1 /* Read dbx symbol tables and convert to internal format, for GDB.
2 Copyright (C) 1986-2018 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* This module provides three functions: dbx_symfile_init,
20 which initializes to read a symbol file; dbx_new_init, which
21 discards existing cached information when all symbols are being
22 discarded; and dbx_symfile_read, which reads a symbol table
25 dbx_symfile_read only does the minimum work necessary for letting the
26 user "name" things symbolically; it does not read the entire symtab.
27 Instead, it reads the external and static symbols and puts them in partial
28 symbol tables. When more extensive information is requested of a
29 file, the corresponding partial symbol table is mutated into a full
30 fledged symbol table by going back and reading the symbols
31 for real. dbx_psymtab_to_symtab() is the function that does this */
34 #if defined(__CYGNUSCLIB__)
35 #include <sys/types.h>
39 #include "gdb_obstack.h"
42 #include "breakpoint.h"
44 #include "gdbcore.h" /* for bfd stuff */
45 #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
46 #include "filenames.h"
49 #include "stabsread.h"
50 #include "gdb-stabs.h"
52 #include "complaints.h"
54 #include "cp-support.h"
57 #include "aout/aout64.h"
58 #include "aout/stab_gnu.h" /* We always use GNU stabs, not
62 /* Key for dbx-associated data. */
64 const struct objfile_data *dbx_objfile_data_key;
66 /* We put a pointer to this structure in the read_symtab_private field
71 /* Offset within the file symbol table of first local symbol for this
76 /* Length (in bytes) of the section of the symbol table devoted to
77 this file's symbols (actually, the section bracketed may contain
78 more than just this file's symbols). If ldsymlen is 0, the only
79 reason for this thing's existence is the dependency list. Nothing
80 else will happen when it is read in. */
84 /* The size of each symbol in the symbol file (in external form). */
88 /* Further information needed to locate the symbols if they are in
93 int file_string_offset;
94 enum language pst_language;
97 #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
98 #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
99 #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
100 #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size)
101 #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset)
102 #define STRING_OFFSET(p) (SYMLOC(p)->string_offset)
103 #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset)
104 #define PST_LANGUAGE(p) (SYMLOC(p)->pst_language)
107 /* The objfile we are currently reading. */
109 static struct objfile *dbxread_objfile;
111 /* Remember what we deduced to be the source language of this psymtab. */
113 static enum language psymtab_language = language_unknown;
115 /* The BFD for this file -- implicit parameter to next_symbol_text. */
117 static bfd *symfile_bfd;
119 /* The size of each symbol in the symbol file (in external form).
120 This is set by dbx_symfile_read when building psymtabs, and by
121 dbx_psymtab_to_symtab when building symtabs. */
123 static unsigned symbol_size;
125 /* This is the offset of the symbol table in the executable file. */
127 static unsigned symbol_table_offset;
129 /* This is the offset of the string table in the executable file. */
131 static unsigned string_table_offset;
133 /* For elf+stab executables, the n_strx field is not a simple index
134 into the string table. Instead, each .o file has a base offset in
135 the string table, and the associated symbols contain offsets from
136 this base. The following two variables contain the base offset for
137 the current and next .o files. */
139 static unsigned int file_string_table_offset;
140 static unsigned int next_file_string_table_offset;
142 /* .o and NLM files contain unrelocated addresses which are based at
143 0. When non-zero, this flag disables some of the special cases for
144 Solaris elf+stab text addresses at location 0. */
146 static int symfile_relocatable = 0;
148 /* When set, we are processing a .o file compiled by sun acc. This is
149 misnamed; it refers to all stabs-in-elf implementations which use
150 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
151 stabs-in-elf implementations ever invented will choose to be
154 static unsigned char processing_acc_compilation;
157 /* The lowest text address we have yet encountered. This is needed
158 because in an a.out file, there is no header field which tells us
159 what address the program is actually going to be loaded at, so we
160 need to make guesses based on the symbols (which *are* relocated to
161 reflect the address it will be loaded at). */
163 static CORE_ADDR lowest_text_address;
165 /* Non-zero if there is any line number info in the objfile. Prevents
166 dbx_end_psymtab from discarding an otherwise empty psymtab. */
168 static int has_line_numbers;
170 /* Complaints about the symbols we have encountered. */
173 unknown_symtype_complaint (const char *arg1)
175 complaint (_("unknown symbol type %s"), arg1);
179 lbrac_mismatch_complaint (int arg1)
181 complaint (_("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1);
185 repeated_header_complaint (const char *arg1, int arg2)
187 complaint (_("\"repeated\" header file %s not "
188 "previously seen, at symtab pos %d"),
192 /* find_text_range --- find start and end of loadable code sections
194 The find_text_range function finds the shortest address range that
195 encloses all sections containing executable code, and stores it in
196 objfile's text_addr and text_size members.
198 dbx_symfile_read will use this to finish off the partial symbol
199 table, in some cases. */
202 find_text_range (bfd * sym_bfd, struct objfile *objfile)
209 for (sec = sym_bfd->sections; sec; sec = sec->next)
210 if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE)
212 CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec);
213 CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec);
217 if (sec_start < start)
232 error (_("Can't find any code sections in symbol file"));
234 DBX_TEXT_ADDR (objfile) = start;
235 DBX_TEXT_SIZE (objfile) = end - start;
240 /* During initial symbol readin, we need to have a structure to keep
241 track of which psymtabs have which bincls in them. This structure
242 is used during readin to setup the list of dependencies within each
243 partial symbol table. */
245 struct header_file_location
247 header_file_location (const char *name_, int instance_,
248 struct partial_symtab *pst_)
250 instance (instance_),
255 const char *name; /* Name of header file */
256 int instance; /* See above */
257 struct partial_symtab *pst; /* Partial symtab that has the
258 BINCL/EINCL defs for this file. */
261 /* The list of bincls. */
262 static std::vector<struct header_file_location> *bincl_list;
264 /* Local function prototypes. */
266 static void read_ofile_symtab (struct objfile *, struct partial_symtab *);
268 static void dbx_read_symtab (struct partial_symtab *self,
269 struct objfile *objfile);
271 static void dbx_psymtab_to_symtab_1 (struct objfile *, struct partial_symtab *);
273 static void read_dbx_symtab (minimal_symbol_reader &, struct objfile *);
275 static struct partial_symtab *find_corresponding_bincl_psymtab (const char *,
278 static const char *dbx_next_symbol_text (struct objfile *);
280 static void fill_symbuf (bfd *);
282 static void dbx_symfile_init (struct objfile *);
284 static void dbx_new_init (struct objfile *);
286 static void dbx_symfile_read (struct objfile *, symfile_add_flags);
288 static void dbx_symfile_finish (struct objfile *);
290 static void record_minimal_symbol (minimal_symbol_reader &,
291 const char *, CORE_ADDR, int,
294 static void add_new_header_file (const char *, int);
296 static void add_old_header_file (const char *, int);
298 static void add_this_object_header_file (int);
300 static struct partial_symtab *start_psymtab (struct objfile *, const char *,
302 std::vector<partial_symbol *> &,
303 std::vector<partial_symbol *> &);
305 /* Free up old header file tables. */
308 free_header_files (void)
310 if (this_object_header_files)
312 xfree (this_object_header_files);
313 this_object_header_files = NULL;
315 n_allocated_this_object_header_files = 0;
318 /* Allocate new header file tables. */
321 init_header_files (void)
323 n_allocated_this_object_header_files = 10;
324 this_object_header_files = XNEWVEC (int, 10);
327 /* Add header file number I for this object file
328 at the next successive FILENUM. */
331 add_this_object_header_file (int i)
333 if (n_this_object_header_files == n_allocated_this_object_header_files)
335 n_allocated_this_object_header_files *= 2;
336 this_object_header_files
337 = (int *) xrealloc ((char *) this_object_header_files,
338 n_allocated_this_object_header_files * sizeof (int));
341 this_object_header_files[n_this_object_header_files++] = i;
344 /* Add to this file an "old" header file, one already seen in
345 a previous object file. NAME is the header file's name.
346 INSTANCE is its instance code, to select among multiple
347 symbol tables for the same header file. */
350 add_old_header_file (const char *name, int instance)
352 struct header_file *p = HEADER_FILES (dbxread_objfile);
355 for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++)
356 if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance)
358 add_this_object_header_file (i);
361 repeated_header_complaint (name, symnum);
364 /* Add to this file a "new" header file: definitions for its types follow.
365 NAME is the header file's name.
366 Most often this happens only once for each distinct header file,
367 but not necessarily. If it happens more than once, INSTANCE has
368 a different value each time, and references to the header file
369 use INSTANCE values to select among them.
371 dbx output contains "begin" and "end" markers for each new header file,
372 but at this level we just need to know which files there have been;
373 so we record the file when its "begin" is seen and ignore the "end". */
376 add_new_header_file (const char *name, int instance)
379 struct header_file *hfile;
381 /* Make sure there is room for one more header file. */
383 i = N_ALLOCATED_HEADER_FILES (dbxread_objfile);
385 if (N_HEADER_FILES (dbxread_objfile) == i)
389 N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10;
390 HEADER_FILES (dbxread_objfile) = (struct header_file *)
391 xmalloc (10 * sizeof (struct header_file));
396 N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i;
397 HEADER_FILES (dbxread_objfile) = (struct header_file *)
398 xrealloc ((char *) HEADER_FILES (dbxread_objfile),
399 (i * sizeof (struct header_file)));
403 /* Create an entry for this header file. */
405 i = N_HEADER_FILES (dbxread_objfile)++;
406 hfile = HEADER_FILES (dbxread_objfile) + i;
407 hfile->name = xstrdup (name);
408 hfile->instance = instance;
410 hfile->vector = XCNEWVEC (struct type *, 10);
412 add_this_object_header_file (i);
416 static struct type **
417 explicit_lookup_type (int real_filenum, int index)
419 struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum];
421 if (index >= f->length)
424 f->vector = (struct type **)
425 xrealloc (f->vector, f->length * sizeof (struct type *));
426 memset (&f->vector[f->length / 2],
427 '\0', f->length * sizeof (struct type *) / 2);
429 return &f->vector[index];
434 record_minimal_symbol (minimal_symbol_reader &reader,
435 const char *name, CORE_ADDR address, int type,
436 struct objfile *objfile)
438 enum minimal_symbol_type ms_type;
445 section = SECT_OFF_TEXT (objfile);
449 section = SECT_OFF_DATA (objfile);
453 section = SECT_OFF_BSS (objfile);
462 section = SECT_OFF_DATA (objfile);
465 /* I don't think this type actually exists; since a N_SETV is the result
466 of going over many .o files, it doesn't make sense to have one
468 ms_type = mst_file_data;
469 section = SECT_OFF_DATA (objfile);
476 ms_type = mst_file_text;
477 section = SECT_OFF_TEXT (objfile);
480 ms_type = mst_file_data;
482 /* Check for __DYNAMIC, which is used by Sun shared libraries.
483 Record it as global even if it's local, not global, so
484 lookup_minimal_symbol can find it. We don't check symbol_leading_char
485 because for SunOS4 it always is '_'. */
486 if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0)
489 /* Same with virtual function tables, both global and static. */
491 const char *tempstring = name;
493 if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd))
495 if (is_vtable_name (tempstring))
498 section = SECT_OFF_DATA (objfile);
501 ms_type = mst_file_bss;
502 section = SECT_OFF_BSS (objfile);
505 ms_type = mst_unknown;
510 if ((ms_type == mst_file_text || ms_type == mst_text)
511 && address < lowest_text_address)
512 lowest_text_address = address;
514 reader.record_with_info (name, address, ms_type, section);
517 /* Scan and build partial symbols for a symbol file.
