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);
2711 stabstring
= xmalloc (len
+ len2
+ 1);
2712 strcpy (stabstring
, stabstring1
);
2714 strcpy (stabstring
+ len
, stabstring2
);
2720 static struct complaint function_outside_compilation_unit
= {
2721 "function `%s' appears to be defined outside of all compilation units", 0, 0
2725 * Standard, external, non-debugger, symbols
2728 case N_TEXT
| N_EXT
:
2729 case N_NBTEXT
| N_EXT
:
2730 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2733 case N_DATA
| N_EXT
:
2734 case N_NBDATA
| N_EXT
:
2735 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2740 case N_NBBSS
| N_EXT
:
2741 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2742 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2749 /* Standard, local, non-debugger, symbols */
2753 /* We need to be able to deal with both N_FN or N_TEXT,
2754 because we have no way of knowing whether the sys-supplied ld
2755 or GNU ld was used to make the executable. Sequents throw
2756 in another wrinkle -- they renumbered N_FN. */
2764 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2767 case N_UNDF
| N_EXT
:
2768 continue; /* Just undefined, not COMMON */
2773 /* Lots of symbol types we can just ignore. */
2780 /* Keep going . . . */
2783 * Special symbol types for GNU
2786 case N_INDR
| N_EXT
:
2788 case N_SETA
| N_EXT
:
2790 case N_SETT
| N_EXT
:
2792 case N_SETD
| N_EXT
:
2794 case N_SETB
| N_EXT
:
2805 static int prev_so_symnum
= -10;
2806 static int first_so_symnum
;
2808 int prev_textlow_not_set
;
2810 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2812 prev_textlow_not_set
= textlow_not_set
;
2814 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2815 /* A zero value is probably an indication for the SunPRO 3.0
2816 compiler. end_psymtab explicitly tests for zero, so
2817 don't relocate it. */
2821 textlow_not_set
= 1;
2825 textlow_not_set
= 0;
2827 textlow_not_set
= 0;
2829 past_first_source_file
= 1;
2831 if (prev_so_symnum
!= symnum
- 1)
2832 { /* Here if prev stab wasn't N_SO */
2833 first_so_symnum
= symnum
;
2837 pst
= (struct partial_symtab
*) 0;
2839 dependencies_used
= 0;
2843 prev_so_symnum
= symnum
;
2845 /* End the current partial symtab and start a new one */
2847 /* SET_NAMESTRING ();*/
2848 namestring
= stabstring
;
2850 /* Null name means end of .o file. Don't start a new one. */
2851 if (*namestring
== '\000')
2854 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2855 The first one is a directory name; the second the file name.
2856 If pst exists, is empty, and has a filename ending in '/',
2857 we assume the previous N_SO was a directory name. */
2859 p
= strrchr (namestring
, '/');
2860 if (p
&& *(p
+ 1) == '\000')
2861 continue; /* Simply ignore directory name SOs */
2863 /* Some other compilers (C++ ones in particular) emit useless
2864 SOs for non-existant .c files. We ignore all subsequent SOs that
2865 immediately follow the first. */
2877 enum language tmp_language
;
2878 /* Mark down an include file in the current psymtab */
2880 /* SET_NAMESTRING ();*/
2881 namestring
= stabstring
;
2883 tmp_language
= deduce_language_from_filename (namestring
);
2885 /* Only change the psymtab's language if we've learned
2886 something useful (eg. tmp_language is not language_unknown).
2887 In addition, to match what start_subfile does, never change
2889 if (tmp_language
!= language_unknown
2890 && (tmp_language
!= language_c
2891 || psymtab_language
!= language_cplus
))
2892 psymtab_language
= tmp_language
;
2894 /* In C++, one may expect the same filename to come round many
2895 times, when code is coming alternately from the main file
2896 and from inline functions in other files. So I check to see
2897 if this is a file we've seen before -- either the main
2898 source file, or a previously included file.
2900 This seems to be a lot of time to be spending on N_SOL, but
2901 things like "break c-exp.y:435" need to work (I
2902 suppose the psymtab_include_list could be hashed or put
2903 in a binary tree, if profiling shows this is a major hog). */
2904 if (pst
&& STREQ (namestring
, pst
->filename
))
2908 for (i
= 0; i
< includes_used
; i
++)
2909 if (STREQ (namestring
, psymtab_include_list
[i
]))
2918 psymtab_include_list
[includes_used
++] = namestring
;
2919 if (includes_used
>= includes_allocated
)
2921 char **orig
= psymtab_include_list
;
2923 psymtab_include_list
= (char **)
2924 alloca ((includes_allocated
*= 2) *
2926 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2927 includes_used
* sizeof (char *));
2931 case N_LSYM
: /* Typedef or automatic variable. */
2932 case N_STSYM
: /* Data seg var -- static */
2933 case N_LCSYM
: /* BSS " */
2934 case N_ROSYM
: /* Read-only data seg var -- static. */
2935 case N_NBSTS
: /* Gould nobase. */
2936 case N_NBLCS
: /* symbols. */
2938 case N_GSYM
: /* Global (extern) variable; can be
2939 data or bss (sigh FIXME). */
2941 /* Following may probably be ignored; I'll leave them here
2942 for now (until I do Pascal and Modula 2 extensions). */
2944 case N_PC
: /* I may or may not need this; I
2946 case N_M2C
: /* I suspect that I can ignore this here. */
2947 case N_SCOPE
: /* Same. */
2949 /* SET_NAMESTRING ();*/
2950 namestring
= stabstring
;
2951 p
= (char *) strchr (namestring
, ':');
2953 continue; /* Not a debugging symbol. */
2957 /* Main processing section for debugging symbols which
2958 the initial read through the symbol tables needs to worry
2959 about. If we reach this point, the symbol which we are
2960 considering is definitely one we are interested in.
2961 p must also contain the (valid) index into the namestring
2962 which indicates the debugging type symbol. */
2967 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2968 #ifdef STATIC_TRANSFORM_NAME
2969 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2971 add_psymbol_to_list (namestring
, p
- namestring
,
2972 VAR_NAMESPACE
, LOC_STATIC
,
2973 &objfile
->static_psymbols
,
2975 psymtab_language
, objfile
);
2978 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2979 /* The addresses in these entries are reported to be
2980 wrong. See the code that reads 'G's for symtabs. */
2981 add_psymbol_to_list (namestring
, p
- namestring
,
2982 VAR_NAMESPACE
, LOC_STATIC
,
2983 &objfile
->global_psymbols
,
2985 psymtab_language
, objfile
);
2989 /* When a 'T' entry is defining an anonymous enum, it
2990 may have a name which is the empty string, or a
2991 single space. Since they're not really defining a
2992 symbol, those shouldn't go in the partial symbol
2993 table. We do pick up the elements of such enums at
2994 'check_enum:', below. */
2995 if (p
>= namestring
+ 2
2996 || (p
== namestring
+ 1
2997 && namestring
[0] != ' '))
2999 add_psymbol_to_list (namestring
, p
- namestring
,
3000 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3001 &objfile
->static_psymbols
,
3003 psymtab_language
, objfile
);
3006 /* Also a typedef with the same name. */
3007 add_psymbol_to_list (namestring
, p
- namestring
,
3008 VAR_NAMESPACE
, LOC_TYPEDEF
,
3009 &objfile
->static_psymbols
,
3011 psymtab_language
, objfile
);
3014 /* The semantics of C++ state that "struct foo { ... }"
3015 also defines a typedef for "foo". Unfortuantely, cfront
3016 never makes the typedef when translating from C++ to C.
