1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994
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., 675 Mass Ave, Cambridge, MA 02139, 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"
53 #if !defined (SEEK_SET)
58 /* These are needed if the tm.h file does not contain the necessary
59 mips specific definitions. */
61 #ifndef MIPS_EFI_SYMBOL_NAME
62 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
64 #include "coff/symconst.h"
65 typedef struct mips_extra_func_info
{
68 } *mips_extra_func_info_t
;
75 #include <sys/types.h>
78 #include <sys/param.h>
83 #include "gdb-stabs.h"
87 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
89 #include "libaout.h" /* Private BFD a.out information. */
90 #include "aout/aout64.h"
91 #include "aout/stab_gnu.h" /* STABS information */
93 #include "expression.h"
94 #include "language.h" /* Needed inside partial-stab.h */
96 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
97 #ifndef ECOFF_REG_TO_REGNUM
98 #define ECOFF_REG_TO_REGNUM(num) (num)
101 /* Each partial symbol table entry contains a pointer to private data
102 for the read_symtab() function to use when expanding a partial
103 symbol table entry to a full symbol table entry.
105 For mdebugread this structure contains the index of the FDR that this
106 psymtab represents and a pointer to the BFD that the psymtab was
109 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
110 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
111 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
112 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
113 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
114 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
120 const struct ecoff_debug_swap
*debug_swap
;
121 struct ecoff_debug_info
*debug_info
;
122 struct mdebug_pending
**pending_list
;
123 EXTR
*extern_tab
; /* Pointer to external symbols for this file. */
124 int extern_count
; /* Size of extern_tab. */
125 enum language pst_language
;
128 /* Things we import explicitly from other modules */
130 extern int info_verbose
;
132 /* Various complaints about symbol reading that don't abort the process */
134 static struct complaint bad_file_number_complaint
=
135 {"bad file number %d", 0, 0};
137 static struct complaint index_complaint
=
138 {"bad aux index at symbol %s", 0, 0};
140 static struct complaint aux_index_complaint
=
141 {"bad proc end in aux found from symbol %s", 0, 0};
143 static struct complaint block_index_complaint
=
144 {"bad aux index at block symbol %s", 0, 0};
146 static struct complaint unknown_ext_complaint
=
147 {"unknown external symbol %s", 0, 0};
149 static struct complaint unknown_sym_complaint
=
150 {"unknown local symbol %s", 0, 0};
152 static struct complaint unknown_st_complaint
=
153 {"with type %d", 0, 0};
155 static struct complaint block_overflow_complaint
=
156 {"block containing %s overfilled", 0, 0};
158 static struct complaint basic_type_complaint
=
159 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
161 static struct complaint unknown_type_qual_complaint
=
162 {"unknown type qualifier 0x%x", 0, 0};
164 static struct complaint array_index_type_complaint
=
165 {"illegal array index type for %s, assuming int", 0, 0};
167 static struct complaint bad_tag_guess_complaint
=
168 {"guessed tag type of %s incorrectly", 0, 0};
170 static struct complaint block_member_complaint
=
171 {"declaration block contains unhandled symbol type %d", 0, 0};
173 static struct complaint stEnd_complaint
=
174 {"stEnd with storage class %d not handled", 0, 0};
176 static struct complaint unknown_mdebug_symtype_complaint
=
177 {"unknown symbol type 0x%x", 0, 0};
179 static struct complaint stab_unknown_complaint
=
180 {"unknown stabs symbol %s", 0, 0};
182 static struct complaint pdr_for_nonsymbol_complaint
=
183 {"PDR for %s, but no symbol", 0, 0};
185 static struct complaint pdr_static_symbol_complaint
=
186 {"can't handle PDR for static proc at 0x%lx", 0, 0};
188 static struct complaint bad_setjmp_pdr_complaint
=
189 {"fixing bad setjmp PDR from libc", 0, 0};
191 static struct complaint bad_fbitfield_complaint
=
192 {"can't handle TIR fBitfield for %s", 0, 0};
194 static struct complaint bad_continued_complaint
=
195 {"illegal TIR continued for %s", 0, 0};
197 static struct complaint bad_rfd_entry_complaint
=
198 {"bad rfd entry for %s: file %d, index %d", 0, 0};
200 static struct complaint unexpected_type_code_complaint
=
201 {"unexpected type code for %s", 0, 0};
203 static struct complaint unable_to_cross_ref_complaint
=
204 {"unable to cross ref btTypedef for %s", 0, 0};
206 static struct complaint illegal_forward_tq0_complaint
=
207 {"illegal tq0 in forward typedef for %s", 0, 0};
209 static struct complaint illegal_forward_bt_complaint
=
210 {"illegal bt %d in forward typedef for %s", 0, 0};
212 static struct complaint bad_linetable_guess_complaint
=
213 {"guessed size of linetable for %s incorrectly", 0, 0};
215 static struct complaint bad_ext_ifd_complaint
=
216 {"bad ifd for external symbol: %d (max %d)", 0, 0};
218 static struct complaint bad_ext_iss_complaint
=
219 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
221 /* Macros and extra defs */
223 /* Puns: hard to find whether -g was used and how */
225 #define MIN_GLEVEL GLEVEL_0
226 #define compare_glevel(a,b) \
227 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
228 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
230 /* Things that really are local to this module */
232 /* Remember what we deduced to be the source language of this psymtab. */
234 static enum language psymtab_language
= language_unknown
;
240 /* How to parse debugging information for CUR_BFD. */
242 static const struct ecoff_debug_swap
*debug_swap
;
244 /* Pointers to debugging information for CUR_BFD. */
246 static struct ecoff_debug_info
*debug_info
;
248 /* Pointer to current file decriptor record, and its index */
253 /* Index of current symbol */
257 /* Note how much "debuggable" this image is. We would like
258 to see at least one FDR with full symbols */
263 /* When examining .o files, report on undefined symbols */
265 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
267 /* Pseudo symbol to use when putting stabs into the symbol table. */
269 static char stabs_symbol
[] = STABS_SYMBOL
;
271 /* Types corresponding to btComplex, btDComplex, etc. These are here
272 rather than in gdbtypes.c or some such, because the meaning of codes
273 like btComplex is specific to the mdebug debug format. FIXME: We should
274 be using our own types thoughout this file, instead of sometimes using
277 static struct type
*mdebug_type_complex
;
278 static struct type
*mdebug_type_double_complex
;
279 static struct type
*mdebug_type_fixed_dec
;
280 static struct type
*mdebug_type_float_dec
;
281 static struct type
*mdebug_type_string
;
283 /* Forward declarations */
286 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
289 parse_partial_symbols
PARAMS ((struct objfile
*,
290 struct section_offsets
*));
293 *get_rfd
PARAMS ((int, int));
296 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
299 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
300 char **, int, char *));
302 static struct symbol
*
303 new_symbol
PARAMS ((char *));
306 new_type
PARAMS ((char *));
308 static struct block
*
309 new_block
PARAMS ((int));
311 static struct symtab
*
312 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
314 static struct linetable
*
315 new_linetable
PARAMS ((int));
317 static struct blockvector
*
318 new_bvect
PARAMS ((int));
321 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
324 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
326 static struct symbol
*
327 mylookup_symbol
PARAMS ((char *, struct block
*, enum namespace,
328 enum address_class
));
330 static struct block
*
331 shrink_block
PARAMS ((struct block
*, struct symtab
*));
334 xzalloc
PARAMS ((unsigned int));
337 sort_blocks
PARAMS ((struct symtab
*));
340 compare_blocks
PARAMS ((const void *, const void *));
342 static struct partial_symtab
*
343 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
346 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
349 add_block
PARAMS ((struct block
*, struct symtab
*));
352 add_symbol
PARAMS ((struct symbol
*, struct block
*));
355 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
357 static struct linetable
*
358 shrink_linetable
PARAMS ((struct linetable
*));
361 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int));
364 mdebug_next_symbol_text
PARAMS ((void));
366 /* Address bounds for the signal trampoline in inferior, if any */
368 CORE_ADDR sigtramp_address
, sigtramp_end
;
370 /* Allocate zeroed memory */
376 PTR p
= xmalloc (size
);
382 /* Exported procedure: Builds a symtab from the PST partial one.
383 Restores the environment in effect when PST was created, delegates
384 most of the work to an ancillary procedure, and sorts
385 and reorders the symtab list at the end */
388 mdebug_psymtab_to_symtab (pst
)
389 struct partial_symtab
*pst
;
397 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
398 gdb_flush (gdb_stdout
);
401 next_symbol_text_func
= mdebug_next_symbol_text
;
403 psymtab_to_symtab_1 (pst
, pst
->filename
);
405 /* Match with global symbols. This only needs to be done once,
406 after all of the symtabs and dependencies have been read in. */
407 scan_file_globals (pst
->objfile
);
410 printf_filtered ("done.\n");
413 /* File-level interface functions */
415 /* Find a file descriptor given its index RF relative to a file CF */
425 fdrs
= debug_info
->fdr
;
427 /* Object files do not have the RFD table, all refs are absolute */
430 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
431 ((char *) debug_info
->external_rfd
433 * debug_swap
->external_rfd_size
)),
438 /* Return a safer print NAME for a file descriptor */
445 return "<stripped file>";
448 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
452 /* Read in and parse the symtab of the file OBJFILE. Symbols from
453 different sections are relocated via the SECTION_OFFSETS. */
456 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
457 struct objfile
*objfile
;
458 const struct ecoff_debug_swap
*swap
;
459 struct ecoff_debug_info
*info
;
460 struct section_offsets
*section_offsets
;
462 cur_bfd
= objfile
->obfd
;
466 /* Make sure all the FDR information is swapped in. */
467 if (info
->fdr
== (FDR
*) NULL
)
473 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
474 (info
->symbolic_header
.ifdMax
476 fdr_src
= info
->external_fdr
;
478 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
480 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
481 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
484 parse_partial_symbols (objfile
, section_offsets
);
487 /* Check to make sure file was compiled with -g. If not, warn the
488 user of this limitation. */
489 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
491 if (max_gdbinfo
== 0)
492 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
494 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
495 gdb_flush (gdb_stdout
);
500 /* Local utilities */
502 /* Map of FDR indexes to partial symtabs */
506 struct partial_symtab
*pst
; /* the psymtab proper */
507 long n_globals
; /* exported globals (external symbols) */
508 long globals_offset
; /* cumulative */
512 /* Utility stack, used to nest procedures and blocks properly.
