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"
55 #include "gdb_assert.h"
57 /* These are needed if the tm.h file does not contain the necessary
58 mips specific definitions. */
60 #ifndef MIPS_EFI_SYMBOL_NAME
61 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
62 extern void ecoff_relocate_efi (struct symbol
*, CORE_ADDR
);
64 #include "coff/symconst.h"
65 typedef struct mips_extra_func_info
70 *mips_extra_func_info_t
;
77 #include <sys/types.h>
81 #include "gdb_string.h"
85 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
87 #include "libaout.h" /* Private BFD a.out information. */
88 #include "aout/aout64.h"
89 #include "aout/stab_gnu.h" /* STABS information */
91 #include "expression.h"
92 #include "language.h" /* For local_hex_string() */
94 extern void _initialize_mdebugread (void);
96 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
97 We use this define in order to know whether we should override a
98 symbol's ECOFF section with its ELF section. This is necessary in
99 case the symbol's ELF section could not be represented in ECOFF. */
100 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
101 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
104 /* We put a pointer to this structure in the read_symtab_private field
109 /* Our running best guess as to the range of text addresses for
110 this psymtab. After we've read everything in, we use this to
111 build pst->text_addrs. */
112 CORE_ADDR textlow
, texthigh
;
114 /* Index of the FDR that this psymtab represents. */
116 /* The BFD that the psymtab was created from. */
118 const struct ecoff_debug_swap
*debug_swap
;
119 struct ecoff_debug_info
*debug_info
;
120 struct mdebug_pending
**pending_list
;
121 /* Pointer to external symbols for this file. */
123 /* Size of extern_tab. */
125 enum language pst_language
;
128 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
129 #define TEXTLOW(p) (PST_PRIVATE(p)->textlow)
130 #define TEXTHIGH(p) (PST_PRIVATE(p)->texthigh)
131 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
132 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
133 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
134 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
135 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
137 #define SC_IS_TEXT(sc) ((sc) == scText \
138 || (sc) == scRConst \
141 #define SC_IS_DATA(sc) ((sc) == scData \
146 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
147 #define SC_IS_BSS(sc) ((sc) == scBss)
148 #define SC_IS_SBSS(sc) ((sc) == scSBss)
149 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
151 /* Various complaints about symbol reading that don't abort the process */
153 static struct complaint bad_file_number_complaint
=
154 {"bad file number %d", 0, 0};
156 static struct complaint index_complaint
=
157 {"bad aux index at symbol %s", 0, 0};
159 static struct complaint aux_index_complaint
=
160 {"bad proc end in aux found from symbol %s", 0, 0};
162 static struct complaint block_index_complaint
=
163 {"bad aux index at block symbol %s", 0, 0};
165 static struct complaint unknown_ext_complaint
=
166 {"unknown external symbol %s", 0, 0};
168 static struct complaint unknown_sym_complaint
=
169 {"unknown local symbol %s", 0, 0};
171 static struct complaint unknown_st_complaint
=
172 {"with type %d", 0, 0};
174 static struct complaint block_overflow_complaint
=
175 {"block containing %s overfilled", 0, 0};
177 static struct complaint basic_type_complaint
=
178 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
180 static struct complaint unknown_type_qual_complaint
=
181 {"unknown type qualifier 0x%x", 0, 0};
183 static struct complaint array_index_type_complaint
=
184 {"illegal array index type for %s, assuming int", 0, 0};
186 static struct complaint bad_tag_guess_complaint
=
187 {"guessed tag type of %s incorrectly", 0, 0};
189 static struct complaint block_member_complaint
=
190 {"declaration block contains unhandled symbol type %d", 0, 0};
192 static struct complaint stEnd_complaint
=
193 {"stEnd with storage class %d not handled", 0, 0};
195 static struct complaint unknown_mdebug_symtype_complaint
=
196 {"unknown symbol type 0x%x", 0, 0};
198 static struct complaint stab_unknown_complaint
=
199 {"unknown stabs symbol %s", 0, 0};
201 static struct complaint pdr_for_nonsymbol_complaint
=
202 {"PDR for %s, but no symbol", 0, 0};
204 static struct complaint pdr_static_symbol_complaint
=
205 {"can't handle PDR for static proc at 0x%lx", 0, 0};
207 static struct complaint bad_setjmp_pdr_complaint
=
208 {"fixing bad setjmp PDR from libc", 0, 0};
210 static struct complaint bad_fbitfield_complaint
=
211 {"can't handle TIR fBitfield for %s", 0, 0};
213 static struct complaint bad_continued_complaint
=
214 {"illegal TIR continued for %s", 0, 0};
216 static struct complaint bad_rfd_entry_complaint
=
217 {"bad rfd entry for %s: file %d, index %d", 0, 0};
219 static struct complaint unexpected_type_code_complaint
=
220 {"unexpected type code for %s", 0, 0};
222 static struct complaint unable_to_cross_ref_complaint
=
223 {"unable to cross ref btTypedef for %s", 0, 0};
225 static struct complaint bad_indirect_xref_complaint
=
226 {"unable to cross ref btIndirect for %s", 0, 0};
228 static struct complaint illegal_forward_tq0_complaint
=
229 {"illegal tq0 in forward typedef for %s", 0, 0};
231 static struct complaint illegal_forward_bt_complaint
=
232 {"illegal bt %d in forward typedef for %s", 0, 0};
234 static struct complaint bad_linetable_guess_complaint
=
235 {"guessed size of linetable for %s incorrectly", 0, 0};
237 static struct complaint bad_ext_ifd_complaint
=
238 {"bad ifd for external symbol: %d (max %d)", 0, 0};
240 static struct complaint bad_ext_iss_complaint
=
241 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
243 /* Macros and extra defs */
245 /* Puns: hard to find whether -g was used and how */
247 #define MIN_GLEVEL GLEVEL_0
248 #define compare_glevel(a,b) \
249 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
250 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
252 /* Things that really are local to this module */
254 /* Remember what we deduced to be the source language of this psymtab. */
256 static enum language psymtab_language
= language_unknown
;
262 /* How to parse debugging information for CUR_BFD. */
264 static const struct ecoff_debug_swap
*debug_swap
;
266 /* Pointers to debugging information for CUR_BFD. */
268 static struct ecoff_debug_info
*debug_info
;
270 /* Pointer to current file decriptor record, and its index */
275 /* Index of current symbol */
279 /* Note how much "debuggable" this image is. We would like
280 to see at least one FDR with full symbols */
282 static int max_gdbinfo
;
283 static int max_glevel
;
285 /* When examining .o files, report on undefined symbols */
287 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
289 /* Pseudo symbol to use when putting stabs into the symbol table. */
291 static char stabs_symbol
[] = STABS_SYMBOL
;
293 /* Types corresponding to mdebug format bt* basic types. */
295 static struct type
*mdebug_type_void
;
296 static struct type
*mdebug_type_char
;
297 static struct type
*mdebug_type_short
;
298 static struct type
*mdebug_type_int_32
;
299 #define mdebug_type_int mdebug_type_int_32
300 static struct type
*mdebug_type_int_64
;
301 static struct type
*mdebug_type_long_32
;
302 static struct type
*mdebug_type_long_64
;
303 static struct type
*mdebug_type_long_long_64
;
304 static struct type
*mdebug_type_unsigned_char
;
305 static struct type
*mdebug_type_unsigned_short
;
306 static struct type
*mdebug_type_unsigned_int_32
;
307 static struct type
*mdebug_type_unsigned_int_64
;
308 static struct type
*mdebug_type_unsigned_long_32
;
309 static struct type
*mdebug_type_unsigned_long_64
;
310 static struct type
*mdebug_type_unsigned_long_long_64
;
311 static struct type
*mdebug_type_adr_32
;
312 static struct type
*mdebug_type_adr_64
;
313 static struct type
*mdebug_type_float
;
314 static struct type
*mdebug_type_double
;
315 static struct type
*mdebug_type_complex
;
316 static struct type
*mdebug_type_double_complex
;
317 static struct type
*mdebug_type_fixed_dec
;
318 static struct type
*mdebug_type_float_dec
;
319 static struct type
*mdebug_type_string
;
321 /* Types for symbols from files compiled without debugging info. */
323 static struct type
*nodebug_func_symbol_type
;
324 static struct type
*nodebug_var_symbol_type
;
326 /* Nonzero if we have seen ecoff debugging info for a file. */
328 static int found_ecoff_debugging_info
;
330 /* Forward declarations */
332 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
335 static void parse_partial_symbols (struct objfile
*);
337 static int has_opaque_xref (FDR
*, SYMR
*);
339 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
340 char **, int, char *);
342 static struct symbol
*new_symbol (char *);
344 static struct type
*new_type (char *);
346 static struct block
*new_block (int);
348 static struct symtab
*new_symtab (char *, int, int, struct objfile
*);
350 static struct linetable
*new_linetable (int);
352 static struct blockvector
*new_bvect (int);
354 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
357 static struct symbol
*mylookup_symbol (char *, struct block
*, namespace_enum
,
360 static struct block
*shrink_block (struct block
*, struct symtab
*);
362 static void sort_blocks (struct symtab
*);
364 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
366 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
368 static void add_block (struct block
*, struct symtab
*);
370 static void add_symbol (struct symbol
*, struct block
*);
372 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
374 static struct linetable
*shrink_linetable (struct linetable
*);
376 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
379 static char *mdebug_next_symbol_text (struct objfile
*);
381 /* Address bounds for the signal trampoline in inferior, if any */
383 CORE_ADDR sigtramp_address
, sigtramp_end
;
385 /* Allocate zeroed memory */
388 xzalloc (unsigned int size
)
390 void *p
= xmalloc (size
);
396 /* Exported procedure: Builds a symtab from the PST partial one.
397 Restores the environment in effect when PST was created, delegates
398 most of the work to an ancillary procedure, and sorts
399 and reorders the symtab list at the end */
402 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
410 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
411 gdb_flush (gdb_stdout
);
414 next_symbol_text_func
= mdebug_next_symbol_text
;
416 psymtab_to_symtab_1 (pst
, pst
->filename
);
418 /* Match with global symbols. This only needs to be done once,
419 after all of the symtabs and dependencies have been read in. */
420 scan_file_globals (pst
->objfile
);
423 printf_filtered ("done.\n");
426 /* File-level interface functions */
428 /* Find a file descriptor given its index RF relative to a file CF */
431 get_rfd (int cf
, int rf
)
437 fdrs
= debug_info
->fdr
;
439 /* Object files do not have the RFD table, all refs are absolute */
442 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
443 ((char *) debug_info
->external_rfd
445 * debug_swap
->external_rfd_size
)),
450 /* Return a safer print NAME for a file descriptor */
456 return "<stripped file>";
459 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
463 /* Read in and parse the symtab of the file OBJFILE. Symbols from
464 different sections are relocated via the SECTION_OFFSETS. */
467 mdebug_build_psymtabs (struct objfile
*objfile
,
468 const struct ecoff_debug_swap
*swap
,
469 struct ecoff_debug_info
*info
)
471 cur_bfd
= objfile
->obfd
;
475 stabsread_new_init ();
476 buildsym_new_init ();
477 free_header_files ();
478 init_header_files ();
480 /* Make sure all the FDR information is swapped in. */
481 if (info
->fdr
== (FDR
*) NULL
)
487 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
488 (info
->symbolic_header
.ifdMax
490 fdr_src
= info
->external_fdr
;
492 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
494 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
495 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
498 parse_partial_symbols (objfile
);
500 /* Take the text ranges the partial symbol scanner computed for each
501 of the psymtabs and convert it into the canonical form for
504 struct partial_symtab
*p
;
506 ALL_OBJFILE_PSYMTABS (objfile
, p
)
508 p
->textlow
= TEXTLOW (p
);
509 p
->texthigh
= TEXTHIGH (p
);
514 /* Check to make sure file was compiled with -g. If not, warn the
515 user of this limitation. */
516 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
518 if (max_gdbinfo
== 0)
519 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
521 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
522 gdb_flush (gdb_stdout
);
527 /* Local utilities */
529 /* Map of FDR indexes to partial symtabs */
533 struct partial_symtab
*pst
; /* the psymtab proper */
534 long n_globals
; /* exported globals (external symbols) */
535 long globals_offset
; /* cumulative */
539 /* Utility stack, used to nest procedures and blocks properly.
540 It is a doubly linked list, to avoid too many alloc/free.
541 Since we might need it quite a few times it is NOT deallocated
544 static struct parse_stack
546 struct parse_stack
*next
, *prev
;
547 struct symtab
*cur_st
; /* Current symtab. */
548 struct block
*cur_block
; /* Block in it. */
550 /* What are we parsing. stFile, or stBlock are for files and
551 blocks. stProc or stStaticProc means we have seen the start of a
552 procedure, but not the start of the block within in. When we see
553 the start of that block, we change it to stNil, without pushing a
554 new block, i.e. stNil means both a procedure and a block. */
558 int maxsyms
; /* Max symbols in this block. */
559 struct type
*cur_type
; /* Type we parse fields for. */
560 int cur_field
; /* Field number in cur_type. */
561 CORE_ADDR procadr
; /* Start addres of this procedure */
562 int numargs
; /* Its argument count */
565 *top_stack
; /* Top stack ptr */
568 /* Enter a new lexical context */
571 push_parse_stack (void)
573 struct parse_stack
*new;
575 /* Reuse frames if possible */
576 if (top_stack
&& top_stack
->prev
)
577 new = top_stack
->prev
;
579 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
580 /* Initialize new frame with previous content */
583 register struct parse_stack
*prev
= new->prev
;
586 top_stack
->prev
= new;
588 new->next
= top_stack
;
593 /* Exit a lexical context */
596 pop_parse_stack (void)
601 top_stack
= top_stack
->next
;
605 /* Cross-references might be to things we haven't looked at
606 yet, e.g. type references. To avoid too many type
607 duplications we keep a quick fixup table, an array
608 of lists of references indexed by file descriptor */
610 struct mdebug_pending
612 struct mdebug_pending
*next
; /* link */
613 char *s
; /* the unswapped symbol */
614 struct type
*t
; /* its partial type descriptor */
618 /* The pending information is kept for an entire object file, and used
619 to be in the sym_private field. I took it out when I split
620 mdebugread from mipsread, because this might not be the only type
621 of symbols read from an object file. Instead, we allocate the
622 pending information table when we create the partial symbols, and
623 we store a pointer to the single table in each psymtab. */
625 static struct mdebug_pending
**pending_list
;
627 /* Check whether we already saw symbol SH in file FH */
629 static struct mdebug_pending
*
630 is_pending_symbol (FDR
*fh
, char *sh
)
632 int f_idx
= fh
- debug_info
->fdr
;
633 register struct mdebug_pending
*p
;
635 /* Linear search is ok, list is typically no more than 10 deep */
636 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
642 /* Add a new symbol SH of type T */
645 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
647 int f_idx
= fh
- debug_info
->fdr
;
648 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
650 /* Make sure we do not make duplicates */
653 p
= ((struct mdebug_pending
*)
654 obstack_alloc (¤t_objfile
->psymbol_obstack
,
655 sizeof (struct mdebug_pending
)));
658 p
->next
= pending_list
[f_idx
];
659 pending_list
[f_idx
] = p
;
664 /* Parsing Routines proper. */
666 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
667 For blocks, procedures and types we open a new lexical context.
668 This is basically just a big switch on the symbol's type. Argument
669 AX is the base pointer of aux symbols for this file (fh->iauxBase).
670 EXT_SH points to the unswapped symbol, which is needed for struct,
671 union, etc., types; it is NULL for an EXTR. BIGEND says whether
672 aux symbols are big-endian or little-endian. Return count of
673 SYMR's handled (normally one). */
676 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
677 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
679 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
680 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
684 struct mdebug_pending
*pend
;
688 enum address_class
class;
690 long svalue
= sh
->value
;
693 if (ext_sh
== (char *) NULL
)
694 name
= debug_info
->ssext
+ sh
->iss
;
696 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
702 /* Do not relocate relative values.
