1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2016 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
46 #include "filenames.h"
48 #include "gdb_obstack.h"
50 #include "stabsread.h"
51 #include "complaints.h"
53 #include "gdb-demangle.h"
55 #include "dictionary.h"
56 #include "mdebugread.h"
63 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
65 #include "libaout.h" /* Private BFD a.out information. */
66 #include "aout/aout64.h"
67 #include "aout/stab_gnu.h" /* STABS information. */
69 #include "expression.h"
71 extern void _initialize_mdebugread (void);
73 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
74 We use this define in order to know whether we should override a
75 symbol's ECOFF section with its ELF section. This is necessary in
76 case the symbol's ELF section could not be represented in ECOFF. */
77 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
78 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
80 /* The objfile we are currently reading. */
82 static struct objfile
*mdebugread_objfile
;
86 /* We put a pointer to this structure in the read_symtab_private field
91 /* Index of the FDR that this psymtab represents. */
93 /* The BFD that the psymtab was created from. */
95 const struct ecoff_debug_swap
*debug_swap
;
96 struct ecoff_debug_info
*debug_info
;
97 struct mdebug_pending
**pending_list
;
98 /* Pointer to external symbols for this file. */
100 /* Size of extern_tab. */
102 enum language pst_language
;
105 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
106 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
107 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
108 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
109 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
110 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
112 #define SC_IS_TEXT(sc) ((sc) == scText \
113 || (sc) == scRConst \
116 #define SC_IS_DATA(sc) ((sc) == scData \
121 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
122 #define SC_IS_BSS(sc) ((sc) == scBss)
123 #define SC_IS_SBSS(sc) ((sc) == scSBss)
124 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
126 /* Various complaints about symbol reading that don't abort the process. */
128 index_complaint (const char *arg1
)
130 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
134 unknown_ext_complaint (const char *arg1
)
136 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
140 basic_type_complaint (int arg1
, const char *arg2
)
142 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
147 bad_tag_guess_complaint (const char *arg1
)
149 complaint (&symfile_complaints
,
150 _("guessed tag type of %s incorrectly"), arg1
);
154 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
156 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
161 unexpected_type_code_complaint (const char *arg1
)
163 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
166 /* Macros and extra defs. */
168 /* Puns: hard to find whether -g was used and how. */
170 #define MIN_GLEVEL GLEVEL_0
171 #define compare_glevel(a,b) \
172 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
173 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
175 /* Things that really are local to this module. */
177 /* Remember what we deduced to be the source language of this psymtab. */
179 static enum language psymtab_language
= language_unknown
;
185 /* How to parse debugging information for CUR_BFD. */
187 static const struct ecoff_debug_swap
*debug_swap
;
189 /* Pointers to debugging information for CUR_BFD. */
191 static struct ecoff_debug_info
*debug_info
;
193 /* Pointer to current file decriptor record, and its index. */
198 /* Index of current symbol. */
202 /* Note how much "debuggable" this image is. We would like
203 to see at least one FDR with full symbols. */
205 static int max_gdbinfo
;
206 static int max_glevel
;
208 /* When examining .o files, report on undefined symbols. */
210 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
212 /* Pseudo symbol to use when putting stabs into the symbol table. */
214 static char stabs_symbol
[] = STABS_SYMBOL
;
216 /* Nonzero if we have seen ecoff debugging info for a file. */
218 static int found_ecoff_debugging_info
;
220 /* Forward declarations. */
222 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
225 static void parse_partial_symbols (struct objfile
*);
227 static int has_opaque_xref (FDR
*, SYMR
*);
229 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
230 char **, int, char *);
232 static struct symbol
*new_symbol (char *);
234 static struct type
*new_type (char *);
236 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
238 static struct block
*new_block (enum block_type
);
240 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
242 static struct linetable
*new_linetable (int);
244 static struct blockvector
*new_bvect (int);
246 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
249 static struct symbol
*mylookup_symbol (char *, const struct block
*,
250 domain_enum
, enum address_class
);
252 static void sort_blocks (struct symtab
*);
254 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
256 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
257 struct partial_symtab
*, const char *);
259 static void add_block (struct block
*, struct symtab
*);
261 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
263 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
265 static struct linetable
*shrink_linetable (struct linetable
*);
267 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
270 static char *mdebug_next_symbol_text (struct objfile
*);
272 /* Exported procedure: Builds a symtab from the partial symtab SELF.
273 Restores the environment in effect when SELF was created, delegates
274 most of the work to an ancillary procedure, and sorts
275 and reorders the symtab list at the end. SELF is not NULL. */
278 mdebug_read_symtab (struct partial_symtab
*self
, struct objfile
*objfile
)
282 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
283 gdb_flush (gdb_stdout
);
286 next_symbol_text_func
= mdebug_next_symbol_text
;
288 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
290 /* Match with global symbols. This only needs to be done once,
291 after all of the symtabs and dependencies have been read in. */
292 scan_file_globals (objfile
);
295 printf_filtered (_("done.\n"));
298 /* File-level interface functions. */
300 /* Find a file descriptor given its index RF relative to a file CF. */
303 get_rfd (int cf
, int rf
)
309 fdrs
= debug_info
->fdr
;
311 /* Object files do not have the RFD table, all refs are absolute. */
314 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
315 ((char *) debug_info
->external_rfd
317 * debug_swap
->external_rfd_size
)),
322 /* Return a safer print NAME for a file descriptor. */
328 return "<stripped file>";
331 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
335 /* Read in and parse the symtab of the file OBJFILE. Symbols from
336 different sections are relocated via the SECTION_OFFSETS. */
339 mdebug_build_psymtabs (struct objfile
*objfile
,
340 const struct ecoff_debug_swap
*swap
,
341 struct ecoff_debug_info
*info
)
343 cur_bfd
= objfile
->obfd
;
347 stabsread_new_init ();
348 buildsym_new_init ();
349 free_header_files ();
350 init_header_files ();
352 /* Make sure all the FDR information is swapped in. */
353 if (info
->fdr
== (FDR
*) NULL
)
359 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
360 (info
->symbolic_header
.ifdMax
362 fdr_src
= (char *) info
->external_fdr
;
364 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
366 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
367 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
370 parse_partial_symbols (objfile
);
373 /* Check to make sure file was compiled with -g. If not, warn the
374 user of this limitation. */
375 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
377 if (max_gdbinfo
== 0)
378 printf_unfiltered (_("\n%s not compiled with -g, "
379 "debugging support is limited.\n"),
381 printf_unfiltered (_("You should compile with -g2 or "
382 "-g3 for best debugging support.\n"));
383 gdb_flush (gdb_stdout
);
388 /* Local utilities */
390 /* Map of FDR indexes to partial symtabs. */
394 struct partial_symtab
*pst
; /* the psymtab proper */
395 long n_globals
; /* exported globals (external symbols) */
396 long globals_offset
; /* cumulative */
400 /* Utility stack, used to nest procedures and blocks properly.
401 It is a doubly linked list, to avoid too many alloc/free.
402 Since we might need it quite a few times it is NOT deallocated
405 static struct parse_stack
407 struct parse_stack
*next
, *prev
;
408 struct symtab
*cur_st
; /* Current symtab. */
409 struct block
*cur_block
; /* Block in it. */
411 /* What are we parsing. stFile, or stBlock are for files and
412 blocks. stProc or stStaticProc means we have seen the start of a
413 procedure, but not the start of the block within in. When we see
414 the start of that block, we change it to stNil, without pushing a
415 new block, i.e. stNil means both a procedure and a block. */
419 struct type
*cur_type
; /* Type we parse fields for. */
420 int cur_field
; /* Field number in cur_type. */
421 CORE_ADDR procadr
; /* Start addres of this procedure. */
422 int numargs
; /* Its argument count. */
425 *top_stack
; /* Top stack ptr */
428 /* Enter a new lexical context. */
431 push_parse_stack (void)
433 struct parse_stack
*newobj
;
435 /* Reuse frames if possible. */
436 if (top_stack
&& top_stack
->prev
)
437 newobj
= top_stack
->prev
;
439 newobj
= XCNEW (struct parse_stack
);
440 /* Initialize new frame with previous content. */
443 struct parse_stack
*prev
= newobj
->prev
;
445 *newobj
= *top_stack
;
446 top_stack
->prev
= newobj
;
448 newobj
->next
= top_stack
;
453 /* Exit a lexical context. */
456 pop_parse_stack (void)
461 top_stack
= top_stack
->next
;
465 /* Cross-references might be to things we haven't looked at
466 yet, e.g. type references. To avoid too many type
467 duplications we keep a quick fixup table, an array
468 of lists of references indexed by file descriptor. */
470 struct mdebug_pending
472 struct mdebug_pending
*next
; /* link */
473 char *s
; /* the unswapped symbol */
474 struct type
*t
; /* its partial type descriptor */
478 /* The pending information is kept for an entire object file. We
479 allocate the pending information table when we create the partial
480 symbols, and we store a pointer to the single table in each
483 static struct mdebug_pending
**pending_list
;
485 /* Check whether we already saw symbol SH in file FH. */
487 static struct mdebug_pending
*
488 is_pending_symbol (FDR
*fh
, char *sh
)
490 int f_idx
= fh
- debug_info
->fdr
;
491 struct mdebug_pending
*p
;
493 /* Linear search is ok, list is typically no more than 10 deep. */
494 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
500 /* Add a new symbol SH of type T. */
503 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
505 int f_idx
= fh
- debug_info
->fdr
;
506 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
508 /* Make sure we do not make duplicates. */
511 p
= ((struct mdebug_pending
*)
512 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
513 sizeof (struct mdebug_pending
)));
516 p
->next
= pending_list
[f_idx
];
517 pending_list
[f_idx
] = p
;
522 /* Parsing Routines proper. */
525 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
527 complaint (&symfile_complaints
,
528 _("bad register number %d (max %d) in symbol %s"),
529 regnum
, num_regs
- 1, sym
);
532 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
533 For blocks, procedures and types we open a new lexical context.
534 This is basically just a big switch on the symbol's type. Argument
535 AX is the base pointer of aux symbols for this file (fh->iauxBase).
536 EXT_SH points to the unswapped symbol, which is needed for struct,
537 union, etc., types; it is NULL for an EXTR. BIGEND says whether
538 aux symbols are big-endian or little-endian. Return count of
539 SYMR's handled (normally one). */
542 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
544 int regno
= gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
547 || regno
>= (gdbarch_num_regs (gdbarch
)
548 + gdbarch_num_pseudo_regs (gdbarch
)))
550 reg_value_complaint (regno
,
551 gdbarch_num_regs (gdbarch
)
552 + gdbarch_num_pseudo_regs (gdbarch
),
553 SYMBOL_PRINT_NAME (sym
));
555 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
561 static const struct symbol_register_ops mdebug_register_funcs
= {
565 /* The "aclass" indices for computed symbols. */
567 static int mdebug_register_index
;
568 static int mdebug_regparm_index
;
570 /* Common code for symbols describing data. */
573 add_data_symbol (SYMR
*sh
, union aux_ext
*ax
, int bigend
,
574 struct symbol
*s
, int aclass_index
, struct block
*b
,
575 struct objfile
*objfile
, char *name
)
577 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
578 SYMBOL_ACLASS_INDEX (s
) = aclass_index
;
579 add_symbol (s
, top_stack
->cur_st
, b
);
581 /* Type could be missing if file is compiled without debugging info. */
582 if (SC_IS_UNDEF (sh
->sc
)
583 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
584 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
586 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
587 /* Value of a data symbol is its memory address. */
591 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
592 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
594 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
595 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
596 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
600 struct mdebug_pending
*pend
;
605 long svalue
= sh
->value
;
608 if (ext_sh
== (char *) NULL
)
609 name
= debug_info
->ssext
+ sh
->iss
;
611 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
617 /* Do not relocate relative values.
618 The value of a stEnd symbol is the displacement from the
619 corresponding start symbol value.
