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, 2008, 2009, 2010,
5 2011 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 3 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, see <http://www.gnu.org/licenses/>. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
48 #include "filenames.h"
50 #include "gdb_obstack.h"
52 #include "stabsread.h"
53 #include "complaints.h"
55 #include "gdb-demangle.h"
56 #include "gdb_assert.h"
58 #include "dictionary.h"
59 #include "mdebugread.h"
61 #include "gdb_string.h"
66 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
68 #include "libaout.h" /* Private BFD a.out information. */
69 #include "aout/aout64.h"
70 #include "aout/stab_gnu.h" /* STABS information. */
72 #include "expression.h"
74 extern void _initialize_mdebugread (void);
76 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
77 We use this define in order to know whether we should override a
78 symbol's ECOFF section with its ELF section. This is necessary in
79 case the symbol's ELF section could not be represented in ECOFF. */
80 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
81 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
83 /* The objfile we are currently reading. */
85 static struct objfile
*mdebugread_objfile
;
89 /* We put a pointer to this structure in the read_symtab_private field
94 /* Index of the FDR that this psymtab represents. */
96 /* The BFD that the psymtab was created from. */
98 const struct ecoff_debug_swap
*debug_swap
;
99 struct ecoff_debug_info
*debug_info
;
100 struct mdebug_pending
**pending_list
;
101 /* Pointer to external symbols for this file. */
103 /* Size of extern_tab. */
105 enum language pst_language
;
108 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
109 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
110 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
111 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
112 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
113 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
115 #define SC_IS_TEXT(sc) ((sc) == scText \
116 || (sc) == scRConst \
119 #define SC_IS_DATA(sc) ((sc) == scData \
124 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
125 #define SC_IS_BSS(sc) ((sc) == scBss)
126 #define SC_IS_SBSS(sc) ((sc) == scSBss)
127 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
129 /* Various complaints about symbol reading that don't abort the process. */
131 index_complaint (const char *arg1
)
133 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
137 unknown_ext_complaint (const char *arg1
)
139 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
143 basic_type_complaint (int arg1
, const char *arg2
)
145 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
150 bad_tag_guess_complaint (const char *arg1
)
152 complaint (&symfile_complaints
,
153 _("guessed tag type of %s incorrectly"), arg1
);
157 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
159 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
164 unexpected_type_code_complaint (const char *arg1
)
166 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
169 /* Macros and extra defs. */
171 /* Puns: hard to find whether -g was used and how. */
173 #define MIN_GLEVEL GLEVEL_0
174 #define compare_glevel(a,b) \
175 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
176 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
178 /* Things that really are local to this module. */
180 /* Remember what we deduced to be the source language of this psymtab. */
182 static enum language psymtab_language
= language_unknown
;
188 /* How to parse debugging information for CUR_BFD. */
190 static const struct ecoff_debug_swap
*debug_swap
;
192 /* Pointers to debugging information for CUR_BFD. */
194 static struct ecoff_debug_info
*debug_info
;
196 /* Pointer to current file decriptor record, and its index. */
201 /* Index of current symbol. */
205 /* Note how much "debuggable" this image is. We would like
206 to see at least one FDR with full symbols. */
208 static int max_gdbinfo
;
209 static int max_glevel
;
211 /* When examining .o files, report on undefined symbols. */
213 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
215 /* Pseudo symbol to use when putting stabs into the symbol table. */
217 static char stabs_symbol
[] = STABS_SYMBOL
;
219 /* Nonzero if we have seen ecoff debugging info for a file. */
221 static int found_ecoff_debugging_info
;
223 /* Forward declarations. */
225 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
228 static void parse_partial_symbols (struct objfile
*);
230 static int has_opaque_xref (FDR
*, SYMR
*);
232 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
233 char **, int, char *);
235 static struct symbol
*new_symbol (char *);
237 static struct type
*new_type (char *);
239 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
241 static struct block
*new_block (enum block_type
);
243 static struct symtab
*new_symtab (const char *, int, struct objfile
*);
245 static struct linetable
*new_linetable (int);
247 static struct blockvector
*new_bvect (int);
249 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
252 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
255 static void sort_blocks (struct symtab
*);
257 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
259 static void psymtab_to_symtab_1 (struct partial_symtab
*, const char *);
261 static void add_block (struct block
*, struct symtab
*);
263 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
265 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
267 static struct linetable
*shrink_linetable (struct linetable
*);
269 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
272 static char *mdebug_next_symbol_text (struct objfile
*);
274 /* Exported procedure: Builds a symtab from the PST partial one.
275 Restores the environment in effect when PST was created, delegates
276 most of the work to an ancillary procedure, and sorts
277 and reorders the symtab list at the end. */
280 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
287 printf_filtered (_("Reading in symbols for %s..."), pst
->filename
);
288 gdb_flush (gdb_stdout
);
291 next_symbol_text_func
= mdebug_next_symbol_text
;
293 psymtab_to_symtab_1 (pst
, pst
->filename
);
295 /* Match with global symbols. This only needs to be done once,
296 after all of the symtabs and dependencies have been read in. */
297 scan_file_globals (pst
->objfile
);
300 printf_filtered (_("done.\n"));
303 /* File-level interface functions. */
305 /* Find a file descriptor given its index RF relative to a file CF. */
308 get_rfd (int cf
, int rf
)
314 fdrs
= debug_info
->fdr
;
316 /* Object files do not have the RFD table, all refs are absolute. */
319 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
320 ((char *) debug_info
->external_rfd
322 * debug_swap
->external_rfd_size
)),
327 /* Return a safer print NAME for a file descriptor. */
333 return "<stripped file>";
336 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
340 /* Read in and parse the symtab of the file OBJFILE. Symbols from
341 different sections are relocated via the SECTION_OFFSETS. */
344 mdebug_build_psymtabs (struct objfile
*objfile
,
345 const struct ecoff_debug_swap
*swap
,
346 struct ecoff_debug_info
*info
)
348 cur_bfd
= objfile
->obfd
;
352 stabsread_new_init ();
353 buildsym_new_init ();
354 free_header_files ();
355 init_header_files ();
357 /* Make sure all the FDR information is swapped in. */
358 if (info
->fdr
== (FDR
*) NULL
)
364 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
365 (info
->symbolic_header
.ifdMax
367 fdr_src
= info
->external_fdr
;
369 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
371 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
372 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
375 parse_partial_symbols (objfile
);
378 /* Check to make sure file was compiled with -g. If not, warn the
379 user of this limitation. */
380 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
382 if (max_gdbinfo
== 0)
383 printf_unfiltered (_("\n%s not compiled with -g, "
384 "debugging support is limited.\n"),
386 printf_unfiltered (_("You should compile with -g2 or "
387 "-g3 for best debugging support.\n"));
388 gdb_flush (gdb_stdout
);
393 /* Local utilities */
395 /* Map of FDR indexes to partial symtabs. */
399 struct partial_symtab
*pst
; /* the psymtab proper */
400 long n_globals
; /* exported globals (external symbols) */
401 long globals_offset
; /* cumulative */
405 /* Utility stack, used to nest procedures and blocks properly.
406 It is a doubly linked list, to avoid too many alloc/free.
407 Since we might need it quite a few times it is NOT deallocated
410 static struct parse_stack
412 struct parse_stack
*next
, *prev
;
413 struct symtab
*cur_st
; /* Current symtab. */
414 struct block
*cur_block
; /* Block in it. */
416 /* What are we parsing. stFile, or stBlock are for files and
417 blocks. stProc or stStaticProc means we have seen the start of a
418 procedure, but not the start of the block within in. When we see
419 the start of that block, we change it to stNil, without pushing a
420 new block, i.e. stNil means both a procedure and a block. */
424 struct type
*cur_type
; /* Type we parse fields for. */
425 int cur_field
; /* Field number in cur_type. */
426 CORE_ADDR procadr
; /* Start addres of this procedure. */
427 int numargs
; /* Its argument count. */
430 *top_stack
; /* Top stack ptr */
433 /* Enter a new lexical context. */
436 push_parse_stack (void)
438 struct parse_stack
*new;
440 /* Reuse frames if possible. */
441 if (top_stack
&& top_stack
->prev
)
442 new = top_stack
->prev
;
444 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
445 /* Initialize new frame with previous content. */
448 struct parse_stack
*prev
= new->prev
;
451 top_stack
->prev
= new;
453 new->next
= top_stack
;
458 /* Exit a lexical context. */
461 pop_parse_stack (void)
466 top_stack
= top_stack
->next
;
470 /* Cross-references might be to things we haven't looked at
471 yet, e.g. type references. To avoid too many type
472 duplications we keep a quick fixup table, an array
473 of lists of references indexed by file descriptor. */
475 struct mdebug_pending
477 struct mdebug_pending
*next
; /* link */
478 char *s
; /* the unswapped symbol */
479 struct type
*t
; /* its partial type descriptor */
483 /* The pending information is kept for an entire object file, and used
484 to be in the deprecated_sym_private field. I took it out when I
485 split mdebugread from mipsread, because this might not be the only
486 type of symbols read from an object file. Instead, we allocate the
487 pending information table when we create the partial symbols, and
488 we store a pointer to the single table in each psymtab. */
490 static struct mdebug_pending
**pending_list
;
492 /* Check whether we already saw symbol SH in file FH. */
494 static struct mdebug_pending
*
495 is_pending_symbol (FDR
*fh
, char *sh
)
497 int f_idx
= fh
- debug_info
->fdr
;
498 struct mdebug_pending
*p
;
500 /* Linear search is ok, list is typically no more than 10 deep. */
501 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
507 /* Add a new symbol SH of type T. */
510 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
512 int f_idx
= fh
- debug_info
->fdr
;
513 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
515 /* Make sure we do not make duplicates. */
518 p
= ((struct mdebug_pending
*)
519 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
520 sizeof (struct mdebug_pending
)));
523 p
->next
= pending_list
[f_idx
];
524 pending_list
[f_idx
] = p
;
529 /* Parsing Routines proper. */
531 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
532 For blocks, procedures and types we open a new lexical context.
533 This is basically just a big switch on the symbol's type. Argument
534 AX is the base pointer of aux symbols for this file (fh->iauxBase).
535 EXT_SH points to the unswapped symbol, which is needed for struct,
536 union, etc., types; it is NULL for an EXTR. BIGEND says whether
537 aux symbols are big-endian or little-endian. Return count of
538 SYMR's handled (normally one). */
541 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
543 return gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
546 static const struct symbol_register_ops mdebug_register_funcs
= {
551 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
552 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
554 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
555 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
556 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
560 struct mdebug_pending
*pend
;
564 enum address_class
class;
566 long svalue
= sh
->value
;
569 if (ext_sh
== (char *) NULL
)
570 name
= debug_info
->ssext
+ sh
->iss
;
572 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
578 /* Do not relocate relative values.
579 The value of a stEnd symbol is the displacement from the
580 corresponding start symbol value.
581 The value of a stBlock symbol is the displacement from the
582 procedure address. */
583 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
584 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
591 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
595 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
604 case stGlobal
: /* External symbol, goes into global block. */
606 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
608 s
= new_symbol (name
);
609 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
612 case stStatic
: /* Static data, goes into current block. */
614 b
= top_stack
->cur_block
;
615 s
= new_symbol (name
);
616 if (SC_IS_COMMON (sh
->sc
))
618 /* It is a FORTRAN common block. At least for SGI Fortran the
619 address is not in the symbol; we need to fix it later in
620 scan_file_globals. */
621 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
622 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
623 global_sym_chain
[bucket
] = s
;
626 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
629 case stLocal
: /* Local variable, goes into current block. */
630 b
= top_stack
->cur_block
;
631 s
= new_symbol (name
);
632 SYMBOL_VALUE (s
) = svalue
;
633 if (sh
->sc
== scRegister
)
635 class = LOC_REGISTER
;
636 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
641 data
: /* Common code for symbols describing data. */
642 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
643 SYMBOL_CLASS (s
) = class;
644 add_symbol (s
, top_stack
->cur_st
, b
);
646 /* Type could be missing if file is compiled without debugging info. */
647 if (SC_IS_UNDEF (sh
->sc
)
648 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
649 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
651 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
652 /* Value of a data symbol is its memory address. */
655 case stParam
: /* Arg to procedure, goes into current
658 found_ecoff_debugging_info
= 1;
659 top_stack
->numargs
++;
661 /* Special GNU C++ name. */
662 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
663 name
= "this"; /* FIXME, not alloc'd in obstack. */
664 s
= new_symbol (name
);
666 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
667 SYMBOL_IS_ARGUMENT (s
) = 1;
671 /* Pass by value in register. */
672 SYMBOL_CLASS (s
) = LOC_REGISTER
;
673 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
676 /* Pass by reference on stack. */
677 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
680 /* Pass by reference in register. */
681 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
682 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
685 /* Pass by value on stack. */
686 SYMBOL_CLASS (s
) = LOC_ARG
;
689 SYMBOL_VALUE (s
) = svalue
;
690 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
691 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
694 case stLabel
: /* label, goes into current block. */
695 s
= new_symbol (name
);
696 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
697 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused. */
698 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
699 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
700 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
703 case stProc
: /* Procedure, usually goes into global block. */
704 case stStaticProc
: /* Static procedure, goes into current block. */
705 /* For stProc symbol records, we need to check the storage class
706 as well, as only (stProc, scText) entries represent "real"
707 procedures - See the Compaq document titled "Object File /
708 Symbol Table Format Specification" for more information.
709 If the storage class is not scText, we discard the whole block
710 of symbol records for this stProc. */
711 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
713 char *ext_tsym
= ext_sh
;
714 int keep_counting
= 1;
717 while (keep_counting
)
719 ext_tsym
+= external_sym_size
;
720 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
730 complaint (&symfile_complaints
,
731 _("unknown symbol type 0x%x"), sh
->st
);
737 s
= new_symbol (name
);
738 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
739 SYMBOL_CLASS (s
) = LOC_BLOCK
;
740 /* Type of the return value. */
741 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
742 t
= objfile_type (objfile
)->builtin_int
;
745 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
746 if (strcmp (name
, "malloc") == 0
747 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
749 /* I don't know why, but, at least under Alpha GNU/Linux,
750 when linking against a malloc without debugging
751 symbols, its read as a function returning void---this
752 is bad because it means we cannot call functions with
753 string arguments interactively; i.e., "call
754 printf("howdy\n")" would fail with the error message
755 "program has no memory available". To avoid this, we
756 patch up the type and make it void*
757 instead. (davidm@azstarnet.com). */
758 t
= make_pointer_type (t
, NULL
);
761 b
= top_stack
->cur_block
;
762 if (sh
->st
== stProc
)
764 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
766 /* The next test should normally be true, but provides a
767 hook for nested functions (which we don't want to make
769 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
770 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
771 /* Irix 5 sometimes has duplicate names for the same
772 function. We want to add such names up at the global
773 level, not as a nested function. */
774 else if (sh
->value
== top_stack
->procadr
)
775 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
777 add_symbol (s
, top_stack
->cur_st
, b
);
779 /* Make a type for the procedure itself. */
780 SYMBOL_TYPE (s
) = lookup_function_type (t
);
782 /* All functions in C++ have prototypes. For C we don't have enough
783 information in the debug info. */
784 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
785 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
787 /* Create and enter a new lexical context. */
788 b
= new_block (FUNCTION_BLOCK
);
789 SYMBOL_BLOCK_VALUE (s
) = b
;
790 BLOCK_FUNCTION (b
) = s
;
791 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
792 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
793 add_block (b
, top_stack
->cur_st
);
795 /* Not if we only have partial info. */
796 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
800 top_stack
->cur_block
= b
;
801 top_stack
->blocktype
= sh
->st
;
802 top_stack
->cur_type
= SYMBOL_TYPE (s
);
803 top_stack
->cur_field
= -1;
804 top_stack
->procadr
= sh
->value
;
805 top_stack
->numargs
= 0;
808 /* Beginning of code for structure, union, and enum definitions.
