1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
50 #include "stabsread.h"
51 #include "complaints.h"
53 #if !defined (SEEK_SET)
58 /* These are needed if the tm.h file does not contain the necessary
59 mips specific definitions. */
61 #ifndef MIPS_EFI_SYMBOL_NAME
62 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
64 #include "coff/symconst.h"
65 typedef struct mips_extra_func_info
{
68 } *mips_extra_func_info_t
;
75 #include <sys/types.h>
78 #include <sys/param.h>
83 #include "gdb-stabs.h"
87 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
89 #include "libaout.h" /* Private BFD a.out information. */
90 #include "aout/aout64.h"
91 #include "aout/stab_gnu.h" /* STABS information */
93 #include "expression.h"
94 #include "language.h" /* Needed inside partial-stab.h */
96 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
97 #ifndef ECOFF_REG_TO_REGNUM
98 #define ECOFF_REG_TO_REGNUM(num) (num)
101 /* Each partial symbol table entry contains a pointer to private data
102 for the read_symtab() function to use when expanding a partial
103 symbol table entry to a full symbol table entry.
105 For mdebugread this structure contains the index of the FDR that this
106 psymtab represents and a pointer to the BFD that the psymtab was
109 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
110 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
111 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
112 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
113 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
114 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
120 const struct ecoff_debug_swap
*debug_swap
;
121 struct ecoff_debug_info
*debug_info
;
122 struct mdebug_pending
**pending_list
;
123 EXTR
*extern_tab
; /* Pointer to external symbols for this file. */
124 int extern_count
; /* Size of extern_tab. */
125 enum language pst_language
;
128 /* Things we import explicitly from other modules */
130 extern int info_verbose
;
132 /* Various complaints about symbol reading that don't abort the process */
134 static struct complaint bad_file_number_complaint
=
135 {"bad file number %d", 0, 0};
137 static struct complaint index_complaint
=
138 {"bad aux index at symbol %s", 0, 0};
140 static struct complaint aux_index_complaint
=
141 {"bad proc end in aux found from symbol %s", 0, 0};
143 static struct complaint block_index_complaint
=
144 {"bad aux index at block symbol %s", 0, 0};
146 static struct complaint unknown_ext_complaint
=
147 {"unknown external symbol %s", 0, 0};
149 static struct complaint unknown_sym_complaint
=
150 {"unknown local symbol %s", 0, 0};
152 static struct complaint unknown_st_complaint
=
153 {"with type %d", 0, 0};
155 static struct complaint block_overflow_complaint
=
156 {"block containing %s overfilled", 0, 0};
158 static struct complaint basic_type_complaint
=
159 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
161 static struct complaint unknown_type_qual_complaint
=
162 {"unknown type qualifier 0x%x", 0, 0};
164 static struct complaint array_index_type_complaint
=
165 {"illegal array index type for %s, assuming int", 0, 0};
167 static struct complaint bad_tag_guess_complaint
=
168 {"guessed tag type of %s incorrectly", 0, 0};
170 static struct complaint block_member_complaint
=
171 {"declaration block contains unhandled symbol type %d", 0, 0};
173 static struct complaint stEnd_complaint
=
174 {"stEnd with storage class %d not handled", 0, 0};
176 static struct complaint unknown_mdebug_symtype_complaint
=
177 {"unknown symbol type 0x%x", 0, 0};
179 static struct complaint stab_unknown_complaint
=
180 {"unknown stabs symbol %s", 0, 0};
182 static struct complaint pdr_for_nonsymbol_complaint
=
183 {"PDR for %s, but no symbol", 0, 0};
185 static struct complaint pdr_static_symbol_complaint
=
186 {"can't handle PDR for static proc at 0x%lx", 0, 0};
188 static struct complaint bad_setjmp_pdr_complaint
=
189 {"fixing bad setjmp PDR from libc", 0, 0};
191 static struct complaint bad_fbitfield_complaint
=
192 {"can't handle TIR fBitfield for %s", 0, 0};
194 static struct complaint bad_continued_complaint
=
195 {"illegal TIR continued for %s", 0, 0};
197 static struct complaint bad_rfd_entry_complaint
=
198 {"bad rfd entry for %s: file %d, index %d", 0, 0};
200 static struct complaint unexpected_type_code_complaint
=
201 {"unexpected type code for %s", 0, 0};
203 static struct complaint unable_to_cross_ref_complaint
=
204 {"unable to cross ref btTypedef for %s", 0, 0};
206 static struct complaint illegal_forward_tq0_complaint
=
207 {"illegal tq0 in forward typedef for %s", 0, 0};
209 static struct complaint illegal_forward_bt_complaint
=
210 {"illegal bt %d in forward typedef for %s", 0, 0};
212 static struct complaint bad_linetable_guess_complaint
=
213 {"guessed size of linetable for %s incorrectly", 0, 0};
215 static struct complaint bad_ext_ifd_complaint
=
216 {"bad ifd for external symbol: %d (max %d)", 0, 0};
218 static struct complaint bad_ext_iss_complaint
=
219 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
221 /* Macros and extra defs */
223 /* Puns: hard to find whether -g was used and how */
225 #define MIN_GLEVEL GLEVEL_0
226 #define compare_glevel(a,b) \
227 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
228 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
230 /* Things that really are local to this module */
232 /* Remember what we deduced to be the source language of this psymtab. */
234 static enum language psymtab_language
= language_unknown
;
240 /* How to parse debugging information for CUR_BFD. */
242 static const struct ecoff_debug_swap
*debug_swap
;
244 /* Pointers to debugging information for CUR_BFD. */
246 static struct ecoff_debug_info
*debug_info
;
248 /* Pointer to current file decriptor record, and its index */
253 /* Index of current symbol */
257 /* Note how much "debuggable" this image is. We would like
258 to see at least one FDR with full symbols */
263 /* When examining .o files, report on undefined symbols */
265 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
267 /* Pseudo symbol to use when putting stabs into the symbol table. */
269 static char stabs_symbol
[] = STABS_SYMBOL
;
271 /* Types corresponding to btComplex, btDComplex, etc. These are here
272 rather than in gdbtypes.c or some such, because the meaning of codes
273 like btComplex is specific to the mdebug debug format. FIXME: We should
274 be using our own types thoughout this file, instead of sometimes using
277 static struct type
*mdebug_type_fixed_dec
;
278 static struct type
*mdebug_type_float_dec
;
279 static struct type
*mdebug_type_string
;
281 /* Forward declarations */
284 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
287 parse_partial_symbols
PARAMS ((struct objfile
*,
288 struct section_offsets
*));
291 *get_rfd
PARAMS ((int, int));
294 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
297 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
298 char **, int, char *));
300 static struct symbol
*
301 new_symbol
PARAMS ((char *));
304 new_type
PARAMS ((char *));
306 static struct block
*
307 new_block
PARAMS ((int));
309 static struct symtab
*
310 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
312 static struct linetable
*
313 new_linetable
PARAMS ((int));
315 static struct blockvector
*
316 new_bvect
PARAMS ((int));
319 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
322 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
324 static struct symbol
*
325 mylookup_symbol
PARAMS ((char *, struct block
*, enum namespace,
326 enum address_class
));
328 static struct block
*
329 shrink_block
PARAMS ((struct block
*, struct symtab
*));
332 xzalloc
PARAMS ((unsigned int));
335 sort_blocks
PARAMS ((struct symtab
*));
338 compare_blocks
PARAMS ((const void *, const void *));
340 static struct partial_symtab
*
341 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
344 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
347 add_block
PARAMS ((struct block
*, struct symtab
*));
350 add_symbol
PARAMS ((struct symbol
*, struct block
*));
353 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
355 static struct linetable
*
356 shrink_linetable
PARAMS ((struct linetable
*));
359 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int));
362 mdebug_next_symbol_text
PARAMS ((void));
364 /* Address bounds for the signal trampoline in inferior, if any */
366 CORE_ADDR sigtramp_address
, sigtramp_end
;
368 /* Allocate zeroed memory */
374 PTR p
= xmalloc (size
);
380 /* Exported procedure: Builds a symtab from the PST partial one.
381 Restores the environment in effect when PST was created, delegates
382 most of the work to an ancillary procedure, and sorts
383 and reorders the symtab list at the end */
386 mdebug_psymtab_to_symtab (pst
)
387 struct partial_symtab
*pst
;
395 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
396 gdb_flush (gdb_stdout
);
399 next_symbol_text_func
= mdebug_next_symbol_text
;
401 psymtab_to_symtab_1 (pst
, pst
->filename
);
403 /* Match with global symbols. This only needs to be done once,
404 after all of the symtabs and dependencies have been read in. */
405 scan_file_globals (pst
->objfile
);
408 printf_filtered ("done.\n");
411 /* File-level interface functions */
413 /* Find a file descriptor given its index RF relative to a file CF */
423 fdrs
= debug_info
->fdr
;
425 /* Object files do not have the RFD table, all refs are absolute */
428 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
429 ((char *) debug_info
->external_rfd
431 * debug_swap
->external_rfd_size
)),
436 /* Return a safer print NAME for a file descriptor */
443 return "<stripped file>";
446 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
450 /* Read in and parse the symtab of the file OBJFILE. Symbols from
451 different sections are relocated via the SECTION_OFFSETS. */
454 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
455 struct objfile
*objfile
;
456 const struct ecoff_debug_swap
*swap
;
457 struct ecoff_debug_info
*info
;
458 struct section_offsets
*section_offsets
;
460 cur_bfd
= objfile
->obfd
;
464 /* Make sure all the FDR information is swapped in. */
465 if (info
->fdr
== (FDR
*) NULL
)
471 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
472 (info
->symbolic_header
.ifdMax
474 fdr_src
= info
->external_fdr
;
476 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
478 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
479 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
482 parse_partial_symbols (objfile
, section_offsets
);
485 /* Check to make sure file was compiled with -g. If not, warn the
486 user of this limitation. */
487 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
489 if (max_gdbinfo
== 0)
490 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
492 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
493 gdb_flush (gdb_stdout
);
498 /* Local utilities */
500 /* Map of FDR indexes to partial symtabs */
504 struct partial_symtab
*pst
; /* the psymtab proper */
505 long n_globals
; /* exported globals (external symbols) */
506 long globals_offset
; /* cumulative */
510 /* Utility stack, used to nest procedures and blocks properly.