620 The value of a stBlock symbol is the displacement from the
621 procedure address. */
622 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
623 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
630 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
634 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
643 case stGlobal
: /* External symbol, goes into global block. */
644 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
646 s
= new_symbol (name
);
647 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
648 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
651 case stStatic
: /* Static data, goes into current block. */
652 b
= top_stack
->cur_block
;
653 s
= new_symbol (name
);
654 if (SC_IS_COMMON (sh
->sc
))
656 /* It is a FORTRAN common block. At least for SGI Fortran the
657 address is not in the symbol; we need to fix it later in
658 scan_file_globals. */
659 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
660 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
661 global_sym_chain
[bucket
] = s
;
664 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
665 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
668 case stLocal
: /* Local variable, goes into current block. */
669 b
= top_stack
->cur_block
;
670 s
= new_symbol (name
);
671 SYMBOL_VALUE (s
) = svalue
;
672 if (sh
->sc
== scRegister
)
673 add_data_symbol (sh
, ax
, bigend
, s
, mdebug_register_index
,
676 add_data_symbol (sh
, ax
, bigend
, s
, LOC_LOCAL
,
680 case stParam
: /* Arg to procedure, goes into current
683 found_ecoff_debugging_info
= 1;
684 top_stack
->numargs
++;
686 /* Special GNU C++ name. */
687 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
688 name
= "this"; /* FIXME, not alloc'd in obstack. */
689 s
= new_symbol (name
);
691 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
692 SYMBOL_IS_ARGUMENT (s
) = 1;
696 /* Pass by value in register. */
697 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
700 /* Pass by reference on stack. */
701 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
704 /* Pass by reference in register. */
705 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
708 /* Pass by value on stack. */
709 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
712 SYMBOL_VALUE (s
) = svalue
;
713 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
714 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
717 case stLabel
: /* label, goes into current block. */
718 s
= new_symbol (name
);
719 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
720 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
721 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
722 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
723 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
726 case stProc
: /* Procedure, usually goes into global block. */
727 case stStaticProc
: /* Static procedure, goes into current block. */
728 /* For stProc symbol records, we need to check the storage class
729 as well, as only (stProc, scText) entries represent "real"
730 procedures - See the Compaq document titled "Object File /
731 Symbol Table Format Specification" for more information.
732 If the storage class is not scText, we discard the whole block
733 of symbol records for this stProc. */
734 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
736 char *ext_tsym
= ext_sh
;
737 int keep_counting
= 1;
740 while (keep_counting
)
742 ext_tsym
+= external_sym_size
;
743 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
753 complaint (&symfile_complaints
,
754 _("unknown symbol type 0x%x"), sh
->st
);
760 s
= new_symbol (name
);
761 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
762 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
763 /* Type of the return value. */
764 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
765 t
= objfile_type (objfile
)->builtin_int
;
768 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
769 if (strcmp (name
, "malloc") == 0
770 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
772 /* I don't know why, but, at least under Alpha GNU/Linux,
773 when linking against a malloc without debugging
774 symbols, its read as a function returning void---this
775 is bad because it means we cannot call functions with
776 string arguments interactively; i.e., "call
777 printf("howdy\n")" would fail with the error message
778 "program has no memory available". To avoid this, we
779 patch up the type and make it void*
780 instead. (davidm@azstarnet.com). */
781 t
= make_pointer_type (t
, NULL
);
784 b
= top_stack
->cur_block
;
785 if (sh
->st
== stProc
)
787 const struct blockvector
*bv
788 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
790 /* The next test should normally be true, but provides a
791 hook for nested functions (which we don't want to make
793 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
794 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
795 /* Irix 5 sometimes has duplicate names for the same
796 function. We want to add such names up at the global
797 level, not as a nested function. */
798 else if (sh
->value
== top_stack
->procadr
)
799 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
801 add_symbol (s
, top_stack
->cur_st
, b
);
803 /* Make a type for the procedure itself. */
804 SYMBOL_TYPE (s
) = lookup_function_type (t
);
806 /* All functions in C++ have prototypes. For C we don't have enough
807 information in the debug info. */
808 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
809 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
811 /* Create and enter a new lexical context. */
812 b
= new_block (FUNCTION_BLOCK
);
813 SYMBOL_BLOCK_VALUE (s
) = b
;
814 BLOCK_FUNCTION (b
) = s
;
815 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
816 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
817 add_block (b
, top_stack
->cur_st
);
819 /* Not if we only have partial info. */
820 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
824 top_stack
->cur_block
= b
;
825 top_stack
->blocktype
= sh
->st
;
826 top_stack
->cur_type
= SYMBOL_TYPE (s
);
827 top_stack
->cur_field
= -1;
828 top_stack
->procadr
= sh
->value
;
829 top_stack
->numargs
= 0;
832 /* Beginning of code for structure, union, and enum definitions.
833 They all share a common set of local variables, defined here. */
835 enum type_code type_code
;
841 case stStruct
: /* Start a block defining a struct type. */
842 type_code
= TYPE_CODE_STRUCT
;
843 goto structured_common
;
845 case stUnion
: /* Start a block defining a union type. */
846 type_code
= TYPE_CODE_UNION
;
847 goto structured_common
;
849 case stEnum
: /* Start a block defining an enum type. */
850 type_code
= TYPE_CODE_ENUM
;
851 goto structured_common
;
853 case stBlock
: /* Either a lexical block, or some type. */
854 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
855 goto case_stBlock_code
; /* Lexical block */
857 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
859 /* Common code for handling struct, union, enum, and/or as-yet-
860 unknown-type blocks of info about structured data. `type_code'
861 has been set to the proper TYPE_CODE, if we know it. */
863 found_ecoff_debugging_info
= 1;
865 top_stack
->blocktype
= stBlock
;
867 /* First count the number of fields and the highest value. */
870 for (ext_tsym
= ext_sh
+ external_sym_size
;
872 ext_tsym
+= external_sym_size
)
876 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
881 /* C++ encodes class types as structures where there the
882 methods are encoded as stProc. The scope of stProc
883 symbols also ends with stEnd, thus creating a risk of
884 taking the wrong stEnd symbol record as the end of
885 the current struct, which would cause GDB to undercount
886 the real number of fields in this struct. To make sure
887 we really reached the right stEnd symbol record, we
888 check the associated name, and match it against the
889 struct name. Since method names are mangled while
890 the class name is not, there is no risk of having a
891 method whose name is identical to the class name
892 (in particular constructor method names are different
893 from the class name). There is therefore no risk that
894 this check stops the count on the StEnd of a method.
896 Also, assume that we're really at the end when tsym.iss
898 if (tsym
.iss
== issNull
899 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
905 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
907 /* If the type of the member is Nil (or Void),
908 without qualifiers, assume the tag is an
910 Alpha cc -migrate enums are recognized by a zero
911 index and a zero symbol value.
912 DU 4.0 cc enums are recognized by a member type of
913 btEnum without qualifiers and a zero symbol value. */
914 if (tsym
.index
== indexNil
915 || (tsym
.index
== 0 && sh
->value
== 0))
916 type_code
= TYPE_CODE_ENUM
;
919 (*debug_swap
->swap_tir_in
) (bigend
,
920 &ax
[tsym
.index
].a_ti
,
922 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
923 || (tir
.bt
== btEnum
&& sh
->value
== 0))
925 type_code
= TYPE_CODE_ENUM
;
929 if (tsym
.value
> max_value
)
930 max_value
= tsym
.value
;
939 /* This is a no-op; is it trying to tell us something
940 we should be checking? */
941 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
945 /* This is something like a struct within a
946 struct. Skip over the fields of the inner
947 struct. The -1 is because the for loop will
948 increment ext_tsym. */
949 ext_tsym
= ((char *) debug_info
->external_sym
950 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
951 * external_sym_size
));
957 /* mips cc puts out a typedef for struct x if it is not yet
958 defined when it encounters
959 struct y { struct x *xp; };
964 /* Irix5 cc puts out a stIndirect for struct x if it is not
965 yet defined when it encounters
966 struct y { struct x *xp; };
971 complaint (&symfile_complaints
,
972 _("declaration block contains "
973 "unhandled symbol type %d"),
979 /* In an stBlock, there is no way to distinguish structs,
980 unions, and enums at this point. This is a bug in the
981 original design (that has been fixed with the recent
982 addition of the stStruct, stUnion, and stEnum symbol
983 types.) The way you can tell is if/when you see a variable
984 or field of that type. In that case the variable's type
985 (in the AUX table) says if the type is struct, union, or
986 enum, and points back to the stBlock here. So you can
987 patch the tag kind up later - but only if there actually is
988 a variable or field of that type.
990 So until we know for sure, we will guess at this point.
992 If the first member has index==indexNil or a void type,
993 assume we have an enumeration.
994 Otherwise, if there is more than one member, and all
995 the members have offset 0, assume we have a union.
996 Otherwise, assume we have a struct.
998 The heuristic could guess wrong in the case of of an
999 enumeration with no members or a union with one (or zero)
1000 members, or when all except the last field of a struct have
1001 width zero. These are uncommon and/or illegal situations,
1002 and in any case guessing wrong probably doesn't matter
1005 But if we later do find out we were wrong, we fixup the tag
1006 kind. Members of an enumeration must be handled
1007 differently from struct/union fields, and that is harder to
1008 patch up, but luckily we shouldn't need to. (If there are
1009 any enumeration members, we can tell for sure it's an enum
1012 if (type_code
== TYPE_CODE_UNDEF
)
1014 if (nfields
> 1 && max_value
== 0)
1015 type_code
= TYPE_CODE_UNION
;
1017 type_code
= TYPE_CODE_STRUCT
;
1020 /* Create a new type or use the pending type. */
1021 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1022 if (pend
== (struct mdebug_pending
*) NULL
)
1024 t
= new_type (NULL
);
1025 add_pending (cur_fdr
, ext_sh
, t
);
1030 /* Do not set the tag name if it is a compiler generated tag name
1031 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1032 Alpha cc puts out an sh->iss of zero for those. */
1033 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1034 TYPE_TAG_NAME (t
) = NULL
;
1036 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1037 name
, (char *) NULL
);
1039 TYPE_CODE (t
) = type_code
;
1040 TYPE_LENGTH (t
) = sh
->value
;
1041 TYPE_NFIELDS (t
) = nfields
;
1042 TYPE_FIELDS (t
) = f
= ((struct field
*)
1044 nfields
* sizeof (struct field
)));
1046 if (type_code
== TYPE_CODE_ENUM
)
1048 int unsigned_enum
= 1;
1050 /* This is a non-empty enum. */
1052 /* DEC c89 has the number of enumerators in the sh.value field,
1053 not the type length, so we have to compensate for that
1054 incompatibility quirk.
1055 This might do the wrong thing for an enum with one or two
1056 enumerators and gcc -gcoff -fshort-enums, but these cases
1057 are hopefully rare enough.
1058 Alpha cc -migrate has a sh.value field of zero, we adjust
1060 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1061 || TYPE_LENGTH (t
) == 0)
1062 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1063 for (ext_tsym
= ext_sh
+ external_sym_size
;
1065 ext_tsym
+= external_sym_size
)
1068 struct symbol
*enum_sym
;
1070 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1072 if (tsym
.st
!= stMember
)
1075 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1076 FIELD_TYPE (*f
) = t
;
1077 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1078 FIELD_BITSIZE (*f
) = 0;
1080 enum_sym
= allocate_symbol (mdebugread_objfile
);
1081 SYMBOL_SET_LINKAGE_NAME
1083 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1084 f
->name
, strlen (f
->name
)));
1085 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1086 SYMBOL_TYPE (enum_sym
) = t
;
1087 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1088 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1089 if (SYMBOL_VALUE (enum_sym
) < 0)
1091 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1093 /* Skip the stMembers that we've handled. */
1098 TYPE_UNSIGNED (t
) = 1;
1100 /* Make this the current type. */
1101 top_stack
->cur_type
= t
;
1102 top_stack
->cur_field
= 0;
1104 /* Do not create a symbol for alpha cc unnamed structs. */
1108 /* gcc puts out an empty struct for an opaque struct definitions,
1109 do not create a symbol for it either. */
1110 if (TYPE_NFIELDS (t
) == 0)
1116 s
= new_symbol (name
);
1117 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1118 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1119 SYMBOL_VALUE (s
) = 0;
1120 SYMBOL_TYPE (s
) = t
;
1121 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1124 /* End of local variables shared by struct, union, enum, and
1125 block (as yet unknown struct/union/enum) processing. */
1129 found_ecoff_debugging_info
= 1;
1130 /* Beginnning of (code) block. Value of symbol
1131 is the displacement from procedure start. */
1132 push_parse_stack ();
1134 /* Do not start a new block if this is the outermost block of a
1135 procedure. This allows the LOC_BLOCK symbol to point to the
1136 block with the local variables, so funcname::var works. */
1137 if (top_stack
->blocktype
== stProc
1138 || top_stack
->blocktype
== stStaticProc
)
1140 top_stack
->blocktype
= stNil
;
1144 top_stack
->blocktype
= stBlock
;
1145 b
= new_block (NON_FUNCTION_BLOCK
);
1146 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1147 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1148 top_stack
->cur_block
= b
;
1149 add_block (b
, top_stack
->cur_st
);
1152 case stEnd
: /* end (of anything) */
1153 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1155 /* Finished with type */
1156 top_stack
->cur_type
= 0;
1158 else if (sh
->sc
== scText
&&
1159 (top_stack
->blocktype
== stProc
||
1160 top_stack
->blocktype
== stStaticProc
))
1162 /* Finished with procedure */
1163 const struct blockvector
*bv
1164 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1165 struct mdebug_extra_func_info
*e
;
1166 struct block
*b
= top_stack
->cur_block
;
1167 struct type
*ftype
= top_stack
->cur_type
;
1170 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1172 /* Make up special symbol to contain procedure specific info. */
1173 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1174 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1175 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1176 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1177 e
= ((struct mdebug_extra_func_info
*)
1178 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1179 sizeof (struct mdebug_extra_func_info
)));
1180 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1181 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1182 e
->numargs
= top_stack
->numargs
;
1183 e
->pdr
.framereg
= -1;
1184 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1186 /* f77 emits proc-level with address bounds==[0,0],
1187 So look for such child blocks, and patch them. */
1188 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1190 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1192 if (BLOCK_SUPERBLOCK (b_bad
) == b
1193 && BLOCK_START (b_bad
) == top_stack
->procadr
1194 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1196 BLOCK_START (b_bad
) = BLOCK_START (b
);
1197 BLOCK_END (b_bad
) = BLOCK_END (b
);
1201 if (TYPE_NFIELDS (ftype
) <= 0)
1203 /* No parameter type information is recorded with the function's
1204 type. Set that from the type of the parameter symbols. */
1205 int nparams
= top_stack
->numargs
;
1211 struct block_iterator iter
;
1213 TYPE_NFIELDS (ftype
) = nparams
;
1214 TYPE_FIELDS (ftype
) = (struct field
*)
1215 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1218 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1220 if (iparams
== nparams
)
1223 if (SYMBOL_IS_ARGUMENT (sym
))
1225 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1226 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1233 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1235 /* End of (code) block. The value of the symbol is the
1236 displacement from the procedure`s start address of the
1237 end of this block. */
1238 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1240 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1242 /* End of outermost block. Pop parse stack and ignore. The
1243 following stEnd of stProc will take care of the block. */
1246 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1248 /* End of file. Pop parse stack and ignore. Higher
1249 level code deals with this. */
1253 complaint (&symfile_complaints
,
1254 _("stEnd with storage class %d not handled"), sh
->sc
);
1256 pop_parse_stack (); /* Restore previous lexical context. */
1259 case stMember
: /* member of struct or union */
1260 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1261 FIELD_NAME (*f
) = name
;
1262 SET_FIELD_BITPOS (*f
, sh
->value
);
1264 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1265 &bitsize
, bigend
, name
);
1266 FIELD_BITSIZE (*f
) = bitsize
;
1269 case stIndirect
: /* forward declaration on Irix5 */
1270 /* Forward declarations from Irix5 cc are handled by cross_ref,
1274 case stTypedef
: /* type definition */
1275 found_ecoff_debugging_info
= 1;
1277 /* Typedefs for forward declarations and opaque structs from alpha cc
1278 are handled by cross_ref, skip them. */
1282 /* Parse the type or use the pending type. */
1283 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1284 if (pend
== (struct mdebug_pending
*) NULL
)
1286 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1287 add_pending (cur_fdr
, ext_sh
, t
);
