1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
50 #include "gdb_obstack.h"
52 #include "stabsread.h"
53 #include "complaints.h"
55 #include "gdb_assert.h"
57 /* These are needed if the tm.h file does not contain the necessary
58 mips specific definitions. */
60 #ifndef MIPS_EFI_SYMBOL_NAME
61 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
62 extern void ecoff_relocate_efi (struct symbol
*, CORE_ADDR
);
64 #include "coff/symconst.h"
65 typedef struct mips_extra_func_info
70 *mips_extra_func_info_t
;
77 #include <sys/types.h>
81 #include "gdb_string.h"
85 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
87 #include "libaout.h" /* Private BFD a.out information. */
88 #include "aout/aout64.h"
89 #include "aout/stab_gnu.h" /* STABS information */
91 #include "expression.h"
92 #include "language.h" /* For local_hex_string() */
94 extern void _initialize_mdebugread (void);
96 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
97 We use this define in order to know whether we should override a
98 symbol's ECOFF section with its ELF section. This is necessary in
99 case the symbol's ELF section could not be represented in ECOFF. */
100 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
101 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
104 /* We put a pointer to this structure in the read_symtab_private field
109 /* Index of the FDR that this psymtab represents. */
111 /* The BFD that the psymtab was created from. */
113 const struct ecoff_debug_swap
*debug_swap
;
114 struct ecoff_debug_info
*debug_info
;
115 struct mdebug_pending
**pending_list
;
116 /* Pointer to external symbols for this file. */
118 /* Size of extern_tab. */
120 enum language pst_language
;
123 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
124 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
125 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
126 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
127 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
128 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
130 #define SC_IS_TEXT(sc) ((sc) == scText \
131 || (sc) == scRConst \
134 #define SC_IS_DATA(sc) ((sc) == scData \
139 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
140 #define SC_IS_BSS(sc) ((sc) == scBss)
141 #define SC_IS_SBSS(sc) ((sc) == scSBss)
142 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
144 /* Various complaints about symbol reading that don't abort the process */
146 index_complaint (const char *arg1
)
148 complaint (&symfile_complaints
, "bad aux index at symbol %s", arg1
);
152 unknown_ext_complaint (const char *arg1
)
154 complaint (&symfile_complaints
, "unknown external symbol %s", arg1
);
158 basic_type_complaint (int arg1
, const char *arg2
)
160 complaint (&symfile_complaints
, "cannot map ECOFF basic type 0x%x for %s",
165 bad_tag_guess_complaint (const char *arg1
)
167 complaint (&symfile_complaints
, "guessed tag type of %s incorrectly", arg1
);
171 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
173 complaint (&symfile_complaints
, "bad rfd entry for %s: file %d, index %d",
178 unexpected_type_code_complaint (const char *arg1
)
180 complaint (&symfile_complaints
, "unexpected type code for %s", arg1
);
183 /* Macros and extra defs */
185 /* Puns: hard to find whether -g was used and how */
187 #define MIN_GLEVEL GLEVEL_0
188 #define compare_glevel(a,b) \
189 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
190 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
192 /* Things that really are local to this module */
194 /* Remember what we deduced to be the source language of this psymtab. */
196 static enum language psymtab_language
= language_unknown
;
202 /* How to parse debugging information for CUR_BFD. */
204 static const struct ecoff_debug_swap
*debug_swap
;
206 /* Pointers to debugging information for CUR_BFD. */
208 static struct ecoff_debug_info
*debug_info
;
210 /* Pointer to current file decriptor record, and its index */
215 /* Index of current symbol */
219 /* Note how much "debuggable" this image is. We would like
220 to see at least one FDR with full symbols */
222 static int max_gdbinfo
;
223 static int max_glevel
;
225 /* When examining .o files, report on undefined symbols */
227 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
229 /* Pseudo symbol to use when putting stabs into the symbol table. */
231 static char stabs_symbol
[] = STABS_SYMBOL
;
233 /* Types corresponding to mdebug format bt* basic types. */
235 static struct type
*mdebug_type_void
;
236 static struct type
*mdebug_type_char
;
237 static struct type
*mdebug_type_short
;
238 static struct type
*mdebug_type_int_32
;
239 #define mdebug_type_int mdebug_type_int_32
240 static struct type
*mdebug_type_int_64
;
241 static struct type
*mdebug_type_long_32
;
242 static struct type
*mdebug_type_long_64
;
243 static struct type
*mdebug_type_long_long_64
;
244 static struct type
*mdebug_type_unsigned_char
;
245 static struct type
*mdebug_type_unsigned_short
;
246 static struct type
*mdebug_type_unsigned_int_32
;
247 static struct type
*mdebug_type_unsigned_int_64
;
248 static struct type
*mdebug_type_unsigned_long_32
;
249 static struct type
*mdebug_type_unsigned_long_64
;
250 static struct type
*mdebug_type_unsigned_long_long_64
;
251 static struct type
*mdebug_type_adr_32
;
252 static struct type
*mdebug_type_adr_64
;
253 static struct type
*mdebug_type_float
;
254 static struct type
*mdebug_type_double
;
255 static struct type
*mdebug_type_complex
;
256 static struct type
*mdebug_type_double_complex
;
257 static struct type
*mdebug_type_fixed_dec
;
258 static struct type
*mdebug_type_float_dec
;
259 static struct type
*mdebug_type_string
;
261 /* Types for symbols from files compiled without debugging info. */
263 static struct type
*nodebug_func_symbol_type
;
264 static struct type
*nodebug_var_symbol_type
;
266 /* Nonzero if we have seen ecoff debugging info for a file. */
268 static int found_ecoff_debugging_info
;
270 /* Forward declarations */
272 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
275 static void parse_partial_symbols (struct objfile
*);
277 static int has_opaque_xref (FDR
*, SYMR
*);
279 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
280 char **, int, char *);
282 static struct symbol
*new_symbol (char *);
284 static struct type
*new_type (char *);
286 static struct block
*new_block (int);
288 static struct symtab
*new_symtab (char *, int, int, struct objfile
*);
290 static struct linetable
*new_linetable (int);
292 static struct blockvector
*new_bvect (int);
294 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
297 static struct symbol
*mylookup_symbol (char *, struct block
*, namespace_enum
,
300 static struct block
*shrink_block (struct block
*, struct symtab
*);
302 static void sort_blocks (struct symtab
*);
304 static struct partial_symtab
*new_psymtab (char *, struct objfile
*);
306 static void psymtab_to_symtab_1 (struct partial_symtab
*, char *);
308 static void add_block (struct block
*, struct symtab
*);
310 static void add_symbol (struct symbol
*, struct block
*);
312 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
314 static struct linetable
*shrink_linetable (struct linetable
*);
316 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
319 static char *mdebug_next_symbol_text (struct objfile
*);
321 /* Address bounds for the signal trampoline in inferior, if any */
323 CORE_ADDR sigtramp_address
, sigtramp_end
;
325 /* Allocate zeroed memory */
328 xzalloc (unsigned int size
)
330 void *p
= xmalloc (size
);
336 /* Exported procedure: Builds a symtab from the PST partial one.
337 Restores the environment in effect when PST was created, delegates
338 most of the work to an ancillary procedure, and sorts
339 and reorders the symtab list at the end */
342 mdebug_psymtab_to_symtab (struct partial_symtab
*pst
)
350 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
351 gdb_flush (gdb_stdout
);
354 next_symbol_text_func
= mdebug_next_symbol_text
;
356 psymtab_to_symtab_1 (pst
, pst
->filename
);
358 /* Match with global symbols. This only needs to be done once,
359 after all of the symtabs and dependencies have been read in. */
360 scan_file_globals (pst
->objfile
);
363 printf_filtered ("done.\n");
366 /* File-level interface functions */
368 /* Find a file descriptor given its index RF relative to a file CF */
371 get_rfd (int cf
, int rf
)
377 fdrs
= debug_info
->fdr
;
379 /* Object files do not have the RFD table, all refs are absolute */
382 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
383 ((char *) debug_info
->external_rfd
385 * debug_swap
->external_rfd_size
)),
390 /* Return a safer print NAME for a file descriptor */
396 return "<stripped file>";
399 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
403 /* Read in and parse the symtab of the file OBJFILE. Symbols from
404 different sections are relocated via the SECTION_OFFSETS. */
407 mdebug_build_psymtabs (struct objfile
*objfile
,
408 const struct ecoff_debug_swap
*swap
,
409 struct ecoff_debug_info
*info
)
411 cur_bfd
= objfile
->obfd
;
415 stabsread_new_init ();
416 buildsym_new_init ();
417 free_header_files ();
418 init_header_files ();
420 /* Make sure all the FDR information is swapped in. */
421 if (info
->fdr
== (FDR
*) NULL
)
427 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
428 (info
->symbolic_header
.ifdMax
430 fdr_src
= info
->external_fdr
;
432 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
434 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
435 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
438 parse_partial_symbols (objfile
);
441 /* Check to make sure file was compiled with -g. If not, warn the
442 user of this limitation. */
443 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
445 if (max_gdbinfo
== 0)
446 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
448 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
449 gdb_flush (gdb_stdout
);
454 /* Local utilities */
456 /* Map of FDR indexes to partial symtabs */
460 struct partial_symtab
*pst
; /* the psymtab proper */
461 long n_globals
; /* exported globals (external symbols) */
462 long globals_offset
; /* cumulative */
466 /* Utility stack, used to nest procedures and blocks properly.
467 It is a doubly linked list, to avoid too many alloc/free.
468 Since we might need it quite a few times it is NOT deallocated
471 static struct parse_stack
473 struct parse_stack
*next
, *prev
;
474 struct symtab
*cur_st
; /* Current symtab. */
475 struct block
*cur_block
; /* Block in it. */
477 /* What are we parsing. stFile, or stBlock are for files and
478 blocks. stProc or stStaticProc means we have seen the start of a
479 procedure, but not the start of the block within in. When we see
480 the start of that block, we change it to stNil, without pushing a
481 new block, i.e. stNil means both a procedure and a block. */
485 int maxsyms
; /* Max symbols in this block. */
486 struct type
*cur_type
; /* Type we parse fields for. */
487 int cur_field
; /* Field number in cur_type. */
488 CORE_ADDR procadr
; /* Start addres of this procedure */
489 int numargs
; /* Its argument count */
492 *top_stack
; /* Top stack ptr */
495 /* Enter a new lexical context */
498 push_parse_stack (void)
500 struct parse_stack
*new;
502 /* Reuse frames if possible */
503 if (top_stack
&& top_stack
->prev
)
504 new = top_stack
->prev
;
506 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
507 /* Initialize new frame with previous content */
510 register struct parse_stack
*prev
= new->prev
;
513 top_stack
->prev
= new;
515 new->next
= top_stack
;
520 /* Exit a lexical context */
523 pop_parse_stack (void)
528 top_stack
= top_stack
->next
;
532 /* Cross-references might be to things we haven't looked at
533 yet, e.g. type references. To avoid too many type
534 duplications we keep a quick fixup table, an array
535 of lists of references indexed by file descriptor */
537 struct mdebug_pending
539 struct mdebug_pending
*next
; /* link */
540 char *s
; /* the unswapped symbol */
541 struct type
*t
; /* its partial type descriptor */
545 /* The pending information is kept for an entire object file, and used
546 to be in the sym_private field. I took it out when I split
547 mdebugread from mipsread, because this might not be the only type
548 of symbols read from an object file. Instead, we allocate the
549 pending information table when we create the partial symbols, and
550 we store a pointer to the single table in each psymtab. */
552 static struct mdebug_pending
**pending_list
;
554 /* Check whether we already saw symbol SH in file FH */
556 static struct mdebug_pending
*
557 is_pending_symbol (FDR
*fh
, char *sh
)
559 int f_idx
= fh
- debug_info
->fdr
;
560 register struct mdebug_pending
*p
;
562 /* Linear search is ok, list is typically no more than 10 deep */
563 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
569 /* Add a new symbol SH of type T */
572 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
574 int f_idx
= fh
- debug_info
->fdr
;
575 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
577 /* Make sure we do not make duplicates */
580 p
= ((struct mdebug_pending
*)
581 obstack_alloc (¤t_objfile
->psymbol_obstack
,
582 sizeof (struct mdebug_pending
)));
585 p
->next
= pending_list
[f_idx
];
586 pending_list
[f_idx
] = p
;
591 /* Parsing Routines proper. */
593 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
594 For blocks, procedures and types we open a new lexical context.
595 This is basically just a big switch on the symbol's type. Argument
596 AX is the base pointer of aux symbols for this file (fh->iauxBase).
597 EXT_SH points to the unswapped symbol, which is needed for struct,
598 union, etc., types; it is NULL for an EXTR. BIGEND says whether
599 aux symbols are big-endian or little-endian. Return count of
600 SYMR's handled (normally one). */
603 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
604 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
606 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
607 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
611 struct mdebug_pending
*pend
;
615 enum address_class
class;
617 long svalue
= sh
->value
;
620 if (ext_sh
== (char *) NULL
)
621 name
= debug_info
->ssext
+ sh
->iss
;
623 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
629 /* Do not relocate relative values.
630 The value of a stEnd symbol is the displacement from the
631 corresponding start symbol value.
