1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
46 #include "filenames.h"
48 #include "gdb_obstack.h"
50 #include "stabsread.h"
51 #include "complaints.h"
53 #include "gdb-demangle.h"
55 #include "dictionary.h"
56 #include "mdebugread.h"
63 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
65 #include "libaout.h" /* Private BFD a.out information. */
66 #include "aout/aout64.h"
67 #include "aout/stab_gnu.h" /* STABS information. */
69 #include "expression.h"
71 extern void _initialize_mdebugread (void);
73 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
74 We use this define in order to know whether we should override a
75 symbol's ECOFF section with its ELF section. This is necessary in
76 case the symbol's ELF section could not be represented in ECOFF. */
77 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
78 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
80 /* The objfile we are currently reading. */
82 static struct objfile
*mdebugread_objfile
;
86 /* We put a pointer to this structure in the read_symtab_private field
91 /* Index of the FDR that this psymtab represents. */
93 /* The BFD that the psymtab was created from. */
95 const struct ecoff_debug_swap
*debug_swap
;
96 struct ecoff_debug_info
*debug_info
;
97 struct mdebug_pending
**pending_list
;
98 /* Pointer to external symbols for this file. */
100 /* Size of extern_tab. */
102 enum language pst_language
;
105 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
106 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
107 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
108 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
109 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
110 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
112 #define SC_IS_TEXT(sc) ((sc) == scText \
113 || (sc) == scRConst \
116 #define SC_IS_DATA(sc) ((sc) == scData \
121 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
122 #define SC_IS_BSS(sc) ((sc) == scBss)
123 #define SC_IS_SBSS(sc) ((sc) == scSBss)
124 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
126 /* Various complaints about symbol reading that don't abort the process. */
128 index_complaint (const char *arg1
)
130 complaint (&symfile_complaints
, _("bad aux index at symbol %s"), arg1
);
134 unknown_ext_complaint (const char *arg1
)
136 complaint (&symfile_complaints
, _("unknown external symbol %s"), arg1
);
140 basic_type_complaint (int arg1
, const char *arg2
)
142 complaint (&symfile_complaints
, _("cannot map ECOFF basic type 0x%x for %s"),
147 bad_tag_guess_complaint (const char *arg1
)
149 complaint (&symfile_complaints
,
150 _("guessed tag type of %s incorrectly"), arg1
);
154 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
156 complaint (&symfile_complaints
, _("bad rfd entry for %s: file %d, index %d"),
161 unexpected_type_code_complaint (const char *arg1
)
163 complaint (&symfile_complaints
, _("unexpected type code for %s"), arg1
);
166 /* Macros and extra defs. */
168 /* Puns: hard to find whether -g was used and how. */
170 #define MIN_GLEVEL GLEVEL_0
171 #define compare_glevel(a,b) \
172 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
173 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
175 /* Things that really are local to this module. */
177 /* Remember what we deduced to be the source language of this psymtab. */
179 static enum language psymtab_language
= language_unknown
;
185 /* How to parse debugging information for CUR_BFD. */
187 static const struct ecoff_debug_swap
*debug_swap
;
189 /* Pointers to debugging information for CUR_BFD. */
191 static struct ecoff_debug_info
*debug_info
;
193 /* Pointer to current file decriptor record, and its index. */
198 /* Index of current symbol. */
202 /* Note how much "debuggable" this image is. We would like
203 to see at least one FDR with full symbols. */
205 static int max_gdbinfo
;
206 static int max_glevel
;
208 /* When examining .o files, report on undefined symbols. */
210 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
212 /* Pseudo symbol to use when putting stabs into the symbol table. */
214 static char stabs_symbol
[] = STABS_SYMBOL
;
216 /* Nonzero if we have seen ecoff debugging info for a file. */
218 static int found_ecoff_debugging_info
;
220 /* Forward declarations. */
222 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
225 static void parse_partial_symbols (struct objfile
*);
227 static int has_opaque_xref (FDR
*, SYMR
*);
229 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
230 char **, int, char *);
232 static struct symbol
*new_symbol (char *);
234 static struct type
*new_type (char *);
236 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
238 static struct block
*new_block (enum block_type
);
240 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
242 static struct linetable
*new_linetable (int);
244 static struct blockvector
*new_bvect (int);
246 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
249 static struct symbol
*mylookup_symbol (char *, const struct block
*,
250 domain_enum
, enum address_class
);
252 static void sort_blocks (struct symtab
*);
254 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
256 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
257 struct partial_symtab
*, const char *);
259 static void add_block (struct block
*, struct symtab
*);
261 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
263 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
265 static struct linetable
*shrink_linetable (struct linetable
*);
267 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
270 static char *mdebug_next_symbol_text (struct objfile
*);
272 /* Exported procedure: Builds a symtab from the partial symtab SELF.
273 Restores the environment in effect when SELF was created, delegates
274 most of the work to an ancillary procedure, and sorts
275 and reorders the symtab list at the end. SELF is not NULL. */
278 mdebug_read_symtab (struct partial_symtab
*self
, struct objfile
*objfile
)
282 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
283 gdb_flush (gdb_stdout
);
286 next_symbol_text_func
= mdebug_next_symbol_text
;
288 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
290 /* Match with global symbols. This only needs to be done once,
291 after all of the symtabs and dependencies have been read in. */
292 scan_file_globals (objfile
);
295 printf_filtered (_("done.\n"));
298 /* File-level interface functions. */
300 /* Find a file descriptor given its index RF relative to a file CF. */
303 get_rfd (int cf
, int rf
)
309 fdrs
= debug_info
->fdr
;
311 /* Object files do not have the RFD table, all refs are absolute. */
314 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
315 ((char *) debug_info
->external_rfd
317 * debug_swap
->external_rfd_size
)),
322 /* Return a safer print NAME for a file descriptor. */
328 return "<stripped file>";
331 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
335 /* Read in and parse the symtab of the file OBJFILE. Symbols from
336 different sections are relocated via the SECTION_OFFSETS. */
339 mdebug_build_psymtabs (struct objfile
*objfile
,
340 const struct ecoff_debug_swap
*swap
,
341 struct ecoff_debug_info
*info
)
343 cur_bfd
= objfile
->obfd
;
347 stabsread_new_init ();
348 buildsym_new_init ();
349 free_header_files ();
350 init_header_files ();
352 /* Make sure all the FDR information is swapped in. */
353 if (info
->fdr
== (FDR
*) NULL
)
359 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
360 (info
->symbolic_header
.ifdMax
362 fdr_src
= info
->external_fdr
;
364 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
366 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
367 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
370 parse_partial_symbols (objfile
);
373 /* Check to make sure file was compiled with -g. If not, warn the
374 user of this limitation. */
375 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
377 if (max_gdbinfo
== 0)
378 printf_unfiltered (_("\n%s not compiled with -g, "
379 "debugging support is limited.\n"),
381 printf_unfiltered (_("You should compile with -g2 or "
382 "-g3 for best debugging support.\n"));
383 gdb_flush (gdb_stdout
);
388 /* Local utilities */
390 /* Map of FDR indexes to partial symtabs. */
394 struct partial_symtab
*pst
; /* the psymtab proper */
395 long n_globals
; /* exported globals (external symbols) */
396 long globals_offset
; /* cumulative */
400 /* Utility stack, used to nest procedures and blocks properly.
401 It is a doubly linked list, to avoid too many alloc/free.
402 Since we might need it quite a few times it is NOT deallocated
405 static struct parse_stack
407 struct parse_stack
*next
, *prev
;
408 struct symtab
*cur_st
; /* Current symtab. */
409 struct block
*cur_block
; /* Block in it. */
411 /* What are we parsing. stFile, or stBlock are for files and
412 blocks. stProc or stStaticProc means we have seen the start of a
413 procedure, but not the start of the block within in. When we see
414 the start of that block, we change it to stNil, without pushing a
415 new block, i.e. stNil means both a procedure and a block. */
419 struct type
*cur_type
; /* Type we parse fields for. */
420 int cur_field
; /* Field number in cur_type. */
421 CORE_ADDR procadr
; /* Start addres of this procedure. */
422 int numargs
; /* Its argument count. */
425 *top_stack
; /* Top stack ptr */
428 /* Enter a new lexical context. */
431 push_parse_stack (void)
433 struct parse_stack
*newobj
;
435 /* Reuse frames if possible. */
436 if (top_stack
&& top_stack
->prev
)
437 newobj
= top_stack
->prev
;
439 newobj
= XCNEW (struct parse_stack
);
440 /* Initialize new frame with previous content. */
443 struct parse_stack
*prev
= newobj
->prev
;
445 *newobj
= *top_stack
;
446 top_stack
->prev
= newobj
;
448 newobj
->next
= top_stack
;
453 /* Exit a lexical context. */
456 pop_parse_stack (void)
461 top_stack
= top_stack
->next
;
465 /* Cross-references might be to things we haven't looked at
466 yet, e.g. type references. To avoid too many type
467 duplications we keep a quick fixup table, an array
468 of lists of references indexed by file descriptor. */
470 struct mdebug_pending
472 struct mdebug_pending
*next
; /* link */
473 char *s
; /* the unswapped symbol */
474 struct type
*t
; /* its partial type descriptor */
478 /* The pending information is kept for an entire object file. We
479 allocate the pending information table when we create the partial
480 symbols, and we store a pointer to the single table in each
483 static struct mdebug_pending
**pending_list
;
485 /* Check whether we already saw symbol SH in file FH. */
487 static struct mdebug_pending
*
488 is_pending_symbol (FDR
*fh
, char *sh
)
490 int f_idx
= fh
- debug_info
->fdr
;
491 struct mdebug_pending
*p
;
493 /* Linear search is ok, list is typically no more than 10 deep. */
494 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
500 /* Add a new symbol SH of type T. */
503 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
505 int f_idx
= fh
- debug_info
->fdr
;
506 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
508 /* Make sure we do not make duplicates. */
511 p
= ((struct mdebug_pending
*)
512 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
513 sizeof (struct mdebug_pending
)));
516 p
->next
= pending_list
[f_idx
];
517 pending_list
[f_idx
] = p
;
522 /* Parsing Routines proper. */
524 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
525 For blocks, procedures and types we open a new lexical context.
526 This is basically just a big switch on the symbol's type. Argument
527 AX is the base pointer of aux symbols for this file (fh->iauxBase).
528 EXT_SH points to the unswapped symbol, which is needed for struct,
529 union, etc., types; it is NULL for an EXTR. BIGEND says whether
530 aux symbols are big-endian or little-endian. Return count of
531 SYMR's handled (normally one). */
534 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
536 return gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
539 static const struct symbol_register_ops mdebug_register_funcs
= {
543 /* The "aclass" indices for computed symbols. */
545 static int mdebug_register_index
;
546 static int mdebug_regparm_index
;
549 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
550 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
552 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
553 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
554 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
558 struct mdebug_pending
*pend
;
562 enum address_class theclass
;
564 long svalue
= sh
->value
;
567 if (ext_sh
== (char *) NULL
)
568 name
= debug_info
->ssext
+ sh
->iss
;
570 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
576 /* Do not relocate relative values.
577 The value of a stEnd symbol is the displacement from the
578 corresponding start symbol value.
579 The value of a stBlock symbol is the displacement from the
580 procedure address. */
581 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
582 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
589 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
593 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
602 case stGlobal
: /* External symbol, goes into global block. */
603 theclass
= LOC_STATIC
;
604 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
606 s
= new_symbol (name
);
607 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
610 case stStatic
: /* Static data, goes into current block. */
611 theclass
= LOC_STATIC
;
612 b
= top_stack
->cur_block
;
613 s
= new_symbol (name
);
614 if (SC_IS_COMMON (sh
->sc
))
616 /* It is a FORTRAN common block. At least for SGI Fortran the
617 address is not in the symbol; we need to fix it later in
618 scan_file_globals. */
619 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
620 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
621 global_sym_chain
[bucket
] = s
;
624 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
627 case stLocal
: /* Local variable, goes into current block. */
628 b
= top_stack
->cur_block
;
629 s
= new_symbol (name
);
630 SYMBOL_VALUE (s
) = svalue
;
631 if (sh
->sc
== scRegister
)
632 theclass
= mdebug_register_index
;
634 theclass
= LOC_LOCAL
;
636 data
: /* Common code for symbols describing data. */
637 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
638 SYMBOL_ACLASS_INDEX (s
) = theclass
;
639 add_symbol (s
, top_stack
->cur_st
, b
);
641 /* Type could be missing if file is compiled without debugging info. */
642 if (SC_IS_UNDEF (sh
->sc
)
643 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
644 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
646 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
647 /* Value of a data symbol is its memory address. */
650 case stParam
: /* Arg to procedure, goes into current
653 found_ecoff_debugging_info
= 1;
654 top_stack
->numargs
++;
656 /* Special GNU C++ name. */
657 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
658 name
= "this"; /* FIXME, not alloc'd in obstack. */
659 s
= new_symbol (name
);
661 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
662 SYMBOL_IS_ARGUMENT (s
) = 1;
666 /* Pass by value in register. */
667 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
670 /* Pass by reference on stack. */
671 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
674 /* Pass by reference in register. */
675 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
678 /* Pass by value on stack. */
679 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
682 SYMBOL_VALUE (s
) = svalue
;
683 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
684 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
687 case stLabel
: /* label, goes into current block. */
688 s
= new_symbol (name
);
689 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
690 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
691 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
692 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
693 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
696 case stProc
: /* Procedure, usually goes into global block. */
697 case stStaticProc
: /* Static procedure, goes into current block. */
698 /* For stProc symbol records, we need to check the storage class
699 as well, as only (stProc, scText) entries represent "real"
