1 /* Read os9/os9k symbol tables and convert to internal format, for GDB.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 96, 1998
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* This module provides three functions: os9k_symfile_init,
22 which initializes to read a symbol file; os9k_new_init, which
23 discards existing cached information when all symbols are being
24 discarded; and os9k_symfile_read, which reads a symbol table
27 os9k_symfile_read only does the minimum work necessary for letting the
28 user "name" things symbolically; it does not read the entire symtab.
29 Instead, it reads the external and static symbols and puts them in partial
30 symbol tables. When more extensive information is requested of a
31 file, the corresponding partial symbol table is mutated into a full
32 fledged symbol table by going back and reading the symbols
33 for real. os9k_psymtab_to_symtab() is the function that does this */
36 #include "gdb_string.h"
39 #if defined(USG) || defined(__CYGNUSCLIB__)
40 #include <sys/types.h>
48 #include "breakpoint.h"
51 #include "gdbcore.h" /* for bfd stuff */
52 #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
56 #include "gdb-stabs.h"
58 #include "language.h" /* Needed inside partial-stab.h */
59 #include "complaints.h"
61 #include "stabsread.h"
63 extern void _initialize_os9kread
PARAMS ((void));
65 /* Each partial symbol table entry contains a pointer to private data for the
66 read_symtab() function to use when expanding a partial symbol table entry
67 to a full symbol table entry.
69 For dbxread this structure contains the offset within the file symbol table
70 of first local symbol for this file, and count of the section
71 of the symbol table devoted to this file's symbols (actually, the section
72 bracketed may contain more than just this file's symbols). It also contains
73 further information needed to locate the symbols if they are in an ELF file.
75 If ldsymcnt is 0, the only reason for this thing's existence is the
76 dependency list. Nothing else will happen when it is read in. */
78 #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
79 #define LDSYMCNT(p) (((struct symloc *)((p)->read_symtab_private))->ldsymnum)
86 /* Remember what we deduced to be the source language of this psymtab. */
87 static enum language psymtab_language
= language_unknown
;
89 /* keep partial symbol table file nested depth */
90 static int psymfile_depth
= 0;
92 /* keep symbol table file nested depth */
93 static int symfile_depth
= 0;
95 /* Nonzero means give verbose info on gdb action. From main.c. */
96 extern int info_verbose
;
98 extern int previous_stab_code
;
100 /* Name of last function encountered. Used in Solaris to approximate
101 object file boundaries. */
102 static char *last_function_name
;
104 /* Complaints about the symbols we have encountered. */
105 extern struct complaint lbrac_complaint
;
107 extern struct complaint unknown_symtype_complaint
;
109 extern struct complaint unknown_symchar_complaint
;
111 extern struct complaint lbrac_rbrac_complaint
;
113 extern struct complaint repeated_header_complaint
;
115 extern struct complaint repeated_header_name_complaint
;
118 static struct complaint lbrac_unmatched_complaint
=
119 {"unmatched Increment Block Entry before symtab pos %d", 0, 0};
121 static struct complaint lbrac_mismatch_complaint
=
122 {"IBE/IDE symbol mismatch at symtab pos %d", 0, 0};
125 /* Local function prototypes */
128 read_minimal_symbols
PARAMS ((struct objfile
*, struct section_offsets
*));
131 os9k_read_ofile_symtab
PARAMS ((struct partial_symtab
*));
134 os9k_psymtab_to_symtab
PARAMS ((struct partial_symtab
*));
137 os9k_psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*));
140 read_os9k_psymtab
PARAMS ((struct section_offsets
*, struct objfile
*,
144 fill_sym
PARAMS ((FILE *, bfd
*));
147 os9k_symfile_init
PARAMS ((struct objfile
*));
150 os9k_new_init
PARAMS ((struct objfile
*));
153 os9k_symfile_read
PARAMS ((struct objfile
*, struct section_offsets
*, int));
156 os9k_symfile_finish
PARAMS ((struct objfile
*));
159 os9k_process_one_symbol
PARAMS ((int, int, CORE_ADDR
, char *,
160 struct section_offsets
*, struct objfile
*));
162 static struct partial_symtab
*
163 os9k_start_psymtab
PARAMS ((struct objfile
*, struct section_offsets
*, char *,
164 CORE_ADDR
, int, int, struct partial_symbol
**,
165 struct partial_symbol
**));
167 static struct partial_symtab
*
168 os9k_end_psymtab
PARAMS ((struct partial_symtab
*, char **, int, int, CORE_ADDR
,
169 struct partial_symtab
**, int));
172 record_minimal_symbol
PARAMS ((char *, CORE_ADDR
, int, struct objfile
*,
173 struct section_offsets
*));
175 #define HANDLE_RBRAC(val) \
176 if ((val) > pst->texthigh) pst->texthigh = (val);
178 #define SWAP_STBHDR(hdrp, abfd) \
180 (hdrp)->fmtno = bfd_get_16(abfd, (unsigned char *)&(hdrp)->fmtno); \
181 (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \
182 (hdrp)->offset = bfd_get_32(abfd, (unsigned char *)&(hdrp)->offset); \
183 (hdrp)->nsym = bfd_get_32(abfd, (unsigned char *)&(hdrp)->nsym); \
185 #define SWAP_STBSYM(symp, abfd) \
187 (symp)->value = bfd_get_32(abfd, (unsigned char *)&(symp)->value); \
188 (symp)->type = bfd_get_16(abfd, (unsigned char *)&(symp)->type); \
189 (symp)->stroff = bfd_get_32(abfd, (unsigned char *)&(symp)->stroff); \
199 record_minimal_symbol (name
, address
, type
, objfile
, section_offsets
)
203 struct objfile
*objfile
;
204 struct section_offsets
*section_offsets
;
206 enum minimal_symbol_type ms_type
;
212 address
+= ANOFFSET(section_offsets
, SECT_OFF_TEXT
);
230 ms_type
= mst_unknown
; break;
233 prim_record_minimal_symbol (name
, address
, ms_type
, objfile
);
236 /* read and process .stb file and store in minimal symbol table */
237 typedef char mhhdr
[80];
252 #define STBSYMSIZE 10
255 read_minimal_symbols(objfile
, section_offsets
)
256 struct objfile
*objfile
;
257 struct section_offsets
*section_offsets
;
262 struct stbsymbol sym
;
264 char buf
[64], buf1
[128];
267 if (fp
== NULL
) return;
268 abfd
= objfile
->obfd
;
269 fread(&hdr
.comhdr
[0], sizeof(mhhdr
), 1, fp
);
278 if (i
%2) ch
=getc(fp
);
281 fread(&hdr
.fmtno
, sizeof(hdr
.fmtno
), 1, fp
);
282 fread(&hdr
.crc
, sizeof(hdr
.crc
), 1, fp
);
283 fread(&hdr
.offset
, sizeof(hdr
.offset
), 1, fp
);
284 fread(&hdr
.nsym
, sizeof(hdr
.nsym
), 1, fp
);
285 SWAP_STBHDR(&hdr
, abfd
);
288 init_minimal_symbol_collection();
290 for (i
= hdr
.nsym
; i
> 0; i
--) {
291 fseek(fp
, (long)off
, 0);
292 fread(&sym
.value
, sizeof(sym
.value
), 1, fp
);
293 fread(&sym
.type
, sizeof(sym
.type
), 1, fp
);
294 fread(&sym
.stroff
, sizeof(sym
.stroff
), 1, fp
);
295 SWAP_STBSYM (&sym
, abfd
);
296 fseek(fp
, (long)sym
.stroff
, 0);
305 record_minimal_symbol(buf1
, sym
.value
, sym
.type
&7, objfile
, section_offsets
);
308 install_minimal_symbols (objfile
);
312 /* Scan and build partial symbols for a symbol file.
