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)
147 #define SC_IS_SBSS(sc) ((sc) == scSBss)
148 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
150 /* Various complaints about symbol reading that don't abort the process */
152 static struct complaint bad_file_number_complaint
=
153 {"bad file number %d", 0, 0};
155 static struct complaint index_complaint
=
156 {"bad aux index at symbol %s", 0, 0};
158 static struct complaint aux_index_complaint
=
159 {"bad proc end in aux found from symbol %s", 0, 0};
161 static struct complaint block_index_complaint
=
162 {"bad aux index at block symbol %s", 0, 0};
164 static struct complaint unknown_ext_complaint
=
165 {"unknown external symbol %s", 0, 0};
167 static struct complaint unknown_sym_complaint
=
168 {"unknown local symbol %s", 0, 0};
170 static struct complaint unknown_st_complaint
=
171 {"with type %d", 0, 0};
173 static struct complaint block_overflow_complaint
=
174 {"block containing %s overfilled", 0, 0};
176 static struct complaint basic_type_complaint
=
177 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
179 static struct complaint unknown_type_qual_complaint
=
180 {"unknown type qualifier 0x%x", 0, 0};
182 static struct complaint array_index_type_complaint
=
183 {"illegal array index type for %s, assuming int", 0, 0};
185 static struct complaint bad_tag_guess_complaint
=
186 {"guessed tag type of %s incorrectly", 0, 0};
188 static struct complaint block_member_complaint
=
189 {"declaration block contains unhandled symbol type %d", 0, 0};
191 static struct complaint stEnd_complaint
=
192 {"stEnd with storage class %d not handled", 0, 0};
194 static struct complaint unknown_mdebug_symtype_complaint
=
195 {"unknown symbol type 0x%x", 0, 0};
197 static struct complaint stab_unknown_complaint
=
198 {"unknown stabs symbol %s", 0, 0};
200 static struct complaint pdr_for_nonsymbol_complaint
=
201 {"PDR for %s, but no symbol", 0, 0};
203 static struct complaint pdr_static_symbol_complaint
=
204 {"can't handle PDR for static proc at 0x%lx", 0, 0};
206 static struct complaint bad_setjmp_pdr_complaint
=
207 {"fixing bad setjmp PDR from libc", 0, 0};
209 static struct complaint bad_fbitfield_complaint
=
210 {"can't handle TIR fBitfield for %s", 0, 0};
212 static struct complaint bad_continued_complaint
=
213 {"illegal TIR continued for %s", 0, 0};
215 static struct complaint bad_rfd_entry_complaint
=
216 {"bad rfd entry for %s: file %d, index %d", 0, 0};
218 static struct complaint unexpected_type_code_complaint
=
219 {"unexpected type code for %s", 0, 0};
221 static struct complaint unable_to_cross_ref_complaint
=
222 {"unable to cross ref btTypedef for %s", 0, 0};
224 static struct complaint bad_indirect_xref_complaint
=
225 {"unable to cross ref btIndirect for %s", 0, 0};
227 static struct complaint illegal_forward_tq0_complaint
=
228 {"illegal tq0 in forward typedef for %s", 0, 0};
230 static struct complaint illegal_forward_bt_complaint
=
231 {"illegal bt %d in forward typedef for %s", 0, 0};
233 static struct complaint bad_linetable_guess_complaint
=
234 {"guessed size of linetable for %s incorrectly", 0, 0};
236 static struct complaint bad_ext_ifd_complaint
=
237 {"bad ifd for external symbol: %d (max %d)", 0, 0};
239 static struct complaint bad_ext_iss_complaint
=
240 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
242 /* Macros and extra defs */
244 /* Puns: hard to find whether -g was used and how */
246 #define MIN_GLEVEL GLEVEL_0
247 #define compare_glevel(a,b) \
248 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
249 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
251 /* Things that really are local to this module */
253 /* Remember what we deduced to be the source language of this psymtab. */
255 static enum language psymtab_language
= language_unknown
;
261 /* How to parse debugging information for CUR_BFD. */
263 static const struct ecoff_debug_swap
*debug_swap
;
265 /* Pointers to debugging information for CUR_BFD. */
267 static struct ecoff_debug_info
*debug_info
;
269 /* Pointer to current file decriptor record, and its index */
274 /* Index of current symbol */
278 /* Note how much "debuggable" this image is. We would like
279 to see at least one FDR with full symbols */
281 static int max_gdbinfo
;
282 static int max_glevel
;
284 /* When examining .o files, report on undefined symbols */
286 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
288 /* Pseudo symbol to use when putting stabs into the symbol table. */
290 static char stabs_symbol
[] = STABS_SYMBOL
;
292 /* Types corresponding to mdebug format bt* basic types. */
294 static struct type
*mdebug_type_void
;
295 static struct type
*mdebug_type_char
;
296 static struct type
*mdebug_type_short
;
297 static struct type
*mdebug_type_int_32
;
298 #define mdebug_type_int mdebug_type_int_32
299 static struct type
*mdebug_type_int_64
;
300 static struct type
*mdebug_type_long_32
;
301 static struct type
*mdebug_type_long_64
;
302 static struct type
*mdebug_type_long_long_64
;
303 static struct type
*mdebug_type_unsigned_char
;
304 static struct type
*mdebug_type_unsigned_short
;
305 static struct type
*mdebug_type_unsigned_int_32
;
306 static struct type
*mdebug_type_unsigned_int_64
;
307 static struct type
*mdebug_type_unsigned_long_32
;
308 static struct type
*mdebug_type_unsigned_long_64
;
309 static struct type
*mdebug_type_unsigned_long_long_64
;
310 static struct type
*mdebug_type_adr_32
;
311 static struct type
*mdebug_type_adr_64
;
312 static struct type
*mdebug_type_float
;
313 static struct type
*mdebug_type_double
;
314 static struct type
*mdebug_type_complex
;
315 static struct type
*mdebug_type_double_complex
;
316 static struct type
*mdebug_type_fixed_dec
;
317 static struct type
*mdebug_type_float_dec
;
318 static struct type
*mdebug_type_string
;
320 /* Types for symbols from files compiled without debugging info. */
322 static struct type
*nodebug_func_symbol_type
;
323 static struct type
*nodebug_var_symbol_type
;
325 /* Nonzero if we have seen ecoff debugging info for a file. */
327 static int found_ecoff_debugging_info
;
329 /* Forward declarations */
331 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
334 static void parse_partial_symbols (struct objfile
*);
336 static int has_opaque_xref (FDR
*, SYMR
*);
338 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
339 char **, int, char *);
341 static struct symbol
*new_symbol (char *);
343 static struct type
*new_type (char *);
345 static struct block
*new_block (int);
347 static struct symtab
*new_symtab (char *, int, int, struct objfile
*);
349 static struct linetable
*new_linetable (int);
351 static struct blockvector
*new_bvect (int);
353 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
356 static struct symbol
*mylookup_symbol (char *, struct block
*, namespace_enum
,
359 static struct block
*shrink_block (struct block
*, struct symtab
*);
361 static void sort_blocks (struct symtab
*);
363 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
365 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
367 static void add_block (struct block
*, struct symtab
*);
369 static void add_symbol (struct symbol
*, struct block
*);
371 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
373 static struct linetable
*shrink_linetable (struct linetable
*);
375 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
378 static char *mdebug_next_symbol_text (struct objfile
*);
380 /* Address bounds for the signal trampoline in inferior, if any */
382 CORE_ADDR sigtramp_address
, sigtramp_end
;
384 /* Allocate zeroed memory */
387 xzalloc (unsigned int size
)
389 void *p
= xmalloc (size
);
395 /* Exported procedure: Builds a symtab from the PST partial one.
396 Restores the environment in effect when PST was created, delegates
397 most of the work to an ancillary procedure, and sorts
398 and reorders the symtab list at the end */
401 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
409 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
410 gdb_flush (gdb_stdout
);
413 next_symbol_text_func
= mdebug_next_symbol_text
;
415 psymtab_to_symtab_1 (pst
, pst
->filename
);
417 /* Match with global symbols. This only needs to be done once,
418 after all of the symtabs and dependencies have been read in. */
419 scan_file_globals (pst
->objfile
);
422 printf_filtered ("done.\n");
425 /* File-level interface functions */
427 /* Find a file descriptor given its index RF relative to a file CF */
430 get_rfd (int cf
, int rf
)
436 fdrs
= debug_info
->fdr
;
438 /* Object files do not have the RFD table, all refs are absolute */
441 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
442 ((char *) debug_info
->external_rfd
444 * debug_swap
->external_rfd_size
)),
449 /* Return a safer print NAME for a file descriptor */
455 return "<stripped file>";
458 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
462 /* Read in and parse the symtab of the file OBJFILE. Symbols from
463 different sections are relocated via the SECTION_OFFSETS. */
466 mdebug_build_psymtabs (struct objfile
*objfile
,
467 const struct ecoff_debug_swap
*swap
,
468 struct ecoff_debug_info
*info
)
470 cur_bfd
= objfile
->obfd
;
474 stabsread_new_init ();
475 buildsym_new_init ();
476 free_header_files ();
477 init_header_files ();
479 /* Make sure all the FDR information is swapped in. */
480 if (info
->fdr
== (FDR
*) NULL
)
486 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
487 (info
->symbolic_header
.ifdMax
489 fdr_src
= info
->external_fdr
;
491 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
493 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
494 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
497 parse_partial_symbols (objfile
);
499 /* Take the text ranges the partial symbol scanner computed for each
500 of the psymtabs and convert it into the canonical form for
503 struct partial_symtab
*p
;
505 ALL_OBJFILE_PSYMTABS (objfile
, p
)
507 p
->textlow
= TEXTLOW (p
);
508 p
->texthigh
= TEXTHIGH (p
);
513 /* Check to make sure file was compiled with -g. If not, warn the
514 user of this limitation. */
515 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
517 if (max_gdbinfo
== 0)
518 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
520 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
521 gdb_flush (gdb_stdout
);
526 /* Local utilities */
528 /* Map of FDR indexes to partial symtabs */
532 struct partial_symtab
*pst
; /* the psymtab proper */
533 long n_globals
; /* exported globals (external symbols) */
534 long globals_offset
; /* cumulative */
538 /* Utility stack, used to nest procedures and blocks properly.
539 It is a doubly linked list, to avoid too many alloc/free.
540 Since we might need it quite a few times it is NOT deallocated
543 static struct parse_stack
545 struct parse_stack
*next
, *prev
;
546 struct symtab
*cur_st
; /* Current symtab. */
547 struct block
*cur_block
; /* Block in it. */
549 /* What are we parsing. stFile, or stBlock are for files and
550 blocks. stProc or stStaticProc means we have seen the start of a
551 procedure, but not the start of the block within in. When we see
552 the start of that block, we change it to stNil, without pushing a
553 new block, i.e. stNil means both a procedure and a block. */
557 int maxsyms
; /* Max symbols in this block. */
558 struct type
*cur_type
; /* Type we parse fields for. */
559 int cur_field
; /* Field number in cur_type. */
560 CORE_ADDR procadr
; /* Start addres of this procedure */
561 int numargs
; /* Its argument count */
564 *top_stack
; /* Top stack ptr */
567 /* Enter a new lexical context */
570 push_parse_stack (void)
572 struct parse_stack
*new;
574 /* Reuse frames if possible */
575 if (top_stack
&& top_stack
->prev
)
576 new = top_stack
->prev
;
578 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
579 /* Initialize new frame with previous content */
582 register struct parse_stack
*prev
= new->prev
;
585 top_stack
->prev
= new;
587 new->next
= top_stack
;
592 /* Exit a lexical context */
595 pop_parse_stack (void)
600 top_stack
= top_stack
->next
;
604 /* Cross-references might be to things we haven't looked at
605 yet, e.g. type references. To avoid too many type
606 duplications we keep a quick fixup table, an array
607 of lists of references indexed by file descriptor */
609 struct mdebug_pending
611 struct mdebug_pending
*next
; /* link */
612 char *s
; /* the unswapped symbol */
613 struct type
*t
; /* its partial type descriptor */
617 /* The pending information is kept for an entire object file, and used
618 to be in the sym_private field. I took it out when I split
619 mdebugread from mipsread, because this might not be the only type
620 of symbols read from an object file. Instead, we allocate the
621 pending information table when we create the partial symbols, and
622 we store a pointer to the single table in each psymtab. */
624 static struct mdebug_pending
**pending_list
;
626 /* Check whether we already saw symbol SH in file FH */
628 static struct mdebug_pending
*
629 is_pending_symbol (FDR
*fh
, char *sh
)
631 int f_idx
= fh
- debug_info
->fdr
;
632 register struct mdebug_pending
*p
;
634 /* Linear search is ok, list is typically no more than 10 deep */
635 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
641 /* Add a new symbol SH of type T */
644 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
646 int f_idx
= fh
- debug_info
->fdr
;
647 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
649 /* Make sure we do not make duplicates */
652 p
= ((struct mdebug_pending
*)
653 obstack_alloc (¤t_objfile
->psymbol_obstack
,
654 sizeof (struct mdebug_pending
)));
657 p
->next
= pending_list
[f_idx
];
658 pending_list
[f_idx
] = p
;
663 /* Parsing Routines proper. */
665 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
666 For blocks, procedures and types we open a new lexical context.
667 This is basically just a big switch on the symbol's type. Argument
668 AX is the base pointer of aux symbols for this file (fh->iauxBase).
669 EXT_SH points to the unswapped symbol, which is needed for struct,
670 union, etc., types; it is NULL for an EXTR. BIGEND says whether
671 aux symbols are big-endian or little-endian. Return count of
672 SYMR's handled (normally one). */
675 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
676 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
678 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
679 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
683 struct mdebug_pending
*pend
;
687 enum address_class
class;
689 long svalue
= sh
->value
;
692 if (ext_sh
== (char *) NULL
)
693 name
= debug_info
->ssext
+ sh
->iss
;
695 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
701 /* Do not relocate relative values.
702 The value of a stEnd symbol is the displacement from the
703 corresponding start symbol value.
