1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2020 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 3 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, see <http://www.gnu.org/licenses/>. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
46 #include "filenames.h"
48 #include "gdb_obstack.h"
49 #include "buildsym-legacy.h"
50 #include "stabsread.h"
51 #include "complaints.h"
53 #include "gdb-demangle.h"
55 #include "dictionary.h"
56 #include "mdebugread.h"
63 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
65 #include "libaout.h" /* Private BFD a.out information. */
66 #include "aout/aout64.h"
67 #include "aout/stab_gnu.h" /* STABS information. */
69 #include "expression.h"
73 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
74 We use this define in order to know whether we should override a
75 symbol's ECOFF section with its ELF section. This is necessary in
76 case the symbol's ELF section could not be represented in ECOFF. */
77 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
78 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
80 /* The objfile we are currently reading. */
82 static struct objfile
*mdebugread_objfile
;
86 /* We put a pointer to this structure in the read_symtab_private field
91 /* Index of the FDR that this psymtab represents. */
93 /* The BFD that the psymtab was created from. */
95 const struct ecoff_debug_swap
*debug_swap
;
96 struct ecoff_debug_info
*debug_info
;
97 struct mdebug_pending
**pending_list
;
98 /* Pointer to external symbols for this file. */
100 /* Size of extern_tab. */
102 enum language pst_language
;
105 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
106 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
107 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
108 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
109 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
110 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
112 #define SC_IS_TEXT(sc) ((sc) == scText \
113 || (sc) == scRConst \
116 #define SC_IS_DATA(sc) ((sc) == scData \
121 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
122 #define SC_IS_BSS(sc) ((sc) == scBss)
123 #define SC_IS_SBSS(sc) ((sc) == scSBss)
124 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
126 /* Various complaints about symbol reading that don't abort the process. */
128 index_complaint (const char *arg1
)
130 complaint (_("bad aux index at symbol %s"), arg1
);
134 unknown_ext_complaint (const char *arg1
)
136 complaint (_("unknown external symbol %s"), arg1
);
140 basic_type_complaint (int arg1
, const char *arg2
)
142 complaint (_("cannot map ECOFF basic type 0x%x for %s"),
147 bad_tag_guess_complaint (const char *arg1
)
149 complaint (_("guessed tag type of %s incorrectly"), arg1
);
153 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
155 complaint (_("bad rfd entry for %s: file %d, index %d"),
160 unexpected_type_code_complaint (const char *arg1
)
162 complaint (_("unexpected type code for %s"), arg1
);
165 /* Macros and extra defs. */
167 /* Puns: hard to find whether -g was used and how. */
169 #define MIN_GLEVEL GLEVEL_0
170 #define compare_glevel(a,b) \
171 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
172 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
174 /* Things that really are local to this module. */
176 /* Remember what we deduced to be the source language of this psymtab. */
178 static enum language psymtab_language
= language_unknown
;
184 /* How to parse debugging information for CUR_BFD. */
186 static const struct ecoff_debug_swap
*debug_swap
;
188 /* Pointers to debugging information for CUR_BFD. */
190 static struct ecoff_debug_info
*debug_info
;
192 /* Pointer to current file descriptor record, and its index. */
197 /* Index of current symbol. */
201 /* Note how much "debuggable" this image is. We would like
202 to see at least one FDR with full symbols. */
204 static int max_gdbinfo
;
205 static int max_glevel
;
207 /* When examining .o files, report on undefined symbols. */
209 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
211 /* Pseudo symbol to use when putting stabs into the symbol table. */
213 static char stabs_symbol
[] = STABS_SYMBOL
;
215 /* Nonzero if we have seen ecoff debugging info for a file. */
217 static int found_ecoff_debugging_info
;
219 /* Forward declarations. */
221 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
224 static void parse_partial_symbols (minimal_symbol_reader
&,
227 static int has_opaque_xref (FDR
*, SYMR
*);
229 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
230 const char **, int, const char *);
232 static struct symbol
*new_symbol (const char *);
234 static struct type
*new_type (char *);
236 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
238 static struct block
*new_block (enum block_type
, enum language
);
240 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
242 static struct linetable
*new_linetable (int);
244 static struct blockvector
*new_bvect (int);
246 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
249 static struct symbol
*mylookup_symbol (const char *, const struct block
*,
250 domain_enum
, enum address_class
);
252 static void sort_blocks (struct symtab
*);
254 static legacy_psymtab
*new_psymtab (const char *, struct objfile
*);
256 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
257 legacy_psymtab
*, const char *);
259 static void add_block (struct block
*, struct symtab
*);
261 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
263 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
265 static struct linetable
*shrink_linetable (struct linetable
*);
267 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
270 static const char *mdebug_next_symbol_text (struct objfile
*);
272 /* Exported procedure: Builds a symtab from the partial symtab SELF.
