1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
8 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
11 This file is part of GDB.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 3 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
49 #include "gdb_obstack.h"
51 #include "stabsread.h"
52 #include "complaints.h"
54 #include "gdb_assert.h"
56 #include "dictionary.h"
57 #include "mdebugread.h"
59 #include "gdb_string.h"
64 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
66 #include "libaout.h" /* Private BFD a.out information. */
67 #include "aout/aout64.h"
68 #include "aout/stab_gnu.h" /* STABS information */
70 #include "expression.h"
72 extern void _initialize_mdebugread (void);
74 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
75 We use this define in order to know whether we should override a
76 symbol's ECOFF section with its ELF section. This is necessary in
77 case the symbol's ELF section could not be represented in ECOFF. */
78 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
79 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
82 /* We put a pointer to this structure in the read_symtab_private field
87 /* Index of the FDR that this psymtab represents. */
89 /* The BFD that the psymtab was created from. */
91 const struct ecoff_debug_swap
*debug_swap
;
92 struct ecoff_debug_info
*debug_info
;
93 struct mdebug_pending
**pending_list
;
94 /* Pointer to external symbols for this file. */
96 /* Size of extern_tab. */
98 enum language pst_language
;
101 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
102 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
103 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
104 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
105 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
106 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
108 #define SC_IS_TEXT(sc) ((sc) == scText \
109 || (sc) == scRConst \
112 #define SC_IS_DATA(sc) ((sc) == scData \
117 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
118 #define SC_IS_BSS(sc) ((sc) == scBss)
119 #define SC_IS_SBSS(sc) ((sc) == scSBss)
120 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
122 /* Various complaints about symbol reading that don't abort the process */
124 index_complaint (const char *arg1
)
126 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
130 unknown_ext_complaint (const char *arg1
)
132 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
136 basic_type_complaint (int arg1
, const char *arg2
)
138 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
143 bad_tag_guess_complaint (const char *arg1
)
145 complaint (&symfile_complaints
, _("guessed tag type of %s incorrectly"), arg1
);
149 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
151 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
156 unexpected_type_code_complaint (const char *arg1
)
158 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
161 /* Macros and extra defs */
163 /* Puns: hard to find whether -g was used and how */
165 #define MIN_GLEVEL GLEVEL_0
166 #define compare_glevel(a,b) \
167 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
168 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
170 /* Things that really are local to this module */
172 /* Remember what we deduced to be the source language of this psymtab. */
174 static enum language psymtab_language
= language_unknown
;
180 /* How to parse debugging information for CUR_BFD. */
182 static const struct ecoff_debug_swap
*debug_swap
;
184 /* Pointers to debugging information for CUR_BFD. */
186 static struct ecoff_debug_info
*debug_info
;
188 /* Pointer to current file decriptor record, and its index */
193 /* Index of current symbol */
197 /* Note how much "debuggable" this image is. We would like
198 to see at least one FDR with full symbols */
200 static int max_gdbinfo
;
201 static int max_glevel
;
203 /* When examining .o files, report on undefined symbols */
205 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
207 /* Pseudo symbol to use when putting stabs into the symbol table. */
209 static char stabs_symbol
[] = STABS_SYMBOL
;
211 /* Nonzero if we have seen ecoff debugging info for a file. */
213 static int found_ecoff_debugging_info
;
215 /* Forward declarations */
217 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
220 static void parse_partial_symbols (struct objfile
*);
222 static int has_opaque_xref (FDR
*, SYMR
*);
224 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
225 char **, int, char *);
227 static struct symbol
*new_symbol (char *);
229 static struct type
*new_type (char *);
231 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
233 static struct block
*new_block (enum block_type
);
235 static struct symtab
*new_symtab (char *, int, struct objfile
*);
237 static struct linetable
*new_linetable (int);
239 static struct blockvector
*new_bvect (int);
241 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
244 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
247 static void sort_blocks (struct symtab
*);
249 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
251 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
253 static void add_block (struct block
*, struct symtab
*);
255 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
257 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
259 static struct linetable
*shrink_linetable (struct linetable
*);
261 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
264 static char *mdebug_next_symbol_text (struct objfile
*);
266 /* Exported procedure: Builds a symtab from the PST partial one.
267 Restores the environment in effect when PST was created, delegates
268 most of the work to an ancillary procedure, and sorts
269 and reorders the symtab list at the end */
272 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
280 printf_filtered (_("Reading in symbols for %s..."), pst
->filename
);
281 gdb_flush (gdb_stdout
);
284 next_symbol_text_func
= mdebug_next_symbol_text
;
286 psymtab_to_symtab_1 (pst
, pst
->filename
);
288 /* Match with global symbols. This only needs to be done once,
289 after all of the symtabs and dependencies have been read in. */
290 scan_file_globals (pst
->objfile
);
293 printf_filtered (_("done.\n"));
296 /* File-level interface functions */
298 /* Find a file descriptor given its index RF relative to a file CF */
301 get_rfd (int cf
, int rf
)
307 fdrs
= debug_info
->fdr
;
309 /* Object files do not have the RFD table, all refs are absolute */
312 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
313 ((char *) debug_info
->external_rfd
315 * debug_swap
->external_rfd_size
)),
320 /* Return a safer print NAME for a file descriptor */
326 return "<stripped file>";
329 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
333 /* Read in and parse the symtab of the file OBJFILE. Symbols from
334 different sections are relocated via the SECTION_OFFSETS. */
337 mdebug_build_psymtabs (struct objfile
*objfile
,
338 const struct ecoff_debug_swap
*swap
,
339 struct ecoff_debug_info
*info
)
341 cur_bfd
= objfile
->obfd
;
345 stabsread_new_init ();
346 buildsym_new_init ();
347 free_header_files ();
348 init_header_files ();
350 /* Make sure all the FDR information is swapped in. */
351 if (info
->fdr
== (FDR
*) NULL
)
357 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
358 (info
->symbolic_header
.ifdMax
360 fdr_src
= info
->external_fdr
;
362 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
364 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
365 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
368 parse_partial_symbols (objfile
);
371 /* Check to make sure file was compiled with -g. If not, warn the
372 user of this limitation. */
373 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
375 if (max_gdbinfo
== 0)
376 printf_unfiltered (_("\n%s not compiled with -g, debugging support is limited.\n"),
378 printf_unfiltered (_("You should compile with -g2 or -g3 for best debugging support.\n"));
379 gdb_flush (gdb_stdout
);
384 /* Local utilities */
386 /* Map of FDR indexes to partial symtabs */
390 struct partial_symtab
*pst
; /* the psymtab proper */
391 long n_globals
; /* exported globals (external symbols) */
392 long globals_offset
; /* cumulative */
396 /* Utility stack, used to nest procedures and blocks properly.
397 It is a doubly linked list, to avoid too many alloc/free.
398 Since we might need it quite a few times it is NOT deallocated
401 static struct parse_stack
403 struct parse_stack
*next
, *prev
;
404 struct symtab
*cur_st
; /* Current symtab. */
405 struct block
*cur_block
; /* Block in it. */
407 /* What are we parsing. stFile, or stBlock are for files and
408 blocks. stProc or stStaticProc means we have seen the start of a
409 procedure, but not the start of the block within in. When we see
410 the start of that block, we change it to stNil, without pushing a
411 new block, i.e. stNil means both a procedure and a block. */
415 struct type
*cur_type
; /* Type we parse fields for. */
416 int cur_field
; /* Field number in cur_type. */
417 CORE_ADDR procadr
; /* Start addres of this procedure */
418 int numargs
; /* Its argument count */
421 *top_stack
; /* Top stack ptr */
424 /* Enter a new lexical context */
427 push_parse_stack (void)
429 struct parse_stack
*new;
431 /* Reuse frames if possible */
432 if (top_stack
&& top_stack
->prev
)
433 new = top_stack
->prev
;
435 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
436 /* Initialize new frame with previous content */
439 struct parse_stack
*prev
= new->prev
;
442 top_stack
->prev
= new;
444 new->next
= top_stack
;
449 /* Exit a lexical context */
452 pop_parse_stack (void)
457 top_stack
= top_stack
->next
;
461 /* Cross-references might be to things we haven't looked at
462 yet, e.g. type references. To avoid too many type
463 duplications we keep a quick fixup table, an array
464 of lists of references indexed by file descriptor */
466 struct mdebug_pending
468 struct mdebug_pending
*next
; /* link */
469 char *s
; /* the unswapped symbol */
470 struct type
*t
; /* its partial type descriptor */
474 /* The pending information is kept for an entire object file, and used
475 to be in the deprecated_sym_private field. I took it out when I
476 split mdebugread from mipsread, because this might not be the only
477 type of symbols read from an object file. Instead, we allocate the
478 pending information table when we create the partial symbols, and
479 we store a pointer to the single table in each psymtab. */
481 static struct mdebug_pending
**pending_list
;
483 /* Check whether we already saw symbol SH in file FH */
485 static struct mdebug_pending
*
486 is_pending_symbol (FDR
*fh
, char *sh
)
488 int f_idx
= fh
- debug_info
->fdr
;
489 struct mdebug_pending
*p
;
491 /* Linear search is ok, list is typically no more than 10 deep */
492 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
498 /* Add a new symbol SH of type T */
501 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
503 int f_idx
= fh
- debug_info
->fdr
;
504 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
506 /* Make sure we do not make duplicates */
509 p
= ((struct mdebug_pending
*)
510 obstack_alloc (¤t_objfile
->objfile_obstack
,
511 sizeof (struct mdebug_pending
)));
514 p
->next
= pending_list
[f_idx
];
515 pending_list
[f_idx
] = p
;
520 /* Parsing Routines proper. */
522 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
523 For blocks, procedures and types we open a new lexical context.
524 This is basically just a big switch on the symbol's type. Argument
525 AX is the base pointer of aux symbols for this file (fh->iauxBase).
526 EXT_SH points to the unswapped symbol, which is needed for struct,
527 union, etc., types; it is NULL for an EXTR. BIGEND says whether
528 aux symbols are big-endian or little-endian. Return count of
529 SYMR's handled (normally one). */
532 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
534 return gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
537 static const struct symbol_register_ops mdebug_register_funcs
= {
542 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
543 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
545 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
546 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
547 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
551 struct mdebug_pending
*pend
;
555 enum address_class
class;
557 long svalue
= sh
->value
;
560 if (ext_sh
== (char *) NULL
)
561 name
= debug_info
->ssext
+ sh
->iss
;
563 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
569 /* Do not relocate relative values.
570 The value of a stEnd symbol is the displacement from the
571 corresponding start symbol value.
572 The value of a stBlock symbol is the displacement from the
573 procedure address. */
574 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
575 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
582 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
586 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
595 case stGlobal
: /* external symbol, goes into global block */
597 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
599 s
= new_symbol (name
);
600 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
603 case stStatic
: /* static data, goes into current block. */
605 b
= top_stack
->cur_block
;
606 s
= new_symbol (name
);
607 if (SC_IS_COMMON (sh
->sc
))
609 /* It is a FORTRAN common block. At least for SGI Fortran the
610 address is not in the symbol; we need to fix it later in
611 scan_file_globals. */
612 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
613 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
614 global_sym_chain
[bucket
] = s
;
617 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
620 case stLocal
: /* local variable, goes into current block */
621 b
= top_stack
->cur_block
;
622 s
= new_symbol (name
);
623 SYMBOL_VALUE (s
) = svalue
;
624 if (sh
->sc
== scRegister
)
626 class = LOC_REGISTER
;
627 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
632 data
: /* Common code for symbols describing data */
633 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
634 SYMBOL_CLASS (s
) = class;
635 add_symbol (s
, top_stack
->cur_st
, b
);
637 /* Type could be missing if file is compiled without debugging info. */
638 if (SC_IS_UNDEF (sh
->sc
)
639 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
640 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
642 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
643 /* Value of a data symbol is its memory address */
646 case stParam
: /* arg to procedure, goes into current block */
648 found_ecoff_debugging_info
= 1;
649 top_stack
->numargs
++;
651 /* Special GNU C++ name. */
652 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
653 name
= "this"; /* FIXME, not alloc'd in obstack */
654 s
= new_symbol (name
);
656 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
657 SYMBOL_IS_ARGUMENT (s
) = 1;
661 /* Pass by value in register. */
662 SYMBOL_CLASS (s
) = LOC_REGISTER
;
663 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
666 /* Pass by reference on stack. */
667 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
670 /* Pass by reference in register. */
671 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
672 SYMBOL_REGISTER_OPS (s
) = &mdebug_register_funcs
;
675 /* Pass by value on stack. */
676 SYMBOL_CLASS (s
) = LOC_ARG
;
679 SYMBOL_VALUE (s
) = svalue
;
680 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
681 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
684 case stLabel
: /* label, goes into current block */
685 s
= new_symbol (name
);
686 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* so that it can be used */
687 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
688 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
689 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
690 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
693 case stProc
: /* Procedure, usually goes into global block */
694 case stStaticProc
: /* Static procedure, goes into current block */
695 /* For stProc symbol records, we need to check the storage class
696 as well, as only (stProc, scText) entries represent "real"