313 We have been initialized by a call to os9k_symfile_init, which
314 put all the relevant info into a "struct os9k_symfile_info",
315 hung off the objfile structure.
317 SECTION_OFFSETS contains offsets relative to which the symbols in the
318 various sections are (depending where the sections were actually loaded).
319 MAINLINE is true if we are reading the main symbol
320 table (as opposed to a shared lib or dynamically loaded file). */
323 os9k_symfile_read (objfile
, section_offsets
, mainline
)
324 struct objfile
*objfile
;
325 struct section_offsets
*section_offsets
;
326 int mainline
; /* FIXME comments above */
329 struct cleanup
*back_to
;
331 sym_bfd
= objfile
->obfd
;
332 /* If we are reinitializing, or if we have never loaded syms yet, init */
333 if (mainline
|| objfile
->global_psymbols
.size
== 0 ||
334 objfile
->static_psymbols
.size
== 0)
335 init_psymbol_list (objfile
, DBX_SYMCOUNT (objfile
));
337 free_pending_blocks ();
338 back_to
= make_cleanup ((make_cleanup_func
) really_free_pendings
, 0);
340 make_cleanup ((make_cleanup_func
) discard_minimal_symbols
, 0);
341 read_minimal_symbols (objfile
, section_offsets
);
343 /* Now that the symbol table data of the executable file are all in core,
344 process them and define symbols accordingly. */
345 read_os9k_psymtab (section_offsets
, objfile
,
346 DBX_TEXT_ADDR (objfile
),
347 DBX_TEXT_SIZE (objfile
));
349 do_cleanups (back_to
);
352 /* Initialize anything that needs initializing when a completely new
353 symbol file is specified (not just adding some symbols from another
354 file, e.g. a shared library). */
357 os9k_new_init (ignore
)
358 struct objfile
*ignore
;
360 stabsread_new_init ();
361 buildsym_new_init ();
364 init_header_files ();
368 /* os9k_symfile_init ()
369 It is passed a struct objfile which contains, among other things,
370 the BFD for the file whose symbols are being read, and a slot for a pointer
371 to "private data" which we fill with goodies.
373 Since BFD doesn't know how to read debug symbols in a format-independent
374 way (and may never do so...), we have to do it ourselves. We will never
375 be called unless this is an a.out (or very similar) file.
376 FIXME, there should be a cleaner peephole into the BFD environment here. */
379 os9k_symfile_init (objfile
)
380 struct objfile
*objfile
;
382 bfd
*sym_bfd
= objfile
->obfd
;
383 char *name
= bfd_get_filename (sym_bfd
);
384 char dbgname
[512], stbname
[512];
389 strcpy(dbgname
, name
);
390 strcat(dbgname
, ".dbg");
391 strcpy(stbname
, name
);
392 strcat(stbname
, ".stb");
394 if ((symfile
= fopen(dbgname
, "r")) == NULL
) {
395 warning("Symbol file %s not found", dbgname
);
397 objfile
->auxf2
= symfile
;
399 if ((minfile
= fopen(stbname
, "r")) == NULL
) {
400 warning("Symbol file %s not found", stbname
);
402 objfile
->auxf1
= minfile
;
404 /* Allocate struct to keep track of the symfile */
405 objfile
->sym_stab_info
= (struct dbx_symfile_info
*)
406 xmmalloc (objfile
-> md
, sizeof (struct dbx_symfile_info
));
407 DBX_SYMFILE_INFO (objfile
)->stab_section_info
= NULL
;
409 text_sect
= bfd_get_section_by_name (sym_bfd
, ".text");
411 error ("Can't find .text section in file");
412 DBX_TEXT_ADDR (objfile
) = bfd_section_vma (sym_bfd
, text_sect
);
413 DBX_TEXT_SIZE (objfile
) = bfd_section_size (sym_bfd
, text_sect
);
415 DBX_SYMBOL_SIZE (objfile
) = 0; /* variable size symbol */
416 DBX_SYMCOUNT (objfile
) = 0; /* used to be bfd_get_symcount(sym_bfd) */
417 DBX_SYMTAB_OFFSET (objfile
) = 0; /* used to be SYMBOL_TABLE_OFFSET */
420 /* Perform any local cleanups required when we are done with a particular
421 objfile. I.E, we are in the process of discarding all symbol information
422 for an objfile, freeing up all memory held for it, and unlinking the
423 objfile struct from the global list of known objfiles. */
426 os9k_symfile_finish (objfile
)
427 struct objfile
*objfile
;
429 if (objfile
->sym_stab_info
!= NULL
)
431 mfree (objfile
-> md
, objfile
->sym_stab_info
);
434 free_header_files ();
446 #define SYNC (int)0xefbefeca
448 #define SWAP_DBGHDR(hdrp, abfd) \
450 (hdrp)->sync = bfd_get_32(abfd, (unsigned char *)&(hdrp)->sync); \
451 (hdrp)->rev = bfd_get_16(abfd, (unsigned char *)&(hdrp)->rev); \
452 (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \
453 (hdrp)->os = bfd_get_16(abfd, (unsigned char *)&(hdrp)->os); \
454 (hdrp)->cpu = bfd_get_16(abfd, (unsigned char *)&(hdrp)->cpu); \
457 #define N_SYM_CMPLR 0
458 #define N_SYM_SLINE 1
460 #define N_SYM_LBRAC 3
461 #define N_SYM_RBRAC 4
464 struct internal_symstruct
{
470 static struct internal_symstruct symbol
;
471 static struct internal_symstruct
*symbuf
= &symbol
;
472 static char strbuf
