1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2016 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
46 #include "filenames.h"
48 #include "gdb_obstack.h"
50 #include "stabsread.h"
51 #include "complaints.h"
53 #include "gdb-demangle.h"
55 #include "dictionary.h"
56 #include "mdebugread.h"
63 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
65 #include "libaout.h" /* Private BFD a.out information. */
66 #include "aout/aout64.h"
67 #include "aout/stab_gnu.h" /* STABS information. */
69 #include "expression.h"
71 extern void _initialize_mdebugread (void);
73 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
74 We use this define in order to know whether we should override a
75 symbol's ECOFF section with its ELF section. This is necessary in
76 case the symbol's ELF section could not be represented in ECOFF. */
77 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
78 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
80 /* The objfile we are currently reading. */
82 static struct objfile
*mdebugread_objfile
;
86 /* We put a pointer to this structure in the read_symtab_private field
91 /* Index of the FDR that this psymtab represents. */
93 /* The BFD that the psymtab was created from. */
95 const struct ecoff_debug_swap
*debug_swap
;
96 struct ecoff_debug_info
*debug_info
;
97 struct mdebug_pending
**pending_list
;
98 /* Pointer to external symbols for this file. */
100 /* Size of extern_tab. */
102 enum language pst_language
;
105 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
106 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
107 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
108 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
109 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
110 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
112 #define SC_IS_TEXT(sc) ((sc) == scText \
113 || (sc) == scRConst \
116 #define SC_IS_DATA(sc) ((sc) == scData \
121 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
122 #define SC_IS_BSS(sc) ((sc) == scBss)
123 #define SC_IS_SBSS(sc) ((sc) == scSBss)
124 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
126 /* Various complaints about symbol reading that don't abort the process. */
128 index_complaint (const char *arg1
)
130 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
134 unknown_ext_complaint (const char *arg1
)
136 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
140 basic_type_complaint (int arg1
, const char *arg2
)
142 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
147 bad_tag_guess_complaint (const char *arg1
)
149 complaint (&symfile_complaints
,
150 _("guessed tag type of %s incorrectly"), arg1
);
154 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
156 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
161 unexpected_type_code_complaint (const char *arg1
)
163 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
166 /* Macros and extra defs. */
168 /* Puns: hard to find whether -g was used and how. */
170 #define MIN_GLEVEL GLEVEL_0
171 #define compare_glevel(a,b) \
172 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
173 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
175 /* Things that really are local to this module. */
177 /* Remember what we deduced to be the source language of this psymtab. */
179 static enum language psymtab_language
= language_unknown
;
185 /* How to parse debugging information for CUR_BFD. */
187 static const struct ecoff_debug_swap
*debug_swap
;
189 /* Pointers to debugging information for CUR_BFD. */
191 static struct ecoff_debug_info
*debug_info
;
193 /* Pointer to current file decriptor record, and its index. */
198 /* Index of current symbol. */
202 /* Note how much "debuggable" this image is. We would like
203 to see at least one FDR with full symbols. */
205 static int max_gdbinfo
;
206 static int max_glevel
;
208 /* When examining .o files, report on undefined symbols. */
210 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
212 /* Pseudo symbol to use when putting stabs into the symbol table. */
214 static char stabs_symbol
[] = STABS_SYMBOL
;
216 /* Nonzero if we have seen ecoff debugging info for a file. */
218 static int found_ecoff_debugging_info
;
220 /* Forward declarations. */
222 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
225 static void parse_partial_symbols (struct objfile
*);
227 static int has_opaque_xref (FDR
*, SYMR
*);
229 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
230 char **, int, char *);
232 static struct symbol
*new_symbol (char *);
234 static struct type
*new_type (char *);
236 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
238 static struct block
*new_block (enum block_type
);
240 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
242 static struct linetable
*new_linetable (int);
244 static struct blockvector
*new_bvect (int);
246 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
249 static struct symbol
*mylookup_symbol (char *, const struct block
*,
250 domain_enum
, enum address_class
);
252 static void sort_blocks (struct symtab
*);
254 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
256 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
257 struct partial_symtab
*, const char *);
259 static void add_block (struct block
*, struct symtab
*);
261 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
263 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
265 static struct linetable
*shrink_linetable (struct linetable
*);
267 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
270 static char *mdebug_next_symbol_text (struct objfile
*);
272 /* Exported procedure: Builds a symtab from the partial symtab SELF.
273 Restores the environment in effect when SELF was created, delegates
274 most of the work to an ancillary procedure, and sorts
275 and reorders the symtab list at the end. SELF is not NULL. */
278 mdebug_read_symtab (struct partial_symtab
*self
, struct objfile
*objfile
)
282 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
283 gdb_flush (gdb_stdout
);
286 next_symbol_text_func
= mdebug_next_symbol_text
;
288 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
290 /* Match with global symbols. This only needs to be done once,
291 after all of the symtabs and dependencies have been read in. */
292 scan_file_globals (objfile
);
295 printf_filtered (_("done.\n"));
298 /* File-level interface functions. */
300 /* Find a file descriptor given its index RF relative to a file CF. */
303 get_rfd (int cf
, int rf
)
309 fdrs
= debug_info
->fdr
;
311 /* Object files do not have the RFD table, all refs are absolute. */
314 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
315 ((char *) debug_info
->external_rfd
317 * debug_swap
->external_rfd_size
)),
322 /* Return a safer print NAME for a file descriptor. */
328 return "<stripped file>";
331 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
335 /* Read in and parse the symtab of the file OBJFILE. Symbols from
336 different sections are relocated via the SECTION_OFFSETS. */
339 mdebug_build_psymtabs (struct objfile
*objfile
,
340 const struct ecoff_debug_swap
*swap
,
341 struct ecoff_debug_info
*info
)
343 cur_bfd
= objfile
->obfd
;
347 stabsread_new_init ();
348 buildsym_new_init ();
349 free_header_files ();
350 init_header_files ();
352 /* Make sure all the FDR information is swapped in. */
353 if (info
->fdr
== (FDR
*) NULL
)
359 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
360 (info
->symbolic_header
.ifdMax
362 fdr_src
= (char *) info
->external_fdr
;
364 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
366 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
367 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
370 parse_partial_symbols (objfile
);
373 /* Check to make sure file was compiled with -g. If not, warn the
374 user of this limitation. */
375 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
377 if (max_gdbinfo
== 0)
378 printf_unfiltered (_("\n%s not compiled with -g, "
379 "debugging support is limited.\n"),
381 printf_unfiltered (_("You should compile with -g2 or "
382 "-g3 for best debugging support.\n"));
383 gdb_flush (gdb_stdout
);
388 /* Local utilities */
390 /* Map of FDR indexes to partial symtabs. */
394 struct partial_symtab
*pst
; /* the psymtab proper */
395 long n_globals
; /* exported globals (external symbols) */
396 long globals_offset
; /* cumulative */
400 /* Utility stack, used to nest procedures and blocks properly.
401 It is a doubly linked list, to avoid too many alloc/free.
402 Since we might need it quite a few times it is NOT deallocated
405 static struct parse_stack
407 struct parse_stack
*next
, *prev
;
408 struct symtab
*cur_st
; /* Current symtab. */
409 struct block
*cur_block
; /* Block in it. */
411 /* What are we parsing. stFile, or stBlock are for files and
412 blocks. stProc or stStaticProc means we have seen the start of a
413 procedure, but not the start of the block within in. When we see
414 the start of that block, we change it to stNil, without pushing a
415 new block, i.e. stNil means both a procedure and a block. */
419 struct type
*cur_type
; /* Type we parse fields for. */
420 int cur_field
; /* Field number in cur_type. */
421 CORE_ADDR procadr
; /* Start addres of this procedure. */
422 int numargs
; /* Its argument count. */
425 *top_stack
; /* Top stack ptr */
428 /* Enter a new lexical context. */
431 push_parse_stack (void)
433 struct parse_stack
*newobj
;
435 /* Reuse frames if possible. */
436 if (top_stack
&& top_stack
->prev
)
437 newobj
= top_stack
->prev
;
439 newobj
= XCNEW (struct parse_stack
);
440 /* Initialize new frame with previous content. */
443 struct parse_stack
*prev
= newobj
->prev
;
445 *newobj
= *top_stack
;
446 top_stack
->prev
= newobj
;
448 newobj
->next
= top_stack
;
453 /* Exit a lexical context. */
456 pop_parse_stack (void)
461 top_stack
= top_stack
->next
;
465 /* Cross-references might be to things we haven't looked at
466 yet, e.g. type references. To avoid too many type
467 duplications we keep a quick fixup table, an array
468 of lists of references indexed by file descriptor. */
470 struct mdebug_pending
472 struct mdebug_pending
*next
; /* link */
473 char *s
; /* the unswapped symbol */
474 struct type
*t
; /* its partial type descriptor */
478 /* The pending information is kept for an entire object file. We
479 allocate the pending information table when we create the partial
480 symbols, and we store a pointer to the single table in each
483 static struct mdebug_pending
**pending_list
;
485 /* Check whether we already saw symbol SH in file FH. */
487 static struct mdebug_pending
*
488 is_pending_symbol (FDR
*fh
, char *sh
)
490 int f_idx
= fh
- debug_info
->fdr
;
491 struct mdebug_pending
*p
;
493 /* Linear search is ok, list is typically no more than 10 deep. */
494 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
500 /* Add a new symbol SH of type T. */
503 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
505 int f_idx
= fh
- debug_info
->fdr
;
506 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
508 /* Make sure we do not make duplicates. */
511 p
= ((struct mdebug_pending
*)
512 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
513 sizeof (struct mdebug_pending
)));
516 p
->next
= pending_list
[f_idx
];
517 pending_list
[f_idx
] = p
;
522 /* Parsing Routines proper. */
525 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
527 complaint (&symfile_complaints
,
528 _("bad register number %d (max %d) in symbol %s"),
529 regnum
, num_regs
- 1, sym
);
532 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
533 For blocks, procedures and types we open a new lexical context.
534 This is basically just a big switch on the symbol's type. Argument
535 AX is the base pointer of aux symbols for this file (fh->iauxBase).
536 EXT_SH points to the unswapped symbol, which is needed for struct,
537 union, etc., types; it is NULL for an EXTR. BIGEND says whether
538 aux symbols are big-endian or little-endian. Return count of
539 SYMR's handled (normally one). */
542 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
544 int regno
= gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
547 || regno
>= (gdbarch_num_regs (gdbarch
)
548 + gdbarch_num_pseudo_regs (gdbarch
)))
550 reg_value_complaint (regno
,
551 gdbarch_num_regs (gdbarch
)
552 + gdbarch_num_pseudo_regs (gdbarch
),
553 SYMBOL_PRINT_NAME (sym
));
555 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
561 static const struct symbol_register_ops mdebug_register_funcs
= {
565 /* The "aclass" indices for computed symbols. */
567 static int mdebug_register_index
;
568 static int mdebug_regparm_index
;
570 /* Common code for symbols describing data. */
573 add_data_symbol (SYMR
*sh
, union aux_ext
*ax
, int bigend
,
574 struct symbol
*s
, int aclass_index
, struct block
*b
,
575 struct objfile
*objfile
, char *name
)
577 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
578 SYMBOL_ACLASS_INDEX (s
) = aclass_index
;
579 add_symbol (s
, top_stack
->cur_st
, b
);
581 /* Type could be missing if file is compiled without debugging info. */
582 if (SC_IS_UNDEF (sh
->sc
)
583 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
584 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
586 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
587 /* Value of a data symbol is its memory address. */
591 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
592 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
594 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
595 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
596 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
600 struct mdebug_pending
*pend
;
605 long svalue
= sh
->value
;
608 if (ext_sh
== (char *) NULL
)
609 name
= debug_info
->ssext
+ sh
->iss
;
611 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
617 /* Do not relocate relative values.
618 The value of a stEnd symbol is the displacement from the
619 corresponding start symbol value.