697 procedures - See the Compaq document titled "Object File /
698 Symbol Table Format Specification" for more information.
699 If the storage class is not scText, we discard the whole block
700 of symbol records for this stProc. */
701 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
703 char *ext_tsym
= ext_sh
;
704 int keep_counting
= 1;
707 while (keep_counting
)
709 ext_tsym
+= external_sym_size
;
710 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
720 complaint (&symfile_complaints
,
721 _("unknown symbol type 0x%x"), sh
->st
);
727 s
= new_symbol (name
);
728 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
729 SYMBOL_CLASS (s
) = LOC_BLOCK
;
730 /* Type of the return value */
731 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
732 t
= objfile_type (objfile
)->builtin_int
;
735 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
736 if (strcmp (name
, "malloc") == 0
737 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
739 /* I don't know why, but, at least under Alpha GNU/Linux,
740 when linking against a malloc without debugging
741 symbols, its read as a function returning void---this
742 is bad because it means we cannot call functions with
743 string arguments interactively; i.e., "call
744 printf("howdy\n")" would fail with the error message
745 "program has no memory available". To avoid this, we
746 patch up the type and make it void*
747 instead. (davidm@azstarnet.com)
749 t
= make_pointer_type (t
, NULL
);
752 b
= top_stack
->cur_block
;
753 if (sh
->st
== stProc
)
755 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
756 /* The next test should normally be true, but provides a
757 hook for nested functions (which we don't want to make
759 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
760 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
761 /* Irix 5 sometimes has duplicate names for the same
762 function. We want to add such names up at the global
763 level, not as a nested function. */
764 else if (sh
->value
== top_stack
->procadr
)
765 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
767 add_symbol (s
, top_stack
->cur_st
, b
);
769 /* Make a type for the procedure itself */
770 SYMBOL_TYPE (s
) = lookup_function_type (t
);
772 /* All functions in C++ have prototypes. For C we don't have enough
773 information in the debug info. */
774 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
775 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
777 /* Create and enter a new lexical context */
778 b
= new_block (FUNCTION_BLOCK
);
779 SYMBOL_BLOCK_VALUE (s
) = b
;
780 BLOCK_FUNCTION (b
) = s
;
781 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
782 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
783 add_block (b
, top_stack
->cur_st
);
785 /* Not if we only have partial info */
786 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
790 top_stack
->cur_block
= b
;
791 top_stack
->blocktype
= sh
->st
;
792 top_stack
->cur_type
= SYMBOL_TYPE (s
);
793 top_stack
->cur_field
= -1;
794 top_stack
->procadr
= sh
->value
;
795 top_stack
->numargs
= 0;
798 /* Beginning of code for structure, union, and enum definitions.
799 They all share a common set of local variables, defined here. */
801 enum type_code type_code
;
807 case stStruct
: /* Start a block defining a struct type */
808 type_code
= TYPE_CODE_STRUCT
;
809 goto structured_common
;
811 case stUnion
: /* Start a block defining a union type */
812 type_code
= TYPE_CODE_UNION
;
813 goto structured_common
;
815 case stEnum
: /* Start a block defining an enum type */
816 type_code
= TYPE_CODE_ENUM
;
817 goto structured_common
;
819 case stBlock
: /* Either a lexical block, or some type */
820 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
821 goto case_stBlock_code
; /* Lexical block */
823 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
825 /* Common code for handling struct, union, enum, and/or as-yet-
826 unknown-type blocks of info about structured data. `type_code'
827 has been set to the proper TYPE_CODE, if we know it. */
829 found_ecoff_debugging_info
= 1;
831 top_stack
->blocktype
= stBlock
;
833 /* First count the number of fields and the highest value. */
836 for (ext_tsym
= ext_sh
+ external_sym_size
;
838 ext_tsym
+= external_sym_size
)
842 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
847 /* C++ encodes class types as structures where there the
848 methods are encoded as stProc. The scope of stProc
849 symbols also ends with stEnd, thus creating a risk of
850 taking the wrong stEnd symbol record as the end of
851 the current struct, which would cause GDB to undercount
852 the real number of fields in this struct. To make sure
853 we really reached the right stEnd symbol record, we
854 check the associated name, and match it against the
855 struct name. Since method names are mangled while
856 the class name is not, there is no risk of having a
857 method whose name is identical to the class name
858 (in particular constructor method names are different
859 from the class name). There is therefore no risk that
860 this check stops the count on the StEnd of a method.
862 Also, assume that we're really at the end when tsym.iss
864 if (tsym
.iss
== issNull
865 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
871 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
873 /* If the type of the member is Nil (or Void),
874 without qualifiers, assume the tag is an
876 Alpha cc -migrate enums are recognized by a zero
877 index and a zero symbol value.
878 DU 4.0 cc enums are recognized by a member type of
879 btEnum without qualifiers and a zero symbol value. */
880 if (tsym
.index
== indexNil
881 || (tsym
.index
== 0 && sh
->value
== 0))
882 type_code
= TYPE_CODE_ENUM
;
885 (*debug_swap
->swap_tir_in
) (bigend
,
886 &ax
[tsym
.index
].a_ti
,
888 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
889 || (tir
.bt
== btEnum
&& sh
->value
== 0))
891 type_code
= TYPE_CODE_ENUM
;
895 if (tsym
.value
> max_value
)
896 max_value
= tsym
.value
;
905 /* This is a no-op; is it trying to tell us something
906 we should be checking? */
907 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
911 /* This is something like a struct within a
912 struct. Skip over the fields of the inner
913 struct. The -1 is because the for loop will
914 increment ext_tsym. */
915 ext_tsym
= ((char *) debug_info
->external_sym
916 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
917 * external_sym_size
));
923 /* mips cc puts out a typedef for struct x if it is not yet
924 defined when it encounters
925 struct y { struct x *xp; };
930 /* Irix5 cc puts out a stIndirect for struct x if it is not
931 yet defined when it encounters
932 struct y { struct x *xp; };
937 complaint (&symfile_complaints
,
938 _("declaration block contains unhandled symbol type %d"),
944 /* In an stBlock, there is no way to distinguish structs,
945 unions, and enums at this point. This is a bug in the
946 original design (that has been fixed with the recent
947 addition of the stStruct, stUnion, and stEnum symbol
948 types.) The way you can tell is if/when you see a variable
949 or field of that type. In that case the variable's type
950 (in the AUX table) says if the type is struct, union, or
951 enum, and points back to the stBlock here. So you can
952 patch the tag kind up later - but only if there actually is
953 a variable or field of that type.
955 So until we know for sure, we will guess at this point.
957 If the first member has index==indexNil or a void type,
958 assume we have an enumeration.
959 Otherwise, if there is more than one member, and all
960 the members have offset 0, assume we have a union.
961 Otherwise, assume we have a struct.
963 The heuristic could guess wrong in the case of of an
964 enumeration with no members or a union with one (or zero)
965 members, or when all except the last field of a struct have
966 width zero. These are uncommon and/or illegal situations,
967 and in any case guessing wrong probably doesn't matter
970 But if we later do find out we were wrong, we fixup the tag
971 kind. Members of an enumeration must be handled
972 differently from struct/union fields, and that is harder to
973 patch up, but luckily we shouldn't need to. (If there are
974 any enumeration members, we can tell for sure it's an enum
977 if (type_code
== TYPE_CODE_UNDEF
)
979 if (nfields
> 1 && max_value
== 0)
980 type_code
= TYPE_CODE_UNION
;
982 type_code
= TYPE_CODE_STRUCT
;
985 /* Create a new type or use the pending type. */
986 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
987 if (pend
== (struct mdebug_pending
*) NULL
)
990 add_pending (cur_fdr
, ext_sh
, t
);
995 /* Do not set the tag name if it is a compiler generated tag name
996 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
997 Alpha cc puts out an sh->iss of zero for those. */
998 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
999 TYPE_TAG_NAME (t
) = NULL
;
1001 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->objfile_obstack
,
1004 TYPE_CODE (t
) = type_code
;
1005 TYPE_LENGTH (t
) = sh
->value
;
1006 TYPE_NFIELDS (t
) = nfields
;
1007 TYPE_FIELDS (t
) = f
= ((struct field
*)
1009 nfields
* sizeof (struct field
)));
1011 if (type_code
== TYPE_CODE_ENUM
)
1013 int unsigned_enum
= 1;
1015 /* This is a non-empty enum. */
1017 /* DEC c89 has the number of enumerators in the sh.value field,
1018 not the type length, so we have to compensate for that
1019 incompatibility quirk.
1020 This might do the wrong thing for an enum with one or two
1021 enumerators and gcc -gcoff -fshort-enums, but these cases
1022 are hopefully rare enough.
1023 Alpha cc -migrate has a sh.value field of zero, we adjust
1025 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1026 || TYPE_LENGTH (t
) == 0)
1027 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1028 for (ext_tsym
= ext_sh
+ external_sym_size
;
1030 ext_tsym
+= external_sym_size
)
1033 struct symbol
*enum_sym
;
1035 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1037 if (tsym
.st
!= stMember
)
1040 SET_FIELD_BITPOS (*f
, tsym
.value
);
1041 FIELD_TYPE (*f
) = t
;
1042 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1043 FIELD_BITSIZE (*f
) = 0;
1045 enum_sym
= ((struct symbol
*)
1046 obstack_alloc (¤t_objfile
->objfile_obstack
,
1047 sizeof (struct symbol
)));
1048 memset (enum_sym
, 0, sizeof (struct symbol
));
1049 SYMBOL_SET_LINKAGE_NAME
1050 (enum_sym
, obsavestring (f
->name
, strlen (f
->name
),
1051 ¤t_objfile
->objfile_obstack
));
1052 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1053 SYMBOL_TYPE (enum_sym
) = t
;
1054 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1055 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1056 if (SYMBOL_VALUE (enum_sym
) < 0)
1058 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1060 /* Skip the stMembers that we've handled. */
1065 TYPE_UNSIGNED (t
) = 1;
1067 /* make this the current type */
1068 top_stack
->cur_type
= t
;
1069 top_stack
->cur_field
= 0;
1071 /* Do not create a symbol for alpha cc unnamed structs. */
1075 /* gcc puts out an empty struct for an opaque struct definitions,
1076 do not create a symbol for it either. */
1077 if (TYPE_NFIELDS (t
) == 0)
1083 s
= new_symbol (name
);
1084 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1085 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1086 SYMBOL_VALUE (s
) = 0;
1087 SYMBOL_TYPE (s
) = t
;
1088 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1091 /* End of local variables shared by struct, union, enum, and
1092 block (as yet unknown struct/union/enum) processing. */
1096 found_ecoff_debugging_info
= 1;
1097 /* beginnning of (code) block. Value of symbol
1098 is the displacement from procedure start */
1099 push_parse_stack ();
1101 /* Do not start a new block if this is the outermost block of a
1102 procedure. This allows the LOC_BLOCK symbol to point to the
1103 block with the local variables, so funcname::var works. */
1104 if (top_stack
->blocktype
== stProc
1105 || top_stack
->blocktype
== stStaticProc
)
1107 top_stack
->blocktype
= stNil
;
1111 top_stack
->blocktype
= stBlock
;
1112 b
= new_block (NON_FUNCTION_BLOCK
);
1113 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1114 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1115 top_stack
->cur_block
= b
;
1116 add_block (b
, top_stack
->cur_st
);
1119 case stEnd
: /* end (of anything) */
1120 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1122 /* Finished with type */
1123 top_stack
->cur_type
= 0;
1125 else if (sh
->sc
== scText
&&
1126 (top_stack
->blocktype
== stProc
||
1127 top_stack
->blocktype
== stStaticProc
))
1129 /* Finished with procedure */
1130 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1131 struct mdebug_extra_func_info
*e
;
1132 struct block
*b
= top_stack
->cur_block
;
1133 struct type
*ftype
= top_stack
->cur_type
;
1136 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1138 /* Make up special symbol to contain procedure specific info */
1139 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1140 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1141 SYMBOL_CLASS (s
) = LOC_CONST
;
1142 SYMBOL_TYPE (s
) = objfile_type (current_objfile
)->builtin_void
;
1143 e
= ((struct mdebug_extra_func_info
*)
1144 obstack_alloc (¤t_objfile
->objfile_obstack
,
1145 sizeof (struct mdebug_extra_func_info
)));
1146 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1147 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1148 e
->numargs
= top_stack
->numargs
;
1149 e
->pdr
.framereg
= -1;
1150 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1152 /* f77 emits proc-level with address bounds==[0,0],
1153 So look for such child blocks, and patch them. */
1154 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1156 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1157 if (BLOCK_SUPERBLOCK (b_bad
) == b
1158 && BLOCK_START (b_bad
) == top_stack
->procadr
1159 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1161 BLOCK_START (b_bad
) = BLOCK_START (b
);
1162 BLOCK_END (b_bad
) = BLOCK_END (b
);
1166 if (TYPE_NFIELDS (ftype
) <= 0)
1168 /* No parameter type information is recorded with the function's
1169 type. Set that from the type of the parameter symbols. */
1170 int nparams
= top_stack
->numargs
;
1176 struct dict_iterator iter
;
1177 TYPE_NFIELDS (ftype
) = nparams
;
1178 TYPE_FIELDS (ftype
) = (struct field
*)
1179 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1182 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1184 if (iparams
== nparams
)
1187 if (SYMBOL_IS_ARGUMENT (sym
))
1189 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1190 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1197 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1199 /* End of (code) block. The value of the symbol is the
1200 displacement from the procedure`s start address of the
1201 end of this block. */
1202 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1204 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1206 /* End of outermost block. Pop parse stack and ignore. The
1207 following stEnd of stProc will take care of the block. */
1210 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1212 /* End of file. Pop parse stack and ignore. Higher
1213 level code deals with this. */
1217 complaint (&symfile_complaints
,
1218 _("stEnd with storage class %d not handled"), sh
->sc
);
1220 pop_parse_stack (); /* restore previous lexical context */
1223 case stMember
: /* member of struct or union */
1224 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1225 FIELD_NAME (*f
) = name
;
1226 SET_FIELD_BITPOS (*f
, sh
->value
);
1228 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1229 FIELD_BITSIZE (*f
) = bitsize
;
1232 case stIndirect
: /* forward declaration on Irix5 */
1233 /* Forward declarations from Irix5 cc are handled by cross_ref,
1237 case stTypedef
: /* type definition */
1238 found_ecoff_debugging_info
= 1;
1240 /* Typedefs for forward declarations and opaque structs from alpha cc
1241 are handled by cross_ref, skip them. */
1245 /* Parse the type or use the pending type. */
1246 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1247 if (pend
== (struct mdebug_pending
*) NULL
)
1249 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1250 add_pending (cur_fdr
, ext_sh
, t
);
1255 /* mips cc puts out a typedef with the name of the struct for forward
1256 declarations. These should not go into the symbol table and
1257 TYPE_NAME should not be set for them.
1258 They can't be distinguished from an intentional typedef to
1259 the same name however:
1261 struct x { int ix; int jx; };
1265 struct xx {int ixx; int jxx; };
1266 generates a cross referencing stTypedef for x and xx.