704 The value of a stBlock symbol is the displacement from the
705 procedure address. */
706 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
707 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
714 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
718 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
727 case stGlobal
: /* external symbol, goes into global block */
729 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
731 s
= new_symbol (name
);
732 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
735 case stStatic
: /* static data, goes into current block. */
737 b
= top_stack
->cur_block
;
738 s
= new_symbol (name
);
739 if (SC_IS_COMMON (sh
->sc
))
741 /* It is a FORTRAN common block. At least for SGI Fortran the
742 address is not in the symbol; we need to fix it later in
743 scan_file_globals. */
744 int bucket
= hashname (SYMBOL_NAME (s
));
745 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
746 global_sym_chain
[bucket
] = s
;
749 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
752 case stLocal
: /* local variable, goes into current block */
753 if (sh
->sc
== scRegister
)
755 class = LOC_REGISTER
;
756 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
760 b
= top_stack
->cur_block
;
761 s
= new_symbol (name
);
762 SYMBOL_VALUE (s
) = svalue
;
764 data
: /* Common code for symbols describing data */
765 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
766 SYMBOL_CLASS (s
) = class;
769 /* Type could be missing if file is compiled without debugging info. */
770 if (SC_IS_UNDEF (sh
->sc
)
771 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
772 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
774 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
775 /* Value of a data symbol is its memory address */
778 case stParam
: /* arg to procedure, goes into current block */
780 found_ecoff_debugging_info
= 1;
781 top_stack
->numargs
++;
783 /* Special GNU C++ name. */
784 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
785 name
= "this"; /* FIXME, not alloc'd in obstack */
786 s
= new_symbol (name
);
788 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
792 /* Pass by value in register. */
793 SYMBOL_CLASS (s
) = LOC_REGPARM
;
794 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
797 /* Pass by reference on stack. */
798 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
801 /* Pass by reference in register. */
802 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
803 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
806 /* Pass by value on stack. */
807 SYMBOL_CLASS (s
) = LOC_ARG
;
810 SYMBOL_VALUE (s
) = svalue
;
811 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
812 add_symbol (s
, top_stack
->cur_block
);
815 case stLabel
: /* label, goes into current block */
816 s
= new_symbol (name
);
817 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
818 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
819 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
820 SYMBOL_TYPE (s
) = mdebug_type_int
;
821 add_symbol (s
, top_stack
->cur_block
);
824 case stProc
: /* Procedure, usually goes into global block */
825 case stStaticProc
: /* Static procedure, goes into current block */
826 s
= new_symbol (name
);
827 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
828 SYMBOL_CLASS (s
) = LOC_BLOCK
;
829 /* Type of the return value */
830 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
834 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
835 if (STREQ (name
, "malloc") && TYPE_CODE (t
) == TYPE_CODE_VOID
)
837 /* I don't know why, but, at least under Alpha GNU/Linux,
838 when linking against a malloc without debugging
839 symbols, its read as a function returning void---this
840 is bad because it means we cannot call functions with
841 string arguments interactively; i.e., "call
842 printf("howdy\n")" would fail with the error message
843 "program has no memory available". To avoid this, we
844 patch up the type and make it void*
845 instead. (davidm@azstarnet.com)
847 t
= make_pointer_type (t
, NULL
);
850 b
= top_stack
->cur_block
;
851 if (sh
->st
== stProc
)
853 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
854 /* The next test should normally be true, but provides a
855 hook for nested functions (which we don't want to make
857 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
858 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
859 /* Irix 5 sometimes has duplicate names for the same
860 function. We want to add such names up at the global
861 level, not as a nested function. */
862 else if (sh
->value
== top_stack
->procadr
)
863 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
867 /* Make a type for the procedure itself */
868 SYMBOL_TYPE (s
) = lookup_function_type (t
);
870 /* Create and enter a new lexical context */
871 b
= new_block (top_stack
->maxsyms
);
872 SYMBOL_BLOCK_VALUE (s
) = b
;
873 BLOCK_FUNCTION (b
) = s
;
874 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
875 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
876 add_block (b
, top_stack
->cur_st
);
878 /* Not if we only have partial info */
879 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
883 top_stack
->cur_block
= b
;
884 top_stack
->blocktype
= sh
->st
;
885 top_stack
->cur_type
= SYMBOL_TYPE (s
);
886 top_stack
->cur_field
= -1;
887 top_stack
->procadr
= sh
->value
;
888 top_stack
->numargs
= 0;
891 /* Beginning of code for structure, union, and enum definitions.
892 They all share a common set of local variables, defined here. */
894 enum type_code type_code
;
900 case stStruct
: /* Start a block defining a struct type */
901 type_code
= TYPE_CODE_STRUCT
;
902 goto structured_common
;
904 case stUnion
: /* Start a block defining a union type */
905 type_code
= TYPE_CODE_UNION
;
906 goto structured_common
;
908 case stEnum
: /* Start a block defining an enum type */
909 type_code
= TYPE_CODE_ENUM
;
910 goto structured_common
;
912 case stBlock
: /* Either a lexical block, or some type */
913 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
914 goto case_stBlock_code
; /* Lexical block */
916 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
918 /* Common code for handling struct, union, enum, and/or as-yet-
919 unknown-type blocks of info about structured data. `type_code'
920 has been set to the proper TYPE_CODE, if we know it. */
922 found_ecoff_debugging_info
= 1;
924 top_stack
->blocktype
= stBlock
;
926 /* First count the number of fields and the highest value. */
929 for (ext_tsym
= ext_sh
+ external_sym_size
;
931 ext_tsym
+= external_sym_size
)
935 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
943 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
945 /* If the type of the member is Nil (or Void),
946 without qualifiers, assume the tag is an
948 Alpha cc -migrate enums are recognized by a zero
949 index and a zero symbol value.
950 DU 4.0 cc enums are recognized by a member type of
951 btEnum without qualifiers and a zero symbol value. */
952 if (tsym
.index
== indexNil
953 || (tsym
.index
== 0 && sh
->value
== 0))
954 type_code
= TYPE_CODE_ENUM
;
957 (*debug_swap
->swap_tir_in
) (bigend
,
958 &ax
[tsym
.index
].a_ti
,
960 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
961 || (tir
.bt
== btEnum
&& sh
->value
== 0))
963 type_code
= TYPE_CODE_ENUM
;
967 if (tsym
.value
> max_value
)
968 max_value
= tsym
.value
;
977 /* This is a no-op; is it trying to tell us something
978 we should be checking? */
979 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
983 /* This is something like a struct within a
984 struct. Skip over the fields of the inner
985 struct. The -1 is because the for loop will
986 increment ext_tsym. */
987 ext_tsym
= ((char *) debug_info
->external_sym
988 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
989 * external_sym_size
));
995 /* mips cc puts out a typedef for struct x if it is not yet
996 defined when it encounters
997 struct y { struct x *xp; };
1002 /* Irix5 cc puts out a stIndirect for struct x if it is not
1003 yet defined when it encounters
1004 struct y { struct x *xp; };
1009 complain (&block_member_complaint
, tsym
.st
);
1014 /* In an stBlock, there is no way to distinguish structs,
1015 unions, and enums at this point. This is a bug in the
1016 original design (that has been fixed with the recent
1017 addition of the stStruct, stUnion, and stEnum symbol
1018 types.) The way you can tell is if/when you see a variable
1019 or field of that type. In that case the variable's type
1020 (in the AUX table) says if the type is struct, union, or
1021 enum, and points back to the stBlock here. So you can
1022 patch the tag kind up later - but only if there actually is
1023 a variable or field of that type.
1025 So until we know for sure, we will guess at this point.
1027 If the first member has index==indexNil or a void type,
1028 assume we have an enumeration.
1029 Otherwise, if there is more than one member, and all
1030 the members have offset 0, assume we have a union.
1031 Otherwise, assume we have a struct.
1033 The heuristic could guess wrong in the case of of an
1034 enumeration with no members or a union with one (or zero)
1035 members, or when all except the last field of a struct have
1036 width zero. These are uncommon and/or illegal situations,
1037 and in any case guessing wrong probably doesn't matter
1040 But if we later do find out we were wrong, we fixup the tag
1041 kind. Members of an enumeration must be handled
1042 differently from struct/union fields, and that is harder to
1043 patch up, but luckily we shouldn't need to. (If there are
1044 any enumeration members, we can tell for sure it's an enum
1047 if (type_code
== TYPE_CODE_UNDEF
)
1049 if (nfields
> 1 && max_value
== 0)
1050 type_code
= TYPE_CODE_UNION
;
1052 type_code
= TYPE_CODE_STRUCT
;
1055 /* Create a new type or use the pending type. */
1056 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1057 if (pend
== (struct mdebug_pending
*) NULL
)
1059 t
= new_type (NULL
);
1060 add_pending (cur_fdr
, ext_sh
, t
);
1065 /* Do not set the tag name if it is a compiler generated tag name
1066 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1067 Alpha cc puts out an sh->iss of zero for those. */
1068 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1069 TYPE_TAG_NAME (t
) = NULL
;
1071 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1074 TYPE_CODE (t
) = type_code
;
1075 TYPE_LENGTH (t
) = sh
->value
;
1076 TYPE_NFIELDS (t
) = nfields
;
1077 TYPE_FIELDS (t
) = f
= ((struct field
*)
1079 nfields
* sizeof (struct field
)));
1081 if (type_code
== TYPE_CODE_ENUM
)
1083 int unsigned_enum
= 1;
1085 /* This is a non-empty enum. */
1087 /* DEC c89 has the number of enumerators in the sh.value field,
1088 not the type length, so we have to compensate for that
1089 incompatibility quirk.
1090 This might do the wrong thing for an enum with one or two
1091 enumerators and gcc -gcoff -fshort-enums, but these cases
1092 are hopefully rare enough.
1093 Alpha cc -migrate has a sh.value field of zero, we adjust
1095 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1096 || TYPE_LENGTH (t
) == 0)
1097 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1098 for (ext_tsym
= ext_sh
+ external_sym_size
;
1100 ext_tsym
+= external_sym_size
)
1103 struct symbol
*enum_sym
;
1105 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1107 if (tsym
.st
!= stMember
)
1110 FIELD_BITPOS (*f
) = tsym
.value
;
1111 FIELD_TYPE (*f
) = t
;
1112 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1113 FIELD_BITSIZE (*f
) = 0;
1115 enum_sym
= ((struct symbol
*)
1116 obstack_alloc (¤t_objfile
->symbol_obstack
,
1117 sizeof (struct symbol
)));
1118 memset (enum_sym
, 0, sizeof (struct symbol
));
1119 SYMBOL_NAME (enum_sym
) =
1120 obsavestring (f
->name
, strlen (f
->name
),
1121 ¤t_objfile
->symbol_obstack
);
1122 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1123 SYMBOL_TYPE (enum_sym
) = t
;
1124 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1125 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1126 if (SYMBOL_VALUE (enum_sym
) < 0)
1128 add_symbol (enum_sym
, top_stack
->cur_block
);
1130 /* Skip the stMembers that we've handled. */
1135 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1137 /* make this the current type */
1138 top_stack
->cur_type
= t
;
1139 top_stack
->cur_field
= 0;
1141 /* Do not create a symbol for alpha cc unnamed structs. */
1145 /* gcc puts out an empty struct for an opaque struct definitions,
1146 do not create a symbol for it either. */
1147 if (TYPE_NFIELDS (t
) == 0)
1149 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1153 s
= new_symbol (name
);
1154 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1155 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1156 SYMBOL_VALUE (s
) = 0;
1157 SYMBOL_TYPE (s
) = t
;
1158 add_symbol (s
, top_stack
->cur_block
);
1161 /* End of local variables shared by struct, union, enum, and
1162 block (as yet unknown struct/union/enum) processing. */
1166 found_ecoff_debugging_info
= 1;
1167 /* beginnning of (code) block. Value of symbol
1168 is the displacement from procedure start */
1169 push_parse_stack ();
1171 /* Do not start a new block if this is the outermost block of a
1172 procedure. This allows the LOC_BLOCK symbol to point to the
1173 block with the local variables, so funcname::var works. */
1174 if (top_stack
->blocktype
== stProc
1175 || top_stack
->blocktype
== stStaticProc
)
1177 top_stack
->blocktype
= stNil
;
1181 top_stack
->blocktype
= stBlock
;
1182 b
= new_block (top_stack
->maxsyms
);
1183 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1184 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1185 top_stack
->cur_block
= b
;
1186 add_block (b
, top_stack
->cur_st
);
1189 case stEnd
: /* end (of anything) */
1190 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1192 /* Finished with type */
1193 top_stack
->cur_type
= 0;
1195 else if (sh
->sc
== scText
&&
1196 (top_stack
->blocktype
== stProc
||
1197 top_stack
->blocktype
== stStaticProc
))
1199 /* Finished with procedure */
1200 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1201 struct mips_extra_func_info
*e
;
1203 struct type
*ftype
= top_stack
->cur_type
;
1206 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1208 /* Make up special symbol to contain procedure specific info */
1209 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1210 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1211 SYMBOL_CLASS (s
) = LOC_CONST
;
1212 SYMBOL_TYPE (s
) = mdebug_type_void
;
1213 e
= ((struct mips_extra_func_info
*)
1214 obstack_alloc (¤t_objfile
->symbol_obstack
,
1215 sizeof (struct mips_extra_func_info
)));
1216 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1217 SYMBOL_VALUE (s
) = (long) e
;
1218 e
->numargs
= top_stack
->numargs
;
1219 e
->pdr
.framereg
= -1;
1220 add_symbol (s
, top_stack
->cur_block
);
1222 /* Reallocate symbols, saving memory */
1223 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1225 /* f77 emits proc-level with address bounds==[0,0],
1226 So look for such child blocks, and patch them. */
1227 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1229 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1230 if (BLOCK_SUPERBLOCK (b_bad
) == b
1231 && BLOCK_START (b_bad
) == top_stack
->procadr
1232 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1234 BLOCK_START (b_bad
) = BLOCK_START (b
);
1235 BLOCK_END (b_bad
) = BLOCK_END (b
);
1239 if (TYPE_NFIELDS (ftype
) <= 0)
1241 /* No parameter type information is recorded with the function's
1242 type. Set that from the type of the parameter symbols. */
1243 int nparams
= top_stack
->numargs
;
1249 TYPE_NFIELDS (ftype
) = nparams
;
1250 TYPE_FIELDS (ftype
) = (struct field
*)
1251 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1253 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1255 sym
= BLOCK_SYM (b
, i
);
1256 switch (SYMBOL_CLASS (sym
))
1261 case LOC_REGPARM_ADDR
:
1262 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1263 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1273 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1275 /* End of (code) block. The value of the symbol is the
1276 displacement from the procedure`s start address of the
1277 end of this block. */
1278 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1279 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1281 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1283 /* End of outermost block. Pop parse stack and ignore. The
1284 following stEnd of stProc will take care of the block. */
1287 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1289 /* End of file. Pop parse stack and ignore. Higher
1290 level code deals with this. */
1294 complain (&stEnd_complaint
, sh
->sc
);
1296 pop_parse_stack (); /* restore previous lexical context */
1299 case stMember
: /* member of struct or union */
1300 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1301 FIELD_NAME (*f
) = name
;
1302 FIELD_BITPOS (*f
) = sh
->value
;
1304 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1305 FIELD_BITSIZE (*f
) = bitsize
;
1308 case stIndirect
: /* forward declaration on Irix5 */
1309 /* Forward declarations from Irix5 cc are handled by cross_ref,
1313 case stTypedef
: /* type definition */
1314 found_ecoff_debugging_info
= 1;
1316 /* Typedefs for forward declarations and opaque structs from alpha cc
1317 are handled by cross_ref, skip them. */
1321 /* Parse the type or use the pending type. */
1322 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1323 if (pend
== (struct mdebug_pending
*) NULL
)
1325 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1326 add_pending (cur_fdr
, ext_sh
, t
);
1331 /* mips cc puts out a typedef with the name of the struct for forward
1332 declarations. These should not go into the symbol table and
1333 TYPE_NAME should not be set for them.
1334 They can't be distinguished from an intentional typedef to
1335 the same name however:
1337 struct x { int ix; int jx; };
1341 struct xx {int ixx; int jxx; };
1342 generates a cross referencing stTypedef for x and xx.
