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 void add_pending (FDR
*, char *, struct type
*);
332 static struct mdebug_pending
*is_pending_symbol (FDR
*, char *);
334 static void pop_parse_stack (void);
336 static void push_parse_stack (void);
338 static char *fdr_name (FDR
*);
340 static void mdebug_psymtab_to_symtab (struct partial_symtab
*);
343 upgrade_type (int, struct type
**, int, union aux_ext
*, int, char *);
345 static void parse_partial_symbols (struct objfile
*);
347 static FDR
* get_rfd (int, int);
349 static int has_opaque_xref (FDR
*, SYMR
*);
352 cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
353 char **, int, char *);
355 static struct symbol
*new_symbol (char *);
357 static struct type
*new_type (char *);
359 static struct block
*new_block (int);
361 static struct symtab
*new_symtab (char *, int, int, struct objfile
*);
363 static struct linetable
*new_linetable (int);
365 static struct blockvector
*new_bvect (int);
368 parse_symbol (SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*,
371 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
374 static struct symbol
*mylookup_symbol (char *, struct block
*, namespace_enum
,
377 static struct block
*shrink_block (struct block
*, struct symtab
*);
379 static PTR
xzalloc (unsigned int);
381 static void sort_blocks (struct symtab
*);
383 static int compare_blocks (const PTR
, const PTR
);
385 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
387 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
389 static void add_block (struct block
*, struct symtab
*);
391 static void add_symbol (struct symbol
*, struct block
*);
393 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
395 static struct linetable
*shrink_linetable (struct linetable
*);
398 handle_psymbol_enumerators (struct objfile
*, FDR
*, int, CORE_ADDR
);
400 static char *mdebug_next_symbol_text (struct objfile
*);
402 /* Address bounds for the signal trampoline in inferior, if any */
404 CORE_ADDR sigtramp_address
, sigtramp_end
;
406 /* Allocate zeroed memory */
409 xzalloc (unsigned int size
)
411 PTR p
= xmalloc (size
);
417 /* Exported procedure: Builds a symtab from the PST partial one.
418 Restores the environment in effect when PST was created, delegates
419 most of the work to an ancillary procedure, and sorts
420 and reorders the symtab list at the end */
423 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
431 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
432 gdb_flush (gdb_stdout
);
435 next_symbol_text_func
= mdebug_next_symbol_text
;
437 psymtab_to_symtab_1 (pst
, pst
->filename
);
439 /* Match with global symbols. This only needs to be done once,
440 after all of the symtabs and dependencies have been read in. */
441 scan_file_globals (pst
->objfile
);
444 printf_filtered ("done.\n");
447 /* File-level interface functions */
449 /* Find a file descriptor given its index RF relative to a file CF */
452 get_rfd (int cf
, int rf
)
458 fdrs
= debug_info
->fdr
;
460 /* Object files do not have the RFD table, all refs are absolute */
463 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
464 ((char *) debug_info
->external_rfd
466 * debug_swap
->external_rfd_size
)),
471 /* Return a safer print NAME for a file descriptor */
477 return "<stripped file>";
480 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
484 /* Read in and parse the symtab of the file OBJFILE. Symbols from
485 different sections are relocated via the SECTION_OFFSETS. */
488 mdebug_build_psymtabs (struct objfile
*objfile
,
489 const struct ecoff_debug_swap
*swap
,
490 struct ecoff_debug_info
*info
)
492 cur_bfd
= objfile
->obfd
;
496 stabsread_new_init ();
497 buildsym_new_init ();
498 free_header_files ();
499 init_header_files ();
501 /* Make sure all the FDR information is swapped in. */
502 if (info
->fdr
== (FDR
*) NULL
)
508 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
509 (info
->symbolic_header
.ifdMax
511 fdr_src
= info
->external_fdr
;
513 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
515 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
516 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
519 parse_partial_symbols (objfile
);
521 /* Take the text ranges the partial symbol scanner computed for each
522 of the psymtabs and convert it into the canonical form for
525 struct partial_symtab
*p
;
527 ALL_OBJFILE_PSYMTABS (objfile
, p
)
529 p
->textlow
= TEXTLOW (p
);
530 p
->texthigh
= TEXTHIGH (p
);
535 /* Check to make sure file was compiled with -g. If not, warn the
536 user of this limitation. */
537 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
539 if (max_gdbinfo
== 0)
540 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
542 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
543 gdb_flush (gdb_stdout
);
548 /* Local utilities */
550 /* Map of FDR indexes to partial symtabs */
554 struct partial_symtab
*pst
; /* the psymtab proper */
555 long n_globals
; /* exported globals (external symbols) */
556 long globals_offset
; /* cumulative */
560 /* Utility stack, used to nest procedures and blocks properly.
561 It is a doubly linked list, to avoid too many alloc/free.
562 Since we might need it quite a few times it is NOT deallocated
565 static struct parse_stack
567 struct parse_stack
*next
, *prev
;
568 struct symtab
*cur_st
; /* Current symtab. */
569 struct block
*cur_block
; /* Block in it. */
571 /* What are we parsing. stFile, or stBlock are for files and
572 blocks. stProc or stStaticProc means we have seen the start of a
573 procedure, but not the start of the block within in. When we see
574 the start of that block, we change it to stNil, without pushing a
575 new block, i.e. stNil means both a procedure and a block. */
579 int maxsyms
; /* Max symbols in this block. */
580 struct type
*cur_type
; /* Type we parse fields for. */
581 int cur_field
; /* Field number in cur_type. */
582 CORE_ADDR procadr
; /* Start addres of this procedure */
583 int numargs
; /* Its argument count */
586 *top_stack
; /* Top stack ptr */
589 /* Enter a new lexical context */
592 push_parse_stack (void)
594 struct parse_stack
*new;
596 /* Reuse frames if possible */
597 if (top_stack
&& top_stack
->prev
)
598 new = top_stack
->prev
;
600 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
601 /* Initialize new frame with previous content */
604 register struct parse_stack
*prev
= new->prev
;
607 top_stack
->prev
= new;
609 new->next
= top_stack
;
614 /* Exit a lexical context */
617 pop_parse_stack (void)
622 top_stack
= top_stack
->next
;
626 /* Cross-references might be to things we haven't looked at
627 yet, e.g. type references. To avoid too many type
628 duplications we keep a quick fixup table, an array
629 of lists of references indexed by file descriptor */
631 struct mdebug_pending
633 struct mdebug_pending
*next
; /* link */
634 char *s
; /* the unswapped symbol */
635 struct type
*t
; /* its partial type descriptor */
639 /* The pending information is kept for an entire object file, and used
640 to be in the sym_private field. I took it out when I split
641 mdebugread from mipsread, because this might not be the only type
642 of symbols read from an object file. Instead, we allocate the
643 pending information table when we create the partial symbols, and
644 we store a pointer to the single table in each psymtab. */
646 static struct mdebug_pending
**pending_list
;
648 /* Check whether we already saw symbol SH in file FH */
650 static struct mdebug_pending
*
651 is_pending_symbol (FDR
*fh
, char *sh
)
653 int f_idx
= fh
- debug_info
->fdr
;
654 register struct mdebug_pending
*p
;
656 /* Linear search is ok, list is typically no more than 10 deep */
657 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
663 /* Add a new symbol SH of type T */
666 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
668 int f_idx
= fh
- debug_info
->fdr
;
669 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
671 /* Make sure we do not make duplicates */
674 p
= ((struct mdebug_pending
*)
675 obstack_alloc (¤t_objfile
->psymbol_obstack
,
676 sizeof (struct mdebug_pending
)));
679 p
->next
= pending_list
[f_idx
];
680 pending_list
[f_idx
] = p
;
685 /* Parsing Routines proper. */
687 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
688 For blocks, procedures and types we open a new lexical context.
689 This is basically just a big switch on the symbol's type. Argument
690 AX is the base pointer of aux symbols for this file (fh->iauxBase).
691 EXT_SH points to the unswapped symbol, which is needed for struct,
692 union, etc., types; it is NULL for an EXTR. BIGEND says whether
693 aux symbols are big-endian or little-endian. Return count of
694 SYMR's handled (normally one). */
697 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
698 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
700 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
701 void (*const swap_sym_in
) (bfd
*, PTR
, SYMR
*) = debug_swap
->swap_sym_in
;
705 struct mdebug_pending
*pend
;
709 enum address_class
class;
711 long svalue
= sh
->value
;
714 if (ext_sh
== (char *) NULL
)
715 name
= debug_info
->ssext
+ sh
->iss
;
717 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
723 /* Do not relocate relative values.
724 The value of a stEnd symbol is the displacement from the
725 corresponding start symbol value.
726 The value of a stBlock symbol is the displacement from the
727 procedure address. */
728 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
729 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
736 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
740 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
749 case stGlobal
: /* external symbol, goes into global block */
751 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
753 s
= new_symbol (name
);
754 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
757 case stStatic
: /* static data, goes into current block. */
759 b
= top_stack
->cur_block
;
760 s
= new_symbol (name
);
761 if (SC_IS_COMMON (sh
->sc
))
763 /* It is a FORTRAN common block. At least for SGI Fortran the
764 address is not in the symbol; we need to fix it later in
765 scan_file_globals. */
766 int bucket
= hashname (SYMBOL_NAME (s
));
767 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
768 global_sym_chain
[bucket
] = s
;
771 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
774 case stLocal
: /* local variable, goes into current block */
775 if (sh
->sc
== scRegister
)
777 class = LOC_REGISTER
;
778 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
782 b
= top_stack
->cur_block
;
783 s
= new_symbol (name
);
784 SYMBOL_VALUE (s
) = svalue
;
786 data
: /* Common code for symbols describing data */
787 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
788 SYMBOL_CLASS (s
) = class;
791 /* Type could be missing if file is compiled without debugging info. */
792 if (SC_IS_UNDEF (sh
->sc
)
793 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
794 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
796 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
797 /* Value of a data symbol is its memory address */
800 case stParam
: /* arg to procedure, goes into current block */
802 found_ecoff_debugging_info
= 1;
803 top_stack
->numargs
++;
805 /* Special GNU C++ name. */
806 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
807 name
= "this"; /* FIXME, not alloc'd in obstack */
808 s
= new_symbol (name
);
810 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
814 /* Pass by value in register. */
815 SYMBOL_CLASS (s
) = LOC_REGPARM
;
816 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
819 /* Pass by reference on stack. */
820 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
823 /* Pass by reference in register. */
824 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
825 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
828 /* Pass by value on stack. */
829 SYMBOL_CLASS (s
) = LOC_ARG
;
832 SYMBOL_VALUE (s
) = svalue
;
833 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
834 add_symbol (s
, top_stack
->cur_block
);
837 case stLabel
: /* label, goes into current block */
838 s
= new_symbol (name
);
839 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
840 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
841 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
842 SYMBOL_TYPE (s
) = mdebug_type_int
;
843 add_symbol (s
, top_stack
->cur_block
);
846 case stProc
: /* Procedure, usually goes into global block */
847 case stStaticProc
: /* Static procedure, goes into current block */
848 s
= new_symbol (name
);
849 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
850 SYMBOL_CLASS (s
) = LOC_BLOCK
;
851 /* Type of the return value */
852 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
856 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
857 if (STREQ (name
, "malloc") && t
->code
== TYPE_CODE_VOID
)
859 /* I don't know why, but, at least under Alpha GNU/Linux,
860 when linking against a malloc without debugging
861 symbols, its read as a function returning void---this
862 is bad because it means we cannot call functions with
863 string arguments interactively; i.e., "call
864 printf("howdy\n")" would fail with the error message
865 "program has no memory available". To avoid this, we
866 patch up the type and make it void*
867 instead. (davidm@azstarnet.com)
869 t
= make_pointer_type (t
, NULL
);
872 b
= top_stack
->cur_block
;
873 if (sh
->st
== stProc
)
875 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
876 /* The next test should normally be true, but provides a
877 hook for nested functions (which we don't want to make
879 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
880 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
881 /* Irix 5 sometimes has duplicate names for the same
882 function. We want to add such names up at the global
883 level, not as a nested function. */
884 else if (sh
->value
== top_stack
->procadr
)
885 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
889 /* Make a type for the procedure itself */
890 SYMBOL_TYPE (s
) = lookup_function_type (t
);
892 /* Create and enter a new lexical context */
893 b
= new_block (top_stack
->maxsyms
);
894 SYMBOL_BLOCK_VALUE (s
) = b
;
895 BLOCK_FUNCTION (b
) = s
;
896 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
897 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
898 add_block (b
, top_stack
->cur_st
);
900 /* Not if we only have partial info */
901 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
905 top_stack
->cur_block
= b
;
906 top_stack
->blocktype
= sh
->st
;
907 top_stack
->cur_type
= SYMBOL_TYPE (s
);
908 top_stack
->cur_field
= -1;
909 top_stack
->procadr
= sh
->value
;
910 top_stack
->numargs
= 0;
913 /* Beginning of code for structure, union, and enum definitions.
914 They all share a common set of local variables, defined here. */
916 enum type_code type_code
;
922 case stStruct
: /* Start a block defining a struct type */
923 type_code
= TYPE_CODE_STRUCT
;
924 goto structured_common
;
926 case stUnion
: /* Start a block defining a union type */
927 type_code
= TYPE_CODE_UNION
;
928 goto structured_common
;
930 case stEnum
: /* Start a block defining an enum type */
931 type_code
= TYPE_CODE_ENUM
;
932 goto structured_common
;
934 case stBlock
: /* Either a lexical block, or some type */
935 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
936 goto case_stBlock_code
; /* Lexical block */
938 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
940 /* Common code for handling struct, union, enum, and/or as-yet-
941 unknown-type blocks of info about structured data. `type_code'
942 has been set to the proper TYPE_CODE, if we know it. */
944 found_ecoff_debugging_info
= 1;
946 top_stack
->blocktype
= stBlock
;
948 /* First count the number of fields and the highest value. */
951 for (ext_tsym
= ext_sh
+ external_sym_size
;
953 ext_tsym
+= external_sym_size
)
957 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
965 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
967 /* If the type of the member is Nil (or Void),
968 without qualifiers, assume the tag is an
970 Alpha cc -migrate enums are recognized by a zero
971 index and a zero symbol value.