518 We have been initialized by a call to dbx_symfile_init, which
519 put all the relevant info into a "struct dbx_symfile_info",
520 hung off the objfile structure. */
523 dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
528 sym_bfd = objfile->obfd;
530 /* .o and .nlm files are relocatables with text, data and bss segs based at
531 0. This flag disables special (Solaris stabs-in-elf only) fixups for
532 symbols with a value of 0. */
534 symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC;
536 val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET);
538 perror_with_name (objfile_name (objfile));
540 /* Size the symbol table. */
541 if (objfile->global_psymbols.capacity () == 0
542 && objfile->static_psymbols.capacity () == 0)
543 init_psymbol_list (objfile, DBX_SYMCOUNT (objfile));
545 symbol_size = DBX_SYMBOL_SIZE (objfile);
546 symbol_table_offset = DBX_SYMTAB_OFFSET (objfile);
548 scoped_free_pendings free_pending;
550 minimal_symbol_reader reader (objfile);
552 /* Read stabs data from executable file and define symbols. */
554 read_dbx_symtab (reader, objfile);
556 /* Install any minimal symbols that have been collected as the current
557 minimal symbols for this objfile. */
562 /* Initialize anything that needs initializing when a completely new
563 symbol file is specified (not just adding some symbols from another
564 file, e.g. a shared library). */
567 dbx_new_init (struct objfile *ignore)
569 stabsread_new_init ();
571 init_header_files ();
575 /* dbx_symfile_init ()
576 is the dbx-specific initialization routine for reading symbols.
577 It is passed a struct objfile which contains, among other things,
578 the BFD for the file whose symbols are being read, and a slot for a pointer
579 to "private data" which we fill with goodies.
581 We read the string table into malloc'd space and stash a pointer to it.
583 Since BFD doesn't know how to read debug symbols in a format-independent
584 way (and may never do so...), we have to do it ourselves. We will never
585 be called unless this is an a.out (or very similar) file.
586 FIXME, there should be a cleaner peephole into the BFD environment here. */
588 #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */
591 dbx_symfile_init (struct objfile *objfile)
594 bfd *sym_bfd = objfile->obfd;
595 char *name = bfd_get_filename (sym_bfd);
597 unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE];
598 struct dbx_symfile_info *dbx;
600 /* Allocate struct to keep track of the symfile. */
601 dbx = XCNEW (struct dbx_symfile_info);
602 set_objfile_data (objfile, dbx_objfile_data_key, dbx);
604 DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
605 DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data");
606 DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss");
608 /* FIXME POKING INSIDE BFD DATA STRUCTURES. */
609 #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd))
610 #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd))
612 /* FIXME POKING INSIDE BFD DATA STRUCTURES. */
614 text_sect = bfd_get_section_by_name (sym_bfd, ".text");
616 error (_("Can't find .text section in symbol file"));
617 DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
618 DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
620 DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd);
621 DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd);
622 DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET;
624 /* Read the string table and stash it away in the objfile_obstack.
625 When we blow away the objfile the string table goes away as well.
626 Note that gdb used to use the results of attempting to malloc the
627 string table, based on the size it read, as a form of sanity check
628 for botched byte swapping, on the theory that a byte swapped string
629 table size would be so totally bogus that the malloc would fail. Now
630 that we put in on the objfile_obstack, we can't do this since gdb gets
631 a fatal error (out of virtual memory) if the size is bogus. We can
632 however at least check to see if the size is less than the size of
633 the size field itself, or larger than the size of the entire file.
634 Note that all valid string tables have a size greater than zero, since
635 the bytes used to hold the size are included in the count. */
637 if (STRING_TABLE_OFFSET == 0)
639 /* It appears that with the existing bfd code, STRING_TABLE_OFFSET
640 will never be zero, even when there is no string table. This
641 would appear to be a bug in bfd. */
642 DBX_STRINGTAB_SIZE (objfile) = 0;
643 DBX_STRINGTAB (objfile) = NULL;
647 val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET);
649 perror_with_name (name);
651 memset (size_temp, 0, sizeof (size_temp));
652 val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd);
655 perror_with_name (name);
659 /* With the existing bfd code, STRING_TABLE_OFFSET will be set to
660 EOF if there is no string table, and attempting to read the size
661 from EOF will read zero bytes. */
662 DBX_STRINGTAB_SIZE (objfile) = 0;
663 DBX_STRINGTAB (objfile) = NULL;
667 /* Read some data that would appear to be the string table size.
668 If there really is a string table, then it is probably the right
669 size. Byteswap if necessary and validate the size. Note that
670 the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some
671 random data that happened to be at STRING_TABLE_OFFSET, because
672 bfd can't tell us there is no string table, the sanity checks may
673 or may not catch this. */
674 DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp);
676 if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp)
677 || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd))
678 error (_("ridiculous string table size (%d bytes)."),
679 DBX_STRINGTAB_SIZE (objfile));
681 DBX_STRINGTAB (objfile) =
682 (char *) obstack_alloc (&objfile->objfile_obstack,
683 DBX_STRINGTAB_SIZE (objfile));
684 OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile));
686 /* Now read in the string table in one big gulp. */
688 val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET);
690 perror_with_name (name);
691 val = bfd_bread (DBX_STRINGTAB (objfile),
692 DBX_STRINGTAB_SIZE (objfile),
694 if (val != DBX_STRINGTAB_SIZE (objfile))
695 perror_with_name (name);
700 /* Perform any local cleanups required when we are done with a particular
701 objfile. I.E, we are in the process of discarding all symbol information
702 for an objfile, freeing up all memory held for it, and unlinking the
703 objfile struct from the global list of known objfiles. */
706 dbx_symfile_finish (struct objfile *objfile)
708 free_header_files ();
712 dbx_free_symfile_info (struct objfile *objfile, void *arg)
714 struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg;
716 if (dbx->header_files != NULL)
718 int i = dbx->n_header_files;
719 struct header_file *hfiles = dbx->header_files;
723 xfree (hfiles[i].name);
724 xfree (hfiles[i].vector);
734 /* Buffer for reading the symbol table entries. */
735 static struct external_nlist symbuf[4096];
736 static int symbuf_idx;
737 static int symbuf_end;
739 /* Name of last function encountered. Used in Solaris to approximate
740 object file boundaries. */
741 static const char *last_function_name;
743 /* The address in memory of the string table of the object file we are
744 reading (which might not be the "main" object file, but might be a
745 shared library or some other dynamically loaded thing). This is
746 set by read_dbx_symtab when building psymtabs, and by
747 read_ofile_symtab when building symtabs, and is used only by
748 next_symbol_text. FIXME: If that is true, we don't need it when
749 building psymtabs, right? */
750 static char *stringtab_global;
752 /* These variables are used to control fill_symbuf when the stabs
753 symbols are not contiguous (as may be the case when a COFF file is
754 linked using --split-by-reloc). */
755 static struct stab_section_list *symbuf_sections;
756 static unsigned int symbuf_left;
757 static unsigned int symbuf_read;
759 /* This variable stores a global stabs buffer, if we read stabs into
760 memory in one chunk in order to process relocations. */
761 static bfd_byte *stabs_data;
763 /* Refill the symbol table input buffer
764 and set the variables that control fetching entries from it.
765 Reports an error if no data available.
766 This function can read past the end of the symbol table
767 (into the string table) but this does no harm. */
770 fill_symbuf (bfd *sym_bfd)
777 nbytes = sizeof (symbuf);
778 if (nbytes > symbuf_left)
779 nbytes = symbuf_left;
780 memcpy (symbuf, stabs_data + symbuf_read, nbytes);
782 else if (symbuf_sections == NULL)
784 count = sizeof (symbuf);
785 nbytes = bfd_bread (symbuf, count, sym_bfd);
789 if (symbuf_left <= 0)
791 file_ptr filepos = symbuf_sections->section->filepos;
793 if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0)
794 perror_with_name (bfd_get_filename (sym_bfd));
795 symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section);
796 symbol_table_offset = filepos - symbuf_read;
797 symbuf_sections = symbuf_sections->next;
801 if (count > sizeof (symbuf))
802 count = sizeof (symbuf);
803 nbytes = bfd_bread (symbuf, count, sym_bfd);
807 perror_with_name (bfd_get_filename (sym_bfd));
808 else if (nbytes == 0)
809 error (_("Premature end of file reading symbol table"));
810 symbuf_end = nbytes / symbol_size;
812 symbuf_left -= nbytes;
813 symbuf_read += nbytes;
817 stabs_seek (int sym_offset)
821 symbuf_read += sym_offset;
822 symbuf_left -= sym_offset;
825 bfd_seek (symfile_bfd, sym_offset, SEEK_CUR);
828 #define INTERNALIZE_SYMBOL(intern, extern, abfd) \
830 (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \
831 (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \
832 (intern).n_other = 0; \
833 (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \
834 if (bfd_get_sign_extend_vma (abfd)) \
835 (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \
837 (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \
840 /* Invariant: The symbol pointed to by symbuf_idx is the first one
841 that hasn't been swapped. Swap the symbol at the same time
842 that symbuf_idx is incremented. */
844 /* dbx allows the text of a symbol name to be continued into the
845 next symbol name! When such a continuation is encountered
846 (a \ at the end of the text of a name)
847 call this function to get the continuation. */
850 dbx_next_symbol_text (struct objfile *objfile)
852 struct internal_nlist nlist;
854 if (symbuf_idx == symbuf_end)
855 fill_symbuf (symfile_bfd);
858 INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd);
859 OBJSTAT (objfile, n_stabs++);
863 return nlist.n_strx + stringtab_global + file_string_table_offset;
867 /* Given a name, value pair, find the corresponding
868 bincl in the list. Return the partial symtab associated
869 with that header_file_location. */
871 static struct partial_symtab *
872 find_corresponding_bincl_psymtab (const char *name, int instance)
874 for (const header_file_location &bincl : *bincl_list)
875 if (bincl.instance == instance
876 && strcmp (name, bincl.name) == 0)
879 repeated_header_complaint (name, symnum);
880 return (struct partial_symtab *) 0;
883 /* Set namestring based on nlist. If the string table index is invalid,
884 give a fake name, and print a single error message per symbol file read,
885 rather than abort the symbol reading or flood the user with messages. */
