1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2015 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
;
571 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
572 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
574 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
575 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
576 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
580 struct mdebug_pending
*pend
;
584 enum address_class theclass
;
586 long svalue
= sh
->value
;
589 if (ext_sh
== (char *) NULL
)
590 name
= debug_info
->ssext
+ sh
->iss
;
592 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
598 /* Do not relocate relative values.
599 The value of a stEnd symbol is the displacement from the
600 corresponding start symbol value.
601 The value of a stBlock symbol is the displacement from the
602 procedure address. */
603 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
604 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
611 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
615 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
624 case stGlobal
: /* External symbol, goes into global block. */
625 theclass
= LOC_STATIC
;
626 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
628 s
= new_symbol (name
);
629 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
632 case stStatic
: /* Static data, goes into current block. */
633 theclass
= LOC_STATIC
;
634 b
= top_stack
->cur_block
;
635 s
= new_symbol (name
);
636 if (SC_IS_COMMON (sh
->sc
))
638 /* It is a FORTRAN common block. At least for SGI Fortran the
639 address is not in the symbol; we need to fix it later in
640 scan_file_globals. */
641 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
642 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
643 global_sym_chain
[bucket
] = s
;
646 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
649 case stLocal
: /* Local variable, goes into current block. */
650 b
= top_stack
->cur_block
;
651 s
= new_symbol (name
);
652 SYMBOL_VALUE (s
) = svalue
;
653 if (sh
->sc
== scRegister
)
654 theclass
= mdebug_register_index
;
656 theclass
= LOC_LOCAL
;
658 data
: /* Common code for symbols describing data. */
659 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
660 SYMBOL_ACLASS_INDEX (s
) = theclass
;
661 add_symbol (s
, top_stack
->cur_st
, b
);
663 /* Type could be missing if file is compiled without debugging info. */
664 if (SC_IS_UNDEF (sh
->sc
)
665 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
666 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
668 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
669 /* Value of a data symbol is its memory address. */
672 case stParam
: /* Arg to procedure, goes into current
675 found_ecoff_debugging_info
= 1;
676 top_stack
->numargs
++;
678 /* Special GNU C++ name. */
679 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
680 name
= "this"; /* FIXME, not alloc'd in obstack. */
681 s
= new_symbol (name
);
683 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
684 SYMBOL_IS_ARGUMENT (s
) = 1;
688 /* Pass by value in register. */
689 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
692 /* Pass by reference on stack. */
693 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
696 /* Pass by reference in register. */
697 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
700 /* Pass by value on stack. */
701 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
704 SYMBOL_VALUE (s
) = svalue
;
705 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
706 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
709 case stLabel
: /* label, goes into current block. */
710 s
= new_symbol (name
);
711 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
712 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
713 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
714 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
715 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
718 case stProc
: /* Procedure, usually goes into global block. */
719 case stStaticProc
: /* Static procedure, goes into current block. */
720 /* For stProc symbol records, we need to check the storage class
721 as well, as only (stProc, scText) entries represent "real"
722 procedures - See the Compaq document titled "Object File /
723 Symbol Table Format Specification" for more information.
724 If the storage class is not scText, we discard the whole block
725 of symbol records for this stProc. */
726 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
728 char *ext_tsym
= ext_sh
;
729 int keep_counting
= 1;
732 while (keep_counting
)
734 ext_tsym
+= external_sym_size
;
735 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
745 complaint (&symfile_complaints
,
746 _("unknown symbol type 0x%x"), sh
->st
);
752 s
= new_symbol (name
);
753 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
754 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
755 /* Type of the return value. */
756 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
757 t
= objfile_type (objfile
)->builtin_int
;
760 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
761 if (strcmp (name
, "malloc") == 0
762 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
764 /* I don't know why, but, at least under Alpha GNU/Linux,
765 when linking against a malloc without debugging
766 symbols, its read as a function returning void---this
767 is bad because it means we cannot call functions with
768 string arguments interactively; i.e., "call
769 printf("howdy\n")" would fail with the error message
770 "program has no memory available". To avoid this, we
771 patch up the type and make it void*
772 instead. (davidm@azstarnet.com). */
773 t
= make_pointer_type (t
, NULL
);
776 b
= top_stack
->cur_block
;
777 if (sh
->st
== stProc
)
779 const struct blockvector
*bv
780 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
782 /* The next test should normally be true, but provides a
783 hook for nested functions (which we don't want to make
785 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
786 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
787 /* Irix 5 sometimes has duplicate names for the same
788 function. We want to add such names up at the global
789 level, not as a nested function. */
790 else if (sh
->value
== top_stack
->procadr
)
791 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
793 add_symbol (s
, top_stack
->cur_st
, b
);
795 /* Make a type for the procedure itself. */
796 SYMBOL_TYPE (s
) = lookup_function_type (t
);
798 /* All functions in C++ have prototypes. For C we don't have enough
799 information in the debug info. */
800 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
801 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
803 /* Create and enter a new lexical context. */
804 b
= new_block (FUNCTION_BLOCK
);
805 SYMBOL_BLOCK_VALUE (s
) = b
;
806 BLOCK_FUNCTION (b
) = s
;
807 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
808 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
809 add_block (b
, top_stack
->cur_st
);
811 /* Not if we only have partial info. */
812 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
816 top_stack
->cur_block
= b
;
817 top_stack
->blocktype
= sh
->st
;
818 top_stack
->cur_type
= SYMBOL_TYPE (s
);
819 top_stack
->cur_field
= -1;
820 top_stack
->procadr
= sh
->value
;
821 top_stack
->numargs
= 0;
824 /* Beginning of code for structure, union, and enum definitions.
825 They all share a common set of local variables, defined here. */
827 enum type_code type_code
;
833 case stStruct
: /* Start a block defining a struct type. */
834 type_code
= TYPE_CODE_STRUCT
;
835 goto structured_common
;
837 case stUnion
: /* Start a block defining a union type. */
838 type_code
= TYPE_CODE_UNION
;
839 goto structured_common
;
841 case stEnum
: /* Start a block defining an enum type. */
842 type_code
= TYPE_CODE_ENUM
;
843 goto structured_common
;
845 case stBlock
: /* Either a lexical block, or some type. */
846 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
847 goto case_stBlock_code
; /* Lexical block */
849 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
851 /* Common code for handling struct, union, enum, and/or as-yet-
852 unknown-type blocks of info about structured data. `type_code'
853 has been set to the proper TYPE_CODE, if we know it. */
855 found_ecoff_debugging_info
= 1;
857 top_stack
->blocktype
= stBlock
;
859 /* First count the number of fields and the highest value. */
862 for (ext_tsym
= ext_sh
+ external_sym_size
;
864 ext_tsym
+= external_sym_size
)
868 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
873 /* C++ encodes class types as structures where there the
874 methods are encoded as stProc. The scope of stProc
875 symbols also ends with stEnd, thus creating a risk of
876 taking the wrong stEnd symbol record as the end of
877 the current struct, which would cause GDB to undercount
878 the real number of fields in this struct. To make sure
879 we really reached the right stEnd symbol record, we
880 check the associated name, and match it against the
881 struct name. Since method names are mangled while
882 the class name is not, there is no risk of having a
883 method whose name is identical to the class name
884 (in particular constructor method names are different
885 from the class name). There is therefore no risk that
886 this check stops the count on the StEnd of a method.
888 Also, assume that we're really at the end when tsym.iss
890 if (tsym
.iss
== issNull
891 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
897 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
899 /* If the type of the member is Nil (or Void),
900 without qualifiers, assume the tag is an
902 Alpha cc -migrate enums are recognized by a zero
903 index and a zero symbol value.
904 DU 4.0 cc enums are recognized by a member type of
905 btEnum without qualifiers and a zero symbol value. */
906 if (tsym
.index
== indexNil
907 || (tsym
.index
== 0 && sh
->value
== 0))
908 type_code
= TYPE_CODE_ENUM
;
911 (*debug_swap
->swap_tir_in
) (bigend
,
912 &ax
[tsym
.index
].a_ti
,
914 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
915 || (tir
.bt
== btEnum
&& sh
->value
== 0))
917 type_code
= TYPE_CODE_ENUM
;
921 if (tsym
.value
> max_value
)
922 max_value
= tsym
.value
;
931 /* This is a no-op; is it trying to tell us something
932 we should be checking? */
933 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
937 /* This is something like a struct within a
938 struct. Skip over the fields of the inner
939 struct. The -1 is because the for loop will
940 increment ext_tsym. */
941 ext_tsym
= ((char *) debug_info
->external_sym
942 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
943 * external_sym_size
));
949 /* mips cc puts out a typedef for struct x if it is not yet
950 defined when it encounters
951 struct y { struct x *xp; };
956 /* Irix5 cc puts out a stIndirect for struct x if it is not
957 yet defined when it encounters
958 struct y { struct x *xp; };
963 complaint (&symfile_complaints
,
964 _("declaration block contains "
965 "unhandled symbol type %d"),
971 /* In an stBlock, there is no way to distinguish structs,
972 unions, and enums at this point. This is a bug in the
973 original design (that has been fixed with the recent
974 addition of the stStruct, stUnion, and stEnum symbol
975 types.) The way you can tell is if/when you see a variable
976 or field of that type. In that case the variable's type
977 (in the AUX table) says if the type is struct, union, or
978 enum, and points back to the stBlock here. So you can
979 patch the tag kind up later - but only if there actually is
980 a variable or field of that type.
982 So until we know for sure, we will guess at this point.
984 If the first member has index==indexNil or a void type,
985 assume we have an enumeration.
986 Otherwise, if there is more than one member, and all
987 the members have offset 0, assume we have a union.
988 Otherwise, assume we have a struct.
990 The heuristic could guess wrong in the case of of an
991 enumeration with no members or a union with one (or zero)
992 members, or when all except the last field of a struct have
993 width zero. These are uncommon and/or illegal situations,
994 and in any case guessing wrong probably doesn't matter
997 But if we later do find out we were wrong, we fixup the tag
998 kind. Members of an enumeration must be handled
999 differently from struct/union fields, and that is harder to
1000 patch up, but luckily we shouldn't need to. (If there are
1001 any enumeration members, we can tell for sure it's an enum
1004 if (type_code
== TYPE_CODE_UNDEF
)
1006 if (nfields
> 1 && max_value
== 0)
1007 type_code
= TYPE_CODE_UNION
;
1009 type_code
= TYPE_CODE_STRUCT
;
1012 /* Create a new type or use the pending type. */
1013 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1014 if (pend
== (struct mdebug_pending
*) NULL
)
1016 t
= new_type (NULL
);
1017 add_pending (cur_fdr
, ext_sh
, t
);
1022 /* Do not set the tag name if it is a compiler generated tag name
1023 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1024 Alpha cc puts out an sh->iss of zero for those. */
1025 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1026 TYPE_TAG_NAME (t
) = NULL
;
1028 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1029 name
, (char *) NULL
);
1031 TYPE_CODE (t
) = type_code
;
1032 TYPE_LENGTH (t
) = sh
->value
;
1033 TYPE_NFIELDS (t
) = nfields
;
1034 TYPE_FIELDS (t
) = f
= ((struct field
*)
1036 nfields
* sizeof (struct field
)));
1038 if (type_code
== TYPE_CODE_ENUM
)
1040 int unsigned_enum
= 1;
1042 /* This is a non-empty enum. */
1044 /* DEC c89 has the number of enumerators in the sh.value field,
1045 not the type length, so we have to compensate for that
1046 incompatibility quirk.
1047 This might do the wrong thing for an enum with one or two
1048 enumerators and gcc -gcoff -fshort-enums, but these cases
1049 are hopefully rare enough.
