1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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. */
50 #include "stabsread.h"
51 #include "complaints.h"
54 /* These are needed if the tm.h file does not contain the necessary
55 mips specific definitions. */
57 #ifndef MIPS_EFI_SYMBOL_NAME
58 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
59 extern void ecoff_relocate_efi
PARAMS ((struct symbol
*, CORE_ADDR
));
61 #include "coff/symconst.h"
62 typedef struct mips_extra_func_info
{
65 } *mips_extra_func_info_t
;
72 #include <sys/types.h>
76 #include "gdb_string.h"
78 #include "gdb-stabs.h"
82 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
84 #include "libaout.h" /* Private BFD a.out information. */
85 #include "aout/aout64.h"
86 #include "aout/stab_gnu.h" /* STABS information */
88 #include "expression.h"
89 #include "language.h" /* Needed inside partial-stab.h */
91 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
92 #ifndef ECOFF_REG_TO_REGNUM
93 #define ECOFF_REG_TO_REGNUM(num) (num)
96 /* We put a pointer to this structure in the read_symtab_private field
101 /* Index of the FDR that this psymtab represents. */
103 /* The BFD that the psymtab was created from. */
105 const struct ecoff_debug_swap
*debug_swap
;
106 struct ecoff_debug_info
*debug_info
;
107 struct mdebug_pending
**pending_list
;
108 /* Pointer to external symbols for this file. */
110 /* Size of extern_tab. */
112 enum language pst_language
;
115 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
116 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
117 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
118 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
119 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
120 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
122 /* Things we import explicitly from other modules */
124 extern int info_verbose
;
126 /* Various complaints about symbol reading that don't abort the process */
128 static struct complaint bad_file_number_complaint
=
129 {"bad file number %d", 0, 0};
131 static struct complaint index_complaint
=
132 {"bad aux index at symbol %s", 0, 0};
134 static struct complaint aux_index_complaint
=
135 {"bad proc end in aux found from symbol %s", 0, 0};
137 static struct complaint block_index_complaint
=
138 {"bad aux index at block symbol %s", 0, 0};
140 static struct complaint unknown_ext_complaint
=
141 {"unknown external symbol %s", 0, 0};
143 static struct complaint unknown_sym_complaint
=
144 {"unknown local symbol %s", 0, 0};
146 static struct complaint unknown_st_complaint
=
147 {"with type %d", 0, 0};
149 static struct complaint block_overflow_complaint
=
150 {"block containing %s overfilled", 0, 0};
152 static struct complaint basic_type_complaint
=
153 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
155 static struct complaint unknown_type_qual_complaint
=
156 {"unknown type qualifier 0x%x", 0, 0};
158 static struct complaint array_index_type_complaint
=
159 {"illegal array index type for %s, assuming int", 0, 0};
161 static struct complaint bad_tag_guess_complaint
=
162 {"guessed tag type of %s incorrectly", 0, 0};
164 static struct complaint block_member_complaint
=
165 {"declaration block contains unhandled symbol type %d", 0, 0};
167 static struct complaint stEnd_complaint
=
168 {"stEnd with storage class %d not handled", 0, 0};
170 static struct complaint unknown_mdebug_symtype_complaint
=
171 {"unknown symbol type 0x%x", 0, 0};
173 static struct complaint stab_unknown_complaint
=
174 {"unknown stabs symbol %s", 0, 0};
176 static struct complaint pdr_for_nonsymbol_complaint
=
177 {"PDR for %s, but no symbol", 0, 0};
179 static struct complaint pdr_static_symbol_complaint
=
180 {"can't handle PDR for static proc at 0x%lx", 0, 0};
182 static struct complaint bad_setjmp_pdr_complaint
=
183 {"fixing bad setjmp PDR from libc", 0, 0};
185 static struct complaint bad_fbitfield_complaint
=
186 {"can't handle TIR fBitfield for %s", 0, 0};
188 static struct complaint bad_continued_complaint
=
189 {"illegal TIR continued for %s", 0, 0};
191 static struct complaint bad_rfd_entry_complaint
=
192 {"bad rfd entry for %s: file %d, index %d", 0, 0};
194 static struct complaint unexpected_type_code_complaint
=
195 {"unexpected type code for %s", 0, 0};
197 static struct complaint unable_to_cross_ref_complaint
=
198 {"unable to cross ref btTypedef for %s", 0, 0};
200 static struct complaint bad_indirect_xref_complaint
=
201 {"unable to cross ref btIndirect for %s", 0, 0};
203 static struct complaint illegal_forward_tq0_complaint
=
204 {"illegal tq0 in forward typedef for %s", 0, 0};
206 static struct complaint illegal_forward_bt_complaint
=
207 {"illegal bt %d in forward typedef for %s", 0, 0};
209 static struct complaint bad_linetable_guess_complaint
=
210 {"guessed size of linetable for %s incorrectly", 0, 0};
212 static struct complaint bad_ext_ifd_complaint
=
213 {"bad ifd for external symbol: %d (max %d)", 0, 0};
215 static struct complaint bad_ext_iss_complaint
=
216 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
218 /* Macros and extra defs */
220 /* Puns: hard to find whether -g was used and how */
222 #define MIN_GLEVEL GLEVEL_0
223 #define compare_glevel(a,b) \
224 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
225 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
227 /* Things that really are local to this module */
229 /* Remember what we deduced to be the source language of this psymtab. */
231 static enum language psymtab_language
= language_unknown
;
237 /* How to parse debugging information for CUR_BFD. */
239 static const struct ecoff_debug_swap
*debug_swap
;
241 /* Pointers to debugging information for CUR_BFD. */
243 static struct ecoff_debug_info
*debug_info
;
245 /* Pointer to current file decriptor record, and its index */
250 /* Index of current symbol */
254 /* Note how much "debuggable" this image is. We would like
255 to see at least one FDR with full symbols */
257 static int max_gdbinfo
;
258 static int max_glevel
;
260 /* When examining .o files, report on undefined symbols */
262 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
264 /* Pseudo symbol to use when putting stabs into the symbol table. */
266 static char stabs_symbol
[] = STABS_SYMBOL
;
268 /* Types corresponding to mdebug format bt* basic types. */
270 static struct type
*mdebug_type_void
;
271 static struct type
*mdebug_type_char
;
272 static struct type
*mdebug_type_short
;
273 static struct type
*mdebug_type_int_32
;
274 #define mdebug_type_int mdebug_type_int_32
275 static struct type
*mdebug_type_int_64
;
276 static struct type
*mdebug_type_long_32
;
277 static struct type
*mdebug_type_long_64
;
278 static struct type
*mdebug_type_long_long_64
;
279 static struct type
*mdebug_type_unsigned_char
;
280 static struct type
*mdebug_type_unsigned_short
;
281 static struct type
*mdebug_type_unsigned_int_32
;
282 static struct type
*mdebug_type_unsigned_int_64
;
283 static struct type
*mdebug_type_unsigned_long_32
;
284 static struct type
*mdebug_type_unsigned_long_64
;
285 static struct type
*mdebug_type_unsigned_long_long_64
;
286 static struct type
*mdebug_type_adr_32
;
287 static struct type
*mdebug_type_adr_64
;
288 static struct type
*mdebug_type_float
;
289 static struct type
*mdebug_type_double
;
290 static struct type
*mdebug_type_complex
;
291 static struct type
*mdebug_type_double_complex
;
292 static struct type
*mdebug_type_fixed_dec
;
293 static struct type
*mdebug_type_float_dec
;
294 static struct type
*mdebug_type_string
;
296 /* Types for symbols from files compiled without debugging info. */
298 static struct type
*nodebug_func_symbol_type
;
299 static struct type
*nodebug_var_symbol_type
;
301 /* Nonzero if we have seen ecoff debugging info for a file. */
303 static int found_ecoff_debugging_info
;
305 /* Forward declarations */
308 add_pending
PARAMS ((FDR
*, char *, struct type
*));
310 static struct mdebug_pending
*
311 is_pending_symbol
PARAMS ((FDR
*, char *));
314 pop_parse_stack
PARAMS ((void));
317 push_parse_stack
PARAMS ((void));
320 fdr_name
PARAMS ((FDR
*));
323 mdebug_psymtab_to_symtab
PARAMS ((struct partial_symtab
*));
326 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
329 parse_partial_symbols
PARAMS ((struct objfile
*,
330 struct section_offsets
*));
333 *get_rfd
PARAMS ((int, int));
336 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
339 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
340 char **, int, char *));
342 static struct symbol
*
343 new_symbol
PARAMS ((char *));
346 new_type
PARAMS ((char *));
348 static struct block
*
349 new_block
PARAMS ((int));
351 static struct symtab
*
352 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
354 static struct linetable
*
355 new_linetable
PARAMS ((int));
357 static struct blockvector
*
358 new_bvect
PARAMS ((int));
361 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
364 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
366 static struct symbol
*
367 mylookup_symbol
PARAMS ((char *, struct block
*, namespace_enum
,
368 enum address_class
));
370 static struct block
*
371 shrink_block
PARAMS ((struct block
*, struct symtab
*));
374 xzalloc
PARAMS ((unsigned int));
377 sort_blocks
PARAMS ((struct symtab
*));
380 compare_blocks
PARAMS ((const void *, const void *));
382 static struct partial_symtab
*
383 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
386 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
389 add_block
PARAMS ((struct block
*, struct symtab
*));
392 add_symbol
PARAMS ((struct symbol
*, struct block
*));
395 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
397 static struct linetable
*
398 shrink_linetable
PARAMS ((struct linetable
*));
401 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int, CORE_ADDR
));
404 mdebug_next_symbol_text
PARAMS ((struct objfile
*));
406 /* Address bounds for the signal trampoline in inferior, if any */
408 CORE_ADDR sigtramp_address
, sigtramp_end
;
410 /* Allocate zeroed memory */
416 PTR p
= xmalloc (size
);
422 /* Exported procedure: Builds a symtab from the PST partial one.
423 Restores the environment in effect when PST was created, delegates
424 most of the work to an ancillary procedure, and sorts
425 and reorders the symtab list at the end */
428 mdebug_psymtab_to_symtab (pst
)
429 struct partial_symtab
*pst
;
437 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
438 gdb_flush (gdb_stdout
);
441 next_symbol_text_func
= mdebug_next_symbol_text
;
443 psymtab_to_symtab_1 (pst
, pst
->filename
);
445 /* Match with global symbols. This only needs to be done once,
446 after all of the symtabs and dependencies have been read in. */
447 scan_file_globals (pst
->objfile
);
450 printf_filtered ("done.\n");
453 /* File-level interface functions */
455 /* Find a file descriptor given its index RF relative to a file CF */
465 fdrs
= debug_info
->fdr
;
467 /* Object files do not have the RFD table, all refs are absolute */
470 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
471 ((char *) debug_info
->external_rfd
473 * debug_swap
->external_rfd_size
)),
478 /* Return a safer print NAME for a file descriptor */
485 return "<stripped file>";
488 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
492 /* Read in and parse the symtab of the file OBJFILE. Symbols from
493 different sections are relocated via the SECTION_OFFSETS. */
496 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
497 struct objfile
*objfile
;
498 const struct ecoff_debug_swap
*swap
;
499 struct ecoff_debug_info
*info
;
500 struct section_offsets
*section_offsets
;
502 cur_bfd
= objfile
->obfd
;
506 /* Make sure all the FDR information is swapped in. */
507 if (info
->fdr
== (FDR
*) NULL
)
513 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
514 (info
->symbolic_header
.ifdMax
516 fdr_src
= info
->external_fdr
;
518 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
520 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
521 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
524 parse_partial_symbols (objfile
, section_offsets
);
527 /* Check to make sure file was compiled with -g. If not, warn the
528 user of this limitation. */
529 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
531 if (max_gdbinfo
== 0)
532 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
534 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
535 gdb_flush (gdb_stdout
);
540 /* Local utilities */
542 /* Map of FDR indexes to partial symtabs */
546 struct partial_symtab
*pst
; /* the psymtab proper */
547 long n_globals
; /* exported globals (external symbols) */
548 long globals_offset
; /* cumulative */
552 /* Utility stack, used to nest procedures and blocks properly.