3017 We make the typedef here so that "ptype foo" works as
3018 expected for cfront translated code. */
3019 else if (psymtab_language
== language_cplus
)
3021 /* Also a typedef with the same name. */
3022 add_psymbol_to_list (namestring
, p
- namestring
,
3023 VAR_NAMESPACE
, LOC_TYPEDEF
,
3024 &objfile
->static_psymbols
,
3026 psymtab_language
, objfile
);
3031 if (p
!= namestring
) /* a name is there, not just :T... */
3033 add_psymbol_to_list (namestring
, p
- namestring
,
3034 VAR_NAMESPACE
, LOC_TYPEDEF
,
3035 &objfile
->static_psymbols
,
3037 psymtab_language
, objfile
);
3040 /* If this is an enumerated type, we need to
3041 add all the enum constants to the partial symbol
3042 table. This does not cover enums without names, e.g.
3043 "enum {a, b} c;" in C, but fortunately those are
3044 rare. There is no way for GDB to find those from the
3045 enum type without spending too much time on it. Thus
3046 to solve this problem, the compiler needs to put out the
3047 enum in a nameless type. GCC2 does this. */
3049 /* We are looking for something of the form
3050 <name> ":" ("t" | "T") [<number> "="] "e"
3051 {<constant> ":" <value> ","} ";". */
3053 /* Skip over the colon and the 't' or 'T'. */
3055 /* This type may be given a number. Also, numbers can come
3056 in pairs like (0,26). Skip over it. */
3057 while ((*p
>= '0' && *p
<= '9')
3058 || *p
== '(' || *p
== ',' || *p
== ')'
3064 /* The aix4 compiler emits extra crud before the members. */
3067 /* Skip over the type (?). */
3071 /* Skip over the colon. */
3075 /* We have found an enumerated type. */
3076 /* According to comments in read_enum_type
3077 a comma could end it instead of a semicolon.
3078 I don't know where that happens.
3080 while (*p
&& *p
!= ';' && *p
!= ',')
3084 /* Check for and handle cretinous dbx symbol name
3086 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3087 p
= next_symbol_text (objfile
);
3089 /* Point to the character after the name
3090 of the enum constant. */
3091 for (q
= p
; *q
&& *q
!= ':'; q
++)
3093 /* Note that the value doesn't matter for
3094 enum constants in psymtabs, just in symtabs. */
3095 add_psymbol_to_list (p
, q
- p
,
3096 VAR_NAMESPACE
, LOC_CONST
,
3097 &objfile
->static_psymbols
, 0,
3098 0, psymtab_language
, objfile
);
3099 /* Point past the name. */
3101 /* Skip over the value. */
3102 while (*p
&& *p
!= ',')
3104 /* Advance past the comma. */
3111 /* Constant, e.g. from "const" in Pascal. */
3112 add_psymbol_to_list (namestring
, p
- namestring
,
3113 VAR_NAMESPACE
, LOC_CONST
,
3114 &objfile
->static_psymbols
, sh
.value
,
3115 0, psymtab_language
, objfile
);
3121 int name_len
= p
- namestring
;
3122 char *name
= xmalloc (name_len
+ 1);
3123 memcpy (name
, namestring
, name_len
);
3124 name
[name_len
] = '\0';
3125 complain (&function_outside_compilation_unit
, name
);
3128 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3129 add_psymbol_to_list (namestring
, p
- namestring
,
3130 VAR_NAMESPACE
, LOC_BLOCK
,
3131 &objfile
->static_psymbols
,
3133 psymtab_language
, objfile
);
3136 /* Global functions were ignored here, but now they
3137 are put into the global psymtab like one would expect.
3138 They're also in the minimal symbol table. */
3142 int name_len
= p
- namestring
;
3143 char *name
= xmalloc (name_len
+ 1);
3144 memcpy (name
, namestring
, name_len
);
3145 name
[name_len
] = '\0';
3146 complain (&function_outside_compilation_unit
, name
);
3149 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3150 add_psymbol_to_list (namestring
, p
- namestring
,
3151 VAR_NAMESPACE
, LOC_BLOCK
,
3152 &objfile
->global_psymbols
,
3154 psymtab_language
, objfile
);
3157 /* Two things show up here (hopefully); static symbols of
3158 local scope (static used inside braces) or extensions
3159 of structure symbols. We can ignore both. */
3173 case '#': /* for symbol identification (used in live ranges) */
3174 /* added to support cfront stabs strings */
3175 case 'Z': /* for definition continuations */
3176 case 'P': /* for prototypes */
3180 /* It is a C++ nested symbol. We don't need to record it
3181 (I don't think); if we try to look up foo::bar::baz,
3182 then symbols for the symtab containing foo should get
3183 read in, I think. */
3184 /* Someone says sun cc puts out symbols like
3185 /foo/baz/maclib::/usr/local/bin/maclib,
3186 which would get here with a symbol type of ':'. */
3190 /* Unexpected symbol descriptor. The second and subsequent stabs
3191 of a continued stab can show up here. The question is
3192 whether they ever can mimic a normal stab--it would be
3193 nice if not, since we certainly don't want to spend the
3194 time searching to the end of every string looking for
3197 complain (&unknown_symchar_complaint
, p
[1]);
3199 /* Ignore it; perhaps it is an extension that we don't
3208 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3209 /* Solaris 2 end of module, finish current partial symbol table.
3210 END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which
3211 is necessary if a module compiled without debugging info
3212 follows this module. */
3215 pst
= (struct partial_symtab
*) 0;
3217 dependencies_used
= 0;
3223 if (sh
.value
> TEXTHIGH (save_pst
))
3224 TEXTHIGH (save_pst
) = sh
.value
;
3229 case N_SSYM
: /* Claim: Structure or union element.
3230 Hopefully, I can ignore this. */
3231 case N_ENTRY
: /* Alternate entry point; can ignore. */
3232 case N_MAIN
: /* Can definitely ignore this. */
3233 case N_CATCH
: /* These are GNU C++ extensions */
3234 case N_EHDECL
: /* that can safely be ignored here. */
3244 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3245 case N_DEFD
: /* GNU Modula-2 */
3246 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3248 case N_OBJ
: /* useless types from Solaris */
3250 /* These symbols aren't interesting; don't worry about them */
3255 /* If we haven't found it yet, ignore it. It's probably some
3256 new type we don't know about yet. */
3257 complain (&unknown_symtype_complaint
,
3258 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3262 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3265 /* end - Handle continuation */
3270 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3273 enum address_class
class;
3275 (*swap_sym_in
) (cur_bfd
,
3276 ((char *) debug_info
->external_sym
3277 + ((fh
->isymBase
+ cur_sdx
)
3278 * external_sym_size
)),
3281 if (ECOFF_IS_STAB (&sh
))
3287 /* Non absolute static symbols go into the minimal table. */
3288 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3289 || (sh
.index
== indexNil
3290 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3292 /* FIXME, premature? */
3297 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3303 /* The value of a stEnd symbol is the displacement from the
3304 corresponding start symbol value, do not relocate it. */
3306 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3313 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3317 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3328 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3329 mst_file_text
, NULL
,
3330 SECT_OFF_TEXT (objfile
), NULL
,
3336 /* Usually there is a local and a global stProc symbol
3337 for a function. This means that the function name
3338 has already been entered into the mimimal symbol table
3339 while processing the global symbols in pass 2 above.
