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"
59 #include "mdebugread.h"
61 /* These are needed if the tm.h file does not contain the necessary
62 mips specific definitions. */
64 #ifndef MDEBUG_EFI_SYMBOL_NAME
65 #define MDEBUG_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
72 #include "gdb_string.h"
76 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
78 #include "libaout.h" /* Private BFD a.out information. */
79 #include "aout/aout64.h"
80 #include "aout/stab_gnu.h" /* STABS information */
82 #include "expression.h"
84 extern void _initialize_mdebugread (void);
86 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
87 We use this define in order to know whether we should override a
88 symbol's ECOFF section with its ELF section. This is necessary in
89 case the symbol's ELF section could not be represented in ECOFF. */
90 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
91 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
94 /* We put a pointer to this structure in the read_symtab_private field
99 /* Index of the FDR that this psymtab represents. */
101 /* The BFD that the psymtab was created from. */
103 const struct ecoff_debug_swap
*debug_swap
;
104 struct ecoff_debug_info
*debug_info
;
105 struct mdebug_pending
**pending_list
;
106 /* Pointer to external symbols for this file. */
108 /* Size of extern_tab. */
110 enum language pst_language
;
113 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
114 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
115 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
116 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
117 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
118 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
120 #define SC_IS_TEXT(sc) ((sc) == scText \
121 || (sc) == scRConst \
124 #define SC_IS_DATA(sc) ((sc) == scData \
129 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
130 #define SC_IS_BSS(sc) ((sc) == scBss)
131 #define SC_IS_SBSS(sc) ((sc) == scSBss)
132 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
134 /* Various complaints about symbol reading that don't abort the process */
136 index_complaint (const char *arg1
)
138 complaint (&symfile_complaints
, "bad aux index at symbol %s", arg1
);
142 unknown_ext_complaint (const char *arg1
)
144 complaint (&symfile_complaints
, "unknown external symbol %s", arg1
);
148 basic_type_complaint (int arg1
, const char *arg2
)
150 complaint (&symfile_complaints
, "cannot map ECOFF basic type 0x%x for %s",
155 bad_tag_guess_complaint (const char *arg1
)
157 complaint (&symfile_complaints
, "guessed tag type of %s incorrectly", arg1
);
161 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
163 complaint (&symfile_complaints
, "bad rfd entry for %s: file %d, index %d",
168 unexpected_type_code_complaint (const char *arg1
)
170 complaint (&symfile_complaints
, "unexpected type code for %s", arg1
);
173 /* Macros and extra defs */
175 /* Puns: hard to find whether -g was used and how */
177 #define MIN_GLEVEL GLEVEL_0
178 #define compare_glevel(a,b) \
179 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
180 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
182 /* Things that really are local to this module */
184 /* Remember what we deduced to be the source language of this psymtab. */
186 static enum language psymtab_language
= language_unknown
;
192 /* How to parse debugging information for CUR_BFD. */
194 static const struct ecoff_debug_swap
*debug_swap
;
196 /* Pointers to debugging information for CUR_BFD. */
198 static struct ecoff_debug_info
*debug_info
;
200 /* Pointer to current file decriptor record, and its index */
205 /* Index of current symbol */
209 /* Note how much "debuggable" this image is. We would like
210 to see at least one FDR with full symbols */
212 static int max_gdbinfo
;
213 static int max_glevel
;
215 /* When examining .o files, report on undefined symbols */
217 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
219 /* Pseudo symbol to use when putting stabs into the symbol table. */
221 static char stabs_symbol
[] = STABS_SYMBOL
;
223 /* Types corresponding to mdebug format bt* basic types. */
225 static struct type
*mdebug_type_void
;
226 static struct type
*mdebug_type_char
;
227 static struct type
*mdebug_type_short
;
228 static struct type
*mdebug_type_int_32
;
229 #define mdebug_type_int mdebug_type_int_32
230 static struct type
*mdebug_type_int_64
;
231 static struct type
*mdebug_type_long_32
;
232 static struct type
*mdebug_type_long_64
;
233 static struct type
*mdebug_type_long_long_64
;
234 static struct type
*mdebug_type_unsigned_char
;
235 static struct type
*mdebug_type_unsigned_short
;
236 static struct type
*mdebug_type_unsigned_int_32
;
237 static struct type
*mdebug_type_unsigned_int_64
;
238 static struct type
*mdebug_type_unsigned_long_32
;
239 static struct type
*mdebug_type_unsigned_long_64
;
240 static struct type
*mdebug_type_unsigned_long_long_64
;
241 static struct type
*mdebug_type_adr_32
;
242 static struct type
*mdebug_type_adr_64
;
243 static struct type
*mdebug_type_float
;
244 static struct type
*mdebug_type_double
;
245 static struct type
*mdebug_type_complex
;
246 static struct type
*mdebug_type_double_complex
;
247 static struct type
*mdebug_type_fixed_dec
;
248 static struct type
*mdebug_type_float_dec
;
249 static struct type
*mdebug_type_string
;
251 /* Types for symbols from files compiled without debugging info. */
253 static struct type
*nodebug_func_symbol_type
;
254 static struct type
*nodebug_var_symbol_type
;
256 /* Nonzero if we have seen ecoff debugging info for a file. */
258 static int found_ecoff_debugging_info
;
260 /* Forward declarations */
262 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
265 static void parse_partial_symbols (struct objfile
*);
267 static int has_opaque_xref (FDR
*, SYMR
*);
269 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
270 char **, int, char *);
272 static struct symbol
*new_symbol (char *);
274 static struct type
*new_type (char *);
276 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
278 static struct block
*new_block (enum block_type
);
280 static struct symtab
*new_symtab (char *, int, struct objfile
*);
282 static struct linetable
*new_linetable (int);
284 static struct blockvector
*new_bvect (int);
286 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
289 static struct symbol
*mylookup_symbol (char *, struct block
*, domain_enum
,
292 static void sort_blocks (struct symtab
*);
294 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
296 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
298 static void add_block (struct block
*, struct symtab
*);
300 static void add_symbol (struct symbol
*, struct block
*);
302 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
304 static struct linetable
*shrink_linetable (struct linetable
*);
306 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
309 static char *mdebug_next_symbol_text (struct objfile
*);
311 /* Allocate zeroed memory */
314 xzalloc (unsigned int size
)
316 void *p
= xmalloc (size
);
322 /* Exported procedure: Builds a symtab from the PST partial one.
323 Restores the environment in effect when PST was created, delegates
324 most of the work to an ancillary procedure, and sorts
325 and reorders the symtab list at the end */
328 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
336 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
337 gdb_flush (gdb_stdout
);
340 next_symbol_text_func
= mdebug_next_symbol_text
;
342 psymtab_to_symtab_1 (pst
, pst
->filename
);
344 /* Match with global symbols. This only needs to be done once,
345 after all of the symtabs and dependencies have been read in. */
346 scan_file_globals (pst
->objfile
);
349 printf_filtered ("done.\n");
352 /* File-level interface functions */
354 /* Find a file descriptor given its index RF relative to a file CF */
357 get_rfd (int cf
, int rf
)
363 fdrs
= debug_info
->fdr
;
365 /* Object files do not have the RFD table, all refs are absolute */
368 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
369 ((char *) debug_info
->external_rfd
371 * debug_swap
->external_rfd_size
)),
376 /* Return a safer print NAME for a file descriptor */
382 return "<stripped file>";
385 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
389 /* Read in and parse the symtab of the file OBJFILE. Symbols from
390 different sections are relocated via the SECTION_OFFSETS. */
393 mdebug_build_psymtabs (struct objfile
*objfile
,
394 const struct ecoff_debug_swap
*swap
,
395 struct ecoff_debug_info
*info
)
397 cur_bfd
= objfile
->obfd
;
401 stabsread_new_init ();
402 buildsym_new_init ();
403 free_header_files ();
404 init_header_files ();
406 /* Make sure all the FDR information is swapped in. */
407 if (info
->fdr
== (FDR
*) NULL
)
413 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->objfile_obstack
,
414 (info
->symbolic_header
.ifdMax
416 fdr_src
= info
->external_fdr
;
418 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
420 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
421 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
424 parse_partial_symbols (objfile
);
427 /* Check to make sure file was compiled with -g. If not, warn the
428 user of this limitation. */
429 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
431 if (max_gdbinfo
== 0)
432 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
434 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
435 gdb_flush (gdb_stdout
);
440 /* Local utilities */
442 /* Map of FDR indexes to partial symtabs */
446 struct partial_symtab
*pst
; /* the psymtab proper */
447 long n_globals
; /* exported globals (external symbols) */
448 long globals_offset
; /* cumulative */
452 /* Utility stack, used to nest procedures and blocks properly.
453 It is a doubly linked list, to avoid too many alloc/free.
454 Since we might need it quite a few times it is NOT deallocated
457 static struct parse_stack
459 struct parse_stack
*next
, *prev
;
460 struct symtab
*cur_st
; /* Current symtab. */
461 struct block
*cur_block
; /* Block in it. */
463 /* What are we parsing. stFile, or stBlock are for files and
464 blocks. stProc or stStaticProc means we have seen the start of a
465 procedure, but not the start of the block within in. When we see
466 the start of that block, we change it to stNil, without pushing a
467 new block, i.e. stNil means both a procedure and a block. */
471 struct type
*cur_type
; /* Type we parse fields for. */
472 int cur_field
; /* Field number in cur_type. */
473 CORE_ADDR procadr
; /* Start addres of this procedure */
474 int numargs
; /* Its argument count */
477 *top_stack
; /* Top stack ptr */
480 /* Enter a new lexical context */
483 push_parse_stack (void)
485 struct parse_stack
*new;
487 /* Reuse frames if possible */
488 if (top_stack
&& top_stack
->prev
)
489 new = top_stack
->prev
;
491 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
492 /* Initialize new frame with previous content */
495 struct parse_stack
*prev
= new->prev
;
498 top_stack
->prev
= new;
500 new->next
= top_stack
;
505 /* Exit a lexical context */
508 pop_parse_stack (void)
513 top_stack
= top_stack
->next
;
517 /* Cross-references might be to things we haven't looked at
518 yet, e.g. type references. To avoid too many type
519 duplications we keep a quick fixup table, an array
520 of lists of references indexed by file descriptor */
522 struct mdebug_pending
524 struct mdebug_pending
*next
; /* link */
525 char *s
; /* the unswapped symbol */
526 struct type
*t
; /* its partial type descriptor */
530 /* The pending information is kept for an entire object file, and used
531 to be in the deprecated_sym_private field. I took it out when I
532 split mdebugread from mipsread, because this might not be the only
533 type of symbols read from an object file. Instead, we allocate the
534 pending information table when we create the partial symbols, and
535 we store a pointer to the single table in each psymtab. */
537 static struct mdebug_pending
**pending_list
;
539 /* Check whether we already saw symbol SH in file FH */
541 static struct mdebug_pending
*
542 is_pending_symbol (FDR
*fh
, char *sh
)
544 int f_idx
= fh
- debug_info
->fdr
;
545 struct mdebug_pending
*p
;
547 /* Linear search is ok, list is typically no more than 10 deep */
548 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
554 /* Add a new symbol SH of type T */
557 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
559 int f_idx
= fh
- debug_info
->fdr
;
560 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
562 /* Make sure we do not make duplicates */
565 p
= ((struct mdebug_pending
*)
566 obstack_alloc (¤t_objfile
->objfile_obstack
,
567 sizeof (struct mdebug_pending
)));
570 p
->next
= pending_list
[f_idx
];
571 pending_list
[f_idx
] = p
;
576 /* Parsing Routines proper. */
578 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
579 For blocks, procedures and types we open a new lexical context.
580 This is basically just a big switch on the symbol's type. Argument
581 AX is the base pointer of aux symbols for this file (fh->iauxBase).
582 EXT_SH points to the unswapped symbol, which is needed for struct,
583 union, etc., types; it is NULL for an EXTR. BIGEND says whether
584 aux symbols are big-endian or little-endian. Return count of
585 SYMR's handled (normally one). */
588 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
589 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
591 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
592 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
596 struct mdebug_pending
*pend
;
600 enum address_class
class;
602 long svalue
= sh
->value
;
605 if (ext_sh
== (char *) NULL
)
606 name
= debug_info
->ssext
+ sh
->iss
;
608 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
614 /* Do not relocate relative values.
615 The value of a stEnd symbol is the displacement from the
616 corresponding start symbol value.
