1 /* Definitions for symbol file management in GDB. 2 3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 4 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. 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 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #if !defined (OBJFILES_H) 22 #define OBJFILES_H 23 24 #include "gdb_obstack.h" /* For obstack internals. */ 25 #include "symfile.h" /* For struct psymbol_allocation_list */ 26 #include "progspace.h" 27 28 struct bcache; 29 struct htab; 30 struct symtab; 31 struct objfile_data; 32 33 /* This structure maintains information on a per-objfile basis about the 34 "entry point" of the objfile, and the scope within which the entry point 35 exists. It is possible that gdb will see more than one objfile that is 36 executable, each with its own entry point. 37 38 For example, for dynamically linked executables in SVR4, the dynamic linker 39 code is contained within the shared C library, which is actually executable 40 and is run by the kernel first when an exec is done of a user executable 41 that is dynamically linked. The dynamic linker within the shared C library 42 then maps in the various program segments in the user executable and jumps 43 to the user executable's recorded entry point, as if the call had been made 44 directly by the kernel. 45 46 The traditional gdb method of using this info was to use the 47 recorded entry point to set the entry-file's lowpc and highpc from 48 the debugging information, where these values are the starting 49 address (inclusive) and ending address (exclusive) of the 50 instruction space in the executable which correspond to the 51 "startup file", I.E. crt0.o in most cases. This file is assumed to 52 be a startup file and frames with pc's inside it are treated as 53 nonexistent. Setting these variables is necessary so that 54 backtraces do not fly off the bottom of the stack. 55 56 NOTE: cagney/2003-09-09: It turns out that this "traditional" 57 method doesn't work. Corinna writes: ``It turns out that the call 58 to test for "inside entry file" destroys a meaningful backtrace 59 under some conditions. E. g. the backtrace tests in the asm-source 60 testcase are broken for some targets. In this test the functions 61 are all implemented as part of one file and the testcase is not 62 necessarily linked with a start file (depending on the target). 63 What happens is, that the first frame is printed normaly and 64 following frames are treated as being inside the enttry file then. 65 This way, only the #0 frame is printed in the backtrace output.'' 66 Ref "frame.c" "NOTE: vinschen/2003-04-01". 67 68 Gdb also supports an alternate method to avoid running off the bottom 69 of the stack. 70 71 There are two frames that are "special", the frame for the function 72 containing the process entry point, since it has no predecessor frame, 73 and the frame for the function containing the user code entry point 74 (the main() function), since all the predecessor frames are for the 75 process startup code. Since we have no guarantee that the linked 76 in startup modules have any debugging information that gdb can use, 77 we need to avoid following frame pointers back into frames that might 78 have been built in the startup code, as we might get hopelessly 79 confused. However, we almost always have debugging information 80 available for main(). 81 82 These variables are used to save the range of PC values which are 83 valid within the main() function and within the function containing 84 the process entry point. If we always consider the frame for 85 main() as the outermost frame when debugging user code, and the 86 frame for the process entry point function as the outermost frame 87 when debugging startup code, then all we have to do is have 88 DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's 89 current PC is within the range specified by these variables. In 90 essence, we set "ceilings" in the frame chain beyond which we will 91 not proceed when following the frame chain back up the stack. 