1 /* Read ELF (Executable and Linking Format) object files for GDB.
3 Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
6 Written by Fred Fish at Cygnus Support.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "gdb_string.h"
27 #include "elf/common.h"
28 #include "elf/internal.h"
34 #include "stabsread.h"
35 #include "gdb-stabs.h"
36 #include "complaints.h"
39 extern void _initialize_elfread (void);
41 /* The struct elfinfo is available only during ELF symbol table and
42 psymtab reading. It is destroyed at the completion of psymtab-reading.
43 It's local to elf_symfile_read. */
47 asection
*stabsect
; /* Section pointer for .stab section */
48 asection
*stabindexsect
; /* Section pointer for .stab.index section */
49 asection
*mdebugsect
; /* Section pointer for .mdebug section */
52 static void free_elfinfo (void *);
54 /* Locate the segments in ABFD. */
56 static struct symfile_segment_data
*
57 elf_symfile_segments (bfd
*abfd
)
59 Elf_Internal_Phdr
*phdrs
, **segments
;
61 int num_phdrs
, num_segments
, num_sections
, i
;
63 struct symfile_segment_data
*data
;
65 phdrs_size
= bfd_get_elf_phdr_upper_bound (abfd
);
69 phdrs
= alloca (phdrs_size
);
70 num_phdrs
= bfd_get_elf_phdrs (abfd
, phdrs
);
75 segments
= alloca (sizeof (Elf_Internal_Phdr
*) * num_phdrs
);
76 for (i
= 0; i
< num_phdrs
; i
++)
77 if (phdrs
[i
].p_type
== PT_LOAD
)
78 segments
[num_segments
++] = &phdrs
[i
];
80 if (num_segments
== 0)
83 data
= XZALLOC (struct symfile_segment_data
);
84 data
->num_segments
= num_segments
;
85 data
->segment_bases
= XCALLOC (num_segments
, CORE_ADDR
);
86 data
->segment_sizes
= XCALLOC (num_segments
, CORE_ADDR
);
88 for (i
= 0; i
< num_segments
; i
++)
90 data
->segment_bases
[i
] = segments
[i
]->p_vaddr
;
91 data
->segment_sizes
[i
] = segments
[i
]->p_memsz
;
94 num_sections
= bfd_count_sections (abfd
);
95 data
->segment_info
= XCALLOC (num_sections
, int);
97 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
102 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
105 vma
= bfd_get_section_vma (abfd
, sect
);
107 for (j
= 0; j
< num_segments
; j
++)
108 if (segments
[j
]->p_memsz
> 0
109 && vma
>= segments
[j
]->p_vaddr
110 && vma
< segments
[j
]->p_vaddr
+ segments
[j
]->p_memsz
)
112 data
->segment_info
[i
] = j
+ 1;
116 if (bfd_get_section_size (sect
) > 0 && j
== num_segments
)
117 warning (_("Loadable segment \"%s\" outside of ELF segments"),
118 bfd_section_name (abfd
, sect
));
124 /* We are called once per section from elf_symfile_read. We
125 need to examine each section we are passed, check to see
126 if it is something we are interested in processing, and
127 if so, stash away some access information for the section.
129 For now we recognize the dwarf debug information sections and
130 line number sections from matching their section names. The
131 ELF definition is no real help here since it has no direct
132 knowledge of DWARF (by design, so any debugging format can be
135 We also recognize the ".stab" sections used by the Sun compilers
136 released with Solaris 2.
138 FIXME: The section names should not be hardwired strings (what
139 should they be? I don't think most object file formats have enough
140 section flags to specify what kind of debug section it is
144 elf_locate_sections (bfd
*ignore_abfd
, asection
*sectp
, void *eip
)
148 ei
= (struct elfinfo
*) eip
;
149 if (strcmp (sectp
->name
, ".stab") == 0)
151 ei
->stabsect
= sectp
;
153 else if (strcmp (sectp
->name
, ".stab.index") == 0)
155 ei
->stabindexsect
= sectp
;
157 else if (strcmp (sectp
->name
, ".mdebug") == 0)
159 ei
->mdebugsect
= sectp
;
163 static struct minimal_symbol
*
164 record_minimal_symbol (char *name
, CORE_ADDR address
,
165 enum minimal_symbol_type ms_type
,
166 asection
*bfd_section
, struct objfile
*objfile
)
168 if (ms_type
== mst_text
|| ms_type
== mst_file_text
)
169 address
= gdbarch_smash_text_address (current_gdbarch
, address
);
171 return prim_record_minimal_symbol_and_info
172 (name
, address
, ms_type
, NULL
, bfd_section
->index
, bfd_section
, objfile
);
179 elf_symtab_read -- read the symbol table of an ELF file
183 void elf_symtab_read (struct objfile *objfile, int dynamic,
184 long number_of_symbols, asymbol **symbol_table)
188 Given an objfile, a symbol table, and a flag indicating whether the
189 symbol table contains dynamic symbols, add all the global function
190 and data symbols to the minimal symbol table.