703 The value of a stEnd symbol is the displacement from the
704 corresponding start symbol value.
705 The value of a stBlock symbol is the displacement from the
706 procedure address. */
707 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
708 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
715 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
719 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
728 case stGlobal
: /* external symbol, goes into global block */
730 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
732 s
= new_symbol (name
);
733 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
736 case stStatic
: /* static data, goes into current block. */
738 b
= top_stack
->cur_block
;
739 s
= new_symbol (name
);
740 if (SC_IS_COMMON (sh
->sc
))
742 /* It is a FORTRAN common block. At least for SGI Fortran the
743 address is not in the symbol; we need to fix it later in
744 scan_file_globals. */
745 int bucket
= hashname (SYMBOL_NAME (s
));
746 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
747 global_sym_chain
[bucket
] = s
;
750 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
753 case stLocal
: /* local variable, goes into current block */
754 if (sh
->sc
== scRegister
)
756 class = LOC_REGISTER
;
757 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
761 b
= top_stack
->cur_block
;
762 s
= new_symbol (name
);
763 SYMBOL_VALUE (s
) = svalue
;
765 data
: /* Common code for symbols describing data */
766 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
767 SYMBOL_CLASS (s
) = class;
770 /* Type could be missing if file is compiled without debugging info. */
771 if (SC_IS_UNDEF (sh
->sc
)
772 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
773 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
775 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
776 /* Value of a data symbol is its memory address */
779 case stParam
: /* arg to procedure, goes into current block */
781 found_ecoff_debugging_info
= 1;
782 top_stack
->numargs
++;
784 /* Special GNU C++ name. */
785 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
786 name
= "this"; /* FIXME, not alloc'd in obstack */
787 s
= new_symbol (name
);
789 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
793 /* Pass by value in register. */
794 SYMBOL_CLASS (s
) = LOC_REGPARM
;
795 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
798 /* Pass by reference on stack. */
799 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
802 /* Pass by reference in register. */
803 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
804 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
807 /* Pass by value on stack. */
808 SYMBOL_CLASS (s
) = LOC_ARG
;
811 SYMBOL_VALUE (s
) = svalue
;
812 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
813 add_symbol (s
, top_stack
->cur_block
);
816 case stLabel
: /* label, goes into current block */
817 s
= new_symbol (name
);
818 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
819 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
820 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
821 SYMBOL_TYPE (s
) = mdebug_type_int
;
822 add_symbol (s
, top_stack
->cur_block
);
825 case stProc
: /* Procedure, usually goes into global block */
826 case stStaticProc
: /* Static procedure, goes into current block */
827 s
= new_symbol (name
);
828 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
829 SYMBOL_CLASS (s
) = LOC_BLOCK
;
830 /* Type of the return value */
831 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
835 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
836 if (STREQ (name
, "malloc") && TYPE_CODE (t
) == TYPE_CODE_VOID
)
838 /* I don't know why, but, at least under Alpha GNU/Linux,
839 when linking against a malloc without debugging
840 symbols, its read as a function returning void---this
841 is bad because it means we cannot call functions with
842 string arguments interactively; i.e., "call
843 printf("howdy\n")" would fail with the error message
844 "program has no memory available". To avoid this, we
845 patch up the type and make it void*
846 instead. (davidm@azstarnet.com)
848 t
= make_pointer_type (t
, NULL
);
851 b
= top_stack
->cur_block
;
852 if (sh
->st
== stProc
)
854 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
855 /* The next test should normally be true, but provides a
856 hook for nested functions (which we don't want to make
858 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
859 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
860 /* Irix 5 sometimes has duplicate names for the same
861 function. We want to add such names up at the global
862 level, not as a nested function. */
863 else if (sh
->value
== top_stack
->procadr
)
864 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
868 /* Make a type for the procedure itself */
869 SYMBOL_TYPE (s
) = lookup_function_type (t
);
871 /* Create and enter a new lexical context */
872 b
= new_block (top_stack
->maxsyms
);
873 SYMBOL_BLOCK_VALUE (s
) = b
;
874 BLOCK_FUNCTION (b
) = s
;
875 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
876 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
877 add_block (b
, top_stack
->cur_st
);
879 /* Not if we only have partial info */
880 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
884 top_stack
->cur_block
= b
;
885 top_stack
->blocktype
= sh
->st
;
886 top_stack
->cur_type
= SYMBOL_TYPE (s
);
887 top_stack
->cur_field
= -1;
888 top_stack
->procadr
= sh
->value
;
889 top_stack
->numargs
= 0;
892 /* Beginning of code for structure, union, and enum definitions.
893 They all share a common set of local variables, defined here. */
895 enum type_code type_code
;
901 case stStruct
: /* Start a block defining a struct type */
902 type_code
= TYPE_CODE_STRUCT
;
903 goto structured_common
;
905 case stUnion
: /* Start a block defining a union type */
906 type_code
= TYPE_CODE_UNION
;
907 goto structured_common
;
909 case stEnum
: /* Start a block defining an enum type */
910 type_code
= TYPE_CODE_ENUM
;
911 goto structured_common
;
913 case stBlock
: /* Either a lexical block, or some type */
914 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
915 goto case_stBlock_code
; /* Lexical block */
917 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
919 /* Common code for handling struct, union, enum, and/or as-yet-
920 unknown-type blocks of info about structured data. `type_code'
921 has been set to the proper TYPE_CODE, if we know it. */
923 found_ecoff_debugging_info
= 1;
925 top_stack
->blocktype
= stBlock
;
927 /* First count the number of fields and the highest value. */
930 for (ext_tsym
= ext_sh
+ external_sym_size
;
932 ext_tsym
+= external_sym_size
)
936 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
944 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
946 /* If the type of the member is Nil (or Void),
947 without qualifiers, assume the tag is an
949 Alpha cc -migrate enums are recognized by a zero
950 index and a zero symbol value.
951 DU 4.0 cc enums are recognized by a member type of
952 btEnum without qualifiers and a zero symbol value. */
953 if (tsym
.index
== indexNil
954 || (tsym
.index
== 0 && sh
->value
== 0))
955 type_code
= TYPE_CODE_ENUM
;
958 (*debug_swap
->swap_tir_in
) (bigend
,
959 &ax
[tsym
.index
].a_ti
,
961 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
962 || (tir
.bt
== btEnum
&& sh
->value
== 0))
964 type_code
= TYPE_CODE_ENUM
;
968 if (tsym
.value
> max_value
)
969 max_value
= tsym
.value
;
978 /* This is a no-op; is it trying to tell us something
979 we should be checking? */
980 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
984 /* This is something like a struct within a
985 struct. Skip over the fields of the inner
986 struct. The -1 is because the for loop will
987 increment ext_tsym. */
988 ext_tsym
= ((char *) debug_info
->external_sym
989 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
990 * external_sym_size
));
996 /* mips cc puts out a typedef for struct x if it is not yet
997 defined when it encounters
998 struct y { struct x *xp; };
1003 /* Irix5 cc puts out a stIndirect for struct x if it is not
1004 yet defined when it encounters
1005 struct y { struct x *xp; };
1010 complain (&block_member_complaint
, tsym
.st
);
1015 /* In an stBlock, there is no way to distinguish structs,
1016 unions, and enums at this point. This is a bug in the
1017 original design (that has been fixed with the recent
1018 addition of the stStruct, stUnion, and stEnum symbol
1019 types.) The way you can tell is if/when you see a variable
1020 or field of that type. In that case the variable's type
1021 (in the AUX table) says if the type is struct, union, or
1022 enum, and points back to the stBlock here. So you can
1023 patch the tag kind up later - but only if there actually is
1024 a variable or field of that type.
1026 So until we know for sure, we will guess at this point.
1028 If the first member has index==indexNil or a void type,
1029 assume we have an enumeration.
1030 Otherwise, if there is more than one member, and all
1031 the members have offset 0, assume we have a union.
1032 Otherwise, assume we have a struct.
1034 The heuristic could guess wrong in the case of of an
1035 enumeration with no members or a union with one (or zero)
1036 members, or when all except the last field of a struct have
1037 width zero. These are uncommon and/or illegal situations,
1038 and in any case guessing wrong probably doesn't matter
1041 But if we later do find out we were wrong, we fixup the tag
1042 kind. Members of an enumeration must be handled
1043 differently from struct/union fields, and that is harder to
1044 patch up, but luckily we shouldn't need to. (If there are
1045 any enumeration members, we can tell for sure it's an enum
1048 if (type_code
== TYPE_CODE_UNDEF
)
1050 if (nfields
> 1 && max_value
== 0)
1051 type_code
= TYPE_CODE_UNION
;
1053 type_code
= TYPE_CODE_STRUCT
;
1056 /* Create a new type or use the pending type. */
1057 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1058 if (pend
== (struct mdebug_pending
*) NULL
)
1060 t
= new_type (NULL
);
1061 add_pending (cur_fdr
, ext_sh
, t
);
1066 /* Do not set the tag name if it is a compiler generated tag name
1067 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1068 Alpha cc puts out an sh->iss of zero for those. */
1069 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1070 TYPE_TAG_NAME (t
) = NULL
;
1072 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1075 TYPE_CODE (t
) = type_code
;
1076 TYPE_LENGTH (t
) = sh
->value
;
1077 TYPE_NFIELDS (t
) = nfields
;
1078 TYPE_FIELDS (t
) = f
= ((struct field
*)
1080 nfields
* sizeof (struct field
)));
1082 if (type_code
== TYPE_CODE_ENUM
)
1084 int unsigned_enum
= 1;
1086 /* This is a non-empty enum. */
1088 /* DEC c89 has the number of enumerators in the sh.value field,
1089 not the type length, so we have to compensate for that
1090 incompatibility quirk.
1091 This might do the wrong thing for an enum with one or two
1092 enumerators and gcc -gcoff -fshort-enums, but these cases
1093 are hopefully rare enough.
1094 Alpha cc -migrate has a sh.value field of zero, we adjust
1096 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1097 || TYPE_LENGTH (t
) == 0)
1098 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1099 for (ext_tsym
= ext_sh
+ external_sym_size
;
1101 ext_tsym
+= external_sym_size
)
1104 struct symbol
*enum_sym
;
1106 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1108 if (tsym
.st
!= stMember
)
1111 FIELD_BITPOS (*f
) = tsym
.value
;
1112 FIELD_TYPE (*f
) = t
;
1113 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1114 FIELD_BITSIZE (*f
) = 0;
1116 enum_sym
= ((struct symbol
*)
1117 obstack_alloc (¤t_objfile
->symbol_obstack
,
1118 sizeof (struct symbol
)));
1119 memset (enum_sym
, 0, sizeof (struct symbol
));
1120 SYMBOL_NAME (enum_sym
) =
1121 obsavestring (f
->name
, strlen (f
->name
),
1122 ¤t_objfile
->symbol_obstack
);
1123 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1124 SYMBOL_TYPE (enum_sym
) = t
;
1125 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1126 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1127 if (SYMBOL_VALUE (enum_sym
) < 0)
1129 add_symbol (enum_sym
, top_stack
->cur_block
);
1131 /* Skip the stMembers that we've handled. */
1136 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1138 /* make this the current type */
1139 top_stack
->cur_type
= t
;
1140 top_stack
->cur_field
= 0;
1142 /* Do not create a symbol for alpha cc unnamed structs. */
1146 /* gcc puts out an empty struct for an opaque struct definitions,
1147 do not create a symbol for it either. */
1148 if (TYPE_NFIELDS (t
) == 0)
1150 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1154 s
= new_symbol (name
);
1155 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1156 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1157 SYMBOL_VALUE (s
) = 0;
1158 SYMBOL_TYPE (s
) = t
;
1159 add_symbol (s
, top_stack
->cur_block
);
1162 /* End of local variables shared by struct, union, enum, and
1163 block (as yet unknown struct/union/enum) processing. */
1167 found_ecoff_debugging_info
= 1;
1168 /* beginnning of (code) block. Value of symbol
1169 is the displacement from procedure start */
1170 push_parse_stack ();
1172 /* Do not start a new block if this is the outermost block of a
1173 procedure. This allows the LOC_BLOCK symbol to point to the
1174 block with the local variables, so funcname::var works. */
1175 if (top_stack
->blocktype
== stProc
1176 || top_stack
->blocktype
== stStaticProc
)
1178 top_stack
->blocktype
= stNil
;
1182 top_stack
->blocktype
= stBlock
;
1183 b
= new_block (top_stack
->maxsyms
);
1184 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1185 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1186 top_stack
->cur_block
= b
;
1187 add_block (b
, top_stack
->cur_st
);
1190 case stEnd
: /* end (of anything) */
1191 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1193 /* Finished with type */
1194 top_stack
->cur_type
= 0;
1196 else if (sh
->sc
== scText
&&
1197 (top_stack
->blocktype
== stProc
||
1198 top_stack
->blocktype
== stStaticProc
))
1200 /* Finished with procedure */
1201 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1202 struct mips_extra_func_info
*e
;
1204 struct type
*ftype
= top_stack
->cur_type
;
1207 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1209 /* Make up special symbol to contain procedure specific info */
1210 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1211 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1212 SYMBOL_CLASS (s
) = LOC_CONST
;
1213 SYMBOL_TYPE (s
) = mdebug_type_void
;
1214 e
= ((struct mips_extra_func_info
*)
1215 obstack_alloc (¤t_objfile
->symbol_obstack
,
1216 sizeof (struct mips_extra_func_info
)));
1217 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1218 SYMBOL_VALUE (s
) = (long) e
;
1219 e
->numargs
= top_stack
->numargs
;
1220 e
->pdr
.framereg
= -1;
1221 add_symbol (s
, top_stack
->cur_block
);
1223 /* Reallocate symbols, saving memory */
1224 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1226 /* f77 emits proc-level with address bounds==[0,0],
1227 So look for such child blocks, and patch them. */
1228 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1230 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1231 if (BLOCK_SUPERBLOCK (b_bad
) == b
1232 && BLOCK_START (b_bad
) == top_stack
->procadr
1233 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1235 BLOCK_START (b_bad
) = BLOCK_START (b
);
1236 BLOCK_END (b_bad
) = BLOCK_END (b
);
1240 if (TYPE_NFIELDS (ftype
) <= 0)
1242 /* No parameter type information is recorded with the function's
1243 type. Set that from the type of the parameter symbols. */
1244 int nparams
= top_stack
->numargs
;
1250 TYPE_NFIELDS (ftype
) = nparams
;
1251 TYPE_FIELDS (ftype
) = (struct field
*)
1252 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1254 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1256 sym
= BLOCK_SYM (b
, i
);
1257 switch (SYMBOL_CLASS (sym
))
1262 case LOC_REGPARM_ADDR
:
1263 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1264 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1274 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1276 /* End of (code) block. The value of the symbol is the
1277 displacement from the procedure`s start address of the
1278 end of this block. */
1279 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1280 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1282 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1284 /* End of outermost block. Pop parse stack and ignore. The
1285 following stEnd of stProc will take care of the block. */
1288 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1290 /* End of file. Pop parse stack and ignore. Higher
1291 level code deals with this. */
1295 complain (&stEnd_complaint
, sh
->sc
);
1297 pop_parse_stack (); /* restore previous lexical context */
1300 case stMember
: /* member of struct or union */
1301 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1302 FIELD_NAME (*f
) = name
;
1303 FIELD_BITPOS (*f
) = sh
->value
;
1305 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1306 FIELD_BITSIZE (*f
) = bitsize
;
1309 case stIndirect
: /* forward declaration on Irix5 */
1310 /* Forward declarations from Irix5 cc are handled by cross_ref,
1314 case stTypedef
: /* type definition */
1315 found_ecoff_debugging_info
= 1;
1317 /* Typedefs for forward declarations and opaque structs from alpha cc
1318 are handled by cross_ref, skip them. */
1322 /* Parse the type or use the pending type. */
1323 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1324 if (pend
== (struct mdebug_pending
*) NULL
)
1326 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1327 add_pending (cur_fdr
, ext_sh
, t
);