809 They all share a common set of local variables, defined here. */
811 enum type_code type_code
;
817 case stStruct
: /* Start a block defining a struct type. */
818 type_code
= TYPE_CODE_STRUCT
;
819 goto structured_common
;
821 case stUnion
: /* Start a block defining a union type. */
822 type_code
= TYPE_CODE_UNION
;
823 goto structured_common
;
825 case stEnum
: /* Start a block defining an enum type. */
826 type_code
= TYPE_CODE_ENUM
;
827 goto structured_common
;
829 case stBlock
: /* Either a lexical block, or some type. */
830 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
831 goto case_stBlock_code
; /* Lexical block */
833 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
835 /* Common code for handling struct, union, enum, and/or as-yet-
836 unknown-type blocks of info about structured data. `type_code'
837 has been set to the proper TYPE_CODE, if we know it. */
839 found_ecoff_debugging_info
= 1;
841 top_stack
->blocktype
= stBlock
;
843 /* First count the number of fields and the highest value. */
846 for (ext_tsym
= ext_sh
+ external_sym_size
;
848 ext_tsym
+= external_sym_size
)
852 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
857 /* C++ encodes class types as structures where there the
858 methods are encoded as stProc. The scope of stProc
859 symbols also ends with stEnd, thus creating a risk of
860 taking the wrong stEnd symbol record as the end of
861 the current struct, which would cause GDB to undercount
862 the real number of fields in this struct. To make sure
863 we really reached the right stEnd symbol record, we
864 check the associated name, and match it against the
865 struct name. Since method names are mangled while
866 the class name is not, there is no risk of having a
867 method whose name is identical to the class name
868 (in particular constructor method names are different
869 from the class name). There is therefore no risk that
870 this check stops the count on the StEnd of a method.
872 Also, assume that we're really at the end when tsym.iss
874 if (tsym
.iss
== issNull
875 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
881 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
883 /* If the type of the member is Nil (or Void),
884 without qualifiers, assume the tag is an
886 Alpha cc -migrate enums are recognized by a zero
887 index and a zero symbol value.
888 DU 4.0 cc enums are recognized by a member type of
889 btEnum without qualifiers and a zero symbol value. */
890 if (tsym
.index
== indexNil
891 || (tsym
.index
== 0 && sh
->value
== 0))
892 type_code
= TYPE_CODE_ENUM
;
895 (*debug_swap
->swap_tir_in
) (bigend
,
896 &ax
[tsym
.index
].a_ti
,
898 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
899 || (tir
.bt
== btEnum
&& sh
->value
== 0))
901 type_code
= TYPE_CODE_ENUM
;
905 if (tsym
.value
> max_value
)
906 max_value
= tsym
.value
;
915 /* This is a no-op; is it trying to tell us something
916 we should be checking? */
917 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
921 /* This is something like a struct within a
922 struct. Skip over the fields of the inner
923 struct. The -1 is because the for loop will
924 increment ext_tsym. */
925 ext_tsym
= ((char *) debug_info
->external_sym
926 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
927 * external_sym_size
));
933 /* mips cc puts out a typedef for struct x if it is not yet
934 defined when it encounters
935 struct y { struct x *xp; };
940 /* Irix5 cc puts out a stIndirect for struct x if it is not
941 yet defined when it encounters
942 struct y { struct x *xp; };
947 complaint (&symfile_complaints
,
948 _("declaration block contains "
949 "unhandled symbol type %d"),
955 /* In an stBlock, there is no way to distinguish structs,
956 unions, and enums at this point. This is a bug in the
957 original design (that has been fixed with the recent
958 addition of the stStruct, stUnion, and stEnum symbol
959 types.) The way you can tell is if/when you see a variable
960 or field of that type. In that case the variable's type
961 (in the AUX table) says if the type is struct, union, or
962 enum, and points back to the stBlock here. So you can
963 patch the tag kind up later - but only if there actually is
964 a variable or field of that type.
966 So until we know for sure, we will guess at this point.
968 If the first member has index==indexNil or a void type,
969 assume we have an enumeration.
970 Otherwise, if there is more than one member, and all
971 the members have offset 0, assume we have a union.
972 Otherwise, assume we have a struct.
974 The heuristic could guess wrong in the case of of an
975 enumeration with no members or a union with one (or zero)
976 members, or when all except the last field of a struct have
977 width zero. These are uncommon and/or illegal situations,
978 and in any case guessing wrong probably doesn't matter
981 But if we later do find out we were wrong, we fixup the tag
982 kind. Members of an enumeration must be handled
983 differently from struct/union fields, and that is harder to
984 patch up, but luckily we shouldn't need to. (If there are
985 any enumeration members, we can tell for sure it's an enum
988 if (type_code
== TYPE_CODE_UNDEF
)
990 if (nfields
> 1 && max_value
== 0)
991 type_code
= TYPE_CODE_UNION
;
993 type_code
= TYPE_CODE_STRUCT
;
996 /* Create a new type or use the pending type. */
997 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
998 if (pend
== (struct mdebug_pending
*) NULL
)
1000 t
= new_type (NULL
);
1001 add_pending (cur_fdr
, ext_sh
, t
);
1006 /* Do not set the tag name if it is a compiler generated tag name
1007 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1008 Alpha cc puts out an sh->iss of zero for those. */
1009 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1010 TYPE_TAG_NAME (t
) = NULL
;
1012 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1013 name
, (char *) NULL
);
1015 TYPE_CODE (t
) = type_code
;
1016 TYPE_LENGTH (t
) = sh
->value
;
1017 TYPE_NFIELDS (t
) = nfields
;
1018 TYPE_FIELDS (t
) = f
= ((struct field
*)
1020 nfields
* sizeof (struct field
)));
1022 if (type_code
== TYPE_CODE_ENUM
)
1024 int unsigned_enum
= 1;
1026 /* This is a non-empty enum. */
1028 /* DEC c89 has the number of enumerators in the sh.value field,
1029 not the type length, so we have to compensate for that
1030 incompatibility quirk.
1031 This might do the wrong thing for an enum with one or two
1032 enumerators and gcc -gcoff -fshort-enums, but these cases
1033 are hopefully rare enough.
1034 Alpha cc -migrate has a sh.value field of zero, we adjust
1036 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1037 || TYPE_LENGTH (t
) == 0)
1038 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1039 for (ext_tsym
= ext_sh
+ external_sym_size
;
1041 ext_tsym
+= external_sym_size
)
1044 struct symbol
*enum_sym
;
1046 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1048 if (tsym
.st
!= stMember
)
1051 SET_FIELD_BITPOS (*f
, tsym
.value
);
1052 FIELD_TYPE (*f
) = t
;
1053 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1054 FIELD_BITSIZE (*f
) = 0;
1056 enum_sym
= ((struct symbol
*)
1057 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1058 sizeof (struct symbol
)));
1059 memset (enum_sym
, 0, sizeof (struct symbol
));
1060 SYMBOL_SET_LINKAGE_NAME
1061 (enum_sym
, obsavestring (f
->name
, strlen (f
->name
),
1062 &mdebugread_objfile
->objfile_obstack
));
1063 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1064 SYMBOL_TYPE (enum_sym
) = t
;
1065 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1066 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1067 if (SYMBOL_VALUE (enum_sym
) < 0)
1069 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1071 /* Skip the stMembers that we've handled. */
1076 TYPE_UNSIGNED (t
) = 1;
1078 /* Make this the current type. */
1079 top_stack
->cur_type
= t
;
1080 top_stack
->cur_field
= 0;
1082 /* Do not create a symbol for alpha cc unnamed structs. */
1086 /* gcc puts out an empty struct for an opaque struct definitions,
1087 do not create a symbol for it either. */
1088 if (TYPE_NFIELDS (t
) == 0)
1094 s
= new_symbol (name
);
1095 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1096 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1097 SYMBOL_VALUE (s
) = 0;
1098 SYMBOL_TYPE (s
) = t
;
1099 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1102 /* End of local variables shared by struct, union, enum, and
1103 block (as yet unknown struct/union/enum) processing. */
1107 found_ecoff_debugging_info
= 1;
1108 /* Beginnning of (code) block. Value of symbol
1109 is the displacement from procedure start. */
1110 push_parse_stack ();
1112 /* Do not start a new block if this is the outermost block of a
1113 procedure. This allows the LOC_BLOCK symbol to point to the
1114 block with the local variables, so funcname::var works. */
1115 if (top_stack
->blocktype
== stProc
1116 || top_stack
->blocktype
== stStaticProc
)
1118 top_stack
->blocktype
= stNil
;
1122 top_stack
->blocktype
= stBlock
;
1123 b
= new_block (NON_FUNCTION_BLOCK
);
1124 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1125 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1126 top_stack
->cur_block
= b
;
1127 add_block (b
, top_stack
->cur_st
);
1130 case stEnd
: /* end (of anything) */
1131 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1133 /* Finished with type */
1134 top_stack
->cur_type
= 0;
1136 else if (sh
->sc
== scText
&&
1137 (top_stack
->blocktype
== stProc
||
1138 top_stack
->blocktype
== stStaticProc
))
1140 /* Finished with procedure */
1141 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1142 struct mdebug_extra_func_info
*e
;
1143 struct block
*b
= top_stack
->cur_block
;
1144 struct type
*ftype
= top_stack
->cur_type
;
1147 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1149 /* Make up special symbol to contain procedure specific info. */
1150 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1151 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1152 SYMBOL_CLASS (s
) = LOC_CONST
;
1153 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1154 e
= ((struct mdebug_extra_func_info
*)
1155 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1156 sizeof (struct mdebug_extra_func_info
)));
1157 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1158 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1159 e
->numargs
= top_stack
->numargs
;
1160 e
->pdr
.framereg
= -1;
1161 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1163 /* f77 emits proc-level with address bounds==[0,0],
1164 So look for such child blocks, and patch them. */
1165 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1167 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1169 if (BLOCK_SUPERBLOCK (b_bad
) == b
1170 && BLOCK_START (b_bad
) == top_stack
->procadr
1171 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1173 BLOCK_START (b_bad
) = BLOCK_START (b
);
1174 BLOCK_END (b_bad
) = BLOCK_END (b
);
1178 if (TYPE_NFIELDS (ftype
) <= 0)
1180 /* No parameter type information is recorded with the function's
1181 type. Set that from the type of the parameter symbols. */
1182 int nparams
= top_stack
->numargs
;
1188 struct dict_iterator iter
;
1190 TYPE_NFIELDS (ftype
) = nparams
;
1191 TYPE_FIELDS (ftype
) = (struct field
*)
1192 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1195 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1197 if (iparams
== nparams
)
1200 if (SYMBOL_IS_ARGUMENT (sym
))
1202 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1203 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1210 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1212 /* End of (code) block. The value of the symbol is the
1213 displacement from the procedure`s start address of the
1214 end of this block. */
1215 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1217 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1219 /* End of outermost block. Pop parse stack and ignore. The
1220 following stEnd of stProc will take care of the block. */
1223 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1225 /* End of file. Pop parse stack and ignore. Higher
1226 level code deals with this. */
1230 complaint (&symfile_complaints
,
1231 _("stEnd with storage class %d not handled"), sh
->sc
);
1233 pop_parse_stack (); /* Restore previous lexical context. */
1236 case stMember
: /* member of struct or union */
1237 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1238 FIELD_NAME (*f
) = name
;
1239 SET_FIELD_BITPOS (*f
, sh
->value
);
1241 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1242 &bitsize
, bigend
, name
);
1243 FIELD_BITSIZE (*f
) = bitsize
;
1246 case stIndirect
: /* forward declaration on Irix5 */
1247 /* Forward declarations from Irix5 cc are handled by cross_ref,
1251 case stTypedef
: /* type definition */
1252 found_ecoff_debugging_info
= 1;
1254 /* Typedefs for forward declarations and opaque structs from alpha cc
1255 are handled by cross_ref, skip them. */
1259 /* Parse the type or use the pending type. */
1260 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1261 if (pend
== (struct mdebug_pending
*) NULL
)
1263 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1264 add_pending (cur_fdr
, ext_sh
, t
);
1269 /* Mips cc puts out a typedef with the name of the struct for forward
1270 declarations. These should not go into the symbol table and
1271 TYPE_NAME should not be set for them.
1272 They can't be distinguished from an intentional typedef to
1273 the same name however:
1275 struct x { int ix; int jx; };
1279 struct xx {int ixx; int jxx; };
1280 generates a cross referencing stTypedef for x and xx.