513 It is a doubly linked list, to avoid too many alloc/free.
514 Since we might need it quite a few times it is NOT deallocated
517 static struct parse_stack
519 struct parse_stack
*next
, *prev
;
520 struct symtab
*cur_st
; /* Current symtab. */
521 struct block
*cur_block
; /* Block in it. */
523 /* What are we parsing. stFile, or stBlock are for files and
524 blocks. stProc or stStaticProc means we have seen the start of a
525 procedure, but not the start of the block within in. When we see
526 the start of that block, we change it to stNil, without pushing a
527 new block, i.e. stNil means both a procedure and a block. */
531 int maxsyms
; /* Max symbols in this block. */
532 struct type
*cur_type
; /* Type we parse fields for. */
533 int cur_field
; /* Field number in cur_type. */
534 CORE_ADDR procadr
; /* Start addres of this procedure */
535 int numargs
; /* Its argument count */
538 *top_stack
; /* Top stack ptr */
541 /* Enter a new lexical context */
546 struct parse_stack
*new;
548 /* Reuse frames if possible */
549 if (top_stack
&& top_stack
->prev
)
550 new = top_stack
->prev
;
552 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
553 /* Initialize new frame with previous content */
556 register struct parse_stack
*prev
= new->prev
;
559 top_stack
->prev
= new;
561 new->next
= top_stack
;
566 /* Exit a lexical context */
574 top_stack
= top_stack
->next
;
578 /* Cross-references might be to things we haven't looked at
579 yet, e.g. type references. To avoid too many type
580 duplications we keep a quick fixup table, an array
581 of lists of references indexed by file descriptor */
583 struct mdebug_pending
585 struct mdebug_pending
*next
; /* link */
586 char *s
; /* the unswapped symbol */
587 struct type
*t
; /* its partial type descriptor */
591 /* The pending information is kept for an entire object file, and used
592 to be in the sym_private field. I took it out when I split
593 mdebugread from mipsread, because this might not be the only type
594 of symbols read from an object file. Instead, we allocate the
595 pending information table when we create the partial symbols, and
596 we store a pointer to the single table in each psymtab. */
598 static struct mdebug_pending
**pending_list
;
600 /* Check whether we already saw symbol SH in file FH */
602 static struct mdebug_pending
*
603 is_pending_symbol (fh
, sh
)
607 int f_idx
= fh
- debug_info
->fdr
;
608 register struct mdebug_pending
*p
;
610 /* Linear search is ok, list is typically no more than 10 deep */
611 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
617 /* Add a new symbol SH of type T */
620 add_pending (fh
, sh
, t
)
625 int f_idx
= fh
- debug_info
->fdr
;
626 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
628 /* Make sure we do not make duplicates */
631 p
= ((struct mdebug_pending
*)
632 obstack_alloc (¤t_objfile
->psymbol_obstack
,
633 sizeof (struct mdebug_pending
)));
636 p
->next
= pending_list
[f_idx
];
637 pending_list
[f_idx
] = p
;
642 /* Parsing Routines proper. */
644 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
645 For blocks, procedures and types we open a new lexical context.
646 This is basically just a big switch on the symbol's type. Argument
647 AX is the base pointer of aux symbols for this file (fh->iauxBase).
648 EXT_SH points to the unswapped symbol, which is needed for struct,
649 union, etc., types; it is NULL for an EXTR. BIGEND says whether
650 aux symbols are big-endian or little-endian. Return count of
651 SYMR's handled (normally one). */
654 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
659 struct section_offsets
*section_offsets
;
661 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
662 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
663 debug_swap
->swap_sym_in
;
667 struct mdebug_pending
*pend
;
671 enum address_class
class;
673 long svalue
= sh
->value
;
676 if (ext_sh
== (char *) NULL
)
677 name
= debug_info
->ssext
+ sh
->iss
;
679 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
684 /* The value of a stEnd symbol is the displacement from the
685 corresponding start symbol value, do not relocate it. */
687 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
694 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
698 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
707 case stGlobal
: /* external symbol, goes into global block */
709 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
711 s
= new_symbol (name
);
712 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
715 case stStatic
: /* static data, goes into current block. */
717 b
= top_stack
->cur_block
;
718 s
= new_symbol (name
);
719 if (sh
->sc
== scCommon
)
721 /* It is a FORTRAN common block. At least for SGI Fortran the
722 address is not in the symbol; we need to fix it later in
723 scan_file_globals. */
724 int bucket
= hashname (SYMBOL_NAME (s
));
725 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
726 global_sym_chain
[bucket
] = s
;
729 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
732 case stLocal
: /* local variable, goes into current block */
733 if (sh
->sc
== scRegister
)
735 class = LOC_REGISTER
;
736 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
740 b
= top_stack
->cur_block
;
741 s
= new_symbol (name
);
742 SYMBOL_VALUE (s
) = svalue
;
744 data
: /* Common code for symbols describing data */
745 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
746 SYMBOL_CLASS (s
) = class;
749 /* Type could be missing in a number of cases */
750 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
751 SYMBOL_TYPE (s
) = builtin_type_int
; /* undefined? */
753 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
754 /* Value of a data symbol is its memory address */
757 case stParam
: /* arg to procedure, goes into current block */
759 top_stack
->numargs
++;
761 /* Special GNU C++ name. */
762 if (name
[0] == CPLUS_MARKER
&& name
[1] == 't' && name
[2] == 0)
763 name
= "this"; /* FIXME, not alloc'd in obstack */
764 s
= new_symbol (name
);
766 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
770 /* Pass by value in register. */
771 SYMBOL_CLASS(s
) = LOC_REGPARM
;
772 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
775 /* Pass by reference on stack. */
776 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
779 /* Pass by reference in register. */
780 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
781 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
784 /* Pass by value on stack. */
785 SYMBOL_CLASS(s
) = LOC_ARG
;
788 SYMBOL_VALUE (s
) = svalue
;
789 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
790 add_symbol (s
, top_stack
->cur_block
);
792 /* FIXME: This has not been tested. See dbxread.c */
793 /* Add the type of this parameter to the function/procedure
794 type of this block. */
795 add_param_to_type (&top_stack
->cur_block
->function
->type
, s
);
799 case stLabel
: /* label, goes into current block */
800 s
= new_symbol (name
);
801 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
802 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
803 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
804 SYMBOL_TYPE (s
) = builtin_type_int
;
805 add_symbol (s
, top_stack
->cur_block
);
808 case stProc
: /* Procedure, usually goes into global block */
809 case stStaticProc
: /* Static procedure, goes into current block */
810 s
= new_symbol (name
);
811 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
812 SYMBOL_CLASS (s
) = LOC_BLOCK
;
813 /* Type of the return value */
814 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
815 t
= builtin_type_int
;
817 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
818 b
= top_stack
->cur_block
;
819 if (sh
->st
== stProc
)
821 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
822 /* The next test should normally be true, but provides a
823 hook for nested functions (which we don't want to make
825 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
826 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
827 /* Irix 5 sometimes has duplicate names for the same
828 function. We want to add such names up at the global
829 level, not as a nested function. */
830 else if (sh
->value
== top_stack
->procadr
)
831 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
835 /* Make a type for the procedure itself */
837 /* FIXME: This has not been tested yet! See dbxread.c */
838 /* Generate a template for the type of this function. The
839 types of the arguments will be added as we read the symbol
841 memcpy (lookup_function_type (t
), SYMBOL_TYPE (s
), sizeof (struct type
));
843 SYMBOL_TYPE (s
) = lookup_function_type (t
);
846 /* Create and enter a new lexical context */
847 b
= new_block (top_stack
->maxsyms
);
848 SYMBOL_BLOCK_VALUE (s
) = b
;
849 BLOCK_FUNCTION (b
) = s
;
850 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
851 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
852 add_block (b
, top_stack
->cur_st
);
854 /* Not if we only have partial info */
855 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
859 top_stack
->cur_block
= b
;
860 top_stack
->blocktype
= sh
->st
;
861 top_stack
->cur_type
= SYMBOL_TYPE (s
);
862 top_stack
->cur_field
= -1;
863 top_stack
->procadr
= sh
->value
;
864 top_stack
->numargs
= 0;
867 /* Beginning of code for structure, union, and enum definitions.
868 They all share a common set of local variables, defined here. */
870 enum type_code type_code
;
876 case stStruct
: /* Start a block defining a struct type */
877 type_code
= TYPE_CODE_STRUCT
;
878 goto structured_common
;
880 case stUnion
: /* Start a block defining a union type */
881 type_code
= TYPE_CODE_UNION
;
882 goto structured_common
;
884 case stEnum
: /* Start a block defining an enum type */
885 type_code
= TYPE_CODE_ENUM
;
886 goto structured_common
;
888 case stBlock
: /* Either a lexical block, or some type */
889 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
)
890 goto case_stBlock_code
; /* Lexical block */
892 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
894 /* Common code for handling struct, union, enum, and/or as-yet-
895 unknown-type blocks of info about structured data. `type_code'
896 has been set to the proper TYPE_CODE, if we know it. */
899 top_stack
->blocktype
= stBlock
;
901 /* First count the number of fields and the highest value. */
904 for (ext_tsym
= ext_sh
+ external_sym_size
;
906 ext_tsym
+= external_sym_size
)
910 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
918 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
919 /* If the type of the member is Nil (or Void),
920 without qualifiers, assume the tag is an
922 if (tsym
.index
== indexNil
)
923 type_code
= TYPE_CODE_ENUM
;
926 (*debug_swap
->swap_tir_in
) (bigend
,
927 &ax
[tsym
.index
].a_ti
,
929 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
931 type_code
= TYPE_CODE_ENUM
;
934 if (tsym
.value
> max_value
)
935 max_value
= tsym
.value
;
944 /* This is a no-op; is it trying to tell us something
945 we should be checking? */
946 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
950 /* This is something like a struct within a
951 struct. Skip over the fields of the inner
952 struct. The -1 is because the for loop will
953 increment ext_tsym. */
954 ext_tsym
= ((char *) debug_info
->external_sym
955 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
956 * external_sym_size
));
962 /* mips cc puts out a typedef for struct x if it is not yet
963 defined when it encounters
964 struct y { struct x *xp; };
969 /* Irix5 cc puts out a stIndirect for struct x if it is not
970 yet defined when it encounters
971 struct y { struct x *xp; };
976 complain (&block_member_complaint
, tsym
.st
);
981 /* In an stBlock, there is no way to distinguish structs,
982 unions, and enums at this point. This is a bug in the
983 original design (that has been fixed with the recent
984 addition of the stStruct, stUnion, and stEnum symbol
985 types.) The way you can tell is if/when you see a variable
986 or field of that type. In that case the variable's type
987 (in the AUX table) says if the type is struct, union, or
988 enum, and points back to the stBlock here. So you can
989 patch the tag kind up later - but only if there actually is
990 a variable or field of that type.
992 So until we know for sure, we will guess at this point.
994 If the first member has index==indexNil or a void type,
995 assume we have an enumeration.
996 Otherwise, if there is more than one member, and all
997 the members have offset 0, assume we have a union.
998 Otherwise, assume we have a struct.
1000 The heuristic could guess wrong in the case of of an
1001 enumeration with no members or a union with one (or zero)
1002 members, or when all except the last field of a struct have
1003 width zero. These are uncommon and/or illegal situations,
1004 and in any case guessing wrong probably doesn't matter
1007 But if we later do find out we were wrong, we fixup the tag
1008 kind. Members of an enumeration must be handled
1009 differently from struct/union fields, and that is harder to
1010 patch up, but luckily we shouldn't need to. (If there are
1011 any enumeration members, we can tell for sure it's an enum
1014 if (type_code
== TYPE_CODE_UNDEF
)
1015 if (nfields
> 1 && max_value
== 0)
1016 type_code
= TYPE_CODE_UNION
;
1018 type_code
= TYPE_CODE_STRUCT
;
1020 /* Create a new type or use the pending type. */
1021 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1022 if (pend
== (struct mdebug_pending
*) NULL
)
1024 t
= new_type (NULL
);
1025 add_pending (cur_fdr
, ext_sh
, t
);
1030 /* Do not set the tag name if it is a compiler generated tag name
1031 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1032 Alpha cc puts out an sh->iss of zero for those. */
1033 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1034 TYPE_TAG_NAME (t
) = NULL
;
1036 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1039 TYPE_CODE (t
) = type_code
;
1040 TYPE_LENGTH (t
) = sh
->value
;
1041 TYPE_NFIELDS (t
) = nfields
;
1042 TYPE_FIELDS (t
) = f
= ((struct field
*)
1044 nfields
* sizeof (struct field
)));
1046 if (type_code
== TYPE_CODE_ENUM
)
1048 /* This is a non-empty enum. */
1050 /* DEC c89 has the number of enumerators in the sh.value field,
1051 not the type length, so we have to compensate for that
1052 incompatibility quirk.
