1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
50 #include "stabsread.h"
51 #include "complaints.h"
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>
81 #include "gdb_string.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 /* We put a pointer to this structure in the read_symtab_private field
106 /* Index of the FDR that this psymtab represents. */
108 /* The BFD that the psymtab was created from. */
110 const struct ecoff_debug_swap
*debug_swap
;
111 struct ecoff_debug_info
*debug_info
;
112 struct mdebug_pending
**pending_list
;
113 /* Pointer to external symbols for this file. */
115 /* Size of extern_tab. */
117 enum language pst_language
;
120 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
121 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
122 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
123 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
124 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
125 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
127 /* Things we import explicitly from other modules */
129 extern int info_verbose
;
131 /* Various complaints about symbol reading that don't abort the process */
133 static struct complaint bad_file_number_complaint
=
134 {"bad file number %d", 0, 0};
136 static struct complaint index_complaint
=
137 {"bad aux index at symbol %s", 0, 0};
139 static struct complaint aux_index_complaint
=
140 {"bad proc end in aux found from symbol %s", 0, 0};
142 static struct complaint block_index_complaint
=
143 {"bad aux index at block symbol %s", 0, 0};
145 static struct complaint unknown_ext_complaint
=
146 {"unknown external symbol %s", 0, 0};
148 static struct complaint unknown_sym_complaint
=
149 {"unknown local symbol %s", 0, 0};
151 static struct complaint unknown_st_complaint
=
152 {"with type %d", 0, 0};
154 static struct complaint block_overflow_complaint
=
155 {"block containing %s overfilled", 0, 0};
157 static struct complaint basic_type_complaint
=
158 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
160 static struct complaint unknown_type_qual_complaint
=
161 {"unknown type qualifier 0x%x", 0, 0};
163 static struct complaint array_index_type_complaint
=
164 {"illegal array index type for %s, assuming int", 0, 0};
166 static struct complaint bad_tag_guess_complaint
=
167 {"guessed tag type of %s incorrectly", 0, 0};
169 static struct complaint block_member_complaint
=
170 {"declaration block contains unhandled symbol type %d", 0, 0};
172 static struct complaint stEnd_complaint
=
173 {"stEnd with storage class %d not handled", 0, 0};
175 static struct complaint unknown_mdebug_symtype_complaint
=
176 {"unknown symbol type 0x%x", 0, 0};
178 static struct complaint stab_unknown_complaint
=
179 {"unknown stabs symbol %s", 0, 0};
181 static struct complaint pdr_for_nonsymbol_complaint
=
182 {"PDR for %s, but no symbol", 0, 0};
184 static struct complaint pdr_static_symbol_complaint
=
185 {"can't handle PDR for static proc at 0x%lx", 0, 0};
187 static struct complaint bad_setjmp_pdr_complaint
=
188 {"fixing bad setjmp PDR from libc", 0, 0};
190 static struct complaint bad_fbitfield_complaint
=
191 {"can't handle TIR fBitfield for %s", 0, 0};
193 static struct complaint bad_continued_complaint
=
194 {"illegal TIR continued for %s", 0, 0};
196 static struct complaint bad_rfd_entry_complaint
=
197 {"bad rfd entry for %s: file %d, index %d", 0, 0};
199 static struct complaint unexpected_type_code_complaint
=
200 {"unexpected type code for %s", 0, 0};
202 static struct complaint unable_to_cross_ref_complaint
=
203 {"unable to cross ref btTypedef for %s", 0, 0};
205 static struct complaint bad_indirect_xref_complaint
=
206 {"unable to cross ref btIndirect for %s", 0, 0};
208 static struct complaint illegal_forward_tq0_complaint
=
209 {"illegal tq0 in forward typedef for %s", 0, 0};
211 static struct complaint illegal_forward_bt_complaint
=
212 {"illegal bt %d in forward typedef for %s", 0, 0};
214 static struct complaint bad_linetable_guess_complaint
=
215 {"guessed size of linetable for %s incorrectly", 0, 0};
217 static struct complaint bad_ext_ifd_complaint
=
218 {"bad ifd for external symbol: %d (max %d)", 0, 0};
220 static struct complaint bad_ext_iss_complaint
=
221 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
223 /* Macros and extra defs */
225 /* Puns: hard to find whether -g was used and how */
227 #define MIN_GLEVEL GLEVEL_0
228 #define compare_glevel(a,b) \
229 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
230 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
232 /* Things that really are local to this module */
234 /* Remember what we deduced to be the source language of this psymtab. */
236 static enum language psymtab_language
= language_unknown
;
242 /* How to parse debugging information for CUR_BFD. */
244 static const struct ecoff_debug_swap
*debug_swap
;
246 /* Pointers to debugging information for CUR_BFD. */
248 static struct ecoff_debug_info
*debug_info
;
250 /* Pointer to current file decriptor record, and its index */
255 /* Index of current symbol */
259 /* Note how much "debuggable" this image is. We would like
260 to see at least one FDR with full symbols */
265 /* When examining .o files, report on undefined symbols */
267 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
269 /* Pseudo symbol to use when putting stabs into the symbol table. */
271 static char stabs_symbol
[] = STABS_SYMBOL
;
273 /* Types corresponding to mdebug format bt* basic types. */
275 static struct type
*mdebug_type_void
;
276 static struct type
*mdebug_type_char
;
277 static struct type
*mdebug_type_short
;
278 static struct type
*mdebug_type_int_32
;
279 #define mdebug_type_int mdebug_type_int_32
280 static struct type
*mdebug_type_int_64
;
281 static struct type
*mdebug_type_long_32
;
282 static struct type
*mdebug_type_long_64
;
283 static struct type
*mdebug_type_long_long_64
;
284 static struct type
*mdebug_type_unsigned_char
;
285 static struct type
*mdebug_type_unsigned_short
;
286 static struct type
*mdebug_type_unsigned_int_32
;
287 static struct type
*mdebug_type_unsigned_int_64
;
288 static struct type
*mdebug_type_unsigned_long_32
;
289 static struct type
*mdebug_type_unsigned_long_64
;
290 static struct type
*mdebug_type_unsigned_long_long_64
;
291 static struct type
*mdebug_type_adr_32
;
292 static struct type
*mdebug_type_adr_64
;
293 static struct type
*mdebug_type_float
;
294 static struct type
*mdebug_type_double
;
295 static struct type
*mdebug_type_complex
;
296 static struct type
*mdebug_type_double_complex
;
297 static struct type
*mdebug_type_fixed_dec
;
298 static struct type
*mdebug_type_float_dec
;
299 static struct type
*mdebug_type_string
;
301 /* Types for symbols from files compiled without debugging info. */
303 static struct type
*nodebug_func_symbol_type
;
304 static struct type
*nodebug_var_symbol_type
;
306 /* Nonzero if we have seen ecoff debugging info for a file. */
308 static int found_ecoff_debugging_info
;
310 /* Forward declarations */
313 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
316 parse_partial_symbols
PARAMS ((struct objfile
*,
317 struct section_offsets
*));
320 *get_rfd
PARAMS ((int, int));
323 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
326 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
327 char **, int, char *));
329 static struct symbol
*
330 new_symbol
PARAMS ((char *));
333 new_type
PARAMS ((char *));
335 static struct block
*
336 new_block
PARAMS ((int));
338 static struct symtab
*
339 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
341 static struct linetable
*
342 new_linetable
PARAMS ((int));
344 static struct blockvector
*
345 new_bvect
PARAMS ((int));
348 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
351 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
353 static struct symbol
*
354 mylookup_symbol
PARAMS ((char *, struct block
*, enum namespace,
355 enum address_class
));
357 static struct block
*
358 shrink_block
PARAMS ((struct block
*, struct symtab
*));
361 xzalloc
PARAMS ((unsigned int));
364 sort_blocks
PARAMS ((struct symtab
*));
367 compare_blocks
PARAMS ((const void *, const void *));
369 static struct partial_symtab
*
370 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
373 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
376 add_block
PARAMS ((struct block
*, struct symtab
*));
379 add_symbol
PARAMS ((struct symbol
*, struct block
*));
382 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
384 static struct linetable
*
385 shrink_linetable
PARAMS ((struct linetable
*));
388 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int));
391 mdebug_next_symbol_text
PARAMS ((void));
393 /* Address bounds for the signal trampoline in inferior, if any */
395 CORE_ADDR sigtramp_address
, sigtramp_end
;
397 /* Allocate zeroed memory */
403 PTR p
= xmalloc (size
);
409 /* Exported procedure: Builds a symtab from the PST partial one.
410 Restores the environment in effect when PST was created, delegates
411 most of the work to an ancillary procedure, and sorts
412 and reorders the symtab list at the end */
415 mdebug_psymtab_to_symtab (pst
)
416 struct partial_symtab
*pst
;
424 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
425 gdb_flush (gdb_stdout
);
428 next_symbol_text_func
= mdebug_next_symbol_text
;
430 psymtab_to_symtab_1 (pst
, pst
->filename
);
432 /* Match with global symbols. This only needs to be done once,
433 after all of the symtabs and dependencies have been read in. */
434 scan_file_globals (pst
->objfile
);
437 printf_filtered ("done.\n");
440 /* File-level interface functions */
442 /* Find a file descriptor given its index RF relative to a file CF */
452 fdrs
= debug_info
->fdr
;
454 /* Object files do not have the RFD table, all refs are absolute */
457 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
458 ((char *) debug_info
->external_rfd
460 * debug_swap
->external_rfd_size
)),
465 /* Return a safer print NAME for a file descriptor */
472 return "<stripped file>";
475 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
479 /* Read in and parse the symtab of the file OBJFILE. Symbols from
480 different sections are relocated via the SECTION_OFFSETS. */
483 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
484 struct objfile
*objfile
;
485 const struct ecoff_debug_swap
*swap
;
486 struct ecoff_debug_info
*info
;
487 struct section_offsets
*section_offsets
;
489 cur_bfd
= objfile
->obfd
;
493 /* Make sure all the FDR information is swapped in. */
494 if (info
->fdr
== (FDR
*) NULL
)
500 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
501 (info
->symbolic_header
.ifdMax
503 fdr_src
= info
->external_fdr
;
505 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
507 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
508 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
511 parse_partial_symbols (objfile
, section_offsets
);
514 /* Check to make sure file was compiled with -g. If not, warn the
515 user of this limitation. */
516 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
518 if (max_gdbinfo
== 0)
519 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
521 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
522 gdb_flush (gdb_stdout
);
527 /* Local utilities */
529 /* Map of FDR indexes to partial symtabs */
533 struct partial_symtab
*pst
; /* the psymtab proper */
534 long n_globals
; /* exported globals (external symbols) */
535 long globals_offset
; /* cumulative */
539 /* Utility stack, used to nest procedures and blocks properly.