273 Restores the environment in effect when SELF was created, delegates
274 most of the work to an ancillary procedure, and sorts
275 and reorders the symtab list at the end. SELF is not NULL. */
278 mdebug_read_symtab (legacy_psymtab
*self
, struct objfile
*objfile
)
282 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
283 gdb_flush (gdb_stdout
);
286 next_symbol_text_func
= mdebug_next_symbol_text
;
288 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
290 /* Match with global symbols. This only needs to be done once,
291 after all of the symtabs and dependencies have been read in. */
292 scan_file_globals (objfile
);
295 printf_filtered (_("done.\n"));
298 /* File-level interface functions. */
300 /* Find a file descriptor given its index RF relative to a file CF. */
303 get_rfd (int cf
, int rf
)
309 fdrs
= debug_info
->fdr
;
311 /* Object files do not have the RFD table, all refs are absolute. */
314 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
315 ((char *) debug_info
->external_rfd
317 * debug_swap
->external_rfd_size
)),
322 /* Return a safer print NAME for a file descriptor. */
328 return "<stripped file>";
331 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
335 /* Read in and parse the symtab of the file OBJFILE. Symbols from
336 different sections are relocated via the SECTION_OFFSETS. */
339 mdebug_build_psymtabs (minimal_symbol_reader
&reader
,
340 struct objfile
*objfile
,
341 const struct ecoff_debug_swap
*swap
,
342 struct ecoff_debug_info
*info
)
344 cur_bfd
= objfile
->obfd
;
348 stabsread_new_init ();
349 free_header_files ();
350 init_header_files ();
352 /* Make sure all the FDR information is swapped in. */
353 if (info
->fdr
== NULL
)
359 info
->fdr
= (FDR
*) XOBNEWVEC (&objfile
->objfile_obstack
, FDR
,
360 info
->symbolic_header
.ifdMax
);
361 fdr_src
= (char *) info
->external_fdr
;
363 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
365 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
366 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
369 parse_partial_symbols (reader
, objfile
);
372 /* Check to make sure file was compiled with -g. If not, warn the
373 user of this limitation. */
374 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
376 if (max_gdbinfo
== 0)
377 printf_unfiltered (_("\n%s not compiled with -g, "
378 "debugging support is limited.\n"),
380 printf_unfiltered (_("You should compile with -g2 or "
381 "-g3 for best debugging support.\n"));
386 /* Local utilities */
388 /* Map of FDR indexes to partial symtabs. */
392 legacy_psymtab
*pst
; /* the psymtab proper */
393 long n_globals
; /* exported globals (external symbols) */
394 long globals_offset
; /* cumulative */
398 /* Utility stack, used to nest procedures and blocks properly.