1343 The user visible effect of this is that the type of a pointer
1344 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1345 The problem is fixed with alpha cc and Irix5 cc. */
1347 /* However if the typedef cross references to an opaque aggregate, it
1348 is safe to omit it from the symbol table. */
1350 if (has_opaque_xref (cur_fdr
, sh
))
1352 s
= new_symbol (name
);
1353 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1354 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1355 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1356 SYMBOL_TYPE (s
) = t
;
1357 add_symbol (s
, top_stack
->cur_block
);
1359 /* Incomplete definitions of structs should not get a name. */
1360 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1361 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1362 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1363 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1365 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1366 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1368 /* If we are giving a name to a type such as "pointer to
1369 foo" or "function returning foo", we better not set
1370 the TYPE_NAME. If the program contains "typedef char
1371 *caddr_t;", we don't want all variables of type char
1372 * to print as caddr_t. This is not just a
1373 consequence of GDB's type management; CC and GCC (at
1374 least through version 2.4) both output variables of
1375 either type char * or caddr_t with the type
1376 refering to the stTypedef symbol for caddr_t. If a future
1377 compiler cleans this up it GDB is not ready for it
1378 yet, but if it becomes ready we somehow need to
1379 disable this check (without breaking the PCC/GCC2.4
1384 Fortunately, this check seems not to be necessary
1385 for anything except pointers or functions. */
1388 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1392 case stFile
: /* file name */
1393 push_parse_stack ();
1394 top_stack
->blocktype
= sh
->st
;
1397 /* I`ve never seen these for C */
1399 break; /* register relocation */
1401 break; /* forwarding address */
1403 break; /* constant */
1405 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1412 /* Parse the type information provided in the raw AX entries for
1413 the symbol SH. Return the bitfield size in BS, in case.
1414 We must byte-swap the AX entries before we use them; BIGEND says whether
1415 they are big-endian or little-endian (from fh->fBigendian). */
1417 static struct type
*
1418 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1419 int bigend
, char *sym_name
)
1421 /* Null entries in this map are treated specially */
1422 static struct type
**map_bt
[] =
1424 &mdebug_type_void
, /* btNil */
1425 &mdebug_type_adr_32
, /* btAdr */
1426 &mdebug_type_char
, /* btChar */
1427 &mdebug_type_unsigned_char
, /* btUChar */
1428 &mdebug_type_short
, /* btShort */
1429 &mdebug_type_unsigned_short
, /* btUShort */
1430 &mdebug_type_int_32
, /* btInt */
1431 &mdebug_type_unsigned_int_32
, /* btUInt */
1432 &mdebug_type_long_32
, /* btLong */
1433 &mdebug_type_unsigned_long_32
, /* btULong */
1434 &mdebug_type_float
, /* btFloat */
1435 &mdebug_type_double
, /* btDouble */
1442 &mdebug_type_complex
, /* btComplex */
1443 &mdebug_type_double_complex
, /* btDComplex */
1445 &mdebug_type_fixed_dec
, /* btFixedDec */
1446 &mdebug_type_float_dec
, /* btFloatDec */
1447 &mdebug_type_string
, /* btString */
1450 &mdebug_type_void
, /* btVoid */
1451 0, /* DEC C++: Pointer to member */
1452 0, /* DEC C++: Virtual function table */
1453 0, /* DEC C++: Class (Record) */
1454 &mdebug_type_long_64
, /* btLong64 */
1455 &mdebug_type_unsigned_long_64
, /* btULong64 */
1456 &mdebug_type_long_long_64
, /* btLongLong64 */
1457 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1458 &mdebug_type_adr_64
, /* btAdr64 */
1459 &mdebug_type_int_64
, /* btInt64 */
1460 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1464 struct type
*tp
= 0;
1465 enum type_code type_code
= TYPE_CODE_UNDEF
;
1467 /* Handle undefined types, they have indexNil. */
1468 if (aux_index
== indexNil
)
1469 return mdebug_type_int
;
1471 /* Handle corrupt aux indices. */
1472 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1474 complain (&index_complaint
, sym_name
);
1475 return mdebug_type_int
;
1479 /* Use aux as a type information record, map its basic type. */
1480 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1481 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1483 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1484 return mdebug_type_int
;
1488 tp
= *map_bt
[t
->bt
];
1493 /* Cannot use builtin types -- build our own */
1497 type_code
= TYPE_CODE_STRUCT
;
1500 type_code
= TYPE_CODE_UNION
;
1503 type_code
= TYPE_CODE_ENUM
;
1506 type_code
= TYPE_CODE_RANGE
;
1509 type_code
= TYPE_CODE_SET
;
1512 /* alpha cc -migrate uses this for typedefs. The true type will
1513 be obtained by crossreferencing below. */
1514 type_code
= TYPE_CODE_ERROR
;
1517 /* alpha cc uses this for typedefs. The true type will be
1518 obtained by crossreferencing below. */
1519 type_code
= TYPE_CODE_ERROR
;
1522 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1523 return mdebug_type_int
;
1527 /* Move on to next aux */
1532 int width
= AUX_GET_WIDTH (bigend
, ax
);
1534 /* Inhibit core dumps with some cfront generated objects that
1536 if (bs
== (int *) NULL
)
1538 /* Alpha cc -migrate encodes char and unsigned char types
1539 as short and unsigned short types with a field width of 8.
1540 Enum types also have a field width which we ignore for now. */
1541 if (t
->bt
== btShort
&& width
== 8)
1542 tp
= mdebug_type_char
;
1543 else if (t
->bt
== btUShort
&& width
== 8)
1544 tp
= mdebug_type_unsigned_char
;
1545 else if (t
->bt
== btEnum
)
1548 complain (&bad_fbitfield_complaint
, sym_name
);
1555 /* A btIndirect entry cross references to an aux entry containing
1557 if (t
->bt
== btIndirect
)
1564 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1566 if (rn
->rfd
== 0xfff)
1568 rf
= AUX_GET_ISYM (bigend
, ax
);
1576 complain (&bad_indirect_xref_complaint
, sym_name
);
1577 return mdebug_type_int
;
1579 xref_fh
= get_rfd (fd
, rf
);
1580 xref_fd
= xref_fh
- debug_info
->fdr
;
1581 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1582 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1585 /* All these types really point to some (common) MIPS type
1586 definition, and only the type-qualifiers fully identify
1587 them. We'll make the same effort at sharing. */
1588 if (t
->bt
== btStruct
||
1592 /* btSet (I think) implies that the name is a tag name, not a typedef
1593 name. This apparently is a MIPS extension for C sets. */
1598 /* Try to cross reference this type, build new type on failure. */
1599 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1600 if (tp
== (struct type
*) NULL
)
1601 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1603 /* DEC c89 produces cross references to qualified aggregate types,
1604 dereference them. */
1605 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1606 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1607 tp
= TYPE_TARGET_TYPE (tp
);
1609 /* Make sure that TYPE_CODE(tp) has an expected type code.
1610 Any type may be returned from cross_ref if file indirect entries
1612 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1613 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1614 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1616 complain (&unexpected_type_code_complaint
, sym_name
);
1621 /* Usually, TYPE_CODE(tp) is already type_code. The main
1622 exception is if we guessed wrong re struct/union/enum.
1623 But for struct vs. union a wrong guess is harmless, so
1624 don't complain(). */
1625 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1626 && type_code
!= TYPE_CODE_ENUM
)
1627 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1628 && type_code
== TYPE_CODE_ENUM
))
1630 complain (&bad_tag_guess_complaint
, sym_name
);
1633 if (TYPE_CODE (tp
) != type_code
)
1635 TYPE_CODE (tp
) = type_code
;
1638 /* Do not set the tag name if it is a compiler generated tag name
1639 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1640 if (name
[0] == '.' || name
[0] == '\0')
1641 TYPE_TAG_NAME (tp
) = NULL
;
1642 else if (TYPE_TAG_NAME (tp
) == NULL
1643 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1644 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1645 ¤t_objfile
->type_obstack
);
1649 /* All these types really point to some (common) MIPS type
1650 definition, and only the type-qualifiers fully identify
1651 them. We'll make the same effort at sharing.
1652 FIXME: We are not doing any guessing on range types. */
1653 if (t
->bt
== btRange
)
1657 /* Try to cross reference this type, build new type on failure. */
1658 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1659 if (tp
== (struct type
*) NULL
)
1660 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1662 /* Make sure that TYPE_CODE(tp) has an expected type code.
1663 Any type may be returned from cross_ref if file indirect entries
1665 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1667 complain (&unexpected_type_code_complaint
, sym_name
);
1671 /* Usually, TYPE_CODE(tp) is already type_code. The main
1672 exception is if we guessed wrong re struct/union/enum. */
1673 if (TYPE_CODE (tp
) != type_code
)
1675 complain (&bad_tag_guess_complaint
, sym_name
);
1676 TYPE_CODE (tp
) = type_code
;
1678 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1679 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1680 ¤t_objfile
->type_obstack
);
1683 if (t
->bt
== btTypedef
)
1687 /* Try to cross reference this type, it should succeed. */
1688 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1689 if (tp
== (struct type
*) NULL
)
1691 complain (&unable_to_cross_ref_complaint
, sym_name
);
1692 tp
= mdebug_type_int
;
1696 /* Deal with range types */
1697 if (t
->bt
== btRange
)
1699 TYPE_NFIELDS (tp
) = 2;
1700 TYPE_FIELDS (tp
) = ((struct field
*)
1701 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1702 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1703 ¤t_objfile
->type_obstack
);
1704 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1706 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1707 ¤t_objfile
->type_obstack
);
1708 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1712 /* Parse all the type qualifiers now. If there are more
1713 than 6 the game will continue in the next aux */
1717 #define PARSE_TQ(tq) \
1718 if (t->tq != tqNil) \
1719 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1731 /* mips cc 2.x and gcc never put out continued aux entries. */
1735 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1739 /* Complain for illegal continuations due to corrupt aux entries. */
1741 complain (&bad_continued_complaint
, sym_name
);
1746 /* Make up a complex type from a basic one. Type is passed by
1747 reference in TPP and side-effected as necessary. The type
1748 qualifier TQ says how to handle the aux symbols at AX for
1749 the symbol SX we are currently analyzing. BIGEND says whether
1750 aux symbols are big-endian or little-endian.
1751 Returns the number of aux symbols we parsed. */
1754 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1760 /* Used in array processing */
1771 t
= lookup_pointer_type (*tpp
);
1776 t
= lookup_function_type (*tpp
);
1783 /* Determine and record the domain type (type of index) */
1784 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1790 rf
= AUX_GET_ISYM (bigend
, ax
);
1793 fh
= get_rfd (fd
, rf
);
1795 indx
= parse_type (fh
- debug_info
->fdr
,
1796 debug_info
->external_aux
+ fh
->iauxBase
,
1797 id
, (int *) NULL
, bigend
, sym_name
);
1799 /* The bounds type should be an integer type, but might be anything
1800 else due to corrupt aux entries. */
1801 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1803 complain (&array_index_type_complaint
, sym_name
);
1804 indx
= mdebug_type_int
;
1807 /* Get the bounds, and create the array type. */
1809 lower
= AUX_GET_DNLOW (bigend
, ax
);
1811 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1813 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1815 range
= create_range_type ((struct type
*) NULL
, indx
,
1818 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1820 /* We used to fill in the supplied array element bitsize
1821 here if the TYPE_LENGTH of the target type was zero.
1822 This happens for a `pointer to an array of anonymous structs',
1823 but in this case the array element bitsize is also zero,
1824 so nothing is gained.
1825 And we used to check the TYPE_LENGTH of the target type against
1826 the supplied array element bitsize.
1827 gcc causes a mismatch for `pointer to array of object',
1828 since the sdb directives it uses do not have a way of
1829 specifying the bitsize, but it does no harm (the
1830 TYPE_LENGTH should be correct) and we should be able to
1831 ignore the erroneous bitsize from the auxiliary entry safely.
1832 dbx seems to ignore it too. */
1834 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1836 if (TYPE_LENGTH (*tpp
) == 0)
1838 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1845 /* Volatile -- currently ignored */
1849 /* Const -- currently ignored */
1853 complain (&unknown_type_qual_complaint
, tq
);
1859 /* Parse a procedure descriptor record PR. Note that the procedure is
1860 parsed _after_ the local symbols, now we just insert the extra
1861 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1862 already been placed in the procedure's main block. Note also that
1863 images that have been partially stripped (ld -x) have been deprived
1864 of local symbols, and we have to cope with them here. FIRST_OFF is
1865 the offset of the first procedure for this FDR; we adjust the
1866 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1867 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1868 in question, or NULL to use top_stack->cur_block. */
1870 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1873 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1874 struct partial_symtab
*pst
)
1876 struct symbol
*s
, *i
;
1878 struct mips_extra_func_info
*e
;
1881 /* Simple rule to find files linked "-x" */
1882 if (cur_fdr
->rss
== -1)
1886 /* Static procedure at address pr->adr. Sigh. */
1887 /* FIXME-32x64. assuming pr->adr fits in long. */
1888 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1896 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1897 ((char *) debug_info
->external_ext
1899 * debug_swap
->external_ext_size
)),
1901 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1909 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1910 ((char *) debug_info
->external_sym
1911 + ((cur_fdr
->isymBase
+ pr
->isym
)
1912 * debug_swap
->external_sym_size
)),
1914 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1917 if (search_symtab
!= NULL
)
1920 /* This loses both in the case mentioned (want a static, find a global),
1921 but also if we are looking up a non-mangled name which happens to
1922 match the name of a mangled function. */
1923 /* We have to save the cur_fdr across the call to lookup_symbol.