1267 The user visible effect of this is that the type of a pointer
1268 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1269 The problem is fixed with alpha cc and Irix5 cc. */
1271 /* However if the typedef cross references to an opaque aggregate, it
1272 is safe to omit it from the symbol table. */
1274 if (has_opaque_xref (cur_fdr
, sh
))
1276 s
= new_symbol (name
);
1277 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1278 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1279 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1280 SYMBOL_TYPE (s
) = t
;
1281 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1283 /* Incomplete definitions of structs should not get a name. */
1284 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1285 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1286 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1287 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1289 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1290 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1292 /* If we are giving a name to a type such as "pointer to
1293 foo" or "function returning foo", we better not set
1294 the TYPE_NAME. If the program contains "typedef char
1295 *caddr_t;", we don't want all variables of type char
1296 * to print as caddr_t. This is not just a
1297 consequence of GDB's type management; CC and GCC (at
1298 least through version 2.4) both output variables of
1299 either type char * or caddr_t with the type
1300 refering to the stTypedef symbol for caddr_t. If a future
1301 compiler cleans this up it GDB is not ready for it
1302 yet, but if it becomes ready we somehow need to
1303 disable this check (without breaking the PCC/GCC2.4
1308 Fortunately, this check seems not to be necessary
1309 for anything except pointers or functions. */
1312 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1316 case stFile
: /* file name */
1317 push_parse_stack ();
1318 top_stack
->blocktype
= sh
->st
;
1321 /* I`ve never seen these for C */
1323 break; /* register relocation */
1325 break; /* forwarding address */
1327 break; /* constant */
1329 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1338 static const struct objfile_data
*basic_type_data
;
1340 static struct type
*
1341 basic_type (int bt
, struct objfile
*objfile
)
1343 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1344 struct type
**map_bt
= objfile_data (objfile
, basic_type_data
);
1352 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1353 btMax
, struct type
*);
1354 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1363 tp
= objfile_type (objfile
)->builtin_void
;
1367 tp
= init_type (TYPE_CODE_PTR
, 4, TYPE_FLAG_UNSIGNED
,
1369 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1373 tp
= init_type (TYPE_CODE_INT
, 1, 0,
1378 tp
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1379 "unsigned char", objfile
);
1383 tp
= init_type (TYPE_CODE_INT
, 2, 0,
1388 tp
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1389 "unsigned short", objfile
);
1393 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1398 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1399 "unsigned int", objfile
);
1403 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1408 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1409 "unsigned long", objfile
);
1413 tp
= init_type (TYPE_CODE_FLT
,
1414 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1419 tp
= init_type (TYPE_CODE_FLT
,
1420 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1425 tp
= init_type (TYPE_CODE_COMPLEX
,
1426 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1427 "complex", objfile
);
1428 TYPE_TARGET_TYPE (tp
) = basic_type (btFloat
, objfile
);
1432 tp
= init_type (TYPE_CODE_COMPLEX
,
1433 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1434 "double complex", objfile
);
1435 TYPE_TARGET_TYPE (tp
) = basic_type (btDouble
, objfile
);
1439 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1440 good? Would we be better off with TYPE_CODE_ERROR? Should
1441 TYPE_CODE_ERROR print things in hex if it knows the size? */
1442 tp
= init_type (TYPE_CODE_INT
,
1443 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1444 "fixed decimal", objfile
);
1448 tp
= init_type (TYPE_CODE_ERROR
,
1449 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1450 "floating decimal", objfile
);
1454 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1456 tp
= init_type (TYPE_CODE_STRING
, 1, 0,
1461 tp
= objfile_type (objfile
)->builtin_void
;
1465 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1470 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1471 "unsigned long", objfile
);
1475 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1476 "long long", objfile
);
1480 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1481 "unsigned long long", objfile
);
1485 tp
= init_type (TYPE_CODE_PTR
, 8, TYPE_FLAG_UNSIGNED
,
1487 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1491 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1496 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1497 "unsigned int", objfile
);
1509 /* Parse the type information provided in the raw AX entries for
1510 the symbol SH. Return the bitfield size in BS, in case.
1511 We must byte-swap the AX entries before we use them; BIGEND says whether
1512 they are big-endian or little-endian (from fh->fBigendian). */
1514 static struct type
*
1515 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1516 int bigend
, char *sym_name
)
1519 struct type
*tp
= 0;
1520 enum type_code type_code
= TYPE_CODE_UNDEF
;
1522 /* Handle undefined types, they have indexNil. */
1523 if (aux_index
== indexNil
)
1524 return basic_type (btInt
, current_objfile
);
1526 /* Handle corrupt aux indices. */
1527 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1529 index_complaint (sym_name
);
1530 return basic_type (btInt
, current_objfile
);
1534 /* Use aux as a type information record, map its basic type. */
1535 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1536 tp
= basic_type (t
->bt
, current_objfile
);
1539 /* Cannot use builtin types -- build our own */
1543 type_code
= TYPE_CODE_STRUCT
;
1546 type_code
= TYPE_CODE_UNION
;
1549 type_code
= TYPE_CODE_ENUM
;
1552 type_code
= TYPE_CODE_RANGE
;
1555 type_code
= TYPE_CODE_SET
;
1558 /* alpha cc -migrate uses this for typedefs. The true type will
1559 be obtained by crossreferencing below. */
1560 type_code
= TYPE_CODE_ERROR
;
1563 /* alpha cc uses this for typedefs. The true type will be
1564 obtained by crossreferencing below. */
1565 type_code
= TYPE_CODE_ERROR
;
1568 basic_type_complaint (t
->bt
, sym_name
);
1569 return basic_type (btInt
, current_objfile
);
1573 /* Move on to next aux */
1578 int width
= AUX_GET_WIDTH (bigend
, ax
);
1579 /* Inhibit core dumps if TIR is corrupted. */
1580 if (bs
== (int *) NULL
)
1582 /* Alpha cc -migrate encodes char and unsigned char types
1583 as short and unsigned short types with a field width of 8.
1584 Enum types also have a field width which we ignore for now. */
1585 if (t
->bt
== btShort
&& width
== 8)
1586 tp
= basic_type (btChar
, current_objfile
);
1587 else if (t
->bt
== btUShort
&& width
== 8)
1588 tp
= basic_type (btUChar
, current_objfile
);
1589 else if (t
->bt
== btEnum
)
1592 complaint (&symfile_complaints
, _("can't handle TIR fBitfield for %s"),
1600 /* A btIndirect entry cross references to an aux entry containing
1602 if (t
->bt
== btIndirect
)
1609 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1611 if (rn
->rfd
== 0xfff)
1613 rf
= AUX_GET_ISYM (bigend
, ax
);
1621 complaint (&symfile_complaints
,
1622 _("unable to cross ref btIndirect for %s"), sym_name
);
1623 return basic_type (btInt
, current_objfile
);
1625 xref_fh
= get_rfd (fd
, rf
);
1626 xref_fd
= xref_fh
- debug_info
->fdr
;
1627 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1628 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1631 /* All these types really point to some (common) MIPS type
1632 definition, and only the type-qualifiers fully identify
1633 them. We'll make the same effort at sharing. */
1634 if (t
->bt
== btStruct
||
1638 /* btSet (I think) implies that the name is a tag name, not a typedef
1639 name. This apparently is a MIPS extension for C sets. */
1644 /* Try to cross reference this type, build new type on failure. */
1645 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1646 if (tp
== (struct type
*) NULL
)
1647 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1649 /* DEC c89 produces cross references to qualified aggregate types,
1650 dereference them. */
1651 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1652 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1653 tp
= TYPE_TARGET_TYPE (tp
);
1655 /* Make sure that TYPE_CODE(tp) has an expected type code.
1656 Any type may be returned from cross_ref if file indirect entries
1658 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1659 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1660 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1662 unexpected_type_code_complaint (sym_name
);
1667 /* Usually, TYPE_CODE(tp) is already type_code. The main
1668 exception is if we guessed wrong re struct/union/enum.
1669 But for struct vs. union a wrong guess is harmless, so
1670 don't complain(). */
1671 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1672 && type_code
!= TYPE_CODE_ENUM
)
1673 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1674 && type_code
== TYPE_CODE_ENUM
))
1676 bad_tag_guess_complaint (sym_name
);
1679 if (TYPE_CODE (tp
) != type_code
)
1681 TYPE_CODE (tp
) = type_code
;
1684 /* Do not set the tag name if it is a compiler generated tag name
1685 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1686 if (name
[0] == '.' || name
[0] == '\0')
1687 TYPE_TAG_NAME (tp
) = NULL
;
1688 else if (TYPE_TAG_NAME (tp
) == NULL
1689 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1690 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1691 ¤t_objfile
->objfile_obstack
);
1695 /* All these types really point to some (common) MIPS type
1696 definition, and only the type-qualifiers fully identify
1697 them. We'll make the same effort at sharing.
1698 FIXME: We are not doing any guessing on range types. */
1699 if (t
->bt
== btRange
)
1703 /* Try to cross reference this type, build new type on failure. */
1704 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1705 if (tp
== (struct type
*) NULL
)
1706 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1708 /* Make sure that TYPE_CODE(tp) has an expected type code.
1709 Any type may be returned from cross_ref if file indirect entries
1711 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1713 unexpected_type_code_complaint (sym_name
);
1717 /* Usually, TYPE_CODE(tp) is already type_code. The main
1718 exception is if we guessed wrong re struct/union/enum. */
1719 if (TYPE_CODE (tp
) != type_code
)
1721 bad_tag_guess_complaint (sym_name
);
1722 TYPE_CODE (tp
) = type_code
;
1724 if (TYPE_NAME (tp
) == NULL
1725 || strcmp (TYPE_NAME (tp
), name
) != 0)
1726 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1727 ¤t_objfile
->objfile_obstack
);
1730 if (t
->bt
== btTypedef
)
1734 /* Try to cross reference this type, it should succeed. */
1735 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1736 if (tp
== (struct type
*) NULL
)
1738 complaint (&symfile_complaints
,
1739 _("unable to cross ref btTypedef for %s"), sym_name
);
1740 tp
= basic_type (btInt
, current_objfile
);
1744 /* Deal with range types */
1745 if (t
->bt
== btRange
)
1747 TYPE_NFIELDS (tp
) = 0;
1748 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1749 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1750 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1752 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1756 /* Parse all the type qualifiers now. If there are more
1757 than 6 the game will continue in the next aux */
1761 #define PARSE_TQ(tq) \
1762 if (t->tq != tqNil) \
1763 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1775 /* mips cc 2.x and gcc never put out continued aux entries. */
1779 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1783 /* Complain for illegal continuations due to corrupt aux entries. */
1785 complaint (&symfile_complaints
, _("illegal TIR continued for %s"), sym_name
);
1790 /* Make up a complex type from a basic one. Type is passed by
1791 reference in TPP and side-effected as necessary. The type
1792 qualifier TQ says how to handle the aux symbols at AX for
1793 the symbol SX we are currently analyzing. BIGEND says whether
1794 aux symbols are big-endian or little-endian.
1795 Returns the number of aux symbols we parsed. */
1798 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1804 /* Used in array processing */
1815 t
= lookup_pointer_type (*tpp
);
1820 t
= lookup_function_type (*tpp
);
1827 /* Determine and record the domain type (type of index) */
1828 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1834 rf
= AUX_GET_ISYM (bigend
, ax
);
1837 fh
= get_rfd (fd
, rf
);
1839 indx
= parse_type (fh
- debug_info
->fdr
,
1840 debug_info
->external_aux
+ fh
->iauxBase
,
1841 id
, (int *) NULL
, bigend
, sym_name
);
1843 /* The bounds type should be an integer type, but might be anything
1844 else due to corrupt aux entries. */
1845 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1847 complaint (&symfile_complaints
,
1848 _("illegal array index type for %s, assuming int"), sym_name
);
1849 indx
= objfile_type (current_objfile
)->builtin_int
;
1852 /* Get the bounds, and create the array type. */
1854 lower
= AUX_GET_DNLOW (bigend
, ax
);
1856 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1858 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1860 range
= create_range_type ((struct type
*) NULL
, indx
,
1863 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1865 /* We used to fill in the supplied array element bitsize
1866 here if the TYPE_LENGTH of the target type was zero.
