1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002
4 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
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 /* Make sure this is a "real" procedure. Otherwise, skip it. */
755 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
757 char *ext_tsym
= ext_sh
;
758 int keep_counting
= 1;
761 while (keep_counting
)
763 ext_tsym
+= external_sym_size
;
764 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
774 complaint (&symfile_complaints
,
775 "unknown symbol type 0x%x", sh
->st
);
781 s
= new_symbol (name
);
782 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
783 SYMBOL_CLASS (s
) = LOC_BLOCK
;
784 /* Type of the return value */
785 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
789 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
790 if (STREQ (name
, "malloc") && TYPE_CODE (t
) == TYPE_CODE_VOID
)
792 /* I don't know why, but, at least under Alpha GNU/Linux,
793 when linking against a malloc without debugging
794 symbols, its read as a function returning void---this
795 is bad because it means we cannot call functions with
796 string arguments interactively; i.e., "call
797 printf("howdy\n")" would fail with the error message
798 "program has no memory available". To avoid this, we
799 patch up the type and make it void*
800 instead. (davidm@azstarnet.com)
802 t
= make_pointer_type (t
, NULL
);
805 b
= top_stack
->cur_block
;
806 if (sh
->st
== stProc
)
808 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
809 /* The next test should normally be true, but provides a
810 hook for nested functions (which we don't want to make
812 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
813 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
814 /* Irix 5 sometimes has duplicate names for the same
815 function. We want to add such names up at the global
816 level, not as a nested function. */
817 else if (sh
->value
== top_stack
->procadr
)
818 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
822 /* Make a type for the procedure itself */
823 SYMBOL_TYPE (s
) = lookup_function_type (t
);
825 /* Create and enter a new lexical context */
826 b
= new_block (top_stack
->maxsyms
);
827 SYMBOL_BLOCK_VALUE (s
) = b
;
828 BLOCK_FUNCTION (b
) = s
;
829 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
830 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
831 add_block (b
, top_stack
->cur_st
);
833 /* Not if we only have partial info */
834 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
838 top_stack
->cur_block
= b
;
839 top_stack
->blocktype
= sh
->st
;
840 top_stack
->cur_type
= SYMBOL_TYPE (s
);
841 top_stack
->cur_field
= -1;
842 top_stack
->procadr
= sh
->value
;
843 top_stack
->numargs
= 0;
846 /* Beginning of code for structure, union, and enum definitions.
847 They all share a common set of local variables, defined here. */
849 enum type_code type_code
;
855 case stStruct
: /* Start a block defining a struct type */
856 type_code
= TYPE_CODE_STRUCT
;
857 goto structured_common
;
859 case stUnion
: /* Start a block defining a union type */
860 type_code
= TYPE_CODE_UNION
;
861 goto structured_common
;
863 case stEnum
: /* Start a block defining an enum type */
864 type_code
= TYPE_CODE_ENUM
;
865 goto structured_common
;
867 case stBlock
: /* Either a lexical block, or some type */
868 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
869 goto case_stBlock_code
; /* Lexical block */
871 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
873 /* Common code for handling struct, union, enum, and/or as-yet-
874 unknown-type blocks of info about structured data. `type_code'
875 has been set to the proper TYPE_CODE, if we know it. */
877 found_ecoff_debugging_info
= 1;
879 top_stack
->blocktype
= stBlock
;
881 /* First count the number of fields and the highest value. */
884 for (ext_tsym
= ext_sh
+ external_sym_size
;
886 ext_tsym
+= external_sym_size
)
890 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
895 /* C++ encodes class types as structures where there the
896 methods are encoded as stProc. The scope of stProc
897 symbols also ends with stEnd, thus creating a risk of
898 taking the wrong stEnd symbol record as the end of
899 the current struct, which would cause GDB to undercount
900 the real number of fields in this struct. To make sure
901 we really reached the right stEnd symbol record, we
902 check the associated name, and match it against the
903 struct name. Since method names are mangled while
904 the class name is not, there is no risk of having a
905 method whose name is identical to the class name
906 (in particular constructor method names are different
907 from the class name). There is therefore no risk that
908 this check stops the count on the StEnd of a method. */
909 if (strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
915 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
917 /* If the type of the member is Nil (or Void),
918 without qualifiers, assume the tag is an
920 Alpha cc -migrate enums are recognized by a zero
921 index and a zero symbol value.
922 DU 4.0 cc enums are recognized by a member type of
923 btEnum without qualifiers and a zero symbol value. */
924 if (tsym
.index
== indexNil
925 || (tsym
.index
== 0 && sh
->value
== 0))
926 type_code
= TYPE_CODE_ENUM
;
929 (*debug_swap
->swap_tir_in
) (bigend
,
930 &ax
[tsym
.index
].a_ti
,
932 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
933 || (tir
.bt
== btEnum
&& sh
->value
== 0))
935 type_code
= TYPE_CODE_ENUM
;
939 if (tsym
.value
> max_value
)
940 max_value
= tsym
.value
;
949 /* This is a no-op; is it trying to tell us something
950 we should be checking? */
951 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
955 /* This is something like a struct within a
956 struct. Skip over the fields of the inner
957 struct. The -1 is because the for loop will
958 increment ext_tsym. */
959 ext_tsym
= ((char *) debug_info
->external_sym
960 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
961 * external_sym_size
));
967 /* mips cc puts out a typedef for struct x if it is not yet
968 defined when it encounters
969 struct y { struct x *xp; };
974 /* Irix5 cc puts out a stIndirect for struct x if it is not
975 yet defined when it encounters
976 struct y { struct x *xp; };
981 complaint (&symfile_complaints
,
982 "declaration block contains unhandled symbol type %d",
988 /* In an stBlock, there is no way to distinguish structs,
989 unions, and enums at this point. This is a bug in the
990 original design (that has been fixed with the recent
991 addition of the stStruct, stUnion, and stEnum symbol
992 types.) The way you can tell is if/when you see a variable
993 or field of that type. In that case the variable's type
994 (in the AUX table) says if the type is struct, union, or
995 enum, and points back to the stBlock here. So you can
996 patch the tag kind up later - but only if there actually is
997 a variable or field of that type.
999 So until we know for sure, we will guess at this point.
1001 If the first member has index==indexNil or a void type,
1002 assume we have an enumeration.
1003 Otherwise, if there is more than one member, and all
1004 the members have offset 0, assume we have a union.
1005 Otherwise, assume we have a struct.
1007 The heuristic could guess wrong in the case of of an
1008 enumeration with no members or a union with one (or zero)
1009 members, or when all except the last field of a struct have
1010 width zero. These are uncommon and/or illegal situations,
1011 and in any case guessing wrong probably doesn't matter
1014 But if we later do find out we were wrong, we fixup the tag
1015 kind. Members of an enumeration must be handled
1016 differently from struct/union fields, and that is harder to
1017 patch up, but luckily we shouldn't need to. (If there are
1018 any enumeration members, we can tell for sure it's an enum
1021 if (type_code
== TYPE_CODE_UNDEF
)
1023 if (nfields
> 1 && max_value
== 0)
1024 type_code
= TYPE_CODE_UNION
;
1026 type_code
= TYPE_CODE_STRUCT
;
1029 /* Create a new type or use the pending type. */
1030 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1031 if (pend
== (struct mdebug_pending
*) NULL
)
1033 t
= new_type (NULL
);
1034 add_pending (cur_fdr
, ext_sh
, t
);
1039 /* Do not set the tag name if it is a compiler generated tag name
1040 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1041 Alpha cc puts out an sh->iss of zero for those. */
1042 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1043 TYPE_TAG_NAME (t
) = NULL
;
1045 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1048 TYPE_CODE (t
) = type_code
;
1049 TYPE_LENGTH (t
) = sh
->value
;
1050 TYPE_NFIELDS (t
) = nfields
;
1051 TYPE_FIELDS (t
) = f
= ((struct field
*)
1053 nfields
* sizeof (struct field
)));
1055 if (type_code
== TYPE_CODE_ENUM
)
1057 int unsigned_enum
= 1;
1059 /* This is a non-empty enum. */
1061 /* DEC c89 has the number of enumerators in the sh.value field,
1062 not the type length, so we have to compensate for that
1063 incompatibility quirk.
1064 This might do the wrong thing for an enum with one or two
1065 enumerators and gcc -gcoff -fshort-enums, but these cases
1066 are hopefully rare enough.
1067 Alpha cc -migrate has a sh.value field of zero, we adjust
1069 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1070 || TYPE_LENGTH (t
) == 0)
1071 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1072 for (ext_tsym
= ext_sh
+ external_sym_size
;
1074 ext_tsym
+= external_sym_size
)
1077 struct symbol
*enum_sym
;
1079 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1081 if (tsym
.st
!= stMember
)
1084 FIELD_BITPOS (*f
) = tsym
.value
;
1085 FIELD_TYPE (*f
) = t
;
1086 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1087 FIELD_BITSIZE (*f
) = 0;
1088 FIELD_STATIC_KIND (*f
) = 0;
1090 enum_sym
= ((struct symbol
*)
1091 obstack_alloc (¤t_objfile
->symbol_obstack
,
1092 sizeof (struct symbol
)));
1093 memset (enum_sym
, 0, sizeof (struct symbol
));
1094 SYMBOL_NAME (enum_sym
) =
1095 obsavestring (f
->name
, strlen (f
->name
),
1096 ¤t_objfile
->symbol_obstack
);
1097 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1098 SYMBOL_TYPE (enum_sym
) = t
;
1099 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1100 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1101 if (SYMBOL_VALUE (enum_sym
) < 0)
1103 add_symbol (enum_sym
, top_stack
->cur_block
);
1105 /* Skip the stMembers that we've handled. */
1110 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1112 /* make this the current type */
1113 top_stack
->cur_type
= t
;
1114 top_stack
->cur_field
= 0;
1116 /* Do not create a symbol for alpha cc unnamed structs. */
1120 /* gcc puts out an empty struct for an opaque struct definitions,
1121 do not create a symbol for it either. */
1122 if (TYPE_NFIELDS (t
) == 0)
1124 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1128 s
= new_symbol (name
);
1129 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1130 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1131 SYMBOL_VALUE (s
) = 0;
1132 SYMBOL_TYPE (s
) = t
;
1133 add_symbol (s
, top_stack
->cur_block
);
1136 /* End of local variables shared by struct, union, enum, and
1137 block (as yet unknown struct/union/enum) processing. */
1141 found_ecoff_debugging_info
= 1;
1142 /* beginnning of (code) block. Value of symbol
1143 is the displacement from procedure start */
1144 push_parse_stack ();
1146 /* Do not start a new block if this is the outermost block of a
1147 procedure. This allows the LOC_BLOCK symbol to point to the
1148 block with the local variables, so funcname::var works. */
1149 if (top_stack
->blocktype
== stProc
1150 || top_stack
->blocktype
== stStaticProc
)
1152 top_stack
->blocktype
= stNil
;
1156 top_stack
->blocktype
= stBlock
;
1157 b
= new_block (top_stack
->maxsyms
);
1158 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1159 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1160 top_stack
->cur_block
= b
;
1161 add_block (b
, top_stack
->cur_st
);
1164 case stEnd
: /* end (of anything) */
1165 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1167 /* Finished with type */
1168 top_stack
->cur_type
= 0;
1170 else if (sh
->sc
== scText
&&
1171 (top_stack
->blocktype
== stProc
||
1172 top_stack
->blocktype
== stStaticProc
))
1174 /* Finished with procedure */
1175 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1176 struct mips_extra_func_info
*e
;
1178 struct type
*ftype
= top_stack
->cur_type
;
1181 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1183 /* Make up special symbol to contain procedure specific info */
1184 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1185 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1186 SYMBOL_CLASS (s
) = LOC_CONST
;
1187 SYMBOL_TYPE (s
) = mdebug_type_void
;
1188 e
= ((struct mips_extra_func_info
*)
1189 obstack_alloc (¤t_objfile
->symbol_obstack
,
1190 sizeof (struct mips_extra_func_info
)));
1191 memset (e
, 0, sizeof (struct mips_extra_func_info
));
1192 SYMBOL_VALUE (s
) = (long) e
;
1193 e
->numargs
= top_stack
->numargs
;
1194 e
->pdr
.framereg
= -1;
1195 add_symbol (s
, top_stack
->cur_block
);
1197 /* Reallocate symbols, saving memory */
1198 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1200 /* f77 emits proc-level with address bounds==[0,0],
1201 So look for such child blocks, and patch them. */
1202 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1204 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1205 if (BLOCK_SUPERBLOCK (b_bad
) == b
1206 && BLOCK_START (b_bad
) == top_stack
->procadr
1207 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1209 BLOCK_START (b_bad
) = BLOCK_START (b
);
1210 BLOCK_END (b_bad
) = BLOCK_END (b
);
1214 if (TYPE_NFIELDS (ftype
) <= 0)
1216 /* No parameter type information is recorded with the function's
1217 type. Set that from the type of the parameter symbols. */
1218 int nparams
= top_stack
->numargs
;
1224 TYPE_NFIELDS (ftype
) = nparams
;
1225 TYPE_FIELDS (ftype
) = (struct field
*)
1226 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1228 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1230 sym
= BLOCK_SYM (b
, i
);
1231 switch (SYMBOL_CLASS (sym
))
1236 case LOC_REGPARM_ADDR
:
1237 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1238 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1248 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1250 /* End of (code) block. The value of the symbol is the
1251 displacement from the procedure`s start address of the
1252 end of this block. */
1253 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1254 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1256 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1258 /* End of outermost block. Pop parse stack and ignore. The
1259 following stEnd of stProc will take care of the block. */
1262 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1264 /* End of file. Pop parse stack and ignore. Higher
1265 level code deals with this. */
1269 complaint (&symfile_complaints
,
1270 "stEnd with storage class %d not handled", sh
->sc
);
1272 pop_parse_stack (); /* restore previous lexical context */
1275 case stMember
: /* member of struct or union */
1276 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1277 FIELD_NAME (*f
) = name
;
1278 FIELD_BITPOS (*f
) = sh
->value
;
1280 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1281 FIELD_BITSIZE (*f
) = bitsize
;
1282 FIELD_STATIC_KIND (*f
) = 0;
1285 case stIndirect
: /* forward declaration on Irix5 */
1286 /* Forward declarations from Irix5 cc are handled by cross_ref,
1290 case stTypedef
: /* type definition */
1291 found_ecoff_debugging_info
= 1;
1293 /* Typedefs for forward declarations and opaque structs from alpha cc
1294 are handled by cross_ref, skip them. */
1298 /* Parse the type or use the pending type. */
1299 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1300 if (pend
== (struct mdebug_pending
*) NULL
)
1302 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1303 add_pending (cur_fdr
, ext_sh
, t
);