3340 One notable exception is the PROGRAM name from
3341 f77 compiled executables, it is only put out as
3342 local stProc symbol, and a global MAIN__ stProc symbol
3343 points to it. It doesn't matter though, as gdb is
3344 still able to find the PROGRAM name via the partial
3345 symbol table, and the MAIN__ symbol via the minimal
3347 if (sh
.st
== stProc
)
3348 add_psymbol_to_list (name
, strlen (name
),
3349 VAR_NAMESPACE
, LOC_BLOCK
,
3350 &objfile
->global_psymbols
,
3351 0, sh
.value
, psymtab_language
, objfile
);
3353 add_psymbol_to_list (name
, strlen (name
),
3354 VAR_NAMESPACE
, LOC_BLOCK
,
3355 &objfile
->static_psymbols
,
3356 0, sh
.value
, psymtab_language
, objfile
);
3358 /* Skip over procedure to next one. */
3359 if (sh
.index
>= hdr
->iauxMax
)
3361 /* Should not happen, but does when cross-compiling
3362 with the MIPS compiler. FIXME -- pull later. */
3363 complain (&index_complaint
, name
);
3364 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3367 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3368 (debug_info
->external_aux
3371 procaddr
= sh
.value
;
3373 if (new_sdx
<= cur_sdx
)
3375 /* This should not happen either... FIXME. */
3376 complain (&aux_index_complaint
, name
);
3377 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3381 (*swap_sym_in
) (cur_bfd
,
3382 ((char *) debug_info
->external_sym
3383 + ((fh
->isymBase
+ cur_sdx
- 1)
3384 * external_sym_size
)),
3389 /* Kludge for Irix 5.2 zero fh->adr. */
3391 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
3392 TEXTLOW (pst
) = procaddr
;
3394 high
= procaddr
+ sh
.value
;
3395 if (high
> TEXTHIGH (pst
))
3396 TEXTHIGH (pst
) = high
;
3399 case stStatic
: /* Variable */
3400 if (SC_IS_DATA (sh
.sc
))
3401 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3402 mst_file_data
, NULL
,
3403 SECT_OFF_DATA (objfile
),
3407 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3409 SECT_OFF_BSS (objfile
),
3415 case stIndirect
: /* Irix5 forward declaration */
3416 /* Skip forward declarations from Irix5 cc */
3419 case stTypedef
: /* Typedef */
3420 /* Skip typedefs for forward declarations and opaque
3421 structs from alpha and mips cc. */
3422 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3424 class = LOC_TYPEDEF
;
3427 case stConstant
: /* Constant decl */
3434 case stBlock
: /* { }, str, un, enum */
3435 /* Do not create a partial symbol for cc unnamed aggregates
3436 and gcc empty aggregates. */
3437 if ((sh
.sc
== scInfo
3438 || SC_IS_COMMON (sh
.sc
))
3440 && sh
.index
!= cur_sdx
+ 2)
3442 add_psymbol_to_list (name
, strlen (name
),
3443 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3444 &objfile
->static_psymbols
,
3446 psymtab_language
, objfile
);
3448 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3450 /* Skip over the block */
3452 if (new_sdx
<= cur_sdx
)
3454 /* This happens with the Ultrix kernel. */
3455 complain (&block_index_complaint
, name
);
3456 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3461 case stFile
: /* File headers */
3462 case stLabel
: /* Labels */
3463 case stEnd
: /* Ends of files */
3466 case stLocal
: /* Local variables */
3467 /* Normally these are skipped because we skip over
3468 all blocks we see. However, these can occur
3469 as visible symbols in a .h file that contains code. */
3473 /* Both complaints are valid: one gives symbol name,
3474 the other the offending symbol type. */
3475 complain (&unknown_sym_complaint
, name
);
3476 complain (&unknown_st_complaint
, sh
.st
);
3480 /* Use this gdb symbol */
3481 add_psymbol_to_list (name
, strlen (name
),
3482 VAR_NAMESPACE
, class,
3483 &objfile
->static_psymbols
,
3484 0, sh
.value
, psymtab_language
, objfile
);
3486 cur_sdx
++; /* Go to next file symbol */
3489 /* Now do enter the external symbols. */
3490 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3491 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3492 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3493 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3494 for (; --cur_sdx
>= 0; ext_ptr
++)
3496 enum address_class
class;
3501 if (ext_ptr
->ifd
!= f_idx
)
3502 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3503 psh
= &ext_ptr
->asym
;
3505 /* Do not add undefined symbols to the partial symbol table. */
3506 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3509 svalue
= psh
->value
;
3514 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3521 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3525 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3532 /* These are generated for static symbols in .o files,
3537 /* External procedure symbols have been entered
3538 into the minimal symbol table in pass 2 above.
3539 Ignore them, as parse_external will ignore them too. */
3545 complain (&unknown_ext_complaint
,
3546 debug_info
->ssext
+ psh
->iss
);
3547 /* Fall through, pretend it's global. */
3549 /* Global common symbols are resolved by the runtime loader,
3551 if (SC_IS_COMMON (psh
->sc
))
3557 name
= debug_info
->ssext
+ psh
->iss
;
3558 add_psymbol_to_list (name
, strlen (name
),
3559 VAR_NAMESPACE
, class,
3560 &objfile
->global_psymbols
,
3562 psymtab_language
, objfile
);
3566 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3567 empty and put on the free list. */
3568 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3569 psymtab_include_list
, includes_used
,
3570 -1, TEXTHIGH (save_pst
),
3571 dependency_list
, dependencies_used
, textlow_not_set
);
3573 dependencies_used
= 0;
3575 if (objfile
->ei
.entry_point
>= TEXTLOW (save_pst
) &&
3576 objfile
->ei
.entry_point
< TEXTHIGH (save_pst
))
3578 objfile
->ei
.entry_file_lowpc
= TEXTLOW (save_pst
);
3579 objfile
->ei
.entry_file_highpc
= TEXTHIGH (save_pst
);
3582 /* The objfile has its functions reordered if this partial symbol
3583 table overlaps any other partial symbol table.
3584 We cannot assume a reordered objfile if a partial symbol table
3585 is contained within another partial symbol table, as partial symbol
3586 tables for include files with executable code are contained
3587 within the partial symbol table for the including source file,
3588 and we do not want to flag the objfile reordered for these cases.
