1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
7 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
8 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
11 This file is part of GDB.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place - Suite 330,
26 Boston, MA 02111-1307, USA. */
28 /* This module provides the function mdebug_build_psymtabs. It reads
29 ECOFF debugging information into partial symbol tables. The
30 debugging information is read from two structures. A struct
31 ecoff_debug_swap includes the sizes of each ECOFF structure and
32 swapping routines; these are fixed for a particular target. A
33 struct ecoff_debug_info points to the debugging information for a
34 particular object file.
36 ECOFF symbol tables are mostly written in the byte order of the
37 target machine. However, one section of the table (the auxiliary
38 symbol information) is written in the host byte order. There is a
39 bit in the other symbol info which describes which host byte order
40 was used. ECOFF thereby takes the trophy from Intel `b.out' for
41 the most brain-dead adaptation of a file format to byte order.
43 This module can read all four of the known byte-order combinations,
44 on any type of host. */
51 #include "gdb_obstack.h"
53 #include "stabsread.h"
54 #include "complaints.h"
56 #include "gdb_assert.h"
58 #include "dictionary.h"
60 /* These are needed if the tm.h file does not contain the necessary
61 mips specific definitions. */
63 #ifndef MIPS_EFI_SYMBOL_NAME
64 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
65 extern void ecoff_relocate_efi (struct symbol
*, CORE_ADDR
);
67 #include "coff/symconst.h"
68 typedef struct mips_extra_func_info
73 *mips_extra_func_info_t
;
80 #include "gdb_string.h"
84 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
86 #include "libaout.h" /* Private BFD a.out information. */
87 #include "aout/aout64.h"
88 #include "aout/stab_gnu.h" /* STABS information */
90 #include "expression.h"
91 #include "language.h" /* For local_hex_string() */
93 extern void _initialize_mdebugread (void);
95 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
96 We use this define in order to know whether we should override a
97 symbol's ECOFF section with its ELF section. This is necessary in
98 case the symbol's ELF section could not be represented in ECOFF. */
99 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
100 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
103 /* We put a pointer to this structure in the read_symtab_private field
108 /* Index of the FDR that this psymtab represents. */
110 /* The BFD that the psymtab was created from. */
112 const struct ecoff_debug_swap
*debug_swap
;
113 struct ecoff_debug_info
*debug_info
;
114 struct mdebug_pending
**pending_list
;
115 /* Pointer to external symbols for this file. */
117 /* Size of extern_tab. */
119 enum language pst_language
;
122 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
123 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
124 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
125 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
126 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
127 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
129 #define SC_IS_TEXT(sc) ((sc) == scText \
130 || (sc) == scRConst \
133 #define SC_IS_DATA(sc) ((sc) == scData \
138 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
139 #define SC_IS_BSS(sc) ((sc) == scBss)
140 #define SC_IS_SBSS(sc) ((sc) == scSBss)
141 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
143 /* Various complaints about symbol reading that don't abort the process */
145 index_complaint (const char *arg1
)
147 complaint (&symfile_complaints
, "bad aux index at symbol %s", arg1
);
151 unknown_ext_complaint (const char *arg1
)
153 complaint (&symfile_complaints
, "unknown external symbol %s", arg1
);
157 basic_type_complaint (int arg1
, const char *arg2
)
159 complaint (&symfile_complaints
, "cannot map ECOFF basic type 0x%x for %s",
164 bad_tag_guess_complaint (const char *arg1
)
166 complaint (&symfile_complaints
, "guessed tag type of %s incorrectly", arg1
);
170 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
172 complaint (&symfile_complaints
, "bad rfd entry for %s: file %d, index %d",
177 unexpected_type_code_complaint (const char *arg1
)
179 complaint (&symfile_complaints
, "unexpected type code for %s", arg1
);
182 /* Macros and extra defs */
184 /* Puns: hard to find whether -g was used and how */
186 #define MIN_GLEVEL GLEVEL_0
187 #define compare_glevel(a,b) \
188 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
189 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
191 /* Things that really are local to this module */
193 /* Remember what we deduced to be the source language of this psymtab. */
195 static enum language psymtab_language
= language_unknown
;
201 /* How to parse debugging information for CUR_BFD. */
203 static const struct ecoff_debug_swap
*debug_swap
;
205 /* Pointers to debugging information for CUR_BFD. */
207 static struct ecoff_debug_info
*debug_info
;
209 /* Pointer to current file decriptor record, and its index */
214 /* Index of current symbol */
218 /* Note how much "debuggable" this image is. We would like
219 to see at least one FDR with full symbols */
221 static int max_gdbinfo
;
222 static int max_glevel
;
224 /* When examining .o files, report on undefined symbols */
226 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
228 /* Pseudo symbol to use when putting stabs into the symbol table. */
230 static char stabs_symbol
[] = STABS_SYMBOL
;
232 /* Types corresponding to mdebug format bt* basic types. */
234 static struct type
*mdebug_type_void
;
235 static struct type
*mdebug_type_char
;
236 static struct type
*mdebug_type_short
;
237 static struct type
*mdebug_type_int_32
;
238 #define mdebug_type_int mdebug_type_int_32
239 static struct type
*mdebug_type_int_64
;
240 static struct type
*mdebug_type_long_32
;
241 static struct type
*mdebug_type_long_64
;
242 static struct type
*mdebug_type_long_long_64
;
243 static struct type
*mdebug_type_unsigned_char
;
244 static struct type
*mdebug_type_unsigned_short
;
245 static struct type
*mdebug_type_unsigned_int_32
;
246 static struct type
*mdebug_type_unsigned_int_64
;
247 static struct type
*mdebug_type_unsigned_long_32
;
248 static struct type
*mdebug_type_unsigned_long_64
;
249 static struct type
*mdebug_type_unsigned_long_long_64
;
250 static struct type
*mdebug_type_adr_32
;
251 static struct type
*mdebug_type_adr_64
;
252 static struct type
*mdebug_type_float
;
253 static struct type
*mdebug_type_double
;
254 static struct type
*mdebug_type_complex
;
255 static struct type
*mdebug_type_double_complex
;
256 static struct type
*mdebug_type_fixed_dec
;
257 static struct type
*mdebug_type_float_dec
;
258 static struct type
*mdebug_type_string
;
260 /* Types for symbols from files compiled without debugging info. */
262 static struct type
*nodebug_func_symbol_type
;
263 static struct type
*nodebug_var_symbol_type
;
265 /* Nonzero if we have seen ecoff debugging info for a file. */
267 static int found_ecoff_debugging_info
;
269 /* Forward declarations */
271 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
274 static void parse_partial_symbols (struct objfile
*);
276 static int has_opaque_xref (FDR
*, SYMR
*);
278 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
279 char **, int, char *);
281 static struct symbol
*new_symbol (char *);
283 static struct type
*new_type (char *);
285 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
287 static struct block
*new_block (enum block_type
);
289 static struct symtab
*new_symtab (char *, int, struct objfile
*);
291 static struct linetable
*new_linetable (int);
293 static struct blockvector
*new_bvect (int);
295 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
298 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
301 static void sort_blocks (struct symtab
*);
303 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
305 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
307 static void add_block (struct block
*, struct symtab
*);
309 static void add_symbol (struct symbol
*, struct block
*);
311 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
313 static struct linetable
*shrink_linetable (struct linetable
*);
315 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
318 static char *mdebug_next_symbol_text (struct objfile
*);
320 /* Allocate zeroed memory */
323 xzalloc (unsigned int size
)
325 void *p
= xmalloc (size
);
331 /* Exported procedure: Builds a symtab from the PST partial one.
332 Restores the environment in effect when PST was created, delegates
333 most of the work to an ancillary procedure, and sorts
334 and reorders the symtab list at the end */
337 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
345 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
346 gdb_flush (gdb_stdout
);
349 next_symbol_text_func
= mdebug_next_symbol_text
;
351 psymtab_to_symtab_1 (pst
, pst
->filename
);
353 /* Match with global symbols. This only needs to be done once,
354 after all of the symtabs and dependencies have been read in. */
355 scan_file_globals (pst
->objfile
);
358 printf_filtered ("done.\n");
361 /* File-level interface functions */
363 /* Find a file descriptor given its index RF relative to a file CF */
366 get_rfd (int cf
, int rf
)
372 fdrs
= debug_info
->fdr
;
374 /* Object files do not have the RFD table, all refs are absolute */
377 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
378 ((char *) debug_info
->external_rfd
380 * debug_swap
->external_rfd_size
)),
385 /* Return a safer print NAME for a file descriptor */
391 return "<stripped file>";
394 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
398 /* Read in and parse the symtab of the file OBJFILE. Symbols from
399 different sections are relocated via the SECTION_OFFSETS. */
402 mdebug_build_psymtabs (struct objfile
*objfile
,
403 const struct ecoff_debug_swap
*swap
,
404 struct ecoff_debug_info
*info
)
406 cur_bfd
= objfile
->obfd
;
410 stabsread_new_init ();
411 buildsym_new_init ();
412 free_header_files ();
413 init_header_files ();
415 /* Make sure all the FDR information is swapped in. */
416 if (info
->fdr
== (FDR
*) NULL
)
422 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
423 (info
->symbolic_header
.ifdMax
425 fdr_src
= info
->external_fdr
;
427 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
429 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
430 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
433 parse_partial_symbols (objfile
);
436 /* Check to make sure file was compiled with -g. If not, warn the
437 user of this limitation. */
438 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
440 if (max_gdbinfo
== 0)
441 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
443 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
444 gdb_flush (gdb_stdout
);
449 /* Local utilities */
451 /* Map of FDR indexes to partial symtabs */
455 struct partial_symtab
*pst
; /* the psymtab proper */
456 long n_globals
; /* exported globals (external symbols) */
457 long globals_offset
; /* cumulative */
461 /* Utility stack, used to nest procedures and blocks properly.
462 It is a doubly linked list, to avoid too many alloc/free.
463 Since we might need it quite a few times it is NOT deallocated
466 static struct parse_stack
468 struct parse_stack
*next
, *prev
;
469 struct symtab
*cur_st
; /* Current symtab. */
470 struct block
*cur_block
; /* Block in it. */
472 /* What are we parsing. stFile, or stBlock are for files and
473 blocks. stProc or stStaticProc means we have seen the start of a
474 procedure, but not the start of the block within in. When we see
475 the start of that block, we change it to stNil, without pushing a
476 new block, i.e. stNil means both a procedure and a block. */
480 struct type
*cur_type
; /* Type we parse fields for. */
481 int cur_field
; /* Field number in cur_type. */
482 CORE_ADDR procadr
; /* Start addres of this procedure */
483 int numargs
; /* Its argument count */
486 *top_stack
; /* Top stack ptr */
489 /* Enter a new lexical context */
492 push_parse_stack (void)
494 struct parse_stack
*new;
496 /* Reuse frames if possible */
497 if (top_stack
&& top_stack
->prev
)
498 new = top_stack
->prev
;
500 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
501 /* Initialize new frame with previous content */
504 struct parse_stack
*prev
= new->prev
;
507 top_stack
->prev
= new;
509 new->next
= top_stack
;
514 /* Exit a lexical context */
517 pop_parse_stack (void)
522 top_stack
= top_stack
->next
;
526 /* Cross-references might be to things we haven't looked at
527 yet, e.g. type references. To avoid too many type
528 duplications we keep a quick fixup table, an array
529 of lists of references indexed by file descriptor */
531 struct mdebug_pending
533 struct mdebug_pending
*next
; /* link */
534 char *s
; /* the unswapped symbol */
535 struct type
*t
; /* its partial type descriptor */
539 /* The pending information is kept for an entire object file, and used
540 to be in the sym_private field. I took it out when I split
541 mdebugread from mipsread, because this might not be the only type
542 of symbols read from an object file. Instead, we allocate the
543 pending information table when we create the partial symbols, and
544 we store a pointer to the single table in each psymtab. */
546 static struct mdebug_pending
**pending_list
;
548 /* Check whether we already saw symbol SH in file FH */
550 static struct mdebug_pending
*
551 is_pending_symbol (FDR
*fh
, char *sh
)
553 int f_idx
= fh
- debug_info
->fdr
;
554 struct mdebug_pending
*p
;
556 /* Linear search is ok, list is typically no more than 10 deep */
557 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
563 /* Add a new symbol SH of type T */
566 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
568 int f_idx
= fh
- debug_info
->fdr
;
569 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
571 /* Make sure we do not make duplicates */
574 p
= ((struct mdebug_pending
*)
575 obstack_alloc (¤t_objfile
->objfile_obstack
,
576 sizeof (struct mdebug_pending
)));
579 p
->next
= pending_list
[f_idx
];
580 pending_list
[f_idx
] = p
;
585 /* Parsing Routines proper. */
587 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
588 For blocks, procedures and types we open a new lexical context.
589 This is basically just a big switch on the symbol's type. Argument
590 AX is the base pointer of aux symbols for this file (fh->iauxBase).
591 EXT_SH points to the unswapped symbol, which is needed for struct,
592 union, etc., types; it is NULL for an EXTR. BIGEND says whether
593 aux symbols are big-endian or little-endian. Return count of
594 SYMR's handled (normally one). */
597 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
598 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
600 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
601 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
605 struct mdebug_pending
*pend
;
609 enum address_class
class;
611 long svalue
= sh
->value
;
614 if (ext_sh
== (char *) NULL
)
615 name
= debug_info
->ssext
+ sh
->iss
;
617 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
623 /* Do not relocate relative values.
624 The value of a stEnd symbol is the displacement from the
625 corresponding start symbol value.