1292 /* Mips cc puts out a typedef with the name of the struct for forward
1293 declarations. These should not go into the symbol table and
1294 TYPE_NAME should not be set for them.
1295 They can't be distinguished from an intentional typedef to
1296 the same name however:
1298 struct x { int ix; int jx; };
1302 struct xx {int ixx; int jxx; };
1303 generates a cross referencing stTypedef for x and xx.
1304 The user visible effect of this is that the type of a pointer
1305 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1306 The problem is fixed with alpha cc and Irix5 cc. */
1308 /* However if the typedef cross references to an opaque aggregate, it
1309 is safe to omit it from the symbol table. */
1311 if (has_opaque_xref (cur_fdr
, sh
))
1313 s
= new_symbol (name
);
1314 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1315 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1316 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1317 SYMBOL_TYPE (s
) = t
;
1318 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1320 /* Incomplete definitions of structs should not get a name. */
1321 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1322 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1323 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1324 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1326 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1327 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1329 /* If we are giving a name to a type such as "pointer to
1330 foo" or "function returning foo", we better not set
1331 the TYPE_NAME. If the program contains "typedef char
1332 *caddr_t;", we don't want all variables of type char
1333 * to print as caddr_t. This is not just a
1334 consequence of GDB's type management; CC and GCC (at
1335 least through version 2.4) both output variables of
1336 either type char * or caddr_t with the type
1337 refering to the stTypedef symbol for caddr_t. If a future
1338 compiler cleans this up it GDB is not ready for it
1339 yet, but if it becomes ready we somehow need to
1340 disable this check (without breaking the PCC/GCC2.4
1345 Fortunately, this check seems not to be necessary
1346 for anything except pointers or functions. */
1349 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1353 case stFile
: /* file name */
1354 push_parse_stack ();
1355 top_stack
->blocktype
= sh
->st
;
1358 /* I`ve never seen these for C */
1360 break; /* register relocation */
1362 break; /* forwarding address */
1364 break; /* constant */
1366 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1375 static const struct objfile_data
*basic_type_data
;
1377 static struct type
*
1378 basic_type (int bt
, struct objfile
*objfile
)
1380 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1381 struct type
**map_bt
1382 = (struct type
**) objfile_data (objfile
, basic_type_data
);
1390 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1391 btMax
, struct type
*);
1392 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1401 tp
= objfile_type (objfile
)->builtin_void
;
1405 tp
= init_pointer_type (objfile
, 32, "adr_32",
1406 objfile_type (objfile
)->builtin_void
);
1410 tp
= init_integer_type (objfile
, 8, 0, "char");
1414 tp
= init_integer_type (objfile
, 8, 1, "unsigned char");
1418 tp
= init_integer_type (objfile
, 16, 0, "short");
1422 tp
= init_integer_type (objfile
, 16, 1, "unsigned short");
1426 tp
= init_integer_type (objfile
, 32, 0, "int");
1430 tp
= init_integer_type (objfile
, 32, 1, "unsigned int");
1434 tp
= init_integer_type (objfile
, 32, 0, "long");
1438 tp
= init_integer_type (objfile
, 32, 1, "unsigned long");
1442 tp
= init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
1447 tp
= init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
1452 tp
= init_complex_type (objfile
, "complex",
1453 basic_type (btFloat
, objfile
));
1457 tp
= init_complex_type (objfile
, "double complex",
1458 basic_type (btFloat
, objfile
));
1462 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1463 good? Would we be better off with TYPE_CODE_ERROR? Should
1464 TYPE_CODE_ERROR print things in hex if it knows the size? */
1465 tp
= init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
1470 tp
= init_type (objfile
, TYPE_CODE_ERROR
,
1471 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
1472 "floating decimal");
1476 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1478 tp
= init_type (objfile
, TYPE_CODE_STRING
, 1, "string");
1482 tp
= objfile_type (objfile
)->builtin_void
;
1486 tp
= init_integer_type (objfile
, 64, 0, "long");
1490 tp
= init_integer_type (objfile
, 64, 1, "unsigned long");
1494 tp
= init_integer_type (objfile
, 64, 0, "long long");
1498 tp
= init_integer_type (objfile
, 64, 1, "unsigned long long");
1502 tp
= init_pointer_type (objfile
, 64, "adr_64",
1503 objfile_type (objfile
)->builtin_void
);
1507 tp
= init_integer_type (objfile
, 64, 0, "int");
1511 tp
= init_integer_type (objfile
, 64, 1, "unsigned int");
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 (mdebugread_objfile
, type_code
, 0, NULL
);
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)
1707 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1708 name
, strlen (name
)));
1712 /* All these types really point to some (common) MIPS type
1713 definition, and only the type-qualifiers fully identify
1714 them. We'll make the same effort at sharing.
1715 FIXME: We are not doing any guessing on range types. */
1716 if (t
->bt
== btRange
)
1720 /* Try to cross reference this type, build new type on failure. */
1721 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1722 if (tp
== (struct type
*) NULL
)
1723 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1725 /* Make sure that TYPE_CODE(tp) has an expected type code.
1726 Any type may be returned from cross_ref if file indirect entries
1728 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1730 unexpected_type_code_complaint (sym_name
);
1734 /* Usually, TYPE_CODE(tp) is already type_code. The main
1735 exception is if we guessed wrong re struct/union/enum. */
1736 if (TYPE_CODE (tp
) != type_code
)
1738 bad_tag_guess_complaint (sym_name
);
1739 TYPE_CODE (tp
) = type_code
;
1741 if (TYPE_NAME (tp
) == NULL
1742 || strcmp (TYPE_NAME (tp
), name
) != 0)
1745 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1746 name
, strlen (name
)));
1749 if (t
->bt
== btTypedef
)
1753 /* Try to cross reference this type, it should succeed. */
1754 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1755 if (tp
== (struct type
*) NULL
)
1757 complaint (&symfile_complaints
,
1758 _("unable to cross ref btTypedef for %s"), sym_name
);
1759 tp
= basic_type (btInt
, mdebugread_objfile
);
1763 /* Deal with range types. */
1764 if (t
->bt
== btRange
)
1766 TYPE_NFIELDS (tp
) = 0;
1767 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1768 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1769 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1771 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1775 /* Parse all the type qualifiers now. If there are more
1776 than 6 the game will continue in the next aux. */
1780 #define PARSE_TQ(tq) \
1781 if (t->tq != tqNil) \
1782 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1794 /* mips cc 2.x and gcc never put out continued aux entries. */
1798 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1802 /* Complain for illegal continuations due to corrupt aux entries. */
1804 complaint (&symfile_complaints
,
1805 _("illegal TIR continued for %s"), sym_name
);
1810 /* Make up a complex type from a basic one. Type is passed by
1811 reference in TPP and side-effected as necessary. The type
1812 qualifier TQ says how to handle the aux symbols at AX for
1813 the symbol SX we are currently analyzing. BIGEND says whether
1814 aux symbols are big-endian or little-endian.
1815 Returns the number of aux symbols we parsed. */
1818 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1824 /* Used in array processing. */
1835 t
= lookup_pointer_type (*tpp
);
1840 t
= lookup_function_type (*tpp
);
1847 /* Determine and record the domain type (type of index). */
1848 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1854 rf
= AUX_GET_ISYM (bigend
, ax
);
1857 fh
= get_rfd (fd
, rf
);
1859 indx
= parse_type (fh
- debug_info
->fdr
,
1860 debug_info
->external_aux
+ fh
->iauxBase
,
1861 id
, (int *) NULL
, bigend
, sym_name
);
1863 /* The bounds type should be an integer type, but might be anything
1864 else due to corrupt aux entries. */
1865 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1867 complaint (&symfile_complaints
,
1868 _("illegal array index type for %s, assuming int"),
1870 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1873 /* Get the bounds, and create the array type. */
1875 lower
= AUX_GET_DNLOW (bigend
, ax
);
1877 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1879 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1881 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1884 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1886 /* We used to fill in the supplied array element bitsize
1887 here if the TYPE_LENGTH of the target type was zero.
1888 This happens for a `pointer to an array of anonymous structs',
1889 but in this case the array element bitsize is also zero,
1890 so nothing is gained.
1891 And we used to check the TYPE_LENGTH of the target type against
1892 the supplied array element bitsize.
1893 gcc causes a mismatch for `pointer to array of object',
1894 since the sdb directives it uses do not have a way of
1895 specifying the bitsize, but it does no harm (the
1896 TYPE_LENGTH should be correct) and we should be able to
1897 ignore the erroneous bitsize from the auxiliary entry safely.
1898 dbx seems to ignore it too. */
1900 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1901 if (TYPE_LENGTH (*tpp
) == 0)
1902 TYPE_TARGET_STUB (t
) = 1;
1908 /* Volatile -- currently ignored */
1912 /* Const -- currently ignored */
1916 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1922 /* Parse a procedure descriptor record PR. Note that the procedure is
1923 parsed _after_ the local symbols, now we just insert the extra
1924 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1925 already been placed in the procedure's main block. Note also that
1926 images that have been partially stripped (ld -x) have been deprived
1927 of local symbols, and we have to cope with them here. FIRST_OFF is
1928 the offset of the first procedure for this FDR; we adjust the
1929 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1930 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1931 in question, or NULL to use top_stack->cur_block. */
1934 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1935 struct partial_symtab
*pst
)
1937 struct symbol
*s
, *i
;
1938 const struct block
*b
;
1941 /* Simple rule to find files linked "-x". */
1942 if (cur_fdr
->rss
== -1)
1946 /* Static procedure at address pr->adr. Sigh. */
1947 /* FIXME-32x64. assuming pr->adr fits in long. */
1948 complaint (&symfile_complaints
,
1949 _("can't handle PDR for static proc at 0x%lx"),
1950 (unsigned long) pr
->adr
);
1958 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1959 ((char *) debug_info
->external_ext
1961 * debug_swap
->external_ext_size
)),
1963 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1971 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1972 ((char *) debug_info
->external_sym
1973 + ((cur_fdr
->isymBase
+ pr
->isym
)
1974 * debug_swap
->external_sym_size
)),
1976 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1979 if (search_symtab
!= NULL
)
1982 /* This loses both in the case mentioned (want a static, find a global),
1983 but also if we are looking up a non-mangled name which happens to
1984 match the name of a mangled function. */
1985 /* We have to save the cur_fdr across the call to lookup_symbol.
1986 If the pdr is for a static function and if a global function with
1987 the same name exists, lookup_symbol will eventually read in the symtab
1988 for the global function and clobber cur_fdr. */
1989 FDR
*save_cur_fdr
= cur_fdr
;
1991 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1992 cur_fdr
= save_cur_fdr
;
1996 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
2003 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
2004 VAR_DOMAIN
, LOC_BLOCK
);
2008 b
= SYMBOL_BLOCK_VALUE (s
);
2012 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2016 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2017 s
= new_symbol (sh_name
);
2018 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2019 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2020 /* Donno its type, hope int is ok. */
2022 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2023 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2024 /* Won't have symbols for this one. */
2026 SYMBOL_BLOCK_VALUE (s
) = b
;
2027 BLOCK_FUNCTION (b
) = s
;
2028 BLOCK_START (b
) = pr
->adr
;
2029 /* BOUND used to be the end of procedure's text, but the
2030 argument is no longer passed in. */
2031 BLOCK_END (b
) = bound
;
2032 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2033 add_block (b
, top_stack
->cur_st
);
2037 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2041 struct mdebug_extra_func_info
*e
;
2043 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2046 /* GDB expects the absolute function start address for the
2047 procedure descriptor in e->pdr.adr.