1281 The user visible effect of this is that the type of a pointer
1282 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1283 The problem is fixed with alpha cc and Irix5 cc. */
1285 /* However if the typedef cross references to an opaque aggregate, it
1286 is safe to omit it from the symbol table. */
1288 if (has_opaque_xref (cur_fdr
, sh
))
1290 s
= new_symbol (name
);
1291 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1292 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1293 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1294 SYMBOL_TYPE (s
) = t
;
1295 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1297 /* Incomplete definitions of structs should not get a name. */
1298 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1299 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1300 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1301 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1303 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1304 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1306 /* If we are giving a name to a type such as "pointer to
1307 foo" or "function returning foo", we better not set
1308 the TYPE_NAME. If the program contains "typedef char
1309 *caddr_t;", we don't want all variables of type char
1310 * to print as caddr_t. This is not just a
1311 consequence of GDB's type management; CC and GCC (at
1312 least through version 2.4) both output variables of
1313 either type char * or caddr_t with the type
1314 refering to the stTypedef symbol for caddr_t. If a future
1315 compiler cleans this up it GDB is not ready for it
1316 yet, but if it becomes ready we somehow need to
1317 disable this check (without breaking the PCC/GCC2.4
1322 Fortunately, this check seems not to be necessary
1323 for anything except pointers or functions. */
1326 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1330 case stFile
: /* file name */
1331 push_parse_stack ();
1332 top_stack
->blocktype
= sh
->st
;
1335 /* I`ve never seen these for C */
1337 break; /* register relocation */
1339 break; /* forwarding address */
1341 break; /* constant */
1343 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1352 static const struct objfile_data
*basic_type_data
;
1354 static struct type
*
1355 basic_type (int bt
, struct objfile
*objfile
)
1357 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1358 struct type
**map_bt
= objfile_data (objfile
, basic_type_data
);
1366 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1367 btMax
, struct type
*);
1368 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1377 tp
= objfile_type (objfile
)->builtin_void
;
1381 tp
= init_type (TYPE_CODE_PTR
, 4, TYPE_FLAG_UNSIGNED
,
1383 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1387 tp
= init_type (TYPE_CODE_INT
, 1, 0,
1392 tp
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1393 "unsigned char", objfile
);
1397 tp
= init_type (TYPE_CODE_INT
, 2, 0,
1402 tp
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1403 "unsigned short", objfile
);
1407 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1412 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1413 "unsigned int", objfile
);
1417 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1422 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1423 "unsigned long", objfile
);
1427 tp
= init_type (TYPE_CODE_FLT
,
1428 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1433 tp
= init_type (TYPE_CODE_FLT
,
1434 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1439 tp
= init_type (TYPE_CODE_COMPLEX
,
1440 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1441 "complex", objfile
);
1442 TYPE_TARGET_TYPE (tp
) = basic_type (btFloat
, objfile
);
1446 tp
= init_type (TYPE_CODE_COMPLEX
,
1447 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1448 "double complex", objfile
);
1449 TYPE_TARGET_TYPE (tp
) = basic_type (btDouble
, objfile
);
1453 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1454 good? Would we be better off with TYPE_CODE_ERROR? Should
1455 TYPE_CODE_ERROR print things in hex if it knows the size? */
1456 tp
= init_type (TYPE_CODE_INT
,
1457 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1458 "fixed decimal", objfile
);
1462 tp
= init_type (TYPE_CODE_ERROR
,
1463 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1464 "floating decimal", objfile
);
1468 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1470 tp
= init_type (TYPE_CODE_STRING
, 1, 0,
1475 tp
= objfile_type (objfile
)->builtin_void
;
1479 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1484 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1485 "unsigned long", objfile
);
1489 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1490 "long long", objfile
);
1494 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1495 "unsigned long long", objfile
);
1499 tp
= init_type (TYPE_CODE_PTR
, 8, TYPE_FLAG_UNSIGNED
,
1501 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1505 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1510 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1511 "unsigned int", objfile
);
1523 /* Parse the type information provided in the raw AX entries for
1524 the symbol SH. Return the bitfield size in BS, in case.
1525 We must byte-swap the AX entries before we use them; BIGEND says whether
1526 they are big-endian or little-endian (from fh->fBigendian). */
1528 static struct type
*
1529 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1530 int bigend
, char *sym_name
)
1533 struct type
*tp
= 0;
1534 enum type_code type_code
= TYPE_CODE_UNDEF
;
1536 /* Handle undefined types, they have indexNil. */
1537 if (aux_index
== indexNil
)
1538 return basic_type (btInt
, mdebugread_objfile
);
1540 /* Handle corrupt aux indices. */
1541 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1543 index_complaint (sym_name
);
1544 return basic_type (btInt
, mdebugread_objfile
);
1548 /* Use aux as a type information record, map its basic type. */
1549 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1550 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1553 /* Cannot use builtin types -- build our own. */
1557 type_code
= TYPE_CODE_STRUCT
;
1560 type_code
= TYPE_CODE_UNION
;
1563 type_code
= TYPE_CODE_ENUM
;
1566 type_code
= TYPE_CODE_RANGE
;
1569 type_code
= TYPE_CODE_SET
;
1572 /* alpha cc -migrate uses this for typedefs. The true type will
1573 be obtained by crossreferencing below. */
1574 type_code
= TYPE_CODE_ERROR
;
1577 /* alpha cc uses this for typedefs. The true type will be
1578 obtained by crossreferencing below. */
1579 type_code
= TYPE_CODE_ERROR
;
1582 basic_type_complaint (t
->bt
, sym_name
);
1583 return basic_type (btInt
, mdebugread_objfile
);
1587 /* Move on to next aux. */
1592 int width
= AUX_GET_WIDTH (bigend
, ax
);
1594 /* Inhibit core dumps if TIR is corrupted. */
1595 if (bs
== (int *) NULL
)
1597 /* Alpha cc -migrate encodes char and unsigned char types
1598 as short and unsigned short types with a field width of 8.
1599 Enum types also have a field width which we ignore for now. */
1600 if (t
->bt
== btShort
&& width
== 8)
1601 tp
= basic_type (btChar
, mdebugread_objfile
);
1602 else if (t
->bt
== btUShort
&& width
== 8)
1603 tp
= basic_type (btUChar
, mdebugread_objfile
);
1604 else if (t
->bt
== btEnum
)
1607 complaint (&symfile_complaints
,
1608 _("can't handle TIR fBitfield for %s"),
1616 /* A btIndirect entry cross references to an aux entry containing
1618 if (t
->bt
== btIndirect
)
1625 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1627 if (rn
->rfd
== 0xfff)
1629 rf
= AUX_GET_ISYM (bigend
, ax
);
1637 complaint (&symfile_complaints
,
1638 _("unable to cross ref btIndirect for %s"), sym_name
);
1639 return basic_type (btInt
, mdebugread_objfile
);
1641 xref_fh
= get_rfd (fd
, rf
);
1642 xref_fd
= xref_fh
- debug_info
->fdr
;
1643 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1644 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1647 /* All these types really point to some (common) MIPS type
1648 definition, and only the type-qualifiers fully identify
1649 them. We'll make the same effort at sharing. */
1650 if (t
->bt
== btStruct
||
1654 /* btSet (I think) implies that the name is a tag name, not a typedef
1655 name. This apparently is a MIPS extension for C sets. */
1660 /* Try to cross reference this type, build new type on failure. */
1661 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1662 if (tp
== (struct type
*) NULL
)
1663 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1665 /* DEC c89 produces cross references to qualified aggregate types,
1666 dereference them. */
1667 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1668 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1669 tp
= TYPE_TARGET_TYPE (tp
);
1671 /* Make sure that TYPE_CODE(tp) has an expected type code.
1672 Any type may be returned from cross_ref if file indirect entries
1674 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1675 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1676 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1678 unexpected_type_code_complaint (sym_name
);
1682 /* Usually, TYPE_CODE(tp) is already type_code. The main
1683 exception is if we guessed wrong re struct/union/enum.
1684 But for struct vs. union a wrong guess is harmless, so
1685 don't complain(). */
1686 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1687 && type_code
!= TYPE_CODE_ENUM
)
1688 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1689 && type_code
== TYPE_CODE_ENUM
))
1691 bad_tag_guess_complaint (sym_name
);
1694 if (TYPE_CODE (tp
) != type_code
)
1696 TYPE_CODE (tp
) = type_code
;
1699 /* Do not set the tag name if it is a compiler generated tag name
1700 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1701 if (name
[0] == '.' || name
[0] == '\0')
1702 TYPE_TAG_NAME (tp
) = NULL
;
1703 else if (TYPE_TAG_NAME (tp
) == NULL
1704 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1706 = obsavestring (name
, strlen (name
),
1707 &mdebugread_objfile
->objfile_obstack
);
1711 /* All these types really point to some (common) MIPS type
1712 definition, and only the type-qualifiers fully identify
1713 them. We'll make the same effort at sharing.
1714 FIXME: We are not doing any guessing on range types. */
1715 if (t
->bt
== btRange
)
1719 /* Try to cross reference this type, build new type on failure. */
1720 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1721 if (tp
== (struct type
*) NULL
)
1722 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1724 /* Make sure that TYPE_CODE(tp) has an expected type code.
1725 Any type may be returned from cross_ref if file indirect entries
1727 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1729 unexpected_type_code_complaint (sym_name
);
1733 /* Usually, TYPE_CODE(tp) is already type_code. The main
1734 exception is if we guessed wrong re struct/union/enum. */
1735 if (TYPE_CODE (tp
) != type_code
)
1737 bad_tag_guess_complaint (sym_name
);
1738 TYPE_CODE (tp
) = type_code
;
1740 if (TYPE_NAME (tp
) == NULL
1741 || strcmp (TYPE_NAME (tp
), name
) != 0)
1742 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1743 &mdebugread_objfile
->objfile_obstack
);
1746 if (t
->bt
== btTypedef
)
1750 /* Try to cross reference this type, it should succeed. */
1751 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1752 if (tp
== (struct type
*) NULL
)
1754 complaint (&symfile_complaints
,
1755 _("unable to cross ref btTypedef for %s"), sym_name
);
1756 tp
= basic_type (btInt
, mdebugread_objfile
);
1760 /* Deal with range types. */
1761 if (t
->bt
== btRange
)
1763 TYPE_NFIELDS (tp
) = 0;
1764 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1765 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1766 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1768 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1772 /* Parse all the type qualifiers now. If there are more
1773 than 6 the game will continue in the next aux. */
1777 #define PARSE_TQ(tq) \
1778 if (t->tq != tqNil) \
1779 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1791 /* mips cc 2.x and gcc never put out continued aux entries. */
1795 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1799 /* Complain for illegal continuations due to corrupt aux entries. */
1801 complaint (&symfile_complaints
,
1802 _("illegal TIR continued for %s"), sym_name
);
1807 /* Make up a complex type from a basic one. Type is passed by
1808 reference in TPP and side-effected as necessary. The type
1809 qualifier TQ says how to handle the aux symbols at AX for
1810 the symbol SX we are currently analyzing. BIGEND says whether
1811 aux symbols are big-endian or little-endian.
1812 Returns the number of aux symbols we parsed. */
1815 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1821 /* Used in array processing. */
1832 t
= lookup_pointer_type (*tpp
);
1837 t
= lookup_function_type (*tpp
);
1844 /* Determine and record the domain type (type of index). */
1845 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1851 rf
= AUX_GET_ISYM (bigend
, ax
);
1854 fh
= get_rfd (fd
, rf
);
1856 indx
= parse_type (fh
- debug_info
->fdr
,
1857 debug_info
->external_aux
+ fh
->iauxBase
,
1858 id
, (int *) NULL
, bigend
, sym_name
);
1860 /* The bounds type should be an integer type, but might be anything
1861 else due to corrupt aux entries. */
1862 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1864 complaint (&symfile_complaints
,
1865 _("illegal array index type for %s, assuming int"),
1867 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1870 /* Get the bounds, and create the array type. */
1872 lower
= AUX_GET_DNLOW (bigend
, ax
);
1874 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1876 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1878 range
= create_range_type ((struct type
*) NULL
, indx
,
1881 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1883 /* We used to fill in the supplied array element bitsize
1884 here if the TYPE_LENGTH of the target type was zero.
1885 This happens for a `pointer to an array of anonymous structs',
1886 but in this case the array element bitsize is also zero,
1887 so nothing is gained.
1888 And we used to check the TYPE_LENGTH of the target type against
1889 the supplied array element bitsize.
1890 gcc causes a mismatch for `pointer to array of object',
1891 since the sdb directives it uses do not have a way of
1892 specifying the bitsize, but it does no harm (the
1893 TYPE_LENGTH should be correct) and we should be able to
1894 ignore the erroneous bitsize from the auxiliary entry safely.