553 It is a doubly linked list, to avoid too many alloc/free.
554 Since we might need it quite a few times it is NOT deallocated
557 static struct parse_stack
559 struct parse_stack
*next
, *prev
;
560 struct symtab
*cur_st
; /* Current symtab. */
561 struct block
*cur_block
; /* Block in it. */
563 /* What are we parsing. stFile, or stBlock are for files and
564 blocks. stProc or stStaticProc means we have seen the start of a
565 procedure, but not the start of the block within in. When we see
566 the start of that block, we change it to stNil, without pushing a
567 new block, i.e. stNil means both a procedure and a block. */
571 int maxsyms
; /* Max symbols in this block. */
572 struct type
*cur_type
; /* Type we parse fields for. */
573 int cur_field
; /* Field number in cur_type. */
574 CORE_ADDR procadr
; /* Start addres of this procedure */
575 int numargs
; /* Its argument count */
578 *top_stack
; /* Top stack ptr */
581 /* Enter a new lexical context */
586 struct parse_stack
*new;
588 /* Reuse frames if possible */
589 if (top_stack
&& top_stack
->prev
)
590 new = top_stack
->prev
;
592 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
593 /* Initialize new frame with previous content */
596 register struct parse_stack
*prev
= new->prev
;
599 top_stack
->prev
= new;
601 new->next
= top_stack
;
606 /* Exit a lexical context */
614 top_stack
= top_stack
->next
;
618 /* Cross-references might be to things we haven't looked at
619 yet, e.g. type references. To avoid too many type
620 duplications we keep a quick fixup table, an array
621 of lists of references indexed by file descriptor */
623 struct mdebug_pending
625 struct mdebug_pending
*next
; /* link */
626 char *s
; /* the unswapped symbol */
627 struct type
*t
; /* its partial type descriptor */
631 /* The pending information is kept for an entire object file, and used
632 to be in the sym_private field. I took it out when I split
633 mdebugread from mipsread, because this might not be the only type
634 of symbols read from an object file. Instead, we allocate the
635 pending information table when we create the partial symbols, and
636 we store a pointer to the single table in each psymtab. */
638 static struct mdebug_pending
**pending_list
;
640 /* Check whether we already saw symbol SH in file FH */
642 static struct mdebug_pending
*
643 is_pending_symbol (fh
, sh
)
647 int f_idx
= fh
- debug_info
->fdr
;
648 register struct mdebug_pending
*p
;
650 /* Linear search is ok, list is typically no more than 10 deep */
651 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
657 /* Add a new symbol SH of type T */
660 add_pending (fh
, sh
, t
)
665 int f_idx
= fh
- debug_info
->fdr
;
666 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
668 /* Make sure we do not make duplicates */
671 p
= ((struct mdebug_pending
*)
672 obstack_alloc (¤t_objfile
->psymbol_obstack
,
673 sizeof (struct mdebug_pending
)));
676 p
->next
= pending_list
[f_idx
];
677 pending_list
[f_idx
] = p
;
682 /* Parsing Routines proper. */
684 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
685 For blocks, procedures and types we open a new lexical context.
686 This is basically just a big switch on the symbol's type. Argument
687 AX is the base pointer of aux symbols for this file (fh->iauxBase).
688 EXT_SH points to the unswapped symbol, which is needed for struct,
689 union, etc., types; it is NULL for an EXTR. BIGEND says whether
690 aux symbols are big-endian or little-endian. Return count of
691 SYMR's handled (normally one). */
694 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
699 struct section_offsets
*section_offsets
;
701 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
702 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
703 debug_swap
->swap_sym_in
;
707 struct mdebug_pending
*pend
;
711 enum address_class
class;
713 long svalue
= sh
->value
;
716 if (ext_sh
== (char *) NULL
)
717 name
= debug_info
->ssext
+ sh
->iss
;
719 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
725 /* Do not relocate relative values.
726 The value of a stEnd symbol is the displacement from the
727 corresponding start symbol value.
728 The value of a stBlock symbol is the displacement from the
729 procedure address. */
730 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
731 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
738 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
742 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
751 case stGlobal
: /* external symbol, goes into global block */
753 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
755 s
= new_symbol (name
);
756 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
759 case stStatic
: /* static data, goes into current block. */
761 b
= top_stack
->cur_block
;
762 s
= new_symbol (name
);
763 if (sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
765 /* It is a FORTRAN common block. At least for SGI Fortran the
766 address is not in the symbol; we need to fix it later in
767 scan_file_globals. */
768 int bucket
= hashname (SYMBOL_NAME (s
));
769 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
770 global_sym_chain
[bucket
] = s
;
773 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
776 case stLocal
: /* local variable, goes into current block */
777 if (sh
->sc
== scRegister
)
779 class = LOC_REGISTER
;
780 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
784 b
= top_stack
->cur_block
;
785 s
= new_symbol (name
);
786 SYMBOL_VALUE (s
) = svalue
;
788 data
: /* Common code for symbols describing data */
789 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
790 SYMBOL_CLASS (s
) = class;
793 /* Type could be missing if file is compiled without debugging info. */
794 if (sh
->sc
== scUndefined
|| sh
->sc
== scSUndefined
795 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
796 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
798 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
799 /* Value of a data symbol is its memory address */
802 case stParam
: /* arg to procedure, goes into current block */
804 found_ecoff_debugging_info
= 1;
805 top_stack
->numargs
++;
807 /* Special GNU C++ name. */
808 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
809 name
= "this"; /* FIXME, not alloc'd in obstack */
810 s
= new_symbol (name
);
812 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
816 /* Pass by value in register. */
817 SYMBOL_CLASS(s
) = LOC_REGPARM
;
818 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
821 /* Pass by reference on stack. */
822 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
825 /* Pass by reference in register. */
826 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
827 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
830 /* Pass by value on stack. */
831 SYMBOL_CLASS(s
) = LOC_ARG
;
834 SYMBOL_VALUE (s
) = svalue
;
835 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
836 add_symbol (s
, top_stack
->cur_block
);
839 case stLabel
: /* label, goes into current block */
840 s
= new_symbol (name
);
841 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
842 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
843 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
844 SYMBOL_TYPE (s
) = mdebug_type_int
;
845 add_symbol (s
, top_stack
->cur_block
);
848 case stProc
: /* Procedure, usually goes into global block */
849 case stStaticProc
: /* Static procedure, goes into current block */
850 s
= new_symbol (name
);
851 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
852 SYMBOL_CLASS (s
) = LOC_BLOCK
;
853 /* Type of the return value */
854 if (sh
->sc
== scUndefined
|| sh
->sc
== scSUndefined
|| sh
->sc
== scNil
)
858 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
859 if (STREQ(name
, "malloc") && t
->code
== TYPE_CODE_VOID
)
861 /* I don't know why, but, at least under Linux/Alpha,
862 when linking against a malloc without debugging
863 symbols, its read as a function returning void---this
864 is bad because it means we cannot call functions with
865 string arguments interactively; i.e., "call
866 printf("howdy\n")" would fail with the error message
867 "program has no memory available". To avoid this, we
868 patch up the type and make it void*
869 instead. (davidm@azstarnet.com)
871 t
= make_pointer_type (t
, NULL
);
874 b
= top_stack
->cur_block
;
875 if (sh
->st
== stProc
)
877 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
878 /* The next test should normally be true, but provides a
879 hook for nested functions (which we don't want to make
881 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
882 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
883 /* Irix 5 sometimes has duplicate names for the same
884 function. We want to add such names up at the global
885 level, not as a nested function. */
886 else if (sh
->value
== top_stack
->procadr
)
887 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
891 /* Make a type for the procedure itself */
892 SYMBOL_TYPE (s
) = lookup_function_type (t
);
894 /* Create and enter a new lexical context */
895 b
= new_block (top_stack
->maxsyms
);
896 SYMBOL_BLOCK_VALUE (s
) = b
;
897 BLOCK_FUNCTION (b
) = s
;
898 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
899 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
900 add_block (b
, top_stack
->cur_st
);
902 /* Not if we only have partial info */
903 if (sh
->sc
== scUndefined
|| sh
->sc
== scSUndefined
|| sh
->sc
== scNil
)
907 top_stack
->cur_block
= b
;
908 top_stack
->blocktype
= sh
->st
;
909 top_stack
->cur_type
= SYMBOL_TYPE (s
);
910 top_stack
->cur_field
= -1;
911 top_stack
->procadr
= sh
->value
;
912 top_stack
->numargs
= 0;
915 /* Beginning of code for structure, union, and enum definitions.
916 They all share a common set of local variables, defined here. */
918 enum type_code type_code
;
924 case stStruct
: /* Start a block defining a struct type */
925 type_code
= TYPE_CODE_STRUCT
;
926 goto structured_common
;
928 case stUnion
: /* Start a block defining a union type */
929 type_code
= TYPE_CODE_UNION
;
930 goto structured_common
;
932 case stEnum
: /* Start a block defining an enum type */
933 type_code
= TYPE_CODE_ENUM
;
934 goto structured_common
;
936 case stBlock
: /* Either a lexical block, or some type */
937 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
&& sh
->sc
!= scSCommon
)
938 goto case_stBlock_code
; /* Lexical block */
940 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
942 /* Common code for handling struct, union, enum, and/or as-yet-
943 unknown-type blocks of info about structured data. `type_code'
944 has been set to the proper TYPE_CODE, if we know it. */
946 found_ecoff_debugging_info
= 1;
948 top_stack
->blocktype
= stBlock
;
950 /* First count the number of fields and the highest value. */
953 for (ext_tsym
= ext_sh
+ external_sym_size
;
955 ext_tsym
+= external_sym_size
)
959 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
967 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
968 /* If the type of the member is Nil (or Void),
969 without qualifiers, assume the tag is an
971 Alpha cc -migrate enums are recognized by a zero
972 index and a zero symbol value. */
973 if (tsym
.index
== indexNil
974 || (tsym
.index
== 0 && sh
->value
== 0))
975 type_code
= TYPE_CODE_ENUM
;
978 (*debug_swap
->swap_tir_in
) (bigend
,
979 &ax
[tsym
.index
].a_ti
,
981 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
983 type_code
= TYPE_CODE_ENUM
;
986 if (tsym
.value
> max_value
)
987 max_value
= tsym
.value
;
996 /* This is a no-op; is it trying to tell us something
997 we should be checking? */
998 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
1000 if (tsym
.index
!= 0)
1002 /* This is something like a struct within a
1003 struct. Skip over the fields of the inner
1004 struct. The -1 is because the for loop will
1005 increment ext_tsym. */
1006 ext_tsym
= ((char *) debug_info
->external_sym
1007 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
1008 * external_sym_size
));
1014 /* mips cc puts out a typedef for struct x if it is not yet
1015 defined when it encounters
1016 struct y { struct x *xp; };
1021 /* Irix5 cc puts out a stIndirect for struct x if it is not
1022 yet defined when it encounters
1023 struct y { struct x *xp; };
1028 complain (&block_member_complaint
, tsym
.st
);
1033 /* In an stBlock, there is no way to distinguish structs,
1034 unions, and enums at this point. This is a bug in the
1035 original design (that has been fixed with the recent
1036 addition of the stStruct, stUnion, and stEnum symbol
1037 types.) The way you can tell is if/when you see a variable
1038 or field of that type. In that case the variable's type
1039 (in the AUX table) says if the type is struct, union, or
1040 enum, and points back to the stBlock here. So you can
1041 patch the tag kind up later - but only if there actually is
1042 a variable or field of that type.
1044 So until we know for sure, we will guess at this point.
1046 If the first member has index==indexNil or a void type,
1047 assume we have an enumeration.
1048 Otherwise, if there is more than one member, and all
1049 the members have offset 0, assume we have a union.
1050 Otherwise, assume we have a struct.
1052 The heuristic could guess wrong in the case of of an
1053 enumeration with no members or a union with one (or zero)
1054 members, or when all except the last field of a struct have
1055 width zero. These are uncommon and/or illegal situations,
1056 and in any case guessing wrong probably doesn't matter
1059 But if we later do find out we were wrong, we fixup the tag
1060 kind. Members of an enumeration must be handled
1061 differently from struct/union fields, and that is harder to
1062 patch up, but luckily we shouldn't need to. (If there are
1063 any enumeration members, we can tell for sure it's an enum
1066 if (type_code
== TYPE_CODE_UNDEF
)
1067 if (nfields
> 1 && max_value
== 0)
1068 type_code
= TYPE_CODE_UNION
;
1070 type_code
= TYPE_CODE_STRUCT
;
1072 /* Create a new type or use the pending type. */
1073 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1074 if (pend
== (struct mdebug_pending
*) NULL
)
1076 t
= new_type (NULL
);
1077 add_pending (cur_fdr
, ext_sh
, t
);
1082 /* Do not set the tag name if it is a compiler generated tag name
1083 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1084 Alpha cc puts out an sh->iss of zero for those. */
1085 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1086 TYPE_TAG_NAME (t
) = NULL
;
1088 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1091 TYPE_CODE (t
) = type_code
;
1092 TYPE_LENGTH (t
) = sh
->value
;
1093 TYPE_NFIELDS (t
) = nfields
;
1094 TYPE_FIELDS (t
) = f
= ((struct field
*)
1096 nfields
* sizeof (struct field
)));
1098 if (type_code
== TYPE_CODE_ENUM
)
1100 int unsigned_enum
= 1;
1102 /* This is a non-empty enum. */
1104 /* DEC c89 has the number of enumerators in the sh.value field,
1105 not the type length, so we have to compensate for that
1106 incompatibility quirk.
