1/* Read HP PA/Risc object files for GDB. 2 Copyright 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 3 2004 Free Software Foundation, Inc. 4 Written by Fred Fish at Cygnus Support. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, 21 Boston, MA 02111-1307, USA. */ 22 23#include "defs.h" 24#include "bfd.h" 25#include <syms.h> 26#include "symtab.h" 27#include "symfile.h" 28#include "objfiles.h" 29#include "buildsym.h" 30#include "stabsread.h" 31#include "gdb-stabs.h" 32#include "complaints.h" 33#include "gdb_string.h" 34#include "demangle.h" 35#include "som.h" 36#include "libhppa.h" 37 38/* Various things we might complain about... */ 39 40static int init_import_symbols (struct objfile *objfile); 41 42static void som_symfile_init (struct objfile *); 43 44static void som_new_init (struct objfile *); 45 46static void som_symfile_read (struct objfile *, int); 47 48static void som_symfile_finish (struct objfile *); 49 50static void som_symtab_read (bfd *, struct objfile *, 51 struct section_offsets *); 52 53static void som_symfile_offsets (struct objfile *, struct section_addr_info *); 54 55/* FIXME: These should really be in a common header somewhere */ 56 57extern void hpread_build_psymtabs (struct objfile *, int); 58 59extern void hpread_symfile_finish (struct objfile *); 60 61extern void hpread_symfile_init (struct objfile *); 62 63extern void do_pxdb (bfd *); 64 65/* 66 67 LOCAL FUNCTION 68 69 som_symtab_read -- read the symbol table of a SOM file 70 71 SYNOPSIS 72 73 void som_symtab_read (bfd *abfd, struct objfile *objfile, 74 struct section_offsets *section_offsets) 75 76 DESCRIPTION 77 78 Given an open bfd, a base address to relocate symbols to, and a 79 flag that specifies whether or not this bfd is for an executable 80 or not (may be shared library for example), add all the global 81 function and data symbols to the minimal symbol table. 82 */ 83 84static void 85som_symtab_read (bfd *abfd, struct objfile *objfile, 86 struct section_offsets *section_offsets) 87{ 88 unsigned int number_of_symbols; 89 int val, dynamic; 90 char *stringtab; 91 asection *shlib_info; 92 struct symbol_dictionary_record *buf, *bufp, *endbufp; 93 char *symname; 94 CONST int symsize = sizeof (struct symbol_dictionary_record); 95 CORE_ADDR text_offset, data_offset; 96 97 98 text_offset = ANOFFSET (section_offsets, 0); 99 data_offset = ANOFFSET (section_offsets, 1); 100 101 number_of_symbols = bfd_get_symcount (abfd); 102 103 /* FIXME (alloca): could be quite large. */ 104 buf = alloca (symsize * number_of_symbols); 105 bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET); 106 val = bfd_bread (buf, symsize * number_of_symbols, abfd); 107 if (val != symsize * number_of_symbols) 108 error ("Couldn't read symbol dictionary!"); 109 110 /* FIXME (alloca): could be quite large. */ 111 stringtab = alloca (obj_som_stringtab_size (abfd)); 112 bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET); 113 val = bfd_bread (stringtab, obj_som_stringtab_size (abfd), abfd); 114 if (val != obj_som_stringtab_size (abfd)) 115 error ("Can't read in HP string table."); 116 117 /* We need to determine if objfile is a dynamic executable (so we 118 can do the right thing for ST_ENTRY vs ST_CODE symbols). 119 120 There's nothing in the header which easily allows us to do 121 this. 122 123 This code used to rely upon the existence of a $SHLIB_INFO$ 124 section to make this determination. HP claims that it is 125 more accurate to check for a nonzero text offset, but they 126 have not provided any information about why that test is 127 more accurate. */ 128 dynamic = (text_offset != 0); 129 130 endbufp = buf + number_of_symbols; 131 for (bufp = buf; bufp < endbufp; ++bufp) 132 { 133 enum minimal_symbol_type ms_type; 134 135 QUIT; 136 137 switch (bufp->symbol_scope) 138 { 139 case SS_UNIVERSAL: 140 case SS_EXTERNAL: 141 switch (bufp->symbol_type) 142 { 143 case ST_SYM_EXT: 144 case ST_ARG_EXT: 145 continue; 146 147 case ST_CODE: 148 case ST_PRI_PROG: 149 case ST_SEC_PROG: 150 case