1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2018 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 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
72 We use this define in order to know whether we should override a
73 symbol's ECOFF section with its ELF section. This is necessary in
74 case the symbol's ELF section could not be represented in ECOFF. */
75 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
76 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
78 /* The objfile we are currently reading. */
80 static struct objfile
*mdebugread_objfile
;
84 /* We put a pointer to this structure in the read_symtab_private field
89 /* Index of the FDR that this psymtab represents. */
91 /* The BFD that the psymtab was created from. */
93 const struct ecoff_debug_swap
*debug_swap
;
94 struct ecoff_debug_info
*debug_info
;
95 struct mdebug_pending
**pending_list
;
96 /* Pointer to external symbols for this file. */
98 /* Size of extern_tab. */
100 enum language pst_language
;
103 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
104 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
105 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
106 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
107 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
108 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
110 #define SC_IS_TEXT(sc) ((sc) == scText \
111 || (sc) == scRConst \
114 #define SC_IS_DATA(sc) ((sc) == scData \
119 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
120 #define SC_IS_BSS(sc) ((sc) == scBss)
121 #define SC_IS_SBSS(sc) ((sc) == scSBss)
122 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
124 /* Various complaints about symbol reading that don't abort the process. */
126 index_complaint (const char *arg1
)
128 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
132 unknown_ext_complaint (const char *arg1
)
134 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
138 basic_type_complaint (int arg1
, const char *arg2
)
140 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
145 bad_tag_guess_complaint (const char *arg1
)
147 complaint (&symfile_complaints
,
148 _("guessed tag type of %s incorrectly"), arg1
);
152 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
154 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
159 unexpected_type_code_complaint (const char *arg1
)
161 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
164 /* Macros and extra defs. */
166 /* Puns: hard to find whether -g was used and how. */
168 #define MIN_GLEVEL GLEVEL_0
169 #define compare_glevel(a,b) \
170 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
171 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
173 /* Things that really are local to this module. */
175 /* Remember what we deduced to be the source language of this psymtab. */
177 static enum language psymtab_language
= language_unknown
;
183 /* How to parse debugging information for CUR_BFD. */
185 static const struct ecoff_debug_swap
*debug_swap
;
187 /* Pointers to debugging information for CUR_BFD. */
189 static struct ecoff_debug_info
*debug_info
;
191 /* Pointer to current file decriptor record, and its index. */
196 /* Index of current symbol. */
200 /* Note how much "debuggable" this image is. We would like
201 to see at least one FDR with full symbols. */
203 static int max_gdbinfo
;
204 static int max_glevel
;
206 /* When examining .o files, report on undefined symbols. */
208 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
210 /* Pseudo symbol to use when putting stabs into the symbol table. */
212 static char stabs_symbol
[] = STABS_SYMBOL
;
214 /* Nonzero if we have seen ecoff debugging info for a file. */
216 static int found_ecoff_debugging_info
;
218 /* Forward declarations. */
220 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
223 static void parse_partial_symbols (minimal_symbol_reader
&,
226 static int has_opaque_xref (FDR
*, SYMR
*);
228 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
229 const char **, int, const char *);
231 static struct symbol
*new_symbol (const char *);
233 static struct type
*new_type (char *);
235 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
237 static struct block
*new_block (enum block_type
, enum language
);
239 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
241 static struct linetable
*new_linetable (int);
243 static struct blockvector
*new_bvect (int);
245 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
248 static struct symbol
*mylookup_symbol (const char *, const struct block
*,
249 domain_enum
, enum address_class
);
251 static void sort_blocks (struct symtab
*);
253 static struct partial_symtab
*new_psymtab (const char *, struct objfile
*);
255 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
256 struct partial_symtab
*, const char *);
258 static void add_block (struct block
*, struct symtab
*);
260 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
262 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
264 static struct linetable
*shrink_linetable (struct linetable
*);
266 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
269 static const char *mdebug_next_symbol_text (struct objfile
*);
271 /* Exported procedure: Builds a symtab from the partial symtab SELF.
272 Restores the environment in effect when SELF was created, delegates
273 most of the work to an ancillary procedure, and sorts
274 and reorders the symtab list at the end. SELF is not NULL. */
277 mdebug_read_symtab (struct partial_symtab
*self
, struct objfile
*objfile
)
281 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
282 gdb_flush (gdb_stdout
);
285 next_symbol_text_func
= mdebug_next_symbol_text
;
287 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
289 /* Match with global symbols. This only needs to be done once,
290 after all of the symtabs and dependencies have been read in. */
291 scan_file_globals (objfile
);
294 printf_filtered (_("done.\n"));
297 /* File-level interface functions. */
299 /* Find a file descriptor given its index RF relative to a file CF. */
302 get_rfd (int cf
, int rf
)
308 fdrs
= debug_info
->fdr
;
310 /* Object files do not have the RFD table, all refs are absolute. */
313 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
314 ((char *) debug_info
->external_rfd
316 * debug_swap
->external_rfd_size
)),
321 /* Return a safer print NAME for a file descriptor. */
327 return "<stripped file>";
330 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
334 /* Read in and parse the symtab of the file OBJFILE. Symbols from
335 different sections are relocated via the SECTION_OFFSETS. */
338 mdebug_build_psymtabs (minimal_symbol_reader
&reader
,
339 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
*) XOBNEWVEC (&objfile
->objfile_obstack
, FDR
,
360 info
->symbolic_header
.ifdMax
);
361 fdr_src
= (char *) info
->external_fdr
;
363 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
365 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
366 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
369 parse_partial_symbols (reader
, objfile
);
372 /* Check to make sure file was compiled with -g. If not, warn the
373 user of this limitation. */
374 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
376 if (max_gdbinfo
== 0)
377 printf_unfiltered (_("\n%s not compiled with -g, "
378 "debugging support is limited.\n"),
380 printf_unfiltered (_("You should compile with -g2 or "
381 "-g3 for best debugging support.\n"));
382 gdb_flush (gdb_stdout
);
387 /* Local utilities */
389 /* Map of FDR indexes to partial symtabs. */
393 struct partial_symtab
*pst
; /* the psymtab proper */
394 long n_globals
; /* exported globals (external symbols) */
395 long globals_offset
; /* cumulative */
399 /* Utility stack, used to nest procedures and blocks properly.
400 It is a doubly linked list, to avoid too many alloc/free.
401 Since we might need it quite a few times it is NOT deallocated
404 static struct parse_stack
406 struct parse_stack
*next
, *prev
;
407 struct symtab
*cur_st
; /* Current symtab. */
408 struct block
*cur_block
; /* Block in it. */
410 /* What are we parsing. stFile, or stBlock are for files and
411 blocks. stProc or stStaticProc means we have seen the start of a
412 procedure, but not the start of the block within in. When we see
413 the start of that block, we change it to stNil, without pushing a
414 new block, i.e. stNil means both a procedure and a block. */
418 struct type
*cur_type
; /* Type we parse fields for. */
419 int cur_field
; /* Field number in cur_type. */
420 CORE_ADDR procadr
; /* Start addres of this procedure. */
421 int numargs
; /* Its argument count. */
424 *top_stack
; /* Top stack ptr */
427 /* Enter a new lexical context. */
430 push_parse_stack (void)
432 struct parse_stack
*newobj
;
434 /* Reuse frames if possible. */
435 if (top_stack
&& top_stack
->prev
)
436 newobj
= top_stack
->prev
;
438 newobj
= XCNEW (struct parse_stack
);
439 /* Initialize new frame with previous content. */
442 struct parse_stack
*prev
= newobj
->prev
;
444 *newobj
= *top_stack
;
445 top_stack
->prev
= newobj
;
447 newobj
->next
= top_stack
;
452 /* Exit a lexical context. */
455 pop_parse_stack (void)
460 top_stack
= top_stack
->next
;
464 /* Cross-references might be to things we haven't looked at
465 yet, e.g. type references. To avoid too many type
466 duplications we keep a quick fixup table, an array
467 of lists of references indexed by file descriptor. */
469 struct mdebug_pending
471 struct mdebug_pending
*next
; /* link */
472 char *s
; /* the unswapped symbol */
473 struct type
*t
; /* its partial type descriptor */
477 /* The pending information is kept for an entire object file. We
478 allocate the pending information table when we create the partial
479 symbols, and we store a pointer to the single table in each
482 static struct mdebug_pending
**pending_list
;
484 /* Check whether we already saw symbol SH in file FH. */
486 static struct mdebug_pending
*
487 is_pending_symbol (FDR
*fh
, char *sh
)
489 int f_idx
= fh
- debug_info
->fdr
;
490 struct mdebug_pending
*p
;
492 /* Linear search is ok, list is typically no more than 10 deep. */
493 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
499 /* Add a new symbol SH of type T. */
502 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
504 int f_idx
= fh
- debug_info
->fdr
;
505 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
507 /* Make sure we do not make duplicates. */
510 p
= XOBNEW (&mdebugread_objfile
->objfile_obstack
, mdebug_pending
);
513 p
->next
= pending_list
[f_idx
];
514 pending_list
[f_idx
] = p
;
519 /* Parsing Routines proper. */
522 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
524 complaint (&symfile_complaints
,
525 _("bad register number %d (max %d) in symbol %s"),
526 regnum
, num_regs
- 1, sym
);
529 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
530 For blocks, procedures and types we open a new lexical context.
531 This is basically just a big switch on the symbol's type. Argument
532 AX is the base pointer of aux symbols for this file (fh->iauxBase).
533 EXT_SH points to the unswapped symbol, which is needed for struct,
534 union, etc., types; it is NULL for an EXTR. BIGEND says whether
535 aux symbols are big-endian or little-endian. Return count of
536 SYMR's handled (normally one). */
539 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
541 int regno
= gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
544 || regno
>= (gdbarch_num_regs (gdbarch
)
545 + gdbarch_num_pseudo_regs (gdbarch
)))
547 reg_value_complaint (regno
,
548 gdbarch_num_regs (gdbarch
)
549 + gdbarch_num_pseudo_regs (gdbarch
),
550 SYMBOL_PRINT_NAME (sym
));
552 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
558 static const struct symbol_register_ops mdebug_register_funcs
= {
562 /* The "aclass" indices for computed symbols. */
564 static int mdebug_register_index
;
565 static int mdebug_regparm_index
;
567 /* Common code for symbols describing data. */
570 add_data_symbol (SYMR
*sh
, union aux_ext
*ax
, int bigend
,
571 struct symbol
*s
, int aclass_index
, struct block
*b
,
572 struct objfile
*objfile
, const char *name
)
574 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
575 SYMBOL_ACLASS_INDEX (s
) = aclass_index
;
576 add_symbol (s
, top_stack
->cur_st
, b
);
578 /* Type could be missing if file is compiled without debugging info. */
579 if (SC_IS_UNDEF (sh
->sc
)
580 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
581 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
583 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
584 /* Value of a data symbol is its memory address. */
588 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
589 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
591 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
592 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
593 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
597 struct mdebug_pending
*pend
;
602 long svalue
= sh
->value
;
605 if (ext_sh
== (char *) NULL
)
606 name
= debug_info
->ssext
+ sh
->iss
;
608 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
614 /* Do not relocate relative values.
615 The value of a stEnd symbol is the displacement from the
616 corresponding start symbol value.
617 The value of a stBlock symbol is the displacement from the
618 procedure address. */
619 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
620 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
627 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
631 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
640 case stGlobal
: /* External symbol, goes into global block. */
641 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
643 s
= new_symbol (name
);
644 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
645 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
648 case stStatic
: /* Static data, goes into current block. */
649 b
= top_stack
->cur_block
;
650 s
= new_symbol (name
);
651 if (SC_IS_COMMON (sh
->sc
))
653 /* It is a FORTRAN common block. At least for SGI Fortran the
654 address is not in the symbol; we need to fix it later in
655 scan_file_globals. */
656 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
657 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
658 global_sym_chain
[bucket
] = s
;
661 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
662 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
665 case stLocal
: /* Local variable, goes into current block. */
666 b
= top_stack
->cur_block
;
667 s
= new_symbol (name
);
668 SYMBOL_VALUE (s
) = svalue
;
669 if (sh
->sc
== scRegister
)
670 add_data_symbol (sh
, ax
, bigend
, s
, mdebug_register_index
,
673 add_data_symbol (sh
, ax
, bigend
, s
, LOC_LOCAL
,
677 case stParam
: /* Arg to procedure, goes into current
680 found_ecoff_debugging_info
= 1;
681 top_stack
->numargs
++;
683 /* Special GNU C++ name. */
684 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
685 name
= "this"; /* FIXME, not alloc'd in obstack. */
686 s
= new_symbol (name
);
688 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
689 SYMBOL_IS_ARGUMENT (s
) = 1;
693 /* Pass by value in register. */
694 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
697 /* Pass by reference on stack. */
698 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
701 /* Pass by reference in register. */
702 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
705 /* Pass by value on stack. */
706 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
709 SYMBOL_VALUE (s
) = svalue
;
710 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
711 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
714 case stLabel
: /* label, goes into current block. */
715 s
= new_symbol (name
);
716 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
717 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
718 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
719 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
720 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
723 case stProc
: /* Procedure, usually goes into global block. */
724 case stStaticProc
: /* Static procedure, goes into current block. */
725 /* For stProc symbol records, we need to check the storage class
726 as well, as only (stProc, scText) entries represent "real"
