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 /* These are needed if the tm.h file does not contain the necessary
54 mips specific definitions. */
56 #ifndef MIPS_EFI_SYMBOL_NAME
57 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
59 #include "coff/symconst.h"
60 typedef struct mips_extra_func_info
{
63 } *mips_extra_func_info_t
;
70 #include <sys/types.h>
73 #include <sys/param.h>
76 #include "gdb_string.h"
78 #include "gdb-stabs.h"
82 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
84 #include "libaout.h" /* Private BFD a.out information. */
85 #include "aout/aout64.h"
86 #include "aout/stab_gnu.h" /* STABS information */
88 #include "expression.h"
89 #include "language.h" /* Needed inside partial-stab.h */
91 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
92 #ifndef ECOFF_REG_TO_REGNUM
93 #define ECOFF_REG_TO_REGNUM(num) (num)
96 /* We put a pointer to this structure in the read_symtab_private field
101 /* Index of the FDR that this psymtab represents. */
103 /* The BFD that the psymtab was created from. */
105 const struct ecoff_debug_swap
*debug_swap
;
106 struct ecoff_debug_info
*debug_info
;
107 struct mdebug_pending
**pending_list
;
108 /* Pointer to external symbols for this file. */
110 /* Size of extern_tab. */
112 enum language pst_language
;
115 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
116 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
117 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
118 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
119 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
120 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
122 /* Things we import explicitly from other modules */
124 extern int info_verbose
;
126 /* Various complaints about symbol reading that don't abort the process */
128 static struct complaint bad_file_number_complaint
=
129 {"bad file number %d", 0, 0};
131 static struct complaint index_complaint
=
132 {"bad aux index at symbol %s", 0, 0};
134 static struct complaint aux_index_complaint
=
135 {"bad proc end in aux found from symbol %s", 0, 0};
137 static struct complaint block_index_complaint
=
138 {"bad aux index at block symbol %s", 0, 0};
140 static struct complaint unknown_ext_complaint
=
141 {"unknown external symbol %s", 0, 0};
143 static struct complaint unknown_sym_complaint
=
144 {"unknown local symbol %s", 0, 0};
146 static struct complaint unknown_st_complaint
=
147 {"with type %d", 0, 0};
149 static struct complaint block_overflow_complaint
=
150 {"block containing %s overfilled", 0, 0};
152 static struct complaint basic_type_complaint
=
153 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
155 static struct complaint unknown_type_qual_complaint
=
156 {"unknown type qualifier 0x%x", 0, 0};
158 static struct complaint array_index_type_complaint
=
159 {"illegal array index type for %s, assuming int", 0, 0};
161 static struct complaint bad_tag_guess_complaint
=
162 {"guessed tag type of %s incorrectly", 0, 0};
164 static struct complaint block_member_complaint
=
165 {"declaration block contains unhandled symbol type %d", 0, 0};
167 static struct complaint stEnd_complaint
=
168 {"stEnd with storage class %d not handled", 0, 0};
170 static struct complaint unknown_mdebug_symtype_complaint
=
171 {"unknown symbol type 0x%x", 0, 0};
173 static struct complaint stab_unknown_complaint
=
174 {"unknown stabs symbol %s", 0, 0};
176 static struct complaint pdr_for_nonsymbol_complaint
=
177 {"PDR for %s, but no symbol", 0, 0};
179 static struct complaint pdr_static_symbol_complaint
=
180 {"can't handle PDR for static proc at 0x%lx", 0, 0};
182 static struct complaint bad_setjmp_pdr_complaint
=
183 {"fixing bad setjmp PDR from libc", 0, 0};
185 static struct complaint bad_fbitfield_complaint
=
186 {"can't handle TIR fBitfield for %s", 0, 0};
188 static struct complaint bad_continued_complaint
=
189 {"illegal TIR continued for %s", 0, 0};
191 static struct complaint bad_rfd_entry_complaint
=
192 {"bad rfd entry for %s: file %d, index %d", 0, 0};
194 static struct complaint unexpected_type_code_complaint
=
195 {"unexpected type code for %s", 0, 0};
197 static struct complaint unable_to_cross_ref_complaint
=
198 {"unable to cross ref btTypedef for %s", 0, 0};
200 static struct complaint bad_indirect_xref_complaint
=
201 {"unable to cross ref btIndirect for %s", 0, 0};
203 static struct complaint illegal_forward_tq0_complaint
=
204 {"illegal tq0 in forward typedef for %s", 0, 0};
206 static struct complaint illegal_forward_bt_complaint
=
207 {"illegal bt %d in forward typedef for %s", 0, 0};
209 static struct complaint bad_linetable_guess_complaint
=
210 {"guessed size of linetable for %s incorrectly", 0, 0};
212 static struct complaint bad_ext_ifd_complaint
=
213 {"bad ifd for external symbol: %d (max %d)", 0, 0};
215 static struct complaint bad_ext_iss_complaint
=
216 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
218 /* Macros and extra defs */
220 /* Puns: hard to find whether -g was used and how */
222 #define MIN_GLEVEL GLEVEL_0
223 #define compare_glevel(a,b) \
224 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
225 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
227 /* Things that really are local to this module */
229 /* Remember what we deduced to be the source language of this psymtab. */
231 static enum language psymtab_language
= language_unknown
;
237 /* How to parse debugging information for CUR_BFD. */
239 static const struct ecoff_debug_swap
*debug_swap
;
241 /* Pointers to debugging information for CUR_BFD. */
243 static struct ecoff_debug_info
*debug_info
;
245 /* Pointer to current file decriptor record, and its index */
250 /* Index of current symbol */
254 /* Note how much "debuggable" this image is. We would like
255 to see at least one FDR with full symbols */
260 /* When examining .o files, report on undefined symbols */
262 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
264 /* Pseudo symbol to use when putting stabs into the symbol table. */
266 static char stabs_symbol
[] = STABS_SYMBOL
;
268 /* Types corresponding to mdebug format bt* basic types. */
270 static struct type
*mdebug_type_void
;
271 static struct type
*mdebug_type_char
;
272 static struct type
*mdebug_type_short
;
273 static struct type
*mdebug_type_int_32
;
274 #define mdebug_type_int mdebug_type_int_32
275 static struct type
*mdebug_type_int_64
;
276 static struct type
*mdebug_type_long_32
;
277 static struct type
*mdebug_type_long_64
;
278 static struct type
*mdebug_type_long_long_64
;
279 static struct type
*mdebug_type_unsigned_char
;
280 static struct type
*mdebug_type_unsigned_short
;
281 static struct type
*mdebug_type_unsigned_int_32
;
282 static struct type
*mdebug_type_unsigned_int_64
;
283 static struct type
*mdebug_type_unsigned_long_32
;
284 static struct type
*mdebug_type_unsigned_long_64
;
285 static struct type
*mdebug_type_unsigned_long_long_64
;
286 static struct type
*mdebug_type_adr_32
;
287 static struct type
*mdebug_type_adr_64
;
288 static struct type
*mdebug_type_float
;
289 static struct type
*mdebug_type_double
;
290 static struct type
*mdebug_type_complex
;
291 static struct type
*mdebug_type_double_complex
;
292 static struct type
*mdebug_type_fixed_dec
;
293 static struct type
*mdebug_type_float_dec
;
294 static struct type
*mdebug_type_string
;
296 /* Types for symbols from files compiled without debugging info. */
298 static struct type
*nodebug_func_symbol_type
;
299 static struct type
*nodebug_var_symbol_type
;
301 /* Nonzero if we have seen ecoff debugging info for a file. */
303 static int found_ecoff_debugging_info
;
305 /* Forward declarations */
308 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
311 parse_partial_symbols
PARAMS ((struct objfile
*,
312 struct section_offsets
*));
315 *get_rfd
PARAMS ((int, int));
318 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
321 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
322 char **, int, char *));
324 static struct symbol
*
325 new_symbol
PARAMS ((char *));
328 new_type
PARAMS ((char *));
330 static struct block
*
331 new_block
PARAMS ((int));
333 static struct symtab
*
334 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
336 static struct linetable
*
337 new_linetable
PARAMS ((int));
339 static struct blockvector
*
340 new_bvect
PARAMS ((int));
343 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
346 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
348 static struct symbol
*
349 mylookup_symbol
PARAMS ((char *, struct block
*, enum namespace,
350 enum address_class
));
352 static struct block
*
353 shrink_block
PARAMS ((struct block
*, struct symtab
*));
356 xzalloc
PARAMS ((unsigned int));
359 sort_blocks
PARAMS ((struct symtab
*));
362 compare_blocks
PARAMS ((const void *, const void *));
364 static struct partial_symtab
*
365 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
368 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
371 add_block
PARAMS ((struct block
*, struct symtab
*));
374 add_symbol
PARAMS ((struct symbol
*, struct block
*));
377 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
379 static struct linetable
*
380 shrink_linetable
PARAMS ((struct linetable
*));
383 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int));
386 mdebug_next_symbol_text
PARAMS ((void));
388 /* Address bounds for the signal trampoline in inferior, if any */
390 CORE_ADDR sigtramp_address
, sigtramp_end
;
392 /* Allocate zeroed memory */
398 PTR p
= xmalloc (size
);
404 /* Exported procedure: Builds a symtab from the PST partial one.
405 Restores the environment in effect when PST was created, delegates
406 most of the work to an ancillary procedure, and sorts
407 and reorders the symtab list at the end */
410 mdebug_psymtab_to_symtab (pst
)
411 struct partial_symtab
*pst
;
419 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
420 gdb_flush (gdb_stdout
);
423 next_symbol_text_func
= mdebug_next_symbol_text
;
425 psymtab_to_symtab_1 (pst
, pst
->filename
);
427 /* Match with global symbols. This only needs to be done once,
428 after all of the symtabs and dependencies have been read in. */
429 scan_file_globals (pst
->objfile
);
432 printf_filtered ("done.\n");
435 /* File-level interface functions */
437 /* Find a file descriptor given its index RF relative to a file CF */
447 fdrs
= debug_info
->fdr
;
449 /* Object files do not have the RFD table, all refs are absolute */
452 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
453 ((char *) debug_info
->external_rfd
455 * debug_swap
->external_rfd_size
)),
460 /* Return a safer print NAME for a file descriptor */
467 return "<stripped file>";
470 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
474 /* Read in and parse the symtab of the file OBJFILE. Symbols from
475 different sections are relocated via the SECTION_OFFSETS. */
478 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
479 struct objfile
*objfile
;
480 const struct ecoff_debug_swap
*swap
;
481 struct ecoff_debug_info
*info
;
482 struct section_offsets
*section_offsets
;
484 cur_bfd
= objfile
->obfd
;
488 /* Make sure all the FDR information is swapped in. */
489 if (info
->fdr
== (FDR
*) NULL
)
495 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
496 (info
->symbolic_header
.ifdMax
498 fdr_src
= info
->external_fdr
;
500 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
502 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
503 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
506 parse_partial_symbols (objfile
, section_offsets
);
509 /* Check to make sure file was compiled with -g. If not, warn the
510 user of this limitation. */
511 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
513 if (max_gdbinfo
== 0)
514 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
516 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
517 gdb_flush (gdb_stdout
);
522 /* Local utilities */
524 /* Map of FDR indexes to partial symtabs */
528 struct partial_symtab
*pst
; /* the psymtab proper */
529 long n_globals
; /* exported globals (external symbols) */
530 long globals_offset
; /* cumulative */
534 /* Utility stack, used to nest procedures and blocks properly.
