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
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 2 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, write to the Free Software
25 Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 Boston, MA 02110-1301, USA. */
28 /* This module provides the function mdebug_build_psymtabs. It reads
29 ECOFF debugging information into partial symbol tables. The
30 debugging information is read from two structures. A struct
31 ecoff_debug_swap includes the sizes of each ECOFF structure and
32 swapping routines; these are fixed for a particular target. A
33 struct ecoff_debug_info points to the debugging information for a
34 particular object file.
36 ECOFF symbol tables are mostly written in the byte order of the
37 target machine. However, one section of the table (the auxiliary
38 symbol information) is written in the host byte order. There is a
39 bit in the other symbol info which describes which host byte order
40 was used. ECOFF thereby takes the trophy from Intel `b.out' for
41 the most brain-dead adaptation of a file format to byte order.
43 This module can read all four of the known byte-order combinations,
44 on any type of host. */
51 #include "gdb_obstack.h"
53 #include "stabsread.h"
54 #include "complaints.h"
56 #include "gdb_assert.h"
58 #include "dictionary.h"
59 #include "mdebugread.h"
61 #include "gdb_string.h"
65 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
67 #include "libaout.h" /* Private BFD a.out information. */
68 #include "aout/aout64.h"
69 #include "aout/stab_gnu.h" /* STABS information */
71 #include "expression.h"
73 extern void _initialize_mdebugread (void);
75 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
76 We use this define in order to know whether we should override a
77 symbol's ECOFF section with its ELF section. This is necessary in
78 case the symbol's ELF section could not be represented in ECOFF. */
79 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
80 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
83 /* We put a pointer to this structure in the read_symtab_private field
88 /* Index of the FDR that this psymtab represents. */
90 /* The BFD that the psymtab was created from. */
92 const struct ecoff_debug_swap
*debug_swap
;
93 struct ecoff_debug_info
*debug_info
;
94 struct mdebug_pending
**pending_list
;
95 /* Pointer to external symbols for this file. */
97 /* Size of extern_tab. */
99 enum language pst_language
;
102 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
103 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
104 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
105 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
106 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
107 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
109 #define SC_IS_TEXT(sc) ((sc) == scText \
110 || (sc) == scRConst \
113 #define SC_IS_DATA(sc) ((sc) == scData \
118 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
119 #define SC_IS_BSS(sc) ((sc) == scBss)
120 #define SC_IS_SBSS(sc) ((sc) == scSBss)
121 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
123 /* Various complaints about symbol reading that don't abort the process */
125 index_complaint (const char *arg1
)
127 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
131 unknown_ext_complaint (const char *arg1
)
133 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
137 basic_type_complaint (int arg1
, const char *arg2
)
139 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
144 bad_tag_guess_complaint (const char *arg1
)
146 complaint (&symfile_complaints
, _("guessed tag type of %s incorrectly"), arg1
);
150 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
152 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
157 unexpected_type_code_complaint (const char *arg1
)
159 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
162 /* Macros and extra defs */
164 /* Puns: hard to find whether -g was used and how */
166 #define MIN_GLEVEL GLEVEL_0
167 #define compare_glevel(a,b) \
168 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
169 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
171 /* Things that really are local to this module */
173 /* Remember what we deduced to be the source language of this psymtab. */
175 static enum language psymtab_language
= language_unknown
;
181 /* How to parse debugging information for CUR_BFD. */
183 static const struct ecoff_debug_swap
*debug_swap
;
185 /* Pointers to debugging information for CUR_BFD. */
187 static struct ecoff_debug_info
*debug_info
;
189 /* Pointer to current file decriptor record, and its index */
194 /* Index of current symbol */
198 /* Note how much "debuggable" this image is. We would like
199 to see at least one FDR with full symbols */
201 static int max_gdbinfo
;
202 static int max_glevel
;
204 /* When examining .o files, report on undefined symbols */
206 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
208 /* Pseudo symbol to use when putting stabs into the symbol table. */
210 static char stabs_symbol
[] = STABS_SYMBOL
;
212 /* Types corresponding to mdebug format bt* basic types. */
214 static struct type
*mdebug_type_void
;
215 static struct type
*mdebug_type_char
;
216 static struct type
*mdebug_type_short
;
217 static struct type
*mdebug_type_int_32
;
218 #define mdebug_type_int mdebug_type_int_32
219 static struct type
*mdebug_type_int_64
;
220 static struct type
*mdebug_type_long_32
;
221 static struct type
*mdebug_type_long_64
;
222 static struct type
*mdebug_type_long_long_64
;
223 static struct type
*mdebug_type_unsigned_char
;
224 static struct type
*mdebug_type_unsigned_short
;
225 static struct type
*mdebug_type_unsigned_int_32
;
226 static struct type
*mdebug_type_unsigned_int_64
;
227 static struct type
*mdebug_type_unsigned_long_32
;
228 static struct type
*mdebug_type_unsigned_long_64
;
229 static struct type
*mdebug_type_unsigned_long_long_64
;
230 static struct type
*mdebug_type_adr_32
;
231 static struct type
*mdebug_type_adr_64
;
232 static struct type
*mdebug_type_float
;
233 static struct type
*mdebug_type_double
;
234 static struct type
*mdebug_type_complex
;
235 static struct type
*mdebug_type_double_complex
;
236 static struct type
*mdebug_type_fixed_dec
;
237 static struct type
*mdebug_type_float_dec
;
238 static struct type
*mdebug_type_string
;
240 /* Types for symbols from files compiled without debugging info. */
242 static struct type
*nodebug_func_symbol_type
;
243 static struct type
*nodebug_var_symbol_type
;
245 /* Nonzero if we have seen ecoff debugging info for a file. */
247 static int found_ecoff_debugging_info
;
249 /* Forward declarations */
251 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
254 static void parse_partial_symbols (struct objfile
*);
256 static int has_opaque_xref (FDR
*, SYMR
*);
258 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
259 char **, int, char *);
261 static struct symbol
*new_symbol (char *);
263 static struct type
*new_type (char *);
265 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
267 static struct block
*new_block (enum block_type
);
269 static struct symtab
*new_symtab (char *, int, struct objfile
*);
271 static struct linetable
*new_linetable (int);
273 static struct blockvector
*new_bvect (int);
275 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
278 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
281 static void sort_blocks (struct symtab
*);
283 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
285 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
287 static void add_block (struct block
*, struct symtab
*);
289 static void add_symbol (struct symbol
*, struct block
*);
291 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
293 static struct linetable
*shrink_linetable (struct linetable
*);
295 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
298 static char *mdebug_next_symbol_text (struct objfile
*);
300 /* Exported procedure: Builds a symtab from the PST partial one.
301 Restores the environment in effect when PST was created, delegates
302 most of the work to an ancillary procedure, and sorts
303 and reorders the symtab list at the end */
306 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
314 printf_filtered (_("Reading in symbols for %s..."), pst
->filename
);
315 gdb_flush (gdb_stdout
);
318 next_symbol_text_func
= mdebug_next_symbol_text
;
320 psymtab_to_symtab_1 (pst
, pst
->filename
);
322 /* Match with global symbols. This only needs to be done once,
323 after all of the symtabs and dependencies have been read in. */
324 scan_file_globals (pst
->objfile
);
327 printf_filtered (_("done.\n"));
330 /* File-level interface functions */
332 /* Find a file descriptor given its index RF relative to a file CF */
335 get_rfd (int cf
, int rf
)
341 fdrs
= debug_info
->fdr
;
343 /* Object files do not have the RFD table, all refs are absolute */
346 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
347 ((char *) debug_info
->external_rfd
349 * debug_swap
->external_rfd_size
)),
354 /* Return a safer print NAME for a file descriptor */
360 return "<stripped file>";
363 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
367 /* Read in and parse the symtab of the file OBJFILE. Symbols from
368 different sections are relocated via the SECTION_OFFSETS. */
371 mdebug_build_psymtabs (struct objfile
*objfile
,
372 const struct ecoff_debug_swap
*swap
,
373 struct ecoff_debug_info
*info
)
375 cur_bfd
= objfile
->obfd
;
379 stabsread_new_init ();
380 buildsym_new_init ();
381 free_header_files ();
382 init_header_files ();
384 /* Make sure all the FDR information is swapped in. */
385 if (info
->fdr
== (FDR
*) NULL
)
391 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
392 (info
->symbolic_header
.ifdMax
394 fdr_src
= info
->external_fdr
;
396 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
398 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
399 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
402 parse_partial_symbols (objfile
);
405 /* Check to make sure file was compiled with -g. If not, warn the
406 user of this limitation. */
407 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
409 if (max_gdbinfo
== 0)
410 printf_unfiltered (_("\n%s not compiled with -g, debugging support is limited.\n"),
412 printf_unfiltered (_("You should compile with -g2 or -g3 for best debugging support.\n"));
413 gdb_flush (gdb_stdout
);
418 /* Local utilities */
420 /* Map of FDR indexes to partial symtabs */
424 struct partial_symtab
*pst
; /* the psymtab proper */
425 long n_globals
; /* exported globals (external symbols) */
426 long globals_offset
; /* cumulative */
430 /* Utility stack, used to nest procedures and blocks properly.
431 It is a doubly linked list, to avoid too many alloc/free.
432 Since we might need it quite a few times it is NOT deallocated
435 static struct parse_stack
437 struct parse_stack
*next
, *prev
;
438 struct symtab
*cur_st
; /* Current symtab. */
439 struct block
*cur_block
; /* Block in it. */
441 /* What are we parsing. stFile, or stBlock are for files and
442 blocks. stProc or stStaticProc means we have seen the start of a
443 procedure, but not the start of the block within in. When we see
444 the start of that block, we change it to stNil, without pushing a
445 new block, i.e. stNil means both a procedure and a block. */
449 struct type
*cur_type
; /* Type we parse fields for. */
450 int cur_field
; /* Field number in cur_type. */
451 CORE_ADDR procadr
; /* Start addres of this procedure */
452 int numargs
; /* Its argument count */
455 *top_stack
; /* Top stack ptr */
458 /* Enter a new lexical context */
461 push_parse_stack (void)
463 struct parse_stack
*new;
465 /* Reuse frames if possible */
466 if (top_stack
&& top_stack
->prev
)
467 new = top_stack
->prev
;
469 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
470 /* Initialize new frame with previous content */
473 struct parse_stack
*prev
= new->prev
;
476 top_stack
->prev
= new;
478 new->next
= top_stack
;
483 /* Exit a lexical context */
486 pop_parse_stack (void)
491 top_stack
= top_stack
->next
;
495 /* Cross-references might be to things we haven't looked at
496 yet, e.g. type references. To avoid too many type
497 duplications we keep a quick fixup table, an array
498 of lists of references indexed by file descriptor */
500 struct mdebug_pending
502 struct mdebug_pending
*next
; /* link */
503 char *s
; /* the unswapped symbol */
504 struct type
*t
; /* its partial type descriptor */
508 /* The pending information is kept for an entire object file, and used
509 to be in the deprecated_sym_private field. I took it out when I
510 split mdebugread from mipsread, because this might not be the only
511 type of symbols read from an object file. Instead, we allocate the
512 pending information table when we create the partial symbols, and
513 we store a pointer to the single table in each psymtab. */
515 static struct mdebug_pending
**pending_list
;
517 /* Check whether we already saw symbol SH in file FH */
519 static struct mdebug_pending
*
520 is_pending_symbol (FDR
*fh
, char *sh
)
522 int f_idx
= fh
- debug_info
->fdr
;
523 struct mdebug_pending
*p
;
525 /* Linear search is ok, list is typically no more than 10 deep */
526 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
532 /* Add a new symbol SH of type T */
535 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
537 int f_idx
= fh
- debug_info
->fdr
;
538 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
540 /* Make sure we do not make duplicates */
543 p
= ((struct mdebug_pending
*)
544 obstack_alloc (¤t_objfile
->objfile_obstack
,
545 sizeof (struct mdebug_pending
)));
548 p
->next
= pending_list
[f_idx
];
549 pending_list
[f_idx
] = p
;
554 /* Parsing Routines proper. */
556 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
557 For blocks, procedures and types we open a new lexical context.
558 This is basically just a big switch on the symbol's type. Argument
559 AX is the base pointer of aux symbols for this file (fh->iauxBase).
560 EXT_SH points to the unswapped symbol, which is needed for struct,
561 union, etc., types; it is NULL for an EXTR. BIGEND says whether
562 aux symbols are big-endian or little-endian. Return count of
563 SYMR's handled (normally one). */
566 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
567 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
569 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
570 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
574 struct mdebug_pending
*pend
;
578 enum address_class
class;
580 long svalue
= sh
->value
;
583 if (ext_sh
== (char *) NULL
)
584 name
= debug_info
->ssext
+ sh
->iss
;
586 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
592 /* Do not relocate relative values.
593 The value of a stEnd symbol is the displacement from the
594 corresponding start symbol value.
