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1 24 jeremybenn
/* 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 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
 
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
 
103
    /* The value we should use for this objects entry point.
104
       The illegal/unknown value needs to be something other than 0, ~0
105
       for instance, which is much less likely than 0. */
106
 
107
    CORE_ADDR entry_point;
108
 
109
#define INVALID_ENTRY_POINT (~0)        /* ~0 will not be in any file, we hope.  */
110
 
111
  };
112
 
113
/* Sections in an objfile.
114
 
115
   It is strange that we have both this notion of "sections"
116
   and the one used by section_offsets.  Section as used
117
   here, (currently at least) means a BFD section, and the sections
118
   are set up from the BFD sections in allocate_objfile.
119
 
120
   The sections in section_offsets have their meaning determined by
121
   the symbol format, and they are set up by the sym_offsets function
122
   for that symbol file format.
123
 
124
   I'm not sure this could or should be changed, however.  */
125
 
126
struct obj_section
127
  {
128
    CORE_ADDR addr;             /* lowest address in section */
129
    CORE_ADDR endaddr;          /* 1+highest address in section */
130
 
131
    /* This field is being used for nefarious purposes by syms_from_objfile.
132
       It is said to be redundant with section_offsets; it's not really being
133
       used that way, however, it's some sort of hack I don't understand
134
       and am not going to try to eliminate (yet, anyway).  FIXME.
135
 
136
       It was documented as "offset between (end)addr and actual memory
137
       addresses", but that's not true; addr & endaddr are actual memory
138
       addresses.  */
139
    CORE_ADDR offset;
140
 
141
    struct bfd_section *the_bfd_section;        /* BFD section pointer */
142
 
143
    /* Objfile this section is part of.  */
144
    struct objfile *objfile;
145
 
146
    /* True if this "overlay section" is mapped into an "overlay region". */
147
    int ovly_mapped;
148
  };
149
 
150
 
151
/* The "objstats" structure provides a place for gdb to record some
152
   interesting information about its internal state at runtime, on a
153
   per objfile basis, such as information about the number of symbols
154
   read, size of string table (if any), etc. */
155
 
156
struct objstats
157
  {
158
    int n_minsyms;              /* Number of minimal symbols read */
159
    int n_psyms;                /* Number of partial symbols read */
160
    int n_syms;                 /* Number of full symbols read */
161
    int n_stabs;                /* Number of ".stabs" read (if applicable) */
162
    int n_types;                /* Number of types */
163
    int sz_strtab;              /* Size of stringtable, (if applicable) */
164
  };
165
 
166
#define OBJSTAT(objfile, expr) (objfile -> stats.expr)
167
#define OBJSTATS struct objstats stats
168
extern void print_objfile_statistics (void);
169
extern void print_symbol_bcache_statistics (void);
170
 
171
/* Number of entries in the minimal symbol hash table.  */
172
#define MINIMAL_SYMBOL_HASH_SIZE 2039
173
 
174
/* Master structure for keeping track of each file from which
175
   gdb reads symbols.  There are several ways these get allocated: 1.
176
   The main symbol file, symfile_objfile, set by the symbol-file command,
177
   2.  Additional symbol files added by the add-symbol-file command,
178
   3.  Shared library objfiles, added by ADD_SOLIB,  4.  symbol files
179
   for modules that were loaded when GDB attached to a remote system
180
   (see remote-vx.c).  */
181
 
182
struct objfile
183
  {
184
 
185
    /* All struct objfile's are chained together by their next pointers.
186
       The global variable "object_files" points to the first link in this
187
       chain.
188
 
189
       FIXME:  There is a problem here if the objfile is reusable, and if
190
       multiple users are to be supported.  The problem is that the objfile
191
       list is linked through a member of the objfile struct itself, which
192
       is only valid for one gdb process.  The list implementation needs to
193
       be changed to something like:
194
 
195
       struct list {struct list *next; struct objfile *objfile};
196
 
197
       where the list structure is completely maintained separately within
198
       each gdb process. */
199
 
