1 /* Definitions for symbol file management in GDB. 2 3 Copyright (C) 1992-2004, 2007-2012 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #if !defined (OBJFILES_H) 21 #define OBJFILES_H 22 23 #include "gdb_obstack.h" /* For obstack internals. */ 24 #include "symfile.h" /* For struct psymbol_allocation_list. */ 25 #include "progspace.h" 26 27 struct bcache; 28 struct htab; 29 struct symtab; 30 struct objfile_data; 31 32 /* This structure maintains information on a per-objfile basis about the 33 "entry point" of the objfile, and the scope within which the entry point 34 exists. It is possible that gdb will see more than one objfile that is 35 executable, each with its own entry point. 36 37 For example, for dynamically linked executables in SVR4, the dynamic linker 38 code is contained within the shared C library, which is actually executable 39 and is run by the kernel first when an exec is done of a user executable 40 that is dynamically linked. The dynamic linker within the shared C library 41 then maps in the various program segments in the user executable and jumps 42 to the user executable's recorded entry point, as if the call had been made 43 directly by the kernel. 44 45 The traditional gdb method of using this info was to use the 46 recorded entry point to set the entry-file's lowpc and highpc from 47 the debugging information, where these values are the starting 48 address (inclusive) and ending address (exclusive) of the 49 instruction space in the executable which correspond to the 50 "startup file", i.e. crt0.o in most cases. This file is assumed to 51 be a startup file and frames with pc's inside it are treated as 52 nonexistent. Setting these variables is necessary so that 53 backtraces do not fly off the bottom of the stack. 54 55 NOTE: cagney/2003-09-09: It turns out that this "traditional" 56 method doesn't work. Corinna writes: ``It turns out that the call 57 to test for "inside entry file" destroys a meaningful backtrace 58 under some conditions. E.g. the backtrace tests in the asm-source 59 testcase are broken for some targets. In this test the functions 60 are all implemented as part of one file and the testcase is not 61 necessarily linked with a start file (depending on the target). 62 What happens is, that the first frame is printed normaly and 63 following frames are treated as being inside the enttry file then. 64 This way, only the #0 frame is printed in the backtrace output.'' 65 Ref "frame.c" "NOTE: vinschen/2003-04-01". 66 67 Gdb also supports an alternate method to avoid running off the bottom 68 of the stack. 69 70 There are two frames that are "special", the frame for the function 71 containing the process entry point, since it has no predecessor frame, 72 and the frame for the function containing the user code entry point 73 (the main() function), since all the predecessor frames are for the 74 process startup code. Since we have no guarantee that the linked 75 in startup modules have any debugging information that gdb can use, 76 we need to avoid following frame pointers back into frames that might 77 have been built in the startup code, as we might get hopelessly 78 confused. However, we almost always have debugging information 79 available for main(). 80 81 These variables are used to save the range of PC values which are 82 valid within the main() function and within the function containing 83 the process entry point. If we always consider the frame for 84 main() as the outermost frame when debugging user code, and the 85 frame for the process entry point function as the outermost frame 86 when debugging startup code, then all we have to do is have 87 DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's 88 current PC is within the range specified by these variables. In 89 essence, we set "ceilings" in the frame chain beyond which we will 90 not proceed when following the frame chain back up the stack. 