1895 dbx seems to ignore it too. */
1897 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1898 if (TYPE_LENGTH (*tpp
) == 0)
1899 TYPE_TARGET_STUB (t
) = 1;
1905 /* Volatile -- currently ignored */
1909 /* Const -- currently ignored */
1913 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1919 /* Parse a procedure descriptor record PR. Note that the procedure is
1920 parsed _after_ the local symbols, now we just insert the extra
1921 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1922 already been placed in the procedure's main block. Note also that
1923 images that have been partially stripped (ld -x) have been deprived
1924 of local symbols, and we have to cope with them here. FIRST_OFF is
1925 the offset of the first procedure for this FDR; we adjust the
1926 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1927 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1928 in question, or NULL to use top_stack->cur_block. */
1930 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1933 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1934 struct partial_symtab
*pst
)
1936 struct symbol
*s
, *i
;
1940 /* Simple rule to find files linked "-x". */
1941 if (cur_fdr
->rss
== -1)
1945 /* Static procedure at address pr->adr. Sigh. */
1946 /* FIXME-32x64. assuming pr->adr fits in long. */
1947 complaint (&symfile_complaints
,
1948 _("can't handle PDR for static proc at 0x%lx"),
1949 (unsigned long) pr
->adr
);
1957 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1958 ((char *) debug_info
->external_ext
1960 * debug_swap
->external_ext_size
)),
1962 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1970 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1971 ((char *) debug_info
->external_sym
1972 + ((cur_fdr
->isymBase
+ pr
->isym
)
1973 * debug_swap
->external_sym_size
)),
1975 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1978 if (search_symtab
!= NULL
)
1981 /* This loses both in the case mentioned (want a static, find a global),
1982 but also if we are looking up a non-mangled name which happens to
1983 match the name of a mangled function. */
1984 /* We have to save the cur_fdr across the call to lookup_symbol.
1985 If the pdr is for a static function and if a global function with
1986 the same name exists, lookup_symbol will eventually read in the symtab
1987 for the global function and clobber cur_fdr. */
1988 FDR
*save_cur_fdr
= cur_fdr
;
1990 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1991 cur_fdr
= save_cur_fdr
;
1995 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
2001 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
2002 VAR_DOMAIN
, LOC_BLOCK
);
2006 b
= SYMBOL_BLOCK_VALUE (s
);
2010 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2014 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2015 s
= new_symbol (sh_name
);
2016 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2017 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2018 /* Donno its type, hope int is ok. */
2020 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2021 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2022 /* Won't have symbols for this one. */
2024 SYMBOL_BLOCK_VALUE (s
) = b
;
2025 BLOCK_FUNCTION (b
) = s
;
2026 BLOCK_START (b
) = pr
->adr
;
2027 /* BOUND used to be the end of procedure's text, but the
2028 argument is no longer passed in. */
2029 BLOCK_END (b
) = bound
;
2030 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2031 add_block (b
, top_stack
->cur_st
);
2035 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2039 struct mdebug_extra_func_info
*e
;
2041 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2044 /* GDB expects the absolute function start address for the
2045 procedure descriptor in e->pdr.adr.
2046 As the address in the procedure descriptor is usually relative,
2047 we would have to relocate e->pdr.adr with cur_fdr->adr and
2048 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2049 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2050 in shared libraries on some systems, and on other systems
2051 e->pdr.adr is sometimes offset by a bogus value.
2052 To work around these problems, we replace e->pdr.adr with
2053 the start address of the function. */
2054 e
->pdr
.adr
= BLOCK_START (b
);
2057 /* It would be reasonable that functions that have been compiled
2058 without debugging info have a btNil type for their return value,
2059 and functions that are void and are compiled with debugging info
2061 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2062 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2064 The glevel field in cur_fdr could be used to determine the presence
2065 of debugging info, but GCC doesn't always pass the -g switch settings
2066 to the assembler and GAS doesn't set the glevel field from the -g switch
2068 To work around these problems, the return value type of a TYPE_CODE_VOID
2069 function is adjusted accordingly if no debugging info was found in the
2070 compilation unit. */
2072 if (processing_gcc_compilation
== 0
2073 && found_ecoff_debugging_info
== 0
2074 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2075 SYMBOL_TYPE (s
) = objfile_type (pst
->objfile
)->nodebug_text_symbol
;
2078 /* Parse the external symbol ES. Just call parse_symbol() after
2079 making sure we know where the aux are for it.
2080 BIGEND says whether aux entries are big-endian or little-endian.
2082 This routine clobbers top_stack->cur_block and ->cur_st. */
2084 static void parse_external (EXTR
*, int, struct section_offsets
*,
2088 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2089 struct objfile
*objfile
)
2093 if (es
->ifd
!= ifdNil
)
2096 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2097 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2101 cur_fdr
= debug_info
->fdr
;
2105 /* Reading .o files */
2106 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2109 switch (es
->asym
.st
)
2112 /* These are generated for static symbols in .o files,
2133 /* FIXME: Turn this into a complaint? */
2135 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2136 what
, debug_info
->ssext
+ es
->asym
.iss
,
2137 fdr_name (cur_fdr
));
2141 switch (es
->asym
.st
)
2145 /* There is no need to parse the external procedure symbols.
2146 If they are from objects compiled without -g, their index will
2147 be indexNil, and the symbol definition from the minimal symbol
2148 is preferrable (yielding a function returning int instead of int).
2149 If the index points to a local procedure symbol, the local
2150 symbol already provides the correct type.
2151 Note that the index of the external procedure symbol points
2152 to the local procedure symbol in the local symbol table, and
2153 _not_ to the auxiliary symbol info. */
2157 /* Global common symbols are resolved by the runtime loader,
2159 if (SC_IS_COMMON (es
->asym
.sc
))
2162 /* Note that the case of a symbol with indexNil must be handled
2163 anyways by parse_symbol(). */
2164 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2165 bigend
, section_offsets
, objfile
);
2172 /* Parse the line number info for file descriptor FH into
2173 GDB's linetable LT. MIPS' encoding requires a little bit
2174 of magic to get things out. Note also that MIPS' line
2175 numbers can go back and forth, apparently we can live
2176 with that and do not need to reorder our linetables. */
2178 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2179 struct partial_symtab
*, CORE_ADDR
);
2182 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2183 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2185 unsigned char *base
;
2187 int delta
, count
, lineno
= 0;
2189 if (fh
->cbLine
== 0)
2192 /* Scan by procedure descriptors. */
2194 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2198 unsigned char *halt
;
2200 /* No code for this one. */
2201 if (pr
->iline
== ilineNil
||
2202 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2205 /* Determine start and end address of compressed line bytes for
2207 base
= debug_info
->line
+ fh
->cbLineOffset
;
2208 if (j
!= (fh
->cpd
- 1))
2209 halt
= base
+ pr
[1].cbLineOffset
;
2211 halt
= base
+ fh
->cbLine
;
2212 base
+= pr
->cbLineOffset
;
2214 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2216 l
= adr
>> 2; /* in words */
2217 for (lineno
= pr
->lnLow
; base
< halt
;)
2219 count
= *base
& 0x0f;
2220 delta
= *base
++ >> 4;
2225 delta
= (base
[0] << 8) | base
[1];
2226 if (delta
>= 0x8000)
2230 lineno
+= delta
; /* first delta is 0 */
2232 /* Complain if the line table overflows. Could happen
2233 with corrupt binaries. */
2234 if (lt
->nitems
>= maxlines
)
2236 complaint (&symfile_complaints
,
2237 _("guessed size of linetable for %s incorrectly"),
2241 k
= add_line (lt
, lineno
, l
, k
);
2248 function_outside_compilation_unit_complaint (const char *arg1
)
2250 complaint (&symfile_complaints
,
2251 _("function `%s' appears to be defined "
2252 "outside of all compilation units"),
2256 /* Use the STORAGE_CLASS to compute which section the given symbol
2257 belongs to, and then records this new minimal symbol. */
2260 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2261 enum minimal_symbol_type ms_type
, int storage_class
,
2262 struct objfile
*objfile
)
2265 asection
*bfd_section
;
2267 switch (storage_class
)
2270 section
= SECT_OFF_TEXT (objfile
);
2271 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".text");
2274 section
= SECT_OFF_DATA (objfile
);
2275 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".data");
2278 section
= SECT_OFF_BSS (objfile
);
2279 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".bss");
2282 section
= get_section_index (objfile
, ".sdata");
2283 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sdata");
2286 section
= get_section_index (objfile
, ".sbss");
2287 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sbss");
2290 section
= get_section_index (objfile
, ".rdata");
2291 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rdata");
2294 section
= get_section_index (objfile
, ".init");
2295 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".init");
2298 section
= get_section_index (objfile
, ".xdata");
2299 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".xdata");
2302 section
= get_section_index (objfile
, ".pdata");
2303 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".pdata");
2306 section
= get_section_index (objfile
, ".fini");
2307 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".fini");
2310 section
= get_section_index (objfile
, ".rconst");
2311 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rconst");
2315 section
= get_section_index (objfile
, ".tlsdata");
2316 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsdata");
2321 section
= get_section_index (objfile
, ".tlsbss");
2322 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsbss");
2326 /* This kind of symbol is not associated to a section. */
2331 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2332 section
, bfd_section
, objfile
);
2335 /* Master parsing procedure for first-pass reading of file symbols
2336 into a partial_symtab. */
2339 parse_partial_symbols (struct objfile
*objfile
)
2341 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2342 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2343 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2344 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2345 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2346 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2347 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2349 HDRR
*hdr
= &debug_info
->symbolic_header
;
2350 /* Running pointers */
2358 struct partial_symtab
*pst
;
2359 int textlow_not_set
= 1;
2360 int past_first_source_file
= 0;
2362 /* List of current psymtab's include files. */
2363 char **psymtab_include_list
;
2364 int includes_allocated
;
2367 struct pst_map
*fdr_to_pst
;
2368 /* Index within current psymtab dependency list. */
2369 struct partial_symtab
**dependency_list
;
2370 int dependencies_used
, dependencies_allocated
;
2371 struct cleanup
*old_chain
;
2373 enum language prev_language
;
2374 asection
*text_sect
;
2375 int relocatable
= 0;
2377 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2378 the shared libraries are prelinked at a high memory address.
2379 We have to adjust the start address of the object file for this case,
2380 by setting it to the start address of the first procedure in the file.
2381 But we should do no adjustments if we are debugging a .o file, where
2382 the text section (and fh->adr) really starts at zero. */
2383 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2384 if (text_sect
!= NULL
2385 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2388 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2389 sizeof (EXTR
) * hdr
->iextMax
);
2391 includes_allocated
= 30;
2393 psymtab_include_list
= (char **) alloca (includes_allocated
*
2395 next_symbol_text_func
= mdebug_next_symbol_text
;
2397 dependencies_allocated
= 30;
2398 dependencies_used
= 0;
2400 (struct partial_symtab
**) alloca (dependencies_allocated
*
2401 sizeof (struct partial_symtab
*));
2403 last_source_file
= NULL
;
2408 * Only parse the Local and External symbols, and the Relative FDR.
2409 * Fixup enough of the loader symtab to be able to use it.
2410 * Allocate space only for the file's portions we need to
2415 max_glevel
= MIN_GLEVEL
;
2417 /* Allocate the map FDR -> PST.
2418 Minor hack: -O3 images might claim some global data belongs
2419 to FDR -1. We`ll go along with that. */
2420 fdr_to_pst
= (struct pst_map
*)
2421 xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2422 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2425 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2427 fdr_to_pst
[-1].pst
= pst
;
2431 /* Allocate the global pending list. */
2433 ((struct mdebug_pending
**)
2434 obstack_alloc (&objfile
->objfile_obstack
,
2435 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2436 memset (pending_list
, 0,
2437 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2439 /* Pass 0 over external syms: swap them in. */
2440 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2441 make_cleanup (xfree
, ext_block
);
2443 ext_out
= (char *) debug_info
->external_ext
;
2444 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2446 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2447 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2449 /* Pass 1 over external syms: Presize and partition the list. */
2451 ext_in_end
= ext_in
+ hdr
->iextMax
;
2452 for (; ext_in
< ext_in_end
; ext_in
++)
2454 /* See calls to complain below. */
2455 if (ext_in
->ifd
>= -1
2456 && ext_in
->ifd
< hdr
->ifdMax
2457 && ext_in
->asym
.iss
>= 0
2458 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2459 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2462 /* Pass 1.5 over files: partition out global symbol space. */
2464 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2466 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2467 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2468 fdr_to_pst
[f_idx
].n_globals
= 0;
2473 For ECOFF in ELF, we skip the creation of the minimal symbols.
2474 The ECOFF symbols should be a subset of the Elf symbols, and the
2475 section information of the elf symbols will be more accurate.
2476 FIXME! What about Irix 5's native linker?
2478 By default, Elf sections which don't exist in ECOFF
2479 get put in ECOFF's absolute section by the gnu linker.
2480 Since absolute sections don't get relocated, we
2481 end up calculating an address different from that of
2482 the symbol's minimal symbol (created earlier from the
2485 To fix this, either :
2486 1) don't create the duplicate symbol
2487 (assumes ECOFF symtab is a subset of the ELF symtab;
2488 assumes no side-effects result from ignoring ECOFF symbol)
2489 2) create it, only if lookup for existing symbol in ELF's minimal
2492 assumes no side-effects result from ignoring ECOFF symbol)
2493 3) create it, but lookup ELF's minimal symbol and use it's section
2494 during relocation, then modify "uniqify" phase to merge and
2495 eliminate the duplicate symbol
2496 (highly inefficient)
2498 I've implemented #1 here...
2499 Skip the creation of the minimal symbols based on the ECOFF
2502 /* Pass 2 over external syms: fill in external symbols. */
2504 ext_in_end
= ext_in
+ hdr
->iextMax
;
2505 for (; ext_in
< ext_in_end
; ext_in
++)
2507 enum minimal_symbol_type ms_type
= mst_text
;
2508 CORE_ADDR svalue
= ext_in
->asym
.value
;
2510 /* The Irix 5 native tools seem to sometimes generate bogus
2511 external symbols. */
2512 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2514 complaint (&symfile_complaints
,
2515 _("bad ifd for external symbol: %d (max %ld)"),
2516 ext_in
->ifd
, hdr
->ifdMax
);
2519 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2521 complaint (&symfile_complaints
,
2522 _("bad iss for external symbol: %ld (max %ld)"),
2523 ext_in
->asym
.iss
, hdr
->issExtMax
);
2527 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2528 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2531 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2535 /* Pass 3 over files, over local syms: fill in static symbols. */
2536 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2538 /* Process ECOFF Symbol Types and Storage Classes. */
2539 switch (ext_in
->asym
.st
)
2542 /* Beginnning of Procedure */
2543 svalue
+= ANOFFSET (objfile
->section_offsets
,
2544 SECT_OFF_TEXT (objfile
));
2547 /* Load time only static procs */
2548 ms_type
= mst_file_text
;
2549 svalue
+= ANOFFSET (objfile
->section_offsets
,
2550 SECT_OFF_TEXT (objfile
));
2553 /* External symbol */
2554 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2556 /* The value of a common symbol is its size, not its address.