1107 This might do the wrong thing for an enum with one or two
1108 enumerators and gcc -gcoff -fshort-enums, but these cases
1109 are hopefully rare enough.
1110 Alpha cc -migrate has a sh.value field of zero, we adjust
1112 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1113 || TYPE_LENGTH (t
) == 0)
1114 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1115 for (ext_tsym
= ext_sh
+ external_sym_size
;
1117 ext_tsym
+= external_sym_size
)
1120 struct symbol
*enum_sym
;
1122 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1124 if (tsym
.st
!= stMember
)
1127 f
->bitpos
= tsym
.value
;
1129 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1132 enum_sym
= ((struct symbol
*)
1133 obstack_alloc (¤t_objfile
->symbol_obstack
,
1134 sizeof (struct symbol
)));
1135 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1136 SYMBOL_NAME (enum_sym
) =
1137 obsavestring (f
->name
, strlen (f
->name
),
1138 ¤t_objfile
->symbol_obstack
);
1139 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1140 SYMBOL_TYPE (enum_sym
) = t
;
1141 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1142 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1143 if (SYMBOL_VALUE (enum_sym
) < 0)
1145 add_symbol (enum_sym
, top_stack
->cur_block
);
1147 /* Skip the stMembers that we've handled. */
1152 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1154 /* make this the current type */
1155 top_stack
->cur_type
= t
;
1156 top_stack
->cur_field
= 0;
1158 /* Do not create a symbol for alpha cc unnamed structs. */
1162 /* gcc puts out an empty struct for an opaque struct definitions,
1163 do not create a symbol for it either. */
1164 if (TYPE_NFIELDS (t
) == 0)
1166 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1170 s
= new_symbol (name
);
1171 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1172 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1173 SYMBOL_VALUE (s
) = 0;
1174 SYMBOL_TYPE (s
) = t
;
1175 add_symbol (s
, top_stack
->cur_block
);
1178 /* End of local variables shared by struct, union, enum, and
1179 block (as yet unknown struct/union/enum) processing. */
1183 found_ecoff_debugging_info
= 1;
1184 /* beginnning of (code) block. Value of symbol
1185 is the displacement from procedure start */
1186 push_parse_stack ();
1188 /* Do not start a new block if this is the outermost block of a
1189 procedure. This allows the LOC_BLOCK symbol to point to the
1190 block with the local variables, so funcname::var works. */
1191 if (top_stack
->blocktype
== stProc
1192 || top_stack
->blocktype
== stStaticProc
)
1194 top_stack
->blocktype
= stNil
;
1198 top_stack
->blocktype
= stBlock
;
1199 b
= new_block (top_stack
->maxsyms
);
1200 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1201 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1202 top_stack
->cur_block
= b
;
1203 add_block (b
, top_stack
->cur_st
);
1206 case stEnd
: /* end (of anything) */
1207 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
1209 /* Finished with type */
1210 top_stack
->cur_type
= 0;
1212 else if (sh
->sc
== scText
&&
1213 (top_stack
->blocktype
== stProc
||
1214 top_stack
->blocktype
== stStaticProc
))
1216 /* Finished with procedure */
1217 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1218 struct mips_extra_func_info
*e
;
1220 struct type
*ftype
= top_stack
->cur_type
;
1223 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1225 /* Make up special symbol to contain procedure specific info */
1226 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1227 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1228 SYMBOL_CLASS (s
) = LOC_CONST
;
1229 SYMBOL_TYPE (s
) = mdebug_type_void
;
1230 e
= ((struct mips_extra_func_info
*)
1231 obstack_alloc (¤t_objfile
->symbol_obstack
,
1232 sizeof (struct mips_extra_func_info
)));
1233 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
1234 SYMBOL_VALUE (s
) = (long) e
;
1235 e
->numargs
= top_stack
->numargs
;
1236 e
->pdr
.framereg
= -1;
1237 add_symbol (s
, top_stack
->cur_block
);
1239 /* Reallocate symbols, saving memory */
1240 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1242 /* f77 emits proc-level with address bounds==[0,0],
1243 So look for such child blocks, and patch them. */
1244 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1246 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1247 if (BLOCK_SUPERBLOCK (b_bad
) == b
1248 && BLOCK_START (b_bad
) == top_stack
->procadr
1249 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1251 BLOCK_START (b_bad
) = BLOCK_START (b
);
1252 BLOCK_END (b_bad
) = BLOCK_END (b
);
1256 if (TYPE_NFIELDS (ftype
) <= 0)
1258 /* No parameter type information is recorded with the function's
1259 type. Set that from the type of the parameter symbols. */
1260 int nparams
= top_stack
->numargs
;
1266 TYPE_NFIELDS (ftype
) = nparams
;
1267 TYPE_FIELDS (ftype
) = (struct field
*)
1268 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1270 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1272 sym
= BLOCK_SYM (b
, i
);
1273 switch (SYMBOL_CLASS (sym
))
1278 case LOC_REGPARM_ADDR
:
1279 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1289 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1291 /* End of (code) block. The value of the symbol is the
1292 displacement from the procedure`s start address of the
1293 end of this block. */
1294 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1295 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1297 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1299 /* End of outermost block. Pop parse stack and ignore. The
1300 following stEnd of stProc will take care of the block. */
1303 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1305 /* End of file. Pop parse stack and ignore. Higher
1306 level code deals with this. */
1310 complain (&stEnd_complaint
, sh
->sc
);
1312 pop_parse_stack (); /* restore previous lexical context */
1315 case stMember
: /* member of struct or union */
1316 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1318 f
->bitpos
= sh
->value
;
1320 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1321 f
->bitsize
= bitsize
;
1324 case stIndirect
: /* forward declaration on Irix5 */
1325 /* Forward declarations from Irix5 cc are handled by cross_ref,
1329 case stTypedef
: /* type definition */
1330 found_ecoff_debugging_info
= 1;
1332 /* Typedefs for forward declarations and opaque structs from alpha cc
1333 are handled by cross_ref, skip them. */
1337 /* Parse the type or use the pending type. */
1338 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1339 if (pend
== (struct mdebug_pending
*) NULL
)
1341 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1342 add_pending (cur_fdr
, ext_sh
, t
);
1347 /* mips cc puts out a typedef with the name of the struct for forward
1348 declarations. These should not go into the symbol table and
1349 TYPE_NAME should not be set for them.
1350 They can't be distinguished from an intentional typedef to
1351 the same name however:
1353 struct x { int ix; int jx; };
1357 struct xx {int ixx; int jxx; };
1358 generates a cross referencing stTypedef for x and xx.
1359 The user visible effect of this is that the type of a pointer
1360 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1361 The problem is fixed with alpha cc and Irix5 cc. */
1363 /* However if the typedef cross references to an opaque aggregate, it
1364 is safe to omit it from the symbol table. */
1366 if (has_opaque_xref (cur_fdr
, sh
))
1368 s
= new_symbol (name
);
1369 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1370 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1371 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1372 SYMBOL_TYPE (s
) = t
;
1373 add_symbol (s
, top_stack
->cur_block
);
1375 /* Incomplete definitions of structs should not get a name. */
1376 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1377 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1378 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1379 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1381 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1382 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1384 /* If we are giving a name to a type such as "pointer to
1385 foo" or "function returning foo", we better not set
1386 the TYPE_NAME. If the program contains "typedef char
1387 *caddr_t;", we don't want all variables of type char
1388 * to print as caddr_t. This is not just a
1389 consequence of GDB's type management; CC and GCC (at
1390 least through version 2.4) both output variables of
1391 either type char * or caddr_t with the type
1392 refering to the stTypedef symbol for caddr_t. If a future
1393 compiler cleans this up it GDB is not ready for it
1394 yet, but if it becomes ready we somehow need to
1395 disable this check (without breaking the PCC/GCC2.4
1400 Fortunately, this check seems not to be necessary
1401 for anything except pointers or functions. */
1404 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1408 case stFile
: /* file name */
1409 push_parse_stack ();
1410 top_stack
->blocktype
= sh
->st
;
1413 /* I`ve never seen these for C */
1415 break; /* register relocation */
1417 break; /* forwarding address */
1419 break; /* constant */
1421 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1428 /* Parse the type information provided in the raw AX entries for
1429 the symbol SH. Return the bitfield size in BS, in case.
1430 We must byte-swap the AX entries before we use them; BIGEND says whether
1431 they are big-endian or little-endian (from fh->fBigendian). */
1433 static struct type
*
1434 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1437 unsigned int aux_index
;
1442 /* Null entries in this map are treated specially */
1443 static struct type
**map_bt
[] =
1445 &mdebug_type_void
, /* btNil */
1446 &mdebug_type_adr_32
, /* btAdr */
1447 &mdebug_type_char
, /* btChar */
1448 &mdebug_type_unsigned_char
, /* btUChar */
1449 &mdebug_type_short
, /* btShort */
1450 &mdebug_type_unsigned_short
, /* btUShort */
1451 &mdebug_type_int_32
, /* btInt */
1452 &mdebug_type_unsigned_int_32
, /* btUInt */
1453 &mdebug_type_long_32
, /* btLong */
1454 &mdebug_type_unsigned_long_32
, /* btULong */
1455 &mdebug_type_float
, /* btFloat */
1456 &mdebug_type_double
, /* btDouble */
1463 &mdebug_type_complex
, /* btComplex */
1464 &mdebug_type_double_complex
, /* btDComplex */
1466 &mdebug_type_fixed_dec
, /* btFixedDec */
1467 &mdebug_type_float_dec
, /* btFloatDec */
1468 &mdebug_type_string
, /* btString */
1471 &mdebug_type_void
, /* btVoid */
1472 0, /* DEC C++: Pointer to member */
1473 0, /* DEC C++: Virtual function table */
1474 0, /* DEC C++: Class (Record) */
1475 &mdebug_type_long_64
, /* btLong64 */
1476 &mdebug_type_unsigned_long_64
, /* btULong64 */
1477 &mdebug_type_long_long_64
, /* btLongLong64 */
1478 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1479 &mdebug_type_adr_64
, /* btAdr64 */
1480 &mdebug_type_int_64
, /* btInt64 */
1481 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1485 struct type
*tp
= 0;
1486 enum type_code type_code
= TYPE_CODE_UNDEF
;
1488 /* Handle undefined types, they have indexNil. */
1489 if (aux_index
== indexNil
)
1490 return mdebug_type_int
;
1492 /* Handle corrupt aux indices. */
1493 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1495 complain (&index_complaint
, sym_name
);
1496 return mdebug_type_int
;
1500 /* Use aux as a type information record, map its basic type. */
1501 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1502 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1504 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1505 return mdebug_type_int
;
1509 tp
= *map_bt
[t
->bt
];
1514 /* Cannot use builtin types -- build our own */
1518 type_code
= TYPE_CODE_STRUCT
;
1521 type_code
= TYPE_CODE_UNION
;
1524 type_code
= TYPE_CODE_ENUM
;
1527 type_code
= TYPE_CODE_RANGE
;
1530 type_code
= TYPE_CODE_SET
;
1533 /* alpha cc -migrate uses this for typedefs. The true type will
1534 be obtained by crossreferencing below. */
1535 type_code
= TYPE_CODE_ERROR
;
1538 /* alpha cc uses this for typedefs. The true type will be
1539 obtained by crossreferencing below. */
1540 type_code
= TYPE_CODE_ERROR
;
1543 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1544 return mdebug_type_int
;
1548 /* Move on to next aux */
1553 int width
= AUX_GET_WIDTH (bigend
, ax
);
1555 /* Inhibit core dumps with some cfront generated objects that
1557 if (bs
== (int *)NULL
)
1559 /* Alpha cc -migrate encodes char and unsigned char types
1560 as short and unsigned short types with a field width of 8.
1561 Enum types also have a field width which we ignore for now. */
1562 if (t
->bt
== btShort
&& width
== 8)
1563 tp
= mdebug_type_char
;
1564 else if (t
->bt
== btUShort
&& width
== 8)
1565 tp
= mdebug_type_unsigned_char
;
1566 else if (t
->bt
== btEnum
)
1569 complain (&bad_fbitfield_complaint
, sym_name
);
1576 /* A btIndirect entry cross references to an aux entry containing
1578 if (t
->bt
== btIndirect
)
1585 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1587 if (rn
->rfd
== 0xfff)
1589 rf
= AUX_GET_ISYM (bigend
, ax
);
1597 complain (&bad_indirect_xref_complaint
, sym_name
);
1598 return mdebug_type_int
;
1600 xref_fh
= get_rfd (fd
, rf
);
1601 xref_fd
= xref_fh
- debug_info
->fdr
;
1602 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1603 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1606 /* All these types really point to some (common) MIPS type
1607 definition, and only the type-qualifiers fully identify
1608 them. We'll make the same effort at sharing. */
1609 if (t
->bt
== btStruct
||
1613 /* btSet (I think) implies that the name is a tag name, not a typedef
1614 name. This apparently is a MIPS extension for C sets. */
1619 /* Try to cross reference this type, build new type on failure. */
1620 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1621 if (tp
== (struct type
*) NULL
)
1622 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1624 /* DEC c89 produces cross references to qualified aggregate types,
1625 dereference them. */
1626 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1627 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1628 tp
= tp
->target_type
;
1630 /* Make sure that TYPE_CODE(tp) has an expected type code.