[4096];
473 static struct st_dbghdr dbghdr
;
474 static short cmplrid
;
476 #define VER_PRE_ULTRAC ((short)4)
477 #define VER_ULTRAC ((short)5)
480 fill_sym (dbg_file
, abfd
)
489 int nbytes
= fread(&si
, sizeof(si
), 1, dbg_file
);
493 perror_with_name ("reading .dbg file.");
496 symbuf
->n_strx
= NULL
;
497 symbuf
->n_type
= bfd_get_16 (abfd
, (unsigned char *)&si
);
498 symbuf
->n_type
= 0xf & symbuf
->n_type
;
499 switch (symbuf
->n_type
)
502 fread(&si
, sizeof(si
), 1, dbg_file
);
503 symbuf
->n_desc
= bfd_get_16(abfd
, (unsigned char *)&si
);
504 cmplrid
= symbuf
->n_desc
& 0xff;
507 fread(&li
, sizeof(li
), 1, dbg_file
);
508 symbuf
->n_value
= bfd_get_32(abfd
, (unsigned char *)&li
);
509 fread(&li
, sizeof(li
), 1, dbg_file
);
510 li
= bfd_get_32(abfd
, (unsigned char *)&li
);
511 symbuf
->n_strx
= (char *)(li
>> 12);
512 symbuf
->n_desc
= li
& 0xfff;
515 fread(&li
, sizeof(li
), 1, dbg_file
);
516 symbuf
->n_value
= bfd_get_32(abfd
, (unsigned char *)&li
);
520 strbuf
[si
++] = (char) ii
;
521 } while (ii
!= 0 || si
% 2 != 0);
522 symbuf
->n_strx
= strbuf
;
523 p
= (char *) strchr (strbuf
, ':');
525 if ((p
[1] == 'F' || p
[1] == 'f') && cmplrid
== VER_PRE_ULTRAC
)
527 fread(&si
, sizeof(si
), 1, dbg_file
);
528 nmask
= bfd_get_16(abfd
, (unsigned char *)&si
);
529 for (ii
=0; ii
<nmask
; ii
++)
530 fread(&si
, sizeof(si
), 1, dbg_file
);
534 fread(&li
, sizeof(li
), 1, dbg_file
);
535 symbuf
->n_value
= bfd_get_32(abfd
, (unsigned char *)&li
);
538 fread(&li
, sizeof(li
), 1, dbg_file
);
539 symbuf
->n_value
= bfd_get_32(abfd
, (unsigned char *)&li
);
547 /* Given pointers to an a.out symbol table in core containing dbx
548 style data, setup partial_symtab's describing each source file for
549 which debugging information is available.
550 SYMFILE_NAME is the name of the file we are reading from
551 and SECTION_OFFSETS is the set of offsets for the various sections
552 of the file (a set of zeros if the mainline program). */
555 read_os9k_psymtab (section_offsets
, objfile
, text_addr
, text_size
)
556 struct section_offsets
*section_offsets
;
557 struct objfile
*objfile
;
561 register struct internal_symstruct
*bufp
= 0; /* =0 avoids gcc -Wall glitch*/
562 register char *namestring
;
563 int past_first_source_file
= 0;
564 CORE_ADDR last_o_file_start
= 0;
566 struct cleanup
*back_to
;
571 /* End of the text segment of the executable file. */
572 static CORE_ADDR end_of_text_addr
;
574 /* Current partial symtab */
575 static struct partial_symtab
*pst
= 0;
577 /* List of current psymtab's include files */
578 char **psymtab_include_list
;
579 int includes_allocated
;
582 /* Index within current psymtab dependency list */
583 struct partial_symtab
**dependency_list
;
584 int dependencies_used
, dependencies_allocated
;
586 includes_allocated
= 30;
588 psymtab_include_list
= (char **) alloca (includes_allocated
*
591 dependencies_allocated
= 30;
592 dependencies_used
= 0;
594 (struct partial_symtab
**) alloca (dependencies_allocated
*
595 sizeof (struct partial_symtab
*));
597 last_source_file
= NULL
;
599 #ifdef END_OF_TEXT_DEFAULT
600 end_of_text_addr
= END_OF_TEXT_DEFAULT
;
602 end_of_text_addr
= text_addr
+ section_offsets
->offsets
[SECT_OFF_TEXT
]
603 + text_size
; /* Relocate */
606 abfd
= objfile
->obfd
;
610 fread(&dbghdr
.sync
, sizeof(dbghdr
.sync
), 1, fp
);
611 fread(&dbghdr
.rev
, sizeof(dbghdr
.rev
), 1, fp
);
612 fread(&dbghdr
.crc
, sizeof(dbghdr
.crc
), 1, fp
);
613 fread(&dbghdr
.os
, sizeof(dbghdr
.os
), 1, fp
);
614 fread(&dbghdr
.cpu
, sizeof(dbghdr
.cpu
), 1, fp
);
615 SWAP_DBGHDR(&dbghdr
, abfd
);
623 /* Get the symbol for this run and pull out some info */
624 QUIT
; /* allow this to be interruptable */
625 cursymoffset
= ftell(objfile
->auxf2
);
626 ret
= fill_sym(objfile
->auxf2
, abfd
);
631 /* Special case to speed up readin. */
632 if (bufp
->n_type
== (short)N_SYM_SLINE
) continue;
634 #define CUR_SYMBOL_VALUE bufp->n_value
637 switch (bufp
->n_type
)
645 CUR_SYMBOL_VALUE
+= ANOFFSET(section_offsets
, SECT_OFF_TEXT
);
646 if (psymfile_depth
== 1 && pst
)
648 os9k_end_psymtab (pst
, psymtab_include_list
, includes_used
,
649 symnum
, CUR_SYMBOL_VALUE
,
650 dependency_list
, dependencies_used
);
651 pst
= (struct partial_symtab
*) 0;
653 dependencies_used
= 0;
658 case N_SYM_SYM
: /* Typedef or automatic variable. */
659 namestring
= bufp
->n_strx
;
660 p
= (char *) strchr (namestring
, ':');
662 continue; /* Not a debugging symbol. */
664 /* Main processing section for debugging symbols which
665 the initial read through the symbol tables needs to worry
666 about. If we reach this point, the symbol which we are
667 considering is definitely one we are interested in.