1308 /* mips cc puts out a typedef with the name of the struct for forward
1309 declarations. These should not go into the symbol table and
1310 TYPE_NAME should not be set for them.
1311 They can't be distinguished from an intentional typedef to
1312 the same name however:
1314 struct x { int ix; int jx; };
1318 struct xx {int ixx; int jxx; };
1319 generates a cross referencing stTypedef for x and xx.
1320 The user visible effect of this is that the type of a pointer
1321 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1322 The problem is fixed with alpha cc and Irix5 cc. */
1324 /* However if the typedef cross references to an opaque aggregate, it
1325 is safe to omit it from the symbol table. */
1327 if (has_opaque_xref (cur_fdr
, sh
))
1329 s
= new_symbol (name
);
1330 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1331 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1332 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1333 SYMBOL_TYPE (s
) = t
;
1334 add_symbol (s
, top_stack
->cur_block
);
1336 /* Incomplete definitions of structs should not get a name. */
1337 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1338 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1339 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1340 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1342 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1343 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1345 /* If we are giving a name to a type such as "pointer to
1346 foo" or "function returning foo", we better not set
1347 the TYPE_NAME. If the program contains "typedef char
1348 *caddr_t;", we don't want all variables of type char
1349 * to print as caddr_t. This is not just a
1350 consequence of GDB's type management; CC and GCC (at
1351 least through version 2.4) both output variables of
1352 either type char * or caddr_t with the type
1353 refering to the stTypedef symbol for caddr_t. If a future
1354 compiler cleans this up it GDB is not ready for it
1355 yet, but if it becomes ready we somehow need to
1356 disable this check (without breaking the PCC/GCC2.4
1361 Fortunately, this check seems not to be necessary
1362 for anything except pointers or functions. */
1365 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1369 case stFile
: /* file name */
1370 push_parse_stack ();
1371 top_stack
->blocktype
= sh
->st
;
1374 /* I`ve never seen these for C */
1376 break; /* register relocation */
1378 break; /* forwarding address */
1380 break; /* constant */
1382 complaint (&symfile_complaints
, "unknown symbol type 0x%x", sh
->st
);
1389 /* Parse the type information provided in the raw AX entries for
1390 the symbol SH. Return the bitfield size in BS, in case.
1391 We must byte-swap the AX entries before we use them; BIGEND says whether
1392 they are big-endian or little-endian (from fh->fBigendian). */
1394 static struct type
*
1395 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1396 int bigend
, char *sym_name
)
1398 /* Null entries in this map are treated specially */
1399 static struct type
**map_bt
[] =
1401 &mdebug_type_void
, /* btNil */
1402 &mdebug_type_adr_32
, /* btAdr */
1403 &mdebug_type_char
, /* btChar */
1404 &mdebug_type_unsigned_char
, /* btUChar */
1405 &mdebug_type_short
, /* btShort */
1406 &mdebug_type_unsigned_short
, /* btUShort */
1407 &mdebug_type_int_32
, /* btInt */
1408 &mdebug_type_unsigned_int_32
, /* btUInt */
1409 &mdebug_type_long_32
, /* btLong */
1410 &mdebug_type_unsigned_long_32
, /* btULong */
1411 &mdebug_type_float
, /* btFloat */
1412 &mdebug_type_double
, /* btDouble */
1419 &mdebug_type_complex
, /* btComplex */
1420 &mdebug_type_double_complex
, /* btDComplex */
1422 &mdebug_type_fixed_dec
, /* btFixedDec */
1423 &mdebug_type_float_dec
, /* btFloatDec */
1424 &mdebug_type_string
, /* btString */
1427 &mdebug_type_void
, /* btVoid */
1428 0, /* DEC C++: Pointer to member */
1429 0, /* DEC C++: Virtual function table */
1430 0, /* DEC C++: Class (Record) */
1431 &mdebug_type_long_64
, /* btLong64 */
1432 &mdebug_type_unsigned_long_64
, /* btULong64 */
1433 &mdebug_type_long_long_64
, /* btLongLong64 */
1434 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1435 &mdebug_type_adr_64
, /* btAdr64 */
1436 &mdebug_type_int_64
, /* btInt64 */
1437 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1441 struct type
*tp
= 0;
1442 enum type_code type_code
= TYPE_CODE_UNDEF
;
1444 /* Handle undefined types, they have indexNil. */
1445 if (aux_index
== indexNil
)
1446 return mdebug_type_int
;
1448 /* Handle corrupt aux indices. */
1449 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1451 index_complaint (sym_name
);
1452 return mdebug_type_int
;
1456 /* Use aux as a type information record, map its basic type. */
1457 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1458 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1460 basic_type_complaint (t
->bt
, sym_name
);
1461 return mdebug_type_int
;
1465 tp
= *map_bt
[t
->bt
];
1470 /* Cannot use builtin types -- build our own */
1474 type_code
= TYPE_CODE_STRUCT
;
1477 type_code
= TYPE_CODE_UNION
;
1480 type_code
= TYPE_CODE_ENUM
;
1483 type_code
= TYPE_CODE_RANGE
;
1486 type_code
= TYPE_CODE_SET
;
1489 /* alpha cc -migrate uses this for typedefs. The true type will
1490 be obtained by crossreferencing below. */
1491 type_code
= TYPE_CODE_ERROR
;
1494 /* alpha cc uses this for typedefs. The true type will be
1495 obtained by crossreferencing below. */
1496 type_code
= TYPE_CODE_ERROR
;
1499 basic_type_complaint (t
->bt
, sym_name
);
1500 return mdebug_type_int
;
1504 /* Move on to next aux */
1509 int width
= AUX_GET_WIDTH (bigend
, ax
);
1511 /* Inhibit core dumps with some cfront generated objects that
1513 if (bs
== (int *) NULL
)
1515 /* Alpha cc -migrate encodes char and unsigned char types
1516 as short and unsigned short types with a field width of 8.
1517 Enum types also have a field width which we ignore for now. */
1518 if (t
->bt
== btShort
&& width
== 8)
1519 tp
= mdebug_type_char
;
1520 else if (t
->bt
== btUShort
&& width
== 8)
1521 tp
= mdebug_type_unsigned_char
;
1522 else if (t
->bt
== btEnum
)
1525 complaint (&symfile_complaints
, "can't handle TIR fBitfield for %s",
1533 /* A btIndirect entry cross references to an aux entry containing
1535 if (t
->bt
== btIndirect
)
1542 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1544 if (rn
->rfd
== 0xfff)
1546 rf
= AUX_GET_ISYM (bigend
, ax
);
1554 complaint (&symfile_complaints
,
1555 "unable to cross ref btIndirect for %s", sym_name
);
1556 return mdebug_type_int
;
1558 xref_fh
= get_rfd (fd
, rf
);
1559 xref_fd
= xref_fh
- debug_info
->fdr
;
1560 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1561 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1564 /* All these types really point to some (common) MIPS type
1565 definition, and only the type-qualifiers fully identify
1566 them. We'll make the same effort at sharing. */
1567 if (t
->bt
== btStruct
||
1571 /* btSet (I think) implies that the name is a tag name, not a typedef
1572 name. This apparently is a MIPS extension for C sets. */
1577 /* Try to cross reference this type, build new type on failure. */
1578 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1579 if (tp
== (struct type
*) NULL
)
1580 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1582 /* DEC c89 produces cross references to qualified aggregate types,
1583 dereference them. */
1584 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1585 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1586 tp
= TYPE_TARGET_TYPE (tp
);
1588 /* Make sure that TYPE_CODE(tp) has an expected type code.
1589 Any type may be returned from cross_ref if file indirect entries
1591 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1592 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1593 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1595 unexpected_type_code_complaint (sym_name
);
1600 /* Usually, TYPE_CODE(tp) is already type_code. The main
1601 exception is if we guessed wrong re struct/union/enum.
1602 But for struct vs. union a wrong guess is harmless, so
1603 don't complain(). */
1604 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1605 && type_code
!= TYPE_CODE_ENUM
)
1606 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1607 && type_code
== TYPE_CODE_ENUM
))
1609 bad_tag_guess_complaint (sym_name
);
1612 if (TYPE_CODE (tp
) != type_code
)
1614 TYPE_CODE (tp
) = type_code
;
1617 /* Do not set the tag name if it is a compiler generated tag name
1618 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1619 if (name
[0] == '.' || name
[0] == '\0')
1620 TYPE_TAG_NAME (tp
) = NULL
;
1621 else if (TYPE_TAG_NAME (tp
) == NULL
1622 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1623 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1624 ¤t_objfile
->type_obstack
);
1628 /* All these types really point to some (common) MIPS type
1629 definition, and only the type-qualifiers fully identify
1630 them. We'll make the same effort at sharing.
1631 FIXME: We are not doing any guessing on range types. */
1632 if (t
->bt
== btRange
)
1636 /* Try to cross reference this type, build new type on failure. */
1637 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1638 if (tp
== (struct type
*) NULL
)
1639 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1641 /* Make sure that TYPE_CODE(tp) has an expected type code.
1642 Any type may be returned from cross_ref if file indirect entries
1644 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1646 unexpected_type_code_complaint (sym_name
);
1650 /* Usually, TYPE_CODE(tp) is already type_code. The main
1651 exception is if we guessed wrong re struct/union/enum. */
1652 if (TYPE_CODE (tp
) != type_code
)
1654 bad_tag_guess_complaint (sym_name
);
1655 TYPE_CODE (tp
) = type_code
;
1657 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1658 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1659 ¤t_objfile
->type_obstack
);
1662 if (t
->bt
== btTypedef
)
1666 /* Try to cross reference this type, it should succeed. */
1667 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1668 if (tp
== (struct type
*) NULL
)
1670 complaint (&symfile_complaints
,
1671 "unable to cross ref btTypedef for %s", sym_name
);
1672 tp
= mdebug_type_int
;
1676 /* Deal with range types */
1677 if (t
->bt
== btRange
)
1679 TYPE_NFIELDS (tp
) = 2;
1680 TYPE_FIELDS (tp
) = ((struct field
*)
1681 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1682 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1683 ¤t_objfile
->type_obstack
);
1684 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1686 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1687 ¤t_objfile
->type_obstack
);
1688 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1692 /* Parse all the type qualifiers now. If there are more
1693 than 6 the game will continue in the next aux */
1697 #define PARSE_TQ(tq) \
1698 if (t->tq != tqNil) \
1699 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1711 /* mips cc 2.x and gcc never put out continued aux entries. */
1715 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1719 /* Complain for illegal continuations due to corrupt aux entries. */
1721 complaint (&symfile_complaints
, "illegal TIR continued for %s", sym_name
);
1726 /* Make up a complex type from a basic one. Type is passed by
1727 reference in TPP and side-effected as necessary. The type
1728 qualifier TQ says how to handle the aux symbols at AX for
1729 the symbol SX we are currently analyzing. BIGEND says whether
1730 aux symbols are big-endian or little-endian.
1731 Returns the number of aux symbols we parsed. */
1734 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1740 /* Used in array processing */
1751 t
= lookup_pointer_type (*tpp
);
1756 t
= lookup_function_type (*tpp
);
1763 /* Determine and record the domain type (type of index) */
1764 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1770 rf
= AUX_GET_ISYM (bigend
, ax
);
1773 fh
= get_rfd (fd
, rf
);
1775 indx
= parse_type (fh
- debug_info
->fdr
,
1776 debug_info
->external_aux
+ fh
->iauxBase
,
1777 id
, (int *) NULL
, bigend
, sym_name
);
1779 /* The bounds type should be an integer type, but might be anything
1780 else due to corrupt aux entries. */
1781 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1783 complaint (&symfile_complaints
,
1784 "illegal array index type for %s, assuming int", sym_name
);
1785 indx
= mdebug_type_int
;
1788 /* Get the bounds, and create the array type. */
1790 lower
= AUX_GET_DNLOW (bigend
, ax
);
1792 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1794 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1796 range
= create_range_type ((struct type
*) NULL
, indx
,
1799 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1801 /* We used to fill in the supplied array element bitsize
1802 here if the TYPE_LENGTH of the target type was zero.
