| 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
| 2 | Copyright (C) 1986-1991 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* This module provides three functions: dbx_symfile_init, |
| 21 | which initializes to read a symbol file; dbx_new_init, which |
| 22 | discards existing cached information when all symbols are being |
| 23 | discarded; and dbx_symfile_read, which reads a symbol table |
| 24 | from a file. |
| 25 | |
| 26 | dbx_symfile_read only does the minimum work necessary for letting the |
| 27 | user "name" things symbolically; it does not read the entire symtab. |
| 28 | Instead, it reads the external and static symbols and puts them in partial |
| 29 | symbol tables. When more extensive information is requested of a |
| 30 | file, the corresponding partial symbol table is mutated into a full |
| 31 | fledged symbol table by going back and reading the symbols |
| 32 | for real. dbx_psymtab_to_symtab() is the function that does this */ |
| 33 | |
| 34 | #include <stdio.h> |
| 35 | #include <string.h> |
| 36 | #include "defs.h" |
| 37 | |
| 38 | #ifdef USG |
| 39 | #include <sys/types.h> |
| 40 | #include <fcntl.h> |
| 41 | #define L_SET 0 |
| 42 | #define L_INCR 1 |
| 43 | #endif |
| 44 | |
| 45 | #include <obstack.h> |
| 46 | #include <sys/param.h> |
| 47 | #include <sys/file.h> |
| 48 | #include <sys/stat.h> |
| 49 | #include <ctype.h> |
| 50 | #include "symtab.h" |
| 51 | #include "breakpoint.h" |
| 52 | #include "command.h" |
| 53 | #include "target.h" |
| 54 | #include "gdbcore.h" /* for bfd stuff */ |
| 55 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
| 56 | #include "symfile.h" |
| 57 | #include "buildsym.h" |
| 58 | |
| 59 | #include "aout/aout64.h" |
| 60 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ |
| 61 | |
| 62 | /* Information is passed among various dbxread routines for accessing |
| 63 | symbol files. A pointer to this structure is kept in the sym_private |
| 64 | field of the struct sym_fns passed in by symfile.h. */ |
| 65 | |
| 66 | struct dbx_symfile_info { |
| 67 | asection *text_sect; /* Text section accessor */ |
| 68 | int symcount; /* How many symbols are there in the file */ |
| 69 | char *stringtab; /* The actual string table */ |
| 70 | int stringtab_size; /* Its size */ |
| 71 | off_t symtab_offset; /* Offset in file to symbol table */ |
| 72 | }; |
| 73 | |
| 74 | |
| 75 | /* Each partial symbol table entry contains a pointer to private data for the |
| 76 | read_symtab() function to use when expanding a partial symbol table entry |
| 77 | to a full symbol table entry. |
| 78 | |
| 79 | For dbxread this structure contains the offset within the file symbol table |
| 80 | of first local symbol for this file, and length (in bytes) of the section |
| 81 | of the symbol table devoted to this file's symbols (actually, the section |
| 82 | bracketed may contain more than just this file's symbols). If ldsymlen is |
| 83 | 0, the only reason for this thing's existence is the dependency list. |
| 84 | Nothing else will happen when it is read in. */ |
| 85 | |
| 86 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
| 87 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) |
| 88 | |
| 89 | struct symloc { |
| 90 | int ldsymoff; |
| 91 | int ldsymlen; |
| 92 | }; |
| 93 | |
| 94 | extern void qsort (); |
| 95 | extern double atof (); |
| 96 | |
| 97 | /* Forward declarations */ |
| 98 | |
| 99 | static void read_dbx_symtab (); |
| 100 | static void init_psymbol_list (); |
| 101 | extern void process_one_symbol (); |
| 102 | void start_subfile (); |
| 103 | int hashname (); |
| 104 | static struct pending *copy_pending (); |
| 105 | static struct symtab *read_ofile_symtab (); |
| 106 | static void dbx_psymtab_to_symtab (); |
| 107 | |
| 108 | /* Macro to determine which symbols to ignore when reading the first symbol |
| 109 | of a file. Some machines override this definition. */ |
| 110 | #ifndef IGNORE_SYMBOL |
| 111 | /* This code is used on Ultrix systems. Ignore it */ |
| 112 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) |
| 113 | #endif |
| 114 | |
| 115 | /* Macro for name of symbol to indicate a file compiled with gcc. */ |
| 116 | #ifndef GCC_COMPILED_FLAG_SYMBOL |
| 117 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." |
| 118 | #endif |
| 119 | |
| 120 | /* Define this as 1 if a pcc declaration of a char or short argument |
| 121 | gives the correct address. Otherwise assume pcc gives the |
| 122 | address of the corresponding int, which is not the same on a |
| 123 | big-endian machine. */ |
| 124 | |
| 125 | #ifndef BELIEVE_PCC_PROMOTION |
| 126 | #define BELIEVE_PCC_PROMOTION 0 |
| 127 | #endif |
| 128 | |
| 129 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
| 130 | extern int info_verbose; |
| 131 | |
| 132 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
| 133 | |
| 134 | static bfd *symfile_bfd; |
| 135 | |
| 136 | /* The objfile for this file -- only good in process_one_symbol(). */ |
| 137 | |
| 138 | static struct objfile *our_objfile; |
| 139 | |
| 140 | /* String table for the main symbol file. It is kept in memory |
| 141 | permanently, to speed up symbol reading. Other files' symbol tables |
| 142 | are read in on demand. FIXME, this should be cleaner. */ |
| 143 | |
| 144 | static char *symfile_string_table; |
| 145 | static int symfile_string_table_size; |
| 146 | |
| 147 | /* The size of each symbol in the symbol file (in external form). |
| 148 | This is set by dbx_symfile_read when building psymtabs, and by |
| 149 | dbx_psymtab_to_symtab when building symtabs. */ |
| 150 | |
| 151 | static unsigned symbol_size; |
| 152 | |
| 153 | /* Complaints about the symbols we have encountered. */ |
| 154 | |
| 155 | struct complaint lbrac_complaint = |
| 156 | {"bad block start address patched", 0, 0}; |
| 157 | |
| 158 | struct complaint string_table_offset_complaint = |
| 159 | {"bad string table offset in symbol %d", 0, 0}; |
| 160 | |
| 161 | struct complaint unknown_symtype_complaint = |
| 162 | {"unknown symbol type %s", 0, 0}; |
| 163 | |
| 164 | struct complaint lbrac_rbrac_complaint = |
| 165 | {"block start larger than block end", 0, 0}; |
| 166 | |
| 167 | struct complaint lbrac_unmatched_complaint = |
| 168 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; |
| 169 | |
| 170 | struct complaint lbrac_mismatch_complaint = |
| 171 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; |
| 172 | \f |
| 173 | /* During initial symbol readin, we need to have a structure to keep |
| 174 | track of which psymtabs have which bincls in them. This structure |
| 175 | is used during readin to setup the list of dependencies within each |
| 176 | partial symbol table. */ |
| 177 | |
| 178 | struct header_file_location |
| 179 | { |
| 180 | char *name; /* Name of header file */ |
| 181 | int instance; /* See above */ |
| 182 | struct partial_symtab *pst; /* Partial symtab that has the |
| 183 | BINCL/EINCL defs for this file */ |
| 184 | }; |
| 185 | |
| 186 | /* The actual list and controling variables */ |
| 187 | static struct header_file_location *bincl_list, *next_bincl; |
| 188 | static int bincls_allocated; |
| 189 | |
| 190 | /* Free up old header file tables, and allocate new ones. |
| 191 | We're reading a new symbol file now. */ |
| 192 | |
| 193 | void |
| 194 | free_and_init_header_files () |
| 195 | { |
| 196 | register int i; |
| 197 | for (i = 0; i < n_header_files; i++) |
| 198 | free (header_files[i].name); |
| 199 | if (header_files) /* First time null */ |
| 200 | free (header_files); |
| 201 | if (this_object_header_files) /* First time null */ |
| 202 | free (this_object_header_files); |
| 203 | |
| 204 | n_allocated_header_files = 10; |