1631 Any type may be returned from cross_ref if file indirect entries
1633 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1634 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1635 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1637 complain (&unexpected_type_code_complaint
, sym_name
);
1642 /* Usually, TYPE_CODE(tp) is already type_code. The main
1643 exception is if we guessed wrong re struct/union/enum.
1644 But for struct vs. union a wrong guess is harmless, so
1645 don't complain(). */
1646 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1647 && type_code
!= TYPE_CODE_ENUM
)
1648 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1649 && type_code
== TYPE_CODE_ENUM
))
1651 complain (&bad_tag_guess_complaint
, sym_name
);
1654 if (TYPE_CODE (tp
) != type_code
)
1656 TYPE_CODE (tp
) = type_code
;
1659 /* Do not set the tag name if it is a compiler generated tag name
1660 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1661 if (name
[0] == '.' || name
[0] == '\0')
1662 TYPE_TAG_NAME (tp
) = NULL
;
1663 else if (TYPE_TAG_NAME (tp
) == NULL
1664 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1665 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1666 ¤t_objfile
->type_obstack
);
1670 /* All these types really point to some (common) MIPS type
1671 definition, and only the type-qualifiers fully identify
1672 them. We'll make the same effort at sharing.
1673 FIXME: We are not doing any guessing on range types. */
1674 if (t
->bt
== btRange
)
1678 /* Try to cross reference this type, build new type on failure. */
1679 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1680 if (tp
== (struct type
*) NULL
)
1681 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1683 /* Make sure that TYPE_CODE(tp) has an expected type code.
1684 Any type may be returned from cross_ref if file indirect entries
1686 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1688 complain (&unexpected_type_code_complaint
, sym_name
);
1692 /* Usually, TYPE_CODE(tp) is already type_code. The main
1693 exception is if we guessed wrong re struct/union/enum. */
1694 if (TYPE_CODE (tp
) != type_code
)
1696 complain (&bad_tag_guess_complaint
, sym_name
);
1697 TYPE_CODE (tp
) = type_code
;
1699 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1700 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1701 ¤t_objfile
->type_obstack
);
1704 if (t
->bt
== btTypedef
)
1708 /* Try to cross reference this type, it should succeed. */
1709 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1710 if (tp
== (struct type
*) NULL
)
1712 complain (&unable_to_cross_ref_complaint
, sym_name
);
1713 tp
= mdebug_type_int
;
1717 /* Deal with range types */
1718 if (t
->bt
== btRange
)
1720 TYPE_NFIELDS (tp
) = 2;
1721 TYPE_FIELDS (tp
) = ((struct field
*)
1722 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1723 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1724 ¤t_objfile
->type_obstack
);
1725 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1727 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1728 ¤t_objfile
->type_obstack
);
1729 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1733 /* Parse all the type qualifiers now. If there are more
1734 than 6 the game will continue in the next aux */
1738 #define PARSE_TQ(tq) \
1739 if (t->tq != tqNil) \
1740 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1752 /* mips cc 2.x and gcc never put out continued aux entries. */
1756 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1760 /* Complain for illegal continuations due to corrupt aux entries. */
1762 complain (&bad_continued_complaint
, sym_name
);
1767 /* Make up a complex type from a basic one. Type is passed by
1768 reference in TPP and side-effected as necessary. The type
1769 qualifier TQ says how to handle the aux symbols at AX for
1770 the symbol SX we are currently analyzing. BIGEND says whether
1771 aux symbols are big-endian or little-endian.
1772 Returns the number of aux symbols we parsed. */
1775 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1786 /* Used in array processing */
1797 t
= lookup_pointer_type (*tpp
);
1802 t
= lookup_function_type (*tpp
);
1809 /* Determine and record the domain type (type of index) */
1810 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1816 rf
= AUX_GET_ISYM (bigend
, ax
);
1819 fh
= get_rfd (fd
, rf
);
1821 indx
= parse_type (fh
- debug_info
->fdr
,
1822 debug_info
->external_aux
+ fh
->iauxBase
,
1823 id
, (int *) NULL
, bigend
, sym_name
);
1825 /* The bounds type should be an integer type, but might be anything
1826 else due to corrupt aux entries. */
1827 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1829 complain (&array_index_type_complaint
, sym_name
);
1830 indx
= mdebug_type_int
;
1833 /* Get the bounds, and create the array type. */
1835 lower
= AUX_GET_DNLOW (bigend
, ax
);
1837 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1839 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1841 range
= create_range_type ((struct type
*) NULL
, indx
,
1844 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1846 /* We used to fill in the supplied array element bitsize
1847 here if the TYPE_LENGTH of the target type was zero.
1848 This happens for a `pointer to an array of anonymous structs',
1849 but in this case the array element bitsize is also zero,
1850 so nothing is gained.
1851 And we used to check the TYPE_LENGTH of the target type against
1852 the supplied array element bitsize.
1853 gcc causes a mismatch for `pointer to array of object',
1854 since the sdb directives it uses do not have a way of
1855 specifying the bitsize, but it does no harm (the
1856 TYPE_LENGTH should be correct) and we should be able to
1857 ignore the erroneous bitsize from the auxiliary entry safely.
1858 dbx seems to ignore it too. */
1860 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1862 if (TYPE_LENGTH (*tpp
) == 0)
1864 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1871 /* Volatile -- currently ignored */
1875 /* Const -- currently ignored */
1879 complain (&unknown_type_qual_complaint
, tq
);
1885 /* Parse a procedure descriptor record PR. Note that the procedure is
1886 parsed _after_ the local symbols, now we just insert the extra
1887 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1888 already been placed in the procedure's main block. Note also that
1889 images that have been partially stripped (ld -x) have been deprived
1890 of local symbols, and we have to cope with them here. FIRST_OFF is
1891 the offset of the first procedure for this FDR; we adjust the
1892 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1893 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1894 in question, or NULL to use top_stack->cur_block. */
1896 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, CORE_ADDR
,
1897 struct partial_symtab
*));
1900 parse_procedure (pr
, search_symtab
, lowest_pdr_addr
, pst
)
1902 struct symtab
*search_symtab
;
1903 CORE_ADDR lowest_pdr_addr
;
1904 struct partial_symtab
*pst
;
1906 struct symbol
*s
, *i
;
1908 struct mips_extra_func_info
*e
;
1911 /* Simple rule to find files linked "-x" */
1912 if (cur_fdr
->rss
== -1)
1916 /* Static procedure at address pr->adr. Sigh. */
1917 /* FIXME-32x64. assuming pr->adr fits in long. */
1918 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1926 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1927 ((char *) debug_info
->external_ext
1929 * debug_swap
->external_ext_size
)),
1931 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1939 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1940 ((char *) debug_info
->external_sym
1941 + ((cur_fdr
->isymBase
+ pr
->isym
)
1942 * debug_swap
->external_sym_size
)),
1944 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1947 if (search_symtab
!= NULL
)
1950 /* This loses both in the case mentioned (want a static, find a global),
1951 but also if we are looking up a non-mangled name which happens to
1952 match the name of a mangled function. */
1953 /* We have to save the cur_fdr across the call to lookup_symbol.
1954 If the pdr is for a static function and if a global function with
1955 the same name exists, lookup_symbol will eventually read in the symtab
1956 for the global function and clobber cur_fdr. */
1957 FDR
*save_cur_fdr
= cur_fdr
;
1958 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1959 cur_fdr
= save_cur_fdr
;
1963 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1969 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1970 VAR_NAMESPACE
, LOC_BLOCK
);
1974 b
= SYMBOL_BLOCK_VALUE (s
);
1978 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1982 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1983 s
= new_symbol (sh_name
);
1984 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1985 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1986 /* Donno its type, hope int is ok */
1987 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1988 add_symbol (s
, top_stack
->cur_block
);
1989 /* Wont have symbols for this one */
1991 SYMBOL_BLOCK_VALUE (s
) = b
;
1992 BLOCK_FUNCTION (b
) = s
;
1993 BLOCK_START (b
) = pr
->adr
;
1994 /* BOUND used to be the end of procedure's text, but the
1995 argument is no longer passed in. */
1996 BLOCK_END (b
) = bound
;
1997 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1998 add_block (b
, top_stack
->cur_st
);
2002 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
2006 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
2008 e
->pdr
.isym
= (long) s
;
2009 e
->pdr
.adr
+= pst
->textlow
- lowest_pdr_addr
;
2011 /* Correct incorrect setjmp procedure descriptor from the library
2012 to make backtrace through setjmp work. */
2013 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
2015 complain (&bad_setjmp_pdr_complaint
, 0);
2016 e
->pdr
.pcreg
= RA_REGNUM
;
2017 e
->pdr
.regmask
= 0x80000000;
2018 e
->pdr
.regoffset
= -4;
2022 /* It would be reasonable that functions that have been compiled
2023 without debugging info have a btNil type for their return value,
2024 and functions that are void and are compiled with debugging info
2026 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2027 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2029 The glevel field in cur_fdr could be used to determine the presence
2030 of debugging info, but GCC doesn't always pass the -g switch settings
2031 to the assembler and GAS doesn't set the glevel field from the -g switch
2033 To work around these problems, the return value type of a TYPE_CODE_VOID
2034 function is adjusted accordingly if no debugging info was found in the
2035 compilation unit. */
2037 if (processing_gcc_compilation
== 0
2038 && found_ecoff_debugging_info
== 0
2039 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2040 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2043 /* Relocate the extra function info pointed to by the symbol table. */
2046 ecoff_relocate_efi (sym
, delta
)
2050 struct mips_extra_func_info
*e
;
2052 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2054 e
->pdr
.adr
+= delta
;
2057 /* Parse the external symbol ES. Just call parse_symbol() after
2058 making sure we know where the aux are for it.
2059 BIGEND says whether aux entries are big-endian or little-endian.
2061 This routine clobbers top_stack->cur_block and ->cur_st. */
2063 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
2066 parse_external (es
, bigend
, section_offsets
)
2069 struct section_offsets
*section_offsets
;
2073 if (es
->ifd
!= ifdNil
)
2076 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2077 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2081 cur_fdr
= debug_info
->fdr
;
2085 /* Reading .o files */
2086 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scSUndefined
2087 || es
->asym
.sc
== scNil
)
2090 switch (es
->asym
.st
)
2093 /* These are generated for static symbols in .o files,
2114 /* FIXME: Turn this into a complaint? */
2116 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2117 what
, debug_info
->ssext
+ es
->asym
.iss
,
2118 fdr_name (cur_fdr
));
2122 switch (es
->asym
.st
)
2126 /* There is no need to parse the external procedure symbols.
2127 If they are from objects compiled without -g, their index will
2128 be indexNil, and the symbol definition from the minimal symbol
2129 is preferrable (yielding a function returning int instead of int).
2130 If the index points to a local procedure symbol, the local
2131 symbol already provides the correct type.