511 It is a doubly linked list, to avoid too many alloc/free.
512 Since we might need it quite a few times it is NOT deallocated
515 static struct parse_stack
517 struct parse_stack
*next
, *prev
;
518 struct symtab
*cur_st
; /* Current symtab. */
519 struct block
*cur_block
; /* Block in it. */
521 /* What are we parsing. stFile, or stBlock are for files and
522 blocks. stProc or stStaticProc means we have seen the start of a
523 procedure, but not the start of the block within in. When we see
524 the start of that block, we change it to stNil, without pushing a
525 new block, i.e. stNil means both a procedure and a block. */
529 int maxsyms
; /* Max symbols in this block. */
530 struct type
*cur_type
; /* Type we parse fields for. */
531 int cur_field
; /* Field number in cur_type. */
532 CORE_ADDR procadr
; /* Start addres of this procedure */
533 int numargs
; /* Its argument count */
536 *top_stack
; /* Top stack ptr */
539 /* Enter a new lexical context */
544 struct parse_stack
*new;
546 /* Reuse frames if possible */
547 if (top_stack
&& top_stack
->prev
)
548 new = top_stack
->prev
;
550 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
551 /* Initialize new frame with previous content */
554 register struct parse_stack
*prev
= new->prev
;
557 top_stack
->prev
= new;
559 new->next
= top_stack
;
564 /* Exit a lexical context */
572 top_stack
= top_stack
->next
;
576 /* Cross-references might be to things we haven't looked at
577 yet, e.g. type references. To avoid too many type
578 duplications we keep a quick fixup table, an array
579 of lists of references indexed by file descriptor */
581 struct mdebug_pending
583 struct mdebug_pending
*next
; /* link */
584 char *s
; /* the unswapped symbol */
585 struct type
*t
; /* its partial type descriptor */
589 /* The pending information is kept for an entire object file, and used
590 to be in the sym_private field. I took it out when I split
591 mdebugread from mipsread, because this might not be the only type
592 of symbols read from an object file. Instead, we allocate the
593 pending information table when we create the partial symbols, and
594 we store a pointer to the single table in each psymtab. */
596 static struct mdebug_pending
**pending_list
;
598 /* Check whether we already saw symbol SH in file FH */
600 static struct mdebug_pending
*
601 is_pending_symbol (fh
, sh
)
605 int f_idx
= fh
- debug_info
->fdr
;
606 register struct mdebug_pending
*p
;
608 /* Linear search is ok, list is typically no more than 10 deep */
609 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
615 /* Add a new symbol SH of type T */
618 add_pending (fh
, sh
, t
)
623 int f_idx
= fh
- debug_info
->fdr
;
624 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
626 /* Make sure we do not make duplicates */
629 p
= ((struct mdebug_pending
*)
630 obstack_alloc (¤t_objfile
->psymbol_obstack
,
631 sizeof (struct mdebug_pending
)));
634 p
->next
= pending_list
[f_idx
];
635 pending_list
[f_idx
] = p
;
640 /* Parsing Routines proper. */
642 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
643 For blocks, procedures and types we open a new lexical context.
644 This is basically just a big switch on the symbol's type. Argument
645 AX is the base pointer of aux symbols for this file (fh->iauxBase).
646 EXT_SH points to the unswapped symbol, which is needed for struct,
647 union, etc., types; it is NULL for an EXTR. BIGEND says whether
648 aux symbols are big-endian or little-endian. Return count of
649 SYMR's handled (normally one). */
652 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
657 struct section_offsets
*section_offsets
;
659 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
660 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
661 debug_swap
->swap_sym_in
;
665 struct mdebug_pending
*pend
;
669 enum address_class
class;
671 long svalue
= sh
->value
;
674 if (ext_sh
== (char *) NULL
)
675 name
= debug_info
->ssext
+ sh
->iss
;
677 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
682 /* The value of a stEnd symbol is the displacement from the
683 corresponding start symbol value, do not relocate it. */
685 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
692 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
696 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
705 case stGlobal
: /* external symbol, goes into global block */
707 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
709 s
= new_symbol (name
);
710 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
713 case stStatic
: /* static data, goes into current block. */
715 b
= top_stack
->cur_block
;
716 s
= new_symbol (name
);
717 if (sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
719 /* It is a FORTRAN common block. At least for SGI Fortran the
720 address is not in the symbol; we need to fix it later in
721 scan_file_globals. */
722 int bucket
= hashname (SYMBOL_NAME (s
));
723 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
724 global_sym_chain
[bucket
] = s
;
727 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
730 case stLocal
: /* local variable, goes into current block */
731 if (sh
->sc
== scRegister
)
733 class = LOC_REGISTER
;
734 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
738 b
= top_stack
->cur_block
;
739 s
= new_symbol (name
);
740 SYMBOL_VALUE (s
) = svalue
;
742 data
: /* Common code for symbols describing data */
743 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
744 SYMBOL_CLASS (s
) = class;
747 /* Type could be missing in a number of cases */
748 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
749 SYMBOL_TYPE (s
) = builtin_type_int
; /* undefined? */
751 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
752 /* Value of a data symbol is its memory address */
755 case stParam
: /* arg to procedure, goes into current block */
757 top_stack
->numargs
++;
759 /* Special GNU C++ name. */
760 if (name
[0] == CPLUS_MARKER
&& name
[1] == 't' && name
[2] == 0)
761 name
= "this"; /* FIXME, not alloc'd in obstack */
762 s
= new_symbol (name
);
764 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
768 /* Pass by value in register. */
769 SYMBOL_CLASS(s
) = LOC_REGPARM
;
770 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
773 /* Pass by reference on stack. */
774 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
777 /* Pass by reference in register. */
778 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
779 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
782 /* Pass by value on stack. */
783 SYMBOL_CLASS(s
) = LOC_ARG
;
786 SYMBOL_VALUE (s
) = svalue
;
787 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
788 add_symbol (s
, top_stack
->cur_block
);
791 case stLabel
: /* label, goes into current block */
792 s
= new_symbol (name
);
793 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
794 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
795 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
796 SYMBOL_TYPE (s
) = builtin_type_int
;
797 add_symbol (s
, top_stack
->cur_block
);
800 case stProc
: /* Procedure, usually goes into global block */
801 case stStaticProc
: /* Static procedure, goes into current block */
802 s
= new_symbol (name
);
803 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
804 SYMBOL_CLASS (s
) = LOC_BLOCK
;
805 /* Type of the return value */
806 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
807 t
= builtin_type_int
;
809 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
810 b
= top_stack
->cur_block
;
811 if (sh
->st
== stProc
)
813 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
814 /* The next test should normally be true, but provides a
815 hook for nested functions (which we don't want to make
817 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
818 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
819 /* Irix 5 sometimes has duplicate names for the same
820 function. We want to add such names up at the global
821 level, not as a nested function. */
822 else if (sh
->value
== top_stack
->procadr
)
823 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
827 /* Make a type for the procedure itself */
829 /* FIXME: This has not been tested yet! See dbxread.c */
830 /* Generate a template for the type of this function. The
831 types of the arguments will be added as we read the symbol
833 memcpy (lookup_function_type (t
), SYMBOL_TYPE (s
), sizeof (struct type
));
835 SYMBOL_TYPE (s
) = lookup_function_type (t
);
838 /* Create and enter a new lexical context */
839 b
= new_block (top_stack
->maxsyms
);
840 SYMBOL_BLOCK_VALUE (s
) = b
;
841 BLOCK_FUNCTION (b
) = s
;
842 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
843 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
844 add_block (b
, top_stack
->cur_st
);
846 /* Not if we only have partial info */
847 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
851 top_stack
->cur_block
= b
;
852 top_stack
->blocktype
= sh
->st
;
853 top_stack
->cur_type
= SYMBOL_TYPE (s
);
854 top_stack
->cur_field
= -1;
855 top_stack
->procadr
= sh
->value
;
856 top_stack
->numargs
= 0;
859 /* Beginning of code for structure, union, and enum definitions.
860 They all share a common set of local variables, defined here. */
862 enum type_code type_code
;
868 case stStruct
: /* Start a block defining a struct type */
869 type_code
= TYPE_CODE_STRUCT
;
870 goto structured_common
;
872 case stUnion
: /* Start a block defining a union type */
873 type_code
= TYPE_CODE_UNION
;
874 goto structured_common
;
876 case stEnum
: /* Start a block defining an enum type */
877 type_code
= TYPE_CODE_ENUM
;
878 goto structured_common
;
880 case stBlock
: /* Either a lexical block, or some type */
881 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
&& sh
->sc
!= scSCommon
)
882 goto case_stBlock_code
; /* Lexical block */
884 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
886 /* Common code for handling struct, union, enum, and/or as-yet-
887 unknown-type blocks of info about structured data. `type_code'
888 has been set to the proper TYPE_CODE, if we know it. */
891 top_stack
->blocktype
= stBlock
;
893 /* First count the number of fields and the highest value. */
896 for (ext_tsym
= ext_sh
+ external_sym_size
;
898 ext_tsym
+= external_sym_size
)
902 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
910 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
911 /* If the type of the member is Nil (or Void),
912 without qualifiers, assume the tag is an
914 if (tsym
.index
== indexNil
)
915 type_code
= TYPE_CODE_ENUM
;
918 (*debug_swap
->swap_tir_in
) (bigend
,
919 &ax
[tsym
.index
].a_ti
,
921 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
923 type_code
= TYPE_CODE_ENUM
;
926 if (tsym
.value
> max_value
)
927 max_value
= tsym
.value
;
936 /* This is a no-op; is it trying to tell us something
937 we should be checking? */
938 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
942 /* This is something like a struct within a
943 struct. Skip over the fields of the inner
944 struct. The -1 is because the for loop will
945 increment ext_tsym. */
946 ext_tsym
= ((char *) debug_info
->external_sym
947 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
948 * external_sym_size
));
954 /* mips cc puts out a typedef for struct x if it is not yet
955 defined when it encounters
956 struct y { struct x *xp; };
961 /* Irix5 cc puts out a stIndirect for struct x if it is not
962 yet defined when it encounters
963 struct y { struct x *xp; };
968 complain (&block_member_complaint
, tsym
.st
);
973 /* In an stBlock, there is no way to distinguish structs,
974 unions, and enums at this point. This is a bug in the
975 original design (that has been fixed with the recent
976 addition of the stStruct, stUnion, and stEnum symbol
977 types.) The way you can tell is if/when you see a variable
978 or field of that type. In that case the variable's type
979 (in the AUX table) says if the type is struct, union, or
980 enum, and points back to the stBlock here. So you can
981 patch the tag kind up later - but only if there actually is
982 a variable or field of that type.
984 So until we know for sure, we will guess at this point.
986 If the first member has index==indexNil or a void type,
987 assume we have an enumeration.
988 Otherwise, if there is more than one member, and all
989 the members have offset 0, assume we have a union.
990 Otherwise, assume we have a struct.
992 The heuristic could guess wrong in the case of of an
993 enumeration with no members or a union with one (or zero)
994 members, or when all except the last field of a struct have
995 width zero. These are uncommon and/or illegal situations,
996 and in any case guessing wrong probably doesn't matter
999 But if we later do find out we were wrong, we fixup the tag
1000 kind. Members of an enumeration must be handled
1001 differently from struct/union fields, and that is harder to
1002 patch up, but luckily we shouldn't need to. (If there are
1003 any enumeration members, we can tell for sure it's an enum
1006 if (type_code
== TYPE_CODE_UNDEF
)
1007 if (nfields
> 1 && max_value
== 0)
1008 type_code
= TYPE_CODE_UNION
;
1010 type_code
= TYPE_CODE_STRUCT
;
1012 /* Create a new type or use the pending type. */
1013 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1014 if (pend
== (struct mdebug_pending
*) NULL
)
1016 t
= new_type (NULL
);
1017 add_pending (cur_fdr
, ext_sh
, t
);
1022 /* Do not set the tag name if it is a compiler generated tag name
1023 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1024 Alpha cc puts out an sh->iss of zero for those. */
1025 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1026 TYPE_TAG_NAME (t
) = NULL
;
1028 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1031 TYPE_CODE (t
) = type_code
;
1032 TYPE_LENGTH (t
) = sh
->value
;
1033 TYPE_NFIELDS (t
) = nfields
;
1034 TYPE_FIELDS (t
) = f
= ((struct field
*)
1036 nfields
* sizeof (struct field
)));
1038 if (type_code
== TYPE_CODE_ENUM
)
1040 /* This is a non-empty enum. */
1042 /* DEC c89 has the number of enumerators in the sh.value field,
1043 not the type length, so we have to compensate for that
1044 incompatibility quirk.