535 It is a doubly linked list, to avoid too many alloc/free.
536 Since we might need it quite a few times it is NOT deallocated
539 static struct parse_stack
541 struct parse_stack
*next
, *prev
;
542 struct symtab
*cur_st
; /* Current symtab. */
543 struct block
*cur_block
; /* Block in it. */
545 /* What are we parsing. stFile, or stBlock are for files and
546 blocks. stProc or stStaticProc means we have seen the start of a
547 procedure, but not the start of the block within in. When we see
548 the start of that block, we change it to stNil, without pushing a
549 new block, i.e. stNil means both a procedure and a block. */
553 int maxsyms
; /* Max symbols in this block. */
554 struct type
*cur_type
; /* Type we parse fields for. */
555 int cur_field
; /* Field number in cur_type. */
556 CORE_ADDR procadr
; /* Start addres of this procedure */
557 int numargs
; /* Its argument count */
560 *top_stack
; /* Top stack ptr */
563 /* Enter a new lexical context */
568 struct parse_stack
*new;
570 /* Reuse frames if possible */
571 if (top_stack
&& top_stack
->prev
)
572 new = top_stack
->prev
;
574 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
575 /* Initialize new frame with previous content */
578 register struct parse_stack
*prev
= new->prev
;
581 top_stack
->prev
= new;
583 new->next
= top_stack
;
588 /* Exit a lexical context */
596 top_stack
= top_stack
->next
;
600 /* Cross-references might be to things we haven't looked at
601 yet, e.g. type references. To avoid too many type
602 duplications we keep a quick fixup table, an array
603 of lists of references indexed by file descriptor */
605 struct mdebug_pending
607 struct mdebug_pending
*next
; /* link */
608 char *s
; /* the unswapped symbol */
609 struct type
*t
; /* its partial type descriptor */
613 /* The pending information is kept for an entire object file, and used
614 to be in the sym_private field. I took it out when I split
615 mdebugread from mipsread, because this might not be the only type
616 of symbols read from an object file. Instead, we allocate the
617 pending information table when we create the partial symbols, and
618 we store a pointer to the single table in each psymtab. */
620 static struct mdebug_pending
**pending_list
;
622 /* Check whether we already saw symbol SH in file FH */
624 static struct mdebug_pending
*
625 is_pending_symbol (fh
, sh
)
629 int f_idx
= fh
- debug_info
->fdr
;
630 register struct mdebug_pending
*p
;
632 /* Linear search is ok, list is typically no more than 10 deep */
633 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
639 /* Add a new symbol SH of type T */
642 add_pending (fh
, sh
, t
)
647 int f_idx
= fh
- debug_info
->fdr
;
648 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
650 /* Make sure we do not make duplicates */
653 p
= ((struct mdebug_pending
*)
654 obstack_alloc (¤t_objfile
->psymbol_obstack
,
655 sizeof (struct mdebug_pending
)));
658 p
->next
= pending_list
[f_idx
];
659 pending_list
[f_idx
] = p
;
664 /* Parsing Routines proper. */
666 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
667 For blocks, procedures and types we open a new lexical context.
668 This is basically just a big switch on the symbol's type. Argument
669 AX is the base pointer of aux symbols for this file (fh->iauxBase).
670 EXT_SH points to the unswapped symbol, which is needed for struct,
671 union, etc., types; it is NULL for an EXTR. BIGEND says whether
672 aux symbols are big-endian or little-endian. Return count of
673 SYMR's handled (normally one). */
676 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
681 struct section_offsets
*section_offsets
;
683 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
684 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
685 debug_swap
->swap_sym_in
;
689 struct mdebug_pending
*pend
;
693 enum address_class
class;
695 long svalue
= sh
->value
;
698 if (ext_sh
== (char *) NULL
)
699 name
= debug_info
->ssext
+ sh
->iss
;
701 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
706 /* Do not relocate relative values.
707 The value of a stEnd symbol is the displacement from the
708 corresponding start symbol value.
709 The value of a stBlock symbol is the displacement from the
710 procedure address. */
711 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
712 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
719 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
723 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
732 case stGlobal
: /* external symbol, goes into global block */
734 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
736 s
= new_symbol (name
);
737 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
740 case stStatic
: /* static data, goes into current block. */
742 b
= top_stack
->cur_block
;
743 s
= new_symbol (name
);
744 if (sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
746 /* It is a FORTRAN common block. At least for SGI Fortran the
747 address is not in the symbol; we need to fix it later in
748 scan_file_globals. */
749 int bucket
= hashname (SYMBOL_NAME (s
));
750 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
751 global_sym_chain
[bucket
] = s
;
754 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
757 case stLocal
: /* local variable, goes into current block */
758 if (sh
->sc
== scRegister
)
760 class = LOC_REGISTER
;
761 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
765 b
= top_stack
->cur_block
;
766 s
= new_symbol (name
);
767 SYMBOL_VALUE (s
) = svalue
;
769 data
: /* Common code for symbols describing data */
770 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
771 SYMBOL_CLASS (s
) = class;
774 /* Type could be missing if file is compiled without debugging info. */
775 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
|| sh
->index
== indexNil
)
776 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
778 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
779 /* Value of a data symbol is its memory address */
782 case stParam
: /* arg to procedure, goes into current block */
784 found_ecoff_debugging_info
= 1;
785 top_stack
->numargs
++;
787 /* Special GNU C++ name. */
788 if (name
[0] == CPLUS_MARKER
&& name
[1] == 't' && name
[2] == 0)
789 name
= "this"; /* FIXME, not alloc'd in obstack */
790 s
= new_symbol (name
);
792 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
796 /* Pass by value in register. */
797 SYMBOL_CLASS(s
) = LOC_REGPARM
;
798 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
801 /* Pass by reference on stack. */
802 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
805 /* Pass by reference in register. */
806 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
807 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
810 /* Pass by value on stack. */
811 SYMBOL_CLASS(s
) = LOC_ARG
;
814 SYMBOL_VALUE (s
) = svalue
;
815 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
816 add_symbol (s
, top_stack
->cur_block
);
819 case stLabel
: /* label, goes into current block */
820 s
= new_symbol (name
);
821 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
822 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
823 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
824 SYMBOL_TYPE (s
) = mdebug_type_int
;
825 add_symbol (s
, top_stack
->cur_block
);
828 case stProc
: /* Procedure, usually goes into global block */
829 case stStaticProc
: /* Static procedure, goes into current block */
830 s
= new_symbol (name
);
831 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
832 SYMBOL_CLASS (s
) = LOC_BLOCK
;
833 /* Type of the return value */
834 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
837 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
838 b
= top_stack
->cur_block
;
839 if (sh
->st
== stProc
)
841 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
842 /* The next test should normally be true, but provides a
843 hook for nested functions (which we don't want to make
845 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
846 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
847 /* Irix 5 sometimes has duplicate names for the same
848 function. We want to add such names up at the global
849 level, not as a nested function. */
850 else if (sh
->value
== top_stack
->procadr
)
851 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
855 /* Make a type for the procedure itself */
856 SYMBOL_TYPE (s
) = lookup_function_type (t
);
858 /* Create and enter a new lexical context */
859 b
= new_block (top_stack
->maxsyms
);
860 SYMBOL_BLOCK_VALUE (s
) = b
;
861 BLOCK_FUNCTION (b
) = s
;
862 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
863 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
864 add_block (b
, top_stack
->cur_st
);
866 /* Not if we only have partial info */
867 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
871 top_stack
->cur_block
= b
;
872 top_stack
->blocktype
= sh
->st
;
873 top_stack
->cur_type
= SYMBOL_TYPE (s
);
874 top_stack
->cur_field
= -1;
875 top_stack
->procadr
= sh
->value
;
876 top_stack
->numargs
= 0;
879 /* Beginning of code for structure, union, and enum definitions.
880 They all share a common set of local variables, defined here. */
882 enum type_code type_code
;
888 case stStruct
: /* Start a block defining a struct type */
889 type_code
= TYPE_CODE_STRUCT
;
890 goto structured_common
;
892 case stUnion
: /* Start a block defining a union type */
893 type_code
= TYPE_CODE_UNION
;
894 goto structured_common
;
896 case stEnum
: /* Start a block defining an enum type */
897 type_code
= TYPE_CODE_ENUM
;
898 goto structured_common
;
900 case stBlock
: /* Either a lexical block, or some type */
901 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
&& sh
->sc
!= scSCommon
)
902 goto case_stBlock_code
; /* Lexical block */
904 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
906 /* Common code for handling struct, union, enum, and/or as-yet-
907 unknown-type blocks of info about structured data. `type_code'
908 has been set to the proper TYPE_CODE, if we know it. */
910 found_ecoff_debugging_info
= 1;
912 top_stack
->blocktype
= stBlock
;
914 /* First count the number of fields and the highest value. */
917 for (ext_tsym
= ext_sh
+ external_sym_size
;
919 ext_tsym
+= external_sym_size
)
923 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
931 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
932 /* If the type of the member is Nil (or Void),
933 without qualifiers, assume the tag is an
935 if (tsym
.index
== indexNil
)
936 type_code
= TYPE_CODE_ENUM
;
939 (*debug_swap
->swap_tir_in
) (bigend
,
940 &ax
[tsym
.index
].a_ti
,
942 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
944 type_code
= TYPE_CODE_ENUM
;
947 if (tsym
.value
> max_value
)
948 max_value
= tsym
.value
;
957 /* This is a no-op; is it trying to tell us something
958 we should be checking? */
959 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
963 /* This is something like a struct within a
964 struct. Skip over the fields of the inner
965 struct. The -1 is because the for loop will
966 increment ext_tsym. */
967 ext_tsym
= ((char *) debug_info
->external_sym
968 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
969 * external_sym_size
));
975 /* mips cc puts out a typedef for struct x if it is not yet
976 defined when it encounters
977 struct y { struct x *xp; };
982 /* Irix5 cc puts out a stIndirect for struct x if it is not
983 yet defined when it encounters
984 struct y { struct x *xp; };
989 complain (&block_member_complaint
, tsym
.st
);
994 /* In an stBlock, there is no way to distinguish structs,
995 unions, and enums at this point. This is a bug in the
996 original design (that has been fixed with the recent
997 addition of the stStruct, stUnion, and stEnum symbol
998 types.) The way you can tell is if/when you see a variable
999 or field of that type. In that case the variable's type
1000 (in the AUX table) says if the type is struct, union, or
1001 enum, and points back to the stBlock here. So you can
1002 patch the tag kind up later - but only if there actually is
1003 a variable or field of that type.
1005 So until we know for sure, we will guess at this point.
1007 If the first member has index==indexNil or a void type,
1008 assume we have an enumeration.
1009 Otherwise, if there is more than one member, and all
1010 the members have offset 0, assume we have a union.
1011 Otherwise, assume we have a struct.
1013 The heuristic could guess wrong in the case of of an
1014 enumeration with no members or a union with one (or zero)
1015 members, or when all except the last field of a struct have
1016 width zero. These are uncommon and/or illegal situations,
1017 and in any case guessing wrong probably doesn't matter
1020 But if we later do find out we were wrong, we fixup the tag
1021 kind. Members of an enumeration must be handled
1022 differently from struct/union fields, and that is harder to
1023 patch up, but luckily we shouldn't need to. (If there are
1024 any enumeration members, we can tell for sure it's an enum
1027 if (type_code
== TYPE_CODE_UNDEF
)
1028 if (nfields
> 1 && max_value
== 0)
1029 type_code
= TYPE_CODE_UNION
;
1031 type_code
= TYPE_CODE_STRUCT
;
1033 /* Create a new type or use the pending type. */
1034 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1035 if (pend
== (struct mdebug_pending
*) NULL
)
1037 t
= new_type (NULL
);
1038 add_pending (cur_fdr
, ext_sh
, t
);
1043 /* Do not set the tag name if it is a compiler generated tag name
1044 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1045 Alpha cc puts out an sh->iss of zero for those. */
1046 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1047 TYPE_TAG_NAME (t
) = NULL
;
1049 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1052 TYPE_CODE (t
) = type_code
;
1053 TYPE_LENGTH (t
) = sh
->value
;
1054 TYPE_NFIELDS (t
) = nfields
;
1055 TYPE_FIELDS (t
) = f
= ((struct field
*)
1057 nfields
* sizeof (struct field
)));
1059 if (type_code
== TYPE_CODE_ENUM
)
1061 int unsigned_enum
= 1;
1063 /* This is a non-empty enum. */
1065 /* DEC c89 has the number of enumerators in the sh.value field,
1066 not the type length, so we have to compensate for that
1067 incompatibility quirk.
1068 This might do the wrong thing for an enum with one or two
1069 enumerators and gcc -gcoff -fshort-enums, but these cases
1070 are hopefully rare enough.
