1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
5 Free Software Foundation, Inc.
7 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
8 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
11 This file is part of GDB.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 Boston, MA 02110-1301, USA. */
28 /* This module provides the function mdebug_build_psymtabs. It reads
29 ECOFF debugging information into partial symbol tables. The
30 debugging information is read from two structures. A struct
31 ecoff_debug_swap includes the sizes of each ECOFF structure and
32 swapping routines; these are fixed for a particular target. A
33 struct ecoff_debug_info points to the debugging information for a
34 particular object file.
36 ECOFF symbol tables are mostly written in the byte order of the
37 target machine. However, one section of the table (the auxiliary
38 symbol information) is written in the host byte order. There is a
39 bit in the other symbol info which describes which host byte order
40 was used. ECOFF thereby takes the trophy from Intel `b.out' for
41 the most brain-dead adaptation of a file format to byte order.
43 This module can read all four of the known byte-order combinations,
44 on any type of host. */
51 #include "gdb_obstack.h"
53 #include "stabsread.h"
54 #include "complaints.h"
56 #include "gdb_assert.h"
58 #include "dictionary.h"
59 #include "mdebugread.h"
61 #include "gdb_string.h"
65 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
67 #include "libaout.h" /* Private BFD a.out information. */
68 #include "aout/aout64.h"
69 #include "aout/stab_gnu.h" /* STABS information */
71 #include "expression.h"
73 extern void _initialize_mdebugread (void);
75 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
76 We use this define in order to know whether we should override a
77 symbol's ECOFF section with its ELF section. This is necessary in
78 case the symbol's ELF section could not be represented in ECOFF. */
79 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
80 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
83 /* We put a pointer to this structure in the read_symtab_private field
88 /* Index of the FDR that this psymtab represents. */
90 /* The BFD that the psymtab was created from. */
92 const struct ecoff_debug_swap
*debug_swap
;
93 struct ecoff_debug_info
*debug_info
;
94 struct mdebug_pending
**pending_list
;
95 /* Pointer to external symbols for this file. */
97 /* Size of extern_tab. */
99 enum language pst_language
;
102 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
103 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
104 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
105 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
106 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
107 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
109 #define SC_IS_TEXT(sc) ((sc) == scText \
110 || (sc) == scRConst \
113 #define SC_IS_DATA(sc) ((sc) == scData \
118 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
119 #define SC_IS_BSS(sc) ((sc) == scBss)
120 #define SC_IS_SBSS(sc) ((sc) == scSBss)
121 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
123 /* Various complaints about symbol reading that don't abort the process */
125 index_complaint (const char *arg1
)
127 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
131 unknown_ext_complaint (const char *arg1
)
133 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
137 basic_type_complaint (int arg1
, const char *arg2
)
139 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
144 bad_tag_guess_complaint (const char *arg1
)
146 complaint (&symfile_complaints
, _("guessed tag type of %s incorrectly"), arg1
);
150 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
152 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
157 unexpected_type_code_complaint (const char *arg1
)
159 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
162 /* Macros and extra defs */
164 /* Puns: hard to find whether -g was used and how */
166 #define MIN_GLEVEL GLEVEL_0
167 #define compare_glevel(a,b) \
168 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
169 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
171 /* Things that really are local to this module */
173 /* Remember what we deduced to be the source language of this psymtab. */
175 static enum language psymtab_language
= language_unknown
;
181 /* How to parse debugging information for CUR_BFD. */
183 static const struct ecoff_debug_swap
*debug_swap
;
185 /* Pointers to debugging information for CUR_BFD. */
187 static struct ecoff_debug_info
*debug_info
;
189 /* Pointer to current file decriptor record, and its index */
194 /* Index of current symbol */
198 /* Note how much "debuggable" this image is. We would like
199 to see at least one FDR with full symbols */
201 static int max_gdbinfo
;
202 static int max_glevel
;
204 /* When examining .o files, report on undefined symbols */
206 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
208 /* Pseudo symbol to use when putting stabs into the symbol table. */
210 static char stabs_symbol
[] = STABS_SYMBOL
;
212 /* Types corresponding to mdebug format bt* basic types. */
214 static struct type
*mdebug_type_void
;
215 static struct type
*mdebug_type_char
;
216 static struct type
*mdebug_type_short
;
217 static struct type
*mdebug_type_int_32
;
218 #define mdebug_type_int mdebug_type_int_32
219 static struct type
*mdebug_type_int_64
;
220 static struct type
*mdebug_type_long_32
;
221 static struct type
*mdebug_type_long_64
;
222 static struct type
*mdebug_type_long_long_64
;
223 static struct type
*mdebug_type_unsigned_char
;
224 static struct type
*mdebug_type_unsigned_short
;
225 static struct type
*mdebug_type_unsigned_int_32
;
226 static struct type
*mdebug_type_unsigned_int_64
;
227 static struct type
*mdebug_type_unsigned_long_32
;
228 static struct type
*mdebug_type_unsigned_long_64
;
229 static struct type
*mdebug_type_unsigned_long_long_64
;
230 static struct type
*mdebug_type_adr_32
;
231 static struct type
*mdebug_type_adr_64
;
232 static struct type
*mdebug_type_float
;
233 static struct type
*mdebug_type_double
;
234 static struct type
*mdebug_type_complex
;
235 static struct type
*mdebug_type_double_complex
;
236 static struct type
*mdebug_type_fixed_dec
;
237 static struct type
*mdebug_type_float_dec
;
238 static struct type
*mdebug_type_string
;
240 /* Nonzero if we have seen ecoff debugging info for a file. */
242 static int found_ecoff_debugging_info
;
244 /* Forward declarations */
246 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
249 static void parse_partial_symbols (struct objfile
*);
251 static int has_opaque_xref (FDR
*, SYMR
*);
253 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
254 char **, int, char *);
256 static struct symbol
*new_symbol (char *);
258 static struct type
*new_type (char *);
260 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
262 static struct block
*new_block (enum block_type
);
264 static struct symtab
*new_symtab (char *, int, struct objfile
*);
266 static struct linetable
*new_linetable (int);
268 static struct blockvector
*new_bvect (int);
270 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
273 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
276 static void sort_blocks (struct symtab
*);
278 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
280 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
282 static void add_block (struct block
*, struct symtab
*);
284 static void add_symbol (struct symbol
*, struct block
*);
286 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
288 static struct linetable
*shrink_linetable (struct linetable
*);
290 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
293 static char *mdebug_next_symbol_text (struct objfile
*);
295 /* Exported procedure: Builds a symtab from the PST partial one.
296 Restores the environment in effect when PST was created, delegates
297 most of the work to an ancillary procedure, and sorts
298 and reorders the symtab list at the end */
301 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
309 printf_filtered (_("Reading in symbols for %s..."), pst
->filename
);
310 gdb_flush (gdb_stdout
);
313 next_symbol_text_func
= mdebug_next_symbol_text
;
315 psymtab_to_symtab_1 (pst
, pst
->filename
);
317 /* Match with global symbols. This only needs to be done once,
318 after all of the symtabs and dependencies have been read in. */
319 scan_file_globals (pst
->objfile
);
322 printf_filtered (_("done.\n"));
325 /* File-level interface functions */
327 /* Find a file descriptor given its index RF relative to a file CF */
330 get_rfd (int cf
, int rf
)
336 fdrs
= debug_info
->fdr
;
338 /* Object files do not have the RFD table, all refs are absolute */
341 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
342 ((char *) debug_info
->external_rfd
344 * debug_swap
->external_rfd_size
)),
349 /* Return a safer print NAME for a file descriptor */
355 return "<stripped file>";
358 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
362 /* Read in and parse the symtab of the file OBJFILE. Symbols from
363 different sections are relocated via the SECTION_OFFSETS. */
366 mdebug_build_psymtabs (struct objfile
*objfile
,
367 const struct ecoff_debug_swap
*swap
,
368 struct ecoff_debug_info
*info
)
370 cur_bfd
= objfile
->obfd
;
374 stabsread_new_init ();
375 buildsym_new_init ();
376 free_header_files ();
377 init_header_files ();
379 /* Make sure all the FDR information is swapped in. */
380 if (info
->fdr
== (FDR
*) NULL
)
386 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
387 (info
->symbolic_header
.ifdMax
389 fdr_src
= info
->external_fdr
;
391 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
393 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
394 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
397 parse_partial_symbols (objfile
);
400 /* Check to make sure file was compiled with -g. If not, warn the
401 user of this limitation. */
402 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
404 if (max_gdbinfo
== 0)
405 printf_unfiltered (_("\n%s not compiled with -g, debugging support is limited.\n"),
407 printf_unfiltered (_("You should compile with -g2 or -g3 for best debugging support.\n"));
408 gdb_flush (gdb_stdout
);
413 /* Local utilities */
415 /* Map of FDR indexes to partial symtabs */
419 struct partial_symtab
*pst
; /* the psymtab proper */
420 long n_globals
; /* exported globals (external symbols) */
421 long globals_offset
; /* cumulative */
425 /* Utility stack, used to nest procedures and blocks properly.
426 It is a doubly linked list, to avoid too many alloc/free.
427 Since we might need it quite a few times it is NOT deallocated
430 static struct parse_stack
432 struct parse_stack
*next
, *prev
;
433 struct symtab
*cur_st
; /* Current symtab. */
434 struct block
*cur_block
; /* Block in it. */
436 /* What are we parsing. stFile, or stBlock are for files and
437 blocks. stProc or stStaticProc means we have seen the start of a
438 procedure, but not the start of the block within in. When we see
439 the start of that block, we change it to stNil, without pushing a
440 new block, i.e. stNil means both a procedure and a block. */
444 struct type
*cur_type
; /* Type we parse fields for. */
445 int cur_field
; /* Field number in cur_type. */
446 CORE_ADDR procadr
; /* Start addres of this procedure */
447 int numargs
; /* Its argument count */
450 *top_stack
; /* Top stack ptr */
453 /* Enter a new lexical context */
456 push_parse_stack (void)
458 struct parse_stack
*new;
460 /* Reuse frames if possible */
461 if (top_stack
&& top_stack
->prev
)
462 new = top_stack
->prev
;
464 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
465 /* Initialize new frame with previous content */
468 struct parse_stack
*prev
= new->prev
;
471 top_stack
->prev
= new;
473 new->next
= top_stack
;
478 /* Exit a lexical context */
481 pop_parse_stack (void)
486 top_stack
= top_stack
->next
;
490 /* Cross-references might be to things we haven't looked at
491 yet, e.g. type references. To avoid too many type
492 duplications we keep a quick fixup table, an array
493 of lists of references indexed by file descriptor */
495 struct mdebug_pending
497 struct mdebug_pending
*next
; /* link */
498 char *s
; /* the unswapped symbol */
499 struct type
*t
; /* its partial type descriptor */
503 /* The pending information is kept for an entire object file, and used
504 to be in the deprecated_sym_private field. I took it out when I
505 split mdebugread from mipsread, because this might not be the only
506 type of symbols read from an object file. Instead, we allocate the
507 pending information table when we create the partial symbols, and
508 we store a pointer to the single table in each psymtab. */
510 static struct mdebug_pending
**pending_list
;
512 /* Check whether we already saw symbol SH in file FH */
514 static struct mdebug_pending
*
515 is_pending_symbol (FDR
*fh
, char *sh
)
517 int f_idx
= fh
- debug_info
->fdr
;
518 struct mdebug_pending
*p
;
520 /* Linear search is ok, list is typically no more than 10 deep */
521 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
527 /* Add a new symbol SH of type T */
530 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
532 int f_idx
= fh
- debug_info
->fdr
;
533 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
535 /* Make sure we do not make duplicates */
538 p
= ((struct mdebug_pending
*)
539 obstack_alloc (¤t_objfile
->objfile_obstack
,
540 sizeof (struct mdebug_pending
)));
543 p
->next
= pending_list
[f_idx
];
544 pending_list
[f_idx
] = p
;
549 /* Parsing Routines proper. */
551 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
552 For blocks, procedures and types we open a new lexical context.
553 This is basically just a big switch on the symbol's type. Argument
554 AX is the base pointer of aux symbols for this file (fh->iauxBase).
555 EXT_SH points to the unswapped symbol, which is needed for struct,
556 union, etc., types; it is NULL for an EXTR. BIGEND says whether
557 aux symbols are big-endian or little-endian. Return count of
558 SYMR's handled (normally one). */
561 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
562 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
564 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
565 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
569 struct mdebug_pending
*pend
;
573 enum address_class
class;
575 long svalue
= sh
->value
;
578 if (ext_sh
== (char *) NULL
)
579 name
= debug_info
->ssext
+ sh
->iss
;
581 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
587 /* Do not relocate relative values.
588 The value of a stEnd symbol is the displacement from the
589 corresponding start symbol value.
