gdb/objfiles.h

   1 /* Definitions for symbol file management in GDB.
   2
   3    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   4    2001, 2002, 2003, 2004 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 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #if !defined (OBJFILES_H)
  24 #define OBJFILES_H
  25
  26 #include "gdb_obstack.h"        /* For obstack internals.  */
  27 #include "symfile.h"            /* For struct psymbol_allocation_list */
  28
  29 struct bcache;
  30 struct htab;
  31 struct symtab;
  32 struct objfile_data;
  33
  34 /* This structure maintains information on a per-objfile basis about the
  35    "entry point" of the objfile, and the scope within which the entry point
  36    exists.  It is possible that gdb will see more than one objfile that is
  37    executable, each with its own entry point.
  38
  39    For example, for dynamically linked executables in SVR4, the dynamic linker
  40    code is contained within the shared C library, which is actually executable
  41    and is run by the kernel first when an exec is done of a user executable
  42    that is dynamically linked.  The dynamic linker within the shared C library
  43    then maps in the various program segments in the user executable and jumps
  44    to the user executable's recorded entry point, as if the call had been made
  45    directly by the kernel.
  46
  47    The traditional gdb method of using this info was to use the
  48    recorded entry point to set the entry-file's lowpc and highpc from
  49    the debugging information, where these values are the starting
  50    address (inclusive) and ending address (exclusive) of the
  51    instruction space in the executable which correspond to the
  52    "startup file", I.E. crt0.o in most cases.  This file is assumed to
  53    be a startup file and frames with pc's inside it are treated as
  54    nonexistent.  Setting these variables is necessary so that
  55    backtraces do not fly off the bottom of the stack.
  56
  57    NOTE: cagney/2003-09-09: It turns out that this "traditional"
  58    method doesn't work.  Corinna writes: ``It turns out that the call
  59    to test for "inside entry file" destroys a meaningful backtrace
  60    under some conditions.  E. g. the backtrace tests in the asm-source
  61    testcase are broken for some targets.  In this test the functions
  62    are all implemented as part of one file and the testcase is not
  63    necessarily linked with a start file (depending on the target).
  64    What happens is, that the first frame is printed normaly and
  65    following frames are treated as being inside the enttry file then.
  66    This way, only the #0 frame is printed in the backtrace output.''
  67    Ref "frame.c" "NOTE: vinschen/2003-04-01".
  68
  69    Gdb also supports an alternate method to avoid running off the bottom
  70    of the stack.
  71
  72    There are two frames that are "special", the frame for the function
  73    containing the process entry point, since it has no predecessor frame,
  74    and the frame for the function containing the user code entry point
  75    (the main() function), since all the predecessor frames are for the
  76    process startup code.  Since we have no guarantee that the linked
  77    in startup modules have any debugging information that gdb can use,
  78    we need to avoid following frame pointers back into frames that might
  79    have been built in the startup code, as we might get hopelessly
  80    confused.  However, we almost always have debugging information
  81    available for main().
  82
  83    These variables are used to save the range of PC values which are
  84    valid within the main() function and within the function containing
  85    the process entry point.  If we always consider the frame for
  86    main() as the outermost frame when debugging user code, and the
  87    frame for the process entry point function as the outermost frame
  88    when debugging startup code, then all we have to do is have
  89    DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's
  90    current PC is within the range specified by these variables.  In
  91    essence, we set "ceilings" in the frame chain beyond which we will
  92    not proceed when following the frame chain back up the stack.
  93
  94    A nice side effect is that we can still debug startup code without
  95    running off the end of the frame chain, assuming that we have usable
  96    debugging information in the startup modules, and if we choose to not
  97    use the block at main, or can't find it for some reason, everything
  98    still works as before.  And if we have no startup code debugging
  99    information but we do have usable information for main(), backtraces
 100    from user code don't go wandering off into the startup code.  */
 101
 102 struct entry_info
 103   {
 104
 105     /* The value we should use for this objects entry point.