1867 This happens for a `pointer to an array of anonymous structs',
1868 but in this case the array element bitsize is also zero,
1869 so nothing is gained.
1870 And we used to check the TYPE_LENGTH of the target type against
1871 the supplied array element bitsize.
1872 gcc causes a mismatch for `pointer to array of object',
1873 since the sdb directives it uses do not have a way of
1874 specifying the bitsize, but it does no harm (the
1875 TYPE_LENGTH should be correct) and we should be able to
1876 ignore the erroneous bitsize from the auxiliary entry safely.
1877 dbx seems to ignore it too. */
1879 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1880 if (TYPE_LENGTH (*tpp
) == 0)
1881 TYPE_TARGET_STUB (t
) = 1;
1887 /* Volatile -- currently ignored */
1891 /* Const -- currently ignored */
1895 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1901 /* Parse a procedure descriptor record PR. Note that the procedure is
1902 parsed _after_ the local symbols, now we just insert the extra
1903 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1904 already been placed in the procedure's main block. Note also that
1905 images that have been partially stripped (ld -x) have been deprived
1906 of local symbols, and we have to cope with them here. FIRST_OFF is
1907 the offset of the first procedure for this FDR; we adjust the
1908 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1909 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1910 in question, or NULL to use top_stack->cur_block. */
1912 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1915 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1916 struct partial_symtab
*pst
)
1918 struct symbol
*s
, *i
;
1922 /* Simple rule to find files linked "-x" */
1923 if (cur_fdr
->rss
== -1)
1927 /* Static procedure at address pr->adr. Sigh. */
1928 /* FIXME-32x64. assuming pr->adr fits in long. */
1929 complaint (&symfile_complaints
,
1930 _("can't handle PDR for static proc at 0x%lx"),
1931 (unsigned long) pr
->adr
);
1939 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1940 ((char *) debug_info
->external_ext
1942 * debug_swap
->external_ext_size
)),
1944 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1952 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1953 ((char *) debug_info
->external_sym
1954 + ((cur_fdr
->isymBase
+ pr
->isym
)
1955 * debug_swap
->external_sym_size
)),
1957 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1960 if (search_symtab
!= NULL
)
1963 /* This loses both in the case mentioned (want a static, find a global),
1964 but also if we are looking up a non-mangled name which happens to
1965 match the name of a mangled function. */
1966 /* We have to save the cur_fdr across the call to lookup_symbol.
1967 If the pdr is for a static function and if a global function with
1968 the same name exists, lookup_symbol will eventually read in the symtab
1969 for the global function and clobber cur_fdr. */
1970 FDR
*save_cur_fdr
= cur_fdr
;
1971 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1972 cur_fdr
= save_cur_fdr
;
1976 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1982 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1983 VAR_DOMAIN
, LOC_BLOCK
);
1987 b
= SYMBOL_BLOCK_VALUE (s
);
1991 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
1995 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1996 s
= new_symbol (sh_name
);
1997 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1998 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1999 /* Donno its type, hope int is ok */
2001 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2002 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2003 /* Wont have symbols for this one */
2005 SYMBOL_BLOCK_VALUE (s
) = b
;
2006 BLOCK_FUNCTION (b
) = s
;
2007 BLOCK_START (b
) = pr
->adr
;
2008 /* BOUND used to be the end of procedure's text, but the
2009 argument is no longer passed in. */
2010 BLOCK_END (b
) = bound
;
2011 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2012 add_block (b
, top_stack
->cur_st
);
2016 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2020 struct mdebug_extra_func_info
*e
;
2022 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2025 /* GDB expects the absolute function start address for the
2026 procedure descriptor in e->pdr.adr.
2027 As the address in the procedure descriptor is usually relative,
2028 we would have to relocate e->pdr.adr with cur_fdr->adr and
2029 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2030 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2031 in shared libraries on some systems, and on other systems
2032 e->pdr.adr is sometimes offset by a bogus value.
2033 To work around these problems, we replace e->pdr.adr with
2034 the start address of the function. */
2035 e
->pdr
.adr
= BLOCK_START (b
);
2038 /* It would be reasonable that functions that have been compiled
2039 without debugging info have a btNil type for their return value,
2040 and functions that are void and are compiled with debugging info
2042 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2043 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2045 The glevel field in cur_fdr could be used to determine the presence
2046 of debugging info, but GCC doesn't always pass the -g switch settings
2047 to the assembler and GAS doesn't set the glevel field from the -g switch
2049 To work around these problems, the return value type of a TYPE_CODE_VOID
2050 function is adjusted accordingly if no debugging info was found in the
2051 compilation unit. */
2053 if (processing_gcc_compilation
== 0
2054 && found_ecoff_debugging_info
== 0
2055 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2056 SYMBOL_TYPE (s
) = objfile_type (pst
->objfile
)->nodebug_text_symbol
;
2059 /* Parse the external symbol ES. Just call parse_symbol() after
2060 making sure we know where the aux are for it.
2061 BIGEND says whether aux entries are big-endian or little-endian.
2063 This routine clobbers top_stack->cur_block and ->cur_st. */
2065 static void parse_external (EXTR
*, int, struct section_offsets
*,
2069 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2070 struct objfile
*objfile
)
2074 if (es
->ifd
!= ifdNil
)
2077 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2078 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2082 cur_fdr
= debug_info
->fdr
;
2086 /* Reading .o files */
2087 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2090 switch (es
->asym
.st
)
2093 /* These are generated for static symbols in .o files,
2114 /* FIXME: Turn this into a complaint? */
2116 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2117 what
, debug_info
->ssext
+ es
->asym
.iss
,
2118 fdr_name (cur_fdr
));
2122 switch (es
->asym
.st
)
2126 /* There is no need to parse the external procedure symbols.
2127 If they are from objects compiled without -g, their index will
2128 be indexNil, and the symbol definition from the minimal symbol
2129 is preferrable (yielding a function returning int instead of int).
2130 If the index points to a local procedure symbol, the local
2131 symbol already provides the correct type.
2132 Note that the index of the external procedure symbol points
2133 to the local procedure symbol in the local symbol table, and
2134 _not_ to the auxiliary symbol info. */
2138 /* Global common symbols are resolved by the runtime loader,
2140 if (SC_IS_COMMON (es
->asym
.sc
))
2143 /* Note that the case of a symbol with indexNil must be handled
2144 anyways by parse_symbol(). */
2145 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2152 /* Parse the line number info for file descriptor FH into
2153 GDB's linetable LT. MIPS' encoding requires a little bit
2154 of magic to get things out. Note also that MIPS' line
2155 numbers can go back and forth, apparently we can live
2156 with that and do not need to reorder our linetables */
2158 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2159 struct partial_symtab
*, CORE_ADDR
);
2162 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2163 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2165 unsigned char *base
;
2167 int delta
, count
, lineno
= 0;
2169 if (fh
->cbLine
== 0)
2172 /* Scan by procedure descriptors */
2174 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2178 unsigned char *halt
;
2180 /* No code for this one */
2181 if (pr
->iline
== ilineNil
||
2182 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2185 /* Determine start and end address of compressed line bytes for
2187 base
= debug_info
->line
+ fh
->cbLineOffset
;
2188 if (j
!= (fh
->cpd
- 1))
2189 halt
= base
+ pr
[1].cbLineOffset
;
2191 halt
= base
+ fh
->cbLine
;
2192 base
+= pr
->cbLineOffset
;
2194 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2196 l
= adr
>> 2; /* in words */
2197 for (lineno
= pr
->lnLow
; base
< halt
;)
2199 count
= *base
& 0x0f;
2200 delta
= *base
++ >> 4;
2205 delta
= (base
[0] << 8) | base
[1];
2206 if (delta
>= 0x8000)
2210 lineno
+= delta
; /* first delta is 0 */
2212 /* Complain if the line table overflows. Could happen
2213 with corrupt binaries. */
2214 if (lt
->nitems
>= maxlines
)
2216 complaint (&symfile_complaints
,
2217 _("guessed size of linetable for %s incorrectly"),
2221 k
= add_line (lt
, lineno
, l
, k
);
2228 function_outside_compilation_unit_complaint (const char *arg1
)
2230 complaint (&symfile_complaints
,
2231 _("function `%s' appears to be defined outside of all compilation units"),
2235 /* Use the STORAGE_CLASS to compute which section the given symbol
2236 belongs to, and then records this new minimal symbol. */
2239 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2240 enum minimal_symbol_type ms_type
, int storage_class
,
2241 struct objfile
*objfile
)
2244 asection
*bfd_section
;
2246 switch (storage_class
)
2249 section
= SECT_OFF_TEXT (objfile
);
2250 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".text");
2253 section
= SECT_OFF_DATA (objfile
);
2254 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".data");
2257 section
= SECT_OFF_BSS (objfile
);
2258 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".bss");
2261 section
= get_section_index (objfile
, ".sdata");
2262 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sdata");
2265 section
= get_section_index (objfile
, ".sbss");
2266 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sbss");
2269 section
= get_section_index (objfile
, ".rdata");
2270 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rdata");
2273 section
= get_section_index (objfile
, ".init");
2274 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".init");
2277 section
= get_section_index (objfile
, ".xdata");
2278 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".xdata");
2281 section
= get_section_index (objfile
, ".pdata");
2282 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".pdata");
2285 section
= get_section_index (objfile
, ".fini");
2286 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".fini");
2289 section
= get_section_index (objfile
, ".rconst");
2290 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rconst");
2294 section
= get_section_index (objfile
, ".tlsdata");
2295 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsdata");
2300 section
= get_section_index (objfile
, ".tlsbss");
2301 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsbss");
2305 /* This kind of symbol is not associated to a section. */
2310 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2311 section
, bfd_section
, objfile
);
2314 /* Master parsing procedure for first-pass reading of file symbols
2315 into a partial_symtab. */
2318 parse_partial_symbols (struct objfile
*objfile
)
2320 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2321 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2322 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2323 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2324 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2325 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2326 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2328 HDRR
*hdr
= &debug_info
->symbolic_header
;
2329 /* Running pointers */
2337 struct partial_symtab
*pst
;
2338 int textlow_not_set
= 1;
2339 int past_first_source_file
= 0;
2341 /* List of current psymtab's include files */
2342 char **psymtab_include_list
;
2343 int includes_allocated
;
2346 struct pst_map
*fdr_to_pst
;
2347 /* Index within current psymtab dependency list */
2348 struct partial_symtab
**dependency_list
;
2349 int dependencies_used
, dependencies_allocated
;
2350 struct cleanup
*old_chain
;
2352 enum language prev_language
;
2353 asection
*text_sect
;
2354 int relocatable
= 0;
2356 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2357 the shared libraries are prelinked at a high memory address.
2358 We have to adjust the start address of the object file for this case,
2359 by setting it to the start address of the first procedure in the file.
2360 But we should do no adjustments if we are debugging a .o file, where
2361 the text section (and fh->adr) really starts at zero. */
2362 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2363 if (text_sect
!= NULL
2364 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2367 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2368 sizeof (EXTR
) * hdr
->iextMax
);
2370 includes_allocated
= 30;
2372 psymtab_include_list
= (char **) alloca (includes_allocated
*
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 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 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2400 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2403 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2404 fdr_to_pst
[-1].pst
= pst
;
2408 /* Allocate the global pending list. */
2410 ((struct mdebug_pending
**)
2411 obstack_alloc (&objfile
->objfile_obstack
,
2412 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2413 memset (pending_list
, 0,
2414 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2416 /* Pass 0 over external syms: swap them in. */
2417 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2418 make_cleanup (xfree
, ext_block
);
2420 ext_out
= (char *) debug_info
->external_ext
;
2421 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2423 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2424 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2426 /* Pass 1 over external syms: Presize and partition the list */
2428 ext_in_end
= ext_in
+ hdr
->iextMax
;
2429 for (; ext_in
< ext_in_end
; ext_in
++)
2431 /* See calls to complain below. */
2432 if (ext_in
->ifd
>= -1
2433 && ext_in
->ifd
< hdr
->ifdMax
2434 && ext_in
->asym
.iss
>= 0
2435 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2436 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2439 /* Pass 1.5 over files: partition out global symbol space */
2441 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2443 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2444 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2445 fdr_to_pst
[f_idx
].n_globals
= 0;
2450 For ECOFF in ELF, we skip the creation of the minimal symbols.
2451 The ECOFF symbols should be a subset of the Elf symbols, and the
2452 section information of the elf symbols will be more accurate.
2453 FIXME! What about Irix 5's native linker?
2455 By default, Elf sections which don't exist in ECOFF
2456 get put in ECOFF's absolute section by the gnu linker.