ST_MILLICODE: 151 symname = bufp->name.n_strx + stringtab; 152 ms_type = mst_text; 153 bufp->symbol_value += text_offset; 154 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 155 break; 156 157 case ST_ENTRY: 158 symname = bufp->name.n_strx + stringtab; 159 /* For a dynamic executable, ST_ENTRY symbols are 160 the stubs, while the ST_CODE symbol is the real 161 function. */ 162 if (dynamic) 163 ms_type = mst_solib_trampoline; 164 else 165 ms_type = mst_text; 166 bufp->symbol_value += text_offset; 167 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 168 break; 169 170 case ST_STUB: 171 symname = bufp->name.n_strx + stringtab; 172 ms_type = mst_solib_trampoline; 173 bufp->symbol_value += text_offset; 174 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 175 break; 176 177 case ST_DATA: 178 symname = bufp->name.n_strx + stringtab; 179 bufp->symbol_value += data_offset; 180 ms_type = mst_data; 181 break; 182 default: 183 continue; 184 } 185 break; 186 187#if 0 188 /* SS_GLOBAL and SS_LOCAL are two names for the same thing (!). */ 189 case SS_GLOBAL: 190#endif 191 case SS_LOCAL: 192 switch (bufp->symbol_type) 193 { 194 case ST_SYM_EXT: 195 case ST_ARG_EXT: 196 continue; 197 198 case ST_CODE: 199 symname = bufp->name.n_strx + stringtab; 200 ms_type = mst_file_text; 201 bufp->symbol_value += text_offset; 202 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 203 204 check_strange_names: 205 /* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local 206 label prefixes for stabs, constant data, etc. So we need 207 only filter out L$ symbols which are left in due to 208 limitations in how GAS generates SOM relocations. 209 210 When linking in the HPUX C-library the HP linker has 211 the nasty habit of placing section symbols from the literal 212 subspaces in the middle of the program's text. Filter 213 those out as best we can. Check for first and last character 214 being '$'. 215 216 And finally, the newer HP compilers emit crud like $PIC_foo$N 217 in some circumstance (PIC code I guess). It's also claimed 218 that they emit D$ symbols too. What stupidity. */ 219 if ((symname[0] == 'L' && symname[1] == '$') 220 || (symname[0] == '$' && symname[strlen (symname) - 1] == '$') 221 || (symname[0] == 'D' && symname[1] == '$') 222 || (strncmp (symname, "L0\001", 3) == 0) 223 || (strncmp (symname, "$PIC", 4) == 0)) 224 continue; 225 break; 226 227 case ST_PRI_PROG: 228 case ST_SEC_PROG: 229 case ST_MILLICODE: 230 symname = bufp->name.n_strx + stringtab; 231 ms_type = mst_file_text; 232 bufp->symbol_value += text_offset; 233 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 234 break; 235 236 case ST_ENTRY: 237 symname = bufp->name.n_strx + stringtab; 238 /* SS_LOCAL symbols in a shared library do not have 239 export stubs, so we do not have to worry about 240 using mst_file_text vs mst_solib_trampoline here like 241 we do for SS_UNIVERSAL and SS_EXTERNAL symbols above. */ 242 ms_type = mst_file_text; 243 bufp->symbol_value += text_offset; 244 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 245 break; 246 247 case ST_STUB: 248 symname = bufp->name.n_strx + stringtab; 249 ms_type = mst_solib_trampoline; 250 bufp->symbol_value += text_offset; 251 bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value); 252 break; 253 254 255 case ST_DATA: 256 symname = bufp->name.n_strx + stringtab; 257 bufp->symbol_value += data_offset; 258 ms_type = mst_file_data; 259 goto check_strange_names; 260 261 default: 262 continue; 263 } 264 break; 265 266 /* This can happen for common symbols when -E is passed to the 267 final link. No idea _why_ that would make the linker force 268 common symbols to have an SS_UNSAT scope, but it does. 269 270 This also happens for weak symbols, but their type is 271 ST_DATA. */ 272 case SS_UNSAT: 273 switch (bufp->symbol_type) 274 { 275 case ST_STORAGE: 276 case ST_DATA: 277 symname = bufp->name.n_strx + stringtab; 278 bufp->symbol_value += data_offset; 279 ms_type = mst_data; 280 break; 281 282 default: 283 continue; 284 } 285 break; 286 287 default: 288 continue; 289 } 290 291 if (bufp->name.n_strx > obj_som_stringtab_size (abfd)) 292 error ("Invalid symbol data; bad HP string table offset: %d", 293 bufp->name.n_strx); 294 295 prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type, 296 objfile); 297 } 298} 299 300/* Scan and build partial symbols for a symbol file. 301 We have been initialized by a call to som_symfile_init, which 302 currently does nothing. 