| 205 | header_files = (struct header_file *) xmalloc (10 * sizeof (struct header_file)); |
| 206 | n_header_files = 0; |
| 207 | |
| 208 | n_allocated_this_object_header_files = 10; |
| 209 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); |
| 210 | } |
| 211 | |
| 212 | /* Called at the start of each object file's symbols. |
| 213 | Clear out the mapping of header file numbers to header files. */ |
| 214 | |
| 215 | void |
| 216 | new_object_header_files () |
| 217 | { |
| 218 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ |
| 219 | n_this_object_header_files = 1; |
| 220 | header_file_prev_index = -1; |
| 221 | } |
| 222 | |
| 223 | /* Add header file number I for this object file |
| 224 | at the next successive FILENUM. */ |
| 225 | |
| 226 | static void |
| 227 | add_this_object_header_file (i) |
| 228 | int i; |
| 229 | { |
| 230 | if (n_this_object_header_files == n_allocated_this_object_header_files) |
| 231 | { |
| 232 | n_allocated_this_object_header_files *= 2; |
| 233 | this_object_header_files |
| 234 | = (int *) xrealloc (this_object_header_files, |
| 235 | n_allocated_this_object_header_files * sizeof (int)); |
| 236 | } |
| 237 | |
| 238 | this_object_header_files[n_this_object_header_files++] = i; |
| 239 | } |
| 240 | |
| 241 | /* Add to this file an "old" header file, one already seen in |
| 242 | a previous object file. NAME is the header file's name. |
| 243 | INSTANCE is its instance code, to select among multiple |
| 244 | symbol tables for the same header file. */ |
| 245 | |
| 246 | static void |
| 247 | add_old_header_file (name, instance) |
| 248 | char *name; |
| 249 | int instance; |
| 250 | { |
| 251 | register struct header_file *p = header_files; |
| 252 | register int i; |
| 253 | |
| 254 | for (i = 0; i < n_header_files; i++) |
| 255 | if (!strcmp (p[i].name, name) && instance == p[i].instance) |
| 256 | { |
| 257 | add_this_object_header_file (i); |
| 258 | return; |
| 259 | } |
| 260 | error ("Invalid symbol data: \"repeated\" header file that hasn't been seen before, at symtab pos %d.", |
| 261 | symnum); |
| 262 | } |
| 263 | |
| 264 | /* Add to this file a "new" header file: definitions for its types follow. |
| 265 | NAME is the header file's name. |
| 266 | Most often this happens only once for each distinct header file, |
| 267 | but not necessarily. If it happens more than once, INSTANCE has |
| 268 | a different value each time, and references to the header file |
| 269 | use INSTANCE values to select among them. |
| 270 | |
| 271 | dbx output contains "begin" and "end" markers for each new header file, |
| 272 | but at this level we just need to know which files there have been; |
| 273 | so we record the file when its "begin" is seen and ignore the "end". */ |
| 274 | |
| 275 | static void |
| 276 | add_new_header_file (name, instance) |
| 277 | char *name; |
| 278 | int instance; |
| 279 | { |
| 280 | register int i; |
| 281 | header_file_prev_index = -1; |
| 282 | |
| 283 | /* Make sure there is room for one more header file. */ |
| 284 | |
| 285 | if (n_header_files == n_allocated_header_files) |
| 286 | { |
| 287 | n_allocated_header_files *= 2; |
| 288 | header_files = (struct header_file *) |
| 289 | xrealloc (header_files, |
| 290 | (n_allocated_header_files |
| 291 | * sizeof (struct header_file))); |
| 292 | } |
| 293 | |
| 294 | /* Create an entry for this header file. */ |
| 295 | |
| 296 | i = n_header_files++; |
| 297 | header_files[i].name = savestring (name, strlen(name)); |
| 298 | header_files[i].instance = instance; |
| 299 | header_files[i].length = 10; |
| 300 | header_files[i].vector |
| 301 | = (struct type **) xmalloc (10 * sizeof (struct type *)); |
| 302 | bzero (header_files[i].vector, 10 * sizeof (struct type *)); |
| 303 | |
| 304 | add_this_object_header_file (i); |
| 305 | } |
| 306 | |
| 307 | #if 0 |
| 308 | static struct type ** |
| 309 | explicit_lookup_type (real_filenum, index) |
| 310 | int real_filenum, index; |
| 311 | { |
| 312 | register struct header_file *f = &header_files[real_filenum]; |
| 313 | |
| 314 | if (index >= f->length) |
| 315 | { |
| 316 | f->length *= 2; |
| 317 | f->vector = (struct type **) |
| 318 | xrealloc (f->vector, f->length * sizeof (struct type *)); |
| 319 | bzero (&f->vector[f->length / 2], |
| 320 | f->length * sizeof (struct type *) / 2); |
| 321 | } |
| 322 | return &f->vector[index]; |
| 323 | } |
| 324 | #endif |
| 325 | \f |
| 326 | static void |
| 327 | record_misc_function (name, address, type) |
| 328 | char *name; |
| 329 | CORE_ADDR address; |
| 330 | int type; |
| 331 | { |
| 332 | enum misc_function_type misc_type; |
| 333 | |
| 334 | switch (type &~ N_EXT) { |
| 335 | case N_TEXT: misc_type = mf_text; break; |
| 336 | case N_DATA: misc_type = mf_data; break; |
| 337 | case N_BSS: misc_type = mf_bss; break; |
| 338 | case N_ABS: misc_type = mf_abs; break; |
| 339 | #ifdef N_SETV |
| 340 | case N_SETV: misc_type = mf_data; break; |
| 341 | #endif |
| 342 | default: misc_type = mf_unknown; break; |
| 343 | } |
| 344 | |
| 345 | prim_record_misc_function (obsavestring (name, strlen (name)), |
| 346 | address, misc_type); |
| 347 | } |
| 348 | \f |
| 349 | /* Scan and build partial symbols for a symbol file. |
| 350 | We have been initialized by a call to dbx_symfile_init, which |
| 351 | put all the relevant info into a "struct dbx_symfile_info" |
| 352 | hung off the struct sym_fns SF. |
| 353 | |
| 354 | ADDR is the address relative to which the symbols in it are (e.g. |
| 355 | the base address of the text segment). |
| 356 | MAINLINE is true if we are reading the main symbol |
| 357 | table (as opposed to a shared lib or dynamically loaded file). */ |
| 358 | |
| 359 | static void |
| 360 | dbx_symfile_read (sf, addr, mainline) |
| 361 | struct sym_fns *sf; |
| 362 | CORE_ADDR addr; |
| 363 | int mainline; /* FIXME comments above */ |
| 364 | { |
| 365 | struct dbx_symfile_info *info = (struct dbx_symfile_info *) (sf->sym_private); |
| 366 | bfd *sym_bfd = sf->objfile->obfd; |
| 367 | int val; |
| 368 | |
| 369 | val = bfd_seek (sf->objfile->obfd, info->symtab_offset, L_SET); |
| 370 | if (val < 0) |
| 371 | perror_with_name (sf->objfile->name); |
| 372 | |
| 373 | /* If mainline, set global string table pointers, and reinitialize global |
| 374 | partial symbol list. */ |
| 375 | if (mainline) { |
| 376 | symfile_string_table = info->stringtab; |
| 377 | symfile_string_table_size = info->stringtab_size; |
| 378 | } |
| 379 | |
| 380 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
| 381 | if (mainline || global_psymbols.size == 0 || static_psymbols.size == 0) |
| 382 | init_psymbol_list (info->symcount); |
| 383 | |
| 384 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 385 | symbol_size = obj_symbol_entry_size (sym_bfd); |
| 386 | |
| 387 | pending_blocks = 0; |
| 388 | make_cleanup (really_free_pendings, 0); |
| 389 | |
| 390 | init_misc_bunches (); |
| 391 | make_cleanup (discard_misc_bunches, 0); |
| 392 | |
| 393 | /* Now that the symbol table data of the executable file are all in core, |
| 394 | process them and define symbols accordingly. */ |
| 395 | |
| 396 | read_dbx_symtab (addr - bfd_section_vma (sym_bfd, info->text_sect), /*offset*/ |
| 397 | sf->objfile, info->stringtab, info->stringtab_size, |
| 398 | info->symcount, |
| 399 | bfd_section_vma (sym_bfd, info->text_sect), |
| 400 | bfd_section_size (sym_bfd, info->text_sect)); |
| 401 | |
| 402 | /* Go over the misc symbol bunches and install them in vector. */ |
| 403 | |
| 404 | condense_misc_bunches (!mainline); |
| 405 | |
| 406 | /* Free up any memory we allocated for ourselves. */ |
| 407 | |
| 408 | if (!mainline) { |
| 409 | free (info->stringtab); /* Stringtab is only saved for mainline */ |
