1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002
4 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
52 #include "stabsread.h"
53 #include "complaints.h"
56 /* These are needed if the tm.h file does not contain the necessary
57 mips specific definitions. */
59 #ifndef MIPS_EFI_SYMBOL_NAME
60 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
61 extern void ecoff_relocate_efi (struct symbol
*, CORE_ADDR
);
63 #include "coff/symconst.h"
64 typedef struct mips_extra_func_info
69 *mips_extra_func_info_t
;
76 #include <sys/types.h>
80 #include "gdb_string.h"
84 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
86 #include "libaout.h" /* Private BFD a.out information. */
87 #include "aout/aout64.h"
88 #include "aout/stab_gnu.h" /* STABS information */
90 #include "expression.h"
91 #include "language.h" /* For local_hex_string() */
93 extern void _initialize_mdebugread (void);
95 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
96 We use this define in order to know whether we should override a
97 symbol's ECOFF section with its ELF section. This is necessary in
98 case the symbol's ELF section could not be represented in ECOFF. */
99 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
100 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
103 /* We put a pointer to this structure in the read_symtab_private field
108 /* Our running best guess as to the range of text addresses for
109 this psymtab. After we've read everything in, we use this to
110 build pst->text_addrs. */
111 CORE_ADDR textlow
, texthigh
;
113 /* Index of the FDR that this psymtab represents. */
115 /* The BFD that the psymtab was created from. */
117 const struct ecoff_debug_swap
*debug_swap
;
118 struct ecoff_debug_info
*debug_info
;
119 struct mdebug_pending
**pending_list
;
120 /* Pointer to external symbols for this file. */
122 /* Size of extern_tab. */
124 enum language pst_language
;
127 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
128 #define TEXTLOW(p) (PST_PRIVATE(p)->textlow)
129 #define TEXTHIGH(p) (PST_PRIVATE(p)->texthigh)
130 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
131 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
132 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
133 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
134 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
136 #define SC_IS_TEXT(sc) ((sc) == scText \
137 || (sc) == scRConst \
140 #define SC_IS_DATA(sc) ((sc) == scData \
145 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
146 #define SC_IS_BSS(sc) ((sc) == scBss || (sc) == scSBss)
147 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
149 /* Various complaints about symbol reading that don't abort the process */
151 static struct complaint bad_file_number_complaint
=
152 {"bad file number %d", 0, 0};
154 static struct complaint index_complaint
=
155 {"bad aux index at symbol %s", 0, 0};
157 static struct complaint aux_index_complaint
=
158 {"bad proc end in aux found from symbol %s", 0, 0};
160 static struct complaint block_index_complaint
=
161 {"bad aux index at block symbol %s", 0, 0};
163 static struct complaint unknown_ext_complaint
=
164 {"unknown external symbol %s", 0, 0};
166 static struct complaint unknown_sym_complaint
=
167 {"unknown local symbol %s", 0, 0};
169 static struct complaint unknown_st_complaint
=
170 {"with type %d", 0, 0};
172 static struct complaint block_overflow_complaint
=
173 {"block containing %s overfilled", 0, 0};
175 static struct complaint basic_type_complaint
=
176 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
178 static struct complaint unknown_type_qual_complaint
=
179 {"unknown type qualifier 0x%x", 0, 0};
181 static struct complaint array_index_type_complaint
=
182 {"illegal array index type for %s, assuming int", 0, 0};
184 static struct complaint bad_tag_guess_complaint
=
185 {"guessed tag type of %s incorrectly", 0, 0};
187 static struct complaint block_member_complaint
=
188 {"declaration block contains unhandled symbol type %d", 0, 0};
190 static struct complaint stEnd_complaint
=
191 {"stEnd with storage class %d not handled", 0, 0};
193 static struct complaint unknown_mdebug_symtype_complaint
=
194 {"unknown symbol type 0x%x", 0, 0};
196 static struct complaint stab_unknown_complaint
=
197 {"unknown stabs symbol %s", 0, 0};
199 static struct complaint pdr_for_nonsymbol_complaint
=
200 {"PDR for %s, but no symbol", 0, 0};
202 static struct complaint pdr_static_symbol_complaint
=
203 {"can't handle PDR for static proc at 0x%lx", 0, 0};
205 static struct complaint bad_setjmp_pdr_complaint
=
206 {"fixing bad setjmp PDR from libc", 0, 0};
208 static struct complaint bad_fbitfield_complaint
=
209 {"can't handle TIR fBitfield for %s", 0, 0};
211 static struct complaint bad_continued_complaint
=
212 {"illegal TIR continued for %s", 0, 0};
214 static struct complaint bad_rfd_entry_complaint
=
215 {"bad rfd entry for %s: file %d, index %d", 0, 0};
217 static struct complaint unexpected_type_code_complaint
=
218 {"unexpected type code for %s", 0, 0};
220 static struct complaint unable_to_cross_ref_complaint
=
221 {"unable to cross ref btTypedef for %s", 0, 0};
223 static struct complaint bad_indirect_xref_complaint
=
224 {"unable to cross ref btIndirect for %s", 0, 0};
226 static struct complaint illegal_forward_tq0_complaint
=
227 {"illegal tq0 in forward typedef for %s", 0, 0};
229 static struct complaint illegal_forward_bt_complaint
=
230 {"illegal bt %d in forward typedef for %s", 0, 0};
232 static struct complaint bad_linetable_guess_complaint
=
233 {"guessed size of linetable for %s incorrectly", 0, 0};
235 static struct complaint bad_ext_ifd_complaint
=
236 {"bad ifd for external symbol: %d (max %d)", 0, 0};
238 static struct complaint bad_ext_iss_complaint
=
239 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
241 /* Macros and extra defs */
243 /* Puns: hard to find whether -g was used and how */
245 #define MIN_GLEVEL GLEVEL_0
246 #define compare_glevel(a,b) \
247 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
248 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
250 /* Things that really are local to this module */
252 /* Remember what we deduced to be the source language of this psymtab. */
254 static enum language psymtab_language
= language_unknown
;
260 /* How to parse debugging information for CUR_BFD. */
262 static const struct ecoff_debug_swap
*debug_swap
;
264 /* Pointers to debugging information for CUR_BFD. */
266 static struct ecoff_debug_info
*debug_info
;
268 /* Pointer to current file decriptor record, and its index */
273 /* Index of current symbol */
277 /* Note how much "debuggable" this image is. We would like
278 to see at least one FDR with full symbols */
280 static int max_gdbinfo
;
281 static int max_glevel
;
283 /* When examining .o files, report on undefined symbols */
285 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
287 /* Pseudo symbol to use when putting stabs into the symbol table. */
289 static char stabs_symbol
[] = STABS_SYMBOL
;
291 /* Types corresponding to mdebug format bt* basic types. */
293 static struct type
*mdebug_type_void
;
294 static struct type
*mdebug_type_char
;
295 static struct type
*mdebug_type_short
;
296 static struct type
*mdebug_type_int_32
;
297 #define mdebug_type_int mdebug_type_int_32
298 static struct type
*mdebug_type_int_64
;
299 static struct type
*mdebug_type_long_32
;
300 static struct type
*mdebug_type_long_64
;
301 static struct type
*mdebug_type_long_long_64
;
302 static struct type
*mdebug_type_unsigned_char
;
303 static struct type
*mdebug_type_unsigned_short
;
304 static struct type
*mdebug_type_unsigned_int_32
;
305 static struct type
*mdebug_type_unsigned_int_64
;
306 static struct type
*mdebug_type_unsigned_long_32
;
307 static struct type
*mdebug_type_unsigned_long_64
;
308 static struct type
*mdebug_type_unsigned_long_long_64
;
309 static struct type
*mdebug_type_adr_32
;
310 static struct type
*mdebug_type_adr_64
;
311 static struct type
*mdebug_type_float
;
312 static struct type
*mdebug_type_double
;
313 static struct type
*mdebug_type_complex
;
314 static struct type
*mdebug_type_double_complex
;
315 static struct type
*mdebug_type_fixed_dec
;
316 static struct type
*mdebug_type_float_dec
;
317 static struct type
*mdebug_type_string
;
319 /* Types for symbols from files compiled without debugging info. */
321 static struct type
*nodebug_func_symbol_type
;
322 static struct type
*nodebug_var_symbol_type
;
324 /* Nonzero if we have seen ecoff debugging info for a file. */
326 static int found_ecoff_debugging_info
;
328 /* Forward declarations */
330 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
333 static void parse_partial_symbols (struct objfile
*);
335 static int has_opaque_xref (FDR
*, SYMR
*);
337 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
338 char **, int, char *);
340 static struct symbol
*new_symbol (char *);
342 static struct type
*new_type (char *);
344 static struct block
*new_block (int);
346 static struct symtab
*new_symtab (char *, int, int, struct objfile
*);
348 static struct linetable
*new_linetable (int);
350 static struct blockvector
*new_bvect (int);
352 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
355 static struct symbol
*mylookup_symbol (char *, struct block
*, namespace_enum
,
358 static struct block
*shrink_block (struct block
*, struct symtab
*);
360 static void sort_blocks (struct symtab
*);
362 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
364 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
366 static void add_block (struct block
*, struct symtab
*);
368 static void add_symbol (struct symbol
*, struct block
*);
370 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
372 static struct linetable
*shrink_linetable (struct linetable
*);
374 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
377 static char *mdebug_next_symbol_text (struct objfile
*);
379 /* Address bounds for the signal trampoline in inferior, if any */
381 CORE_ADDR sigtramp_address
, sigtramp_end
;
383 /* Allocate zeroed memory */
386 xzalloc (unsigned int size
)
388 void *p
= xmalloc (size
);
394 /* Exported procedure: Builds a symtab from the PST partial one.
395 Restores the environment in effect when PST was created, delegates
396 most of the work to an ancillary procedure, and sorts
397 and reorders the symtab list at the end */
400 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
408 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
409 gdb_flush (gdb_stdout
);
412 next_symbol_text_func
= mdebug_next_symbol_text
;
414 psymtab_to_symtab_1 (pst
, pst
->filename
);
416 /* Match with global symbols. This only needs to be done once,
417 after all of the symtabs and dependencies have been read in. */
418 scan_file_globals (pst
->objfile
);
421 printf_filtered ("done.\n");
424 /* File-level interface functions */
426 /* Find a file descriptor given its index RF relative to a file CF */
429 get_rfd (int cf
, int rf
)
435 fdrs
= debug_info
->fdr
;
437 /* Object files do not have the RFD table, all refs are absolute */
440 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
441 ((char *) debug_info
->external_rfd
443 * debug_swap
->external_rfd_size
)),
448 /* Return a safer print NAME for a file descriptor */
454 return "<stripped file>";
457 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
461 /* Read in and parse the symtab of the file OBJFILE. Symbols from
462 different sections are relocated via the SECTION_OFFSETS. */
465 mdebug_build_psymtabs (struct objfile
*objfile
,
466 const struct ecoff_debug_swap
*swap
,
467 struct ecoff_debug_info
*info
)
469 cur_bfd
= objfile
->obfd
;
473 stabsread_new_init ();
474 buildsym_new_init ();
475 free_header_files ();
476 init_header_files ();
478 /* Make sure all the FDR information is swapped in. */
479 if (info
->fdr
== (FDR
*) NULL
)
485 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
486 (info
->symbolic_header
.ifdMax
488 fdr_src
= info
->external_fdr
;
490 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
492 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
493 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
496 parse_partial_symbols (objfile
);
498 /* Take the text ranges the partial symbol scanner computed for each
499 of the psymtabs and convert it into the canonical form for
502 struct partial_symtab
*p
;
504 ALL_OBJFILE_PSYMTABS (objfile
, p
)
506 p
->textlow
= TEXTLOW (p
);
507 p
->texthigh
= TEXTHIGH (p
);
512 /* Check to make sure file was compiled with -g. If not, warn the
513 user of this limitation. */
514 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
516 if (max_gdbinfo
== 0)
517 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
519 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
520 gdb_flush (gdb_stdout
);
525 /* Local utilities */
527 /* Map of FDR indexes to partial symtabs */
531 struct partial_symtab
*pst
; /* the psymtab proper */
532 long n_globals
; /* exported globals (external symbols) */
533 long globals_offset
; /* cumulative */
537 /* Utility stack, used to nest procedures and blocks properly.
538 It is a doubly linked list, to avoid too many alloc/free.
539 Since we might need it quite a few times it is NOT deallocated
542 static struct parse_stack
544 struct parse_stack
*next
, *prev
;
545 struct symtab
*cur_st
; /* Current symtab. */
546 struct block
*cur_block
; /* Block in it. */
548 /* What are we parsing. stFile, or stBlock are for files and
549 blocks. stProc or stStaticProc means we have seen the start of a
550 procedure, but not the start of the block within in. When we see
551 the start of that block, we change it to stNil, without pushing a
552 new block, i.e. stNil means both a procedure and a block. */
556 int maxsyms
; /* Max symbols in this block. */
557 struct type
*cur_type
; /* Type we parse fields for. */
558 int cur_field
; /* Field number in cur_type. */
559 CORE_ADDR procadr
; /* Start addres of this procedure */
560 int numargs
; /* Its argument count */
563 *top_stack
; /* Top stack ptr */
566 /* Enter a new lexical context */
569 push_parse_stack (void)
571 struct parse_stack
*new;
573 /* Reuse frames if possible */
574 if (top_stack
&& top_stack
->prev
)
575 new = top_stack
->prev
;
577 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
578 /* Initialize new frame with previous content */
581 register struct parse_stack
*prev
= new->prev
;
584 top_stack
->prev
= new;
586 new->next
= top_stack
;
591 /* Exit a lexical context */
594 pop_parse_stack (void)
599 top_stack
= top_stack
->next
;
603 /* Cross-references might be to things we haven't looked at
604 yet, e.g. type references. To avoid too many type
605 duplications we keep a quick fixup table, an array
606 of lists of references indexed by file descriptor */
608 struct mdebug_pending
610 struct mdebug_pending
*next
; /* link */
611 char *s
; /* the unswapped symbol */
612 struct type
*t
; /* its partial type descriptor */
616 /* The pending information is kept for an entire object file, and used
617 to be in the sym_private field. I took it out when I split
618 mdebugread from mipsread, because this might not be the only type
619 of symbols read from an object file. Instead, we allocate the
620 pending information table when we create the partial symbols, and
621 we store a pointer to the single table in each psymtab. */
623 static struct mdebug_pending
**pending_list
;
625 /* Check whether we already saw symbol SH in file FH */
627 static struct mdebug_pending
*
628 is_pending_symbol (FDR
*fh
, char *sh
)
630 int f_idx
= fh
- debug_info
->fdr
;
631 register struct mdebug_pending
*p
;
633 /* Linear search is ok, list is typically no more than 10 deep */
634 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
640 /* Add a new symbol SH of type T */
643 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
645 int f_idx
= fh
- debug_info
->fdr
;
646 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
648 /* Make sure we do not make duplicates */
651 p
= ((struct mdebug_pending
*)
652 obstack_alloc (¤t_objfile
->psymbol_obstack
,
653 sizeof (struct mdebug_pending
)));
656 p
->next
= pending_list
[f_idx
];
657 pending_list
[f_idx
] = p
;
662 /* Parsing Routines proper. */
664 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
665 For blocks, procedures and types we open a new lexical context.
666 This is basically just a big switch on the symbol's type. Argument
667 AX is the base pointer of aux symbols for this file (fh->iauxBase).
668 EXT_SH points to the unswapped symbol, which is needed for struct,
669 union, etc., types; it is NULL for an EXTR. BIGEND says whether
670 aux symbols are big-endian or little-endian. Return count of
671 SYMR's handled (normally one). */
674 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
675 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
677 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
678 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
682 struct mdebug_pending
*pend
;
686 enum address_class
class;
688 long svalue
= sh
->value
;
691 if (ext_sh
== (char *) NULL
)
692 name
= debug_info
->ssext
+ sh
->iss
;
694 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
700 /* Do not relocate relative values.