620 The value of a stBlock symbol is the displacement from the
621 procedure address. */
622 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
623 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
630 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
634 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
643 case stGlobal
: /* External symbol, goes into global block. */
644 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
646 s
= new_symbol (name
);
647 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
648 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
651 case stStatic
: /* Static data, goes into current block. */
652 b
= top_stack
->cur_block
;
653 s
= new_symbol (name
);
654 if (SC_IS_COMMON (sh
->sc
))
656 /* It is a FORTRAN common block. At least for SGI Fortran the
657 address is not in the symbol; we need to fix it later in
658 scan_file_globals. */
659 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
660 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
661 global_sym_chain
[bucket
] = s
;
664 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
665 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
668 case stLocal
: /* Local variable, goes into current block. */
669 b
= top_stack
->cur_block
;
670 s
= new_symbol (name
);
671 SYMBOL_VALUE (s
) = svalue
;
672 if (sh
->sc
== scRegister
)
673 add_data_symbol (sh
, ax
, bigend
, s
, mdebug_register_index
,
676 add_data_symbol (sh
, ax
, bigend
, s
, LOC_LOCAL
,
680 case stParam
: /* Arg to procedure, goes into current
683 found_ecoff_debugging_info
= 1;
684 top_stack
->numargs
++;
686 /* Special GNU C++ name. */
687 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
688 name
= "this"; /* FIXME, not alloc'd in obstack. */
689 s
= new_symbol (name
);
691 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
692 SYMBOL_IS_ARGUMENT (s
) = 1;
696 /* Pass by value in register. */
697 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
700 /* Pass by reference on stack. */
701 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
704 /* Pass by reference in register. */
705 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
708 /* Pass by value on stack. */
709 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
712 SYMBOL_VALUE (s
) = svalue
;
713 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
714 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
717 case stLabel
: /* label, goes into current block. */
718 s
= new_symbol (name
);
719 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
720 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
721 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
722 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
723 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
726 case stProc
: /* Procedure, usually goes into global block. */
727 case stStaticProc
: /* Static procedure, goes into current block. */
728 /* For stProc symbol records, we need to check the storage class
729 as well, as only (stProc, scText) entries represent "real"
730 procedures - See the Compaq document titled "Object File /
731 Symbol Table Format Specification" for more information.
732 If the storage class is not scText, we discard the whole block
733 of symbol records for this stProc. */
734 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
736 char *ext_tsym
= ext_sh
;
737 int keep_counting
= 1;
740 while (keep_counting
)
742 ext_tsym
+= external_sym_size
;
743 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
753 complaint (&symfile_complaints
,
754 _("unknown symbol type 0x%x"), sh
->st
);
760 s
= new_symbol (name
);
761 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
762 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
763 /* Type of the return value. */
764 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
765 t
= objfile_type (objfile
)->builtin_int
;
768 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
769 if (strcmp (name
, "malloc") == 0
770 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
772 /* I don't know why, but, at least under Alpha GNU/Linux,
773 when linking against a malloc without debugging
774 symbols, its read as a function returning void---this
775 is bad because it means we cannot call functions with
776 string arguments interactively; i.e., "call
777 printf("howdy\n")" would fail with the error message
778 "program has no memory available". To avoid this, we
779 patch up the type and make it void*
780 instead. (davidm@azstarnet.com). */
781 t
= make_pointer_type (t
, NULL
);
784 b
= top_stack
->cur_block
;
785 if (sh
->st
== stProc
)
787 const struct blockvector
*bv
788 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
790 /* The next test should normally be true, but provides a
791 hook for nested functions (which we don't want to make
793 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
794 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
795 /* Irix 5 sometimes has duplicate names for the same
796 function. We want to add such names up at the global
797 level, not as a nested function. */
798 else if (sh
->value
== top_stack
->procadr
)
799 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
801 add_symbol (s
, top_stack
->cur_st
, b
);
803 /* Make a type for the procedure itself. */
804 SYMBOL_TYPE (s
) = lookup_function_type (t
);
806 /* All functions in C++ have prototypes. For C we don't have enough
807 information in the debug info. */
808 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
809 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
811 /* Create and enter a new lexical context. */
812 b
= new_block (FUNCTION_BLOCK
);
813 SYMBOL_BLOCK_VALUE (s
) = b
;
814 BLOCK_FUNCTION (b
) = s
;
815 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
816 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
817 add_block (b
, top_stack
->cur_st
);
819 /* Not if we only have partial info. */
820 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
824 top_stack
->cur_block
= b
;
825 top_stack
->blocktype
= sh
->st
;
826 top_stack
->cur_type
= SYMBOL_TYPE (s
);
827 top_stack
->cur_field
= -1;
828 top_stack
->procadr
= sh
->value
;
829 top_stack
->numargs
= 0;
832 /* Beginning of code for structure, union, and enum definitions.
833 They all share a common set of local variables, defined here. */
835 enum type_code type_code
;
841 case stStruct
: /* Start a block defining a struct type. */
842 type_code
= TYPE_CODE_STRUCT
;
843 goto structured_common
;
845 case stUnion
: /* Start a block defining a union type. */
846 type_code
= TYPE_CODE_UNION
;
847 goto structured_common
;
849 case stEnum
: /* Start a block defining an enum type. */
850 type_code
= TYPE_CODE_ENUM
;
851 goto structured_common
;
853 case stBlock
: /* Either a lexical block, or some type. */
854 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
855 goto case_stBlock_code
; /* Lexical block */
857 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
859 /* Common code for handling struct, union, enum, and/or as-yet-
860 unknown-type blocks of info about structured data. `type_code'
861 has been set to the proper TYPE_CODE, if we know it. */
863 found_ecoff_debugging_info
= 1;
865 top_stack
->blocktype
= stBlock
;
867 /* First count the number of fields and the highest value. */
870 for (ext_tsym
= ext_sh
+ external_sym_size
;
872 ext_tsym
+= external_sym_size
)
876 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
881 /* C++ encodes class types as structures where there the
882 methods are encoded as stProc. The scope of stProc
883 symbols also ends with stEnd, thus creating a risk of
884 taking the wrong stEnd symbol record as the end of
885 the current struct, which would cause GDB to undercount
886 the real number of fields in this struct. To make sure
887 we really reached the right stEnd symbol record, we
888 check the associated name, and match it against the
889 struct name. Since method names are mangled while
890 the class name is not, there is no risk of having a
891 method whose name is identical to the class name
892 (in particular constructor method names are different
893 from the class name). There is therefore no risk that
894 this check stops the count on the StEnd of a method.
896 Also, assume that we're really at the end when tsym.iss
898 if (tsym
.iss
== issNull
899 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
905 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
907 /* If the type of the member is Nil (or Void),
908 without qualifiers, assume the tag is an
910 Alpha cc -migrate enums are recognized by a zero
911 index and a zero symbol value.
912 DU 4.0 cc enums are recognized by a member type of
913 btEnum without qualifiers and a zero symbol value. */
914 if (tsym
.index
== indexNil
915 || (tsym
.index
== 0 && sh
->value
== 0))
916 type_code
= TYPE_CODE_ENUM
;
919 (*debug_swap
->swap_tir_in
) (bigend
,
920 &ax
[tsym
.index
].a_ti
,
922 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
923 || (tir
.bt
== btEnum
&& sh
->value
== 0))
925 type_code
= TYPE_CODE_ENUM
;
929 if (tsym
.value
> max_value
)
930 max_value
= tsym
.value
;
939 /* This is a no-op; is it trying to tell us something
940 we should be checking? */
941 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
945 /* This is something like a struct within a
946 struct. Skip over the fields of the inner
947 struct. The -1 is because the for loop will
948 increment ext_tsym. */
949 ext_tsym
= ((char *) debug_info
->external_sym
950 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
951 * external_sym_size
));
957 /* mips cc puts out a typedef for struct x if it is not yet
958 defined when it encounters
959 struct y { struct x *xp; };
964 /* Irix5 cc puts out a stIndirect for struct x if it is not
965 yet defined when it encounters
966 struct y { struct x *xp; };
971 complaint (&symfile_complaints
,
972 _("declaration block contains "
973 "unhandled symbol type %d"),
979 /* In an stBlock, there is no way to distinguish structs,
980 unions, and enums at this point. This is a bug in the
981 original design (that has been fixed with the recent
982 addition of the stStruct, stUnion, and stEnum symbol
983 types.) The way you can tell is if/when you see a variable
984 or field of that type. In that case the variable's type
985 (in the AUX table) says if the type is struct, union, or
986 enum, and points back to the stBlock here. So you can
987 patch the tag kind up later - but only if there actually is
988 a variable or field of that type.
990 So until we know for sure, we will guess at this point.
992 If the first member has index==indexNil or a void type,
993 assume we have an enumeration.
994 Otherwise, if there is more than one member, and all
995 the members have offset 0, assume we have a union.
996 Otherwise, assume we have a struct.
998 The heuristic could guess wrong in the case of of an
999 enumeration with no members or a union with one (or zero)
1000 members, or when all except the last field of a struct have
1001 width zero. These are uncommon and/or illegal situations,
1002 and in any case guessing wrong probably doesn't matter
1005 But if we later do find out we were wrong, we fixup the tag
1006 kind. Members of an enumeration must be handled
1007 differently from struct/union fields, and that is harder to
1008 patch up, but luckily we shouldn't need to. (If there are
1009 any enumeration members, we can tell for sure it's an enum
1012 if (type_code
== TYPE_CODE_UNDEF
)
1014 if (nfields
> 1 && max_value
== 0)
1015 type_code
= TYPE_CODE_UNION
;
1017 type_code
= TYPE_CODE_STRUCT
;
1020 /* Create a new type or use the pending type. */
1021 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1022 if (pend
== (struct mdebug_pending
*) NULL
)
1024 t
= new_type (NULL
);
1025 add_pending (cur_fdr
, ext_sh
, t
);
1030 /* Do not set the tag name if it is a compiler generated tag name
1031 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1032 Alpha cc puts out an sh->iss of zero for those. */
1033 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1034 TYPE_TAG_NAME (t
) = NULL
;
1036 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1037 name
, (char *) NULL
);
1039 TYPE_CODE (t
) = type_code
;
1040 TYPE_LENGTH (t
) = sh
->value
;
1041 TYPE_NFIELDS (t
) = nfields
;
1042 TYPE_FIELDS (t
) = f
= ((struct field
*)
1044 nfields
* sizeof (struct field
)));
1046 if (type_code
== TYPE_CODE_ENUM
)
1048 int unsigned_enum
= 1;
1050 /* This is a non-empty enum. */
1052 /* DEC c89 has the number of enumerators in the sh.value field,
1053 not the type length, so we have to compensate for that
1054 incompatibility quirk.
1055 This might do the wrong thing for an enum with one or two
1056 enumerators and gcc -gcoff -fshort-enums, but these cases
1057 are hopefully rare enough.
1058 Alpha cc -migrate has a sh.value field of zero, we adjust
1060 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1061 || TYPE_LENGTH (t
) == 0)
1062 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1063 for (ext_tsym
= ext_sh
+ external_sym_size
;
1065 ext_tsym
+= external_sym_size
)
1068 struct symbol
*enum_sym
;
1070 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1072 if (tsym
.st
!= stMember
)
1075 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1076 FIELD_TYPE (*f
) = t
;
1077 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1078 FIELD_BITSIZE (*f
) = 0;
1080 enum_sym
= allocate_symbol (mdebugread_objfile
);
1081 SYMBOL_SET_LINKAGE_NAME
1083 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1084 f
->name
, strlen (f
->name
)));
1085 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1086 SYMBOL_TYPE (enum_sym
) = t
;
1087 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1088 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1089 if (SYMBOL_VALUE (enum_sym
) < 0)
1091 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1093 /* Skip the stMembers that we've handled. */
1098 TYPE_UNSIGNED (t
) = 1;
1100 /* Make this the current type. */
1101 top_stack
->cur_type
= t
;
1102 top_stack
->cur_field
= 0;
1104 /* Do not create a symbol for alpha cc unnamed structs. */
1108 /* gcc puts out an empty struct for an opaque struct definitions,
1109 do not create a symbol for it either. */
1110 if (TYPE_NFIELDS (t
) == 0)
1116 s
= new_symbol (name
);
1117 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1118 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1119 SYMBOL_VALUE (s
) = 0;
1120 SYMBOL_TYPE (s
) = t
;
1121 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1124 /* End of local variables shared by struct, union, enum, and
1125 block (as yet unknown struct/union/enum) processing. */
1129 found_ecoff_debugging_info
= 1;
1130 /* Beginnning of (code) block. Value of symbol
1131 is the displacement from procedure start. */
1132 push_parse_stack ();
1134 /* Do not start a new block if this is the outermost block of a
1135 procedure. This allows the LOC_BLOCK symbol to point to the
1136 block with the local variables, so funcname::var works. */
1137 if (top_stack
->blocktype
== stProc
1138 || top_stack
->blocktype
== stStaticProc
)
1140 top_stack
->blocktype
= stNil
;
1144 top_stack
->blocktype
= stBlock
;
1145 b
= new_block (NON_FUNCTION_BLOCK
);
1146 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1147 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1148 top_stack
->cur_block
= b
;
1149 add_block (b
, top_stack
->cur_st
);
1152 case stEnd
: /* end (of anything) */
1153 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1155 /* Finished with type */
1156 top_stack
->cur_type
= 0;
1158 else if (sh
->sc
== scText
&&
1159 (top_stack
->blocktype
== stProc
||
1160 top_stack
->blocktype
== stStaticProc
))
1162 /* Finished with procedure */
1163 const struct blockvector
*bv
1164 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1165 struct mdebug_extra_func_info
*e
;
1166 struct block
*b
= top_stack
->cur_block
;
1167 struct type
*ftype
= top_stack
->cur_type
;
1170 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1172 /* Make up special symbol to contain procedure specific info. */
1173 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1174 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1175 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1176 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1177 e
= ((struct mdebug_extra_func_info
*)
1178 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1179 sizeof (struct mdebug_extra_func_info
)));
1180 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1181 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1182 e
->numargs
= top_stack
->numargs
;
1183 e
->pdr
.framereg
= -1;
1184 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1186 /* f77 emits proc-level with address bounds==[0,0],
1187 So look for such child blocks, and patch them. */
1188 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1190 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1192 if (BLOCK_SUPERBLOCK (b_bad
) == b
1193 && BLOCK_START (b_bad
) == top_stack
->procadr
1194 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1196 BLOCK_START (b_bad
) = BLOCK_START (b
);
1197 BLOCK_END (b_bad
) = BLOCK_END (b
);
1201 if (TYPE_NFIELDS (ftype
) <= 0)
1203 /* No parameter type information is recorded with the function's
1204 type. Set that from the type of the parameter symbols. */
1205 int nparams
= top_stack
->numargs
;
1211 struct block_iterator iter
;
1213 TYPE_NFIELDS (ftype
) = nparams
;
1214 TYPE_FIELDS (ftype
) = (struct field
*)
1215 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1218 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1220 if (iparams
== nparams
)
1223 if (SYMBOL_IS_ARGUMENT (sym
))
1225 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1226 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1233 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1235 /* End of (code) block. The value of the symbol is the
1236 displacement from the procedure`s start address of the
1237 end of this block. */
1238 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1240 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1242 /* End of outermost block. Pop parse stack and ignore. The
1243 following stEnd of stProc will take care of the block. */
1246 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1248 /* End of file. Pop parse stack and ignore. Higher
1249 level code deals with this. */
1253 complaint (&symfile_complaints
,
1254 _("stEnd with storage class %d not handled"), sh
->sc
);
1256 pop_parse_stack (); /* Restore previous lexical context. */
1259 case stMember
: /* member of struct or union */
1260 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1261 FIELD_NAME (*f
) = name
;
1262 SET_FIELD_BITPOS (*f
, sh
->value
);
1264 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1265 &bitsize
, bigend
, name
);
1266 FIELD_BITSIZE (*f
) = bitsize
;
1269 case stIndirect
: /* forward declaration on Irix5 */
1270 /* Forward declarations from Irix5 cc are handled by cross_ref,
1274 case stTypedef
: /* type definition */
1275 found_ecoff_debugging_info
= 1;
1277 /* Typedefs for forward declarations and opaque structs from alpha cc
1278 are handled by cross_ref, skip them. */
1282 /* Parse the type or use the pending type. */
1283 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1284 if (pend
== (struct mdebug_pending
*) NULL
)
1286 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1287 add_pending (cur_fdr
, ext_sh
, t
);
1292 /* Mips cc puts out a typedef with the name of the struct for forward
1293 declarations. These should not go into the symbol table and
1294 TYPE_NAME should not be set for them.
1295 They can't be distinguished from an intentional typedef to
1296 the same name however:
1298 struct x { int ix; int jx; };
1302 struct xx {int ixx; int jxx; };
1303 generates a cross referencing stTypedef for x and xx.