92 93 A nice side effect is that we can still debug startup code without 94 running off the end of the frame chain, assuming that we have usable 95 debugging information in the startup modules, and if we choose to not 96 use the block at main, or can't find it for some reason, everything 97 still works as before. And if we have no startup code debugging 98 information but we do have usable information for main(), backtraces 99 from user code don't go wandering off into the startup code. */ 100 101 struct entry_info 102 { 103 /* The relocated value we should use for this objfile entry point. */ 104 CORE_ADDR entry_point; 105 106 /* Set to 1 iff ENTRY_POINT contains a valid value. */ 107 unsigned entry_point_p : 1; 108 }; 109 110 /* Sections in an objfile. The section offsets are stored in the 111 OBJFILE. */ 112 113 struct obj_section 114 { 115 struct bfd_section *the_bfd_section; /* BFD section pointer */ 116 117 /* Objfile this section is part of. */ 118 struct objfile *objfile; 119 120 /* True if this "overlay section" is mapped into an "overlay region". */ 121 int ovly_mapped; 122 }; 123 124 /* Relocation offset applied to S. */ 125 #define obj_section_offset(s) \ 126 (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index]) 127 128 /* The memory address of section S (vma + offset). */ 129 #define obj_section_addr(s) \ 130 (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ 131 + obj_section_offset (s)) 132 133 /* The one-passed-the-end memory address of section S 134 (vma + size + offset). */ 135 #define obj_section_endaddr(s) \ 136 (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ 137 + bfd_get_section_size ((s)->the_bfd_section) \ 138 + obj_section_offset (s)) 139 140 /* The "objstats" structure provides a place for gdb to record some 141 interesting information about its internal state at runtime, on a 142 per objfile basis, such as information about the number of symbols 143 read, size of string table (if any), etc. */ 144 145 struct objstats 146 { 147 int n_minsyms; /* Number of minimal symbols read */ 148 int n_psyms; /* Number of partial symbols read */ 149 int n_syms; /* Number of full symbols read */ 150 int n_stabs; /* Number of ".stabs" read (if applicable) */ 151 int n_types; /* Number of types */ 152 int sz_strtab; /* Size of stringtable, (if applicable) */ 153 }; 154 155 #define OBJSTAT(objfile, expr) (objfile -> stats.expr) 156 #define OBJSTATS struct objstats stats 157 extern void print_objfile_statistics (void); 158 extern void print_symbol_bcache_statistics (void); 159 160 /* Number of entries in the minimal symbol hash table. */ 161 #define MINIMAL_SYMBOL_HASH_SIZE 2039 162 163 /* Master structure for keeping track of each file from which 164 gdb reads symbols. There are several ways these get allocated: 1. 165 The main symbol file, symfile_objfile, set by the symbol-file command, 166 2. Additional symbol files added by the add-symbol-file command, 167 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files 168 for modules that were loaded when GDB attached to a remote system 169 (see remote-vx.c). */ 170 171 struct objfile 172 { 173 174 /* All struct objfile's are chained together by their next pointers. 175 The global variable "object_files" points to the first link in this 176 chain. 177 178 FIXME: There is a problem here if the objfile is reusable, and if 179 multiple users are to be supported. The problem is that the objfile 180 list is linked through a member of the objfile struct itself, which 181 is only valid for one gdb process. The list implementation needs to 182 be changed to something like: 183 184 struct list {struct list *next; struct objfile *objfile}; 185 186 where the list structure is completely maintained separately within 187 each gdb process. */ 188 189 struct objfile *next; 190 191 /* The object file's name, tilde-expanded and absolute. 