192 In stabs-in-ELF, as implemented by Sun, there are some local symbols
193 defined in the ELF symbol table, which can be used to locate
194 the beginnings of sections from each ".o" file that was linked to
195 form the executable objfile. We gather any such info and record it
196 in data structures hung off the objfile's private data.
201 elf_symtab_read (struct objfile
*objfile
, int dynamic
,
202 long number_of_symbols
, asymbol
**symbol_table
)
209 enum minimal_symbol_type ms_type
;
210 /* If sectinfo is nonNULL, it contains section info that should end up
211 filed in the objfile. */
212 struct stab_section_info
*sectinfo
= NULL
;
213 /* If filesym is nonzero, it points to a file symbol, but we haven't
214 seen any section info for it yet. */
215 asymbol
*filesym
= 0;
216 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
217 /* Name of filesym, as saved on the objfile_obstack. */
218 char *filesymname
= obsavestring ("", 0, &objfile
->objfile_obstack
);
220 struct dbx_symfile_info
*dbx
= objfile
->deprecated_sym_stab_info
;
221 int stripped
= (bfd_get_symcount (objfile
->obfd
) == 0);
223 for (i
= 0; i
< number_of_symbols
; i
++)
225 sym
= symbol_table
[i
];
226 if (sym
->name
== NULL
|| *sym
->name
== '\0')
228 /* Skip names that don't exist (shouldn't happen), or names
229 that are null strings (may happen). */
233 /* Skip "special" symbols, e.g. ARM mapping symbols. These are
234 symbols which do not correspond to objects in the symbol table,
235 but have some other target-specific meaning. */
236 if (bfd_is_target_special_symbol (objfile
->obfd
, sym
))
239 offset
= ANOFFSET (objfile
->section_offsets
, sym
->section
->index
);
241 && sym
->section
== &bfd_und_section
242 && (sym
->flags
& BSF_FUNCTION
))
244 struct minimal_symbol
*msym
;
246 /* Symbol is a reference to a function defined in
248 If its value is non zero then it is usually the address
249 of the corresponding entry in the procedure linkage table,
250 plus the desired section offset.
251 If its value is zero then the dynamic linker has to resolve
252 the symbol. We are unable to find any meaningful address
253 for this symbol in the executable file, so we skip it. */
254 symaddr
= sym
->value
;
258 msym
= record_minimal_symbol
259 ((char *) sym
->name
, symaddr
,
260 mst_solib_trampoline
, sym
->section
, objfile
);
261 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
263 msym
->filename
= filesymname
;
268 /* If it is a nonstripped executable, do not enter dynamic
269 symbols, as the dynamic symbol table is usually a subset
270 of the main symbol table. */
271 if (dynamic
&& !stripped
)
273 if (sym
->flags
& BSF_FILE
)
275 /* STT_FILE debugging symbol that helps stabs-in-elf debugging.
