1 /* Read dbx symbol tables and convert to internal format, for GDB.
2 Copyright (C) 1986-1991 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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* This module provides three functions: dbx_symfile_init,
21 which initializes to read a symbol file; dbx_new_init, which
22 discards existing cached information when all symbols are being
23 discarded; and dbx_symfile_read, which reads a symbol table
26 dbx_symfile_read only does the minimum work necessary for letting the
27 user "name" things symbolically; it does not read the entire symtab.
28 Instead, it reads the external and static symbols and puts them in partial
29 symbol tables. When more extensive information is requested of a
30 file, the corresponding partial symbol table is mutated into a full
31 fledged symbol table by going back and reading the symbols
32 for real. dbx_psymtab_to_symtab() is the function that does this */
39 #include <sys/types.h>
46 #include <sys/param.h>
51 #include "breakpoint.h"
54 #include "gdbcore.h" /* for bfd stuff */
55 #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
59 #include "aout/aout64.h"
60 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */
62 /* Information is passed among various dbxread routines for accessing
63 symbol files. A pointer to this structure is kept in the sym_private
64 field of the struct sym_fns passed in by symfile.h. */
66 struct dbx_symfile_info
{
67 asection
*text_sect
; /* Text section accessor */
68 int symcount
; /* How many symbols are there in the file */
69 char *stringtab
; /* The actual string table */
70 int stringtab_size
; /* Its size */
71 off_t symtab_offset
; /* Offset in file to symbol table */
75 /* Each partial symbol table entry contains a pointer to private data for the
76 read_symtab() function to use when expanding a partial symbol table entry
77 to a full symbol table entry.
79 For dbxread this structure contains the offset within the file symbol table
80 of first local symbol for this file, and length (in bytes) of the section
81 of the symbol table devoted to this file's symbols (actually, the section
82 bracketed may contain more than just this file's symbols). If ldsymlen is
83 0, the only reason for this thing's existence is the dependency list.
84 Nothing else will happen when it is read in. */
86 #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
87 #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
95 extern double atof ();
97 /* Forward declarations */
99 static void read_dbx_symtab ();
100 static void init_psymbol_list ();
101 extern void process_one_symbol ();
102 void start_subfile ();
104 static struct pending
*copy_pending ();
105 static struct symtab
*read_ofile_symtab ();
106 static void dbx_psymtab_to_symtab ();
108 /* Macro to determine which symbols to ignore when reading the first symbol
109 of a file. Some machines override this definition. */
110 #ifndef IGNORE_SYMBOL
111 /* This code is used on Ultrix systems. Ignore it */
112 #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS)
115 /* Macro for name of symbol to indicate a file compiled with gcc. */
116 #ifndef GCC_COMPILED_FLAG_SYMBOL
117 #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled."
120 /* Define this as 1 if a pcc declaration of a char or short argument
121 gives the correct address. Otherwise assume pcc gives the
122 address of the corresponding int, which is not the same on a
123 big-endian machine. */
125 #ifndef BELIEVE_PCC_PROMOTION
126 #define BELIEVE_PCC_PROMOTION 0
129 /* Nonzero means give verbose info on gdb action. From main.c. */
130 extern int info_verbose
;
132 /* The BFD for this file -- implicit parameter to next_symbol_text. */
134 static bfd
*symfile_bfd
;
136 /* The objfile for this file -- only good in process_one_symbol(). */
138 static struct objfile
*our_objfile
;
140 /* String table for the main symbol file. It is kept in memory
141 permanently, to speed up symbol reading. Other files' symbol tables
142 are read in on demand. FIXME, this should be cleaner. */
144 static char *symfile_string_table
;
145 static int symfile_string_table_size
;
147 /* The size of each symbol in the symbol file (in external form).
148 This is set by dbx_symfile_read when building psymtabs, and by
149 dbx_psymtab_to_symtab when building symtabs. */
151 static unsigned symbol_size
;
153 /* Complaints about the symbols we have encountered. */
155 struct complaint lbrac_complaint
=
156 {"bad block start address patched", 0, 0};
158 struct complaint string_table_offset_complaint
=
159 {"bad string table offset in symbol %d", 0, 0};
161 struct complaint unknown_symtype_complaint
=
162 {"unknown symbol type %s", 0, 0};
164 struct complaint lbrac_rbrac_complaint
=
165 {"block start larger than block end", 0, 0};
167 struct complaint lbrac_unmatched_complaint
=
168 {"unmatched N_LBRAC before symtab pos %d", 0, 0};
170 struct complaint lbrac_mismatch_complaint
=
171 {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0};
173 /* During initial symbol readin, we need to have a structure to keep
174 track of which psymtabs have which bincls in them. This structure
175 is used during readin to setup the list of dependencies within each
176 partial symbol table. */
178 struct header_file_location
180 char *name
; /* Name of header file */
181 int instance
; /* See above */
182 struct partial_symtab
*pst
; /* Partial symtab that has the
183 BINCL/EINCL defs for this file */
186 /* The actual list and controling variables */
187 static struct header_file_location
*bincl_list
, *next_bincl
;
188 static int bincls_allocated
;
190 /* Free up old header file tables, and allocate new ones.
191 We're reading a new symbol file now. */
194 free_and_init_header_files ()
197 for (i
= 0; i
< n_header_files
; i
++)
198 free (header_files
[i
].name
);
199 if (header_files
) /* First time null */
201 if (this_object_header_files
) /* First time null */
202 free (this_object_header_files
);
204 n_allocated_header_files
= 10;
205 header_files
= (struct header_file
*) xmalloc (10 * sizeof (struct header_file
));
208 n_allocated_this_object_header_files
= 10;
209 this_object_header_files
= (int *) xmalloc (10 * sizeof (int));
212 /* Called at the start of each object file's symbols.
213 Clear out the mapping of header file numbers to header files. */
216 new_object_header_files ()
218 /* Leave FILENUM of 0 free for builtin types and this file's types. */
219 n_this_object_header_files
= 1;
220 header_file_prev_index
= -1;
223 /* Add header file number I for this object file
224 at the next successive FILENUM. */
227 add_this_object_header_file (i
)
230 if (n_this_object_header_files
== n_allocated_this_object_header_files
)
232 n_allocated_this_object_header_files
*= 2;
233 this_object_header_files
234 = (int *) xrealloc (this_object_header_files
,
235 n_allocated_this_object_header_files
* sizeof (int));
238 this_object_header_files
[n_this_object_header_files
++] = i
;
241 /* Add to this file an "old" header file, one already seen in
242 a previous object file. NAME is the header file's name.