1924 If the pdr is for a static function and if a global function with
1925 the same name exists, lookup_symbol will eventually read in the symtab
1926 for the global function and clobber cur_fdr. */
1927 FDR
*save_cur_fdr
= cur_fdr
;
1928 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1929 cur_fdr
= save_cur_fdr
;
1933 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1939 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1940 VAR_NAMESPACE
, LOC_BLOCK
);
1944 b
= SYMBOL_BLOCK_VALUE (s
);
1948 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1952 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1953 s
= new_symbol (sh_name
);
1954 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1955 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1956 /* Donno its type, hope int is ok */
1957 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1958 add_symbol (s
, top_stack
->cur_block
);
1959 /* Wont have symbols for this one */
1961 SYMBOL_BLOCK_VALUE (s
) = b
;
1962 BLOCK_FUNCTION (b
) = s
;
1963 BLOCK_START (b
) = pr
->adr
;
1964 /* BOUND used to be the end of procedure's text, but the
1965 argument is no longer passed in. */
1966 BLOCK_END (b
) = bound
;
1967 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1968 add_block (b
, top_stack
->cur_st
);
1972 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1976 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1978 e
->pdr
.isym
= (long) s
;
1980 /* GDB expects the absolute function start address for the
1981 procedure descriptor in e->pdr.adr.
1982 As the address in the procedure descriptor is usually relative,
1983 we would have to relocate e->pdr.adr with cur_fdr->adr and
1984 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1985 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1986 in shared libraries on some systems, and on other systems
1987 e->pdr.adr is sometimes offset by a bogus value.
1988 To work around these problems, we replace e->pdr.adr with
1989 the start address of the function. */
1990 e
->pdr
.adr
= BLOCK_START (b
);
1992 /* Correct incorrect setjmp procedure descriptor from the library
1993 to make backtrace through setjmp work. */
1994 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1996 complain (&bad_setjmp_pdr_complaint
, 0);
1997 e
->pdr
.pcreg
= RA_REGNUM
;
1998 e
->pdr
.regmask
= 0x80000000;
1999 e
->pdr
.regoffset
= -4;
2003 /* It would be reasonable that functions that have been compiled
2004 without debugging info have a btNil type for their return value,
2005 and functions that are void and are compiled with debugging info
2007 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2008 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2010 The glevel field in cur_fdr could be used to determine the presence
2011 of debugging info, but GCC doesn't always pass the -g switch settings
2012 to the assembler and GAS doesn't set the glevel field from the -g switch
2014 To work around these problems, the return value type of a TYPE_CODE_VOID
2015 function is adjusted accordingly if no debugging info was found in the
2016 compilation unit. */
2018 if (processing_gcc_compilation
== 0
2019 && found_ecoff_debugging_info
== 0
2020 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2021 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2024 /* Relocate the extra function info pointed to by the symbol table. */
2027 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2029 struct mips_extra_func_info
*e
;
2031 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2033 e
->pdr
.adr
+= delta
;
2036 /* Parse the external symbol ES. Just call parse_symbol() after
2037 making sure we know where the aux are for it.
2038 BIGEND says whether aux entries are big-endian or little-endian.
2040 This routine clobbers top_stack->cur_block and ->cur_st. */
2042 static void parse_external (EXTR
*, int, struct section_offsets
*,
2046 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2047 struct objfile
*objfile
)
2051 if (es
->ifd
!= ifdNil
)
2054 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2055 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2059 cur_fdr
= debug_info
->fdr
;
2063 /* Reading .o files */
2064 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2067 switch (es
->asym
.st
)
2070 /* These are generated for static symbols in .o files,
2091 /* FIXME: Turn this into a complaint? */
2093 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2094 what
, debug_info
->ssext
+ es
->asym
.iss
,
2095 fdr_name (cur_fdr
));
2099 switch (es
->asym
.st
)
2103 /* There is no need to parse the external procedure symbols.
2104 If they are from objects compiled without -g, their index will
2105 be indexNil, and the symbol definition from the minimal symbol
2106 is preferrable (yielding a function returning int instead of int).
2107 If the index points to a local procedure symbol, the local
2108 symbol already provides the correct type.
2109 Note that the index of the external procedure symbol points
2110 to the local procedure symbol in the local symbol table, and
2111 _not_ to the auxiliary symbol info. */
2115 /* Global common symbols are resolved by the runtime loader,
2117 if (SC_IS_COMMON (es
->asym
.sc
))
2120 /* Note that the case of a symbol with indexNil must be handled
2121 anyways by parse_symbol(). */
2122 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2129 /* Parse the line number info for file descriptor FH into
2130 GDB's linetable LT. MIPS' encoding requires a little bit
2131 of magic to get things out. Note also that MIPS' line
2132 numbers can go back and forth, apparently we can live
2133 with that and do not need to reorder our linetables */
2135 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2136 struct partial_symtab
*, CORE_ADDR
);
2139 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2140 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2142 unsigned char *base
;
2144 int delta
, count
, lineno
= 0;
2146 if (fh
->cbLine
== 0)
2149 /* Scan by procedure descriptors */
2151 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2155 unsigned char *halt
;
2157 /* No code for this one */
2158 if (pr
->iline
== ilineNil
||
2159 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2162 /* Determine start and end address of compressed line bytes for
2164 base
= debug_info
->line
+ fh
->cbLineOffset
;
2165 if (j
!= (fh
->cpd
- 1))
2166 halt
= base
+ pr
[1].cbLineOffset
;
2168 halt
= base
+ fh
->cbLine
;
2169 base
+= pr
->cbLineOffset
;
2171 adr
= TEXTLOW (pst
) + pr
->adr
- lowest_pdr_addr
;
2173 l
= adr
>> 2; /* in words */
2174 for (lineno
= pr
->lnLow
; base
< halt
;)
2176 count
= *base
& 0x0f;
2177 delta
= *base
++ >> 4;
2182 delta
= (base
[0] << 8) | base
[1];
2183 if (delta
>= 0x8000)
2187 lineno
+= delta
; /* first delta is 0 */
2189 /* Complain if the line table overflows. Could happen
2190 with corrupt binaries. */
2191 if (lt
->nitems
>= maxlines
)
2193 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2196 k
= add_line (lt
, lineno
, l
, k
);
2202 /* Master parsing procedure for first-pass reading of file symbols
2203 into a partial_symtab. */
2206 parse_partial_symbols (struct objfile
*objfile
)
2208 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2209 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2210 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2211 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2212 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2213 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2215 HDRR
*hdr
= &debug_info
->symbolic_header
;
2216 /* Running pointers */
2221 register EXTR
*ext_in
;
2224 struct partial_symtab
*pst
;
2225 int textlow_not_set
= 1;
2226 int past_first_source_file
= 0;
2228 /* List of current psymtab's include files */
2229 char **psymtab_include_list
;
2230 int includes_allocated
;
2233 struct pst_map
*fdr_to_pst
;
2234 /* Index within current psymtab dependency list */
2235 struct partial_symtab
**dependency_list
;
2236 int dependencies_used
, dependencies_allocated
;
2237 struct cleanup
*old_chain
;
2239 enum language prev_language
;
2240 asection
*text_sect
;
2241 int relocatable
= 0;
2243 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2244 the shared libraries are prelinked at a high memory address.
2245 We have to adjust the start address of the object file for this case,
2246 by setting it to the start address of the first procedure in the file.
2247 But we should do no adjustments if we are debugging a .o file, where
2248 the text section (and fh->adr) really starts at zero. */
2249 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2250 if (text_sect
!= NULL
2251 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2254 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2255 sizeof (EXTR
) * hdr
->iextMax
);
2257 includes_allocated
= 30;
2259 psymtab_include_list
= (char **) alloca (includes_allocated
*
2261 next_symbol_text_func
= mdebug_next_symbol_text
;
2263 dependencies_allocated
= 30;
2264 dependencies_used
= 0;
2266 (struct partial_symtab
**) alloca (dependencies_allocated
*
2267 sizeof (struct partial_symtab
*));
2269 last_source_file
= NULL
;
2274 * Only parse the Local and External symbols, and the Relative FDR.
2275 * Fixup enough of the loader symtab to be able to use it.
2276 * Allocate space only for the file's portions we need to
2281 max_glevel
= MIN_GLEVEL
;
2283 /* Allocate the map FDR -> PST.
2284 Minor hack: -O3 images might claim some global data belongs
2285 to FDR -1. We`ll go along with that */
2286 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2287 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2290 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2291 fdr_to_pst
[-1].pst
= pst
;
2295 /* Allocate the global pending list. */
2297 ((struct mdebug_pending
**)
2298 obstack_alloc (&objfile
->psymbol_obstack
,
2299 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2300 memset (pending_list
, 0,
2301 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2303 /* Pass 0 over external syms: swap them in. */
2304 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2305 make_cleanup (xfree
, ext_block
);
2307 ext_out
= (char *) debug_info
->external_ext
;
2308 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2310 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2311 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2313 /* Pass 1 over external syms: Presize and partition the list */
2315 ext_in_end
= ext_in
+ hdr
->iextMax
;
2316 for (; ext_in
< ext_in_end
; ext_in
++)
2318 /* See calls to complain below. */
2319 if (ext_in
->ifd
>= -1
2320 && ext_in
->ifd
< hdr
->ifdMax
2321 && ext_in
->asym
.iss
>= 0
2322 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2323 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2326 /* Pass 1.5 over files: partition out global symbol space */
2328 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2330 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2331 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2332 fdr_to_pst
[f_idx
].n_globals
= 0;
2337 For ECOFF in ELF, we skip the creation of the minimal symbols.
2338 The ECOFF symbols should be a subset of the Elf symbols, and the
2339 section information of the elf symbols will be more accurate.
2340 FIXME! What about Irix 5's native linker?
2342 By default, Elf sections which don't exist in ECOFF
2343 get put in ECOFF's absolute section by the gnu linker.
2344 Since absolute sections don't get relocated, we
2345 end up calculating an address different from that of
2346 the symbol's minimal symbol (created earlier from the
2349 To fix this, either :
2350 1) don't create the duplicate symbol
2351 (assumes ECOFF symtab is a subset of the ELF symtab;
2352 assumes no side-effects result from ignoring ECOFF symbol)
2353 2) create it, only if lookup for existing symbol in ELF's minimal
2356 assumes no side-effects result from ignoring ECOFF symbol)
2357 3) create it, but lookup ELF's minimal symbol and use it's section
2358 during relocation, then modify "uniqify" phase to merge and
2359 eliminate the duplicate symbol
2360 (highly inefficient)
2362 I've implemented #1 here...
2363 Skip the creation of the minimal symbols based on the ECOFF
2366 /* Pass 2 over external syms: fill in external symbols */
2368 ext_in_end
= ext_in
+ hdr
->iextMax
;
2369 for (; ext_in
< ext_in_end
; ext_in
++)
2371 enum minimal_symbol_type ms_type
= mst_text
;
2372 CORE_ADDR svalue
= ext_in
->asym
.value
;
2374 /* The Irix 5 native tools seem to sometimes generate bogus
2375 external symbols. */
2376 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2378 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2381 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2383 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2388 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2389 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2392 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2396 /* Pass 3 over files, over local syms: fill in static symbols */
2397 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2399 /* Process ECOFF Symbol Types and Storage Classes */
2400 switch (ext_in
->asym
.st
)
2403 /* Beginnning of Procedure */
2404 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2407 /* Load time only static procs */
2408 ms_type
= mst_file_text
;
2409 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2412 /* External symbol */
2413 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2415 /* The value of a common symbol is its size, not its address.
2419 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2422 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2424 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2427 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2429 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2432 svalue
+= ANOFFSET (objfile
->section_offsets
,
2433 get_section_index (objfile
, ".sbss"));
2441 /* On certain platforms, some extra label symbols can be
2442 generated by the linker. One possible usage for this kind
2443 of symbols is to represent the address of the begining of a
2444 given section. For instance, on Tru64 5.1, the address of
2445 the _ftext label is the start address of the .text section.
2447 The storage class of these symbols is usually directly
2448 related to the section to which the symbol refers. For
2449 instance, on Tru64 5.1, the storage class for the _fdata
2450 label is scData, refering to the .data section.
2452 It is actually possible that the section associated to the
2453 storage class of the label does not exist. On True64 5.1
2454 for instance, the libm.so shared library does not contain
2455 any .data section, although it contains a _fpdata label
2456 which storage class is scData... Since these symbols are
2457 usually useless for the debugger user anyway, we just
2458 discard these symbols.
2461 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2463 if (objfile
->sect_index_text
== -1)
2466 ms_type
= mst_file_text
;
2467 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2469 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2471 if (objfile
->sect_index_data
== -1)
2474 ms_type
= mst_file_data
;
2475 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2477 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2479 if (objfile
->sect_index_bss
== -1)
2482 ms_type
= mst_file_bss
;
2483 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2485 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2487 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2489 if (sbss_sect_index
== -1)
2492 ms_type
= mst_file_bss
;
2493 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2500 /* The alpha has the section start addresses in stLocal symbols
2501 whose name starts with a `.'. Skip those but complain for all
2502 other stLocal symbols.
2503 Irix6 puts the section start addresses in stNil symbols, skip
2509 ms_type
= mst_unknown
;
2510 complain (&unknown_ext_complaint
, name
);
2512 if (!ECOFF_IN_ELF (cur_bfd
))
2513 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2516 /* Pass 3 over files, over local syms: fill in static symbols */
2517 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2519 struct partial_symtab
*save_pst
;
2523 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2527 fdr_to_pst
[f_idx
].pst
= NULL
;
2531 /* Determine the start address for this object file from the
2532 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2536 if (relocatable
|| textlow
!= 0)
2537 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2541 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2544 objfile
->global_psymbols
.next
,
2545 objfile
->static_psymbols
.next
);
2546 pst
->read_symtab_private
= ((char *)
2547 obstack_alloc (&objfile
->psymbol_obstack
,
2548 sizeof (struct symloc
)));
2549 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2552 TEXTLOW (pst
) = pst
->textlow
;
2553 TEXTHIGH (pst
) = pst
->texthigh
;
2554 FDR_IDX (pst
) = f_idx
;
2555 CUR_BFD (pst
) = cur_bfd
;
2556 DEBUG_SWAP (pst
) = debug_swap
;
2557 DEBUG_INFO (pst
) = debug_info
;
2558 PENDING_LIST (pst
) = pending_list
;
2560 /* The way to turn this into a symtab is to call... */
2561 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2563 /* Set up language for the pst.
2564 The language from the FDR is used if it is unambigious (e.g. cfront
2565 with native cc and g++ will set the language to C).
2566 Otherwise we have to deduce the language from the filename.
2567 Native ecoff has every header file in a separate FDR, so
2568 deduce_language_from_filename will return language_unknown for
2569 a header file, which is not what we want.