727 procedures - See the Compaq document titled "Object File /
728 Symbol Table Format Specification" for more information.
729 If the storage class is not scText, we discard the whole block
730 of symbol records for this stProc. */
731 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
733 char *ext_tsym
= ext_sh
;
734 int keep_counting
= 1;
737 while (keep_counting
)
739 ext_tsym
+= external_sym_size
;
740 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
750 complaint (&symfile_complaints
,
751 _("unknown symbol type 0x%x"), sh
->st
);
757 s
= new_symbol (name
);
758 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
759 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
760 /* Type of the return value. */
761 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
762 t
= objfile_type (objfile
)->builtin_int
;
765 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
766 if (strcmp (name
, "malloc") == 0
767 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
769 /* I don't know why, but, at least under Alpha GNU/Linux,
770 when linking against a malloc without debugging
771 symbols, its read as a function returning void---this
772 is bad because it means we cannot call functions with
773 string arguments interactively; i.e., "call
774 printf("howdy\n")" would fail with the error message
775 "program has no memory available". To avoid this, we
776 patch up the type and make it void*
777 instead. (davidm@azstarnet.com). */
778 t
= make_pointer_type (t
, NULL
);
781 b
= top_stack
->cur_block
;
782 if (sh
->st
== stProc
)
784 const struct blockvector
*bv
785 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
787 /* The next test should normally be true, but provides a
788 hook for nested functions (which we don't want to make
790 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
791 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
792 /* Irix 5 sometimes has duplicate names for the same
793 function. We want to add such names up at the global
794 level, not as a nested function. */
795 else if (sh
->value
== top_stack
->procadr
)
796 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
798 add_symbol (s
, top_stack
->cur_st
, b
);
800 /* Make a type for the procedure itself. */
801 SYMBOL_TYPE (s
) = lookup_function_type (t
);
803 /* All functions in C++ have prototypes. For C we don't have enough
804 information in the debug info. */
805 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
806 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
808 /* Create and enter a new lexical context. */
809 b
= new_block (FUNCTION_BLOCK
, SYMBOL_LANGUAGE (s
));
810 SYMBOL_BLOCK_VALUE (s
) = b
;
811 BLOCK_FUNCTION (b
) = s
;
812 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
813 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
814 add_block (b
, top_stack
->cur_st
);
816 /* Not if we only have partial info. */
817 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
821 top_stack
->cur_block
= b
;
822 top_stack
->blocktype
= sh
->st
;
823 top_stack
->cur_type
= SYMBOL_TYPE (s
);
824 top_stack
->cur_field
= -1;
825 top_stack
->procadr
= sh
->value
;
826 top_stack
->numargs
= 0;
829 /* Beginning of code for structure, union, and enum definitions.
830 They all share a common set of local variables, defined here. */
832 enum type_code type_code
;
838 case stStruct
: /* Start a block defining a struct type. */
839 type_code
= TYPE_CODE_STRUCT
;
840 goto structured_common
;
842 case stUnion
: /* Start a block defining a union type. */
843 type_code
= TYPE_CODE_UNION
;
844 goto structured_common
;
846 case stEnum
: /* Start a block defining an enum type. */
847 type_code
= TYPE_CODE_ENUM
;
848 goto structured_common
;
850 case stBlock
: /* Either a lexical block, or some type. */
851 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
852 goto case_stBlock_code
; /* Lexical block */
854 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
856 /* Common code for handling struct, union, enum, and/or as-yet-
857 unknown-type blocks of info about structured data. `type_code'
858 has been set to the proper TYPE_CODE, if we know it. */
860 found_ecoff_debugging_info
= 1;
862 top_stack
->blocktype
= stBlock
;
864 /* First count the number of fields and the highest value. */
867 for (ext_tsym
= ext_sh
+ external_sym_size
;
869 ext_tsym
+= external_sym_size
)
873 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
878 /* C++ encodes class types as structures where there the
879 methods are encoded as stProc. The scope of stProc
880 symbols also ends with stEnd, thus creating a risk of
881 taking the wrong stEnd symbol record as the end of
882 the current struct, which would cause GDB to undercount
883 the real number of fields in this struct. To make sure
884 we really reached the right stEnd symbol record, we
885 check the associated name, and match it against the
886 struct name. Since method names are mangled while
887 the class name is not, there is no risk of having a
888 method whose name is identical to the class name
889 (in particular constructor method names are different
890 from the class name). There is therefore no risk that
891 this check stops the count on the StEnd of a method.
893 Also, assume that we're really at the end when tsym.iss
895 if (tsym
.iss
== issNull
896 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
902 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
904 /* If the type of the member is Nil (or Void),
905 without qualifiers, assume the tag is an
907 Alpha cc -migrate enums are recognized by a zero
908 index and a zero symbol value.
909 DU 4.0 cc enums are recognized by a member type of
910 btEnum without qualifiers and a zero symbol value. */
911 if (tsym
.index
== indexNil
912 || (tsym
.index
== 0 && sh
->value
== 0))
913 type_code
= TYPE_CODE_ENUM
;
916 (*debug_swap
->swap_tir_in
) (bigend
,
917 &ax
[tsym
.index
].a_ti
,
919 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
920 || (tir
.bt
== btEnum
&& sh
->value
== 0))
922 type_code
= TYPE_CODE_ENUM
;
926 if (tsym
.value
> max_value
)
927 max_value
= tsym
.value
;
936 /* This is a no-op; is it trying to tell us something
937 we should be checking? */
938 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
942 /* This is something like a struct within a
943 struct. Skip over the fields of the inner
944 struct. The -1 is because the for loop will
945 increment ext_tsym. */
946 ext_tsym
= ((char *) debug_info
->external_sym
947 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
948 * external_sym_size
));
954 /* mips cc puts out a typedef for struct x if it is not yet
955 defined when it encounters
956 struct y { struct x *xp; };
961 /* Irix5 cc puts out a stIndirect for struct x if it is not
962 yet defined when it encounters
963 struct y { struct x *xp; };
968 complaint (&symfile_complaints
,
969 _("declaration block contains "
970 "unhandled symbol type %d"),
976 /* In an stBlock, there is no way to distinguish structs,
977 unions, and enums at this point. This is a bug in the
978 original design (that has been fixed with the recent
979 addition of the stStruct, stUnion, and stEnum symbol
980 types.) The way you can tell is if/when you see a variable
981 or field of that type. In that case the variable's type
982 (in the AUX table) says if the type is struct, union, or
983 enum, and points back to the stBlock here. So you can
984 patch the tag kind up later - but only if there actually is
985 a variable or field of that type.
987 So until we know for sure, we will guess at this point.
989 If the first member has index==indexNil or a void type,
990 assume we have an enumeration.
991 Otherwise, if there is more than one member, and all
992 the members have offset 0, assume we have a union.
993 Otherwise, assume we have a struct.
995 The heuristic could guess wrong in the case of of an
996 enumeration with no members or a union with one (or zero)
997 members, or when all except the last field of a struct have
998 width zero. These are uncommon and/or illegal situations,
999 and in any case guessing wrong probably doesn't matter
1002 But if we later do find out we were wrong, we fixup the tag
1003 kind. Members of an enumeration must be handled
1004 differently from struct/union fields, and that is harder to
1005 patch up, but luckily we shouldn't need to. (If there are
1006 any enumeration members, we can tell for sure it's an enum
1009 if (type_code
== TYPE_CODE_UNDEF
)
1011 if (nfields
> 1 && max_value
== 0)
1012 type_code
= TYPE_CODE_UNION
;
1014 type_code
= TYPE_CODE_STRUCT
;
1017 /* Create a new type or use the pending type. */
1018 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1019 if (pend
== (struct mdebug_pending
*) NULL
)
1021 t
= new_type (NULL
);
1022 add_pending (cur_fdr
, ext_sh
, t
);
1027 /* Do not set the tag name if it is a compiler generated tag name
1028 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1029 Alpha cc puts out an sh->iss of zero for those. */
1030 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1031 TYPE_TAG_NAME (t
) = NULL
;
1033 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1034 name
, (char *) NULL
);
1036 TYPE_CODE (t
) = type_code
;
1037 TYPE_LENGTH (t
) = sh
->value
;
1038 TYPE_NFIELDS (t
) = nfields
;
1039 TYPE_FIELDS (t
) = f
= ((struct field
*)
1041 nfields
* sizeof (struct field
)));
1043 if (type_code
== TYPE_CODE_ENUM
)
1045 int unsigned_enum
= 1;
1047 /* This is a non-empty enum. */
1049 /* DEC c89 has the number of enumerators in the sh.value field,
1050 not the type length, so we have to compensate for that
1051 incompatibility quirk.
1052 This might do the wrong thing for an enum with one or two
1053 enumerators and gcc -gcoff -fshort-enums, but these cases
1054 are hopefully rare enough.
1055 Alpha cc -migrate has a sh.value field of zero, we adjust
1057 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1058 || TYPE_LENGTH (t
) == 0)
1059 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1060 for (ext_tsym
= ext_sh
+ external_sym_size
;
1062 ext_tsym
+= external_sym_size
)
1065 struct symbol
*enum_sym
;
1067 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1069 if (tsym
.st
!= stMember
)
1072 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1073 FIELD_TYPE (*f
) = t
;
1074 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1075 FIELD_BITSIZE (*f
) = 0;
1077 enum_sym
= allocate_symbol (mdebugread_objfile
);
1078 SYMBOL_SET_LINKAGE_NAME
1080 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1081 f
->name
, strlen (f
->name
)));
1082 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1083 SYMBOL_TYPE (enum_sym
) = t
;
1084 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1085 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1086 if (SYMBOL_VALUE (enum_sym
) < 0)
1088 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1090 /* Skip the stMembers that we've handled. */
1095 TYPE_UNSIGNED (t
) = 1;
1097 /* Make this the current type. */
1098 top_stack
->cur_type
= t
;
1099 top_stack
->cur_field
= 0;
1101 /* Do not create a symbol for alpha cc unnamed structs. */
1105 /* gcc puts out an empty struct for an opaque struct definitions,
1106 do not create a symbol for it either. */
1107 if (TYPE_NFIELDS (t
) == 0)
1113 s
= new_symbol (name
);
1114 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1115 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1116 SYMBOL_VALUE (s
) = 0;
1117 SYMBOL_TYPE (s
) = t
;
1118 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1121 /* End of local variables shared by struct, union, enum, and
1122 block (as yet unknown struct/union/enum) processing. */
1126 found_ecoff_debugging_info
= 1;
1127 /* Beginnning of (code) block. Value of symbol
1128 is the displacement from procedure start. */
1129 push_parse_stack ();
1131 /* Do not start a new block if this is the outermost block of a
1132 procedure. This allows the LOC_BLOCK symbol to point to the
1133 block with the local variables, so funcname::var works. */
1134 if (top_stack
->blocktype
== stProc
1135 || top_stack
->blocktype
== stStaticProc
)
1137 top_stack
->blocktype
= stNil
;
1141 top_stack
->blocktype
= stBlock
;
1142 b
= new_block (NON_FUNCTION_BLOCK
, psymtab_language
);
1143 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1144 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1145 top_stack
->cur_block
= b
;
1146 add_block (b
, top_stack
->cur_st
);
1149 case stEnd
: /* end (of anything) */
1150 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1152 /* Finished with type */
1153 top_stack
->cur_type
= 0;
1155 else if (sh
->sc
== scText
&&
1156 (top_stack
->blocktype
== stProc
||
1157 top_stack
->blocktype
== stStaticProc
))
1159 /* Finished with procedure */
1160 const struct blockvector
*bv
1161 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1162 struct mdebug_extra_func_info
*e
;
1163 struct block
*b
= top_stack
->cur_block
;
1164 struct type
*ftype
= top_stack
->cur_type
;
1167 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1169 /* Make up special symbol to contain procedure specific info. */
1170 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1171 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1172 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1173 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1174 e
= OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
1175 mdebug_extra_func_info
);
1176 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1177 e
->numargs
= top_stack
->numargs
;
1178 e
->pdr
.framereg
= -1;
1179 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1181 /* f77 emits proc-level with address bounds==[0,0],
1182 So look for such child blocks, and patch them. */
1183 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1185 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1187 if (BLOCK_SUPERBLOCK (b_bad
) == b
1188 && BLOCK_START (b_bad
) == top_stack
->procadr
1189 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1191 BLOCK_START (b_bad
) = BLOCK_START (b
);
1192 BLOCK_END (b_bad
) = BLOCK_END (b
);
1196 if (TYPE_NFIELDS (ftype
) <= 0)
1198 /* No parameter type information is recorded with the function's
1199 type. Set that from the type of the parameter symbols. */
1200 int nparams
= top_stack
->numargs
;
1206 struct block_iterator iter
;
1208 TYPE_NFIELDS (ftype
) = nparams
;
1209 TYPE_FIELDS (ftype
) = (struct field
*)
1210 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1213 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1215 if (iparams
== nparams
)
1218 if (SYMBOL_IS_ARGUMENT (sym
))
1220 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1221 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1228 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1230 /* End of (code) block. The value of the symbol is the
1231 displacement from the procedure`s start address of the
1232 end of this block. */
1233 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1235 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1237 /* End of outermost block. Pop parse stack and ignore. The
1238 following stEnd of stProc will take care of the block. */
1241 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1243 /* End of file. Pop parse stack and ignore. Higher
1244 level code deals with this. */
1248 complaint (&symfile_complaints
,
1249 _("stEnd with storage class %d not handled"), sh
->sc
);
1251 pop_parse_stack (); /* Restore previous lexical context. */
1254 case stMember
: /* member of struct or union */
1255 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1256 FIELD_NAME (*f
) = name
;
1257 SET_FIELD_BITPOS (*f
, sh
->value
);
1259 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1260 &bitsize
, bigend
, name
);
1261 FIELD_BITSIZE (*f
) = bitsize
;
1264 case stIndirect
: /* forward declaration on Irix5 */
1265 /* Forward declarations from Irix5 cc are handled by cross_ref,
1269 case stTypedef
: /* type definition */
1270 found_ecoff_debugging_info
= 1;
1272 /* Typedefs for forward declarations and opaque structs from alpha cc
1273 are handled by cross_ref, skip them. */
1277 /* Parse the type or use the pending type. */
1278 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1279 if (pend
== (struct mdebug_pending
*) NULL
)
1281 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1282 add_pending (cur_fdr
, ext_sh
, t
);
1287 /* Mips cc puts out a typedef with the name of the struct for forward
1288 declarations. These should not go into the symbol table and
1289 TYPE_NAME should not be set for them.
1290 They can't be distinguished from an intentional typedef to
1291 the same name however:
1293 struct x { int ix; int jx; };
1297 struct xx {int ixx; int jxx; };
1298 generates a cross referencing stTypedef for x and xx.