626 The value of a stBlock symbol is the displacement from the
627 procedure address. */
628 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
629 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
636 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
640 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
649 case stGlobal
: /* external symbol, goes into global block */
651 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
653 s
= new_symbol (name
);
654 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
657 case stStatic
: /* static data, goes into current block. */
659 b
= top_stack
->cur_block
;
660 s
= new_symbol (name
);
661 if (SC_IS_COMMON (sh
->sc
))
663 /* It is a FORTRAN common block. At least for SGI Fortran the
664 address is not in the symbol; we need to fix it later in
665 scan_file_globals. */
666 int bucket
= hashname (DEPRECATED_SYMBOL_NAME (s
));
667 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
668 global_sym_chain
[bucket
] = s
;
671 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
674 case stLocal
: /* local variable, goes into current block */
675 if (sh
->sc
== scRegister
)
677 class = LOC_REGISTER
;
678 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
682 b
= top_stack
->cur_block
;
683 s
= new_symbol (name
);
684 SYMBOL_VALUE (s
) = svalue
;
686 data
: /* Common code for symbols describing data */
687 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
688 SYMBOL_CLASS (s
) = class;
691 /* Type could be missing if file is compiled without debugging info. */
692 if (SC_IS_UNDEF (sh
->sc
)
693 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
694 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
696 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
697 /* Value of a data symbol is its memory address */
700 case stParam
: /* arg to procedure, goes into current block */
702 found_ecoff_debugging_info
= 1;
703 top_stack
->numargs
++;
705 /* Special GNU C++ name. */
706 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
707 name
= "this"; /* FIXME, not alloc'd in obstack */
708 s
= new_symbol (name
);
710 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
714 /* Pass by value in register. */
715 SYMBOL_CLASS (s
) = LOC_REGPARM
;
716 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
719 /* Pass by reference on stack. */
720 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
723 /* Pass by reference in register. */
724 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
725 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
728 /* Pass by value on stack. */
729 SYMBOL_CLASS (s
) = LOC_ARG
;
732 SYMBOL_VALUE (s
) = svalue
;
733 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
734 add_symbol (s
, top_stack
->cur_block
);
737 case stLabel
: /* label, goes into current block */
738 s
= new_symbol (name
);
739 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* so that it can be used */
740 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
741 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
742 SYMBOL_TYPE (s
) = mdebug_type_int
;
743 add_symbol (s
, top_stack
->cur_block
);
746 case stProc
: /* Procedure, usually goes into global block */
747 case stStaticProc
: /* Static procedure, goes into current block */
748 /* For stProc symbol records, we need to check the storage class
749 as well, as only (stProc, scText) entries represent "real"
750 procedures - See the Compaq document titled "Object File /
751 Symbol Table Format Specification" for more information.
752 If the storage class is not scText, we discard the whole block
753 of symbol records for this stProc. */
754 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
756 char *ext_tsym
= ext_sh
;
757 int keep_counting
= 1;
760 while (keep_counting
)
762 ext_tsym
+= external_sym_size
;
763 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
773 complaint (&symfile_complaints
,
774 "unknown symbol type 0x%x", sh
->st
);
780 s
= new_symbol (name
);
781 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
782 SYMBOL_CLASS (s
) = LOC_BLOCK
;
783 /* Type of the return value */
784 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
788 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
789 if (strcmp (name
, "malloc") == 0
790 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
792 /* I don't know why, but, at least under Alpha GNU/Linux,
793 when linking against a malloc without debugging
794 symbols, its read as a function returning void---this
795 is bad because it means we cannot call functions with
796 string arguments interactively; i.e., "call
797 printf("howdy\n")" would fail with the error message
798 "program has no memory available". To avoid this, we
799 patch up the type and make it void*
800 instead. (davidm@azstarnet.com)
802 t
= make_pointer_type (t
, NULL
);
805 b
= top_stack
->cur_block
;
806 if (sh
->st
== stProc
)
808 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
809 /* The next test should normally be true, but provides a
810 hook for nested functions (which we don't want to make
812 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
813 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
814 /* Irix 5 sometimes has duplicate names for the same
815 function. We want to add such names up at the global
816 level, not as a nested function. */
817 else if (sh
->value
== top_stack
->procadr
)
818 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
822 /* Make a type for the procedure itself */
823 SYMBOL_TYPE (s
) = lookup_function_type (t
);
825 /* All functions in C++ have prototypes. For C we don't have enough
826 information in the debug info. */
827 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
828 TYPE_FLAGS (SYMBOL_TYPE (s
)) |= TYPE_FLAG_PROTOTYPED
;
830 /* Create and enter a new lexical context */
831 b
= new_block (FUNCTION_BLOCK
);
832 SYMBOL_BLOCK_VALUE (s
) = b
;
833 BLOCK_FUNCTION (b
) = s
;
834 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
835 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
836 add_block (b
, top_stack
->cur_st
);
838 /* Not if we only have partial info */
839 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
843 top_stack
->cur_block
= b
;
844 top_stack
->blocktype
= sh
->st
;
845 top_stack
->cur_type
= SYMBOL_TYPE (s
);
846 top_stack
->cur_field
= -1;
847 top_stack
->procadr
= sh
->value
;
848 top_stack
->numargs
= 0;
851 /* Beginning of code for structure, union, and enum definitions.
852 They all share a common set of local variables, defined here. */
854 enum type_code type_code
;
860 case stStruct
: /* Start a block defining a struct type */
861 type_code
= TYPE_CODE_STRUCT
;
862 goto structured_common
;
864 case stUnion
: /* Start a block defining a union type */
865 type_code
= TYPE_CODE_UNION
;
866 goto structured_common
;
868 case stEnum
: /* Start a block defining an enum type */
869 type_code
= TYPE_CODE_ENUM
;
870 goto structured_common
;
872 case stBlock
: /* Either a lexical block, or some type */
873 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
874 goto case_stBlock_code
; /* Lexical block */
876 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
878 /* Common code for handling struct, union, enum, and/or as-yet-
879 unknown-type blocks of info about structured data. `type_code'
880 has been set to the proper TYPE_CODE, if we know it. */
882 found_ecoff_debugging_info
= 1;
884 top_stack
->blocktype
= stBlock
;
886 /* First count the number of fields and the highest value. */
889 for (ext_tsym
= ext_sh
+ external_sym_size
;
891 ext_tsym
+= external_sym_size
)
895 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
900 /* C++ encodes class types as structures where there the
901 methods are encoded as stProc. The scope of stProc
902 symbols also ends with stEnd, thus creating a risk of
903 taking the wrong stEnd symbol record as the end of
904 the current struct, which would cause GDB to undercount
905 the real number of fields in this struct. To make sure
906 we really reached the right stEnd symbol record, we
907 check the associated name, and match it against the
908 struct name. Since method names are mangled while
909 the class name is not, there is no risk of having a
910 method whose name is identical to the class name
911 (in particular constructor method names are different
912 from the class name). There is therefore no risk that
913 this check stops the count on the StEnd of a method.
915 Also, assume that we're really at the end when tsym.iss
917 if (tsym
.iss
== issNull
918 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
924 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
926 /* If the type of the member is Nil (or Void),
927 without qualifiers, assume the tag is an
929 Alpha cc -migrate enums are recognized by a zero
930 index and a zero symbol value.
931 DU 4.0 cc enums are recognized by a member type of
932 btEnum without qualifiers and a zero symbol value. */
933 if (tsym
.index
== indexNil
934 || (tsym
.index
== 0 && sh
->value
== 0))
935 type_code
= TYPE_CODE_ENUM
;
938 (*debug_swap
->swap_tir_in
) (bigend
,
939 &ax
[tsym
.index
].a_ti
,
941 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
942 || (tir
.bt
== btEnum
&& sh
->value
== 0))
944 type_code
= TYPE_CODE_ENUM
;
948 if (tsym
.value
> max_value
)
949 max_value
= tsym
.value
;
958 /* This is a no-op; is it trying to tell us something
959 we should be checking? */
960 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
964 /* This is something like a struct within a
965 struct. Skip over the fields of the inner
966 struct. The -1 is because the for loop will
967 increment ext_tsym. */
968 ext_tsym
= ((char *) debug_info
->external_sym
969 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
970 * external_sym_size
));
976 /* mips cc puts out a typedef for struct x if it is not yet
977 defined when it encounters
978 struct y { struct x *xp; };
983 /* Irix5 cc puts out a stIndirect for struct x if it is not
984 yet defined when it encounters
985 struct y { struct x *xp; };
990 complaint (&symfile_complaints
,
991 "declaration block contains unhandled symbol type %d",
997 /* In an stBlock, there is no way to distinguish structs,
998 unions, and enums at this point. This is a bug in the
999 original design (that has been fixed with the recent
1000 addition of the stStruct, stUnion, and stEnum symbol
1001 types.) The way you can tell is if/when you see a variable
1002 or field of that type. In that case the variable's type
1003 (in the AUX table) says if the type is struct, union, or
1004 enum, and points back to the stBlock here. So you can
1005 patch the tag kind up later - but only if there actually is
1006 a variable or field of that type.
1008 So until we know for sure, we will guess at this point.
1010 If the first member has index==indexNil or a void type,
1011 assume we have an enumeration.
1012 Otherwise, if there is more than one member, and all
1013 the members have offset 0, assume we have a union.
1014 Otherwise, assume we have a struct.
1016 The heuristic could guess wrong in the case of of an
1017 enumeration with no members or a union with one (or zero)
1018 members, or when all except the last field of a struct have
1019 width zero. These are uncommon and/or illegal situations,
1020 and in any case guessing wrong probably doesn't matter
1023 But if we later do find out we were wrong, we fixup the tag
1024 kind. Members of an enumeration must be handled
1025 differently from struct/union fields, and that is harder to
1026 patch up, but luckily we shouldn't need to. (If there are
1027 any enumeration members, we can tell for sure it's an enum
1030 if (type_code
== TYPE_CODE_UNDEF
)
1032 if (nfields
> 1 && max_value
== 0)
1033 type_code
= TYPE_CODE_UNION
;
1035 type_code
= TYPE_CODE_STRUCT
;
1038 /* Create a new type or use the pending type. */
1039 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1040 if (pend
== (struct mdebug_pending
*) NULL
)
1042 t
= new_type (NULL
);
1043 add_pending (cur_fdr
, ext_sh
, t
);
1048 /* Do not set the tag name if it is a compiler generated tag name
1049 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1050 Alpha cc puts out an sh->iss of zero for those. */
1051 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1052 TYPE_TAG_NAME (t
) = NULL
;
1054 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->objfile_obstack
,
1057 TYPE_CODE (t
) = type_code
;
1058 TYPE_LENGTH (t
) = sh
->value
;
1059 TYPE_NFIELDS (t
) = nfields
;
1060 TYPE_FIELDS (t
) = f
= ((struct field
*)
1062 nfields
* sizeof (struct field
)));
1064 if (type_code
== TYPE_CODE_ENUM
)
1066 int unsigned_enum
= 1;
1068 /* This is a non-empty enum. */
1070 /* DEC c89 has the number of enumerators in the sh.value field,
1071 not the type length, so we have to compensate for that
1072 incompatibility quirk.
1073 This might do the wrong thing for an enum with one or two
1074 enumerators and gcc -gcoff -fshort-enums, but these cases
1075 are hopefully rare enough.
