | } |
| 993 | } |
| 994 | end_of_fields:; |
| 995 | |
| 996 | /* In an stBlock, there is no way to distinguish structs, |
| 997 | unions, and enums at this point. This is a bug in the |
| 998 | original design (that has been fixed with the recent |
| 999 | addition of the stStruct, stUnion, and stEnum symbol |
| 1000 | types.) The way you can tell is if/when you see a variable |
| 1001 | or field of that type. In that case the variable's type |
| 1002 | (in the AUX table) says if the type is struct, union, or |
| 1003 | enum, and points back to the stBlock here. So you can |
| 1004 | patch the tag kind up later - but only if there actually is |
| 1005 | a variable or field of that type. |
| 1006 | |
| 1007 | So until we know for sure, we will guess at this point. |
| 1008 | The heuristic is: |
| 1009 | If the first member has index==indexNil or a void type, |
| 1010 | assume we have an enumeration. |
| 1011 | Otherwise, if there is more than one member, and all |
| 1012 | the members have offset 0, assume we have a union. |
| 1013 | Otherwise, assume we have a struct. |
| 1014 | |
| 1015 | The heuristic could guess wrong in the case of of an |
| 1016 | enumeration with no members or a union with one (or zero) |
| 1017 | members, or when all except the last field of a struct have |
| 1018 | width zero. These are uncommon and/or illegal situations, |
| 1019 | and in any case guessing wrong probably doesn't matter |
| 1020 | much. |
| 1021 | |
| 1022 | But if we later do find out we were wrong, we fixup the tag |
| 1023 | kind. Members of an enumeration must be handled |
| 1024 | differently from struct/union fields, and that is harder to |
| 1025 | patch up, but luckily we shouldn't need to. (If there are |
| 1026 | any enumeration members, we can tell for sure it's an enum |
| 1027 | here.) */ |
| 1028 | |
| 1029 | if (type_code == TYPE_CODE_UNDEF) |
| 1030 | if (nfields > 1 && max_value == 0) |
| 1031 | type_code = TYPE_CODE_UNION; |
| 1032 | else |
| 1033 | type_code = TYPE_CODE_STRUCT; |
| 1034 | |
| 1035 | /* Create a new type or use the pending type. */ |
| 1036 | pend = is_pending_symbol (cur_fdr, ext_sh); |
| 1037 | if (pend == (struct mips_pending *) NULL) |
| 1038 | { |
| 1039 | t = new_type (NULL); |
| 1040 | add_pending (cur_fdr, ext_sh, t); |
| 1041 | } |
| 1042 | else |
| 1043 | t = pend->t; |
| 1044 | |
| 1045 | /* Alpha cc unnamed structs do not get a tag name. */ |
| 1046 | if (sh->iss == 0) |
| 1047 | TYPE_TAG_NAME (t) = NULL; |
| 1048 | else |
| 1049 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, |
| 1050 | "", "", name); |
| 1051 | |
| 1052 | TYPE_CODE (t) = type_code; |
| 1053 | TYPE_LENGTH (t) = sh->value; |
| 1054 | TYPE_NFIELDS (t) = nfields; |
| 1055 | TYPE_FIELDS (t) = f = ((struct field *) |
| 1056 | TYPE_ALLOC (t, |
| 1057 | nfields * sizeof (struct field))); |
| 1058 | |
| 1059 | if (type_code == TYPE_CODE_ENUM) |
| 1060 | { |
| 1061 | /* This is a non-empty enum. */ |
| 1062 | for (ext_tsym = ext_sh + external_sym_size; |
| 1063 | ; |
| 1064 | ext_tsym += external_sym_size) |
| 1065 | { |
| 1066 | SYMR tsym; |
| 1067 | struct symbol *enum_sym; |
| 1068 | |
| 1069 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); |
| 1070 | |
| 1071 | if (tsym.st != stMember) |
| 1072 | break; |
| 1073 | |
| 1074 | f->bitpos = tsym.value; |
| 1075 | f->type = t; |
| 1076 | f->name = (ecoff_data (cur_bfd)->ss |
| 1077 | + cur_fdr->issBase |
| 1078 | + tsym.iss); |
| 1079 | f->bitsize = 0; |
| 1080 | |
| 1081 | enum_sym = ((struct symbol *) |
| 1082 | obstack_alloc (¤t_objfile->symbol_obstack, |
| 1083 | sizeof (struct symbol))); |
| 1084 | memset ((PTR) enum_sym, 0, sizeof (struct symbol)); |
| 1085 | SYMBOL_NAME (enum_sym) = f->name; |
| 1086 | SYMBOL_CLASS (enum_sym) = LOC_CONST; |
| 1087 | SYMBOL_TYPE (enum_sym) = t; |
| 1088 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; |
| 1089 | SYMBOL_VALUE (enum_sym) = tsym.value; |
| 1090 | add_symbol (enum_sym, top_stack->cur_block); |
| 1091 | |
| 1092 | /* Skip the stMembers that we've handled. */ |
| 1093 | count++; |
| 1094 | f++; |
| 1095 | } |
| 1096 | } |
| 1097 | /* make this the current type */ |
| 1098 | top_stack->cur_type = t; |
| 1099 | top_stack->cur_field = 0; |
| 1100 | |
| 1101 | /* Do not create a symbol for alpha cc unnamed structs. */ |
| 1102 | if (sh->iss == 0) |
| 1103 | break; |
| 1104 | s = new_symbol (name); |
| 1105 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; |
| 1106 | SYMBOL_CLASS (s) = LOC_TYPEDEF; |
| 1107 | SYMBOL_VALUE (s) = 0; |
| 1108 | SYMBOL_TYPE (s) = t; |
| 1109 | |
| 1110 | /* gcc puts out an empty struct for an opaque struct definitions. */ |
| 1111 | if (TYPE_NFIELDS (t) == 0) |
| 1112 | { |
| 1113 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; |
| 1114 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 1115 | } |
| 1116 | add_symbol (s, top_stack->cur_block); |
| 1117 | break; |
| 1118 | |
| 1119 | /* End of local variables shared by struct, union, enum, and |
| 1120 | block (as yet unknown struct/union/enum) processing. */ |
| 1121 | } |
| 1122 | |
| 1123 | case_stBlock_code: |
| 1124 | /* beginnning of (code) block. Value of symbol |
| 1125 | is the displacement from procedure start */ |
| 1126 | push_parse_stack (); |
| 1127 | top_stack->blocktype = stBlock; |
| 1128 | b = new_block (top_stack->maxsyms); |
| 1129 | BLOCK_START (b) = sh->value + top_stack->procadr; |
| 1130 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; |
| 1131 | top_stack->cur_block = b; |
| 1132 | add_block (b, top_stack->cur_st); |
| 1133 | break; |
| 1134 | |
| 1135 | case stEnd: /* end (of anything) */ |
| 1136 | if (sh->sc == scInfo || sh->sc == scCommon) |
| 1137 | { |
| 1138 | /* Finished with type */ |
| 1139 | top_stack->cur_type = 0; |
| 1140 | } |
| 1141 | else if (sh->sc == scText && |
| 1142 | (top_stack->blocktype == stProc || |
| 1143 | top_stack->blocktype == stStaticProc)) |
| 1144 | { |
| 1145 | /* Finished with procedure */ |
| 1146 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); |
| 1147 | struct mips_extra_func_info *e; |
| 1148 | struct block *b; |
| 1149 | int i; |
| 1150 | |
| 1151 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ |
| 1152 | |
| 1153 | /* Make up special symbol to contain procedure specific info */ |
| 1154 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
| 1155 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
| 1156 | SYMBOL_CLASS (s) = LOC_CONST; |
| 1157 | SYMBOL_TYPE (s) = builtin_type_void; |
| 1158 | e = ((struct mips_extra_func_info *) |
| 1159 | obstack_alloc (¤t_objfile->symbol_obstack, |
| 1160 | sizeof (struct mips_extra_func_info))); |
| 1161 | SYMBOL_VALUE (s) = (long) e; |
| 1162 | e->numargs = top_stack->numargs; |
| 1163 | add_symbol (s, top_stack->cur_block); |
| 1164 | |
| 1165 | /* Reallocate symbols, saving memory */ |
| 1166 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); |
| 1167 | |
| 1168 | /* f77 emits proc-level with address bounds==[0,0], |
| 1169 | So look for such child blocks, and patch them. */ |
| 1170 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) |
| 1171 | { |
| 1172 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); |
| 1173 | if (BLOCK_SUPERBLOCK (b_bad) == b |
| 1174 | && BLOCK_START (b_bad) == top_stack->procadr |
| 1175 | && BLOCK_END (b_bad) == top_stack->procadr) |
| 1176 | { |
| 1177 | BLOCK_START (b_bad) = BLOCK_START (b); |
| 1178 | BLOCK_END (b_bad) = BLOCK_END (b); |
| 1179 | } |
| 1180 | } |
| 1181 | } |
| 1182 | else if (sh->sc == scText && top_stack->blocktype == stBlock) |
| 1183 | { |
| 1184 | /* End of (code) block. The value of the symbol is the |
| 1185 | displacement from the procedure`s start address of the |
| 1186 | end of this block. */ |
| 1187 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; |
| 1188 | shrink_block (top_stack->cur_block, top_stack->cur_st); |
| 1189 | } |
| 1190 | else if (sh->sc == scText && top_stack->blocktype == stFile) |
| 1191 | { |
| 1192 | /* End of file. Pop parse stack and ignore. Higher |
| 1193 | level code deals with this. */ |
| 1194 | ; |
| 1195 | } |
| 1196 | else |
| 1197 | complain (&stEnd_complaint, sh->sc); |
| 1198 | |
| 1199 | pop_parse_stack (); /* restore previous lexical context */ |
| 1200 | break; |
| 1201 | |
| 1202 | case stMember: /* member of struct or union */ |
| 1203 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; |
| 1204 | f->name = name; |
| 1205 | f->bitpos = sh->value; |
| 1206 | f->bitsize = 0; |
| 1207 | f->type = parse_type (cur_fd, ax + sh->index, &f->bitsize, bigend, name); |
| 1208 | break; |
| 1209 | |
| 1210 | case stTypedef: /* type definition */ |
| 1211 | /* Typedefs for forward declarations and opaque structs from alpha cc |
| 1212 | are handled by cross_ref, skip them. */ |
| 1213 | if (sh->iss == 0) |
| 1214 | break; |
| 1215 | |
| 1216 | /* Parse the type or use the pending type. */ |
| 1217 | pend = is_pending_symbol (cur_fdr, ext_sh); |
| 1218 | if (pend == (struct mips_pending *) NULL) |
| 1219 | { |
| 1220 | t = parse_type (cur_fd, ax + sh->index, (int *)NULL, bigend, name); |
| 1221 | add_pending (cur_fdr, ext_sh, t); |
| 1222 | } |
| 1223 | else |
| 1224 | t = pend->t; |
| 1225 | |
| 1226 | /* mips cc puts out a typedef with the name of the struct for forward |
| 1227 | declarations. These should not go into the symbol table and |
| 1228 | TYPE_NAME should not be set for them. |
| 1229 | They can't be distinguished from an intentional typedef to |
| 1230 | the same name however: |
| 1231 | x.h: |
| 1232 | struct x { int ix; int jx; }; |
| 1233 | struct xx; |
| 1234 | x.c: |
| 1235 | typedef struct x x; |
| 1236 | struct xx {int ixx; int jxx; }; |
| 1237 | generates a cross referencing stTypedef for x and xx. |
| 1238 | The user visible effect of this is that the type of a pointer |
| 1239 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. |
| 1240 | The problem is fixed with alpha cc. */ |
| 1241 | |
| 1242 | s = new_symbol (name); |
| 1243 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 1244 | SYMBOL_CLASS (s) = LOC_TYPEDEF; |
| 1245 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; |
| 1246 | SYMBOL_TYPE (s) = t; |
| 1247 | add_symbol (s, top_stack->cur_block); |
| 1248 | |
| 1249 | /* Incomplete definitions of structs should not get a name. */ |
| 1250 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL |
| 1251 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 |
| 1252 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
| 1253 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
| 1254 | { |
| 1255 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR |
| 1256 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) |
| 1257 | { |
| 1258 | /* If we are giving a name to a type such as "pointer to |
| 1259 | foo" or "function returning foo", we better not set |
| 1260 | the TYPE_NAME. If the program contains "typedef char |
| 1261 | *caddr_t;", we don't want all variables of type char |
| 1262 | * to print as caddr_t. This is not just a |
| 1263 | consequence of GDB's type management; CC and GCC (at |
| 1264 | least through version 2.4) both output variables of |
| 1265 | either type char * or caddr_t with the type |
| 1266 | refering to the stTypedef symbol for caddr_t. If a future |
| 1267 | compiler cleans this up it GDB is not ready for it |
| 1268 | yet, but if it becomes ready we somehow need to |
| 1269 | disable this check (without breaking the PCC/GCC2.4 |
| 1270 | case). |
| 1271 | |
| 1272 | Sigh. |
| 1273 | |
| 1274 | Fortunately, this check seems not to be necessary |
| 1275 | for anything except pointers or functions. */ |
| 1276 | } |
| 1277 | else |
| 1278 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); |
| 1279 | } |
| 1280 | break; |
| 1281 | |
| 1282 | case stFile: /* file name */ |
| 1283 | push_parse_stack (); |
| 1284 | top_stack->blocktype = sh->st; |
| 1285 | break; |
| 1286 | |
| 1287 | /* I`ve never seen these for C */ |
| 1288 | case stRegReloc: |