200
    struct objfile *next;
201
 
202
    /* The object file's name, tilde-expanded and absolute.
203
       Malloc'd; free it if you free this struct.  */
204
 
205
    char *name;
206
 
207
    /* Some flag bits for this objfile. */
208
 
209
    unsigned short flags;
210
 
211
    /* Each objfile points to a linked list of symtabs derived from this file,
212
       one symtab structure for each compilation unit (source file).  Each link
213
       in the symtab list contains a backpointer to this objfile. */
214
 
215
    struct symtab *symtabs;
216
 
217
    /* Each objfile points to a linked list of partial symtabs derived from
218
       this file, one partial symtab structure for each compilation unit
219
       (source file). */
220
 
221
    struct partial_symtab *psymtabs;
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 modification timestamp of the object file, as of the last time
233
       we read its symbols.  */
234
 
235
    long mtime;
236
 
237
    /* Obstack to hold objects that should be freed when we load a new symbol
238
       table from this object file. */
239
 
240
    struct obstack objfile_obstack;
241
 
242
    /* A byte cache where we can stash arbitrary "chunks" of bytes that
243
       will not change. */
244
 
245
    struct bcache *psymbol_cache;       /* Byte cache for partial syms */
246
    struct bcache *macro_cache;          /* Byte cache for macros */
247
 
248
    /* Hash table for mapping symbol names to demangled names.  Each
249
       entry in the hash table is actually two consecutive strings,
250
       both null-terminated; the first one is a mangled or linkage
251
       name, and the second is the demangled name or just a zero byte
252
       if the name doesn't demangle.  */
253
    struct htab *demangled_names_hash;
254
 
255
    /* Vectors of all partial symbols read in from file.  The actual data
256
       is stored in the objfile_obstack. */
257
 
258
    struct psymbol_allocation_list global_psymbols;
259
    struct psymbol_allocation_list static_psymbols;
260
 
261
    /* Each file contains a pointer to an array of minimal symbols for all
262
       global symbols that are defined within the file.  The array is terminated
263
       by a "null symbol", one that has a NULL pointer for the name and a zero
264
       value for the address.  This makes it easy to walk through the array
265
       when passed a pointer to somewhere in the middle of it.  There is also
266
       a count of the number of symbols, which does not include the terminating
267
       null symbol.  The array itself, as well as all the data that it points
268
       to, should be allocated on the objfile_obstack for this file. */
269
 
270
    struct minimal_symbol *msymbols;
271
    int minimal_symbol_count;
272
 
273
    /* This is a hash table used to index the minimal symbols by name.  */
274
 
275
    struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
276
 
277
    /* This hash table is used to index the minimal symbols by their
278
       demangled names.  */
279
 
280
    struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
281
 
282
    /* The mmalloc() malloc-descriptor for this objfile if we are using
283
       the memory mapped malloc() package to manage storage for this objfile's
284
       data.  NULL if we are not. */
285
 
286
    void *md;
287
 
288
    /* The file descriptor that was used to obtain the mmalloc descriptor
289
       for this objfile.  If we call mmalloc_detach with the malloc descriptor
290
       we should then close this file descriptor. */
291
 
292
    int mmfd;
293
 
294
    /* Structure which keeps track of functions that manipulate objfile's
295
       of the same type as this objfile.  I.E. the function to read partial
296
       symbols for example.  Note that this structure is in statically
297
       allocated memory, and is shared by all objfiles that use the
298
       object module reader of this type. */
299
 
300
    struct sym_fns *sf;
301
 
302
    /* The per-objfile information about the entry point, the scope (file/func)
303
       containing the entry point, and the scope of the user's main() func. */
304
 
305
    struct entry_info ei;
306
 
307
    /* Information about stabs.  Will be filled in with a dbx_symfile_info
308
       struct by those readers that need it. */
309
    /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile
310
       data points implemented using "data" and "num_data" below.  For
311
       an example of how to use this replacement, see "objfile_data"
312
       in "mips-tdep.c".  */
313
 