632 The value of a stBlock symbol is the displacement from the
633 procedure address. */
634 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
635 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
642 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
646 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
655 case stGlobal
: /* external symbol, goes into global block */
657 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
659 s
= new_symbol (name
);
660 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
663 case stStatic
: /* static data, goes into current block. */
665 b
= top_stack
->cur_block
;
666 s
= new_symbol (name
);
667 if (SC_IS_COMMON (sh
->sc
))
669 /* It is a FORTRAN common block. At least for SGI Fortran the
670 address is not in the symbol; we need to fix it later in
671 scan_file_globals. */
672 int bucket
= hashname (SYMBOL_NAME (s
));
673 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
674 global_sym_chain
[bucket
] = s
;
677 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
680 case stLocal
: /* local variable, goes into current block */
681 if (sh
->sc
== scRegister
)
683 class = LOC_REGISTER
;
684 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
688 b
= top_stack
->cur_block
;
689 s
= new_symbol (name
);
690 SYMBOL_VALUE (s
) = svalue
;
692 data
: /* Common code for symbols describing data */
693 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
694 SYMBOL_CLASS (s
) = class;
697 /* Type could be missing if file is compiled without debugging info. */
698 if (SC_IS_UNDEF (sh
->sc
)
699 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
700 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
702 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
703 /* Value of a data symbol is its memory address */
706 case stParam
: /* arg to procedure, goes into current block */
708 found_ecoff_debugging_info
= 1;
709 top_stack
->numargs
++;
711 /* Special GNU C++ name. */
712 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
713 name
= "this"; /* FIXME, not alloc'd in obstack */
714 s
= new_symbol (name
);
716 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
720 /* Pass by value in register. */
721 SYMBOL_CLASS (s
) = LOC_REGPARM
;
722 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
725 /* Pass by reference on stack. */
726 SYMBOL_CLASS (s
) = LOC_REF_ARG
;
729 /* Pass by reference in register. */
730 SYMBOL_CLASS (s
) = LOC_REGPARM_ADDR
;
731 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
734 /* Pass by value on stack. */
735 SYMBOL_CLASS (s
) = LOC_ARG
;
738 SYMBOL_VALUE (s
) = svalue
;
739 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
740 add_symbol (s
, top_stack
->cur_block
);
743 case stLabel
: /* label, goes into current block */
744 s
= new_symbol (name
);
745 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
746 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
747 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
748 SYMBOL_TYPE (s
) = mdebug_type_int
;
749 add_symbol (s
, top_stack
->cur_block
);
752 case stProc
: /* Procedure, usually goes into global block */
753 case stStaticProc
: /* Static procedure, goes into current block */
754 /* For stProc symbol records, we need to check the storage class
755 as well, as only (stProc, scText) entries represent "real"
756 procedures - See the Compaq document titled "Object File /
757 Symbol Table Format Specification" for more information.
758 If the storage class is not scText, we discard the whole block
759 of symbol records for this stProc. */
760 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
762 char *ext_tsym
= ext_sh
;
763 int keep_counting
= 1;
766 while (keep_counting
)
768 ext_tsym
+= external_sym_size
;
769 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
779 complaint (&symfile_complaints
,
780 "unknown symbol type 0x%x", sh
->st
);
786 s
= new_symbol (name
);
787 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
788 SYMBOL_CLASS (s
) = LOC_BLOCK
;
789 /* Type of the return value */
790 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
794 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
795 if (STREQ (name
, "malloc") && TYPE_CODE (t
) == TYPE_CODE_VOID
)
797 /* I don't know why, but, at least under Alpha GNU/Linux,
798 when linking against a malloc without debugging
799 symbols, its read as a function returning void---this
800 is bad because it means we cannot call functions with
801 string arguments interactively; i.e., "call
802 printf("howdy\n")" would fail with the error message
803 "program has no memory available". To avoid this, we
804 patch up the type and make it void*
805 instead. (davidm@azstarnet.com)
807 t
= make_pointer_type (t
, NULL
);
810 b
= top_stack
->cur_block
;
811 if (sh
->st
== stProc
)
813 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
814 /* The next test should normally be true, but provides a
815 hook for nested functions (which we don't want to make
817 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
818 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
819 /* Irix 5 sometimes has duplicate names for the same
820 function. We want to add such names up at the global
821 level, not as a nested function. */
822 else if (sh
->value
== top_stack
->procadr
)
823 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
827 /* Make a type for the procedure itself */
828 SYMBOL_TYPE (s
) = lookup_function_type (t
);
830 /* All functions in C++ have prototypes. For C we don't have enough
831 information in the debug info. */
832 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
833 TYPE_FLAGS (SYMBOL_TYPE (s
)) |= TYPE_FLAG_PROTOTYPED
;
835 /* Create and enter a new lexical context */
836 b
= new_block (top_stack
->maxsyms
);
837 SYMBOL_BLOCK_VALUE (s
) = b
;
838 BLOCK_FUNCTION (b
) = s
;
839 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
840 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
841 add_block (b
, top_stack
->cur_st
);
843 /* Not if we only have partial info */
844 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
848 top_stack
->cur_block
= b
;
849 top_stack
->blocktype
= sh
->st
;
850 top_stack
->cur_type
= SYMBOL_TYPE (s
);
851 top_stack
->cur_field
= -1;
852 top_stack
->procadr
= sh
->value
;
853 top_stack
->numargs
= 0;
856 /* Beginning of code for structure, union, and enum definitions.
857 They all share a common set of local variables, defined here. */
859 enum type_code type_code
;
865 case stStruct
: /* Start a block defining a struct type */
866 type_code
= TYPE_CODE_STRUCT
;
867 goto structured_common
;
869 case stUnion
: /* Start a block defining a union type */
870 type_code
= TYPE_CODE_UNION
;
871 goto structured_common
;
873 case stEnum
: /* Start a block defining an enum type */
874 type_code
= TYPE_CODE_ENUM
;
875 goto structured_common
;
877 case stBlock
: /* Either a lexical block, or some type */
878 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
879 goto case_stBlock_code
; /* Lexical block */
881 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
883 /* Common code for handling struct, union, enum, and/or as-yet-
884 unknown-type blocks of info about structured data. `type_code'
885 has been set to the proper TYPE_CODE, if we know it. */
887 found_ecoff_debugging_info
= 1;
889 top_stack
->blocktype
= stBlock
;
891 /* First count the number of fields and the highest value. */
894 for (ext_tsym
= ext_sh
+ external_sym_size
;
896 ext_tsym
+= external_sym_size
)
900 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
905 /* C++ encodes class types as structures where there the
906 methods are encoded as stProc. The scope of stProc
907 symbols also ends with stEnd, thus creating a risk of
908 taking the wrong stEnd symbol record as the end of
909 the current struct, which would cause GDB to undercount
910 the real number of fields in this struct. To make sure
911 we really reached the right stEnd symbol record, we
912 check the associated name, and match it against the
913 struct name. Since method names are mangled while
914 the class name is not, there is no risk of having a
915 method whose name is identical to the class name
916 (in particular constructor method names are different
917 from the class name). There is therefore no risk that
918 this check stops the count on the StEnd of a method. */
919 if (strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
925 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
927 /* If the type of the member is Nil (or Void),
928 without qualifiers, assume the tag is an
930 Alpha cc -migrate enums are recognized by a zero
931 index and a zero symbol value.
932 DU 4.0 cc enums are recognized by a member type of
933 btEnum without qualifiers and a zero symbol value. */
934 if (tsym
.index
== indexNil
935 || (tsym
.index
== 0 && sh
->value
== 0))
936 type_code
= TYPE_CODE_ENUM
;
939 (*debug_swap
->swap_tir_in
) (bigend
,
940 &ax
[tsym
.index
].a_ti
,
942 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
943 || (tir
.bt
== btEnum
&& sh
->value
== 0))
945 type_code
= TYPE_CODE_ENUM
;
949 if (tsym
.value
> max_value
)
950 max_value
= tsym
.value
;
959 /* This is a no-op; is it trying to tell us something
960 we should be checking? */
961 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
965 /* This is something like a struct within a
966 struct. Skip over the fields of the inner
967 struct. The -1 is because the for loop will
968 increment ext_tsym. */
969 ext_tsym
= ((char *) debug_info
->external_sym
970 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
971 * external_sym_size
));
977 /* mips cc puts out a typedef for struct x if it is not yet
978 defined when it encounters
979 struct y { struct x *xp; };
984 /* Irix5 cc puts out a stIndirect for struct x if it is not
985 yet defined when it encounters
986 struct y { struct x *xp; };
991 complaint (&symfile_complaints
,
992 "declaration block contains unhandled symbol type %d",
998 /* In an stBlock, there is no way to distinguish structs,
999 unions, and enums at this point. This is a bug in the
1000 original design (that has been fixed with the recent
1001 addition of the stStruct, stUnion, and stEnum symbol
1002 types.) The way you can tell is if/when you see a variable
1003 or field of that type. In that case the variable's type
1004 (in the AUX table) says if the type is struct, union, or
1005 enum, and points back to the stBlock here. So you can
1006 patch the tag kind up later - but only if there actually is
1007 a variable or field of that type.
1009 So until we know for sure, we will guess at this point.
1011 If the first member has index==indexNil or a void type,
1012 assume we have an enumeration.
1013 Otherwise, if there is more than one member, and all
1014 the members have offset 0, assume we have a union.
1015 Otherwise, assume we have a struct.
1017 The heuristic could guess wrong in the case of of an
1018 enumeration with no members or a union with one (or zero)
1019 members, or when all except the last field of a struct have
1020 width zero. These are uncommon and/or illegal situations,
1021 and in any case guessing wrong probably doesn't matter
1024 But if we later do find out we were wrong, we fixup the tag
1025 kind. Members of an enumeration must be handled
1026 differently from struct/union fields, and that is harder to
1027 patch up, but luckily we shouldn't need to. (If there are
1028 any enumeration members, we can tell for sure it's an enum
1031 if (type_code
== TYPE_CODE_UNDEF
)
1033 if (nfields
> 1 && max_value
== 0)
1034 type_code
= TYPE_CODE_UNION
;
1036 type_code
= TYPE_CODE_STRUCT
;
1039 /* Create a new type or use the pending type. */
1040 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1041 if (pend
== (struct mdebug_pending
*) NULL
)
1043 t
= new_type (NULL
);
1044 add_pending (cur_fdr
, ext_sh
, t
);
1049 /* Do not set the tag name if it is a compiler generated tag name
1050 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1051 Alpha cc puts out an sh->iss of zero for those. */
1052 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1053 TYPE_TAG_NAME (t
) = NULL
;
1055 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1058 TYPE_CODE (t
) = type_code
;
1059 TYPE_LENGTH (t
) = sh
->value
;
1060 TYPE_NFIELDS (t
) = nfields
;
1061 TYPE_FIELDS (t
) = f
= ((struct field
*)
1063 nfields
* sizeof (struct field
)));
1065 if (type_code
== TYPE_CODE_ENUM
)
1067 int unsigned_enum
= 1;
1069 /* This is a non-empty enum. */
1071 /* DEC c89 has the number of enumerators in the sh.value field,
1072 not the type length, so we have to compensate for that
1073 incompatibility quirk.
1074 This might do the wrong thing for an enum with one or two
1075 enumerators and gcc -gcoff -fshort-enums, but these cases
1076 are hopefully rare enough.
1077 Alpha cc -migrate has a sh.value field of zero, we adjust
1079 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1080 || TYPE_LENGTH (t
) == 0)
1081 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1082 for (ext_tsym
= ext_sh
+ external_sym_size
;
1084 ext_tsym
+= external_sym_size
)
1087 struct symbol
*enum_sym
;
1089 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1091 if (tsym
.st
!= stMember
)
1094 FIELD_BITPOS (*f
) = tsym
.value
;
1095 FIELD_TYPE (*f
) = t
;
1096 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1097 FIELD_BITSIZE (*f
) = 0;
1098 FIELD_STATIC_KIND (*f
) = 0;
1100 enum_sym
= ((struct symbol
*)
1101 obstack_alloc (¤t_objfile
->symbol_obstack
,
1102 sizeof (struct symbol
)));
1103 memset (enum_sym
, 0, sizeof (struct symbol
));
1104 SYMBOL_NAME (enum_sym
) =
1105 obsavestring (f
->name
, strlen (f
->name
),
1106 ¤t_objfile
->symbol_obstack
);
1107 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1108 SYMBOL_TYPE (enum_sym
) = t
;
1109 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1110 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1111 if (SYMBOL_VALUE (enum_sym
) < 0)
1113 add_symbol (enum_sym
, top_stack
->cur_block
);
1115 /* Skip the stMembers that we've handled. */
1120 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1122 /* make this the current type */
1123 top_stack
->cur_type
= t
;
1124 top_stack
->cur_field
= 0;
1126 /* Do not create a symbol for alpha cc unnamed structs. */
1130 /* gcc puts out an empty struct for an opaque struct definitions,
1131 do not create a symbol for it either. */
1132 if (TYPE_NFIELDS (t
) == 0)
1134 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1138 s
= new_symbol (name
);
1139 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1140 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1141 SYMBOL_VALUE (s
) = 0;
1142 SYMBOL_TYPE (s
) = t
;
1143 add_symbol (s
, top_stack
->cur_block
);
1146 /* End of local variables shared by struct, union, enum, and
1147 block (as yet unknown struct/union/enum) processing. */
1151 found_ecoff_debugging_info
= 1;
1152 /* beginnning of (code) block. Value of symbol
1153 is the displacement from procedure start */
1154 push_parse_stack ();
1156 /* Do not start a new block if this is the outermost block of a
1157 procedure. This allows the LOC_BLOCK symbol to point to the
1158 block with the local variables, so funcname::var works. */
1159 if (top_stack
->blocktype
== stProc
1160 || top_stack
->blocktype
== stStaticProc
)
1162 top_stack
->blocktype
= stNil
;
1166 top_stack
->blocktype
= stBlock
;
1167 b
= new_block (top_stack
->maxsyms
);
1168 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1169 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1170 top_stack
->cur_block
= b
;
1171 add_block (b
, top_stack
->cur_st
);
1174 case stEnd
: /* end (of anything) */
1175 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1177 /* Finished with type */
1178 top_stack
->cur_type
= 0;
1180 else if (sh
->sc
== scText
&&
1181 (top_stack
->blocktype
== stProc
||
1182 top_stack
->blocktype
== stStaticProc
))
1184 /* Finished with procedure */
1185 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1186 struct mips_extra_func_info
*e
;
1188 struct type
*ftype
= top_stack
->cur_type
;
1191 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1193 /* Make up special symbol to contain procedure specific info */
1194 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1195 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1196 SYMBOL_CLASS (s
) = LOC_CONST
;
1197 SYMBOL_TYPE (s
) = mdebug_type_void
;
1198 e
= ((struct mips_extra_func_info
*)
1199 obstack_alloc (¤t_objfile
->symbol_obstack
,
1200 sizeof (struct mips_extra_func_info
)));
1201 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1202 SYMBOL_VALUE (s
) = (long) e
;
1203 e
->numargs
= top_stack
->numargs
;
1204 e
->pdr
.framereg
= -1;
1205 add_symbol (s
, top_stack
->cur_block
);
1207 /* Reallocate symbols, saving memory */
1208 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1210 /* f77 emits proc-level with address bounds==[0,0],
1211 So look for such child blocks, and patch them. */
1212 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1214 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1215 if (BLOCK_SUPERBLOCK (b_bad
) == b
1216 && BLOCK_START (b_bad
) == top_stack
->procadr
1217 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1219 BLOCK_START (b_bad
) = BLOCK_START (b
);
1220 BLOCK_END (b_bad
) = BLOCK_END (b
);
1224 if (TYPE_NFIELDS (ftype
) <= 0)
1226 /* No parameter type information is recorded with the function's
1227 type. Set that from the type of the parameter symbols. */
1228 int nparams
= top_stack
->numargs
;
1234 TYPE_NFIELDS (ftype
) = nparams
;
1235 TYPE_FIELDS (ftype
) = (struct field
*)
1236 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1238 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1240 sym
= BLOCK_SYM (b
, i
);
1241 switch (SYMBOL_CLASS (sym
))
1246 case LOC_REGPARM_ADDR
:
1247 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1248 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1258 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1260 /* End of (code) block. The value of the symbol is the
1261 displacement from the procedure`s start address of the
1262 end of this block. */
1263 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1264 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1266 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1268 /* End of outermost block. Pop parse stack and ignore. The
1269 following stEnd of stProc will take care of the block. */
1272 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1274 /* End of file. Pop parse stack and ignore. Higher
1275 level code deals with this. */
1279 complaint (&symfile_complaints
,
1280 "stEnd with storage class %d not handled", sh
->sc
);
1282 pop_parse_stack (); /* restore previous lexical context */
1285 case stMember
: /* member of struct or union */
1286 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1287 FIELD_NAME (*f
) = name
;
1288 FIELD_BITPOS (*f
) = sh
->value
;
1290 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1291 FIELD_BITSIZE (*f
) = bitsize
;
1292 FIELD_STATIC_KIND (*f
) = 0;
1295 case stIndirect
: /* forward declaration on Irix5 */
1296 /* Forward declarations from Irix5 cc are handled by cross_ref,
1300 case stTypedef
: /* type definition */
1301 found_ecoff_debugging_info
= 1;
1303 /* Typedefs for forward declarations and opaque structs from alpha cc
1304 are handled by cross_ref, skip them. */
1308 /* Parse the type or use the pending type. */
1309 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1310 if (pend
== (struct mdebug_pending
*) NULL
)
1312 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1313 add_pending (cur_fdr
, ext_sh
, t
);
1318 /* mips cc puts out a typedef with the name of the struct for forward
1319 declarations. These should not go into the symbol table and
1320 TYPE_NAME should not be set for them.
1321 They can't be distinguished from an intentional typedef to
1322 the same name however:
1324 struct x { int ix; int jx; };
1328 struct xx {int ixx; int jxx; };
1329 generates a cross referencing stTypedef for x and xx.