1332 /* mips cc puts out a typedef with the name of the struct for forward
1333 declarations. These should not go into the symbol table and
1334 TYPE_NAME should not be set for them.
1335 They can't be distinguished from an intentional typedef to
1336 the same name however:
1338 struct x { int ix; int jx; };
1342 struct xx {int ixx; int jxx; };
1343 generates a cross referencing stTypedef for x and xx.
1344 The user visible effect of this is that the type of a pointer
1345 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1346 The problem is fixed with alpha cc and Irix5 cc. */
1348 /* However if the typedef cross references to an opaque aggregate, it
1349 is safe to omit it from the symbol table. */
1351 if (has_opaque_xref (cur_fdr
, sh
))
1353 s
= new_symbol (name
);
1354 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1355 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1356 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1357 SYMBOL_TYPE (s
) = t
;
1358 add_symbol (s
, top_stack
->cur_block
);
1360 /* Incomplete definitions of structs should not get a name. */
1361 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1362 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1363 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1364 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1366 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1367 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1369 /* If we are giving a name to a type such as "pointer to
1370 foo" or "function returning foo", we better not set
1371 the TYPE_NAME. If the program contains "typedef char
1372 *caddr_t;", we don't want all variables of type char
1373 * to print as caddr_t. This is not just a
1374 consequence of GDB's type management; CC and GCC (at
1375 least through version 2.4) both output variables of
1376 either type char * or caddr_t with the type
1377 refering to the stTypedef symbol for caddr_t. If a future
1378 compiler cleans this up it GDB is not ready for it
1379 yet, but if it becomes ready we somehow need to
1380 disable this check (without breaking the PCC/GCC2.4
1385 Fortunately, this check seems not to be necessary
1386 for anything except pointers or functions. */
1389 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1393 case stFile
: /* file name */
1394 push_parse_stack ();
1395 top_stack
->blocktype
= sh
->st
;
1398 /* I`ve never seen these for C */
1400 break; /* register relocation */
1402 break; /* forwarding address */
1404 break; /* constant */
1406 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1413 /* Parse the type information provided in the raw AX entries for
1414 the symbol SH. Return the bitfield size in BS, in case.
1415 We must byte-swap the AX entries before we use them; BIGEND says whether
1416 they are big-endian or little-endian (from fh->fBigendian). */
1418 static struct type
*
1419 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1420 int bigend
, char *sym_name
)
1422 /* Null entries in this map are treated specially */
1423 static struct type
**map_bt
[] =
1425 &mdebug_type_void
, /* btNil */
1426 &mdebug_type_adr_32
, /* btAdr */
1427 &mdebug_type_char
, /* btChar */
1428 &mdebug_type_unsigned_char
, /* btUChar */
1429 &mdebug_type_short
, /* btShort */
1430 &mdebug_type_unsigned_short
, /* btUShort */
1431 &mdebug_type_int_32
, /* btInt */
1432 &mdebug_type_unsigned_int_32
, /* btUInt */
1433 &mdebug_type_long_32
, /* btLong */
1434 &mdebug_type_unsigned_long_32
, /* btULong */
1435 &mdebug_type_float
, /* btFloat */
1436 &mdebug_type_double
, /* btDouble */
1443 &mdebug_type_complex
, /* btComplex */
1444 &mdebug_type_double_complex
, /* btDComplex */
1446 &mdebug_type_fixed_dec
, /* btFixedDec */
1447 &mdebug_type_float_dec
, /* btFloatDec */
1448 &mdebug_type_string
, /* btString */
1451 &mdebug_type_void
, /* btVoid */
1452 0, /* DEC C++: Pointer to member */
1453 0, /* DEC C++: Virtual function table */
1454 0, /* DEC C++: Class (Record) */
1455 &mdebug_type_long_64
, /* btLong64 */
1456 &mdebug_type_unsigned_long_64
, /* btULong64 */
1457 &mdebug_type_long_long_64
, /* btLongLong64 */
1458 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1459 &mdebug_type_adr_64
, /* btAdr64 */
1460 &mdebug_type_int_64
, /* btInt64 */
1461 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1465 struct type
*tp
= 0;
1466 enum type_code type_code
= TYPE_CODE_UNDEF
;
1468 /* Handle undefined types, they have indexNil. */
1469 if (aux_index
== indexNil
)
1470 return mdebug_type_int
;
1472 /* Handle corrupt aux indices. */
1473 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1475 complain (&index_complaint
, sym_name
);
1476 return mdebug_type_int
;
1480 /* Use aux as a type information record, map its basic type. */
1481 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1482 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1484 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1485 return mdebug_type_int
;
1489 tp
= *map_bt
[t
->bt
];
1494 /* Cannot use builtin types -- build our own */
1498 type_code
= TYPE_CODE_STRUCT
;
1501 type_code
= TYPE_CODE_UNION
;
1504 type_code
= TYPE_CODE_ENUM
;
1507 type_code
= TYPE_CODE_RANGE
;
1510 type_code
= TYPE_CODE_SET
;
1513 /* alpha cc -migrate uses this for typedefs. The true type will
1514 be obtained by crossreferencing below. */
1515 type_code
= TYPE_CODE_ERROR
;
1518 /* alpha cc uses this for typedefs. The true type will be
1519 obtained by crossreferencing below. */
1520 type_code
= TYPE_CODE_ERROR
;
1523 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1524 return mdebug_type_int
;
1528 /* Move on to next aux */
1533 int width
= AUX_GET_WIDTH (bigend
, ax
);
1535 /* Inhibit core dumps with some cfront generated objects that
1537 if (bs
== (int *) NULL
)
1539 /* Alpha cc -migrate encodes char and unsigned char types
1540 as short and unsigned short types with a field width of 8.
1541 Enum types also have a field width which we ignore for now. */
1542 if (t
->bt
== btShort
&& width
== 8)
1543 tp
= mdebug_type_char
;
1544 else if (t
->bt
== btUShort
&& width
== 8)
1545 tp
= mdebug_type_unsigned_char
;
1546 else if (t
->bt
== btEnum
)
1549 complain (&bad_fbitfield_complaint
, sym_name
);
1556 /* A btIndirect entry cross references to an aux entry containing
1558 if (t
->bt
== btIndirect
)
1565 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1567 if (rn
->rfd
== 0xfff)
1569 rf
= AUX_GET_ISYM (bigend
, ax
);
1577 complain (&bad_indirect_xref_complaint
, sym_name
);
1578 return mdebug_type_int
;
1580 xref_fh
= get_rfd (fd
, rf
);
1581 xref_fd
= xref_fh
- debug_info
->fdr
;
1582 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1583 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1586 /* All these types really point to some (common) MIPS type
1587 definition, and only the type-qualifiers fully identify
1588 them. We'll make the same effort at sharing. */
1589 if (t
->bt
== btStruct
||
1593 /* btSet (I think) implies that the name is a tag name, not a typedef
1594 name. This apparently is a MIPS extension for C sets. */
1599 /* Try to cross reference this type, build new type on failure. */
1600 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1601 if (tp
== (struct type
*) NULL
)
1602 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1604 /* DEC c89 produces cross references to qualified aggregate types,
1605 dereference them. */
1606 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1607 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1608 tp
= TYPE_TARGET_TYPE (tp
);
1610 /* Make sure that TYPE_CODE(tp) has an expected type code.
1611 Any type may be returned from cross_ref if file indirect entries
1613 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1614 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1615 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1617 complain (&unexpected_type_code_complaint
, sym_name
);
1622 /* Usually, TYPE_CODE(tp) is already type_code. The main
1623 exception is if we guessed wrong re struct/union/enum.
1624 But for struct vs. union a wrong guess is harmless, so
1625 don't complain(). */
1626 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1627 && type_code
!= TYPE_CODE_ENUM
)
1628 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1629 && type_code
== TYPE_CODE_ENUM
))
1631 complain (&bad_tag_guess_complaint
, sym_name
);
1634 if (TYPE_CODE (tp
) != type_code
)
1636 TYPE_CODE (tp
) = type_code
;
1639 /* Do not set the tag name if it is a compiler generated tag name
1640 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1641 if (name
[0] == '.' || name
[0] == '\0')
1642 TYPE_TAG_NAME (tp
) = NULL
;
1643 else if (TYPE_TAG_NAME (tp
) == NULL
1644 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1645 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1646 ¤t_objfile
->type_obstack
);
1650 /* All these types really point to some (common) MIPS type
1651 definition, and only the type-qualifiers fully identify
1652 them. We'll make the same effort at sharing.
1653 FIXME: We are not doing any guessing on range types. */
1654 if (t
->bt
== btRange
)
1658 /* Try to cross reference this type, build new type on failure. */
1659 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1660 if (tp
== (struct type
*) NULL
)
1661 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1663 /* Make sure that TYPE_CODE(tp) has an expected type code.
1664 Any type may be returned from cross_ref if file indirect entries
1666 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1668 complain (&unexpected_type_code_complaint
, sym_name
);
1672 /* Usually, TYPE_CODE(tp) is already type_code. The main
1673 exception is if we guessed wrong re struct/union/enum. */
1674 if (TYPE_CODE (tp
) != type_code
)
1676 complain (&bad_tag_guess_complaint
, sym_name
);
1677 TYPE_CODE (tp
) = type_code
;
1679 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1680 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1681 ¤t_objfile
->type_obstack
);
1684 if (t
->bt
== btTypedef
)
1688 /* Try to cross reference this type, it should succeed. */
1689 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1690 if (tp
== (struct type
*) NULL
)
1692 complain (&unable_to_cross_ref_complaint
, sym_name
);
1693 tp
= mdebug_type_int
;
1697 /* Deal with range types */
1698 if (t
->bt
== btRange
)
1700 TYPE_NFIELDS (tp
) = 2;
1701 TYPE_FIELDS (tp
) = ((struct field
*)
1702 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1703 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1704 ¤t_objfile
->type_obstack
);
1705 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1707 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1708 ¤t_objfile
->type_obstack
);
1709 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1713 /* Parse all the type qualifiers now. If there are more
1714 than 6 the game will continue in the next aux */
1718 #define PARSE_TQ(tq) \
1719 if (t->tq != tqNil) \
1720 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1732 /* mips cc 2.x and gcc never put out continued aux entries. */
1736 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1740 /* Complain for illegal continuations due to corrupt aux entries. */
1742 complain (&bad_continued_complaint
, sym_name
);
1747 /* Make up a complex type from a basic one. Type is passed by
1748 reference in TPP and side-effected as necessary. The type
1749 qualifier TQ says how to handle the aux symbols at AX for
1750 the symbol SX we are currently analyzing. BIGEND says whether
1751 aux symbols are big-endian or little-endian.
1752 Returns the number of aux symbols we parsed. */
1755 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1761 /* Used in array processing */
1772 t
= lookup_pointer_type (*tpp
);
1777 t
= lookup_function_type (*tpp
);
1784 /* Determine and record the domain type (type of index) */
1785 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1791 rf
= AUX_GET_ISYM (bigend
, ax
);
1794 fh
= get_rfd (fd
, rf
);
1796 indx
= parse_type (fh
- debug_info
->fdr
,
1797 debug_info
->external_aux
+ fh
->iauxBase
,
1798 id
, (int *) NULL
, bigend
, sym_name
);
1800 /* The bounds type should be an integer type, but might be anything
1801 else due to corrupt aux entries. */
1802 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1804 complain (&array_index_type_complaint
, sym_name
);
1805 indx
= mdebug_type_int
;
1808 /* Get the bounds, and create the array type. */
1810 lower
= AUX_GET_DNLOW (bigend
, ax
);
1812 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1814 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1816 range
= create_range_type ((struct type
*) NULL
, indx
,
1819 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1821 /* We used to fill in the supplied array element bitsize
1822 here if the TYPE_LENGTH of the target type was zero.
1823 This happens for a `pointer to an array of anonymous structs',
1824 but in this case the array element bitsize is also zero,
1825 so nothing is gained.
1826 And we used to check the TYPE_LENGTH of the target type against
1827 the supplied array element bitsize.
1828 gcc causes a mismatch for `pointer to array of object',
1829 since the sdb directives it uses do not have a way of
1830 specifying the bitsize, but it does no harm (the
1831 TYPE_LENGTH should be correct) and we should be able to
1832 ignore the erroneous bitsize from the auxiliary entry safely.