1304 The user visible effect of this is that the type of a pointer
1305 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1306 The problem is fixed with alpha cc and Irix5 cc. */
1308 /* However if the typedef cross references to an opaque aggregate, it
1309 is safe to omit it from the symbol table. */
1311 if (has_opaque_xref (cur_fdr
, sh
))
1313 s
= new_symbol (name
);
1314 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1315 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1316 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1317 SYMBOL_TYPE (s
) = t
;
1318 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1320 /* Incomplete definitions of structs should not get a name. */
1321 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1322 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1323 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1324 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1326 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1327 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1329 /* If we are giving a name to a type such as "pointer to
1330 foo" or "function returning foo", we better not set
1331 the TYPE_NAME. If the program contains "typedef char
1332 *caddr_t;", we don't want all variables of type char
1333 * to print as caddr_t. This is not just a
1334 consequence of GDB's type management; CC and GCC (at
1335 least through version 2.4) both output variables of
1336 either type char * or caddr_t with the type
1337 refering to the stTypedef symbol for caddr_t. If a future
1338 compiler cleans this up it GDB is not ready for it
1339 yet, but if it becomes ready we somehow need to
1340 disable this check (without breaking the PCC/GCC2.4
1345 Fortunately, this check seems not to be necessary
1346 for anything except pointers or functions. */
1349 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1353 case stFile
: /* file name */
1354 push_parse_stack ();
1355 top_stack
->blocktype
= sh
->st
;
1358 /* I`ve never seen these for C */
1360 break; /* register relocation */
1362 break; /* forwarding address */
1364 break; /* constant */
1366 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1375 static const struct objfile_data
*basic_type_data
;
1377 static struct type
*
1378 basic_type (int bt
, struct objfile
*objfile
)
1380 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1381 struct type
**map_bt
1382 = (struct type
**) objfile_data (objfile
, basic_type_data
);
1390 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1391 btMax
, struct type
*);
1392 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1401 tp
= objfile_type (objfile
)->builtin_void
;
1405 tp
= init_type (TYPE_CODE_PTR
, 4, TYPE_FLAG_UNSIGNED
,
1407 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1411 tp
= init_type (TYPE_CODE_INT
, 1, 0,
1416 tp
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1417 "unsigned char", objfile
);
1421 tp
= init_type (TYPE_CODE_INT
, 2, 0,
1426 tp
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1427 "unsigned short", objfile
);
1431 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1436 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1437 "unsigned int", objfile
);
1441 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1446 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1447 "unsigned long", objfile
);
1451 tp
= init_type (TYPE_CODE_FLT
,
1452 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1457 tp
= init_type (TYPE_CODE_FLT
,
1458 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1463 tp
= init_type (TYPE_CODE_COMPLEX
,
1464 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1465 "complex", objfile
);
1466 TYPE_TARGET_TYPE (tp
) = basic_type (btFloat
, objfile
);
1470 tp
= init_type (TYPE_CODE_COMPLEX
,
1471 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1472 "double complex", objfile
);
1473 TYPE_TARGET_TYPE (tp
) = basic_type (btDouble
, objfile
);
1477 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1478 good? Would we be better off with TYPE_CODE_ERROR? Should
1479 TYPE_CODE_ERROR print things in hex if it knows the size? */
1480 tp
= init_type (TYPE_CODE_INT
,
1481 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1482 "fixed decimal", objfile
);
1486 tp
= init_type (TYPE_CODE_ERROR
,
1487 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1488 "floating decimal", objfile
);
1492 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1494 tp
= init_type (TYPE_CODE_STRING
, 1, 0,
1499 tp
= objfile_type (objfile
)->builtin_void
;
1503 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1508 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1509 "unsigned long", objfile
);
1513 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1514 "long long", objfile
);
1518 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1519 "unsigned long long", objfile
);
1523 tp
= init_type (TYPE_CODE_PTR
, 8, TYPE_FLAG_UNSIGNED
,
1525 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1529 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1534 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1535 "unsigned int", objfile
);
1547 /* Parse the type information provided in the raw AX entries for
1548 the symbol SH. Return the bitfield size in BS, in case.
1549 We must byte-swap the AX entries before we use them; BIGEND says whether
1550 they are big-endian or little-endian (from fh->fBigendian). */
1552 static struct type
*
1553 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1554 int bigend
, char *sym_name
)
1557 struct type
*tp
= 0;
1558 enum type_code type_code
= TYPE_CODE_UNDEF
;
1560 /* Handle undefined types, they have indexNil. */
1561 if (aux_index
== indexNil
)
1562 return basic_type (btInt
, mdebugread_objfile
);
1564 /* Handle corrupt aux indices. */
1565 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1567 index_complaint (sym_name
);
1568 return basic_type (btInt
, mdebugread_objfile
);
1572 /* Use aux as a type information record, map its basic type. */
1573 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1574 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1577 /* Cannot use builtin types -- build our own. */
1581 type_code
= TYPE_CODE_STRUCT
;
1584 type_code
= TYPE_CODE_UNION
;
1587 type_code
= TYPE_CODE_ENUM
;
1590 type_code
= TYPE_CODE_RANGE
;
1593 type_code
= TYPE_CODE_SET
;
1596 /* alpha cc -migrate uses this for typedefs. The true type will
1597 be obtained by crossreferencing below. */
1598 type_code
= TYPE_CODE_ERROR
;
1601 /* alpha cc uses this for typedefs. The true type will be
1602 obtained by crossreferencing below. */
1603 type_code
= TYPE_CODE_ERROR
;
1606 basic_type_complaint (t
->bt
, sym_name
);
1607 return basic_type (btInt
, mdebugread_objfile
);
1611 /* Move on to next aux. */
1616 int width
= AUX_GET_WIDTH (bigend
, ax
);
1618 /* Inhibit core dumps if TIR is corrupted. */
1619 if (bs
== (int *) NULL
)
1621 /* Alpha cc -migrate encodes char and unsigned char types
1622 as short and unsigned short types with a field width of 8.
1623 Enum types also have a field width which we ignore for now. */
1624 if (t
->bt
== btShort
&& width
== 8)
1625 tp
= basic_type (btChar
, mdebugread_objfile
);
1626 else if (t
->bt
== btUShort
&& width
== 8)
1627 tp
= basic_type (btUChar
, mdebugread_objfile
);
1628 else if (t
->bt
== btEnum
)
1631 complaint (&symfile_complaints
,
1632 _("can't handle TIR fBitfield for %s"),
1640 /* A btIndirect entry cross references to an aux entry containing
1642 if (t
->bt
== btIndirect
)
1649 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1651 if (rn
->rfd
== 0xfff)
1653 rf
= AUX_GET_ISYM (bigend
, ax
);
1661 complaint (&symfile_complaints
,
1662 _("unable to cross ref btIndirect for %s"), sym_name
);
1663 return basic_type (btInt
, mdebugread_objfile
);
1665 xref_fh
= get_rfd (fd
, rf
);
1666 xref_fd
= xref_fh
- debug_info
->fdr
;
1667 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1668 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1671 /* All these types really point to some (common) MIPS type
1672 definition, and only the type-qualifiers fully identify
1673 them. We'll make the same effort at sharing. */
1674 if (t
->bt
== btStruct
||
1678 /* btSet (I think) implies that the name is a tag name, not a typedef
1679 name. This apparently is a MIPS extension for C sets. */
1684 /* Try to cross reference this type, build new type on failure. */
1685 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1686 if (tp
== (struct type
*) NULL
)
1687 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1689 /* DEC c89 produces cross references to qualified aggregate types,
1690 dereference them. */
1691 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1692 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1693 tp
= TYPE_TARGET_TYPE (tp
);
1695 /* Make sure that TYPE_CODE(tp) has an expected type code.
1696 Any type may be returned from cross_ref if file indirect entries
1698 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1699 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1700 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1702 unexpected_type_code_complaint (sym_name
);
1706 /* Usually, TYPE_CODE(tp) is already type_code. The main
1707 exception is if we guessed wrong re struct/union/enum.
1708 But for struct vs. union a wrong guess is harmless, so
1709 don't complain(). */
1710 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1711 && type_code
!= TYPE_CODE_ENUM
)
1712 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1713 && type_code
== TYPE_CODE_ENUM
))
1715 bad_tag_guess_complaint (sym_name
);
1718 if (TYPE_CODE (tp
) != type_code
)
1720 TYPE_CODE (tp
) = type_code
;
1723 /* Do not set the tag name if it is a compiler generated tag name
1724 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1725 if (name
[0] == '.' || name
[0] == '\0')
1726 TYPE_TAG_NAME (tp
) = NULL
;
1727 else if (TYPE_TAG_NAME (tp
) == NULL
1728 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1731 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1732 name
, strlen (name
)));
1736 /* All these types really point to some (common) MIPS type
1737 definition, and only the type-qualifiers fully identify
1738 them. We'll make the same effort at sharing.
1739 FIXME: We are not doing any guessing on range types. */
1740 if (t
->bt
== btRange
)
1744 /* Try to cross reference this type, build new type on failure. */
1745 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1746 if (tp
== (struct type
*) NULL
)
1747 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1749 /* Make sure that TYPE_CODE(tp) has an expected type code.
1750 Any type may be returned from cross_ref if file indirect entries
1752 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1754 unexpected_type_code_complaint (sym_name
);
1758 /* Usually, TYPE_CODE(tp) is already type_code. The main
1759 exception is if we guessed wrong re struct/union/enum. */
1760 if (TYPE_CODE (tp
) != type_code
)
1762 bad_tag_guess_complaint (sym_name
);
1763 TYPE_CODE (tp
) = type_code
;
1765 if (TYPE_NAME (tp
) == NULL
1766 || strcmp (TYPE_NAME (tp
), name
) != 0)
1769 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1770 name
, strlen (name
)));
1773 if (t
->bt
== btTypedef
)
1777 /* Try to cross reference this type, it should succeed. */
1778 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1779 if (tp
== (struct type
*) NULL
)
1781 complaint (&symfile_complaints
,
1782 _("unable to cross ref btTypedef for %s"), sym_name
);
1783 tp
= basic_type (btInt
, mdebugread_objfile
);
1787 /* Deal with range types. */
1788 if (t
->bt
== btRange
)
1790 TYPE_NFIELDS (tp
) = 0;
1791 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1792 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1793 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1795 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1799 /* Parse all the type qualifiers now. If there are more
1800 than 6 the game will continue in the next aux. */
1804 #define PARSE_TQ(tq) \
1805 if (t->tq != tqNil) \
1806 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1818 /* mips cc 2.x and gcc never put out continued aux entries. */
1822 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1826 /* Complain for illegal continuations due to corrupt aux entries. */
1828 complaint (&symfile_complaints
,
1829 _("illegal TIR continued for %s"), sym_name
);
1834 /* Make up a complex type from a basic one. Type is passed by
1835 reference in TPP and side-effected as necessary. The type
1836 qualifier TQ says how to handle the aux symbols at AX for
1837 the symbol SX we are currently analyzing. BIGEND says whether
1838 aux symbols are big-endian or little-endian.
1839 Returns the number of aux symbols we parsed. */
1842 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1848 /* Used in array processing. */
1859 t
= lookup_pointer_type (*tpp
);
1864 t
= lookup_function_type (*tpp
);
1871 /* Determine and record the domain type (type of index). */
1872 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1878 rf
= AUX_GET_ISYM (bigend
, ax
);
1881 fh
= get_rfd (fd
, rf
);
1883 indx
= parse_type (fh
- debug_info
->fdr
,
1884 debug_info
->external_aux
+ fh
->iauxBase
,
1885 id
, (int *) NULL
, bigend
, sym_name
);
1887 /* The bounds type should be an integer type, but might be anything
1888 else due to corrupt aux entries. */
1889 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1891 complaint (&symfile_complaints
,
1892 _("illegal array index type for %s, assuming int"),
1894 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1897 /* Get the bounds, and create the array type. */
1899 lower
= AUX_GET_DNLOW (bigend
, ax
);
1901 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1903 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1905 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1908 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1910 /* We used to fill in the supplied array element bitsize
1911 here if the TYPE_LENGTH of the target type was zero.
1912 This happens for a `pointer to an array of anonymous structs',
1913 but in this case the array element bitsize is also zero,
1914 so nothing is gained.
1915 And we used to check the TYPE_LENGTH of the target type against
1916 the supplied array element bitsize.