595 The value of a stBlock symbol is the displacement from the
596 procedure address. */
597 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
598 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
605 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
609 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
618 case stGlobal
: /* external symbol, goes into global block */
620 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
622 s
= new_symbol (name
);
623 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
626 case stStatic
: /* static data, goes into current block. */
628 b
= top_stack
->cur_block
;
629 s
= new_symbol (name
);
630 if (SC_IS_COMMON (sh
->sc
))
632 /* It is a FORTRAN common block. At least for SGI Fortran the
633 address is not in the symbol; we need to fix it later in
634 scan_file_globals. */
635 int bucket
= hashname (DEPRECATED_SYMBOL_NAME (s
));
636 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
637 global_sym_chain
[bucket
] = s
;
640 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
643 case stLocal
: /* local variable, goes into current block */
644 if (sh
->sc
== scRegister
)
646 class = LOC_REGISTER
;
647 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
651 b
= top_stack
->cur_block
;
652 s
= new_symbol (name
);
653 SYMBOL_VALUE (s
) = svalue
;
655 data
: /* Common code for symbols describing data */
656 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
657 SYMBOL_CLASS (s
) = class;
660 /* Type could be missing if file is compiled without debugging info. */
661 if (SC_IS_UNDEF (sh
->sc
)
662 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
663 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
665 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
666 /* Value of a data symbol is its memory address */
669 case stParam
: /* arg to procedure, goes into current block */
671 found_ecoff_debugging_info
= 1;
672 top_stack
->numargs
++;
674 /* Special GNU C++ name. */
675 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
676 name
= "this"; /* FIXME, not alloc'd in obstack */
677 s
= new_symbol (name
);
679 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
683 /* Pass by value in register. */
684 SYMBOL_CLASS (s
) = LOC_REGPARM
;
685 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
688 /* Pass by reference on stack. */
689 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
692 /* Pass by reference in register. */
693 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
694 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
697 /* Pass by value on stack. */
698 SYMBOL_CLASS (s
) = LOC_ARG
;
701 SYMBOL_VALUE (s
) = svalue
;
702 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
703 add_symbol (s
, top_stack
->cur_block
);
706 case stLabel
: /* label, goes into current block */
707 s
= new_symbol (name
);
708 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* so that it can be used */
709 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
710 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
711 SYMBOL_TYPE (s
) = mdebug_type_int
;
712 add_symbol (s
, top_stack
->cur_block
);
715 case stProc
: /* Procedure, usually goes into global block */
716 case stStaticProc
: /* Static procedure, goes into current block */
717 /* For stProc symbol records, we need to check the storage class
718 as well, as only (stProc, scText) entries represent "real"
719 procedures - See the Compaq document titled "Object File /
720 Symbol Table Format Specification" for more information.
721 If the storage class is not scText, we discard the whole block
722 of symbol records for this stProc. */
723 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
725 char *ext_tsym
= ext_sh
;
726 int keep_counting
= 1;
729 while (keep_counting
)
731 ext_tsym
+= external_sym_size
;
732 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
742 complaint (&symfile_complaints
,
743 _("unknown symbol type 0x%x"), sh
->st
);
749 s
= new_symbol (name
);
750 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
751 SYMBOL_CLASS (s
) = LOC_BLOCK
;
752 /* Type of the return value */
753 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
757 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
758 if (strcmp (name
, "malloc") == 0
759 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
761 /* I don't know why, but, at least under Alpha GNU/Linux,
762 when linking against a malloc without debugging
763 symbols, its read as a function returning void---this
764 is bad because it means we cannot call functions with
765 string arguments interactively; i.e., "call
766 printf("howdy\n")" would fail with the error message
767 "program has no memory available". To avoid this, we
768 patch up the type and make it void*
769 instead. (davidm@azstarnet.com)
771 t
= make_pointer_type (t
, NULL
);
774 b
= top_stack
->cur_block
;
775 if (sh
->st
== stProc
)
777 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
778 /* The next test should normally be true, but provides a
779 hook for nested functions (which we don't want to make
781 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
782 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
783 /* Irix 5 sometimes has duplicate names for the same
784 function. We want to add such names up at the global
785 level, not as a nested function. */
786 else if (sh
->value
== top_stack
->procadr
)
787 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
791 /* Make a type for the procedure itself */
792 SYMBOL_TYPE (s
) = lookup_function_type (t
);
794 /* All functions in C++ have prototypes. For C we don't have enough
795 information in the debug info. */
796 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
797 TYPE_FLAGS (SYMBOL_TYPE (s
)) |= TYPE_FLAG_PROTOTYPED
;
799 /* Create and enter a new lexical context */
800 b
= new_block (FUNCTION_BLOCK
);
801 SYMBOL_BLOCK_VALUE (s
) = b
;
802 BLOCK_FUNCTION (b
) = s
;
803 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
804 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
805 add_block (b
, top_stack
->cur_st
);
807 /* Not if we only have partial info */
808 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
812 top_stack
->cur_block
= b
;
813 top_stack
->blocktype
= sh
->st
;
814 top_stack
->cur_type
= SYMBOL_TYPE (s
);
815 top_stack
->cur_field
= -1;
816 top_stack
->procadr
= sh
->value
;
817 top_stack
->numargs
= 0;
820 /* Beginning of code for structure, union, and enum definitions.
821 They all share a common set of local variables, defined here. */
823 enum type_code type_code
;
829 case stStruct
: /* Start a block defining a struct type */
830 type_code
= TYPE_CODE_STRUCT
;
831 goto structured_common
;
833 case stUnion
: /* Start a block defining a union type */
834 type_code
= TYPE_CODE_UNION
;
835 goto structured_common
;
837 case stEnum
: /* Start a block defining an enum type */
838 type_code
= TYPE_CODE_ENUM
;
839 goto structured_common
;
841 case stBlock
: /* Either a lexical block, or some type */
842 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
843 goto case_stBlock_code
; /* Lexical block */
845 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
847 /* Common code for handling struct, union, enum, and/or as-yet-
848 unknown-type blocks of info about structured data. `type_code'
849 has been set to the proper TYPE_CODE, if we know it. */
851 found_ecoff_debugging_info
= 1;
853 top_stack
->blocktype
= stBlock
;
855 /* First count the number of fields and the highest value. */
858 for (ext_tsym
= ext_sh
+ external_sym_size
;
860 ext_tsym
+= external_sym_size
)
864 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
869 /* C++ encodes class types as structures where there the
870 methods are encoded as stProc. The scope of stProc
871 symbols also ends with stEnd, thus creating a risk of
872 taking the wrong stEnd symbol record as the end of
873 the current struct, which would cause GDB to undercount
874 the real number of fields in this struct. To make sure
875 we really reached the right stEnd symbol record, we
876 check the associated name, and match it against the
877 struct name. Since method names are mangled while
878 the class name is not, there is no risk of having a
879 method whose name is identical to the class name
880 (in particular constructor method names are different
881 from the class name). There is therefore no risk that
882 this check stops the count on the StEnd of a method.
884 Also, assume that we're really at the end when tsym.iss
886 if (tsym
.iss
== issNull
887 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
893 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
895 /* If the type of the member is Nil (or Void),
896 without qualifiers, assume the tag is an
898 Alpha cc -migrate enums are recognized by a zero
899 index and a zero symbol value.
900 DU 4.0 cc enums are recognized by a member type of
901 btEnum without qualifiers and a zero symbol value. */
902 if (tsym
.index
== indexNil
903 || (tsym
.index
== 0 && sh
->value
== 0))
904 type_code
= TYPE_CODE_ENUM
;
907 (*debug_swap
->swap_tir_in
) (bigend
,
908 &ax
[tsym
.index
].a_ti
,
910 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
911 || (tir
.bt
== btEnum
&& sh
->value
== 0))
913 type_code
= TYPE_CODE_ENUM
;
917 if (tsym
.value
> max_value
)
918 max_value
= tsym
.value
;
927 /* This is a no-op; is it trying to tell us something
928 we should be checking? */
929 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
933 /* This is something like a struct within a
934 struct. Skip over the fields of the inner
935 struct. The -1 is because the for loop will
936 increment ext_tsym. */
937 ext_tsym
= ((char *) debug_info
->external_sym
938 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
939 * external_sym_size
));
945 /* mips cc puts out a typedef for struct x if it is not yet
946 defined when it encounters
947 struct y { struct x *xp; };
952 /* Irix5 cc puts out a stIndirect for struct x if it is not
953 yet defined when it encounters
954 struct y { struct x *xp; };
959 complaint (&symfile_complaints
,
960 _("declaration block contains unhandled symbol type %d"),
966 /* In an stBlock, there is no way to distinguish structs,
967 unions, and enums at this point. This is a bug in the
968 original design (that has been fixed with the recent
969 addition of the stStruct, stUnion, and stEnum symbol
970 types.) The way you can tell is if/when you see a variable
971 or field of that type. In that case the variable's type
972 (in the AUX table) says if the type is struct, union, or
973 enum, and points back to the stBlock here. So you can
974 patch the tag kind up later - but only if there actually is
975 a variable or field of that type.
977 So until we know for sure, we will guess at this point.
979 If the first member has index==indexNil or a void type,
980 assume we have an enumeration.
981 Otherwise, if there is more than one member, and all
982 the members have offset 0, assume we have a union.
983 Otherwise, assume we have a struct.
985 The heuristic could guess wrong in the case of of an
986 enumeration with no members or a union with one (or zero)
987 members, or when all except the last field of a struct have
988 width zero. These are uncommon and/or illegal situations,
989 and in any case guessing wrong probably doesn't matter
992 But if we later do find out we were wrong, we fixup the tag
993 kind. Members of an enumeration must be handled
994 differently from struct/union fields, and that is harder to
995 patch up, but luckily we shouldn't need to. (If there are
996 any enumeration members, we can tell for sure it's an enum
999 if (type_code
== TYPE_CODE_UNDEF
)
1001 if (nfields
> 1 && max_value
== 0)
1002 type_code
= TYPE_CODE_UNION
;
1004 type_code
= TYPE_CODE_STRUCT
;
1007 /* Create a new type or use the pending type. */
1008 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1009 if (pend
== (struct mdebug_pending
*) NULL
)
1011 t
= new_type (NULL
);
1012 add_pending (cur_fdr
, ext_sh
, t
);
1017 /* Do not set the tag name if it is a compiler generated tag name
1018 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1019 Alpha cc puts out an sh->iss of zero for those. */
1020 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1021 TYPE_TAG_NAME (t
) = NULL
;
1023 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->objfile_obstack
,
1026 TYPE_CODE (t
) = type_code
;
1027 TYPE_LENGTH (t
) = sh
->value
;
1028 TYPE_NFIELDS (t
) = nfields
;
1029 TYPE_FIELDS (t
) = f
= ((struct field
*)
1031 nfields
* sizeof (struct field
)));
1033 if (type_code
== TYPE_CODE_ENUM
)
1035 int unsigned_enum
= 1;
1037 /* This is a non-empty enum. */
1039 /* DEC c89 has the number of enumerators in the sh.value field,
1040 not the type length, so we have to compensate for that
1041 incompatibility quirk.
1042 This might do the wrong thing for an enum with one or two
1043 enumerators and gcc -gcoff -fshort-enums, but these cases
1044 are hopefully rare enough.
1045 Alpha cc -migrate has a sh.value field of zero, we adjust
1047 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1048 || TYPE_LENGTH (t
) == 0)
1050 gdbarch_int_bit (current_gdbarch
) / HOST_CHAR_BIT
;
1051 for (ext_tsym
= ext_sh
+ external_sym_size
;
1053 ext_tsym
+= external_sym_size
)
1056 struct symbol
*enum_sym
;
1058 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1060 if (tsym
.st
!= stMember
)
1063 FIELD_BITPOS (*f
) = tsym
.value
;
1064 FIELD_TYPE (*f
) = t
;
1065 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1066 FIELD_BITSIZE (*f
) = 0;
1067 FIELD_STATIC_KIND (*f
) = 0;
1069 enum_sym
= ((struct symbol
*)
1070 obstack_alloc (¤t_objfile
->objfile_obstack
,
1071 sizeof (struct symbol
)));
1072 memset (enum_sym
, 0, sizeof (struct symbol
));
1073 DEPRECATED_SYMBOL_NAME (enum_sym
) =
1074 obsavestring (f
->name
, strlen (f
->name
),
1075 ¤t_objfile
->objfile_obstack
);
1076 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1077 SYMBOL_TYPE (enum_sym
) = t
;
1078 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1079 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1080 if (SYMBOL_VALUE (enum_sym
) < 0)
1082 add_symbol (enum_sym
, top_stack
->cur_block
);
1084 /* Skip the stMembers that we've handled. */
1089 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1091 /* make this the current type */
1092 top_stack
->cur_type
= t
;
1093 top_stack
->cur_field
= 0;
1095 /* Do not create a symbol for alpha cc unnamed structs. */
1099 /* gcc puts out an empty struct for an opaque struct definitions,
1100 do not create a symbol for it either. */
1101 if (TYPE_NFIELDS (t
) == 0)
1103 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1107 s
= new_symbol (name
);
1108 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1109 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1110 SYMBOL_VALUE (s
) = 0;
1111 SYMBOL_TYPE (s
) = t
;
1112 add_symbol (s
, top_stack
->cur_block
);
1115 /* End of local variables shared by struct, union, enum, and
1116 block (as yet unknown struct/union/enum) processing. */
1120 found_ecoff_debugging_info
= 1;
1121 /* beginnning of (code) block. Value of symbol
1122 is the displacement from procedure start */
1123 push_parse_stack ();
1125 /* Do not start a new block if this is the outermost block of a
1126 procedure. This allows the LOC_BLOCK symbol to point to the
1127 block with the local variables, so funcname::var works. */
1128 if (top_stack
->blocktype
== stProc
1129 || top_stack
->blocktype
== stStaticProc
)
1131 top_stack
->blocktype
= stNil
;
1135 top_stack
->blocktype
= stBlock
;
1136 b
= new_block (NON_FUNCTION_BLOCK
);
1137 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1138 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1139 top_stack
->cur_block
= b
;
1140 add_block (b
, top_stack
->cur_st
);
1143 case stEnd
: /* end (of anything) */
1144 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1146 /* Finished with type */
1147 top_stack
->cur_type
= 0;
1149 else if (sh
->sc
== scText
&&
1150 (top_stack
->blocktype
== stProc
||
1151 top_stack
->blocktype
== stStaticProc
))
1153 /* Finished with procedure */
1154 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1155 struct mdebug_extra_func_info
*e
;
1156 struct block
*b
= top_stack
->cur_block
;
1157 struct type
*ftype
= top_stack
->cur_type
;
1160 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1162 /* Make up special symbol to contain procedure specific info */
1163 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1164 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1165 SYMBOL_CLASS (s
) = LOC_CONST
;
1166 SYMBOL_TYPE (s
) = mdebug_type_void
;
1167 e
= ((struct mdebug_extra_func_info
*)
1168 obstack_alloc (¤t_objfile
->objfile_obstack
,
1169 sizeof (struct mdebug_extra_func_info
)));
1170 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1171 SYMBOL_VALUE (s
) = (long) e
;
1172 e
->numargs
= top_stack
->numargs
;
1173 e
->pdr
.framereg
= -1;
1174 add_symbol (s
, top_stack
->cur_block
);
1176 /* f77 emits proc-level with address bounds==[0,0],
1177 So look for such child blocks, and patch them. */
1178 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1180 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1181 if (BLOCK_SUPERBLOCK (b_bad
) == b
1182 && BLOCK_START (b_bad
) == top_stack
->procadr
1183 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1185 BLOCK_START (b_bad
) = BLOCK_START (b
);
1186 BLOCK_END (b_bad
) = BLOCK_END (b
);
1190 if (TYPE_NFIELDS (ftype
) <= 0)
1192 /* No parameter type information is recorded with the function's
1193 type. Set that from the type of the parameter symbols. */
1194 int nparams
= top_stack
->numargs
;
1200 struct dict_iterator iter
;
1201 TYPE_NFIELDS (ftype
) = nparams
;
1202 TYPE_FIELDS (ftype
) = (struct field
*)
1203 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1206 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1208 if (iparams
== nparams
)
1211 switch (SYMBOL_CLASS (sym
))
1216 case LOC_REGPARM_ADDR
:
1217 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1218 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1228 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1230 /* End of (code) block. The value of the symbol is the
1231 displacement from the procedure`s start address of the
1232 end of this block. */
1233 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1235 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1237 /* End of outermost block. Pop parse stack and ignore. The
1238 following stEnd of stProc will take care of the block. */
1241 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1243 /* End of file. Pop parse stack and ignore. Higher
1244 level code deals with this. */
1248 complaint (&symfile_complaints
,
1249 _("stEnd with storage class %d not handled"), sh
->sc
);
1251 pop_parse_stack (); /* restore previous lexical context */
1254 case stMember
: /* member of struct or union */
1255 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1256 FIELD_NAME (*f
) = name
;
1257 FIELD_BITPOS (*f
) = sh
->value
;
1259 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1260 FIELD_BITSIZE (*f
) = bitsize
;
1261 FIELD_STATIC_KIND (*f
) = 0;
1264 case stIndirect
: /* forward declaration on Irix5 */
1265 /* Forward declarations from Irix5 cc are handled by cross_ref,
1269 case stTypedef
: /* type definition */
1270 found_ecoff_debugging_info
= 1;
1272 /* Typedefs for forward declarations and opaque structs from alpha cc
1273 are handled by cross_ref, skip them. */
1277 /* Parse the type or use the pending type. */
1278 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1279 if (pend
== (struct mdebug_pending
*) NULL
)
1281 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1282 add_pending (cur_fdr
, ext_sh
, t
);
1287 /* mips cc puts out a typedef with the name of the struct for forward
1288 declarations. These should not go into the symbol table and
1289 TYPE_NAME should not be set for them.
1290 They can't be distinguished from an intentional typedef to
1291 the same name however:
1293 struct x { int ix; int jx; };
1297 struct xx {int ixx; int jxx; };
1298 generates a cross referencing stTypedef for x and xx.