2132 Note that the index of the external procedure symbol points
2133 to the local procedure symbol in the local symbol table, and
2134 _not_ to the auxiliary symbol info. */
2138 /* Global common symbols are resolved by the runtime loader,
2140 if (es
->asym
.sc
== scCommon
|| es
->asym
.sc
== scSCommon
)
2143 /* Note that the case of a symbol with indexNil must be handled
2144 anyways by parse_symbol(). */
2145 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
2152 /* Parse the line number info for file descriptor FH into
2153 GDB's linetable LT. MIPS' encoding requires a little bit
2154 of magic to get things out. Note also that MIPS' line
2155 numbers can go back and forth, apparently we can live
2156 with that and do not need to reorder our linetables */
2158 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
2159 struct partial_symtab
*, CORE_ADDR
));
2162 parse_lines (fh
, pr
, lt
, maxlines
, pst
, lowest_pdr_addr
)
2165 struct linetable
*lt
;
2167 struct partial_symtab
*pst
;
2168 CORE_ADDR lowest_pdr_addr
;
2170 unsigned char *base
;
2172 int delta
, count
, lineno
= 0;
2174 if (fh
->cbLine
== 0)
2177 /* Scan by procedure descriptors */
2179 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2183 unsigned char *halt
;
2185 /* No code for this one */
2186 if (pr
->iline
== ilineNil
||
2187 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2190 /* Determine start and end address of compressed line bytes for
2192 base
= debug_info
->line
+ fh
->cbLineOffset
;
2193 if (j
!= (fh
->cpd
- 1))
2194 halt
= base
+ pr
[1].cbLineOffset
;
2196 halt
= base
+ fh
->cbLine
;
2197 base
+= pr
->cbLineOffset
;
2199 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2201 l
= adr
>> 2; /* in words */
2202 for (lineno
= pr
->lnLow
; base
< halt
; )
2204 count
= *base
& 0x0f;
2205 delta
= *base
++ >> 4;
2210 delta
= (base
[0] << 8) | base
[1];
2211 if (delta
>= 0x8000)
2215 lineno
+= delta
; /* first delta is 0 */
2217 /* Complain if the line table overflows. Could happen
2218 with corrupt binaries. */
2219 if (lt
->nitems
>= maxlines
)
2221 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2224 k
= add_line (lt
, lineno
, l
, k
);
2230 /* Master parsing procedure for first-pass reading of file symbols
2231 into a partial_symtab. */
2234 parse_partial_symbols (objfile
, section_offsets
)
2235 struct objfile
*objfile
;
2236 struct section_offsets
*section_offsets
;
2238 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2239 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2240 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2241 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2242 = debug_swap
->swap_ext_in
;
2243 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2244 = debug_swap
->swap_sym_in
;
2245 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2246 = debug_swap
->swap_rfd_in
;
2248 HDRR
*hdr
= &debug_info
->symbolic_header
;
2249 /* Running pointers */
2254 register EXTR
*ext_in
;
2257 struct partial_symtab
*pst
;
2258 int textlow_not_set
= 1;
2259 int past_first_source_file
= 0;
2261 /* List of current psymtab's include files */
2262 char **psymtab_include_list
;
2263 int includes_allocated
;
2266 struct pst_map
*fdr_to_pst
;
2267 /* Index within current psymtab dependency list */
2268 struct partial_symtab
**dependency_list
;
2269 int dependencies_used
, dependencies_allocated
;
2270 struct cleanup
*old_chain
;
2272 enum language prev_language
;
2273 asection
*text_sect
;
2274 int relocatable
= 0;
2276 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2277 the shared libraries are prelinked at a high memory address.
2278 We have to adjust the start address of the object file for this case,
2279 by setting it to the start address of the first procedure in the file.
2280 But we should do no adjustments if we are debugging a .o file, where
2281 the text section (and fh->adr) really starts at zero. */
2282 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2283 if (text_sect
!= NULL
2284 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2287 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2288 sizeof (EXTR
) * hdr
->iextMax
);
2290 includes_allocated
= 30;
2292 psymtab_include_list
= (char **) alloca (includes_allocated
*
2294 next_symbol_text_func
= mdebug_next_symbol_text
;
2296 dependencies_allocated
= 30;
2297 dependencies_used
= 0;
2299 (struct partial_symtab
**) alloca (dependencies_allocated
*
2300 sizeof (struct partial_symtab
*));
2302 last_source_file
= NULL
;
2307 * Only parse the Local and External symbols, and the Relative FDR.
2308 * Fixup enough of the loader symtab to be able to use it.
2309 * Allocate space only for the file's portions we need to
2314 max_glevel
= MIN_GLEVEL
;
2316 /* Allocate the map FDR -> PST.
2317 Minor hack: -O3 images might claim some global data belongs
2318 to FDR -1. We`ll go along with that */
2319 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2320 old_chain
= make_cleanup (free
, fdr_to_pst
);
2323 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2324 fdr_to_pst
[-1].pst
= pst
;
2328 /* Allocate the global pending list. */
2330 ((struct mdebug_pending
**)
2331 obstack_alloc (&objfile
->psymbol_obstack
,
2332 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2333 memset ((PTR
) pending_list
, 0,
2334 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2336 /* Pass 0 over external syms: swap them in. */
2337 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2338 make_cleanup (free
, ext_block
);
2340 ext_out
= (char *) debug_info
->external_ext
;
2341 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2343 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2344 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2346 /* Pass 1 over external syms: Presize and partition the list */
2348 ext_in_end
= ext_in
+ hdr
->iextMax
;
2349 for (; ext_in
< ext_in_end
; ext_in
++)
2351 /* See calls to complain below. */
2352 if (ext_in
->ifd
>= -1
2353 && ext_in
->ifd
< hdr
->ifdMax
2354 && ext_in
->asym
.iss
>= 0
2355 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2356 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2359 /* Pass 1.5 over files: partition out global symbol space */
2361 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2363 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2364 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2365 fdr_to_pst
[f_idx
].n_globals
= 0;
2368 /* Pass 2 over external syms: fill in external symbols */
2370 ext_in_end
= ext_in
+ hdr
->iextMax
;
2371 for (; ext_in
< ext_in_end
; ext_in
++)
2373 enum minimal_symbol_type ms_type
= mst_text
;
2374 CORE_ADDR svalue
= ext_in
->asym
.value
;
2376 /* The Irix 5 native tools seem to sometimes generate bogus
2377 external symbols. */
2378 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2380 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2383 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2385 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2390 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2391 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2393 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scSUndefined
2394 || ext_in
->asym
.sc
== scNil
)
2397 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2398 switch (ext_in
->asym
.st
)
2401 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2404 ms_type
= mst_file_text
;
2405 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2408 if (ext_in
->asym
.sc
== scCommon
|| ext_in
->asym
.sc
== scSCommon
)
2410 /* The value of a common symbol is its size, not its address.
2414 else if (ext_in
->asym
.sc
== scData
2415 || ext_in
->asym
.sc
== scSData
2416 || ext_in
->asym
.sc
== scRData
2417 || ext_in
->asym
.sc
== scPData
2418 || ext_in
->asym
.sc
== scXData
)
2421 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2426 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2430 if (ext_in
->asym
.sc
== scAbs
)
2432 else if (ext_in
->asym
.sc
== scText
2433 || ext_in
->asym
.sc
== scInit
2434 || ext_in
->asym
.sc
== scFini
)
2436 ms_type
= mst_file_text
;
2437 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2439 else if (ext_in
->asym
.sc
== scData
2440 || ext_in
->asym
.sc
== scSData
2441 || ext_in
->asym
.sc
== scRData
2442 || ext_in
->asym
.sc
== scPData
2443 || ext_in
->asym
.sc
== scXData
)
2445 ms_type
= mst_file_data
;
2446 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2450 ms_type
= mst_file_bss
;
2451 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2456 /* The alpha has the section start addresses in stLocal symbols
2457 whose name starts with a `.'. Skip those but complain for all
2458 other stLocal symbols.
2459 Irix6 puts the section start addresses in stNil symbols, skip
2465 ms_type
= mst_unknown
;
2466 complain (&unknown_ext_complaint
, name
);
2468 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2471 /* Pass 3 over files, over local syms: fill in static symbols */
2472 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2474 struct partial_symtab
*save_pst
;
2478 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2482 fdr_to_pst
[f_idx
].pst
= NULL
;
2486 /* Determine the start address for this object file from the
2487 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2491 if (relocatable
|| textlow
!= 0)
2492 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2496 pst
= start_psymtab_common (objfile
, section_offsets
,
2499 objfile
->global_psymbols
.next
,
2500 objfile
->static_psymbols
.next
);
2501 pst
->read_symtab_private
= ((char *)
2502 obstack_alloc (&objfile
->psymbol_obstack
,
2503 sizeof (struct symloc
)));
2504 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2507 FDR_IDX (pst
) = f_idx
;
2508 CUR_BFD (pst
) = cur_bfd
;
2509 DEBUG_SWAP (pst
) = debug_swap
;
2510 DEBUG_INFO (pst
) = debug_info
;
2511 PENDING_LIST (pst
) = pending_list
;
2513 /* The way to turn this into a symtab is to call... */
2514 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2516 /* Set up language for the pst.
2517 The language from the FDR is used if it is unambigious (e.g. cfront
2518 with native cc and g++ will set the language to C).
2519 Otherwise we have to deduce the language from the filename.
2520 Native ecoff has every header file in a separate FDR, so
2521 deduce_language_from_filename will return language_unknown for
2522 a header file, which is not what we want.
2523 But the FDRs for the header files are after the FDR for the source
2524 file, so we can assign the language of the source file to the
2525 following header files. Then we save the language in the private
2526 pst data so that we can reuse it when building symtabs. */
2527 prev_language
= psymtab_language
;
2531 case langCplusplusV2
:
2532 psymtab_language
= language_cplus
;
2535 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2538 if (psymtab_language
== language_unknown
)
2539 psymtab_language
= prev_language
;
2540 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2542 pst
->texthigh
= pst
->textlow
;
2544 /* For stabs-in-ecoff files, the second symbol must be @stab.
2545 This symbol is emitted by mips-tfile to signal that the
2546 current object file uses encapsulated stabs instead of mips
2547 ecoff for local symbols. (It is the second symbol because
2548 the first symbol is the stFile used to signal the start of a
2550 processing_gcc_compilation
= 0;
2553 (*swap_sym_in
) (cur_bfd
,
2554 ((char *) debug_info
->external_sym
2555 + (fh
->isymBase
+ 1) * external_sym_size
),
2557 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2558 processing_gcc_compilation
= 2;
2561 if (processing_gcc_compilation
!= 0)
2563 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2568 (*swap_sym_in
) (cur_bfd
,
2569 (((char *) debug_info
->external_sym
)
2570 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2572 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2573 if (!ECOFF_IS_STAB (&sh
))
2575 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2580 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2581 if (sh
.st
== stStaticProc
)
2583 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2584 prim_record_minimal_symbol_and_info (namestring
,
2592 procaddr
= sh
.value
;
2594 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2595 (debug_info
->external_aux
2598 (*swap_sym_in
) (cur_bfd
,
2599 ((char *) debug_info
->external_sym
2600 + ((fh
->isymBase
+ isym
- 1)
2601 * external_sym_size
)),
2605 CORE_ADDR high
= procaddr
+ sh
.value
;
2607 /* Kludge for Irix 5.2 zero fh->adr. */
2609 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2610 pst
->textlow
= procaddr
;
2611 if (high
> pst
->texthigh
)
2612 pst
->texthigh
= high
;
2615 else if (sh
.st
== stStatic
)
2630 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2631 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2632 prim_record_minimal_symbol_and_info (namestring
,
2642 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2643 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2644 prim_record_minimal_symbol_and_info (namestring
,
2656 #define SET_NAMESTRING() \
2657 namestring = debug_info->ss + fh->issBase + sh.iss
2658 #define CUR_SYMBOL_TYPE type_code
2659 #define CUR_SYMBOL_VALUE sh.value
2660 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2662 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) (void)0
2663 #define HANDLE_RBRAC(val) \
2664 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2665 #include "partial-stab.h"
2670 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2673 enum address_class
class;
2675 (*swap_sym_in
) (cur_bfd
,
2676 ((char *) debug_info
->external_sym
2677 + ((fh
->isymBase
+ cur_sdx
)
2678 * external_sym_size
)),
2681 if (ECOFF_IS_STAB (&sh
))
2687 /* Non absolute static symbols go into the minimal table. */
2688 if (sh
.sc
== scUndefined
|| sh
.sc
== scSUndefined
2690 || (sh
.index
== indexNil
2691 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2693 /* FIXME, premature? */
2698 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2704 /* The value of a stEnd symbol is the displacement from the
2705 corresponding start symbol value, do not relocate it. */
2707 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2714 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2718 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2729 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2730 mst_file_text
, NULL
,
2731 SECT_OFF_TEXT
, NULL
,
2737 /* Usually there is a local and a global stProc symbol
2738 for a function. This means that the function name
2739 has already been entered into the mimimal symbol table
2740 while processing the global symbols in pass 2 above.