1917 gcc causes a mismatch for `pointer to array of object',
1918 since the sdb directives it uses do not have a way of
1919 specifying the bitsize, but it does no harm (the
1920 TYPE_LENGTH should be correct) and we should be able to
1921 ignore the erroneous bitsize from the auxiliary entry safely.
1922 dbx seems to ignore it too. */
1924 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1925 if (TYPE_LENGTH (*tpp
) == 0)
1926 TYPE_TARGET_STUB (t
) = 1;
1932 /* Volatile -- currently ignored */
1936 /* Const -- currently ignored */
1940 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1946 /* Parse a procedure descriptor record PR. Note that the procedure is
1947 parsed _after_ the local symbols, now we just insert the extra
1948 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1949 already been placed in the procedure's main block. Note also that
1950 images that have been partially stripped (ld -x) have been deprived
1951 of local symbols, and we have to cope with them here. FIRST_OFF is
1952 the offset of the first procedure for this FDR; we adjust the
1953 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1954 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1955 in question, or NULL to use top_stack->cur_block. */
1958 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1959 struct partial_symtab
*pst
)
1961 struct symbol
*s
, *i
;
1962 const struct block
*b
;
1965 /* Simple rule to find files linked "-x". */
1966 if (cur_fdr
->rss
== -1)
1970 /* Static procedure at address pr->adr. Sigh. */
1971 /* FIXME-32x64. assuming pr->adr fits in long. */
1972 complaint (&symfile_complaints
,
1973 _("can't handle PDR for static proc at 0x%lx"),
1974 (unsigned long) pr
->adr
);
1982 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1983 ((char *) debug_info
->external_ext
1985 * debug_swap
->external_ext_size
)),
1987 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1995 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1996 ((char *) debug_info
->external_sym
1997 + ((cur_fdr
->isymBase
+ pr
->isym
)
1998 * debug_swap
->external_sym_size
)),
2000 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
2003 if (search_symtab
!= NULL
)
2006 /* This loses both in the case mentioned (want a static, find a global),
2007 but also if we are looking up a non-mangled name which happens to
2008 match the name of a mangled function. */
2009 /* We have to save the cur_fdr across the call to lookup_symbol.
2010 If the pdr is for a static function and if a global function with
2011 the same name exists, lookup_symbol will eventually read in the symtab
2012 for the global function and clobber cur_fdr. */
2013 FDR
*save_cur_fdr
= cur_fdr
;
2015 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
2016 cur_fdr
= save_cur_fdr
;
2020 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
2027 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
2028 VAR_DOMAIN
, LOC_BLOCK
);
2032 b
= SYMBOL_BLOCK_VALUE (s
);
2036 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2040 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2041 s
= new_symbol (sh_name
);
2042 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2043 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2044 /* Donno its type, hope int is ok. */
2046 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2047 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2048 /* Won't have symbols for this one. */
2050 SYMBOL_BLOCK_VALUE (s
) = b
;
2051 BLOCK_FUNCTION (b
) = s
;
2052 BLOCK_START (b
) = pr
->adr
;
2053 /* BOUND used to be the end of procedure's text, but the
2054 argument is no longer passed in. */
2055 BLOCK_END (b
) = bound
;
2056 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2057 add_block (b
, top_stack
->cur_st
);
2061 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2065 struct mdebug_extra_func_info
*e
;
2067 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2070 /* GDB expects the absolute function start address for the
2071 procedure descriptor in e->pdr.adr.
2072 As the address in the procedure descriptor is usually relative,
2073 we would have to relocate e->pdr.adr with cur_fdr->adr and
2074 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2075 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2076 in shared libraries on some systems, and on other systems
2077 e->pdr.adr is sometimes offset by a bogus value.
2078 To work around these problems, we replace e->pdr.adr with
2079 the start address of the function. */
2080 e
->pdr
.adr
= BLOCK_START (b
);
2083 /* It would be reasonable that functions that have been compiled
2084 without debugging info have a btNil type for their return value,
2085 and functions that are void and are compiled with debugging info
2087 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2088 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2090 The glevel field in cur_fdr could be used to determine the presence
2091 of debugging info, but GCC doesn't always pass the -g switch settings
2092 to the assembler and GAS doesn't set the glevel field from the -g switch
2094 To work around these problems, the return value type of a TYPE_CODE_VOID
2095 function is adjusted accordingly if no debugging info was found in the
2096 compilation unit. */
2098 if (processing_gcc_compilation
== 0
2099 && found_ecoff_debugging_info
== 0
2100 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2101 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2104 /* Parse the external symbol ES. Just call parse_symbol() after
2105 making sure we know where the aux are for it.
2106 BIGEND says whether aux entries are big-endian or little-endian.
2108 This routine clobbers top_stack->cur_block and ->cur_st. */
2110 static void parse_external (EXTR
*, int, struct section_offsets
*,
2114 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2115 struct objfile
*objfile
)
2119 if (es
->ifd
!= ifdNil
)
2122 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2123 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2127 cur_fdr
= debug_info
->fdr
;
2131 /* Reading .o files */
2132 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2135 switch (es
->asym
.st
)
2138 /* These are generated for static symbols in .o files,
2159 /* FIXME: Turn this into a complaint? */
2161 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2162 what
, debug_info
->ssext
+ es
->asym
.iss
,
2163 fdr_name (cur_fdr
));
2167 switch (es
->asym
.st
)
2171 /* There is no need to parse the external procedure symbols.
2172 If they are from objects compiled without -g, their index will
2173 be indexNil, and the symbol definition from the minimal symbol
2174 is preferrable (yielding a function returning int instead of int).
2175 If the index points to a local procedure symbol, the local
2176 symbol already provides the correct type.
2177 Note that the index of the external procedure symbol points
2178 to the local procedure symbol in the local symbol table, and
2179 _not_ to the auxiliary symbol info. */
2183 /* Global common symbols are resolved by the runtime loader,
2185 if (SC_IS_COMMON (es
->asym
.sc
))
2188 /* Note that the case of a symbol with indexNil must be handled
2189 anyways by parse_symbol(). */
2190 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2191 bigend
, section_offsets
, objfile
);
2198 /* Parse the line number info for file descriptor FH into
2199 GDB's linetable LT. MIPS' encoding requires a little bit
2200 of magic to get things out. Note also that MIPS' line
2201 numbers can go back and forth, apparently we can live
2202 with that and do not need to reorder our linetables. */
2204 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2205 struct partial_symtab
*, CORE_ADDR
);
2208 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2209 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2211 unsigned char *base
;
2213 int delta
, count
, lineno
= 0;
2215 if (fh
->cbLine
== 0)
2218 /* Scan by procedure descriptors. */
2220 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2224 unsigned char *halt
;
2226 /* No code for this one. */
2227 if (pr
->iline
== ilineNil
||
2228 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2231 /* Determine start and end address of compressed line bytes for
2233 base
= debug_info
->line
+ fh
->cbLineOffset
;
2234 if (j
!= (fh
->cpd
- 1))
2235 halt
= base
+ pr
[1].cbLineOffset
;
2237 halt
= base
+ fh
->cbLine
;
2238 base
+= pr
->cbLineOffset
;
2240 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2242 l
= adr
>> 2; /* in words */
2243 for (lineno
= pr
->lnLow
; base
< halt
;)
2245 count
= *base
& 0x0f;
2246 delta
= *base
++ >> 4;
2251 delta
= (base
[0] << 8) | base
[1];
2252 if (delta
>= 0x8000)
2256 lineno
+= delta
; /* first delta is 0 */
2258 /* Complain if the line table overflows. Could happen
2259 with corrupt binaries. */
2260 if (lt
->nitems
>= maxlines
)
2262 complaint (&symfile_complaints
,
2263 _("guessed size of linetable for %s incorrectly"),
2267 k
= add_line (lt
, lineno
, l
, k
);
2274 function_outside_compilation_unit_complaint (const char *arg1
)
2276 complaint (&symfile_complaints
,
2277 _("function `%s' appears to be defined "
2278 "outside of all compilation units"),
2282 /* Use the STORAGE_CLASS to compute which section the given symbol
2283 belongs to, and then records this new minimal symbol. */
2286 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2287 enum minimal_symbol_type ms_type
, int storage_class
,
2288 struct objfile
*objfile
)
2292 switch (storage_class
)
2295 section
= SECT_OFF_TEXT (objfile
);
2298 section
= SECT_OFF_DATA (objfile
);
2301 section
= SECT_OFF_BSS (objfile
);
2304 section
= get_section_index (objfile
, ".sdata");
2307 section
= get_section_index (objfile
, ".sbss");
2310 section
= get_section_index (objfile
, ".rdata");
2313 section
= get_section_index (objfile
, ".init");
2316 section
= get_section_index (objfile
, ".xdata");
2319 section
= get_section_index (objfile
, ".pdata");
2322 section
= get_section_index (objfile
, ".fini");
2325 section
= get_section_index (objfile
, ".rconst");
2329 section
= get_section_index (objfile
, ".tlsdata");
2334 section
= get_section_index (objfile
, ".tlsbss");
2338 /* This kind of symbol is not associated to a section. */
2342 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2346 /* Master parsing procedure for first-pass reading of file symbols
2347 into a partial_symtab. */
2350 parse_partial_symbols (struct objfile
*objfile
)
2352 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2353 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2354 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2355 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2356 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2357 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2358 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2360 HDRR
*hdr
= &debug_info
->symbolic_header
;
2361 /* Running pointers */
2369 struct partial_symtab
*pst
;
2370 int textlow_not_set
= 1;
2372 /* List of current psymtab's include files. */
2373 const char **psymtab_include_list
;
2374 int includes_allocated
;
2377 struct pst_map
*fdr_to_pst
;
2378 /* Index within current psymtab dependency list. */
2379 struct partial_symtab
**dependency_list
;
2380 int dependencies_used
, dependencies_allocated
;
2381 struct cleanup
*old_chain
;
2383 enum language prev_language
;
2384 asection
*text_sect
;
2385 int relocatable
= 0;
2387 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2388 the shared libraries are prelinked at a high memory address.
2389 We have to adjust the start address of the object file for this case,
2390 by setting it to the start address of the first procedure in the file.
2391 But we should do no adjustments if we are debugging a .o file, where
2392 the text section (and fh->adr) really starts at zero. */
2393 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2394 if (text_sect
!= NULL
2395 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2398 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2399 sizeof (EXTR
) * hdr
->iextMax
);
2401 includes_allocated
= 30;
2403 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2404 sizeof (const char *));
2405 next_symbol_text_func
= mdebug_next_symbol_text
;
2407 dependencies_allocated
= 30;
2408 dependencies_used
= 0;
2410 (struct partial_symtab
**) alloca (dependencies_allocated
*
2411 sizeof (struct partial_symtab
*));
2413 set_last_source_file (NULL
);
2418 * Only parse the Local and External symbols, and the Relative FDR.
2419 * Fixup enough of the loader symtab to be able to use it.
2420 * Allocate space only for the file's portions we need to
2425 max_glevel
= MIN_GLEVEL
;
2427 /* Allocate the map FDR -> PST.
2428 Minor hack: -O3 images might claim some global data belongs
2429 to FDR -1. We`ll go along with that. */
2430 fdr_to_pst
= XCNEWVEC (struct pst_map
, hdr
->ifdMax
+ 1);
2431 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2434 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2436 fdr_to_pst
[-1].pst
= pst
;
2440 /* Allocate the global pending list. */
2442 ((struct mdebug_pending
**)
2443 obstack_alloc (&objfile
->objfile_obstack
,
2444 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2445 memset (pending_list
, 0,
2446 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2448 /* Pass 0 over external syms: swap them in. */
2449 ext_block
= XNEWVEC (EXTR
, hdr
->iextMax
);
2450 make_cleanup (xfree
, ext_block
);
2452 ext_out
= (char *) debug_info
->external_ext
;
2453 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2455 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2456 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2458 /* Pass 1 over external syms: Presize and partition the list. */
2460 ext_in_end
= ext_in
+ hdr
->iextMax
;
2461 for (; ext_in
< ext_in_end
; ext_in
++)
2463 /* See calls to complain below. */
2464 if (ext_in
->ifd
>= -1
2465 && ext_in
->ifd
< hdr
->ifdMax
2466 && ext_in
->asym
.iss
>= 0
2467 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2468 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2471 /* Pass 1.5 over files: partition out global symbol space. */
2473 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2475 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2476 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2477 fdr_to_pst
[f_idx
].n_globals
= 0;
2482 For ECOFF in ELF, we skip the creation of the minimal symbols.
2483 The ECOFF symbols should be a subset of the Elf symbols, and the
2484 section information of the elf symbols will be more accurate.
2485 FIXME! What about Irix 5's native linker?
2487 By default, Elf sections which don't exist in ECOFF
2488 get put in ECOFF's absolute section by the gnu linker.