540 It is a doubly linked list, to avoid too many alloc/free.
541 Since we might need it quite a few times it is NOT deallocated
544 static struct parse_stack
546 struct parse_stack
*next
, *prev
;
547 struct symtab
*cur_st
; /* Current symtab. */
548 struct block
*cur_block
; /* Block in it. */
550 /* What are we parsing. stFile, or stBlock are for files and
551 blocks. stProc or stStaticProc means we have seen the start of a
552 procedure, but not the start of the block within in. When we see
553 the start of that block, we change it to stNil, without pushing a
554 new block, i.e. stNil means both a procedure and a block. */
558 int maxsyms
; /* Max symbols in this block. */
559 struct type
*cur_type
; /* Type we parse fields for. */
560 int cur_field
; /* Field number in cur_type. */
561 CORE_ADDR procadr
; /* Start addres of this procedure */
562 int numargs
; /* Its argument count */
565 *top_stack
; /* Top stack ptr */
568 /* Enter a new lexical context */
573 struct parse_stack
*new;
575 /* Reuse frames if possible */
576 if (top_stack
&& top_stack
->prev
)
577 new = top_stack
->prev
;
579 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
580 /* Initialize new frame with previous content */
583 register struct parse_stack
*prev
= new->prev
;
586 top_stack
->prev
= new;
588 new->next
= top_stack
;
593 /* Exit a lexical context */
601 top_stack
= top_stack
->next
;
605 /* Cross-references might be to things we haven't looked at
606 yet, e.g. type references. To avoid too many type
607 duplications we keep a quick fixup table, an array
608 of lists of references indexed by file descriptor */
610 struct mdebug_pending
612 struct mdebug_pending
*next
; /* link */
613 char *s
; /* the unswapped symbol */
614 struct type
*t
; /* its partial type descriptor */
618 /* The pending information is kept for an entire object file, and used
619 to be in the sym_private field. I took it out when I split
620 mdebugread from mipsread, because this might not be the only type
621 of symbols read from an object file. Instead, we allocate the
622 pending information table when we create the partial symbols, and
623 we store a pointer to the single table in each psymtab. */
625 static struct mdebug_pending
**pending_list
;
627 /* Check whether we already saw symbol SH in file FH */
629 static struct mdebug_pending
*
630 is_pending_symbol (fh
, sh
)
634 int f_idx
= fh
- debug_info
->fdr
;
635 register struct mdebug_pending
*p
;
637 /* Linear search is ok, list is typically no more than 10 deep */
638 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
644 /* Add a new symbol SH of type T */
647 add_pending (fh
, sh
, t
)
652 int f_idx
= fh
- debug_info
->fdr
;
653 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
655 /* Make sure we do not make duplicates */
658 p
= ((struct mdebug_pending
*)
659 obstack_alloc (¤t_objfile
->psymbol_obstack
,
660 sizeof (struct mdebug_pending
)));
663 p
->next
= pending_list
[f_idx
];
664 pending_list
[f_idx
] = p
;
669 /* Parsing Routines proper. */
671 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
672 For blocks, procedures and types we open a new lexical context.
673 This is basically just a big switch on the symbol's type. Argument
674 AX is the base pointer of aux symbols for this file (fh->iauxBase).
675 EXT_SH points to the unswapped symbol, which is needed for struct,
676 union, etc., types; it is NULL for an EXTR. BIGEND says whether
677 aux symbols are big-endian or little-endian. Return count of
678 SYMR's handled (normally one). */
681 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
686 struct section_offsets
*section_offsets
;
688 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
689 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
690 debug_swap
->swap_sym_in
;
694 struct mdebug_pending
*pend
;
698 enum address_class
class;
700 long svalue
= sh
->value
;
703 if (ext_sh
== (char *) NULL
)
704 name
= debug_info
->ssext
+ sh
->iss
;
706 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
711 /* Do not relocate relative values.
712 The value of a stEnd symbol is the displacement from the
713 corresponding start symbol value.
714 The value of a stBlock symbol is the displacement from the
715 procedure address. */
716 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
717 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
724 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
728 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
737 case stGlobal
: /* external symbol, goes into global block */
739 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
741 s
= new_symbol (name
);
742 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
745 case stStatic
: /* static data, goes into current block. */
747 b
= top_stack
->cur_block
;
748 s
= new_symbol (name
);
749 if (sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
751 /* It is a FORTRAN common block. At least for SGI Fortran the
752 address is not in the symbol; we need to fix it later in
753 scan_file_globals. */
754 int bucket
= hashname (SYMBOL_NAME (s
));
755 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
756 global_sym_chain
[bucket
] = s
;
759 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
762 case stLocal
: /* local variable, goes into current block */
763 if (sh
->sc
== scRegister
)
765 class = LOC_REGISTER
;
766 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
770 b
= top_stack
->cur_block
;
771 s
= new_symbol (name
);
772 SYMBOL_VALUE (s
) = svalue
;
774 data
: /* Common code for symbols describing data */
775 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
776 SYMBOL_CLASS (s
) = class;
779 /* Type could be missing if file is compiled without debugging info. */
780 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
|| sh
->index
== indexNil
)
781 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
783 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
784 /* Value of a data symbol is its memory address */
787 case stParam
: /* arg to procedure, goes into current block */
789 found_ecoff_debugging_info
= 1;
790 top_stack
->numargs
++;
792 /* Special GNU C++ name. */
793 if (name
[0] == CPLUS_MARKER
&& name
[1] == 't' && name
[2] == 0)
794 name
= "this"; /* FIXME, not alloc'd in obstack */
795 s
= new_symbol (name
);
797 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
801 /* Pass by value in register. */
802 SYMBOL_CLASS(s
) = LOC_REGPARM
;
803 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
806 /* Pass by reference on stack. */
807 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
810 /* Pass by reference in register. */
811 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
812 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
815 /* Pass by value on stack. */
816 SYMBOL_CLASS(s
) = LOC_ARG
;
819 SYMBOL_VALUE (s
) = svalue
;
820 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
821 add_symbol (s
, top_stack
->cur_block
);
824 case stLabel
: /* label, goes into current block */
825 s
= new_symbol (name
);
826 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
827 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
828 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
829 SYMBOL_TYPE (s
) = mdebug_type_int
;
830 add_symbol (s
, top_stack
->cur_block
);
833 case stProc
: /* Procedure, usually goes into global block */
834 case stStaticProc
: /* Static procedure, goes into current block */
835 s
= new_symbol (name
);
836 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
837 SYMBOL_CLASS (s
) = LOC_BLOCK
;
838 /* Type of the return value */
839 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
842 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
843 b
= top_stack
->cur_block
;
844 if (sh
->st
== stProc
)
846 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
847 /* The next test should normally be true, but provides a
848 hook for nested functions (which we don't want to make
850 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
851 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
852 /* Irix 5 sometimes has duplicate names for the same
853 function. We want to add such names up at the global
854 level, not as a nested function. */
855 else if (sh
->value
== top_stack
->procadr
)
856 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
860 /* Make a type for the procedure itself */
861 SYMBOL_TYPE (s
) = lookup_function_type (t
);
863 /* Create and enter a new lexical context */
864 b
= new_block (top_stack
->maxsyms
);
865 SYMBOL_BLOCK_VALUE (s
) = b
;
866 BLOCK_FUNCTION (b
) = s
;
867 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
868 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
869 add_block (b
, top_stack
->cur_st
);
871 /* Not if we only have partial info */
872 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
876 top_stack
->cur_block
= b
;
877 top_stack
->blocktype
= sh
->st
;
878 top_stack
->cur_type
= SYMBOL_TYPE (s
);
879 top_stack
->cur_field
= -1;
880 top_stack
->procadr
= sh
->value
;
881 top_stack
->numargs
= 0;
884 /* Beginning of code for structure, union, and enum definitions.
885 They all share a common set of local variables, defined here. */
887 enum type_code type_code
;
893 case stStruct
: /* Start a block defining a struct type */
894 type_code
= TYPE_CODE_STRUCT
;
895 goto structured_common
;
897 case stUnion
: /* Start a block defining a union type */
898 type_code
= TYPE_CODE_UNION
;
899 goto structured_common
;
901 case stEnum
: /* Start a block defining an enum type */
902 type_code
= TYPE_CODE_ENUM
;
903 goto structured_common
;
905 case stBlock
: /* Either a lexical block, or some type */
906 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
&& sh
->sc
!= scSCommon
)
907 goto case_stBlock_code
; /* Lexical block */
909 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
911 /* Common code for handling struct, union, enum, and/or as-yet-
912 unknown-type blocks of info about structured data. `type_code'
913 has been set to the proper TYPE_CODE, if we know it. */
915 found_ecoff_debugging_info
= 1;
917 top_stack
->blocktype
= stBlock
;
919 /* First count the number of fields and the highest value. */
922 for (ext_tsym
= ext_sh
+ external_sym_size
;
924 ext_tsym
+= external_sym_size
)
928 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
936 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
937 /* If the type of the member is Nil (or Void),
938 without qualifiers, assume the tag is an
940 if (tsym
.index
== indexNil
)
941 type_code
= TYPE_CODE_ENUM
;
944 (*debug_swap
->swap_tir_in
) (bigend
,
945 &ax
[tsym
.index
].a_ti
,
947 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
949 type_code
= TYPE_CODE_ENUM
;
952 if (tsym
.value
> max_value
)
953 max_value
= tsym
.value
;
962 /* This is a no-op; is it trying to tell us something
963 we should be checking? */
964 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
968 /* This is something like a struct within a
969 struct. Skip over the fields of the inner
970 struct. The -1 is because the for loop will
971 increment ext_tsym. */
972 ext_tsym
= ((char *) debug_info
->external_sym
973 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
974 * external_sym_size
));
980 /* mips cc puts out a typedef for struct x if it is not yet
981 defined when it encounters
982 struct y { struct x *xp; };
987 /* Irix5 cc puts out a stIndirect for struct x if it is not
988 yet defined when it encounters
989 struct y { struct x *xp; };
994 complain (&block_member_complaint
, tsym
.st
);
999 /* In an stBlock, there is no way to distinguish structs,
1000 unions, and enums at this point. This is a bug in the
1001 original design (that has been fixed with the recent
1002 addition of the stStruct, stUnion, and stEnum symbol
1003 types.) The way you can tell is if/when you see a variable
1004 or field of that type. In that case the variable's type
1005 (in the AUX table) says if the type is struct, union, or
1006 enum, and points back to the stBlock here. So you can
1007 patch the tag kind up later - but only if there actually is
1008 a variable or field of that type.
1010 So until we know for sure, we will guess at this point.
1012 If the first member has index==indexNil or a void type,
1013 assume we have an enumeration.
1014 Otherwise, if there is more than one member, and all
1015 the members have offset 0, assume we have a union.
1016 Otherwise, assume we have a struct.
1018 The heuristic could guess wrong in the case of of an
1019 enumeration with no members or a union with one (or zero)
1020 members, or when all except the last field of a struct have
1021 width zero. These are uncommon and/or illegal situations,
1022 and in any case guessing wrong probably doesn't matter
1025 But if we later do find out we were wrong, we fixup the tag
1026 kind. Members of an enumeration must be handled
1027 differently from struct/union fields, and that is harder to
1028 patch up, but luckily we shouldn't need to. (If there are
1029 any enumeration members, we can tell for sure it's an enum
1032 if (type_code
== TYPE_CODE_UNDEF
)
1033 if (nfields
> 1 && max_value
== 0)
1034 type_code
= TYPE_CODE_UNION
;
1036 type_code
= TYPE_CODE_STRUCT
;
1038 /* Create a new type or use the pending type. */
1039 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1040 if (pend
== (struct mdebug_pending
*) NULL
)
1042 t
= new_type (NULL
);
1043 add_pending (cur_fdr
, ext_sh
, t
);
1048 /* Do not set the tag name if it is a compiler generated tag name
1049 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1050 Alpha cc puts out an sh->iss of zero for those. */
1051 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1052 TYPE_TAG_NAME (t
) = NULL
;
1054 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1057 TYPE_CODE (t
) = type_code
;
1058 TYPE_LENGTH (t
) = sh
->value
;
1059 TYPE_NFIELDS (t
) = nfields
;
1060 TYPE_FIELDS (t
) = f
= ((struct field
*)
1062 nfields
* sizeof (struct field
)));
1064 if (type_code
== TYPE_CODE_ENUM
)
1066 int unsigned_enum
= 1;
1068 /* This is a non-empty enum. */
1070 /* DEC c89 has the number of enumerators in the sh.value field,
1071 not the type length, so we have to compensate for that
1072 incompatibility quirk.
1073 This might do the wrong thing for an enum with one or two
1074 enumerators and gcc -gcoff -fshort-enums, but these cases
1075 are hopefully rare enough.