1803 This happens for a `pointer to an array of anonymous structs',
1804 but in this case the array element bitsize is also zero,
1805 so nothing is gained.
1806 And we used to check the TYPE_LENGTH of the target type against
1807 the supplied array element bitsize.
1808 gcc causes a mismatch for `pointer to array of object',
1809 since the sdb directives it uses do not have a way of
1810 specifying the bitsize, but it does no harm (the
1811 TYPE_LENGTH should be correct) and we should be able to
1812 ignore the erroneous bitsize from the auxiliary entry safely.
1813 dbx seems to ignore it too. */
1815 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1817 if (TYPE_LENGTH (*tpp
) == 0)
1819 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1826 /* Volatile -- currently ignored */
1830 /* Const -- currently ignored */
1834 complaint (&symfile_complaints
, "unknown type qualifier 0x%x", tq
);
1840 /* Parse a procedure descriptor record PR. Note that the procedure is
1841 parsed _after_ the local symbols, now we just insert the extra
1842 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1843 already been placed in the procedure's main block. Note also that
1844 images that have been partially stripped (ld -x) have been deprived
1845 of local symbols, and we have to cope with them here. FIRST_OFF is
1846 the offset of the first procedure for this FDR; we adjust the
1847 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1848 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1849 in question, or NULL to use top_stack->cur_block. */
1851 static void parse_procedure (PDR
*, struct symtab
*, struct partial_symtab
*);
1854 parse_procedure (PDR
*pr
, struct symtab
*search_symtab
,
1855 struct partial_symtab
*pst
)
1857 struct symbol
*s
, *i
;
1859 struct mips_extra_func_info
*e
;
1862 /* Simple rule to find files linked "-x" */
1863 if (cur_fdr
->rss
== -1)
1867 /* Static procedure at address pr->adr. Sigh. */
1868 /* FIXME-32x64. assuming pr->adr fits in long. */
1869 complaint (&symfile_complaints
,
1870 "can't handle PDR for static proc at 0x%lx",
1871 (unsigned long) pr
->adr
);
1879 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1880 ((char *) debug_info
->external_ext
1882 * debug_swap
->external_ext_size
)),
1884 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1892 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1893 ((char *) debug_info
->external_sym
1894 + ((cur_fdr
->isymBase
+ pr
->isym
)
1895 * debug_swap
->external_sym_size
)),
1897 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1900 if (search_symtab
!= NULL
)
1903 /* This loses both in the case mentioned (want a static, find a global),
1904 but also if we are looking up a non-mangled name which happens to
1905 match the name of a mangled function. */
1906 /* We have to save the cur_fdr across the call to lookup_symbol.
1907 If the pdr is for a static function and if a global function with
1908 the same name exists, lookup_symbol will eventually read in the symtab
1909 for the global function and clobber cur_fdr. */
1910 FDR
*save_cur_fdr
= cur_fdr
;
1911 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1912 cur_fdr
= save_cur_fdr
;
1916 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1922 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1923 VAR_NAMESPACE
, LOC_BLOCK
);
1927 b
= SYMBOL_BLOCK_VALUE (s
);
1931 complaint (&symfile_complaints
, "PDR for %s, but no symbol", sh_name
);
1935 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1936 s
= new_symbol (sh_name
);
1937 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1938 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1939 /* Donno its type, hope int is ok */
1940 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1941 add_symbol (s
, top_stack
->cur_block
);
1942 /* Wont have symbols for this one */
1944 SYMBOL_BLOCK_VALUE (s
) = b
;
1945 BLOCK_FUNCTION (b
) = s
;
1946 BLOCK_START (b
) = pr
->adr
;
1947 /* BOUND used to be the end of procedure's text, but the
1948 argument is no longer passed in. */
1949 BLOCK_END (b
) = bound
;
1950 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1951 add_block (b
, top_stack
->cur_st
);
1955 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1959 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1961 e
->pdr
.isym
= (long) s
;
1963 /* GDB expects the absolute function start address for the
1964 procedure descriptor in e->pdr.adr.
1965 As the address in the procedure descriptor is usually relative,
1966 we would have to relocate e->pdr.adr with cur_fdr->adr and
1967 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1968 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1969 in shared libraries on some systems, and on other systems
1970 e->pdr.adr is sometimes offset by a bogus value.
1971 To work around these problems, we replace e->pdr.adr with
1972 the start address of the function. */
1973 e
->pdr
.adr
= BLOCK_START (b
);
1975 /* Correct incorrect setjmp procedure descriptor from the library
1976 to make backtrace through setjmp work. */
1977 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1979 complaint (&symfile_complaints
, "fixing bad setjmp PDR from libc");
1980 e
->pdr
.pcreg
= RA_REGNUM
;
1981 e
->pdr
.regmask
= 0x80000000;
1982 e
->pdr
.regoffset
= -4;
1986 /* It would be reasonable that functions that have been compiled
1987 without debugging info have a btNil type for their return value,
1988 and functions that are void and are compiled with debugging info
1990 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1991 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1993 The glevel field in cur_fdr could be used to determine the presence
1994 of debugging info, but GCC doesn't always pass the -g switch settings
1995 to the assembler and GAS doesn't set the glevel field from the -g switch
1997 To work around these problems, the return value type of a TYPE_CODE_VOID
1998 function is adjusted accordingly if no debugging info was found in the
1999 compilation unit. */
2001 if (processing_gcc_compilation
== 0
2002 && found_ecoff_debugging_info
== 0
2003 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2004 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2007 /* Relocate the extra function info pointed to by the symbol table. */
2010 ecoff_relocate_efi (struct symbol
*sym
, CORE_ADDR delta
)
2012 struct mips_extra_func_info
*e
;
2014 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2016 e
->pdr
.adr
+= delta
;
2019 /* Parse the external symbol ES. Just call parse_symbol() after
2020 making sure we know where the aux are for it.
2021 BIGEND says whether aux entries are big-endian or little-endian.
2023 This routine clobbers top_stack->cur_block and ->cur_st. */
2025 static void parse_external (EXTR
*, int, struct section_offsets
*,
2029 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2030 struct objfile
*objfile
)
2034 if (es
->ifd
!= ifdNil
)
2037 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2038 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2042 cur_fdr
= debug_info
->fdr
;
2046 /* Reading .o files */
2047 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2050 switch (es
->asym
.st
)
2053 /* These are generated for static symbols in .o files,
2074 /* FIXME: Turn this into a complaint? */
2076 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2077 what
, debug_info
->ssext
+ es
->asym
.iss
,
2078 fdr_name (cur_fdr
));
2082 switch (es
->asym
.st
)
2086 /* There is no need to parse the external procedure symbols.
2087 If they are from objects compiled without -g, their index will
2088 be indexNil, and the symbol definition from the minimal symbol
2089 is preferrable (yielding a function returning int instead of int).
2090 If the index points to a local procedure symbol, the local
2091 symbol already provides the correct type.
2092 Note that the index of the external procedure symbol points
2093 to the local procedure symbol in the local symbol table, and
2094 _not_ to the auxiliary symbol info. */
2098 /* Global common symbols are resolved by the runtime loader,
2100 if (SC_IS_COMMON (es
->asym
.sc
))
2103 /* Note that the case of a symbol with indexNil must be handled
2104 anyways by parse_symbol(). */
2105 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
, objfile
);
2112 /* Parse the line number info for file descriptor FH into
2113 GDB's linetable LT. MIPS' encoding requires a little bit
2114 of magic to get things out. Note also that MIPS' line
2115 numbers can go back and forth, apparently we can live
2116 with that and do not need to reorder our linetables */
2118 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2119 struct partial_symtab
*, CORE_ADDR
);
2122 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2123 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2125 unsigned char *base
;
2127 int delta
, count
, lineno
= 0;
2129 if (fh
->cbLine
== 0)
2132 /* Scan by procedure descriptors */
2134 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2138 unsigned char *halt
;
2140 /* No code for this one */
2141 if (pr
->iline
== ilineNil
||
2142 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2145 /* Determine start and end address of compressed line bytes for
2147 base
= debug_info
->line
+ fh
->cbLineOffset
;
2148 if (j
!= (fh
->cpd
- 1))
2149 halt
= base
+ pr
[1].cbLineOffset
;
2151 halt
= base
+ fh
->cbLine
;
2152 base
+= pr
->cbLineOffset
;
2154 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2156 l
= adr
>> 2; /* in words */
2157 for (lineno
= pr
->lnLow
; base
< halt
;)
2159 count
= *base
& 0x0f;
2160 delta
= *base
++ >> 4;
2165 delta
= (base
[0] << 8) | base
[1];
2166 if (delta
>= 0x8000)
2170 lineno
+= delta
; /* first delta is 0 */
2172 /* Complain if the line table overflows. Could happen
2173 with corrupt binaries. */
2174 if (lt
->nitems
>= maxlines
)
2176 complaint (&symfile_complaints
,
2177 "guessed size of linetable for %s incorrectly",
2181 k
= add_line (lt
, lineno
, l
, k
);
2188 function_outside_compilation_unit_complaint (const char *arg1
)
2190 complaint (&symfile_complaints
,
2191 "function `%s' appears to be defined outside of all compilation units",
2195 /* Master parsing procedure for first-pass reading of file symbols
2196 into a partial_symtab. */
2199 parse_partial_symbols (struct objfile
*objfile
)
2201 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2202 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2203 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2204 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2205 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2206 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2208 HDRR
*hdr
= &debug_info
->symbolic_header
;
2209 /* Running pointers */
2214 register EXTR
*ext_in
;
2217 struct partial_symtab
*pst
;
2218 int textlow_not_set
= 1;
2219 int past_first_source_file
= 0;
2221 /* List of current psymtab's include files */
2222 char **psymtab_include_list
;
2223 int includes_allocated
;
2226 struct pst_map
*fdr_to_pst
;
2227 /* Index within current psymtab dependency list */
2228 struct partial_symtab
**dependency_list
;
2229 int dependencies_used
, dependencies_allocated
;
2230 struct cleanup
*old_chain
;
2232 enum language prev_language
;
2233 asection
*text_sect
;
2234 int relocatable
= 0;
2236 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2237 the shared libraries are prelinked at a high memory address.
2238 We have to adjust the start address of the object file for this case,
2239 by setting it to the start address of the first procedure in the file.
2240 But we should do no adjustments if we are debugging a .o file, where
2241 the text section (and fh->adr) really starts at zero. */
2242 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2243 if (text_sect
!= NULL
2244 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2247 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2248 sizeof (EXTR
) * hdr
->iextMax
);
2250 includes_allocated
= 30;
2252 psymtab_include_list
= (char **) alloca (includes_allocated
*
2254 next_symbol_text_func
= mdebug_next_symbol_text
;
2256 dependencies_allocated
= 30;
2257 dependencies_used
= 0;
2259 (struct partial_symtab
**) alloca (dependencies_allocated
*
2260 sizeof (struct partial_symtab
*));
2262 last_source_file
= NULL
;
2267 * Only parse the Local and External symbols, and the Relative FDR.
2268 * Fixup enough of the loader symtab to be able to use it.
2269 * Allocate space only for the file's portions we need to
2274 max_glevel
= MIN_GLEVEL
;
2276 /* Allocate the map FDR -> PST.
2277 Minor hack: -O3 images might claim some global data belongs
2278 to FDR -1. We`ll go along with that */
2279 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2280 old_chain
= make_cleanup (xfree
, fdr_to_pst
);
2283 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2284 fdr_to_pst
[-1].pst
= pst
;
2288 /* Allocate the global pending list. */
2290 ((struct mdebug_pending
**)
2291 obstack_alloc (&objfile
->psymbol_obstack
,
2292 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2293 memset (pending_list
, 0,
2294 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2296 /* Pass 0 over external syms: swap them in. */
2297 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2298 make_cleanup (xfree
, ext_block
);
2300 ext_out
= (char *) debug_info
->external_ext
;
2301 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2303 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2304 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2306 /* Pass 1 over external syms: Presize and partition the list */
2308 ext_in_end
= ext_in
+ hdr
->iextMax
;
2309 for (; ext_in
< ext_in_end
; ext_in
++)
2311 /* See calls to complain below. */
2312 if (ext_in
->ifd
>= -1
2313 && ext_in
->ifd
< hdr
->ifdMax
2314 && ext_in
->asym
.iss
>= 0
2315 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2316 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2319 /* Pass 1.5 over files: partition out global symbol space */
2321 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2323 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2324 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2325 fdr_to_pst
[f_idx
].n_globals
= 0;
2330 For ECOFF in ELF, we skip the creation of the minimal symbols.
2331 The ECOFF symbols should be a subset of the Elf symbols, and the
2332 section information of the elf symbols will be more accurate.