276 Chain any old one onto the objfile; remember new sym. */
277 if (sectinfo
!= NULL
)
279 sectinfo
->next
= dbx
->stab_section_info
;
280 dbx
->stab_section_info
= sectinfo
;
284 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
286 obsavestring ((char *) filesym
->name
, strlen (filesym
->name
),
287 &objfile
->objfile_obstack
);
290 else if (sym
->flags
& BSF_SECTION_SYM
)
292 else if (sym
->flags
& (BSF_GLOBAL
| BSF_LOCAL
| BSF_WEAK
))
294 struct minimal_symbol
*msym
;
296 /* Select global/local/weak symbols. Note that bfd puts abs
297 symbols in their own section, so all symbols we are
298 interested in will have a section. */
299 /* Bfd symbols are section relative. */
300 symaddr
= sym
->value
+ sym
->section
->vma
;
301 /* Relocate all non-absolute symbols by the section offset. */
302 if (sym
->section
!= &bfd_abs_section
)
306 /* For non-absolute symbols, use the type of the section
307 they are relative to, to intuit text/data. Bfd provides
308 no way of figuring this out for absolute symbols. */
309 if (sym
->section
== &bfd_abs_section
)
311 /* This is a hack to get the minimal symbol type
312 right for Irix 5, which has absolute addresses
313 with special section indices for dynamic symbols. */
314 unsigned short shndx
=
315 ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_shndx
;
325 case SHN_MIPS_ACOMMON
:
332 /* If it is an Irix dynamic symbol, skip section name
333 symbols, relocate all others by section offset. */
334 if (ms_type
!= mst_abs
)
336 if (sym
->name
[0] == '.')
341 else if (sym
->section
->flags
& SEC_CODE
)
343 if (sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
))
347 else if ((sym
->name
[0] == '.' && sym
->name
[1] == 'L')
348 || ((sym
->flags
& BSF_LOCAL
)
349 && sym
->name
[0] == '$'
350 && sym
->name
[1] == 'L'))
351 /* Looks like a compiler-generated label. Skip
352 it. The assembler should be skipping these (to
353 keep executables small), but apparently with
354 gcc on the (deleted) delta m88k SVR4, it loses.
355 So to have us check too should be harmless (but
356 I encourage people to fix this in the assembler
357 instead of adding checks here). */
361 ms_type
= mst_file_text
;
364 else if (sym
->section
->flags
& SEC_ALLOC
)
366 if (sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
))
368 if (sym
->section
->flags
& SEC_LOAD
)
377 else if (sym
->flags
& BSF_LOCAL
)
379 /* Named Local variable in a Data section.
380 Check its name for stabs-in-elf. */
381 int special_local_sect
;
382 if (strcmp ("Bbss.bss", sym
->name
) == 0)
383 special_local_sect
= SECT_OFF_BSS (objfile
);
384 else if (strcmp ("Ddata.data", sym
->name
) == 0)
385 special_local_sect
= SECT_OFF_DATA (objfile
);
386 else if (strcmp ("Drodata.rodata", sym
->name
) == 0)
387 special_local_sect
= SECT_OFF_RODATA (objfile
);
389 special_local_sect
= -1;
390 if (special_local_sect
>= 0)
392 /* Found a special local symbol. Allocate a
393 sectinfo, if needed, and fill it in. */
394 if (sectinfo
== NULL
)
400 = max (SECT_OFF_BSS (objfile
),
401 max (SECT_OFF_DATA (objfile
),
402 SECT_OFF_RODATA (objfile
)));
404 /* max_index is the largest index we'll
405 use into this array, so we must
406 allocate max_index+1 elements for it.
407 However, 'struct stab_section_info'
408 already includes one element, so we
409 need to allocate max_index aadditional
411 size
= (sizeof (struct stab_section_info
)
412 + (sizeof (CORE_ADDR
)
414 sectinfo
= (struct stab_section_info
*)
416 memset (sectinfo
, 0, size
);
417 sectinfo
->num_sections
= max_index
;
420 complaint (&symfile_complaints
,
421 _("elf/stab section information %s without a preceding file symbol"),
427 (char *) filesym
->name
;
430 if (sectinfo
->sections
[special_local_sect
] != 0)
431 complaint (&symfile_complaints
,
432 _("duplicated elf/stab section information for %s"),
434 /* BFD symbols are section relative. */
435 symaddr
= sym
->value
+ sym
->section
->vma
;
436 /* Relocate non-absolute symbols by the
438 if (sym
->section
!= &bfd_abs_section
)
440 sectinfo
->sections
[special_local_sect
] = symaddr
;
441 /* The special local symbols don't go in the
442 minimal symbol table, so ignore this one. */
445 /* Not a special stabs-in-elf symbol, do regular
446 symbol processing. */
447 if (sym
->section
->flags
& SEC_LOAD
)
449 ms_type
= mst_file_data
;
453 ms_type
= mst_file_bss
;
458 ms_type
= mst_unknown
;
463 /* FIXME: Solaris2 shared libraries include lots of
464 odd "absolute" and "undefined" symbols, that play
465 hob with actions like finding what function the PC
466 is in. Ignore them if they aren't text, data, or bss. */
467 /* ms_type = mst_unknown; */
468 continue; /* Skip this symbol. */
470 msym
= record_minimal_symbol
471 ((char *) sym
->name
, symaddr
,
472 ms_type
, sym
->section
, objfile
);
475 /* Pass symbol size field in via BFD. FIXME!!! */
476 unsigned long size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
477 MSYMBOL_SIZE(msym
) = size
;
479 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
481 msym
->filename
= filesymname
;
483 gdbarch_elf_make_msymbol_special (current_gdbarch
, sym
, msym
);
488 /* Scan and build partial symbols for a symbol file.