972 DU 4.0 cc enums are recognized by a member type of
973 btEnum without qualifiers and a zero symbol value. */
974 if (tsym
.index
== indexNil
975 || (tsym
.index
== 0 && sh
->value
== 0))
976 type_code
= TYPE_CODE_ENUM
;
979 (*debug_swap
->swap_tir_in
) (bigend
,
980 &ax
[tsym
.index
].a_ti
,
982 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
983 || (tir
.bt
== btEnum
&& sh
->value
== 0))
985 type_code
= TYPE_CODE_ENUM
;
989 if (tsym
.value
> max_value
)
990 max_value
= tsym
.value
;
999 /* This is a no-op; is it trying to tell us something
1000 we should be checking? */
1001 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
1003 if (tsym
.index
!= 0)
1005 /* This is something like a struct within a
1006 struct. Skip over the fields of the inner
1007 struct. The -1 is because the for loop will
1008 increment ext_tsym. */
1009 ext_tsym
= ((char *) debug_info
->external_sym
1010 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
1011 * external_sym_size
));
1017 /* mips cc puts out a typedef for struct x if it is not yet
1018 defined when it encounters
1019 struct y { struct x *xp; };
1024 /* Irix5 cc puts out a stIndirect for struct x if it is not
1025 yet defined when it encounters
1026 struct y { struct x *xp; };
1031 complain (&block_member_complaint
, tsym
.st
);
1036 /* In an stBlock, there is no way to distinguish structs,
1037 unions, and enums at this point. This is a bug in the
1038 original design (that has been fixed with the recent
1039 addition of the stStruct, stUnion, and stEnum symbol
1040 types.) The way you can tell is if/when you see a variable
1041 or field of that type. In that case the variable's type
1042 (in the AUX table) says if the type is struct, union, or
1043 enum, and points back to the stBlock here. So you can
1044 patch the tag kind up later - but only if there actually is
1045 a variable or field of that type.
1047 So until we know for sure, we will guess at this point.
1049 If the first member has index==indexNil or a void type,
1050 assume we have an enumeration.
1051 Otherwise, if there is more than one member, and all
1052 the members have offset 0, assume we have a union.
1053 Otherwise, assume we have a struct.
1055 The heuristic could guess wrong in the case of of an
1056 enumeration with no members or a union with one (or zero)
1057 members, or when all except the last field of a struct have
1058 width zero. These are uncommon and/or illegal situations,
1059 and in any case guessing wrong probably doesn't matter
1062 But if we later do find out we were wrong, we fixup the tag
1063 kind. Members of an enumeration must be handled
1064 differently from struct/union fields, and that is harder to
1065 patch up, but luckily we shouldn't need to. (If there are
1066 any enumeration members, we can tell for sure it's an enum
1069 if (type_code
== TYPE_CODE_UNDEF
)
1071 if (nfields
> 1 && max_value
== 0)
1072 type_code
= TYPE_CODE_UNION
;
1074 type_code
= TYPE_CODE_STRUCT
;
1077 /* Create a new type or use the pending type. */
1078 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1079 if (pend
== (struct mdebug_pending
*) NULL
)
1081 t
= new_type (NULL
);
1082 add_pending (cur_fdr
, ext_sh
, t
);
1087 /* Do not set the tag name if it is a compiler generated tag name
1088 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1089 Alpha cc puts out an sh->iss of zero for those. */
1090 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1091 TYPE_TAG_NAME (t
) = NULL
;
1093 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1096 TYPE_CODE (t
) = type_code
;
1097 TYPE_LENGTH (t
) = sh
->value
;
1098 TYPE_NFIELDS (t
) = nfields
;
1099 TYPE_FIELDS (t
) = f
= ((struct field
*)
1101 nfields
* sizeof (struct field
)));
1103 if (type_code
== TYPE_CODE_ENUM
)
1105 int unsigned_enum
= 1;
1107 /* This is a non-empty enum. */
1109 /* DEC c89 has the number of enumerators in the sh.value field,
1110 not the type length, so we have to compensate for that
1111 incompatibility quirk.
1112 This might do the wrong thing for an enum with one or two
1113 enumerators and gcc -gcoff -fshort-enums, but these cases
1114 are hopefully rare enough.
1115 Alpha cc -migrate has a sh.value field of zero, we adjust
1117 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1118 || TYPE_LENGTH (t
) == 0)
1119 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1120 for (ext_tsym
= ext_sh
+ external_sym_size
;
1122 ext_tsym
+= external_sym_size
)
1125 struct symbol
*enum_sym
;
1127 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1129 if (tsym
.st
!= stMember
)
1132 FIELD_BITPOS (*f
) = tsym
.value
;
1133 FIELD_TYPE (*f
) = t
;
1134 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1135 FIELD_BITSIZE (*f
) = 0;
1137 enum_sym
= ((struct symbol
*)
1138 obstack_alloc (¤t_objfile
->symbol_obstack
,
1139 sizeof (struct symbol
)));
1140 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1141 SYMBOL_NAME (enum_sym
) =
1142 obsavestring (f
->name
, strlen (f
->name
),
1143 ¤t_objfile
->symbol_obstack
);
1144 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1145 SYMBOL_TYPE (enum_sym
) = t
;
1146 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1147 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1148 if (SYMBOL_VALUE (enum_sym
) < 0)
1150 add_symbol (enum_sym
, top_stack
->cur_block
);
1152 /* Skip the stMembers that we've handled. */
1157 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1159 /* make this the current type */
1160 top_stack
->cur_type
= t
;
1161 top_stack
->cur_field
= 0;
1163 /* Do not create a symbol for alpha cc unnamed structs. */
1167 /* gcc puts out an empty struct for an opaque struct definitions,
1168 do not create a symbol for it either. */
1169 if (TYPE_NFIELDS (t
) == 0)
1171 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1175 s
= new_symbol (name
);
1176 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1177 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1178 SYMBOL_VALUE (s
) = 0;
1179 SYMBOL_TYPE (s
) = t
;
1180 add_symbol (s
, top_stack
->cur_block
);
1183 /* End of local variables shared by struct, union, enum, and
1184 block (as yet unknown struct/union/enum) processing. */
1188 found_ecoff_debugging_info
= 1;
1189 /* beginnning of (code) block. Value of symbol
1190 is the displacement from procedure start */
1191 push_parse_stack ();
1193 /* Do not start a new block if this is the outermost block of a
1194 procedure. This allows the LOC_BLOCK symbol to point to the
1195 block with the local variables, so funcname::var works. */
1196 if (top_stack
->blocktype
== stProc
1197 || top_stack
->blocktype
== stStaticProc
)
1199 top_stack
->blocktype
= stNil
;
1203 top_stack
->blocktype
= stBlock
;
1204 b
= new_block (top_stack
->maxsyms
);
1205 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1206 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1207 top_stack
->cur_block
= b
;
1208 add_block (b
, top_stack
->cur_st
);
1211 case stEnd
: /* end (of anything) */
1212 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1214 /* Finished with type */
1215 top_stack
->cur_type
= 0;
1217 else if (sh
->sc
== scText
&&
1218 (top_stack
->blocktype
== stProc
||
1219 top_stack
->blocktype
== stStaticProc
))
1221 /* Finished with procedure */
1222 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1223 struct mips_extra_func_info
*e
;
1225 struct type
*ftype
= top_stack
->cur_type
;
1228 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1230 /* Make up special symbol to contain procedure specific info */
1231 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1232 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1233 SYMBOL_CLASS (s
) = LOC_CONST
;
1234 SYMBOL_TYPE (s
) = mdebug_type_void
;
1235 e
= ((struct mips_extra_func_info
*)
1236 obstack_alloc (¤t_objfile
->symbol_obstack
,
1237 sizeof (struct mips_extra_func_info
)));
1238 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
1239 SYMBOL_VALUE (s
) = (long) e
;
1240 e
->numargs
= top_stack
->numargs
;
1241 e
->pdr
.framereg
= -1;
1242 add_symbol (s
, top_stack
->cur_block
);
1244 /* Reallocate symbols, saving memory */
1245 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1247 /* f77 emits proc-level with address bounds==[0,0],
1248 So look for such child blocks, and patch them. */
1249 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1251 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1252 if (BLOCK_SUPERBLOCK (b_bad
) == b
1253 && BLOCK_START (b_bad
) == top_stack
->procadr
1254 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1256 BLOCK_START (b_bad
) = BLOCK_START (b
);
1257 BLOCK_END (b_bad
) = BLOCK_END (b
);
1261 if (TYPE_NFIELDS (ftype
) <= 0)
1263 /* No parameter type information is recorded with the function's
1264 type. Set that from the type of the parameter symbols. */
1265 int nparams
= top_stack
->numargs
;
1271 TYPE_NFIELDS (ftype
) = nparams
;
1272 TYPE_FIELDS (ftype
) = (struct field
*)
1273 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1275 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1277 sym
= BLOCK_SYM (b
, i
);
1278 switch (SYMBOL_CLASS (sym
))
1283 case LOC_REGPARM_ADDR
:
1284 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1285 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1295 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1297 /* End of (code) block. The value of the symbol is the
1298 displacement from the procedure`s start address of the
1299 end of this block. */
1300 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1301 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1303 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1305 /* End of outermost block. Pop parse stack and ignore. The
1306 following stEnd of stProc will take care of the block. */
1309 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1311 /* End of file. Pop parse stack and ignore. Higher
1312 level code deals with this. */
1316 complain (&stEnd_complaint
, sh
->sc
);
1318 pop_parse_stack (); /* restore previous lexical context */
1321 case stMember
: /* member of struct or union */
1322 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1323 FIELD_NAME (*f
) = name
;
1324 FIELD_BITPOS (*f
) = sh
->value
;
1326 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1327 FIELD_BITSIZE (*f
) = bitsize
;
1330 case stIndirect
: /* forward declaration on Irix5 */
1331 /* Forward declarations from Irix5 cc are handled by cross_ref,
1335 case stTypedef
: /* type definition */
1336 found_ecoff_debugging_info
= 1;
1338 /* Typedefs for forward declarations and opaque structs from alpha cc
1339 are handled by cross_ref, skip them. */
1343 /* Parse the type or use the pending type. */
1344 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1345 if (pend
== (struct mdebug_pending
*) NULL
)
1347 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1348 add_pending (cur_fdr
, ext_sh
, t
);
1353 /* mips cc puts out a typedef with the name of the struct for forward
1354 declarations. These should not go into the symbol table and
1355 TYPE_NAME should not be set for them.
1356 They can't be distinguished from an intentional typedef to
1357 the same name however:
1359 struct x { int ix; int jx; };
1363 struct xx {int ixx; int jxx; };
1364 generates a cross referencing stTypedef for x and xx.
1365 The user visible effect of this is that the type of a pointer
1366 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1367 The problem is fixed with alpha cc and Irix5 cc. */
1369 /* However if the typedef cross references to an opaque aggregate, it
1370 is safe to omit it from the symbol table. */
1372 if (has_opaque_xref (cur_fdr
, sh
))
1374 s
= new_symbol (name
);
1375 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1376 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1377 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1378 SYMBOL_TYPE (s
) = t
;
1379 add_symbol (s
, top_stack
->cur_block
);
1381 /* Incomplete definitions of structs should not get a name. */
1382 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1383 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1384 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1385 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1387 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1388 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1390 /* If we are giving a name to a type such as "pointer to
1391 foo" or "function returning foo", we better not set
1392 the TYPE_NAME. If the program contains "typedef char
1393 *caddr_t;", we don't want all variables of type char
1394 * to print as caddr_t. This is not just a
1395 consequence of GDB's type management; CC and GCC (at
1396 least through version 2.4) both output variables of
1397 either type char * or caddr_t with the type
1398 refering to the stTypedef symbol for caddr_t. If a future
1399 compiler cleans this up it GDB is not ready for it
1400 yet, but if it becomes ready we somehow need to
1401 disable this check (without breaking the PCC/GCC2.4
1406 Fortunately, this check seems not to be necessary
1407 for anything except pointers or functions. */
1410 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1414 case stFile
: /* file name */
1415 push_parse_stack ();
1416 top_stack
->blocktype
= sh
->st
;
1419 /* I`ve never seen these for C */
1421 break; /* register relocation */
1423 break; /* forwarding address */
1425 break; /* constant */
1427 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1434 /* Parse the type information provided in the raw AX entries for
1435 the symbol SH. Return the bitfield size in BS, in case.