1076 Alpha cc -migrate has a sh.value field of zero, we adjust
1078 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1079 || TYPE_LENGTH (t
) == 0)
1080 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1081 for (ext_tsym
= ext_sh
+ external_sym_size
;
1083 ext_tsym
+= external_sym_size
)
1086 struct symbol
*enum_sym
;
1088 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1090 if (tsym
.st
!= stMember
)
1093 f
->bitpos
= tsym
.value
;
1095 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1098 enum_sym
= ((struct symbol
*)
1099 obstack_alloc (¤t_objfile
->symbol_obstack
,
1100 sizeof (struct symbol
)));
1101 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1102 SYMBOL_NAME (enum_sym
) = f
->name
;
1103 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1104 SYMBOL_TYPE (enum_sym
) = t
;
1105 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1106 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1107 if (SYMBOL_VALUE (enum_sym
) < 0)
1109 add_symbol (enum_sym
, top_stack
->cur_block
);
1111 /* Skip the stMembers that we've handled. */
1116 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1118 /* make this the current type */
1119 top_stack
->cur_type
= t
;
1120 top_stack
->cur_field
= 0;
1122 /* Do not create a symbol for alpha cc unnamed structs. */
1126 /* gcc puts out an empty struct for an opaque struct definitions,
1127 do not create a symbol for it either. */
1128 if (TYPE_NFIELDS (t
) == 0)
1130 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1134 s
= new_symbol (name
);
1135 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1136 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1137 SYMBOL_VALUE (s
) = 0;
1138 SYMBOL_TYPE (s
) = t
;
1139 add_symbol (s
, top_stack
->cur_block
);
1142 /* End of local variables shared by struct, union, enum, and
1143 block (as yet unknown struct/union/enum) processing. */
1147 found_ecoff_debugging_info
= 1;
1148 /* beginnning of (code) block. Value of symbol
1149 is the displacement from procedure start */
1150 push_parse_stack ();
1152 /* Do not start a new block if this is the outermost block of a
1153 procedure. This allows the LOC_BLOCK symbol to point to the
1154 block with the local variables, so funcname::var works. */
1155 if (top_stack
->blocktype
== stProc
1156 || top_stack
->blocktype
== stStaticProc
)
1158 top_stack
->blocktype
= stNil
;
1162 top_stack
->blocktype
= stBlock
;
1163 b
= new_block (top_stack
->maxsyms
);
1164 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1165 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1166 top_stack
->cur_block
= b
;
1167 add_block (b
, top_stack
->cur_st
);
1170 case stEnd
: /* end (of anything) */
1171 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
1173 /* Finished with type */
1174 top_stack
->cur_type
= 0;
1176 else if (sh
->sc
== scText
&&
1177 (top_stack
->blocktype
== stProc
||
1178 top_stack
->blocktype
== stStaticProc
))
1180 /* Finished with procedure */
1181 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1182 struct mips_extra_func_info
*e
;
1184 struct type
*ftype
= top_stack
->cur_type
;
1187 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1189 /* Make up special symbol to contain procedure specific info */
1190 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1191 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1192 SYMBOL_CLASS (s
) = LOC_CONST
;
1193 SYMBOL_TYPE (s
) = mdebug_type_void
;
1194 e
= ((struct mips_extra_func_info
*)
1195 obstack_alloc (¤t_objfile
->symbol_obstack
,
1196 sizeof (struct mips_extra_func_info
)));
1197 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
1198 SYMBOL_VALUE (s
) = (long) e
;
1199 e
->numargs
= top_stack
->numargs
;
1200 e
->pdr
.framereg
= -1;
1201 add_symbol (s
, top_stack
->cur_block
);
1203 /* Reallocate symbols, saving memory */
1204 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1206 /* f77 emits proc-level with address bounds==[0,0],
1207 So look for such child blocks, and patch them. */
1208 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1210 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1211 if (BLOCK_SUPERBLOCK (b_bad
) == b
1212 && BLOCK_START (b_bad
) == top_stack
->procadr
1213 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1215 BLOCK_START (b_bad
) = BLOCK_START (b
);
1216 BLOCK_END (b_bad
) = BLOCK_END (b
);
1220 if (TYPE_NFIELDS (ftype
) <= 0)
1222 /* No parameter type information is recorded with the function's
1223 type. Set that from the type of the parameter symbols. */
1224 int nparams
= top_stack
->numargs
;
1230 TYPE_NFIELDS (ftype
) = nparams
;
1231 TYPE_FIELDS (ftype
) = (struct field
*)
1232 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1234 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1236 sym
= BLOCK_SYM (b
, i
);
1237 switch (SYMBOL_CLASS (sym
))
1242 case LOC_REGPARM_ADDR
:
1243 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1253 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1255 /* End of (code) block. The value of the symbol is the
1256 displacement from the procedure`s start address of the
1257 end of this block. */
1258 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1259 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1261 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1263 /* End of outermost block. Pop parse stack and ignore. The
1264 following stEnd of stProc will take care of the block. */
1267 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1269 /* End of file. Pop parse stack and ignore. Higher
1270 level code deals with this. */
1274 complain (&stEnd_complaint
, sh
->sc
);
1276 pop_parse_stack (); /* restore previous lexical context */
1279 case stMember
: /* member of struct or union */
1280 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1282 f
->bitpos
= sh
->value
;
1284 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1285 f
->bitsize
= bitsize
;
1288 case stIndirect
: /* forward declaration on Irix5 */
1289 /* Forward declarations from Irix5 cc are handled by cross_ref,
1293 case stTypedef
: /* type definition */
1294 found_ecoff_debugging_info
= 1;
1296 /* Typedefs for forward declarations and opaque structs from alpha cc
1297 are handled by cross_ref, skip them. */
1301 /* Parse the type or use the pending type. */
1302 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1303 if (pend
== (struct mdebug_pending
*) NULL
)
1305 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1306 add_pending (cur_fdr
, ext_sh
, t
);
1311 /* mips cc puts out a typedef with the name of the struct for forward
1312 declarations. These should not go into the symbol table and
1313 TYPE_NAME should not be set for them.
1314 They can't be distinguished from an intentional typedef to
1315 the same name however:
1317 struct x { int ix; int jx; };
1321 struct xx {int ixx; int jxx; };
1322 generates a cross referencing stTypedef for x and xx.
1323 The user visible effect of this is that the type of a pointer
1324 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1325 The problem is fixed with alpha cc and Irix5 cc. */
1327 /* However if the typedef cross references to an opaque aggregate, it
1328 is safe to omit it from the symbol table. */
1330 if (has_opaque_xref (cur_fdr
, sh
))
1332 s
= new_symbol (name
);
1333 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1334 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1335 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1336 SYMBOL_TYPE (s
) = t
;
1337 add_symbol (s
, top_stack
->cur_block
);
1339 /* Incomplete definitions of structs should not get a name. */
1340 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1341 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1342 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1343 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1345 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1346 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1348 /* If we are giving a name to a type such as "pointer to
1349 foo" or "function returning foo", we better not set
1350 the TYPE_NAME. If the program contains "typedef char
1351 *caddr_t;", we don't want all variables of type char
1352 * to print as caddr_t. This is not just a
1353 consequence of GDB's type management; CC and GCC (at
1354 least through version 2.4) both output variables of
1355 either type char * or caddr_t with the type
1356 refering to the stTypedef symbol for caddr_t. If a future
1357 compiler cleans this up it GDB is not ready for it
1358 yet, but if it becomes ready we somehow need to
1359 disable this check (without breaking the PCC/GCC2.4
1364 Fortunately, this check seems not to be necessary
1365 for anything except pointers or functions. */
1368 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1372 case stFile
: /* file name */
1373 push_parse_stack ();
1374 top_stack
->blocktype
= sh
->st
;
1377 /* I`ve never seen these for C */
1379 break; /* register relocation */
1381 break; /* forwarding address */
1383 break; /* constant */
1385 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1392 /* Parse the type information provided in the raw AX entries for
1393 the symbol SH. Return the bitfield size in BS, in case.
1394 We must byte-swap the AX entries before we use them; BIGEND says whether
1395 they are big-endian or little-endian (from fh->fBigendian). */
1397 static struct type
*
1398 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1401 unsigned int aux_index
;
1406 /* Null entries in this map are treated specially */
1407 static struct type
**map_bt
[] =
1409 &mdebug_type_void
, /* btNil */
1410 &mdebug_type_adr_32
, /* btAdr */
1411 &mdebug_type_char
, /* btChar */
1412 &mdebug_type_unsigned_char
, /* btUChar */
1413 &mdebug_type_short
, /* btShort */
1414 &mdebug_type_unsigned_short
, /* btUShort */
1415 &mdebug_type_int_32
, /* btInt */
1416 &mdebug_type_unsigned_int_32
, /* btUInt */
1417 &mdebug_type_long_32
, /* btLong */
1418 &mdebug_type_unsigned_long_32
, /* btULong */
1419 &mdebug_type_float
, /* btFloat */
1420 &mdebug_type_double
, /* btDouble */
1427 &mdebug_type_complex
, /* btComplex */
1428 &mdebug_type_double_complex
, /* btDComplex */
1430 &mdebug_type_fixed_dec
, /* btFixedDec */
1431 &mdebug_type_float_dec
, /* btFloatDec */
1432 &mdebug_type_string
, /* btString */
1435 &mdebug_type_void
, /* btVoid */
1436 0, /* DEC C++: Pointer to member */
1437 0, /* DEC C++: Virtual function table */
1438 0, /* DEC C++: Class (Record) */
1439 &mdebug_type_long_64
, /* btLong64 */
1440 &mdebug_type_unsigned_long_64
, /* btULong64 */
1441 &mdebug_type_long_long_64
, /* btLongLong64 */
1442 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1443 &mdebug_type_adr_64
, /* btAdr64 */
1444 &mdebug_type_int_64
, /* btInt64 */
1445 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1449 struct type
*tp
= 0;
1450 enum type_code type_code
= TYPE_CODE_UNDEF
;
1452 /* Handle undefined types, they have indexNil. */
1453 if (aux_index
== indexNil
)
1454 return mdebug_type_int
;
1456 /* Handle corrupt aux indices. */
1457 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1459 complain (&index_complaint
, sym_name
);
1460 return mdebug_type_int
;
1464 /* Use aux as a type information record, map its basic type. */
1465 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1466 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1468 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1469 return mdebug_type_int
;
1473 tp
= *map_bt
[t
->bt
];
1478 /* Cannot use builtin types -- build our own */
1482 type_code
= TYPE_CODE_STRUCT
;
1485 type_code
= TYPE_CODE_UNION
;
1488 type_code
= TYPE_CODE_ENUM
;
1491 type_code
= TYPE_CODE_RANGE
;
1494 type_code
= TYPE_CODE_SET
;
1497 /* alpha cc -migrate uses this for typedefs. The true type will
1498 be obtained by crossreferencing below. */
1499 type_code
= TYPE_CODE_ERROR
;
1502 /* alpha cc uses this for typedefs. The true type will be
1503 obtained by crossreferencing below. */
1504 type_code
= TYPE_CODE_ERROR
;
1507 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1508 return mdebug_type_int
;
1512 /* Move on to next aux */
1517 int width
= AUX_GET_WIDTH (bigend
, ax
);
1519 /* Inhibit core dumps with some cfront generated objects that
1521 if (bs
== (int *)NULL
)
1523 /* Alpha cc -migrate encodes char and unsigned char types
1524 as short and unsigned short types with a field width of 8.
1525 Enum types also have a field width which we ignore for now. */
1526 if (t
->bt
== btShort
&& width
== 8)
1527 tp
= mdebug_type_char
;
1528 else if (t
->bt
== btUShort
&& width
== 8)
1529 tp
= mdebug_type_unsigned_char
;
1530 else if (t
->bt
== btEnum
)
1533 complain (&bad_fbitfield_complaint
, sym_name
);
1540 /* A btIndirect entry cross references to an aux entry containing
1542 if (t
->bt
== btIndirect
)
1549 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1551 if (rn
->rfd
== 0xfff)
1553 rf
= AUX_GET_ISYM (bigend
, ax
);
1561 complain (&bad_indirect_xref_complaint
, sym_name
);
1562 return mdebug_type_int
;
1564 xref_fh
= get_rfd (fd
, rf
);
1565 xref_fd
= xref_fh
- debug_info
->fdr
;
1566 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1567 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1570 /* All these types really point to some (common) MIPS type
1571 definition, and only the type-qualifiers fully identify
1572 them. We'll make the same effort at sharing. */
1573 if (t
->bt
== btStruct
||
1577 /* btSet (I think) implies that the name is a tag name, not a typedef
1578 name. This apparently is a MIPS extension for C sets. */
1583 /* Try to cross reference this type, build new type on failure. */
1584 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1585 if (tp
== (struct type
*) NULL
)
1586 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1588 /* DEC c89 produces cross references to qualified aggregate types,
1589 dereference them. */
1590 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1591 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1592 tp
= tp
->target_type
;
1594 /* Make sure that TYPE_CODE(tp) has an expected type code.
1595 Any type may be returned from cross_ref if file indirect entries
1597 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1598 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1599 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1601 complain (&unexpected_type_code_complaint
, sym_name
);
1606 /* Usually, TYPE_CODE(tp) is already type_code. The main
1607 exception is if we guessed wrong re struct/union/enum.