700 procedures - See the Compaq document titled "Object File /
701 Symbol Table Format Specification" for more information.
702 If the storage class is not scText, we discard the whole block
703 of symbol records for this stProc. */
704 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
706 char *ext_tsym
= ext_sh
;
707 int keep_counting
= 1;
710 while (keep_counting
)
712 ext_tsym
+= external_sym_size
;
713 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
723 complaint (&symfile_complaints
,
724 _("unknown symbol type 0x%x"), sh
->st
);
730 s
= new_symbol (name
);
731 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
732 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
733 /* Type of the return value. */
734 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
735 t
= objfile_type (objfile
)->builtin_int
;
738 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
739 if (strcmp (name
, "malloc") == 0
740 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
742 /* I don't know why, but, at least under Alpha GNU/Linux,
743 when linking against a malloc without debugging
744 symbols, its read as a function returning void---this
745 is bad because it means we cannot call functions with
746 string arguments interactively; i.e., "call
747 printf("howdy\n")" would fail with the error message
748 "program has no memory available". To avoid this, we
749 patch up the type and make it void*
750 instead. (davidm@azstarnet.com). */
751 t
= make_pointer_type (t
, NULL
);
754 b
= top_stack
->cur_block
;
755 if (sh
->st
== stProc
)
757 const struct blockvector
*bv
758 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
760 /* The next test should normally be true, but provides a
761 hook for nested functions (which we don't want to make
763 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
764 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
765 /* Irix 5 sometimes has duplicate names for the same
766 function. We want to add such names up at the global
767 level, not as a nested function. */
768 else if (sh
->value
== top_stack
->procadr
)
769 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
771 add_symbol (s
, top_stack
->cur_st
, b
);
773 /* Make a type for the procedure itself. */
774 SYMBOL_TYPE (s
) = lookup_function_type (t
);
776 /* All functions in C++ have prototypes. For C we don't have enough
777 information in the debug info. */
778 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
779 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
781 /* Create and enter a new lexical context. */
782 b
= new_block (FUNCTION_BLOCK
);
783 SYMBOL_BLOCK_VALUE (s
) = b
;
784 BLOCK_FUNCTION (b
) = s
;
785 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
786 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
787 add_block (b
, top_stack
->cur_st
);
789 /* Not if we only have partial info. */
790 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
794 top_stack
->cur_block
= b
;
795 top_stack
->blocktype
= sh
->st
;
796 top_stack
->cur_type
= SYMBOL_TYPE (s
);
797 top_stack
->cur_field
= -1;
798 top_stack
->procadr
= sh
->value
;
799 top_stack
->numargs
= 0;
802 /* Beginning of code for structure, union, and enum definitions.
803 They all share a common set of local variables, defined here. */
805 enum type_code type_code
;
811 case stStruct
: /* Start a block defining a struct type. */
812 type_code
= TYPE_CODE_STRUCT
;
813 goto structured_common
;
815 case stUnion
: /* Start a block defining a union type. */
816 type_code
= TYPE_CODE_UNION
;
817 goto structured_common
;
819 case stEnum
: /* Start a block defining an enum type. */
820 type_code
= TYPE_CODE_ENUM
;
821 goto structured_common
;
823 case stBlock
: /* Either a lexical block, or some type. */
824 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
825 goto case_stBlock_code
; /* Lexical block */
827 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
829 /* Common code for handling struct, union, enum, and/or as-yet-
830 unknown-type blocks of info about structured data. `type_code'
831 has been set to the proper TYPE_CODE, if we know it. */
833 found_ecoff_debugging_info
= 1;
835 top_stack
->blocktype
= stBlock
;
837 /* First count the number of fields and the highest value. */
840 for (ext_tsym
= ext_sh
+ external_sym_size
;
842 ext_tsym
+= external_sym_size
)
846 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
851 /* C++ encodes class types as structures where there the
852 methods are encoded as stProc. The scope of stProc
853 symbols also ends with stEnd, thus creating a risk of
854 taking the wrong stEnd symbol record as the end of
855 the current struct, which would cause GDB to undercount
856 the real number of fields in this struct. To make sure
857 we really reached the right stEnd symbol record, we
858 check the associated name, and match it against the
859 struct name. Since method names are mangled while
860 the class name is not, there is no risk of having a
861 method whose name is identical to the class name
862 (in particular constructor method names are different
863 from the class name). There is therefore no risk that
864 this check stops the count on the StEnd of a method.
866 Also, assume that we're really at the end when tsym.iss
868 if (tsym
.iss
== issNull
869 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
875 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
877 /* If the type of the member is Nil (or Void),
878 without qualifiers, assume the tag is an
880 Alpha cc -migrate enums are recognized by a zero
881 index and a zero symbol value.
882 DU 4.0 cc enums are recognized by a member type of
883 btEnum without qualifiers and a zero symbol value. */
884 if (tsym
.index
== indexNil
885 || (tsym
.index
== 0 && sh
->value
== 0))
886 type_code
= TYPE_CODE_ENUM
;
889 (*debug_swap
->swap_tir_in
) (bigend
,
890 &ax
[tsym
.index
].a_ti
,
892 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
893 || (tir
.bt
== btEnum
&& sh
->value
== 0))
895 type_code
= TYPE_CODE_ENUM
;
899 if (tsym
.value
> max_value
)
900 max_value
= tsym
.value
;
909 /* This is a no-op; is it trying to tell us something
910 we should be checking? */
911 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
915 /* This is something like a struct within a
916 struct. Skip over the fields of the inner
917 struct. The -1 is because the for loop will
918 increment ext_tsym. */
919 ext_tsym
= ((char *) debug_info
->external_sym
920 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
921 * external_sym_size
));
927 /* mips cc puts out a typedef for struct x if it is not yet
928 defined when it encounters
929 struct y { struct x *xp; };
934 /* Irix5 cc puts out a stIndirect for struct x if it is not
935 yet defined when it encounters
936 struct y { struct x *xp; };
941 complaint (&symfile_complaints
,
942 _("declaration block contains "
943 "unhandled symbol type %d"),
949 /* In an stBlock, there is no way to distinguish structs,
950 unions, and enums at this point. This is a bug in the
951 original design (that has been fixed with the recent
952 addition of the stStruct, stUnion, and stEnum symbol
953 types.) The way you can tell is if/when you see a variable
954 or field of that type. In that case the variable's type
955 (in the AUX table) says if the type is struct, union, or
956 enum, and points back to the stBlock here. So you can
957 patch the tag kind up later - but only if there actually is
958 a variable or field of that type.
960 So until we know for sure, we will guess at this point.
962 If the first member has index==indexNil or a void type,
963 assume we have an enumeration.
964 Otherwise, if there is more than one member, and all
965 the members have offset 0, assume we have a union.
966 Otherwise, assume we have a struct.
968 The heuristic could guess wrong in the case of of an
969 enumeration with no members or a union with one (or zero)
970 members, or when all except the last field of a struct have
971 width zero. These are uncommon and/or illegal situations,
972 and in any case guessing wrong probably doesn't matter
975 But if we later do find out we were wrong, we fixup the tag
976 kind. Members of an enumeration must be handled
977 differently from struct/union fields, and that is harder to
978 patch up, but luckily we shouldn't need to. (If there are
979 any enumeration members, we can tell for sure it's an enum
982 if (type_code
== TYPE_CODE_UNDEF
)
984 if (nfields
> 1 && max_value
== 0)
985 type_code
= TYPE_CODE_UNION
;
987 type_code
= TYPE_CODE_STRUCT
;
990 /* Create a new type or use the pending type. */
991 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
992 if (pend
== (struct mdebug_pending
*) NULL
)
995 add_pending (cur_fdr
, ext_sh
, t
);
1000 /* Do not set the tag name if it is a compiler generated tag name
1001 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1002 Alpha cc puts out an sh->iss of zero for those. */
1003 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1004 TYPE_TAG_NAME (t
) = NULL
;
1006 TYPE_TAG_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1007 name
, (char *) NULL
);
1009 TYPE_CODE (t
) = type_code
;
1010 TYPE_LENGTH (t
) = sh
->value
;
1011 TYPE_NFIELDS (t
) = nfields
;
1012 TYPE_FIELDS (t
) = f
= ((struct field
*)
1014 nfields
* sizeof (struct field
)));
1016 if (type_code
== TYPE_CODE_ENUM
)
1018 int unsigned_enum
= 1;
1020 /* This is a non-empty enum. */
1022 /* DEC c89 has the number of enumerators in the sh.value field,
1023 not the type length, so we have to compensate for that
1024 incompatibility quirk.
1025 This might do the wrong thing for an enum with one or two
1026 enumerators and gcc -gcoff -fshort-enums, but these cases
1027 are hopefully rare enough.
1028 Alpha cc -migrate has a sh.value field of zero, we adjust
1030 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1031 || TYPE_LENGTH (t
) == 0)
1032 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1033 for (ext_tsym
= ext_sh
+ external_sym_size
;
1035 ext_tsym
+= external_sym_size
)
1038 struct symbol
*enum_sym
;
1040 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1042 if (tsym
.st
!= stMember
)
1045 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1046 FIELD_TYPE (*f
) = t
;
1047 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1048 FIELD_BITSIZE (*f
) = 0;
1050 enum_sym
= allocate_symbol (mdebugread_objfile
);
1051 SYMBOL_SET_LINKAGE_NAME
1053 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1054 f
->name
, strlen (f
->name
)));
1055 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1056 SYMBOL_TYPE (enum_sym
) = t
;
1057 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1058 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1059 if (SYMBOL_VALUE (enum_sym
) < 0)
1061 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1063 /* Skip the stMembers that we've handled. */
1068 TYPE_UNSIGNED (t
) = 1;
1070 /* Make this the current type. */
1071 top_stack
->cur_type
= t
;
1072 top_stack
->cur_field
= 0;
1074 /* Do not create a symbol for alpha cc unnamed structs. */
1078 /* gcc puts out an empty struct for an opaque struct definitions,
1079 do not create a symbol for it either. */
1080 if (TYPE_NFIELDS (t
) == 0)
1086 s
= new_symbol (name
);
1087 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1088 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1089 SYMBOL_VALUE (s
) = 0;
1090 SYMBOL_TYPE (s
) = t
;
1091 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1094 /* End of local variables shared by struct, union, enum, and
1095 block (as yet unknown struct/union/enum) processing. */
1099 found_ecoff_debugging_info
= 1;
1100 /* Beginnning of (code) block. Value of symbol
1101 is the displacement from procedure start. */
1102 push_parse_stack ();
1104 /* Do not start a new block if this is the outermost block of a
1105 procedure. This allows the LOC_BLOCK symbol to point to the
1106 block with the local variables, so funcname::var works. */
1107 if (top_stack
->blocktype
== stProc
1108 || top_stack
->blocktype
== stStaticProc
)
1110 top_stack
->blocktype
= stNil
;
1114 top_stack
->blocktype
= stBlock
;
1115 b
= new_block (NON_FUNCTION_BLOCK
);
1116 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1117 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1118 top_stack
->cur_block
= b
;
1119 add_block (b
, top_stack
->cur_st
);
1122 case stEnd
: /* end (of anything) */
1123 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1125 /* Finished with type */
1126 top_stack
->cur_type
= 0;
1128 else if (sh
->sc
== scText
&&
1129 (top_stack
->blocktype
== stProc
||
1130 top_stack
->blocktype
== stStaticProc
))
1132 /* Finished with procedure */
1133 const struct blockvector
*bv
1134 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1135 struct mdebug_extra_func_info
*e
;
1136 struct block
*b
= top_stack
->cur_block
;
1137 struct type
*ftype
= top_stack
->cur_type
;
1140 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1142 /* Make up special symbol to contain procedure specific info. */
1143 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1144 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1145 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1146 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1147 e
= ((struct mdebug_extra_func_info
*)
1148 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
1149 sizeof (struct mdebug_extra_func_info
)));
1150 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1151 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1152 e
->numargs
= top_stack
->numargs
;
1153 e
->pdr
.framereg
= -1;
1154 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1156 /* f77 emits proc-level with address bounds==[0,0],
1157 So look for such child blocks, and patch them. */
1158 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1160 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1162 if (BLOCK_SUPERBLOCK (b_bad
) == b
1163 && BLOCK_START (b_bad
) == top_stack
->procadr
1164 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1166 BLOCK_START (b_bad
) = BLOCK_START (b
);
1167 BLOCK_END (b_bad
) = BLOCK_END (b
);
1171 if (TYPE_NFIELDS (ftype
) <= 0)
1173 /* No parameter type information is recorded with the function's
1174 type. Set that from the type of the parameter symbols. */
1175 int nparams
= top_stack
->numargs
;
1181 struct block_iterator iter
;
1183 TYPE_NFIELDS (ftype
) = nparams
;
1184 TYPE_FIELDS (ftype
) = (struct field
*)
1185 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1188 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1190 if (iparams
== nparams
)
1193 if (SYMBOL_IS_ARGUMENT (sym
))
1195 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1196 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1203 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1205 /* End of (code) block. The value of the symbol is the
1206 displacement from the procedure`s start address of the
1207 end of this block. */
1208 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1210 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1212 /* End of outermost block. Pop parse stack and ignore. The
1213 following stEnd of stProc will take care of the block. */
1216 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1218 /* End of file. Pop parse stack and ignore. Higher
1219 level code deals with this. */
1223 complaint (&symfile_complaints
,
1224 _("stEnd with storage class %d not handled"), sh
->sc
);
1226 pop_parse_stack (); /* Restore previous lexical context. */
1229 case stMember
: /* member of struct or union */
1230 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1231 FIELD_NAME (*f
) = name
;
1232 SET_FIELD_BITPOS (*f
, sh
->value
);
1234 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1235 &bitsize
, bigend
, name
);
1236 FIELD_BITSIZE (*f
) = bitsize
;
1239 case stIndirect
: /* forward declaration on Irix5 */
1240 /* Forward declarations from Irix5 cc are handled by cross_ref,
1244 case stTypedef
: /* type definition */
1245 found_ecoff_debugging_info
= 1;
1247 /* Typedefs for forward declarations and opaque structs from alpha cc
1248 are handled by cross_ref, skip them. */
1252 /* Parse the type or use the pending type. */
1253 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1254 if (pend
== (struct mdebug_pending
*) NULL
)
1256 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1257 add_pending (cur_fdr
, ext_sh
, t
);
1262 /* Mips cc puts out a typedef with the name of the struct for forward
1263 declarations. These should not go into the symbol table and
1264 TYPE_NAME should not be set for them.
1265 They can't be distinguished from an intentional typedef to
1266 the same name however:
1268 struct x { int ix; int jx; };
1272 struct xx {int ixx; int jxx; };
1273 generates a cross referencing stTypedef for x and xx.