1045 This might do the wrong thing for an enum with one or two
1046 enumerators and gcc -gcoff -fshort-enums, but these cases
1047 are hopefully rare enough. */
1048 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
))
1049 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1050 for (ext_tsym
= ext_sh
+ external_sym_size
;
1052 ext_tsym
+= external_sym_size
)
1055 struct symbol
*enum_sym
;
1057 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1059 if (tsym
.st
!= stMember
)
1062 f
->bitpos
= tsym
.value
;
1064 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1067 enum_sym
= ((struct symbol
*)
1068 obstack_alloc (¤t_objfile
->symbol_obstack
,
1069 sizeof (struct symbol
)));
1070 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1071 SYMBOL_NAME (enum_sym
) = f
->name
;
1072 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1073 SYMBOL_TYPE (enum_sym
) = t
;
1074 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1075 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1076 add_symbol (enum_sym
, top_stack
->cur_block
);
1078 /* Skip the stMembers that we've handled. */
1083 /* make this the current type */
1084 top_stack
->cur_type
= t
;
1085 top_stack
->cur_field
= 0;
1087 /* Do not create a symbol for alpha cc unnamed structs. */
1091 /* gcc puts out an empty struct for an opaque struct definitions,
1092 do not create a symbol for it either. */
1093 if (TYPE_NFIELDS (t
) == 0)
1095 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1099 s
= new_symbol (name
);
1100 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1101 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1102 SYMBOL_VALUE (s
) = 0;
1103 SYMBOL_TYPE (s
) = t
;
1104 add_symbol (s
, top_stack
->cur_block
);
1107 /* End of local variables shared by struct, union, enum, and
1108 block (as yet unknown struct/union/enum) processing. */
1112 /* beginnning of (code) block. Value of symbol
1113 is the displacement from procedure start */
1114 push_parse_stack ();
1116 /* Do not start a new block if this is the outermost block of a
1117 procedure. This allows the LOC_BLOCK symbol to point to the
1118 block with the local variables, so funcname::var works. */
1119 if (top_stack
->blocktype
== stProc
1120 || top_stack
->blocktype
== stStaticProc
)
1122 top_stack
->blocktype
= stNil
;
1126 top_stack
->blocktype
= stBlock
;
1127 b
= new_block (top_stack
->maxsyms
);
1128 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1129 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1130 top_stack
->cur_block
= b
;
1131 add_block (b
, top_stack
->cur_st
);
1134 case stEnd
: /* end (of anything) */
1135 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
1137 /* Finished with type */
1138 top_stack
->cur_type
= 0;
1140 else if (sh
->sc
== scText
&&
1141 (top_stack
->blocktype
== stProc
||
1142 top_stack
->blocktype
== stStaticProc
))
1144 /* Finished with procedure */
1145 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1146 struct mips_extra_func_info
*e
;
1150 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1152 /* Make up special symbol to contain procedure specific info */
1153 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1154 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1155 SYMBOL_CLASS (s
) = LOC_CONST
;
1156 SYMBOL_TYPE (s
) = builtin_type_void
;
1157 e
= ((struct mips_extra_func_info
*)
1158 obstack_alloc (¤t_objfile
->symbol_obstack
,
1159 sizeof (struct mips_extra_func_info
)));
1160 SYMBOL_VALUE (s
) = (long) e
;
1161 e
->numargs
= top_stack
->numargs
;
1162 add_symbol (s
, top_stack
->cur_block
);
1164 /* Reallocate symbols, saving memory */
1165 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1167 /* f77 emits proc-level with address bounds==[0,0],
1168 So look for such child blocks, and patch them. */
1169 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1171 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1172 if (BLOCK_SUPERBLOCK (b_bad
) == b
1173 && BLOCK_START (b_bad
) == top_stack
->procadr
1174 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1176 BLOCK_START (b_bad
) = BLOCK_START (b
);
1177 BLOCK_END (b_bad
) = BLOCK_END (b
);
1181 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1183 /* End of (code) block. The value of the symbol is the
1184 displacement from the procedure`s start address of the
1185 end of this block. */
1186 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1187 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1189 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1191 /* End of outermost block. Pop parse stack and ignore. The
1192 following stEnd of stProc will take care of the block. */
1195 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1197 /* End of file. Pop parse stack and ignore. Higher
1198 level code deals with this. */
1202 complain (&stEnd_complaint
, sh
->sc
);
1204 pop_parse_stack (); /* restore previous lexical context */
1207 case stMember
: /* member of struct or union */
1208 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1210 f
->bitpos
= sh
->value
;
1212 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1213 f
->bitsize
= bitsize
;
1216 case stIndirect
: /* forward declaration on Irix5 */
1217 /* Forward declarations from Irix5 cc are handled by cross_ref,
1221 case stTypedef
: /* type definition */
1222 /* Typedefs for forward declarations and opaque structs from alpha cc
1223 are handled by cross_ref, skip them. */
1227 /* Parse the type or use the pending type. */
1228 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1229 if (pend
== (struct mdebug_pending
*) NULL
)
1231 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1232 add_pending (cur_fdr
, ext_sh
, t
);
1237 /* mips cc puts out a typedef with the name of the struct for forward
1238 declarations. These should not go into the symbol table and
1239 TYPE_NAME should not be set for them.
1240 They can't be distinguished from an intentional typedef to
1241 the same name however:
1243 struct x { int ix; int jx; };
1247 struct xx {int ixx; int jxx; };
1248 generates a cross referencing stTypedef for x and xx.
1249 The user visible effect of this is that the type of a pointer
1250 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1251 The problem is fixed with alpha cc and Irix5 cc. */
1253 /* However if the typedef cross references to an opaque aggregate, it
1254 is safe to omit it from the symbol table. */
1256 if (has_opaque_xref (cur_fdr
, sh
))
1258 s
= new_symbol (name
);
1259 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1260 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1261 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1262 SYMBOL_TYPE (s
) = t
;
1263 add_symbol (s
, top_stack
->cur_block
);
1265 /* Incomplete definitions of structs should not get a name. */
1266 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1267 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1268 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1269 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1271 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1272 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1274 /* If we are giving a name to a type such as "pointer to
1275 foo" or "function returning foo", we better not set
1276 the TYPE_NAME. If the program contains "typedef char
1277 *caddr_t;", we don't want all variables of type char
1278 * to print as caddr_t. This is not just a
1279 consequence of GDB's type management; CC and GCC (at
1280 least through version 2.4) both output variables of
1281 either type char * or caddr_t with the type
1282 refering to the stTypedef symbol for caddr_t. If a future
1283 compiler cleans this up it GDB is not ready for it
1284 yet, but if it becomes ready we somehow need to
1285 disable this check (without breaking the PCC/GCC2.4
1290 Fortunately, this check seems not to be necessary
1291 for anything except pointers or functions. */
1294 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1298 case stFile
: /* file name */
1299 push_parse_stack ();
1300 top_stack
->blocktype
= sh
->st
;
1303 /* I`ve never seen these for C */
1305 break; /* register relocation */
1307 break; /* forwarding address */
1309 break; /* constant */
1311 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1318 /* Parse the type information provided in the raw AX entries for
1319 the symbol SH. Return the bitfield size in BS, in case.
1320 We must byte-swap the AX entries before we use them; BIGEND says whether
1321 they are big-endian or little-endian (from fh->fBigendian). */
1323 static struct type
*
1324 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1327 unsigned int aux_index
;
1332 /* Null entries in this map are treated specially */
1333 static struct type
**map_bt
[] =
1335 &builtin_type_void
, /* btNil */
1337 &builtin_type_char
, /* btChar */
1338 &builtin_type_unsigned_char
,/* btUChar */
1339 &builtin_type_short
, /* btShort */
1340 &builtin_type_unsigned_short
, /* btUShort */
1341 &builtin_type_int
, /* btInt */
1342 &builtin_type_unsigned_int
, /* btUInt */
1343 &builtin_type_long
, /* btLong */
1344 &builtin_type_unsigned_long
,/* btULong */
1345 &builtin_type_float
, /* btFloat */
1346 &builtin_type_double
, /* btDouble */
1353 &builtin_type_complex
, /* btComplex */
1354 &builtin_type_double_complex
,/* btDComplex */
1356 &mdebug_type_fixed_dec
, /* btFixedDec */
1357 &mdebug_type_float_dec
, /* btFloatDec */
1358 &mdebug_type_string
, /* btString */
1361 &builtin_type_void
, /* btVoid */
1362 0, /* DEC C++: Pointer to member */
1363 0, /* DEC C++: Virtual function table */
1364 0, /* DEC C++: Class (Record) */
1365 &builtin_type_long
, /* btLong64 */
1366 &builtin_type_unsigned_long
, /* btULong64 */
1367 &builtin_type_long_long
, /* btLongLong64 */
1368 &builtin_type_unsigned_long_long
, /* btULongLong64 */
1369 &builtin_type_unsigned_long
, /* btAdr64 */
1370 &builtin_type_long
, /* btInt64 */
1371 &builtin_type_unsigned_long
, /* btUInt64 */
1375 struct type
*tp
= 0;
1376 enum type_code type_code
= TYPE_CODE_UNDEF
;
1378 /* Handle undefined types, they have indexNil. */
1379 if (aux_index
== indexNil
)
1380 return builtin_type_int
;
1382 /* Handle corrupt aux indices. */
1383 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1385 complain (&index_complaint
, sym_name
);
1386 return builtin_type_int
;
1390 /* Use aux as a type information record, map its basic type. */
1391 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1392 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1394 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1395 return builtin_type_int
;
1399 tp
= *map_bt
[t
->bt
];
1404 /* Cannot use builtin types -- build our own */
1408 tp
= lookup_pointer_type (builtin_type_void
);
1411 type_code
= TYPE_CODE_STRUCT
;
1414 type_code
= TYPE_CODE_UNION
;
1417 type_code
= TYPE_CODE_ENUM
;
1420 type_code
= TYPE_CODE_RANGE
;
1423 type_code
= TYPE_CODE_SET
;
1426 /* alpha cc uses this for typedefs. The true type will be
1427 obtained by crossreferencing below. */
1428 type_code
= TYPE_CODE_ERROR
;
1431 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1432 return builtin_type_int
;
1436 /* Move on to next aux */
1441 /* Inhibit core dumps with some cfront generated objects that
1443 if (bs
== (int *)NULL
)
1445 complain (&bad_fbitfield_complaint
, sym_name
);
1446 return builtin_type_int
;
1448 *bs
= AUX_GET_WIDTH (bigend
, ax
);
1452 /* All these types really point to some (common) MIPS type
1453 definition, and only the type-qualifiers fully identify
1454 them. We'll make the same effort at sharing. */
1455 if (t
->bt
== btStruct
||
1459 /* btSet (I think) implies that the name is a tag name, not a typedef
1460 name. This apparently is a MIPS extension for C sets. */
1465 /* Try to cross reference this type, build new type on failure. */
1466 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1467 if (tp
== (struct type
*) NULL
)
1468 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1470 /* DEC c89 produces cross references to qualified aggregate types,
1471 dereference them. */
1472 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1473 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1474 tp
= tp
->target_type
;
1476 /* Make sure that TYPE_CODE(tp) has an expected type code.
1477 Any type may be returned from cross_ref if file indirect entries
1479 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1480 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1481 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1483 complain (&unexpected_type_code_complaint
, sym_name
);
1488 /* Usually, TYPE_CODE(tp) is already type_code. The main
1489 exception is if we guessed wrong re struct/union/enum.