2570 But the FDRs for the header files are after the FDR for the source
2571 file, so we can assign the language of the source file to the
2572 following header files. Then we save the language in the private
2573 pst data so that we can reuse it when building symtabs. */
2574 prev_language
= psymtab_language
;
2578 case langCplusplusV2
:
2579 psymtab_language
= language_cplus
;
2582 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2585 if (psymtab_language
== language_unknown
)
2586 psymtab_language
= prev_language
;
2587 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2589 TEXTHIGH (pst
) = TEXTLOW (pst
);
2591 /* For stabs-in-ecoff files, the second symbol must be @stab.
2592 This symbol is emitted by mips-tfile to signal that the
2593 current object file uses encapsulated stabs instead of mips
2594 ecoff for local symbols. (It is the second symbol because
2595 the first symbol is the stFile used to signal the start of a
2597 processing_gcc_compilation
= 0;
2600 (*swap_sym_in
) (cur_bfd
,
2601 ((char *) debug_info
->external_sym
2602 + (fh
->isymBase
+ 1) * external_sym_size
),
2604 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2605 processing_gcc_compilation
= 2;
2608 if (processing_gcc_compilation
!= 0)
2610 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2615 (*swap_sym_in
) (cur_bfd
,
2616 (((char *) debug_info
->external_sym
)
2617 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2619 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2620 if (!ECOFF_IS_STAB (&sh
))
2622 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2627 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2628 if (sh
.st
== stStaticProc
)
2630 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2631 prim_record_minimal_symbol_and_info (namestring
,
2635 SECT_OFF_TEXT (objfile
),
2639 procaddr
= sh
.value
;
2641 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2642 (debug_info
->external_aux
2645 (*swap_sym_in
) (cur_bfd
,
2646 ((char *) debug_info
->external_sym
2647 + ((fh
->isymBase
+ isym
- 1)
2648 * external_sym_size
)),
2652 CORE_ADDR high
= procaddr
+ sh
.value
;
2654 /* Kludge for Irix 5.2 zero fh->adr. */
2656 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
2657 TEXTLOW (pst
) = procaddr
;
2658 if (high
> TEXTHIGH (pst
))
2659 TEXTHIGH (pst
) = high
;
2662 else if (sh
.st
== stStatic
)
2677 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2678 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2679 prim_record_minimal_symbol_and_info (namestring
,
2683 SECT_OFF_DATA (objfile
),
2689 /* FIXME! Shouldn't this use cases for bss,
2690 then have the default be abs? */
2691 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2692 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2693 prim_record_minimal_symbol_and_info (namestring
,
2697 SECT_OFF_BSS (objfile
),
2705 /* Handle stabs continuation */
2707 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2708 int len
= strlen (stabstring
);
2709 while (stabstring
[len
- 1] == '\\')
2712 char *stabstring1
= stabstring
;
2716 /* Ignore continuation char from 1st string */
2719 /* Read next stabstring */
2721 (*swap_sym_in
) (cur_bfd
,
2722 (((char *) debug_info
->external_sym
)
2723 + (fh
->isymBase
+ cur_sdx
)
2724 * external_sym_size
),
2726 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2727 len2
= strlen (stabstring2
);
2729 /* Concatinate stabstring2 with stabstring1 */
2731 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2732 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2735 stabstring
= xmalloc (len
+ len2
+ 1);
2736 strcpy (stabstring
, stabstring1
);
2738 strcpy (stabstring
+ len
, stabstring2
);
2744 static struct complaint function_outside_compilation_unit
= {
2745 "function `%s' appears to be defined outside of all compilation units", 0, 0
2749 * Standard, external, non-debugger, symbols
2752 case N_TEXT
| N_EXT
:
2753 case N_NBTEXT
| N_EXT
:
2754 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2757 case N_DATA
| N_EXT
:
2758 case N_NBDATA
| N_EXT
:
2759 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2764 case N_NBBSS
| N_EXT
:
2765 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2766 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2773 /* Standard, local, non-debugger, symbols */
2777 /* We need to be able to deal with both N_FN or N_TEXT,
2778 because we have no way of knowing whether the sys-supplied ld
2779 or GNU ld was used to make the executable. Sequents throw
2780 in another wrinkle -- they renumbered N_FN. */
2788 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2791 case N_UNDF
| N_EXT
:
2792 continue; /* Just undefined, not COMMON */
2797 /* Lots of symbol types we can just ignore. */
2804 /* Keep going . . . */
2807 * Special symbol types for GNU
2810 case N_INDR
| N_EXT
:
2812 case N_SETA
| N_EXT
:
2814 case N_SETT
| N_EXT
:
2816 case N_SETD
| N_EXT
:
2818 case N_SETB
| N_EXT
:
2829 static int prev_so_symnum
= -10;
2830 static int first_so_symnum
;
2832 int prev_textlow_not_set
;
2834 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2836 prev_textlow_not_set
= textlow_not_set
;
2838 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2839 /* A zero value is probably an indication for the SunPRO 3.0
2840 compiler. end_psymtab explicitly tests for zero, so
2841 don't relocate it. */
2845 textlow_not_set
= 1;
2849 textlow_not_set
= 0;
2851 textlow_not_set
= 0;
2853 past_first_source_file
= 1;
2855 if (prev_so_symnum
!= symnum
- 1)
2856 { /* Here if prev stab wasn't N_SO */
2857 first_so_symnum
= symnum
;
2861 pst
= (struct partial_symtab
*) 0;
2863 dependencies_used
= 0;
2867 prev_so_symnum
= symnum
;
2869 /* End the current partial symtab and start a new one */
2871 /* SET_NAMESTRING ();*/
2872 namestring
= stabstring
;
2874 /* Null name means end of .o file. Don't start a new one. */
2875 if (*namestring
== '\000')
2878 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2879 The first one is a directory name; the second the file name.
2880 If pst exists, is empty, and has a filename ending in '/',
2881 we assume the previous N_SO was a directory name. */
2883 p
= strrchr (namestring
, '/');
2884 if (p
&& *(p
+ 1) == '\000')
2885 continue; /* Simply ignore directory name SOs */
2887 /* Some other compilers (C++ ones in particular) emit useless
2888 SOs for non-existant .c files. We ignore all subsequent SOs that
2889 immediately follow the first. */
2901 enum language tmp_language
;
2902 /* Mark down an include file in the current psymtab */
2904 /* SET_NAMESTRING ();*/
2905 namestring
= stabstring
;
2907 tmp_language
= deduce_language_from_filename (namestring
);
2909 /* Only change the psymtab's language if we've learned
2910 something useful (eg. tmp_language is not language_unknown).
2911 In addition, to match what start_subfile does, never change
2913 if (tmp_language
!= language_unknown
2914 && (tmp_language
!= language_c
2915 || psymtab_language
!= language_cplus
))
2916 psymtab_language
= tmp_language
;
2918 /* In C++, one may expect the same filename to come round many
2919 times, when code is coming alternately from the main file
2920 and from inline functions in other files. So I check to see
2921 if this is a file we've seen before -- either the main
2922 source file, or a previously included file.
2924 This seems to be a lot of time to be spending on N_SOL, but
2925 things like "break c-exp.y:435" need to work (I
2926 suppose the psymtab_include_list could be hashed or put
2927 in a binary tree, if profiling shows this is a major hog). */
2928 if (pst
&& STREQ (namestring
, pst
->filename
))
2932 for (i
= 0; i
< includes_used
; i
++)
2933 if (STREQ (namestring
, psymtab_include_list
[i
]))
2942 psymtab_include_list
[includes_used
++] = namestring
;
2943 if (includes_used
>= includes_allocated
)
2945 char **orig
= psymtab_include_list
;
2947 psymtab_include_list
= (char **)
2948 alloca ((includes_allocated
*= 2) *
2950 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2951 includes_used
* sizeof (char *));
2955 case N_LSYM
: /* Typedef or automatic variable. */
2956 case N_STSYM
: /* Data seg var -- static */
2957 case N_LCSYM
: /* BSS " */
2958 case N_ROSYM
: /* Read-only data seg var -- static. */
2959 case N_NBSTS
: /* Gould nobase. */
2960 case N_NBLCS
: /* symbols. */
2962 case N_GSYM
: /* Global (extern) variable; can be
2963 data or bss (sigh FIXME). */
2965 /* Following may probably be ignored; I'll leave them here
2966 for now (until I do Pascal and Modula 2 extensions). */
2968 case N_PC
: /* I may or may not need this; I
2970 case N_M2C
: /* I suspect that I can ignore this here. */
2971 case N_SCOPE
: /* Same. */
2973 /* SET_NAMESTRING ();*/
2974 namestring
= stabstring
;
2975 p
= (char *) strchr (namestring
, ':');
2977 continue; /* Not a debugging symbol. */
2981 /* Main processing section for debugging symbols which
2982 the initial read through the symbol tables needs to worry
2983 about. If we reach this point, the symbol which we are
2984 considering is definitely one we are interested in.
2985 p must also contain the (valid) index into the namestring
2986 which indicates the debugging type symbol. */
2991 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2992 #ifdef STATIC_TRANSFORM_NAME
2993 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2995 add_psymbol_to_list (namestring
, p
- namestring
,
2996 VAR_NAMESPACE
, LOC_STATIC
,
2997 &objfile
->static_psymbols
,
2999 psymtab_language
, objfile
);
3002 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3003 /* The addresses in these entries are reported to be
3004 wrong. See the code that reads 'G's for symtabs. */
3005 add_psymbol_to_list (namestring
, p
- namestring
,
3006 VAR_NAMESPACE
, LOC_STATIC
,
3007 &objfile
->global_psymbols
,
3009 psymtab_language
, objfile
);
3013 /* When a 'T' entry is defining an anonymous enum, it
3014 may have a name which is the empty string, or a
3015 single space. Since they're not really defining a
3016 symbol, those shouldn't go in the partial symbol
3017 table. We do pick up the elements of such enums at
3018 'check_enum:', below. */
3019 if (p
>= namestring
+ 2
3020 || (p
== namestring
+ 1
3021 && namestring
[0] != ' '))
3023 add_psymbol_to_list (namestring
, p
- namestring
,
3024 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3025 &objfile
->static_psymbols
,
3027 psymtab_language
, objfile
);
3030 /* Also a typedef with the same name. */
3031 add_psymbol_to_list (namestring
, p
- namestring
,
3032 VAR_NAMESPACE
, LOC_TYPEDEF
,
3033 &objfile
->static_psymbols
,
3035 psymtab_language
, objfile
);
3038 /* The semantics of C++ state that "struct foo { ... }"
3039 also defines a typedef for "foo". Unfortuantely, cfront
3040 never makes the typedef when translating from C++ to C.
3041 We make the typedef here so that "ptype foo" works as
3042 expected for cfront translated code. */
3043 else if (psymtab_language
== language_cplus
)
3045 /* Also a typedef with the same name. */
3046 add_psymbol_to_list (namestring
, p
- namestring
,
3047 VAR_NAMESPACE
, LOC_TYPEDEF
,
3048 &objfile
->static_psymbols
,
3050 psymtab_language
, objfile
);
3055 if (p
!= namestring
) /* a name is there, not just :T... */
3057 add_psymbol_to_list (namestring
, p
- namestring
,
3058 VAR_NAMESPACE
, LOC_TYPEDEF
,
3059 &objfile
->static_psymbols
,
3061 psymtab_language
, objfile
);
3064 /* If this is an enumerated type, we need to
3065 add all the enum constants to the partial symbol
3066 table. This does not cover enums without names, e.g.
3067 "enum {a, b} c;" in C, but fortunately those are
3068 rare. There is no way for GDB to find those from the
3069 enum type without spending too much time on it. Thus
3070 to solve this problem, the compiler needs to put out the
3071 enum in a nameless type. GCC2 does this. */
3073 /* We are looking for something of the form
3074 <name> ":" ("t" | "T") [<number> "="] "e"
3075 {<constant> ":" <value> ","} ";". */
3077 /* Skip over the colon and the 't' or 'T'. */
3079 /* This type may be given a number. Also, numbers can come
3080 in pairs like (0,26). Skip over it. */
3081 while ((*p
>= '0' && *p
<= '9')
3082 || *p
== '(' || *p
== ',' || *p
== ')'
3088 /* The aix4 compiler emits extra crud before the members. */
3091 /* Skip over the type (?). */
3095 /* Skip over the colon. */
3099 /* We have found an enumerated type. */
3100 /* According to comments in read_enum_type
3101 a comma could end it instead of a semicolon.
3102 I don't know where that happens.
3104 while (*p
&& *p
!= ';' && *p
!= ',')
3108 /* Check for and handle cretinous dbx symbol name
3110 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3111 p
= next_symbol_text (objfile
);
3113 /* Point to the character after the name
3114 of the enum constant. */
3115 for (q
= p
; *q
&& *q
!= ':'; q
++)
3117 /* Note that the value doesn't matter for
3118 enum constants in psymtabs, just in symtabs. */
3119 add_psymbol_to_list (p
, q
- p
,
3120 VAR_NAMESPACE
, LOC_CONST
,
3121 &objfile
->static_psymbols
, 0,
3122 0, psymtab_language
, objfile
);
3123 /* Point past the name. */
3125 /* Skip over the value. */
3126 while (*p
&& *p
!= ',')
3128 /* Advance past the comma. */
3135 /* Constant, e.g. from "const" in Pascal. */
3136 add_psymbol_to_list (namestring
, p
- namestring
,
3137 VAR_NAMESPACE
, LOC_CONST
,
3138 &objfile
->static_psymbols
, sh
.value
,
3139 0, psymtab_language
, objfile
);
3145 int name_len
= p
- namestring
;
3146 char *name
= xmalloc (name_len
+ 1);
3147 memcpy (name
, namestring
, name_len
);
3148 name
[name_len
] = '\0';
3149 complain (&function_outside_compilation_unit
, name
);
3152 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3153 add_psymbol_to_list (namestring
, p
- namestring
,
3154 VAR_NAMESPACE
, LOC_BLOCK
,
3155 &objfile
->static_psymbols
,
3157 psymtab_language
, objfile
);
3160 /* Global functions were ignored here, but now they
3161 are put into the global psymtab like one would expect.