701 The value of a stEnd symbol is the displacement from the
702 corresponding start symbol value.
703 The value of a stBlock symbol is the displacement from the
704 procedure address. */
705 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
706 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
713 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
717 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
726 case stGlobal
: /* external symbol, goes into global block */
728 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
730 s
= new_symbol (name
);
731 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
734 case stStatic
: /* static data, goes into current block. */
736 b
= top_stack
->cur_block
;
737 s
= new_symbol (name
);
738 if (SC_IS_COMMON (sh
->sc
))
740 /* It is a FORTRAN common block. At least for SGI Fortran the
741 address is not in the symbol; we need to fix it later in
742 scan_file_globals. */
743 int bucket
= hashname (SYMBOL_NAME (s
));
744 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
745 global_sym_chain
[bucket
] = s
;
748 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
751 case stLocal
: /* local variable, goes into current block */
752 if (sh
->sc
== scRegister
)
754 class = LOC_REGISTER
;
755 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
759 b
= top_stack
->cur_block
;
760 s
= new_symbol (name
);
761 SYMBOL_VALUE (s
) = svalue
;
763 data
: /* Common code for symbols describing data */
764 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
765 SYMBOL_CLASS (s
) = class;
768 /* Type could be missing if file is compiled without debugging info. */
769 if (SC_IS_UNDEF (sh
->sc
)
770 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
771 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
773 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
774 /* Value of a data symbol is its memory address */
777 case stParam
: /* arg to procedure, goes into current block */
779 found_ecoff_debugging_info
= 1;
780 top_stack
->numargs
++;
782 /* Special GNU C++ name. */
783 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
784 name
= "this"; /* FIXME, not alloc'd in obstack */
785 s
= new_symbol (name
);
787 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
791 /* Pass by value in register. */
792 SYMBOL_CLASS (s
) = LOC_REGPARM
;
793 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
796 /* Pass by reference on stack. */
797 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
800 /* Pass by reference in register. */
801 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
802 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
805 /* Pass by value on stack. */
806 SYMBOL_CLASS (s
) = LOC_ARG
;
809 SYMBOL_VALUE (s
) = svalue
;
810 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
811 add_symbol (s
, top_stack
->cur_block
);
814 case stLabel
: /* label, goes into current block */
815 s
= new_symbol (name
);
816 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
817 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
818 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
819 SYMBOL_TYPE (s
) = mdebug_type_int
;
820 add_symbol (s
, top_stack
->cur_block
);
823 case stProc
: /* Procedure, usually goes into global block */
824 case stStaticProc
: /* Static procedure, goes into current block */
825 s
= new_symbol (name
);
826 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
827 SYMBOL_CLASS (s
) = LOC_BLOCK
;
828 /* Type of the return value */
829 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
833 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
834 if (STREQ (name
, "malloc") && t
->code
== TYPE_CODE_VOID
)
836 /* I don't know why, but, at least under Alpha GNU/Linux,
837 when linking against a malloc without debugging
838 symbols, its read as a function returning void---this
839 is bad because it means we cannot call functions with
840 string arguments interactively; i.e., "call
841 printf("howdy\n")" would fail with the error message
842 "program has no memory available". To avoid this, we
843 patch up the type and make it void*
844 instead. (davidm@azstarnet.com)
846 t
= make_pointer_type (t
, NULL
);
849 b
= top_stack
->cur_block
;
850 if (sh
->st
== stProc
)
852 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
853 /* The next test should normally be true, but provides a
854 hook for nested functions (which we don't want to make
856 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
857 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
858 /* Irix 5 sometimes has duplicate names for the same
859 function. We want to add such names up at the global
860 level, not as a nested function. */
861 else if (sh
->value
== top_stack
->procadr
)
862 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
866 /* Make a type for the procedure itself */
867 SYMBOL_TYPE (s
) = lookup_function_type (t
);
869 /* Create and enter a new lexical context */
870 b
= new_block (top_stack
->maxsyms
);
871 SYMBOL_BLOCK_VALUE (s
) = b
;
872 BLOCK_FUNCTION (b
) = s
;
873 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
874 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
875 add_block (b
, top_stack
->cur_st
);
877 /* Not if we only have partial info */
878 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
882 top_stack
->cur_block
= b
;
883 top_stack
->blocktype
= sh
->st
;
884 top_stack
->cur_type
= SYMBOL_TYPE (s
);
885 top_stack
->cur_field
= -1;
886 top_stack
->procadr
= sh
->value
;
887 top_stack
->numargs
= 0;
890 /* Beginning of code for structure, union, and enum definitions.
891 They all share a common set of local variables, defined here. */
893 enum type_code type_code
;
899 case stStruct
: /* Start a block defining a struct type */
900 type_code
= TYPE_CODE_STRUCT
;
901 goto structured_common
;
903 case stUnion
: /* Start a block defining a union type */
904 type_code
= TYPE_CODE_UNION
;
905 goto structured_common
;
907 case stEnum
: /* Start a block defining an enum type */
908 type_code
= TYPE_CODE_ENUM
;
909 goto structured_common
;
911 case stBlock
: /* Either a lexical block, or some type */
912 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
913 goto case_stBlock_code
; /* Lexical block */
915 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
917 /* Common code for handling struct, union, enum, and/or as-yet-
918 unknown-type blocks of info about structured data. `type_code'
919 has been set to the proper TYPE_CODE, if we know it. */
921 found_ecoff_debugging_info
= 1;
923 top_stack
->blocktype
= stBlock
;
925 /* First count the number of fields and the highest value. */
928 for (ext_tsym
= ext_sh
+ external_sym_size
;
930 ext_tsym
+= external_sym_size
)
934 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
942 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
944 /* If the type of the member is Nil (or Void),
945 without qualifiers, assume the tag is an
947 Alpha cc -migrate enums are recognized by a zero
948 index and a zero symbol value.
949 DU 4.0 cc enums are recognized by a member type of
950 btEnum without qualifiers and a zero symbol value. */
951 if (tsym
.index
== indexNil
952 || (tsym
.index
== 0 && sh
->value
== 0))
953 type_code
= TYPE_CODE_ENUM
;
956 (*debug_swap
->swap_tir_in
) (bigend
,
957 &ax
[tsym
.index
].a_ti
,
959 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
960 || (tir
.bt
== btEnum
&& sh
->value
== 0))
962 type_code
= TYPE_CODE_ENUM
;
966 if (tsym
.value
> max_value
)
967 max_value
= tsym
.value
;
976 /* This is a no-op; is it trying to tell us something
977 we should be checking? */
978 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
982 /* This is something like a struct within a
983 struct. Skip over the fields of the inner
984 struct. The -1 is because the for loop will
985 increment ext_tsym. */
986 ext_tsym
= ((char *) debug_info
->external_sym
987 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
988 * external_sym_size
));
994 /* mips cc puts out a typedef for struct x if it is not yet
995 defined when it encounters
996 struct y { struct x *xp; };
1001 /* Irix5 cc puts out a stIndirect for struct x if it is not
1002 yet defined when it encounters
1003 struct y { struct x *xp; };
1008 complain (&block_member_complaint
, tsym
.st
);
1013 /* In an stBlock, there is no way to distinguish structs,
1014 unions, and enums at this point. This is a bug in the
1015 original design (that has been fixed with the recent
1016 addition of the stStruct, stUnion, and stEnum symbol
1017 types.) The way you can tell is if/when you see a variable
1018 or field of that type. In that case the variable's type
1019 (in the AUX table) says if the type is struct, union, or
1020 enum, and points back to the stBlock here. So you can
1021 patch the tag kind up later - but only if there actually is
1022 a variable or field of that type.
1024 So until we know for sure, we will guess at this point.
1026 If the first member has index==indexNil or a void type,
1027 assume we have an enumeration.
1028 Otherwise, if there is more than one member, and all
1029 the members have offset 0, assume we have a union.
1030 Otherwise, assume we have a struct.
1032 The heuristic could guess wrong in the case of of an
1033 enumeration with no members or a union with one (or zero)
1034 members, or when all except the last field of a struct have
1035 width zero. These are uncommon and/or illegal situations,
1036 and in any case guessing wrong probably doesn't matter
1039 But if we later do find out we were wrong, we fixup the tag
1040 kind. Members of an enumeration must be handled
1041 differently from struct/union fields, and that is harder to
1042 patch up, but luckily we shouldn't need to. (If there are
1043 any enumeration members, we can tell for sure it's an enum
1046 if (type_code
== TYPE_CODE_UNDEF
)
1048 if (nfields
> 1 && max_value
== 0)
1049 type_code
= TYPE_CODE_UNION
;
1051 type_code
= TYPE_CODE_STRUCT
;
1054 /* Create a new type or use the pending type. */
1055 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1056 if (pend
== (struct mdebug_pending
*) NULL
)
1058 t
= new_type (NULL
);
1059 add_pending (cur_fdr
, ext_sh
, t
);
1064 /* Do not set the tag name if it is a compiler generated tag name
1065 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1066 Alpha cc puts out an sh->iss of zero for those. */
1067 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1068 TYPE_TAG_NAME (t
) = NULL
;
1070 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1073 TYPE_CODE (t
) = type_code
;
1074 TYPE_LENGTH (t
) = sh
->value
;
1075 TYPE_NFIELDS (t
) = nfields
;
1076 TYPE_FIELDS (t
) = f
= ((struct field
*)
1078 nfields
* sizeof (struct field
)));
1080 if (type_code
== TYPE_CODE_ENUM
)
1082 int unsigned_enum
= 1;
1084 /* This is a non-empty enum. */
1086 /* DEC c89 has the number of enumerators in the sh.value field,
1087 not the type length, so we have to compensate for that
1088 incompatibility quirk.
1089 This might do the wrong thing for an enum with one or two
1090 enumerators and gcc -gcoff -fshort-enums, but these cases
1091 are hopefully rare enough.
1092 Alpha cc -migrate has a sh.value field of zero, we adjust
1094 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1095 || TYPE_LENGTH (t
) == 0)
1096 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1097 for (ext_tsym
= ext_sh
+ external_sym_size
;
1099 ext_tsym
+= external_sym_size
)
1102 struct symbol
*enum_sym
;
1104 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1106 if (tsym
.st
!= stMember
)
1109 FIELD_BITPOS (*f
) = tsym
.value
;
1110 FIELD_TYPE (*f
) = t
;
1111 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1112 FIELD_BITSIZE (*f
) = 0;
1114 enum_sym
= ((struct symbol
*)
1115 obstack_alloc (¤t_objfile
->symbol_obstack
,
1116 sizeof (struct symbol
)));
1117 memset (enum_sym
, 0, sizeof (struct symbol
));
1118 SYMBOL_NAME (enum_sym
) =
1119 obsavestring (f
->name
, strlen (f
->name
),
1120 ¤t_objfile
->symbol_obstack
);
1121 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1122 SYMBOL_TYPE (enum_sym
) = t
;
1123 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1124 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1125 if (SYMBOL_VALUE (enum_sym
) < 0)
1127 add_symbol (enum_sym
, top_stack
->cur_block
);
1129 /* Skip the stMembers that we've handled. */
1134 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1136 /* make this the current type */
1137 top_stack
->cur_type
= t
;
1138 top_stack
->cur_field
= 0;
1140 /* Do not create a symbol for alpha cc unnamed structs. */
1144 /* gcc puts out an empty struct for an opaque struct definitions,
1145 do not create a symbol for it either. */
1146 if (TYPE_NFIELDS (t
) == 0)
1148 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1152 s
= new_symbol (name
);
1153 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1154 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1155 SYMBOL_VALUE (s
) = 0;
1156 SYMBOL_TYPE (s
) = t
;
1157 add_symbol (s
, top_stack
->cur_block
);
1160 /* End of local variables shared by struct, union, enum, and
1161 block (as yet unknown struct/union/enum) processing. */
1165 found_ecoff_debugging_info
= 1;
1166 /* beginnning of (code) block. Value of symbol
1167 is the displacement from procedure start */
1168 push_parse_stack ();
1170 /* Do not start a new block if this is the outermost block of a
1171 procedure. This allows the LOC_BLOCK symbol to point to the
1172 block with the local variables, so funcname::var works. */
1173 if (top_stack
->blocktype
== stProc
1174 || top_stack
->blocktype
== stStaticProc
)
1176 top_stack
->blocktype
= stNil
;
1180 top_stack
->blocktype
= stBlock
;
1181 b
= new_block (top_stack
->maxsyms
);
1182 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1183 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1184 top_stack
->cur_block
= b
;
1185 add_block (b
, top_stack
->cur_st
);
1188 case stEnd
: /* end (of anything) */
1189 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1191 /* Finished with type */
1192 top_stack
->cur_type
= 0;
1194 else if (sh
->sc
== scText
&&
1195 (top_stack
->blocktype
== stProc
||
1196 top_stack
->blocktype
== stStaticProc
))
1198 /* Finished with procedure */
1199 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1200 struct mips_extra_func_info
*e
;
1202 struct type
*ftype
= top_stack
->cur_type
;
1205 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1207 /* Make up special symbol to contain procedure specific info */
1208 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1209 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1210 SYMBOL_CLASS (s
) = LOC_CONST
;
1211 SYMBOL_TYPE (s
) = mdebug_type_void
;
1212 e
= ((struct mips_extra_func_info
*)
1213 obstack_alloc (¤t_objfile
->symbol_obstack
,
1214 sizeof (struct mips_extra_func_info
)));
1215 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1216 SYMBOL_VALUE (s
) = (long) e
;
1217 e
->numargs
= top_stack
->numargs
;
1218 e
->pdr
.framereg
= -1;
1219 add_symbol (s
, top_stack
->cur_block
);
1221 /* Reallocate symbols, saving memory */
1222 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1224 /* f77 emits proc-level with address bounds==[0,0],
1225 So look for such child blocks, and patch them. */
1226 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1228 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1229 if (BLOCK_SUPERBLOCK (b_bad
) == b
1230 && BLOCK_START (b_bad
) == top_stack
->procadr
1231 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1233 BLOCK_START (b_bad
) = BLOCK_START (b
);
1234 BLOCK_END (b_bad
) = BLOCK_END (b
);
1238 if (TYPE_NFIELDS (ftype
) <= 0)
1240 /* No parameter type information is recorded with the function's
1241 type. Set that from the type of the parameter symbols. */
1242 int nparams
= top_stack
->numargs
;
1248 TYPE_NFIELDS (ftype
) = nparams
;
1249 TYPE_FIELDS (ftype
) = (struct field
*)
1250 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1252 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1254 sym
= BLOCK_SYM (b
, i
);
1255 switch (SYMBOL_CLASS (sym
))
1260 case LOC_REGPARM_ADDR
:
1261 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1262 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1272 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1274 /* End of (code) block. The value of the symbol is the
1275 displacement from the procedure`s start address of the
1276 end of this block. */
1277 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1278 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1280 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1282 /* End of outermost block. Pop parse stack and ignore. The
1283 following stEnd of stProc will take care of the block. */
1286 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1288 /* End of file. Pop parse stack and ignore. Higher
1289 level code deals with this. */
1293 complain (&stEnd_complaint
, sh
->sc
);
1295 pop_parse_stack (); /* restore previous lexical context */
1298 case stMember
: /* member of struct or union */
1299 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1300 FIELD_NAME (*f
) = name
;
1301 FIELD_BITPOS (*f
) = sh
->value
;
1303 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1304 FIELD_BITSIZE (*f
) = bitsize
;
1307 case stIndirect
: /* forward declaration on Irix5 */
1308 /* Forward declarations from Irix5 cc are handled by cross_ref,
1312 case stTypedef
: /* type definition */
1313 found_ecoff_debugging_info
= 1;
1315 /* Typedefs for forward declarations and opaque structs from alpha cc
1316 are handled by cross_ref, skip them. */
1320 /* Parse the type or use the pending type. */
1321 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1322 if (pend
== (struct mdebug_pending
*) NULL
)
1324 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1325 add_pending (cur_fdr
, ext_sh
, t
);