1299 The user visible effect of this is that the type of a pointer
1300 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1301 The problem is fixed with alpha cc and Irix5 cc. */
1303 /* However if the typedef cross references to an opaque aggregate, it
1304 is safe to omit it from the symbol table. */
1306 if (has_opaque_xref (cur_fdr
, sh
))
1308 s
= new_symbol (name
);
1309 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1310 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1311 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1312 SYMBOL_TYPE (s
) = t
;
1313 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1315 /* Incomplete definitions of structs should not get a name. */
1316 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1317 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1318 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1319 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1321 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1322 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1324 /* If we are giving a name to a type such as "pointer to
1325 foo" or "function returning foo", we better not set
1326 the TYPE_NAME. If the program contains "typedef char
1327 *caddr_t;", we don't want all variables of type char
1328 * to print as caddr_t. This is not just a
1329 consequence of GDB's type management; CC and GCC (at
1330 least through version 2.4) both output variables of
1331 either type char * or caddr_t with the type
1332 refering to the stTypedef symbol for caddr_t. If a future
1333 compiler cleans this up it GDB is not ready for it
1334 yet, but if it becomes ready we somehow need to
1335 disable this check (without breaking the PCC/GCC2.4
1340 Fortunately, this check seems not to be necessary
1341 for anything except pointers or functions. */
1344 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1348 case stFile
: /* file name */
1349 push_parse_stack ();
1350 top_stack
->blocktype
= sh
->st
;
1353 /* I`ve never seen these for C */
1355 break; /* register relocation */
1357 break; /* forwarding address */
1359 break; /* constant */
1361 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1370 static const struct objfile_data
*basic_type_data
;
1372 static struct type
*
1373 basic_type (int bt
, struct objfile
*objfile
)
1375 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1376 struct type
**map_bt
1377 = (struct type
**) objfile_data (objfile
, basic_type_data
);
1385 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1386 btMax
, struct type
*);
1387 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1396 tp
= objfile_type (objfile
)->builtin_void
;
1400 tp
= init_pointer_type (objfile
, 32, "adr_32",
1401 objfile_type (objfile
)->builtin_void
);
1405 tp
= init_integer_type (objfile
, 8, 0, "char");
1406 TYPE_NOSIGN (tp
) = 1;
1410 tp
= init_integer_type (objfile
, 8, 1, "unsigned char");
1414 tp
= init_integer_type (objfile
, 16, 0, "short");
1418 tp
= init_integer_type (objfile
, 16, 1, "unsigned short");
1422 tp
= init_integer_type (objfile
, 32, 0, "int");
1426 tp
= init_integer_type (objfile
, 32, 1, "unsigned int");
1430 tp
= init_integer_type (objfile
, 32, 0, "long");
1434 tp
= init_integer_type (objfile
, 32, 1, "unsigned long");
1438 tp
= init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
1439 "float", gdbarch_float_format (gdbarch
));
1443 tp
= init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
1444 "double", gdbarch_double_format (gdbarch
));
1448 tp
= init_complex_type (objfile
, "complex",
1449 basic_type (btFloat
, objfile
));
1453 tp
= init_complex_type (objfile
, "double complex",
1454 basic_type (btFloat
, objfile
));
1458 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1459 good? Would we be better off with TYPE_CODE_ERROR? Should
1460 TYPE_CODE_ERROR print things in hex if it knows the size? */
1461 tp
= init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
1466 tp
= init_type (objfile
, TYPE_CODE_ERROR
,
1467 gdbarch_double_bit (gdbarch
), "floating decimal");
1471 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1473 tp
= init_type (objfile
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
1477 tp
= objfile_type (objfile
)->builtin_void
;
1481 tp
= init_integer_type (objfile
, 64, 0, "long");
1485 tp
= init_integer_type (objfile
, 64, 1, "unsigned long");
1489 tp
= init_integer_type (objfile
, 64, 0, "long long");
1493 tp
= init_integer_type (objfile
, 64, 1, "unsigned long long");
1497 tp
= init_pointer_type (objfile
, 64, "adr_64",
1498 objfile_type (objfile
)->builtin_void
);
1502 tp
= init_integer_type (objfile
, 64, 0, "int");
1506 tp
= init_integer_type (objfile
, 64, 1, "unsigned int");
1518 /* Parse the type information provided in the raw AX entries for
1519 the symbol SH. Return the bitfield size in BS, in case.
1520 We must byte-swap the AX entries before we use them; BIGEND says whether
1521 they are big-endian or little-endian (from fh->fBigendian). */
1523 static struct type
*
1524 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1525 int bigend
, const char *sym_name
)
1528 struct type
*tp
= 0;
1529 enum type_code type_code
= TYPE_CODE_UNDEF
;
1531 /* Handle undefined types, they have indexNil. */
1532 if (aux_index
== indexNil
)
1533 return basic_type (btInt
, mdebugread_objfile
);
1535 /* Handle corrupt aux indices. */
1536 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1538 index_complaint (sym_name
);
1539 return basic_type (btInt
, mdebugread_objfile
);
1543 /* Use aux as a type information record, map its basic type. */
1544 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1545 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1548 /* Cannot use builtin types -- build our own. */
1552 type_code
= TYPE_CODE_STRUCT
;
1555 type_code
= TYPE_CODE_UNION
;
1558 type_code
= TYPE_CODE_ENUM
;
1561 type_code
= TYPE_CODE_RANGE
;
1564 type_code
= TYPE_CODE_SET
;
1567 /* alpha cc -migrate uses this for typedefs. The true type will
1568 be obtained by crossreferencing below. */
1569 type_code
= TYPE_CODE_ERROR
;
1572 /* alpha cc uses this for typedefs. The true type will be
1573 obtained by crossreferencing below. */
1574 type_code
= TYPE_CODE_ERROR
;
1577 basic_type_complaint (t
->bt
, sym_name
);
1578 return basic_type (btInt
, mdebugread_objfile
);
1582 /* Move on to next aux. */
1587 int width
= AUX_GET_WIDTH (bigend
, ax
);
1589 /* Inhibit core dumps if TIR is corrupted. */
1590 if (bs
== (int *) NULL
)
1592 /* Alpha cc -migrate encodes char and unsigned char types
1593 as short and unsigned short types with a field width of 8.
1594 Enum types also have a field width which we ignore for now. */
1595 if (t
->bt
== btShort
&& width
== 8)
1596 tp
= basic_type (btChar
, mdebugread_objfile
);
1597 else if (t
->bt
== btUShort
&& width
== 8)
1598 tp
= basic_type (btUChar
, mdebugread_objfile
);
1599 else if (t
->bt
== btEnum
)
1602 complaint (&symfile_complaints
,
1603 _("can't handle TIR fBitfield for %s"),
1611 /* A btIndirect entry cross references to an aux entry containing
1613 if (t
->bt
== btIndirect
)
1620 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1622 if (rn
->rfd
== 0xfff)
1624 rf
= AUX_GET_ISYM (bigend
, ax
);
1632 complaint (&symfile_complaints
,
1633 _("unable to cross ref btIndirect for %s"), sym_name
);
1634 return basic_type (btInt
, mdebugread_objfile
);
1636 xref_fh
= get_rfd (fd
, rf
);
1637 xref_fd
= xref_fh
- debug_info
->fdr
;
1638 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1639 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1642 /* All these types really point to some (common) MIPS type
1643 definition, and only the type-qualifiers fully identify
1644 them. We'll make the same effort at sharing. */
1645 if (t
->bt
== btStruct
||
1649 /* btSet (I think) implies that the name is a tag name, not a typedef
1650 name. This apparently is a MIPS extension for C sets. */
1655 /* Try to cross reference this type, build new type on failure. */
1656 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1657 if (tp
== (struct type
*) NULL
)
1658 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1660 /* DEC c89 produces cross references to qualified aggregate types,
1661 dereference them. */
1662 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1663 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1664 tp
= TYPE_TARGET_TYPE (tp
);
1666 /* Make sure that TYPE_CODE(tp) has an expected type code.
1667 Any type may be returned from cross_ref if file indirect entries
1669 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1670 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1671 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1673 unexpected_type_code_complaint (sym_name
);
1677 /* Usually, TYPE_CODE(tp) is already type_code. The main
1678 exception is if we guessed wrong re struct/union/enum.
1679 But for struct vs. union a wrong guess is harmless, so
1680 don't complain(). */
1681 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1682 && type_code
!= TYPE_CODE_ENUM
)
1683 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1684 && type_code
== TYPE_CODE_ENUM
))
1686 bad_tag_guess_complaint (sym_name
);
1689 if (TYPE_CODE (tp
) != type_code
)
1691 TYPE_CODE (tp
) = type_code
;
1694 /* Do not set the tag name if it is a compiler generated tag name
1695 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1696 if (name
[0] == '.' || name
[0] == '\0')
1697 TYPE_TAG_NAME (tp
) = NULL
;
1698 else if (TYPE_TAG_NAME (tp
) == NULL
1699 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1702 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1703 name
, strlen (name
)));
1707 /* All these types really point to some (common) MIPS type
1708 definition, and only the type-qualifiers fully identify
1709 them. We'll make the same effort at sharing.
1710 FIXME: We are not doing any guessing on range types. */
1711 if (t
->bt
== btRange
)
1715 /* Try to cross reference this type, build new type on failure. */
1716 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1717 if (tp
== (struct type
*) NULL
)
1718 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1720 /* Make sure that TYPE_CODE(tp) has an expected type code.
1721 Any type may be returned from cross_ref if file indirect entries
1723 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1725 unexpected_type_code_complaint (sym_name
);
1729 /* Usually, TYPE_CODE(tp) is already type_code. The main
1730 exception is if we guessed wrong re struct/union/enum. */
1731 if (TYPE_CODE (tp
) != type_code
)
1733 bad_tag_guess_complaint (sym_name
);
1734 TYPE_CODE (tp
) = type_code
;
1736 if (TYPE_NAME (tp
) == NULL
1737 || strcmp (TYPE_NAME (tp
), name
) != 0)
1740 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1741 name
, strlen (name
)));
1744 if (t
->bt
== btTypedef
)
1748 /* Try to cross reference this type, it should succeed. */
1749 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1750 if (tp
== (struct type
*) NULL
)
1752 complaint (&symfile_complaints
,
1753 _("unable to cross ref btTypedef for %s"), sym_name
);
1754 tp
= basic_type (btInt
, mdebugread_objfile
);
1758 /* Deal with range types. */
1759 if (t
->bt
== btRange
)
1761 TYPE_NFIELDS (tp
) = 0;
1762 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1763 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1764 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1766 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1770 /* Parse all the type qualifiers now. If there are more
1771 than 6 the game will continue in the next aux. */
1775 #define PARSE_TQ(tq) \
1776 if (t->tq != tqNil) \
1777 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1789 /* mips cc 2.x and gcc never put out continued aux entries. */
1793 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1797 /* Complain for illegal continuations due to corrupt aux entries. */
1799 complaint (&symfile_complaints
,
1800 _("illegal TIR continued for %s"), sym_name
);
1805 /* Make up a complex type from a basic one. Type is passed by
1806 reference in TPP and side-effected as necessary. The type
1807 qualifier TQ says how to handle the aux symbols at AX for
1808 the symbol SX we are currently analyzing. BIGEND says whether
1809 aux symbols are big-endian or little-endian.
1810 Returns the number of aux symbols we parsed. */
1813 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1814 const char *sym_name
)
1819 /* Used in array processing. */
1830 t
= lookup_pointer_type (*tpp
);
1835 t
= lookup_function_type (*tpp
);
1842 /* Determine and record the domain type (type of index). */
1843 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1849 rf
= AUX_GET_ISYM (bigend
, ax
);
1852 fh
= get_rfd (fd
, rf
);
1854 indx
= parse_type (fh
- debug_info
->fdr
,
1855 debug_info
->external_aux
+ fh
->iauxBase
,
1856 id
, (int *) NULL
, bigend
, sym_name
);
1858 /* The bounds type should be an integer type, but might be anything
1859 else due to corrupt aux entries. */
1860 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1862 complaint (&symfile_complaints
,
1863 _("illegal array index type for %s, assuming int"),
1865 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1868 /* Get the bounds, and create the array type. */
1870 lower
= AUX_GET_DNLOW (bigend
, ax
);
1872 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1874 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1876 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1879 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1881 /* We used to fill in the supplied array element bitsize
1882 here if the TYPE_LENGTH of the target type was zero.
1883 This happens for a `pointer to an array of anonymous structs',
1884 but in this case the array element bitsize is also zero,
1885 so nothing is gained.
1886 And we used to check the TYPE_LENGTH of the target type against
1887 the supplied array element bitsize.
1888 gcc causes a mismatch for `pointer to array of object',
1889 since the sdb directives it uses do not have a way of
1890 specifying the bitsize, but it does no harm (the
1891 TYPE_LENGTH should be correct) and we should be able to
1892 ignore the erroneous bitsize from the auxiliary entry safely.