| 1289 | break; /* register relocation */ |
| 1290 | case stForward: |
| 1291 | break; /* forwarding address */ |
| 1292 | case stConstant: |
| 1293 | break; /* constant */ |
| 1294 | default: |
| 1295 | complain (&unknown_mips_symtype_complaint, sh->st); |
| 1296 | break; |
| 1297 | } |
| 1298 | |
| 1299 | return count; |
| 1300 | } |
| 1301 | |
| 1302 | /* Parse the type information provided in the raw AX entries for |
| 1303 | the symbol SH. Return the bitfield size in BS, in case. |
| 1304 | We must byte-swap the AX entries before we use them; BIGEND says whether |
| 1305 | they are big-endian or little-endian (from fh->fBigendian). */ |
| 1306 | |
| 1307 | static struct type * |
| 1308 | parse_type (fd, ax, bs, bigend, sym_name) |
| 1309 | int fd; |
| 1310 | union aux_ext *ax; |
| 1311 | int *bs; |
| 1312 | int bigend; |
| 1313 | char *sym_name; |
| 1314 | { |
| 1315 | /* Null entries in this map are treated specially */ |
| 1316 | static struct type **map_bt[] = |
| 1317 | { |
| 1318 | &builtin_type_void, /* btNil */ |
| 1319 | 0, /* btAdr */ |
| 1320 | &builtin_type_char, /* btChar */ |
| 1321 | &builtin_type_unsigned_char,/* btUChar */ |
| 1322 | &builtin_type_short, /* btShort */ |
| 1323 | &builtin_type_unsigned_short, /* btUShort */ |
| 1324 | &builtin_type_int, /* btInt */ |
| 1325 | &builtin_type_unsigned_int, /* btUInt */ |
| 1326 | &builtin_type_long, /* btLong */ |
| 1327 | &builtin_type_unsigned_long,/* btULong */ |
| 1328 | &builtin_type_float, /* btFloat */ |
| 1329 | &builtin_type_double, /* btDouble */ |
| 1330 | 0, /* btStruct */ |
| 1331 | 0, /* btUnion */ |
| 1332 | 0, /* btEnum */ |
| 1333 | 0, /* btTypedef */ |
| 1334 | 0, /* btRange */ |
| 1335 | 0, /* btSet */ |
| 1336 | &builtin_type_complex, /* btComplex */ |
| 1337 | &builtin_type_double_complex, /* btDComplex */ |
| 1338 | 0, /* btIndirect */ |
| 1339 | &builtin_type_fixed_dec, /* btFixedDec */ |
| 1340 | &builtin_type_float_dec, /* btFloatDec */ |
| 1341 | &builtin_type_string, /* btString */ |
| 1342 | 0, /* btBit */ |
| 1343 | 0, /* btPicture */ |
| 1344 | &builtin_type_void, /* btVoid */ |
| 1345 | 0, /* DEC C++: Pointer to member */ |
| 1346 | 0, /* DEC C++: Virtual function table */ |
| 1347 | 0, /* DEC C++: Class (Record) */ |
| 1348 | &builtin_type_long, /* btLong64 */ |
| 1349 | &builtin_type_unsigned_long, /* btULong64 */ |
| 1350 | &builtin_type_long_long, /* btLongLong64 */ |
| 1351 | &builtin_type_unsigned_long_long, /* btULongLong64 */ |
| 1352 | &builtin_type_unsigned_long, /* btAdr64 */ |
| 1353 | &builtin_type_long, /* btInt64 */ |
| 1354 | &builtin_type_unsigned_long, /* btUInt64 */ |
| 1355 | }; |
| 1356 | |
| 1357 | TIR t[1]; |
| 1358 | struct type *tp = 0; |
| 1359 | union aux_ext *tax; |
| 1360 | enum type_code type_code = TYPE_CODE_UNDEF; |
| 1361 | |
| 1362 | /* Use aux as a type information record, map its basic type. */ |
| 1363 | tax = ax; |
| 1364 | ecoff_swap_tir_in (bigend, &tax->a_ti, t); |
| 1365 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) |
| 1366 | { |
| 1367 | complain (&basic_type_complaint, t->bt, sym_name); |
| 1368 | return builtin_type_int; |
| 1369 | } |
| 1370 | if (map_bt[t->bt]) |
| 1371 | { |
| 1372 | tp = *map_bt[t->bt]; |
| 1373 | } |
| 1374 | else |
| 1375 | { |
| 1376 | tp = NULL; |
| 1377 | /* Cannot use builtin types -- build our own */ |
| 1378 | switch (t->bt) |
| 1379 | { |
| 1380 | case btAdr: |
| 1381 | tp = lookup_pointer_type (builtin_type_void); |
| 1382 | break; |
| 1383 | case btStruct: |
| 1384 | type_code = TYPE_CODE_STRUCT; |
| 1385 | break; |
| 1386 | case btUnion: |
| 1387 | type_code = TYPE_CODE_UNION; |
| 1388 | break; |
| 1389 | case btEnum: |
| 1390 | type_code = TYPE_CODE_ENUM; |
| 1391 | break; |
| 1392 | case btRange: |
| 1393 | type_code = TYPE_CODE_RANGE; |
| 1394 | break; |
| 1395 | case btSet: |
| 1396 | type_code = TYPE_CODE_SET; |
| 1397 | break; |
| 1398 | case btTypedef: |
| 1399 | /* alpha cc uses this for typedefs. The true type will be |
| 1400 | obtained by crossreferencing below. */ |
| 1401 | type_code = TYPE_CODE_ERROR; |
| 1402 | break; |
| 1403 | default: |
| 1404 | complain (&basic_type_complaint, t->bt, sym_name); |
| 1405 | return builtin_type_int; |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | /* Skip over any further type qualifiers (FIXME). */ |
| 1410 | if (t->continued) |
| 1411 | { |
| 1412 | /* This is the way it would work if the compiler worked */ |
| 1413 | TIR t1[1]; |
| 1414 | do |
| 1415 | { |
| 1416 | ax++; |
| 1417 | ecoff_swap_tir_in (bigend, &ax->a_ti, t1); |
| 1418 | } |
| 1419 | while (t1->continued); |
| 1420 | } |
| 1421 | |
| 1422 | /* Move on to next aux */ |
| 1423 | ax++; |
| 1424 | |
| 1425 | if (t->fBitfield) |
| 1426 | { |
| 1427 | /* Inhibit core dumps with some cfront generated objects that |
| 1428 | corrupt the TIR. */ |
| 1429 | if (bs == (int *)NULL) |
| 1430 | { |
| 1431 | complain (&bad_fbitfield_complaint, sym_name); |
| 1432 | return builtin_type_int; |
| 1433 | } |
| 1434 | *bs = AUX_GET_WIDTH (bigend, ax); |
| 1435 | ax++; |
| 1436 | } |
| 1437 | |
| 1438 | /* All these types really point to some (common) MIPS type |
| 1439 | definition, and only the type-qualifiers fully identify |
| 1440 | them. We'll make the same effort at sharing. */ |
| 1441 | if (t->bt == btStruct || |
| 1442 | t->bt == btUnion || |
| 1443 | t->bt == btEnum || |
| 1444 | |
| 1445 | /* btSet (I think) implies that the name is a tag name, not a typedef |
| 1446 | name. This apparently is a MIPS extension for C sets. */ |
| 1447 | t->bt == btSet) |
| 1448 | { |
| 1449 | char *name; |
| 1450 | |
| 1451 | /* Try to cross reference this type, build new type on failure. */ |
| 1452 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); |
| 1453 | if (tp == (struct type *) NULL) |
| 1454 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); |
| 1455 | |
| 1456 | /* Make sure that TYPE_CODE(tp) has an expected type code. |
| 1457 | Any type may be returned from cross_ref if file indirect entries |
| 1458 | are corrupted. */ |
| 1459 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
| 1460 | && TYPE_CODE (tp) != TYPE_CODE_UNION |
| 1461 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) |
| 1462 | { |
| 1463 | complain (&unexpected_type_code_complaint, sym_name); |
| 1464 | } |
| 1465 | else |
| 1466 | { |
| 1467 | |
| 1468 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
| 1469 | exception is if we guessed wrong re struct/union/enum. |
| 1470 | But for struct vs. union a wrong guess is harmless, so |
| 1471 | don't complain(). */ |
| 1472 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM |
| 1473 | && type_code != TYPE_CODE_ENUM) |
| 1474 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM |
| 1475 | && type_code == TYPE_CODE_ENUM)) |
| 1476 | { |
| 1477 | complain (&bad_tag_guess_complaint, sym_name); |
| 1478 | } |
| 1479 | |
| 1480 | if (TYPE_CODE (tp) != type_code) |
| 1481 | { |
| 1482 | TYPE_CODE (tp) = type_code; |
| 1483 | } |
| 1484 | |
| 1485 | /* Do not set the tag name if it is a compiler generated tag name |
| 1486 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
| 1487 | if (name[0] == '.' || name[0] == '\0') |
| 1488 | TYPE_TAG_NAME (tp) = NULL; |
| 1489 | else if (TYPE_TAG_NAME (tp) == NULL |
| 1490 | || !STREQ (TYPE_TAG_NAME (tp), name)) |
| 1491 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), |
| 1492 | ¤t_objfile->type_obstack); |
| 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | /* All these types really point to some (common) MIPS type |
| 1497 | definition, and only the type-qualifiers fully identify |
| 1498 | them. We'll make the same effort at sharing. |
| 1499 | FIXME: btIndirect cannot happen here as it is handled by the |
| 1500 | switch t->bt above. And we are not doing any guessing on range types. */ |
| 1501 | if (t->bt == btIndirect || |
| 1502 | t->bt == btRange) |
| 1503 | { |
| 1504 | char *name; |
| 1505 | |
| 1506 | /* Try to cross reference this type, build new type on failure. */ |
| 1507 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); |
| 1508 | if (tp == (struct type *) NULL) |
| 1509 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); |
| 1510 | |
| 1511 | /* Make sure that TYPE_CODE(tp) has an expected type code. |
| 1512 | Any type may be returned from cross_ref if file indirect entries |
| 1513 | are corrupted. */ |
| 1514 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
| 1515 | { |
| 1516 | complain (&unexpected_type_code_complaint, sym_name); |
| 1517 | } |
| 1518 | else |
| 1519 | { |
| 1520 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
| 1521 | exception is if we guessed wrong re struct/union/enum. */ |
| 1522 | if (TYPE_CODE (tp) != type_code) |
| 1523 | { |
| 1524 | complain (&bad_tag_guess_complaint, sym_name); |
| 1525 | TYPE_CODE (tp) = type_code; |
| 1526 | } |
| 1527 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) |
| 1528 | TYPE_NAME (tp) = obsavestring (name, strlen (name), |
| 1529 | ¤t_objfile->type_obstack); |
| 1530 | } |
| 1531 | } |
| 1532 | if (t->bt == btTypedef) |
| 1533 | { |
| 1534 | char *name; |
| 1535 | |
| 1536 | /* Try to cross reference this type, it should succeed. */ |
| 1537 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); |
| 1538 | if (tp == (struct type *) NULL) |
| 1539 | { |
| 1540 | complain (&unable_to_cross_ref_complaint, sym_name); |
| 1541 | tp = builtin_type_int; |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | /* Deal with range types */ |
| 1546 | if (t->bt == btRange) |
| 1547 | { |
| 1548 | TYPE_NFIELDS (tp) = 2; |
| 1549 | TYPE_FIELDS (tp) = ((struct field *) |
| 1550 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); |
| 1551 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), |
| 1552 | ¤t_objfile->type_obstack); |
| 1553 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
| 1554 | ax++; |
| 1555 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), |
| 1556 | ¤t_objfile->type_obstack); |
| 1557 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
| 1558 | ax++; |
| 1559 | } |
| 1560 | |
| 1561 | /* Parse all the type qualifiers now. If there are more |
| 1562 | than 6 the game will continue in the next aux */ |
| 1563 | |
| 1564 | #define PARSE_TQ(tq) \ |
| 1565 | if (t->tq != tqNil) ax += upgrade_type(fd, &tp, t->tq, ax, bigend); |
| 1566 | |
| 1567 | again:PARSE_TQ (tq0); |
| 1568 | PARSE_TQ (tq1); |
| 1569 | PARSE_TQ (tq2); |
| 1570 | PARSE_TQ (tq3); |
| 1571 | PARSE_TQ (tq4); |
| 1572 | PARSE_TQ (tq5); |
| 1573 | #undef PARSE_TQ |
| 1574 | |
| 1575 | if (t->continued) |
| 1576 | { |
| 1577 | tax++; |
| 1578 | ecoff_swap_tir_in (bigend, &tax->a_ti, t); |
| 1579 | goto again; |
| 1580 | } |
| 1581 | return tp; |
| 1582 | } |
| 1583 | |
| 1584 | /* Make up a complex type from a basic one. Type is passed by |
| 1585 | reference in TPP and side-effected as necessary. The type |
| 1586 | qualifier TQ says how to handle the aux symbols at AX for |
| 1587 | the symbol SX we are currently analyzing. BIGEND says whether |
| 1588 | aux symbols are big-endian or little-endian. |
| 1589 | Returns the number of aux symbols we parsed. */ |
| 1590 | |
| 1591 | static int |
| 1592 | upgrade_type (fd, tpp, tq, ax, bigend) |
| 1593 | int fd; |
| 1594 | struct type **tpp; |
| 1595 | int tq; |
| 1596 | union aux_ext *ax; |
| 1597 | int bigend; |
| 1598 | { |
| 1599 | int off; |
| 1600 | struct type *t; |
| 1601 | |
| 1602 | /* Used in array processing */ |
| 1603 | int rf, id; |
| 1604 | FDR *fh; |
| 1605 | struct type *range; |
| 1606 | struct type *indx; |
| 1607 | int lower, upper; |
| 1608 | RNDXR rndx; |
| 1609 | |
| 1610 | switch (tq) |
| 1611 | { |
| 1612 | case tqPtr: |
| 1613 | t = lookup_pointer_type (*tpp); |
| 1614 | *tpp = t; |
| 1615 | return 0; |
| 1616 | |
| 1617 | case tqProc: |
| 1618 | t = lookup_function_type (*tpp); |
| 1619 | *tpp = t; |
| 1620 | return 0; |
| 1621 | |
| 1622 | case tqArray: |
| 1623 | off = 0; |
| 1624 | |