91 92 A nice side effect is that we can still debug startup code without 93 running off the end of the frame chain, assuming that we have usable 94 debugging information in the startup modules, and if we choose to not 95 use the block at main, or can't find it for some reason, everything 96 still works as before. And if we have no startup code debugging 97 information but we do have usable information for main(), backtraces 98 from user code don't go wandering off into the startup code. */ 99 100 struct entry_info 101 { 102 /* The relocated value we should use for this objfile entry point. */ 103 CORE_ADDR entry_point; 104 105 /* Set to 1 iff ENTRY_POINT contains a valid value. */ 106 unsigned entry_point_p : 1; 107 }; 108 109 /* Sections in an objfile. The section offsets are stored in the 110 OBJFILE. */ 111 112 struct obj_section 113 { 114 struct bfd_section *the_bfd_section; /* BFD section pointer */ 115 116 /* Objfile this section is part of. */ 117 struct objfile *objfile; 118 119 /* True if this "overlay section" is mapped into an "overlay region". */ 120 int ovly_mapped; 121 }; 122 123 /* Relocation offset applied to S. */ 124 #define obj_section_offset(s) \ 125 (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index]) 126 127 /* The memory address of section S (vma + offset). */ 128 #define obj_section_addr(s) \ 129 (bfd_get_section_vma ((s)->objfile->obfd, s->the_bfd_section) \ 130 + obj_section_offset (s)) 131 132 /* The one-passed-the-end memory address of section S 133 (vma + size + offset). */ 134 #define obj_section_endaddr(s) \ 135 (bfd_get_section_vma ((s)->objfile->obfd, s->the_bfd_section) \ 136 + bfd_get_section_size ((s)->the_bfd_section) \ 137 + obj_section_offset (s)) 138 139 /* The "objstats" structure provides a place for gdb to record some 140 interesting information about its internal state at runtime, on a 141 per objfile basis, such as information about the number of symbols 142 read, size of string table (if any), etc. */ 143 144 struct objstats 145 { 146 int n_minsyms; /* Number of minimal symbols read */ 147 int n_psyms; /* Number of partial symbols read */ 148 int n_syms; /* Number of full symbols read */ 149 int n_stabs; /* Number of ".stabs" read (if applicable) */ 150 int n_types; /* Number of types */ 151 int sz_strtab; /* Size of stringtable, (if applicable) */ 152 }; 153 154 #define OBJSTAT(objfile, expr) (objfile -> stats.expr) 155 #define OBJSTATS struct objstats stats 156 extern void print_objfile_statistics (void); 157 extern void print_symbol_bcache_statistics (void); 158 159 /* Number of entries in the minimal symbol hash table. */ 160 #define MINIMAL_SYMBOL_HASH_SIZE 2039 161 162 /* Master structure for keeping track of each file from which 163 gdb reads symbols. There are several ways these get allocated: 1. 164 The main symbol file, symfile_objfile, set by the symbol-file command, 165 2. Additional symbol files added by the add-symbol-file command, 166 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files 167 for modules that were loaded when GDB attached to a remote system 168 (see remote-vx.c). */ 169 170 struct objfile 171 { 172 173 /* All struct objfile's are chained together by their next pointers. 174 The program space field "objfiles" (frequently referenced via 175 the macro "object_files") points to the first link in this 176 chain. */ 177 178 struct objfile *next; 179 180 /* The object file's name, tilde-expanded and absolute. Malloc'd; free it 181 if you free this struct. This pointer is never NULL. */ 182 183 char *name; 184 185 CORE_ADDR addr_low; 186 187 /* Some flag bits for this objfile. 188 The values are defined by OBJF_*. */ 189 190 unsigned short flags; 191 192 /* The program space associated with this objfile. */ 193 194 struct program_space *pspace; 195 196 /* Each objfile points to a linked list of symtabs derived from this file, 197 one symtab structure for each compilation unit (source file). Each link 198 in the symtab list contains a backpointer to this objfile. */ 199 200 struct symtab *symtabs; 201 202 /* Each objfile points to a linked list of partial symtabs derived from 203 this file, one partial symtab structure for each compilation unit 204 (source file). */ 205 206 struct partial_symtab *psymtabs; 207 208 /* Map addresses to the entries of PSYMTABS. It would be more efficient to 209 have a map per the whole process but ADDRMAP cannot selectively remove 210 its items during FREE_OBJFILE. This mapping is already present even for 211 PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ 212 213 struct addrmap *psymtabs_addrmap; 214 215 /* List of freed partial symtabs, available for re-use. */ 216 217 struct partial_symtab *free_psymtabs; 218 219 /* The object file's BFD. Can be null if the objfile contains only 220 minimal symbols, e.g. the