1050 Alpha cc -migrate has a sh.value field of zero, we adjust
1052 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1053 || TYPE_LENGTH (t
) == 0)
1054 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1055 for (ext_tsym
= ext_sh
+ external_sym_size
;
1057 ext_tsym
+= external_sym_size
)
1060 struct symbol
*enum_sym
;
1062 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1064 if (tsym
.st
!= stMember
)
1067 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1068 FIELD_TYPE (*f
) = t
;
1069 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1070 FIELD_BITSIZE (*f
) = 0;
1072 enum_sym
= allocate_symbol (mdebugread_objfile
);
1073 SYMBOL_SET_LINKAGE_NAME
1075 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1076 f
->name
, strlen (f
->name
)));
1077 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1078 SYMBOL_TYPE (enum_sym
) = t
;
1079 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1080 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1081 if (SYMBOL_VALUE (enum_sym
) < 0)
1083 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1085 /* Skip the stMembers that we've handled. */
1090 TYPE_UNSIGNED (t
) = 1;
1092 /* Make this the current type. */
1093 top_stack
->cur_type
= t
;
1094 top_stack
->cur_field
= 0;
1096 /* Do not create a symbol for alpha cc unnamed structs. */
1100 /* gcc puts out an empty struct for an opaque struct definitions,
1101 do not create a symbol for it either. */
1102 if (TYPE_NFIELDS (t
) == 0)
1108 s
= new_symbol (name
);
1109 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1110 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1111 SYMBOL_VALUE (s
) = 0;
1112 SYMBOL_TYPE (s
) = t
;
1113 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1116 /* End of local variables shared by struct, union, enum, and
1117 block (as yet unknown struct/union/enum) processing. */
1121 found_ecoff_debugging_info
= 1;
1122 /* Beginnning of (code) block. Value of symbol
1123 is the displacement from procedure start. */
1124 push_parse_stack ();
1126 /* Do not start a new block if this is the outermost block of a
1127 procedure. This allows the LOC_BLOCK symbol to point to the
1128 block with the local variables, so funcname::var works. */
1129 if (top_stack
->blocktype
== stProc
1130 || top_stack
->blocktype
== stStaticProc
)
1132 top_stack
->blocktype
= stNil
;
1136 top_stack
->blocktype
= stBlock
;
1137 b
= new_block (NON_FUNCTION_BLOCK
);
1138 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1139 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1140 top_stack
->cur_block
= b
;
1141 add_block (b
, top_stack
->cur_st
);
1144 case stEnd
: /* end (of anything) */
1145 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1147 /* Finished with type */
1148 top_stack
->cur_type
= 0;
1150 else if (sh
->sc
== scText
&&
1151 (top_stack
->blocktype
== stProc
||
1152 top_stack
->blocktype
== stStaticProc
))
1154 /* Finished with procedure */
1155 const struct blockvector
*bv
1156 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1157 struct mdebug_extra_func_info
*e
;
1158 struct block
*b
= top_stack
->cur_block
;
1159 struct type
*ftype
= top_stack
->cur_type
;
1162 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1164 /* Make up special symbol to contain procedure specific info. */
1165 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1166 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1167 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1168 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1169 e
= ((struct mdebug_extra_func_info
*)
1170 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1171 sizeof (struct mdebug_extra_func_info
)));
1172 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1173 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1174 e
->numargs
= top_stack
->numargs
;
1175 e
->pdr
.framereg
= -1;
1176 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1178 /* f77 emits proc-level with address bounds==[0,0],
1179 So look for such child blocks, and patch them. */
1180 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1182 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1184 if (BLOCK_SUPERBLOCK (b_bad
) == b
1185 && BLOCK_START (b_bad
) == top_stack
->procadr
1186 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1188 BLOCK_START (b_bad
) = BLOCK_START (b
);
1189 BLOCK_END (b_bad
) = BLOCK_END (b
);
1193 if (TYPE_NFIELDS (ftype
) <= 0)
1195 /* No parameter type information is recorded with the function's
1196 type. Set that from the type of the parameter symbols. */
1197 int nparams
= top_stack
->numargs
;
1203 struct block_iterator iter
;
1205 TYPE_NFIELDS (ftype
) = nparams
;
1206 TYPE_FIELDS (ftype
) = (struct field
*)
1207 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1210 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1212 if (iparams
== nparams
)
1215 if (SYMBOL_IS_ARGUMENT (sym
))
1217 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1218 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1225 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1227 /* End of (code) block. The value of the symbol is the
1228 displacement from the procedure`s start address of the
1229 end of this block. */
1230 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1232 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1234 /* End of outermost block. Pop parse stack and ignore. The
1235 following stEnd of stProc will take care of the block. */
1238 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1240 /* End of file. Pop parse stack and ignore. Higher
1241 level code deals with this. */
1245 complaint (&symfile_complaints
,
1246 _("stEnd with storage class %d not handled"), sh
->sc
);
1248 pop_parse_stack (); /* Restore previous lexical context. */
1251 case stMember
: /* member of struct or union */
1252 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1253 FIELD_NAME (*f
) = name
;
1254 SET_FIELD_BITPOS (*f
, sh
->value
);
1256 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1257 &bitsize
, bigend
, name
);
1258 FIELD_BITSIZE (*f
) = bitsize
;
1261 case stIndirect
: /* forward declaration on Irix5 */
1262 /* Forward declarations from Irix5 cc are handled by cross_ref,
1266 case stTypedef
: /* type definition */
1267 found_ecoff_debugging_info
= 1;
1269 /* Typedefs for forward declarations and opaque structs from alpha cc
1270 are handled by cross_ref, skip them. */
1274 /* Parse the type or use the pending type. */
1275 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1276 if (pend
== (struct mdebug_pending
*) NULL
)
1278 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1279 add_pending (cur_fdr
, ext_sh
, t
);
1284 /* Mips cc puts out a typedef with the name of the struct for forward
1285 declarations. These should not go into the symbol table and
1286 TYPE_NAME should not be set for them.
1287 They can't be distinguished from an intentional typedef to
1288 the same name however:
1290 struct x { int ix; int jx; };
1294 struct xx {int ixx; int jxx; };
1295 generates a cross referencing stTypedef for x and xx.
1296 The user visible effect of this is that the type of a pointer
1297 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1298 The problem is fixed with alpha cc and Irix5 cc. */
1300 /* However if the typedef cross references to an opaque aggregate, it
1301 is safe to omit it from the symbol table. */
1303 if (has_opaque_xref (cur_fdr
, sh
))
1305 s
= new_symbol (name
);
1306 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1307 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1308 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1309 SYMBOL_TYPE (s
) = t
;
1310 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1312 /* Incomplete definitions of structs should not get a name. */
1313 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1314 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1315 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1316 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1318 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1319 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1321 /* If we are giving a name to a type such as "pointer to
1322 foo" or "function returning foo", we better not set
1323 the TYPE_NAME. If the program contains "typedef char
1324 *caddr_t;", we don't want all variables of type char
1325 * to print as caddr_t. This is not just a
1326 consequence of GDB's type management; CC and GCC (at
1327 least through version 2.4) both output variables of
1328 either type char * or caddr_t with the type
1329 refering to the stTypedef symbol for caddr_t. If a future
1330 compiler cleans this up it GDB is not ready for it
1331 yet, but if it becomes ready we somehow need to
1332 disable this check (without breaking the PCC/GCC2.4
1337 Fortunately, this check seems not to be necessary
1338 for anything except pointers or functions. */
1341 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1345 case stFile
: /* file name */
1346 push_parse_stack ();
1347 top_stack
->blocktype
= sh
->st
;
1350 /* I`ve never seen these for C */
1352 break; /* register relocation */
1354 break; /* forwarding address */
1356 break; /* constant */
1358 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1367 static const struct objfile_data
*basic_type_data
;
1369 static struct type
*
1370 basic_type (int bt
, struct objfile
*objfile
)
1372 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1373 struct type
**map_bt
1374 = (struct type
**) objfile_data (objfile
, basic_type_data
);
1382 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1383 btMax
, struct type
*);
1384 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1393 tp
= objfile_type (objfile
)->builtin_void
;
1397 tp
= init_type (TYPE_CODE_PTR
, 4, TYPE_FLAG_UNSIGNED
,
1399 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1403 tp
= init_type (TYPE_CODE_INT
, 1, 0,
1408 tp
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1409 "unsigned char", objfile
);
1413 tp
= init_type (TYPE_CODE_INT
, 2, 0,
1418 tp
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1419 "unsigned short", objfile
);
1423 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1428 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1429 "unsigned int", objfile
);
1433 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1438 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1439 "unsigned long", objfile
);
1443 tp
= init_type (TYPE_CODE_FLT
,
1444 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1449 tp
= init_type (TYPE_CODE_FLT
,
1450 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1455 tp
= init_type (TYPE_CODE_COMPLEX
,
1456 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1457 "complex", objfile
);
1458 TYPE_TARGET_TYPE (tp
) = basic_type (btFloat
, objfile
);
1462 tp
= init_type (TYPE_CODE_COMPLEX
,
1463 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1464 "double complex", objfile
);
1465 TYPE_TARGET_TYPE (tp
) = basic_type (btDouble
, objfile
);
1469 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1470 good? Would we be better off with TYPE_CODE_ERROR? Should
1471 TYPE_CODE_ERROR print things in hex if it knows the size? */
1472 tp
= init_type (TYPE_CODE_INT
,
1473 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1474 "fixed decimal", objfile
);
1478 tp
= init_type (TYPE_CODE_ERROR
,
1479 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1480 "floating decimal", objfile
);
1484 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1486 tp
= init_type (TYPE_CODE_STRING
, 1, 0,
1491 tp
= objfile_type (objfile
)->builtin_void
;
1495 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1500 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1501 "unsigned long", objfile
);
1505 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1506 "long long", objfile
);
1510 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1511 "unsigned long long", objfile
);
1515 tp
= init_type (TYPE_CODE_PTR
, 8, TYPE_FLAG_UNSIGNED
,
1517 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1521 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1526 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1527 "unsigned int", objfile
);
1539 /* Parse the type information provided in the raw AX entries for
1540 the symbol SH. Return the bitfield size in BS, in case.
1541 We must byte-swap the AX entries before we use them; BIGEND says whether
1542 they are big-endian or little-endian (from fh->fBigendian). */
1544 static struct type
*
1545 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1546 int bigend
, char *sym_name
)
1549 struct type
*tp
= 0;
1550 enum type_code type_code
= TYPE_CODE_UNDEF
;
1552 /* Handle undefined types, they have indexNil. */
1553 if (aux_index
== indexNil
)
1554 return basic_type (btInt
, mdebugread_objfile
);
1556 /* Handle corrupt aux indices. */
1557 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1559 index_complaint (sym_name
);
1560 return basic_type (btInt
, mdebugread_objfile
);
1564 /* Use aux as a type information record, map its basic type. */
1565 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1566 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1569 /* Cannot use builtin types -- build our own. */
1573 type_code
= TYPE_CODE_STRUCT
;
1576 type_code
= TYPE_CODE_UNION
;
1579 type_code
= TYPE_CODE_ENUM
;
1582 type_code
= TYPE_CODE_RANGE
;
1585 type_code
= TYPE_CODE_SET
;
1588 /* alpha cc -migrate uses this for typedefs. The true type will
1589 be obtained by crossreferencing below. */
1590 type_code
= TYPE_CODE_ERROR
;
1593 /* alpha cc uses this for typedefs. The true type will be
1594 obtained by crossreferencing below. */
1595 type_code
= TYPE_CODE_ERROR
;
1598 basic_type_complaint (t
->bt
, sym_name
);
1599 return basic_type (btInt
, mdebugread_objfile
);
1603 /* Move on to next aux. */
1608 int width
= AUX_GET_WIDTH (bigend
, ax
);
1610 /* Inhibit core dumps if TIR is corrupted. */
1611 if (bs
== (int *) NULL
)
1613 /* Alpha cc -migrate encodes char and unsigned char types
1614 as short and unsigned short types with a field width of 8.
1615 Enum types also have a field width which we ignore for now. */
1616 if (t
->bt
== btShort
&& width
== 8)
1617 tp
= basic_type (btChar
, mdebugread_objfile
);
1618 else if (t
->bt
== btUShort
&& width
== 8)
1619 tp
= basic_type (btUChar
, mdebugread_objfile
);
1620 else if (t
->bt
== btEnum
)
1623 complaint (&symfile_complaints
,
1624 _("can't handle TIR fBitfield for %s"),
1632 /* A btIndirect entry cross references to an aux entry containing
1634 if (t
->bt
== btIndirect
)
1641 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1643 if (rn
->rfd
== 0xfff)
1645 rf
= AUX_GET_ISYM (bigend
, ax
);
1653 complaint (&symfile_complaints
,
1654 _("unable to cross ref btIndirect for %s"), sym_name
);
1655 return basic_type (btInt
, mdebugread_objfile
);
1657 xref_fh
= get_rfd (fd
, rf
);
1658 xref_fd
= xref_fh
- debug_info
->fdr
;
1659 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1660 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1663 /* All these types really point to some (common) MIPS type
1664 definition, and only the type-qualifiers fully identify
1665 them. We'll make the same effort at sharing. */
1666 if (t
->bt
== btStruct
||
1670 /* btSet (I think) implies that the name is a tag name, not a typedef
1671 name. This apparently is a MIPS extension for C sets. */
1676 /* Try to cross reference this type, build new type on failure. */
1677 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1678 if (tp
== (struct type
*) NULL
)
1679 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1681 /* DEC c89 produces cross references to qualified aggregate types,
1682 dereference them. */
1683 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1684 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1685 tp
= TYPE_TARGET_TYPE (tp
);
1687 /* Make sure that TYPE_CODE(tp) has an expected type code.