3162 They're also in the minimal symbol table. */
3166 int name_len
= p
- namestring
;
3167 char *name
= xmalloc (name_len
+ 1);
3168 memcpy (name
, namestring
, name_len
);
3169 name
[name_len
] = '\0';
3170 complain (&function_outside_compilation_unit
, name
);
3173 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3174 add_psymbol_to_list (namestring
, p
- namestring
,
3175 VAR_NAMESPACE
, LOC_BLOCK
,
3176 &objfile
->global_psymbols
,
3178 psymtab_language
, objfile
);
3181 /* Two things show up here (hopefully); static symbols of
3182 local scope (static used inside braces) or extensions
3183 of structure symbols. We can ignore both. */
3197 case '#': /* for symbol identification (used in live ranges) */
3198 /* added to support cfront stabs strings */
3199 case 'Z': /* for definition continuations */
3200 case 'P': /* for prototypes */
3204 /* It is a C++ nested symbol. We don't need to record it
3205 (I don't think); if we try to look up foo::bar::baz,
3206 then symbols for the symtab containing foo should get
3207 read in, I think. */
3208 /* Someone says sun cc puts out symbols like
3209 /foo/baz/maclib::/usr/local/bin/maclib,
3210 which would get here with a symbol type of ':'. */
3214 /* Unexpected symbol descriptor. The second and subsequent stabs
3215 of a continued stab can show up here. The question is
3216 whether they ever can mimic a normal stab--it would be
3217 nice if not, since we certainly don't want to spend the
3218 time searching to the end of every string looking for
3221 complain (&unknown_symchar_complaint
, p
[1]);
3223 /* Ignore it; perhaps it is an extension that we don't
3232 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3233 /* Solaris 2 end of module, finish current partial symbol table.
3234 END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which
3235 is necessary if a module compiled without debugging info
3236 follows this module. */
3239 pst
= (struct partial_symtab
*) 0;
3241 dependencies_used
= 0;
3247 if (sh
.value
> TEXTHIGH (save_pst
))
3248 TEXTHIGH (save_pst
) = sh
.value
;
3253 case N_SSYM
: /* Claim: Structure or union element.
3254 Hopefully, I can ignore this. */
3255 case N_ENTRY
: /* Alternate entry point; can ignore. */
3256 case N_MAIN
: /* Can definitely ignore this. */
3257 case N_CATCH
: /* These are GNU C++ extensions */
3258 case N_EHDECL
: /* that can safely be ignored here. */
3268 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3269 case N_DEFD
: /* GNU Modula-2 */
3270 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3272 case N_OBJ
: /* useless types from Solaris */
3274 /* These symbols aren't interesting; don't worry about them */
3279 /* If we haven't found it yet, ignore it. It's probably some
3280 new type we don't know about yet. */
3281 complain (&unknown_symtype_complaint
,
3282 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3286 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3289 /* end - Handle continuation */
3294 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3297 enum address_class
class;
3299 (*swap_sym_in
) (cur_bfd
,
3300 ((char *) debug_info
->external_sym
3301 + ((fh
->isymBase
+ cur_sdx
)
3302 * external_sym_size
)),
3305 if (ECOFF_IS_STAB (&sh
))
3311 /* Non absolute static symbols go into the minimal table. */
3312 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3313 || (sh
.index
== indexNil
3314 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3316 /* FIXME, premature? */
3321 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3327 /* The value of a stEnd symbol is the displacement from the
3328 corresponding start symbol value, do not relocate it. */
3330 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3337 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3341 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3352 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3353 mst_file_text
, NULL
,
3354 SECT_OFF_TEXT (objfile
), NULL
,
3360 /* Usually there is a local and a global stProc symbol
3361 for a function. This means that the function name
3362 has already been entered into the mimimal symbol table
3363 while processing the global symbols in pass 2 above.
3364 One notable exception is the PROGRAM name from
3365 f77 compiled executables, it is only put out as
3366 local stProc symbol, and a global MAIN__ stProc symbol
3367 points to it. It doesn't matter though, as gdb is
3368 still able to find the PROGRAM name via the partial
3369 symbol table, and the MAIN__ symbol via the minimal
3371 if (sh
.st
== stProc
)
3372 add_psymbol_to_list (name
, strlen (name
),
3373 VAR_NAMESPACE
, LOC_BLOCK
,
3374 &objfile
->global_psymbols
,
3375 0, sh
.value
, psymtab_language
, objfile
);
3377 add_psymbol_to_list (name
, strlen (name
),
3378 VAR_NAMESPACE
, LOC_BLOCK
,
3379 &objfile
->static_psymbols
,
3380 0, sh
.value
, psymtab_language
, objfile
);
3382 /* Skip over procedure to next one. */
3383 if (sh
.index
>= hdr
->iauxMax
)
3385 /* Should not happen, but does when cross-compiling
3386 with the MIPS compiler. FIXME -- pull later. */
3387 complain (&index_complaint
, name
);
3388 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3391 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3392 (debug_info
->external_aux
3395 procaddr
= sh
.value
;
3397 if (new_sdx
<= cur_sdx
)
3399 /* This should not happen either... FIXME. */
3400 complain (&aux_index_complaint
, name
);
3401 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3405 (*swap_sym_in
) (cur_bfd
,
3406 ((char *) debug_info
->external_sym
3407 + ((fh
->isymBase
+ cur_sdx
- 1)
3408 * external_sym_size
)),
3413 /* Kludge for Irix 5.2 zero fh->adr. */
3415 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
3416 TEXTLOW (pst
) = procaddr
;
3418 high
= procaddr
+ sh
.value
;
3419 if (high
> TEXTHIGH (pst
))
3420 TEXTHIGH (pst
) = high
;
3423 case stStatic
: /* Variable */
3424 if (SC_IS_DATA (sh
.sc
))
3425 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3426 mst_file_data
, NULL
,
3427 SECT_OFF_DATA (objfile
),
3431 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3433 SECT_OFF_BSS (objfile
),
3439 case stIndirect
: /* Irix5 forward declaration */
3440 /* Skip forward declarations from Irix5 cc */
3443 case stTypedef
: /* Typedef */
3444 /* Skip typedefs for forward declarations and opaque
3445 structs from alpha and mips cc. */
3446 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3448 class = LOC_TYPEDEF
;
3451 case stConstant
: /* Constant decl */
3458 case stBlock
: /* { }, str, un, enum */
3459 /* Do not create a partial symbol for cc unnamed aggregates
3460 and gcc empty aggregates. */
3461 if ((sh
.sc
== scInfo
3462 || SC_IS_COMMON (sh
.sc
))
3464 && sh
.index
!= cur_sdx
+ 2)
3466 add_psymbol_to_list (name
, strlen (name
),
3467 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3468 &objfile
->static_psymbols
,
3470 psymtab_language
, objfile
);
3472 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3474 /* Skip over the block */
3476 if (new_sdx
<= cur_sdx
)
3478 /* This happens with the Ultrix kernel. */
3479 complain (&block_index_complaint
, name
);
3480 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3485 case stFile
: /* File headers */
3486 case stLabel
: /* Labels */
3487 case stEnd
: /* Ends of files */
3490 case stLocal
: /* Local variables */
3491 /* Normally these are skipped because we skip over
3492 all blocks we see. However, these can occur
3493 as visible symbols in a .h file that contains code. */
3497 /* Both complaints are valid: one gives symbol name,
3498 the other the offending symbol type. */
3499 complain (&unknown_sym_complaint
, name
);
3500 complain (&unknown_st_complaint
, sh
.st
);
3504 /* Use this gdb symbol */
3505 add_psymbol_to_list (name
, strlen (name
),
3506 VAR_NAMESPACE
, class,
3507 &objfile
->static_psymbols
,
3508 0, sh
.value
, psymtab_language
, objfile
);
3510 cur_sdx
++; /* Go to next file symbol */
3513 /* Now do enter the external symbols. */
3514 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3515 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3516 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3517 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3518 for (; --cur_sdx
>= 0; ext_ptr
++)
3520 enum address_class
class;
3525 if (ext_ptr
->ifd
!= f_idx
)
3526 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3527 psh
= &ext_ptr
->asym
;
3529 /* Do not add undefined symbols to the partial symbol table. */
3530 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3533 svalue
= psh
->value
;
3538 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3545 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3549 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3556 /* These are generated for static symbols in .o files,
3561 /* External procedure symbols have been entered
3562 into the minimal symbol table in pass 2 above.
3563 Ignore them, as parse_external will ignore them too. */
3569 complain (&unknown_ext_complaint
,
3570 debug_info
->ssext
+ psh
->iss
);
3571 /* Fall through, pretend it's global. */
3573 /* Global common symbols are resolved by the runtime loader,
3575 if (SC_IS_COMMON (psh
->sc
))
3581 name
= debug_info
->ssext
+ psh
->iss
;
3582 add_psymbol_to_list (name
, strlen (name
),
3583 VAR_NAMESPACE
, class,
3584 &objfile
->global_psymbols
,
3586 psymtab_language
, objfile
);
3590 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3591 empty and put on the free list. */
3592 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3593 psymtab_include_list
, includes_used
,
3594 -1, TEXTHIGH (save_pst
),
3595 dependency_list
, dependencies_used
, textlow_not_set
);
3597 dependencies_used
= 0;
3599 if (objfile
->ei
.entry_point
>= TEXTLOW (save_pst
) &&
3600 objfile
->ei
.entry_point
< TEXTHIGH (save_pst
))
3602 objfile
->ei
.entry_file_lowpc
= TEXTLOW (save_pst
);
3603 objfile
->ei
.entry_file_highpc
= TEXTHIGH (save_pst
);
3606 /* The objfile has its functions reordered if this partial symbol
3607 table overlaps any other partial symbol table.
3608 We cannot assume a reordered objfile if a partial symbol table
3609 is contained within another partial symbol table, as partial symbol
3610 tables for include files with executable code are contained
3611 within the partial symbol table for the including source file,
3612 and we do not want to flag the objfile reordered for these cases.
3614 This strategy works well for Irix-5.2 shared libraries, but we
3615 might have to use a more elaborate (and slower) algorithm for
3617 save_pst
= fdr_to_pst
[f_idx
].pst
;
3618 if (save_pst
!= NULL
3619 && TEXTLOW (save_pst
) != 0
3620 && !(objfile
->flags
& OBJF_REORDERED
))
3622 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3625 && TEXTLOW (save_pst
) >= TEXTLOW (pst
)
3626 && TEXTLOW (save_pst
) < TEXTHIGH (pst
)
3627 && TEXTHIGH (save_pst
) > TEXTHIGH (pst
))
3629 objfile
->flags
|= OBJF_REORDERED
;
3636 /* Now scan the FDRs for dependencies */
3637 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3639 fh
= f_idx
+ debug_info
->fdr
;
3640 pst
= fdr_to_pst
[f_idx
].pst
;
3642 if (pst
== (struct partial_symtab
*) NULL
)
3645 /* This should catch stabs-in-ecoff. */
3649 /* Skip the first file indirect entry as it is a self dependency
3650 for source files or a reverse .h -> .c dependency for header files. */
3651 pst
->number_of_dependencies
= 0;
3653 ((struct partial_symtab
**)
3654 obstack_alloc (&objfile
->psymbol_obstack
,
3656 * sizeof (struct partial_symtab
*))));
3657 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3661 (*swap_rfd_in
) (cur_bfd
,
3662 ((char *) debug_info
->external_rfd
3663 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3665 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3667 complain (&bad_file_number_complaint
, rh
);
3671 /* Skip self dependencies of header files. */
3675 /* Do not add to dependeny list if psymtab was empty. */
3676 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3678 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3682 /* Remove the dummy psymtab created for -O3 images above, if it is
3683 still empty, to enable the detection of stripped executables. */
3684 if (objfile
->psymtabs
->next
== NULL
3685 && objfile
->psymtabs
->number_of_dependencies
== 0
3686 && objfile
->psymtabs
->n_global_syms
== 0
3687 && objfile
->psymtabs
->n_static_syms
== 0)
3688 objfile
->psymtabs
= NULL
;
3689 do_cleanups (old_chain
);
3692 /* If the current psymbol has an enumerated type, we need to add
3693 all the the enum constants to the partial symbol table. */
3696 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3699 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3700 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3701 char *ext_sym
= ((char *) debug_info
->external_sym
3702 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3712 /* It is an enumerated type if the next symbol entry is a stMember
3713 and its auxiliary index is indexNil or its auxiliary entry
3714 is a plain btNil or btVoid.
3715 Alpha cc -migrate enums are recognized by a zero index and
3716 a zero symbol value.
3717 DU 4.0 cc enums are recognized by a member type of btEnum without
3718 qualifiers and a zero symbol value. */
3719 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3720 if (sh
.st
!= stMember
)
3723 if (sh
.index
== indexNil
3724 || (sh
.index
== 0 && svalue
== 0))
3726 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3727 &(debug_info
->external_aux
3728 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3730 if ((tir
.bt
!= btNil
3732 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3733 || tir
.tq0
!= tqNil
)
3745 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3746 if (sh
.st
!= stMember
)
3748 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3750 /* Note that the value doesn't matter for enum constants
3751 in psymtabs, just in symtabs. */
3752 add_psymbol_to_list (name
, strlen (name
),
3753 VAR_NAMESPACE
, LOC_CONST
,
3754 &objfile
->static_psymbols
, 0,
3755 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3756 ext_sym
+= external_sym_size
;
3760 /* Get the next symbol. OBJFILE is unused. */
3763 mdebug_next_symbol_text (struct objfile
*objfile
)
3768 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3769 ((char *) debug_info
->external_sym
3770 + ((cur_fdr
->isymBase
+ cur_sdx
)
3771 * debug_swap
->external_sym_size
)),
3773 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3776 /* Ancillary function to psymtab_to_symtab(). Does all the work
3777 for turning the partial symtab PST into a symtab, recurring
3778 first on all dependent psymtabs. The argument FILENAME is
3779 only passed so we can see in debug stack traces what file
3782 This function has a split personality, based on whether the
3783 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3784 The flow of control and even the memory allocation differs. FIXME. */
3787 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3789 bfd_size_type external_sym_size
;
3790 bfd_size_type external_pdr_size
;
3791 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3792 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3794 struct symtab
*st
= NULL
;
3796 struct linetable
*lines
;
3797 CORE_ADDR lowest_pdr_addr
= 0;
3798 int last_symtab_ended
= 0;
3804 /* Read in all partial symbtabs on which this one is dependent.