| 410 | } |
| 411 | free (info); |
| 412 | sf->sym_private = 0; /* Zap pointer to our (now gone) info struct */ |
| 413 | |
| 414 | if (!partial_symtab_list) { |
| 415 | wrap_here (""); |
| 416 | printf_filtered ("(no debugging symbols found)..."); |
| 417 | wrap_here (""); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | /* Initialize anything that needs initializing when a completely new |
| 422 | symbol file is specified (not just adding some symbols from another |
| 423 | file, e.g. a shared library). */ |
| 424 | |
| 425 | static void |
| 426 | dbx_new_init () |
| 427 | { |
| 428 | buildsym_new_init (); |
| 429 | |
| 430 | /* Don't put these on the cleanup chain; they need to stick around |
| 431 | until the next call to dbx_new_init. *Then* we'll free them. */ |
| 432 | if (symfile_string_table) |
| 433 | { |
| 434 | free (symfile_string_table); |
| 435 | symfile_string_table = 0; |
| 436 | symfile_string_table_size = 0; |
| 437 | } |
| 438 | free_and_init_header_files (); |
| 439 | } |
| 440 | |
| 441 | |
| 442 | /* dbx_symfile_init () |
| 443 | is the dbx-specific initialization routine for reading symbols. |
| 444 | It is passed a struct sym_fns which contains, among other things, |
| 445 | the BFD for the file whose symbols are being read, and a slot for a pointer |
| 446 | to "private data" which we fill with goodies. |
| 447 | |
| 448 | We read the string table into malloc'd space and stash a pointer to it. |
| 449 | |
| 450 | Since BFD doesn't know how to read debug symbols in a format-independent |
| 451 | way (and may never do so...), we have to do it ourselves. We will never |
| 452 | be called unless this is an a.out (or very similar) file. |
| 453 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
| 454 | |
| 455 | static void |
| 456 | dbx_symfile_init (sf) |
| 457 | struct sym_fns *sf; |
| 458 | { |
| 459 | int val; |
| 460 | bfd *sym_bfd = sf->objfile->obfd; |
| 461 | char *name = bfd_get_filename (sym_bfd); |
| 462 | struct dbx_symfile_info *info; |
| 463 | unsigned char size_temp[4]; |
| 464 | |
| 465 | /* Allocate struct to keep track of the symfile */ |
| 466 | sf->sym_private = xmalloc (sizeof (*info)); |
| 467 | info = (struct dbx_symfile_info *)sf->sym_private; |
| 468 | |
| 469 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 470 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
| 471 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) |
| 472 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 473 | |
| 474 | info->text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
| 475 | if (!info->text_sect) |
| 476 | abort(); |
| 477 | info->symcount = bfd_get_symcount (sym_bfd); |
| 478 | |
| 479 | /* Read the string table size and check it for bogosity. */ |
| 480 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
| 481 | if (val < 0) |
| 482 | perror_with_name (name); |
| 483 | |
| 484 | val = bfd_read (size_temp, sizeof (long), 1, sym_bfd); |
| 485 | if (val < 0) |
| 486 | perror_with_name (name); |
| 487 | info->stringtab_size = bfd_h_get_32 (sym_bfd, size_temp); |
| 488 | |
| 489 | if (info->stringtab_size >= 0) |
| 490 | { |
| 491 | info->stringtab = (char *) xmalloc (info->stringtab_size); |
| 492 | /* Caller is responsible for freeing the string table. No cleanup. */ |
| 493 | } |
| 494 | else |
| 495 | info->stringtab = NULL; |
| 496 | if (info->stringtab == NULL && info->stringtab_size != 0) |
| 497 | error ("ridiculous string table size: %d bytes", info->stringtab_size); |
| 498 | |
| 499 | /* Now read in the string table in one big gulp. */ |
| 500 | |
| 501 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
| 502 | if (val < 0) |
| 503 | perror_with_name (name); |
| 504 | val = bfd_read (info->stringtab, info->stringtab_size, 1, sym_bfd); |
| 505 | if (val != info->stringtab_size) |
| 506 | perror_with_name (name); |
| 507 | |
| 508 | /* Record the position of the symbol table for later use. */ |
| 509 | |
| 510 | info->symtab_offset = SYMBOL_TABLE_OFFSET; |
| 511 | } |
| 512 | \f |
| 513 | /* Buffer for reading the symbol table entries. */ |
| 514 | static struct internal_nlist symbuf[4096]; |
| 515 | static int symbuf_idx; |
| 516 | static int symbuf_end; |
| 517 | |
| 518 | /* The address in memory of the string table of the object file we are |
| 519 | reading (which might not be the "main" object file, but might be a |
| 520 | shared library or some other dynamically loaded thing). This is set |
| 521 | by read_dbx_symtab when building psymtabs, and by read_ofile_symtab |
| 522 | when building symtabs, and is used only by next_symbol_text. */ |
| 523 | static char *stringtab_global; |
| 524 | |
| 525 | /* Refill the symbol table input buffer |
| 526 | and set the variables that control fetching entries from it. |
| 527 | Reports an error if no data available. |
| 528 | This function can read past the end of the symbol table |
| 529 | (into the string table) but this does no harm. */ |
| 530 | |
| 531 | static void |
| 532 | fill_symbuf (sym_bfd) |
| 533 | bfd *sym_bfd; |
| 534 | { |
| 535 | int nbytes = bfd_read (symbuf, sizeof (symbuf), 1, sym_bfd); |
| 536 | if (nbytes < 0) |
| 537 | perror_with_name (bfd_get_filename (sym_bfd)); |
| 538 | else if (nbytes == 0) |
| 539 | error ("Premature end of file reading symbol table"); |
| 540 | symbuf_end = nbytes / symbol_size; |
| 541 | symbuf_idx = 0; |
| 542 | } |
| 543 | |
| 544 | #define SWAP_SYMBOL(symp, abfd) \ |
| 545 | { \ |
| 546 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
| 547 | (unsigned char *)&(symp)->n_strx); \ |
| 548 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
| 549 | (unsigned char *)&(symp)->n_desc); \ |
| 550 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
| 551 | (unsigned char *)&(symp)->n_value); \ |
| 552 | } |
| 553 | |
| 554 | /* Invariant: The symbol pointed to by symbuf_idx is the first one |
| 555 | that hasn't been swapped. Swap the symbol at the same time |
| 556 | that symbuf_idx is incremented. */ |
| 557 | |
| 558 | /* dbx allows the text of a symbol name to be continued into the |
| 559 | next symbol name! When such a continuation is encountered |
| 560 | (a \ at the end of the text of a name) |
| 561 | call this function to get the continuation. */ |
| 562 | |
| 563 | #ifdef READ_MIPS_FORMAT |
| 564 | extern char *next_symbol_text (); |
| 565 | #else |
| 566 | char * |
| 567 | next_symbol_text () |
| 568 | { |
| 569 | if (symbuf_idx == symbuf_end) |
| 570 | fill_symbuf (symfile_bfd); |
| 571 | symnum++; |
| 572 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
| 573 | return symbuf[symbuf_idx++].n_strx + stringtab_global; |
| 574 | } |
| 575 | #endif |
| 576 | \f |
| 577 | /* Initializes storage for all of the partial symbols that will be |
| 578 | created by read_dbx_symtab and subsidiaries. */ |
| 579 | |
| 580 | static void |
| 581 | init_psymbol_list (total_symbols) |
| 582 | int total_symbols; |
| 583 | { |
| 584 | /* Free any previously allocated psymbol lists. */ |
| 585 | if (global_psymbols.list) |
| 586 | free (global_psymbols.list); |
| 587 | if (static_psymbols.list) |
| 588 | free (static_psymbols.list); |
| 589 | |
| 590 | /* Current best guess is that there are approximately a twentieth |
| 591 | of the total symbols (in a debugging file) are global or static |
| 592 | oriented symbols */ |
| 593 | global_psymbols.size = total_symbols / 10; |
| 594 | static_psymbols.size = total_symbols / 10; |
| 595 | global_psymbols.next = global_psymbols.list = (struct partial_symbol *) |
| 596 | xmalloc (global_psymbols.size * sizeof (struct partial_symbol)); |
| 597 | static_psymbols.next = static_psymbols.list = (struct partial_symbol *) |
| 598 | xmalloc (static_psymbols.size * sizeof (struct partial_symbol)); |