489 We have been initialized by a call to elf_symfile_init, which
490 currently does nothing.
492 SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
493 in each section. We simplify it down to a single offset for all
496 MAINLINE is true if we are reading the main symbol
497 table (as opposed to a shared lib or dynamically loaded file).
499 This function only does the minimum work necessary for letting the
500 user "name" things symbolically; it does not read the entire symtab.
501 Instead, it reads the external and static symbols and puts them in partial
502 symbol tables. When more extensive information is requested of a
503 file, the corresponding partial symbol table is mutated into a full
504 fledged symbol table by going back and reading the symbols
507 We look for sections with specific names, to tell us what debug
508 format to look for: FIXME!!!
510 elfstab_build_psymtabs() handles STABS symbols;
511 mdebug_build_psymtabs() handles ECOFF debugging information.
513 Note that ELF files have a "minimal" symbol table, which looks a lot
514 like a COFF symbol table, but has only the minimal information necessary
515 for linking. We process this also, and use the information to
516 build gdb's minimal symbol table. This gives us some minimal debugging
517 capability even for files compiled without -g. */
520 elf_symfile_read (struct objfile
*objfile
, int mainline
)
522 bfd
*abfd
= objfile
->obfd
;
524 struct cleanup
*back_to
;
526 long symcount
= 0, dynsymcount
= 0, synthcount
, storage_needed
;
527 asymbol
**symbol_table
= NULL
, **dyn_symbol_table
= NULL
;
530 init_minimal_symbol_collection ();
531 back_to
= make_cleanup_discard_minimal_symbols ();
533 memset ((char *) &ei
, 0, sizeof (ei
));
535 /* Allocate struct to keep track of the symfile */
536 objfile
->deprecated_sym_stab_info
= (struct dbx_symfile_info
*)
537 xmalloc (sizeof (struct dbx_symfile_info
));
538 memset ((char *) objfile
->deprecated_sym_stab_info
, 0, sizeof (struct dbx_symfile_info
));
539 make_cleanup (free_elfinfo
, (void *) objfile
);
541 /* Process the normal ELF symbol table first. This may write some
542 chain of info into the dbx_symfile_info in objfile->deprecated_sym_stab_info,
543 which can later be used by elfstab_offset_sections. */
545 storage_needed
= bfd_get_symtab_upper_bound (objfile
->obfd
);
546 if (storage_needed
< 0)
547 error (_("Can't read symbols from %s: %s"), bfd_get_filename (objfile
->obfd
),
548 bfd_errmsg (bfd_get_error ()));
550 if (storage_needed
> 0)
552 symbol_table
= (asymbol
**) xmalloc (storage_needed
);
553 make_cleanup (xfree
, symbol_table
);
554 symcount
= bfd_canonicalize_symtab (objfile
->obfd
, symbol_table
);
557 error (_("Can't read symbols from %s: %s"), bfd_get_filename (objfile
->obfd
),
558 bfd_errmsg (bfd_get_error ()));
560 elf_symtab_read (objfile
, 0, symcount
, symbol_table
);
563 /* Add the dynamic symbols. */
565 storage_needed
= bfd_get_dynamic_symtab_upper_bound (objfile
->obfd
);
567 if (storage_needed
> 0)
569 dyn_symbol_table
= (asymbol
**) xmalloc (storage_needed
);
570 make_cleanup (xfree
, dyn_symbol_table
);
571 dynsymcount
= bfd_canonicalize_dynamic_symtab (objfile
->obfd
,
575 error (_("Can't read symbols from %s: %s"), bfd_get_filename (objfile
->obfd
),
576 bfd_errmsg (bfd_get_error ()));
578 elf_symtab_read (objfile
, 1, dynsymcount
, dyn_symbol_table
);
581 /* Add synthetic symbols - for instance, names for any PLT entries. */
583 synthcount
= bfd_get_synthetic_symtab (abfd
, symcount
, symbol_table
,
584 dynsymcount
, dyn_symbol_table
,
588 asymbol
**synth_symbol_table
;
591 make_cleanup (xfree
, synthsyms
);
592 synth_symbol_table
= xmalloc (sizeof (asymbol
*) * synthcount
);
593 for (i
= 0; i
< synthcount
; i