2560 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2563 svalue
+= ANOFFSET (objfile
->section_offsets
,
2564 SECT_OFF_DATA (objfile
));
2566 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2569 svalue
+= ANOFFSET (objfile
->section_offsets
,
2570 SECT_OFF_BSS (objfile
));
2572 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2575 svalue
+= ANOFFSET (objfile
->section_offsets
,
2576 get_section_index (objfile
, ".sbss"));
2584 /* On certain platforms, some extra label symbols can be
2585 generated by the linker. One possible usage for this kind
2586 of symbols is to represent the address of the begining of a
2587 given section. For instance, on Tru64 5.1, the address of
2588 the _ftext label is the start address of the .text section.
2590 The storage class of these symbols is usually directly
2591 related to the section to which the symbol refers. For
2592 instance, on Tru64 5.1, the storage class for the _fdata
2593 label is scData, refering to the .data section.
2595 It is actually possible that the section associated to the
2596 storage class of the label does not exist. On True64 5.1
2597 for instance, the libm.so shared library does not contain
2598 any .data section, although it contains a _fpdata label
2599 which storage class is scData... Since these symbols are
2600 usually useless for the debugger user anyway, we just
2601 discard these symbols. */
2603 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2605 if (objfile
->sect_index_text
== -1)
2608 ms_type
= mst_file_text
;
2609 svalue
+= ANOFFSET (objfile
->section_offsets
,
2610 SECT_OFF_TEXT (objfile
));
2612 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2614 if (objfile
->sect_index_data
== -1)
2617 ms_type
= mst_file_data
;
2618 svalue
+= ANOFFSET (objfile
->section_offsets
,
2619 SECT_OFF_DATA (objfile
));
2621 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2623 if (objfile
->sect_index_bss
== -1)
2626 ms_type
= mst_file_bss
;
2627 svalue
+= ANOFFSET (objfile
->section_offsets
,
2628 SECT_OFF_BSS (objfile
));
2630 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2632 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2634 if (sbss_sect_index
== -1)
2637 ms_type
= mst_file_bss
;
2638 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2645 /* The alpha has the section start addresses in stLocal symbols
2646 whose name starts with a `.'. Skip those but complain for all
2647 other stLocal symbols.
2648 Irix6 puts the section start addresses in stNil symbols, skip
2654 ms_type
= mst_unknown
;
2655 unknown_ext_complaint (name
);
2657 if (!ECOFF_IN_ELF (cur_bfd
))
2658 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2662 /* Pass 3 over files, over local syms: fill in static symbols. */
2663 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2665 struct partial_symtab
*save_pst
;
2669 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2673 fdr_to_pst
[f_idx
].pst
= NULL
;
2677 /* Determine the start address for this object file from the
2678 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2682 if (relocatable
|| textlow
!= 0)
2683 textlow
+= ANOFFSET (objfile
->section_offsets
,
2684 SECT_OFF_TEXT (objfile
));
2688 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2691 objfile
->global_psymbols
.next
,
2692 objfile
->static_psymbols
.next
);
2693 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2694 sizeof (struct symloc
));
2695 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2698 FDR_IDX (pst
) = f_idx
;
2699 CUR_BFD (pst
) = cur_bfd
;
2700 DEBUG_SWAP (pst
) = debug_swap
;
2701 DEBUG_INFO (pst
) = debug_info
;
2702 PENDING_LIST (pst
) = pending_list
;
2704 /* The way to turn this into a symtab is to call... */
2705 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2707 /* Set up language for the pst.
2708 The language from the FDR is used if it is unambigious (e.g. cfront
2709 with native cc and g++ will set the language to C).
2710 Otherwise we have to deduce the language from the filename.
2711 Native ecoff has every header file in a separate FDR, so
2712 deduce_language_from_filename will return language_unknown for
2713 a header file, which is not what we want.
2714 But the FDRs for the header files are after the FDR for the source
2715 file, so we can assign the language of the source file to the
2716 following header files. Then we save the language in the private
2717 pst data so that we can reuse it when building symtabs. */
2718 prev_language
= psymtab_language
;
2722 case langCplusplusV2
:
2723 psymtab_language
= language_cplus
;
2726 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2729 if (psymtab_language
== language_unknown
)
2730 psymtab_language
= prev_language
;
2731 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2733 pst
->texthigh
= pst
->textlow
;
2735 /* For stabs-in-ecoff files, the second symbol must be @stab.
2736 This symbol is emitted by mips-tfile to signal that the
2737 current object file uses encapsulated stabs instead of mips
2738 ecoff for local symbols. (It is the second symbol because
2739 the first symbol is the stFile used to signal the start of a
2741 processing_gcc_compilation
= 0;
2744 (*swap_sym_in
) (cur_bfd
,
2745 ((char *) debug_info
->external_sym
2746 + (fh
->isymBase
+ 1) * external_sym_size
),
2748 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2750 processing_gcc_compilation
= 2;
2753 if (processing_gcc_compilation
!= 0)
2755 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2760 (*swap_sym_in
) (cur_bfd
,
2761 (((char *) debug_info
->external_sym
)
2762 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2764 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2765 if (!ECOFF_IS_STAB (&sh
))
2767 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2772 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2773 SECT_OFF_TEXT (objfile
));
2774 if (sh
.st
== stStaticProc
)
2776 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2777 record_minimal_symbol (namestring
, sh
.value
,
2778 mst_file_text
, sh
.sc
,
2781 procaddr
= sh
.value
;
2783 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2784 (debug_info
->external_aux
2787 (*swap_sym_in
) (cur_bfd
,
2788 ((char *) debug_info
->external_sym
2789 + ((fh
->isymBase
+ isym
- 1)
2790 * external_sym_size
)),
2794 CORE_ADDR high
= procaddr
+ sh
.value
;
2796 /* Kludge for Irix 5.2 zero fh->adr. */
2798 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2799 pst
->textlow
= procaddr
;
2800 if (high
> pst
->texthigh
)
2801 pst
->texthigh
= high
;
2804 else if (sh
.st
== stStatic
)
2819 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2820 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2821 SECT_OFF_DATA (objfile
));
2822 record_minimal_symbol (namestring
, sh
.value
,
2823 mst_file_data
, sh
.sc
,
2828 /* FIXME! Shouldn't this use cases for bss,
2829 then have the default be abs? */
2830 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2831 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2832 SECT_OFF_BSS (objfile
));
2833 record_minimal_symbol (namestring
, sh
.value
,
2834 mst_file_bss
, sh
.sc
,
2841 /* Handle stabs continuation. */
2843 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2844 int len
= strlen (stabstring
);
2846 while (stabstring
[len
- 1] == '\\')
2849 char *stabstring1
= stabstring
;
2853 /* Ignore continuation char from 1st string. */
2856 /* Read next stabstring. */
2858 (*swap_sym_in
) (cur_bfd
,
2859 (((char *) debug_info
->external_sym
)
2860 + (fh
->isymBase
+ cur_sdx
)
2861 * external_sym_size
),
2863 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2864 len2
= strlen (stabstring2
);
2866 /* Concatinate stabstring2 with stabstring1. */
2868 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2869 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2872 stabstring
= xmalloc (len
+ len2
+ 1);
2873 strcpy (stabstring
, stabstring1
);
2875 strcpy (stabstring
+ len
, stabstring2
);
2883 /* Standard, external, non-debugger, symbols. */
2885 case N_TEXT
| N_EXT
:
2886 case N_NBTEXT
| N_EXT
:
2887 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2888 SECT_OFF_TEXT (objfile
));
2891 case N_DATA
| N_EXT
:
2892 case N_NBDATA
| N_EXT
:
2893 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2894 SECT_OFF_DATA (objfile
));
2899 case N_NBBSS
| N_EXT
:
2900 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2901 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2902 SECT_OFF_BSS (objfile
));
2909 /* Standard, local, non-debugger, symbols. */
2913 /* We need to be able to deal with both N_FN or
2914 N_TEXT, because we have no way of knowing
2915 whether the sys-supplied ld or GNU ld was used
2916 to make the executable. Sequents throw in
2917 another wrinkle -- they renumbered N_FN. */
2925 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2926 SECT_OFF_DATA (objfile
));
2929 case N_UNDF
| N_EXT
:
2930 continue; /* Just undefined, not COMMON. */
2935 /* Lots of symbol types we can just ignore. */
2942 /* Keep going . . . */
2945 * Special symbol types for GNU
2948 case N_INDR
| N_EXT
:
2950 case N_SETA
| N_EXT
:
2952 case N_SETT
| N_EXT
:
2954 case N_SETD
| N_EXT
:
2956 case N_SETB
| N_EXT
:
2967 static int prev_so_symnum
= -10;
2968 static int first_so_symnum
;
2970 int prev_textlow_not_set
;
2972 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
,
2973 SECT_OFF_TEXT (objfile
));
2975 prev_textlow_not_set
= textlow_not_set
;
2977 /* A zero value is probably an indication for the
2978 SunPRO 3.0 compiler. end_psymtab explicitly tests
2979 for zero, so don't relocate it. */
2982 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2984 textlow_not_set
= 1;
2988 textlow_not_set
= 0;
2990 past_first_source_file
= 1;
2992 if (prev_so_symnum
!= symnum
- 1)
2993 { /* Here if prev stab wasn't N_SO. */
2994 first_so_symnum
= symnum
;
2998 pst
= (struct partial_symtab
*) 0;
3000 dependencies_used
= 0;
3004 prev_so_symnum
= symnum
;
3006 /* End the current partial symtab and start a
3009 /* SET_NAMESTRING ();*/
3010 namestring
= stabstring
;
3012 /* Null name means end of .o file. Don't start a new
3014 if (*namestring
== '\000')
3017 /* Some compilers (including gcc) emit a pair of
3018 initial N_SOs. The first one is a directory name;
3019 the second the file name. If pst exists, is
3020 empty, and has a filename ending in '/', we assume
3021 the previous N_SO was a directory name. */
3022 p
= lbasename (namestring
);
3023 if (p
!= namestring
&& *p
== '\000')
3024 continue; /* Simply ignore directory
3027 /* Some other compilers (C++ ones in particular) emit
3028 useless SOs for non-existant .c files. We ignore
3029 all subsequent SOs that immediately follow the
3042 enum language tmp_language
;
3044 /* Mark down an include file in the current psymtab. */
3046 /* SET_NAMESTRING (); */
3047 namestring
= stabstring
;
3050 = deduce_language_from_filename (namestring
);
3052 /* Only change the psymtab's language if we've
3053 learned something useful (eg. tmp_language is not
3054 language_unknown). In addition, to match what
3055 start_subfile does, never change from C++ to
3057 if (tmp_language
!= language_unknown
3058 && (tmp_language
!= language_c
3059 || psymtab_language
!= language_cplus
))
3060 psymtab_language
= tmp_language
;
3062 /* In C++, one may expect the same filename to come
3063 round many times, when code is coming alternately
3064 from the main file and from inline functions in
3065 other files. So I check to see if this is a file
3066 we've seen before -- either the main source file,
3067 or a previously included file.
3069 This seems to be a lot of time to be spending on
3070 N_SOL, but things like "break c-exp.y:435" need to
3071 work (I suppose the psymtab_include_list could be
3072 hashed or put in a binary tree, if profiling shows
3073 this is a major hog). */
3074 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3080 for (i
= 0; i
< includes_used
; i
++)
3081 if (filename_cmp (namestring
,
3082 psymtab_include_list
[i
]) == 0)
3091 psymtab_include_list
[includes_used
++] = namestring
;
3092 if (includes_used
>= includes_allocated
)
3094 char **orig
= psymtab_include_list
;
3096 psymtab_include_list
= (char **)
3097 alloca ((includes_allocated
*= 2) *
3099 memcpy (psymtab_include_list
, orig
,
3100 includes_used
* sizeof (char *));
3104 case N_LSYM
: /* Typedef or automatic variable. */
3105 case N_STSYM
: /* Data seg var -- static */
3106 case N_LCSYM
: /* BSS " */
3107 case N_ROSYM
: /* Read-only data seg var -- static. */
3108 case N_NBSTS
: /* Gould nobase. */
3109 case N_NBLCS
: /* symbols. */
3111 case N_GSYM
: /* Global (extern) variable; can be
3112 data or bss (sigh FIXME). */
3114 /* Following may probably be ignored; I'll leave them here
3115 for now (until I do Pascal and Modula 2 extensions). */
3117 case N_PC
: /* I may or may not need this; I
3119 case N_M2C
: /* I suspect that I can ignore this
3121 case N_SCOPE
: /* Same. */
3123 /* SET_NAMESTRING (); */
3124 namestring
= stabstring
;
3125 p
= (char *) strchr (namestring
, ':');
3127 continue; /* Not a debugging symbol. */
3131 /* Main processing section for debugging symbols which
3132 the initial read through the symbol tables needs to
3133 worry about. If we reach this point, the symbol
3134 which we are considering is definitely one we are
3135 interested in. p must also contain the (valid)
3136 index into the namestring which indicates the
3137 debugging type symbol. */
3142 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3143 SECT_OFF_DATA (objfile
));
3145 if (gdbarch_static_transform_name_p (gdbarch
))
3146 namestring
= gdbarch_static_transform_name
3147 (gdbarch
, namestring
);
3149 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3150 VAR_DOMAIN
, LOC_STATIC
,
3151 &objfile
->static_psymbols
,
3153 psymtab_language
, objfile
);
3156 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3157 SECT_OFF_DATA (objfile
));
3158 /* The addresses in these entries are reported
3159 to be wrong. See the code that reads 'G's
3161 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3162 VAR_DOMAIN
, LOC_STATIC
,
3163 &objfile
->global_psymbols
,
3165 psymtab_language
, objfile
);
3169 /* When a 'T' entry is defining an anonymous enum, it
3170 may have a name which is the empty string, or a
3171 single space. Since they're not really defining a
3172 symbol, those shouldn't go in the partial symbol
3173 table. We do pick up the elements of such enums at
3174 'check_enum:', below. */
3175 if (p
>= namestring
+ 2
3176 || (p
== namestring
+ 1
3177 && namestring
[0] != ' '))
3179 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3180 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3181 &objfile
->static_psymbols
,
3183 psymtab_language
, objfile
);
3186 /* Also a typedef with the same name. */
3187 add_psymbol_to_list (namestring
,
3189 VAR_DOMAIN
, LOC_TYPEDEF
,
3190 &objfile
->static_psymbols
,
3199 if (p
!= namestring
) /* a name is there, not
3202 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3203 VAR_DOMAIN
, LOC_TYPEDEF
,
3204 &objfile
->static_psymbols
,
3206 psymtab_language
, objfile
);
3209 /* If this is an enumerated type, we need to add
3210 all the enum constants to the partial symbol
3211 table. This does not cover enums without names,
3212 e.g. "enum {a, b} c;" in C, but fortunately
3213 those are rare. There is no way for GDB to find
3214 those from the enum type without spending too
3215 much time on it. Thus to solve this problem,
3216 the compiler needs to put out the enum in a
3217 nameless type. GCC2 does this. */
3219 /* We are looking for something of the form
3220 <name> ":" ("t" | "T") [<number> "="] "e"
3221 {<constant> ":" <value> ","} ";". */
3223 /* Skip over the colon and the 't' or 'T'. */
3225 /* This type may be given a number. Also, numbers
3226 can come in pairs like (0,26). Skip over it. */
3227 while ((*p
>= '0' && *p
<= '9')
3228 || *p
== '(' || *p
== ',' || *p
== ')'
3234 /* The aix4 compiler emits extra crud before
3238 /* Skip over the type (?). */
3242 /* Skip over the colon. */
3246 /* We have found an enumerated type. */
3247 /* According to comments in read_enum_type
3248 a comma could end it instead of a semicolon.