2489 Since absolute sections don't get relocated, we
2490 end up calculating an address different from that of
2491 the symbol's minimal symbol (created earlier from the
2494 To fix this, either :
2495 1) don't create the duplicate symbol
2496 (assumes ECOFF symtab is a subset of the ELF symtab;
2497 assumes no side-effects result from ignoring ECOFF symbol)
2498 2) create it, only if lookup for existing symbol in ELF's minimal
2501 assumes no side-effects result from ignoring ECOFF symbol)
2502 3) create it, but lookup ELF's minimal symbol and use it's section
2503 during relocation, then modify "uniqify" phase to merge and
2504 eliminate the duplicate symbol
2505 (highly inefficient)
2507 I've implemented #1 here...
2508 Skip the creation of the minimal symbols based on the ECOFF
2511 /* Pass 2 over external syms: fill in external symbols. */
2513 ext_in_end
= ext_in
+ hdr
->iextMax
;
2514 for (; ext_in
< ext_in_end
; ext_in
++)
2516 enum minimal_symbol_type ms_type
= mst_text
;
2517 CORE_ADDR svalue
= ext_in
->asym
.value
;
2519 /* The Irix 5 native tools seem to sometimes generate bogus
2520 external symbols. */
2521 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2523 complaint (&symfile_complaints
,
2524 _("bad ifd for external symbol: %d (max %ld)"),
2525 ext_in
->ifd
, hdr
->ifdMax
);
2528 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2530 complaint (&symfile_complaints
,
2531 _("bad iss for external symbol: %ld (max %ld)"),
2532 ext_in
->asym
.iss
, hdr
->issExtMax
);
2536 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2537 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2540 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2544 /* Pass 3 over files, over local syms: fill in static symbols. */
2545 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2547 /* Process ECOFF Symbol Types and Storage Classes. */
2548 switch (ext_in
->asym
.st
)
2551 /* Beginnning of Procedure */
2554 /* Load time only static procs */
2555 ms_type
= mst_file_text
;
2558 /* External symbol */
2559 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2561 /* The value of a common symbol is its size, not its address.
2565 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2569 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2573 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2583 /* On certain platforms, some extra label symbols can be
2584 generated by the linker. One possible usage for this kind
2585 of symbols is to represent the address of the begining of a
2586 given section. For instance, on Tru64 5.1, the address of
2587 the _ftext label is the start address of the .text section.
2589 The storage class of these symbols is usually directly
2590 related to the section to which the symbol refers. For
2591 instance, on Tru64 5.1, the storage class for the _fdata
2592 label is scData, refering to the .data section.
2594 It is actually possible that the section associated to the
2595 storage class of the label does not exist. On True64 5.1
2596 for instance, the libm.so shared library does not contain
2597 any .data section, although it contains a _fpdata label
2598 which storage class is scData... Since these symbols are
2599 usually useless for the debugger user anyway, we just
2600 discard these symbols. */
2602 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2604 if (objfile
->sect_index_text
== -1)
2607 ms_type
= mst_file_text
;
2609 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2611 if (objfile
->sect_index_data
== -1)
2614 ms_type
= mst_file_data
;
2616 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2618 if (objfile
->sect_index_bss
== -1)
2621 ms_type
= mst_file_bss
;
2623 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2625 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2627 if (sbss_sect_index
== -1)
2630 ms_type
= mst_file_bss
;
2637 /* The alpha has the section start addresses in stLocal symbols
2638 whose name starts with a `.'. Skip those but complain for all
2639 other stLocal symbols.
2640 Irix6 puts the section start addresses in stNil symbols, skip
2646 ms_type
= mst_unknown
;
2647 unknown_ext_complaint (name
);
2649 if (!ECOFF_IN_ELF (cur_bfd
))
2650 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2654 /* Pass 3 over files, over local syms: fill in static symbols. */
2655 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2657 struct partial_symtab
*save_pst
;
2661 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2665 fdr_to_pst
[f_idx
].pst
= NULL
;
2669 /* Determine the start address for this object file from the
2670 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2674 if (relocatable
|| textlow
!= 0)
2675 textlow
+= ANOFFSET (objfile
->section_offsets
,
2676 SECT_OFF_TEXT (objfile
));
2680 pst
= start_psymtab_common (objfile
,
2683 objfile
->global_psymbols
.next
,
2684 objfile
->static_psymbols
.next
);
2685 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2686 sizeof (struct symloc
));
2687 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2690 FDR_IDX (pst
) = f_idx
;
2691 CUR_BFD (pst
) = cur_bfd
;
2692 DEBUG_SWAP (pst
) = debug_swap
;
2693 DEBUG_INFO (pst
) = debug_info
;
2694 PENDING_LIST (pst
) = pending_list
;
2696 /* The way to turn this into a symtab is to call... */
2697 pst
->read_symtab
= mdebug_read_symtab
;
2699 /* Set up language for the pst.
2700 The language from the FDR is used if it is unambigious (e.g. cfront
2701 with native cc and g++ will set the language to C).
2702 Otherwise we have to deduce the language from the filename.
2703 Native ecoff has every header file in a separate FDR, so
2704 deduce_language_from_filename will return language_unknown for
2705 a header file, which is not what we want.
2706 But the FDRs for the header files are after the FDR for the source
2707 file, so we can assign the language of the source file to the
2708 following header files. Then we save the language in the private
2709 pst data so that we can reuse it when building symtabs. */
2710 prev_language
= psymtab_language
;
2714 case langCplusplusV2
:
2715 psymtab_language
= language_cplus
;
2718 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2721 if (psymtab_language
== language_unknown
)
2722 psymtab_language
= prev_language
;
2723 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2725 pst
->texthigh
= pst
->textlow
;
2727 /* For stabs-in-ecoff files, the second symbol must be @stab.
2728 This symbol is emitted by mips-tfile to signal that the
2729 current object file uses encapsulated stabs instead of mips
2730 ecoff for local symbols. (It is the second symbol because
2731 the first symbol is the stFile used to signal the start of a
2733 processing_gcc_compilation
= 0;
2736 (*swap_sym_in
) (cur_bfd
,
2737 ((char *) debug_info
->external_sym
2738 + (fh
->isymBase
+ 1) * external_sym_size
),
2740 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2742 processing_gcc_compilation
= 2;
2745 if (processing_gcc_compilation
!= 0)
2747 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2750 const char *namestring
;
2752 (*swap_sym_in
) (cur_bfd
,
2753 (((char *) debug_info
->external_sym
)
2754 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2756 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2757 if (!ECOFF_IS_STAB (&sh
))
2759 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2764 if (sh
.st
== stStaticProc
)
2766 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2767 record_minimal_symbol (namestring
, sh
.value
,
2768 mst_file_text
, sh
.sc
,
2771 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2772 SECT_OFF_TEXT (objfile
));
2773 procaddr
= sh
.value
;
2775 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2776 (debug_info
->external_aux
2779 (*swap_sym_in
) (cur_bfd
,
2780 ((char *) debug_info
->external_sym
2781 + ((fh
->isymBase
+ isym
- 1)
2782 * external_sym_size
)),
2786 CORE_ADDR high
= procaddr
+ sh
.value
;
2788 /* Kludge for Irix 5.2 zero fh->adr. */
2790 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2791 pst
->textlow
= procaddr
;
2792 if (high
> pst
->texthigh
)
2793 pst
->texthigh
= high
;
2796 else if (sh
.st
== stStatic
)
2811 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2812 record_minimal_symbol (namestring
, sh
.value
,
2813 mst_file_data
, sh
.sc
,
2815 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2816 SECT_OFF_DATA (objfile
));
2820 /* FIXME! Shouldn't this use cases for bss,
2821 then have the default be abs? */
2822 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2823 record_minimal_symbol (namestring
, sh
.value
,
2824 mst_file_bss
, sh
.sc
,
2826 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2827 SECT_OFF_BSS (objfile
));
2833 /* Handle stabs continuation. */
2835 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2836 int len
= strlen (stabstring
);
2838 while (stabstring
[len
- 1] == '\\')
2841 char *stabstring1
= stabstring
;
2845 /* Ignore continuation char from 1st string. */
2848 /* Read next stabstring. */
2850 (*swap_sym_in
) (cur_bfd
,
2851 (((char *) debug_info
->external_sym
)
2852 + (fh
->isymBase
+ cur_sdx
)
2853 * external_sym_size
),
2855 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2856 len2
= strlen (stabstring2
);
2858 /* Concatinate stabstring2 with stabstring1. */
2860 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2862 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2865 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2866 strcpy (stabstring
, stabstring1
);
2868 strcpy (stabstring
+ len
, stabstring2
);
2876 /* Standard, external, non-debugger, symbols. */
2878 case N_TEXT
| N_EXT
:
2879 case N_NBTEXT
| N_EXT
:
2880 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2881 SECT_OFF_TEXT (objfile
));
2884 case N_DATA
| N_EXT
:
2885 case N_NBDATA
| N_EXT
:
2886 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2887 SECT_OFF_DATA (objfile
));
2892 case N_NBBSS
| N_EXT
:
2893 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2894 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2895 SECT_OFF_BSS (objfile
));
2902 /* Standard, local, non-debugger, symbols. */
2906 /* We need to be able to deal with both N_FN or
2907 N_TEXT, because we have no way of knowing
2908 whether the sys-supplied ld or GNU ld was used
2909 to make the executable. Sequents throw in
2910 another wrinkle -- they renumbered N_FN. */
2918 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2919 SECT_OFF_DATA (objfile
));
2922 case N_UNDF
| N_EXT
:
2923 continue; /* Just undefined, not COMMON. */
2928 /* Lots of symbol types we can just ignore. */
2935 /* Keep going . . . */
2938 * Special symbol types for GNU
2941 case N_INDR
| N_EXT
:
2943 case N_SETA
| N_EXT
:
2945 case N_SETT
| N_EXT
:
2947 case N_SETD
| N_EXT
:
2949 case N_SETB
| N_EXT
:
2959 static int prev_so_symnum
= -10;
2962 /* A zero value is probably an indication for the
2963 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2964 for zero, so don't relocate it. */
2967 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2968 textlow_not_set
= 1;
2970 textlow_not_set
= 0;
2972 if (prev_so_symnum
!= symnum
- 1)
2973 { /* Here if prev stab wasn't N_SO. */
2976 pst
= (struct partial_symtab
*) 0;
2978 dependencies_used
= 0;
2982 prev_so_symnum
= symnum
;
2984 /* End the current partial symtab and start a
2987 /* SET_NAMESTRING ();*/
2988 namestring
= stabstring
;
2990 /* Null name means end of .o file. Don't start a new
2992 if (*namestring
== '\000')
2995 /* Some compilers (including gcc) emit a pair of
2996 initial N_SOs. The first one is a directory name;
2997 the second the file name. If pst exists, is
2998 empty, and has a filename ending in '/', we assume
2999 the previous N_SO was a directory name. */
3000 p
= lbasename (namestring
);
3001 if (p
!= namestring
&& *p
== '\000')
3002 continue; /* Simply ignore directory
3005 /* Some other compilers (C++ ones in particular) emit
3006 useless SOs for non-existant .c files. We ignore
3007 all subsequent SOs that immediately follow the
3020 enum language tmp_language
;
3022 /* Mark down an include file in the current psymtab. */
3024 /* SET_NAMESTRING (); */
3025 namestring
= stabstring
;
3028 = deduce_language_from_filename (namestring
);
3030 /* Only change the psymtab's language if we've
3031 learned something useful (eg. tmp_language is not
3032 language_unknown). In addition, to match what
3033 start_subfile does, never change from C++ to
3035 if (tmp_language
!= language_unknown
3036 && (tmp_language
!= language_c
3037 || psymtab_language
!= language_cplus
))
3038 psymtab_language
= tmp_language
;
3040 /* In C++, one may expect the same filename to come
3041 round many times, when code is coming alternately
3042 from the main file and from inline functions in
3043 other files. So I check to see if this is a file
3044 we've seen before -- either the main source file,
3045 or a previously included file.
3047 This seems to be a lot of time to be spending on
3048 N_SOL, but things like "break c-exp.y:435" need to
3049 work (I suppose the psymtab_include_list could be
3050 hashed or put in a binary tree, if profiling shows
3051 this is a major hog). */
3052 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3058 for (i
= 0; i
< includes_used
; i
++)
3059 if (filename_cmp (namestring
,
3060 psymtab_include_list
[i
]) == 0)
3069 psymtab_include_list
[includes_used
++] = namestring
;
3070 if (includes_used
>= includes_allocated
)
3072 const char **orig
= psymtab_include_list
;
3074 psymtab_include_list
= (const char **)
3075 alloca ((includes_allocated
*= 2) *
3076 sizeof (const char *));
3077 memcpy (psymtab_include_list
, orig
,
3078 includes_used
* sizeof (const char *));
3082 case N_LSYM
: /* Typedef or automatic variable. */
3083 case N_STSYM
: /* Data seg var -- static */
3084 case N_LCSYM
: /* BSS " */
3085 case N_ROSYM
: /* Read-only data seg var -- static. */
3086 case N_NBSTS
: /* Gould nobase. */
3087 case N_NBLCS
: /* symbols. */
3089 case N_GSYM
: /* Global (extern) variable; can be
3090 data or bss (sigh FIXME). */
3092 /* Following may probably be ignored; I'll leave them here
3093 for now (until I do Pascal and Modula 2 extensions). */
3095 case N_PC
: /* I may or may not need this; I
3097 case N_M2C
: /* I suspect that I can ignore this
3099 case N_SCOPE
: /* Same. */
3101 /* SET_NAMESTRING (); */
3102 namestring
= stabstring
;
3103 p
= (char *) strchr (namestring
, ':');
3105 continue; /* Not a debugging symbol. */
3109 /* Main processing section for debugging symbols which
3110 the initial read through the symbol tables needs to
3111 worry about. If we reach this point, the symbol
3112 which we are considering is definitely one we are
3113 interested in. p must also contain the (valid)
3114 index into the namestring which indicates the
3115 debugging type symbol. */
3120 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3121 SECT_OFF_DATA (objfile
));
3123 if (gdbarch_static_transform_name_p (gdbarch
))
3124 namestring
= gdbarch_static_transform_name
3125 (gdbarch
, namestring
);
3127 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3128 VAR_DOMAIN
, LOC_STATIC
,
3129 &objfile
->static_psymbols
,
3131 psymtab_language
, objfile
);
3134 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3135 SECT_OFF_DATA (objfile
));
3136 /* The addresses in these entries are reported
3137 to be wrong. See the code that reads 'G's
3139 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3140 VAR_DOMAIN
, LOC_STATIC
,
3141 &objfile
->global_psymbols
,
3143 psymtab_language
, objfile
);
3147 /* When a 'T' entry is defining an anonymous enum, it
3148 may have a name which is the empty string, or a
3149 single space. Since they're not really defining a
3150 symbol, those shouldn't go in the partial symbol
3151 table. We do pick up the elements of such enums at
3152 'check_enum:', below. */
3153 if (p
>= namestring
+ 2
3154 || (p
== namestring
+ 1
3155 && namestring
[0] != ' '))
3157 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3158 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3159 &objfile
->static_psymbols
,
3160 0, psymtab_language
, objfile
);
3163 /* Also a typedef with the same name. */
3164 add_psymbol_to_list (namestring
,
3166 VAR_DOMAIN
, LOC_TYPEDEF
,
3167 &objfile
->static_psymbols
,
3168 0, psymtab_language
,
3175 if (p
!= namestring
) /* a name is there, not
3178 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3179 VAR_DOMAIN
, LOC_TYPEDEF
,
3180 &objfile
->static_psymbols
,
3181 0, psymtab_language
, objfile
);
3184 /* If this is an enumerated type, we need to add
3185 all the enum constants to the partial symbol
3186 table. This does not cover enums without names,
3187 e.g. "enum {a, b} c;" in C, but fortunately
3188 those are rare. There is no way for GDB to find
3189 those from the enum type without spending too
3190 much time on it. Thus to solve this problem,
3191 the compiler needs to put out the enum in a
3192 nameless type. GCC2 does this. */
3194 /* We are looking for something of the form
3195 <name> ":" ("t" | "T") [<number> "="] "e"
3196 {<constant> ":" <value> ","} ";". */
3198 /* Skip over the colon and the 't' or 'T'. */
3200 /* This type may be given a number. Also, numbers
3201 can come in pairs like (0,26). Skip over it. */
3202 while ((*p
>= '0' && *p
<= '9')
3203 || *p
== '(' || *p
== ',' || *p
== ')'
3209 /* The aix4 compiler emits extra crud before
3213 /* Skip over the type (?). */
3217 /* Skip over the colon. */
3221 /* We have found an enumerated type. */
3222 /* According to comments in read_enum_type
3223 a comma could end it instead of a semicolon.