617 The value of a stBlock symbol is the displacement from the
618 procedure address. */
619 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
620 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
627 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
631 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
640 case stGlobal
: /* external symbol, goes into global block */
642 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
644 s
= new_symbol (name
);
645 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
648 case stStatic
: /* static data, goes into current block. */
650 b
= top_stack
->cur_block
;
651 s
= new_symbol (name
);
652 if (SC_IS_COMMON (sh
->sc
))
654 /* It is a FORTRAN common block. At least for SGI Fortran the
655 address is not in the symbol; we need to fix it later in
656 scan_file_globals. */
657 int bucket
= hashname (DEPRECATED_SYMBOL_NAME (s
));
658 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
659 global_sym_chain
[bucket
] = s
;
662 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
665 case stLocal
: /* local variable, goes into current block */
666 if (sh
->sc
== scRegister
)
668 class = LOC_REGISTER
;
669 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
673 b
= top_stack
->cur_block
;
674 s
= new_symbol (name
);
675 SYMBOL_VALUE (s
) = svalue
;
677 data
: /* Common code for symbols describing data */
678 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
679 SYMBOL_CLASS (s
) = class;
682 /* Type could be missing if file is compiled without debugging info. */
683 if (SC_IS_UNDEF (sh
->sc
)
684 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
685 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
687 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
688 /* Value of a data symbol is its memory address */
691 case stParam
: /* arg to procedure, goes into current block */
693 found_ecoff_debugging_info
= 1;
694 top_stack
->numargs
++;
696 /* Special GNU C++ name. */
697 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
698 name
= "this"; /* FIXME, not alloc'd in obstack */
699 s
= new_symbol (name
);
701 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
705 /* Pass by value in register. */
706 SYMBOL_CLASS (s
) = LOC_REGPARM
;
707 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
710 /* Pass by reference on stack. */
711 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
714 /* Pass by reference in register. */
715 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
716 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
719 /* Pass by value on stack. */
720 SYMBOL_CLASS (s
) = LOC_ARG
;
723 SYMBOL_VALUE (s
) = svalue
;
724 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
725 add_symbol (s
, top_stack
->cur_block
);
728 case stLabel
: /* label, goes into current block */
729 s
= new_symbol (name
);
730 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* so that it can be used */
731 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
732 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
733 SYMBOL_TYPE (s
) = mdebug_type_int
;
734 add_symbol (s
, top_stack
->cur_block
);
737 case stProc
: /* Procedure, usually goes into global block */
738 case stStaticProc
: /* Static procedure, goes into current block */
739 /* For stProc symbol records, we need to check the storage class
740 as well, as only (stProc, scText) entries represent "real"
741 procedures - See the Compaq document titled "Object File /
742 Symbol Table Format Specification" for more information.
743 If the storage class is not scText, we discard the whole block
744 of symbol records for this stProc. */
745 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
747 char *ext_tsym
= ext_sh
;
748 int keep_counting
= 1;
751 while (keep_counting
)
753 ext_tsym
+= external_sym_size
;
754 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
764 complaint (&symfile_complaints
,
765 "unknown symbol type 0x%x", sh
->st
);
771 s
= new_symbol (name
);
772 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
773 SYMBOL_CLASS (s
) = LOC_BLOCK
;
774 /* Type of the return value */
775 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
779 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
780 if (strcmp (name
, "malloc") == 0
781 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
783 /* I don't know why, but, at least under Alpha GNU/Linux,
784 when linking against a malloc without debugging
785 symbols, its read as a function returning void---this
786 is bad because it means we cannot call functions with
787 string arguments interactively; i.e., "call
788 printf("howdy\n")" would fail with the error message
789 "program has no memory available". To avoid this, we
790 patch up the type and make it void*
791 instead. (davidm@azstarnet.com)
793 t
= make_pointer_type (t
, NULL
);
796 b
= top_stack
->cur_block
;
797 if (sh
->st
== stProc
)
799 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
800 /* The next test should normally be true, but provides a
801 hook for nested functions (which we don't want to make
803 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
804 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
805 /* Irix 5 sometimes has duplicate names for the same
806 function. We want to add such names up at the global
807 level, not as a nested function. */
808 else if (sh
->value
== top_stack
->procadr
)
809 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
813 /* Make a type for the procedure itself */
814 SYMBOL_TYPE (s
) = lookup_function_type (t
);
816 /* All functions in C++ have prototypes. For C we don't have enough
817 information in the debug info. */
818 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
819 TYPE_FLAGS (SYMBOL_TYPE (s
)) |= TYPE_FLAG_PROTOTYPED
;
821 /* Create and enter a new lexical context */
822 b
= new_block (FUNCTION_BLOCK
);
823 SYMBOL_BLOCK_VALUE (s
) = b
;
824 BLOCK_FUNCTION (b
) = s
;
825 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
826 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
827 add_block (b
, top_stack
->cur_st
);
829 /* Not if we only have partial info */
830 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
834 top_stack
->cur_block
= b
;
835 top_stack
->blocktype
= sh
->st
;
836 top_stack
->cur_type
= SYMBOL_TYPE (s
);
837 top_stack
->cur_field
= -1;
838 top_stack
->procadr
= sh
->value
;
839 top_stack
->numargs
= 0;
842 /* Beginning of code for structure, union, and enum definitions.
843 They all share a common set of local variables, defined here. */
845 enum type_code type_code
;
851 case stStruct
: /* Start a block defining a struct type */
852 type_code
= TYPE_CODE_STRUCT
;
853 goto structured_common
;
855 case stUnion
: /* Start a block defining a union type */
856 type_code
= TYPE_CODE_UNION
;
857 goto structured_common
;
859 case stEnum
: /* Start a block defining an enum type */
860 type_code
= TYPE_CODE_ENUM
;
861 goto structured_common
;
863 case stBlock
: /* Either a lexical block, or some type */
864 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
865 goto case_stBlock_code
; /* Lexical block */
867 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
869 /* Common code for handling struct, union, enum, and/or as-yet-
870 unknown-type blocks of info about structured data. `type_code'
871 has been set to the proper TYPE_CODE, if we know it. */
873 found_ecoff_debugging_info
= 1;
875 top_stack
->blocktype
= stBlock
;
877 /* First count the number of fields and the highest value. */
880 for (ext_tsym
= ext_sh
+ external_sym_size
;
882 ext_tsym
+= external_sym_size
)
886 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
891 /* C++ encodes class types as structures where there the
892 methods are encoded as stProc. The scope of stProc
893 symbols also ends with stEnd, thus creating a risk of
894 taking the wrong stEnd symbol record as the end of
895 the current struct, which would cause GDB to undercount
896 the real number of fields in this struct. To make sure
897 we really reached the right stEnd symbol record, we
898 check the associated name, and match it against the
899 struct name. Since method names are mangled while
900 the class name is not, there is no risk of having a
901 method whose name is identical to the class name
902 (in particular constructor method names are different
903 from the class name). There is therefore no risk that
904 this check stops the count on the StEnd of a method.
906 Also, assume that we're really at the end when tsym.iss
908 if (tsym
.iss
== issNull
909 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
915 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
917 /* If the type of the member is Nil (or Void),
918 without qualifiers, assume the tag is an
920 Alpha cc -migrate enums are recognized by a zero
921 index and a zero symbol value.
922 DU 4.0 cc enums are recognized by a member type of
923 btEnum without qualifiers and a zero symbol value. */
924 if (tsym
.index
== indexNil
925 || (tsym
.index
== 0 && sh
->value
== 0))
926 type_code
= TYPE_CODE_ENUM
;
929 (*debug_swap
->swap_tir_in
) (bigend
,
930 &ax
[tsym
.index
].a_ti
,
932 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
933 || (tir
.bt
== btEnum
&& sh
->value
== 0))
935 type_code
= TYPE_CODE_ENUM
;
939 if (tsym
.value
> max_value
)
940 max_value
= tsym
.value
;
949 /* This is a no-op; is it trying to tell us something
950 we should be checking? */
951 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
955 /* This is something like a struct within a
956 struct. Skip over the fields of the inner
957 struct. The -1 is because the for loop will
958 increment ext_tsym. */
959 ext_tsym
= ((char *) debug_info
->external_sym
960 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
961 * external_sym_size
));
967 /* mips cc puts out a typedef for struct x if it is not yet
968 defined when it encounters
969 struct y { struct x *xp; };
974 /* Irix5 cc puts out a stIndirect for struct x if it is not
975 yet defined when it encounters
976 struct y { struct x *xp; };
981 complaint (&symfile_complaints
,
982 "declaration block contains unhandled symbol type %d",
988 /* In an stBlock, there is no way to distinguish structs,
989 unions, and enums at this point. This is a bug in the
990 original design (that has been fixed with the recent
991 addition of the stStruct, stUnion, and stEnum symbol
992 types.) The way you can tell is if/when you see a variable
993 or field of that type. In that case the variable's type
994 (in the AUX table) says if the type is struct, union, or
995 enum, and points back to the stBlock here. So you can
996 patch the tag kind up later - but only if there actually is
997 a variable or field of that type.
999 So until we know for sure, we will guess at this point.
1001 If the first member has index==indexNil or a void type,
1002 assume we have an enumeration.
1003 Otherwise, if there is more than one member, and all
1004 the members have offset 0, assume we have a union.
1005 Otherwise, assume we have a struct.
1007 The heuristic could guess wrong in the case of of an
1008 enumeration with no members or a union with one (or zero)
1009 members, or when all except the last field of a struct have
1010 width zero. These are uncommon and/or illegal situations,
1011 and in any case guessing wrong probably doesn't matter
1014 But if we later do find out we were wrong, we fixup the tag
1015 kind. Members of an enumeration must be handled
1016 differently from struct/union fields, and that is harder to
1017 patch up, but luckily we shouldn't need to. (If there are
1018 any enumeration members, we can tell for sure it's an enum
1021 if (type_code
== TYPE_CODE_UNDEF
)
1023 if (nfields
> 1 && max_value
== 0)
1024 type_code
= TYPE_CODE_UNION
;
1026 type_code
= TYPE_CODE_STRUCT
;
1029 /* Create a new type or use the pending type. */
1030 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1031 if (pend
== (struct mdebug_pending
*) NULL
)
1033 t
= new_type (NULL
);
1034 add_pending (cur_fdr
, ext_sh
, t
);
1039 /* Do not set the tag name if it is a compiler generated tag name
1040 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1041 Alpha cc puts out an sh->iss of zero for those. */
1042 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1043 TYPE_TAG_NAME (t
) = NULL
;
1045 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->objfile_obstack
,
1048 TYPE_CODE (t
) = type_code
;
1049 TYPE_LENGTH (t
) = sh
->value
;
1050 TYPE_NFIELDS (t
) = nfields
;
1051 TYPE_FIELDS (t
) = f
= ((struct field
*)
1053 nfields
* sizeof (struct field
)));
1055 if (type_code
== TYPE_CODE_ENUM
)
1057 int unsigned_enum
= 1;
1059 /* This is a non-empty enum. */
1061 /* DEC c89 has the number of enumerators in the sh.value field,
1062 not the type length, so we have to compensate for that
1063 incompatibility quirk.
1064 This might do the wrong thing for an enum with one or two
1065 enumerators and gcc -gcoff -fshort-enums, but these cases
1066 are hopefully rare enough.
1067 Alpha cc -migrate has a sh.value field of zero, we adjust
1069 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1070 || TYPE_LENGTH (t
) == 0)
1071 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1072 for (ext_tsym
= ext_sh
+ external_sym_size
;
1074 ext_tsym
+= external_sym_size
)
1077 struct symbol
*enum_sym
;
1079 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1081 if (tsym
.st
!= stMember
)
1084 FIELD_BITPOS (*f
) = tsym
.value
;
1085 FIELD_TYPE (*f
) = t
;
1086 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1087 FIELD_BITSIZE (*f
) = 0;
1088 FIELD_STATIC_KIND (*f
) = 0;
1090 enum_sym
= ((struct symbol
*)
1091 obstack_alloc (¤t_objfile
->objfile_obstack
,
1092 sizeof (struct symbol
)));
1093 memset (enum_sym
, 0, sizeof (struct symbol
));
1094 DEPRECATED_SYMBOL_NAME (enum_sym
) =
1095 obsavestring (f
->name
, strlen (f
->name
),
1096 ¤t_objfile
->objfile_obstack
);
1097 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1098 SYMBOL_TYPE (enum_sym
) = t
;
1099 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1100 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1101 if (SYMBOL_VALUE (enum_sym
) < 0)
1103 add_symbol (enum_sym
, top_stack
->cur_block
);
1105 /* Skip the stMembers that we've handled. */
1110 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1112 /* make this the current type */
1113 top_stack
->cur_type
= t
;
1114 top_stack
->cur_field
= 0;
1116 /* Do not create a symbol for alpha cc unnamed structs. */
1120 /* gcc puts out an empty struct for an opaque struct definitions,
1121 do not create a symbol for it either. */
1122 if (TYPE_NFIELDS (t
) == 0)
1124 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1128 s
= new_symbol (name
);
1129 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1130 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1131 SYMBOL_VALUE (s
) = 0;
1132 SYMBOL_TYPE (s
) = t
;
1133 add_symbol (s
, top_stack
->cur_block
);
1136 /* End of local variables shared by struct, union, enum, and
1137 block (as yet unknown struct/union/enum) processing. */
1141 found_ecoff_debugging_info
= 1;
1142 /* beginnning of (code) block. Value of symbol
1143 is the displacement from procedure start */
1144 push_parse_stack ();
1146 /* Do not start a new block if this is the outermost block of a
1147 procedure. This allows the LOC_BLOCK symbol to point to the
1148 block with the local variables, so funcname::var works. */
1149 if (top_stack
->blocktype
== stProc
1150 || top_stack
->blocktype
== stStaticProc
)
1152 top_stack
->blocktype
= stNil
;
1156 top_stack
->blocktype
= stBlock
;
1157 b
= new_block (NON_FUNCTION_BLOCK
);
1158 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1159 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1160 top_stack
->cur_block
= b
;
1161 add_block (b
, top_stack
->cur_st
);
1164 case stEnd
: /* end (of anything) */
1165 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1167 /* Finished with type */
1168 top_stack
->cur_type
= 0;
1170 else if (sh
->sc
== scText
&&
1171 (top_stack
->blocktype
== stProc
||
1172 top_stack
->blocktype
== stStaticProc
))
1174 /* Finished with procedure */
1175 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1176 struct mdebug_extra_func_info
*e
;
1177 struct block
*b
= top_stack
->cur_block
;
1178 struct type
*ftype
= top_stack
->cur_type
;
1181 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1183 /* Make up special symbol to contain procedure specific info */
1184 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1185 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1186 SYMBOL_CLASS (s
) = LOC_CONST
;
1187 SYMBOL_TYPE (s
) = mdebug_type_void
;
1188 e
= ((struct mdebug_extra_func_info
*)
1189 obstack_alloc (¤t_objfile
->objfile_obstack
,
1190 sizeof (struct mdebug_extra_func_info
)));
1191 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
1192 SYMBOL_VALUE (s
) = (long) e
;
1193 e
->numargs
= top_stack
->numargs
;
1194 e
->pdr
.framereg
= -1;
1195 add_symbol (s
, top_stack
->cur_block
);
1197 /* f77 emits proc-level with address bounds==[0,0],
1198 So look for such child blocks, and patch them. */
1199 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1201 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1202 if (BLOCK_SUPERBLOCK (b_bad
) == b
1203 && BLOCK_START (b_bad
) == top_stack
->procadr
1204 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1206 BLOCK_START (b_bad
) = BLOCK_START (b
);
1207 BLOCK_END (b_bad
) = BLOCK_END (b
);
1211 if (TYPE_NFIELDS (ftype
) <= 0)
1213 /* No parameter type information is recorded with the function's
1214 type. Set that from the type of the parameter symbols. */
1215 int nparams
= top_stack
->numargs
;
1221 struct dict_iterator iter
;
1222 TYPE_NFIELDS (ftype
) = nparams
;
1223 TYPE_FIELDS (ftype
) = (struct field
*)
1224 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1227 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1229 if (iparams
== nparams
)
1232 switch (SYMBOL_CLASS (sym
))
1237 case LOC_REGPARM_ADDR
:
1238 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1239 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1249 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1251 /* End of (code) block. The value of the symbol is the
1252 displacement from the procedure`s start address of the
1253 end of this block. */
1254 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1256 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1258 /* End of outermost block. Pop parse stack and ignore. The
1259 following stEnd of stProc will take care of the block. */
1262 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1264 /* End of file. Pop parse stack and ignore. Higher
1265 level code deals with this. */
1269 complaint (&symfile_complaints
,
1270 "stEnd with storage class %d not handled", sh
->sc
);
1272 pop_parse_stack (); /* restore previous lexical context */
1275 case stMember
: /* member of struct or union */
1276 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1277 FIELD_NAME (*f
) = name
;
1278 FIELD_BITPOS (*f
) = sh
->value
;
1280 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1281 FIELD_BITSIZE (*f
) = bitsize
;
1282 FIELD_STATIC_KIND (*f
) = 0;
1285 case stIndirect
: /* forward declaration on Irix5 */
1286 /* Forward declarations from Irix5 cc are handled by cross_ref,
1290 case stTypedef
: /* type definition */
1291 found_ecoff_debugging_info
= 1;
1293 /* Typedefs for forward declarations and opaque structs from alpha cc
1294 are handled by cross_ref, skip them. */
1298 /* Parse the type or use the pending type. */
1299 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1300 if (pend
== (struct mdebug_pending
*) NULL
)
1302 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1303 add_pending (cur_fdr
, ext_sh
, t
);
1308 /* mips cc puts out a typedef with the name of the struct for forward
1309 declarations. These should not go into the symbol table and
1310 TYPE_NAME should not be set for them.
1311 They can't be distinguished from an intentional typedef to
1312 the same name however:
1314 struct x { int ix; int jx; };
1318 struct xx {int ixx; int jxx; };
1319 generates a cross referencing stTypedef for x and xx.