3590 This strategy works well for Irix-5.2 shared libraries, but we
3591 might have to use a more elaborate (and slower) algorithm for
3593 save_pst
= fdr_to_pst
[f_idx
].pst
;
3594 if (save_pst
!= NULL
3595 && TEXTLOW (save_pst
) != 0
3596 && !(objfile
->flags
& OBJF_REORDERED
))
3598 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3601 && TEXTLOW (save_pst
) >= TEXTLOW (pst
)
3602 && TEXTLOW (save_pst
) < TEXTHIGH (pst
)
3603 && TEXTHIGH (save_pst
) > TEXTHIGH (pst
))
3605 objfile
->flags
|= OBJF_REORDERED
;
3612 /* Now scan the FDRs for dependencies */
3613 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3615 fh
= f_idx
+ debug_info
->fdr
;
3616 pst
= fdr_to_pst
[f_idx
].pst
;
3618 if (pst
== (struct partial_symtab
*) NULL
)
3621 /* This should catch stabs-in-ecoff. */
3625 /* Skip the first file indirect entry as it is a self dependency
3626 for source files or a reverse .h -> .c dependency for header files. */
3627 pst
->number_of_dependencies
= 0;
3629 ((struct partial_symtab
**)
3630 obstack_alloc (&objfile
->psymbol_obstack
,
3632 * sizeof (struct partial_symtab
*))));
3633 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3637 (*swap_rfd_in
) (cur_bfd
,
3638 ((char *) debug_info
->external_rfd
3639 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3641 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3643 complain (&bad_file_number_complaint
, rh
);
3647 /* Skip self dependencies of header files. */
3651 /* Do not add to dependeny list if psymtab was empty. */
3652 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3654 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3658 /* Remove the dummy psymtab created for -O3 images above, if it is
3659 still empty, to enable the detection of stripped executables. */
3660 if (objfile
->psymtabs
->next
== NULL
3661 && objfile
->psymtabs
->number_of_dependencies
== 0
3662 && objfile
->psymtabs
->n_global_syms
== 0
3663 && objfile
->psymtabs
->n_static_syms
== 0)
3664 objfile
->psymtabs
= NULL
;
3665 do_cleanups (old_chain
);
3668 /* If the current psymbol has an enumerated type, we need to add
3669 all the the enum constants to the partial symbol table. */
3672 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3675 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3676 void (*const swap_sym_in
) (bfd
*, PTR
, SYMR
*) = debug_swap
->swap_sym_in
;
3677 char *ext_sym
= ((char *) debug_info
->external_sym
3678 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3688 /* It is an enumerated type if the next symbol entry is a stMember
3689 and its auxiliary index is indexNil or its auxiliary entry
3690 is a plain btNil or btVoid.
3691 Alpha cc -migrate enums are recognized by a zero index and
3692 a zero symbol value.
3693 DU 4.0 cc enums are recognized by a member type of btEnum without
3694 qualifiers and a zero symbol value. */
3695 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3696 if (sh
.st
!= stMember
)
3699 if (sh
.index
== indexNil
3700 || (sh
.index
== 0 && svalue
== 0))
3702 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3703 &(debug_info
->external_aux
3704 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3706 if ((tir
.bt
!= btNil
3708 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3709 || tir
.tq0
!= tqNil
)
3721 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3722 if (sh
.st
!= stMember
)
3724 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3726 /* Note that the value doesn't matter for enum constants
3727 in psymtabs, just in symtabs. */
3728 add_psymbol_to_list (name
, strlen (name
),
3729 VAR_NAMESPACE
, LOC_CONST
,
3730 &objfile
->static_psymbols
, 0,
3731 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3732 ext_sym
+= external_sym_size
;
3736 /* Get the next symbol. OBJFILE is unused. */
3739 mdebug_next_symbol_text (struct objfile
*objfile
)
3744 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3745 ((char *) debug_info
->external_sym
3746 + ((cur_fdr
->isymBase
+ cur_sdx
)
3747 * debug_swap
->external_sym_size
)),
3749 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3752 /* Ancillary function to psymtab_to_symtab(). Does all the work
3753 for turning the partial symtab PST into a symtab, recurring
3754 first on all dependent psymtabs. The argument FILENAME is
3755 only passed so we can see in debug stack traces what file
3758 This function has a split personality, based on whether the
3759 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3760 The flow of control and even the memory allocation differs. FIXME. */
3763 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3765 bfd_size_type external_sym_size
;
3766 bfd_size_type external_pdr_size
;
3767 void (*swap_sym_in
) (bfd
*, PTR
, SYMR
*);
3768 void (*swap_pdr_in
) (bfd
*, PTR
, PDR
*);
3770 struct symtab
*st
= NULL
;
3772 struct linetable
*lines
;
3773 CORE_ADDR lowest_pdr_addr
= 0;
3774 int last_symtab_ended
= 0;
3780 /* Read in all partial symbtabs on which this one is dependent.
3781 NOTE that we do have circular dependencies, sigh. We solved
3782 that by setting pst->readin before this point. */
3784 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3785 if (!pst
->dependencies
[i
]->readin
)
3787 /* Inform about additional files to be read in. */
3790 fputs_filtered (" ", gdb_stdout
);
3792 fputs_filtered ("and ", gdb_stdout
);
3794 printf_filtered ("%s...",
3795 pst
->dependencies
[i
]->filename
);
3796 wrap_here (""); /* Flush output */
3797 gdb_flush (gdb_stdout
);
3799 /* We only pass the filename for debug purposes */
3800 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3801 pst
->dependencies
[i
]->filename
);
3804 /* Do nothing if this is a dummy psymtab. */
3806 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3807 && TEXTLOW (pst
) == 0 && TEXTHIGH (pst
) == 0)
3810 /* Now read the symbols for this symtab */
3812 cur_bfd
= CUR_BFD (pst
);
3813 debug_swap
= DEBUG_SWAP (pst
);
3814 debug_info
= DEBUG_INFO (pst
);
3815 pending_list
= PENDING_LIST (pst
);
3816 external_sym_size
= debug_swap
->external_sym_size
;
3817 external_pdr_size
= debug_swap
->external_pdr_size
;
3818 swap_sym_in
= debug_swap
->swap_sym_in
;
3819 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3820 current_objfile
= pst
->objfile
;
3821 cur_fd
= FDR_IDX (pst
);
3822 fh
= ((cur_fd
== -1)
3824 : debug_info
->fdr
+ cur_fd
);
3827 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3828 processing_gcc_compilation
= 0;
3829 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3833 (*swap_sym_in
) (cur_bfd
,
3834 ((char *) debug_info
->external_sym
3835 + (fh
->isymBase
+ 1) * external_sym_size
),
3837 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3840 /* We indicate that this is a GCC compilation so that certain
3841 features will be enabled in stabsread/dbxread. */
3842 processing_gcc_compilation
= 2;
3846 if (processing_gcc_compilation
!= 0)
3849 /* This symbol table contains stabs-in-ecoff entries. */
3851 /* Parse local symbols first */
3853 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3855 current_objfile
= NULL
;
3858 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3864 (*swap_sym_in
) (cur_bfd
,
3865 (((char *) debug_info
->external_sym
)