1071 Alpha cc -migrate has a sh.value field of zero, we adjust
1073 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1074 || TYPE_LENGTH (t
) == 0)
1075 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1076 for (ext_tsym
= ext_sh
+ external_sym_size
;
1078 ext_tsym
+= external_sym_size
)
1081 struct symbol
*enum_sym
;
1083 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1085 if (tsym
.st
!= stMember
)
1088 f
->bitpos
= tsym
.value
;
1090 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1093 enum_sym
= ((struct symbol
*)
1094 obstack_alloc (¤t_objfile
->symbol_obstack
,
1095 sizeof (struct symbol
)));
1096 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1097 SYMBOL_NAME (enum_sym
) = f
->name
;
1098 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1099 SYMBOL_TYPE (enum_sym
) = t
;
1100 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1101 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1102 if (SYMBOL_VALUE (enum_sym
) < 0)
1104 add_symbol (enum_sym
, top_stack
->cur_block
);
1106 /* Skip the stMembers that we've handled. */
1111 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1113 /* make this the current type */
1114 top_stack
->cur_type
= t
;
1115 top_stack
->cur_field
= 0;
1117 /* Do not create a symbol for alpha cc unnamed structs. */
1121 /* gcc puts out an empty struct for an opaque struct definitions,
1122 do not create a symbol for it either. */
1123 if (TYPE_NFIELDS (t
) == 0)
1125 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1129 s
= new_symbol (name
);
1130 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1131 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1132 SYMBOL_VALUE (s
) = 0;
1133 SYMBOL_TYPE (s
) = t
;
1134 add_symbol (s
, top_stack
->cur_block
);
1137 /* End of local variables shared by struct, union, enum, and
1138 block (as yet unknown struct/union/enum) processing. */
1142 found_ecoff_debugging_info
= 1;
1143 /* beginnning of (code) block. Value of symbol
1144 is the displacement from procedure start */
1145 push_parse_stack ();
1147 /* Do not start a new block if this is the outermost block of a
1148 procedure. This allows the LOC_BLOCK symbol to point to the
1149 block with the local variables, so funcname::var works. */
1150 if (top_stack
->blocktype
== stProc
1151 || top_stack
->blocktype
== stStaticProc
)
1153 top_stack
->blocktype
= stNil
;
1157 top_stack
->blocktype
= stBlock
;
1158 b
= new_block (top_stack
->maxsyms
);
1159 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1160 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1161 top_stack
->cur_block
= b
;
1162 add_block (b
, top_stack
->cur_st
);
1165 case stEnd
: /* end (of anything) */
1166 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
1168 /* Finished with type */
1169 top_stack
->cur_type
= 0;
1171 else if (sh
->sc
== scText
&&
1172 (top_stack
->blocktype
== stProc
||
1173 top_stack
->blocktype
== stStaticProc
))
1175 /* Finished with procedure */
1176 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1177 struct mips_extra_func_info
*e
;
1179 struct type
*ftype
= top_stack
->cur_type
;
1182 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1184 /* Make up special symbol to contain procedure specific info */
1185 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1186 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1187 SYMBOL_CLASS (s
) = LOC_CONST
;
1188 SYMBOL_TYPE (s
) = mdebug_type_void
;
1189 e
= ((struct mips_extra_func_info
*)
1190 obstack_alloc (¤t_objfile
->symbol_obstack
,
1191 sizeof (struct mips_extra_func_info
)));
1192 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
1193 SYMBOL_VALUE (s
) = (long) e
;
1194 e
->numargs
= top_stack
->numargs
;
1195 e
->pdr
.framereg
= -1;
1196 add_symbol (s
, top_stack
->cur_block
);
1198 /* Reallocate symbols, saving memory */
1199 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1201 /* f77 emits proc-level with address bounds==[0,0],
1202 So look for such child blocks, and patch them. */
1203 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1205 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1206 if (BLOCK_SUPERBLOCK (b_bad
) == b
1207 && BLOCK_START (b_bad
) == top_stack
->procadr
1208 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1210 BLOCK_START (b_bad
) = BLOCK_START (b
);
1211 BLOCK_END (b_bad
) = BLOCK_END (b
);
1215 if (TYPE_NFIELDS (ftype
) <= 0)
1217 /* No parameter type information is recorded with the function's
1218 type. Set that from the type of the parameter symbols. */
1219 int nparams
= top_stack
->numargs
;
1225 TYPE_NFIELDS (ftype
) = nparams
;
1226 TYPE_FIELDS (ftype
) = (struct field
*)
1227 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1229 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1231 sym
= BLOCK_SYM (b
, i
);
1232 switch (SYMBOL_CLASS (sym
))
1237 case LOC_REGPARM_ADDR
:
1238 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1248 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1250 /* End of (code) block. The value of the symbol is the
1251 displacement from the procedure`s start address of the
1252 end of this block. */
1253 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1254 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1256 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1258 /* End of outermost block. Pop parse stack and ignore. The
1259 following stEnd of stProc will take care of the block. */
1262 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1264 /* End of file. Pop parse stack and ignore. Higher
1265 level code deals with this. */
1269 complain (&stEnd_complaint
, sh
->sc
);
1271 pop_parse_stack (); /* restore previous lexical context */
1274 case stMember
: /* member of struct or union */
1275 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1277 f
->bitpos
= sh
->value
;
1279 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1280 f
->bitsize
= bitsize
;
1283 case stIndirect
: /* forward declaration on Irix5 */
1284 /* Forward declarations from Irix5 cc are handled by cross_ref,
1288 case stTypedef
: /* type definition */
1289 found_ecoff_debugging_info
= 1;
1291 /* Typedefs for forward declarations and opaque structs from alpha cc
1292 are handled by cross_ref, skip them. */
1296 /* Parse the type or use the pending type. */
1297 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1298 if (pend
== (struct mdebug_pending
*) NULL
)
1300 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1301 add_pending (cur_fdr
, ext_sh
, t
);
1306 /* mips cc puts out a typedef with the name of the struct for forward
1307 declarations. These should not go into the symbol table and
1308 TYPE_NAME should not be set for them.
1309 They can't be distinguished from an intentional typedef to
1310 the same name however:
1312 struct x { int ix; int jx; };
1316 struct xx {int ixx; int jxx; };
1317 generates a cross referencing stTypedef for x and xx.
1318 The user visible effect of this is that the type of a pointer
1319 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1320 The problem is fixed with alpha cc and Irix5 cc. */
1322 /* However if the typedef cross references to an opaque aggregate, it
1323 is safe to omit it from the symbol table. */
1325 if (has_opaque_xref (cur_fdr
, sh
))
1327 s
= new_symbol (name
);
1328 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1329 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1330 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1331 SYMBOL_TYPE (s
) = t
;
1332 add_symbol (s
, top_stack
->cur_block
);
1334 /* Incomplete definitions of structs should not get a name. */
1335 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1336 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1337 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1338 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1340 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1341 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1343 /* If we are giving a name to a type such as "pointer to
1344 foo" or "function returning foo", we better not set
1345 the TYPE_NAME. If the program contains "typedef char
1346 *caddr_t;", we don't want all variables of type char
1347 * to print as caddr_t. This is not just a
1348 consequence of GDB's type management; CC and GCC (at
1349 least through version 2.4) both output variables of
1350 either type char * or caddr_t with the type
1351 refering to the stTypedef symbol for caddr_t. If a future
1352 compiler cleans this up it GDB is not ready for it
1353 yet, but if it becomes ready we somehow need to
1354 disable this check (without breaking the PCC/GCC2.4
1359 Fortunately, this check seems not to be necessary
1360 for anything except pointers or functions. */
1363 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1367 case stFile
: /* file name */
1368 push_parse_stack ();
1369 top_stack
->blocktype
= sh
->st
;
1372 /* I`ve never seen these for C */
1374 break; /* register relocation */
1376 break; /* forwarding address */
1378 break; /* constant */
1380 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1387 /* Parse the type information provided in the raw AX entries for
1388 the symbol SH. Return the bitfield size in BS, in case.
1389 We must byte-swap the AX entries before we use them; BIGEND says whether
1390 they are big-endian or little-endian (from fh->fBigendian). */
1392 static struct type
*
1393 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1396 unsigned int aux_index
;
1401 /* Null entries in this map are treated specially */
1402 static struct type
**map_bt
[] =
1404 &mdebug_type_void
, /* btNil */
1405 &mdebug_type_adr_32
, /* btAdr */
1406 &mdebug_type_char
, /* btChar */
1407 &mdebug_type_unsigned_char
, /* btUChar */
1408 &mdebug_type_short
, /* btShort */
1409 &mdebug_type_unsigned_short
, /* btUShort */
1410 &mdebug_type_int_32
, /* btInt */
1411 &mdebug_type_unsigned_int_32
, /* btUInt */
1412 &mdebug_type_long_32
, /* btLong */
1413 &mdebug_type_unsigned_long_32
, /* btULong */
1414 &mdebug_type_float
, /* btFloat */
1415 &mdebug_type_double
, /* btDouble */
1422 &mdebug_type_complex
, /* btComplex */
1423 &mdebug_type_double_complex
, /* btDComplex */
1425 &mdebug_type_fixed_dec
, /* btFixedDec */
1426 &mdebug_type_float_dec
, /* btFloatDec */
1427 &mdebug_type_string
, /* btString */
1430 &mdebug_type_void
, /* btVoid */
1431 0, /* DEC C++: Pointer to member */
1432 0, /* DEC C++: Virtual function table */
1433 0, /* DEC C++: Class (Record) */
1434 &mdebug_type_long_64
, /* btLong64 */
1435 &mdebug_type_unsigned_long_64
, /* btULong64 */
1436 &mdebug_type_long_long_64
, /* btLongLong64 */
1437 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1438 &mdebug_type_adr_64
, /* btAdr64 */
1439 &mdebug_type_int_64
, /* btInt64 */
1440 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1444 struct type
*tp
= 0;
1445 enum type_code type_code
= TYPE_CODE_UNDEF
;
1447 /* Handle undefined types, they have indexNil. */
1448 if (aux_index
== indexNil
)
1449 return mdebug_type_int
;
1451 /* Handle corrupt aux indices. */
1452 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1454 complain (&index_complaint
, sym_name
);
1455 return mdebug_type_int
;
1459 /* Use aux as a type information record, map its basic type. */
1460 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1461 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1463 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1464 return mdebug_type_int
;
1468 tp
= *map_bt
[t
->bt
];
1473 /* Cannot use builtin types -- build our own */
1477 type_code
= TYPE_CODE_STRUCT
;
1480 type_code
= TYPE_CODE_UNION
;
1483 type_code
= TYPE_CODE_ENUM
;
1486 type_code
= TYPE_CODE_RANGE
;
1489 type_code
= TYPE_CODE_SET
;
1492 /* alpha cc -migrate uses this for typedefs. The true type will
1493 be obtained by crossreferencing below. */
1494 type_code
= TYPE_CODE_ERROR
;
1497 /* alpha cc uses this for typedefs. The true type will be
1498 obtained by crossreferencing below. */
1499 type_code
= TYPE_CODE_ERROR
;
1502 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1503 return mdebug_type_int
;
1507 /* Move on to next aux */
1512 int width
= AUX_GET_WIDTH (bigend
, ax
);
1514 /* Inhibit core dumps with some cfront generated objects that
1516 if (bs
== (int *)NULL
)
1518 /* Alpha cc -migrate encodes char and unsigned char types
1519 as short and unsigned short types with a field width of 8.
1520 Enum types also have a field width which we ignore for now. */
1521 if (t
->bt
== btShort
&& width
== 8)
1522 tp
= mdebug_type_char
;
1523 else if (t
->bt
== btUShort
&& width
== 8)
1524 tp
= mdebug_type_unsigned_char
;
1525 else if (t
->bt
== btEnum
)
1528 complain (&bad_fbitfield_complaint
, sym_name
);
1535 /* A btIndirect entry cross references to an aux entry containing
1537 if (t
->bt
== btIndirect
)
1544 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1546 if (rn
->rfd
== 0xfff)
1548 rf
= AUX_GET_ISYM (bigend
, ax
);
1556 complain (&bad_indirect_xref_complaint
, sym_name
);
1557 return mdebug_type_int
;
1559 xref_fh
= get_rfd (fd
, rf
);
1560 xref_fd
= xref_fh
- debug_info
->fdr
;
1561 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1562 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1565 /* All these types really point to some (common) MIPS type
1566 definition, and only the type-qualifiers fully identify
1567 them. We'll make the same effort at sharing. */
1568 if (t
->bt
== btStruct
||
1572 /* btSet (I think) implies that the name is a tag name, not a typedef
1573 name. This apparently is a MIPS extension for C sets. */
1578 /* Try to cross reference this type, build new type on failure. */
1579 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1580 if (tp
== (struct type
*) NULL
)
1581 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1583 /* DEC c89 produces cross references to qualified aggregate types,
1584 dereference them. */
1585 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1586 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1587 tp
= tp
->target_type
;
1589 /* Make sure that TYPE_CODE(tp) has an expected type code.