1320 The user visible effect of this is that the type of a pointer
1321 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1322 The problem is fixed with alpha cc and Irix5 cc. */
1324 /* However if the typedef cross references to an opaque aggregate, it
1325 is safe to omit it from the symbol table. */
1327 if (has_opaque_xref (cur_fdr
, sh
))
1329 s
= new_symbol (name
);
1330 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1331 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1332 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1333 SYMBOL_TYPE (s
) = t
;
1334 add_symbol (s
, top_stack
->cur_block
);
1336 /* Incomplete definitions of structs should not get a name. */
1337 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1338 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1339 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1340 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1342 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1343 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1345 /* If we are giving a name to a type such as "pointer to
1346 foo" or "function returning foo", we better not set
1347 the TYPE_NAME. If the program contains "typedef char
1348 *caddr_t;", we don't want all variables of type char
1349 * to print as caddr_t. This is not just a
1350 consequence of GDB's type management; CC and GCC (at
1351 least through version 2.4) both output variables of
1352 either type char * or caddr_t with the type
1353 refering to the stTypedef symbol for caddr_t. If a future
1354 compiler cleans this up it GDB is not ready for it
1355 yet, but if it becomes ready we somehow need to
1356 disable this check (without breaking the PCC/GCC2.4
1361 Fortunately, this check seems not to be necessary
1362 for anything except pointers or functions. */
1365 TYPE_NAME (SYMBOL_TYPE (s
)) = DEPRECATED_SYMBOL_NAME (s
);
1369 case stFile
: /* file name */
1370 push_parse_stack ();
1371 top_stack
->blocktype
= sh
->st
;
1374 /* I`ve never seen these for C */
1376 break; /* register relocation */
1378 break; /* forwarding address */
1380 break; /* constant */
1382 complaint (&symfile_complaints
, "unknown symbol type 0x%x", sh
->st
);
1389 /* Parse the type information provided in the raw AX entries for
1390 the symbol SH. Return the bitfield size in BS, in case.
1391 We must byte-swap the AX entries before we use them; BIGEND says whether
1392 they are big-endian or little-endian (from fh->fBigendian). */
1394 static struct type
*
1395 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1396 int bigend
, char *sym_name
)
1398 /* Null entries in this map are treated specially */
1399 static struct type
**map_bt
[] =
1401 &mdebug_type_void
, /* btNil */
1402 &mdebug_type_adr_32
, /* btAdr */
1403 &mdebug_type_char
, /* btChar */
1404 &mdebug_type_unsigned_char
, /* btUChar */
1405 &mdebug_type_short
, /* btShort */
1406 &mdebug_type_unsigned_short
, /* btUShort */
1407 &mdebug_type_int_32
, /* btInt */
1408 &mdebug_type_unsigned_int_32
, /* btUInt */
1409 &mdebug_type_long_32
, /* btLong */
1410 &mdebug_type_unsigned_long_32
, /* btULong */
1411 &mdebug_type_float
, /* btFloat */
1412 &mdebug_type_double
, /* btDouble */
1419 &mdebug_type_complex
, /* btComplex */
1420 &mdebug_type_double_complex
, /* btDComplex */
1422 &mdebug_type_fixed_dec
, /* btFixedDec */
1423 &mdebug_type_float_dec
, /* btFloatDec */
1424 &mdebug_type_string
, /* btString */
1427 &mdebug_type_void
, /* btVoid */
1428 0, /* DEC C++: Pointer to member */
1429 0, /* DEC C++: Virtual function table */
1430 0, /* DEC C++: Class (Record) */
1431 &mdebug_type_long_64
, /* btLong64 */
1432 &mdebug_type_unsigned_long_64
, /* btULong64 */
1433 &mdebug_type_long_long_64
, /* btLongLong64 */
1434 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1435 &mdebug_type_adr_64
, /* btAdr64 */
1436 &mdebug_type_int_64
, /* btInt64 */
1437 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1441 struct type
*tp
= 0;
1442 enum type_code type_code
= TYPE_CODE_UNDEF
;
1444 /* Handle undefined types, they have indexNil. */
1445 if (aux_index
== indexNil
)
1446 return mdebug_type_int
;
1448 /* Handle corrupt aux indices. */
1449 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1451 index_complaint (sym_name
);
1452 return mdebug_type_int
;
1456 /* Use aux as a type information record, map its basic type. */
1457 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1458 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1460 basic_type_complaint (t
->bt
, sym_name
);
1461 return mdebug_type_int
;
1465 tp
= *map_bt
[t
->bt
];
1470 /* Cannot use builtin types -- build our own */
1474 type_code
= TYPE_CODE_STRUCT
;
1477 type_code
= TYPE_CODE_UNION
;
1480 type_code
= TYPE_CODE_ENUM
;
1483 type_code
= TYPE_CODE_RANGE
;
1486 type_code
= TYPE_CODE_SET
;
1489 /* alpha cc -migrate uses this for typedefs. The true type will
1490 be obtained by crossreferencing below. */
1491 type_code
= TYPE_CODE_ERROR
;
1494 /* alpha cc uses this for typedefs. The true type will be
1495 obtained by crossreferencing below. */
1496 type_code
= TYPE_CODE_ERROR
;
1499 basic_type_complaint (t
->bt
, sym_name
);
1500 return mdebug_type_int
;
1504 /* Move on to next aux */
1509 int width
= AUX_GET_WIDTH (bigend
, ax
);
1510 /* Inhibit core dumps if TIR is corrupted. */
1511 if (bs
== (int *) NULL
)
1513 /* Alpha cc -migrate encodes char and unsigned char types
1514 as short and unsigned short types with a field width of 8.
1515 Enum types also have a field width which we ignore for now. */
1516 if (t
->bt
== btShort
&& width
== 8)
1517 tp
= mdebug_type_char
;
1518 else if (t
->bt
== btUShort
&& width
== 8)
1519 tp
= mdebug_type_unsigned_char
;
1520 else if (t
->bt
== btEnum
)
1523 complaint (&symfile_complaints
, "can't handle TIR fBitfield for %s",
1531 /* A btIndirect entry cross references to an aux entry containing
1533 if (t
->bt
== btIndirect
)
1540 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1542 if (rn
->rfd
== 0xfff)
1544 rf
= AUX_GET_ISYM (bigend
, ax
);
1552 complaint (&symfile_complaints
,
1553 "unable to cross ref btIndirect for %s", sym_name
);
1554 return mdebug_type_int
;
1556 xref_fh
= get_rfd (fd
, rf
);
1557 xref_fd
= xref_fh
- debug_info
->fdr
;
1558 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1559 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1562 /* All these types really point to some (common) MIPS type
1563 definition, and only the type-qualifiers fully identify
1564 them. We'll make the same effort at sharing. */
1565 if (t
->bt
== btStruct
||
1569 /* btSet (I think) implies that the name is a tag name, not a typedef
1570 name. This apparently is a MIPS extension for C sets. */
1575 /* Try to cross reference this type, build new type on failure. */
1576 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1577 if (tp
== (struct type
*) NULL
)
1578 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1580 /* DEC c89 produces cross references to qualified aggregate types,
1581 dereference them. */
1582 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1583 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1584 tp
= TYPE_TARGET_TYPE (tp
);
1586 /* Make sure that TYPE_CODE(tp) has an expected type code.
1587 Any type may be returned from cross_ref if file indirect entries
1589 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1590 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1591 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1593 unexpected_type_code_complaint (sym_name
);
1598 /* Usually, TYPE_CODE(tp) is already type_code. The main
1599 exception is if we guessed wrong re struct/union/enum.
1600 But for struct vs. union a wrong guess is harmless, so
1601 don't complain(). */
1602 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1603 && type_code
!= TYPE_CODE_ENUM
)
1604 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1605 && type_code
== TYPE_CODE_ENUM
))
1607 bad_tag_guess_complaint (sym_name
);
1610 if (TYPE_CODE (tp
) != type_code
)
1612 TYPE_CODE (tp
) = type_code
;
1615 /* Do not set the tag name if it is a compiler generated tag name
1616 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1617 if (name
[0] == '.' || name
[0] == '\0')
1618 TYPE_TAG_NAME (tp
) = NULL
;
1619 else if (TYPE_TAG_NAME (tp
) == NULL
1620 || strcmp (TYPE_TAG_NAME (tp
), name
) != 0)
1621 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1622 ¤t_objfile
->objfile_obstack
);
1626 /* All these types really point to some (common) MIPS type
1627 definition, and only the type-qualifiers fully identify
1628 them. We'll make the same effort at sharing.
1629 FIXME: We are not doing any guessing on range types. */
1630 if (t
->bt
== btRange
)
1634 /* Try to cross reference this type, build new type on failure. */
1635 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1636 if (tp
== (struct type
*) NULL
)
1637 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1639 /* Make sure that TYPE_CODE(tp) has an expected type code.
1640 Any type may be returned from cross_ref if file indirect entries
1642 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1644 unexpected_type_code_complaint (sym_name
);
1648 /* Usually, TYPE_CODE(tp) is already type_code. The main
1649 exception is if we guessed wrong re struct/union/enum. */
1650 if (TYPE_CODE (tp
) != type_code
)
1652 bad_tag_guess_complaint (sym_name
);
1653 TYPE_CODE (tp
) = type_code
;
1655 if (TYPE_NAME (tp
) == NULL
1656 || strcmp (TYPE_NAME (tp
), name
) != 0)
1657 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1658 ¤t_objfile
->objfile_obstack
);
1661 if (t
->bt
== btTypedef
)
1665 /* Try to cross reference this type, it should succeed. */
1666 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1667 if (tp
== (struct type
*) NULL
)
1669 complaint (&symfile_complaints
,
1670 "unable to cross ref btTypedef for %s", sym_name
);
1671 tp
= mdebug_type_int
;
1675 /* Deal with range types */
1676 if (t
->bt
== btRange
)
1678 TYPE_NFIELDS (tp
) = 2;
1679 TYPE_FIELDS (tp
) = ((struct field
*)
1680 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1681 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1682 ¤t_objfile
->objfile_obstack
);
1683 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1685 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1686 ¤t_objfile
->objfile_obstack
);
1687 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1691 /* Parse all the type qualifiers now. If there are more
1692 than 6 the game will continue in the next aux */
1696 #define PARSE_TQ(tq) \
1697 if (t->tq != tqNil) \
1698 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1710 /* mips cc 2.x and gcc never put out continued aux entries. */
1714 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1718 /* Complain for illegal continuations due to corrupt aux entries. */
1720 complaint (&symfile_complaints
, "illegal TIR continued for %s", sym_name
);
1725 /* Make up a complex type from a basic one. Type is passed by
1726 reference in TPP and side-effected as necessary. The type
1727 qualifier TQ says how to handle the aux symbols at AX for
1728 the symbol SX we are currently analyzing. BIGEND says whether
1729 aux symbols are big-endian or little-endian.
1730 Returns the number of aux symbols we parsed. */
1733 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1739 /* Used in array processing */
1750 t
= lookup_pointer_type (*tpp
);
1755 t
= lookup_function_type (*tpp
);
1762 /* Determine and record the domain type (type of index) */
1763 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1769 rf
= AUX_GET_ISYM (bigend
, ax
);
1772 fh
= get_rfd (fd
, rf
);
1774 indx
= parse_type (fh
- debug_info
->fdr
,
1775 debug_info
->external_aux
+ fh
->iauxBase
,
1776 id
, (int *) NULL
, bigend
, sym_name
);
1778 /* The bounds type should be an integer type, but might be anything
1779 else due to corrupt aux entries. */
1780 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1782 complaint (&symfile_complaints
,
1783 "illegal array index type for %s, assuming int", sym_name
);
1784 indx
= mdebug_type_int
;
1787 /* Get the bounds, and create the array type. */
1789 lower
= AUX_GET_DNLOW (bigend
, ax
);
1791 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1793 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1795 range
= create_range_type ((struct type
*) NULL
, indx
,
1798 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1800 /* We used to fill in the supplied array element bitsize
1801 here if the TYPE_LENGTH of the target type was zero.
1802 This happens for a `pointer to an array of anonymous structs',
1803 but in this case the array element bitsize is also zero,
1804 so nothing is gained.
1805 And we used to check the TYPE_LENGTH of the target type against
1806 the supplied array element bitsize.