3249 I don't know where that happens.
3251 while (*p
&& *p
!= ';' && *p
!= ',')
3255 /* Check for and handle cretinous dbx
3256 symbol name continuation! */
3257 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3258 p
= next_symbol_text (objfile
);
3260 /* Point to the character after the name
3261 of the enum constant. */
3262 for (q
= p
; *q
&& *q
!= ':'; q
++)
3264 /* Note that the value doesn't matter for
3265 enum constants in psymtabs, just in
3267 add_psymbol_to_list (p
, q
- p
, 1,
3268 VAR_DOMAIN
, LOC_CONST
,
3269 &objfile
->static_psymbols
,
3270 0, 0, psymtab_language
,
3272 /* Point past the name. */
3274 /* Skip over the value. */
3275 while (*p
&& *p
!= ',')
3277 /* Advance past the comma. */
3284 /* Constant, e.g. from "const" in Pascal. */
3285 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3286 VAR_DOMAIN
, LOC_CONST
,
3287 &objfile
->static_psymbols
,
3288 sh
.value
, 0, psymtab_language
,
3295 int name_len
= p
- namestring
;
3296 char *name
= xmalloc (name_len
+ 1);
3298 memcpy (name
, namestring
, name_len
);
3299 name
[name_len
] = '\0';
3300 function_outside_compilation_unit_complaint (name
);
3303 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3304 SECT_OFF_TEXT (objfile
));
3305 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3306 VAR_DOMAIN
, LOC_BLOCK
,
3307 &objfile
->static_psymbols
,
3309 psymtab_language
, objfile
);
3312 /* Global functions were ignored here, but now they
3313 are put into the global psymtab like one would
3314 expect. They're also in the minimal symbol
3319 int name_len
= p
- namestring
;
3320 char *name
= xmalloc (name_len
+ 1);
3322 memcpy (name
, namestring
, name_len
);
3323 name
[name_len
] = '\0';
3324 function_outside_compilation_unit_complaint (name
);
3327 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3328 SECT_OFF_TEXT (objfile
));
3329 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3330 VAR_DOMAIN
, LOC_BLOCK
,
3331 &objfile
->global_psymbols
,
3333 psymtab_language
, objfile
);
3336 /* Two things show up here (hopefully); static
3337 symbols of local scope (static used inside
3338 braces) or extensions of structure symbols. We
3353 case '#': /* For symbol identification (used
3358 /* It is a C++ nested symbol. We don't need to
3359 record it (I don't think); if we try to look up
3360 foo::bar::baz, then symbols for the symtab
3361 containing foo should get read in, I think. */
3362 /* Someone says sun cc puts out symbols like
3363 /foo/baz/maclib::/usr/local/bin/maclib,
3364 which would get here with a symbol type of ':'. */
3368 /* Unexpected symbol descriptor. The second and
3369 subsequent stabs of a continued stab can show up
3370 here. The question is whether they ever can
3371 mimic a normal stab--it would be nice if not,
3372 since we certainly don't want to spend the time
3373 searching to the end of every string looking for
3376 complaint (&symfile_complaints
,
3377 _("unknown symbol descriptor `%c'"), p
[1]);
3379 /* Ignore it; perhaps it is an extension that we don't
3388 /* Solaris 2 end of module, finish current partial
3389 symbol table. END_PSYMTAB will set
3390 pst->texthigh to the proper value, which is
3391 necessary if a module compiled without
3392 debugging info follows this module. */
3394 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3396 pst
= (struct partial_symtab
*) 0;
3398 dependencies_used
= 0;
3403 if (sh
.value
> save_pst
->texthigh
)
3404 save_pst
->texthigh
= sh
.value
;
3409 case N_SSYM
: /* Claim: Structure or union
3410 element. Hopefully, I can
3412 case N_ENTRY
: /* Alternate entry point; can
3414 case N_MAIN
: /* Can definitely ignore this. */
3415 case N_CATCH
: /* These are GNU C++ extensions. */
3416 case N_EHDECL
: /* that can safely be ignored here. */
3426 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3427 case N_DEFD
: /* GNU Modula-2 */
3428 case N_ALIAS
: /* SunPro F77: alias name, ignore
3431 case N_OBJ
: /* Useless types from Solaris. */
3433 /* These symbols aren't interesting; don't worry about
3439 /* If we haven't found it yet, ignore it. It's
3440 probably some new type we don't know about yet. */
3441 complaint (&symfile_complaints
,
3442 _("unknown symbol type %s"),
3443 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3447 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3450 /* end - Handle continuation */
3455 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3458 enum address_class
class;
3460 (*swap_sym_in
) (cur_bfd
,
3461 ((char *) debug_info
->external_sym
3462 + ((fh
->isymBase
+ cur_sdx
)
3463 * external_sym_size
)),
3466 if (ECOFF_IS_STAB (&sh
))
3472 /* Non absolute static symbols go into the minimal table. */
3473 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3474 || (sh
.index
== indexNil
3475 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3477 /* FIXME, premature? */
3482 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3488 /* The value of a stEnd symbol is the displacement from the
3489 corresponding start symbol value, do not relocate it. */
3491 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3492 SECT_OFF_TEXT (objfile
));
3499 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3500 SECT_OFF_DATA (objfile
));
3504 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3505 SECT_OFF_BSS (objfile
));
3516 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3518 SECT_OFF_TEXT (objfile
),
3524 /* Ignore all parameter symbol records. */
3525 if (sh
.index
>= hdr
->iauxMax
)
3527 /* Should not happen, but does when cross-compiling
3528 with the MIPS compiler. FIXME -- pull later. */
3529 index_complaint (name
);
3530 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3533 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3534 (debug_info
->external_aux
3538 if (new_sdx
<= cur_sdx
)
3540 /* This should not happen either... FIXME. */
3541 complaint (&symfile_complaints
,
3542 _("bad proc end in aux found from symbol %s"),
3544 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3547 /* For stProc symbol records, we need to check the
3548 storage class as well, as only (stProc, scText)
3549 entries represent "real" procedures - See the
3550 Compaq document titled "Object File / Symbol Table
3551 Format Specification" for more information. If the
3552 storage class is not scText, we discard the whole
3553 block of symbol records for this stProc. */
3554 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3557 /* Usually there is a local and a global stProc symbol
3558 for a function. This means that the function name
3559 has already been entered into the mimimal symbol table
3560 while processing the global symbols in pass 2 above.
3561 One notable exception is the PROGRAM name from
3562 f77 compiled executables, it is only put out as
3563 local stProc symbol, and a global MAIN__ stProc symbol
3564 points to it. It doesn't matter though, as gdb is
3565 still able to find the PROGRAM name via the partial
3566 symbol table, and the MAIN__ symbol via the minimal
3568 if (sh
.st
== stProc
)
3569 add_psymbol_to_list (name
, strlen (name
), 1,
3570 VAR_DOMAIN
, LOC_BLOCK
,
3571 &objfile
->global_psymbols
,
3572 0, sh
.value
, psymtab_language
, objfile
);
3574 add_psymbol_to_list (name
, strlen (name
), 1,
3575 VAR_DOMAIN
, LOC_BLOCK
,
3576 &objfile
->static_psymbols
,
3577 0, sh
.value
, psymtab_language
, objfile
);
3579 procaddr
= sh
.value
;
3582 (*swap_sym_in
) (cur_bfd
,
3583 ((char *) debug_info
->external_sym
3584 + ((fh
->isymBase
+ cur_sdx
- 1)
3585 * external_sym_size
)),
3590 /* Kludge for Irix 5.2 zero fh->adr. */
3592 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3593 pst
->textlow
= procaddr
;
3595 high
= procaddr
+ sh
.value
;
3596 if (high
> pst
->texthigh
)
3597 pst
->texthigh
= high
;
3600 case stStatic
: /* Variable */
3601 if (SC_IS_DATA (sh
.sc
))
3602 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3604 SECT_OFF_DATA (objfile
),
3608 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3610 SECT_OFF_BSS (objfile
),
3616 case stIndirect
: /* Irix5 forward declaration */
3617 /* Skip forward declarations from Irix5 cc. */
3620 case stTypedef
: /* Typedef */
3621 /* Skip typedefs for forward declarations and opaque
3622 structs from alpha and mips cc. */
3623 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3625 class = LOC_TYPEDEF
;
3628 case stConstant
: /* Constant decl */
3635 case stBlock
: /* { }, str, un, enum */
3636 /* Do not create a partial symbol for cc unnamed aggregates
3637 and gcc empty aggregates. */
3638 if ((sh
.sc
== scInfo
3639 || SC_IS_COMMON (sh
.sc
))
3641 && sh
.index
!= cur_sdx
+ 2)
3643 add_psymbol_to_list (name
, strlen (name
), 1,
3644 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3645 &objfile
->static_psymbols
,
3647 psymtab_language
, objfile
);
3649 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3651 /* Skip over the block. */
3653 if (new_sdx
<= cur_sdx
)
3655 /* This happens with the Ultrix kernel. */
3656 complaint (&symfile_complaints
,
3657 _("bad aux index at block symbol %s"), name
);
3658 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3663 case stFile
: /* File headers */
3664 case stLabel
: /* Labels */
3665 case stEnd
: /* Ends of files */
3668 case stLocal
: /* Local variables */
3669 /* Normally these are skipped because we skip over
3670 all blocks we see. However, these can occur
3671 as visible symbols in a .h file that contains code. */
3675 /* Both complaints are valid: one gives symbol name,
3676 the other the offending symbol type. */
3677 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3679 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3683 /* Use this gdb symbol. */
3684 add_psymbol_to_list (name
, strlen (name
), 1,
3686 &objfile
->static_psymbols
,
3687 0, sh
.value
, psymtab_language
, objfile
);
3689 cur_sdx
++; /* Go to next file symbol. */
3692 /* Now do enter the external symbols. */
3693 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3694 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3695 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3696 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3697 for (; --cur_sdx
>= 0; ext_ptr
++)
3699 enum address_class
class;
3704 if (ext_ptr
->ifd
!= f_idx
)
3705 internal_error (__FILE__
, __LINE__
,
3706 _("failed internal consistency check"));
3707 psh
= &ext_ptr
->asym
;
3709 /* Do not add undefined symbols to the partial symbol table. */
3710 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3713 svalue
= psh
->value
;
3718 svalue
+= ANOFFSET (objfile
->section_offsets
,
3719 SECT_OFF_TEXT (objfile
));
3726 svalue
+= ANOFFSET (objfile
->section_offsets
,
3727 SECT_OFF_DATA (objfile
));
3731 svalue
+= ANOFFSET (objfile
->section_offsets
,
3732 SECT_OFF_BSS (objfile
));
3739 /* These are generated for static symbols in .o files,
3744 /* External procedure symbols have been entered
3745 into the minimal symbol table in pass 2 above.
3746 Ignore them, as parse_external will ignore them too. */
3752 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3753 /* Fall through, pretend it's global. */
3755 /* Global common symbols are resolved by the runtime loader,
3757 if (SC_IS_COMMON (psh
->sc
))
3763 name
= debug_info
->ssext
+ psh
->iss
;
3764 add_psymbol_to_list (name
, strlen (name
), 1,
3766 &objfile
->global_psymbols
,
3768 psymtab_language
, objfile
);
3772 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3773 empty and put on the free list. */
3774 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3775 psymtab_include_list
, includes_used
,
3776 -1, save_pst
->texthigh
,
3777 dependency_list
, dependencies_used
, textlow_not_set
);
3779 dependencies_used
= 0;
3781 /* The objfile has its functions reordered if this partial symbol
3782 table overlaps any other partial symbol table.