1436 We must byte-swap the AX entries before we use them; BIGEND says whether
1437 they are big-endian or little-endian (from fh->fBigendian). */
1439 static struct type
*
1440 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1441 int bigend
, char *sym_name
)
1443 /* Null entries in this map are treated specially */
1444 static struct type
**map_bt
[] =
1446 &mdebug_type_void
, /* btNil */
1447 &mdebug_type_adr_32
, /* btAdr */
1448 &mdebug_type_char
, /* btChar */
1449 &mdebug_type_unsigned_char
, /* btUChar */
1450 &mdebug_type_short
, /* btShort */
1451 &mdebug_type_unsigned_short
, /* btUShort */
1452 &mdebug_type_int_32
, /* btInt */
1453 &mdebug_type_unsigned_int_32
, /* btUInt */
1454 &mdebug_type_long_32
, /* btLong */
1455 &mdebug_type_unsigned_long_32
, /* btULong */
1456 &mdebug_type_float
, /* btFloat */
1457 &mdebug_type_double
, /* btDouble */
1464 &mdebug_type_complex
, /* btComplex */
1465 &mdebug_type_double_complex
, /* btDComplex */
1467 &mdebug_type_fixed_dec
, /* btFixedDec */
1468 &mdebug_type_float_dec
, /* btFloatDec */
1469 &mdebug_type_string
, /* btString */
1472 &mdebug_type_void
, /* btVoid */
1473 0, /* DEC C++: Pointer to member */
1474 0, /* DEC C++: Virtual function table */
1475 0, /* DEC C++: Class (Record) */
1476 &mdebug_type_long_64
, /* btLong64 */
1477 &mdebug_type_unsigned_long_64
, /* btULong64 */
1478 &mdebug_type_long_long_64
, /* btLongLong64 */
1479 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1480 &mdebug_type_adr_64
, /* btAdr64 */
1481 &mdebug_type_int_64
, /* btInt64 */
1482 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1486 struct type
*tp
= 0;
1487 enum type_code type_code
= TYPE_CODE_UNDEF
;
1489 /* Handle undefined types, they have indexNil. */
1490 if (aux_index
== indexNil
)
1491 return mdebug_type_int
;
1493 /* Handle corrupt aux indices. */
1494 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1496 complain (&index_complaint
, sym_name
);
1497 return mdebug_type_int
;
1501 /* Use aux as a type information record, map its basic type. */
1502 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1503 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1505 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1506 return mdebug_type_int
;
1510 tp
= *map_bt
[t
->bt
];
1515 /* Cannot use builtin types -- build our own */
1519 type_code
= TYPE_CODE_STRUCT
;
1522 type_code
= TYPE_CODE_UNION
;
1525 type_code
= TYPE_CODE_ENUM
;
1528 type_code
= TYPE_CODE_RANGE
;
1531 type_code
= TYPE_CODE_SET
;
1534 /* alpha cc -migrate uses this for typedefs. The true type will
1535 be obtained by crossreferencing below. */
1536 type_code
= TYPE_CODE_ERROR
;
1539 /* alpha cc uses this for typedefs. The true type will be
1540 obtained by crossreferencing below. */
1541 type_code
= TYPE_CODE_ERROR
;
1544 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1545 return mdebug_type_int
;
1549 /* Move on to next aux */
1554 int width
= AUX_GET_WIDTH (bigend
, ax
);
1556 /* Inhibit core dumps with some cfront generated objects that
1558 if (bs
== (int *) NULL
)
1560 /* Alpha cc -migrate encodes char and unsigned char types
1561 as short and unsigned short types with a field width of 8.
1562 Enum types also have a field width which we ignore for now. */
1563 if (t
->bt
== btShort
&& width
== 8)
1564 tp
= mdebug_type_char
;
1565 else if (t
->bt
== btUShort
&& width
== 8)
1566 tp
= mdebug_type_unsigned_char
;
1567 else if (t
->bt
== btEnum
)
1570 complain (&bad_fbitfield_complaint
, sym_name
);
1577 /* A btIndirect entry cross references to an aux entry containing
1579 if (t
->bt
== btIndirect
)
1586 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1588 if (rn
->rfd
== 0xfff)
1590 rf
= AUX_GET_ISYM (bigend
, ax
);
1598 complain (&bad_indirect_xref_complaint
, sym_name
);
1599 return mdebug_type_int
;
1601 xref_fh
= get_rfd (fd
, rf
);
1602 xref_fd
= xref_fh
- debug_info
->fdr
;
1603 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1604 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1607 /* All these types really point to some (common) MIPS type
1608 definition, and only the type-qualifiers fully identify
1609 them. We'll make the same effort at sharing. */
1610 if (t
->bt
== btStruct
||
1614 /* btSet (I think) implies that the name is a tag name, not a typedef
1615 name. This apparently is a MIPS extension for C sets. */
1620 /* Try to cross reference this type, build new type on failure. */
1621 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1622 if (tp
== (struct type
*) NULL
)
1623 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1625 /* DEC c89 produces cross references to qualified aggregate types,
1626 dereference them. */
1627 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1628 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1629 tp
= tp
->target_type
;
1631 /* Make sure that TYPE_CODE(tp) has an expected type code.
1632 Any type may be returned from cross_ref if file indirect entries
1634 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1635 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1636 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1638 complain (&unexpected_type_code_complaint
, sym_name
);
1643 /* Usually, TYPE_CODE(tp) is already type_code. The main
1644 exception is if we guessed wrong re struct/union/enum.
1645 But for struct vs. union a wrong guess is harmless, so
1646 don't complain(). */
1647 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1648 && type_code
!= TYPE_CODE_ENUM
)
1649 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1650 && type_code
== TYPE_CODE_ENUM
))
1652 complain (&bad_tag_guess_complaint
, sym_name
);
1655 if (TYPE_CODE (tp
) != type_code
)
1657 TYPE_CODE (tp
) = type_code
;
1660 /* Do not set the tag name if it is a compiler generated tag name
1661 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1662 if (name
[0] == '.' || name
[0] == '\0')
1663 TYPE_TAG_NAME (tp
) = NULL
;
1664 else if (TYPE_TAG_NAME (tp
) == NULL
1665 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1666 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1667 ¤t_objfile
->type_obstack
);
1671 /* All these types really point to some (common) MIPS type
1672 definition, and only the type-qualifiers fully identify
1673 them. We'll make the same effort at sharing.
1674 FIXME: We are not doing any guessing on range types. */
1675 if (t
->bt
== btRange
)
1679 /* Try to cross reference this type, build new type on failure. */
1680 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1681 if (tp
== (struct type
*) NULL
)
1682 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1684 /* Make sure that TYPE_CODE(tp) has an expected type code.
1685 Any type may be returned from cross_ref if file indirect entries
1687 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1689 complain (&unexpected_type_code_complaint
, sym_name
);
1693 /* Usually, TYPE_CODE(tp) is already type_code. The main
1694 exception is if we guessed wrong re struct/union/enum. */
1695 if (TYPE_CODE (tp
) != type_code
)
1697 complain (&bad_tag_guess_complaint
, sym_name
);
1698 TYPE_CODE (tp
) = type_code
;
1700 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1701 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1702 ¤t_objfile
->type_obstack
);
1705 if (t
->bt
== btTypedef
)
1709 /* Try to cross reference this type, it should succeed. */
1710 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1711 if (tp
== (struct type
*) NULL
)
1713 complain (&unable_to_cross_ref_complaint
, sym_name
);
1714 tp
= mdebug_type_int
;
1718 /* Deal with range types */
1719 if (t
->bt
== btRange
)
1721 TYPE_NFIELDS (tp
) = 2;
1722 TYPE_FIELDS (tp
) = ((struct field
*)
1723 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1724 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1725 ¤t_objfile
->type_obstack
);
1726 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1728 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1729 ¤t_objfile
->type_obstack
);
1730 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1734 /* Parse all the type qualifiers now. If there are more
1735 than 6 the game will continue in the next aux */
1739 #define PARSE_TQ(tq) \
1740 if (t->tq != tqNil) \
1741 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1753 /* mips cc 2.x and gcc never put out continued aux entries. */
1757 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1761 /* Complain for illegal continuations due to corrupt aux entries. */
1763 complain (&bad_continued_complaint
, sym_name
);
1768 /* Make up a complex type from a basic one. Type is passed by
1769 reference in TPP and side-effected as necessary. The type
1770 qualifier TQ says how to handle the aux symbols at AX for
1771 the symbol SX we are currently analyzing. BIGEND says whether
1772 aux symbols are big-endian or little-endian.
1773 Returns the number of aux symbols we parsed. */
1776 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1782 /* Used in array processing */
1793 t
= lookup_pointer_type (*tpp
);
1798 t
= lookup_function_type (*tpp
);
1805 /* Determine and record the domain type (type of index) */
1806 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1812 rf
= AUX_GET_ISYM (bigend
, ax
);
1815 fh
= get_rfd (fd
, rf
);
1817 indx
= parse_type (fh
- debug_info
->fdr
,
1818 debug_info
->external_aux
+ fh
->iauxBase
,
1819 id
, (int *) NULL
, bigend
, sym_name
);
1821 /* The bounds type should be an integer type, but might be anything
1822 else due to corrupt aux entries. */
1823 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1825 complain (&array_index_type_complaint
, sym_name
);
1826 indx
= mdebug_type_int
;
1829 /* Get the bounds, and create the array type. */
1831 lower
= AUX_GET_DNLOW (bigend
, ax
);
1833 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1835 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1837 range
= create_range_type ((struct type
*) NULL
, indx
,
1840 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1842 /* We used to fill in the supplied array element bitsize
1843 here if the TYPE_LENGTH of the target type was zero.
1844 This happens for a `pointer to an array of anonymous structs',
1845 but in this case the array element bitsize is also zero,
1846 so nothing is gained.
1847 And we used to check the TYPE_LENGTH of the target type against
1848 the supplied array element bitsize.
1849 gcc causes a mismatch for `pointer to array of object',
1850 since the sdb directives it uses do not have a way of
1851 specifying the bitsize, but it does no harm (the
1852 TYPE_LENGTH should be correct) and we should be able to
1853 ignore the erroneous bitsize from the auxiliary entry safely.
1854 dbx seems to ignore it too. */
1856 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1858 if (TYPE_LENGTH (*tpp
) == 0)
1860 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1867 /* Volatile -- currently ignored */
1871 /* Const -- currently ignored */
1875 complain (&unknown_type_qual_complaint
, tq
);
1881 /* Parse a procedure descriptor record PR. Note that the procedure is
1882 parsed _after_ the local symbols, now we just insert the extra
1883 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1884 already been placed in the procedure's main block. Note also that
1885 images that have been partially stripped (ld -x) have been deprived
1886 of local symbols, and we have to cope with them here. FIRST_OFF is
1887 the offset of the first procedure for this FDR; we adjust the
1888 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1889 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1890 in question, or NULL to use top_stack->cur_block. */
1892 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1895 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1896 struct partial_symtab
*pst
)
1898 struct symbol
*s
, *i
;
1900 struct mips_extra_func_info
*e
;
1903 /* Simple rule to find files linked "-x" */
1904 if (cur_fdr
->rss
== -1)
1908 /* Static procedure at address pr->adr. Sigh. */
1909 /* FIXME-32x64. assuming pr->adr fits in long. */
1910 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1918 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1919 ((char *) debug_info
->external_ext
1921 * debug_swap
->external_ext_size
)),
1923 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1931 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1932 ((char *) debug_info
->external_sym
1933 + ((cur_fdr
->isymBase
+ pr
->isym
)
1934 * debug_swap
->external_sym_size
)),
1936 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1939 if (search_symtab
!= NULL
)
1942 /* This loses both in the case mentioned (want a static, find a global),
1943 but also if we are looking up a non-mangled name which happens to
1944 match the name of a mangled function. */
1945 /* We have to save the cur_fdr across the call to lookup_symbol.
1946 If the pdr is for a static function and if a global function with
1947 the same name exists, lookup_symbol will eventually read in the symtab
1948 for the global function and clobber cur_fdr. */
1949 FDR
*save_cur_fdr
= cur_fdr
;
1950 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1951 cur_fdr
= save_cur_fdr
;
1955 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1961 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1962 VAR_NAMESPACE
, LOC_BLOCK
);
1966 b
= SYMBOL_BLOCK_VALUE (s
);
1970 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1974 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1975 s
= new_symbol (sh_name
);
1976 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1977 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1978 /* Donno its type, hope int is ok */
1979 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1980 add_symbol (s
, top_stack
->cur_block
);
1981 /* Wont have symbols for this one */
1983 SYMBOL_BLOCK_VALUE (s
) = b
;
1984 BLOCK_FUNCTION (b
) = s
;
1985 BLOCK_START (b
) = pr
->adr
;
1986 /* BOUND used to be the end of procedure's text, but the
1987 argument is no longer passed in. */
1988 BLOCK_END (b
) = bound
;
1989 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1990 add_block (b
, top_stack
->cur_st
);
1994 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1998 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
2000 e
->pdr
.isym
= (long) s
;
2002 /* GDB expects the absolute function start address for the
2003 procedure descriptor in e->pdr.adr.
2004 As the address in the procedure descriptor is usually relative,
2005 we would have to relocate e->pdr.adr with cur_fdr->adr and
2006 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2007 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2008 in shared libraries on some systems, and on other systems
2009 e->pdr.adr is sometimes offset by a bogus value.
2010 To work around these problems, we replace e->pdr.adr with
2011 the start address of the function. */
2012 e
->pdr
.adr
= BLOCK_START (b
);
2014 /* Correct incorrect setjmp procedure descriptor from the library
2015 to make backtrace through setjmp work. */
2016 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
2018 complain (&bad_setjmp_pdr_complaint
, 0);
2019 e
->pdr
.pcreg
= RA_REGNUM
;
2020 e
->pdr
.regmask
= 0x80000000;
2021 e
->pdr
.regoffset
= -4;
2025 /* It would be reasonable that functions that have been compiled
2026 without debugging info have a btNil type for their return value,
2027 and functions that are void and are compiled with debugging info
2029 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2030 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2032 The glevel field in cur_fdr could be used to determine the presence
2033 of debugging info, but GCC doesn't always pass the -g switch settings
2034 to the assembler and GAS doesn't set the glevel field from the -g switch
2036 To work around these problems, the return value type of a TYPE_CODE_VOID
2037 function is adjusted accordingly if no debugging info was found in the
2038 compilation unit. */
2040 if (processing_gcc_compilation
== 0
2041 && found_ecoff_debugging_info
== 0
2042 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2043 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2046 /* Relocate the extra function info pointed to by the symbol table. */
2049 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2051 struct mips_extra_func_info
*e
;
2053 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2055 e
->pdr
.adr
+= delta
;
2058 /* Parse the external symbol ES. Just call parse_symbol() after
2059 making sure we know where the aux are for it.