2048 As the address in the procedure descriptor is usually relative,
2049 we would have to relocate e->pdr.adr with cur_fdr->adr and
2050 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2051 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2052 in shared libraries on some systems, and on other systems
2053 e->pdr.adr is sometimes offset by a bogus value.
2054 To work around these problems, we replace e->pdr.adr with
2055 the start address of the function. */
2056 e
->pdr
.adr
= BLOCK_START (b
);
2059 /* It would be reasonable that functions that have been compiled
2060 without debugging info have a btNil type for their return value,
2061 and functions that are void and are compiled with debugging info
2063 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2064 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2066 The glevel field in cur_fdr could be used to determine the presence
2067 of debugging info, but GCC doesn't always pass the -g switch settings
2068 to the assembler and GAS doesn't set the glevel field from the -g switch
2070 To work around these problems, the return value type of a TYPE_CODE_VOID
2071 function is adjusted accordingly if no debugging info was found in the
2072 compilation unit. */
2074 if (processing_gcc_compilation
== 0
2075 && found_ecoff_debugging_info
== 0
2076 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2077 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2080 /* Parse the external symbol ES. Just call parse_symbol() after
2081 making sure we know where the aux are for it.
2082 BIGEND says whether aux entries are big-endian or little-endian.
2084 This routine clobbers top_stack->cur_block and ->cur_st. */
2086 static void parse_external (EXTR
*, int, struct section_offsets
*,
2090 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2091 struct objfile
*objfile
)
2095 if (es
->ifd
!= ifdNil
)
2098 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2099 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2103 cur_fdr
= debug_info
->fdr
;
2107 /* Reading .o files */
2108 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2111 switch (es
->asym
.st
)
2114 /* These are generated for static symbols in .o files,
2135 /* FIXME: Turn this into a complaint? */
2137 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2138 what
, debug_info
->ssext
+ es
->asym
.iss
,
2139 fdr_name (cur_fdr
));
2143 switch (es
->asym
.st
)
2147 /* There is no need to parse the external procedure symbols.
2148 If they are from objects compiled without -g, their index will
2149 be indexNil, and the symbol definition from the minimal symbol
2150 is preferrable (yielding a function returning int instead of int).
2151 If the index points to a local procedure symbol, the local
2152 symbol already provides the correct type.
2153 Note that the index of the external procedure symbol points
2154 to the local procedure symbol in the local symbol table, and
2155 _not_ to the auxiliary symbol info. */
2159 /* Global common symbols are resolved by the runtime loader,
2161 if (SC_IS_COMMON (es
->asym
.sc
))
2164 /* Note that the case of a symbol with indexNil must be handled
2165 anyways by parse_symbol(). */
2166 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2167 bigend
, section_offsets
, objfile
);
2174 /* Parse the line number info for file descriptor FH into
2175 GDB's linetable LT. MIPS' encoding requires a little bit
2176 of magic to get things out. Note also that MIPS' line
2177 numbers can go back and forth, apparently we can live
2178 with that and do not need to reorder our linetables. */
2180 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2181 struct partial_symtab
*, CORE_ADDR
);
2184 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2185 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2187 unsigned char *base
;
2189 int delta
, count
, lineno
= 0;
2191 if (fh
->cbLine
== 0)
2194 /* Scan by procedure descriptors. */
2196 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2200 unsigned char *halt
;
2202 /* No code for this one. */
2203 if (pr
->iline
== ilineNil
||
2204 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2207 /* Determine start and end address of compressed line bytes for
2209 base
= debug_info
->line
+ fh
->cbLineOffset
;
2210 if (j
!= (fh
->cpd
- 1))
2211 halt
= base
+ pr
[1].cbLineOffset
;
2213 halt
= base
+ fh
->cbLine
;
2214 base
+= pr
->cbLineOffset
;
2216 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2218 l
= adr
>> 2; /* in words */
2219 for (lineno
= pr
->lnLow
; base
< halt
;)
2221 count
= *base
& 0x0f;
2222 delta
= *base
++ >> 4;
2227 delta
= (base
[0] << 8) | base
[1];
2228 if (delta
>= 0x8000)
2232 lineno
+= delta
; /* first delta is 0 */
2234 /* Complain if the line table overflows. Could happen
2235 with corrupt binaries. */
2236 if (lt
->nitems
>= maxlines
)
2238 complaint (&symfile_complaints
,
2239 _("guessed size of linetable for %s incorrectly"),
2243 k
= add_line (lt
, lineno
, l
, k
);
2250 function_outside_compilation_unit_complaint (const char *arg1
)
2252 complaint (&symfile_complaints
,
2253 _("function `%s' appears to be defined "
2254 "outside of all compilation units"),
2258 /* Use the STORAGE_CLASS to compute which section the given symbol
2259 belongs to, and then records this new minimal symbol. */
2262 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2263 enum minimal_symbol_type ms_type
, int storage_class
,
2264 struct objfile
*objfile
)
2268 switch (storage_class
)
2271 section
= SECT_OFF_TEXT (objfile
);
2274 section
= SECT_OFF_DATA (objfile
);
2277 section
= SECT_OFF_BSS (objfile
);
2280 section
= get_section_index (objfile
, ".sdata");
2283 section
= get_section_index (objfile
, ".sbss");
2286 section
= get_section_index (objfile
, ".rdata");
2289 section
= get_section_index (objfile
, ".init");
2292 section
= get_section_index (objfile
, ".xdata");
2295 section
= get_section_index (objfile
, ".pdata");
2298 section
= get_section_index (objfile
, ".fini");
2301 section
= get_section_index (objfile
, ".rconst");
2305 section
= get_section_index (objfile
, ".tlsdata");
2310 section
= get_section_index (objfile
, ".tlsbss");
2314 /* This kind of symbol is not associated to a section. */
2318 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2322 /* Master parsing procedure for first-pass reading of file symbols
2323 into a partial_symtab. */
2326 parse_partial_symbols (struct objfile
*objfile
)
2328 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2329 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2330 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2331 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2332 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2333 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2334 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2336 HDRR
*hdr
= &debug_info
->symbolic_header
;
2337 /* Running pointers */
2345 struct partial_symtab
*pst
;
2346 int textlow_not_set
= 1;
2348 /* List of current psymtab's include files. */
2349 const char **psymtab_include_list
;
2350 int includes_allocated
;
2353 struct pst_map
*fdr_to_pst
;
2354 /* Index within current psymtab dependency list. */
2355 struct partial_symtab
**dependency_list
;
2356 int dependencies_used
, dependencies_allocated
;
2357 struct cleanup
*old_chain
;
2359 enum language prev_language
;
2360 asection
*text_sect
;
2361 int relocatable
= 0;
2363 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2364 the shared libraries are prelinked at a high memory address.
2365 We have to adjust the start address of the object file for this case,
2366 by setting it to the start address of the first procedure in the file.
2367 But we should do no adjustments if we are debugging a .o file, where
2368 the text section (and fh->adr) really starts at zero. */
2369 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2370 if (text_sect
!= NULL
2371 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2374 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2375 sizeof (EXTR
) * hdr
->iextMax
);
2377 includes_allocated
= 30;
2379 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2380 sizeof (const char *));
2381 next_symbol_text_func
= mdebug_next_symbol_text
;
2383 dependencies_allocated
= 30;
2384 dependencies_used
= 0;
2386 (struct partial_symtab
**) alloca (dependencies_allocated
*
2387 sizeof (struct partial_symtab
*));
2389 set_last_source_file (NULL
);
2394 * Only parse the Local and External symbols, and the Relative FDR.
2395 * Fixup enough of the loader symtab to be able to use it.
2396 * Allocate space only for the file's portions we need to
2401 max_glevel
= MIN_GLEVEL
;
2403 /* Allocate the map FDR -> PST.
2404 Minor hack: -O3 images might claim some global data belongs
2405 to FDR -1. We`ll go along with that. */
2406 fdr_to_pst
= XCNEWVEC (struct pst_map
, hdr
->ifdMax
+ 1);
2407 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2410 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2412 fdr_to_pst
[-1].pst
= pst
;
2416 /* Allocate the global pending list. */
2418 ((struct mdebug_pending
**)
2419 obstack_alloc (&objfile
->objfile_obstack
,
2420 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2421 memset (pending_list
, 0,
2422 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2424 /* Pass 0 over external syms: swap them in. */
2425 ext_block
= XNEWVEC (EXTR
, hdr
->iextMax
);
2426 make_cleanup (xfree
, ext_block
);
2428 ext_out
= (char *) debug_info
->external_ext
;
2429 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2431 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2432 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2434 /* Pass 1 over external syms: Presize and partition the list. */
2436 ext_in_end
= ext_in
+ hdr
->iextMax
;
2437 for (; ext_in
< ext_in_end
; ext_in
++)
2439 /* See calls to complain below. */
2440 if (ext_in
->ifd
>= -1
2441 && ext_in
->ifd
< hdr
->ifdMax
2442 && ext_in
->asym
.iss
>= 0
2443 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2444 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2447 /* Pass 1.5 over files: partition out global symbol space. */
2449 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2451 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2452 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2453 fdr_to_pst
[f_idx
].n_globals
= 0;
2458 For ECOFF in ELF, we skip the creation of the minimal symbols.
2459 The ECOFF symbols should be a subset of the Elf symbols, and the
2460 section information of the elf symbols will be more accurate.
2461 FIXME! What about Irix 5's native linker?
2463 By default, Elf sections which don't exist in ECOFF
2464 get put in ECOFF's absolute section by the gnu linker.
2465 Since absolute sections don't get relocated, we
2466 end up calculating an address different from that of
2467 the symbol's minimal symbol (created earlier from the
2470 To fix this, either :
2471 1) don't create the duplicate symbol
2472 (assumes ECOFF symtab is a subset of the ELF symtab;
2473 assumes no side-effects result from ignoring ECOFF symbol)
2474 2) create it, only if lookup for existing symbol in ELF's minimal
2477 assumes no side-effects result from ignoring ECOFF symbol)
2478 3) create it, but lookup ELF's minimal symbol and use it's section
2479 during relocation, then modify "uniqify" phase to merge and
2480 eliminate the duplicate symbol
2481 (highly inefficient)
2483 I've implemented #1 here...
2484 Skip the creation of the minimal symbols based on the ECOFF
2487 /* Pass 2 over external syms: fill in external symbols. */
2489 ext_in_end
= ext_in
+ hdr
->iextMax
;
2490 for (; ext_in
< ext_in_end
; ext_in
++)
2492 enum minimal_symbol_type ms_type
= mst_text
;
2493 CORE_ADDR svalue
= ext_in
->asym
.value
;
2495 /* The Irix 5 native tools seem to sometimes generate bogus
2496 external symbols. */
2497 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2499 complaint (&symfile_complaints
,
2500 _("bad ifd for external symbol: %d (max %ld)"),
2501 ext_in
->ifd
, hdr
->ifdMax
);
2504 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2506 complaint (&symfile_complaints
,
2507 _("bad iss for external symbol: %ld (max %ld)"),
2508 ext_in
->asym
.iss
, hdr
->issExtMax
);
2512 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2513 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2516 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2520 /* Pass 3 over files, over local syms: fill in static symbols. */
2521 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2523 /* Process ECOFF Symbol Types and Storage Classes. */
2524 switch (ext_in
->asym
.st
)
2527 /* Beginnning of Procedure */
2530 /* Load time only static procs */
2531 ms_type
= mst_file_text
;
2534 /* External symbol */
2535 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2537 /* The value of a common symbol is its size, not its address.
2541 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2545 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2549 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2559 /* On certain platforms, some extra label symbols can be
2560 generated by the linker. One possible usage for this kind
2561 of symbols is to represent the address of the begining of a
2562 given section. For instance, on Tru64 5.1, the address of
2563 the _ftext label is the start address of the .text section.
2565 The storage class of these symbols is usually directly
2566 related to the section to which the symbol refers. For
2567 instance, on Tru64 5.1, the storage class for the _fdata
2568 label is scData, refering to the .data section.
2570 It is actually possible that the section associated to the
2571 storage class of the label does not exist. On True64 5.1
2572 for instance, the libm.so shared library does not contain
2573 any .data section, although it contains a _fpdata label
2574 which storage class is scData... Since these symbols are
2575 usually useless for the debugger user anyway, we just
2576 discard these symbols. */
2578 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2580 if (objfile
->sect_index_text
== -1)
2583 ms_type
= mst_file_text
;
2585 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2587 if (objfile
->sect_index_data
== -1)
2590 ms_type
= mst_file_data
;
2592 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2594 if (objfile
->sect_index_bss
== -1)
2597 ms_type
= mst_file_bss
;
2599 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2601 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2603 if (sbss_sect_index
== -1)
2606 ms_type
= mst_file_bss
;
2613 /* The alpha has the section start addresses in stLocal symbols
2614 whose name starts with a `.'. Skip those but complain for all
2615 other stLocal symbols.