192 Malloc'd; free it if you free this struct. */ 193 194 char *name; 195 196 /* Some flag bits for this objfile. */ 197 198 unsigned short flags; 199 200 /* The program space associated with this objfile. */ 201 202 struct program_space *pspace; 203 204 /* Each objfile points to a linked list of symtabs derived from this file, 205 one symtab structure for each compilation unit (source file). Each link 206 in the symtab list contains a backpointer to this objfile. */ 207 208 struct symtab *symtabs; 209 210 /* Each objfile points to a linked list of partial symtabs derived from 211 this file, one partial symtab structure for each compilation unit 212 (source file). */ 213 214 struct partial_symtab *psymtabs; 215 216 /* Map addresses to the entries of PSYMTABS. It would be more efficient to 217 have a map per the whole process but ADDRMAP cannot selectively remove 218 its items during FREE_OBJFILE. This mapping is already present even for 219 PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ 220 221 struct addrmap *psymtabs_addrmap; 222 223 /* List of freed partial symtabs, available for re-use */ 224 225 struct partial_symtab *free_psymtabs; 226 227 /* The object file's BFD. Can be null if the objfile contains only 228 minimal symbols, e.g. the run time common symbols for SunOS4. */ 229 230 bfd *obfd; 231 232 /* The gdbarch associated with the BFD. Note that this gdbarch is 233 determined solely from BFD information, without looking at target 234 information. The gdbarch determined from a running target may 235 differ from this e.g. with respect to register types and names. */ 236 237 struct gdbarch *gdbarch; 238 239 /* The modification timestamp of the object file, as of the last time 240 we read its symbols. */ 241 242 long mtime; 243 244 /* Obstack to hold objects that should be freed when we load a new symbol 245 table from this object file. */ 246 247 struct obstack objfile_obstack; 248 249 /* A byte cache where we can stash arbitrary "chunks" of bytes that 250 will not change. */ 251 252 struct bcache *psymbol_cache; /* Byte cache for partial syms */ 253 struct bcache *macro_cache; /* Byte cache for macros */ 254 struct bcache *filename_cache; /* Byte cache for file names. */ 255 256 /* Hash table for mapping symbol names to demangled names. Each 257 entry in the hash table is actually two consecutive strings, 258 both null-terminated; the first one is a mangled or linkage 259 name, and the second is the demangled name or just a zero byte 260 if the name doesn't demangle. */ 261 struct htab *demangled_names_hash; 262 263 /* Vectors of all partial symbols read in from file. The actual data 264 is stored in the objfile_obstack. */ 265 266 struct psymbol_allocation_list global_psymbols; 267 struct psymbol_allocation_list static_psymbols; 268 269 /* Each file contains a pointer to an array of minimal symbols for all 270 global symbols that are defined within the file. The array is terminated 271 by a "null symbol", one that has a NULL pointer for the name and a zero 272 value for the address. This makes it easy to walk through the array 273 when passed a pointer to somewhere in the middle of it. There is also 274 a count of the number of symbols, which does not include the terminating 275 null symbol. The array itself, as well as all the data that it points 276 to, should be allocated on the objfile_obstack for this file. */ 277 278 struct minimal_symbol *msymbols; 279 int minimal_symbol_count; 280 281 /* This is a hash table used to index the minimal symbols by name. */ 282 283 struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; 284 285 /* This hash table is used to index the minimal symbols by their 286 demangled names. */ 287 288 struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; 289 290 /* Structure which keeps track of functions that manipulate objfile's 291 of the same type as this objfile. I.E. the function to read partial 292 symbols for example. Note that this structure is in statically 293 allocated memory, and is shared by all objfiles that use the 294 object module reader of this type. */ 295 296 struct sym_fns *sf; 297 298 /* The per-objfile information about the entry point, the scope (file/func) 299 containing the entry point, and the scope of the user's main() func. */ 300 301 struct entry_info ei; 302 303 /* Information about stabs. Will be filled in with a dbx_symfile_info 304 struct by those readers that need it. */ 305 /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile 306 data points implemented using "data" and "num_data" below. For 307 an example of how to use this replacement, see "objfile_data" 308 in "mips-tdep.c". */ 309 310 struct dbx_symfile_info *deprecated_sym_stab_info; 311 312 /* Hook for information for use by the symbol