243 INSTANCE is its instance code, to select among multiple
244 symbol tables for the same header file. */
247 add_old_header_file (name
, instance
)
251 register struct header_file
*p
= header_files
;
254 for (i
= 0; i
< n_header_files
; i
++)
255 if (!strcmp (p
[i
].name
, name
) && instance
== p
[i
].instance
)
257 add_this_object_header_file (i
);
260 error ("Invalid symbol data: \"repeated\" header file that hasn't been seen before, at symtab pos %d.",
264 /* Add to this file a "new" header file: definitions for its types follow.
265 NAME is the header file's name.
266 Most often this happens only once for each distinct header file,
267 but not necessarily. If it happens more than once, INSTANCE has
268 a different value each time, and references to the header file
269 use INSTANCE values to select among them.
271 dbx output contains "begin" and "end" markers for each new header file,
272 but at this level we just need to know which files there have been;
273 so we record the file when its "begin" is seen and ignore the "end". */
276 add_new_header_file (name
, instance
)
281 header_file_prev_index
= -1;
283 /* Make sure there is room for one more header file. */
285 if (n_header_files
== n_allocated_header_files
)
287 n_allocated_header_files
*= 2;
288 header_files
= (struct header_file
*)
289 xrealloc (header_files
,
290 (n_allocated_header_files
291 * sizeof (struct header_file
)));
294 /* Create an entry for this header file. */
296 i
= n_header_files
++;
297 header_files
[i
].name
= savestring (name
, strlen(name
));
298 header_files
[i
].instance
= instance
;
299 header_files
[i
].length
= 10;
300 header_files
[i
].vector
301 = (struct type
**) xmalloc (10 * sizeof (struct type
*));
302 bzero (header_files
[i
].vector
, 10 * sizeof (struct type
*));
304 add_this_object_header_file (i
);
308 static struct type
**
309 explicit_lookup_type (real_filenum
, index
)
310 int real_filenum
, index
;
312 register struct header_file
*f
= &header_files
[real_filenum
];
314 if (index
>= f
->length
)
317 f
->vector
= (struct type
**)
318 xrealloc (f
->vector
, f
->length
* sizeof (struct type
*));
319 bzero (&f
->vector
[f
->length
/ 2],
320 f
->length
* sizeof (struct type
*) / 2);
322 return &f
->vector
[index
];
327 record_misc_function (name
, address
, type
)
332 enum misc_function_type misc_type
;
334 switch (type
&~ N_EXT
) {
335 case N_TEXT
: misc_type
= mf_text
; break;
336 case N_DATA
: misc_type
= mf_data
; break;
337 case N_BSS
: misc_type
= mf_bss
; break;
338 case N_ABS
: misc_type
= mf_abs
; break;
340 case N_SETV
: misc_type
= mf_data
; break;
342 default: misc_type
= mf_unknown
; break;
345 prim_record_misc_function (obsavestring (name
, strlen (name
)),
349 /* Scan and build partial symbols for a symbol file.
350 We have been initialized by a call to dbx_symfile_init, which
351 put all the relevant info into a "struct dbx_symfile_info"
352 hung off the struct sym_fns SF.
354 ADDR is the address relative to which the symbols in it are (e.g.
355 the base address of the text segment).
356 MAINLINE is true if we are reading the main symbol
357 table (as opposed to a shared lib or dynamically loaded file). */
360 dbx_symfile_read (sf
, addr
, mainline
)
363 int mainline
; /* FIXME comments above */
365 struct dbx_symfile_info
*info
= (struct dbx_symfile_info
*) (sf
->sym_private
);
366 bfd
*sym_bfd
= sf
->objfile
->obfd
;
369 val
= bfd_seek (sf
->objfile
->obfd
, info
->symtab_offset
, L_SET
);
371 perror_with_name (sf
->objfile
->name
);
373 /* If mainline, set global string table pointers, and reinitialize global
374 partial symbol list. */
376 symfile_string_table
= info
->stringtab
;
377 symfile_string_table_size
= info
->stringtab_size
;
380 /* If we are reinitializing, or if we have never loaded syms yet, init */
381 if (mainline
|| global_psymbols
.size
== 0 || static_psymbols
.size
== 0)
382 init_psymbol_list (info
->symcount
);
384 /* FIXME POKING INSIDE BFD DATA STRUCTURES */
385 symbol_size
= obj_symbol_entry_size (sym_bfd
);
388 make_cleanup (really_free_pendings
, 0);
390 init_misc_bunches ();
391 make_cleanup (discard_misc_bunches
, 0);
393 /* Now that the symbol table data of the executable file are all in core,
394 process them and define symbols accordingly. */
396 read_dbx_symtab (addr
- bfd_section_vma (sym_bfd
, info
->text_sect
), /*offset*/
397 sf
->objfile
, info
->stringtab
, info
->stringtab_size
,
399 bfd_section_vma (sym_bfd
, info
->text_sect
),
400 bfd_section_size (sym_bfd
, info
->text_sect
));
402 /* Go over the misc symbol bunches and install them in vector. */
404 condense_misc_bunches (!mainline
);
406 /* Free up any memory we allocated for ourselves. */
409 free (info
->stringtab
); /* Stringtab is only saved for mainline */
412 sf
->sym_private
= 0; /* Zap pointer to our (now gone) info struct */
414 if (!partial_symtab_list
) {
416 printf_filtered ("(no debugging symbols found)...");
421 /* Initialize anything that needs initializing when a completely new
422 symbol file is specified (not just adding some symbols from another
423 file, e.g. a shared library). */
428 buildsym_new_init ();
430 /* Don't put these on the cleanup chain; they need to stick around
431 until the next call to dbx_new_init. *Then* we'll free them. */
432 if (symfile_string_table
)
434 free (symfile_string_table
);
435 symfile_string_table
= 0;
436 symfile_string_table_size
= 0;
438 free_and_init_header_files ();
442 /* dbx_symfile_init ()
443 is the dbx-specific initialization routine for reading symbols.