1274 The user visible effect of this is that the type of a pointer
1275 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1276 The problem is fixed with alpha cc and Irix5 cc. */
1278 /* However if the typedef cross references to an opaque aggregate, it
1279 is safe to omit it from the symbol table. */
1281 if (has_opaque_xref (cur_fdr
, sh
))
1283 s
= new_symbol (name
);
1284 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1285 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1286 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1287 SYMBOL_TYPE (s
) = t
;
1288 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1290 /* Incomplete definitions of structs should not get a name. */
1291 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1292 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1293 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1294 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1296 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1297 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1299 /* If we are giving a name to a type such as "pointer to
1300 foo" or "function returning foo", we better not set
1301 the TYPE_NAME. If the program contains "typedef char
1302 *caddr_t;", we don't want all variables of type char
1303 * to print as caddr_t. This is not just a
1304 consequence of GDB's type management; CC and GCC (at
1305 least through version 2.4) both output variables of
1306 either type char * or caddr_t with the type
1307 refering to the stTypedef symbol for caddr_t. If a future
1308 compiler cleans this up it GDB is not ready for it
1309 yet, but if it becomes ready we somehow need to
1310 disable this check (without breaking the PCC/GCC2.4
1315 Fortunately, this check seems not to be necessary
1316 for anything except pointers or functions. */
1319 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1323 case stFile
: /* file name */
1324 push_parse_stack ();
1325 top_stack
->blocktype
= sh
->st
;
1328 /* I`ve never seen these for C */
1330 break; /* register relocation */
1332 break; /* forwarding address */
1334 break; /* constant */
1336 complaint (&symfile_complaints
, _("unknown symbol type 0x%x"), sh
->st
);
1345 static const struct objfile_data
*basic_type_data
;
1347 static struct type
*
1348 basic_type (int bt
, struct objfile
*objfile
)
1350 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1351 struct type
**map_bt
= objfile_data (objfile
, basic_type_data
);
1359 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1360 btMax
, struct type
*);
1361 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1370 tp
= objfile_type (objfile
)->builtin_void
;
1374 tp
= init_type (TYPE_CODE_PTR
, 4, TYPE_FLAG_UNSIGNED
,
1376 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1380 tp
= init_type (TYPE_CODE_INT
, 1, 0,
1385 tp
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1386 "unsigned char", objfile
);
1390 tp
= init_type (TYPE_CODE_INT
, 2, 0,
1395 tp
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1396 "unsigned short", objfile
);
1400 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1405 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1406 "unsigned int", objfile
);
1410 tp
= init_type (TYPE_CODE_INT
, 4, 0,
1415 tp
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1416 "unsigned long", objfile
);
1420 tp
= init_type (TYPE_CODE_FLT
,
1421 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1426 tp
= init_type (TYPE_CODE_FLT
,
1427 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1432 tp
= init_type (TYPE_CODE_COMPLEX
,
1433 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1434 "complex", objfile
);
1435 TYPE_TARGET_TYPE (tp
) = basic_type (btFloat
, objfile
);
1439 tp
= init_type (TYPE_CODE_COMPLEX
,
1440 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1441 "double complex", objfile
);
1442 TYPE_TARGET_TYPE (tp
) = basic_type (btDouble
, objfile
);
1446 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1447 good? Would we be better off with TYPE_CODE_ERROR? Should
1448 TYPE_CODE_ERROR print things in hex if it knows the size? */
1449 tp
= init_type (TYPE_CODE_INT
,
1450 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1451 "fixed decimal", objfile
);
1455 tp
= init_type (TYPE_CODE_ERROR
,
1456 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
, 0,
1457 "floating decimal", objfile
);
1461 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1463 tp
= init_type (TYPE_CODE_STRING
, 1, 0,
1468 tp
= objfile_type (objfile
)->builtin_void
;
1472 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1477 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1478 "unsigned long", objfile
);
1482 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1483 "long long", objfile
);
1487 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1488 "unsigned long long", objfile
);
1492 tp
= init_type (TYPE_CODE_PTR
, 8, TYPE_FLAG_UNSIGNED
,
1494 TYPE_TARGET_TYPE (tp
) = objfile_type (objfile
)->builtin_void
;
1498 tp
= init_type (TYPE_CODE_INT
, 8, 0,
1503 tp
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1504 "unsigned int", objfile
);
1516 /* Parse the type information provided in the raw AX entries for
1517 the symbol SH. Return the bitfield size in BS, in case.
1518 We must byte-swap the AX entries before we use them; BIGEND says whether
1519 they are big-endian or little-endian (from fh->fBigendian). */
1521 static struct type
*
1522 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1523 int bigend
, char *sym_name
)
1526 struct type
*tp
= 0;
1527 enum type_code type_code
= TYPE_CODE_UNDEF
;
1529 /* Handle undefined types, they have indexNil. */
1530 if (aux_index
== indexNil
)
1531 return basic_type (btInt
, mdebugread_objfile
);
1533 /* Handle corrupt aux indices. */
1534 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1536 index_complaint (sym_name
);
1537 return basic_type (btInt
, mdebugread_objfile
);
1541 /* Use aux as a type information record, map its basic type. */
1542 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1543 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1546 /* Cannot use builtin types -- build our own. */
1550 type_code
= TYPE_CODE_STRUCT
;
1553 type_code
= TYPE_CODE_UNION
;
1556 type_code
= TYPE_CODE_ENUM
;
1559 type_code
= TYPE_CODE_RANGE
;
1562 type_code
= TYPE_CODE_SET
;
1565 /* alpha cc -migrate uses this for typedefs. The true type will
1566 be obtained by crossreferencing below. */
1567 type_code
= TYPE_CODE_ERROR
;
1570 /* alpha cc uses this for typedefs. The true type will be
1571 obtained by crossreferencing below. */
1572 type_code
= TYPE_CODE_ERROR
;
1575 basic_type_complaint (t
->bt
, sym_name
);
1576 return basic_type (btInt
, mdebugread_objfile
);
1580 /* Move on to next aux. */
1585 int width
= AUX_GET_WIDTH (bigend
, ax
);
1587 /* Inhibit core dumps if TIR is corrupted. */
1588 if (bs
== (int *) NULL
)
1590 /* Alpha cc -migrate encodes char and unsigned char types
1591 as short and unsigned short types with a field width of 8.
1592 Enum types also have a field width which we ignore for now. */
1593 if (t
->bt
== btShort
&& width
== 8)
1594 tp
= basic_type (btChar
, mdebugread_objfile
);
1595 else if (t
->bt
== btUShort
&& width
== 8)
1596 tp
= basic_type (btUChar
, mdebugread_objfile
);
1597 else if (t
->bt
== btEnum
)
1600 complaint (&symfile_complaints
,
1601 _("can't handle TIR fBitfield for %s"),
1609 /* A btIndirect entry cross references to an aux entry containing
1611 if (t
->bt
== btIndirect
)
1618 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1620 if (rn
->rfd
== 0xfff)
1622 rf
= AUX_GET_ISYM (bigend
, ax
);
1630 complaint (&symfile_complaints
,
1631 _("unable to cross ref btIndirect for %s"), sym_name
);
1632 return basic_type (btInt
, mdebugread_objfile
);
1634 xref_fh
= get_rfd (fd
, rf
);
1635 xref_fd
= xref_fh
- debug_info
->fdr
;
1636 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1637 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1640 /* All these types really point to some (common) MIPS type
1641 definition, and only the type-qualifiers fully identify
1642 them. We'll make the same effort at sharing. */
1643 if (t
->bt
== btStruct
||
1647 /* btSet (I think) implies that the name is a tag name, not a typedef
1648 name. This apparently is a MIPS extension for C sets. */
1653 /* Try to cross reference this type, build new type on failure. */
1654 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1655 if (tp
== (struct type
*) NULL
)
1656 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1658 /* DEC c89 produces cross references to qualified aggregate types,
1659 dereference them. */
1660 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1661 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1662 tp
= TYPE_TARGET_TYPE (tp
);
1664 /* Make sure that TYPE_CODE(tp) has an expected type code.
1665 Any type may be returned from cross_ref if file indirect entries
1667 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1668 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1669 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1671 unexpected_type_code_complaint (sym_name
);
1675 /* Usually, TYPE_CODE(tp) is already type_code. The main
1676 exception is if we guessed wrong re struct/union/enum.
1677 But for struct vs. union a wrong guess is harmless, so
1678 don't complain(). */
1679 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1680 && type_code
!= TYPE_CODE_ENUM
)
1681 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1682 && type_code
== TYPE_CODE_ENUM
))
1684 bad_tag_guess_complaint (sym_name
);
1687 if (TYPE_CODE (tp
) != type_code
)
1689 TYPE_CODE (tp
) = type_code
;
1692 /* Do not set the tag name if it is a compiler generated tag name
1693 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1694 if (name
[0] == '.' || name
[0] == '\0')
1695 TYPE_TAG_NAME (tp
) = NULL
;
1696 else if (TYPE_TAG_NAME (tp
) == NULL
1697 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1700 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1701 name
, strlen (name
)));
1705 /* All these types really point to some (common) MIPS type
1706 definition, and only the type-qualifiers fully identify
1707 them. We'll make the same effort at sharing.
1708 FIXME: We are not doing any guessing on range types. */
1709 if (t
->bt
== btRange
)
1713 /* Try to cross reference this type, build new type on failure. */
1714 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1715 if (tp
== (struct type
*) NULL
)
1716 tp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
1718 /* Make sure that TYPE_CODE(tp) has an expected type code.
1719 Any type may be returned from cross_ref if file indirect entries
1721 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1723 unexpected_type_code_complaint (sym_name
);
1727 /* Usually, TYPE_CODE(tp) is already type_code. The main
1728 exception is if we guessed wrong re struct/union/enum. */
1729 if (TYPE_CODE (tp
) != type_code
)
1731 bad_tag_guess_complaint (sym_name
);
1732 TYPE_CODE (tp
) = type_code
;
1734 if (TYPE_NAME (tp
) == NULL
1735 || strcmp (TYPE_NAME (tp
), name
) != 0)
1738 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1739 name
, strlen (name
)));
1742 if (t
->bt
== btTypedef
)
1746 /* Try to cross reference this type, it should succeed. */
1747 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1748 if (tp
== (struct type
*) NULL
)
1750 complaint (&symfile_complaints
,
1751 _("unable to cross ref btTypedef for %s"), sym_name
);
1752 tp
= basic_type (btInt
, mdebugread_objfile
);
1756 /* Deal with range types. */
1757 if (t
->bt
== btRange
)
1759 TYPE_NFIELDS (tp
) = 0;
1760 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1761 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1762 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1764 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1768 /* Parse all the type qualifiers now. If there are more
1769 than 6 the game will continue in the next aux. */
1773 #define PARSE_TQ(tq) \
1774 if (t->tq != tqNil) \
1775 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1787 /* mips cc 2.x and gcc never put out continued aux entries. */
1791 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1795 /* Complain for illegal continuations due to corrupt aux entries. */
1797 complaint (&symfile_complaints
,
1798 _("illegal TIR continued for %s"), sym_name
);
1803 /* Make up a complex type from a basic one. Type is passed by
1804 reference in TPP and side-effected as necessary. The type
1805 qualifier TQ says how to handle the aux symbols at AX for
1806 the symbol SX we are currently analyzing. BIGEND says whether
1807 aux symbols are big-endian or little-endian.
1808 Returns the number of aux symbols we parsed. */
1811 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1817 /* Used in array processing. */
1828 t
= lookup_pointer_type (*tpp
);
1833 t
= lookup_function_type (*tpp
);
1840 /* Determine and record the domain type (type of index). */
1841 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1847 rf
= AUX_GET_ISYM (bigend
, ax
);
1850 fh
= get_rfd (fd
, rf
);
1852 indx
= parse_type (fh
- debug_info
->fdr
,
1853 debug_info
->external_aux
+ fh
->iauxBase
,
1854 id
, (int *) NULL
, bigend
, sym_name
);
1856 /* The bounds type should be an integer type, but might be anything
1857 else due to corrupt aux entries. */
1858 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1860 complaint (&symfile_complaints
,
1861 _("illegal array index type for %s, assuming int"),
1863 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1866 /* Get the bounds, and create the array type. */
1868 lower
= AUX_GET_DNLOW (bigend
, ax
);
1870 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1872 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1874 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1877 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1879 /* We used to fill in the supplied array element bitsize
1880 here if the TYPE_LENGTH of the target type was zero.
1881 This happens for a `pointer to an array of anonymous structs',
1882 but in this case the array element bitsize is also zero,
1883 so nothing is gained.
1884 And we used to check the TYPE_LENGTH of the target type against
1885 the supplied array element bitsize.
1886 gcc causes a mismatch for `pointer to array of object',
1887 since the sdb directives it uses do not have a way of
1888 specifying the bitsize, but it does no harm (the
1889 TYPE_LENGTH should be correct) and we should be able to
1890 ignore the erroneous bitsize from the auxiliary entry safely.