590 The value of a stBlock symbol is the displacement from the
591 procedure address. */
592 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
593 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
600 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
604 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
613 case stGlobal
: /* external symbol, goes into global block */
615 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
617 s
= new_symbol (name
);
618 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
621 case stStatic
: /* static data, goes into current block. */
623 b
= top_stack
->cur_block
;
624 s
= new_symbol (name
);
625 if (SC_IS_COMMON (sh
->sc
))
627 /* It is a FORTRAN common block. At least for SGI Fortran the
628 address is not in the symbol; we need to fix it later in
629 scan_file_globals. */
630 int bucket
= hashname (DEPRECATED_SYMBOL_NAME (s
));
631 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
632 global_sym_chain
[bucket
] = s
;
635 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
638 case stLocal
: /* local variable, goes into current block */
639 if (sh
->sc
== scRegister
)
641 class = LOC_REGISTER
;
642 svalue
= gdbarch_ecoff_reg_to_regnum (current_gdbarch
, svalue
);
646 b
= top_stack
->cur_block
;
647 s
= new_symbol (name
);
648 SYMBOL_VALUE (s
) = svalue
;
650 data
: /* Common code for symbols describing data */
651 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
652 SYMBOL_CLASS (s
) = class;
655 /* Type could be missing if file is compiled without debugging info. */
656 if (SC_IS_UNDEF (sh
->sc
)
657 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
658 SYMBOL_TYPE (s
) = builtin_type (current_gdbarch
)->nodebug_data_symbol
;
660 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
661 /* Value of a data symbol is its memory address */
664 case stParam
: /* arg to procedure, goes into current block */
666 found_ecoff_debugging_info
= 1;
667 top_stack
->numargs
++;
669 /* Special GNU C++ name. */
670 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
671 name
= "this"; /* FIXME, not alloc'd in obstack */
672 s
= new_symbol (name
);
674 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
678 /* Pass by value in register. */
679 SYMBOL_CLASS (s
) = LOC_REGPARM
;
680 svalue
= gdbarch_ecoff_reg_to_regnum (current_gdbarch
, svalue
);
683 /* Pass by reference on stack. */
684 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
687 /* Pass by reference in register. */
688 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
689 svalue
= gdbarch_ecoff_reg_to_regnum (current_gdbarch
, svalue
);
692 /* Pass by value on stack. */
693 SYMBOL_CLASS (s
) = LOC_ARG
;
696 SYMBOL_VALUE (s
) = svalue
;
697 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
698 add_symbol (s
, top_stack
->cur_block
);
701 case stLabel
: /* label, goes into current block */
702 s
= new_symbol (name
);
703 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* so that it can be used */
704 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
705 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
706 SYMBOL_TYPE (s
) = mdebug_type_int
;
707 add_symbol (s
, top_stack
->cur_block
);
710 case stProc
: /* Procedure, usually goes into global block */
711 case stStaticProc
: /* Static procedure, goes into current block */
712 /* For stProc symbol records, we need to check the storage class
713 as well, as only (stProc, scText) entries represent "real"
714 procedures - See the Compaq document titled "Object File /
715 Symbol Table Format Specification" for more information.
716 If the storage class is not scText, we discard the whole block
717 of symbol records for this stProc. */
718 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
720 char *ext_tsym
= ext_sh
;
721 int keep_counting
= 1;
724 while (keep_counting
)
726 ext_tsym
+= external_sym_size
;
727 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
737 complaint (&symfile_complaints
,
738 _("unknown symbol type 0x%x"), sh
->st
);
744 s
= new_symbol (name
);
745 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
746 SYMBOL_CLASS (s
) = LOC_BLOCK
;
747 /* Type of the return value */
748 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
752 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
753 if (strcmp (name
, "malloc") == 0
754 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
756 /* I don't know why, but, at least under Alpha GNU/Linux,
757 when linking against a malloc without debugging
758 symbols, its read as a function returning void---this
759 is bad because it means we cannot call functions with
760 string arguments interactively; i.e., "call
761 printf("howdy\n")" would fail with the error message
762 "program has no memory available". To avoid this, we
763 patch up the type and make it void*
764 instead. (davidm@azstarnet.com)
766 t
= make_pointer_type (t
, NULL
);
769 b
= top_stack
->cur_block
;
770 if (sh
->st
== stProc
)
772 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
773 /* The next test should normally be true, but provides a
774 hook for nested functions (which we don't want to make
776 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
777 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
778 /* Irix 5 sometimes has duplicate names for the same
779 function. We want to add such names up at the global
780 level, not as a nested function. */
781 else if (sh
->value
== top_stack
->procadr
)
782 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
786 /* Make a type for the procedure itself */
787 SYMBOL_TYPE (s
) = lookup_function_type (t
);
789 /* All functions in C++ have prototypes. For C we don't have enough
790 information in the debug info. */
791 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
792 TYPE_FLAGS (SYMBOL_TYPE (s
)) |= TYPE_FLAG_PROTOTYPED
;
794 /* Create and enter a new lexical context */
795 b
= new_block (FUNCTION_BLOCK
);
796 SYMBOL_BLOCK_VALUE (s
) = b
;
797 BLOCK_FUNCTION (b
) = s
;
798 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
799 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
800 add_block (b
, top_stack
->cur_st
);
802 /* Not if we only have partial info */
803 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
807 top_stack
->cur_block
= b
;
808 top_stack
->blocktype
= sh
->st
;
809 top_stack
->cur_type
= SYMBOL_TYPE (s
);
810 top_stack
->cur_field
= -1;
811 top_stack
->procadr
= sh
->value
;
812 top_stack
->numargs
= 0;
815 /* Beginning of code for structure, union, and enum definitions.
816 They all share a common set of local variables, defined here. */
818 enum type_code type_code
;
824 case stStruct
: /* Start a block defining a struct type */
825 type_code
= TYPE_CODE_STRUCT
;
826 goto structured_common
;
828 case stUnion
: /* Start a block defining a union type */
829 type_code
= TYPE_CODE_UNION
;
830 goto structured_common
;
832 case stEnum
: /* Start a block defining an enum type */
833 type_code
= TYPE_CODE_ENUM
;
834 goto structured_common
;
836 case stBlock
: /* Either a lexical block, or some type */
837 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
838 goto case_stBlock_code
; /* Lexical block */
840 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
842 /* Common code for handling struct, union, enum, and/or as-yet-
843 unknown-type blocks of info about structured data. `type_code'
844 has been set to the proper TYPE_CODE, if we know it. */
846 found_ecoff_debugging_info
= 1;
848 top_stack
->blocktype
= stBlock
;
850 /* First count the number of fields and the highest value. */
853 for (ext_tsym
= ext_sh
+ external_sym_size
;
855 ext_tsym
+= external_sym_size
)
859 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
864 /* C++ encodes class types as structures where there the
865 methods are encoded as stProc. The scope of stProc
866 symbols also ends with stEnd, thus creating a risk of
867 taking the wrong stEnd symbol record as the end of
868 the current struct, which would cause GDB to undercount
869 the real number of fields in this struct. To make sure
870 we really reached the right stEnd symbol record, we
871 check the associated name, and match it against the
872 struct name. Since method names are mangled while
873 the class name is not, there is no risk of having a
874 method whose name is identical to the class name
875 (in particular constructor method names are different
876 from the class name). There is therefore no risk that
877 this check stops the count on the StEnd of a method.
879 Also, assume that we're really at the end when tsym.iss
881 if (tsym
.iss
== issNull
882 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
888 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
890 /* If the type of the member is Nil (or Void),
891 without qualifiers, assume the tag is an
893 Alpha cc -migrate enums are recognized by a zero
894 index and a zero symbol value.
895 DU 4.0 cc enums are recognized by a member type of
896 btEnum without qualifiers and a zero symbol value. */
897 if (tsym
.index
== indexNil
898 || (tsym
.index
== 0 && sh
->value
== 0))
899 type_code
= TYPE_CODE_ENUM
;
902 (*debug_swap
->swap_tir_in
) (bigend
,
903 &ax
[tsym
.index
].a_ti
,
905 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
906 || (tir
.bt
== btEnum
&& sh
->value
== 0))
908 type_code
= TYPE_CODE_ENUM
;
912 if (tsym
.value
> max_value
)
913 max_value
= tsym
.value
;
922 /* This is a no-op; is it trying to tell us something
923 we should be checking? */
924 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
928 /* This is something like a struct within a
929 struct. Skip over the fields of the inner
930 struct. The -1 is because the for loop will
931 increment ext_tsym. */
932 ext_tsym
= ((char *) debug_info
->external_sym
933 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
934 * external_sym_size
));
940 /* mips cc puts out a typedef for struct x if it is not yet
941 defined when it encounters
942 struct y { struct x *xp; };
947 /* Irix5 cc puts out a stIndirect for struct x if it is not
948 yet defined when it encounters
949 struct y { struct x *xp; };
954 complaint (&symfile_complaints
,
955 _("declaration block contains unhandled symbol type %d"),
961 /* In an stBlock, there is no way to distinguish structs,
962 unions, and enums at this point. This is a bug in the
963 original design (that has been fixed with the recent
964 addition of the stStruct, stUnion, and stEnum symbol
965 types.) The way you can tell is if/when you see a variable
966 or field of that type. In that case the variable's type
967 (in the AUX table) says if the type is struct, union, or
968 enum, and points back to the stBlock here. So you can
969 patch the tag kind up later - but only if there actually is
970 a variable or field of that type.
972 So until we know for sure, we will guess at this point.
974 If the first member has index==indexNil or a void type,
975 assume we have an enumeration.
976 Otherwise, if there is more than one member, and all
977 the members have offset 0, assume we have a union.
978 Otherwise, assume we have a struct.
980 The heuristic could guess wrong in the case of of an
981 enumeration with no members or a union with one (or zero)
982 members, or when all except the last field of a struct have
983 width zero. These are uncommon and/or illegal situations,
984 and in any case guessing wrong probably doesn't matter
987 But if we later do find out we were wrong, we fixup the tag
988 kind. Members of an enumeration must be handled
989 differently from struct/union fields, and that is harder to
990 patch up, but luckily we shouldn't need to. (If there are
991 any enumeration members, we can tell for sure it's an enum
994 if (type_code
== TYPE_CODE_UNDEF
)
996 if (nfields
> 1 && max_value
== 0)
997 type_code
= TYPE_CODE_UNION
;
999 type_code
= TYPE_CODE_STRUCT
;
1002 /* Create a new type or use the pending type. */
1003 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1004 if (pend
== (struct mdebug_pending
*) NULL
)
1006 t
= new_type (NULL
);
1007 add_pending (cur_fdr
, ext_sh
, t
);
1012 /* Do not set the tag name if it is a compiler generated tag name
1013 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1014 Alpha cc puts out an sh->iss of zero for those. */
1015 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1016 TYPE_TAG_NAME (t
) = NULL
;
1018 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->objfile_obstack
,
1021 TYPE_CODE (t
) = type_code
;
1022 TYPE_LENGTH (t
) = sh
->value
;
1023 TYPE_NFIELDS (t
) = nfields
;
1024 TYPE_FIELDS (t
) = f
= ((struct field
*)
1026 nfields
* sizeof (struct field
)));
1028 if (type_code
== TYPE_CODE_ENUM
)
1030 int unsigned_enum
= 1;
1032 /* This is a non-empty enum. */
1034 /* DEC c89 has the number of enumerators in the sh.value field,
1035 not the type length, so we have to compensate for that
1036 incompatibility quirk.
1037 This might do the wrong thing for an enum with one or two
1038 enumerators and gcc -gcoff -fshort-enums, but these cases
1039 are hopefully rare enough.
1040 Alpha cc -migrate has a sh.value field of zero, we adjust
1042 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1043 || TYPE_LENGTH (t
) == 0)
1045 gdbarch_int_bit (current_gdbarch
) / HOST_CHAR_BIT
;
1046 for (ext_tsym
= ext_sh
+ external_sym_size
;
1048 ext_tsym
+= external_sym_size
)
1051 struct symbol
*enum_sym
;
1053 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1055 if (tsym
.st
!= stMember
)
1058 FIELD_BITPOS (*f
) = tsym
.value
;
1059 FIELD_TYPE (*f
) = t
;
1060 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1061 FIELD_BITSIZE (*f
) = 0;
1062 FIELD_STATIC_KIND (*f
) = 0;
1064 enum_sym
= ((struct symbol
*)
1065 obstack_alloc (¤t_objfile
->objfile_obstack
,
1066 sizeof (struct symbol
)));
1067 memset (enum_sym
, 0, sizeof (struct symbol
));
1068 DEPRECATED_SYMBOL_NAME (enum_sym
) =
1069 obsavestring (f
->name
, strlen (f
->name
),
1070 ¤t_objfile
->objfile_obstack
);
1071 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1072 SYMBOL_TYPE (enum_sym
) = t
;
1073 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1074 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1075 if (SYMBOL_VALUE (enum_sym
) < 0)
1077 add_symbol (enum_sym
, top_stack
->cur_block
);
1079 /* Skip the stMembers that we've handled. */
1084 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1086 /* make this the current type */
1087 top_stack
->cur_type
= t
;
1088 top_stack
->cur_field
= 0;
1090 /* Do not create a symbol for alpha cc unnamed structs. */
1094 /* gcc puts out an empty struct for an opaque struct definitions,
1095 do not create a symbol for it either. */
1096 if (TYPE_NFIELDS (t
) == 0)
1098 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1102 s
= new_symbol (name
);
1103 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1104 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1105 SYMBOL_VALUE (s
) = 0;
1106 SYMBOL_TYPE (s
) = t
;
1107 add_symbol (s
, top_stack
->cur_block
);
1110 /* End of local variables shared by struct, union, enum, and
1111 block (as yet unknown struct/union/enum) processing. */
1115 found_ecoff_debugging_info
= 1;
1116 /* beginnning of (code) block. Value of symbol
1117 is the displacement from procedure start */
1118 push_parse_stack ();
1120 /* Do not start a new block if this is the outermost block of a
1121 procedure. This allows the LOC_BLOCK symbol to point to the
1122 block with the local variables, so funcname::var works. */
1123 if (top_stack
->blocktype
== stProc
1124 || top_stack
->blocktype
== stStaticProc
)
1126 top_stack
->blocktype
= stNil
;
1130 top_stack
->blocktype
= stBlock
;
1131 b
= new_block (NON_FUNCTION_BLOCK
);
1132 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1133 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1134 top_stack
->cur_block
= b
;
1135 add_block (b
, top_stack
->cur_st
);
1138 case stEnd
: /* end (of anything) */
1139 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1141 /* Finished with type */
1142 top_stack
->cur_type
= 0;
1144 else if (sh
->sc
== scText
&&
1145 (top_stack
->blocktype
== stProc
||
1146 top_stack
->blocktype
== stStaticProc
))
1148 /* Finished with procedure */
1149 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1150 struct mdebug_extra_func_info
*e
;
1151 struct block
*b
= top_stack
->cur_block
;
1152 struct type
*ftype
= top_stack
->cur_type
;
1155 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1157 /* Make up special symbol to contain procedure specific info */
1158 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1159 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1160 SYMBOL_CLASS (s
) = LOC_CONST
;
1161 SYMBOL_TYPE (s
) = mdebug_type_void
;
1162 e
= ((struct mdebug_extra_func_info
*)
1163 obstack_alloc (¤t_objfile
->objfile_obstack
,
1164 sizeof (struct mdebug_extra_func_info
)));
1165 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1166 SYMBOL_VALUE (s
) = (long) e
;
1167 e
->numargs
= top_stack
->numargs
;
1168 e
->pdr
.framereg
= -1;
1169 add_symbol (s
, top_stack
->cur_block
);
1171 /* f77 emits proc-level with address bounds==[0,0],
1172 So look for such child blocks, and patch them. */
1173 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1175 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1176 if (BLOCK_SUPERBLOCK (b_bad
) == b
1177 && BLOCK_START (b_bad
) == top_stack
->procadr
1178 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1180 BLOCK_START (b_bad
) = BLOCK_START (b
);
1181 BLOCK_END (b_bad
) = BLOCK_END (b
);
1185 if (TYPE_NFIELDS (ftype
) <= 0)
1187 /* No parameter type information is recorded with the function's
1188 type. Set that from the type of the parameter symbols. */
1189 int nparams
= top_stack
->numargs
;
1195 struct dict_iterator iter
;
1196 TYPE_NFIELDS (ftype
) = nparams
;
1197 TYPE_FIELDS (ftype
) = (struct field
*)
1198 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1201 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1203 if (iparams
== nparams
)
1206 switch (SYMBOL_CLASS (sym
))
1211 case LOC_REGPARM_ADDR
:
1212 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1213 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1223 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1225 /* End of (code) block. The value of the symbol is the
1226 displacement from the procedure`s start address of the
1227 end of this block. */
1228 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1230 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1232 /* End of outermost block. Pop parse stack and ignore. The
1233 following stEnd of stProc will take care of the block. */
1236 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1238 /* End of file. Pop parse stack and ignore. Higher
1239 level code deals with this. */
1243 complaint (&symfile_complaints
,
1244 _("stEnd with storage class %d not handled"), sh
->sc
);
1246 pop_parse_stack (); /* restore previous lexical context */
1249 case stMember
: /* member of struct or union */
1250 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1251 FIELD_NAME (*f
) = name
;
1252 FIELD_BITPOS (*f
) = sh
->value
;
1254 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1255 FIELD_BITSIZE (*f
) = bitsize
;
1256 FIELD_STATIC_KIND (*f
) = 0;
1259 case stIndirect
: /* forward declaration on Irix5 */
1260 /* Forward declarations from Irix5 cc are handled by cross_ref,
1264 case stTypedef
: /* type definition */
1265 found_ecoff_debugging_info
= 1;
1267 /* Typedefs for forward declarations and opaque structs from alpha cc
1268 are handled by cross_ref, skip them. */
1272 /* Parse the type or use the pending type. */
1273 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1274 if (pend
== (struct mdebug_pending
*) NULL
)
1276 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1277 add_pending (cur_fdr
, ext_sh
, t
);