1590 Any type may be returned from cross_ref if file indirect entries
1592 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1593 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1594 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1596 complain (&unexpected_type_code_complaint
, sym_name
);
1601 /* Usually, TYPE_CODE(tp) is already type_code. The main
1602 exception is if we guessed wrong re struct/union/enum.
1603 But for struct vs. union a wrong guess is harmless, so
1604 don't complain(). */
1605 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1606 && type_code
!= TYPE_CODE_ENUM
)
1607 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1608 && type_code
== TYPE_CODE_ENUM
))
1610 complain (&bad_tag_guess_complaint
, sym_name
);
1613 if (TYPE_CODE (tp
) != type_code
)
1615 TYPE_CODE (tp
) = type_code
;
1618 /* Do not set the tag name if it is a compiler generated tag name
1619 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1620 if (name
[0] == '.' || name
[0] == '\0')
1621 TYPE_TAG_NAME (tp
) = NULL
;
1622 else if (TYPE_TAG_NAME (tp
) == NULL
1623 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1624 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1625 ¤t_objfile
->type_obstack
);
1629 /* All these types really point to some (common) MIPS type
1630 definition, and only the type-qualifiers fully identify
1631 them. We'll make the same effort at sharing.
1632 FIXME: We are not doing any guessing on range types. */
1633 if (t
->bt
== btRange
)
1637 /* Try to cross reference this type, build new type on failure. */
1638 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1639 if (tp
== (struct type
*) NULL
)
1640 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1642 /* Make sure that TYPE_CODE(tp) has an expected type code.
1643 Any type may be returned from cross_ref if file indirect entries
1645 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1647 complain (&unexpected_type_code_complaint
, sym_name
);
1651 /* Usually, TYPE_CODE(tp) is already type_code. The main
1652 exception is if we guessed wrong re struct/union/enum. */
1653 if (TYPE_CODE (tp
) != type_code
)
1655 complain (&bad_tag_guess_complaint
, sym_name
);
1656 TYPE_CODE (tp
) = type_code
;
1658 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1659 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1660 ¤t_objfile
->type_obstack
);
1663 if (t
->bt
== btTypedef
)
1667 /* Try to cross reference this type, it should succeed. */
1668 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1669 if (tp
== (struct type
*) NULL
)
1671 complain (&unable_to_cross_ref_complaint
, sym_name
);
1672 tp
= mdebug_type_int
;
1676 /* Deal with range types */
1677 if (t
->bt
== btRange
)
1679 TYPE_NFIELDS (tp
) = 2;
1680 TYPE_FIELDS (tp
) = ((struct field
*)
1681 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1682 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1683 ¤t_objfile
->type_obstack
);
1684 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1686 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1687 ¤t_objfile
->type_obstack
);
1688 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1692 /* Parse all the type qualifiers now. If there are more
1693 than 6 the game will continue in the next aux */
1697 #define PARSE_TQ(tq) \
1698 if (t->tq != tqNil) \
1699 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1711 /* mips cc 2.x and gcc never put out continued aux entries. */
1715 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1719 /* Complain for illegal continuations due to corrupt aux entries. */
1721 complain (&bad_continued_complaint
, sym_name
);
1726 /* Make up a complex type from a basic one. Type is passed by
1727 reference in TPP and side-effected as necessary. The type
1728 qualifier TQ says how to handle the aux symbols at AX for
1729 the symbol SX we are currently analyzing. BIGEND says whether
1730 aux symbols are big-endian or little-endian.
1731 Returns the number of aux symbols we parsed. */
1734 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1745 /* Used in array processing */
1756 t
= lookup_pointer_type (*tpp
);
1761 t
= lookup_function_type (*tpp
);
1768 /* Determine and record the domain type (type of index) */
1769 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1775 rf
= AUX_GET_ISYM (bigend
, ax
);
1778 fh
= get_rfd (fd
, rf
);
1780 indx
= parse_type (fd
, debug_info
->external_aux
+ fh
->iauxBase
,
1781 id
, (int *) NULL
, bigend
, sym_name
);
1783 /* The bounds type should be an integer type, but might be anything
1784 else due to corrupt aux entries. */
1785 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1787 complain (&array_index_type_complaint
, sym_name
);
1788 indx
= mdebug_type_int
;
1791 /* Get the bounds, and create the array type. */
1793 lower
= AUX_GET_DNLOW (bigend
, ax
);
1795 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1797 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1799 range
= create_range_type ((struct type
*) NULL
, indx
,
1802 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1804 /* We used to fill in the supplied array element bitsize
1805 here if the TYPE_LENGTH of the target type was zero.
1806 This happens for a `pointer to an array of anonymous structs',
1807 but in this case the array element bitsize is also zero,
1808 so nothing is gained.
1809 And we used to check the TYPE_LENGTH of the target type against
1810 the supplied array element bitsize.
1811 gcc causes a mismatch for `pointer to array of object',
1812 since the sdb directives it uses do not have a way of
1813 specifying the bitsize, but it does no harm (the
1814 TYPE_LENGTH should be correct) and we should be able to
1815 ignore the erroneous bitsize from the auxiliary entry safely.
1816 dbx seems to ignore it too. */
1818 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1820 if (TYPE_LENGTH (*tpp
) == 0)
1822 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1829 /* Volatile -- currently ignored */
1833 /* Const -- currently ignored */
1837 complain (&unknown_type_qual_complaint
, tq
);
1843 /* Parse a procedure descriptor record PR. Note that the procedure is
1844 parsed _after_ the local symbols, now we just insert the extra
1845 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1846 already been placed in the procedure's main block. Note also that
1847 images that have been partially stripped (ld -x) have been deprived
1848 of local symbols, and we have to cope with them here. FIRST_OFF is
1849 the offset of the first procedure for this FDR; we adjust the
1850 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1851 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1852 in question, or NULL to use top_stack->cur_block. */
1854 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, unsigned long,
1855 struct partial_symtab
*));
1858 parse_procedure (pr
, search_symtab
, first_off
, pst
)
1860 struct symtab
*search_symtab
;
1861 unsigned long first_off
;
1862 struct partial_symtab
*pst
;
1864 struct symbol
*s
, *i
;
1866 struct mips_extra_func_info
*e
;
1869 /* Simple rule to find files linked "-x" */
1870 if (cur_fdr
->rss
== -1)
1874 /* Static procedure at address pr->adr. Sigh. */
1875 /* FIXME-32x64. assuming pr->adr fits in long. */
1876 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1884 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1885 ((char *) debug_info
->external_ext
1887 * debug_swap
->external_ext_size
)),
1889 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1897 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1898 ((char *) debug_info
->external_sym
1899 + ((cur_fdr
->isymBase
+ pr
->isym
)
1900 * debug_swap
->external_sym_size
)),
1902 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1905 if (search_symtab
!= NULL
)
1908 /* This loses both in the case mentioned (want a static, find a global),
1909 but also if we are looking up a non-mangled name which happens to
1910 match the name of a mangled function. */
1911 /* We have to save the cur_fdr across the call to lookup_symbol.
1912 If the pdr is for a static function and if a global function with
1913 the same name exists, lookup_symbol will eventually read in the symtab
1914 for the global function and clobber cur_fdr. */
1915 FDR
*save_cur_fdr
= cur_fdr
;
1916 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1917 cur_fdr
= save_cur_fdr
;
1921 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1927 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1928 VAR_NAMESPACE
, LOC_BLOCK
);
1932 b
= SYMBOL_BLOCK_VALUE (s
);
1936 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1940 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1941 s
= new_symbol (sh_name
);
1942 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1943 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1944 /* Donno its type, hope int is ok */
1945 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1946 add_symbol (s
, top_stack
->cur_block
);
1947 /* Wont have symbols for this one */
1949 SYMBOL_BLOCK_VALUE (s
) = b
;
1950 BLOCK_FUNCTION (b
) = s
;
1951 BLOCK_START (b
) = pr
->adr
;
1952 /* BOUND used to be the end of procedure's text, but the
1953 argument is no longer passed in. */
1954 BLOCK_END (b
) = bound
;
1955 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1956 add_block (b
, top_stack
->cur_st
);
1960 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1964 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1966 e
->pdr
.isym
= (long) s
;
1967 e
->pdr
.adr
+= pst
->textlow
- first_off
;
1969 /* Correct incorrect setjmp procedure descriptor from the library
1970 to make backtrace through setjmp work. */
1971 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1973 complain (&bad_setjmp_pdr_complaint
, 0);
1974 e
->pdr
.pcreg
= RA_REGNUM
;
1975 e
->pdr
.regmask
= 0x80000000;
1976 e
->pdr
.regoffset
= -4;
1980 /* It would be reasonable that functions that have been compiled
1981 without debugging info have a btNil type for their return value,
1982 and functions that are void and are compiled with debugging info
1984 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1985 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1987 The glevel field in cur_fdr could be used to determine the presence
1988 of debugging info, but GCC doesn't always pass the -g switch settings
1989 to the assembler and GAS doesn't set the glevel field from the -g switch
1991 To work around these problems, the return value type of a TYPE_CODE_VOID
1992 function is adjusted accordingly if no debugging info was found in the
1993 compilation unit. */
1995 if (processing_gcc_compilation
== 0
1996 && found_ecoff_debugging_info
== 0
1997 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
1998 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2001 /* Relocate the extra function info pointed to by the symbol table. */
2004 ecoff_relocate_efi (sym
, delta
)
2008 struct mips_extra_func_info
*e
;
2010 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2012 e
->pdr
.adr
+= delta
;
2015 /* Parse the external symbol ES. Just call parse_symbol() after
2016 making sure we know where the aux are for it.
2017 BIGEND says whether aux entries are big-endian or little-endian.
2019 This routine clobbers top_stack->cur_block and ->cur_st. */
2021 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
2024 parse_external (es
, bigend
, section_offsets
)
2027 struct section_offsets
*section_offsets
;
2031 if (es
->ifd
!= ifdNil
)
2034 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2035 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2039 cur_fdr
= debug_info
->fdr
;
2043 /* Reading .o files */
2044 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scNil
)
2047 switch (es
->asym
.st
)
2050 /* These are generated for static symbols in .o files,
2071 /* FIXME: Turn this into a complaint? */
2073 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2074 what
, debug_info
->ssext
+ es
->asym
.iss
,
2075 fdr_name (cur_fdr
));
2079 switch (es
->asym
.st
)
2083 /* There is no need to parse the external procedure symbols.
2084 If they are from objects compiled without -g, their index will
2085 be indexNil, and the symbol definition from the minimal symbol
2086 is preferrable (yielding a function returning int instead of int).
2087 If the index points to a local procedure symbol, the local
2088 symbol already provides the correct type.
2089 Note that the index of the external procedure symbol points
2090 to the local procedure symbol in the local symbol table, and
2091 _not_ to the auxiliary symbol info. */
2095 /* Global common symbols are resolved by the runtime loader,
2097 if (es
->asym
.sc
== scCommon
|| es
->asym
.sc
== scSCommon
)
2100 /* Note that the case of a symbol with indexNil must be handled
2101 anyways by parse_symbol(). */
2102 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
2109 /* Parse the line number info for file descriptor FH into
2110 GDB's linetable LT. MIPS' encoding requires a little bit
2111 of magic to get things out. Note also that MIPS' line
2112 numbers can go back and forth, apparently we can live
2113 with that and do not need to reorder our linetables */
2115 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
2116 struct partial_symtab
*));
2119 parse_lines (fh
, pr
, lt
, maxlines
, pst
)
2122 struct linetable
*lt
;
2124 struct partial_symtab
*pst
;
2126 unsigned char *base
;
2128 int delta
, count
, lineno
= 0;
2129 unsigned long first_off
= pr
->adr
;
2131 if (fh
->cbLine
== 0)
2134 /* Scan by procedure descriptors */
2136 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2140 unsigned char *halt
;
2142 /* No code for this one */
2143 if (pr
->iline
== ilineNil
||
2144 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2147 /* Determine start and end address of compressed line bytes for
2149 base
= debug_info
->line
+ fh
->cbLineOffset
;
2150 if (j
!= (fh
->cpd
- 1))
2151 halt
= base
+ pr
[1].cbLineOffset
;
2153 halt
= base
+ fh
->cbLine
;
2154 base
+= pr
->cbLineOffset
;
2156 adr
= pst
->textlow
+ pr
->adr
- first_off
;
2158 l
= adr
>> 2; /* in words */
2159 for (lineno
= pr
->lnLow
; base
< halt
; )
2161 count
= *base
& 0x0f;
2162 delta
= *base
++ >> 4;
2167 delta
= (base
[0] << 8) | base
[1];
2168 if (delta
>= 0x8000)
2172 lineno
+= delta
; /* first delta is 0 */
2174 /* Complain if the line table overflows. Could happen
2175 with corrupt binaries. */
2176 if (lt
->nitems
>= maxlines
)
2178 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2181 k
= add_line (lt
, lineno
, l
, k
);
2187 /* Master parsing procedure for first-pass reading of file symbols
2188 into a partial_symtab. */
2191 parse_partial_symbols (objfile
, section_offsets
)
2192 struct objfile
*objfile
;
2193 struct section_offsets
*section_offsets
;
2195 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2196 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2197 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2198 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2199 = debug_swap
->swap_ext_in
;
2200 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2201 = debug_swap
->swap_sym_in
;
2202 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2203 = debug_swap
->swap_rfd_in
;
2205 HDRR
*hdr
= &debug_info
->symbolic_header
;
2206 /* Running pointers */
2211 register EXTR
*ext_in
;
2214 struct partial_symtab
*pst
;
2216 int past_first_source_file
= 0;
2218 /* List of current psymtab's include files */
2219 char **psymtab_include_list
;
2220 int includes_allocated
;
2223 struct pst_map
*fdr_to_pst
;
2224 /* Index within current psymtab dependency list */
2225 struct partial_symtab
**dependency_list
;
2226 int dependencies_used
, dependencies_allocated
;
2227 struct cleanup
*old_chain
;
2229 enum language prev_language
;
2230 asection
*text_sect
;
2231 int relocatable
= 0;
2233 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2234 the shared libraries are prelinked at a high memory address.