1330 The user visible effect of this is that the type of a pointer
1331 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1332 The problem is fixed with alpha cc and Irix5 cc. */
1334 /* However if the typedef cross references to an opaque aggregate, it
1335 is safe to omit it from the symbol table. */
1337 if (has_opaque_xref (cur_fdr
, sh
))
1339 s
= new_symbol (name
);
1340 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1341 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1342 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1343 SYMBOL_TYPE (s
) = t
;
1344 add_symbol (s
, top_stack
->cur_block
);
1346 /* Incomplete definitions of structs should not get a name. */
1347 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1348 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1349 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1350 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1352 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1353 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1355 /* If we are giving a name to a type such as "pointer to
1356 foo" or "function returning foo", we better not set
1357 the TYPE_NAME. If the program contains "typedef char
1358 *caddr_t;", we don't want all variables of type char
1359 * to print as caddr_t. This is not just a
1360 consequence of GDB's type management; CC and GCC (at
1361 least through version 2.4) both output variables of
1362 either type char * or caddr_t with the type
1363 refering to the stTypedef symbol for caddr_t. If a future
1364 compiler cleans this up it GDB is not ready for it
1365 yet, but if it becomes ready we somehow need to
1366 disable this check (without breaking the PCC/GCC2.4
1371 Fortunately, this check seems not to be necessary
1372 for anything except pointers or functions. */
1375 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1379 case stFile
: /* file name */
1380 push_parse_stack ();
1381 top_stack
->blocktype
= sh
->st
;
1384 /* I`ve never seen these for C */
1386 break; /* register relocation */
1388 break; /* forwarding address */
1390 break; /* constant */
1392 complaint (&symfile_complaints
, "unknown symbol type 0x%x", sh
->st
);
1399 /* Parse the type information provided in the raw AX entries for
1400 the symbol SH. Return the bitfield size in BS, in case.
1401 We must byte-swap the AX entries before we use them; BIGEND says whether
1402 they are big-endian or little-endian (from fh->fBigendian). */
1404 static struct type
*
1405 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1406 int bigend
, char *sym_name
)
1408 /* Null entries in this map are treated specially */
1409 static struct type
**map_bt
[] =
1411 &mdebug_type_void
, /* btNil */
1412 &mdebug_type_adr_32
, /* btAdr */
1413 &mdebug_type_char
, /* btChar */
1414 &mdebug_type_unsigned_char
, /* btUChar */
1415 &mdebug_type_short
, /* btShort */
1416 &mdebug_type_unsigned_short
, /* btUShort */
1417 &mdebug_type_int_32
, /* btInt */
1418 &mdebug_type_unsigned_int_32
, /* btUInt */
1419 &mdebug_type_long_32
, /* btLong */
1420 &mdebug_type_unsigned_long_32
, /* btULong */
1421 &mdebug_type_float
, /* btFloat */
1422 &mdebug_type_double
, /* btDouble */
1429 &mdebug_type_complex
, /* btComplex */
1430 &mdebug_type_double_complex
, /* btDComplex */
1432 &mdebug_type_fixed_dec
, /* btFixedDec */
1433 &mdebug_type_float_dec
, /* btFloatDec */
1434 &mdebug_type_string
, /* btString */
1437 &mdebug_type_void
, /* btVoid */
1438 0, /* DEC C++: Pointer to member */
1439 0, /* DEC C++: Virtual function table */
1440 0, /* DEC C++: Class (Record) */
1441 &mdebug_type_long_64
, /* btLong64 */
1442 &mdebug_type_unsigned_long_64
, /* btULong64 */
1443 &mdebug_type_long_long_64
, /* btLongLong64 */
1444 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1445 &mdebug_type_adr_64
, /* btAdr64 */
1446 &mdebug_type_int_64
, /* btInt64 */
1447 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1451 struct type
*tp
= 0;
1452 enum type_code type_code
= TYPE_CODE_UNDEF
;
1454 /* Handle undefined types, they have indexNil. */
1455 if (aux_index
== indexNil
)
1456 return mdebug_type_int
;
1458 /* Handle corrupt aux indices. */
1459 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1461 index_complaint (sym_name
);
1462 return mdebug_type_int
;
1466 /* Use aux as a type information record, map its basic type. */
1467 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1468 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1470 basic_type_complaint (t
->bt
, sym_name
);
1471 return mdebug_type_int
;
1475 tp
= *map_bt
[t
->bt
];
1480 /* Cannot use builtin types -- build our own */
1484 type_code
= TYPE_CODE_STRUCT
;
1487 type_code
= TYPE_CODE_UNION
;
1490 type_code
= TYPE_CODE_ENUM
;
1493 type_code
= TYPE_CODE_RANGE
;
1496 type_code
= TYPE_CODE_SET
;
1499 /* alpha cc -migrate uses this for typedefs. The true type will
1500 be obtained by crossreferencing below. */
1501 type_code
= TYPE_CODE_ERROR
;
1504 /* alpha cc uses this for typedefs. The true type will be
1505 obtained by crossreferencing below. */
1506 type_code
= TYPE_CODE_ERROR
;
1509 basic_type_complaint (t
->bt
, sym_name
);
1510 return mdebug_type_int
;
1514 /* Move on to next aux */
1519 int width
= AUX_GET_WIDTH (bigend
, ax
);
1520 #if 0 /* OBSOLETE CFront */
1521 // OBSOLETE /* Inhibit core dumps with some cfront generated objects that
1522 // OBSOLETE corrupt the TIR. */
1523 #endif /* OBSOLETE CFront */
1524 /* Inhibit core dumps if TIR is corrupted. */
1525 if (bs
== (int *) NULL
)
1527 /* Alpha cc -migrate encodes char and unsigned char types
1528 as short and unsigned short types with a field width of 8.
1529 Enum types also have a field width which we ignore for now. */
1530 if (t
->bt
== btShort
&& width
== 8)
1531 tp
= mdebug_type_char
;
1532 else if (t
->bt
== btUShort
&& width
== 8)
1533 tp
= mdebug_type_unsigned_char
;
1534 else if (t
->bt
== btEnum
)
1537 complaint (&symfile_complaints
, "can't handle TIR fBitfield for %s",
1545 /* A btIndirect entry cross references to an aux entry containing
1547 if (t
->bt
== btIndirect
)
1554 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1556 if (rn
->rfd
== 0xfff)
1558 rf
= AUX_GET_ISYM (bigend
, ax
);
1566 complaint (&symfile_complaints
,
1567 "unable to cross ref btIndirect for %s", sym_name
);
1568 return mdebug_type_int
;
1570 xref_fh
= get_rfd (fd
, rf
);
1571 xref_fd
= xref_fh
- debug_info
->fdr
;
1572 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1573 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1576 /* All these types really point to some (common) MIPS type
1577 definition, and only the type-qualifiers fully identify
1578 them. We'll make the same effort at sharing. */
1579 if (t
->bt
== btStruct
||
1583 /* btSet (I think) implies that the name is a tag name, not a typedef
1584 name. This apparently is a MIPS extension for C sets. */
1589 /* Try to cross reference this type, build new type on failure. */
1590 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1591 if (tp
== (struct type
*) NULL
)
1592 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1594 /* DEC c89 produces cross references to qualified aggregate types,
1595 dereference them. */
1596 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1597 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1598 tp
= TYPE_TARGET_TYPE (tp
);
1600 /* Make sure that TYPE_CODE(tp) has an expected type code.
1601 Any type may be returned from cross_ref if file indirect entries
1603 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1604 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1605 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1607 unexpected_type_code_complaint (sym_name
);
1612 /* Usually, TYPE_CODE(tp) is already type_code. The main
1613 exception is if we guessed wrong re struct/union/enum.
1614 But for struct vs. union a wrong guess is harmless, so
1615 don't complain(). */
1616 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1617 && type_code
!= TYPE_CODE_ENUM
)
1618 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1619 && type_code
== TYPE_CODE_ENUM
))
1621 bad_tag_guess_complaint (sym_name
);
1624 if (TYPE_CODE (tp
) != type_code
)
1626 TYPE_CODE (tp
) = type_code
;
1629 /* Do not set the tag name if it is a compiler generated tag name
1630 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1631 if (name
[0] == '.' || name
[0] == '\0')
1632 TYPE_TAG_NAME (tp
) = NULL
;
1633 else if (TYPE_TAG_NAME (tp
) == NULL
1634 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1635 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1636 ¤t_objfile
->type_obstack
);
1640 /* All these types really point to some (common) MIPS type
1641 definition, and only the type-qualifiers fully identify
1642 them. We'll make the same effort at sharing.
1643 FIXME: We are not doing any guessing on range types. */
1644 if (t
->bt
== btRange
)
1648 /* Try to cross reference this type, build new type on failure. */
1649 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1650 if (tp
== (struct type
*) NULL
)
1651 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1653 /* Make sure that TYPE_CODE(tp) has an expected type code.
1654 Any type may be returned from cross_ref if file indirect entries
1656 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1658 unexpected_type_code_complaint (sym_name
);
1662 /* Usually, TYPE_CODE(tp) is already type_code. The main
1663 exception is if we guessed wrong re struct/union/enum. */
1664 if (TYPE_CODE (tp
) != type_code
)
1666 bad_tag_guess_complaint (sym_name
);
1667 TYPE_CODE (tp
) = type_code
;
1669 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1670 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1671 ¤t_objfile
->type_obstack
);
1674 if (t
->bt
== btTypedef
)
1678 /* Try to cross reference this type, it should succeed. */
1679 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1680 if (tp
== (struct type
*) NULL
)
1682 complaint (&symfile_complaints
,
1683 "unable to cross ref btTypedef for %s", sym_name
);
1684 tp
= mdebug_type_int
;
1688 /* Deal with range types */
1689 if (t
->bt
== btRange
)
1691 TYPE_NFIELDS (tp
) = 2;
1692 TYPE_FIELDS (tp
) = ((struct field
*)
1693 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1694 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1695 ¤t_objfile
->type_obstack
);
1696 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1698 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1699 ¤t_objfile
->type_obstack
);
1700 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1704 /* Parse all the type qualifiers now. If there are more
1705 than 6 the game will continue in the next aux */
1709 #define PARSE_TQ(tq) \
1710 if (t->tq != tqNil) \
1711 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1723 /* mips cc 2.x and gcc never put out continued aux entries. */
1727 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1731 /* Complain for illegal continuations due to corrupt aux entries. */
1733 complaint (&symfile_complaints
, "illegal TIR continued for %s", sym_name
);
1738 /* Make up a complex type from a basic one. Type is passed by
1739 reference in TPP and side-effected as necessary. The type
1740 qualifier TQ says how to handle the aux symbols at AX for
1741 the symbol SX we are currently analyzing. BIGEND says whether
1742 aux symbols are big-endian or little-endian.
1743 Returns the number of aux symbols we parsed. */
1746 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1752 /* Used in array processing */
1763 t
= lookup_pointer_type (*tpp
);
1768 t
= lookup_function_type (*tpp
);
1775 /* Determine and record the domain type (type of index) */
1776 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1782 rf
= AUX_GET_ISYM (bigend
, ax
);
1785 fh
= get_rfd (fd
, rf
);
1787 indx
= parse_type (fh
- debug_info
->fdr
,
1788 debug_info
->external_aux
+ fh
->iauxBase
,
1789 id
, (int *) NULL
, bigend
, sym_name
);
1791 /* The bounds type should be an integer type, but might be anything
1792 else due to corrupt aux entries. */
1793 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1795 complaint (&symfile_complaints
,
1796 "illegal array index type for %s, assuming int", sym_name
);
1797 indx
= mdebug_type_int
;
1800 /* Get the bounds, and create the array type. */
1802 lower
= AUX_GET_DNLOW (bigend
, ax
);
1804 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1806 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1808 range
= create_range_type ((struct type
*) NULL
, indx
,
1811 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1813 /* We used to fill in the supplied array element bitsize
1814 here if the TYPE_LENGTH of the target type was zero.
1815 This happens for a `pointer to an array of anonymous structs',
1816 but in this case the array element bitsize is also zero,
1817 so nothing is gained.
1818 And we used to check the TYPE_LENGTH of the target type against
1819 the supplied array element bitsize.
1820 gcc causes a mismatch for `pointer to array of object',
1821 since the sdb directives it uses do not have a way of
1822 specifying the bitsize, but it does no harm (the
1823 TYPE_LENGTH should be correct) and we should be able to
1824 ignore the erroneous bitsize from the auxiliary entry safely.
1825 dbx seems to ignore it too. */
1827 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1829 if (TYPE_LENGTH (*tpp
) == 0)
1831 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1838 /* Volatile -- currently ignored */
1842 /* Const -- currently ignored */
1846 complaint (&symfile_complaints
, "unknown type qualifier 0x%x", tq
);
1852 /* Parse a procedure descriptor record PR. Note that the procedure is
1853 parsed _after_ the local symbols, now we just insert the extra
1854 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1855 already been placed in the procedure's main block. Note also that
1856 images that have been partially stripped (ld -x) have been deprived
1857 of local symbols, and we have to cope with them here. FIRST_OFF is
1858 the offset of the first procedure for this FDR; we adjust the
1859 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1860 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1861 in question, or NULL to use top_stack->cur_block. */
1863 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1866 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1867 struct partial_symtab
*pst
)
1869 struct symbol
*s
, *i
;
1871 struct mips_extra_func_info
*e
;
1874 /* Simple rule to find files linked "-x" */
1875 if (cur_fdr
->rss
== -1)
1879 /* Static procedure at address pr->adr. Sigh. */
1880 /* FIXME-32x64. assuming pr->adr fits in long. */
1881 complaint (&symfile_complaints
,
1882 "can't handle PDR for static proc at 0x%lx",
1883 (unsigned long) pr
->adr
);
1891 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1892 ((char *) debug_info
->external_ext
1894 * debug_swap
->external_ext_size
)),
1896 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1904 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1905 ((char *) debug_info
->external_sym
1906 + ((cur_fdr
->isymBase
+ pr
->isym
)
1907 * debug_swap
->external_sym_size
)),
1909 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1912 if (search_symtab
!= NULL
)
1915 /* This loses both in the case mentioned (want a static, find a global),
1916 but also if we are looking up a non-mangled name which happens to
1917 match the name of a mangled function. */
1918 /* We have to save the cur_fdr across the call to lookup_symbol.