2060 BIGEND says whether aux entries are big-endian or little-endian.
2062 This routine clobbers top_stack->cur_block and ->cur_st. */
2064 static void parse_external (EXTR
*, int, struct section_offsets
*,
2068 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2069 struct objfile
*objfile
)
2073 if (es
->ifd
!= ifdNil
)
2076 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2077 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2081 cur_fdr
= debug_info
->fdr
;
2085 /* Reading .o files */
2086 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2089 switch (es
->asym
.st
)
2092 /* These are generated for static symbols in .o files,
2113 /* FIXME: Turn this into a complaint? */
2115 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2116 what
, debug_info
->ssext
+ es
->asym
.iss
,
2117 fdr_name (cur_fdr
));
2121 switch (es
->asym
.st
)
2125 /* There is no need to parse the external procedure symbols.
2126 If they are from objects compiled without -g, their index will
2127 be indexNil, and the symbol definition from the minimal symbol
2128 is preferrable (yielding a function returning int instead of int).
2129 If the index points to a local procedure symbol, the local
2130 symbol already provides the correct type.
2131 Note that the index of the external procedure symbol points
2132 to the local procedure symbol in the local symbol table, and
2133 _not_ to the auxiliary symbol info. */
2137 /* Global common symbols are resolved by the runtime loader,
2139 if (SC_IS_COMMON (es
->asym
.sc
))
2142 /* Note that the case of a symbol with indexNil must be handled
2143 anyways by parse_symbol(). */
2144 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2151 /* Parse the line number info for file descriptor FH into
2152 GDB's linetable LT. MIPS' encoding requires a little bit
2153 of magic to get things out. Note also that MIPS' line
2154 numbers can go back and forth, apparently we can live
2155 with that and do not need to reorder our linetables */
2157 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2158 struct partial_symtab
*, CORE_ADDR
);
2161 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2162 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2164 unsigned char *base
;
2166 int delta
, count
, lineno
= 0;
2168 if (fh
->cbLine
== 0)
2171 /* Scan by procedure descriptors */
2173 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2177 unsigned char *halt
;
2179 /* No code for this one */
2180 if (pr
->iline
== ilineNil
||
2181 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2184 /* Determine start and end address of compressed line bytes for
2186 base
= debug_info
->line
+ fh
->cbLineOffset
;
2187 if (j
!= (fh
->cpd
- 1))
2188 halt
= base
+ pr
[1].cbLineOffset
;
2190 halt
= base
+ fh
->cbLine
;
2191 base
+= pr
->cbLineOffset
;
2193 adr
= TEXTLOW (pst
) + pr
->adr
- lowest_pdr_addr
;
2195 l
= adr
>> 2; /* in words */
2196 for (lineno
= pr
->lnLow
; base
< halt
;)
2198 count
= *base
& 0x0f;
2199 delta
= *base
++ >> 4;
2204 delta
= (base
[0] << 8) | base
[1];
2205 if (delta
>= 0x8000)
2209 lineno
+= delta
; /* first delta is 0 */
2211 /* Complain if the line table overflows. Could happen
2212 with corrupt binaries. */
2213 if (lt
->nitems
>= maxlines
)
2215 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2218 k
= add_line (lt
, lineno
, l
, k
);
2224 /* Master parsing procedure for first-pass reading of file symbols
2225 into a partial_symtab. */
2228 parse_partial_symbols (struct objfile
*objfile
)
2230 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2231 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2232 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2233 void (*const swap_ext_in
) (bfd
*, PTR
, EXTR
*) = debug_swap
->swap_ext_in
;
2234 void (*const swap_sym_in
) (bfd
*, PTR
, SYMR
*) = debug_swap
->swap_sym_in
;
2235 void (*const swap_rfd_in
) (bfd
*, PTR
, RFDT
*) = debug_swap
->swap_rfd_in
;
2237 HDRR
*hdr
= &debug_info
->symbolic_header
;
2238 /* Running pointers */
2243 register EXTR
*ext_in
;
2246 struct partial_symtab
*pst
;
2247 int textlow_not_set
= 1;
2248 int past_first_source_file
= 0;
2250 /* List of current psymtab's include files */
2251 char **psymtab_include_list
;
2252 int includes_allocated
;
2255 struct pst_map
*fdr_to_pst
;
2256 /* Index within current psymtab dependency list */
2257 struct partial_symtab
**dependency_list
;
2258 int dependencies_used
, dependencies_allocated
;
2259 struct cleanup
*old_chain
;
2261 enum language prev_language
;
2262 asection
*text_sect
;
2263 int relocatable
= 0;
2265 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2266 the shared libraries are prelinked at a high memory address.
2267 We have to adjust the start address of the object file for this case,
2268 by setting it to the start address of the first procedure in the file.
2269 But we should do no adjustments if we are debugging a .o file, where
2270 the text section (and fh->adr) really starts at zero. */
2271 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2272 if (text_sect
!= NULL
2273 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2276 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2277 sizeof (EXTR
) * hdr
->iextMax
);
2279 includes_allocated
= 30;
2281 psymtab_include_list
= (char **) alloca (includes_allocated
*
2283 next_symbol_text_func
= mdebug_next_symbol_text
;
2285 dependencies_allocated
= 30;
2286 dependencies_used
= 0;
2288 (struct partial_symtab
**) alloca (dependencies_allocated
*
2289 sizeof (struct partial_symtab
*));
2291 last_source_file
= NULL
;
2296 * Only parse the Local and External symbols, and the Relative FDR.
2297 * Fixup enough of the loader symtab to be able to use it.
2298 * Allocate space only for the file's portions we need to
2303 max_glevel
= MIN_GLEVEL
;
2305 /* Allocate the map FDR -> PST.
2306 Minor hack: -O3 images might claim some global data belongs
2307 to FDR -1. We`ll go along with that */
2308 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2309 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2312 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2313 fdr_to_pst
[-1].pst
= pst
;
2317 /* Allocate the global pending list. */
2319 ((struct mdebug_pending
**)
2320 obstack_alloc (&objfile
->psymbol_obstack
,
2321 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2322 memset ((PTR
) pending_list
, 0,
2323 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2325 /* Pass 0 over external syms: swap them in. */
2326 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2327 make_cleanup (xfree
, ext_block
);
2329 ext_out
= (char *) debug_info
->external_ext
;
2330 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2332 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2333 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2335 /* Pass 1 over external syms: Presize and partition the list */
2337 ext_in_end
= ext_in
+ hdr
->iextMax
;
2338 for (; ext_in
< ext_in_end
; ext_in
++)
2340 /* See calls to complain below. */
2341 if (ext_in
->ifd
>= -1
2342 && ext_in
->ifd
< hdr
->ifdMax
2343 && ext_in
->asym
.iss
>= 0
2344 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2345 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2348 /* Pass 1.5 over files: partition out global symbol space */
2350 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2352 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2353 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2354 fdr_to_pst
[f_idx
].n_globals
= 0;
2359 For ECOFF in ELF, we skip the creation of the minimal symbols.
2360 The ECOFF symbols should be a subset of the Elf symbols, and the
2361 section information of the elf symbols will be more accurate.
2362 FIXME! What about Irix 5's native linker?
2364 By default, Elf sections which don't exist in ECOFF
2365 get put in ECOFF's absolute section by the gnu linker.
2366 Since absolute sections don't get relocated, we
2367 end up calculating an address different from that of
2368 the symbol's minimal symbol (created earlier from the
2371 To fix this, either :
2372 1) don't create the duplicate symbol
2373 (assumes ECOFF symtab is a subset of the ELF symtab;
2374 assumes no side-effects result from ignoring ECOFF symbol)
2375 2) create it, only if lookup for existing symbol in ELF's minimal
2378 assumes no side-effects result from ignoring ECOFF symbol)
2379 3) create it, but lookup ELF's minimal symbol and use it's section
2380 during relocation, then modify "uniqify" phase to merge and
2381 eliminate the duplicate symbol
2382 (highly inefficient)
2384 I've implemented #1 here...
2385 Skip the creation of the minimal symbols based on the ECOFF
2388 /* Pass 2 over external syms: fill in external symbols */
2390 ext_in_end
= ext_in
+ hdr
->iextMax
;
2391 for (; ext_in
< ext_in_end
; ext_in
++)
2393 enum minimal_symbol_type ms_type
= mst_text
;
2394 CORE_ADDR svalue
= ext_in
->asym
.value
;
2396 /* The Irix 5 native tools seem to sometimes generate bogus
2397 external symbols. */
2398 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2400 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2403 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2405 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2410 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2411 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2414 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2418 /* Pass 3 over files, over local syms: fill in static symbols */
2419 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2421 /* Process ECOFF Symbol Types and Storage Classes */
2422 switch (ext_in
->asym
.st
)
2425 /* Beginnning of Procedure */
2426 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2429 /* Load time only static procs */
2430 ms_type
= mst_file_text
;
2431 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2434 /* External symbol */
2435 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2437 /* The value of a common symbol is its size, not its address.
2441 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2444 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2446 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2449 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2456 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2458 ms_type
= mst_file_text
;
2459 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2461 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2463 ms_type
= mst_file_data
;
2464 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2466 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2468 ms_type
= mst_file_bss
;
2469 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2476 /* The alpha has the section start addresses in stLocal symbols
2477 whose name starts with a `.'. Skip those but complain for all
2478 other stLocal symbols.
2479 Irix6 puts the section start addresses in stNil symbols, skip
2485 ms_type
= mst_unknown
;
2486 complain (&unknown_ext_complaint
, name
);
2488 if (!ECOFF_IN_ELF (cur_bfd
))
2489 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2492 /* Pass 3 over files, over local syms: fill in static symbols */
2493 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2495 struct partial_symtab
*save_pst
;
2499 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2503 fdr_to_pst
[f_idx
].pst
= NULL
;
2507 /* Determine the start address for this object file from the
2508 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2512 if (relocatable
|| textlow
!= 0)
2513 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2517 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2520 objfile
->global_psymbols
.next
,
2521 objfile
->static_psymbols
.next
);
2522 pst
->read_symtab_private
= ((char *)
2523 obstack_alloc (&objfile
->psymbol_obstack
,
2524 sizeof (struct symloc
)));
2525 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2528 TEXTLOW (pst
) = pst
->textlow
;
2529 TEXTHIGH (pst
) = pst
->texthigh
;
2530 FDR_IDX (pst
) = f_idx
;
2531 CUR_BFD (pst
) = cur_bfd
;
2532 DEBUG_SWAP (pst
) = debug_swap
;
2533 DEBUG_INFO (pst
) = debug_info
;
2534 PENDING_LIST (pst
) = pending_list
;
2536 /* The way to turn this into a symtab is to call... */
2537 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2539 /* Set up language for the pst.
2540 The language from the FDR is used if it is unambigious (e.g. cfront
2541 with native cc and g++ will set the language to C).
2542 Otherwise we have to deduce the language from the filename.
2543 Native ecoff has every header file in a separate FDR, so
2544 deduce_language_from_filename will return language_unknown for
2545 a header file, which is not what we want.
2546 But the FDRs for the header files are after the FDR for the source
2547 file, so we can assign the language of the source file to the
2548 following header files. Then we save the language in the private
2549 pst data so that we can reuse it when building symtabs. */
2550 prev_language
= psymtab_language
;
2554 case langCplusplusV2
:
2555 psymtab_language
= language_cplus
;
2558 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2561 if (psymtab_language
== language_unknown
)
2562 psymtab_language
= prev_language
;
2563 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2565 TEXTHIGH (pst
) = TEXTLOW (pst
);
2567 /* For stabs-in-ecoff files, the second symbol must be @stab.
2568 This symbol is emitted by mips-tfile to signal that the
2569 current object file uses encapsulated stabs instead of mips
2570 ecoff for local symbols. (It is the second symbol because
2571 the first symbol is the stFile used to signal the start of a
2573 processing_gcc_compilation
= 0;
2576 (*swap_sym_in
) (cur_bfd
,
2577 ((char *) debug_info
->external_sym
2578 + (fh
->isymBase
+ 1) * external_sym_size
),
2580 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2581 processing_gcc_compilation
= 2;
2584 if (processing_gcc_compilation
!= 0)
2586 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2591 (*swap_sym_in
) (cur_bfd
,
2592 (((char *) debug_info
->external_sym
)
2593 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2595 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2596 if (!ECOFF_IS_STAB (&sh
))
2598 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2603 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2604 if (sh
.st
== stStaticProc
)
2606 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2607 prim_record_minimal_symbol_and_info (namestring
,
2611 SECT_OFF_TEXT (objfile
),
2615 procaddr
= sh
.value
;
2617 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2618 (debug_info
->external_aux
2621 (*swap_sym_in
) (cur_bfd
,
2622 ((char *) debug_info
->external_sym
2623 + ((fh
->isymBase
+ isym
- 1)
2624 * external_sym_size
)),
2628 CORE_ADDR high
= procaddr
+ sh
.value
;
2630 /* Kludge for Irix 5.2 zero fh->adr. */
2632 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
2633 TEXTLOW (pst
) = procaddr
;
2634 if (high
> TEXTHIGH (pst
))
2635 TEXTHIGH (pst
) = high
;
2638 else if (sh
.st
== stStatic
)
2653 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2654 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2655 prim_record_minimal_symbol_and_info (namestring
,
2659 SECT_OFF_DATA (objfile
),
2665 /* FIXME! Shouldn't this use cases for bss,
2666 then have the default be abs? */
2667 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2668 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2669 prim_record_minimal_symbol_and_info (namestring
,
2673 SECT_OFF_BSS (objfile
),
2681 /* Handle stabs continuation */
2683 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2684 int len
= strlen (stabstring
);
2685 while (stabstring
[len
- 1] == '\\')
2688 char *stabstring1
= stabstring
;
2692 /* Ignore continuation char from 1st string */
2695 /* Read next stabstring */
2697 (*swap_sym_in
) (cur_bfd
,
2698 (((char *) debug_info
->external_sym
)
2699 + (fh
->isymBase
+ cur_sdx
)
2700 * external_sym_size
),
2702 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2703 len2
= strlen (stabstring2
);
2705 /* Concatinate stabstring2 with stabstring1 */
2707 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2708 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2710 stabstring
= xmalloc (len
+ len2
+ 1);
2711 strcpy (stabstring
, stabstring1
);
2712 strcpy (stabstring
+ len
, stabstring2
);
2718 static struct complaint function_outside_compilation_unit
= {
2719 "function `%s' appears to be defined outside of all compilation units", 0, 0
2723 * Standard, external, non-debugger, symbols
2726 case N_TEXT
| N_EXT
:
2727 case N_NBTEXT
| N_EXT
:
2728 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2731 case N_DATA
| N_EXT
:
2732 case N_NBDATA
| N_EXT
:
2733 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2738 case N_NBBSS
| N_EXT
:
2739 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2740 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2747 /* Standard, local, non-debugger, symbols */
2751 /* We need to be able to deal with both N_FN or N_TEXT,
2752 because we have no way of knowing whether the sys-supplied ld
2753 or GNU ld was used to make the executable. Sequents throw
2754 in another wrinkle -- they renumbered N_FN. */
2762 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2765 case N_UNDF
| N_EXT
:
2766 continue; /* Just undefined, not COMMON */
2771 /* Lots of symbol types we can just ignore. */
2778 /* Keep going . . . */
2781 * Special symbol types for GNU
2784 case N_INDR
| N_EXT
:
2786 case N_SETA
| N_EXT
:
2788 case N_SETT
| N_EXT
:
2790 case N_SETD
| N_EXT
:
2792 case N_SETB
| N_EXT
:
2803 static int prev_so_symnum
= -10;
2804 static int first_so_symnum
;
2806 int prev_textlow_not_set
;
2808 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2810 prev_textlow_not_set
= textlow_not_set
;
2812 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2813 /* A zero value is probably an indication for the SunPRO 3.0
2814 compiler. end_psymtab explicitly tests for zero, so
2815 don't relocate it. */
2819 textlow_not_set
= 1;
2823 textlow_not_set
= 0;
2825 textlow_not_set
= 0;
2827 past_first_source_file
= 1;
2829 if (prev_so_symnum
!= symnum
- 1)
2830 { /* Here if prev stab wasn't N_SO */
2831 first_so_symnum
= symnum
;
2835 pst
= (struct partial_symtab
*) 0;
2837 dependencies_used
= 0;
2841 prev_so_symnum
= symnum
;
2843 /* End the current partial symtab and start a new one */
2845 /* SET_NAMESTRING ();*/
2846 namestring
= stabstring
;
2848 /* Null name means end of .o file. Don't start a new one. */
2849 if (*namestring
== '\000')
2852 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2853 The first one is a directory name; the second the file name.