1330 /* mips cc puts out a typedef with the name of the struct for forward
1331 declarations. These should not go into the symbol table and
1332 TYPE_NAME should not be set for them.
1333 They can't be distinguished from an intentional typedef to
1334 the same name however:
1336 struct x { int ix; int jx; };
1340 struct xx {int ixx; int jxx; };
1341 generates a cross referencing stTypedef for x and xx.
1342 The user visible effect of this is that the type of a pointer
1343 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1344 The problem is fixed with alpha cc and Irix5 cc. */
1346 /* However if the typedef cross references to an opaque aggregate, it
1347 is safe to omit it from the symbol table. */
1349 if (has_opaque_xref (cur_fdr
, sh
))
1351 s
= new_symbol (name
);
1352 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1353 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1354 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1355 SYMBOL_TYPE (s
) = t
;
1356 add_symbol (s
, top_stack
->cur_block
);
1358 /* Incomplete definitions of structs should not get a name. */
1359 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1360 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1361 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1362 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1364 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1365 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1367 /* If we are giving a name to a type such as "pointer to
1368 foo" or "function returning foo", we better not set
1369 the TYPE_NAME. If the program contains "typedef char
1370 *caddr_t;", we don't want all variables of type char
1371 * to print as caddr_t. This is not just a
1372 consequence of GDB's type management; CC and GCC (at
1373 least through version 2.4) both output variables of
1374 either type char * or caddr_t with the type
1375 refering to the stTypedef symbol for caddr_t. If a future
1376 compiler cleans this up it GDB is not ready for it
1377 yet, but if it becomes ready we somehow need to
1378 disable this check (without breaking the PCC/GCC2.4
1383 Fortunately, this check seems not to be necessary
1384 for anything except pointers or functions. */
1387 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1391 case stFile
: /* file name */
1392 push_parse_stack ();
1393 top_stack
->blocktype
= sh
->st
;
1396 /* I`ve never seen these for C */
1398 break; /* register relocation */
1400 break; /* forwarding address */
1402 break; /* constant */
1404 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1411 /* Parse the type information provided in the raw AX entries for
1412 the symbol SH. Return the bitfield size in BS, in case.
1413 We must byte-swap the AX entries before we use them; BIGEND says whether
1414 they are big-endian or little-endian (from fh->fBigendian). */
1416 static struct type
*
1417 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1418 int bigend
, char *sym_name
)
1420 /* Null entries in this map are treated specially */
1421 static struct type
**map_bt
[] =
1423 &mdebug_type_void
, /* btNil */
1424 &mdebug_type_adr_32
, /* btAdr */
1425 &mdebug_type_char
, /* btChar */
1426 &mdebug_type_unsigned_char
, /* btUChar */
1427 &mdebug_type_short
, /* btShort */
1428 &mdebug_type_unsigned_short
, /* btUShort */
1429 &mdebug_type_int_32
, /* btInt */
1430 &mdebug_type_unsigned_int_32
, /* btUInt */
1431 &mdebug_type_long_32
, /* btLong */
1432 &mdebug_type_unsigned_long_32
, /* btULong */
1433 &mdebug_type_float
, /* btFloat */
1434 &mdebug_type_double
, /* btDouble */
1441 &mdebug_type_complex
, /* btComplex */
1442 &mdebug_type_double_complex
, /* btDComplex */
1444 &mdebug_type_fixed_dec
, /* btFixedDec */
1445 &mdebug_type_float_dec
, /* btFloatDec */
1446 &mdebug_type_string
, /* btString */
1449 &mdebug_type_void
, /* btVoid */
1450 0, /* DEC C++: Pointer to member */
1451 0, /* DEC C++: Virtual function table */
1452 0, /* DEC C++: Class (Record) */
1453 &mdebug_type_long_64
, /* btLong64 */
1454 &mdebug_type_unsigned_long_64
, /* btULong64 */
1455 &mdebug_type_long_long_64
, /* btLongLong64 */
1456 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1457 &mdebug_type_adr_64
, /* btAdr64 */
1458 &mdebug_type_int_64
, /* btInt64 */
1459 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1463 struct type
*tp
= 0;
1464 enum type_code type_code
= TYPE_CODE_UNDEF
;
1466 /* Handle undefined types, they have indexNil. */
1467 if (aux_index
== indexNil
)
1468 return mdebug_type_int
;
1470 /* Handle corrupt aux indices. */
1471 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1473 complain (&index_complaint
, sym_name
);
1474 return mdebug_type_int
;
1478 /* Use aux as a type information record, map its basic type. */
1479 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1480 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1482 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1483 return mdebug_type_int
;
1487 tp
= *map_bt
[t
->bt
];
1492 /* Cannot use builtin types -- build our own */
1496 type_code
= TYPE_CODE_STRUCT
;
1499 type_code
= TYPE_CODE_UNION
;
1502 type_code
= TYPE_CODE_ENUM
;
1505 type_code
= TYPE_CODE_RANGE
;
1508 type_code
= TYPE_CODE_SET
;
1511 /* alpha cc -migrate uses this for typedefs. The true type will
1512 be obtained by crossreferencing below. */
1513 type_code
= TYPE_CODE_ERROR
;
1516 /* alpha cc uses this for typedefs. The true type will be
1517 obtained by crossreferencing below. */
1518 type_code
= TYPE_CODE_ERROR
;
1521 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1522 return mdebug_type_int
;
1526 /* Move on to next aux */
1531 int width
= AUX_GET_WIDTH (bigend
, ax
);
1533 /* Inhibit core dumps with some cfront generated objects that
1535 if (bs
== (int *) NULL
)
1537 /* Alpha cc -migrate encodes char and unsigned char types
1538 as short and unsigned short types with a field width of 8.
1539 Enum types also have a field width which we ignore for now. */
1540 if (t
->bt
== btShort
&& width
== 8)
1541 tp
= mdebug_type_char
;
1542 else if (t
->bt
== btUShort
&& width
== 8)
1543 tp
= mdebug_type_unsigned_char
;
1544 else if (t
->bt
== btEnum
)
1547 complain (&bad_fbitfield_complaint
, sym_name
);
1554 /* A btIndirect entry cross references to an aux entry containing
1556 if (t
->bt
== btIndirect
)
1563 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1565 if (rn
->rfd
== 0xfff)
1567 rf
= AUX_GET_ISYM (bigend
, ax
);
1575 complain (&bad_indirect_xref_complaint
, sym_name
);
1576 return mdebug_type_int
;
1578 xref_fh
= get_rfd (fd
, rf
);
1579 xref_fd
= xref_fh
- debug_info
->fdr
;
1580 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1581 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1584 /* All these types really point to some (common) MIPS type
1585 definition, and only the type-qualifiers fully identify
1586 them. We'll make the same effort at sharing. */
1587 if (t
->bt
== btStruct
||
1591 /* btSet (I think) implies that the name is a tag name, not a typedef
1592 name. This apparently is a MIPS extension for C sets. */
1597 /* Try to cross reference this type, build new type on failure. */
1598 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1599 if (tp
== (struct type
*) NULL
)
1600 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1602 /* DEC c89 produces cross references to qualified aggregate types,
1603 dereference them. */
1604 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1605 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1606 tp
= tp
->target_type
;
1608 /* Make sure that TYPE_CODE(tp) has an expected type code.
1609 Any type may be returned from cross_ref if file indirect entries
1611 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1612 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1613 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1615 complain (&unexpected_type_code_complaint
, sym_name
);
1620 /* Usually, TYPE_CODE(tp) is already type_code. The main
1621 exception is if we guessed wrong re struct/union/enum.
1622 But for struct vs. union a wrong guess is harmless, so
1623 don't complain(). */
1624 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1625 && type_code
!= TYPE_CODE_ENUM
)
1626 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1627 && type_code
== TYPE_CODE_ENUM
))
1629 complain (&bad_tag_guess_complaint
, sym_name
);
1632 if (TYPE_CODE (tp
) != type_code
)
1634 TYPE_CODE (tp
) = type_code
;
1637 /* Do not set the tag name if it is a compiler generated tag name
1638 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1639 if (name
[0] == '.' || name
[0] == '\0')
1640 TYPE_TAG_NAME (tp
) = NULL
;
1641 else if (TYPE_TAG_NAME (tp
) == NULL
1642 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1643 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1644 ¤t_objfile
->type_obstack
);
1648 /* All these types really point to some (common) MIPS type
1649 definition, and only the type-qualifiers fully identify
1650 them. We'll make the same effort at sharing.
1651 FIXME: We are not doing any guessing on range types. */
1652 if (t
->bt
== btRange
)
1656 /* Try to cross reference this type, build new type on failure. */
1657 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1658 if (tp
== (struct type
*) NULL
)
1659 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1661 /* Make sure that TYPE_CODE(tp) has an expected type code.
1662 Any type may be returned from cross_ref if file indirect entries
1664 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1666 complain (&unexpected_type_code_complaint
, sym_name
);
1670 /* Usually, TYPE_CODE(tp) is already type_code. The main
1671 exception is if we guessed wrong re struct/union/enum. */
1672 if (TYPE_CODE (tp
) != type_code
)
1674 complain (&bad_tag_guess_complaint
, sym_name
);
1675 TYPE_CODE (tp
) = type_code
;
1677 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1678 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1679 ¤t_objfile
->type_obstack
);
1682 if (t
->bt
== btTypedef
)
1686 /* Try to cross reference this type, it should succeed. */
1687 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1688 if (tp
== (struct type
*) NULL
)
1690 complain (&unable_to_cross_ref_complaint
, sym_name
);
1691 tp
= mdebug_type_int
;
1695 /* Deal with range types */
1696 if (t
->bt
== btRange
)
1698 TYPE_NFIELDS (tp
) = 2;
1699 TYPE_FIELDS (tp
) = ((struct field
*)
1700 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1701 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1702 ¤t_objfile
->type_obstack
);
1703 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1705 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1706 ¤t_objfile
->type_obstack
);
1707 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1711 /* Parse all the type qualifiers now. If there are more
1712 than 6 the game will continue in the next aux */
1716 #define PARSE_TQ(tq) \
1717 if (t->tq != tqNil) \
1718 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1730 /* mips cc 2.x and gcc never put out continued aux entries. */
1734 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1738 /* Complain for illegal continuations due to corrupt aux entries. */
1740 complain (&bad_continued_complaint
, sym_name
);
1745 /* Make up a complex type from a basic one. Type is passed by
1746 reference in TPP and side-effected as necessary. The type
1747 qualifier TQ says how to handle the aux symbols at AX for
1748 the symbol SX we are currently analyzing. BIGEND says whether
1749 aux symbols are big-endian or little-endian.
1750 Returns the number of aux symbols we parsed. */
1753 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1759 /* Used in array processing */
1770 t
= lookup_pointer_type (*tpp
);
1775 t
= lookup_function_type (*tpp
);
1782 /* Determine and record the domain type (type of index) */
1783 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1789 rf
= AUX_GET_ISYM (bigend
, ax
);
1792 fh
= get_rfd (fd
, rf
);
1794 indx
= parse_type (fh
- debug_info
->fdr
,
1795 debug_info
->external_aux
+ fh
->iauxBase
,
1796 id
, (int *) NULL
, bigend
, sym_name
);
1798 /* The bounds type should be an integer type, but might be anything
1799 else due to corrupt aux entries. */
1800 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1802 complain (&array_index_type_complaint
, sym_name
);
1803 indx
= mdebug_type_int
;
1806 /* Get the bounds, and create the array type. */
1808 lower
= AUX_GET_DNLOW (bigend
, ax
);
1810 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1812 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1814 range
= create_range_type ((struct type
*) NULL
, indx
,
1817 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1819 /* We used to fill in the supplied array element bitsize
1820 here if the TYPE_LENGTH of the target type was zero.
1821 This happens for a `pointer to an array of anonymous structs',
1822 but in this case the array element bitsize is also zero,
1823 so nothing is gained.
1824 And we used to check the TYPE_LENGTH of the target type against
1825 the supplied array element bitsize.
1826 gcc causes a mismatch for `pointer to array of object',
1827 since the sdb directives it uses do not have a way of
1828 specifying the bitsize, but it does no harm (the
1829 TYPE_LENGTH should be correct) and we should be able to
1830 ignore the erroneous bitsize from the auxiliary entry safely.