399 It is a doubly linked list, to avoid too many alloc/free.
400 Since we might need it quite a few times it is NOT deallocated
403 static struct parse_stack
405 struct parse_stack
*next
, *prev
;
406 struct symtab
*cur_st
; /* Current symtab. */
407 struct block
*cur_block
; /* Block in it. */
409 /* What are we parsing. stFile, or stBlock are for files and
410 blocks. stProc or stStaticProc means we have seen the start of a
411 procedure, but not the start of the block within in. When we see
412 the start of that block, we change it to stNil, without pushing a
413 new block, i.e. stNil means both a procedure and a block. */
417 struct type
*cur_type
; /* Type we parse fields for. */
418 int cur_field
; /* Field number in cur_type. */
419 CORE_ADDR procadr
; /* Start addres of this procedure. */
420 int numargs
; /* Its argument count. */
423 *top_stack
; /* Top stack ptr */
426 /* Enter a new lexical context. */
429 push_parse_stack (void)
431 struct parse_stack
*newobj
;
433 /* Reuse frames if possible. */
434 if (top_stack
&& top_stack
->prev
)
435 newobj
= top_stack
->prev
;
437 newobj
= XCNEW (struct parse_stack
);
438 /* Initialize new frame with previous content. */
441 struct parse_stack
*prev
= newobj
->prev
;
443 *newobj
= *top_stack
;
444 top_stack
->prev
= newobj
;
446 newobj
->next
= top_stack
;
451 /* Exit a lexical context. */
454 pop_parse_stack (void)
459 top_stack
= top_stack
->next
;
463 /* Cross-references might be to things we haven't looked at
464 yet, e.g. type references. To avoid too many type
465 duplications we keep a quick fixup table, an array
466 of lists of references indexed by file descriptor. */
468 struct mdebug_pending
470 struct mdebug_pending
*next
; /* link */
471 char *s
; /* the unswapped symbol */
472 struct type
*t
; /* its partial type descriptor */
476 /* The pending information is kept for an entire object file. We
477 allocate the pending information table when we create the partial
478 symbols, and we store a pointer to the single table in each
481 static struct mdebug_pending
**pending_list
;
483 /* Check whether we already saw symbol SH in file FH. */
485 static struct mdebug_pending
*
486 is_pending_symbol (FDR
*fh
, char *sh
)
488 int f_idx
= fh
- debug_info
->fdr
;
489 struct mdebug_pending
*p
;
491 /* Linear search is ok, list is typically no more than 10 deep. */
492 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
498 /* Add a new symbol SH of type T. */
501 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
503 int f_idx
= fh
- debug_info
->fdr
;
504 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
506 /* Make sure we do not make duplicates. */
509 p
= XOBNEW (&mdebugread_objfile
->objfile_obstack
, mdebug_pending
);
512 p
->next
= pending_list
[f_idx
];
513 pending_list
[f_idx
] = p
;
518 /* Parsing Routines proper. */
521 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
523 complaint (_("bad register number %d (max %d) in symbol %s"),
524 regnum
, num_regs
- 1, sym
);
527 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
528 For blocks, procedures and types we open a new lexical context.
529 This is basically just a big switch on the symbol's type. Argument
530 AX is the base pointer of aux symbols for this file (fh->iauxBase).
531 EXT_SH points to the unswapped symbol, which is needed for struct,
532 union, etc., types; it is NULL for an EXTR. BIGEND says whether
533 aux symbols are big-endian or little-endian. Return count of
534 SYMR's handled (normally one). */
537 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
539 int regno
= gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
541 if (regno
< 0 || regno
>= gdbarch_num_cooked_regs (gdbarch
))
543 reg_value_complaint (regno
, gdbarch_num_cooked_regs (gdbarch
),
546 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
552 static const struct symbol_register_ops mdebug_register_funcs
= {
556 /* The "aclass" indices for computed symbols. */
558 static int mdebug_register_index
;
559 static int mdebug_regparm_index
;
561 /* Common code for symbols describing data. */
564 add_data_symbol (SYMR
*sh
, union aux_ext
*ax
, int bigend
,
565 struct symbol
*s
, int aclass_index
, struct block
*b
,
566 struct objfile
*objfile
, const char *name
)
568 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
569 SYMBOL_ACLASS_INDEX (s
) = aclass_index
;
570 add_symbol (s
, top_stack
->cur_st
, b
);
572 /* Type could be missing if file is compiled without debugging info. */
573 if (SC_IS_UNDEF (sh
->sc
)
574 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
575 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
577 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
578 /* Value of a data symbol is its memory address. */
582 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
583 const section_offsets
§ion_offsets
, struct objfile
*objfile
)
585 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
586 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
587 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
591 struct mdebug_pending
*pend
;
595 long svalue
= sh
->value
;
599 name
= debug_info
->ssext
+ sh
->iss
;
601 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
607 /* Do not relocate relative values.
608 The value of a stEnd symbol is the displacement from the
609 corresponding start symbol value.