1299 The user visible effect of this is that the type of a pointer
1300 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1301 The problem is fixed with alpha cc and Irix5 cc. */
1303 /* However if the typedef cross references to an opaque aggregate, it
1304 is safe to omit it from the symbol table. */
1306 if (has_opaque_xref (cur_fdr
, sh
))
1308 s
= new_symbol (name
);
1309 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1310 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1311 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1312 SYMBOL_TYPE (s
) = t
;
1313 add_symbol (s
, top_stack
->cur_block
);
1315 /* Incomplete definitions of structs should not get a name. */
1316 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1317 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1318 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1319 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1321 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1322 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1324 /* If we are giving a name to a type such as "pointer to
1325 foo" or "function returning foo", we better not set
1326 the TYPE_NAME. If the program contains "typedef char
1327 *caddr_t;", we don't want all variables of type char
1328 * to print as caddr_t. This is not just a
1329 consequence of GDB's type management; CC and GCC (at
1330 least through version 2.4) both output variables of
1331 either type char * or caddr_t with the type
1332 refering to the stTypedef symbol for caddr_t. If a future
1333 compiler cleans this up it GDB is not ready for it
1334 yet, but if it becomes ready we somehow need to
1335 disable this check (without breaking the PCC/GCC2.4
1340 Fortunately, this check seems not to be necessary
1341 for anything except pointers or functions. */
1344 TYPE_NAME (SYMBOL_TYPE (s
)) = DEPRECATED_SYMBOL_NAME (s
);
1348 case stFile
: /* file name */
1349 push_parse_stack ();
1350 top_stack
->blocktype
= sh
->st
;
1353 /* I`ve never seen these for C */
1355 break; /* register relocation */
1357 break; /* forwarding address */
1359 break; /* constant */
1361 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1368 /* Parse the type information provided in the raw AX entries for
1369 the symbol SH. Return the bitfield size in BS, in case.
1370 We must byte-swap the AX entries before we use them; BIGEND says whether
1371 they are big-endian or little-endian (from fh->fBigendian). */
1373 static struct type
*
1374 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1375 int bigend
, char *sym_name
)
1377 /* Null entries in this map are treated specially */
1378 static struct type
**map_bt
[] =
1380 &mdebug_type_void
, /* btNil */
1381 &mdebug_type_adr_32
, /* btAdr */
1382 &mdebug_type_char
, /* btChar */
1383 &mdebug_type_unsigned_char
, /* btUChar */
1384 &mdebug_type_short
, /* btShort */
1385 &mdebug_type_unsigned_short
, /* btUShort */
1386 &mdebug_type_int_32
, /* btInt */
1387 &mdebug_type_unsigned_int_32
, /* btUInt */
1388 &mdebug_type_long_32
, /* btLong */
1389 &mdebug_type_unsigned_long_32
, /* btULong */
1390 &mdebug_type_float
, /* btFloat */
1391 &mdebug_type_double
, /* btDouble */
1398 &mdebug_type_complex
, /* btComplex */
1399 &mdebug_type_double_complex
, /* btDComplex */
1401 &mdebug_type_fixed_dec
, /* btFixedDec */
1402 &mdebug_type_float_dec
, /* btFloatDec */
1403 &mdebug_type_string
, /* btString */
1406 &mdebug_type_void
, /* btVoid */
1407 0, /* DEC C++: Pointer to member */
1408 0, /* DEC C++: Virtual function table */
1409 0, /* DEC C++: Class (Record) */
1410 &mdebug_type_long_64
, /* btLong64 */
1411 &mdebug_type_unsigned_long_64
, /* btULong64 */
1412 &mdebug_type_long_long_64
, /* btLongLong64 */
1413 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1414 &mdebug_type_adr_64
, /* btAdr64 */
1415 &mdebug_type_int_64
, /* btInt64 */
1416 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1420 struct type
*tp
= 0;
1421 enum type_code type_code
= TYPE_CODE_UNDEF
;
1423 /* Handle undefined types, they have indexNil. */
1424 if (aux_index
== indexNil
)
1425 return mdebug_type_int
;
1427 /* Handle corrupt aux indices. */
1428 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1430 index_complaint (sym_name
);
1431 return mdebug_type_int
;
1435 /* Use aux as a type information record, map its basic type. */
1436 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1437 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1439 basic_type_complaint (t
->bt
, sym_name
);
1440 return mdebug_type_int
;
1444 tp
= *map_bt
[t
->bt
];
1449 /* Cannot use builtin types -- build our own */
1453 type_code
= TYPE_CODE_STRUCT
;
1456 type_code
= TYPE_CODE_UNION
;
1459 type_code
= TYPE_CODE_ENUM
;
1462 type_code
= TYPE_CODE_RANGE
;
1465 type_code
= TYPE_CODE_SET
;
1468 /* alpha cc -migrate uses this for typedefs. The true type will
1469 be obtained by crossreferencing below. */
1470 type_code
= TYPE_CODE_ERROR
;
1473 /* alpha cc uses this for typedefs. The true type will be
1474 obtained by crossreferencing below. */
1475 type_code
= TYPE_CODE_ERROR
;
1478 basic_type_complaint (t
->bt
, sym_name
);
1479 return mdebug_type_int
;
1483 /* Move on to next aux */
1488 int width
= AUX_GET_WIDTH (bigend
, ax
);
1489 /* Inhibit core dumps if TIR is corrupted. */
1490 if (bs
== (int *) NULL
)
1492 /* Alpha cc -migrate encodes char and unsigned char types
1493 as short and unsigned short types with a field width of 8.
1494 Enum types also have a field width which we ignore for now. */
1495 if (t
->bt
== btShort
&& width
== 8)
1496 tp
= mdebug_type_char
;
1497 else if (t
->bt
== btUShort
&& width
== 8)
1498 tp
= mdebug_type_unsigned_char
;
1499 else if (t
->bt
== btEnum
)
1502 complaint (&symfile_complaints
, _("can't handle TIR fBitfield for %s"),
1510 /* A btIndirect entry cross references to an aux entry containing
1512 if (t
->bt
== btIndirect
)
1519 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1521 if (rn
->rfd
== 0xfff)
1523 rf
= AUX_GET_ISYM (bigend
, ax
);
1531 complaint (&symfile_complaints
,
1532 _("unable to cross ref btIndirect for %s"), sym_name
);
1533 return mdebug_type_int
;
1535 xref_fh
= get_rfd (fd
, rf
);
1536 xref_fd
= xref_fh
- debug_info
->fdr
;
1537 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1538 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1541 /* All these types really point to some (common) MIPS type
1542 definition, and only the type-qualifiers fully identify
1543 them. We'll make the same effort at sharing. */
1544 if (t
->bt
== btStruct
||
1548 /* btSet (I think) implies that the name is a tag name, not a typedef
1549 name. This apparently is a MIPS extension for C sets. */
1554 /* Try to cross reference this type, build new type on failure. */
1555 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1556 if (tp
== (struct type
*) NULL
)
1557 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1559 /* DEC c89 produces cross references to qualified aggregate types,
1560 dereference them. */
1561 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1562 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1563 tp
= TYPE_TARGET_TYPE (tp
);
1565 /* Make sure that TYPE_CODE(tp) has an expected type code.
1566 Any type may be returned from cross_ref if file indirect entries
1568 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1569 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1570 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1572 unexpected_type_code_complaint (sym_name
);
1577 /* Usually, TYPE_CODE(tp) is already type_code. The main
1578 exception is if we guessed wrong re struct/union/enum.
1579 But for struct vs. union a wrong guess is harmless, so
1580 don't complain(). */
1581 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1582 && type_code
!= TYPE_CODE_ENUM
)
1583 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1584 && type_code
== TYPE_CODE_ENUM
))
1586 bad_tag_guess_complaint (sym_name
);
1589 if (TYPE_CODE (tp
) != type_code
)
1591 TYPE_CODE (tp
) = type_code
;
1594 /* Do not set the tag name if it is a compiler generated tag name
1595 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1596 if (name
[0] == '.' || name
[0] == '\0')
1597 TYPE_TAG_NAME (tp
) = NULL
;
1598 else if (TYPE_TAG_NAME (tp
) == NULL
1599 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1600 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1601 ¤t_objfile
->objfile_obstack
);
1605 /* All these types really point to some (common) MIPS type
1606 definition, and only the type-qualifiers fully identify
1607 them. We'll make the same effort at sharing.
1608 FIXME: We are not doing any guessing on range types. */
1609 if (t
->bt
== btRange
)
1613 /* Try to cross reference this type, build new type on failure. */
1614 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1615 if (tp
== (struct type
*) NULL
)
1616 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1618 /* Make sure that TYPE_CODE(tp) has an expected type code.
1619 Any type may be returned from cross_ref if file indirect entries
1621 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1623 unexpected_type_code_complaint (sym_name
);
1627 /* Usually, TYPE_CODE(tp) is already type_code. The main
1628 exception is if we guessed wrong re struct/union/enum. */
1629 if (TYPE_CODE (tp
) != type_code
)
1631 bad_tag_guess_complaint (sym_name
);
1632 TYPE_CODE (tp
) = type_code
;
1634 if (TYPE_NAME (tp
) == NULL
1635 || strcmp (TYPE_NAME (tp
), name
) != 0)
1636 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1637 ¤t_objfile
->objfile_obstack
);
1640 if (t
->bt
== btTypedef
)
1644 /* Try to cross reference this type, it should succeed. */
1645 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1646 if (tp
== (struct type
*) NULL
)
1648 complaint (&symfile_complaints
,
1649 _("unable to cross ref btTypedef for %s"), sym_name
);
1650 tp
= mdebug_type_int
;
1654 /* Deal with range types */
1655 if (t
->bt
== btRange
)
1657 TYPE_NFIELDS (tp
) = 2;
1658 TYPE_FIELDS (tp
) = ((struct field
*)
1659 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1660 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1661 ¤t_objfile
->objfile_obstack
);
1662 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1664 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1665 ¤t_objfile
->objfile_obstack
);
1666 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1670 /* Parse all the type qualifiers now. If there are more
1671 than 6 the game will continue in the next aux */
1675 #define PARSE_TQ(tq) \
1676 if (t->tq != tqNil) \
1677 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1689 /* mips cc 2.x and gcc never put out continued aux entries. */
1693 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1697 /* Complain for illegal continuations due to corrupt aux entries. */
1699 complaint (&symfile_complaints
, _("illegal TIR continued for %s"), sym_name
);
1704 /* Make up a complex type from a basic one. Type is passed by
1705 reference in TPP and side-effected as necessary. The type
1706 qualifier TQ says how to handle the aux symbols at AX for
1707 the symbol SX we are currently analyzing. BIGEND says whether
1708 aux symbols are big-endian or little-endian.
1709 Returns the number of aux symbols we parsed. */
1712 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1718 /* Used in array processing */
1729 t
= lookup_pointer_type (*tpp
);
1734 t
= lookup_function_type (*tpp
);
1741 /* Determine and record the domain type (type of index) */
1742 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1748 rf
= AUX_GET_ISYM (bigend
, ax
);
1751 fh
= get_rfd (fd
, rf
);
1753 indx
= parse_type (fh
- debug_info
->fdr
,
1754 debug_info
->external_aux
+ fh
->iauxBase
,
1755 id
, (int *) NULL
, bigend
, sym_name
);
1757 /* The bounds type should be an integer type, but might be anything
1758 else due to corrupt aux entries. */
1759 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1761 complaint (&symfile_complaints
,
1762 _("illegal array index type for %s, assuming int"), sym_name
);
1763 indx
= mdebug_type_int
;
1766 /* Get the bounds, and create the array type. */
1768 lower
= AUX_GET_DNLOW (bigend
, ax
);
1770 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1772 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1774 range
= create_range_type ((struct type
*) NULL
, indx
,
1777 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1779 /* We used to fill in the supplied array element bitsize
1780 here if the TYPE_LENGTH of the target type was zero.
1781 This happens for a `pointer to an array of anonymous structs',
1782 but in this case the array element bitsize is also zero,
1783 so nothing is gained.
1784 And we used to check the TYPE_LENGTH of the target type against
1785 the supplied array element bitsize.
1786 gcc causes a mismatch for `pointer to array of object',
1787 since the sdb directives it uses do not have a way of
1788 specifying the bitsize, but it does no harm (the
1789 TYPE_LENGTH should be correct) and we should be able to
1790 ignore the erroneous bitsize from the auxiliary entry safely.