3805 NOTE that we do have circular dependencies, sigh. We solved
3806 that by setting pst->readin before this point. */
3808 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3809 if (!pst
->dependencies
[i
]->readin
)
3811 /* Inform about additional files to be read in. */
3814 fputs_filtered (" ", gdb_stdout
);
3816 fputs_filtered ("and ", gdb_stdout
);
3818 printf_filtered ("%s...",
3819 pst
->dependencies
[i
]->filename
);
3820 wrap_here (""); /* Flush output */
3821 gdb_flush (gdb_stdout
);
3823 /* We only pass the filename for debug purposes */
3824 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3825 pst
->dependencies
[i
]->filename
);
3828 /* Do nothing if this is a dummy psymtab. */
3830 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3831 && TEXTLOW (pst
) == 0 && TEXTHIGH (pst
) == 0)
3834 /* Now read the symbols for this symtab */
3836 cur_bfd
= CUR_BFD (pst
);
3837 debug_swap
= DEBUG_SWAP (pst
);
3838 debug_info
= DEBUG_INFO (pst
);
3839 pending_list
= PENDING_LIST (pst
);
3840 external_sym_size
= debug_swap
->external_sym_size
;
3841 external_pdr_size
= debug_swap
->external_pdr_size
;
3842 swap_sym_in
= debug_swap
->swap_sym_in
;
3843 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3844 current_objfile
= pst
->objfile
;
3845 cur_fd
= FDR_IDX (pst
);
3846 fh
= ((cur_fd
== -1)
3848 : debug_info
->fdr
+ cur_fd
);
3851 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3852 processing_gcc_compilation
= 0;
3853 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3857 (*swap_sym_in
) (cur_bfd
,
3858 ((char *) debug_info
->external_sym
3859 + (fh
->isymBase
+ 1) * external_sym_size
),
3861 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3864 /* We indicate that this is a GCC compilation so that certain
3865 features will be enabled in stabsread/dbxread. */
3866 processing_gcc_compilation
= 2;
3870 if (processing_gcc_compilation
!= 0)
3873 /* This symbol table contains stabs-in-ecoff entries. */
3875 /* Parse local symbols first */
3877 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3879 current_objfile
= NULL
;
3882 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3888 (*swap_sym_in
) (cur_bfd
,
3889 (((char *) debug_info
->external_sym
)
3890 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3892 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3894 /* XXX This is a hack. It will go away! */
3895 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3897 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3899 /* We should never get non N_STAB symbols here, but they
3900 should be harmless, so keep process_one_symbol from
3901 complaining about them. */
3902 if (type_code
& N_STAB
)
3904 /* If we found a trailing N_SO with no name, process
3905 it here instead of in process_one_symbol, so we
3906 can keep a handle to its symtab. The symtab
3907 would otherwise be ended twice, once in
3908 process_one_symbol, and once after this loop. */
3909 if (type_code
== N_SO
3911 && previous_stab_code
!= (unsigned char) N_SO
3914 valu
+= ANOFFSET (pst
->section_offsets
,
3915 SECT_OFF_TEXT (pst
->objfile
));
3916 previous_stab_code
= N_SO
;
3917 st
= end_symtab (valu
, pst
->objfile
,
3918 SECT_OFF_TEXT (pst
->objfile
));
3920 last_symtab_ended
= 1;
3924 last_symtab_ended
= 0;
3925 process_one_symbol (type_code
, 0, valu
, name
,
3926 pst
->section_offsets
, pst
->objfile
);
3929 /* Similarly a hack. */
3930 else if (name
[0] == '#')
3932 process_one_symbol (N_SLINE
, 0, valu
, name
,
3933 pst
->section_offsets
, pst
->objfile
);
3935 if (type_code
== N_FUN
)
3937 /* Make up special symbol to contain
3938 procedure specific info */
3939 struct mips_extra_func_info
*e
=
3940 ((struct mips_extra_func_info
*)
3941 obstack_alloc (¤t_objfile
->symbol_obstack
,
3942 sizeof (struct mips_extra_func_info
)));
3943 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3945 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3946 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3947 SYMBOL_CLASS (s
) = LOC_CONST
;
3948 SYMBOL_TYPE (s
) = mdebug_type_void
;
3949 SYMBOL_VALUE (s
) = (long) e
;
3950 e
->pdr
.framereg
= -1;
3951 add_symbol_to_list (s
, &local_symbols
);
3954 else if (sh
.st
== stLabel
)
3956 if (sh
.index
== indexNil
)
3958 /* This is what the gcc2_compiled and __gnu_compiled_*
3959 show up as. So don't complain. */
3964 /* Handle encoded stab line number. */
3965 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3966 record_line (current_subfile
, sh
.index
, valu
);
3969 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3970 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3971 /* These are generated by gcc-2.x, do not complain */
3974 complain (&stab_unknown_complaint
, name
);
3977 if (! last_symtab_ended
)
3979 st
= end_symtab (TEXTHIGH (pst
), pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3983 /* Sort the symbol table now, we are done adding symbols to it.
3984 We must do this before parse_procedure calls lookup_symbol. */
3985 sort_symtab_syms (st
);
3987 /* There used to be a call to sort_blocks here, but this should not
3988 be necessary for stabs symtabs. And as sort_blocks modifies the
3989 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3990 it did the wrong thing if the first procedure in a file was
3991 generated via asm statements. */
3993 /* Fill in procedure info next. */
3997 struct cleanup
*old_chain
;
4003 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4004 old_chain
= make_cleanup (xfree
, pr_block
);
4006 pdr_ptr
= ((char *) debug_info
->external_pdr
4007 + fh
->ipdFirst
* external_pdr_size
);
4008 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4012 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4014 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4016 /* Determine lowest PDR address, the PDRs are not always
4018 if (pdr_in
== pr_block
)
4019 lowest_pdr_addr
= pdr_in
->adr
;
4020 else if (pdr_in
->adr
< lowest_pdr_addr
)
4021 lowest_pdr_addr
= pdr_in
->adr
;
4025 pdr_in_end
= pdr_in
+ fh
->cpd
;
4026 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4027 parse_procedure (pdr_in
, st
, pst
);
4029 do_cleanups (old_chain
);
4034 /* This symbol table contains ordinary ecoff entries. */
4040 /* How many symbols will we need */
4041 /* FIXME, this does not count enum values. */
4042 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4046 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4050 f_max
+= fh
->csym
+ fh
->cpd
;
4051 maxlines
= 2 * fh
->cline
;
4052 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4054 /* The proper language was already determined when building
4055 the psymtab, use it. */
4056 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4059 psymtab_language
= st
->language
;
4061 lines
= LINETABLE (st
);
4063 /* Get a new lexical context */
4065 push_parse_stack ();
4066 top_stack
->cur_st
= st
;
4067 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4069 BLOCK_START (top_stack
->cur_block
) = TEXTLOW (pst
);
4070 BLOCK_END (top_stack
->cur_block
) = 0;
4071 top_stack
->blocktype
= stFile
;
4072 top_stack
->maxsyms
= 2 * f_max
;
4073 top_stack
->cur_type
= 0;
4074 top_stack
->procadr
= 0;
4075 top_stack
->numargs
= 0;
4076 found_ecoff_debugging_info
= 0;
4083 /* Parse local symbols first */
4084 sym_ptr
= ((char *) debug_info
->external_sym
4085 + fh
->isymBase
* external_sym_size
);
4086 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4087 while (sym_ptr
< sym_end
)
4092 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4093 c
= parse_symbol (&sh
,
4094 debug_info
->external_aux
+ fh
->iauxBase
,
4095 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4096 sym_ptr
+= c
* external_sym_size
;
4099 /* Linenumbers. At the end, check if we can save memory.
4100 parse_lines has to look ahead an arbitrary number of PDR
4101 structures, so we swap them all first. */
4105 struct cleanup
*old_chain
;
4111 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4113 old_chain
= make_cleanup (xfree
, pr_block
);
4115 pdr_ptr
= ((char *) debug_info
->external_pdr
4116 + fh
->ipdFirst
* external_pdr_size
);
4117 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4121 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4123 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4125 /* Determine lowest PDR address, the PDRs are not always
4127 if (pdr_in
== pr_block
)
4128 lowest_pdr_addr
= pdr_in
->adr
;
4129 else if (pdr_in
->adr
< lowest_pdr_addr
)
4130 lowest_pdr_addr
= pdr_in
->adr
;
4133 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4134 if (lines
->nitems
< fh
->cline
)
4135 lines
= shrink_linetable (lines
);
4137 /* Fill in procedure info next. */
4139 pdr_in_end
= pdr_in
+ fh
->cpd
;
4140 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4141 parse_procedure (pdr_in
, 0, pst
);
4143 do_cleanups (old_chain
);
4147 LINETABLE (st
) = lines
;
4149 /* .. and our share of externals.
4150 XXX use the global list to speed up things here. how?
4151 FIXME, Maybe quit once we have found the right number of ext's? */
4152 top_stack
->cur_st
= st
;
4153 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4155 top_stack
->blocktype
= stFile
;
4157 = (debug_info
->symbolic_header
.isymMax
4158 + debug_info
->symbolic_header
.ipdMax
4159 + debug_info
->symbolic_header
.iextMax
);
4161 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4162 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4163 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4165 /* If there are undefined symbols, tell the user.
4166 The alpha has an undefined symbol for every symbol that is
4167 from a shared library, so tell the user only if verbose is on. */
4168 if (info_verbose
&& n_undef_symbols
)
4170 printf_filtered ("File %s contains %d unresolved references:",
4171 st
->filename
, n_undef_symbols
);
4172 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4173 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4174 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4181 /* Sort the symbol table now, we are done adding symbols to it. */
4182 sort_symtab_syms (st
);
4187 /* Now link the psymtab and the symtab. */
4190 current_objfile
= NULL
;
4193 /* Ancillary parsing procedures. */
4195 /* Return 1 if the symbol pointed to by SH has a cross reference
4196 to an opaque aggregate type, else 0. */
4199 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4206 if (sh
->index
== indexNil
)
4209 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4210 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4211 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4215 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4216 if (rn
->rfd
== 0xfff)
4217 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4225 /* Lookup the type at relative index RN. Return it in TPP
4226 if found and in any event come up with its name PNAME.
4227 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4228 Return value says how many aux symbols we ate. */
4231 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. */
4232 char **pname
, int bigend
, char *sym_name
)
4241 struct mdebug_pending
*pend
;
4243 *tpp
= (struct type
*) NULL
;
4245 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4247 /* Escape index means 'the next one' */
4248 if (rn
->rfd
== 0xfff)
4251 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4258 /* mips cc uses a rf of -1 for opaque struct definitions.
4259 Set TYPE_FLAG_STUB for these types so that check_typedef will
4260 resolve them if the struct gets defined in another compilation unit. */
4263 *pname
= "<undefined>";
4264 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4268 /* mips cc uses an escaped rn->index of 0 for struct return types
4269 of procedures that were compiled without -g. These will always remain
4271 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4273 *pname
= "<undefined>";
4277 /* Find the relative file descriptor and the symbol in it. */
4278 fh
= get_rfd (fd
, rf
);
4279 xref_fd
= fh
- debug_info
->fdr
;
4281 if (rn
->index
>= fh
->csym
)
4283 /* File indirect entry is corrupt. */
4284 *pname
= "<illegal>";
4285 complain (&bad_rfd_entry_complaint
,
4286 sym_name
, xref_fd
, rn
->index
);
4290 /* If we have processed this symbol then we left a forwarding
4291 pointer to the type in the pending list. If not, we`ll put
4292 it in a list of pending types, to be processed later when
4293 the file will be. In any event, we collect the name for the
4296 esh
= ((char *) debug_info
->external_sym
4297 + ((fh
->isymBase
+ rn
->index
)
4298 * debug_swap
->external_sym_size
));
4299 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4301 /* Make sure that this type of cross reference can be handled. */
4302 if ((sh
.sc
!= scInfo
4303 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4304 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4305 && sh
.st
!= stEnum
))
4306 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4308 /* File indirect entry is corrupt. */
4309 *pname
= "<illegal>";
4310 complain (&bad_rfd_entry_complaint
,
4311 sym_name
, xref_fd
, rn
->index
);
4315 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4317 pend
= is_pending_symbol (fh
, esh
);
4322 /* We have not yet seen this type. */
4324 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4328 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4330 a) forward declarations of structs/unions/enums which are not
4331 defined in this compilation unit.
4332 For these the type will be void. This is a bad design decision
4333 as cross referencing across compilation units is impossible
4334 due to the missing name.
4335 b) forward declarations of structs/unions/enums/typedefs which
4336 are defined later in this file or in another file in the same
4337 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4338 Simply cross reference those again to get the true type.
4339 The forward references are not entered in the pending list and
4340 in the symbol table. */
4342 (*debug_swap
->swap_tir_in
) (bigend
,
4343 &(debug_info
->external_aux
4344 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4346 if (tir
.tq0
!= tqNil
)
4347 complain (&illegal_forward_tq0_complaint
, sym_name
);
4351 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4353 *pname
= "<undefined>";
4360 (debug_info
->external_aux
4361 + fh
->iauxBase
+ sh
.index
+ 1),
4362 tpp
, type_code
, pname
,
4363 fh
->fBigendian
, sym_name
);
4367 /* Follow a forward typedef. This might recursively
4368 call cross_ref till we get a non typedef'ed type.
4369 FIXME: This is not correct behaviour, but gdb currently
4370 cannot handle typedefs without type copying. Type
4371 copying is impossible as we might have mutual forward
4372 references between two files and the copied type would not
4373 get filled in when we later parse its definition. */
4374 *tpp
= parse_type (xref_fd
,
4375 debug_info
->external_aux
+ fh
->iauxBase
,
4379 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4380 add_pending (fh
, esh
, *tpp
);
4384 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
4385 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4391 else if (sh
.st
== stTypedef
)
4393 /* Parse the type for a normal typedef. This might recursively call
4394 cross_ref till we get a non typedef'ed type.
4395 FIXME: This is not correct behaviour, but gdb currently
4396 cannot handle typedefs without type copying. But type copying is
4397 impossible as we might have mutual forward references between
4398 two files and the copied type would not get filled in when
4399 we later parse its definition. */
4400 *tpp
= parse_type (xref_fd
,
4401 debug_info
->external_aux
+ fh
->iauxBase
,
4405 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4409 /* Cross reference to a struct/union/enum which is defined
4410 in another file in the same compilation unit but that file
4411 has not been parsed yet.
4412 Initialize the type only, it will be filled in when
4413 it's definition is parsed. */
4414 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4416 add_pending (fh
, esh
, *tpp
);
4419 /* We used one auxent normally, two if we got a "next one" rf. */
4424 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4425 keeping the symtab sorted */
4427 static struct symbol
*
4428 mylookup_symbol (char *name
, register struct block
*block
,
4429 namespace_enum
namespace, enum address_class
class)
4435 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4437 if (SYMBOL_NAME (sym
)[0] == inc
4438 && SYMBOL_NAMESPACE (sym
) == namespace
4439 && SYMBOL_CLASS (sym
) == class
4440 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4444 block
= BLOCK_SUPERBLOCK (block
);
4446 return mylookup_symbol (name
, block
, namespace, class);
4451 /* Add a new symbol S to a block B.