303 304 SECTION_OFFSETS is a set of offsets to apply to relocate the symbols 305 in each section. This is ignored, as it isn't needed for SOM. 306 307 MAINLINE is true if we are reading the main symbol 308 table (as opposed to a shared lib or dynamically loaded file). 309 310 This function only does the minimum work necessary for letting the 311 user "name" things symbolically; it does not read the entire symtab. 312 Instead, it reads the external and static symbols and puts them in partial 313 symbol tables. When more extensive information is requested of a 314 file, the corresponding partial symbol table is mutated into a full 315 fledged symbol table by going back and reading the symbols 316 for real. 317 318 We look for sections with specific names, to tell us what debug 319 format to look for: FIXME!!! 320 321 somstab_build_psymtabs() handles STABS symbols. 322 323 Note that SOM files have a "minimal" symbol table, which is vaguely 324 reminiscent of a COFF symbol table, but has only the minimal information 325 necessary for linking. We process this also, and use the information to 326 build gdb's minimal symbol table. This gives us some minimal debugging 327 capability even for files compiled without -g. */ 328 329static void 330som_symfile_read (struct objfile *objfile, int mainline) 331{ 332 bfd *abfd = objfile->obfd; 333 struct cleanup *back_to; 334 335 do_pxdb (symfile_bfd_open (objfile->name)); 336 337 init_minimal_symbol_collection (); 338 back_to = make_cleanup_discard_minimal_symbols (); 339 340 /* Read in the import list and the export list. Currently 341 the export list isn't used; the import list is used in 342 hp-symtab-read.c to handle static vars declared in other 343 shared libraries. */ 344 init_import_symbols (objfile); 345#if 0 /* Export symbols not used today 1997-08-05 */ 346 init_export_symbols (objfile); 347#else 348 objfile->export_list = NULL; 349 objfile->export_list_size = 0; 350#endif 351 352 /* Process the normal SOM symbol table first. 353 This reads in the DNTT and string table, but doesn't 354 actually scan the DNTT. It does scan the linker symbol 355 table and thus build up a "minimal symbol table". */ 356 357 som_symtab_read (abfd, objfile, objfile->section_offsets); 358 359 /* Install any minimal symbols that have been collected as the current 360 minimal symbols for this objfile. 361 Further symbol-reading is done incrementally, file-by-file, 362 in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c 363 contains the code to do the actual DNTT scanning and symtab building. */ 364 install_minimal_symbols (objfile); 365 do_cleanups (back_to); 366 367 /* Now read information from the stabs debug sections. 368 This is a no-op for SOM. 369 Perhaps it is intended for some kind of mixed STABS/SOM 370 situation? */ 371 stabsect_build_psymtabs (objfile, mainline, 372 "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$"); 373 374 /* Now read the native debug information. 375 This builds the psymtab. This used to be done via a scan of 376 the DNTT, but is now done via the PXDB-built quick-lookup tables 377 together with a scan of the GNTT. See hp-psymtab-read.c. */ 378 hpread_build_psymtabs (objfile, mainline); 379 380 /* Force hppa-tdep.c to re-read the unwind descriptors. */ 381 objfile->obj_private = NULL; 382} 383 384/* Initialize anything that needs initializing when a completely new symbol 385 file is specified (not just adding some symbols from another file, e.g. a 386 shared library). 