3866 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3868 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3870 /* XXX This is a hack. It will go away! */
3871 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3873 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3875 /* We should never get non N_STAB symbols here, but they
3876 should be harmless, so keep process_one_symbol from
3877 complaining about them. */
3878 if (type_code
& N_STAB
)
3880 /* If we found a trailing N_SO with no name, process
3881 it here instead of in process_one_symbol, so we
3882 can keep a handle to its symtab. The symtab
3883 would otherwise be ended twice, once in
3884 process_one_symbol, and once after this loop. */
3885 if (type_code
== N_SO
3887 && previous_stab_code
!= (unsigned char) N_SO
3890 valu
+= ANOFFSET (pst
->section_offsets
,
3891 SECT_OFF_TEXT (pst
->objfile
));
3892 previous_stab_code
= N_SO
;
3893 st
= end_symtab (valu
, pst
->objfile
,
3894 SECT_OFF_TEXT (pst
->objfile
));
3896 last_symtab_ended
= 1;
3900 last_symtab_ended
= 0;
3901 process_one_symbol (type_code
, 0, valu
, name
,
3902 pst
->section_offsets
, pst
->objfile
);
3905 /* Similarly a hack. */
3906 else if (name
[0] == '#')
3908 process_one_symbol (N_SLINE
, 0, valu
, name
,
3909 pst
->section_offsets
, pst
->objfile
);
3911 if (type_code
== N_FUN
)
3913 /* Make up special symbol to contain
3914 procedure specific info */
3915 struct mips_extra_func_info
*e
=
3916 ((struct mips_extra_func_info
*)
3917 obstack_alloc (¤t_objfile
->symbol_obstack
,
3918 sizeof (struct mips_extra_func_info
)));
3919 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3921 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3922 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3923 SYMBOL_CLASS (s
) = LOC_CONST
;
3924 SYMBOL_TYPE (s
) = mdebug_type_void
;
3925 SYMBOL_VALUE (s
) = (long) e
;
3926 e
->pdr
.framereg
= -1;
3927 add_symbol_to_list (s
, &local_symbols
);
3930 else if (sh
.st
== stLabel
)
3932 if (sh
.index
== indexNil
)
3934 /* This is what the gcc2_compiled and __gnu_compiled_*
3935 show up as. So don't complain. */
3940 /* Handle encoded stab line number. */
3941 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3942 record_line (current_subfile
, sh
.index
, valu
);
3945 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3946 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3947 /* These are generated by gcc-2.x, do not complain */
3950 complain (&stab_unknown_complaint
, name
);
3953 if (! last_symtab_ended
)
3955 st
= end_symtab (TEXTHIGH (pst
), pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3959 /* Sort the symbol table now, we are done adding symbols to it.
3960 We must do this before parse_procedure calls lookup_symbol. */
3961 sort_symtab_syms (st
);
3963 /* There used to be a call to sort_blocks here, but this should not
3964 be necessary for stabs symtabs. And as sort_blocks modifies the
3965 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3966 it did the wrong thing if the first procedure in a file was
3967 generated via asm statements. */
3969 /* Fill in procedure info next. */
3973 struct cleanup
*old_chain
;
3979 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3980 old_chain
= make_cleanup (xfree
, pr_block
);
3982 pdr_ptr
= ((char *) debug_info
->external_pdr
3983 + fh
->ipdFirst
* external_pdr_size
);
3984 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3988 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3990 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3992 /* Determine lowest PDR address, the PDRs are not always
3994 if (pdr_in
== pr_block
)
3995 lowest_pdr_addr
= pdr_in
->adr
;
3996 else if (pdr_in
->adr
< lowest_pdr_addr
)
3997 lowest_pdr_addr
= pdr_in
->adr
;
4001 pdr_in_end
= pdr_in
+ fh
->cpd
;
4002 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4003 parse_procedure (pdr_in
, st
, pst
);
4005 do_cleanups (old_chain
);
4010 /* This symbol table contains ordinary ecoff entries. */
4016 /* How many symbols will we need */
4017 /* FIXME, this does not count enum values. */
4018 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4022 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4026 f_max
+= fh
->csym
+ fh
->cpd
;
4027 maxlines
= 2 * fh
->cline
;
4028 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4030 /* The proper language was already determined when building
4031 the psymtab, use it. */
4032 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4035 psymtab_language
= st
->language
;
4037 lines
= LINETABLE (st
);
4039 /* Get a new lexical context */
4041 push_parse_stack ();
4042 top_stack
->cur_st
= st
;
4043 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4045 BLOCK_START (top_stack
->cur_block
) = TEXTLOW (pst
);
4046 BLOCK_END (top_stack
->cur_block
) = 0;
4047 top_stack
->blocktype
= stFile
;
4048 top_stack
->maxsyms
= 2 * f_max
;
4049 top_stack
->cur_type
= 0;
4050 top_stack
->procadr
= 0;
4051 top_stack
->numargs
= 0;
4052 found_ecoff_debugging_info
= 0;
4059 /* Parse local symbols first */
4060 sym_ptr
= ((char *) debug_info
->external_sym
4061 + fh
->isymBase
* external_sym_size
);
4062 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4063 while (sym_ptr
< sym_end
)
4068 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4069 c
= parse_symbol (&sh
,
4070 debug_info
->external_aux
+ fh
->iauxBase
,
4071 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4072 sym_ptr
+= c
* external_sym_size
;
4075 /* Linenumbers. At the end, check if we can save memory.
4076 parse_lines has to look ahead an arbitrary number of PDR
4077 structures, so we swap them all first. */
4081 struct cleanup
*old_chain
;
4087 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4089 old_chain
= make_cleanup (xfree
, pr_block
);
4091 pdr_ptr
= ((char *) debug_info
->external_pdr
4092 + fh
->ipdFirst
* external_pdr_size
);
4093 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4097 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4099 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4101 /* Determine lowest PDR address, the PDRs are not always
4103 if (pdr_in
== pr_block
)
4104 lowest_pdr_addr
= pdr_in
->adr
;
4105 else if (pdr_in
->adr
< lowest_pdr_addr
)
4106 lowest_pdr_addr
= pdr_in
->adr
;
4109 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4110 if (lines
->nitems
< fh
->cline
)
4111 lines
= shrink_linetable (lines
);
4113 /* Fill in procedure info next. */
4115 pdr_in_end
= pdr_in
+ fh
->cpd
;
4116 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4117 parse_procedure (pdr_in
, 0, pst
);
4119 do_cleanups (old_chain
);
4123 LINETABLE (st
) = lines
;
4125 /* .. and our share of externals.
4126 XXX use the global list to speed up things here. how?
4127 FIXME, Maybe quit once we have found the right number of ext's? */
4128 top_stack
->cur_st
= st
;
4129 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4131 top_stack
->blocktype
= stFile
;
4133 = (debug_info
->symbolic_header
.isymMax
4134 + debug_info
->symbolic_header
.ipdMax
4135 + debug_info
->symbolic_header
.iextMax
);
4137 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4138 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4139 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4141 /* If there are undefined symbols, tell the user.