610 The value of a stBlock symbol is the displacement from the
611 procedure address. */
612 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
613 sh
->value
+= section_offsets
[SECT_OFF_TEXT (objfile
)];
620 sh
->value
+= section_offsets
[SECT_OFF_DATA (objfile
)];
624 sh
->value
+= section_offsets
[SECT_OFF_BSS (objfile
)];
633 case stGlobal
: /* External symbol, goes into global block. */
634 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
636 s
= new_symbol (name
);
637 SET_SYMBOL_VALUE_ADDRESS (s
, (CORE_ADDR
) sh
->value
);
638 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
641 case stStatic
: /* Static data, goes into current block. */
642 b
= top_stack
->cur_block
;
643 s
= new_symbol (name
);
644 if (SC_IS_COMMON (sh
->sc
))
646 /* It is a FORTRAN common block. At least for SGI Fortran the
647 address is not in the symbol; we need to fix it later in
648 scan_file_globals. */
649 int bucket
= hashname (s
->linkage_name ());
650 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
651 global_sym_chain
[bucket
] = s
;
654 SET_SYMBOL_VALUE_ADDRESS (s
, (CORE_ADDR
) sh
->value
);
655 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
658 case stLocal
: /* Local variable, goes into current block. */
659 b
= top_stack
->cur_block
;
660 s
= new_symbol (name
);
661 SYMBOL_VALUE (s
) = svalue
;
662 if (sh
->sc
== scRegister
)
663 add_data_symbol (sh
, ax
, bigend
, s
, mdebug_register_index
,
666 add_data_symbol (sh
, ax
, bigend
, s
, LOC_LOCAL
,
670 case stParam
: /* Arg to procedure, goes into current
673 found_ecoff_debugging_info
= 1;
674 top_stack
->numargs
++;
676 /* Special GNU C++ name. */
677 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
678 name
= "this"; /* FIXME, not alloc'd in obstack. */
679 s
= new_symbol (name
);
681 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
682 SYMBOL_IS_ARGUMENT (s
) = 1;
686 /* Pass by value in register. */
687 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
690 /* Pass by reference on stack. */
691 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
694 /* Pass by reference in register. */
695 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
698 /* Pass by value on stack. */
699 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
702 SYMBOL_VALUE (s
) = svalue
;
703 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
704 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
707 case stLabel
: /* label, goes into current block. */
708 s
= new_symbol (name
);
709 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
710 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
711 SET_SYMBOL_VALUE_ADDRESS (s
, (CORE_ADDR
) sh
->value
);
712 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
713 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
716 case stProc
: /* Procedure, usually goes into global block. */
717 case stStaticProc
: /* Static procedure, goes into current block. */
718 /* For stProc symbol records, we need to check the storage class
719 as well, as only (stProc, scText) entries represent "real"
720 procedures - See the Compaq document titled "Object File /
721 Symbol Table Format Specification" for more information.
722 If the storage class is not scText, we discard the whole block
723 of symbol records for this stProc. */
724 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
726 char *ext_tsym
= ext_sh
;
727 int keep_counting
= 1;
730 while (keep_counting
)
732 ext_tsym
+= external_sym_size
;
733 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
743 complaint (_("unknown symbol type 0x%x"), sh
->st
);
749 s
= new_symbol (name
);
750 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
751 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
752 /* Type of the return value. */
753 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
754 t
= objfile_type (objfile
)->builtin_int
;
757 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
758 if (strcmp (name
, "malloc") == 0
759 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
761 /* I don't know why, but, at least under Alpha GNU/Linux,
762 when linking against a malloc without debugging
763 symbols, its read as a function returning void---this
764 is bad because it means we cannot call functions with
765 string arguments interactively; i.e., "call
766 printf("howdy\n")" would fail with the error message
767 "program has no memory available". To avoid this, we
768 patch up the type and make it void*
769 instead. (davidm@azstarnet.com). */
770 t
= make_pointer_type (t
, NULL
);
773 b
= top_stack
->cur_block
;
774 if (sh
->st
== stProc
)
776 const struct blockvector
*bv
777 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
779 /* The next test should normally be true, but provides a
780 hook for nested functions (which we don't want to make
782 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
783 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
784 /* Irix 5 sometimes has duplicate names for the same
785 function. We want to add such names up at the global
786 level, not as a nested function. */
787 else if (sh
->value
== top_stack
->procadr
)
788 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
790 add_symbol (s
, top_stack
->cur_st
, b
);
792 /* Make a type for the procedure itself. */
793 SYMBOL_TYPE (s
) = lookup_function_type (t
);
795 /* All functions in C++ have prototypes. For C we don't have enough
796 information in the debug info. */
797 if (s
->language () == language_cplus
)
798 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
800 /* Create and enter a new lexical context. */
801 b
= new_block (FUNCTION_BLOCK
, s
->language ());
802 SYMBOL_BLOCK_VALUE (s
) = b
;
803 BLOCK_FUNCTION (b
) = s
;
804 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
805 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
806 add_block (b
, top_stack
->cur_st
);
808 /* Not if we only have partial info. */
809 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
813 top_stack
->cur_block
= b
;
814 top_stack
->blocktype
= sh
->st
;
815 top_stack
->cur_type
= SYMBOL_TYPE (s
);
816 top_stack
->cur_field
= -1;
817 top_stack
->procadr
= sh
->value
;
818 top_stack
->numargs
= 0;
821 /* Beginning of code for structure, union, and enum definitions.