668 p must also contain the (valid) index into the namestring
669 which indicates the debugging type symbol. */
676 enum language tmp_language
;
680 valu
= CUR_SYMBOL_VALUE
;
682 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
683 past_first_source_file
= 1;
685 p
= strchr(namestring
, ':');
686 if (p
) n
= p
-namestring
;
687 else n
= strlen(namestring
);
689 strncpy(str
, namestring
, n
);
692 if (psymfile_depth
== 0) {
694 pst
= os9k_start_psymtab (objfile
, section_offsets
,
698 objfile
-> global_psymbols
.next
,
699 objfile
-> static_psymbols
.next
);
700 } else { /* this is a include file */
701 tmp_language
= deduce_language_from_filename (str
);
702 if (tmp_language
!= language_unknown
703 && (tmp_language
!= language_c
704 || psymtab_language
!= language_cplus
))
705 psymtab_language
= tmp_language
;
708 if (pst && STREQ (str, pst->filename))
712 for (i = 0; i < includes_used; i++)
713 if (STREQ (str, psymtab_include_list[i]))
723 psymtab_include_list
[includes_used
++] = str
;
724 if (includes_used
>= includes_allocated
)
726 char **orig
= psymtab_include_list
;
728 psymtab_include_list
= (char **)
729 alloca ((includes_allocated
*= 2) * sizeof (char *));
730 memcpy ((PTR
)psymtab_include_list
, (PTR
)orig
,
731 includes_used
* sizeof (char *));
740 add_psymbol_to_list (namestring
, p
- namestring
,
741 VAR_NAMESPACE
, LOC_STATIC
,
742 &objfile
->static_psymbols
,
744 psymtab_language
, objfile
);
747 add_psymbol_to_list (namestring
, p
- namestring
,
748 VAR_NAMESPACE
, LOC_STATIC
,
749 &objfile
->global_psymbols
,
751 psymtab_language
, objfile
);
755 if (p
!= namestring
) /* a name is there, not just :T... */
757 add_psymbol_to_list (namestring
, p
- namestring
,
758 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
759 &objfile
->static_psymbols
,
761 psymtab_language
, objfile
);
764 /* Also a typedef with the same name. */
765 add_psymbol_to_list (namestring
, p
- namestring
,
766 VAR_NAMESPACE
, LOC_TYPEDEF
,
767 &objfile
->static_psymbols
,
768 CUR_SYMBOL_VALUE
, 0, psymtab_language
,
772 /* The semantics of C++ state that "struct foo { ... }"
773 also defines a typedef for "foo". Unfortuantely, cfront
774 never makes the typedef when translating from C++ to C.
775 We make the typedef here so that "ptype foo" works as
776 expected for cfront translated code. */
777 else if (psymtab_language
== language_cplus
)
779 /* Also a typedef with the same name. */
780 add_psymbol_to_list (namestring
, p
- namestring
,
781 VAR_NAMESPACE
, LOC_TYPEDEF
,
782 &objfile
->static_psymbols
,
783 CUR_SYMBOL_VALUE
, 0, psymtab_language
,
789 if (p
!= namestring
) /* a name is there, not just :T... */
791 add_psymbol_to_list (namestring
, p
- namestring
,
792 VAR_NAMESPACE
, LOC_TYPEDEF
,
793 &objfile
->static_psymbols
,
795 psymtab_language
, objfile
);
798 /* If this is an enumerated type, we need to
799 add all the enum constants to the partial symbol
800 table. This does not cover enums without names, e.g.
801 "enum {a, b} c;" in C, but fortunately those are
802 rare. There is no way for GDB to find those from the
803 enum type without spending too much time on it. Thus
804 to solve this problem, the compiler needs to put out the
805 enum in a nameless type. GCC2 does this. */
807 /* We are looking for something of the form
808 <name> ":" ("t" | "T") [<number> "="] "e" <size>
809 {<constant> ":" <value> ","} ";". */
811 /* Skip over the colon and the 't' or 'T'. */
813 /* This type may be given a number. Also, numbers can come
814 in pairs like (0,26). Skip over it. */
815 while ((*p
>= '0' && *p
<= '9')
816 || *p
== '(' || *p
== ',' || *p
== ')'
822 /* We have found an enumerated type. skip size */
823 while (*p
>= '0' && *p
<= '9') p
++;
824 /* According to comments in read_enum_type
825 a comma could end it instead of a semicolon.