314
    struct dbx_symfile_info *deprecated_sym_stab_info;
315
 
316
    /* Hook for information for use by the symbol reader (currently used
317
       for information shared by sym_init and sym_read).  It is
318
       typically a pointer to malloc'd memory.  The symbol reader's finish
319
       function is responsible for freeing the memory thusly allocated.  */
320
    /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile
321
       data points implemented using "data" and "num_data" below.  For
322
       an example of how to use this replacement, see "objfile_data"
323
       in "mips-tdep.c".  */
324
 
325
    void *deprecated_sym_private;
326
 
327
    /* Hook for target-architecture-specific information.  This must
328
       point to memory allocated on one of the obstacks in this objfile,
329
       so that it gets freed automatically when reading a new object
330
       file. */
331
 
332
    void *deprecated_obj_private;
333
 
334
    /* Per objfile data-pointers required by other GDB modules.  */
335
    /* FIXME: kettenis/20030711: This mechanism could replace
336
       deprecated_sym_stab_info, deprecated_sym_private and
337
       deprecated_obj_private entirely.  */
338
 
339
    void **data;
340
    unsigned num_data;
341
 
342
    /* Set of relocation offsets to apply to each section.
343
       Currently on the objfile_obstack (which makes no sense, but I'm
344
       not sure it's harming anything).
345
 
346
       These offsets indicate that all symbols (including partial and
347
       minimal symbols) which have been read have been relocated by this
348
       much.  Symbols which are yet to be read need to be relocated by
349
       it.  */
350
 
351
    struct section_offsets *section_offsets;
352
    int num_sections;
353
 
354
    /* Indexes in the section_offsets array. These are initialized by the
355
       *_symfile_offsets() family of functions (som_symfile_offsets,
356
       xcoff_symfile_offsets, default_symfile_offsets). In theory they
357
       should correspond to the section indexes used by bfd for the
358
       current objfile. The exception to this for the time being is the
359
       SOM version. */
360
 
361
    int sect_index_text;
362
    int sect_index_data;
363
    int sect_index_bss;
364
    int sect_index_rodata;
365
 
366
    /* These pointers are used to locate the section table, which
367
       among other things, is used to map pc addresses into sections.
368
       SECTIONS points to the first entry in the table, and
369
       SECTIONS_END points to the first location past the last entry
370
       in the table.  Currently the table is stored on the
371
       objfile_obstack (which makes no sense, but I'm not sure it's
372
       harming anything).  */
373
 
374
    struct obj_section
375
     *sections, *sections_end;
376
 
377
    /* Link to objfile that contains the debug symbols for this one.
378
       One is loaded if this file has an debug link to an existing
379
       debug file with the right checksum */
380
    struct objfile *separate_debug_objfile;
381
 
382
    /* If this is a separate debug object, this is used as a link to the
383
       actual executable objfile. */
384
    struct objfile *separate_debug_objfile_backlink;
385
 
386
    /* Place to stash various statistics about this objfile */
387
      OBJSTATS;
388
 
389
    /* A symtab that the C++ code uses to stash special symbols
390
       associated to namespaces.  */
391
 
392
    /* FIXME/carlton-2003-06-27: Delete this in a few years once
393
       "possible namespace symbols" go away.  */
394
    struct symtab *cp_namespace_symtab;
395
  };
396
 
397
/* Defines for the objfile flag word. */
398
 
399
/* When using mapped/remapped predigested gdb symbol information, we need
400
   a flag that indicates that we have previously done an initial symbol
401
   table read from this particular objfile.  We can't just look for the
402
   absence of any of the three symbol tables (msymbols, psymtab, symtab)
403
   because if the file has no symbols for example, none of these will
404
   exist. */
405
 
406
#define OBJF_SYMS       (1 << 1)        /* Have tried to read symbols */
407
 
408
/* When an object file has its functions reordered (currently Irix-5.2
409
   shared libraries exhibit this behaviour), we will need an expensive
410
   algorithm to locate a partial symtab or symtab via an address.
411
   To avoid this penalty for normal object files, we use this flag,
412
   whose setting is determined upon symbol table read in.  */
413
 