1891 dbx seems to ignore it too. */
1893 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1894 if (TYPE_LENGTH (*tpp
) == 0)
1895 TYPE_TARGET_STUB (t
) = 1;
1901 /* Volatile -- currently ignored */
1905 /* Const -- currently ignored */
1909 complaint (&symfile_complaints
, _("unknown type qualifier 0x%x"), tq
);
1915 /* Parse a procedure descriptor record PR. Note that the procedure is
1916 parsed _after_ the local symbols, now we just insert the extra
1917 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1918 already been placed in the procedure's main block. Note also that
1919 images that have been partially stripped (ld -x) have been deprived
1920 of local symbols, and we have to cope with them here. FIRST_OFF is
1921 the offset of the first procedure for this FDR; we adjust the
1922 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1923 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1924 in question, or NULL to use top_stack->cur_block. */
1927 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1928 struct partial_symtab
*pst
)
1930 struct symbol
*s
, *i
;
1931 const struct block
*b
;
1934 /* Simple rule to find files linked "-x". */
1935 if (cur_fdr
->rss
== -1)
1939 /* Static procedure at address pr->adr. Sigh. */
1940 /* FIXME-32x64. assuming pr->adr fits in long. */
1941 complaint (&symfile_complaints
,
1942 _("can't handle PDR for static proc at 0x%lx"),
1943 (unsigned long) pr
->adr
);
1951 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1952 ((char *) debug_info
->external_ext
1954 * debug_swap
->external_ext_size
)),
1956 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1964 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1965 ((char *) debug_info
->external_sym
1966 + ((cur_fdr
->isymBase
+ pr
->isym
)
1967 * debug_swap
->external_sym_size
)),
1969 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1972 if (search_symtab
!= NULL
)
1975 /* This loses both in the case mentioned (want a static, find a global),
1976 but also if we are looking up a non-mangled name which happens to
1977 match the name of a mangled function. */
1978 /* We have to save the cur_fdr across the call to lookup_symbol.
1979 If the pdr is for a static function and if a global function with
1980 the same name exists, lookup_symbol will eventually read in the symtab
1981 for the global function and clobber cur_fdr. */
1982 FDR
*save_cur_fdr
= cur_fdr
;
1984 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1985 cur_fdr
= save_cur_fdr
;
1989 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
1996 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1997 VAR_DOMAIN
, LOC_BLOCK
);
2001 b
= SYMBOL_BLOCK_VALUE (s
);
2005 complaint (&symfile_complaints
, _("PDR for %s, but no symbol"), sh_name
);
2009 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2010 s
= new_symbol (sh_name
);
2011 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2012 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2013 /* Donno its type, hope int is ok. */
2015 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2016 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2017 /* Won't have symbols for this one. */
2019 SYMBOL_BLOCK_VALUE (s
) = b
;
2020 BLOCK_FUNCTION (b
) = s
;
2021 BLOCK_START (b
) = pr
->adr
;
2022 /* BOUND used to be the end of procedure's text, but the
2023 argument is no longer passed in. */
2024 BLOCK_END (b
) = bound
;
2025 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2026 add_block (b
, top_stack
->cur_st
);
2030 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2034 struct mdebug_extra_func_info
*e
;
2036 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2039 /* GDB expects the absolute function start address for the
2040 procedure descriptor in e->pdr.adr.
2041 As the address in the procedure descriptor is usually relative,
2042 we would have to relocate e->pdr.adr with cur_fdr->adr and
2043 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2044 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2045 in shared libraries on some systems, and on other systems
2046 e->pdr.adr is sometimes offset by a bogus value.
2047 To work around these problems, we replace e->pdr.adr with
2048 the start address of the function. */
2049 e
->pdr
.adr
= BLOCK_START (b
);
2052 /* It would be reasonable that functions that have been compiled
2053 without debugging info have a btNil type for their return value,
2054 and functions that are void and are compiled with debugging info
2056 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2057 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2059 The glevel field in cur_fdr could be used to determine the presence
2060 of debugging info, but GCC doesn't always pass the -g switch settings
2061 to the assembler and GAS doesn't set the glevel field from the -g switch
2063 To work around these problems, the return value type of a TYPE_CODE_VOID
2064 function is adjusted accordingly if no debugging info was found in the
2065 compilation unit. */
2067 if (processing_gcc_compilation
== 0
2068 && found_ecoff_debugging_info
== 0
2069 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2070 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2073 /* Parse the external symbol ES. Just call parse_symbol() after
2074 making sure we know where the aux are for it.
2075 BIGEND says whether aux entries are big-endian or little-endian.
2077 This routine clobbers top_stack->cur_block and ->cur_st. */
2079 static void parse_external (EXTR
*, int, struct section_offsets
*,
2083 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2084 struct objfile
*objfile
)
2088 if (es
->ifd
!= ifdNil
)
2091 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2092 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2096 cur_fdr
= debug_info
->fdr
;
2100 /* Reading .o files */
2101 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2104 switch (es
->asym
.st
)
2107 /* These are generated for static symbols in .o files,
2128 /* FIXME: Turn this into a complaint? */
2130 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2131 what
, debug_info
->ssext
+ es
->asym
.iss
,
2132 fdr_name (cur_fdr
));
2136 switch (es
->asym
.st
)
2140 /* There is no need to parse the external procedure symbols.
2141 If they are from objects compiled without -g, their index will
2142 be indexNil, and the symbol definition from the minimal symbol
2143 is preferrable (yielding a function returning int instead of int).
2144 If the index points to a local procedure symbol, the local
2145 symbol already provides the correct type.
2146 Note that the index of the external procedure symbol points
2147 to the local procedure symbol in the local symbol table, and
2148 _not_ to the auxiliary symbol info. */
2152 /* Global common symbols are resolved by the runtime loader,
2154 if (SC_IS_COMMON (es
->asym
.sc
))
2157 /* Note that the case of a symbol with indexNil must be handled
2158 anyways by parse_symbol(). */
2159 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2160 bigend
, section_offsets
, objfile
);
2167 /* Parse the line number info for file descriptor FH into
2168 GDB's linetable LT. MIPS' encoding requires a little bit
2169 of magic to get things out. Note also that MIPS' line
2170 numbers can go back and forth, apparently we can live
2171 with that and do not need to reorder our linetables. */
2173 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2174 struct partial_symtab
*, CORE_ADDR
);
2177 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2178 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2180 unsigned char *base
;
2182 int delta
, count
, lineno
= 0;
2184 if (fh
->cbLine
== 0)
2187 /* Scan by procedure descriptors. */
2189 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2193 unsigned char *halt
;
2195 /* No code for this one. */
2196 if (pr
->iline
== ilineNil
||
2197 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2200 /* Determine start and end address of compressed line bytes for
2202 base
= debug_info
->line
+ fh
->cbLineOffset
;
2203 if (j
!= (fh
->cpd
- 1))
2204 halt
= base
+ pr
[1].cbLineOffset
;
2206 halt
= base
+ fh
->cbLine
;
2207 base
+= pr
->cbLineOffset
;
2209 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2211 l
= adr
>> 2; /* in words */
2212 for (lineno
= pr
->lnLow
; base
< halt
;)
2214 count
= *base
& 0x0f;
2215 delta
= *base
++ >> 4;
2220 delta
= (base
[0] << 8) | base
[1];
2221 if (delta
>= 0x8000)
2225 lineno
+= delta
; /* first delta is 0 */
2227 /* Complain if the line table overflows. Could happen
2228 with corrupt binaries. */
2229 if (lt
->nitems
>= maxlines
)
2231 complaint (&symfile_complaints
,
2232 _("guessed size of linetable for %s incorrectly"),
2236 k
= add_line (lt
, lineno
, l
, k
);
2243 function_outside_compilation_unit_complaint (const char *arg1
)
2245 complaint (&symfile_complaints
,
2246 _("function `%s' appears to be defined "
2247 "outside of all compilation units"),
2251 /* Use the STORAGE_CLASS to compute which section the given symbol
2252 belongs to, and then records this new minimal symbol. */
2255 record_minimal_symbol (const char *name
, const CORE_ADDR address
,
2256 enum minimal_symbol_type ms_type
, int storage_class
,
2257 struct objfile
*objfile
)
2261 switch (storage_class
)
2264 section
= SECT_OFF_TEXT (objfile
);
2267 section
= SECT_OFF_DATA (objfile
);
2270 section
= SECT_OFF_BSS (objfile
);
2273 section
= get_section_index (objfile
, ".sdata");
2276 section
= get_section_index (objfile
, ".sbss");
2279 section
= get_section_index (objfile
, ".rdata");
2282 section
= get_section_index (objfile
, ".init");
2285 section
= get_section_index (objfile
, ".xdata");
2288 section
= get_section_index (objfile
, ".pdata");
2291 section
= get_section_index (objfile
, ".fini");
2294 section
= get_section_index (objfile
, ".rconst");
2298 section
= get_section_index (objfile
, ".tlsdata");
2303 section
= get_section_index (objfile
, ".tlsbss");
2307 /* This kind of symbol is not associated to a section. */
2311 prim_record_minimal_symbol_and_info (name
, address
, ms_type
,
2315 /* Master parsing procedure for first-pass reading of file symbols
2316 into a partial_symtab. */
2319 parse_partial_symbols (struct objfile
*objfile
)
2321 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2322 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2323 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2324 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2325 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2326 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2327 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2329 HDRR
*hdr
= &debug_info
->symbolic_header
;
2330 /* Running pointers */
2338 struct partial_symtab
*pst
;
2339 int textlow_not_set
= 1;
2340 int past_first_source_file
= 0;
2342 /* List of current psymtab's include files. */
2343 const char **psymtab_include_list
;
2344 int includes_allocated
;
2347 struct pst_map
*fdr_to_pst
;
2348 /* Index within current psymtab dependency list. */
2349 struct partial_symtab
**dependency_list
;
2350 int dependencies_used
, dependencies_allocated
;
2351 struct cleanup
*old_chain
;
2353 enum language prev_language
;
2354 asection
*text_sect
;
2355 int relocatable
= 0;
2357 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2358 the shared libraries are prelinked at a high memory address.
2359 We have to adjust the start address of the object file for this case,
2360 by setting it to the start address of the first procedure in the file.
2361 But we should do no adjustments if we are debugging a .o file, where
2362 the text section (and fh->adr) really starts at zero. */
2363 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2364 if (text_sect
!= NULL
2365 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2368 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2369 sizeof (EXTR
) * hdr
->iextMax
);
2371 includes_allocated
= 30;
2373 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2374 sizeof (const char *));
2375 next_symbol_text_func
= mdebug_next_symbol_text
;
2377 dependencies_allocated
= 30;
2378 dependencies_used
= 0;
2380 (struct partial_symtab
**) alloca (dependencies_allocated
*
2381 sizeof (struct partial_symtab
*));
2383 set_last_source_file (NULL
);
2388 * Only parse the Local and External symbols, and the Relative FDR.
2389 * Fixup enough of the loader symtab to be able to use it.
2390 * Allocate space only for the file's portions we need to
2395 max_glevel
= MIN_GLEVEL
;
2397 /* Allocate the map FDR -> PST.
2398 Minor hack: -O3 images might claim some global data belongs
2399 to FDR -1. We`ll go along with that. */
2400 fdr_to_pst
= XCNEWVEC (struct pst_map
, hdr
->ifdMax
+ 1);
2401 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2404 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2406 fdr_to_pst
[-1].pst
= pst
;
2410 /* Allocate the global pending list. */
2412 ((struct mdebug_pending
**)
2413 obstack_alloc (&objfile
->objfile_obstack
,
2414 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2415 memset (pending_list
, 0,
2416 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2418 /* Pass 0 over external syms: swap them in. */
2419 ext_block
= XNEWVEC (EXTR
, hdr
->iextMax
);
2420 make_cleanup (xfree
, ext_block
);
2422 ext_out
= (char *) debug_info
->external_ext
;
2423 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2425 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2426 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2428 /* Pass 1 over external syms: Presize and partition the list. */
2430 ext_in_end
= ext_in
+ hdr
->iextMax
;
2431 for (; ext_in
< ext_in_end
; ext_in
++)
2433 /* See calls to complain below. */
2434 if (ext_in
->ifd
>= -1
2435 && ext_in
->ifd
< hdr
->ifdMax
2436 && ext_in
->asym
.iss
>= 0
2437 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2438 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2441 /* Pass 1.5 over files: partition out global symbol space. */
2443 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2445 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2446 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2447 fdr_to_pst
[f_idx
].n_globals
= 0;
2452 For ECOFF in ELF, we skip the creation of the minimal symbols.
2453 The ECOFF symbols should be a subset of the Elf symbols, and the
2454 section information of the elf symbols will be more accurate.
2455 FIXME! What about Irix 5's native linker?
2457 By default, Elf sections which don't exist in ECOFF
2458 get put in ECOFF's absolute section by the gnu linker.
2459 Since absolute sections don't get relocated, we
2460 end up calculating an address different from that of
2461 the symbol's minimal symbol (created earlier from the
2464 To fix this, either :
2465 1) don't create the duplicate symbol
2466 (assumes ECOFF symtab is a subset of the ELF symtab;
2467 assumes no side-effects result from ignoring ECOFF symbol)
2468 2) create it, only if lookup for existing symbol in ELF's minimal
2471 assumes no side-effects result from ignoring ECOFF symbol)
2472 3) create it, but lookup ELF's minimal symbol and use it's section
2473 during relocation, then modify "uniqify" phase to merge and
2474 eliminate the duplicate symbol
2475 (highly inefficient)
2477 I've implemented #1 here...
2478 Skip the creation of the minimal symbols based on the ECOFF
2481 /* Pass 2 over external syms: fill in external symbols. */
2483 ext_in_end
= ext_in
+ hdr
->iextMax
;
2484 for (; ext_in
< ext_in_end
; ext_in
++)
2486 enum minimal_symbol_type ms_type
= mst_text
;
2487 CORE_ADDR svalue
= ext_in
->asym
.value
;
2489 /* The Irix 5 native tools seem to sometimes generate bogus
2490 external symbols. */
2491 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2493 complaint (&symfile_complaints
,
2494 _("bad ifd for external symbol: %d (max %ld)"),
2495 ext_in
->ifd
, hdr
->ifdMax
);
2498 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2500 complaint (&symfile_complaints
,
2501 _("bad iss for external symbol: %ld (max %ld)"),
2502 ext_in
->asym
.iss
, hdr
->issExtMax
);
2506 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2507 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2510 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2514 /* Pass 3 over files, over local syms: fill in static symbols. */
2515 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2517 /* Process ECOFF Symbol Types and Storage Classes. */
2518 switch (ext_in
->asym
.st
)
2521 /* Beginnning of Procedure */
2524 /* Load time only static procs */
2525 ms_type
= mst_file_text
;
2528 /* External symbol */
2529 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2531 /* The value of a common symbol is its size, not its address.