826 I don't know where that happens.
828 while (*p
&& *p
!= ';' && *p
!= ',')
832 /* Check for and handle cretinous dbx symbol name
835 p = next_symbol_text (objfile);
838 /* Point to the character after the name
839 of the enum constant. */
840 for (q
= p
; *q
&& *q
!= ':'; q
++)
842 /* Note that the value doesn't matter for
843 enum constants in psymtabs, just in symtabs. */
844 add_psymbol_to_list (p
, q
- p
,
845 VAR_NAMESPACE
, LOC_CONST
,
846 &objfile
->static_psymbols
, 0,
847 0, psymtab_language
, objfile
);
848 /* Point past the name. */
850 /* Skip over the value. */
851 while (*p
&& *p
!= ',')
853 /* Advance past the comma. */
860 /* Constant, e.g. from "const" in Pascal. */
861 add_psymbol_to_list (namestring
, p
- namestring
,
862 VAR_NAMESPACE
, LOC_CONST
,
863 &objfile
->static_psymbols
, CUR_SYMBOL_VALUE
,
864 0, psymtab_language
, objfile
);
868 CUR_SYMBOL_VALUE
+= ANOFFSET(section_offsets
, SECT_OFF_TEXT
);
869 if (pst
&& pst
->textlow
== 0)
870 pst
->textlow
= CUR_SYMBOL_VALUE
;
872 add_psymbol_to_list (namestring
, p
- namestring
,
873 VAR_NAMESPACE
, LOC_BLOCK
,
874 &objfile
->static_psymbols
, CUR_SYMBOL_VALUE
,
875 0, psymtab_language
, objfile
);
879 CUR_SYMBOL_VALUE
+= ANOFFSET(section_offsets
, SECT_OFF_TEXT
);
880 if (pst
&& pst
->textlow
== 0)
881 pst
->textlow
= CUR_SYMBOL_VALUE
;
883 add_psymbol_to_list (namestring
, p
- namestring
,
884 VAR_NAMESPACE
, LOC_BLOCK
,
885 &objfile
->global_psymbols
, CUR_SYMBOL_VALUE
,
886 0, psymtab_language
, objfile
);
895 /* It is a C++ nested symbol. We don't need to record it
896 (I don't think); if we try to look up foo::bar::baz,
897 then symbols for the symtab containing foo should get
899 /* Someone says sun cc puts out symbols like
900 /foo/baz/maclib::/usr/local/bin/maclib,
901 which would get here with a symbol type of ':'. */
905 /* Unexpected symbol descriptor. The second and subsequent stabs
906 of a continued stab can show up here. The question is
907 whether they ever can mimic a normal stab--it would be
908 nice if not, since we certainly don't want to spend the
909 time searching to the end of every string looking for
912 complain (&unknown_symchar_complaint
, p
[1]);
917 CUR_SYMBOL_VALUE
+= ANOFFSET(section_offsets
, SECT_OFF_TEXT
);
919 HANDLE_RBRAC(CUR_SYMBOL_VALUE
);
926 /* If we haven't found it yet, ignore it. It's probably some
927 new type we don't know about yet. */
928 complain (&unknown_symtype_complaint
,
929 local_hex_string ((unsigned long) bufp
->n_type
));
934 DBX_SYMCOUNT (objfile
) = symnum
;
936 /* If there's stuff to be cleaned up, clean it up. */
937 if (DBX_SYMCOUNT (objfile
) > 0
938 /*FIXME, does this have a bug at start address 0? */
940 && objfile
-> ei
.entry_point
< bufp
->n_value
941 && objfile
-> ei
.entry_point
>= last_o_file_start
)
943 objfile
-> ei
.entry_file_lowpc
= last_o_file_start
;
944 objfile
-> ei
.entry_file_highpc
= bufp
->n_value
;
949 os9k_end_psymtab (pst
, psymtab_include_list
, includes_used
,
950 symnum
, end_of_text_addr
,
951 dependency_list
, dependencies_used
);
954 do_cleanups (back_to);
958 /* Allocate and partially fill a partial symtab. It will be
959 completely filled at the end of the symbol list.
961 SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
962 is the address relative to which its symbols are (incremental) or 0
966 static struct partial_symtab
*
967 os9k_start_psymtab (objfile
, section_offsets
,
968 filename
, textlow
, ldsymoff
,ldsymcnt
, global_syms
, static_syms
)
969 struct objfile
*objfile
;
970 struct section_offsets
*section_offsets
;
975 struct partial_symbol
**global_syms
;
976 struct partial_symbol
**static_syms
;
978 struct partial_symtab
*result
=
979 start_psymtab_common(objfile
, section_offsets
,
980 filename
, textlow
, global_syms
, static_syms
);
982 result
->read_symtab_private
= (char *)
983 obstack_alloc (&objfile
-> psymbol_obstack
, sizeof (struct symloc
));
985 LDSYMOFF(result
) = ldsymoff
;
986 LDSYMCNT(result
) = ldsymcnt
;
987 result
->read_symtab
= os9k_psymtab_to_symtab
;
989 /* Deduce the source language from the filename for this psymtab. */
990 psymtab_language
= deduce_language_from_filename (filename
);
994 /* Close off the current usage of PST.
995 Returns PST or NULL if the partial symtab was empty and thrown away.
996 FIXME: List variables and peculiarities of same. */
998 static struct partial_symtab
*
999 os9k_end_psymtab (pst
, include_list
, num_includes
, capping_symbol_cnt
,
1000 capping_text
, dependency_list
, number_dependencies
)
1001 struct partial_symtab
*pst
;
1002 char **include_list
;
1004 int capping_symbol_cnt
;
1005 CORE_ADDR capping_text
;
1006 struct partial_symtab
**dependency_list
;
1007 int number_dependencies
;
1008 /* struct partial_symbol *capping_global, *capping_static; */
1011 struct partial_symtab
*p1
;
1012 struct objfile
*objfile
= pst
-> objfile
;
1014 if (capping_symbol_cnt
!= -1)
1015 LDSYMCNT(pst
) = capping_symbol_cnt
- LDSYMCNT(pst
);
1017 /* Under Solaris, the N_SO symbols always have a value of 0,
1018 instead of the usual address of the .o file. Therefore,
1019 we have to do some tricks to fill in texthigh and textlow.
1020 The first trick is in partial-stab.h: if we see a static
1021 or global function, and the textlow for the current pst
1022 is still 0, then we use that function's address for
1023 the textlow of the pst.