1893 dbx seems to ignore it too. */
1895 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1896 if (TYPE_LENGTH (*tpp
) == 0)
1897 TYPE_TARGET_STUB (t
) = 1;
1903 /* Volatile -- currently ignored */
1907 /* Const -- currently ignored */
1911 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1917 /* Parse a procedure descriptor record PR. Note that the procedure is
1918 parsed _after_ the local symbols, now we just insert the extra
1919 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1920 already been placed in the procedure's main block. Note also that
1921 images that have been partially stripped (ld -x) have been deprived
1922 of local symbols, and we have to cope with them here. FIRST_OFF is
1923 the offset of the first procedure for this FDR; we adjust the
1924 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1925 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1926 in question, or NULL to use top_stack->cur_block. */
1929 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1930 struct partial_symtab
*pst
)
1932 struct symbol
*s
, *i
;
1933 const struct block
*b
;
1936 /* Simple rule to find files linked "-x". */
1937 if (cur_fdr
->rss
== -1)
1941 /* Static procedure at address pr->adr. Sigh. */
1942 /* FIXME-32x64. assuming pr->adr fits in long. */
1943 complaint (&symfile_complaints
,
1944 _("can't handle PDR for static proc at 0x%lx"),
1945 (unsigned long) pr
->adr
);
1953 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1954 ((char *) debug_info
->external_ext
1956 * debug_swap
->external_ext_size
)),
1958 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1966 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1967 ((char *) debug_info
->external_sym
1968 + ((cur_fdr
->isymBase
+ pr
->isym
)
1969 * debug_swap
->external_sym_size
)),
1971 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1974 if (search_symtab
!= NULL
)
1977 /* This loses both in the case mentioned (want a static, find a global),
1978 but also if we are looking up a non-mangled name which happens to
1979 match the name of a mangled function. */
1980 /* We have to save the cur_fdr across the call to lookup_symbol.
1981 If the pdr is for a static function and if a global function with
1982 the same name exists, lookup_symbol will eventually read in the symtab
1983 for the global function and clobber cur_fdr. */
1984 FDR
*save_cur_fdr
= cur_fdr
;
1986 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1987 cur_fdr
= save_cur_fdr
;
1991 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
1998 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1999 VAR_DOMAIN
, LOC_BLOCK
);
2003 b
= SYMBOL_BLOCK_VALUE (s
);
2007 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2011 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2012 s
= new_symbol (sh_name
);
2013 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2014 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2015 /* Donno its type, hope int is ok. */
2017 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2018 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2019 /* Won't have symbols for this one. */
2021 SYMBOL_BLOCK_VALUE (s
) = b
;
2022 BLOCK_FUNCTION (b
) = s
;
2023 BLOCK_START (b
) = pr
->adr
;
2024 /* BOUND used to be the end of procedure's text, but the
2025 argument is no longer passed in. */
2026 BLOCK_END (b
) = bound
;
2027 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2028 add_block (b
, top_stack
->cur_st
);
2032 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2036 struct mdebug_extra_func_info
*e
;
2038 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2041 /* GDB expects the absolute function start address for the
2042 procedure descriptor in e->pdr.adr.
2043 As the address in the procedure descriptor is usually relative,
2044 we would have to relocate e->pdr.adr with cur_fdr->adr and
2045 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2046 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2047 in shared libraries on some systems, and on other systems
2048 e->pdr.adr is sometimes offset by a bogus value.
2049 To work around these problems, we replace e->pdr.adr with
2050 the start address of the function. */
2051 e
->pdr
.adr
= BLOCK_START (b
);
2054 /* It would be reasonable that functions that have been compiled
2055 without debugging info have a btNil type for their return value,
2056 and functions that are void and are compiled with debugging info
2058 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2059 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2061 The glevel field in cur_fdr could be used to determine the presence
2062 of debugging info, but GCC doesn't always pass the -g switch settings
2063 to the assembler and GAS doesn't set the glevel field from the -g switch
2065 To work around these problems, the return value type of a TYPE_CODE_VOID
2066 function is adjusted accordingly if no debugging info was found in the
2067 compilation unit. */
2069 if (processing_gcc_compilation
== 0
2070 && found_ecoff_debugging_info
== 0
2071 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2072 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2075 /* Parse the external symbol ES. Just call parse_symbol() after
2076 making sure we know where the aux are for it.
2077 BIGEND says whether aux entries are big-endian or little-endian.
2079 This routine clobbers top_stack->cur_block and ->cur_st. */
2081 static void parse_external (EXTR
*, int, struct section_offsets
*,
2085 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2086 struct objfile
*objfile
)
2090 if (es
->ifd
!= ifdNil
)
2093 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2094 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2098 cur_fdr
= debug_info
->fdr
;
2102 /* Reading .o files */
2103 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2106 switch (es
->asym
.st
)
2109 /* These are generated for static symbols in .o files,
2130 /* FIXME: Turn this into a complaint? */
2132 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2133 what
, debug_info
->ssext
+ es
->asym
.iss
,
2134 fdr_name (cur_fdr
));
2138 switch (es
->asym
.st
)
2142 /* There is no need to parse the external procedure symbols.
2143 If they are from objects compiled without -g, their index will
2144 be indexNil, and the symbol definition from the minimal symbol
2145 is preferrable (yielding a function returning int instead of int).
2146 If the index points to a local procedure symbol, the local
2147 symbol already provides the correct type.
2148 Note that the index of the external procedure symbol points
2149 to the local procedure symbol in the local symbol table, and
2150 _not_ to the auxiliary symbol info. */
2154 /* Global common symbols are resolved by the runtime loader,
2156 if (SC_IS_COMMON (es
->asym
.sc
))
2159 /* Note that the case of a symbol with indexNil must be handled
2160 anyways by parse_symbol(). */
2161 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2162 bigend
, section_offsets
, objfile
);
2169 /* Parse the line number info for file descriptor FH into
2170 GDB's linetable LT. MIPS' encoding requires a little bit
2171 of magic to get things out. Note also that MIPS' line
2172 numbers can go back and forth, apparently we can live
2173 with that and do not need to reorder our linetables. */
2175 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2176 struct partial_symtab
*, CORE_ADDR
);
2179 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2180 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2182 unsigned char *base
;
2184 int delta
, count
, lineno
= 0;
2186 if (fh
->cbLine
== 0)
2189 /* Scan by procedure descriptors. */
2191 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2195 unsigned char *halt
;
2197 /* No code for this one. */
2198 if (pr
->iline
== ilineNil
||
2199 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2202 /* Determine start and end address of compressed line bytes for
2204 base
= debug_info
->line
+ fh
->cbLineOffset
;
2205 if (j
!= (fh
->cpd
- 1))
2206 halt
= base
+ pr
[1].cbLineOffset
;
2208 halt
= base
+ fh
->cbLine
;
2209 base
+= pr
->cbLineOffset
;
2211 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2213 l
= adr
>> 2; /* in words */
2214 for (lineno
= pr
->lnLow
; base
< halt
;)
2216 count
= *base
& 0x0f;
2217 delta
= *base
++ >> 4;
2222 delta
= (base
[0] << 8) | base
[1];
2223 if (delta
>= 0x8000)
2227 lineno
+= delta
; /* first delta is 0 */
2229 /* Complain if the line table overflows. Could happen
2230 with corrupt binaries. */
2231 if (lt
->nitems
>= maxlines
)
2233 complaint (&symfile_complaints
,
2234 _("guessed size of linetable for %s incorrectly"),
2238 k
= add_line (lt
, lineno
, l
, k
);
2245 function_outside_compilation_unit_complaint (const char *arg1
)
2247 complaint (&symfile_complaints
,
2248 _("function `%s' appears to be defined "
2249 "outside of all compilation units"),
2253 /* Use the STORAGE_CLASS to compute which section the given symbol
2254 belongs to, and then records this new minimal symbol. */
2257 record_minimal_symbol (minimal_symbol_reader
&reader
,
2258 const char *name
, const CORE_ADDR address
,
2259 enum minimal_symbol_type ms_type
, int storage_class
,
2260 struct objfile
*objfile
)
2264 switch (storage_class
)
2267 section
= SECT_OFF_TEXT (objfile
);
2270 section
= SECT_OFF_DATA (objfile
);
2273 section
= SECT_OFF_BSS (objfile
);
2276 section
= get_section_index (objfile
, ".sdata");
2279 section
= get_section_index (objfile
, ".sbss");
2282 section
= get_section_index (objfile
, ".rdata");
2285 section
= get_section_index (objfile
, ".init");
2288 section
= get_section_index (objfile
, ".xdata");
2291 section
= get_section_index (objfile
, ".pdata");
2294 section
= get_section_index (objfile
, ".fini");
2297 section
= get_section_index (objfile
, ".rconst");
2301 section
= get_section_index (objfile
, ".tlsdata");
2306 section
= get_section_index (objfile
, ".tlsbss");
2310 /* This kind of symbol is not associated to a section. */
2314 reader
.record_with_info (name
, address
, ms_type
, section
);
2317 /* Master parsing procedure for first-pass reading of file symbols
2318 into a partial_symtab. */
2321 parse_partial_symbols (minimal_symbol_reader
&reader
,
2322 struct objfile
*objfile
)
2324 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2325 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2326 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2327 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2328 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2329 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2330 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2332 HDRR
*hdr
= &debug_info
->symbolic_header
;
2333 /* Running pointers */
2340 struct partial_symtab
*pst
;
2341 int textlow_not_set
= 1;
2343 /* List of current psymtab's include files. */
2344 const char **psymtab_include_list
;
2345 int includes_allocated
;
2348 struct pst_map
*fdr_to_pst
;
2349 /* Index within current psymtab dependency list. */
2350 struct partial_symtab
**dependency_list
;
2351 int dependencies_used
, dependencies_allocated
;
2353 enum language prev_language
;
2354 asection
*text_sect
;
2355 int relocatable
= 0;
2357 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2358 the shared libraries are prelinked at a high memory address.
2359 We have to adjust the start address of the object file for this case,
2360 by setting it to the start address of the first procedure in the file.
2361 But we should do no adjustments if we are debugging a .o file, where
2362 the text section (and fh->adr) really starts at zero. */
2363 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2364 if (text_sect
!= NULL
2365 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2368 extern_tab
= XOBNEWVEC (&objfile
->objfile_obstack
, EXTR
, hdr
->iextMax
);
2370 includes_allocated
= 30;
2372 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2373 sizeof (const char *));
2374 next_symbol_text_func
= mdebug_next_symbol_text
;
2376 dependencies_allocated
= 30;
2377 dependencies_used
= 0;
2379 (struct partial_symtab
**) alloca (dependencies_allocated
*
2380 sizeof (struct partial_symtab
*));
2382 set_last_source_file (NULL
);
2387 * Only parse the Local and External symbols, and the Relative FDR.
2388 * Fixup enough of the loader symtab to be able to use it.
2389 * Allocate space only for the file's portions we need to
2394 max_glevel
= MIN_GLEVEL
;
2396 /* Allocate the map FDR -> PST.
2397 Minor hack: -O3 images might claim some global data belongs
2398 to FDR -1. We`ll go along with that. */
2399 gdb::def_vector
<struct pst_map
> fdr_to_pst_holder (hdr
->ifdMax
+ 1);
2400 fdr_to_pst
= fdr_to_pst_holder
.data ();
2403 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2405 fdr_to_pst
[-1].pst
= pst
;
2409 /* Allocate the global pending list. */
2410 pending_list
= XOBNEWVEC (&objfile
->objfile_obstack
, mdebug_pending
*,
2412 memset (pending_list
, 0,
2413 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2415 /* Pass 0 over external syms: swap them in. */
2416 gdb::def_vector
<EXTR
> ext_block (hdr
->iextMax
);
2418 ext_out
= (char *) debug_info
->external_ext
;
2419 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2420 ext_in
= ext_block
.data ();
2421 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2422 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2424 /* Pass 1 over external syms: Presize and partition the list. */
2425 ext_in
= ext_block
.data ();
2426 ext_in_end
= ext_in
+ hdr
->iextMax
;
2427 for (; ext_in
< ext_in_end
; ext_in
++)
2429 /* See calls to complain below. */
2430 if (ext_in
->ifd
>= -1
2431 && ext_in
->ifd
< hdr
->ifdMax
2432 && ext_in
->asym
.iss
>= 0
2433 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2434 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2437 /* Pass 1.5 over files: partition out global symbol space. */
2439 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2441 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2442 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2443 fdr_to_pst
[f_idx
].n_globals
= 0;
2448 For ECOFF in ELF, we skip the creation of the minimal symbols.
2449 The ECOFF symbols should be a subset of the Elf symbols, and the
2450 section information of the elf symbols will be more accurate.
2451 FIXME! What about Irix 5's native linker?
2453 By default, Elf sections which don't exist in ECOFF
2454 get put in ECOFF's absolute section by the gnu linker.
2455 Since absolute sections don't get relocated, we
2456 end up calculating an address different from that of
2457 the symbol's minimal symbol (created earlier from the
2460 To fix this, either :
2461 1) don't create the duplicate symbol
2462 (assumes ECOFF symtab is a subset of the ELF symtab;
2463 assumes no side-effects result from ignoring ECOFF symbol)
2464 2) create it, only if lookup for existing symbol in ELF's minimal
2467 assumes no side-effects result from ignoring ECOFF symbol)
2468 3) create it, but lookup ELF's minimal symbol and use it's section
2469 during relocation, then modify "uniqify" phase to merge and
2470 eliminate the duplicate symbol
2471 (highly inefficient)
2473 I've implemented #1 here...
2474 Skip the creation of the minimal symbols based on the ECOFF
2477 /* Pass 2 over external syms: fill in external symbols. */
2478 ext_in
= ext_block
.data ();
2479 ext_in_end
= ext_in
+ hdr
->iextMax
;
2480 for (; ext_in
< ext_in_end
; ext_in
++)
2482 enum minimal_symbol_type ms_type
= mst_text
;
2483 CORE_ADDR svalue
= ext_in
->asym
.value
;
2485 /* The Irix 5 native tools seem to sometimes generate bogus
2486 external symbols. */
2487 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2489 complaint (&symfile_complaints
,
2490 _("bad ifd for external symbol: %d (max %ld)"),
2491 ext_in
->ifd
, hdr
->ifdMax
);
2494 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2496 complaint (&symfile_complaints
,
2497 _("bad iss for external symbol: %ld (max %ld)"),
2498 ext_in
->asym
.iss
, hdr
->issExtMax
);
2502 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2503 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2506 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2510 /* Pass 3 over files, over local syms: fill in static symbols. */
2511 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2513 /* Process ECOFF Symbol Types and Storage Classes. */
2514 switch (ext_in
->asym
.st
)
2517 /* Beginnning of Procedure */
2520 /* Load time only static procs */
2521 ms_type
= mst_file_text
;
2524 /* External symbol */
2525 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2527 /* The value of a common symbol is its size, not its address.