1076 Alpha cc -migrate has a sh.value field of zero, we adjust
1078 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1079 || TYPE_LENGTH (t
) == 0)
1080 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1081 for (ext_tsym
= ext_sh
+ external_sym_size
;
1083 ext_tsym
+= external_sym_size
)
1086 struct symbol
*enum_sym
;
1088 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1090 if (tsym
.st
!= stMember
)
1093 FIELD_BITPOS (*f
) = tsym
.value
;
1094 FIELD_TYPE (*f
) = t
;
1095 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1096 FIELD_BITSIZE (*f
) = 0;
1097 FIELD_STATIC_KIND (*f
) = 0;
1099 enum_sym
= ((struct symbol
*)
1100 obstack_alloc (¤t_objfile
->objfile_obstack
,
1101 sizeof (struct symbol
)));
1102 memset (enum_sym
, 0, sizeof (struct symbol
));
1103 DEPRECATED_SYMBOL_NAME (enum_sym
) =
1104 obsavestring (f
->name
, strlen (f
->name
),
1105 ¤t_objfile
->objfile_obstack
);
1106 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1107 SYMBOL_TYPE (enum_sym
) = t
;
1108 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1109 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1110 if (SYMBOL_VALUE (enum_sym
) < 0)
1112 add_symbol (enum_sym
, top_stack
->cur_block
);
1114 /* Skip the stMembers that we've handled. */
1119 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1121 /* make this the current type */
1122 top_stack
->cur_type
= t
;
1123 top_stack
->cur_field
= 0;
1125 /* Do not create a symbol for alpha cc unnamed structs. */
1129 /* gcc puts out an empty struct for an opaque struct definitions,
1130 do not create a symbol for it either. */
1131 if (TYPE_NFIELDS (t
) == 0)
1133 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1137 s
= new_symbol (name
);
1138 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1139 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1140 SYMBOL_VALUE (s
) = 0;
1141 SYMBOL_TYPE (s
) = t
;
1142 add_symbol (s
, top_stack
->cur_block
);
1145 /* End of local variables shared by struct, union, enum, and
1146 block (as yet unknown struct/union/enum) processing. */
1150 found_ecoff_debugging_info
= 1;
1151 /* beginnning of (code) block. Value of symbol
1152 is the displacement from procedure start */
1153 push_parse_stack ();
1155 /* Do not start a new block if this is the outermost block of a
1156 procedure. This allows the LOC_BLOCK symbol to point to the
1157 block with the local variables, so funcname::var works. */
1158 if (top_stack
->blocktype
== stProc
1159 || top_stack
->blocktype
== stStaticProc
)
1161 top_stack
->blocktype
= stNil
;
1165 top_stack
->blocktype
= stBlock
;
1166 b
= new_block (NON_FUNCTION_BLOCK
);
1167 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1168 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1169 top_stack
->cur_block
= b
;
1170 add_block (b
, top_stack
->cur_st
);
1173 case stEnd
: /* end (of anything) */
1174 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1176 /* Finished with type */
1177 top_stack
->cur_type
= 0;
1179 else if (sh
->sc
== scText
&&
1180 (top_stack
->blocktype
== stProc
||
1181 top_stack
->blocktype
== stStaticProc
))
1183 /* Finished with procedure */
1184 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1185 struct mips_extra_func_info
*e
;
1186 struct block
*b
= top_stack
->cur_block
;
1187 struct type
*ftype
= top_stack
->cur_type
;
1190 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1192 /* Make up special symbol to contain procedure specific info */
1193 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1194 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1195 SYMBOL_CLASS (s
) = LOC_CONST
;
1196 SYMBOL_TYPE (s
) = mdebug_type_void
;
1197 e
= ((struct mips_extra_func_info
*)
1198 obstack_alloc (¤t_objfile
->objfile_obstack
,
1199 sizeof (struct mips_extra_func_info
)));
1200 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1201 SYMBOL_VALUE (s
) = (long) e
;
1202 e
->numargs
= top_stack
->numargs
;
1203 e
->pdr
.framereg
= -1;
1204 add_symbol (s
, top_stack
->cur_block
);
1206 /* f77 emits proc-level with address bounds==[0,0],
1207 So look for such child blocks, and patch them. */
1208 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1210 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1211 if (BLOCK_SUPERBLOCK (b_bad
) == b
1212 && BLOCK_START (b_bad
) == top_stack
->procadr
1213 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1215 BLOCK_START (b_bad
) = BLOCK_START (b
);
1216 BLOCK_END (b_bad
) = BLOCK_END (b
);
1220 if (TYPE_NFIELDS (ftype
) <= 0)
1222 /* No parameter type information is recorded with the function's
1223 type. Set that from the type of the parameter symbols. */
1224 int nparams
= top_stack
->numargs
;
1230 struct dict_iterator iter
;
1231 TYPE_NFIELDS (ftype
) = nparams
;
1232 TYPE_FIELDS (ftype
) = (struct field
*)
1233 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1236 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1238 if (iparams
== nparams
)
1241 switch (SYMBOL_CLASS (sym
))
1246 case LOC_REGPARM_ADDR
:
1247 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1248 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1258 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1260 /* End of (code) block. The value of the symbol is the
1261 displacement from the procedure`s start address of the
1262 end of this block. */
1263 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1265 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1267 /* End of outermost block. Pop parse stack and ignore. The
1268 following stEnd of stProc will take care of the block. */
1271 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1273 /* End of file. Pop parse stack and ignore. Higher
1274 level code deals with this. */
1278 complaint (&symfile_complaints
,
1279 "stEnd with storage class %d not handled", sh
->sc
);
1281 pop_parse_stack (); /* restore previous lexical context */
1284 case stMember
: /* member of struct or union */
1285 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1286 FIELD_NAME (*f
) = name
;
1287 FIELD_BITPOS (*f
) = sh
->value
;
1289 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1290 FIELD_BITSIZE (*f
) = bitsize
;
1291 FIELD_STATIC_KIND (*f
) = 0;
1294 case stIndirect
: /* forward declaration on Irix5 */
1295 /* Forward declarations from Irix5 cc are handled by cross_ref,
1299 case stTypedef
: /* type definition */
1300 found_ecoff_debugging_info
= 1;
1302 /* Typedefs for forward declarations and opaque structs from alpha cc
1303 are handled by cross_ref, skip them. */
1307 /* Parse the type or use the pending type. */
1308 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1309 if (pend
== (struct mdebug_pending
*) NULL
)
1311 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1312 add_pending (cur_fdr
, ext_sh
, t
);
1317 /* mips cc puts out a typedef with the name of the struct for forward
1318 declarations. These should not go into the symbol table and
1319 TYPE_NAME should not be set for them.
1320 They can't be distinguished from an intentional typedef to
1321 the same name however:
1323 struct x { int ix; int jx; };
1327 struct xx {int ixx; int jxx; };
1328 generates a cross referencing stTypedef for x and xx.
1329 The user visible effect of this is that the type of a pointer
1330 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1331 The problem is fixed with alpha cc and Irix5 cc. */
1333 /* However if the typedef cross references to an opaque aggregate, it
1334 is safe to omit it from the symbol table. */
1336 if (has_opaque_xref (cur_fdr
, sh
))
1338 s
= new_symbol (name
);
1339 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1340 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1341 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1342 SYMBOL_TYPE (s
) = t
;
1343 add_symbol (s
, top_stack
->cur_block
);
1345 /* Incomplete definitions of structs should not get a name. */
1346 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1347 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1348 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1349 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1351 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1352 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1354 /* If we are giving a name to a type such as "pointer to
1355 foo" or "function returning foo", we better not set
1356 the TYPE_NAME. If the program contains "typedef char
1357 *caddr_t;", we don't want all variables of type char
1358 * to print as caddr_t. This is not just a
1359 consequence of GDB's type management; CC and GCC (at
1360 least through version 2.4) both output variables of
1361 either type char * or caddr_t with the type
1362 refering to the stTypedef symbol for caddr_t. If a future
1363 compiler cleans this up it GDB is not ready for it
1364 yet, but if it becomes ready we somehow need to
1365 disable this check (without breaking the PCC/GCC2.4
1370 Fortunately, this check seems not to be necessary
1371 for anything except pointers or functions. */
1374 TYPE_NAME (SYMBOL_TYPE (s
)) = DEPRECATED_SYMBOL_NAME (s
);
1378 case stFile
: /* file name */
1379 push_parse_stack ();
1380 top_stack
->blocktype
= sh
->st
;
1383 /* I`ve never seen these for C */
1385 break; /* register relocation */
1387 break; /* forwarding address */
1389 break; /* constant */
1391 complaint (&symfile_complaints
, "unknown symbol type 0x%x", sh
->st
);
1398 /* Parse the type information provided in the raw AX entries for
1399 the symbol SH. Return the bitfield size in BS, in case.
1400 We must byte-swap the AX entries before we use them; BIGEND says whether
1401 they are big-endian or little-endian (from fh->fBigendian). */
1403 static struct type
*
1404 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1405 int bigend
, char *sym_name
)
1407 /* Null entries in this map are treated specially */
1408 static struct type
**map_bt
[] =
1410 &mdebug_type_void
, /* btNil */
1411 &mdebug_type_adr_32
, /* btAdr */
1412 &mdebug_type_char
, /* btChar */
1413 &mdebug_type_unsigned_char
, /* btUChar */
1414 &mdebug_type_short
, /* btShort */
1415 &mdebug_type_unsigned_short
, /* btUShort */
1416 &mdebug_type_int_32
, /* btInt */
1417 &mdebug_type_unsigned_int_32
, /* btUInt */
1418 &mdebug_type_long_32
, /* btLong */
1419 &mdebug_type_unsigned_long_32
, /* btULong */
1420 &mdebug_type_float
, /* btFloat */
1421 &mdebug_type_double
, /* btDouble */
1428 &mdebug_type_complex
, /* btComplex */
1429 &mdebug_type_double_complex
, /* btDComplex */
1431 &mdebug_type_fixed_dec
, /* btFixedDec */
1432 &mdebug_type_float_dec
, /* btFloatDec */
1433 &mdebug_type_string
, /* btString */
1436 &mdebug_type_void
, /* btVoid */
1437 0, /* DEC C++: Pointer to member */
1438 0, /* DEC C++: Virtual function table */
1439 0, /* DEC C++: Class (Record) */
1440 &mdebug_type_long_64
, /* btLong64 */
1441 &mdebug_type_unsigned_long_64
, /* btULong64 */
1442 &mdebug_type_long_long_64
, /* btLongLong64 */
1443 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1444 &mdebug_type_adr_64
, /* btAdr64 */
1445 &mdebug_type_int_64
, /* btInt64 */
1446 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1450 struct type
*tp
= 0;
1451 enum type_code type_code
= TYPE_CODE_UNDEF
;
1453 /* Handle undefined types, they have indexNil. */
1454 if (aux_index
== indexNil
)
1455 return mdebug_type_int
;
1457 /* Handle corrupt aux indices. */
1458 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1460 index_complaint (sym_name
);
1461 return mdebug_type_int
;
1465 /* Use aux as a type information record, map its basic type. */
1466 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1467 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1469 basic_type_complaint (t
->bt
, sym_name
);
1470 return mdebug_type_int
;
1474 tp
= *map_bt
[t
->bt
];
1479 /* Cannot use builtin types -- build our own */
1483 type_code
= TYPE_CODE_STRUCT
;
1486 type_code
= TYPE_CODE_UNION
;
1489 type_code
= TYPE_CODE_ENUM
;
1492 type_code
= TYPE_CODE_RANGE
;
1495 type_code
= TYPE_CODE_SET
;
1498 /* alpha cc -migrate uses this for typedefs. The true type will
1499 be obtained by crossreferencing below. */
1500 type_code
= TYPE_CODE_ERROR
;
1503 /* alpha cc uses this for typedefs. The true type will be
1504 obtained by crossreferencing below. */
1505 type_code
= TYPE_CODE_ERROR
;
1508 basic_type_complaint (t
->bt
, sym_name
);
1509 return mdebug_type_int
;
1513 /* Move on to next aux */
1518 int width
= AUX_GET_WIDTH (bigend
, ax
);
1519 /* Inhibit core dumps if TIR is corrupted. */
1520 if (bs
== (int *) NULL
)
1522 /* Alpha cc -migrate encodes char and unsigned char types
1523 as short and unsigned short types with a field width of 8.
1524 Enum types also have a field width which we ignore for now. */
1525 if (t
->bt
== btShort
&& width
== 8)
1526 tp
= mdebug_type_char
;
1527 else if (t
->bt
== btUShort
&& width
== 8)
1528 tp
= mdebug_type_unsigned_char
;
1529 else if (t
->bt
== btEnum
)
1532 complaint (&symfile_complaints
, "can't handle TIR fBitfield for %s",
1540 /* A btIndirect entry cross references to an aux entry containing
1542 if (t
->bt
== btIndirect
)
1549 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1551 if (rn
->rfd
== 0xfff)
1553 rf
= AUX_GET_ISYM (bigend
, ax
);
1561 complaint (&symfile_complaints
,
1562 "unable to cross ref btIndirect for %s", sym_name
);
1563 return mdebug_type_int
;
1565 xref_fh
= get_rfd (fd
, rf
);
1566 xref_fd
= xref_fh
- debug_info
->fdr
;
1567 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1568 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1571 /* All these types really point to some (common) MIPS type
1572 definition, and only the type-qualifiers fully identify
1573 them. We'll make the same effort at sharing. */
1574 if (t
->bt
== btStruct
||
1578 /* btSet (I think) implies that the name is a tag name, not a typedef
1579 name. This apparently is a MIPS extension for C sets. */
1584 /* Try to cross reference this type, build new type on failure. */
1585 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1586 if (tp
== (struct type
*) NULL
)
1587 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1589 /* DEC c89 produces cross references to qualified aggregate types,
1590 dereference them. */
1591 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1592 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1593 tp
= TYPE_TARGET_TYPE (tp
);
1595 /* Make sure that TYPE_CODE(tp) has an expected type code.
1596 Any type may be returned from cross_ref if file indirect entries
1598 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1599 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1600 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1602 unexpected_type_code_complaint (sym_name
);
1607 /* Usually, TYPE_CODE(tp) is already type_code. The main
1608 exception is if we guessed wrong re struct/union/enum.
1609 But for struct vs. union a wrong guess is harmless, so
1610 don't complain(). */
1611 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1612 && type_code
!= TYPE_CODE_ENUM
)
1613 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1614 && type_code
== TYPE_CODE_ENUM
))
1616 bad_tag_guess_complaint (sym_name
);
1619 if (TYPE_CODE (tp
) != type_code
)
1621 TYPE_CODE (tp
) = type_code
;
1624 /* Do not set the tag name if it is a compiler generated tag name
1625 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1626 if (name
[0] == '.' || name
[0] == '\0')
1627 TYPE_TAG_NAME (tp
) = NULL
;
1628 else if (TYPE_TAG_NAME (tp
) == NULL
1629 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1630 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1631 ¤t_objfile
->objfile_obstack
);
1635 /* All these types really point to some (common) MIPS type
1636 definition, and only the type-qualifiers fully identify
1637 them. We'll make the same effort at sharing.
1638 FIXME: We are not doing any guessing on range types. */
1639 if (t
->bt
== btRange
)
1643 /* Try to cross reference this type, build new type on failure. */
1644 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1645 if (tp
== (struct type
*) NULL
)
1646 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1648 /* Make sure that TYPE_CODE(tp) has an expected type code.