1919 If the pdr is for a static function and if a global function with
1920 the same name exists, lookup_symbol will eventually read in the symtab
1921 for the global function and clobber cur_fdr. */
1922 FDR
*save_cur_fdr
= cur_fdr
;
1923 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1924 cur_fdr
= save_cur_fdr
;
1928 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1934 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1935 VAR_NAMESPACE
, LOC_BLOCK
);
1939 b
= SYMBOL_BLOCK_VALUE (s
);
1943 complaint (&symfile_complaints
, "PDR for %s, but no symbol", sh_name
);
1947 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1948 s
= new_symbol (sh_name
);
1949 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1950 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1951 /* Donno its type, hope int is ok */
1952 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1953 add_symbol (s
, top_stack
->cur_block
);
1954 /* Wont have symbols for this one */
1956 SYMBOL_BLOCK_VALUE (s
) = b
;
1957 BLOCK_FUNCTION (b
) = s
;
1958 BLOCK_START (b
) = pr
->adr
;
1959 /* BOUND used to be the end of procedure's text, but the
1960 argument is no longer passed in. */
1961 BLOCK_END (b
) = bound
;
1962 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1963 add_block (b
, top_stack
->cur_st
);
1967 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1971 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1973 e
->pdr
.isym
= (long) s
;
1975 /* GDB expects the absolute function start address for the
1976 procedure descriptor in e->pdr.adr.
1977 As the address in the procedure descriptor is usually relative,
1978 we would have to relocate e->pdr.adr with cur_fdr->adr and
1979 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1980 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1981 in shared libraries on some systems, and on other systems
1982 e->pdr.adr is sometimes offset by a bogus value.
1983 To work around these problems, we replace e->pdr.adr with
1984 the start address of the function. */
1985 e
->pdr
.adr
= BLOCK_START (b
);
1987 /* Correct incorrect setjmp procedure descriptor from the library
1988 to make backtrace through setjmp work. */
1989 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1991 complaint (&symfile_complaints
, "fixing bad setjmp PDR from libc");
1992 e
->pdr
.pcreg
= RA_REGNUM
;
1993 e
->pdr
.regmask
= 0x80000000;
1994 e
->pdr
.regoffset
= -4;
1998 /* It would be reasonable that functions that have been compiled
1999 without debugging info have a btNil type for their return value,
2000 and functions that are void and are compiled with debugging info
2002 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2003 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2005 The glevel field in cur_fdr could be used to determine the presence
2006 of debugging info, but GCC doesn't always pass the -g switch settings
2007 to the assembler and GAS doesn't set the glevel field from the -g switch
2009 To work around these problems, the return value type of a TYPE_CODE_VOID
2010 function is adjusted accordingly if no debugging info was found in the
2011 compilation unit. */
2013 if (processing_gcc_compilation
== 0
2014 && found_ecoff_debugging_info
== 0
2015 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2016 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2019 /* Relocate the extra function info pointed to by the symbol table. */
2022 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2024 struct mips_extra_func_info
*e
;
2026 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2028 e
->pdr
.adr
+= delta
;
2031 /* Parse the external symbol ES. Just call parse_symbol() after
2032 making sure we know where the aux are for it.
2033 BIGEND says whether aux entries are big-endian or little-endian.
2035 This routine clobbers top_stack->cur_block and ->cur_st. */
2037 static void parse_external (EXTR
*, int, struct section_offsets
*,
2041 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2042 struct objfile
*objfile
)
2046 if (es
->ifd
!= ifdNil
)
2049 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2050 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2054 cur_fdr
= debug_info
->fdr
;
2058 /* Reading .o files */
2059 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2062 switch (es
->asym
.st
)
2065 /* These are generated for static symbols in .o files,
2086 /* FIXME: Turn this into a complaint? */
2088 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2089 what
, debug_info
->ssext
+ es
->asym
.iss
,
2090 fdr_name (cur_fdr
));
2094 switch (es
->asym
.st
)
2098 /* There is no need to parse the external procedure symbols.
2099 If they are from objects compiled without -g, their index will
2100 be indexNil, and the symbol definition from the minimal symbol
2101 is preferrable (yielding a function returning int instead of int).
2102 If the index points to a local procedure symbol, the local
2103 symbol already provides the correct type.
2104 Note that the index of the external procedure symbol points
2105 to the local procedure symbol in the local symbol table, and
2106 _not_ to the auxiliary symbol info. */
2110 /* Global common symbols are resolved by the runtime loader,
2112 if (SC_IS_COMMON (es
->asym
.sc
))
2115 /* Note that the case of a symbol with indexNil must be handled
2116 anyways by parse_symbol(). */
2117 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2124 /* Parse the line number info for file descriptor FH into
2125 GDB's linetable LT. MIPS' encoding requires a little bit
2126 of magic to get things out. Note also that MIPS' line
2127 numbers can go back and forth, apparently we can live
2128 with that and do not need to reorder our linetables */
2130 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2131 struct partial_symtab
*, CORE_ADDR
);
2134 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2135 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2137 unsigned char *base
;
2139 int delta
, count
, lineno
= 0;
2141 if (fh
->cbLine
== 0)
2144 /* Scan by procedure descriptors */
2146 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2150 unsigned char *halt
;
2152 /* No code for this one */
2153 if (pr
->iline
== ilineNil
||
2154 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2157 /* Determine start and end address of compressed line bytes for
2159 base
= debug_info
->line
+ fh
->cbLineOffset
;
2160 if (j
!= (fh
->cpd
- 1))
2161 halt
= base
+ pr
[1].cbLineOffset
;
2163 halt
= base
+ fh
->cbLine
;
2164 base
+= pr
->cbLineOffset
;
2166 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2168 l
= adr
>> 2; /* in words */
2169 for (lineno
= pr
->lnLow
; base
< halt
;)
2171 count
= *base
& 0x0f;
2172 delta
= *base
++ >> 4;
2177 delta
= (base
[0] << 8) | base
[1];
2178 if (delta
>= 0x8000)
2182 lineno
+= delta
; /* first delta is 0 */
2184 /* Complain if the line table overflows. Could happen
2185 with corrupt binaries. */
2186 if (lt
->nitems
>= maxlines
)
2188 complaint (&symfile_complaints
,
2189 "guessed size of linetable for %s incorrectly",
2193 k
= add_line (lt
, lineno
, l
, k
);
2200 function_outside_compilation_unit_complaint (const char *arg1
)
2202 complaint (&symfile_complaints
,
2203 "function `%s' appears to be defined outside of all compilation units",
2207 /* Master parsing procedure for first-pass reading of file symbols
2208 into a partial_symtab. */
2211 parse_partial_symbols (struct objfile
*objfile
)
2213 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2214 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2215 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2216 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2217 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2218 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2220 HDRR
*hdr
= &debug_info
->symbolic_header
;
2221 /* Running pointers */
2226 register EXTR
*ext_in
;
2229 struct partial_symtab
*pst
;
2230 int textlow_not_set
= 1;
2231 int past_first_source_file
= 0;
2233 /* List of current psymtab's include files */
2234 char **psymtab_include_list
;
2235 int includes_allocated
;
2238 struct pst_map
*fdr_to_pst
;
2239 /* Index within current psymtab dependency list */
2240 struct partial_symtab
**dependency_list
;
2241 int dependencies_used
, dependencies_allocated
;
2242 struct cleanup
*old_chain
;
2244 enum language prev_language
;
2245 asection
*text_sect
;
2246 int relocatable
= 0;
2248 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2249 the shared libraries are prelinked at a high memory address.
2250 We have to adjust the start address of the object file for this case,
2251 by setting it to the start address of the first procedure in the file.
2252 But we should do no adjustments if we are debugging a .o file, where
2253 the text section (and fh->adr) really starts at zero. */
2254 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2255 if (text_sect
!= NULL
2256 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2259 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2260 sizeof (EXTR
) * hdr
->iextMax
);
2262 includes_allocated
= 30;
2264 psymtab_include_list
= (char **) alloca (includes_allocated
*
2266 next_symbol_text_func
= mdebug_next_symbol_text
;
2268 dependencies_allocated
= 30;
2269 dependencies_used
= 0;
2271 (struct partial_symtab
**) alloca (dependencies_allocated
*
2272 sizeof (struct partial_symtab
*));
2274 last_source_file
= NULL
;
2279 * Only parse the Local and External symbols, and the Relative FDR.
2280 * Fixup enough of the loader symtab to be able to use it.
2281 * Allocate space only for the file's portions we need to
2286 max_glevel
= MIN_GLEVEL
;
2288 /* Allocate the map FDR -> PST.
2289 Minor hack: -O3 images might claim some global data belongs
2290 to FDR -1. We`ll go along with that */
2291 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2292 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2295 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2296 fdr_to_pst
[-1].pst
= pst
;
2300 /* Allocate the global pending list. */
2302 ((struct mdebug_pending
**)
2303 obstack_alloc (&objfile
->psymbol_obstack
,
2304 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2305 memset (pending_list
, 0,
2306 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2308 /* Pass 0 over external syms: swap them in. */
2309 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2310 make_cleanup (xfree
, ext_block
);
2312 ext_out
= (char *) debug_info
->external_ext
;
2313 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2315 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2316 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2318 /* Pass 1 over external syms: Presize and partition the list */
2320 ext_in_end
= ext_in
+ hdr
->iextMax
;
2321 for (; ext_in
< ext_in_end
; ext_in
++)
2323 /* See calls to complain below. */
2324 if (ext_in
->ifd
>= -1
2325 && ext_in
->ifd
< hdr
->ifdMax
2326 && ext_in
->asym
.iss
>= 0
2327 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2328 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2331 /* Pass 1.5 over files: partition out global symbol space */
2333 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2335 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2336 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2337 fdr_to_pst
[f_idx
].n_globals
= 0;
2342 For ECOFF in ELF, we skip the creation of the minimal symbols.
2343 The ECOFF symbols should be a subset of the Elf symbols, and the
2344 section information of the elf symbols will be more accurate.
2345 FIXME! What about Irix 5's native linker?
2347 By default, Elf sections which don't exist in ECOFF
2348 get put in ECOFF's absolute section by the gnu linker.
2349 Since absolute sections don't get relocated, we
2350 end up calculating an address different from that of
2351 the symbol's minimal symbol (created earlier from the
2354 To fix this, either :
2355 1) don't create the duplicate symbol
2356 (assumes ECOFF symtab is a subset of the ELF symtab;
2357 assumes no side-effects result from ignoring ECOFF symbol)
2358 2) create it, only if lookup for existing symbol in ELF's minimal
2361 assumes no side-effects result from ignoring ECOFF symbol)
2362 3) create it, but lookup ELF's minimal symbol and use it's section
2363 during relocation, then modify "uniqify" phase to merge and
2364 eliminate the duplicate symbol
2365 (highly inefficient)
2367 I've implemented #1 here...
2368 Skip the creation of the minimal symbols based on the ECOFF
2371 /* Pass 2 over external syms: fill in external symbols */
2373 ext_in_end
= ext_in
+ hdr
->iextMax
;
2374 for (; ext_in
< ext_in_end
; ext_in
++)
2376 enum minimal_symbol_type ms_type
= mst_text
;
2377 CORE_ADDR svalue
= ext_in
->asym
.value
;
2379 /* The Irix 5 native tools seem to sometimes generate bogus
2380 external symbols. */
2381 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2383 complaint (&symfile_complaints
,
2384 "bad ifd for external symbol: %d (max %ld)", ext_in
->ifd
,
2388 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2390 complaint (&symfile_complaints
,
2391 "bad iss for external symbol: %ld (max %ld)",
2392 ext_in
->asym
.iss
, hdr
->issExtMax
);
2396 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2397 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2400 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2404 /* Pass 3 over files, over local syms: fill in static symbols */
2405 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2407 /* Process ECOFF Symbol Types and Storage Classes */
2408 switch (ext_in
->asym
.st
)
2411 /* Beginnning of Procedure */
2412 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2415 /* Load time only static procs */
2416 ms_type
= mst_file_text
;
2417 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2420 /* External symbol */
2421 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2423 /* The value of a common symbol is its size, not its address.
2427 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2430 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2432 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2435 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2437 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2440 svalue
+= ANOFFSET (objfile
->section_offsets
,
2441 get_section_index (objfile
, ".sbss"));
2449 /* On certain platforms, some extra label symbols can be
2450 generated by the linker. One possible usage for this kind
2451 of symbols is to represent the address of the begining of a
2452 given section. For instance, on Tru64 5.1, the address of
2453 the _ftext label is the start address of the .text section.
2455 The storage class of these symbols is usually directly
2456 related to the section to which the symbol refers. For
2457 instance, on Tru64 5.1, the storage class for the _fdata
2458 label is scData, refering to the .data section.
2460 It is actually possible that the section associated to the
2461 storage class of the label does not exist. On True64 5.1
2462 for instance, the libm.so shared library does not contain
2463 any .data section, although it contains a _fpdata label
2464 which storage class is scData... Since these symbols are
2465 usually useless for the debugger user anyway, we just
2466 discard these symbols.
2469 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2471 if (objfile
->sect_index_text
== -1)
2474 ms_type
= mst_file_text
;
2475 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2477 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2479 if (objfile
->sect_index_data
== -1)
2482 ms_type
= mst_file_data
;
2483 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2485 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2487 if (objfile
->sect_index_bss
== -1)
2490 ms_type
= mst_file_bss
;
2491 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2493 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2495 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2497 if (sbss_sect_index
== -1)
2500 ms_type
= mst_file_bss
;
2501 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2508 /* The alpha has the section start addresses in stLocal symbols
2509 whose name starts with a `.'. Skip those but complain for all
2510 other stLocal symbols.
2511 Irix6 puts the section start addresses in stNil symbols, skip
2517 ms_type
= mst_unknown
;
2518 unknown_ext_complaint (name
);
2520 if (!ECOFF_IN_ELF (cur_bfd
))
2521 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2524 /* Pass 3 over files, over local syms: fill in static symbols */
2525 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2527 struct partial_symtab
*save_pst
;
2531 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2535 fdr_to_pst
[f_idx
].pst
= NULL
;
2539 /* Determine the start address for this object file from the
2540 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2544 if (relocatable
|| textlow
!= 0)
2545 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2549 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2552 objfile
->global_psymbols
.next
,
2553 objfile
->static_psymbols
.next
);
2554 pst
->read_symtab_private
= ((char *)
2555 obstack_alloc (&objfile
->psymbol_obstack
,
2556 sizeof (struct symloc
)));
2557 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2560 FDR_IDX (pst
) = f_idx
;
2561 CUR_BFD (pst
) = cur_bfd
;
2562 DEBUG_SWAP (pst
) = debug_swap
;
2563 DEBUG_INFO (pst
) = debug_info
;
2564 PENDING_LIST (pst
) = pending_list
;
2566 /* The way to turn this into a symtab is to call... */
2567 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2569 /* Set up language for the pst.