1053 This might do the wrong thing for an enum with one or two
1054 enumerators and gcc -gcoff -fshort-enums, but these cases
1055 are hopefully rare enough. */
1056 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
))
1057 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1058 for (ext_tsym
= ext_sh
+ external_sym_size
;
1060 ext_tsym
+= external_sym_size
)
1063 struct symbol
*enum_sym
;
1065 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1067 if (tsym
.st
!= stMember
)
1070 f
->bitpos
= tsym
.value
;
1072 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1075 enum_sym
= ((struct symbol
*)
1076 obstack_alloc (¤t_objfile
->symbol_obstack
,
1077 sizeof (struct symbol
)));
1078 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1079 SYMBOL_NAME (enum_sym
) = f
->name
;
1080 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1081 SYMBOL_TYPE (enum_sym
) = t
;
1082 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1083 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1084 add_symbol (enum_sym
, top_stack
->cur_block
);
1086 /* Skip the stMembers that we've handled. */
1091 /* make this the current type */
1092 top_stack
->cur_type
= t
;
1093 top_stack
->cur_field
= 0;
1095 /* Do not create a symbol for alpha cc unnamed structs. */
1099 /* gcc puts out an empty struct for an opaque struct definitions,
1100 do not create a symbol for it either. */
1101 if (TYPE_NFIELDS (t
) == 0)
1103 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1107 s
= new_symbol (name
);
1108 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1109 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1110 SYMBOL_VALUE (s
) = 0;
1111 SYMBOL_TYPE (s
) = t
;
1112 add_symbol (s
, top_stack
->cur_block
);
1115 /* End of local variables shared by struct, union, enum, and
1116 block (as yet unknown struct/union/enum) processing. */
1120 /* beginnning of (code) block. Value of symbol
1121 is the displacement from procedure start */
1122 push_parse_stack ();
1124 /* Do not start a new block if this is the outermost block of a
1125 procedure. This allows the LOC_BLOCK symbol to point to the
1126 block with the local variables, so funcname::var works. */
1127 if (top_stack
->blocktype
== stProc
1128 || top_stack
->blocktype
== stStaticProc
)
1130 top_stack
->blocktype
= stNil
;
1134 top_stack
->blocktype
= stBlock
;
1135 b
= new_block (top_stack
->maxsyms
);
1136 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1137 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1138 top_stack
->cur_block
= b
;
1139 add_block (b
, top_stack
->cur_st
);
1142 case stEnd
: /* end (of anything) */
1143 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
)
1145 /* Finished with type */
1146 top_stack
->cur_type
= 0;
1148 else if (sh
->sc
== scText
&&
1149 (top_stack
->blocktype
== stProc
||
1150 top_stack
->blocktype
== stStaticProc
))
1152 /* Finished with procedure */
1153 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1154 struct mips_extra_func_info
*e
;
1158 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1160 /* Make up special symbol to contain procedure specific info */
1161 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1162 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1163 SYMBOL_CLASS (s
) = LOC_CONST
;
1164 SYMBOL_TYPE (s
) = builtin_type_void
;
1165 e
= ((struct mips_extra_func_info
*)
1166 obstack_alloc (¤t_objfile
->symbol_obstack
,
1167 sizeof (struct mips_extra_func_info
)));
1168 SYMBOL_VALUE (s
) = (long) e
;
1169 e
->numargs
= top_stack
->numargs
;
1170 add_symbol (s
, top_stack
->cur_block
);
1172 /* Reallocate symbols, saving memory */
1173 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1175 /* f77 emits proc-level with address bounds==[0,0],
1176 So look for such child blocks, and patch them. */
1177 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1179 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1180 if (BLOCK_SUPERBLOCK (b_bad
) == b
1181 && BLOCK_START (b_bad
) == top_stack
->procadr
1182 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1184 BLOCK_START (b_bad
) = BLOCK_START (b
);
1185 BLOCK_END (b_bad
) = BLOCK_END (b
);
1189 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1191 /* End of (code) block. The value of the symbol is the
1192 displacement from the procedure`s start address of the
1193 end of this block. */
1194 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1195 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1197 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1199 /* End of outermost block. Pop parse stack and ignore. The
1200 following stEnd of stProc will take care of the block. */
1203 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1205 /* End of file. Pop parse stack and ignore. Higher
1206 level code deals with this. */
1210 complain (&stEnd_complaint
, sh
->sc
);
1212 pop_parse_stack (); /* restore previous lexical context */
1215 case stMember
: /* member of struct or union */
1216 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1218 f
->bitpos
= sh
->value
;
1220 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1221 f
->bitsize
= bitsize
;
1224 case stIndirect
: /* forward declaration on Irix5 */
1225 /* Forward declarations from Irix5 cc are handled by cross_ref,
1229 case stTypedef
: /* type definition */
1230 /* Typedefs for forward declarations and opaque structs from alpha cc
1231 are handled by cross_ref, skip them. */
1235 /* Parse the type or use the pending type. */
1236 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1237 if (pend
== (struct mdebug_pending
*) NULL
)
1239 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1240 add_pending (cur_fdr
, ext_sh
, t
);
1245 /* mips cc puts out a typedef with the name of the struct for forward
1246 declarations. These should not go into the symbol table and
1247 TYPE_NAME should not be set for them.
1248 They can't be distinguished from an intentional typedef to
1249 the same name however:
1251 struct x { int ix; int jx; };
1255 struct xx {int ixx; int jxx; };
1256 generates a cross referencing stTypedef for x and xx.
1257 The user visible effect of this is that the type of a pointer
1258 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1259 The problem is fixed with alpha cc and Irix5 cc. */
1261 /* However if the typedef cross references to an opaque aggregate, it
1262 is safe to omit it from the symbol table. */
1264 if (has_opaque_xref (cur_fdr
, sh
))
1266 s
= new_symbol (name
);
1267 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1268 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1269 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1270 SYMBOL_TYPE (s
) = t
;
1271 add_symbol (s
, top_stack
->cur_block
);
1273 /* Incomplete definitions of structs should not get a name. */
1274 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1275 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1276 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1277 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1279 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1280 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1282 /* If we are giving a name to a type such as "pointer to
1283 foo" or "function returning foo", we better not set
1284 the TYPE_NAME. If the program contains "typedef char
1285 *caddr_t;", we don't want all variables of type char
1286 * to print as caddr_t. This is not just a
1287 consequence of GDB's type management; CC and GCC (at
1288 least through version 2.4) both output variables of
1289 either type char * or caddr_t with the type
1290 refering to the stTypedef symbol for caddr_t. If a future
1291 compiler cleans this up it GDB is not ready for it
1292 yet, but if it becomes ready we somehow need to
1293 disable this check (without breaking the PCC/GCC2.4
1298 Fortunately, this check seems not to be necessary
1299 for anything except pointers or functions. */
1302 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1306 case stFile
: /* file name */
1307 push_parse_stack ();
1308 top_stack
->blocktype
= sh
->st
;
1311 /* I`ve never seen these for C */
1313 break; /* register relocation */
1315 break; /* forwarding address */
1317 break; /* constant */
1319 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1326 /* Parse the type information provided in the raw AX entries for
1327 the symbol SH. Return the bitfield size in BS, in case.
1328 We must byte-swap the AX entries before we use them; BIGEND says whether
1329 they are big-endian or little-endian (from fh->fBigendian). */
1331 static struct type
*
1332 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1335 unsigned int aux_index
;
1340 /* Null entries in this map are treated specially */
1341 static struct type
**map_bt
[] =
1343 &builtin_type_void
, /* btNil */
1345 &builtin_type_char
, /* btChar */
1346 &builtin_type_unsigned_char
,/* btUChar */
1347 &builtin_type_short
, /* btShort */
1348 &builtin_type_unsigned_short
, /* btUShort */
1349 &builtin_type_int
, /* btInt */
1350 &builtin_type_unsigned_int
, /* btUInt */
1351 &builtin_type_long
, /* btLong */
1352 &builtin_type_unsigned_long
,/* btULong */
1353 &builtin_type_float
, /* btFloat */
1354 &builtin_type_double
, /* btDouble */
1361 &mdebug_type_complex
, /* btComplex */
1362 &mdebug_type_double_complex
, /* btDComplex */
1364 &mdebug_type_fixed_dec
, /* btFixedDec */
1365 &mdebug_type_float_dec
, /* btFloatDec */
1366 &mdebug_type_string
, /* btString */
1369 &builtin_type_void
, /* btVoid */
1370 0, /* DEC C++: Pointer to member */
1371 0, /* DEC C++: Virtual function table */
1372 0, /* DEC C++: Class (Record) */
1373 &builtin_type_long
, /* btLong64 */
1374 &builtin_type_unsigned_long
, /* btULong64 */
1375 &builtin_type_long_long
, /* btLongLong64 */
1376 &builtin_type_unsigned_long_long
, /* btULongLong64 */
1377 &builtin_type_unsigned_long
, /* btAdr64 */
1378 &builtin_type_long
, /* btInt64 */
1379 &builtin_type_unsigned_long
, /* btUInt64 */
1383 struct type
*tp
= 0;
1384 enum type_code type_code
= TYPE_CODE_UNDEF
;
1386 /* Handle undefined types, they have indexNil. */
1387 if (aux_index
== indexNil
)
1388 return builtin_type_int
;
1390 /* Handle corrupt aux indices. */
1391 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1393 complain (&index_complaint
, sym_name
);
1394 return builtin_type_int
;
1398 /* Use aux as a type information record, map its basic type. */
1399 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1400 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1402 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1403 return builtin_type_int
;
1407 tp
= *map_bt
[t
->bt
];
1412 /* Cannot use builtin types -- build our own */
1416 tp
= lookup_pointer_type (builtin_type_void
);
1419 type_code
= TYPE_CODE_STRUCT
;
1422 type_code
= TYPE_CODE_UNION
;
1425 type_code
= TYPE_CODE_ENUM
;
1428 type_code
= TYPE_CODE_RANGE
;
1431 type_code
= TYPE_CODE_SET
;
1434 /* alpha cc uses this for typedefs. The true type will be
1435 obtained by crossreferencing below. */
1436 type_code
= TYPE_CODE_ERROR
;
1439 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1440 return builtin_type_int
;
1444 /* Move on to next aux */
1449 /* Inhibit core dumps with some cfront generated objects that
1451 if (bs
== (int *)NULL
)
1453 complain (&bad_fbitfield_complaint
, sym_name
);
1454 return builtin_type_int
;
1456 *bs
= AUX_GET_WIDTH (bigend
, ax
);
1460 /* All these types really point to some (common) MIPS type
1461 definition, and only the type-qualifiers fully identify
1462 them. We'll make the same effort at sharing. */
1463 if (t
->bt
== btStruct
||
1467 /* btSet (I think) implies that the name is a tag name, not a typedef
1468 name. This apparently is a MIPS extension for C sets. */
1473 /* Try to cross reference this type, build new type on failure. */
1474 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1475 if (tp
== (struct type
*) NULL
)
1476 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1478 /* DEC c89 produces cross references to qualified aggregate types,
1479 dereference them. */
1480 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1481 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1482 tp
= tp
->target_type
;
1484 /* Make sure that TYPE_CODE(tp) has an expected type code.