1025 Now, to fill in texthigh, we remember the last function seen
1026 in the .o file (also in partial-stab.h). Also, there's a hack in
1027 bfd/elf.c and gdb/elfread.c to pass the ELF st_size field
1028 to here via the misc_info field. Therefore, we can fill in
1029 a reliable texthigh by taking the address plus size of the
1030 last function in the file.
1032 Unfortunately, that does not cover the case where the last function
1033 in the file is static. See the paragraph below for more comments
1036 Finally, if we have a valid textlow for the current file, we run
1037 down the partial_symtab_list filling in previous texthighs that
1038 are still unknown. */
1040 if (pst
->texthigh
== 0 && last_function_name
) {
1043 struct minimal_symbol
*minsym
;
1045 p
= strchr (last_function_name
, ':');
1047 p
= last_function_name
;
1048 n
= p
- last_function_name
;
1050 strncpy (p
, last_function_name
, n
);
1053 minsym
= lookup_minimal_symbol (p
, NULL
, objfile
);
1056 pst
->texthigh
= SYMBOL_VALUE_ADDRESS(minsym
)+(long)MSYMBOL_INFO(minsym
);
1058 /* This file ends with a static function, and it's
1059 difficult to imagine how hard it would be to track down
1060 the elf symbol. Luckily, most of the time no one will notice,
1061 since the next file will likely be compiled with -g, so
1062 the code below will copy the first fuction's start address
1063 back to our texthigh variable. (Also, if this file is the
1064 last one in a dynamically linked program, texthigh already
1065 has the right value.) If the next file isn't compiled
1066 with -g, then the last function in this file winds up owning
1067 all of the text space up to the next -g file, or the end (minus
1068 shared libraries). This only matters for single stepping,
1069 and even then it will still work, except that it will single
1070 step through all of the covered functions, instead of setting
1071 breakpoints around them as it usualy does. This makes it
1072 pretty slow, but at least it doesn't fail.
1074 We can fix this with a fairly big change to bfd, but we need
1075 to coordinate better with Cygnus if we want to do that. FIXME. */
1077 last_function_name
= NULL
;
1080 /* this test will be true if the last .o file is only data */
1081 if (pst
->textlow
== 0)
1082 pst
->textlow
= pst
->texthigh
;
1084 /* If we know our own starting text address, then walk through all other
1085 psymtabs for this objfile, and if any didn't know their ending text
1086 address, set it to our starting address. Take care to not set our
1087 own ending address to our starting address, nor to set addresses on
1088 `dependency' files that have both textlow and texthigh zero. */
1090 ALL_OBJFILE_PSYMTABS (objfile
, p1
) {
1091 if (p1
->texthigh
== 0 && p1
->textlow
!= 0 && p1
!= pst
) {
1092 p1
->texthigh
= pst
->textlow
;
1093 /* if this file has only data, then make textlow match texthigh */
1094 if (p1
->textlow
== 0)
1095 p1
->textlow
= p1
->texthigh
;
1100 /* End of kludge for patching Solaris textlow and texthigh. */
1102 pst
->n_global_syms
=
1103 objfile
->global_psymbols
.next
- (objfile
->global_psymbols
.list
+ pst
->globals_offset
);
1104 pst
->n_static_syms
=
1105 objfile
->static_psymbols
.next
- (objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1107 pst
->number_of_dependencies
= number_dependencies
;
1108 if (number_dependencies
)
1110 pst
->dependencies
= (struct partial_symtab
**)
1111 obstack_alloc (&objfile
->psymbol_obstack
,
1112 number_dependencies
* sizeof (struct partial_symtab
*));
1113 memcpy (pst
->dependencies
, dependency_list
,
1114 number_dependencies
* sizeof (struct partial_symtab
*));
1117 pst
->dependencies
= 0;
1119 for (i
= 0; i
< num_includes
; i
++)
1121 struct partial_symtab
*subpst
=
1122 allocate_psymtab (include_list
[i
], objfile
);
1124 subpst
->section_offsets
= pst
->section_offsets
;
1125 subpst
->read_symtab_private
=
1126 (char *) obstack_alloc (&objfile
->psymbol_obstack
,
1127 sizeof (struct symloc
));
1131 subpst
->texthigh
= 0;
1133 /* We could save slight bits of space by only making one of these,
1134 shared by the entire set of include files. FIXME-someday. */
1135 subpst
->dependencies
= (struct partial_symtab
**)
1136 obstack_alloc (&objfile
->psymbol_obstack
,
1137 sizeof (struct partial_symtab
*));
1138 subpst
->dependencies
[0] = pst
;
1139 subpst
->number_of_dependencies
= 1;
1141 subpst
->globals_offset
=
1142 subpst
->n_global_syms
=
1143 subpst
->statics_offset
=
1144 subpst
->n_static_syms
= 0;
1148 subpst
->read_symtab
= pst
->read_symtab
;
1151 sort_pst_symbols (pst
);
1153 /* If there is already a psymtab or symtab for a file of this name,
1155 (If there is a symtab, more drastic things also happen.)
1156 This happens in VxWorks. */
1157 free_named_symtabs (pst
->filename
);
1159 if (num_includes
== 0
1160 && number_dependencies
== 0
1161 && pst
->n_global_syms
== 0
1162 && pst
->n_static_syms
== 0) {
1163 /* Throw away this psymtab, it's empty. We can't deallocate it, since
1164 it is on the obstack, but we can forget to chain it on the list. */
1165 /* Indicate that psymtab was thrown away. */
1167 discard_psymtab (pst
);
1169 pst
= (struct partial_symtab
*)NULL
;
1175 os9k_psymtab_to_symtab_1 (pst
)
1176 struct partial_symtab
*pst
;
1178 struct cleanup
*old_chain
;
1186 fprintf_unfiltered (gdb_stderr
, "Psymtab for %s already read in. Shouldn't happen.\n",
1191 /* Read in all partial symtabs on which this one is dependent */
1192 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
1193 if (!pst
->dependencies
[i
]->readin
)
1195 /* Inform about additional files that need to be read in. */
1198 fputs_filtered (" ", gdb_stdout
);
1200 fputs_filtered ("and ", gdb_stdout
);
1202 printf_filtered ("%s...", pst
->dependencies
[i
]->filename
);
1203 wrap_here (""); /* Flush output */
1204 gdb_flush (gdb_stdout
);
1206 os9k_psymtab_to_symtab_1 (pst
->dependencies
[i
]);
1209 if (LDSYMCNT(pst
)) /* Otherwise it's a dummy */
1211 /* Init stuff necessary for reading in symbols */
1214 old_chain
= make_cleanup ((make_cleanup_func
) really_free_pendings
, 0);
1216 /* Read in this file's symbols */
1217 os9k_read_ofile_symtab (pst
);
1218 sort_symtab_syms (pst
->symtab
);
1219 do_cleanups (old_chain
);
1225 /* Read in all of the symbols for a given psymtab for real.