387 388 We reinitialize buildsym, since we may be reading stabs from a SOM file. */ 389 390static void 391som_new_init (struct objfile *ignore) 392{ 393 stabsread_new_init (); 394 buildsym_new_init (); 395} 396 397/* Perform any local cleanups required when we are done with a particular 398 objfile. I.E, we are in the process of discarding all symbol information 399 for an objfile, freeing up all memory held for it, and unlinking the 400 objfile struct from the global list of known objfiles. */ 401 402static void 403som_symfile_finish (struct objfile *objfile) 404{ 405 if (objfile->sym_stab_info != NULL) 406 { 407 xfree (objfile->sym_stab_info); 408 } 409 hpread_symfile_finish (objfile); 410} 411 412/* SOM specific initialization routine for reading symbols. */ 413 414static void 415som_symfile_init (struct objfile *objfile) 416{ 417 /* SOM objects may be reordered, so set OBJF_REORDERED. If we 418 find this causes a significant slowdown in gdb then we could 419 set it in the debug symbol readers only when necessary. */ 420 objfile->flags |= OBJF_REORDERED; 421 hpread_symfile_init (objfile); 422} 423 424/* SOM specific parsing routine for section offsets. 425 426 Plain and simple for now. */ 427 428static void 429som_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs) 430{ 431 int i; 432 CORE_ADDR text_addr; 433 434 objfile->num_sections = bfd_count_sections (objfile->obfd); 435 objfile->section_offsets = (struct section_offsets *) 436 obstack_alloc (&objfile->objfile_obstack, 437 SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); 438 439 /* FIXME: ezannoni 2000-04-20 The section names in SOM are not 440 .text, .data, etc, but $TEXT$, $DATA$,... We should initialize 441 SET_OFF_* from bfd. (See default_symfile_offsets()). But I don't 442 know the correspondence between SOM sections and GDB's idea of 443 section names. So for now we default to what is was before these 444 changes.*/ 445 objfile->sect_index_text = 0; 446 objfile->sect_index_data = 1; 447 objfile->sect_index_bss = 2; 448 objfile->sect_index_rodata = 3; 449 450 /* First see if we're a shared library. If so, get the section 451 offsets from the library, else get them from addrs. */ 452 if (!som_solib_section_offsets (objfile, objfile->section_offsets)) 453 { 454 /* Note: Here is OK to compare with ".text" because this is the 455 name that gdb itself gives to that section, not the SOM 456 name. */ 457 for (i = 0; i < objfile->num_sections && addrs->other[i].name; i++) 458 if (strcmp (addrs->other[i].name, ".text") == 0) 459 break; 460 text_addr = addrs->other[i].addr; 461 462 for (i = 0; i < objfile->num_sections; i++) 463 (objfile->section_offsets)->offsets[i] = text_addr; 464 } 465} 466 467/* Read in and initialize the SOM import list which is present 468 for all executables and shared libraries. The import list 469 consists of the symbols that are referenced in OBJFILE but 470 not defined there. (Variables that are imported are dealt 471 with as "loc_indirect" vars.) 472 Return value = number of import symbols read in. */ 473static int 474init_import_symbols (struct objfile *objfile) 475{ 476 unsigned int import_list; 477 unsigned int import_list_size; 478 unsigned int string_table; 479 unsigned int string_table_size; 480 char *string_buffer; 481 int i; 482 int j; 483 int k; 484 asection *text_section; /* section handle */ 485 unsigned int dl_header[12]; /* SOM executable header */ 486 487 /* A struct for an entry in the SOM import list */ 488 typedef struct 489 { 490 int name; /* index into the string table */ 491 short dont_care1; /* we don't use this */ 492 unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */ 493 unsigned int reserved2:8; /* not used */ 494 } 495 SomImportEntry; 496 497 /* We read 100 entries in at a time from the disk file. */ 498#define SOM_READ_IMPORTS_NUM 100 499#define SOM_READ_IMPORTS_CHUNK_SIZE (sizeof (SomImportEntry) * SOM_READ_IMPORTS_NUM) 500 SomImportEntry buffer[SOM_READ_IMPORTS_NUM]; 501 502 /* Initialize in case we error out */ 503 objfile->import_list = NULL; 504 objfile->import_list_size = 0; 505 506 /* It doesn't work, for some reason, to read in space $TEXT$; 507 the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */ 508 text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$"); 509 if (!text_section) 510 return 0; 511 /* Get the SOM executable header */ 512 bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int)); 513 514 /* Check header version number for 10.x HP-UX */ 515 /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912. 