| 599 | } |
| 600 | |
| 601 | /* Initialize the list of bincls to contain none and have some |
| 602 | allocated. */ |
| 603 | |
| 604 | static void |
| 605 | init_bincl_list (number) |
| 606 | int number; |
| 607 | { |
| 608 | bincls_allocated = number; |
| 609 | next_bincl = bincl_list = (struct header_file_location *) |
| 610 | xmalloc (bincls_allocated * sizeof(struct header_file_location)); |
| 611 | } |
| 612 | |
| 613 | /* Add a bincl to the list. */ |
| 614 | |
| 615 | static void |
| 616 | add_bincl_to_list (pst, name, instance) |
| 617 | struct partial_symtab *pst; |
| 618 | char *name; |
| 619 | int instance; |
| 620 | { |
| 621 | if (next_bincl >= bincl_list + bincls_allocated) |
| 622 | { |
| 623 | int offset = next_bincl - bincl_list; |
| 624 | bincls_allocated *= 2; |
| 625 | bincl_list = (struct header_file_location *) |
| 626 | xrealloc ((char *)bincl_list, |
| 627 | bincls_allocated * sizeof (struct header_file_location)); |
| 628 | next_bincl = bincl_list + offset; |
| 629 | } |
| 630 | next_bincl->pst = pst; |
| 631 | next_bincl->instance = instance; |
| 632 | next_bincl++->name = name; |
| 633 | } |
| 634 | |
| 635 | /* Given a name, value pair, find the corresponding |
| 636 | bincl in the list. Return the partial symtab associated |
| 637 | with that header_file_location. */ |
| 638 | |
| 639 | static struct partial_symtab * |
| 640 | find_corresponding_bincl_psymtab (name, instance) |
| 641 | char *name; |
| 642 | int instance; |
| 643 | { |
| 644 | struct header_file_location *bincl; |
| 645 | |
| 646 | for (bincl = bincl_list; bincl < next_bincl; bincl++) |
| 647 | if (bincl->instance == instance |
| 648 | && !strcmp (name, bincl->name)) |
| 649 | return bincl->pst; |
| 650 | |
| 651 | return (struct partial_symtab *) 0; |
| 652 | } |
| 653 | |
| 654 | /* Free the storage allocated for the bincl list. */ |
| 655 | |
| 656 | static void |
| 657 | free_bincl_list () |
| 658 | { |
| 659 | free (bincl_list); |
| 660 | bincls_allocated = 0; |
| 661 | } |
| 662 | |
| 663 | /* Given pointers to an a.out symbol table in core containing dbx |
| 664 | style data, setup partial_symtab's describing each source file for |
| 665 | which debugging information is available. NLISTLEN is the number |
| 666 | of symbols in the symbol table. All symbol names are given as |
| 667 | offsets relative to STRINGTAB. STRINGTAB_SIZE is the size of |
| 668 | STRINGTAB. SYMFILE_NAME is the name of the file we are reading from |
| 669 | and ADDR is its relocated address (if incremental) or 0 (if not). */ |
| 670 | |
| 671 | static void |
| 672 | read_dbx_symtab (addr, objfile, stringtab, stringtab_size, nlistlen, |
| 673 | text_addr, text_size) |
| 674 | CORE_ADDR addr; |
| 675 | struct objfile *objfile; |
| 676 | register char *stringtab; |
| 677 | register long stringtab_size; |
| 678 | register int nlistlen; |
| 679 | CORE_ADDR text_addr; |
| 680 | int text_size; |
| 681 | { |
| 682 | register struct internal_nlist *bufp; |
| 683 | register char *namestring; |
| 684 | int nsl; |
| 685 | int past_first_source_file = 0; |
| 686 | CORE_ADDR last_o_file_start = 0; |
| 687 | struct cleanup *old_chain; |
| 688 | bfd *abfd; |
| 689 | |
| 690 | /* End of the text segment of the executable file. */ |
| 691 | CORE_ADDR end_of_text_addr; |
| 692 | |
| 693 | /* Current partial symtab */ |
| 694 | struct partial_symtab *pst; |
| 695 | |
| 696 | /* List of current psymtab's include files */ |
| 697 | char **psymtab_include_list; |
| 698 | int includes_allocated; |
| 699 | int includes_used; |
| 700 | |
| 701 | /* Index within current psymtab dependency list */ |
| 702 | struct partial_symtab **dependency_list; |
| 703 | int dependencies_used, dependencies_allocated; |
| 704 | |
| 705 | stringtab_global = stringtab; |
| 706 | |
| 707 | pst = (struct partial_symtab *) 0; |
| 708 | |
| 709 | includes_allocated = 30; |
| 710 | includes_used = 0; |
| 711 | psymtab_include_list = (char **) alloca (includes_allocated * |
| 712 | sizeof (char *)); |
| 713 | |
| 714 | dependencies_allocated = 30; |
| 715 | dependencies_used = 0; |
| 716 | dependency_list = |
| 717 | (struct partial_symtab **) alloca (dependencies_allocated * |
| 718 | sizeof (struct partial_symtab *)); |
| 719 | |
| 720 | old_chain = make_cleanup (free_objfile, objfile); |
| 721 | |
| 722 | /* Init bincl list */ |
| 723 | init_bincl_list (20); |
| 724 | make_cleanup (free_bincl_list, 0); |
| 725 | |
| 726 | last_source_file = 0; |
| 727 | |
| 728 | #ifdef END_OF_TEXT_DEFAULT |
| 729 | end_of_text_addr = END_OF_TEXT_DEFAULT; |
| 730 | #else |
| 731 | end_of_text_addr = text_addr + addr + text_size; /* Relocate */ |
| 732 | #endif |
| 733 | |
| 734 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
| 735 | abfd = objfile->obfd; |
| 736 | symbuf_end = symbuf_idx = 0; |
| 737 | |
| 738 | for (symnum = 0; symnum < nlistlen; symnum++) |
| 739 | { |
| 740 | /* Get the symbol for this run and pull out some info */ |
| 741 | QUIT; /* allow this to be interruptable */ |
| 742 | if (symbuf_idx == symbuf_end) |
| 743 | fill_symbuf (abfd); |
| 744 | bufp = &symbuf[symbuf_idx++]; |
| 745 | |
| 746 | /* |
| 747 | * Special case to speed up readin. |
| 748 | */ |
| 749 | if (bufp->n_type == (unsigned char)N_SLINE) continue; |
| 750 | |
| 751 | SWAP_SYMBOL (bufp, abfd); |
| 752 | |
| 753 | /* Ok. There is a lot of code duplicated in the rest of this |
| 754 | switch statement (for efficiency reasons). Since I don't |
| 755 | like duplicating code, I will do my penance here, and |
| 756 | describe the code which is duplicated: |
| 757 | |
| 758 | *) The assignment to namestring. |
| 759 | *) The call to strchr. |
| 760 | *) The addition of a partial symbol the the two partial |
| 761 | symbol lists. This last is a large section of code, so |
| 762 | I've imbedded it in the following macro. |
| 763 | */ |
| 764 | |
| 765 | /* Set namestring based on bufp. If the string table index is invalid, |
| 766 | give a fake name, and print a single error message per symbol file read, |
| 767 | rather than abort the symbol reading or flood the user with messages. */ |
| 768 | #define SET_NAMESTRING()\ |
| 769 | if (((unsigned)bufp->n_strx) >= stringtab_size) { \ |
| 770 | complain (&string_table_offset_complaint, symnum); \ |
| 771 | namestring = "foo"; \ |
| 772 | } else \ |
| 773 | namestring = bufp->n_strx + stringtab |
| 774 | |
| 775 | #define CUR_SYMBOL_TYPE bufp->n_type |
| 776 | #define CUR_SYMBOL_VALUE bufp->n_value |
| 777 | #define DBXREAD_ONLY |
| 778 | #define CHECK_SECOND_N_SO() \ |
| 779 | if (symbuf_idx == symbuf_end) \ |
| 780 | fill_symbuf (abfd);\ |
| 781 | bufp = &symbuf[symbuf_idx];\ |
| 782 | /* n_type is only a char, so swapping swapping is irrelevant. */\ |
| 783 | if (CUR_SYMBOL_TYPE == (unsigned char)N_SO)\ |
| 784 | {\ |
| 785 | SWAP_SYMBOL (bufp, abfd);\ |
| 786 | SET_NAMESTRING ();\ |
| 787 | valu = CUR_SYMBOL_VALUE;\ |
| 788 | symbuf_idx++;\ |
| 789 | symnum++;\ |
| 790 | } |
| 791 | #define START_PSYMTAB(ofile,addr,fname,low,symoff,global_syms,static_syms)\ |
| 792 | start_psymtab(ofile, addr, fname, low, symoff, global_syms, static_syms) |
| 793 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
| 794 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) |
| 795 | #include "partial-stab.h" |
| 796 | } |
| 797 | |
| 798 | /* If there's stuff to be cleaned up, clean it up. */ |
| 799 | if (nlistlen > 0 /* We have some syms */ |
| 800 | && entry_point < bufp->n_value |
| 801 | && entry_point >= last_o_file_start) |
| 802 | { |
| 803 | startup_file_start = last_o_file_start; |
| 804 | startup_file_end = bufp->n_value; |
| 805 | } |
| 806 | |
| 807 | if (pst) |
| 808 | { |
| 809 | end_psymtab (pst, psymtab_include_list, includes_used, |