1831 dbx seems to ignore it too. */
1833 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1835 if (TYPE_LENGTH (*tpp
) == 0)
1837 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1844 /* Volatile -- currently ignored */
1848 /* Const -- currently ignored */
1852 complain (&unknown_type_qual_complaint
, tq
);
1858 /* Parse a procedure descriptor record PR. Note that the procedure is
1859 parsed _after_ the local symbols, now we just insert the extra
1860 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1861 already been placed in the procedure's main block. Note also that
1862 images that have been partially stripped (ld -x) have been deprived
1863 of local symbols, and we have to cope with them here. FIRST_OFF is
1864 the offset of the first procedure for this FDR; we adjust the
1865 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1866 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1867 in question, or NULL to use top_stack->cur_block. */
1869 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1872 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1873 struct partial_symtab
*pst
)
1875 struct symbol
*s
, *i
;
1877 struct mips_extra_func_info
*e
;
1880 /* Simple rule to find files linked "-x" */
1881 if (cur_fdr
->rss
== -1)
1885 /* Static procedure at address pr->adr. Sigh. */
1886 /* FIXME-32x64. assuming pr->adr fits in long. */
1887 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1895 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1896 ((char *) debug_info
->external_ext
1898 * debug_swap
->external_ext_size
)),
1900 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1908 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1909 ((char *) debug_info
->external_sym
1910 + ((cur_fdr
->isymBase
+ pr
->isym
)
1911 * debug_swap
->external_sym_size
)),
1913 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1916 if (search_symtab
!= NULL
)
1919 /* This loses both in the case mentioned (want a static, find a global),
1920 but also if we are looking up a non-mangled name which happens to
1921 match the name of a mangled function. */
1922 /* We have to save the cur_fdr across the call to lookup_symbol.
1923 If the pdr is for a static function and if a global function with
1924 the same name exists, lookup_symbol will eventually read in the symtab
1925 for the global function and clobber cur_fdr. */
1926 FDR
*save_cur_fdr
= cur_fdr
;
1927 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1928 cur_fdr
= save_cur_fdr
;
1932 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1938 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1939 VAR_NAMESPACE
, LOC_BLOCK
);
1943 b
= SYMBOL_BLOCK_VALUE (s
);
1947 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1951 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1952 s
= new_symbol (sh_name
);
1953 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1954 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1955 /* Donno its type, hope int is ok */
1956 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1957 add_symbol (s
, top_stack
->cur_block
);
1958 /* Wont have symbols for this one */
1960 SYMBOL_BLOCK_VALUE (s
) = b
;
1961 BLOCK_FUNCTION (b
) = s
;
1962 BLOCK_START (b
) = pr
->adr
;
1963 /* BOUND used to be the end of procedure's text, but the
1964 argument is no longer passed in. */
1965 BLOCK_END (b
) = bound
;
1966 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1967 add_block (b
, top_stack
->cur_st
);
1971 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1975 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1977 e
->pdr
.isym
= (long) s
;
1979 /* GDB expects the absolute function start address for the
1980 procedure descriptor in e->pdr.adr.
1981 As the address in the procedure descriptor is usually relative,
1982 we would have to relocate e->pdr.adr with cur_fdr->adr and
1983 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1984 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1985 in shared libraries on some systems, and on other systems
1986 e->pdr.adr is sometimes offset by a bogus value.
1987 To work around these problems, we replace e->pdr.adr with
1988 the start address of the function. */
1989 e
->pdr
.adr
= BLOCK_START (b
);
1991 /* Correct incorrect setjmp procedure descriptor from the library
1992 to make backtrace through setjmp work. */
1993 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1995 complain (&bad_setjmp_pdr_complaint
, 0);
1996 e
->pdr
.pcreg
= RA_REGNUM
;
1997 e
->pdr
.regmask
= 0x80000000;
1998 e
->pdr
.regoffset
= -4;
2002 /* It would be reasonable that functions that have been compiled
2003 without debugging info have a btNil type for their return value,
2004 and functions that are void and are compiled with debugging info
2006 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2007 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2009 The glevel field in cur_fdr could be used to determine the presence
2010 of debugging info, but GCC doesn't always pass the -g switch settings
2011 to the assembler and GAS doesn't set the glevel field from the -g switch
2013 To work around these problems, the return value type of a TYPE_CODE_VOID
2014 function is adjusted accordingly if no debugging info was found in the
2015 compilation unit. */
2017 if (processing_gcc_compilation
== 0
2018 && found_ecoff_debugging_info
== 0
2019 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2020 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2023 /* Relocate the extra function info pointed to by the symbol table. */
2026 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2028 struct mips_extra_func_info
*e
;
2030 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2032 e
->pdr
.adr
+= delta
;
2035 /* Parse the external symbol ES. Just call parse_symbol() after
2036 making sure we know where the aux are for it.
2037 BIGEND says whether aux entries are big-endian or little-endian.
2039 This routine clobbers top_stack->cur_block and ->cur_st. */
2041 static void parse_external (EXTR
*, int, struct section_offsets
*,
2045 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2046 struct objfile
*objfile
)
2050 if (es
->ifd
!= ifdNil
)
2053 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2054 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2058 cur_fdr
= debug_info
->fdr
;
2062 /* Reading .o files */
2063 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2066 switch (es
->asym
.st
)
2069 /* These are generated for static symbols in .o files,
2090 /* FIXME: Turn this into a complaint? */
2092 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2093 what
, debug_info
->ssext
+ es
->asym
.iss
,
2094 fdr_name (cur_fdr
));
2098 switch (es
->asym
.st
)
2102 /* There is no need to parse the external procedure symbols.
2103 If they are from objects compiled without -g, their index will
2104 be indexNil, and the symbol definition from the minimal symbol
2105 is preferrable (yielding a function returning int instead of int).
2106 If the index points to a local procedure symbol, the local
2107 symbol already provides the correct type.
2108 Note that the index of the external procedure symbol points
2109 to the local procedure symbol in the local symbol table, and
2110 _not_ to the auxiliary symbol info. */
2114 /* Global common symbols are resolved by the runtime loader,
2116 if (SC_IS_COMMON (es
->asym
.sc
))
2119 /* Note that the case of a symbol with indexNil must be handled
2120 anyways by parse_symbol(). */
2121 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2128 /* Parse the line number info for file descriptor FH into
2129 GDB's linetable LT. MIPS' encoding requires a little bit
2130 of magic to get things out. Note also that MIPS' line
2131 numbers can go back and forth, apparently we can live
2132 with that and do not need to reorder our linetables */
2134 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2135 struct partial_symtab
*, CORE_ADDR
);
2138 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2139 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2141 unsigned char *base
;
2143 int delta
, count
, lineno
= 0;
2145 if (fh
->cbLine
== 0)
2148 /* Scan by procedure descriptors */
2150 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2154 unsigned char *halt
;
2156 /* No code for this one */
2157 if (pr
->iline
== ilineNil
||
2158 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2161 /* Determine start and end address of compressed line bytes for
2163 base
= debug_info
->line
+ fh
->cbLineOffset
;
2164 if (j
!= (fh
->cpd
- 1))
2165 halt
= base
+ pr
[1].cbLineOffset
;
2167 halt
= base
+ fh
->cbLine
;
2168 base
+= pr
->cbLineOffset
;
2170 adr
= TEXTLOW (pst
) + pr
->adr
- lowest_pdr_addr
;
2172 l
= adr
>> 2; /* in words */
2173 for (lineno
= pr
->lnLow
; base
< halt
;)
2175 count
= *base
& 0x0f;
2176 delta
= *base
++ >> 4;
2181 delta
= (base
[0] << 8) | base
[1];
2182 if (delta
>= 0x8000)
2186 lineno
+= delta
; /* first delta is 0 */
2188 /* Complain if the line table overflows. Could happen
2189 with corrupt binaries. */
2190 if (lt
->nitems
>= maxlines
)
2192 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2195 k
= add_line (lt
, lineno
, l
, k
);
2201 /* Master parsing procedure for first-pass reading of file symbols
2202 into a partial_symtab. */
2205 parse_partial_symbols (struct objfile
*objfile
)
2207 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2208 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2209 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2210 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2211 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2212 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2214 HDRR
*hdr
= &debug_info
->symbolic_header
;
2215 /* Running pointers */
2220 register EXTR
*ext_in
;
2223 struct partial_symtab
*pst
;
2224 int textlow_not_set
= 1;
2225 int past_first_source_file
= 0;
2227 /* List of current psymtab's include files */
2228 char **psymtab_include_list
;
2229 int includes_allocated
;
2232 struct pst_map
*fdr_to_pst
;
2233 /* Index within current psymtab dependency list */
2234 struct partial_symtab
**dependency_list
;
2235 int dependencies_used
, dependencies_allocated
;
2236 struct cleanup
*old_chain
;
2238 enum language prev_language
;
2239 asection
*text_sect
;
2240 int relocatable
= 0;
2242 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2243 the shared libraries are prelinked at a high memory address.
2244 We have to adjust the start address of the object file for this case,
2245 by setting it to the start address of the first procedure in the file.
2246 But we should do no adjustments if we are debugging a .o file, where
2247 the text section (and fh->adr) really starts at zero. */
2248 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2249 if (text_sect
!= NULL
2250 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2253 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2254 sizeof (EXTR
) * hdr
->iextMax
);
2256 includes_allocated
= 30;
2258 psymtab_include_list
= (char **) alloca (includes_allocated
*
2260 next_symbol_text_func
= mdebug_next_symbol_text
;
2262 dependencies_allocated
= 30;
2263 dependencies_used
= 0;
2265 (struct partial_symtab
**) alloca (dependencies_allocated
*
2266 sizeof (struct partial_symtab
*));
2268 last_source_file
= NULL
;
2273 * Only parse the Local and External symbols, and the Relative FDR.
2274 * Fixup enough of the loader symtab to be able to use it.
2275 * Allocate space only for the file's portions we need to
2280 max_glevel
= MIN_GLEVEL
;
2282 /* Allocate the map FDR -> PST.
2283 Minor hack: -O3 images might claim some global data belongs
2284 to FDR -1. We`ll go along with that */
2285 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2286 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2289 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2290 fdr_to_pst
[-1].pst
= pst
;
2294 /* Allocate the global pending list. */
2296 ((struct mdebug_pending
**)
2297 obstack_alloc (&objfile
->psymbol_obstack
,
2298 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2299 memset (pending_list
, 0,
2300 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2302 /* Pass 0 over external syms: swap them in. */
2303 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2304 make_cleanup (xfree
, ext_block
);
2306 ext_out
= (char *) debug_info
->external_ext
;
2307 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2309 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2310 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2312 /* Pass 1 over external syms: Presize and partition the list */
2314 ext_in_end
= ext_in
+ hdr
->iextMax
;
2315 for (; ext_in
< ext_in_end
; ext_in
++)
2317 /* See calls to complain below. */
2318 if (ext_in
->ifd
>= -1
2319 && ext_in
->ifd
< hdr
->ifdMax
2320 && ext_in
->asym
.iss
>= 0
2321 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2322 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2325 /* Pass 1.5 over files: partition out global symbol space */
2327 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2329 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2330 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2331 fdr_to_pst
[f_idx
].n_globals
= 0;
2336 For ECOFF in ELF, we skip the creation of the minimal symbols.
2337 The ECOFF symbols should be a subset of the Elf symbols, and the
2338 section information of the elf symbols will be more accurate.
2339 FIXME! What about Irix 5's native linker?
2341 By default, Elf sections which don't exist in ECOFF
2342 get put in ECOFF's absolute section by the gnu linker.
2343 Since absolute sections don't get relocated, we
2344 end up calculating an address different from that of
2345 the symbol's minimal symbol (created earlier from the
2348 To fix this, either :
2349 1) don't create the duplicate symbol
2350 (assumes ECOFF symtab is a subset of the ELF symtab;
2351 assumes no side-effects result from ignoring ECOFF symbol)
2352 2) create it, only if lookup for existing symbol in ELF's minimal
2355 assumes no side-effects result from ignoring ECOFF symbol)
2356 3) create it, but lookup ELF's minimal symbol and use it's section
2357 during relocation, then modify "uniqify" phase to merge and
2358 eliminate the duplicate symbol
2359 (highly inefficient)
2361 I've implemented #1 here...
2362 Skip the creation of the minimal symbols based on the ECOFF
2365 /* Pass 2 over external syms: fill in external symbols */
2367 ext_in_end
= ext_in
+ hdr
->iextMax
;
2368 for (; ext_in
< ext_in_end
; ext_in
++)
2370 enum minimal_symbol_type ms_type
= mst_text
;
2371 CORE_ADDR svalue
= ext_in
->asym
.value
;
2373 /* The Irix 5 native tools seem to sometimes generate bogus
2374 external symbols. */
2375 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2377 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2380 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2382 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2387 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2388 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2391 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2395 /* Pass 3 over files, over local syms: fill in static symbols */
2396 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2398 /* Process ECOFF Symbol Types and Storage Classes */
2399 switch (ext_in
->asym
.st
)
2402 /* Beginnning of Procedure */
2403 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2406 /* Load time only static procs */
2407 ms_type
= mst_file_text
;
2408 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2411 /* External symbol */
2412 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2414 /* The value of a common symbol is its size, not its address.
2418 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2421 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2423 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2426 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2433 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2435 ms_type
= mst_file_text
;
2436 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2438 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2440 ms_type
= mst_file_data
;
2441 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2443 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2445 ms_type
= mst_file_bss
;
2446 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2453 /* The alpha has the section start addresses in stLocal symbols
2454 whose name starts with a `.'. Skip those but complain for all
2455 other stLocal symbols.
2456 Irix6 puts the section start addresses in stNil symbols, skip
2462 ms_type
= mst_unknown
;
2463 complain (&unknown_ext_complaint
, name
);
2465 if (!ECOFF_IN_ELF (cur_bfd
))
2466 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2469 /* Pass 3 over files, over local syms: fill in static symbols */
2470 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2472 struct partial_symtab
*save_pst
;
2476 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2480 fdr_to_pst
[f_idx
].pst
= NULL
;
2484 /* Determine the start address for this object file from the
2485 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2489 if (relocatable
|| textlow
!= 0)
2490 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2494 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2497 objfile
->global_psymbols
.next
,
2498 objfile
->static_psymbols
.next
);
2499 pst
->read_symtab_private
= ((char *)
2500 obstack_alloc (&objfile
->psymbol_obstack
,
2501 sizeof (struct symloc
)));
2502 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2505 TEXTLOW (pst
) = pst
->textlow
;
2506 TEXTHIGH (pst
) = pst
->texthigh
;
2507 FDR_IDX (pst
) = f_idx
;
2508 CUR_BFD (pst
) = cur_bfd
;
2509 DEBUG_SWAP (pst
) = debug_swap
;
2510 DEBUG_INFO (pst
) = debug_info
;
2511 PENDING_LIST (pst
) = pending_list
;
2513 /* The way to turn this into a symtab is to call... */
2514 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2516 /* Set up language for the pst.