516 FIXME: Change for future HP-UX releases and mods to the SOM executable format */ 517 if (dl_header[0] != 93092112) 518 return 0; 519 520 import_list = dl_header[4]; 521 import_list_size = dl_header[5]; 522 if (!import_list_size) 523 return 0; 524 string_table = dl_header[10]; 525 string_table_size = dl_header[11]; 526 if (!string_table_size) 527 return 0; 528 529 /* Suck in SOM string table */ 530 string_buffer = (char *) xmalloc (string_table_size); 531 bfd_get_section_contents (objfile->obfd, text_section, string_buffer, 532 string_table, string_table_size); 533 534 /* Allocate import list in the psymbol obstack; this has nothing 535 to do with psymbols, just a matter of convenience. We want the 536 import list to be freed when the objfile is deallocated */ 537 objfile->import_list 538 = (ImportEntry *) obstack_alloc (&objfile->objfile_obstack, 539 import_list_size * sizeof (ImportEntry)); 540 541 /* Read in the import entries, a bunch at a time */ 542 for (j = 0, k = 0; 543 j < (import_list_size / SOM_READ_IMPORTS_NUM); 544 j++) 545 { 546 bfd_get_section_contents (objfile->obfd, text_section, buffer, 547 import_list + j * SOM_READ_IMPORTS_CHUNK_SIZE, 548 SOM_READ_IMPORTS_CHUNK_SIZE); 549 for (i = 0; i < SOM_READ_IMPORTS_NUM; i++, k++) 550 { 551 if (buffer[i].type != (unsigned char) 0) 552 { 553 objfile->import_list[k] 554 = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1); 555 strcpy (objfile->import_list[k], string_buffer + buffer[i].name); 556 /* Some day we might want to record the type and other information too */ 557 } 558 else /* null type */ 559 objfile->import_list[k] = NULL; 560 561 } 562 } 563 564 /* Get the leftovers */ 565 if (k < import_list_size) 566 bfd_get_section_contents (objfile->obfd, text_section, buffer, 567 import_list + k * sizeof (SomImportEntry), 568 (import_list_size - k) * sizeof (SomImportEntry)); 569 for (i = 0; k < import_list_size; i++, k++) 570 { 571 if (buffer[i].type != (unsigned char) 0) 572 { 573 objfile->import_list[k] 574 = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1); 575 strcpy (objfile->import_list[k], string_buffer + buffer[i].name); 576 /* Some day we might want to record the type and other information too */ 577 } 578 else 579 objfile->import_list[k] = NULL; 580 } 581 582 objfile->import_list_size = import_list_size; 583 xfree (string_buffer); 584 return import_list_size; 585} 586 587/* Read in and initialize the SOM export list which is present 588 for all executables and shared libraries. The import list 589 consists of the symbols that are referenced in OBJFILE but 590 not defined there. (Variables that are imported are dealt 591 with as "loc_indirect" vars.) 592 Return value = number of import symbols read in. */ 593int 594init_export_symbols (struct objfile *objfile) 595{ 596 unsigned int export_list; 597 unsigned int export_list_size; 598 unsigned int string_table; 599 unsigned int string_table_size; 600 char *string_buffer; 601 int i; 602 int j; 603 int k; 604 asection *text_section; /* section handle */ 605 unsigned int dl_header[12]; /* SOM executable header */ 606 607 /* A struct for an entry in the SOM export list */ 608 typedef struct 609 { 610 int next; /* for hash table use -- we don't use this */ 611 int name; /* index into string table */ 612 int value; /* offset or plabel */ 613 int dont_care1; /* not used */ 614 unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */ 615 char dont_care2; /* not used */ 616 short dont_care3; /* not used */ 617 } 618 SomExportEntry; 619 620 /* We read 100 entries in at a time from the disk file. */ 