2616 Irix6 puts the section start addresses in stNil symbols, skip
2622 ms_type
= mst_unknown
;
2623 unknown_ext_complaint (name
);
2625 if (!ECOFF_IN_ELF (cur_bfd
))
2626 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2630 /* Pass 3 over files, over local syms: fill in static symbols. */
2631 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2633 struct partial_symtab
*save_pst
;
2637 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2641 fdr_to_pst
[f_idx
].pst
= NULL
;
2645 /* Determine the start address for this object file from the
2646 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2650 if (relocatable
|| textlow
!= 0)
2651 textlow
+= ANOFFSET (objfile
->section_offsets
,
2652 SECT_OFF_TEXT (objfile
));
2656 pst
= start_psymtab_common (objfile
,
2659 objfile
->global_psymbols
.next
,
2660 objfile
->static_psymbols
.next
);
2661 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2662 sizeof (struct symloc
));
2663 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2666 FDR_IDX (pst
) = f_idx
;
2667 CUR_BFD (pst
) = cur_bfd
;
2668 DEBUG_SWAP (pst
) = debug_swap
;
2669 DEBUG_INFO (pst
) = debug_info
;
2670 PENDING_LIST (pst
) = pending_list
;
2672 /* The way to turn this into a symtab is to call... */
2673 pst
->read_symtab
= mdebug_read_symtab
;
2675 /* Set up language for the pst.
2676 The language from the FDR is used if it is unambigious (e.g. cfront
2677 with native cc and g++ will set the language to C).
2678 Otherwise we have to deduce the language from the filename.
2679 Native ecoff has every header file in a separate FDR, so
2680 deduce_language_from_filename will return language_unknown for
2681 a header file, which is not what we want.
2682 But the FDRs for the header files are after the FDR for the source
2683 file, so we can assign the language of the source file to the
2684 following header files. Then we save the language in the private
2685 pst data so that we can reuse it when building symtabs. */
2686 prev_language
= psymtab_language
;
2690 case langCplusplusV2
:
2691 psymtab_language
= language_cplus
;
2694 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2697 if (psymtab_language
== language_unknown
)
2698 psymtab_language
= prev_language
;
2699 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2701 pst
->texthigh
= pst
->textlow
;
2703 /* For stabs-in-ecoff files, the second symbol must be @stab.
2704 This symbol is emitted by mips-tfile to signal that the
2705 current object file uses encapsulated stabs instead of mips
2706 ecoff for local symbols. (It is the second symbol because
2707 the first symbol is the stFile used to signal the start of a
2709 processing_gcc_compilation
= 0;
2712 (*swap_sym_in
) (cur_bfd
,
2713 ((char *) debug_info
->external_sym
2714 + (fh
->isymBase
+ 1) * external_sym_size
),
2716 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2718 processing_gcc_compilation
= 2;
2721 if (processing_gcc_compilation
!= 0)
2723 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2726 const char *namestring
;
2728 (*swap_sym_in
) (cur_bfd
,
2729 (((char *) debug_info
->external_sym
)
2730 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2732 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2733 if (!ECOFF_IS_STAB (&sh
))
2735 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2740 if (sh
.st
== stStaticProc
)
2742 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2743 record_minimal_symbol (namestring
, sh
.value
,
2744 mst_file_text
, sh
.sc
,
2747 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2748 SECT_OFF_TEXT (objfile
));
2749 procaddr
= sh
.value
;
2751 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2752 (debug_info
->external_aux
2755 (*swap_sym_in
) (cur_bfd
,
2756 ((char *) debug_info
->external_sym
2757 + ((fh
->isymBase
+ isym
- 1)
2758 * external_sym_size
)),
2762 CORE_ADDR high
= procaddr
+ sh
.value
;
2764 /* Kludge for Irix 5.2 zero fh->adr. */
2766 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2767 pst
->textlow
= procaddr
;
2768 if (high
> pst
->texthigh
)
2769 pst
->texthigh
= high
;
2772 else if (sh
.st
== stStatic
)
2787 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2788 record_minimal_symbol (namestring
, sh
.value
,
2789 mst_file_data
, sh
.sc
,
2791 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2792 SECT_OFF_DATA (objfile
));
2796 /* FIXME! Shouldn't this use cases for bss,
2797 then have the default be abs? */
2798 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2799 record_minimal_symbol (namestring
, sh
.value
,
2800 mst_file_bss
, sh
.sc
,
2802 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2803 SECT_OFF_BSS (objfile
));
2809 /* Handle stabs continuation. */
2811 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2812 int len
= strlen (stabstring
);
2814 while (stabstring
[len
- 1] == '\\')
2817 char *stabstring1
= stabstring
;
2821 /* Ignore continuation char from 1st string. */
2824 /* Read next stabstring. */
2826 (*swap_sym_in
) (cur_bfd
,
2827 (((char *) debug_info
->external_sym
)
2828 + (fh
->isymBase
+ cur_sdx
)
2829 * external_sym_size
),
2831 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2832 len2
= strlen (stabstring2
);
2834 /* Concatinate stabstring2 with stabstring1. */
2836 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2838 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2841 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2842 strcpy (stabstring
, stabstring1
);
2844 strcpy (stabstring
+ len
, stabstring2
);
2852 /* Standard, external, non-debugger, symbols. */
2854 case N_TEXT
| N_EXT
:
2855 case N_NBTEXT
| N_EXT
:
2856 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2857 SECT_OFF_TEXT (objfile
));
2860 case N_DATA
| N_EXT
:
2861 case N_NBDATA
| N_EXT
:
2862 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2863 SECT_OFF_DATA (objfile
));
2868 case N_NBBSS
| N_EXT
:
2869 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2870 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2871 SECT_OFF_BSS (objfile
));
2878 /* Standard, local, non-debugger, symbols. */
2882 /* We need to be able to deal with both N_FN or
2883 N_TEXT, because we have no way of knowing
2884 whether the sys-supplied ld or GNU ld was used
2885 to make the executable. Sequents throw in
2886 another wrinkle -- they renumbered N_FN. */
2894 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2895 SECT_OFF_DATA (objfile
));
2898 case N_UNDF
| N_EXT
:
2899 continue; /* Just undefined, not COMMON. */
2904 /* Lots of symbol types we can just ignore. */
2911 /* Keep going . . . */
2914 * Special symbol types for GNU
2917 case N_INDR
| N_EXT
:
2919 case N_SETA
| N_EXT
:
2921 case N_SETT
| N_EXT
:
2923 case N_SETD
| N_EXT
:
2925 case N_SETB
| N_EXT
:
2935 static int prev_so_symnum
= -10;
2938 /* A zero value is probably an indication for the
2939 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2940 for zero, so don't relocate it. */
2943 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2944 textlow_not_set
= 1;
2946 textlow_not_set
= 0;
2948 if (prev_so_symnum
!= symnum
- 1)
2949 { /* Here if prev stab wasn't N_SO. */
2952 pst
= (struct partial_symtab
*) 0;
2954 dependencies_used
= 0;
2958 prev_so_symnum
= symnum
;
2960 /* End the current partial symtab and start a
2963 /* SET_NAMESTRING ();*/
2964 namestring
= stabstring
;
2966 /* Null name means end of .o file. Don't start a new
2968 if (*namestring
== '\000')
2971 /* Some compilers (including gcc) emit a pair of
2972 initial N_SOs. The first one is a directory name;
2973 the second the file name. If pst exists, is
2974 empty, and has a filename ending in '/', we assume
2975 the previous N_SO was a directory name. */
2976 p
= lbasename (namestring
);
2977 if (p
!= namestring
&& *p
== '\000')
2978 continue; /* Simply ignore directory
2981 /* Some other compilers (C++ ones in particular) emit
2982 useless SOs for non-existant .c files. We ignore
2983 all subsequent SOs that immediately follow the
2996 enum language tmp_language
;
2998 /* Mark down an include file in the current psymtab. */
3000 /* SET_NAMESTRING (); */
3001 namestring
= stabstring
;
3004 = deduce_language_from_filename (namestring
);
3006 /* Only change the psymtab's language if we've
3007 learned something useful (eg. tmp_language is not
3008 language_unknown). In addition, to match what
3009 start_subfile does, never change from C++ to
3011 if (tmp_language
!= language_unknown
3012 && (tmp_language
!= language_c
3013 || psymtab_language
!= language_cplus
))
3014 psymtab_language
= tmp_language
;
3016 /* In C++, one may expect the same filename to come
3017 round many times, when code is coming alternately
3018 from the main file and from inline functions in
3019 other files. So I check to see if this is a file
3020 we've seen before -- either the main source file,
3021 or a previously included file.
3023 This seems to be a lot of time to be spending on
3024 N_SOL, but things like "break c-exp.y:435" need to
3025 work (I suppose the psymtab_include_list could be
3026 hashed or put in a binary tree, if profiling shows
3027 this is a major hog). */
3028 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3034 for (i
= 0; i
< includes_used
; i
++)
3035 if (filename_cmp (namestring
,
3036 psymtab_include_list
[i
]) == 0)
3045 psymtab_include_list
[includes_used
++] = namestring
;
3046 if (includes_used
>= includes_allocated
)
3048 const char **orig
= psymtab_include_list
;
3050 psymtab_include_list
= (const char **)
3051 alloca ((includes_allocated
*= 2) *
3052 sizeof (const char *));
3053 memcpy (psymtab_include_list
, orig
,
3054 includes_used
* sizeof (const char *));
3058 case N_LSYM
: /* Typedef or automatic variable. */
3059 case N_STSYM
: /* Data seg var -- static */
3060 case N_LCSYM
: /* BSS " */
3061 case N_ROSYM
: /* Read-only data seg var -- static. */
3062 case N_NBSTS
: /* Gould nobase. */
3063 case N_NBLCS
: /* symbols. */
3065 case N_GSYM
: /* Global (extern) variable; can be
3066 data or bss (sigh FIXME). */
3068 /* Following may probably be ignored; I'll leave them here
3069 for now (until I do Pascal and Modula 2 extensions). */
3071 case N_PC
: /* I may or may not need this; I
3073 case N_M2C
: /* I suspect that I can ignore this
3075 case N_SCOPE
: /* Same. */
3077 /* SET_NAMESTRING (); */
3078 namestring
= stabstring
;
3079 p
= (char *) strchr (namestring
, ':');
3081 continue; /* Not a debugging symbol. */
3085 /* Main processing section for debugging symbols which
3086 the initial read through the symbol tables needs to
3087 worry about. If we reach this point, the symbol
3088 which we are considering is definitely one we are
3089 interested in. p must also contain the (valid)
3090 index into the namestring which indicates the
3091 debugging type symbol. */
3096 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3097 SECT_OFF_DATA (objfile
));
3099 if (gdbarch_static_transform_name_p (gdbarch
))
3100 namestring
= gdbarch_static_transform_name
3101 (gdbarch
, namestring
);
3103 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3104 VAR_DOMAIN
, LOC_STATIC
,
3105 &objfile
->static_psymbols
,
3107 psymtab_language
, objfile
);
3110 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3111 SECT_OFF_DATA (objfile
));
3112 /* The addresses in these entries are reported
3113 to be wrong. See the code that reads 'G's
3115 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3116 VAR_DOMAIN
, LOC_STATIC
,
3117 &objfile
->global_psymbols
,
3119 psymtab_language
, objfile
);
3123 /* When a 'T' entry is defining an anonymous enum, it
3124 may have a name which is the empty string, or a
3125 single space. Since they're not really defining a
3126 symbol, those shouldn't go in the partial symbol
3127 table. We do pick up the elements of such enums at
3128 'check_enum:', below. */
3129 if (p
>= namestring
+ 2
3130 || (p
== namestring
+ 1
3131 && namestring
[0] != ' '))
3133 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3134 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3135 &objfile
->static_psymbols
,
3136 0, psymtab_language
, objfile
);
3139 /* Also a typedef with the same name. */
3140 add_psymbol_to_list (namestring
,
3142 VAR_DOMAIN
, LOC_TYPEDEF
,
3143 &objfile
->static_psymbols
,
3144 0, psymtab_language
,
3151 if (p
!= namestring
) /* a name is there, not
3154 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3155 VAR_DOMAIN
, LOC_TYPEDEF
,
3156 &objfile
->static_psymbols
,
3157 0, psymtab_language
, objfile
);
3160 /* If this is an enumerated type, we need to add
3161 all the enum constants to the partial symbol
3162 table. This does not cover enums without names,
3163 e.g. "enum {a, b} c;" in C, but fortunately
3164 those are rare. There is no way for GDB to find
3165 those from the enum type without spending too
3166 much time on it. Thus to solve this problem,
3167 the compiler needs to put out the enum in a
3168 nameless type. GCC2 does this. */
3170 /* We are looking for something of the form
3171 <name> ":" ("t" | "T") [<number> "="] "e"
3172 {<constant> ":" <value> ","} ";". */
3174 /* Skip over the colon and the 't' or 'T'. */
3176 /* This type may be given a number. Also, numbers
3177 can come in pairs like (0,26). Skip over it. */
3178 while ((*p
>= '0' && *p
<= '9')
3179 || *p
== '(' || *p
== ',' || *p
== ')'
3185 /* The aix4 compiler emits extra crud before
3189 /* Skip over the type (?). */
3193 /* Skip over the colon. */
3197 /* We have found an enumerated type. */
3198 /* According to comments in read_enum_type
3199 a comma could end it instead of a semicolon.