| 810 | symnum * symbol_size, end_of_text_addr, |
| 811 | dependency_list, dependencies_used); |
| 812 | } |
| 813 | |
| 814 | free_bincl_list (); |
| 815 | discard_cleanups (old_chain); |
| 816 | } |
| 817 | |
| 818 | /* Allocate and partially fill a partial symtab. It will be |
| 819 | completely filled at the end of the symbol list. |
| 820 | |
| 821 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR |
| 822 | is the address relative to which its symbols are (incremental) or 0 |
| 823 | (normal). */ |
| 824 | |
| 825 | |
| 826 | struct partial_symtab * |
| 827 | start_psymtab (objfile, addr, |
| 828 | filename, textlow, ldsymoff, global_syms, static_syms) |
| 829 | struct objfile *objfile; |
| 830 | CORE_ADDR addr; |
| 831 | char *filename; |
| 832 | CORE_ADDR textlow; |
| 833 | int ldsymoff; |
| 834 | struct partial_symbol *global_syms; |
| 835 | struct partial_symbol *static_syms; |
| 836 | { |
| 837 | struct partial_symtab *result = |
| 838 | (struct partial_symtab *) obstack_alloc (psymbol_obstack, |
| 839 | sizeof (struct partial_symtab)); |
| 840 | |
| 841 | result->addr = addr; |
| 842 | |
| 843 | result->filename = |
| 844 | (char *) obstack_alloc (psymbol_obstack, |
| 845 | strlen (filename) + 1); |
| 846 | strcpy (result->filename, filename); |
| 847 | |
| 848 | result->textlow = textlow; |
| 849 | result->read_symtab_private = (char *) obstack_alloc (psymbol_obstack, |
| 850 | sizeof (struct symloc)); |
| 851 | if (ldsymoff != -1) |
| 852 | LDSYMOFF(result) = ldsymoff; |
| 853 | |
| 854 | result->readin = 0; |
| 855 | result->symtab = 0; |
| 856 | result->read_symtab = dbx_psymtab_to_symtab; |
| 857 | |
| 858 | result->globals_offset = global_syms - global_psymbols.list; |
| 859 | result->statics_offset = static_syms - static_psymbols.list; |
| 860 | |
| 861 | result->n_global_syms = 0; |
| 862 | result->n_static_syms = 0; |
| 863 | |
| 864 | /* Chain it to the list owned by the current object file. */ |
| 865 | result->objfile = objfile; |
| 866 | result->objfile_chain = objfile->psymtabs; |
| 867 | objfile->psymtabs = result; |
| 868 | |
| 869 | return result; |
| 870 | } |
| 871 | |
| 872 | static int |
| 873 | compare_psymbols (s1, s2) |
| 874 | register struct partial_symbol *s1, *s2; |
| 875 | { |
| 876 | register char |
| 877 | *st1 = SYMBOL_NAME (s1), |
| 878 | *st2 = SYMBOL_NAME (s2); |
| 879 | |
| 880 | if (st1[0] - st2[0]) |
| 881 | return st1[0] - st2[0]; |
| 882 | if (st1[1] - st2[1]) |
| 883 | return st1[1] - st2[1]; |
| 884 | return strcmp (st1 + 2, st2 + 2); |
| 885 | } |
| 886 | |
| 887 | /* Close off the current usage of a partial_symbol table entry. This |
| 888 | involves setting the correct number of includes (with a realloc), |
| 889 | setting the high text mark, setting the symbol length in the |
| 890 | executable, and setting the length of the global and static lists |
| 891 | of psymbols. |
| 892 | |
| 893 | The global symbols and static symbols are then seperately sorted. |
| 894 | |
| 895 | Then the partial symtab is put on the global list. |
| 896 | *** List variables and peculiarities of same. *** |
| 897 | */ |
| 898 | void |
| 899 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
| 900 | capping_text, dependency_list, number_dependencies) |
| 901 | struct partial_symtab *pst; |
| 902 | char **include_list; |
| 903 | int num_includes; |
| 904 | int capping_symbol_offset; |
| 905 | CORE_ADDR capping_text; |
| 906 | struct partial_symtab **dependency_list; |
| 907 | int number_dependencies; |
| 908 | /* struct partial_symbol *capping_global, *capping_static;*/ |
| 909 | { |
| 910 | int i; |
| 911 | |
| 912 | if (capping_symbol_offset != -1) |
| 913 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); |
| 914 | pst->texthigh = capping_text; |
| 915 | |
| 916 | pst->n_global_syms = |
| 917 | global_psymbols.next - (global_psymbols.list + pst->globals_offset); |
| 918 | pst->n_static_syms = |
| 919 | static_psymbols.next - (static_psymbols.list + pst->statics_offset); |
| 920 | |
| 921 | pst->number_of_dependencies = number_dependencies; |
| 922 | if (number_dependencies) |
| 923 | { |
| 924 | pst->dependencies = (struct partial_symtab **) |
| 925 | obstack_alloc (psymbol_obstack, |
| 926 | number_dependencies * sizeof (struct partial_symtab *)); |
| 927 | memcpy (pst->dependencies, dependency_list, |
| 928 | number_dependencies * sizeof (struct partial_symtab *)); |
| 929 | } |
| 930 | else |
| 931 | pst->dependencies = 0; |
| 932 | |
| 933 | for (i = 0; i < num_includes; i++) |
| 934 | { |
| 935 | struct partial_symtab *subpst = |
| 936 | (struct partial_symtab *) |
| 937 | obstack_alloc (psymbol_obstack, |
| 938 | sizeof (struct partial_symtab)); |
| 939 | |
| 940 | subpst->filename = |
| 941 | (char *) obstack_alloc (psymbol_obstack, |
| 942 | strlen (include_list[i]) + 1); |
| 943 | strcpy (subpst->filename, include_list[i]); |
| 944 | |
| 945 | /* Chain it to the list that this object file owns. */ |
| 946 | subpst->objfile = pst->objfile; |
| 947 | subpst->objfile_chain = pst->objfile->psymtabs; |
| 948 | pst->objfile->psymtabs = subpst; |
| 949 | |
| 950 | subpst->addr = pst->addr; |
| 951 | subpst->read_symtab_private = (char *) obstack_alloc (psymbol_obstack, |
| 952 | sizeof (struct symloc)); |
| 953 | LDSYMOFF(subpst) = |
| 954 | LDSYMLEN(subpst) = |
| 955 | subpst->textlow = |
| 956 | subpst->texthigh = 0; |
| 957 | |
| 958 | /* We could save slight bits of space by only making one of these, |
| 959 | shared by the entire set of include files. FIXME-someday. */ |
| 960 | subpst->dependencies = (struct partial_symtab **) |
| 961 | obstack_alloc (psymbol_obstack, |
| 962 | sizeof (struct partial_symtab *)); |
| 963 | subpst->dependencies[0] = pst; |
| 964 | subpst->number_of_dependencies = 1; |
| 965 | |
| 966 | subpst->globals_offset = |
| 967 | subpst->n_global_syms = |
| 968 | subpst->statics_offset = |
| 969 | subpst->n_static_syms = 0; |
| 970 | |
| 971 | subpst->readin = 0; |
| 972 | subpst->symtab = 0; |
| 973 | subpst->read_symtab = dbx_psymtab_to_symtab; |
| 974 | |
| 975 | subpst->next = partial_symtab_list; |
| 976 | partial_symtab_list = subpst; |
| 977 | } |
| 978 | |
| 979 | /* Sort the global list; don't sort the static list */ |
| 980 | qsort (global_psymbols.list + pst->globals_offset, pst->n_global_syms, |
| 981 | sizeof (struct partial_symbol), compare_psymbols); |
| 982 | |
| 983 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
| 984 | (If there is a symtab, more drastic things also happen.) |
| 985 | This happens in VxWorks. */ |
| 986 | free_named_symtabs (pst->filename); |
| 987 | |
| 988 | if (num_includes == 0 |
| 989 | && number_dependencies == 0 |
| 990 | && pst->n_global_syms == 0 |
| 991 | && pst->n_static_syms == 0) { |
| 992 | /* Throw away this psymtab, it's empty. We can't deallocate it, since |
| 993 | it is on the obstack, but we can forget to chain it on the list. */ |
| 994 | ; |
| 995 | } else { |
| 996 | /* Put the psymtab on the psymtab list */ |
| 997 | pst->next = partial_symtab_list; |
| 998 | partial_symtab_list = pst; |
| 999 | } |
| 1000 | } |
| 1001 | \f |
| 1002 | static void |
| 1003 | psymtab_to_symtab_1 (pst, stringtab, stringtab_size, sym_offset) |
| 1004 | struct partial_symtab *pst; |
| 1005 | char *stringtab; |
| 1006 | int stringtab_size; |
| 1007 | int sym_offset; |
| 1008 | { |
| 1009 | struct cleanup *old_chain; |
| 1010 | int i; |
| 1011 | |
| 1012 | if (!pst) |
| 1013 | return; |
| 1014 | |
| 1015 | if (pst->readin) |
| 1016 | { |
| 1017 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
| 1018 | pst->filename); |
| 1019 | return; |
| 1020 | } |
| 1021 | |
| 1022 | /* Read in all partial symtabs on which this one is dependent */ |