2457 Since absolute sections don't get relocated, we
2458 end up calculating an address different from that of
2459 the symbol's minimal symbol (created earlier from the
2462 To fix this, either :
2463 1) don't create the duplicate symbol
2464 (assumes ECOFF symtab is a subset of the ELF symtab;
2465 assumes no side-effects result from ignoring ECOFF symbol)
2466 2) create it, only if lookup for existing symbol in ELF's minimal
2469 assumes no side-effects result from ignoring ECOFF symbol)
2470 3) create it, but lookup ELF's minimal symbol and use it's section
2471 during relocation, then modify "uniqify" phase to merge and
2472 eliminate the duplicate symbol
2473 (highly inefficient)
2475 I've implemented #1 here...
2476 Skip the creation of the minimal symbols based on the ECOFF
2479 /* Pass 2 over external syms: fill in external symbols */
2481 ext_in_end
= ext_in
+ hdr
->iextMax
;
2482 for (; ext_in
< ext_in_end
; ext_in
++)
2484 enum minimal_symbol_type ms_type
= mst_text
;
2485 CORE_ADDR svalue
= ext_in
->asym
.value
;
2487 /* The Irix 5 native tools seem to sometimes generate bogus
2488 external symbols. */
2489 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2491 complaint (&symfile_complaints
,
2492 _("bad ifd for external symbol: %d (max %ld)"), ext_in
->ifd
,
2496 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2498 complaint (&symfile_complaints
,
2499 _("bad iss for external symbol: %ld (max %ld)"),
2500 ext_in
->asym
.iss
, hdr
->issExtMax
);
2504 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2505 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2508 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2512 /* Pass 3 over files, over local syms: fill in static symbols */
2513 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2515 /* Process ECOFF Symbol Types and Storage Classes */
2516 switch (ext_in
->asym
.st
)
2519 /* Beginnning of Procedure */
2520 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2523 /* Load time only static procs */
2524 ms_type
= mst_file_text
;
2525 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2528 /* External symbol */
2529 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2531 /* The value of a common symbol is its size, not its address.
2535 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2538 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2540 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2543 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2545 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2548 svalue
+= ANOFFSET (objfile
->section_offsets
,
2549 get_section_index (objfile
, ".sbss"));
2557 /* On certain platforms, some extra label symbols can be
2558 generated by the linker. One possible usage for this kind
2559 of symbols is to represent the address of the begining of a
2560 given section. For instance, on Tru64 5.1, the address of
2561 the _ftext label is the start address of the .text section.
2563 The storage class of these symbols is usually directly
2564 related to the section to which the symbol refers. For
2565 instance, on Tru64 5.1, the storage class for the _fdata
2566 label is scData, refering to the .data section.
2568 It is actually possible that the section associated to the
2569 storage class of the label does not exist. On True64 5.1
2570 for instance, the libm.so shared library does not contain
2571 any .data section, although it contains a _fpdata label
2572 which storage class is scData... Since these symbols are
2573 usually useless for the debugger user anyway, we just
2574 discard these symbols.
2577 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2579 if (objfile
->sect_index_text
== -1)
2582 ms_type
= mst_file_text
;
2583 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2585 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2587 if (objfile
->sect_index_data
== -1)
2590 ms_type
= mst_file_data
;
2591 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2593 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2595 if (objfile
->sect_index_bss
== -1)
2598 ms_type
= mst_file_bss
;
2599 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2601 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2603 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2605 if (sbss_sect_index
== -1)
2608 ms_type
= mst_file_bss
;
2609 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2616 /* The alpha has the section start addresses in stLocal symbols
2617 whose name starts with a `.'. Skip those but complain for all
2618 other stLocal symbols.
2619 Irix6 puts the section start addresses in stNil symbols, skip
2625 ms_type
= mst_unknown
;
2626 unknown_ext_complaint (name
);
2628 if (!ECOFF_IN_ELF (cur_bfd
))
2629 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2633 /* Pass 3 over files, over local syms: fill in static symbols */
2634 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2636 struct partial_symtab
*save_pst
;
2640 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2644 fdr_to_pst
[f_idx
].pst
= NULL
;
2648 /* Determine the start address for this object file from the
2649 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2653 if (relocatable
|| textlow
!= 0)
2654 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2658 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2661 objfile
->global_psymbols
.next
,
2662 objfile
->static_psymbols
.next
);
2663 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2664 sizeof (struct symloc
));
2665 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2668 FDR_IDX (pst
) = f_idx
;
2669 CUR_BFD (pst
) = cur_bfd
;
2670 DEBUG_SWAP (pst
) = debug_swap
;
2671 DEBUG_INFO (pst
) = debug_info
;
2672 PENDING_LIST (pst
) = pending_list
;
2674 /* The way to turn this into a symtab is to call... */
2675 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2677 /* Set up language for the pst.
2678 The language from the FDR is used if it is unambigious (e.g. cfront
2679 with native cc and g++ will set the language to C).
2680 Otherwise we have to deduce the language from the filename.
2681 Native ecoff has every header file in a separate FDR, so
2682 deduce_language_from_filename will return language_unknown for
2683 a header file, which is not what we want.
2684 But the FDRs for the header files are after the FDR for the source
2685 file, so we can assign the language of the source file to the
2686 following header files. Then we save the language in the private
2687 pst data so that we can reuse it when building symtabs. */
2688 prev_language
= psymtab_language
;
2692 case langCplusplusV2
:
2693 psymtab_language
= language_cplus
;
2696 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2699 if (psymtab_language
== language_unknown
)
2700 psymtab_language
= prev_language
;
2701 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2703 pst
->texthigh
= pst
->textlow
;
2705 /* For stabs-in-ecoff files, the second symbol must be @stab.
2706 This symbol is emitted by mips-tfile to signal that the
2707 current object file uses encapsulated stabs instead of mips
2708 ecoff for local symbols. (It is the second symbol because
2709 the first symbol is the stFile used to signal the start of a
2711 processing_gcc_compilation
= 0;
2714 (*swap_sym_in
) (cur_bfd
,
2715 ((char *) debug_info
->external_sym
2716 + (fh
->isymBase
+ 1) * external_sym_size
),
2718 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2720 processing_gcc_compilation
= 2;
2723 if (processing_gcc_compilation
!= 0)
2725 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2730 (*swap_sym_in
) (cur_bfd
,
2731 (((char *) debug_info
->external_sym
)
2732 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2734 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2735 if (!ECOFF_IS_STAB (&sh
))
2737 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2742 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2743 if (sh
.st
== stStaticProc
)
2745 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2746 record_minimal_symbol (namestring
, sh
.value
,
2747 mst_file_text
, sh
.sc
,
2750 procaddr
= sh
.value
;
2752 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2753 (debug_info
->external_aux
2756 (*swap_sym_in
) (cur_bfd
,
2757 ((char *) debug_info
->external_sym
2758 + ((fh
->isymBase
+ isym
- 1)
2759 * external_sym_size
)),
2763 CORE_ADDR high
= procaddr
+ sh
.value
;
2765 /* Kludge for Irix 5.2 zero fh->adr. */
2767 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2768 pst
->textlow
= procaddr
;
2769 if (high
> pst
->texthigh
)
2770 pst
->texthigh
= high
;
2773 else if (sh
.st
== stStatic
)
2788 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2789 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2790 record_minimal_symbol (namestring
, sh
.value
,
2791 mst_file_data
, sh
.sc
,
2796 /* FIXME! Shouldn't this use cases for bss,
2797 then have the default be abs? */
2798 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2799 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2800 record_minimal_symbol (namestring
, sh
.value
,
2801 mst_file_bss
, sh
.sc
,
2808 /* Handle stabs continuation */
2810 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2811 int len
= strlen (stabstring
);
2812 while (stabstring
[len
- 1] == '\\')
2815 char *stabstring1
= stabstring
;
2819 /* Ignore continuation char from 1st string */
2822 /* Read next stabstring */
2824 (*swap_sym_in
) (cur_bfd
,
2825 (((char *) debug_info
->external_sym
)
2826 + (fh
->isymBase
+ cur_sdx
)
2827 * external_sym_size
),
2829 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2830 len2
= strlen (stabstring2
);
2832 /* Concatinate stabstring2 with stabstring1 */
2834 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2835 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2838 stabstring
= xmalloc (len
+ len2
+ 1);
2839 strcpy (stabstring
, stabstring1
);
2841 strcpy (stabstring
+ len
, stabstring2
);
2849 * Standard, external, non-debugger, symbols
2852 case N_TEXT
| N_EXT
:
2853 case N_NBTEXT
| N_EXT
:
2854 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2857 case N_DATA
| N_EXT
:
2858 case N_NBDATA
| N_EXT
:
2859 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2864 case N_NBBSS
| N_EXT
:
2865 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2866 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2873 /* Standard, local, non-debugger, symbols */
2877 /* We need to be able to deal with both N_FN or N_TEXT,
2878 because we have no way of knowing whether the sys-supplied ld
2879 or GNU ld was used to make the executable. Sequents throw
2880 in another wrinkle -- they renumbered N_FN. */
2888 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2891 case N_UNDF
| N_EXT
:
2892 continue; /* Just undefined, not COMMON */
2897 /* Lots of symbol types we can just ignore. */
2904 /* Keep going . . . */
2907 * Special symbol types for GNU
2910 case N_INDR
| N_EXT
:
2912 case N_SETA
| N_EXT
:
2914 case N_SETT
| N_EXT
:
2916 case N_SETD
| N_EXT
:
2918 case N_SETB
| N_EXT
:
2929 static int prev_so_symnum
= -10;
2930 static int first_so_symnum
;
2932 int prev_textlow_not_set
;
2934 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2936 prev_textlow_not_set
= textlow_not_set
;
2938 /* A zero value is probably an indication for the SunPRO 3.0
2939 compiler. end_psymtab explicitly tests for zero, so
2940 don't relocate it. */
2943 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2945 textlow_not_set
= 1;
2949 textlow_not_set
= 0;
2951 past_first_source_file
= 1;
2953 if (prev_so_symnum
!= symnum
- 1)
2954 { /* Here if prev stab wasn't N_SO */
2955 first_so_symnum
= symnum
;
2959 pst
= (struct partial_symtab
*) 0;
2961 dependencies_used
= 0;
2965 prev_so_symnum
= symnum
;
2967 /* End the current partial symtab and start a new one */
2969 /* SET_NAMESTRING ();*/
2970 namestring
= stabstring
;
2972 /* Null name means end of .o file. Don't start a new one. */
2973 if (*namestring
== '\000')
2976 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2977 The first one is a directory name; the second the file name.
2978 If pst exists, is empty, and has a filename ending in '/',
2979 we assume the previous N_SO was a directory name. */
2981 p
= strrchr (namestring
, '/');
2982 if (p
&& *(p
+ 1) == '\000')
2983 continue; /* Simply ignore directory name SOs */
2985 /* Some other compilers (C++ ones in particular) emit useless
2986 SOs for non-existant .c files. We ignore all subsequent SOs that
2987 immediately follow the first. */
2999 enum language tmp_language
;
3000 /* Mark down an include file in the current psymtab */
3002 /* SET_NAMESTRING ();*/
3003 namestring
= stabstring
;
3005 tmp_language
= deduce_language_from_filename (namestring
);
3007 /* Only change the psymtab's language if we've learned
3008 something useful (eg. tmp_language is not language_unknown).
3009 In addition, to match what start_subfile does, never change
3011 if (tmp_language
!= language_unknown
3012 && (tmp_language
!= language_c
3013 || psymtab_language
!= language_cplus
))
3014 psymtab_language
= tmp_language
;
3016 /* In C++, one may expect the same filename to come round many
3017 times, when code is coming alternately from the main file
3018 and from inline functions in other files. So I check to see
3019 if this is a file we've seen before -- either the main
3020 source file, or a previously included file.
3022 This seems to be a lot of time to be spending on N_SOL, but
3023 things like "break c-exp.y:435" need to work (I
3024 suppose the psymtab_include_list could be hashed or put
3025 in a binary tree, if profiling shows this is a major hog). */
3026 if (pst
&& strcmp (namestring
, pst
->filename
) == 0)
3030 for (i
= 0; i
< includes_used
; i
++)
3031 if (strcmp (namestring
,
3032 psymtab_include_list
[i
]) == 0)
3041 psymtab_include_list
[includes_used
++] = namestring
;
3042 if (includes_used
>= includes_allocated
)
3044 char **orig
= psymtab_include_list
;
3046 psymtab_include_list
= (char **)
3047 alloca ((includes_allocated
*= 2) *
3049 memcpy (psymtab_include_list
, orig
,
3050 includes_used
* sizeof (char *));
3054 case N_LSYM
: /* Typedef or automatic variable. */
3055 case N_STSYM
: /* Data seg var -- static */
3056 case N_LCSYM
: /* BSS " */
3057 case N_ROSYM
: /* Read-only data seg var -- static. */
3058 case N_NBSTS
: /* Gould nobase. */
3059 case N_NBLCS
: /* symbols. */
3061 case N_GSYM
: /* Global (extern) variable; can be
3062 data or bss (sigh FIXME). */
3064 /* Following may probably be ignored; I'll leave them here
3065 for now (until I do Pascal and Modula 2 extensions). */
3067 case N_PC
: /* I may or may not need this; I
3069 case N_M2C
: /* I suspect that I can ignore this here. */
3070 case N_SCOPE
: /* Same. */
3072 /* SET_NAMESTRING ();*/
3073 namestring
= stabstring
;
3074 p
= (char *) strchr (namestring
, ':');
3076 continue; /* Not a debugging symbol. */
3080 /* Main processing section for debugging symbols which
3081 the initial read through the symbol tables needs to worry
3082 about. If we reach this point, the symbol which we are
3083 considering is definitely one we are interested in.