2235 We have to adjust the start address of the object file for this case,
2236 by setting it to the start address of the first procedure in the file.
2237 But we should do no adjustments if we are debugging a .o file, where
2238 the text section (and fh->adr) really starts at zero. */
2239 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2240 if (text_sect
!= NULL
2241 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2244 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2245 sizeof (EXTR
) * hdr
->iextMax
);
2247 includes_allocated
= 30;
2249 psymtab_include_list
= (char **) alloca (includes_allocated
*
2251 next_symbol_text_func
= mdebug_next_symbol_text
;
2253 dependencies_allocated
= 30;
2254 dependencies_used
= 0;
2256 (struct partial_symtab
**) alloca (dependencies_allocated
*
2257 sizeof (struct partial_symtab
*));
2259 last_source_file
= NULL
;
2264 * Only parse the Local and External symbols, and the Relative FDR.
2265 * Fixup enough of the loader symtab to be able to use it.
2266 * Allocate space only for the file's portions we need to
2271 max_glevel
= MIN_GLEVEL
;
2273 /* Allocate the map FDR -> PST.
2274 Minor hack: -O3 images might claim some global data belongs
2275 to FDR -1. We`ll go along with that */
2276 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2277 old_chain
= make_cleanup (free
, fdr_to_pst
);
2280 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2281 fdr_to_pst
[-1].pst
= pst
;
2285 /* Allocate the global pending list. */
2287 ((struct mdebug_pending
**)
2288 obstack_alloc (&objfile
->psymbol_obstack
,
2289 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2290 memset ((PTR
) pending_list
, 0,
2291 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2293 /* Pass 0 over external syms: swap them in. */
2294 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2295 make_cleanup (free
, ext_block
);
2297 ext_out
= (char *) debug_info
->external_ext
;
2298 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2300 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2301 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2303 /* Pass 1 over external syms: Presize and partition the list */
2305 ext_in_end
= ext_in
+ hdr
->iextMax
;
2306 for (; ext_in
< ext_in_end
; ext_in
++)
2308 /* See calls to complain below. */
2309 if (ext_in
->ifd
>= -1
2310 && ext_in
->ifd
< hdr
->ifdMax
2311 && ext_in
->asym
.iss
>= 0
2312 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2313 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2316 /* Pass 1.5 over files: partition out global symbol space */
2318 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2320 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2321 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2322 fdr_to_pst
[f_idx
].n_globals
= 0;
2325 /* Pass 2 over external syms: fill in external symbols */
2327 ext_in_end
= ext_in
+ hdr
->iextMax
;
2328 for (; ext_in
< ext_in_end
; ext_in
++)
2330 enum minimal_symbol_type ms_type
= mst_text
;
2331 CORE_ADDR svalue
= ext_in
->asym
.value
;
2333 /* The Irix 5 native tools seem to sometimes generate bogus
2334 external symbols. */
2335 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2337 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2340 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2342 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2347 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2348 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2350 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scNil
)
2353 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2354 switch (ext_in
->asym
.st
)
2357 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2360 ms_type
= mst_file_text
;
2361 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2364 if (ext_in
->asym
.sc
== scCommon
|| ext_in
->asym
.sc
== scSCommon
)
2366 /* The value of a common symbol is its size, not its address.
2370 else if (ext_in
->asym
.sc
== scData
2371 || ext_in
->asym
.sc
== scSData
2372 || ext_in
->asym
.sc
== scRData
2373 || ext_in
->asym
.sc
== scPData
2374 || ext_in
->asym
.sc
== scXData
)
2377 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2382 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2386 if (ext_in
->asym
.sc
== scAbs
)
2388 else if (ext_in
->asym
.sc
== scText
2389 || ext_in
->asym
.sc
== scInit
2390 || ext_in
->asym
.sc
== scFini
)
2392 ms_type
= mst_file_text
;
2393 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2395 else if (ext_in
->asym
.sc
== scData
2396 || ext_in
->asym
.sc
== scSData
2397 || ext_in
->asym
.sc
== scRData
2398 || ext_in
->asym
.sc
== scPData
2399 || ext_in
->asym
.sc
== scXData
)
2401 ms_type
= mst_file_data
;
2402 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2406 ms_type
= mst_file_bss
;
2407 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2411 /* The alpha has the section start addresses in stLocal symbols
2412 whose name starts with a `.'. Skip those but complain for all
2413 other stLocal symbols. */
2418 ms_type
= mst_unknown
;
2419 complain (&unknown_ext_complaint
, name
);
2421 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2424 /* Pass 3 over files, over local syms: fill in static symbols */
2425 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2427 struct partial_symtab
*save_pst
;
2431 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2435 fdr_to_pst
[f_idx
].pst
= NULL
;
2439 /* Determine the start address for this object file from the
2440 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2444 if (relocatable
|| textlow
!= 0)
2445 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2449 pst
= start_psymtab_common (objfile
, section_offsets
,
2452 objfile
->global_psymbols
.next
,
2453 objfile
->static_psymbols
.next
);
2454 pst
->read_symtab_private
= ((char *)
2455 obstack_alloc (&objfile
->psymbol_obstack
,
2456 sizeof (struct symloc
)));
2457 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2460 FDR_IDX (pst
) = f_idx
;
2461 CUR_BFD (pst
) = cur_bfd
;
2462 DEBUG_SWAP (pst
) = debug_swap
;
2463 DEBUG_INFO (pst
) = debug_info
;
2464 PENDING_LIST (pst
) = pending_list
;
2466 /* The way to turn this into a symtab is to call... */
2467 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2469 /* Set up language for the pst.
2470 The language from the FDR is used if it is unambigious (e.g. cfront
2471 with native cc and g++ will set the language to C).
2472 Otherwise we have to deduce the language from the filename.
2473 Native ecoff has every header file in a separate FDR, so
2474 deduce_language_from_filename will return language_unknown for
2475 a header file, which is not what we want.
2476 But the FDRs for the header files are after the FDR for the source
2477 file, so we can assign the language of the source file to the
2478 following header files. Then we save the language in the private
2479 pst data so that we can reuse it when building symtabs. */
2480 prev_language
= psymtab_language
;
2484 case langCplusplusV2
:
2485 psymtab_language
= language_cplus
;
2488 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2491 if (psymtab_language
== language_unknown
)
2492 psymtab_language
= prev_language
;
2493 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2495 pst
->texthigh
= pst
->textlow
;
2497 /* For stabs-in-ecoff files, the second symbol must be @stab.
2498 This symbol is emitted by mips-tfile to signal that the
2499 current object file uses encapsulated stabs instead of mips
2500 ecoff for local symbols. (It is the second symbol because
2501 the first symbol is the stFile used to signal the start of a
2503 processing_gcc_compilation
= 0;
2506 (*swap_sym_in
) (cur_bfd
,
2507 ((char *) debug_info
->external_sym
2508 + (fh
->isymBase
+ 1) * external_sym_size
),
2510 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2511 processing_gcc_compilation
= 2;
2514 if (processing_gcc_compilation
!= 0)
2516 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2521 (*swap_sym_in
) (cur_bfd
,
2522 (((char *) debug_info
->external_sym
)
2523 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2525 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2526 if (!ECOFF_IS_STAB (&sh
))
2528 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2533 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2534 if (sh
.st
== stStaticProc
)
2536 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2537 prim_record_minimal_symbol_and_info (namestring
,
2544 procaddr
= sh
.value
;
2546 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2547 (debug_info
->external_aux
2550 (*swap_sym_in
) (cur_bfd
,
2551 ((char *) debug_info
->external_sym
2552 + ((fh
->isymBase
+ isym
- 1)
2553 * external_sym_size
)),
2557 long high
= procaddr
+ sh
.value
;
2559 /* Kludge for Irix 5.2 zero fh->adr. */
2561 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2562 pst
->textlow
= procaddr
;
2563 if (high
> pst
->texthigh
)
2564 pst
->texthigh
= high
;
2567 else if (sh
.st
== stStatic
)
2581 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2582 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2583 prim_record_minimal_symbol_and_info (namestring
,
2592 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2593 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2594 prim_record_minimal_symbol_and_info (namestring
,
2605 #define SET_NAMESTRING() \
2606 namestring = debug_info->ss + fh->issBase + sh.iss
2607 #define CUR_SYMBOL_TYPE type_code
2608 #define CUR_SYMBOL_VALUE sh.value
2609 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2611 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2612 #define HANDLE_RBRAC(val) \
2613 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2614 #include "partial-stab.h"
2619 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2622 enum address_class
class;
2624 (*swap_sym_in
) (cur_bfd
,
2625 ((char *) debug_info
->external_sym
2626 + ((fh
->isymBase
+ cur_sdx
)
2627 * external_sym_size
)),
2630 if (ECOFF_IS_STAB (&sh
))
2636 /* Non absolute static symbols go into the minimal table. */
2637 if (sh
.sc
== scUndefined
|| sh
.sc
== scNil
2638 || (sh
.index
== indexNil
2639 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2641 /* FIXME, premature? */
2646 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2651 /* The value of a stEnd symbol is the displacement from the
2652 corresponding start symbol value, do not relocate it. */
2654 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2661 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2665 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2676 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2677 mst_file_text
, NULL
,
2678 SECT_OFF_TEXT
, objfile
);
2683 /* Usually there is a local and a global stProc symbol
2684 for a function. This means that the function name
2685 has already been entered into the mimimal symbol table
2686 while processing the global symbols in pass 2 above.