4142 The alpha has an undefined symbol for every symbol that is
4143 from a shared library, so tell the user only if verbose is on. */
4144 if (info_verbose
&& n_undef_symbols
)
4146 printf_filtered ("File %s contains %d unresolved references:",
4147 st
->filename
, n_undef_symbols
);
4148 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4149 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4150 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4157 /* Sort the symbol table now, we are done adding symbols to it. */
4158 sort_symtab_syms (st
);
4163 /* Now link the psymtab and the symtab. */
4166 current_objfile
= NULL
;
4169 /* Ancillary parsing procedures. */
4171 /* Return 1 if the symbol pointed to by SH has a cross reference
4172 to an opaque aggregate type, else 0. */
4175 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4182 if (sh
->index
== indexNil
)
4185 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4186 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4187 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4191 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4192 if (rn
->rfd
== 0xfff)
4193 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4201 /* Lookup the type at relative index RN. Return it in TPP
4202 if found and in any event come up with its name PNAME.
4203 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4204 Return value says how many aux symbols we ate. */
4207 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. */
4208 char **pname
, int bigend
, char *sym_name
)
4217 struct mdebug_pending
*pend
;
4219 *tpp
= (struct type
*) NULL
;
4221 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4223 /* Escape index means 'the next one' */
4224 if (rn
->rfd
== 0xfff)
4227 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4234 /* mips cc uses a rf of -1 for opaque struct definitions.
4235 Set TYPE_FLAG_STUB for these types so that check_typedef will
4236 resolve them if the struct gets defined in another compilation unit. */
4239 *pname
= "<undefined>";
4240 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4244 /* mips cc uses an escaped rn->index of 0 for struct return types
4245 of procedures that were compiled without -g. These will always remain
4247 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4249 *pname
= "<undefined>";
4253 /* Find the relative file descriptor and the symbol in it. */
4254 fh
= get_rfd (fd
, rf
);
4255 xref_fd
= fh
- debug_info
->fdr
;
4257 if (rn
->index
>= fh
->csym
)
4259 /* File indirect entry is corrupt. */
4260 *pname
= "<illegal>";
4261 complain (&bad_rfd_entry_complaint
,
4262 sym_name
, xref_fd
, rn
->index
);
4266 /* If we have processed this symbol then we left a forwarding
4267 pointer to the type in the pending list. If not, we`ll put
4268 it in a list of pending types, to be processed later when
4269 the file will be. In any event, we collect the name for the
4272 esh
= ((char *) debug_info
->external_sym
4273 + ((fh
->isymBase
+ rn
->index
)
4274 * debug_swap
->external_sym_size
));
4275 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4277 /* Make sure that this type of cross reference can be handled. */
4278 if ((sh
.sc
!= scInfo
4279 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4280 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4281 && sh
.st
!= stEnum
))
4282 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4284 /* File indirect entry is corrupt. */
4285 *pname
= "<illegal>";
4286 complain (&bad_rfd_entry_complaint
,
4287 sym_name
, xref_fd
, rn
->index
);
4291 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4293 pend
= is_pending_symbol (fh
, esh
);
4298 /* We have not yet seen this type. */
4300 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4304 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4306 a) forward declarations of structs/unions/enums which are not
4307 defined in this compilation unit.
4308 For these the type will be void. This is a bad design decision
4309 as cross referencing across compilation units is impossible
4310 due to the missing name.
4311 b) forward declarations of structs/unions/enums/typedefs which
4312 are defined later in this file or in another file in the same
4313 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4314 Simply cross reference those again to get the true type.
4315 The forward references are not entered in the pending list and
4316 in the symbol table. */
4318 (*debug_swap
->swap_tir_in
) (bigend
,
4319 &(debug_info
->external_aux
4320 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4322 if (tir
.tq0
!= tqNil
)
4323 complain (&illegal_forward_tq0_complaint
, sym_name
);
4327 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4329 *pname
= "<undefined>";
4336 (debug_info
->external_aux
4337 + fh
->iauxBase
+ sh
.index
+ 1),
4338 tpp
, type_code
, pname
,
4339 fh
->fBigendian
, sym_name
);
4343 /* Follow a forward typedef. This might recursively
4344 call cross_ref till we get a non typedef'ed type.
4345 FIXME: This is not correct behaviour, but gdb currently
4346 cannot handle typedefs without type copying. Type
4347 copying is impossible as we might have mutual forward
4348 references between two files and the copied type would not
4349 get filled in when we later parse its definition. */
4350 *tpp
= parse_type (xref_fd
,
4351 debug_info
->external_aux
+ fh
->iauxBase
,
4355 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4356 add_pending (fh
, esh
, *tpp
);
4360 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
4361 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4367 else if (sh
.st
== stTypedef
)
4369 /* Parse the type for a normal typedef. This might recursively call
4370 cross_ref till we get a non typedef'ed type.
4371 FIXME: This is not correct behaviour, but gdb currently
4372 cannot handle typedefs without type copying. But type copying is
4373 impossible as we might have mutual forward references between
4374 two files and the copied type would not get filled in when
4375 we later parse its definition. */
4376 *tpp
= parse_type (xref_fd
,
4377 debug_info
->external_aux
+ fh
->iauxBase
,
4381 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4385 /* Cross reference to a struct/union/enum which is defined
4386 in another file in the same compilation unit but that file
4387 has not been parsed yet.
4388 Initialize the type only, it will be filled in when
4389 it's definition is parsed. */
4390 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4392 add_pending (fh
, esh
, *tpp
);
4395 /* We used one auxent normally, two if we got a "next one" rf. */
4400 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4401 keeping the symtab sorted */
4403 static struct symbol
*
4404 mylookup_symbol (char *name
, register struct block
*block
,
4405 namespace_enum
namespace, enum address_class
class)
4411 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4413 if (SYMBOL_NAME (sym
)[0] == inc
4414 && SYMBOL_NAMESPACE (sym
) == namespace
4415 && SYMBOL_CLASS (sym
) == class
4416 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4420 block
= BLOCK_SUPERBLOCK (block
);
4422 return mylookup_symbol (name
, block
, namespace, class);
4427 /* Add a new symbol S to a block B.
4428 Infrequently, we will need to reallocate the block to make it bigger.
4429 We only detect this case when adding to top_stack->cur_block, since
4430 that's the only time we know how big the block is. FIXME. */
4433 add_symbol (struct symbol
*s
, struct block
*b
)
4435 int nsyms
= BLOCK_NSYMS (b
)++;
4436 struct block
*origb
;
4437 struct parse_stack
*stackp
;
4439 if (b
== top_stack
->cur_block
&&
4440 nsyms
>= top_stack
->maxsyms
)
4442 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
4443 /* In this case shrink_block is actually grow_block, since
4444 BLOCK_NSYMS(b) is larger than its current size. */
4446 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4448 /* Now run through the stack replacing pointers to the
4449 original block. shrink_block has already done this
4450 for the blockvector and BLOCK_FUNCTION. */
4451 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4453 if (stackp
->cur_block
== origb
)
4455 stackp
->cur_block
= b
;
4456 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4460 BLOCK_SYM (b
, nsyms
) = s
;
4463 /* Add a new block B to a symtab S */
4466 add_block (struct block
*b
, struct symtab
*s
)
4468 struct blockvector
*bv
= BLOCKVECTOR (s
);
4470 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
4471 (sizeof (struct blockvector
)
4472 + BLOCKVECTOR_NBLOCKS (bv
)
4473 * sizeof (bv
->block
)));
4474 if (bv
!= BLOCKVECTOR (s
))
4475 BLOCKVECTOR (s
) = bv
;
4477 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4480 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4481 MIPS' linenumber encoding might need more than one byte
4482 to describe it, LAST is used to detect these continuation lines.
