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1 227 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, 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
 
537
 
538
/* Traverse all object files in the current program space.
539
   ALL_OBJFILES_SAFE works even if you delete the objfile during the
540
   traversal.  */
541
 
542
/* Traverse all object files in program space SS.  */
543
 
544
#define ALL_PSPACE_OBJFILES(ss, obj)                                    \
545
  for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next)        \
546
 
547
#define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt)          \
548
  for ((obj) = ss->objfiles;                    \
549
       (obj) != NULL? ((nxt)=(obj)->next,1) :0;  \
550
       (obj) = (nxt))
551
 
552
#define ALL_OBJFILES(obj)                           \
553
  for ((obj) = current_program_space->objfiles; \
554
       (obj) != NULL;                               \
555
       (obj) = (obj)->next)
556
 
557
#define ALL_OBJFILES_SAFE(obj,nxt)                      \
558
  for ((obj) = current_program_space->objfiles; \
559
       (obj) != NULL? ((nxt)=(obj)->next,1) :0;  \
560
       (obj) = (nxt))
561
 
562
/* Traverse all symtabs in one objfile.  */
563
 
564
#define ALL_OBJFILE_SYMTABS(objfile, s) \
565
    for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
566
 
567
/* Traverse all psymtabs in one objfile.  */
568
 
569
#define ALL_OBJFILE_PSYMTABS(objfile, p) \
570
    for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)
571
 
572
/* Traverse all minimal symbols in one objfile.  */
573
 
574
#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
575
    for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++)
576
 
577
/* Traverse all symtabs in all objfiles in the current symbol
578
   space.  */
579
 
580
#define ALL_SYMTABS(objfile, s) \
581
  ALL_OBJFILES (objfile)         \
582
    ALL_OBJFILE_SYMTABS (objfile, s)
583
 
584
#define ALL_PSPACE_SYMTABS(ss, objfile, s)              \
585
  ALL_PSPACE_OBJFILES (ss, objfile)                     \
586
    ALL_OBJFILE_SYMTABS (objfile, s)
587
 
588
/* Traverse all symtabs in all objfiles in the current program space,
589
   skipping included files (which share a blockvector with their
590
   primary symtab).  */
591
 
592
#define ALL_PRIMARY_SYMTABS(objfile, s) \
593
  ALL_OBJFILES (objfile)                \
594
    ALL_OBJFILE_SYMTABS (objfile, s)    \
595
      if ((s)->primary)
596
 
597
#define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s)  \
598
  ALL_PSPACE_OBJFILES (ss, objfile)                     \
599
    ALL_OBJFILE_SYMTABS (objfile, s)                    \
600
      if ((s)->primary)
601
 
602
/* Traverse all psymtabs in all objfiles in the current symbol
603
   space.  */
604
 
605
#define ALL_PSYMTABS(objfile, p) \
606
  ALL_OBJFILES (objfile)         \
607
    ALL_OBJFILE_PSYMTABS (objfile, p)
608
 
609
#define ALL_PSPACE_PSYMTABS(ss, objfile, p)             \
610
  ALL_PSPACE_OBJFILES (ss, objfile)                     \
611
    ALL_OBJFILE_PSYMTABS (objfile, p)
612
 
613
/* Traverse all minimal symbols in all objfiles in the current symbol
614
   space.  */
615
 
616
#define ALL_MSYMBOLS(objfile, m) \
617
  ALL_OBJFILES (objfile)         \
618
    ALL_OBJFILE_MSYMBOLS (objfile, m)
619
 
620
#define ALL_OBJFILE_OSECTIONS(objfile, osect)   \
621
  for (osect = objfile->sections; osect < objfile->sections_end; osect++)
622
 
623
#define ALL_OBJSECTIONS(objfile, osect)         \
624
  ALL_OBJFILES (objfile)                        \
625
    ALL_OBJFILE_OSECTIONS (objfile, osect)
626
 
627
#define SECT_OFF_DATA(objfile) \
628
     ((objfile->sect_index_data == -1) \
629
      ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \
630
      : objfile->sect_index_data)
631
 
632
#define SECT_OFF_RODATA(objfile) \
633
     ((objfile->sect_index_rodata == -1) \
634
      ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \
635
      : objfile->sect_index_rodata)
636
 
637
#define SECT_OFF_TEXT(objfile) \
638
     ((objfile->sect_index_text == -1) \
639
      ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \
640
      : objfile->sect_index_text)
641
 
642
/* Sometimes the .bss section is missing from the objfile, so we don't
643
   want to die here. Let the users of SECT_OFF_BSS deal with an
644
   uninitialized section index. */
645
#define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
646
 
647
/* Answer whether there is more than one object file loaded.  */
648
 
649
#define MULTI_OBJFILE_P() (object_files && object_files->next)
650
 
651
#endif /* !defined (OBJFILES_H) */

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