3783 We cannot assume a reordered objfile if a partial symbol table
3784 is contained within another partial symbol table, as partial symbol
3785 tables for include files with executable code are contained
3786 within the partial symbol table for the including source file,
3787 and we do not want to flag the objfile reordered for these cases.
3789 This strategy works well for Irix-5.2 shared libraries, but we
3790 might have to use a more elaborate (and slower) algorithm for
3792 save_pst
= fdr_to_pst
[f_idx
].pst
;
3793 if (save_pst
!= NULL
3794 && save_pst
->textlow
!= 0
3795 && !(objfile
->flags
& OBJF_REORDERED
))
3797 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3800 && save_pst
->textlow
>= pst
->textlow
3801 && save_pst
->textlow
< pst
->texthigh
3802 && save_pst
->texthigh
> pst
->texthigh
)
3804 objfile
->flags
|= OBJF_REORDERED
;
3811 /* Now scan the FDRs for dependencies. */
3812 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3814 fh
= f_idx
+ debug_info
->fdr
;
3815 pst
= fdr_to_pst
[f_idx
].pst
;
3817 if (pst
== (struct partial_symtab
*) NULL
)
3820 /* This should catch stabs-in-ecoff. */
3824 /* Skip the first file indirect entry as it is a self dependency for
3825 source files or a reverse .h -> .c dependency for header files. */
3826 pst
->number_of_dependencies
= 0;
3828 ((struct partial_symtab
**)
3829 obstack_alloc (&objfile
->objfile_obstack
,
3831 * sizeof (struct partial_symtab
*))));
3832 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3836 (*swap_rfd_in
) (cur_bfd
,
3837 ((char *) debug_info
->external_rfd
3838 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3840 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3842 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3846 /* Skip self dependencies of header files. */
3850 /* Do not add to dependeny list if psymtab was empty. */
3851 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3853 pst
->dependencies
[pst
->number_of_dependencies
++]
3854 = fdr_to_pst
[rh
].pst
;
3858 /* Remove the dummy psymtab created for -O3 images above, if it is
3859 still empty, to enable the detection of stripped executables. */
3860 if (objfile
->psymtabs
->next
== NULL
3861 && objfile
->psymtabs
->number_of_dependencies
== 0
3862 && objfile
->psymtabs
->n_global_syms
== 0
3863 && objfile
->psymtabs
->n_static_syms
== 0)
3864 objfile
->psymtabs
= NULL
;
3865 do_cleanups (old_chain
);
3868 /* If the current psymbol has an enumerated type, we need to add
3869 all the enum constants to the partial symbol table. */
3872 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3875 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3876 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3877 char *ext_sym
= ((char *) debug_info
->external_sym
3878 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3888 /* It is an enumerated type if the next symbol entry is a stMember
3889 and its auxiliary index is indexNil or its auxiliary entry
3890 is a plain btNil or btVoid.
3891 Alpha cc -migrate enums are recognized by a zero index and
3892 a zero symbol value.
3893 DU 4.0 cc enums are recognized by a member type of btEnum without
3894 qualifiers and a zero symbol value. */
3895 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3896 if (sh
.st
!= stMember
)
3899 if (sh
.index
== indexNil
3900 || (sh
.index
== 0 && svalue
== 0))
3902 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3903 &(debug_info
->external_aux
3904 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3906 if ((tir
.bt
!= btNil
3908 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3909 || tir
.tq0
!= tqNil
)
3921 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3922 if (sh
.st
!= stMember
)
3924 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3926 /* Note that the value doesn't matter for enum constants
3927 in psymtabs, just in symtabs. */
3928 add_psymbol_to_list (name
, strlen (name
), 1,
3929 VAR_DOMAIN
, LOC_CONST
,
3930 &objfile
->static_psymbols
, 0,
3931 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3932 ext_sym
+= external_sym_size
;
3936 /* Get the next symbol. OBJFILE is unused. */
3939 mdebug_next_symbol_text (struct objfile
*objfile
)
3944 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3945 ((char *) debug_info
->external_sym
3946 + ((cur_fdr
->isymBase
+ cur_sdx
)
3947 * debug_swap
->external_sym_size
)),
3949 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3952 /* Ancillary function to psymtab_to_symtab(). Does all the work
3953 for turning the partial symtab PST into a symtab, recurring
3954 first on all dependent psymtabs. The argument FILENAME is
3955 only passed so we can see in debug stack traces what file
3958 This function has a split personality, based on whether the
3959 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3960 The flow of control and even the memory allocation differs. FIXME. */
3963 psymtab_to_symtab_1 (struct partial_symtab
*pst
, const char *filename
)
3965 bfd_size_type external_sym_size
;
3966 bfd_size_type external_pdr_size
;
3967 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3968 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3970 struct symtab
*st
= NULL
;
3972 struct linetable
*lines
;
3973 CORE_ADDR lowest_pdr_addr
= 0;
3974 int last_symtab_ended
= 0;
3980 /* Read in all partial symbtabs on which this one is dependent.
3981 NOTE that we do have circular dependencies, sigh. We solved
3982 that by setting pst->readin before this point. */
3984 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3985 if (!pst
->dependencies
[i
]->readin
)
3987 /* Inform about additional files to be read in. */
3990 fputs_filtered (" ", gdb_stdout
);
3992 fputs_filtered ("and ", gdb_stdout
);
3994 printf_filtered ("%s...",
3995 pst
->dependencies
[i
]->filename
);
3996 wrap_here (""); /* Flush output */
3997 gdb_flush (gdb_stdout
);
3999 /* We only pass the filename for debug purposes. */
4000 psymtab_to_symtab_1 (pst
->dependencies
[i
],
4001 pst
->dependencies
[i
]->filename
);
4004 /* Do nothing if this is a dummy psymtab. */
4006 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
4007 && pst
->textlow
== 0 && pst
->texthigh
== 0)
4010 /* Now read the symbols for this symtab. */
4012 cur_bfd
= CUR_BFD (pst
);
4013 debug_swap
= DEBUG_SWAP (pst
);
4014 debug_info
= DEBUG_INFO (pst
);
4015 pending_list
= PENDING_LIST (pst
);
4016 external_sym_size
= debug_swap
->external_sym_size
;
4017 external_pdr_size
= debug_swap
->external_pdr_size
;
4018 swap_sym_in
= debug_swap
->swap_sym_in
;
4019 swap_pdr_in
= debug_swap
->swap_pdr_in
;
4020 mdebugread_objfile
= pst
->objfile
;
4021 cur_fd
= FDR_IDX (pst
);
4022 fh
= ((cur_fd
== -1)
4024 : debug_info
->fdr
+ cur_fd
);
4027 /* See comment in parse_partial_symbols about the @stabs sentinel. */
4028 processing_gcc_compilation
= 0;
4029 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
4033 (*swap_sym_in
) (cur_bfd
,
4034 ((char *) debug_info
->external_sym
4035 + (fh
->isymBase
+ 1) * external_sym_size
),
4037 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
4040 /* We indicate that this is a GCC compilation so that certain
4041 features will be enabled in stabsread/dbxread. */
4042 processing_gcc_compilation
= 2;
4046 if (processing_gcc_compilation
!= 0)
4048 struct gdbarch
*gdbarch
= get_objfile_arch (pst
->objfile
);
4050 /* This symbol table contains stabs-in-ecoff entries. */
4052 /* Parse local symbols first. */
4054 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
4056 mdebugread_objfile
= NULL
;
4059 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4065 (*swap_sym_in
) (cur_bfd
,
4066 (((char *) debug_info
->external_sym
)
4067 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4069 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4071 /* XXX This is a hack. It will go away! */
4072 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4074 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4076 /* We should never get non N_STAB symbols here, but they
4077 should be harmless, so keep process_one_symbol from
4078 complaining about them. */
4079 if (type_code
& N_STAB
)
4081 /* If we found a trailing N_SO with no name, process
4082 it here instead of in process_one_symbol, so we
4083 can keep a handle to its symtab. The symtab
4084 would otherwise be ended twice, once in
4085 process_one_symbol, and once after this loop. */
4086 if (type_code
== N_SO
4088 && previous_stab_code
!= (unsigned char) N_SO
4091 valu
+= ANOFFSET (pst
->section_offsets
,
4092 SECT_OFF_TEXT (pst
->objfile
));
4093 previous_stab_code
= N_SO
;
4094 st
= end_symtab (valu
, pst
->objfile
,
4095 SECT_OFF_TEXT (pst
->objfile
));
4097 last_symtab_ended
= 1;
4101 last_symtab_ended
= 0;
4102 process_one_symbol (type_code
, 0, valu
, name
,
4103 pst
->section_offsets
, pst
->objfile
);
4106 /* Similarly a hack. */
4107 else if (name
[0] == '#')
4109 process_one_symbol (N_SLINE
, 0, valu
, name
,
4110 pst
->section_offsets
, pst
->objfile
);
4112 if (type_code
== N_FUN
)
4114 /* Make up special symbol to contain
4115 procedure specific info. */
4116 struct mdebug_extra_func_info
*e
=
4117 ((struct mdebug_extra_func_info
*)
4118 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4119 sizeof (struct mdebug_extra_func_info
)));
4120 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4122 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4123 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4124 SYMBOL_CLASS (s
) = LOC_CONST
;
4125 SYMBOL_TYPE (s
) = objfile_type (pst
->objfile
)->builtin_void
;
4126 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4127 e
->pdr
.framereg
= -1;
4128 add_symbol_to_list (s
, &local_symbols
);
4131 else if (sh
.st
== stLabel
)
4133 if (sh
.index
== indexNil
)
4135 /* This is what the gcc2_compiled and __gnu_compiled_*
4136 show up as. So don't complain. */
4141 /* Handle encoded stab line number. */
4142 valu
+= ANOFFSET (pst
->section_offsets
,
4143 SECT_OFF_TEXT (pst
->objfile
));
4144 record_line (current_subfile
, sh
.index
,
4145 gdbarch_addr_bits_remove (gdbarch
, valu
));
4148 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4149 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4150 /* These are generated by gcc-2.x, do not complain. */
4153 complaint (&symfile_complaints
,
4154 _("unknown stabs symbol %s"), name
);
4157 if (! last_symtab_ended
)
4159 st
= end_symtab (pst
->texthigh
, pst
->objfile
,
4160 SECT_OFF_TEXT (pst
->objfile
));
4164 /* There used to be a call to sort_blocks here, but this should not
4165 be necessary for stabs symtabs. And as sort_blocks modifies the
4166 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4167 it did the wrong thing if the first procedure in a file was
4168 generated via asm statements. */
4170 /* Fill in procedure info next. */
4174 struct cleanup
*old_chain
;
4180 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4181 old_chain
= make_cleanup (xfree
, pr_block
);
4183 pdr_ptr
= ((char *) debug_info
->external_pdr
4184 + fh
->ipdFirst
* external_pdr_size
);
4185 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4189 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4191 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4193 /* Determine lowest PDR address, the PDRs are not always
4195 if (pdr_in
== pr_block
)
4196 lowest_pdr_addr
= pdr_in
->adr
;
4197 else if (pdr_in
->adr
< lowest_pdr_addr
)
4198 lowest_pdr_addr
= pdr_in
->adr
;
4202 pdr_in_end
= pdr_in
+ fh
->cpd
;
4203 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4204 parse_procedure (pdr_in
, st
, pst
);
4206 do_cleanups (old_chain
);
4211 /* This symbol table contains ordinary ecoff entries. */
4219 st
= new_symtab ("unknown", 0, pst
->objfile
);
4223 maxlines
= 2 * fh
->cline
;
4224 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4226 /* The proper language was already determined when building
4227 the psymtab, use it. */
4228 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4231 psymtab_language
= st
->language
;
4233 lines
= LINETABLE (st
);
4235 /* Get a new lexical context. */
4237 push_parse_stack ();
4238 top_stack
->cur_st
= st
;
4239 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4241 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4242 BLOCK_END (top_stack
->cur_block
) = 0;
4243 top_stack
->blocktype
= stFile
;
4244 top_stack
->cur_type
= 0;
4245 top_stack
->procadr
= 0;
4246 top_stack
->numargs
= 0;
4247 found_ecoff_debugging_info
= 0;
4254 /* Parse local symbols first. */
4255 sym_ptr
= ((char *) debug_info
->external_sym
4256 + fh
->isymBase
* external_sym_size
);
4257 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4258 while (sym_ptr
< sym_end
)
4263 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4264 c
= parse_symbol (&sh
,
4265 debug_info
->external_aux
+ fh
->iauxBase
,
4266 sym_ptr
, fh
->fBigendian
,
4267 pst
->section_offsets
, pst
->objfile
);
4268 sym_ptr
+= c
* external_sym_size
;
4271 /* Linenumbers. At the end, check if we can save memory.
4272 parse_lines has to look ahead an arbitrary number of PDR
4273 structures, so we swap them all first. */
4277 struct cleanup
*old_chain
;
4283 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4285 old_chain
= make_cleanup (xfree
, pr_block
);
4287 pdr_ptr
= ((char *) debug_info
->external_pdr
4288 + fh
->ipdFirst
* external_pdr_size
);
4289 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4293 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4295 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4297 /* Determine lowest PDR address, the PDRs are not always
4299 if (pdr_in
== pr_block
)
4300 lowest_pdr_addr
= pdr_in
->adr
;
4301 else if (pdr_in
->adr
< lowest_pdr_addr
)
4302 lowest_pdr_addr
= pdr_in
->adr
;
4305 parse_lines (fh
, pr_block
, lines
, maxlines
,
4306 pst
, lowest_pdr_addr
);
4307 if (lines
->nitems
< fh
->cline
)
4308 lines
= shrink_linetable (lines
);
4310 /* Fill in procedure info next. */
4312 pdr_in_end
= pdr_in
+ fh
->cpd
;
4313 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4314 parse_procedure (pdr_in
, 0, pst
);
4316 do_cleanups (old_chain
);
4320 size
= lines
->nitems
;
4323 LINETABLE (st
) = obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4325 (sizeof (struct linetable
)
4326 + size
* sizeof (lines
->item
)));
4329 /* .. and our share of externals.