2517 The language from the FDR is used if it is unambigious (e.g. cfront
2518 with native cc and g++ will set the language to C).
2519 Otherwise we have to deduce the language from the filename.
2520 Native ecoff has every header file in a separate FDR, so
2521 deduce_language_from_filename will return language_unknown for
2522 a header file, which is not what we want.
2523 But the FDRs for the header files are after the FDR for the source
2524 file, so we can assign the language of the source file to the
2525 following header files. Then we save the language in the private
2526 pst data so that we can reuse it when building symtabs. */
2527 prev_language
= psymtab_language
;
2531 case langCplusplusV2
:
2532 psymtab_language
= language_cplus
;
2535 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2538 if (psymtab_language
== language_unknown
)
2539 psymtab_language
= prev_language
;
2540 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2542 TEXTHIGH (pst
) = TEXTLOW (pst
);
2544 /* For stabs-in-ecoff files, the second symbol must be @stab.
2545 This symbol is emitted by mips-tfile to signal that the
2546 current object file uses encapsulated stabs instead of mips
2547 ecoff for local symbols. (It is the second symbol because
2548 the first symbol is the stFile used to signal the start of a
2550 processing_gcc_compilation
= 0;
2553 (*swap_sym_in
) (cur_bfd
,
2554 ((char *) debug_info
->external_sym
2555 + (fh
->isymBase
+ 1) * external_sym_size
),
2557 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2558 processing_gcc_compilation
= 2;
2561 if (processing_gcc_compilation
!= 0)
2563 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2568 (*swap_sym_in
) (cur_bfd
,
2569 (((char *) debug_info
->external_sym
)
2570 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2572 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2573 if (!ECOFF_IS_STAB (&sh
))
2575 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2580 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2581 if (sh
.st
== stStaticProc
)
2583 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2584 prim_record_minimal_symbol_and_info (namestring
,
2588 SECT_OFF_TEXT (objfile
),
2592 procaddr
= sh
.value
;
2594 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2595 (debug_info
->external_aux
2598 (*swap_sym_in
) (cur_bfd
,
2599 ((char *) debug_info
->external_sym
2600 + ((fh
->isymBase
+ isym
- 1)
2601 * external_sym_size
)),
2605 CORE_ADDR high
= procaddr
+ sh
.value
;
2607 /* Kludge for Irix 5.2 zero fh->adr. */
2609 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
2610 TEXTLOW (pst
) = procaddr
;
2611 if (high
> TEXTHIGH (pst
))
2612 TEXTHIGH (pst
) = high
;
2615 else if (sh
.st
== stStatic
)
2630 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2631 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2632 prim_record_minimal_symbol_and_info (namestring
,
2636 SECT_OFF_DATA (objfile
),
2642 /* FIXME! Shouldn't this use cases for bss,
2643 then have the default be abs? */
2644 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2645 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2646 prim_record_minimal_symbol_and_info (namestring
,
2650 SECT_OFF_BSS (objfile
),
2658 /* Handle stabs continuation */
2660 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2661 int len
= strlen (stabstring
);
2662 while (stabstring
[len
- 1] == '\\')
2665 char *stabstring1
= stabstring
;
2669 /* Ignore continuation char from 1st string */
2672 /* Read next stabstring */
2674 (*swap_sym_in
) (cur_bfd
,
2675 (((char *) debug_info
->external_sym
)
2676 + (fh
->isymBase
+ cur_sdx
)
2677 * external_sym_size
),
2679 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2680 len2
= strlen (stabstring2
);
2682 /* Concatinate stabstring2 with stabstring1 */
2684 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2685 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2688 stabstring
= xmalloc (len
+ len2
+ 1);
2689 strcpy (stabstring
, stabstring1
);
2691 strcpy (stabstring
+ len
, stabstring2
);
2697 static struct complaint function_outside_compilation_unit
= {
2698 "function `%s' appears to be defined outside of all compilation units", 0, 0
2702 * Standard, external, non-debugger, symbols
2705 case N_TEXT
| N_EXT
:
2706 case N_NBTEXT
| N_EXT
:
2707 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2710 case N_DATA
| N_EXT
:
2711 case N_NBDATA
| N_EXT
:
2712 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2717 case N_NBBSS
| N_EXT
:
2718 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2719 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2726 /* Standard, local, non-debugger, symbols */
2730 /* We need to be able to deal with both N_FN or N_TEXT,
2731 because we have no way of knowing whether the sys-supplied ld
2732 or GNU ld was used to make the executable. Sequents throw
2733 in another wrinkle -- they renumbered N_FN. */
2741 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2744 case N_UNDF
| N_EXT
:
2745 continue; /* Just undefined, not COMMON */
2750 /* Lots of symbol types we can just ignore. */
2757 /* Keep going . . . */
2760 * Special symbol types for GNU
2763 case N_INDR
| N_EXT
:
2765 case N_SETA
| N_EXT
:
2767 case N_SETT
| N_EXT
:
2769 case N_SETD
| N_EXT
:
2771 case N_SETB
| N_EXT
:
2782 static int prev_so_symnum
= -10;
2783 static int first_so_symnum
;
2785 int prev_textlow_not_set
;
2787 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2789 prev_textlow_not_set
= textlow_not_set
;
2791 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2792 /* A zero value is probably an indication for the SunPRO 3.0
2793 compiler. end_psymtab explicitly tests for zero, so
2794 don't relocate it. */
2798 textlow_not_set
= 1;
2802 textlow_not_set
= 0;
2804 textlow_not_set
= 0;
2806 past_first_source_file
= 1;
2808 if (prev_so_symnum
!= symnum
- 1)
2809 { /* Here if prev stab wasn't N_SO */
2810 first_so_symnum
= symnum
;
2814 pst
= (struct partial_symtab
*) 0;
2816 dependencies_used
= 0;
2820 prev_so_symnum
= symnum
;
2822 /* End the current partial symtab and start a new one */
2824 /* SET_NAMESTRING ();*/
2825 namestring
= stabstring
;
2827 /* Null name means end of .o file. Don't start a new one. */
2828 if (*namestring
== '\000')
2831 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2832 The first one is a directory name; the second the file name.
2833 If pst exists, is empty, and has a filename ending in '/',
2834 we assume the previous N_SO was a directory name. */
2836 p
= strrchr (namestring
, '/');
2837 if (p
&& *(p
+ 1) == '\000')
2838 continue; /* Simply ignore directory name SOs */
2840 /* Some other compilers (C++ ones in particular) emit useless
2841 SOs for non-existant .c files. We ignore all subsequent SOs that
2842 immediately follow the first. */
2854 enum language tmp_language
;
2855 /* Mark down an include file in the current psymtab */
2857 /* SET_NAMESTRING ();*/
2858 namestring
= stabstring
;
2860 tmp_language
= deduce_language_from_filename (namestring
);
2862 /* Only change the psymtab's language if we've learned
2863 something useful (eg. tmp_language is not language_unknown).
2864 In addition, to match what start_subfile does, never change
2866 if (tmp_language
!= language_unknown
2867 && (tmp_language
!= language_c
2868 || psymtab_language
!= language_cplus
))
2869 psymtab_language
= tmp_language
;
2871 /* In C++, one may expect the same filename to come round many
2872 times, when code is coming alternately from the main file
2873 and from inline functions in other files. So I check to see
2874 if this is a file we've seen before -- either the main
2875 source file, or a previously included file.
2877 This seems to be a lot of time to be spending on N_SOL, but
2878 things like "break c-exp.y:435" need to work (I
2879 suppose the psymtab_include_list could be hashed or put
2880 in a binary tree, if profiling shows this is a major hog). */
2881 if (pst
&& STREQ (namestring
, pst
->filename
))
2885 for (i
= 0; i
< includes_used
; i
++)
2886 if (STREQ (namestring
, psymtab_include_list
[i
]))
2895 psymtab_include_list
[includes_used
++] = namestring
;
2896 if (includes_used
>= includes_allocated
)
2898 char **orig
= psymtab_include_list
;
2900 psymtab_include_list
= (char **)
2901 alloca ((includes_allocated
*= 2) *
2903 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2904 includes_used
* sizeof (char *));
2908 case N_LSYM
: /* Typedef or automatic variable. */
2909 case N_STSYM
: /* Data seg var -- static */
2910 case N_LCSYM
: /* BSS " */
2911 case N_ROSYM
: /* Read-only data seg var -- static. */
2912 case N_NBSTS
: /* Gould nobase. */
2913 case N_NBLCS
: /* symbols. */
2915 case N_GSYM
: /* Global (extern) variable; can be
2916 data or bss (sigh FIXME). */
2918 /* Following may probably be ignored; I'll leave them here
2919 for now (until I do Pascal and Modula 2 extensions). */
2921 case N_PC
: /* I may or may not need this; I
2923 case N_M2C
: /* I suspect that I can ignore this here. */
2924 case N_SCOPE
: /* Same. */
2926 /* SET_NAMESTRING ();*/
2927 namestring
= stabstring
;
2928 p
= (char *) strchr (namestring
, ':');
2930 continue; /* Not a debugging symbol. */
2934 /* Main processing section for debugging symbols which
2935 the initial read through the symbol tables needs to worry
2936 about. If we reach this point, the symbol which we are
2937 considering is definitely one we are interested in.
2938 p must also contain the (valid) index into the namestring
2939 which indicates the debugging type symbol. */
2944 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2945 #ifdef STATIC_TRANSFORM_NAME
2946 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2948 add_psymbol_to_list (namestring
, p
- namestring
,
2949 VAR_NAMESPACE
, LOC_STATIC
,
2950 &objfile
->static_psymbols
,
2952 psymtab_language
, objfile
);
2955 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2956 /* The addresses in these entries are reported to be
2957 wrong. See the code that reads 'G's for symtabs. */
2958 add_psymbol_to_list (namestring
, p
- namestring
,
2959 VAR_NAMESPACE
, LOC_STATIC
,
2960 &objfile
->global_psymbols
,
2962 psymtab_language
, objfile
);
2966 /* When a 'T' entry is defining an anonymous enum, it
2967 may have a name which is the empty string, or a
2968 single space. Since they're not really defining a
2969 symbol, those shouldn't go in the partial symbol
2970 table. We do pick up the elements of such enums at
2971 'check_enum:', below. */
2972 if (p
>= namestring
+ 2
2973 || (p
== namestring
+ 1
2974 && namestring
[0] != ' '))
2976 add_psymbol_to_list (namestring
, p
- namestring
,
2977 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2978 &objfile
->static_psymbols
,
2980 psymtab_language
, objfile
);
2983 /* Also a typedef with the same name. */
2984 add_psymbol_to_list (namestring
, p
- namestring
,
2985 VAR_NAMESPACE
, LOC_TYPEDEF
,
2986 &objfile
->static_psymbols
,
2988 psymtab_language
, objfile
);
2991 /* The semantics of C++ state that "struct foo { ... }"
2992 also defines a typedef for "foo". Unfortuantely, cfront
2993 never makes the typedef when translating from C++ to C.
2994 We make the typedef here so that "ptype foo" works as
2995 expected for cfront translated code. */
2996 else if (psymtab_language
== language_cplus
)
2998 /* Also a typedef with the same name. */
2999 add_psymbol_to_list (namestring
, p
- namestring
,
3000 VAR_NAMESPACE
, LOC_TYPEDEF
,
3001 &objfile
->static_psymbols
,
3003 psymtab_language
, objfile
);
3008 if (p
!= namestring
) /* a name is there, not just :T... */
3010 add_psymbol_to_list (namestring
, p
- namestring
,
3011 VAR_NAMESPACE
, LOC_TYPEDEF
,
3012 &objfile
->static_psymbols
,
3014 psymtab_language
, objfile
);
3017 /* If this is an enumerated type, we need to
3018 add all the enum constants to the partial symbol
3019 table. This does not cover enums without names, e.g.
3020 "enum {a, b} c;" in C, but fortunately those are
3021 rare. There is no way for GDB to find those from the
3022 enum type without spending too much time on it. Thus
3023 to solve this problem, the compiler needs to put out the
3024 enum in a nameless type. GCC2 does this. */
3026 /* We are looking for something of the form
3027 <name> ":" ("t" | "T") [<number> "="] "e"
3028 {<constant> ":" <value> ","} ";". */
3030 /* Skip over the colon and the 't' or 'T'. */
3032 /* This type may be given a number. Also, numbers can come
3033 in pairs like (0,26). Skip over it. */
3034 while ((*p
>= '0' && *p
<= '9')
3035 || *p
== '(' || *p
== ',' || *p
== ')'
3041 /* The aix4 compiler emits extra crud before the members. */
3044 /* Skip over the type (?). */
3048 /* Skip over the colon. */
3052 /* We have found an enumerated type. */
3053 /* According to comments in read_enum_type
3054 a comma could end it instead of a semicolon.
3055 I don't know where that happens.
3057 while (*p
&& *p
!= ';' && *p
!= ',')
3061 /* Check for and handle cretinous dbx symbol name
3063 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3064 p
= next_symbol_text (objfile
);
3066 /* Point to the character after the name
3067 of the enum constant. */
3068 for (q
= p
; *q
&& *q
!= ':'; q
++)
3070 /* Note that the value doesn't matter for
3071 enum constants in psymtabs, just in symtabs. */
3072 add_psymbol_to_list (p
, q
- p
,
3073 VAR_NAMESPACE
, LOC_CONST
,
3074 &objfile
->static_psymbols
, 0,
3075 0, psymtab_language
, objfile
);
3076 /* Point past the name. */
3078 /* Skip over the value. */
3079 while (*p
&& *p
!= ',')
3081 /* Advance past the comma. */
3088 /* Constant, e.g. from "const" in Pascal. */
3089 add_psymbol_to_list (namestring
, p
- namestring
,
3090 VAR_NAMESPACE
, LOC_CONST
,
3091 &objfile
->static_psymbols
, sh
.value
,
3092 0, psymtab_language
, objfile
);
3098 int name_len
= p
- namestring
;
3099 char *name
= xmalloc (name_len
+ 1);
3100 memcpy (name
, namestring
, name_len
);
3101 name
[name_len
] = '\0';
3102 complain (&function_outside_compilation_unit
, name
);
3105 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3106 add_psymbol_to_list (namestring
, p
- namestring
,
3107 VAR_NAMESPACE
, LOC_BLOCK
,
3108 &objfile
->static_psymbols
,
3110 psymtab_language
, objfile
);
3113 /* Global functions were ignored here, but now they
3114 are put into the global psymtab like one would expect.