621#define SOM_READ_EXPORTS_NUM 100 622#define SOM_READ_EXPORTS_CHUNK_SIZE (sizeof (SomExportEntry) * SOM_READ_EXPORTS_NUM) 623 SomExportEntry buffer[SOM_READ_EXPORTS_NUM]; 624 625 /* Initialize in case we error out */ 626 objfile->export_list = NULL; 627 objfile->export_list_size = 0; 628 629 /* It doesn't work, for some reason, to read in space $TEXT$; 630 the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */ 631 text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$"); 632 if (!text_section) 633 return 0; 634 /* Get the SOM executable header */ 635 bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int)); 636 637 /* Check header version number for 10.x HP-UX */ 638 /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912. 639 FIXME: Change for future HP-UX releases and mods to the SOM executable format */ 640 if (dl_header[0] != 93092112) 641 return 0; 642 643 export_list = dl_header[8]; 644 export_list_size = dl_header[9]; 645 if (!export_list_size) 646 return 0; 647 string_table = dl_header[10]; 648 string_table_size = dl_header[11]; 649 if (!string_table_size) 650 return 0; 651 652 /* Suck in SOM string table */ 653 string_buffer = (char *) xmalloc (string_table_size); 654 bfd_get_section_contents (objfile->obfd, text_section, string_buffer, 655 string_table, string_table_size); 656 657 /* Allocate export list in the psymbol obstack; this has nothing 658 to do with psymbols, just a matter of convenience. We want the 659 export list to be freed when the objfile is deallocated */ 660 objfile->export_list 661 = (ExportEntry *) obstack_alloc (&objfile->objfile_obstack, 662 export_list_size * sizeof (ExportEntry)); 663 664 /* Read in the export entries, a bunch at a time */ 665 for (j = 0, k = 0; 666 j < (export_list_size / SOM_READ_EXPORTS_NUM); 667 j++) 668 { 669 bfd_get_section_contents (objfile->obfd, text_section, buffer, 670 export_list + j * SOM_READ_EXPORTS_CHUNK_SIZE, 671 SOM_READ_EXPORTS_CHUNK_SIZE); 672 for (i = 0; i < SOM_READ_EXPORTS_NUM; i++, k++) 673 { 674 if (buffer[i].type != (unsigned char) 0) 675 { 676 objfile->export_list[k].name 677 = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1); 678 strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name); 679 objfile->export_list[k].address = buffer[i].value; 680 /* Some day we might want to record the type and other information too */ 681 } 682 else 683 /* null type */ 684 { 685 objfile->export_list[k].name = NULL; 686 objfile->export_list[k].address = 0; 687 } 688 } 689 } 690 691 /* Get the leftovers */ 692 if (k < export_list_size) 693 bfd_get_section_contents (objfile->obfd, text_section, buffer, 694 export_list + k * sizeof (SomExportEntry), 695 (export_list_size - k) * sizeof (SomExportEntry)); 696 for (i = 0; k < export_list_size; i++, k++) 697 { 698 if (buffer[i].type != (unsigned char) 0) 699 { 700 objfile->export_list[k].name 701 = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1); 702 strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name); 703 /* Some day we might want to record the type and other information too */ 704 objfile->export_list[k].address = buffer[i].value; 705 } 706 else 707 { 708 objfile->export_list[k].name = NULL; 709 objfile->export_list[k].address = 0; 710 } 711 } 712 713 objfile->export_list_size = export_list_size; 714 xfree (string_buffer); 715 return export_list_size; 716} 717 718 719 720/* Register that we are able to handle SOM object file formats. */ 721 722static struct sym_fns som_sym_fns = 723{ 724 bfd_target_som_flavour, 725 som_new_init, /* sym_new_init: init anything gbl to entire symtab */ 726 som_symfile_init, /* sym_init: read initial info, setup for sym_read() */ 727 som_symfile_read, /* sym_read: read a symbol file into symtab */ 728 som_symfile_finish, /* sym_finish: finished with file, cleanup */ 729 som_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */ 730 NULL /* next: pointer to next struct sym_fns */ 731}; 732 733void 734_initialize_somread (void) 735{ 736 add_symtab_fns (&som_sym_fns); 737} 738