888 set_namestring (struct objfile *objfile, const struct internal_nlist *nlist)
890 const char *namestring;
892 if (nlist->n_strx + file_string_table_offset
893 >= DBX_STRINGTAB_SIZE (objfile)
894 || nlist->n_strx + file_string_table_offset < nlist->n_strx)
896 complaint (_("bad string table offset in symbol %d"),
898 namestring = "<bad string table offset>";
901 namestring = (nlist->n_strx + file_string_table_offset
902 + DBX_STRINGTAB (objfile));
907 find_stab_function_addr (const char *namestring, const char *filename,
908 struct objfile *objfile)
910 struct bound_minimal_symbol msym;
913 const char *colon = strchr (namestring, ':');
917 n = colon - namestring;
919 char *p = (char *) alloca (n + 2);
920 strncpy (p, namestring, n);
923 msym = lookup_minimal_symbol (p, filename, objfile);
924 if (msym.minsym == NULL)
926 /* Sun Fortran appends an underscore to the minimal symbol name,
927 try again with an appended underscore if the minimal symbol
931 msym = lookup_minimal_symbol (p, filename, objfile);
934 if (msym.minsym == NULL && filename != NULL)
936 /* Try again without the filename. */
938 msym = lookup_minimal_symbol (p, NULL, objfile);
940 if (msym.minsym == NULL && filename != NULL)
942 /* And try again for Sun Fortran, but without the filename. */
945 msym = lookup_minimal_symbol (p, NULL, objfile);
948 return msym.minsym == NULL ? 0 : BMSYMBOL_VALUE_ADDRESS (msym);
952 function_outside_compilation_unit_complaint (const char *arg1)
954 complaint (_("function `%s' appears to be defined "
955 "outside of all compilation units"),
959 /* Setup partial_symtab's describing each source file for which
960 debugging information is available. */
963 read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile)
965 struct gdbarch *gdbarch = get_objfile_arch (objfile);
966 struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */
967 struct internal_nlist nlist;
970 const char *sym_name;
973 const char *namestring;
975 int past_first_source_file = 0;
976 CORE_ADDR last_function_start = 0;
981 /* Current partial symtab. */
982 struct partial_symtab *pst;
984 /* List of current psymtab's include files. */
985 const char **psymtab_include_list;
986 int includes_allocated;
989 /* Index within current psymtab dependency list. */
990 struct partial_symtab **dependency_list;
991 int dependencies_used, dependencies_allocated;
993 text_addr = DBX_TEXT_ADDR (objfile);
994 text_size = DBX_TEXT_SIZE (objfile);
996 /* FIXME. We probably want to change stringtab_global rather than add this
997 while processing every symbol entry. FIXME. */
998 file_string_table_offset = 0;
999 next_file_string_table_offset = 0;
1001 stringtab_global = DBX_STRINGTAB (objfile);
1003 pst = (struct partial_symtab *) 0;
1005 includes_allocated = 30;
1007 psymtab_include_list = (const char **) alloca (includes_allocated *
1008 sizeof (const char *));
1010 dependencies_allocated = 30;
1011 dependencies_used = 0;
1013 (struct partial_symtab **) alloca (dependencies_allocated *
1014 sizeof (struct partial_symtab *));
1016 /* Init bincl list */
1017 std::vector<struct header_file_location> bincl_storage;
1018 scoped_restore restore_bincl_global
1019 = make_scoped_restore (&bincl_list, &bincl_storage);
1021 set_last_source_file (NULL);
1023 lowest_text_address = (CORE_ADDR) -1;
1025 symfile_bfd = objfile->obfd; /* For next_text_symbol. */
1026 abfd = objfile->obfd;
1027 symbuf_end = symbuf_idx = 0;
1028 next_symbol_text_func = dbx_next_symbol_text;
1029 textlow_not_set = 1;
1030 has_line_numbers = 0;
1032 /* FIXME: jimb/2003-09-12: We don't apply the right section's offset
1033 to global and static variables. The stab for a global or static
1034 variable doesn't give us any indication of which section it's in,
1035 so we can't tell immediately which offset in
1036 objfile->section_offsets we should apply to the variable's
1039 We could certainly find out which section contains the variable
1040 by looking up the variable's unrelocated address with
1041 find_pc_section, but that would be expensive; this is the
1042 function that constructs the partial symbol tables by examining
1043 every symbol in the entire executable, and it's
1044 performance-critical. So that expense would not be welcome. I'm
1045 not sure what to do about this at the moment.
1047 What we have done for years is to simply assume that the .data
1048 section's offset is appropriate for all global and static
1049 variables. Recently, this was expanded to fall back to the .bss
1050 section's offset if there is no .data section, and then to the
1051 .rodata section's offset. */
1052 data_sect_index = objfile->sect_index_data;
1053 if (data_sect_index == -1)
1054 data_sect_index = SECT_OFF_BSS (objfile);
1055 if (data_sect_index == -1)
1056 data_sect_index = SECT_OFF_RODATA (objfile);
1058 /* If data_sect_index is still -1, that's okay. It's perfectly fine
1059 for the file to have no .data, no .bss, and no .text at all, if
1060 it also has no global or static variables. If it does, we will
1061 get an internal error from an ANOFFSET macro below when we try to
1062 use data_sect_index. */
1064 for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++)
1066 /* Get the symbol for this run and pull out some info. */
1067 QUIT; /* Allow this to be interruptable. */
1068 if (symbuf_idx == symbuf_end)
1070 bufp = &symbuf[symbuf_idx++];
1073 * Special case to speed up readin.
1075 if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE)
1077 has_line_numbers = 1;
1081 INTERNALIZE_SYMBOL (nlist, bufp, abfd);
1082 OBJSTAT (objfile, n_stabs++);
1084 /* Ok. There is a lot of code duplicated in the rest of this
1085 switch statement (for efficiency reasons). Since I don't
1086 like duplicating code, I will do my penance here, and
1087 describe the code which is duplicated:
1089 *) The assignment to namestring.
1090 *) The call to strchr.
1091 *) The addition of a partial symbol the two partial
1092 symbol lists. This last is a large section of code, so
1093 I've imbedded it in the following macro. */
1095 switch (nlist.n_type)
1098 * Standard, external, non-debugger, symbols
1101 case N_TEXT | N_EXT:
1102 case N_NBTEXT | N_EXT:
1105 case N_DATA | N_EXT:
1106 case N_NBDATA | N_EXT:
1111 case N_NBBSS | N_EXT:
1112 case N_SETV | N_EXT: /* FIXME, is this in BSS? */
1117 namestring = set_namestring (objfile, &nlist);
1119 record_minimal_symbol (reader, namestring, nlist.n_value,
1120 nlist.n_type, objfile); /* Always */
1123 /* Standard, local, non-debugger, symbols. */
1127 /* We need to be able to deal with both N_FN or N_TEXT,
1128 because we have no way of knowing whether the sys-supplied ld
1129 or GNU ld was used to make the executable. Sequents throw
1130 in another wrinkle -- they renumbered N_FN. */
1135 namestring = set_namestring (objfile, &nlist);
1137 if ((namestring[0] == '-' && namestring[1] == 'l')
1138 || (namestring[(nsl = strlen (namestring)) - 1] == 'o'
1139 && namestring[nsl - 2] == '.'))
1141 nlist.n_value += ANOFFSET (objfile->section_offsets,
1142 SECT_OFF_TEXT (objfile));
1144 if (past_first_source_file && pst
1145 /* The gould NP1 uses low values for .o and -l symbols
1146 which are not the address. */
1147 && nlist.n_value >= pst->textlow)
1149 dbx_end_psymtab (objfile, pst, psymtab_include_list,
1150 includes_used, symnum * symbol_size,
1151 nlist.n_value > pst->texthigh
1152 ? nlist.n_value : pst->texthigh,
1153 dependency_list, dependencies_used,
1155 pst = (struct partial_symtab *) 0;
1157 dependencies_used = 0;
1158 has_line_numbers = 0;
1161 past_first_source_file = 1;
1170 case N_UNDF | N_EXT:
1171 /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol.
1172 We used to rely on the target to tell us whether it knows
1173 where the symbol has been relocated to, but none of the
1174 target implementations actually provided that operation.
1175 So we just ignore the symbol, the same way we would do if
1176 we had a target-side symbol lookup which returned no match.
1178 All other symbols (with nlist.n_value == 0), are really
1179 undefined, and so we ignore them too. */
1183 if (processing_acc_compilation && nlist.n_strx == 1)
1185 /* Deal with relative offsets in the string table
1186 used in ELF+STAB under Solaris. If we want to use the
1187 n_strx field, which contains the name of the file,
1188 we must adjust file_string_table_offset *before* calling
1189 set_namestring(). */
1190 past_first_source_file = 1;
1191 file_string_table_offset = next_file_string_table_offset;
1192 next_file_string_table_offset =
1193 file_string_table_offset + nlist.n_value;
1194 if (next_file_string_table_offset < file_string_table_offset)
1195 error (_("string table offset backs up at %d"), symnum);
1196 /* FIXME -- replace error() with complaint. */
1201 /* Lots of symbol types we can just ignore. */
1208 /* Keep going . . . */
1211 * Special symbol types for GNU
1214 case N_INDR | N_EXT:
1216 case N_SETA | N_EXT:
1218 case N_SETT | N_EXT:
1220 case N_SETD | N_EXT:
1222 case N_SETB | N_EXT:
1233 static int prev_so_symnum = -10;
1234 static int first_so_symnum;
1236 static const char *dirname_nso;
1237 int prev_textlow_not_set;
1239 valu = nlist.n_value + ANOFFSET (objfile->section_offsets,
1240 SECT_OFF_TEXT (objfile));
1242 prev_textlow_not_set = textlow_not_set;
1244 /* A zero value is probably an indication for the SunPRO 3.0
1245 compiler. dbx_end_psymtab explicitly tests for zero, so
1246 don't relocate it. */
1248 if (nlist.n_value == 0
1249 && gdbarch_sofun_address_maybe_missing (gdbarch))
1251 textlow_not_set = 1;
1255 textlow_not_set = 0;
1257 past_first_source_file = 1;
1259 if (prev_so_symnum != symnum - 1)
1260 { /* Here if prev stab wasn't N_SO. */
1261 first_so_symnum = symnum;
1265 dbx_end_psymtab (objfile, pst, psymtab_include_list,
1266 includes_used, symnum * symbol_size,
1267 valu > pst->texthigh
1268 ? valu : pst->texthigh,
1269 dependency_list, dependencies_used,
1270 prev_textlow_not_set);
1271 pst = (struct partial_symtab *) 0;
1273 dependencies_used = 0;
1274 has_line_numbers = 0;
1278 prev_so_symnum = symnum;
1280 /* End the current partial symtab and start a new one. */
1282 namestring = set_namestring (objfile, &nlist);
1284 /* Null name means end of .o file. Don't start a new one. */
1285 if (*namestring == '\000')
1288 /* Some compilers (including gcc) emit a pair of initial N_SOs.
1289 The first one is a directory name; the second the file name.
1290 If pst exists, is empty, and has a filename ending in '/',
1291 we assume the previous N_SO was a directory name. */
1293 p = lbasename (namestring);
1294 if (p != namestring && *p == '\000')
1296 /* Save the directory name SOs locally, then save it into
1297 the psymtab when it's created below. */
1298 dirname_nso = namestring;
1302 /* Some other compilers (C++ ones in particular) emit useless
1303 SOs for non-existant .c files. We ignore all subsequent SOs
1304 that immediately follow the first. */
1308 pst = start_psymtab (objfile,
1310 first_so_symnum * symbol_size,
1311 objfile->global_psymbols,
1312 objfile->static_psymbols);
1313 pst->dirname = dirname_nso;
1321 enum language tmp_language;
1323 /* Add this bincl to the bincl_list for future EXCLs. No
1324 need to save the string; it'll be around until
1325 read_dbx_symtab function returns. */
1327 namestring = set_namestring (objfile, &nlist);
1328 tmp_language = deduce_language_from_filename (namestring);
1330 /* Only change the psymtab's language if we've learned
1331 something useful (eg. tmp_language is not language_unknown).