2531 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2535 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2539 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2549 /* On certain platforms, some extra label symbols can be
2550 generated by the linker. One possible usage for this kind
2551 of symbols is to represent the address of the begining of a
2552 given section. For instance, on Tru64 5.1, the address of
2553 the _ftext label is the start address of the .text section.
2555 The storage class of these symbols is usually directly
2556 related to the section to which the symbol refers. For
2557 instance, on Tru64 5.1, the storage class for the _fdata
2558 label is scData, refering to the .data section.
2560 It is actually possible that the section associated to the
2561 storage class of the label does not exist. On True64 5.1
2562 for instance, the libm.so shared library does not contain
2563 any .data section, although it contains a _fpdata label
2564 which storage class is scData... Since these symbols are
2565 usually useless for the debugger user anyway, we just
2566 discard these symbols. */
2568 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2570 if (objfile
->sect_index_text
== -1)
2573 ms_type
= mst_file_text
;
2575 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2577 if (objfile
->sect_index_data
== -1)
2580 ms_type
= mst_file_data
;
2582 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2584 if (objfile
->sect_index_bss
== -1)
2587 ms_type
= mst_file_bss
;
2589 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2591 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2593 if (sbss_sect_index
== -1)
2596 ms_type
= mst_file_bss
;
2603 /* The alpha has the section start addresses in stLocal symbols
2604 whose name starts with a `.'. Skip those but complain for all
2605 other stLocal symbols.
2606 Irix6 puts the section start addresses in stNil symbols, skip
2612 ms_type
= mst_unknown
;
2613 unknown_ext_complaint (name
);
2615 if (!ECOFF_IN_ELF (cur_bfd
))
2616 record_minimal_symbol (reader
, name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2620 /* Pass 3 over files, over local syms: fill in static symbols. */
2621 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2623 struct partial_symtab
*save_pst
;
2627 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2631 fdr_to_pst
[f_idx
].pst
= NULL
;
2635 /* Determine the start address for this object file from the
2636 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2640 if (relocatable
|| textlow
!= 0)
2641 textlow
+= ANOFFSET (objfile
->section_offsets
,
2642 SECT_OFF_TEXT (objfile
));
2646 pst
= start_psymtab_common (objfile
,
2649 objfile
->global_psymbols
,
2650 objfile
->static_psymbols
);
2651 pst
->read_symtab_private
= XOBNEW (&objfile
->objfile_obstack
, symloc
);
2652 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2655 FDR_IDX (pst
) = f_idx
;
2656 CUR_BFD (pst
) = cur_bfd
;
2657 DEBUG_SWAP (pst
) = debug_swap
;
2658 DEBUG_INFO (pst
) = debug_info
;
2659 PENDING_LIST (pst
) = pending_list
;
2661 /* The way to turn this into a symtab is to call... */
2662 pst
->read_symtab
= mdebug_read_symtab
;
2664 /* Set up language for the pst.
2665 The language from the FDR is used if it is unambigious (e.g. cfront
2666 with native cc and g++ will set the language to C).
2667 Otherwise we have to deduce the language from the filename.
2668 Native ecoff has every header file in a separate FDR, so
2669 deduce_language_from_filename will return language_unknown for
2670 a header file, which is not what we want.
2671 But the FDRs for the header files are after the FDR for the source
2672 file, so we can assign the language of the source file to the
2673 following header files. Then we save the language in the private
2674 pst data so that we can reuse it when building symtabs. */
2675 prev_language
= psymtab_language
;
2679 case langCplusplusV2
:
2680 psymtab_language
= language_cplus
;
2683 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2686 if (psymtab_language
== language_unknown
)
2687 psymtab_language
= prev_language
;
2688 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2690 pst
->texthigh
= pst
->textlow
;
2692 /* For stabs-in-ecoff files, the second symbol must be @stab.
2693 This symbol is emitted by mips-tfile to signal that the
2694 current object file uses encapsulated stabs instead of mips
2695 ecoff for local symbols. (It is the second symbol because
2696 the first symbol is the stFile used to signal the start of a
2698 processing_gcc_compilation
= 0;
2701 (*swap_sym_in
) (cur_bfd
,
2702 ((char *) debug_info
->external_sym
2703 + (fh
->isymBase
+ 1) * external_sym_size
),
2705 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2707 processing_gcc_compilation
= 2;
2710 if (processing_gcc_compilation
!= 0)
2712 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2715 const char *namestring
;
2717 (*swap_sym_in
) (cur_bfd
,
2718 (((char *) debug_info
->external_sym
)
2719 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2721 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2722 if (!ECOFF_IS_STAB (&sh
))
2724 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2729 if (sh
.st
== stStaticProc
)
2731 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2732 record_minimal_symbol (reader
, namestring
, sh
.value
,
2733 mst_file_text
, sh
.sc
,
2736 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2737 SECT_OFF_TEXT (objfile
));
2738 procaddr
= sh
.value
;
2740 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2741 (debug_info
->external_aux
2744 (*swap_sym_in
) (cur_bfd
,
2745 ((char *) debug_info
->external_sym
2746 + ((fh
->isymBase
+ isym
- 1)
2747 * external_sym_size
)),
2751 CORE_ADDR high
= procaddr
+ sh
.value
;
2753 /* Kludge for Irix 5.2 zero fh->adr. */
2755 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2756 pst
->textlow
= procaddr
;
2757 if (high
> pst
->texthigh
)
2758 pst
->texthigh
= high
;
2761 else if (sh
.st
== stStatic
)
2776 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2777 record_minimal_symbol (reader
, namestring
, sh
.value
,
2778 mst_file_data
, sh
.sc
,
2780 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2781 SECT_OFF_DATA (objfile
));
2785 /* FIXME! Shouldn't this use cases for bss,
2786 then have the default be abs? */
2787 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2788 record_minimal_symbol (reader
, namestring
, sh
.value
,
2789 mst_file_bss
, sh
.sc
,
2791 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2792 SECT_OFF_BSS (objfile
));
2798 /* Handle stabs continuation. */
2800 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2801 int len
= strlen (stabstring
);
2803 while (stabstring
[len
- 1] == '\\')
2806 char *stabstring1
= stabstring
;
2810 /* Ignore continuation char from 1st string. */
2813 /* Read next stabstring. */
2815 (*swap_sym_in
) (cur_bfd
,
2816 (((char *) debug_info
->external_sym
)
2817 + (fh
->isymBase
+ cur_sdx
)
2818 * external_sym_size
),
2820 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2821 len2
= strlen (stabstring2
);
2823 /* Concatinate stabstring2 with stabstring1. */
2825 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2827 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2830 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2831 strcpy (stabstring
, stabstring1
);
2833 strcpy (stabstring
+ len
, stabstring2
);
2841 /* Standard, external, non-debugger, symbols. */
2843 case N_TEXT
| N_EXT
:
2844 case N_NBTEXT
| N_EXT
:
2845 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2846 SECT_OFF_TEXT (objfile
));
2849 case N_DATA
| N_EXT
:
2850 case N_NBDATA
| N_EXT
:
2851 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2852 SECT_OFF_DATA (objfile
));
2857 case N_NBBSS
| N_EXT
:
2858 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2859 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2860 SECT_OFF_BSS (objfile
));
2867 /* Standard, local, non-debugger, symbols. */
2871 /* We need to be able to deal with both N_FN or
2872 N_TEXT, because we have no way of knowing
2873 whether the sys-supplied ld or GNU ld was used
2874 to make the executable. Sequents throw in
2875 another wrinkle -- they renumbered N_FN. */
2883 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2884 SECT_OFF_DATA (objfile
));
2887 case N_UNDF
| N_EXT
:
2888 continue; /* Just undefined, not COMMON. */
2893 /* Lots of symbol types we can just ignore. */
2900 /* Keep going . . . */
2903 * Special symbol types for GNU
2906 case N_INDR
| N_EXT
:
2908 case N_SETA
| N_EXT
:
2910 case N_SETT
| N_EXT
:
2912 case N_SETD
| N_EXT
:
2914 case N_SETB
| N_EXT
:
2924 static int prev_so_symnum
= -10;
2927 /* A zero value is probably an indication for the
2928 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2929 for zero, so don't relocate it. */
2932 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2933 textlow_not_set
= 1;
2935 textlow_not_set
= 0;
2937 if (prev_so_symnum
!= symnum
- 1)
2938 { /* Here if prev stab wasn't N_SO. */
2941 pst
= (struct partial_symtab
*) 0;
2943 dependencies_used
= 0;
2947 prev_so_symnum
= symnum
;
2949 /* End the current partial symtab and start a
2952 /* SET_NAMESTRING ();*/
2953 namestring
= stabstring
;
2955 /* Null name means end of .o file. Don't start a new
2957 if (*namestring
== '\000')
2960 /* Some compilers (including gcc) emit a pair of
2961 initial N_SOs. The first one is a directory name;
2962 the second the file name. If pst exists, is
2963 empty, and has a filename ending in '/', we assume
2964 the previous N_SO was a directory name. */
2965 p
= lbasename (namestring
);
2966 if (p
!= namestring
&& *p
== '\000')
2967 continue; /* Simply ignore directory
2970 /* Some other compilers (C++ ones in particular) emit
2971 useless SOs for non-existant .c files. We ignore
2972 all subsequent SOs that immediately follow the
2985 enum language tmp_language
;
2987 /* Mark down an include file in the current psymtab. */
2989 /* SET_NAMESTRING (); */
2990 namestring
= stabstring
;
2993 = deduce_language_from_filename (namestring
);
2995 /* Only change the psymtab's language if we've
2996 learned something useful (eg. tmp_language is not
2997 language_unknown). In addition, to match what
2998 start_subfile does, never change from C++ to
3000 if (tmp_language
!= language_unknown
3001 && (tmp_language
!= language_c
3002 || psymtab_language
!= language_cplus
))
3003 psymtab_language
= tmp_language
;
3005 /* In C++, one may expect the same filename to come
3006 round many times, when code is coming alternately
3007 from the main file and from inline functions in
3008 other files. So I check to see if this is a file
3009 we've seen before -- either the main source file,
3010 or a previously included file.
3012 This seems to be a lot of time to be spending on
3013 N_SOL, but things like "break c-exp.y:435" need to
3014 work (I suppose the psymtab_include_list could be
3015 hashed or put in a binary tree, if profiling shows
3016 this is a major hog). */
3017 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3023 for (i
= 0; i
< includes_used
; i
++)
3024 if (filename_cmp (namestring
,
3025 psymtab_include_list
[i
]) == 0)
3034 psymtab_include_list
[includes_used
++] = namestring
;
3035 if (includes_used
>= includes_allocated
)
3037 const char **orig
= psymtab_include_list
;
3039 psymtab_include_list
= (const char **)
3040 alloca ((includes_allocated
*= 2) *
3041 sizeof (const char *));
3042 memcpy (psymtab_include_list
, orig
,
3043 includes_used
* sizeof (const char *));
3047 case N_LSYM
: /* Typedef or automatic variable. */
3048 case N_STSYM
: /* Data seg var -- static */
3049 case N_LCSYM
: /* BSS " */
3050 case N_ROSYM
: /* Read-only data seg var -- static. */
3051 case N_NBSTS
: /* Gould nobase. */
3052 case N_NBLCS
: /* symbols. */
3054 case N_GSYM
: /* Global (extern) variable; can be
3055 data or bss (sigh FIXME). */
3057 /* Following may probably be ignored; I'll leave them here
3058 for now (until I do Pascal and Modula 2 extensions). */
3060 case N_PC
: /* I may or may not need this; I
3062 case N_M2C
: /* I suspect that I can ignore this
3064 case N_SCOPE
: /* Same. */
3066 /* SET_NAMESTRING (); */
3067 namestring
= stabstring
;
3068 p
= (char *) strchr (namestring
, ':');
3070 continue; /* Not a debugging symbol. */
3074 /* Main processing section for debugging symbols which
3075 the initial read through the symbol tables needs to
3076 worry about. If we reach this point, the symbol
3077 which we are considering is definitely one we are
3078 interested in. p must also contain the (valid)
3079 index into the namestring which indicates the
3080 debugging type symbol. */
3085 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3086 SECT_OFF_DATA (objfile
));
3088 if (gdbarch_static_transform_name_p (gdbarch
))
3089 namestring
= gdbarch_static_transform_name
3090 (gdbarch
, namestring
);
3092 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3093 VAR_DOMAIN
, LOC_STATIC
,
3094 &objfile
->static_psymbols
,
3096 psymtab_language
, objfile
);
3099 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3100 SECT_OFF_DATA (objfile
));
3101 /* The addresses in these entries are reported
3102 to be wrong. See the code that reads 'G's
3104 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3105 VAR_DOMAIN
, LOC_STATIC
,
3106 &objfile
->global_psymbols
,
3108 psymtab_language
, objfile
);
3112 /* When a 'T' entry is defining an anonymous enum, it
3113 may have a name which is the empty string, or a
3114 single space. Since they're not really defining a
3115 symbol, those shouldn't go in the partial symbol
3116 table. We do pick up the elements of such enums at
3117 'check_enum:', below. */
3118 if (p
>= namestring
+ 2
3119 || (p
== namestring
+ 1
3120 && namestring
[0] != ' '))
3122 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3123 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3124 &objfile
->static_psymbols
,
3125 0, psymtab_language
, objfile
);
3128 /* Also a typedef with the same name. */
3129 add_psymbol_to_list (namestring
,
3131 VAR_DOMAIN
, LOC_TYPEDEF
,
3132 &objfile
->static_psymbols
,
3133 0, psymtab_language
,
3140 if (p
!= namestring
) /* a name is there, not
3143 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3144 VAR_DOMAIN
, LOC_TYPEDEF
,
3145 &objfile
->static_psymbols
,
3146 0, psymtab_language
, objfile
);
3149 /* If this is an enumerated type, we need to add
3150 all the enum constants to the partial symbol
3151 table. This does not cover enums without names,
3152 e.g. "enum {a, b} c;" in C, but fortunately
3153 those are rare. There is no way for GDB to find
3154 those from the enum type without spending too
3155 much time on it. Thus to solve this problem,
3156 the compiler needs to put out the enum in a
3157 nameless type. GCC2 does this. */
3159 /* We are looking for something of the form
3160 <name> ":" ("t" | "T") [<number> "="] "e"
3161 {<constant> ":" <value> ","} ";". */
3163 /* Skip over the colon and the 't' or 'T'. */
3165 /* This type may be given a number. Also, numbers
3166 can come in pairs like (0,26). Skip over it. */
3167 while ((*p
>= '0' && *p
<= '9')
3168 || *p
== '(' || *p
== ',' || *p
== ')'
3174 /* The aix4 compiler emits extra crud before
3178 /* Skip over the type (?). */
3182 /* Skip over the colon. */
3186 /* We have found an enumerated type. */
3187 /* According to comments in read_enum_type
3188 a comma could end it instead of a semicolon.