1807 gcc causes a mismatch for `pointer to array of object',
1808 since the sdb directives it uses do not have a way of
1809 specifying the bitsize, but it does no harm (the
1810 TYPE_LENGTH should be correct) and we should be able to
1811 ignore the erroneous bitsize from the auxiliary entry safely.
1812 dbx seems to ignore it too. */
1814 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1816 if (TYPE_LENGTH (*tpp
) == 0)
1818 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1825 /* Volatile -- currently ignored */
1829 /* Const -- currently ignored */
1833 complaint (&symfile_complaints
, "unknown type qualifier 0x%x", tq
);
1839 /* Parse a procedure descriptor record PR. Note that the procedure is
1840 parsed _after_ the local symbols, now we just insert the extra
1841 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1842 already been placed in the procedure's main block. Note also that
1843 images that have been partially stripped (ld -x) have been deprived
1844 of local symbols, and we have to cope with them here. FIRST_OFF is
1845 the offset of the first procedure for this FDR; we adjust the
1846 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1847 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1848 in question, or NULL to use top_stack->cur_block. */
1850 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1853 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1854 struct partial_symtab
*pst
)
1856 struct symbol
*s
, *i
;
1858 struct mdebug_extra_func_info
*e
;
1861 /* Simple rule to find files linked "-x" */
1862 if (cur_fdr
->rss
== -1)
1866 /* Static procedure at address pr->adr. Sigh. */
1867 /* FIXME-32x64. assuming pr->adr fits in long. */
1868 complaint (&symfile_complaints
,
1869 "can't handle PDR for static proc at 0x%lx",
1870 (unsigned long) pr
->adr
);
1878 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1879 ((char *) debug_info
->external_ext
1881 * debug_swap
->external_ext_size
)),
1883 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1891 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1892 ((char *) debug_info
->external_sym
1893 + ((cur_fdr
->isymBase
+ pr
->isym
)
1894 * debug_swap
->external_sym_size
)),
1896 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1899 if (search_symtab
!= NULL
)
1902 /* This loses both in the case mentioned (want a static, find a global),
1903 but also if we are looking up a non-mangled name which happens to
1904 match the name of a mangled function. */
1905 /* We have to save the cur_fdr across the call to lookup_symbol.
1906 If the pdr is for a static function and if a global function with
1907 the same name exists, lookup_symbol will eventually read in the symtab
1908 for the global function and clobber cur_fdr. */
1909 FDR
*save_cur_fdr
= cur_fdr
;
1910 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0, NULL
);
1911 cur_fdr
= save_cur_fdr
;
1915 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1921 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1922 VAR_DOMAIN
, LOC_BLOCK
);
1926 b
= SYMBOL_BLOCK_VALUE (s
);
1930 complaint (&symfile_complaints
, "PDR for %s, but no symbol", sh_name
);
1934 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1935 s
= new_symbol (sh_name
);
1936 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1937 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1938 /* Donno its type, hope int is ok */
1939 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1940 add_symbol (s
, top_stack
->cur_block
);
1941 /* Wont have symbols for this one */
1943 SYMBOL_BLOCK_VALUE (s
) = b
;
1944 BLOCK_FUNCTION (b
) = s
;
1945 BLOCK_START (b
) = pr
->adr
;
1946 /* BOUND used to be the end of procedure's text, but the
1947 argument is no longer passed in. */
1948 BLOCK_END (b
) = bound
;
1949 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1950 add_block (b
, top_stack
->cur_st
);
1954 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
1958 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE (i
);
1960 e
->pdr
.isym
= (long) s
;
1962 /* GDB expects the absolute function start address for the
1963 procedure descriptor in e->pdr.adr.
1964 As the address in the procedure descriptor is usually relative,
1965 we would have to relocate e->pdr.adr with cur_fdr->adr and
1966 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1967 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1968 in shared libraries on some systems, and on other systems
1969 e->pdr.adr is sometimes offset by a bogus value.
1970 To work around these problems, we replace e->pdr.adr with
1971 the start address of the function. */
1972 e
->pdr
.adr
= BLOCK_START (b
);
1974 /* Correct incorrect setjmp procedure descriptor from the library
1975 to make backtrace through setjmp work. */
1976 if (e
->pdr
.pcreg
== 0
1977 && strcmp (sh_name
, "setjmp") == 0)
1979 complaint (&symfile_complaints
, "fixing bad setjmp PDR from libc");
1980 e
->pdr
.pcreg
= RA_REGNUM
;
1981 e
->pdr
.regmask
= 0x80000000;
1982 e
->pdr
.regoffset
= -4;
1986 /* It would be reasonable that functions that have been compiled
1987 without debugging info have a btNil type for their return value,
1988 and functions that are void and are compiled with debugging info
1990 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1991 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1993 The glevel field in cur_fdr could be used to determine the presence
1994 of debugging info, but GCC doesn't always pass the -g switch settings
1995 to the assembler and GAS doesn't set the glevel field from the -g switch
1997 To work around these problems, the return value type of a TYPE_CODE_VOID
1998 function is adjusted accordingly if no debugging info was found in the
1999 compilation unit. */
2001 if (processing_gcc_compilation
== 0
2002 && found_ecoff_debugging_info
== 0
2003 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2004 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2007 /* Relocate the extra function info pointed to by the symbol table. */
2010 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2012 struct mdebug_extra_func_info
*e
;
2014 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE (sym
);
2016 e
->pdr
.adr
+= delta
;
2019 /* Parse the external symbol ES. Just call parse_symbol() after
2020 making sure we know where the aux are for it.
2021 BIGEND says whether aux entries are big-endian or little-endian.
2023 This routine clobbers top_stack->cur_block and ->cur_st. */
2025 static void parse_external (EXTR
*, int, struct section_offsets
*,
2029 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2030 struct objfile
*objfile
)
2034 if (es
->ifd
!= ifdNil
)
2037 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2038 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2042 cur_fdr
= debug_info
->fdr
;
2046 /* Reading .o files */
2047 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2050 switch (es
->asym
.st
)
2053 /* These are generated for static symbols in .o files,
2074 /* FIXME: Turn this into a complaint? */
2076 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2077 what
, debug_info
->ssext
+ es
->asym
.iss
,
2078 fdr_name (cur_fdr
));
2082 switch (es
->asym
.st
)
2086 /* There is no need to parse the external procedure symbols.
2087 If they are from objects compiled without -g, their index will
2088 be indexNil, and the symbol definition from the minimal symbol
2089 is preferrable (yielding a function returning int instead of int).
2090 If the index points to a local procedure symbol, the local
2091 symbol already provides the correct type.
2092 Note that the index of the external procedure symbol points
2093 to the local procedure symbol in the local symbol table, and
2094 _not_ to the auxiliary symbol info. */
2098 /* Global common symbols are resolved by the runtime loader,
2100 if (SC_IS_COMMON (es
->asym
.sc
))
2103 /* Note that the case of a symbol with indexNil must be handled
2104 anyways by parse_symbol(). */
2105 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2112 /* Parse the line number info for file descriptor FH into
2113 GDB's linetable LT. MIPS' encoding requires a little bit
2114 of magic to get things out. Note also that MIPS' line
2115 numbers can go back and forth, apparently we can live
2116 with that and do not need to reorder our linetables */
2118 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2119 struct partial_symtab
*, CORE_ADDR
);
2122 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2123 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2125 unsigned char *base
;
2127 int delta
, count
, lineno
= 0;
2129 if (fh
->cbLine
== 0)
2132 /* Scan by procedure descriptors */
2134 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2138 unsigned char *halt
;
2140 /* No code for this one */
2141 if (pr
->iline
== ilineNil
||
2142 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2145 /* Determine start and end address of compressed line bytes for
2147 base
= debug_info
->line
+ fh
->cbLineOffset
;
2148 if (j
!= (fh
->cpd
- 1))
2149 halt
= base
+ pr
[1].cbLineOffset
;
2151 halt
= base
+ fh
->cbLine
;
2152 base
+= pr
->cbLineOffset
;
2154 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2156 l
= adr
>> 2; /* in words */
2157 for (lineno
= pr
->lnLow
; base
< halt
;)
2159 count
= *base
& 0x0f;
2160 delta
= *base
++ >> 4;
2165 delta
= (base
[0] << 8) | base
[1];
2166 if (delta
>= 0x8000)
2170 lineno
+= delta
; /* first delta is 0 */
2172 /* Complain if the line table overflows. Could happen
2173 with corrupt binaries. */
2174 if (lt
->nitems
>= maxlines
)
2176 complaint (&symfile_complaints
,
2177 "guessed size of linetable for %s incorrectly",
2181 k
= add_line (lt
, lineno
, l
, k
);
2188 function_outside_compilation_unit_complaint (const char *arg1
)
2190 complaint (&symfile_complaints
,
2191 "function `%s' appears to be defined outside of all compilation units",
2195 /* Master parsing procedure for first-pass reading of file symbols
2196 into a partial_symtab. */
2199 parse_partial_symbols (struct objfile
*objfile
)
2201 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2202 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2203 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2204 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2205 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2206 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2208 HDRR
*hdr
= &debug_info
->symbolic_header
;
2209 /* Running pointers */
2217 struct partial_symtab
*pst
;
2218 int textlow_not_set
= 1;
2219 int past_first_source_file
= 0;
2221 /* List of current psymtab's include files */
2222 char **psymtab_include_list
;
2223 int includes_allocated
;
2226 struct pst_map
*fdr_to_pst
;
2227 /* Index within current psymtab dependency list */
2228 struct partial_symtab
**dependency_list
;
2229 int dependencies_used
, dependencies_allocated
;
2230 struct cleanup
*old_chain
;
2232 enum language prev_language
;
2233 asection
*text_sect
;
2234 int relocatable
= 0;
2236 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2237 the shared libraries are prelinked at a high memory address.
2238 We have to adjust the start address of the object file for this case,
2239 by setting it to the start address of the first procedure in the file.
2240 But we should do no adjustments if we are debugging a .o file, where
2241 the text section (and fh->adr) really starts at zero. */
2242 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2243 if (text_sect
!= NULL
2244 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2247 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->objfile_obstack
,
2248 sizeof (EXTR
) * hdr
->iextMax
);
2250 includes_allocated
= 30;
2252 psymtab_include_list
= (char **) alloca (includes_allocated
*
2254 next_symbol_text_func
= mdebug_next_symbol_text
;
2256 dependencies_allocated
= 30;
2257 dependencies_used
= 0;
2259 (struct partial_symtab
**) alloca (dependencies_allocated
*
2260 sizeof (struct partial_symtab
*));
2262 last_source_file
= NULL
;
2267 * Only parse the Local and External symbols, and the Relative FDR.
2268 * Fixup enough of the loader symtab to be able to use it.
2269 * Allocate space only for the file's portions we need to
2274 max_glevel
= MIN_GLEVEL
;
2276 /* Allocate the map FDR -> PST.
2277 Minor hack: -O3 images might claim some global data belongs
2278 to FDR -1. We`ll go along with that */
2279 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2280 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2283 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2284 fdr_to_pst
[-1].pst
= pst
;
2288 /* Allocate the global pending list. */
2290 ((struct mdebug_pending
**)
2291 obstack_alloc (&objfile
->objfile_obstack
,
2292 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2293 memset (pending_list
, 0,
2294 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2296 /* Pass 0 over external syms: swap them in. */
2297 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2298 make_cleanup (xfree
, ext_block
);
2300 ext_out
= (char *) debug_info
->external_ext
;
2301 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2303 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2304 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2306 /* Pass 1 over external syms: Presize and partition the list */
2308 ext_in_end
= ext_in
+ hdr
->iextMax
;
2309 for (; ext_in
< ext_in_end
; ext_in
++)
2311 /* See calls to complain below. */
2312 if (ext_in
->ifd
>= -1
2313 && ext_in
->ifd
< hdr
->ifdMax
2314 && ext_in
->asym
.iss
>= 0
2315 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2316 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2319 /* Pass 1.5 over files: partition out global symbol space */
2321 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2323 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2324 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2325 fdr_to_pst
[f_idx
].n_globals
= 0;
2330 For ECOFF in ELF, we skip the creation of the minimal symbols.
2331 The ECOFF symbols should be a subset of the Elf symbols, and the
2332 section information of the elf symbols will be more accurate.
2333 FIXME! What about Irix 5's native linker?
2335 By default, Elf sections which don't exist in ECOFF
2336 get put in ECOFF's absolute section by the gnu linker.
2337 Since absolute sections don't get relocated, we
2338 end up calculating an address different from that of
2339 the symbol's minimal symbol (created earlier from the
2342 To fix this, either :
2343 1) don't create the duplicate symbol
2344 (assumes ECOFF symtab is a subset of the ELF symtab;
2345 assumes no side-effects result from ignoring ECOFF symbol)
2346 2) create it, only if lookup for existing symbol in ELF's minimal
2349 assumes no side-effects result from ignoring ECOFF symbol)
2350 3) create it, but lookup ELF's minimal symbol and use it's section
2351 during relocation, then modify "uniqify" phase to merge and
2352 eliminate the duplicate symbol
2353 (highly inefficient)
2355 I've implemented #1 here...
2356 Skip the creation of the minimal symbols based on the ECOFF
2359 /* Pass 2 over external syms: fill in external symbols */
2361 ext_in_end
= ext_in
+ hdr
->iextMax
;
2362 for (; ext_in
< ext_in_end
; ext_in
++)
2364 enum minimal_symbol_type ms_type
= mst_text
;
2365 CORE_ADDR svalue
= ext_in
->asym
.value
;
2367 /* The Irix 5 native tools seem to sometimes generate bogus
2368 external symbols. */
2369 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2371 complaint (&symfile_complaints
,
2372 "bad ifd for external symbol: %d (max %ld)", ext_in
->ifd
,
2376 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2378 complaint (&symfile_complaints
,
2379 "bad iss for external symbol: %ld (max %ld)",
2380 ext_in
->asym
.iss
, hdr
->issExtMax
);
2384 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2385 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2388 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2392 /* Pass 3 over files, over local syms: fill in static symbols */
2393 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2395 /* Process ECOFF Symbol Types and Storage Classes */
2396 switch (ext_in
->asym
.st
)
2399 /* Beginnning of Procedure */
2400 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2403 /* Load time only static procs */
2404 ms_type
= mst_file_text
;
2405 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2408 /* External symbol */
2409 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2411 /* The value of a common symbol is its size, not its address.