1688 Any type may be returned from cross_ref if file indirect entries
1690 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1691 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1692 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1694 unexpected_type_code_complaint (sym_name
);
1698 /* Usually, TYPE_CODE(tp) is already type_code. The main
1699 exception is if we guessed wrong re struct/union/enum.
1700 But for struct vs. union a wrong guess is harmless, so
1701 don't complain(). */
1702 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1703 && type_code
!= TYPE_CODE_ENUM
)
1704 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1705 && type_code
== TYPE_CODE_ENUM
))
1707 bad_tag_guess_complaint (sym_name
);
1710 if (TYPE_CODE (tp
) != type_code
)
1712 TYPE_CODE (tp
) = type_code
;
1715 /* Do not set the tag name if it is a compiler generated tag name
1716 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1717 if (name
[0] == '.' || name
[0] == '\0')
1718 TYPE_TAG_NAME (tp
) = NULL
;
1719 else if (TYPE_TAG_NAME (tp
) == NULL
1720 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1723 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1724 name
, strlen (name
)));
1728 /* All these types really point to some (common) MIPS type
1729 definition, and only the type-qualifiers fully identify
1730 them. We'll make the same effort at sharing.
1731 FIXME: We are not doing any guessing on range types. */
1732 if (t
->bt
== btRange
)
1736 /* Try to cross reference this type, build new type on failure. */
1737 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1738 if (tp
== (struct type
*) NULL
)
1739 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1741 /* Make sure that TYPE_CODE(tp) has an expected type code.
1742 Any type may be returned from cross_ref if file indirect entries
1744 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1746 unexpected_type_code_complaint (sym_name
);
1750 /* Usually, TYPE_CODE(tp) is already type_code. The main
1751 exception is if we guessed wrong re struct/union/enum. */
1752 if (TYPE_CODE (tp
) != type_code
)
1754 bad_tag_guess_complaint (sym_name
);
1755 TYPE_CODE (tp
) = type_code
;
1757 if (TYPE_NAME (tp
) == NULL
1758 || strcmp (TYPE_NAME (tp
), name
) != 0)
1761 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1762 name
, strlen (name
)));
1765 if (t
->bt
== btTypedef
)
1769 /* Try to cross reference this type, it should succeed. */
1770 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1771 if (tp
== (struct type
*) NULL
)
1773 complaint (&symfile_complaints
,
1774 _("unable to cross ref btTypedef for %s"), sym_name
);
1775 tp
= basic_type (btInt
, mdebugread_objfile
);
1779 /* Deal with range types. */
1780 if (t
->bt
== btRange
)
1782 TYPE_NFIELDS (tp
) = 0;
1783 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1784 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1785 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1787 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1791 /* Parse all the type qualifiers now. If there are more
1792 than 6 the game will continue in the next aux. */
1796 #define PARSE_TQ(tq) \
1797 if (t->tq != tqNil) \
1798 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1810 /* mips cc 2.x and gcc never put out continued aux entries. */
1814 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1818 /* Complain for illegal continuations due to corrupt aux entries. */
1820 complaint (&symfile_complaints
,
1821 _("illegal TIR continued for %s"), sym_name
);
1826 /* Make up a complex type from a basic one. Type is passed by
1827 reference in TPP and side-effected as necessary. The type
1828 qualifier TQ says how to handle the aux symbols at AX for
1829 the symbol SX we are currently analyzing. BIGEND says whether
1830 aux symbols are big-endian or little-endian.
1831 Returns the number of aux symbols we parsed. */
1834 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1840 /* Used in array processing. */
1851 t
= lookup_pointer_type (*tpp
);
1856 t
= lookup_function_type (*tpp
);
1863 /* Determine and record the domain type (type of index). */
1864 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1870 rf
= AUX_GET_ISYM (bigend
, ax
);
1873 fh
= get_rfd (fd
, rf
);
1875 indx
= parse_type (fh
- debug_info
->fdr
,
1876 debug_info
->external_aux
+ fh
->iauxBase
,
1877 id
, (int *) NULL
, bigend
, sym_name
);
1879 /* The bounds type should be an integer type, but might be anything
1880 else due to corrupt aux entries. */
1881 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1883 complaint (&symfile_complaints
,
1884 _("illegal array index type for %s, assuming int"),
1886 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1889 /* Get the bounds, and create the array type. */
1891 lower
= AUX_GET_DNLOW (bigend
, ax
);
1893 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1895 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1897 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1900 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1902 /* We used to fill in the supplied array element bitsize
1903 here if the TYPE_LENGTH of the target type was zero.
1904 This happens for a `pointer to an array of anonymous structs',
1905 but in this case the array element bitsize is also zero,
1906 so nothing is gained.
1907 And we used to check the TYPE_LENGTH of the target type against
1908 the supplied array element bitsize.
1909 gcc causes a mismatch for `pointer to array of object',
1910 since the sdb directives it uses do not have a way of
1911 specifying the bitsize, but it does no harm (the
1912 TYPE_LENGTH should be correct) and we should be able to
1913 ignore the erroneous bitsize from the auxiliary entry safely.
1914 dbx seems to ignore it too. */
1916 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1917 if (TYPE_LENGTH (*tpp
) == 0)
1918 TYPE_TARGET_STUB (t
) = 1;
1924 /* Volatile -- currently ignored */
1928 /* Const -- currently ignored */
1932 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1938 /* Parse a procedure descriptor record PR. Note that the procedure is
1939 parsed _after_ the local symbols, now we just insert the extra
1940 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1941 already been placed in the procedure's main block. Note also that
1942 images that have been partially stripped (ld -x) have been deprived
1943 of local symbols, and we have to cope with them here. FIRST_OFF is
1944 the offset of the first procedure for this FDR; we adjust the
1945 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1946 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1947 in question, or NULL to use top_stack->cur_block. */
1950 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1951 struct partial_symtab
*pst
)
1953 struct symbol
*s
, *i
;
1954 const struct block
*b
;
1957 /* Simple rule to find files linked "-x". */
1958 if (cur_fdr
->rss
== -1)
1962 /* Static procedure at address pr->adr. Sigh. */
1963 /* FIXME-32x64. assuming pr->adr fits in long. */
1964 complaint (&symfile_complaints
,
1965 _("can't handle PDR for static proc at 0x%lx"),
1966 (unsigned long) pr
->adr
);
1974 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1975 ((char *) debug_info
->external_ext
1977 * debug_swap
->external_ext_size
)),
1979 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1987 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1988 ((char *) debug_info
->external_sym
1989 + ((cur_fdr
->isymBase
+ pr
->isym
)
1990 * debug_swap
->external_sym_size
)),
1992 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1995 if (search_symtab
!= NULL
)
1998 /* This loses both in the case mentioned (want a static, find a global),
1999 but also if we are looking up a non-mangled name which happens to
2000 match the name of a mangled function. */
2001 /* We have to save the cur_fdr across the call to lookup_symbol.
2002 If the pdr is for a static function and if a global function with
2003 the same name exists, lookup_symbol will eventually read in the symtab
2004 for the global function and clobber cur_fdr. */
2005 FDR
*save_cur_fdr
= cur_fdr
;
2007 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
2008 cur_fdr
= save_cur_fdr
;
2012 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
2019 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
2020 VAR_DOMAIN
, LOC_BLOCK
);
2024 b
= SYMBOL_BLOCK_VALUE (s
);
2028 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2032 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2033 s
= new_symbol (sh_name
);
2034 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2035 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2036 /* Donno its type, hope int is ok. */
2038 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2039 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2040 /* Won't have symbols for this one. */
2042 SYMBOL_BLOCK_VALUE (s
) = b
;
2043 BLOCK_FUNCTION (b
) = s
;
2044 BLOCK_START (b
) = pr
->adr
;
2045 /* BOUND used to be the end of procedure's text, but the
2046 argument is no longer passed in. */
2047 BLOCK_END (b
) = bound
;
2048 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2049 add_block (b
, top_stack
->cur_st
);
2053 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2057 struct mdebug_extra_func_info
*e
;
2059 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2062 /* GDB expects the absolute function start address for the
2063 procedure descriptor in e->pdr.adr.
2064 As the address in the procedure descriptor is usually relative,
2065 we would have to relocate e->pdr.adr with cur_fdr->adr and
2066 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2067 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2068 in shared libraries on some systems, and on other systems
2069 e->pdr.adr is sometimes offset by a bogus value.
2070 To work around these problems, we replace e->pdr.adr with
2071 the start address of the function. */
2072 e
->pdr
.adr
= BLOCK_START (b
);
2075 /* It would be reasonable that functions that have been compiled
2076 without debugging info have a btNil type for their return value,
2077 and functions that are void and are compiled with debugging info
2079 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2080 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2082 The glevel field in cur_fdr could be used to determine the presence
2083 of debugging info, but GCC doesn't always pass the -g switch settings
2084 to the assembler and GAS doesn't set the glevel field from the -g switch
2086 To work around these problems, the return value type of a TYPE_CODE_VOID
2087 function is adjusted accordingly if no debugging info was found in the
2088 compilation unit. */
2090 if (processing_gcc_compilation
== 0
2091 && found_ecoff_debugging_info
== 0
2092 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2093 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2096 /* Parse the external symbol ES. Just call parse_symbol() after
2097 making sure we know where the aux are for it.
2098 BIGEND says whether aux entries are big-endian or little-endian.
2100 This routine clobbers top_stack->cur_block and ->cur_st. */
2102 static void parse_external (EXTR
*, int, struct section_offsets
*,
2106 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2107 struct objfile
*objfile
)
2111 if (es
->ifd
!= ifdNil
)
2114 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2115 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2119 cur_fdr
= debug_info
->fdr
;
2123 /* Reading .o files */
2124 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2127 switch (es
->asym
.st
)
2130 /* These are generated for static symbols in .o files,
2151 /* FIXME: Turn this into a complaint? */
2153 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2154 what
, debug_info
->ssext
+ es
->asym
.iss
,
2155 fdr_name (cur_fdr
));
2159 switch (es
->asym
.st
)
2163 /* There is no need to parse the external procedure symbols.
2164 If they are from objects compiled without -g, their index will
2165 be indexNil, and the symbol definition from the minimal symbol
2166 is preferrable (yielding a function returning int instead of int).
2167 If the index points to a local procedure symbol, the local
2168 symbol already provides the correct type.