| 1625 | /* Determine and record the domain type (type of index) */ |
| 1626 | ecoff_swap_rndx_in (bigend, &ax->a_rndx, &rndx); |
| 1627 | id = rndx.index; |
| 1628 | rf = rndx.rfd; |
| 1629 | if (rf == 0xfff) |
| 1630 | { |
| 1631 | ax++; |
| 1632 | rf = AUX_GET_ISYM (bigend, ax); |
| 1633 | off++; |
| 1634 | } |
| 1635 | fh = get_rfd (fd, rf); |
| 1636 | |
| 1637 | indx = parse_type (fd, |
| 1638 | (ecoff_data (cur_bfd)->external_aux |
| 1639 | + fh->iauxBase |
| 1640 | + id), |
| 1641 | (int *) NULL, bigend, "<array index>"); |
| 1642 | |
| 1643 | /* Get the bounds, and create the array type. */ |
| 1644 | ax++; |
| 1645 | lower = AUX_GET_DNLOW (bigend, ax); |
| 1646 | ax++; |
| 1647 | upper = AUX_GET_DNHIGH (bigend, ax); |
| 1648 | ax++; |
| 1649 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ |
| 1650 | |
| 1651 | range = create_range_type ((struct type *) NULL, indx, |
| 1652 | lower, upper); |
| 1653 | |
| 1654 | t = create_array_type ((struct type *) NULL, *tpp, range); |
| 1655 | |
| 1656 | /* Check whether supplied array element bit size matches |
| 1657 | the known size of the element type. If this complaint |
| 1658 | ends up not happening, we can remove this code. It's |
| 1659 | here because we aren't sure we understand this *&%&$ |
| 1660 | symbol format. */ |
| 1661 | id = TYPE_LENGTH (TYPE_TARGET_TYPE (t)) << 3; /* bitsize */ |
| 1662 | if (id == 0) |
| 1663 | { |
| 1664 | /* Most likely an undefined type */ |
| 1665 | id = rf; |
| 1666 | TYPE_LENGTH (TYPE_TARGET_TYPE (t)) = id >> 3; |
| 1667 | } |
| 1668 | if (id != rf) |
| 1669 | complain (&array_bitsize_complaint, rf); |
| 1670 | |
| 1671 | *tpp = t; |
| 1672 | return 4 + off; |
| 1673 | |
| 1674 | case tqVol: |
| 1675 | /* Volatile -- currently ignored */ |
| 1676 | return 0; |
| 1677 | |
| 1678 | case tqConst: |
| 1679 | /* Const -- currently ignored */ |
| 1680 | return 0; |
| 1681 | |
| 1682 | default: |
| 1683 | complain (&unknown_type_qual_complaint, tq); |
| 1684 | return 0; |
| 1685 | } |
| 1686 | } |
| 1687 | |
| 1688 | |
| 1689 | /* Parse a procedure descriptor record PR. Note that the procedure is |
| 1690 | parsed _after_ the local symbols, now we just insert the extra |
| 1691 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has |
| 1692 | already been placed in the procedure's main block. Note also that |
| 1693 | images that have been partially stripped (ld -x) have been deprived |
| 1694 | of local symbols, and we have to cope with them here. FIRST_OFF is |
| 1695 | the offset of the first procedure for this FDR; we adjust the |
| 1696 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab |
| 1697 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol |
| 1698 | in question, or NULL to use top_stack->cur_block. */ |
| 1699 | |
| 1700 | static void parse_procedure PARAMS ((PDR *, struct symtab *, unsigned long)); |
| 1701 | |
| 1702 | static void |
| 1703 | parse_procedure (pr, search_symtab, first_off) |
| 1704 | PDR *pr; |
| 1705 | struct symtab *search_symtab; |
| 1706 | unsigned long first_off; |
| 1707 | { |
| 1708 | struct symbol *s, *i; |
| 1709 | struct block *b; |
| 1710 | struct mips_extra_func_info *e; |
| 1711 | char *sh_name; |
| 1712 | |
| 1713 | /* Simple rule to find files linked "-x" */ |
| 1714 | if (cur_fdr->rss == -1) |
| 1715 | { |
| 1716 | if (pr->isym == -1) |
| 1717 | { |
| 1718 | /* Static procedure at address pr->adr. Sigh. */ |
| 1719 | complain (&pdr_static_symbol_complaint, pr->adr); |
| 1720 | return; |
| 1721 | } |
| 1722 | else |
| 1723 | { |
| 1724 | /* external */ |
| 1725 | EXTR she; |
| 1726 | |
| 1727 | (*ecoff_backend (cur_bfd)->swap_ext_in) |
| 1728 | (cur_bfd, |
| 1729 | ((char *) ecoff_data (cur_bfd)->external_ext |
| 1730 | + pr->isym * ecoff_backend (cur_bfd)->external_ext_size), |
| 1731 | &she); |
| 1732 | sh_name = ecoff_data (cur_bfd)->ssext + she.asym.iss; |
| 1733 | } |
| 1734 | } |
| 1735 | else |
| 1736 | { |
| 1737 | /* Full symbols */ |
| 1738 | SYMR sh; |
| 1739 | |
| 1740 | (*ecoff_backend (cur_bfd)->swap_sym_in) |
| 1741 | (cur_bfd, |
| 1742 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 1743 | + ((cur_fdr->isymBase + pr->isym) |
| 1744 | * ecoff_backend (cur_bfd)->external_sym_size)), |
| 1745 | &sh); |
| 1746 | sh_name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.iss; |
| 1747 | } |
| 1748 | |
| 1749 | if (search_symtab != NULL) |
| 1750 | { |
| 1751 | #if 0 |
| 1752 | /* This loses both in the case mentioned (want a static, find a global), |
| 1753 | but also if we are looking up a non-mangled name which happens to |
| 1754 | match the name of a mangled function. */ |
| 1755 | /* We have to save the cur_fdr across the call to lookup_symbol. |
| 1756 | If the pdr is for a static function and if a global function with |
| 1757 | the same name exists, lookup_symbol will eventually read in the symtab |
| 1758 | for the global function and clobber cur_fdr. */ |
| 1759 | FDR *save_cur_fdr = cur_fdr; |
| 1760 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); |
| 1761 | cur_fdr = save_cur_fdr; |
| 1762 | #else |
| 1763 | s = mylookup_symbol |
| 1764 | (sh_name, |
| 1765 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), |
| 1766 | VAR_NAMESPACE, |
| 1767 | LOC_BLOCK); |
| 1768 | #endif |
| 1769 | } |
| 1770 | else |
| 1771 | s = mylookup_symbol (sh_name, top_stack->cur_block, |
| 1772 | VAR_NAMESPACE, LOC_BLOCK); |
| 1773 | |
| 1774 | if (s != 0) |
| 1775 | { |
| 1776 | b = SYMBOL_BLOCK_VALUE (s); |
| 1777 | } |
| 1778 | else |
| 1779 | { |
| 1780 | complain (&pdr_for_nonsymbol_complaint, sh_name); |
| 1781 | #if 1 |
| 1782 | return; |
| 1783 | #else |
| 1784 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ |
| 1785 | s = new_symbol (sh_name); |
| 1786 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 1787 | SYMBOL_CLASS (s) = LOC_BLOCK; |
| 1788 | /* Donno its type, hope int is ok */ |
| 1789 | SYMBOL_TYPE (s) = lookup_function_type (builtin_type_int); |
| 1790 | add_symbol (s, top_stack->cur_block); |
| 1791 | /* Wont have symbols for this one */ |
| 1792 | b = new_block (2); |
| 1793 | SYMBOL_BLOCK_VALUE (s) = b; |
| 1794 | BLOCK_FUNCTION (b) = s; |
| 1795 | BLOCK_START (b) = pr->adr; |
| 1796 | /* BOUND used to be the end of procedure's text, but the |
| 1797 | argument is no longer passed in. */ |
| 1798 | BLOCK_END (b) = bound; |
| 1799 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; |
| 1800 | add_block (b, top_stack->cur_st); |
| 1801 | #endif |
| 1802 | } |
| 1803 | |
| 1804 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); |
| 1805 | |
| 1806 | if (i) |
| 1807 | { |
| 1808 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); |
| 1809 | e->pdr = *pr; |
| 1810 | e->pdr.isym = (long) s; |
| 1811 | e->pdr.adr += cur_fdr->adr - first_off; |
| 1812 | |
| 1813 | /* Correct incorrect setjmp procedure descriptor from the library |
| 1814 | to make backtrace through setjmp work. */ |
| 1815 | if (e->pdr.pcreg == 0 && strcmp (sh_name, "setjmp") == 0) |
| 1816 | { |
| 1817 | complain (&bad_setjmp_pdr_complaint, 0); |
| 1818 | e->pdr.pcreg = RA_REGNUM; |
| 1819 | e->pdr.regmask = 0x80000000; |
| 1820 | e->pdr.regoffset = -4; |
| 1821 | } |
| 1822 | } |
| 1823 | } |
| 1824 | |
| 1825 | /* Parse the external symbol ES. Just call parse_symbol() after |
| 1826 | making sure we know where the aux are for it. For procedures, |
| 1827 | parsing of the PDRs has already provided all the needed |
| 1828 | information, we only parse them if SKIP_PROCEDURES is false, |
| 1829 | and only if this causes no symbol duplication. |
| 1830 | BIGEND says whether aux entries are big-endian or little-endian. |
| 1831 | |
| 1832 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
| 1833 | |
| 1834 | static void |
| 1835 | parse_external (es, skip_procedures, bigend) |
| 1836 | EXTR *es; |
| 1837 | int skip_procedures; |
| 1838 | int bigend; |
| 1839 | { |
| 1840 | union aux_ext *ax; |
| 1841 | |
| 1842 | if (es->ifd != ifdNil) |
| 1843 | { |
| 1844 | cur_fd = es->ifd; |
| 1845 | cur_fdr = ecoff_data (cur_bfd)->fdr + cur_fd; |
| 1846 | ax = ecoff_data (cur_bfd)->external_aux + cur_fdr->iauxBase; |
| 1847 | } |
| 1848 | else |
| 1849 | { |
| 1850 | cur_fdr = ecoff_data (cur_bfd)->fdr; |
| 1851 | ax = 0; |
| 1852 | } |
| 1853 | |
| 1854 | /* Reading .o files */ |
| 1855 | if (es->asym.sc == scUndefined || es->asym.sc == scNil) |
| 1856 | { |
| 1857 | char *what; |
| 1858 | switch (es->asym.st) |
| 1859 | { |
| 1860 | case stStaticProc: |
| 1861 | case stProc: |
| 1862 | what = "procedure"; |
| 1863 | n_undef_procs++; |
| 1864 | break; |
| 1865 | case stGlobal: |
| 1866 | what = "variable"; |
| 1867 | n_undef_vars++; |
| 1868 | break; |
| 1869 | case stLabel: |
| 1870 | what = "label"; |
| 1871 | n_undef_labels++; |
| 1872 | break; |
| 1873 | default: |
| 1874 | what = "symbol"; |
| 1875 | break; |
| 1876 | } |
| 1877 | n_undef_symbols++; |
| 1878 | /* FIXME: Turn this into a complaint? */ |
| 1879 | if (info_verbose) |
| 1880 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", |
| 1881 | what, |
| 1882 | ecoff_data (cur_bfd)->ssext + es->asym.iss, |
| 1883 | fdr_name (cur_fdr)); |
| 1884 | return; |
| 1885 | } |
| 1886 | |
| 1887 | switch (es->asym.st) |
| 1888 | { |
| 1889 | case stProc: |
| 1890 | /* If we have full symbols we do not need more */ |
| 1891 | if (skip_procedures) |
| 1892 | return; |
| 1893 | if (mylookup_symbol (ecoff_data (cur_bfd)->ssext + es->asym.iss, |
| 1894 | top_stack->cur_block, |
| 1895 | VAR_NAMESPACE, LOC_BLOCK)) |
| 1896 | break; |
| 1897 | /* fall through */ |
| 1898 | case stGlobal: |
| 1899 | case stLabel: |
| 1900 | /* Note that the case of a symbol with indexNil must be handled |
| 1901 | anyways by parse_symbol(). */ |
| 1902 | parse_symbol (&es->asym, ax, (char *) NULL, bigend); |
| 1903 | break; |
| 1904 | default: |
| 1905 | break; |
| 1906 | } |
| 1907 | } |
| 1908 | |
| 1909 | /* Parse the line number info for file descriptor FH into |
| 1910 | GDB's linetable LT. MIPS' encoding requires a little bit |
| 1911 | of magic to get things out. Note also that MIPS' line |
| 1912 | numbers can go back and forth, apparently we can live |
| 1913 | with that and do not need to reorder our linetables */ |
| 1914 | |
| 1915 | static void |
| 1916 | parse_lines (fh, pr, lt) |
| 1917 | FDR *fh; |
| 1918 | PDR *pr; |
| 1919 | struct linetable *lt; |
| 1920 | { |
| 1921 | unsigned char *base; |
| 1922 | int j, k; |
| 1923 | int delta, count, lineno = 0; |
| 1924 | unsigned long first_off = pr->adr; |
| 1925 | |
| 1926 | if (fh->cbLine == 0) |
| 1927 | return; |
| 1928 | |
| 1929 | base = ecoff_data (cur_bfd)->line + fh->cbLineOffset; |
| 1930 | |
| 1931 | /* Scan by procedure descriptors */ |
| 1932 | k = 0; |
| 1933 | for (j = 0; j < fh->cpd; j++, pr++) |
| 1934 | { |
| 1935 | long l, halt; |
| 1936 | unsigned long adr; |
| 1937 | |
| 1938 | /* No code for this one */ |
| 1939 | if (pr->iline == ilineNil || |
| 1940 | pr->lnLow == -1 || pr->lnHigh == -1) |
| 1941 | continue; |
| 1942 | |
| 1943 | /* Aurgh! To know where to stop expanding we must look-ahead. */ |
| 1944 | for (l = 1; l < (fh->cpd - j); l++) |
| 1945 | if (pr[l].iline != -1) |
| 1946 | break; |
| 1947 | if (l == (fh->cpd - j)) |
| 1948 | halt = fh->cline; |
| 1949 | else |
| 1950 | halt = pr[l].iline; |
| 1951 | |
| 1952 | /* When procedures are moved around the linenumbers are |
| 1953 | attributed to the next procedure up. */ |
| 1954 | if (pr->iline >= halt) |
| 1955 | continue; |
| 1956 | |
| 1957 | base = ecoff_data (cur_bfd)->line + fh->cbLineOffset + pr->cbLineOffset; |
| 1958 | adr = fh->adr + pr->adr - first_off; |
| 1959 | l = adr >> 2; /* in words */ |
| 1960 | halt += (adr >> 2) - pr->iline; |
| 1961 | for (lineno = pr->lnLow; l < halt;) |
| 1962 | { |
| 1963 | count = *base & 0x0f; |
| 1964 | delta = *base++ >> 4; |
| 1965 | if (delta >= 8) |
| 1966 | delta -= 16; |
| 1967 | if (delta == -8) |
| 1968 | { |
| 1969 | delta = (base[0] << 8) | base[1]; |
| 1970 | if (delta >= 0x8000) |