1490 But for struct vs. union a wrong guess is harmless, so
1491 don't complain(). */
1492 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1493 && type_code
!= TYPE_CODE_ENUM
)
1494 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1495 && type_code
== TYPE_CODE_ENUM
))
1497 complain (&bad_tag_guess_complaint
, sym_name
);
1500 if (TYPE_CODE (tp
) != type_code
)
1502 TYPE_CODE (tp
) = type_code
;
1505 /* Do not set the tag name if it is a compiler generated tag name
1506 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1507 if (name
[0] == '.' || name
[0] == '\0')
1508 TYPE_TAG_NAME (tp
) = NULL
;
1509 else if (TYPE_TAG_NAME (tp
) == NULL
1510 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1511 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1512 ¤t_objfile
->type_obstack
);
1516 /* All these types really point to some (common) MIPS type
1517 definition, and only the type-qualifiers fully identify
1518 them. We'll make the same effort at sharing.
1519 FIXME: btIndirect cannot happen here as it is handled by the
1520 switch t->bt above. And we are not doing any guessing on range types. */
1521 if (t
->bt
== btIndirect
||
1526 /* Try to cross reference this type, build new type on failure. */
1527 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1528 if (tp
== (struct type
*) NULL
)
1529 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1531 /* Make sure that TYPE_CODE(tp) has an expected type code.
1532 Any type may be returned from cross_ref if file indirect entries
1534 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1536 complain (&unexpected_type_code_complaint
, sym_name
);
1540 /* Usually, TYPE_CODE(tp) is already type_code. The main
1541 exception is if we guessed wrong re struct/union/enum. */
1542 if (TYPE_CODE (tp
) != type_code
)
1544 complain (&bad_tag_guess_complaint
, sym_name
);
1545 TYPE_CODE (tp
) = type_code
;
1547 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1548 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1549 ¤t_objfile
->type_obstack
);
1552 if (t
->bt
== btTypedef
)
1556 /* Try to cross reference this type, it should succeed. */
1557 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1558 if (tp
== (struct type
*) NULL
)
1560 complain (&unable_to_cross_ref_complaint
, sym_name
);
1561 tp
= builtin_type_int
;
1565 /* Deal with range types */
1566 if (t
->bt
== btRange
)
1568 TYPE_NFIELDS (tp
) = 2;
1569 TYPE_FIELDS (tp
) = ((struct field
*)
1570 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1571 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1572 ¤t_objfile
->type_obstack
);
1573 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1575 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1576 ¤t_objfile
->type_obstack
);
1577 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1581 /* Parse all the type qualifiers now. If there are more
1582 than 6 the game will continue in the next aux */
1586 #define PARSE_TQ(tq) \
1587 if (t->tq != tqNil) \
1588 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1600 /* mips cc 2.x and gcc never put out continued aux entries. */
1604 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1608 /* Complain for illegal continuations due to corrupt aux entries. */
1610 complain (&bad_continued_complaint
, sym_name
);
1615 /* Make up a complex type from a basic one. Type is passed by
1616 reference in TPP and side-effected as necessary. The type
1617 qualifier TQ says how to handle the aux symbols at AX for
1618 the symbol SX we are currently analyzing. BIGEND says whether
1619 aux symbols are big-endian or little-endian.
1620 Returns the number of aux symbols we parsed. */
1623 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1634 /* Used in array processing */
1645 t
= lookup_pointer_type (*tpp
);
1650 t
= lookup_function_type (*tpp
);
1657 /* Determine and record the domain type (type of index) */
1658 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1664 rf
= AUX_GET_ISYM (bigend
, ax
);
1667 fh
= get_rfd (fd
, rf
);
1669 indx
= parse_type (fd
, debug_info
->external_aux
+ fh
->iauxBase
,
1670 id
, (int *) NULL
, bigend
, sym_name
);
1672 /* The bounds type should be an integer type, but might be anything
1673 else due to corrupt aux entries. */
1674 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1676 complain (&array_index_type_complaint
, sym_name
);
1677 indx
= builtin_type_int
;
1680 /* Get the bounds, and create the array type. */
1682 lower
= AUX_GET_DNLOW (bigend
, ax
);
1684 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1686 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1688 range
= create_range_type ((struct type
*) NULL
, indx
,
1691 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1693 /* We used to fill in the supplied array element bitsize
1694 here if the TYPE_LENGTH of the target type was zero.
1695 This happens for a `pointer to an array of anonymous structs',
1696 but in this case the array element bitsize is also zero,
1697 so nothing is gained.
1698 And we used to check the TYPE_LENGTH of the target type against
1699 the supplied array element bitsize.
1700 gcc causes a mismatch for `pointer to array of object',
1701 since the sdb directives it uses do not have a way of
1702 specifying the bitsize, but it does no harm (the
1703 TYPE_LENGTH should be correct) and we should be able to
1704 ignore the erroneous bitsize from the auxiliary entry safely.
1705 dbx seems to ignore it too. */
1711 /* Volatile -- currently ignored */
1715 /* Const -- currently ignored */
1719 complain (&unknown_type_qual_complaint
, tq
);
1725 /* Parse a procedure descriptor record PR. Note that the procedure is
1726 parsed _after_ the local symbols, now we just insert the extra
1727 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1728 already been placed in the procedure's main block. Note also that
1729 images that have been partially stripped (ld -x) have been deprived
1730 of local symbols, and we have to cope with them here. FIRST_OFF is
1731 the offset of the first procedure for this FDR; we adjust the
1732 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1733 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1734 in question, or NULL to use top_stack->cur_block. */
1736 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, unsigned long,
1737 struct partial_symtab
*));
1740 parse_procedure (pr
, search_symtab
, first_off
, pst
)
1742 struct symtab
*search_symtab
;
1743 unsigned long first_off
;
1744 struct partial_symtab
*pst
;
1746 struct symbol
*s
, *i
;
1748 struct mips_extra_func_info
*e
;
1751 /* Simple rule to find files linked "-x" */
1752 if (cur_fdr
->rss
== -1)
1756 /* Static procedure at address pr->adr. Sigh. */
1757 /* FIXME-32x64. assuming pr->adr fits in long. */
1758 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1766 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1767 ((char *) debug_info
->external_ext
1769 * debug_swap
->external_ext_size
)),
1771 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1779 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1780 ((char *) debug_info
->external_sym
1781 + ((cur_fdr
->isymBase
+ pr
->isym
)
1782 * debug_swap
->external_sym_size
)),
1784 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1787 if (search_symtab
!= NULL
)
1790 /* This loses both in the case mentioned (want a static, find a global),
1791 but also if we are looking up a non-mangled name which happens to
1792 match the name of a mangled function. */
1793 /* We have to save the cur_fdr across the call to lookup_symbol.
1794 If the pdr is for a static function and if a global function with
1795 the same name exists, lookup_symbol will eventually read in the symtab
1796 for the global function and clobber cur_fdr. */
1797 FDR
*save_cur_fdr
= cur_fdr
;
1798 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1799 cur_fdr
= save_cur_fdr
;
1803 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1809 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1810 VAR_NAMESPACE
, LOC_BLOCK
);
1814 b
= SYMBOL_BLOCK_VALUE (s
);
1818 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1822 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1823 s
= new_symbol (sh_name
);
1824 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1825 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1826 /* Donno its type, hope int is ok */
1827 SYMBOL_TYPE (s
) = lookup_function_type (builtin_type_int
);
1828 add_symbol (s
, top_stack
->cur_block
);
1829 /* Wont have symbols for this one */
1831 SYMBOL_BLOCK_VALUE (s
) = b
;
1832 BLOCK_FUNCTION (b
) = s
;
1833 BLOCK_START (b
) = pr
->adr
;
1834 /* BOUND used to be the end of procedure's text, but the
1835 argument is no longer passed in. */
1836 BLOCK_END (b
) = bound
;
1837 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1838 add_block (b
, top_stack
->cur_st
);
1842 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1846 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1848 e
->pdr
.isym
= (long) s
;
1849 e
->pdr
.adr
+= pst
->textlow
- first_off
;
1851 /* Correct incorrect setjmp procedure descriptor from the library
1852 to make backtrace through setjmp work. */
1853 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1855 complain (&bad_setjmp_pdr_complaint
, 0);
1856 e
->pdr
.pcreg
= RA_REGNUM
;
1857 e
->pdr
.regmask
= 0x80000000;
1858 e
->pdr
.regoffset
= -4;
1863 /* Relocate the extra function info pointed to by the symbol table. */
1866 ecoff_relocate_efi (sym
, delta
)
1870 struct mips_extra_func_info
*e
;
1872 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
1874 e
->pdr
.adr
+= delta
;
1877 /* Parse the external symbol ES. Just call parse_symbol() after
1878 making sure we know where the aux are for it.
1879 BIGEND says whether aux entries are big-endian or little-endian.
1881 This routine clobbers top_stack->cur_block and ->cur_st. */
1883 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
1886 parse_external (es
, bigend
, section_offsets
)
1889 struct section_offsets
*section_offsets
;
1893 if (es
->ifd
!= ifdNil
)
1896 cur_fdr
= debug_info
->fdr
+ cur_fd
;
1897 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
1901 cur_fdr
= debug_info
->fdr
;
1905 /* Reading .o files */
1906 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scNil
)
1909 switch (es
->asym
.st
)
1912 /* These are generated for static symbols in .o files,
1933 /* FIXME: Turn this into a complaint? */
1935 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
1936 what
, debug_info
->ssext
+ es
->asym
.iss
,
1937 fdr_name (cur_fdr
));
1941 switch (es
->asym
.st
)
1945 /* There is no need to parse the external procedure symbols.
1946 If they are from objects compiled without -g, their index will
1947 be indexNil, and the symbol definition from the minimal symbol
1948 is preferrable (yielding a function returning int instead of int).
1949 If the index points to a local procedure symbol, the local
1950 symbol already provides the correct type.
1951 Note that the index of the external procedure symbol points
1952 to the local procedure symbol in the local symbol table, and
1953 _not_ to the auxiliary symbol info. */
1957 /* Global common symbols are resolved by the runtime loader,
1959 if (es
->asym
.sc
== scCommon
|| es
->asym
.sc
== scSCommon
)
1962 /* Note that the case of a symbol with indexNil must be handled
1963 anyways by parse_symbol(). */
1964 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
1971 /* Parse the line number info for file descriptor FH into
1972 GDB's linetable LT. MIPS' encoding requires a little bit
1973 of magic to get things out. Note also that MIPS' line
1974 numbers can go back and forth, apparently we can live
1975 with that and do not need to reorder our linetables */
1977 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
1978 struct partial_symtab
*));
1981 parse_lines (fh
, pr
, lt
, maxlines
, pst
)
1984 struct linetable
*lt
;
1986 struct partial_symtab
*pst
;
1988 unsigned char *base
;
1990 int delta
, count
, lineno
= 0;
1991 unsigned long first_off
= pr
->adr
;
1993 if (fh
->cbLine
== 0)
1996 /* Scan by procedure descriptors */
1998 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2002 unsigned char *halt
;
2004 /* No code for this one */
2005 if (pr
->iline
== ilineNil
||
2006 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2009 /* Determine start and end address of compressed line bytes for
2011 base
= debug_info
->line
+ fh
->cbLineOffset
;
2012 if (j
!= (fh
->cpd
- 1))
2013 halt
= base
+ pr
[1].cbLineOffset
;
2015 halt
= base
+ fh
->cbLine
;
2016 base
+= pr
->cbLineOffset
;
2018 adr
= pst
->textlow
+ pr
->adr
- first_off
;
2020 l
= adr
>> 2; /* in words */
2021 for (lineno
= pr
->lnLow
; base
< halt
; )
2023 count
= *base
& 0x0f;
2024 delta
= *base
++ >> 4;
2029 delta
= (base
[0] << 8) | base
[1];
2030 if (delta
>= 0x8000)
2034 lineno
+= delta
; /* first delta is 0 */
2036 /* Complain if the line table overflows. Could happen
2037 with corrupt binaries. */
2038 if (lt
->nitems
>= maxlines
)
2040 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2043 k
= add_line (lt
, lineno
, l
, k
);
2049 /* Master parsing procedure for first-pass reading of file symbols
2050 into a partial_symtab. */
2053 parse_partial_symbols (objfile
, section_offsets
)
2054 struct objfile
*objfile
;
2055 struct section_offsets
*section_offsets
;
2057 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2058 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2059 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2060 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2061 = debug_swap
->swap_ext_in
;
2062 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2063 = debug_swap
->swap_sym_in
;
2064 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2065 = debug_swap
->swap_rfd_in
;
2067 HDRR
*hdr
= &debug_info
->symbolic_header
;
2068 /* Running pointers */
2073 register EXTR
*ext_in
;
2076 struct partial_symtab
*pst
;
2078 int past_first_source_file
= 0;
2080 /* List of current psymtab's include files */
2081 char **psymtab_include_list
;
2082 int includes_allocated
;
2085 struct pst_map
*fdr_to_pst
;
2086 /* Index within current psymtab dependency list */
2087 struct partial_symtab
**dependency_list
;
2088 int dependencies_used
, dependencies_allocated
;
2089 struct cleanup
*old_chain
;
2091 enum language prev_language
;
2092 asection
*text_sect
;
2093 int relocatable
= 0;
2095 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2096 the shared libraries are prelinked at a high memory address.