1649 Any type may be returned from cross_ref if file indirect entries
1651 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1653 unexpected_type_code_complaint (sym_name
);
1657 /* Usually, TYPE_CODE(tp) is already type_code. The main
1658 exception is if we guessed wrong re struct/union/enum. */
1659 if (TYPE_CODE (tp
) != type_code
)
1661 bad_tag_guess_complaint (sym_name
);
1662 TYPE_CODE (tp
) = type_code
;
1664 if (TYPE_NAME (tp
) == NULL
1665 || strcmp (TYPE_NAME (tp
), name
) != 0)
1666 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1667 ¤t_objfile
->objfile_obstack
);
1670 if (t
->bt
== btTypedef
)
1674 /* Try to cross reference this type, it should succeed. */
1675 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1676 if (tp
== (struct type
*) NULL
)
1678 complaint (&symfile_complaints
,
1679 "unable to cross ref btTypedef for %s", sym_name
);
1680 tp
= mdebug_type_int
;
1684 /* Deal with range types */
1685 if (t
->bt
== btRange
)
1687 TYPE_NFIELDS (tp
) = 2;
1688 TYPE_FIELDS (tp
) = ((struct field
*)
1689 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1690 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1691 ¤t_objfile
->objfile_obstack
);
1692 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1694 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1695 ¤t_objfile
->objfile_obstack
);
1696 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1700 /* Parse all the type qualifiers now. If there are more
1701 than 6 the game will continue in the next aux */
1705 #define PARSE_TQ(tq) \
1706 if (t->tq != tqNil) \
1707 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1719 /* mips cc 2.x and gcc never put out continued aux entries. */
1723 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1727 /* Complain for illegal continuations due to corrupt aux entries. */
1729 complaint (&symfile_complaints
, "illegal TIR continued for %s", sym_name
);
1734 /* Make up a complex type from a basic one. Type is passed by
1735 reference in TPP and side-effected as necessary. The type
1736 qualifier TQ says how to handle the aux symbols at AX for
1737 the symbol SX we are currently analyzing. BIGEND says whether
1738 aux symbols are big-endian or little-endian.
1739 Returns the number of aux symbols we parsed. */
1742 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1748 /* Used in array processing */
1759 t
= lookup_pointer_type (*tpp
);
1764 t
= lookup_function_type (*tpp
);
1771 /* Determine and record the domain type (type of index) */
1772 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1778 rf
= AUX_GET_ISYM (bigend
, ax
);
1781 fh
= get_rfd (fd
, rf
);
1783 indx
= parse_type (fh
- debug_info
->fdr
,
1784 debug_info
->external_aux
+ fh
->iauxBase
,
1785 id
, (int *) NULL
, bigend
, sym_name
);
1787 /* The bounds type should be an integer type, but might be anything
1788 else due to corrupt aux entries. */
1789 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1791 complaint (&symfile_complaints
,
1792 "illegal array index type for %s, assuming int", sym_name
);
1793 indx
= mdebug_type_int
;
1796 /* Get the bounds, and create the array type. */
1798 lower
= AUX_GET_DNLOW (bigend
, ax
);
1800 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1802 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1804 range
= create_range_type ((struct type
*) NULL
, indx
,
1807 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1809 /* We used to fill in the supplied array element bitsize
1810 here if the TYPE_LENGTH of the target type was zero.
1811 This happens for a `pointer to an array of anonymous structs',
1812 but in this case the array element bitsize is also zero,
1813 so nothing is gained.
1814 And we used to check the TYPE_LENGTH of the target type against
1815 the supplied array element bitsize.
1816 gcc causes a mismatch for `pointer to array of object',
1817 since the sdb directives it uses do not have a way of
1818 specifying the bitsize, but it does no harm (the
1819 TYPE_LENGTH should be correct) and we should be able to
1820 ignore the erroneous bitsize from the auxiliary entry safely.
1821 dbx seems to ignore it too. */
1823 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1825 if (TYPE_LENGTH (*tpp
) == 0)
1827 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1834 /* Volatile -- currently ignored */
1838 /* Const -- currently ignored */
1842 complaint (&symfile_complaints
, "unknown type qualifier 0x%x", tq
);
1848 /* Parse a procedure descriptor record PR. Note that the procedure is
1849 parsed _after_ the local symbols, now we just insert the extra
1850 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1851 already been placed in the procedure's main block. Note also that
1852 images that have been partially stripped (ld -x) have been deprived
1853 of local symbols, and we have to cope with them here. FIRST_OFF is
1854 the offset of the first procedure for this FDR; we adjust the
1855 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1856 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1857 in question, or NULL to use top_stack->cur_block. */
1859 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1862 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1863 struct partial_symtab
*pst
)
1865 struct symbol
*s
, *i
;
1867 struct mips_extra_func_info
*e
;
1870 /* Simple rule to find files linked "-x" */
1871 if (cur_fdr
->rss
== -1)
1875 /* Static procedure at address pr->adr. Sigh. */
1876 /* FIXME-32x64. assuming pr->adr fits in long. */
1877 complaint (&symfile_complaints
,
1878 "can't handle PDR for static proc at 0x%lx",
1879 (unsigned long) pr
->adr
);
1887 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1888 ((char *) debug_info
->external_ext
1890 * debug_swap
->external_ext_size
)),
1892 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1900 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1901 ((char *) debug_info
->external_sym
1902 + ((cur_fdr
->isymBase
+ pr
->isym
)
1903 * debug_swap
->external_sym_size
)),
1905 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1908 if (search_symtab
!= NULL
)
1911 /* This loses both in the case mentioned (want a static, find a global),
1912 but also if we are looking up a non-mangled name which happens to
1913 match the name of a mangled function. */
1914 /* We have to save the cur_fdr across the call to lookup_symbol.
1915 If the pdr is for a static function and if a global function with
1916 the same name exists, lookup_symbol will eventually read in the symtab
1917 for the global function and clobber cur_fdr. */
1918 FDR
*save_cur_fdr
= cur_fdr
;
1919 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0, NULL
);
1920 cur_fdr
= save_cur_fdr
;
1924 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1930 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1931 VAR_DOMAIN
, LOC_BLOCK
);
1935 b
= SYMBOL_BLOCK_VALUE (s
);
1939 complaint (&symfile_complaints
, "PDR for %s, but no symbol", sh_name
);
1943 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1944 s
= new_symbol (sh_name
);
1945 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1946 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1947 /* Donno its type, hope int is ok */
1948 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1949 add_symbol (s
, top_stack
->cur_block
);
1950 /* Wont have symbols for this one */
1952 SYMBOL_BLOCK_VALUE (s
) = b
;
1953 BLOCK_FUNCTION (b
) = s
;
1954 BLOCK_START (b
) = pr
->adr
;
1955 /* BOUND used to be the end of procedure's text, but the
1956 argument is no longer passed in. */
1957 BLOCK_END (b
) = bound
;
1958 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1959 add_block (b
, top_stack
->cur_st
);
1963 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
1967 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1969 e
->pdr
.isym
= (long) s
;
1971 /* GDB expects the absolute function start address for the
1972 procedure descriptor in e->pdr.adr.
1973 As the address in the procedure descriptor is usually relative,
1974 we would have to relocate e->pdr.adr with cur_fdr->adr and
1975 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1976 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1977 in shared libraries on some systems, and on other systems
1978 e->pdr.adr is sometimes offset by a bogus value.
1979 To work around these problems, we replace e->pdr.adr with
1980 the start address of the function. */
1981 e
->pdr
.adr
= BLOCK_START (b
);
1983 /* Correct incorrect setjmp procedure descriptor from the library
1984 to make backtrace through setjmp work. */
1985 if (e
->pdr
.pcreg
== 0
1986 && strcmp (sh_name
, "setjmp") == 0)
1988 complaint (&symfile_complaints
, "fixing bad setjmp PDR from libc");
1989 e
->pdr
.pcreg
= RA_REGNUM
;
1990 e
->pdr
.regmask
= 0x80000000;
1991 e
->pdr
.regoffset
= -4;
1995 /* It would be reasonable that functions that have been compiled
1996 without debugging info have a btNil type for their return value,
1997 and functions that are void and are compiled with debugging info
1999 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2000 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2002 The glevel field in cur_fdr could be used to determine the presence
2003 of debugging info, but GCC doesn't always pass the -g switch settings
2004 to the assembler and GAS doesn't set the glevel field from the -g switch
2006 To work around these problems, the return value type of a TYPE_CODE_VOID
2007 function is adjusted accordingly if no debugging info was found in the
2008 compilation unit. */
2010 if (processing_gcc_compilation
== 0
2011 && found_ecoff_debugging_info
== 0
2012 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2013 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2016 /* Relocate the extra function info pointed to by the symbol table. */
2019 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2021 struct mips_extra_func_info
*e
;
2023 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2025 e
->pdr
.adr
+= delta
;
2028 /* Parse the external symbol ES. Just call parse_symbol() after
2029 making sure we know where the aux are for it.
2030 BIGEND says whether aux entries are big-endian or little-endian.
2032 This routine clobbers top_stack->cur_block and ->cur_st. */
2034 static void parse_external (EXTR
*, int, struct section_offsets
*,
2038 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2039 struct objfile
*objfile
)
2043 if (es
->ifd
!= ifdNil
)
2046 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2047 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2051 cur_fdr
= debug_info
->fdr
;
2055 /* Reading .o files */
2056 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2059 switch (es
->asym
.st
)
2062 /* These are generated for static symbols in .o files,
2083 /* FIXME: Turn this into a complaint? */
2085 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2086 what
, debug_info
->ssext
+ es
->asym
.iss
,
2087 fdr_name (cur_fdr
));
2091 switch (es
->asym
.st
)
2095 /* There is no need to parse the external procedure symbols.
2096 If they are from objects compiled without -g, their index will
2097 be indexNil, and the symbol definition from the minimal symbol
2098 is preferrable (yielding a function returning int instead of int).
2099 If the index points to a local procedure symbol, the local
2100 symbol already provides the correct type.
2101 Note that the index of the external procedure symbol points
2102 to the local procedure symbol in the local symbol table, and
2103 _not_ to the auxiliary symbol info. */
2107 /* Global common symbols are resolved by the runtime loader,
2109 if (SC_IS_COMMON (es
->asym
.sc
))
2112 /* Note that the case of a symbol with indexNil must be handled
2113 anyways by parse_symbol(). */
2114 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2121 /* Parse the line number info for file descriptor FH into
2122 GDB's linetable LT. MIPS' encoding requires a little bit
2123 of magic to get things out. Note also that MIPS' line
2124 numbers can go back and forth, apparently we can live
2125 with that and do not need to reorder our linetables */
2127 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2128 struct partial_symtab
*, CORE_ADDR
);
2131 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2132 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2134 unsigned char *base
;
2136 int delta
, count
, lineno
= 0;
2138 if (fh
->cbLine
== 0)
2141 /* Scan by procedure descriptors */
2143 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2147 unsigned char *halt
;
2149 /* No code for this one */
2150 if (pr
->iline
== ilineNil
||
2151 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2154 /* Determine start and end address of compressed line bytes for
2156 base
= debug_info
->line
+ fh
->cbLineOffset
;
2157 if (j
!= (fh
->cpd
- 1))
2158 halt
= base
+ pr
[1].cbLineOffset
;
2160 halt
= base
+ fh
->cbLine
;
2161 base
+= pr
->cbLineOffset
;
2163 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2165 l
= adr
>> 2; /* in words */
2166 for (lineno
= pr
->lnLow
; base
< halt
;)
2168 count
= *base
& 0x0f;
2169 delta
= *base
++ >> 4;
2174 delta
= (base
[0] << 8) | base
[1];
2175 if (delta
>= 0x8000)
2179 lineno
+= delta
; /* first delta is 0 */
2181 /* Complain if the line table overflows. Could happen
2182 with corrupt binaries. */
2183 if (lt
->nitems
>= maxlines
)
2185 complaint (&symfile_complaints
,
2186 "guessed size of linetable for %s incorrectly",
2190 k
= add_line (lt
, lineno
, l
, k
);
2197 function_outside_compilation_unit_complaint (const char *arg1
)
2199 complaint (&symfile_complaints
,
2200 "function `%s' appears to be defined outside of all compilation units",
2204 /* Master parsing procedure for first-pass reading of file symbols
2205 into a partial_symtab. */
2208 parse_partial_symbols (struct objfile
*objfile
)
2210 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2211 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2212 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2213 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2214 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2215 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2217 HDRR
*hdr
= &debug_info
->symbolic_header
;
2218 /* Running pointers */
2226 struct partial_symtab
*pst
;
2227 int textlow_not_set
= 1;
2228 int past_first_source_file
= 0;
2230 /* List of current psymtab's include files */
2231 char **psymtab_include_list
;
2232 int includes_allocated
;
2235 struct pst_map
*fdr_to_pst
;
2236 /* Index within current psymtab dependency list */
2237 struct partial_symtab
**dependency_list
;
2238 int dependencies_used
, dependencies_allocated
;
2239 struct cleanup
*old_chain
;
2241 enum language prev_language
;
2242 asection
*text_sect
;
2243 int relocatable
= 0;
2245 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2246 the shared libraries are prelinked at a high memory address.
2247 We have to adjust the start address of the object file for this case,
2248 by setting it to the start address of the first procedure in the file.
2249 But we should do no adjustments if we are debugging a .o file, where
2250 the text section (and fh->adr) really starts at zero. */
2251 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2252 if (text_sect
!= NULL
2253 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2256 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2257 sizeof (EXTR
) * hdr
->iextMax
);
2259 includes_allocated
= 30;
2261 psymtab_include_list
= (char **) alloca (includes_allocated
*
2263 next_symbol_text_func
= mdebug_next_symbol_text
;
2265 dependencies_allocated
= 30;
2266 dependencies_used
= 0;
2268 (struct partial_symtab
**) alloca (dependencies_allocated
*
2269 sizeof (struct partial_symtab
*));
2271 last_source_file
= NULL
;
2276 * Only parse the Local and External symbols, and the Relative FDR.
2277 * Fixup enough of the loader symtab to be able to use it.
2278 * Allocate space only for the file's portions we need to
2283 max_glevel
= MIN_GLEVEL
;
2285 /* Allocate the map FDR -> PST.