| 1023 | for (i = 0; i < pst->number_of_dependencies; i++) |
| 1024 | if (!pst->dependencies[i]->readin) |
| 1025 | { |
| 1026 | /* Inform about additional files that need to be read in. */ |
| 1027 | if (info_verbose) |
| 1028 | { |
| 1029 | fputs_filtered (" ", stdout); |
| 1030 | wrap_here (""); |
| 1031 | fputs_filtered ("and ", stdout); |
| 1032 | wrap_here (""); |
| 1033 | printf_filtered ("%s...", pst->dependencies[i]->filename); |
| 1034 | wrap_here (""); /* Flush output */ |
| 1035 | fflush (stdout); |
| 1036 | } |
| 1037 | psymtab_to_symtab_1 (pst->dependencies[i], |
| 1038 | stringtab, stringtab_size, sym_offset); |
| 1039 | } |
| 1040 | |
| 1041 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
| 1042 | { |
| 1043 | /* Init stuff necessary for reading in symbols */ |
| 1044 | buildsym_init (); |
| 1045 | old_chain = make_cleanup (really_free_pendings, 0); |
| 1046 | |
| 1047 | /* Read in this files symbols */ |
| 1048 | bfd_seek (pst->objfile->obfd, sym_offset, L_SET); |
| 1049 | pst->symtab = |
| 1050 | read_ofile_symtab (pst->objfile, stringtab, stringtab_size, |
| 1051 | LDSYMOFF(pst), |
| 1052 | LDSYMLEN(pst), pst->textlow, |
| 1053 | pst->texthigh - pst->textlow, pst->addr); |
| 1054 | sort_symtab_syms (pst->symtab); |
| 1055 | |
| 1056 | do_cleanups (old_chain); |
| 1057 | } |
| 1058 | |
| 1059 | pst->readin = 1; |
| 1060 | } |
| 1061 | |
| 1062 | /* |
| 1063 | * Read in all of the symbols for a given psymtab for real. |
| 1064 | * Be verbose about it if the user wants that. |
| 1065 | */ |
| 1066 | static void |
| 1067 | dbx_psymtab_to_symtab (pst) |
| 1068 | struct partial_symtab *pst; |
| 1069 | { |
| 1070 | char *stringtab; |
| 1071 | int stsize, val; |
| 1072 | bfd *sym_bfd; |
| 1073 | long st_temp; |
| 1074 | |
| 1075 | if (!pst) |
| 1076 | return; |
| 1077 | |
| 1078 | if (pst->readin) |
| 1079 | { |
| 1080 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
| 1081 | pst->filename); |
| 1082 | return; |
| 1083 | } |
| 1084 | |
| 1085 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
| 1086 | { |
| 1087 | /* Print the message now, before reading the string table, |
| 1088 | to avoid disconcerting pauses. */ |
| 1089 | if (info_verbose) |
| 1090 | { |
| 1091 | printf_filtered ("Reading in symbols for %s...", pst->filename); |
| 1092 | fflush (stdout); |
| 1093 | } |
| 1094 | |
| 1095 | sym_bfd = pst->objfile->obfd; |
| 1096 | |
| 1097 | /* We keep the string table for the main symfile resident in memory, but |
| 1098 | not the string table for any other symbol files. */ |
| 1099 | if (symfile_objfile != pst->objfile) |
| 1100 | { |
| 1101 | /* Read in the string table */ |
| 1102 | |
| 1103 | /* FIXME, this uses internal BFD variables. See above in |
| 1104 | dbx_symbol_file_open where the macro is defined! */ |
| 1105 | bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
| 1106 | |
| 1107 | val = bfd_read (&st_temp, sizeof st_temp, 1, sym_bfd); |
| 1108 | if (val < 0) |
| 1109 | perror_with_name (pst->objfile->name); |
| 1110 | stsize = bfd_h_get_32 (sym_bfd, (unsigned char *)&st_temp); |
| 1111 | #if 0 |
| 1112 | /* BFD doesn't provide a way to know the total file size, sigh */ |
| 1113 | struct stat statbuf; |
| 1114 | if (fstat (desc, &statbuf) < 0) |
| 1115 | perror_with_name (pst->objfile->name); |
| 1116 | |
| 1117 | if (stsize >= 0 && stsize < statbuf.st_size) |
| 1118 | #else |
| 1119 | if (stsize >= 0) |
| 1120 | #endif |
| 1121 | { |
| 1122 | #ifdef BROKEN_LARGE_ALLOCA |
| 1123 | stringtab = (char *) xmalloc (stsize); |
| 1124 | make_cleanup (free, stringtab); |
| 1125 | #else |
| 1126 | stringtab = (char *) alloca (stsize); |
| 1127 | #endif |
| 1128 | } |
| 1129 | else |
| 1130 | stringtab = NULL; |
| 1131 | if (stringtab == NULL && stsize != 0) |
| 1132 | error ("ridiculous string table size: %d bytes", stsize); |
| 1133 | |
| 1134 | /* FIXME, this uses internal BFD variables. See above in |
| 1135 | dbx_symbol_file_open where the macro is defined! */ |
| 1136 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
| 1137 | if (val < 0) |
| 1138 | perror_with_name (pst->objfile->name); |
| 1139 | val = bfd_read (stringtab, stsize, 1, sym_bfd); |
| 1140 | if (val < 0) |
| 1141 | perror_with_name (pst->objfile->name); |
| 1142 | } |
| 1143 | else |
| 1144 | { |
| 1145 | stringtab = symfile_string_table; |
| 1146 | stsize = symfile_string_table_size; |
| 1147 | } |
| 1148 | |
| 1149 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 1150 | symbol_size = obj_symbol_entry_size (sym_bfd); |
| 1151 | |
| 1152 | /* FIXME, this uses internal BFD variables. See above in |
| 1153 | dbx_symbol_file_open where the macro is defined! */ |
| 1154 | psymtab_to_symtab_1 (pst, stringtab, stsize, |
| 1155 | SYMBOL_TABLE_OFFSET); |
| 1156 | |
| 1157 | /* Match with global symbols. This only needs to be done once, |
| 1158 | after all of the symtabs and dependencies have been read in. */ |
| 1159 | scan_file_globals (); |
| 1160 | |
| 1161 | /* Finish up the debug error message. */ |
| 1162 | if (info_verbose) |
| 1163 | printf_filtered ("done.\n"); |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | /* |
| 1168 | * Read in a defined section of a specific object file's symbols. |
| 1169 | * |
| 1170 | * DESC is the file descriptor for the file, positioned at the |
| 1171 | * beginning of the symtab |
| 1172 | * STRINGTAB is a pointer to the files string |
| 1173 | * table, already read in |
| 1174 | * SYM_OFFSET is the offset within the file of |
| 1175 | * the beginning of the symbols we want to read, NUM_SUMBOLS is the |
| 1176 | * number of symbols to read |
| 1177 | * TEXT_OFFSET is the beginning of the text segment we are reading symbols for |
| 1178 | * TEXT_SIZE is the size of the text segment read in. |
| 1179 | * OFFSET is a relocation offset which gets added to each symbol |
| 1180 | */ |
| 1181 | |
| 1182 | static struct symtab * |
| 1183 | read_ofile_symtab (objfile, stringtab, stringtab_size, sym_offset, |
| 1184 | sym_size, text_offset, text_size, offset) |
| 1185 | struct objfile *objfile; |
| 1186 | register char *stringtab; |
| 1187 | unsigned int stringtab_size; |
| 1188 | int sym_offset; |
| 1189 | int sym_size; |
| 1190 | CORE_ADDR text_offset; |
| 1191 | int text_size; |
| 1192 | int offset; |
| 1193 | { |
| 1194 | register char *namestring; |
| 1195 | register struct internal_nlist *bufp; |
| 1196 | unsigned char type; |
| 1197 | unsigned max_symnum; |
| 1198 | register bfd *abfd; |
| 1199 | |
| 1200 | subfile_stack = 0; |
| 1201 | |
| 1202 | stringtab_global = stringtab; |
| 1203 | last_source_file = 0; |
| 1204 | |
| 1205 | abfd = objfile->obfd; |
| 1206 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ |
| 1207 | our_objfile = objfile; /* For end_symtab calls in process_one_symbol */ |
| 1208 | symbuf_end = symbuf_idx = 0; |
| 1209 | |
| 1210 | /* It is necessary to actually read one symbol *before* the start |
| 1211 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL |
| 1212 | occurs before the N_SO symbol. |
| 1213 | |
| 1214 | Detecting this in read_dbx_symtab |
| 1215 | would slow down initial readin, so we look for it here instead. */ |
| 1216 | if (sym_offset >= (int)symbol_size) |
| 1217 | { |
| 1218 | bfd_seek (symfile_bfd, sym_offset - symbol_size, L_INCR); |
| 1219 | fill_symbuf (abfd); |
| 1220 | bufp = &symbuf[symbuf_idx++]; |
| 1221 | SWAP_SYMBOL (bufp, abfd); |
| 1222 | |
| 1223 | SET_NAMESTRING (); |
| 1224 | |
| 1225 | processing_gcc_compilation = |
| 1226 | (bufp->n_type == N_TEXT |
| 1227 | && !strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL)); |
| 1228 | /* FIXME!!! Check for gcc2_compiled... */ |
| 1229 | } |
| 1230 | else |
| 1231 | { |
| 1232 | /* The N_SO starting this symtab is the first symbol, so we |