1282 /* mips cc puts out a typedef with the name of the struct for forward
1283 declarations. These should not go into the symbol table and
1284 TYPE_NAME should not be set for them.
1285 They can't be distinguished from an intentional typedef to
1286 the same name however:
1288 struct x { int ix; int jx; };
1292 struct xx {int ixx; int jxx; };
1293 generates a cross referencing stTypedef for x and xx.
1294 The user visible effect of this is that the type of a pointer
1295 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1296 The problem is fixed with alpha cc and Irix5 cc. */
1298 /* However if the typedef cross references to an opaque aggregate, it
1299 is safe to omit it from the symbol table. */
1301 if (has_opaque_xref (cur_fdr
, sh
))
1303 s
= new_symbol (name
);
1304 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1305 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1306 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1307 SYMBOL_TYPE (s
) = t
;
1308 add_symbol (s
, top_stack
->cur_block
);
1310 /* Incomplete definitions of structs should not get a name. */
1311 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1312 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1313 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1314 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1316 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1317 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1319 /* If we are giving a name to a type such as "pointer to
1320 foo" or "function returning foo", we better not set
1321 the TYPE_NAME. If the program contains "typedef char
1322 *caddr_t;", we don't want all variables of type char
1323 * to print as caddr_t. This is not just a
1324 consequence of GDB's type management; CC and GCC (at
1325 least through version 2.4) both output variables of
1326 either type char * or caddr_t with the type
1327 refering to the stTypedef symbol for caddr_t. If a future
1328 compiler cleans this up it GDB is not ready for it
1329 yet, but if it becomes ready we somehow need to
1330 disable this check (without breaking the PCC/GCC2.4
1335 Fortunately, this check seems not to be necessary
1336 for anything except pointers or functions. */
1339 TYPE_NAME (SYMBOL_TYPE (s
)) = DEPRECATED_SYMBOL_NAME (s
);
1343 case stFile
: /* file name */
1344 push_parse_stack ();
1345 top_stack
->blocktype
= sh
->st
;
1348 /* I`ve never seen these for C */
1350 break; /* register relocation */
1352 break; /* forwarding address */
1354 break; /* constant */
1356 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1363 /* Parse the type information provided in the raw AX entries for
1364 the symbol SH. Return the bitfield size in BS, in case.
1365 We must byte-swap the AX entries before we use them; BIGEND says whether
1366 they are big-endian or little-endian (from fh->fBigendian). */
1368 static struct type
*
1369 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1370 int bigend
, char *sym_name
)
1372 /* Null entries in this map are treated specially */
1373 static struct type
**map_bt
[] =
1375 &mdebug_type_void
, /* btNil */
1376 &mdebug_type_adr_32
, /* btAdr */
1377 &mdebug_type_char
, /* btChar */
1378 &mdebug_type_unsigned_char
, /* btUChar */
1379 &mdebug_type_short
, /* btShort */
1380 &mdebug_type_unsigned_short
, /* btUShort */
1381 &mdebug_type_int_32
, /* btInt */
1382 &mdebug_type_unsigned_int_32
, /* btUInt */
1383 &mdebug_type_long_32
, /* btLong */
1384 &mdebug_type_unsigned_long_32
, /* btULong */
1385 &mdebug_type_float
, /* btFloat */
1386 &mdebug_type_double
, /* btDouble */
1393 &mdebug_type_complex
, /* btComplex */
1394 &mdebug_type_double_complex
, /* btDComplex */
1396 &mdebug_type_fixed_dec
, /* btFixedDec */
1397 &mdebug_type_float_dec
, /* btFloatDec */
1398 &mdebug_type_string
, /* btString */
1401 &mdebug_type_void
, /* btVoid */
1402 0, /* DEC C++: Pointer to member */
1403 0, /* DEC C++: Virtual function table */
1404 0, /* DEC C++: Class (Record) */
1405 &mdebug_type_long_64
, /* btLong64 */
1406 &mdebug_type_unsigned_long_64
, /* btULong64 */
1407 &mdebug_type_long_long_64
, /* btLongLong64 */
1408 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1409 &mdebug_type_adr_64
, /* btAdr64 */
1410 &mdebug_type_int_64
, /* btInt64 */
1411 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1415 struct type
*tp
= 0;
1416 enum type_code type_code
= TYPE_CODE_UNDEF
;
1418 /* Handle undefined types, they have indexNil. */
1419 if (aux_index
== indexNil
)
1420 return mdebug_type_int
;
1422 /* Handle corrupt aux indices. */
1423 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1425 index_complaint (sym_name
);
1426 return mdebug_type_int
;
1430 /* Use aux as a type information record, map its basic type. */
1431 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1432 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1434 basic_type_complaint (t
->bt
, sym_name
);
1435 return mdebug_type_int
;
1439 tp
= *map_bt
[t
->bt
];
1444 /* Cannot use builtin types -- build our own */
1448 type_code
= TYPE_CODE_STRUCT
;
1451 type_code
= TYPE_CODE_UNION
;
1454 type_code
= TYPE_CODE_ENUM
;
1457 type_code
= TYPE_CODE_RANGE
;
1460 type_code
= TYPE_CODE_SET
;
1463 /* alpha cc -migrate uses this for typedefs. The true type will
1464 be obtained by crossreferencing below. */
1465 type_code
= TYPE_CODE_ERROR
;
1468 /* alpha cc uses this for typedefs. The true type will be
1469 obtained by crossreferencing below. */
1470 type_code
= TYPE_CODE_ERROR
;
1473 basic_type_complaint (t
->bt
, sym_name
);
1474 return mdebug_type_int
;
1478 /* Move on to next aux */
1483 int width
= AUX_GET_WIDTH (bigend
, ax
);
1484 /* Inhibit core dumps if TIR is corrupted. */
1485 if (bs
== (int *) NULL
)
1487 /* Alpha cc -migrate encodes char and unsigned char types
1488 as short and unsigned short types with a field width of 8.
1489 Enum types also have a field width which we ignore for now. */
1490 if (t
->bt
== btShort
&& width
== 8)
1491 tp
= mdebug_type_char
;
1492 else if (t
->bt
== btUShort
&& width
== 8)
1493 tp
= mdebug_type_unsigned_char
;
1494 else if (t
->bt
== btEnum
)
1497 complaint (&symfile_complaints
, _("can't handle TIR fBitfield for %s"),
1505 /* A btIndirect entry cross references to an aux entry containing
1507 if (t
->bt
== btIndirect
)
1514 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1516 if (rn
->rfd
== 0xfff)
1518 rf
= AUX_GET_ISYM (bigend
, ax
);
1526 complaint (&symfile_complaints
,
1527 _("unable to cross ref btIndirect for %s"), sym_name
);
1528 return mdebug_type_int
;
1530 xref_fh
= get_rfd (fd
, rf
);
1531 xref_fd
= xref_fh
- debug_info
->fdr
;
1532 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1533 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1536 /* All these types really point to some (common) MIPS type
1537 definition, and only the type-qualifiers fully identify
1538 them. We'll make the same effort at sharing. */
1539 if (t
->bt
== btStruct
||
1543 /* btSet (I think) implies that the name is a tag name, not a typedef
1544 name. This apparently is a MIPS extension for C sets. */
1549 /* Try to cross reference this type, build new type on failure. */
1550 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1551 if (tp
== (struct type
*) NULL
)
1552 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1554 /* DEC c89 produces cross references to qualified aggregate types,
1555 dereference them. */
1556 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1557 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1558 tp
= TYPE_TARGET_TYPE (tp
);
1560 /* Make sure that TYPE_CODE(tp) has an expected type code.
1561 Any type may be returned from cross_ref if file indirect entries
1563 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1564 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1565 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1567 unexpected_type_code_complaint (sym_name
);
1572 /* Usually, TYPE_CODE(tp) is already type_code. The main
1573 exception is if we guessed wrong re struct/union/enum.
1574 But for struct vs. union a wrong guess is harmless, so
1575 don't complain(). */
1576 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1577 && type_code
!= TYPE_CODE_ENUM
)
1578 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1579 && type_code
== TYPE_CODE_ENUM
))
1581 bad_tag_guess_complaint (sym_name
);
1584 if (TYPE_CODE (tp
) != type_code
)
1586 TYPE_CODE (tp
) = type_code
;
1589 /* Do not set the tag name if it is a compiler generated tag name
1590 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1591 if (name
[0] == '.' || name
[0] == '\0')
1592 TYPE_TAG_NAME (tp
) = NULL
;
1593 else if (TYPE_TAG_NAME (tp
) == NULL
1594 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1595 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1596 ¤t_objfile
->objfile_obstack
);
1600 /* All these types really point to some (common) MIPS type
1601 definition, and only the type-qualifiers fully identify
1602 them. We'll make the same effort at sharing.
1603 FIXME: We are not doing any guessing on range types. */
1604 if (t
->bt
== btRange
)
1608 /* Try to cross reference this type, build new type on failure. */
1609 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1610 if (tp
== (struct type
*) NULL
)
1611 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1613 /* Make sure that TYPE_CODE(tp) has an expected type code.
1614 Any type may be returned from cross_ref if file indirect entries
1616 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1618 unexpected_type_code_complaint (sym_name
);
1622 /* Usually, TYPE_CODE(tp) is already type_code. The main
1623 exception is if we guessed wrong re struct/union/enum. */
1624 if (TYPE_CODE (tp
) != type_code
)
1626 bad_tag_guess_complaint (sym_name
);
1627 TYPE_CODE (tp
) = type_code
;
1629 if (TYPE_NAME (tp
) == NULL
1630 || strcmp (TYPE_NAME (tp
), name
) != 0)
1631 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1632 ¤t_objfile
->objfile_obstack
);
1635 if (t
->bt
== btTypedef
)
1639 /* Try to cross reference this type, it should succeed. */
1640 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1641 if (tp
== (struct type
*) NULL
)
1643 complaint (&symfile_complaints
,
1644 _("unable to cross ref btTypedef for %s"), sym_name
);
1645 tp
= mdebug_type_int
;
1649 /* Deal with range types */
1650 if (t
->bt
== btRange
)
1652 TYPE_NFIELDS (tp
) = 2;
1653 TYPE_FIELDS (tp
) = ((struct field
*)
1654 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1655 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1656 ¤t_objfile
->objfile_obstack
);
1657 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1659 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1660 ¤t_objfile
->objfile_obstack
);
1661 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1665 /* Parse all the type qualifiers now. If there are more
1666 than 6 the game will continue in the next aux */
1670 #define PARSE_TQ(tq) \
1671 if (t->tq != tqNil) \
1672 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1684 /* mips cc 2.x and gcc never put out continued aux entries. */
1688 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1692 /* Complain for illegal continuations due to corrupt aux entries. */
1694 complaint (&symfile_complaints
, _("illegal TIR continued for %s"), sym_name
);
1699 /* Make up a complex type from a basic one. Type is passed by
1700 reference in TPP and side-effected as necessary. The type
1701 qualifier TQ says how to handle the aux symbols at AX for
1702 the symbol SX we are currently analyzing. BIGEND says whether
1703 aux symbols are big-endian or little-endian.
1704 Returns the number of aux symbols we parsed. */
1707 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1713 /* Used in array processing */
1724 t
= lookup_pointer_type (*tpp
);
1729 t
= lookup_function_type (*tpp
);
1736 /* Determine and record the domain type (type of index) */
1737 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1743 rf
= AUX_GET_ISYM (bigend
, ax
);
1746 fh
= get_rfd (fd
, rf
);
1748 indx
= parse_type (fh
- debug_info
->fdr
,
1749 debug_info
->external_aux
+ fh
->iauxBase
,
1750 id
, (int *) NULL
, bigend
, sym_name
);
1752 /* The bounds type should be an integer type, but might be anything
1753 else due to corrupt aux entries. */
1754 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1756 complaint (&symfile_complaints
,
1757 _("illegal array index type for %s, assuming int"), sym_name
);
1758 indx
= mdebug_type_int
;
1761 /* Get the bounds, and create the array type. */
1763 lower
= AUX_GET_DNLOW (bigend
, ax
);
1765 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1767 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1769 range
= create_range_type ((struct type
*) NULL
, indx
,
1772 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1774 /* We used to fill in the supplied array element bitsize
1775 here if the TYPE_LENGTH of the target type was zero.
1776 This happens for a `pointer to an array of anonymous structs',
1777 but in this case the array element bitsize is also zero,
1778 so nothing is gained.
1779 And we used to check the TYPE_LENGTH of the target type against
1780 the supplied array element bitsize.