2097 We have to adjust the start address of the object file for this case,
2098 by setting it to the start address of the first procedure in the file.
2099 But we should do no adjustments if we are debugging a .o file, where
2100 the text section (and fh->adr) really starts at zero. */
2101 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2102 if (text_sect
!= NULL
2103 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2106 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2107 sizeof (EXTR
) * hdr
->iextMax
);
2109 includes_allocated
= 30;
2111 psymtab_include_list
= (char **) alloca (includes_allocated
*
2113 next_symbol_text_func
= mdebug_next_symbol_text
;
2115 dependencies_allocated
= 30;
2116 dependencies_used
= 0;
2118 (struct partial_symtab
**) alloca (dependencies_allocated
*
2119 sizeof (struct partial_symtab
*));
2121 last_source_file
= NULL
;
2126 * Only parse the Local and External symbols, and the Relative FDR.
2127 * Fixup enough of the loader symtab to be able to use it.
2128 * Allocate space only for the file's portions we need to
2133 max_glevel
= MIN_GLEVEL
;
2135 /* Allocate the map FDR -> PST.
2136 Minor hack: -O3 images might claim some global data belongs
2137 to FDR -1. We`ll go along with that */
2138 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2139 old_chain
= make_cleanup (free
, fdr_to_pst
);
2142 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2143 fdr_to_pst
[-1].pst
= pst
;
2147 /* Allocate the global pending list. */
2149 ((struct mdebug_pending
**)
2150 obstack_alloc (&objfile
->psymbol_obstack
,
2151 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2152 memset ((PTR
) pending_list
, 0,
2153 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2155 /* Pass 0 over external syms: swap them in. */
2156 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2157 make_cleanup (free
, ext_block
);
2159 ext_out
= (char *) debug_info
->external_ext
;
2160 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2162 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2163 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2165 /* Pass 1 over external syms: Presize and partition the list */
2167 ext_in_end
= ext_in
+ hdr
->iextMax
;
2168 for (; ext_in
< ext_in_end
; ext_in
++)
2170 /* See calls to complain below. */
2171 if (ext_in
->ifd
>= -1
2172 && ext_in
->ifd
< hdr
->ifdMax
2173 && ext_in
->asym
.iss
>= 0
2174 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2175 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2178 /* Pass 1.5 over files: partition out global symbol space */
2180 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2182 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2183 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2184 fdr_to_pst
[f_idx
].n_globals
= 0;
2187 /* Pass 2 over external syms: fill in external symbols */
2189 ext_in_end
= ext_in
+ hdr
->iextMax
;
2190 for (; ext_in
< ext_in_end
; ext_in
++)
2192 enum minimal_symbol_type ms_type
= mst_text
;
2193 CORE_ADDR svalue
= ext_in
->asym
.value
;
2195 /* The Irix 5 native tools seem to sometimes generate bogus
2196 external symbols. */
2197 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2199 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2202 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2204 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2209 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2210 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2212 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scNil
)
2215 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2216 switch (ext_in
->asym
.st
)
2219 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2222 ms_type
= mst_file_text
;
2223 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2226 if (ext_in
->asym
.sc
== scCommon
|| ext_in
->asym
.sc
== scSCommon
)
2228 /* The value of a common symbol is its size, not its address.
2232 else if (ext_in
->asym
.sc
== scData
2233 || ext_in
->asym
.sc
== scSData
2234 || ext_in
->asym
.sc
== scRData
2235 || ext_in
->asym
.sc
== scPData
2236 || ext_in
->asym
.sc
== scXData
)
2239 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2244 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2248 if (ext_in
->asym
.sc
== scAbs
)
2250 else if (ext_in
->asym
.sc
== scText
2251 || ext_in
->asym
.sc
== scInit
2252 || ext_in
->asym
.sc
== scFini
)
2254 ms_type
= mst_file_text
;
2255 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2257 else if (ext_in
->asym
.sc
== scData
2258 || ext_in
->asym
.sc
== scSData
2259 || ext_in
->asym
.sc
== scRData
2260 || ext_in
->asym
.sc
== scPData
2261 || ext_in
->asym
.sc
== scXData
)
2263 ms_type
= mst_file_data
;
2264 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2268 ms_type
= mst_file_bss
;
2269 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2273 /* The alpha has the section start addresses in stLocal symbols
2274 whose name starts with a `.'. Skip those but complain for all
2275 other stLocal symbols. */
2280 ms_type
= mst_unknown
;
2281 complain (&unknown_ext_complaint
, name
);
2283 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2286 /* Pass 3 over files, over local syms: fill in static symbols */
2287 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2289 struct partial_symtab
*save_pst
;
2293 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2297 fdr_to_pst
[f_idx
].pst
= NULL
;
2301 /* Determine the start address for this object file from the
2302 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2306 if (relocatable
|| textlow
!= 0)
2307 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2311 pst
= start_psymtab_common (objfile
, section_offsets
,
2314 objfile
->global_psymbols
.next
,
2315 objfile
->static_psymbols
.next
);
2316 pst
->read_symtab_private
= ((char *)
2317 obstack_alloc (&objfile
->psymbol_obstack
,
2318 sizeof (struct symloc
)));
2319 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2322 FDR_IDX (pst
) = f_idx
;
2323 CUR_BFD (pst
) = cur_bfd
;
2324 DEBUG_SWAP (pst
) = debug_swap
;
2325 DEBUG_INFO (pst
) = debug_info
;
2326 PENDING_LIST (pst
) = pending_list
;
2328 /* The way to turn this into a symtab is to call... */
2329 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2331 /* Set up language for the pst.
2332 The language from the FDR is used if it is unambigious (e.g. cfront
2333 with native cc and g++ will set the language to C).
2334 Otherwise we have to deduce the language from the filename.
2335 Native ecoff has every header file in a separate FDR, so
2336 deduce_language_from_filename will return language_unknown for
2337 a header file, which is not what we want.
2338 But the FDRs for the header files are after the FDR for the source
2339 file, so we can assign the language of the source file to the
2340 following header files. Then we save the language in the private
2341 pst data so that we can reuse it when building symtabs. */
2342 prev_language
= psymtab_language
;
2346 case langCplusplusV2
:
2347 psymtab_language
= language_cplus
;
2350 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2353 if (psymtab_language
== language_unknown
)
2354 psymtab_language
= prev_language
;
2355 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2357 pst
->texthigh
= pst
->textlow
;
2359 /* For stabs-in-ecoff files, the second symbol must be @stab.
2360 This symbol is emitted by mips-tfile to signal that the
2361 current object file uses encapsulated stabs instead of mips
2362 ecoff for local symbols. (It is the second symbol because
2363 the first symbol is the stFile used to signal the start of a
2365 processing_gcc_compilation
= 0;
2368 (*swap_sym_in
) (cur_bfd
,
2369 ((char *) debug_info
->external_sym
2370 + (fh
->isymBase
+ 1) * external_sym_size
),
2372 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2373 processing_gcc_compilation
= 2;
2376 if (processing_gcc_compilation
!= 0)
2378 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2383 (*swap_sym_in
) (cur_bfd
,
2384 (((char *) debug_info
->external_sym
)
2385 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2387 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2388 if (!ECOFF_IS_STAB (&sh
))
2390 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2395 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2396 if (sh
.st
== stStaticProc
)
2398 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2399 prim_record_minimal_symbol_and_info (namestring
,
2406 procaddr
= sh
.value
;
2408 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2409 (debug_info
->external_aux
2412 (*swap_sym_in
) (cur_bfd
,
2413 ((char *) debug_info
->external_sym
2414 + ((fh
->isymBase
+ isym
- 1)
2415 * external_sym_size
)),
2419 long high
= procaddr
+ sh
.value
;
2421 /* Kludge for Irix 5.2 zero fh->adr. */
2423 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2424 pst
->textlow
= procaddr
;
2425 if (high
> pst
->texthigh
)
2426 pst
->texthigh
= high
;
2429 else if (sh
.st
== stStatic
)
2443 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2444 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2445 prim_record_minimal_symbol_and_info (namestring
,
2454 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2455 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2456 prim_record_minimal_symbol_and_info (namestring
,
2467 #define SET_NAMESTRING() \
2468 namestring = debug_info->ss + fh->issBase + sh.iss
2469 #define CUR_SYMBOL_TYPE type_code
2470 #define CUR_SYMBOL_VALUE sh.value
2471 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2473 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2474 #define HANDLE_RBRAC(val) \
2475 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2476 #include "partial-stab.h"
2481 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2484 enum address_class
class;
2486 (*swap_sym_in
) (cur_bfd
,
2487 ((char *) debug_info
->external_sym
2488 + ((fh
->isymBase
+ cur_sdx
)
2489 * external_sym_size
)),
2492 if (ECOFF_IS_STAB (&sh
))
2498 /* Non absolute static symbols go into the minimal table. */
2499 if (sh
.sc
== scUndefined
|| sh
.sc
== scNil
2500 || (sh
.index
== indexNil
2501 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2503 /* FIXME, premature? */
2508 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2513 /* The value of a stEnd symbol is the displacement from the
2514 corresponding start symbol value, do not relocate it. */
2516 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2523 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2527 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2538 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2539 mst_file_text
, NULL
,
2540 SECT_OFF_TEXT
, objfile
);
2545 /* Usually there is a local and a global stProc symbol
2546 for a function. This means that the function name
2547 has already been entered into the mimimal symbol table
2548 while processing the global symbols in pass 2 above.