2286 Minor hack: -O3 images might claim some global data belongs
2287 to FDR -1. We`ll go along with that */
2288 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2289 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2292 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2293 fdr_to_pst
[-1].pst
= pst
;
2297 /* Allocate the global pending list. */
2299 ((struct mdebug_pending
**)
2300 obstack_alloc (&objfile
->objfile_obstack
,
2301 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2302 memset (pending_list
, 0,
2303 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2305 /* Pass 0 over external syms: swap them in. */
2306 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2307 make_cleanup (xfree
, ext_block
);
2309 ext_out
= (char *) debug_info
->external_ext
;
2310 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2312 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2313 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2315 /* Pass 1 over external syms: Presize and partition the list */
2317 ext_in_end
= ext_in
+ hdr
->iextMax
;
2318 for (; ext_in
< ext_in_end
; ext_in
++)
2320 /* See calls to complain below. */
2321 if (ext_in
->ifd
>= -1
2322 && ext_in
->ifd
< hdr
->ifdMax
2323 && ext_in
->asym
.iss
>= 0
2324 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2325 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2328 /* Pass 1.5 over files: partition out global symbol space */
2330 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2332 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2333 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2334 fdr_to_pst
[f_idx
].n_globals
= 0;
2339 For ECOFF in ELF, we skip the creation of the minimal symbols.
2340 The ECOFF symbols should be a subset of the Elf symbols, and the
2341 section information of the elf symbols will be more accurate.
2342 FIXME! What about Irix 5's native linker?
2344 By default, Elf sections which don't exist in ECOFF
2345 get put in ECOFF's absolute section by the gnu linker.
2346 Since absolute sections don't get relocated, we
2347 end up calculating an address different from that of
2348 the symbol's minimal symbol (created earlier from the
2351 To fix this, either :
2352 1) don't create the duplicate symbol
2353 (assumes ECOFF symtab is a subset of the ELF symtab;
2354 assumes no side-effects result from ignoring ECOFF symbol)
2355 2) create it, only if lookup for existing symbol in ELF's minimal
2358 assumes no side-effects result from ignoring ECOFF symbol)
2359 3) create it, but lookup ELF's minimal symbol and use it's section
2360 during relocation, then modify "uniqify" phase to merge and
2361 eliminate the duplicate symbol
2362 (highly inefficient)
2364 I've implemented #1 here...
2365 Skip the creation of the minimal symbols based on the ECOFF
2368 /* Pass 2 over external syms: fill in external symbols */
2370 ext_in_end
= ext_in
+ hdr
->iextMax
;
2371 for (; ext_in
< ext_in_end
; ext_in
++)
2373 enum minimal_symbol_type ms_type
= mst_text
;
2374 CORE_ADDR svalue
= ext_in
->asym
.value
;
2376 /* The Irix 5 native tools seem to sometimes generate bogus
2377 external symbols. */
2378 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2380 complaint (&symfile_complaints
,
2381 "bad ifd for external symbol: %d (max %ld)", ext_in
->ifd
,
2385 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2387 complaint (&symfile_complaints
,
2388 "bad iss for external symbol: %ld (max %ld)",
2389 ext_in
->asym
.iss
, hdr
->issExtMax
);
2393 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2394 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2397 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2401 /* Pass 3 over files, over local syms: fill in static symbols */
2402 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2404 /* Process ECOFF Symbol Types and Storage Classes */
2405 switch (ext_in
->asym
.st
)
2408 /* Beginnning of Procedure */
2409 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2412 /* Load time only static procs */
2413 ms_type
= mst_file_text
;
2414 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2417 /* External symbol */
2418 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2420 /* The value of a common symbol is its size, not its address.
2424 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2427 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2429 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2432 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2434 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2437 svalue
+= ANOFFSET (objfile
->section_offsets
,
2438 get_section_index (objfile
, ".sbss"));
2446 /* On certain platforms, some extra label symbols can be
2447 generated by the linker. One possible usage for this kind
2448 of symbols is to represent the address of the begining of a
2449 given section. For instance, on Tru64 5.1, the address of
2450 the _ftext label is the start address of the .text section.
2452 The storage class of these symbols is usually directly
2453 related to the section to which the symbol refers. For
2454 instance, on Tru64 5.1, the storage class for the _fdata
2455 label is scData, refering to the .data section.
2457 It is actually possible that the section associated to the
2458 storage class of the label does not exist. On True64 5.1
2459 for instance, the libm.so shared library does not contain
2460 any .data section, although it contains a _fpdata label
2461 which storage class is scData... Since these symbols are
2462 usually useless for the debugger user anyway, we just
2463 discard these symbols.
2466 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2468 if (objfile
->sect_index_text
== -1)
2471 ms_type
= mst_file_text
;
2472 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2474 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2476 if (objfile
->sect_index_data
== -1)
2479 ms_type
= mst_file_data
;
2480 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2482 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2484 if (objfile
->sect_index_bss
== -1)
2487 ms_type
= mst_file_bss
;
2488 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2490 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2492 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2494 if (sbss_sect_index
== -1)
2497 ms_type
= mst_file_bss
;
2498 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2505 /* The alpha has the section start addresses in stLocal symbols
2506 whose name starts with a `.'. Skip those but complain for all
2507 other stLocal symbols.
2508 Irix6 puts the section start addresses in stNil symbols, skip
2514 ms_type
= mst_unknown
;
2515 unknown_ext_complaint (name
);
2517 if (!ECOFF_IN_ELF (cur_bfd
))
2518 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2521 /* Pass 3 over files, over local syms: fill in static symbols */
2522 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2524 struct partial_symtab
*save_pst
;
2528 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2532 fdr_to_pst
[f_idx
].pst
= NULL
;
2536 /* Determine the start address for this object file from the
2537 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2541 if (relocatable
|| textlow
!= 0)
2542 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2546 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2549 objfile
->global_psymbols
.next
,
2550 objfile
->static_psymbols
.next
);
2551 pst
->read_symtab_private
= ((char *)
2552 obstack_alloc (&objfile
->objfile_obstack
,
2553 sizeof (struct symloc
)));
2554 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2557 FDR_IDX (pst
) = f_idx
;
2558 CUR_BFD (pst
) = cur_bfd
;
2559 DEBUG_SWAP (pst
) = debug_swap
;
2560 DEBUG_INFO (pst
) = debug_info
;
2561 PENDING_LIST (pst
) = pending_list
;
2563 /* The way to turn this into a symtab is to call... */
2564 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2566 /* Set up language for the pst.
2567 The language from the FDR is used if it is unambigious (e.g. cfront
2568 with native cc and g++ will set the language to C).
2569 Otherwise we have to deduce the language from the filename.
2570 Native ecoff has every header file in a separate FDR, so
2571 deduce_language_from_filename will return language_unknown for
2572 a header file, which is not what we want.
2573 But the FDRs for the header files are after the FDR for the source
2574 file, so we can assign the language of the source file to the
2575 following header files. Then we save the language in the private
2576 pst data so that we can reuse it when building symtabs. */
2577 prev_language
= psymtab_language
;
2581 case langCplusplusV2
:
2582 psymtab_language
= language_cplus
;
2585 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2588 if (psymtab_language
== language_unknown
)
2589 psymtab_language
= prev_language
;
2590 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2592 pst
->texthigh
= pst
->textlow
;
2594 /* For stabs-in-ecoff files, the second symbol must be @stab.
2595 This symbol is emitted by mips-tfile to signal that the
2596 current object file uses encapsulated stabs instead of mips
2597 ecoff for local symbols. (It is the second symbol because
2598 the first symbol is the stFile used to signal the start of a
2600 processing_gcc_compilation
= 0;
2603 (*swap_sym_in
) (cur_bfd
,
2604 ((char *) debug_info
->external_sym
2605 + (fh
->isymBase
+ 1) * external_sym_size
),
2607 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2609 processing_gcc_compilation
= 2;
2612 if (processing_gcc_compilation
!= 0)
2614 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2619 (*swap_sym_in
) (cur_bfd
,
2620 (((char *) debug_info
->external_sym
)
2621 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2623 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2624 if (!ECOFF_IS_STAB (&sh
))
2626 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2631 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2632 if (sh
.st
== stStaticProc
)
2634 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2635 prim_record_minimal_symbol_and_info (namestring
,
2639 SECT_OFF_TEXT (objfile
),
2643 procaddr
= sh
.value
;
2645 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2646 (debug_info
->external_aux
2649 (*swap_sym_in
) (cur_bfd
,
2650 ((char *) debug_info
->external_sym
2651 + ((fh
->isymBase
+ isym
- 1)
2652 * external_sym_size
)),
2656 CORE_ADDR high
= procaddr
+ sh
.value
;
2658 /* Kludge for Irix 5.2 zero fh->adr. */
2660 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2661 pst
->textlow
= procaddr
;
2662 if (high
> pst
->texthigh
)
2663 pst
->texthigh
= high
;
2666 else if (sh
.st
== stStatic
)
2681 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2682 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2683 prim_record_minimal_symbol_and_info (namestring
,
2687 SECT_OFF_DATA (objfile
),
2693 /* FIXME! Shouldn't this use cases for bss,
2694 then have the default be abs? */
2695 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2696 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2697 prim_record_minimal_symbol_and_info (namestring
,
2701 SECT_OFF_BSS (objfile
),
2709 /* Handle stabs continuation */
2711 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2712 int len
= strlen (stabstring
);
2713 while (stabstring
[len
- 1] == '\\')
2716 char *stabstring1
= stabstring
;
2720 /* Ignore continuation char from 1st string */
2723 /* Read next stabstring */
2725 (*swap_sym_in
) (cur_bfd
,
2726 (((char *) debug_info
->external_sym
)
2727 + (fh
->isymBase
+ cur_sdx
)
2728 * external_sym_size
),
2730 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2731 len2
= strlen (stabstring2
);
2733 /* Concatinate stabstring2 with stabstring1 */
2735 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2736 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2739 stabstring
= xmalloc (len
+ len2
+ 1);
2740 strcpy (stabstring
, stabstring1
);
2742 strcpy (stabstring
+ len
, stabstring2
);
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
&& strcmp (namestring
, pst
->filename
) == 0)
2933 for (i
= 0; i
< includes_used
; i
++)
2934 if (strcmp (namestring
,
2935 psymtab_include_list
[i
]) == 0)
2944 psymtab_include_list
[includes_used
++] = namestring
;
2945 if (includes_used
>= includes_allocated
)
2947 char **orig
= psymtab_include_list
;
2949 psymtab_include_list
= (char **)
2950 alloca ((includes_allocated
*= 2) *
2952 memcpy (psymtab_include_list
, orig
,
2953 includes_used
* sizeof (char *));
2957 case N_LSYM
: /* Typedef or automatic variable. */
2958 case N_STSYM
: /* Data seg var -- static */
2959 case N_LCSYM
: /* BSS " */
2960 case N_ROSYM
: /* Read-only data seg var -- static. */
2961 case N_NBSTS
: /* Gould nobase. */
2962 case N_NBLCS
: /* symbols. */
2964 case N_GSYM
: /* Global (extern) variable; can be
2965 data or bss (sigh FIXME). */
2967 /* Following may probably be ignored; I'll leave them here
2968 for now (until I do Pascal and Modula 2 extensions). */
2970 case N_PC
: /* I may or may not need this; I
2972 case N_M2C
: /* I suspect that I can ignore this here. */
2973 case N_SCOPE
: /* Same. */
2975 /* SET_NAMESTRING ();*/
2976 namestring
= stabstring
;
2977 p
= (char *) strchr (namestring
, ':');
2979 continue; /* Not a debugging symbol. */
2983 /* Main processing section for debugging symbols which
2984 the initial read through the symbol tables needs to worry
2985 about. If we reach this point, the symbol which we are
2986 considering is definitely one we are interested in.
2987 p must also contain the (valid) index into the namestring
2988 which indicates the debugging type symbol. */
2993 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2994 #ifdef STATIC_TRANSFORM_NAME
2995 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2997 add_psymbol_to_list (namestring
, p
- namestring
,
2998 VAR_DOMAIN
, LOC_STATIC
,
2999 &objfile
->static_psymbols
,
3001 psymtab_language
, objfile
);
3004 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3005 /* The addresses in these entries are reported to be
3006 wrong. See the code that reads 'G's for symtabs. */
3007 add_psymbol_to_list (namestring
, p
- namestring
,
3008 VAR_DOMAIN
, LOC_STATIC
,
3009 &objfile
->global_psymbols
,
3011 psymtab_language
, objfile
);
3015 /* When a 'T' entry is defining an anonymous enum, it
3016 may have a name which is the empty string, or a
3017 single space. Since they're not really defining a
3018 symbol, those shouldn't go in the partial symbol
3019 table. We do pick up the elements of such enums at
3020 'check_enum:', below. */
3021 if (p
>= namestring
+ 2
3022 || (p
== namestring
+ 1
3023 && namestring
[0] != ' '))
3025 add_psymbol_to_list (namestring
, p
- namestring
,
3026 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3027 &objfile
->static_psymbols
,
3029 psymtab_language
, objfile
);
3032 /* Also a typedef with the same name. */
3033 add_psymbol_to_list (namestring
, p
- namestring
,
3034 VAR_DOMAIN
, LOC_TYPEDEF
,
3035 &objfile
->static_psymbols
,
3037 psymtab_language
, objfile
);
3043 if (p
!= namestring
) /* a name is there, not just :T... */
3045 add_psymbol_to_list (namestring
, p
- namestring
,
3046 VAR_DOMAIN
, LOC_TYPEDEF
,
3047 &objfile
->static_psymbols
,
3049 psymtab_language
, objfile
);
3052 /* If this is an enumerated type, we need to
3053 add all the enum constants to the partial symbol
3054 table. This does not cover enums without names, e.g.