2415 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2418 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2420 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2423 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2425 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2428 svalue
+= ANOFFSET (objfile
->section_offsets
,
2429 get_section_index (objfile
, ".sbss"));
2437 /* On certain platforms, some extra label symbols can be
2438 generated by the linker. One possible usage for this kind
2439 of symbols is to represent the address of the begining of a
2440 given section. For instance, on Tru64 5.1, the address of
2441 the _ftext label is the start address of the .text section.
2443 The storage class of these symbols is usually directly
2444 related to the section to which the symbol refers. For
2445 instance, on Tru64 5.1, the storage class for the _fdata
2446 label is scData, refering to the .data section.
2448 It is actually possible that the section associated to the
2449 storage class of the label does not exist. On True64 5.1
2450 for instance, the libm.so shared library does not contain
2451 any .data section, although it contains a _fpdata label
2452 which storage class is scData... Since these symbols are
2453 usually useless for the debugger user anyway, we just
2454 discard these symbols.
2457 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2459 if (objfile
->sect_index_text
== -1)
2462 ms_type
= mst_file_text
;
2463 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2465 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2467 if (objfile
->sect_index_data
== -1)
2470 ms_type
= mst_file_data
;
2471 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2473 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2475 if (objfile
->sect_index_bss
== -1)
2478 ms_type
= mst_file_bss
;
2479 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2481 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2483 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2485 if (sbss_sect_index
== -1)
2488 ms_type
= mst_file_bss
;
2489 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2496 /* The alpha has the section start addresses in stLocal symbols
2497 whose name starts with a `.'. Skip those but complain for all
2498 other stLocal symbols.
2499 Irix6 puts the section start addresses in stNil symbols, skip
2505 ms_type
= mst_unknown
;
2506 unknown_ext_complaint (name
);
2508 if (!ECOFF_IN_ELF (cur_bfd
))
2509 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2512 /* Pass 3 over files, over local syms: fill in static symbols */
2513 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2515 struct partial_symtab
*save_pst
;
2519 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2523 fdr_to_pst
[f_idx
].pst
= NULL
;
2527 /* Determine the start address for this object file from the
2528 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2532 if (relocatable
|| textlow
!= 0)
2533 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2537 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2540 objfile
->global_psymbols
.next
,
2541 objfile
->static_psymbols
.next
);
2542 pst
->read_symtab_private
= ((char *)
2543 obstack_alloc (&objfile
->objfile_obstack
,
2544 sizeof (struct symloc
)));
2545 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2548 FDR_IDX (pst
) = f_idx
;
2549 CUR_BFD (pst
) = cur_bfd
;
2550 DEBUG_SWAP (pst
) = debug_swap
;
2551 DEBUG_INFO (pst
) = debug_info
;
2552 PENDING_LIST (pst
) = pending_list
;
2554 /* The way to turn this into a symtab is to call... */
2555 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2557 /* Set up language for the pst.
2558 The language from the FDR is used if it is unambigious (e.g. cfront
2559 with native cc and g++ will set the language to C).
2560 Otherwise we have to deduce the language from the filename.
2561 Native ecoff has every header file in a separate FDR, so
2562 deduce_language_from_filename will return language_unknown for
2563 a header file, which is not what we want.
2564 But the FDRs for the header files are after the FDR for the source
2565 file, so we can assign the language of the source file to the
2566 following header files. Then we save the language in the private
2567 pst data so that we can reuse it when building symtabs. */
2568 prev_language
= psymtab_language
;
2572 case langCplusplusV2
:
2573 psymtab_language
= language_cplus
;
2576 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2579 if (psymtab_language
== language_unknown
)
2580 psymtab_language
= prev_language
;
2581 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2583 pst
->texthigh
= pst
->textlow
;
2585 /* For stabs-in-ecoff files, the second symbol must be @stab.
2586 This symbol is emitted by mips-tfile to signal that the
2587 current object file uses encapsulated stabs instead of mips
2588 ecoff for local symbols. (It is the second symbol because
2589 the first symbol is the stFile used to signal the start of a
2591 processing_gcc_compilation
= 0;
2594 (*swap_sym_in
) (cur_bfd
,
2595 ((char *) debug_info
->external_sym
2596 + (fh
->isymBase
+ 1) * external_sym_size
),
2598 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2600 processing_gcc_compilation
= 2;
2603 if (processing_gcc_compilation
!= 0)
2605 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2610 (*swap_sym_in
) (cur_bfd
,
2611 (((char *) debug_info
->external_sym
)
2612 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2614 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2615 if (!ECOFF_IS_STAB (&sh
))
2617 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2622 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2623 if (sh
.st
== stStaticProc
)
2625 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2626 prim_record_minimal_symbol_and_info (namestring
,
2630 SECT_OFF_TEXT (objfile
),
2634 procaddr
= sh
.value
;
2636 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2637 (debug_info
->external_aux
2640 (*swap_sym_in
) (cur_bfd
,
2641 ((char *) debug_info
->external_sym
2642 + ((fh
->isymBase
+ isym
- 1)
2643 * external_sym_size
)),
2647 CORE_ADDR high
= procaddr
+ sh
.value
;
2649 /* Kludge for Irix 5.2 zero fh->adr. */
2651 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2652 pst
->textlow
= procaddr
;
2653 if (high
> pst
->texthigh
)
2654 pst
->texthigh
= high
;
2657 else if (sh
.st
== stStatic
)
2672 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2673 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2674 prim_record_minimal_symbol_and_info (namestring
,
2678 SECT_OFF_DATA (objfile
),
2684 /* FIXME! Shouldn't this use cases for bss,
2685 then have the default be abs? */
2686 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2687 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2688 prim_record_minimal_symbol_and_info (namestring
,
2692 SECT_OFF_BSS (objfile
),
2700 /* Handle stabs continuation */
2702 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2703 int len
= strlen (stabstring
);
2704 while (stabstring
[len
- 1] == '\\')
2707 char *stabstring1
= stabstring
;
2711 /* Ignore continuation char from 1st string */
2714 /* Read next stabstring */
2716 (*swap_sym_in
) (cur_bfd
,
2717 (((char *) debug_info
->external_sym
)
2718 + (fh
->isymBase
+ cur_sdx
)
2719 * external_sym_size
),
2721 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2722 len2
= strlen (stabstring2
);
2724 /* Concatinate stabstring2 with stabstring1 */
2726 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2727 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2730 stabstring
= xmalloc (len
+ len2
+ 1);
2731 strcpy (stabstring
, stabstring1
);
2733 strcpy (stabstring
+ len
, stabstring2
);
2741 * Standard, external, non-debugger, symbols
2744 case N_TEXT
| N_EXT
:
2745 case N_NBTEXT
| N_EXT
:
2746 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2749 case N_DATA
| N_EXT
:
2750 case N_NBDATA
| N_EXT
:
2751 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2756 case N_NBBSS
| N_EXT
:
2757 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2758 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2765 /* Standard, local, non-debugger, symbols */
2769 /* We need to be able to deal with both N_FN or N_TEXT,
2770 because we have no way of knowing whether the sys-supplied ld
2771 or GNU ld was used to make the executable. Sequents throw
2772 in another wrinkle -- they renumbered N_FN. */
2780 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2783 case N_UNDF
| N_EXT
:
2784 continue; /* Just undefined, not COMMON */
2789 /* Lots of symbol types we can just ignore. */
2796 /* Keep going . . . */
2799 * Special symbol types for GNU
2802 case N_INDR
| N_EXT
:
2804 case N_SETA
| N_EXT
:
2806 case N_SETT
| N_EXT
:
2808 case N_SETD
| N_EXT
:
2810 case N_SETB
| N_EXT
:
2821 static int prev_so_symnum
= -10;
2822 static int first_so_symnum
;
2824 int prev_textlow_not_set
;
2826 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2828 prev_textlow_not_set
= textlow_not_set
;
2830 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2831 /* A zero value is probably an indication for the SunPRO 3.0
2832 compiler. end_psymtab explicitly tests for zero, so
2833 don't relocate it. */
2837 textlow_not_set
= 1;
2841 textlow_not_set
= 0;
2843 textlow_not_set
= 0;
2845 past_first_source_file
= 1;
2847 if (prev_so_symnum
!= symnum
- 1)
2848 { /* Here if prev stab wasn't N_SO */
2849 first_so_symnum
= symnum
;
2853 pst
= (struct partial_symtab
*) 0;
2855 dependencies_used
= 0;
2859 prev_so_symnum
= symnum
;
2861 /* End the current partial symtab and start a new one */
2863 /* SET_NAMESTRING ();*/
2864 namestring
= stabstring
;
2866 /* Null name means end of .o file. Don't start a new one. */
2867 if (*namestring
== '\000')
2870 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2871 The first one is a directory name; the second the file name.
2872 If pst exists, is empty, and has a filename ending in '/',
2873 we assume the previous N_SO was a directory name. */
2875 p
= strrchr (namestring
, '/');
2876 if (p
&& *(p
+ 1) == '\000')
2877 continue; /* Simply ignore directory name SOs */
2879 /* Some other compilers (C++ ones in particular) emit useless
2880 SOs for non-existant .c files. We ignore all subsequent SOs that
2881 immediately follow the first. */
2893 enum language tmp_language
;
2894 /* Mark down an include file in the current psymtab */
2896 /* SET_NAMESTRING ();*/
2897 namestring
= stabstring
;
2899 tmp_language
= deduce_language_from_filename (namestring
);
2901 /* Only change the psymtab's language if we've learned
2902 something useful (eg. tmp_language is not language_unknown).
2903 In addition, to match what start_subfile does, never change
2905 if (tmp_language
!= language_unknown
2906 && (tmp_language
!= language_c
2907 || psymtab_language
!= language_cplus
))
2908 psymtab_language
= tmp_language
;
2910 /* In C++, one may expect the same filename to come round many
2911 times, when code is coming alternately from the main file
2912 and from inline functions in other files. So I check to see
2913 if this is a file we've seen before -- either the main
2914 source file, or a previously included file.
2916 This seems to be a lot of time to be spending on N_SOL, but
2917 things like "break c-exp.y:435" need to work (I
2918 suppose the psymtab_include_list could be hashed or put
2919 in a binary tree, if profiling shows this is a major hog). */
2920 if (pst
&& strcmp (namestring
, pst
->filename
) == 0)
2924 for (i
= 0; i
< includes_used
; i
++)
2925 if (strcmp (namestring
,
2926 psymtab_include_list
[i
]) == 0)
2935 psymtab_include_list
[includes_used
++] = namestring
;
2936 if (includes_used
>= includes_allocated
)
2938 char **orig
= psymtab_include_list
;
2940 psymtab_include_list
= (char **)
2941 alloca ((includes_allocated
*= 2) *
2943 memcpy (psymtab_include_list
, orig
,
2944 includes_used
* sizeof (char *));
2948 case N_LSYM
: /* Typedef or automatic variable. */
2949 case N_STSYM
: /* Data seg var -- static */
2950 case N_LCSYM
: /* BSS " */
2951 case N_ROSYM
: /* Read-only data seg var -- static. */
2952 case N_NBSTS
: /* Gould nobase. */
2953 case N_NBLCS
: /* symbols. */
2955 case N_GSYM
: /* Global (extern) variable; can be
2956 data or bss (sigh FIXME). */
2958 /* Following may probably be ignored; I'll leave them here
2959 for now (until I do Pascal and Modula 2 extensions). */
2961 case N_PC
: /* I may or may not need this; I
2963 case N_M2C
: /* I suspect that I can ignore this here. */
2964 case N_SCOPE
: /* Same. */
2966 /* SET_NAMESTRING ();*/
2967 namestring
= stabstring
;
2968 p
= (char *) strchr (namestring
, ':');
2970 continue; /* Not a debugging symbol. */
2974 /* Main processing section for debugging symbols which
2975 the initial read through the symbol tables needs to worry
2976 about. If we reach this point, the symbol which we are
2977 considering is definitely one we are interested in.
2978 p must also contain the (valid) index into the namestring
2979 which indicates the debugging type symbol. */
2984 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2985 #ifdef STATIC_TRANSFORM_NAME
2986 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2988 add_psymbol_to_list (namestring
, p
- namestring
,
2989 VAR_DOMAIN
, LOC_STATIC
,
2990 &objfile
->static_psymbols
,
2992 psymtab_language
, objfile
);
2995 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2996 /* The addresses in these entries are reported to be
2997 wrong. See the code that reads 'G's for symtabs. */
2998 add_psymbol_to_list (namestring
, p
- namestring
,
2999 VAR_DOMAIN
, LOC_STATIC
,
3000 &objfile
->global_psymbols
,
3002 psymtab_language
, objfile
);
3006 /* When a 'T' entry is defining an anonymous enum, it
3007 may have a name which is the empty string, or a
3008 single space. Since they're not really defining a
3009 symbol, those shouldn't go in the partial symbol
3010 table. We do pick up the elements of such enums at
3011 'check_enum:', below. */
3012 if (p
>= namestring
+ 2
3013 || (p
== namestring
+ 1
3014 && namestring
[0] != ' '))
3016 add_psymbol_to_list (namestring
, p
- namestring
,
3017 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3018 &objfile
->static_psymbols
,
3020 psymtab_language
, objfile
);
3023 /* Also a typedef with the same name. */
3024 add_psymbol_to_list (namestring
, p
- namestring
,
3025 VAR_DOMAIN
, LOC_TYPEDEF
,
3026 &objfile
->static_psymbols
,
3028 psymtab_language
, objfile
);
3034 if (p
!= namestring
) /* a name is there, not just :T... */
3036 add_psymbol_to_list (namestring
, p
- namestring
,
3037 VAR_DOMAIN
, LOC_TYPEDEF
,
3038 &objfile
->static_psymbols
,
3040 psymtab_language
, objfile
);
3043 /* If this is an enumerated type, we need to
3044 add all the enum constants to the partial symbol
3045 table. This does not cover enums without names, e.g.