2549 One notable exception is the PROGRAM name from
2550 f77 compiled executables, it is only put out as
2551 local stProc symbol, and a global MAIN__ stProc symbol
2552 points to it. It doesn't matter though, as gdb is
2553 still able to find the PROGRAM name via the partial
2554 symbol table, and the MAIN__ symbol via the minimal
2556 if (sh
.st
== stProc
)
2557 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2558 VAR_NAMESPACE
, LOC_BLOCK
,
2559 objfile
->global_psymbols
,
2560 sh
.value
, psymtab_language
, objfile
);
2562 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2563 VAR_NAMESPACE
, LOC_BLOCK
,
2564 objfile
->static_psymbols
,
2565 sh
.value
, psymtab_language
, objfile
);
2567 /* Skip over procedure to next one. */
2568 if (sh
.index
>= hdr
->iauxMax
)
2570 /* Should not happen, but does when cross-compiling
2571 with the MIPS compiler. FIXME -- pull later. */
2572 complain (&index_complaint
, name
);
2573 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2576 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2577 (debug_info
->external_aux
2580 procaddr
= sh
.value
;
2582 if (new_sdx
<= cur_sdx
)
2584 /* This should not happen either... FIXME. */
2585 complain (&aux_index_complaint
, name
);
2586 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2590 (*swap_sym_in
) (cur_bfd
,
2591 ((char *) debug_info
->external_sym
2592 + ((fh
->isymBase
+ cur_sdx
- 1)
2593 * external_sym_size
)),
2598 /* Kludge for Irix 5.2 zero fh->adr. */
2600 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2601 pst
->textlow
= procaddr
;
2603 high
= procaddr
+ sh
.value
;
2604 if (high
> pst
->texthigh
)
2605 pst
->texthigh
= high
;
2608 case stStatic
: /* Variable */
2613 || sh
.sc
== scXData
)
2614 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2615 mst_file_data
, NULL
,
2619 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2626 case stIndirect
:/* Irix5 forward declaration */
2627 /* Skip forward declarations from Irix5 cc */
2630 case stTypedef
:/* Typedef */
2631 /* Skip typedefs for forward declarations and opaque
2632 structs from alpha and mips cc. */
2633 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2635 class = LOC_TYPEDEF
;
2638 case stConstant
: /* Constant decl */
2645 case stBlock
: /* { }, str, un, enum*/
2646 /* Do not create a partial symbol for cc unnamed aggregates
2647 and gcc empty aggregates. */
2648 if ((sh
.sc
== scInfo
2649 || sh
.sc
== scCommon
|| sh
.sc
== scSCommon
)
2651 && sh
.index
!= cur_sdx
+ 2)
2653 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2654 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2655 objfile
->static_psymbols
,
2657 psymtab_language
, objfile
);
2659 handle_psymbol_enumerators (objfile
, fh
, sh
.st
);
2661 /* Skip over the block */
2663 if (new_sdx
<= cur_sdx
)
2665 /* This happens with the Ultrix kernel. */
2666 complain (&block_index_complaint
, name
);
2667 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2672 case stFile
: /* File headers */
2673 case stLabel
: /* Labels */
2674 case stEnd
: /* Ends of files */
2677 case stLocal
: /* Local variables */
2678 /* Normally these are skipped because we skip over
2679 all blocks we see. However, these can occur
2680 as visible symbols in a .h file that contains code. */
2684 /* Both complaints are valid: one gives symbol name,
2685 the other the offending symbol type. */
2686 complain (&unknown_sym_complaint
, name
);
2687 complain (&unknown_st_complaint
, sh
.st
);
2691 /* Use this gdb symbol */
2692 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2693 VAR_NAMESPACE
, class,
2694 objfile
->static_psymbols
, sh
.value
,
2695 psymtab_language
, objfile
);
2697 cur_sdx
++; /* Go to next file symbol */
2700 /* Now do enter the external symbols. */
2701 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2702 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2703 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2704 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2705 for (; --cur_sdx
>= 0; ext_ptr
++)
2707 enum address_class
class;
2712 if (ext_ptr
->ifd
!= f_idx
)
2714 psh
= &ext_ptr
->asym
;
2716 /* Do not add undefined symbols to the partial symbol table. */
2717 if (psh
->sc
== scUndefined
|| psh
->sc
== scNil
)
2720 svalue
= psh
->value
;
2724 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2731 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2735 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2742 /* These are generated for static symbols in .o files,
2747 /* External procedure symbols have been entered
2748 into the minimal symbol table in pass 2 above.
2749 Ignore them, as parse_external will ignore them too. */
2755 complain (&unknown_ext_complaint
,
2756 debug_info
->ssext
+ psh
->iss
);
2757 /* Fall through, pretend it's global. */
2759 /* Global common symbols are resolved by the runtime loader,
2761 if (psh
->sc
== scCommon
|| psh
->sc
== scSCommon
)
2767 name
= debug_info
->ssext
+ psh
->iss
;
2768 ADD_PSYMBOL_ADDR_TO_LIST (name
, strlen (name
),
2769 VAR_NAMESPACE
, class,
2770 objfile
->global_psymbols
,
2772 psymtab_language
, objfile
);
2776 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2777 empty and put on the free list. */
2778 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2779 psymtab_include_list
, includes_used
,
2780 -1, save_pst
->texthigh
,
2781 dependency_list
, dependencies_used
);
2782 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2783 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2785 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2786 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2789 /* The objfile has its functions reordered if this partial symbol
2790 table overlaps any other partial symbol table.
2791 We cannot assume a reordered objfile if a partial symbol table
2792 is contained within another partial symbol table, as partial symbol
2793 tables for include files with executable code are contained
2794 within the partial symbol table for the including source file,
2795 and we do not want to flag the objfile reordered for these cases.
2797 This strategy works well for Irix-5.2 shared libraries, but we
2798 might have to use a more elaborate (and slower) algorithm for
2800 save_pst
= fdr_to_pst
[f_idx
].pst
;
2801 if (save_pst
!= NULL
2802 && save_pst
->textlow
!= 0
2803 && !(objfile
->flags
& OBJF_REORDERED
))
2805 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
2808 && save_pst
->textlow
>= pst
->textlow
2809 && save_pst
->textlow
< pst
->texthigh
2810 && save_pst
->texthigh
> pst
->texthigh
)
2812 objfile
->flags
|= OBJF_REORDERED
;
2819 /* Now scan the FDRs for dependencies */
2820 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2822 fh
= f_idx
+ debug_info
->fdr
;
2823 pst
= fdr_to_pst
[f_idx
].pst
;
2825 if (pst
== (struct partial_symtab
*)NULL
)
2828 /* This should catch stabs-in-ecoff. */
2832 /* Skip the first file indirect entry as it is a self dependency
2833 for source files or a reverse .h -> .c dependency for header files. */
2834 pst
->number_of_dependencies
= 0;
2836 ((struct partial_symtab
**)
2837 obstack_alloc (&objfile
->psymbol_obstack
,
2839 * sizeof (struct partial_symtab
*))));
2840 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
2844 (*swap_rfd_in
) (cur_bfd
,
2845 ((char *) debug_info
->external_rfd
2846 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
2848 if (rh
< 0 || rh
>= hdr
->ifdMax
)
2850 complain (&bad_file_number_complaint
, rh
);
2854 /* Skip self dependencies of header files. */
2858 /* Do not add to dependeny list if psymtab was empty. */
2859 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
2861 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
2865 /* Remove the dummy psymtab created for -O3 images above, if it is
2866 still empty, to enable the detection of stripped executables. */
2867 if (objfile
->psymtabs
->next
== NULL
2868 && objfile
->psymtabs
->number_of_dependencies
== 0
2869 && objfile
->psymtabs
->n_global_syms
== 0
2870 && objfile
->psymtabs
->n_static_syms
== 0)
2871 objfile
->psymtabs
= NULL
;
2872 do_cleanups (old_chain
);
2875 /* If the current psymbol has an enumerated type, we need to add
2876 all the the enum constants to the partial symbol table. */
2879 handle_psymbol_enumerators (objfile
, fh
, stype
)
2880 struct objfile
*objfile
;
2884 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2885 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2886 = debug_swap
->swap_sym_in
;
2887 char *ext_sym
= ((char *) debug_info
->external_sym
2888 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
2898 /* It is an enumerated type if the next symbol entry is a stMember
2899 and its auxiliary index is indexNil or its auxiliary entry
2900 is a plain btNil or btVoid. */
2901 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
2902 if (sh
.st
!= stMember
)
2905 if (sh
.index
== indexNil
)
2907 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
2908 &(debug_info
->external_aux
2909 + fh
->iauxBase
+ sh
.index
)->a_ti
,
2911 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
2923 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
2924 if (sh
.st
!= stMember
)
2926 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
2928 /* Note that the value doesn't matter for enum constants
2929 in psymtabs, just in symtabs. */
2930 ADD_PSYMBOL_TO_LIST (name
, strlen (name
),
2931 VAR_NAMESPACE
, LOC_CONST
,
2932 objfile
->static_psymbols
, 0,
2933 psymtab_language
, objfile
);
2934 ext_sym
+= external_sym_size
;
2939 mdebug_next_symbol_text ()
2944 (*debug_swap
->swap_sym_in
) (cur_bfd
,
2945 ((char *) debug_info
->external_sym
2946 + ((cur_fdr
->isymBase
+ cur_sdx
)
2947 * debug_swap
->external_sym_size
)),
2949 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
2952 /* Ancillary function to psymtab_to_symtab(). Does all the work
2953 for turning the partial symtab PST into a symtab, recurring
2954 first on all dependent psymtabs. The argument FILENAME is
2955 only passed so we can see in debug stack traces what file
2958 This function has a split personality, based on whether the
2959 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
2960 The flow of control and even the memory allocation differs. FIXME. */
2963 psymtab_to_symtab_1 (pst
, filename
)
2964 struct partial_symtab
*pst
;
2967 bfd_size_type external_sym_size
;
2968 bfd_size_type external_pdr_size
;
2969 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
2970 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
2974 struct linetable
*lines
;
2980 /* Read in all partial symbtabs on which this one is dependent.
2981 NOTE that we do have circular dependencies, sigh. We solved
2982 that by setting pst->readin before this point. */
2984 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
2985 if (!pst
->dependencies
[i
]->readin
)
2987 /* Inform about additional files to be read in. */
2990 fputs_filtered (" ", gdb_stdout
);
2992 fputs_filtered ("and ", gdb_stdout
);
2994 printf_filtered ("%s...",
2995 pst
->dependencies
[i
]->filename
);
2996 wrap_here (""); /* Flush output */
2997 gdb_flush (gdb_stdout
);
2999 /* We only pass the filename for debug purposes */
3000 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3001 pst
->dependencies
[i
]->filename
);
3004 /* Do nothing if this is a dummy psymtab. */
3006 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3007 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3010 /* Now read the symbols for this symtab */
3012 cur_bfd
= CUR_BFD (pst
);
3013 debug_swap
= DEBUG_SWAP (pst
);
3014 debug_info
= DEBUG_INFO (pst
);
3015 pending_list
= PENDING_LIST (pst
);
3016 external_sym_size
= debug_swap
->external_sym_size
;
3017 external_pdr_size
= debug_swap
->external_pdr_size
;
3018 swap_sym_in
= debug_swap
->swap_sym_in
;
3019 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3020 current_objfile
= pst
->objfile
;
3021 cur_fd
= FDR_IDX (pst
);
3022 fh
= ((cur_fd
== -1)
3024 : debug_info
->fdr
+ cur_fd
);
3027 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3028 processing_gcc_compilation
= 0;
3029 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3033 (*swap_sym_in
) (cur_bfd
,
3034 ((char *) debug_info
->external_sym
3035 + (fh
->isymBase
+ 1) * external_sym_size
),
3037 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3040 /* We indicate that this is a GCC compilation so that certain
3041 features will be enabled in stabsread/dbxread. */
3042 processing_gcc_compilation
= 2;
3046 if (processing_gcc_compilation
!= 0)
3051 unsigned long first_off
= 0;
3053 /* This symbol table contains stabs-in-ecoff entries. */
3055 /* Parse local symbols first */
3057 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3059 current_objfile
= NULL
;
3062 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3068 (*swap_sym_in
) (cur_bfd
,
3069 (((char *) debug_info
->external_sym
)
3070 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3072 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3074 if (ECOFF_IS_STAB (&sh
))
3076 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3078 /* We should never get non N_STAB symbols here, but they
3079 should be harmless, so keep process_one_symbol from
3080 complaining about them. */
3081 if (type_code
& N_STAB
)
3083 process_one_symbol (type_code
, 0, valu
, name
,
3084 pst
->section_offsets
, pst
->objfile
);
3086 if (type_code
== N_FUN
)
3088 /* Make up special symbol to contain
3089 procedure specific info */
3090 struct mips_extra_func_info
*e
=
3091 ((struct mips_extra_func_info
*)
3092 obstack_alloc (¤t_objfile
->symbol_obstack
,
3093 sizeof (struct mips_extra_func_info
)));
3094 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3095 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3096 SYMBOL_CLASS (s
) = LOC_CONST
;
3097 SYMBOL_TYPE (s
) = builtin_type_void
;
3098 SYMBOL_VALUE (s
) = (long) e
;
3099 add_symbol_to_list (s
, &local_symbols
);
3102 else if (sh
.st
== stLabel
)
3104 if (sh
.index
== indexNil
)
3106 /* This is what the gcc2_compiled and __gnu_compiled_*
3107 show up as. So don't complain. */
3111 /* Handle encoded stab line number. */
3112 record_line (current_subfile
, sh
.index
, valu
);
3114 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3115 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3116 /* These are generated by gcc-2.x, do not complain */
3119 complain (&stab_unknown_complaint
, name
);
3121 st
= end_symtab (pst
->texthigh
, 0, 0, pst
->objfile
, SECT_OFF_TEXT
);
3124 /* Sort the symbol table now, we are done adding symbols to it.