| 1971 | delta -= 0x10000; |
| 1972 | base += 2; |
| 1973 | } |
| 1974 | lineno += delta; /* first delta is 0 */ |
| 1975 | k = add_line (lt, lineno, l, k); |
| 1976 | l += count + 1; |
| 1977 | } |
| 1978 | } |
| 1979 | } |
| 1980 | \f |
| 1981 | /* Master parsing procedure for first-pass reading of file symbols |
| 1982 | into a partial_symtab. */ |
| 1983 | |
| 1984 | static void |
| 1985 | parse_partial_symbols (objfile, section_offsets) |
| 1986 | struct objfile *objfile; |
| 1987 | struct section_offsets *section_offsets; |
| 1988 | { |
| 1989 | const struct ecoff_backend_data * const backend = ecoff_backend (cur_bfd); |
| 1990 | const bfd_size_type external_sym_size = backend->external_sym_size; |
| 1991 | const bfd_size_type external_rfd_size = backend->external_rfd_size; |
| 1992 | const bfd_size_type external_ext_size = backend->external_ext_size; |
| 1993 | void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *)) |
| 1994 | = backend->swap_ext_in; |
| 1995 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) |
| 1996 | = backend->swap_sym_in; |
| 1997 | void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *)) |
| 1998 | = backend->swap_rfd_in; |
| 1999 | int f_idx, s_idx; |
| 2000 | HDRR *hdr = &ecoff_data (cur_bfd)->symbolic_header; |
| 2001 | /* Running pointers */ |
| 2002 | FDR *fh; |
| 2003 | char *ext_out; |
| 2004 | char *ext_out_end; |
| 2005 | EXTR *ext_block; |
| 2006 | register EXTR *ext_in; |
| 2007 | EXTR *ext_in_end; |
| 2008 | SYMR sh; |
| 2009 | struct partial_symtab *pst; |
| 2010 | |
| 2011 | int past_first_source_file = 0; |
| 2012 | |
| 2013 | /* List of current psymtab's include files */ |
| 2014 | char **psymtab_include_list; |
| 2015 | int includes_allocated; |
| 2016 | int includes_used; |
| 2017 | EXTR *extern_tab; |
| 2018 | struct pst_map *fdr_to_pst; |
| 2019 | /* Index within current psymtab dependency list */ |
| 2020 | struct partial_symtab **dependency_list; |
| 2021 | int dependencies_used, dependencies_allocated; |
| 2022 | struct cleanup *old_chain; |
| 2023 | char *name; |
| 2024 | enum language prev_language; |
| 2025 | |
| 2026 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, |
| 2027 | sizeof (EXTR) * hdr->iextMax); |
| 2028 | |
| 2029 | includes_allocated = 30; |
| 2030 | includes_used = 0; |
| 2031 | psymtab_include_list = (char **) alloca (includes_allocated * |
| 2032 | sizeof (char *)); |
| 2033 | next_symbol_text_func = mips_next_symbol_text; |
| 2034 | |
| 2035 | dependencies_allocated = 30; |
| 2036 | dependencies_used = 0; |
| 2037 | dependency_list = |
| 2038 | (struct partial_symtab **) alloca (dependencies_allocated * |
| 2039 | sizeof (struct partial_symtab *)); |
| 2040 | |
| 2041 | last_source_file = NULL; |
| 2042 | |
| 2043 | /* |
| 2044 | * Big plan: |
| 2045 | * |
| 2046 | * Only parse the Local and External symbols, and the Relative FDR. |
| 2047 | * Fixup enough of the loader symtab to be able to use it. |
| 2048 | * Allocate space only for the file's portions we need to |
| 2049 | * look at. (XXX) |
| 2050 | */ |
| 2051 | |
| 2052 | max_gdbinfo = 0; |
| 2053 | max_glevel = MIN_GLEVEL; |
| 2054 | |
| 2055 | /* Allocate the map FDR -> PST. |
| 2056 | Minor hack: -O3 images might claim some global data belongs |
| 2057 | to FDR -1. We`ll go along with that */ |
| 2058 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); |
| 2059 | old_chain = make_cleanup (free, fdr_to_pst); |
| 2060 | fdr_to_pst++; |
| 2061 | { |
| 2062 | struct partial_symtab *pst = new_psymtab ("", objfile); |
| 2063 | fdr_to_pst[-1].pst = pst; |
| 2064 | FDR_IDX (pst) = -1; |
| 2065 | } |
| 2066 | |
| 2067 | /* Allocate the global pending list. */ |
| 2068 | ECOFF_PENDING_LIST (objfile) = |
| 2069 | ((struct mips_pending **) |
| 2070 | obstack_alloc (&objfile->psymbol_obstack, |
| 2071 | hdr->ifdMax * sizeof (struct mips_pending *))); |
| 2072 | memset ((PTR) ECOFF_PENDING_LIST (objfile), 0, |
| 2073 | hdr->ifdMax * sizeof (struct mips_pending *)); |
| 2074 | |
| 2075 | /* Pass 0 over external syms: swap them in. */ |
| 2076 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); |
| 2077 | make_cleanup (free, ext_block); |
| 2078 | |
| 2079 | ext_out = (char *) ecoff_data (cur_bfd)->external_ext; |
| 2080 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; |
| 2081 | ext_in = ext_block; |
| 2082 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) |
| 2083 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); |
| 2084 | |
| 2085 | /* Pass 1 over external syms: Presize and partition the list */ |
| 2086 | ext_in = ext_block; |
| 2087 | ext_in_end = ext_in + hdr->iextMax; |
| 2088 | for (; ext_in < ext_in_end; ext_in++) |
| 2089 | fdr_to_pst[ext_in->ifd].n_globals++; |
| 2090 | |
| 2091 | /* Pass 1.5 over files: partition out global symbol space */ |
| 2092 | s_idx = 0; |
| 2093 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) |
| 2094 | { |
| 2095 | fdr_to_pst[f_idx].globals_offset = s_idx; |
| 2096 | s_idx += fdr_to_pst[f_idx].n_globals; |
| 2097 | fdr_to_pst[f_idx].n_globals = 0; |
| 2098 | } |
| 2099 | |
| 2100 | /* Pass 2 over external syms: fill in external symbols */ |
| 2101 | ext_in = ext_block; |
| 2102 | ext_in_end = ext_in + hdr->iextMax; |
| 2103 | for (; ext_in < ext_in_end; ext_in++) |
| 2104 | { |
| 2105 | enum minimal_symbol_type ms_type = mst_text; |
| 2106 | |
| 2107 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
| 2108 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; |
| 2109 | |
| 2110 | if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scNil) |
| 2111 | continue; |
| 2112 | |
| 2113 | name = ecoff_data (cur_bfd)->ssext + ext_in->asym.iss; |
| 2114 | switch (ext_in->asym.st) |
| 2115 | { |
| 2116 | case stProc: |
| 2117 | break; |
| 2118 | case stStaticProc: |
| 2119 | ms_type = mst_file_text; |
| 2120 | break; |
| 2121 | case stGlobal: |
| 2122 | if (ext_in->asym.sc == scData |
| 2123 | || ext_in->asym.sc == scSData |
| 2124 | || ext_in->asym.sc == scRData) |
| 2125 | ms_type = mst_data; |
| 2126 | else |
| 2127 | ms_type = mst_bss; |
| 2128 | break; |
| 2129 | case stLabel: |
| 2130 | if (ext_in->asym.sc == scAbs) |
| 2131 | ms_type = mst_abs; |
| 2132 | else if (ext_in->asym.sc == scText) |
| 2133 | ms_type = mst_text; |
| 2134 | else if (ext_in->asym.sc == scData |
| 2135 | || ext_in->asym.sc == scSData |
| 2136 | || ext_in->asym.sc == scRData) |
| 2137 | ms_type = mst_data; |
| 2138 | else |
| 2139 | ms_type = mst_bss; |
| 2140 | break; |
| 2141 | default: |
| 2142 | ms_type = mst_unknown; |
| 2143 | complain (&unknown_ext_complaint, name); |
| 2144 | } |
| 2145 | prim_record_minimal_symbol (name, ext_in->asym.value, ms_type); |
| 2146 | } |
| 2147 | |
| 2148 | /* Pass 3 over files, over local syms: fill in static symbols */ |
| 2149 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
| 2150 | { |
| 2151 | struct partial_symtab *save_pst; |
| 2152 | EXTR *ext_ptr; |
| 2153 | |
| 2154 | cur_fdr = fh = ecoff_data (cur_bfd)->fdr + f_idx; |
| 2155 | |
| 2156 | if (fh->csym == 0) |
| 2157 | { |
| 2158 | fdr_to_pst[f_idx].pst = NULL; |
| 2159 | continue; |
| 2160 | } |
| 2161 | pst = start_psymtab_common (objfile, section_offsets, |
| 2162 | fdr_name (fh), |
| 2163 | fh->cpd ? fh->adr : 0, |
| 2164 | objfile->global_psymbols.next, |
| 2165 | objfile->static_psymbols.next); |
| 2166 | pst->read_symtab_private = ((char *) |
| 2167 | obstack_alloc (&objfile->psymbol_obstack, |
| 2168 | sizeof (struct symloc))); |
| 2169 | memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc)); |
| 2170 | |
| 2171 | save_pst = pst; |
| 2172 | FDR_IDX (pst) = f_idx; |
| 2173 | CUR_BFD (pst) = cur_bfd; |
| 2174 | |
| 2175 | /* The way to turn this into a symtab is to call... */ |
| 2176 | pst->read_symtab = mipscoff_psymtab_to_symtab; |
| 2177 | |
| 2178 | /* Set up language for the pst. |
| 2179 | The language from the FDR is used if it is unambigious (e.g. cfront |
| 2180 | with native cc and g++ will set the language to C). |
| 2181 | Otherwise we have to deduce the language from the filename. |
| 2182 | Native ecoff has every header file in a separate FDR, so |
| 2183 | deduce_language_from_filename will return language_unknown for |
| 2184 | a header file, which is not what we want. |
| 2185 | But the FDRs for the header files are after the FDR for the source |
| 2186 | file, so we can assign the language of the source file to the |
| 2187 | following header files. Then we save the language in the private |
| 2188 | pst data so that we can reuse it when building symtabs. */ |
| 2189 | prev_language = psymtab_language; |
| 2190 | |
| 2191 | switch (fh->lang) |
| 2192 | { |
| 2193 | case langCplusplusV2: |
| 2194 | psymtab_language = language_cplus; |
| 2195 | break; |
| 2196 | default: |
| 2197 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); |
| 2198 | break; |
| 2199 | } |
| 2200 | if (psymtab_language == language_unknown) |
| 2201 | psymtab_language = prev_language; |
| 2202 | PST_PRIVATE (pst)->pst_language = psymtab_language; |
| 2203 | |
| 2204 | pst->texthigh = pst->textlow; |
| 2205 | |
| 2206 | /* For stabs-in-ecoff files, the second symbol must be @stab. |
| 2207 | This symbol is emitted by mips-tfile to signal that the |
| 2208 | current object file uses encapsulated stabs instead of mips |
| 2209 | ecoff for local symbols. (It is the second symbol because |
| 2210 | the first symbol is the stFile used to signal the start of a |
| 2211 | file). */ |
| 2212 | processing_gcc_compilation = 0; |
| 2213 | if (fh->csym >= 2) |
| 2214 | { |
| 2215 | (*swap_sym_in) (cur_bfd, |
| 2216 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2217 | + (fh->isymBase + 1) * external_sym_size), |
| 2218 | &sh); |
| 2219 | if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss, |
| 2220 | stabs_symbol)) |
| 2221 | processing_gcc_compilation = 2; |
| 2222 | } |
| 2223 | |
| 2224 | if (processing_gcc_compilation != 0) |
| 2225 | { |
| 2226 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) |
| 2227 | { |
| 2228 | int type_code; |
| 2229 | char *namestring; |
| 2230 | |
| 2231 | (*swap_sym_in) (cur_bfd, |
| 2232 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2233 | + (fh->isymBase + cur_sdx) * external_sym_size), |
| 2234 | &sh); |
| 2235 | type_code = ECOFF_UNMARK_STAB (sh.index); |
| 2236 | if (!ECOFF_IS_STAB (&sh)) |
| 2237 | { |
| 2238 | if (sh.st == stProc || sh.st == stStaticProc) |
| 2239 | { |
| 2240 | long procaddr = sh.value; |
| 2241 | long isym; |
| 2242 | |
| 2243 | |
| 2244 | isym = AUX_GET_ISYM (fh->fBigendian, |
| 2245 | (ecoff_data (cur_bfd)->external_aux |
| 2246 | + fh->iauxBase |
| 2247 | + sh.index)); |
| 2248 | (*swap_sym_in) (cur_bfd, |
| 2249 | (((char *) |
| 2250 | ecoff_data (cur_bfd)->external_sym) |
| 2251 | + ((fh->isymBase + isym - 1) |
| 2252 | * external_sym_size)), |
| 2253 | &sh); |
| 2254 | if (sh.st == stEnd) |
| 2255 | { |
| 2256 | long high = procaddr + sh.value; |
| 2257 | if (high > pst->texthigh) |
| 2258 | pst->texthigh = high; |
| 2259 | } |
| 2260 | } |
| 2261 | continue; |
| 2262 | } |
| 2263 | #define SET_NAMESTRING() \ |
| 2264 | namestring = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss |
| 2265 | #define CUR_SYMBOL_TYPE type_code |
| 2266 | #define CUR_SYMBOL_VALUE sh.value |
| 2267 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
| 2268 | pst = save_pst |
| 2269 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0 |
| 2270 | #define HANDLE_RBRAC(val) \ |
| 2271 | if ((val) > save_pst->texthigh) save_pst->texthigh = (val); |
| 2272 | #include "partial-stab.h" |
| 2273 | } |
| 2274 | } |
| 2275 | else |
| 2276 | { |
| 2277 | for (cur_sdx = 0; cur_sdx < fh->csym;) |
| 2278 | { |
| 2279 | char *name; |
| 2280 | enum address_class class; |
| 2281 | |
| 2282 | (*swap_sym_in) (cur_bfd, |
| 2283 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2284 | + ((fh->isymBase + cur_sdx) |
| 2285 | * external_sym_size)), |
| 2286 | &sh); |
| 2287 | |
| 2288 | if (ECOFF_IS_STAB (&sh)) |