 106        The illegal/unknown value needs to be something other than 0, ~0
 107        for instance, which is much less likely than 0. */
 108
 109     CORE_ADDR entry_point;
 110
 111 #define INVALID_ENTRY_POINT (~0)        /* ~0 will not be in any file, we hope.  */
 112
 113     /* Start (inclusive) and end (exclusive) of function containing the
 114        entry point. */
 115
 116     CORE_ADDR entry_func_lowpc;
 117     CORE_ADDR entry_func_highpc;
 118
 119     /* Start (inclusive) and end (exclusive) of the user code main() function. */
 120
 121     CORE_ADDR main_func_lowpc;
 122     CORE_ADDR main_func_highpc;
 123
 124 /* Use these values when any of the above ranges is invalid.  */
 125
 126 /* We use these values because it guarantees that there is no number that is
 127    both >= LOWPC && < HIGHPC.  It is also highly unlikely that 3 is a valid
 128    module or function start address (as opposed to 0).  */
 129
 130 #define INVALID_ENTRY_LOWPC (3)
 131 #define INVALID_ENTRY_HIGHPC (1)
 132
 133   };
 134
 135 /* Sections in an objfile.
 136
 137    It is strange that we have both this notion of "sections"
 138    and the one used by section_offsets.  Section as used
 139    here, (currently at least) means a BFD section, and the sections
 140    are set up from the BFD sections in allocate_objfile.
 141
 142    The sections in section_offsets have their meaning determined by
 143    the symbol format, and they are set up by the sym_offsets function
 144    for that symbol file format.
 145
 146    I'm not sure this could or should be changed, however.  */
 147
 148 struct obj_section
 149   {
 150     CORE_ADDR addr;             /* lowest address in section */
 151     CORE_ADDR endaddr;          /* 1+highest address in section */
 152
 153     /* This field is being used for nefarious purposes by syms_from_objfile.
 154        It is said to be redundant with section_offsets; it's not really being
 155        used that way, however, it's some sort of hack I don't understand
 156        and am not going to try to eliminate (yet, anyway).  FIXME.
 157
 158        It was documented as "offset between (end)addr and actual memory
 159        addresses", but that's not true; addr & endaddr are actual memory
 160        addresses.  */
 161     CORE_ADDR offset;
 162
 163     struct bfd_section *the_bfd_section;        /* BFD section pointer */
 164
 165     /* Objfile this section is part of.  */
 166     struct objfile *objfile;
 167
 168     /* True if this "overlay section" is mapped into an "overlay region". */
 169     int ovly_mapped;
 170   };
 171
 172 /* An import entry contains information about a symbol that
 173    is used in this objfile but not defined in it, and so needs
 174    to be imported from some other objfile */
 175 /* Currently we just store the name; no attributes. 1997-08-05 */
 176 typedef char *ImportEntry;
 177
 178
 179 /* An export entry contains information about a symbol that
 180    is defined in this objfile and available for use in other
 181    objfiles */
 182 typedef struct
 183   {
 184     char *name;                 /* name of exported symbol */
 185     int address;                /* offset subject to relocation */
 186     /* Currently no other attributes 1997-08-05 */
 187   }
 188 ExportEntry;
 189
 190
 191 /* The "objstats" structure provides a place for gdb to record some
 192    interesting information about its internal state at runtime, on a
 193    per objfile basis, such as information about the number of symbols
 194    read, size of string table (if any), etc. */
 195
 196 struct objstats
 197   {
 198     int n_minsyms;              /* Number of minimal symbols read */
 199     int n_psyms;                /* Number of partial symbols read */
 200     int n_syms;                 /* Number of full symbols read */
 201     int n_stabs;                /* Number of ".stabs" read (if applicable) */
 202     int n_types;                /* Number of types */
 203     int sz_strtab;              /* Size of stringtable, (if applicable) */
 204   };
 205
 206 #define OBJSTAT(objfile, expr) (objfile -> stats.expr)
 207 #define OBJSTATS struct objstats stats
 208 extern void print_objfile_statistics (void);
 209 extern void print_symbol_bcache_statistics (void);
 210
 211 /* Number of entries in the minimal symbol hash table.  */
 212 #define MINIMAL_SYMBOL_HASH_SIZE 2039
 213
 214 /* Master structure for keeping track of each file from which
 215    gdb reads symbols.  There are several ways these get allocated: 1.
 216    The main symbol file, symfile_objfile, set by the symbol-file command,
 217    2.  Additional symbol files added by the add-symbol-file command,
 218    3.  Shared library objfiles, added by ADD_SOLIB,  4.  symbol files
 219    for modules that were loaded when GDB attached to a remote system
 220    (see remote-vx.c).  */
 221
 222 struct objfile
 223   {
 224
 225     /* All struct objfile's are chained together by their next pointers.