1791 dbx seems to ignore it too. */
1793 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1795 if (TYPE_LENGTH (*tpp
) == 0)
1797 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1804 /* Volatile -- currently ignored */
1808 /* Const -- currently ignored */
1812 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1818 /* Parse a procedure descriptor record PR. Note that the procedure is
1819 parsed _after_ the local symbols, now we just insert the extra
1820 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1821 already been placed in the procedure's main block. Note also that
1822 images that have been partially stripped (ld -x) have been deprived
1823 of local symbols, and we have to cope with them here. FIRST_OFF is
1824 the offset of the first procedure for this FDR; we adjust the
1825 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1826 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1827 in question, or NULL to use top_stack->cur_block. */
1829 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1832 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1833 struct partial_symtab
*pst
)
1835 struct symbol
*s
, *i
;
1837 struct mdebug_extra_func_info
*e
;
1840 /* Simple rule to find files linked "-x" */
1841 if (cur_fdr
->rss
== -1)
1845 /* Static procedure at address pr->adr. Sigh. */
1846 /* FIXME-32x64. assuming pr->adr fits in long. */
1847 complaint (&symfile_complaints
,
1848 _("can't handle PDR for static proc at 0x%lx"),
1849 (unsigned long) pr
->adr
);
1857 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1858 ((char *) debug_info
->external_ext
1860 * debug_swap
->external_ext_size
)),
1862 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1870 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1871 ((char *) debug_info
->external_sym
1872 + ((cur_fdr
->isymBase
+ pr
->isym
)
1873 * debug_swap
->external_sym_size
)),
1875 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1878 if (search_symtab
!= NULL
)
1881 /* This loses both in the case mentioned (want a static, find a global),
1882 but also if we are looking up a non-mangled name which happens to
1883 match the name of a mangled function. */
1884 /* We have to save the cur_fdr across the call to lookup_symbol.
1885 If the pdr is for a static function and if a global function with
1886 the same name exists, lookup_symbol will eventually read in the symtab
1887 for the global function and clobber cur_fdr. */
1888 FDR
*save_cur_fdr
= cur_fdr
;
1889 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0, NULL
);
1890 cur_fdr
= save_cur_fdr
;
1894 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1900 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1901 VAR_DOMAIN
, LOC_BLOCK
);
1905 b
= SYMBOL_BLOCK_VALUE (s
);
1909 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
1913 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1914 s
= new_symbol (sh_name
);
1915 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1916 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1917 /* Donno its type, hope int is ok */
1918 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1919 add_symbol (s
, top_stack
->cur_block
);
1920 /* Wont have symbols for this one */
1922 SYMBOL_BLOCK_VALUE (s
) = b
;
1923 BLOCK_FUNCTION (b
) = s
;
1924 BLOCK_START (b
) = pr
->adr
;
1925 /* BOUND used to be the end of procedure's text, but the
1926 argument is no longer passed in. */
1927 BLOCK_END (b
) = bound
;
1928 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1929 add_block (b
, top_stack
->cur_st
);
1933 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
1937 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE (i
);
1939 e
->pdr
.isym
= (long) s
;
1941 /* GDB expects the absolute function start address for the
1942 procedure descriptor in e->pdr.adr.
1943 As the address in the procedure descriptor is usually relative,
1944 we would have to relocate e->pdr.adr with cur_fdr->adr and
1945 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1946 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1947 in shared libraries on some systems, and on other systems
1948 e->pdr.adr is sometimes offset by a bogus value.
1949 To work around these problems, we replace e->pdr.adr with
1950 the start address of the function. */
1951 e
->pdr
.adr
= BLOCK_START (b
);
1953 /* Correct incorrect setjmp procedure descriptor from the library
1954 to make backtrace through setjmp work. */
1955 if (e
->pdr
.pcreg
== 0
1956 && strcmp (sh_name
, "setjmp") == 0)
1958 complaint (&symfile_complaints
, _("fixing bad setjmp PDR from libc"));
1960 e
->pdr
.pcreg
= RA_REGNUM
;
1964 e
->pdr
.regmask
= 0x80000000;
1965 e
->pdr
.regoffset
= -4;
1969 /* It would be reasonable that functions that have been compiled
1970 without debugging info have a btNil type for their return value,
1971 and functions that are void and are compiled with debugging info
1973 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1974 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1976 The glevel field in cur_fdr could be used to determine the presence
1977 of debugging info, but GCC doesn't always pass the -g switch settings
1978 to the assembler and GAS doesn't set the glevel field from the -g switch
1980 To work around these problems, the return value type of a TYPE_CODE_VOID
1981 function is adjusted accordingly if no debugging info was found in the
1982 compilation unit. */
1984 if (processing_gcc_compilation
== 0
1985 && found_ecoff_debugging_info
== 0
1986 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
1987 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
1990 /* Parse the external symbol ES. Just call parse_symbol() after
1991 making sure we know where the aux are for it.
1992 BIGEND says whether aux entries are big-endian or little-endian.
1994 This routine clobbers top_stack->cur_block and ->cur_st. */
1996 static void parse_external (EXTR
*, int, struct section_offsets
*,
2000 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2001 struct objfile
*objfile
)
2005 if (es
->ifd
!= ifdNil
)
2008 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2009 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2013 cur_fdr
= debug_info
->fdr
;
2017 /* Reading .o files */
2018 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2021 switch (es
->asym
.st
)
2024 /* These are generated for static symbols in .o files,
2045 /* FIXME: Turn this into a complaint? */
2047 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2048 what
, debug_info
->ssext
+ es
->asym
.iss
,
2049 fdr_name (cur_fdr
));
2053 switch (es
->asym
.st
)
2057 /* There is no need to parse the external procedure symbols.
2058 If they are from objects compiled without -g, their index will
2059 be indexNil, and the symbol definition from the minimal symbol
2060 is preferrable (yielding a function returning int instead of int).
2061 If the index points to a local procedure symbol, the local
2062 symbol already provides the correct type.
2063 Note that the index of the external procedure symbol points
2064 to the local procedure symbol in the local symbol table, and
2065 _not_ to the auxiliary symbol info. */
2069 /* Global common symbols are resolved by the runtime loader,
2071 if (SC_IS_COMMON (es
->asym
.sc
))
2074 /* Note that the case of a symbol with indexNil must be handled
2075 anyways by parse_symbol(). */
2076 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2083 /* Parse the line number info for file descriptor FH into
2084 GDB's linetable LT. MIPS' encoding requires a little bit
2085 of magic to get things out. Note also that MIPS' line
2086 numbers can go back and forth, apparently we can live
2087 with that and do not need to reorder our linetables */
2089 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2090 struct partial_symtab
*, CORE_ADDR
);
2093 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2094 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2096 unsigned char *base
;
2098 int delta
, count
, lineno
= 0;
2100 if (fh
->cbLine
== 0)
2103 /* Scan by procedure descriptors */
2105 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2109 unsigned char *halt
;
2111 /* No code for this one */
2112 if (pr
->iline
== ilineNil
||
2113 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2116 /* Determine start and end address of compressed line bytes for
2118 base
= debug_info
->line
+ fh
->cbLineOffset
;
2119 if (j
!= (fh
->cpd
- 1))
2120 halt
= base
+ pr
[1].cbLineOffset
;
2122 halt
= base
+ fh
->cbLine
;
2123 base
+= pr
->cbLineOffset
;
2125 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2127 l
= adr
>> 2; /* in words */
2128 for (lineno
= pr
->lnLow
; base
< halt
;)
2130 count
= *base
& 0x0f;
2131 delta
= *base
++ >> 4;
2136 delta
= (base
[0] << 8) | base
[1];
2137 if (delta
>= 0x8000)
2141 lineno
+= delta
; /* first delta is 0 */
2143 /* Complain if the line table overflows. Could happen
2144 with corrupt binaries. */
2145 if (lt
->nitems
>= maxlines
)
2147 complaint (&symfile_complaints
,
2148 _("guessed size of linetable for %s incorrectly"),
2152 k
= add_line (lt
, lineno
, l
, k
);
2159 function_outside_compilation_unit_complaint (const char *arg1
)
2161 complaint (&symfile_complaints
,
2162 _("function `%s' appears to be defined outside of all compilation units"),
2166 /* Use the STORAGE_CLASS to compute which section the given symbol
2167 belongs to, and then records this new minimal symbol. */
2170 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2171 enum minimal_symbol_type ms_type
, int storage_class
,
2172 struct objfile
*objfile
)
2175 asection
*bfd_section
;
2177 switch (storage_class
)
2180 section
= SECT_OFF_TEXT (objfile
);
2181 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".text");
2184 section
= SECT_OFF_DATA (objfile
);
2185 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".data");
2188 section
= SECT_OFF_BSS (objfile
);
2189 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".bss");
2192 section
= get_section_index (objfile
, ".sdata");
2193 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sdata");
2196 section
= get_section_index (objfile
, ".sbss");
2197 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".sbss");
2200 section
= get_section_index (objfile
, ".rdata");
2201 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rdata");
2204 section
= get_section_index (objfile
, ".init");
2205 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".init");
2208 section
= get_section_index (objfile
, ".xdata");
2209 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".xdata");
2212 section
= get_section_index (objfile
, ".pdata");
2213 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".pdata");
2216 section
= get_section_index (objfile
, ".fini");
2217 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".fini");
2220 section
= get_section_index (objfile
, ".rconst");
2221 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".rconst");
2225 section
= get_section_index (objfile
, ".tlsdata");
2226 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsdata");
2231 section
= get_section_index (objfile
, ".tlsbss");
2232 bfd_section
= bfd_get_section_by_name (cur_bfd
, ".tlsbss");
2236 /* This kind of symbol is not associated to a section. */
2241 prim_record_minimal_symbol_and_info (name
, address
, ms_type
, NULL
,
2242 section
, bfd_section
, objfile
);
2245 /* Master parsing procedure for first-pass reading of file symbols
2246 into a partial_symtab. */
2249 parse_partial_symbols (struct objfile
*objfile
)
2251 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2252 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2253 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2254 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2255 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2256 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2258 HDRR
*hdr
= &debug_info
->symbolic_header
;
2259 /* Running pointers */
2267 struct partial_symtab
*pst
;
2268 int textlow_not_set
= 1;
2269 int past_first_source_file
= 0;
2271 /* List of current psymtab's include files */
2272 char **psymtab_include_list
;
2273 int includes_allocated
;
2276 struct pst_map
*fdr_to_pst
;
2277 /* Index within current psymtab dependency list */
2278 struct partial_symtab
**dependency_list
;
2279 int dependencies_used
, dependencies_allocated
;
2280 struct cleanup
*old_chain
;
2282 enum language prev_language
;
2283 asection
*text_sect
;
2284 int relocatable
= 0;
2286 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2287 the shared libraries are prelinked at a high memory address.
2288 We have to adjust the start address of the object file for this case,
2289 by setting it to the start address of the first procedure in the file.
2290 But we should do no adjustments if we are debugging a .o file, where
2291 the text section (and fh->adr) really starts at zero. */
2292 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2293 if (text_sect
!= NULL
2294 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2297 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2298 sizeof (EXTR
) * hdr
->iextMax
);
2300 includes_allocated
= 30;
2302 psymtab_include_list
= (char **) alloca (includes_allocated
*
2304 next_symbol_text_func
= mdebug_next_symbol_text
;
2306 dependencies_allocated
= 30;
2307 dependencies_used
= 0;
2309 (struct partial_symtab
**) alloca (dependencies_allocated
*
2310 sizeof (struct partial_symtab
*));
2312 last_source_file
= NULL
;
2317 * Only parse the Local and External symbols, and the Relative FDR.
2318 * Fixup enough of the loader symtab to be able to use it.
2319 * Allocate space only for the file's portions we need to
2324 max_glevel
= MIN_GLEVEL
;
2326 /* Allocate the map FDR -> PST.
2327 Minor hack: -O3 images might claim some global data belongs
2328 to FDR -1. We`ll go along with that */
2329 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2330 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2333 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2334 fdr_to_pst
[-1].pst
= pst
;
2338 /* Allocate the global pending list. */
2340 ((struct mdebug_pending
**)
2341 obstack_alloc (&objfile
->objfile_obstack
,
2342 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2343 memset (pending_list
, 0,
2344 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2346 /* Pass 0 over external syms: swap them in. */
2347 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2348 make_cleanup (xfree
, ext_block
);
2350 ext_out
= (char *) debug_info
->external_ext
;
2351 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2353 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2354 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2356 /* Pass 1 over external syms: Presize and partition the list */
2358 ext_in_end
= ext_in
+ hdr
->iextMax
;
2359 for (; ext_in
< ext_in_end
; ext_in
++)
2361 /* See calls to complain below. */
2362 if (ext_in
->ifd
>= -1
2363 && ext_in
->ifd
< hdr
->ifdMax
2364 && ext_in
->asym
.iss
>= 0
2365 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2366 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2369 /* Pass 1.5 over files: partition out global symbol space */
2371 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2373 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2374 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2375 fdr_to_pst
[f_idx
].n_globals
= 0;
2380 For ECOFF in ELF, we skip the creation of the minimal symbols.
2381 The ECOFF symbols should be a subset of the Elf symbols, and the
2382 section information of the elf symbols will be more accurate.
2383 FIXME! What about Irix 5's native linker?
2385 By default, Elf sections which don't exist in ECOFF
2386 get put in ECOFF's absolute section by the gnu linker.
2387 Since absolute sections don't get relocated, we
2388 end up calculating an address different from that of
2389 the symbol's minimal symbol (created earlier from the
2392 To fix this, either :
2393 1) don't create the duplicate symbol
2394 (assumes ECOFF symtab is a subset of the ELF symtab;
2395 assumes no side-effects result from ignoring ECOFF symbol)
2396 2) create it, only if lookup for existing symbol in ELF's minimal
2399 assumes no side-effects result from ignoring ECOFF symbol)
2400 3) create it, but lookup ELF's minimal symbol and use it's section
2401 during relocation, then modify "uniqify" phase to merge and
2402 eliminate the duplicate symbol
2403 (highly inefficient)
2405 I've implemented #1 here...
2406 Skip the creation of the minimal symbols based on the ECOFF
2409 /* Pass 2 over external syms: fill in external symbols */
2411 ext_in_end
= ext_in
+ hdr
->iextMax
;
2412 for (; ext_in
< ext_in_end
; ext_in
++)
2414 enum minimal_symbol_type ms_type
= mst_text
;
2415 CORE_ADDR svalue
= ext_in
->asym
.value
;
2417 /* The Irix 5 native tools seem to sometimes generate bogus
2418 external symbols. */
2419 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2421 complaint (&symfile_complaints
,
2422 _("bad ifd for external symbol: %d (max %ld)"), ext_in
->ifd
,
2426 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2428 complaint (&symfile_complaints
,
2429 _("bad iss for external symbol: %ld (max %ld)"),
2430 ext_in
->asym
.iss
, hdr
->issExtMax
);
2434 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2435 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2438 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2442 /* Pass 3 over files, over local syms: fill in static symbols */
2443 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2445 /* Process ECOFF Symbol Types and Storage Classes */
2446 switch (ext_in
->asym
.st
)
2449 /* Beginnning of Procedure */
2450 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2453 /* Load time only static procs */
2454 ms_type
= mst_file_text
;
2455 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2458 /* External symbol */
2459 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2461 /* The value of a common symbol is its size, not its address.