| 1233 | better not check the symbol before it. I'm not this can |
| 1234 | happen, but it doesn't hurt to check for it. */ |
| 1235 | bfd_seek (symfile_bfd, sym_offset, L_INCR); |
| 1236 | processing_gcc_compilation = 0; |
| 1237 | } |
| 1238 | |
| 1239 | if (symbuf_idx == symbuf_end) |
| 1240 | fill_symbuf (abfd); |
| 1241 | bufp = &symbuf[symbuf_idx]; |
| 1242 | if (bufp->n_type != (unsigned char)N_SO) |
| 1243 | error("First symbol in segment of executable not a source symbol"); |
| 1244 | |
| 1245 | max_symnum = sym_size / symbol_size; |
| 1246 | |
| 1247 | for (symnum = 0; |
| 1248 | symnum < max_symnum; |
| 1249 | symnum++) |
| 1250 | { |
| 1251 | QUIT; /* Allow this to be interruptable */ |
| 1252 | if (symbuf_idx == symbuf_end) |
| 1253 | fill_symbuf(abfd); |
| 1254 | bufp = &symbuf[symbuf_idx++]; |
| 1255 | SWAP_SYMBOL (bufp, abfd); |
| 1256 | |
| 1257 | type = bufp->n_type; |
| 1258 | if (type == (unsigned char)N_CATCH) |
| 1259 | { |
| 1260 | /* N_CATCH is not fixed up by the linker, and unfortunately, |
| 1261 | there's no other place to put it in the .stab map. */ |
| 1262 | bufp->n_value += text_offset + offset; |
| 1263 | } |
| 1264 | else { |
| 1265 | type &= ~N_EXT; /* Ignore external-bit */ |
| 1266 | if (type == N_TEXT || type == N_DATA || type == N_BSS) |
| 1267 | bufp->n_value += offset; |
| 1268 | type = bufp->n_type; |
| 1269 | } |
| 1270 | |
| 1271 | SET_NAMESTRING (); |
| 1272 | |
| 1273 | if (type & N_STAB) { |
| 1274 | process_one_symbol (type, bufp->n_desc, bufp->n_value, namestring); |
| 1275 | /* our_objfile is an implicit parameter. */ |
| 1276 | |
| 1277 | } |
| 1278 | /* We skip checking for a new .o or -l file; that should never |
| 1279 | happen in this routine. */ |
| 1280 | else if (type == N_TEXT |
| 1281 | && !strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
| 1282 | /* I don't think this code will ever be executed, because |
| 1283 | the GCC_COMPILED_FLAG_SYMBOL usually is right before |
| 1284 | the N_SO symbol which starts this source file. |
| 1285 | However, there is no reason not to accept |
| 1286 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ |
| 1287 | processing_gcc_compilation = 1; |
| 1288 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
| 1289 | || type == (unsigned char)N_NBTEXT |
| 1290 | ) { |
| 1291 | /* Global symbol: see if we came across a dbx defintion for |
| 1292 | a corresponding symbol. If so, store the value. Remove |
| 1293 | syms from the chain when their values are stored, but |
| 1294 | search the whole chain, as there may be several syms from |
| 1295 | different files with the same name. */ |
| 1296 | /* This is probably not true. Since the files will be read |
| 1297 | in one at a time, each reference to a global symbol will |
| 1298 | be satisfied in each file as it appears. So we skip this |
| 1299 | section. */ |
| 1300 | ; |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | return end_symtab (text_offset + text_size, 0, 0, objfile); |
| 1305 | } |
| 1306 | \f |
| 1307 | int |
| 1308 | hashname (name) |
| 1309 | char *name; |
| 1310 | { |
| 1311 | register char *p = name; |
| 1312 | register int total = p[0]; |
| 1313 | register int c; |
| 1314 | |
| 1315 | c = p[1]; |
| 1316 | total += c << 2; |
| 1317 | if (c) |
| 1318 | { |
| 1319 | c = p[2]; |
| 1320 | total += c << 4; |
| 1321 | if (c) |
| 1322 | total += p[3] << 6; |
| 1323 | } |
| 1324 | |
| 1325 | /* Ensure result is positive. */ |
| 1326 | if (total < 0) total += (1000 << 6); |
| 1327 | return total % HASHSIZE; |
| 1328 | } |
| 1329 | |
| 1330 | \f |
| 1331 | void |
| 1332 | process_one_symbol (type, desc, valu, name) |
| 1333 | int type, desc; |
| 1334 | CORE_ADDR valu; |
| 1335 | char *name; |
| 1336 | { |
| 1337 | #ifndef SUN_FIXED_LBRAC_BUG |
| 1338 | /* This records the last pc address we've seen. We depend on their being |
| 1339 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
| 1340 | not get reset in between reads of different symbol files. */ |
| 1341 | static CORE_ADDR last_pc_address; |
| 1342 | #endif |
| 1343 | register struct context_stack *new; |
| 1344 | char *colon_pos; |
| 1345 | |
| 1346 | /* Something is wrong if we see real data before |
| 1347 | seeing a source file name. */ |
| 1348 | |
| 1349 | if (last_source_file == 0 && type != (unsigned char)N_SO) |
| 1350 | { |
| 1351 | /* Currently this ignores N_ENTRY on Gould machines, N_NSYM on machines |
| 1352 | where that code is defined. */ |
| 1353 | if (IGNORE_SYMBOL (type)) |
| 1354 | return; |
| 1355 | |
| 1356 | /* FIXME, this should not be an error, since it precludes extending |
| 1357 | the symbol table information in this way... */ |
| 1358 | error ("Invalid symbol data: does not start by identifying a source file."); |
| 1359 | } |
| 1360 | |
| 1361 | switch (type) |
| 1362 | { |
| 1363 | case N_FUN: |
| 1364 | case N_FNAME: |
| 1365 | /* Either of these types of symbols indicates the start of |
| 1366 | a new function. We must process its "name" normally for dbx, |
| 1367 | but also record the start of a new lexical context, and possibly |
| 1368 | also the end of the lexical context for the previous function. */ |
| 1369 | /* This is not always true. This type of symbol may indicate a |
| 1370 | text segment variable. */ |
| 1371 | |
| 1372 | #ifndef SUN_FIXED_LBRAC_BUG |
| 1373 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
| 1374 | #endif |
| 1375 | |
| 1376 | colon_pos = strchr (name, ':'); |
| 1377 | if (!colon_pos++ |
| 1378 | || (*colon_pos != 'f' && *colon_pos != 'F')) |
| 1379 | { |
| 1380 | define_symbol (valu, name, desc, type); |
| 1381 | break; |
| 1382 | } |
| 1383 | |
| 1384 | within_function = 1; |
| 1385 | if (context_stack_depth > 0) |
| 1386 | { |
| 1387 | new = pop_context (); |
| 1388 | /* Make a block for the local symbols within. */ |
| 1389 | finish_block (new->name, &local_symbols, new->old_blocks, |
| 1390 | new->start_addr, valu); |
| 1391 | } |
| 1392 | /* Stack must be empty now. */ |
| 1393 | if (context_stack_depth != 0) |
| 1394 | complain (lbrac_unmatched_complaint, symnum); |
| 1395 | |
| 1396 | new = push_context (0, valu); |
| 1397 | new->name = define_symbol (valu, name, desc, type); |
| 1398 | break; |
| 1399 | |
| 1400 | case N_CATCH: |
| 1401 | /* Record the address at which this catch takes place. */ |
| 1402 | define_symbol (valu, name, desc, type); |
| 1403 | break; |
| 1404 | |
| 1405 | case N_EHDECL: |
| 1406 | /* Don't know what to do with these yet. */ |
| 1407 | error ("action uncertain for eh extensions"); |
| 1408 | break; |
| 1409 | |
| 1410 | case N_LBRAC: |
| 1411 | /* This "symbol" just indicates the start of an inner lexical |
| 1412 | context within a function. */ |
| 1413 | |
| 1414 | #if !defined (BLOCK_ADDRESS_ABSOLUTE) |
| 1415 | /* On most machines, the block addresses are relative to the |
| 1416 | N_SO, the linker did not relocate them (sigh). */ |
| 1417 | valu += last_source_start_addr; |
| 1418 | #endif |
| 1419 | |
| 1420 | #ifndef SUN_FIXED_LBRAC_BUG |
| 1421 | if (valu < last_pc_address) { |
| 1422 | /* Patch current LBRAC pc value to match last handy pc value */ |
| 1423 | complain (&lbrac_complaint, 0); |
| 1424 | valu = last_pc_address; |
| 1425 | } |
| 1426 | #endif |
| 1427 | new = push_context (desc, valu); |
| 1428 | break; |
| 1429 | |
| 1430 | case N_RBRAC: |
| 1431 | /* This "symbol" just indicates the end of an inner lexical |
| 1432 | context that was started with N_LBRAC. */ |
| 1433 | |
| 1434 | #if !defined (BLOCK_ADDRESS_ABSOLUTE) |
| 1435 | /* On most machines, the block addresses are relative to the |
| 1436 | N_SO, the linker did not relocate them (sigh). */ |
| 1437 | valu += last_source_start_addr; |
| 1438 | #endif |
| 1439 | |
| 1440 | new = pop_context(); |