414
#define OBJF_REORDERED  (1 << 2)        /* Functions are reordered */
415
 
416
/* Distinguish between an objfile for a shared library and a "vanilla"
417
   objfile. (If not set, the objfile may still actually be a solib.
418
   This can happen if the user created the objfile by using the
419
   add-symbol-file command.  GDB doesn't in that situation actually
420
   check whether the file is a solib.  Rather, the target's
421
   implementation of the solib interface is responsible for setting
422
   this flag when noticing solibs used by an inferior.)  */
423
 
424
#define OBJF_SHARED     (1 << 3)        /* From a shared library */
425
 
426
/* User requested that this objfile be read in it's entirety. */
427
 
428
#define OBJF_READNOW    (1 << 4)        /* Immediate full read */
429
 
430
/* This objfile was created because the user explicitly caused it
431
   (e.g., used the add-symbol-file command).  This bit offers a way
432
   for run_command to remove old objfile entries which are no longer
433
   valid (i.e., are associated with an old inferior), but to preserve
434
   ones that the user explicitly loaded via the add-symbol-file
435
   command. */
436
 
437
#define OBJF_USERLOADED (1 << 5)        /* User loaded */
438
 
439
/* The object file that the main symbol table was loaded from (e.g. the
440
   argument to the "symbol-file" or "file" command).  */
441
 
442
extern struct objfile *symfile_objfile;
443
 
444
/* The object file that contains the runtime common minimal symbols
445
   for SunOS4. Note that this objfile has no associated BFD.  */
446
 
447
extern struct objfile *rt_common_objfile;
448
 
449
/* When we need to allocate a new type, we need to know which objfile_obstack
450
   to allocate the type on, since there is one for each objfile.  The places
451
   where types are allocated are deeply buried in function call hierarchies
452
   which know nothing about objfiles, so rather than trying to pass a
453
   particular objfile down to them, we just do an end run around them and
454
   set current_objfile to be whatever objfile we expect to be using at the
455
   time types are being allocated.  For instance, when we start reading
456
   symbols for a particular objfile, we set current_objfile to point to that
457
   objfile, and when we are done, we set it back to NULL, to ensure that we
458
   never put a type someplace other than where we are expecting to put it.
459
   FIXME:  Maybe we should review the entire type handling system and
460
   see if there is a better way to avoid this problem. */
461
 
462
extern struct objfile *current_objfile;
463
 
464
/* All known objfiles are kept in a linked list.  This points to the
465
   root of this list. */
466
 
467
extern struct objfile *object_files;
468
 
469
/* Declarations for functions defined in objfiles.c */
470
 
471
extern struct objfile *allocate_objfile (bfd *, int);
472
 
473
extern void init_entry_point_info (struct objfile *);
474
 
475
extern CORE_ADDR entry_point_address (void);
476
 
477
extern int build_objfile_section_table (struct objfile *);
478
 
479
extern void terminate_minimal_symbol_table (struct objfile *objfile);
480
 
481
extern void put_objfile_before (struct objfile *, struct objfile *);
482
 
483
extern void objfile_to_front (struct objfile *);
484
 
485
extern void unlink_objfile (struct objfile *);
486
 
487
extern void free_objfile (struct objfile *);
488
 
489
extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
490
 
491
extern void free_all_objfiles (void);
492
 
493
extern void objfile_relocate (struct objfile *, struct section_offsets *);
494
 
495
extern int have_partial_symbols (void);
496
 
497
extern int have_full_symbols (void);
498
 
499
/* This operation deletes all objfile entries that represent solibs that
500
   weren't explicitly loaded by the user, via e.g., the add-symbol-file
501
   command.
502
 */
503
extern void objfile_purge_solibs (void);
504
 
505
/* Functions for dealing with the minimal symbol table, really a misc
506
   address<->symbol mapping for things we don't have debug symbols for.  */
507
 
508
extern int have_minimal_symbols (void);
509
 
510
extern struct obj_section *find_pc_section (CORE_ADDR pc);
511
 
512
extern struct obj_section *find_pc_sect_section (CORE_ADDR pc,
513
                                                 asection * section);
514
 