1332 In addition, to match what start_subfile does, never change
1334 if (tmp_language != language_unknown
1335 && (tmp_language != language_c
1336 || psymtab_language != language_cplus))
1337 psymtab_language = tmp_language;
1341 /* FIXME: we should not get here without a PST to work on.
1342 Attempt to recover. */
1343 complaint (_("N_BINCL %s not in entries for "
1344 "any file, at symtab pos %d"),
1345 namestring, symnum);
1348 bincl_list->emplace_back (namestring, nlist.n_value, pst);
1350 /* Mark down an include file in the current psymtab. */
1352 goto record_include_file;
1357 enum language tmp_language;
1359 /* Mark down an include file in the current psymtab. */
1360 namestring = set_namestring (objfile, &nlist);
1361 tmp_language = deduce_language_from_filename (namestring);
1363 /* Only change the psymtab's language if we've learned
1364 something useful (eg. tmp_language is not language_unknown).
1365 In addition, to match what start_subfile does, never change
1367 if (tmp_language != language_unknown
1368 && (tmp_language != language_c
1369 || psymtab_language != language_cplus))
1370 psymtab_language = tmp_language;
1372 /* In C++, one may expect the same filename to come round many
1373 times, when code is coming alternately from the main file
1374 and from inline functions in other files. So I check to see
1375 if this is a file we've seen before -- either the main
1376 source file, or a previously included file.
1378 This seems to be a lot of time to be spending on N_SOL, but
1379 things like "break c-exp.y:435" need to work (I
1380 suppose the psymtab_include_list could be hashed or put
1381 in a binary tree, if profiling shows this is a major hog). */
1382 if (pst && filename_cmp (namestring, pst->filename) == 0)
1387 for (i = 0; i < includes_used; i++)
1388 if (filename_cmp (namestring, psymtab_include_list[i]) == 0)
1397 record_include_file:
1399 psymtab_include_list[includes_used++] = namestring;
1400 if (includes_used >= includes_allocated)
1402 const char **orig = psymtab_include_list;
1404 psymtab_include_list = (const char **)
1405 alloca ((includes_allocated *= 2) * sizeof (const char *));
1406 memcpy (psymtab_include_list, orig,
1407 includes_used * sizeof (const char *));
1411 case N_LSYM: /* Typedef or automatic variable. */
1412 case N_STSYM: /* Data seg var -- static. */
1413 case N_LCSYM: /* BSS " */
1414 case N_ROSYM: /* Read-only data seg var -- static. */
1415 case N_NBSTS: /* Gould nobase. */
1416 case N_NBLCS: /* symbols. */
1418 case N_GSYM: /* Global (extern) variable; can be
1419 data or bss (sigh FIXME). */
1421 /* Following may probably be ignored; I'll leave them here
1422 for now (until I do Pascal and Modula 2 extensions). */
1424 case N_PC: /* I may or may not need this; I
1426 case N_M2C: /* I suspect that I can ignore this here. */
1427 case N_SCOPE: /* Same. */
1431 namestring = set_namestring (objfile, &nlist);
1433 /* See if this is an end of function stab. */
1434 if (pst && nlist.n_type == N_FUN && *namestring == '\000')
1438 /* It's value is the size (in bytes) of the function for
1439 function relative stabs, or the address of the function's
1440 end for old style stabs. */
1441 valu = nlist.n_value + last_function_start;
1442 if (pst->texthigh == 0 || valu > pst->texthigh)
1443 pst->texthigh = valu;
1447 p = (char *) strchr (namestring, ':');
1449 continue; /* Not a debugging symbol. */
1452 sym_name = NULL; /* pacify "gcc -Werror" */
1453 if (psymtab_language == language_cplus)
1455 std::string name (namestring, p - namestring);
1456 std::string new_name = cp_canonicalize_string (name.c_str ());
1457 if (!new_name.empty ())
1459 sym_len = new_name.length ();
1460 sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack,
1468 sym_name = namestring;
1469 sym_len = p - namestring;
1472 /* Main processing section for debugging symbols which
1473 the initial read through the symbol tables needs to worry
1474 about. If we reach this point, the symbol which we are
1475 considering is definitely one we are interested in.
1476 p must also contain the (valid) index into the namestring
1477 which indicates the debugging type symbol. */
1482 nlist.n_value += ANOFFSET (objfile->section_offsets,
1485 if (gdbarch_static_transform_name_p (gdbarch))
1486 gdbarch_static_transform_name (gdbarch, namestring);
1488 add_psymbol_to_list (sym_name, sym_len, 1,
1489 VAR_DOMAIN, LOC_STATIC,
1490 &objfile->static_psymbols,
1491 nlist.n_value, psymtab_language, objfile);
1495 nlist.n_value += ANOFFSET (objfile->section_offsets,
1497 /* The addresses in these entries are reported to be
1498 wrong. See the code that reads 'G's for symtabs. */
1499 add_psymbol_to_list (sym_name, sym_len, 1,
1500 VAR_DOMAIN, LOC_STATIC,
1501 &objfile->global_psymbols,
1502 nlist.n_value, psymtab_language, objfile);
1506 /* When a 'T' entry is defining an anonymous enum, it
1507 may have a name which is the empty string, or a
1508 single space. Since they're not really defining a
1509 symbol, those shouldn't go in the partial symbol
1510 table. We do pick up the elements of such enums at
1511 'check_enum:', below. */
1512 if (p >= namestring + 2
1513 || (p == namestring + 1
1514 && namestring[0] != ' '))
1516 add_psymbol_to_list (sym_name, sym_len, 1,
1517 STRUCT_DOMAIN, LOC_TYPEDEF,
1518 &objfile->static_psymbols,
1519 0, psymtab_language, objfile);
1522 /* Also a typedef with the same name. */
1523 add_psymbol_to_list (sym_name, sym_len, 1,
1524 VAR_DOMAIN, LOC_TYPEDEF,
1525 &objfile->static_psymbols,
1526 0, psymtab_language, objfile);
1533 if (p != namestring) /* a name is there, not just :T... */
1535 add_psymbol_to_list (sym_name, sym_len, 1,
1536 VAR_DOMAIN, LOC_TYPEDEF,
1537 &objfile->static_psymbols,
1538 0, psymtab_language, objfile);
1541 /* If this is an enumerated type, we need to
1542 add all the enum constants to the partial symbol
1543 table. This does not cover enums without names, e.g.
1544 "enum {a, b} c;" in C, but fortunately those are
1545 rare. There is no way for GDB to find those from the
1546 enum type without spending too much time on it. Thus
1547 to solve this problem, the compiler needs to put out the
1548 enum in a nameless type. GCC2 does this. */
1550 /* We are looking for something of the form
1551 <name> ":" ("t" | "T") [<number> "="] "e"
1552 {<constant> ":" <value> ","} ";". */
1554 /* Skip over the colon and the 't' or 'T'. */
1556 /* This type may be given a number. Also, numbers can come
1557 in pairs like (0,26). Skip over it. */
1558 while ((*p >= '0' && *p <= '9')
1559 || *p == '(' || *p == ',' || *p == ')'
1565 /* The aix4 compiler emits extra crud before the members. */
1568 /* Skip over the type (?). */
1572 /* Skip over the colon. */
1576 /* We have found an enumerated type. */
1577 /* According to comments in read_enum_type
1578 a comma could end it instead of a semicolon.
1579 I don't know where that happens.
1581 while (*p && *p != ';' && *p != ',')
1585 /* Check for and handle cretinous dbx symbol name
1587 if (*p == '\\' || (*p == '?' && p[1] == '\0'))
1588 p = next_symbol_text (objfile);
1590 /* Point to the character after the name
1591 of the enum constant. */
1592 for (q = p; *q && *q != ':'; q++)
1594 /* Note that the value doesn't matter for
1595 enum constants in psymtabs, just in symtabs. */
1596 add_psymbol_to_list (p, q - p, 1,
1597 VAR_DOMAIN, LOC_CONST,
1598 &objfile->static_psymbols, 0,
1599 psymtab_language, objfile);
1600 /* Point past the name. */
1602 /* Skip over the value. */
1603 while (*p && *p != ',')
1605 /* Advance past the comma. */
1613 /* Constant, e.g. from "const" in Pascal. */
1614 add_psymbol_to_list (sym_name, sym_len, 1,
1615 VAR_DOMAIN, LOC_CONST,
1616 &objfile->static_psymbols, 0,
1617 psymtab_language, objfile);
1623 int name_len = p - namestring;
1624 char *name = (char *) xmalloc (name_len + 1);
1626 memcpy (name, namestring, name_len);
1627 name[name_len] = '\0';
1628 function_outside_compilation_unit_complaint (name);
1631 nlist.n_value += ANOFFSET (objfile->section_offsets,
1632 SECT_OFF_TEXT (objfile));
1633 /* Kludges for ELF/STABS with Sun ACC. */
1634 last_function_name = namestring;
1635 /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
1636 value for the bottom of the text seg in those cases. */
1637 if (nlist.n_value == ANOFFSET (objfile->section_offsets,
1638 SECT_OFF_TEXT (objfile))
1639 && gdbarch_sofun_address_maybe_missing (gdbarch))
1641 CORE_ADDR minsym_valu =
1642 find_stab_function_addr (namestring,
1643 pst ? pst->filename : NULL,
1646 /* find_stab_function_addr will return 0 if the minimal
1647 symbol wasn't found. (Unfortunately, this might also
1648 be a valid address.) Anyway, if it *does* return 0,
1649 it is likely that the value was set correctly to begin
1651 if (minsym_valu != 0)
1652 nlist.n_value = minsym_valu;
1654 if (pst && textlow_not_set
1655 && gdbarch_sofun_address_maybe_missing (gdbarch))
1657 pst->textlow = nlist.n_value;
1658 textlow_not_set = 0;
1662 /* Keep track of the start of the last function so we
1663 can handle end of function symbols. */
1664 last_function_start = nlist.n_value;
1666 /* In reordered executables this function may lie outside
1667 the bounds created by N_SO symbols. If that's the case
1668 use the address of this function as the low bound for
1669 the partial symbol table. */
1672 || (nlist.n_value < pst->textlow
1674 != ANOFFSET (objfile->section_offsets,
1675 SECT_OFF_TEXT (objfile))))))
1677 pst->textlow = nlist.n_value;
1678 textlow_not_set = 0;
1680 add_psymbol_to_list (sym_name, sym_len, 1,
1681 VAR_DOMAIN, LOC_BLOCK,
1682 &objfile->static_psymbols,
1683 nlist.n_value, psymtab_language, objfile);
1686 /* Global functions were ignored here, but now they
1687 are put into the global psymtab like one would expect.