1485 Any type may be returned from cross_ref if file indirect entries
1487 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1488 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1489 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1491 complain (&unexpected_type_code_complaint
, sym_name
);
1496 /* Usually, TYPE_CODE(tp) is already type_code. The main
1497 exception is if we guessed wrong re struct/union/enum.
1498 But for struct vs. union a wrong guess is harmless, so
1499 don't complain(). */
1500 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1501 && type_code
!= TYPE_CODE_ENUM
)
1502 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1503 && type_code
== TYPE_CODE_ENUM
))
1505 complain (&bad_tag_guess_complaint
, sym_name
);
1508 if (TYPE_CODE (tp
) != type_code
)
1510 TYPE_CODE (tp
) = type_code
;
1513 /* Do not set the tag name if it is a compiler generated tag name
1514 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1515 if (name
[0] == '.' || name
[0] == '\0')
1516 TYPE_TAG_NAME (tp
) = NULL
;
1517 else if (TYPE_TAG_NAME (tp
) == NULL
1518 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1519 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1520 ¤t_objfile
->type_obstack
);
1524 /* All these types really point to some (common) MIPS type
1525 definition, and only the type-qualifiers fully identify
1526 them. We'll make the same effort at sharing.
1527 FIXME: btIndirect cannot happen here as it is handled by the
1528 switch t->bt above. And we are not doing any guessing on range types. */
1529 if (t
->bt
== btIndirect
||
1534 /* Try to cross reference this type, build new type on failure. */
1535 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1536 if (tp
== (struct type
*) NULL
)
1537 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1539 /* Make sure that TYPE_CODE(tp) has an expected type code.
1540 Any type may be returned from cross_ref if file indirect entries
1542 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1544 complain (&unexpected_type_code_complaint
, sym_name
);
1548 /* Usually, TYPE_CODE(tp) is already type_code. The main
1549 exception is if we guessed wrong re struct/union/enum. */
1550 if (TYPE_CODE (tp
) != type_code
)
1552 complain (&bad_tag_guess_complaint
, sym_name
);
1553 TYPE_CODE (tp
) = type_code
;
1555 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1556 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1557 ¤t_objfile
->type_obstack
);
1560 if (t
->bt
== btTypedef
)
1564 /* Try to cross reference this type, it should succeed. */
1565 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1566 if (tp
== (struct type
*) NULL
)
1568 complain (&unable_to_cross_ref_complaint
, sym_name
);
1569 tp
= builtin_type_int
;
1573 /* Deal with range types */
1574 if (t
->bt
== btRange
)
1576 TYPE_NFIELDS (tp
) = 2;
1577 TYPE_FIELDS (tp
) = ((struct field
*)
1578 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1579 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1580 ¤t_objfile
->type_obstack
);
1581 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1583 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1584 ¤t_objfile
->type_obstack
);
1585 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1589 /* Parse all the type qualifiers now. If there are more
1590 than 6 the game will continue in the next aux */
1594 #define PARSE_TQ(tq) \
1595 if (t->tq != tqNil) \
1596 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1608 /* mips cc 2.x and gcc never put out continued aux entries. */
1612 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1616 /* Complain for illegal continuations due to corrupt aux entries. */
1618 complain (&bad_continued_complaint
, sym_name
);
1623 /* Make up a complex type from a basic one. Type is passed by
1624 reference in TPP and side-effected as necessary. The type
1625 qualifier TQ says how to handle the aux symbols at AX for
1626 the symbol SX we are currently analyzing. BIGEND says whether
1627 aux symbols are big-endian or little-endian.
1628 Returns the number of aux symbols we parsed. */
1631 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1642 /* Used in array processing */
1653 t
= lookup_pointer_type (*tpp
);
1658 t
= lookup_function_type (*tpp
);
1665 /* Determine and record the domain type (type of index) */
1666 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1672 rf
= AUX_GET_ISYM (bigend
, ax
);
1675 fh
= get_rfd (fd
, rf
);
1677 indx
= parse_type (fd
, debug_info
->external_aux
+ fh
->iauxBase
,
1678 id
, (int *) NULL
, bigend
, sym_name
);
1680 /* The bounds type should be an integer type, but might be anything
1681 else due to corrupt aux entries. */
1682 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1684 complain (&array_index_type_complaint
, sym_name
);
1685 indx
= builtin_type_int
;
1688 /* Get the bounds, and create the array type. */
1690 lower
= AUX_GET_DNLOW (bigend
, ax
);
1692 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1694 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1696 range
= create_range_type ((struct type
*) NULL
, indx
,
1699 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1701 /* We used to fill in the supplied array element bitsize
1702 here if the TYPE_LENGTH of the target type was zero.
1703 This happens for a `pointer to an array of anonymous structs',
1704 but in this case the array element bitsize is also zero,
1705 so nothing is gained.
1706 And we used to check the TYPE_LENGTH of the target type against
1707 the supplied array element bitsize.
1708 gcc causes a mismatch for `pointer to array of object',
1709 since the sdb directives it uses do not have a way of
1710 specifying the bitsize, but it does no harm (the
1711 TYPE_LENGTH should be correct) and we should be able to
1712 ignore the erroneous bitsize from the auxiliary entry safely.
1713 dbx seems to ignore it too. */
1719 /* Volatile -- currently ignored */
1723 /* Const -- currently ignored */
1727 complain (&unknown_type_qual_complaint
, tq
);
1733 /* Parse a procedure descriptor record PR. Note that the procedure is
1734 parsed _after_ the local symbols, now we just insert the extra
1735 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1736 already been placed in the procedure's main block. Note also that
1737 images that have been partially stripped (ld -x) have been deprived
1738 of local symbols, and we have to cope with them here. FIRST_OFF is
1739 the offset of the first procedure for this FDR; we adjust the
1740 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1741 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1742 in question, or NULL to use top_stack->cur_block. */
1744 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, unsigned long,
1745 struct partial_symtab
*));
1748 parse_procedure (pr
, search_symtab
, first_off
, pst
)
1750 struct symtab
*search_symtab
;
1751 unsigned long first_off
;
1752 struct partial_symtab
*pst
;
1754 struct symbol
*s
, *i
;
1756 struct mips_extra_func_info
*e
;
1759 /* Simple rule to find files linked "-x" */
1760 if (cur_fdr
->rss
== -1)
1764 /* Static procedure at address pr->adr. Sigh. */
1765 /* FIXME-32x64. assuming pr->adr fits in long. */
1766 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1774 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1775 ((char *) debug_info
->external_ext
1777 * debug_swap
->external_ext_size
)),
1779 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1787 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1788 ((char *) debug_info
->external_sym
1789 + ((cur_fdr
->isymBase
+ pr
->isym
)
1790 * debug_swap
->external_sym_size
)),
1792 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1795 if (search_symtab
!= NULL
)
1798 /* This loses both in the case mentioned (want a static, find a global),
1799 but also if we are looking up a non-mangled name which happens to
1800 match the name of a mangled function. */
1801 /* We have to save the cur_fdr across the call to lookup_symbol.
1802 If the pdr is for a static function and if a global function with
1803 the same name exists, lookup_symbol will eventually read in the symtab
1804 for the global function and clobber cur_fdr. */
1805 FDR
*save_cur_fdr
= cur_fdr
;
1806 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1807 cur_fdr
= save_cur_fdr
;
1811 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1817 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1818 VAR_NAMESPACE
, LOC_BLOCK
);
1822 b
= SYMBOL_BLOCK_VALUE (s
);
1826 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1830 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1831 s
= new_symbol (sh_name
);
1832 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1833 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1834 /* Donno its type, hope int is ok */
1835 SYMBOL_TYPE (s
) = lookup_function_type (builtin_type_int
);
1836 add_symbol (s
, top_stack
->cur_block
);
1837 /* Wont have symbols for this one */
1839 SYMBOL_BLOCK_VALUE (s
) = b
;
1840 BLOCK_FUNCTION (b
) = s
;
1841 BLOCK_START (b
) = pr
->adr
;
1842 /* BOUND used to be the end of procedure's text, but the
1843 argument is no longer passed in. */
1844 BLOCK_END (b
) = bound
;
1845 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1846 add_block (b
, top_stack
->cur_st
);
1850 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1854 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1856 e
->pdr
.isym
= (long) s
;
1857 e
->pdr
.adr
+= pst
->textlow
- first_off
;
1859 /* Correct incorrect setjmp procedure descriptor from the library
1860 to make backtrace through setjmp work. */
1861 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1863 complain (&bad_setjmp_pdr_complaint
, 0);
1864 e
->pdr
.pcreg
= RA_REGNUM
;
1865 e
->pdr
.regmask
= 0x80000000;
1866 e
->pdr
.regoffset
= -4;
1871 /* Relocate the extra function info pointed to by the symbol table. */
1874 ecoff_relocate_efi (sym
, delta
)
1878 struct mips_extra_func_info
*e
;
1880 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
1882 e
->pdr
.adr
+= delta
;
1885 /* Parse the external symbol ES. Just call parse_symbol() after
1886 making sure we know where the aux are for it.
1887 BIGEND says whether aux entries are big-endian or little-endian.
1889 This routine clobbers top_stack->cur_block and ->cur_st. */
1891 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
1894 parse_external (es
, bigend
, section_offsets
)
1897 struct section_offsets
*section_offsets
;
1901 if (es
->ifd
!= ifdNil
)
1904 cur_fdr
= debug_info
->fdr
+ cur_fd
;
1905 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
1909 cur_fdr
= debug_info
->fdr
;
1913 /* Reading .o files */
1914 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scNil
)
1917 switch (es
->asym
.st
)
1920 /* These are generated for static symbols in .o files,
1941 /* FIXME: Turn this into a complaint? */
1943 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
1944 what
, debug_info
->ssext
+ es
->asym
.iss
,
1945 fdr_name (cur_fdr
));
1949 switch (es
->asym
.st
)
1953 /* There is no need to parse the external procedure symbols.
1954 If they are from objects compiled without -g, their index will
1955 be indexNil, and the symbol definition from the minimal symbol
1956 is preferrable (yielding a function returning int instead of int).
1957 If the index points to a local procedure symbol, the local
1958 symbol already provides the correct type.