822 They all share a common set of local variables, defined here. */
824 enum type_code type_code
;
830 case stStruct
: /* Start a block defining a struct type. */
831 type_code
= TYPE_CODE_STRUCT
;
832 goto structured_common
;
834 case stUnion
: /* Start a block defining a union type. */
835 type_code
= TYPE_CODE_UNION
;
836 goto structured_common
;
838 case stEnum
: /* Start a block defining an enum type. */
839 type_code
= TYPE_CODE_ENUM
;
840 goto structured_common
;
842 case stBlock
: /* Either a lexical block, or some type. */
843 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
844 goto case_stBlock_code
; /* Lexical block */
846 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
848 /* Common code for handling struct, union, enum, and/or as-yet-
849 unknown-type blocks of info about structured data. `type_code'
850 has been set to the proper TYPE_CODE, if we know it. */
852 found_ecoff_debugging_info
= 1;
854 top_stack
->blocktype
= stBlock
;
856 /* First count the number of fields and the highest value. */
859 for (ext_tsym
= ext_sh
+ external_sym_size
;
861 ext_tsym
+= external_sym_size
)
865 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
870 /* C++ encodes class types as structures where there the
871 methods are encoded as stProc. The scope of stProc
872 symbols also ends with stEnd, thus creating a risk of
873 taking the wrong stEnd symbol record as the end of
874 the current struct, which would cause GDB to undercount
875 the real number of fields in this struct. To make sure
876 we really reached the right stEnd symbol record, we
877 check the associated name, and match it against the
878 struct name. Since method names are mangled while
879 the class name is not, there is no risk of having a
880 method whose name is identical to the class name
881 (in particular constructor method names are different
882 from the class name). There is therefore no risk that
883 this check stops the count on the StEnd of a method.
885 Also, assume that we're really at the end when tsym.iss
887 if (tsym
.iss
== issNull
888 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
894 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
896 /* If the type of the member is Nil (or Void),
897 without qualifiers, assume the tag is an
899 Alpha cc -migrate enums are recognized by a zero
900 index and a zero symbol value.