2741 One notable exception is the PROGRAM name from
2742 f77 compiled executables, it is only put out as
2743 local stProc symbol, and a global MAIN__ stProc symbol
2744 points to it. It doesn't matter though, as gdb is
2745 still able to find the PROGRAM name via the partial
2746 symbol table, and the MAIN__ symbol via the minimal
2748 if (sh
.st
== stProc
)
2749 add_psymbol_to_list (name
, strlen (name
),
2750 VAR_NAMESPACE
, LOC_BLOCK
,
2751 &objfile
->global_psymbols
,
2752 0, sh
.value
, psymtab_language
, objfile
);
2754 add_psymbol_to_list (name
, strlen (name
),
2755 VAR_NAMESPACE
, LOC_BLOCK
,
2756 &objfile
->static_psymbols
,
2757 0, sh
.value
, psymtab_language
, objfile
);
2759 /* Skip over procedure to next one. */
2760 if (sh
.index
>= hdr
->iauxMax
)
2762 /* Should not happen, but does when cross-compiling
2763 with the MIPS compiler. FIXME -- pull later. */
2764 complain (&index_complaint
, name
);
2765 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2768 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2769 (debug_info
->external_aux
2772 procaddr
= sh
.value
;
2774 if (new_sdx
<= cur_sdx
)
2776 /* This should not happen either... FIXME. */
2777 complain (&aux_index_complaint
, name
);
2778 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2782 (*swap_sym_in
) (cur_bfd
,
2783 ((char *) debug_info
->external_sym
2784 + ((fh
->isymBase
+ cur_sdx
- 1)
2785 * external_sym_size
)),
2790 /* Kludge for Irix 5.2 zero fh->adr. */
2792 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2793 pst
->textlow
= procaddr
;
2795 high
= procaddr
+ sh
.value
;
2796 if (high
> pst
->texthigh
)
2797 pst
->texthigh
= high
;
2800 case stStatic
: /* Variable */
2805 || sh
.sc
== scXData
)
2806 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2807 mst_file_data
, NULL
,
2812 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2820 case stIndirect
:/* Irix5 forward declaration */
2821 /* Skip forward declarations from Irix5 cc */
2824 case stTypedef
:/* Typedef */
2825 /* Skip typedefs for forward declarations and opaque
2826 structs from alpha and mips cc. */
2827 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2829 class = LOC_TYPEDEF
;
2832 case stConstant
: /* Constant decl */
2839 case stBlock
: /* { }, str, un, enum*/
2840 /* Do not create a partial symbol for cc unnamed aggregates
2841 and gcc empty aggregates. */
2842 if ((sh
.sc
== scInfo
2843 || sh
.sc
== scCommon
|| sh
.sc
== scSCommon
)
2845 && sh
.index
!= cur_sdx
+ 2)
2847 add_psymbol_to_list (name
, strlen (name
),
2848 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2849 &objfile
->static_psymbols
,
2851 psymtab_language
, objfile
);
2853 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
2855 /* Skip over the block */
2857 if (new_sdx
<= cur_sdx
)
2859 /* This happens with the Ultrix kernel. */
2860 complain (&block_index_complaint
, name
);
2861 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2866 case stFile
: /* File headers */
2867 case stLabel
: /* Labels */
2868 case stEnd
: /* Ends of files */
2871 case stLocal
: /* Local variables */
2872 /* Normally these are skipped because we skip over
2873 all blocks we see. However, these can occur
2874 as visible symbols in a .h file that contains code. */
2878 /* Both complaints are valid: one gives symbol name,
2879 the other the offending symbol type. */
2880 complain (&unknown_sym_complaint
, name
);
2881 complain (&unknown_st_complaint
, sh
.st
);
2885 /* Use this gdb symbol */
2886 add_psymbol_to_list (name
, strlen (name
),
2887 VAR_NAMESPACE
, class,
2888 &objfile
->static_psymbols
,
2889 0, sh
.value
, psymtab_language
, objfile
);
2891 cur_sdx
++; /* Go to next file symbol */
2894 /* Now do enter the external symbols. */
2895 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2896 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2897 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2898 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2899 for (; --cur_sdx
>= 0; ext_ptr
++)
2901 enum address_class
class;
2906 if (ext_ptr
->ifd
!= f_idx
)
2908 psh
= &ext_ptr
->asym
;
2910 /* Do not add undefined symbols to the partial symbol table. */
2911 if (psh
->sc
== scUndefined
|| psh
->sc
== scSUndefined
2912 || psh
->sc
== scNil
)
2915 svalue
= psh
->value
;
2920 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2927 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2931 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2938 /* These are generated for static symbols in .o files,
2943 /* External procedure symbols have been entered
2944 into the minimal symbol table in pass 2 above.
2945 Ignore them, as parse_external will ignore them too. */
2951 complain (&unknown_ext_complaint
,
2952 debug_info
->ssext
+ psh
->iss
);
2953 /* Fall through, pretend it's global. */
2955 /* Global common symbols are resolved by the runtime loader,
2957 if (psh
->sc
== scCommon
|| psh
->sc
== scSCommon
)
2963 name
= debug_info
->ssext
+ psh
->iss
;
2964 add_psymbol_to_list (name
, strlen (name
),
2965 VAR_NAMESPACE
, class,
2966 &objfile
->global_psymbols
,
2968 psymtab_language
, objfile
);
2972 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2973 empty and put on the free list. */
2974 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2975 psymtab_include_list
, includes_used
,
2976 -1, save_pst
->texthigh
,
2977 dependency_list
, dependencies_used
, textlow_not_set
);
2979 dependencies_used
= 0;
2981 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2982 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2984 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2985 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2988 /* The objfile has its functions reordered if this partial symbol
2989 table overlaps any other partial symbol table.
2990 We cannot assume a reordered objfile if a partial symbol table
2991 is contained within another partial symbol table, as partial symbol
2992 tables for include files with executable code are contained
2993 within the partial symbol table for the including source file,
2994 and we do not want to flag the objfile reordered for these cases.
2996 This strategy works well for Irix-5.2 shared libraries, but we
2997 might have to use a more elaborate (and slower) algorithm for
2999 save_pst
= fdr_to_pst
[f_idx
].pst
;
3000 if (save_pst
!= NULL
3001 && save_pst
->textlow
!= 0
3002 && !(objfile
->flags
& OBJF_REORDERED
))
3004 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3007 && save_pst
->textlow
>= pst
->textlow
3008 && save_pst
->textlow
< pst
->texthigh
3009 && save_pst
->texthigh
> pst
->texthigh
)
3011 objfile
->flags
|= OBJF_REORDERED
;
3018 /* Now scan the FDRs for dependencies */
3019 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3021 fh
= f_idx
+ debug_info
->fdr
;
3022 pst
= fdr_to_pst
[f_idx
].pst
;
3024 if (pst
== (struct partial_symtab
*)NULL
)
3027 /* This should catch stabs-in-ecoff. */
3031 /* Skip the first file indirect entry as it is a self dependency
3032 for source files or a reverse .h -> .c dependency for header files. */
3033 pst
->number_of_dependencies
= 0;
3035 ((struct partial_symtab
**)
3036 obstack_alloc (&objfile
->psymbol_obstack
,
3038 * sizeof (struct partial_symtab
*))));
3039 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3043 (*swap_rfd_in
) (cur_bfd
,
3044 ((char *) debug_info
->external_rfd
3045 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3047 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3049 complain (&bad_file_number_complaint
, rh
);
3053 /* Skip self dependencies of header files. */
3057 /* Do not add to dependeny list if psymtab was empty. */
3058 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
3060 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3064 /* Remove the dummy psymtab created for -O3 images above, if it is
3065 still empty, to enable the detection of stripped executables. */
3066 if (objfile
->psymtabs
->next
== NULL
3067 && objfile
->psymtabs
->number_of_dependencies
== 0
3068 && objfile
->psymtabs
->n_global_syms
== 0
3069 && objfile
->psymtabs
->n_static_syms
== 0)
3070 objfile
->psymtabs
= NULL
;
3071 do_cleanups (old_chain
);
3074 /* If the current psymbol has an enumerated type, we need to add
3075 all the the enum constants to the partial symbol table. */
3078 handle_psymbol_enumerators (objfile
, fh
, stype
, svalue
)
3079 struct objfile
*objfile
;
3084 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3085 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
3086 = debug_swap
->swap_sym_in
;
3087 char *ext_sym
= ((char *) debug_info
->external_sym
3088 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3098 /* It is an enumerated type if the next symbol entry is a stMember
3099 and its auxiliary index is indexNil or its auxiliary entry
3100 is a plain btNil or btVoid.
3101 Alpha cc -migrate enums are recognized by a zero index and
3102 a zero symbol value. */
3103 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3104 if (sh
.st
!= stMember
)
3107 if (sh
.index
== indexNil
3108 || (sh
.index
== 0 && svalue
== 0))
3110 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3111 &(debug_info
->external_aux
3112 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3114 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
3126 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3127 if (sh
.st
!= stMember
)
3129 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3131 /* Note that the value doesn't matter for enum constants
3132 in psymtabs, just in symtabs. */
3133 add_psymbol_to_list (name
, strlen (name
),
3134 VAR_NAMESPACE
, LOC_CONST
,
3135 &objfile
->static_psymbols
, 0,
3136 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3137 ext_sym
+= external_sym_size
;
3142 mdebug_next_symbol_text (objfile
)
3143 struct objfile
*objfile
; /* argument objfile is currently unused */
3148 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3149 ((char *) debug_info
->external_sym
3150 + ((cur_fdr
->isymBase
+ cur_sdx
)
3151 * debug_swap
->external_sym_size
)),
3153 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3156 /* Ancillary function to psymtab_to_symtab(). Does all the work
3157 for turning the partial symtab PST into a symtab, recurring
3158 first on all dependent psymtabs. The argument FILENAME is
3159 only passed so we can see in debug stack traces what file
3162 This function has a split personality, based on whether the
3163 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3164 The flow of control and even the memory allocation differs. FIXME. */
3167 psymtab_to_symtab_1 (pst
, filename
)
3168 struct partial_symtab
*pst
;
3171 bfd_size_type external_sym_size
;
3172 bfd_size_type external_pdr_size
;
3173 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
3174 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
3178 struct linetable
*lines
;
3179 CORE_ADDR lowest_pdr_addr
= 0;
3185 /* Read in all partial symbtabs on which this one is dependent.
3186 NOTE that we do have circular dependencies, sigh. We solved
3187 that by setting pst->readin before this point. */
3189 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3190 if (!pst
->dependencies
[i
]->readin
)
3192 /* Inform about additional files to be read in. */
3195 fputs_filtered (" ", gdb_stdout
);
3197 fputs_filtered ("and ", gdb_stdout
);
3199 printf_filtered ("%s...",
3200 pst
->dependencies
[i
]->filename
);
3201 wrap_here (""); /* Flush output */
3202 gdb_flush (gdb_stdout
);
3204 /* We only pass the filename for debug purposes */
3205 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3206 pst
->dependencies
[i
]->filename
);
3209 /* Do nothing if this is a dummy psymtab. */
3211 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3212 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3215 /* Now read the symbols for this symtab */
3217 cur_bfd
= CUR_BFD (pst
);
3218 debug_swap
= DEBUG_SWAP (pst
);
3219 debug_info
= DEBUG_INFO (pst
);
3220 pending_list
= PENDING_LIST (pst
);
3221 external_sym_size
= debug_swap
->external_sym_size
;
3222 external_pdr_size
= debug_swap
->external_pdr_size
;
3223 swap_sym_in
= debug_swap
->swap_sym_in
;
3224 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3225 current_objfile
= pst
->objfile
;
3226 cur_fd
= FDR_IDX (pst
);
3227 fh
= ((cur_fd
== -1)
3229 : debug_info
->fdr
+ cur_fd
);
3232 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3233 processing_gcc_compilation
= 0;
3234 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3238 (*swap_sym_in
) (cur_bfd
,
3239 ((char *) debug_info
->external_sym
3240 + (fh
->isymBase
+ 1) * external_sym_size
),
3242 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3245 /* We indicate that this is a GCC compilation so that certain
3246 features will be enabled in stabsread/dbxread. */
3247 processing_gcc_compilation
= 2;
3251 if (processing_gcc_compilation
!= 0)
3254 /* This symbol table contains stabs-in-ecoff entries. */
3256 /* Parse local symbols first */
3258 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3260 current_objfile
= NULL
;
3263 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3269 (*swap_sym_in
) (cur_bfd
,
3270 (((char *) debug_info
->external_sym
)
3271 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3273 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3275 if (ECOFF_IS_STAB (&sh
))
3277 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3279 /* We should never get non N_STAB symbols here, but they
3280 should be harmless, so keep process_one_symbol from
3281 complaining about them. */
3282 if (type_code
& N_STAB
)
3284 process_one_symbol (type_code
, 0, valu
, name
,
3285 pst
->section_offsets
, pst
->objfile
);
3287 if (type_code
== N_FUN
)
3289 /* Make up special symbol to contain
3290 procedure specific info */
3291 struct mips_extra_func_info
*e
=
3292 ((struct mips_extra_func_info
*)
3293 obstack_alloc (¤t_objfile
->symbol_obstack
,
3294 sizeof (struct mips_extra_func_info
)));
3295 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3297 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3298 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3299 SYMBOL_CLASS (s
) = LOC_CONST
;
3300 SYMBOL_TYPE (s
) = mdebug_type_void
;
3301 SYMBOL_VALUE (s
) = (long) e
;
3302 e
->pdr
.framereg
= -1;
3303 add_symbol_to_list (s
, &local_symbols
);
3306 else if (sh
.st
== stLabel
)
3308 if (sh
.index
== indexNil
)
3310 /* This is what the gcc2_compiled and __gnu_compiled_*
3311 show up as. So don't complain. */
3316 /* Handle encoded stab line number. */
3317 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT
);
3318 record_line (current_subfile
, sh
.index
, valu
);
3321 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3322 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3323 /* These are generated by gcc-2.x, do not complain */
3326 complain (&stab_unknown_complaint
, name
);
3328 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT
);
3331 /* Sort the symbol table now, we are done adding symbols to it.