3084 p must also contain the (valid) index into the namestring
3085 which indicates the debugging type symbol. */
3090 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3092 if (gdbarch_static_transform_name_p (gdbarch
))
3093 namestring
= gdbarch_static_transform_name
3094 (gdbarch
, namestring
);
3096 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3097 VAR_DOMAIN
, LOC_STATIC
,
3098 &objfile
->static_psymbols
,
3100 psymtab_language
, objfile
);
3103 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3104 /* The addresses in these entries are reported to be
3105 wrong. See the code that reads 'G's for symtabs. */
3106 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3107 VAR_DOMAIN
, LOC_STATIC
,
3108 &objfile
->global_psymbols
,
3110 psymtab_language
, objfile
);
3114 /* When a 'T' entry is defining an anonymous enum, it
3115 may have a name which is the empty string, or a
3116 single space. Since they're not really defining a
3117 symbol, those shouldn't go in the partial symbol
3118 table. We do pick up the elements of such enums at
3119 'check_enum:', below. */
3120 if (p
>= namestring
+ 2
3121 || (p
== namestring
+ 1
3122 && namestring
[0] != ' '))
3124 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3125 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3126 &objfile
->static_psymbols
,
3128 psymtab_language
, objfile
);
3131 /* Also a typedef with the same name. */
3132 add_psymbol_to_list (namestring
, p
- namestring
,
3134 VAR_DOMAIN
, LOC_TYPEDEF
,
3135 &objfile
->static_psymbols
,
3137 psymtab_language
, objfile
);
3143 if (p
!= namestring
) /* a name is there, not just :T... */
3145 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3146 VAR_DOMAIN
, LOC_TYPEDEF
,
3147 &objfile
->static_psymbols
,
3149 psymtab_language
, objfile
);
3152 /* If this is an enumerated type, we need to
3153 add all the enum constants to the partial symbol
3154 table. This does not cover enums without names, e.g.
3155 "enum {a, b} c;" in C, but fortunately those are
3156 rare. There is no way for GDB to find those from the
3157 enum type without spending too much time on it. Thus
3158 to solve this problem, the compiler needs to put out the
3159 enum in a nameless type. GCC2 does this. */
3161 /* We are looking for something of the form
3162 <name> ":" ("t" | "T") [<number> "="] "e"
3163 {<constant> ":" <value> ","} ";". */
3165 /* Skip over the colon and the 't' or 'T'. */
3167 /* This type may be given a number. Also, numbers can come
3168 in pairs like (0,26). Skip over it. */
3169 while ((*p
>= '0' && *p
<= '9')
3170 || *p
== '(' || *p
== ',' || *p
== ')'
3176 /* The aix4 compiler emits extra crud before the members. */
3179 /* Skip over the type (?). */
3183 /* Skip over the colon. */
3187 /* We have found an enumerated type. */
3188 /* According to comments in read_enum_type
3189 a comma could end it instead of a semicolon.
3190 I don't know where that happens.
3192 while (*p
&& *p
!= ';' && *p
!= ',')
3196 /* Check for and handle cretinous dbx symbol name
3198 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3199 p
= next_symbol_text (objfile
);
3201 /* Point to the character after the name
3202 of the enum constant. */
3203 for (q
= p
; *q
&& *q
!= ':'; q
++)
3205 /* Note that the value doesn't matter for
3206 enum constants in psymtabs, just in symtabs. */
3207 add_psymbol_to_list (p
, q
- p
, 1,
3208 VAR_DOMAIN
, LOC_CONST
,
3209 &objfile
->static_psymbols
, 0,
3210 0, psymtab_language
, objfile
);
3211 /* Point past the name. */
3213 /* Skip over the value. */
3214 while (*p
&& *p
!= ',')
3216 /* Advance past the comma. */
3223 /* Constant, e.g. from "const" in Pascal. */
3224 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3225 VAR_DOMAIN
, LOC_CONST
,
3226 &objfile
->static_psymbols
, sh
.value
,
3227 0, psymtab_language
, objfile
);
3233 int name_len
= p
- namestring
;
3234 char *name
= xmalloc (name_len
+ 1);
3235 memcpy (name
, namestring
, name_len
);
3236 name
[name_len
] = '\0';
3237 function_outside_compilation_unit_complaint (name
);
3240 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3241 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3242 VAR_DOMAIN
, LOC_BLOCK
,
3243 &objfile
->static_psymbols
,
3245 psymtab_language
, objfile
);
3248 /* Global functions were ignored here, but now they
3249 are put into the global psymtab like one would expect.
3250 They're also in the minimal symbol table. */
3254 int name_len
= p
- namestring
;
3255 char *name
= xmalloc (name_len
+ 1);
3256 memcpy (name
, namestring
, name_len
);
3257 name
[name_len
] = '\0';
3258 function_outside_compilation_unit_complaint (name
);
3261 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3262 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3263 VAR_DOMAIN
, LOC_BLOCK
,
3264 &objfile
->global_psymbols
,
3266 psymtab_language
, objfile
);
3269 /* Two things show up here (hopefully); static symbols of
3270 local scope (static used inside braces) or extensions
3271 of structure symbols. We can ignore both. */
3285 case '#': /* for symbol identification (used in live ranges) */
3289 /* It is a C++ nested symbol. We don't need to record it
3290 (I don't think); if we try to look up foo::bar::baz,
3291 then symbols for the symtab containing foo should get
3292 read in, I think. */
3293 /* Someone says sun cc puts out symbols like
3294 /foo/baz/maclib::/usr/local/bin/maclib,
3295 which would get here with a symbol type of ':'. */
3299 /* Unexpected symbol descriptor. The second and subsequent stabs
3300 of a continued stab can show up here. The question is
3301 whether they ever can mimic a normal stab--it would be
3302 nice if not, since we certainly don't want to spend the
3303 time searching to the end of every string looking for
3306 complaint (&symfile_complaints
,
3307 _("unknown symbol descriptor `%c'"), p
[1]);
3309 /* Ignore it; perhaps it is an extension that we don't
3318 /* Solaris 2 end of module, finish current partial
3319 symbol table. END_PSYMTAB will set
3320 pst->texthigh to the proper value, which is
3321 necessary if a module compiled without
3322 debugging info follows this module. */
3324 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3326 pst
= (struct partial_symtab
*) 0;
3328 dependencies_used
= 0;
3333 if (sh
.value
> save_pst
->texthigh
)
3334 save_pst
->texthigh
= sh
.value
;
3339 case N_SSYM
: /* Claim: Structure or union element.
3340 Hopefully, I can ignore this. */
3341 case N_ENTRY
: /* Alternate entry point; can ignore. */
3342 case N_MAIN
: /* Can definitely ignore this. */
3343 case N_CATCH
: /* These are GNU C++ extensions */
3344 case N_EHDECL
: /* that can safely be ignored here. */
3354 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3355 case N_DEFD
: /* GNU Modula-2 */
3356 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3358 case N_OBJ
: /* useless types from Solaris */
3360 /* These symbols aren't interesting; don't worry about them */
3365 /* If we haven't found it yet, ignore it. It's probably some
3366 new type we don't know about yet. */
3367 complaint (&symfile_complaints
, _("unknown symbol type %s"),
3368 hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3372 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3375 /* end - Handle continuation */
3380 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3383 enum address_class
class;
3385 (*swap_sym_in
) (cur_bfd
,
3386 ((char *) debug_info
->external_sym
3387 + ((fh
->isymBase
+ cur_sdx
)
3388 * external_sym_size
)),
3391 if (ECOFF_IS_STAB (&sh
))
3397 /* Non absolute static symbols go into the minimal table. */
3398 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3399 || (sh
.index
== indexNil
3400 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3402 /* FIXME, premature? */
3407 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3413 /* The value of a stEnd symbol is the displacement from the
3414 corresponding start symbol value, do not relocate it. */
3416 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3423 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3427 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3438 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3440 SECT_OFF_TEXT (objfile
), NULL
,
3446 /* Ignore all parameter symbol records. */
3447 if (sh
.index
>= hdr
->iauxMax
)
3449 /* Should not happen, but does when cross-compiling
3450 with the MIPS compiler. FIXME -- pull later. */
3451 index_complaint (name
);
3452 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3455 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3456 (debug_info
->external_aux
3460 if (new_sdx
<= cur_sdx
)
3462 /* This should not happen either... FIXME. */
3463 complaint (&symfile_complaints
,
3464 _("bad proc end in aux found from symbol %s"),
3466 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3469 /* For stProc symbol records, we need to check the
3470 storage class as well, as only (stProc, scText)
3471 entries represent "real" procedures - See the
3472 Compaq document titled "Object File / Symbol Table
3473 Format Specification" for more information. If the
3474 storage class is not scText, we discard the whole
3475 block of symbol records for this stProc. */
3476 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3479 /* Usually there is a local and a global stProc symbol
3480 for a function. This means that the function name
3481 has already been entered into the mimimal symbol table
3482 while processing the global symbols in pass 2 above.
3483 One notable exception is the PROGRAM name from
3484 f77 compiled executables, it is only put out as
3485 local stProc symbol, and a global MAIN__ stProc symbol
3486 points to it. It doesn't matter though, as gdb is
3487 still able to find the PROGRAM name via the partial
3488 symbol table, and the MAIN__ symbol via the minimal
3490 if (sh
.st
== stProc
)
3491 add_psymbol_to_list (name
, strlen (name
), 1,
3492 VAR_DOMAIN
, LOC_BLOCK
,
3493 &objfile
->global_psymbols
,
3494 0, sh
.value
, psymtab_language
, objfile
);
3496 add_psymbol_to_list (name
, strlen (name
), 1,
3497 VAR_DOMAIN
, LOC_BLOCK
,
3498 &objfile
->static_psymbols
,
3499 0, sh
.value
, psymtab_language
, objfile
);
3501 procaddr
= sh
.value
;
3504 (*swap_sym_in
) (cur_bfd
,
3505 ((char *) debug_info
->external_sym
3506 + ((fh
->isymBase
+ cur_sdx
- 1)
3507 * external_sym_size
)),
3512 /* Kludge for Irix 5.2 zero fh->adr. */
3514 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3515 pst
->textlow
= procaddr
;
3517 high
= procaddr
+ sh
.value
;
3518 if (high
> pst
->texthigh
)
3519 pst
->texthigh
= high
;
3522 case stStatic
: /* Variable */
3523 if (SC_IS_DATA (sh
.sc
))
3524 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3526 SECT_OFF_DATA (objfile
),
3530 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3532 SECT_OFF_BSS (objfile
),
3538 case stIndirect
: /* Irix5 forward declaration */
3539 /* Skip forward declarations from Irix5 cc */
3542 case stTypedef
: /* Typedef */
3543 /* Skip typedefs for forward declarations and opaque
3544 structs from alpha and mips cc. */
3545 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3547 class = LOC_TYPEDEF
;
3550 case stConstant
: /* Constant decl */
3557 case stBlock
: /* { }, str, un, enum */
3558 /* Do not create a partial symbol for cc unnamed aggregates
3559 and gcc empty aggregates. */
3560 if ((sh
.sc
== scInfo
3561 || SC_IS_COMMON (sh
.sc
))
3563 && sh
.index
!= cur_sdx
+ 2)
3565 add_psymbol_to_list (name
, strlen (name
), 1,
3566 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3567 &objfile
->static_psymbols
,
3569 psymtab_language
, objfile
);
3571 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3573 /* Skip over the block */
3575 if (new_sdx
<= cur_sdx
)
3577 /* This happens with the Ultrix kernel. */
3578 complaint (&symfile_complaints
,
3579 _("bad aux index at block symbol %s"), name
);
3580 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3585 case stFile
: /* File headers */
3586 case stLabel
: /* Labels */
3587 case stEnd
: /* Ends of files */
3590 case stLocal
: /* Local variables */
3591 /* Normally these are skipped because we skip over
3592 all blocks we see. However, these can occur
3593 as visible symbols in a .h file that contains code. */
3597 /* Both complaints are valid: one gives symbol name,
3598 the other the offending symbol type. */
3599 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3601 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3605 /* Use this gdb symbol */
3606 add_psymbol_to_list (name
, strlen (name
), 1,
3608 &objfile
->static_psymbols
,
3609 0, sh
.value
, psymtab_language
, objfile
);
3611 cur_sdx
++; /* Go to next file symbol */
3614 /* Now do enter the external symbols. */
3615 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3616 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3617 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3618 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3619 for (; --cur_sdx
>= 0; ext_ptr
++)
3621 enum address_class
class;
3626 if (ext_ptr
->ifd
!= f_idx
)
3627 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
3628 psh
= &ext_ptr
->asym
;
3630 /* Do not add undefined symbols to the partial symbol table. */
3631 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3634 svalue
= psh
->value
;
3639 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3646 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3650 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3657 /* These are generated for static symbols in .o files,
3662 /* External procedure symbols have been entered
3663 into the minimal symbol table in pass 2 above.
3664 Ignore them, as parse_external will ignore them too. */
3670 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3671 /* Fall through, pretend it's global. */
3673 /* Global common symbols are resolved by the runtime loader,
3675 if (SC_IS_COMMON (psh
->sc
))
3681 name
= debug_info
->ssext
+ psh
->iss
;
3682 add_psymbol_to_list (name
, strlen (name
), 1,
3684 &objfile
->global_psymbols
,
3686 psymtab_language
, objfile
);
3690 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3691 empty and put on the free list. */
3692 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3693 psymtab_include_list
, includes_used
,
3694 -1, save_pst
->texthigh
,
3695 dependency_list
, dependencies_used
, textlow_not_set
);
3697 dependencies_used
= 0;
3699 /* The objfile has its functions reordered if this partial symbol
3700 table overlaps any other partial symbol table.