1833 dbx seems to ignore it too. */
1835 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1837 if (TYPE_LENGTH (*tpp
) == 0)
1839 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1846 /* Volatile -- currently ignored */
1850 /* Const -- currently ignored */
1854 complain (&unknown_type_qual_complaint
, tq
);
1860 /* Parse a procedure descriptor record PR. Note that the procedure is
1861 parsed _after_ the local symbols, now we just insert the extra
1862 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1863 already been placed in the procedure's main block. Note also that
1864 images that have been partially stripped (ld -x) have been deprived
1865 of local symbols, and we have to cope with them here. FIRST_OFF is
1866 the offset of the first procedure for this FDR; we adjust the
1867 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1868 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1869 in question, or NULL to use top_stack->cur_block. */
1871 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1874 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1875 struct partial_symtab
*pst
)
1877 struct symbol
*s
, *i
;
1879 struct mips_extra_func_info
*e
;
1882 /* Simple rule to find files linked "-x" */
1883 if (cur_fdr
->rss
== -1)
1887 /* Static procedure at address pr->adr. Sigh. */
1888 /* FIXME-32x64. assuming pr->adr fits in long. */
1889 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1897 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1898 ((char *) debug_info
->external_ext
1900 * debug_swap
->external_ext_size
)),
1902 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1910 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1911 ((char *) debug_info
->external_sym
1912 + ((cur_fdr
->isymBase
+ pr
->isym
)
1913 * debug_swap
->external_sym_size
)),
1915 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1918 if (search_symtab
!= NULL
)
1921 /* This loses both in the case mentioned (want a static, find a global),
1922 but also if we are looking up a non-mangled name which happens to
1923 match the name of a mangled function. */
1924 /* We have to save the cur_fdr across the call to lookup_symbol.
1925 If the pdr is for a static function and if a global function with
1926 the same name exists, lookup_symbol will eventually read in the symtab
1927 for the global function and clobber cur_fdr. */
1928 FDR
*save_cur_fdr
= cur_fdr
;
1929 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1930 cur_fdr
= save_cur_fdr
;
1934 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1940 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1941 VAR_NAMESPACE
, LOC_BLOCK
);
1945 b
= SYMBOL_BLOCK_VALUE (s
);
1949 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1953 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1954 s
= new_symbol (sh_name
);
1955 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1956 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1957 /* Donno its type, hope int is ok */
1958 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1959 add_symbol (s
, top_stack
->cur_block
);
1960 /* Wont have symbols for this one */
1962 SYMBOL_BLOCK_VALUE (s
) = b
;
1963 BLOCK_FUNCTION (b
) = s
;
1964 BLOCK_START (b
) = pr
->adr
;
1965 /* BOUND used to be the end of procedure's text, but the
1966 argument is no longer passed in. */
1967 BLOCK_END (b
) = bound
;
1968 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1969 add_block (b
, top_stack
->cur_st
);
1973 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1977 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1979 e
->pdr
.isym
= (long) s
;
1981 /* GDB expects the absolute function start address for the
1982 procedure descriptor in e->pdr.adr.
1983 As the address in the procedure descriptor is usually relative,
1984 we would have to relocate e->pdr.adr with cur_fdr->adr and
1985 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1986 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1987 in shared libraries on some systems, and on other systems
1988 e->pdr.adr is sometimes offset by a bogus value.
1989 To work around these problems, we replace e->pdr.adr with
1990 the start address of the function. */
1991 e
->pdr
.adr
= BLOCK_START (b
);
1993 /* Correct incorrect setjmp procedure descriptor from the library
1994 to make backtrace through setjmp work. */
1995 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1997 complain (&bad_setjmp_pdr_complaint
, 0);
1998 e
->pdr
.pcreg
= RA_REGNUM
;
1999 e
->pdr
.regmask
= 0x80000000;
2000 e
->pdr
.regoffset
= -4;
2004 /* It would be reasonable that functions that have been compiled
2005 without debugging info have a btNil type for their return value,
2006 and functions that are void and are compiled with debugging info
2008 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2009 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2011 The glevel field in cur_fdr could be used to determine the presence
2012 of debugging info, but GCC doesn't always pass the -g switch settings
2013 to the assembler and GAS doesn't set the glevel field from the -g switch
2015 To work around these problems, the return value type of a TYPE_CODE_VOID
2016 function is adjusted accordingly if no debugging info was found in the
2017 compilation unit. */
2019 if (processing_gcc_compilation
== 0
2020 && found_ecoff_debugging_info
== 0
2021 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2022 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2025 /* Relocate the extra function info pointed to by the symbol table. */
2028 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2030 struct mips_extra_func_info
*e
;
2032 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2034 e
->pdr
.adr
+= delta
;
2037 /* Parse the external symbol ES. Just call parse_symbol() after
2038 making sure we know where the aux are for it.
2039 BIGEND says whether aux entries are big-endian or little-endian.
2041 This routine clobbers top_stack->cur_block and ->cur_st. */
2043 static void parse_external (EXTR
*, int, struct section_offsets
*,
2047 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2048 struct objfile
*objfile
)
2052 if (es
->ifd
!= ifdNil
)
2055 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2056 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2060 cur_fdr
= debug_info
->fdr
;
2064 /* Reading .o files */
2065 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2068 switch (es
->asym
.st
)
2071 /* These are generated for static symbols in .o files,
2092 /* FIXME: Turn this into a complaint? */
2094 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2095 what
, debug_info
->ssext
+ es
->asym
.iss
,
2096 fdr_name (cur_fdr
));
2100 switch (es
->asym
.st
)
2104 /* There is no need to parse the external procedure symbols.
2105 If they are from objects compiled without -g, their index will
2106 be indexNil, and the symbol definition from the minimal symbol
2107 is preferrable (yielding a function returning int instead of int).
2108 If the index points to a local procedure symbol, the local
2109 symbol already provides the correct type.
2110 Note that the index of the external procedure symbol points
2111 to the local procedure symbol in the local symbol table, and
2112 _not_ to the auxiliary symbol info. */
2116 /* Global common symbols are resolved by the runtime loader,
2118 if (SC_IS_COMMON (es
->asym
.sc
))
2121 /* Note that the case of a symbol with indexNil must be handled
2122 anyways by parse_symbol(). */
2123 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2130 /* Parse the line number info for file descriptor FH into
2131 GDB's linetable LT. MIPS' encoding requires a little bit
2132 of magic to get things out. Note also that MIPS' line
2133 numbers can go back and forth, apparently we can live
2134 with that and do not need to reorder our linetables */
2136 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2137 struct partial_symtab
*, CORE_ADDR
);
2140 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2141 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2143 unsigned char *base
;
2145 int delta
, count
, lineno
= 0;
2147 if (fh
->cbLine
== 0)
2150 /* Scan by procedure descriptors */
2152 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2156 unsigned char *halt
;
2158 /* No code for this one */
2159 if (pr
->iline
== ilineNil
||
2160 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2163 /* Determine start and end address of compressed line bytes for
2165 base
= debug_info
->line
+ fh
->cbLineOffset
;
2166 if (j
!= (fh
->cpd
- 1))
2167 halt
= base
+ pr
[1].cbLineOffset
;
2169 halt
= base
+ fh
->cbLine
;
2170 base
+= pr
->cbLineOffset
;
2172 adr
= TEXTLOW (pst
) + pr
->adr
- lowest_pdr_addr
;
2174 l
= adr
>> 2; /* in words */
2175 for (lineno
= pr
->lnLow
; base
< halt
;)
2177 count
= *base
& 0x0f;
2178 delta
= *base
++ >> 4;
2183 delta
= (base
[0] << 8) | base
[1];
2184 if (delta
>= 0x8000)
2188 lineno
+= delta
; /* first delta is 0 */
2190 /* Complain if the line table overflows. Could happen
2191 with corrupt binaries. */
2192 if (lt
->nitems
>= maxlines
)
2194 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2197 k
= add_line (lt
, lineno
, l
, k
);
2203 /* Master parsing procedure for first-pass reading of file symbols
2204 into a partial_symtab. */
2207 parse_partial_symbols (struct objfile
*objfile
)
2209 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2210 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2211 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2212 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2213 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2214 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2216 HDRR
*hdr
= &debug_info
->symbolic_header
;
2217 /* Running pointers */
2222 register EXTR
*ext_in
;
2225 struct partial_symtab
*pst
;
2226 int textlow_not_set
= 1;
2227 int past_first_source_file
= 0;
2229 /* List of current psymtab's include files */
2230 char **psymtab_include_list
;
2231 int includes_allocated
;
2234 struct pst_map
*fdr_to_pst
;
2235 /* Index within current psymtab dependency list */
2236 struct partial_symtab
**dependency_list
;
2237 int dependencies_used
, dependencies_allocated
;
2238 struct cleanup
*old_chain
;
2240 enum language prev_language
;
2241 asection
*text_sect
;
2242 int relocatable
= 0;
2244 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2245 the shared libraries are prelinked at a high memory address.
2246 We have to adjust the start address of the object file for this case,
2247 by setting it to the start address of the first procedure in the file.
2248 But we should do no adjustments if we are debugging a .o file, where
2249 the text section (and fh->adr) really starts at zero. */
2250 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2251 if (text_sect
!= NULL
2252 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2255 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2256 sizeof (EXTR
) * hdr
->iextMax
);
2258 includes_allocated
= 30;
2260 psymtab_include_list
= (char **) alloca (includes_allocated
*
2262 next_symbol_text_func
= mdebug_next_symbol_text
;
2264 dependencies_allocated
= 30;
2265 dependencies_used
= 0;
2267 (struct partial_symtab
**) alloca (dependencies_allocated
*
2268 sizeof (struct partial_symtab
*));
2270 last_source_file
= NULL
;
2275 * Only parse the Local and External symbols, and the Relative FDR.
2276 * Fixup enough of the loader symtab to be able to use it.
2277 * Allocate space only for the file's portions we need to
2282 max_glevel
= MIN_GLEVEL
;
2284 /* Allocate the map FDR -> PST.
2285 Minor hack: -O3 images might claim some global data belongs
2286 to FDR -1. We`ll go along with that */
2287 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2288 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2291 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2292 fdr_to_pst
[-1].pst
= pst
;
2296 /* Allocate the global pending list. */
2298 ((struct mdebug_pending
**)
2299 obstack_alloc (&objfile
->psymbol_obstack
,
2300 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2301 memset (pending_list
, 0,
2302 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2304 /* Pass 0 over external syms: swap them in. */
2305 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2306 make_cleanup (xfree
, ext_block
);
2308 ext_out
= (char *) debug_info
->external_ext
;
2309 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2311 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2312 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2314 /* Pass 1 over external syms: Presize and partition the list */
2316 ext_in_end
= ext_in
+ hdr
->iextMax
;
2317 for (; ext_in
< ext_in_end
; ext_in
++)
2319 /* See calls to complain below. */
2320 if (ext_in
->ifd
>= -1
2321 && ext_in
->ifd
< hdr
->ifdMax
2322 && ext_in
->asym
.iss
>= 0
2323 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2324 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2327 /* Pass 1.5 over files: partition out global symbol space */
2329 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2331 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2332 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2333 fdr_to_pst
[f_idx
].n_globals
= 0;
2338 For ECOFF in ELF, we skip the creation of the minimal symbols.
2339 The ECOFF symbols should be a subset of the Elf symbols, and the
2340 section information of the elf symbols will be more accurate.
2341 FIXME! What about Irix 5's native linker?
2343 By default, Elf sections which don't exist in ECOFF
2344 get put in ECOFF's absolute section by the gnu linker.
2345 Since absolute sections don't get relocated, we
2346 end up calculating an address different from that of
2347 the symbol's minimal symbol (created earlier from the
2350 To fix this, either :
2351 1) don't create the duplicate symbol
2352 (assumes ECOFF symtab is a subset of the ELF symtab;
2353 assumes no side-effects result from ignoring ECOFF symbol)
2354 2) create it, only if lookup for existing symbol in ELF's minimal
2357 assumes no side-effects result from ignoring ECOFF symbol)
2358 3) create it, but lookup ELF's minimal symbol and use it's section
2359 during relocation, then modify "uniqify" phase to merge and
2360 eliminate the duplicate symbol
2361 (highly inefficient)
2363 I've implemented #1 here...
2364 Skip the creation of the minimal symbols based on the ECOFF
2367 /* Pass 2 over external syms: fill in external symbols */
2369 ext_in_end
= ext_in
+ hdr
->iextMax
;
2370 for (; ext_in
< ext_in_end
; ext_in
++)
2372 enum minimal_symbol_type ms_type
= mst_text
;
2373 CORE_ADDR svalue
= ext_in
->asym
.value
;
2375 /* The Irix 5 native tools seem to sometimes generate bogus
2376 external symbols. */
2377 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2379 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2382 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2384 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2389 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2390 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2393 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2397 /* Pass 3 over files, over local syms: fill in static symbols */
2398 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2400 /* Process ECOFF Symbol Types and Storage Classes */
2401 switch (ext_in
->asym
.st
)
2404 /* Beginnning of Procedure */
2405 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2408 /* Load time only static procs */
2409 ms_type
= mst_file_text
;
2410 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2413 /* External symbol */
2414 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2416 /* The value of a common symbol is its size, not its address.
2420 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2423 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2425 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2428 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2430 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2433 svalue
+= ANOFFSET (objfile
->section_offsets
,
2434 get_section_index (objfile
, ".sbss"));
2442 /* On certain platforms, some extra label symbols can be
2443 generated by the linker. One possible usage for this kind
2444 of symbols is to represent the address of the begining of a
2445 given section. For instance, on Tru64 5.1, the address of
2446 the _ftext label is the start address of the .text section.
2448 The storage class of these symbols is usually directly
2449 related to the section to which the symbol refers. For
2450 instance, on Tru64 5.1, the storage class for the _fdata
2451 label is scData, refering to the .data section.
2453 It is actually possible that the section associated to the
2454 storage class of the label does not exist. On True64 5.1
2455 for instance, the libm.so shared library does not contain
2456 any .data section, although it contains a _fpdata label
2457 which storage class is scData... Since these symbols are
2458 usually useless for the debugger user anyway, we just
2459 discard these symbols.
2462 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2464 if (objfile
->sect_index_text
== -1)
2467 ms_type
= mst_file_text
;
2468 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2470 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2472 if (objfile
->sect_index_data
== -1)
2475 ms_type
= mst_file_data
;
2476 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2478 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2480 if (objfile
->sect_index_bss
== -1)
2483 ms_type
= mst_file_bss
;
2484 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2486 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2488 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2490 if (sbss_sect_index
== -1)
2493 ms_type
= mst_file_bss
;
2494 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2501 /* The alpha has the section start addresses in stLocal symbols
2502 whose name starts with a `.'. Skip those but complain for all
2503 other stLocal symbols.
2504 Irix6 puts the section start addresses in stNil symbols, skip
2510 ms_type
= mst_unknown
;
2511 complain (&unknown_ext_complaint
, name
);
2513 if (!ECOFF_IN_ELF (cur_bfd
))
2514 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2517 /* Pass 3 over files, over local syms: fill in static symbols */
2518 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2520 struct partial_symtab
*save_pst
;
2524 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2528 fdr_to_pst
[f_idx
].pst
= NULL
;
2532 /* Determine the start address for this object file from the
2533 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2537 if (relocatable
|| textlow
!= 0)
2538 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2542 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2545 objfile
->global_psymbols
.next
,
2546 objfile
->static_psymbols
.next
);
2547 pst
->read_symtab_private
= ((char *)
2548 obstack_alloc (&objfile
->psymbol_obstack
,
2549 sizeof (struct symloc
)));
2550 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2553 TEXTLOW (pst
) = pst
->textlow
;
2554 TEXTHIGH (pst
) = pst
->texthigh
;
2555 FDR_IDX (pst
) = f_idx
;
2556 CUR_BFD (pst
) = cur_bfd
;
2557 DEBUG_SWAP (pst
) = debug_swap
;
2558 DEBUG_INFO (pst
) = debug_info
;
2559 PENDING_LIST (pst
) = pending_list
;
2561 /* The way to turn this into a symtab is to call... */
2562 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2564 /* Set up language for the pst.