3200 I don't know where that happens.
3202 while (*p
&& *p
!= ';' && *p
!= ',')
3206 /* Check for and handle cretinous dbx
3207 symbol name continuation! */
3208 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3209 p
= next_symbol_text (objfile
);
3211 /* Point to the character after the name
3212 of the enum constant. */
3213 for (q
= p
; *q
&& *q
!= ':'; q
++)
3215 /* Note that the value doesn't matter for
3216 enum constants in psymtabs, just in
3218 add_psymbol_to_list (p
, q
- p
, 1,
3219 VAR_DOMAIN
, LOC_CONST
,
3220 &objfile
->static_psymbols
,
3221 0, psymtab_language
,
3223 /* Point past the name. */
3225 /* Skip over the value. */
3226 while (*p
&& *p
!= ',')
3228 /* Advance past the comma. */
3235 /* Constant, e.g. from "const" in Pascal. */
3236 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3237 VAR_DOMAIN
, LOC_CONST
,
3238 &objfile
->static_psymbols
,
3239 0, psymtab_language
, objfile
);
3245 int name_len
= p
- namestring
;
3246 char *name
= (char *) xmalloc (name_len
+ 1);
3248 memcpy (name
, namestring
, name_len
);
3249 name
[name_len
] = '\0';
3250 function_outside_compilation_unit_complaint (name
);
3253 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3254 SECT_OFF_TEXT (objfile
));
3255 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3256 VAR_DOMAIN
, LOC_BLOCK
,
3257 &objfile
->static_psymbols
,
3259 psymtab_language
, objfile
);
3262 /* Global functions were ignored here, but now they
3263 are put into the global psymtab like one would
3264 expect. They're also in the minimal symbol
3269 int name_len
= p
- namestring
;
3270 char *name
= (char *) xmalloc (name_len
+ 1);
3272 memcpy (name
, namestring
, name_len
);
3273 name
[name_len
] = '\0';
3274 function_outside_compilation_unit_complaint (name
);
3277 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3278 SECT_OFF_TEXT (objfile
));
3279 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3280 VAR_DOMAIN
, LOC_BLOCK
,
3281 &objfile
->global_psymbols
,
3283 psymtab_language
, objfile
);
3286 /* Two things show up here (hopefully); static
3287 symbols of local scope (static used inside
3288 braces) or extensions of structure symbols. We
3303 case '#': /* For symbol identification (used
3308 /* It is a C++ nested symbol. We don't need to
3309 record it (I don't think); if we try to look up
3310 foo::bar::baz, then symbols for the symtab
3311 containing foo should get read in, I think. */
3312 /* Someone says sun cc puts out symbols like
3313 /foo/baz/maclib::/usr/local/bin/maclib,
3314 which would get here with a symbol type of ':'. */
3318 /* Unexpected symbol descriptor. The second and
3319 subsequent stabs of a continued stab can show up
3320 here. The question is whether they ever can
3321 mimic a normal stab--it would be nice if not,
3322 since we certainly don't want to spend the time
3323 searching to the end of every string looking for
3326 complaint (&symfile_complaints
,
3327 _("unknown symbol descriptor `%c'"), p
[1]);
3329 /* Ignore it; perhaps it is an extension that we don't
3338 /* Solaris 2 end of module, finish current partial
3339 symbol table. dbx_end_psymtab will set
3340 pst->texthigh to the proper value, which is
3341 necessary if a module compiled without
3342 debugging info follows this module. */
3344 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3346 pst
= (struct partial_symtab
*) 0;
3348 dependencies_used
= 0;
3353 if (sh
.value
> save_pst
->texthigh
)
3354 save_pst
->texthigh
= sh
.value
;
3359 case N_SSYM
: /* Claim: Structure or union
3360 element. Hopefully, I can
3362 case N_ENTRY
: /* Alternate entry point; can
3364 case N_MAIN
: /* Can definitely ignore this. */
3365 case N_CATCH
: /* These are GNU C++ extensions. */
3366 case N_EHDECL
: /* that can safely be ignored here. */
3376 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3377 case N_DEFD
: /* GNU Modula-2 */
3378 case N_ALIAS
: /* SunPro F77: alias name, ignore
3381 case N_OBJ
: /* Useless types from Solaris. */
3383 /* These symbols aren't interesting; don't worry about
3389 /* If we haven't found it yet, ignore it. It's
3390 probably some new type we don't know about yet. */
3391 complaint (&symfile_complaints
,
3392 _("unknown symbol type %s"),
3393 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3397 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3400 /* end - Handle continuation */
3405 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3408 enum address_class theclass
;
3409 CORE_ADDR minsym_value
;
3411 (*swap_sym_in
) (cur_bfd
,
3412 ((char *) debug_info
->external_sym
3413 + ((fh
->isymBase
+ cur_sdx
)
3414 * external_sym_size
)),
3417 if (ECOFF_IS_STAB (&sh
))
3423 /* Non absolute static symbols go into the minimal table. */
3424 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3425 || (sh
.index
== indexNil
3426 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3428 /* FIXME, premature? */
3433 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3435 minsym_value
= sh
.value
;
3441 /* The value of a stEnd symbol is the displacement from the
3442 corresponding start symbol value, do not relocate it. */
3444 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3445 SECT_OFF_TEXT (objfile
));
3452 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3453 SECT_OFF_DATA (objfile
));
3457 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3458 SECT_OFF_BSS (objfile
));
3469 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3471 SECT_OFF_TEXT (objfile
),
3477 /* Ignore all parameter symbol records. */
3478 if (sh
.index
>= hdr
->iauxMax
)
3480 /* Should not happen, but does when cross-compiling
3481 with the MIPS compiler. FIXME -- pull later. */
3482 index_complaint (name
);
3483 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3486 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3487 (debug_info
->external_aux
3491 if (new_sdx
<= cur_sdx
)
3493 /* This should not happen either... FIXME. */
3494 complaint (&symfile_complaints
,
3495 _("bad proc end in aux found from symbol %s"),
3497 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3500 /* For stProc symbol records, we need to check the
3501 storage class as well, as only (stProc, scText)
3502 entries represent "real" procedures - See the
3503 Compaq document titled "Object File / Symbol Table
3504 Format Specification" for more information. If the
3505 storage class is not scText, we discard the whole
3506 block of symbol records for this stProc. */
3507 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3510 /* Usually there is a local and a global stProc symbol
3511 for a function. This means that the function name
3512 has already been entered into the mimimal symbol table
3513 while processing the global symbols in pass 2 above.
3514 One notable exception is the PROGRAM name from
3515 f77 compiled executables, it is only put out as
3516 local stProc symbol, and a global MAIN__ stProc symbol
3517 points to it. It doesn't matter though, as gdb is
3518 still able to find the PROGRAM name via the partial
3519 symbol table, and the MAIN__ symbol via the minimal
3521 if (sh
.st
== stProc
)
3522 add_psymbol_to_list (name
, strlen (name
), 1,
3523 VAR_DOMAIN
, LOC_BLOCK
,
3524 &objfile
->global_psymbols
,
3525 sh
.value
, psymtab_language
, objfile
);
3527 add_psymbol_to_list (name
, strlen (name
), 1,
3528 VAR_DOMAIN
, LOC_BLOCK
,
3529 &objfile
->static_psymbols
,
3530 sh
.value
, psymtab_language
, objfile
);
3532 procaddr
= sh
.value
;
3535 (*swap_sym_in
) (cur_bfd
,
3536 ((char *) debug_info
->external_sym
3537 + ((fh
->isymBase
+ cur_sdx
- 1)
3538 * external_sym_size
)),
3543 /* Kludge for Irix 5.2 zero fh->adr. */
3545 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3546 pst
->textlow
= procaddr
;
3548 high
= procaddr
+ sh
.value
;
3549 if (high
> pst
->texthigh
)
3550 pst
->texthigh
= high
;
3553 case stStatic
: /* Variable */
3554 if (SC_IS_DATA (sh
.sc
))
3555 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3557 SECT_OFF_DATA (objfile
),
3560 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3562 SECT_OFF_BSS (objfile
),
3564 theclass
= LOC_STATIC
;
3567 case stIndirect
: /* Irix5 forward declaration */
3568 /* Skip forward declarations from Irix5 cc. */
3571 case stTypedef
: /* Typedef */
3572 /* Skip typedefs for forward declarations and opaque
3573 structs from alpha and mips cc. */
3574 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3576 theclass
= LOC_TYPEDEF
;
3579 case stConstant
: /* Constant decl */
3580 theclass
= LOC_CONST
;
3586 case stBlock
: /* { }, str, un, enum */
3587 /* Do not create a partial symbol for cc unnamed aggregates
3588 and gcc empty aggregates. */
3589 if ((sh
.sc
== scInfo
3590 || SC_IS_COMMON (sh
.sc
))
3592 && sh
.index
!= cur_sdx
+ 2)
3594 add_psymbol_to_list (name
, strlen (name
), 1,
3595 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3596 &objfile
->static_psymbols
,
3597 0, psymtab_language
, objfile
);
3599 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3601 /* Skip over the block. */
3603 if (new_sdx
<= cur_sdx
)
3605 /* This happens with the Ultrix kernel. */
3606 complaint (&symfile_complaints
,
3607 _("bad aux index at block symbol %s"), name
);
3608 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3613 case stFile
: /* File headers */
3614 case stLabel
: /* Labels */
3615 case stEnd
: /* Ends of files */
3618 case stLocal
: /* Local variables */
3619 /* Normally these are skipped because we skip over
3620 all blocks we see. However, these can occur
3621 as visible symbols in a .h file that contains code. */
3625 /* Both complaints are valid: one gives symbol name,
3626 the other the offending symbol type. */
3627 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3629 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3633 /* Use this gdb symbol. */
3634 add_psymbol_to_list (name
, strlen (name
), 1,
3635 VAR_DOMAIN
, theclass
,
3636 &objfile
->static_psymbols
,
3637 sh
.value
, psymtab_language
, objfile
);
3639 cur_sdx
++; /* Go to next file symbol. */
3642 /* Now do enter the external symbols. */
3643 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3644 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3645 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3646 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3647 for (; --cur_sdx
>= 0; ext_ptr
++)
3649 enum address_class theclass
;
3654 if (ext_ptr
->ifd
!= f_idx
)
3655 internal_error (__FILE__
, __LINE__
,
3656 _("failed internal consistency check"));
3657 psh
= &ext_ptr
->asym
;
3659 /* Do not add undefined symbols to the partial symbol table. */
3660 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3663 svalue
= psh
->value
;
3668 svalue
+= ANOFFSET (objfile
->section_offsets
,
3669 SECT_OFF_TEXT (objfile
));
3676 svalue
+= ANOFFSET (objfile
->section_offsets
,
3677 SECT_OFF_DATA (objfile
));
3681 svalue
+= ANOFFSET (objfile
->section_offsets
,
3682 SECT_OFF_BSS (objfile
));
3689 /* These are generated for static symbols in .o files,
3694 /* External procedure symbols have been entered
3695 into the minimal symbol table in pass 2 above.
3696 Ignore them, as parse_external will ignore them too. */
3699 theclass
= LOC_LABEL
;
3702 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3703 /* Fall through, pretend it's global. */
3705 /* Global common symbols are resolved by the runtime loader,
3707 if (SC_IS_COMMON (psh
->sc
))
3710 theclass
= LOC_STATIC
;
3713 name
= debug_info
->ssext
+ psh
->iss
;
3714 add_psymbol_to_list (name
, strlen (name
), 1,
3715 VAR_DOMAIN
, theclass
,
3716 &objfile
->global_psymbols
,
3717 svalue
, psymtab_language
, objfile
);
3721 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3722 empty and put on the free list. */
3723 fdr_to_pst
[f_idx
].pst
3724 = dbx_end_psymtab (objfile
, save_pst
,
3725 psymtab_include_list
, includes_used
,
3726 -1, save_pst
->texthigh
,
3727 dependency_list
, dependencies_used
,
3730 dependencies_used
= 0;
3732 /* The objfile has its functions reordered if this partial symbol
3733 table overlaps any other partial symbol table.
3734 We cannot assume a reordered objfile if a partial symbol table
3735 is contained within another partial symbol table, as partial symbol
3736 tables for include files with executable code are contained
3737 within the partial symbol table for the including source file,
3738 and we do not want to flag the objfile reordered for these cases.