3046 "enum {a, b} c;" in C, but fortunately those are
3047 rare. There is no way for GDB to find those from the
3048 enum type without spending too much time on it. Thus
3049 to solve this problem, the compiler needs to put out the
3050 enum in a nameless type. GCC2 does this. */
3052 /* We are looking for something of the form
3053 <name> ":" ("t" | "T") [<number> "="] "e"
3054 {<constant> ":" <value> ","} ";". */
3056 /* Skip over the colon and the 't' or 'T'. */
3058 /* This type may be given a number. Also, numbers can come
3059 in pairs like (0,26). Skip over it. */
3060 while ((*p
>= '0' && *p
<= '9')
3061 || *p
== '(' || *p
== ',' || *p
== ')'
3067 /* The aix4 compiler emits extra crud before the members. */
3070 /* Skip over the type (?). */
3074 /* Skip over the colon. */
3078 /* We have found an enumerated type. */
3079 /* According to comments in read_enum_type
3080 a comma could end it instead of a semicolon.
3081 I don't know where that happens.
3083 while (*p
&& *p
!= ';' && *p
!= ',')
3087 /* Check for and handle cretinous dbx symbol name
3089 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3090 p
= next_symbol_text (objfile
);
3092 /* Point to the character after the name
3093 of the enum constant. */
3094 for (q
= p
; *q
&& *q
!= ':'; q
++)
3096 /* Note that the value doesn't matter for
3097 enum constants in psymtabs, just in symtabs. */
3098 add_psymbol_to_list (p
, q
- p
,
3099 VAR_DOMAIN
, LOC_CONST
,
3100 &objfile
->static_psymbols
, 0,
3101 0, psymtab_language
, objfile
);
3102 /* Point past the name. */
3104 /* Skip over the value. */
3105 while (*p
&& *p
!= ',')
3107 /* Advance past the comma. */
3114 /* Constant, e.g. from "const" in Pascal. */
3115 add_psymbol_to_list (namestring
, p
- namestring
,
3116 VAR_DOMAIN
, LOC_CONST
,
3117 &objfile
->static_psymbols
, sh
.value
,
3118 0, psymtab_language
, objfile
);
3124 int name_len
= p
- namestring
;
3125 char *name
= xmalloc (name_len
+ 1);
3126 memcpy (name
, namestring
, name_len
);
3127 name
[name_len
] = '\0';
3128 function_outside_compilation_unit_complaint (name
);
3131 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3132 add_psymbol_to_list (namestring
, p
- namestring
,
3133 VAR_DOMAIN
, LOC_BLOCK
,
3134 &objfile
->static_psymbols
,
3136 psymtab_language
, objfile
);
3139 /* Global functions were ignored here, but now they
3140 are put into the global psymtab like one would expect.
3141 They're also in the minimal symbol table. */
3145 int name_len
= p
- namestring
;
3146 char *name
= xmalloc (name_len
+ 1);
3147 memcpy (name
, namestring
, name_len
);
3148 name
[name_len
] = '\0';
3149 function_outside_compilation_unit_complaint (name
);
3152 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3153 add_psymbol_to_list (namestring
, p
- namestring
,
3154 VAR_DOMAIN
, LOC_BLOCK
,
3155 &objfile
->global_psymbols
,
3157 psymtab_language
, objfile
);
3160 /* Two things show up here (hopefully); static symbols of
3161 local scope (static used inside braces) or extensions
3162 of structure symbols. We can ignore both. */
3176 case '#': /* for symbol identification (used in live ranges) */
3180 /* It is a C++ nested symbol. We don't need to record it
3181 (I don't think); if we try to look up foo::bar::baz,
3182 then symbols for the symtab containing foo should get
3183 read in, I think. */
3184 /* Someone says sun cc puts out symbols like
3185 /foo/baz/maclib::/usr/local/bin/maclib,
3186 which would get here with a symbol type of ':'. */
3190 /* Unexpected symbol descriptor. The second and subsequent stabs
3191 of a continued stab can show up here. The question is
3192 whether they ever can mimic a normal stab--it would be
3193 nice if not, since we certainly don't want to spend the
3194 time searching to the end of every string looking for
3197 complaint (&symfile_complaints
,
3198 "unknown symbol descriptor `%c'", p
[1]);
3200 /* Ignore it; perhaps it is an extension that we don't
3209 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3210 /* Solaris 2 end of module, finish current partial
3211 symbol table. END_PSYMTAB will set
3212 pst->texthigh to the proper value, which is
3213 necessary if a module compiled without
3214 debugging info follows this module. */
3217 pst
= (struct partial_symtab
*) 0;
3219 dependencies_used
= 0;
3225 if (sh
.value
> save_pst
->texthigh
)
3226 save_pst
->texthigh
= sh
.value
;
3231 case N_SSYM
: /* Claim: Structure or union element.
3232 Hopefully, I can ignore this. */
3233 case N_ENTRY
: /* Alternate entry point; can ignore. */
3234 case N_MAIN
: /* Can definitely ignore this. */
3235 case N_CATCH
: /* These are GNU C++ extensions */
3236 case N_EHDECL
: /* that can safely be ignored here. */
3246 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3247 case N_DEFD
: /* GNU Modula-2 */
3248 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3250 case N_OBJ
: /* useless types from Solaris */
3252 /* These symbols aren't interesting; don't worry about them */
3257 /* If we haven't found it yet, ignore it. It's probably some
3258 new type we don't know about yet. */
3259 complaint (&symfile_complaints
, "unknown symbol type %s",
3260 hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3264 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3267 /* end - Handle continuation */
3272 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3275 enum address_class
class;
3277 (*swap_sym_in
) (cur_bfd
,
3278 ((char *) debug_info
->external_sym
3279 + ((fh
->isymBase
+ cur_sdx
)
3280 * external_sym_size
)),
3283 if (ECOFF_IS_STAB (&sh
))
3289 /* Non absolute static symbols go into the minimal table. */
3290 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3291 || (sh
.index
== indexNil
3292 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3294 /* FIXME, premature? */
3299 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3305 /* The value of a stEnd symbol is the displacement from the
3306 corresponding start symbol value, do not relocate it. */
3308 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3315 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3319 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3330 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3331 mst_file_text
, NULL
,
3332 SECT_OFF_TEXT (objfile
), NULL
,
3338 /* Ignore all parameter symbol records. */
3339 if (sh
.index
>= hdr
->iauxMax
)
3341 /* Should not happen, but does when cross-compiling
3342 with the MIPS compiler. FIXME -- pull later. */
3343 index_complaint (name
);
3344 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3347 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3348 (debug_info
->external_aux
3352 if (new_sdx
<= cur_sdx
)
3354 /* This should not happen either... FIXME. */
3355 complaint (&symfile_complaints
,
3356 "bad proc end in aux found from symbol %s",
3358 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3361 /* For stProc symbol records, we need to check the
3362 storage class as well, as only (stProc, scText)
3363 entries represent "real" procedures - See the
3364 Compaq document titled "Object File / Symbol Table
3365 Format Specification" for more information. If the
3366 storage class is not scText, we discard the whole
3367 block of symbol records for this stProc. */
3368 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3371 /* Usually there is a local and a global stProc symbol
3372 for a function. This means that the function name
3373 has already been entered into the mimimal symbol table
3374 while processing the global symbols in pass 2 above.
3375 One notable exception is the PROGRAM name from
3376 f77 compiled executables, it is only put out as
3377 local stProc symbol, and a global MAIN__ stProc symbol
3378 points to it. It doesn't matter though, as gdb is
3379 still able to find the PROGRAM name via the partial
3380 symbol table, and the MAIN__ symbol via the minimal
3382 if (sh
.st
== stProc
)
3383 add_psymbol_to_list (name
, strlen (name
),
3384 VAR_DOMAIN
, LOC_BLOCK
,
3385 &objfile
->global_psymbols
,
3386 0, sh
.value
, psymtab_language
, objfile
);
3388 add_psymbol_to_list (name
, strlen (name
),
3389 VAR_DOMAIN
, LOC_BLOCK
,
3390 &objfile
->static_psymbols
,
3391 0, sh
.value
, psymtab_language
, objfile
);
3393 procaddr
= sh
.value
;
3396 (*swap_sym_in
) (cur_bfd
,
3397 ((char *) debug_info
->external_sym
3398 + ((fh
->isymBase
+ cur_sdx
- 1)
3399 * external_sym_size
)),
3404 /* Kludge for Irix 5.2 zero fh->adr. */
3406 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3407 pst
->textlow
= procaddr
;
3409 high
= procaddr
+ sh
.value
;
3410 if (high
> pst
->texthigh
)
3411 pst
->texthigh
= high
;
3414 case stStatic
: /* Variable */
3415 if (SC_IS_DATA (sh
.sc
))
3416 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3417 mst_file_data
, NULL
,
3418 SECT_OFF_DATA (objfile
),
3422 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3424 SECT_OFF_BSS (objfile
),
3430 case stIndirect
: /* Irix5 forward declaration */
3431 /* Skip forward declarations from Irix5 cc */
3434 case stTypedef
: /* Typedef */
3435 /* Skip typedefs for forward declarations and opaque
3436 structs from alpha and mips cc. */
3437 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3439 class = LOC_TYPEDEF
;
3442 case stConstant
: /* Constant decl */
3449 case stBlock
: /* { }, str, un, enum */
3450 /* Do not create a partial symbol for cc unnamed aggregates
3451 and gcc empty aggregates. */
3452 if ((sh
.sc
== scInfo
3453 || SC_IS_COMMON (sh
.sc
))
3455 && sh
.index
!= cur_sdx
+ 2)
3457 add_psymbol_to_list (name
, strlen (name
),
3458 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3459 &objfile
->static_psymbols
,
3461 psymtab_language
, objfile
);
3463 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3465 /* Skip over the block */
3467 if (new_sdx
<= cur_sdx
)
3469 /* This happens with the Ultrix kernel. */
3470 complaint (&symfile_complaints
,
3471 "bad aux index at block symbol %s", name
);
3472 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3477 case stFile
: /* File headers */
3478 case stLabel
: /* Labels */
3479 case stEnd
: /* Ends of files */
3482 case stLocal
: /* Local variables */
3483 /* Normally these are skipped because we skip over
3484 all blocks we see. However, these can occur
3485 as visible symbols in a .h file that contains code. */
3489 /* Both complaints are valid: one gives symbol name,
3490 the other the offending symbol type. */
3491 complaint (&symfile_complaints
, "unknown local symbol %s",
3493 complaint (&symfile_complaints
, "with type %d", sh
.st
);
3497 /* Use this gdb symbol */
3498 add_psymbol_to_list (name
, strlen (name
),
3500 &objfile
->static_psymbols
,
3501 0, sh
.value
, psymtab_language
, objfile
);
3503 cur_sdx
++; /* Go to next file symbol */
3506 /* Now do enter the external symbols. */
3507 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3508 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3509 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3510 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3511 for (; --cur_sdx
>= 0; ext_ptr
++)
3513 enum address_class
class;
3518 if (ext_ptr
->ifd
!= f_idx
)
3519 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3520 psh
= &ext_ptr
->asym
;
3522 /* Do not add undefined symbols to the partial symbol table. */
3523 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3526 svalue
= psh
->value
;
3531 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3538 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3542 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3549 /* These are generated for static symbols in .o files,
3554 /* External procedure symbols have been entered
3555 into the minimal symbol table in pass 2 above.
3556 Ignore them, as parse_external will ignore them too. */
3562 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3563 /* Fall through, pretend it's global. */
3565 /* Global common symbols are resolved by the runtime loader,
3567 if (SC_IS_COMMON (psh
->sc
))
3573 name
= debug_info
->ssext
+ psh
->iss
;
3574 add_psymbol_to_list (name
, strlen (name
),
3576 &objfile
->global_psymbols
,
3578 psymtab_language
, objfile
);
3582 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3583 empty and put on the free list. */
3584 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3585 psymtab_include_list
, includes_used
,
3586 -1, save_pst
->texthigh
,
3587 dependency_list
, dependencies_used
, textlow_not_set
);
3589 dependencies_used
= 0;
3591 /* The objfile has its functions reordered if this partial symbol
3592 table overlaps any other partial symbol table.
3593 We cannot assume a reordered objfile if a partial symbol table
3594 is contained within another partial symbol table, as partial symbol
3595 tables for include files with executable code are contained
3596 within the partial symbol table for the including source file,
3597 and we do not want to flag the objfile reordered for these cases.
3599 This strategy works well for Irix-5.2 shared libraries, but we
3600 might have to use a more elaborate (and slower) algorithm for
3602 save_pst
= fdr_to_pst
[f_idx
].pst
;
3603 if (save_pst
!= NULL
3604 && save_pst
->textlow
!= 0
3605 && !(objfile
->flags
& OBJF_REORDERED
))
3607 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3610 && save_pst
->textlow
>= pst
->textlow
3611 && save_pst
->textlow
< pst
->texthigh
3612 && save_pst
->texthigh
> pst
->texthigh
)
3614 objfile
->flags
|= OBJF_REORDERED
;
3621 /* Now scan the FDRs for dependencies */
3622 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3624 fh
= f_idx
+ debug_info
->fdr
;
3625 pst
= fdr_to_pst
[f_idx
].pst
;
3627 if (pst
== (struct partial_symtab
*) NULL
)
3630 /* This should catch stabs-in-ecoff. */
3634 /* Skip the first file indirect entry as it is a self dependency
3635 for source files or a reverse .h -> .c dependency for header files. */
3636 pst
->number_of_dependencies
= 0;
3638 ((struct partial_symtab
**)
3639 obstack_alloc (&objfile
->objfile_obstack
,
3641 * sizeof (struct partial_symtab
*))));
3642 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3646 (*swap_rfd_in
) (cur_bfd
,
3647 ((char *) debug_info
->external_rfd
3648 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3650 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3652 complaint (&symfile_complaints
, "bad file number %ld", rh
);
3656 /* Skip self dependencies of header files. */
3660 /* Do not add to dependeny list if psymtab was empty. */
3661 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3663 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3667 /* Remove the dummy psymtab created for -O3 images above, if it is
3668 still empty, to enable the detection of stripped executables. */
3669 if (objfile
->psymtabs
->next
== NULL
3670 && objfile
->psymtabs
->number_of_dependencies
== 0
3671 && objfile
->psymtabs
->n_global_syms
== 0
3672 && objfile
->psymtabs
->n_static_syms
== 0)
3673 objfile
->psymtabs
= NULL
;
3674 do_cleanups (old_chain
);
3677 /* If the current psymbol has an enumerated type, we need to add
3678 all the the enum constants to the partial symbol table. */
3681 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3684 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3685 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3686 char *ext_sym
= ((char *) debug_info
->external_sym
3687 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3697 /* It is an enumerated type if the next symbol entry is a stMember
3698 and its auxiliary index is indexNil or its auxiliary entry
3699 is a plain btNil or btVoid.