3189 I don't know where that happens.
3191 while (*p
&& *p
!= ';' && *p
!= ',')
3195 /* Check for and handle cretinous dbx
3196 symbol name continuation! */
3197 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3198 p
= next_symbol_text (objfile
);
3200 /* Point to the character after the name
3201 of the enum constant. */
3202 for (q
= p
; *q
&& *q
!= ':'; q
++)
3204 /* Note that the value doesn't matter for
3205 enum constants in psymtabs, just in
3207 add_psymbol_to_list (p
, q
- p
, 1,
3208 VAR_DOMAIN
, LOC_CONST
,
3209 &objfile
->static_psymbols
,
3210 0, psymtab_language
,
3212 /* Point past the name. */
3214 /* Skip over the value. */
3215 while (*p
&& *p
!= ',')
3217 /* Advance past the comma. */
3224 /* Constant, e.g. from "const" in Pascal. */
3225 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3226 VAR_DOMAIN
, LOC_CONST
,
3227 &objfile
->static_psymbols
,
3228 0, psymtab_language
, objfile
);
3234 int name_len
= p
- namestring
;
3235 char *name
= (char *) xmalloc (name_len
+ 1);
3237 memcpy (name
, namestring
, name_len
);
3238 name
[name_len
] = '\0';
3239 function_outside_compilation_unit_complaint (name
);
3242 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3243 SECT_OFF_TEXT (objfile
));
3244 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3245 VAR_DOMAIN
, LOC_BLOCK
,
3246 &objfile
->static_psymbols
,
3248 psymtab_language
, objfile
);
3251 /* Global functions were ignored here, but now they
3252 are put into the global psymtab like one would
3253 expect. They're also in the minimal symbol
3258 int name_len
= p
- namestring
;
3259 char *name
= (char *) xmalloc (name_len
+ 1);
3261 memcpy (name
, namestring
, name_len
);
3262 name
[name_len
] = '\0';
3263 function_outside_compilation_unit_complaint (name
);
3266 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3267 SECT_OFF_TEXT (objfile
));
3268 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3269 VAR_DOMAIN
, LOC_BLOCK
,
3270 &objfile
->global_psymbols
,
3272 psymtab_language
, objfile
);
3275 /* Two things show up here (hopefully); static
3276 symbols of local scope (static used inside
3277 braces) or extensions of structure symbols. We
3292 case '#': /* For symbol identification (used
3297 /* It is a C++ nested symbol. We don't need to
3298 record it (I don't think); if we try to look up
3299 foo::bar::baz, then symbols for the symtab
3300 containing foo should get read in, I think. */
3301 /* Someone says sun cc puts out symbols like
3302 /foo/baz/maclib::/usr/local/bin/maclib,
3303 which would get here with a symbol type of ':'. */
3307 /* Unexpected symbol descriptor. The second and
3308 subsequent stabs of a continued stab can show up
3309 here. The question is whether they ever can
3310 mimic a normal stab--it would be nice if not,
3311 since we certainly don't want to spend the time
3312 searching to the end of every string looking for
3315 complaint (&symfile_complaints
,
3316 _("unknown symbol descriptor `%c'"), p
[1]);
3318 /* Ignore it; perhaps it is an extension that we don't
3327 /* Solaris 2 end of module, finish current partial
3328 symbol table. dbx_end_psymtab will set
3329 pst->texthigh to the proper value, which is
3330 necessary if a module compiled without
3331 debugging info follows this module. */
3333 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3335 pst
= (struct partial_symtab
*) 0;
3337 dependencies_used
= 0;
3342 if (sh
.value
> save_pst
->texthigh
)
3343 save_pst
->texthigh
= sh
.value
;
3348 case N_SSYM
: /* Claim: Structure or union
3349 element. Hopefully, I can
3351 case N_ENTRY
: /* Alternate entry point; can
3353 case N_MAIN
: /* Can definitely ignore this. */
3354 case N_CATCH
: /* These are GNU C++ extensions. */
3355 case N_EHDECL
: /* that can safely be ignored here. */
3365 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3366 case N_DEFD
: /* GNU Modula-2 */
3367 case N_ALIAS
: /* SunPro F77: alias name, ignore
3370 case N_OBJ
: /* Useless types from Solaris. */
3372 /* These symbols aren't interesting; don't worry about
3378 /* If we haven't found it yet, ignore it. It's
3379 probably some new type we don't know about yet. */
3380 complaint (&symfile_complaints
,
3381 _("unknown symbol type %s"),
3382 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3386 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3389 /* end - Handle continuation */
3394 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3397 enum address_class theclass
;
3398 CORE_ADDR minsym_value
;
3400 (*swap_sym_in
) (cur_bfd
,
3401 ((char *) debug_info
->external_sym
3402 + ((fh
->isymBase
+ cur_sdx
)
3403 * external_sym_size
)),
3406 if (ECOFF_IS_STAB (&sh
))
3412 /* Non absolute static symbols go into the minimal table. */
3413 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3414 || (sh
.index
== indexNil
3415 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3417 /* FIXME, premature? */
3422 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3424 minsym_value
= sh
.value
;
3430 /* The value of a stEnd symbol is the displacement from the
3431 corresponding start symbol value, do not relocate it. */
3433 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3434 SECT_OFF_TEXT (objfile
));
3441 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3442 SECT_OFF_DATA (objfile
));
3446 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3447 SECT_OFF_BSS (objfile
));
3458 reader
.record_with_info (name
, minsym_value
,
3460 SECT_OFF_TEXT (objfile
));
3465 /* Ignore all parameter symbol records. */
3466 if (sh
.index
>= hdr
->iauxMax
)
3468 /* Should not happen, but does when cross-compiling
3469 with the MIPS compiler. FIXME -- pull later. */
3470 index_complaint (name
);
3471 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3474 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3475 (debug_info
->external_aux
3479 if (new_sdx
<= cur_sdx
)
3481 /* This should not happen either... FIXME. */
3482 complaint (&symfile_complaints
,
3483 _("bad proc end in aux found from symbol %s"),
3485 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3488 /* For stProc symbol records, we need to check the
3489 storage class as well, as only (stProc, scText)
3490 entries represent "real" procedures - See the
3491 Compaq document titled "Object File / Symbol Table
3492 Format Specification" for more information. If the
3493 storage class is not scText, we discard the whole
3494 block of symbol records for this stProc. */
3495 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3498 /* Usually there is a local and a global stProc symbol
3499 for a function. This means that the function name
3500 has already been entered into the mimimal symbol table
3501 while processing the global symbols in pass 2 above.
3502 One notable exception is the PROGRAM name from
3503 f77 compiled executables, it is only put out as
3504 local stProc symbol, and a global MAIN__ stProc symbol
3505 points to it. It doesn't matter though, as gdb is
3506 still able to find the PROGRAM name via the partial
3507 symbol table, and the MAIN__ symbol via the minimal
3509 if (sh
.st
== stProc
)
3510 add_psymbol_to_list (name
, strlen (name
), 1,
3511 VAR_DOMAIN
, LOC_BLOCK
,
3512 &objfile
->global_psymbols
,
3513 sh
.value
, psymtab_language
, objfile
);
3515 add_psymbol_to_list (name
, strlen (name
), 1,
3516 VAR_DOMAIN
, LOC_BLOCK
,
3517 &objfile
->static_psymbols
,
3518 sh
.value
, psymtab_language
, objfile
);
3520 procaddr
= sh
.value
;
3523 (*swap_sym_in
) (cur_bfd
,
3524 ((char *) debug_info
->external_sym
3525 + ((fh
->isymBase
+ cur_sdx
- 1)
3526 * external_sym_size
)),
3531 /* Kludge for Irix 5.2 zero fh->adr. */
3533 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3534 pst
->textlow
= procaddr
;
3536 high
= procaddr
+ sh
.value
;
3537 if (high
> pst
->texthigh
)
3538 pst
->texthigh
= high
;
3541 case stStatic
: /* Variable */
3542 if (SC_IS_DATA (sh
.sc
))
3543 reader
.record_with_info (name
, minsym_value
,
3545 SECT_OFF_DATA (objfile
));
3547 reader
.record_with_info (name
, minsym_value
,
3549 SECT_OFF_BSS (objfile
));
3550 theclass
= LOC_STATIC
;
3553 case stIndirect
: /* Irix5 forward declaration */
3554 /* Skip forward declarations from Irix5 cc. */
3557 case stTypedef
: /* Typedef */
3558 /* Skip typedefs for forward declarations and opaque
3559 structs from alpha and mips cc. */
3560 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3562 theclass
= LOC_TYPEDEF
;
3565 case stConstant
: /* Constant decl */
3566 theclass
= LOC_CONST
;
3572 case stBlock
: /* { }, str, un, enum */
3573 /* Do not create a partial symbol for cc unnamed aggregates
3574 and gcc empty aggregates. */
3575 if ((sh
.sc
== scInfo
3576 || SC_IS_COMMON (sh
.sc
))
3578 && sh
.index
!= cur_sdx
+ 2)
3580 add_psymbol_to_list (name
, strlen (name
), 1,
3581 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3582 &objfile
->static_psymbols
,
3583 0, psymtab_language
, objfile
);
3585 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3587 /* Skip over the block. */
3589 if (new_sdx
<= cur_sdx
)
3591 /* This happens with the Ultrix kernel. */
3592 complaint (&symfile_complaints
,
3593 _("bad aux index at block symbol %s"), name
);
3594 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3599 case stFile
: /* File headers */
3600 case stLabel
: /* Labels */
3601 case stEnd
: /* Ends of files */
3604 case stLocal
: /* Local variables */
3605 /* Normally these are skipped because we skip over
3606 all blocks we see. However, these can occur
3607 as visible symbols in a .h file that contains code. */
3611 /* Both complaints are valid: one gives symbol name,
3612 the other the offending symbol type. */
3613 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3615 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3619 /* Use this gdb symbol. */
3620 add_psymbol_to_list (name
, strlen (name
), 1,
3621 VAR_DOMAIN
, theclass
,
3622 &objfile
->static_psymbols
,
3623 sh
.value
, psymtab_language
, objfile
);
3625 cur_sdx
++; /* Go to next file symbol. */
3628 /* Now do enter the external symbols. */
3629 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3630 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3631 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3632 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3633 for (; --cur_sdx
>= 0; ext_ptr
++)
3635 enum address_class theclass
;
3640 if (ext_ptr
->ifd
!= f_idx
)
3641 internal_error (__FILE__
, __LINE__
,
3642 _("failed internal consistency check"));
3643 psh
= &ext_ptr
->asym
;
3645 /* Do not add undefined symbols to the partial symbol table. */
3646 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3649 svalue
= psh
->value
;
3654 svalue
+= ANOFFSET (objfile
->section_offsets
,
3655 SECT_OFF_TEXT (objfile
));
3662 svalue
+= ANOFFSET (objfile
->section_offsets
,
3663 SECT_OFF_DATA (objfile
));
3667 svalue
+= ANOFFSET (objfile
->section_offsets
,
3668 SECT_OFF_BSS (objfile
));
3675 /* These are generated for static symbols in .o files,
3680 /* External procedure symbols have been entered
3681 into the minimal symbol table in pass 2 above.