444 It is passed a struct sym_fns which contains, among other things,
445 the BFD for the file whose symbols are being read, and a slot for a pointer
446 to "private data" which we fill with goodies.
448 We read the string table into malloc'd space and stash a pointer to it.
450 Since BFD doesn't know how to read debug symbols in a format-independent
451 way (and may never do so...), we have to do it ourselves. We will never
452 be called unless this is an a.out (or very similar) file.
453 FIXME, there should be a cleaner peephole into the BFD environment here. */
456 dbx_symfile_init (sf
)
460 bfd
*sym_bfd
= sf
->objfile
->obfd
;
461 char *name
= bfd_get_filename (sym_bfd
);
462 struct dbx_symfile_info
*info
;
463 unsigned char size_temp
[4];
465 /* Allocate struct to keep track of the symfile */
466 sf
->sym_private
= xmalloc (sizeof (*info
));
467 info
= (struct dbx_symfile_info
*)sf
->sym_private
;
469 /* FIXME POKING INSIDE BFD DATA STRUCTURES */
470 #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd))
471 #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd))
472 /* FIXME POKING INSIDE BFD DATA STRUCTURES */
474 info
->text_sect
= bfd_get_section_by_name (sym_bfd
, ".text");
475 if (!info
->text_sect
)
477 info
->symcount
= bfd_get_symcount (sym_bfd
);
479 /* Read the string table size and check it for bogosity. */
480 val
= bfd_seek (sym_bfd
, STRING_TABLE_OFFSET
, L_SET
);
482 perror_with_name (name
);
484 val
= bfd_read (size_temp
, sizeof (long), 1, sym_bfd
);
486 perror_with_name (name
);
487 info
->stringtab_size
= bfd_h_get_32 (sym_bfd
, size_temp
);
489 if (info
->stringtab_size
>= 0)
491 info
->stringtab
= (char *) xmalloc (info
->stringtab_size
);
492 /* Caller is responsible for freeing the string table. No cleanup. */
495 info
->stringtab
= NULL
;
496 if (info
->stringtab
== NULL
&& info
->stringtab_size
!= 0)
497 error ("ridiculous string table size: %d bytes", info
->stringtab_size
);
499 /* Now read in the string table in one big gulp. */
501 val
= bfd_seek (sym_bfd
, STRING_TABLE_OFFSET
, L_SET
);
503 perror_with_name (name
);
504 val
= bfd_read (info
->stringtab
, info
->stringtab_size
, 1, sym_bfd
);
505 if (val
!= info
->stringtab_size
)
506 perror_with_name (name
);
508 /* Record the position of the symbol table for later use. */
510 info
->symtab_offset
= SYMBOL_TABLE_OFFSET
;
513 /* Buffer for reading the symbol table entries. */
514 static struct internal_nlist symbuf
[4096];
515 static int symbuf_idx
;
516 static int symbuf_end
;
518 /* The address in memory of the string table of the object file we are
519 reading (which might not be the "main" object file, but might be a
520 shared library or some other dynamically loaded thing). This is set
521 by read_dbx_symtab when building psymtabs, and by read_ofile_symtab
522 when building symtabs, and is used only by next_symbol_text. */
523 static char *stringtab_global
;
525 /* Refill the symbol table input buffer
526 and set the variables that control fetching entries from it.
527 Reports an error if no data available.
528 This function can read past the end of the symbol table
529 (into the string table) but this does no harm. */
532 fill_symbuf (sym_bfd
)
535 int nbytes
= bfd_read (symbuf
, sizeof (symbuf
), 1, sym_bfd
);
537 perror_with_name (bfd_get_filename (sym_bfd
));
538 else if (nbytes
== 0)
539 error ("Premature end of file reading symbol table");
540 symbuf_end
= nbytes
/ symbol_size
;
544 #define SWAP_SYMBOL(symp, abfd) \
546 (symp)->n_strx = bfd_h_get_32(abfd, \
547 (unsigned char *)&(symp)->n_strx); \
548 (symp)->n_desc = bfd_h_get_16 (abfd, \
549 (unsigned char *)&(symp)->n_desc); \
550 (symp)->n_value = bfd_h_get_32 (abfd, \
551 (unsigned char *)&(symp)->n_value); \
554 /* Invariant: The symbol pointed to by symbuf_idx is the first one
555 that hasn't been swapped. Swap the symbol at the same time
556 that symbuf_idx is incremented. */
558 /* dbx allows the text of a symbol name to be continued into the
559 next symbol name! When such a continuation is encountered
560 (a \ at the end of the text of a name)
561 call this function to get the continuation. */
564 dbx_next_symbol_text ()
566 if (symbuf_idx
== symbuf_end
)
567 fill_symbuf (symfile_bfd
);
569 SWAP_SYMBOL(&symbuf
[symbuf_idx
], symfile_bfd
);
570 return symbuf
[symbuf_idx
++].n_strx
+ stringtab_global
;
573 /* Initializes storage for all of the partial symbols that will be
574 created by read_dbx_symtab and subsidiaries. */
577 init_psymbol_list (total_symbols
)
580 /* Free any previously allocated psymbol lists. */
581 if (global_psymbols
.list
)
582 free (global_psymbols
.list
);
583 if (static_psymbols
.list
)
584 free (static_psymbols
.list
);
586 /* Current best guess is that there are approximately a twentieth
587 of the total symbols (in a debugging file) are global or static
589 global_psymbols
.size
= total_symbols
/ 10;
590 static_psymbols
.size
= total_symbols
/ 10;
591 global_psymbols
.next
= global_psymbols
.list
= (struct partial_symbol
*)
592 xmalloc (global_psymbols
.size
* sizeof (struct partial_symbol
));
593 static_psymbols
.next
= static_psymbols
.list
= (struct partial_symbol
*)
594 xmalloc (static_psymbols
.size
* sizeof (struct partial_symbol
));
597 /* Initialize the list of bincls to contain none and have some
601 init_bincl_list (number
)
604 bincls_allocated
= number
;
605 next_bincl
= bincl_list
= (struct header_file_location
*)
606 xmalloc (bincls_allocated