3224 I don't know where that happens.
3226 while (*p
&& *p
!= ';' && *p
!= ',')
3230 /* Check for and handle cretinous dbx
3231 symbol name continuation! */
3232 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3233 p
= next_symbol_text (objfile
);
3235 /* Point to the character after the name
3236 of the enum constant. */
3237 for (q
= p
; *q
&& *q
!= ':'; q
++)
3239 /* Note that the value doesn't matter for
3240 enum constants in psymtabs, just in
3242 add_psymbol_to_list (p
, q
- p
, 1,
3243 VAR_DOMAIN
, LOC_CONST
,
3244 &objfile
->static_psymbols
,
3245 0, psymtab_language
,
3247 /* Point past the name. */
3249 /* Skip over the value. */
3250 while (*p
&& *p
!= ',')
3252 /* Advance past the comma. */
3259 /* Constant, e.g. from "const" in Pascal. */
3260 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3261 VAR_DOMAIN
, LOC_CONST
,
3262 &objfile
->static_psymbols
,
3263 0, psymtab_language
, objfile
);
3269 int name_len
= p
- namestring
;
3270 char *name
= (char *) xmalloc (name_len
+ 1);
3272 memcpy (name
, namestring
, name_len
);
3273 name
[name_len
] = '\0';
3274 function_outside_compilation_unit_complaint (name
);
3277 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3278 SECT_OFF_TEXT (objfile
));
3279 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3280 VAR_DOMAIN
, LOC_BLOCK
,
3281 &objfile
->static_psymbols
,
3283 psymtab_language
, objfile
);
3286 /* Global functions were ignored here, but now they
3287 are put into the global psymtab like one would
3288 expect. They're also in the minimal symbol
3293 int name_len
= p
- namestring
;
3294 char *name
= (char *) xmalloc (name_len
+ 1);
3296 memcpy (name
, namestring
, name_len
);
3297 name
[name_len
] = '\0';
3298 function_outside_compilation_unit_complaint (name
);
3301 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3302 SECT_OFF_TEXT (objfile
));
3303 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3304 VAR_DOMAIN
, LOC_BLOCK
,
3305 &objfile
->global_psymbols
,
3307 psymtab_language
, objfile
);
3310 /* Two things show up here (hopefully); static
3311 symbols of local scope (static used inside
3312 braces) or extensions of structure symbols. We
3327 case '#': /* For symbol identification (used
3332 /* It is a C++ nested symbol. We don't need to
3333 record it (I don't think); if we try to look up
3334 foo::bar::baz, then symbols for the symtab
3335 containing foo should get read in, I think. */
3336 /* Someone says sun cc puts out symbols like
3337 /foo/baz/maclib::/usr/local/bin/maclib,
3338 which would get here with a symbol type of ':'. */
3342 /* Unexpected symbol descriptor. The second and
3343 subsequent stabs of a continued stab can show up
3344 here. The question is whether they ever can
3345 mimic a normal stab--it would be nice if not,
3346 since we certainly don't want to spend the time
3347 searching to the end of every string looking for
3350 complaint (&symfile_complaints
,
3351 _("unknown symbol descriptor `%c'"), p
[1]);
3353 /* Ignore it; perhaps it is an extension that we don't
3362 /* Solaris 2 end of module, finish current partial
3363 symbol table. dbx_end_psymtab will set
3364 pst->texthigh to the proper value, which is
3365 necessary if a module compiled without
3366 debugging info follows this module. */
3368 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3370 pst
= (struct partial_symtab
*) 0;
3372 dependencies_used
= 0;
3377 if (sh
.value
> save_pst
->texthigh
)
3378 save_pst
->texthigh
= sh
.value
;
3383 case N_SSYM
: /* Claim: Structure or union
3384 element. Hopefully, I can
3386 case N_ENTRY
: /* Alternate entry point; can
3388 case N_MAIN
: /* Can definitely ignore this. */
3389 case N_CATCH
: /* These are GNU C++ extensions. */
3390 case N_EHDECL
: /* that can safely be ignored here. */
3400 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3401 case N_DEFD
: /* GNU Modula-2 */
3402 case N_ALIAS
: /* SunPro F77: alias name, ignore
3405 case N_OBJ
: /* Useless types from Solaris. */
3407 /* These symbols aren't interesting; don't worry about
3413 /* If we haven't found it yet, ignore it. It's
3414 probably some new type we don't know about yet. */
3415 complaint (&symfile_complaints
,
3416 _("unknown symbol type %s"),
3417 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3421 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3424 /* end - Handle continuation */
3429 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3432 enum address_class theclass
;
3433 CORE_ADDR minsym_value
;
3435 (*swap_sym_in
) (cur_bfd
,
3436 ((char *) debug_info
->external_sym
3437 + ((fh
->isymBase
+ cur_sdx
)
3438 * external_sym_size
)),
3441 if (ECOFF_IS_STAB (&sh
))
3447 /* Non absolute static symbols go into the minimal table. */
3448 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3449 || (sh
.index
== indexNil
3450 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3452 /* FIXME, premature? */
3457 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3459 minsym_value
= sh
.value
;
3465 /* The value of a stEnd symbol is the displacement from the
3466 corresponding start symbol value, do not relocate it. */
3468 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3469 SECT_OFF_TEXT (objfile
));
3476 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3477 SECT_OFF_DATA (objfile
));
3481 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3482 SECT_OFF_BSS (objfile
));
3493 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3495 SECT_OFF_TEXT (objfile
),
3501 /* Ignore all parameter symbol records. */
3502 if (sh
.index
>= hdr
->iauxMax
)
3504 /* Should not happen, but does when cross-compiling
3505 with the MIPS compiler. FIXME -- pull later. */
3506 index_complaint (name
);
3507 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3510 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3511 (debug_info
->external_aux
3515 if (new_sdx
<= cur_sdx
)
3517 /* This should not happen either... FIXME. */
3518 complaint (&symfile_complaints
,
3519 _("bad proc end in aux found from symbol %s"),
3521 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3524 /* For stProc symbol records, we need to check the
3525 storage class as well, as only (stProc, scText)
3526 entries represent "real" procedures - See the
3527 Compaq document titled "Object File / Symbol Table
3528 Format Specification" for more information. If the
3529 storage class is not scText, we discard the whole
3530 block of symbol records for this stProc. */
3531 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3534 /* Usually there is a local and a global stProc symbol
3535 for a function. This means that the function name
3536 has already been entered into the mimimal symbol table
3537 while processing the global symbols in pass 2 above.
3538 One notable exception is the PROGRAM name from
3539 f77 compiled executables, it is only put out as
3540 local stProc symbol, and a global MAIN__ stProc symbol
3541 points to it. It doesn't matter though, as gdb is
3542 still able to find the PROGRAM name via the partial
3543 symbol table, and the MAIN__ symbol via the minimal
3545 if (sh
.st
== stProc
)
3546 add_psymbol_to_list (name
, strlen (name
), 1,
3547 VAR_DOMAIN
, LOC_BLOCK
,
3548 &objfile
->global_psymbols
,
3549 sh
.value
, psymtab_language
, objfile
);
3551 add_psymbol_to_list (name
, strlen (name
), 1,
3552 VAR_DOMAIN
, LOC_BLOCK
,
3553 &objfile
->static_psymbols
,
3554 sh
.value
, psymtab_language
, objfile
);
3556 procaddr
= sh
.value
;
3559 (*swap_sym_in
) (cur_bfd
,
3560 ((char *) debug_info
->external_sym
3561 + ((fh
->isymBase
+ cur_sdx
- 1)
3562 * external_sym_size
)),
3567 /* Kludge for Irix 5.2 zero fh->adr. */
3569 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3570 pst
->textlow
= procaddr
;
3572 high
= procaddr
+ sh
.value
;
3573 if (high
> pst
->texthigh
)
3574 pst
->texthigh
= high
;
3577 case stStatic
: /* Variable */
3578 if (SC_IS_DATA (sh
.sc
))
3579 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3581 SECT_OFF_DATA (objfile
),
3584 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3586 SECT_OFF_BSS (objfile
),
3588 theclass
= LOC_STATIC
;
3591 case stIndirect
: /* Irix5 forward declaration */
3592 /* Skip forward declarations from Irix5 cc. */
3595 case stTypedef
: /* Typedef */
3596 /* Skip typedefs for forward declarations and opaque
3597 structs from alpha and mips cc. */
3598 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3600 theclass
= LOC_TYPEDEF
;
3603 case stConstant
: /* Constant decl */
3604 theclass
= LOC_CONST
;
3610 case stBlock
: /* { }, str, un, enum */
3611 /* Do not create a partial symbol for cc unnamed aggregates
3612 and gcc empty aggregates. */
3613 if ((sh
.sc
== scInfo
3614 || SC_IS_COMMON (sh
.sc
))
3616 && sh
.index
!= cur_sdx
+ 2)
3618 add_psymbol_to_list (name
, strlen (name
), 1,
3619 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3620 &objfile
->static_psymbols
,
3621 0, psymtab_language
, objfile
);
3623 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3625 /* Skip over the block. */
3627 if (new_sdx
<= cur_sdx
)
3629 /* This happens with the Ultrix kernel. */
3630 complaint (&symfile_complaints
,
3631 _("bad aux index at block symbol %s"), name
);
3632 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3637 case stFile
: /* File headers */
3638 case stLabel
: /* Labels */
3639 case stEnd
: /* Ends of files */
3642 case stLocal
: /* Local variables */
3643 /* Normally these are skipped because we skip over
3644 all blocks we see. However, these can occur
3645 as visible symbols in a .h file that contains code. */
3649 /* Both complaints are valid: one gives symbol name,
3650 the other the offending symbol type. */
3651 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3653 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3657 /* Use this gdb symbol. */
3658 add_psymbol_to_list (name
, strlen (name
), 1,
3659 VAR_DOMAIN
, theclass
,
3660 &objfile
->static_psymbols
,
3661 sh
.value
, psymtab_language
, objfile
);
3663 cur_sdx
++; /* Go to next file symbol. */
3666 /* Now do enter the external symbols. */
3667 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3668 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3669 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3670 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3671 for (; --cur_sdx
>= 0; ext_ptr
++)
3673 enum address_class theclass
;
3678 if (ext_ptr
->ifd
!= f_idx
)
3679 internal_error (__FILE__
, __LINE__
,
3680 _("failed internal consistency check"));
3681 psh
= &ext_ptr
->asym
;
3683 /* Do not add undefined symbols to the partial symbol table. */
3684 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3687 svalue
= psh
->value
;
3692 svalue
+= ANOFFSET (objfile
->section_offsets
,
3693 SECT_OFF_TEXT (objfile
));
3700 svalue
+= ANOFFSET (objfile
->section_offsets
,
3701 SECT_OFF_DATA (objfile
));
3705 svalue
+= ANOFFSET (objfile
->section_offsets
,
3706 SECT_OFF_BSS (objfile
));
3713 /* These are generated for static symbols in .o files,
3718 /* External procedure symbols have been entered
3719 into the minimal symbol table in pass 2 above.
3720 Ignore them, as parse_external will ignore them too. */
3723 theclass
= LOC_LABEL
;
3726 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3727 /* Fall through, pretend it's global. */
3729 /* Global common symbols are resolved by the runtime loader,
3731 if (SC_IS_COMMON (psh
->sc
))
3734 theclass
= LOC_STATIC
;
3737 name
= debug_info
->ssext
+ psh
->iss
;
3738 add_psymbol_to_list (name
, strlen (name
), 1,
3739 VAR_DOMAIN
, theclass
,
3740 &objfile
->global_psymbols
,
3741 svalue
, psymtab_language
, objfile
);
3745 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3746 empty and put on the free list. */
3747 fdr_to_pst
[f_idx
].pst
3748 = dbx_end_psymtab (objfile
, save_pst
,
3749 psymtab_include_list
, includes_used
,
3750 -1, save_pst
->texthigh
,
3751 dependency_list
, dependencies_used
,
3754 dependencies_used
= 0;
3756 /* The objfile has its functions reordered if this partial symbol
3757 table overlaps any other partial symbol table.