1608 But for struct vs. union a wrong guess is harmless, so
1609 don't complain(). */
1610 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1611 && type_code
!= TYPE_CODE_ENUM
)
1612 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1613 && type_code
== TYPE_CODE_ENUM
))
1615 complain (&bad_tag_guess_complaint
, sym_name
);
1618 if (TYPE_CODE (tp
) != type_code
)
1620 TYPE_CODE (tp
) = type_code
;
1623 /* Do not set the tag name if it is a compiler generated tag name
1624 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1625 if (name
[0] == '.' || name
[0] == '\0')
1626 TYPE_TAG_NAME (tp
) = NULL
;
1627 else if (TYPE_TAG_NAME (tp
) == NULL
1628 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1629 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1630 ¤t_objfile
->type_obstack
);
1634 /* All these types really point to some (common) MIPS type
1635 definition, and only the type-qualifiers fully identify
1636 them. We'll make the same effort at sharing.
1637 FIXME: We are not doing any guessing on range types. */
1638 if (t
->bt
== btRange
)
1642 /* Try to cross reference this type, build new type on failure. */
1643 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1644 if (tp
== (struct type
*) NULL
)
1645 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1647 /* Make sure that TYPE_CODE(tp) has an expected type code.
1648 Any type may be returned from cross_ref if file indirect entries
1650 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1652 complain (&unexpected_type_code_complaint
, sym_name
);
1656 /* Usually, TYPE_CODE(tp) is already type_code. The main
1657 exception is if we guessed wrong re struct/union/enum. */
1658 if (TYPE_CODE (tp
) != type_code
)
1660 complain (&bad_tag_guess_complaint
, sym_name
);
1661 TYPE_CODE (tp
) = type_code
;
1663 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1664 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1665 ¤t_objfile
->type_obstack
);
1668 if (t
->bt
== btTypedef
)
1672 /* Try to cross reference this type, it should succeed. */
1673 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1674 if (tp
== (struct type
*) NULL
)
1676 complain (&unable_to_cross_ref_complaint
, sym_name
);
1677 tp
= mdebug_type_int
;
1681 /* Deal with range types */
1682 if (t
->bt
== btRange
)
1684 TYPE_NFIELDS (tp
) = 2;
1685 TYPE_FIELDS (tp
) = ((struct field
*)
1686 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1687 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1688 ¤t_objfile
->type_obstack
);
1689 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1691 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1692 ¤t_objfile
->type_obstack
);
1693 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1697 /* Parse all the type qualifiers now. If there are more
1698 than 6 the game will continue in the next aux */
1702 #define PARSE_TQ(tq) \
1703 if (t->tq != tqNil) \
1704 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1716 /* mips cc 2.x and gcc never put out continued aux entries. */
1720 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1724 /* Complain for illegal continuations due to corrupt aux entries. */
1726 complain (&bad_continued_complaint
, sym_name
);
1731 /* Make up a complex type from a basic one. Type is passed by
1732 reference in TPP and side-effected as necessary. The type
1733 qualifier TQ says how to handle the aux symbols at AX for
1734 the symbol SX we are currently analyzing. BIGEND says whether
1735 aux symbols are big-endian or little-endian.
1736 Returns the number of aux symbols we parsed. */
1739 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1750 /* Used in array processing */
1761 t
= lookup_pointer_type (*tpp
);
1766 t
= lookup_function_type (*tpp
);
1773 /* Determine and record the domain type (type of index) */
1774 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1780 rf
= AUX_GET_ISYM (bigend
, ax
);
1783 fh
= get_rfd (fd
, rf
);
1785 indx
= parse_type (fd
, debug_info
->external_aux
+ fh
->iauxBase
,
1786 id
, (int *) NULL
, bigend
, sym_name
);
1788 /* The bounds type should be an integer type, but might be anything
1789 else due to corrupt aux entries. */
1790 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1792 complain (&array_index_type_complaint
, sym_name
);
1793 indx
= mdebug_type_int
;
1796 /* Get the bounds, and create the array type. */
1798 lower
= AUX_GET_DNLOW (bigend
, ax
);
1800 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1802 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1804 range
= create_range_type ((struct type
*) NULL
, indx
,
1807 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1809 /* We used to fill in the supplied array element bitsize
1810 here if the TYPE_LENGTH of the target type was zero.
1811 This happens for a `pointer to an array of anonymous structs',
1812 but in this case the array element bitsize is also zero,
1813 so nothing is gained.
1814 And we used to check the TYPE_LENGTH of the target type against
1815 the supplied array element bitsize.
1816 gcc causes a mismatch for `pointer to array of object',
1817 since the sdb directives it uses do not have a way of
1818 specifying the bitsize, but it does no harm (the
1819 TYPE_LENGTH should be correct) and we should be able to
1820 ignore the erroneous bitsize from the auxiliary entry safely.
1821 dbx seems to ignore it too. */
1823 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1825 if (TYPE_LENGTH (*tpp
) == 0)
1827 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1834 /* Volatile -- currently ignored */
1838 /* Const -- currently ignored */
1842 complain (&unknown_type_qual_complaint
, tq
);
1848 /* Parse a procedure descriptor record PR. Note that the procedure is
1849 parsed _after_ the local symbols, now we just insert the extra
1850 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1851 already been placed in the procedure's main block. Note also that
1852 images that have been partially stripped (ld -x) have been deprived
1853 of local symbols, and we have to cope with them here. FIRST_OFF is
1854 the offset of the first procedure for this FDR; we adjust the
1855 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1856 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1857 in question, or NULL to use top_stack->cur_block. */
1859 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, unsigned long,
1860 struct partial_symtab
*));
1863 parse_procedure (pr
, search_symtab
, first_off
, pst
)
1865 struct symtab
*search_symtab
;
1866 unsigned long first_off
;
1867 struct partial_symtab
*pst
;
1869 struct symbol
*s
, *i
;
1871 struct mips_extra_func_info
*e
;
1874 /* Simple rule to find files linked "-x" */
1875 if (cur_fdr
->rss
== -1)
1879 /* Static procedure at address pr->adr. Sigh. */
1880 /* FIXME-32x64. assuming pr->adr fits in long. */
1881 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1889 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1890 ((char *) debug_info
->external_ext
1892 * debug_swap
->external_ext_size
)),
1894 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1902 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1903 ((char *) debug_info
->external_sym
1904 + ((cur_fdr
->isymBase
+ pr
->isym
)
1905 * debug_swap
->external_sym_size
)),
1907 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1910 if (search_symtab
!= NULL
)
1913 /* This loses both in the case mentioned (want a static, find a global),
1914 but also if we are looking up a non-mangled name which happens to
1915 match the name of a mangled function. */
1916 /* We have to save the cur_fdr across the call to lookup_symbol.
1917 If the pdr is for a static function and if a global function with
1918 the same name exists, lookup_symbol will eventually read in the symtab
1919 for the global function and clobber cur_fdr. */
1920 FDR
*save_cur_fdr
= cur_fdr
;
1921 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1922 cur_fdr
= save_cur_fdr
;
1926 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1932 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1933 VAR_NAMESPACE
, LOC_BLOCK
);
1937 b
= SYMBOL_BLOCK_VALUE (s
);
1941 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1945 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1946 s
= new_symbol (sh_name
);
1947 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1948 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1949 /* Donno its type, hope int is ok */
1950 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1951 add_symbol (s
, top_stack
->cur_block
);
1952 /* Wont have symbols for this one */
1954 SYMBOL_BLOCK_VALUE (s
) = b
;
1955 BLOCK_FUNCTION (b
) = s
;
1956 BLOCK_START (b
) = pr
->adr
;
1957 /* BOUND used to be the end of procedure's text, but the
1958 argument is no longer passed in. */
1959 BLOCK_END (b
) = bound
;
1960 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1961 add_block (b
, top_stack
->cur_st
);
1965 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1969 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1971 e
->pdr
.isym
= (long) s
;
1972 e
->pdr
.adr
+= pst
->textlow
- first_off
;
1974 /* Correct incorrect setjmp procedure descriptor from the library
1975 to make backtrace through setjmp work. */
1976 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1978 complain (&bad_setjmp_pdr_complaint
, 0);
1979 e
->pdr
.pcreg
= RA_REGNUM
;
1980 e
->pdr
.regmask
= 0x80000000;
1981 e
->pdr
.regoffset
= -4;
1985 /* It would be reasonable that functions that have been compiled
1986 without debugging info have a btNil type for their return value,
1987 and functions that are void and are compiled with debugging info
1989 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1990 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1992 The glevel field in cur_fdr could be used to determine the presence
1993 of debugging info, but GCC doesn't always pass the -g switch settings
1994 to the assembler and GAS doesn't set the glevel field from the -g switch
1996 To work around these problems, the return value type of a TYPE_CODE_VOID
1997 function is adjusted accordingly if no debugging info was found in the
1998 compilation unit. */
2000 if (processing_gcc_compilation
== 0
2001 && found_ecoff_debugging_info
== 0
2002 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2003 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2006 /* Relocate the extra function info pointed to by the symbol table. */
2009 ecoff_relocate_efi (sym
, delta
)
2013 struct mips_extra_func_info
*e
;
2015 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2017 e
->pdr
.adr
+= delta
;
2020 /* Parse the external symbol ES. Just call parse_symbol() after
2021 making sure we know where the aux are for it.
2022 BIGEND says whether aux entries are big-endian or little-endian.
2024 This routine clobbers top_stack->cur_block and ->cur_st. */
2026 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
2029 parse_external (es
, bigend
, section_offsets
)
2032 struct section_offsets
*section_offsets
;
2036 if (es
->ifd
!= ifdNil
)
2039 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2040 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2044 cur_fdr
= debug_info
->fdr
;
2048 /* Reading .o files */
2049 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scNil
)
2052 switch (es
->asym
.st
)
2055 /* These are generated for static symbols in .o files,
2076 /* FIXME: Turn this into a complaint? */
2078 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2079 what
, debug_info
->ssext
+ es
->asym
.iss
,
2080 fdr_name (cur_fdr
));
2084 switch (es
->asym
.st
)
2088 /* There is no need to parse the external procedure symbols.
2089 If they are from objects compiled without -g, their index will
2090 be indexNil, and the symbol definition from the minimal symbol
2091 is preferrable (yielding a function returning int instead of int).
2092 If the index points to a local procedure symbol, the local
2093 symbol already provides the correct type.
2094 Note that the index of the external procedure symbol points
2095 to the local procedure symbol in the local symbol table, and
2096 _not_ to the auxiliary symbol info. */
2100 /* Global common symbols are resolved by the runtime loader,
2102 if (es
->asym
.sc
== scCommon
|| es
->asym
.sc
== scSCommon
)
2105 /* Note that the case of a symbol with indexNil must be handled
2106 anyways by parse_symbol(). */
2107 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
2114 /* Parse the line number info for file descriptor FH into
2115 GDB's linetable LT. MIPS' encoding requires a little bit
2116 of magic to get things out. Note also that MIPS' line
2117 numbers can go back and forth, apparently we can live
2118 with that and do not need to reorder our linetables */
2120 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
2121 struct partial_symtab
*));
2124 parse_lines (fh
, pr
, lt
, maxlines
, pst
)
2127 struct linetable
*lt
;
2129 struct partial_symtab
*pst
;
2131 unsigned char *base
;
2133 int delta
, count
, lineno
= 0;
2134 unsigned long first_off
= pr
->adr
;
2136 if (fh
->cbLine
== 0)
2139 /* Scan by procedure descriptors */
2141 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2145 unsigned char *halt
;
2147 /* No code for this one */
2148 if (pr
->iline
== ilineNil
||
2149 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2152 /* Determine start and end address of compressed line bytes for
2154 base
= debug_info
->line
+ fh
->cbLineOffset
;
2155 if (j
!= (fh
->cpd
- 1))
2156 halt
= base
+ pr
[1].cbLineOffset
;
2158 halt
= base
+ fh
->cbLine
;
2159 base
+= pr
->cbLineOffset
;
2161 adr
= pst
->textlow
+ pr
->adr
- first_off
;
2163 l
= adr
>> 2; /* in words */
2164 for (lineno
= pr
->lnLow
; base
< halt
; )
2166 count
= *base
& 0x0f;
2167 delta
= *base
++ >> 4;
2172 delta
= (base
[0] << 8) | base
[1];
2173 if (delta
>= 0x8000)
2177 lineno
+= delta
; /* first delta is 0 */
2179 /* Complain if the line table overflows. Could happen
2180 with corrupt binaries. */
2181 if (lt
->nitems
>= maxlines
)
2183 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2186 k
= add_line (lt
, lineno
, l
, k
);
2192 /* Master parsing procedure for first-pass reading of file symbols
2193 into a partial_symtab. */
2196 parse_partial_symbols (objfile
, section_offsets
)
2197 struct objfile
*objfile
;
2198 struct section_offsets
*section_offsets
;
2200 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2201 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2202 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2203 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2204 = debug_swap
->swap_ext_in
;
2205 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2206 = debug_swap
->swap_sym_in
;
2207 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2208 = debug_swap
->swap_rfd_in
;
2210 HDRR
*hdr
= &debug_info
->symbolic_header
;
2211 /* Running pointers */
2216 register EXTR
*ext_in
;
2219 struct partial_symtab
*pst
;
2221 int past_first_source_file
= 0;
2223 /* List of current psymtab's include files */
2224 char **psymtab_include_list
;
2225 int includes_allocated
;
2228 struct pst_map
*fdr_to_pst
;
2229 /* Index within current psymtab dependency list */
2230 struct partial_symtab
**dependency_list
;
2231 int dependencies_used
, dependencies_allocated
;
2232 struct cleanup
*old_chain
;
2234 enum language prev_language
;
2235 asection
*text_sect
;
2236 int relocatable
= 0;
2238 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2239 the shared libraries are prelinked at a high memory address.