2687 One notable exception is the PROGRAM name from
2688 f77 compiled executables, it is only put out as
2689 local stProc symbol, and a global MAIN__ stProc symbol
2690 points to it. It doesn't matter though, as gdb is
2691 still able to find the PROGRAM name via the partial
2692 symbol table, and the MAIN__ symbol via the minimal
2694 if (sh
.st
== stProc
)
2695 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2696 VAR_NAMESPACE
, LOC_BLOCK
,
2697 objfile
->global_psymbols
,
2698 sh
.value
, psymtab_language
, objfile
);
2700 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2701 VAR_NAMESPACE
, LOC_BLOCK
,
2702 objfile
->static_psymbols
,
2703 sh
.value
, psymtab_language
, objfile
);
2705 /* Skip over procedure to next one. */
2706 if (sh
.index
>= hdr
->iauxMax
)
2708 /* Should not happen, but does when cross-compiling
2709 with the MIPS compiler. FIXME -- pull later. */
2710 complain (&index_complaint
, name
);
2711 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2714 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2715 (debug_info
->external_aux
2718 procaddr
= sh
.value
;
2720 if (new_sdx
<= cur_sdx
)
2722 /* This should not happen either... FIXME. */
2723 complain (&aux_index_complaint
, name
);
2724 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2728 (*swap_sym_in
) (cur_bfd
,
2729 ((char *) debug_info
->external_sym
2730 + ((fh
->isymBase
+ cur_sdx
- 1)
2731 * external_sym_size
)),
2736 /* Kludge for Irix 5.2 zero fh->adr. */
2738 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2739 pst
->textlow
= procaddr
;
2741 high
= procaddr
+ sh
.value
;
2742 if (high
> pst
->texthigh
)
2743 pst
->texthigh
= high
;
2746 case stStatic
: /* Variable */
2751 || sh
.sc
== scXData
)
2752 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2753 mst_file_data
, NULL
,
2757 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2764 case stIndirect
:/* Irix5 forward declaration */
2765 /* Skip forward declarations from Irix5 cc */
2768 case stTypedef
:/* Typedef */
2769 /* Skip typedefs for forward declarations and opaque
2770 structs from alpha and mips cc. */
2771 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2773 class = LOC_TYPEDEF
;
2776 case stConstant
: /* Constant decl */
2783 case stBlock
: /* { }, str, un, enum*/
2784 /* Do not create a partial symbol for cc unnamed aggregates
2785 and gcc empty aggregates. */
2786 if ((sh
.sc
== scInfo
2787 || sh
.sc
== scCommon
|| sh
.sc
== scSCommon
)
2789 && sh
.index
!= cur_sdx
+ 2)
2791 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2792 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2793 objfile
->static_psymbols
,
2795 psymtab_language
, objfile
);
2797 handle_psymbol_enumerators (objfile
, fh
, sh
.st
);
2799 /* Skip over the block */
2801 if (new_sdx
<= cur_sdx
)
2803 /* This happens with the Ultrix kernel. */
2804 complain (&block_index_complaint
, name
);
2805 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2810 case stFile
: /* File headers */
2811 case stLabel
: /* Labels */
2812 case stEnd
: /* Ends of files */
2815 case stLocal
: /* Local variables */
2816 /* Normally these are skipped because we skip over
2817 all blocks we see. However, these can occur
2818 as visible symbols in a .h file that contains code. */
2822 /* Both complaints are valid: one gives symbol name,
2823 the other the offending symbol type. */
2824 complain (&unknown_sym_complaint
, name
);
2825 complain (&unknown_st_complaint
, sh
.st
);
2829 /* Use this gdb symbol */
2830 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2831 VAR_NAMESPACE
, class,
2832 objfile
->static_psymbols
, sh
.value
,
2833 psymtab_language
, objfile
);
2835 cur_sdx
++; /* Go to next file symbol */
2838 /* Now do enter the external symbols. */
2839 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2840 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2841 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2842 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2843 for (; --cur_sdx
>= 0; ext_ptr
++)
2845 enum address_class
class;
2850 if (ext_ptr
->ifd
!= f_idx
)
2852 psh
= &ext_ptr
->asym
;
2854 /* Do not add undefined symbols to the partial symbol table. */
2855 if (psh
->sc
== scUndefined
|| psh
->sc
== scNil
)
2858 svalue
= psh
->value
;
2862 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2869 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2873 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2880 /* These are generated for static symbols in .o files,
2885 /* External procedure symbols have been entered
2886 into the minimal symbol table in pass 2 above.
2887 Ignore them, as parse_external will ignore them too. */
2893 complain (&unknown_ext_complaint
,
2894 debug_info
->ssext
+ psh
->iss
);
2895 /* Fall through, pretend it's global. */
2897 /* Global common symbols are resolved by the runtime loader,
2899 if (psh
->sc
== scCommon
|| psh
->sc
== scSCommon
)
2905 name
= debug_info
->ssext
+ psh
->iss
;
2906 ADD_PSYMBOL_ADDR_TO_LIST (name
, strlen (name
),
2907 VAR_NAMESPACE
, class,
2908 objfile
->global_psymbols
,
2910 psymtab_language
, objfile
);
2914 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2915 empty and put on the free list. */
2916 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2917 psymtab_include_list
, includes_used
,
2918 -1, save_pst
->texthigh
,
2919 dependency_list
, dependencies_used
);
2921 dependencies_used
= 0;
2923 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2924 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2926 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2927 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2930 /* The objfile has its functions reordered if this partial symbol
2931 table overlaps any other partial symbol table.
2932 We cannot assume a reordered objfile if a partial symbol table
2933 is contained within another partial symbol table, as partial symbol
2934 tables for include files with executable code are contained
2935 within the partial symbol table for the including source file,
2936 and we do not want to flag the objfile reordered for these cases.
2938 This strategy works well for Irix-5.2 shared libraries, but we
2939 might have to use a more elaborate (and slower) algorithm for
2941 save_pst
= fdr_to_pst
[f_idx
].pst
;
2942 if (save_pst
!= NULL
2943 && save_pst
->textlow
!= 0
2944 && !(objfile
->flags
& OBJF_REORDERED
))
2946 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
2949 && save_pst
->textlow
>= pst
->textlow
2950 && save_pst
->textlow
< pst
->texthigh
2951 && save_pst
->texthigh
> pst
->texthigh
)
2953 objfile
->flags
|= OBJF_REORDERED
;
2960 /* Now scan the FDRs for dependencies */
2961 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2963 fh
= f_idx
+ debug_info
->fdr
;
2964 pst
= fdr_to_pst
[f_idx
].pst
;
2966 if (pst
== (struct partial_symtab
*)NULL
)
2969 /* This should catch stabs-in-ecoff. */
2973 /* Skip the first file indirect entry as it is a self dependency
2974 for source files or a reverse .h -> .c dependency for header files. */
2975 pst
->number_of_dependencies
= 0;
2977 ((struct partial_symtab
**)
2978 obstack_alloc (&objfile
->psymbol_obstack
,
2980 * sizeof (struct partial_symtab
*))));
2981 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
2985 (*swap_rfd_in
) (cur_bfd
,
2986 ((char *) debug_info
->external_rfd
2987 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
2989 if (rh
< 0 || rh
>= hdr
->ifdMax
)
2991 complain (&bad_file_number_complaint
, rh
);
2995 /* Skip self dependencies of header files. */
2999 /* Do not add to dependeny list if psymtab was empty. */
3000 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
3002 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3006 /* Remove the dummy psymtab created for -O3 images above, if it is
3007 still empty, to enable the detection of stripped executables. */
3008 if (objfile
->psymtabs
->next
== NULL
3009 && objfile
->psymtabs
->number_of_dependencies
== 0
3010 && objfile
->psymtabs
->n_global_syms
== 0
3011 && objfile
->psymtabs
->n_static_syms
== 0)
3012 objfile
->psymtabs
= NULL
;
3013 do_cleanups (old_chain
);
3016 /* If the current psymbol has an enumerated type, we need to add
3017 all the the enum constants to the partial symbol table. */
3020 handle_psymbol_enumerators (objfile
, fh
, stype
)
3021 struct objfile
*objfile
;
3025 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3026 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
3027 = debug_swap
->swap_sym_in
;
3028 char *ext_sym
= ((char *) debug_info
->external_sym
3029 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3039 /* It is an enumerated type if the next symbol entry is a stMember
3040 and its auxiliary index is indexNil or its auxiliary entry
3041 is a plain btNil or btVoid. */
3042 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3043 if (sh
.st
!= stMember
)
3046 if (sh
.index
== indexNil
)
3048 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3049 &(debug_info
->external_aux
3050 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3052 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
3064 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3065 if (sh
.st
!= stMember
)
3067 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3069 /* Note that the value doesn't matter for enum constants
3070 in psymtabs, just in symtabs. */
3071 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
3072 VAR_NAMESPACE
, LOC_CONST
,
3073 objfile
->static_psymbols
, 0,
3074 psymtab_language
, objfile
);
3075 ext_sym
+= external_sym_size
;
3080 mdebug_next_symbol_text ()
3085 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3086 ((char *) debug_info
->external_sym
3087 + ((cur_fdr
->isymBase
+ cur_sdx
)
3088 * debug_swap
->external_sym_size
)),
3090 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3093 /* Ancillary function to psymtab_to_symtab(). Does all the work
3094 for turning the partial symtab PST into a symtab, recurring
3095 first on all dependent psymtabs. The argument FILENAME is
3096 only passed so we can see in debug stack traces what file
3099 This function has a split personality, based on whether the
3100 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3101 The flow of control and even the memory allocation differs. FIXME. */
3104 psymtab_to_symtab_1 (pst
, filename
)
3105 struct partial_symtab
*pst
;
3108 bfd_size_type external_sym_size
;
3109 bfd_size_type external_pdr_size
;
3110 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
3111 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
3115 struct linetable
*lines
;
3121 /* Read in all partial symbtabs on which this one is dependent.
3122 NOTE that we do have circular dependencies, sigh. We solved
3123 that by setting pst->readin before this point. */
3125 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3126 if (!pst
->dependencies
[i
]->readin
)
3128 /* Inform about additional files to be read in. */
3131 fputs_filtered (" ", gdb_stdout
);
3133 fputs_filtered ("and ", gdb_stdout
);
3135 printf_filtered ("%s...",
3136 pst
->dependencies
[i
]->filename
);
3137 wrap_here (""); /* Flush output */
3138 gdb_flush (gdb_stdout
);
3140 /* We only pass the filename for debug purposes */
3141 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3142 pst
->dependencies
[i
]->filename
);
3145 /* Do nothing if this is a dummy psymtab. */
3147 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3148 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3151 /* Now read the symbols for this symtab */
3153 cur_bfd
= CUR_BFD (pst
);
3154 debug_swap
= DEBUG_SWAP (pst
);
3155 debug_info
= DEBUG_INFO (pst
);
3156 pending_list
= PENDING_LIST (pst
);
3157 external_sym_size
= debug_swap
->external_sym_size
;
3158 external_pdr_size
= debug_swap
->external_pdr_size
;
3159 swap_sym_in
= debug_swap
->swap_sym_in
;
3160 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3161 current_objfile
= pst
->objfile
;
3162 cur_fd
= FDR_IDX (pst
);
3163 fh
= ((cur_fd
== -1)
3165 : debug_info
->fdr
+ cur_fd
);
3168 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3169 processing_gcc_compilation
= 0;
3170 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3174 (*swap_sym_in
) (cur_bfd
,
3175 ((char *) debug_info
->external_sym
3176 + (fh
->isymBase
+ 1) * external_sym_size
),
3178 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3181 /* We indicate that this is a GCC compilation so that certain
3182 features will be enabled in stabsread/dbxread. */
3183 processing_gcc_compilation
= 2;
3187 if (processing_gcc_compilation
!= 0)
3192 unsigned long first_off
= 0;
3194 /* This symbol table contains stabs-in-ecoff entries. */
3196 /* Parse local symbols first */
3198 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3200 current_objfile
= NULL
;
3203 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3209 (*swap_sym_in
) (cur_bfd
,
3210 (((char *) debug_info
->external_sym
)
3211 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3213 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3215 if (ECOFF_IS_STAB (&sh
))
3217 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3219 /* We should never get non N_STAB symbols here, but they
3220 should be harmless, so keep process_one_symbol from
3221 complaining about them. */
3222 if (type_code
& N_STAB
)
3224 process_one_symbol (type_code
, 0, valu
, name
,
3225 pst
->section_offsets
, pst
->objfile
);
3227 if (type_code
== N_FUN
)
3229 /* Make up special symbol to contain
3230 procedure specific info */
3231 struct mips_extra_func_info
*e
=
3232 ((struct mips_extra_func_info
*)
3233 obstack_alloc (¤t_objfile
->symbol_obstack
,
3234 sizeof (struct mips_extra_func_info
)));
3235 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3237 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3238 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3239 SYMBOL_CLASS (s
) = LOC_CONST
;
3240 SYMBOL_TYPE (s
) = mdebug_type_void
;
3241 SYMBOL_VALUE (s
) = (long) e
;
3242 e
->pdr
.framereg
= -1;
3243 add_symbol_to_list (s
, &local_symbols
);
3246 else if (sh
.st
== stLabel
)
3248 if (sh
.index
== indexNil
)
3250 /* This is what the gcc2_compiled and __gnu_compiled_*
3251 show up as. So don't complain. */
3256 /* Handle encoded stab line number. */
3257 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT
);
3258 record_line (current_subfile
, sh
.index
, valu
);
3261 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3262 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3263 /* These are generated by gcc-2.x, do not complain */
3266 complain (&stab_unknown_complaint
, name
);
3268 st
= end_symtab (pst
->texthigh
, 0, 0, pst
->objfile
, SECT_OFF_TEXT
);
3271 /* Sort the symbol table now, we are done adding symbols to it.