reader (currently used 313 for information shared by sym_init and sym_read). It is 314 typically a pointer to malloc'd memory. The symbol reader's finish 315 function is responsible for freeing the memory thusly allocated. */ 316 /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile 317 data points implemented using "data" and "num_data" below. For 318 an example of how to use this replacement, see "objfile_data" 319 in "mips-tdep.c". */ 320 321 void *deprecated_sym_private; 322 323 /* Per objfile data-pointers required by other GDB modules. */ 324 /* FIXME: kettenis/20030711: This mechanism could replace 325 deprecated_sym_stab_info and deprecated_sym_private 326 entirely. */ 327 328 void **data; 329 unsigned num_data; 330 331 /* Set of relocation offsets to apply to each section. 332 Currently on the objfile_obstack (which makes no sense, but I'm 333 not sure it's harming anything). 334 335 These offsets indicate that all symbols (including partial and 336 minimal symbols) which have been read have been relocated by this 337 much. Symbols which are yet to be read need to be relocated by 338 it. */ 339 340 struct section_offsets *section_offsets; 341 int num_sections; 342 343 /* Indexes in the section_offsets array. These are initialized by the 344 *_symfile_offsets() family of functions (som_symfile_offsets, 345 xcoff_symfile_offsets, default_symfile_offsets). In theory they 346 should correspond to the section indexes used by bfd for the 347 current objfile. The exception to this for the time being is the 348 SOM version. */ 349 350 int sect_index_text; 351 int sect_index_data; 352 int sect_index_bss; 353 int sect_index_rodata; 354 355 /* These pointers are used to locate the section table, which 356 among other things, is used to map pc addresses into sections. 357 SECTIONS points to the first entry in the table, and 358 SECTIONS_END points to the first location past the last entry 359 in the table. Currently the table is stored on the 360 objfile_obstack (which makes no sense, but I'm not sure it's 361 harming anything). */ 362 363 struct obj_section 364 *sections, *sections_end; 365 366 /* GDB allows to have debug symbols in separate object files. This is 367 used by .gnu_debuglink, ELF build id note and Mach-O OSO. 368 Although this is a tree structure, GDB only support one level 369 (ie a separate debug for a separate debug is not supported). Note that 370 separate debug object are in the main chain and therefore will be 371 visited by ALL_OBJFILES & co iterators. Separate debug objfile always 372 has a non-nul separate_debug_objfile_backlink. */ 373 374 /* Link to the first separate debug object, if any. */ 375 struct objfile *separate_debug_objfile; 376 377 /* If this is a separate debug object, this is used as a link to the 378 actual executable objfile. */ 379 struct objfile *separate_debug_objfile_backlink; 380 381 /* If this is a separate debug object, this is a link to the next one 382 for the same executable objfile. */ 383 struct objfile *separate_debug_objfile_link; 384 385 /* Place to stash various statistics about this objfile */ 386 OBJSTATS; 387 388 /* A symtab that the C++ code uses to stash special symbols 389 associated to namespaces. */ 390 391 /* FIXME/carlton-2003-06-27: Delete this in a few years once 392 "possible namespace symbols" go away. */ 393 struct symtab *cp_namespace_symtab; 394 }; 395 396 /* Defines for the objfile flag word. */ 397 398 /* When an object file has its functions reordered (currently Irix-5.2 399 shared libraries exhibit this behaviour), we will need an expensive 400 algorithm to locate a partial symtab or symtab via an address. 401 To avoid this penalty for normal object files, we use this flag, 402 whose setting is determined upon symbol table read in. */ 403 404 #define OBJF_REORDERED (1 << 0) /* Functions are reordered */ 405 406 /* Distinguish between an objfile for a shared library and a "vanilla" 407 objfile. (If not set, the objfile may still actually be a solib. 