 226        The global variable "object_files" points to the first link in this
 227        chain.
 228
 229        FIXME:  There is a problem here if the objfile is reusable, and if
 230        multiple users are to be supported.  The problem is that the objfile
 231        list is linked through a member of the objfile struct itself, which
 232        is only valid for one gdb process.  The list implementation needs to
 233        be changed to something like:
 234
 235        struct list {struct list *next; struct objfile *objfile};
 236
 237        where the list structure is completely maintained separately within
 238        each gdb process. */
 239
 240     struct objfile *next;
 241
 242     /* The object file's name, tilde-expanded and absolute.
 243        Malloc'd; free it if you free this struct.  */
 244
 245     char *name;
 246
 247     /* Some flag bits for this objfile. */
 248
 249     unsigned short flags;
 250
 251     /* Each objfile points to a linked list of symtabs derived from this file,
 252        one symtab structure for each compilation unit (source file).  Each link
 253        in the symtab list contains a backpointer to this objfile. */
 254
 255     struct symtab *symtabs;
 256
 257     /* Each objfile points to a linked list of partial symtabs derived from
 258        this file, one partial symtab structure for each compilation unit
 259        (source file). */
 260
 261     struct partial_symtab *psymtabs;
 262
 263     /* List of freed partial symtabs, available for re-use */
 264
 265     struct partial_symtab *free_psymtabs;
 266
 267     /* The object file's BFD.  Can be null if the objfile contains only
 268        minimal symbols, e.g. the run time common symbols for SunOS4.  */
 269
 270     bfd *obfd;
 271
 272     /* The modification timestamp of the object file, as of the last time
 273        we read its symbols.  */
 274
 275     long mtime;
 276
 277     /* Obstack to hold objects that should be freed when we load a new symbol
 278        table from this object file. */
 279
 280     struct obstack objfile_obstack;
 281
 282     /* A byte cache where we can stash arbitrary "chunks" of bytes that
 283        will not change. */
 284
 285     struct bcache *psymbol_cache;       /* Byte cache for partial syms */
 286     struct bcache *macro_cache;          /* Byte cache for macros */
 287
 288     /* Hash table for mapping symbol names to demangled names.  Each
 289        entry in the hash table is actually two consecutive strings,
 290        both null-terminated; the first one is a mangled or linkage
 291        name, and the second is the demangled name or just a zero byte
 292        if the name doesn't demangle.  */
 293     struct htab *demangled_names_hash;
 294
 295     /* Vectors of all partial symbols read in from file.  The actual data
 296        is stored in the objfile_obstack. */
 297
 298     struct psymbol_allocation_list global_psymbols;
 299     struct psymbol_allocation_list static_psymbols;
 300
 301     /* Each file contains a pointer to an array of minimal symbols for all
 302        global symbols that are defined within the file.  The array is terminated
 303        by a "null symbol", one that has a NULL pointer for the name and a zero
 304        value for the address.  This makes it easy to walk through the array
 305        when passed a pointer to somewhere in the middle of it.  There is also
 306        a count of the number of symbols, which does not include the terminating
 307        null symbol.  The array itself, as well as all the data that it points
 308        to, should be allocated on the objfile_obstack for this file. */
 309
 310     struct minimal_symbol *msymbols;
 311     int minimal_symbol_count;
 312
 313     /* This is a hash table used to index the minimal symbols by name.  */
 314
 315     struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
 316
 317     /* This hash table is used to index the minimal symbols by their
 318        demangled names.  */
 319
 320     struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
 321
 322     /* For object file formats which don't specify fundamental types, gdb
 323        can create such types.  For now, it maintains a vector of pointers
 324        to these internally created fundamental types on a per objfile basis,
 325        however it really should ultimately keep them on a per-compilation-unit
 326        basis, to account for linkage-units that consist of a number of
 327        compilation units that may have different fundamental types, such as
 328        linking C modules with ADA modules, or linking C modules that are
 329        compiled with 32-bit ints with C modules that are compiled with 64-bit
 330        ints (not inherently evil with a smarter linker). */
 331
 332     struct type **fundamental_types;
 333
 334     /* The mmalloc() malloc-descriptor for this objfile if we are using
 335        the memory mapped malloc() package to manage storage for this objfile's
 336        data.  NULL if we are not. */
 337
 338     void *md;
 339
 340     /* The file descriptor that was used to obtain the mmalloc descriptor
 341        for this objfile.  If we call mmalloc_detach with the malloc descriptor
 342        we should then close this file descriptor. */
 343
 344     int mmfd;
 345