3272 We must do this before parse_procedure calls lookup_symbol. */
3273 sort_symtab_syms (st
);
3275 /* There used to be a call to sort_blocks here, but this should not
3276 be necessary for stabs symtabs. And as sort_blocks modifies the
3277 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3278 it did the wrong thing if the first procedure in a file was
3279 generated via asm statements. */
3281 /* Fill in procedure info next. */
3283 pdr_ptr
= ((char *) debug_info
->external_pdr
3284 + fh
->ipdFirst
* external_pdr_size
);
3285 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3286 for (; pdr_ptr
< pdr_end
; pdr_ptr
+= external_pdr_size
)
3290 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, &pr
);
3296 parse_procedure (&pr
, st
, first_off
, pst
);
3301 /* This symbol table contains ordinary ecoff entries. */
3307 /* How many symbols will we need */
3308 /* FIXME, this does not count enum values. */
3309 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3313 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3317 f_max
+= fh
->csym
+ fh
->cpd
;
3318 maxlines
= 2 * fh
->cline
;
3319 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3321 /* The proper language was already determined when building
3322 the psymtab, use it. */
3323 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3326 psymtab_language
= st
->language
;
3328 lines
= LINETABLE (st
);
3330 /* Get a new lexical context */
3332 push_parse_stack ();
3333 top_stack
->cur_st
= st
;
3334 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3336 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3337 BLOCK_END (top_stack
->cur_block
) = 0;
3338 top_stack
->blocktype
= stFile
;
3339 top_stack
->maxsyms
= 2 * f_max
;
3340 top_stack
->cur_type
= 0;
3341 top_stack
->procadr
= 0;
3342 top_stack
->numargs
= 0;
3343 found_ecoff_debugging_info
= 0;
3350 /* Parse local symbols first */
3351 sym_ptr
= ((char *) debug_info
->external_sym
3352 + fh
->isymBase
* external_sym_size
);
3353 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3354 while (sym_ptr
< sym_end
)
3359 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3360 c
= parse_symbol (&sh
,
3361 debug_info
->external_aux
+ fh
->iauxBase
,
3362 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3363 sym_ptr
+= c
* external_sym_size
;
3366 /* Linenumbers. At the end, check if we can save memory.
3367 parse_lines has to look ahead an arbitrary number of PDR
3368 structures, so we swap them all first. */
3372 struct cleanup
*old_chain
;
3378 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3380 old_chain
= make_cleanup (free
, pr_block
);
3382 pdr_ptr
= ((char *) debug_info
->external_pdr
3383 + fh
->ipdFirst
* external_pdr_size
);
3384 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3388 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3389 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3391 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
);
3392 if (lines
->nitems
< fh
->cline
)
3393 lines
= shrink_linetable (lines
);
3395 /* Fill in procedure info next. */
3397 pdr_in_end
= pdr_in
+ fh
->cpd
;
3398 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3399 parse_procedure (pdr_in
, 0, pr_block
->adr
, pst
);
3401 do_cleanups (old_chain
);
3405 LINETABLE (st
) = lines
;
3407 /* .. and our share of externals.
3408 XXX use the global list to speed up things here. how?
3409 FIXME, Maybe quit once we have found the right number of ext's? */
3410 top_stack
->cur_st
= st
;
3411 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3413 top_stack
->blocktype
= stFile
;
3415 = (debug_info
->symbolic_header
.isymMax
3416 + debug_info
->symbolic_header
.ipdMax
3417 + debug_info
->symbolic_header
.iextMax
);
3419 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3420 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3421 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3423 /* If there are undefined symbols, tell the user.
3424 The alpha has an undefined symbol for every symbol that is
3425 from a shared library, so tell the user only if verbose is on. */
3426 if (info_verbose
&& n_undef_symbols
)
3428 printf_filtered ("File %s contains %d unresolved references:",
3429 st
->filename
, n_undef_symbols
);
3430 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3431 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3432 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3439 /* Sort the symbol table now, we are done adding symbols to it.*/
3440 sort_symtab_syms (st
);
3445 /* Now link the psymtab and the symtab. */
3448 current_objfile
= NULL
;
3451 /* Ancillary parsing procedures. */
3453 /* Return 1 if the symbol pointed to by SH has a cross reference
3454 to an opaque aggregate type, else 0. */
3457 has_opaque_xref (fh
, sh
)
3466 if (sh
->index
== indexNil
)
3469 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3470 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3471 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3475 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3476 if (rn
->rfd
== 0xfff)
3477 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3485 /* Lookup the type at relative index RN. Return it in TPP
3486 if found and in any event come up with its name PNAME.
3487 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3488 Return value says how many aux symbols we ate. */
3491 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3495 enum type_code type_code
; /* Use to alloc new type if none is found. */
3507 struct mdebug_pending
*pend
;
3509 *tpp
= (struct type
*)NULL
;
3511 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3513 /* Escape index means 'the next one' */
3514 if (rn
->rfd
== 0xfff)
3517 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3524 /* mips cc uses a rf of -1 for opaque struct definitions.
3525 Set TYPE_FLAG_STUB for these types so that check_stub_type will
3526 resolve them if the struct gets defined in another compilation unit. */
3529 *pname
= "<undefined>";
3530 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3531 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3535 /* mips cc uses an escaped rn->index of 0 for struct return types
3536 of procedures that were compiled without -g. These will always remain
3538 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3540 *pname
= "<undefined>";
3544 /* Find the relative file descriptor and the symbol in it. */
3545 fh
= get_rfd (fd
, rf
);
3546 xref_fd
= fh
- debug_info
->fdr
;
3548 if (rn
->index
>= fh
->csym
)
3550 /* File indirect entry is corrupt. */
3551 *pname
= "<illegal>";
3552 complain (&bad_rfd_entry_complaint
,
3553 sym_name
, xref_fd
, rn
->index
);
3557 /* If we have processed this symbol then we left a forwarding
3558 pointer to the type in the pending list. If not, we`ll put
3559 it in a list of pending types, to be processed later when
3560 the file will be. In any event, we collect the name for the
3563 esh
= ((char *) debug_info
->external_sym
3564 + ((fh
->isymBase
+ rn
->index
)
3565 * debug_swap
->external_sym_size
));
3566 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3568 /* Make sure that this type of cross reference can be handled. */
3569 if ((sh
.sc
!= scInfo
3570 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3571 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3572 && sh
.st
!= stEnum
))
3573 && (sh
.st
!= stBlock
|| (sh
.sc
!= scCommon
&& sh
.sc
!= scSCommon
)))
3575 /* File indirect entry is corrupt. */
3576 *pname
= "<illegal>";
3577 complain (&bad_rfd_entry_complaint
,
3578 sym_name
, xref_fd
, rn
->index
);
3582 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3584 pend
= is_pending_symbol (fh
, esh
);
3589 /* We have not yet seen this type. */
3591 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3595 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3597 a) forward declarations of structs/unions/enums which are not
3598 defined in this compilation unit.
3599 For these the type will be void. This is a bad design decision
3600 as cross referencing across compilation units is impossible
3601 due to the missing name.
3602 b) forward declarations of structs/unions/enums/typedefs which
3603 are defined later in this file or in another file in the same
3604 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3605 Simply cross reference those again to get the true type.
3606 The forward references are not entered in the pending list and
3607 in the symbol table. */
3609 (*debug_swap
->swap_tir_in
) (bigend
,
3610 &(debug_info
->external_aux
3611 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3613 if (tir
.tq0
!= tqNil
)
3614 complain (&illegal_forward_tq0_complaint
, sym_name
);
3618 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3620 *pname
= "<undefined>";
3627 (debug_info
->external_aux
3628 + fh
->iauxBase
+ sh
.index
+ 1),
3629 tpp
, type_code
, pname
,
3630 fh
->fBigendian
, sym_name
);
3634 /* Follow a forward typedef. This might recursively
3635 call cross_ref till we get a non typedef'ed type.
3636 FIXME: This is not correct behaviour, but gdb currently
3637 cannot handle typedefs without type copying. Type
3638 copying is impossible as we might have mutual forward
3639 references between two files and the copied type would not
3640 get filled in when we later parse its definition. */
3641 *tpp
= parse_type (xref_fd
,
3642 debug_info
->external_aux
+ fh
->iauxBase
,
3646 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3647 add_pending (fh
, esh
, *tpp
);
3651 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3652 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3658 else if (sh
.st
== stTypedef
)
3660 /* Parse the type for a normal typedef. This might recursively call
3661 cross_ref till we get a non typedef'ed type.
3662 FIXME: This is not correct behaviour, but gdb currently
3663 cannot handle typedefs without type copying. But type copying is
3664 impossible as we might have mutual forward references between
3665 two files and the copied type would not get filled in when
3666 we later parse its definition. */
3667 *tpp
= parse_type (xref_fd
,
3668 debug_info
->external_aux
+ fh
->iauxBase
,
3672 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3676 /* Cross reference to a struct/union/enum which is defined
3677 in another file in the same compilation unit but that file
3678 has not been parsed yet.
3679 Initialize the type only, it will be filled in when
3680 it's definition is parsed. */
3681 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3683 add_pending (fh
, esh
, *tpp
);
3686 /* We used one auxent normally, two if we got a "next one" rf. */
3691 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3692 keeping the symtab sorted */
3694 static struct symbol
*
3695 mylookup_symbol (name
, block
, namespace, class)
3697 register struct block
*block
;
3698 enum namespace namespace;
3699 enum address_class
class;
3701 register int bot
, top
, inc
;
3702 register struct symbol
*sym
;
3705 top
= BLOCK_NSYMS (block
);
3709 sym
= BLOCK_SYM (block
, bot
);
3710 if (SYMBOL_NAME (sym
)[0] == inc
3711 && SYMBOL_NAMESPACE (sym
) == namespace
3712 && SYMBOL_CLASS (sym
) == class
3713 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3717 block
= BLOCK_SUPERBLOCK (block
);
3719 return mylookup_symbol (name
, block
, namespace, class);
3724 /* Add a new symbol S to a block B.
3725 Infrequently, we will need to reallocate the block to make it bigger.
3726 We only detect this case when adding to top_stack->cur_block, since
3727 that's the only time we know how big the block is. FIXME. */
3734 int nsyms
= BLOCK_NSYMS (b
)++;
3735 struct block
*origb
;
3736 struct parse_stack
*stackp
;
3738 if (b
== top_stack
->cur_block
&&
3739 nsyms
>= top_stack
->maxsyms
)
3741 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3742 /* In this case shrink_block is actually grow_block, since
3743 BLOCK_NSYMS(b) is larger than its current size. */
3745 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3747 /* Now run through the stack replacing pointers to the
3748 original block. shrink_block has already done this
3749 for the blockvector and BLOCK_FUNCTION. */
3750 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3752 if (stackp
->cur_block
== origb
)
3754 stackp
->cur_block
= b
;
3755 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3759 BLOCK_SYM (b
, nsyms
) = s
;
3762 /* Add a new block B to a symtab S */
3769 struct blockvector
*bv
= BLOCKVECTOR (s
);
3771 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3772 (sizeof (struct blockvector
)
3773 + BLOCKVECTOR_NBLOCKS (bv
)
3774 * sizeof (bv
->block
)));
3775 if (bv
!= BLOCKVECTOR (s
))
3776 BLOCKVECTOR (s
) = bv
;
3778 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3781 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3782 MIPS' linenumber encoding might need more than one byte
3783 to describe it, LAST is used to detect these continuation lines.
3785 Combining lines with the same line number seems like a bad idea.
3786 E.g: There could be a line number entry with the same line number after the
3787 prologue and GDB should not ignore it (this is a better way to find
3788 a prologue than mips_skip_prologue).
3789 But due to the compressed line table format there are line number entries
3790 for the same line which are needed to bridge the gap to the next
3791 line number entry. These entries have a bogus address info with them
3792 and we are unable to tell them from intended duplicate line number
3794 This is another reason why -ggdb debugging format is preferable. */
3797 add_line (lt
, lineno
, adr
, last
)
3798 struct linetable
*lt
;
3803 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3804 Change them to something sensible. */
3808 last
= -2; /* make sure we record first line */
3810 if (last
== lineno
) /* skip continuation lines */
3813 lt
->item
[lt
->nitems
].line
= lineno
;
3814 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3818 /* Sorting and reordering procedures */
3820 /* Blocks with a smaller low bound should come first */
3823 compare_blocks (arg1
, arg2
)
3827 register int addr_diff
;
3828 struct block
**b1
= (struct block
**) arg1
;
3829 struct block
**b2
= (struct block
**) arg2
;
3831 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3833 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3837 /* Sort the blocks of a symtab S.