* sizeof(struct header_file_location
));
609 /* Add a bincl to the list. */
612 add_bincl_to_list (pst
, name
, instance
)
613 struct partial_symtab
*pst
;
617 if (next_bincl
>= bincl_list
+ bincls_allocated
)
619 int offset
= next_bincl
- bincl_list
;
620 bincls_allocated
*= 2;
621 bincl_list
= (struct header_file_location
*)
622 xrealloc ((char *)bincl_list
,
623 bincls_allocated
* sizeof (struct header_file_location
));
624 next_bincl
= bincl_list
+ offset
;
626 next_bincl
->pst
= pst
;
627 next_bincl
->instance
= instance
;
628 next_bincl
++->name
= name
;
631 /* Given a name, value pair, find the corresponding
632 bincl in the list. Return the partial symtab associated
633 with that header_file_location. */
635 static struct partial_symtab
*
636 find_corresponding_bincl_psymtab (name
, instance
)
640 struct header_file_location
*bincl
;
642 for (bincl
= bincl_list
; bincl
< next_bincl
; bincl
++)
643 if (bincl
->instance
== instance
644 && !strcmp (name
, bincl
->name
))
647 return (struct partial_symtab
*) 0;
650 /* Free the storage allocated for the bincl list. */
656 bincls_allocated
= 0;
659 /* Given pointers to an a.out symbol table in core containing dbx
660 style data, setup partial_symtab's describing each source file for
661 which debugging information is available. NLISTLEN is the number
662 of symbols in the symbol table. All symbol names are given as
663 offsets relative to STRINGTAB. STRINGTAB_SIZE is the size of
664 STRINGTAB. SYMFILE_NAME is the name of the file we are reading from
665 and ADDR is its relocated address (if incremental) or 0 (if not). */
668 read_dbx_symtab (addr
, objfile
, stringtab
, stringtab_size
, nlistlen
,
669 text_addr
, text_size
)
671 struct objfile
*objfile
;
672 register char *stringtab
;
673 register long stringtab_size
;
674 register int nlistlen
;
678 register struct internal_nlist
*bufp
;
679 register char *namestring
;
681 int past_first_source_file
= 0;
682 CORE_ADDR last_o_file_start
= 0;
683 struct cleanup
*old_chain
;
686 /* End of the text segment of the executable file. */
687 CORE_ADDR end_of_text_addr
;
689 /* Current partial symtab */
690 struct partial_symtab
*pst
;
692 /* List of current psymtab's include files */
693 char **psymtab_include_list
;
694 int includes_allocated
;
697 /* Index within current psymtab dependency list */
698 struct partial_symtab
**dependency_list
;
699 int dependencies_used
, dependencies_allocated
;
701 stringtab_global
= stringtab
;
703 pst
= (struct partial_symtab
*) 0;
705 includes_allocated
= 30;
707 psymtab_include_list
= (char **) alloca (includes_allocated
*
710 dependencies_allocated
= 30;
711 dependencies_used
= 0;
713 (struct partial_symtab
**) alloca (dependencies_allocated
*
714 sizeof (struct partial_symtab
*));
716 old_chain
= make_cleanup (free_objfile
, objfile
);
718 /* Init bincl list */
719 init_bincl_list (20);
720 make_cleanup (free_bincl_list
, 0);
722 last_source_file
= 0;
724 #ifdef END_OF_TEXT_DEFAULT
725 end_of_text_addr
= END_OF_TEXT_DEFAULT
;
727 end_of_text_addr
= text_addr
+ addr
+ text_size
; /* Relocate */
730 symfile_bfd
= objfile
->obfd
; /* For next_text_symbol */
731 abfd
= objfile
->obfd
;
732 symbuf_end
= symbuf_idx
= 0;
733 next_symbol_text_func
= dbx_next_symbol_text
;
735 for (symnum
= 0; symnum
< nlistlen
; symnum
++)
737 /* Get the symbol for this run and pull out some info */
738 QUIT
; /* allow this to be interruptable */
739 if (symbuf_idx
== symbuf_end
)
741 bufp
= &symbuf
[symbuf_idx
++];
744 * Special case to speed up readin.
746 if (bufp
->n_type
== (unsigned char)N_SLINE
) continue;
748 SWAP_SYMBOL (bufp
, abfd
);
750 /* Ok. There is a lot of code duplicated in the rest of this
751 switch statement (for efficiency reasons). Since I don't
752 like duplicating code, I will do my penance here, and
753 describe the code which is duplicated:
755 *) The assignment to namestring.
756 *) The call to strchr.
757 *) The addition of a partial symbol the the two partial
758 symbol lists. This last is a large section of code, so
759 I've imbedded it in the following macro.
762 /* Set namestring based on bufp. If the string table index is invalid,
763 give a fake name, and print a single error message per symbol file read,
764 rather than abort the symbol reading or flood the user with messages. */
765 #define SET_NAMESTRING()\
766 if (((unsigned)bufp->n_strx) >= stringtab_size) { \
767 complain (&string_table_offset_complaint, symnum); \
768 namestring = "foo"; \
770 namestring = bufp->n_strx + stringtab
772 #define CUR_SYMBOL_TYPE bufp->n_type
773 #define CUR_SYMBOL_VALUE bufp->n_value
775 #define START_PSYMTAB(ofile,addr,fname,low,symoff,global_syms,static_syms)\
776 start_psymtab(ofile, addr, fname, low, symoff, global_syms, static_syms)
777 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\
778 end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)
780 #include "partial-stab.h"
783 /* If there's stuff to be cleaned up, clean it up. */
784 if (nlistlen
> 0 /* We have some syms */
785 && entry_point
< bufp
->n_value
786 && entry_point
>= last_o_file_start
)
788 startup_file_start
= last_o_file_start
;
789 startup_file_end
= bufp
->n_value
;
794 end_psymtab (pst
, psymtab_include_list
, includes_used
,
795 symnum
* symbol_size
, end_of_text_addr
,
796 dependency_list
, dependencies_used
);
800 discard_cleanups (old_chain
);
803 /* Allocate and partially fill a partial symtab. It will be
804 completely filled at the end of the symbol list.