2535 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2539 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2543 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2553 /* On certain platforms, some extra label symbols can be
2554 generated by the linker. One possible usage for this kind
2555 of symbols is to represent the address of the begining of a
2556 given section. For instance, on Tru64 5.1, the address of
2557 the _ftext label is the start address of the .text section.
2559 The storage class of these symbols is usually directly
2560 related to the section to which the symbol refers. For
2561 instance, on Tru64 5.1, the storage class for the _fdata
2562 label is scData, refering to the .data section.
2564 It is actually possible that the section associated to the
2565 storage class of the label does not exist. On True64 5.1
2566 for instance, the libm.so shared library does not contain
2567 any .data section, although it contains a _fpdata label
2568 which storage class is scData... Since these symbols are
2569 usually useless for the debugger user anyway, we just
2570 discard these symbols. */
2572 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2574 if (objfile
->sect_index_text
== -1)
2577 ms_type
= mst_file_text
;
2579 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2581 if (objfile
->sect_index_data
== -1)
2584 ms_type
= mst_file_data
;
2586 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2588 if (objfile
->sect_index_bss
== -1)
2591 ms_type
= mst_file_bss
;
2593 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2595 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2597 if (sbss_sect_index
== -1)
2600 ms_type
= mst_file_bss
;
2607 /* The alpha has the section start addresses in stLocal symbols
2608 whose name starts with a `.'. Skip those but complain for all
2609 other stLocal symbols.
2610 Irix6 puts the section start addresses in stNil symbols, skip
2616 ms_type
= mst_unknown
;
2617 unknown_ext_complaint (name
);
2619 if (!ECOFF_IN_ELF (cur_bfd
))
2620 record_minimal_symbol (name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2624 /* Pass 3 over files, over local syms: fill in static symbols. */
2625 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2627 struct partial_symtab
*save_pst
;
2631 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2635 fdr_to_pst
[f_idx
].pst
= NULL
;
2639 /* Determine the start address for this object file from the
2640 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2644 if (relocatable
|| textlow
!= 0)
2645 textlow
+= ANOFFSET (objfile
->section_offsets
,
2646 SECT_OFF_TEXT (objfile
));
2650 pst
= start_psymtab_common (objfile
,
2653 objfile
->global_psymbols
.next
,
2654 objfile
->static_psymbols
.next
);
2655 pst
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
2656 sizeof (struct symloc
));
2657 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2660 FDR_IDX (pst
) = f_idx
;
2661 CUR_BFD (pst
) = cur_bfd
;
2662 DEBUG_SWAP (pst
) = debug_swap
;
2663 DEBUG_INFO (pst
) = debug_info
;
2664 PENDING_LIST (pst
) = pending_list
;
2666 /* The way to turn this into a symtab is to call... */
2667 pst
->read_symtab
= mdebug_read_symtab
;
2669 /* Set up language for the pst.
2670 The language from the FDR is used if it is unambigious (e.g. cfront
2671 with native cc and g++ will set the language to C).
2672 Otherwise we have to deduce the language from the filename.
2673 Native ecoff has every header file in a separate FDR, so
2674 deduce_language_from_filename will return language_unknown for
2675 a header file, which is not what we want.
2676 But the FDRs for the header files are after the FDR for the source
2677 file, so we can assign the language of the source file to the
2678 following header files. Then we save the language in the private
2679 pst data so that we can reuse it when building symtabs. */
2680 prev_language
= psymtab_language
;
2684 case langCplusplusV2
:
2685 psymtab_language
= language_cplus
;
2688 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2691 if (psymtab_language
== language_unknown
)
2692 psymtab_language
= prev_language
;
2693 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2695 pst
->texthigh
= pst
->textlow
;
2697 /* For stabs-in-ecoff files, the second symbol must be @stab.
2698 This symbol is emitted by mips-tfile to signal that the
2699 current object file uses encapsulated stabs instead of mips
2700 ecoff for local symbols. (It is the second symbol because
2701 the first symbol is the stFile used to signal the start of a
2703 processing_gcc_compilation
= 0;
2706 (*swap_sym_in
) (cur_bfd
,
2707 ((char *) debug_info
->external_sym
2708 + (fh
->isymBase
+ 1) * external_sym_size
),
2710 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2712 processing_gcc_compilation
= 2;
2715 if (processing_gcc_compilation
!= 0)
2717 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2720 const char *namestring
;
2722 (*swap_sym_in
) (cur_bfd
,
2723 (((char *) debug_info
->external_sym
)
2724 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2726 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2727 if (!ECOFF_IS_STAB (&sh
))
2729 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2734 if (sh
.st
== stStaticProc
)
2736 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2737 record_minimal_symbol (namestring
, sh
.value
,
2738 mst_file_text
, sh
.sc
,
2741 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2742 SECT_OFF_TEXT (objfile
));
2743 procaddr
= sh
.value
;
2745 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2746 (debug_info
->external_aux
2749 (*swap_sym_in
) (cur_bfd
,
2750 ((char *) debug_info
->external_sym
2751 + ((fh
->isymBase
+ isym
- 1)
2752 * external_sym_size
)),
2756 CORE_ADDR high
= procaddr
+ sh
.value
;
2758 /* Kludge for Irix 5.2 zero fh->adr. */
2760 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2761 pst
->textlow
= procaddr
;
2762 if (high
> pst
->texthigh
)
2763 pst
->texthigh
= high
;
2766 else if (sh
.st
== stStatic
)
2781 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2782 record_minimal_symbol (namestring
, sh
.value
,
2783 mst_file_data
, sh
.sc
,
2785 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2786 SECT_OFF_DATA (objfile
));
2790 /* FIXME! Shouldn't this use cases for bss,
2791 then have the default be abs? */
2792 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2793 record_minimal_symbol (namestring
, sh
.value
,
2794 mst_file_bss
, sh
.sc
,
2796 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2797 SECT_OFF_BSS (objfile
));
2803 /* Handle stabs continuation. */
2805 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2806 int len
= strlen (stabstring
);
2808 while (stabstring
[len
- 1] == '\\')
2811 char *stabstring1
= stabstring
;
2815 /* Ignore continuation char from 1st string. */
2818 /* Read next stabstring. */
2820 (*swap_sym_in
) (cur_bfd
,
2821 (((char *) debug_info
->external_sym
)
2822 + (fh
->isymBase
+ cur_sdx
)
2823 * external_sym_size
),
2825 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2826 len2
= strlen (stabstring2
);
2828 /* Concatinate stabstring2 with stabstring1. */
2830 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2832 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2835 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2836 strcpy (stabstring
, stabstring1
);
2838 strcpy (stabstring
+ len
, stabstring2
);
2846 /* Standard, external, non-debugger, symbols. */
2848 case N_TEXT
| N_EXT
:
2849 case N_NBTEXT
| N_EXT
:
2850 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2851 SECT_OFF_TEXT (objfile
));
2854 case N_DATA
| N_EXT
:
2855 case N_NBDATA
| N_EXT
:
2856 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2857 SECT_OFF_DATA (objfile
));
2862 case N_NBBSS
| N_EXT
:
2863 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2864 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2865 SECT_OFF_BSS (objfile
));
2872 /* Standard, local, non-debugger, symbols. */
2876 /* We need to be able to deal with both N_FN or
2877 N_TEXT, because we have no way of knowing
2878 whether the sys-supplied ld or GNU ld was used
2879 to make the executable. Sequents throw in
2880 another wrinkle -- they renumbered N_FN. */
2888 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2889 SECT_OFF_DATA (objfile
));
2892 case N_UNDF
| N_EXT
:
2893 continue; /* Just undefined, not COMMON. */
2898 /* Lots of symbol types we can just ignore. */
2905 /* Keep going . . . */
2908 * Special symbol types for GNU
2911 case N_INDR
| N_EXT
:
2913 case N_SETA
| N_EXT
:
2915 case N_SETT
| N_EXT
:
2917 case N_SETD
| N_EXT
:
2919 case N_SETB
| N_EXT
:
2930 static int prev_so_symnum
= -10;
2931 static int first_so_symnum
;
2933 int prev_textlow_not_set
;
2935 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
,
2936 SECT_OFF_TEXT (objfile
));
2938 prev_textlow_not_set
= textlow_not_set
;
2940 /* A zero value is probably an indication for the
2941 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2942 for zero, so don't relocate it. */
2945 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2947 textlow_not_set
= 1;
2951 textlow_not_set
= 0;
2953 past_first_source_file
= 1;
2955 if (prev_so_symnum
!= symnum
- 1)
2956 { /* Here if prev stab wasn't N_SO. */
2957 first_so_symnum
= symnum
;
2961 pst
= (struct partial_symtab
*) 0;
2963 dependencies_used
= 0;
2967 prev_so_symnum
= symnum
;
2969 /* End the current partial symtab and start a
2972 /* SET_NAMESTRING ();*/
2973 namestring
= stabstring
;
2975 /* Null name means end of .o file. Don't start a new
2977 if (*namestring
== '\000')
2980 /* Some compilers (including gcc) emit a pair of
2981 initial N_SOs. The first one is a directory name;
2982 the second the file name. If pst exists, is
2983 empty, and has a filename ending in '/', we assume
2984 the previous N_SO was a directory name. */
2985 p
= lbasename (namestring
);
2986 if (p
!= namestring
&& *p
== '\000')
2987 continue; /* Simply ignore directory
2990 /* Some other compilers (C++ ones in particular) emit
2991 useless SOs for non-existant .c files. We ignore
2992 all subsequent SOs that immediately follow the
3005 enum language tmp_language
;
3007 /* Mark down an include file in the current psymtab. */
3009 /* SET_NAMESTRING (); */
3010 namestring
= stabstring
;
3013 = deduce_language_from_filename (namestring
);
3015 /* Only change the psymtab's language if we've
3016 learned something useful (eg. tmp_language is not
3017 language_unknown). In addition, to match what
3018 start_subfile does, never change from C++ to
3020 if (tmp_language
!= language_unknown
3021 && (tmp_language
!= language_c
3022 || psymtab_language
!= language_cplus
))
3023 psymtab_language
= tmp_language
;
3025 /* In C++, one may expect the same filename to come
3026 round many times, when code is coming alternately
3027 from the main file and from inline functions in
3028 other files. So I check to see if this is a file
3029 we've seen before -- either the main source file,
3030 or a previously included file.
3032 This seems to be a lot of time to be spending on
3033 N_SOL, but things like "break c-exp.y:435" need to
3034 work (I suppose the psymtab_include_list could be
3035 hashed or put in a binary tree, if profiling shows
3036 this is a major hog). */
3037 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3043 for (i
= 0; i
< includes_used
; i
++)
3044 if (filename_cmp (namestring
,
3045 psymtab_include_list
[i
]) == 0)
3054 psymtab_include_list
[includes_used
++] = namestring
;
3055 if (includes_used
>= includes_allocated
)
3057 const char **orig
= psymtab_include_list
;
3059 psymtab_include_list
= (const char **)
3060 alloca ((includes_allocated
*= 2) *
3061 sizeof (const char *));
3062 memcpy (psymtab_include_list
, orig
,
3063 includes_used
* sizeof (const char *));
3067 case N_LSYM
: /* Typedef or automatic variable. */
3068 case N_STSYM
: /* Data seg var -- static */
3069 case N_LCSYM
: /* BSS " */
3070 case N_ROSYM
: /* Read-only data seg var -- static. */
3071 case N_NBSTS
: /* Gould nobase. */
3072 case N_NBLCS
: /* symbols. */
3074 case N_GSYM
: /* Global (extern) variable; can be
3075 data or bss (sigh FIXME). */
3077 /* Following may probably be ignored; I'll leave them here
3078 for now (until I do Pascal and Modula 2 extensions). */
3080 case N_PC
: /* I may or may not need this; I
3082 case N_M2C
: /* I suspect that I can ignore this
3084 case N_SCOPE
: /* Same. */
3086 /* SET_NAMESTRING (); */
3087 namestring
= stabstring
;
3088 p
= (char *) strchr (namestring
, ':');
3090 continue; /* Not a debugging symbol. */
3094 /* Main processing section for debugging symbols which
3095 the initial read through the symbol tables needs to
3096 worry about. If we reach this point, the symbol
3097 which we are considering is definitely one we are
3098 interested in. p must also contain the (valid)
3099 index into the namestring which indicates the
3100 debugging type symbol. */
3105 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3106 SECT_OFF_DATA (objfile
));
3108 if (gdbarch_static_transform_name_p (gdbarch
))
3109 namestring
= gdbarch_static_transform_name
3110 (gdbarch
, namestring
);
3112 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3113 VAR_DOMAIN
, LOC_STATIC
,
3114 &objfile
->static_psymbols
,
3116 psymtab_language
, objfile
);
3119 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3120 SECT_OFF_DATA (objfile
));
3121 /* The addresses in these entries are reported
3122 to be wrong. See the code that reads 'G's
3124 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3125 VAR_DOMAIN
, LOC_STATIC
,
3126 &objfile
->global_psymbols
,
3128 psymtab_language
, objfile
);
3132 /* When a 'T' entry is defining an anonymous enum, it
3133 may have a name which is the empty string, or a
3134 single space. Since they're not really defining a
3135 symbol, those shouldn't go in the partial symbol
3136 table. We do pick up the elements of such enums at
3137 'check_enum:', below. */
3138 if (p
>= namestring
+ 2
3139 || (p
== namestring
+ 1
3140 && namestring
[0] != ' '))
3142 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3143 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3144 &objfile
->static_psymbols
,
3145 0, psymtab_language
, objfile
);
3148 /* Also a typedef with the same name. */
3149 add_psymbol_to_list (namestring
,
3151 VAR_DOMAIN
, LOC_TYPEDEF
,
3152 &objfile
->static_psymbols
,
3153 0, psymtab_language
,
3160 if (p
!= namestring
) /* a name is there, not
3163 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3164 VAR_DOMAIN
, LOC_TYPEDEF
,
3165 &objfile
->static_psymbols
,
3166 0, psymtab_language
, objfile
);
3169 /* If this is an enumerated type, we need to add
3170 all the enum constants to the partial symbol
3171 table. This does not cover enums without names,
3172 e.g. "enum {a, b} c;" in C, but fortunately
3173 those are rare. There is no way for GDB to find
3174 those from the enum type without spending too
3175 much time on it. Thus to solve this problem,
3176 the compiler needs to put out the enum in a
3177 nameless type. GCC2 does this. */
3179 /* We are looking for something of the form
3180 <name> ":" ("t" | "T") [<number> "="] "e"
3181 {<constant> ":" <value> ","} ";". */
3183 /* Skip over the colon and the 't' or 'T'. */
3185 /* This type may be given a number. Also, numbers
3186 can come in pairs like (0,26). Skip over it. */
3187 while ((*p
>= '0' && *p
<= '9')
3188 || *p
== '(' || *p
== ',' || *p
== ')'
3194 /* The aix4 compiler emits extra crud before
3198 /* Skip over the type (?). */
3202 /* Skip over the colon. */
3206 /* We have found an enumerated type. */
3207 /* According to comments in read_enum_type
3208 a comma could end it instead of a semicolon.