3700 Alpha cc -migrate enums are recognized by a zero index and
3701 a zero symbol value.
3702 DU 4.0 cc enums are recognized by a member type of btEnum without
3703 qualifiers and a zero symbol value. */
3704 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3705 if (sh
.st
!= stMember
)
3708 if (sh
.index
== indexNil
3709 || (sh
.index
== 0 && svalue
== 0))
3711 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3712 &(debug_info
->external_aux
3713 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3715 if ((tir
.bt
!= btNil
3717 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3718 || tir
.tq0
!= tqNil
)
3730 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3731 if (sh
.st
!= stMember
)
3733 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3735 /* Note that the value doesn't matter for enum constants
3736 in psymtabs, just in symtabs. */
3737 add_psymbol_to_list (name
, strlen (name
),
3738 VAR_DOMAIN
, LOC_CONST
,
3739 &objfile
->static_psymbols
, 0,
3740 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3741 ext_sym
+= external_sym_size
;
3745 /* Get the next symbol. OBJFILE is unused. */
3748 mdebug_next_symbol_text (struct objfile
*objfile
)
3753 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3754 ((char *) debug_info
->external_sym
3755 + ((cur_fdr
->isymBase
+ cur_sdx
)
3756 * debug_swap
->external_sym_size
)),
3758 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3761 /* Ancillary function to psymtab_to_symtab(). Does all the work
3762 for turning the partial symtab PST into a symtab, recurring
3763 first on all dependent psymtabs. The argument FILENAME is
3764 only passed so we can see in debug stack traces what file
3767 This function has a split personality, based on whether the
3768 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3769 The flow of control and even the memory allocation differs. FIXME. */
3772 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3774 bfd_size_type external_sym_size
;
3775 bfd_size_type external_pdr_size
;
3776 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3777 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3779 struct symtab
*st
= NULL
;
3781 struct linetable
*lines
;
3782 CORE_ADDR lowest_pdr_addr
= 0;
3783 int last_symtab_ended
= 0;
3789 /* Read in all partial symbtabs on which this one is dependent.
3790 NOTE that we do have circular dependencies, sigh. We solved
3791 that by setting pst->readin before this point. */
3793 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3794 if (!pst
->dependencies
[i
]->readin
)
3796 /* Inform about additional files to be read in. */
3799 fputs_filtered (" ", gdb_stdout
);
3801 fputs_filtered ("and ", gdb_stdout
);
3803 printf_filtered ("%s...",
3804 pst
->dependencies
[i
]->filename
);
3805 wrap_here (""); /* Flush output */
3806 gdb_flush (gdb_stdout
);
3808 /* We only pass the filename for debug purposes */
3809 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3810 pst
->dependencies
[i
]->filename
);
3813 /* Do nothing if this is a dummy psymtab. */
3815 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3816 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3819 /* Now read the symbols for this symtab */
3821 cur_bfd
= CUR_BFD (pst
);
3822 debug_swap
= DEBUG_SWAP (pst
);
3823 debug_info
= DEBUG_INFO (pst
);
3824 pending_list
= PENDING_LIST (pst
);
3825 external_sym_size
= debug_swap
->external_sym_size
;
3826 external_pdr_size
= debug_swap
->external_pdr_size
;
3827 swap_sym_in
= debug_swap
->swap_sym_in
;
3828 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3829 current_objfile
= pst
->objfile
;
3830 cur_fd
= FDR_IDX (pst
);
3831 fh
= ((cur_fd
== -1)
3833 : debug_info
->fdr
+ cur_fd
);
3836 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3837 processing_gcc_compilation
= 0;
3838 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3842 (*swap_sym_in
) (cur_bfd
,
3843 ((char *) debug_info
->external_sym
3844 + (fh
->isymBase
+ 1) * external_sym_size
),
3846 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3849 /* We indicate that this is a GCC compilation so that certain
3850 features will be enabled in stabsread/dbxread. */
3851 processing_gcc_compilation
= 2;
3855 if (processing_gcc_compilation
!= 0)
3858 /* This symbol table contains stabs-in-ecoff entries. */
3860 /* Parse local symbols first */
3862 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3864 current_objfile
= NULL
;
3867 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3873 (*swap_sym_in
) (cur_bfd
,
3874 (((char *) debug_info
->external_sym
)
3875 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3877 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3879 /* XXX This is a hack. It will go away! */
3880 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3882 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3884 /* We should never get non N_STAB symbols here, but they
3885 should be harmless, so keep process_one_symbol from
3886 complaining about them. */
3887 if (type_code
& N_STAB
)
3889 /* If we found a trailing N_SO with no name, process
3890 it here instead of in process_one_symbol, so we
3891 can keep a handle to its symtab. The symtab
3892 would otherwise be ended twice, once in
3893 process_one_symbol, and once after this loop. */
3894 if (type_code
== N_SO
3896 && previous_stab_code
!= (unsigned char) N_SO
3899 valu
+= ANOFFSET (pst
->section_offsets
,
3900 SECT_OFF_TEXT (pst
->objfile
));
3901 previous_stab_code
= N_SO
;
3902 st
= end_symtab (valu
, pst
->objfile
,
3903 SECT_OFF_TEXT (pst
->objfile
));
3905 last_symtab_ended
= 1;
3909 last_symtab_ended
= 0;
3910 process_one_symbol (type_code
, 0, valu
, name
,
3911 pst
->section_offsets
, pst
->objfile
);
3914 /* Similarly a hack. */
3915 else if (name
[0] == '#')
3917 process_one_symbol (N_SLINE
, 0, valu
, name
,
3918 pst
->section_offsets
, pst
->objfile
);
3920 if (type_code
== N_FUN
)
3922 /* Make up special symbol to contain
3923 procedure specific info */
3924 struct mdebug_extra_func_info
*e
=
3925 ((struct mdebug_extra_func_info
*)
3926 obstack_alloc (¤t_objfile
->objfile_obstack
,
3927 sizeof (struct mdebug_extra_func_info
)));
3928 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
3930 memset (e
, 0, sizeof (struct mdebug_extra_func_info
));
3931 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
3932 SYMBOL_CLASS (s
) = LOC_CONST
;
3933 SYMBOL_TYPE (s
) = mdebug_type_void
;
3934 SYMBOL_VALUE (s
) = (long) e
;
3935 e
->pdr
.framereg
= -1;
3936 add_symbol_to_list (s
, &local_symbols
);
3939 else if (sh
.st
== stLabel
)
3941 if (sh
.index
== indexNil
)
3943 /* This is what the gcc2_compiled and __gnu_compiled_*
3944 show up as. So don't complain. */
3949 /* Handle encoded stab line number. */
3950 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3951 record_line (current_subfile
, sh
.index
, valu
);
3954 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3955 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3956 /* These are generated by gcc-2.x, do not complain */
3959 complaint (&symfile_complaints
, "unknown stabs symbol %s", name
);
3962 if (! last_symtab_ended
)
3964 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3968 /* There used to be a call to sort_blocks here, but this should not
3969 be necessary for stabs symtabs. And as sort_blocks modifies the
3970 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3971 it did the wrong thing if the first procedure in a file was
3972 generated via asm statements. */
3974 /* Fill in procedure info next. */
3978 struct cleanup
*old_chain
;
3984 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3985 old_chain
= make_cleanup (xfree
, pr_block
);
3987 pdr_ptr
= ((char *) debug_info
->external_pdr
3988 + fh
->ipdFirst
* external_pdr_size
);
3989 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3993 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3995 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3997 /* Determine lowest PDR address, the PDRs are not always
3999 if (pdr_in
== pr_block
)
4000 lowest_pdr_addr
= pdr_in
->adr
;
4001 else if (pdr_in
->adr
< lowest_pdr_addr
)
4002 lowest_pdr_addr
= pdr_in
->adr
;
4006 pdr_in_end
= pdr_in
+ fh
->cpd
;
4007 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4008 parse_procedure (pdr_in
, st
, pst
);
4010 do_cleanups (old_chain
);
4015 /* This symbol table contains ordinary ecoff entries. */
4024 st
= new_symtab ("unknown", 0, pst
->objfile
);
4028 maxlines
= 2 * fh
->cline
;
4029 st
= new_symtab (pst
->filename
, maxlines
, pst
->objfile
);
4031 /* The proper language was already determined when building
4032 the psymtab, use it. */
4033 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4036 psymtab_language
= st
->language
;
4038 lines
= LINETABLE (st
);
4040 /* Get a new lexical context */
4042 push_parse_stack ();
4043 top_stack
->cur_st
= st
;
4044 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4046 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4047 BLOCK_END (top_stack
->cur_block
) = 0;
4048 top_stack
->blocktype
= stFile
;
4049 top_stack
->cur_type
= 0;
4050 top_stack
->procadr
= 0;
4051 top_stack
->numargs
= 0;
4052 found_ecoff_debugging_info
= 0;
4059 /* Parse local symbols first */
4060 sym_ptr
= ((char *) debug_info
->external_sym
4061 + fh
->isymBase
* external_sym_size
);
4062 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4063 while (sym_ptr
< sym_end
)
4068 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4069 c
= parse_symbol (&sh
,
4070 debug_info
->external_aux
+ fh
->iauxBase
,
4071 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4072 sym_ptr
+= c
* external_sym_size
;
4075 /* Linenumbers. At the end, check if we can save memory.
4076 parse_lines has to look ahead an arbitrary number of PDR
4077 structures, so we swap them all first. */
4081 struct cleanup
*old_chain
;
4087 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4089 old_chain
= make_cleanup (xfree
, pr_block
);
4091 pdr_ptr
= ((char *) debug_info
->external_pdr
4092 + fh
->ipdFirst
* external_pdr_size
);
4093 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4097 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4099 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4101 /* Determine lowest PDR address, the PDRs are not always
4103 if (pdr_in
== pr_block
)
4104 lowest_pdr_addr
= pdr_in
->adr
;
4105 else if (pdr_in
->adr
< lowest_pdr_addr
)
4106 lowest_pdr_addr
= pdr_in
->adr
;
4109 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4110 if (lines
->nitems
< fh
->cline
)
4111 lines
= shrink_linetable (lines
);
4113 /* Fill in procedure info next. */
4115 pdr_in_end
= pdr_in
+ fh
->cpd
;
4116 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4117 parse_procedure (pdr_in
, 0, pst
);
4119 do_cleanups (old_chain
);
4123 LINETABLE (st
) = lines
;
4125 /* .. and our share of externals.
4126 XXX use the global list to speed up things here. how?
4127 FIXME, Maybe quit once we have found the right number of ext's? */
4128 top_stack
->cur_st
= st
;
4129 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4131 top_stack
->blocktype
= stFile
;
4133 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4134 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4135 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4137 /* If there are undefined symbols, tell the user.
4138 The alpha has an undefined symbol for every symbol that is
4139 from a shared library, so tell the user only if verbose is on. */
4140 if (info_verbose
&& n_undef_symbols
)
4142 printf_filtered ("File %s contains %d unresolved references:",
4143 st
->filename
, n_undef_symbols
);
4144 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4145 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4146 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4156 /* Now link the psymtab and the symtab. */
4159 current_objfile
= NULL
;
4162 /* Ancillary parsing procedures. */
4164 /* Return 1 if the symbol pointed to by SH has a cross reference
4165 to an opaque aggregate type, else 0. */
4168 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4175 if (sh
->index
== indexNil
)
4178 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4179 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4180 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4184 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4185 if (rn
->rfd
== 0xfff)
4186 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4194 /* Lookup the type at relative index RN. Return it in TPP
4195 if found and in any event come up with its name PNAME.
4196 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4197 Return value says how many aux symbols we ate. */
4200 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. */
4201 char **pname
, int bigend
, char *sym_name
)
4210 struct mdebug_pending
*pend
;
4212 *tpp
= (struct type
*) NULL
;
4214 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4216 /* Escape index means 'the next one' */
4217 if (rn
->rfd
== 0xfff)
4220 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4227 /* mips cc uses a rf of -1 for opaque struct definitions.
4228 Set TYPE_FLAG_STUB for these types so that check_typedef will
4229 resolve them if the struct gets defined in another compilation unit. */
4232 *pname
= "<undefined>";
4233 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4237 /* mips cc uses an escaped rn->index of 0 for struct return types
4238 of procedures that were compiled without -g. These will always remain
4240 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4242 *pname
= "<undefined>";
4246 /* Find the relative file descriptor and the symbol in it. */
4247 fh
= get_rfd (fd
, rf
);
4248 xref_fd
= fh
- debug_info
->fdr
;
4250 if (rn
->index
>= fh
->csym
)
4252 /* File indirect entry is corrupt. */
4253 *pname
= "<illegal>";
4254 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4258 /* If we have processed this symbol then we left a forwarding
4259 pointer to the type in the pending list. If not, we`ll put
4260 it in a list of pending types, to be processed later when
4261 the file will be. In any event, we collect the name for the
4264 esh
= ((char *) debug_info
->external_sym
4265 + ((fh
->isymBase
+ rn
->index
)
4266 * debug_swap
->external_sym_size
));
4267 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4269 /* Make sure that this type of cross reference can be handled. */
4270 if ((sh
.sc
!= scInfo
4271 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4272 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4273 && sh
.st
!= stEnum
))
4274 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4276 /* File indirect entry is corrupt. */
4277 *pname
= "<illegal>";
4278 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4282 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4284 pend
= is_pending_symbol (fh
, esh
);
4289 /* We have not yet seen this type. */
4291 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4295 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4297 a) forward declarations of structs/unions/enums which are not
4298 defined in this compilation unit.
4299 For these the type will be void. This is a bad design decision
4300 as cross referencing across compilation units is impossible
4301 due to the missing name.
4302 b) forward declarations of structs/unions/enums/typedefs which
4303 are defined later in this file or in another file in the same
4304 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4305 Simply cross reference those again to get the true type.