2565 The language from the FDR is used if it is unambigious (e.g. cfront
2566 with native cc and g++ will set the language to C).
2567 Otherwise we have to deduce the language from the filename.
2568 Native ecoff has every header file in a separate FDR, so
2569 deduce_language_from_filename will return language_unknown for
2570 a header file, which is not what we want.
2571 But the FDRs for the header files are after the FDR for the source
2572 file, so we can assign the language of the source file to the
2573 following header files. Then we save the language in the private
2574 pst data so that we can reuse it when building symtabs. */
2575 prev_language
= psymtab_language
;
2579 case langCplusplusV2
:
2580 psymtab_language
= language_cplus
;
2583 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2586 if (psymtab_language
== language_unknown
)
2587 psymtab_language
= prev_language
;
2588 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2590 TEXTHIGH (pst
) = TEXTLOW (pst
);
2592 /* For stabs-in-ecoff files, the second symbol must be @stab.
2593 This symbol is emitted by mips-tfile to signal that the
2594 current object file uses encapsulated stabs instead of mips
2595 ecoff for local symbols. (It is the second symbol because
2596 the first symbol is the stFile used to signal the start of a
2598 processing_gcc_compilation
= 0;
2601 (*swap_sym_in
) (cur_bfd
,
2602 ((char *) debug_info
->external_sym
2603 + (fh
->isymBase
+ 1) * external_sym_size
),
2605 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2606 processing_gcc_compilation
= 2;
2609 if (processing_gcc_compilation
!= 0)
2611 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2616 (*swap_sym_in
) (cur_bfd
,
2617 (((char *) debug_info
->external_sym
)
2618 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2620 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2621 if (!ECOFF_IS_STAB (&sh
))
2623 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2628 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2629 if (sh
.st
== stStaticProc
)
2631 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2632 prim_record_minimal_symbol_and_info (namestring
,
2636 SECT_OFF_TEXT (objfile
),
2640 procaddr
= sh
.value
;
2642 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2643 (debug_info
->external_aux
2646 (*swap_sym_in
) (cur_bfd
,
2647 ((char *) debug_info
->external_sym
2648 + ((fh
->isymBase
+ isym
- 1)
2649 * external_sym_size
)),
2653 CORE_ADDR high
= procaddr
+ sh
.value
;
2655 /* Kludge for Irix 5.2 zero fh->adr. */
2657 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
2658 TEXTLOW (pst
) = procaddr
;
2659 if (high
> TEXTHIGH (pst
))
2660 TEXTHIGH (pst
) = high
;
2663 else if (sh
.st
== stStatic
)
2678 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2679 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2680 prim_record_minimal_symbol_and_info (namestring
,
2684 SECT_OFF_DATA (objfile
),
2690 /* FIXME! Shouldn't this use cases for bss,
2691 then have the default be abs? */
2692 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2693 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2694 prim_record_minimal_symbol_and_info (namestring
,
2698 SECT_OFF_BSS (objfile
),
2706 /* Handle stabs continuation */
2708 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2709 int len
= strlen (stabstring
);
2710 while (stabstring
[len
- 1] == '\\')
2713 char *stabstring1
= stabstring
;
2717 /* Ignore continuation char from 1st string */
2720 /* Read next stabstring */
2722 (*swap_sym_in
) (cur_bfd
,
2723 (((char *) debug_info
->external_sym
)
2724 + (fh
->isymBase
+ cur_sdx
)
2725 * external_sym_size
),
2727 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2728 len2
= strlen (stabstring2
);
2730 /* Concatinate stabstring2 with stabstring1 */
2732 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2733 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2736 stabstring
= xmalloc (len
+ len2
+ 1);
2737 strcpy (stabstring
, stabstring1
);
2739 strcpy (stabstring
+ len
, stabstring2
);
2745 static struct complaint function_outside_compilation_unit
= {
2746 "function `%s' appears to be defined outside of all compilation units", 0, 0
2750 * Standard, external, non-debugger, symbols
2753 case N_TEXT
| N_EXT
:
2754 case N_NBTEXT
| N_EXT
:
2755 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2758 case N_DATA
| N_EXT
:
2759 case N_NBDATA
| N_EXT
:
2760 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2765 case N_NBBSS
| N_EXT
:
2766 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2767 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2774 /* Standard, local, non-debugger, symbols */
2778 /* We need to be able to deal with both N_FN or N_TEXT,
2779 because we have no way of knowing whether the sys-supplied ld
2780 or GNU ld was used to make the executable. Sequents throw
2781 in another wrinkle -- they renumbered N_FN. */
2789 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2792 case N_UNDF
| N_EXT
:
2793 continue; /* Just undefined, not COMMON */
2798 /* Lots of symbol types we can just ignore. */
2805 /* Keep going . . . */
2808 * Special symbol types for GNU
2811 case N_INDR
| N_EXT
:
2813 case N_SETA
| N_EXT
:
2815 case N_SETT
| N_EXT
:
2817 case N_SETD
| N_EXT
:
2819 case N_SETB
| N_EXT
:
2830 static int prev_so_symnum
= -10;
2831 static int first_so_symnum
;
2833 int prev_textlow_not_set
;
2835 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2837 prev_textlow_not_set
= textlow_not_set
;
2839 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2840 /* A zero value is probably an indication for the SunPRO 3.0
2841 compiler. end_psymtab explicitly tests for zero, so
2842 don't relocate it. */
2846 textlow_not_set
= 1;
2850 textlow_not_set
= 0;
2852 textlow_not_set
= 0;
2854 past_first_source_file
= 1;
2856 if (prev_so_symnum
!= symnum
- 1)
2857 { /* Here if prev stab wasn't N_SO */
2858 first_so_symnum
= symnum
;
2862 pst
= (struct partial_symtab
*) 0;
2864 dependencies_used
= 0;
2868 prev_so_symnum
= symnum
;
2870 /* End the current partial symtab and start a new one */
2872 /* SET_NAMESTRING ();*/
2873 namestring
= stabstring
;
2875 /* Null name means end of .o file. Don't start a new one. */
2876 if (*namestring
== '\000')
2879 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2880 The first one is a directory name; the second the file name.
2881 If pst exists, is empty, and has a filename ending in '/',
2882 we assume the previous N_SO was a directory name. */
2884 p
= strrchr (namestring
, '/');
2885 if (p
&& *(p
+ 1) == '\000')
2886 continue; /* Simply ignore directory name SOs */
2888 /* Some other compilers (C++ ones in particular) emit useless
2889 SOs for non-existant .c files. We ignore all subsequent SOs that
2890 immediately follow the first. */
2902 enum language tmp_language
;
2903 /* Mark down an include file in the current psymtab */
2905 /* SET_NAMESTRING ();*/
2906 namestring
= stabstring
;
2908 tmp_language
= deduce_language_from_filename (namestring
);
2910 /* Only change the psymtab's language if we've learned
2911 something useful (eg. tmp_language is not language_unknown).
2912 In addition, to match what start_subfile does, never change
2914 if (tmp_language
!= language_unknown
2915 && (tmp_language
!= language_c
2916 || psymtab_language
!= language_cplus
))
2917 psymtab_language
= tmp_language
;
2919 /* In C++, one may expect the same filename to come round many
2920 times, when code is coming alternately from the main file
2921 and from inline functions in other files. So I check to see
2922 if this is a file we've seen before -- either the main
2923 source file, or a previously included file.
2925 This seems to be a lot of time to be spending on N_SOL, but
2926 things like "break c-exp.y:435" need to work (I
2927 suppose the psymtab_include_list could be hashed or put
2928 in a binary tree, if profiling shows this is a major hog). */
2929 if (pst
&& STREQ (namestring
, pst
->filename
))
2933 for (i
= 0; i
< includes_used
; i
++)
2934 if (STREQ (namestring
, psymtab_include_list
[i
]))
2943 psymtab_include_list
[includes_used
++] = namestring
;
2944 if (includes_used
>= includes_allocated
)
2946 char **orig
= psymtab_include_list
;
2948 psymtab_include_list
= (char **)
2949 alloca ((includes_allocated
*= 2) *
2951 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2952 includes_used
* sizeof (char *));
2956 case N_LSYM
: /* Typedef or automatic variable. */
2957 case N_STSYM
: /* Data seg var -- static */
2958 case N_LCSYM
: /* BSS " */
2959 case N_ROSYM
: /* Read-only data seg var -- static. */
2960 case N_NBSTS
: /* Gould nobase. */
2961 case N_NBLCS
: /* symbols. */
2963 case N_GSYM
: /* Global (extern) variable; can be
2964 data or bss (sigh FIXME). */
2966 /* Following may probably be ignored; I'll leave them here
2967 for now (until I do Pascal and Modula 2 extensions). */
2969 case N_PC
: /* I may or may not need this; I
2971 case N_M2C
: /* I suspect that I can ignore this here. */
2972 case N_SCOPE
: /* Same. */
2974 /* SET_NAMESTRING ();*/
2975 namestring
= stabstring
;
2976 p
= (char *) strchr (namestring
, ':');
2978 continue; /* Not a debugging symbol. */
2982 /* Main processing section for debugging symbols which
2983 the initial read through the symbol tables needs to worry
2984 about. If we reach this point, the symbol which we are
2985 considering is definitely one we are interested in.
2986 p must also contain the (valid) index into the namestring
2987 which indicates the debugging type symbol. */
2992 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2993 #ifdef STATIC_TRANSFORM_NAME
2994 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2996 add_psymbol_to_list (namestring
, p
- namestring
,
2997 VAR_NAMESPACE
, LOC_STATIC
,
2998 &objfile
->static_psymbols
,
3000 psymtab_language
, objfile
);
3003 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3004 /* The addresses in these entries are reported to be
3005 wrong. See the code that reads 'G's for symtabs. */
3006 add_psymbol_to_list (namestring
, p
- namestring
,
3007 VAR_NAMESPACE
, LOC_STATIC
,
3008 &objfile
->global_psymbols
,
3010 psymtab_language
, objfile
);
3014 /* When a 'T' entry is defining an anonymous enum, it
3015 may have a name which is the empty string, or a
3016 single space. Since they're not really defining a
3017 symbol, those shouldn't go in the partial symbol
3018 table. We do pick up the elements of such enums at
3019 'check_enum:', below. */
3020 if (p
>= namestring
+ 2
3021 || (p
== namestring
+ 1
3022 && namestring
[0] != ' '))
3024 add_psymbol_to_list (namestring
, p
- namestring
,
3025 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3026 &objfile
->static_psymbols
,
3028 psymtab_language
, objfile
);
3031 /* Also a typedef with the same name. */
3032 add_psymbol_to_list (namestring
, p
- namestring
,
3033 VAR_NAMESPACE
, LOC_TYPEDEF
,
3034 &objfile
->static_psymbols
,
3036 psymtab_language
, objfile
);
3039 /* The semantics of C++ state that "struct foo { ... }"
3040 also defines a typedef for "foo". Unfortuantely, cfront
3041 never makes the typedef when translating from C++ to C.
3042 We make the typedef here so that "ptype foo" works as
3043 expected for cfront translated code. */
3044 else if (psymtab_language
== language_cplus
)
3046 /* Also a typedef with the same name. */
3047 add_psymbol_to_list (namestring
, p
- namestring
,
3048 VAR_NAMESPACE
, LOC_TYPEDEF
,
3049 &objfile
->static_psymbols
,
3051 psymtab_language
, objfile
);
3056 if (p
!= namestring
) /* a name is there, not just :T... */
3058 add_psymbol_to_list (namestring
, p
- namestring
,
3059 VAR_NAMESPACE
, LOC_TYPEDEF
,
3060 &objfile
->static_psymbols
,
3062 psymtab_language
, objfile
);
3065 /* If this is an enumerated type, we need to
3066 add all the enum constants to the partial symbol
3067 table. This does not cover enums without names, e.g.
3068 "enum {a, b} c;" in C, but fortunately those are
3069 rare. There is no way for GDB to find those from the
3070 enum type without spending too much time on it. Thus
3071 to solve this problem, the compiler needs to put out the
3072 enum in a nameless type. GCC2 does this. */
3074 /* We are looking for something of the form
3075 <name> ":" ("t" | "T") [<number> "="] "e"
3076 {<constant> ":" <value> ","} ";". */
3078 /* Skip over the colon and the 't' or 'T'. */
3080 /* This type may be given a number. Also, numbers can come
3081 in pairs like (0,26). Skip over it. */
3082 while ((*p
>= '0' && *p
<= '9')
3083 || *p
== '(' || *p
== ',' || *p
== ')'
3089 /* The aix4 compiler emits extra crud before the members. */
3092 /* Skip over the type (?). */
3096 /* Skip over the colon. */
3100 /* We have found an enumerated type. */
3101 /* According to comments in read_enum_type
3102 a comma could end it instead of a semicolon.
3103 I don't know where that happens.
3105 while (*p
&& *p
!= ';' && *p
!= ',')
3109 /* Check for and handle cretinous dbx symbol name
3111 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3112 p
= next_symbol_text (objfile
);
3114 /* Point to the character after the name
3115 of the enum constant. */
3116 for (q
= p
; *q
&& *q
!= ':'; q
++)
3118 /* Note that the value doesn't matter for
3119 enum constants in psymtabs, just in symtabs. */
3120 add_psymbol_to_list (p
, q
- p
,
3121 VAR_NAMESPACE
, LOC_CONST
,
3122 &objfile
->static_psymbols
, 0,
3123 0, psymtab_language
, objfile
);
3124 /* Point past the name. */
3126 /* Skip over the value. */
3127 while (*p
&& *p
!= ',')
3129 /* Advance past the comma. */
3136 /* Constant, e.g. from "const" in Pascal. */
3137 add_psymbol_to_list (namestring
, p
- namestring
,
3138 VAR_NAMESPACE
, LOC_CONST
,
3139 &objfile
->static_psymbols
, sh
.value
,
3140 0, psymtab_language
, objfile
);
3146 int name_len
= p
- namestring
;
3147 char *name
= xmalloc (name_len
+ 1);
3148 memcpy (name
, namestring
, name_len
);
3149 name
[name_len
] = '\0';
3150 complain (&function_outside_compilation_unit
, name
);
3153 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3154 add_psymbol_to_list (namestring
, p
- namestring
,
3155 VAR_NAMESPACE
, LOC_BLOCK
,
3156 &objfile
->static_psymbols
,
3158 psymtab_language
, objfile
);
3161 /* Global functions were ignored here, but now they
3162 are put into the global psymtab like one would expect.