408 This can happen if the user created the objfile by using the 409 add-symbol-file command. GDB doesn't in that situation actually 410 check whether the file is a solib. Rather, the target's 411 implementation of the solib interface is responsible for setting 412 this flag when noticing solibs used by an inferior.) */ 413 414 #define OBJF_SHARED (1 << 1) /* From a shared library */ 415 416 /* User requested that this objfile be read in it's entirety. */ 417 418 #define OBJF_READNOW (1 << 2) /* Immediate full read */ 419 420 /* This objfile was created because the user explicitly caused it 421 (e.g., used the add-symbol-file command). This bit offers a way 422 for run_command to remove old objfile entries which are no longer 423 valid (i.e., are associated with an old inferior), but to preserve 424 ones that the user explicitly loaded via the add-symbol-file 425 command. */ 426 427 #define OBJF_USERLOADED (1 << 3) /* User loaded */ 428 429 /* The object file that contains the runtime common minimal symbols 430 for SunOS4. Note that this objfile has no associated BFD. */ 431 432 extern struct objfile *rt_common_objfile; 433 434 /* When we need to allocate a new type, we need to know which objfile_obstack 435 to allocate the type on, since there is one for each objfile. The places 436 where types are allocated are deeply buried in function call hierarchies 437 which know nothing about objfiles, so rather than trying to pass a 438 particular objfile down to them, we just do an end run around them and 439 set current_objfile to be whatever objfile we expect to be using at the 440 time types are being allocated. For instance, when we start reading 441 symbols for a particular objfile, we set current_objfile to point to that 442 objfile, and when we are done, we set it back to NULL, to ensure that we 443 never put a type someplace other than where we are expecting to put it. 444 FIXME: Maybe we should review the entire type handling system and 445 see if there is a better way to avoid this problem. */ 446 447 extern struct objfile *current_objfile; 448 449 /* Declarations for functions defined in objfiles.c */ 450 451 extern struct objfile *allocate_objfile (bfd *, int); 452 453 extern struct gdbarch *get_objfile_arch (struct objfile *); 454 455 extern void init_entry_point_info (struct objfile *); 456 457 extern int entry_point_address_query (CORE_ADDR *entry_p); 458 459 extern CORE_ADDR entry_point_address (void); 460 461 extern int build_objfile_section_table (struct objfile *); 462 463 extern void terminate_minimal_symbol_table (struct objfile *objfile); 464 465 extern struct objfile *objfile_separate_debug_iterate (const struct objfile *, 466 const struct objfile *); 467 468 extern void put_objfile_before (struct objfile *, struct objfile *); 469 470 extern void objfile_to_front (struct objfile *); 471 472 extern void add_separate_debug_objfile (struct objfile *, struct objfile *); 473 474 extern void unlink_objfile (struct objfile *); 475 476 extern void free_objfile (struct objfile *); 477 478 extern void free_objfile_separate_debug (struct objfile *); 479 480 extern struct cleanup *make_cleanup_free_objfile (struct objfile *); 481 482 extern void free_all_objfiles (void); 483 484 extern void objfile_relocate (struct objfile *, struct section_offsets *); 485 486 extern int objfile_has_partial_symbols (struct objfile *objfile); 487 488 extern int objfile_has_full_symbols (struct objfile *objfile); 489 490 extern int objfile_has_symbols (struct objfile *objfile); 491 492 extern int have_partial_symbols (void); 493 494 extern int have_full_symbols (void); 495 496 extern void objfiles_changed (void); 497 498 /* This operation deletes all objfile entries that represent solibs that 499 weren't explicitly loaded by the user, via e.g., the add-symbol-file 500 command. 501 */ 502 extern void objfile_purge_solibs (void); 503 504 /* Functions for dealing with the minimal symbol table, really a misc 505 address<->symbol mapping for things we don't have debug symbols for. */ 506 507 extern int have_minimal_symbols (void); 508 509 extern struct obj_section *find_pc_section (CORE_ADDR pc); 510 511 extern int in_plt_section (CORE_ADDR, char *); 512 513 /* Keep a registry of per-objfile data-pointers required by other GDB 514 modules. */ 515 516 /* Allocate an entry in the per-objfile registry. */ 517 extern const struct objfile_data *register_objfile_data (void); 518 519 /* Allocate an entry in the per-objfile registry. 