3740 This strategy works well for Irix-5.2 shared libraries, but we
3741 might have to use a more elaborate (and slower) algorithm for
3743 save_pst
= fdr_to_pst
[f_idx
].pst
;
3744 if (save_pst
!= NULL
3745 && save_pst
->textlow
!= 0
3746 && !(objfile
->flags
& OBJF_REORDERED
))
3748 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3751 && save_pst
->textlow
>= pst
->textlow
3752 && save_pst
->textlow
< pst
->texthigh
3753 && save_pst
->texthigh
> pst
->texthigh
)
3755 objfile
->flags
|= OBJF_REORDERED
;
3762 /* Now scan the FDRs for dependencies. */
3763 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3765 fh
= f_idx
+ debug_info
->fdr
;
3766 pst
= fdr_to_pst
[f_idx
].pst
;
3768 if (pst
== (struct partial_symtab
*) NULL
)
3771 /* This should catch stabs-in-ecoff. */
3775 /* Skip the first file indirect entry as it is a self dependency for
3776 source files or a reverse .h -> .c dependency for header files. */
3777 pst
->number_of_dependencies
= 0;
3779 ((struct partial_symtab
**)
3780 obstack_alloc (&objfile
->objfile_obstack
,
3782 * sizeof (struct partial_symtab
*))));
3783 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3787 (*swap_rfd_in
) (cur_bfd
,
3788 ((char *) debug_info
->external_rfd
3789 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3791 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3793 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3797 /* Skip self dependencies of header files. */
3801 /* Do not add to dependeny list if psymtab was empty. */
3802 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3804 pst
->dependencies
[pst
->number_of_dependencies
++]
3805 = fdr_to_pst
[rh
].pst
;
3809 /* Remove the dummy psymtab created for -O3 images above, if it is
3810 still empty, to enable the detection of stripped executables. */
3811 if (objfile
->psymtabs
->next
== NULL
3812 && objfile
->psymtabs
->number_of_dependencies
== 0
3813 && objfile
->psymtabs
->n_global_syms
== 0
3814 && objfile
->psymtabs
->n_static_syms
== 0)
3815 objfile
->psymtabs
= NULL
;
3816 do_cleanups (old_chain
);
3819 /* If the current psymbol has an enumerated type, we need to add
3820 all the enum constants to the partial symbol table. */
3823 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3826 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3827 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3828 char *ext_sym
= ((char *) debug_info
->external_sym
3829 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3839 /* It is an enumerated type if the next symbol entry is a stMember
3840 and its auxiliary index is indexNil or its auxiliary entry
3841 is a plain btNil or btVoid.
3842 Alpha cc -migrate enums are recognized by a zero index and
3843 a zero symbol value.
3844 DU 4.0 cc enums are recognized by a member type of btEnum without
3845 qualifiers and a zero symbol value. */
3846 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3847 if (sh
.st
!= stMember
)
3850 if (sh
.index
== indexNil
3851 || (sh
.index
== 0 && svalue
== 0))
3853 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3854 &(debug_info
->external_aux
3855 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3857 if ((tir
.bt
!= btNil
3859 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3860 || tir
.tq0
!= tqNil
)
3872 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3873 if (sh
.st
!= stMember
)
3875 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3877 /* Note that the value doesn't matter for enum constants
3878 in psymtabs, just in symtabs. */
3879 add_psymbol_to_list (name
, strlen (name
), 1,
3880 VAR_DOMAIN
, LOC_CONST
,
3881 &objfile
->static_psymbols
,
3882 0, psymtab_language
, objfile
);
3883 ext_sym
+= external_sym_size
;
3887 /* Get the next symbol. OBJFILE is unused. */
3890 mdebug_next_symbol_text (struct objfile
*objfile
)
3895 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3896 ((char *) debug_info
->external_sym
3897 + ((cur_fdr
->isymBase
+ cur_sdx
)
3898 * debug_swap
->external_sym_size
)),
3900 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3903 /* Ancillary function to psymtab_to_symtab(). Does all the work
3904 for turning the partial symtab PST into a symtab, recurring
3905 first on all dependent psymtabs. The argument FILENAME is
3906 only passed so we can see in debug stack traces what file
3909 This function has a split personality, based on whether the
3910 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3911 The flow of control and even the memory allocation differs. FIXME. */
3914 psymtab_to_symtab_1 (struct objfile
*objfile
,
3915 struct partial_symtab
*pst
, const char *filename
)
3917 bfd_size_type external_sym_size
;
3918 bfd_size_type external_pdr_size
;
3919 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3920 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3922 struct compunit_symtab
*cust
= NULL
;
3924 struct linetable
*lines
;
3925 CORE_ADDR lowest_pdr_addr
= 0;
3926 int last_symtab_ended
= 0;
3927 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3933 /* Read in all partial symbtabs on which this one is dependent.
3934 NOTE that we do have circular dependencies, sigh. We solved
3935 that by setting pst->readin before this point. */
3937 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3938 if (!pst
->dependencies
[i
]->readin
)
3940 /* Inform about additional files to be read in. */
3943 fputs_filtered (" ", gdb_stdout
);
3945 fputs_filtered ("and ", gdb_stdout
);
3947 printf_filtered ("%s...",
3948 pst
->dependencies
[i
]->filename
);
3949 wrap_here (""); /* Flush output */
3950 gdb_flush (gdb_stdout
);
3952 /* We only pass the filename for debug purposes. */
3953 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3954 pst
->dependencies
[i
]->filename
);
3957 /* Do nothing if this is a dummy psymtab. */
3959 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3960 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3963 /* Now read the symbols for this symtab. */
3965 cur_bfd
= CUR_BFD (pst
);
3966 debug_swap
= DEBUG_SWAP (pst
);
3967 debug_info
= DEBUG_INFO (pst
);
3968 pending_list
= PENDING_LIST (pst
);
3969 external_sym_size
= debug_swap
->external_sym_size
;
3970 external_pdr_size
= debug_swap
->external_pdr_size
;
3971 swap_sym_in
= debug_swap
->swap_sym_in
;
3972 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3973 mdebugread_objfile
= objfile
;
3974 cur_fd
= FDR_IDX (pst
);
3975 fh
= ((cur_fd
== -1)
3977 : debug_info
->fdr
+ cur_fd
);
3980 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3981 processing_gcc_compilation
= 0;
3982 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3986 (*swap_sym_in
) (cur_bfd
,
3987 ((char *) debug_info
->external_sym
3988 + (fh
->isymBase
+ 1) * external_sym_size
),
3990 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3993 /* We indicate that this is a GCC compilation so that certain
3994 features will be enabled in stabsread/dbxread. */
3995 processing_gcc_compilation
= 2;
3999 if (processing_gcc_compilation
!= 0)
4001 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4003 /* This symbol table contains stabs-in-ecoff entries. */
4005 /* Parse local symbols first. */
4007 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
4009 mdebugread_objfile
= NULL
;
4012 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4018 (*swap_sym_in
) (cur_bfd
,
4019 (((char *) debug_info
->external_sym
)
4020 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4022 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4024 /* XXX This is a hack. It will go away! */
4025 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4027 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4029 /* We should never get non N_STAB symbols here, but they
4030 should be harmless, so keep process_one_symbol from
4031 complaining about them. */
4032 if (type_code
& N_STAB
)
4034 /* If we found a trailing N_SO with no name, process
4035 it here instead of in process_one_symbol, so we
4036 can keep a handle to its symtab. The symtab
4037 would otherwise be ended twice, once in
4038 process_one_symbol, and once after this loop. */
4039 if (type_code
== N_SO
4040 && get_last_source_file ()
4041 && previous_stab_code
!= (unsigned char) N_SO
4044 valu
+= ANOFFSET (section_offsets
,
4045 SECT_OFF_TEXT (objfile
));
4046 previous_stab_code
= N_SO
;
4047 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4049 last_symtab_ended
= 1;
4053 last_symtab_ended
= 0;
4054 process_one_symbol (type_code
, 0, valu
, name
,
4055 section_offsets
, objfile
);
4058 /* Similarly a hack. */
4059 else if (name
[0] == '#')
4061 process_one_symbol (N_SLINE
, 0, valu
, name
,
4062 section_offsets
, objfile
);
4064 if (type_code
== N_FUN
)
4066 /* Make up special symbol to contain
4067 procedure specific info. */
4068 struct mdebug_extra_func_info
*e
=
4069 ((struct mdebug_extra_func_info
*)
4070 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4071 sizeof (struct mdebug_extra_func_info
)));
4072 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4074 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4075 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4076 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4077 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4078 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4079 e
->pdr
.framereg
= -1;
4080 add_symbol_to_list (s
, &local_symbols
);
4083 else if (sh
.st
== stLabel
)
4085 if (sh
.index
== indexNil
)
4087 /* This is what the gcc2_compiled and __gnu_compiled_*
4088 show up as. So don't complain. */
4093 /* Handle encoded stab line number. */
4094 valu
+= ANOFFSET (section_offsets
,
4095 SECT_OFF_TEXT (objfile
));
4096 record_line (current_subfile
, sh
.index
,
4097 gdbarch_addr_bits_remove (gdbarch
, valu
));
4100 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4101 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4102 /* These are generated by gcc-2.x, do not complain. */
4105 complaint (&symfile_complaints
,
4106 _("unknown stabs symbol %s"), name
);
4109 if (! last_symtab_ended
)
4111 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4115 /* There used to be a call to sort_blocks here, but this should not
4116 be necessary for stabs symtabs. And as sort_blocks modifies the
4117 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4118 it did the wrong thing if the first procedure in a file was
4119 generated via asm statements. */
4121 /* Fill in procedure info next. */
4125 struct cleanup
*old_chain
;
4131 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4132 old_chain
= make_cleanup (xfree
, pr_block
);
4134 pdr_ptr
= ((char *) debug_info
->external_pdr
4135 + fh
->ipdFirst
* external_pdr_size
);
4136 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4140 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4142 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4144 /* Determine lowest PDR address, the PDRs are not always
4146 if (pdr_in
== pr_block
)
4147 lowest_pdr_addr
= pdr_in
->adr
;
4148 else if (pdr_in
->adr
< lowest_pdr_addr
)
4149 lowest_pdr_addr
= pdr_in
->adr
;
4153 pdr_in_end
= pdr_in
+ fh
->cpd
;
4154 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4155 parse_procedure (pdr_in
, cust
, pst
);
4157 do_cleanups (old_chain
);
4162 /* This symbol table contains ordinary ecoff entries. */
4170 cust
= new_symtab ("unknown", 0, objfile
);
4174 maxlines
= 2 * fh
->cline
;
4175 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4177 /* The proper language was already determined when building
4178 the psymtab, use it. */
4179 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4182 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4184 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4186 /* Get a new lexical context. */
4188 push_parse_stack ();
4189 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4190 top_stack
->cur_block
4191 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4192 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4193 BLOCK_END (top_stack
->cur_block
) = 0;
4194 top_stack
->blocktype
= stFile
;
4195 top_stack
->cur_type
= 0;
4196 top_stack
->procadr
= 0;
4197 top_stack
->numargs
= 0;
4198 found_ecoff_debugging_info
= 0;
4205 /* Parse local symbols first. */
4206 sym_ptr
= ((char *) debug_info
->external_sym
4207 + fh
->isymBase
* external_sym_size
);
4208 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4209 while (sym_ptr
< sym_end
)
4214 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4215 c
= parse_symbol (&sh
,
4216 debug_info
->external_aux
+ fh
->iauxBase
,
4217 sym_ptr
, fh
->fBigendian
,
4218 section_offsets
, objfile
);
4219 sym_ptr
+= c
* external_sym_size
;
4222 /* Linenumbers. At the end, check if we can save memory.
4223 parse_lines has to look ahead an arbitrary number of PDR
4224 structures, so we swap them all first. */
4228 struct cleanup
*old_chain
;
4234 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4236 old_chain
= make_cleanup (xfree
, pr_block
);
4238 pdr_ptr
= ((char *) debug_info
->external_pdr
4239 + fh
->ipdFirst
* external_pdr_size
);
4240 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4244 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4246 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4248 /* Determine lowest PDR address, the PDRs are not always
4250 if (pdr_in
== pr_block
)
4251 lowest_pdr_addr
= pdr_in
->adr
;
4252 else if (pdr_in
->adr
< lowest_pdr_addr
)
4253 lowest_pdr_addr
= pdr_in
->adr
;
4256 parse_lines (fh
, pr_block
, lines
, maxlines
,
4257 pst
, lowest_pdr_addr
);
4258 if (lines
->nitems
< fh
->cline
)
4259 lines
= shrink_linetable (lines
);
4261 /* Fill in procedure info next. */
4263 pdr_in_end
= pdr_in
+ fh
->cpd
;
4264 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4265 parse_procedure (pdr_in
, NULL
, pst
);
4267 do_cleanups (old_chain
);
4271 size
= lines
->nitems
;
4274 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4275 = ((struct linetable
*)
4276 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4277 lines
, (sizeof (struct linetable
)
4278 + size
* sizeof (lines
->item
))));
4281 /* .. and our share of externals.
4282 XXX use the global list to speed up things here. How?
4283 FIXME, Maybe quit once we have found the right number of ext's? */
4284 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4285 top_stack
->cur_block
4286 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4288 top_stack
->blocktype
= stFile
;
4290 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4291 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4292 parse_external (ext_ptr
, fh
->fBigendian
,
4293 section_offsets
, objfile
);
4295 /* If there are undefined symbols, tell the user.