1781 gcc causes a mismatch for `pointer to array of object',
1782 since the sdb directives it uses do not have a way of
1783 specifying the bitsize, but it does no harm (the
1784 TYPE_LENGTH should be correct) and we should be able to
1785 ignore the erroneous bitsize from the auxiliary entry safely.
1786 dbx seems to ignore it too. */
1788 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1790 if (TYPE_LENGTH (*tpp
) == 0)
1792 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1799 /* Volatile -- currently ignored */
1803 /* Const -- currently ignored */
1807 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1813 /* Parse a procedure descriptor record PR. Note that the procedure is
1814 parsed _after_ the local symbols, now we just insert the extra
1815 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1816 already been placed in the procedure's main block. Note also that
1817 images that have been partially stripped (ld -x) have been deprived
1818 of local symbols, and we have to cope with them here. FIRST_OFF is
1819 the offset of the first procedure for this FDR; we adjust the
1820 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1821 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1822 in question, or NULL to use top_stack->cur_block. */
1824 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1827 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1828 struct partial_symtab
*pst
)
1830 struct symbol
*s
, *i
;
1832 struct mdebug_extra_func_info
*e
;
1835 /* Simple rule to find files linked "-x" */
1836 if (cur_fdr
->rss
== -1)
1840 /* Static procedure at address pr->adr. Sigh. */
1841 /* FIXME-32x64. assuming pr->adr fits in long. */
1842 complaint (&symfile_complaints
,
1843 _("can't handle PDR for static proc at 0x%lx"),
1844 (unsigned long) pr
->adr
);
1852 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1853 ((char *) debug_info
->external_ext
1855 * debug_swap
->external_ext_size
)),
1857 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1865 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1866 ((char *) debug_info
->external_sym
1867 + ((cur_fdr
->isymBase
+ pr
->isym
)
1868 * debug_swap
->external_sym_size
)),
1870 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1873 if (search_symtab
!= NULL
)
1876 /* This loses both in the case mentioned (want a static, find a global),
1877 but also if we are looking up a non-mangled name which happens to
1878 match the name of a mangled function. */
1879 /* We have to save the cur_fdr across the call to lookup_symbol.
1880 If the pdr is for a static function and if a global function with
1881 the same name exists, lookup_symbol will eventually read in the symtab
1882 for the global function and clobber cur_fdr. */
1883 FDR
*save_cur_fdr
= cur_fdr
;
1884 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0, NULL
);
1885 cur_fdr
= save_cur_fdr
;
1889 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1895 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1896 VAR_DOMAIN
, LOC_BLOCK
);
1900 b
= SYMBOL_BLOCK_VALUE (s
);
1904 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
1908 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1909 s
= new_symbol (sh_name
);
1910 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1911 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1912 /* Donno its type, hope int is ok */
1913 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1914 add_symbol (s
, top_stack
->cur_block
);
1915 /* Wont have symbols for this one */
1917 SYMBOL_BLOCK_VALUE (s
) = b
;
1918 BLOCK_FUNCTION (b
) = s
;
1919 BLOCK_START (b
) = pr
->adr
;
1920 /* BOUND used to be the end of procedure's text, but the
1921 argument is no longer passed in. */
1922 BLOCK_END (b
) = bound
;
1923 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1924 add_block (b
, top_stack
->cur_st
);
1928 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
1932 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE (i
);
1934 e
->pdr
.isym
= (long) s
;
1936 /* GDB expects the absolute function start address for the
1937 procedure descriptor in e->pdr.adr.
1938 As the address in the procedure descriptor is usually relative,
1939 we would have to relocate e->pdr.adr with cur_fdr->adr and
1940 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1941 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1942 in shared libraries on some systems, and on other systems
1943 e->pdr.adr is sometimes offset by a bogus value.
1944 To work around these problems, we replace e->pdr.adr with
1945 the start address of the function. */
1946 e
->pdr
.adr
= BLOCK_START (b
);
1948 /* Correct incorrect setjmp procedure descriptor from the library
1949 to make backtrace through setjmp work. */
1950 if (e
->pdr
.pcreg
== 0
1951 && strcmp (sh_name
, "setjmp") == 0)
1953 complaint (&symfile_complaints
, _("fixing bad setjmp PDR from libc"));
1955 e
->pdr
.pcreg
= RA_REGNUM
;
1959 e
->pdr
.regmask
= 0x80000000;
1960 e
->pdr
.regoffset
= -4;
1964 /* It would be reasonable that functions that have been compiled
1965 without debugging info have a btNil type for their return value,
1966 and functions that are void and are compiled with debugging info
1968 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1969 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1971 The glevel field in cur_fdr could be used to determine the presence
1972 of debugging info, but GCC doesn't always pass the -g switch settings
1973 to the assembler and GAS doesn't set the glevel field from the -g switch
1975 To work around these problems, the return value type of a TYPE_CODE_VOID
1976 function is adjusted accordingly if no debugging info was found in the
1977 compilation unit. */
1979 if (processing_gcc_compilation
== 0
1980 && found_ecoff_debugging_info
== 0
1981 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
1982 SYMBOL_TYPE (s
) = builtin_type (current_gdbarch
)->nodebug_text_symbol
;
1985 /* Parse the external symbol ES. Just call parse_symbol() after
1986 making sure we know where the aux are for it.
1987 BIGEND says whether aux entries are big-endian or little-endian.
1989 This routine clobbers top_stack->cur_block and ->cur_st. */
1991 static void parse_external (EXTR
*, int, struct section_offsets
*,
1995 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
1996 struct objfile
*objfile
)
2000 if (es
->ifd
!= ifdNil
)
2003 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2004 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2008 cur_fdr
= debug_info
->fdr
;
2012 /* Reading .o files */
2013 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2016 switch (es
->asym
.st
)
2019 /* These are generated for static symbols in .o files,
2040 /* FIXME: Turn this into a complaint? */
2042 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2043 what
, debug_info
->ssext
+ es
->asym
.iss
,
2044 fdr_name (cur_fdr
));
2048 switch (es
->asym
.st
)
2052 /* There is no need to parse the external procedure symbols.
2053 If they are from objects compiled without -g, their index will
2054 be indexNil, and the symbol definition from the minimal symbol
2055 is preferrable (yielding a function returning int instead of int).
2056 If the index points to a local procedure symbol, the local
2057 symbol already provides the correct type.
2058 Note that the index of the external procedure symbol points
2059 to the local procedure symbol in the local symbol table, and
2060 _not_ to the auxiliary symbol info. */
2064 /* Global common symbols are resolved by the runtime loader,
2066 if (SC_IS_COMMON (es
->asym
.sc
))
2069 /* Note that the case of a symbol with indexNil must be handled
2070 anyways by parse_symbol(). */
2071 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2078 /* Parse the line number info for file descriptor FH into
2079 GDB's linetable LT. MIPS' encoding requires a little bit
2080 of magic to get things out. Note also that MIPS' line
2081 numbers can go back and forth, apparently we can live
2082 with that and do not need to reorder our linetables */
2084 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2085 struct partial_symtab
*, CORE_ADDR
);
2088 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2089 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2091 unsigned char *base
;
2093 int delta
, count
, lineno
= 0;
2095 if (fh
->cbLine
== 0)
2098 /* Scan by procedure descriptors */
2100 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2104 unsigned char *halt
;
2106 /* No code for this one */
2107 if (pr
->iline
== ilineNil
||
2108 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2111 /* Determine start and end address of compressed line bytes for
2113 base
= debug_info
->line
+ fh
->cbLineOffset
;
2114 if (j
!= (fh
->cpd
- 1))
2115 halt
= base
+ pr
[1].cbLineOffset
;
2117 halt
= base
+ fh
->cbLine
;
2118 base
+= pr
->cbLineOffset
;
2120 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2122 l
= adr
>> 2; /* in words */
2123 for (lineno
= pr
->lnLow
; base
< halt
;)
2125 count
= *base
& 0x0f;
2126 delta
= *base
++ >> 4;
2131 delta
= (base
[0] << 8) | base
[1];
2132 if (delta
>= 0x8000)
2136 lineno
+= delta
; /* first delta is 0 */
2138 /* Complain if the line table overflows. Could happen
2139 with corrupt binaries. */
2140 if (lt
->nitems
>= maxlines
)
2142 complaint (&symfile_complaints
,
2143 _("guessed size of linetable for %s incorrectly"),
2147 k
= add_line (lt
, lineno
, l
, k
);
2154 function_outside_compilation_unit_complaint (const char *arg1
)
2156 complaint (&symfile_complaints
,
2157 _("function `%s' appears to be defined outside of all compilation units"),
2161 /* Use the STORAGE_CLASS to compute which section the given symbol
2162 belongs to, and then records this new minimal symbol. */
2165 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2166 enum minimal_symbol_type ms_type
, int storage_class
,
2167 struct objfile
*objfile
)
2170 asection
*bfd_section
;
2172 switch (storage_class
)
2175 section
= SECT_OFF_TEXT (objfile
);
2176 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".text");
2179 section
= SECT_OFF_DATA (objfile
);
2180 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".data");
2183 section
= SECT_OFF_BSS (objfile
);
2184 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".bss");
2187 section
= get_section_index (objfile
, ".sdata");
2188 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sdata");
2191 section
= get_section_index (objfile
, ".sbss");
2192 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sbss");
2195 section
= get_section_index (objfile
, ".rdata");
2196 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rdata");
2199 section
= get_section_index (objfile
, ".init");
2200 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".init");
2203 section
= get_section_index (objfile
, ".xdata");
2204 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".xdata");
2207 section
= get_section_index (objfile
, ".pdata");
2208 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".pdata");
2211 section
= get_section_index (objfile
, ".fini");
2212 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".fini");
2215 section
= get_section_index (objfile
, ".rconst");
2216 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rconst");
2220 section
= get_section_index (objfile
, ".tlsdata");
2221 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsdata");
2226 section
= get_section_index (objfile
, ".tlsbss");
2227 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsbss");
2231 /* This kind of symbol is not associated to a section. */
2236 prim_record_minimal_symbol_and_info (name
, address
, ms_type
, NULL
,
2237 section
, bfd_section
, objfile
);
2240 /* Master parsing procedure for first-pass reading of file symbols
2241 into a partial_symtab. */
2244 parse_partial_symbols (struct objfile
*objfile
)
2246 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2247 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2248 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2249 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2250 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2251 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2253 HDRR
*hdr
= &debug_info
->symbolic_header
;
2254 /* Running pointers */
2262 struct partial_symtab
*pst
;
2263 int textlow_not_set
= 1;
2264 int past_first_source_file
= 0;
2266 /* List of current psymtab's include files */
2267 char **psymtab_include_list
;
2268 int includes_allocated
;
2271 struct pst_map
*fdr_to_pst
;
2272 /* Index within current psymtab dependency list */
2273 struct partial_symtab
**dependency_list
;
2274 int dependencies_used
, dependencies_allocated
;
2275 struct cleanup
*old_chain
;
2277 enum language prev_language
;
2278 asection
*text_sect
;
2279 int relocatable
= 0;
2281 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2282 the shared libraries are prelinked at a high memory address.
2283 We have to adjust the start address of the object file for this case,
2284 by setting it to the start address of the first procedure in the file.
2285 But we should do no adjustments if we are debugging a .o file, where
2286 the text section (and fh->adr) really starts at zero. */
2287 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2288 if (text_sect
!= NULL
2289 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2292 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2293 sizeof (EXTR
) * hdr
->iextMax
);
2295 includes_allocated
= 30;
2297 psymtab_include_list
= (char **) alloca (includes_allocated
*
2299 next_symbol_text_func
= mdebug_next_symbol_text
;
2301 dependencies_allocated
= 30;
2302 dependencies_used
= 0;
2304 (struct partial_symtab
**) alloca (dependencies_allocated
*
2305 sizeof (struct partial_symtab
*));
2307 last_source_file
= NULL
;
2312 * Only parse the Local and External symbols, and the Relative FDR.
2313 * Fixup enough of the loader symtab to be able to use it.
2314 * Allocate space only for the file's portions we need to
2319 max_glevel
= MIN_GLEVEL
;
2321 /* Allocate the map FDR -> PST.
2322 Minor hack: -O3 images might claim some global data belongs
2323 to FDR -1. We`ll go along with that */
2324 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2325 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2328 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2329 fdr_to_pst
[-1].pst
= pst
;
2333 /* Allocate the global pending list. */
2335 ((struct mdebug_pending
**)
2336 obstack_alloc (&objfile
->objfile_obstack
,
2337 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2338 memset (pending_list
, 0,
2339 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2341 /* Pass 0 over external syms: swap them in. */
2342 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2343 make_cleanup (xfree
, ext_block
);
2345 ext_out
= (char *) debug_info
->external_ext
;
2346 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2348 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2349 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2351 /* Pass 1 over external syms: Presize and partition the list */
2353 ext_in_end
= ext_in
+ hdr
->iextMax
;
2354 for (; ext_in
< ext_in_end
; ext_in
++)
2356 /* See calls to complain below. */
2357 if (ext_in
->ifd
>= -1
2358 && ext_in
->ifd
< hdr
->ifdMax
2359 && ext_in
->asym
.iss
>= 0
2360 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2361 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2364 /* Pass 1.5 over files: partition out global symbol space */
2366 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2368 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2369 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2370 fdr_to_pst
[f_idx
].n_globals
= 0;
2375 For ECOFF in ELF, we skip the creation of the minimal symbols.
2376 The ECOFF symbols should be a subset of the Elf symbols, and the
2377 section information of the elf symbols will be more accurate.
2378 FIXME! What about Irix 5's native linker?
2380 By default, Elf sections which don't exist in ECOFF
2381 get put in ECOFF's absolute section by the gnu linker.