3701 We cannot assume a reordered objfile if a partial symbol table
3702 is contained within another partial symbol table, as partial symbol
3703 tables for include files with executable code are contained
3704 within the partial symbol table for the including source file,
3705 and we do not want to flag the objfile reordered for these cases.
3707 This strategy works well for Irix-5.2 shared libraries, but we
3708 might have to use a more elaborate (and slower) algorithm for
3710 save_pst
= fdr_to_pst
[f_idx
].pst
;
3711 if (save_pst
!= NULL
3712 && save_pst
->textlow
!= 0
3713 && !(objfile
->flags
& OBJF_REORDERED
))
3715 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3718 && save_pst
->textlow
>= pst
->textlow
3719 && save_pst
->textlow
< pst
->texthigh
3720 && save_pst
->texthigh
> pst
->texthigh
)
3722 objfile
->flags
|= OBJF_REORDERED
;
3729 /* Now scan the FDRs for dependencies */
3730 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3732 fh
= f_idx
+ debug_info
->fdr
;
3733 pst
= fdr_to_pst
[f_idx
].pst
;
3735 if (pst
== (struct partial_symtab
*) NULL
)
3738 /* This should catch stabs-in-ecoff. */
3742 /* Skip the first file indirect entry as it is a self dependency
3743 for source files or a reverse .h -> .c dependency for header files. */
3744 pst
->number_of_dependencies
= 0;
3746 ((struct partial_symtab
**)
3747 obstack_alloc (&objfile
->objfile_obstack
,
3749 * sizeof (struct partial_symtab
*))));
3750 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3754 (*swap_rfd_in
) (cur_bfd
,
3755 ((char *) debug_info
->external_rfd
3756 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3758 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3760 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3764 /* Skip self dependencies of header files. */
3768 /* Do not add to dependeny list if psymtab was empty. */
3769 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3771 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3775 /* Remove the dummy psymtab created for -O3 images above, if it is
3776 still empty, to enable the detection of stripped executables. */
3777 if (objfile
->psymtabs
->next
== NULL
3778 && objfile
->psymtabs
->number_of_dependencies
== 0
3779 && objfile
->psymtabs
->n_global_syms
== 0
3780 && objfile
->psymtabs
->n_static_syms
== 0)
3781 objfile
->psymtabs
= NULL
;
3782 do_cleanups (old_chain
);
3785 /* If the current psymbol has an enumerated type, we need to add
3786 all the the enum constants to the partial symbol table. */
3789 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3792 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3793 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3794 char *ext_sym
= ((char *) debug_info
->external_sym
3795 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3805 /* It is an enumerated type if the next symbol entry is a stMember
3806 and its auxiliary index is indexNil or its auxiliary entry
3807 is a plain btNil or btVoid.
3808 Alpha cc -migrate enums are recognized by a zero index and
3809 a zero symbol value.
3810 DU 4.0 cc enums are recognized by a member type of btEnum without
3811 qualifiers and a zero symbol value. */
3812 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3813 if (sh
.st
!= stMember
)
3816 if (sh
.index
== indexNil
3817 || (sh
.index
== 0 && svalue
== 0))
3819 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3820 &(debug_info
->external_aux
3821 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3823 if ((tir
.bt
!= btNil
3825 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3826 || tir
.tq0
!= tqNil
)
3838 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3839 if (sh
.st
!= stMember
)
3841 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3843 /* Note that the value doesn't matter for enum constants
3844 in psymtabs, just in symtabs. */
3845 add_psymbol_to_list (name
, strlen (name
), 1,
3846 VAR_DOMAIN
, LOC_CONST
,
3847 &objfile
->static_psymbols
, 0,
3848 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3849 ext_sym
+= external_sym_size
;
3853 /* Get the next symbol. OBJFILE is unused. */
3856 mdebug_next_symbol_text (struct objfile
*objfile
)
3861 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3862 ((char *) debug_info
->external_sym
3863 + ((cur_fdr
->isymBase
+ cur_sdx
)
3864 * debug_swap
->external_sym_size
)),
3866 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3869 /* Ancillary function to psymtab_to_symtab(). Does all the work
3870 for turning the partial symtab PST into a symtab, recurring
3871 first on all dependent psymtabs. The argument FILENAME is
3872 only passed so we can see in debug stack traces what file
3875 This function has a split personality, based on whether the
3876 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3877 The flow of control and even the memory allocation differs. FIXME. */
3880 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3882 bfd_size_type external_sym_size
;
3883 bfd_size_type external_pdr_size
;
3884 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3885 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3887 struct symtab
*st
= NULL
;
3889 struct linetable
*lines
;
3890 CORE_ADDR lowest_pdr_addr
= 0;
3891 int last_symtab_ended
= 0;
3897 /* Read in all partial symbtabs on which this one is dependent.
3898 NOTE that we do have circular dependencies, sigh. We solved
3899 that by setting pst->readin before this point. */
3901 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3902 if (!pst
->dependencies
[i
]->readin
)
3904 /* Inform about additional files to be read in. */
3907 fputs_filtered (" ", gdb_stdout
);
3909 fputs_filtered ("and ", gdb_stdout
);
3911 printf_filtered ("%s...",
3912 pst
->dependencies
[i
]->filename
);
3913 wrap_here (""); /* Flush output */
3914 gdb_flush (gdb_stdout
);
3916 /* We only pass the filename for debug purposes */
3917 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3918 pst
->dependencies
[i
]->filename
);
3921 /* Do nothing if this is a dummy psymtab. */
3923 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3924 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3927 /* Now read the symbols for this symtab */
3929 cur_bfd
= CUR_BFD (pst
);
3930 debug_swap
= DEBUG_SWAP (pst
);
3931 debug_info
= DEBUG_INFO (pst
);
3932 pending_list
= PENDING_LIST (pst
);
3933 external_sym_size
= debug_swap
->external_sym_size
;
3934 external_pdr_size
= debug_swap
->external_pdr_size
;
3935 swap_sym_in
= debug_swap
->swap_sym_in
;
3936 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3937 current_objfile
= pst
->objfile
;
3938 cur_fd
= FDR_IDX (pst
);
3939 fh
= ((cur_fd
== -1)
3941 : debug_info
->fdr
+ cur_fd
);
3944 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3945 processing_gcc_compilation
= 0;
3946 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3950 (*swap_sym_in
) (cur_bfd
,
3951 ((char *) debug_info
->external_sym
3952 + (fh
->isymBase
+ 1) * external_sym_size
),
3954 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3957 /* We indicate that this is a GCC compilation so that certain
3958 features will be enabled in stabsread/dbxread. */
3959 processing_gcc_compilation
= 2;
3963 if (processing_gcc_compilation
!= 0)
3965 struct gdbarch
*gdbarch
= get_objfile_arch (pst
->objfile
);
3967 /* This symbol table contains stabs-in-ecoff entries. */
3969 /* Parse local symbols first */
3971 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3973 current_objfile
= NULL
;
3976 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3982 (*swap_sym_in
) (cur_bfd
,
3983 (((char *) debug_info
->external_sym
)
3984 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3986 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3988 /* XXX This is a hack. It will go away! */
3989 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3991 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3993 /* We should never get non N_STAB symbols here, but they
3994 should be harmless, so keep process_one_symbol from
3995 complaining about them. */
3996 if (type_code
& N_STAB
)
3998 /* If we found a trailing N_SO with no name, process
3999 it here instead of in process_one_symbol, so we
4000 can keep a handle to its symtab. The symtab
4001 would otherwise be ended twice, once in
4002 process_one_symbol, and once after this loop. */
4003 if (type_code
== N_SO
4005 && previous_stab_code
!= (unsigned char) N_SO
4008 valu
+= ANOFFSET (pst
->section_offsets
,
4009 SECT_OFF_TEXT (pst
->objfile
));
4010 previous_stab_code
= N_SO
;
4011 st
= end_symtab (valu
, pst
->objfile
,
4012 SECT_OFF_TEXT (pst
->objfile
));
4014 last_symtab_ended
= 1;
4018 last_symtab_ended
= 0;
4019 process_one_symbol (type_code
, 0, valu
, name
,
4020 pst
->section_offsets
, pst
->objfile
);
4023 /* Similarly a hack. */
4024 else if (name
[0] == '#')
4026 process_one_symbol (N_SLINE
, 0, valu
, name
,
4027 pst
->section_offsets
, pst
->objfile
);
4029 if (type_code
== N_FUN
)
4031 /* Make up special symbol to contain
4032 procedure specific info */
4033 struct mdebug_extra_func_info
*e
=
4034 ((struct mdebug_extra_func_info
*)
4035 obstack_alloc (¤t_objfile
->objfile_obstack
,
4036 sizeof (struct mdebug_extra_func_info
)));
4037 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4039 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4040 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4041 SYMBOL_CLASS (s
) = LOC_CONST
;
4042 SYMBOL_TYPE (s
) = objfile_type (pst
->objfile
)->builtin_void
;
4043 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4044 e
->pdr
.framereg
= -1;
4045 add_symbol_to_list (s
, &local_symbols
);
4048 else if (sh
.st
== stLabel
)
4050 if (sh
.index
== indexNil
)
4052 /* This is what the gcc2_compiled and __gnu_compiled_*
4053 show up as. So don't complain. */
4058 /* Handle encoded stab line number. */
4059 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
4060 record_line (current_subfile
, sh
.index
,
4061 gdbarch_addr_bits_remove (gdbarch
, valu
));
4064 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4065 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4066 /* These are generated by gcc-2.x, do not complain */
4069 complaint (&symfile_complaints
, _("unknown stabs symbol %s"), name
);
4072 if (! last_symtab_ended
)
4074 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
4078 /* There used to be a call to sort_blocks here, but this should not
4079 be necessary for stabs symtabs. And as sort_blocks modifies the
4080 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4081 it did the wrong thing if the first procedure in a file was
4082 generated via asm statements. */
4084 /* Fill in procedure info next. */
4088 struct cleanup
*old_chain
;
4094 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4095 old_chain
= make_cleanup (xfree
, pr_block
);
4097 pdr_ptr
= ((char *) debug_info
->external_pdr
4098 + fh
->ipdFirst
* external_pdr_size
);
4099 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4103 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4105 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4107 /* Determine lowest PDR address, the PDRs are not always
4109 if (pdr_in
== pr_block
)
4110 lowest_pdr_addr
= pdr_in
->adr
;
4111 else if (pdr_in
->adr
< lowest_pdr_addr
)
4112 lowest_pdr_addr
= pdr_in
->adr
;
4116 pdr_in_end
= pdr_in
+ fh
->cpd
;
4117 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4118 parse_procedure (pdr_in
, st
, pst
);
4120 do_cleanups (old_chain
);
4125 /* This symbol table contains ordinary ecoff entries. */
4134 st
= new_symtab ("unknown", 0, pst
->objfile
);
4138 maxlines
= 2 * fh
->cline
;
4139 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4141 /* The proper language was already determined when building
4142 the psymtab, use it. */
4143 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4146 psymtab_language
= st
->language
;
4148 lines
= LINETABLE (st
);
4150 /* Get a new lexical context */
4152 push_parse_stack ();
4153 top_stack
->cur_st
= st
;
4154 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4156 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4157 BLOCK_END (top_stack
->cur_block
) = 0;
4158 top_stack
->blocktype
= stFile
;
4159 top_stack
->cur_type
= 0;
4160 top_stack
->procadr
= 0;
4161 top_stack
->numargs
= 0;
4162 found_ecoff_debugging_info
= 0;
4169 /* Parse local symbols first */
4170 sym_ptr
= ((char *) debug_info
->external_sym
4171 + fh
->isymBase
* external_sym_size
);
4172 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4173 while (sym_ptr
< sym_end
)
4178 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4179 c
= parse_symbol (&sh
,
4180 debug_info
->external_aux
+ fh
->iauxBase
,
4181 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4182 sym_ptr
+= c
* external_sym_size
;
4185 /* Linenumbers. At the end, check if we can save memory.
4186 parse_lines has to look ahead an arbitrary number of PDR
4187 structures, so we swap them all first. */
4191 struct cleanup
*old_chain
;
4197 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4199 old_chain
= make_cleanup (xfree
, pr_block
);
4201 pdr_ptr
= ((char *) debug_info
->external_pdr
4202 + fh
->ipdFirst
* external_pdr_size
);
4203 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4207 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4209 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4211 /* Determine lowest PDR address, the PDRs are not always
4213 if (pdr_in
== pr_block
)
4214 lowest_pdr_addr
= pdr_in
->adr
;
4215 else if (pdr_in
->adr
< lowest_pdr_addr
)
4216 lowest_pdr_addr
= pdr_in
->adr
;
4219 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4220 if (lines
->nitems
< fh
->cline
)
4221 lines
= shrink_linetable (lines
);
4223 /* Fill in procedure info next. */
4225 pdr_in_end
= pdr_in
+ fh
->cpd
;
4226 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4227 parse_procedure (pdr_in
, 0, pst
);
4229 do_cleanups (old_chain
);
4233 LINETABLE (st
) = lines
;
4235 /* .. and our share of externals.