4296 The alpha has an undefined symbol for every symbol that is
4297 from a shared library, so tell the user only if verbose is on. */
4298 if (info_verbose
&& n_undef_symbols
)
4300 printf_filtered (_("File %s contains %d unresolved references:"),
4301 symtab_to_filename_for_display
4302 (COMPUNIT_FILETABS (cust
)),
4304 printf_filtered ("\n\t%4d variables\n\t%4d "
4305 "procedures\n\t%4d labels\n",
4306 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4307 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4312 sort_blocks (COMPUNIT_FILETABS (cust
));
4315 /* Now link the psymtab and the symtab. */
4316 pst
->compunit_symtab
= cust
;
4318 mdebugread_objfile
= NULL
;
4321 /* Ancillary parsing procedures. */
4323 /* Return 1 if the symbol pointed to by SH has a cross reference
4324 to an opaque aggregate type, else 0. */
4327 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4334 if (sh
->index
== indexNil
)
4337 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4338 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4339 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4343 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4344 if (rn
->rfd
== 0xfff)
4345 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4353 /* Lookup the type at relative index RN. Return it in TPP
4354 if found and in any event come up with its name PNAME.
4355 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4356 Return value says how many aux symbols we ate. */
4359 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4360 enum type_code type_code
,
4361 /* Use to alloc new type if none is found. */
4362 char **pname
, int bigend
, char *sym_name
)
4371 struct mdebug_pending
*pend
;
4375 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4377 /* Escape index means 'the next one'. */
4378 if (rn
->rfd
== 0xfff)
4381 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4388 /* mips cc uses a rf of -1 for opaque struct definitions.
4389 Set TYPE_STUB for these types so that check_typedef will
4390 resolve them if the struct gets defined in another compilation unit. */
4393 *pname
= "<undefined>";
4394 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4395 TYPE_STUB (*tpp
) = 1;
4399 /* mips cc uses an escaped rn->index of 0 for struct return types
4400 of procedures that were compiled without -g. These will always remain
4402 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4404 *pname
= "<undefined>";
4408 /* Find the relative file descriptor and the symbol in it. */
4409 fh
= get_rfd (fd
, rf
);
4410 xref_fd
= fh
- debug_info
->fdr
;
4412 if (rn
->index
>= fh
->csym
)
4414 /* File indirect entry is corrupt. */
4415 *pname
= "<illegal>";
4416 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4420 /* If we have processed this symbol then we left a forwarding
4421 pointer to the type in the pending list. If not, we`ll put
4422 it in a list of pending types, to be processed later when
4423 the file will be. In any event, we collect the name for the
4426 esh
= ((char *) debug_info
->external_sym
4427 + ((fh
->isymBase
+ rn
->index
)
4428 * debug_swap
->external_sym_size
));
4429 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4431 /* Make sure that this type of cross reference can be handled. */
4432 if ((sh
.sc
!= scInfo
4433 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4434 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4435 && sh
.st
!= stEnum
))
4436 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4438 /* File indirect entry is corrupt. */
4439 *pname
= "<illegal>";
4440 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4444 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4446 pend
= is_pending_symbol (fh
, esh
);
4451 /* We have not yet seen this type. */
4453 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4457 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4459 a) forward declarations of structs/unions/enums which are not
4460 defined in this compilation unit.
4461 For these the type will be void. This is a bad design decision
4462 as cross referencing across compilation units is impossible
4463 due to the missing name.
4464 b) forward declarations of structs/unions/enums/typedefs which
4465 are defined later in this file or in another file in the same
4466 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4467 Simply cross reference those again to get the true type.
4468 The forward references are not entered in the pending list and
4469 in the symbol table. */
4471 (*debug_swap
->swap_tir_in
) (bigend
,
4472 &(debug_info
->external_aux
4473 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4475 if (tir
.tq0
!= tqNil
)
4476 complaint (&symfile_complaints
,
4477 _("illegal tq0 in forward typedef for %s"), sym_name
);
4481 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4482 *pname
= "<undefined>";
4489 (debug_info
->external_aux
4490 + fh
->iauxBase
+ sh
.index
+ 1),
4491 tpp
, type_code
, pname
,
4492 fh
->fBigendian
, sym_name
);
4496 /* Follow a forward typedef. This might recursively
4497 call cross_ref till we get a non typedef'ed type.
4498 FIXME: This is not correct behaviour, but gdb currently
4499 cannot handle typedefs without type copying. Type
4500 copying is impossible as we might have mutual forward
4501 references between two files and the copied type would not
4502 get filled in when we later parse its definition. */
4503 *tpp
= parse_type (xref_fd
,
4504 debug_info
->external_aux
+ fh
->iauxBase
,
4508 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4509 add_pending (fh
, esh
, *tpp
);
4513 complaint (&symfile_complaints
,
4514 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4516 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4521 else if (sh
.st
== stTypedef
)
4523 /* Parse the type for a normal typedef. This might recursively call
4524 cross_ref till we get a non typedef'ed type.
4525 FIXME: This is not correct behaviour, but gdb currently
4526 cannot handle typedefs without type copying. But type copying is
4527 impossible as we might have mutual forward references between
4528 two files and the copied type would not get filled in when
4529 we later parse its definition. */
4530 *tpp
= parse_type (xref_fd
,
4531 debug_info
->external_aux
+ fh
->iauxBase
,
4535 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4539 /* Cross reference to a struct/union/enum which is defined
4540 in another file in the same compilation unit but that file
4541 has not been parsed yet.
4542 Initialize the type only, it will be filled in when
4543 it's definition is parsed. */
4544 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4546 add_pending (fh
, esh
, *tpp
);
4549 /* We used one auxent normally, two if we got a "next one" rf. */
4554 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4555 keeping the symtab sorted. */
4557 static struct symbol
*
4558 mylookup_symbol (char *name
, const struct block
*block
,
4559 domain_enum domain
, enum address_class theclass
)
4561 struct block_iterator iter
;
4566 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4568 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4569 && SYMBOL_DOMAIN (sym
) == domain
4570 && SYMBOL_CLASS (sym
) == theclass
4571 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4575 block
= BLOCK_SUPERBLOCK (block
);
4577 return mylookup_symbol (name
, block
, domain
, theclass
);
4582 /* Add a new symbol S to a block B. */
4585 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4587 symbol_set_symtab (s
, symtab
);
4588 dict_add_symbol (BLOCK_DICT (b
), s
);
4591 /* Add a new block B to a symtab S. */
4594 add_block (struct block
*b
, struct symtab
*s
)
4596 /* Cast away "const", but that's ok because we're building the
4597 symtab and blockvector here. */
4598 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4600 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4601 (sizeof (struct blockvector
)
4602 + BLOCKVECTOR_NBLOCKS (bv
)
4603 * sizeof (bv
->block
)));
4604 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4605 SYMTAB_BLOCKVECTOR (s
) = bv
;
4607 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4610 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4611 MIPS' linenumber encoding might need more than one byte
4612 to describe it, LAST is used to detect these continuation lines.
4614 Combining lines with the same line number seems like a bad idea.
4615 E.g: There could be a line number entry with the same line number after the
4616 prologue and GDB should not ignore it (this is a better way to find
4617 a prologue than mips_skip_prologue).
4618 But due to the compressed line table format there are line number entries
4619 for the same line which are needed to bridge the gap to the next
4620 line number entry. These entries have a bogus address info with them
4621 and we are unable to tell them from intended duplicate line number
4623 This is another reason why -ggdb debugging format is preferable. */
4626 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4628 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4629 Change them to something sensible. */
4633 last
= -2; /* Make sure we record first line. */
4635 if (last
== lineno
) /* Skip continuation lines. */
4638 lt
->item
[lt
->nitems
].line
= lineno
;
4639 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4643 /* Sorting and reordering procedures. */
4645 /* Blocks with a smaller low bound should come first. */
4648 compare_blocks (const void *arg1
, const void *arg2
)
4651 struct block
**b1
= (struct block
**) arg1
;
4652 struct block
**b2
= (struct block
**) arg2
;
4654 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4656 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4660 /* Sort the blocks of a symtab S.
4661 Reorder the blocks in the blockvector by code-address,
4662 as required by some MI search routines. */
4665 sort_blocks (struct symtab
*s
)
4667 /* We have to cast away const here, but this is ok because we're
4668 constructing the blockvector in this code. */
4669 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4671 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4674 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4675 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4676 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4677 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4681 * This is very unfortunate: normally all functions are compiled in
4682 * the order they are found, but if the file is compiled -O3 things
4683 * are very different. It would be nice to find a reliable test
4684 * to detect -O3 images in advance.
4686 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4687 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4688 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4689 sizeof (struct block
*),
4694 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4696 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4697 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4698 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4699 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4702 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4703 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4705 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4706 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4707 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4708 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4712 /* Constructor/restructor/destructor procedures. */
4714 /* Allocate a new symtab for NAME. Needs an estimate of how many
4715 linenumbers MAXLINES we'll put in it. */
4717 static struct compunit_symtab
*
4718 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4720 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4721 struct symtab
*symtab
;
4722 struct blockvector
*bv
;
4724 add_compunit_symtab_to_objfile (cust
);
4725 symtab
= allocate_symtab (cust
, name
);
4727 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4729 /* All symtabs must have at least two blocks. */
4731 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4732 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4733 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4734 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4735 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4737 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4741 /* Allocate a new partial_symtab NAME. */
4743 static struct partial_symtab
*
4744 new_psymtab (char *name
, struct objfile
*objfile
)
4746 struct partial_symtab
*psymtab
;
4748 psymtab
= allocate_psymtab (name
, objfile
);
4750 /* Keep a backpointer to the file's symbols. */
4752 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4753 sizeof (struct symloc
));
4754 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4755 CUR_BFD (psymtab
) = cur_bfd
;
4756 DEBUG_SWAP (psymtab
) = debug_swap
;
4757 DEBUG_INFO (psymtab
) = debug_info
;
4758 PENDING_LIST (psymtab
) = pending_list
;
4760 /* The way to turn this into a symtab is to call... */
4761 psymtab
->read_symtab
= mdebug_read_symtab
;
4766 /* Allocate a linetable array of the given SIZE. Since the struct
4767 already includes one item, we subtract one when calculating the
4768 proper size to allocate. */
4770 static struct linetable
*
4771 new_linetable (int size
)
4773 struct linetable
*l
;
4777 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4778 l
= (struct linetable
*) xmalloc (size
);
4783 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4784 I am not so sure about the 3.4 ones.
4786 Since the struct linetable already includes one item, we subtract one when
4787 calculating the proper size to allocate. */
4789 static struct linetable
*
4790 shrink_linetable (struct linetable
*lt
)
4792 return (struct linetable
*) xrealloc ((void *) lt
,
4793 (sizeof (struct linetable
)
4795 * sizeof (lt
->item
))));
4798 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4800 static struct blockvector
*
4801 new_bvect (int nblocks
)
4803 struct blockvector
*bv
;
4806 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4807 bv
= (struct blockvector
*) xzalloc (size
);
4809 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4814 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4815 is non-zero, assume the block is associated to a function, and make
4816 sure that the symbols are stored linearly; otherwise, store them
4819 static struct block
*
4820 new_block (enum block_type type
)
4822 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4823 allocate the block. Which, in turn, suggests that the block
4824 should be allocated on an obstack. */
4825 struct block
*retval
= XCNEW (struct block
);
4827 if (type
== FUNCTION_BLOCK
)
4828 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4830 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4835 /* Create a new symbol with printname NAME. */
4837 static struct symbol
*
4838 new_symbol (char *name
)
4840 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4842 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4843 &mdebugread_objfile
->objfile_obstack
);
4844 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4848 /* Create a new type with printname NAME. */
4850 static struct type
*
4851 new_type (char *name
)
4855 t
= alloc_type (mdebugread_objfile
);
4856 TYPE_NAME (t
) = name
;
4857 INIT_CPLUS_SPECIFIC (t
);
4861 /* Read ECOFF debugging information from a BFD section. This is
4862 called from elfread.c. It parses the section into a
4863 ecoff_debug_info struct, and then lets the rest of the file handle
4867 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4868 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4870 bfd
*abfd
= objfile
->obfd
;
4871 struct ecoff_debug_info
*info
;
4872 struct cleanup
*back_to
;
4874 /* FIXME: It's not clear whether we should be getting minimal symbol
4875 information from .mdebug in an ELF file, or whether we will.
4876 Re-initialize the minimal symbol reader in case we do. */
4878 init_minimal_symbol_collection ();
4879 back_to
= make_cleanup_discard_minimal_symbols ();
4881 info
= ((struct ecoff_debug_info
*)
4882 obstack_alloc (&objfile
->objfile_obstack
,
4883 sizeof (struct ecoff_debug_info
)));
4885 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4886 error (_("Error reading ECOFF debugging information: %s"),
4887 bfd_errmsg (bfd_get_error ()));
4889 mdebug_build_psymtabs (objfile
, swap
, info
);
4891 install_minimal_symbols (objfile
);
4892 do_cleanups (back_to
);
4896 _initialize_mdebugread (void)
4898 basic_type_data
= register_objfile_data ();
4900 mdebug_register_index
4901 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4902 mdebug_regparm_index
4903 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);