901 DU 4.0 cc enums are recognized by a member type of
902 btEnum without qualifiers and a zero symbol value. */
903 if (tsym
.index
== indexNil
904 || (tsym
.index
== 0 && sh
->value
== 0))
905 type_code
= TYPE_CODE_ENUM
;
908 (*debug_swap
->swap_tir_in
) (bigend
,
909 &ax
[tsym
.index
].a_ti
,
911 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
912 || (tir
.bt
== btEnum
&& sh
->value
== 0))
914 type_code
= TYPE_CODE_ENUM
;
918 if (tsym
.value
> max_value
)
919 max_value
= tsym
.value
;
928 /* This is a no-op; is it trying to tell us something
929 we should be checking? */
930 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
934 /* This is something like a struct within a
935 struct. Skip over the fields of the inner
936 struct. The -1 is because the for loop will
937 increment ext_tsym. */
938 ext_tsym
= ((char *) debug_info
->external_sym
939 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
940 * external_sym_size
));
946 /* mips cc puts out a typedef for struct x if it is not yet
947 defined when it encounters
948 struct y { struct x *xp; };
953 /* Irix5 cc puts out a stIndirect for struct x if it is not
954 yet defined when it encounters
955 struct y { struct x *xp; };
960 complaint (_("declaration block contains "
961 "unhandled symbol type %d"),
967 /* In an stBlock, there is no way to distinguish structs,
968 unions, and enums at this point. This is a bug in the
969 original design (that has been fixed with the recent
970 addition of the stStruct, stUnion, and stEnum symbol
971 types.) The way you can tell is if/when you see a variable
972 or field of that type. In that case the variable's type
973 (in the AUX table) says if the type is struct, union, or
974 enum, and points back to the stBlock here. So you can
975 patch the tag kind up later - but only if there actually is
976 a variable or field of that type.
978 So until we know for sure, we will guess at this point.
980 If the first member has index==indexNil or a void type,
981 assume we have an enumeration.
982 Otherwise, if there is more than one member, and all
983 the members have offset 0, assume we have a union.
984 Otherwise, assume we have a struct.
986 The heuristic could guess wrong in the case of of an
987 enumeration with no members or a union with one (or zero)
988 members, or when all except the last field of a struct have
989 width zero. These are uncommon and/or illegal situations,
990 and in any case guessing wrong probably doesn't matter
993 But if we later do find out we were wrong, we fixup the tag
994 kind. Members of an enumeration must be handled
995 differently from struct/union fields, and that is harder to
996 patch up, but luckily we shouldn't need to. (If there are
997 any enumeration members, we can tell for sure it's an enum
1000 if (type_code
== TYPE_CODE_UNDEF
)
1002 if (nfields
> 1 && max_value
== 0)
1003 type_code
= TYPE_CODE_UNION
;
1005 type_code
= TYPE_CODE_STRUCT
;
1008 /* Create a new type or use the pending type. */
1009 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1012 t
= new_type (NULL
);
1013 add_pending (cur_fdr
, ext_sh
, t
);
1018 /* Do not set the tag name if it is a compiler generated tag name
1019 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1020 Alpha cc puts out an sh->iss of zero for those. */
1021 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1022 TYPE_NAME (t
) = NULL
;
1024 TYPE_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1025 name
, (char *) NULL
);
1027 TYPE_CODE (t
) = type_code
;
1028 TYPE_LENGTH (t
) = sh
->value
;
1029 TYPE_NFIELDS (t
) = nfields
;
1030 TYPE_FIELDS (t
) = f
= ((struct field
*)
1032 nfields
* sizeof (struct field
)));
1034 if (type_code
== TYPE_CODE_ENUM
)
1036 int unsigned_enum
= 1;
1038 /* This is a non-empty enum. */
1040 /* DEC c89 has the number of enumerators in the sh.value field,
1041 not the type length, so we have to compensate for that
1042 incompatibility quirk.
1043 This might do the wrong thing for an enum with one or two
1044 enumerators and gcc -gcoff -fshort-enums, but these cases
1045 are hopefully rare enough.