++)
594 synth_symbol_table
[i
] = synthsyms
+ i
;
595 make_cleanup (xfree
, synth_symbol_table
);
596 elf_symtab_read (objfile
, 0, synthcount
, synth_symbol_table
);
599 /* Install any minimal symbols that have been collected as the current
600 minimal symbols for this objfile. The debug readers below this point
601 should not generate new minimal symbols; if they do it's their
602 responsibility to install them. "mdebug" appears to be the only one
603 which will do this. */
605 install_minimal_symbols (objfile
);
606 do_cleanups (back_to
);
608 /* Now process debugging information, which is contained in
609 special ELF sections. */
611 /* If we are reinitializing, or if we have never loaded syms yet,
612 set table to empty. MAINLINE is cleared so that *_read_psymtab
613 functions do not all also re-initialize the psymbol table. */
616 init_psymbol_list (objfile
, 0);
620 /* We first have to find them... */
621 bfd_map_over_sections (abfd
, elf_locate_sections
, (void *) & ei
);
623 /* ELF debugging information is inserted into the psymtab in the
624 order of least informative first - most informative last. Since
625 the psymtab table is searched `most recent insertion first' this
626 increases the probability that more detailed debug information
627 for a section is found.
629 For instance, an object file might contain both .mdebug (XCOFF)
630 and .debug_info (DWARF2) sections then .mdebug is inserted first
631 (searched last) and DWARF2 is inserted last (searched first). If
632 we don't do this then the XCOFF info is found first - for code in
633 an included file XCOFF info is useless. */
637 const struct ecoff_debug_swap
*swap
;
639 /* .mdebug section, presumably holding ECOFF debugging
641 swap
= get_elf_backend_data (abfd
)->elf_backend_ecoff_debug_swap
;
643 elfmdebug_build_psymtabs (objfile
, swap
, ei
.mdebugsect
);
649 /* Stab sections have an associated string table that looks like
650 a separate section. */
651 str_sect
= bfd_get_section_by_name (abfd
, ".stabstr");
653 /* FIXME should probably warn about a stab section without a stabstr. */
655 elfstab_build_psymtabs (objfile
,
659 bfd_section_size (abfd
, str_sect
));
661 if (dwarf2_has_info (objfile
))
663 /* DWARF 2 sections */
664 dwarf2_build_psymtabs (objfile
, mainline
);
667 /* FIXME: kettenis/20030504: This still needs to be integrated with
668 dwarf2read.c in a better way. */
669 dwarf2_build_frame_info (objfile
);
672 /* This cleans up the objfile's deprecated_sym_stab_info pointer, and
673 the chain of stab_section_info's, that might be dangling from
677 free_elfinfo (void *objp
)
679 struct objfile
*objfile
= (struct objfile
*) objp
;
680 struct dbx_symfile_info
*dbxinfo
= objfile
->deprecated_sym_stab_info
;
681 struct stab_section_info
*ssi
, *nssi
;
683 ssi
= dbxinfo
->stab_section_info
;
691 dbxinfo
->stab_section_info
= 0; /* Just say No mo info about this. */
695 /* Initialize anything that needs initializing when a completely new symbol
696 file is specified (not just adding some symbols from another file, e.g. a
699 We reinitialize buildsym, since we may be reading stabs from an ELF file. */
702 elf_new_init (struct objfile
*ignore
)
704 stabsread_new_init ();
705 buildsym_new_init ();
708 /* Perform any local cleanups required when we are done with a particular
709 objfile. I.E, we are in the process of discarding all symbol information
710 for an objfile, freeing up all memory held for it, and unlinking the
711 objfile struct from the global list of known objfiles. */
714 elf_symfile_finish (struct objfile
*objfile
)
716 if (objfile
->deprecated_sym_stab_info
!= NULL
)
718 xfree (objfile
->deprecated_sym_stab_info
);
722 /* ELF specific initialization routine for reading symbols.