2570 The language from the FDR is used if it is unambigious (e.g. cfront
2571 with native cc and g++ will set the language to C).
2572 Otherwise we have to deduce the language from the filename.
2573 Native ecoff has every header file in a separate FDR, so
2574 deduce_language_from_filename will return language_unknown for
2575 a header file, which is not what we want.
2576 But the FDRs for the header files are after the FDR for the source
2577 file, so we can assign the language of the source file to the
2578 following header files. Then we save the language in the private
2579 pst data so that we can reuse it when building symtabs. */
2580 prev_language
= psymtab_language
;
2584 case langCplusplusV2
:
2585 psymtab_language
= language_cplus
;
2588 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2591 if (psymtab_language
== language_unknown
)
2592 psymtab_language
= prev_language
;
2593 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2595 pst
->texthigh
= pst
->textlow
;
2597 /* For stabs-in-ecoff files, the second symbol must be @stab.
2598 This symbol is emitted by mips-tfile to signal that the
2599 current object file uses encapsulated stabs instead of mips
2600 ecoff for local symbols. (It is the second symbol because
2601 the first symbol is the stFile used to signal the start of a
2603 processing_gcc_compilation
= 0;
2606 (*swap_sym_in
) (cur_bfd
,
2607 ((char *) debug_info
->external_sym
2608 + (fh
->isymBase
+ 1) * external_sym_size
),
2610 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2611 processing_gcc_compilation
= 2;
2614 if (processing_gcc_compilation
!= 0)
2616 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2621 (*swap_sym_in
) (cur_bfd
,
2622 (((char *) debug_info
->external_sym
)
2623 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2625 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2626 if (!ECOFF_IS_STAB (&sh
))
2628 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2633 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2634 if (sh
.st
== stStaticProc
)
2636 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2637 prim_record_minimal_symbol_and_info (namestring
,
2641 SECT_OFF_TEXT (objfile
),
2645 procaddr
= sh
.value
;
2647 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2648 (debug_info
->external_aux
2651 (*swap_sym_in
) (cur_bfd
,
2652 ((char *) debug_info
->external_sym
2653 + ((fh
->isymBase
+ isym
- 1)
2654 * external_sym_size
)),
2658 CORE_ADDR high
= procaddr
+ sh
.value
;
2660 /* Kludge for Irix 5.2 zero fh->adr. */
2662 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2663 pst
->textlow
= procaddr
;
2664 if (high
> pst
->texthigh
)
2665 pst
->texthigh
= high
;
2668 else if (sh
.st
== stStatic
)
2683 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2684 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2685 prim_record_minimal_symbol_and_info (namestring
,
2689 SECT_OFF_DATA (objfile
),
2695 /* FIXME! Shouldn't this use cases for bss,
2696 then have the default be abs? */
2697 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2698 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2699 prim_record_minimal_symbol_and_info (namestring
,
2703 SECT_OFF_BSS (objfile
),
2711 /* Handle stabs continuation */
2713 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2714 int len
= strlen (stabstring
);
2715 while (stabstring
[len
- 1] == '\\')
2718 char *stabstring1
= stabstring
;
2722 /* Ignore continuation char from 1st string */
2725 /* Read next stabstring */
2727 (*swap_sym_in
) (cur_bfd
,
2728 (((char *) debug_info
->external_sym
)
2729 + (fh
->isymBase
+ cur_sdx
)
2730 * external_sym_size
),
2732 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2733 len2
= strlen (stabstring2
);
2735 /* Concatinate stabstring2 with stabstring1 */
2737 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2738 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2741 stabstring
= xmalloc (len
+ len2
+ 1);
2742 strcpy (stabstring
, stabstring1
);
2744 strcpy (stabstring
+ len
, stabstring2
);
2752 * Standard, external, non-debugger, symbols
2755 case N_TEXT
| N_EXT
:
2756 case N_NBTEXT
| N_EXT
:
2757 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2760 case N_DATA
| N_EXT
:
2761 case N_NBDATA
| N_EXT
:
2762 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2767 case N_NBBSS
| N_EXT
:
2768 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2769 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2776 /* Standard, local, non-debugger, symbols */
2780 /* We need to be able to deal with both N_FN or N_TEXT,
2781 because we have no way of knowing whether the sys-supplied ld
2782 or GNU ld was used to make the executable. Sequents throw
2783 in another wrinkle -- they renumbered N_FN. */
2791 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2794 case N_UNDF
| N_EXT
:
2795 continue; /* Just undefined, not COMMON */
2800 /* Lots of symbol types we can just ignore. */
2807 /* Keep going . . . */
2810 * Special symbol types for GNU
2813 case N_INDR
| N_EXT
:
2815 case N_SETA
| N_EXT
:
2817 case N_SETT
| N_EXT
:
2819 case N_SETD
| N_EXT
:
2821 case N_SETB
| N_EXT
:
2832 static int prev_so_symnum
= -10;
2833 static int first_so_symnum
;
2835 int prev_textlow_not_set
;
2837 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2839 prev_textlow_not_set
= textlow_not_set
;
2841 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2842 /* A zero value is probably an indication for the SunPRO 3.0
2843 compiler. end_psymtab explicitly tests for zero, so
2844 don't relocate it. */
2848 textlow_not_set
= 1;
2852 textlow_not_set
= 0;
2854 textlow_not_set
= 0;
2856 past_first_source_file
= 1;
2858 if (prev_so_symnum
!= symnum
- 1)
2859 { /* Here if prev stab wasn't N_SO */
2860 first_so_symnum
= symnum
;
2864 pst
= (struct partial_symtab
*) 0;
2866 dependencies_used
= 0;
2870 prev_so_symnum
= symnum
;
2872 /* End the current partial symtab and start a new one */
2874 /* SET_NAMESTRING ();*/
2875 namestring
= stabstring
;
2877 /* Null name means end of .o file. Don't start a new one. */
2878 if (*namestring
== '\000')
2881 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2882 The first one is a directory name; the second the file name.
2883 If pst exists, is empty, and has a filename ending in '/',
2884 we assume the previous N_SO was a directory name. */
2886 p
= strrchr (namestring
, '/');
2887 if (p
&& *(p
+ 1) == '\000')
2888 continue; /* Simply ignore directory name SOs */
2890 /* Some other compilers (C++ ones in particular) emit useless
2891 SOs for non-existant .c files. We ignore all subsequent SOs that
2892 immediately follow the first. */
2904 enum language tmp_language
;
2905 /* Mark down an include file in the current psymtab */
2907 /* SET_NAMESTRING ();*/
2908 namestring
= stabstring
;
2910 tmp_language
= deduce_language_from_filename (namestring
);
2912 /* Only change the psymtab's language if we've learned
2913 something useful (eg. tmp_language is not language_unknown).
2914 In addition, to match what start_subfile does, never change
2916 if (tmp_language
!= language_unknown
2917 && (tmp_language
!= language_c
2918 || psymtab_language
!= language_cplus
))
2919 psymtab_language
= tmp_language
;
2921 /* In C++, one may expect the same filename to come round many
2922 times, when code is coming alternately from the main file
2923 and from inline functions in other files. So I check to see
2924 if this is a file we've seen before -- either the main
2925 source file, or a previously included file.
2927 This seems to be a lot of time to be spending on N_SOL, but
2928 things like "break c-exp.y:435" need to work (I
2929 suppose the psymtab_include_list could be hashed or put
2930 in a binary tree, if profiling shows this is a major hog). */
2931 if (pst
&& STREQ (namestring
, pst
->filename
))
2935 for (i
= 0; i
< includes_used
; i
++)
2936 if (STREQ (namestring
, psymtab_include_list
[i
]))
2945 psymtab_include_list
[includes_used
++] = namestring
;
2946 if (includes_used
>= includes_allocated
)
2948 char **orig
= psymtab_include_list
;
2950 psymtab_include_list
= (char **)
2951 alloca ((includes_allocated
*= 2) *
2953 memcpy (psymtab_include_list
, orig
,
2954 includes_used
* sizeof (char *));
2958 case N_LSYM
: /* Typedef or automatic variable. */
2959 case N_STSYM
: /* Data seg var -- static */
2960 case N_LCSYM
: /* BSS " */
2961 case N_ROSYM
: /* Read-only data seg var -- static. */
2962 case N_NBSTS
: /* Gould nobase. */
2963 case N_NBLCS
: /* symbols. */
2965 case N_GSYM
: /* Global (extern) variable; can be
2966 data or bss (sigh FIXME). */
2968 /* Following may probably be ignored; I'll leave them here
2969 for now (until I do Pascal and Modula 2 extensions). */
2971 case N_PC
: /* I may or may not need this; I
2973 case N_M2C
: /* I suspect that I can ignore this here. */
2974 case N_SCOPE
: /* Same. */
2976 /* SET_NAMESTRING ();*/
2977 namestring
= stabstring
;
2978 p
= (char *) strchr (namestring
, ':');
2980 continue; /* Not a debugging symbol. */
2984 /* Main processing section for debugging symbols which
2985 the initial read through the symbol tables needs to worry
2986 about. If we reach this point, the symbol which we are
2987 considering is definitely one we are interested in.
2988 p must also contain the (valid) index into the namestring
2989 which indicates the debugging type symbol. */
2994 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2995 #ifdef STATIC_TRANSFORM_NAME
2996 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2998 add_psymbol_to_list (namestring
, p
- namestring
,
2999 VAR_NAMESPACE
, LOC_STATIC
,
3000 &objfile
->static_psymbols
,
3002 psymtab_language
, objfile
);
3005 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3006 /* The addresses in these entries are reported to be
3007 wrong. See the code that reads 'G's for symtabs. */
3008 add_psymbol_to_list (namestring
, p
- namestring
,
3009 VAR_NAMESPACE
, LOC_STATIC
,
3010 &objfile
->global_psymbols
,
3012 psymtab_language
, objfile
);
3016 /* When a 'T' entry is defining an anonymous enum, it
3017 may have a name which is the empty string, or a
3018 single space. Since they're not really defining a
3019 symbol, those shouldn't go in the partial symbol
3020 table. We do pick up the elements of such enums at
3021 'check_enum:', below. */
3022 if (p
>= namestring
+ 2
3023 || (p
== namestring
+ 1
3024 && namestring
[0] != ' '))
3026 add_psymbol_to_list (namestring
, p
- namestring
,
3027 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3028 &objfile
->static_psymbols
,
3030 psymtab_language
, objfile
);
3033 /* Also a typedef with the same name. */
3034 add_psymbol_to_list (namestring
, p
- namestring
,
3035 VAR_NAMESPACE
, LOC_TYPEDEF
,
3036 &objfile
->static_psymbols
,
3038 psymtab_language
, objfile
);
3041 #if 0 /* OBSOLETE CFront */
3042 // OBSOLETE /* The semantics of C++ state that "struct foo { ... }"
3043 // OBSOLETE also defines a typedef for "foo". Unfortuantely, cfront
3044 // OBSOLETE never makes the typedef when translating from C++ to C.
3045 // OBSOLETE We make the typedef here so that "ptype foo" works as
3046 // OBSOLETE expected for cfront translated code. */
3047 // OBSOLETE else if (psymtab_language == language_cplus)
3049 // OBSOLETE /* Also a typedef with the same name. */
3050 // OBSOLETE add_psymbol_to_list (namestring, p - namestring,
3051 // OBSOLETE VAR_NAMESPACE, LOC_TYPEDEF,
3052 // OBSOLETE &objfile->static_psymbols,
3053 // OBSOLETE sh.value, 0,
3054 // OBSOLETE psymtab_language, objfile);
3056 #endif /* OBSOLETE CFront */
3060 if (p
!= namestring
) /* a name is there, not just :T... */
3062 add_psymbol_to_list (namestring
, p
- namestring
,
3063 VAR_NAMESPACE
, LOC_TYPEDEF
,
3064 &objfile
->static_psymbols
,
3066 psymtab_language
, objfile
);
3069 /* If this is an enumerated type, we need to
3070 add all the enum constants to the partial symbol
3071 table. This does not cover enums without names, e.g.
3072 "enum {a, b} c;" in C, but fortunately those are
3073 rare. There is no way for GDB to find those from the
3074 enum type without spending too much time on it. Thus
3075 to solve this problem, the compiler needs to put out the
3076 enum in a nameless type. GCC2 does this. */
3078 /* We are looking for something of the form
3079 <name> ":" ("t" | "T") [<number> "="] "e"
3080 {<constant> ":" <value> ","} ";". */
3082 /* Skip over the colon and the 't' or 'T'. */
3084 /* This type may be given a number. Also, numbers can come
3085 in pairs like (0,26). Skip over it. */
3086 while ((*p
>= '0' && *p
<= '9')
3087 || *p
== '(' || *p
== ',' || *p
== ')'
3093 /* The aix4 compiler emits extra crud before the members. */
3096 /* Skip over the type (?). */
3100 /* Skip over the colon. */
3104 /* We have found an enumerated type. */
3105 /* According to comments in read_enum_type
3106 a comma could end it instead of a semicolon.
3107 I don't know where that happens.
3109 while (*p
&& *p
!= ';' && *p
!= ',')
3113 /* Check for and handle cretinous dbx symbol name
3115 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3116 p
= next_symbol_text (objfile
);
3118 /* Point to the character after the name
3119 of the enum constant. */
3120 for (q
= p
; *q
&& *q
!= ':'; q
++)
3122 /* Note that the value doesn't matter for
3123 enum constants in psymtabs, just in symtabs. */
3124 add_psymbol_to_list (p
, q
- p
,
3125 VAR_NAMESPACE
, LOC_CONST
,
3126 &objfile
->static_psymbols
, 0,
3127 0, psymtab_language
, objfile
);
3128 /* Point past the name. */
3130 /* Skip over the value. */
3131 while (*p
&& *p
!= ',')
3133 /* Advance past the comma. */
3140 /* Constant, e.g. from "const" in Pascal. */
3141 add_psymbol_to_list (namestring
, p
- namestring
,
3142 VAR_NAMESPACE
, LOC_CONST
,
3143 &objfile
->static_psymbols
, sh
.value
,
3144 0, psymtab_language
, objfile
);
3150 int name_len
= p
- namestring
;
3151 char *name
= xmalloc (name_len
+ 1);
3152 memcpy (name
, namestring
, name_len
);
3153 name
[name_len
] = '\0';
3154 function_outside_compilation_unit_complaint (name
);
3157 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3158 add_psymbol_to_list (namestring
, p
- namestring
,
3159 VAR_NAMESPACE
, LOC_BLOCK
,
3160 &objfile
->static_psymbols
,
3162 psymtab_language
, objfile
);
3165 /* Global functions were ignored here, but now they
3166 are put into the global psymtab like one would expect.