3163 They're also in the minimal symbol table. */
3167 int name_len
= p
- namestring
;
3168 char *name
= xmalloc (name_len
+ 1);
3169 memcpy (name
, namestring
, name_len
);
3170 name
[name_len
] = '\0';
3171 complain (&function_outside_compilation_unit
, name
);
3174 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3175 add_psymbol_to_list (namestring
, p
- namestring
,
3176 VAR_NAMESPACE
, LOC_BLOCK
,
3177 &objfile
->global_psymbols
,
3179 psymtab_language
, objfile
);
3182 /* Two things show up here (hopefully); static symbols of
3183 local scope (static used inside braces) or extensions
3184 of structure symbols. We can ignore both. */
3198 case '#': /* for symbol identification (used in live ranges) */
3199 /* added to support cfront stabs strings */
3200 case 'Z': /* for definition continuations */
3201 case 'P': /* for prototypes */
3205 /* It is a C++ nested symbol. We don't need to record it
3206 (I don't think); if we try to look up foo::bar::baz,
3207 then symbols for the symtab containing foo should get
3208 read in, I think. */
3209 /* Someone says sun cc puts out symbols like
3210 /foo/baz/maclib::/usr/local/bin/maclib,
3211 which would get here with a symbol type of ':'. */
3215 /* Unexpected symbol descriptor. The second and subsequent stabs
3216 of a continued stab can show up here. The question is
3217 whether they ever can mimic a normal stab--it would be
3218 nice if not, since we certainly don't want to spend the
3219 time searching to the end of every string looking for
3222 complain (&unknown_symchar_complaint
, p
[1]);
3224 /* Ignore it; perhaps it is an extension that we don't
3233 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3234 /* Solaris 2 end of module, finish current partial symbol table.
3235 END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which
3236 is necessary if a module compiled without debugging info
3237 follows this module. */
3240 pst
= (struct partial_symtab
*) 0;
3242 dependencies_used
= 0;
3248 if (sh
.value
> TEXTHIGH (save_pst
))
3249 TEXTHIGH (save_pst
) = sh
.value
;
3254 case N_SSYM
: /* Claim: Structure or union element.
3255 Hopefully, I can ignore this. */
3256 case N_ENTRY
: /* Alternate entry point; can ignore. */
3257 case N_MAIN
: /* Can definitely ignore this. */
3258 case N_CATCH
: /* These are GNU C++ extensions */
3259 case N_EHDECL
: /* that can safely be ignored here. */
3269 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3270 case N_DEFD
: /* GNU Modula-2 */
3271 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3273 case N_OBJ
: /* useless types from Solaris */
3275 /* These symbols aren't interesting; don't worry about them */
3280 /* If we haven't found it yet, ignore it. It's probably some
3281 new type we don't know about yet. */
3282 complain (&unknown_symtype_complaint
,
3283 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3287 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3290 /* end - Handle continuation */
3295 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3298 enum address_class
class;
3300 (*swap_sym_in
) (cur_bfd
,
3301 ((char *) debug_info
->external_sym
3302 + ((fh
->isymBase
+ cur_sdx
)
3303 * external_sym_size
)),
3306 if (ECOFF_IS_STAB (&sh
))
3312 /* Non absolute static symbols go into the minimal table. */
3313 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3314 || (sh
.index
== indexNil
3315 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3317 /* FIXME, premature? */
3322 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3328 /* The value of a stEnd symbol is the displacement from the
3329 corresponding start symbol value, do not relocate it. */
3331 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3338 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3342 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3353 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3354 mst_file_text
, NULL
,
3355 SECT_OFF_TEXT (objfile
), NULL
,
3361 /* Usually there is a local and a global stProc symbol
3362 for a function. This means that the function name
3363 has already been entered into the mimimal symbol table
3364 while processing the global symbols in pass 2 above.
3365 One notable exception is the PROGRAM name from
3366 f77 compiled executables, it is only put out as
3367 local stProc symbol, and a global MAIN__ stProc symbol
3368 points to it. It doesn't matter though, as gdb is
3369 still able to find the PROGRAM name via the partial
3370 symbol table, and the MAIN__ symbol via the minimal
3372 if (sh
.st
== stProc
)
3373 add_psymbol_to_list (name
, strlen (name
),
3374 VAR_NAMESPACE
, LOC_BLOCK
,
3375 &objfile
->global_psymbols
,
3376 0, sh
.value
, psymtab_language
, objfile
);
3378 add_psymbol_to_list (name
, strlen (name
),
3379 VAR_NAMESPACE
, LOC_BLOCK
,
3380 &objfile
->static_psymbols
,
3381 0, sh
.value
, psymtab_language
, objfile
);
3383 /* Skip over procedure to next one. */
3384 if (sh
.index
>= hdr
->iauxMax
)
3386 /* Should not happen, but does when cross-compiling
3387 with the MIPS compiler. FIXME -- pull later. */
3388 complain (&index_complaint
, name
);
3389 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3392 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3393 (debug_info
->external_aux
3396 procaddr
= sh
.value
;
3398 if (new_sdx
<= cur_sdx
)
3400 /* This should not happen either... FIXME. */
3401 complain (&aux_index_complaint
, name
);
3402 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3406 (*swap_sym_in
) (cur_bfd
,
3407 ((char *) debug_info
->external_sym
3408 + ((fh
->isymBase
+ cur_sdx
- 1)
3409 * external_sym_size
)),
3414 /* Kludge for Irix 5.2 zero fh->adr. */
3416 && (TEXTLOW (pst
) == 0 || procaddr
< TEXTLOW (pst
)))
3417 TEXTLOW (pst
) = procaddr
;
3419 high
= procaddr
+ sh
.value
;
3420 if (high
> TEXTHIGH (pst
))
3421 TEXTHIGH (pst
) = high
;
3424 case stStatic
: /* Variable */
3425 if (SC_IS_DATA (sh
.sc
))
3426 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3427 mst_file_data
, NULL
,
3428 SECT_OFF_DATA (objfile
),
3432 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3434 SECT_OFF_BSS (objfile
),
3440 case stIndirect
: /* Irix5 forward declaration */
3441 /* Skip forward declarations from Irix5 cc */
3444 case stTypedef
: /* Typedef */
3445 /* Skip typedefs for forward declarations and opaque
3446 structs from alpha and mips cc. */
3447 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3449 class = LOC_TYPEDEF
;
3452 case stConstant
: /* Constant decl */
3459 case stBlock
: /* { }, str, un, enum */
3460 /* Do not create a partial symbol for cc unnamed aggregates
3461 and gcc empty aggregates. */
3462 if ((sh
.sc
== scInfo
3463 || SC_IS_COMMON (sh
.sc
))
3465 && sh
.index
!= cur_sdx
+ 2)
3467 add_psymbol_to_list (name
, strlen (name
),
3468 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3469 &objfile
->static_psymbols
,
3471 psymtab_language
, objfile
);
3473 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3475 /* Skip over the block */
3477 if (new_sdx
<= cur_sdx
)
3479 /* This happens with the Ultrix kernel. */
3480 complain (&block_index_complaint
, name
);
3481 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3486 case stFile
: /* File headers */
3487 case stLabel
: /* Labels */
3488 case stEnd
: /* Ends of files */
3491 case stLocal
: /* Local variables */
3492 /* Normally these are skipped because we skip over
3493 all blocks we see. However, these can occur
3494 as visible symbols in a .h file that contains code. */
3498 /* Both complaints are valid: one gives symbol name,
3499 the other the offending symbol type. */
3500 complain (&unknown_sym_complaint
, name
);
3501 complain (&unknown_st_complaint
, sh
.st
);
3505 /* Use this gdb symbol */
3506 add_psymbol_to_list (name
, strlen (name
),
3507 VAR_NAMESPACE
, class,
3508 &objfile
->static_psymbols
,
3509 0, sh
.value
, psymtab_language
, objfile
);
3511 cur_sdx
++; /* Go to next file symbol */
3514 /* Now do enter the external symbols. */
3515 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3516 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3517 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3518 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3519 for (; --cur_sdx
>= 0; ext_ptr
++)
3521 enum address_class
class;
3526 if (ext_ptr
->ifd
!= f_idx
)
3527 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3528 psh
= &ext_ptr
->asym
;
3530 /* Do not add undefined symbols to the partial symbol table. */
3531 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3534 svalue
= psh
->value
;
3539 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3546 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3550 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3557 /* These are generated for static symbols in .o files,
3562 /* External procedure symbols have been entered
3563 into the minimal symbol table in pass 2 above.
3564 Ignore them, as parse_external will ignore them too. */
3570 complain (&unknown_ext_complaint
,
3571 debug_info
->ssext
+ psh
->iss
);
3572 /* Fall through, pretend it's global. */
3574 /* Global common symbols are resolved by the runtime loader,
3576 if (SC_IS_COMMON (psh
->sc
))
3582 name
= debug_info
->ssext
+ psh
->iss
;
3583 add_psymbol_to_list (name
, strlen (name
),
3584 VAR_NAMESPACE
, class,
3585 &objfile
->global_psymbols
,
3587 psymtab_language
, objfile
);
3591 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3592 empty and put on the free list. */
3593 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3594 psymtab_include_list
, includes_used
,
3595 -1, TEXTHIGH (save_pst
),
3596 dependency_list
, dependencies_used
, textlow_not_set
);
3598 dependencies_used
= 0;
3600 if (objfile
->ei
.entry_point
>= TEXTLOW (save_pst
) &&
3601 objfile
->ei
.entry_point
< TEXTHIGH (save_pst
))
3603 objfile
->ei
.entry_file_lowpc
= TEXTLOW (save_pst
);
3604 objfile
->ei
.entry_file_highpc
= TEXTHIGH (save_pst
);
3607 /* The objfile has its functions reordered if this partial symbol
3608 table overlaps any other partial symbol table.
3609 We cannot assume a reordered objfile if a partial symbol table
3610 is contained within another partial symbol table, as partial symbol
3611 tables for include files with executable code are contained
3612 within the partial symbol table for the including source file,
3613 and we do not want to flag the objfile reordered for these cases.
3615 This strategy works well for Irix-5.2 shared libraries, but we
3616 might have to use a more elaborate (and slower) algorithm for
3618 save_pst
= fdr_to_pst
[f_idx
].pst
;
3619 if (save_pst
!= NULL
3620 && TEXTLOW (save_pst
) != 0
3621 && !(objfile
->flags
& OBJF_REORDERED
))
3623 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3626 && TEXTLOW (save_pst
) >= TEXTLOW (pst
)
3627 && TEXTLOW (save_pst
) < TEXTHIGH (pst
)
3628 && TEXTHIGH (save_pst
) > TEXTHIGH (pst
))
3630 objfile
->flags
|= OBJF_REORDERED
;
3637 /* Now scan the FDRs for dependencies */
3638 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3640 fh
= f_idx
+ debug_info
->fdr
;
3641 pst
= fdr_to_pst
[f_idx
].pst
;
3643 if (pst
== (struct partial_symtab
*) NULL
)
3646 /* This should catch stabs-in-ecoff. */
3650 /* Skip the first file indirect entry as it is a self dependency
3651 for source files or a reverse .h -> .c dependency for header files. */
3652 pst
->number_of_dependencies
= 0;
3654 ((struct partial_symtab
**)
3655 obstack_alloc (&objfile
->psymbol_obstack
,
3657 * sizeof (struct partial_symtab
*))));
3658 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3662 (*swap_rfd_in
) (cur_bfd
,
3663 ((char *) debug_info
->external_rfd
3664 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3666 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3668 complain (&bad_file_number_complaint
, rh
);
3672 /* Skip self dependencies of header files. */
3676 /* Do not add to dependeny list if psymtab was empty. */
3677 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3679 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3683 /* Remove the dummy psymtab created for -O3 images above, if it is
3684 still empty, to enable the detection of stripped executables. */
3685 if (objfile
->psymtabs
->next
== NULL
3686 && objfile
->psymtabs
->number_of_dependencies
== 0
3687 && objfile
->psymtabs
->n_global_syms
== 0
3688 && objfile
->psymtabs
->n_static_syms
== 0)
3689 objfile
->psymtabs
= NULL
;
3690 do_cleanups (old_chain
);
3693 /* If the current psymbol has an enumerated type, we need to add
3694 all the the enum constants to the partial symbol table. */
3697 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3700 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3701 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3702 char *ext_sym
= ((char *) debug_info
->external_sym
3703 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3713 /* It is an enumerated type if the next symbol entry is a stMember
3714 and its auxiliary index is indexNil or its auxiliary entry
3715 is a plain btNil or btVoid.
3716 Alpha cc -migrate enums are recognized by a zero index and
3717 a zero symbol value.
3718 DU 4.0 cc enums are recognized by a member type of btEnum without
3719 qualifiers and a zero symbol value. */
3720 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3721 if (sh
.st
!= stMember
)
3724 if (sh
.index
== indexNil
3725 || (sh
.index
== 0 && svalue
== 0))
3727 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3728 &(debug_info
->external_aux
3729 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3731 if ((tir
.bt
!= btNil
3733 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3734 || tir
.tq0
!= tqNil
)
3746 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3747 if (sh
.st
!= stMember
)
3749 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3751 /* Note that the value doesn't matter for enum constants
3752 in psymtabs, just in symtabs. */
3753 add_psymbol_to_list (name
, strlen (name
),
3754 VAR_NAMESPACE
, LOC_CONST
,
3755 &objfile
->static_psymbols
, 0,
3756 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3757 ext_sym
+= external_sym_size
;
3761 /* Get the next symbol. OBJFILE is unused. */
3764 mdebug_next_symbol_text (struct objfile
*objfile
)
3769 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3770 ((char *) debug_info
->external_sym
3771 + ((cur_fdr
->isymBase
+ cur_sdx
)
3772 * debug_swap
->external_sym_size
)),
3774 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3777 /* Ancillary function to psymtab_to_symtab(). Does all the work
3778 for turning the partial symtab PST into a symtab, recurring
3779 first on all dependent psymtabs. The argument FILENAME is
3780 only passed so we can see in debug stack traces what file
3783 This function has a split personality, based on whether the
3784 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3785 The flow of control and even the memory allocation differs. FIXME. */
3788 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3790 bfd_size_type external_sym_size
;
3791 bfd_size_type external_pdr_size
;
3792 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3793 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3795 struct symtab
*st
= NULL
;
3797 struct linetable
*lines
;
3798 CORE_ADDR lowest_pdr_addr
= 0;
3799 int last_symtab_ended
= 0;
3805 /* Read in all partial symbtabs on which this one is dependent.