2240 We have to adjust the start address of the object file for this case,
2241 by setting it to the start address of the first procedure in the file.
2242 But we should do no adjustments if we are debugging a .o file, where
2243 the text section (and fh->adr) really starts at zero. */
2244 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2245 if (text_sect
!= NULL
2246 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2249 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2250 sizeof (EXTR
) * hdr
->iextMax
);
2252 includes_allocated
= 30;
2254 psymtab_include_list
= (char **) alloca (includes_allocated
*
2256 next_symbol_text_func
= mdebug_next_symbol_text
;
2258 dependencies_allocated
= 30;
2259 dependencies_used
= 0;
2261 (struct partial_symtab
**) alloca (dependencies_allocated
*
2262 sizeof (struct partial_symtab
*));
2264 last_source_file
= NULL
;
2269 * Only parse the Local and External symbols, and the Relative FDR.
2270 * Fixup enough of the loader symtab to be able to use it.
2271 * Allocate space only for the file's portions we need to
2276 max_glevel
= MIN_GLEVEL
;
2278 /* Allocate the map FDR -> PST.
2279 Minor hack: -O3 images might claim some global data belongs
2280 to FDR -1. We`ll go along with that */
2281 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2282 old_chain
= make_cleanup (free
, fdr_to_pst
);
2285 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2286 fdr_to_pst
[-1].pst
= pst
;
2290 /* Allocate the global pending list. */
2292 ((struct mdebug_pending
**)
2293 obstack_alloc (&objfile
->psymbol_obstack
,
2294 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2295 memset ((PTR
) pending_list
, 0,
2296 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2298 /* Pass 0 over external syms: swap them in. */
2299 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2300 make_cleanup (free
, ext_block
);
2302 ext_out
= (char *) debug_info
->external_ext
;
2303 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2305 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2306 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2308 /* Pass 1 over external syms: Presize and partition the list */
2310 ext_in_end
= ext_in
+ hdr
->iextMax
;
2311 for (; ext_in
< ext_in_end
; ext_in
++)
2313 /* See calls to complain below. */
2314 if (ext_in
->ifd
>= -1
2315 && ext_in
->ifd
< hdr
->ifdMax
2316 && ext_in
->asym
.iss
>= 0
2317 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2318 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2321 /* Pass 1.5 over files: partition out global symbol space */
2323 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2325 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2326 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2327 fdr_to_pst
[f_idx
].n_globals
= 0;
2330 /* Pass 2 over external syms: fill in external symbols */
2332 ext_in_end
= ext_in
+ hdr
->iextMax
;
2333 for (; ext_in
< ext_in_end
; ext_in
++)
2335 enum minimal_symbol_type ms_type
= mst_text
;
2336 CORE_ADDR svalue
= ext_in
->asym
.value
;
2338 /* The Irix 5 native tools seem to sometimes generate bogus
2339 external symbols. */
2340 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2342 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2345 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2347 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2352 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2353 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2355 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scNil
)
2358 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2359 switch (ext_in
->asym
.st
)
2362 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2365 ms_type
= mst_file_text
;
2366 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2369 if (ext_in
->asym
.sc
== scCommon
|| ext_in
->asym
.sc
== scSCommon
)
2371 /* The value of a common symbol is its size, not its address.
2375 else if (ext_in
->asym
.sc
== scData
2376 || ext_in
->asym
.sc
== scSData
2377 || ext_in
->asym
.sc
== scRData
2378 || ext_in
->asym
.sc
== scPData
2379 || ext_in
->asym
.sc
== scXData
)
2382 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2387 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2391 if (ext_in
->asym
.sc
== scAbs
)
2393 else if (ext_in
->asym
.sc
== scText
2394 || ext_in
->asym
.sc
== scInit
2395 || ext_in
->asym
.sc
== scFini
)
2397 ms_type
= mst_file_text
;
2398 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2400 else if (ext_in
->asym
.sc
== scData
2401 || ext_in
->asym
.sc
== scSData
2402 || ext_in
->asym
.sc
== scRData
2403 || ext_in
->asym
.sc
== scPData
2404 || ext_in
->asym
.sc
== scXData
)
2406 ms_type
= mst_file_data
;
2407 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2411 ms_type
= mst_file_bss
;
2412 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2416 /* The alpha has the section start addresses in stLocal symbols
2417 whose name starts with a `.'. Skip those but complain for all
2418 other stLocal symbols. */
2423 ms_type
= mst_unknown
;
2424 complain (&unknown_ext_complaint
, name
);
2426 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2429 /* Pass 3 over files, over local syms: fill in static symbols */
2430 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2432 struct partial_symtab
*save_pst
;
2436 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2440 fdr_to_pst
[f_idx
].pst
= NULL
;
2444 /* Determine the start address for this object file from the
2445 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2449 if (relocatable
|| textlow
!= 0)
2450 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2454 pst
= start_psymtab_common (objfile
, section_offsets
,
2457 objfile
->global_psymbols
.next
,
2458 objfile
->static_psymbols
.next
);
2459 pst
->read_symtab_private
= ((char *)
2460 obstack_alloc (&objfile
->psymbol_obstack
,
2461 sizeof (struct symloc
)));
2462 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2465 FDR_IDX (pst
) = f_idx
;
2466 CUR_BFD (pst
) = cur_bfd
;
2467 DEBUG_SWAP (pst
) = debug_swap
;
2468 DEBUG_INFO (pst
) = debug_info
;
2469 PENDING_LIST (pst
) = pending_list
;
2471 /* The way to turn this into a symtab is to call... */
2472 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2474 /* Set up language for the pst.
2475 The language from the FDR is used if it is unambigious (e.g. cfront
2476 with native cc and g++ will set the language to C).
2477 Otherwise we have to deduce the language from the filename.
2478 Native ecoff has every header file in a separate FDR, so
2479 deduce_language_from_filename will return language_unknown for
2480 a header file, which is not what we want.
2481 But the FDRs for the header files are after the FDR for the source
2482 file, so we can assign the language of the source file to the
2483 following header files. Then we save the language in the private
2484 pst data so that we can reuse it when building symtabs. */
2485 prev_language
= psymtab_language
;
2489 case langCplusplusV2
:
2490 psymtab_language
= language_cplus
;
2493 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2496 if (psymtab_language
== language_unknown
)
2497 psymtab_language
= prev_language
;
2498 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2500 pst
->texthigh
= pst
->textlow
;
2502 /* For stabs-in-ecoff files, the second symbol must be @stab.
2503 This symbol is emitted by mips-tfile to signal that the
2504 current object file uses encapsulated stabs instead of mips
2505 ecoff for local symbols. (It is the second symbol because
2506 the first symbol is the stFile used to signal the start of a
2508 processing_gcc_compilation
= 0;
2511 (*swap_sym_in
) (cur_bfd
,
2512 ((char *) debug_info
->external_sym
2513 + (fh
->isymBase
+ 1) * external_sym_size
),
2515 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2516 processing_gcc_compilation
= 2;
2519 if (processing_gcc_compilation
!= 0)
2521 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2526 (*swap_sym_in
) (cur_bfd
,
2527 (((char *) debug_info
->external_sym
)
2528 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2530 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2531 if (!ECOFF_IS_STAB (&sh
))
2533 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2538 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2539 if (sh
.st
== stStaticProc
)
2541 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2542 prim_record_minimal_symbol_and_info (namestring
,
2549 procaddr
= sh
.value
;
2551 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2552 (debug_info
->external_aux
2555 (*swap_sym_in
) (cur_bfd
,
2556 ((char *) debug_info
->external_sym
2557 + ((fh
->isymBase
+ isym
- 1)
2558 * external_sym_size
)),
2562 long high
= procaddr
+ sh
.value
;
2564 /* Kludge for Irix 5.2 zero fh->adr. */
2566 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2567 pst
->textlow
= procaddr
;
2568 if (high
> pst
->texthigh
)
2569 pst
->texthigh
= high
;
2572 else if (sh
.st
== stStatic
)
2586 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2587 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2588 prim_record_minimal_symbol_and_info (namestring
,
2597 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2598 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2599 prim_record_minimal_symbol_and_info (namestring
,
2610 #define SET_NAMESTRING() \
2611 namestring = debug_info->ss + fh->issBase + sh.iss
2612 #define CUR_SYMBOL_TYPE type_code
2613 #define CUR_SYMBOL_VALUE sh.value
2614 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2616 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2617 #define HANDLE_RBRAC(val) \
2618 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2619 #include "partial-stab.h"
2624 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2627 enum address_class
class;
2629 (*swap_sym_in
) (cur_bfd
,
2630 ((char *) debug_info
->external_sym
2631 + ((fh
->isymBase
+ cur_sdx
)
2632 * external_sym_size
)),
2635 if (ECOFF_IS_STAB (&sh
))
2641 /* Non absolute static symbols go into the minimal table. */
2642 if (sh
.sc
== scUndefined
|| sh
.sc
== scNil
2643 || (sh
.index
== indexNil
2644 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2646 /* FIXME, premature? */
2651 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2656 /* The value of a stEnd symbol is the displacement from the
2657 corresponding start symbol value, do not relocate it. */
2659 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2666 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2670 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2681 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2682 mst_file_text
, NULL
,
2683 SECT_OFF_TEXT
, objfile
);
2688 /* Usually there is a local and a global stProc symbol
2689 for a function. This means that the function name
2690 has already been entered into the mimimal symbol table
2691 while processing the global symbols in pass 2 above.