1688 They're also in the minimal symbol table. */
1692 int name_len = p - namestring;
1693 char *name = (char *) xmalloc (name_len + 1);
1695 memcpy (name, namestring, name_len);
1696 name[name_len] = '\0';
1697 function_outside_compilation_unit_complaint (name);
1700 nlist.n_value += ANOFFSET (objfile->section_offsets,
1701 SECT_OFF_TEXT (objfile));
1702 /* Kludges for ELF/STABS with Sun ACC. */
1703 last_function_name = namestring;
1704 /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
1705 value for the bottom of the text seg in those cases. */
1706 if (nlist.n_value == ANOFFSET (objfile->section_offsets,
1707 SECT_OFF_TEXT (objfile))
1708 && gdbarch_sofun_address_maybe_missing (gdbarch))
1710 CORE_ADDR minsym_valu =
1711 find_stab_function_addr (namestring,
1712 pst ? pst->filename : NULL,
1715 /* find_stab_function_addr will return 0 if the minimal
1716 symbol wasn't found. (Unfortunately, this might also
1717 be a valid address.) Anyway, if it *does* return 0,
1718 it is likely that the value was set correctly to begin
1720 if (minsym_valu != 0)
1721 nlist.n_value = minsym_valu;
1723 if (pst && textlow_not_set
1724 && gdbarch_sofun_address_maybe_missing (gdbarch))
1726 pst->textlow = nlist.n_value;
1727 textlow_not_set = 0;
1731 /* Keep track of the start of the last function so we
1732 can handle end of function symbols. */
1733 last_function_start = nlist.n_value;
1735 /* In reordered executables this function may lie outside
1736 the bounds created by N_SO symbols. If that's the case
1737 use the address of this function as the low bound for
1738 the partial symbol table. */
1741 || (nlist.n_value < pst->textlow
1743 != ANOFFSET (objfile->section_offsets,
1744 SECT_OFF_TEXT (objfile))))))
1746 pst->textlow = nlist.n_value;
1747 textlow_not_set = 0;
1749 add_psymbol_to_list (sym_name, sym_len, 1,
1750 VAR_DOMAIN, LOC_BLOCK,
1751 &objfile->global_psymbols,
1752 nlist.n_value, psymtab_language, objfile);
1755 /* Two things show up here (hopefully); static symbols of
1756 local scope (static used inside braces) or extensions
1757 of structure symbols. We can ignore both. */
1771 case '#': /* For symbol identification (used in live ranges). */
1775 /* It is a C++ nested symbol. We don't need to record it
1776 (I don't think); if we try to look up foo::bar::baz,
1777 then symbols for the symtab containing foo should get
1778 read in, I think. */
1779 /* Someone says sun cc puts out symbols like
1780 /foo/baz/maclib::/usr/local/bin/maclib,
1781 which would get here with a symbol type of ':'. */
1785 /* Unexpected symbol descriptor. The second and subsequent stabs
1786 of a continued stab can show up here. The question is
1787 whether they ever can mimic a normal stab--it would be
1788 nice if not, since we certainly don't want to spend the
1789 time searching to the end of every string looking for
1792 complaint (_("unknown symbol descriptor `%c'"),
1795 /* Ignore it; perhaps it is an extension that we don't
1803 namestring = set_namestring (objfile, &nlist);
1805 /* Find the corresponding bincl and mark that psymtab on the
1806 psymtab dependency list. */
1808 struct partial_symtab *needed_pst =
1809 find_corresponding_bincl_psymtab (namestring, nlist.n_value);
1811 /* If this include file was defined earlier in this file,
1813 if (needed_pst == pst)
1821 for (i = 0; i < dependencies_used; i++)
1822 if (dependency_list[i] == needed_pst)
1828 /* If it's already in the list, skip the rest. */
1832 dependency_list[dependencies_used++] = needed_pst;
1833 if (dependencies_used >= dependencies_allocated)
1835 struct partial_symtab **orig = dependency_list;
1838 (struct partial_symtab **)
1839 alloca ((dependencies_allocated *= 2)
1840 * sizeof (struct partial_symtab *));
1841 memcpy (dependency_list, orig,
1843 * sizeof (struct partial_symtab *)));
1845 fprintf_unfiltered (gdb_stderr,
1846 "Had to reallocate "
1847 "dependency list.\n");
1848 fprintf_unfiltered (gdb_stderr,
1849 "New dependencies allocated: %d\n",
1850 dependencies_allocated);
1858 /* Solaris 2 end of module, finish current partial symbol table.
1859 dbx_end_psymtab will set pst->texthigh to the proper value, which
1860 is necessary if a module compiled without debugging info
1861 follows this module. */
1862 if (pst && gdbarch_sofun_address_maybe_missing (gdbarch))
1864 dbx_end_psymtab (objfile, pst,
1865 psymtab_include_list, includes_used,
1866 symnum * symbol_size,
1867 (CORE_ADDR) 0, dependency_list,
1868 dependencies_used, textlow_not_set);
1869 pst = (struct partial_symtab *) 0;
1871 dependencies_used = 0;
1872 has_line_numbers = 0;
1878 HANDLE_RBRAC (nlist.n_value);
1884 case N_SSYM: /* Claim: Structure or union element.
1885 Hopefully, I can ignore this. */
1886 case N_ENTRY: /* Alternate entry point; can ignore. */
1887 case N_MAIN: /* Can definitely ignore this. */
1888 case N_CATCH: /* These are GNU C++ extensions */
1889 case N_EHDECL: /* that can safely be ignored here. */
1901 case N_NSYMS: /* Ultrix 4.0: symbol count */
1902 case N_DEFD: /* GNU Modula-2 */
1903 case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
1905 case N_OBJ: /* Useless types from Solaris. */
1908 /* These symbols aren't interesting; don't worry about them. */
1912 /* If we haven't found it yet, ignore it. It's probably some
1913 new type we don't know about yet. */
1914 unknown_symtype_complaint (hex_string (nlist.n_type));
1919 /* If there's stuff to be cleaned up, clean it up. */
1922 /* Don't set pst->texthigh lower than it already is. */
1923 CORE_ADDR text_end =
1924 (lowest_text_address == (CORE_ADDR) -1
1925 ? (text_addr + ANOFFSET (objfile->section_offsets,
1926 SECT_OFF_TEXT (objfile)))
1927 : lowest_text_address)
1930 dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used,
1931 symnum * symbol_size,
1932 text_end > pst->texthigh ? text_end : pst->texthigh,
1933 dependency_list, dependencies_used, textlow_not_set);
1937 /* Allocate and partially fill a partial symtab. It will be
1938 completely filled at the end of the symbol list.
1940 SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
1941 is the address relative to which its symbols are (incremental) or 0
1944 static struct partial_symtab *
1945 start_psymtab (struct objfile *objfile, const char *filename, CORE_ADDR textlow,
1946 int ldsymoff, std::vector<partial_symbol *> &global_psymbols,
1947 std::vector<partial_symbol *> &static_psymbols)
1949 struct partial_symtab *result =
1950 start_psymtab_common (objfile, filename, textlow,
1951 global_psymbols, static_psymbols);
1953 result->read_symtab_private =
1954 XOBNEW (&objfile->objfile_obstack, struct symloc);
1955 LDSYMOFF (result) = ldsymoff;
1956 result->read_symtab = dbx_read_symtab;
1957 SYMBOL_SIZE (result) = symbol_size;
1958 SYMBOL_OFFSET (result) = symbol_table_offset;
1959 STRING_OFFSET (result) = string_table_offset;
1960 FILE_STRING_OFFSET (result) = file_string_table_offset;
1962 /* Deduce the source language from the filename for this psymtab. */
1963 psymtab_language = deduce_language_from_filename (filename);
1964 PST_LANGUAGE (result) = psymtab_language;
1969 /* Close off the current usage of PST.
1970 Returns PST or NULL if the partial symtab was empty and thrown away.
1972 FIXME: List variables and peculiarities of same. */
1974 struct partial_symtab *
1975 dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst,
1976 const char **include_list, int num_includes,
1977 int capping_symbol_offset, CORE_ADDR capping_text,
1978 struct partial_symtab **dependency_list,
1979 int number_dependencies,
1980 int textlow_not_set)
1983 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1985 if (capping_symbol_offset != -1)
1986 LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst);
1987 pst->texthigh = capping_text;
1989 /* Under Solaris, the N_SO symbols always have a value of 0,
1990 instead of the usual address of the .o file. Therefore,
1991 we have to do some tricks to fill in texthigh and textlow.
1992 The first trick is: if we see a static
1993 or global function, and the textlow for the current pst
1994 is not set (ie: textlow_not_set), then we use that function's
1995 address for the textlow of the pst. */
1997 /* Now, to fill in texthigh, we remember the last function seen
1998 in the .o file. Also, there's a hack in
1999 bfd/elf.c and gdb/elfread.c to pass the ELF st_size field
2000 to here via the misc_info field. Therefore, we can fill in
2001 a reliable texthigh by taking the address plus size of the
2002 last function in the file. */
2004 if (pst->texthigh == 0 && last_function_name
2005 && gdbarch_sofun_address_maybe_missing (gdbarch))
2008 struct bound_minimal_symbol minsym;
2010 const char *colon = strchr (last_function_name, ':');
2014 n = colon - last_function_name;
2015 char *p = (char *) alloca (n + 2);
2016 strncpy (p, last_function_name, n);
2019 minsym = lookup_minimal_symbol (p, pst->filename, objfile);
2020 if (minsym.minsym == NULL)
2022 /* Sun Fortran appends an underscore to the minimal symbol name,
2023 try again with an appended underscore if the minimal symbol
2027 minsym = lookup_minimal_symbol (p, pst->filename, objfile);
2031 pst->texthigh = (BMSYMBOL_VALUE_ADDRESS (minsym)
2032 + MSYMBOL_SIZE (minsym.minsym));
2034 last_function_name = NULL;
2037 if (!gdbarch_sofun_address_maybe_missing (gdbarch))
2039 /* This test will be true if the last .o file is only data. */
2040 else if (textlow_not_set)
2041 pst->textlow = pst->texthigh;
2044 struct partial_symtab *p1;
2046 /* If we know our own starting text address, then walk through all other
2047 psymtabs for this objfile, and if any didn't know their ending text
2048 address, set it to our starting address. Take care to not set our
2049 own ending address to our starting address, nor to set addresses on
2050 `dependency' files that have both textlow and texthigh zero. */
2052 ALL_OBJFILE_PSYMTABS (objfile, p1)
2054 if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst)
2056 p1->texthigh = pst->textlow;
2057 /* If this file has only data, then make textlow match
2059 if (p1->textlow == 0)
2060 p1->textlow = p1->texthigh;
2065 /* End of kludge for patching Solaris textlow and texthigh. */
2067 end_psymtab_common (objfile, pst);
2069 pst->number_of_dependencies = number_dependencies;
2070 if (number_dependencies)
2072 pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack,
2073 struct partial_symtab *,
2074 number_dependencies);
2075 memcpy (pst->dependencies, dependency_list,
2076 number_dependencies * sizeof (struct partial_symtab *));
2079 pst->dependencies = 0;
2081 for (i = 0; i < num_includes; i++)
2083 struct partial_symtab *subpst =
2084 allocate_psymtab (include_list[i], objfile);
2086 subpst->read_symtab_private =
2087 XOBNEW (&objfile->objfile_obstack, struct symloc);
2091 subpst->texthigh = 0;
2093 /* We could save slight bits of space by only making one of these,
2094 shared by the entire set of include files. FIXME-someday. */
2095 subpst->dependencies =
2096 XOBNEW (&objfile->objfile_obstack, struct partial_symtab *);
2097 subpst->dependencies[0] = pst;
2098 subpst->number_of_dependencies = 1;
2100 subpst->globals_offset =
2101 subpst->n_global_syms =
2102 subpst->statics_offset =
2103 subpst->n_static_syms = 0;
2106 subpst->compunit_symtab = 0;
2107 subpst->read_symtab = pst->read_symtab;
2110 if (num_includes == 0
2111 && number_dependencies == 0
2112 && pst->n_global_syms == 0
2113 && pst->n_static_syms == 0
2114 && has_line_numbers == 0)
2116 /* Throw away this psymtab, it's empty. We can't deallocate it, since
2117 it is on the obstack, but we can forget to chain it on the list. */
2118 /* Empty psymtabs happen as a result of header files which don't have
2119 any symbols in them. There can be a lot of them. But this check
2120 is wrong, in that a psymtab with N_SLINE entries but nothing else
2121 is not empty, but we don't realize that. Fixing that without slowing
2122 things down might be tricky. */
2124 discard_psymtab (objfile, pst);
2126 /* Indicate that psymtab was thrown away. */
2133 dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst)
2139 fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. "
2140 "Shouldn't happen.\n",
2145 /* Read in all partial symtabs on which this one is dependent. */
2146 for (i = 0; i < pst->number_of_dependencies; i++)
2147 if (!pst->dependencies[i]->readin)
2149 /* Inform about additional files that need to be read in. */
2152 fputs_filtered (" ", gdb_stdout);
2154 fputs_filtered ("and ", gdb_stdout);
2156 printf_filtered ("%s...", pst->dependencies[i]->filename);
2157 wrap_here (""); /* Flush output. */
2158 gdb_flush (gdb_stdout);
2160 dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]);
2163 if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */
2165 /* Init stuff necessary for reading in symbols */
2168 scoped_free_pendings free_pending;
2169 file_string_table_offset = FILE_STRING_OFFSET (pst);
2170 symbol_size = SYMBOL_SIZE (pst);
2172 /* Read in this file's symbols. */
2173 bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET);
2174 read_ofile_symtab (objfile, pst);
2180 /* Read in all of the symbols for a given psymtab for real.