3055 "enum {a, b} c;" in C, but fortunately those are
3056 rare. There is no way for GDB to find those from the
3057 enum type without spending too much time on it. Thus
3058 to solve this problem, the compiler needs to put out the
3059 enum in a nameless type. GCC2 does this. */
3061 /* We are looking for something of the form
3062 <name> ":" ("t" | "T") [<number> "="] "e"
3063 {<constant> ":" <value> ","} ";". */
3065 /* Skip over the colon and the 't' or 'T'. */
3067 /* This type may be given a number. Also, numbers can come
3068 in pairs like (0,26). Skip over it. */
3069 while ((*p
>= '0' && *p
<= '9')
3070 || *p
== '(' || *p
== ',' || *p
== ')'
3076 /* The aix4 compiler emits extra crud before the members. */
3079 /* Skip over the type (?). */
3083 /* Skip over the colon. */
3087 /* We have found an enumerated type. */
3088 /* According to comments in read_enum_type
3089 a comma could end it instead of a semicolon.
3090 I don't know where that happens.
3092 while (*p
&& *p
!= ';' && *p
!= ',')
3096 /* Check for and handle cretinous dbx symbol name
3098 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3099 p
= next_symbol_text (objfile
);
3101 /* Point to the character after the name
3102 of the enum constant. */
3103 for (q
= p
; *q
&& *q
!= ':'; q
++)
3105 /* Note that the value doesn't matter for
3106 enum constants in psymtabs, just in symtabs. */
3107 add_psymbol_to_list (p
, q
- p
,
3108 VAR_DOMAIN
, LOC_CONST
,
3109 &objfile
->static_psymbols
, 0,
3110 0, psymtab_language
, objfile
);
3111 /* Point past the name. */
3113 /* Skip over the value. */
3114 while (*p
&& *p
!= ',')
3116 /* Advance past the comma. */
3123 /* Constant, e.g. from "const" in Pascal. */
3124 add_psymbol_to_list (namestring
, p
- namestring
,
3125 VAR_DOMAIN
, LOC_CONST
,
3126 &objfile
->static_psymbols
, sh
.value
,
3127 0, psymtab_language
, objfile
);
3133 int name_len
= p
- namestring
;
3134 char *name
= xmalloc (name_len
+ 1);
3135 memcpy (name
, namestring
, name_len
);
3136 name
[name_len
] = '\0';
3137 function_outside_compilation_unit_complaint (name
);
3140 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3141 add_psymbol_to_list (namestring
, p
- namestring
,
3142 VAR_DOMAIN
, LOC_BLOCK
,
3143 &objfile
->static_psymbols
,
3145 psymtab_language
, objfile
);
3148 /* Global functions were ignored here, but now they
3149 are put into the global psymtab like one would expect.
3150 They're also in the minimal symbol table. */
3154 int name_len
= p
- namestring
;
3155 char *name
= xmalloc (name_len
+ 1);
3156 memcpy (name
, namestring
, name_len
);
3157 name
[name_len
] = '\0';
3158 function_outside_compilation_unit_complaint (name
);
3161 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3162 add_psymbol_to_list (namestring
, p
- namestring
,
3163 VAR_DOMAIN
, LOC_BLOCK
,
3164 &objfile
->global_psymbols
,
3166 psymtab_language
, objfile
);
3169 /* Two things show up here (hopefully); static symbols of
3170 local scope (static used inside braces) or extensions
3171 of structure symbols. We can ignore both. */
3185 case '#': /* for symbol identification (used in live ranges) */
3189 /* It is a C++ nested symbol. We don't need to record it
3190 (I don't think); if we try to look up foo::bar::baz,
3191 then symbols for the symtab containing foo should get
3192 read in, I think. */
3193 /* Someone says sun cc puts out symbols like
3194 /foo/baz/maclib::/usr/local/bin/maclib,
3195 which would get here with a symbol type of ':'. */
3199 /* Unexpected symbol descriptor. The second and subsequent stabs
3200 of a continued stab can show up here. The question is
3201 whether they ever can mimic a normal stab--it would be
3202 nice if not, since we certainly don't want to spend the
3203 time searching to the end of every string looking for
3206 complaint (&symfile_complaints
,
3207 "unknown symbol descriptor `%c'", p
[1]);
3209 /* Ignore it; perhaps it is an extension that we don't
3218 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3219 /* Solaris 2 end of module, finish current partial
3220 symbol table. END_PSYMTAB will set
3221 pst->texthigh to the proper value, which is
3222 necessary if a module compiled without
3223 debugging info follows this module. */
3226 pst
= (struct partial_symtab
*) 0;
3228 dependencies_used
= 0;
3234 if (sh
.value
> save_pst
->texthigh
)
3235 save_pst
->texthigh
= sh
.value
;
3240 case N_SSYM
: /* Claim: Structure or union element.
3241 Hopefully, I can ignore this. */
3242 case N_ENTRY
: /* Alternate entry point; can ignore. */
3243 case N_MAIN
: /* Can definitely ignore this. */
3244 case N_CATCH
: /* These are GNU C++ extensions */
3245 case N_EHDECL
: /* that can safely be ignored here. */
3255 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3256 case N_DEFD
: /* GNU Modula-2 */
3257 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3259 case N_OBJ
: /* useless types from Solaris */
3261 /* These symbols aren't interesting; don't worry about them */
3266 /* If we haven't found it yet, ignore it. It's probably some
3267 new type we don't know about yet. */
3268 complaint (&symfile_complaints
, "unknown symbol type %s",
3269 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3273 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3276 /* end - Handle continuation */
3281 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3284 enum address_class
class;
3286 (*swap_sym_in
) (cur_bfd
,
3287 ((char *) debug_info
->external_sym
3288 + ((fh
->isymBase
+ cur_sdx
)
3289 * external_sym_size
)),
3292 if (ECOFF_IS_STAB (&sh
))
3298 /* Non absolute static symbols go into the minimal table. */
3299 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3300 || (sh
.index
== indexNil
3301 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3303 /* FIXME, premature? */
3308 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3314 /* The value of a stEnd symbol is the displacement from the
3315 corresponding start symbol value, do not relocate it. */
3317 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3324 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3328 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3339 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3340 mst_file_text
, NULL
,
3341 SECT_OFF_TEXT (objfile
), NULL
,
3347 /* Ignore all parameter symbol records. */
3348 if (sh
.index
>= hdr
->iauxMax
)
3350 /* Should not happen, but does when cross-compiling
3351 with the MIPS compiler. FIXME -- pull later. */
3352 index_complaint (name
);
3353 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3356 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3357 (debug_info
->external_aux
3361 if (new_sdx
<= cur_sdx
)
3363 /* This should not happen either... FIXME. */
3364 complaint (&symfile_complaints
,
3365 "bad proc end in aux found from symbol %s",
3367 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3370 /* For stProc symbol records, we need to check the
3371 storage class as well, as only (stProc, scText)
3372 entries represent "real" procedures - See the
3373 Compaq document titled "Object File / Symbol Table
3374 Format Specification" for more information. If the
3375 storage class is not scText, we discard the whole
3376 block of symbol records for this stProc. */
3377 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3380 /* Usually there is a local and a global stProc symbol
3381 for a function. This means that the function name
3382 has already been entered into the mimimal symbol table
3383 while processing the global symbols in pass 2 above.
3384 One notable exception is the PROGRAM name from
3385 f77 compiled executables, it is only put out as
3386 local stProc symbol, and a global MAIN__ stProc symbol
3387 points to it. It doesn't matter though, as gdb is
3388 still able to find the PROGRAM name via the partial
3389 symbol table, and the MAIN__ symbol via the minimal
3391 if (sh
.st
== stProc
)
3392 add_psymbol_to_list (name
, strlen (name
),
3393 VAR_DOMAIN
, LOC_BLOCK
,
3394 &objfile
->global_psymbols
,
3395 0, sh
.value
, psymtab_language
, objfile
);
3397 add_psymbol_to_list (name
, strlen (name
),
3398 VAR_DOMAIN
, LOC_BLOCK
,
3399 &objfile
->static_psymbols
,
3400 0, sh
.value
, psymtab_language
, objfile
);
3402 procaddr
= sh
.value
;
3405 (*swap_sym_in
) (cur_bfd
,
3406 ((char *) debug_info
->external_sym
3407 + ((fh
->isymBase
+ cur_sdx
- 1)
3408 * external_sym_size
)),
3413 /* Kludge for Irix 5.2 zero fh->adr. */
3415 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3416 pst
->textlow
= procaddr
;
3418 high
= procaddr
+ sh
.value
;
3419 if (high
> pst
->texthigh
)
3420 pst
->texthigh
= high
;
3423 case stStatic
: /* Variable */
3424 if (SC_IS_DATA (sh
.sc
))
3425 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3426 mst_file_data
, NULL
,
3427 SECT_OFF_DATA (objfile
),
3431 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3433 SECT_OFF_BSS (objfile
),
3439 case stIndirect
: /* Irix5 forward declaration */
3440 /* Skip forward declarations from Irix5 cc */
3443 case stTypedef
: /* Typedef */
3444 /* Skip typedefs for forward declarations and opaque
3445 structs from alpha and mips cc. */
3446 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3448 class = LOC_TYPEDEF
;
3451 case stConstant
: /* Constant decl */
3458 case stBlock
: /* { }, str, un, enum */
3459 /* Do not create a partial symbol for cc unnamed aggregates
3460 and gcc empty aggregates. */
3461 if ((sh
.sc
== scInfo
3462 || SC_IS_COMMON (sh
.sc
))
3464 && sh
.index
!= cur_sdx
+ 2)
3466 add_psymbol_to_list (name
, strlen (name
),
3467 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3468 &objfile
->static_psymbols
,
3470 psymtab_language
, objfile
);
3472 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3474 /* Skip over the block */
3476 if (new_sdx
<= cur_sdx
)
3478 /* This happens with the Ultrix kernel. */
3479 complaint (&symfile_complaints
,
3480 "bad aux index at block symbol %s", 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 complaint (&symfile_complaints
, "unknown local symbol %s",
3502 complaint (&symfile_complaints
, "with type %d", sh
.st
);
3506 /* Use this gdb symbol */
3507 add_psymbol_to_list (name
, strlen (name
),
3509 &objfile
->static_psymbols
,
3510 0, sh
.value
, psymtab_language
, objfile
);
3512 cur_sdx
++; /* Go to next file symbol */
3515 /* Now do enter the external symbols. */
3516 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3517 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3518 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3519 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3520 for (; --cur_sdx
>= 0; ext_ptr
++)
3522 enum address_class
class;
3527 if (ext_ptr
->ifd
!= f_idx
)
3528 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3529 psh
= &ext_ptr
->asym
;
3531 /* Do not add undefined symbols to the partial symbol table. */
3532 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3535 svalue
= psh
->value
;
3540 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3547 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3551 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3558 /* These are generated for static symbols in .o files,
3563 /* External procedure symbols have been entered
3564 into the minimal symbol table in pass 2 above.
3565 Ignore them, as parse_external will ignore them too. */
3571 unknown_ext_complaint (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
),
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, save_pst
->texthigh
,
3596 dependency_list
, dependencies_used
, textlow_not_set
);
3598 dependencies_used
= 0;
3600 /* The objfile has its functions reordered if this partial symbol
3601 table overlaps any other partial symbol table.
3602 We cannot assume a reordered objfile if a partial symbol table
3603 is contained within another partial symbol table, as partial symbol
3604 tables for include files with executable code are contained
3605 within the partial symbol table for the including source file,
3606 and we do not want to flag the objfile reordered for these cases.
3608 This strategy works well for Irix-5.2 shared libraries, but we
3609 might have to use a more elaborate (and slower) algorithm for
3611 save_pst
= fdr_to_pst
[f_idx
].pst
;
3612 if (save_pst
!= NULL
3613 && save_pst
->textlow
!= 0
3614 && !(objfile
->flags
& OBJF_REORDERED
))
3616 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3619 && save_pst
->textlow
>= pst
->textlow
3620 && save_pst
->textlow
< pst
->texthigh
3621 && save_pst
->texthigh
> pst
->texthigh
)
3623 objfile
->flags
|= OBJF_REORDERED
;
3630 /* Now scan the FDRs for dependencies */
3631 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3633 fh
= f_idx
+ debug_info
->fdr
;
3634 pst
= fdr_to_pst
[f_idx
].pst
;
3636 if (pst
== (struct partial_symtab
*) NULL
)
3639 /* This should catch stabs-in-ecoff. */
3643 /* Skip the first file indirect entry as it is a self dependency
3644 for source files or a reverse .h -> .c dependency for header files. */
3645 pst
->number_of_dependencies
= 0;
3647 ((struct partial_symtab
**)
3648 obstack_alloc (&objfile
->objfile_obstack
,
3650 * sizeof (struct partial_symtab
*))));
3651 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3655 (*swap_rfd_in
) (cur_bfd
,
3656 ((char *) debug_info
->external_rfd
3657 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3659 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3661 complaint (&symfile_complaints
, "bad file number %ld", rh
);
3665 /* Skip self dependencies of header files. */
3669 /* Do not add to dependeny list if psymtab was empty. */
3670 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3672 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3676 /* Remove the dummy psymtab created for -O3 images above, if it is
3677 still empty, to enable the detection of stripped executables. */
3678 if (objfile
->psymtabs
->next
== NULL
3679 && objfile
->psymtabs
->number_of_dependencies
== 0
3680 && objfile
->psymtabs
->n_global_syms
== 0
3681 && objfile
->psymtabs
->n_static_syms
== 0)
3682 objfile
->psymtabs
= NULL
;
3683 do_cleanups (old_chain
);
3686 /* If the current psymbol has an enumerated type, we need to add
3687 all the the enum constants to the partial symbol table. */
3690 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3693 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3694 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3695 char *ext_sym
= ((char *) debug_info
->external_sym
3696 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3706 /* It is an enumerated type if the next symbol entry is a stMember
3707 and its auxiliary index is indexNil or its auxiliary entry
3708 is a plain btNil or btVoid.
3709 Alpha cc -migrate enums are recognized by a zero index and
3710 a zero symbol value.