1226 Be verbose about it if the user wants that. */
1229 os9k_psymtab_to_symtab (pst
)
1230 struct partial_symtab
*pst
;
1239 fprintf_unfiltered (gdb_stderr
, "Psymtab for %s already read in. Shouldn't happen.\n",
1244 if (LDSYMCNT(pst
) || pst
->number_of_dependencies
)
1246 /* Print the message now, before reading the string table,
1247 to avoid disconcerting pauses. */
1250 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
1251 gdb_flush (gdb_stdout
);
1254 sym_bfd
= pst
->objfile
->obfd
;
1255 os9k_psymtab_to_symtab_1 (pst
);
1257 /* Match with global symbols. This only needs to be done once,
1258 after all of the symtabs and dependencies have been read in. */
1259 scan_file_globals (pst
->objfile
);
1261 /* Finish up the debug error message. */
1263 printf_filtered ("done.\n");
1267 /* Read in a defined section of a specific object file's symbols. */
1269 os9k_read_ofile_symtab (pst
)
1270 struct partial_symtab
*pst
;
1272 register struct internal_symstruct
*bufp
;
1274 unsigned max_symnum
;
1276 struct objfile
*objfile
;
1277 int sym_offset
; /* Offset to start of symbols to read */
1278 CORE_ADDR text_offset
; /* Start of text segment for symbols */
1279 int text_size
; /* Size of text segment for symbols */
1280 struct section_offsets
*section_offsets
;
1283 objfile
= pst
->objfile
;
1284 sym_offset
= LDSYMOFF(pst
);
1285 max_symnum
= LDSYMCNT(pst
);
1286 text_offset
= pst
->textlow
;
1287 text_size
= pst
->texthigh
- pst
->textlow
;
1288 section_offsets
= pst
->section_offsets
;
1290 current_objfile
= objfile
;
1291 subfile_stack
= NULL
;
1292 last_source_file
= NULL
;
1294 abfd
= objfile
->obfd
;
1295 dbg_file
= objfile
->auxf2
;
1298 /* It is necessary to actually read one symbol *before* the start
1299 of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
1300 occurs before the N_SO symbol.
1301 Detecting this in read_dbx_symtab
1302 would slow down initial readin, so we look for it here instead. */
1303 if (!processing_acc_compilation
&& sym_offset
>= (int)symbol_size
)
1305 fseek (objefile
->auxf2
, sym_offset
, SEEK_CUR
);
1306 fill_sym(objfile
->auxf2
, abfd
);
1309 processing_gcc_compilation
= 0;
1310 if (bufp
->n_type
== N_TEXT
)
1312 if (STREQ (namestring
, GCC_COMPILED_FLAG_SYMBOL
))
1313 processing_gcc_compilation
= 1;
1314 else if (STREQ (namestring
, GCC2_COMPILED_FLAG_SYMBOL
))
1315 processing_gcc_compilation
= 2;
1318 /* Try to select a C++ demangling based on the compilation unit
1321 if (processing_gcc_compilation
)
1323 if (AUTO_DEMANGLING
)
1325 set_demangling_style (GNU_DEMANGLING_STYLE_STRING
);
1331 /* The N_SO starting this symtab is the first symbol, so we
1332 better not check the symbol before it. I'm not this can
1333 happen, but it doesn't hurt to check for it. */
1334 bfd_seek (symfile_bfd
, sym_offset
, SEEK_CUR
);
1335 processing_gcc_compilation
= 0;
1339 fseek(dbg_file
, (long)sym_offset
, 0);
1341 if (bufp->n_type != (unsigned char)N_SYM_SYM)
1342 error("First symbol in segment of executable not a source symbol");
1345 for (symnum
= 0; symnum
< max_symnum
; symnum
++)
1347 QUIT
; /* Allow this to be interruptable */
1348 fill_sym(dbg_file
, abfd
);
1350 type
= bufp
->n_type
;
1352 os9k_process_one_symbol ((int)type
, (int)bufp
->n_desc
,
1353 (CORE_ADDR
)bufp
->n_value
, bufp
->n_strx
, section_offsets
, objfile
);
1355 /* We skip checking for a new .o or -l file; that should never
1356 happen in this routine. */
1358 else if (type
== N_TEXT
)
1360 /* I don't think this code will ever be executed, because
1361 the GCC_COMPILED_FLAG_SYMBOL usually is right before
1362 the N_SO symbol which starts this source file.
1363 However, there is no reason not to accept
1364 the GCC_COMPILED_FLAG_SYMBOL anywhere. */
1366 if (STREQ (namestring
, GCC_COMPILED_FLAG_SYMBOL
))
1367 processing_gcc_compilation
= 1;
1368 else if (STREQ (namestring
, GCC2_COMPILED_FLAG_SYMBOL
))
1369 processing_gcc_compilation
= 2;
1371 if (AUTO_DEMANGLING
)
1373 set_demangling_style (GNU_DEMANGLING_STYLE_STRING
);
1376 else if (type
& N_EXT
|| type
== (unsigned char)N_TEXT
1377 || type
== (unsigned char)N_NBTEXT
1379 /* Global symbol: see if we came across a dbx defintion for
1380 a corresponding symbol. If so, store the value. Remove
1381 syms from the chain when their values are stored, but
1382 search the whole chain, as there may be several syms from
1383 different files with the same name. */
1384 /* This is probably not true. Since the files will be read
1385 in one at a time, each reference to a global symbol will
1386 be satisfied in each file as it appears. So we skip this
1393 current_objfile
= NULL
;
1395 /* In a Solaris elf file, this variable, which comes from the
1396 value of the N_SO symbol, will still be 0. Luckily, text_offset,
1397 which comes from pst->textlow is correct. */
1398 if (last_source_start_addr
== 0)
1399 last_source_start_addr
= text_offset
;
1400 pst
->symtab
= end_symtab (text_offset
+ text_size
, objfile
, SECT_OFF_TEXT
);
1405 /* This handles a single symbol from the symbol-file, building symbols
1406 into a GDB symtab. It takes these arguments and an implicit argument.