3115 They're also in the minimal symbol table. */
3119 int name_len
= p
- namestring
;
3120 char *name
= xmalloc (name_len
+ 1);
3121 memcpy (name
, namestring
, name_len
);
3122 name
[name_len
] = '\0';
3123 complain (&function_outside_compilation_unit
, name
);
3126 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3127 add_psymbol_to_list (namestring
, p
- namestring
,
3128 VAR_NAMESPACE
, LOC_BLOCK
,
3129 &objfile
->global_psymbols
,
3131 psymtab_language
, objfile
);
3134 /* Two things show up here (hopefully); static symbols of
3135 local scope (static used inside braces) or extensions
3136 of structure symbols. We can ignore both. */
3150 case '#': /* for symbol identification (used in live ranges) */
3151 /* added to support cfront stabs strings */
3152 case 'Z': /* for definition continuations */
3153 case 'P': /* for prototypes */
3157 /* It is a C++ nested symbol. We don't need to record it
3158 (I don't think); if we try to look up foo::bar::baz,
3159 then symbols for the symtab containing foo should get
3160 read in, I think. */
3161 /* Someone says sun cc puts out symbols like
3162 /foo/baz/maclib::/usr/local/bin/maclib,
3163 which would get here with a symbol type of ':'. */
3167 /* Unexpected symbol descriptor. The second and subsequent stabs
3168 of a continued stab can show up here. The question is
3169 whether they ever can mimic a normal stab--it would be
3170 nice if not, since we certainly don't want to spend the
3171 time searching to the end of every string looking for
3174 complain (&unknown_symchar_complaint
, p
[1]);
3176 /* Ignore it; perhaps it is an extension that we don't
3185 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3186 /* Solaris 2 end of module, finish current partial symbol table.
3187 END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which
3188 is necessary if a module compiled without debugging info
3189 follows this module. */
3192 pst
= (struct partial_symtab
*) 0;
3194 dependencies_used
= 0;
3200 if (sh
.value
> TEXTHIGH (save_pst
))
3201 TEXTHIGH (save_pst
) = sh
.value
;
3206 case N_SSYM
: /* Claim: Structure or union element.
3207 Hopefully, I can ignore this. */
3208 case N_ENTRY
: /* Alternate entry point; can ignore. */
3209 case N_MAIN
: /* Can definitely ignore this. */
3210 case N_CATCH
: /* These are GNU C++ extensions */
3211 case N_EHDECL
: /* that can safely be ignored here. */
3221 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3222 case N_DEFD
: /* GNU Modula-2 */
3223 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3225 case N_OBJ
: /* useless types from Solaris */
3227 /* These symbols aren't interesting; don't worry about them */
3232 /* If we haven't found it yet, ignore it. It's probably some
3233 new type we don't know about yet. */
3234 complain (&unknown_symtype_complaint
,
3235 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3239 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3242 /* end - Handle continuation */
3247 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3250 enum address_class
class;
3252 (*swap_sym_in
) (cur_bfd
,
3253 ((char *) debug_info
->external_sym
3254 + ((fh
->isymBase
+ cur_sdx
)
3255 * external_sym_size
)),
3258 if (ECOFF_IS_STAB (&sh
))
3264 /* Non absolute static symbols go into the minimal table. */
3265 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3266 || (sh
.index
== indexNil
3267 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3269 /* FIXME, premature? */
3274 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3280 /* The value of a stEnd symbol is the displacement from the
3281 corresponding start symbol value, do not relocate it. */
3283 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3290 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3294 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3305 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3306 mst_file_text
, NULL
,
3307 SECT_OFF_TEXT (objfile
), NULL
,
3313 /* Usually there is a local and a global stProc symbol
3314 for a function. This means that the function name
3315 has already been entered into the mimimal symbol table
3316 while processing the global symbols in pass 2 above.
3317 One notable exception is the PROGRAM name from
3318 f77 compiled executables, it is only put out as
3319 local stProc symbol, and a global MAIN__ stProc symbol
3320 points to it. It doesn't matter though, as gdb is
3321 still able to find the PROGRAM name via the partial
3322 symbol table, and the MAIN__ symbol via the minimal
3324 if (sh
.st
== stProc
)
3325 add_psymbol_to_list (name
, strlen (name
),
3326 VAR_NAMESPACE
, LOC_BLOCK
,
3327 &objfile
->global_psymbols
,
3328 0, sh
.value
, psymtab_language
, objfile
);
3330 add_psymbol_to_list (name
, strlen (name
),
3331 VAR_NAMESPACE
, LOC_BLOCK
,
3332 &objfile
->static_psymbols
,
3333 0, sh
.value
, psymtab_language
, objfile
);
3335 /* Skip over procedure to next one. */
3336 if (sh
.index
>= hdr
->iauxMax
)
3338 /* Should not happen, but does when cross-compiling
3339 with the MIPS compiler. FIXME -- pull later. */
3340 complain (&index_complaint
, name
);
3341 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3344 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3345 (debug_info
->external_aux
3348 procaddr
= sh
.value
;
3350 if (new_sdx
<= cur_sdx
)
3352 /* This should not happen either... FIXME. */
3353 complain (&aux_index_complaint
, name
);
3354 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3358 (*swap_sym_in
) (cur_bfd
,
3359 ((char *) debug_info
->external_sym
3360 + ((fh
->isymBase
+ cur_sdx
- 1)
3361 * external_sym_size
)),
3366 /* Kludge for Irix 5.2 zero fh->adr. */
3368 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
3369 TEXTLOW (pst
) = procaddr
;
3371 high
= procaddr
+ sh
.value
;
3372 if (high
> TEXTHIGH (pst
))
3373 TEXTHIGH (pst
) = high
;
3376 case stStatic
: /* Variable */
3377 if (SC_IS_DATA (sh
.sc
))
3378 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3379 mst_file_data
, NULL
,
3380 SECT_OFF_DATA (objfile
),
3384 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3386 SECT_OFF_BSS (objfile
),
3392 case stIndirect
: /* Irix5 forward declaration */
3393 /* Skip forward declarations from Irix5 cc */
3396 case stTypedef
: /* Typedef */
3397 /* Skip typedefs for forward declarations and opaque
3398 structs from alpha and mips cc. */
3399 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3401 class = LOC_TYPEDEF
;
3404 case stConstant
: /* Constant decl */
3411 case stBlock
: /* { }, str, un, enum */
3412 /* Do not create a partial symbol for cc unnamed aggregates
3413 and gcc empty aggregates. */
3414 if ((sh
.sc
== scInfo
3415 || SC_IS_COMMON (sh
.sc
))
3417 && sh
.index
!= cur_sdx
+ 2)
3419 add_psymbol_to_list (name
, strlen (name
),
3420 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3421 &objfile
->static_psymbols
,
3423 psymtab_language
, objfile
);
3425 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3427 /* Skip over the block */
3429 if (new_sdx
<= cur_sdx
)
3431 /* This happens with the Ultrix kernel. */
3432 complain (&block_index_complaint
, name
);
3433 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3438 case stFile
: /* File headers */
3439 case stLabel
: /* Labels */
3440 case stEnd
: /* Ends of files */
3443 case stLocal
: /* Local variables */
3444 /* Normally these are skipped because we skip over
3445 all blocks we see. However, these can occur
3446 as visible symbols in a .h file that contains code. */
3450 /* Both complaints are valid: one gives symbol name,
3451 the other the offending symbol type. */
3452 complain (&unknown_sym_complaint
, name
);
3453 complain (&unknown_st_complaint
, sh
.st
);
3457 /* Use this gdb symbol */
3458 add_psymbol_to_list (name
, strlen (name
),
3459 VAR_NAMESPACE
, class,
3460 &objfile
->static_psymbols
,
3461 0, sh
.value
, psymtab_language
, objfile
);
3463 cur_sdx
++; /* Go to next file symbol */
3466 /* Now do enter the external symbols. */
3467 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3468 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3469 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3470 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3471 for (; --cur_sdx
>= 0; ext_ptr
++)
3473 enum address_class
class;
3478 if (ext_ptr
->ifd
!= f_idx
)
3479 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3480 psh
= &ext_ptr
->asym
;
3482 /* Do not add undefined symbols to the partial symbol table. */
3483 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3486 svalue
= psh
->value
;
3491 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3498 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3502 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3509 /* These are generated for static symbols in .o files,
3514 /* External procedure symbols have been entered
3515 into the minimal symbol table in pass 2 above.
3516 Ignore them, as parse_external will ignore them too. */
3522 complain (&unknown_ext_complaint
,
3523 debug_info
->ssext
+ psh
->iss
);
3524 /* Fall through, pretend it's global. */
3526 /* Global common symbols are resolved by the runtime loader,
3528 if (SC_IS_COMMON (psh
->sc
))
3534 name
= debug_info
->ssext
+ psh
->iss
;
3535 add_psymbol_to_list (name
, strlen (name
),
3536 VAR_NAMESPACE
, class,
3537 &objfile
->global_psymbols
,
3539 psymtab_language
, objfile
);
3543 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3544 empty and put on the free list. */
3545 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3546 psymtab_include_list
, includes_used
,
3547 -1, TEXTHIGH (save_pst
),
3548 dependency_list
, dependencies_used
, textlow_not_set
);
3550 dependencies_used
= 0;
3552 if (objfile
->ei
.entry_point
>= TEXTLOW (save_pst
) &&
3553 objfile
->ei
.entry_point
< TEXTHIGH (save_pst
))
3555 objfile
->ei
.entry_file_lowpc
= TEXTLOW (save_pst
);
3556 objfile
->ei
.entry_file_highpc
= TEXTHIGH (save_pst
);
3559 /* The objfile has its functions reordered if this partial symbol
3560 table overlaps any other partial symbol table.
3561 We cannot assume a reordered objfile if a partial symbol table
3562 is contained within another partial symbol table, as partial symbol
3563 tables for include files with executable code are contained
3564 within the partial symbol table for the including source file,
3565 and we do not want to flag the objfile reordered for these cases.
3567 This strategy works well for Irix-5.2 shared libraries, but we
3568 might have to use a more elaborate (and slower) algorithm for
3570 save_pst
= fdr_to_pst
[f_idx
].pst
;
3571 if (save_pst
!= NULL
3572 && TEXTLOW (save_pst
) != 0
3573 && !(objfile
->flags
& OBJF_REORDERED
))
3575 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3578 && TEXTLOW (save_pst
) >= TEXTLOW (pst
)
3579 && TEXTLOW (save_pst
) < TEXTHIGH (pst
)
3580 && TEXTHIGH (save_pst
) > TEXTHIGH (pst
))
3582 objfile
->flags
|= OBJF_REORDERED
;
3589 /* Now scan the FDRs for dependencies */
3590 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3592 fh
= f_idx
+ debug_info
->fdr
;
3593 pst
= fdr_to_pst
[f_idx
].pst
;
3595 if (pst
== (struct partial_symtab
*) NULL
)
3598 /* This should catch stabs-in-ecoff. */
3602 /* Skip the first file indirect entry as it is a self dependency
3603 for source files or a reverse .h -> .c dependency for header files. */
3604 pst
->number_of_dependencies
= 0;
3606 ((struct partial_symtab
**)
3607 obstack_alloc (&objfile
->psymbol_obstack
,
3609 * sizeof (struct partial_symtab
*))));
3610 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3614 (*swap_rfd_in
) (cur_bfd
,
3615 ((char *) debug_info
->external_rfd
3616 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3618 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3620 complain (&bad_file_number_complaint
, rh
);
3624 /* Skip self dependencies of header files. */
3628 /* Do not add to dependeny list if psymtab was empty. */
3629 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3631 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3635 /* Remove the dummy psymtab created for -O3 images above, if it is
3636 still empty, to enable the detection of stripped executables. */
3637 if (objfile
->psymtabs
->next
== NULL
3638 && objfile
->psymtabs
->number_of_dependencies
== 0
3639 && objfile
->psymtabs
->n_global_syms
== 0
3640 && objfile
->psymtabs
->n_static_syms
== 0)
3641 objfile
->psymtabs
= NULL
;
3642 do_cleanups (old_chain
);
3645 /* If the current psymbol has an enumerated type, we need to add
3646 all the the enum constants to the partial symbol table. */
3649 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3652 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3653 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3654 char *ext_sym
= ((char *) debug_info
->external_sym
3655 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3665 /* It is an enumerated type if the next symbol entry is a stMember
3666 and its auxiliary index is indexNil or its auxiliary entry
3667 is a plain btNil or btVoid.
3668 Alpha cc -migrate enums are recognized by a zero index and
3669 a zero symbol value.
3670 DU 4.0 cc enums are recognized by a member type of btEnum without
3671 qualifiers and a zero symbol value. */
3672 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3673 if (sh
.st
!= stMember
)
3676 if (sh
.index
== indexNil
3677 || (sh
.index
== 0 && svalue
== 0))
3679 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3680 &(debug_info
->external_aux
3681 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3683 if ((tir
.bt
!= btNil
3685 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3686 || tir
.tq0
!= tqNil
)
3698 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3699 if (sh
.st
!= stMember
)
3701 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3703 /* Note that the value doesn't matter for enum constants
3704 in psymtabs, just in symtabs. */
3705 add_psymbol_to_list (name
, strlen (name
),
3706 VAR_NAMESPACE
, LOC_CONST
,
3707 &objfile
->static_psymbols
, 0,
3708 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3709 ext_sym
+= external_sym_size
;
3713 /* Get the next symbol. OBJFILE is unused. */
3716 mdebug_next_symbol_text (struct objfile
*objfile
)
3721 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3722 ((char *) debug_info
->external_sym
3723 + ((cur_fdr
->isymBase
+ cur_sdx
)
3724 * debug_swap
->external_sym_size
)),
3726 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3729 /* Ancillary function to psymtab_to_symtab(). Does all the work
3730 for turning the partial symtab PST into a symtab, recurring
3731 first on all dependent psymtabs. The argument FILENAME is
3732 only passed so we can see in debug stack traces what file
3735 This function has a split personality, based on whether the
3736 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3737 The flow of control and even the memory allocation differs. FIXME. */
3740 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3742 bfd_size_type external_sym_size
;
3743 bfd_size_type external_pdr_size
;
3744 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3745 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3747 struct symtab
*st
= NULL
;
3749 struct linetable
*lines
;
3750 CORE_ADDR lowest_pdr_addr
= 0;
3751 int last_symtab_ended
= 0;
3757 /* Read in all partial symbtabs on which this one is dependent.