1959 Note that the index of the external procedure symbol points
1960 to the local procedure symbol in the local symbol table, and
1961 _not_ to the auxiliary symbol info. */
1965 /* Note that the case of a symbol with indexNil must be handled
1966 anyways by parse_symbol(). */
1967 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
1974 /* Parse the line number info for file descriptor FH into
1975 GDB's linetable LT. MIPS' encoding requires a little bit
1976 of magic to get things out. Note also that MIPS' line
1977 numbers can go back and forth, apparently we can live
1978 with that and do not need to reorder our linetables */
1980 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
1981 struct partial_symtab
*));
1984 parse_lines (fh
, pr
, lt
, maxlines
, pst
)
1987 struct linetable
*lt
;
1989 struct partial_symtab
*pst
;
1991 unsigned char *base
;
1993 int delta
, count
, lineno
= 0;
1994 unsigned long first_off
= pr
->adr
;
1996 if (fh
->cbLine
== 0)
1999 /* Scan by procedure descriptors */
2001 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2005 unsigned char *halt
;
2007 /* No code for this one */
2008 if (pr
->iline
== ilineNil
||
2009 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2012 /* Determine start and end address of compressed line bytes for
2014 base
= debug_info
->line
+ fh
->cbLineOffset
;
2015 if (j
!= (fh
->cpd
- 1))
2016 halt
= base
+ pr
[1].cbLineOffset
;
2018 halt
= base
+ fh
->cbLine
;
2019 base
+= pr
->cbLineOffset
;
2021 adr
= pst
->textlow
+ pr
->adr
- first_off
;
2023 l
= adr
>> 2; /* in words */
2024 for (lineno
= pr
->lnLow
; base
< halt
; )
2026 count
= *base
& 0x0f;
2027 delta
= *base
++ >> 4;
2032 delta
= (base
[0] << 8) | base
[1];
2033 if (delta
>= 0x8000)
2037 lineno
+= delta
; /* first delta is 0 */
2039 /* Complain if the line table overflows. Could happen
2040 with corrupt binaries. */
2041 if (lt
->nitems
>= maxlines
)
2043 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2046 k
= add_line (lt
, lineno
, l
, k
);
2052 /* Master parsing procedure for first-pass reading of file symbols
2053 into a partial_symtab. */
2056 parse_partial_symbols (objfile
, section_offsets
)
2057 struct objfile
*objfile
;
2058 struct section_offsets
*section_offsets
;
2060 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2061 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2062 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2063 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2064 = debug_swap
->swap_ext_in
;
2065 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2066 = debug_swap
->swap_sym_in
;
2067 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2068 = debug_swap
->swap_rfd_in
;
2070 HDRR
*hdr
= &debug_info
->symbolic_header
;
2071 /* Running pointers */
2076 register EXTR
*ext_in
;
2079 struct partial_symtab
*pst
;
2081 int past_first_source_file
= 0;
2083 /* List of current psymtab's include files */
2084 char **psymtab_include_list
;
2085 int includes_allocated
;
2088 struct pst_map
*fdr_to_pst
;
2089 /* Index within current psymtab dependency list */
2090 struct partial_symtab
**dependency_list
;
2091 int dependencies_used
, dependencies_allocated
;
2092 struct cleanup
*old_chain
;
2094 enum language prev_language
;
2095 asection
*text_sect
;
2096 int relocatable
= 0;
2098 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2099 the shared libraries are prelinked at a high memory address.
2100 We have to adjust the start address of the object file for this case,
2101 by setting it to the start address of the first procedure in the file.
2102 But we should do no adjustments if we are debugging a .o file, where
2103 the text section (and fh->adr) really starts at zero. */
2104 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2105 if (text_sect
!= NULL
2106 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2109 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2110 sizeof (EXTR
) * hdr
->iextMax
);
2112 includes_allocated
= 30;
2114 psymtab_include_list
= (char **) alloca (includes_allocated
*
2116 next_symbol_text_func
= mdebug_next_symbol_text
;
2118 dependencies_allocated
= 30;
2119 dependencies_used
= 0;
2121 (struct partial_symtab
**) alloca (dependencies_allocated
*
2122 sizeof (struct partial_symtab
*));
2124 last_source_file
= NULL
;
2129 * Only parse the Local and External symbols, and the Relative FDR.
2130 * Fixup enough of the loader symtab to be able to use it.
2131 * Allocate space only for the file's portions we need to
2136 max_glevel
= MIN_GLEVEL
;
2138 /* Allocate the map FDR -> PST.
2139 Minor hack: -O3 images might claim some global data belongs
2140 to FDR -1. We`ll go along with that */
2141 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2142 old_chain
= make_cleanup (free
, fdr_to_pst
);
2145 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2146 fdr_to_pst
[-1].pst
= pst
;
2150 /* Allocate the global pending list. */
2152 ((struct mdebug_pending
**)
2153 obstack_alloc (&objfile
->psymbol_obstack
,
2154 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2155 memset ((PTR
) pending_list
, 0,
2156 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2158 /* Pass 0 over external syms: swap them in. */
2159 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2160 make_cleanup (free
, ext_block
);
2162 ext_out
= (char *) debug_info
->external_ext
;
2163 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2165 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2166 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2168 /* Pass 1 over external syms: Presize and partition the list */
2170 ext_in_end
= ext_in
+ hdr
->iextMax
;
2171 for (; ext_in
< ext_in_end
; ext_in
++)
2173 /* See calls to complain below. */
2174 if (ext_in
->ifd
>= -1
2175 && ext_in
->ifd
< hdr
->ifdMax
2176 && ext_in
->asym
.iss
>= 0
2177 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2178 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2181 /* Pass 1.5 over files: partition out global symbol space */
2183 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2185 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2186 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2187 fdr_to_pst
[f_idx
].n_globals
= 0;
2190 /* Pass 2 over external syms: fill in external symbols */
2192 ext_in_end
= ext_in
+ hdr
->iextMax
;
2193 for (; ext_in
< ext_in_end
; ext_in
++)
2195 enum minimal_symbol_type ms_type
= mst_text
;
2196 CORE_ADDR svalue
= ext_in
->asym
.value
;
2198 /* The Irix 5 native tools seem to sometimes generate bogus
2199 external symbols. */
2200 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2202 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2205 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2207 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2212 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2213 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2215 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scNil
)
2218 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2219 switch (ext_in
->asym
.st
)
2222 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2225 ms_type
= mst_file_text
;
2226 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2229 if (ext_in
->asym
.sc
== scCommon
)
2231 /* The value of a common symbol is its size, not its address.
2235 else if (ext_in
->asym
.sc
== scData
2236 || ext_in
->asym
.sc
== scSData
2237 || ext_in
->asym
.sc
== scRData
2238 || ext_in
->asym
.sc
== scPData
2239 || ext_in
->asym
.sc
== scXData
)
2242 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2247 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2251 if (ext_in
->asym
.sc
== scAbs
)
2253 else if (ext_in
->asym
.sc
== scText
2254 || ext_in
->asym
.sc
== scInit
2255 || ext_in
->asym
.sc
== scFini
)
2257 ms_type
= mst_file_text
;
2258 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2260 else if (ext_in
->asym
.sc
== scData
2261 || ext_in
->asym
.sc
== scSData
2262 || ext_in
->asym
.sc
== scRData
2263 || ext_in
->asym
.sc
== scPData
2264 || ext_in
->asym
.sc
== scXData
)
2266 ms_type
= mst_file_data
;
2267 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2271 ms_type
= mst_file_bss
;
2272 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2276 /* The alpha has the section start addresses in stLocal symbols
2277 whose name starts with a `.'. Skip those but complain for all
2278 other stLocal symbols. */
2283 ms_type
= mst_unknown
;
2284 complain (&unknown_ext_complaint
, name
);
2286 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2289 /* Pass 3 over files, over local syms: fill in static symbols */
2290 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2292 struct partial_symtab
*save_pst
;
2296 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2300 fdr_to_pst
[f_idx
].pst
= NULL
;
2304 /* Determine the start address for this object file from the
2305 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2309 if (relocatable
|| textlow
!= 0)
2310 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2314 pst
= start_psymtab_common (objfile
, section_offsets
,
2317 objfile
->global_psymbols
.next
,
2318 objfile
->static_psymbols
.next
);
2319 pst
->read_symtab_private
= ((char *)
2320 obstack_alloc (&objfile
->psymbol_obstack
,
2321 sizeof (struct symloc
)));
2322 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2325 FDR_IDX (pst
) = f_idx
;
2326 CUR_BFD (pst
) = cur_bfd
;
2327 DEBUG_SWAP (pst
) = debug_swap
;
2328 DEBUG_INFO (pst
) = debug_info
;
2329 PENDING_LIST (pst
) = pending_list
;
2331 /* The way to turn this into a symtab is to call... */
2332 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2334 /* Set up language for the pst.
2335 The language from the FDR is used if it is unambigious (e.g. cfront
2336 with native cc and g++ will set the language to C).
2337 Otherwise we have to deduce the language from the filename.
2338 Native ecoff has every header file in a separate FDR, so
2339 deduce_language_from_filename will return language_unknown for
2340 a header file, which is not what we want.
2341 But the FDRs for the header files are after the FDR for the source
2342 file, so we can assign the language of the source file to the
2343 following header files. Then we save the language in the private
2344 pst data so that we can reuse it when building symtabs. */
2345 prev_language
= psymtab_language
;
2349 case langCplusplusV2
:
2350 psymtab_language
= language_cplus
;
2353 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2356 if (psymtab_language
== language_unknown
)
2357 psymtab_language
= prev_language
;
2358 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2360 pst
->texthigh
= pst
->textlow
;
2362 /* For stabs-in-ecoff files, the second symbol must be @stab.
2363 This symbol is emitted by mips-tfile to signal that the
2364 current object file uses encapsulated stabs instead of mips
2365 ecoff for local symbols. (It is the second symbol because
2366 the first symbol is the stFile used to signal the start of a
2368 processing_gcc_compilation
= 0;
2371 (*swap_sym_in
) (cur_bfd
,
2372 ((char *) debug_info
->external_sym
2373 + (fh
->isymBase
+ 1) * external_sym_size
),
2375 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2376 processing_gcc_compilation
= 2;
2379 if (processing_gcc_compilation
!= 0)
2381 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2386 (*swap_sym_in
) (cur_bfd
,
2387 (((char *) debug_info
->external_sym
)
2388 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2390 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2391 if (!ECOFF_IS_STAB (&sh
))
2393 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2398 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2399 if (sh
.st
== stStaticProc
)
2401 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2402 prim_record_minimal_symbol_and_info (namestring
,
2409 procaddr
= sh
.value
;
2411 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2412 (debug_info
->external_aux
2415 (*swap_sym_in
) (cur_bfd
,
2416 ((char *) debug_info
->external_sym
2417 + ((fh
->isymBase
+ isym
- 1)
2418 * external_sym_size
)),
2422 long high
= procaddr
+ sh
.value
;
2424 /* Kludge for Irix 5.2 zero fh->adr. */
2426 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2427 pst
->textlow
= procaddr
;
2428 if (high
> pst
->texthigh
)
2429 pst
->texthigh
= high
;
2432 else if (sh
.st
== stStatic
)
2446 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2447 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2448 prim_record_minimal_symbol_and_info (namestring
,
2457 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2458 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2459 prim_record_minimal_symbol_and_info (namestring
,
2470 #define SET_NAMESTRING() \
2471 namestring = debug_info->ss + fh->issBase + sh.iss
2472 #define CUR_SYMBOL_TYPE type_code
2473 #define CUR_SYMBOL_VALUE sh.value
2474 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2476 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2477 #define HANDLE_RBRAC(val) \
2478 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2479 #include "partial-stab.h"
2484 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2487 enum address_class
class;
2489 (*swap_sym_in
) (cur_bfd
,
2490 ((char *) debug_info
->external_sym
2491 + ((fh
->isymBase
+ cur_sdx
)
2492 * external_sym_size
)),
2495 if (ECOFF_IS_STAB (&sh
))
2501 /* Non absolute static symbols go into the minimal table. */
2502 if (sh
.sc
== scUndefined
|| sh
.sc
== scNil
2503 || (sh
.index
== indexNil
2504 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2506 /* FIXME, premature? */
2511 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2516 /* The value of a stEnd symbol is the displacement from the
2517 corresponding start symbol value, do not relocate it. */
2519 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2526 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2530 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2541 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2542 mst_file_text
, NULL
,
2543 SECT_OFF_TEXT
, objfile
);
2548 /* Usually there is a local and a global stProc symbol
2549 for a function. This means that the function name
2550 has already been entered into the mimimal symbol table
2551 while processing the global symbols in pass 2 above.