2854 If pst exists, is empty, and has a filename ending in '/',
2855 we assume the previous N_SO was a directory name. */
2857 p
= strrchr (namestring
, '/');
2858 if (p
&& *(p
+ 1) == '\000')
2859 continue; /* Simply ignore directory name SOs */
2861 /* Some other compilers (C++ ones in particular) emit useless
2862 SOs for non-existant .c files. We ignore all subsequent SOs that
2863 immediately follow the first. */
2875 enum language tmp_language
;
2876 /* Mark down an include file in the current psymtab */
2878 /* SET_NAMESTRING ();*/
2879 namestring
= stabstring
;
2881 tmp_language
= deduce_language_from_filename (namestring
);
2883 /* Only change the psymtab's language if we've learned
2884 something useful (eg. tmp_language is not language_unknown).
2885 In addition, to match what start_subfile does, never change
2887 if (tmp_language
!= language_unknown
2888 && (tmp_language
!= language_c
2889 || psymtab_language
!= language_cplus
))
2890 psymtab_language
= tmp_language
;
2892 /* In C++, one may expect the same filename to come round many
2893 times, when code is coming alternately from the main file
2894 and from inline functions in other files. So I check to see
2895 if this is a file we've seen before -- either the main
2896 source file, or a previously included file.
2898 This seems to be a lot of time to be spending on N_SOL, but
2899 things like "break c-exp.y:435" need to work (I
2900 suppose the psymtab_include_list could be hashed or put
2901 in a binary tree, if profiling shows this is a major hog). */
2902 if (pst
&& STREQ (namestring
, pst
->filename
))
2906 for (i
= 0; i
< includes_used
; i
++)
2907 if (STREQ (namestring
, psymtab_include_list
[i
]))
2916 psymtab_include_list
[includes_used
++] = namestring
;
2917 if (includes_used
>= includes_allocated
)
2919 char **orig
= psymtab_include_list
;
2921 psymtab_include_list
= (char **)
2922 alloca ((includes_allocated
*= 2) *
2924 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2925 includes_used
* sizeof (char *));
2929 case N_LSYM
: /* Typedef or automatic variable. */
2930 case N_STSYM
: /* Data seg var -- static */
2931 case N_LCSYM
: /* BSS " */
2932 case N_ROSYM
: /* Read-only data seg var -- static. */
2933 case N_NBSTS
: /* Gould nobase. */
2934 case N_NBLCS
: /* symbols. */
2936 case N_GSYM
: /* Global (extern) variable; can be
2937 data or bss (sigh FIXME). */
2939 /* Following may probably be ignored; I'll leave them here
2940 for now (until I do Pascal and Modula 2 extensions). */
2942 case N_PC
: /* I may or may not need this; I
2944 case N_M2C
: /* I suspect that I can ignore this here. */
2945 case N_SCOPE
: /* Same. */
2947 /* SET_NAMESTRING ();*/
2948 namestring
= stabstring
;
2949 p
= (char *) strchr (namestring
, ':');
2951 continue; /* Not a debugging symbol. */
2955 /* Main processing section for debugging symbols which
2956 the initial read through the symbol tables needs to worry
2957 about. If we reach this point, the symbol which we are
2958 considering is definitely one we are interested in.
2959 p must also contain the (valid) index into the namestring
2960 which indicates the debugging type symbol. */
2965 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2966 #ifdef STATIC_TRANSFORM_NAME
2967 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2969 add_psymbol_to_list (namestring
, p
- namestring
,
2970 VAR_NAMESPACE
, LOC_STATIC
,
2971 &objfile
->static_psymbols
,
2973 psymtab_language
, objfile
);
2976 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2977 /* The addresses in these entries are reported to be
2978 wrong. See the code that reads 'G's for symtabs. */
2979 add_psymbol_to_list (namestring
, p
- namestring
,
2980 VAR_NAMESPACE
, LOC_STATIC
,
2981 &objfile
->global_psymbols
,
2983 psymtab_language
, objfile
);
2987 /* When a 'T' entry is defining an anonymous enum, it
2988 may have a name which is the empty string, or a
2989 single space. Since they're not really defining a
2990 symbol, those shouldn't go in the partial symbol
2991 table. We do pick up the elements of such enums at
2992 'check_enum:', below. */
2993 if (p
>= namestring
+ 2
2994 || (p
== namestring
+ 1
2995 && namestring
[0] != ' '))
2997 add_psymbol_to_list (namestring
, p
- namestring
,
2998 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2999 &objfile
->static_psymbols
,
3001 psymtab_language
, objfile
);
3004 /* Also a typedef with the same name. */
3005 add_psymbol_to_list (namestring
, p
- namestring
,
3006 VAR_NAMESPACE
, LOC_TYPEDEF
,
3007 &objfile
->static_psymbols
,
3009 psymtab_language
, objfile
);
3012 /* The semantics of C++ state that "struct foo { ... }"
3013 also defines a typedef for "foo". Unfortuantely, cfront
3014 never makes the typedef when translating from C++ to C.
3015 We make the typedef here so that "ptype foo" works as
3016 expected for cfront translated code. */
3017 else if (psymtab_language
== language_cplus
)
3019 /* Also a typedef with the same name. */
3020 add_psymbol_to_list (namestring
, p
- namestring
,
3021 VAR_NAMESPACE
, LOC_TYPEDEF
,
3022 &objfile
->static_psymbols
,
3024 psymtab_language
, objfile
);
3029 if (p
!= namestring
) /* a name is there, not just :T... */
3031 add_psymbol_to_list (namestring
, p
- namestring
,
3032 VAR_NAMESPACE
, LOC_TYPEDEF
,
3033 &objfile
->static_psymbols
,
3035 psymtab_language
, objfile
);
3038 /* If this is an enumerated type, we need to
3039 add all the enum constants to the partial symbol
3040 table. This does not cover enums without names, e.g.
3041 "enum {a, b} c;" in C, but fortunately those are
3042 rare. There is no way for GDB to find those from the
3043 enum type without spending too much time on it. Thus
3044 to solve this problem, the compiler needs to put out the
3045 enum in a nameless type. GCC2 does this. */
3047 /* We are looking for something of the form
3048 <name> ":" ("t" | "T") [<number> "="] "e"
3049 {<constant> ":" <value> ","} ";". */
3051 /* Skip over the colon and the 't' or 'T'. */
3053 /* This type may be given a number. Also, numbers can come
3054 in pairs like (0,26). Skip over it. */
3055 while ((*p
>= '0' && *p
<= '9')
3056 || *p
== '(' || *p
== ',' || *p
== ')'
3062 /* The aix4 compiler emits extra crud before the members. */
3065 /* Skip over the type (?). */
3069 /* Skip over the colon. */
3073 /* We have found an enumerated type. */
3074 /* According to comments in read_enum_type
3075 a comma could end it instead of a semicolon.
3076 I don't know where that happens.
3078 while (*p
&& *p
!= ';' && *p
!= ',')
3082 /* Check for and handle cretinous dbx symbol name
3084 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3085 p
= next_symbol_text (objfile
);
3087 /* Point to the character after the name
3088 of the enum constant. */
3089 for (q
= p
; *q
&& *q
!= ':'; q
++)
3091 /* Note that the value doesn't matter for
3092 enum constants in psymtabs, just in symtabs. */
3093 add_psymbol_to_list (p
, q
- p
,
3094 VAR_NAMESPACE
, LOC_CONST
,
3095 &objfile
->static_psymbols
, 0,
3096 0, psymtab_language
, objfile
);
3097 /* Point past the name. */
3099 /* Skip over the value. */
3100 while (*p
&& *p
!= ',')
3102 /* Advance past the comma. */
3109 /* Constant, e.g. from "const" in Pascal. */
3110 add_psymbol_to_list (namestring
, p
- namestring
,
3111 VAR_NAMESPACE
, LOC_CONST
,
3112 &objfile
->static_psymbols
, sh
.value
,
3113 0, psymtab_language
, objfile
);
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
->static_psymbols
,
3131 psymtab_language
, objfile
);
3134 /* Global functions were ignored here, but now they
3135 are put into the global psymtab like one would expect.
3136 They're also in the minimal symbol table. */
3140 int name_len
= p
- namestring
;
3141 char *name
= xmalloc (name_len
+ 1);
3142 memcpy (name
, namestring
, name_len
);
3143 name
[name_len
] = '\0';
3144 complain (&function_outside_compilation_unit
, name
);
3147 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3148 add_psymbol_to_list (namestring
, p
- namestring
,
3149 VAR_NAMESPACE
, LOC_BLOCK
,
3150 &objfile
->global_psymbols
,
3152 psymtab_language
, objfile
);
3155 /* Two things show up here (hopefully); static symbols of
3156 local scope (static used inside braces) or extensions
3157 of structure symbols. We can ignore both. */
3171 case '#': /* for symbol identification (used in live ranges) */
3172 /* added to support cfront stabs strings */
3173 case 'Z': /* for definition continuations */
3174 case 'P': /* for prototypes */
3178 /* It is a C++ nested symbol. We don't need to record it
3179 (I don't think); if we try to look up foo::bar::baz,
3180 then symbols for the symtab containing foo should get
3181 read in, I think. */
3182 /* Someone says sun cc puts out symbols like
3183 /foo/baz/maclib::/usr/local/bin/maclib,
3184 which would get here with a symbol type of ':'. */
3188 /* Unexpected symbol descriptor. The second and subsequent stabs
3189 of a continued stab can show up here. The question is
3190 whether they ever can mimic a normal stab--it would be
3191 nice if not, since we certainly don't want to spend the
3192 time searching to the end of every string looking for
3195 complain (&unknown_symchar_complaint
, p
[1]);
3197 /* Ignore it; perhaps it is an extension that we don't
3206 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3207 /* Solaris 2 end of module, finish current partial symbol table.
3208 END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which
3209 is necessary if a module compiled without debugging info
3210 follows this module. */
3213 pst
= (struct partial_symtab
*) 0;
3215 dependencies_used
= 0;
3221 if (sh
.value
> TEXTHIGH (save_pst
))
3222 TEXTHIGH (save_pst
) = sh
.value
;
3227 case N_SSYM
: /* Claim: Structure or union element.
3228 Hopefully, I can ignore this. */
3229 case N_ENTRY
: /* Alternate entry point; can ignore. */
3230 case N_MAIN
: /* Can definitely ignore this. */
3231 case N_CATCH
: /* These are GNU C++ extensions */
3232 case N_EHDECL
: /* that can safely be ignored here. */
3242 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3243 case N_DEFD
: /* GNU Modula-2 */
3244 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3246 case N_OBJ
: /* useless types from Solaris */
3248 /* These symbols aren't interesting; don't worry about them */
3253 /* If we haven't found it yet, ignore it. It's probably some
3254 new type we don't know about yet. */
3255 complain (&unknown_symtype_complaint
,
3256 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3260 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3263 /* end - Handle continuation */
3268 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3271 enum address_class
class;
3273 (*swap_sym_in
) (cur_bfd
,
3274 ((char *) debug_info
->external_sym
3275 + ((fh
->isymBase
+ cur_sdx
)
3276 * external_sym_size
)),
3279 if (ECOFF_IS_STAB (&sh
))
3285 /* Non absolute static symbols go into the minimal table. */
3286 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3287 || (sh
.index
== indexNil
3288 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3290 /* FIXME, premature? */
3295 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3301 /* The value of a stEnd symbol is the displacement from the
3302 corresponding start symbol value, do not relocate it. */
3304 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3311 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3315 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3326 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3327 mst_file_text
, NULL
,
3328 SECT_OFF_TEXT (objfile
), NULL
,
3334 /* Usually there is a local and a global stProc symbol
3335 for a function. This means that the function name
3336 has already been entered into the mimimal symbol table
3337 while processing the global symbols in pass 2 above.