2465 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2468 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2470 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2473 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2475 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2478 svalue
+= ANOFFSET (objfile
->section_offsets
,
2479 get_section_index (objfile
, ".sbss"));
2487 /* On certain platforms, some extra label symbols can be
2488 generated by the linker. One possible usage for this kind
2489 of symbols is to represent the address of the begining of a
2490 given section. For instance, on Tru64 5.1, the address of
2491 the _ftext label is the start address of the .text section.
2493 The storage class of these symbols is usually directly
2494 related to the section to which the symbol refers. For
2495 instance, on Tru64 5.1, the storage class for the _fdata
2496 label is scData, refering to the .data section.
2498 It is actually possible that the section associated to the
2499 storage class of the label does not exist. On True64 5.1
2500 for instance, the libm.so shared library does not contain
2501 any .data section, although it contains a _fpdata label
2502 which storage class is scData... Since these symbols are
2503 usually useless for the debugger user anyway, we just
2504 discard these symbols.
2507 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2509 if (objfile
->sect_index_text
== -1)
2512 ms_type
= mst_file_text
;
2513 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2515 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2517 if (objfile
->sect_index_data
== -1)
2520 ms_type
= mst_file_data
;
2521 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2523 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2525 if (objfile
->sect_index_bss
== -1)
2528 ms_type
= mst_file_bss
;
2529 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2531 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2533 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2535 if (sbss_sect_index
== -1)
2538 ms_type
= mst_file_bss
;
2539 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2546 /* The alpha has the section start addresses in stLocal symbols
2547 whose name starts with a `.'. Skip those but complain for all
2548 other stLocal symbols.
2549 Irix6 puts the section start addresses in stNil symbols, skip
2555 ms_type
= mst_unknown
;
2556 unknown_ext_complaint (name
);
2558 if (!ECOFF_IN_ELF (cur_bfd
))
2559 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2563 /* Pass 3 over files, over local syms: fill in static symbols */
2564 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2566 struct partial_symtab
*save_pst
;
2570 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2574 fdr_to_pst
[f_idx
].pst
= NULL
;
2578 /* Determine the start address for this object file from the
2579 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2583 if (relocatable
|| textlow
!= 0)
2584 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2588 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2591 objfile
->global_psymbols
.next
,
2592 objfile
->static_psymbols
.next
);
2593 pst
->read_symtab_private
= ((char *)
2594 obstack_alloc (&objfile
->objfile_obstack
,
2595 sizeof (struct symloc
)));
2596 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2599 FDR_IDX (pst
) = f_idx
;
2600 CUR_BFD (pst
) = cur_bfd
;
2601 DEBUG_SWAP (pst
) = debug_swap
;
2602 DEBUG_INFO (pst
) = debug_info
;
2603 PENDING_LIST (pst
) = pending_list
;
2605 /* The way to turn this into a symtab is to call... */
2606 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2608 /* Set up language for the pst.
2609 The language from the FDR is used if it is unambigious (e.g. cfront
2610 with native cc and g++ will set the language to C).
2611 Otherwise we have to deduce the language from the filename.
2612 Native ecoff has every header file in a separate FDR, so
2613 deduce_language_from_filename will return language_unknown for
2614 a header file, which is not what we want.
2615 But the FDRs for the header files are after the FDR for the source
2616 file, so we can assign the language of the source file to the
2617 following header files. Then we save the language in the private
2618 pst data so that we can reuse it when building symtabs. */
2619 prev_language
= psymtab_language
;
2623 case langCplusplusV2
:
2624 psymtab_language
= language_cplus
;
2627 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2630 if (psymtab_language
== language_unknown
)
2631 psymtab_language
= prev_language
;
2632 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2634 pst
->texthigh
= pst
->textlow
;
2636 /* For stabs-in-ecoff files, the second symbol must be @stab.
2637 This symbol is emitted by mips-tfile to signal that the
2638 current object file uses encapsulated stabs instead of mips
2639 ecoff for local symbols. (It is the second symbol because
2640 the first symbol is the stFile used to signal the start of a
2642 processing_gcc_compilation
= 0;
2645 (*swap_sym_in
) (cur_bfd
,
2646 ((char *) debug_info
->external_sym
2647 + (fh
->isymBase
+ 1) * external_sym_size
),
2649 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2651 processing_gcc_compilation
= 2;
2654 if (processing_gcc_compilation
!= 0)
2656 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2661 (*swap_sym_in
) (cur_bfd
,
2662 (((char *) debug_info
->external_sym
)
2663 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2665 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2666 if (!ECOFF_IS_STAB (&sh
))
2668 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2673 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2674 if (sh
.st
== stStaticProc
)
2676 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2677 record_minimal_symbol (namestring
, sh
.value
,
2678 mst_file_text
, sh
.sc
,
2681 procaddr
= sh
.value
;
2683 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2684 (debug_info
->external_aux
2687 (*swap_sym_in
) (cur_bfd
,
2688 ((char *) debug_info
->external_sym
2689 + ((fh
->isymBase
+ isym
- 1)
2690 * external_sym_size
)),
2694 CORE_ADDR high
= procaddr
+ sh
.value
;
2696 /* Kludge for Irix 5.2 zero fh->adr. */
2698 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2699 pst
->textlow
= procaddr
;
2700 if (high
> pst
->texthigh
)
2701 pst
->texthigh
= high
;
2704 else if (sh
.st
== stStatic
)
2719 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2720 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2721 record_minimal_symbol (namestring
, sh
.value
,
2722 mst_file_data
, sh
.sc
,
2727 /* FIXME! Shouldn't this use cases for bss,
2728 then have the default be abs? */
2729 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2730 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2731 record_minimal_symbol (namestring
, sh
.value
,
2732 mst_file_bss
, sh
.sc
,
2739 /* Handle stabs continuation */
2741 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2742 int len
= strlen (stabstring
);
2743 while (stabstring
[len
- 1] == '\\')
2746 char *stabstring1
= stabstring
;
2750 /* Ignore continuation char from 1st string */
2753 /* Read next stabstring */
2755 (*swap_sym_in
) (cur_bfd
,
2756 (((char *) debug_info
->external_sym
)
2757 + (fh
->isymBase
+ cur_sdx
)
2758 * external_sym_size
),
2760 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2761 len2
= strlen (stabstring2
);
2763 /* Concatinate stabstring2 with stabstring1 */
2765 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2766 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2769 stabstring
= xmalloc (len
+ len2
+ 1);
2770 strcpy (stabstring
, stabstring1
);
2772 strcpy (stabstring
+ len
, stabstring2
);
2780 * Standard, external, non-debugger, symbols
2783 case N_TEXT
| N_EXT
:
2784 case N_NBTEXT
| N_EXT
:
2785 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2788 case N_DATA
| N_EXT
:
2789 case N_NBDATA
| N_EXT
:
2790 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2795 case N_NBBSS
| N_EXT
:
2796 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2797 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2804 /* Standard, local, non-debugger, symbols */
2808 /* We need to be able to deal with both N_FN or N_TEXT,
2809 because we have no way of knowing whether the sys-supplied ld
2810 or GNU ld was used to make the executable. Sequents throw
2811 in another wrinkle -- they renumbered N_FN. */
2819 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2822 case N_UNDF
| N_EXT
:
2823 continue; /* Just undefined, not COMMON */
2828 /* Lots of symbol types we can just ignore. */
2835 /* Keep going . . . */
2838 * Special symbol types for GNU
2841 case N_INDR
| N_EXT
:
2843 case N_SETA
| N_EXT
:
2845 case N_SETT
| N_EXT
:
2847 case N_SETD
| N_EXT
:
2849 case N_SETB
| N_EXT
:
2860 static int prev_so_symnum
= -10;
2861 static int first_so_symnum
;
2863 int prev_textlow_not_set
;
2865 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2867 prev_textlow_not_set
= textlow_not_set
;
2869 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2870 /* A zero value is probably an indication for the SunPRO 3.0
2871 compiler. end_psymtab explicitly tests for zero, so
2872 don't relocate it. */
2876 textlow_not_set
= 1;
2880 textlow_not_set
= 0;
2882 textlow_not_set
= 0;
2884 past_first_source_file
= 1;
2886 if (prev_so_symnum
!= symnum
- 1)
2887 { /* Here if prev stab wasn't N_SO */
2888 first_so_symnum
= symnum
;
2892 pst
= (struct partial_symtab
*) 0;
2894 dependencies_used
= 0;
2898 prev_so_symnum
= symnum
;
2900 /* End the current partial symtab and start a new one */
2902 /* SET_NAMESTRING ();*/
2903 namestring
= stabstring
;
2905 /* Null name means end of .o file. Don't start a new one. */
2906 if (*namestring
== '\000')
2909 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2910 The first one is a directory name; the second the file name.
2911 If pst exists, is empty, and has a filename ending in '/',
2912 we assume the previous N_SO was a directory name. */
2914 p
= strrchr (namestring
, '/');
2915 if (p
&& *(p
+ 1) == '\000')
2916 continue; /* Simply ignore directory name SOs */
2918 /* Some other compilers (C++ ones in particular) emit useless
2919 SOs for non-existant .c files. We ignore all subsequent SOs that
2920 immediately follow the first. */
2932 enum language tmp_language
;
2933 /* Mark down an include file in the current psymtab */
2935 /* SET_NAMESTRING ();*/
2936 namestring
= stabstring
;
2938 tmp_language
= deduce_language_from_filename (namestring
);
2940 /* Only change the psymtab's language if we've learned
2941 something useful (eg. tmp_language is not language_unknown).
2942 In addition, to match what start_subfile does, never change
2944 if (tmp_language
!= language_unknown
2945 && (tmp_language
!= language_c
2946 || psymtab_language
!= language_cplus
))
2947 psymtab_language
= tmp_language
;
2949 /* In C++, one may expect the same filename to come round many
2950 times, when code is coming alternately from the main file
2951 and from inline functions in other files. So I check to see
2952 if this is a file we've seen before -- either the main
2953 source file, or a previously included file.
2955 This seems to be a lot of time to be spending on N_SOL, but
2956 things like "break c-exp.y:435" need to work (I
2957 suppose the psymtab_include_list could be hashed or put
2958 in a binary tree, if profiling shows this is a major hog). */
2959 if (pst
&& strcmp (namestring
, pst
->filename
) == 0)
2963 for (i
= 0; i
< includes_used
; i
++)
2964 if (strcmp (namestring
,
2965 psymtab_include_list
[i
]) == 0)
2974 psymtab_include_list
[includes_used
++] = namestring
;
2975 if (includes_used
>= includes_allocated
)
2977 char **orig
= psymtab_include_list
;
2979 psymtab_include_list
= (char **)
2980 alloca ((includes_allocated
*= 2) *
2982 memcpy (psymtab_include_list
, orig
,
2983 includes_used
* sizeof (char *));
2987 case N_LSYM
: /* Typedef or automatic variable. */
2988 case N_STSYM
: /* Data seg var -- static */
2989 case N_LCSYM
: /* BSS " */
2990 case N_ROSYM
: /* Read-only data seg var -- static. */
2991 case N_NBSTS
: /* Gould nobase. */
2992 case N_NBLCS
: /* symbols. */
2994 case N_GSYM
: /* Global (extern) variable; can be
2995 data or bss (sigh FIXME). */
2997 /* Following may probably be ignored; I'll leave them here
2998 for now (until I do Pascal and Modula 2 extensions). */
3000 case N_PC
: /* I may or may not need this; I
3002 case N_M2C
: /* I suspect that I can ignore this here. */
3003 case N_SCOPE
: /* Same. */
3005 /* SET_NAMESTRING ();*/
3006 namestring
= stabstring
;
3007 p
= (char *) strchr (namestring
, ':');
3009 continue; /* Not a debugging symbol. */
3013 /* Main processing section for debugging symbols which
3014 the initial read through the symbol tables needs to worry
3015 about. If we reach this point, the symbol which we are
3016 considering is definitely one we are interested in.
3017 p must also contain the (valid) index into the namestring
3018 which indicates the debugging type symbol. */
3023 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3024 #ifdef STATIC_TRANSFORM_NAME
3025 namestring
= STATIC_TRANSFORM_NAME (namestring
);
3027 add_psymbol_to_list (namestring
, p
- namestring
,
3028 VAR_DOMAIN
, LOC_STATIC
,
3029 &objfile
->static_psymbols
,
3031 psymtab_language
, objfile
);
3034 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3035 /* The addresses in these entries are reported to be
3036 wrong. See the code that reads 'G's for symtabs. */
3037 add_psymbol_to_list (namestring
, p
- namestring
,
3038 VAR_DOMAIN
, LOC_STATIC
,
3039 &objfile
->global_psymbols
,
3041 psymtab_language
, objfile
);
3045 /* When a 'T' entry is defining an anonymous enum, it
3046 may have a name which is the empty string, or a
3047 single space. Since they're not really defining a
3048 symbol, those shouldn't go in the partial symbol
3049 table. We do pick up the elements of such enums at
3050 'check_enum:', below. */
3051 if (p
>= namestring
+ 2
3052 || (p
== namestring
+ 1
3053 && namestring
[0] != ' '))
3055 add_psymbol_to_list (namestring
, p
- namestring
,
3056 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3057 &objfile
->static_psymbols
,
3059 psymtab_language
, objfile
);
3062 /* Also a typedef with the same name. */
3063 add_psymbol_to_list (namestring
, p
- namestring
,
3064 VAR_DOMAIN
, LOC_TYPEDEF
,
3065 &objfile
->static_psymbols
,
3067 psymtab_language
, objfile
);
3073 if (p
!= namestring
) /* a name is there, not just :T... */
3075 add_psymbol_to_list (namestring
, p
- namestring
,
3076 VAR_DOMAIN
, LOC_TYPEDEF
,
3077 &objfile
->static_psymbols
,
3079 psymtab_language
, objfile
);
3082 /* If this is an enumerated type, we need to
3083 add all the enum constants to the partial symbol
3084 table. This does not cover enums without names, e.g.