806 SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
807 is the address relative to which its symbols are (incremental) or 0
811 struct partial_symtab
*
812 start_psymtab (objfile
, addr
,
813 filename
, textlow
, ldsymoff
, global_syms
, static_syms
)
814 struct objfile
*objfile
;
819 struct partial_symbol
*global_syms
;
820 struct partial_symbol
*static_syms
;
822 struct partial_symtab
*result
=
823 (struct partial_symtab
*) obstack_alloc (psymbol_obstack
,
824 sizeof (struct partial_symtab
));
829 (char *) obstack_alloc (psymbol_obstack
,
830 strlen (filename
) + 1);
831 strcpy (result
->filename
, filename
);
833 result
->textlow
= textlow
;
834 result
->read_symtab_private
= (char *) obstack_alloc (psymbol_obstack
,
835 sizeof (struct symloc
));
837 LDSYMOFF(result
) = ldsymoff
;
841 result
->read_symtab
= dbx_psymtab_to_symtab
;
843 result
->globals_offset
= global_syms
- global_psymbols
.list
;
844 result
->statics_offset
= static_syms
- static_psymbols
.list
;
846 result
->n_global_syms
= 0;
847 result
->n_static_syms
= 0;
849 /* Chain it to the list owned by the current object file. */
850 result
->objfile
= objfile
;
851 result
->objfile_chain
= objfile
->psymtabs
;
852 objfile
->psymtabs
= result
;
858 compare_psymbols (s1
, s2
)
859 register struct partial_symbol
*s1
, *s2
;
862 *st1
= SYMBOL_NAME (s1
),
863 *st2
= SYMBOL_NAME (s2
);
866 return st1
[0] - st2
[0];
868 return st1
[1] - st2
[1];
869 return strcmp (st1
+ 2, st2
+ 2);
872 /* Close off the current usage of a partial_symbol table entry. This
873 involves setting the correct number of includes (with a realloc),
874 setting the high text mark, setting the symbol length in the
875 executable, and setting the length of the global and static lists
878 The global symbols and static symbols are then seperately sorted.
880 Then the partial symtab is put on the global list.
881 *** List variables and peculiarities of same. ***
884 end_psymtab (pst
, include_list
, num_includes
, capping_symbol_offset
,
885 capping_text
, dependency_list
, number_dependencies
)
886 struct partial_symtab
*pst
;
889 int capping_symbol_offset
;
890 CORE_ADDR capping_text
;
891 struct partial_symtab
**dependency_list
;
892 int number_dependencies
;
893 /* struct partial_symbol *capping_global, *capping_static;*/
897 if (capping_symbol_offset
!= -1)
898 LDSYMLEN(pst
) = capping_symbol_offset
- LDSYMOFF(pst
);
899 pst
->texthigh
= capping_text
;
902 global_psymbols
.next
- (global_psymbols
.list
+ pst
->globals_offset
);
904 static_psymbols
.next
- (static_psymbols
.list
+ pst
->statics_offset
);
906 pst
->number_of_dependencies
= number_dependencies
;
907 if (number_dependencies
)
909 pst
->dependencies
= (struct partial_symtab
**)
910 obstack_alloc (psymbol_obstack
,
911 number_dependencies
* sizeof (struct partial_symtab
*));
912 memcpy (pst
->dependencies
, dependency_list
,
913 number_dependencies
* sizeof (struct partial_symtab
*));
916 pst
->dependencies
= 0;
918 for (i
= 0; i
< num_includes
; i
++)
920 struct partial_symtab
*subpst
=
921 (struct partial_symtab
*)
922 obstack_alloc (psymbol_obstack
,
923 sizeof (struct partial_symtab
));
926 (char *) obstack_alloc (psymbol_obstack
,
927 strlen (include_list
[i
]) + 1);
928 strcpy (subpst
->filename
, include_list
[i
]);
930 /* Chain it to the list that this object file owns. */
931 subpst
->objfile
= pst
->objfile
;
932 subpst
->objfile_chain
= pst
->objfile
->psymtabs
;
933 pst
->objfile
->psymtabs
= subpst
;
935 subpst
->addr
= pst
->addr
;
936 subpst
->read_symtab_private
= (char *) obstack_alloc (psymbol_obstack
,
937 sizeof (struct symloc
));
941 subpst
->texthigh
= 0;
943 /* We could save slight bits of space by only making one of these,
944 shared by the entire set of include files. FIXME-someday. */
945 subpst
->dependencies
= (struct partial_symtab
**)
946 obstack_alloc (psymbol_obstack
,
947 sizeof (struct partial_symtab
*));
948 subpst
->dependencies
[0] = pst
;
949 subpst
->number_of_dependencies
= 1;
951 subpst
->globals_offset
=
952 subpst
->n_global_syms
=
953 subpst
->statics_offset
=
954 subpst
->n_static_syms
= 0;
958 subpst
->read_symtab
= dbx_psymtab_to_symtab
;
960 subpst
->next
= partial_symtab_list
;
961 partial_symtab_list
= subpst
;
964 /* Sort the global list; don't sort the static list */
965 qsort (global_psymbols
.list
+ pst
->globals_offset
, pst
->n_global_syms
,
966 sizeof (struct partial_symbol
), compare_psymbols
);
968 /* If there is already a psymtab or symtab for a file of this name, remove it.
969 (If there is a symtab, more drastic things also happen.)
970 This happens in VxWorks. */
971 free_named_symtabs (pst
->filename
);
973 if (num_includes
== 0
974 && number_dependencies
== 0
975 && pst
->n_global_syms
== 0
976 && pst
->n_static_syms
== 0) {
977 /* Throw away this psymtab, it's empty. We can't deallocate it, since
978 it is on the obstack, but we can forget to chain it on the list. */
981 /* Put the psymtab on the psymtab list */
982 pst
->next
= partial_symtab_list
;
983 partial_symtab_list
= pst
;
988 psymtab_to_symtab_1 (pst
, stringtab
, stringtab_size
, sym_offset
)
989 struct partial_symtab
*pst
;
994 struct cleanup
*old_chain
;
1002 fprintf (stderr
, "Psymtab for %s already read in. Shouldn't happen.\n",
1007 /* Read in all partial symtabs on which this one is dependent */
1008 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
1009 if (!pst
->dependencies
[i
]->readin
)
1011 /* Inform about additional files that need to be read in. */
1014 fputs_filtered (" ", stdout
);
1016 fputs_filtered ("and ", stdout
);
1018 printf_filtered ("%s...", pst
->dependencies
[i
]->filename
);
1019 wrap_here (""); /* Flush output */
1022 psymtab_to_symtab_1 (pst
->dependencies
[i
],
1023 stringtab
, stringtab_size
, sym_offset
);
1026 if (LDSYMLEN(pst
)) /* Otherwise it's a dummy */
1028 /* Init stuff necessary for reading in symbols */
1030 old_chain
= make_cleanup (really_free_pendings
, 0);
1032 /* Read in this files symbols */
1033 bfd_seek (pst
->objfile
->obfd
, sym_offset
, L_SET
);
1035 read_ofile_symtab (pst
->objfile
, stringtab
, stringtab_size
,
1037 LDSYMLEN(pst
), pst
->textlow
,
1038 pst
->texthigh
- pst
->textlow
, pst
->addr
);
1039 sort_symtab_syms (pst
->symtab
);
1041 do_cleanups (old_chain
);
1048 * Read in all of the symbols for a given psymtab for real.