2333 FIXME! What about Irix 5's native linker?
2335 By default, Elf sections which don't exist in ECOFF
2336 get put in ECOFF's absolute section by the gnu linker.
2337 Since absolute sections don't get relocated, we
2338 end up calculating an address different from that of
2339 the symbol's minimal symbol (created earlier from the
2342 To fix this, either :
2343 1) don't create the duplicate symbol
2344 (assumes ECOFF symtab is a subset of the ELF symtab;
2345 assumes no side-effects result from ignoring ECOFF symbol)
2346 2) create it, only if lookup for existing symbol in ELF's minimal
2349 assumes no side-effects result from ignoring ECOFF symbol)
2350 3) create it, but lookup ELF's minimal symbol and use it's section
2351 during relocation, then modify "uniqify" phase to merge and
2352 eliminate the duplicate symbol
2353 (highly inefficient)
2355 I've implemented #1 here...
2356 Skip the creation of the minimal symbols based on the ECOFF
2359 /* Pass 2 over external syms: fill in external symbols */
2361 ext_in_end
= ext_in
+ hdr
->iextMax
;
2362 for (; ext_in
< ext_in_end
; ext_in
++)
2364 enum minimal_symbol_type ms_type
= mst_text
;
2365 CORE_ADDR svalue
= ext_in
->asym
.value
;
2367 /* The Irix 5 native tools seem to sometimes generate bogus
2368 external symbols. */
2369 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2371 complaint (&symfile_complaints
,
2372 "bad ifd for external symbol: %d (max %ld)", ext_in
->ifd
,
2376 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2378 complaint (&symfile_complaints
,
2379 "bad iss for external symbol: %ld (max %ld)",
2380 ext_in
->asym
.iss
, hdr
->issExtMax
);
2384 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2385 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2388 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2392 /* Pass 3 over files, over local syms: fill in static symbols */
2393 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2395 /* Process ECOFF Symbol Types and Storage Classes */
2396 switch (ext_in
->asym
.st
)
2399 /* Beginnning of Procedure */
2400 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2403 /* Load time only static procs */
2404 ms_type
= mst_file_text
;
2405 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2408 /* External symbol */
2409 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2411 /* The value of a common symbol is its size, not its address.
2415 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2418 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2420 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2423 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2425 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2428 svalue
+= ANOFFSET (objfile
->section_offsets
,
2429 get_section_index (objfile
, ".sbss"));
2437 /* On certain platforms, some extra label symbols can be
2438 generated by the linker. One possible usage for this kind
2439 of symbols is to represent the address of the begining of a
2440 given section. For instance, on Tru64 5.1, the address of
2441 the _ftext label is the start address of the .text section.
2443 The storage class of these symbols is usually directly
2444 related to the section to which the symbol refers. For
2445 instance, on Tru64 5.1, the storage class for the _fdata
2446 label is scData, refering to the .data section.
2448 It is actually possible that the section associated to the
2449 storage class of the label does not exist. On True64 5.1
2450 for instance, the libm.so shared library does not contain
2451 any .data section, although it contains a _fpdata label
2452 which storage class is scData... Since these symbols are
2453 usually useless for the debugger user anyway, we just
2454 discard these symbols.
2457 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2459 if (objfile
->sect_index_text
== -1)
2462 ms_type
= mst_file_text
;
2463 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2465 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2467 if (objfile
->sect_index_data
== -1)
2470 ms_type
= mst_file_data
;
2471 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2473 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2475 if (objfile
->sect_index_bss
== -1)
2478 ms_type
= mst_file_bss
;
2479 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2481 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2483 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2485 if (sbss_sect_index
== -1)
2488 ms_type
= mst_file_bss
;
2489 svalue
+= ANOFFSET (objfile
->section_offsets
, sbss_sect_index
);
2496 /* The alpha has the section start addresses in stLocal symbols
2497 whose name starts with a `.'. Skip those but complain for all
2498 other stLocal symbols.
2499 Irix6 puts the section start addresses in stNil symbols, skip
2505 ms_type
= mst_unknown
;
2506 unknown_ext_complaint (name
);
2508 if (!ECOFF_IN_ELF (cur_bfd
))
2509 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2512 /* Pass 3 over files, over local syms: fill in static symbols */
2513 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2515 struct partial_symtab
*save_pst
;
2519 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2523 fdr_to_pst
[f_idx
].pst
= NULL
;
2527 /* Determine the start address for this object file from the
2528 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2532 if (relocatable
|| textlow
!= 0)
2533 textlow
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2537 pst
= start_psymtab_common (objfile
, objfile
->section_offsets
,
2540 objfile
->global_psymbols
.next
,
2541 objfile
->static_psymbols
.next
);
2542 pst
->read_symtab_private
= ((char *)
2543 obstack_alloc (&objfile
->psymbol_obstack
,
2544 sizeof (struct symloc
)));
2545 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2548 FDR_IDX (pst
) = f_idx
;
2549 CUR_BFD (pst
) = cur_bfd
;
2550 DEBUG_SWAP (pst
) = debug_swap
;
2551 DEBUG_INFO (pst
) = debug_info
;
2552 PENDING_LIST (pst
) = pending_list
;
2554 /* The way to turn this into a symtab is to call... */
2555 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2557 /* Set up language for the pst.
2558 The language from the FDR is used if it is unambigious (e.g. cfront
2559 with native cc and g++ will set the language to C).
2560 Otherwise we have to deduce the language from the filename.
2561 Native ecoff has every header file in a separate FDR, so
2562 deduce_language_from_filename will return language_unknown for
2563 a header file, which is not what we want.
2564 But the FDRs for the header files are after the FDR for the source
2565 file, so we can assign the language of the source file to the
2566 following header files. Then we save the language in the private
2567 pst data so that we can reuse it when building symtabs. */
2568 prev_language
= psymtab_language
;
2572 case langCplusplusV2
:
2573 psymtab_language
= language_cplus
;
2576 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2579 if (psymtab_language
== language_unknown
)
2580 psymtab_language
= prev_language
;
2581 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2583 pst
->texthigh
= pst
->textlow
;
2585 /* For stabs-in-ecoff files, the second symbol must be @stab.
2586 This symbol is emitted by mips-tfile to signal that the
2587 current object file uses encapsulated stabs instead of mips
2588 ecoff for local symbols. (It is the second symbol because
2589 the first symbol is the stFile used to signal the start of a
2591 processing_gcc_compilation
= 0;
2594 (*swap_sym_in
) (cur_bfd
,
2595 ((char *) debug_info
->external_sym
2596 + (fh
->isymBase
+ 1) * external_sym_size
),
2598 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2599 processing_gcc_compilation
= 2;
2602 if (processing_gcc_compilation
!= 0)
2604 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2609 (*swap_sym_in
) (cur_bfd
,
2610 (((char *) debug_info
->external_sym
)
2611 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2613 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2614 if (!ECOFF_IS_STAB (&sh
))
2616 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2621 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2622 if (sh
.st
== stStaticProc
)
2624 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2625 prim_record_minimal_symbol_and_info (namestring
,
2629 SECT_OFF_TEXT (objfile
),
2633 procaddr
= sh
.value
;
2635 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2636 (debug_info
->external_aux
2639 (*swap_sym_in
) (cur_bfd
,
2640 ((char *) debug_info
->external_sym
2641 + ((fh
->isymBase
+ isym
- 1)
2642 * external_sym_size
)),
2646 CORE_ADDR high
= procaddr
+ sh
.value
;
2648 /* Kludge for Irix 5.2 zero fh->adr. */
2650 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2651 pst
->textlow
= procaddr
;
2652 if (high
> pst
->texthigh
)
2653 pst
->texthigh
= high
;
2656 else if (sh
.st
== stStatic
)
2671 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2672 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2673 prim_record_minimal_symbol_and_info (namestring
,
2677 SECT_OFF_DATA (objfile
),
2683 /* FIXME! Shouldn't this use cases for bss,
2684 then have the default be abs? */
2685 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2686 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2687 prim_record_minimal_symbol_and_info (namestring
,
2691 SECT_OFF_BSS (objfile
),
2699 /* Handle stabs continuation */
2701 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2702 int len
= strlen (stabstring
);
2703 while (stabstring
[len
- 1] == '\\')
2706 char *stabstring1
= stabstring
;
2710 /* Ignore continuation char from 1st string */
2713 /* Read next stabstring */
2715 (*swap_sym_in
) (cur_bfd
,
2716 (((char *) debug_info
->external_sym
)
2717 + (fh
->isymBase
+ cur_sdx
)
2718 * external_sym_size
),
2720 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2721 len2
= strlen (stabstring2
);
2723 /* Concatinate stabstring2 with stabstring1 */
2725 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2726 stabstring
= xrealloc (stabstring
, len
+ len2
+ 1);
2729 stabstring
= xmalloc (len
+ len2
+ 1);
2730 strcpy (stabstring
, stabstring1
);
2732 strcpy (stabstring
+ len
, stabstring2
);
2740 * Standard, external, non-debugger, symbols
2743 case N_TEXT
| N_EXT
:
2744 case N_NBTEXT
| N_EXT
:
2745 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2748 case N_DATA
| N_EXT
:
2749 case N_NBDATA
| N_EXT
:
2750 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2755 case N_NBBSS
| N_EXT
:
2756 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2757 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
2764 /* Standard, local, non-debugger, symbols */
2768 /* We need to be able to deal with both N_FN or N_TEXT,
2769 because we have no way of knowing whether the sys-supplied ld
2770 or GNU ld was used to make the executable. Sequents throw
2771 in another wrinkle -- they renumbered N_FN. */
2779 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2782 case N_UNDF
| N_EXT
:
2783 continue; /* Just undefined, not COMMON */
2788 /* Lots of symbol types we can just ignore. */
2795 /* Keep going . . . */
2798 * Special symbol types for GNU
2801 case N_INDR
| N_EXT
:
2803 case N_SETA
| N_EXT
:
2805 case N_SETT
| N_EXT
:
2807 case N_SETD
| N_EXT
:
2809 case N_SETB
| N_EXT
:
2820 static int prev_so_symnum
= -10;
2821 static int first_so_symnum
;
2823 int prev_textlow_not_set
;
2825 valu
= sh
.value
+ ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
2827 prev_textlow_not_set
= textlow_not_set
;
2829 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2830 /* A zero value is probably an indication for the SunPRO 3.0
2831 compiler. end_psymtab explicitly tests for zero, so
2832 don't relocate it. */
2836 textlow_not_set
= 1;
2840 textlow_not_set
= 0;
2842 textlow_not_set
= 0;
2844 past_first_source_file
= 1;
2846 if (prev_so_symnum
!= symnum
- 1)
2847 { /* Here if prev stab wasn't N_SO */
2848 first_so_symnum
= symnum
;
2852 pst
= (struct partial_symtab
*) 0;
2854 dependencies_used
= 0;
2858 prev_so_symnum
= symnum
;
2860 /* End the current partial symtab and start a new one */
2862 /* SET_NAMESTRING ();*/
2863 namestring
= stabstring
;
2865 /* Null name means end of .o file. Don't start a new one. */
2866 if (*namestring
== '\000')
2869 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2870 The first one is a directory name; the second the file name.
2871 If pst exists, is empty, and has a filename ending in '/',
2872 we assume the previous N_SO was a directory name. */
2874 p
= strrchr (namestring
, '/');
2875 if (p
&& *(p
+ 1) == '\000')
2876 continue; /* Simply ignore directory name SOs */
2878 /* Some other compilers (C++ ones in particular) emit useless
2879 SOs for non-existant .c files. We ignore all subsequent SOs that
2880 immediately follow the first. */
2892 enum language tmp_language
;
2893 /* Mark down an include file in the current psymtab */
2895 /* SET_NAMESTRING ();*/
2896 namestring
= stabstring
;
2898 tmp_language
= deduce_language_from_filename (namestring
);
2900 /* Only change the psymtab's language if we've learned
2901 something useful (eg. tmp_language is not language_unknown).
2902 In addition, to match what start_subfile does, never change
2904 if (tmp_language
!= language_unknown
2905 && (tmp_language
!= language_c
2906 || psymtab_language
!= language_cplus
))
2907 psymtab_language
= tmp_language
;
2909 /* In C++, one may expect the same filename to come round many
2910 times, when code is coming alternately from the main file
2911 and from inline functions in other files. So I check to see
2912 if this is a file we've seen before -- either the main
2913 source file, or a previously included file.