1046 Alpha cc -migrate has a sh.value field of zero, we adjust
1048 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1049 || TYPE_LENGTH (t
) == 0)
1050 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1051 for (ext_tsym
= ext_sh
+ external_sym_size
;
1053 ext_tsym
+= external_sym_size
)
1056 struct symbol
*enum_sym
;
1058 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1060 if (tsym
.st
!= stMember
)
1063 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1064 FIELD_TYPE (*f
) = t
;
1065 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1066 FIELD_BITSIZE (*f
) = 0;
1068 enum_sym
= allocate_symbol (mdebugread_objfile
);
1069 enum_sym
->set_linkage_name
1070 (obstack_strdup (&mdebugread_objfile
->objfile_obstack
,
1072 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1073 SYMBOL_TYPE (enum_sym
) = t
;
1074 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1075 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1076 if (SYMBOL_VALUE (enum_sym
) < 0)
1078 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1080 /* Skip the stMembers that we've handled. */
1085 TYPE_UNSIGNED (t
) = 1;
1087 /* Make this the current type. */
1088 top_stack
->cur_type
= t
;
1089 top_stack
->cur_field
= 0;
1091 /* Do not create a symbol for alpha cc unnamed structs. */
1095 /* gcc puts out an empty struct for an opaque struct definitions,
1096 do not create a symbol for it either. */
1097 if (TYPE_NFIELDS (t
) == 0)
1103 s
= new_symbol (name
);
1104 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1105 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1106 SYMBOL_VALUE (s
) = 0;
1107 SYMBOL_TYPE (s
) = t
;
1108 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1111 /* End of local variables shared by struct, union, enum, and
1112 block (as yet unknown struct/union/enum) processing. */
1116 found_ecoff_debugging_info
= 1;
1117 /* Beginnning of (code) block. Value of symbol
1118 is the displacement from procedure start. */
1119 push_parse_stack ();
1121 /* Do not start a new block if this is the outermost block of a
1122 procedure. This allows the LOC_BLOCK symbol to point to the
1123 block with the local variables, so funcname::var works. */
1124 if (top_stack
->blocktype
== stProc
1125 || top_stack
->blocktype
== stStaticProc
)
1127 top_stack
->blocktype
= stNil
;
1131 top_stack
->blocktype
= stBlock
;
1132 b
= new_block (NON_FUNCTION_BLOCK
, psymtab_language
);
1133 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1134 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1135 top_stack
->cur_block
= b
;
1136 add_block (b
, top_stack
->cur_st
);
1139 case stEnd
: /* end (of anything) */
1140 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1142 /* Finished with type */
1143 top_stack
->cur_type
= 0;
1145 else if (sh
->sc
== scText
&&
1146 (top_stack
->blocktype
== stProc
||
1147 top_stack
->blocktype
== stStaticProc
))
1149 /* Finished with procedure */
1150 const struct blockvector
*bv
1151 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1152 struct mdebug_extra_func_info
*e
;
1153 struct block
*cblock
= top_stack
->cur_block
;
1154 struct type
*ftype
= top_stack
->cur_type
;
1157 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1159 /* Make up special symbol to contain procedure specific info. */
1160 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1161 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1162 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1163 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1164 e
= OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
1165 mdebug_extra_func_info
);
1166 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1167 e
->numargs
= top_stack
->numargs
;
1168 e
->pdr
.framereg
= -1;
1169 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1171 /* f77 emits proc-level with address bounds==[0,0],
1172 So look for such child blocks, and patch them. */
1173 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1175 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1177 if (BLOCK_SUPERBLOCK (b_bad
) == cblock
1178 && BLOCK_START (b_bad
) == top_stack
->procadr
1179 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1181 BLOCK_START (b_bad
) = BLOCK_START (cblock
);
1182 BLOCK_END (b_bad
) = BLOCK_END (cblock
);
1186 if (TYPE_NFIELDS (ftype
) <= 0)
1188 /* No parameter type information is recorded with the function's
1189 type. Set that from the type of the parameter symbols. */
1190 int nparams
= top_stack
->numargs
;
1196 struct block_iterator iter
;
1198 TYPE_NFIELDS (ftype
) = nparams
;
1199 TYPE_FIELDS (ftype
) = (struct field
*)
1200 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1203 ALL_BLOCK_SYMBOLS (cblock
, iter
, sym
)
1205 if (iparams
== nparams
)
1208 if (SYMBOL_IS_ARGUMENT (sym
))
1210 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1211 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1218 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1220 /* End of (code) block. The value of the symbol is the
1221 displacement from the procedure`s start address of the
1222 end of this block. */
1223 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1225 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1227 /* End of outermost block. Pop parse stack and ignore. The
1228 following stEnd of stProc will take care of the block. */
1231 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1233 /* End of file. Pop parse stack and ignore. Higher
1234 level code deals with this. */
1238 complaint (_("stEnd with storage class %d not handled"), sh
->sc
);
1240 pop_parse_stack (); /* Restore previous lexical context. */
1243 case stMember
: /* member of struct or union */
1246 = &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1247 FIELD_NAME (*f
) = name
;
1248 SET_FIELD_BITPOS (*f
, sh
->value
);
1250 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1251 &bitsize
, bigend
, name
);
1252 FIELD_BITSIZE (*f
) = bitsize
;
1256 case stIndirect
: /* forward declaration on Irix5 */
1257 /* Forward declarations from Irix5 cc are handled by cross_ref,
1261 case stTypedef
: /* type definition */
1262 found_ecoff_debugging_info
= 1;
1264 /* Typedefs for forward declarations and opaque structs from alpha cc
1265 are handled by cross_ref, skip them. */
1269 /* Parse the type or use the pending type. */
1270 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1273 t
= parse_type (cur_fd
, ax
, sh
->index
, NULL
, bigend
, name
);
1274 add_pending (cur_fdr
, ext_sh
, t
);