| 2289 | { |
| 2290 | cur_sdx++; |
| 2291 | continue; |
| 2292 | } |
| 2293 | |
| 2294 | /* Non absolute static symbols go into the minimal table. */ |
| 2295 | if (sh.sc == scUndefined || sh.sc == scNil |
| 2296 | || (sh.index == indexNil |
| 2297 | && (sh.st != stStatic || sh.sc == scAbs))) |
| 2298 | { |
| 2299 | /* FIXME, premature? */ |
| 2300 | cur_sdx++; |
| 2301 | continue; |
| 2302 | } |
| 2303 | |
| 2304 | name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; |
| 2305 | |
| 2306 | switch (sh.st) |
| 2307 | { |
| 2308 | long high; |
| 2309 | long procaddr; |
| 2310 | int new_sdx; |
| 2311 | |
| 2312 | case stStaticProc: /* Function */ |
| 2313 | /* I believe this is used only for file-local functions. |
| 2314 | The comment in symconst.h ("load time only static procs") |
| 2315 | isn't particularly clear on this point. */ |
| 2316 | prim_record_minimal_symbol (name, sh.value, mst_file_text); |
| 2317 | /* FALLTHROUGH */ |
| 2318 | |
| 2319 | case stProc: /* Asm labels apparently */ |
| 2320 | ADD_PSYMBOL_TO_LIST (name, strlen (name), |
| 2321 | VAR_NAMESPACE, LOC_BLOCK, |
| 2322 | objfile->static_psymbols, sh.value, |
| 2323 | psymtab_language, objfile); |
| 2324 | /* Skip over procedure to next one. */ |
| 2325 | if (sh.index >= hdr->iauxMax) |
| 2326 | { |
| 2327 | /* Should not happen, but does when cross-compiling |
| 2328 | with the MIPS compiler. FIXME -- pull later. */ |
| 2329 | complain (&index_complaint, name); |
| 2330 | new_sdx = cur_sdx + 1; /* Don't skip at all */ |
| 2331 | } |
| 2332 | else |
| 2333 | new_sdx = AUX_GET_ISYM (fh->fBigendian, |
| 2334 | (ecoff_data (cur_bfd)->external_aux |
| 2335 | + fh->iauxBase |
| 2336 | + sh.index)); |
| 2337 | procaddr = sh.value; |
| 2338 | |
| 2339 | if (new_sdx <= cur_sdx) |
| 2340 | { |
| 2341 | /* This should not happen either... FIXME. */ |
| 2342 | complain (&aux_index_complaint, name); |
| 2343 | new_sdx = cur_sdx + 1; /* Don't skip backward */ |
| 2344 | } |
| 2345 | |
| 2346 | cur_sdx = new_sdx; |
| 2347 | (*swap_sym_in) (cur_bfd, |
| 2348 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2349 | + ((fh->isymBase + cur_sdx - 1) |
| 2350 | * external_sym_size)), |
| 2351 | &sh); |
| 2352 | if (sh.st != stEnd) |
| 2353 | continue; |
| 2354 | high = procaddr + sh.value; |
| 2355 | if (high > pst->texthigh) |
| 2356 | pst->texthigh = high; |
| 2357 | continue; |
| 2358 | |
| 2359 | case stStatic: /* Variable */ |
| 2360 | if (sh.sc == scData || sh.sc == scSData || sh.sc == scRData) |
| 2361 | prim_record_minimal_symbol (name, sh.value, mst_file_data); |
| 2362 | else |
| 2363 | prim_record_minimal_symbol (name, sh.value, mst_file_bss); |
| 2364 | class = LOC_STATIC; |
| 2365 | break; |
| 2366 | |
| 2367 | case stTypedef:/* Typedef */ |
| 2368 | class = LOC_TYPEDEF; |
| 2369 | break; |
| 2370 | |
| 2371 | case stConstant: /* Constant decl */ |
| 2372 | class = LOC_CONST; |
| 2373 | break; |
| 2374 | |
| 2375 | case stUnion: |
| 2376 | case stStruct: |
| 2377 | case stEnum: |
| 2378 | case stBlock: /* { }, str, un, enum*/ |
| 2379 | if (sh.sc == scInfo || sh.sc == scCommon) |
| 2380 | { |
| 2381 | ADD_PSYMBOL_TO_LIST (name, strlen (name), |
| 2382 | STRUCT_NAMESPACE, LOC_TYPEDEF, |
| 2383 | objfile->static_psymbols, |
| 2384 | sh.value, |
| 2385 | psymtab_language, objfile); |
| 2386 | } |
| 2387 | /* Skip over the block */ |
| 2388 | new_sdx = sh.index; |
| 2389 | if (new_sdx <= cur_sdx) |
| 2390 | { |
| 2391 | /* This happens with the Ultrix kernel. */ |
| 2392 | complain (&block_index_complaint, name); |
| 2393 | new_sdx = cur_sdx + 1; /* Don't skip backward */ |
| 2394 | } |
| 2395 | cur_sdx = new_sdx; |
| 2396 | continue; |
| 2397 | |
| 2398 | case stFile: /* File headers */ |
| 2399 | case stLabel: /* Labels */ |
| 2400 | case stEnd: /* Ends of files */ |
| 2401 | goto skip; |
| 2402 | |
| 2403 | case stLocal: /* Local variables */ |
| 2404 | /* Normally these are skipped because we skip over |
| 2405 | all blocks we see. However, these can occur |
| 2406 | as visible symbols in a .h file that contains code. */ |
| 2407 | goto skip; |
| 2408 | |
| 2409 | default: |
| 2410 | /* Both complaints are valid: one gives symbol name, |
| 2411 | the other the offending symbol type. */ |
| 2412 | complain (&unknown_sym_complaint, name); |
| 2413 | complain (&unknown_st_complaint, sh.st); |
| 2414 | cur_sdx++; |
| 2415 | continue; |
| 2416 | } |
| 2417 | /* Use this gdb symbol */ |
| 2418 | ADD_PSYMBOL_TO_LIST (name, strlen (name), |
| 2419 | VAR_NAMESPACE, class, |
| 2420 | objfile->static_psymbols, sh.value, |
| 2421 | psymtab_language, objfile); |
| 2422 | skip: |
| 2423 | cur_sdx++; /* Go to next file symbol */ |
| 2424 | } |
| 2425 | |
| 2426 | /* Now do enter the external symbols. */ |
| 2427 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
| 2428 | cur_sdx = fdr_to_pst[f_idx].n_globals; |
| 2429 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; |
| 2430 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; |
| 2431 | for (; --cur_sdx >= 0; ext_ptr++) |
| 2432 | { |
| 2433 | enum address_class class; |
| 2434 | SYMR *psh; |
| 2435 | char *name; |
| 2436 | |
| 2437 | if (ext_ptr->ifd != f_idx) |
| 2438 | abort (); |
| 2439 | psh = &ext_ptr->asym; |
| 2440 | switch (psh->st) |
| 2441 | { |
| 2442 | case stProc: |
| 2443 | case stStaticProc: |
| 2444 | class = LOC_BLOCK; |
| 2445 | break; |
| 2446 | case stLabel: |
| 2447 | class = LOC_LABEL; |
| 2448 | break; |
| 2449 | default: |
| 2450 | complain (&unknown_ext_complaint, |
| 2451 | ecoff_data (cur_bfd)->ssext + psh->iss); |
| 2452 | /* Fall through, pretend it's global. */ |
| 2453 | case stGlobal: |
| 2454 | class = LOC_STATIC; |
| 2455 | break; |
| 2456 | } |
| 2457 | name = ecoff_data (cur_bfd)->ssext + psh->iss; |
| 2458 | ADD_PSYMBOL_ADDR_TO_LIST (name, strlen (name), |
| 2459 | VAR_NAMESPACE, class, |
| 2460 | objfile->global_psymbols, (CORE_ADDR) psh->value, |
| 2461 | psymtab_language, objfile); |
| 2462 | } |
| 2463 | } |
| 2464 | |
| 2465 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was |
| 2466 | empty and put on the free list. */ |
| 2467 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
| 2468 | psymtab_include_list, includes_used, |
| 2469 | -1, save_pst->texthigh, |
| 2470 | dependency_list, dependencies_used); |
| 2471 | if (objfile->ei.entry_point >= save_pst->textlow && |
| 2472 | objfile->ei.entry_point < save_pst->texthigh) |
| 2473 | { |
| 2474 | objfile->ei.entry_file_lowpc = save_pst->textlow; |
| 2475 | objfile->ei.entry_file_highpc = save_pst->texthigh; |
| 2476 | } |
| 2477 | } |
| 2478 | |
| 2479 | /* Now scan the FDRs for dependencies */ |
| 2480 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
| 2481 | { |
| 2482 | fh = f_idx + ecoff_data (cur_bfd)->fdr; |
| 2483 | pst = fdr_to_pst[f_idx].pst; |
| 2484 | |
| 2485 | if (pst == (struct partial_symtab *)NULL) |
| 2486 | continue; |
| 2487 | |
| 2488 | /* This should catch stabs-in-ecoff. */ |
| 2489 | if (fh->crfd <= 1) |
| 2490 | continue; |
| 2491 | |
| 2492 | /* Skip the first file indirect entry as it is a self dependency |
| 2493 | for source files or a reverse .h -> .c dependency for header files. */ |
| 2494 | pst->number_of_dependencies = 0; |
| 2495 | pst->dependencies = |
| 2496 | ((struct partial_symtab **) |
| 2497 | obstack_alloc (&objfile->psymbol_obstack, |
| 2498 | ((fh->crfd - 1) |
| 2499 | * sizeof (struct partial_symtab *)))); |
| 2500 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) |
| 2501 | { |
| 2502 | RFDT rh; |
| 2503 | |
| 2504 | (*swap_rfd_in) (cur_bfd, |
| 2505 | ((char *) ecoff_data (cur_bfd)->external_rfd |
| 2506 | + (fh->rfdBase + s_idx) * external_rfd_size), |
| 2507 | &rh); |
| 2508 | if (rh < 0 || rh >= hdr->ifdMax) |
| 2509 | { |
| 2510 | complain (&bad_file_number_complaint, rh); |
| 2511 | continue; |
| 2512 | } |
| 2513 | |
| 2514 | /* Skip self dependencies of header files. */ |
| 2515 | if (rh == f_idx) |
| 2516 | continue; |
| 2517 | |
| 2518 | /* Do not add to dependeny list if psymtab was empty. */ |
| 2519 | if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL) |
| 2520 | continue; |
| 2521 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; |
| 2522 | } |
| 2523 | } |
| 2524 | do_cleanups (old_chain); |
| 2525 | } |
| 2526 | |
| 2527 | |
| 2528 | static char * |
| 2529 | mips_next_symbol_text () |
| 2530 | { |
| 2531 | SYMR sh; |
| 2532 | |
| 2533 | cur_sdx++; |
| 2534 | (*ecoff_backend (cur_bfd)->swap_sym_in) |
| 2535 | (cur_bfd, |
| 2536 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2537 | + ((cur_fdr->isymBase + cur_sdx) |
| 2538 | * ecoff_backend (cur_bfd)->external_sym_size)), |
| 2539 | &sh); |
| 2540 | return ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.iss; |
| 2541 | } |
| 2542 | |
| 2543 | /* Ancillary function to psymtab_to_symtab(). Does all the work |
| 2544 | for turning the partial symtab PST into a symtab, recurring |
| 2545 | first on all dependent psymtabs. The argument FILENAME is |
| 2546 | only passed so we can see in debug stack traces what file |
| 2547 | is being read. |
| 2548 | |
| 2549 | This function has a split personality, based on whether the |
| 2550 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. |
| 2551 | The flow of control and even the memory allocation differs. FIXME. */ |
| 2552 | |
| 2553 | static void |
| 2554 | psymtab_to_symtab_1 (pst, filename) |
| 2555 | struct partial_symtab *pst; |
| 2556 | char *filename; |
| 2557 | { |
| 2558 | const bfd_size_type external_sym_size |
| 2559 | = ecoff_backend (cur_bfd)->external_sym_size; |
| 2560 | const bfd_size_type external_pdr_size |
| 2561 | = ecoff_backend (cur_bfd)->external_pdr_size; |
| 2562 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) |
| 2563 | = ecoff_backend (cur_bfd)->swap_sym_in; |
| 2564 | void (* const swap_pdr_in) PARAMS ((bfd *, PTR, PDR *)) |
| 2565 | = ecoff_backend (cur_bfd)->swap_pdr_in; |
| 2566 | int i; |
| 2567 | struct symtab *st; |
| 2568 | FDR *fh; |
| 2569 | struct linetable *lines; |
| 2570 | |
| 2571 | if (pst->readin) |
| 2572 | return; |
| 2573 | pst->readin = 1; |
| 2574 | |
| 2575 | /* Read in all partial symbtabs on which this one is dependent. |
| 2576 | NOTE that we do have circular dependencies, sigh. We solved |
| 2577 | that by setting pst->readin before this point. */ |
| 2578 | |
| 2579 | for (i = 0; i < pst->number_of_dependencies; i++) |
| 2580 | if (!pst->dependencies[i]->readin) |
| 2581 | { |
| 2582 | /* Inform about additional files to be read in. */ |
| 2583 | if (info_verbose) |
| 2584 | { |
| 2585 | fputs_filtered (" ", stdout); |
| 2586 | wrap_here (""); |
| 2587 | fputs_filtered ("and ", stdout); |
| 2588 | wrap_here (""); |
| 2589 | printf_filtered ("%s...", |
| 2590 | pst->dependencies[i]->filename); |
| 2591 | wrap_here (""); /* Flush output */ |
| 2592 | fflush (stdout); |
| 2593 | } |
| 2594 | /* We only pass the filename for debug purposes */ |
| 2595 | psymtab_to_symtab_1 (pst->dependencies[i], |
| 2596 | pst->dependencies[i]->filename); |
| 2597 | } |
| 2598 | |
| 2599 | /* Do nothing if this is a dummy psymtab. */ |
| 2600 | |
| 2601 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 |
| 2602 | && pst->textlow == 0 && pst->texthigh == 0) |
| 2603 | return; |
| 2604 | |
| 2605 | /* Now read the symbols for this symtab */ |
| 2606 | |
| 2607 | cur_bfd = CUR_BFD (pst); |
| 2608 | current_objfile = pst->objfile; |
| 2609 | cur_fd = FDR_IDX (pst); |
| 2610 | fh = (cur_fd == -1) ? (FDR *) NULL : ecoff_data (cur_bfd)->fdr + cur_fd; |
| 2611 | cur_fdr = fh; |
| 2612 | |
| 2613 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
| 2614 | processing_gcc_compilation = 0; |
| 2615 | if (fh != (FDR *) NULL && fh->csym >= 2) |
| 2616 | { |
| 2617 | SYMR sh; |
| 2618 | |
| 2619 | (*swap_sym_in) (cur_bfd, |
| 2620 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2621 | + (fh->isymBase + 1) * external_sym_size), |
| 2622 | &sh); |
| 2623 | if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss, |