3682 Ignore them, as parse_external will ignore them too. */
3685 theclass
= LOC_LABEL
;
3688 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3689 /* Pretend it's global. */
3692 /* Global common symbols are resolved by the runtime loader,
3694 if (SC_IS_COMMON (psh
->sc
))
3697 theclass
= LOC_STATIC
;
3700 name
= debug_info
->ssext
+ psh
->iss
;
3701 add_psymbol_to_list (name
, strlen (name
), 1,
3702 VAR_DOMAIN
, theclass
,
3703 &objfile
->global_psymbols
,
3704 svalue
, psymtab_language
, objfile
);
3708 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3709 empty and put on the free list. */
3710 fdr_to_pst
[f_idx
].pst
3711 = dbx_end_psymtab (objfile
, save_pst
,
3712 psymtab_include_list
, includes_used
,
3713 -1, save_pst
->texthigh
,
3714 dependency_list
, dependencies_used
,
3717 dependencies_used
= 0;
3719 /* The objfile has its functions reordered if this partial symbol
3720 table overlaps any other partial symbol table.
3721 We cannot assume a reordered objfile if a partial symbol table
3722 is contained within another partial symbol table, as partial symbol
3723 tables for include files with executable code are contained
3724 within the partial symbol table for the including source file,
3725 and we do not want to flag the objfile reordered for these cases.
3727 This strategy works well for Irix-5.2 shared libraries, but we
3728 might have to use a more elaborate (and slower) algorithm for
3730 save_pst
= fdr_to_pst
[f_idx
].pst
;
3731 if (save_pst
!= NULL
3732 && save_pst
->textlow
!= 0
3733 && !(objfile
->flags
& OBJF_REORDERED
))
3735 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3738 && save_pst
->textlow
>= pst
->textlow
3739 && save_pst
->textlow
< pst
->texthigh
3740 && save_pst
->texthigh
> pst
->texthigh
)
3742 objfile
->flags
|= OBJF_REORDERED
;
3749 /* Now scan the FDRs for dependencies. */
3750 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3752 fh
= f_idx
+ debug_info
->fdr
;
3753 pst
= fdr_to_pst
[f_idx
].pst
;
3755 if (pst
== (struct partial_symtab
*) NULL
)
3758 /* This should catch stabs-in-ecoff. */
3762 /* Skip the first file indirect entry as it is a self dependency for
3763 source files or a reverse .h -> .c dependency for header files. */
3764 pst
->number_of_dependencies
= 0;
3765 pst
->dependencies
= XOBNEWVEC (&objfile
->objfile_obstack
,
3766 partial_symtab
*, (fh
->crfd
- 1));
3767 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3771 (*swap_rfd_in
) (cur_bfd
,
3772 ((char *) debug_info
->external_rfd
3773 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3775 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3777 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3781 /* Skip self dependencies of header files. */
3785 /* Do not add to dependeny list if psymtab was empty. */
3786 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3788 pst
->dependencies
[pst
->number_of_dependencies
++]
3789 = fdr_to_pst
[rh
].pst
;
3793 /* Remove the dummy psymtab created for -O3 images above, if it is
3794 still empty, to enable the detection of stripped executables. */
3795 if (objfile
->psymtabs
->next
== NULL
3796 && objfile
->psymtabs
->number_of_dependencies
== 0
3797 && objfile
->psymtabs
->n_global_syms
== 0
3798 && objfile
->psymtabs
->n_static_syms
== 0)
3799 objfile
->psymtabs
= NULL
;
3802 /* If the current psymbol has an enumerated type, we need to add
3803 all the enum constants to the partial symbol table. */
3806 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3809 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3810 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3811 char *ext_sym
= ((char *) debug_info
->external_sym
3812 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3822 /* It is an enumerated type if the next symbol entry is a stMember
3823 and its auxiliary index is indexNil or its auxiliary entry
3824 is a plain btNil or btVoid.
3825 Alpha cc -migrate enums are recognized by a zero index and
3826 a zero symbol value.
3827 DU 4.0 cc enums are recognized by a member type of btEnum without
3828 qualifiers and a zero symbol value. */
3829 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3830 if (sh
.st
!= stMember
)
3833 if (sh
.index
== indexNil
3834 || (sh
.index
== 0 && svalue
== 0))
3836 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3837 &(debug_info
->external_aux
3838 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3840 if ((tir
.bt
!= btNil
3842 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3843 || tir
.tq0
!= tqNil
)
3855 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3856 if (sh
.st
!= stMember
)
3858 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3860 /* Note that the value doesn't matter for enum constants
3861 in psymtabs, just in symtabs. */
3862 add_psymbol_to_list (name
, strlen (name
), 1,
3863 VAR_DOMAIN
, LOC_CONST
,
3864 &objfile
->static_psymbols
,
3865 0, psymtab_language
, objfile
);
3866 ext_sym
+= external_sym_size
;
3870 /* Get the next symbol. OBJFILE is unused. */
3873 mdebug_next_symbol_text (struct objfile
*objfile
)
3878 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3879 ((char *) debug_info
->external_sym
3880 + ((cur_fdr
->isymBase
+ cur_sdx
)
3881 * debug_swap
->external_sym_size
)),
3883 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3886 /* Ancillary function to psymtab_to_symtab(). Does all the work
3887 for turning the partial symtab PST into a symtab, recurring
3888 first on all dependent psymtabs. The argument FILENAME is
3889 only passed so we can see in debug stack traces what file
3892 This function has a split personality, based on whether the
3893 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3894 The flow of control and even the memory allocation differs. FIXME. */
3897 psymtab_to_symtab_1 (struct objfile
*objfile
,
3898 struct partial_symtab
*pst
, const char *filename
)
3900 bfd_size_type external_sym_size
;
3901 bfd_size_type external_pdr_size
;
3902 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3903 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3905 struct compunit_symtab
*cust
= NULL
;
3907 struct linetable
*lines
;
3908 CORE_ADDR lowest_pdr_addr
= 0;
3909 int last_symtab_ended
= 0;
3910 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3916 /* Read in all partial symbtabs on which this one is dependent.
3917 NOTE that we do have circular dependencies, sigh. We solved
3918 that by setting pst->readin before this point. */
3920 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3921 if (!pst
->dependencies
[i
]->readin
)
3923 /* Inform about additional files to be read in. */
3926 fputs_filtered (" ", gdb_stdout
);
3928 fputs_filtered ("and ", gdb_stdout
);
3930 printf_filtered ("%s...",
3931 pst
->dependencies
[i
]->filename
);
3932 wrap_here (""); /* Flush output */
3933 gdb_flush (gdb_stdout
);
3935 /* We only pass the filename for debug purposes. */
3936 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3937 pst
->dependencies
[i
]->filename
);
3940 /* Do nothing if this is a dummy psymtab. */
3942 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3943 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3946 /* Now read the symbols for this symtab. */
3948 cur_bfd
= CUR_BFD (pst
);
3949 debug_swap
= DEBUG_SWAP (pst
);
3950 debug_info
= DEBUG_INFO (pst
);
3951 pending_list
= PENDING_LIST (pst
);
3952 external_sym_size
= debug_swap
->external_sym_size
;
3953 external_pdr_size
= debug_swap
->external_pdr_size
;
3954 swap_sym_in
= debug_swap
->swap_sym_in
;
3955 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3956 mdebugread_objfile
= objfile
;
3957 cur_fd
= FDR_IDX (pst
);
3958 fh
= ((cur_fd
== -1)
3960 : debug_info
->fdr
+ cur_fd
);
3963 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3964 processing_gcc_compilation
= 0;
3965 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3969 (*swap_sym_in
) (cur_bfd
,
3970 ((char *) debug_info
->external_sym
3971 + (fh
->isymBase
+ 1) * external_sym_size
),
3973 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3976 /* We indicate that this is a GCC compilation so that certain
3977 features will be enabled in stabsread/dbxread. */
3978 processing_gcc_compilation
= 2;
3982 if (processing_gcc_compilation
!= 0)
3984 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3986 /* This symbol table contains stabs-in-ecoff entries. */
3988 /* Parse local symbols first. */
3990 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
3992 mdebugread_objfile
= NULL
;
3995 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4001 (*swap_sym_in
) (cur_bfd
,
4002 (((char *) debug_info
->external_sym
)
4003 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4005 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4007 /* XXX This is a hack. It will go away! */
4008 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4010 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4011 enum language language
= PST_PRIVATE (pst
)->pst_language
;
4013 /* We should never get non N_STAB symbols here, but they
4014 should be harmless, so keep process_one_symbol from
4015 complaining about them. */
4016 if (type_code
& N_STAB
)
4018 /* If we found a trailing N_SO with no name, process
4019 it here instead of in process_one_symbol, so we
4020 can keep a handle to its symtab. The symtab
4021 would otherwise be ended twice, once in
4022 process_one_symbol, and once after this loop. */
4023 if (type_code
== N_SO
4024 && get_last_source_file ()
4025 && previous_stab_code
!= (unsigned char) N_SO
4028 valu
+= ANOFFSET (section_offsets
,
4029 SECT_OFF_TEXT (objfile
));
4030 previous_stab_code
= N_SO
;
4031 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4033 last_symtab_ended
= 1;
4037 last_symtab_ended
= 0;
4038 process_one_symbol (type_code
, 0, valu
, name
,
4039 section_offsets
, objfile
, language
);
4042 /* Similarly a hack. */
4043 else if (name
[0] == '#')
4045 process_one_symbol (N_SLINE
, 0, valu
, name
,
4046 section_offsets
, objfile
, language
);
4048 if (type_code
== N_FUN
)
4050 /* Make up special symbol to contain
4051 procedure specific info. */
4052 mdebug_extra_func_info
*e
4053 = OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
4054 mdebug_extra_func_info
);
4055 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4057 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4058 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4059 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4060 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4061 e
->pdr
.framereg
= -1;
4062 add_symbol_to_list (s
, &local_symbols
);
4065 else if (sh
.st
== stLabel
)
4067 if (sh
.index
== indexNil
)
4069 /* This is what the gcc2_compiled and __gnu_compiled_*
4070 show up as. So don't complain. */
4075 /* Handle encoded stab line number. */
4076 valu
+= ANOFFSET (section_offsets
,
4077 SECT_OFF_TEXT (objfile
));
4078 record_line (current_subfile
, sh
.index
,
4079 gdbarch_addr_bits_remove (gdbarch
, valu
));
4082 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4083 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4084 /* These are generated by gcc-2.x, do not complain. */
4087 complaint (&symfile_complaints
,
4088 _("unknown stabs symbol %s"), name
);
4091 if (! last_symtab_ended
)
4093 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4097 /* There used to be a call to sort_blocks here, but this should not
4098 be necessary for stabs symtabs. And as sort_blocks modifies the
4099 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4100 it did the wrong thing if the first procedure in a file was
4101 generated via asm statements. */
4103 /* Fill in procedure info next. */
4111 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4113 pdr_ptr
= ((char *) debug_info
->external_pdr
4114 + fh
->ipdFirst
* external_pdr_size
);
4115 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4116 pdr_in
= pr_block
.data ();
4119 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4121 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4123 /* Determine lowest PDR address, the PDRs are not always
4125 if (pdr_in
== pr_block
.data ())
4126 lowest_pdr_addr
= pdr_in
->adr
;
4127 else if (pdr_in
->adr
< lowest_pdr_addr
)
4128 lowest_pdr_addr
= pdr_in
->adr
;
4131 pdr_in
= pr_block
.data ();
4132 pdr_in_end
= pdr_in
+ fh
->cpd
;
4133 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4134 parse_procedure (pdr_in
, cust
, pst
);
4139 /* This symbol table contains ordinary ecoff entries. */
4147 cust
= new_symtab ("unknown", 0, objfile
);
4151 maxlines
= 2 * fh
->cline
;
4152 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4154 /* The proper language was already determined when building
4155 the psymtab, use it. */
4156 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4159 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4161 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4163 /* Get a new lexical context. */
4165 push_parse_stack ();
4166 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4167 top_stack
->cur_block
4168 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4169 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4170 BLOCK_END (top_stack
->cur_block
) = 0;
4171 top_stack
->blocktype
= stFile
;
4172 top_stack
->cur_type
= 0;
4173 top_stack
->procadr
= 0;
4174 top_stack
->numargs
= 0;
4175 found_ecoff_debugging_info
= 0;
4182 /* Parse local symbols first. */
4183 sym_ptr
= ((char *) debug_info
->external_sym
4184 + fh
->isymBase
* external_sym_size
);
4185 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4186 while (sym_ptr
< sym_end
)
4191 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4192 c
= parse_symbol (&sh
,
4193 debug_info
->external_aux
+ fh
->iauxBase
,
4194 sym_ptr
, fh
->fBigendian
,
4195 section_offsets
, objfile
);
4196 sym_ptr
+= c
* external_sym_size
;
4199 /* Linenumbers. At the end, check if we can save memory.
4200 parse_lines has to look ahead an arbitrary number of PDR
4201 structures, so we swap them all first. */
4209 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4211 pdr_ptr
= ((char *) debug_info
->external_pdr
4212 + fh
->ipdFirst
* external_pdr_size
);
4213 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4214 pdr_in
= pr_block
.data ();
4217 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4219 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4221 /* Determine lowest PDR address, the PDRs are not always
4223 if (pdr_in
== pr_block
.data ())
4224 lowest_pdr_addr
= pdr_in
->adr
;
4225 else if (pdr_in
->adr
< lowest_pdr_addr
)
4226 lowest_pdr_addr
= pdr_in
->adr
;
4229 parse_lines (fh
, pr_block
.data (), lines
, maxlines
,
4230 pst
, lowest_pdr_addr
);
4231 if (lines
->nitems
< fh
->cline
)
4232 lines
= shrink_linetable (lines
);
4234 /* Fill in procedure info next. */
4235 pdr_in
= pr_block
.data ();
4236 pdr_in_end
= pdr_in
+ fh
->cpd
;
4237 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4238 parse_procedure (pdr_in
, NULL
, pst
);
4242 size
= lines
->nitems
;
4245 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4246 = ((struct linetable
*)
4247 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4248 lines
, (sizeof (struct linetable
)
4249 + size
* sizeof (lines
->item
))));
4252 /* .. and our share of externals.