3806 NOTE that we do have circular dependencies, sigh. We solved
3807 that by setting pst->readin before this point. */
3809 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3810 if (!pst
->dependencies
[i
]->readin
)
3812 /* Inform about additional files to be read in. */
3815 fputs_filtered (" ", gdb_stdout
);
3817 fputs_filtered ("and ", gdb_stdout
);
3819 printf_filtered ("%s...",
3820 pst
->dependencies
[i
]->filename
);
3821 wrap_here (""); /* Flush output */
3822 gdb_flush (gdb_stdout
);
3824 /* We only pass the filename for debug purposes */
3825 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3826 pst
->dependencies
[i
]->filename
);
3829 /* Do nothing if this is a dummy psymtab. */
3831 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3832 && TEXTLOW (pst
) == 0 && TEXTHIGH (pst
) == 0)
3835 /* Now read the symbols for this symtab */
3837 cur_bfd
= CUR_BFD (pst
);
3838 debug_swap
= DEBUG_SWAP (pst
);
3839 debug_info
= DEBUG_INFO (pst
);
3840 pending_list
= PENDING_LIST (pst
);
3841 external_sym_size
= debug_swap
->external_sym_size
;
3842 external_pdr_size
= debug_swap
->external_pdr_size
;
3843 swap_sym_in
= debug_swap
->swap_sym_in
;
3844 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3845 current_objfile
= pst
->objfile
;
3846 cur_fd
= FDR_IDX (pst
);
3847 fh
= ((cur_fd
== -1)
3849 : debug_info
->fdr
+ cur_fd
);
3852 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3853 processing_gcc_compilation
= 0;
3854 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3858 (*swap_sym_in
) (cur_bfd
,
3859 ((char *) debug_info
->external_sym
3860 + (fh
->isymBase
+ 1) * external_sym_size
),
3862 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3865 /* We indicate that this is a GCC compilation so that certain
3866 features will be enabled in stabsread/dbxread. */
3867 processing_gcc_compilation
= 2;
3871 if (processing_gcc_compilation
!= 0)
3874 /* This symbol table contains stabs-in-ecoff entries. */
3876 /* Parse local symbols first */
3878 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3880 current_objfile
= NULL
;
3883 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3889 (*swap_sym_in
) (cur_bfd
,
3890 (((char *) debug_info
->external_sym
)
3891 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3893 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3895 /* XXX This is a hack. It will go away! */
3896 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3898 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3900 /* We should never get non N_STAB symbols here, but they
3901 should be harmless, so keep process_one_symbol from
3902 complaining about them. */
3903 if (type_code
& N_STAB
)
3905 /* If we found a trailing N_SO with no name, process
3906 it here instead of in process_one_symbol, so we
3907 can keep a handle to its symtab. The symtab
3908 would otherwise be ended twice, once in
3909 process_one_symbol, and once after this loop. */
3910 if (type_code
== N_SO
3912 && previous_stab_code
!= (unsigned char) N_SO
3915 valu
+= ANOFFSET (pst
->section_offsets
,
3916 SECT_OFF_TEXT (pst
->objfile
));
3917 previous_stab_code
= N_SO
;
3918 st
= end_symtab (valu
, pst
->objfile
,
3919 SECT_OFF_TEXT (pst
->objfile
));
3921 last_symtab_ended
= 1;
3925 last_symtab_ended
= 0;
3926 process_one_symbol (type_code
, 0, valu
, name
,
3927 pst
->section_offsets
, pst
->objfile
);
3930 /* Similarly a hack. */
3931 else if (name
[0] == '#')
3933 process_one_symbol (N_SLINE
, 0, valu
, name
,
3934 pst
->section_offsets
, pst
->objfile
);
3936 if (type_code
== N_FUN
)
3938 /* Make up special symbol to contain
3939 procedure specific info */
3940 struct mips_extra_func_info
*e
=
3941 ((struct mips_extra_func_info
*)
3942 obstack_alloc (¤t_objfile
->symbol_obstack
,
3943 sizeof (struct mips_extra_func_info
)));
3944 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3946 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3947 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3948 SYMBOL_CLASS (s
) = LOC_CONST
;
3949 SYMBOL_TYPE (s
) = mdebug_type_void
;
3950 SYMBOL_VALUE (s
) = (long) e
;
3951 e
->pdr
.framereg
= -1;
3952 add_symbol_to_list (s
, &local_symbols
);
3955 else if (sh
.st
== stLabel
)
3957 if (sh
.index
== indexNil
)
3959 /* This is what the gcc2_compiled and __gnu_compiled_*
3960 show up as. So don't complain. */
3965 /* Handle encoded stab line number. */
3966 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3967 record_line (current_subfile
, sh
.index
, valu
);
3970 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3971 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3972 /* These are generated by gcc-2.x, do not complain */
3975 complain (&stab_unknown_complaint
, name
);
3978 if (! last_symtab_ended
)
3980 st
= end_symtab (TEXTHIGH (pst
), pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3984 /* Sort the symbol table now, we are done adding symbols to it.
3985 We must do this before parse_procedure calls lookup_symbol. */
3986 sort_symtab_syms (st
);
3988 /* There used to be a call to sort_blocks here, but this should not
3989 be necessary for stabs symtabs. And as sort_blocks modifies the
3990 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3991 it did the wrong thing if the first procedure in a file was
3992 generated via asm statements. */
3994 /* Fill in procedure info next. */
3998 struct cleanup
*old_chain
;
4004 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4005 old_chain
= make_cleanup (xfree
, pr_block
);
4007 pdr_ptr
= ((char *) debug_info
->external_pdr
4008 + fh
->ipdFirst
* external_pdr_size
);
4009 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4013 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4015 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4017 /* Determine lowest PDR address, the PDRs are not always
4019 if (pdr_in
== pr_block
)
4020 lowest_pdr_addr
= pdr_in
->adr
;
4021 else if (pdr_in
->adr
< lowest_pdr_addr
)
4022 lowest_pdr_addr
= pdr_in
->adr
;
4026 pdr_in_end
= pdr_in
+ fh
->cpd
;
4027 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4028 parse_procedure (pdr_in
, st
, pst
);
4030 do_cleanups (old_chain
);
4035 /* This symbol table contains ordinary ecoff entries. */
4041 /* How many symbols will we need */
4042 /* FIXME, this does not count enum values. */
4043 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4047 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4051 f_max
+= fh
->csym
+ fh
->cpd
;
4052 maxlines
= 2 * fh
->cline
;
4053 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4055 /* The proper language was already determined when building
4056 the psymtab, use it. */
4057 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4060 psymtab_language
= st
->language
;
4062 lines
= LINETABLE (st
);
4064 /* Get a new lexical context */
4066 push_parse_stack ();
4067 top_stack
->cur_st
= st
;
4068 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4070 BLOCK_START (top_stack
->cur_block
) = TEXTLOW (pst
);
4071 BLOCK_END (top_stack
->cur_block
) = 0;
4072 top_stack
->blocktype
= stFile
;
4073 top_stack
->maxsyms
= 2 * f_max
;
4074 top_stack
->cur_type
= 0;
4075 top_stack
->procadr
= 0;
4076 top_stack
->numargs
= 0;
4077 found_ecoff_debugging_info
= 0;
4084 /* Parse local symbols first */
4085 sym_ptr
= ((char *) debug_info
->external_sym
4086 + fh
->isymBase
* external_sym_size
);
4087 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4088 while (sym_ptr
< sym_end
)
4093 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4094 c
= parse_symbol (&sh
,
4095 debug_info
->external_aux
+ fh
->iauxBase
,
4096 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4097 sym_ptr
+= c
* external_sym_size
;
4100 /* Linenumbers. At the end, check if we can save memory.
4101 parse_lines has to look ahead an arbitrary number of PDR
4102 structures, so we swap them all first. */
4106 struct cleanup
*old_chain
;
4112 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4114 old_chain
= make_cleanup (xfree
, pr_block
);
4116 pdr_ptr
= ((char *) debug_info
->external_pdr
4117 + fh
->ipdFirst
* external_pdr_size
);
4118 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4122 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4124 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4126 /* Determine lowest PDR address, the PDRs are not always
4128 if (pdr_in
== pr_block
)
4129 lowest_pdr_addr
= pdr_in
->adr
;
4130 else if (pdr_in
->adr
< lowest_pdr_addr
)
4131 lowest_pdr_addr
= pdr_in
->adr
;
4134 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4135 if (lines
->nitems
< fh
->cline
)
4136 lines
= shrink_linetable (lines
);
4138 /* Fill in procedure info next. */
4140 pdr_in_end
= pdr_in
+ fh
->cpd
;
4141 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4142 parse_procedure (pdr_in
, 0, pst
);
4144 do_cleanups (old_chain
);
4148 LINETABLE (st
) = lines
;
4150 /* .. and our share of externals.
4151 XXX use the global list to speed up things here. how?
4152 FIXME, Maybe quit once we have found the right number of ext's? */
4153 top_stack
->cur_st
= st
;
4154 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4156 top_stack
->blocktype
= stFile
;
4158 = (debug_info
->symbolic_header
.isymMax
4159 + debug_info
->symbolic_header
.ipdMax
4160 + debug_info
->symbolic_header
.iextMax
);
4162 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4163 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4164 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4166 /* If there are undefined symbols, tell the user.
4167 The alpha has an undefined symbol for every symbol that is
4168 from a shared library, so tell the user only if verbose is on. */
4169 if (info_verbose
&& n_undef_symbols
)
4171 printf_filtered ("File %s contains %d unresolved references:",
4172 st
->filename
, n_undef_symbols
);
4173 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4174 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4175 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4182 /* Sort the symbol table now, we are done adding symbols to it. */
4183 sort_symtab_syms (st
);
4188 /* Now link the psymtab and the symtab. */
4191 current_objfile
= NULL
;
4194 /* Ancillary parsing procedures. */
4196 /* Return 1 if the symbol pointed to by SH has a cross reference
4197 to an opaque aggregate type, else 0. */
4200 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4207 if (sh
->index
== indexNil
)
4210 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4211 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4212 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4216 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4217 if (rn
->rfd
== 0xfff)
4218 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4226 /* Lookup the type at relative index RN. Return it in TPP
4227 if found and in any event come up with its name PNAME.
4228 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4229 Return value says how many aux symbols we ate. */
4232 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. */
4233 char **pname
, int bigend
, char *sym_name
)
4242 struct mdebug_pending
*pend
;
4244 *tpp
= (struct type
*) NULL
;
4246 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4248 /* Escape index means 'the next one' */
4249 if (rn
->rfd
== 0xfff)
4252 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4259 /* mips cc uses a rf of -1 for opaque struct definitions.
4260 Set TYPE_FLAG_STUB for these types so that check_typedef will
4261 resolve them if the struct gets defined in another compilation unit. */
4264 *pname
= "<undefined>";
4265 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4269 /* mips cc uses an escaped rn->index of 0 for struct return types
4270 of procedures that were compiled without -g. These will always remain
4272 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4274 *pname
= "<undefined>";
4278 /* Find the relative file descriptor and the symbol in it. */
4279 fh
= get_rfd (fd
, rf
);
4280 xref_fd
= fh
- debug_info
->fdr
;
4282 if (rn
->index
>= fh
->csym
)
4284 /* File indirect entry is corrupt. */
4285 *pname
= "<illegal>";
4286 complain (&bad_rfd_entry_complaint
,
4287 sym_name
, xref_fd
, rn
->index
);
4291 /* If we have processed this symbol then we left a forwarding
4292 pointer to the type in the pending list. If not, we`ll put
4293 it in a list of pending types, to be processed later when
4294 the file will be. In any event, we collect the name for the
4297 esh
= ((char *) debug_info
->external_sym
4298 + ((fh
->isymBase
+ rn
->index
)
4299 * debug_swap
->external_sym_size
));
4300 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4302 /* Make sure that this type of cross reference can be handled. */
4303 if ((sh
.sc
!= scInfo
4304 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4305 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4306 && sh
.st
!= stEnum
))
4307 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4309 /* File indirect entry is corrupt. */
4310 *pname
= "<illegal>";
4311 complain (&bad_rfd_entry_complaint
,
4312 sym_name
, xref_fd
, rn
->index
);
4316 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4318 pend
= is_pending_symbol (fh
, esh
);
4323 /* We have not yet seen this type. */
4325 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4329 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4331 a) forward declarations of structs/unions/enums which are not
4332 defined in this compilation unit.
4333 For these the type will be void. This is a bad design decision
4334 as cross referencing across compilation units is impossible
4335 due to the missing name.
4336 b) forward declarations of structs/unions/enums/typedefs which
4337 are defined later in this file or in another file in the same
4338 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4339 Simply cross reference those again to get the true type.
4340 The forward references are not entered in the pending list and
4341 in the symbol table. */
4343 (*debug_swap
->swap_tir_in
) (bigend
,
4344 &(debug_info
->external_aux
4345 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4347 if (tir
.tq0
!= tqNil
)
4348 complain (&illegal_forward_tq0_complaint
, sym_name
);
4352 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4354 *pname
= "<undefined>";
4361 (debug_info
->external_aux
4362 + fh
->iauxBase
+ sh
.index
+ 1),
4363 tpp
, type_code
, pname
,
4364 fh
->fBigendian
, sym_name
);
4368 /* Follow a forward typedef. This might recursively
4369 call cross_ref till we get a non typedef'ed type.
4370 FIXME: This is not correct behaviour, but gdb currently
4371 cannot handle typedefs without type copying. Type
4372 copying is impossible as we might have mutual forward
4373 references between two files and the copied type would not
4374 get filled in when we later parse its definition. */
4375 *tpp
= parse_type (xref_fd
,
4376 debug_info
->external_aux
+ fh
->iauxBase
,
4380 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4381 add_pending (fh
, esh
, *tpp
);
4385 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
4386 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4392 else if (sh
.st
== stTypedef
)
4394 /* Parse the type for a normal typedef. This might recursively call
4395 cross_ref till we get a non typedef'ed type.
4396 FIXME: This is not correct behaviour, but gdb currently
4397 cannot handle typedefs without type copying. But type copying is
4398 impossible as we might have mutual forward references between
4399 two files and the copied type would not get filled in when
4400 we later parse its definition. */
4401 *tpp
= parse_type (xref_fd
,
4402 debug_info
->external_aux
+ fh
->iauxBase
,
4406 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4410 /* Cross reference to a struct/union/enum which is defined
4411 in another file in the same compilation unit but that file
4412 has not been parsed yet.
4413 Initialize the type only, it will be filled in when
4414 it's definition is parsed. */
4415 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4417 add_pending (fh
, esh
, *tpp
);
4420 /* We used one auxent normally, two if we got a "next one" rf. */
4425 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4426 keeping the symtab sorted */
4428 static struct symbol
*
4429 mylookup_symbol (char *name
, register struct block
*block
,
4430 namespace_enum
namespace, enum address_class
class)
4436 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4438 if (SYMBOL_NAME (sym
)[0] == inc
4439 && SYMBOL_NAMESPACE (sym
) == namespace
4440 && SYMBOL_CLASS (sym
) == class
4441 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4445 block
= BLOCK_SUPERBLOCK (block
);
4447 return mylookup_symbol (name
, block
, namespace, class);
4452 /* Add a new symbol S to a block B.