3338 One notable exception is the PROGRAM name from
3339 f77 compiled executables, it is only put out as
3340 local stProc symbol, and a global MAIN__ stProc symbol
3341 points to it. It doesn't matter though, as gdb is
3342 still able to find the PROGRAM name via the partial
3343 symbol table, and the MAIN__ symbol via the minimal
3345 if (sh
.st
== stProc
)
3346 add_psymbol_to_list (name
, strlen (name
),
3347 VAR_NAMESPACE
, LOC_BLOCK
,
3348 &objfile
->global_psymbols
,
3349 0, sh
.value
, psymtab_language
, objfile
);
3351 add_psymbol_to_list (name
, strlen (name
),
3352 VAR_NAMESPACE
, LOC_BLOCK
,
3353 &objfile
->static_psymbols
,
3354 0, sh
.value
, psymtab_language
, objfile
);
3356 /* Skip over procedure to next one. */
3357 if (sh
.index
>= hdr
->iauxMax
)
3359 /* Should not happen, but does when cross-compiling
3360 with the MIPS compiler. FIXME -- pull later. */
3361 complain (&index_complaint
, name
);
3362 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3365 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3366 (debug_info
->external_aux
3369 procaddr
= sh
.value
;
3371 if (new_sdx
<= cur_sdx
)
3373 /* This should not happen either... FIXME. */
3374 complain (&aux_index_complaint
, name
);
3375 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3379 (*swap_sym_in
) (cur_bfd
,
3380 ((char *) debug_info
->external_sym
3381 + ((fh
->isymBase
+ cur_sdx
- 1)
3382 * external_sym_size
)),
3387 /* Kludge for Irix 5.2 zero fh->adr. */
3389 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
3390 TEXTLOW (pst
) = procaddr
;
3392 high
= procaddr
+ sh
.value
;
3393 if (high
> TEXTHIGH (pst
))
3394 TEXTHIGH (pst
) = high
;
3397 case stStatic
: /* Variable */
3398 if (SC_IS_DATA (sh
.sc
))
3399 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3400 mst_file_data
, NULL
,
3401 SECT_OFF_DATA (objfile
),
3405 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3407 SECT_OFF_BSS (objfile
),
3413 case stIndirect
: /* Irix5 forward declaration */
3414 /* Skip forward declarations from Irix5 cc */
3417 case stTypedef
: /* Typedef */
3418 /* Skip typedefs for forward declarations and opaque
3419 structs from alpha and mips cc. */
3420 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3422 class = LOC_TYPEDEF
;
3425 case stConstant
: /* Constant decl */
3432 case stBlock
: /* { }, str, un, enum */
3433 /* Do not create a partial symbol for cc unnamed aggregates
3434 and gcc empty aggregates. */
3435 if ((sh
.sc
== scInfo
3436 || SC_IS_COMMON (sh
.sc
))
3438 && sh
.index
!= cur_sdx
+ 2)
3440 add_psymbol_to_list (name
, strlen (name
),
3441 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3442 &objfile
->static_psymbols
,
3444 psymtab_language
, objfile
);
3446 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3448 /* Skip over the block */
3450 if (new_sdx
<= cur_sdx
)
3452 /* This happens with the Ultrix kernel. */
3453 complain (&block_index_complaint
, name
);
3454 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3459 case stFile
: /* File headers */
3460 case stLabel
: /* Labels */
3461 case stEnd
: /* Ends of files */
3464 case stLocal
: /* Local variables */
3465 /* Normally these are skipped because we skip over
3466 all blocks we see. However, these can occur
3467 as visible symbols in a .h file that contains code. */
3471 /* Both complaints are valid: one gives symbol name,
3472 the other the offending symbol type. */
3473 complain (&unknown_sym_complaint
, name
);
3474 complain (&unknown_st_complaint
, sh
.st
);
3478 /* Use this gdb symbol */
3479 add_psymbol_to_list (name
, strlen (name
),
3480 VAR_NAMESPACE
, class,
3481 &objfile
->static_psymbols
,
3482 0, sh
.value
, psymtab_language
, objfile
);
3484 cur_sdx
++; /* Go to next file symbol */
3487 /* Now do enter the external symbols. */
3488 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3489 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3490 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3491 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3492 for (; --cur_sdx
>= 0; ext_ptr
++)
3494 enum address_class
class;
3499 if (ext_ptr
->ifd
!= f_idx
)
3500 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3501 psh
= &ext_ptr
->asym
;
3503 /* Do not add undefined symbols to the partial symbol table. */
3504 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3507 svalue
= psh
->value
;
3512 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3519 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3523 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3530 /* These are generated for static symbols in .o files,
3535 /* External procedure symbols have been entered
3536 into the minimal symbol table in pass 2 above.
3537 Ignore them, as parse_external will ignore them too. */
3543 complain (&unknown_ext_complaint
,
3544 debug_info
->ssext
+ psh
->iss
);
3545 /* Fall through, pretend it's global. */
3547 /* Global common symbols are resolved by the runtime loader,
3549 if (SC_IS_COMMON (psh
->sc
))
3555 name
= debug_info
->ssext
+ psh
->iss
;
3556 add_psymbol_to_list (name
, strlen (name
),
3557 VAR_NAMESPACE
, class,
3558 &objfile
->global_psymbols
,
3560 psymtab_language
, objfile
);
3564 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3565 empty and put on the free list. */
3566 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3567 psymtab_include_list
, includes_used
,
3568 -1, TEXTHIGH (save_pst
),
3569 dependency_list
, dependencies_used
, textlow_not_set
);
3571 dependencies_used
= 0;
3573 if (objfile
->ei
.entry_point
>= TEXTLOW (save_pst
) &&
3574 objfile
->ei
.entry_point
< TEXTHIGH (save_pst
))
3576 objfile
->ei
.entry_file_lowpc
= TEXTLOW (save_pst
);
3577 objfile
->ei
.entry_file_highpc
= TEXTHIGH (save_pst
);
3580 /* The objfile has its functions reordered if this partial symbol
3581 table overlaps any other partial symbol table.
3582 We cannot assume a reordered objfile if a partial symbol table
3583 is contained within another partial symbol table, as partial symbol
3584 tables for include files with executable code are contained
3585 within the partial symbol table for the including source file,
3586 and we do not want to flag the objfile reordered for these cases.
3588 This strategy works well for Irix-5.2 shared libraries, but we
3589 might have to use a more elaborate (and slower) algorithm for
3591 save_pst
= fdr_to_pst
[f_idx
].pst
;
3592 if (save_pst
!= NULL
3593 && TEXTLOW (save_pst
) != 0
3594 && !(objfile
->flags
& OBJF_REORDERED
))
3596 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3599 && TEXTLOW (save_pst
) >= TEXTLOW (pst
)
3600 && TEXTLOW (save_pst
) < TEXTHIGH (pst
)
3601 && TEXTHIGH (save_pst
) > TEXTHIGH (pst
))
3603 objfile
->flags
|= OBJF_REORDERED
;
3610 /* Now scan the FDRs for dependencies */
3611 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3613 fh
= f_idx
+ debug_info
->fdr
;
3614 pst
= fdr_to_pst
[f_idx
].pst
;
3616 if (pst
== (struct partial_symtab
*) NULL
)
3619 /* This should catch stabs-in-ecoff. */
3623 /* Skip the first file indirect entry as it is a self dependency
3624 for source files or a reverse .h -> .c dependency for header files. */
3625 pst
->number_of_dependencies
= 0;
3627 ((struct partial_symtab
**)
3628 obstack_alloc (&objfile
->psymbol_obstack
,
3630 * sizeof (struct partial_symtab
*))));
3631 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3635 (*swap_rfd_in
) (cur_bfd
,
3636 ((char *) debug_info
->external_rfd
3637 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3639 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3641 complain (&bad_file_number_complaint
, rh
);
3645 /* Skip self dependencies of header files. */
3649 /* Do not add to dependeny list if psymtab was empty. */
3650 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3652 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3656 /* Remove the dummy psymtab created for -O3 images above, if it is
3657 still empty, to enable the detection of stripped executables. */
3658 if (objfile
->psymtabs
->next
== NULL
3659 && objfile
->psymtabs
->number_of_dependencies
== 0
3660 && objfile
->psymtabs
->n_global_syms
== 0
3661 && objfile
->psymtabs
->n_static_syms
== 0)
3662 objfile
->psymtabs
= NULL
;
3663 do_cleanups (old_chain
);
3666 /* If the current psymbol has an enumerated type, we need to add
3667 all the the enum constants to the partial symbol table. */
3670 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3673 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3674 void (*const swap_sym_in
) (bfd
*, PTR
, SYMR
*) = debug_swap
->swap_sym_in
;
3675 char *ext_sym
= ((char *) debug_info
->external_sym
3676 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3686 /* It is an enumerated type if the next symbol entry is a stMember
3687 and its auxiliary index is indexNil or its auxiliary entry
3688 is a plain btNil or btVoid.
3689 Alpha cc -migrate enums are recognized by a zero index and
3690 a zero symbol value.
3691 DU 4.0 cc enums are recognized by a member type of btEnum without
3692 qualifiers and a zero symbol value. */
3693 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3694 if (sh
.st
!= stMember
)
3697 if (sh
.index
== indexNil
3698 || (sh
.index
== 0 && svalue
== 0))
3700 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3701 &(debug_info
->external_aux
3702 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3704 if ((tir
.bt
!= btNil
3706 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3707 || tir
.tq0
!= tqNil
)
3719 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3720 if (sh
.st
!= stMember
)
3722 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3724 /* Note that the value doesn't matter for enum constants
3725 in psymtabs, just in symtabs. */
3726 add_psymbol_to_list (name
, strlen (name
),
3727 VAR_NAMESPACE
, LOC_CONST
,
3728 &objfile
->static_psymbols
, 0,
3729 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3730 ext_sym
+= external_sym_size
;
3734 /* Get the next symbol. OBJFILE is unused. */
3737 mdebug_next_symbol_text (struct objfile
*objfile
)
3742 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3743 ((char *) debug_info
->external_sym
3744 + ((cur_fdr
->isymBase
+ cur_sdx
)
3745 * debug_swap
->external_sym_size
)),
3747 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3750 /* Ancillary function to psymtab_to_symtab(). Does all the work
3751 for turning the partial symtab PST into a symtab, recurring
3752 first on all dependent psymtabs. The argument FILENAME is
3753 only passed so we can see in debug stack traces what file
3756 This function has a split personality, based on whether the
3757 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3758 The flow of control and even the memory allocation differs. FIXME. */
3761 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3763 bfd_size_type external_sym_size
;
3764 bfd_size_type external_pdr_size
;
3765 void (*swap_sym_in
) (bfd
*, PTR
, SYMR
*);
3766 void (*swap_pdr_in
) (bfd
*, PTR
, PDR
*);
3768 struct symtab
*st
= NULL
;
3770 struct linetable
*lines
;
3771 CORE_ADDR lowest_pdr_addr
= 0;
3772 int last_symtab_ended
= 0;
3778 /* Read in all partial symbtabs on which this one is dependent.
3779 NOTE that we do have circular dependencies, sigh. We solved
3780 that by setting pst->readin before this point. */
3782 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3783 if (!pst
->dependencies
[i
]->readin
)
3785 /* Inform about additional files to be read in. */
3788 fputs_filtered (" ", gdb_stdout
);
3790 fputs_filtered ("and ", gdb_stdout
);
3792 printf_filtered ("%s...",
3793 pst
->dependencies
[i
]->filename
);
3794 wrap_here (""); /* Flush output */
3795 gdb_flush (gdb_stdout
);
3797 /* We only pass the filename for debug purposes */
3798 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3799 pst
->dependencies
[i
]->filename
);
3802 /* Do nothing if this is a dummy psymtab. */
3804 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3805 && TEXTLOW (pst
) == 0 && TEXTHIGH (pst
) == 0)
3808 /* Now read the symbols for this symtab */
3810 cur_bfd
= CUR_BFD (pst
);
3811 debug_swap
= DEBUG_SWAP (pst
);
3812 debug_info
= DEBUG_INFO (pst
);
3813 pending_list
= PENDING_LIST (pst
);
3814 external_sym_size
= debug_swap
->external_sym_size
;
3815 external_pdr_size
= debug_swap
->external_pdr_size
;
3816 swap_sym_in
= debug_swap
->swap_sym_in
;
3817 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3818 current_objfile
= pst
->objfile
;
3819 cur_fd
= FDR_IDX (pst
);
3820 fh
= ((cur_fd
== -1)
3822 : debug_info
->fdr
+ cur_fd
);
3825 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3826 processing_gcc_compilation
= 0;
3827 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3831 (*swap_sym_in
) (cur_bfd
,
3832 ((char *) debug_info
->external_sym
3833 + (fh
->isymBase
+ 1) * external_sym_size
),
3835 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3838 /* We indicate that this is a GCC compilation so that certain
3839 features will be enabled in stabsread/dbxread. */
3840 processing_gcc_compilation
= 2;
3844 if (processing_gcc_compilation
!= 0)
3847 /* This symbol table contains stabs-in-ecoff entries. */
3849 /* Parse local symbols first */
3851 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3853 current_objfile
= NULL
;
3856 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3862 (*swap_sym_in
) (cur_bfd
,
3863 (((char *) debug_info
->external_sym
)
3864 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3866 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3868 /* XXX This is a hack. It will go away! */
3869 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3871 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3873 /* We should never get non N_STAB symbols here, but they
3874 should be harmless, so keep process_one_symbol from
3875 complaining about them. */
3876 if (type_code
& N_STAB
)
3878 /* If we found a trailing N_SO with no name, process
3879 it here instead of in process_one_symbol, so we
3880 can keep a handle to its symtab. The symtab
3881 would otherwise be ended twice, once in
3882 process_one_symbol, and once after this loop. */
3883 if (type_code
== N_SO
3885 && previous_stab_code
!= (unsigned char) N_SO
3888 valu
+= ANOFFSET (pst
->section_offsets
,
3889 SECT_OFF_TEXT (pst
->objfile
));
3890 previous_stab_code
= N_SO
;
3891 st
= end_symtab (valu
, pst
->objfile
,
3892 SECT_OFF_TEXT (pst
->objfile
));
3894 last_symtab_ended
= 1;
3898 last_symtab_ended
= 0;
3899 process_one_symbol (type_code
, 0, valu
, name
,
3900 pst
->section_offsets
, pst
->objfile
);
3903 /* Similarly a hack. */
3904 else if (name
[0] == '#')
3906 process_one_symbol (N_SLINE
, 0, valu
, name
,
3907 pst
->section_offsets
, pst
->objfile
);
3909 if (type_code
== N_FUN
)
3911 /* Make up special symbol to contain
3912 procedure specific info */
3913 struct mips_extra_func_info
*e
=
3914 ((struct mips_extra_func_info
*)
3915 obstack_alloc (¤t_objfile
->symbol_obstack
,
3916 sizeof (struct mips_extra_func_info
)));
3917 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3919 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3920 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3921 SYMBOL_CLASS (s
) = LOC_CONST
;
3922 SYMBOL_TYPE (s
) = mdebug_type_void
;
3923 SYMBOL_VALUE (s
) = (long) e
;
3924 e
->pdr
.framereg
= -1;
3925 add_symbol_to_list (s
, &local_symbols
);
3928 else if (sh
.st
== stLabel
)
3930 if (sh
.index
== indexNil
)
3932 /* This is what the gcc2_compiled and __gnu_compiled_*
3933 show up as. So don't complain. */
3938 /* Handle encoded stab line number. */
3939 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3940 record_line (current_subfile
, sh
.index
, valu
);
3943 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3944 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3945 /* These are generated by gcc-2.x, do not complain */
3948 complain (&stab_unknown_complaint
, name
);
3951 if (! last_symtab_ended
)
3953 st
= end_symtab (TEXTHIGH (pst
), pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3957 /* Sort the symbol table now, we are done adding symbols to it.