3758 NOTE that we do have circular dependencies, sigh. We solved
3759 that by setting pst->readin before this point. */
3761 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3762 if (!pst
->dependencies
[i
]->readin
)
3764 /* Inform about additional files to be read in. */
3767 fputs_filtered (" ", gdb_stdout
);
3769 fputs_filtered ("and ", gdb_stdout
);
3771 printf_filtered ("%s...",
3772 pst
->dependencies
[i
]->filename
);
3773 wrap_here (""); /* Flush output */
3774 gdb_flush (gdb_stdout
);
3776 /* We only pass the filename for debug purposes */
3777 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3778 pst
->dependencies
[i
]->filename
);
3781 /* Do nothing if this is a dummy psymtab. */
3783 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3784 && TEXTLOW (pst
) == 0 && TEXTHIGH (pst
) == 0)
3787 /* Now read the symbols for this symtab */
3789 cur_bfd
= CUR_BFD (pst
);
3790 debug_swap
= DEBUG_SWAP (pst
);
3791 debug_info
= DEBUG_INFO (pst
);
3792 pending_list
= PENDING_LIST (pst
);
3793 external_sym_size
= debug_swap
->external_sym_size
;
3794 external_pdr_size
= debug_swap
->external_pdr_size
;
3795 swap_sym_in
= debug_swap
->swap_sym_in
;
3796 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3797 current_objfile
= pst
->objfile
;
3798 cur_fd
= FDR_IDX (pst
);
3799 fh
= ((cur_fd
== -1)
3801 : debug_info
->fdr
+ cur_fd
);
3804 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3805 processing_gcc_compilation
= 0;
3806 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3810 (*swap_sym_in
) (cur_bfd
,
3811 ((char *) debug_info
->external_sym
3812 + (fh
->isymBase
+ 1) * external_sym_size
),
3814 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3817 /* We indicate that this is a GCC compilation so that certain
3818 features will be enabled in stabsread/dbxread. */
3819 processing_gcc_compilation
= 2;
3823 if (processing_gcc_compilation
!= 0)
3826 /* This symbol table contains stabs-in-ecoff entries. */
3828 /* Parse local symbols first */
3830 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3832 current_objfile
= NULL
;
3835 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3841 (*swap_sym_in
) (cur_bfd
,
3842 (((char *) debug_info
->external_sym
)
3843 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3845 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3847 /* XXX This is a hack. It will go away! */
3848 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3850 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3852 /* We should never get non N_STAB symbols here, but they
3853 should be harmless, so keep process_one_symbol from
3854 complaining about them. */
3855 if (type_code
& N_STAB
)
3857 /* If we found a trailing N_SO with no name, process
3858 it here instead of in process_one_symbol, so we
3859 can keep a handle to its symtab. The symtab
3860 would otherwise be ended twice, once in
3861 process_one_symbol, and once after this loop. */
3862 if (type_code
== N_SO
3864 && previous_stab_code
!= (unsigned char) N_SO
3867 valu
+= ANOFFSET (pst
->section_offsets
,
3868 SECT_OFF_TEXT (pst
->objfile
));
3869 previous_stab_code
= N_SO
;
3870 st
= end_symtab (valu
, pst
->objfile
,
3871 SECT_OFF_TEXT (pst
->objfile
));
3873 last_symtab_ended
= 1;
3877 last_symtab_ended
= 0;
3878 process_one_symbol (type_code
, 0, valu
, name
,
3879 pst
->section_offsets
, pst
->objfile
);
3882 /* Similarly a hack. */
3883 else if (name
[0] == '#')
3885 process_one_symbol (N_SLINE
, 0, valu
, name
,
3886 pst
->section_offsets
, pst
->objfile
);
3888 if (type_code
== N_FUN
)
3890 /* Make up special symbol to contain
3891 procedure specific info */
3892 struct mips_extra_func_info
*e
=
3893 ((struct mips_extra_func_info
*)
3894 obstack_alloc (¤t_objfile
->symbol_obstack
,
3895 sizeof (struct mips_extra_func_info
)));
3896 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3898 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3899 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3900 SYMBOL_CLASS (s
) = LOC_CONST
;
3901 SYMBOL_TYPE (s
) = mdebug_type_void
;
3902 SYMBOL_VALUE (s
) = (long) e
;
3903 e
->pdr
.framereg
= -1;
3904 add_symbol_to_list (s
, &local_symbols
);
3907 else if (sh
.st
== stLabel
)
3909 if (sh
.index
== indexNil
)
3911 /* This is what the gcc2_compiled and __gnu_compiled_*
3912 show up as. So don't complain. */
3917 /* Handle encoded stab line number. */
3918 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3919 record_line (current_subfile
, sh
.index
, valu
);
3922 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3923 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3924 /* These are generated by gcc-2.x, do not complain */
3927 complain (&stab_unknown_complaint
, name
);
3930 if (! last_symtab_ended
)
3932 st
= end_symtab (TEXTHIGH (pst
), pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3936 /* Sort the symbol table now, we are done adding symbols to it.
3937 We must do this before parse_procedure calls lookup_symbol. */
3938 sort_symtab_syms (st
);
3940 /* There used to be a call to sort_blocks here, but this should not
3941 be necessary for stabs symtabs. And as sort_blocks modifies the
3942 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3943 it did the wrong thing if the first procedure in a file was
3944 generated via asm statements. */
3946 /* Fill in procedure info next. */
3950 struct cleanup
*old_chain
;
3956 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3957 old_chain
= make_cleanup (xfree
, pr_block
);
3959 pdr_ptr
= ((char *) debug_info
->external_pdr
3960 + fh
->ipdFirst
* external_pdr_size
);
3961 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3965 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3967 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3969 /* Determine lowest PDR address, the PDRs are not always
3971 if (pdr_in
== pr_block
)
3972 lowest_pdr_addr
= pdr_in
->adr
;
3973 else if (pdr_in
->adr
< lowest_pdr_addr
)
3974 lowest_pdr_addr
= pdr_in
->adr
;
3978 pdr_in_end
= pdr_in
+ fh
->cpd
;
3979 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3980 parse_procedure (pdr_in
, st
, pst
);
3982 do_cleanups (old_chain
);
3987 /* This symbol table contains ordinary ecoff entries. */
3993 /* How many symbols will we need */
3994 /* FIXME, this does not count enum values. */
3995 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3999 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4003 f_max
+= fh
->csym
+ fh
->cpd
;
4004 maxlines
= 2 * fh
->cline
;
4005 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4007 /* The proper language was already determined when building
4008 the psymtab, use it. */
4009 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4012 psymtab_language
= st
->language
;
4014 lines
= LINETABLE (st
);
4016 /* Get a new lexical context */
4018 push_parse_stack ();
4019 top_stack
->cur_st
= st
;
4020 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4022 BLOCK_START (top_stack
->cur_block
) = TEXTLOW (pst
);
4023 BLOCK_END (top_stack
->cur_block
) = 0;
4024 top_stack
->blocktype
= stFile
;
4025 top_stack
->maxsyms
= 2 * f_max
;
4026 top_stack
->cur_type
= 0;
4027 top_stack
->procadr
= 0;
4028 top_stack
->numargs
= 0;
4029 found_ecoff_debugging_info
= 0;
4036 /* Parse local symbols first */
4037 sym_ptr
= ((char *) debug_info
->external_sym
4038 + fh
->isymBase
* external_sym_size
);
4039 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4040 while (sym_ptr
< sym_end
)
4045 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4046 c
= parse_symbol (&sh
,
4047 debug_info
->external_aux
+ fh
->iauxBase
,
4048 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4049 sym_ptr
+= c
* external_sym_size
;
4052 /* Linenumbers. At the end, check if we can save memory.
4053 parse_lines has to look ahead an arbitrary number of PDR
4054 structures, so we swap them all first. */
4058 struct cleanup
*old_chain
;
4064 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4066 old_chain
= make_cleanup (xfree
, pr_block
);
4068 pdr_ptr
= ((char *) debug_info
->external_pdr
4069 + fh
->ipdFirst
* external_pdr_size
);
4070 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4074 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4076 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4078 /* Determine lowest PDR address, the PDRs are not always
4080 if (pdr_in
== pr_block
)
4081 lowest_pdr_addr
= pdr_in
->adr
;
4082 else if (pdr_in
->adr
< lowest_pdr_addr
)
4083 lowest_pdr_addr
= pdr_in
->adr
;
4086 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4087 if (lines
->nitems
< fh
->cline
)
4088 lines
= shrink_linetable (lines
);
4090 /* Fill in procedure info next. */
4092 pdr_in_end
= pdr_in
+ fh
->cpd
;
4093 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4094 parse_procedure (pdr_in
, 0, pst
);
4096 do_cleanups (old_chain
);
4100 LINETABLE (st
) = lines
;
4102 /* .. and our share of externals.
4103 XXX use the global list to speed up things here. how?
4104 FIXME, Maybe quit once we have found the right number of ext's? */
4105 top_stack
->cur_st
= st
;
4106 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4108 top_stack
->blocktype
= stFile
;
4110 = (debug_info
->symbolic_header
.isymMax
4111 + debug_info
->symbolic_header
.ipdMax
4112 + debug_info
->symbolic_header
.iextMax
);
4114 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4115 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4116 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4118 /* If there are undefined symbols, tell the user.
4119 The alpha has an undefined symbol for every symbol that is
4120 from a shared library, so tell the user only if verbose is on. */
4121 if (info_verbose
&& n_undef_symbols
)
4123 printf_filtered ("File %s contains %d unresolved references:",
4124 st
->filename
, n_undef_symbols
);
4125 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4126 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4127 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4134 /* Sort the symbol table now, we are done adding symbols to it. */
4135 sort_symtab_syms (st
);
4140 /* Now link the psymtab and the symtab. */
4143 current_objfile
= NULL
;
4146 /* Ancillary parsing procedures. */
4148 /* Return 1 if the symbol pointed to by SH has a cross reference
4149 to an opaque aggregate type, else 0. */
4152 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4159 if (sh
->index
== indexNil
)
4162 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4163 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4164 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4168 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4169 if (rn
->rfd
== 0xfff)
4170 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4178 /* Lookup the type at relative index RN. Return it in TPP
4179 if found and in any event come up with its name PNAME.
4180 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4181 Return value says how many aux symbols we ate. */
4184 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
, enum type_code type_code
, /* Use to alloc new type if none is found. */
4185 char **pname
, int bigend
, char *sym_name
)
4194 struct mdebug_pending
*pend
;
4196 *tpp
= (struct type
*) NULL
;
4198 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4200 /* Escape index means 'the next one' */
4201 if (rn
->rfd
== 0xfff)
4204 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4211 /* mips cc uses a rf of -1 for opaque struct definitions.
4212 Set TYPE_FLAG_STUB for these types so that check_typedef will
4213 resolve them if the struct gets defined in another compilation unit. */
4216 *pname
= "<undefined>";
4217 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4221 /* mips cc uses an escaped rn->index of 0 for struct return types
4222 of procedures that were compiled without -g. These will always remain
4224 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4226 *pname
= "<undefined>";
4230 /* Find the relative file descriptor and the symbol in it. */
4231 fh
= get_rfd (fd
, rf
);
4232 xref_fd
= fh
- debug_info
->fdr
;
4234 if (rn
->index
>= fh
->csym
)
4236 /* File indirect entry is corrupt. */
4237 *pname
= "<illegal>";
4238 complain (&bad_rfd_entry_complaint
,
4239 sym_name
, xref_fd
, rn
->index
);
4243 /* If we have processed this symbol then we left a forwarding
4244 pointer to the type in the pending list. If not, we`ll put
4245 it in a list of pending types, to be processed later when
4246 the file will be. In any event, we collect the name for the
4249 esh
= ((char *) debug_info
->external_sym
4250 + ((fh
->isymBase
+ rn
->index
)
4251 * debug_swap
->external_sym_size
));
4252 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4254 /* Make sure that this type of cross reference can be handled. */
4255 if ((sh
.sc
!= scInfo
4256 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4257 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4258 && sh
.st
!= stEnum
))
4259 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4261 /* File indirect entry is corrupt. */
4262 *pname
= "<illegal>";
4263 complain (&bad_rfd_entry_complaint
,
4264 sym_name
, xref_fd
, rn
->index
);
4268 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4270 pend
= is_pending_symbol (fh
, esh
);
4275 /* We have not yet seen this type. */
4277 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4281 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4283 a) forward declarations of structs/unions/enums which are not
4284 defined in this compilation unit.
4285 For these the type will be void. This is a bad design decision
4286 as cross referencing across compilation units is impossible
4287 due to the missing name.
4288 b) forward declarations of structs/unions/enums/typedefs which
4289 are defined later in this file or in another file in the same
4290 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4291 Simply cross reference those again to get the true type.
4292 The forward references are not entered in the pending list and
4293 in the symbol table. */
4295 (*debug_swap
->swap_tir_in
) (bigend
,
4296 &(debug_info
->external_aux
4297 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4299 if (tir
.tq0
!= tqNil
)
4300 complain (&illegal_forward_tq0_complaint
, sym_name
);
4304 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4306 *pname
= "<undefined>";
4313 (debug_info
->external_aux
4314 + fh
->iauxBase
+ sh
.index
+ 1),
4315 tpp
, type_code
, pname
,
4316 fh
->fBigendian
, sym_name
);
4320 /* Follow a forward typedef. This might recursively
4321 call cross_ref till we get a non typedef'ed type.
4322 FIXME: This is not correct behaviour, but gdb currently
4323 cannot handle typedefs without type copying. Type
4324 copying is impossible as we might have mutual forward
4325 references between two files and the copied type would not
4326 get filled in when we later parse its definition. */
4327 *tpp
= parse_type (xref_fd
,
4328 debug_info
->external_aux
+ fh
->iauxBase
,
4332 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4333 add_pending (fh
, esh
, *tpp
);
4337 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
4338 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4344 else if (sh
.st
== stTypedef
)
4346 /* Parse the type for a normal typedef. This might recursively call
4347 cross_ref till we get a non typedef'ed type.
4348 FIXME: This is not correct behaviour, but gdb currently
4349 cannot handle typedefs without type copying. But type copying is
4350 impossible as we might have mutual forward references between
4351 two files and the copied type would not get filled in when
4352 we later parse its definition. */
4353 *tpp
= parse_type (xref_fd
,
4354 debug_info
->external_aux
+ fh
->iauxBase
,
4358 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4362 /* Cross reference to a struct/union/enum which is defined
4363 in another file in the same compilation unit but that file
4364 has not been parsed yet.
4365 Initialize the type only, it will be filled in when
4366 it's definition is parsed. */
4367 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4369 add_pending (fh
, esh
, *tpp
);
4372 /* We used one auxent normally, two if we got a "next one" rf. */
4377 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4378 keeping the symtab sorted */
4380 static struct symbol
*
4381 mylookup_symbol (char *name
, register struct block
*block
,
4382 namespace_enum
namespace, enum address_class
class)
4388 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4390 if (SYMBOL_NAME (sym
)[0] == inc
4391 && SYMBOL_NAMESPACE (sym
) == namespace
4392 && SYMBOL_CLASS (sym
) == class
4393 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4397 block
= BLOCK_SUPERBLOCK (block
);
4399 return mylookup_symbol (name
, block
, namespace, class);
4404 /* Add a new symbol S to a block B.