run time common symbols for SunOS4. */ 221 222 bfd *obfd; 223 224 /* The gdbarch associated with the BFD. Note that this gdbarch is 225 determined solely from BFD information, without looking at target 226 information. The gdbarch determined from a running target may 227 differ from this e.g. with respect to register types and names. */ 228 229 struct gdbarch *gdbarch; 230 231 /* The modification timestamp of the object file, as of the last time 232 we read its symbols. */ 233 234 long mtime; 235 236 /* Cached 32-bit CRC as computed by gnu_debuglink_crc32. CRC32 is valid 237 iff CRC32_P. */ 238 unsigned long crc32; 239 int crc32_p; 240 241 /* Obstack to hold objects that should be freed when we load a new symbol 242 table from this object file. */ 243 244 struct obstack objfile_obstack; 245 246 /* A byte cache where we can stash arbitrary "chunks" of bytes that 247 will not change. */ 248 249 struct psymbol_bcache *psymbol_cache; /* Byte cache for partial syms. */ 250 struct bcache *macro_cache; /* Byte cache for macros. */ 251 struct bcache *filename_cache; /* Byte cache for file names. */ 252 253 /* Hash table for mapping symbol names to demangled names. Each 254 entry in the hash table is actually two consecutive strings, 255 both null-terminated; the first one is a mangled or linkage 256 name, and the second is the demangled name or just a zero byte 257 if the name doesn't demangle. */ 258 struct htab *demangled_names_hash; 259 260 /* Vectors of all partial symbols read in from file. The actual data 261 is stored in the objfile_obstack. */ 262 263 struct psymbol_allocation_list global_psymbols; 264 struct psymbol_allocation_list static_psymbols; 265 266 /* Each file contains a pointer to an array of minimal symbols for all 267 global symbols that are defined within the file. The array is 268 terminated by a "null symbol", one that has a NULL pointer for the 269 name and a zero value for the address. This makes it easy to walk 270 through the array when passed a pointer to somewhere in the middle 271 of it. There is also a count of the number of symbols, which does 272 not include the terminating null symbol. The array itself, as well 273 as all the data that it points to, should be allocated on the 274 objfile_obstack for this file. */ 275 276 struct minimal_symbol *msymbols; 277 int minimal_symbol_count; 278 279 /* This is a hash table used to index the minimal symbols by name. */ 280 281 struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; 282 283 /* This hash table is used to index the minimal symbols by their 284 demangled names. */ 285 286 struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; 287 288 /* Structure which keeps track of functions that manipulate objfile's 289 of the same type as this objfile. I.e. the function to read partial 290 symbols for example. Note that this structure is in statically 291 allocated memory, and is shared by all objfiles that use the 292 object module reader of this type. */ 293 294 const struct sym_fns *sf; 295 296 /* The per-objfile information about the entry point, the scope (file/func) 297 containing the entry point, and the scope of the user's main() func. */ 298 299 struct entry_info ei; 300 301 /* Information about stabs. Will be filled in with a dbx_symfile_info 302 struct by those readers that need it. */ 303 /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile 304 data points implemented using "data" and "num_data" below. For 305 an example of how to use this replacement, see "objfile_data" 306 in "mips-tdep.c". */ 307 308 struct dbx_symfile_info *deprecated_sym_stab_info; 309 310 /* Hook for information for use by the symbol reader (currently used 311 for information shared by sym_init and sym_read). It is 312 typically a pointer to malloc'd memory. The symbol reader's finish 313 function is responsible for freeing the memory thusly allocated. */ 314 /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile 315 data points implemented using "data" and "num_data" below. For 316 an example of how to use this replacement, see "objfile_data" 317 in "mips-tdep.c". */ 318 319 void *deprecated_sym_private; 320 321 /* Per objfile data-pointers required by other GDB modules. */ 322 /* FIXME: kettenis/20030711: This mechanism could replace 323 deprecated_sym_stab_info and deprecated_sym_private 324 entirely. */ 325 326 void **data; 327 unsigned num_data; 328 329 /* Set of relocation offsets to apply to each section. 