2382 Since absolute sections don't get relocated, we
2383 end up calculating an address different from that of
2384 the symbol's minimal symbol (created earlier from the
2387 To fix this, either :
2388 1) don't create the duplicate symbol
2389 (assumes ECOFF symtab is a subset of the ELF symtab;
2390 assumes no side-effects result from ignoring ECOFF symbol)
2391 2) create it, only if lookup for existing symbol in ELF's minimal
2394 assumes no side-effects result from ignoring ECOFF symbol)
2395 3) create it, but lookup ELF's minimal symbol and use it's section
2396 during relocation, then modify "uniqify" phase to merge and
2397 eliminate the duplicate symbol
2398 (highly inefficient)
2400 I've implemented #1 here...
2401 Skip the creation of the minimal symbols based on the ECOFF
2404 /* Pass 2 over external syms: fill in external symbols */
2406 ext_in_end
= ext_in
+ hdr
->iextMax
;
2407 for (; ext_in
< ext_in_end
; ext_in
++)
2409 enum minimal_symbol_type ms_type
= mst_text
;
2410 CORE_ADDR svalue
= ext_in
->asym
.value
;
2412 /* The Irix 5 native tools seem to sometimes generate bogus
2413 external symbols. */
2414 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2416 complaint (&symfile_complaints
,
2417 _("bad ifd for external symbol: %d (max %ld)"), ext_in
->ifd
,
2421 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2423 complaint (&symfile_complaints
,
2424 _("bad iss for external symbol: %ld (max %ld)"),
2425 ext_in
->asym
.iss
, hdr
->issExtMax
);
2429 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2430 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2433 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2437 /* Pass 3 over files, over local syms: fill in static symbols */
2438 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2440 /* Process ECOFF Symbol Types and Storage Classes */
2441 switch (ext_in
->asym
.st
)
2444 /* Beginnning of Procedure */
2445 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2448 /* Load time only static procs */
2449 ms_type
= mst_file_text
;
2450 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2453 /* External symbol */
2454 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2456 /* The value of a common symbol is its size, not its address.
2460 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2463 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2465 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2468 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2470 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2473 svalue
+= ANOFFSET (objfile
->section_offsets
,
2474 get_section_index (objfile
, ".sbss"));
2482 /* On certain platforms, some extra label symbols can be
2483 generated by the linker. One possible usage for this kind
2484 of symbols is to represent the address of the begining of a
2485 given section. For instance, on Tru64 5.1, the address of
2486 the _ftext label is the start address of the .text section.
2488 The storage class of these symbols is usually directly
2489 related to the section to which the symbol refers. For
2490 instance, on Tru64 5.1, the storage class for the _fdata
2491 label is scData, refering to the .data section.
2493 It is actually possible that the section associated to the
2494 storage class of the label does not exist. On True64 5.1
2495 for instance, the libm.so shared library does not contain
2496 any .data section, although it contains a _fpdata label
2497 which storage class is scData... Since these symbols are
2498 usually useless for the debugger user anyway, we just
2499 discard these symbols.
2502 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2504 if (objfile
->sect_index_text
== -1)
2507 ms_type
= mst_file_text
;
2508 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2510 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2512 if (objfile
->sect_index_data
== -1)
2515 ms_type
= mst_file_data
;
2516 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2518 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2520 if (objfile
->sect_index_bss
== -1)
2523 ms_type
= mst_file_bss
;
2524 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2526 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2528 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2530 if (sbss_sect_index
== -1)
2533 ms_type
= mst_file_bss
;
2534 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2541 /* The alpha has the section start addresses in stLocal symbols
2542 whose name starts with a `.'. Skip those but complain for all
2543 other stLocal symbols.
2544 Irix6 puts the section start addresses in stNil symbols, skip
2550 ms_type
= mst_unknown
;
2551 unknown_ext_complaint (name
);
2553 if (!ECOFF_IN_ELF (cur_bfd
))
2554 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2558 /* Pass 3 over files, over local syms: fill in static symbols */
2559 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2561 struct partial_symtab
*save_pst
;
2565 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2569 fdr_to_pst
[f_idx
].pst
= NULL
;
2573 /* Determine the start address for this object file from the
2574 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2578 if (relocatable
|| textlow
!= 0)
2579 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2583 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2586 objfile
->global_psymbols
.next
,
2587 objfile
->static_psymbols
.next
);
2588 pst
->read_symtab_private
= ((char *)
2589 obstack_alloc (&objfile
->objfile_obstack
,
2590 sizeof (struct symloc
)));
2591 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2594 FDR_IDX (pst
) = f_idx
;
2595 CUR_BFD (pst
) = cur_bfd
;
2596 DEBUG_SWAP (pst
) = debug_swap
;
2597 DEBUG_INFO (pst
) = debug_info
;
2598 PENDING_LIST (pst
) = pending_list
;
2600 /* The way to turn this into a symtab is to call... */
2601 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2603 /* Set up language for the pst.
2604 The language from the FDR is used if it is unambigious (e.g. cfront
2605 with native cc and g++ will set the language to C).
2606 Otherwise we have to deduce the language from the filename.
2607 Native ecoff has every header file in a separate FDR, so
2608 deduce_language_from_filename will return language_unknown for
2609 a header file, which is not what we want.
2610 But the FDRs for the header files are after the FDR for the source
2611 file, so we can assign the language of the source file to the
2612 following header files. Then we save the language in the private
2613 pst data so that we can reuse it when building symtabs. */
2614 prev_language
= psymtab_language
;
2618 case langCplusplusV2
:
2619 psymtab_language
= language_cplus
;
2622 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2625 if (psymtab_language
== language_unknown
)
2626 psymtab_language
= prev_language
;
2627 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2629 pst
->texthigh
= pst
->textlow
;
2631 /* For stabs-in-ecoff files, the second symbol must be @stab.
2632 This symbol is emitted by mips-tfile to signal that the
2633 current object file uses encapsulated stabs instead of mips
2634 ecoff for local symbols. (It is the second symbol because
2635 the first symbol is the stFile used to signal the start of a
2637 processing_gcc_compilation
= 0;
2640 (*swap_sym_in
) (cur_bfd
,
2641 ((char *) debug_info
->external_sym
2642 + (fh
->isymBase
+ 1) * external_sym_size
),
2644 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2646 processing_gcc_compilation
= 2;
2649 if (processing_gcc_compilation
!= 0)
2651 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2656 (*swap_sym_in
) (cur_bfd
,
2657 (((char *) debug_info
->external_sym
)
2658 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2660 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2661 if (!ECOFF_IS_STAB (&sh
))
2663 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2668 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2669 if (sh
.st
== stStaticProc
)
2671 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2672 record_minimal_symbol (namestring
, sh
.value
,
2673 mst_file_text
, sh
.sc
,
2676 procaddr
= sh
.value
;
2678 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2679 (debug_info
->external_aux
2682 (*swap_sym_in
) (cur_bfd
,
2683 ((char *) debug_info
->external_sym
2684 + ((fh
->isymBase
+ isym
- 1)
2685 * external_sym_size
)),
2689 CORE_ADDR high
= procaddr
+ sh
.value
;
2691 /* Kludge for Irix 5.2 zero fh->adr. */
2693 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2694 pst
->textlow
= procaddr
;
2695 if (high
> pst
->texthigh
)
2696 pst
->texthigh
= high
;
2699 else if (sh
.st
== stStatic
)
2714 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2715 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2716 record_minimal_symbol (namestring
, sh
.value
,
2717 mst_file_data
, sh
.sc
,
2722 /* FIXME! Shouldn't this use cases for bss,
2723 then have the default be abs? */
2724 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2725 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2726 record_minimal_symbol (namestring
, sh
.value
,
2727 mst_file_bss
, sh
.sc
,
2734 /* Handle stabs continuation */
2736 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2737 int len
= strlen (stabstring
);
2738 while (stabstring
[len
- 1] == '\\')
2741 char *stabstring1
= stabstring
;
2745 /* Ignore continuation char from 1st string */
2748 /* Read next stabstring */
2750 (*swap_sym_in
) (cur_bfd
,
2751 (((char *) debug_info
->external_sym
)
2752 + (fh
->isymBase
+ cur_sdx
)
2753 * external_sym_size
),
2755 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2756 len2
= strlen (stabstring2
);
2758 /* Concatinate stabstring2 with stabstring1 */
2760 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2761 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2764 stabstring
= xmalloc (len
+ len2
+ 1);
2765 strcpy (stabstring
, stabstring1
);
2767 strcpy (stabstring
+ len
, stabstring2
);
2775 * Standard, external, non-debugger, symbols
2778 case N_TEXT
| N_EXT
:
2779 case N_NBTEXT
| N_EXT
:
2780 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2783 case N_DATA
| N_EXT
:
2784 case N_NBDATA
| N_EXT
:
2785 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2790 case N_NBBSS
| N_EXT
:
2791 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2792 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2799 /* Standard, local, non-debugger, symbols */
2803 /* We need to be able to deal with both N_FN or N_TEXT,
2804 because we have no way of knowing whether the sys-supplied ld
2805 or GNU ld was used to make the executable. Sequents throw
2806 in another wrinkle -- they renumbered N_FN. */
2814 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2817 case N_UNDF
| N_EXT
:
2818 continue; /* Just undefined, not COMMON */
2823 /* Lots of symbol types we can just ignore. */
2830 /* Keep going . . . */
2833 * Special symbol types for GNU
2836 case N_INDR
| N_EXT
:
2838 case N_SETA
| N_EXT
:
2840 case N_SETT
| N_EXT
:
2842 case N_SETD
| N_EXT
:
2844 case N_SETB
| N_EXT
:
2855 static int prev_so_symnum
= -10;
2856 static int first_so_symnum
;
2858 int prev_textlow_not_set
;
2860 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2862 prev_textlow_not_set
= textlow_not_set
;
2864 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2865 /* A zero value is probably an indication for the SunPRO 3.0
2866 compiler. end_psymtab explicitly tests for zero, so
2867 don't relocate it. */
2871 textlow_not_set
= 1;
2875 textlow_not_set
= 0;
2877 textlow_not_set
= 0;
2879 past_first_source_file
= 1;
2881 if (prev_so_symnum
!= symnum
- 1)
2882 { /* Here if prev stab wasn't N_SO */
2883 first_so_symnum
= symnum
;
2887 pst
= (struct partial_symtab
*) 0;
2889 dependencies_used
= 0;
2893 prev_so_symnum
= symnum
;
2895 /* End the current partial symtab and start a new one */
2897 /* SET_NAMESTRING ();*/
2898 namestring
= stabstring
;
2900 /* Null name means end of .o file. Don't start a new one. */
2901 if (*namestring
== '\000')
2904 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2905 The first one is a directory name; the second the file name.
2906 If pst exists, is empty, and has a filename ending in '/',
2907 we assume the previous N_SO was a directory name. */
2909 p
= strrchr (namestring
, '/');
2910 if (p
&& *(p
+ 1) == '\000')
2911 continue; /* Simply ignore directory name SOs */
2913 /* Some other compilers (C++ ones in particular) emit useless
2914 SOs for non-existant .c files. We ignore all subsequent SOs that
2915 immediately follow the first. */
2927 enum language tmp_language
;
2928 /* Mark down an include file in the current psymtab */
2930 /* SET_NAMESTRING ();*/
2931 namestring
= stabstring
;
2933 tmp_language
= deduce_language_from_filename (namestring
);
2935 /* Only change the psymtab's language if we've learned
2936 something useful (eg. tmp_language is not language_unknown).
2937 In addition, to match what start_subfile does, never change
2939 if (tmp_language
!= language_unknown
2940 && (tmp_language
!= language_c
2941 || psymtab_language
!= language_cplus
))
2942 psymtab_language
= tmp_language
;
2944 /* In C++, one may expect the same filename to come round many
2945 times, when code is coming alternately from the main file
2946 and from inline functions in other files. So I check to see
2947 if this is a file we've seen before -- either the main
2948 source file, or a previously included file.
2950 This seems to be a lot of time to be spending on N_SOL, but
2951 things like "break c-exp.y:435" need to work (I
2952 suppose the psymtab_include_list could be hashed or put
2953 in a binary tree, if profiling shows this is a major hog). */
2954 if (pst
&& strcmp (namestring
, pst
->filename
) == 0)
2958 for (i
= 0; i
< includes_used
; i
++)
2959 if (strcmp (namestring
,
2960 psymtab_include_list
[i
]) == 0)
2969 psymtab_include_list
[includes_used
++] = namestring
;
2970 if (includes_used
>= includes_allocated
)
2972 char **orig
= psymtab_include_list
;
2974 psymtab_include_list
= (char **)
2975 alloca ((includes_allocated
*= 2) *
2977 memcpy (psymtab_include_list
, orig
,
2978 includes_used
* sizeof (char *));
2982 case N_LSYM
: /* Typedef or automatic variable. */
2983 case N_STSYM
: /* Data seg var -- static */
2984 case N_LCSYM
: /* BSS " */
2985 case N_ROSYM
: /* Read-only data seg var -- static. */
2986 case N_NBSTS
: /* Gould nobase. */
2987 case N_NBLCS
: /* symbols. */
2989 case N_GSYM
: /* Global (extern) variable; can be
2990 data or bss (sigh FIXME). */
2992 /* Following may probably be ignored; I'll leave them here
2993 for now (until I do Pascal and Modula 2 extensions). */
2995 case N_PC
: /* I may or may not need this; I
2997 case N_M2C
: /* I suspect that I can ignore this here. */
2998 case N_SCOPE
: /* Same. */
3000 /* SET_NAMESTRING ();*/
3001 namestring
= stabstring
;
3002 p
= (char *) strchr (namestring
, ':');
3004 continue; /* Not a debugging symbol. */
3008 /* Main processing section for debugging symbols which
3009 the initial read through the symbol tables needs to worry
3010 about. If we reach this point, the symbol which we are
3011 considering is definitely one we are interested in.
3012 p must also contain the (valid) index into the namestring
3013 which indicates the debugging type symbol. */
3018 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3019 #ifdef STATIC_TRANSFORM_NAME
3020 namestring
= STATIC_TRANSFORM_NAME (namestring
);
3022 add_psymbol_to_list (namestring
, p
- namestring
,
3023 VAR_DOMAIN
, LOC_STATIC
,
3024 &objfile
->static_psymbols
,
3026 psymtab_language
, objfile
);
3029 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3030 /* The addresses in these entries are reported to be
3031 wrong. See the code that reads 'G's for symtabs. */
3032 add_psymbol_to_list (namestring
, p
- namestring
,
3033 VAR_DOMAIN
, LOC_STATIC
,
3034 &objfile
->global_psymbols
,
3036 psymtab_language
, objfile
);
3040 /* When a 'T' entry is defining an anonymous enum, it
3041 may have a name which is the empty string, or a
3042 single space. Since they're not really defining a
3043 symbol, those shouldn't go in the partial symbol
3044 table. We do pick up the elements of such enums at
3045 'check_enum:', below. */
3046 if (p
>= namestring
+ 2
3047 || (p
== namestring
+ 1
3048 && namestring
[0] != ' '))
3050 add_psymbol_to_list (namestring
, p
- namestring
,
3051 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3052 &objfile
->static_psymbols
,
3054 psymtab_language
, objfile
);
3057 /* Also a typedef with the same name. */
3058 add_psymbol_to_list (namestring
, p
- namestring
,
3059 VAR_DOMAIN
, LOC_TYPEDEF
,
3060 &objfile
->static_psymbols
,
3062 psymtab_language
, objfile
);
3068 if (p
!= namestring
) /* a name is there, not just :T... */
3070 add_psymbol_to_list (namestring
, p
- namestring
,
3071 VAR_DOMAIN
, LOC_TYPEDEF
,
3072 &objfile
->static_psymbols
,
3074 psymtab_language
, objfile
);
3077 /* If this is an enumerated type, we need to
3078 add all the enum constants to the partial symbol
3079 table. This does not cover enums without names, e.g.