2181 Be verbose about it if the user wants that. SELF is not NULL. */
2184 dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile)
2188 fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. "
2189 "Shouldn't happen.\n",
2194 if (LDSYMLEN (self) || self->number_of_dependencies)
2196 /* Print the message now, before reading the string table,
2197 to avoid disconcerting pauses. */
2200 printf_filtered ("Reading in symbols for %s...", self->filename);
2201 gdb_flush (gdb_stdout);
2204 next_symbol_text_func = dbx_next_symbol_text;
2207 scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data);
2208 gdb::unique_xmalloc_ptr<gdb_byte> data_holder;
2209 if (DBX_STAB_SECTION (objfile))
2212 = symfile_relocate_debug_section (objfile,
2213 DBX_STAB_SECTION (objfile),
2215 data_holder.reset (stabs_data);
2218 dbx_psymtab_to_symtab_1 (objfile, self);
2221 /* Match with global symbols. This only needs to be done once,
2222 after all of the symtabs and dependencies have been read in. */
2223 scan_file_globals (objfile);
2225 /* Finish up the debug error message. */
2227 printf_filtered ("done.\n");
2231 /* Read in a defined section of a specific object file's symbols. */
2234 read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst)
2236 const char *namestring;
2237 struct external_nlist *bufp;
2238 struct internal_nlist nlist;
2240 unsigned max_symnum;
2242 int sym_offset; /* Offset to start of symbols to read */
2243 int sym_size; /* Size of symbols to read */
2244 CORE_ADDR text_offset; /* Start of text segment for symbols */
2245 int text_size; /* Size of text segment for symbols */
2246 struct section_offsets *section_offsets;
2248 sym_offset = LDSYMOFF (pst);
2249 sym_size = LDSYMLEN (pst);
2250 text_offset = pst->textlow;
2251 text_size = pst->texthigh - pst->textlow;
2252 section_offsets = objfile->section_offsets;
2254 dbxread_objfile = objfile;
2256 stringtab_global = DBX_STRINGTAB (objfile);
2257 set_last_source_file (NULL);
2259 abfd = objfile->obfd;
2260 symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */
2261 symbuf_end = symbuf_idx = 0;
2263 symbuf_left = sym_offset + sym_size;
2265 /* It is necessary to actually read one symbol *before* the start
2266 of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
2267 occurs before the N_SO symbol.
2269 Detecting this in read_dbx_symtab
2270 would slow down initial readin, so we look for it here instead. */
2271 if (!processing_acc_compilation && sym_offset >= (int) symbol_size)
2273 stabs_seek (sym_offset - symbol_size);
2275 bufp = &symbuf[symbuf_idx++];
2276 INTERNALIZE_SYMBOL (nlist, bufp, abfd);
2277 OBJSTAT (objfile, n_stabs++);
2279 namestring = set_namestring (objfile, &nlist);
2281 processing_gcc_compilation = 0;
2282 if (nlist.n_type == N_TEXT)
2284 const char *tempstring = namestring;
2286 if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
2287 processing_gcc_compilation = 1;
2288 else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
2289 processing_gcc_compilation = 2;
2290 if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd))
2292 if (startswith (tempstring, "__gnu_compiled"))
2293 processing_gcc_compilation = 2;
2298 /* The N_SO starting this symtab is the first symbol, so we
2299 better not check the symbol before it. I'm not this can
2300 happen, but it doesn't hurt to check for it. */
2301 stabs_seek (sym_offset);
2302 processing_gcc_compilation = 0;
2305 if (symbuf_idx == symbuf_end)
2307 bufp = &symbuf[symbuf_idx];
2308 if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO)
2309 error (_("First symbol in segment of executable not a source symbol"));
2311 max_symnum = sym_size / symbol_size;
2314 symnum < max_symnum;
2317 QUIT; /* Allow this to be interruptable. */
2318 if (symbuf_idx == symbuf_end)
2320 bufp = &symbuf[symbuf_idx++];
2321 INTERNALIZE_SYMBOL (nlist, bufp, abfd);
2322 OBJSTAT (objfile, n_stabs++);
2324 type = bfd_h_get_8 (abfd, bufp->e_type);
2326 namestring = set_namestring (objfile, &nlist);
2330 if (sizeof (nlist.n_value) > 4
2331 /* We are a 64-bit debugger debugging a 32-bit program. */
2332 && (type == N_LSYM || type == N_PSYM))
2333 /* We have to be careful with the n_value in the case of N_LSYM
2334 and N_PSYM entries, because they are signed offsets from frame
2335 pointer, but we actually read them as unsigned 32-bit values.
2336 This is not a problem for 32-bit debuggers, for which negative
2337 values end up being interpreted correctly (as negative
2338 offsets) due to integer overflow.
2339 But we need to sign-extend the value for 64-bit debuggers,
2340 or we'll end up interpreting negative values as very large
2341 positive offsets. */
2342 nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000;
2343 process_one_symbol (type, nlist.n_desc, nlist.n_value,
2344 namestring, section_offsets, objfile,
2345 PST_LANGUAGE (pst));
2347 /* We skip checking for a new .o or -l file; that should never
2348 happen in this routine. */
2349 else if (type == N_TEXT)
2351 /* I don't think this code will ever be executed, because
2352 the GCC_COMPILED_FLAG_SYMBOL usually is right before
2353 the N_SO symbol which starts this source file.
2354 However, there is no reason not to accept
2355 the GCC_COMPILED_FLAG_SYMBOL anywhere. */
2357 if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
2358 processing_gcc_compilation = 1;
2359 else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
2360 processing_gcc_compilation = 2;
2362 else if (type & N_EXT || type == (unsigned char) N_TEXT
2363 || type == (unsigned char) N_NBTEXT)
2365 /* Global symbol: see if we came across a dbx defintion for
2366 a corresponding symbol. If so, store the value. Remove
2367 syms from the chain when their values are stored, but
2368 search the whole chain, as there may be several syms from
2369 different files with the same name. */
2370 /* This is probably not true. Since the files will be read
2371 in one at a time, each reference to a global symbol will
2372 be satisfied in each file as it appears. So we skip this
2378 /* In a Solaris elf file, this variable, which comes from the
2379 value of the N_SO symbol, will still be 0. Luckily, text_offset,
2380 which comes from pst->textlow is correct. */
2381 if (get_last_source_start_addr () == 0)
2382 set_last_source_start_addr (text_offset);
2384 /* In reordered executables last_source_start_addr may not be the
2385 lower bound for this symtab, instead use text_offset which comes
2386 from pst->textlow which is correct. */
2387 if (get_last_source_start_addr () > text_offset)
2388 set_last_source_start_addr (text_offset);
2390 pst->compunit_symtab = end_symtab (text_offset + text_size,
2391 SECT_OFF_TEXT (objfile));
2395 dbxread_objfile = NULL;
2399 /* Record the namespace that the function defined by SYMBOL was
2400 defined in, if necessary. BLOCK is the associated block; use
2401 OBSTACK for allocation. */
2404 cp_set_block_scope (const struct symbol *symbol,
2405 struct block *block,
2406 struct obstack *obstack)
2408 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL)
2410 /* Try to figure out the appropriate namespace from the
2413 /* FIXME: carlton/2003-04-15: If the function in question is
2414 a method of a class, the name will actually include the
2415 name of the class as well. This should be harmless, but
2416 is a little unfortunate. */
2418 const char *name = SYMBOL_DEMANGLED_NAME (symbol);
2419 unsigned int prefix_len = cp_entire_prefix_len (name);
2421 block_set_scope (block,
2422 (const char *) obstack_copy0 (obstack, name, prefix_len),
2427 /* This handles a single symbol from the symbol-file, building symbols
2428 into a GDB symtab. It takes these arguments and an implicit argument.
2430 TYPE is the type field of the ".stab" symbol entry.
2431 DESC is the desc field of the ".stab" entry.
2432 VALU is the value field of the ".stab" entry.
2433 NAME is the symbol name, in our address space.
2434 SECTION_OFFSETS is a set of amounts by which the sections of this
2435 object file were relocated when it was loaded into memory. Note
2436 that these section_offsets are not the objfile->section_offsets but
2437 the pst->section_offsets. All symbols that refer to memory
2438 locations need to be offset by these amounts.
2439 OBJFILE is the object file from which we are reading symbols. It
2440 is used in end_symtab.
2441 LANGUAGE is the language of the symtab.
2445 process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name,
2446 const struct section_offsets *section_offsets,
2447 struct objfile *objfile, enum language language)
2449 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2450 struct context_stack *newobj;
2451 /* This remembers the address of the start of a function. It is
2452 used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries
2453 are relative to the current function's start address. On systems
2454 other than Solaris 2, this just holds the SECT_OFF_TEXT value,
2455 and is used to relocate these symbol types rather than
2457 static CORE_ADDR function_start_offset;
2459 /* This holds the address of the start of a function, without the
2460 system peculiarities of function_start_offset. */
2461 static CORE_ADDR last_function_start;
2463 /* If this is nonzero, we've seen an N_SLINE since the start of the
2464 current function. We use this to tell us to move the first sline
2465 to the beginning of the function regardless of what its given
2467 static int sline_found_in_function = 1;
2469 /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this
2470 source file. Used to detect the SunPRO solaris compiler. */
2471 static int n_opt_found;
2473 /* Something is wrong if we see real data before seeing a source
2476 if (get_last_source_file () == NULL && type != (unsigned char) N_SO)
2478 /* Ignore any symbols which appear before an N_SO symbol.