| 2624 | stabs_symbol)) |
| 2625 | { |
| 2626 | /* We indicate that this is a GCC compilation so that certain |
| 2627 | features will be enabled in stabsread/dbxread. */ |
| 2628 | processing_gcc_compilation = 2; |
| 2629 | } |
| 2630 | } |
| 2631 | |
| 2632 | if (processing_gcc_compilation != 0) |
| 2633 | { |
| 2634 | char *pdr_ptr; |
| 2635 | char *pdr_end; |
| 2636 | int first_pdr; |
| 2637 | unsigned long first_off = 0; |
| 2638 | |
| 2639 | /* This symbol table contains stabs-in-ecoff entries. */ |
| 2640 | |
| 2641 | /* Parse local symbols first */ |
| 2642 | |
| 2643 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ |
| 2644 | { |
| 2645 | current_objfile = NULL; |
| 2646 | return; |
| 2647 | } |
| 2648 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) |
| 2649 | { |
| 2650 | SYMR sh; |
| 2651 | char *name; |
| 2652 | CORE_ADDR valu; |
| 2653 | |
| 2654 | (*swap_sym_in) (cur_bfd, |
| 2655 | ((char *) ecoff_data (cur_bfd)->external_sym |
| 2656 | + (fh->isymBase + cur_sdx) * external_sym_size), |
| 2657 | &sh); |
| 2658 | name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; |
| 2659 | valu = sh.value; |
| 2660 | if (ECOFF_IS_STAB (&sh)) |
| 2661 | { |
| 2662 | int type_code = ECOFF_UNMARK_STAB (sh.index); |
| 2663 | process_one_symbol (type_code, 0, valu, name, |
| 2664 | pst->section_offsets, pst->objfile); |
| 2665 | if (type_code == N_FUN) |
| 2666 | { |
| 2667 | /* Make up special symbol to contain |
| 2668 | procedure specific info */ |
| 2669 | struct mips_extra_func_info *e = |
| 2670 | ((struct mips_extra_func_info *) |
| 2671 | obstack_alloc (¤t_objfile->symbol_obstack, |
| 2672 | sizeof (struct mips_extra_func_info))); |
| 2673 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
| 2674 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
| 2675 | SYMBOL_CLASS (s) = LOC_CONST; |
| 2676 | SYMBOL_TYPE (s) = builtin_type_void; |
| 2677 | SYMBOL_VALUE (s) = (long) e; |
| 2678 | add_symbol_to_list (s, &local_symbols); |
| 2679 | } |
| 2680 | } |
| 2681 | else if (sh.st == stLabel && sh.index != indexNil) |
| 2682 | { |
| 2683 | /* Handle encoded stab line number. */ |
| 2684 | record_line (current_subfile, sh.index, valu); |
| 2685 | } |
| 2686 | else if (sh.st == stProc || sh.st == stStaticProc || sh.st == stEnd) |
| 2687 | /* These are generated by gcc-2.x, do not complain */ |
| 2688 | ; |
| 2689 | else |
| 2690 | complain (&stab_unknown_complaint, name); |
| 2691 | } |
| 2692 | st = end_symtab (pst->texthigh, 0, 0, pst->objfile, SECT_OFF_TEXT); |
| 2693 | end_stabs (); |
| 2694 | |
| 2695 | /* Sort the symbol table now, we are done adding symbols to it. |
| 2696 | We must do this before parse_procedure calls lookup_symbol. */ |
| 2697 | sort_symtab_syms (st); |
| 2698 | |
| 2699 | /* This may not be necessary for stabs symtabs. FIXME. */ |
| 2700 | sort_blocks (st); |
| 2701 | |
| 2702 | /* Fill in procedure info next. */ |
| 2703 | first_pdr = 1; |
| 2704 | pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr |
| 2705 | + fh->ipdFirst * external_pdr_size); |
| 2706 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; |
| 2707 | for (; pdr_ptr < pdr_end; pdr_ptr += external_pdr_size) |
| 2708 | { |
| 2709 | PDR pr; |
| 2710 | |
| 2711 | (*swap_pdr_in) (cur_bfd, pdr_ptr, &pr); |
| 2712 | if (first_pdr) |
| 2713 | { |
| 2714 | first_off = pr.adr; |
| 2715 | first_pdr = 0; |
| 2716 | } |
| 2717 | parse_procedure (&pr, st, first_off); |
| 2718 | } |
| 2719 | } |
| 2720 | else |
| 2721 | { |
| 2722 | /* This symbol table contains ordinary ecoff entries. */ |
| 2723 | |
| 2724 | /* FIXME: doesn't use pst->section_offsets. */ |
| 2725 | |
| 2726 | int f_max; |
| 2727 | int maxlines; |
| 2728 | EXTR *ext_ptr; |
| 2729 | |
| 2730 | /* How many symbols will we need */ |
| 2731 | /* FIXME, this does not count enum values. */ |
| 2732 | f_max = pst->n_global_syms + pst->n_static_syms; |
| 2733 | if (fh == 0) |
| 2734 | { |
| 2735 | maxlines = 0; |
| 2736 | st = new_symtab ("unknown", f_max, 0, pst->objfile); |
| 2737 | } |
| 2738 | else |
| 2739 | { |
| 2740 | f_max += fh->csym + fh->cpd; |
| 2741 | maxlines = 2 * fh->cline; |
| 2742 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); |
| 2743 | |
| 2744 | /* The proper language was already determined when building |
| 2745 | the psymtab, use it. */ |
| 2746 | st->language = PST_PRIVATE (pst)->pst_language; |
| 2747 | } |
| 2748 | |
| 2749 | psymtab_language = st->language; |
| 2750 | |
| 2751 | lines = LINETABLE (st); |
| 2752 | |
| 2753 | /* Get a new lexical context */ |
| 2754 | |
| 2755 | push_parse_stack (); |
| 2756 | top_stack->cur_st = st; |
| 2757 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), |
| 2758 | STATIC_BLOCK); |
| 2759 | BLOCK_START (top_stack->cur_block) = fh ? fh->adr : 0; |
| 2760 | BLOCK_END (top_stack->cur_block) = 0; |
| 2761 | top_stack->blocktype = stFile; |
| 2762 | top_stack->maxsyms = 2 * f_max; |
| 2763 | top_stack->cur_type = 0; |
| 2764 | top_stack->procadr = 0; |
| 2765 | top_stack->numargs = 0; |
| 2766 | |
| 2767 | if (fh) |
| 2768 | { |
| 2769 | char *sym_ptr; |
| 2770 | char *sym_end; |
| 2771 | |
| 2772 | /* Parse local symbols first */ |
| 2773 | sym_ptr = ((char *) ecoff_data (cur_bfd)->external_sym |
| 2774 | + fh->isymBase * external_sym_size); |
| 2775 | sym_end = sym_ptr + fh->csym * external_sym_size; |
| 2776 | while (sym_ptr < sym_end) |
| 2777 | { |
| 2778 | SYMR sh; |
| 2779 | int c; |
| 2780 | |
| 2781 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); |
| 2782 | c = parse_symbol (&sh, |
| 2783 | (ecoff_data (cur_bfd)->external_aux |
| 2784 | + fh->iauxBase), |
| 2785 | sym_ptr, fh->fBigendian); |
| 2786 | sym_ptr += c * external_sym_size; |
| 2787 | } |
| 2788 | |
| 2789 | /* Linenumbers. At the end, check if we can save memory. |
| 2790 | parse_lines has to look ahead an arbitrary number of PDR |
| 2791 | structures, so we swap them all first. */ |
| 2792 | if (fh->cpd > 0) |
| 2793 | { |
| 2794 | PDR *pr_block; |
| 2795 | struct cleanup *old_chain; |
| 2796 | char *pdr_ptr; |
| 2797 | char *pdr_end; |
| 2798 | PDR *pdr_in; |
| 2799 | PDR *pdr_in_end; |
| 2800 | |
| 2801 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); |
| 2802 | |
| 2803 | old_chain = make_cleanup (free, pr_block); |
| 2804 | |
| 2805 | pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr |
| 2806 | + fh->ipdFirst * external_pdr_size); |
| 2807 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; |
| 2808 | pdr_in = pr_block; |
| 2809 | for (; |
| 2810 | pdr_ptr < pdr_end; |
| 2811 | pdr_ptr += external_pdr_size, pdr_in++) |
| 2812 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); |
| 2813 | |
| 2814 | parse_lines (fh, pr_block, lines); |
| 2815 | if (lines->nitems < fh->cline) |
| 2816 | lines = shrink_linetable (lines); |
| 2817 | |
| 2818 | /* Fill in procedure info next. */ |
| 2819 | pdr_in = pr_block; |
| 2820 | pdr_in_end = pdr_in + fh->cpd; |
| 2821 | for (; pdr_in < pdr_in_end; pdr_in++) |
| 2822 | parse_procedure (pdr_in, 0, pr_block->adr); |
| 2823 | |
| 2824 | do_cleanups (old_chain); |
| 2825 | } |
| 2826 | } |
| 2827 | |
| 2828 | LINETABLE (st) = lines; |
| 2829 | |
| 2830 | /* .. and our share of externals. |
| 2831 | XXX use the global list to speed up things here. how? |
| 2832 | FIXME, Maybe quit once we have found the right number of ext's? */ |
| 2833 | top_stack->cur_st = st; |
| 2834 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), |
| 2835 | GLOBAL_BLOCK); |
| 2836 | top_stack->blocktype = stFile; |
| 2837 | top_stack->maxsyms = (ecoff_data (cur_bfd)->symbolic_header.isymMax |
| 2838 | + ecoff_data (cur_bfd)->symbolic_header.ipdMax |
| 2839 | + ecoff_data (cur_bfd)->symbolic_header.iextMax); |
| 2840 | |
| 2841 | ext_ptr = PST_PRIVATE (pst)->extern_tab; |
| 2842 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) |
| 2843 | parse_external (ext_ptr, 1, fh->fBigendian); |
| 2844 | |
| 2845 | /* If there are undefined, tell the user */ |
| 2846 | if (n_undef_symbols) |
| 2847 | { |
| 2848 | printf_filtered ("File %s contains %d unresolved references:", |
| 2849 | st->filename, n_undef_symbols); |
| 2850 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", |
| 2851 | n_undef_vars, n_undef_procs, n_undef_labels); |
| 2852 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; |
| 2853 | |
| 2854 | } |
| 2855 | pop_parse_stack (); |
| 2856 | |
| 2857 | /* Sort the symbol table now, we are done adding symbols to it.*/ |
| 2858 | sort_symtab_syms (st); |
| 2859 | |
| 2860 | sort_blocks (st); |
| 2861 | } |
| 2862 | |
| 2863 | /* Now link the psymtab and the symtab. */ |
| 2864 | pst->symtab = st; |
| 2865 | |
| 2866 | current_objfile = NULL; |
| 2867 | } |
| 2868 | \f |
| 2869 | /* Ancillary parsing procedures. */ |
| 2870 | |
| 2871 | /* Lookup the type at relative index RN. Return it in TPP |
| 2872 | if found and in any event come up with its name PNAME. |
| 2873 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). |
| 2874 | Return value says how many aux symbols we ate. */ |
| 2875 | |
| 2876 | static int |
| 2877 | cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name) |
| 2878 | int fd; |
| 2879 | union aux_ext *ax; |
| 2880 | struct type **tpp; |
| 2881 | enum type_code type_code; /* Use to alloc new type if none is found. */ |
| 2882 | char **pname; |
| 2883 | int bigend; |
| 2884 | char *sym_name; |
| 2885 | { |
| 2886 | RNDXR rn[1]; |
| 2887 | unsigned int rf; |
| 2888 | int result = 1; |
| 2889 | FDR *fh; |
| 2890 | char *esh; |
| 2891 | SYMR sh; |
| 2892 | int xref_fd; |
| 2893 | struct mips_pending *pend; |
| 2894 | |
| 2895 | *tpp = (struct type *)NULL; |
| 2896 | |
| 2897 | ecoff_swap_rndx_in (bigend, &ax->a_rndx, rn); |
| 2898 | |
| 2899 | /* Escape index means 'the next one' */ |
| 2900 | if (rn->rfd == 0xfff) |
| 2901 | { |
| 2902 | result++; |
| 2903 | rf = AUX_GET_ISYM (bigend, ax + 1); |
| 2904 | } |
| 2905 | else |
| 2906 | { |
| 2907 | rf = rn->rfd; |
| 2908 | } |
| 2909 | |
| 2910 | /* mips cc uses a rf of -1 for opaque struct definitions. |
| 2911 | Set TYPE_FLAG_STUB for these types so that check_stub_type will |
| 2912 | resolve them if the struct gets defined in another compilation unit. */ |
| 2913 | if (rf == -1) |
| 2914 | { |
| 2915 | *pname = "<undefined>"; |
| 2916 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); |
| 2917 | TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB; |
| 2918 | return result; |
| 2919 | } |
| 2920 | |
| 2921 | /* mips cc uses an escaped rn->index of 0 for struct return types |
| 2922 | of procedures that were compiled without -g. These will always remain |
| 2923 | undefined. */ |
| 2924 | if (rn->rfd == 0xfff && rn->index == 0) |
| 2925 | { |
| 2926 | *pname = "<undefined>"; |
| 2927 | return result; |
| 2928 | } |
| 2929 | |
| 2930 | /* Find the relative file descriptor and the symbol in it. */ |
| 2931 | fh = get_rfd (fd, rf); |
| 2932 | xref_fd = fh - ecoff_data (cur_bfd)->fdr; |
| 2933 | |
| 2934 | if (rn->index >= fh->csym) |
| 2935 | { |
| 2936 | /* File indirect entry is corrupt. */ |
| 2937 | *pname = "<illegal>"; |
| 2938 | complain (&bad_rfd_entry_complaint, |
| 2939 | sym_name, xref_fd, rn->index); |
| 2940 | return result; |
| 2941 | } |
| 2942 | |
| 2943 | /* If we have processed this symbol then we left a forwarding |
| 2944 | pointer to the type in the pending list. If not, we`ll put |
| 2945 | it in a list of pending types, to be processed later when |
| 2946 | the file will be. In any event, we collect the name for the |
| 2947 | type here. */ |
| 2948 | |
| 2949 | esh = ((char *) ecoff_data (cur_bfd)->external_sym |
| 2950 | + ((fh->isymBase + rn->index) |
| 2951 | * ecoff_backend (cur_bfd)->external_sym_size)); |
| 2952 | (*ecoff_backend (cur_bfd)->swap_sym_in) (cur_bfd, esh, &sh); |
| 2953 | |
| 2954 | /* Make sure that this type of cross reference can be handled. */ |
| 2955 | if (sh.sc != scInfo |
| 2956 | || (sh.st != stBlock && sh.st != stTypedef |
| 2957 | && sh.st != stStruct && sh.st != stUnion |