2915 This seems to be a lot of time to be spending on N_SOL, but
2916 things like "break c-exp.y:435" need to work (I
2917 suppose the psymtab_include_list could be hashed or put
2918 in a binary tree, if profiling shows this is a major hog). */
2919 if (pst
&& STREQ (namestring
, pst
->filename
))
2923 for (i
= 0; i
< includes_used
; i
++)
2924 if (STREQ (namestring
, psymtab_include_list
[i
]))
2933 psymtab_include_list
[includes_used
++] = namestring
;
2934 if (includes_used
>= includes_allocated
)
2936 char **orig
= psymtab_include_list
;
2938 psymtab_include_list
= (char **)
2939 alloca ((includes_allocated
*= 2) *
2941 memcpy ((PTR
) psymtab_include_list
, (PTR
) orig
,
2942 includes_used
* sizeof (char *));
2946 case N_LSYM
: /* Typedef or automatic variable. */
2947 case N_STSYM
: /* Data seg var -- static */
2948 case N_LCSYM
: /* BSS " */
2949 case N_ROSYM
: /* Read-only data seg var -- static. */
2950 case N_NBSTS
: /* Gould nobase. */
2951 case N_NBLCS
: /* symbols. */
2953 case N_GSYM
: /* Global (extern) variable; can be
2954 data or bss (sigh FIXME). */
2956 /* Following may probably be ignored; I'll leave them here
2957 for now (until I do Pascal and Modula 2 extensions). */
2959 case N_PC
: /* I may or may not need this; I
2961 case N_M2C
: /* I suspect that I can ignore this here. */
2962 case N_SCOPE
: /* Same. */
2964 /* SET_NAMESTRING ();*/
2965 namestring
= stabstring
;
2966 p
= (char *) strchr (namestring
, ':');
2968 continue; /* Not a debugging symbol. */
2972 /* Main processing section for debugging symbols which
2973 the initial read through the symbol tables needs to worry
2974 about. If we reach this point, the symbol which we are
2975 considering is definitely one we are interested in.
2976 p must also contain the (valid) index into the namestring
2977 which indicates the debugging type symbol. */
2982 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2983 #ifdef STATIC_TRANSFORM_NAME
2984 namestring
= STATIC_TRANSFORM_NAME (namestring
);
2986 add_psymbol_to_list (namestring
, p
- namestring
,
2987 VAR_NAMESPACE
, LOC_STATIC
,
2988 &objfile
->static_psymbols
,
2990 psymtab_language
, objfile
);
2993 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
2994 /* The addresses in these entries are reported to be
2995 wrong. See the code that reads 'G's for symtabs. */
2996 add_psymbol_to_list (namestring
, p
- namestring
,
2997 VAR_NAMESPACE
, LOC_STATIC
,
2998 &objfile
->global_psymbols
,
3000 psymtab_language
, objfile
);
3004 /* When a 'T' entry is defining an anonymous enum, it
3005 may have a name which is the empty string, or a
3006 single space. Since they're not really defining a
3007 symbol, those shouldn't go in the partial symbol
3008 table. We do pick up the elements of such enums at
3009 'check_enum:', below. */
3010 if (p
>= namestring
+ 2
3011 || (p
== namestring
+ 1
3012 && namestring
[0] != ' '))
3014 add_psymbol_to_list (namestring
, p
- namestring
,
3015 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3016 &objfile
->static_psymbols
,
3018 psymtab_language
, objfile
);
3021 /* Also a typedef with the same name. */
3022 add_psymbol_to_list (namestring
, p
- namestring
,
3023 VAR_NAMESPACE
, LOC_TYPEDEF
,
3024 &objfile
->static_psymbols
,
3026 psymtab_language
, objfile
);
3029 /* The semantics of C++ state that "struct foo { ... }"
3030 also defines a typedef for "foo". Unfortuantely, cfront
3031 never makes the typedef when translating from C++ to C.
3032 We make the typedef here so that "ptype foo" works as
3033 expected for cfront translated code. */
3034 else if (psymtab_language
== language_cplus
)
3036 /* Also a typedef with the same name. */
3037 add_psymbol_to_list (namestring
, p
- namestring
,
3038 VAR_NAMESPACE
, LOC_TYPEDEF
,
3039 &objfile
->static_psymbols
,
3041 psymtab_language
, objfile
);
3046 if (p
!= namestring
) /* a name is there, not just :T... */
3048 add_psymbol_to_list (namestring
, p
- namestring
,
3049 VAR_NAMESPACE
, LOC_TYPEDEF
,
3050 &objfile
->static_psymbols
,
3052 psymtab_language
, objfile
);
3055 /* If this is an enumerated type, we need to
3056 add all the enum constants to the partial symbol
3057 table. This does not cover enums without names, e.g.
3058 "enum {a, b} c;" in C, but fortunately those are
3059 rare. There is no way for GDB to find those from the
3060 enum type without spending too much time on it. Thus
3061 to solve this problem, the compiler needs to put out the
3062 enum in a nameless type. GCC2 does this. */
3064 /* We are looking for something of the form
3065 <name> ":" ("t" | "T") [<number> "="] "e"
3066 {<constant> ":" <value> ","} ";". */
3068 /* Skip over the colon and the 't' or 'T'. */
3070 /* This type may be given a number. Also, numbers can come
3071 in pairs like (0,26). Skip over it. */
3072 while ((*p
>= '0' && *p
<= '9')
3073 || *p
== '(' || *p
== ',' || *p
== ')'
3079 /* The aix4 compiler emits extra crud before the members. */
3082 /* Skip over the type (?). */
3086 /* Skip over the colon. */
3090 /* We have found an enumerated type. */
3091 /* According to comments in read_enum_type
3092 a comma could end it instead of a semicolon.
3093 I don't know where that happens.
3095 while (*p
&& *p
!= ';' && *p
!= ',')
3099 /* Check for and handle cretinous dbx symbol name
3101 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3102 p
= next_symbol_text (objfile
);
3104 /* Point to the character after the name
3105 of the enum constant. */
3106 for (q
= p
; *q
&& *q
!= ':'; q
++)
3108 /* Note that the value doesn't matter for
3109 enum constants in psymtabs, just in symtabs. */
3110 add_psymbol_to_list (p
, q
- p
,
3111 VAR_NAMESPACE
, LOC_CONST
,
3112 &objfile
->static_psymbols
, 0,
3113 0, psymtab_language
, objfile
);
3114 /* Point past the name. */
3116 /* Skip over the value. */
3117 while (*p
&& *p
!= ',')
3119 /* Advance past the comma. */
3126 /* Constant, e.g. from "const" in Pascal. */
3127 add_psymbol_to_list (namestring
, p
- namestring
,
3128 VAR_NAMESPACE
, LOC_CONST
,
3129 &objfile
->static_psymbols
, sh
.value
,
3130 0, psymtab_language
, objfile
);
3136 int name_len
= p
- namestring
;
3137 char *name
= xmalloc (name_len
+ 1);
3138 memcpy (name
, namestring
, name_len
);
3139 name
[name_len
] = '\0';
3140 function_outside_compilation_unit_complaint (name
);
3143 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3144 add_psymbol_to_list (namestring
, p
- namestring
,
3145 VAR_NAMESPACE
, LOC_BLOCK
,
3146 &objfile
->static_psymbols
,
3148 psymtab_language
, objfile
);
3151 /* Global functions were ignored here, but now they
3152 are put into the global psymtab like one would expect.
3153 They're also in the minimal symbol table. */
3157 int name_len
= p
- namestring
;
3158 char *name
= xmalloc (name_len
+ 1);
3159 memcpy (name
, namestring
, name_len
);
3160 name
[name_len
] = '\0';
3161 function_outside_compilation_unit_complaint (name
);
3164 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3165 add_psymbol_to_list (namestring
, p
- namestring
,
3166 VAR_NAMESPACE
, LOC_BLOCK
,
3167 &objfile
->global_psymbols
,
3169 psymtab_language
, objfile
);
3172 /* Two things show up here (hopefully); static symbols of
3173 local scope (static used inside braces) or extensions
3174 of structure symbols. We can ignore both. */
3188 case '#': /* for symbol identification (used in live ranges) */
3189 /* added to support cfront stabs strings */
3190 case 'Z': /* for definition continuations */
3191 case 'P': /* for prototypes */
3195 /* It is a C++ nested symbol. We don't need to record it
3196 (I don't think); if we try to look up foo::bar::baz,
3197 then symbols for the symtab containing foo should get
3198 read in, I think. */
3199 /* Someone says sun cc puts out symbols like
3200 /foo/baz/maclib::/usr/local/bin/maclib,
3201 which would get here with a symbol type of ':'. */
3205 /* Unexpected symbol descriptor. The second and subsequent stabs
3206 of a continued stab can show up here. The question is
3207 whether they ever can mimic a normal stab--it would be
3208 nice if not, since we certainly don't want to spend the
3209 time searching to the end of every string looking for
3212 complaint (&symfile_complaints
,
3213 "unknown symbol descriptor `%c'", p
[1]);
3215 /* Ignore it; perhaps it is an extension that we don't
3224 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3225 /* Solaris 2 end of module, finish current partial
3226 symbol table. END_PSYMTAB will set
3227 pst->texthigh to the proper value, which is
3228 necessary if a module compiled without
3229 debugging info follows this module. */
3232 pst
= (struct partial_symtab
*) 0;
3234 dependencies_used
= 0;
3240 if (sh
.value
> save_pst
->texthigh
)
3241 save_pst
->texthigh
= sh
.value
;
3246 case N_SSYM
: /* Claim: Structure or union element.
3247 Hopefully, I can ignore this. */
3248 case N_ENTRY
: /* Alternate entry point; can ignore. */
3249 case N_MAIN
: /* Can definitely ignore this. */
3250 case N_CATCH
: /* These are GNU C++ extensions */
3251 case N_EHDECL
: /* that can safely be ignored here. */
3261 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3262 case N_DEFD
: /* GNU Modula-2 */
3263 case N_ALIAS
: /* SunPro F77: alias name, ignore for now. */
3265 case N_OBJ
: /* useless types from Solaris */
3267 /* These symbols aren't interesting; don't worry about them */
3272 /* If we haven't found it yet, ignore it. It's probably some
3273 new type we don't know about yet. */
3274 complaint (&symfile_complaints
, "unknown symbol type %s",
3275 local_hex_string (type_code
)); /*CUR_SYMBOL_TYPE*/
3279 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3282 /* end - Handle continuation */
3287 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3290 enum address_class
class;
3292 (*swap_sym_in
) (cur_bfd
,
3293 ((char *) debug_info
->external_sym
3294 + ((fh
->isymBase
+ cur_sdx
)
3295 * external_sym_size
)),
3298 if (ECOFF_IS_STAB (&sh
))
3304 /* Non absolute static symbols go into the minimal table. */
3305 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3306 || (sh
.index
== indexNil
3307 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3309 /* FIXME, premature? */
3314 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3320 /* The value of a stEnd symbol is the displacement from the
3321 corresponding start symbol value, do not relocate it. */
3323 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3330 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3334 sh
.value
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3345 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3346 mst_file_text
, NULL
,
3347 SECT_OFF_TEXT (objfile
), NULL
,
3353 /* Ignore all parameter symbol records. */
3354 if (sh
.index
>= hdr
->iauxMax
)
3356 /* Should not happen, but does when cross-compiling
3357 with the MIPS compiler. FIXME -- pull later. */
3358 index_complaint (name
);
3359 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
3362 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3363 (debug_info
->external_aux
3367 if (new_sdx
<= cur_sdx
)
3369 /* This should not happen either... FIXME. */
3370 complaint (&symfile_complaints
,
3371 "bad proc end in aux found from symbol %s",
3373 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3376 /* Make sure that this stProc entry represents a "real"
3377 procedure. If not, ignore it. */
3378 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3381 /* Usually there is a local and a global stProc symbol
3382 for a function. This means that the function name
3383 has already been entered into the mimimal symbol table
3384 while processing the global symbols in pass 2 above.