3758 We cannot assume a reordered objfile if a partial symbol table
3759 is contained within another partial symbol table, as partial symbol
3760 tables for include files with executable code are contained
3761 within the partial symbol table for the including source file,
3762 and we do not want to flag the objfile reordered for these cases.
3764 This strategy works well for Irix-5.2 shared libraries, but we
3765 might have to use a more elaborate (and slower) algorithm for
3767 save_pst
= fdr_to_pst
[f_idx
].pst
;
3768 if (save_pst
!= NULL
3769 && save_pst
->textlow
!= 0
3770 && !(objfile
->flags
& OBJF_REORDERED
))
3772 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3775 && save_pst
->textlow
>= pst
->textlow
3776 && save_pst
->textlow
< pst
->texthigh
3777 && save_pst
->texthigh
> pst
->texthigh
)
3779 objfile
->flags
|= OBJF_REORDERED
;
3786 /* Now scan the FDRs for dependencies. */
3787 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3789 fh
= f_idx
+ debug_info
->fdr
;
3790 pst
= fdr_to_pst
[f_idx
].pst
;
3792 if (pst
== (struct partial_symtab
*) NULL
)
3795 /* This should catch stabs-in-ecoff. */
3799 /* Skip the first file indirect entry as it is a self dependency for
3800 source files or a reverse .h -> .c dependency for header files. */
3801 pst
->number_of_dependencies
= 0;
3803 ((struct partial_symtab
**)
3804 obstack_alloc (&objfile
->objfile_obstack
,
3806 * sizeof (struct partial_symtab
*))));
3807 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3811 (*swap_rfd_in
) (cur_bfd
,
3812 ((char *) debug_info
->external_rfd
3813 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3815 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3817 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3821 /* Skip self dependencies of header files. */
3825 /* Do not add to dependeny list if psymtab was empty. */
3826 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3828 pst
->dependencies
[pst
->number_of_dependencies
++]
3829 = fdr_to_pst
[rh
].pst
;
3833 /* Remove the dummy psymtab created for -O3 images above, if it is
3834 still empty, to enable the detection of stripped executables. */
3835 if (objfile
->psymtabs
->next
== NULL
3836 && objfile
->psymtabs
->number_of_dependencies
== 0
3837 && objfile
->psymtabs
->n_global_syms
== 0
3838 && objfile
->psymtabs
->n_static_syms
== 0)
3839 objfile
->psymtabs
= NULL
;
3840 do_cleanups (old_chain
);
3843 /* If the current psymbol has an enumerated type, we need to add
3844 all the enum constants to the partial symbol table. */
3847 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3850 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3851 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3852 char *ext_sym
= ((char *) debug_info
->external_sym
3853 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3863 /* It is an enumerated type if the next symbol entry is a stMember
3864 and its auxiliary index is indexNil or its auxiliary entry
3865 is a plain btNil or btVoid.
3866 Alpha cc -migrate enums are recognized by a zero index and
3867 a zero symbol value.
3868 DU 4.0 cc enums are recognized by a member type of btEnum without
3869 qualifiers and a zero symbol value. */
3870 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3871 if (sh
.st
!= stMember
)
3874 if (sh
.index
== indexNil
3875 || (sh
.index
== 0 && svalue
== 0))
3877 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3878 &(debug_info
->external_aux
3879 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3881 if ((tir
.bt
!= btNil
3883 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3884 || tir
.tq0
!= tqNil
)
3896 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3897 if (sh
.st
!= stMember
)
3899 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3901 /* Note that the value doesn't matter for enum constants
3902 in psymtabs, just in symtabs. */
3903 add_psymbol_to_list (name
, strlen (name
), 1,
3904 VAR_DOMAIN
, LOC_CONST
,
3905 &objfile
->static_psymbols
,
3906 0, psymtab_language
, objfile
);
3907 ext_sym
+= external_sym_size
;
3911 /* Get the next symbol. OBJFILE is unused. */
3914 mdebug_next_symbol_text (struct objfile
*objfile
)
3919 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3920 ((char *) debug_info
->external_sym
3921 + ((cur_fdr
->isymBase
+ cur_sdx
)
3922 * debug_swap
->external_sym_size
)),
3924 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3927 /* Ancillary function to psymtab_to_symtab(). Does all the work
3928 for turning the partial symtab PST into a symtab, recurring
3929 first on all dependent psymtabs. The argument FILENAME is
3930 only passed so we can see in debug stack traces what file
3933 This function has a split personality, based on whether the
3934 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3935 The flow of control and even the memory allocation differs. FIXME. */
3938 psymtab_to_symtab_1 (struct objfile
*objfile
,
3939 struct partial_symtab
*pst
, const char *filename
)
3941 bfd_size_type external_sym_size
;
3942 bfd_size_type external_pdr_size
;
3943 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3944 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3946 struct compunit_symtab
*cust
= NULL
;
3948 struct linetable
*lines
;
3949 CORE_ADDR lowest_pdr_addr
= 0;
3950 int last_symtab_ended
= 0;
3951 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3957 /* Read in all partial symbtabs on which this one is dependent.
3958 NOTE that we do have circular dependencies, sigh. We solved
3959 that by setting pst->readin before this point. */
3961 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3962 if (!pst
->dependencies
[i
]->readin
)
3964 /* Inform about additional files to be read in. */
3967 fputs_filtered (" ", gdb_stdout
);
3969 fputs_filtered ("and ", gdb_stdout
);
3971 printf_filtered ("%s...",
3972 pst
->dependencies
[i
]->filename
);
3973 wrap_here (""); /* Flush output */
3974 gdb_flush (gdb_stdout
);
3976 /* We only pass the filename for debug purposes. */
3977 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3978 pst
->dependencies
[i
]->filename
);
3981 /* Do nothing if this is a dummy psymtab. */
3983 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3984 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3987 /* Now read the symbols for this symtab. */
3989 cur_bfd
= CUR_BFD (pst
);
3990 debug_swap
= DEBUG_SWAP (pst
);
3991 debug_info
= DEBUG_INFO (pst
);
3992 pending_list
= PENDING_LIST (pst
);
3993 external_sym_size
= debug_swap
->external_sym_size
;
3994 external_pdr_size
= debug_swap
->external_pdr_size
;
3995 swap_sym_in
= debug_swap
->swap_sym_in
;
3996 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3997 mdebugread_objfile
= objfile
;
3998 cur_fd
= FDR_IDX (pst
);
3999 fh
= ((cur_fd
== -1)
4001 : debug_info
->fdr
+ cur_fd
);
4004 /* See comment in parse_partial_symbols about the @stabs sentinel. */
4005 processing_gcc_compilation
= 0;
4006 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
4010 (*swap_sym_in
) (cur_bfd
,
4011 ((char *) debug_info
->external_sym
4012 + (fh
->isymBase
+ 1) * external_sym_size
),
4014 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
4017 /* We indicate that this is a GCC compilation so that certain
4018 features will be enabled in stabsread/dbxread. */
4019 processing_gcc_compilation
= 2;
4023 if (processing_gcc_compilation
!= 0)
4025 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4027 /* This symbol table contains stabs-in-ecoff entries. */
4029 /* Parse local symbols first. */
4031 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
4033 mdebugread_objfile
= NULL
;
4036 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4042 (*swap_sym_in
) (cur_bfd
,
4043 (((char *) debug_info
->external_sym
)
4044 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4046 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4048 /* XXX This is a hack. It will go away! */
4049 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4051 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4053 /* We should never get non N_STAB symbols here, but they
4054 should be harmless, so keep process_one_symbol from
4055 complaining about them. */
4056 if (type_code
& N_STAB
)
4058 /* If we found a trailing N_SO with no name, process
4059 it here instead of in process_one_symbol, so we
4060 can keep a handle to its symtab. The symtab
4061 would otherwise be ended twice, once in
4062 process_one_symbol, and once after this loop. */
4063 if (type_code
== N_SO
4064 && get_last_source_file ()
4065 && previous_stab_code
!= (unsigned char) N_SO
4068 valu
+= ANOFFSET (section_offsets
,
4069 SECT_OFF_TEXT (objfile
));
4070 previous_stab_code
= N_SO
;
4071 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4073 last_symtab_ended
= 1;
4077 last_symtab_ended
= 0;
4078 process_one_symbol (type_code
, 0, valu
, name
,
4079 section_offsets
, objfile
);
4082 /* Similarly a hack. */
4083 else if (name
[0] == '#')
4085 process_one_symbol (N_SLINE
, 0, valu
, name
,
4086 section_offsets
, objfile
);
4088 if (type_code
== N_FUN
)
4090 /* Make up special symbol to contain
4091 procedure specific info. */
4092 struct mdebug_extra_func_info
*e
=
4093 ((struct mdebug_extra_func_info
*)
4094 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4095 sizeof (struct mdebug_extra_func_info
)));
4096 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4098 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4099 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4100 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4101 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4102 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4103 e
->pdr
.framereg
= -1;
4104 add_symbol_to_list (s
, &local_symbols
);
4107 else if (sh
.st
== stLabel
)
4109 if (sh
.index
== indexNil
)
4111 /* This is what the gcc2_compiled and __gnu_compiled_*
4112 show up as. So don't complain. */
4117 /* Handle encoded stab line number. */
4118 valu
+= ANOFFSET (section_offsets
,
4119 SECT_OFF_TEXT (objfile
));
4120 record_line (current_subfile
, sh
.index
,
4121 gdbarch_addr_bits_remove (gdbarch
, valu
));
4124 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4125 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4126 /* These are generated by gcc-2.x, do not complain. */
4129 complaint (&symfile_complaints
,
4130 _("unknown stabs symbol %s"), name
);
4133 if (! last_symtab_ended
)
4135 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4139 /* There used to be a call to sort_blocks here, but this should not
4140 be necessary for stabs symtabs. And as sort_blocks modifies the
4141 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4142 it did the wrong thing if the first procedure in a file was
4143 generated via asm statements. */
4145 /* Fill in procedure info next. */
4149 struct cleanup
*old_chain
;
4155 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4156 old_chain
= make_cleanup (xfree
, pr_block
);
4158 pdr_ptr
= ((char *) debug_info
->external_pdr
4159 + fh
->ipdFirst
* external_pdr_size
);
4160 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4164 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4166 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4168 /* Determine lowest PDR address, the PDRs are not always
4170 if (pdr_in
== pr_block
)
4171 lowest_pdr_addr
= pdr_in
->adr
;
4172 else if (pdr_in
->adr
< lowest_pdr_addr
)
4173 lowest_pdr_addr
= pdr_in
->adr
;
4177 pdr_in_end
= pdr_in
+ fh
->cpd
;
4178 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4179 parse_procedure (pdr_in
, cust
, pst
);
4181 do_cleanups (old_chain
);
4186 /* This symbol table contains ordinary ecoff entries. */
4194 cust
= new_symtab ("unknown", 0, objfile
);
4198 maxlines
= 2 * fh
->cline
;
4199 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4201 /* The proper language was already determined when building
4202 the psymtab, use it. */
4203 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4206 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4208 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4210 /* Get a new lexical context. */
4212 push_parse_stack ();
4213 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4214 top_stack
->cur_block
4215 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4216 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4217 BLOCK_END (top_stack
->cur_block
) = 0;
4218 top_stack
->blocktype
= stFile
;
4219 top_stack
->cur_type
= 0;
4220 top_stack
->procadr
= 0;
4221 top_stack
->numargs
= 0;
4222 found_ecoff_debugging_info
= 0;
4229 /* Parse local symbols first. */
4230 sym_ptr
= ((char *) debug_info
->external_sym
4231 + fh
->isymBase
* external_sym_size
);
4232 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4233 while (sym_ptr
< sym_end
)
4238 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4239 c
= parse_symbol (&sh
,
4240 debug_info
->external_aux
+ fh
->iauxBase
,
4241 sym_ptr
, fh
->fBigendian
,
4242 section_offsets
, objfile
);
4243 sym_ptr
+= c
* external_sym_size
;
4246 /* Linenumbers. At the end, check if we can save memory.
4247 parse_lines has to look ahead an arbitrary number of PDR
4248 structures, so we swap them all first. */
4252 struct cleanup
*old_chain
;
4258 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4260 old_chain
= make_cleanup (xfree
, pr_block
);
4262 pdr_ptr
= ((char *) debug_info
->external_pdr
4263 + fh
->ipdFirst
* external_pdr_size
);
4264 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4268 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4270 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4272 /* Determine lowest PDR address, the PDRs are not always
4274 if (pdr_in
== pr_block
)
4275 lowest_pdr_addr
= pdr_in
->adr
;
4276 else if (pdr_in
->adr
< lowest_pdr_addr
)
4277 lowest_pdr_addr
= pdr_in
->adr
;
4280 parse_lines (fh
, pr_block
, lines
, maxlines
,
4281 pst
, lowest_pdr_addr
);
4282 if (lines
->nitems
< fh
->cline
)
4283 lines
= shrink_linetable (lines
);
4285 /* Fill in procedure info next. */
4287 pdr_in_end
= pdr_in
+ fh
->cpd
;
4288 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4289 parse_procedure (pdr_in
, NULL
, pst
);
4291 do_cleanups (old_chain
);
4295 size
= lines
->nitems
;
4298 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4299 = ((struct linetable
*)
4300 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4301 lines
, (sizeof (struct linetable
)
4302 + size
* sizeof (lines
->item
))));
4305 /* .. and our share of externals.