3958 We must do this before parse_procedure calls lookup_symbol. */
3959 sort_symtab_syms (st
);
3961 /* There used to be a call to sort_blocks here, but this should not
3962 be necessary for stabs symtabs. And as sort_blocks modifies the
3963 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3964 it did the wrong thing if the first procedure in a file was
3965 generated via asm statements. */
3967 /* Fill in procedure info next. */
3971 struct cleanup
*old_chain
;
3977 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3978 old_chain
= make_cleanup (xfree
, pr_block
);
3980 pdr_ptr
= ((char *) debug_info
->external_pdr
3981 + fh
->ipdFirst
* external_pdr_size
);
3982 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3986 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3988 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3990 /* Determine lowest PDR address, the PDRs are not always
3992 if (pdr_in
== pr_block
)
3993 lowest_pdr_addr
= pdr_in
->adr
;
3994 else if (pdr_in
->adr
< lowest_pdr_addr
)
3995 lowest_pdr_addr
= pdr_in
->adr
;
3999 pdr_in_end
= pdr_in
+ fh
->cpd
;
4000 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4001 parse_procedure (pdr_in
, st
, pst
);
4003 do_cleanups (old_chain
);
4008 /* This symbol table contains ordinary ecoff entries. */
4014 /* How many symbols will we need */
4015 /* FIXME, this does not count enum values. */
4016 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4020 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4024 f_max
+= fh
->csym
+ fh
->cpd
;
4025 maxlines
= 2 * fh
->cline
;
4026 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4028 /* The proper language was already determined when building
4029 the psymtab, use it. */
4030 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4033 psymtab_language
= st
->language
;
4035 lines
= LINETABLE (st
);
4037 /* Get a new lexical context */
4039 push_parse_stack ();
4040 top_stack
->cur_st
= st
;
4041 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4043 BLOCK_START (top_stack
->cur_block
) = TEXTLOW (pst
);
4044 BLOCK_END (top_stack
->cur_block
) = 0;
4045 top_stack
->blocktype
= stFile
;
4046 top_stack
->maxsyms
= 2 * f_max
;
4047 top_stack
->cur_type
= 0;
4048 top_stack
->procadr
= 0;
4049 top_stack
->numargs
= 0;
4050 found_ecoff_debugging_info
= 0;
4057 /* Parse local symbols first */
4058 sym_ptr
= ((char *) debug_info
->external_sym
4059 + fh
->isymBase
* external_sym_size
);
4060 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4061 while (sym_ptr
< sym_end
)
4066 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4067 c
= parse_symbol (&sh
,
4068 debug_info
->external_aux
+ fh
->iauxBase
,
4069 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4070 sym_ptr
+= c
* external_sym_size
;
4073 /* Linenumbers. At the end, check if we can save memory.
4074 parse_lines has to look ahead an arbitrary number of PDR
4075 structures, so we swap them all first. */
4079 struct cleanup
*old_chain
;
4085 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4087 old_chain
= make_cleanup (xfree
, pr_block
);
4089 pdr_ptr
= ((char *) debug_info
->external_pdr
4090 + fh
->ipdFirst
* external_pdr_size
);
4091 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4095 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4097 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4099 /* Determine lowest PDR address, the PDRs are not always
4101 if (pdr_in
== pr_block
)
4102 lowest_pdr_addr
= pdr_in
->adr
;
4103 else if (pdr_in
->adr
< lowest_pdr_addr
)
4104 lowest_pdr_addr
= pdr_in
->adr
;
4107 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4108 if (lines
->nitems
< fh
->cline
)
4109 lines
= shrink_linetable (lines
);
4111 /* Fill in procedure info next. */
4113 pdr_in_end
= pdr_in
+ fh
->cpd
;
4114 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4115 parse_procedure (pdr_in
, 0, pst
);
4117 do_cleanups (old_chain
);
4121 LINETABLE (st
) = lines
;
4123 /* .. and our share of externals.
4124 XXX use the global list to speed up things here. how?
4125 FIXME, Maybe quit once we have found the right number of ext's? */
4126 top_stack
->cur_st
= st
;
4127 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4129 top_stack
->blocktype
= stFile
;
4131 = (debug_info
->symbolic_header
.isymMax
4132 + debug_info
->symbolic_header
.ipdMax
4133 + debug_info
->symbolic_header
.iextMax
);
4135 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4136 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4137 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4139 /* If there are undefined symbols, tell the user.
4140 The alpha has an undefined symbol for every symbol that is
4141 from a shared library, so tell the user only if verbose is on. */
4142 if (info_verbose
&& n_undef_symbols
)
4144 printf_filtered ("File %s contains %d unresolved references:",
4145 st
->filename
, n_undef_symbols
);
4146 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4147 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4148 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4155 /* Sort the symbol table now, we are done adding symbols to it. */
4156 sort_symtab_syms (st
);
4161 /* Now link the psymtab and the symtab. */
4164 current_objfile
= NULL
;
4167 /* Ancillary parsing procedures. */
4169 /* Return 1 if the symbol pointed to by SH has a cross reference
4170 to an opaque aggregate type, else 0. */
4173 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4180 if (sh
->index
== indexNil
)
4183 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4184 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4185 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4189 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4190 if (rn
->rfd
== 0xfff)
4191 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4199 /* Lookup the type at relative index RN. Return it in TPP
4200 if found and in any event come up with its name PNAME.
4201 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4202 Return value says how many aux symbols we ate. */
4205 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. */
4206 char **pname
, int bigend
, char *sym_name
)
4215 struct mdebug_pending
*pend
;
4217 *tpp
= (struct type
*) NULL
;
4219 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4221 /* Escape index means 'the next one' */
4222 if (rn
->rfd
== 0xfff)
4225 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4232 /* mips cc uses a rf of -1 for opaque struct definitions.
4233 Set TYPE_FLAG_STUB for these types so that check_typedef will
4234 resolve them if the struct gets defined in another compilation unit. */
4237 *pname
= "<undefined>";
4238 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4242 /* mips cc uses an escaped rn->index of 0 for struct return types
4243 of procedures that were compiled without -g. These will always remain
4245 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4247 *pname
= "<undefined>";
4251 /* Find the relative file descriptor and the symbol in it. */
4252 fh
= get_rfd (fd
, rf
);
4253 xref_fd
= fh
- debug_info
->fdr
;
4255 if (rn
->index
>= fh
->csym
)
4257 /* File indirect entry is corrupt. */
4258 *pname
= "<illegal>";
4259 complain (&bad_rfd_entry_complaint
,
4260 sym_name
, xref_fd
, rn
->index
);
4264 /* If we have processed this symbol then we left a forwarding
4265 pointer to the type in the pending list. If not, we`ll put
4266 it in a list of pending types, to be processed later when
4267 the file will be. In any event, we collect the name for the
4270 esh
= ((char *) debug_info
->external_sym
4271 + ((fh
->isymBase
+ rn
->index
)
4272 * debug_swap
->external_sym_size
));
4273 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4275 /* Make sure that this type of cross reference can be handled. */
4276 if ((sh
.sc
!= scInfo
4277 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4278 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4279 && sh
.st
!= stEnum
))
4280 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4282 /* File indirect entry is corrupt. */
4283 *pname
= "<illegal>";
4284 complain (&bad_rfd_entry_complaint
,
4285 sym_name
, xref_fd
, rn
->index
);
4289 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4291 pend
= is_pending_symbol (fh
, esh
);
4296 /* We have not yet seen this type. */
4298 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4302 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4304 a) forward declarations of structs/unions/enums which are not
4305 defined in this compilation unit.
4306 For these the type will be void. This is a bad design decision
4307 as cross referencing across compilation units is impossible
4308 due to the missing name.
4309 b) forward declarations of structs/unions/enums/typedefs which
4310 are defined later in this file or in another file in the same
4311 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4312 Simply cross reference those again to get the true type.
4313 The forward references are not entered in the pending list and
4314 in the symbol table. */
4316 (*debug_swap
->swap_tir_in
) (bigend
,
4317 &(debug_info
->external_aux
4318 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4320 if (tir
.tq0
!= tqNil
)
4321 complain (&illegal_forward_tq0_complaint
, sym_name
);
4325 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4327 *pname
= "<undefined>";
4334 (debug_info
->external_aux
4335 + fh
->iauxBase
+ sh
.index
+ 1),
4336 tpp
, type_code
, pname
,
4337 fh
->fBigendian
, sym_name
);
4341 /* Follow a forward typedef. This might recursively
4342 call cross_ref till we get a non typedef'ed type.
4343 FIXME: This is not correct behaviour, but gdb currently
4344 cannot handle typedefs without type copying. Type
4345 copying is impossible as we might have mutual forward
4346 references between two files and the copied type would not
4347 get filled in when we later parse its definition. */
4348 *tpp
= parse_type (xref_fd
,
4349 debug_info
->external_aux
+ fh
->iauxBase
,
4353 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4354 add_pending (fh
, esh
, *tpp
);
4358 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
4359 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4365 else if (sh
.st
== stTypedef
)
4367 /* Parse the type for a normal typedef. This might recursively call
4368 cross_ref till we get a non typedef'ed type.
4369 FIXME: This is not correct behaviour, but gdb currently
4370 cannot handle typedefs without type copying. But type copying is
4371 impossible as we might have mutual forward references between
4372 two files and the copied type would not get filled in when
4373 we later parse its definition. */
4374 *tpp
= parse_type (xref_fd
,
4375 debug_info
->external_aux
+ fh
->iauxBase
,
4379 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4383 /* Cross reference to a struct/union/enum which is defined
4384 in another file in the same compilation unit but that file
4385 has not been parsed yet.
4386 Initialize the type only, it will be filled in when
4387 it's definition is parsed. */
4388 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4390 add_pending (fh
, esh
, *tpp
);
4393 /* We used one auxent normally, two if we got a "next one" rf. */
4398 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4399 keeping the symtab sorted */
4401 static struct symbol
*
4402 mylookup_symbol (char *name
, register struct block
*block
,
4403 namespace_enum
namespace, enum address_class
class)
4409 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4411 if (SYMBOL_NAME (sym
)[0] == inc
4412 && SYMBOL_NAMESPACE (sym
) == namespace
4413 && SYMBOL_CLASS (sym
) == class
4414 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4418 block
= BLOCK_SUPERBLOCK (block
);
4420 return mylookup_symbol (name
, block
, namespace, class);
4425 /* Add a new symbol S to a block B.
4426 Infrequently, we will need to reallocate the block to make it bigger.
4427 We only detect this case when adding to top_stack->cur_block, since
4428 that's the only time we know how big the block is. FIXME. */
4431 add_symbol (struct symbol
*s
, struct block
*b
)
4433 int nsyms
= BLOCK_NSYMS (b
)++;
4434 struct block
*origb
;
4435 struct parse_stack
*stackp
;
4437 if (b
== top_stack
->cur_block
&&
4438 nsyms
>= top_stack
->maxsyms
)
4440 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
4441 /* In this case shrink_block is actually grow_block, since
4442 BLOCK_NSYMS(b) is larger than its current size. */
4444 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4446 /* Now run through the stack replacing pointers to the
4447 original block. shrink_block has already done this
4448 for the blockvector and BLOCK_FUNCTION. */
4449 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4451 if (stackp
->cur_block
== origb
)
4453 stackp
->cur_block
= b
;
4454 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4458 BLOCK_SYM (b
, nsyms
) = s
;
4461 /* Add a new block B to a symtab S */
4464 add_block (struct block
*b
, struct symtab
*s
)
4466 struct blockvector
*bv
= BLOCKVECTOR (s
);
4468 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
4469 (sizeof (struct blockvector
)
4470 + BLOCKVECTOR_NBLOCKS (bv
)
4471 * sizeof (bv
->block
)));
4472 if (bv
!= BLOCKVECTOR (s
))
4473 BLOCKVECTOR (s
) = bv
;
4475 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4478 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4479 MIPS' linenumber encoding might need more than one byte
4480 to describe it, LAST is used to detect these continuation lines.