2169 Note that the index of the external procedure symbol points
2170 to the local procedure symbol in the local symbol table, and
2171 _not_ to the auxiliary symbol info. */
2175 /* Global common symbols are resolved by the runtime loader,
2177 if (SC_IS_COMMON (es
->asym
.sc
))
2180 /* Note that the case of a symbol with indexNil must be handled
2181 anyways by parse_symbol(). */
2182 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2183 bigend
, section_offsets
, objfile
);
2190 /* Parse the line number info for file descriptor FH into
2191 GDB's linetable LT. MIPS' encoding requires a little bit
2192 of magic to get things out. Note also that MIPS' line
2193 numbers can go back and forth, apparently we can live
2194 with that and do not need to reorder our linetables. */
2196 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2197 struct partial_symtab
*, CORE_ADDR
);
2200 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2201 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2203 unsigned char *base
;
2205 int delta
, count
, lineno
= 0;
2207 if (fh
->cbLine
== 0)
2210 /* Scan by procedure descriptors. */
2212 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2216 unsigned char *halt
;
2218 /* No code for this one. */
2219 if (pr
->iline
== ilineNil
||
2220 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2223 /* Determine start and end address of compressed line bytes for
2225 base
= debug_info
->line
+ fh
->cbLineOffset
;
2226 if (j
!= (fh
->cpd
- 1))
2227 halt
= base
+ pr
[1].cbLineOffset
;
2229 halt
= base
+ fh
->cbLine
;
2230 base
+= pr
->cbLineOffset
;
2232 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2234 l
= adr
>> 2; /* in words */
2235 for (lineno
= pr
->lnLow
; base
< halt
;)
2237 count
= *base
& 0x0f;
2238 delta
= *base
++ >> 4;
2243 delta
= (base
[0] << 8) | base
[1];
2244 if (delta
>= 0x8000)
2248 lineno
+= delta
; /* first delta is 0 */
2250 /* Complain if the line table overflows. Could happen
2251 with corrupt binaries. */
2252 if (lt
->nitems
>= maxlines
)
2254 complaint (&symfile_complaints
,
2255 _("guessed size of linetable for %s incorrectly"),
2259 k
= add_line (lt
, lineno
, l
, k
);
2266 function_outside_compilation_unit_complaint (const char *arg1
)
2268 complaint (&symfile_complaints
,
2269 _("function `%s' appears to be defined "
2270 "outside of all compilation units"),
2274 /* Use the STORAGE_CLASS to compute which section the given symbol
2275 belongs to, and then records this new minimal symbol. */
2278 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2279 enum minimal_symbol_type ms_type
, int storage_class
,
2280 struct objfile
*objfile
)
2284 switch (storage_class
)
2287 section
= SECT_OFF_TEXT (objfile
);
2290 section
= SECT_OFF_DATA (objfile
);
2293 section
= SECT_OFF_BSS (objfile
);
2296 section
= get_section_index (objfile
, ".sdata");
2299 section
= get_section_index (objfile
, ".sbss");
2302 section
= get_section_index (objfile
, ".rdata");
2305 section
= get_section_index (objfile
, ".init");
2308 section
= get_section_index (objfile
, ".xdata");
2311 section
= get_section_index (objfile
, ".pdata");
2314 section
= get_section_index (objfile
, ".fini");
2317 section
= get_section_index (objfile
, ".rconst");
2321 section
= get_section_index (objfile
, ".tlsdata");
2326 section
= get_section_index (objfile
, ".tlsbss");
2330 /* This kind of symbol is not associated to a section. */
2334 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2338 /* Master parsing procedure for first-pass reading of file symbols
2339 into a partial_symtab. */
2342 parse_partial_symbols (struct objfile
*objfile
)
2344 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2345 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2346 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2347 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2348 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2349 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2350 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2352 HDRR
*hdr
= &debug_info
->symbolic_header
;
2353 /* Running pointers */
2361 struct partial_symtab
*pst
;
2362 int textlow_not_set
= 1;
2363 int past_first_source_file
= 0;
2365 /* List of current psymtab's include files. */
2366 const char **psymtab_include_list
;
2367 int includes_allocated
;
2370 struct pst_map
*fdr_to_pst
;
2371 /* Index within current psymtab dependency list. */
2372 struct partial_symtab
**dependency_list
;
2373 int dependencies_used
, dependencies_allocated
;
2374 struct cleanup
*old_chain
;
2376 enum language prev_language
;
2377 asection
*text_sect
;
2378 int relocatable
= 0;
2380 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2381 the shared libraries are prelinked at a high memory address.
2382 We have to adjust the start address of the object file for this case,
2383 by setting it to the start address of the first procedure in the file.
2384 But we should do no adjustments if we are debugging a .o file, where
2385 the text section (and fh->adr) really starts at zero. */
2386 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2387 if (text_sect
!= NULL
2388 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2391 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2392 sizeof (EXTR
) * hdr
->iextMax
);
2394 includes_allocated
= 30;
2396 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2397 sizeof (const char *));
2398 next_symbol_text_func
= mdebug_next_symbol_text
;
2400 dependencies_allocated
= 30;
2401 dependencies_used
= 0;
2403 (struct partial_symtab
**) alloca (dependencies_allocated
*
2404 sizeof (struct partial_symtab
*));
2406 set_last_source_file (NULL
);
2411 * Only parse the Local and External symbols, and the Relative FDR.
2412 * Fixup enough of the loader symtab to be able to use it.
2413 * Allocate space only for the file's portions we need to
2418 max_glevel
= MIN_GLEVEL
;
2420 /* Allocate the map FDR -> PST.
2421 Minor hack: -O3 images might claim some global data belongs
2422 to FDR -1. We`ll go along with that. */
2423 fdr_to_pst
= XCNEWVEC (struct pst_map
, hdr
->ifdMax
+ 1);
2424 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2427 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2429 fdr_to_pst
[-1].pst
= pst
;
2433 /* Allocate the global pending list. */
2435 ((struct mdebug_pending
**)
2436 obstack_alloc (&objfile
->objfile_obstack
,
2437 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2438 memset (pending_list
, 0,
2439 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2441 /* Pass 0 over external syms: swap them in. */
2442 ext_block
= XNEWVEC (EXTR
, hdr
->iextMax
);
2443 make_cleanup (xfree
, ext_block
);
2445 ext_out
= (char *) debug_info
->external_ext
;
2446 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2448 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2449 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2451 /* Pass 1 over external syms: Presize and partition the list. */
2453 ext_in_end
= ext_in
+ hdr
->iextMax
;
2454 for (; ext_in
< ext_in_end
; ext_in
++)
2456 /* See calls to complain below. */
2457 if (ext_in
->ifd
>= -1
2458 && ext_in
->ifd
< hdr
->ifdMax
2459 && ext_in
->asym
.iss
>= 0
2460 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2461 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2464 /* Pass 1.5 over files: partition out global symbol space. */
2466 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2468 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2469 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2470 fdr_to_pst
[f_idx
].n_globals
= 0;
2475 For ECOFF in ELF, we skip the creation of the minimal symbols.
2476 The ECOFF symbols should be a subset of the Elf symbols, and the
2477 section information of the elf symbols will be more accurate.
2478 FIXME! What about Irix 5's native linker?
2480 By default, Elf sections which don't exist in ECOFF
2481 get put in ECOFF's absolute section by the gnu linker.
2482 Since absolute sections don't get relocated, we
2483 end up calculating an address different from that of
2484 the symbol's minimal symbol (created earlier from the
2487 To fix this, either :
2488 1) don't create the duplicate symbol
2489 (assumes ECOFF symtab is a subset of the ELF symtab;
2490 assumes no side-effects result from ignoring ECOFF symbol)
2491 2) create it, only if lookup for existing symbol in ELF's minimal
2494 assumes no side-effects result from ignoring ECOFF symbol)
2495 3) create it, but lookup ELF's minimal symbol and use it's section
2496 during relocation, then modify "uniqify" phase to merge and
2497 eliminate the duplicate symbol
2498 (highly inefficient)
2500 I've implemented #1 here...
2501 Skip the creation of the minimal symbols based on the ECOFF
2504 /* Pass 2 over external syms: fill in external symbols. */
2506 ext_in_end
= ext_in
+ hdr
->iextMax
;
2507 for (; ext_in
< ext_in_end
; ext_in
++)
2509 enum minimal_symbol_type ms_type
= mst_text
;
2510 CORE_ADDR svalue
= ext_in
->asym
.value
;
2512 /* The Irix 5 native tools seem to sometimes generate bogus
2513 external symbols. */
2514 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2516 complaint (&symfile_complaints
,
2517 _("bad ifd for external symbol: %d (max %ld)"),
2518 ext_in
->ifd
, hdr
->ifdMax
);
2521 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2523 complaint (&symfile_complaints
,
2524 _("bad iss for external symbol: %ld (max %ld)"),
2525 ext_in
->asym
.iss
, hdr
->issExtMax
);
2529 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2530 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2533 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2537 /* Pass 3 over files, over local syms: fill in static symbols. */
2538 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2540 /* Process ECOFF Symbol Types and Storage Classes. */
2541 switch (ext_in
->asym
.st
)
2544 /* Beginnning of Procedure */
2547 /* Load time only static procs */
2548 ms_type
= mst_file_text
;
2551 /* External symbol */
2552 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2554 /* The value of a common symbol is its size, not its address.
2558 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2562 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2566 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2576 /* On certain platforms, some extra label symbols can be
2577 generated by the linker. One possible usage for this kind
2578 of symbols is to represent the address of the begining of a
2579 given section. For instance, on Tru64 5.1, the address of
2580 the _ftext label is the start address of the .text section.
2582 The storage class of these symbols is usually directly
2583 related to the section to which the symbol refers. For
2584 instance, on Tru64 5.1, the storage class for the _fdata
2585 label is scData, refering to the .data section.
2587 It is actually possible that the section associated to the
2588 storage class of the label does not exist. On True64 5.1
2589 for instance, the libm.so shared library does not contain
2590 any .data section, although it contains a _fpdata label
2591 which storage class is scData... Since these symbols are
2592 usually useless for the debugger user anyway, we just
2593 discard these symbols. */
2595 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2597 if (objfile
->sect_index_text
== -1)
2600 ms_type
= mst_file_text
;
2602 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2604 if (objfile
->sect_index_data
== -1)
2607 ms_type
= mst_file_data
;
2609 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2611 if (objfile
->sect_index_bss
== -1)
2614 ms_type
= mst_file_bss
;
2616 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2618 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2620 if (sbss_sect_index
== -1)
2623 ms_type
= mst_file_bss
;
2630 /* The alpha has the section start addresses in stLocal symbols
2631 whose name starts with a `.'. Skip those but complain for all
2632 other stLocal symbols.
2633 Irix6 puts the section start addresses in stNil symbols, skip
2639 ms_type
= mst_unknown
;
2640 unknown_ext_complaint (name
);
2642 if (!ECOFF_IN_ELF (cur_bfd
))
2643 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2647 /* Pass 3 over files, over local syms: fill in static symbols. */
2648 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2650 struct partial_symtab
*save_pst
;
2654 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2658 fdr_to_pst
[f_idx
].pst
= NULL
;
2662 /* Determine the start address for this object file from the
2663 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2667 if (relocatable
|| textlow
!= 0)
2668 textlow
+= ANOFFSET (objfile
->section_offsets
,
2669 SECT_OFF_TEXT (objfile
));
2673 pst
= start_psymtab_common (objfile
,
2676 objfile
->global_psymbols
.next
,
2677 objfile
->static_psymbols
.next
);
2678 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2679 sizeof (struct symloc
));
2680 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2683 FDR_IDX (pst
) = f_idx
;
2684 CUR_BFD (pst
) = cur_bfd
;
2685 DEBUG_SWAP (pst
) = debug_swap
;
2686 DEBUG_INFO (pst
) = debug_info
;
2687 PENDING_LIST (pst
) = pending_list
;
2689 /* The way to turn this into a symtab is to call... */
2690 pst
->read_symtab
= mdebug_read_symtab
;
2692 /* Set up language for the pst.
2693 The language from the FDR is used if it is unambigious (e.g. cfront
2694 with native cc and g++ will set the language to C).
2695 Otherwise we have to deduce the language from the filename.
2696 Native ecoff has every header file in a separate FDR, so
2697 deduce_language_from_filename will return language_unknown for
2698 a header file, which is not what we want.
2699 But the FDRs for the header files are after the FDR for the source
2700 file, so we can assign the language of the source file to the
2701 following header files. Then we save the language in the private
2702 pst data so that we can reuse it when building symtabs. */
2703 prev_language
= psymtab_language
;
2707 case langCplusplusV2
:
2708 psymtab_language
= language_cplus
;
2711 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2714 if (psymtab_language
== language_unknown
)
2715 psymtab_language
= prev_language
;
2716 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2718 pst
->texthigh
= pst
->textlow
;
2720 /* For stabs-in-ecoff files, the second symbol must be @stab.