3332 We must do this before parse_procedure calls lookup_symbol. */
3333 sort_symtab_syms (st
);
3335 /* There used to be a call to sort_blocks here, but this should not
3336 be necessary for stabs symtabs. And as sort_blocks modifies the
3337 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3338 it did the wrong thing if the first procedure in a file was
3339 generated via asm statements. */
3341 /* Fill in procedure info next. */
3345 struct cleanup
*old_chain
;
3351 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3352 old_chain
= make_cleanup (free
, pr_block
);
3354 pdr_ptr
= ((char *) debug_info
->external_pdr
3355 + fh
->ipdFirst
* external_pdr_size
);
3356 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3360 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3362 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3364 /* Determine lowest PDR address, the PDRs are not always
3366 if (pdr_in
== pr_block
)
3367 lowest_pdr_addr
= pdr_in
->adr
;
3368 else if (pdr_in
->adr
< lowest_pdr_addr
)
3369 lowest_pdr_addr
= pdr_in
->adr
;
3373 pdr_in_end
= pdr_in
+ fh
->cpd
;
3374 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3375 parse_procedure (pdr_in
, st
, lowest_pdr_addr
, pst
);
3377 do_cleanups (old_chain
);
3382 /* This symbol table contains ordinary ecoff entries. */
3388 /* How many symbols will we need */
3389 /* FIXME, this does not count enum values. */
3390 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3394 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3398 f_max
+= fh
->csym
+ fh
->cpd
;
3399 maxlines
= 2 * fh
->cline
;
3400 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3402 /* The proper language was already determined when building
3403 the psymtab, use it. */
3404 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3407 psymtab_language
= st
->language
;
3409 lines
= LINETABLE (st
);
3411 /* Get a new lexical context */
3413 push_parse_stack ();
3414 top_stack
->cur_st
= st
;
3415 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3417 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3418 BLOCK_END (top_stack
->cur_block
) = 0;
3419 top_stack
->blocktype
= stFile
;
3420 top_stack
->maxsyms
= 2 * f_max
;
3421 top_stack
->cur_type
= 0;
3422 top_stack
->procadr
= 0;
3423 top_stack
->numargs
= 0;
3424 found_ecoff_debugging_info
= 0;
3431 /* Parse local symbols first */
3432 sym_ptr
= ((char *) debug_info
->external_sym
3433 + fh
->isymBase
* external_sym_size
);
3434 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3435 while (sym_ptr
< sym_end
)
3440 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3441 c
= parse_symbol (&sh
,
3442 debug_info
->external_aux
+ fh
->iauxBase
,
3443 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3444 sym_ptr
+= c
* external_sym_size
;
3447 /* Linenumbers. At the end, check if we can save memory.
3448 parse_lines has to look ahead an arbitrary number of PDR
3449 structures, so we swap them all first. */
3453 struct cleanup
*old_chain
;
3459 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3461 old_chain
= make_cleanup (free
, pr_block
);
3463 pdr_ptr
= ((char *) debug_info
->external_pdr
3464 + fh
->ipdFirst
* external_pdr_size
);
3465 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3469 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3471 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3473 /* Determine lowest PDR address, the PDRs are not always
3475 if (pdr_in
== pr_block
)
3476 lowest_pdr_addr
= pdr_in
->adr
;
3477 else if (pdr_in
->adr
< lowest_pdr_addr
)
3478 lowest_pdr_addr
= pdr_in
->adr
;
3481 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
3482 if (lines
->nitems
< fh
->cline
)
3483 lines
= shrink_linetable (lines
);
3485 /* Fill in procedure info next. */
3487 pdr_in_end
= pdr_in
+ fh
->cpd
;
3488 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3489 parse_procedure (pdr_in
, 0, lowest_pdr_addr
, pst
);
3491 do_cleanups (old_chain
);
3495 LINETABLE (st
) = lines
;
3497 /* .. and our share of externals.
3498 XXX use the global list to speed up things here. how?
3499 FIXME, Maybe quit once we have found the right number of ext's? */
3500 top_stack
->cur_st
= st
;
3501 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3503 top_stack
->blocktype
= stFile
;
3505 = (debug_info
->symbolic_header
.isymMax
3506 + debug_info
->symbolic_header
.ipdMax
3507 + debug_info
->symbolic_header
.iextMax
);
3509 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3510 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3511 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3513 /* If there are undefined symbols, tell the user.
3514 The alpha has an undefined symbol for every symbol that is
3515 from a shared library, so tell the user only if verbose is on. */
3516 if (info_verbose
&& n_undef_symbols
)
3518 printf_filtered ("File %s contains %d unresolved references:",
3519 st
->filename
, n_undef_symbols
);
3520 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3521 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3522 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3529 /* Sort the symbol table now, we are done adding symbols to it.*/
3530 sort_symtab_syms (st
);
3535 /* Now link the psymtab and the symtab. */
3538 current_objfile
= NULL
;
3541 /* Ancillary parsing procedures. */
3543 /* Return 1 if the symbol pointed to by SH has a cross reference
3544 to an opaque aggregate type, else 0. */
3547 has_opaque_xref (fh
, sh
)
3556 if (sh
->index
== indexNil
)
3559 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3560 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3561 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3565 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3566 if (rn
->rfd
== 0xfff)
3567 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3575 /* Lookup the type at relative index RN. Return it in TPP
3576 if found and in any event come up with its name PNAME.
3577 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3578 Return value says how many aux symbols we ate. */
3581 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3585 enum type_code type_code
; /* Use to alloc new type if none is found. */
3597 struct mdebug_pending
*pend
;
3599 *tpp
= (struct type
*)NULL
;
3601 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3603 /* Escape index means 'the next one' */
3604 if (rn
->rfd
== 0xfff)
3607 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3614 /* mips cc uses a rf of -1 for opaque struct definitions.
3615 Set TYPE_FLAG_STUB for these types so that check_typedef will
3616 resolve them if the struct gets defined in another compilation unit. */
3619 *pname
= "<undefined>";
3620 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3621 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3625 /* mips cc uses an escaped rn->index of 0 for struct return types
3626 of procedures that were compiled without -g. These will always remain
3628 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3630 *pname
= "<undefined>";
3634 /* Find the relative file descriptor and the symbol in it. */
3635 fh
= get_rfd (fd
, rf
);
3636 xref_fd
= fh
- debug_info
->fdr
;
3638 if (rn
->index
>= fh
->csym
)
3640 /* File indirect entry is corrupt. */
3641 *pname
= "<illegal>";
3642 complain (&bad_rfd_entry_complaint
,
3643 sym_name
, xref_fd
, rn
->index
);
3647 /* If we have processed this symbol then we left a forwarding
3648 pointer to the type in the pending list. If not, we`ll put
3649 it in a list of pending types, to be processed later when
3650 the file will be. In any event, we collect the name for the
3653 esh
= ((char *) debug_info
->external_sym
3654 + ((fh
->isymBase
+ rn
->index
)
3655 * debug_swap
->external_sym_size
));
3656 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3658 /* Make sure that this type of cross reference can be handled. */
3659 if ((sh
.sc
!= scInfo
3660 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3661 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3662 && sh
.st
!= stEnum
))
3663 && (sh
.st
!= stBlock
|| (sh
.sc
!= scCommon
&& sh
.sc
!= scSCommon
)))
3665 /* File indirect entry is corrupt. */
3666 *pname
= "<illegal>";
3667 complain (&bad_rfd_entry_complaint
,
3668 sym_name
, xref_fd
, rn
->index
);
3672 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3674 pend
= is_pending_symbol (fh
, esh
);
3679 /* We have not yet seen this type. */
3681 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3685 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3687 a) forward declarations of structs/unions/enums which are not
3688 defined in this compilation unit.
3689 For these the type will be void. This is a bad design decision
3690 as cross referencing across compilation units is impossible
3691 due to the missing name.
3692 b) forward declarations of structs/unions/enums/typedefs which
3693 are defined later in this file or in another file in the same
3694 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3695 Simply cross reference those again to get the true type.
3696 The forward references are not entered in the pending list and
3697 in the symbol table. */
3699 (*debug_swap
->swap_tir_in
) (bigend
,
3700 &(debug_info
->external_aux
3701 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3703 if (tir
.tq0
!= tqNil
)
3704 complain (&illegal_forward_tq0_complaint
, sym_name
);
3708 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3710 *pname
= "<undefined>";
3717 (debug_info
->external_aux
3718 + fh
->iauxBase
+ sh
.index
+ 1),
3719 tpp
, type_code
, pname
,
3720 fh
->fBigendian
, sym_name
);
3724 /* Follow a forward typedef. This might recursively
3725 call cross_ref till we get a non typedef'ed type.
3726 FIXME: This is not correct behaviour, but gdb currently
3727 cannot handle typedefs without type copying. Type
3728 copying is impossible as we might have mutual forward
3729 references between two files and the copied type would not
3730 get filled in when we later parse its definition. */
3731 *tpp
= parse_type (xref_fd
,
3732 debug_info
->external_aux
+ fh
->iauxBase
,
3736 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3737 add_pending (fh
, esh
, *tpp
);
3741 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3742 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3748 else if (sh
.st
== stTypedef
)
3750 /* Parse the type for a normal typedef. This might recursively call
3751 cross_ref till we get a non typedef'ed type.
3752 FIXME: This is not correct behaviour, but gdb currently
3753 cannot handle typedefs without type copying. But type copying is
3754 impossible as we might have mutual forward references between
3755 two files and the copied type would not get filled in when
3756 we later parse its definition. */
3757 *tpp
= parse_type (xref_fd
,
3758 debug_info
->external_aux
+ fh
->iauxBase
,
3762 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3766 /* Cross reference to a struct/union/enum which is defined
3767 in another file in the same compilation unit but that file
3768 has not been parsed yet.
3769 Initialize the type only, it will be filled in when
3770 it's definition is parsed. */
3771 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3773 add_pending (fh
, esh
, *tpp
);
3776 /* We used one auxent normally, two if we got a "next one" rf. */
3781 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3782 keeping the symtab sorted */
3784 static struct symbol
*
3785 mylookup_symbol (name
, block
, namespace, class)
3787 register struct block
*block
;
3788 namespace_enum
namespace;
3789 enum address_class
class;
3791 register int bot
, top
, inc
;
3792 register struct symbol
*sym
;
3795 top
= BLOCK_NSYMS (block
);
3799 sym
= BLOCK_SYM (block
, bot
);
3800 if (SYMBOL_NAME (sym
)[0] == inc
3801 && SYMBOL_NAMESPACE (sym
) == namespace
3802 && SYMBOL_CLASS (sym
) == class
3803 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3807 block
= BLOCK_SUPERBLOCK (block
);
3809 return mylookup_symbol (name
, block
, namespace, class);
3814 /* Add a new symbol S to a block B.
3815 Infrequently, we will need to reallocate the block to make it bigger.
3816 We only detect this case when adding to top_stack->cur_block, since
3817 that's the only time we know how big the block is. FIXME. */
3824 int nsyms
= BLOCK_NSYMS (b
)++;
3825 struct block
*origb
;
3826 struct parse_stack
*stackp
;
3828 if (b
== top_stack
->cur_block
&&
3829 nsyms
>= top_stack
->maxsyms
)
3831 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3832 /* In this case shrink_block is actually grow_block, since
3833 BLOCK_NSYMS(b) is larger than its current size. */
3835 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3837 /* Now run through the stack replacing pointers to the
3838 original block. shrink_block has already done this
3839 for the blockvector and BLOCK_FUNCTION. */
3840 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3842 if (stackp
->cur_block
== origb
)
3844 stackp
->cur_block
= b
;
3845 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3849 BLOCK_SYM (b
, nsyms
) = s
;
3852 /* Add a new block B to a symtab S */
3859 struct blockvector
*bv
= BLOCKVECTOR (s
);
3861 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3862 (sizeof (struct blockvector
)
3863 + BLOCKVECTOR_NBLOCKS (bv
)
3864 * sizeof (bv
->block
)));
3865 if (bv
!= BLOCKVECTOR (s
))
3866 BLOCKVECTOR (s
) = bv
;
3868 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3871 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3872 MIPS' linenumber encoding might need more than one byte
3873 to describe it, LAST is used to detect these continuation lines.
3875 Combining lines with the same line number seems like a bad idea.
3876 E.g: There could be a line number entry with the same line number after the
3877 prologue and GDB should not ignore it (this is a better way to find
3878 a prologue than mips_skip_prologue).