1408 TYPE is the type field of the ".stab" symbol entry.
1409 DESC is the desc field of the ".stab" entry.
1410 VALU is the value field of the ".stab" entry.
1411 NAME is the symbol name, in our address space.
1412 SECTION_OFFSETS is a set of amounts by which the sections of this object
1413 file were relocated when it was loaded into memory.
1414 All symbols that refer
1415 to memory locations need to be offset by these amounts.
1416 OBJFILE is the object file from which we are reading symbols.
1417 It is used in end_symtab. */
1420 os9k_process_one_symbol (type
, desc
, valu
, name
, section_offsets
, objfile
)
1424 struct section_offsets
*section_offsets
;
1425 struct objfile
*objfile
;
1427 register struct context_stack
*new;
1428 /* The stab type used for the definition of the last function.
1429 N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */
1430 static int function_stab_type
= 0;
1433 /* Something is wrong if we see real data before
1434 seeing a source file name. */
1435 if (last_source_file
== NULL
&& type
!= (unsigned char)N_SO
)
1437 /* Ignore any symbols which appear before an N_SO symbol.
1438 Currently no one puts symbols there, but we should deal
1439 gracefully with the case. A complain()t might be in order,
1440 but this should not be an error (). */
1448 /* On most machines, the block addresses are relative to the
1449 N_SO, the linker did not relocate them (sigh). */
1450 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
1451 new = push_context (desc
, valu
);
1455 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
1456 new = pop_context();
1458 #if !defined (OS9K_VARIABLES_INSIDE_BLOCK)
1459 #define OS9K_VARIABLES_INSIDE_BLOCK(desc, gcc_p) 1
1462 if (!OS9K_VARIABLES_INSIDE_BLOCK(desc
, processing_gcc_compilation
))
1463 local_symbols
= new->locals
;
1465 if (context_stack_depth
> 1)
1467 /* This is not the outermost LBRAC...RBRAC pair in the function,
1468 its local symbols preceded it, and are the ones just recovered
1469 from the context stack. Define the block for them (but don't
1470 bother if the block contains no symbols. Should we complain
1471 on blocks without symbols? I can't think of any useful purpose
1473 if (local_symbols
!= NULL
)
1475 /* Muzzle a compiler bug that makes end < start. (which
1476 compilers? Is this ever harmful?). */
1477 if (new->start_addr
> valu
)
1479 complain (&lbrac_rbrac_complaint
);
1480 new->start_addr
= valu
;
1482 /* Make a block for the local symbols within. */
1483 finish_block (0, &local_symbols
, new->old_blocks
,
1484 new->start_addr
, valu
, objfile
);
1489 if (context_stack_depth
== 0)
1491 within_function
= 0;
1492 /* Make a block for the local symbols within. */
1493 finish_block (new->name
, &local_symbols
, new->old_blocks
,
1494 new->start_addr
, valu
, objfile
);
1498 /* attach local_symbols to the end of new->locals */
1499 if (!new->locals
) new->locals
= local_symbols
;
1504 while (p
->next
) p
= p
->next
;
1505 p
->next
= local_symbols
;
1510 if (OS9K_VARIABLES_INSIDE_BLOCK(desc
, processing_gcc_compilation
))
1511 /* Now pop locals of block just finished. */
1512 local_symbols
= new->locals
;
1517 /* This type of "symbol" really just records
1518 one line-number -- core-address correspondence.
1519 Enter it in the line list for this symbol table. */
1520 /* Relocate for dynamic loading and for ELF acc fn-relative syms. */
1521 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
1522 /* FIXME: loses if sizeof (char *) > sizeof (int) */
1523 record_line (current_subfile
, (int)name
, valu
);
1526 /* The following symbol types need to have the appropriate offset added
1527 to their value; then we process symbol definitions in the name. */
1534 char *p
= strchr (name
, ':');
1544 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
1545 n
= strrchr(name
, '/');
1555 if (symfile_depth
++ == 0) {
1556 if (last_source_file
) {
1557 end_symtab (valu
, objfile
, SECT_OFF_TEXT
);
1562 start_symtab (n
, dirn
, valu
);
1563 record_debugformat ("OS9");
1566 start_subfile (n
, dirn
!=NULL
? dirn
: current_subfile
->dirname
);
1572 valu
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
1573 function_stab_type
= type
;
1575 within_function
= 1;
1576 new = push_context (0, valu
);
1577 new->name
= define_symbol (valu
, name
, desc
, type
, objfile
);
1582 valu
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
1583 define_symbol (valu
, name
, desc
, type
, objfile
);
1587 define_symbol (valu
, name
, desc
, type
, objfile
);
1594 if (--symfile_depth
!= 0)
1595 start_subfile(pop_subfile(), current_subfile
->dirname
);
1599 complain (&unknown_symtype_complaint
,
1600 local_hex_string((unsigned long) type
));
1607 previous_stab_code
= type
;
1610 static struct sym_fns os9k_sym_fns
=
1612 bfd_target_os9k_flavour
,
1613 os9k_new_init
, /* sym_new_init: init anything gbl to entire symtab */
1614 os9k_symfile_init
, /* sym_init: read initial info, setup for sym_read() */
1615 os9k_symfile_read
, /* sym_read: read a symbol file into symtab */
1616 os9k_symfile_finish
, /* sym_finish: finished with file, cleanup */
1617 default_symfile_offsets
,
1618 /* sym_offsets: parse user's offsets to internal form*/
1619 NULL
/* next: pointer to next struct sym_fns */
1623 _initialize_os9kread ()
1625 add_symtab_fns(&os9k_sym_fns
);