330 Currently on the objfile_obstack (which makes no sense, but I'm 331 not sure it's harming anything). 332 333 These offsets indicate that all symbols (including partial and 334 minimal symbols) which have been read have been relocated by this 335 much. Symbols which are yet to be read need to be relocated by 336 it. */ 337 338 struct section_offsets *section_offsets; 339 int num_sections; 340 341 /* Indexes in the section_offsets array. These are initialized by the 342 *_symfile_offsets() family of functions (som_symfile_offsets, 343 xcoff_symfile_offsets, default_symfile_offsets). In theory they 344 should correspond to the section indexes used by bfd for the 345 current objfile. The exception to this for the time being is the 346 SOM version. */ 347 348 int sect_index_text; 349 int sect_index_data; 350 int sect_index_bss; 351 int sect_index_rodata; 352 353 /* These pointers are used to locate the section table, which 354 among other things, is used to map pc addresses into sections. 355 SECTIONS points to the first entry in the table, and 356 SECTIONS_END points to the first location past the last entry 357 in the table. Currently the table is stored on the 358 objfile_obstack (which makes no sense, but I'm not sure it's 359 harming anything). */ 360 361 struct obj_section 362 *sections, *sections_end; 363 364 /* GDB allows to have debug symbols in separate object files. This is 365 used by .gnu_debuglink, ELF build id note and Mach-O OSO. 366 Although this is a tree structure, GDB only support one level 367 (ie a separate debug for a separate debug is not supported). Note that 368 separate debug object are in the main chain and therefore will be 369 visited by ALL_OBJFILES & co iterators. Separate debug objfile always 370 has a non-nul separate_debug_objfile_backlink. */ 371 372 /* Link to the first separate debug object, if any. */ 373 struct objfile *separate_debug_objfile; 374 375 /* If this is a separate debug object, this is used as a link to the 376 actual executable objfile. */ 377 struct objfile *separate_debug_objfile_backlink; 378 379 /* If this is a separate debug object, this is a link to the next one 380 for the same executable objfile. */ 381 struct objfile *separate_debug_objfile_link; 382 383 /* Place to stash various statistics about this objfile. */ 384 OBJSTATS; 385 386 /* A linked list of symbols created when reading template types or 387 function templates. These symbols are not stored in any symbol 388 table, so we have to keep them here to relocate them 389 properly. */ 390 struct symbol *template_symbols; 391 }; 392 393 /* Defines for the objfile flag word. */ 394 395 /* When an object file has its functions reordered (currently Irix-5.2 396 shared libraries exhibit this behaviour), we will need an expensive 397 algorithm to locate a partial symtab or symtab via an address. 398 To avoid this penalty for normal object files, we use this flag, 399 whose setting is determined upon symbol table read in. */ 400 401 #define OBJF_REORDERED (1 << 0) /* Functions are reordered */ 402 403 /* Distinguish between an objfile for a shared library and a "vanilla" 404 objfile. (If not set, the objfile may still actually be a solib. 405 This can happen if the user created the objfile by using the 406 add-symbol-file command. GDB doesn't in that situation actually 407 check whether the file is a solib. Rather, the target's 408 implementation of the solib interface is responsible for setting 409 this flag when noticing solibs used by an inferior.) */ 410 411 #define OBJF_SHARED (1 << 1) /* From a shared library */ 412 413 /* User requested that this objfile be read in it's entirety. */ 414 415 #define OBJF_READNOW (1 << 2) /* Immediate full read */ 416 417 /* This objfile was created because the user explicitly caused it 418 (e.g., used the add-symbol-file command). This bit offers a way 419 for run_command to remove old objfile entries which are no longer 420 valid (i.e., are associated with an old inferior), but to preserve 421 ones that the user explicitly loaded via the add-symbol-file 422 command. */ 423 424 #define OBJF_USERLOADED (1 << 3) /* User loaded */ 425 426 /* Set if we have tried to read partial symtabs for this objfile. 