2721 This symbol is emitted by mips-tfile to signal that the
2722 current object file uses encapsulated stabs instead of mips
2723 ecoff for local symbols. (It is the second symbol because
2724 the first symbol is the stFile used to signal the start of a
2726 processing_gcc_compilation
= 0;
2729 (*swap_sym_in
) (cur_bfd
,
2730 ((char *) debug_info
->external_sym
2731 + (fh
->isymBase
+ 1) * external_sym_size
),
2733 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2735 processing_gcc_compilation
= 2;
2738 if (processing_gcc_compilation
!= 0)
2740 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2743 const char *namestring
;
2745 (*swap_sym_in
) (cur_bfd
,
2746 (((char *) debug_info
->external_sym
)
2747 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2749 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2750 if (!ECOFF_IS_STAB (&sh
))
2752 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2757 if (sh
.st
== stStaticProc
)
2759 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2760 record_minimal_symbol (namestring
, sh
.value
,
2761 mst_file_text
, sh
.sc
,
2764 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2765 SECT_OFF_TEXT (objfile
));
2766 procaddr
= sh
.value
;
2768 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2769 (debug_info
->external_aux
2772 (*swap_sym_in
) (cur_bfd
,
2773 ((char *) debug_info
->external_sym
2774 + ((fh
->isymBase
+ isym
- 1)
2775 * external_sym_size
)),
2779 CORE_ADDR high
= procaddr
+ sh
.value
;
2781 /* Kludge for Irix 5.2 zero fh->adr. */
2783 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2784 pst
->textlow
= procaddr
;
2785 if (high
> pst
->texthigh
)
2786 pst
->texthigh
= high
;
2789 else if (sh
.st
== stStatic
)
2804 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2805 record_minimal_symbol (namestring
, sh
.value
,
2806 mst_file_data
, sh
.sc
,
2808 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2809 SECT_OFF_DATA (objfile
));
2813 /* FIXME! Shouldn't this use cases for bss,
2814 then have the default be abs? */
2815 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2816 record_minimal_symbol (namestring
, sh
.value
,
2817 mst_file_bss
, sh
.sc
,
2819 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2820 SECT_OFF_BSS (objfile
));
2826 /* Handle stabs continuation. */
2828 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2829 int len
= strlen (stabstring
);
2831 while (stabstring
[len
- 1] == '\\')
2834 char *stabstring1
= stabstring
;
2838 /* Ignore continuation char from 1st string. */
2841 /* Read next stabstring. */
2843 (*swap_sym_in
) (cur_bfd
,
2844 (((char *) debug_info
->external_sym
)
2845 + (fh
->isymBase
+ cur_sdx
)
2846 * external_sym_size
),
2848 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2849 len2
= strlen (stabstring2
);
2851 /* Concatinate stabstring2 with stabstring1. */
2853 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2855 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2858 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2859 strcpy (stabstring
, stabstring1
);
2861 strcpy (stabstring
+ len
, stabstring2
);
2869 /* Standard, external, non-debugger, symbols. */
2871 case N_TEXT
| N_EXT
:
2872 case N_NBTEXT
| N_EXT
:
2873 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2874 SECT_OFF_TEXT (objfile
));
2877 case N_DATA
| N_EXT
:
2878 case N_NBDATA
| N_EXT
:
2879 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2880 SECT_OFF_DATA (objfile
));
2885 case N_NBBSS
| N_EXT
:
2886 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2887 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2888 SECT_OFF_BSS (objfile
));
2895 /* Standard, local, non-debugger, symbols. */
2899 /* We need to be able to deal with both N_FN or
2900 N_TEXT, because we have no way of knowing
2901 whether the sys-supplied ld or GNU ld was used
2902 to make the executable. Sequents throw in
2903 another wrinkle -- they renumbered N_FN. */
2911 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2912 SECT_OFF_DATA (objfile
));
2915 case N_UNDF
| N_EXT
:
2916 continue; /* Just undefined, not COMMON. */
2921 /* Lots of symbol types we can just ignore. */
2928 /* Keep going . . . */
2931 * Special symbol types for GNU
2934 case N_INDR
| N_EXT
:
2936 case N_SETA
| N_EXT
:
2938 case N_SETT
| N_EXT
:
2940 case N_SETD
| N_EXT
:
2942 case N_SETB
| N_EXT
:
2953 static int prev_so_symnum
= -10;
2954 static int first_so_symnum
;
2956 int prev_textlow_not_set
;
2958 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
,
2959 SECT_OFF_TEXT (objfile
));
2961 prev_textlow_not_set
= textlow_not_set
;
2963 /* A zero value is probably an indication for the
2964 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2965 for zero, so don't relocate it. */
2968 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2970 textlow_not_set
= 1;
2974 textlow_not_set
= 0;
2976 past_first_source_file
= 1;
2978 if (prev_so_symnum
!= symnum
- 1)
2979 { /* Here if prev stab wasn't N_SO. */
2980 first_so_symnum
= symnum
;
2984 pst
= (struct partial_symtab
*) 0;
2986 dependencies_used
= 0;
2990 prev_so_symnum
= symnum
;
2992 /* End the current partial symtab and start a
2995 /* SET_NAMESTRING ();*/
2996 namestring
= stabstring
;
2998 /* Null name means end of .o file. Don't start a new
3000 if (*namestring
== '\000')
3003 /* Some compilers (including gcc) emit a pair of
3004 initial N_SOs. The first one is a directory name;
3005 the second the file name. If pst exists, is
3006 empty, and has a filename ending in '/', we assume
3007 the previous N_SO was a directory name. */
3008 p
= lbasename (namestring
);
3009 if (p
!= namestring
&& *p
== '\000')
3010 continue; /* Simply ignore directory
3013 /* Some other compilers (C++ ones in particular) emit
3014 useless SOs for non-existant .c files. We ignore
3015 all subsequent SOs that immediately follow the
3028 enum language tmp_language
;
3030 /* Mark down an include file in the current psymtab. */
3032 /* SET_NAMESTRING (); */
3033 namestring
= stabstring
;
3036 = deduce_language_from_filename (namestring
);
3038 /* Only change the psymtab's language if we've
3039 learned something useful (eg. tmp_language is not
3040 language_unknown). In addition, to match what
3041 start_subfile does, never change from C++ to
3043 if (tmp_language
!= language_unknown
3044 && (tmp_language
!= language_c
3045 || psymtab_language
!= language_cplus
))
3046 psymtab_language
= tmp_language
;
3048 /* In C++, one may expect the same filename to come
3049 round many times, when code is coming alternately
3050 from the main file and from inline functions in
3051 other files. So I check to see if this is a file
3052 we've seen before -- either the main source file,
3053 or a previously included file.
3055 This seems to be a lot of time to be spending on
3056 N_SOL, but things like "break c-exp.y:435" need to
3057 work (I suppose the psymtab_include_list could be
3058 hashed or put in a binary tree, if profiling shows
3059 this is a major hog). */
3060 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3066 for (i
= 0; i
< includes_used
; i
++)
3067 if (filename_cmp (namestring
,
3068 psymtab_include_list
[i
]) == 0)
3077 psymtab_include_list
[includes_used
++] = namestring
;
3078 if (includes_used
>= includes_allocated
)
3080 const char **orig
= psymtab_include_list
;
3082 psymtab_include_list
= (const char **)
3083 alloca ((includes_allocated
*= 2) *
3084 sizeof (const char *));
3085 memcpy (psymtab_include_list
, orig
,
3086 includes_used
* sizeof (const char *));
3090 case N_LSYM
: /* Typedef or automatic variable. */
3091 case N_STSYM
: /* Data seg var -- static */
3092 case N_LCSYM
: /* BSS " */
3093 case N_ROSYM
: /* Read-only data seg var -- static. */
3094 case N_NBSTS
: /* Gould nobase. */
3095 case N_NBLCS
: /* symbols. */
3097 case N_GSYM
: /* Global (extern) variable; can be
3098 data or bss (sigh FIXME). */
3100 /* Following may probably be ignored; I'll leave them here
3101 for now (until I do Pascal and Modula 2 extensions). */
3103 case N_PC
: /* I may or may not need this; I
3105 case N_M2C
: /* I suspect that I can ignore this
3107 case N_SCOPE
: /* Same. */
3109 /* SET_NAMESTRING (); */
3110 namestring
= stabstring
;
3111 p
= (char *) strchr (namestring
, ':');
3113 continue; /* Not a debugging symbol. */
3117 /* Main processing section for debugging symbols which
3118 the initial read through the symbol tables needs to
3119 worry about. If we reach this point, the symbol
3120 which we are considering is definitely one we are
3121 interested in. p must also contain the (valid)
3122 index into the namestring which indicates the
3123 debugging type symbol. */
3128 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3129 SECT_OFF_DATA (objfile
));
3131 if (gdbarch_static_transform_name_p (gdbarch
))
3132 namestring
= gdbarch_static_transform_name
3133 (gdbarch
, namestring
);
3135 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3136 VAR_DOMAIN
, LOC_STATIC
,
3137 &objfile
->static_psymbols
,
3139 psymtab_language
, objfile
);
3142 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3143 SECT_OFF_DATA (objfile
));
3144 /* The addresses in these entries are reported
3145 to be wrong. See the code that reads 'G's
3147 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3148 VAR_DOMAIN
, LOC_STATIC
,
3149 &objfile
->global_psymbols
,
3151 psymtab_language
, objfile
);
3155 /* When a 'T' entry is defining an anonymous enum, it
3156 may have a name which is the empty string, or a
3157 single space. Since they're not really defining a
3158 symbol, those shouldn't go in the partial symbol
3159 table. We do pick up the elements of such enums at
3160 'check_enum:', below. */
3161 if (p
>= namestring
+ 2
3162 || (p
== namestring
+ 1
3163 && namestring
[0] != ' '))
3165 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3166 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3167 &objfile
->static_psymbols
,
3168 0, psymtab_language
, objfile
);
3171 /* Also a typedef with the same name. */
3172 add_psymbol_to_list (namestring
,
3174 VAR_DOMAIN
, LOC_TYPEDEF
,
3175 &objfile
->static_psymbols
,
3176 0, psymtab_language
,
3183 if (p
!= namestring
) /* a name is there, not
3186 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3187 VAR_DOMAIN
, LOC_TYPEDEF
,
3188 &objfile
->static_psymbols
,
3189 0, psymtab_language
, objfile
);
3192 /* If this is an enumerated type, we need to add
3193 all the enum constants to the partial symbol
3194 table. This does not cover enums without names,
3195 e.g. "enum {a, b} c;" in C, but fortunately
3196 those are rare. There is no way for GDB to find
3197 those from the enum type without spending too
3198 much time on it. Thus to solve this problem,
3199 the compiler needs to put out the enum in a
3200 nameless type. GCC2 does this. */
3202 /* We are looking for something of the form
3203 <name> ":" ("t" | "T") [<number> "="] "e"
3204 {<constant> ":" <value> ","} ";". */
3206 /* Skip over the colon and the 't' or 'T'. */
3208 /* This type may be given a number. Also, numbers
3209 can come in pairs like (0,26). Skip over it. */
3210 while ((*p
>= '0' && *p
<= '9')
3211 || *p
== '(' || *p
== ',' || *p
== ')'
3217 /* The aix4 compiler emits extra crud before
3221 /* Skip over the type (?). */
3225 /* Skip over the colon. */
3229 /* We have found an enumerated type. */
3230 /* According to comments in read_enum_type
3231 a comma could end it instead of a semicolon.