3209 I don't know where that happens.
3211 while (*p
&& *p
!= ';' && *p
!= ',')
3215 /* Check for and handle cretinous dbx
3216 symbol name continuation! */
3217 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3218 p
= next_symbol_text (objfile
);
3220 /* Point to the character after the name
3221 of the enum constant. */
3222 for (q
= p
; *q
&& *q
!= ':'; q
++)
3224 /* Note that the value doesn't matter for
3225 enum constants in psymtabs, just in
3227 add_psymbol_to_list (p
, q
- p
, 1,
3228 VAR_DOMAIN
, LOC_CONST
,
3229 &objfile
->static_psymbols
,
3230 0, psymtab_language
,
3232 /* Point past the name. */
3234 /* Skip over the value. */
3235 while (*p
&& *p
!= ',')
3237 /* Advance past the comma. */
3244 /* Constant, e.g. from "const" in Pascal. */
3245 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3246 VAR_DOMAIN
, LOC_CONST
,
3247 &objfile
->static_psymbols
,
3248 0, psymtab_language
, objfile
);
3254 int name_len
= p
- namestring
;
3255 char *name
= (char *) xmalloc (name_len
+ 1);
3257 memcpy (name
, namestring
, name_len
);
3258 name
[name_len
] = '\0';
3259 function_outside_compilation_unit_complaint (name
);
3262 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3263 SECT_OFF_TEXT (objfile
));
3264 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3265 VAR_DOMAIN
, LOC_BLOCK
,
3266 &objfile
->static_psymbols
,
3268 psymtab_language
, objfile
);
3271 /* Global functions were ignored here, but now they
3272 are put into the global psymtab like one would
3273 expect. They're also in the minimal symbol
3278 int name_len
= p
- namestring
;
3279 char *name
= (char *) xmalloc (name_len
+ 1);
3281 memcpy (name
, namestring
, name_len
);
3282 name
[name_len
] = '\0';
3283 function_outside_compilation_unit_complaint (name
);
3286 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3287 SECT_OFF_TEXT (objfile
));
3288 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3289 VAR_DOMAIN
, LOC_BLOCK
,
3290 &objfile
->global_psymbols
,
3292 psymtab_language
, objfile
);
3295 /* Two things show up here (hopefully); static
3296 symbols of local scope (static used inside
3297 braces) or extensions of structure symbols. We
3312 case '#': /* For symbol identification (used
3317 /* It is a C++ nested symbol. We don't need to
3318 record it (I don't think); if we try to look up
3319 foo::bar::baz, then symbols for the symtab
3320 containing foo should get read in, I think. */
3321 /* Someone says sun cc puts out symbols like
3322 /foo/baz/maclib::/usr/local/bin/maclib,
3323 which would get here with a symbol type of ':'. */
3327 /* Unexpected symbol descriptor. The second and
3328 subsequent stabs of a continued stab can show up
3329 here. The question is whether they ever can
3330 mimic a normal stab--it would be nice if not,
3331 since we certainly don't want to spend the time
3332 searching to the end of every string looking for
3335 complaint (&symfile_complaints
,
3336 _("unknown symbol descriptor `%c'"), p
[1]);
3338 /* Ignore it; perhaps it is an extension that we don't
3347 /* Solaris 2 end of module, finish current partial
3348 symbol table. dbx_end_psymtab will set
3349 pst->texthigh to the proper value, which is
3350 necessary if a module compiled without
3351 debugging info follows this module. */
3353 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3355 pst
= (struct partial_symtab
*) 0;
3357 dependencies_used
= 0;
3362 if (sh
.value
> save_pst
->texthigh
)
3363 save_pst
->texthigh
= sh
.value
;
3368 case N_SSYM
: /* Claim: Structure or union
3369 element. Hopefully, I can
3371 case N_ENTRY
: /* Alternate entry point; can
3373 case N_MAIN
: /* Can definitely ignore this. */
3374 case N_CATCH
: /* These are GNU C++ extensions. */
3375 case N_EHDECL
: /* that can safely be ignored here. */
3385 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3386 case N_DEFD
: /* GNU Modula-2 */
3387 case N_ALIAS
: /* SunPro F77: alias name, ignore
3390 case N_OBJ
: /* Useless types from Solaris. */
3392 /* These symbols aren't interesting; don't worry about
3398 /* If we haven't found it yet, ignore it. It's
3399 probably some new type we don't know about yet. */
3400 complaint (&symfile_complaints
,
3401 _("unknown symbol type %s"),
3402 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3406 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3409 /* end - Handle continuation */
3414 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3417 enum address_class theclass
;
3418 CORE_ADDR minsym_value
;
3420 (*swap_sym_in
) (cur_bfd
,
3421 ((char *) debug_info
->external_sym
3422 + ((fh
->isymBase
+ cur_sdx
)
3423 * external_sym_size
)),
3426 if (ECOFF_IS_STAB (&sh
))
3432 /* Non absolute static symbols go into the minimal table. */
3433 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3434 || (sh
.index
== indexNil
3435 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3437 /* FIXME, premature? */
3442 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3444 minsym_value
= sh
.value
;
3450 /* The value of a stEnd symbol is the displacement from the
3451 corresponding start symbol value, do not relocate it. */
3453 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3454 SECT_OFF_TEXT (objfile
));
3461 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3462 SECT_OFF_DATA (objfile
));
3466 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3467 SECT_OFF_BSS (objfile
));
3478 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3480 SECT_OFF_TEXT (objfile
),
3486 /* Ignore all parameter symbol records. */
3487 if (sh
.index
>= hdr
->iauxMax
)
3489 /* Should not happen, but does when cross-compiling
3490 with the MIPS compiler. FIXME -- pull later. */
3491 index_complaint (name
);
3492 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3495 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3496 (debug_info
->external_aux
3500 if (new_sdx
<= cur_sdx
)
3502 /* This should not happen either... FIXME. */
3503 complaint (&symfile_complaints
,
3504 _("bad proc end in aux found from symbol %s"),
3506 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3509 /* For stProc symbol records, we need to check the
3510 storage class as well, as only (stProc, scText)
3511 entries represent "real" procedures - See the
3512 Compaq document titled "Object File / Symbol Table
3513 Format Specification" for more information. If the
3514 storage class is not scText, we discard the whole
3515 block of symbol records for this stProc. */
3516 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3519 /* Usually there is a local and a global stProc symbol
3520 for a function. This means that the function name
3521 has already been entered into the mimimal symbol table
3522 while processing the global symbols in pass 2 above.
3523 One notable exception is the PROGRAM name from
3524 f77 compiled executables, it is only put out as
3525 local stProc symbol, and a global MAIN__ stProc symbol
3526 points to it. It doesn't matter though, as gdb is
3527 still able to find the PROGRAM name via the partial
3528 symbol table, and the MAIN__ symbol via the minimal
3530 if (sh
.st
== stProc
)
3531 add_psymbol_to_list (name
, strlen (name
), 1,
3532 VAR_DOMAIN
, LOC_BLOCK
,
3533 &objfile
->global_psymbols
,
3534 sh
.value
, psymtab_language
, objfile
);
3536 add_psymbol_to_list (name
, strlen (name
), 1,
3537 VAR_DOMAIN
, LOC_BLOCK
,
3538 &objfile
->static_psymbols
,
3539 sh
.value
, psymtab_language
, objfile
);
3541 procaddr
= sh
.value
;
3544 (*swap_sym_in
) (cur_bfd
,
3545 ((char *) debug_info
->external_sym
3546 + ((fh
->isymBase
+ cur_sdx
- 1)
3547 * external_sym_size
)),
3552 /* Kludge for Irix 5.2 zero fh->adr. */
3554 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3555 pst
->textlow
= procaddr
;
3557 high
= procaddr
+ sh
.value
;
3558 if (high
> pst
->texthigh
)
3559 pst
->texthigh
= high
;
3562 case stStatic
: /* Variable */
3563 if (SC_IS_DATA (sh
.sc
))
3564 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3566 SECT_OFF_DATA (objfile
),
3569 prim_record_minimal_symbol_and_info (name
, minsym_value
,
3571 SECT_OFF_BSS (objfile
),
3573 theclass
= LOC_STATIC
;
3576 case stIndirect
: /* Irix5 forward declaration */
3577 /* Skip forward declarations from Irix5 cc. */
3580 case stTypedef
: /* Typedef */
3581 /* Skip typedefs for forward declarations and opaque
3582 structs from alpha and mips cc. */
3583 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3585 theclass
= LOC_TYPEDEF
;
3588 case stConstant
: /* Constant decl */
3589 theclass
= LOC_CONST
;
3595 case stBlock
: /* { }, str, un, enum */
3596 /* Do not create a partial symbol for cc unnamed aggregates
3597 and gcc empty aggregates. */
3598 if ((sh
.sc
== scInfo
3599 || SC_IS_COMMON (sh
.sc
))
3601 && sh
.index
!= cur_sdx
+ 2)
3603 add_psymbol_to_list (name
, strlen (name
), 1,
3604 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3605 &objfile
->static_psymbols
,
3606 0, psymtab_language
, objfile
);
3608 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3610 /* Skip over the block. */
3612 if (new_sdx
<= cur_sdx
)
3614 /* This happens with the Ultrix kernel. */
3615 complaint (&symfile_complaints
,
3616 _("bad aux index at block symbol %s"), name
);
3617 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3622 case stFile
: /* File headers */
3623 case stLabel
: /* Labels */
3624 case stEnd
: /* Ends of files */
3627 case stLocal
: /* Local variables */
3628 /* Normally these are skipped because we skip over
3629 all blocks we see. However, these can occur
3630 as visible symbols in a .h file that contains code. */
3634 /* Both complaints are valid: one gives symbol name,
3635 the other the offending symbol type. */
3636 complaint (&symfile_complaints
, _("unknown local symbol %s"),
3638 complaint (&symfile_complaints
, _("with type %d"), sh
.st
);
3642 /* Use this gdb symbol. */
3643 add_psymbol_to_list (name
, strlen (name
), 1,
3644 VAR_DOMAIN
, theclass
,
3645 &objfile
->static_psymbols
,
3646 sh
.value
, psymtab_language
, objfile
);
3648 cur_sdx
++; /* Go to next file symbol. */
3651 /* Now do enter the external symbols. */
3652 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3653 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3654 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3655 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3656 for (; --cur_sdx
>= 0; ext_ptr
++)
3658 enum address_class theclass
;
3663 if (ext_ptr
->ifd
!= f_idx
)
3664 internal_error (__FILE__
, __LINE__
,
3665 _("failed internal consistency check"));
3666 psh
= &ext_ptr
->asym
;
3668 /* Do not add undefined symbols to the partial symbol table. */
3669 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3672 svalue
= psh
->value
;
3677 svalue
+= ANOFFSET (objfile
->section_offsets
,
3678 SECT_OFF_TEXT (objfile
));
3685 svalue
+= ANOFFSET (objfile
->section_offsets
,
3686 SECT_OFF_DATA (objfile
));
3690 svalue
+= ANOFFSET (objfile
->section_offsets
,
3691 SECT_OFF_BSS (objfile
));
3698 /* These are generated for static symbols in .o files,
3703 /* External procedure symbols have been entered
3704 into the minimal symbol table in pass 2 above.
3705 Ignore them, as parse_external will ignore them too. */
3708 theclass
= LOC_LABEL
;
3711 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3712 /* Fall through, pretend it's global. */
3714 /* Global common symbols are resolved by the runtime loader,
3716 if (SC_IS_COMMON (psh
->sc
))
3719 theclass
= LOC_STATIC
;
3722 name
= debug_info
->ssext
+ psh
->iss
;
3723 add_psymbol_to_list (name
, strlen (name
), 1,
3724 VAR_DOMAIN
, theclass
,
3725 &objfile
->global_psymbols
,
3726 svalue
, psymtab_language
, objfile
);
3730 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3731 empty and put on the free list. */
3732 fdr_to_pst
[f_idx
].pst
3733 = dbx_end_psymtab (objfile
, save_pst
,
3734 psymtab_include_list
, includes_used
,
3735 -1, save_pst
->texthigh
,
3736 dependency_list
, dependencies_used
,
3739 dependencies_used
= 0;
3741 /* The objfile has its functions reordered if this partial symbol
3742 table overlaps any other partial symbol table.