 346     /* Structure which keeps track of functions that manipulate objfile's
 347        of the same type as this objfile.  I.E. the function to read partial
 348        symbols for example.  Note that this structure is in statically
 349        allocated memory, and is shared by all objfiles that use the
 350        object module reader of this type. */
 351
 352     struct sym_fns *sf;
 353
 354     /* The per-objfile information about the entry point, the scope (file/func)
 355        containing the entry point, and the scope of the user's main() func. */
 356
 357     struct entry_info ei;
 358
 359     /* Information about stabs.  Will be filled in with a dbx_symfile_info
 360        struct by those readers that need it. */
 361
 362     struct dbx_symfile_info *sym_stab_info;
 363
 364     /* Hook for information for use by the symbol reader (currently used
 365        for information shared by sym_init and sym_read).  It is
 366        typically a pointer to malloc'd memory.  The symbol reader's finish
 367        function is responsible for freeing the memory thusly allocated.  */
 368
 369     void *sym_private;
 370
 371     /* Hook for target-architecture-specific information.  This must
 372        point to memory allocated on one of the obstacks in this objfile,
 373        so that it gets freed automatically when reading a new object
 374        file. */
 375
 376     void *obj_private;
 377
 378     /* Per objfile data-pointers required by other GDB modules.  */
 379     /* FIXME: kettenis/20030711: This mechanism could replace
 380        sym_stab_info, sym_private and obj_private entirely.  */
 381
 382     void **data;
 383     unsigned num_data;
 384
 385     /* Set of relocation offsets to apply to each section.
 386        Currently on the objfile_obstack (which makes no sense, but I'm
 387        not sure it's harming anything).
 388
 389        These offsets indicate that all symbols (including partial and
 390        minimal symbols) which have been read have been relocated by this
 391        much.  Symbols which are yet to be read need to be relocated by
 392        it.  */
 393
 394     struct section_offsets *section_offsets;
 395     int num_sections;
 396
 397     /* Indexes in the section_offsets array. These are initialized by the
 398        *_symfile_offsets() family of functions (som_symfile_offsets,
 399        xcoff_symfile_offsets, default_symfile_offsets). In theory they
 400        should correspond to the section indexes used by bfd for the
 401        current objfile. The exception to this for the time being is the
 402        SOM version. */
 403
 404     int sect_index_text;
 405     int sect_index_data;
 406     int sect_index_bss;
 407     int sect_index_rodata;
 408
 409     /* These pointers are used to locate the section table, which
 410        among other things, is used to map pc addresses into sections.
 411        SECTIONS points to the first entry in the table, and
 412        SECTIONS_END points to the first location past the last entry
 413        in the table.  Currently the table is stored on the
 414        objfile_obstack (which makes no sense, but I'm not sure it's
 415        harming anything).  */
 416
 417     struct obj_section
 418      *sections, *sections_end;
 419
 420     /* Imported symbols */
 421     /* FIXME: ezannoni 2004-02-10: This is just SOM (HP) specific (see
 422        somread.c). It should not pollute generic objfiles.  */
 423     ImportEntry *import_list;
 424     int import_list_size;
 425
 426     /* Exported symbols */
 427     /* FIXME: ezannoni 2004-02-10: This is just SOM (HP) specific (see
 428        somread.c). It should not pollute generic objfiles.  */
 429     ExportEntry *export_list;
 430     int export_list_size;
 431
 432     /* Link to objfile that contains the debug symbols for this one.
 433        One is loaded if this file has an debug link to an existing
 434        debug file with the right checksum */
 435     struct objfile *separate_debug_objfile;
 436
 437     /* If this is a separate debug object, this is used as a link to the
 438        actual executable objfile. */
 439     struct objfile *separate_debug_objfile_backlink;
 440
 441     /* Place to stash various statistics about this objfile */
 442       OBJSTATS;
 443
 444     /* A symtab that the C++ code uses to stash special symbols
 445        associated to namespaces.  */
 446
 447     /* FIXME/carlton-2003-06-27: Delete this in a few years once
 448        "possible namespace symbols" go away.  */
 449     struct symtab *cp_namespace_symtab;
 450   };
 451
 452 /* Defines for the objfile flag word. */
 453
 454 /* When using mapped/remapped predigested gdb symbol information, we need
 455    a flag that indicates that we have previously done an initial symbol
 456    table read from this particular objfile.  We can't just look for the
 457    absence of any of the three symbol tables (msymbols, psymtab, symtab)
 458    because if the file has no symbols for example, none of these will
 459    exist. */
 460
 461 #define OBJF_SYMS       (1 << 1)        /* Have tried to read symbols */
 462
 463 /* When an object file has its functions reordered (currently Irix-5.2
 464    shared libraries exhibit this behaviour), we will need an expensive
 465    algorithm to locate a partial symtab or symtab via an address.