3167 They're also in the minimal symbol table. */
3171 int name_len
= p
- namestring
;
3172 char *name
= xmalloc (name_len
+ 1);
3173 memcpy (name
, namestring
, name_len
);
3174 name
[name_len
] = '\0';
3175 function_outside_compilation_unit_complaint (name
);
3178 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3179 add_psymbol_to_list (namestring
, p
- namestring
,
3180 VAR_NAMESPACE
, LOC_BLOCK
,
3181 &objfile
->global_psymbols
,
3183 psymtab_language
, objfile
);
3186 /* Two things show up here (hopefully); static symbols of
3187 local scope (static used inside braces) or extensions
3188 of structure symbols. We can ignore both. */
3202 case '#': /* for symbol identification (used in live ranges) */
3203 #if 0 /* OBSOLETE CFront */
3204 // OBSOLETE /* added to support cfront stabs strings */
3205 // OBSOLETE case 'Z': /* for definition continuations */
3206 // OBSOLETE case 'P': /* for prototypes */
3207 #endif /* OBSOLETE CFront */
3211 /* It is a C++ nested symbol. We don't need to record it
3212 (I don't think); if we try to look up foo::bar::baz,
3213 then symbols for the symtab containing foo should get
3214 read in, I think. */
3215 /* Someone says sun cc puts out symbols like
3216 /foo/baz/maclib::/usr/local/bin/maclib,
3217 which would get here with a symbol type of ':'. */
3221 /* Unexpected symbol descriptor. The second and subsequent stabs
3222 of a continued stab can show up here. The question is
3223 whether they ever can mimic a normal stab--it would be
3224 nice if not, since we certainly don't want to spend the
3225 time searching to the end of every string looking for
3228 complaint (&symfile_complaints
,
3229 "unknown symbol descriptor `%c'", p
[1]);
3231 /* Ignore it; perhaps it is an extension that we don't
3240 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3241 /* Solaris 2 end of module, finish current partial
3242 symbol table. END_PSYMTAB will set
3243 pst->texthigh to the proper value, which is
3244 necessary if a module compiled without
3245 debugging info follows this module. */
3248 pst
= (struct partial_symtab
*) 0;
3250 dependencies_used
= 0;
3256 if (sh
.value
> save_pst
->texthigh
)
3257 save_pst
->texthigh
= sh
.value
;
3262 case N_SSYM
: /* Claim: Structure or union element.
3263 Hopefully, I can ignore this. */
3264 case N_ENTRY
: /* Alternate entry point; can ignore. */
3265 case N_MAIN
: /* Can definitely ignore this. */
3266 case N_CATCH
: /* These are GNU C++ extensions */
3267 case N_EHDECL
: /* that can safely be ignored here. */
3277 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3278 case N_DEFD
: /* GNU Modula-2 */
3279 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3281 case N_OBJ
: /* useless types from Solaris */
3283 /* These symbols aren't interesting; don't worry about them */
3288 /* If we haven't found it yet, ignore it. It's probably some
3289 new type we don't know about yet. */
3290 complaint (&symfile_complaints
, "unknown symbol type %s",
3291 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3295 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3298 /* end - Handle continuation */
3303 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3306 enum address_class
class;
3308 (*swap_sym_in
) (cur_bfd
,
3309 ((char *) debug_info
->external_sym
3310 + ((fh
->isymBase
+ cur_sdx
)
3311 * external_sym_size
)),
3314 if (ECOFF_IS_STAB (&sh
))
3320 /* Non absolute static symbols go into the minimal table. */
3321 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3322 || (sh
.index
== indexNil
3323 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3325 /* FIXME, premature? */
3330 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3336 /* The value of a stEnd symbol is the displacement from the
3337 corresponding start symbol value, do not relocate it. */
3339 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3346 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3350 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3361 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3362 mst_file_text
, NULL
,
3363 SECT_OFF_TEXT (objfile
), NULL
,
3369 /* Ignore all parameter symbol records. */
3370 if (sh
.index
>= hdr
->iauxMax
)
3372 /* Should not happen, but does when cross-compiling
3373 with the MIPS compiler. FIXME -- pull later. */
3374 index_complaint (name
);
3375 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3378 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3379 (debug_info
->external_aux
3383 if (new_sdx
<= cur_sdx
)
3385 /* This should not happen either... FIXME. */
3386 complaint (&symfile_complaints
,
3387 "bad proc end in aux found from symbol %s",
3389 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3392 /* For stProc symbol records, we need to check the
3393 storage class as well, as only (stProc, scText)
3394 entries represent "real" procedures - See the
3395 Compaq document titled "Object File / Symbol Table
3396 Format Specification" for more information. If the
3397 storage class is not scText, we discard the whole
3398 block of symbol records for this stProc. */
3399 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3402 /* Usually there is a local and a global stProc symbol
3403 for a function. This means that the function name
3404 has already been entered into the mimimal symbol table
3405 while processing the global symbols in pass 2 above.
3406 One notable exception is the PROGRAM name from
3407 f77 compiled executables, it is only put out as
3408 local stProc symbol, and a global MAIN__ stProc symbol
3409 points to it. It doesn't matter though, as gdb is
3410 still able to find the PROGRAM name via the partial
3411 symbol table, and the MAIN__ symbol via the minimal
3413 if (sh
.st
== stProc
)
3414 add_psymbol_to_list (name
, strlen (name
),
3415 VAR_NAMESPACE
, LOC_BLOCK
,
3416 &objfile
->global_psymbols
,
3417 0, sh
.value
, psymtab_language
, objfile
);
3419 add_psymbol_to_list (name
, strlen (name
),
3420 VAR_NAMESPACE
, LOC_BLOCK
,
3421 &objfile
->static_psymbols
,
3422 0, sh
.value
, psymtab_language
, objfile
);
3424 procaddr
= sh
.value
;
3427 (*swap_sym_in
) (cur_bfd
,
3428 ((char *) debug_info
->external_sym
3429 + ((fh
->isymBase
+ cur_sdx
- 1)
3430 * external_sym_size
)),
3435 /* Kludge for Irix 5.2 zero fh->adr. */
3437 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3438 pst
->textlow
= procaddr
;
3440 high
= procaddr
+ sh
.value
;
3441 if (high
> pst
->texthigh
)
3442 pst
->texthigh
= high
;
3445 case stStatic
: /* Variable */
3446 if (SC_IS_DATA (sh
.sc
))
3447 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3448 mst_file_data
, NULL
,
3449 SECT_OFF_DATA (objfile
),
3453 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3455 SECT_OFF_BSS (objfile
),
3461 case stIndirect
: /* Irix5 forward declaration */
3462 /* Skip forward declarations from Irix5 cc */
3465 case stTypedef
: /* Typedef */
3466 /* Skip typedefs for forward declarations and opaque
3467 structs from alpha and mips cc. */
3468 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3470 class = LOC_TYPEDEF
;
3473 case stConstant
: /* Constant decl */
3480 case stBlock
: /* { }, str, un, enum */
3481 /* Do not create a partial symbol for cc unnamed aggregates
3482 and gcc empty aggregates. */
3483 if ((sh
.sc
== scInfo
3484 || SC_IS_COMMON (sh
.sc
))
3486 && sh
.index
!= cur_sdx
+ 2)
3488 add_psymbol_to_list (name
, strlen (name
),
3489 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3490 &objfile
->static_psymbols
,
3492 psymtab_language
, objfile
);
3494 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3496 /* Skip over the block */
3498 if (new_sdx
<= cur_sdx
)
3500 /* This happens with the Ultrix kernel. */
3501 complaint (&symfile_complaints
,
3502 "bad aux index at block symbol %s", name
);
3503 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3508 case stFile
: /* File headers */
3509 case stLabel
: /* Labels */
3510 case stEnd
: /* Ends of files */
3513 case stLocal
: /* Local variables */
3514 /* Normally these are skipped because we skip over
3515 all blocks we see. However, these can occur
3516 as visible symbols in a .h file that contains code. */
3520 /* Both complaints are valid: one gives symbol name,
3521 the other the offending symbol type. */
3522 complaint (&symfile_complaints
, "unknown local symbol %s",
3524 complaint (&symfile_complaints
, "with type %d", sh
.st
);
3528 /* Use this gdb symbol */
3529 add_psymbol_to_list (name
, strlen (name
),
3530 VAR_NAMESPACE
, class,
3531 &objfile
->static_psymbols
,
3532 0, sh
.value
, psymtab_language
, objfile
);
3534 cur_sdx
++; /* Go to next file symbol */
3537 /* Now do enter the external symbols. */
3538 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3539 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3540 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3541 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3542 for (; --cur_sdx
>= 0; ext_ptr
++)
3544 enum address_class
class;
3549 if (ext_ptr
->ifd
!= f_idx
)
3550 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3551 psh
= &ext_ptr
->asym
;
3553 /* Do not add undefined symbols to the partial symbol table. */
3554 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3557 svalue
= psh
->value
;
3562 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3569 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3573 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3580 /* These are generated for static symbols in .o files,
3585 /* External procedure symbols have been entered
3586 into the minimal symbol table in pass 2 above.
3587 Ignore them, as parse_external will ignore them too. */
3593 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3594 /* Fall through, pretend it's global. */
3596 /* Global common symbols are resolved by the runtime loader,
3598 if (SC_IS_COMMON (psh
->sc
))
3604 name
= debug_info
->ssext
+ psh
->iss
;
3605 add_psymbol_to_list (name
, strlen (name
),
3606 VAR_NAMESPACE
, class,
3607 &objfile
->global_psymbols
,
3609 psymtab_language
, objfile
);
3613 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3614 empty and put on the free list. */
3615 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3616 psymtab_include_list
, includes_used
,
3617 -1, save_pst
->texthigh
,
3618 dependency_list
, dependencies_used
, textlow_not_set
);
3620 dependencies_used
= 0;
3622 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
3623 objfile
->ei
.entry_point
< save_pst
->texthigh
)
3625 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
3626 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
3629 /* The objfile has its functions reordered if this partial symbol
3630 table overlaps any other partial symbol table.
3631 We cannot assume a reordered objfile if a partial symbol table
3632 is contained within another partial symbol table, as partial symbol
3633 tables for include files with executable code are contained
3634 within the partial symbol table for the including source file,
3635 and we do not want to flag the objfile reordered for these cases.
3637 This strategy works well for Irix-5.2 shared libraries, but we
3638 might have to use a more elaborate (and slower) algorithm for
3640 save_pst
= fdr_to_pst
[f_idx
].pst
;
3641 if (save_pst
!= NULL
3642 && save_pst
->textlow
!= 0
3643 && !(objfile
->flags
& OBJF_REORDERED
))
3645 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3648 && save_pst
->textlow
>= pst
->textlow
3649 && save_pst
->textlow
< pst
->texthigh
3650 && save_pst
->texthigh
> pst
->texthigh
)
3652 objfile
->flags
|= OBJF_REORDERED
;
3659 /* Now scan the FDRs for dependencies */
3660 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3662 fh
= f_idx
+ debug_info
->fdr
;
3663 pst
= fdr_to_pst
[f_idx
].pst
;
3665 if (pst
== (struct partial_symtab
*) NULL
)
3668 /* This should catch stabs-in-ecoff. */
3672 /* Skip the first file indirect entry as it is a self dependency
3673 for source files or a reverse .h -> .c dependency for header files. */
3674 pst
->number_of_dependencies
= 0;
3676 ((struct partial_symtab
**)
3677 obstack_alloc (&objfile
->psymbol_obstack
,
3679 * sizeof (struct partial_symtab
*))));
3680 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3684 (*swap_rfd_in
) (cur_bfd
,
3685 ((char *) debug_info
->external_rfd
3686 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3688 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3690 complaint (&symfile_complaints
, "bad file number %ld", rh
);
3694 /* Skip self dependencies of header files. */
3698 /* Do not add to dependeny list if psymtab was empty. */
3699 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3701 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3705 /* Remove the dummy psymtab created for -O3 images above, if it is
3706 still empty, to enable the detection of stripped executables. */
3707 if (objfile
->psymtabs
->next
== NULL
3708 && objfile
->psymtabs
->number_of_dependencies
== 0
3709 && objfile
->psymtabs
->n_global_syms
== 0
3710 && objfile
->psymtabs
->n_static_syms
== 0)
3711 objfile
->psymtabs
= NULL
;
3712 do_cleanups (old_chain
);
3715 /* If the current psymbol has an enumerated type, we need to add
3716 all the the enum constants to the partial symbol table. */
3719 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3722 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3723 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3724 char *ext_sym
= ((char *) debug_info
->external_sym
3725 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3735 /* It is an enumerated type if the next symbol entry is a stMember
3736 and its auxiliary index is indexNil or its auxiliary entry
3737 is a plain btNil or btVoid.
3738 Alpha cc -migrate enums are recognized by a zero index and
3739 a zero symbol value.
3740 DU 4.0 cc enums are recognized by a member type of btEnum without
3741 qualifiers and a zero symbol value. */
3742 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3743 if (sh
.st
!= stMember
)
3746 if (sh
.index
== indexNil
3747 || (sh
.index
== 0 && svalue
== 0))
3749 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3750 &(debug_info
->external_aux
3751 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3753 if ((tir
.bt
!= btNil
3755 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3756 || tir
.tq0
!= tqNil
)
3768 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3769 if (sh
.st
!= stMember
)
3771 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3773 /* Note that the value doesn't matter for enum constants
3774 in psymtabs, just in symtabs. */
3775 add_psymbol_to_list (name
, strlen (name
),
3776 VAR_NAMESPACE
, LOC_CONST
,
3777 &objfile
->static_psymbols
, 0,
3778 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3779 ext_sym
+= external_sym_size
;
3783 /* Get the next symbol. OBJFILE is unused. */
3786 mdebug_next_symbol_text (struct objfile
*objfile
)
3791 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3792 ((char *) debug_info
->external_sym
3793 + ((cur_fdr
->isymBase
+ cur_sdx
)
3794 * debug_swap
->external_sym_size
)),
3796 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3799 /* Ancillary function to psymtab_to_symtab(). Does all the work
3800 for turning the partial symtab PST into a symtab, recurring
3801 first on all dependent psymtabs. The argument FILENAME is
3802 only passed so we can see in debug stack traces what file
3805 This function has a split personality, based on whether the
3806 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3807 The flow of control and even the memory allocation differs. FIXME. */
3810 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3812 bfd_size_type external_sym_size
;
3813 bfd_size_type external_pdr_size
;
3814 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3815 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3817 struct symtab
*st
= NULL
;
3819 struct linetable
*lines
;
3820 CORE_ADDR lowest_pdr_addr
= 0;
3821 int last_symtab_ended
= 0;
3827 /* Read in all partial symbtabs on which this one is dependent.