3232 I don't know where that happens.
3234 while (*p
&& *p
!= ';' && *p
!= ',')
3238 /* Check for and handle cretinous dbx
3239 symbol name continuation! */
3240 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3241 p
= next_symbol_text (objfile
);
3243 /* Point to the character after the name
3244 of the enum constant. */
3245 for (q
= p
; *q
&& *q
!= ':'; q
++)
3247 /* Note that the value doesn't matter for
3248 enum constants in psymtabs, just in
3250 add_psymbol_to_list (p
, q
- p
, 1,
3251 VAR_DOMAIN
, LOC_CONST
,
3252 &objfile
->static_psymbols
,
3253 0, psymtab_language
,
3255 /* Point past the name. */
3257 /* Skip over the value. */
3258 while (*p
&& *p
!= ',')
3260 /* Advance past the comma. */
3267 /* Constant, e.g. from "const" in Pascal. */
3268 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3269 VAR_DOMAIN
, LOC_CONST
,
3270 &objfile
->static_psymbols
,
3271 0, psymtab_language
, objfile
);
3277 int name_len
= p
- namestring
;
3278 char *name
= (char *) xmalloc (name_len
+ 1);
3280 memcpy (name
, namestring
, name_len
);
3281 name
[name_len
] = '\0';
3282 function_outside_compilation_unit_complaint (name
);
3285 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3286 SECT_OFF_TEXT (objfile
));
3287 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3288 VAR_DOMAIN
, LOC_BLOCK
,
3289 &objfile
->static_psymbols
,
3291 psymtab_language
, objfile
);
3294 /* Global functions were ignored here, but now they
3295 are put into the global psymtab like one would
3296 expect. They're also in the minimal symbol
3301 int name_len
= p
- namestring
;
3302 char *name
= (char *) xmalloc (name_len
+ 1);
3304 memcpy (name
, namestring
, name_len
);
3305 name
[name_len
] = '\0';
3306 function_outside_compilation_unit_complaint (name
);
3309 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3310 SECT_OFF_TEXT (objfile
));
3311 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3312 VAR_DOMAIN
, LOC_BLOCK
,
3313 &objfile
->global_psymbols
,
3315 psymtab_language
, objfile
);
3318 /* Two things show up here (hopefully); static
3319 symbols of local scope (static used inside
3320 braces) or extensions of structure symbols. We
3335 case '#': /* For symbol identification (used
3340 /* It is a C++ nested symbol. We don't need to
3341 record it (I don't think); if we try to look up
3342 foo::bar::baz, then symbols for the symtab
3343 containing foo should get read in, I think. */
3344 /* Someone says sun cc puts out symbols like
3345 /foo/baz/maclib::/usr/local/bin/maclib,
3346 which would get here with a symbol type of ':'. */
3350 /* Unexpected symbol descriptor. The second and
3351 subsequent stabs of a continued stab can show up
3352 here. The question is whether they ever can
3353 mimic a normal stab--it would be nice if not,
3354 since we certainly don't want to spend the time
3355 searching to the end of every string looking for
3358 complaint (&symfile_complaints
,
3359 _("unknown symbol descriptor `%c'"), p
[1]);
3361 /* Ignore it; perhaps it is an extension that we don't
3370 /* Solaris 2 end of module, finish current partial
3371 symbol table. dbx_end_psymtab will set
3372 pst->texthigh to the proper value, which is
3373 necessary if a module compiled without
3374 debugging info follows this module. */
3376 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3378 pst
= (struct partial_symtab
*) 0;
3380 dependencies_used
= 0;
3385 if (sh
.value
> save_pst
->texthigh
)
3386 save_pst
->texthigh
= sh
.value
;
3391 case N_SSYM
: /* Claim: Structure or union
3392 element. Hopefully, I can
3394 case N_ENTRY
: /* Alternate entry point; can
3396 case N_MAIN
: /* Can definitely ignore this. */
3397 case N_CATCH
: /* These are GNU C++ extensions. */
3398 case N_EHDECL
: /* that can safely be ignored here. */
3408 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3409 case N_DEFD
: /* GNU Modula-2 */
3410 case N_ALIAS
: /* SunPro F77: alias name, ignore
3413 case N_OBJ
: /* Useless types from Solaris. */
3415 /* These symbols aren't interesting; don't worry about
3421 /* If we haven't found it yet, ignore it. It's
3422 probably some new type we don't know about yet. */
3423 complaint (&symfile_complaints
,
3424 _("unknown symbol type %s"),
3425 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3429 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3432 /* end - Handle continuation */
3437 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3440 enum address_class theclass
;
3441 CORE_ADDR minsym_value
;
3443 (*swap_sym_in
) (cur_bfd
,
3444 ((char *) debug_info
->external_sym
3445 + ((fh
->isymBase
+ cur_sdx
)
3446 * external_sym_size
)),
3449 if (ECOFF_IS_STAB (&sh
))
3455 /* Non absolute static symbols go into the minimal table. */
3456 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3457 || (sh
.index
== indexNil
3458 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3460 /* FIXME, premature? */
3465 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3467 minsym_value
= sh
.value
;
3473 /* The value of a stEnd symbol is the displacement from the
3474 corresponding start symbol value, do not relocate it. */
3476 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3477 SECT_OFF_TEXT (objfile
));
3484 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3485 SECT_OFF_DATA (objfile
));
3489 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3490 SECT_OFF_BSS (objfile
));
3501 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3503 SECT_OFF_TEXT (objfile
),
3509 /* Ignore all parameter symbol records. */
3510 if (sh
.index
>= hdr
->iauxMax
)
3512 /* Should not happen, but does when cross-compiling
3513 with the MIPS compiler. FIXME -- pull later. */
3514 index_complaint (name
);
3515 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3518 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3519 (debug_info
->external_aux
3523 if (new_sdx
<= cur_sdx
)
3525 /* This should not happen either... FIXME. */
3526 complaint (&symfile_complaints
,
3527 _("bad proc end in aux found from symbol %s"),
3529 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3532 /* For stProc symbol records, we need to check the
3533 storage class as well, as only (stProc, scText)
3534 entries represent "real" procedures - See the
3535 Compaq document titled "Object File / Symbol Table
3536 Format Specification" for more information. If the
3537 storage class is not scText, we discard the whole
3538 block of symbol records for this stProc. */
3539 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3542 /* Usually there is a local and a global stProc symbol
3543 for a function. This means that the function name
3544 has already been entered into the mimimal symbol table
3545 while processing the global symbols in pass 2 above.
3546 One notable exception is the PROGRAM name from
3547 f77 compiled executables, it is only put out as
3548 local stProc symbol, and a global MAIN__ stProc symbol
3549 points to it. It doesn't matter though, as gdb is
3550 still able to find the PROGRAM name via the partial
3551 symbol table, and the MAIN__ symbol via the minimal
3553 if (sh
.st
== stProc
)
3554 add_psymbol_to_list (name
, strlen (name
), 1,
3555 VAR_DOMAIN
, LOC_BLOCK
,
3556 &objfile
->global_psymbols
,
3557 sh
.value
, psymtab_language
, objfile
);
3559 add_psymbol_to_list (name
, strlen (name
), 1,
3560 VAR_DOMAIN
, LOC_BLOCK
,
3561 &objfile
->static_psymbols
,
3562 sh
.value
, psymtab_language
, objfile
);
3564 procaddr
= sh
.value
;
3567 (*swap_sym_in
) (cur_bfd
,
3568 ((char *) debug_info
->external_sym
3569 + ((fh
->isymBase
+ cur_sdx
- 1)
3570 * external_sym_size
)),
3575 /* Kludge for Irix 5.2 zero fh->adr. */
3577 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3578 pst
->textlow
= procaddr
;
3580 high
= procaddr
+ sh
.value
;
3581 if (high
> pst
->texthigh
)
3582 pst
->texthigh
= high
;
3585 case stStatic
: /* Variable */
3586 if (SC_IS_DATA (sh
.sc
))
3587 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3589 SECT_OFF_DATA (objfile
),
3592 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3594 SECT_OFF_BSS (objfile
),
3596 theclass
= LOC_STATIC
;
3599 case stIndirect
: /* Irix5 forward declaration */
3600 /* Skip forward declarations from Irix5 cc. */
3603 case stTypedef
: /* Typedef */
3604 /* Skip typedefs for forward declarations and opaque
3605 structs from alpha and mips cc. */
3606 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3608 theclass
= LOC_TYPEDEF
;
3611 case stConstant
: /* Constant decl */
3612 theclass
= LOC_CONST
;
3618 case stBlock
: /* { }, str, un, enum */
3619 /* Do not create a partial symbol for cc unnamed aggregates
3620 and gcc empty aggregates. */
3621 if ((sh
.sc
== scInfo
3622 || SC_IS_COMMON (sh
.sc
))
3624 && sh
.index
!= cur_sdx
+ 2)
3626 add_psymbol_to_list (name
, strlen (name
), 1,
3627 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3628 &objfile
->static_psymbols
,
3629 0, psymtab_language
, objfile
);
3631 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3633 /* Skip over the block. */
3635 if (new_sdx
<= cur_sdx
)
3637 /* This happens with the Ultrix kernel. */
3638 complaint (&symfile_complaints
,
3639 _("bad aux index at block symbol %s"), name
);
3640 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3645 case stFile
: /* File headers */
3646 case stLabel
: /* Labels */
3647 case stEnd
: /* Ends of files */
3650 case stLocal
: /* Local variables */
3651 /* Normally these are skipped because we skip over
3652 all blocks we see. However, these can occur
3653 as visible symbols in a .h file that contains code. */
3657 /* Both complaints are valid: one gives symbol name,
3658 the other the offending symbol type. */
3659 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3661 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3665 /* Use this gdb symbol. */
3666 add_psymbol_to_list (name
, strlen (name
), 1,
3667 VAR_DOMAIN
, theclass
,
3668 &objfile
->static_psymbols
,
3669 sh
.value
, psymtab_language
, objfile
);
3671 cur_sdx
++; /* Go to next file symbol. */
3674 /* Now do enter the external symbols. */
3675 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3676 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3677 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3678 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3679 for (; --cur_sdx
>= 0; ext_ptr
++)
3681 enum address_class theclass
;
3686 if (ext_ptr
->ifd
!= f_idx
)
3687 internal_error (__FILE__
, __LINE__
,
3688 _("failed internal consistency check"));
3689 psh
= &ext_ptr
->asym
;
3691 /* Do not add undefined symbols to the partial symbol table. */
3692 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3695 svalue
= psh
->value
;
3700 svalue
+= ANOFFSET (objfile
->section_offsets
,
3701 SECT_OFF_TEXT (objfile
));
3708 svalue
+= ANOFFSET (objfile
->section_offsets
,
3709 SECT_OFF_DATA (objfile
));
3713 svalue
+= ANOFFSET (objfile
->section_offsets
,
3714 SECT_OFF_BSS (objfile
));
3721 /* These are generated for static symbols in .o files,
3726 /* External procedure symbols have been entered
3727 into the minimal symbol table in pass 2 above.
3728 Ignore them, as parse_external will ignore them too. */
3731 theclass
= LOC_LABEL
;
3734 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3735 /* Fall through, pretend it's global. */
3737 /* Global common symbols are resolved by the runtime loader,
3739 if (SC_IS_COMMON (psh
->sc
))
3742 theclass
= LOC_STATIC
;
3745 name
= debug_info
->ssext
+ psh
->iss
;
3746 add_psymbol_to_list (name
, strlen (name
), 1,
3747 VAR_DOMAIN
, theclass
,
3748 &objfile
->global_psymbols
,
3749 svalue
, psymtab_language
, objfile
);
3753 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3754 empty and put on the free list. */
3755 fdr_to_pst
[f_idx
].pst
3756 = dbx_end_psymtab (objfile
, save_pst
,
3757 psymtab_include_list
, includes_used
,
3758 -1, save_pst
->texthigh
,
3759 dependency_list
, dependencies_used
,
3762 dependencies_used
= 0;
3764 /* The objfile has its functions reordered if this partial symbol
3765 table overlaps any other partial symbol table.
3766 We cannot assume a reordered objfile if a partial symbol table
3767 is contained within another partial symbol table, as partial symbol
3768 tables for include files with executable code are contained
3769 within the partial symbol table for the including source file,
3770 and we do not want to flag the objfile reordered for these cases.
3772 This strategy works well for Irix-5.2 shared libraries, but we
3773 might have to use a more elaborate (and slower) algorithm for
3775 save_pst
= fdr_to_pst
[f_idx
].pst
;
3776 if (save_pst
!= NULL
3777 && save_pst
->textlow
!= 0
3778 && !(objfile
->flags
& OBJF_REORDERED
))
3780 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3783 && save_pst
->textlow
>= pst
->textlow
3784 && save_pst
->textlow
< pst
->texthigh
3785 && save_pst
->texthigh
> pst
->texthigh
)
3787 objfile
->flags
|= OBJF_REORDERED
;
3794 /* Now scan the FDRs for dependencies. */
3795 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3797 fh
= f_idx
+ debug_info
->fdr
;
3798 pst
= fdr_to_pst
[f_idx
].pst
;
3800 if (pst
== (struct partial_symtab
*) NULL
)
3803 /* This should catch stabs-in-ecoff. */
3807 /* Skip the first file indirect entry as it is a self dependency for
3808 source files or a reverse .h -> .c dependency for header files. */
3809 pst
->number_of_dependencies
= 0;
3811 ((struct partial_symtab
**)
3812 obstack_alloc (&objfile
->objfile_obstack
,
3814 * sizeof (struct partial_symtab
*))));
3815 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3819 (*swap_rfd_in
) (cur_bfd
,
3820 ((char *) debug_info
->external_rfd
3821 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3823 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3825 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3829 /* Skip self dependencies of header files. */
3833 /* Do not add to dependeny list if psymtab was empty. */
3834 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3836 pst
->dependencies
[pst
->number_of_dependencies
++]
3837 = fdr_to_pst
[rh
].pst
;
3841 /* Remove the dummy psymtab created for -O3 images above, if it is
3842 still empty, to enable the detection of stripped executables. */
3843 if (objfile
->psymtabs
->next
== NULL
3844 && objfile
->psymtabs
->number_of_dependencies
== 0
3845 && objfile
->psymtabs
->n_global_syms
== 0
3846 && objfile
->psymtabs
->n_static_syms
== 0)
3847 objfile
->psymtabs
= NULL
;
3848 do_cleanups (old_chain
);
3851 /* If the current psymbol has an enumerated type, we need to add
3852 all the enum constants to the partial symbol table. */
3855 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3858 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3859 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3860 char *ext_sym
= ((char *) debug_info
->external_sym
3861 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3871 /* It is an enumerated type if the next symbol entry is a stMember
3872 and its auxiliary index is indexNil or its auxiliary entry
3873 is a plain btNil or btVoid.