515
extern int in_plt_section (CORE_ADDR, char *);
516
 
517
/* Keep a registry of per-objfile data-pointers required by other GDB
518
   modules.  */
519
 
520
extern const struct objfile_data *register_objfile_data (void);
521
extern void clear_objfile_data (struct objfile *objfile);
522
extern void set_objfile_data (struct objfile *objfile,
523
                              const struct objfile_data *data, void *value);
524
extern void *objfile_data (struct objfile *objfile,
525
                           const struct objfile_data *data);
526
 
527
 
528
/* Traverse all object files.  ALL_OBJFILES_SAFE works even if you delete
529
   the objfile during the traversal.  */
530
 
531
#define ALL_OBJFILES(obj) \
532
  for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next)
533
 
534
#define ALL_OBJFILES_SAFE(obj,nxt) \
535
  for ((obj) = object_files;       \
536
       (obj) != NULL? ((nxt)=(obj)->next,1) :0;  \
537
       (obj) = (nxt))
538
 
539
/* Traverse all symtabs in one objfile.  */
540
 
541
#define ALL_OBJFILE_SYMTABS(objfile, s) \
542
    for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
543
 
544
/* Traverse all psymtabs in one objfile.  */
545
 
546
#define ALL_OBJFILE_PSYMTABS(objfile, p) \
547
    for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)
548
 
549
/* Traverse all minimal symbols in one objfile.  */
550
 
551
#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
552
    for ((m) = (objfile) -> msymbols; DEPRECATED_SYMBOL_NAME(m) != NULL; (m)++)
553
 
554
/* Traverse all symtabs in all objfiles.  */
555
 
556
#define ALL_SYMTABS(objfile, s) \
557
  ALL_OBJFILES (objfile)         \
558
    ALL_OBJFILE_SYMTABS (objfile, s)
559
 
560
/* Traverse all symtabs in all objfiles, skipping included files
561
   (which share a blockvector with their primary symtab).  */
562
 
563
#define ALL_PRIMARY_SYMTABS(objfile, s) \
564
  ALL_OBJFILES (objfile)                \
565
    ALL_OBJFILE_SYMTABS (objfile, s)    \
566
      if ((s)->primary)
567
 
568
/* Traverse all psymtabs in all objfiles.  */
569
 
570
#define ALL_PSYMTABS(objfile, p) \
571
  ALL_OBJFILES (objfile)         \
572
    ALL_OBJFILE_PSYMTABS (objfile, p)
573
 
574
/* Traverse all minimal symbols in all objfiles.  */
575
 
576
#define ALL_MSYMBOLS(objfile, m) \
577
  ALL_OBJFILES (objfile)         \
578
    ALL_OBJFILE_MSYMBOLS (objfile, m)
579
 
580
#define ALL_OBJFILE_OSECTIONS(objfile, osect)   \
581
  for (osect = objfile->sections; osect < objfile->sections_end; osect++)
582
 
583
#define ALL_OBJSECTIONS(objfile, osect)         \
584
  ALL_OBJFILES (objfile)                        \
585
    ALL_OBJFILE_OSECTIONS (objfile, osect)
586
 
587
#define SECT_OFF_DATA(objfile) \
588
     ((objfile->sect_index_data == -1) \
589
      ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \
590
      : objfile->sect_index_data)
591
 
592
#define SECT_OFF_RODATA(objfile) \
593
     ((objfile->sect_index_rodata == -1) \
594
      ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \
595
      : objfile->sect_index_rodata)
596
 
597
#define SECT_OFF_TEXT(objfile) \
598
     ((objfile->sect_index_text == -1) \
599
      ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \
600
      : objfile->sect_index_text)
601
 
602
/* Sometimes the .bss section is missing from the objfile, so we don't
603
   want to die here. Let the users of SECT_OFF_BSS deal with an
604
   uninitialized section index. */
605
#define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
606
 
607
#endif /* !defined (OBJFILES_H) */

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