4330 XXX use the global list to speed up things here. How?
4331 FIXME, Maybe quit once we have found the right number of ext's? */
4332 top_stack
->cur_st
= st
;
4333 top_stack
->cur_block
4334 = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4336 top_stack
->blocktype
= stFile
;
4338 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4339 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4340 parse_external (ext_ptr
, fh
->fBigendian
,
4341 pst
->section_offsets
, pst
->objfile
);
4343 /* If there are undefined symbols, tell the user.
4344 The alpha has an undefined symbol for every symbol that is
4345 from a shared library, so tell the user only if verbose is on. */
4346 if (info_verbose
&& n_undef_symbols
)
4348 printf_filtered (_("File %s contains %d unresolved references:"),
4349 st
->filename
, n_undef_symbols
);
4350 printf_filtered ("\n\t%4d variables\n\t%4d "
4351 "procedures\n\t%4d labels\n",
4352 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4353 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4363 /* Now link the psymtab and the symtab. */
4366 mdebugread_objfile
= NULL
;
4369 /* Ancillary parsing procedures. */
4371 /* Return 1 if the symbol pointed to by SH has a cross reference
4372 to an opaque aggregate type, else 0. */
4375 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4382 if (sh
->index
== indexNil
)
4385 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4386 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4387 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4391 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4392 if (rn
->rfd
== 0xfff)
4393 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4401 /* Lookup the type at relative index RN. Return it in TPP
4402 if found and in any event come up with its name PNAME.
4403 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4404 Return value says how many aux symbols we ate. */
4407 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4408 enum type_code type_code
,
4409 /* Use to alloc new type if none is found. */
4410 char **pname
, int bigend
, char *sym_name
)
4419 struct mdebug_pending
*pend
;
4421 *tpp
= (struct type
*) NULL
;
4423 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4425 /* Escape index means 'the next one'. */
4426 if (rn
->rfd
== 0xfff)
4429 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4436 /* mips cc uses a rf of -1 for opaque struct definitions.
4437 Set TYPE_FLAG_STUB for these types so that check_typedef will
4438 resolve them if the struct gets defined in another compilation unit. */
4441 *pname
= "<undefined>";
4442 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
,
4443 (char *) NULL
, mdebugread_objfile
);
4447 /* mips cc uses an escaped rn->index of 0 for struct return types
4448 of procedures that were compiled without -g. These will always remain
4450 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4452 *pname
= "<undefined>";
4456 /* Find the relative file descriptor and the symbol in it. */
4457 fh
= get_rfd (fd
, rf
);
4458 xref_fd
= fh
- debug_info
->fdr
;
4460 if (rn
->index
>= fh
->csym
)
4462 /* File indirect entry is corrupt. */
4463 *pname
= "<illegal>";
4464 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4468 /* If we have processed this symbol then we left a forwarding
4469 pointer to the type in the pending list. If not, we`ll put
4470 it in a list of pending types, to be processed later when
4471 the file will be. In any event, we collect the name for the
4474 esh
= ((char *) debug_info
->external_sym
4475 + ((fh
->isymBase
+ rn
->index
)
4476 * debug_swap
->external_sym_size
));
4477 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4479 /* Make sure that this type of cross reference can be handled. */
4480 if ((sh
.sc
!= scInfo
4481 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4482 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4483 && sh
.st
!= stEnum
))
4484 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4486 /* File indirect entry is corrupt. */
4487 *pname
= "<illegal>";
4488 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4492 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4494 pend
= is_pending_symbol (fh
, esh
);
4499 /* We have not yet seen this type. */
4501 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4505 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4507 a) forward declarations of structs/unions/enums which are not
4508 defined in this compilation unit.
4509 For these the type will be void. This is a bad design decision
4510 as cross referencing across compilation units is impossible
4511 due to the missing name.
4512 b) forward declarations of structs/unions/enums/typedefs which
4513 are defined later in this file or in another file in the same
4514 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4515 Simply cross reference those again to get the true type.
4516 The forward references are not entered in the pending list and
4517 in the symbol table. */
4519 (*debug_swap
->swap_tir_in
) (bigend
,
4520 &(debug_info
->external_aux
4521 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4523 if (tir
.tq0
!= tqNil
)
4524 complaint (&symfile_complaints
,
4525 _("illegal tq0 in forward typedef for %s"), sym_name
);
4529 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4530 mdebugread_objfile
);
4531 *pname
= "<undefined>";
4538 (debug_info
->external_aux
4539 + fh
->iauxBase
+ sh
.index
+ 1),
4540 tpp
, type_code
, pname
,
4541 fh
->fBigendian
, sym_name
);
4545 /* Follow a forward typedef. This might recursively
4546 call cross_ref till we get a non typedef'ed type.
4547 FIXME: This is not correct behaviour, but gdb currently
4548 cannot handle typedefs without type copying. Type
4549 copying is impossible as we might have mutual forward
4550 references between two files and the copied type would not
4551 get filled in when we later parse its definition. */
4552 *tpp
= parse_type (xref_fd
,
4553 debug_info
->external_aux
+ fh
->iauxBase
,
4557 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4558 add_pending (fh
, esh
, *tpp
);
4562 complaint (&symfile_complaints
,
4563 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4565 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4566 mdebugread_objfile
);
4571 else if (sh
.st
== stTypedef
)
4573 /* Parse the type for a normal typedef. This might recursively call
4574 cross_ref till we get a non typedef'ed type.
4575 FIXME: This is not correct behaviour, but gdb currently
4576 cannot handle typedefs without type copying. But type copying is
4577 impossible as we might have mutual forward references between
4578 two files and the copied type would not get filled in when
4579 we later parse its definition. */
4580 *tpp
= parse_type (xref_fd
,
4581 debug_info
->external_aux
+ fh
->iauxBase
,
4585 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4589 /* Cross reference to a struct/union/enum which is defined
4590 in another file in the same compilation unit but that file
4591 has not been parsed yet.
4592 Initialize the type only, it will be filled in when
4593 it's definition is parsed. */
4594 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
4596 add_pending (fh
, esh
, *tpp
);
4599 /* We used one auxent normally, two if we got a "next one" rf. */
4604 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4605 keeping the symtab sorted. */
4607 static struct symbol
*
4608 mylookup_symbol (char *name
, struct block
*block
,
4609 domain_enum domain
, enum address_class
class)
4611 struct dict_iterator iter
;
4616 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4618 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4619 && SYMBOL_DOMAIN (sym
) == domain
4620 && SYMBOL_CLASS (sym
) == class
4621 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4625 block
= BLOCK_SUPERBLOCK (block
);
4627 return mylookup_symbol (name
, block
, domain
, class);
4632 /* Add a new symbol S to a block B. */
4635 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4637 SYMBOL_SYMTAB (s
) = symtab
;
4638 dict_add_symbol (BLOCK_DICT (b
), s
);
4641 /* Add a new block B to a symtab S. */
4644 add_block (struct block
*b
, struct symtab
*s
)
4646 struct blockvector
*bv
= BLOCKVECTOR (s
);
4648 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4649 (sizeof (struct blockvector
)
4650 + BLOCKVECTOR_NBLOCKS (bv
)
4651 * sizeof (bv
->block
)));
4652 if (bv
!= BLOCKVECTOR (s
))
4653 BLOCKVECTOR (s
) = bv
;
4655 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4658 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4659 MIPS' linenumber encoding might need more than one byte
4660 to describe it, LAST is used to detect these continuation lines.
4662 Combining lines with the same line number seems like a bad idea.
4663 E.g: There could be a line number entry with the same line number after the
4664 prologue and GDB should not ignore it (this is a better way to find
4665 a prologue than mips_skip_prologue).
4666 But due to the compressed line table format there are line number entries
4667 for the same line which are needed to bridge the gap to the next
4668 line number entry. These entries have a bogus address info with them
4669 and we are unable to tell them from intended duplicate line number
4671 This is another reason why -ggdb debugging format is preferable. */
4674 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4676 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4677 Change them to something sensible. */
4681 last
= -2; /* Make sure we record first line. */
4683 if (last
== lineno
) /* Skip continuation lines. */
4686 lt
->item
[lt
->nitems
].line
= lineno
;
4687 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4691 /* Sorting and reordering procedures. */
4693 /* Blocks with a smaller low bound should come first. */
4696 compare_blocks (const void *arg1
, const void *arg2
)
4699 struct block
**b1
= (struct block
**) arg1
;
4700 struct block
**b2
= (struct block
**) arg2
;
4702 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4704 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4708 /* Sort the blocks of a symtab S.
4709 Reorder the blocks in the blockvector by code-address,
4710 as required by some MI search routines. */
4713 sort_blocks (struct symtab
*s
)
4715 struct blockvector
*bv
= BLOCKVECTOR (s
);
4717 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4720 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4721 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4722 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4723 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4727 * This is very unfortunate: normally all functions are compiled in
4728 * the order they are found, but if the file is compiled -O3 things
4729 * are very different. It would be nice to find a reliable test
4730 * to detect -O3 images in advance.
4732 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4733 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4734 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4735 sizeof (struct block
*),
4740 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4742 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4743 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4744 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4745 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4748 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4749 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4751 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4752 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4753 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4754 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4758 /* Constructor/restructor/destructor procedures. */
4760 /* Allocate a new symtab for NAME. Needs an estimate of how many
4761 linenumbers MAXLINES we'll put in it. */
4763 static struct symtab
*
4764 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4766 struct symtab
*s
= allocate_symtab (name
, objfile
);
4768 LINETABLE (s
) = new_linetable (maxlines
);
4770 /* All symtabs must have at least two blocks. */
4771 BLOCKVECTOR (s
) = new_bvect (2);
4772 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4773 = new_block (NON_FUNCTION_BLOCK
);
4774 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4775 = new_block (NON_FUNCTION_BLOCK
);
4776 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4777 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4779 s
->debugformat
= "ECOFF";
4783 /* Allocate a new partial_symtab NAME. */
4785 static struct partial_symtab
*
4786 new_psymtab (char *name
, struct objfile
*objfile
)
4788 struct partial_symtab
*psymtab
;
4790 psymtab
= allocate_psymtab (name
, objfile
);
4791 psymtab
->section_offsets
= objfile
->section_offsets
;
4793 /* Keep a backpointer to the file's symbols. */
4795 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4796 sizeof (struct symloc
));
4797 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4798 CUR_BFD (psymtab
) = cur_bfd
;
4799 DEBUG_SWAP (psymtab
) = debug_swap
;
4800 DEBUG_INFO (psymtab
) = debug_info
;
4801 PENDING_LIST (psymtab
) = pending_list
;
4803 /* The way to turn this into a symtab is to call... */
4804 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4809 /* Allocate a linetable array of the given SIZE. Since the struct
4810 already includes one item, we subtract one when calculating the
4811 proper size to allocate. */
4813 static struct linetable
*
4814 new_linetable (int size
)
4816 struct linetable
*l
;
4820 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4821 l
= (struct linetable
*) xmalloc (size
);
4826 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4827 I am not so sure about the 3.4 ones.
4829 Since the struct linetable already includes one item, we subtract one when
4830 calculating the proper size to allocate. */
4832 static struct linetable
*
4833 shrink_linetable (struct linetable
*lt
)
4835 return (struct linetable
*) xrealloc ((void *) lt
,
4836 (sizeof (struct linetable
)
4838 * sizeof (lt
->item
))));
4841 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4843 static struct blockvector
*
4844 new_bvect (int nblocks
)
4846 struct blockvector
*bv
;
4849 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4850 bv
= (struct blockvector
*) xzalloc (size
);
4852 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4857 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4858 is non-zero, assume the block is associated to a function, and make
4859 sure that the symbols are stored linearly; otherwise, store them
4862 static struct block
*
4863 new_block (enum block_type type
)
4865 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4866 allocate the block. Which, in turn, suggests that the block
4867 should be allocated on an obstack. */
4868 struct block
*retval
= xzalloc (sizeof (struct block
));
4870 if (type
== FUNCTION_BLOCK
)
4871 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4873 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4878 /* Create a new symbol with printname NAME. */
4880 static struct symbol
*
4881 new_symbol (char *name
)
4883 struct symbol
*s
= ((struct symbol
*)
4884 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4885 sizeof (struct symbol
)));
4887 memset (s
, 0, sizeof (*s
));
4888 SYMBOL_SET_LANGUAGE (s
, psymtab_language
);
4889 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4893 /* Create a new type with printname NAME. */
4895 static struct type
*
4896 new_type (char *name
)
4900 t
= alloc_type (mdebugread_objfile
);
4901 TYPE_NAME (t
) = name
;
4902 INIT_CPLUS_SPECIFIC (t
);
4906 /* Read ECOFF debugging information from a BFD section. This is
4907 called from elfread.c. It parses the section into a
4908 ecoff_debug_info struct, and then lets the rest of the file handle
4912 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4913 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4915 bfd
*abfd
= objfile
->obfd
;
4916 struct ecoff_debug_info
*info
;
4917 struct cleanup
*back_to
;
4919 /* FIXME: It's not clear whether we should be getting minimal symbol
4920 information from .mdebug in an ELF file, or whether we will.
4921 Re-initialize the minimal symbol reader in case we do. */
4923 init_minimal_symbol_collection ();
4924 back_to
= make_cleanup_discard_minimal_symbols ();
4926 info
= ((struct ecoff_debug_info
*)
4927 obstack_alloc (&objfile
->objfile_obstack
,
4928 sizeof (struct ecoff_debug_info
)));
4930 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4931 error (_("Error reading ECOFF debugging information: %s"),
4932 bfd_errmsg (bfd_get_error ()));
4934 mdebug_build_psymtabs (objfile
, swap
, info
);
4936 install_minimal_symbols (objfile
);
4937 do_cleanups (back_to
);
4941 _initialize_mdebugread (void)
4943 basic_type_data
= register_objfile_data ();