3080 "enum {a, b} c;" in C, but fortunately those are
3081 rare. There is no way for GDB to find those from the
3082 enum type without spending too much time on it. Thus
3083 to solve this problem, the compiler needs to put out the
3084 enum in a nameless type. GCC2 does this. */
3086 /* We are looking for something of the form
3087 <name> ":" ("t" | "T") [<number> "="] "e"
3088 {<constant> ":" <value> ","} ";". */
3090 /* Skip over the colon and the 't' or 'T'. */
3092 /* This type may be given a number. Also, numbers can come
3093 in pairs like (0,26). Skip over it. */
3094 while ((*p
>= '0' && *p
<= '9')
3095 || *p
== '(' || *p
== ',' || *p
== ')'
3101 /* The aix4 compiler emits extra crud before the members. */
3104 /* Skip over the type (?). */
3108 /* Skip over the colon. */
3112 /* We have found an enumerated type. */
3113 /* According to comments in read_enum_type
3114 a comma could end it instead of a semicolon.
3115 I don't know where that happens.
3117 while (*p
&& *p
!= ';' && *p
!= ',')
3121 /* Check for and handle cretinous dbx symbol name
3123 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3124 p
= next_symbol_text (objfile
);
3126 /* Point to the character after the name
3127 of the enum constant. */
3128 for (q
= p
; *q
&& *q
!= ':'; q
++)
3130 /* Note that the value doesn't matter for
3131 enum constants in psymtabs, just in symtabs. */
3132 add_psymbol_to_list (p
, q
- p
,
3133 VAR_DOMAIN
, LOC_CONST
,
3134 &objfile
->static_psymbols
, 0,
3135 0, psymtab_language
, objfile
);
3136 /* Point past the name. */
3138 /* Skip over the value. */
3139 while (*p
&& *p
!= ',')
3141 /* Advance past the comma. */
3148 /* Constant, e.g. from "const" in Pascal. */
3149 add_psymbol_to_list (namestring
, p
- namestring
,
3150 VAR_DOMAIN
, LOC_CONST
,
3151 &objfile
->static_psymbols
, sh
.value
,
3152 0, psymtab_language
, objfile
);
3158 int name_len
= p
- namestring
;
3159 char *name
= xmalloc (name_len
+ 1);
3160 memcpy (name
, namestring
, name_len
);
3161 name
[name_len
] = '\0';
3162 function_outside_compilation_unit_complaint (name
);
3165 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3166 add_psymbol_to_list (namestring
, p
- namestring
,
3167 VAR_DOMAIN
, LOC_BLOCK
,
3168 &objfile
->static_psymbols
,
3170 psymtab_language
, objfile
);
3173 /* Global functions were ignored here, but now they
3174 are put into the global psymtab like one would expect.
3175 They're also in the minimal symbol table. */
3179 int name_len
= p
- namestring
;
3180 char *name
= xmalloc (name_len
+ 1);
3181 memcpy (name
, namestring
, name_len
);
3182 name
[name_len
] = '\0';
3183 function_outside_compilation_unit_complaint (name
);
3186 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3187 add_psymbol_to_list (namestring
, p
- namestring
,
3188 VAR_DOMAIN
, LOC_BLOCK
,
3189 &objfile
->global_psymbols
,
3191 psymtab_language
, objfile
);
3194 /* Two things show up here (hopefully); static symbols of
3195 local scope (static used inside braces) or extensions
3196 of structure symbols. We can ignore both. */
3210 case '#': /* for symbol identification (used in live ranges) */
3214 /* It is a C++ nested symbol. We don't need to record it
3215 (I don't think); if we try to look up foo::bar::baz,
3216 then symbols for the symtab containing foo should get
3217 read in, I think. */
3218 /* Someone says sun cc puts out symbols like
3219 /foo/baz/maclib::/usr/local/bin/maclib,
3220 which would get here with a symbol type of ':'. */
3224 /* Unexpected symbol descriptor. The second and subsequent stabs
3225 of a continued stab can show up here. The question is
3226 whether they ever can mimic a normal stab--it would be
3227 nice if not, since we certainly don't want to spend the
3228 time searching to the end of every string looking for
3231 complaint (&symfile_complaints
,
3232 _("unknown symbol descriptor `%c'"), p
[1]);
3234 /* Ignore it; perhaps it is an extension that we don't
3243 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3244 /* Solaris 2 end of module, finish current partial
3245 symbol table. END_PSYMTAB will set
3246 pst->texthigh to the proper value, which is
3247 necessary if a module compiled without
3248 debugging info follows this module. */
3251 pst
= (struct partial_symtab
*) 0;
3253 dependencies_used
= 0;
3259 if (sh
.value
> save_pst
->texthigh
)
3260 save_pst
->texthigh
= sh
.value
;
3265 case N_SSYM
: /* Claim: Structure or union element.
3266 Hopefully, I can ignore this. */
3267 case N_ENTRY
: /* Alternate entry point; can ignore. */
3268 case N_MAIN
: /* Can definitely ignore this. */
3269 case N_CATCH
: /* These are GNU C++ extensions */
3270 case N_EHDECL
: /* that can safely be ignored here. */
3280 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3281 case N_DEFD
: /* GNU Modula-2 */
3282 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3284 case N_OBJ
: /* useless types from Solaris */
3286 /* These symbols aren't interesting; don't worry about them */
3291 /* If we haven't found it yet, ignore it. It's probably some
3292 new type we don't know about yet. */
3293 complaint (&symfile_complaints
, _("unknown symbol type %s"),
3294 hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3298 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3301 /* end - Handle continuation */
3306 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3309 enum address_class
class;
3311 (*swap_sym_in
) (cur_bfd
,
3312 ((char *) debug_info
->external_sym
3313 + ((fh
->isymBase
+ cur_sdx
)
3314 * external_sym_size
)),
3317 if (ECOFF_IS_STAB (&sh
))
3323 /* Non absolute static symbols go into the minimal table. */
3324 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3325 || (sh
.index
== indexNil
3326 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3328 /* FIXME, premature? */
3333 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3339 /* The value of a stEnd symbol is the displacement from the
3340 corresponding start symbol value, do not relocate it. */
3342 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3349 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3353 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3364 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3365 mst_file_text
, NULL
,
3366 SECT_OFF_TEXT (objfile
), NULL
,
3372 /* Ignore all parameter symbol records. */
3373 if (sh
.index
>= hdr
->iauxMax
)
3375 /* Should not happen, but does when cross-compiling
3376 with the MIPS compiler. FIXME -- pull later. */
3377 index_complaint (name
);
3378 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3381 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3382 (debug_info
->external_aux
3386 if (new_sdx
<= cur_sdx
)
3388 /* This should not happen either... FIXME. */
3389 complaint (&symfile_complaints
,
3390 _("bad proc end in aux found from symbol %s"),
3392 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3395 /* For stProc symbol records, we need to check the
3396 storage class as well, as only (stProc, scText)
3397 entries represent "real" procedures - See the
3398 Compaq document titled "Object File / Symbol Table
3399 Format Specification" for more information. If the
3400 storage class is not scText, we discard the whole
3401 block of symbol records for this stProc. */
3402 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3405 /* Usually there is a local and a global stProc symbol
3406 for a function. This means that the function name
3407 has already been entered into the mimimal symbol table
3408 while processing the global symbols in pass 2 above.
3409 One notable exception is the PROGRAM name from
3410 f77 compiled executables, it is only put out as
3411 local stProc symbol, and a global MAIN__ stProc symbol
3412 points to it. It doesn't matter though, as gdb is
3413 still able to find the PROGRAM name via the partial
3414 symbol table, and the MAIN__ symbol via the minimal
3416 if (sh
.st
== stProc
)
3417 add_psymbol_to_list (name
, strlen (name
),
3418 VAR_DOMAIN
, LOC_BLOCK
,
3419 &objfile
->global_psymbols
,
3420 0, sh
.value
, psymtab_language
, objfile
);
3422 add_psymbol_to_list (name
, strlen (name
),
3423 VAR_DOMAIN
, LOC_BLOCK
,
3424 &objfile
->static_psymbols
,
3425 0, sh
.value
, psymtab_language
, objfile
);
3427 procaddr
= sh
.value
;
3430 (*swap_sym_in
) (cur_bfd
,
3431 ((char *) debug_info
->external_sym
3432 + ((fh
->isymBase
+ cur_sdx
- 1)
3433 * external_sym_size
)),
3438 /* Kludge for Irix 5.2 zero fh->adr. */
3440 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3441 pst
->textlow
= procaddr
;
3443 high
= procaddr
+ sh
.value
;
3444 if (high
> pst
->texthigh
)
3445 pst
->texthigh
= high
;
3448 case stStatic
: /* Variable */
3449 if (SC_IS_DATA (sh
.sc
))
3450 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3451 mst_file_data
, NULL
,
3452 SECT_OFF_DATA (objfile
),
3456 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3458 SECT_OFF_BSS (objfile
),
3464 case stIndirect
: /* Irix5 forward declaration */
3465 /* Skip forward declarations from Irix5 cc */
3468 case stTypedef
: /* Typedef */
3469 /* Skip typedefs for forward declarations and opaque
3470 structs from alpha and mips cc. */
3471 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3473 class = LOC_TYPEDEF
;
3476 case stConstant
: /* Constant decl */
3483 case stBlock
: /* { }, str, un, enum */
3484 /* Do not create a partial symbol for cc unnamed aggregates
3485 and gcc empty aggregates. */
3486 if ((sh
.sc
== scInfo
3487 || SC_IS_COMMON (sh
.sc
))
3489 && sh
.index
!= cur_sdx
+ 2)
3491 add_psymbol_to_list (name
, strlen (name
),
3492 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3493 &objfile
->static_psymbols
,
3495 psymtab_language
, objfile
);
3497 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3499 /* Skip over the block */
3501 if (new_sdx
<= cur_sdx
)
3503 /* This happens with the Ultrix kernel. */
3504 complaint (&symfile_complaints
,
3505 _("bad aux index at block symbol %s"), name
);
3506 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3511 case stFile
: /* File headers */
3512 case stLabel
: /* Labels */
3513 case stEnd
: /* Ends of files */
3516 case stLocal
: /* Local variables */
3517 /* Normally these are skipped because we skip over
3518 all blocks we see. However, these can occur
3519 as visible symbols in a .h file that contains code. */
3523 /* Both complaints are valid: one gives symbol name,
3524 the other the offending symbol type. */
3525 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3527 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3531 /* Use this gdb symbol */
3532 add_psymbol_to_list (name
, strlen (name
),
3534 &objfile
->static_psymbols
,
3535 0, sh
.value
, psymtab_language
, objfile
);
3537 cur_sdx
++; /* Go to next file symbol */
3540 /* Now do enter the external symbols. */
3541 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3542 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3543 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3544 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3545 for (; --cur_sdx
>= 0; ext_ptr
++)
3547 enum address_class
class;
3552 if (ext_ptr
->ifd
!= f_idx
)
3553 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
3554 psh
= &ext_ptr
->asym
;
3556 /* Do not add undefined symbols to the partial symbol table. */
3557 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3560 svalue
= psh
->value
;
3565 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3572 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3576 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3583 /* These are generated for static symbols in .o files,
3588 /* External procedure symbols have been entered
3589 into the minimal symbol table in pass 2 above.
3590 Ignore them, as parse_external will ignore them too. */
3596 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3597 /* Fall through, pretend it's global. */
3599 /* Global common symbols are resolved by the runtime loader,
3601 if (SC_IS_COMMON (psh
->sc
))
3607 name
= debug_info
->ssext
+ psh
->iss
;
3608 add_psymbol_to_list (name
, strlen (name
),
3610 &objfile
->global_psymbols
,
3612 psymtab_language
, objfile
);
3616 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3617 empty and put on the free list. */
3618 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3619 psymtab_include_list
, includes_used
,
3620 -1, save_pst
->texthigh
,
3621 dependency_list
, dependencies_used
, textlow_not_set
);
3623 dependencies_used
= 0;
3625 /* The objfile has its functions reordered if this partial symbol
3626 table overlaps any other partial symbol table.
3627 We cannot assume a reordered objfile if a partial symbol table
3628 is contained within another partial symbol table, as partial symbol
3629 tables for include files with executable code are contained
3630 within the partial symbol table for the including source file,
3631 and we do not want to flag the objfile reordered for these cases.
3633 This strategy works well for Irix-5.2 shared libraries, but we
3634 might have to use a more elaborate (and slower) algorithm for
3636 save_pst
= fdr_to_pst
[f_idx
].pst
;
3637 if (save_pst
!= NULL
3638 && save_pst
->textlow
!= 0
3639 && !(objfile
->flags
& OBJF_REORDERED
))
3641 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3644 && save_pst
->textlow
>= pst
->textlow
3645 && save_pst
->textlow
< pst
->texthigh
3646 && save_pst
->texthigh
> pst
->texthigh
)
3648 objfile
->flags
|= OBJF_REORDERED
;
3655 /* Now scan the FDRs for dependencies */
3656 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3658 fh
= f_idx
+ debug_info
->fdr
;
3659 pst
= fdr_to_pst
[f_idx
].pst
;
3661 if (pst
== (struct partial_symtab
*) NULL
)
3664 /* This should catch stabs-in-ecoff. */
3668 /* Skip the first file indirect entry as it is a self dependency
3669 for source files or a reverse .h -> .c dependency for header files. */
3670 pst
->number_of_dependencies
= 0;
3672 ((struct partial_symtab
**)
3673 obstack_alloc (&objfile
->objfile_obstack
,
3675 * sizeof (struct partial_symtab
*))));
3676 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3680 (*swap_rfd_in
) (cur_bfd
,
3681 ((char *) debug_info
->external_rfd
3682 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3684 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3686 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3690 /* Skip self dependencies of header files. */
3694 /* Do not add to dependeny list if psymtab was empty. */
3695 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3697 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3701 /* Remove the dummy psymtab created for -O3 images above, if it is
3702 still empty, to enable the detection of stripped executables. */
3703 if (objfile
->psymtabs
->next
== NULL
3704 && objfile
->psymtabs
->number_of_dependencies
== 0
3705 && objfile
->psymtabs
->n_global_syms
== 0
3706 && objfile
->psymtabs
->n_static_syms
== 0)
3707 objfile
->psymtabs
= NULL
;
3708 do_cleanups (old_chain
);
3711 /* If the current psymbol has an enumerated type, we need to add
3712 all the the enum constants to the partial symbol table. */
3715 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3718 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3719 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3720 char *ext_sym
= ((char *) debug_info
->external_sym
3721 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3731 /* It is an enumerated type if the next symbol entry is a stMember
3732 and its auxiliary index is indexNil or its auxiliary entry
3733 is a plain btNil or btVoid.