2692 One notable exception is the PROGRAM name from
2693 f77 compiled executables, it is only put out as
2694 local stProc symbol, and a global MAIN__ stProc symbol
2695 points to it. It doesn't matter though, as gdb is
2696 still able to find the PROGRAM name via the partial
2697 symbol table, and the MAIN__ symbol via the minimal
2699 if (sh
.st
== stProc
)
2700 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2701 VAR_NAMESPACE
, LOC_BLOCK
,
2702 objfile
->global_psymbols
,
2703 sh
.value
, psymtab_language
, objfile
);
2705 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2706 VAR_NAMESPACE
, LOC_BLOCK
,
2707 objfile
->static_psymbols
,
2708 sh
.value
, psymtab_language
, objfile
);
2710 /* Skip over procedure to next one. */
2711 if (sh
.index
>= hdr
->iauxMax
)
2713 /* Should not happen, but does when cross-compiling
2714 with the MIPS compiler. FIXME -- pull later. */
2715 complain (&index_complaint
, name
);
2716 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2719 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2720 (debug_info
->external_aux
2723 procaddr
= sh
.value
;
2725 if (new_sdx
<= cur_sdx
)
2727 /* This should not happen either... FIXME. */
2728 complain (&aux_index_complaint
, name
);
2729 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2733 (*swap_sym_in
) (cur_bfd
,
2734 ((char *) debug_info
->external_sym
2735 + ((fh
->isymBase
+ cur_sdx
- 1)
2736 * external_sym_size
)),
2741 /* Kludge for Irix 5.2 zero fh->adr. */
2743 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2744 pst
->textlow
= procaddr
;
2746 high
= procaddr
+ sh
.value
;
2747 if (high
> pst
->texthigh
)
2748 pst
->texthigh
= high
;
2751 case stStatic
: /* Variable */
2756 || sh
.sc
== scXData
)
2757 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2758 mst_file_data
, NULL
,
2762 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2769 case stIndirect
:/* Irix5 forward declaration */
2770 /* Skip forward declarations from Irix5 cc */
2773 case stTypedef
:/* Typedef */
2774 /* Skip typedefs for forward declarations and opaque
2775 structs from alpha and mips cc. */
2776 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2778 class = LOC_TYPEDEF
;
2781 case stConstant
: /* Constant decl */
2788 case stBlock
: /* { }, str, un, enum*/
2789 /* Do not create a partial symbol for cc unnamed aggregates
2790 and gcc empty aggregates. */
2791 if ((sh
.sc
== scInfo
2792 || sh
.sc
== scCommon
|| sh
.sc
== scSCommon
)
2794 && sh
.index
!= cur_sdx
+ 2)
2796 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2797 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2798 objfile
->static_psymbols
,
2800 psymtab_language
, objfile
);
2802 handle_psymbol_enumerators (objfile
, fh
, sh
.st
);
2804 /* Skip over the block */
2806 if (new_sdx
<= cur_sdx
)
2808 /* This happens with the Ultrix kernel. */
2809 complain (&block_index_complaint
, name
);
2810 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2815 case stFile
: /* File headers */
2816 case stLabel
: /* Labels */
2817 case stEnd
: /* Ends of files */
2820 case stLocal
: /* Local variables */
2821 /* Normally these are skipped because we skip over
2822 all blocks we see. However, these can occur
2823 as visible symbols in a .h file that contains code. */
2827 /* Both complaints are valid: one gives symbol name,
2828 the other the offending symbol type. */
2829 complain (&unknown_sym_complaint
, name
);
2830 complain (&unknown_st_complaint
, sh
.st
);
2834 /* Use this gdb symbol */
2835 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2836 VAR_NAMESPACE
, class,
2837 objfile
->static_psymbols
, sh
.value
,
2838 psymtab_language
, objfile
);
2840 cur_sdx
++; /* Go to next file symbol */
2843 /* Now do enter the external symbols. */
2844 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2845 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2846 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2847 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2848 for (; --cur_sdx
>= 0; ext_ptr
++)
2850 enum address_class
class;
2855 if (ext_ptr
->ifd
!= f_idx
)
2857 psh
= &ext_ptr
->asym
;
2859 /* Do not add undefined symbols to the partial symbol table. */
2860 if (psh
->sc
== scUndefined
|| psh
->sc
== scNil
)
2863 svalue
= psh
->value
;
2867 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2874 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2878 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2885 /* These are generated for static symbols in .o files,
2890 /* External procedure symbols have been entered
2891 into the minimal symbol table in pass 2 above.
2892 Ignore them, as parse_external will ignore them too. */
2898 complain (&unknown_ext_complaint
,
2899 debug_info
->ssext
+ psh
->iss
);
2900 /* Fall through, pretend it's global. */
2902 /* Global common symbols are resolved by the runtime loader,
2904 if (psh
->sc
== scCommon
|| psh
->sc
== scSCommon
)
2910 name
= debug_info
->ssext
+ psh
->iss
;
2911 ADD_PSYMBOL_ADDR_TO_LIST (name
, strlen (name
),
2912 VAR_NAMESPACE
, class,
2913 objfile
->global_psymbols
,
2915 psymtab_language
, objfile
);
2919 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2920 empty and put on the free list. */
2921 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2922 psymtab_include_list
, includes_used
,
2923 -1, save_pst
->texthigh
,
2924 dependency_list
, dependencies_used
);
2926 dependencies_used
= 0;
2928 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2929 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2931 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2932 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2935 /* The objfile has its functions reordered if this partial symbol
2936 table overlaps any other partial symbol table.
2937 We cannot assume a reordered objfile if a partial symbol table
2938 is contained within another partial symbol table, as partial symbol
2939 tables for include files with executable code are contained
2940 within the partial symbol table for the including source file,
2941 and we do not want to flag the objfile reordered for these cases.
2943 This strategy works well for Irix-5.2 shared libraries, but we
2944 might have to use a more elaborate (and slower) algorithm for
2946 save_pst
= fdr_to_pst
[f_idx
].pst
;
2947 if (save_pst
!= NULL
2948 && save_pst
->textlow
!= 0
2949 && !(objfile
->flags
& OBJF_REORDERED
))
2951 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
2954 && save_pst
->textlow
>= pst
->textlow
2955 && save_pst
->textlow
< pst
->texthigh
2956 && save_pst
->texthigh
> pst
->texthigh
)
2958 objfile
->flags
|= OBJF_REORDERED
;
2965 /* Now scan the FDRs for dependencies */
2966 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2968 fh
= f_idx
+ debug_info
->fdr
;
2969 pst
= fdr_to_pst
[f_idx
].pst
;
2971 if (pst
== (struct partial_symtab
*)NULL
)
2974 /* This should catch stabs-in-ecoff. */
2978 /* Skip the first file indirect entry as it is a self dependency
2979 for source files or a reverse .h -> .c dependency for header files. */
2980 pst
->number_of_dependencies
= 0;
2982 ((struct partial_symtab
**)
2983 obstack_alloc (&objfile
->psymbol_obstack
,
2985 * sizeof (struct partial_symtab
*))));
2986 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
2990 (*swap_rfd_in
) (cur_bfd
,
2991 ((char *) debug_info
->external_rfd
2992 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
2994 if (rh
< 0 || rh
>= hdr
->ifdMax
)
2996 complain (&bad_file_number_complaint
, rh
);
3000 /* Skip self dependencies of header files. */
3004 /* Do not add to dependeny list if psymtab was empty. */
3005 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
3007 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3011 /* Remove the dummy psymtab created for -O3 images above, if it is
3012 still empty, to enable the detection of stripped executables. */
3013 if (objfile
->psymtabs
->next
== NULL
3014 && objfile
->psymtabs
->number_of_dependencies
== 0
3015 && objfile
->psymtabs
->n_global_syms
== 0
3016 && objfile
->psymtabs
->n_static_syms
== 0)
3017 objfile
->psymtabs
= NULL
;
3018 do_cleanups (old_chain
);
3021 /* If the current psymbol has an enumerated type, we need to add
3022 all the the enum constants to the partial symbol table. */
3025 handle_psymbol_enumerators (objfile
, fh
, stype
)
3026 struct objfile
*objfile
;
3030 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3031 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
3032 = debug_swap
->swap_sym_in
;
3033 char *ext_sym
= ((char *) debug_info
->external_sym
3034 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3044 /* It is an enumerated type if the next symbol entry is a stMember
3045 and its auxiliary index is indexNil or its auxiliary entry
3046 is a plain btNil or btVoid. */
3047 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3048 if (sh
.st
!= stMember
)
3051 if (sh
.index
== indexNil
)
3053 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3054 &(debug_info
->external_aux
3055 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3057 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
3069 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3070 if (sh
.st
!= stMember
)
3072 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3074 /* Note that the value doesn't matter for enum constants
3075 in psymtabs, just in symtabs. */
3076 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
3077 VAR_NAMESPACE
, LOC_CONST
,
3078 objfile
->static_psymbols
, 0,
3079 psymtab_language
, objfile
);
3080 ext_sym
+= external_sym_size
;
3085 mdebug_next_symbol_text ()
3090 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3091 ((char *) debug_info
->external_sym
3092 + ((cur_fdr
->isymBase
+ cur_sdx
)
3093 * debug_swap
->external_sym_size
)),
3095 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3098 /* Ancillary function to psymtab_to_symtab(). Does all the work
3099 for turning the partial symtab PST into a symtab, recurring
3100 first on all dependent psymtabs. The argument FILENAME is
3101 only passed so we can see in debug stack traces what file
3104 This function has a split personality, based on whether the
3105 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3106 The flow of control and even the memory allocation differs. FIXME. */
3109 psymtab_to_symtab_1 (pst
, filename
)
3110 struct partial_symtab
*pst
;
3113 bfd_size_type external_sym_size
;
3114 bfd_size_type external_pdr_size
;
3115 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
3116 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
3120 struct linetable
*lines
;
3126 /* Read in all partial symbtabs on which this one is dependent.
3127 NOTE that we do have circular dependencies, sigh. We solved
3128 that by setting pst->readin before this point. */
3130 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3131 if (!pst
->dependencies
[i
]->readin
)
3133 /* Inform about additional files to be read in. */
3136 fputs_filtered (" ", gdb_stdout
);
3138 fputs_filtered ("and ", gdb_stdout
);
3140 printf_filtered ("%s...",
3141 pst
->dependencies
[i
]->filename
);
3142 wrap_here (""); /* Flush output */
3143 gdb_flush (gdb_stdout
);
3145 /* We only pass the filename for debug purposes */
3146 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3147 pst
->dependencies
[i
]->filename
);
3150 /* Do nothing if this is a dummy psymtab. */
3152 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3153 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3156 /* Now read the symbols for this symtab */
3158 cur_bfd
= CUR_BFD (pst
);
3159 debug_swap
= DEBUG_SWAP (pst
);
3160 debug_info
= DEBUG_INFO (pst
);
3161 pending_list
= PENDING_LIST (pst
);
3162 external_sym_size
= debug_swap
->external_sym_size
;
3163 external_pdr_size
= debug_swap
->external_pdr_size
;
3164 swap_sym_in
= debug_swap
->swap_sym_in
;
3165 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3166 current_objfile
= pst
->objfile
;
3167 cur_fd
= FDR_IDX (pst
);
3168 fh
= ((cur_fd
== -1)
3170 : debug_info
->fdr
+ cur_fd
);
3173 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3174 processing_gcc_compilation
= 0;
3175 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3179 (*swap_sym_in
) (cur_bfd
,
3180 ((char *) debug_info
->external_sym
3181 + (fh
->isymBase
+ 1) * external_sym_size
),
3183 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3186 /* We indicate that this is a GCC compilation so that certain
3187 features will be enabled in stabsread/dbxread. */
3188 processing_gcc_compilation
= 2;
3192 if (processing_gcc_compilation
!= 0)
3197 unsigned long first_off
= 0;
3199 /* This symbol table contains stabs-in-ecoff entries. */
3201 /* Parse local symbols first */
3203 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3205 current_objfile
= NULL
;
3208 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3214 (*swap_sym_in
) (cur_bfd
,
3215 (((char *) debug_info
->external_sym
)
3216 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3218 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3220 if (ECOFF_IS_STAB (&sh
))
3222 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3224 /* We should never get non N_STAB symbols here, but they
3225 should be harmless, so keep process_one_symbol from
3226 complaining about them. */
3227 if (type_code
& N_STAB
)
3229 process_one_symbol (type_code
, 0, valu
, name
,
3230 pst
->section_offsets
, pst
->objfile
);
3232 if (type_code
== N_FUN
)
3234 /* Make up special symbol to contain
3235 procedure specific info */
3236 struct mips_extra_func_info
*e
=
3237 ((struct mips_extra_func_info
*)
3238 obstack_alloc (¤t_objfile
->symbol_obstack
,
3239 sizeof (struct mips_extra_func_info
)));
3240 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3242 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3243 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3244 SYMBOL_CLASS (s
) = LOC_CONST
;
3245 SYMBOL_TYPE (s
) = mdebug_type_void
;
3246 SYMBOL_VALUE (s
) = (long) e
;
3247 e
->pdr
.framereg
= -1;
3248 add_symbol_to_list (s
, &local_symbols
);
3251 else if (sh
.st
== stLabel
)
3253 if (sh
.index
== indexNil
)
3255 /* This is what the gcc2_compiled and __gnu_compiled_*
3256 show up as. So don't complain. */
3261 /* Handle encoded stab line number. */
3262 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT
);
3263 record_line (current_subfile
, sh
.index
, valu
);
3266 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3267 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3268 /* These are generated by gcc-2.x, do not complain */
3271 complain (&stab_unknown_complaint
, name
);
3273 st
= end_symtab (pst
->texthigh
, 0, 0, pst
->objfile
, SECT_OFF_TEXT
);
3276 /* Sort the symbol table now, we are done adding symbols to it.