1049 * Be verbose about it if the user wants that.
1052 dbx_psymtab_to_symtab (pst
)
1053 struct partial_symtab
*pst
;
1065 fprintf (stderr
, "Psymtab for %s already read in. Shouldn't happen.\n",
1070 if (LDSYMLEN(pst
) || pst
->number_of_dependencies
)
1072 /* Print the message now, before reading the string table,
1073 to avoid disconcerting pauses. */
1076 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
1080 sym_bfd
= pst
->objfile
->obfd
;
1082 /* We keep the string table for the main symfile resident in memory, but
1083 not the string table for any other symbol files. */
1084 if (symfile_objfile
!= pst
->objfile
)
1086 /* Read in the string table */
1088 /* FIXME, this uses internal BFD variables. See above in
1089 dbx_symbol_file_open where the macro is defined! */
1090 bfd_seek (sym_bfd
, STRING_TABLE_OFFSET
, L_SET
);
1092 val
= bfd_read (&st_temp
, sizeof st_temp
, 1, sym_bfd
);
1094 perror_with_name (pst
->objfile
->name
);
1095 stsize
= bfd_h_get_32 (sym_bfd
, (unsigned char *)&st_temp
);
1097 /* BFD doesn't provide a way to know the total file size, sigh */
1098 struct stat statbuf
;
1099 if (fstat (desc
, &statbuf
) < 0)
1100 perror_with_name (pst
->objfile
->name
);
1102 if (stsize
>= 0 && stsize
< statbuf
.st_size
)
1107 #ifdef BROKEN_LARGE_ALLOCA
1108 stringtab
= (char *) xmalloc (stsize
);
1109 make_cleanup (free
, stringtab
);
1111 stringtab
= (char *) alloca (stsize
);
1116 if (stringtab
== NULL
&& stsize
!= 0)
1117 error ("ridiculous string table size: %d bytes", stsize
);
1119 /* FIXME, this uses internal BFD variables. See above in
1120 dbx_symbol_file_open where the macro is defined! */
1121 val
= bfd_seek (sym_bfd
, STRING_TABLE_OFFSET
, L_SET
);
1123 perror_with_name (pst
->objfile
->name
);
1124 val
= bfd_read (stringtab
, stsize
, 1, sym_bfd
);
1126 perror_with_name (pst
->objfile
->name
);
1130 stringtab
= symfile_string_table
;
1131 stsize
= symfile_string_table_size
;
1134 /* FIXME POKING INSIDE BFD DATA STRUCTURES */
1135 symbol_size
= obj_symbol_entry_size (sym_bfd
);
1137 next_symbol_text_func
= dbx_next_symbol_text
;
1139 /* FIXME, this uses internal BFD variables. See above in
1140 dbx_symbol_file_open where the macro is defined! */
1141 psymtab_to_symtab_1 (pst
, stringtab
, stsize
,
1142 SYMBOL_TABLE_OFFSET
);
1144 /* Match with global symbols. This only needs to be done once,
1145 after all of the symtabs and dependencies have been read in. */
1146 scan_file_globals ();
1148 /* Finish up the debug error message. */
1150 printf_filtered ("done.\n");
1155 * Read in a defined section of a specific object file's symbols.
1157 * DESC is the file descriptor for the file, positioned at the
1158 * beginning of the symtab
1159 * STRINGTAB is a pointer to the files string
1160 * table, already read in
1161 * SYM_OFFSET is the offset within the file of
1162 * the beginning of the symbols we want to read, NUM_SUMBOLS is the
1163 * number of symbols to read
1164 * TEXT_OFFSET is the beginning of the text segment we are reading symbols for
1165 * TEXT_SIZE is the size of the text segment read in.
1166 * OFFSET is a relocation offset which gets added to each symbol
1169 static struct symtab
*
1170 read_ofile_symtab (objfile
, stringtab
, stringtab_size
, sym_offset
,
1171 sym_size
, text_offset
, text_size
, offset
)
1172 struct objfile
*objfile
;
1173 register char *stringtab
;
1174 unsigned int stringtab_size
;
1177 CORE_ADDR text_offset
;
1181 register char *namestring
;
1182 register struct internal_nlist
*bufp
;
1184 unsigned max_symnum
;
1189 stringtab_global
= stringtab
;
1190 last_source_file
= 0;
1192 abfd
= objfile
->obfd
;
1193 symfile_bfd
= objfile
->obfd
; /* Implicit param to next_text_symbol */
1194 our_objfile
= objfile
; /* For end_symtab calls in process_one_symbol */
1195 symbuf_end
= symbuf_idx
= 0;
1197 /* It is necessary to actually read one symbol *before* the start
1198 of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
1199 occurs before the N_SO symbol.