3828 NOTE that we do have circular dependencies, sigh. We solved
3829 that by setting pst->readin before this point. */
3831 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3832 if (!pst
->dependencies
[i
]->readin
)
3834 /* Inform about additional files to be read in. */
3837 fputs_filtered (" ", gdb_stdout
);
3839 fputs_filtered ("and ", gdb_stdout
);
3841 printf_filtered ("%s...",
3842 pst
->dependencies
[i
]->filename
);
3843 wrap_here (""); /* Flush output */
3844 gdb_flush (gdb_stdout
);
3846 /* We only pass the filename for debug purposes */
3847 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3848 pst
->dependencies
[i
]->filename
);
3851 /* Do nothing if this is a dummy psymtab. */
3853 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3854 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3857 /* Now read the symbols for this symtab */
3859 cur_bfd
= CUR_BFD (pst
);
3860 debug_swap
= DEBUG_SWAP (pst
);
3861 debug_info
= DEBUG_INFO (pst
);
3862 pending_list
= PENDING_LIST (pst
);
3863 external_sym_size
= debug_swap
->external_sym_size
;
3864 external_pdr_size
= debug_swap
->external_pdr_size
;
3865 swap_sym_in
= debug_swap
->swap_sym_in
;
3866 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3867 current_objfile
= pst
->objfile
;
3868 cur_fd
= FDR_IDX (pst
);
3869 fh
= ((cur_fd
== -1)
3871 : debug_info
->fdr
+ cur_fd
);
3874 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3875 processing_gcc_compilation
= 0;
3876 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3880 (*swap_sym_in
) (cur_bfd
,
3881 ((char *) debug_info
->external_sym
3882 + (fh
->isymBase
+ 1) * external_sym_size
),
3884 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3887 /* We indicate that this is a GCC compilation so that certain
3888 features will be enabled in stabsread/dbxread. */
3889 processing_gcc_compilation
= 2;
3893 if (processing_gcc_compilation
!= 0)
3896 /* This symbol table contains stabs-in-ecoff entries. */
3898 /* Parse local symbols first */
3900 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3902 current_objfile
= NULL
;
3905 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3911 (*swap_sym_in
) (cur_bfd
,
3912 (((char *) debug_info
->external_sym
)
3913 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3915 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3917 /* XXX This is a hack. It will go away! */
3918 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3920 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3922 /* We should never get non N_STAB symbols here, but they
3923 should be harmless, so keep process_one_symbol from
3924 complaining about them. */
3925 if (type_code
& N_STAB
)
3927 /* If we found a trailing N_SO with no name, process
3928 it here instead of in process_one_symbol, so we
3929 can keep a handle to its symtab. The symtab
3930 would otherwise be ended twice, once in
3931 process_one_symbol, and once after this loop. */
3932 if (type_code
== N_SO
3934 && previous_stab_code
!= (unsigned char) N_SO
3937 valu
+= ANOFFSET (pst
->section_offsets
,
3938 SECT_OFF_TEXT (pst
->objfile
));
3939 previous_stab_code
= N_SO
;
3940 st
= end_symtab (valu
, pst
->objfile
,
3941 SECT_OFF_TEXT (pst
->objfile
));
3943 last_symtab_ended
= 1;
3947 last_symtab_ended
= 0;
3948 process_one_symbol (type_code
, 0, valu
, name
,
3949 pst
->section_offsets
, pst
->objfile
);
3952 /* Similarly a hack. */
3953 else if (name
[0] == '#')
3955 process_one_symbol (N_SLINE
, 0, valu
, name
,
3956 pst
->section_offsets
, pst
->objfile
);
3958 if (type_code
== N_FUN
)
3960 /* Make up special symbol to contain
3961 procedure specific info */
3962 struct mips_extra_func_info
*e
=
3963 ((struct mips_extra_func_info
*)
3964 obstack_alloc (¤t_objfile
->symbol_obstack
,
3965 sizeof (struct mips_extra_func_info
)));
3966 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3968 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3969 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3970 SYMBOL_CLASS (s
) = LOC_CONST
;
3971 SYMBOL_TYPE (s
) = mdebug_type_void
;
3972 SYMBOL_VALUE (s
) = (long) e
;
3973 e
->pdr
.framereg
= -1;
3974 add_symbol_to_list (s
, &local_symbols
);
3977 else if (sh
.st
== stLabel
)
3979 if (sh
.index
== indexNil
)
3981 /* This is what the gcc2_compiled and __gnu_compiled_*
3982 show up as. So don't complain. */
3987 /* Handle encoded stab line number. */
3988 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3989 record_line (current_subfile
, sh
.index
, valu
);
3992 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3993 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3994 /* These are generated by gcc-2.x, do not complain */
3997 complaint (&symfile_complaints
, "unknown stabs symbol %s", name
);
4000 if (! last_symtab_ended
)
4002 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
4006 /* Sort the symbol table now, we are done adding symbols to it.
4007 We must do this before parse_procedure calls lookup_symbol. */
4008 sort_symtab_syms (st
);
4010 /* There used to be a call to sort_blocks here, but this should not
4011 be necessary for stabs symtabs. And as sort_blocks modifies the
4012 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4013 it did the wrong thing if the first procedure in a file was
4014 generated via asm statements. */
4016 /* Fill in procedure info next. */
4020 struct cleanup
*old_chain
;
4026 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4027 old_chain
= make_cleanup (xfree
, pr_block
);
4029 pdr_ptr
= ((char *) debug_info
->external_pdr
4030 + fh
->ipdFirst
* external_pdr_size
);
4031 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4035 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4037 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4039 /* Determine lowest PDR address, the PDRs are not always
4041 if (pdr_in
== pr_block
)
4042 lowest_pdr_addr
= pdr_in
->adr
;
4043 else if (pdr_in
->adr
< lowest_pdr_addr
)
4044 lowest_pdr_addr
= pdr_in
->adr
;
4048 pdr_in_end
= pdr_in
+ fh
->cpd
;
4049 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4050 parse_procedure (pdr_in
, st
, pst
);
4052 do_cleanups (old_chain
);
4057 /* This symbol table contains ordinary ecoff entries. */
4063 /* How many symbols will we need */
4064 /* FIXME, this does not count enum values. */
4065 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4069 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4073 f_max
+= fh
->csym
+ fh
->cpd
;
4074 maxlines
= 2 * fh
->cline
;
4075 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4077 /* The proper language was already determined when building
4078 the psymtab, use it. */
4079 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4082 psymtab_language
= st
->language
;
4084 lines
= LINETABLE (st
);
4086 /* Get a new lexical context */
4088 push_parse_stack ();
4089 top_stack
->cur_st
= st
;
4090 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4092 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4093 BLOCK_END (top_stack
->cur_block
) = 0;
4094 top_stack
->blocktype
= stFile
;
4095 top_stack
->maxsyms
= 2 * f_max
;
4096 top_stack
->cur_type
= 0;
4097 top_stack
->procadr
= 0;
4098 top_stack
->numargs
= 0;
4099 found_ecoff_debugging_info
= 0;
4106 /* Parse local symbols first */
4107 sym_ptr
= ((char *) debug_info
->external_sym
4108 + fh
->isymBase
* external_sym_size
);
4109 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4110 while (sym_ptr
< sym_end
)
4115 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4116 c
= parse_symbol (&sh
,
4117 debug_info
->external_aux
+ fh
->iauxBase
,
4118 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4119 sym_ptr
+= c
* external_sym_size
;
4122 /* Linenumbers. At the end, check if we can save memory.
4123 parse_lines has to look ahead an arbitrary number of PDR
4124 structures, so we swap them all first. */
4128 struct cleanup
*old_chain
;
4134 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4136 old_chain
= make_cleanup (xfree
, pr_block
);
4138 pdr_ptr
= ((char *) debug_info
->external_pdr
4139 + fh
->ipdFirst
* external_pdr_size
);
4140 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4144 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4146 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4148 /* Determine lowest PDR address, the PDRs are not always
4150 if (pdr_in
== pr_block
)
4151 lowest_pdr_addr
= pdr_in
->adr
;
4152 else if (pdr_in
->adr
< lowest_pdr_addr
)
4153 lowest_pdr_addr
= pdr_in
->adr
;
4156 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4157 if (lines
->nitems
< fh
->cline
)
4158 lines
= shrink_linetable (lines
);
4160 /* Fill in procedure info next. */
4162 pdr_in_end
= pdr_in
+ fh
->cpd
;
4163 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4164 parse_procedure (pdr_in
, 0, pst
);
4166 do_cleanups (old_chain
);
4170 LINETABLE (st
) = lines
;
4172 /* .. and our share of externals.
4173 XXX use the global list to speed up things here. how?
4174 FIXME, Maybe quit once we have found the right number of ext's? */
4175 top_stack
->cur_st
= st
;
4176 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4178 top_stack
->blocktype
= stFile
;
4180 = (debug_info
->symbolic_header
.isymMax
4181 + debug_info
->symbolic_header
.ipdMax
4182 + debug_info
->symbolic_header
.iextMax
);
4184 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4185 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4186 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4188 /* If there are undefined symbols, tell the user.
4189 The alpha has an undefined symbol for every symbol that is
4190 from a shared library, so tell the user only if verbose is on. */
4191 if (info_verbose
&& n_undef_symbols
)
4193 printf_filtered ("File %s contains %d unresolved references:",
4194 st
->filename
, n_undef_symbols
);
4195 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4196 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4197 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4204 /* Sort the symbol table now, we are done adding symbols to it. */
4205 sort_symtab_syms (st
);
4210 /* Now link the psymtab and the symtab. */
4213 current_objfile
= NULL
;
4216 /* Ancillary parsing procedures. */
4218 /* Return 1 if the symbol pointed to by SH has a cross reference
4219 to an opaque aggregate type, else 0. */
4222 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4229 if (sh
->index
== indexNil
)
4232 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4233 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4234 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4238 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4239 if (rn
->rfd
== 0xfff)
4240 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4248 /* Lookup the type at relative index RN. Return it in TPP
4249 if found and in any event come up with its name PNAME.
4250 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4251 Return value says how many aux symbols we ate. */
4254 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. */
4255 char **pname
, int bigend
, char *sym_name
)
4264 struct mdebug_pending
*pend
;
4266 *tpp
= (struct type
*) NULL
;
4268 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4270 /* Escape index means 'the next one' */
4271 if (rn
->rfd
== 0xfff)
4274 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4281 /* mips cc uses a rf of -1 for opaque struct definitions.
4282 Set TYPE_FLAG_STUB for these types so that check_typedef will
4283 resolve them if the struct gets defined in another compilation unit. */
4286 *pname
= "<undefined>";
4287 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4291 /* mips cc uses an escaped rn->index of 0 for struct return types
4292 of procedures that were compiled without -g. These will always remain
4294 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4296 *pname
= "<undefined>";
4300 /* Find the relative file descriptor and the symbol in it. */
4301 fh
= get_rfd (fd
, rf
);
4302 xref_fd
= fh
- debug_info
->fdr
;
4304 if (rn
->index
>= fh
->csym
)
4306 /* File indirect entry is corrupt. */
4307 *pname
= "<illegal>";
4308 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4312 /* If we have processed this symbol then we left a forwarding
4313 pointer to the type in the pending list. If not, we`ll put
4314 it in a list of pending types, to be processed later when
4315 the file will be. In any event, we collect the name for the
4318 esh
= ((char *) debug_info
->external_sym
4319 + ((fh
->isymBase
+ rn
->index
)
4320 * debug_swap
->external_sym_size
));
4321 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4323 /* Make sure that this type of cross reference can be handled. */
4324 if ((sh
.sc
!= scInfo
4325 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4326 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4327 && sh
.st
!= stEnum
))
4328 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4330 /* File indirect entry is corrupt. */
4331 *pname
= "<illegal>";
4332 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4336 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4338 pend
= is_pending_symbol (fh
, esh
);
4343 /* We have not yet seen this type. */
4345 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4349 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4351 a) forward declarations of structs/unions/enums which are not
4352 defined in this compilation unit.
4353 For these the type will be void. This is a bad design decision
4354 as cross referencing across compilation units is impossible
4355 due to the missing name.
4356 b) forward declarations of structs/unions/enums/typedefs which
4357 are defined later in this file or in another file in the same
4358 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4359 Simply cross reference those again to get the true type.
4360 The forward references are not entered in the pending list and
4361 in the symbol table. */
4363 (*debug_swap
->swap_tir_in
) (bigend
,
4364 &(debug_info
->external_aux
4365 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4367 if (tir
.tq0
!= tqNil
)
4368 complaint (&symfile_complaints
,
4369 "illegal tq0 in forward typedef for %s", sym_name
);
4373 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4375 *pname
= "<undefined>";
4382 (debug_info
->external_aux
4383 + fh
->iauxBase
+ sh
.index
+ 1),
4384 tpp
, type_code
, pname
,
4385 fh
->fBigendian
, sym_name
);
4389 /* Follow a forward typedef. This might recursively
4390 call cross_ref till we get a non typedef'ed type.
4391 FIXME: This is not correct behaviour, but gdb currently
4392 cannot handle typedefs without type copying. Type
4393 copying is impossible as we might have mutual forward
4394 references between two files and the copied type would not
4395 get filled in when we later parse its definition. */
4396 *tpp
= parse_type (xref_fd
,
4397 debug_info
->external_aux
+ fh
->iauxBase
,
4401 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4402 add_pending (fh
, esh
, *tpp
);
4406 complaint (&symfile_complaints
,
4407 "illegal bt %d in forward typedef for %s", tir
.bt
,
4409 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4415 else if (sh
.st
== stTypedef
)
4417 /* Parse the type for a normal typedef. This might recursively call
4418 cross_ref till we get a non typedef'ed type.
4419 FIXME: This is not correct behaviour, but gdb currently
4420 cannot handle typedefs without type copying. But type copying is
4421 impossible as we might have mutual forward references between
4422 two files and the copied type would not get filled in when
4423 we later parse its definition. */
4424 *tpp
= parse_type (xref_fd
,
4425 debug_info
->external_aux
+ fh
->iauxBase
,
4429 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4433 /* Cross reference to a struct/union/enum which is defined
4434 in another file in the same compilation unit but that file
4435 has not been parsed yet.
4436 Initialize the type only, it will be filled in when
4437 it's definition is parsed. */
4438 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4440 add_pending (fh
, esh
, *tpp
);
4443 /* We used one auxent normally, two if we got a "next one" rf. */
4448 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4449 keeping the symtab sorted */
4451 static struct symbol
*
4452 mylookup_symbol (char *name
, register struct block
*block
,
4453 namespace_enum
namespace, enum address_class
class)
4459 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4461 if (SYMBOL_NAME (sym
)[0] == inc
4462 && SYMBOL_NAMESPACE (sym
) == namespace
4463 && SYMBOL_CLASS (sym
) == class
4464 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4468 block
= BLOCK_SUPERBLOCK (block
);
4470 return mylookup_symbol (name
, block
, namespace, class);
4475 /* Add a new symbol S to a block B.