3838 Reorder the blocks in the blockvector by code-address,
3839 as required by some MI search routines */
3845 struct blockvector
*bv
= BLOCKVECTOR (s
);
3847 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3850 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3851 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3852 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3853 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3857 * This is very unfortunate: normally all functions are compiled in
3858 * the order they are found, but if the file is compiled -O3 things
3859 * are very different. It would be nice to find a reliable test
3860 * to detect -O3 images in advance.
3862 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3863 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3864 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3865 sizeof (struct block
*),
3869 register CORE_ADDR high
= 0;
3870 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3872 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3873 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3874 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3875 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3878 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3879 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3881 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3882 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3883 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3884 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3888 /* Constructor/restructor/destructor procedures */
3890 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3891 MAXSYMS and linenumbers MAXLINES we'll put in it */
3893 static struct symtab
*
3894 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3898 struct objfile
*objfile
;
3900 struct symtab
*s
= allocate_symtab (name
, objfile
);
3902 LINETABLE (s
) = new_linetable (maxlines
);
3904 /* All symtabs must have at least two blocks */
3905 BLOCKVECTOR (s
) = new_bvect (2);
3906 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3907 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3908 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3909 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3911 s
->free_code
= free_linetable
;
3916 /* Allocate a new partial_symtab NAME */
3918 static struct partial_symtab
*
3919 new_psymtab (name
, objfile
, section_offsets
)
3921 struct objfile
*objfile
;
3922 struct section_offsets
*section_offsets
;
3924 struct partial_symtab
*psymtab
;
3926 psymtab
= allocate_psymtab (name
, objfile
);
3927 psymtab
->section_offsets
= section_offsets
;
3929 /* Keep a backpointer to the file's symbols */
3931 psymtab
->read_symtab_private
= ((char *)
3932 obstack_alloc (&objfile
->psymbol_obstack
,
3933 sizeof (struct symloc
)));
3934 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
3935 CUR_BFD (psymtab
) = cur_bfd
;
3936 DEBUG_SWAP (psymtab
) = debug_swap
;
3937 DEBUG_INFO (psymtab
) = debug_info
;
3938 PENDING_LIST (psymtab
) = pending_list
;
3940 /* The way to turn this into a symtab is to call... */
3941 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
3946 /* Allocate a linetable array of the given SIZE. Since the struct
3947 already includes one item, we subtract one when calculating the
3948 proper size to allocate. */
3950 static struct linetable
*
3951 new_linetable (size
)
3954 struct linetable
*l
;
3956 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
3957 l
= (struct linetable
*) xmalloc (size
);
3962 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
3963 I am not so sure about the 3.4 ones.
3965 Since the struct linetable already includes one item, we subtract one when
3966 calculating the proper size to allocate. */
3968 static struct linetable
*
3969 shrink_linetable (lt
)
3970 struct linetable
*lt
;
3973 return (struct linetable
*) xrealloc ((PTR
) lt
,
3974 (sizeof (struct linetable
)
3976 * sizeof (lt
->item
))));
3979 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
3981 static struct blockvector
*
3985 struct blockvector
*bv
;
3988 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
3989 bv
= (struct blockvector
*) xzalloc (size
);
3991 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
3996 /* Allocate and zero a new block of MAXSYMS symbols */
3998 static struct block
*
4002 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4004 return (struct block
*) xzalloc (size
);
4007 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4008 Shrink_block can also be used by add_symbol to grow a block. */
4010 static struct block
*
4016 struct blockvector
*bv
= BLOCKVECTOR (s
);
4019 /* Just reallocate it and fix references to the old one */
4021 new = (struct block
*) xrealloc ((PTR
) b
,
4022 (sizeof (struct block
)
4023 + ((BLOCK_NSYMS (b
) - 1)
4024 * sizeof (struct symbol
*))));
4026 /* Should chase pointers to old one. Fortunately, that`s just
4027 the block`s function and inferior blocks */
4028 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4029 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4030 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4031 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4032 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4033 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4034 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4038 /* Create a new symbol with printname NAME */
4040 static struct symbol
*
4044 struct symbol
*s
= ((struct symbol
*)
4045 obstack_alloc (¤t_objfile
->symbol_obstack
,
4046 sizeof (struct symbol
)));
4048 memset ((PTR
) s
, 0, sizeof (*s
));
4049 SYMBOL_NAME (s
) = name
;
4050 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4051 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4055 /* Create a new type with printname NAME */
4057 static struct type
*
4063 t
= alloc_type (current_objfile
);
4064 TYPE_NAME (t
) = name
;
4065 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4069 /* Read ECOFF debugging information from a BFD section. This is
4070 called from elfread.c. It parses the section into a
4071 ecoff_debug_info struct, and then lets the rest of the file handle
4075 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
4076 struct objfile
*objfile
;
4077 const struct ecoff_debug_swap
*swap
;
4079 struct section_offsets
*section_offsets
;
4081 bfd
*abfd
= objfile
->obfd
;
4082 struct ecoff_debug_info
*info
;
4084 info
= ((struct ecoff_debug_info
*)
4085 obstack_alloc (&objfile
->psymbol_obstack
,
4086 sizeof (struct ecoff_debug_info
)));
4088 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4089 error ("Error reading ECOFF debugging information: %s",
4090 bfd_errmsg (bfd_get_error ()));
4092 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
4096 /* Things used for calling functions in the inferior.
4097 These functions are exported to our companion
4098 mips-tdep.c file and are here because they play
4099 with the symbol-table explicitly. */
4101 /* Sigtramp: make sure we have all the necessary information
4102 about the signal trampoline code. Since the official code
4103 from MIPS does not do so, we make up that information ourselves.
4104 If they fix the library (unlikely) this code will neutralize itself. */
4106 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4107 here because it calls functions defined in this file, but perhaps
4108 this could be handled in a better way. */
4115 struct block
*b
, *b0
= NULL
;
4117 sigtramp_address
= -1;
4119 /* We have to handle the following cases here:
4120 a) The Mips library has a sigtramp label within sigvec.
4121 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4122 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4125 b0
= SYMBOL_BLOCK_VALUE (s
);
4126 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4130 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4131 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4134 /* But maybe this program uses its own version of sigvec */
4138 /* Did we or MIPSco fix the library ? */
4139 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4141 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4142 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4146 sigtramp_address
= SYMBOL_VALUE (s
);
4147 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4149 /* But what symtab does it live in ? */
4150 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4153 * Ok, there goes the fix: turn it into a procedure, with all the
4154 * needed info. Note we make it a nested procedure of sigvec,
4155 * which is the way the (assembly) code is actually written.
4157 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4158 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4159 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4161 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4163 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4165 SYMBOL_BLOCK_VALUE (s
) = b
;
4166 BLOCK_START (b
) = sigtramp_address
;
4167 BLOCK_END (b
) = sigtramp_end
;
4168 BLOCK_FUNCTION (b
) = s
;
4169 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4173 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4175 struct mips_extra_func_info
*e
=
4176 ((struct mips_extra_func_info
*)
4177 xzalloc (sizeof (struct mips_extra_func_info
)));
4179 e
->numargs
= 0; /* the kernel thinks otherwise */
4180 e
->pdr
.frameoffset
= 32;
4181 e
->pdr
.framereg
= SP_REGNUM
;
4182 /* Note that setting pcreg is no longer strictly necessary as
4183 mips_frame_saved_pc is now aware of signal handler frames. */
4184 e
->pdr
.pcreg
= PC_REGNUM
;
4185 e
->pdr
.regmask
= -2;
4186 /* Offset to saved r31, in the sigtramp case the saved registers
4187 are above the frame in the sigcontext.
4188 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4189 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4190 and 32 * 4 bytes for the floating point registers. */
4191 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4192 e
->pdr
.fregmask
= -1;
4193 /* Offset to saved f30 (first saved *double* register). */
4194 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4195 e
->pdr
.isym
= (long) s
;
4196 e
->pdr
.adr
= sigtramp_address
;
4198 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4199 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4200 SYMBOL_VALUE (s
) = (long) e
;
4201 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4202 SYMBOL_CLASS (s
) = LOC_CONST
;
4203 SYMBOL_TYPE (s
) = mdebug_type_void
;
4204 current_objfile
= NULL
;
4207 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4211 _initialize_mdebugread ()
4214 init_type (TYPE_CODE_VOID
, 1,
4216 "void", (struct objfile
*) NULL
);
4218 init_type (TYPE_CODE_INT
, 1,
4220 "char", (struct objfile
*) NULL
);
4221 mdebug_type_unsigned_char
=
4222 init_type (TYPE_CODE_INT
, 1,
4224 "unsigned char", (struct objfile
*) NULL
);
4226 init_type (TYPE_CODE_INT
, 2,
4228 "short", (struct objfile
*) NULL
);
4229 mdebug_type_unsigned_short
=
4230 init_type (TYPE_CODE_INT
, 2,
4232 "unsigned short", (struct objfile
*) NULL
);
4233 mdebug_type_int_32
=
4234 init_type (TYPE_CODE_INT
, 4,
4236 "int", (struct objfile
*) NULL
);
4237 mdebug_type_unsigned_int_32
=
4238 init_type (TYPE_CODE_INT
, 4,
4240 "unsigned int", (struct objfile
*) NULL
);
4241 mdebug_type_int_64
=
4242 init_type (TYPE_CODE_INT
, 8,
4244 "int", (struct objfile
*) NULL
);
4245 mdebug_type_unsigned_int_64
=
4246 init_type (TYPE_CODE_INT
, 8,
4248 "unsigned int", (struct objfile
*) NULL
);
4249 mdebug_type_long_32
=
4250 init_type (TYPE_CODE_INT
, 4,
4252 "long", (struct objfile
*) NULL
);
4253 mdebug_type_unsigned_long_32
=
4254 init_type (TYPE_CODE_INT
, 4,
4256 "unsigned long", (struct objfile
*) NULL
);
4257 mdebug_type_long_64
=
4258 init_type (TYPE_CODE_INT
, 8,
4260 "long", (struct objfile
*) NULL
);
4261 mdebug_type_unsigned_long_64
=
4262 init_type (TYPE_CODE_INT
, 8,
4264 "unsigned long", (struct objfile
*) NULL
);
4265 mdebug_type_long_long_64
=
4266 init_type (TYPE_CODE_INT
, 8,
4268 "long long", (struct objfile
*) NULL
);
4269 mdebug_type_unsigned_long_long_64
=
4270 init_type (TYPE_CODE_INT
, 8,
4272 "unsigned long long", (struct objfile
*) NULL
);
4273 mdebug_type_adr_32
=
4274 init_type (TYPE_CODE_PTR
, 4,
4276 "adr_32", (struct objfile
*) NULL
);
4277 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4278 mdebug_type_adr_64
=
4279 init_type (TYPE_CODE_PTR
, 8,
4281 "adr_64", (struct objfile
*) NULL
);
4282 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4284 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4286 "float", (struct objfile
*) NULL
);
4287 mdebug_type_double
=
4288 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4290 "double", (struct objfile
*) NULL
);
4291 mdebug_type_complex
=
4292 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4294 "complex", (struct objfile
*) NULL
);
4295 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4296 mdebug_type_double_complex
=
4297 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4299 "double complex", (struct objfile
*) NULL
);
4300 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4302 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4304 mdebug_type_string
=
4305 init_type (TYPE_CODE_STRING
,
4306 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4308 (struct objfile
*) NULL
);
4310 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4311 good? Would we be better off with TYPE_CODE_ERROR? Should
4312 TYPE_CODE_ERROR print things in hex if it knows the size? */
4313 mdebug_type_fixed_dec
=
4314 init_type (TYPE_CODE_INT
,
4315 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4317 (struct objfile
*) NULL
);
4319 mdebug_type_float_dec
=
4320 init_type (TYPE_CODE_ERROR
,
4321 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4322 0, "floating decimal",
4323 (struct objfile
*) NULL
);
4325 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4326 "<function, no debug info>", NULL
);
4327 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4328 nodebug_var_symbol_type
=
4329 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4330 "<variable, no debug info>", NULL
);