3734 Alpha cc -migrate enums are recognized by a zero index and
3735 a zero symbol value.
3736 DU 4.0 cc enums are recognized by a member type of btEnum without
3737 qualifiers and a zero symbol value. */
3738 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3739 if (sh
.st
!= stMember
)
3742 if (sh
.index
== indexNil
3743 || (sh
.index
== 0 && svalue
== 0))
3745 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3746 &(debug_info
->external_aux
3747 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3749 if ((tir
.bt
!= btNil
3751 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3752 || tir
.tq0
!= tqNil
)
3764 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3765 if (sh
.st
!= stMember
)
3767 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3769 /* Note that the value doesn't matter for enum constants
3770 in psymtabs, just in symtabs. */
3771 add_psymbol_to_list (name
, strlen (name
),
3772 VAR_DOMAIN
, LOC_CONST
,
3773 &objfile
->static_psymbols
, 0,
3774 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3775 ext_sym
+= external_sym_size
;
3779 /* Get the next symbol. OBJFILE is unused. */
3782 mdebug_next_symbol_text (struct objfile
*objfile
)
3787 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3788 ((char *) debug_info
->external_sym
3789 + ((cur_fdr
->isymBase
+ cur_sdx
)
3790 * debug_swap
->external_sym_size
)),
3792 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3795 /* Ancillary function to psymtab_to_symtab(). Does all the work
3796 for turning the partial symtab PST into a symtab, recurring
3797 first on all dependent psymtabs. The argument FILENAME is
3798 only passed so we can see in debug stack traces what file
3801 This function has a split personality, based on whether the
3802 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3803 The flow of control and even the memory allocation differs. FIXME. */
3806 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3808 bfd_size_type external_sym_size
;
3809 bfd_size_type external_pdr_size
;
3810 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3811 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3813 struct symtab
*st
= NULL
;
3815 struct linetable
*lines
;
3816 CORE_ADDR lowest_pdr_addr
= 0;
3817 int last_symtab_ended
= 0;
3823 /* Read in all partial symbtabs on which this one is dependent.
3824 NOTE that we do have circular dependencies, sigh. We solved
3825 that by setting pst->readin before this point. */
3827 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3828 if (!pst
->dependencies
[i
]->readin
)
3830 /* Inform about additional files to be read in. */
3833 fputs_filtered (" ", gdb_stdout
);
3835 fputs_filtered ("and ", gdb_stdout
);
3837 printf_filtered ("%s...",
3838 pst
->dependencies
[i
]->filename
);
3839 wrap_here (""); /* Flush output */
3840 gdb_flush (gdb_stdout
);
3842 /* We only pass the filename for debug purposes */
3843 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3844 pst
->dependencies
[i
]->filename
);
3847 /* Do nothing if this is a dummy psymtab. */
3849 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3850 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3853 /* Now read the symbols for this symtab */
3855 cur_bfd
= CUR_BFD (pst
);
3856 debug_swap
= DEBUG_SWAP (pst
);
3857 debug_info
= DEBUG_INFO (pst
);
3858 pending_list
= PENDING_LIST (pst
);
3859 external_sym_size
= debug_swap
->external_sym_size
;
3860 external_pdr_size
= debug_swap
->external_pdr_size
;
3861 swap_sym_in
= debug_swap
->swap_sym_in
;
3862 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3863 current_objfile
= pst
->objfile
;
3864 cur_fd
= FDR_IDX (pst
);
3865 fh
= ((cur_fd
== -1)
3867 : debug_info
->fdr
+ cur_fd
);
3870 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3871 processing_gcc_compilation
= 0;
3872 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3876 (*swap_sym_in
) (cur_bfd
,
3877 ((char *) debug_info
->external_sym
3878 + (fh
->isymBase
+ 1) * external_sym_size
),
3880 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3883 /* We indicate that this is a GCC compilation so that certain
3884 features will be enabled in stabsread/dbxread. */
3885 processing_gcc_compilation
= 2;
3889 if (processing_gcc_compilation
!= 0)
3892 /* This symbol table contains stabs-in-ecoff entries. */
3894 /* Parse local symbols first */
3896 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3898 current_objfile
= NULL
;
3901 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3907 (*swap_sym_in
) (cur_bfd
,
3908 (((char *) debug_info
->external_sym
)
3909 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3911 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3913 /* XXX This is a hack. It will go away! */
3914 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3916 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3918 /* We should never get non N_STAB symbols here, but they
3919 should be harmless, so keep process_one_symbol from
3920 complaining about them. */
3921 if (type_code
& N_STAB
)
3923 /* If we found a trailing N_SO with no name, process
3924 it here instead of in process_one_symbol, so we
3925 can keep a handle to its symtab. The symtab
3926 would otherwise be ended twice, once in
3927 process_one_symbol, and once after this loop. */
3928 if (type_code
== N_SO
3930 && previous_stab_code
!= (unsigned char) N_SO
3933 valu
+= ANOFFSET (pst
->section_offsets
,
3934 SECT_OFF_TEXT (pst
->objfile
));
3935 previous_stab_code
= N_SO
;
3936 st
= end_symtab (valu
, pst
->objfile
,
3937 SECT_OFF_TEXT (pst
->objfile
));
3939 last_symtab_ended
= 1;
3943 last_symtab_ended
= 0;
3944 process_one_symbol (type_code
, 0, valu
, name
,
3945 pst
->section_offsets
, pst
->objfile
);
3948 /* Similarly a hack. */
3949 else if (name
[0] == '#')
3951 process_one_symbol (N_SLINE
, 0, valu
, name
,
3952 pst
->section_offsets
, pst
->objfile
);
3954 if (type_code
== N_FUN
)
3956 /* Make up special symbol to contain
3957 procedure specific info */
3958 struct mdebug_extra_func_info
*e
=
3959 ((struct mdebug_extra_func_info
*)
3960 obstack_alloc (¤t_objfile
->objfile_obstack
,
3961 sizeof (struct mdebug_extra_func_info
)));
3962 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
3964 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
3965 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
3966 SYMBOL_CLASS (s
) = LOC_CONST
;
3967 SYMBOL_TYPE (s
) = mdebug_type_void
;
3968 SYMBOL_VALUE (s
) = (long) e
;
3969 e
->pdr
.framereg
= -1;
3970 add_symbol_to_list (s
, &local_symbols
);
3973 else if (sh
.st
== stLabel
)
3975 if (sh
.index
== indexNil
)
3977 /* This is what the gcc2_compiled and __gnu_compiled_*
3978 show up as. So don't complain. */
3983 /* Handle encoded stab line number. */
3984 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3985 record_line (current_subfile
, sh
.index
, valu
);
3988 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3989 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3990 /* These are generated by gcc-2.x, do not complain */
3993 complaint (&symfile_complaints
, _("unknown stabs symbol %s"), name
);
3996 if (! last_symtab_ended
)
3998 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
4002 /* There used to be a call to sort_blocks here, but this should not
4003 be necessary for stabs symtabs. And as sort_blocks modifies the
4004 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4005 it did the wrong thing if the first procedure in a file was
4006 generated via asm statements. */
4008 /* Fill in procedure info next. */
4012 struct cleanup
*old_chain
;
4018 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4019 old_chain
= make_cleanup (xfree
, pr_block
);
4021 pdr_ptr
= ((char *) debug_info
->external_pdr
4022 + fh
->ipdFirst
* external_pdr_size
);
4023 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4027 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4029 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4031 /* Determine lowest PDR address, the PDRs are not always
4033 if (pdr_in
== pr_block
)
4034 lowest_pdr_addr
= pdr_in
->adr
;
4035 else if (pdr_in
->adr
< lowest_pdr_addr
)
4036 lowest_pdr_addr
= pdr_in
->adr
;
4040 pdr_in_end
= pdr_in
+ fh
->cpd
;
4041 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4042 parse_procedure (pdr_in
, st
, pst
);
4044 do_cleanups (old_chain
);
4049 /* This symbol table contains ordinary ecoff entries. */
4058 st
= new_symtab ("unknown", 0, pst
->objfile
);
4062 maxlines
= 2 * fh
->cline
;
4063 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4065 /* The proper language was already determined when building
4066 the psymtab, use it. */
4067 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4070 psymtab_language
= st
->language
;
4072 lines
= LINETABLE (st
);
4074 /* Get a new lexical context */
4076 push_parse_stack ();
4077 top_stack
->cur_st
= st
;
4078 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4080 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4081 BLOCK_END (top_stack
->cur_block
) = 0;
4082 top_stack
->blocktype
= stFile
;
4083 top_stack
->cur_type
= 0;
4084 top_stack
->procadr
= 0;
4085 top_stack
->numargs
= 0;
4086 found_ecoff_debugging_info
= 0;
4093 /* Parse local symbols first */
4094 sym_ptr
= ((char *) debug_info
->external_sym
4095 + fh
->isymBase
* external_sym_size
);
4096 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4097 while (sym_ptr
< sym_end
)
4102 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4103 c
= parse_symbol (&sh
,
4104 debug_info
->external_aux
+ fh
->iauxBase
,
4105 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4106 sym_ptr
+= c
* external_sym_size
;
4109 /* Linenumbers. At the end, check if we can save memory.
4110 parse_lines has to look ahead an arbitrary number of PDR
4111 structures, so we swap them all first. */
4115 struct cleanup
*old_chain
;
4121 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4123 old_chain
= make_cleanup (xfree
, pr_block
);
4125 pdr_ptr
= ((char *) debug_info
->external_pdr
4126 + fh
->ipdFirst
* external_pdr_size
);
4127 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4131 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4133 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4135 /* Determine lowest PDR address, the PDRs are not always
4137 if (pdr_in
== pr_block
)
4138 lowest_pdr_addr
= pdr_in
->adr
;
4139 else if (pdr_in
->adr
< lowest_pdr_addr
)
4140 lowest_pdr_addr
= pdr_in
->adr
;
4143 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4144 if (lines
->nitems
< fh
->cline
)
4145 lines
= shrink_linetable (lines
);
4147 /* Fill in procedure info next. */
4149 pdr_in_end
= pdr_in
+ fh
->cpd
;
4150 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4151 parse_procedure (pdr_in
, 0, pst
);
4153 do_cleanups (old_chain
);
4157 LINETABLE (st
) = lines
;
4159 /* .. and our share of externals.
4160 XXX use the global list to speed up things here. how?
4161 FIXME, Maybe quit once we have found the right number of ext's? */
4162 top_stack
->cur_st
= st
;
4163 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4165 top_stack
->blocktype
= stFile
;
4167 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4168 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4169 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4171 /* If there are undefined symbols, tell the user.
4172 The alpha has an undefined symbol for every symbol that is
4173 from a shared library, so tell the user only if verbose is on. */
4174 if (info_verbose
&& n_undef_symbols
)
4176 printf_filtered (_("File %s contains %d unresolved references:"),
4177 st
->filename
, n_undef_symbols
);
4178 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4179 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4180 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4190 /* Now link the psymtab and the symtab. */
4193 current_objfile
= NULL
;
4196 /* Ancillary parsing procedures. */
4198 /* Return 1 if the symbol pointed to by SH has a cross reference
4199 to an opaque aggregate type, else 0. */
4202 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4209 if (sh
->index
== indexNil
)
4212 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4213 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4214 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4218 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4219 if (rn
->rfd
== 0xfff)
4220 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4228 /* Lookup the type at relative index RN. Return it in TPP
4229 if found and in any event come up with its name PNAME.
4230 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4231 Return value says how many aux symbols we ate. */
4234 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
, enum type_code type_code
, /* Use to alloc new type if none is found. */
4235 char **pname
, int bigend
, char *sym_name
)
4244 struct mdebug_pending
*pend
;
4246 *tpp
= (struct type
*) NULL
;
4248 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4250 /* Escape index means 'the next one' */
4251 if (rn
->rfd
== 0xfff)
4254 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4261 /* mips cc uses a rf of -1 for opaque struct definitions.
4262 Set TYPE_FLAG_STUB for these types so that check_typedef will
4263 resolve them if the struct gets defined in another compilation unit. */
4266 *pname
= "<undefined>";
4267 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4271 /* mips cc uses an escaped rn->index of 0 for struct return types
4272 of procedures that were compiled without -g. These will always remain
4274 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4276 *pname
= "<undefined>";
4280 /* Find the relative file descriptor and the symbol in it. */
4281 fh
= get_rfd (fd
, rf
);
4282 xref_fd
= fh
- debug_info
->fdr
;
4284 if (rn
->index
>= fh
->csym
)
4286 /* File indirect entry is corrupt. */
4287 *pname
= "<illegal>";
4288 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4292 /* If we have processed this symbol then we left a forwarding
4293 pointer to the type in the pending list. If not, we`ll put
4294 it in a list of pending types, to be processed later when
4295 the file will be. In any event, we collect the name for the
4298 esh
= ((char *) debug_info
->external_sym
4299 + ((fh
->isymBase
+ rn
->index
)
4300 * debug_swap
->external_sym_size
));
4301 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4303 /* Make sure that this type of cross reference can be handled. */
4304 if ((sh
.sc
!= scInfo
4305 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4306 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4307 && sh
.st
!= stEnum
))
4308 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4310 /* File indirect entry is corrupt. */
4311 *pname
= "<illegal>";
4312 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4316 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4318 pend
= is_pending_symbol (fh
, esh
);
4323 /* We have not yet seen this type. */
4325 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4329 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4331 a) forward declarations of structs/unions/enums which are not
4332 defined in this compilation unit.