4236 XXX use the global list to speed up things here. how?
4237 FIXME, Maybe quit once we have found the right number of ext's? */
4238 top_stack
->cur_st
= st
;
4239 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4241 top_stack
->blocktype
= stFile
;
4243 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4244 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4245 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4247 /* If there are undefined symbols, tell the user.
4248 The alpha has an undefined symbol for every symbol that is
4249 from a shared library, so tell the user only if verbose is on. */
4250 if (info_verbose
&& n_undef_symbols
)
4252 printf_filtered (_("File %s contains %d unresolved references:"),
4253 st
->filename
, n_undef_symbols
);
4254 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4255 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4256 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4266 /* Now link the psymtab and the symtab. */
4269 current_objfile
= NULL
;
4272 /* Ancillary parsing procedures. */
4274 /* Return 1 if the symbol pointed to by SH has a cross reference
4275 to an opaque aggregate type, else 0. */
4278 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4285 if (sh
->index
== indexNil
)
4288 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4289 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4290 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4294 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4295 if (rn
->rfd
== 0xfff)
4296 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4304 /* Lookup the type at relative index RN. Return it in TPP
4305 if found and in any event come up with its name PNAME.
4306 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4307 Return value says how many aux symbols we ate. */
4310 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
, enum type_code type_code
, /* Use to alloc new type if none is found. */
4311 char **pname
, int bigend
, char *sym_name
)
4320 struct mdebug_pending
*pend
;
4322 *tpp
= (struct type
*) NULL
;
4324 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4326 /* Escape index means 'the next one' */
4327 if (rn
->rfd
== 0xfff)
4330 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4337 /* mips cc uses a rf of -1 for opaque struct definitions.
4338 Set TYPE_FLAG_STUB for these types so that check_typedef will
4339 resolve them if the struct gets defined in another compilation unit. */
4342 *pname
= "<undefined>";
4343 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4347 /* mips cc uses an escaped rn->index of 0 for struct return types
4348 of procedures that were compiled without -g. These will always remain
4350 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4352 *pname
= "<undefined>";
4356 /* Find the relative file descriptor and the symbol in it. */
4357 fh
= get_rfd (fd
, rf
);
4358 xref_fd
= fh
- debug_info
->fdr
;
4360 if (rn
->index
>= fh
->csym
)
4362 /* File indirect entry is corrupt. */
4363 *pname
= "<illegal>";
4364 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4368 /* If we have processed this symbol then we left a forwarding
4369 pointer to the type in the pending list. If not, we`ll put
4370 it in a list of pending types, to be processed later when
4371 the file will be. In any event, we collect the name for the
4374 esh
= ((char *) debug_info
->external_sym
4375 + ((fh
->isymBase
+ rn
->index
)
4376 * debug_swap
->external_sym_size
));
4377 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4379 /* Make sure that this type of cross reference can be handled. */
4380 if ((sh
.sc
!= scInfo
4381 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4382 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4383 && sh
.st
!= stEnum
))
4384 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4386 /* File indirect entry is corrupt. */
4387 *pname
= "<illegal>";
4388 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4392 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4394 pend
= is_pending_symbol (fh
, esh
);
4399 /* We have not yet seen this type. */
4401 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4405 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4407 a) forward declarations of structs/unions/enums which are not
4408 defined in this compilation unit.
4409 For these the type will be void. This is a bad design decision
4410 as cross referencing across compilation units is impossible
4411 due to the missing name.
4412 b) forward declarations of structs/unions/enums/typedefs which
4413 are defined later in this file or in another file in the same
4414 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4415 Simply cross reference those again to get the true type.
4416 The forward references are not entered in the pending list and
4417 in the symbol table. */
4419 (*debug_swap
->swap_tir_in
) (bigend
,
4420 &(debug_info
->external_aux
4421 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4423 if (tir
.tq0
!= tqNil
)
4424 complaint (&symfile_complaints
,
4425 _("illegal tq0 in forward typedef for %s"), sym_name
);
4429 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4431 *pname
= "<undefined>";
4438 (debug_info
->external_aux
4439 + fh
->iauxBase
+ sh
.index
+ 1),
4440 tpp
, type_code
, pname
,
4441 fh
->fBigendian
, sym_name
);
4445 /* Follow a forward typedef. This might recursively
4446 call cross_ref till we get a non typedef'ed type.
4447 FIXME: This is not correct behaviour, but gdb currently
4448 cannot handle typedefs without type copying. Type
4449 copying is impossible as we might have mutual forward
4450 references between two files and the copied type would not
4451 get filled in when we later parse its definition. */
4452 *tpp
= parse_type (xref_fd
,
4453 debug_info
->external_aux
+ fh
->iauxBase
,
4457 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4458 add_pending (fh
, esh
, *tpp
);
4462 complaint (&symfile_complaints
,
4463 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4465 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4471 else if (sh
.st
== stTypedef
)
4473 /* Parse the type for a normal typedef. This might recursively call
4474 cross_ref till we get a non typedef'ed type.
4475 FIXME: This is not correct behaviour, but gdb currently
4476 cannot handle typedefs without type copying. But type copying is
4477 impossible as we might have mutual forward references between
4478 two files and the copied type would not get filled in when
4479 we later parse its definition. */
4480 *tpp
= parse_type (xref_fd
,
4481 debug_info
->external_aux
+ fh
->iauxBase
,
4485 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4489 /* Cross reference to a struct/union/enum which is defined
4490 in another file in the same compilation unit but that file
4491 has not been parsed yet.
4492 Initialize the type only, it will be filled in when
4493 it's definition is parsed. */
4494 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4496 add_pending (fh
, esh
, *tpp
);
4499 /* We used one auxent normally, two if we got a "next one" rf. */
4504 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4505 keeping the symtab sorted */
4507 static struct symbol
*
4508 mylookup_symbol (char *name
, struct block
*block
,
4509 domain_enum domain
, enum address_class
class)
4511 struct dict_iterator iter
;
4516 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4518 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4519 && SYMBOL_DOMAIN (sym
) == domain
4520 && SYMBOL_CLASS (sym
) == class
4521 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4525 block
= BLOCK_SUPERBLOCK (block
);
4527 return mylookup_symbol (name
, block
, domain
, class);
4532 /* Add a new symbol S to a block B. */
4535 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4537 SYMBOL_SYMTAB (s
) = symtab
;
4538 dict_add_symbol (BLOCK_DICT (b
), s
);
4541 /* Add a new block B to a symtab S */
4544 add_block (struct block
*b
, struct symtab
*s
)
4546 struct blockvector
*bv
= BLOCKVECTOR (s
);
4548 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4549 (sizeof (struct blockvector
)
4550 + BLOCKVECTOR_NBLOCKS (bv
)
4551 * sizeof (bv
->block
)));
4552 if (bv
!= BLOCKVECTOR (s
))
4553 BLOCKVECTOR (s
) = bv
;
4555 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4558 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4559 MIPS' linenumber encoding might need more than one byte
4560 to describe it, LAST is used to detect these continuation lines.
4562 Combining lines with the same line number seems like a bad idea.
4563 E.g: There could be a line number entry with the same line number after the
4564 prologue and GDB should not ignore it (this is a better way to find
4565 a prologue than mips_skip_prologue).
4566 But due to the compressed line table format there are line number entries
4567 for the same line which are needed to bridge the gap to the next
4568 line number entry. These entries have a bogus address info with them
4569 and we are unable to tell them from intended duplicate line number
4571 This is another reason why -ggdb debugging format is preferable. */
4574 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4576 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4577 Change them to something sensible. */
4581 last
= -2; /* make sure we record first line */
4583 if (last
== lineno
) /* skip continuation lines */
4586 lt
->item
[lt
->nitems
].line
= lineno
;
4587 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4591 /* Sorting and reordering procedures */
4593 /* Blocks with a smaller low bound should come first */
4596 compare_blocks (const void *arg1
, const void *arg2
)
4599 struct block
**b1
= (struct block
**) arg1
;
4600 struct block
**b2
= (struct block
**) arg2
;
4602 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4604 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4608 /* Sort the blocks of a symtab S.
4609 Reorder the blocks in the blockvector by code-address,
4610 as required by some MI search routines */
4613 sort_blocks (struct symtab
*s
)
4615 struct blockvector
*bv
= BLOCKVECTOR (s
);
4617 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4620 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4621 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4622 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4623 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4627 * This is very unfortunate: normally all functions are compiled in
4628 * the order they are found, but if the file is compiled -O3 things
4629 * are very different. It would be nice to find a reliable test
4630 * to detect -O3 images in advance.
4632 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4633 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4634 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4635 sizeof (struct block
*),
4640 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4642 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4643 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4644 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4645 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4648 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4649 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4651 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4652 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4653 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4654 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4658 /* Constructor/restructor/destructor procedures */
4660 /* Allocate a new symtab for NAME. Needs an estimate of how many
4661 linenumbers MAXLINES we'll put in it */
4663 static struct symtab
*
4664 new_symtab (char *name
, int maxlines
, struct objfile
*objfile
)
4666 struct symtab
*s
= allocate_symtab (name
, objfile
);
4668 LINETABLE (s
) = new_linetable (maxlines
);
4670 /* All symtabs must have at least two blocks */
4671 BLOCKVECTOR (s
) = new_bvect (2);
4672 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4673 = new_block (NON_FUNCTION_BLOCK
);
4674 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4675 = new_block (NON_FUNCTION_BLOCK
);
4676 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4677 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4679 s
->free_code
= free_linetable
;
4680 s
->debugformat
= "ECOFF";
4684 /* Allocate a new partial_symtab NAME */
4686 static struct partial_symtab
*
4687 new_psymtab (char *name
, struct objfile
*objfile
)
4689 struct partial_symtab
*psymtab
;
4691 psymtab
= allocate_psymtab (name
, objfile
);
4692 psymtab
->section_offsets
= objfile
->section_offsets
;
4694 /* Keep a backpointer to the file's symbols */
4696 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4697 sizeof (struct symloc
));
4698 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4699 CUR_BFD (psymtab
) = cur_bfd
;
4700 DEBUG_SWAP (psymtab
) = debug_swap
;
4701 DEBUG_INFO (psymtab
) = debug_info
;
4702 PENDING_LIST (psymtab
) = pending_list
;
4704 /* The way to turn this into a symtab is to call... */
4705 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4710 /* Allocate a linetable array of the given SIZE. Since the struct
4711 already includes one item, we subtract one when calculating the
4712 proper size to allocate. */
4714 static struct linetable
*
4715 new_linetable (int size
)
4717 struct linetable
*l
;
4719 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4720 l
= (struct linetable
*) xmalloc (size
);
4725 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4726 I am not so sure about the 3.4 ones.
4728 Since the struct linetable already includes one item, we subtract one when
4729 calculating the proper size to allocate. */
4731 static struct linetable
*
4732 shrink_linetable (struct linetable
*lt
)
4735 return (struct linetable
*) xrealloc ((void *) lt
,
4736 (sizeof (struct linetable
)
4738 * sizeof (lt
->item
))));
4741 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4743 static struct blockvector
*
4744 new_bvect (int nblocks
)
4746 struct blockvector
*bv
;
4749 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4750 bv
= (struct blockvector
*) xzalloc (size
);
4752 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4757 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4758 is non-zero, assume the block is associated to a function, and make
4759 sure that the symbols are stored linearly; otherwise, store them
4762 static struct block
*
4763 new_block (enum block_type type
)
4765 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4766 allocate the block. Which, in turn, suggests that the block
4767 should be allocated on an obstack. */
4768 struct block
*retval
= xzalloc (sizeof (struct block
));
4770 if (type
== FUNCTION_BLOCK
)
4771 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4773 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4778 /* Create a new symbol with printname NAME */
4780 static struct symbol
*
4781 new_symbol (char *name
)
4783 struct symbol
*s
= ((struct symbol
*)
4784 obstack_alloc (¤t_objfile
->objfile_obstack
,
4785 sizeof (struct symbol
)));
4787 memset (s
, 0, sizeof (*s
));
4788 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4789 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, current_objfile
);
4793 /* Create a new type with printname NAME */
4795 static struct type
*
4796 new_type (char *name
)
4800 t
= alloc_type (current_objfile
);
4801 TYPE_NAME (t
) = name
;
4802 INIT_CPLUS_SPECIFIC (t
);
4806 /* Read ECOFF debugging information from a BFD section. This is
4807 called from elfread.c. It parses the section into a
4808 ecoff_debug_info struct, and then lets the rest of the file handle
4812 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4813 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4815 bfd
*abfd
= objfile
->obfd
;
4816 struct ecoff_debug_info
*info
;
4817 struct cleanup
*back_to
;
4819 /* FIXME: It's not clear whether we should be getting minimal symbol
4820 information from .mdebug in an ELF file, or whether we will.
4821 Re-initialize the minimal symbol reader in case we do. */
4823 init_minimal_symbol_collection ();
4824 back_to
= make_cleanup_discard_minimal_symbols ();
4826 info
= ((struct ecoff_debug_info
*)
4827 obstack_alloc (&objfile
->objfile_obstack
,
4828 sizeof (struct ecoff_debug_info
)));
4830 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4831 error (_("Error reading ECOFF debugging information: %s"),
4832 bfd_errmsg (bfd_get_error ()));
4834 mdebug_build_psymtabs (objfile
, swap
, info
);
4836 install_minimal_symbols (objfile
);
4837 do_cleanups (back_to
);
4841 _initialize_mdebugread (void)
4843 basic_type_data
= register_objfile_data ();