3743 We cannot assume a reordered objfile if a partial symbol table
3744 is contained within another partial symbol table, as partial symbol
3745 tables for include files with executable code are contained
3746 within the partial symbol table for the including source file,
3747 and we do not want to flag the objfile reordered for these cases.
3749 This strategy works well for Irix-5.2 shared libraries, but we
3750 might have to use a more elaborate (and slower) algorithm for
3752 save_pst
= fdr_to_pst
[f_idx
].pst
;
3753 if (save_pst
!= NULL
3754 && save_pst
->textlow
!= 0
3755 && !(objfile
->flags
& OBJF_REORDERED
))
3757 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3760 && save_pst
->textlow
>= pst
->textlow
3761 && save_pst
->textlow
< pst
->texthigh
3762 && save_pst
->texthigh
> pst
->texthigh
)
3764 objfile
->flags
|= OBJF_REORDERED
;
3771 /* Now scan the FDRs for dependencies. */
3772 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3774 fh
= f_idx
+ debug_info
->fdr
;
3775 pst
= fdr_to_pst
[f_idx
].pst
;
3777 if (pst
== (struct partial_symtab
*) NULL
)
3780 /* This should catch stabs-in-ecoff. */
3784 /* Skip the first file indirect entry as it is a self dependency for
3785 source files or a reverse .h -> .c dependency for header files. */
3786 pst
->number_of_dependencies
= 0;
3788 ((struct partial_symtab
**)
3789 obstack_alloc (&objfile
->objfile_obstack
,
3791 * sizeof (struct partial_symtab
*))));
3792 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3796 (*swap_rfd_in
) (cur_bfd
,
3797 ((char *) debug_info
->external_rfd
3798 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3800 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3802 complaint (&symfile_complaints
, _("bad file number %ld"), rh
);
3806 /* Skip self dependencies of header files. */
3810 /* Do not add to dependeny list if psymtab was empty. */
3811 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3813 pst
->dependencies
[pst
->number_of_dependencies
++]
3814 = fdr_to_pst
[rh
].pst
;
3818 /* Remove the dummy psymtab created for -O3 images above, if it is
3819 still empty, to enable the detection of stripped executables. */
3820 if (objfile
->psymtabs
->next
== NULL
3821 && objfile
->psymtabs
->number_of_dependencies
== 0
3822 && objfile
->psymtabs
->n_global_syms
== 0
3823 && objfile
->psymtabs
->n_static_syms
== 0)
3824 objfile
->psymtabs
= NULL
;
3825 do_cleanups (old_chain
);
3828 /* If the current psymbol has an enumerated type, we need to add
3829 all the enum constants to the partial symbol table. */
3832 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3835 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3836 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3837 char *ext_sym
= ((char *) debug_info
->external_sym
3838 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3848 /* It is an enumerated type if the next symbol entry is a stMember
3849 and its auxiliary index is indexNil or its auxiliary entry
3850 is a plain btNil or btVoid.
3851 Alpha cc -migrate enums are recognized by a zero index and
3852 a zero symbol value.
3853 DU 4.0 cc enums are recognized by a member type of btEnum without
3854 qualifiers and a zero symbol value. */
3855 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3856 if (sh
.st
!= stMember
)
3859 if (sh
.index
== indexNil
3860 || (sh
.index
== 0 && svalue
== 0))
3862 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3863 &(debug_info
->external_aux
3864 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3866 if ((tir
.bt
!= btNil
3868 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3869 || tir
.tq0
!= tqNil
)
3881 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3882 if (sh
.st
!= stMember
)
3884 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3886 /* Note that the value doesn't matter for enum constants
3887 in psymtabs, just in symtabs. */
3888 add_psymbol_to_list (name
, strlen (name
), 1,
3889 VAR_DOMAIN
, LOC_CONST
,
3890 &objfile
->static_psymbols
,
3891 0, psymtab_language
, objfile
);
3892 ext_sym
+= external_sym_size
;
3896 /* Get the next symbol. OBJFILE is unused. */
3899 mdebug_next_symbol_text (struct objfile
*objfile
)
3904 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3905 ((char *) debug_info
->external_sym
3906 + ((cur_fdr
->isymBase
+ cur_sdx
)
3907 * debug_swap
->external_sym_size
)),
3909 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3912 /* Ancillary function to psymtab_to_symtab(). Does all the work
3913 for turning the partial symtab PST into a symtab, recurring
3914 first on all dependent psymtabs. The argument FILENAME is
3915 only passed so we can see in debug stack traces what file
3918 This function has a split personality, based on whether the
3919 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3920 The flow of control and even the memory allocation differs. FIXME. */
3923 psymtab_to_symtab_1 (struct objfile
*objfile
,
3924 struct partial_symtab
*pst
, const char *filename
)
3926 bfd_size_type external_sym_size
;
3927 bfd_size_type external_pdr_size
;
3928 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3929 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3931 struct compunit_symtab
*cust
= NULL
;
3933 struct linetable
*lines
;
3934 CORE_ADDR lowest_pdr_addr
= 0;
3935 int last_symtab_ended
= 0;
3936 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3942 /* Read in all partial symbtabs on which this one is dependent.
3943 NOTE that we do have circular dependencies, sigh. We solved
3944 that by setting pst->readin before this point. */
3946 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3947 if (!pst
->dependencies
[i
]->readin
)
3949 /* Inform about additional files to be read in. */
3952 fputs_filtered (" ", gdb_stdout
);
3954 fputs_filtered ("and ", gdb_stdout
);
3956 printf_filtered ("%s...",
3957 pst
->dependencies
[i
]->filename
);
3958 wrap_here (""); /* Flush output */
3959 gdb_flush (gdb_stdout
);
3961 /* We only pass the filename for debug purposes. */
3962 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3963 pst
->dependencies
[i
]->filename
);
3966 /* Do nothing if this is a dummy psymtab. */
3968 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3969 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3972 /* Now read the symbols for this symtab. */
3974 cur_bfd
= CUR_BFD (pst
);
3975 debug_swap
= DEBUG_SWAP (pst
);
3976 debug_info
= DEBUG_INFO (pst
);
3977 pending_list
= PENDING_LIST (pst
);
3978 external_sym_size
= debug_swap
->external_sym_size
;
3979 external_pdr_size
= debug_swap
->external_pdr_size
;
3980 swap_sym_in
= debug_swap
->swap_sym_in
;
3981 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3982 mdebugread_objfile
= objfile
;
3983 cur_fd
= FDR_IDX (pst
);
3984 fh
= ((cur_fd
== -1)
3986 : debug_info
->fdr
+ cur_fd
);
3989 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3990 processing_gcc_compilation
= 0;
3991 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3995 (*swap_sym_in
) (cur_bfd
,
3996 ((char *) debug_info
->external_sym
3997 + (fh
->isymBase
+ 1) * external_sym_size
),
3999 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
4002 /* We indicate that this is a GCC compilation so that certain
4003 features will be enabled in stabsread/dbxread. */
4004 processing_gcc_compilation
= 2;
4008 if (processing_gcc_compilation
!= 0)
4010 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4012 /* This symbol table contains stabs-in-ecoff entries. */
4014 /* Parse local symbols first. */
4016 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
4018 mdebugread_objfile
= NULL
;
4021 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
4027 (*swap_sym_in
) (cur_bfd
,
4028 (((char *) debug_info
->external_sym
)
4029 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
4031 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4033 /* XXX This is a hack. It will go away! */
4034 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
4036 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
4038 /* We should never get non N_STAB symbols here, but they
4039 should be harmless, so keep process_one_symbol from
4040 complaining about them. */
4041 if (type_code
& N_STAB
)
4043 /* If we found a trailing N_SO with no name, process
4044 it here instead of in process_one_symbol, so we
4045 can keep a handle to its symtab. The symtab
4046 would otherwise be ended twice, once in
4047 process_one_symbol, and once after this loop. */
4048 if (type_code
== N_SO
4049 && get_last_source_file ()
4050 && previous_stab_code
!= (unsigned char) N_SO
4053 valu
+= ANOFFSET (section_offsets
,
4054 SECT_OFF_TEXT (objfile
));
4055 previous_stab_code
= N_SO
;
4056 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4058 last_symtab_ended
= 1;
4062 last_symtab_ended
= 0;
4063 process_one_symbol (type_code
, 0, valu
, name
,
4064 section_offsets
, objfile
);
4067 /* Similarly a hack. */
4068 else if (name
[0] == '#')
4070 process_one_symbol (N_SLINE
, 0, valu
, name
,
4071 section_offsets
, objfile
);
4073 if (type_code
== N_FUN
)
4075 /* Make up special symbol to contain
4076 procedure specific info. */
4077 struct mdebug_extra_func_info
*e
=
4078 ((struct mdebug_extra_func_info
*)
4079 obstack_alloc (&mdebugread_objfile
->objfile_obstack
,
4080 sizeof (struct mdebug_extra_func_info
)));
4081 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4083 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
4084 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4085 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4086 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4087 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4088 e
->pdr
.framereg
= -1;
4089 add_symbol_to_list (s
, &local_symbols
);
4092 else if (sh
.st
== stLabel
)
4094 if (sh
.index
== indexNil
)
4096 /* This is what the gcc2_compiled and __gnu_compiled_*
4097 show up as. So don't complain. */
4102 /* Handle encoded stab line number. */
4103 valu
+= ANOFFSET (section_offsets
,
4104 SECT_OFF_TEXT (objfile
));
4105 record_line (current_subfile
, sh
.index
,
4106 gdbarch_addr_bits_remove (gdbarch
, valu
));
4109 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4110 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4111 /* These are generated by gcc-2.x, do not complain. */
4114 complaint (&symfile_complaints
,
4115 _("unknown stabs symbol %s"), name
);
4118 if (! last_symtab_ended
)
4120 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4124 /* There used to be a call to sort_blocks here, but this should not
4125 be necessary for stabs symtabs. And as sort_blocks modifies the
4126 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4127 it did the wrong thing if the first procedure in a file was
4128 generated via asm statements. */
4130 /* Fill in procedure info next. */
4134 struct cleanup
*old_chain
;
4140 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4141 old_chain
= make_cleanup (xfree
, pr_block
);
4143 pdr_ptr
= ((char *) debug_info
->external_pdr
4144 + fh
->ipdFirst
* external_pdr_size
);
4145 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4149 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4151 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4153 /* Determine lowest PDR address, the PDRs are not always
4155 if (pdr_in
== pr_block
)
4156 lowest_pdr_addr
= pdr_in
->adr
;
4157 else if (pdr_in
->adr
< lowest_pdr_addr
)
4158 lowest_pdr_addr
= pdr_in
->adr
;
4162 pdr_in_end
= pdr_in
+ fh
->cpd
;
4163 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4164 parse_procedure (pdr_in
, cust
, pst
);
4166 do_cleanups (old_chain
);
4171 /* This symbol table contains ordinary ecoff entries. */
4179 cust
= new_symtab ("unknown", 0, objfile
);
4183 maxlines
= 2 * fh
->cline
;
4184 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4186 /* The proper language was already determined when building
4187 the psymtab, use it. */
4188 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4191 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4193 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4195 /* Get a new lexical context. */
4197 push_parse_stack ();
4198 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4199 top_stack
->cur_block
4200 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4201 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4202 BLOCK_END (top_stack
->cur_block
) = 0;
4203 top_stack
->blocktype
= stFile
;
4204 top_stack
->cur_type
= 0;
4205 top_stack
->procadr
= 0;
4206 top_stack
->numargs
= 0;
4207 found_ecoff_debugging_info
= 0;
4214 /* Parse local symbols first. */
4215 sym_ptr
= ((char *) debug_info
->external_sym
4216 + fh
->isymBase
* external_sym_size
);
4217 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4218 while (sym_ptr
< sym_end
)
4223 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4224 c
= parse_symbol (&sh
,
4225 debug_info
->external_aux
+ fh
->iauxBase
,
4226 sym_ptr
, fh
->fBigendian
,
4227 section_offsets
, objfile
);
4228 sym_ptr
+= c
* external_sym_size
;
4231 /* Linenumbers. At the end, check if we can save memory.
4232 parse_lines has to look ahead an arbitrary number of PDR
4233 structures, so we swap them all first. */
4237 struct cleanup
*old_chain
;
4243 pr_block
= XNEWVEC (PDR
, fh
->cpd
);
4245 old_chain
= make_cleanup (xfree
, pr_block
);
4247 pdr_ptr
= ((char *) debug_info
->external_pdr
4248 + fh
->ipdFirst
* external_pdr_size
);
4249 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4253 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4255 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4257 /* Determine lowest PDR address, the PDRs are not always
4259 if (pdr_in
== pr_block
)
4260 lowest_pdr_addr
= pdr_in
->adr
;
4261 else if (pdr_in
->adr
< lowest_pdr_addr
)
4262 lowest_pdr_addr
= pdr_in
->adr
;
4265 parse_lines (fh
, pr_block
, lines
, maxlines
,
4266 pst
, lowest_pdr_addr
);
4267 if (lines
->nitems
< fh
->cline
)
4268 lines
= shrink_linetable (lines
);
4270 /* Fill in procedure info next. */
4272 pdr_in_end
= pdr_in
+ fh
->cpd
;
4273 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4274 parse_procedure (pdr_in
, NULL
, pst
);
4276 do_cleanups (old_chain
);
4280 size
= lines
->nitems
;
4283 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4284 = ((struct linetable
*)
4285 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4286 lines
, (sizeof (struct linetable
)
4287 + size
* sizeof (lines
->item
))));
4290 /* .. and our share of externals.