| 2958 | && sh.st != stEnum)) |
| 2959 | { |
| 2960 | /* File indirect entry is corrupt. */ |
| 2961 | *pname = "<illegal>"; |
| 2962 | complain (&bad_rfd_entry_complaint, |
| 2963 | sym_name, xref_fd, rn->index); |
| 2964 | return result; |
| 2965 | } |
| 2966 | |
| 2967 | *pname = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; |
| 2968 | |
| 2969 | pend = is_pending_symbol (fh, esh); |
| 2970 | if (pend) |
| 2971 | *tpp = pend->t; |
| 2972 | else |
| 2973 | { |
| 2974 | /* We have not yet seen this type. */ |
| 2975 | |
| 2976 | if (sh.iss == 0 && sh.st == stTypedef) |
| 2977 | { |
| 2978 | TIR tir; |
| 2979 | |
| 2980 | /* alpha cc puts out a stTypedef with a sh.iss of zero for |
| 2981 | two cases: |
| 2982 | a) forward declarations of structs/unions/enums which are not |
| 2983 | defined in this compilation unit. |
| 2984 | For these the type will be void. This is a bad design decision |
| 2985 | as cross referencing across compilation units is impossible |
| 2986 | due to the missing name. |
| 2987 | b) forward declarations of structs/unions/enums which are defined |
| 2988 | later in this file or in another file in the same compilation |
| 2989 | unit. Simply cross reference those again to get the |
| 2990 | true type. |
| 2991 | The forward references are not entered in the pending list and |
| 2992 | in the symbol table. */ |
| 2993 | |
| 2994 | ecoff_swap_tir_in (bigend, |
| 2995 | &(ecoff_data (cur_bfd)->external_aux |
| 2996 | + fh->iauxBase + sh.index)->a_ti, |
| 2997 | &tir); |
| 2998 | if (tir.tq0 != tqNil) |
| 2999 | complain (&illegal_forward_tq0_complaint, sym_name); |
| 3000 | switch (tir.bt) |
| 3001 | { |
| 3002 | case btVoid: |
| 3003 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
| 3004 | current_objfile); |
| 3005 | *pname = "<undefined>"; |
| 3006 | break; |
| 3007 | |
| 3008 | case btStruct: |
| 3009 | case btUnion: |
| 3010 | case btEnum: |
| 3011 | cross_ref (xref_fd, |
| 3012 | (ecoff_data (cur_bfd)->external_aux |
| 3013 | + fh->iauxBase + sh.index + 1), |
| 3014 | tpp, type_code, pname, |
| 3015 | fh->fBigendian, sym_name); |
| 3016 | break; |
| 3017 | |
| 3018 | default: |
| 3019 | complain (&illegal_forward_bt_complaint, tir.bt, sym_name); |
| 3020 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
| 3021 | current_objfile); |
| 3022 | break; |
| 3023 | } |
| 3024 | return result; |
| 3025 | } |
| 3026 | else if (sh.st == stTypedef) |
| 3027 | { |
| 3028 | /* Parse the type for a normal typedef. This might recursively call |
| 3029 | cross_ref till we get a non typedef'ed type. |
| 3030 | FIXME: This is not correct behaviour, but gdb currently |
| 3031 | cannot handle typedefs without type copying. But type copying is |
| 3032 | impossible as we might have mutual forward references between |
| 3033 | two files and the copied type would not get filled in when |
| 3034 | we later parse its definition. */ |
| 3035 | *tpp = parse_type (xref_fd, |
| 3036 | (ecoff_data (cur_bfd)->external_aux |
| 3037 | + fh->iauxBase + sh.index), |
| 3038 | (int *)NULL, |
| 3039 | fh->fBigendian, |
| 3040 | (ecoff_data (cur_bfd)->ss |
| 3041 | + fh->issBase + sh.iss)); |
| 3042 | } |
| 3043 | else |
| 3044 | { |
| 3045 | /* Cross reference to a struct/union/enum which is defined |
| 3046 | in another file in the same compilation unit but that file |
| 3047 | has not been parsed yet. |
| 3048 | Initialize the type only, it will be filled in when |
| 3049 | it's definition is parsed. */ |
| 3050 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); |
| 3051 | } |
| 3052 | add_pending (fh, esh, *tpp); |
| 3053 | } |
| 3054 | |
| 3055 | /* We used one auxent normally, two if we got a "next one" rf. */ |
| 3056 | return result; |
| 3057 | } |
| 3058 | |
| 3059 | |
| 3060 | /* Quick&dirty lookup procedure, to avoid the MI ones that require |
| 3061 | keeping the symtab sorted */ |
| 3062 | |
| 3063 | static struct symbol * |
| 3064 | mylookup_symbol (name, block, namespace, class) |
| 3065 | char *name; |
| 3066 | register struct block *block; |
| 3067 | enum namespace namespace; |
| 3068 | enum address_class class; |
| 3069 | { |
| 3070 | register int bot, top, inc; |
| 3071 | register struct symbol *sym; |
| 3072 | |
| 3073 | bot = 0; |
| 3074 | top = BLOCK_NSYMS (block); |
| 3075 | inc = name[0]; |
| 3076 | while (bot < top) |
| 3077 | { |
| 3078 | sym = BLOCK_SYM (block, bot); |
| 3079 | if (SYMBOL_NAME (sym)[0] == inc |
| 3080 | && SYMBOL_NAMESPACE (sym) == namespace |
| 3081 | && SYMBOL_CLASS (sym) == class |
| 3082 | && strcmp (SYMBOL_NAME (sym), name) == 0) |
| 3083 | return sym; |
| 3084 | bot++; |
| 3085 | } |
| 3086 | block = BLOCK_SUPERBLOCK (block); |
| 3087 | if (block) |
| 3088 | return mylookup_symbol (name, block, namespace, class); |
| 3089 | return 0; |
| 3090 | } |
| 3091 | |
| 3092 | |
| 3093 | /* Add a new symbol S to a block B. |
| 3094 | Infrequently, we will need to reallocate the block to make it bigger. |
| 3095 | We only detect this case when adding to top_stack->cur_block, since |
| 3096 | that's the only time we know how big the block is. FIXME. */ |
| 3097 | |
| 3098 | static void |
| 3099 | add_symbol (s, b) |
| 3100 | struct symbol *s; |
| 3101 | struct block *b; |
| 3102 | { |
| 3103 | int nsyms = BLOCK_NSYMS (b)++; |
| 3104 | struct block *origb; |
| 3105 | struct parse_stack *stackp; |
| 3106 | |
| 3107 | if (b == top_stack->cur_block && |
| 3108 | nsyms >= top_stack->maxsyms) |
| 3109 | { |
| 3110 | complain (&block_overflow_complaint, SYMBOL_NAME (s)); |
| 3111 | /* In this case shrink_block is actually grow_block, since |
| 3112 | BLOCK_NSYMS(b) is larger than its current size. */ |
| 3113 | origb = b; |
| 3114 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); |
| 3115 | |
| 3116 | /* Now run through the stack replacing pointers to the |
| 3117 | original block. shrink_block has already done this |
| 3118 | for the blockvector and BLOCK_FUNCTION. */ |
| 3119 | for (stackp = top_stack; stackp; stackp = stackp->next) |
| 3120 | { |
| 3121 | if (stackp->cur_block == origb) |
| 3122 | { |
| 3123 | stackp->cur_block = b; |
| 3124 | stackp->maxsyms = BLOCK_NSYMS (b); |
| 3125 | } |
| 3126 | } |
| 3127 | } |
| 3128 | BLOCK_SYM (b, nsyms) = s; |
| 3129 | } |
| 3130 | |
| 3131 | /* Add a new block B to a symtab S */ |
| 3132 | |
| 3133 | static void |
| 3134 | add_block (b, s) |
| 3135 | struct block *b; |
| 3136 | struct symtab *s; |
| 3137 | { |
| 3138 | struct blockvector *bv = BLOCKVECTOR (s); |
| 3139 | |
| 3140 | bv = (struct blockvector *) xrealloc ((PTR) bv, |
| 3141 | (sizeof (struct blockvector) |
| 3142 | + BLOCKVECTOR_NBLOCKS (bv) |
| 3143 | * sizeof (bv->block))); |
| 3144 | if (bv != BLOCKVECTOR (s)) |
| 3145 | BLOCKVECTOR (s) = bv; |
| 3146 | |
| 3147 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; |
| 3148 | } |
| 3149 | |
| 3150 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. |
| 3151 | MIPS' linenumber encoding might need more than one byte |
| 3152 | to describe it, LAST is used to detect these continuation lines. |
| 3153 | |
| 3154 | Combining lines with the same line number seems like a bad idea. |
| 3155 | E.g: There could be a line number entry with the same line number after the |
| 3156 | prologue and GDB should not ignore it (this is a better way to find |
| 3157 | a prologue than mips_skip_prologue). |
| 3158 | But due to the compressed line table format there are line number entries |
| 3159 | for the same line which are needed to bridge the gap to the next |
| 3160 | line number entry. These entries have a bogus address info with them |
| 3161 | and we are unable to tell them from intended duplicate line number |
| 3162 | entries. |
| 3163 | This is another reason why -ggdb debugging format is preferable. */ |
| 3164 | |
| 3165 | static int |
| 3166 | add_line (lt, lineno, adr, last) |
| 3167 | struct linetable *lt; |
| 3168 | int lineno; |
| 3169 | CORE_ADDR adr; |
| 3170 | int last; |
| 3171 | { |
| 3172 | if (last == 0) |
| 3173 | last = -2; /* make sure we record first line */ |
| 3174 | |
| 3175 | if (last == lineno) /* skip continuation lines */ |
| 3176 | return lineno; |
| 3177 | |
| 3178 | lt->item[lt->nitems].line = lineno; |
| 3179 | lt->item[lt->nitems++].pc = adr << 2; |
| 3180 | return lineno; |
| 3181 | } |
| 3182 | \f |
| 3183 | /* Sorting and reordering procedures */ |
| 3184 | |
| 3185 | /* Blocks with a smaller low bound should come first */ |
| 3186 | |
| 3187 | static int |
| 3188 | compare_blocks (arg1, arg2) |
| 3189 | const void *arg1, *arg2; |
| 3190 | { |
| 3191 | register int addr_diff; |
| 3192 | struct block **b1 = (struct block **) arg1; |
| 3193 | struct block **b2 = (struct block **) arg2; |
| 3194 | |
| 3195 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); |
| 3196 | if (addr_diff == 0) |
| 3197 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); |
| 3198 | return addr_diff; |
| 3199 | } |
| 3200 | |
| 3201 | /* Sort the blocks of a symtab S. |
| 3202 | Reorder the blocks in the blockvector by code-address, |
| 3203 | as required by some MI search routines */ |
| 3204 | |
| 3205 | static void |
| 3206 | sort_blocks (s) |
| 3207 | struct symtab *s; |
| 3208 | { |
| 3209 | struct blockvector *bv = BLOCKVECTOR (s); |
| 3210 | |
| 3211 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) |
| 3212 | { |
| 3213 | /* Cosmetic */ |
| 3214 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) |
| 3215 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; |
| 3216 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) |
| 3217 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; |
| 3218 | return; |
| 3219 | } |
| 3220 | /* |
| 3221 | * This is very unfortunate: normally all functions are compiled in |
| 3222 | * the order they are found, but if the file is compiled -O3 things |
| 3223 | * are very different. It would be nice to find a reliable test |
| 3224 | * to detect -O3 images in advance. |
| 3225 | */ |
| 3226 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) |
| 3227 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), |
| 3228 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, |
| 3229 | sizeof (struct block *), |
| 3230 | compare_blocks); |
| 3231 | |
| 3232 | { |
| 3233 | register CORE_ADDR high = 0; |
| 3234 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); |
| 3235 | |
| 3236 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) |
| 3237 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) |
| 3238 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); |
| 3239 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; |
| 3240 | } |
| 3241 | |
| 3242 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = |
| 3243 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); |
| 3244 | |
| 3245 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = |
| 3246 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); |
| 3247 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = |
| 3248 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); |
| 3249 | } |
| 3250 | \f |
| 3251 | |
| 3252 | /* Constructor/restructor/destructor procedures */ |
| 3253 | |
| 3254 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols |
| 3255 | MAXSYMS and linenumbers MAXLINES we'll put in it */ |
| 3256 | |
| 3257 | static struct symtab * |
| 3258 | new_symtab (name, maxsyms, maxlines, objfile) |
| 3259 | char *name; |
| 3260 | int maxsyms; |
| 3261 | int maxlines; |
| 3262 | struct objfile *objfile; |
| 3263 | { |
| 3264 | struct symtab *s = allocate_symtab (name, objfile); |
| 3265 | |
| 3266 | LINETABLE (s) = new_linetable (maxlines); |
| 3267 | |
| 3268 | /* All symtabs must have at least two blocks */ |
| 3269 | BLOCKVECTOR (s) = new_bvect (2); |
| 3270 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); |
| 3271 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); |
| 3272 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = |
| 3273 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