3874 Alpha cc -migrate enums are recognized by a zero index and
3875 a zero symbol value.
3876 DU 4.0 cc enums are recognized by a member type of btEnum without
3877 qualifiers and a zero symbol value. */
3878 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3879 if (sh
.st
!= stMember
)
3882 if (sh
.index
== indexNil
3883 || (sh
.index
== 0 && svalue
== 0))
3885 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3886 &(debug_info
->external_aux
3887 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3889 if ((tir
.bt
!= btNil
3891 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3892 || tir
.tq0
!= tqNil
)
3904 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3905 if (sh
.st
!= stMember
)
3907 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3909 /* Note that the value doesn't matter for enum constants
3910 in psymtabs, just in symtabs. */
3911 add_psymbol_to_list (name
, strlen (name
), 1,
3912 VAR_DOMAIN
, LOC_CONST
,
3913 &objfile
->static_psymbols
,
3914 0, psymtab_language
, objfile
);
3915 ext_sym
+= external_sym_size
;
3919 /* Get the next symbol. OBJFILE is unused. */
3922 mdebug_next_symbol_text (struct objfile
*objfile
)
3927 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3928 ((char *) debug_info
->external_sym
3929 + ((cur_fdr
->isymBase
+ cur_sdx
)
3930 * debug_swap
->external_sym_size
)),
3932 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3935 /* Ancillary function to psymtab_to_symtab(). Does all the work
3936 for turning the partial symtab PST into a symtab, recurring
3937 first on all dependent psymtabs. The argument FILENAME is
3938 only passed so we can see in debug stack traces what file
3941 This function has a split personality, based on whether the
3942 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3943 The flow of control and even the memory allocation differs. FIXME. */
3946 psymtab_to_symtab_1 (struct objfile
*objfile
,
3947 struct partial_symtab
*pst
, const char *filename
)
3949 bfd_size_type external_sym_size
;
3950 bfd_size_type external_pdr_size
;
3951 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3952 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3954 struct compunit_symtab
*cust
= NULL
;
3956 struct linetable
*lines
;
3957 CORE_ADDR lowest_pdr_addr
= 0;
3958 int last_symtab_ended
= 0;
3959 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3965 /* Read in all partial symbtabs on which this one is dependent.
3966 NOTE that we do have circular dependencies, sigh. We solved
3967 that by setting pst->readin before this point. */
3969 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3970 if (!pst
->dependencies
[i
]->readin
)
3972 /* Inform about additional files to be read in. */
3975 fputs_filtered (" ", gdb_stdout
);
3977 fputs_filtered ("and ", gdb_stdout
);
3979 printf_filtered ("%s...",
3980 pst
->dependencies
[i
]->filename
);
3981 wrap_here (""); /* Flush output */
3982 gdb_flush (gdb_stdout
);
3984 /* We only pass the filename for debug purposes. */
3985 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3986 pst
->dependencies
[i
]->filename
);
3989 /* Do nothing if this is a dummy psymtab. */
3991 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3992 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3995 /* Now read the symbols for this symtab. */
3997 cur_bfd
= CUR_BFD (pst
);
3998 debug_swap
= DEBUG_SWAP (pst
);
3999 debug_info
= DEBUG_INFO (pst
);
4000 pending_list
= PENDING_LIST (pst
);
4001 external_sym_size
= debug_swap
->external_sym_size
;
4002 external_pdr_size
= debug_swap
->external_pdr_size
;
4003 swap_sym_in
= debug_swap
->swap_sym_in
;
4004 swap_pdr_in
= debug_swap
->swap_pdr_in
;
4005 mdebugread_objfile
= objfile
;
4006 cur_fd
= FDR_IDX (pst
);
4007 fh
= ((cur_fd
== -1)
4009 : debug_info
->fdr
+ cur_fd
);
4012 /* See comment in parse_partial_symbols about the @stabs sentinel. */
4013 processing_gcc_compilation
= 0;
4014 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
4018 (*swap_sym_in
) (cur_bfd
,
4019 ((char *) debug_info
->external_sym
4020 + (fh
->isymBase
+ 1) * external_sym_size
),
4022 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
4025 /* We indicate that this is a GCC compilation so that certain
4026 features will be enabled in stabsread/dbxread. */
4027 processing_gcc_compilation
= 2;
4031 if (processing_gcc_compilation
!= 0)
4033 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4035 /* This symbol table contains stabs-in-ecoff entries. */
4037 /* Parse local symbols first. */
4039 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
4041 mdebugread_objfile
= NULL
;
4044 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4050 (*swap_sym_in
) (cur_bfd
,
4051 (((char *) debug_info
->external_sym
)
4052 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4054 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4056 /* XXX This is a hack. It will go away! */
4057 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4059 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4061 /* We should never get non N_STAB symbols here, but they
4062 should be harmless, so keep process_one_symbol from
4063 complaining about them. */
4064 if (type_code
& N_STAB
)
4066 /* If we found a trailing N_SO with no name, process
4067 it here instead of in process_one_symbol, so we
4068 can keep a handle to its symtab. The symtab
4069 would otherwise be ended twice, once in
4070 process_one_symbol, and once after this loop. */
4071 if (type_code
== N_SO
4072 && get_last_source_file ()
4073 && previous_stab_code
!= (unsigned char) N_SO
4076 valu
+= ANOFFSET (section_offsets
,
4077 SECT_OFF_TEXT (objfile
));
4078 previous_stab_code
= N_SO
;
4079 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4081 last_symtab_ended
= 1;
4085 last_symtab_ended
= 0;
4086 process_one_symbol (type_code
, 0, valu
, name
,
4087 section_offsets
, objfile
);
4090 /* Similarly a hack. */
4091 else if (name
[0] == '#')
4093 process_one_symbol (N_SLINE
, 0, valu
, name
,
4094 section_offsets
, objfile
);
4096 if (type_code
== N_FUN
)
4098 /* Make up special symbol to contain
4099 procedure specific info. */
4100 struct mdebug_extra_func_info
*e
=
4101 ((struct mdebug_extra_func_info
*)
4102 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4103 sizeof (struct mdebug_extra_func_info
)));
4104 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4106 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4107 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4108 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4109 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4110 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4111 e
->pdr
.framereg
= -1;
4112 add_symbol_to_list (s
, &local_symbols
);
4115 else if (sh
.st
== stLabel
)
4117 if (sh
.index
== indexNil
)
4119 /* This is what the gcc2_compiled and __gnu_compiled_*
4120 show up as. So don't complain. */
4125 /* Handle encoded stab line number. */
4126 valu
+= ANOFFSET (section_offsets
,
4127 SECT_OFF_TEXT (objfile
));
4128 record_line (current_subfile
, sh
.index
,
4129 gdbarch_addr_bits_remove (gdbarch
, valu
));
4132 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4133 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4134 /* These are generated by gcc-2.x, do not complain. */
4137 complaint (&symfile_complaints
,
4138 _("unknown stabs symbol %s"), name
);
4141 if (! last_symtab_ended
)
4143 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4147 /* There used to be a call to sort_blocks here, but this should not
4148 be necessary for stabs symtabs. And as sort_blocks modifies the
4149 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4150 it did the wrong thing if the first procedure in a file was
4151 generated via asm statements. */
4153 /* Fill in procedure info next. */
4157 struct cleanup
*old_chain
;
4163 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4164 old_chain
= make_cleanup (xfree
, pr_block
);
4166 pdr_ptr
= ((char *) debug_info
->external_pdr
4167 + fh
->ipdFirst
* external_pdr_size
);
4168 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4172 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4174 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4176 /* Determine lowest PDR address, the PDRs are not always
4178 if (pdr_in
== pr_block
)
4179 lowest_pdr_addr
= pdr_in
->adr
;
4180 else if (pdr_in
->adr
< lowest_pdr_addr
)
4181 lowest_pdr_addr
= pdr_in
->adr
;
4185 pdr_in_end
= pdr_in
+ fh
->cpd
;
4186 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4187 parse_procedure (pdr_in
, cust
, pst
);
4189 do_cleanups (old_chain
);
4194 /* This symbol table contains ordinary ecoff entries. */
4202 cust
= new_symtab ("unknown", 0, objfile
);
4206 maxlines
= 2 * fh
->cline
;
4207 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4209 /* The proper language was already determined when building
4210 the psymtab, use it. */
4211 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4214 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4216 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4218 /* Get a new lexical context. */
4220 push_parse_stack ();
4221 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4222 top_stack
->cur_block
4223 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4224 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4225 BLOCK_END (top_stack
->cur_block
) = 0;
4226 top_stack
->blocktype
= stFile
;
4227 top_stack
->cur_type
= 0;
4228 top_stack
->procadr
= 0;
4229 top_stack
->numargs
= 0;
4230 found_ecoff_debugging_info
= 0;
4237 /* Parse local symbols first. */
4238 sym_ptr
= ((char *) debug_info
->external_sym
4239 + fh
->isymBase
* external_sym_size
);
4240 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4241 while (sym_ptr
< sym_end
)
4246 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4247 c
= parse_symbol (&sh
,
4248 debug_info
->external_aux
+ fh
->iauxBase
,
4249 sym_ptr
, fh
->fBigendian
,
4250 section_offsets
, objfile
);
4251 sym_ptr
+= c
* external_sym_size
;
4254 /* Linenumbers. At the end, check if we can save memory.
4255 parse_lines has to look ahead an arbitrary number of PDR
4256 structures, so we swap them all first. */
4260 struct cleanup
*old_chain
;
4266 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4268 old_chain
= make_cleanup (xfree
, pr_block
);
4270 pdr_ptr
= ((char *) debug_info
->external_pdr
4271 + fh
->ipdFirst
* external_pdr_size
);
4272 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4276 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4278 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4280 /* Determine lowest PDR address, the PDRs are not always
4282 if (pdr_in
== pr_block
)
4283 lowest_pdr_addr
= pdr_in
->adr
;
4284 else if (pdr_in
->adr
< lowest_pdr_addr
)
4285 lowest_pdr_addr
= pdr_in
->adr
;
4288 parse_lines (fh
, pr_block
, lines
, maxlines
,
4289 pst
, lowest_pdr_addr
);
4290 if (lines
->nitems
< fh
->cline
)
4291 lines
= shrink_linetable (lines
);
4293 /* Fill in procedure info next. */
4295 pdr_in_end
= pdr_in
+ fh
->cpd
;
4296 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4297 parse_procedure (pdr_in
, NULL
, pst
);
4299 do_cleanups (old_chain
);
4303 size
= lines
->nitems
;
4306 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4307 = ((struct linetable
*)
4308 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4309 lines
, (sizeof (struct linetable
)
4310 + size
* sizeof (lines
->item
))));
4313 /* .. and our share of externals.
4314 XXX use the global list to speed up things here. How?
4315 FIXME, Maybe quit once we have found the right number of ext's? */
4316 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4317 top_stack
->cur_block
4318 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4320 top_stack
->blocktype
= stFile
;
4322 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4323 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4324 parse_external (ext_ptr
, fh
->fBigendian
,
4325 section_offsets
, objfile
);
4327 /* If there are undefined symbols, tell the user.
4328 The alpha has an undefined symbol for every symbol that is
4329 from a shared library, so tell the user only if verbose is on. */
4330 if (info_verbose
&& n_undef_symbols
)
4332 printf_filtered (_("File %s contains %d unresolved references:"),
4333 symtab_to_filename_for_display
4334 (COMPUNIT_FILETABS (cust
)),
4336 printf_filtered ("\n\t%4d variables\n\t%4d "
4337 "procedures\n\t%4d labels\n",
4338 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4339 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4344 sort_blocks (COMPUNIT_FILETABS (cust
));
4347 /* Now link the psymtab and the symtab. */
4348 pst
->compunit_symtab
= cust
;
4350 mdebugread_objfile
= NULL
;
4353 /* Ancillary parsing procedures. */
4355 /* Return 1 if the symbol pointed to by SH has a cross reference
4356 to an opaque aggregate type, else 0. */
4359 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4366 if (sh
->index
== indexNil
)
4369 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4370 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4371 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4375 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4376 if (rn
->rfd
== 0xfff)
4377 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4385 /* Lookup the type at relative index RN. Return it in TPP
4386 if found and in any event come up with its name PNAME.