4453 Infrequently, we will need to reallocate the block to make it bigger.
4454 We only detect this case when adding to top_stack->cur_block, since
4455 that's the only time we know how big the block is. FIXME. */
4458 add_symbol (struct symbol
*s
, struct block
*b
)
4460 int nsyms
= BLOCK_NSYMS (b
)++;
4461 struct block
*origb
;
4462 struct parse_stack
*stackp
;
4464 if (b
== top_stack
->cur_block
&&
4465 nsyms
>= top_stack
->maxsyms
)
4467 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
4468 /* In this case shrink_block is actually grow_block, since
4469 BLOCK_NSYMS(b) is larger than its current size. */
4471 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4473 /* Now run through the stack replacing pointers to the
4474 original block. shrink_block has already done this
4475 for the blockvector and BLOCK_FUNCTION. */
4476 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4478 if (stackp
->cur_block
== origb
)
4480 stackp
->cur_block
= b
;
4481 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4485 BLOCK_SYM (b
, nsyms
) = s
;
4488 /* Add a new block B to a symtab S */
4491 add_block (struct block
*b
, struct symtab
*s
)
4493 struct blockvector
*bv
= BLOCKVECTOR (s
);
4495 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4496 (sizeof (struct blockvector
)
4497 + BLOCKVECTOR_NBLOCKS (bv
)
4498 * sizeof (bv
->block
)));
4499 if (bv
!= BLOCKVECTOR (s
))
4500 BLOCKVECTOR (s
) = bv
;
4502 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4505 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4506 MIPS' linenumber encoding might need more than one byte
4507 to describe it, LAST is used to detect these continuation lines.
4509 Combining lines with the same line number seems like a bad idea.
4510 E.g: There could be a line number entry with the same line number after the
4511 prologue and GDB should not ignore it (this is a better way to find
4512 a prologue than mips_skip_prologue).
4513 But due to the compressed line table format there are line number entries
4514 for the same line which are needed to bridge the gap to the next
4515 line number entry. These entries have a bogus address info with them
4516 and we are unable to tell them from intended duplicate line number
4518 This is another reason why -ggdb debugging format is preferable. */
4521 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4523 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4524 Change them to something sensible. */
4528 last
= -2; /* make sure we record first line */
4530 if (last
== lineno
) /* skip continuation lines */
4533 lt
->item
[lt
->nitems
].line
= lineno
;
4534 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4538 /* Sorting and reordering procedures */
4540 /* Blocks with a smaller low bound should come first */
4543 compare_blocks (const void *arg1
, const void *arg2
)
4545 register int addr_diff
;
4546 struct block
**b1
= (struct block
**) arg1
;
4547 struct block
**b2
= (struct block
**) arg2
;
4549 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4551 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4555 /* Sort the blocks of a symtab S.
4556 Reorder the blocks in the blockvector by code-address,
4557 as required by some MI search routines */
4560 sort_blocks (struct symtab
*s
)
4562 struct blockvector
*bv
= BLOCKVECTOR (s
);
4564 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4567 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4568 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4569 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4570 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4574 * This is very unfortunate: normally all functions are compiled in
4575 * the order they are found, but if the file is compiled -O3 things
4576 * are very different. It would be nice to find a reliable test
4577 * to detect -O3 images in advance.
4579 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4580 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4581 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4582 sizeof (struct block
*),
4586 register CORE_ADDR high
= 0;
4587 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4589 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4590 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4591 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4592 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4595 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4596 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4598 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4599 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4600 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4601 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4605 /* Constructor/restructor/destructor procedures */
4607 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4608 MAXSYMS and linenumbers MAXLINES we'll put in it */
4610 static struct symtab
*
4611 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4613 struct symtab
*s
= allocate_symtab (name
, objfile
);
4615 LINETABLE (s
) = new_linetable (maxlines
);
4617 /* All symtabs must have at least two blocks */
4618 BLOCKVECTOR (s
) = new_bvect (2);
4619 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4620 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4621 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4622 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4624 s
->free_code
= free_linetable
;
4625 s
->debugformat
= obsavestring ("ECOFF", 5,
4626 &objfile
->symbol_obstack
);
4630 /* Allocate a new partial_symtab NAME */
4632 static struct partial_symtab
*
4633 new_psymtab (char *name
, struct objfile
*objfile
)
4635 struct partial_symtab
*psymtab
;
4637 psymtab
= allocate_psymtab (name
, objfile
);
4638 psymtab
->section_offsets
= objfile
->section_offsets
;
4640 /* Keep a backpointer to the file's symbols */
4642 psymtab
->read_symtab_private
= ((char *)
4643 obstack_alloc (&objfile
->psymbol_obstack
,
4644 sizeof (struct symloc
)));
4645 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4646 CUR_BFD (psymtab
) = cur_bfd
;
4647 DEBUG_SWAP (psymtab
) = debug_swap
;
4648 DEBUG_INFO (psymtab
) = debug_info
;
4649 PENDING_LIST (psymtab
) = pending_list
;
4651 /* The way to turn this into a symtab is to call... */
4652 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4657 /* Allocate a linetable array of the given SIZE. Since the struct
4658 already includes one item, we subtract one when calculating the
4659 proper size to allocate. */
4661 static struct linetable
*
4662 new_linetable (int size
)
4664 struct linetable
*l
;
4666 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4667 l
= (struct linetable
*) xmalloc (size
);
4672 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4673 I am not so sure about the 3.4 ones.
4675 Since the struct linetable already includes one item, we subtract one when
4676 calculating the proper size to allocate. */
4678 static struct linetable
*
4679 shrink_linetable (struct linetable
*lt
)
4682 return (struct linetable
*) xrealloc ((void *) lt
,
4683 (sizeof (struct linetable
)
4685 * sizeof (lt
->item
))));
4688 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4690 static struct blockvector
*
4691 new_bvect (int nblocks
)
4693 struct blockvector
*bv
;
4696 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4697 bv
= (struct blockvector
*) xzalloc (size
);
4699 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4704 /* Allocate and zero a new block of MAXSYMS symbols */
4706 static struct block
*
4707 new_block (int maxsyms
)
4709 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4711 return (struct block
*) xzalloc (size
);
4714 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4715 Shrink_block can also be used by add_symbol to grow a block. */
4717 static struct block
*
4718 shrink_block (struct block
*b
, struct symtab
*s
)
4721 struct blockvector
*bv
= BLOCKVECTOR (s
);
4724 /* Just reallocate it and fix references to the old one */
4726 new = (struct block
*) xrealloc ((void *) b
,
4727 (sizeof (struct block
)
4728 + ((BLOCK_NSYMS (b
) - 1)
4729 * sizeof (struct symbol
*))));
4731 /* FIXME: Not worth hashing this block as it's built. */
4732 /* All callers should have created the block with new_block (), which
4733 would mean it was not previously hashed. Make sure. */
4734 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4736 /* Should chase pointers to old one. Fortunately, that`s just
4737 the block`s function and inferior blocks */
4738 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4739 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4740 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4741 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4742 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4743 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4744 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4748 /* Create a new symbol with printname NAME */
4750 static struct symbol
*
4751 new_symbol (char *name
)
4753 struct symbol
*s
= ((struct symbol
*)
4754 obstack_alloc (¤t_objfile
->symbol_obstack
,
4755 sizeof (struct symbol
)));
4757 memset (s
, 0, sizeof (*s
));
4758 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4759 ¤t_objfile
->symbol_obstack
);
4760 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4761 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4765 /* Create a new type with printname NAME */
4767 static struct type
*
4768 new_type (char *name
)
4772 t
= alloc_type (current_objfile
);
4773 TYPE_NAME (t
) = name
;
4774 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4778 /* Read ECOFF debugging information from a BFD section. This is
4779 called from elfread.c. It parses the section into a
4780 ecoff_debug_info struct, and then lets the rest of the file handle
4784 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4785 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4787 bfd
*abfd
= objfile
->obfd
;
4788 struct ecoff_debug_info
*info
;
4790 info
= ((struct ecoff_debug_info
*)
4791 obstack_alloc (&objfile
->psymbol_obstack
,
4792 sizeof (struct ecoff_debug_info
)));
4794 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4795 error ("Error reading ECOFF debugging information: %s",
4796 bfd_errmsg (bfd_get_error ()));
4798 mdebug_build_psymtabs (objfile
, swap
, info
);
4802 /* Things used for calling functions in the inferior.
4803 These functions are exported to our companion
4804 mips-tdep.c file and are here because they play
4805 with the symbol-table explicitly. */
4807 /* Sigtramp: make sure we have all the necessary information
4808 about the signal trampoline code. Since the official code
4809 from MIPS does not do so, we make up that information ourselves.
4810 If they fix the library (unlikely) this code will neutralize itself. */
4812 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4813 here because it calls functions defined in this file, but perhaps
4814 this could be handled in a better way. Only compile it in when
4815 tm-mips.h is included. */
4820 fixup_sigtramp (void)
4824 struct block
*b
, *b0
= NULL
;
4826 sigtramp_address
= -1;
4828 /* We have to handle the following cases here:
4829 a) The Mips library has a sigtramp label within sigvec.
4830 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4831 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4834 b0
= SYMBOL_BLOCK_VALUE (s
);
4835 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4839 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4840 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4843 /* But maybe this program uses its own version of sigvec */
4847 /* Did we or MIPSco fix the library ? */
4848 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4850 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4851 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4855 sigtramp_address
= SYMBOL_VALUE (s
);
4856 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4858 /* But what symtab does it live in ? */
4859 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4862 * Ok, there goes the fix: turn it into a procedure, with all the
4863 * needed info. Note we make it a nested procedure of sigvec,
4864 * which is the way the (assembly) code is actually written.
4866 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4867 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4868 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4870 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4872 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4874 SYMBOL_BLOCK_VALUE (s
) = b
;
4875 BLOCK_START (b
) = sigtramp_address
;
4876 BLOCK_END (b
) = sigtramp_end
;
4877 BLOCK_FUNCTION (b
) = s
;
4878 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4882 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4884 struct mips_extra_func_info
*e
=
4885 ((struct mips_extra_func_info
*)
4886 xzalloc (sizeof (struct mips_extra_func_info
)));
4888 e
->numargs
= 0; /* the kernel thinks otherwise */
4889 e
->pdr
.frameoffset
= 32;
4890 e
->pdr
.framereg
= SP_REGNUM
;
4891 /* Note that setting pcreg is no longer strictly necessary as
4892 mips_frame_saved_pc is now aware of signal handler frames. */
4893 e
->pdr
.pcreg
= PC_REGNUM
;
4894 e
->pdr
.regmask
= -2;
4895 /* Offset to saved r31, in the sigtramp case the saved registers
4896 are above the frame in the sigcontext.
4897 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4898 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4899 and 32 * 4 bytes for the floating point registers. */
4900 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4901 e
->pdr
.fregmask
= -1;
4902 /* Offset to saved f30 (first saved *double* register). */
4903 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4904 e
->pdr
.isym
= (long) s
;
4905 e
->pdr
.adr
= sigtramp_address
;
4907 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4908 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4909 SYMBOL_VALUE (s
) = (long) e
;
4910 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4911 SYMBOL_CLASS (s
) = LOC_CONST
;
4912 SYMBOL_TYPE (s
) = mdebug_type_void
;
4913 current_objfile
= NULL
;
4916 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4919 #endif /* TM_MIPS_H */
4922 _initialize_mdebugread (void)
4925 init_type (TYPE_CODE_VOID
, 1,
4927 "void", (struct objfile
*) NULL
);
4929 init_type (TYPE_CODE_INT
, 1,
4931 "char", (struct objfile
*) NULL
);
4932 mdebug_type_unsigned_char
=
4933 init_type (TYPE_CODE_INT
, 1,
4935 "unsigned char", (struct objfile
*) NULL
);
4937 init_type (TYPE_CODE_INT
, 2,
4939 "short", (struct objfile
*) NULL
);
4940 mdebug_type_unsigned_short
=
4941 init_type (TYPE_CODE_INT
, 2,
4943 "unsigned short", (struct objfile
*) NULL
);
4944 mdebug_type_int_32
=
4945 init_type (TYPE_CODE_INT
, 4,
4947 "int", (struct objfile
*) NULL
);
4948 mdebug_type_unsigned_int_32
=
4949 init_type (TYPE_CODE_INT
, 4,
4951 "unsigned int", (struct objfile
*) NULL
);
4952 mdebug_type_int_64
=
4953 init_type (TYPE_CODE_INT
, 8,
4955 "int", (struct objfile
*) NULL
);
4956 mdebug_type_unsigned_int_64
=
4957 init_type (TYPE_CODE_INT
, 8,
4959 "unsigned int", (struct objfile
*) NULL
);
4960 mdebug_type_long_32
=
4961 init_type (TYPE_CODE_INT
, 4,
4963 "long", (struct objfile
*) NULL
);
4964 mdebug_type_unsigned_long_32
=
4965 init_type (TYPE_CODE_INT
, 4,
4967 "unsigned long", (struct objfile
*) NULL
);
4968 mdebug_type_long_64
=
4969 init_type (TYPE_CODE_INT
, 8,
4971 "long", (struct objfile
*) NULL
);
4972 mdebug_type_unsigned_long_64
=
4973 init_type (TYPE_CODE_INT
, 8,
4975 "unsigned long", (struct objfile
*) NULL
);
4976 mdebug_type_long_long_64
=
4977 init_type (TYPE_CODE_INT
, 8,
4979 "long long", (struct objfile
*) NULL
);
4980 mdebug_type_unsigned_long_long_64
=
4981 init_type (TYPE_CODE_INT
, 8,
4983 "unsigned long long", (struct objfile
*) NULL
);
4984 mdebug_type_adr_32
=
4985 init_type (TYPE_CODE_PTR
, 4,
4987 "adr_32", (struct objfile
*) NULL
);
4988 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4989 mdebug_type_adr_64
=
4990 init_type (TYPE_CODE_PTR
, 8,
4992 "adr_64", (struct objfile
*) NULL
);
4993 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4995 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4997 "float", (struct objfile
*) NULL
);
4998 mdebug_type_double
=
4999 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5001 "double", (struct objfile
*) NULL
);
5002 mdebug_type_complex
=
5003 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
5005 "complex", (struct objfile
*) NULL
);
5006 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
5007 mdebug_type_double_complex
=
5008 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5010 "double complex", (struct objfile
*) NULL
);
5011 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
5013 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5015 mdebug_type_string
=
5016 init_type (TYPE_CODE_STRING
,
5017 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
5019 (struct objfile
*) NULL
);
5021 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5022 good? Would we be better off with TYPE_CODE_ERROR? Should
5023 TYPE_CODE_ERROR print things in hex if it knows the size? */
5024 mdebug_type_fixed_dec
=
5025 init_type (TYPE_CODE_INT
,
5026 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
5028 (struct objfile
*) NULL
);
5030 mdebug_type_float_dec
=
5031 init_type (TYPE_CODE_ERROR
,
5032 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5033 0, "floating decimal",
5034 (struct objfile
*) NULL
);
5036 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5037 "<function, no debug info>", NULL
);
5038 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5039 nodebug_var_symbol_type
=
5040 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5041 "<variable, no debug info>", NULL
);