4306 XXX use the global list to speed up things here. How?
4307 FIXME, Maybe quit once we have found the right number of ext's? */
4308 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4309 top_stack
->cur_block
4310 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4312 top_stack
->blocktype
= stFile
;
4314 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4315 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4316 parse_external (ext_ptr
, fh
->fBigendian
,
4317 section_offsets
, objfile
);
4319 /* If there are undefined symbols, tell the user.
4320 The alpha has an undefined symbol for every symbol that is
4321 from a shared library, so tell the user only if verbose is on. */
4322 if (info_verbose
&& n_undef_symbols
)
4324 printf_filtered (_("File %s contains %d unresolved references:"),
4325 symtab_to_filename_for_display
4326 (COMPUNIT_FILETABS (cust
)),
4328 printf_filtered ("\n\t%4d variables\n\t%4d "
4329 "procedures\n\t%4d labels\n",
4330 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4331 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4336 sort_blocks (COMPUNIT_FILETABS (cust
));
4339 /* Now link the psymtab and the symtab. */
4340 pst
->compunit_symtab
= cust
;
4342 mdebugread_objfile
= NULL
;
4345 /* Ancillary parsing procedures. */
4347 /* Return 1 if the symbol pointed to by SH has a cross reference
4348 to an opaque aggregate type, else 0. */
4351 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4358 if (sh
->index
== indexNil
)
4361 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4362 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4363 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4367 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4368 if (rn
->rfd
== 0xfff)
4369 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4377 /* Lookup the type at relative index RN. Return it in TPP
4378 if found and in any event come up with its name PNAME.
4379 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4380 Return value says how many aux symbols we ate. */
4383 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4384 enum type_code type_code
,
4385 /* Use to alloc new type if none is found. */
4386 char **pname
, int bigend
, char *sym_name
)
4395 struct mdebug_pending
*pend
;
4399 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4401 /* Escape index means 'the next one'. */
4402 if (rn
->rfd
== 0xfff)
4405 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4412 /* mips cc uses a rf of -1 for opaque struct definitions.
4413 Set TYPE_FLAG_STUB for these types so that check_typedef will
4414 resolve them if the struct gets defined in another compilation unit. */
4417 *pname
= "<undefined>";
4418 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
,
4419 (char *) NULL
, mdebugread_objfile
);
4423 /* mips cc uses an escaped rn->index of 0 for struct return types
4424 of procedures that were compiled without -g. These will always remain
4426 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4428 *pname
= "<undefined>";
4432 /* Find the relative file descriptor and the symbol in it. */
4433 fh
= get_rfd (fd
, rf
);
4434 xref_fd
= fh
- debug_info
->fdr
;
4436 if (rn
->index
>= fh
->csym
)
4438 /* File indirect entry is corrupt. */
4439 *pname
= "<illegal>";
4440 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4444 /* If we have processed this symbol then we left a forwarding
4445 pointer to the type in the pending list. If not, we`ll put
4446 it in a list of pending types, to be processed later when
4447 the file will be. In any event, we collect the name for the
4450 esh
= ((char *) debug_info
->external_sym
4451 + ((fh
->isymBase
+ rn
->index
)
4452 * debug_swap
->external_sym_size
));
4453 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4455 /* Make sure that this type of cross reference can be handled. */
4456 if ((sh
.sc
!= scInfo
4457 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4458 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4459 && sh
.st
!= stEnum
))
4460 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4462 /* File indirect entry is corrupt. */
4463 *pname
= "<illegal>";
4464 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4468 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4470 pend
= is_pending_symbol (fh
, esh
);
4475 /* We have not yet seen this type. */
4477 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4481 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4483 a) forward declarations of structs/unions/enums which are not
4484 defined in this compilation unit.
4485 For these the type will be void. This is a bad design decision
4486 as cross referencing across compilation units is impossible
4487 due to the missing name.
4488 b) forward declarations of structs/unions/enums/typedefs which
4489 are defined later in this file or in another file in the same
4490 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4491 Simply cross reference those again to get the true type.
4492 The forward references are not entered in the pending list and
4493 in the symbol table. */
4495 (*debug_swap
->swap_tir_in
) (bigend
,
4496 &(debug_info
->external_aux
4497 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4499 if (tir
.tq0
!= tqNil
)
4500 complaint (&symfile_complaints
,
4501 _("illegal tq0 in forward typedef for %s"), sym_name
);
4505 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4506 mdebugread_objfile
);
4507 *pname
= "<undefined>";
4514 (debug_info
->external_aux
4515 + fh
->iauxBase
+ sh
.index
+ 1),
4516 tpp
, type_code
, pname
,
4517 fh
->fBigendian
, sym_name
);
4521 /* Follow a forward typedef. This might recursively
4522 call cross_ref till we get a non typedef'ed type.
4523 FIXME: This is not correct behaviour, but gdb currently
4524 cannot handle typedefs without type copying. Type
4525 copying is impossible as we might have mutual forward
4526 references between two files and the copied type would not
4527 get filled in when we later parse its definition. */
4528 *tpp
= parse_type (xref_fd
,
4529 debug_info
->external_aux
+ fh
->iauxBase
,
4533 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4534 add_pending (fh
, esh
, *tpp
);
4538 complaint (&symfile_complaints
,
4539 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4541 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4542 mdebugread_objfile
);
4547 else if (sh
.st
== stTypedef
)
4549 /* Parse the type for a normal typedef. This might recursively call
4550 cross_ref till we get a non typedef'ed type.
4551 FIXME: This is not correct behaviour, but gdb currently
4552 cannot handle typedefs without type copying. But type copying is
4553 impossible as we might have mutual forward references between
4554 two files and the copied type would not get filled in when
4555 we later parse its definition. */
4556 *tpp
= parse_type (xref_fd
,
4557 debug_info
->external_aux
+ fh
->iauxBase
,
4561 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4565 /* Cross reference to a struct/union/enum which is defined
4566 in another file in the same compilation unit but that file
4567 has not been parsed yet.
4568 Initialize the type only, it will be filled in when
4569 it's definition is parsed. */
4570 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
4572 add_pending (fh
, esh
, *tpp
);
4575 /* We used one auxent normally, two if we got a "next one" rf. */
4580 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4581 keeping the symtab sorted. */
4583 static struct symbol
*
4584 mylookup_symbol (char *name
, const struct block
*block
,
4585 domain_enum domain
, enum address_class theclass
)
4587 struct block_iterator iter
;
4592 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4594 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4595 && SYMBOL_DOMAIN (sym
) == domain
4596 && SYMBOL_CLASS (sym
) == theclass
4597 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4601 block
= BLOCK_SUPERBLOCK (block
);
4603 return mylookup_symbol (name
, block
, domain
, theclass
);
4608 /* Add a new symbol S to a block B. */
4611 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4613 symbol_set_symtab (s
, symtab
);
4614 dict_add_symbol (BLOCK_DICT (b
), s
);
4617 /* Add a new block B to a symtab S. */
4620 add_block (struct block
*b
, struct symtab
*s
)
4622 /* Cast away "const", but that's ok because we're building the
4623 symtab and blockvector here. */
4624 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4626 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4627 (sizeof (struct blockvector
)
4628 + BLOCKVECTOR_NBLOCKS (bv
)
4629 * sizeof (bv
->block
)));
4630 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4631 SYMTAB_BLOCKVECTOR (s
) = bv
;
4633 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4636 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4637 MIPS' linenumber encoding might need more than one byte
4638 to describe it, LAST is used to detect these continuation lines.
4640 Combining lines with the same line number seems like a bad idea.
4641 E.g: There could be a line number entry with the same line number after the
4642 prologue and GDB should not ignore it (this is a better way to find
4643 a prologue than mips_skip_prologue).
4644 But due to the compressed line table format there are line number entries
4645 for the same line which are needed to bridge the gap to the next
4646 line number entry. These entries have a bogus address info with them
4647 and we are unable to tell them from intended duplicate line number
4649 This is another reason why -ggdb debugging format is preferable. */
4652 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4654 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4655 Change them to something sensible. */
4659 last
= -2; /* Make sure we record first line. */
4661 if (last
== lineno
) /* Skip continuation lines. */
4664 lt
->item
[lt
->nitems
].line
= lineno
;
4665 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4669 /* Sorting and reordering procedures. */
4671 /* Blocks with a smaller low bound should come first. */
4674 compare_blocks (const void *arg1
, const void *arg2
)
4677 struct block
**b1
= (struct block
**) arg1
;
4678 struct block
**b2
= (struct block
**) arg2
;
4680 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4682 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4686 /* Sort the blocks of a symtab S.
4687 Reorder the blocks in the blockvector by code-address,
4688 as required by some MI search routines. */
4691 sort_blocks (struct symtab
*s
)
4693 /* We have to cast away const here, but this is ok because we're
4694 constructing the blockvector in this code. */
4695 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4697 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4700 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4701 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4702 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4703 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4707 * This is very unfortunate: normally all functions are compiled in
4708 * the order they are found, but if the file is compiled -O3 things
4709 * are very different. It would be nice to find a reliable test
4710 * to detect -O3 images in advance.
4712 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4713 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4714 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4715 sizeof (struct block
*),
4720 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4722 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4723 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4724 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4725 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4728 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4729 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4731 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4732 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4733 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4734 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4738 /* Constructor/restructor/destructor procedures. */
4740 /* Allocate a new symtab for NAME. Needs an estimate of how many
4741 linenumbers MAXLINES we'll put in it. */
4743 static struct compunit_symtab
*
4744 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4746 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4747 struct symtab
*symtab
;
4748 struct blockvector
*bv
;
4750 add_compunit_symtab_to_objfile (cust
);
4751 symtab
= allocate_symtab (cust
, name
);
4753 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4755 /* All symtabs must have at least two blocks. */
4757 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4758 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4759 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4760 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4761 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4763 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4767 /* Allocate a new partial_symtab NAME. */
4769 static struct partial_symtab
*
4770 new_psymtab (char *name
, struct objfile
*objfile
)
4772 struct partial_symtab
*psymtab
;
4774 psymtab
= allocate_psymtab (name
, objfile
);
4776 /* Keep a backpointer to the file's symbols. */
4778 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4779 sizeof (struct symloc
));
4780 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4781 CUR_BFD (psymtab
) = cur_bfd
;
4782 DEBUG_SWAP (psymtab
) = debug_swap
;
4783 DEBUG_INFO (psymtab
) = debug_info
;
4784 PENDING_LIST (psymtab
) = pending_list
;
4786 /* The way to turn this into a symtab is to call... */
4787 psymtab
->read_symtab
= mdebug_read_symtab
;
4792 /* Allocate a linetable array of the given SIZE. Since the struct
4793 already includes one item, we subtract one when calculating the
4794 proper size to allocate. */
4796 static struct linetable
*
4797 new_linetable (int size
)
4799 struct linetable
*l
;
4803 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4804 l
= (struct linetable
*) xmalloc (size
);
4809 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4810 I am not so sure about the 3.4 ones.
4812 Since the struct linetable already includes one item, we subtract one when
4813 calculating the proper size to allocate. */
4815 static struct linetable
*
4816 shrink_linetable (struct linetable
*lt
)
4818 return (struct linetable
*) xrealloc ((void *) lt
,
4819 (sizeof (struct linetable
)
4821 * sizeof (lt
->item
))));
4824 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4826 static struct blockvector
*
4827 new_bvect (int nblocks
)
4829 struct blockvector
*bv
;
4832 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4833 bv
= (struct blockvector
*) xzalloc (size
);
4835 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4840 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4841 is non-zero, assume the block is associated to a function, and make
4842 sure that the symbols are stored linearly; otherwise, store them
4845 static struct block
*
4846 new_block (enum block_type type
)
4848 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4849 allocate the block. Which, in turn, suggests that the block
4850 should be allocated on an obstack. */
4851 struct block
*retval
= XCNEW (struct block
);
4853 if (type
== FUNCTION_BLOCK
)
4854 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4856 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4861 /* Create a new symbol with printname NAME. */
4863 static struct symbol
*
4864 new_symbol (char *name
)
4866 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4868 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4869 &mdebugread_objfile
->objfile_obstack
);
4870 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4874 /* Create a new type with printname NAME. */
4876 static struct type
*
4877 new_type (char *name
)
4881 t
= alloc_type (mdebugread_objfile
);
4882 TYPE_NAME (t
) = name
;
4883 INIT_CPLUS_SPECIFIC (t
);
4887 /* Read ECOFF debugging information from a BFD section. This is
4888 called from elfread.c. It parses the section into a
4889 ecoff_debug_info struct, and then lets the rest of the file handle
4893 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4894 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4896 bfd
*abfd
= objfile
->obfd
;
4897 struct ecoff_debug_info
*info
;
4898 struct cleanup
*back_to
;
4900 /* FIXME: It's not clear whether we should be getting minimal symbol
4901 information from .mdebug in an ELF file, or whether we will.
4902 Re-initialize the minimal symbol reader in case we do. */
4904 init_minimal_symbol_collection ();
4905 back_to
= make_cleanup_discard_minimal_symbols ();
4907 info
= ((struct ecoff_debug_info
*)
4908 obstack_alloc (&objfile
->objfile_obstack
,
4909 sizeof (struct ecoff_debug_info
)));
4911 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4912 error (_("Error reading ECOFF debugging information: %s"),
4913 bfd_errmsg (bfd_get_error ()));
4915 mdebug_build_psymtabs (objfile
, swap
, info
);
4917 install_minimal_symbols (objfile
);
4918 do_cleanups (back_to
);
4922 _initialize_mdebugread (void)
4924 basic_type_data
= register_objfile_data ();
4926 mdebug_register_index
4927 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4928 mdebug_regparm_index
4929 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);