3385 One notable exception is the PROGRAM name from
3386 f77 compiled executables, it is only put out as
3387 local stProc symbol, and a global MAIN__ stProc symbol
3388 points to it. It doesn't matter though, as gdb is
3389 still able to find the PROGRAM name via the partial
3390 symbol table, and the MAIN__ symbol via the minimal
3392 if (sh
.st
== stProc
)
3393 add_psymbol_to_list (name
, strlen (name
),
3394 VAR_NAMESPACE
, LOC_BLOCK
,
3395 &objfile
->global_psymbols
,
3396 0, sh
.value
, psymtab_language
, objfile
);
3398 add_psymbol_to_list (name
, strlen (name
),
3399 VAR_NAMESPACE
, LOC_BLOCK
,
3400 &objfile
->static_psymbols
,
3401 0, sh
.value
, psymtab_language
, objfile
);
3403 procaddr
= sh
.value
;
3406 (*swap_sym_in
) (cur_bfd
,
3407 ((char *) debug_info
->external_sym
3408 + ((fh
->isymBase
+ cur_sdx
- 1)
3409 * external_sym_size
)),
3414 /* Kludge for Irix 5.2 zero fh->adr. */
3416 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3417 pst
->textlow
= procaddr
;
3419 high
= procaddr
+ sh
.value
;
3420 if (high
> pst
->texthigh
)
3421 pst
->texthigh
= high
;
3424 case stStatic
: /* Variable */
3425 if (SC_IS_DATA (sh
.sc
))
3426 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3427 mst_file_data
, NULL
,
3428 SECT_OFF_DATA (objfile
),
3432 prim_record_minimal_symbol_and_info (name
, sh
.value
,
3434 SECT_OFF_BSS (objfile
),
3440 case stIndirect
: /* Irix5 forward declaration */
3441 /* Skip forward declarations from Irix5 cc */
3444 case stTypedef
: /* Typedef */
3445 /* Skip typedefs for forward declarations and opaque
3446 structs from alpha and mips cc. */
3447 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3449 class = LOC_TYPEDEF
;
3452 case stConstant
: /* Constant decl */
3459 case stBlock
: /* { }, str, un, enum */
3460 /* Do not create a partial symbol for cc unnamed aggregates
3461 and gcc empty aggregates. */
3462 if ((sh
.sc
== scInfo
3463 || SC_IS_COMMON (sh
.sc
))
3465 && sh
.index
!= cur_sdx
+ 2)
3467 add_psymbol_to_list (name
, strlen (name
),
3468 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
3469 &objfile
->static_psymbols
,
3471 psymtab_language
, objfile
);
3473 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3475 /* Skip over the block */
3477 if (new_sdx
<= cur_sdx
)
3479 /* This happens with the Ultrix kernel. */
3480 complaint (&symfile_complaints
,
3481 "bad aux index at block symbol %s", name
);
3482 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
3487 case stFile
: /* File headers */
3488 case stLabel
: /* Labels */
3489 case stEnd
: /* Ends of files */
3492 case stLocal
: /* Local variables */
3493 /* Normally these are skipped because we skip over
3494 all blocks we see. However, these can occur
3495 as visible symbols in a .h file that contains code. */
3499 /* Both complaints are valid: one gives symbol name,
3500 the other the offending symbol type. */
3501 complaint (&symfile_complaints
, "unknown local symbol %s",
3503 complaint (&symfile_complaints
, "with type %d", sh
.st
);
3507 /* Use this gdb symbol */
3508 add_psymbol_to_list (name
, strlen (name
),
3509 VAR_NAMESPACE
, class,
3510 &objfile
->static_psymbols
,
3511 0, sh
.value
, psymtab_language
, objfile
);
3513 cur_sdx
++; /* Go to next file symbol */
3516 /* Now do enter the external symbols. */
3517 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3518 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3519 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3520 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3521 for (; --cur_sdx
>= 0; ext_ptr
++)
3523 enum address_class
class;
3528 if (ext_ptr
->ifd
!= f_idx
)
3529 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
3530 psh
= &ext_ptr
->asym
;
3532 /* Do not add undefined symbols to the partial symbol table. */
3533 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3536 svalue
= psh
->value
;
3541 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_TEXT (objfile
));
3548 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_DATA (objfile
));
3552 svalue
+= ANOFFSET (objfile
->section_offsets
, SECT_OFF_BSS (objfile
));
3559 /* These are generated for static symbols in .o files,
3564 /* External procedure symbols have been entered
3565 into the minimal symbol table in pass 2 above.
3566 Ignore them, as parse_external will ignore them too. */
3572 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3573 /* Fall through, pretend it's global. */
3575 /* Global common symbols are resolved by the runtime loader,
3577 if (SC_IS_COMMON (psh
->sc
))
3583 name
= debug_info
->ssext
+ psh
->iss
;
3584 add_psymbol_to_list (name
, strlen (name
),
3585 VAR_NAMESPACE
, class,
3586 &objfile
->global_psymbols
,
3588 psymtab_language
, objfile
);
3592 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3593 empty and put on the free list. */
3594 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
3595 psymtab_include_list
, includes_used
,
3596 -1, save_pst
->texthigh
,
3597 dependency_list
, dependencies_used
, textlow_not_set
);
3599 dependencies_used
= 0;
3601 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
3602 objfile
->ei
.entry_point
< save_pst
->texthigh
)
3604 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
3605 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
3608 /* The objfile has its functions reordered if this partial symbol
3609 table overlaps any other partial symbol table.
3610 We cannot assume a reordered objfile if a partial symbol table
3611 is contained within another partial symbol table, as partial symbol
3612 tables for include files with executable code are contained
3613 within the partial symbol table for the including source file,
3614 and we do not want to flag the objfile reordered for these cases.
3616 This strategy works well for Irix-5.2 shared libraries, but we
3617 might have to use a more elaborate (and slower) algorithm for
3619 save_pst
= fdr_to_pst
[f_idx
].pst
;
3620 if (save_pst
!= NULL
3621 && save_pst
->textlow
!= 0
3622 && !(objfile
->flags
& OBJF_REORDERED
))
3624 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3627 && save_pst
->textlow
>= pst
->textlow
3628 && save_pst
->textlow
< pst
->texthigh
3629 && save_pst
->texthigh
> pst
->texthigh
)
3631 objfile
->flags
|= OBJF_REORDERED
;
3638 /* Now scan the FDRs for dependencies */
3639 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3641 fh
= f_idx
+ debug_info
->fdr
;
3642 pst
= fdr_to_pst
[f_idx
].pst
;
3644 if (pst
== (struct partial_symtab
*) NULL
)
3647 /* This should catch stabs-in-ecoff. */
3651 /* Skip the first file indirect entry as it is a self dependency
3652 for source files or a reverse .h -> .c dependency for header files. */
3653 pst
->number_of_dependencies
= 0;
3655 ((struct partial_symtab
**)
3656 obstack_alloc (&objfile
->psymbol_obstack
,
3658 * sizeof (struct partial_symtab
*))));
3659 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3663 (*swap_rfd_in
) (cur_bfd
,
3664 ((char *) debug_info
->external_rfd
3665 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3667 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3669 complaint (&symfile_complaints
, "bad file number %ld", rh
);
3673 /* Skip self dependencies of header files. */
3677 /* Do not add to dependeny list if psymtab was empty. */
3678 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3680 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3684 /* Remove the dummy psymtab created for -O3 images above, if it is
3685 still empty, to enable the detection of stripped executables. */
3686 if (objfile
->psymtabs
->next
== NULL
3687 && objfile
->psymtabs
->number_of_dependencies
== 0
3688 && objfile
->psymtabs
->n_global_syms
== 0
3689 && objfile
->psymtabs
->n_static_syms
== 0)
3690 objfile
->psymtabs
= NULL
;
3691 do_cleanups (old_chain
);
3694 /* If the current psymbol has an enumerated type, we need to add
3695 all the the enum constants to the partial symbol table. */
3698 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3701 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3702 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3703 char *ext_sym
= ((char *) debug_info
->external_sym
3704 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3714 /* It is an enumerated type if the next symbol entry is a stMember
3715 and its auxiliary index is indexNil or its auxiliary entry
3716 is a plain btNil or btVoid.
3717 Alpha cc -migrate enums are recognized by a zero index and
3718 a zero symbol value.
3719 DU 4.0 cc enums are recognized by a member type of btEnum without
3720 qualifiers and a zero symbol value. */
3721 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3722 if (sh
.st
!= stMember
)
3725 if (sh
.index
== indexNil
3726 || (sh
.index
== 0 && svalue
== 0))
3728 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3729 &(debug_info
->external_aux
3730 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3732 if ((tir
.bt
!= btNil
3734 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3735 || tir
.tq0
!= tqNil
)
3747 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3748 if (sh
.st
!= stMember
)
3750 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3752 /* Note that the value doesn't matter for enum constants
3753 in psymtabs, just in symtabs. */
3754 add_psymbol_to_list (name
, strlen (name
),
3755 VAR_NAMESPACE
, LOC_CONST
,
3756 &objfile
->static_psymbols
, 0,
3757 (CORE_ADDR
) 0, psymtab_language
, objfile
);
3758 ext_sym
+= external_sym_size
;
3762 /* Get the next symbol. OBJFILE is unused. */
3765 mdebug_next_symbol_text (struct objfile
*objfile
)
3770 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3771 ((char *) debug_info
->external_sym
3772 + ((cur_fdr
->isymBase
+ cur_sdx
)
3773 * debug_swap
->external_sym_size
)),
3775 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3778 /* Ancillary function to psymtab_to_symtab(). Does all the work
3779 for turning the partial symtab PST into a symtab, recurring
3780 first on all dependent psymtabs. The argument FILENAME is
3781 only passed so we can see in debug stack traces what file
3784 This function has a split personality, based on whether the
3785 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3786 The flow of control and even the memory allocation differs. FIXME. */
3789 psymtab_to_symtab_1 (struct partial_symtab
*pst
, char *filename
)
3791 bfd_size_type external_sym_size
;
3792 bfd_size_type external_pdr_size
;
3793 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3794 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3796 struct symtab
*st
= NULL
;
3798 struct linetable
*lines
;
3799 CORE_ADDR lowest_pdr_addr
= 0;
3800 int last_symtab_ended
= 0;
3806 /* Read in all partial symbtabs on which this one is dependent.
3807 NOTE that we do have circular dependencies, sigh. We solved
3808 that by setting pst->readin before this point. */
3810 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3811 if (!pst
->dependencies
[i
]->readin
)
3813 /* Inform about additional files to be read in. */
3816 fputs_filtered (" ", gdb_stdout
);
3818 fputs_filtered ("and ", gdb_stdout
);
3820 printf_filtered ("%s...",
3821 pst
->dependencies
[i
]->filename
);
3822 wrap_here (""); /* Flush output */
3823 gdb_flush (gdb_stdout
);
3825 /* We only pass the filename for debug purposes */
3826 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3827 pst
->dependencies
[i
]->filename
);
3830 /* Do nothing if this is a dummy psymtab. */
3832 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3833 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3836 /* Now read the symbols for this symtab */
3838 cur_bfd
= CUR_BFD (pst
);
3839 debug_swap
= DEBUG_SWAP (pst
);
3840 debug_info
= DEBUG_INFO (pst
);
3841 pending_list
= PENDING_LIST (pst
);
3842 external_sym_size
= debug_swap
->external_sym_size
;
3843 external_pdr_size
= debug_swap
->external_pdr_size
;
3844 swap_sym_in
= debug_swap
->swap_sym_in
;
3845 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3846 current_objfile
= pst
->objfile
;
3847 cur_fd
= FDR_IDX (pst
);
3848 fh
= ((cur_fd
== -1)
3850 : debug_info
->fdr
+ cur_fd
);
3853 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3854 processing_gcc_compilation
= 0;
3855 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3859 (*swap_sym_in
) (cur_bfd
,
3860 ((char *) debug_info
->external_sym
3861 + (fh
->isymBase
+ 1) * external_sym_size
),
3863 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3866 /* We indicate that this is a GCC compilation so that certain
3867 features will be enabled in stabsread/dbxread. */
3868 processing_gcc_compilation
= 2;
3872 if (processing_gcc_compilation
!= 0)
3875 /* This symbol table contains stabs-in-ecoff entries. */
3877 /* Parse local symbols first */
3879 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3881 current_objfile
= NULL
;
3884 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3890 (*swap_sym_in
) (cur_bfd
,
3891 (((char *) debug_info
->external_sym
)
3892 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3894 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3896 /* XXX This is a hack. It will go away! */
3897 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3899 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3901 /* We should never get non N_STAB symbols here, but they
3902 should be harmless, so keep process_one_symbol from
3903 complaining about them. */
3904 if (type_code
& N_STAB
)
3906 /* If we found a trailing N_SO with no name, process
3907 it here instead of in process_one_symbol, so we
3908 can keep a handle to its symtab. The symtab
3909 would otherwise be ended twice, once in
3910 process_one_symbol, and once after this loop. */
3911 if (type_code
== N_SO
3913 && previous_stab_code
!= (unsigned char) N_SO
3916 valu
+= ANOFFSET (pst
->section_offsets
,
3917 SECT_OFF_TEXT (pst
->objfile
));
3918 previous_stab_code
= N_SO
;
3919 st
= end_symtab (valu
, pst
->objfile
,
3920 SECT_OFF_TEXT (pst
->objfile
));
3922 last_symtab_ended
= 1;
3926 last_symtab_ended
= 0;
3927 process_one_symbol (type_code
, 0, valu
, name
,
3928 pst
->section_offsets
, pst
->objfile
);
3931 /* Similarly a hack. */
3932 else if (name
[0] == '#')
3934 process_one_symbol (N_SLINE
, 0, valu
, name
,
3935 pst
->section_offsets
, pst
->objfile
);
3937 if (type_code
== N_FUN
)
3939 /* Make up special symbol to contain
3940 procedure specific info */
3941 struct mips_extra_func_info
*e
=
3942 ((struct mips_extra_func_info
*)
3943 obstack_alloc (¤t_objfile
->symbol_obstack
,
3944 sizeof (struct mips_extra_func_info
)));
3945 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3947 memset (e
, 0, sizeof (struct mips_extra_func_info
));
3948 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3949 SYMBOL_CLASS (s
) = LOC_CONST
;
3950 SYMBOL_TYPE (s
) = mdebug_type_void
;
3951 SYMBOL_VALUE (s
) = (long) e
;
3952 e
->pdr
.framereg
= -1;
3953 add_symbol_to_list (s
, &local_symbols
);
3956 else if (sh
.st
== stLabel
)
3958 if (sh
.index
== indexNil
)
3960 /* This is what the gcc2_compiled and __gnu_compiled_*
3961 show up as. So don't complain. */
3966 /* Handle encoded stab line number. */
3967 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT (pst
->objfile
));
3968 record_line (current_subfile
, sh
.index
, valu
);
3971 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3972 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3973 /* These are generated by gcc-2.x, do not complain */
3976 complaint (&symfile_complaints
, "unknown stabs symbol %s", name
);
3979 if (! last_symtab_ended
)
3981 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT (pst
->objfile
));
3985 /* Sort the symbol table now, we are done adding symbols to it.