2552 One notable exception is the PROGRAM name from
2553 f77 compiled executables, it is only put out as
2554 local stProc symbol, and a global MAIN__ stProc symbol
2555 points to it. It doesn't matter though, as gdb is
2556 still able to find the PROGRAM name via the partial
2557 symbol table, and the MAIN__ symbol via the minimal
2559 if (sh
.st
== stProc
)
2560 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2561 VAR_NAMESPACE
, LOC_BLOCK
,
2562 objfile
->global_psymbols
,
2563 sh
.value
, psymtab_language
, objfile
);
2565 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2566 VAR_NAMESPACE
, LOC_BLOCK
,
2567 objfile
->static_psymbols
,
2568 sh
.value
, psymtab_language
, objfile
);
2570 /* Skip over procedure to next one. */
2571 if (sh
.index
>= hdr
->iauxMax
)
2573 /* Should not happen, but does when cross-compiling
2574 with the MIPS compiler. FIXME -- pull later. */
2575 complain (&index_complaint
, name
);
2576 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2579 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2580 (debug_info
->external_aux
2583 procaddr
= sh
.value
;
2585 if (new_sdx
<= cur_sdx
)
2587 /* This should not happen either... FIXME. */
2588 complain (&aux_index_complaint
, name
);
2589 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2593 (*swap_sym_in
) (cur_bfd
,
2594 ((char *) debug_info
->external_sym
2595 + ((fh
->isymBase
+ cur_sdx
- 1)
2596 * external_sym_size
)),
2601 /* Kludge for Irix 5.2 zero fh->adr. */
2603 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2604 pst
->textlow
= procaddr
;
2606 high
= procaddr
+ sh
.value
;
2607 if (high
> pst
->texthigh
)
2608 pst
->texthigh
= high
;
2611 case stStatic
: /* Variable */
2616 || sh
.sc
== scXData
)
2617 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2618 mst_file_data
, NULL
,
2622 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2629 case stIndirect
:/* Irix5 forward declaration */
2630 /* Skip forward declarations from Irix5 cc */
2633 case stTypedef
:/* Typedef */
2634 /* Skip typedefs for forward declarations and opaque
2635 structs from alpha and mips cc. */
2636 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2638 class = LOC_TYPEDEF
;
2641 case stConstant
: /* Constant decl */
2648 case stBlock
: /* { }, str, un, enum*/
2649 /* Do not create a partial symbol for cc unnamed aggregates
2650 and gcc empty aggregates. */
2651 if ((sh
.sc
== scInfo
|| sh
.sc
== scCommon
)
2653 && sh
.index
!= cur_sdx
+ 2)
2655 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2656 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2657 objfile
->static_psymbols
,
2659 psymtab_language
, objfile
);
2661 handle_psymbol_enumerators (objfile
, fh
, sh
.st
);
2663 /* Skip over the block */
2665 if (new_sdx
<= cur_sdx
)
2667 /* This happens with the Ultrix kernel. */
2668 complain (&block_index_complaint
, name
);
2669 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2674 case stFile
: /* File headers */
2675 case stLabel
: /* Labels */
2676 case stEnd
: /* Ends of files */
2679 case stLocal
: /* Local variables */
2680 /* Normally these are skipped because we skip over
2681 all blocks we see. However, these can occur
2682 as visible symbols in a .h file that contains code. */
2686 /* Both complaints are valid: one gives symbol name,
2687 the other the offending symbol type. */
2688 complain (&unknown_sym_complaint
, name
);
2689 complain (&unknown_st_complaint
, sh
.st
);
2693 /* Use this gdb symbol */
2694 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2695 VAR_NAMESPACE
, class,
2696 objfile
->static_psymbols
, sh
.value
,
2697 psymtab_language
, objfile
);
2699 cur_sdx
++; /* Go to next file symbol */
2702 /* Now do enter the external symbols. */
2703 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2704 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2705 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2706 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2707 for (; --cur_sdx
>= 0; ext_ptr
++)
2709 enum address_class
class;
2714 if (ext_ptr
->ifd
!= f_idx
)
2716 psh
= &ext_ptr
->asym
;
2718 /* Do not add undefined symbols to the partial symbol table. */
2719 if (psh
->sc
== scUndefined
|| psh
->sc
== scNil
)
2722 svalue
= psh
->value
;
2726 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2733 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2737 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2744 /* These are generated for static symbols in .o files,
2749 /* External procedure symbols have been entered
2750 into the minimal symbol table in pass 2 above.
2751 Ignore them, as parse_external will ignore them too. */
2757 complain (&unknown_ext_complaint
,
2758 debug_info
->ssext
+ psh
->iss
);
2759 /* Fall through, pretend it's global. */
2764 name
= debug_info
->ssext
+ psh
->iss
;
2765 ADD_PSYMBOL_ADDR_TO_LIST (name
, strlen (name
),
2766 VAR_NAMESPACE
, class,
2767 objfile
->global_psymbols
,
2769 psymtab_language
, objfile
);
2773 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2774 empty and put on the free list. */
2775 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2776 psymtab_include_list
, includes_used
,
2777 -1, save_pst
->texthigh
,
2778 dependency_list
, dependencies_used
);
2779 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2780 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2782 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2783 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2787 /* Now scan the FDRs for dependencies */
2788 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2790 fh
= f_idx
+ debug_info
->fdr
;
2791 pst
= fdr_to_pst
[f_idx
].pst
;
2793 if (pst
== (struct partial_symtab
*)NULL
)
2796 /* This should catch stabs-in-ecoff. */
2800 /* Skip the first file indirect entry as it is a self dependency
2801 for source files or a reverse .h -> .c dependency for header files. */
2802 pst
->number_of_dependencies
= 0;
2804 ((struct partial_symtab
**)
2805 obstack_alloc (&objfile
->psymbol_obstack
,
2807 * sizeof (struct partial_symtab
*))));
2808 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
2812 (*swap_rfd_in
) (cur_bfd
,
2813 ((char *) debug_info
->external_rfd
2814 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
2816 if (rh
< 0 || rh
>= hdr
->ifdMax
)
2818 complain (&bad_file_number_complaint
, rh
);
2822 /* Skip self dependencies of header files. */
2826 /* Do not add to dependeny list if psymtab was empty. */
2827 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
2829 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
2833 /* Remove the dummy psymtab created for -O3 images above, if it is
2834 still empty, to enable the detection of stripped executables. */
2835 if (objfile
->psymtabs
->next
== NULL
2836 && objfile
->psymtabs
->number_of_dependencies
== 0
2837 && objfile
->psymtabs
->n_global_syms
== 0
2838 && objfile
->psymtabs
->n_static_syms
== 0)
2839 objfile
->psymtabs
= NULL
;
2840 do_cleanups (old_chain
);
2843 /* If the current psymbol has an enumerated type, we need to add
2844 all the the enum constants to the partial symbol table. */
2847 handle_psymbol_enumerators (objfile
, fh
, stype
)
2848 struct objfile
*objfile
;
2852 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2853 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2854 = debug_swap
->swap_sym_in
;
2855 char *ext_sym
= ((char *) debug_info
->external_sym
2856 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
2866 /* It is an enumerated type if the next symbol entry is a stMember
2867 and its auxiliary index is indexNil or its auxiliary entry
2868 is a plain btNil or btVoid. */
2869 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
2870 if (sh
.st
!= stMember
)
2873 if (sh
.index
== indexNil
)
2875 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
2876 &(debug_info
->external_aux
2877 + fh
->iauxBase
+ sh
.index
)->a_ti
,
2879 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
2891 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
2892 if (sh
.st
!= stMember
)
2894 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
2896 /* Note that the value doesn't matter for enum constants
2897 in psymtabs, just in symtabs. */
2898 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2899 VAR_NAMESPACE
, LOC_CONST
,
2900 objfile
->static_psymbols
, 0,
2901 psymtab_language
, objfile
);
2902 ext_sym
+= external_sym_size
;
2907 mdebug_next_symbol_text ()
2912 (*debug_swap
->swap_sym_in
) (cur_bfd
,
2913 ((char *) debug_info
->external_sym
2914 + ((cur_fdr
->isymBase
+ cur_sdx
)
2915 * debug_swap
->external_sym_size
)),
2917 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
2920 /* Ancillary function to psymtab_to_symtab(). Does all the work
2921 for turning the partial symtab PST into a symtab, recurring
2922 first on all dependent psymtabs. The argument FILENAME is
2923 only passed so we can see in debug stack traces what file
2926 This function has a split personality, based on whether the
2927 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
2928 The flow of control and even the memory allocation differs. FIXME. */
2931 psymtab_to_symtab_1 (pst
, filename
)
2932 struct partial_symtab
*pst
;
2935 bfd_size_type external_sym_size
;
2936 bfd_size_type external_pdr_size
;
2937 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
2938 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
2942 struct linetable
*lines
;
2948 /* Read in all partial symbtabs on which this one is dependent.
2949 NOTE that we do have circular dependencies, sigh. We solved
2950 that by setting pst->readin before this point. */
2952 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
2953 if (!pst
->dependencies
[i
]->readin
)
2955 /* Inform about additional files to be read in. */
2958 fputs_filtered (" ", gdb_stdout
);
2960 fputs_filtered ("and ", gdb_stdout
);
2962 printf_filtered ("%s...",
2963 pst
->dependencies
[i
]->filename
);
2964 wrap_here (""); /* Flush output */
2965 gdb_flush (gdb_stdout
);
2967 /* We only pass the filename for debug purposes */
2968 psymtab_to_symtab_1 (pst
->dependencies
[i
],
2969 pst
->dependencies
[i
]->filename
);
2972 /* Do nothing if this is a dummy psymtab. */
2974 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
2975 && pst
->textlow
== 0 && pst
->texthigh
== 0)
2978 /* Now read the symbols for this symtab */
2980 cur_bfd
= CUR_BFD (pst
);
2981 debug_swap
= DEBUG_SWAP (pst
);
2982 debug_info
= DEBUG_INFO (pst
);
2983 pending_list
= PENDING_LIST (pst
);
2984 external_sym_size
= debug_swap
->external_sym_size
;
2985 external_pdr_size
= debug_swap
->external_pdr_size
;
2986 swap_sym_in
= debug_swap
->swap_sym_in
;
2987 swap_pdr_in
= debug_swap
->swap_pdr_in
;
2988 current_objfile
= pst
->objfile
;
2989 cur_fd
= FDR_IDX (pst
);
2990 fh
= ((cur_fd
== -1)
2992 : debug_info
->fdr
+ cur_fd
);
2995 /* See comment in parse_partial_symbols about the @stabs sentinel. */
2996 processing_gcc_compilation
= 0;
2997 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3001 (*swap_sym_in
) (cur_bfd
,
3002 ((char *) debug_info
->external_sym
3003 + (fh
->isymBase
+ 1) * external_sym_size
),
3005 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3008 /* We indicate that this is a GCC compilation so that certain
3009 features will be enabled in stabsread/dbxread. */
3010 processing_gcc_compilation
= 2;
3014 if (processing_gcc_compilation
!= 0)
3019 unsigned long first_off
= 0;
3021 /* This symbol table contains stabs-in-ecoff entries. */
3023 /* Parse local symbols first */
3025 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3027 current_objfile
= NULL
;
3030 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3036 (*swap_sym_in
) (cur_bfd
,
3037 (((char *) debug_info
->external_sym
)
3038 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3040 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3042 if (ECOFF_IS_STAB (&sh
))
3044 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3046 /* We should never get non N_STAB symbols here, but they
3047 should be harmless, so keep process_one_symbol from
3048 complaining about them. */
3049 if (type_code
& N_STAB
)
3051 process_one_symbol (type_code
, 0, valu
, name
,
3052 pst
->section_offsets
, pst
->objfile
);
3054 if (type_code
== N_FUN
)
3056 /* Make up special symbol to contain
3057 procedure specific info */
3058 struct mips_extra_func_info
*e
=
3059 ((struct mips_extra_func_info
*)
3060 obstack_alloc (¤t_objfile
->symbol_obstack
,
3061 sizeof (struct mips_extra_func_info
)));
3062 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3063 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3064 SYMBOL_CLASS (s
) = LOC_CONST
;
3065 SYMBOL_TYPE (s
) = builtin_type_void
;
3066 SYMBOL_VALUE (s
) = (long) e
;
3067 add_symbol_to_list (s
, &local_symbols
);
3070 else if (sh
.st
== stLabel
)
3072 if (sh
.index
== indexNil
)
3074 /* This is what the gcc2_compiled and __gnu_compiled_*
3075 show up as. So don't complain. */
3079 /* Handle encoded stab line number. */
3080 record_line (current_subfile
, sh
.index
, valu
);
3082 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3083 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3084 /* These are generated by gcc-2.x, do not complain */
3087 complain (&stab_unknown_complaint
, name
);
3089 st
= end_symtab (pst
->texthigh
, 0, 0, pst
->objfile
, SECT_OFF_TEXT
);
3092 /* Sort the symbol table now, we are done adding symbols to it.