3125 We must do this before parse_procedure calls lookup_symbol. */
3126 sort_symtab_syms (st
);
3128 /* There used to be a call to sort_blocks here, but this should not
3129 be necessary for stabs symtabs. And as sort_blocks modifies the
3130 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3131 it did the wrong thing if the first procedure in a file was
3132 generated via asm statements. */
3134 /* Fill in procedure info next. */
3136 pdr_ptr
= ((char *) debug_info
->external_pdr
3137 + fh
->ipdFirst
* external_pdr_size
);
3138 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3139 for (; pdr_ptr
< pdr_end
; pdr_ptr
+= external_pdr_size
)
3143 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, &pr
);
3149 parse_procedure (&pr
, st
, first_off
, pst
);
3154 /* This symbol table contains ordinary ecoff entries. */
3156 /* FIXME: doesn't use pst->section_offsets. */
3162 /* How many symbols will we need */
3163 /* FIXME, this does not count enum values. */
3164 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3168 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3172 f_max
+= fh
->csym
+ fh
->cpd
;
3173 maxlines
= 2 * fh
->cline
;
3174 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3176 /* The proper language was already determined when building
3177 the psymtab, use it. */
3178 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3181 psymtab_language
= st
->language
;
3183 lines
= LINETABLE (st
);
3185 /* Get a new lexical context */
3187 push_parse_stack ();
3188 top_stack
->cur_st
= st
;
3189 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3191 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3192 BLOCK_END (top_stack
->cur_block
) = 0;
3193 top_stack
->blocktype
= stFile
;
3194 top_stack
->maxsyms
= 2 * f_max
;
3195 top_stack
->cur_type
= 0;
3196 top_stack
->procadr
= 0;
3197 top_stack
->numargs
= 0;
3204 /* Parse local symbols first */
3205 sym_ptr
= ((char *) debug_info
->external_sym
3206 + fh
->isymBase
* external_sym_size
);
3207 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3208 while (sym_ptr
< sym_end
)
3213 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3214 c
= parse_symbol (&sh
,
3215 debug_info
->external_aux
+ fh
->iauxBase
,
3216 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3217 sym_ptr
+= c
* external_sym_size
;
3220 /* Linenumbers. At the end, check if we can save memory.
3221 parse_lines has to look ahead an arbitrary number of PDR
3222 structures, so we swap them all first. */
3226 struct cleanup
*old_chain
;
3232 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3234 old_chain
= make_cleanup (free
, pr_block
);
3236 pdr_ptr
= ((char *) debug_info
->external_pdr
3237 + fh
->ipdFirst
* external_pdr_size
);
3238 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3242 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3243 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3245 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
);
3246 if (lines
->nitems
< fh
->cline
)
3247 lines
= shrink_linetable (lines
);
3249 /* Fill in procedure info next. */
3251 pdr_in_end
= pdr_in
+ fh
->cpd
;
3252 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3253 parse_procedure (pdr_in
, 0, pr_block
->adr
, pst
);
3255 do_cleanups (old_chain
);
3259 LINETABLE (st
) = lines
;
3261 /* .. and our share of externals.
3262 XXX use the global list to speed up things here. how?
3263 FIXME, Maybe quit once we have found the right number of ext's? */
3264 top_stack
->cur_st
= st
;
3265 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3267 top_stack
->blocktype
= stFile
;
3269 = (debug_info
->symbolic_header
.isymMax
3270 + debug_info
->symbolic_header
.ipdMax
3271 + debug_info
->symbolic_header
.iextMax
);
3273 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3274 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3275 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3277 /* If there are undefined symbols, tell the user.
3278 The alpha has an undefined symbol for every symbol that is
3279 from a shared library, so tell the user only if verbose is on. */
3280 if (info_verbose
&& n_undef_symbols
)
3282 printf_filtered ("File %s contains %d unresolved references:",
3283 st
->filename
, n_undef_symbols
);
3284 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3285 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3286 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3293 /* Sort the symbol table now, we are done adding symbols to it.*/
3294 sort_symtab_syms (st
);
3299 /* Now link the psymtab and the symtab. */
3302 current_objfile
= NULL
;
3305 /* Ancillary parsing procedures. */
3307 /* Return 1 if the symbol pointed to by SH has a cross reference
3308 to an opaque aggregate type, else 0. */
3311 has_opaque_xref (fh
, sh
)
3320 if (sh
->index
== indexNil
)
3323 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3324 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3325 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3329 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3330 if (rn
->rfd
== 0xfff)
3331 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3339 /* Lookup the type at relative index RN. Return it in TPP
3340 if found and in any event come up with its name PNAME.
3341 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3342 Return value says how many aux symbols we ate. */
3345 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3349 enum type_code type_code
; /* Use to alloc new type if none is found. */
3361 struct mdebug_pending
*pend
;
3363 *tpp
= (struct type
*)NULL
;
3365 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3367 /* Escape index means 'the next one' */
3368 if (rn
->rfd
== 0xfff)
3371 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3378 /* mips cc uses a rf of -1 for opaque struct definitions.
3379 Set TYPE_FLAG_STUB for these types so that check_stub_type will
3380 resolve them if the struct gets defined in another compilation unit. */
3383 *pname
= "<undefined>";
3384 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3385 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3389 /* mips cc uses an escaped rn->index of 0 for struct return types
3390 of procedures that were compiled without -g. These will always remain
3392 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3394 *pname
= "<undefined>";
3398 /* Find the relative file descriptor and the symbol in it. */
3399 fh
= get_rfd (fd
, rf
);
3400 xref_fd
= fh
- debug_info
->fdr
;
3402 if (rn
->index
>= fh
->csym
)
3404 /* File indirect entry is corrupt. */
3405 *pname
= "<illegal>";
3406 complain (&bad_rfd_entry_complaint
,
3407 sym_name
, xref_fd
, rn
->index
);
3411 /* If we have processed this symbol then we left a forwarding
3412 pointer to the type in the pending list. If not, we`ll put
3413 it in a list of pending types, to be processed later when
3414 the file will be. In any event, we collect the name for the
3417 esh
= ((char *) debug_info
->external_sym
3418 + ((fh
->isymBase
+ rn
->index
)
3419 * debug_swap
->external_sym_size
));
3420 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3422 /* Make sure that this type of cross reference can be handled. */
3423 if ((sh
.sc
!= scInfo
3424 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3425 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3426 && sh
.st
!= stEnum
))
3427 && (sh
.st
!= stBlock
|| (sh
.sc
!= scCommon
&& sh
.sc
!= scSCommon
)))
3429 /* File indirect entry is corrupt. */
3430 *pname
= "<illegal>";
3431 complain (&bad_rfd_entry_complaint
,
3432 sym_name
, xref_fd
, rn
->index
);
3436 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3438 pend
= is_pending_symbol (fh
, esh
);
3443 /* We have not yet seen this type. */
3445 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3449 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3451 a) forward declarations of structs/unions/enums which are not
3452 defined in this compilation unit.
3453 For these the type will be void. This is a bad design decision
3454 as cross referencing across compilation units is impossible
3455 due to the missing name.
3456 b) forward declarations of structs/unions/enums which are defined
3457 later in this file or in another file in the same compilation
3458 unit. Irix5 cc uses a stIndirect symbol for this.
3459 Simply cross reference those again to get the true type.
3460 The forward references are not entered in the pending list and
3461 in the symbol table. */
3463 (*debug_swap
->swap_tir_in
) (bigend
,
3464 &(debug_info
->external_aux
3465 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3467 if (tir
.tq0
!= tqNil
)
3468 complain (&illegal_forward_tq0_complaint
, sym_name
);
3472 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3474 *pname
= "<undefined>";
3481 (debug_info
->external_aux
3482 + fh
->iauxBase
+ sh
.index
+ 1),
3483 tpp
, type_code
, pname
,
3484 fh
->fBigendian
, sym_name
);
3488 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3489 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3495 else if (sh
.st
== stTypedef
)
3497 /* Parse the type for a normal typedef. This might recursively call
3498 cross_ref till we get a non typedef'ed type.
3499 FIXME: This is not correct behaviour, but gdb currently
3500 cannot handle typedefs without type copying. But type copying is
3501 impossible as we might have mutual forward references between
3502 two files and the copied type would not get filled in when
3503 we later parse its definition. */
3504 *tpp
= parse_type (xref_fd
,
3505 debug_info
->external_aux
+ fh
->iauxBase
,
3509 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3513 /* Cross reference to a struct/union/enum which is defined
3514 in another file in the same compilation unit but that file
3515 has not been parsed yet.
3516 Initialize the type only, it will be filled in when
3517 it's definition is parsed. */
3518 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3520 add_pending (fh
, esh
, *tpp
);
3523 /* We used one auxent normally, two if we got a "next one" rf. */
3528 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3529 keeping the symtab sorted */
3531 static struct symbol
*
3532 mylookup_symbol (name
, block
, namespace, class)
3534 register struct block
*block
;
3535 enum namespace namespace;
3536 enum address_class
class;
3538 register int bot
, top
, inc
;
3539 register struct symbol
*sym
;
3542 top
= BLOCK_NSYMS (block
);
3546 sym
= BLOCK_SYM (block
, bot
);
3547 if (SYMBOL_NAME (sym
)[0] == inc
3548 && SYMBOL_NAMESPACE (sym
) == namespace
3549 && SYMBOL_CLASS (sym
) == class
3550 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3554 block
= BLOCK_SUPERBLOCK (block
);
3556 return mylookup_symbol (name
, block
, namespace, class);
3561 /* Add a new symbol S to a block B.