4476 Infrequently, we will need to reallocate the block to make it bigger.
4477 We only detect this case when adding to top_stack->cur_block, since
4478 that's the only time we know how big the block is. FIXME. */
4481 add_symbol (struct symbol
*s
, struct block
*b
)
4483 int nsyms
= BLOCK_NSYMS (b
)++;
4484 struct block
*origb
;
4485 struct parse_stack
*stackp
;
4487 if (b
== top_stack
->cur_block
&&
4488 nsyms
>= top_stack
->maxsyms
)
4490 complaint (&symfile_complaints
, "block containing %s overfilled",
4492 /* In this case shrink_block is actually grow_block, since
4493 BLOCK_NSYMS(b) is larger than its current size. */
4495 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4497 /* Now run through the stack replacing pointers to the
4498 original block. shrink_block has already done this
4499 for the blockvector and BLOCK_FUNCTION. */
4500 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4502 if (stackp
->cur_block
== origb
)
4504 stackp
->cur_block
= b
;
4505 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4509 BLOCK_SYM (b
, nsyms
) = s
;
4512 /* Add a new block B to a symtab S */
4515 add_block (struct block
*b
, struct symtab
*s
)
4517 struct blockvector
*bv
= BLOCKVECTOR (s
);
4519 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4520 (sizeof (struct blockvector
)
4521 + BLOCKVECTOR_NBLOCKS (bv
)
4522 * sizeof (bv
->block
)));
4523 if (bv
!= BLOCKVECTOR (s
))
4524 BLOCKVECTOR (s
) = bv
;
4526 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4529 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4530 MIPS' linenumber encoding might need more than one byte
4531 to describe it, LAST is used to detect these continuation lines.
4533 Combining lines with the same line number seems like a bad idea.
4534 E.g: There could be a line number entry with the same line number after the
4535 prologue and GDB should not ignore it (this is a better way to find
4536 a prologue than mips_skip_prologue).
4537 But due to the compressed line table format there are line number entries
4538 for the same line which are needed to bridge the gap to the next
4539 line number entry. These entries have a bogus address info with them
4540 and we are unable to tell them from intended duplicate line number
4542 This is another reason why -ggdb debugging format is preferable. */
4545 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4547 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4548 Change them to something sensible. */
4552 last
= -2; /* make sure we record first line */
4554 if (last
== lineno
) /* skip continuation lines */
4557 lt
->item
[lt
->nitems
].line
= lineno
;
4558 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4562 /* Sorting and reordering procedures */
4564 /* Blocks with a smaller low bound should come first */
4567 compare_blocks (const void *arg1
, const void *arg2
)
4569 register int addr_diff
;
4570 struct block
**b1
= (struct block
**) arg1
;
4571 struct block
**b2
= (struct block
**) arg2
;
4573 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4575 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4579 /* Sort the blocks of a symtab S.
4580 Reorder the blocks in the blockvector by code-address,
4581 as required by some MI search routines */
4584 sort_blocks (struct symtab
*s
)
4586 struct blockvector
*bv
= BLOCKVECTOR (s
);
4588 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4591 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4592 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4593 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4594 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4598 * This is very unfortunate: normally all functions are compiled in
4599 * the order they are found, but if the file is compiled -O3 things
4600 * are very different. It would be nice to find a reliable test
4601 * to detect -O3 images in advance.
4603 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4604 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4605 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4606 sizeof (struct block
*),
4610 register CORE_ADDR high
= 0;
4611 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4613 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4614 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4615 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4616 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4619 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4620 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4622 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4623 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4624 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4625 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4629 /* Constructor/restructor/destructor procedures */
4631 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4632 MAXSYMS and linenumbers MAXLINES we'll put in it */
4634 static struct symtab
*
4635 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4637 struct symtab
*s
= allocate_symtab (name
, objfile
);
4639 LINETABLE (s
) = new_linetable (maxlines
);
4641 /* All symtabs must have at least two blocks */
4642 BLOCKVECTOR (s
) = new_bvect (2);
4643 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4644 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4645 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4646 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4648 s
->free_code
= free_linetable
;
4649 s
->debugformat
= obsavestring ("ECOFF", 5,
4650 &objfile
->symbol_obstack
);
4654 /* Allocate a new partial_symtab NAME */
4656 static struct partial_symtab
*
4657 new_psymtab (char *name
, struct objfile
*objfile
)
4659 struct partial_symtab
*psymtab
;
4661 psymtab
= allocate_psymtab (name
, objfile
);
4662 psymtab
->section_offsets
= objfile
->section_offsets
;
4664 /* Keep a backpointer to the file's symbols */
4666 psymtab
->read_symtab_private
= ((char *)
4667 obstack_alloc (&objfile
->psymbol_obstack
,
4668 sizeof (struct symloc
)));
4669 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4670 CUR_BFD (psymtab
) = cur_bfd
;
4671 DEBUG_SWAP (psymtab
) = debug_swap
;
4672 DEBUG_INFO (psymtab
) = debug_info
;
4673 PENDING_LIST (psymtab
) = pending_list
;
4675 /* The way to turn this into a symtab is to call... */
4676 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4681 /* Allocate a linetable array of the given SIZE. Since the struct
4682 already includes one item, we subtract one when calculating the
4683 proper size to allocate. */
4685 static struct linetable
*
4686 new_linetable (int size
)
4688 struct linetable
*l
;
4690 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4691 l
= (struct linetable
*) xmalloc (size
);
4696 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4697 I am not so sure about the 3.4 ones.
4699 Since the struct linetable already includes one item, we subtract one when
4700 calculating the proper size to allocate. */
4702 static struct linetable
*
4703 shrink_linetable (struct linetable
*lt
)
4706 return (struct linetable
*) xrealloc ((void *) lt
,
4707 (sizeof (struct linetable
)
4709 * sizeof (lt
->item
))));
4712 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4714 static struct blockvector
*
4715 new_bvect (int nblocks
)
4717 struct blockvector
*bv
;
4720 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4721 bv
= (struct blockvector
*) xzalloc (size
);
4723 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4728 /* Allocate and zero a new block of MAXSYMS symbols */
4730 static struct block
*
4731 new_block (int maxsyms
)
4733 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4735 return (struct block
*) xzalloc (size
);
4738 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4739 Shrink_block can also be used by add_symbol to grow a block. */
4741 static struct block
*
4742 shrink_block (struct block
*b
, struct symtab
*s
)
4745 struct blockvector
*bv
= BLOCKVECTOR (s
);
4748 /* Just reallocate it and fix references to the old one */
4750 new = (struct block
*) xrealloc ((void *) b
,
4751 (sizeof (struct block
)
4752 + ((BLOCK_NSYMS (b
) - 1)
4753 * sizeof (struct symbol
*))));
4755 /* FIXME: Not worth hashing this block as it's built. */
4756 /* All callers should have created the block with new_block (), which
4757 would mean it was not previously hashed. Make sure. */
4758 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4760 /* Should chase pointers to old one. Fortunately, that`s just
4761 the block`s function and inferior blocks */
4762 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4763 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4764 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4765 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4766 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4767 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4768 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4772 /* Create a new symbol with printname NAME */
4774 static struct symbol
*
4775 new_symbol (char *name
)
4777 struct symbol
*s
= ((struct symbol
*)
4778 obstack_alloc (¤t_objfile
->symbol_obstack
,
4779 sizeof (struct symbol
)));
4781 memset (s
, 0, sizeof (*s
));
4782 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4783 ¤t_objfile
->symbol_obstack
);
4784 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4785 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4789 /* Create a new type with printname NAME */
4791 static struct type
*
4792 new_type (char *name
)
4796 t
= alloc_type (current_objfile
);
4797 TYPE_NAME (t
) = name
;
4798 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4802 /* Read ECOFF debugging information from a BFD section. This is
4803 called from elfread.c. It parses the section into a
4804 ecoff_debug_info struct, and then lets the rest of the file handle
4808 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4809 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4811 bfd
*abfd
= objfile
->obfd
;
4812 struct ecoff_debug_info
*info
;
4814 info
= ((struct ecoff_debug_info
*)
4815 obstack_alloc (&objfile
->psymbol_obstack
,
4816 sizeof (struct ecoff_debug_info
)));
4818 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4819 error ("Error reading ECOFF debugging information: %s",
4820 bfd_errmsg (bfd_get_error ()));
4822 mdebug_build_psymtabs (objfile
, swap
, info
);
4826 /* Things used for calling functions in the inferior.
4827 These functions are exported to our companion
4828 mips-tdep.c file and are here because they play
4829 with the symbol-table explicitly. */
4831 /* Sigtramp: make sure we have all the necessary information
4832 about the signal trampoline code. Since the official code
4833 from MIPS does not do so, we make up that information ourselves.
4834 If they fix the library (unlikely) this code will neutralize itself. */
4836 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4837 here because it calls functions defined in this file, but perhaps
4838 this could be handled in a better way. Only compile it in when
4839 tm-mips.h is included. */
4844 fixup_sigtramp (void)
4848 struct block
*b
, *b0
= NULL
;
4850 sigtramp_address
= -1;
4852 /* We have to handle the following cases here:
4853 a) The Mips library has a sigtramp label within sigvec.
4854 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4855 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4858 b0
= SYMBOL_BLOCK_VALUE (s
);
4859 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4863 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4864 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4867 /* But maybe this program uses its own version of sigvec */
4871 /* Did we or MIPSco fix the library ? */
4872 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4874 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4875 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4879 sigtramp_address
= SYMBOL_VALUE (s
);
4880 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4882 /* But what symtab does it live in ? */
4883 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4886 * Ok, there goes the fix: turn it into a procedure, with all the
4887 * needed info. Note we make it a nested procedure of sigvec,
4888 * which is the way the (assembly) code is actually written.
4890 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4891 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4892 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4894 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4896 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4898 SYMBOL_BLOCK_VALUE (s
) = b
;
4899 BLOCK_START (b
) = sigtramp_address
;
4900 BLOCK_END (b
) = sigtramp_end
;
4901 BLOCK_FUNCTION (b
) = s
;
4902 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4906 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4908 struct mips_extra_func_info
*e
=
4909 ((struct mips_extra_func_info
*)
4910 xzalloc (sizeof (struct mips_extra_func_info
)));
4912 e
->numargs
= 0; /* the kernel thinks otherwise */
4913 e
->pdr
.frameoffset
= 32;
4914 e
->pdr
.framereg
= SP_REGNUM
;
4915 /* Note that setting pcreg is no longer strictly necessary as
4916 mips_frame_saved_pc is now aware of signal handler frames. */
4917 e
->pdr
.pcreg
= PC_REGNUM
;
4918 e
->pdr
.regmask
= -2;
4919 /* Offset to saved r31, in the sigtramp case the saved registers
4920 are above the frame in the sigcontext.
4921 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4922 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4923 and 32 * 4 bytes for the floating point registers. */
4924 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4925 e
->pdr
.fregmask
= -1;
4926 /* Offset to saved f30 (first saved *double* register). */
4927 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4928 e
->pdr
.isym
= (long) s
;
4929 e
->pdr
.adr
= sigtramp_address
;
4931 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4932 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4933 SYMBOL_VALUE (s
) = (long) e
;
4934 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4935 SYMBOL_CLASS (s
) = LOC_CONST
;
4936 SYMBOL_TYPE (s
) = mdebug_type_void
;
4937 current_objfile
= NULL
;
4940 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4943 #endif /* TM_MIPS_H */
4946 _initialize_mdebugread (void)
4949 init_type (TYPE_CODE_VOID
, 1,
4951 "void", (struct objfile
*) NULL
);
4953 init_type (TYPE_CODE_INT
, 1,
4955 "char", (struct objfile
*) NULL
);
4956 mdebug_type_unsigned_char
=
4957 init_type (TYPE_CODE_INT
, 1,
4959 "unsigned char", (struct objfile
*) NULL
);
4961 init_type (TYPE_CODE_INT
, 2,
4963 "short", (struct objfile
*) NULL
);
4964 mdebug_type_unsigned_short
=
4965 init_type (TYPE_CODE_INT
, 2,
4967 "unsigned short", (struct objfile
*) NULL
);
4968 mdebug_type_int_32
=
4969 init_type (TYPE_CODE_INT
, 4,
4971 "int", (struct objfile
*) NULL
);
4972 mdebug_type_unsigned_int_32
=
4973 init_type (TYPE_CODE_INT
, 4,
4975 "unsigned int", (struct objfile
*) NULL
);
4976 mdebug_type_int_64
=
4977 init_type (TYPE_CODE_INT
, 8,
4979 "int", (struct objfile
*) NULL
);
4980 mdebug_type_unsigned_int_64
=
4981 init_type (TYPE_CODE_INT
, 8,
4983 "unsigned int", (struct objfile
*) NULL
);
4984 mdebug_type_long_32
=
4985 init_type (TYPE_CODE_INT
, 4,
4987 "long", (struct objfile
*) NULL
);
4988 mdebug_type_unsigned_long_32
=
4989 init_type (TYPE_CODE_INT
, 4,
4991 "unsigned long", (struct objfile
*) NULL
);
4992 mdebug_type_long_64
=
4993 init_type (TYPE_CODE_INT
, 8,
4995 "long", (struct objfile
*) NULL
);
4996 mdebug_type_unsigned_long_64
=
4997 init_type (TYPE_CODE_INT
, 8,
4999 "unsigned long", (struct objfile
*) NULL
);
5000 mdebug_type_long_long_64
=
5001 init_type (TYPE_CODE_INT
, 8,
5003 "long long", (struct objfile
*) NULL
);
5004 mdebug_type_unsigned_long_long_64
=
5005 init_type (TYPE_CODE_INT
, 8,
5007 "unsigned long long", (struct objfile
*) NULL
);
5008 mdebug_type_adr_32
=
5009 init_type (TYPE_CODE_PTR
, 4,
5011 "adr_32", (struct objfile
*) NULL
);
5012 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
5013 mdebug_type_adr_64
=
5014 init_type (TYPE_CODE_PTR
, 8,
5016 "adr_64", (struct objfile
*) NULL
);
5017 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
5019 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
5021 "float", (struct objfile
*) NULL
);
5022 mdebug_type_double
=
5023 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5025 "double", (struct objfile
*) NULL
);
5026 mdebug_type_complex
=
5027 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
5029 "complex", (struct objfile
*) NULL
);
5030 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
5031 mdebug_type_double_complex
=
5032 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5034 "double complex", (struct objfile
*) NULL
);
5035 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
5037 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5039 mdebug_type_string
=
5040 init_type (TYPE_CODE_STRING
,
5041 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
5043 (struct objfile
*) NULL
);
5045 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5046 good? Would we be better off with TYPE_CODE_ERROR? Should
5047 TYPE_CODE_ERROR print things in hex if it knows the size? */
5048 mdebug_type_fixed_dec
=
5049 init_type (TYPE_CODE_INT
,
5050 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
5052 (struct objfile
*) NULL
);
5054 mdebug_type_float_dec
=
5055 init_type (TYPE_CODE_ERROR
,
5056 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5057 0, "floating decimal",
5058 (struct objfile
*) NULL
);
5060 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5061 "<function, no debug info>", NULL
);
5062 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5063 nodebug_var_symbol_type
=
5064 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5065 "<variable, no debug info>", NULL
);