4387 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4388 Return value says how many aux symbols we ate. */
4391 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4392 enum type_code type_code
,
4393 /* Use to alloc new type if none is found. */
4394 char **pname
, int bigend
, char *sym_name
)
4403 struct mdebug_pending
*pend
;
4407 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4409 /* Escape index means 'the next one'. */
4410 if (rn
->rfd
== 0xfff)
4413 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4420 /* mips cc uses a rf of -1 for opaque struct definitions.
4421 Set TYPE_FLAG_STUB for these types so that check_typedef will
4422 resolve them if the struct gets defined in another compilation unit. */
4425 *pname
= "<undefined>";
4426 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
,
4427 (char *) NULL
, mdebugread_objfile
);
4431 /* mips cc uses an escaped rn->index of 0 for struct return types
4432 of procedures that were compiled without -g. These will always remain
4434 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4436 *pname
= "<undefined>";
4440 /* Find the relative file descriptor and the symbol in it. */
4441 fh
= get_rfd (fd
, rf
);
4442 xref_fd
= fh
- debug_info
->fdr
;
4444 if (rn
->index
>= fh
->csym
)
4446 /* File indirect entry is corrupt. */
4447 *pname
= "<illegal>";
4448 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4452 /* If we have processed this symbol then we left a forwarding
4453 pointer to the type in the pending list. If not, we`ll put
4454 it in a list of pending types, to be processed later when
4455 the file will be. In any event, we collect the name for the
4458 esh
= ((char *) debug_info
->external_sym
4459 + ((fh
->isymBase
+ rn
->index
)
4460 * debug_swap
->external_sym_size
));
4461 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4463 /* Make sure that this type of cross reference can be handled. */
4464 if ((sh
.sc
!= scInfo
4465 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4466 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4467 && sh
.st
!= stEnum
))
4468 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4470 /* File indirect entry is corrupt. */
4471 *pname
= "<illegal>";
4472 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4476 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4478 pend
= is_pending_symbol (fh
, esh
);
4483 /* We have not yet seen this type. */
4485 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4489 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4491 a) forward declarations of structs/unions/enums which are not
4492 defined in this compilation unit.
4493 For these the type will be void. This is a bad design decision
4494 as cross referencing across compilation units is impossible
4495 due to the missing name.
4496 b) forward declarations of structs/unions/enums/typedefs which
4497 are defined later in this file or in another file in the same
4498 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4499 Simply cross reference those again to get the true type.
4500 The forward references are not entered in the pending list and
4501 in the symbol table. */
4503 (*debug_swap
->swap_tir_in
) (bigend
,
4504 &(debug_info
->external_aux
4505 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4507 if (tir
.tq0
!= tqNil
)
4508 complaint (&symfile_complaints
,
4509 _("illegal tq0 in forward typedef for %s"), sym_name
);
4513 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4514 mdebugread_objfile
);
4515 *pname
= "<undefined>";
4522 (debug_info
->external_aux
4523 + fh
->iauxBase
+ sh
.index
+ 1),
4524 tpp
, type_code
, pname
,
4525 fh
->fBigendian
, sym_name
);
4529 /* Follow a forward typedef. This might recursively
4530 call cross_ref till we get a non typedef'ed type.
4531 FIXME: This is not correct behaviour, but gdb currently
4532 cannot handle typedefs without type copying. Type
4533 copying is impossible as we might have mutual forward
4534 references between two files and the copied type would not
4535 get filled in when we later parse its definition. */
4536 *tpp
= parse_type (xref_fd
,
4537 debug_info
->external_aux
+ fh
->iauxBase
,
4541 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4542 add_pending (fh
, esh
, *tpp
);
4546 complaint (&symfile_complaints
,
4547 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4549 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4550 mdebugread_objfile
);
4555 else if (sh
.st
== stTypedef
)
4557 /* Parse the type for a normal typedef. This might recursively call
4558 cross_ref till we get a non typedef'ed type.
4559 FIXME: This is not correct behaviour, but gdb currently
4560 cannot handle typedefs without type copying. But type copying is
4561 impossible as we might have mutual forward references between
4562 two files and the copied type would not get filled in when
4563 we later parse its definition. */
4564 *tpp
= parse_type (xref_fd
,
4565 debug_info
->external_aux
+ fh
->iauxBase
,
4569 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4573 /* Cross reference to a struct/union/enum which is defined
4574 in another file in the same compilation unit but that file
4575 has not been parsed yet.
4576 Initialize the type only, it will be filled in when
4577 it's definition is parsed. */
4578 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
4580 add_pending (fh
, esh
, *tpp
);
4583 /* We used one auxent normally, two if we got a "next one" rf. */
4588 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4589 keeping the symtab sorted. */
4591 static struct symbol
*
4592 mylookup_symbol (char *name
, const struct block
*block
,
4593 domain_enum domain
, enum address_class theclass
)
4595 struct block_iterator iter
;
4600 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4602 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4603 && SYMBOL_DOMAIN (sym
) == domain
4604 && SYMBOL_CLASS (sym
) == theclass
4605 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4609 block
= BLOCK_SUPERBLOCK (block
);
4611 return mylookup_symbol (name
, block
, domain
, theclass
);
4616 /* Add a new symbol S to a block B. */
4619 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4621 symbol_set_symtab (s
, symtab
);
4622 dict_add_symbol (BLOCK_DICT (b
), s
);
4625 /* Add a new block B to a symtab S. */
4628 add_block (struct block
*b
, struct symtab
*s
)
4630 /* Cast away "const", but that's ok because we're building the
4631 symtab and blockvector here. */
4632 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4634 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4635 (sizeof (struct blockvector
)
4636 + BLOCKVECTOR_NBLOCKS (bv
)
4637 * sizeof (bv
->block
)));
4638 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4639 SYMTAB_BLOCKVECTOR (s
) = bv
;
4641 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4644 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4645 MIPS' linenumber encoding might need more than one byte
4646 to describe it, LAST is used to detect these continuation lines.
4648 Combining lines with the same line number seems like a bad idea.
4649 E.g: There could be a line number entry with the same line number after the
4650 prologue and GDB should not ignore it (this is a better way to find
4651 a prologue than mips_skip_prologue).
4652 But due to the compressed line table format there are line number entries
4653 for the same line which are needed to bridge the gap to the next
4654 line number entry. These entries have a bogus address info with them
4655 and we are unable to tell them from intended duplicate line number
4657 This is another reason why -ggdb debugging format is preferable. */
4660 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4662 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4663 Change them to something sensible. */
4667 last
= -2; /* Make sure we record first line. */
4669 if (last
== lineno
) /* Skip continuation lines. */
4672 lt
->item
[lt
->nitems
].line
= lineno
;
4673 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4677 /* Sorting and reordering procedures. */
4679 /* Blocks with a smaller low bound should come first. */
4682 compare_blocks (const void *arg1
, const void *arg2
)
4685 struct block
**b1
= (struct block
**) arg1
;
4686 struct block
**b2
= (struct block
**) arg2
;
4688 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4690 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4694 /* Sort the blocks of a symtab S.
4695 Reorder the blocks in the blockvector by code-address,
4696 as required by some MI search routines. */
4699 sort_blocks (struct symtab
*s
)
4701 /* We have to cast away const here, but this is ok because we're
4702 constructing the blockvector in this code. */
4703 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4705 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4708 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4709 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4710 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4711 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4715 * This is very unfortunate: normally all functions are compiled in
4716 * the order they are found, but if the file is compiled -O3 things
4717 * are very different. It would be nice to find a reliable test
4718 * to detect -O3 images in advance.
4720 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4721 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4722 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4723 sizeof (struct block
*),
4728 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4730 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4731 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4732 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4733 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4736 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4737 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4739 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4740 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4741 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4742 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4746 /* Constructor/restructor/destructor procedures. */
4748 /* Allocate a new symtab for NAME. Needs an estimate of how many
4749 linenumbers MAXLINES we'll put in it. */
4751 static struct compunit_symtab
*
4752 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4754 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4755 struct symtab
*symtab
;
4756 struct blockvector
*bv
;
4758 add_compunit_symtab_to_objfile (cust
);
4759 symtab
= allocate_symtab (cust
, name
);
4761 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4763 /* All symtabs must have at least two blocks. */
4765 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4766 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4767 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4768 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4769 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4771 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4775 /* Allocate a new partial_symtab NAME. */
4777 static struct partial_symtab
*
4778 new_psymtab (char *name
, struct objfile
*objfile
)
4780 struct partial_symtab
*psymtab
;
4782 psymtab
= allocate_psymtab (name
, objfile
);
4784 /* Keep a backpointer to the file's symbols. */
4786 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4787 sizeof (struct symloc
));
4788 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4789 CUR_BFD (psymtab
) = cur_bfd
;
4790 DEBUG_SWAP (psymtab
) = debug_swap
;
4791 DEBUG_INFO (psymtab
) = debug_info
;
4792 PENDING_LIST (psymtab
) = pending_list
;
4794 /* The way to turn this into a symtab is to call... */
4795 psymtab
->read_symtab
= mdebug_read_symtab
;
4800 /* Allocate a linetable array of the given SIZE. Since the struct
4801 already includes one item, we subtract one when calculating the
4802 proper size to allocate. */
4804 static struct linetable
*
4805 new_linetable (int size
)
4807 struct linetable
*l
;
4811 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4812 l
= (struct linetable
*) xmalloc (size
);
4817 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4818 I am not so sure about the 3.4 ones.
4820 Since the struct linetable already includes one item, we subtract one when
4821 calculating the proper size to allocate. */
4823 static struct linetable
*
4824 shrink_linetable (struct linetable
*lt
)
4826 return (struct linetable
*) xrealloc ((void *) lt
,
4827 (sizeof (struct linetable
)
4829 * sizeof (lt
->item
))));
4832 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4834 static struct blockvector
*
4835 new_bvect (int nblocks
)
4837 struct blockvector
*bv
;
4840 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4841 bv
= (struct blockvector
*) xzalloc (size
);
4843 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4848 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4849 is non-zero, assume the block is associated to a function, and make
4850 sure that the symbols are stored linearly; otherwise, store them
4853 static struct block
*
4854 new_block (enum block_type type
)
4856 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4857 allocate the block. Which, in turn, suggests that the block
4858 should be allocated on an obstack. */
4859 struct block
*retval
= XCNEW (struct block
);
4861 if (type
== FUNCTION_BLOCK
)
4862 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4864 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4869 /* Create a new symbol with printname NAME. */
4871 static struct symbol
*
4872 new_symbol (char *name
)
4874 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4876 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4877 &mdebugread_objfile
->objfile_obstack
);
4878 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4882 /* Create a new type with printname NAME. */
4884 static struct type
*
4885 new_type (char *name
)
4889 t
= alloc_type (mdebugread_objfile
);
4890 TYPE_NAME (t
) = name
;
4891 INIT_CPLUS_SPECIFIC (t
);
4895 /* Read ECOFF debugging information from a BFD section. This is
4896 called from elfread.c. It parses the section into a
4897 ecoff_debug_info struct, and then lets the rest of the file handle
4901 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4902 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4904 bfd
*abfd
= objfile
->obfd
;
4905 struct ecoff_debug_info
*info
;
4906 struct cleanup
*back_to
;
4908 /* FIXME: It's not clear whether we should be getting minimal symbol
4909 information from .mdebug in an ELF file, or whether we will.
4910 Re-initialize the minimal symbol reader in case we do. */
4912 init_minimal_symbol_collection ();
4913 back_to
= make_cleanup_discard_minimal_symbols ();
4915 info
= ((struct ecoff_debug_info
*)
4916 obstack_alloc (&objfile
->objfile_obstack
,
4917 sizeof (struct ecoff_debug_info
)));
4919 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4920 error (_("Error reading ECOFF debugging information: %s"),
4921 bfd_errmsg (bfd_get_error ()));
4923 mdebug_build_psymtabs (objfile
, swap
, info
);
4925 install_minimal_symbols (objfile
);
4926 do_cleanups (back_to
);
4930 _initialize_mdebugread (void)
4932 basic_type_data
= register_objfile_data ();
4934 mdebug_register_index
4935 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4936 mdebug_regparm_index
4937 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);