4452 Infrequently, we will need to reallocate the block to make it bigger.
4453 We only detect this case when adding to top_stack->cur_block, since
4454 that's the only time we know how big the block is. FIXME. */
4457 add_symbol (struct symbol
*s
, struct block
*b
)
4459 int nsyms
= BLOCK_NSYMS (b
)++;
4460 struct block
*origb
;
4461 struct parse_stack
*stackp
;
4463 if (b
== top_stack
->cur_block
&&
4464 nsyms
>= top_stack
->maxsyms
)
4466 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
4467 /* In this case shrink_block is actually grow_block, since
4468 BLOCK_NSYMS(b) is larger than its current size. */
4470 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4472 /* Now run through the stack replacing pointers to the
4473 original block. shrink_block has already done this
4474 for the blockvector and BLOCK_FUNCTION. */
4475 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4477 if (stackp
->cur_block
== origb
)
4479 stackp
->cur_block
= b
;
4480 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4484 BLOCK_SYM (b
, nsyms
) = s
;
4487 /* Add a new block B to a symtab S */
4490 add_block (struct block
*b
, struct symtab
*s
)
4492 struct blockvector
*bv
= BLOCKVECTOR (s
);
4494 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4495 (sizeof (struct blockvector
)
4496 + BLOCKVECTOR_NBLOCKS (bv
)
4497 * sizeof (bv
->block
)));
4498 if (bv
!= BLOCKVECTOR (s
))
4499 BLOCKVECTOR (s
) = bv
;
4501 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4504 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4505 MIPS' linenumber encoding might need more than one byte
4506 to describe it, LAST is used to detect these continuation lines.
4508 Combining lines with the same line number seems like a bad idea.
4509 E.g: There could be a line number entry with the same line number after the
4510 prologue and GDB should not ignore it (this is a better way to find
4511 a prologue than mips_skip_prologue).
4512 But due to the compressed line table format there are line number entries
4513 for the same line which are needed to bridge the gap to the next
4514 line number entry. These entries have a bogus address info with them
4515 and we are unable to tell them from intended duplicate line number
4517 This is another reason why -ggdb debugging format is preferable. */
4520 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4522 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4523 Change them to something sensible. */
4527 last
= -2; /* make sure we record first line */
4529 if (last
== lineno
) /* skip continuation lines */
4532 lt
->item
[lt
->nitems
].line
= lineno
;
4533 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4537 /* Sorting and reordering procedures */
4539 /* Blocks with a smaller low bound should come first */
4542 compare_blocks (const void *arg1
, const void *arg2
)
4544 register int addr_diff
;
4545 struct block
**b1
= (struct block
**) arg1
;
4546 struct block
**b2
= (struct block
**) arg2
;
4548 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4550 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4554 /* Sort the blocks of a symtab S.
4555 Reorder the blocks in the blockvector by code-address,
4556 as required by some MI search routines */
4559 sort_blocks (struct symtab
*s
)
4561 struct blockvector
*bv
= BLOCKVECTOR (s
);
4563 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4566 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4567 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4568 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4569 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4573 * This is very unfortunate: normally all functions are compiled in
4574 * the order they are found, but if the file is compiled -O3 things
4575 * are very different. It would be nice to find a reliable test
4576 * to detect -O3 images in advance.
4578 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4579 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4580 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4581 sizeof (struct block
*),
4585 register CORE_ADDR high
= 0;
4586 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4588 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4589 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4590 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4591 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4594 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4595 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4597 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4598 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4599 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4600 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4604 /* Constructor/restructor/destructor procedures */
4606 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4607 MAXSYMS and linenumbers MAXLINES we'll put in it */
4609 static struct symtab
*
4610 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4612 struct symtab
*s
= allocate_symtab (name
, objfile
);
4614 LINETABLE (s
) = new_linetable (maxlines
);
4616 /* All symtabs must have at least two blocks */
4617 BLOCKVECTOR (s
) = new_bvect (2);
4618 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4619 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4620 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4621 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4623 s
->free_code
= free_linetable
;
4624 s
->debugformat
= obsavestring ("ECOFF", 5,
4625 &objfile
->symbol_obstack
);
4629 /* Allocate a new partial_symtab NAME */
4631 static struct partial_symtab
*
4632 new_psymtab (char *name
, struct objfile
*objfile
)
4634 struct partial_symtab
*psymtab
;
4636 psymtab
= allocate_psymtab (name
, objfile
);
4637 psymtab
->section_offsets
= objfile
->section_offsets
;
4639 /* Keep a backpointer to the file's symbols */
4641 psymtab
->read_symtab_private
= ((char *)
4642 obstack_alloc (&objfile
->psymbol_obstack
,
4643 sizeof (struct symloc
)));
4644 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4645 CUR_BFD (psymtab
) = cur_bfd
;
4646 DEBUG_SWAP (psymtab
) = debug_swap
;
4647 DEBUG_INFO (psymtab
) = debug_info
;
4648 PENDING_LIST (psymtab
) = pending_list
;
4650 /* The way to turn this into a symtab is to call... */
4651 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4656 /* Allocate a linetable array of the given SIZE. Since the struct
4657 already includes one item, we subtract one when calculating the
4658 proper size to allocate. */
4660 static struct linetable
*
4661 new_linetable (int size
)
4663 struct linetable
*l
;
4665 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4666 l
= (struct linetable
*) xmalloc (size
);
4671 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4672 I am not so sure about the 3.4 ones.
4674 Since the struct linetable already includes one item, we subtract one when
4675 calculating the proper size to allocate. */
4677 static struct linetable
*
4678 shrink_linetable (struct linetable
*lt
)
4681 return (struct linetable
*) xrealloc ((void *) lt
,
4682 (sizeof (struct linetable
)
4684 * sizeof (lt
->item
))));
4687 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4689 static struct blockvector
*
4690 new_bvect (int nblocks
)
4692 struct blockvector
*bv
;
4695 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4696 bv
= (struct blockvector
*) xzalloc (size
);
4698 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4703 /* Allocate and zero a new block of MAXSYMS symbols */
4705 static struct block
*
4706 new_block (int maxsyms
)
4708 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4710 return (struct block
*) xzalloc (size
);
4713 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4714 Shrink_block can also be used by add_symbol to grow a block. */
4716 static struct block
*
4717 shrink_block (struct block
*b
, struct symtab
*s
)
4720 struct blockvector
*bv
= BLOCKVECTOR (s
);
4723 /* Just reallocate it and fix references to the old one */
4725 new = (struct block
*) xrealloc ((void *) b
,
4726 (sizeof (struct block
)
4727 + ((BLOCK_NSYMS (b
) - 1)
4728 * sizeof (struct symbol
*))));
4730 /* Should chase pointers to old one. Fortunately, that`s just
4731 the block`s function and inferior blocks */
4732 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4733 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4734 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4735 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4736 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4737 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4738 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4742 /* Create a new symbol with printname NAME */
4744 static struct symbol
*
4745 new_symbol (char *name
)
4747 struct symbol
*s
= ((struct symbol
*)
4748 obstack_alloc (¤t_objfile
->symbol_obstack
,
4749 sizeof (struct symbol
)));
4751 memset (s
, 0, sizeof (*s
));
4752 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4753 ¤t_objfile
->symbol_obstack
);
4754 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4755 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4759 /* Create a new type with printname NAME */
4761 static struct type
*
4762 new_type (char *name
)
4766 t
= alloc_type (current_objfile
);
4767 TYPE_NAME (t
) = name
;
4768 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4772 /* Read ECOFF debugging information from a BFD section. This is
4773 called from elfread.c. It parses the section into a
4774 ecoff_debug_info struct, and then lets the rest of the file handle
4778 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4779 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4781 bfd
*abfd
= objfile
->obfd
;
4782 struct ecoff_debug_info
*info
;
4784 info
= ((struct ecoff_debug_info
*)
4785 obstack_alloc (&objfile
->psymbol_obstack
,
4786 sizeof (struct ecoff_debug_info
)));
4788 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4789 error ("Error reading ECOFF debugging information: %s",
4790 bfd_errmsg (bfd_get_error ()));
4792 mdebug_build_psymtabs (objfile
, swap
, info
);
4796 /* Things used for calling functions in the inferior.
4797 These functions are exported to our companion
4798 mips-tdep.c file and are here because they play
4799 with the symbol-table explicitly. */
4801 /* Sigtramp: make sure we have all the necessary information
4802 about the signal trampoline code. Since the official code
4803 from MIPS does not do so, we make up that information ourselves.
4804 If they fix the library (unlikely) this code will neutralize itself. */
4806 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4807 here because it calls functions defined in this file, but perhaps
4808 this could be handled in a better way. Only compile it in when
4809 tm-mips.h is included. */
4814 fixup_sigtramp (void)
4818 struct block
*b
, *b0
= NULL
;
4820 sigtramp_address
= -1;
4822 /* We have to handle the following cases here:
4823 a) The Mips library has a sigtramp label within sigvec.
4824 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4825 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4828 b0
= SYMBOL_BLOCK_VALUE (s
);
4829 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4833 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4834 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4837 /* But maybe this program uses its own version of sigvec */
4841 /* Did we or MIPSco fix the library ? */
4842 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4844 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4845 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4849 sigtramp_address
= SYMBOL_VALUE (s
);
4850 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4852 /* But what symtab does it live in ? */
4853 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4856 * Ok, there goes the fix: turn it into a procedure, with all the
4857 * needed info. Note we make it a nested procedure of sigvec,
4858 * which is the way the (assembly) code is actually written.
4860 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4861 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4862 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4864 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4866 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4868 SYMBOL_BLOCK_VALUE (s
) = b
;
4869 BLOCK_START (b
) = sigtramp_address
;
4870 BLOCK_END (b
) = sigtramp_end
;
4871 BLOCK_FUNCTION (b
) = s
;
4872 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4876 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4878 struct mips_extra_func_info
*e
=
4879 ((struct mips_extra_func_info
*)
4880 xzalloc (sizeof (struct mips_extra_func_info
)));
4882 e
->numargs
= 0; /* the kernel thinks otherwise */
4883 e
->pdr
.frameoffset
= 32;
4884 e
->pdr
.framereg
= SP_REGNUM
;
4885 /* Note that setting pcreg is no longer strictly necessary as
4886 mips_frame_saved_pc is now aware of signal handler frames. */
4887 e
->pdr
.pcreg
= PC_REGNUM
;
4888 e
->pdr
.regmask
= -2;
4889 /* Offset to saved r31, in the sigtramp case the saved registers
4890 are above the frame in the sigcontext.
4891 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4892 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4893 and 32 * 4 bytes for the floating point registers. */
4894 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4895 e
->pdr
.fregmask
= -1;
4896 /* Offset to saved f30 (first saved *double* register). */
4897 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4898 e
->pdr
.isym
= (long) s
;
4899 e
->pdr
.adr
= sigtramp_address
;
4901 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4902 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4903 SYMBOL_VALUE (s
) = (long) e
;
4904 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4905 SYMBOL_CLASS (s
) = LOC_CONST
;
4906 SYMBOL_TYPE (s
) = mdebug_type_void
;
4907 current_objfile
= NULL
;
4910 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4913 #endif /* TM_MIPS_H */
4916 _initialize_mdebugread (void)
4919 init_type (TYPE_CODE_VOID
, 1,
4921 "void", (struct objfile
*) NULL
);
4923 init_type (TYPE_CODE_INT
, 1,
4925 "char", (struct objfile
*) NULL
);
4926 mdebug_type_unsigned_char
=
4927 init_type (TYPE_CODE_INT
, 1,
4929 "unsigned char", (struct objfile
*) NULL
);
4931 init_type (TYPE_CODE_INT
, 2,
4933 "short", (struct objfile
*) NULL
);
4934 mdebug_type_unsigned_short
=
4935 init_type (TYPE_CODE_INT
, 2,
4937 "unsigned short", (struct objfile
*) NULL
);
4938 mdebug_type_int_32
=
4939 init_type (TYPE_CODE_INT
, 4,
4941 "int", (struct objfile
*) NULL
);
4942 mdebug_type_unsigned_int_32
=
4943 init_type (TYPE_CODE_INT
, 4,
4945 "unsigned int", (struct objfile
*) NULL
);
4946 mdebug_type_int_64
=
4947 init_type (TYPE_CODE_INT
, 8,
4949 "int", (struct objfile
*) NULL
);
4950 mdebug_type_unsigned_int_64
=
4951 init_type (TYPE_CODE_INT
, 8,
4953 "unsigned int", (struct objfile
*) NULL
);
4954 mdebug_type_long_32
=
4955 init_type (TYPE_CODE_INT
, 4,
4957 "long", (struct objfile
*) NULL
);
4958 mdebug_type_unsigned_long_32
=
4959 init_type (TYPE_CODE_INT
, 4,
4961 "unsigned long", (struct objfile
*) NULL
);
4962 mdebug_type_long_64
=
4963 init_type (TYPE_CODE_INT
, 8,
4965 "long", (struct objfile
*) NULL
);
4966 mdebug_type_unsigned_long_64
=
4967 init_type (TYPE_CODE_INT
, 8,
4969 "unsigned long", (struct objfile
*) NULL
);
4970 mdebug_type_long_long_64
=
4971 init_type (TYPE_CODE_INT
, 8,
4973 "long long", (struct objfile
*) NULL
);
4974 mdebug_type_unsigned_long_long_64
=
4975 init_type (TYPE_CODE_INT
, 8,
4977 "unsigned long long", (struct objfile
*) NULL
);
4978 mdebug_type_adr_32
=
4979 init_type (TYPE_CODE_PTR
, 4,
4981 "adr_32", (struct objfile
*) NULL
);
4982 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4983 mdebug_type_adr_64
=
4984 init_type (TYPE_CODE_PTR
, 8,
4986 "adr_64", (struct objfile
*) NULL
);
4987 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4989 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4991 "float", (struct objfile
*) NULL
);
4992 mdebug_type_double
=
4993 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4995 "double", (struct objfile
*) NULL
);
4996 mdebug_type_complex
=
4997 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4999 "complex", (struct objfile
*) NULL
);
5000 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
5001 mdebug_type_double_complex
=
5002 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5004 "double complex", (struct objfile
*) NULL
);
5005 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
5007 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5009 mdebug_type_string
=
5010 init_type (TYPE_CODE_STRING
,
5011 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
5013 (struct objfile
*) NULL
);
5015 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5016 good? Would we be better off with TYPE_CODE_ERROR? Should
5017 TYPE_CODE_ERROR print things in hex if it knows the size? */
5018 mdebug_type_fixed_dec
=
5019 init_type (TYPE_CODE_INT
,
5020 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
5022 (struct objfile
*) NULL
);
5024 mdebug_type_float_dec
=
5025 init_type (TYPE_CODE_ERROR
,
5026 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5027 0, "floating decimal",
5028 (struct objfile
*) NULL
);
5030 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5031 "<function, no debug info>", NULL
);
5032 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5033 nodebug_var_symbol_type
=
5034 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5035 "<variable, no debug info>", NULL
);