| 1441 | if (desc != new->depth) |
| 1442 | complain (lbrac_mismatch_complaint, symnum); |
| 1443 | |
| 1444 | /* Some compilers put the variable decls inside of an |
| 1445 | LBRAC/RBRAC block. This macro should be nonzero if this |
| 1446 | is true. DESC is N_DESC from the N_RBRAC symbol. |
| 1447 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL. */ |
| 1448 | #if !defined (VARIABLES_INSIDE_BLOCK) |
| 1449 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 |
| 1450 | #endif |
| 1451 | |
| 1452 | /* Can only use new->locals as local symbols here if we're in |
| 1453 | gcc or on a machine that puts them before the lbrack. */ |
| 1454 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
| 1455 | local_symbols = new->locals; |
| 1456 | |
| 1457 | /* If this is not the outermost LBRAC...RBRAC pair in the |
| 1458 | function, its local symbols preceded it, and are the ones |
| 1459 | just recovered from the context stack. Defined the block for them. |
| 1460 | |
| 1461 | If this is the outermost LBRAC...RBRAC pair, there is no |
| 1462 | need to do anything; leave the symbols that preceded it |
| 1463 | to be attached to the function's own block. However, if |
| 1464 | it is so, we need to indicate that we just moved outside |
| 1465 | of the function. */ |
| 1466 | if (local_symbols |
| 1467 | && (context_stack_depth |
| 1468 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))) |
| 1469 | { |
| 1470 | /* FIXME Muzzle a compiler bug that makes end < start. */ |
| 1471 | if (new->start_addr > valu) |
| 1472 | { |
| 1473 | complain(&lbrac_rbrac_complaint, 0); |
| 1474 | new->start_addr = valu; |
| 1475 | } |
| 1476 | /* Make a block for the local symbols within. */ |
| 1477 | finish_block (0, &local_symbols, new->old_blocks, |
| 1478 | new->start_addr, valu); |
| 1479 | } |
| 1480 | else |
| 1481 | { |
| 1482 | within_function = 0; |
| 1483 | } |
| 1484 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
| 1485 | /* Now pop locals of block just finished. */ |
| 1486 | local_symbols = new->locals; |
| 1487 | break; |
| 1488 | |
| 1489 | case N_FN: |
| 1490 | case N_FN_SEQ: |
| 1491 | /* This kind of symbol indicates the start of an object file. */ |
| 1492 | break; |
| 1493 | |
| 1494 | case N_SO: |
| 1495 | /* This type of symbol indicates the start of data |
| 1496 | for one source file. |
| 1497 | Finish the symbol table of the previous source file |
| 1498 | (if any) and start accumulating a new symbol table. */ |
| 1499 | #ifndef SUN_FIXED_LBRAC_BUG |
| 1500 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
| 1501 | #endif |
| 1502 | |
| 1503 | #ifdef PCC_SOL_BROKEN |
| 1504 | /* pcc bug, occasionally puts out SO for SOL. */ |
| 1505 | if (context_stack_depth > 0) |
| 1506 | { |
| 1507 | start_subfile (name, NULL); |
| 1508 | break; |
| 1509 | } |
| 1510 | #endif |
| 1511 | if (last_source_file) |
| 1512 | { |
| 1513 | /* Check if previous symbol was also an N_SO (with some |
| 1514 | sanity checks). If so, that one was actually the directory |
| 1515 | name, and the current one is the real file name. |
| 1516 | Patch things up. */ |
| 1517 | if (previous_stab_code == N_SO |
| 1518 | && current_subfile && current_subfile->dirname == NULL |
| 1519 | && current_subfile->name != NULL |
| 1520 | && current_subfile->name[strlen(current_subfile->name)-1] == '/') |
| 1521 | { |
| 1522 | current_subfile->dirname = current_subfile->name; |
| 1523 | current_subfile->name = obsavestring (name, strlen (name)); |
| 1524 | break; |
| 1525 | } |
| 1526 | (void)end_symtab (valu, 0, 0); |
| 1527 | } |
| 1528 | start_symtab (name, NULL, valu); |
| 1529 | break; |
| 1530 | |
| 1531 | case N_SOL: |
| 1532 | /* This type of symbol indicates the start of data for |
| 1533 | a sub-source-file, one whose contents were copied or |
| 1534 | included in the compilation of the main source file |
| 1535 | (whose name was given in the N_SO symbol.) */ |
| 1536 | start_subfile (name, NULL); |
| 1537 | break; |
| 1538 | |
| 1539 | case N_BINCL: |
| 1540 | push_subfile (); |
| 1541 | add_new_header_file (name, valu); |
| 1542 | start_subfile (name, NULL); |
| 1543 | break; |
| 1544 | |
| 1545 | case N_EINCL: |
| 1546 | start_subfile (pop_subfile (), NULL); |
| 1547 | break; |
| 1548 | |
| 1549 | case N_EXCL: |
| 1550 | add_old_header_file (name, valu); |
| 1551 | break; |
| 1552 | |
| 1553 | case N_SLINE: |
| 1554 | /* This type of "symbol" really just records |
| 1555 | one line-number -- core-address correspondence. |
| 1556 | Enter it in the line list for this symbol table. */ |
| 1557 | #ifndef SUN_FIXED_LBRAC_BUG |
| 1558 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
| 1559 | #endif |
| 1560 | record_line (current_subfile, desc, valu); |
| 1561 | break; |
| 1562 | |
| 1563 | case N_BCOMM: |
| 1564 | if (common_block) |
| 1565 | error ("Invalid symbol data: common within common at symtab pos %d", |
| 1566 | symnum); |
| 1567 | common_block = local_symbols; |
| 1568 | common_block_i = local_symbols ? local_symbols->nsyms : 0; |
| 1569 | break; |
| 1570 | |
| 1571 | case N_ECOMM: |
| 1572 | /* Symbols declared since the BCOMM are to have the common block |
| 1573 | start address added in when we know it. common_block points to |
| 1574 | the first symbol after the BCOMM in the local_symbols list; |
| 1575 | copy the list and hang it off the symbol for the common block name |
| 1576 | for later fixup. */ |
| 1577 | { |
| 1578 | int i; |
| 1579 | struct symbol *sym = |
| 1580 | (struct symbol *) xmalloc (sizeof (struct symbol)); |
| 1581 | bzero (sym, sizeof *sym); |
| 1582 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); |
| 1583 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
| 1584 | SYMBOL_NAMESPACE (sym) = (enum namespace)((long) |
| 1585 | copy_pending (local_symbols, common_block_i, common_block)); |
| 1586 | i = hashname (SYMBOL_NAME (sym)); |
| 1587 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
| 1588 | global_sym_chain[i] = sym; |
| 1589 | common_block = 0; |
| 1590 | break; |
| 1591 | } |
| 1592 | |
| 1593 | case N_ECOML: |
| 1594 | case N_LENG: |
| 1595 | case N_DEFD: /* GNU Modula-2 symbol */ |
| 1596 | break; |
| 1597 | |
| 1598 | default: |
| 1599 | if (name) |
| 1600 | define_symbol (valu, name, desc, type); |
| 1601 | } |
| 1602 | |
| 1603 | previous_stab_code = type; |
| 1604 | } |
| 1605 | \f |
| 1606 | /* Copy a pending list, used to record the contents of a common |
| 1607 | block for later fixup. */ |
| 1608 | static struct pending * |
| 1609 | copy_pending (beg, begi, end) |
| 1610 | struct pending *beg, *end; |
| 1611 | int begi; |
| 1612 | { |
| 1613 | struct pending *new = 0; |
| 1614 | struct pending *next; |
| 1615 | |
| 1616 | for (next = beg; next != 0 && (next != end || begi < end->nsyms); |
| 1617 | next = next->next, begi = 0) |
| 1618 | { |
| 1619 | register int j; |
| 1620 | for (j = begi; j < next->nsyms; j++) |
| 1621 | add_symbol_to_list (next->symbol[j], &new); |
| 1622 | } |
| 1623 | return new; |
| 1624 | } |
| 1625 | \f |
| 1626 | /* Register our willingness to decode symbols for SunOS and a.out and |
| 1627 | b.out files handled by BFD... */ |
| 1628 | static struct sym_fns sunos_sym_fns = {"sunOs", 6, |
| 1629 | dbx_new_init, dbx_symfile_init, dbx_symfile_read}; |
| 1630 | |
| 1631 | static struct sym_fns aout_sym_fns = {"a.out", 5, |
| 1632 | dbx_new_init, dbx_symfile_init, dbx_symfile_read}; |
| 1633 | |
| 1634 | static struct sym_fns bout_sym_fns = {"b.out", 5, |
| 1635 | dbx_new_init, dbx_symfile_init, dbx_symfile_read}; |
| 1636 | |
| 1637 | void |
| 1638 | _initialize_dbxread () |
| 1639 | { |
| 1640 | add_symtab_fns(&sunos_sym_fns); |
| 1641 | add_symtab_fns(&aout_sym_fns); |
| 1642 | add_symtab_fns(&bout_sym_fns); |
| 1643 | } |