724 It is passed a pointer to a struct sym_fns which contains, among other
725 things, the BFD for the file whose symbols are being read, and a slot for
726 a pointer to "private data" which we can fill with goodies.
728 For now at least, we have nothing in particular to do, so this function is
732 elf_symfile_init (struct objfile
*objfile
)
734 /* ELF objects may be reordered, so set OBJF_REORDERED. If we
735 find this causes a significant slowdown in gdb then we could
736 set it in the debug symbol readers only when necessary. */
737 objfile
->flags
|= OBJF_REORDERED
;
740 /* When handling an ELF file that contains Sun STABS debug info,
741 some of the debug info is relative to the particular chunk of the
742 section that was generated in its individual .o file. E.g.
743 offsets to static variables are relative to the start of the data
744 segment *for that module before linking*. This information is
745 painfully squirreled away in the ELF symbol table as local symbols
746 with wierd names. Go get 'em when needed. */
749 elfstab_offset_sections (struct objfile
*objfile
, struct partial_symtab
*pst
)
751 char *filename
= pst
->filename
;
752 struct dbx_symfile_info
*dbx
= objfile
->deprecated_sym_stab_info
;
753 struct stab_section_info
*maybe
= dbx
->stab_section_info
;
754 struct stab_section_info
*questionable
= 0;
758 /* The ELF symbol info doesn't include path names, so strip the path
759 (if any) from the psymtab filename. */
760 while (0 != (p
= strchr (filename
, '/')))
763 /* FIXME: This linear search could speed up significantly
764 if it was chained in the right order to match how we search it,
765 and if we unchained when we found a match. */
766 for (; maybe
; maybe
= maybe
->next
)
768 if (filename
[0] == maybe
->filename
[0]
769 && strcmp (filename
, maybe
->filename
) == 0)
771 /* We found a match. But there might be several source files
772 (from different directories) with the same name. */
773 if (0 == maybe
->found
)
775 questionable
= maybe
; /* Might use it later. */
779 if (maybe
== 0 && questionable
!= 0)
781 complaint (&symfile_complaints
,
782 _("elf/stab section information questionable for %s"), filename
);
783 maybe
= questionable
;
788 /* Found it! Allocate a new psymtab struct, and fill it in. */
790 pst
->section_offsets
= (struct section_offsets
*)
791 obstack_alloc (&objfile
->objfile_obstack
,
792 SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
));
793 for (i
= 0; i
< maybe
->num_sections
; i
++)
794 (pst
->section_offsets
)->offsets
[i
] = maybe
->sections
[i
];
798 /* We were unable to find any offsets for this file. Complain. */
799 if (dbx
->stab_section_info
) /* If there *is* any info, */
800 complaint (&symfile_complaints
,
801 _("elf/stab section information missing for %s"), filename
);
804 /* Register that we are able to handle ELF object file formats. */
806 static struct sym_fns elf_sym_fns
=
808 bfd_target_elf_flavour
,
809 elf_new_init
, /* sym_new_init: init anything gbl to entire symtab */
810 elf_symfile_init
, /* sym_init: read initial info, setup for sym_read() */
811 elf_symfile_read
, /* sym_read: read a symbol file into symtab */
812 elf_symfile_finish
, /* sym_finish: finished with file, cleanup */
813 default_symfile_offsets
, /* sym_offsets: Translate ext. to int. relocation */
814 elf_symfile_segments
, /* sym_segments: Get segment information from
816 NULL
, /* sym_read_linetable */
817 NULL
/* next: pointer to next struct sym_fns */
821 _initialize_elfread (void)
823 add_symtab_fns (&elf_sym_fns
);