3093 We must do this before parse_procedure calls lookup_symbol. */
3094 sort_symtab_syms (st
);
3096 /* There used to be a call to sort_blocks here, but this should not
3097 be necessary for stabs symtabs. And as sort_blocks modifies the
3098 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3099 it did the wrong thing if the first procedure in a file was
3100 generated via asm statements. */
3102 /* Fill in procedure info next. */
3104 pdr_ptr
= ((char *) debug_info
->external_pdr
3105 + fh
->ipdFirst
* external_pdr_size
);
3106 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3107 for (; pdr_ptr
< pdr_end
; pdr_ptr
+= external_pdr_size
)
3111 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, &pr
);
3117 parse_procedure (&pr
, st
, first_off
, pst
);
3122 /* This symbol table contains ordinary ecoff entries. */
3124 /* FIXME: doesn't use pst->section_offsets. */
3130 /* How many symbols will we need */
3131 /* FIXME, this does not count enum values. */
3132 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3136 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3140 f_max
+= fh
->csym
+ fh
->cpd
;
3141 maxlines
= 2 * fh
->cline
;
3142 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3144 /* The proper language was already determined when building
3145 the psymtab, use it. */
3146 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3149 psymtab_language
= st
->language
;
3151 lines
= LINETABLE (st
);
3153 /* Get a new lexical context */
3155 push_parse_stack ();
3156 top_stack
->cur_st
= st
;
3157 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3159 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3160 BLOCK_END (top_stack
->cur_block
) = 0;
3161 top_stack
->blocktype
= stFile
;
3162 top_stack
->maxsyms
= 2 * f_max
;
3163 top_stack
->cur_type
= 0;
3164 top_stack
->procadr
= 0;
3165 top_stack
->numargs
= 0;
3172 /* Parse local symbols first */
3173 sym_ptr
= ((char *) debug_info
->external_sym
3174 + fh
->isymBase
* external_sym_size
);
3175 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3176 while (sym_ptr
< sym_end
)
3181 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3182 c
= parse_symbol (&sh
,
3183 debug_info
->external_aux
+ fh
->iauxBase
,
3184 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3185 sym_ptr
+= c
* external_sym_size
;
3188 /* Linenumbers. At the end, check if we can save memory.
3189 parse_lines has to look ahead an arbitrary number of PDR
3190 structures, so we swap them all first. */
3194 struct cleanup
*old_chain
;
3200 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3202 old_chain
= make_cleanup (free
, pr_block
);
3204 pdr_ptr
= ((char *) debug_info
->external_pdr
3205 + fh
->ipdFirst
* external_pdr_size
);
3206 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3210 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3211 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3213 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
);
3214 if (lines
->nitems
< fh
->cline
)
3215 lines
= shrink_linetable (lines
);
3217 /* Fill in procedure info next. */
3219 pdr_in_end
= pdr_in
+ fh
->cpd
;
3220 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3221 parse_procedure (pdr_in
, 0, pr_block
->adr
, pst
);
3223 do_cleanups (old_chain
);
3227 LINETABLE (st
) = lines
;
3229 /* .. and our share of externals.
3230 XXX use the global list to speed up things here. how?
3231 FIXME, Maybe quit once we have found the right number of ext's? */
3232 top_stack
->cur_st
= st
;
3233 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3235 top_stack
->blocktype
= stFile
;
3237 = (debug_info
->symbolic_header
.isymMax
3238 + debug_info
->symbolic_header
.ipdMax
3239 + debug_info
->symbolic_header
.iextMax
);
3241 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3242 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3243 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3245 /* If there are undefined symbols, tell the user.
3246 The alpha has an undefined symbol for every symbol that is
3247 from a shared library, so tell the user only if verbose is on. */
3248 if (info_verbose
&& n_undef_symbols
)
3250 printf_filtered ("File %s contains %d unresolved references:",
3251 st
->filename
, n_undef_symbols
);
3252 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3253 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3254 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3261 /* Sort the symbol table now, we are done adding symbols to it.*/
3262 sort_symtab_syms (st
);
3267 /* Now link the psymtab and the symtab. */
3270 current_objfile
= NULL
;
3273 /* Ancillary parsing procedures. */
3275 /* Return 1 if the symbol pointed to by SH has a cross reference
3276 to an opaque aggregate type, else 0. */
3279 has_opaque_xref (fh
, sh
)
3288 if (sh
->index
== indexNil
)
3291 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3292 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3293 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3297 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3298 if (rn
->rfd
== 0xfff)
3299 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3307 /* Lookup the type at relative index RN. Return it in TPP
3308 if found and in any event come up with its name PNAME.
3309 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3310 Return value says how many aux symbols we ate. */
3313 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3317 enum type_code type_code
; /* Use to alloc new type if none is found. */
3329 struct mdebug_pending
*pend
;
3331 *tpp
= (struct type
*)NULL
;
3333 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3335 /* Escape index means 'the next one' */
3336 if (rn
->rfd
== 0xfff)
3339 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3346 /* mips cc uses a rf of -1 for opaque struct definitions.
3347 Set TYPE_FLAG_STUB for these types so that check_stub_type will
3348 resolve them if the struct gets defined in another compilation unit. */
3351 *pname
= "<undefined>";
3352 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3353 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3357 /* mips cc uses an escaped rn->index of 0 for struct return types
3358 of procedures that were compiled without -g. These will always remain
3360 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3362 *pname
= "<undefined>";
3366 /* Find the relative file descriptor and the symbol in it. */
3367 fh
= get_rfd (fd
, rf
);
3368 xref_fd
= fh
- debug_info
->fdr
;
3370 if (rn
->index
>= fh
->csym
)
3372 /* File indirect entry is corrupt. */
3373 *pname
= "<illegal>";
3374 complain (&bad_rfd_entry_complaint
,
3375 sym_name
, xref_fd
, rn
->index
);
3379 /* If we have processed this symbol then we left a forwarding
3380 pointer to the type in the pending list. If not, we`ll put
3381 it in a list of pending types, to be processed later when
3382 the file will be. In any event, we collect the name for the
3385 esh
= ((char *) debug_info
->external_sym
3386 + ((fh
->isymBase
+ rn
->index
)
3387 * debug_swap
->external_sym_size
));
3388 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3390 /* Make sure that this type of cross reference can be handled. */
3391 if ((sh
.sc
!= scInfo
3392 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3393 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3394 && sh
.st
!= stEnum
))
3395 && (sh
.sc
!= scCommon
|| sh
.st
!= stBlock
))
3397 /* File indirect entry is corrupt. */
3398 *pname
= "<illegal>";
3399 complain (&bad_rfd_entry_complaint
,
3400 sym_name
, xref_fd
, rn
->index
);
3404 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3406 pend
= is_pending_symbol (fh
, esh
);
3411 /* We have not yet seen this type. */
3413 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3417 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3419 a) forward declarations of structs/unions/enums which are not
3420 defined in this compilation unit.
3421 For these the type will be void. This is a bad design decision
3422 as cross referencing across compilation units is impossible
3423 due to the missing name.
3424 b) forward declarations of structs/unions/enums which are defined
3425 later in this file or in another file in the same compilation
3426 unit. Irix5 cc uses a stIndirect symbol for this.
3427 Simply cross reference those again to get the true type.
3428 The forward references are not entered in the pending list and
3429 in the symbol table. */
3431 (*debug_swap
->swap_tir_in
) (bigend
,
3432 &(debug_info
->external_aux
3433 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3435 if (tir
.tq0
!= tqNil
)
3436 complain (&illegal_forward_tq0_complaint
, sym_name
);
3440 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3442 *pname
= "<undefined>";
3449 (debug_info
->external_aux
3450 + fh
->iauxBase
+ sh
.index
+ 1),
3451 tpp
, type_code
, pname
,
3452 fh
->fBigendian
, sym_name
);
3456 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3457 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3463 else if (sh
.st
== stTypedef
)
3465 /* Parse the type for a normal typedef. This might recursively call
3466 cross_ref till we get a non typedef'ed type.
3467 FIXME: This is not correct behaviour, but gdb currently
3468 cannot handle typedefs without type copying. But type copying is
3469 impossible as we might have mutual forward references between
3470 two files and the copied type would not get filled in when
3471 we later parse its definition. */
3472 *tpp
= parse_type (xref_fd
,
3473 debug_info
->external_aux
+ fh
->iauxBase
,
3477 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3481 /* Cross reference to a struct/union/enum which is defined
3482 in another file in the same compilation unit but that file
3483 has not been parsed yet.
3484 Initialize the type only, it will be filled in when
3485 it's definition is parsed. */
3486 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3488 add_pending (fh
, esh
, *tpp
);
3491 /* We used one auxent normally, two if we got a "next one" rf. */
3496 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3497 keeping the symtab sorted */
3499 static struct symbol
*
3500 mylookup_symbol (name
, block
, namespace, class)
3502 register struct block
*block
;
3503 enum namespace namespace;
3504 enum address_class
class;
3506 register int bot
, top
, inc
;
3507 register struct symbol
*sym
;
3510 top
= BLOCK_NSYMS (block
);
3514 sym
= BLOCK_SYM (block
, bot
);
3515 if (SYMBOL_NAME (sym
)[0] == inc
3516 && SYMBOL_NAMESPACE (sym
) == namespace
3517 && SYMBOL_CLASS (sym
) == class
3518 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3522 block
= BLOCK_SUPERBLOCK (block
);
3524 return mylookup_symbol (name
, block
, namespace, class);
3529 /* Add a new symbol S to a block B.
3530 Infrequently, we will need to reallocate the block to make it bigger.
3531 We only detect this case when adding to top_stack->cur_block, since
3532 that's the only time we know how big the block is. FIXME. */
3539 int nsyms
= BLOCK_NSYMS (b
)++;
3540 struct block
*origb
;
3541 struct parse_stack
*stackp
;
3543 if (b
== top_stack
->cur_block
&&
3544 nsyms
>= top_stack
->maxsyms
)
3546 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3547 /* In this case shrink_block is actually grow_block, since
3548 BLOCK_NSYMS(b) is larger than its current size. */
3550 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3552 /* Now run through the stack replacing pointers to the
3553 original block. shrink_block has already done this
3554 for the blockvector and BLOCK_FUNCTION. */
3555 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3557 if (stackp
->cur_block
== origb
)
3559 stackp
->cur_block
= b
;
3560 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3564 BLOCK_SYM (b
, nsyms
) = s
;
3567 /* Add a new block B to a symtab S */
3574 struct blockvector
*bv
= BLOCKVECTOR (s
);
3576 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3577 (sizeof (struct blockvector
)
3578 + BLOCKVECTOR_NBLOCKS (bv
)
3579 * sizeof (bv
->block
)));
3580 if (bv
!= BLOCKVECTOR (s
))
3581 BLOCKVECTOR (s
) = bv
;
3583 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3586 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3587 MIPS' linenumber encoding might need more than one byte
3588 to describe it, LAST is used to detect these continuation lines.