1201 Detecting this in read_dbx_symtab
1202 would slow down initial readin, so we look for it here instead. */
1203 if (sym_offset
>= (int)symbol_size
)
1205 bfd_seek (symfile_bfd
, sym_offset
- symbol_size
, L_INCR
);
1207 bufp
= &symbuf
[symbuf_idx
++];
1208 SWAP_SYMBOL (bufp
, abfd
);
1212 processing_gcc_compilation
=
1213 (bufp
->n_type
== N_TEXT
1214 && !strcmp (namestring
, GCC_COMPILED_FLAG_SYMBOL
));
1215 /* FIXME!!! Check for gcc2_compiled... */
1219 /* The N_SO starting this symtab is the first symbol, so we
1220 better not check the symbol before it. I'm not this can
1221 happen, but it doesn't hurt to check for it. */
1222 bfd_seek (symfile_bfd
, sym_offset
, L_INCR
);
1223 processing_gcc_compilation
= 0;
1226 if (symbuf_idx
== symbuf_end
)
1228 bufp
= &symbuf
[symbuf_idx
];
1229 if (bufp
->n_type
!= (unsigned char)N_SO
)
1230 error("First symbol in segment of executable not a source symbol");
1232 max_symnum
= sym_size
/ symbol_size
;
1235 symnum
< max_symnum
;
1238 QUIT
; /* Allow this to be interruptable */
1239 if (symbuf_idx
== symbuf_end
)
1241 bufp
= &symbuf
[symbuf_idx
++];
1242 SWAP_SYMBOL (bufp
, abfd
);
1244 type
= bufp
->n_type
;
1245 if (type
== (unsigned char)N_CATCH
)
1247 /* N_CATCH is not fixed up by the linker, and unfortunately,
1248 there's no other place to put it in the .stab map. */
1249 bufp
->n_value
+= text_offset
+ offset
;
1252 type
&= ~N_EXT
; /* Ignore external-bit */
1253 if (type
== N_TEXT
|| type
== N_DATA
|| type
== N_BSS
)
1254 bufp
->n_value
+= offset
;
1255 type
= bufp
->n_type
;
1260 if (type
& N_STAB
) {
1261 process_one_symbol (type
, bufp
->n_desc
, bufp
->n_value
, namestring
);
1262 /* our_objfile is an implicit parameter. */
1265 /* We skip checking for a new .o or -l file; that should never
1266 happen in this routine. */
1267 else if (type
== N_TEXT
1268 && !strcmp (namestring
, GCC_COMPILED_FLAG_SYMBOL
))
1269 /* I don't think this code will ever be executed, because
1270 the GCC_COMPILED_FLAG_SYMBOL usually is right before
1271 the N_SO symbol which starts this source file.
1272 However, there is no reason not to accept
1273 the GCC_COMPILED_FLAG_SYMBOL anywhere. */
1274 processing_gcc_compilation
= 1;
1275 else if (type
& N_EXT
|| type
== (unsigned char)N_TEXT
1276 || type
== (unsigned char)N_NBTEXT
1278 /* Global symbol: see if we came across a dbx defintion for
1279 a corresponding symbol. If so, store the value. Remove
1280 syms from the chain when their values are stored, but
1281 search the whole chain, as there may be several syms from
1282 different files with the same name. */
1283 /* This is probably not true. Since the files will be read
1284 in one at a time, each reference to a global symbol will
1285 be satisfied in each file as it appears. So we skip this
1291 return end_symtab (text_offset
+ text_size
, 0, 0, objfile
);
1298 register char *p
= name
;
1299 register int total
= p
[0];
1312 /* Ensure result is positive. */
1313 if (total
< 0) total
+= (1000 << 6);
1314 return total
% HASHSIZE
;
1319 process_one_symbol (type
, desc
, valu
, name
)
1324 #ifndef SUN_FIXED_LBRAC_BUG
1325 /* This records the last pc address we've seen. We depend on their being
1326 an SLINE or FUN or SO before the first LBRAC, since the variable does
1327 not get reset in between reads of different symbol files. */
1328 static CORE_ADDR last_pc_address
;
1330 register struct context_stack
*new;
1333 /* Something is wrong if we see real data before
1334 seeing a source file name. */
1336 if (last_source_file
== 0 && type
!= (unsigned char)N_SO
)
1338 /* Currently this ignores N_ENTRY on Gould machines, N_NSYM on machines
1339 where that code is defined. */
1340 if (IGNORE_SYMBOL (type
))
1343 /* FIXME, this should not be an error, since it precludes extending
1344 the symbol table information in this way... */
1345 error ("Invalid symbol data: does not start by identifying a source file.");
1352 /* Either of these types of symbols indicates the start of
1353 a new function. We must process its "name" normally for dbx,
1354 but also record the start of a new lexical context, and possibly
1355 also the end of the lexical context for the previous function. */
1356 /* This is not always true. This type of symbol may indicate a
1357 text segment variable. */
1359 #ifndef SUN_FIXED_LBRAC_BUG
1360 last_pc_address
= valu
; /* Save for SunOS bug circumcision */
1363 colon_pos
= strchr (name
, ':');
1365 || (*colon_pos
!= 'f' && *colon_pos
!= 'F'))
1367 define_symbol (valu
, name
, desc
, type
);
1371 within_function
= 1;
1372 if (context_stack_depth
> 0)
1374 new = pop_context ();
1375 /* Make a block for the local symbols within. */
1376 finish_block (new->name
, &local_symbols
, new->old_blocks
,
1377 new->start_addr
, valu
);
1379 /* Stack must be empty now. */
1380 if (context_stack_depth
!= 0)
1381 complain (lbrac_unmatched_complaint
, symnum
);
1383 new = push_context (0, valu
);
1384 new->name
= define_symbol (valu
, name
, desc
, type
);
1388 /* Record the address at which this catch takes place. */
1389 define_symbol (valu
, name
, desc
, type
);
1393 /* Don't know what to do with these yet. */
1394 error ("action uncertain for eh extensions");
1398 /* This "symbol" just indicates the start of an inner lexical
1399 context within a function. */
1401 #if !defined (BLOCK_ADDRESS_ABSOLUTE)
1402 /* On most machines, the block addresses are relative to the
1403 N_SO, the linker did not relocate them (sigh). */
1404 valu
+= last_source_start_addr
;
1407 #ifndef SUN_FIXED_LBRAC_BUG
1408 if (valu
< last_pc_address
) {
1409 /* Patch current LBRAC pc value to match last handy pc value */
1410 complain (&lbrac_complaint
, 0);
1411 valu
= last_pc_address
;
1414 new = push_context (desc
, valu
);
1418 /* This "symbol" just indicates the end of an inner lexical
1419 context that was started with N_LBRAC. */
1421 #if !defined (BLOCK_ADDRESS_ABSOLUTE)
1422 /* On most machines, the block addresses are relative to the
1423 N_SO, the linker did not relocate them (sigh). */
1424 valu
+= last_source_start_addr
;
1427 new = pop_context();
1428 if (desc
!= new->depth
)
1429 complain (lbrac_mismatch_complaint
, symnum
);
1431 /* Some compilers put the variable decls inside of an
1432 LBRAC/RBRAC block. This macro should be nonzero if this
1433 is true. DESC is N_DESC from the N_RBRAC symbol.