3986 We must do this before parse_procedure calls lookup_symbol. */
3987 sort_symtab_syms (st
);
3989 /* There used to be a call to sort_blocks here, but this should not
3990 be necessary for stabs symtabs. And as sort_blocks modifies the
3991 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3992 it did the wrong thing if the first procedure in a file was
3993 generated via asm statements. */
3995 /* Fill in procedure info next. */
3999 struct cleanup
*old_chain
;
4005 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4006 old_chain
= make_cleanup (xfree
, pr_block
);
4008 pdr_ptr
= ((char *) debug_info
->external_pdr
4009 + fh
->ipdFirst
* external_pdr_size
);
4010 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4014 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4016 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4018 /* Determine lowest PDR address, the PDRs are not always
4020 if (pdr_in
== pr_block
)
4021 lowest_pdr_addr
= pdr_in
->adr
;
4022 else if (pdr_in
->adr
< lowest_pdr_addr
)
4023 lowest_pdr_addr
= pdr_in
->adr
;
4027 pdr_in_end
= pdr_in
+ fh
->cpd
;
4028 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4029 parse_procedure (pdr_in
, st
, pst
);
4031 do_cleanups (old_chain
);
4036 /* This symbol table contains ordinary ecoff entries. */
4042 /* How many symbols will we need */
4043 /* FIXME, this does not count enum values. */
4044 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
4048 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
4052 f_max
+= fh
->csym
+ fh
->cpd
;
4053 maxlines
= 2 * fh
->cline
;
4054 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
4056 /* The proper language was already determined when building
4057 the psymtab, use it. */
4058 st
->language
= PST_PRIVATE (pst
)->pst_language
;
4061 psymtab_language
= st
->language
;
4063 lines
= LINETABLE (st
);
4065 /* Get a new lexical context */
4067 push_parse_stack ();
4068 top_stack
->cur_st
= st
;
4069 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
4071 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4072 BLOCK_END (top_stack
->cur_block
) = 0;
4073 top_stack
->blocktype
= stFile
;
4074 top_stack
->maxsyms
= 2 * f_max
;
4075 top_stack
->cur_type
= 0;
4076 top_stack
->procadr
= 0;
4077 top_stack
->numargs
= 0;
4078 found_ecoff_debugging_info
= 0;
4085 /* Parse local symbols first */
4086 sym_ptr
= ((char *) debug_info
->external_sym
4087 + fh
->isymBase
* external_sym_size
);
4088 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4089 while (sym_ptr
< sym_end
)
4094 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4095 c
= parse_symbol (&sh
,
4096 debug_info
->external_aux
+ fh
->iauxBase
,
4097 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4098 sym_ptr
+= c
* external_sym_size
;
4101 /* Linenumbers. At the end, check if we can save memory.
4102 parse_lines has to look ahead an arbitrary number of PDR
4103 structures, so we swap them all first. */
4107 struct cleanup
*old_chain
;
4113 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
4115 old_chain
= make_cleanup (xfree
, pr_block
);
4117 pdr_ptr
= ((char *) debug_info
->external_pdr
4118 + fh
->ipdFirst
* external_pdr_size
);
4119 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4123 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4125 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4127 /* Determine lowest PDR address, the PDRs are not always
4129 if (pdr_in
== pr_block
)
4130 lowest_pdr_addr
= pdr_in
->adr
;
4131 else if (pdr_in
->adr
< lowest_pdr_addr
)
4132 lowest_pdr_addr
= pdr_in
->adr
;
4135 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
4136 if (lines
->nitems
< fh
->cline
)
4137 lines
= shrink_linetable (lines
);
4139 /* Fill in procedure info next. */
4141 pdr_in_end
= pdr_in
+ fh
->cpd
;
4142 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4143 parse_procedure (pdr_in
, 0, pst
);
4145 do_cleanups (old_chain
);
4149 LINETABLE (st
) = lines
;
4151 /* .. and our share of externals.
4152 XXX use the global list to speed up things here. how?
4153 FIXME, Maybe quit once we have found the right number of ext's? */
4154 top_stack
->cur_st
= st
;
4155 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
4157 top_stack
->blocktype
= stFile
;
4159 = (debug_info
->symbolic_header
.isymMax
4160 + debug_info
->symbolic_header
.ipdMax
4161 + debug_info
->symbolic_header
.iextMax
);
4163 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4164 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4165 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
, pst
->objfile
);
4167 /* If there are undefined symbols, tell the user.
4168 The alpha has an undefined symbol for every symbol that is
4169 from a shared library, so tell the user only if verbose is on. */
4170 if (info_verbose
&& n_undef_symbols
)
4172 printf_filtered ("File %s contains %d unresolved references:",
4173 st
->filename
, n_undef_symbols
);
4174 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4175 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4176 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4183 /* Sort the symbol table now, we are done adding symbols to it. */
4184 sort_symtab_syms (st
);
4189 /* Now link the psymtab and the symtab. */
4192 current_objfile
= NULL
;
4195 /* Ancillary parsing procedures. */
4197 /* Return 1 if the symbol pointed to by SH has a cross reference
4198 to an opaque aggregate type, else 0. */
4201 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4208 if (sh
->index
== indexNil
)
4211 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4212 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4213 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4217 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4218 if (rn
->rfd
== 0xfff)
4219 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4227 /* Lookup the type at relative index RN. Return it in TPP
4228 if found and in any event come up with its name PNAME.
4229 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4230 Return value says how many aux symbols we ate. */
4233 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. */
4234 char **pname
, int bigend
, char *sym_name
)
4243 struct mdebug_pending
*pend
;
4245 *tpp
= (struct type
*) NULL
;
4247 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4249 /* Escape index means 'the next one' */
4250 if (rn
->rfd
== 0xfff)
4253 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4260 /* mips cc uses a rf of -1 for opaque struct definitions.
4261 Set TYPE_FLAG_STUB for these types so that check_typedef will
4262 resolve them if the struct gets defined in another compilation unit. */
4265 *pname
= "<undefined>";
4266 *tpp
= init_type (type_code
, 0, TYPE_FLAG_STUB
, (char *) NULL
, current_objfile
);
4270 /* mips cc uses an escaped rn->index of 0 for struct return types
4271 of procedures that were compiled without -g. These will always remain
4273 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4275 *pname
= "<undefined>";
4279 /* Find the relative file descriptor and the symbol in it. */
4280 fh
= get_rfd (fd
, rf
);
4281 xref_fd
= fh
- debug_info
->fdr
;
4283 if (rn
->index
>= fh
->csym
)
4285 /* File indirect entry is corrupt. */
4286 *pname
= "<illegal>";
4287 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4291 /* If we have processed this symbol then we left a forwarding
4292 pointer to the type in the pending list. If not, we`ll put
4293 it in a list of pending types, to be processed later when
4294 the file will be. In any event, we collect the name for the
4297 esh
= ((char *) debug_info
->external_sym
4298 + ((fh
->isymBase
+ rn
->index
)
4299 * debug_swap
->external_sym_size
));
4300 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4302 /* Make sure that this type of cross reference can be handled. */
4303 if ((sh
.sc
!= scInfo
4304 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4305 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4306 && sh
.st
!= stEnum
))
4307 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4309 /* File indirect entry is corrupt. */
4310 *pname
= "<illegal>";
4311 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4315 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4317 pend
= is_pending_symbol (fh
, esh
);
4322 /* We have not yet seen this type. */
4324 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4328 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4330 a) forward declarations of structs/unions/enums which are not
4331 defined in this compilation unit.
4332 For these the type will be void. This is a bad design decision
4333 as cross referencing across compilation units is impossible
4334 due to the missing name.
4335 b) forward declarations of structs/unions/enums/typedefs which
4336 are defined later in this file or in another file in the same
4337 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4338 Simply cross reference those again to get the true type.
4339 The forward references are not entered in the pending list and
4340 in the symbol table. */
4342 (*debug_swap
->swap_tir_in
) (bigend
,
4343 &(debug_info
->external_aux
4344 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4346 if (tir
.tq0
!= tqNil
)
4347 complaint (&symfile_complaints
,
4348 "illegal tq0 in forward typedef for %s", sym_name
);
4352 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4354 *pname
= "<undefined>";
4361 (debug_info
->external_aux
4362 + fh
->iauxBase
+ sh
.index
+ 1),
4363 tpp
, type_code
, pname
,
4364 fh
->fBigendian
, sym_name
);
4368 /* Follow a forward typedef. This might recursively
4369 call cross_ref till we get a non typedef'ed type.
4370 FIXME: This is not correct behaviour, but gdb currently
4371 cannot handle typedefs without type copying. Type
4372 copying is impossible as we might have mutual forward
4373 references between two files and the copied type would not
4374 get filled in when we later parse its definition. */
4375 *tpp
= parse_type (xref_fd
,
4376 debug_info
->external_aux
+ fh
->iauxBase
,
4380 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4381 add_pending (fh
, esh
, *tpp
);
4385 complaint (&symfile_complaints
,
4386 "illegal bt %d in forward typedef for %s", tir
.bt
,
4388 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
4394 else if (sh
.st
== stTypedef
)
4396 /* Parse the type for a normal typedef. This might recursively call
4397 cross_ref till we get a non typedef'ed type.
4398 FIXME: This is not correct behaviour, but gdb currently
4399 cannot handle typedefs without type copying. But type copying is
4400 impossible as we might have mutual forward references between
4401 two files and the copied type would not get filled in when
4402 we later parse its definition. */
4403 *tpp
= parse_type (xref_fd
,
4404 debug_info
->external_aux
+ fh
->iauxBase
,
4408 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4412 /* Cross reference to a struct/union/enum which is defined
4413 in another file in the same compilation unit but that file
4414 has not been parsed yet.
4415 Initialize the type only, it will be filled in when
4416 it's definition is parsed. */
4417 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
4419 add_pending (fh
, esh
, *tpp
);
4422 /* We used one auxent normally, two if we got a "next one" rf. */
4427 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4428 keeping the symtab sorted */
4430 static struct symbol
*
4431 mylookup_symbol (char *name
, register struct block
*block
,
4432 namespace_enum
namespace, enum address_class
class)
4438 ALL_BLOCK_SYMBOLS (block
, i
, sym
)
4440 if (SYMBOL_NAME (sym
)[0] == inc
4441 && SYMBOL_NAMESPACE (sym
) == namespace
4442 && SYMBOL_CLASS (sym
) == class
4443 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
4447 block
= BLOCK_SUPERBLOCK (block
);
4449 return mylookup_symbol (name
, block
, namespace, class);
4454 /* Add a new symbol S to a block B.
4455 Infrequently, we will need to reallocate the block to make it bigger.
4456 We only detect this case when adding to top_stack->cur_block, since
4457 that's the only time we know how big the block is. FIXME. */
4460 add_symbol (struct symbol
*s
, struct block
*b
)
4462 int nsyms
= BLOCK_NSYMS (b
)++;
4463 struct block
*origb
;
4464 struct parse_stack
*stackp
;
4466 if (b
== top_stack
->cur_block
&&
4467 nsyms
>= top_stack
->maxsyms
)
4469 complaint (&symfile_complaints
, "block containing %s overfilled",
4471 /* In this case shrink_block is actually grow_block, since
4472 BLOCK_NSYMS(b) is larger than its current size. */
4474 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
4476 /* Now run through the stack replacing pointers to the
4477 original block. shrink_block has already done this
4478 for the blockvector and BLOCK_FUNCTION. */
4479 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
4481 if (stackp
->cur_block
== origb
)
4483 stackp
->cur_block
= b
;
4484 stackp
->maxsyms
= BLOCK_NSYMS (b
);
4488 BLOCK_SYM (b
, nsyms
) = s
;
4491 /* Add a new block B to a symtab S */
4494 add_block (struct block
*b
, struct symtab
*s
)
4496 struct blockvector
*bv
= BLOCKVECTOR (s
);
4498 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4499 (sizeof (struct blockvector
)
4500 + BLOCKVECTOR_NBLOCKS (bv
)
4501 * sizeof (bv
->block
)));
4502 if (bv
!= BLOCKVECTOR (s
))
4503 BLOCKVECTOR (s
) = bv
;
4505 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4508 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4509 MIPS' linenumber encoding might need more than one byte
4510 to describe it, LAST is used to detect these continuation lines.
4512 Combining lines with the same line number seems like a bad idea.
4513 E.g: There could be a line number entry with the same line number after the
4514 prologue and GDB should not ignore it (this is a better way to find
4515 a prologue than mips_skip_prologue).
4516 But due to the compressed line table format there are line number entries
4517 for the same line which are needed to bridge the gap to the next
4518 line number entry. These entries have a bogus address info with them
4519 and we are unable to tell them from intended duplicate line number
4521 This is another reason why -ggdb debugging format is preferable. */
4524 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4526 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4527 Change them to something sensible. */
4531 last
= -2; /* make sure we record first line */
4533 if (last
== lineno
) /* skip continuation lines */
4536 lt
->item
[lt
->nitems
].line
= lineno
;
4537 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4541 /* Sorting and reordering procedures */
4543 /* Blocks with a smaller low bound should come first */
4546 compare_blocks (const void *arg1
, const void *arg2
)
4548 register int addr_diff
;
4549 struct block
**b1
= (struct block
**) arg1
;
4550 struct block
**b2
= (struct block
**) arg2
;
4552 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4554 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4558 /* Sort the blocks of a symtab S.