520 SAVE and FREE are called when clearing objfile data. 521 First all registered SAVE functions are called. 522 Then all registered FREE functions are called. 523 Either or both of SAVE, FREE may be NULL. */ 524 extern const struct objfile_data *register_objfile_data_with_cleanup 525 (void (*save) (struct objfile *, void *), 526 void (*free) (struct objfile *, void *)); 527 528 extern void clear_objfile_data (struct objfile *objfile); 529 extern void set_objfile_data (struct objfile *objfile, 530 const struct objfile_data *data, void *value); 531 extern void *objfile_data (struct objfile *objfile, 532 const struct objfile_data *data); 533 534 extern struct bfd *gdb_bfd_ref (struct bfd *abfd); 535 extern void gdb_bfd_unref (struct bfd *abfd); 536 extern int gdb_bfd_close_or_warn (struct bfd *abfd); 537 538 539 /* Traverse all object files in the current program space. 540 ALL_OBJFILES_SAFE works even if you delete the objfile during the 541 traversal. */ 542 543 /* Traverse all object files in program space SS. */ 544 545 #define ALL_PSPACE_OBJFILES(ss, obj) \ 546 for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) \ 547 548 #define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \ 549 for ((obj) = ss->objfiles; \ 550 (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ 551 (obj) = (nxt)) 552 553 #define ALL_OBJFILES(obj) \ 554 for ((obj) = current_program_space->objfiles; \ 555 (obj) != NULL; \ 556 (obj) = (obj)->next) 557 558 #define ALL_OBJFILES_SAFE(obj,nxt) \ 559 for ((obj) = current_program_space->objfiles; \ 560 (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ 561 (obj) = (nxt)) 562 563 /* Traverse all symtabs in one objfile. */ 564 565 #define ALL_OBJFILE_SYMTABS(objfile, s) \ 566 for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) 567 568 /* Traverse all minimal symbols in one objfile. */ 569 570 #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ 571 for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++) 572 573 /* Traverse all symtabs in all objfiles in the current symbol 574 space. */ 575 576 #define ALL_SYMTABS(objfile, s) \ 577 ALL_OBJFILES (objfile) \ 578 ALL_OBJFILE_SYMTABS (objfile, s) 579 580 #define ALL_PSPACE_SYMTABS(ss, objfile, s) \ 581 ALL_PSPACE_OBJFILES (ss, objfile) \ 582 ALL_OBJFILE_SYMTABS (objfile, s) 583 584 /* Traverse all symtabs in all objfiles in the current program space, 585 skipping included files (which share a blockvector with their 586 primary symtab). */ 587 588 #define ALL_PRIMARY_SYMTABS(objfile, s) \ 589 ALL_OBJFILES (objfile) \ 590 ALL_OBJFILE_SYMTABS (objfile, s) \ 591 if ((s)->primary) 592 593 #define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \ 594 ALL_PSPACE_OBJFILES (ss, objfile) \ 595 ALL_OBJFILE_SYMTABS (objfile, s) \ 596 if ((s)->primary) 597 598 /* Traverse all minimal symbols in all objfiles in the current symbol 599 space. */ 600 601 #define ALL_MSYMBOLS(objfile, m) \ 602 ALL_OBJFILES (objfile) \ 603 ALL_OBJFILE_MSYMBOLS (objfile, m) 604 605 #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ 606 for (osect = objfile->sections; osect < objfile->sections_end; osect++) 607 608 #define ALL_OBJSECTIONS(objfile, osect) \ 609 ALL_OBJFILES (objfile) \ 610 ALL_OBJFILE_OSECTIONS (objfile, osect) 611 612 #define SECT_OFF_DATA(objfile) \ 613 ((objfile->sect_index_data == -1) \ 614 ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \ 615 : objfile->sect_index_data) 616 617 #define SECT_OFF_RODATA(objfile) \ 618 ((objfile->sect_index_rodata == -1) \ 619 ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \ 620 : objfile->sect_index_rodata) 621 622 #define SECT_OFF_TEXT(objfile) \ 623 ((objfile->sect_index_text == -1) \ 624 ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \ 625 : objfile->sect_index_text) 626 627 /* Sometimes the .bss section is missing from the objfile, so we don't 628 want to die here. Let the users of SECT_OFF_BSS deal with an 629 uninitialized section index. */ 630 #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss 631 632 /* Answer whether there is more than one object file loaded. */ 633 634 #define MULTI_OBJFILE_P() (object_files && object_files->next) 635 636 #endif /* !defined (OBJFILES_H) */ 637