4482 Combining lines with the same line number seems like a bad idea.
4483 E.g: There could be a line number entry with the same line number after the
4484 prologue and GDB should not ignore it (this is a better way to find
4485 a prologue than mips_skip_prologue).
4486 But due to the compressed line table format there are line number entries
4487 for the same line which are needed to bridge the gap to the next
4488 line number entry. These entries have a bogus address info with them
4489 and we are unable to tell them from intended duplicate line number
4491 This is another reason why -ggdb debugging format is preferable. */
4494 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4496 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4497 Change them to something sensible. */
4501 last
= -2; /* make sure we record first line */
4503 if (last
== lineno
) /* skip continuation lines */
4506 lt
->item
[lt
->nitems
].line
= lineno
;
4507 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4511 /* Sorting and reordering procedures */
4513 /* Blocks with a smaller low bound should come first */
4516 compare_blocks (const PTR arg1
, const PTR arg2
)
4518 register int addr_diff
;
4519 struct block
**b1
= (struct block
**) arg1
;
4520 struct block
**b2
= (struct block
**) arg2
;
4522 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4524 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4528 /* Sort the blocks of a symtab S.
4529 Reorder the blocks in the blockvector by code-address,
4530 as required by some MI search routines */
4533 sort_blocks (struct symtab
*s
)
4535 struct blockvector
*bv
= BLOCKVECTOR (s
);
4537 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4540 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4541 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4542 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4543 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4547 * This is very unfortunate: normally all functions are compiled in
4548 * the order they are found, but if the file is compiled -O3 things
4549 * are very different. It would be nice to find a reliable test
4550 * to detect -O3 images in advance.
4552 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4553 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4554 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4555 sizeof (struct block
*),
4559 register CORE_ADDR high
= 0;
4560 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4562 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4563 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4564 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4565 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4568 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4569 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4571 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4572 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4573 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4574 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4578 /* Constructor/restructor/destructor procedures */
4580 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4581 MAXSYMS and linenumbers MAXLINES we'll put in it */
4583 static struct symtab
*
4584 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4586 struct symtab
*s
= allocate_symtab (name
, objfile
);
4588 LINETABLE (s
) = new_linetable (maxlines
);
4590 /* All symtabs must have at least two blocks */
4591 BLOCKVECTOR (s
) = new_bvect (2);
4592 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4593 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4594 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4595 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4597 s
->free_code
= free_linetable
;
4598 s
->debugformat
= obsavestring ("ECOFF", 5,
4599 &objfile
->symbol_obstack
);
4603 /* Allocate a new partial_symtab NAME */
4605 static struct partial_symtab
*
4606 new_psymtab (char *name
, struct objfile
*objfile
)
4608 struct partial_symtab
*psymtab
;
4610 psymtab
= allocate_psymtab (name
, objfile
);
4611 psymtab
->section_offsets
= objfile
->section_offsets
;
4613 /* Keep a backpointer to the file's symbols */
4615 psymtab
->read_symtab_private
= ((char *)
4616 obstack_alloc (&objfile
->psymbol_obstack
,
4617 sizeof (struct symloc
)));
4618 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4619 CUR_BFD (psymtab
) = cur_bfd
;
4620 DEBUG_SWAP (psymtab
) = debug_swap
;
4621 DEBUG_INFO (psymtab
) = debug_info
;
4622 PENDING_LIST (psymtab
) = pending_list
;
4624 /* The way to turn this into a symtab is to call... */
4625 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4630 /* Allocate a linetable array of the given SIZE. Since the struct
4631 already includes one item, we subtract one when calculating the
4632 proper size to allocate. */
4634 static struct linetable
*
4635 new_linetable (int size
)
4637 struct linetable
*l
;
4639 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4640 l
= (struct linetable
*) xmalloc (size
);
4645 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4646 I am not so sure about the 3.4 ones.
4648 Since the struct linetable already includes one item, we subtract one when
4649 calculating the proper size to allocate. */
4651 static struct linetable
*
4652 shrink_linetable (struct linetable
*lt
)
4655 return (struct linetable
*) xrealloc ((PTR
) lt
,
4656 (sizeof (struct linetable
)
4658 * sizeof (lt
->item
))));
4661 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4663 static struct blockvector
*
4664 new_bvect (int nblocks
)
4666 struct blockvector
*bv
;
4669 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4670 bv
= (struct blockvector
*) xzalloc (size
);
4672 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4677 /* Allocate and zero a new block of MAXSYMS symbols */
4679 static struct block
*
4680 new_block (int maxsyms
)
4682 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4684 return (struct block
*) xzalloc (size
);
4687 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4688 Shrink_block can also be used by add_symbol to grow a block. */
4690 static struct block
*
4691 shrink_block (struct block
*b
, struct symtab
*s
)
4694 struct blockvector
*bv
= BLOCKVECTOR (s
);
4697 /* Just reallocate it and fix references to the old one */
4699 new = (struct block
*) xrealloc ((PTR
) b
,
4700 (sizeof (struct block
)
4701 + ((BLOCK_NSYMS (b
) - 1)
4702 * sizeof (struct symbol
*))));
4704 /* Should chase pointers to old one. Fortunately, that`s just
4705 the block`s function and inferior blocks */
4706 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4707 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4708 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4709 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4710 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4711 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4712 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4716 /* Create a new symbol with printname NAME */
4718 static struct symbol
*
4719 new_symbol (char *name
)
4721 struct symbol
*s
= ((struct symbol
*)
4722 obstack_alloc (¤t_objfile
->symbol_obstack
,
4723 sizeof (struct symbol
)));
4725 memset ((PTR
) s
, 0, sizeof (*s
));
4726 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4727 ¤t_objfile
->symbol_obstack
);
4728 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4729 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4733 /* Create a new type with printname NAME */
4735 static struct type
*
4736 new_type (char *name
)
4740 t
= alloc_type (current_objfile
);
4741 TYPE_NAME (t
) = name
;
4742 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4746 /* Read ECOFF debugging information from a BFD section. This is
4747 called from elfread.c. It parses the section into a
4748 ecoff_debug_info struct, and then lets the rest of the file handle
4752 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4753 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4755 bfd
*abfd
= objfile
->obfd
;
4756 struct ecoff_debug_info
*info
;
4758 info
= ((struct ecoff_debug_info
*)
4759 obstack_alloc (&objfile
->psymbol_obstack
,
4760 sizeof (struct ecoff_debug_info
)));
4762 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4763 error ("Error reading ECOFF debugging information: %s",
4764 bfd_errmsg (bfd_get_error ()));
4766 mdebug_build_psymtabs (objfile
, swap
, info
);
4770 /* Things used for calling functions in the inferior.
4771 These functions are exported to our companion
4772 mips-tdep.c file and are here because they play
4773 with the symbol-table explicitly. */
4775 /* Sigtramp: make sure we have all the necessary information
4776 about the signal trampoline code. Since the official code
4777 from MIPS does not do so, we make up that information ourselves.
4778 If they fix the library (unlikely) this code will neutralize itself. */
4780 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4781 here because it calls functions defined in this file, but perhaps
4782 this could be handled in a better way. Only compile it in when
4783 tm-mips.h is included. */
4788 fixup_sigtramp (void)
4792 struct block
*b
, *b0
= NULL
;
4794 sigtramp_address
= -1;
4796 /* We have to handle the following cases here:
4797 a) The Mips library has a sigtramp label within sigvec.
4798 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4799 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4802 b0
= SYMBOL_BLOCK_VALUE (s
);
4803 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4807 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4808 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4811 /* But maybe this program uses its own version of sigvec */
4815 /* Did we or MIPSco fix the library ? */
4816 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4818 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4819 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4823 sigtramp_address
= SYMBOL_VALUE (s
);
4824 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4826 /* But what symtab does it live in ? */
4827 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4830 * Ok, there goes the fix: turn it into a procedure, with all the
4831 * needed info. Note we make it a nested procedure of sigvec,
4832 * which is the way the (assembly) code is actually written.
4834 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4835 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4836 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4838 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4840 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4842 SYMBOL_BLOCK_VALUE (s
) = b
;
4843 BLOCK_START (b
) = sigtramp_address
;
4844 BLOCK_END (b
) = sigtramp_end
;
4845 BLOCK_FUNCTION (b
) = s
;
4846 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4850 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4852 struct mips_extra_func_info
*e
=
4853 ((struct mips_extra_func_info
*)
4854 xzalloc (sizeof (struct mips_extra_func_info
)));
4856 e
->numargs
= 0; /* the kernel thinks otherwise */
4857 e
->pdr
.frameoffset
= 32;
4858 e
->pdr
.framereg
= SP_REGNUM
;
4859 /* Note that setting pcreg is no longer strictly necessary as
4860 mips_frame_saved_pc is now aware of signal handler frames. */
4861 e
->pdr
.pcreg
= PC_REGNUM
;
4862 e
->pdr
.regmask
= -2;
4863 /* Offset to saved r31, in the sigtramp case the saved registers
4864 are above the frame in the sigcontext.
4865 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4866 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4867 and 32 * 4 bytes for the floating point registers. */
4868 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4869 e
->pdr
.fregmask
= -1;
4870 /* Offset to saved f30 (first saved *double* register). */
4871 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4872 e
->pdr
.isym
= (long) s
;
4873 e
->pdr
.adr
= sigtramp_address
;
4875 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4876 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4877 SYMBOL_VALUE (s
) = (long) e
;
4878 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4879 SYMBOL_CLASS (s
) = LOC_CONST
;
4880 SYMBOL_TYPE (s
) = mdebug_type_void
;
4881 current_objfile
= NULL
;
4884 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4887 #endif /* TM_MIPS_H */
4890 _initialize_mdebugread (void)
4893 init_type (TYPE_CODE_VOID
, 1,
4895 "void", (struct objfile
*) NULL
);
4897 init_type (TYPE_CODE_INT
, 1,
4899 "char", (struct objfile
*) NULL
);
4900 mdebug_type_unsigned_char
=
4901 init_type (TYPE_CODE_INT
, 1,
4903 "unsigned char", (struct objfile
*) NULL
);
4905 init_type (TYPE_CODE_INT
, 2,
4907 "short", (struct objfile
*) NULL
);
4908 mdebug_type_unsigned_short
=
4909 init_type (TYPE_CODE_INT
, 2,
4911 "unsigned short", (struct objfile
*) NULL
);
4912 mdebug_type_int_32
=
4913 init_type (TYPE_CODE_INT
, 4,
4915 "int", (struct objfile
*) NULL
);
4916 mdebug_type_unsigned_int_32
=
4917 init_type (TYPE_CODE_INT
, 4,
4919 "unsigned int", (struct objfile
*) NULL
);
4920 mdebug_type_int_64
=
4921 init_type (TYPE_CODE_INT
, 8,
4923 "int", (struct objfile
*) NULL
);
4924 mdebug_type_unsigned_int_64
=
4925 init_type (TYPE_CODE_INT
, 8,
4927 "unsigned int", (struct objfile
*) NULL
);
4928 mdebug_type_long_32
=
4929 init_type (TYPE_CODE_INT
, 4,
4931 "long", (struct objfile
*) NULL
);
4932 mdebug_type_unsigned_long_32
=
4933 init_type (TYPE_CODE_INT
, 4,
4935 "unsigned long", (struct objfile
*) NULL
);
4936 mdebug_type_long_64
=
4937 init_type (TYPE_CODE_INT
, 8,
4939 "long", (struct objfile
*) NULL
);
4940 mdebug_type_unsigned_long_64
=
4941 init_type (TYPE_CODE_INT
, 8,
4943 "unsigned long", (struct objfile
*) NULL
);
4944 mdebug_type_long_long_64
=
4945 init_type (TYPE_CODE_INT
, 8,
4947 "long long", (struct objfile
*) NULL
);
4948 mdebug_type_unsigned_long_long_64
=
4949 init_type (TYPE_CODE_INT
, 8,
4951 "unsigned long long", (struct objfile
*) NULL
);
4952 mdebug_type_adr_32
=
4953 init_type (TYPE_CODE_PTR
, 4,
4955 "adr_32", (struct objfile
*) NULL
);
4956 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4957 mdebug_type_adr_64
=
4958 init_type (TYPE_CODE_PTR
, 8,
4960 "adr_64", (struct objfile
*) NULL
);
4961 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4963 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4965 "float", (struct objfile
*) NULL
);
4966 mdebug_type_double
=
4967 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4969 "double", (struct objfile
*) NULL
);
4970 mdebug_type_complex
=
4971 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4973 "complex", (struct objfile
*) NULL
);
4974 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4975 mdebug_type_double_complex
=
4976 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4978 "double complex", (struct objfile
*) NULL
);
4979 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4981 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4983 mdebug_type_string
=
4984 init_type (TYPE_CODE_STRING
,
4985 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4987 (struct objfile
*) NULL
);
4989 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4990 good? Would we be better off with TYPE_CODE_ERROR? Should
4991 TYPE_CODE_ERROR print things in hex if it knows the size? */
4992 mdebug_type_fixed_dec
=
4993 init_type (TYPE_CODE_INT
,
4994 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4996 (struct objfile
*) NULL
);
4998 mdebug_type_float_dec
=
4999 init_type (TYPE_CODE_ERROR
,
5000 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5001 0, "floating decimal",
5002 (struct objfile
*) NULL
);
5004 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5005 "<function, no debug info>", NULL
);
5006 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5007 nodebug_var_symbol_type
=
5008 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5009 "<variable, no debug info>", NULL
);