4484 Combining lines with the same line number seems like a bad idea.
4485 E.g: There could be a line number entry with the same line number after the
4486 prologue and GDB should not ignore it (this is a better way to find
4487 a prologue than mips_skip_prologue).
4488 But due to the compressed line table format there are line number entries
4489 for the same line which are needed to bridge the gap to the next
4490 line number entry. These entries have a bogus address info with them
4491 and we are unable to tell them from intended duplicate line number
4493 This is another reason why -ggdb debugging format is preferable. */
4496 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4498 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4499 Change them to something sensible. */
4503 last
= -2; /* make sure we record first line */
4505 if (last
== lineno
) /* skip continuation lines */
4508 lt
->item
[lt
->nitems
].line
= lineno
;
4509 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4513 /* Sorting and reordering procedures */
4515 /* Blocks with a smaller low bound should come first */
4518 compare_blocks (const PTR arg1
, const PTR arg2
)
4520 register int addr_diff
;
4521 struct block
**b1
= (struct block
**) arg1
;
4522 struct block
**b2
= (struct block
**) arg2
;
4524 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4526 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4530 /* Sort the blocks of a symtab S.
4531 Reorder the blocks in the blockvector by code-address,
4532 as required by some MI search routines */
4535 sort_blocks (struct symtab
*s
)
4537 struct blockvector
*bv
= BLOCKVECTOR (s
);
4539 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4542 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4543 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4544 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4545 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4549 * This is very unfortunate: normally all functions are compiled in
4550 * the order they are found, but if the file is compiled -O3 things
4551 * are very different. It would be nice to find a reliable test
4552 * to detect -O3 images in advance.
4554 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4555 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4556 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4557 sizeof (struct block
*),
4561 register CORE_ADDR high
= 0;
4562 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4564 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4565 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4566 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4567 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4570 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4571 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4573 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4574 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4575 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4576 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4580 /* Constructor/restructor/destructor procedures */
4582 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4583 MAXSYMS and linenumbers MAXLINES we'll put in it */
4585 static struct symtab
*
4586 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4588 struct symtab
*s
= allocate_symtab (name
, objfile
);
4590 LINETABLE (s
) = new_linetable (maxlines
);
4592 /* All symtabs must have at least two blocks */
4593 BLOCKVECTOR (s
) = new_bvect (2);
4594 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4595 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4596 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4597 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4599 s
->free_code
= free_linetable
;
4600 s
->debugformat
= obsavestring ("ECOFF", 5,
4601 &objfile
->symbol_obstack
);
4605 /* Allocate a new partial_symtab NAME */
4607 static struct partial_symtab
*
4608 new_psymtab (char *name
, struct objfile
*objfile
)
4610 struct partial_symtab
*psymtab
;
4612 psymtab
= allocate_psymtab (name
, objfile
);
4613 psymtab
->section_offsets
= objfile
->section_offsets
;
4615 /* Keep a backpointer to the file's symbols */
4617 psymtab
->read_symtab_private
= ((char *)
4618 obstack_alloc (&objfile
->psymbol_obstack
,
4619 sizeof (struct symloc
)));
4620 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4621 CUR_BFD (psymtab
) = cur_bfd
;
4622 DEBUG_SWAP (psymtab
) = debug_swap
;
4623 DEBUG_INFO (psymtab
) = debug_info
;
4624 PENDING_LIST (psymtab
) = pending_list
;
4626 /* The way to turn this into a symtab is to call... */
4627 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4632 /* Allocate a linetable array of the given SIZE. Since the struct
4633 already includes one item, we subtract one when calculating the
4634 proper size to allocate. */
4636 static struct linetable
*
4637 new_linetable (int size
)
4639 struct linetable
*l
;
4641 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4642 l
= (struct linetable
*) xmalloc (size
);
4647 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4648 I am not so sure about the 3.4 ones.
4650 Since the struct linetable already includes one item, we subtract one when
4651 calculating the proper size to allocate. */
4653 static struct linetable
*
4654 shrink_linetable (struct linetable
*lt
)
4657 return (struct linetable
*) xrealloc ((PTR
) lt
,
4658 (sizeof (struct linetable
)
4660 * sizeof (lt
->item
))));
4663 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4665 static struct blockvector
*
4666 new_bvect (int nblocks
)
4668 struct blockvector
*bv
;
4671 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4672 bv
= (struct blockvector
*) xzalloc (size
);
4674 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4679 /* Allocate and zero a new block of MAXSYMS symbols */
4681 static struct block
*
4682 new_block (int maxsyms
)
4684 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4686 return (struct block
*) xzalloc (size
);
4689 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4690 Shrink_block can also be used by add_symbol to grow a block. */
4692 static struct block
*
4693 shrink_block (struct block
*b
, struct symtab
*s
)
4696 struct blockvector
*bv
= BLOCKVECTOR (s
);
4699 /* Just reallocate it and fix references to the old one */
4701 new = (struct block
*) xrealloc ((PTR
) b
,
4702 (sizeof (struct block
)
4703 + ((BLOCK_NSYMS (b
) - 1)
4704 * sizeof (struct symbol
*))));
4706 /* Should chase pointers to old one. Fortunately, that`s just
4707 the block`s function and inferior blocks */
4708 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4709 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4710 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4711 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4712 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4713 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4714 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4718 /* Create a new symbol with printname NAME */
4720 static struct symbol
*
4721 new_symbol (char *name
)
4723 struct symbol
*s
= ((struct symbol
*)
4724 obstack_alloc (¤t_objfile
->symbol_obstack
,
4725 sizeof (struct symbol
)));
4727 memset ((PTR
) s
, 0, sizeof (*s
));
4728 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4729 ¤t_objfile
->symbol_obstack
);
4730 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4731 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4735 /* Create a new type with printname NAME */
4737 static struct type
*
4738 new_type (char *name
)
4742 t
= alloc_type (current_objfile
);
4743 TYPE_NAME (t
) = name
;
4744 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4748 /* Read ECOFF debugging information from a BFD section. This is
4749 called from elfread.c. It parses the section into a
4750 ecoff_debug_info struct, and then lets the rest of the file handle
4754 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4755 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4757 bfd
*abfd
= objfile
->obfd
;
4758 struct ecoff_debug_info
*info
;
4760 info
= ((struct ecoff_debug_info
*)
4761 obstack_alloc (&objfile
->psymbol_obstack
,
4762 sizeof (struct ecoff_debug_info
)));
4764 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4765 error ("Error reading ECOFF debugging information: %s",
4766 bfd_errmsg (bfd_get_error ()));
4768 mdebug_build_psymtabs (objfile
, swap
, info
);
4772 /* Things used for calling functions in the inferior.