3711 DU 4.0 cc enums are recognized by a member type of btEnum without
3712 qualifiers and a zero symbol value. */
3713 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3714 if (sh
.st
!= stMember
)
3717 if (sh
.index
== indexNil
3718 || (sh
.index
== 0 && svalue
== 0))
3720 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3721 &(debug_info
->external_aux
3722 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3724 if ((tir
.bt
!= btNil
3726 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3727 || tir
.tq0
!= tqNil
)
3739 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3740 if (sh
.st
!= stMember
)
3742 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3744 /* Note that the value doesn't matter for enum constants
3745 in psymtabs, just in symtabs. */
3746 add_psymbol_to_list (name
, strlen (name
),
3747 VAR_DOMAIN
, LOC_CONST
,
3748 &objfile
->static_psymbols
, 0,
3749 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3750 ext_sym
+= external_sym_size
;
3754 /* Get the next symbol. OBJFILE is unused. */
3757 mdebug_next_symbol_text (struct objfile
*objfile
)
3762 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3763 ((char *) debug_info
->external_sym
3764 + ((cur_fdr
->isymBase
+ cur_sdx
)
3765 * debug_swap
->external_sym_size
)),
3767 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3770 /* Ancillary function to psymtab_to_symtab(). Does all the work
3771 for turning the partial symtab PST into a symtab, recurring
3772 first on all dependent psymtabs. The argument FILENAME is
3773 only passed so we can see in debug stack traces what file
3776 This function has a split personality, based on whether the
3777 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3778 The flow of control and even the memory allocation differs. FIXME. */
3781 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3783 bfd_size_type external_sym_size
;
3784 bfd_size_type external_pdr_size
;
3785 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3786 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3788 struct symtab
*st
= NULL
;
3790 struct linetable
*lines
;
3791 CORE_ADDR lowest_pdr_addr
= 0;
3792 int last_symtab_ended
= 0;
3798 /* Read in all partial symbtabs on which this one is dependent.
3799 NOTE that we do have circular dependencies, sigh. We solved
3800 that by setting pst->readin before this point. */
3802 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3803 if (!pst
->dependencies
[i
]->readin
)
3805 /* Inform about additional files to be read in. */
3808 fputs_filtered (" ", gdb_stdout
);
3810 fputs_filtered ("and ", gdb_stdout
);
3812 printf_filtered ("%s...",
3813 pst
->dependencies
[i
]->filename
);
3814 wrap_here (""); /* Flush output */
3815 gdb_flush (gdb_stdout
);
3817 /* We only pass the filename for debug purposes */
3818 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3819 pst
->dependencies
[i
]->filename
);
3822 /* Do nothing if this is a dummy psymtab. */
3824 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3825 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3828 /* Now read the symbols for this symtab */
3830 cur_bfd
= CUR_BFD (pst
);
3831 debug_swap
= DEBUG_SWAP (pst
);
3832 debug_info
= DEBUG_INFO (pst
);
3833 pending_list
= PENDING_LIST (pst
);
3834 external_sym_size
= debug_swap
->external_sym_size
;
3835 external_pdr_size
= debug_swap
->external_pdr_size
;
3836 swap_sym_in
= debug_swap
->swap_sym_in
;
3837 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3838 current_objfile
= pst
->objfile
;
3839 cur_fd
= FDR_IDX (pst
);
3840 fh
= ((cur_fd
== -1)
3842 : debug_info
->fdr
+ cur_fd
);
3845 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3846 processing_gcc_compilation
= 0;
3847 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3851 (*swap_sym_in
) (cur_bfd
,
3852 ((char *) debug_info
->external_sym
3853 + (fh
->isymBase
+ 1) * external_sym_size
),
3855 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3858 /* We indicate that this is a GCC compilation so that certain
3859 features will be enabled in stabsread/dbxread. */
3860 processing_gcc_compilation
= 2;
3864 if (processing_gcc_compilation
!= 0)
3867 /* This symbol table contains stabs-in-ecoff entries. */
3869 /* Parse local symbols first */
3871 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3873 current_objfile
= NULL
;
3876 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3882 (*swap_sym_in
) (cur_bfd
,
3883 (((char *) debug_info
->external_sym
)
3884 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3886 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3888 /* XXX This is a hack. It will go away! */
3889 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3891 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3893 /* We should never get non N_STAB symbols here, but they
3894 should be harmless, so keep process_one_symbol from
3895 complaining about them. */
3896 if (type_code
& N_STAB
)
3898 /* If we found a trailing N_SO with no name, process
3899 it here instead of in process_one_symbol, so we
3900 can keep a handle to its symtab. The symtab
3901 would otherwise be ended twice, once in
3902 process_one_symbol, and once after this loop. */
3903 if (type_code
== N_SO
3905 && previous_stab_code
!= (unsigned char) N_SO
3908 valu
+= ANOFFSET (pst
->section_offsets
,
3909 SECT_OFF_TEXT (pst
->objfile
));
3910 previous_stab_code
= N_SO
;
3911 st
= end_symtab (valu
, pst
->objfile
,
3912 SECT_OFF_TEXT (pst
->objfile
));
3914 last_symtab_ended
= 1;
3918 last_symtab_ended
= 0;
3919 process_one_symbol (type_code
, 0, valu
, name
,
3920 pst
->section_offsets
, pst
->objfile
);
3923 /* Similarly a hack. */
3924 else if (name
[0] == '#')
3926 process_one_symbol (N_SLINE
, 0, valu
, name
,
3927 pst
->section_offsets
, pst
->objfile
);
3929 if (type_code
== N_FUN
)
3931 /* Make up special symbol to contain
3932 procedure specific info */
3933 struct mips_extra_func_info
*e
=
3934 ((struct mips_extra_func_info
*)
3935 obstack_alloc (¤t_objfile
->objfile_obstack
,
3936 sizeof (struct mips_extra_func_info
)));
3937 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3939 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3940 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
3941 SYMBOL_CLASS (s
) = LOC_CONST
;
3942 SYMBOL_TYPE (s
) = mdebug_type_void
;
3943 SYMBOL_VALUE (s
) = (long) e
;
3944 e
->pdr
.framereg
= -1;
3945 add_symbol_to_list (s
, &local_symbols
);
3948 else if (sh
.st
== stLabel
)
3950 if (sh
.index
== indexNil
)
3952 /* This is what the gcc2_compiled and __gnu_compiled_*
3953 show up as. So don't complain. */
3958 /* Handle encoded stab line number. */
3959 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3960 record_line (current_subfile
, sh
.index
, valu
);
3963 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3964 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3965 /* These are generated by gcc-2.x, do not complain */
3968 complaint (&symfile_complaints
, "unknown stabs symbol %s", name
);
3971 if (! last_symtab_ended
)
3973 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3977 /* There used to be a call to sort_blocks here, but this should not
3978 be necessary for stabs symtabs. And as sort_blocks modifies the
3979 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3980 it did the wrong thing if the first procedure in a file was
3981 generated via asm statements. */
3983 /* Fill in procedure info next. */
3987 struct cleanup
*old_chain
;
3993 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3994 old_chain
= make_cleanup (xfree
, pr_block
);
3996 pdr_ptr
= ((char *) debug_info
->external_pdr
3997 + fh
->ipdFirst
* external_pdr_size
);
3998 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4002 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4004 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4006 /* Determine lowest PDR address, the PDRs are not always
4008 if (pdr_in
== pr_block
)
4009 lowest_pdr_addr
= pdr_in
->adr
;
4010 else if (pdr_in
->adr
< lowest_pdr_addr
)
4011 lowest_pdr_addr
= pdr_in
->adr
;
4015 pdr_in_end
= pdr_in
+ fh
->cpd
;
4016 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4017 parse_procedure (pdr_in
, st
, pst
);
4019 do_cleanups (old_chain
);
4024 /* This symbol table contains ordinary ecoff entries. */
4033 st
= new_symtab ("unknown", 0, pst
->objfile
);
4037 maxlines
= 2 * fh
->cline
;
4038 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4040 /* The proper language was already determined when building
4041 the psymtab, use it. */
4042 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4045 psymtab_language
= st
->language
;
4047 lines
= LINETABLE (st
);
4049 /* Get a new lexical context */
4051 push_parse_stack ();
4052 top_stack
->cur_st
= st
;
4053 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4055 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4056 BLOCK_END (top_stack
->cur_block
) = 0;
4057 top_stack
->blocktype
= stFile
;
4058 top_stack
->cur_type
= 0;
4059 top_stack
->procadr
= 0;
4060 top_stack
->numargs
= 0;
4061 found_ecoff_debugging_info
= 0;
4068 /* Parse local symbols first */
4069 sym_ptr
= ((char *) debug_info
->external_sym
4070 + fh
->isymBase
* external_sym_size
);
4071 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4072 while (sym_ptr
< sym_end
)
4077 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4078 c
= parse_symbol (&sh
,
4079 debug_info
->external_aux
+ fh
->iauxBase
,
4080 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4081 sym_ptr
+= c
* external_sym_size
;
4084 /* Linenumbers. At the end, check if we can save memory.
4085 parse_lines has to look ahead an arbitrary number of PDR
4086 structures, so we swap them all first. */
4090 struct cleanup
*old_chain
;
4096 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4098 old_chain
= make_cleanup (xfree
, pr_block
);
4100 pdr_ptr
= ((char *) debug_info
->external_pdr
4101 + fh
->ipdFirst
* external_pdr_size
);
4102 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4106 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4108 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4110 /* Determine lowest PDR address, the PDRs are not always
4112 if (pdr_in
== pr_block
)
4113 lowest_pdr_addr
= pdr_in
->adr
;
4114 else if (pdr_in
->adr
< lowest_pdr_addr
)
4115 lowest_pdr_addr
= pdr_in
->adr
;
4118 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4119 if (lines
->nitems
< fh
->cline
)
4120 lines
= shrink_linetable (lines
);
4122 /* Fill in procedure info next. */
4124 pdr_in_end
= pdr_in
+ fh
->cpd
;
4125 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4126 parse_procedure (pdr_in
, 0, pst
);
4128 do_cleanups (old_chain
);
4132 LINETABLE (st
) = lines
;
4134 /* .. and our share of externals.
4135 XXX use the global list to speed up things here. how?
4136 FIXME, Maybe quit once we have found the right number of ext's? */
4137 top_stack
->cur_st
= st
;
4138 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4140 top_stack
->blocktype
= stFile
;
4142 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4143 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4144 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4146 /* If there are undefined symbols, tell the user.
4147 The alpha has an undefined symbol for every symbol that is
4148 from a shared library, so tell the user only if verbose is on. */
4149 if (info_verbose
&& n_undef_symbols
)
4151 printf_filtered ("File %s contains %d unresolved references:",
4152 st
->filename
, n_undef_symbols
);
4153 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4154 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4155 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4165 /* Now link the psymtab and the symtab. */
4168 current_objfile
= NULL
;
4171 /* Ancillary parsing procedures. */
4173 /* Return 1 if the symbol pointed to by SH has a cross reference
4174 to an opaque aggregate type, else 0. */
4177 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4184 if (sh
->index
== indexNil
)
4187 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4188 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4189 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4193 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4194 if (rn
->rfd
== 0xfff)
4195 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4203 /* Lookup the type at relative index RN. Return it in TPP
4204 if found and in any event come up with its name PNAME.
4205 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4206 Return value says how many aux symbols we ate. */
4209 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. */
4210 char **pname
, int bigend
, char *sym_name
)
4219 struct mdebug_pending
*pend
;
4221 *tpp
= (struct type
*) NULL
;
4223 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4225 /* Escape index means 'the next one' */
4226 if (rn
->rfd
== 0xfff)
4229 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4236 /* mips cc uses a rf of -1 for opaque struct definitions.
4237 Set TYPE_FLAG_STUB for these types so that check_typedef will
4238 resolve them if the struct gets defined in another compilation unit. */
4241 *pname
= "<undefined>";
4242 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4246 /* mips cc uses an escaped rn->index of 0 for struct return types
4247 of procedures that were compiled without -g. These will always remain
4249 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4251 *pname
= "<undefined>";
4255 /* Find the relative file descriptor and the symbol in it. */
4256 fh
= get_rfd (fd
, rf
);
4257 xref_fd
= fh
- debug_info
->fdr
;
4259 if (rn
->index
>= fh
->csym
)
4261 /* File indirect entry is corrupt. */
4262 *pname
= "<illegal>";
4263 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4267 /* If we have processed this symbol then we left a forwarding
4268 pointer to the type in the pending list. If not, we`ll put
4269 it in a list of pending types, to be processed later when
4270 the file will be. In any event, we collect the name for the
4273 esh
= ((char *) debug_info
->external_sym
4274 + ((fh
->isymBase
+ rn
->index
)
4275 * debug_swap
->external_sym_size
));
4276 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4278 /* Make sure that this type of cross reference can be handled. */
4279 if ((sh
.sc
!= scInfo
4280 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4281 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4282 && sh
.st
!= stEnum
))
4283 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4285 /* File indirect entry is corrupt. */
4286 *pname
= "<illegal>";
4287 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4291 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4293 pend
= is_pending_symbol (fh
, esh
);
4298 /* We have not yet seen this type. */
4300 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4304 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4306 a) forward declarations of structs/unions/enums which are not
4307 defined in this compilation unit.
4308 For these the type will be void. This is a bad design decision
4309 as cross referencing across compilation units is impossible
4310 due to the missing name.
4311 b) forward declarations of structs/unions/enums/typedefs which
4312 are defined later in this file or in another file in the same
4313 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4314 Simply cross reference those again to get the true type.