427 This is used to allow lazy reading of partial symtabs. */ 428 429 #define OBJF_PSYMTABS_READ (1 << 4) 430 431 /* Set if this is the main symbol file 432 (as opposed to symbol file for dynamically loaded code). */ 433 434 #define OBJF_MAINLINE (1 << 5) 435 436 /* The object file that contains the runtime common minimal symbols 437 for SunOS4. Note that this objfile has no associated BFD. */ 438 439 extern struct objfile *rt_common_objfile; 440 441 /* Declarations for functions defined in objfiles.c */ 442 443 extern struct objfile *allocate_objfile (bfd *, int); 444 445 extern struct gdbarch *get_objfile_arch (struct objfile *); 446 447 extern void init_entry_point_info (struct objfile *); 448 449 extern int entry_point_address_query (CORE_ADDR *entry_p); 450 451 extern CORE_ADDR entry_point_address (void); 452 453 extern int build_objfile_section_table (struct objfile *); 454 455 extern void terminate_minimal_symbol_table (struct objfile *objfile); 456 457 extern struct objfile *objfile_separate_debug_iterate (const struct objfile *, 458 const struct objfile *); 459 460 extern void put_objfile_before (struct objfile *, struct objfile *); 461 462 extern void objfile_to_front (struct objfile *); 463 464 extern void add_separate_debug_objfile (struct objfile *, struct objfile *); 465 466 extern void unlink_objfile (struct objfile *); 467 468 extern void free_objfile (struct objfile *); 469 470 extern void free_objfile_separate_debug (struct objfile *); 471 472 extern struct cleanup *make_cleanup_free_objfile (struct objfile *); 473 474 extern void free_all_objfiles (void); 475 476 extern void objfile_relocate (struct objfile *, struct section_offsets *); 477 478 extern int objfile_has_partial_symbols (struct objfile *objfile); 479 480 extern int objfile_has_full_symbols (struct objfile *objfile); 481 482 extern int objfile_has_symbols (struct objfile *objfile); 483 484 extern int have_partial_symbols (void); 485 486 extern int have_full_symbols (void); 487 488 extern void objfiles_changed (void); 489 490 /* This operation deletes all objfile entries that represent solibs that 491 weren't explicitly loaded by the user, via e.g., the add-symbol-file 492 command. */ 493 494 extern void objfile_purge_solibs (void); 495 496 /* Functions for dealing with the minimal symbol table, really a misc 497 address<->symbol mapping for things we don't have debug symbols for. */ 498 499 extern int have_minimal_symbols (void); 500 501 extern struct obj_section *find_pc_section (CORE_ADDR pc); 502 503 extern int in_plt_section (CORE_ADDR, char *); 504 505 /* Keep a registry of per-objfile data-pointers required by other GDB 506 modules. */ 507 508 /* Allocate an entry in the per-objfile registry. */ 509 extern const struct objfile_data *register_objfile_data (void); 510 511 /* Allocate an entry in the per-objfile registry. 512 SAVE and FREE are called when clearing objfile data. 513 First all registered SAVE functions are called. 514 Then all registered FREE functions are called. 515 Either or both of SAVE, FREE may be NULL. */ 516 extern const struct objfile_data *register_objfile_data_with_cleanup 517 (void (*save) (struct objfile *, void *), 518 void (*free) (struct objfile *, void *)); 519 520 extern void clear_objfile_data (struct objfile *objfile); 521 extern void set_objfile_data (struct objfile *objfile, 522 const struct objfile_data *data, void *value); 523 extern void *objfile_data (struct objfile *objfile, 524 const struct objfile_data *data); 525 526 extern struct bfd *gdb_bfd_ref (struct bfd *abfd); 527 extern void gdb_bfd_unref (struct bfd *abfd); 528 extern int gdb_bfd_close_or_warn (struct bfd *abfd); 529 530 531 /* Traverse all object files in the current program space. 532 ALL_OBJFILES_SAFE works even if you delete the objfile during the 533 traversal. */ 534 535 /* Traverse all object files in program space SS. */ 536 537 #define ALL_PSPACE_OBJFILES(ss, obj) \ 538 for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) \ 539 540 #define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \ 541 for ((obj) = ss->objfiles; \ 542 (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ 543 (obj) = (nxt)) 544 545 #define ALL_OBJFILES(obj) \ 546 for ((obj) = current_program_space->objfiles; \ 547 (obj) != NULL; \ 548 (obj) = (obj)->next) 549 550 #define ALL_OBJFILES_SAFE(obj,nxt) \ 551 for ((obj) = current_program_space->objfiles; \ 552 (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ 553 (obj) = (nxt)) 554 555 /* Traverse all symtabs in one objfile. */ 556 557 #define ALL_OBJFILE_SYMTABS(objfile, s) \ 558 for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) 559 560 /* Traverse all minimal symbols in one objfile. */ 561 562 #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ 563 for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++) 564 565 /* Traverse all symtabs in all objfiles in the current symbol 566 space. */ 567 568 #define ALL_SYMTABS(objfile, s) \ 569 ALL_OBJFILES (objfile) \ 570 ALL_OBJFILE_SYMTABS (objfile, s) 571 572 #define ALL_PSPACE_SYMTABS(ss, objfile, s) \ 573 ALL_PSPACE_OBJFILES (ss, objfile) \ 574 ALL_OBJFILE_SYMTABS (objfile, s) 575 576 /* Traverse all symtabs in all objfiles in the current program space, 577 skipping included files (which share a blockvector with their 578 primary symtab). */ 579 580 #define ALL_PRIMARY_SYMTABS(objfile, s) \ 581 ALL_OBJFILES (objfile) \ 582 ALL_OBJFILE_SYMTABS (objfile, s) \ 583 if ((s)->primary) 584 585 #define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \ 586 ALL_PSPACE_OBJFILES (ss, objfile) \ 587 ALL_OBJFILE_SYMTABS (objfile, s) \ 588 if ((s)->primary) 589 590 /* Traverse all minimal symbols in all objfiles in the current symbol 591 space. */ 592 593 #define ALL_MSYMBOLS(objfile, m) \ 594 ALL_OBJFILES (objfile) \ 595 ALL_OBJFILE_MSYMBOLS (objfile, m) 596 597 #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ 598 for (osect = objfile->sections; osect < objfile->sections_end; osect++) 599 600 /* Traverse all obj_sections in all objfiles in the current program 601 space. 602 603 Note that this detects a "break" in the inner loop, and exits 604 immediately from the outer loop as well, thus, client code doesn't 605 need to know that this is implemented with a double for. The extra 606 hair is to make sure that a "break;" stops the outer loop iterating 607 as well, and both OBJFILE and OSECT are left unmodified: 608 609 - The outer loop learns about the inner loop's end condition, and 610 stops iterating if it detects the inner loop didn't reach its 611 end. In other words, the outer loop keeps going only if the 612 inner loop reached its end cleanly [(osect) == 613 (objfile)->sections_end]. 614 615 - OSECT is initialized in the outer loop initialization 616 expressions, such as if the inner loop has reached its end, so 617 the check mentioned above succeeds the first time. 618 619 - The trick to not clearing OBJFILE on a "break;" is, in the outer 620 loop's loop expression, advance OBJFILE, but iff the inner loop 621 reached its end. If not, there was a "break;", so leave OBJFILE 622 as is; the outer loop's conditional will break immediately as 623 well (as OSECT will be different from OBJFILE->sections_end). */ 624 625 #define ALL_OBJSECTIONS(objfile, osect) \ 626 for ((objfile) = current_program_space->objfiles, \ 627 (objfile) != NULL ? ((osect) = (objfile)->sections_end) : 0; \ 628 (objfile) != NULL \ 629 && (osect) == (objfile)->sections_end; \ 630 ((osect) == (objfile)->sections_end \ 631 ? ((objfile) = (objfile)->next, \ 632 (objfile) != NULL ? (osect) = (objfile)->sections_end : 0) \ 633 : 0)) \ 634 for ((osect) = (objfile)->sections; \ 635 (osect) < (objfile)->sections_end; \ 636 (osect)++) 637 638 #define SECT_OFF_DATA(objfile) \ 639 ((objfile->sect_index_data == -1) \ 640 ? (internal_error (__FILE__, __LINE__, \ 641 _("sect_index_data not initialized")), -1) \ 642 : objfile->sect_index_data) 643 644 #define SECT_OFF_RODATA(objfile) \ 645 ((objfile->sect_index_rodata == -1) \ 646 ? (internal_error (__FILE__, __LINE__, \ 647 _("sect_index_rodata not initialized")), -1) \ 648 : objfile->sect_index_rodata) 649 650 #define SECT_OFF_TEXT(objfile) \ 651 ((objfile->sect_index_text == -1) \ 652 ? (internal_error (__FILE__, __LINE__, \ 653 _("sect_index_text not initialized")), -1) \ 654 : objfile->sect_index_text) 655 656 /* Sometimes the .bss section is missing from the objfile, so we don't 657 want to die here. Let the users of SECT_OFF_BSS deal with an 658 uninitialized section index. */ 659 #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss 660 661 /* Answer whether there is more than one object file loaded. */ 662 663 #define MULTI_OBJFILE_P() (object_files && object_files->next) 664 665 #endif /* !defined (OBJFILES_H) */ 666