2479 Currently no one puts symbols there, but we should deal
2480 gracefully with the case. A complain()t might be in order,
2481 but this should not be an error (). */
2490 if (*name == '\000')
2492 /* This N_FUN marks the end of a function. This closes off
2493 the current block. */
2494 struct block *block;
2496 if (outermost_context_p ())
2498 lbrac_mismatch_complaint (symnum);
2502 /* The following check is added before recording line 0 at
2503 end of function so as to handle hand-generated stabs
2504 which may have an N_FUN stabs at the end of the function,
2505 but no N_SLINE stabs. */
2506 if (sline_found_in_function)
2508 CORE_ADDR addr = last_function_start + valu;
2510 record_line (current_subfile, 0,
2511 gdbarch_addr_bits_remove (gdbarch, addr));
2514 within_function = 0;
2515 newobj = pop_context ();
2517 /* Make a block for the local symbols within. */
2518 block = finish_block (newobj->name, &local_symbols,
2519 newobj->old_blocks, NULL,
2520 newobj->start_addr, newobj->start_addr + valu);
2522 /* For C++, set the block's scope. */
2523 if (SYMBOL_LANGUAGE (newobj->name) == language_cplus)
2524 cp_set_block_scope (newobj->name, block, &objfile->objfile_obstack);
2526 /* May be switching to an assembler file which may not be using
2527 block relative stabs, so reset the offset. */
2528 function_start_offset = 0;
2533 sline_found_in_function = 0;
2535 /* Relocate for dynamic loading. */
2536 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2537 valu = gdbarch_addr_bits_remove (gdbarch, valu);
2538 last_function_start = valu;
2540 goto define_a_symbol;
2543 /* This "symbol" just indicates the start of an inner lexical
2544 context within a function. */
2546 /* Ignore extra outermost context from SunPRO cc and acc. */
2547 if (n_opt_found && desc == 1)
2550 valu += function_start_offset;
2552 push_context (desc, valu);
2556 /* This "symbol" just indicates the end of an inner lexical
2557 context that was started with N_LBRAC. */
2559 /* Ignore extra outermost context from SunPRO cc and acc. */
2560 if (n_opt_found && desc == 1)
2563 valu += function_start_offset;
2565 if (outermost_context_p ())
2567 lbrac_mismatch_complaint (symnum);
2571 newobj = pop_context ();
2572 if (desc != newobj->depth)
2573 lbrac_mismatch_complaint (symnum);
2575 if (local_symbols != NULL)
2577 /* GCC development snapshots from March to December of
2578 2000 would output N_LSYM entries after N_LBRAC
2579 entries. As a consequence, these symbols are simply
2580 discarded. Complain if this is the case. */
2581 complaint (_("misplaced N_LBRAC entry; discarding local "
2582 "symbols which have no enclosing block"));
2584 local_symbols = newobj->locals;
2586 if (context_stack_depth > 1)
2588 /* This is not the outermost LBRAC...RBRAC pair in the
2589 function, its local symbols preceded it, and are the ones
2590 just recovered from the context stack. Define the block
2591 for them (but don't bother if the block contains no
2592 symbols. Should we complain on blocks without symbols?
2593 I can't think of any useful purpose for them). */
2594 if (local_symbols != NULL)
2596 /* Muzzle a compiler bug that makes end < start.
2598 ??? Which compilers? Is this ever harmful?. */
2599 if (newobj->start_addr > valu)
2601 complaint (_("block start larger than block end"));
2602 newobj->start_addr = valu;
2604 /* Make a block for the local symbols within. */
2605 finish_block (0, &local_symbols, newobj->old_blocks, NULL,
2606 newobj->start_addr, valu);
2611 /* This is the outermost LBRAC...RBRAC pair. There is no
2612 need to do anything; leave the symbols that preceded it
2613 to be attached to the function's own block. We need to
2614 indicate that we just moved outside of the function. */
2615 within_function = 0;
2622 /* This kind of symbol indicates the start of an object file.
2623 Relocate for dynamic loading. */
2624 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2628 /* This type of symbol indicates the start of data for one
2629 source file. Finish the symbol table of the previous source
2630 file (if any) and start accumulating a new symbol table.
2631 Relocate for dynamic loading. */
2632 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2636 if (get_last_source_file ())
2638 /* Check if previous symbol was also an N_SO (with some
2639 sanity checks). If so, that one was actually the
2640 directory name, and the current one is the real file
2641 name. Patch things up. */
2642 if (previous_stab_code == (unsigned char) N_SO)
2644 patch_subfile_names (current_subfile, name);
2645 break; /* Ignore repeated SOs. */
2647 end_symtab (valu, SECT_OFF_TEXT (objfile));
2651 /* Null name means this just marks the end of text for this .o
2652 file. Don't start a new symtab in this case. */
2653 if (*name == '\000')
2656 function_start_offset = 0;
2659 start_symtab (objfile, name, NULL, valu, language);
2660 record_debugformat ("stabs");
2664 /* This type of symbol indicates the start of data for a
2665 sub-source-file, one whose contents were copied or included
2666 in the compilation of the main source file (whose name was
2667 given in the N_SO symbol). Relocate for dynamic loading. */
2668 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2669 start_subfile (name);
2674 add_new_header_file (name, valu);
2675 start_subfile (name);
2679 start_subfile (pop_subfile ());
2683 add_old_header_file (name, valu);
2687 /* This type of "symbol" really just records one line-number --
2688 core-address correspondence. Enter it in the line list for
2689 this symbol table. */
2691 /* Relocate for dynamic loading and for ELF acc
2692 function-relative symbols. */
2693 valu += function_start_offset;
2695 /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the
2696 middle of the prologue instead of right at the start of the
2697 function. To deal with this we record the address for the
2698 first N_SLINE stab to be the start of the function instead of
2699 the listed location. We really shouldn't to this. When
2700 compiling with optimization, this first N_SLINE stab might be
2701 optimized away. Other (non-GCC) compilers don't emit this
2702 stab at all. There is no real harm in having an extra
2703 numbered line, although it can be a bit annoying for the
2704 user. However, it totally screws up our testsuite.
2706 So for now, keep adjusting the address of the first N_SLINE
2707 stab, but only for code compiled with GCC. */
2709 if (within_function && sline_found_in_function == 0)
2711 CORE_ADDR addr = processing_gcc_compilation == 2 ?
2712 last_function_start : valu;
2714 record_line (current_subfile, desc,
2715 gdbarch_addr_bits_remove (gdbarch, addr));
2716 sline_found_in_function = 1;
2719 record_line (current_subfile, desc,
2720 gdbarch_addr_bits_remove (gdbarch, valu));
2724 common_block_start (name, objfile);
2728 common_block_end (objfile);
2731 /* The following symbol types need to have the appropriate
2732 offset added to their value; then we process symbol
2733 definitions in the name. */
2735 case N_STSYM: /* Static symbol in data segment. */
2736 case N_LCSYM: /* Static symbol in BSS segment. */
2737 case N_ROSYM: /* Static symbol in read-only data segment. */
2738 /* HORRID HACK DEPT. However, it's Sun's furgin' fault.
2739 Solaris 2's stabs-in-elf makes *most* symbols relative but
2740 leaves a few absolute (at least for Solaris 2.1 and version
2741 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on
2742 the fence. .stab "foo:S...",N_STSYM is absolute (ld
2743 relocates it) .stab "foo:V...",N_STSYM is relative (section
2744 base subtracted). This leaves us no choice but to search for
2745 the 'S' or 'V'... (or pass the whole section_offsets stuff
2746 down ONE MORE function call level, which we really don't want
2751 /* Normal object file and NLMs have non-zero text seg offsets,
2752 but don't need their static syms offset in this fashion.
2753 XXX - This is really a crock that should be fixed in the
2754 solib handling code so that I don't have to work around it
2757 if (!symfile_relocatable)
2759 p = strchr (name, ':');
2760 if (p != 0 && p[1] == 'S')
2762 /* The linker relocated it. We don't want to add a
2763 Sun-stabs Tfoo.foo-like offset, but we *do*
2764 want to add whatever solib.c passed to
2765 symbol_file_add as addr (this is known to affect
2766 SunOS 4, and I suspect ELF too). Since there is no
2767 Ttext.text symbol, we can get addr from the text offset. */
2768 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2769 goto define_a_symbol;
2772 /* Since it's not the kludge case, re-dispatch to the right
2783 internal_error (__FILE__, __LINE__,
2784 _("failed internal consistency check"));
2788 case_N_STSYM: /* Static symbol in data segment. */
2789 case N_DSLINE: /* Source line number, data segment. */
2790 valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
2791 goto define_a_symbol;
2793 case_N_LCSYM: /* Static symbol in BSS segment. */
2794 case N_BSLINE: /* Source line number, BSS segment. */
2795 /* N_BROWS: overlaps with N_BSLINE. */
2796 valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
2797 goto define_a_symbol;
2799 case_N_ROSYM: /* Static symbol in read-only data segment. */
2800 valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile));
2801 goto define_a_symbol;
2803 case N_ENTRY: /* Alternate entry point. */
2804 /* Relocate for dynamic loading. */
2805 valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
2806 goto define_a_symbol;
2808 /* The following symbol types we don't know how to process.
2809 Handle them in a "default" way, but complain to people who
2812 case N_CATCH: /* Exception handler catcher. */
2813 case N_EHDECL: /* Exception handler name. */
2814 case N_PC: /* Global symbol in Pascal. */
2815 case N_M2C: /* Modula-2 compilation unit. */
2816 /* N_MOD2: overlaps with N_EHDECL. */
2817 case N_SCOPE: /* Modula-2 scope information. */
2818 case N_ECOML: /* End common (local name). */
2819 case N_NBTEXT: /* Gould Non-Base-Register symbols??? */
2824 unknown_symtype_complaint (hex_string (type));
2828 /* These symbol types don't need the address field relocated,
2829 since it is either unused, or is absolute. */
2830 case N_GSYM: /* Global variable. */
2831 case N_NSYMS: /* Number of symbols (Ultrix). */
2832 case N_NOMAP: /* No map? (Ultrix). */
2833 case N_RSYM: /* Register variable. */
2834 case N_DEFD: /* Modula-2 GNU module dependency. */
2835 case N_SSYM: /* Struct or union element. */
2836 case N_LSYM: /* Local symbol in stack. */
2837 case N_PSYM: /* Parameter variable. */
2838 case N_LENG: /* Length of preceding symbol type. */
2842 const char *colon_pos = strchr (name, ':');
2844 if (colon_pos == NULL)
2847 deftype = colon_pos[1];
2853 /* Deal with the SunPRO 3.0 compiler which omits the
2854 address from N_FUN symbols. */
2856 && valu == ANOFFSET (section_offsets,
2857 SECT_OFF_TEXT (objfile))
2858 && gdbarch_sofun_address_maybe_missing (gdbarch))
2860 CORE_ADDR minsym_valu =
2861 find_stab_function_addr (name, get_last_source_file (),
2864 /* The function find_stab_function_addr will return
2865 0 if the minimal symbol wasn't found.