3085 "enum {a, b} c;" in C, but fortunately those are
3086 rare. There is no way for GDB to find those from the
3087 enum type without spending too much time on it. Thus
3088 to solve this problem, the compiler needs to put out the
3089 enum in a nameless type. GCC2 does this. */
3091 /* We are looking for something of the form
3092 <name> ":" ("t" | "T") [<number> "="] "e"
3093 {<constant> ":" <value> ","} ";". */
3095 /* Skip over the colon and the 't' or 'T'. */
3097 /* This type may be given a number. Also, numbers can come
3098 in pairs like (0,26). Skip over it. */
3099 while ((*p
>= '0' && *p
<= '9')
3100 || *p
== '(' || *p
== ',' || *p
== ')'
3106 /* The aix4 compiler emits extra crud before the members. */
3109 /* Skip over the type (?). */
3113 /* Skip over the colon. */
3117 /* We have found an enumerated type. */
3118 /* According to comments in read_enum_type
3119 a comma could end it instead of a semicolon.
3120 I don't know where that happens.
3122 while (*p
&& *p
!= ';' && *p
!= ',')
3126 /* Check for and handle cretinous dbx symbol name
3128 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3129 p
= next_symbol_text (objfile
);
3131 /* Point to the character after the name
3132 of the enum constant. */
3133 for (q
= p
; *q
&& *q
!= ':'; q
++)
3135 /* Note that the value doesn't matter for
3136 enum constants in psymtabs, just in symtabs. */
3137 add_psymbol_to_list (p
, q
- p
,
3138 VAR_DOMAIN
, LOC_CONST
,
3139 &objfile
->static_psymbols
, 0,
3140 0, psymtab_language
, objfile
);
3141 /* Point past the name. */
3143 /* Skip over the value. */
3144 while (*p
&& *p
!= ',')
3146 /* Advance past the comma. */
3153 /* Constant, e.g. from "const" in Pascal. */
3154 add_psymbol_to_list (namestring
, p
- namestring
,
3155 VAR_DOMAIN
, LOC_CONST
,
3156 &objfile
->static_psymbols
, sh
.value
,
3157 0, psymtab_language
, objfile
);
3163 int name_len
= p
- namestring
;
3164 char *name
= xmalloc (name_len
+ 1);
3165 memcpy (name
, namestring
, name_len
);
3166 name
[name_len
] = '\0';
3167 function_outside_compilation_unit_complaint (name
);
3170 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3171 add_psymbol_to_list (namestring
, p
- namestring
,
3172 VAR_DOMAIN
, LOC_BLOCK
,
3173 &objfile
->static_psymbols
,
3175 psymtab_language
, objfile
);
3178 /* Global functions were ignored here, but now they
3179 are put into the global psymtab like one would expect.
3180 They're also in the minimal symbol table. */
3184 int name_len
= p
- namestring
;
3185 char *name
= xmalloc (name_len
+ 1);
3186 memcpy (name
, namestring
, name_len
);
3187 name
[name_len
] = '\0';
3188 function_outside_compilation_unit_complaint (name
);
3191 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3192 add_psymbol_to_list (namestring
, p
- namestring
,
3193 VAR_DOMAIN
, LOC_BLOCK
,
3194 &objfile
->global_psymbols
,
3196 psymtab_language
, objfile
);
3199 /* Two things show up here (hopefully); static symbols of
3200 local scope (static used inside braces) or extensions
3201 of structure symbols. We can ignore both. */
3215 case '#': /* for symbol identification (used in live ranges) */
3219 /* It is a C++ nested symbol. We don't need to record it
3220 (I don't think); if we try to look up foo::bar::baz,
3221 then symbols for the symtab containing foo should get
3222 read in, I think. */
3223 /* Someone says sun cc puts out symbols like
3224 /foo/baz/maclib::/usr/local/bin/maclib,
3225 which would get here with a symbol type of ':'. */
3229 /* Unexpected symbol descriptor. The second and subsequent stabs
3230 of a continued stab can show up here. The question is
3231 whether they ever can mimic a normal stab--it would be
3232 nice if not, since we certainly don't want to spend the
3233 time searching to the end of every string looking for
3236 complaint (&symfile_complaints
,
3237 _("unknown symbol descriptor `%c'"), p
[1]);
3239 /* Ignore it; perhaps it is an extension that we don't
3248 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3249 /* Solaris 2 end of module, finish current partial
3250 symbol table. END_PSYMTAB will set
3251 pst->texthigh to the proper value, which is
3252 necessary if a module compiled without
3253 debugging info follows this module. */
3256 pst
= (struct partial_symtab
*) 0;
3258 dependencies_used
= 0;
3264 if (sh
.value
> save_pst
->texthigh
)
3265 save_pst
->texthigh
= sh
.value
;
3270 case N_SSYM
: /* Claim: Structure or union element.
3271 Hopefully, I can ignore this. */
3272 case N_ENTRY
: /* Alternate entry point; can ignore. */
3273 case N_MAIN
: /* Can definitely ignore this. */
3274 case N_CATCH
: /* These are GNU C++ extensions */
3275 case N_EHDECL
: /* that can safely be ignored here. */
3285 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3286 case N_DEFD
: /* GNU Modula-2 */
3287 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3289 case N_OBJ
: /* useless types from Solaris */
3291 /* These symbols aren't interesting; don't worry about them */
3296 /* If we haven't found it yet, ignore it. It's probably some
3297 new type we don't know about yet. */
3298 complaint (&symfile_complaints
, _("unknown symbol type %s"),
3299 hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3303 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3306 /* end - Handle continuation */
3311 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3314 enum address_class
class;
3316 (*swap_sym_in
) (cur_bfd
,
3317 ((char *) debug_info
->external_sym
3318 + ((fh
->isymBase
+ cur_sdx
)
3319 * external_sym_size
)),
3322 if (ECOFF_IS_STAB (&sh
))
3328 /* Non absolute static symbols go into the minimal table. */
3329 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3330 || (sh
.index
== indexNil
3331 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3333 /* FIXME, premature? */
3338 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3344 /* The value of a stEnd symbol is the displacement from the
3345 corresponding start symbol value, do not relocate it. */
3347 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3354 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3358 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3369 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3370 mst_file_text
, NULL
,
3371 SECT_OFF_TEXT (objfile
), NULL
,
3377 /* Ignore all parameter symbol records. */
3378 if (sh
.index
>= hdr
->iauxMax
)
3380 /* Should not happen, but does when cross-compiling
3381 with the MIPS compiler. FIXME -- pull later. */
3382 index_complaint (name
);
3383 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3386 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3387 (debug_info
->external_aux
3391 if (new_sdx
<= cur_sdx
)
3393 /* This should not happen either... FIXME. */
3394 complaint (&symfile_complaints
,
3395 _("bad proc end in aux found from symbol %s"),
3397 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3400 /* For stProc symbol records, we need to check the
3401 storage class as well, as only (stProc, scText)
3402 entries represent "real" procedures - See the
3403 Compaq document titled "Object File / Symbol Table
3404 Format Specification" for more information. If the
3405 storage class is not scText, we discard the whole
3406 block of symbol records for this stProc. */
3407 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3410 /* Usually there is a local and a global stProc symbol
3411 for a function. This means that the function name
3412 has already been entered into the mimimal symbol table
3413 while processing the global symbols in pass 2 above.
3414 One notable exception is the PROGRAM name from
3415 f77 compiled executables, it is only put out as
3416 local stProc symbol, and a global MAIN__ stProc symbol
3417 points to it. It doesn't matter though, as gdb is
3418 still able to find the PROGRAM name via the partial
3419 symbol table, and the MAIN__ symbol via the minimal
3421 if (sh
.st
== stProc
)
3422 add_psymbol_to_list (name
, strlen (name
),
3423 VAR_DOMAIN
, LOC_BLOCK
,
3424 &objfile
->global_psymbols
,
3425 0, sh
.value
, psymtab_language
, objfile
);
3427 add_psymbol_to_list (name
, strlen (name
),
3428 VAR_DOMAIN
, LOC_BLOCK
,
3429 &objfile
->static_psymbols
,
3430 0, sh
.value
, psymtab_language
, objfile
);
3432 procaddr
= sh
.value
;
3435 (*swap_sym_in
) (cur_bfd
,
3436 ((char *) debug_info
->external_sym
3437 + ((fh
->isymBase
+ cur_sdx
- 1)
3438 * external_sym_size
)),
3443 /* Kludge for Irix 5.2 zero fh->adr. */
3445 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3446 pst
->textlow
= procaddr
;
3448 high
= procaddr
+ sh
.value
;
3449 if (high
> pst
->texthigh
)
3450 pst
->texthigh
= high
;
3453 case stStatic
: /* Variable */
3454 if (SC_IS_DATA (sh
.sc
))
3455 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3456 mst_file_data
, NULL
,
3457 SECT_OFF_DATA (objfile
),
3461 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3463 SECT_OFF_BSS (objfile
),
3469 case stIndirect
: /* Irix5 forward declaration */
3470 /* Skip forward declarations from Irix5 cc */
3473 case stTypedef
: /* Typedef */
3474 /* Skip typedefs for forward declarations and opaque
3475 structs from alpha and mips cc. */
3476 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3478 class = LOC_TYPEDEF
;
3481 case stConstant
: /* Constant decl */
3488 case stBlock
: /* { }, str, un, enum */
3489 /* Do not create a partial symbol for cc unnamed aggregates
3490 and gcc empty aggregates. */
3491 if ((sh
.sc
== scInfo
3492 || SC_IS_COMMON (sh
.sc
))
3494 && sh
.index
!= cur_sdx
+ 2)
3496 add_psymbol_to_list (name
, strlen (name
),
3497 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3498 &objfile
->static_psymbols
,
3500 psymtab_language
, objfile
);
3502 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3504 /* Skip over the block */
3506 if (new_sdx
<= cur_sdx
)
3508 /* This happens with the Ultrix kernel. */
3509 complaint (&symfile_complaints
,
3510 _("bad aux index at block symbol %s"), name
);
3511 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3516 case stFile
: /* File headers */
3517 case stLabel
: /* Labels */
3518 case stEnd
: /* Ends of files */
3521 case stLocal
: /* Local variables */
3522 /* Normally these are skipped because we skip over
3523 all blocks we see. However, these can occur
3524 as visible symbols in a .h file that contains code. */
3528 /* Both complaints are valid: one gives symbol name,
3529 the other the offending symbol type. */
3530 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3532 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3536 /* Use this gdb symbol */
3537 add_psymbol_to_list (name
, strlen (name
),
3539 &objfile
->static_psymbols
,
3540 0, sh
.value
, psymtab_language
, objfile
);
3542 cur_sdx
++; /* Go to next file symbol */
3545 /* Now do enter the external symbols. */
3546 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3547 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3548 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3549 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3550 for (; --cur_sdx
>= 0; ext_ptr
++)
3552 enum address_class
class;
3557 if (ext_ptr
->ifd
!= f_idx
)
3558 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
3559 psh
= &ext_ptr
->asym
;
3561 /* Do not add undefined symbols to the partial symbol table. */
3562 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3565 svalue
= psh
->value
;
3570 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3577 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3581 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3588 /* These are generated for static symbols in .o files,
3593 /* External procedure symbols have been entered
3594 into the minimal symbol table in pass 2 above.
3595 Ignore them, as parse_external will ignore them too. */
3601 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3602 /* Fall through, pretend it's global. */
3604 /* Global common symbols are resolved by the runtime loader,
3606 if (SC_IS_COMMON (psh
->sc
))
3612 name
= debug_info
->ssext
+ psh
->iss
;
3613 add_psymbol_to_list (name
, strlen (name
),
3615 &objfile
->global_psymbols
,
3617 psymtab_language
, objfile
);
3621 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3622 empty and put on the free list. */
3623 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3624 psymtab_include_list
, includes_used
,
3625 -1, save_pst
->texthigh
,
3626 dependency_list
, dependencies_used
, textlow_not_set
);
3628 dependencies_used
= 0;
3630 /* The objfile has its functions reordered if this partial symbol
3631 table overlaps any other partial symbol table.
3632 We cannot assume a reordered objfile if a partial symbol table
3633 is contained within another partial symbol table, as partial symbol
3634 tables for include files with executable code are contained
3635 within the partial symbol table for the including source file,
3636 and we do not want to flag the objfile reordered for these cases.
3638 This strategy works well for Irix-5.2 shared libraries, but we
3639 might have to use a more elaborate (and slower) algorithm for
3641 save_pst
= fdr_to_pst
[f_idx
].pst
;
3642 if (save_pst
!= NULL
3643 && save_pst
->textlow
!= 0
3644 && !(objfile
->flags
& OBJF_REORDERED
))
3646 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3649 && save_pst
->textlow
>= pst
->textlow
3650 && save_pst
->textlow
< pst
->texthigh
3651 && save_pst
->texthigh
> pst
->texthigh
)
3653 objfile
->flags
|= OBJF_REORDERED
;
3660 /* Now scan the FDRs for dependencies */
3661 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3663 fh
= f_idx
+ debug_info
->fdr
;
3664 pst
= fdr_to_pst
[f_idx
].pst
;
3666 if (pst
== (struct partial_symtab
*) NULL
)
3669 /* This should catch stabs-in-ecoff. */
3673 /* Skip the first file indirect entry as it is a self dependency
3674 for source files or a reverse .h -> .c dependency for header files. */
3675 pst
->number_of_dependencies
= 0;
3677 ((struct partial_symtab
**)
3678 obstack_alloc (&objfile
->objfile_obstack
,
3680 * sizeof (struct partial_symtab
*))));
3681 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3685 (*swap_rfd_in
) (cur_bfd
,
3686 ((char *) debug_info
->external_rfd
3687 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3689 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3691 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3695 /* Skip self dependencies of header files. */
3699 /* Do not add to dependeny list if psymtab was empty. */
3700 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3702 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3706 /* Remove the dummy psymtab created for -O3 images above, if it is
3707 still empty, to enable the detection of stripped executables. */
3708 if (objfile
->psymtabs
->next
== NULL
3709 && objfile
->psymtabs
->number_of_dependencies
== 0
3710 && objfile
->psymtabs
->n_global_syms
== 0
3711 && objfile
->psymtabs
->n_static_syms
== 0)
3712 objfile
->psymtabs
= NULL
;
3713 do_cleanups (old_chain
);
3716 /* If the current psymbol has an enumerated type, we need to add
3717 all the the enum constants to the partial symbol table. */
3720 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3723 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3724 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3725 char *ext_sym
= ((char *) debug_info
->external_sym
3726 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3736 /* It is an enumerated type if the next symbol entry is a stMember
3737 and its auxiliary index is indexNil or its auxiliary entry
3738 is a plain btNil or btVoid.