3562 Infrequently, we will need to reallocate the block to make it bigger.
3563 We only detect this case when adding to top_stack->cur_block, since
3564 that's the only time we know how big the block is. FIXME. */
3571 int nsyms
= BLOCK_NSYMS (b
)++;
3572 struct block
*origb
;
3573 struct parse_stack
*stackp
;
3575 if (b
== top_stack
->cur_block
&&
3576 nsyms
>= top_stack
->maxsyms
)
3578 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3579 /* In this case shrink_block is actually grow_block, since
3580 BLOCK_NSYMS(b) is larger than its current size. */
3582 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3584 /* Now run through the stack replacing pointers to the
3585 original block. shrink_block has already done this
3586 for the blockvector and BLOCK_FUNCTION. */
3587 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3589 if (stackp
->cur_block
== origb
)
3591 stackp
->cur_block
= b
;
3592 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3596 BLOCK_SYM (b
, nsyms
) = s
;
3599 /* Add a new block B to a symtab S */
3606 struct blockvector
*bv
= BLOCKVECTOR (s
);
3608 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3609 (sizeof (struct blockvector
)
3610 + BLOCKVECTOR_NBLOCKS (bv
)
3611 * sizeof (bv
->block
)));
3612 if (bv
!= BLOCKVECTOR (s
))
3613 BLOCKVECTOR (s
) = bv
;
3615 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3618 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3619 MIPS' linenumber encoding might need more than one byte
3620 to describe it, LAST is used to detect these continuation lines.
3622 Combining lines with the same line number seems like a bad idea.
3623 E.g: There could be a line number entry with the same line number after the
3624 prologue and GDB should not ignore it (this is a better way to find
3625 a prologue than mips_skip_prologue).
3626 But due to the compressed line table format there are line number entries
3627 for the same line which are needed to bridge the gap to the next
3628 line number entry. These entries have a bogus address info with them
3629 and we are unable to tell them from intended duplicate line number
3631 This is another reason why -ggdb debugging format is preferable. */
3634 add_line (lt
, lineno
, adr
, last
)
3635 struct linetable
*lt
;
3640 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3641 Change them to something sensible. */
3645 last
= -2; /* make sure we record first line */
3647 if (last
== lineno
) /* skip continuation lines */
3650 lt
->item
[lt
->nitems
].line
= lineno
;
3651 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3655 /* Sorting and reordering procedures */
3657 /* Blocks with a smaller low bound should come first */
3660 compare_blocks (arg1
, arg2
)
3664 register int addr_diff
;
3665 struct block
**b1
= (struct block
**) arg1
;
3666 struct block
**b2
= (struct block
**) arg2
;
3668 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3670 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3674 /* Sort the blocks of a symtab S.
3675 Reorder the blocks in the blockvector by code-address,
3676 as required by some MI search routines */
3682 struct blockvector
*bv
= BLOCKVECTOR (s
);
3684 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3687 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3688 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3689 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3690 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3694 * This is very unfortunate: normally all functions are compiled in
3695 * the order they are found, but if the file is compiled -O3 things
3696 * are very different. It would be nice to find a reliable test
3697 * to detect -O3 images in advance.
3699 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3700 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3701 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3702 sizeof (struct block
*),
3706 register CORE_ADDR high
= 0;
3707 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3709 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3710 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3711 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3712 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3715 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3716 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3718 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3719 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3720 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3721 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3725 /* Constructor/restructor/destructor procedures */
3727 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3728 MAXSYMS and linenumbers MAXLINES we'll put in it */
3730 static struct symtab
*
3731 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3735 struct objfile
*objfile
;
3737 struct symtab
*s
= allocate_symtab (name
, objfile
);
3739 LINETABLE (s
) = new_linetable (maxlines
);
3741 /* All symtabs must have at least two blocks */
3742 BLOCKVECTOR (s
) = new_bvect (2);
3743 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3744 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3745 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3746 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3748 s
->free_code
= free_linetable
;
3753 /* Allocate a new partial_symtab NAME */
3755 static struct partial_symtab
*
3756 new_psymtab (name
, objfile
, section_offsets
)
3758 struct objfile
*objfile
;
3759 struct section_offsets
*section_offsets
;
3761 struct partial_symtab
*psymtab
;
3763 psymtab
= allocate_psymtab (name
, objfile
);
3764 psymtab
->section_offsets
= section_offsets
;
3766 /* Keep a backpointer to the file's symbols */
3768 psymtab
->read_symtab_private
= ((char *)
3769 obstack_alloc (&objfile
->psymbol_obstack
,
3770 sizeof (struct symloc
)));
3771 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
3772 CUR_BFD (psymtab
) = cur_bfd
;
3773 DEBUG_SWAP (psymtab
) = debug_swap
;
3774 DEBUG_INFO (psymtab
) = debug_info
;
3775 PENDING_LIST (psymtab
) = pending_list
;
3777 /* The way to turn this into a symtab is to call... */
3778 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
3783 /* Allocate a linetable array of the given SIZE. Since the struct
3784 already includes one item, we subtract one when calculating the
3785 proper size to allocate. */
3787 static struct linetable
*
3788 new_linetable (size
)
3791 struct linetable
*l
;
3793 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
3794 l
= (struct linetable
*) xmalloc (size
);
3799 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
3800 I am not so sure about the 3.4 ones.
3802 Since the struct linetable already includes one item, we subtract one when
3803 calculating the proper size to allocate. */
3805 static struct linetable
*
3806 shrink_linetable (lt
)
3807 struct linetable
*lt
;
3810 return (struct linetable
*) xrealloc ((PTR
) lt
,
3811 (sizeof (struct linetable
)
3813 * sizeof (lt
->item
))));
3816 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
3818 static struct blockvector
*
3822 struct blockvector
*bv
;
3825 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
3826 bv
= (struct blockvector
*) xzalloc (size
);
3828 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
3833 /* Allocate and zero a new block of MAXSYMS symbols */
3835 static struct block
*
3839 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
3841 return (struct block
*) xzalloc (size
);
3844 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
3845 Shrink_block can also be used by add_symbol to grow a block. */
3847 static struct block
*
3853 struct blockvector
*bv
= BLOCKVECTOR (s
);
3856 /* Just reallocate it and fix references to the old one */
3858 new = (struct block
*) xrealloc ((PTR
) b
,
3859 (sizeof (struct block
)
3860 + ((BLOCK_NSYMS (b
) - 1)
3861 * sizeof (struct symbol
*))));
3863 /* Should chase pointers to old one. Fortunately, that`s just
3864 the block`s function and inferior blocks */
3865 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
3866 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
3867 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
3868 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
3869 BLOCKVECTOR_BLOCK (bv
, i
) = new;
3870 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
3871 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
3875 /* Create a new symbol with printname NAME */
3877 static struct symbol
*
3881 struct symbol
*s
= ((struct symbol
*)
3882 obstack_alloc (¤t_objfile
->symbol_obstack
,
3883 sizeof (struct symbol
)));
3885 memset ((PTR
) s
, 0, sizeof (*s
));
3886 SYMBOL_NAME (s
) = name
;
3887 SYMBOL_LANGUAGE (s
) = psymtab_language
;
3888 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
3892 /* Create a new type with printname NAME */
3894 static struct type
*
3900 t
= alloc_type (current_objfile
);
3901 TYPE_NAME (t
) = name
;
3902 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
3906 /* Read ECOFF debugging information from a BFD section. This is
3907 called from elfread.c. It parses the section into a
3908 ecoff_debug_info struct, and then lets the rest of the file handle
3912 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
3913 struct objfile
*objfile
;
3914 const struct ecoff_debug_swap
*swap
;
3916 struct section_offsets
*section_offsets
;
3918 bfd
*abfd
= objfile
->obfd
;
3919 struct ecoff_debug_info
*info
;
3921 info
= ((struct ecoff_debug_info
*)
3922 obstack_alloc (&objfile
->psymbol_obstack
,
3923 sizeof (struct ecoff_debug_info
)));
3925 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
3926 error ("Error reading ECOFF debugging information: %s",
3927 bfd_errmsg (bfd_get_error ()));
3929 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
3933 /* Things used for calling functions in the inferior.
3934 These functions are exported to our companion
3935 mips-tdep.c file and are here because they play
3936 with the symbol-table explicitly. */
3938 /* Sigtramp: make sure we have all the necessary information
3939 about the signal trampoline code. Since the official code
3940 from MIPS does not do so, we make up that information ourselves.
3941 If they fix the library (unlikely) this code will neutralize itself. */
3943 /* FIXME: This function is called only by mips-tdep.c. It needs to be
3944 here because it calls functions defined in this file, but perhaps
3945 this could be handled in a better way. */
3952 struct block
*b
, *b0
= NULL
;
3954 sigtramp_address
= -1;
3956 /* We have to handle the following cases here:
3957 a) The Mips library has a sigtramp label within sigvec.
3958 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
3959 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
3962 b0
= SYMBOL_BLOCK_VALUE (s
);
3963 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
3967 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
3968 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
3971 /* But maybe this program uses its own version of sigvec */
3975 /* Did we or MIPSco fix the library ? */
3976 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
3978 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
3979 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
3983 sigtramp_address
= SYMBOL_VALUE (s
);
3984 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
3986 /* But what symtab does it live in ? */
3987 st
= find_pc_symtab (SYMBOL_VALUE (s
));
3990 * Ok, there goes the fix: turn it into a procedure, with all the
3991 * needed info. Note we make it a nested procedure of sigvec,
3992 * which is the way the (assembly) code is actually written.
3994 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
3995 SYMBOL_CLASS (s
) = LOC_BLOCK
;
3996 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
3998 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = builtin_type_void
;
4000 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4002 SYMBOL_BLOCK_VALUE (s
) = b
;
4003 BLOCK_START (b
) = sigtramp_address
;
4004 BLOCK_END (b
) = sigtramp_end
;
4005 BLOCK_FUNCTION (b
) = s
;
4006 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4010 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4012 struct mips_extra_func_info
*e
=
4013 ((struct mips_extra_func_info
*)
4014 xzalloc (sizeof (struct mips_extra_func_info
)));
4016 e
->numargs
= 0; /* the kernel thinks otherwise */
4017 e
->pdr
.frameoffset
= 32;
4018 e
->pdr
.framereg
= SP_REGNUM
;
4019 /* Note that setting pcreg is no longer strictly necessary as
4020 mips_frame_saved_pc is now aware of signal handler frames. */
4021 e
->pdr
.pcreg
= PC_REGNUM
;
4022 e
->pdr
.regmask
= -2;
4023 /* Offset to saved r31, in the sigtramp case the saved registers
4024 are above the frame in the sigcontext.
4025 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4026 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4027 and 32 * 4 bytes for the floating point registers. */
4028 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4029 e
->pdr
.fregmask
= -1;
4030 /* Offset to saved f30 (first saved *double* register). */
4031 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4032 e
->pdr
.isym
= (long) s
;
4033 e
->pdr
.adr
= sigtramp_address
;
4035 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4036 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4037 SYMBOL_VALUE (s
) = (long) e
;
4038 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4039 SYMBOL_CLASS (s
) = LOC_CONST
;
4040 SYMBOL_TYPE (s
) = builtin_type_void
;
4041 current_objfile
= NULL
;
4044 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4048 _initialize_mdebugread ()
4050 /* Missing basic types */
4052 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4054 mdebug_type_string
=
4055 init_type (TYPE_CODE_STRING
,
4056 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4058 (struct objfile
*) NULL
);
4060 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4061 good? Would we be better off with TYPE_CODE_ERROR? Should
4062 TYPE_CODE_ERROR print things in hex if it knows the size? */
4063 mdebug_type_fixed_dec
=
4064 init_type (TYPE_CODE_INT
,
4065 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4067 (struct objfile
*) NULL
);
4069 mdebug_type_float_dec
=
4070 init_type (TYPE_CODE_ERROR
,
4071 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4072 0, "floating decimal",
4073 (struct objfile
*) NULL
);