| 3274 | |
| 3275 | s->free_code = free_linetable; |
| 3276 | |
| 3277 | return (s); |
| 3278 | } |
| 3279 | |
| 3280 | /* Allocate a new partial_symtab NAME */ |
| 3281 | |
| 3282 | static struct partial_symtab * |
| 3283 | new_psymtab (name, objfile) |
| 3284 | char *name; |
| 3285 | struct objfile *objfile; |
| 3286 | { |
| 3287 | struct partial_symtab *psymtab; |
| 3288 | |
| 3289 | psymtab = allocate_psymtab (name, objfile); |
| 3290 | |
| 3291 | /* Keep a backpointer to the file's symbols */ |
| 3292 | |
| 3293 | psymtab->read_symtab_private = ((char *) |
| 3294 | obstack_alloc (&objfile->psymbol_obstack, |
| 3295 | sizeof (struct symloc))); |
| 3296 | memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
| 3297 | CUR_BFD (psymtab) = cur_bfd; |
| 3298 | |
| 3299 | /* The way to turn this into a symtab is to call... */ |
| 3300 | psymtab->read_symtab = mipscoff_psymtab_to_symtab; |
| 3301 | return (psymtab); |
| 3302 | } |
| 3303 | |
| 3304 | |
| 3305 | /* Allocate a linetable array of the given SIZE. Since the struct |
| 3306 | already includes one item, we subtract one when calculating the |
| 3307 | proper size to allocate. */ |
| 3308 | |
| 3309 | static struct linetable * |
| 3310 | new_linetable (size) |
| 3311 | int size; |
| 3312 | { |
| 3313 | struct linetable *l; |
| 3314 | |
| 3315 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); |
| 3316 | l = (struct linetable *) xmalloc (size); |
| 3317 | l->nitems = 0; |
| 3318 | return l; |
| 3319 | } |
| 3320 | |
| 3321 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
| 3322 | I am not so sure about the 3.4 ones. |
| 3323 | |
| 3324 | Since the struct linetable already includes one item, we subtract one when |
| 3325 | calculating the proper size to allocate. */ |
| 3326 | |
| 3327 | static struct linetable * |
| 3328 | shrink_linetable (lt) |
| 3329 | struct linetable *lt; |
| 3330 | { |
| 3331 | |
| 3332 | return (struct linetable *) xrealloc ((PTR) lt, |
| 3333 | (sizeof (struct linetable) |
| 3334 | + ((lt->nitems - 1) |
| 3335 | * sizeof (lt->item)))); |
| 3336 | } |
| 3337 | |
| 3338 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
| 3339 | |
| 3340 | static struct blockvector * |
| 3341 | new_bvect (nblocks) |
| 3342 | int nblocks; |
| 3343 | { |
| 3344 | struct blockvector *bv; |
| 3345 | int size; |
| 3346 | |
| 3347 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); |
| 3348 | bv = (struct blockvector *) xzalloc (size); |
| 3349 | |
| 3350 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; |
| 3351 | |
| 3352 | return bv; |
| 3353 | } |
| 3354 | |
| 3355 | /* Allocate and zero a new block of MAXSYMS symbols */ |
| 3356 | |
| 3357 | static struct block * |
| 3358 | new_block (maxsyms) |
| 3359 | int maxsyms; |
| 3360 | { |
| 3361 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); |
| 3362 | |
| 3363 | return (struct block *) xzalloc (size); |
| 3364 | } |
| 3365 | |
| 3366 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. |
| 3367 | Shrink_block can also be used by add_symbol to grow a block. */ |
| 3368 | |
| 3369 | static struct block * |
| 3370 | shrink_block (b, s) |
| 3371 | struct block *b; |
| 3372 | struct symtab *s; |
| 3373 | { |
| 3374 | struct block *new; |
| 3375 | struct blockvector *bv = BLOCKVECTOR (s); |
| 3376 | int i; |
| 3377 | |
| 3378 | /* Just reallocate it and fix references to the old one */ |
| 3379 | |
| 3380 | new = (struct block *) xrealloc ((PTR) b, |
| 3381 | (sizeof (struct block) |
| 3382 | + ((BLOCK_NSYMS (b) - 1) |
| 3383 | * sizeof (struct symbol *)))); |
| 3384 | |
| 3385 | /* Should chase pointers to old one. Fortunately, that`s just |
| 3386 | the block`s function and inferior blocks */ |
| 3387 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) |
| 3388 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; |
| 3389 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) |
| 3390 | if (BLOCKVECTOR_BLOCK (bv, i) == b) |
| 3391 | BLOCKVECTOR_BLOCK (bv, i) = new; |
| 3392 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) |
| 3393 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; |
| 3394 | return new; |
| 3395 | } |
| 3396 | |
| 3397 | /* Create a new symbol with printname NAME */ |
| 3398 | |
| 3399 | static struct symbol * |
| 3400 | new_symbol (name) |
| 3401 | char *name; |
| 3402 | { |
| 3403 | struct symbol *s = ((struct symbol *) |
| 3404 | obstack_alloc (¤t_objfile->symbol_obstack, |
| 3405 | sizeof (struct symbol))); |
| 3406 | |
| 3407 | memset ((PTR) s, 0, sizeof (*s)); |
| 3408 | SYMBOL_NAME (s) = name; |
| 3409 | SYMBOL_LANGUAGE (s) = psymtab_language; |
| 3410 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); |
| 3411 | return s; |
| 3412 | } |
| 3413 | |
| 3414 | /* Create a new type with printname NAME */ |
| 3415 | |
| 3416 | static struct type * |
| 3417 | new_type (name) |
| 3418 | char *name; |
| 3419 | { |
| 3420 | struct type *t; |
| 3421 | |
| 3422 | t = alloc_type (current_objfile); |
| 3423 | TYPE_NAME (t) = name; |
| 3424 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; |
| 3425 | return t; |
| 3426 | } |
| 3427 | \f |
| 3428 | |
| 3429 | /* Things used for calling functions in the inferior. |
| 3430 | These functions are exported to our companion |
| 3431 | mips-tdep.c file and are here because they play |
| 3432 | with the symbol-table explicitly. */ |
| 3433 | |
| 3434 | /* Sigtramp: make sure we have all the necessary information |
| 3435 | about the signal trampoline code. Since the official code |
| 3436 | from MIPS does not do so, we make up that information ourselves. |
| 3437 | If they fix the library (unlikely) this code will neutralize itself. */ |
| 3438 | |
| 3439 | static void |
| 3440 | fixup_sigtramp () |
| 3441 | { |
| 3442 | struct symbol *s; |
| 3443 | struct symtab *st; |
| 3444 | struct block *b, *b0 = NULL; |
| 3445 | |
| 3446 | sigtramp_address = -1; |
| 3447 | |
| 3448 | /* We have to handle the following cases here: |
| 3449 | a) The Mips library has a sigtramp label within sigvec. |
| 3450 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ |
| 3451 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); |
| 3452 | if (s != 0) |
| 3453 | { |
| 3454 | b0 = SYMBOL_BLOCK_VALUE (s); |
| 3455 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); |
| 3456 | } |
| 3457 | if (s == 0) |
| 3458 | { |
| 3459 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ |
| 3460 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); |
| 3461 | } |
| 3462 | |
| 3463 | /* But maybe this program uses its own version of sigvec */ |
| 3464 | if (s == 0) |
| 3465 | return; |
| 3466 | |
| 3467 | /* Did we or MIPSco fix the library ? */ |
| 3468 | if (SYMBOL_CLASS (s) == LOC_BLOCK) |
| 3469 | { |
| 3470 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); |
| 3471 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); |
| 3472 | return; |
| 3473 | } |
| 3474 | |
| 3475 | sigtramp_address = SYMBOL_VALUE (s); |
| 3476 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ |
| 3477 | |
| 3478 | /* But what symtab does it live in ? */ |
| 3479 | st = find_pc_symtab (SYMBOL_VALUE (s)); |
| 3480 | |
| 3481 | /* |
| 3482 | * Ok, there goes the fix: turn it into a procedure, with all the |
| 3483 | * needed info. Note we make it a nested procedure of sigvec, |
| 3484 | * which is the way the (assembly) code is actually written. |
| 3485 | */ |
| 3486 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; |
| 3487 | SYMBOL_CLASS (s) = LOC_BLOCK; |
| 3488 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, |
| 3489 | st->objfile); |
| 3490 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = builtin_type_void; |
| 3491 | |
| 3492 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ |
| 3493 | b = new_block (1); |
| 3494 | SYMBOL_BLOCK_VALUE (s) = b; |
| 3495 | BLOCK_START (b) = sigtramp_address; |
| 3496 | BLOCK_END (b) = sigtramp_end; |
| 3497 | BLOCK_FUNCTION (b) = s; |
| 3498 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); |
| 3499 | add_block (b, st); |
| 3500 | sort_blocks (st); |
| 3501 | |
| 3502 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ |
| 3503 | { |
| 3504 | struct mips_extra_func_info *e = |
| 3505 | ((struct mips_extra_func_info *) |
| 3506 | xzalloc (sizeof (struct mips_extra_func_info))); |
| 3507 | |
| 3508 | e->numargs = 0; /* the kernel thinks otherwise */ |
| 3509 | /* align_longword(sigcontext + SIGFRAME) */ |
| 3510 | e->pdr.frameoffset = 0x150; |
| 3511 | e->pdr.framereg = SP_REGNUM; |
| 3512 | /* read_next_frame_reg provides the true pc at the time of signal */ |
| 3513 | e->pdr.pcreg = PC_REGNUM; |
| 3514 | e->pdr.regmask = -2; |
| 3515 | e->pdr.regoffset = -(41 * sizeof (int)); |
| 3516 | e->pdr.fregmask = -1; |
| 3517 | e->pdr.fregoffset = -(7 * sizeof (int)); |
| 3518 | e->pdr.isym = (long) s; |
| 3519 | e->pdr.adr = sigtramp_address; |
| 3520 | |
| 3521 | current_objfile = st->objfile; /* Keep new_symbol happy */ |
| 3522 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
| 3523 | SYMBOL_VALUE (s) = (long) e; |
| 3524 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
| 3525 | SYMBOL_CLASS (s) = LOC_CONST; |
| 3526 | SYMBOL_TYPE (s) = builtin_type_void; |
| 3527 | current_objfile = NULL; |
| 3528 | } |
| 3529 | |
| 3530 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; |
| 3531 | } |
| 3532 | |
| 3533 | |
| 3534 | /* Fake up identical offsets for all sections. */ |
| 3535 | |
| 3536 | struct section_offsets * |
| 3537 | mipscoff_symfile_offsets (objfile, addr) |
| 3538 | struct objfile *objfile; |
| 3539 | CORE_ADDR addr; |
| 3540 | { |
| 3541 | struct section_offsets *section_offsets; |
| 3542 | int i; |
| 3543 | |
| 3544 | section_offsets = ((struct section_offsets *) |
| 3545 | obstack_alloc (&objfile->psymbol_obstack, |
| 3546 | (sizeof (struct section_offsets) |
| 3547 | + (sizeof (section_offsets->offsets) |
| 3548 | * (SECT_OFF_MAX - 1))))); |
| 3549 | |
| 3550 | for (i = 0; i < SECT_OFF_MAX; i++) |
| 3551 | ANOFFSET (section_offsets, i) = addr; |
| 3552 | |
| 3553 | return section_offsets; |
| 3554 | } |
| 3555 | \f |
| 3556 | /* Initialization */ |
| 3557 | |
| 3558 | static struct sym_fns ecoff_sym_fns = |
| 3559 | { |
| 3560 | "ecoff", /* sym_name: name or name prefix of BFD target type */ |
| 3561 | 5, /* sym_namelen: number of significant sym_name chars */ |
| 3562 | mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
| 3563 | mipscoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ |
| 3564 | mipscoff_symfile_read, /* sym_read: read a symbol file into symtab */ |
| 3565 | mipscoff_symfile_finish, /* sym_finish: finished with file, cleanup */ |
| 3566 | mipscoff_symfile_offsets, /* sym_offsets: dummy FIXME til implem sym reloc */ |
| 3567 | NULL /* next: pointer to next struct sym_fns */ |
| 3568 | }; |
| 3569 | |
| 3570 | |
| 3571 | void |
| 3572 | _initialize_mipsread () |
| 3573 | { |
| 3574 | add_symtab_fns (&ecoff_sym_fns); |
| 3575 | |
| 3576 | /* Missing basic types */ |
| 3577 | |
| 3578 | builtin_type_string = |
| 3579 | init_type (TYPE_CODE_STRING, |
| 3580 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3581 | 0, "string", |
| 3582 | (struct objfile *) NULL); |
| 3583 | builtin_type_complex = |
| 3584 | init_type (TYPE_CODE_FLT, |
| 3585 | TARGET_COMPLEX_BIT / TARGET_CHAR_BIT, |
| 3586 | 0, "complex", |
| 3587 | (struct objfile *) NULL); |
| 3588 | builtin_type_double_complex = |
| 3589 | init_type (TYPE_CODE_FLT, |
| 3590 | TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT, |
| 3591 | 0, "double complex", |
| 3592 | (struct objfile *) NULL); |
| 3593 | builtin_type_fixed_dec = |
| 3594 | init_type (TYPE_CODE_INT, |
| 3595 | TARGET_INT_BIT / TARGET_CHAR_BIT, |
| 3596 | 0, "fixed decimal", |
| 3597 | (struct objfile *) NULL); |
| 3598 | builtin_type_float_dec = |
| 3599 | init_type (TYPE_CODE_FLT, |
| 3600 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, |
| 3601 | 0, "floating decimal", |
| 3602 | (struct objfile *) NULL); |
| 3603 | } |