3739 Alpha cc -migrate enums are recognized by a zero index and
3740 a zero symbol value.
3741 DU 4.0 cc enums are recognized by a member type of btEnum without
3742 qualifiers and a zero symbol value. */
3743 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3744 if (sh
.st
!= stMember
)
3747 if (sh
.index
== indexNil
3748 || (sh
.index
== 0 && svalue
== 0))
3750 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3751 &(debug_info
->external_aux
3752 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3754 if ((tir
.bt
!= btNil
3756 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3757 || tir
.tq0
!= tqNil
)
3769 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3770 if (sh
.st
!= stMember
)
3772 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3774 /* Note that the value doesn't matter for enum constants
3775 in psymtabs, just in symtabs. */
3776 add_psymbol_to_list (name
, strlen (name
),
3777 VAR_DOMAIN
, LOC_CONST
,
3778 &objfile
->static_psymbols
, 0,
3779 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3780 ext_sym
+= external_sym_size
;
3784 /* Get the next symbol. OBJFILE is unused. */
3787 mdebug_next_symbol_text (struct objfile
*objfile
)
3792 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3793 ((char *) debug_info
->external_sym
3794 + ((cur_fdr
->isymBase
+ cur_sdx
)
3795 * debug_swap
->external_sym_size
)),
3797 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3800 /* Ancillary function to psymtab_to_symtab(). Does all the work
3801 for turning the partial symtab PST into a symtab, recurring
3802 first on all dependent psymtabs. The argument FILENAME is
3803 only passed so we can see in debug stack traces what file
3806 This function has a split personality, based on whether the
3807 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3808 The flow of control and even the memory allocation differs. FIXME. */
3811 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3813 bfd_size_type external_sym_size
;
3814 bfd_size_type external_pdr_size
;
3815 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3816 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3818 struct symtab
*st
= NULL
;
3820 struct linetable
*lines
;
3821 CORE_ADDR lowest_pdr_addr
= 0;
3822 int last_symtab_ended
= 0;
3828 /* Read in all partial symbtabs on which this one is dependent.
3829 NOTE that we do have circular dependencies, sigh. We solved
3830 that by setting pst->readin before this point. */
3832 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3833 if (!pst
->dependencies
[i
]->readin
)
3835 /* Inform about additional files to be read in. */
3838 fputs_filtered (" ", gdb_stdout
);
3840 fputs_filtered ("and ", gdb_stdout
);
3842 printf_filtered ("%s...",
3843 pst
->dependencies
[i
]->filename
);
3844 wrap_here (""); /* Flush output */
3845 gdb_flush (gdb_stdout
);
3847 /* We only pass the filename for debug purposes */
3848 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3849 pst
->dependencies
[i
]->filename
);
3852 /* Do nothing if this is a dummy psymtab. */
3854 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3855 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3858 /* Now read the symbols for this symtab */
3860 cur_bfd
= CUR_BFD (pst
);
3861 debug_swap
= DEBUG_SWAP (pst
);
3862 debug_info
= DEBUG_INFO (pst
);
3863 pending_list
= PENDING_LIST (pst
);
3864 external_sym_size
= debug_swap
->external_sym_size
;
3865 external_pdr_size
= debug_swap
->external_pdr_size
;
3866 swap_sym_in
= debug_swap
->swap_sym_in
;
3867 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3868 current_objfile
= pst
->objfile
;
3869 cur_fd
= FDR_IDX (pst
);
3870 fh
= ((cur_fd
== -1)
3872 : debug_info
->fdr
+ cur_fd
);
3875 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3876 processing_gcc_compilation
= 0;
3877 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3881 (*swap_sym_in
) (cur_bfd
,
3882 ((char *) debug_info
->external_sym
3883 + (fh
->isymBase
+ 1) * external_sym_size
),
3885 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3888 /* We indicate that this is a GCC compilation so that certain
3889 features will be enabled in stabsread/dbxread. */
3890 processing_gcc_compilation
= 2;
3894 if (processing_gcc_compilation
!= 0)
3897 /* This symbol table contains stabs-in-ecoff entries. */
3899 /* Parse local symbols first */
3901 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3903 current_objfile
= NULL
;
3906 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3912 (*swap_sym_in
) (cur_bfd
,
3913 (((char *) debug_info
->external_sym
)
3914 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3916 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3918 /* XXX This is a hack. It will go away! */
3919 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3921 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3923 /* We should never get non N_STAB symbols here, but they
3924 should be harmless, so keep process_one_symbol from
3925 complaining about them. */
3926 if (type_code
& N_STAB
)
3928 /* If we found a trailing N_SO with no name, process
3929 it here instead of in process_one_symbol, so we
3930 can keep a handle to its symtab. The symtab
3931 would otherwise be ended twice, once in
3932 process_one_symbol, and once after this loop. */
3933 if (type_code
== N_SO
3935 && previous_stab_code
!= (unsigned char) N_SO
3938 valu
+= ANOFFSET (pst
->section_offsets
,
3939 SECT_OFF_TEXT (pst
->objfile
));
3940 previous_stab_code
= N_SO
;
3941 st
= end_symtab (valu
, pst
->objfile
,
3942 SECT_OFF_TEXT (pst
->objfile
));
3944 last_symtab_ended
= 1;
3948 last_symtab_ended
= 0;
3949 process_one_symbol (type_code
, 0, valu
, name
,
3950 pst
->section_offsets
, pst
->objfile
);
3953 /* Similarly a hack. */
3954 else if (name
[0] == '#')
3956 process_one_symbol (N_SLINE
, 0, valu
, name
,
3957 pst
->section_offsets
, pst
->objfile
);
3959 if (type_code
== N_FUN
)
3961 /* Make up special symbol to contain
3962 procedure specific info */
3963 struct mdebug_extra_func_info
*e
=
3964 ((struct mdebug_extra_func_info
*)
3965 obstack_alloc (¤t_objfile
->objfile_obstack
,
3966 sizeof (struct mdebug_extra_func_info
)));
3967 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
3969 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
3970 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
3971 SYMBOL_CLASS (s
) = LOC_CONST
;
3972 SYMBOL_TYPE (s
) = mdebug_type_void
;
3973 SYMBOL_VALUE (s
) = (long) e
;
3974 e
->pdr
.framereg
= -1;
3975 add_symbol_to_list (s
, &local_symbols
);
3978 else if (sh
.st
== stLabel
)
3980 if (sh
.index
== indexNil
)
3982 /* This is what the gcc2_compiled and __gnu_compiled_*
3983 show up as. So don't complain. */
3988 /* Handle encoded stab line number. */
3989 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3990 record_line (current_subfile
, sh
.index
, valu
);
3993 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3994 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3995 /* These are generated by gcc-2.x, do not complain */
3998 complaint (&symfile_complaints
, _("unknown stabs symbol %s"), name
);
4001 if (! last_symtab_ended
)
4003 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
4007 /* There used to be a call to sort_blocks here, but this should not
4008 be necessary for stabs symtabs. And as sort_blocks modifies the
4009 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4010 it did the wrong thing if the first procedure in a file was
4011 generated via asm statements. */
4013 /* Fill in procedure info next. */
4017 struct cleanup
*old_chain
;
4023 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4024 old_chain
= make_cleanup (xfree
, pr_block
);
4026 pdr_ptr
= ((char *) debug_info
->external_pdr
4027 + fh
->ipdFirst
* external_pdr_size
);
4028 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4032 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4034 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4036 /* Determine lowest PDR address, the PDRs are not always
4038 if (pdr_in
== pr_block
)
4039 lowest_pdr_addr
= pdr_in
->adr
;
4040 else if (pdr_in
->adr
< lowest_pdr_addr
)
4041 lowest_pdr_addr
= pdr_in
->adr
;
4045 pdr_in_end
= pdr_in
+ fh
->cpd
;
4046 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4047 parse_procedure (pdr_in
, st
, pst
);
4049 do_cleanups (old_chain
);
4054 /* This symbol table contains ordinary ecoff entries. */
4063 st
= new_symtab ("unknown", 0, pst
->objfile
);
4067 maxlines
= 2 * fh
->cline
;
4068 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4070 /* The proper language was already determined when building
4071 the psymtab, use it. */
4072 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4075 psymtab_language
= st
->language
;
4077 lines
= LINETABLE (st
);
4079 /* Get a new lexical context */
4081 push_parse_stack ();
4082 top_stack
->cur_st
= st
;
4083 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4085 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4086 BLOCK_END (top_stack
->cur_block
) = 0;
4087 top_stack
->blocktype
= stFile
;
4088 top_stack
->cur_type
= 0;
4089 top_stack
->procadr
= 0;
4090 top_stack
->numargs
= 0;
4091 found_ecoff_debugging_info
= 0;
4098 /* Parse local symbols first */
4099 sym_ptr
= ((char *) debug_info
->external_sym
4100 + fh
->isymBase
* external_sym_size
);
4101 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4102 while (sym_ptr
< sym_end
)
4107 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4108 c
= parse_symbol (&sh
,
4109 debug_info
->external_aux
+ fh
->iauxBase
,
4110 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4111 sym_ptr
+= c
* external_sym_size
;
4114 /* Linenumbers. At the end, check if we can save memory.
4115 parse_lines has to look ahead an arbitrary number of PDR
4116 structures, so we swap them all first. */
4120 struct cleanup
*old_chain
;
4126 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4128 old_chain
= make_cleanup (xfree
, pr_block
);
4130 pdr_ptr
= ((char *) debug_info
->external_pdr
4131 + fh
->ipdFirst
* external_pdr_size
);
4132 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4136 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4138 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4140 /* Determine lowest PDR address, the PDRs are not always
4142 if (pdr_in
== pr_block
)
4143 lowest_pdr_addr
= pdr_in
->adr
;
4144 else if (pdr_in
->adr
< lowest_pdr_addr
)
4145 lowest_pdr_addr
= pdr_in
->adr
;
4148 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4149 if (lines
->nitems
< fh
->cline
)
4150 lines
= shrink_linetable (lines
);
4152 /* Fill in procedure info next. */
4154 pdr_in_end
= pdr_in
+ fh
->cpd
;
4155 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4156 parse_procedure (pdr_in
, 0, pst
);
4158 do_cleanups (old_chain
);
4162 LINETABLE (st
) = lines
;
4164 /* .. and our share of externals.
4165 XXX use the global list to speed up things here. how?
4166 FIXME, Maybe quit once we have found the right number of ext's? */
4167 top_stack
->cur_st
= st
;
4168 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4170 top_stack
->blocktype
= stFile
;
4172 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4173 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4174 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4176 /* If there are undefined symbols, tell the user.
4177 The alpha has an undefined symbol for every symbol that is
4178 from a shared library, so tell the user only if verbose is on. */
4179 if (info_verbose
&& n_undef_symbols
)
4181 printf_filtered (_("File %s contains %d unresolved references:"),
4182 st
->filename
, n_undef_symbols
);
4183 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4184 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4185 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4195 /* Now link the psymtab and the symtab. */
4198 current_objfile
= NULL
;
4201 /* Ancillary parsing procedures. */
4203 /* Return 1 if the symbol pointed to by SH has a cross reference
4204 to an opaque aggregate type, else 0. */
4207 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4214 if (sh
->index
== indexNil
)
4217 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4218 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4219 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4223 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4224 if (rn
->rfd
== 0xfff)
4225 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4233 /* Lookup the type at relative index RN. Return it in TPP
4234 if found and in any event come up with its name PNAME.
4235 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4236 Return value says how many aux symbols we ate. */
4239 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. */
4240 char **pname
, int bigend
, char *sym_name
)
4249 struct mdebug_pending
*pend
;
4251 *tpp
= (struct type
*) NULL
;
4253 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4255 /* Escape index means 'the next one' */
4256 if (rn
->rfd
== 0xfff)
4259 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4266 /* mips cc uses a rf of -1 for opaque struct definitions.
4267 Set TYPE_FLAG_STUB for these types so that check_typedef will
4268 resolve them if the struct gets defined in another compilation unit. */
4271 *pname
= "<undefined>";
4272 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4276 /* mips cc uses an escaped rn->index of 0 for struct return types
4277 of procedures that were compiled without -g. These will always remain
4279 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4281 *pname
= "<undefined>";
4285 /* Find the relative file descriptor and the symbol in it. */
4286 fh
= get_rfd (fd
, rf
);
4287 xref_fd
= fh
- debug_info
->fdr
;
4289 if (rn
->index
>= fh
->csym
)
4291 /* File indirect entry is corrupt. */
4292 *pname
= "<illegal>";
4293 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4297 /* If we have processed this symbol then we left a forwarding
4298 pointer to the type in the pending list. If not, we`ll put
4299 it in a list of pending types, to be processed later when
4300 the file will be. In any event, we collect the name for the
4303 esh
= ((char *) debug_info
->external_sym
4304 + ((fh
->isymBase
+ rn
->index
)
4305 * debug_swap
->external_sym_size
));
4306 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4308 /* Make sure that this type of cross reference can be handled. */
4309 if ((sh
.sc
!= scInfo
4310 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4311 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4312 && sh
.st
!= stEnum
))
4313 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4315 /* File indirect entry is corrupt. */
4316 *pname
= "<illegal>";
4317 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4321 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4323 pend
= is_pending_symbol (fh
, esh
);
4328 /* We have not yet seen this type. */
4330 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4334 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4336 a) forward declarations of structs/unions/enums which are not
4337 defined in this compilation unit.
4338 For these the type will be void. This is a bad design decision
4339 as cross referencing across compilation units is impossible
4340 due to the missing name.
4341 b) forward declarations of structs/unions/enums/typedefs which
4342 are defined later in this file or in another file in the same
4343 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4344 Simply cross reference those again to get the true type.