 466    To avoid this penalty for normal object files, we use this flag,
 467    whose setting is determined upon symbol table read in.  */
 468
 469 #define OBJF_REORDERED  (1 << 2)        /* Functions are reordered */
 470
 471 /* Distinguish between an objfile for a shared library and a "vanilla"
 472    objfile. (If not set, the objfile may still actually be a solib.
 473    This can happen if the user created the objfile by using the
 474    add-symbol-file command.  GDB doesn't in that situation actually
 475    check whether the file is a solib.  Rather, the target's
 476    implementation of the solib interface is responsible for setting
 477    this flag when noticing solibs used by an inferior.)  */
 478
 479 #define OBJF_SHARED     (1 << 3)        /* From a shared library */
 480
 481 /* User requested that this objfile be read in it's entirety. */
 482
 483 #define OBJF_READNOW    (1 << 4)        /* Immediate full read */
 484
 485 /* This objfile was created because the user explicitly caused it
 486    (e.g., used the add-symbol-file command).  This bit offers a way
 487    for run_command to remove old objfile entries which are no longer
 488    valid (i.e., are associated with an old inferior), but to preserve
 489    ones that the user explicitly loaded via the add-symbol-file
 490    command. */
 491
 492 #define OBJF_USERLOADED (1 << 5)        /* User loaded */
 493
 494 /* The object file that the main symbol table was loaded from (e.g. the
 495    argument to the "symbol-file" or "file" command).  */
 496
 497 extern struct objfile *symfile_objfile;
 498
 499 /* The object file that contains the runtime common minimal symbols
 500    for SunOS4. Note that this objfile has no associated BFD.  */
 501
 502 extern struct objfile *rt_common_objfile;
 503
 504 /* When we need to allocate a new type, we need to know which objfile_obstack
 505    to allocate the type on, since there is one for each objfile.  The places
 506    where types are allocated are deeply buried in function call hierarchies
 507    which know nothing about objfiles, so rather than trying to pass a
 508    particular objfile down to them, we just do an end run around them and
 509    set current_objfile to be whatever objfile we expect to be using at the
 510    time types are being allocated.  For instance, when we start reading
 511    symbols for a particular objfile, we set current_objfile to point to that
 512    objfile, and when we are done, we set it back to NULL, to ensure that we
 513    never put a type someplace other than where we are expecting to put it.
 514    FIXME:  Maybe we should review the entire type handling system and
 515    see if there is a better way to avoid this problem. */
 516
 517 extern struct objfile *current_objfile;
 518
 519 /* All known objfiles are kept in a linked list.  This points to the
 520    root of this list. */
 521
 522 extern struct objfile *object_files;
 523
 524 /* Declarations for functions defined in objfiles.c */
 525
 526 extern struct objfile *allocate_objfile (bfd *, int);
 527
 528 extern void init_entry_point_info (struct objfile *);
 529
 530 extern CORE_ADDR entry_point_address (void);
 531
 532 extern int build_objfile_section_table (struct objfile *);
 533
 534 extern void terminate_minimal_symbol_table (struct objfile *objfile);
 535
 536 extern void put_objfile_before (struct objfile *, struct objfile *);
 537
 538 extern void objfile_to_front (struct objfile *);
 539
 540 extern void unlink_objfile (struct objfile *);
 541
 542 extern void free_objfile (struct objfile *);
 543
 544 extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
 545
 546 extern void free_all_objfiles (void);
 547
 548 extern void objfile_relocate (struct objfile *, struct section_offsets *);
 549
 550 extern int have_partial_symbols (void);
 551
 552 extern int have_full_symbols (void);
 553
 554 /* This operation deletes all objfile entries that represent solibs that
 555    weren't explicitly loaded by the user, via e.g., the add-symbol-file
 556    command.