1434 GCC_P is true if we've detected the GCC_COMPILED_SYMBOL. */
1435 #if !defined (VARIABLES_INSIDE_BLOCK)
1436 #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0
1439 /* Can only use new->locals as local symbols here if we're in
1440 gcc or on a machine that puts them before the lbrack. */
1441 if (!VARIABLES_INSIDE_BLOCK(desc
, processing_gcc_compilation
))
1442 local_symbols
= new->locals
;
1444 /* If this is not the outermost LBRAC...RBRAC pair in the
1445 function, its local symbols preceded it, and are the ones
1446 just recovered from the context stack. Defined the block for them.
1448 If this is the outermost LBRAC...RBRAC pair, there is no
1449 need to do anything; leave the symbols that preceded it
1450 to be attached to the function's own block. However, if
1451 it is so, we need to indicate that we just moved outside
1454 && (context_stack_depth
1455 > !VARIABLES_INSIDE_BLOCK(desc
, processing_gcc_compilation
)))
1457 /* FIXME Muzzle a compiler bug that makes end < start. */
1458 if (new->start_addr
> valu
)
1460 complain(&lbrac_rbrac_complaint
, 0);
1461 new->start_addr
= valu
;
1463 /* Make a block for the local symbols within. */
1464 finish_block (0, &local_symbols
, new->old_blocks
,
1465 new->start_addr
, valu
);
1469 within_function
= 0;
1471 if (VARIABLES_INSIDE_BLOCK(desc
, processing_gcc_compilation
))
1472 /* Now pop locals of block just finished. */
1473 local_symbols
= new->locals
;
1478 /* This kind of symbol indicates the start of an object file. */
1482 /* This type of symbol indicates the start of data
1483 for one source file.
1484 Finish the symbol table of the previous source file
1485 (if any) and start accumulating a new symbol table. */
1486 #ifndef SUN_FIXED_LBRAC_BUG
1487 last_pc_address
= valu
; /* Save for SunOS bug circumcision */
1490 #ifdef PCC_SOL_BROKEN
1491 /* pcc bug, occasionally puts out SO for SOL. */
1492 if (context_stack_depth
> 0)
1494 start_subfile (name
, NULL
);
1498 if (last_source_file
)
1500 /* Check if previous symbol was also an N_SO (with some
1501 sanity checks). If so, that one was actually the directory
1502 name, and the current one is the real file name.
1504 if (previous_stab_code
== N_SO
1505 && current_subfile
&& current_subfile
->dirname
== NULL
1506 && current_subfile
->name
!= NULL
1507 && current_subfile
->name
[strlen(current_subfile
->name
)-1] == '/')
1509 current_subfile
->dirname
= current_subfile
->name
;
1510 current_subfile
->name
= obsavestring (name
, strlen (name
));
1513 (void)end_symtab (valu
, 0, 0);
1515 start_symtab (name
, NULL
, valu
);
1519 /* This type of symbol indicates the start of data for
1520 a sub-source-file, one whose contents were copied or
1521 included in the compilation of the main source file
1522 (whose name was given in the N_SO symbol.) */
1523 start_subfile (name
, NULL
);
1528 add_new_header_file (name
, valu
);
1529 start_subfile (name
, NULL
);
1533 start_subfile (pop_subfile (), NULL
);
1537 add_old_header_file (name
, valu
);
1541 /* This type of "symbol" really just records
1542 one line-number -- core-address correspondence.
1543 Enter it in the line list for this symbol table. */
1544 #ifndef SUN_FIXED_LBRAC_BUG
1545 last_pc_address
= valu
; /* Save for SunOS bug circumcision */
1547 record_line (current_subfile
, desc
, valu
);
1552 error ("Invalid symbol data: common within common at symtab pos %d",
1554 common_block
= local_symbols
;
1555 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
1559 /* Symbols declared since the BCOMM are to have the common block
1560 start address added in when we know it. common_block points to
1561 the first symbol after the BCOMM in the local_symbols list;
1562 copy the list and hang it off the symbol for the common block name
1566 struct symbol
*sym
=
1567 (struct symbol
*) xmalloc (sizeof (struct symbol
));
1568 bzero (sym
, sizeof *sym
);
1569 SYMBOL_NAME (sym
) = savestring (name
, strlen (name
));
1570 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
1571 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long)
1572 copy_pending (local_symbols
, common_block_i
, common_block
));
1573 i
= hashname (SYMBOL_NAME (sym
));
1574 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
1575 global_sym_chain
[i
] = sym
;
1582 case N_DEFD
: /* GNU Modula-2 symbol */
1587 define_symbol (valu
, name
, desc
, type
);
1590 previous_stab_code
= type
;
1593 /* Copy a pending list, used to record the contents of a common
1594 block for later fixup. */
1595 static struct pending
*
1596 copy_pending (beg
, begi
, end
)
1597 struct pending
*beg
, *end
;
1600 struct pending
*new = 0;
1601 struct pending
*next
;
1603 for (next
= beg
; next
!= 0 && (next
!= end
|| begi
< end
->nsyms
);
1604 next
= next
->next
, begi
= 0)
1607 for (j
= begi
; j
< next
->nsyms
; j
++)
1608 add_symbol_to_list (next
->symbol
[j
], &new);
1613 /* Register our willingness to decode symbols for SunOS and a.out and
1614 b.out files handled by BFD... */
1615 static struct sym_fns sunos_sym_fns
= {"sunOs", 6,
1616 dbx_new_init
, dbx_symfile_init
, dbx_symfile_read
};
1618 static struct sym_fns aout_sym_fns
= {"a.out", 5,
1619 dbx_new_init
, dbx_symfile_init
, dbx_symfile_read
};
1621 static struct sym_fns bout_sym_fns
= {"b.out", 5,
1622 dbx_new_init
, dbx_symfile_init
, dbx_symfile_read
};
1625 _initialize_dbxread ()
1627 add_symtab_fns(&sunos_sym_fns
);
1628 add_symtab_fns(&aout_sym_fns
);
1629 add_symtab_fns(&bout_sym_fns
);