3590 Combining lines with the same line number seems like a bad idea.
3591 E.g: There could be a line number entry with the same line number after the
3592 prologue and GDB should not ignore it (this is a better way to find
3593 a prologue than mips_skip_prologue).
3594 But due to the compressed line table format there are line number entries
3595 for the same line which are needed to bridge the gap to the next
3596 line number entry. These entries have a bogus address info with them
3597 and we are unable to tell them from intended duplicate line number
3599 This is another reason why -ggdb debugging format is preferable. */
3602 add_line (lt
, lineno
, adr
, last
)
3603 struct linetable
*lt
;
3608 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3609 Change them to something sensible. */
3613 last
= -2; /* make sure we record first line */
3615 if (last
== lineno
) /* skip continuation lines */
3618 lt
->item
[lt
->nitems
].line
= lineno
;
3619 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3623 /* Sorting and reordering procedures */
3625 /* Blocks with a smaller low bound should come first */
3628 compare_blocks (arg1
, arg2
)
3632 register int addr_diff
;
3633 struct block
**b1
= (struct block
**) arg1
;
3634 struct block
**b2
= (struct block
**) arg2
;
3636 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3638 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3642 /* Sort the blocks of a symtab S.
3643 Reorder the blocks in the blockvector by code-address,
3644 as required by some MI search routines */
3650 struct blockvector
*bv
= BLOCKVECTOR (s
);
3652 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3655 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3656 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3657 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3658 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3662 * This is very unfortunate: normally all functions are compiled in
3663 * the order they are found, but if the file is compiled -O3 things
3664 * are very different. It would be nice to find a reliable test
3665 * to detect -O3 images in advance.
3667 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3668 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3669 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3670 sizeof (struct block
*),
3674 register CORE_ADDR high
= 0;
3675 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3677 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3678 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3679 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3680 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3683 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3684 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3686 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3687 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3688 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3689 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3693 /* Constructor/restructor/destructor procedures */
3695 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3696 MAXSYMS and linenumbers MAXLINES we'll put in it */
3698 static struct symtab
*
3699 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3703 struct objfile
*objfile
;
3705 struct symtab
*s
= allocate_symtab (name
, objfile
);
3707 LINETABLE (s
) = new_linetable (maxlines
);
3709 /* All symtabs must have at least two blocks */
3710 BLOCKVECTOR (s
) = new_bvect (2);
3711 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3712 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3713 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3714 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3716 s
->free_code
= free_linetable
;
3721 /* Allocate a new partial_symtab NAME */
3723 static struct partial_symtab
*
3724 new_psymtab (name
, objfile
, section_offsets
)
3726 struct objfile
*objfile
;
3727 struct section_offsets
*section_offsets
;
3729 struct partial_symtab
*psymtab
;
3731 psymtab
= allocate_psymtab (name
, objfile
);
3732 psymtab
->section_offsets
= section_offsets
;
3734 /* Keep a backpointer to the file's symbols */
3736 psymtab
->read_symtab_private
= ((char *)
3737 obstack_alloc (&objfile
->psymbol_obstack
,
3738 sizeof (struct symloc
)));
3739 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
3740 CUR_BFD (psymtab
) = cur_bfd
;
3741 DEBUG_SWAP (psymtab
) = debug_swap
;
3742 DEBUG_INFO (psymtab
) = debug_info
;
3743 PENDING_LIST (psymtab
) = pending_list
;
3745 /* The way to turn this into a symtab is to call... */
3746 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
3751 /* Allocate a linetable array of the given SIZE. Since the struct
3752 already includes one item, we subtract one when calculating the
3753 proper size to allocate. */
3755 static struct linetable
*
3756 new_linetable (size
)
3759 struct linetable
*l
;
3761 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
3762 l
= (struct linetable
*) xmalloc (size
);
3767 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
3768 I am not so sure about the 3.4 ones.
3770 Since the struct linetable already includes one item, we subtract one when
3771 calculating the proper size to allocate. */
3773 static struct linetable
*
3774 shrink_linetable (lt
)
3775 struct linetable
*lt
;
3778 return (struct linetable
*) xrealloc ((PTR
) lt
,
3779 (sizeof (struct linetable
)
3781 * sizeof (lt
->item
))));
3784 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
3786 static struct blockvector
*
3790 struct blockvector
*bv
;
3793 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
3794 bv
= (struct blockvector
*) xzalloc (size
);
3796 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
3801 /* Allocate and zero a new block of MAXSYMS symbols */
3803 static struct block
*
3807 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
3809 return (struct block
*) xzalloc (size
);
3812 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
3813 Shrink_block can also be used by add_symbol to grow a block. */
3815 static struct block
*
3821 struct blockvector
*bv
= BLOCKVECTOR (s
);
3824 /* Just reallocate it and fix references to the old one */
3826 new = (struct block
*) xrealloc ((PTR
) b
,
3827 (sizeof (struct block
)
3828 + ((BLOCK_NSYMS (b
) - 1)
3829 * sizeof (struct symbol
*))));
3831 /* Should chase pointers to old one. Fortunately, that`s just
3832 the block`s function and inferior blocks */
3833 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
3834 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
3835 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
3836 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
3837 BLOCKVECTOR_BLOCK (bv
, i
) = new;
3838 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
3839 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
3843 /* Create a new symbol with printname NAME */
3845 static struct symbol
*
3849 struct symbol
*s
= ((struct symbol
*)
3850 obstack_alloc (¤t_objfile
->symbol_obstack
,
3851 sizeof (struct symbol
)));
3853 memset ((PTR
) s
, 0, sizeof (*s
));
3854 SYMBOL_NAME (s
) = name
;
3855 SYMBOL_LANGUAGE (s
) = psymtab_language
;
3856 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
3860 /* Create a new type with printname NAME */
3862 static struct type
*
3868 t
= alloc_type (current_objfile
);
3869 TYPE_NAME (t
) = name
;
3870 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
3874 /* Read ECOFF debugging information from a BFD section. This is
3875 called from elfread.c. It parses the section into a
3876 ecoff_debug_info struct, and then lets the rest of the file handle
3880 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
3881 struct objfile
*objfile
;
3882 const struct ecoff_debug_swap
*swap
;
3884 struct section_offsets
*section_offsets
;
3886 bfd
*abfd
= objfile
->obfd
;
3887 struct ecoff_debug_info
*info
;
3889 info
= ((struct ecoff_debug_info
*)
3890 obstack_alloc (&objfile
->psymbol_obstack
,
3891 sizeof (struct ecoff_debug_info
)));
3893 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
3894 error ("Error reading ECOFF debugging information: %s",
3895 bfd_errmsg (bfd_get_error ()));
3897 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
3901 /* Things used for calling functions in the inferior.
3902 These functions are exported to our companion
3903 mips-tdep.c file and are here because they play
3904 with the symbol-table explicitly. */
3906 /* Sigtramp: make sure we have all the necessary information
3907 about the signal trampoline code. Since the official code
3908 from MIPS does not do so, we make up that information ourselves.
3909 If they fix the library (unlikely) this code will neutralize itself. */
3911 /* FIXME: This function is called only by mips-tdep.c. It needs to be
3912 here because it calls functions defined in this file, but perhaps
3913 this could be handled in a better way. */
3920 struct block
*b
, *b0
= NULL
;
3922 sigtramp_address
= -1;
3924 /* We have to handle the following cases here:
3925 a) The Mips library has a sigtramp label within sigvec.
3926 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
3927 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
3930 b0
= SYMBOL_BLOCK_VALUE (s
);
3931 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
3935 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
3936 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
3939 /* But maybe this program uses its own version of sigvec */
3943 /* Did we or MIPSco fix the library ? */
3944 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
3946 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
3947 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
3951 sigtramp_address
= SYMBOL_VALUE (s
);
3952 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
3954 /* But what symtab does it live in ? */
3955 st
= find_pc_symtab (SYMBOL_VALUE (s
));
3958 * Ok, there goes the fix: turn it into a procedure, with all the
3959 * needed info. Note we make it a nested procedure of sigvec,
3960 * which is the way the (assembly) code is actually written.
3962 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
3963 SYMBOL_CLASS (s
) = LOC_BLOCK
;
3964 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
3966 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = builtin_type_void
;
3968 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
3970 SYMBOL_BLOCK_VALUE (s
) = b
;
3971 BLOCK_START (b
) = sigtramp_address
;
3972 BLOCK_END (b
) = sigtramp_end
;
3973 BLOCK_FUNCTION (b
) = s
;
3974 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
3978 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
3980 struct mips_extra_func_info
*e
=
3981 ((struct mips_extra_func_info
*)
3982 xzalloc (sizeof (struct mips_extra_func_info
)));
3984 e
->numargs
= 0; /* the kernel thinks otherwise */
3985 e
->pdr
.frameoffset
= 32;
3986 e
->pdr
.framereg
= SP_REGNUM
;
3987 /* Note that setting pcreg is no longer strictly necessary as
3988 mips_frame_saved_pc is now aware of signal handler frames. */
3989 e
->pdr
.pcreg
= PC_REGNUM
;
3990 e
->pdr
.regmask
= -2;
3991 /* Offset to saved r31, in the sigtramp case the saved registers
3992 are above the frame in the sigcontext.
3993 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
3994 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
3995 and 32 * 4 bytes for the floating point registers. */
3996 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
3997 e
->pdr
.fregmask
= -1;
3998 /* Offset to saved f30 (first saved *double* register). */
3999 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4000 e
->pdr
.isym
= (long) s
;
4001 e
->pdr
.adr
= sigtramp_address
;
4003 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4004 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4005 SYMBOL_VALUE (s
) = (long) e
;
4006 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4007 SYMBOL_CLASS (s
) = LOC_CONST
;
4008 SYMBOL_TYPE (s
) = builtin_type_void
;
4009 current_objfile
= NULL
;
4012 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4016 _initialize_mdebugread ()
4018 /* Missing basic types */
4020 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4022 mdebug_type_string
=
4023 init_type (TYPE_CODE_STRING
,
4024 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4026 (struct objfile
*) NULL
);
4028 mdebug_type_complex
=
4029 init_type (TYPE_CODE_ERROR
,
4030 TARGET_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
4032 (struct objfile
*) NULL
);
4033 mdebug_type_double_complex
=
4034 init_type (TYPE_CODE_ERROR
,
4035 TARGET_DOUBLE_COMPLEX_BIT
/ TARGET_CHAR_BIT
,
4036 0, "double complex",
4037 (struct objfile
*) NULL
);
4039 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4040 good? Would we be better off with TYPE_CODE_ERROR? Should
4041 TYPE_CODE_ERROR print things in hex if it knows the size? */
4042 mdebug_type_fixed_dec
=
4043 init_type (TYPE_CODE_INT
,
4044 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4046 (struct objfile
*) NULL
);
4048 mdebug_type_float_dec
=
4049 init_type (TYPE_CODE_ERROR
,
4050 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4051 0, "floating decimal",
4052 (struct objfile
*) NULL
);