4315 The forward references are not entered in the pending list and
4316 in the symbol table. */
4318 (*debug_swap
->swap_tir_in
) (bigend
,
4319 &(debug_info
->external_aux
4320 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4322 if (tir
.tq0
!= tqNil
)
4323 complaint (&symfile_complaints
,
4324 "illegal tq0 in forward typedef for %s", sym_name
);
4328 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4330 *pname
= "<undefined>";
4337 (debug_info
->external_aux
4338 + fh
->iauxBase
+ sh
.index
+ 1),
4339 tpp
, type_code
, pname
,
4340 fh
->fBigendian
, sym_name
);
4344 /* Follow a forward typedef. This might recursively
4345 call cross_ref till we get a non typedef'ed type.
4346 FIXME: This is not correct behaviour, but gdb currently
4347 cannot handle typedefs without type copying. Type
4348 copying is impossible as we might have mutual forward
4349 references between two files and the copied type would not
4350 get filled in when we later parse its definition. */
4351 *tpp
= parse_type (xref_fd
,
4352 debug_info
->external_aux
+ fh
->iauxBase
,
4356 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4357 add_pending (fh
, esh
, *tpp
);
4361 complaint (&symfile_complaints
,
4362 "illegal bt %d in forward typedef for %s", tir
.bt
,
4364 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4370 else if (sh
.st
== stTypedef
)
4372 /* Parse the type for a normal typedef. This might recursively call
4373 cross_ref till we get a non typedef'ed type.
4374 FIXME: This is not correct behaviour, but gdb currently
4375 cannot handle typedefs without type copying. But type copying is
4376 impossible as we might have mutual forward references between
4377 two files and the copied type would not get filled in when
4378 we later parse its definition. */
4379 *tpp
= parse_type (xref_fd
,
4380 debug_info
->external_aux
+ fh
->iauxBase
,
4384 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4388 /* Cross reference to a struct/union/enum which is defined
4389 in another file in the same compilation unit but that file
4390 has not been parsed yet.
4391 Initialize the type only, it will be filled in when
4392 it's definition is parsed. */
4393 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4395 add_pending (fh
, esh
, *tpp
);
4398 /* We used one auxent normally, two if we got a "next one" rf. */
4403 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4404 keeping the symtab sorted */
4406 static struct symbol
*
4407 mylookup_symbol (char *name
, struct block
*block
,
4408 domain_enum domain
, enum address_class
class)
4410 struct dict_iterator iter
;
4415 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4417 if (DEPRECATED_SYMBOL_NAME (sym
)[0] == inc
4418 && SYMBOL_DOMAIN (sym
) == domain
4419 && SYMBOL_CLASS (sym
) == class
4420 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), name
) == 0)
4424 block
= BLOCK_SUPERBLOCK (block
);
4426 return mylookup_symbol (name
, block
, domain
, class);
4431 /* Add a new symbol S to a block B. */
4434 add_symbol (struct symbol
*s
, struct block
*b
)
4436 dict_add_symbol (BLOCK_DICT (b
), s
);
4439 /* Add a new block B to a symtab S */
4442 add_block (struct block
*b
, struct symtab
*s
)
4444 struct blockvector
*bv
= BLOCKVECTOR (s
);
4446 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4447 (sizeof (struct blockvector
)
4448 + BLOCKVECTOR_NBLOCKS (bv
)
4449 * sizeof (bv
->block
)));
4450 if (bv
!= BLOCKVECTOR (s
))
4451 BLOCKVECTOR (s
) = bv
;
4453 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4456 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4457 MIPS' linenumber encoding might need more than one byte
4458 to describe it, LAST is used to detect these continuation lines.
4460 Combining lines with the same line number seems like a bad idea.
4461 E.g: There could be a line number entry with the same line number after the
4462 prologue and GDB should not ignore it (this is a better way to find
4463 a prologue than mips_skip_prologue).
4464 But due to the compressed line table format there are line number entries
4465 for the same line which are needed to bridge the gap to the next
4466 line number entry. These entries have a bogus address info with them
4467 and we are unable to tell them from intended duplicate line number
4469 This is another reason why -ggdb debugging format is preferable. */
4472 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4474 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4475 Change them to something sensible. */
4479 last
= -2; /* make sure we record first line */
4481 if (last
== lineno
) /* skip continuation lines */
4484 lt
->item
[lt
->nitems
].line
= lineno
;
4485 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4489 /* Sorting and reordering procedures */
4491 /* Blocks with a smaller low bound should come first */
4494 compare_blocks (const void *arg1
, const void *arg2
)
4497 struct block
**b1
= (struct block
**) arg1
;
4498 struct block
**b2
= (struct block
**) arg2
;
4500 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4502 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4506 /* Sort the blocks of a symtab S.
4507 Reorder the blocks in the blockvector by code-address,
4508 as required by some MI search routines */
4511 sort_blocks (struct symtab
*s
)
4513 struct blockvector
*bv
= BLOCKVECTOR (s
);
4515 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4518 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4519 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4520 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4521 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4525 * This is very unfortunate: normally all functions are compiled in
4526 * the order they are found, but if the file is compiled -O3 things
4527 * are very different. It would be nice to find a reliable test
4528 * to detect -O3 images in advance.
4530 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4531 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4532 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4533 sizeof (struct block
*),
4538 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4540 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4541 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4542 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4543 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4546 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4547 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4549 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4550 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4551 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4552 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4556 /* Constructor/restructor/destructor procedures */
4558 /* Allocate a new symtab for NAME. Needs an estimate of how many
4559 linenumbers MAXLINES we'll put in it */
4561 static struct symtab
*
4562 new_symtab (char *name
, int maxlines
, struct objfile
*objfile
)
4564 struct symtab
*s
= allocate_symtab (name
, objfile
);
4566 LINETABLE (s
) = new_linetable (maxlines
);
4568 /* All symtabs must have at least two blocks */
4569 BLOCKVECTOR (s
) = new_bvect (2);
4570 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4571 = new_block (NON_FUNCTION_BLOCK
);
4572 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4573 = new_block (NON_FUNCTION_BLOCK
);
4574 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4575 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4577 s
->free_code
= free_linetable
;
4578 s
->debugformat
= obsavestring ("ECOFF", 5,
4579 &objfile
->objfile_obstack
);
4583 /* Allocate a new partial_symtab NAME */
4585 static struct partial_symtab
*
4586 new_psymtab (char *name
, struct objfile
*objfile
)
4588 struct partial_symtab
*psymtab
;
4590 psymtab
= allocate_psymtab (name
, objfile
);
4591 psymtab
->section_offsets
= objfile
->section_offsets
;
4593 /* Keep a backpointer to the file's symbols */
4595 psymtab
->read_symtab_private
= ((char *)
4596 obstack_alloc (&objfile
->objfile_obstack
,
4597 sizeof (struct symloc
)));
4598 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4599 CUR_BFD (psymtab
) = cur_bfd
;
4600 DEBUG_SWAP (psymtab
) = debug_swap
;
4601 DEBUG_INFO (psymtab
) = debug_info
;
4602 PENDING_LIST (psymtab
) = pending_list
;
4604 /* The way to turn this into a symtab is to call... */
4605 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4610 /* Allocate a linetable array of the given SIZE. Since the struct
4611 already includes one item, we subtract one when calculating the
4612 proper size to allocate. */
4614 static struct linetable
*
4615 new_linetable (int size
)
4617 struct linetable
*l
;
4619 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4620 l
= (struct linetable
*) xmalloc (size
);
4625 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4626 I am not so sure about the 3.4 ones.
4628 Since the struct linetable already includes one item, we subtract one when
4629 calculating the proper size to allocate. */
4631 static struct linetable
*
4632 shrink_linetable (struct linetable
*lt
)
4635 return (struct linetable
*) xrealloc ((void *) lt
,
4636 (sizeof (struct linetable
)
4638 * sizeof (lt
->item
))));
4641 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4643 static struct blockvector
*
4644 new_bvect (int nblocks
)
4646 struct blockvector
*bv
;
4649 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4650 bv
= (struct blockvector
*) xzalloc (size
);
4652 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4657 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4658 is non-zero, assume the block is associated to a function, and make
4659 sure that the symbols are stored linearly; otherwise, store them
4662 static struct block
*
4663 new_block (enum block_type type
)
4665 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4666 allocate the block. Which, in turn, suggests that the block
4667 should be allocated on an obstack. */
4668 struct block
*retval
= xzalloc (sizeof (struct block
));
4670 if (type
== FUNCTION_BLOCK
)
4671 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4673 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4678 /* Create a new symbol with printname NAME */
4680 static struct symbol
*
4681 new_symbol (char *name
)
4683 struct symbol
*s
= ((struct symbol
*)
4684 obstack_alloc (¤t_objfile
->objfile_obstack
,
4685 sizeof (struct symbol
)));
4687 memset (s
, 0, sizeof (*s
));
4688 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4689 SYMBOL_SET_NAMES (s
, name
, strlen (name
), current_objfile
);
4693 /* Create a new type with printname NAME */
4695 static struct type
*
4696 new_type (char *name
)
4700 t
= alloc_type (current_objfile
);
4701 TYPE_NAME (t
) = name
;
4702 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4706 /* Read ECOFF debugging information from a BFD section. This is
4707 called from elfread.c. It parses the section into a
4708 ecoff_debug_info struct, and then lets the rest of the file handle
4712 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4713 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4715 bfd
*abfd
= objfile
->obfd
;
4716 struct ecoff_debug_info
*info
;
4717 struct cleanup
*back_to
;
4719 /* FIXME: It's not clear whether we should be getting minimal symbol
4720 information from .mdebug in an ELF file, or whether we will.
4721 Re-initialize the minimal symbol reader in case we do. */
4723 init_minimal_symbol_collection ();
4724 back_to
= make_cleanup_discard_minimal_symbols ();
4726 info
= ((struct ecoff_debug_info
*)
4727 obstack_alloc (&objfile
->objfile_obstack
,
4728 sizeof (struct ecoff_debug_info
)));
4730 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4731 error ("Error reading ECOFF debugging information: %s",
4732 bfd_errmsg (bfd_get_error ()));
4734 mdebug_build_psymtabs (objfile
, swap
, info
);
4736 install_minimal_symbols (objfile
);
4737 do_cleanups (back_to
);
4741 _initialize_mdebugread (void)
4744 init_type (TYPE_CODE_VOID
, 1,
4746 "void", (struct objfile
*) NULL
);
4748 init_type (TYPE_CODE_INT
, 1,
4750 "char", (struct objfile
*) NULL
);
4751 mdebug_type_unsigned_char
=
4752 init_type (TYPE_CODE_INT
, 1,
4754 "unsigned char", (struct objfile
*) NULL
);
4756 init_type (TYPE_CODE_INT
, 2,
4758 "short", (struct objfile
*) NULL
);
4759 mdebug_type_unsigned_short
=
4760 init_type (TYPE_CODE_INT
, 2,
4762 "unsigned short", (struct objfile
*) NULL
);
4763 mdebug_type_int_32
=
4764 init_type (TYPE_CODE_INT
, 4,
4766 "int", (struct objfile
*) NULL
);
4767 mdebug_type_unsigned_int_32
=
4768 init_type (TYPE_CODE_INT
, 4,
4770 "unsigned int", (struct objfile
*) NULL
);
4771 mdebug_type_int_64
=
4772 init_type (TYPE_CODE_INT
, 8,
4774 "int", (struct objfile
*) NULL
);
4775 mdebug_type_unsigned_int_64
=
4776 init_type (TYPE_CODE_INT
, 8,
4778 "unsigned int", (struct objfile
*) NULL
);
4779 mdebug_type_long_32
=
4780 init_type (TYPE_CODE_INT
, 4,
4782 "long", (struct objfile
*) NULL
);
4783 mdebug_type_unsigned_long_32
=
4784 init_type (TYPE_CODE_INT
, 4,
4786 "unsigned long", (struct objfile
*) NULL
);
4787 mdebug_type_long_64
=
4788 init_type (TYPE_CODE_INT
, 8,
4790 "long", (struct objfile
*) NULL
);
4791 mdebug_type_unsigned_long_64
=
4792 init_type (TYPE_CODE_INT
, 8,
4794 "unsigned long", (struct objfile
*) NULL
);
4795 mdebug_type_long_long_64
=
4796 init_type (TYPE_CODE_INT
, 8,
4798 "long long", (struct objfile
*) NULL
);
4799 mdebug_type_unsigned_long_long_64
=
4800 init_type (TYPE_CODE_INT
, 8,
4802 "unsigned long long", (struct objfile
*) NULL
);
4803 mdebug_type_adr_32
=
4804 init_type (TYPE_CODE_PTR
, 4,
4806 "adr_32", (struct objfile
*) NULL
);
4807 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4808 mdebug_type_adr_64
=
4809 init_type (TYPE_CODE_PTR
, 8,
4811 "adr_64", (struct objfile
*) NULL
);
4812 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4814 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4816 "float", (struct objfile
*) NULL
);
4817 mdebug_type_double
=
4818 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4820 "double", (struct objfile
*) NULL
);
4821 mdebug_type_complex
=
4822 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4824 "complex", (struct objfile
*) NULL
);
4825 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4826 mdebug_type_double_complex
=
4827 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4829 "double complex", (struct objfile
*) NULL
);
4830 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4832 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4834 mdebug_type_string
=
4835 init_type (TYPE_CODE_STRING
,
4836 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4838 (struct objfile
*) NULL
);
4840 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4841 good? Would we be better off with TYPE_CODE_ERROR? Should
4842 TYPE_CODE_ERROR print things in hex if it knows the size? */
4843 mdebug_type_fixed_dec
=
4844 init_type (TYPE_CODE_INT
,
4845 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4847 (struct objfile
*) NULL
);
4849 mdebug_type_float_dec
=
4850 init_type (TYPE_CODE_ERROR
,
4851 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4852 0, "floating decimal",
4853 (struct objfile
*) NULL
);
4855 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4856 "<function, no debug info>", NULL
);
4857 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4858 nodebug_var_symbol_type
=
4859 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4860 "<variable, no debug info>", NULL
);