4405 Infrequently, we will need to reallocate the block to make it bigger.
4406 We only detect this case when adding to top_stack->cur_block, since
4407 that's the only time we know how big the block is. FIXME. */
4410 add_symbol (struct symbol
*s
, struct block
*b
)
4412 int nsyms
= BLOCK_NSYMS (b
)++;
4413 struct block
*origb
;
4414 struct parse_stack
*stackp
;
4416 if (b
== top_stack
->cur_block
&&
4417 nsyms
>= top_stack
->maxsyms
)
4419 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
4420 /* In this case shrink_block is actually grow_block, since
4421 BLOCK_NSYMS(b) is larger than its current size. */
4423 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4425 /* Now run through the stack replacing pointers to the
4426 original block. shrink_block has already done this
4427 for the blockvector and BLOCK_FUNCTION. */
4428 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4430 if (stackp
->cur_block
== origb
)
4432 stackp
->cur_block
= b
;
4433 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4437 BLOCK_SYM (b
, nsyms
) = s
;
4440 /* Add a new block B to a symtab S */
4443 add_block (struct block
*b
, struct symtab
*s
)
4445 struct blockvector
*bv
= BLOCKVECTOR (s
);
4447 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4448 (sizeof (struct blockvector
)
4449 + BLOCKVECTOR_NBLOCKS (bv
)
4450 * sizeof (bv
->block
)));
4451 if (bv
!= BLOCKVECTOR (s
))
4452 BLOCKVECTOR (s
) = bv
;
4454 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4457 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4458 MIPS' linenumber encoding might need more than one byte
4459 to describe it, LAST is used to detect these continuation lines.
4461 Combining lines with the same line number seems like a bad idea.
4462 E.g: There could be a line number entry with the same line number after the
4463 prologue and GDB should not ignore it (this is a better way to find
4464 a prologue than mips_skip_prologue).
4465 But due to the compressed line table format there are line number entries
4466 for the same line which are needed to bridge the gap to the next
4467 line number entry. These entries have a bogus address info with them
4468 and we are unable to tell them from intended duplicate line number
4470 This is another reason why -ggdb debugging format is preferable. */
4473 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4475 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4476 Change them to something sensible. */
4480 last
= -2; /* make sure we record first line */
4482 if (last
== lineno
) /* skip continuation lines */
4485 lt
->item
[lt
->nitems
].line
= lineno
;
4486 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4490 /* Sorting and reordering procedures */
4492 /* Blocks with a smaller low bound should come first */
4495 compare_blocks (const void *arg1
, const void *arg2
)
4497 register int addr_diff
;
4498 struct block
**b1
= (struct block
**) arg1
;
4499 struct block
**b2
= (struct block
**) arg2
;
4501 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4503 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4507 /* Sort the blocks of a symtab S.
4508 Reorder the blocks in the blockvector by code-address,
4509 as required by some MI search routines */
4512 sort_blocks (struct symtab
*s
)
4514 struct blockvector
*bv
= BLOCKVECTOR (s
);
4516 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4519 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4520 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4521 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4522 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4526 * This is very unfortunate: normally all functions are compiled in
4527 * the order they are found, but if the file is compiled -O3 things
4528 * are very different. It would be nice to find a reliable test
4529 * to detect -O3 images in advance.
4531 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4532 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4533 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4534 sizeof (struct block
*),
4538 register CORE_ADDR high
= 0;
4539 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4541 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4542 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4543 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4544 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4547 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4548 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4550 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4551 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4552 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4553 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4557 /* Constructor/restructor/destructor procedures */
4559 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4560 MAXSYMS and linenumbers MAXLINES we'll put in it */
4562 static struct symtab
*
4563 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4565 struct symtab
*s
= allocate_symtab (name
, objfile
);
4567 LINETABLE (s
) = new_linetable (maxlines
);
4569 /* All symtabs must have at least two blocks */
4570 BLOCKVECTOR (s
) = new_bvect (2);
4571 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4572 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4573 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4574 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4576 s
->free_code
= free_linetable
;
4577 s
->debugformat
= obsavestring ("ECOFF", 5,
4578 &objfile
->symbol_obstack
);
4582 /* Allocate a new partial_symtab NAME */
4584 static struct partial_symtab
*
4585 new_psymtab (char *name
, struct objfile
*objfile
)
4587 struct partial_symtab
*psymtab
;
4589 psymtab
= allocate_psymtab (name
, objfile
);
4590 psymtab
->section_offsets
= objfile
->section_offsets
;
4592 /* Keep a backpointer to the file's symbols */
4594 psymtab
->read_symtab_private
= ((char *)
4595 obstack_alloc (&objfile
->psymbol_obstack
,
4596 sizeof (struct symloc
)));
4597 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4598 CUR_BFD (psymtab
) = cur_bfd
;
4599 DEBUG_SWAP (psymtab
) = debug_swap
;
4600 DEBUG_INFO (psymtab
) = debug_info
;
4601 PENDING_LIST (psymtab
) = pending_list
;
4603 /* The way to turn this into a symtab is to call... */
4604 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4609 /* Allocate a linetable array of the given SIZE. Since the struct
4610 already includes one item, we subtract one when calculating the
4611 proper size to allocate. */
4613 static struct linetable
*
4614 new_linetable (int size
)
4616 struct linetable
*l
;
4618 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4619 l
= (struct linetable
*) xmalloc (size
);
4624 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4625 I am not so sure about the 3.4 ones.
4627 Since the struct linetable already includes one item, we subtract one when
4628 calculating the proper size to allocate. */
4630 static struct linetable
*
4631 shrink_linetable (struct linetable
*lt
)
4634 return (struct linetable
*) xrealloc ((void *) lt
,
4635 (sizeof (struct linetable
)
4637 * sizeof (lt
->item
))));
4640 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4642 static struct blockvector
*
4643 new_bvect (int nblocks
)
4645 struct blockvector
*bv
;
4648 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4649 bv
= (struct blockvector
*) xzalloc (size
);
4651 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4656 /* Allocate and zero a new block of MAXSYMS symbols */
4658 static struct block
*
4659 new_block (int maxsyms
)
4661 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4663 return (struct block
*) xzalloc (size
);
4666 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4667 Shrink_block can also be used by add_symbol to grow a block. */
4669 static struct block
*
4670 shrink_block (struct block
*b
, struct symtab
*s
)
4673 struct blockvector
*bv
= BLOCKVECTOR (s
);
4676 /* Just reallocate it and fix references to the old one */
4678 new = (struct block
*) xrealloc ((void *) b
,
4679 (sizeof (struct block
)
4680 + ((BLOCK_NSYMS (b
) - 1)
4681 * sizeof (struct symbol
*))));
4683 /* Should chase pointers to old one. Fortunately, that`s just
4684 the block`s function and inferior blocks */
4685 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4686 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4687 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4688 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4689 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4690 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4691 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4695 /* Create a new symbol with printname NAME */
4697 static struct symbol
*
4698 new_symbol (char *name
)
4700 struct symbol
*s
= ((struct symbol
*)
4701 obstack_alloc (¤t_objfile
->symbol_obstack
,
4702 sizeof (struct symbol
)));
4704 memset (s
, 0, sizeof (*s
));
4705 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4706 ¤t_objfile
->symbol_obstack
);
4707 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4708 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4712 /* Create a new type with printname NAME */
4714 static struct type
*
4715 new_type (char *name
)
4719 t
= alloc_type (current_objfile
);
4720 TYPE_NAME (t
) = name
;
4721 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4725 /* Read ECOFF debugging information from a BFD section. This is
4726 called from elfread.c. It parses the section into a
4727 ecoff_debug_info struct, and then lets the rest of the file handle
4731 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4732 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4734 bfd
*abfd
= objfile
->obfd
;
4735 struct ecoff_debug_info
*info
;
4737 info
= ((struct ecoff_debug_info
*)
4738 obstack_alloc (&objfile
->psymbol_obstack
,
4739 sizeof (struct ecoff_debug_info
)));
4741 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4742 error ("Error reading ECOFF debugging information: %s",
4743 bfd_errmsg (bfd_get_error ()));
4745 mdebug_build_psymtabs (objfile
, swap
, info
);
4749 /* Things used for calling functions in the inferior.
4750 These functions are exported to our companion
4751 mips-tdep.c file and are here because they play
4752 with the symbol-table explicitly. */
4754 /* Sigtramp: make sure we have all the necessary information
4755 about the signal trampoline code. Since the official code
4756 from MIPS does not do so, we make up that information ourselves.
4757 If they fix the library (unlikely) this code will neutralize itself. */
4759 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4760 here because it calls functions defined in this file, but perhaps
4761 this could be handled in a better way. Only compile it in when
4762 tm-mips.h is included. */
4767 fixup_sigtramp (void)
4771 struct block
*b
, *b0
= NULL
;
4773 sigtramp_address
= -1;
4775 /* We have to handle the following cases here:
4776 a) The Mips library has a sigtramp label within sigvec.
4777 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4778 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4781 b0
= SYMBOL_BLOCK_VALUE (s
);
4782 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4786 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4787 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4790 /* But maybe this program uses its own version of sigvec */
4794 /* Did we or MIPSco fix the library ? */
4795 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4797 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4798 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4802 sigtramp_address
= SYMBOL_VALUE (s
);
4803 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4805 /* But what symtab does it live in ? */
4806 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4809 * Ok, there goes the fix: turn it into a procedure, with all the
4810 * needed info. Note we make it a nested procedure of sigvec,
4811 * which is the way the (assembly) code is actually written.
4813 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4814 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4815 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4817 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4819 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4821 SYMBOL_BLOCK_VALUE (s
) = b
;
4822 BLOCK_START (b
) = sigtramp_address
;
4823 BLOCK_END (b
) = sigtramp_end
;
4824 BLOCK_FUNCTION (b
) = s
;
4825 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4829 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4831 struct mips_extra_func_info
*e
=
4832 ((struct mips_extra_func_info
*)
4833 xzalloc (sizeof (struct mips_extra_func_info
)));
4835 e
->numargs
= 0; /* the kernel thinks otherwise */
4836 e
->pdr
.frameoffset
= 32;
4837 e
->pdr
.framereg
= SP_REGNUM
;
4838 /* Note that setting pcreg is no longer strictly necessary as
4839 mips_frame_saved_pc is now aware of signal handler frames. */
4840 e
->pdr
.pcreg
= PC_REGNUM
;
4841 e
->pdr
.regmask
= -2;
4842 /* Offset to saved r31, in the sigtramp case the saved registers
4843 are above the frame in the sigcontext.
4844 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4845 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4846 and 32 * 4 bytes for the floating point registers. */
4847 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4848 e
->pdr
.fregmask
= -1;
4849 /* Offset to saved f30 (first saved *double* register). */
4850 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4851 e
->pdr
.isym
= (long) s
;
4852 e
->pdr
.adr
= sigtramp_address
;
4854 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4855 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4856 SYMBOL_VALUE (s
) = (long) e
;
4857 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4858 SYMBOL_CLASS (s
) = LOC_CONST
;
4859 SYMBOL_TYPE (s
) = mdebug_type_void
;
4860 current_objfile
= NULL
;
4863 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4866 #endif /* TM_MIPS_H */
4869 _initialize_mdebugread (void)
4872 init_type (TYPE_CODE_VOID
, 1,
4874 "void", (struct objfile
*) NULL
);
4876 init_type (TYPE_CODE_INT
, 1,
4878 "char", (struct objfile
*) NULL
);
4879 mdebug_type_unsigned_char
=
4880 init_type (TYPE_CODE_INT
, 1,
4882 "unsigned char", (struct objfile
*) NULL
);
4884 init_type (TYPE_CODE_INT
, 2,
4886 "short", (struct objfile
*) NULL
);
4887 mdebug_type_unsigned_short
=
4888 init_type (TYPE_CODE_INT
, 2,
4890 "unsigned short", (struct objfile
*) NULL
);
4891 mdebug_type_int_32
=
4892 init_type (TYPE_CODE_INT
, 4,
4894 "int", (struct objfile
*) NULL
);
4895 mdebug_type_unsigned_int_32
=
4896 init_type (TYPE_CODE_INT
, 4,
4898 "unsigned int", (struct objfile
*) NULL
);
4899 mdebug_type_int_64
=
4900 init_type (TYPE_CODE_INT
, 8,
4902 "int", (struct objfile
*) NULL
);
4903 mdebug_type_unsigned_int_64
=
4904 init_type (TYPE_CODE_INT
, 8,
4906 "unsigned int", (struct objfile
*) NULL
);
4907 mdebug_type_long_32
=
4908 init_type (TYPE_CODE_INT
, 4,
4910 "long", (struct objfile
*) NULL
);
4911 mdebug_type_unsigned_long_32
=
4912 init_type (TYPE_CODE_INT
, 4,
4914 "unsigned long", (struct objfile
*) NULL
);
4915 mdebug_type_long_64
=
4916 init_type (TYPE_CODE_INT
, 8,
4918 "long", (struct objfile
*) NULL
);
4919 mdebug_type_unsigned_long_64
=
4920 init_type (TYPE_CODE_INT
, 8,
4922 "unsigned long", (struct objfile
*) NULL
);
4923 mdebug_type_long_long_64
=
4924 init_type (TYPE_CODE_INT
, 8,
4926 "long long", (struct objfile
*) NULL
);
4927 mdebug_type_unsigned_long_long_64
=
4928 init_type (TYPE_CODE_INT
, 8,
4930 "unsigned long long", (struct objfile
*) NULL
);
4931 mdebug_type_adr_32
=
4932 init_type (TYPE_CODE_PTR
, 4,
4934 "adr_32", (struct objfile
*) NULL
);
4935 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4936 mdebug_type_adr_64
=
4937 init_type (TYPE_CODE_PTR
, 8,
4939 "adr_64", (struct objfile
*) NULL
);
4940 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4942 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4944 "float", (struct objfile
*) NULL
);
4945 mdebug_type_double
=
4946 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4948 "double", (struct objfile
*) NULL
);
4949 mdebug_type_complex
=
4950 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4952 "complex", (struct objfile
*) NULL
);
4953 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4954 mdebug_type_double_complex
=
4955 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4957 "double complex", (struct objfile
*) NULL
);
4958 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4960 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4962 mdebug_type_string
=
4963 init_type (TYPE_CODE_STRING
,
4964 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4966 (struct objfile
*) NULL
);
4968 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4969 good? Would we be better off with TYPE_CODE_ERROR? Should
4970 TYPE_CODE_ERROR print things in hex if it knows the size? */
4971 mdebug_type_fixed_dec
=
4972 init_type (TYPE_CODE_INT
,
4973 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4975 (struct objfile
*) NULL
);
4977 mdebug_type_float_dec
=
4978 init_type (TYPE_CODE_ERROR
,
4979 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4980 0, "floating decimal",
4981 (struct objfile
*) NULL
);
4983 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4984 "<function, no debug info>", NULL
);
4985 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4986 nodebug_var_symbol_type
=
4987 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4988 "<variable, no debug info>", NULL
);