2866 (Unfortunately, this might also be a valid
2867 address.) Anyway, if it *does* return 0, it is
2868 likely that the value was set correctly to begin
2870 if (minsym_valu != 0)
2874 /* These addresses are absolute. */
2875 function_start_offset = valu;
2877 within_function = 1;
2879 if (context_stack_depth > 1)
2881 complaint (_("unmatched N_LBRAC before symtab pos %d"),
2886 if (!outermost_context_p ())
2888 struct block *block;
2890 newobj = pop_context ();
2891 /* Make a block for the local symbols within. */
2892 block = finish_block (newobj->name, &local_symbols,
2893 newobj->old_blocks, NULL,
2894 newobj->start_addr, valu);
2896 /* For C++, set the block's scope. */
2897 if (SYMBOL_LANGUAGE (newobj->name) == language_cplus)
2898 cp_set_block_scope (newobj->name, block,
2899 &objfile->objfile_obstack);
2902 newobj = push_context (0, valu);
2903 newobj->name = define_symbol (valu, name, desc, type, objfile);
2907 define_symbol (valu, name, desc, type, objfile);
2913 /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it
2914 for a bunch of other flags, too. Someday we may parse their
2915 flags; for now we ignore theirs and hope they'll ignore ours. */
2916 case N_OPT: /* Solaris 2: Compiler options. */
2919 if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0)
2921 processing_gcc_compilation = 2;
2928 case N_MAIN: /* Name of main routine. */
2929 /* FIXME: If one has a symbol file with N_MAIN and then replaces
2930 it with a symbol file with "main" and without N_MAIN. I'm
2931 not sure exactly what rule to follow but probably something
2932 like: N_MAIN takes precedence over "main" no matter what
2933 objfile it is in; If there is more than one N_MAIN, choose
2934 the one in the symfile_objfile; If there is more than one
2935 N_MAIN within a given objfile, complain() and choose
2936 arbitrarily. (kingdon) */
2938 set_objfile_main_name (objfile, name, language_unknown);
2941 /* The following symbol types can be ignored. */
2942 case N_OBJ: /* Solaris 2: Object file dir and name. */
2943 case N_PATCH: /* Solaris 2: Patch Run Time Checker. */
2944 /* N_UNDF: Solaris 2: File separator mark. */
2945 /* N_UNDF: -- we will never encounter it, since we only process
2946 one file's symbols at once. */
2947 case N_ENDM: /* Solaris 2: End of module. */
2948 case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
2952 /* '#' is a GNU C extension to allow one symbol to refer to another
2955 Generally this is used so that an alias can refer to its main
2960 /* Initialize symbol reference names and determine if this is a
2961 definition. If a symbol reference is being defined, go ahead
2962 and add it. Otherwise, just return. */
2964 const char *s = name;
2967 /* If this stab defines a new reference ID that is not on the
2968 reference list, then put it on the reference list.
2970 We go ahead and advance NAME past the reference, even though
2971 it is not strictly necessary at this time. */
2972 refnum = symbol_reference_defined (&s);
2974 if (!ref_search (refnum))
2975 ref_add (refnum, 0, name, valu);
2979 previous_stab_code = type;
2982 /* FIXME: The only difference between this and elfstab_build_psymtabs
2983 is the call to install_minimal_symbols for elf, and the support for
2984 split sections. If the differences are really that small, the code
2985 should be shared. */
2987 /* Scan and build partial symbols for an coff symbol file.
2988 The coff file has already been processed to get its minimal symbols.
2990 This routine is the equivalent of dbx_symfile_init and dbx_symfile_read
2993 OBJFILE is the object file we are reading symbols from.
2994 ADDR is the address relative to which the symbols are (e.g.
2995 the base address of the text segment).
2996 TEXTADDR is the address of the text section.
2997 TEXTSIZE is the size of the text section.
2998 STABSECTS is the list of .stab sections in OBJFILE.
2999 STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the
3000 .stabstr section exists.
3002 This routine is mostly copied from dbx_symfile_init and dbx_symfile_read,
3003 adjusted for coff details. */
3006 coffstab_build_psymtabs (struct objfile *objfile,
3007 CORE_ADDR textaddr, unsigned int textsize,
3008 struct stab_section_list *stabsects,
3009 file_ptr stabstroffset, unsigned int stabstrsize)
3012 bfd *sym_bfd = objfile->obfd;
3013 char *name = bfd_get_filename (sym_bfd);
3014 unsigned int stabsize;
3016 DBX_TEXT_ADDR (objfile) = textaddr;
3017 DBX_TEXT_SIZE (objfile) = textsize;
3019 #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */
3020 DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE;
3021 DBX_STRINGTAB_SIZE (objfile) = stabstrsize;
3023 if (stabstrsize > bfd_get_size (sym_bfd))
3024 error (_("ridiculous string table size: %d bytes"), stabstrsize);
3025 DBX_STRINGTAB (objfile) = (char *)
3026 obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1);
3027 OBJSTAT (objfile, sz_strtab += stabstrsize + 1);
3029 /* Now read in the string table in one big gulp. */
3031 val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET);
3033 perror_with_name (name);
3034 val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd);
3035 if (val != stabstrsize)
3036 perror_with_name (name);
3038 stabsread_new_init ();
3040 free_header_files ();
3041 init_header_files ();
3043 processing_acc_compilation = 1;
3045 /* In a coff file, we've already installed the minimal symbols that came
3046 from the coff (non-stab) symbol table, so always act like an
3047 incremental load here. */
3048 if (stabsects->next == NULL)
3050 stabsize = bfd_section_size (sym_bfd, stabsects->section);
3051 DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile);
3052 DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos;
3056 struct stab_section_list *stabsect;
3058 DBX_SYMCOUNT (objfile) = 0;
3059 for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next)
3061 stabsize = bfd_section_size (sym_bfd, stabsect->section);
3062 DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile);
3065 DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos;
3067 symbuf_sections = stabsects->next;
3068 symbuf_left = bfd_section_size (sym_bfd, stabsects->section);
3072 dbx_symfile_read (objfile, 0);
3075 /* Scan and build partial symbols for an ELF symbol file.
3076 This ELF file has already been processed to get its minimal symbols.
3078 This routine is the equivalent of dbx_symfile_init and dbx_symfile_read
3081 OBJFILE is the object file we are reading symbols from.
3082 ADDR is the address relative to which the symbols are (e.g.
3083 the base address of the text segment).
3084 STABSECT is the BFD section information for the .stab section.
3085 STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the
3086 .stabstr section exists.
3088 This routine is mostly copied from dbx_symfile_init and dbx_symfile_read,
3089 adjusted for elf details. */
3092 elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect,
3093 file_ptr stabstroffset, unsigned int stabstrsize)
3096 bfd *sym_bfd = objfile->obfd;
3097 char *name = bfd_get_filename (sym_bfd);
3099 /* Find the first and last text address. dbx_symfile_read seems to
3101 find_text_range (sym_bfd, objfile);
3103 #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */
3104 DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE;
3105 DBX_SYMCOUNT (objfile)
3106 = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile);
3107 DBX_STRINGTAB_SIZE (objfile) = stabstrsize;
3108 DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos;
3109 DBX_STAB_SECTION (objfile) = stabsect;
3111 if (stabstrsize > bfd_get_size (sym_bfd))
3112 error (_("ridiculous string table size: %d bytes"), stabstrsize);
3113 DBX_STRINGTAB (objfile) = (char *)
3114 obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1);
3115 OBJSTAT (objfile, sz_strtab += stabstrsize + 1);
3117 /* Now read in the string table in one big gulp. */
3119 val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET);
3121 perror_with_name (name);
3122 val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd);
3123 if (val != stabstrsize)
3124 perror_with_name (name);
3126 stabsread_new_init ();
3128 free_header_files ();
3129 init_header_files ();
3131 processing_acc_compilation = 1;
3134 symbuf_left = bfd_section_size (objfile->obfd, stabsect);
3136 scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data);
3137 gdb::unique_xmalloc_ptr<gdb_byte> data_holder;
3139 stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL);
3141 data_holder.reset (stabs_data);
3143 /* In an elf file, we've already installed the minimal symbols that came
3144 from the elf (non-stab) symbol table, so always act like an
3145 incremental load here. dbx_symfile_read should not generate any new
3146 minimal symbols, since we will have already read the ELF dynamic symbol
3147 table and normal symbol entries won't be in the ".stab" section; but in
3148 case it does, it will install them itself. */
3149 dbx_symfile_read (objfile, 0);
3152 /* Scan and build partial symbols for a file with special sections for stabs
3153 and stabstrings. The file has already been processed to get its minimal
3154 symbols, and any other symbols that might be necessary to resolve GSYMs.
3156 This routine is the equivalent of dbx_symfile_init and dbx_symfile_read
3159 OBJFILE is the object file we are reading symbols from.
3160 ADDR is the address relative to which the symbols are (e.g. the base address
3161 of the text segment).
3162 STAB_NAME is the name of the section that contains the stabs.
3163 STABSTR_NAME is the name of the section that contains the stab strings.
3165 This routine is mostly copied from dbx_symfile_init and
3166 dbx_symfile_read. */
3169 stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
3170 char *stabstr_name, char *text_name)
3173 bfd *sym_bfd = objfile->obfd;
3174 char *name = bfd_get_filename (sym_bfd);
3176 asection *stabstrsect;
3177 asection *text_sect;
3178 struct dbx_symfile_info *dbx;
3180 stabsect = bfd_get_section_by_name (sym_bfd, stab_name);
3181 stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name);
3187 error (_("stabsect_build_psymtabs: Found stabs (%s), "
3188 "but not string section (%s)"),
3189 stab_name, stabstr_name);
3191 dbx = XCNEW (struct dbx_symfile_info);
3192 set_objfile_data (objfile, dbx_objfile_data_key, dbx);
3194 text_sect = bfd_get_section_by_name (sym_bfd, text_name);
3196 error (_("Can't find %s section in symbol file"), text_name);
3197 DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
3198 DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
3200 DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist);
3201 DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect)
3202 / DBX_SYMBOL_SIZE (objfile);
3203 DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect);
3204 DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING
3208 if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd))
3209 error (_("ridiculous string table size: %d bytes"),
3210 DBX_STRINGTAB_SIZE (objfile));
3211 DBX_STRINGTAB (objfile) = (char *)
3212 obstack_alloc (&objfile->objfile_obstack,
3213 DBX_STRINGTAB_SIZE (objfile) + 1);
3214 OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1);
3216 /* Now read in the string table in one big gulp. */
3218 val = bfd_get_section_contents (sym_bfd, /* bfd */
3219 stabstrsect, /* bfd section */
3220 DBX_STRINGTAB (objfile), /* input buffer */
3221 0, /* offset into section */
3222 DBX_STRINGTAB_SIZE (objfile)); /* amount to
3226 perror_with_name (name);
3228 stabsread_new_init ();
3230 free_header_files ();
3231 init_header_files ();
3233 /* Now, do an incremental load. */
3235 processing_acc_compilation = 1;
3236 dbx_symfile_read (objfile, 0);
3239 static const struct sym_fns aout_sym_fns =
3241 dbx_new_init, /* init anything gbl to entire symtab */
3242 dbx_symfile_init, /* read initial info, setup for sym_read() */
3243 dbx_symfile_read, /* read a symbol file into symtab */
3244 NULL, /* sym_read_psymbols */
3245 dbx_symfile_finish, /* finished with file, cleanup */
3246 default_symfile_offsets, /* parse user's offsets to internal form */
3247 default_symfile_segments, /* Get segment information from a file. */
3249 default_symfile_relocate, /* Relocate a debug section. */
3250 NULL, /* sym_probe_fns */
3255 _initialize_dbxread (void)
3257 add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns);
3259 dbx_objfile_data_key
3260 = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info);