4559 Reorder the blocks in the blockvector by code-address,
4560 as required by some MI search routines */
4563 sort_blocks (struct symtab
*s
)
4565 struct blockvector
*bv
= BLOCKVECTOR (s
);
4567 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
4570 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4571 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4572 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4573 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4577 * This is very unfortunate: normally all functions are compiled in
4578 * the order they are found, but if the file is compiled -O3 things
4579 * are very different. It would be nice to find a reliable test
4580 * to detect -O3 images in advance.
4582 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
4583 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4584 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4585 sizeof (struct block
*),
4589 register CORE_ADDR high
= 0;
4590 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4592 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4593 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4594 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4595 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4598 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4599 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4601 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4602 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4603 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4604 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4608 /* Constructor/restructor/destructor procedures */
4610 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4611 MAXSYMS and linenumbers MAXLINES we'll put in it */
4613 static struct symtab
*
4614 new_symtab (char *name
, int maxsyms
, int maxlines
, struct objfile
*objfile
)
4616 struct symtab
*s
= allocate_symtab (name
, objfile
);
4618 LINETABLE (s
) = new_linetable (maxlines
);
4620 /* All symtabs must have at least two blocks */
4621 BLOCKVECTOR (s
) = new_bvect (2);
4622 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
4623 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
4624 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
4625 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4627 s
->free_code
= free_linetable
;
4628 s
->debugformat
= obsavestring ("ECOFF", 5,
4629 &objfile
->symbol_obstack
);
4633 /* Allocate a new partial_symtab NAME */
4635 static struct partial_symtab
*
4636 new_psymtab (char *name
, struct objfile
*objfile
)
4638 struct partial_symtab
*psymtab
;
4640 psymtab
= allocate_psymtab (name
, objfile
);
4641 psymtab
->section_offsets
= objfile
->section_offsets
;
4643 /* Keep a backpointer to the file's symbols */
4645 psymtab
->read_symtab_private
= ((char *)
4646 obstack_alloc (&objfile
->psymbol_obstack
,
4647 sizeof (struct symloc
)));
4648 memset (psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
4649 CUR_BFD (psymtab
) = cur_bfd
;
4650 DEBUG_SWAP (psymtab
) = debug_swap
;
4651 DEBUG_INFO (psymtab
) = debug_info
;
4652 PENDING_LIST (psymtab
) = pending_list
;
4654 /* The way to turn this into a symtab is to call... */
4655 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
4660 /* Allocate a linetable array of the given SIZE. Since the struct
4661 already includes one item, we subtract one when calculating the
4662 proper size to allocate. */
4664 static struct linetable
*
4665 new_linetable (int size
)
4667 struct linetable
*l
;
4669 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4670 l
= (struct linetable
*) xmalloc (size
);
4675 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4676 I am not so sure about the 3.4 ones.
4678 Since the struct linetable already includes one item, we subtract one when
4679 calculating the proper size to allocate. */
4681 static struct linetable
*
4682 shrink_linetable (struct linetable
*lt
)
4685 return (struct linetable
*) xrealloc ((void *) lt
,
4686 (sizeof (struct linetable
)
4688 * sizeof (lt
->item
))));
4691 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4693 static struct blockvector
*
4694 new_bvect (int nblocks
)
4696 struct blockvector
*bv
;
4699 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4700 bv
= (struct blockvector
*) xzalloc (size
);
4702 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4707 /* Allocate and zero a new block of MAXSYMS symbols */
4709 static struct block
*
4710 new_block (int maxsyms
)
4712 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4714 return (struct block
*) xzalloc (size
);
4717 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4718 Shrink_block can also be used by add_symbol to grow a block. */
4720 static struct block
*
4721 shrink_block (struct block
*b
, struct symtab
*s
)
4724 struct blockvector
*bv
= BLOCKVECTOR (s
);
4727 /* Just reallocate it and fix references to the old one */
4729 new = (struct block
*) xrealloc ((void *) b
,
4730 (sizeof (struct block
)
4731 + ((BLOCK_NSYMS (b
) - 1)
4732 * sizeof (struct symbol
*))));
4734 /* FIXME: Not worth hashing this block as it's built. */
4735 /* All callers should have created the block with new_block (), which
4736 would mean it was not previously hashed. Make sure. */
4737 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4739 /* Should chase pointers to old one. Fortunately, that`s just
4740 the block`s function and inferior blocks */
4741 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4742 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4743 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4744 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4745 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4746 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4747 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4751 /* Create a new symbol with printname NAME */
4753 static struct symbol
*
4754 new_symbol (char *name
)
4756 struct symbol
*s
= ((struct symbol
*)
4757 obstack_alloc (¤t_objfile
->symbol_obstack
,
4758 sizeof (struct symbol
)));
4760 memset (s
, 0, sizeof (*s
));
4761 SYMBOL_NAME (s
) = obsavestring (name
, strlen (name
),
4762 ¤t_objfile
->symbol_obstack
);
4763 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4764 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4768 /* Create a new type with printname NAME */
4770 static struct type
*
4771 new_type (char *name
)
4775 t
= alloc_type (current_objfile
);
4776 TYPE_NAME (t
) = name
;
4777 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4781 /* Read ECOFF debugging information from a BFD section. This is
4782 called from elfread.c. It parses the section into a
4783 ecoff_debug_info struct, and then lets the rest of the file handle
4787 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4788 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4790 bfd
*abfd
= objfile
->obfd
;
4791 struct ecoff_debug_info
*info
;
4793 info
= ((struct ecoff_debug_info
*)
4794 obstack_alloc (&objfile
->psymbol_obstack
,
4795 sizeof (struct ecoff_debug_info
)));
4797 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4798 error ("Error reading ECOFF debugging information: %s",
4799 bfd_errmsg (bfd_get_error ()));
4801 mdebug_build_psymtabs (objfile
, swap
, info
);
4805 /* Things used for calling functions in the inferior.
4806 These functions are exported to our companion
4807 mips-tdep.c file and are here because they play
4808 with the symbol-table explicitly. */
4810 /* Sigtramp: make sure we have all the necessary information
4811 about the signal trampoline code. Since the official code
4812 from MIPS does not do so, we make up that information ourselves.
4813 If they fix the library (unlikely) this code will neutralize itself. */
4815 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4816 here because it calls functions defined in this file, but perhaps
4817 this could be handled in a better way. Only compile it in when
4818 tm-mips.h is included. */
4823 fixup_sigtramp (void)
4827 struct block
*b
, *b0
= NULL
;
4829 sigtramp_address
= -1;
4831 /* We have to handle the following cases here:
4832 a) The Mips library has a sigtramp label within sigvec.
4833 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4834 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4837 b0
= SYMBOL_BLOCK_VALUE (s
);
4838 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4842 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4843 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4846 /* But maybe this program uses its own version of sigvec */
4850 /* Did we or MIPSco fix the library ? */
4851 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4853 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4854 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4858 sigtramp_address
= SYMBOL_VALUE (s
);
4859 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4861 /* But what symtab does it live in ? */
4862 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4865 * Ok, there goes the fix: turn it into a procedure, with all the
4866 * needed info. Note we make it a nested procedure of sigvec,
4867 * which is the way the (assembly) code is actually written.
4869 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4870 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4871 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4873 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4875 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4877 SYMBOL_BLOCK_VALUE (s
) = b
;
4878 BLOCK_START (b
) = sigtramp_address
;
4879 BLOCK_END (b
) = sigtramp_end
;
4880 BLOCK_FUNCTION (b
) = s
;
4881 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4885 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4887 struct mips_extra_func_info
*e
=
4888 ((struct mips_extra_func_info
*)
4889 xzalloc (sizeof (struct mips_extra_func_info
)));
4891 e
->numargs
= 0; /* the kernel thinks otherwise */
4892 e
->pdr
.frameoffset
= 32;
4893 e
->pdr
.framereg
= SP_REGNUM
;
4894 /* Note that setting pcreg is no longer strictly necessary as
4895 mips_frame_saved_pc is now aware of signal handler frames. */
4896 e
->pdr
.pcreg
= PC_REGNUM
;
4897 e
->pdr
.regmask
= -2;
4898 /* Offset to saved r31, in the sigtramp case the saved registers
4899 are above the frame in the sigcontext.
4900 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4901 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4902 and 32 * 4 bytes for the floating point registers. */
4903 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4904 e
->pdr
.fregmask
= -1;
4905 /* Offset to saved f30 (first saved *double* register). */
4906 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4907 e
->pdr
.isym
= (long) s
;
4908 e
->pdr
.adr
= sigtramp_address
;
4910 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4911 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4912 SYMBOL_VALUE (s
) = (long) e
;
4913 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4914 SYMBOL_CLASS (s
) = LOC_CONST
;
4915 SYMBOL_TYPE (s
) = mdebug_type_void
;
4916 current_objfile
= NULL
;
4919 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4922 #endif /* TM_MIPS_H */
4925 _initialize_mdebugread (void)
4928 init_type (TYPE_CODE_VOID
, 1,
4930 "void", (struct objfile
*) NULL
);
4932 init_type (TYPE_CODE_INT
, 1,
4934 "char", (struct objfile
*) NULL
);
4935 mdebug_type_unsigned_char
=
4936 init_type (TYPE_CODE_INT
, 1,
4938 "unsigned char", (struct objfile
*) NULL
);
4940 init_type (TYPE_CODE_INT
, 2,
4942 "short", (struct objfile
*) NULL
);
4943 mdebug_type_unsigned_short
=
4944 init_type (TYPE_CODE_INT
, 2,
4946 "unsigned short", (struct objfile
*) NULL
);
4947 mdebug_type_int_32
=
4948 init_type (TYPE_CODE_INT
, 4,
4950 "int", (struct objfile
*) NULL
);
4951 mdebug_type_unsigned_int_32
=
4952 init_type (TYPE_CODE_INT
, 4,
4954 "unsigned int", (struct objfile
*) NULL
);
4955 mdebug_type_int_64
=
4956 init_type (TYPE_CODE_INT
, 8,
4958 "int", (struct objfile
*) NULL
);
4959 mdebug_type_unsigned_int_64
=
4960 init_type (TYPE_CODE_INT
, 8,
4962 "unsigned int", (struct objfile
*) NULL
);
4963 mdebug_type_long_32
=
4964 init_type (TYPE_CODE_INT
, 4,
4966 "long", (struct objfile
*) NULL
);
4967 mdebug_type_unsigned_long_32
=
4968 init_type (TYPE_CODE_INT
, 4,
4970 "unsigned long", (struct objfile
*) NULL
);
4971 mdebug_type_long_64
=
4972 init_type (TYPE_CODE_INT
, 8,
4974 "long", (struct objfile
*) NULL
);
4975 mdebug_type_unsigned_long_64
=
4976 init_type (TYPE_CODE_INT
, 8,
4978 "unsigned long", (struct objfile
*) NULL
);
4979 mdebug_type_long_long_64
=
4980 init_type (TYPE_CODE_INT
, 8,
4982 "long long", (struct objfile
*) NULL
);
4983 mdebug_type_unsigned_long_long_64
=
4984 init_type (TYPE_CODE_INT
, 8,
4986 "unsigned long long", (struct objfile
*) NULL
);
4987 mdebug_type_adr_32
=
4988 init_type (TYPE_CODE_PTR
, 4,
4990 "adr_32", (struct objfile
*) NULL
);
4991 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4992 mdebug_type_adr_64
=
4993 init_type (TYPE_CODE_PTR
, 8,
4995 "adr_64", (struct objfile
*) NULL
);
4996 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4998 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
5000 "float", (struct objfile
*) NULL
);
5001 mdebug_type_double
=
5002 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5004 "double", (struct objfile
*) NULL
);
5005 mdebug_type_complex
=
5006 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
5008 "complex", (struct objfile
*) NULL
);
5009 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
5010 mdebug_type_double_complex
=
5011 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5013 "double complex", (struct objfile
*) NULL
);
5014 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
5016 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5018 mdebug_type_string
=
5019 init_type (TYPE_CODE_STRING
,
5020 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
5022 (struct objfile
*) NULL
);
5024 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5025 good? Would we be better off with TYPE_CODE_ERROR? Should
5026 TYPE_CODE_ERROR print things in hex if it knows the size? */
5027 mdebug_type_fixed_dec
=
5028 init_type (TYPE_CODE_INT
,
5029 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
5031 (struct objfile
*) NULL
);
5033 mdebug_type_float_dec
=
5034 init_type (TYPE_CODE_ERROR
,
5035 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
5036 0, "floating decimal",
5037 (struct objfile
*) NULL
);
5039 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
5040 "<function, no debug info>", NULL
);
5041 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
5042 nodebug_var_symbol_type
=
5043 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
5044 "<variable, no debug info>", NULL
);