4345 The forward references are not entered in the pending list and
4346 in the symbol table. */
4348 (*debug_swap
->swap_tir_in
) (bigend
,
4349 &(debug_info
->external_aux
4350 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4352 if (tir
.tq0
!= tqNil
)
4353 complaint (&symfile_complaints
,
4354 _("illegal tq0 in forward typedef for %s"), sym_name
);
4358 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4360 *pname
= "<undefined>";
4367 (debug_info
->external_aux
4368 + fh
->iauxBase
+ sh
.index
+ 1),
4369 tpp
, type_code
, pname
,
4370 fh
->fBigendian
, sym_name
);
4374 /* Follow a forward typedef. This might recursively
4375 call cross_ref till we get a non typedef'ed type.
4376 FIXME: This is not correct behaviour, but gdb currently
4377 cannot handle typedefs without type copying. Type
4378 copying is impossible as we might have mutual forward
4379 references between two files and the copied type would not
4380 get filled in when we later parse its definition. */
4381 *tpp
= parse_type (xref_fd
,
4382 debug_info
->external_aux
+ fh
->iauxBase
,
4386 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4387 add_pending (fh
, esh
, *tpp
);
4391 complaint (&symfile_complaints
,
4392 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4394 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4400 else if (sh
.st
== stTypedef
)
4402 /* Parse the type for a normal typedef. This might recursively call
4403 cross_ref till we get a non typedef'ed type.
4404 FIXME: This is not correct behaviour, but gdb currently
4405 cannot handle typedefs without type copying. But type copying is
4406 impossible as we might have mutual forward references between
4407 two files and the copied type would not get filled in when
4408 we later parse its definition. */
4409 *tpp
= parse_type (xref_fd
,
4410 debug_info
->external_aux
+ fh
->iauxBase
,
4414 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4418 /* Cross reference to a struct/union/enum which is defined
4419 in another file in the same compilation unit but that file
4420 has not been parsed yet.
4421 Initialize the type only, it will be filled in when
4422 it's definition is parsed. */
4423 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4425 add_pending (fh
, esh
, *tpp
);
4428 /* We used one auxent normally, two if we got a "next one" rf. */
4433 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4434 keeping the symtab sorted */
4436 static struct symbol
*
4437 mylookup_symbol (char *name
, struct block
*block
,
4438 domain_enum domain
, enum address_class
class)
4440 struct dict_iterator iter
;
4445 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4447 if (DEPRECATED_SYMBOL_NAME (sym
)[0] == inc
4448 && SYMBOL_DOMAIN (sym
) == domain
4449 && SYMBOL_CLASS (sym
) == class
4450 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), name
) == 0)
4454 block
= BLOCK_SUPERBLOCK (block
);
4456 return mylookup_symbol (name
, block
, domain
, class);
4461 /* Add a new symbol S to a block B. */
4464 add_symbol (struct symbol
*s
, struct block
*b
)
4466 dict_add_symbol (BLOCK_DICT (b
), s
);
4469 /* Add a new block B to a symtab S */
4472 add_block (struct block
*b
, struct symtab
*s
)
4474 struct blockvector
*bv
= BLOCKVECTOR (s
);
4476 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4477 (sizeof (struct blockvector
)
4478 + BLOCKVECTOR_NBLOCKS (bv
)
4479 * sizeof (bv
->block
)));
4480 if (bv
!= BLOCKVECTOR (s
))
4481 BLOCKVECTOR (s
) = bv
;
4483 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4486 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4487 MIPS' linenumber encoding might need more than one byte
4488 to describe it, LAST is used to detect these continuation lines.
4490 Combining lines with the same line number seems like a bad idea.
4491 E.g: There could be a line number entry with the same line number after the
4492 prologue and GDB should not ignore it (this is a better way to find
4493 a prologue than mips_skip_prologue).
4494 But due to the compressed line table format there are line number entries
4495 for the same line which are needed to bridge the gap to the next
4496 line number entry. These entries have a bogus address info with them
4497 and we are unable to tell them from intended duplicate line number
4499 This is another reason why -ggdb debugging format is preferable. */
4502 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4504 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4505 Change them to something sensible. */
4509 last
= -2; /* make sure we record first line */
4511 if (last
== lineno
) /* skip continuation lines */
4514 lt
->item
[lt
->nitems
].line
= lineno
;
4515 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4519 /* Sorting and reordering procedures */
4521 /* Blocks with a smaller low bound should come first */
4524 compare_blocks (const void *arg1
, const void *arg2
)
4527 struct block
**b1
= (struct block
**) arg1
;
4528 struct block
**b2
= (struct block
**) arg2
;
4530 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4532 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4536 /* Sort the blocks of a symtab S.
4537 Reorder the blocks in the blockvector by code-address,
4538 as required by some MI search routines */
4541 sort_blocks (struct symtab
*s
)
4543 struct blockvector
*bv
= BLOCKVECTOR (s
);
4545 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4548 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4549 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4550 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4551 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4555 * This is very unfortunate: normally all functions are compiled in
4556 * the order they are found, but if the file is compiled -O3 things
4557 * are very different. It would be nice to find a reliable test
4558 * to detect -O3 images in advance.
4560 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4561 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4562 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4563 sizeof (struct block
*),
4568 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4570 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4571 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4572 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4573 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4576 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4577 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4579 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4580 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4581 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4582 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4586 /* Constructor/restructor/destructor procedures */
4588 /* Allocate a new symtab for NAME. Needs an estimate of how many
4589 linenumbers MAXLINES we'll put in it */
4591 static struct symtab
*
4592 new_symtab (char *name
, int maxlines
, struct objfile
*objfile
)
4594 struct symtab
*s
= allocate_symtab (name
, objfile
);
4596 LINETABLE (s
) = new_linetable (maxlines
);
4598 /* All symtabs must have at least two blocks */
4599 BLOCKVECTOR (s
) = new_bvect (2);
4600 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4601 = new_block (NON_FUNCTION_BLOCK
);
4602 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4603 = new_block (NON_FUNCTION_BLOCK
);
4604 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4605 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4607 s
->free_code
= free_linetable
;
4608 s
->debugformat
= obsavestring ("ECOFF", 5,
4609 &objfile
->objfile_obstack
);
4613 /* Allocate a new partial_symtab NAME */
4615 static struct partial_symtab
*
4616 new_psymtab (char *name
, struct objfile
*objfile
)
4618 struct partial_symtab
*psymtab
;
4620 psymtab
= allocate_psymtab (name
, objfile
);
4621 psymtab
->section_offsets
= objfile
->section_offsets
;
4623 /* Keep a backpointer to the file's symbols */
4625 psymtab
->read_symtab_private
= ((char *)
4626 obstack_alloc (&objfile
->objfile_obstack
,
4627 sizeof (struct symloc
)));
4628 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4629 CUR_BFD (psymtab
) = cur_bfd
;
4630 DEBUG_SWAP (psymtab
) = debug_swap
;
4631 DEBUG_INFO (psymtab
) = debug_info
;
4632 PENDING_LIST (psymtab
) = pending_list
;
4634 /* The way to turn this into a symtab is to call... */
4635 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4640 /* Allocate a linetable array of the given SIZE. Since the struct
4641 already includes one item, we subtract one when calculating the
4642 proper size to allocate. */
4644 static struct linetable
*
4645 new_linetable (int size
)
4647 struct linetable
*l
;
4649 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4650 l
= (struct linetable
*) xmalloc (size
);
4655 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4656 I am not so sure about the 3.4 ones.
4658 Since the struct linetable already includes one item, we subtract one when
4659 calculating the proper size to allocate. */
4661 static struct linetable
*
4662 shrink_linetable (struct linetable
*lt
)
4665 return (struct linetable
*) xrealloc ((void *) lt
,
4666 (sizeof (struct linetable
)
4668 * sizeof (lt
->item
))));
4671 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4673 static struct blockvector
*
4674 new_bvect (int nblocks
)
4676 struct blockvector
*bv
;
4679 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4680 bv
= (struct blockvector
*) xzalloc (size
);
4682 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4687 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4688 is non-zero, assume the block is associated to a function, and make
4689 sure that the symbols are stored linearly; otherwise, store them
4692 static struct block
*
4693 new_block (enum block_type type
)
4695 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4696 allocate the block. Which, in turn, suggests that the block
4697 should be allocated on an obstack. */
4698 struct block
*retval
= xzalloc (sizeof (struct block
));
4700 if (type
== FUNCTION_BLOCK
)
4701 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4703 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4708 /* Create a new symbol with printname NAME */
4710 static struct symbol
*
4711 new_symbol (char *name
)
4713 struct symbol
*s
= ((struct symbol
*)
4714 obstack_alloc (¤t_objfile
->objfile_obstack
,
4715 sizeof (struct symbol
)));
4717 memset (s
, 0, sizeof (*s
));
4718 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4719 SYMBOL_SET_NAMES (s
, name
, strlen (name
), current_objfile
);
4723 /* Create a new type with printname NAME */
4725 static struct type
*
4726 new_type (char *name
)
4730 t
= alloc_type (current_objfile
);
4731 TYPE_NAME (t
) = name
;
4732 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4736 /* Read ECOFF debugging information from a BFD section. This is
4737 called from elfread.c. It parses the section into a
4738 ecoff_debug_info struct, and then lets the rest of the file handle
4742 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4743 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4745 bfd
*abfd
= objfile
->obfd
;
4746 struct ecoff_debug_info
*info
;
4747 struct cleanup
*back_to
;
4749 /* FIXME: It's not clear whether we should be getting minimal symbol
4750 information from .mdebug in an ELF file, or whether we will.
4751 Re-initialize the minimal symbol reader in case we do. */
4753 init_minimal_symbol_collection ();
4754 back_to
= make_cleanup_discard_minimal_symbols ();
4756 info
= ((struct ecoff_debug_info
*)
4757 obstack_alloc (&objfile
->objfile_obstack
,
4758 sizeof (struct ecoff_debug_info
)));
4760 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4761 error (_("Error reading ECOFF debugging information: %s"),
4762 bfd_errmsg (bfd_get_error ()));
4764 mdebug_build_psymtabs (objfile
, swap
, info
);
4766 install_minimal_symbols (objfile
);
4767 do_cleanups (back_to
);
4771 _initialize_mdebugread (void)
4774 init_type (TYPE_CODE_VOID
, 1,
4776 "void", (struct objfile
*) NULL
);
4778 init_type (TYPE_CODE_INT
, 1,
4780 "char", (struct objfile
*) NULL
);
4781 mdebug_type_unsigned_char
=
4782 init_type (TYPE_CODE_INT
, 1,
4784 "unsigned char", (struct objfile
*) NULL
);
4786 init_type (TYPE_CODE_INT
, 2,
4788 "short", (struct objfile
*) NULL
);
4789 mdebug_type_unsigned_short
=
4790 init_type (TYPE_CODE_INT
, 2,
4792 "unsigned short", (struct objfile
*) NULL
);
4793 mdebug_type_int_32
=
4794 init_type (TYPE_CODE_INT
, 4,
4796 "int", (struct objfile
*) NULL
);
4797 mdebug_type_unsigned_int_32
=
4798 init_type (TYPE_CODE_INT
, 4,
4800 "unsigned int", (struct objfile
*) NULL
);
4801 mdebug_type_int_64
=
4802 init_type (TYPE_CODE_INT
, 8,
4804 "int", (struct objfile
*) NULL
);
4805 mdebug_type_unsigned_int_64
=
4806 init_type (TYPE_CODE_INT
, 8,
4808 "unsigned int", (struct objfile
*) NULL
);
4809 mdebug_type_long_32
=
4810 init_type (TYPE_CODE_INT
, 4,
4812 "long", (struct objfile
*) NULL
);
4813 mdebug_type_unsigned_long_32
=
4814 init_type (TYPE_CODE_INT
, 4,
4816 "unsigned long", (struct objfile
*) NULL
);
4817 mdebug_type_long_64
=
4818 init_type (TYPE_CODE_INT
, 8,
4820 "long", (struct objfile
*) NULL
);
4821 mdebug_type_unsigned_long_64
=
4822 init_type (TYPE_CODE_INT
, 8,
4824 "unsigned long", (struct objfile
*) NULL
);
4825 mdebug_type_long_long_64
=
4826 init_type (TYPE_CODE_INT
, 8,
4828 "long long", (struct objfile
*) NULL
);
4829 mdebug_type_unsigned_long_long_64
=
4830 init_type (TYPE_CODE_INT
, 8,
4832 "unsigned long long", (struct objfile
*) NULL
);
4833 mdebug_type_adr_32
=
4834 init_type (TYPE_CODE_PTR
, 4,
4836 "adr_32", (struct objfile
*) NULL
);
4837 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4838 mdebug_type_adr_64
=
4839 init_type (TYPE_CODE_PTR
, 8,
4841 "adr_64", (struct objfile
*) NULL
);
4842 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4844 init_type (TYPE_CODE_FLT
,
4845 gdbarch_float_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4846 0, "float", (struct objfile
*) NULL
);
4847 mdebug_type_double
=
4848 init_type (TYPE_CODE_FLT
,
4849 gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4850 0, "double", (struct objfile
*) NULL
);
4851 mdebug_type_complex
=
4852 init_type (TYPE_CODE_COMPLEX
,
4853 2 * gdbarch_float_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4854 0, "complex", (struct objfile
*) NULL
);
4855 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4856 mdebug_type_double_complex
=
4857 init_type (TYPE_CODE_COMPLEX
,
4858 2 * gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4859 0, "double complex", (struct objfile
*) NULL
);
4860 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4862 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4864 mdebug_type_string
=
4865 init_type (TYPE_CODE_STRING
,
4866 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4868 (struct objfile
*) NULL
);
4870 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4871 good? Would we be better off with TYPE_CODE_ERROR? Should
4872 TYPE_CODE_ERROR print things in hex if it knows the size? */
4873 mdebug_type_fixed_dec
=
4874 init_type (TYPE_CODE_INT
,
4875 gdbarch_int_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4877 (struct objfile
*) NULL
);
4879 mdebug_type_float_dec
=
4880 init_type (TYPE_CODE_ERROR
,
4881 gdbarch_double_bit (current_gdbarch
) / TARGET_CHAR_BIT
,
4882 0, "floating decimal",
4883 (struct objfile
*) NULL
);
4885 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4886 "<function, no debug info>", NULL
);
4887 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4888 nodebug_var_symbol_type
=
4889 init_type (TYPE_CODE_INT
,
4890 gdbarch_int_bit (current_gdbarch
) / HOST_CHAR_BIT
, 0,
4891 "<variable, no debug info>", NULL
);