 557  */
 558 extern void objfile_purge_solibs (void);
 559
 560 /* Functions for dealing with the minimal symbol table, really a misc
 561    address<->symbol mapping for things we don't have debug symbols for.  */
 562
 563 extern int have_minimal_symbols (void);
 564
 565 extern struct obj_section *find_pc_section (CORE_ADDR pc);
 566
 567 extern struct obj_section *find_pc_sect_section (CORE_ADDR pc,
 568                                                  asection * section);
 569
 570 extern int in_plt_section (CORE_ADDR, char *);
 571
 572 extern int is_in_import_list (char *, struct objfile *);
 573
 574 /* Keep a registry of per-objfile data-pointers required by other GDB
 575    modules.  */
 576
 577 extern const struct objfile_data *register_objfile_data (void);
 578 extern void clear_objfile_data (struct objfile *objfile);
 579 extern void set_objfile_data (struct objfile *objfile,
 580                               const struct objfile_data *data, void *value);
 581 extern void *objfile_data (struct objfile *objfile,
 582                            const struct objfile_data *data);
 583 \f
 584
 585 /* Traverse all object files.  ALL_OBJFILES_SAFE works even if you delete
 586    the objfile during the traversal.  */
 587
 588 #define ALL_OBJFILES(obj) \
 589   for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next)
 590
 591 #define ALL_OBJFILES_SAFE(obj,nxt) \
 592   for ((obj) = object_files;       \
 593        (obj) != NULL? ((nxt)=(obj)->next,1) :0; \
 594        (obj) = (nxt))
 595
 596 /* Traverse all symtabs in one objfile.  */
 597
 598 #define ALL_OBJFILE_SYMTABS(objfile, s) \
 599     for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
 600
 601 /* Traverse all psymtabs in one objfile.  */
 602
 603 #define ALL_OBJFILE_PSYMTABS(objfile, p) \
 604     for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)
 605
 606 /* Traverse all minimal symbols in one objfile.  */
 607
 608 #define ALL_OBJFILE_MSYMBOLS(objfile, m) \
 609     for ((m) = (objfile) -> msymbols; DEPRECATED_SYMBOL_NAME(m) != NULL; (m)++)
 610
 611 /* Traverse all symtabs in all objfiles.  */
 612
 613 #define ALL_SYMTABS(objfile, s) \
 614   ALL_OBJFILES (objfile)         \
 615     ALL_OBJFILE_SYMTABS (objfile, s)
 616
 617 /* Traverse all psymtabs in all objfiles.  */
 618
 619 #define ALL_PSYMTABS(objfile, p) \
 620   ALL_OBJFILES (objfile)         \
 621     ALL_OBJFILE_PSYMTABS (objfile, p)
 622
 623 /* Traverse all minimal symbols in all objfiles.  */
 624
 625 #define ALL_MSYMBOLS(objfile, m) \
 626   ALL_OBJFILES (objfile)         \
 627     ALL_OBJFILE_MSYMBOLS (objfile, m)
 628
 629 #define ALL_OBJFILE_OSECTIONS(objfile, osect)   \
 630   for (osect = objfile->sections; osect < objfile->sections_end; osect++)
 631
 632 #define ALL_OBJSECTIONS(objfile, osect)         \
 633   ALL_OBJFILES (objfile)                        \
 634     ALL_OBJFILE_OSECTIONS (objfile, osect)
 635
 636 #define SECT_OFF_DATA(objfile) \
 637      ((objfile->sect_index_data == -1) \
 638       ? (internal_error (__FILE__, __LINE__, "sect_index_data not initialized"), -1) \
 639       : objfile->sect_index_data)
 640
 641 #define SECT_OFF_RODATA(objfile) \
 642      ((objfile->sect_index_rodata == -1) \
 643       ? (internal_error (__FILE__, __LINE__, "sect_index_rodata not initialized"), -1) \
 644       : objfile->sect_index_rodata)
 645
 646 #define SECT_OFF_TEXT(objfile) \
 647      ((objfile->sect_index_text == -1) \
 648       ? (internal_error (__FILE__, __LINE__, "sect_index_text not initialized"), -1) \
 649       : objfile->sect_index_text)
 650
 651 /* Sometimes the .bss section is missing from the objfile, so we don't
 652    want to die here. Let the users of SECT_OFF_BSS deal with an
 653    uninitialized section index. */
 654 #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
 655
 656 #endif /* !defined (OBJFILES_H) */