4333 For these the type will be void. This is a bad design decision
4334 as cross referencing across compilation units is impossible
4335 due to the missing name.
4336 b) forward declarations of structs/unions/enums/typedefs which
4337 are defined later in this file or in another file in the same
4338 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4339 Simply cross reference those again to get the true type.
4340 The forward references are not entered in the pending list and
4341 in the symbol table. */
4343 (*debug_swap
->swap_tir_in
) (bigend
,
4344 &(debug_info
->external_aux
4345 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4347 if (tir
.tq0
!= tqNil
)
4348 complaint (&symfile_complaints
,
4349 _("illegal tq0 in forward typedef for %s"), sym_name
);
4353 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4355 *pname
= "<undefined>";
4362 (debug_info
->external_aux
4363 + fh
->iauxBase
+ sh
.index
+ 1),
4364 tpp
, type_code
, pname
,
4365 fh
->fBigendian
, sym_name
);
4369 /* Follow a forward typedef. This might recursively
4370 call cross_ref till we get a non typedef'ed type.
4371 FIXME: This is not correct behaviour, but gdb currently
4372 cannot handle typedefs without type copying. Type
4373 copying is impossible as we might have mutual forward
4374 references between two files and the copied type would not
4375 get filled in when we later parse its definition. */
4376 *tpp
= parse_type (xref_fd
,
4377 debug_info
->external_aux
+ fh
->iauxBase
,
4381 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4382 add_pending (fh
, esh
, *tpp
);
4386 complaint (&symfile_complaints
,
4387 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4389 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4395 else if (sh
.st
== stTypedef
)
4397 /* Parse the type for a normal typedef. This might recursively call
4398 cross_ref till we get a non typedef'ed type.
4399 FIXME: This is not correct behaviour, but gdb currently
4400 cannot handle typedefs without type copying. But type copying is
4401 impossible as we might have mutual forward references between
4402 two files and the copied type would not get filled in when
4403 we later parse its definition. */
4404 *tpp
= parse_type (xref_fd
,
4405 debug_info
->external_aux
+ fh
->iauxBase
,
4409 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4413 /* Cross reference to a struct/union/enum which is defined
4414 in another file in the same compilation unit but that file
4415 has not been parsed yet.
4416 Initialize the type only, it will be filled in when
4417 it's definition is parsed. */
4418 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4420 add_pending (fh
, esh
, *tpp
);
4423 /* We used one auxent normally, two if we got a "next one" rf. */
4428 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4429 keeping the symtab sorted */
4431 static struct symbol
*
4432 mylookup_symbol (char *name
, struct block
*block
,
4433 domain_enum domain
, enum address_class
class)
4435 struct dict_iterator iter
;
4440 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4442 if (DEPRECATED_SYMBOL_NAME (sym
)[0] == inc
4443 && SYMBOL_DOMAIN (sym
) == domain
4444 && SYMBOL_CLASS (sym
) == class
4445 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), name
) == 0)
4449 block
= BLOCK_SUPERBLOCK (block
);
4451 return mylookup_symbol (name
, block
, domain
, class);
4456 /* Add a new symbol S to a block B. */
4459 add_symbol (struct symbol
*s
, struct block
*b
)
4461 dict_add_symbol (BLOCK_DICT (b
), s
);
4464 /* Add a new block B to a symtab S */
4467 add_block (struct block
*b
, struct symtab
*s
)
4469 struct blockvector
*bv
= BLOCKVECTOR (s
);
4471 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4472 (sizeof (struct blockvector
)
4473 + BLOCKVECTOR_NBLOCKS (bv
)
4474 * sizeof (bv
->block
)));
4475 if (bv
!= BLOCKVECTOR (s
))
4476 BLOCKVECTOR (s
) = bv
;
4478 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4481 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4482 MIPS' linenumber encoding might need more than one byte
4483 to describe it, LAST is used to detect these continuation lines.
4485 Combining lines with the same line number seems like a bad idea.
4486 E.g: There could be a line number entry with the same line number after the
4487 prologue and GDB should not ignore it (this is a better way to find
4488 a prologue than mips_skip_prologue).
4489 But due to the compressed line table format there are line number entries
4490 for the same line which are needed to bridge the gap to the next
4491 line number entry. These entries have a bogus address info with them
4492 and we are unable to tell them from intended duplicate line number
4494 This is another reason why -ggdb debugging format is preferable. */
4497 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4499 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4500 Change them to something sensible. */
4504 last
= -2; /* make sure we record first line */
4506 if (last
== lineno
) /* skip continuation lines */
4509 lt
->item
[lt
->nitems
].line
= lineno
;
4510 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4514 /* Sorting and reordering procedures */
4516 /* Blocks with a smaller low bound should come first */
4519 compare_blocks (const void *arg1
, const void *arg2
)
4522 struct block
**b1
= (struct block
**) arg1
;
4523 struct block
**b2
= (struct block
**) arg2
;
4525 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4527 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4531 /* Sort the blocks of a symtab S.
4532 Reorder the blocks in the blockvector by code-address,
4533 as required by some MI search routines */
4536 sort_blocks (struct symtab
*s
)
4538 struct blockvector
*bv
= BLOCKVECTOR (s
);
4540 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4543 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4544 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4545 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4546 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4550 * This is very unfortunate: normally all functions are compiled in
4551 * the order they are found, but if the file is compiled -O3 things
4552 * are very different. It would be nice to find a reliable test
4553 * to detect -O3 images in advance.
4555 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4556 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4557 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4558 sizeof (struct block
*),
4563 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4565 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4566 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4567 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4568 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4571 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4572 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4574 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4575 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4576 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4577 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4581 /* Constructor/restructor/destructor procedures */
4583 /* Allocate a new symtab for NAME. Needs an estimate of how many
4584 linenumbers MAXLINES we'll put in it */
4586 static struct symtab
*
4587 new_symtab (char *name
, int maxlines
, struct objfile
*objfile
)
4589 struct symtab
*s
= allocate_symtab (name
, objfile
);
4591 LINETABLE (s
) = new_linetable (maxlines
);
4593 /* All symtabs must have at least two blocks */
4594 BLOCKVECTOR (s
) = new_bvect (2);
4595 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4596 = new_block (NON_FUNCTION_BLOCK
);
4597 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4598 = new_block (NON_FUNCTION_BLOCK
);
4599 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4600 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4602 s
->free_code
= free_linetable
;
4603 s
->debugformat
= obsavestring ("ECOFF", 5,
4604 &objfile
->objfile_obstack
);
4608 /* Allocate a new partial_symtab NAME */
4610 static struct partial_symtab
*
4611 new_psymtab (char *name
, struct objfile
*objfile
)
4613 struct partial_symtab
*psymtab
;
4615 psymtab
= allocate_psymtab (name
, objfile
);
4616 psymtab
->section_offsets
= objfile
->section_offsets
;
4618 /* Keep a backpointer to the file's symbols */
4620 psymtab
->read_symtab_private
= ((char *)
4621 obstack_alloc (&objfile
->objfile_obstack
,
4622 sizeof (struct symloc
)));
4623 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4624 CUR_BFD (psymtab
) = cur_bfd
;
4625 DEBUG_SWAP (psymtab
) = debug_swap
;
4626 DEBUG_INFO (psymtab
) = debug_info
;
4627 PENDING_LIST (psymtab
) = pending_list
;
4629 /* The way to turn this into a symtab is to call... */
4630 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4635 /* Allocate a linetable array of the given SIZE. Since the struct
4636 already includes one item, we subtract one when calculating the
4637 proper size to allocate. */
4639 static struct linetable
*
4640 new_linetable (int size
)
4642 struct linetable
*l
;
4644 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4645 l
= (struct linetable
*) xmalloc (size
);
4650 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4651 I am not so sure about the 3.4 ones.
4653 Since the struct linetable already includes one item, we subtract one when
4654 calculating the proper size to allocate. */
4656 static struct linetable
*
4657 shrink_linetable (struct linetable
*lt
)
4660 return (struct linetable
*) xrealloc ((void *) lt
,
4661 (sizeof (struct linetable
)
4663 * sizeof (lt
->item
))));
4666 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4668 static struct blockvector
*
4669 new_bvect (int nblocks
)
4671 struct blockvector
*bv
;
4674 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4675 bv
= (struct blockvector
*) xzalloc (size
);
4677 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4682 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4683 is non-zero, assume the block is associated to a function, and make
4684 sure that the symbols are stored linearly; otherwise, store them
4687 static struct block
*
4688 new_block (enum block_type type
)
4690 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4691 allocate the block. Which, in turn, suggests that the block
4692 should be allocated on an obstack. */
4693 struct block
*retval
= xzalloc (sizeof (struct block
));
4695 if (type
== FUNCTION_BLOCK
)
4696 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4698 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4703 /* Create a new symbol with printname NAME */
4705 static struct symbol
*
4706 new_symbol (char *name
)
4708 struct symbol
*s
= ((struct symbol
*)
4709 obstack_alloc (¤t_objfile
->objfile_obstack
,
4710 sizeof (struct symbol
)));
4712 memset (s
, 0, sizeof (*s
));
4713 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4714 SYMBOL_SET_NAMES (s
, name
, strlen (name
), current_objfile
);
4718 /* Create a new type with printname NAME */
4720 static struct type
*
4721 new_type (char *name
)
4725 t
= alloc_type (current_objfile
);
4726 TYPE_NAME (t
) = name
;
4727 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4731 /* Read ECOFF debugging information from a BFD section. This is
4732 called from elfread.c. It parses the section into a
4733 ecoff_debug_info struct, and then lets the rest of the file handle
4737 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4738 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4740 bfd
*abfd
= objfile
->obfd
;
4741 struct ecoff_debug_info
*info
;
4742 struct cleanup
*back_to
;
4744 /* FIXME: It's not clear whether we should be getting minimal symbol
4745 information from .mdebug in an ELF file, or whether we will.
4746 Re-initialize the minimal symbol reader in case we do. */
4748 init_minimal_symbol_collection ();
4749 back_to
= make_cleanup_discard_minimal_symbols ();
4751 info
= ((struct ecoff_debug_info
*)
4752 obstack_alloc (&objfile
->objfile_obstack
,
4753 sizeof (struct ecoff_debug_info
)));
4755 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4756 error (_("Error reading ECOFF debugging information: %s"),
4757 bfd_errmsg (bfd_get_error ()));
4759 mdebug_build_psymtabs (objfile
, swap
, info
);
4761 install_minimal_symbols (objfile
);
4762 do_cleanups (back_to
);
4766 _initialize_mdebugread (void)
4769 init_type (TYPE_CODE_VOID
, 1,
4771 "void", (struct objfile
*) NULL
);
4773 init_type (TYPE_CODE_INT
, 1,
4775 "char", (struct objfile
*) NULL
);
4776 mdebug_type_unsigned_char
=
4777 init_type (TYPE_CODE_INT
, 1,
4779 "unsigned char", (struct objfile
*) NULL
);
4781 init_type (TYPE_CODE_INT
, 2,
4783 "short", (struct objfile
*) NULL
);
4784 mdebug_type_unsigned_short
=
4785 init_type (TYPE_CODE_INT
, 2,
4787 "unsigned short", (struct objfile
*) NULL
);
4788 mdebug_type_int_32
=
4789 init_type (TYPE_CODE_INT
, 4,
4791 "int", (struct objfile
*) NULL
);
4792 mdebug_type_unsigned_int_32
=
4793 init_type (TYPE_CODE_INT
, 4,
4795 "unsigned int", (struct objfile
*) NULL
);
4796 mdebug_type_int_64
=
4797 init_type (TYPE_CODE_INT
, 8,
4799 "int", (struct objfile
*) NULL
);
4800 mdebug_type_unsigned_int_64
=
4801 init_type (TYPE_CODE_INT
, 8,
4803 "unsigned int", (struct objfile
*) NULL
);
4804 mdebug_type_long_32
=
4805 init_type (TYPE_CODE_INT
, 4,
4807 "long", (struct objfile
*) NULL
);
4808 mdebug_type_unsigned_long_32
=
4809 init_type (TYPE_CODE_INT
, 4,
4811 "unsigned long", (struct objfile
*) NULL
);
4812 mdebug_type_long_64
=
4813 init_type (TYPE_CODE_INT
, 8,
4815 "long", (struct objfile
*) NULL
);
4816 mdebug_type_unsigned_long_64
=
4817 init_type (TYPE_CODE_INT
, 8,
4819 "unsigned long", (struct objfile
*) NULL
);
4820 mdebug_type_long_long_64
=
4821 init_type (TYPE_CODE_INT
, 8,
4823 "long long", (struct objfile
*) NULL
);
4824 mdebug_type_unsigned_long_long_64
=
4825 init_type (TYPE_CODE_INT
, 8,
4827 "unsigned long long", (struct objfile
*) NULL
);
4828 mdebug_type_adr_32
=
4829 init_type (TYPE_CODE_PTR
, 4,
4831 "adr_32", (struct objfile
*) NULL
);
4832 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4833 mdebug_type_adr_64
=
4834 init_type (TYPE_CODE_PTR
, 8,
4836 "adr_64", (struct objfile
*) NULL
);
4837 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4839 init_type (TYPE_CODE_FLT
,
4840 gdbarch_float_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4841 0, "float", (struct objfile
*) NULL
);
4842 mdebug_type_double
=
4843 init_type (TYPE_CODE_FLT
,
4844 gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4845 0, "double", (struct objfile
*) NULL
);
4846 mdebug_type_complex
=
4847 init_type (TYPE_CODE_COMPLEX
,
4848 2 * gdbarch_float_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4849 0, "complex", (struct objfile
*) NULL
);
4850 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4851 mdebug_type_double_complex
=
4852 init_type (TYPE_CODE_COMPLEX
,
4853 2 * gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4854 0, "double complex", (struct objfile
*) NULL
);
4855 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4857 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4859 mdebug_type_string
=
4860 init_type (TYPE_CODE_STRING
,
4861 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4863 (struct objfile
*) NULL
);
4865 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4866 good? Would we be better off with TYPE_CODE_ERROR? Should
4867 TYPE_CODE_ERROR print things in hex if it knows the size? */
4868 mdebug_type_fixed_dec
=
4869 init_type (TYPE_CODE_INT
,
4870 gdbarch_int_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4872 (struct objfile
*) NULL
);
4874 mdebug_type_float_dec
=
4875 init_type (TYPE_CODE_ERROR
,
4876 gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4877 0, "floating decimal",
4878 (struct objfile
*) NULL
);