4291 XXX use the global list to speed up things here. How?
4292 FIXME, Maybe quit once we have found the right number of ext's? */
4293 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4294 top_stack
->cur_block
4295 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4297 top_stack
->blocktype
= stFile
;
4299 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4300 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4301 parse_external (ext_ptr
, fh
->fBigendian
,
4302 section_offsets
, objfile
);
4304 /* If there are undefined symbols, tell the user.
4305 The alpha has an undefined symbol for every symbol that is
4306 from a shared library, so tell the user only if verbose is on. */
4307 if (info_verbose
&& n_undef_symbols
)
4309 printf_filtered (_("File %s contains %d unresolved references:"),
4310 symtab_to_filename_for_display
4311 (COMPUNIT_FILETABS (cust
)),
4313 printf_filtered ("\n\t%4d variables\n\t%4d "
4314 "procedures\n\t%4d labels\n",
4315 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4316 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4321 sort_blocks (COMPUNIT_FILETABS (cust
));
4324 /* Now link the psymtab and the symtab. */
4325 pst
->compunit_symtab
= cust
;
4327 mdebugread_objfile
= NULL
;
4330 /* Ancillary parsing procedures. */
4332 /* Return 1 if the symbol pointed to by SH has a cross reference
4333 to an opaque aggregate type, else 0. */
4336 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4343 if (sh
->index
== indexNil
)
4346 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4347 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4348 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4352 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4353 if (rn
->rfd
== 0xfff)
4354 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4362 /* Lookup the type at relative index RN. Return it in TPP
4363 if found and in any event come up with its name PNAME.
4364 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4365 Return value says how many aux symbols we ate. */
4368 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4369 enum type_code type_code
,
4370 /* Use to alloc new type if none is found. */
4371 char **pname
, int bigend
, char *sym_name
)
4380 struct mdebug_pending
*pend
;
4384 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4386 /* Escape index means 'the next one'. */
4387 if (rn
->rfd
== 0xfff)
4390 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4397 /* mips cc uses a rf of -1 for opaque struct definitions.
4398 Set TYPE_FLAG_STUB for these types so that check_typedef will
4399 resolve them if the struct gets defined in another compilation unit. */
4402 *pname
= "<undefined>";
4403 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
,
4404 (char *) NULL
, mdebugread_objfile
);
4408 /* mips cc uses an escaped rn->index of 0 for struct return types
4409 of procedures that were compiled without -g. These will always remain
4411 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4413 *pname
= "<undefined>";
4417 /* Find the relative file descriptor and the symbol in it. */
4418 fh
= get_rfd (fd
, rf
);
4419 xref_fd
= fh
- debug_info
->fdr
;
4421 if (rn
->index
>= fh
->csym
)
4423 /* File indirect entry is corrupt. */
4424 *pname
= "<illegal>";
4425 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4429 /* If we have processed this symbol then we left a forwarding
4430 pointer to the type in the pending list. If not, we`ll put
4431 it in a list of pending types, to be processed later when
4432 the file will be. In any event, we collect the name for the
4435 esh
= ((char *) debug_info
->external_sym
4436 + ((fh
->isymBase
+ rn
->index
)
4437 * debug_swap
->external_sym_size
));
4438 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4440 /* Make sure that this type of cross reference can be handled. */
4441 if ((sh
.sc
!= scInfo
4442 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4443 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4444 && sh
.st
!= stEnum
))
4445 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4447 /* File indirect entry is corrupt. */
4448 *pname
= "<illegal>";
4449 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4453 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4455 pend
= is_pending_symbol (fh
, esh
);
4460 /* We have not yet seen this type. */
4462 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4466 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4468 a) forward declarations of structs/unions/enums which are not
4469 defined in this compilation unit.
4470 For these the type will be void. This is a bad design decision
4471 as cross referencing across compilation units is impossible
4472 due to the missing name.
4473 b) forward declarations of structs/unions/enums/typedefs which
4474 are defined later in this file or in another file in the same
4475 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4476 Simply cross reference those again to get the true type.
4477 The forward references are not entered in the pending list and
4478 in the symbol table. */
4480 (*debug_swap
->swap_tir_in
) (bigend
,
4481 &(debug_info
->external_aux
4482 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4484 if (tir
.tq0
!= tqNil
)
4485 complaint (&symfile_complaints
,
4486 _("illegal tq0 in forward typedef for %s"), sym_name
);
4490 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4491 mdebugread_objfile
);
4492 *pname
= "<undefined>";
4499 (debug_info
->external_aux
4500 + fh
->iauxBase
+ sh
.index
+ 1),
4501 tpp
, type_code
, pname
,
4502 fh
->fBigendian
, sym_name
);
4506 /* Follow a forward typedef. This might recursively
4507 call cross_ref till we get a non typedef'ed type.
4508 FIXME: This is not correct behaviour, but gdb currently
4509 cannot handle typedefs without type copying. Type
4510 copying is impossible as we might have mutual forward
4511 references between two files and the copied type would not
4512 get filled in when we later parse its definition. */
4513 *tpp
= parse_type (xref_fd
,
4514 debug_info
->external_aux
+ fh
->iauxBase
,
4518 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4519 add_pending (fh
, esh
, *tpp
);
4523 complaint (&symfile_complaints
,
4524 _("illegal bt %d in forward typedef for %s"), tir
.bt
,
4526 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4527 mdebugread_objfile
);
4532 else if (sh
.st
== stTypedef
)
4534 /* Parse the type for a normal typedef. This might recursively call
4535 cross_ref till we get a non typedef'ed type.
4536 FIXME: This is not correct behaviour, but gdb currently
4537 cannot handle typedefs without type copying. But type copying is
4538 impossible as we might have mutual forward references between
4539 two files and the copied type would not get filled in when
4540 we later parse its definition. */
4541 *tpp
= parse_type (xref_fd
,
4542 debug_info
->external_aux
+ fh
->iauxBase
,
4546 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4550 /* Cross reference to a struct/union/enum which is defined
4551 in another file in the same compilation unit but that file
4552 has not been parsed yet.
4553 Initialize the type only, it will be filled in when
4554 it's definition is parsed. */
4555 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, mdebugread_objfile
);
4557 add_pending (fh
, esh
, *tpp
);
4560 /* We used one auxent normally, two if we got a "next one" rf. */
4565 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4566 keeping the symtab sorted. */
4568 static struct symbol
*
4569 mylookup_symbol (char *name
, const struct block
*block
,
4570 domain_enum domain
, enum address_class theclass
)
4572 struct block_iterator iter
;
4577 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4579 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4580 && SYMBOL_DOMAIN (sym
) == domain
4581 && SYMBOL_CLASS (sym
) == theclass
4582 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4586 block
= BLOCK_SUPERBLOCK (block
);
4588 return mylookup_symbol (name
, block
, domain
, theclass
);
4593 /* Add a new symbol S to a block B. */
4596 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4598 symbol_set_symtab (s
, symtab
);
4599 dict_add_symbol (BLOCK_DICT (b
), s
);
4602 /* Add a new block B to a symtab S. */
4605 add_block (struct block
*b
, struct symtab
*s
)
4607 /* Cast away "const", but that's ok because we're building the
4608 symtab and blockvector here. */
4609 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4611 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4612 (sizeof (struct blockvector
)
4613 + BLOCKVECTOR_NBLOCKS (bv
)
4614 * sizeof (bv
->block
)));
4615 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4616 SYMTAB_BLOCKVECTOR (s
) = bv
;
4618 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4621 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4622 MIPS' linenumber encoding might need more than one byte
4623 to describe it, LAST is used to detect these continuation lines.
4625 Combining lines with the same line number seems like a bad idea.
4626 E.g: There could be a line number entry with the same line number after the
4627 prologue and GDB should not ignore it (this is a better way to find
4628 a prologue than mips_skip_prologue).
4629 But due to the compressed line table format there are line number entries
4630 for the same line which are needed to bridge the gap to the next
4631 line number entry. These entries have a bogus address info with them
4632 and we are unable to tell them from intended duplicate line number
4634 This is another reason why -ggdb debugging format is preferable. */
4637 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4639 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4640 Change them to something sensible. */
4644 last
= -2; /* Make sure we record first line. */
4646 if (last
== lineno
) /* Skip continuation lines. */
4649 lt
->item
[lt
->nitems
].line
= lineno
;
4650 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4654 /* Sorting and reordering procedures. */
4656 /* Blocks with a smaller low bound should come first. */
4659 compare_blocks (const void *arg1
, const void *arg2
)
4662 struct block
**b1
= (struct block
**) arg1
;
4663 struct block
**b2
= (struct block
**) arg2
;
4665 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4667 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4671 /* Sort the blocks of a symtab S.
4672 Reorder the blocks in the blockvector by code-address,
4673 as required by some MI search routines. */
4676 sort_blocks (struct symtab
*s
)
4678 /* We have to cast away const here, but this is ok because we're
4679 constructing the blockvector in this code. */
4680 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4682 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4685 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4686 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4687 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4688 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4692 * This is very unfortunate: normally all functions are compiled in
4693 * the order they are found, but if the file is compiled -O3 things
4694 * are very different. It would be nice to find a reliable test
4695 * to detect -O3 images in advance.
4697 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4698 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4699 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4700 sizeof (struct block
*),
4705 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4707 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4708 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4709 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4710 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4713 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4714 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4716 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4717 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4718 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4719 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4723 /* Constructor/restructor/destructor procedures. */
4725 /* Allocate a new symtab for NAME. Needs an estimate of how many
4726 linenumbers MAXLINES we'll put in it. */
4728 static struct compunit_symtab
*
4729 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4731 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4732 struct symtab
*symtab
;
4733 struct blockvector
*bv
;
4735 add_compunit_symtab_to_objfile (cust
);
4736 symtab
= allocate_symtab (cust
, name
);
4738 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4740 /* All symtabs must have at least two blocks. */
4742 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4743 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
);
4744 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4745 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4746 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4748 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4752 /* Allocate a new partial_symtab NAME. */
4754 static struct partial_symtab
*
4755 new_psymtab (char *name
, struct objfile
*objfile
)
4757 struct partial_symtab
*psymtab
;
4759 psymtab
= allocate_psymtab (name
, objfile
);
4761 /* Keep a backpointer to the file's symbols. */
4763 psymtab
->read_symtab_private
= obstack_alloc (&objfile
->objfile_obstack
,
4764 sizeof (struct symloc
));
4765 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4766 CUR_BFD (psymtab
) = cur_bfd
;
4767 DEBUG_SWAP (psymtab
) = debug_swap
;
4768 DEBUG_INFO (psymtab
) = debug_info
;
4769 PENDING_LIST (psymtab
) = pending_list
;
4771 /* The way to turn this into a symtab is to call... */
4772 psymtab
->read_symtab
= mdebug_read_symtab
;
4777 /* Allocate a linetable array of the given SIZE. Since the struct
4778 already includes one item, we subtract one when calculating the
4779 proper size to allocate. */
4781 static struct linetable
*
4782 new_linetable (int size
)
4784 struct linetable
*l
;
4788 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4789 l
= (struct linetable
*) xmalloc (size
);
4794 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4795 I am not so sure about the 3.4 ones.
4797 Since the struct linetable already includes one item, we subtract one when
4798 calculating the proper size to allocate. */
4800 static struct linetable
*
4801 shrink_linetable (struct linetable
*lt
)
4803 return (struct linetable
*) xrealloc ((void *) lt
,
4804 (sizeof (struct linetable
)
4806 * sizeof (lt
->item
))));
4809 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4811 static struct blockvector
*
4812 new_bvect (int nblocks
)
4814 struct blockvector
*bv
;
4817 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4818 bv
= (struct blockvector
*) xzalloc (size
);
4820 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4825 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4826 is non-zero, assume the block is associated to a function, and make
4827 sure that the symbols are stored linearly; otherwise, store them
4830 static struct block
*
4831 new_block (enum block_type type
)
4833 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4834 allocate the block. Which, in turn, suggests that the block
4835 should be allocated on an obstack. */
4836 struct block
*retval
= XCNEW (struct block
);
4838 if (type
== FUNCTION_BLOCK
)
4839 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4841 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4846 /* Create a new symbol with printname NAME. */
4848 static struct symbol
*
4849 new_symbol (char *name
)
4851 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4853 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4854 &mdebugread_objfile
->objfile_obstack
);
4855 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4859 /* Create a new type with printname NAME. */
4861 static struct type
*
4862 new_type (char *name
)
4866 t
= alloc_type (mdebugread_objfile
);
4867 TYPE_NAME (t
) = name
;
4868 INIT_CPLUS_SPECIFIC (t
);
4872 /* Read ECOFF debugging information from a BFD section. This is
4873 called from elfread.c. It parses the section into a
4874 ecoff_debug_info struct, and then lets the rest of the file handle
4878 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4879 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4881 bfd
*abfd
= objfile
->obfd
;
4882 struct ecoff_debug_info
*info
;
4883 struct cleanup
*back_to
;
4885 /* FIXME: It's not clear whether we should be getting minimal symbol
4886 information from .mdebug in an ELF file, or whether we will.
4887 Re-initialize the minimal symbol reader in case we do. */
4889 init_minimal_symbol_collection ();
4890 back_to
= make_cleanup_discard_minimal_symbols ();
4892 info
= ((struct ecoff_debug_info
*)
4893 obstack_alloc (&objfile
->objfile_obstack
,
4894 sizeof (struct ecoff_debug_info
)));
4896 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4897 error (_("Error reading ECOFF debugging information: %s"),
4898 bfd_errmsg (bfd_get_error ()));
4900 mdebug_build_psymtabs (objfile
, swap
, info
);
4902 install_minimal_symbols (objfile
);
4903 do_cleanups (back_to
);
4907 _initialize_mdebugread (void)
4909 basic_type_data
= register_objfile_data ();
4911 mdebug_register_index
4912 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4913 mdebug_regparm_index
4914 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);