3879 But due to the compressed line table format there are line number entries
3880 for the same line which are needed to bridge the gap to the next
3881 line number entry. These entries have a bogus address info with them
3882 and we are unable to tell them from intended duplicate line number
3884 This is another reason why -ggdb debugging format is preferable. */
3887 add_line (lt
, lineno
, adr
, last
)
3888 struct linetable
*lt
;
3893 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3894 Change them to something sensible. */
3898 last
= -2; /* make sure we record first line */
3900 if (last
== lineno
) /* skip continuation lines */
3903 lt
->item
[lt
->nitems
].line
= lineno
;
3904 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3908 /* Sorting and reordering procedures */
3910 /* Blocks with a smaller low bound should come first */
3913 compare_blocks (arg1
, arg2
)
3917 register int addr_diff
;
3918 struct block
**b1
= (struct block
**) arg1
;
3919 struct block
**b2
= (struct block
**) arg2
;
3921 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3923 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3927 /* Sort the blocks of a symtab S.
3928 Reorder the blocks in the blockvector by code-address,
3929 as required by some MI search routines */
3935 struct blockvector
*bv
= BLOCKVECTOR (s
);
3937 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3940 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3941 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3942 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3943 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3947 * This is very unfortunate: normally all functions are compiled in
3948 * the order they are found, but if the file is compiled -O3 things
3949 * are very different. It would be nice to find a reliable test
3950 * to detect -O3 images in advance.
3952 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3953 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3954 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3955 sizeof (struct block
*),
3959 register CORE_ADDR high
= 0;
3960 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3962 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3963 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3964 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3965 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3968 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3969 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3971 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3972 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3973 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3974 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3978 /* Constructor/restructor/destructor procedures */
3980 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3981 MAXSYMS and linenumbers MAXLINES we'll put in it */
3983 static struct symtab
*
3984 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3988 struct objfile
*objfile
;
3990 struct symtab
*s
= allocate_symtab (name
, objfile
);
3992 LINETABLE (s
) = new_linetable (maxlines
);
3994 /* All symtabs must have at least two blocks */
3995 BLOCKVECTOR (s
) = new_bvect (2);
3996 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3997 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3998 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3999 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4001 s
->free_code
= free_linetable
;
4006 /* Allocate a new partial_symtab NAME */
4008 static struct partial_symtab
*
4009 new_psymtab (name
, objfile
, section_offsets
)
4011 struct objfile
*objfile
;
4012 struct section_offsets
*section_offsets
;
4014 struct partial_symtab
*psymtab
;
4016 psymtab
= allocate_psymtab (name
, objfile
);
4017 psymtab
->section_offsets
= section_offsets
;
4019 /* Keep a backpointer to the file's symbols */
4021 psymtab
->read_symtab_private
= ((char *)
4022 obstack_alloc (&objfile
->psymbol_obstack
,
4023 sizeof (struct symloc
)));
4024 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4025 CUR_BFD (psymtab
) = cur_bfd
;
4026 DEBUG_SWAP (psymtab
) = debug_swap
;
4027 DEBUG_INFO (psymtab
) = debug_info
;
4028 PENDING_LIST (psymtab
) = pending_list
;
4030 /* The way to turn this into a symtab is to call... */
4031 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4036 /* Allocate a linetable array of the given SIZE. Since the struct
4037 already includes one item, we subtract one when calculating the
4038 proper size to allocate. */
4040 static struct linetable
*
4041 new_linetable (size
)
4044 struct linetable
*l
;
4046 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4047 l
= (struct linetable
*) xmalloc (size
);
4052 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4053 I am not so sure about the 3.4 ones.
4055 Since the struct linetable already includes one item, we subtract one when
4056 calculating the proper size to allocate. */
4058 static struct linetable
*
4059 shrink_linetable (lt
)
4060 struct linetable
*lt
;
4063 return (struct linetable
*) xrealloc ((PTR
) lt
,
4064 (sizeof (struct linetable
)
4066 * sizeof (lt
->item
))));
4069 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4071 static struct blockvector
*
4075 struct blockvector
*bv
;
4078 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4079 bv
= (struct blockvector
*) xzalloc (size
);
4081 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4086 /* Allocate and zero a new block of MAXSYMS symbols */
4088 static struct block
*
4092 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4094 return (struct block
*) xzalloc (size
);
4097 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4098 Shrink_block can also be used by add_symbol to grow a block. */
4100 static struct block
*
4106 struct blockvector
*bv
= BLOCKVECTOR (s
);
4109 /* Just reallocate it and fix references to the old one */
4111 new = (struct block
*) xrealloc ((PTR
) b
,
4112 (sizeof (struct block
)
4113 + ((BLOCK_NSYMS (b
) - 1)
4114 * sizeof (struct symbol
*))));
4116 /* Should chase pointers to old one. Fortunately, that`s just
4117 the block`s function and inferior blocks */
4118 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4119 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4120 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4121 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4122 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4123 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4124 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4128 /* Create a new symbol with printname NAME */
4130 static struct symbol
*
4134 struct symbol
*s
= ((struct symbol
*)
4135 obstack_alloc (¤t_objfile
->symbol_obstack
,
4136 sizeof (struct symbol
)));
4138 memset ((PTR
) s
, 0, sizeof (*s
));
4139 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4140 ¤t_objfile
->symbol_obstack
);
4141 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4142 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4146 /* Create a new type with printname NAME */
4148 static struct type
*
4154 t
= alloc_type (current_objfile
);
4155 TYPE_NAME (t
) = name
;
4156 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4160 /* Read ECOFF debugging information from a BFD section. This is
4161 called from elfread.c. It parses the section into a
4162 ecoff_debug_info struct, and then lets the rest of the file handle
4166 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
4167 struct objfile
*objfile
;
4168 const struct ecoff_debug_swap
*swap
;
4170 struct section_offsets
*section_offsets
;
4172 bfd
*abfd
= objfile
->obfd
;
4173 struct ecoff_debug_info
*info
;
4175 info
= ((struct ecoff_debug_info
*)
4176 obstack_alloc (&objfile
->psymbol_obstack
,
4177 sizeof (struct ecoff_debug_info
)));
4179 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4180 error ("Error reading ECOFF debugging information: %s",
4181 bfd_errmsg (bfd_get_error ()));
4183 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
4187 /* Things used for calling functions in the inferior.
4188 These functions are exported to our companion
4189 mips-tdep.c file and are here because they play
4190 with the symbol-table explicitly. */
4192 /* Sigtramp: make sure we have all the necessary information
4193 about the signal trampoline code. Since the official code
4194 from MIPS does not do so, we make up that information ourselves.
4195 If they fix the library (unlikely) this code will neutralize itself. */
4197 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4198 here because it calls functions defined in this file, but perhaps
4199 this could be handled in a better way. Only compile it in when
4200 tm-mips.h is included. */
4209 struct block
*b
, *b0
= NULL
;
4211 sigtramp_address
= -1;
4213 /* We have to handle the following cases here:
4214 a) The Mips library has a sigtramp label within sigvec.
4215 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4216 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4219 b0
= SYMBOL_BLOCK_VALUE (s
);
4220 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4224 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4225 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4228 /* But maybe this program uses its own version of sigvec */
4232 /* Did we or MIPSco fix the library ? */
4233 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4235 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4236 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4240 sigtramp_address
= SYMBOL_VALUE (s
);
4241 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4243 /* But what symtab does it live in ? */
4244 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4247 * Ok, there goes the fix: turn it into a procedure, with all the
4248 * needed info. Note we make it a nested procedure of sigvec,
4249 * which is the way the (assembly) code is actually written.
4251 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4252 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4253 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4255 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4257 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4259 SYMBOL_BLOCK_VALUE (s
) = b
;
4260 BLOCK_START (b
) = sigtramp_address
;
4261 BLOCK_END (b
) = sigtramp_end
;
4262 BLOCK_FUNCTION (b
) = s
;
4263 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4267 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4269 struct mips_extra_func_info
*e
=
4270 ((struct mips_extra_func_info
*)
4271 xzalloc (sizeof (struct mips_extra_func_info
)));
4273 e
->numargs
= 0; /* the kernel thinks otherwise */
4274 e
->pdr
.frameoffset
= 32;
4275 e
->pdr
.framereg
= SP_REGNUM
;
4276 /* Note that setting pcreg is no longer strictly necessary as
4277 mips_frame_saved_pc is now aware of signal handler frames. */
4278 e
->pdr
.pcreg
= PC_REGNUM
;
4279 e
->pdr
.regmask
= -2;
4280 /* Offset to saved r31, in the sigtramp case the saved registers
4281 are above the frame in the sigcontext.
4282 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4283 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4284 and 32 * 4 bytes for the floating point registers. */
4285 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4286 e
->pdr
.fregmask
= -1;
4287 /* Offset to saved f30 (first saved *double* register). */
4288 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4289 e
->pdr
.isym
= (long) s
;
4290 e
->pdr
.adr
= sigtramp_address
;
4292 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4293 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4294 SYMBOL_VALUE (s
) = (long) e
;
4295 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4296 SYMBOL_CLASS (s
) = LOC_CONST
;
4297 SYMBOL_TYPE (s
) = mdebug_type_void
;
4298 current_objfile
= NULL
;
4301 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4304 #endif /* TM_MIPS_H */
4307 _initialize_mdebugread ()
4310 init_type (TYPE_CODE_VOID
, 1,
4312 "void", (struct objfile
*) NULL
);
4314 init_type (TYPE_CODE_INT
, 1,
4316 "char", (struct objfile
*) NULL
);
4317 mdebug_type_unsigned_char
=
4318 init_type (TYPE_CODE_INT
, 1,
4320 "unsigned char", (struct objfile
*) NULL
);
4322 init_type (TYPE_CODE_INT
, 2,
4324 "short", (struct objfile
*) NULL
);
4325 mdebug_type_unsigned_short
=
4326 init_type (TYPE_CODE_INT
, 2,
4328 "unsigned short", (struct objfile
*) NULL
);
4329 mdebug_type_int_32
=
4330 init_type (TYPE_CODE_INT
, 4,
4332 "int", (struct objfile
*) NULL
);
4333 mdebug_type_unsigned_int_32
=
4334 init_type (TYPE_CODE_INT
, 4,
4336 "unsigned int", (struct objfile
*) NULL
);
4337 mdebug_type_int_64
=
4338 init_type (TYPE_CODE_INT
, 8,
4340 "int", (struct objfile
*) NULL
);
4341 mdebug_type_unsigned_int_64
=
4342 init_type (TYPE_CODE_INT
, 8,
4344 "unsigned int", (struct objfile
*) NULL
);
4345 mdebug_type_long_32
=
4346 init_type (TYPE_CODE_INT
, 4,
4348 "long", (struct objfile
*) NULL
);
4349 mdebug_type_unsigned_long_32
=
4350 init_type (TYPE_CODE_INT
, 4,
4352 "unsigned long", (struct objfile
*) NULL
);
4353 mdebug_type_long_64
=
4354 init_type (TYPE_CODE_INT
, 8,
4356 "long", (struct objfile
*) NULL
);
4357 mdebug_type_unsigned_long_64
=
4358 init_type (TYPE_CODE_INT
, 8,
4360 "unsigned long", (struct objfile
*) NULL
);
4361 mdebug_type_long_long_64
=
4362 init_type (TYPE_CODE_INT
, 8,
4364 "long long", (struct objfile
*) NULL
);
4365 mdebug_type_unsigned_long_long_64
=
4366 init_type (TYPE_CODE_INT
, 8,
4368 "unsigned long long", (struct objfile
*) NULL
);
4369 mdebug_type_adr_32
=
4370 init_type (TYPE_CODE_PTR
, 4,
4372 "adr_32", (struct objfile
*) NULL
);
4373 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4374 mdebug_type_adr_64
=
4375 init_type (TYPE_CODE_PTR
, 8,
4377 "adr_64", (struct objfile
*) NULL
);
4378 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4380 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4382 "float", (struct objfile
*) NULL
);
4383 mdebug_type_double
=
4384 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4386 "double", (struct objfile
*) NULL
);
4387 mdebug_type_complex
=
4388 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4390 "complex", (struct objfile
*) NULL
);
4391 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4392 mdebug_type_double_complex
=
4393 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4395 "double complex", (struct objfile
*) NULL
);
4396 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4398 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4400 mdebug_type_string
=
4401 init_type (TYPE_CODE_STRING
,
4402 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4404 (struct objfile
*) NULL
);
4406 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4407 good? Would we be better off with TYPE_CODE_ERROR? Should
4408 TYPE_CODE_ERROR print things in hex if it knows the size? */
4409 mdebug_type_fixed_dec
=
4410 init_type (TYPE_CODE_INT
,
4411 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4413 (struct objfile
*) NULL
);
4415 mdebug_type_float_dec
=
4416 init_type (TYPE_CODE_ERROR
,
4417 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4418 0, "floating decimal",
4419 (struct objfile
*) NULL
);
4421 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4422 "<function, no debug info>", NULL
);
4423 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4424 nodebug_var_symbol_type
=
4425 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4426 "<variable, no debug info>", NULL
);