4773 These functions are exported to our companion
4774 mips-tdep.c file and are here because they play
4775 with the symbol-table explicitly. */
4777 /* Sigtramp: make sure we have all the necessary information
4778 about the signal trampoline code. Since the official code
4779 from MIPS does not do so, we make up that information ourselves.
4780 If they fix the library (unlikely) this code will neutralize itself. */
4782 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4783 here because it calls functions defined in this file, but perhaps
4784 this could be handled in a better way. Only compile it in when
4785 tm-mips.h is included. */
4790 fixup_sigtramp (void)
4794 struct block
*b
, *b0
= NULL
;
4796 sigtramp_address
= -1;
4798 /* We have to handle the following cases here:
4799 a) The Mips library has a sigtramp label within sigvec.
4800 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4801 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4804 b0
= SYMBOL_BLOCK_VALUE (s
);
4805 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4809 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4810 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4813 /* But maybe this program uses its own version of sigvec */
4817 /* Did we or MIPSco fix the library ? */
4818 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4820 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4821 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4825 sigtramp_address
= SYMBOL_VALUE (s
);
4826 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4828 /* But what symtab does it live in ? */
4829 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4832 * Ok, there goes the fix: turn it into a procedure, with all the
4833 * needed info. Note we make it a nested procedure of sigvec,
4834 * which is the way the (assembly) code is actually written.
4836 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4837 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4838 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4840 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4842 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4844 SYMBOL_BLOCK_VALUE (s
) = b
;
4845 BLOCK_START (b
) = sigtramp_address
;
4846 BLOCK_END (b
) = sigtramp_end
;
4847 BLOCK_FUNCTION (b
) = s
;
4848 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4852 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4854 struct mips_extra_func_info
*e
=
4855 ((struct mips_extra_func_info
*)
4856 xzalloc (sizeof (struct mips_extra_func_info
)));
4858 e
->numargs
= 0; /* the kernel thinks otherwise */
4859 e
->pdr
.frameoffset
= 32;
4860 e
->pdr
.framereg
= SP_REGNUM
;
4861 /* Note that setting pcreg is no longer strictly necessary as
4862 mips_frame_saved_pc is now aware of signal handler frames. */
4863 e
->pdr
.pcreg
= PC_REGNUM
;
4864 e
->pdr
.regmask
= -2;
4865 /* Offset to saved r31, in the sigtramp case the saved registers
4866 are above the frame in the sigcontext.
4867 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4868 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4869 and 32 * 4 bytes for the floating point registers. */
4870 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4871 e
->pdr
.fregmask
= -1;
4872 /* Offset to saved f30 (first saved *double* register). */
4873 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4874 e
->pdr
.isym
= (long) s
;
4875 e
->pdr
.adr
= sigtramp_address
;
4877 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4878 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4879 SYMBOL_VALUE (s
) = (long) e
;
4880 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4881 SYMBOL_CLASS (s
) = LOC_CONST
;
4882 SYMBOL_TYPE (s
) = mdebug_type_void
;
4883 current_objfile
= NULL
;
4886 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4889 #endif /* TM_MIPS_H */
4892 _initialize_mdebugread (void)
4895 init_type (TYPE_CODE_VOID
, 1,
4897 "void", (struct objfile
*) NULL
);
4899 init_type (TYPE_CODE_INT
, 1,
4901 "char", (struct objfile
*) NULL
);
4902 mdebug_type_unsigned_char
=
4903 init_type (TYPE_CODE_INT
, 1,
4905 "unsigned char", (struct objfile
*) NULL
);
4907 init_type (TYPE_CODE_INT
, 2,
4909 "short", (struct objfile
*) NULL
);
4910 mdebug_type_unsigned_short
=
4911 init_type (TYPE_CODE_INT
, 2,
4913 "unsigned short", (struct objfile
*) NULL
);
4914 mdebug_type_int_32
=
4915 init_type (TYPE_CODE_INT
, 4,
4917 "int", (struct objfile
*) NULL
);
4918 mdebug_type_unsigned_int_32
=
4919 init_type (TYPE_CODE_INT
, 4,
4921 "unsigned int", (struct objfile
*) NULL
);
4922 mdebug_type_int_64
=
4923 init_type (TYPE_CODE_INT
, 8,
4925 "int", (struct objfile
*) NULL
);
4926 mdebug_type_unsigned_int_64
=
4927 init_type (TYPE_CODE_INT
, 8,
4929 "unsigned int", (struct objfile
*) NULL
);
4930 mdebug_type_long_32
=
4931 init_type (TYPE_CODE_INT
, 4,
4933 "long", (struct objfile
*) NULL
);
4934 mdebug_type_unsigned_long_32
=
4935 init_type (TYPE_CODE_INT
, 4,
4937 "unsigned long", (struct objfile
*) NULL
);
4938 mdebug_type_long_64
=
4939 init_type (TYPE_CODE_INT
, 8,
4941 "long", (struct objfile
*) NULL
);
4942 mdebug_type_unsigned_long_64
=
4943 init_type (TYPE_CODE_INT
, 8,
4945 "unsigned long", (struct objfile
*) NULL
);
4946 mdebug_type_long_long_64
=
4947 init_type (TYPE_CODE_INT
, 8,
4949 "long long", (struct objfile
*) NULL
);
4950 mdebug_type_unsigned_long_long_64
=
4951 init_type (TYPE_CODE_INT
, 8,
4953 "unsigned long long", (struct objfile
*) NULL
);
4954 mdebug_type_adr_32
=
4955 init_type (TYPE_CODE_PTR
, 4,
4957 "adr_32", (struct objfile
*) NULL
);
4958 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4959 mdebug_type_adr_64
=
4960 init_type (TYPE_CODE_PTR
, 8,
4962 "adr_64", (struct objfile
*) NULL
);
4963 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4965 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4967 "float", (struct objfile
*) NULL
);
4968 mdebug_type_double
=
4969 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4971 "double", (struct objfile
*) NULL
);
4972 mdebug_type_complex
=
4973 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4975 "complex", (struct objfile
*) NULL
);
4976 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4977 mdebug_type_double_complex
=
4978 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4980 "double complex", (struct objfile
*) NULL
);
4981 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4983 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4985 mdebug_type_string
=
4986 init_type (TYPE_CODE_STRING
,
4987 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4989 (struct objfile
*) NULL
);
4991 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4992 good? Would we be better off with TYPE_CODE_ERROR? Should
4993 TYPE_CODE_ERROR print things in hex if it knows the size? */
4994 mdebug_type_fixed_dec
=
4995 init_type (TYPE_CODE_INT
,
4996 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4998 (struct objfile
*) NULL
);
5000 mdebug_type_float_dec
=
5001 init_type (TYPE_CODE_ERROR
,
5002 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5003 0, "floating decimal",
5004 (struct objfile
*) NULL
);
5006 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5007 "<function, no debug info>", NULL
);
5008 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5009 nodebug_var_symbol_type
=
5010 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5011 "<variable, no debug info>", NULL
);