4253 XXX use the global list to speed up things here. How?
4254 FIXME, Maybe quit once we have found the right number of ext's? */
4255 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4256 top_stack
->cur_block
4257 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4259 top_stack
->blocktype
= stFile
;
4261 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4262 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4263 parse_external (ext_ptr
, fh
->fBigendian
,
4264 section_offsets
, objfile
);
4266 /* If there are undefined symbols, tell the user.
4267 The alpha has an undefined symbol for every symbol that is
4268 from a shared library, so tell the user only if verbose is on. */
4269 if (info_verbose
&& n_undef_symbols
)
4271 printf_filtered (_("File %s contains %d unresolved references:"),
4272 symtab_to_filename_for_display
4273 (COMPUNIT_FILETABS (cust
)),
4275 printf_filtered ("\n\t%4d variables\n\t%4d "
4276 "procedures\n\t%4d labels\n",
4277 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4278 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4283 sort_blocks (COMPUNIT_FILETABS (cust
));
4286 /* Now link the psymtab and the symtab. */
4287 pst
->compunit_symtab
= cust
;
4289 mdebugread_objfile
= NULL
;
4292 /* Ancillary parsing procedures. */
4294 /* Return 1 if the symbol pointed to by SH has a cross reference
4295 to an opaque aggregate type, else 0. */
4298 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4305 if (sh
->index
== indexNil
)
4308 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4309 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4310 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4314 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4315 if (rn
->rfd
== 0xfff)
4316 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4324 /* Lookup the type at relative index RN. Return it in TPP
4325 if found and in any event come up with its name PNAME.
4326 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4327 Return value says how many aux symbols we ate. */
4330 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4331 enum type_code type_code
,
4332 /* Use to alloc new type if none is found. */
4333 const char **pname
, int bigend
, const char *sym_name
)
4342 struct mdebug_pending
*pend
;
4346 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4348 /* Escape index means 'the next one'. */
4349 if (rn
->rfd
== 0xfff)
4352 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4359 /* mips cc uses a rf of -1 for opaque struct definitions.
4360 Set TYPE_STUB for these types so that check_typedef will
4361 resolve them if the struct gets defined in another compilation unit. */
4364 *pname
= "<undefined>";
4365 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4366 TYPE_STUB (*tpp
) = 1;
4370 /* mips cc uses an escaped rn->index of 0 for struct return types
4371 of procedures that were compiled without -g. These will always remain
4373 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4375 *pname
= "<undefined>";
4379 /* Find the relative file descriptor and the symbol in it. */
4380 fh
= get_rfd (fd
, rf
);
4381 xref_fd
= fh
- debug_info
->fdr
;
4383 if (rn
->index
>= fh
->csym
)
4385 /* File indirect entry is corrupt. */
4386 *pname
= "<illegal>";
4387 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4391 /* If we have processed this symbol then we left a forwarding
4392 pointer to the type in the pending list. If not, we`ll put
4393 it in a list of pending types, to be processed later when
4394 the file will be. In any event, we collect the name for the
4397 esh
= ((char *) debug_info
->external_sym
4398 + ((fh
->isymBase
+ rn
->index
)
4399 * debug_swap
->external_sym_size
));
4400 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4402 /* Make sure that this type of cross reference can be handled. */
4403 if ((sh
.sc
!= scInfo
4404 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4405 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4406 && sh
.st
!= stEnum
))
4407 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4409 /* File indirect entry is corrupt. */
4410 *pname
= "<illegal>";
4411 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4415 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4417 pend
= is_pending_symbol (fh
, esh
);
4422 /* We have not yet seen this type. */
4424 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4428 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4430 a) forward declarations of structs/unions/enums which are not
4431 defined in this compilation unit.
4432 For these the type will be void. This is a bad design decision
4433 as cross referencing across compilation units is impossible
4434 due to the missing name.
4435 b) forward declarations of structs/unions/enums/typedefs which
4436 are defined later in this file or in another file in the same
4437 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4438 Simply cross reference those again to get the true type.
4439 The forward references are not entered in the pending list and
4440 in the symbol table. */
4442 (*debug_swap
->swap_tir_in
) (bigend
,
4443 &(debug_info
->external_aux
4444 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4446 if (tir
.tq0
!= tqNil
)
4447 complaint (&symfile_complaints
,
4448 _("illegal tq0 in forward typedef for %s"), sym_name
);
4452 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4453 *pname
= "<undefined>";
4460 (debug_info
->external_aux
4461 + fh
->iauxBase
+ sh
.index
+ 1),
4462 tpp
, type_code
, pname
,
4463 fh
->fBigendian
, sym_name
);
4467 /* Follow a forward typedef. This might recursively
4468 call cross_ref till we get a non typedef'ed type.
4469 FIXME: This is not correct behaviour, but gdb currently
4470 cannot handle typedefs without type copying. Type
4471 copying is impossible as we might have mutual forward
4472 references between two files and the copied type would not
4473 get filled in when we later parse its definition. */
4474 *tpp
= parse_type (xref_fd
,
4475 debug_info
->external_aux
+ fh
->iauxBase
,
4479 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4480 add_pending (fh
, esh
, *tpp
);
4484 complaint (&symfile_complaints
,
4485 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4487 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4492 else if (sh
.st
== stTypedef
)
4494 /* Parse the type for a normal typedef. This might recursively call
4495 cross_ref till we get a non typedef'ed type.
4496 FIXME: This is not correct behaviour, but gdb currently
4497 cannot handle typedefs without type copying. But type copying is
4498 impossible as we might have mutual forward references between
4499 two files and the copied type would not get filled in when
4500 we later parse its definition. */
4501 *tpp
= parse_type (xref_fd
,
4502 debug_info
->external_aux
+ fh
->iauxBase
,
4506 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4510 /* Cross reference to a struct/union/enum which is defined
4511 in another file in the same compilation unit but that file
4512 has not been parsed yet.
4513 Initialize the type only, it will be filled in when
4514 it's definition is parsed. */
4515 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4517 add_pending (fh
, esh
, *tpp
);
4520 /* We used one auxent normally, two if we got a "next one" rf. */
4525 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4526 keeping the symtab sorted. */
4528 static struct symbol
*
4529 mylookup_symbol (const char *name
, const struct block
*block
,
4530 domain_enum domain
, enum address_class theclass
)
4532 struct block_iterator iter
;
4537 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4539 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4540 && SYMBOL_DOMAIN (sym
) == domain
4541 && SYMBOL_CLASS (sym
) == theclass
4542 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4546 block
= BLOCK_SUPERBLOCK (block
);
4548 return mylookup_symbol (name
, block
, domain
, theclass
);
4553 /* Add a new symbol S to a block B. */
4556 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4558 symbol_set_symtab (s
, symtab
);
4559 dict_add_symbol (BLOCK_DICT (b
), s
);
4562 /* Add a new block B to a symtab S. */
4565 add_block (struct block
*b
, struct symtab
*s
)
4567 /* Cast away "const", but that's ok because we're building the
4568 symtab and blockvector here. */
4569 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4571 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4572 (sizeof (struct blockvector
)
4573 + BLOCKVECTOR_NBLOCKS (bv
)
4574 * sizeof (bv
->block
)));
4575 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4576 SYMTAB_BLOCKVECTOR (s
) = bv
;
4578 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4581 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4582 MIPS' linenumber encoding might need more than one byte
4583 to describe it, LAST is used to detect these continuation lines.
4585 Combining lines with the same line number seems like a bad idea.
4586 E.g: There could be a line number entry with the same line number after the
4587 prologue and GDB should not ignore it (this is a better way to find
4588 a prologue than mips_skip_prologue).
4589 But due to the compressed line table format there are line number entries
4590 for the same line which are needed to bridge the gap to the next
4591 line number entry. These entries have a bogus address info with them
4592 and we are unable to tell them from intended duplicate line number
4594 This is another reason why -ggdb debugging format is preferable. */
4597 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4599 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4600 Change them to something sensible. */
4604 last
= -2; /* Make sure we record first line. */
4606 if (last
== lineno
) /* Skip continuation lines. */
4609 lt
->item
[lt
->nitems
].line
= lineno
;
4610 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4614 /* Sorting and reordering procedures. */
4616 /* Blocks with a smaller low bound should come first. */
4619 compare_blocks (const void *arg1
, const void *arg2
)
4622 struct block
**b1
= (struct block
**) arg1
;
4623 struct block
**b2
= (struct block
**) arg2
;
4625 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4627 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4631 /* Sort the blocks of a symtab S.
4632 Reorder the blocks in the blockvector by code-address,
4633 as required by some MI search routines. */
4636 sort_blocks (struct symtab
*s
)
4638 /* We have to cast away const here, but this is ok because we're
4639 constructing the blockvector in this code. */
4640 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4642 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4645 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4646 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4647 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4648 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4652 * This is very unfortunate: normally all functions are compiled in
4653 * the order they are found, but if the file is compiled -O3 things
4654 * are very different. It would be nice to find a reliable test
4655 * to detect -O3 images in advance.
4657 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4658 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4659 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4660 sizeof (struct block
*),
4665 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4667 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4668 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4669 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4670 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4673 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4674 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4676 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4677 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4678 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4679 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4683 /* Constructor/restructor/destructor procedures. */
4685 /* Allocate a new symtab for NAME. Needs an estimate of how many
4686 linenumbers MAXLINES we'll put in it. */
4688 static struct compunit_symtab
*
4689 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4691 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4692 struct symtab
*symtab
;
4693 struct blockvector
*bv
;
4696 add_compunit_symtab_to_objfile (cust
);
4697 symtab
= allocate_symtab (cust
, name
);
4699 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4700 lang
= compunit_language (cust
);
4702 /* All symtabs must have at least two blocks. */
4704 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4705 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4706 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4707 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4708 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4710 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4714 /* Allocate a new partial_symtab NAME. */
4716 static struct partial_symtab
*
4717 new_psymtab (const char *name
, struct objfile
*objfile
)
4719 struct partial_symtab
*psymtab
;
4721 psymtab
= allocate_psymtab (name
, objfile
);
4723 /* Keep a backpointer to the file's symbols. */
4725 psymtab
->read_symtab_private
4726 = OBSTACK_ZALLOC (&objfile
->objfile_obstack
, symloc
);
4727 CUR_BFD (psymtab
) = cur_bfd
;
4728 DEBUG_SWAP (psymtab
) = debug_swap
;
4729 DEBUG_INFO (psymtab
) = debug_info
;
4730 PENDING_LIST (psymtab
) = pending_list
;
4732 /* The way to turn this into a symtab is to call... */
4733 psymtab
->read_symtab
= mdebug_read_symtab
;
4738 /* Allocate a linetable array of the given SIZE. Since the struct
4739 already includes one item, we subtract one when calculating the
4740 proper size to allocate. */
4742 static struct linetable
*
4743 new_linetable (int size
)
4745 struct linetable
*l
;
4749 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4750 l
= (struct linetable
*) xmalloc (size
);
4755 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4756 I am not so sure about the 3.4 ones.
4758 Since the struct linetable already includes one item, we subtract one when
4759 calculating the proper size to allocate. */
4761 static struct linetable
*
4762 shrink_linetable (struct linetable
*lt
)
4764 return (struct linetable
*) xrealloc ((void *) lt
,
4765 (sizeof (struct linetable
)
4767 * sizeof (lt
->item
))));
4770 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4772 static struct blockvector
*
4773 new_bvect (int nblocks
)
4775 struct blockvector
*bv
;
4778 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4779 bv
= (struct blockvector
*) xzalloc (size
);
4781 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4786 /* Allocate and zero a new block of language LANGUAGE, and set its
4787 BLOCK_DICT. If function is non-zero, assume the block is
4788 associated to a function, and make sure that the symbols are stored
4789 linearly; otherwise, store them hashed. */
4791 static struct block
*
4792 new_block (enum block_type type
, enum language language
)
4794 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4795 allocate the block. Which, in turn, suggests that the block
4796 should be allocated on an obstack. */
4797 struct block
*retval
= XCNEW (struct block
);
4799 if (type
== FUNCTION_BLOCK
)
4800 BLOCK_DICT (retval
) = dict_create_linear_expandable (language
);
4802 BLOCK_DICT (retval
) = dict_create_hashed_expandable (language
);
4807 /* Create a new symbol with printname NAME. */
4809 static struct symbol
*
4810 new_symbol (const char *name
)
4812 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4814 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4815 &mdebugread_objfile
->objfile_obstack
);
4816 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4820 /* Create a new type with printname NAME. */
4822 static struct type
*
4823 new_type (char *name
)
4827 t
= alloc_type (mdebugread_objfile
);
4828 TYPE_NAME (t
) = name
;
4829 INIT_CPLUS_SPECIFIC (t
);
4833 /* Read ECOFF debugging information from a BFD section. This is
4834 called from elfread.c. It parses the section into a
4835 ecoff_debug_info struct, and then lets the rest of the file handle
4839 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4840 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4842 bfd
*abfd
= objfile
->obfd
;
4843 struct ecoff_debug_info
*info
;
4845 /* FIXME: It's not clear whether we should be getting minimal symbol
4846 information from .mdebug in an ELF file, or whether we will.
4847 Re-initialize the minimal symbol reader in case we do. */
4849 minimal_symbol_reader
reader (objfile
);
4851 info
= XOBNEW (&objfile
->objfile_obstack
, ecoff_debug_info
);
4853 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4854 error (_("Error reading ECOFF debugging information: %s"),
4855 bfd_errmsg (bfd_get_error ()));
4857 mdebug_build_psymtabs (reader
, objfile
, swap
, info
);
4863 _initialize_mdebugread (void)
4865 basic_type_data
= register_objfile_data ();
4867 mdebug_register_index
4868 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4869 mdebug_regparm_index
4870 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);