3277 We must do this before parse_procedure calls lookup_symbol. */
3278 sort_symtab_syms (st
);
3280 /* There used to be a call to sort_blocks here, but this should not
3281 be necessary for stabs symtabs. And as sort_blocks modifies the
3282 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3283 it did the wrong thing if the first procedure in a file was
3284 generated via asm statements. */
3286 /* Fill in procedure info next. */
3288 pdr_ptr
= ((char *) debug_info
->external_pdr
3289 + fh
->ipdFirst
* external_pdr_size
);
3290 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3291 for (; pdr_ptr
< pdr_end
; pdr_ptr
+= external_pdr_size
)
3295 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, &pr
);
3301 parse_procedure (&pr
, st
, first_off
, pst
);
3306 /* This symbol table contains ordinary ecoff entries. */
3312 /* How many symbols will we need */
3313 /* FIXME, this does not count enum values. */
3314 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3318 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3322 f_max
+= fh
->csym
+ fh
->cpd
;
3323 maxlines
= 2 * fh
->cline
;
3324 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3326 /* The proper language was already determined when building
3327 the psymtab, use it. */
3328 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3331 psymtab_language
= st
->language
;
3333 lines
= LINETABLE (st
);
3335 /* Get a new lexical context */
3337 push_parse_stack ();
3338 top_stack
->cur_st
= st
;
3339 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3341 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3342 BLOCK_END (top_stack
->cur_block
) = 0;
3343 top_stack
->blocktype
= stFile
;
3344 top_stack
->maxsyms
= 2 * f_max
;
3345 top_stack
->cur_type
= 0;
3346 top_stack
->procadr
= 0;
3347 top_stack
->numargs
= 0;
3348 found_ecoff_debugging_info
= 0;
3355 /* Parse local symbols first */
3356 sym_ptr
= ((char *) debug_info
->external_sym
3357 + fh
->isymBase
* external_sym_size
);
3358 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3359 while (sym_ptr
< sym_end
)
3364 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3365 c
= parse_symbol (&sh
,
3366 debug_info
->external_aux
+ fh
->iauxBase
,
3367 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3368 sym_ptr
+= c
* external_sym_size
;
3371 /* Linenumbers. At the end, check if we can save memory.
3372 parse_lines has to look ahead an arbitrary number of PDR
3373 structures, so we swap them all first. */
3377 struct cleanup
*old_chain
;
3383 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3385 old_chain
= make_cleanup (free
, pr_block
);
3387 pdr_ptr
= ((char *) debug_info
->external_pdr
3388 + fh
->ipdFirst
* external_pdr_size
);
3389 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3393 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3394 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3396 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
);
3397 if (lines
->nitems
< fh
->cline
)
3398 lines
= shrink_linetable (lines
);
3400 /* Fill in procedure info next. */
3402 pdr_in_end
= pdr_in
+ fh
->cpd
;
3403 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3404 parse_procedure (pdr_in
, 0, pr_block
->adr
, pst
);
3406 do_cleanups (old_chain
);
3410 LINETABLE (st
) = lines
;
3412 /* .. and our share of externals.
3413 XXX use the global list to speed up things here. how?
3414 FIXME, Maybe quit once we have found the right number of ext's? */
3415 top_stack
->cur_st
= st
;
3416 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3418 top_stack
->blocktype
= stFile
;
3420 = (debug_info
->symbolic_header
.isymMax
3421 + debug_info
->symbolic_header
.ipdMax
3422 + debug_info
->symbolic_header
.iextMax
);
3424 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3425 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3426 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3428 /* If there are undefined symbols, tell the user.
3429 The alpha has an undefined symbol for every symbol that is
3430 from a shared library, so tell the user only if verbose is on. */
3431 if (info_verbose
&& n_undef_symbols
)
3433 printf_filtered ("File %s contains %d unresolved references:",
3434 st
->filename
, n_undef_symbols
);
3435 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3436 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3437 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3444 /* Sort the symbol table now, we are done adding symbols to it.*/
3445 sort_symtab_syms (st
);
3450 /* Now link the psymtab and the symtab. */
3453 current_objfile
= NULL
;
3456 /* Ancillary parsing procedures. */
3458 /* Return 1 if the symbol pointed to by SH has a cross reference
3459 to an opaque aggregate type, else 0. */
3462 has_opaque_xref (fh
, sh
)
3471 if (sh
->index
== indexNil
)
3474 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3475 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3476 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3480 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3481 if (rn
->rfd
== 0xfff)
3482 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3490 /* Lookup the type at relative index RN. Return it in TPP
3491 if found and in any event come up with its name PNAME.
3492 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3493 Return value says how many aux symbols we ate. */
3496 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3500 enum type_code type_code
; /* Use to alloc new type if none is found. */
3512 struct mdebug_pending
*pend
;
3514 *tpp
= (struct type
*)NULL
;
3516 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3518 /* Escape index means 'the next one' */
3519 if (rn
->rfd
== 0xfff)
3522 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3529 /* mips cc uses a rf of -1 for opaque struct definitions.
3530 Set TYPE_FLAG_STUB for these types so that check_stub_type will
3531 resolve them if the struct gets defined in another compilation unit. */
3534 *pname
= "<undefined>";
3535 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3536 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3540 /* mips cc uses an escaped rn->index of 0 for struct return types
3541 of procedures that were compiled without -g. These will always remain
3543 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3545 *pname
= "<undefined>";
3549 /* Find the relative file descriptor and the symbol in it. */
3550 fh
= get_rfd (fd
, rf
);
3551 xref_fd
= fh
- debug_info
->fdr
;
3553 if (rn
->index
>= fh
->csym
)
3555 /* File indirect entry is corrupt. */
3556 *pname
= "<illegal>";
3557 complain (&bad_rfd_entry_complaint
,
3558 sym_name
, xref_fd
, rn
->index
);
3562 /* If we have processed this symbol then we left a forwarding
3563 pointer to the type in the pending list. If not, we`ll put
3564 it in a list of pending types, to be processed later when
3565 the file will be. In any event, we collect the name for the
3568 esh
= ((char *) debug_info
->external_sym
3569 + ((fh
->isymBase
+ rn
->index
)
3570 * debug_swap
->external_sym_size
));
3571 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3573 /* Make sure that this type of cross reference can be handled. */
3574 if ((sh
.sc
!= scInfo
3575 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3576 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3577 && sh
.st
!= stEnum
))
3578 && (sh
.st
!= stBlock
|| (sh
.sc
!= scCommon
&& sh
.sc
!= scSCommon
)))
3580 /* File indirect entry is corrupt. */
3581 *pname
= "<illegal>";
3582 complain (&bad_rfd_entry_complaint
,
3583 sym_name
, xref_fd
, rn
->index
);
3587 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3589 pend
= is_pending_symbol (fh
, esh
);
3594 /* We have not yet seen this type. */
3596 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3600 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3602 a) forward declarations of structs/unions/enums which are not
3603 defined in this compilation unit.
3604 For these the type will be void. This is a bad design decision
3605 as cross referencing across compilation units is impossible
3606 due to the missing name.
3607 b) forward declarations of structs/unions/enums/typedefs which
3608 are defined later in this file or in another file in the same
3609 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3610 Simply cross reference those again to get the true type.
3611 The forward references are not entered in the pending list and
3612 in the symbol table. */
3614 (*debug_swap
->swap_tir_in
) (bigend
,
3615 &(debug_info
->external_aux
3616 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3618 if (tir
.tq0
!= tqNil
)
3619 complain (&illegal_forward_tq0_complaint
, sym_name
);
3623 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3625 *pname
= "<undefined>";
3632 (debug_info
->external_aux
3633 + fh
->iauxBase
+ sh
.index
+ 1),
3634 tpp
, type_code
, pname
,
3635 fh
->fBigendian
, sym_name
);
3639 /* Follow a forward typedef. This might recursively
3640 call cross_ref till we get a non typedef'ed type.
3641 FIXME: This is not correct behaviour, but gdb currently
3642 cannot handle typedefs without type copying. Type
3643 copying is impossible as we might have mutual forward
3644 references between two files and the copied type would not
3645 get filled in when we later parse its definition. */
3646 *tpp
= parse_type (xref_fd
,
3647 debug_info
->external_aux
+ fh
->iauxBase
,
3651 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3652 add_pending (fh
, esh
, *tpp
);
3656 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3657 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3663 else if (sh
.st
== stTypedef
)
3665 /* Parse the type for a normal typedef. This might recursively call
3666 cross_ref till we get a non typedef'ed type.
3667 FIXME: This is not correct behaviour, but gdb currently
3668 cannot handle typedefs without type copying. But type copying is
3669 impossible as we might have mutual forward references between
3670 two files and the copied type would not get filled in when
3671 we later parse its definition. */
3672 *tpp
= parse_type (xref_fd
,
3673 debug_info
->external_aux
+ fh
->iauxBase
,
3677 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3681 /* Cross reference to a struct/union/enum which is defined
3682 in another file in the same compilation unit but that file
3683 has not been parsed yet.
3684 Initialize the type only, it will be filled in when
3685 it's definition is parsed. */
3686 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3688 add_pending (fh
, esh
, *tpp
);
3691 /* We used one auxent normally, two if we got a "next one" rf. */
3696 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3697 keeping the symtab sorted */
3699 static struct symbol
*
3700 mylookup_symbol (name
, block
, namespace, class)
3702 register struct block
*block
;
3703 enum namespace namespace;
3704 enum address_class
class;
3706 register int bot
, top
, inc
;
3707 register struct symbol
*sym
;
3710 top
= BLOCK_NSYMS (block
);
3714 sym
= BLOCK_SYM (block
, bot
);
3715 if (SYMBOL_NAME (sym
)[0] == inc
3716 && SYMBOL_NAMESPACE (sym
) == namespace
3717 && SYMBOL_CLASS (sym
) == class
3718 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3722 block
= BLOCK_SUPERBLOCK (block
);
3724 return mylookup_symbol (name
, block
, namespace, class);
3729 /* Add a new symbol S to a block B.
3730 Infrequently, we will need to reallocate the block to make it bigger.
3731 We only detect this case when adding to top_stack->cur_block, since
3732 that's the only time we know how big the block is. FIXME. */
3739 int nsyms
= BLOCK_NSYMS (b
)++;
3740 struct block
*origb
;
3741 struct parse_stack
*stackp
;
3743 if (b
== top_stack
->cur_block
&&
3744 nsyms
>= top_stack
->maxsyms
)
3746 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3747 /* In this case shrink_block is actually grow_block, since
3748 BLOCK_NSYMS(b) is larger than its current size. */
3750 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3752 /* Now run through the stack replacing pointers to the
3753 original block. shrink_block has already done this
3754 for the blockvector and BLOCK_FUNCTION. */
3755 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3757 if (stackp
->cur_block
== origb
)
3759 stackp
->cur_block
= b
;
3760 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3764 BLOCK_SYM (b
, nsyms
) = s
;
3767 /* Add a new block B to a symtab S */
3774 struct blockvector
*bv
= BLOCKVECTOR (s
);
3776 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3777 (sizeof (struct blockvector
)
3778 + BLOCKVECTOR_NBLOCKS (bv
)
3779 * sizeof (bv
->block
)));
3780 if (bv
!= BLOCKVECTOR (s
))
3781 BLOCKVECTOR (s
) = bv
;
3783 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3786 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3787 MIPS' linenumber encoding might need more than one byte
3788 to describe it, LAST is used to detect these continuation lines.
3790 Combining lines with the same line number seems like a bad idea.
3791 E.g: There could be a line number entry with the same line number after the
3792 prologue and GDB should not ignore it (this is a better way to find
3793 a prologue than mips_skip_prologue).
3794 But due to the compressed line table format there are line number entries
3795 for the same line which are needed to bridge the gap to the next
3796 line number entry. These entries have a bogus address info with them
3797 and we are unable to tell them from intended duplicate line number
3799 This is another reason why -ggdb debugging format is preferable. */
3802 add_line (lt
, lineno
, adr
, last
)
3803 struct linetable
*lt
;
3808 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3809 Change them to something sensible. */
3813 last
= -2; /* make sure we record first line */
3815 if (last
== lineno
) /* skip continuation lines */
3818 lt
->item
[lt
->nitems
].line
= lineno
;
3819 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3823 /* Sorting and reordering procedures */
3825 /* Blocks with a smaller low bound should come first */
3828 compare_blocks (arg1
, arg2
)
3832 register int addr_diff
;
3833 struct block
**b1
= (struct block
**) arg1
;
3834 struct block
**b2
= (struct block
**) arg2
;
3836 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3838 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3842 /* Sort the blocks of a symtab S.