4306 The forward references are not entered in the pending list and
4307 in the symbol table. */
4309 (*debug_swap
->swap_tir_in
) (bigend
,
4310 &(debug_info
->external_aux
4311 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4313 if (tir
.tq0
!= tqNil
)
4314 complaint (&symfile_complaints
,
4315 "illegal tq0 in forward typedef for %s", sym_name
);
4319 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4321 *pname
= "<undefined>";
4328 (debug_info
->external_aux
4329 + fh
->iauxBase
+ sh
.index
+ 1),
4330 tpp
, type_code
, pname
,
4331 fh
->fBigendian
, sym_name
);
4335 /* Follow a forward typedef. This might recursively
4336 call cross_ref till we get a non typedef'ed type.
4337 FIXME: This is not correct behaviour, but gdb currently
4338 cannot handle typedefs without type copying. Type
4339 copying is impossible as we might have mutual forward
4340 references between two files and the copied type would not
4341 get filled in when we later parse its definition. */
4342 *tpp
= parse_type (xref_fd
,
4343 debug_info
->external_aux
+ fh
->iauxBase
,
4347 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4348 add_pending (fh
, esh
, *tpp
);
4352 complaint (&symfile_complaints
,
4353 "illegal bt %d in forward typedef for %s", tir
.bt
,
4355 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4361 else if (sh
.st
== stTypedef
)
4363 /* Parse the type for a normal typedef. This might recursively call
4364 cross_ref till we get a non typedef'ed type.
4365 FIXME: This is not correct behaviour, but gdb currently
4366 cannot handle typedefs without type copying. But type copying is
4367 impossible as we might have mutual forward references between
4368 two files and the copied type would not get filled in when
4369 we later parse its definition. */
4370 *tpp
= parse_type (xref_fd
,
4371 debug_info
->external_aux
+ fh
->iauxBase
,
4375 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4379 /* Cross reference to a struct/union/enum which is defined
4380 in another file in the same compilation unit but that file
4381 has not been parsed yet.
4382 Initialize the type only, it will be filled in when
4383 it's definition is parsed. */
4384 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4386 add_pending (fh
, esh
, *tpp
);
4389 /* We used one auxent normally, two if we got a "next one" rf. */
4394 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4395 keeping the symtab sorted */
4397 static struct symbol
*
4398 mylookup_symbol (char *name
, struct block
*block
,
4399 domain_enum domain
, enum address_class
class)
4401 struct dict_iterator iter
;
4406 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4408 if (DEPRECATED_SYMBOL_NAME (sym
)[0] == inc
4409 && SYMBOL_DOMAIN (sym
) == domain
4410 && SYMBOL_CLASS (sym
) == class
4411 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), name
) == 0)
4415 block
= BLOCK_SUPERBLOCK (block
);
4417 return mylookup_symbol (name
, block
, domain
, class);
4422 /* Add a new symbol S to a block B. */
4425 add_symbol (struct symbol
*s
, struct block
*b
)
4427 dict_add_symbol (BLOCK_DICT (b
), s
);
4430 /* Add a new block B to a symtab S */
4433 add_block (struct block
*b
, struct symtab
*s
)
4435 struct blockvector
*bv
= BLOCKVECTOR (s
);
4437 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4438 (sizeof (struct blockvector
)
4439 + BLOCKVECTOR_NBLOCKS (bv
)
4440 * sizeof (bv
->block
)));
4441 if (bv
!= BLOCKVECTOR (s
))
4442 BLOCKVECTOR (s
) = bv
;
4444 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4447 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4448 MIPS' linenumber encoding might need more than one byte
4449 to describe it, LAST is used to detect these continuation lines.
4451 Combining lines with the same line number seems like a bad idea.
4452 E.g: There could be a line number entry with the same line number after the
4453 prologue and GDB should not ignore it (this is a better way to find
4454 a prologue than mips_skip_prologue).
4455 But due to the compressed line table format there are line number entries
4456 for the same line which are needed to bridge the gap to the next
4457 line number entry. These entries have a bogus address info with them
4458 and we are unable to tell them from intended duplicate line number
4460 This is another reason why -ggdb debugging format is preferable. */
4463 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4465 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4466 Change them to something sensible. */
4470 last
= -2; /* make sure we record first line */
4472 if (last
== lineno
) /* skip continuation lines */
4475 lt
->item
[lt
->nitems
].line
= lineno
;
4476 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4480 /* Sorting and reordering procedures */
4482 /* Blocks with a smaller low bound should come first */
4485 compare_blocks (const void *arg1
, const void *arg2
)
4488 struct block
**b1
= (struct block
**) arg1
;
4489 struct block
**b2
= (struct block
**) arg2
;
4491 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4493 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4497 /* Sort the blocks of a symtab S.
4498 Reorder the blocks in the blockvector by code-address,
4499 as required by some MI search routines */
4502 sort_blocks (struct symtab
*s
)
4504 struct blockvector
*bv
= BLOCKVECTOR (s
);
4506 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4509 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4510 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4511 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4512 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4516 * This is very unfortunate: normally all functions are compiled in
4517 * the order they are found, but if the file is compiled -O3 things
4518 * are very different. It would be nice to find a reliable test
4519 * to detect -O3 images in advance.
4521 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4522 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4523 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4524 sizeof (struct block
*),
4529 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4531 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4532 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4533 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4534 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4537 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4538 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4540 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4541 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4542 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4543 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4547 /* Constructor/restructor/destructor procedures */
4549 /* Allocate a new symtab for NAME. Needs an estimate of how many
4550 linenumbers MAXLINES we'll put in it */
4552 static struct symtab
*
4553 new_symtab (char *name
, int maxlines
, struct objfile
*objfile
)
4555 struct symtab
*s
= allocate_symtab (name
, objfile
);
4557 LINETABLE (s
) = new_linetable (maxlines
);
4559 /* All symtabs must have at least two blocks */
4560 BLOCKVECTOR (s
) = new_bvect (2);
4561 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
)
4562 = new_block (NON_FUNCTION_BLOCK
);
4563 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
4564 = new_block (NON_FUNCTION_BLOCK
);
4565 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4566 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4568 s
->free_code
= free_linetable
;
4569 s
->debugformat
= obsavestring ("ECOFF", 5,
4570 &objfile
->objfile_obstack
);
4574 /* Allocate a new partial_symtab NAME */
4576 static struct partial_symtab
*
4577 new_psymtab (char *name
, struct objfile
*objfile
)
4579 struct partial_symtab
*psymtab
;
4581 psymtab
= allocate_psymtab (name
, objfile
);
4582 psymtab
->section_offsets
= objfile
->section_offsets
;
4584 /* Keep a backpointer to the file's symbols */
4586 psymtab
->read_symtab_private
= ((char *)
4587 obstack_alloc (&objfile
->objfile_obstack
,
4588 sizeof (struct symloc
)));
4589 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4590 CUR_BFD (psymtab
) = cur_bfd
;
4591 DEBUG_SWAP (psymtab
) = debug_swap
;
4592 DEBUG_INFO (psymtab
) = debug_info
;
4593 PENDING_LIST (psymtab
) = pending_list
;
4595 /* The way to turn this into a symtab is to call... */
4596 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4601 /* Allocate a linetable array of the given SIZE. Since the struct
4602 already includes one item, we subtract one when calculating the
4603 proper size to allocate. */
4605 static struct linetable
*
4606 new_linetable (int size
)
4608 struct linetable
*l
;
4610 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4611 l
= (struct linetable
*) xmalloc (size
);
4616 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4617 I am not so sure about the 3.4 ones.
4619 Since the struct linetable already includes one item, we subtract one when
4620 calculating the proper size to allocate. */
4622 static struct linetable
*
4623 shrink_linetable (struct linetable
*lt
)
4626 return (struct linetable
*) xrealloc ((void *) lt
,
4627 (sizeof (struct linetable
)
4629 * sizeof (lt
->item
))));
4632 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4634 static struct blockvector
*
4635 new_bvect (int nblocks
)
4637 struct blockvector
*bv
;
4640 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4641 bv
= (struct blockvector
*) xzalloc (size
);
4643 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4648 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4649 is non-zero, assume the block is associated to a function, and make
4650 sure that the symbols are stored linearly; otherwise, store them
4653 static struct block
*
4654 new_block (enum block_type type
)
4656 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4657 allocate the block. Which, in turn, suggests that the block
4658 should be allocated on an obstack. */
4659 struct block
*retval
= xzalloc (sizeof (struct block
));
4661 if (type
== FUNCTION_BLOCK
)
4662 BLOCK_DICT (retval
) = dict_create_linear_expandable ();
4664 BLOCK_DICT (retval
) = dict_create_hashed_expandable ();
4669 /* Create a new symbol with printname NAME */
4671 static struct symbol
*
4672 new_symbol (char *name
)
4674 struct symbol
*s
= ((struct symbol
*)
4675 obstack_alloc (¤t_objfile
->objfile_obstack
,
4676 sizeof (struct symbol
)));
4678 memset (s
, 0, sizeof (*s
));
4679 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4680 SYMBOL_SET_NAMES (s
, name
, strlen (name
), current_objfile
);
4684 /* Create a new type with printname NAME */
4686 static struct type
*
4687 new_type (char *name
)
4691 t
= alloc_type (current_objfile
);
4692 TYPE_NAME (t
) = name
;
4693 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4697 /* Read ECOFF debugging information from a BFD section. This is
4698 called from elfread.c. It parses the section into a
4699 ecoff_debug_info struct, and then lets the rest of the file handle
4703 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4704 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4706 bfd
*abfd
= objfile
->obfd
;
4707 struct ecoff_debug_info
*info
;
4708 struct cleanup
*back_to
;
4710 /* FIXME: It's not clear whether we should be getting minimal symbol
4711 information from .mdebug in an ELF file, or whether we will.
4712 Re-initialize the minimal symbol reader in case we do. */
4714 init_minimal_symbol_collection ();
4715 back_to
= make_cleanup_discard_minimal_symbols ();
4717 info
= ((struct ecoff_debug_info
*)
4718 obstack_alloc (&objfile
->objfile_obstack
,
4719 sizeof (struct ecoff_debug_info
)));
4721 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4722 error ("Error reading ECOFF debugging information: %s",
4723 bfd_errmsg (bfd_get_error ()));
4725 mdebug_build_psymtabs (objfile
, swap
, info
);
4727 install_minimal_symbols (objfile
);
4728 do_cleanups (back_to
);
4732 _initialize_mdebugread (void)
4735 init_type (TYPE_CODE_VOID
, 1,
4737 "void", (struct objfile
*) NULL
);
4739 init_type (TYPE_CODE_INT
, 1,
4741 "char", (struct objfile
*) NULL
);
4742 mdebug_type_unsigned_char
=
4743 init_type (TYPE_CODE_INT
, 1,
4745 "unsigned char", (struct objfile
*) NULL
);
4747 init_type (TYPE_CODE_INT
, 2,
4749 "short", (struct objfile
*) NULL
);
4750 mdebug_type_unsigned_short
=
4751 init_type (TYPE_CODE_INT
, 2,
4753 "unsigned short", (struct objfile
*) NULL
);
4754 mdebug_type_int_32
=
4755 init_type (TYPE_CODE_INT
, 4,
4757 "int", (struct objfile
*) NULL
);
4758 mdebug_type_unsigned_int_32
=
4759 init_type (TYPE_CODE_INT
, 4,
4761 "unsigned int", (struct objfile
*) NULL
);
4762 mdebug_type_int_64
=
4763 init_type (TYPE_CODE_INT
, 8,
4765 "int", (struct objfile
*) NULL
);
4766 mdebug_type_unsigned_int_64
=
4767 init_type (TYPE_CODE_INT
, 8,
4769 "unsigned int", (struct objfile
*) NULL
);
4770 mdebug_type_long_32
=
4771 init_type (TYPE_CODE_INT
, 4,
4773 "long", (struct objfile
*) NULL
);
4774 mdebug_type_unsigned_long_32
=
4775 init_type (TYPE_CODE_INT
, 4,
4777 "unsigned long", (struct objfile
*) NULL
);
4778 mdebug_type_long_64
=
4779 init_type (TYPE_CODE_INT
, 8,
4781 "long", (struct objfile
*) NULL
);
4782 mdebug_type_unsigned_long_64
=
4783 init_type (TYPE_CODE_INT
, 8,
4785 "unsigned long", (struct objfile
*) NULL
);
4786 mdebug_type_long_long_64
=
4787 init_type (TYPE_CODE_INT
, 8,
4789 "long long", (struct objfile
*) NULL
);
4790 mdebug_type_unsigned_long_long_64
=
4791 init_type (TYPE_CODE_INT
, 8,
4793 "unsigned long long", (struct objfile
*) NULL
);
4794 mdebug_type_adr_32
=
4795 init_type (TYPE_CODE_PTR
, 4,
4797 "adr_32", (struct objfile
*) NULL
);
4798 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4799 mdebug_type_adr_64
=
4800 init_type (TYPE_CODE_PTR
, 8,
4802 "adr_64", (struct objfile
*) NULL
);
4803 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4805 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4807 "float", (struct objfile
*) NULL
);
4808 mdebug_type_double
=
4809 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4811 "double", (struct objfile
*) NULL
);
4812 mdebug_type_complex
=
4813 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4815 "complex", (struct objfile
*) NULL
);
4816 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4817 mdebug_type_double_complex
=
4818 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4820 "double complex", (struct objfile
*) NULL
);
4821 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4823 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4825 mdebug_type_string
=
4826 init_type (TYPE_CODE_STRING
,
4827 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4829 (struct objfile
*) NULL
);
4831 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4832 good? Would we be better off with TYPE_CODE_ERROR? Should
4833 TYPE_CODE_ERROR print things in hex if it knows the size? */
4834 mdebug_type_fixed_dec
=
4835 init_type (TYPE_CODE_INT
,
4836 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4838 (struct objfile
*) NULL
);
4840 mdebug_type_float_dec
=
4841 init_type (TYPE_CODE_ERROR
,
4842 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4843 0, "floating decimal",
4844 (struct objfile
*) NULL
);
4846 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4847 "<function, no debug info>", NULL
);
4848 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4849 nodebug_var_symbol_type
=
4850 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4851 "<variable, no debug info>", NULL
);