3843 Reorder the blocks in the blockvector by code-address,
3844 as required by some MI search routines */
3850 struct blockvector
*bv
= BLOCKVECTOR (s
);
3852 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3855 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3856 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3857 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3858 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3862 * This is very unfortunate: normally all functions are compiled in
3863 * the order they are found, but if the file is compiled -O3 things
3864 * are very different. It would be nice to find a reliable test
3865 * to detect -O3 images in advance.
3867 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3868 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3869 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3870 sizeof (struct block
*),
3874 register CORE_ADDR high
= 0;
3875 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3877 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3878 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3879 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3880 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3883 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3884 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3886 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3887 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3888 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3889 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3893 /* Constructor/restructor/destructor procedures */
3895 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3896 MAXSYMS and linenumbers MAXLINES we'll put in it */
3898 static struct symtab
*
3899 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3903 struct objfile
*objfile
;
3905 struct symtab
*s
= allocate_symtab (name
, objfile
);
3907 LINETABLE (s
) = new_linetable (maxlines
);
3909 /* All symtabs must have at least two blocks */
3910 BLOCKVECTOR (s
) = new_bvect (2);
3911 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3912 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3913 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3914 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3916 s
->free_code
= free_linetable
;
3921 /* Allocate a new partial_symtab NAME */
3923 static struct partial_symtab
*
3924 new_psymtab (name
, objfile
, section_offsets
)
3926 struct objfile
*objfile
;
3927 struct section_offsets
*section_offsets
;
3929 struct partial_symtab
*psymtab
;
3931 psymtab
= allocate_psymtab (name
, objfile
);
3932 psymtab
->section_offsets
= section_offsets
;
3934 /* Keep a backpointer to the file's symbols */
3936 psymtab
->read_symtab_private
= ((char *)
3937 obstack_alloc (&objfile
->psymbol_obstack
,
3938 sizeof (struct symloc
)));
3939 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
3940 CUR_BFD (psymtab
) = cur_bfd
;
3941 DEBUG_SWAP (psymtab
) = debug_swap
;
3942 DEBUG_INFO (psymtab
) = debug_info
;
3943 PENDING_LIST (psymtab
) = pending_list
;
3945 /* The way to turn this into a symtab is to call... */
3946 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
3951 /* Allocate a linetable array of the given SIZE. Since the struct
3952 already includes one item, we subtract one when calculating the
3953 proper size to allocate. */
3955 static struct linetable
*
3956 new_linetable (size
)
3959 struct linetable
*l
;
3961 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
3962 l
= (struct linetable
*) xmalloc (size
);
3967 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
3968 I am not so sure about the 3.4 ones.
3970 Since the struct linetable already includes one item, we subtract one when
3971 calculating the proper size to allocate. */
3973 static struct linetable
*
3974 shrink_linetable (lt
)
3975 struct linetable
*lt
;
3978 return (struct linetable
*) xrealloc ((PTR
) lt
,
3979 (sizeof (struct linetable
)
3981 * sizeof (lt
->item
))));
3984 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
3986 static struct blockvector
*
3990 struct blockvector
*bv
;
3993 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
3994 bv
= (struct blockvector
*) xzalloc (size
);
3996 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4001 /* Allocate and zero a new block of MAXSYMS symbols */
4003 static struct block
*
4007 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4009 return (struct block
*) xzalloc (size
);
4012 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4013 Shrink_block can also be used by add_symbol to grow a block. */
4015 static struct block
*
4021 struct blockvector
*bv
= BLOCKVECTOR (s
);
4024 /* Just reallocate it and fix references to the old one */
4026 new = (struct block
*) xrealloc ((PTR
) b
,
4027 (sizeof (struct block
)
4028 + ((BLOCK_NSYMS (b
) - 1)
4029 * sizeof (struct symbol
*))));
4031 /* Should chase pointers to old one. Fortunately, that`s just
4032 the block`s function and inferior blocks */
4033 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4034 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4035 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4036 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4037 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4038 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4039 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4043 /* Create a new symbol with printname NAME */
4045 static struct symbol
*
4049 struct symbol
*s
= ((struct symbol
*)
4050 obstack_alloc (¤t_objfile
->symbol_obstack
,
4051 sizeof (struct symbol
)));
4053 memset ((PTR
) s
, 0, sizeof (*s
));
4054 SYMBOL_NAME (s
) = name
;
4055 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4056 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4060 /* Create a new type with printname NAME */
4062 static struct type
*
4068 t
= alloc_type (current_objfile
);
4069 TYPE_NAME (t
) = name
;
4070 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4074 /* Read ECOFF debugging information from a BFD section. This is
4075 called from elfread.c. It parses the section into a
4076 ecoff_debug_info struct, and then lets the rest of the file handle
4080 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
4081 struct objfile
*objfile
;
4082 const struct ecoff_debug_swap
*swap
;
4084 struct section_offsets
*section_offsets
;
4086 bfd
*abfd
= objfile
->obfd
;
4087 struct ecoff_debug_info
*info
;
4089 info
= ((struct ecoff_debug_info
*)
4090 obstack_alloc (&objfile
->psymbol_obstack
,
4091 sizeof (struct ecoff_debug_info
)));
4093 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4094 error ("Error reading ECOFF debugging information: %s",
4095 bfd_errmsg (bfd_get_error ()));
4097 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
4101 /* Things used for calling functions in the inferior.
4102 These functions are exported to our companion
4103 mips-tdep.c file and are here because they play
4104 with the symbol-table explicitly. */
4106 /* Sigtramp: make sure we have all the necessary information
4107 about the signal trampoline code. Since the official code
4108 from MIPS does not do so, we make up that information ourselves.
4109 If they fix the library (unlikely) this code will neutralize itself. */
4111 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4112 here because it calls functions defined in this file, but perhaps
4113 this could be handled in a better way. */
4120 struct block
*b
, *b0
= NULL
;
4122 sigtramp_address
= -1;
4124 /* We have to handle the following cases here:
4125 a) The Mips library has a sigtramp label within sigvec.
4126 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4127 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4130 b0
= SYMBOL_BLOCK_VALUE (s
);
4131 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4135 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4136 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4139 /* But maybe this program uses its own version of sigvec */
4143 /* Did we or MIPSco fix the library ? */
4144 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4146 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4147 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4151 sigtramp_address
= SYMBOL_VALUE (s
);
4152 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4154 /* But what symtab does it live in ? */
4155 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4158 * Ok, there goes the fix: turn it into a procedure, with all the
4159 * needed info. Note we make it a nested procedure of sigvec,
4160 * which is the way the (assembly) code is actually written.
4162 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4163 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4164 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4166 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4168 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4170 SYMBOL_BLOCK_VALUE (s
) = b
;
4171 BLOCK_START (b
) = sigtramp_address
;
4172 BLOCK_END (b
) = sigtramp_end
;
4173 BLOCK_FUNCTION (b
) = s
;
4174 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4178 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4180 struct mips_extra_func_info
*e
=
4181 ((struct mips_extra_func_info
*)
4182 xzalloc (sizeof (struct mips_extra_func_info
)));
4184 e
->numargs
= 0; /* the kernel thinks otherwise */
4185 e
->pdr
.frameoffset
= 32;
4186 e
->pdr
.framereg
= SP_REGNUM
;
4187 /* Note that setting pcreg is no longer strictly necessary as
4188 mips_frame_saved_pc is now aware of signal handler frames. */
4189 e
->pdr
.pcreg
= PC_REGNUM
;
4190 e
->pdr
.regmask
= -2;
4191 /* Offset to saved r31, in the sigtramp case the saved registers
4192 are above the frame in the sigcontext.
4193 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4194 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4195 and 32 * 4 bytes for the floating point registers. */
4196 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4197 e
->pdr
.fregmask
= -1;
4198 /* Offset to saved f30 (first saved *double* register). */
4199 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4200 e
->pdr
.isym
= (long) s
;
4201 e
->pdr
.adr
= sigtramp_address
;
4203 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4204 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4205 SYMBOL_VALUE (s
) = (long) e
;
4206 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4207 SYMBOL_CLASS (s
) = LOC_CONST
;
4208 SYMBOL_TYPE (s
) = mdebug_type_void
;
4209 current_objfile
= NULL
;
4212 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4216 _initialize_mdebugread ()
4219 init_type (TYPE_CODE_VOID
, 1,
4221 "void", (struct objfile
*) NULL
);
4223 init_type (TYPE_CODE_INT
, 1,
4225 "char", (struct objfile
*) NULL
);
4226 mdebug_type_unsigned_char
=
4227 init_type (TYPE_CODE_INT
, 1,
4229 "unsigned char", (struct objfile
*) NULL
);
4231 init_type (TYPE_CODE_INT
, 2,
4233 "short", (struct objfile
*) NULL
);
4234 mdebug_type_unsigned_short
=
4235 init_type (TYPE_CODE_INT
, 2,
4237 "unsigned short", (struct objfile
*) NULL
);
4238 mdebug_type_int_32
=
4239 init_type (TYPE_CODE_INT
, 4,
4241 "int", (struct objfile
*) NULL
);
4242 mdebug_type_unsigned_int_32
=
4243 init_type (TYPE_CODE_INT
, 4,
4245 "unsigned int", (struct objfile
*) NULL
);
4246 mdebug_type_int_64
=
4247 init_type (TYPE_CODE_INT
, 8,
4249 "int", (struct objfile
*) NULL
);
4250 mdebug_type_unsigned_int_64
=
4251 init_type (TYPE_CODE_INT
, 8,
4253 "unsigned int", (struct objfile
*) NULL
);
4254 mdebug_type_long_32
=
4255 init_type (TYPE_CODE_INT
, 4,
4257 "long", (struct objfile
*) NULL
);
4258 mdebug_type_unsigned_long_32
=
4259 init_type (TYPE_CODE_INT
, 4,
4261 "unsigned long", (struct objfile
*) NULL
);
4262 mdebug_type_long_64
=
4263 init_type (TYPE_CODE_INT
, 8,
4265 "long", (struct objfile
*) NULL
);
4266 mdebug_type_unsigned_long_64
=
4267 init_type (TYPE_CODE_INT
, 8,
4269 "unsigned long", (struct objfile
*) NULL
);
4270 mdebug_type_long_long_64
=
4271 init_type (TYPE_CODE_INT
, 8,
4273 "long long", (struct objfile
*) NULL
);
4274 mdebug_type_unsigned_long_long_64
=
4275 init_type (TYPE_CODE_INT
, 8,
4277 "unsigned long long", (struct objfile
*) NULL
);
4278 mdebug_type_adr_32
=
4279 init_type (TYPE_CODE_PTR
, 4,
4281 "adr_32", (struct objfile
*) NULL
);
4282 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4283 mdebug_type_adr_64
=
4284 init_type (TYPE_CODE_PTR
, 8,
4286 "adr_64", (struct objfile
*) NULL
);
4287 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4289 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4291 "float", (struct objfile
*) NULL
);
4292 mdebug_type_double
=
4293 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4295 "double", (struct objfile
*) NULL
);
4296 mdebug_type_complex
=
4297 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4299 "complex", (struct objfile
*) NULL
);
4300 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4301 mdebug_type_double_complex
=
4302 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4304 "double complex", (struct objfile
*) NULL
);
4305 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4307 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4309 mdebug_type_string
=
4310 init_type (TYPE_CODE_STRING
,
4311 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4313 (struct objfile
*) NULL
);
4315 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4316 good? Would we be better off with TYPE_CODE_ERROR? Should
4317 TYPE_CODE_ERROR print things in hex if it knows the size? */
4318 mdebug_type_fixed_dec
=
4319 init_type (TYPE_CODE_INT
,
4320 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4322 (struct objfile
*) NULL
);
4324 mdebug_type_float_dec
=
4325 init_type (TYPE_CODE_ERROR
,
4326 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4327 0, "floating decimal",
4328 (struct objfile
*) NULL
);
4330 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4331 "<function, no debug info>", NULL
);
4332 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4333 nodebug_var_symbol_type
=
4334 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4335 "<variable, no debug info>", NULL
);