1279 /* Mips cc puts out a typedef with the name of the struct for forward
1280 declarations. These should not go into the symbol table and
1281 TYPE_NAME should not be set for them.
1282 They can't be distinguished from an intentional typedef to
1283 the same name however:
1285 struct x { int ix; int jx; };
1289 struct xx {int ixx; int jxx; };
1290 generates a cross referencing stTypedef for x and xx.
1291 The user visible effect of this is that the type of a pointer
1292 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1293 The problem is fixed with alpha cc and Irix5 cc. */
1295 /* However if the typedef cross references to an opaque aggregate, it
1296 is safe to omit it from the symbol table. */
1298 if (has_opaque_xref (cur_fdr
, sh
))
1300 s
= new_symbol (name
);
1301 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1302 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1303 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1304 SYMBOL_TYPE (s
) = t
;
1305 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1307 /* Incomplete definitions of structs should not get a name. */
1308 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1309 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1310 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1311 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1313 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1314 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1316 /* If we are giving a name to a type such as "pointer to
1317 foo" or "function returning foo", we better not set
1318 the TYPE_NAME. If the program contains "typedef char
1319 *caddr_t;", we don't want all variables of type char
1320 * to print as caddr_t. This is not just a
1321 consequence of GDB's type management; CC and GCC (at
1322 least through version 2.4) both output variables of
1323 either type char * or caddr_t with the type
1324 refering to the stTypedef symbol for caddr_t. If a future
1325 compiler cleans this up it GDB is not ready for it
1326 yet, but if it becomes ready we somehow need to
1327 disable this check (without breaking the PCC/GCC2.4
1332 Fortunately, this check seems not to be necessary
1333 for anything except pointers or functions. */
1336 TYPE_NAME (SYMBOL_TYPE (s
)) = s
->linkage_name ();
1340 case stFile
: /* file name */
1341 push_parse_stack ();
1342 top_stack
->blocktype
= sh
->st
;
1345 /* I`ve never seen these for C */
1347 break; /* register relocation */
1349 break; /* forwarding address */
1351 break; /* constant */
1353 complaint (_("unknown symbol type 0x%x"), sh
->st
);
1362 static const struct objfile_key
<struct type
*,
1363 gdb::noop_deleter
<struct type
*>>
1366 static struct type
*
1367 basic_type (int bt
, struct objfile
*objfile
)
1369 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
1370 struct type
**map_bt
= basic_type_data
.get (objfile
);
1378 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1379 btMax
, struct type
*);
1380 basic_type_data
.set (objfile
, map_bt
);
1389 tp
= objfile_type (objfile
)->builtin_void
;
1393 tp
= init_pointer_type (objfile
, 32, "adr_32",
1394 objfile_type (objfile
)->builtin_void
);
1398 tp
= init_integer_type (objfile
, 8, 0, "char");
1399 TYPE_NOSIGN (tp
) = 1;
1403 tp
= init_integer_type (objfile
, 8, 1, "unsigned char");
1407 tp
= init_integer_type (objfile
, 16, 0, "short");
1411 tp
= init_integer_type (objfile
, 16, 1, "unsigned short");
1415 tp
= init_integer_type (objfile
, 32, 0, "int");
1419 tp
= init_integer_type (objfile
, 32, 1, "unsigned int");
1423 tp
= init_integer_type (objfile
, 32, 0, "long");
1427 tp
= init_integer_type (objfile
, 32, 1, "unsigned long");
1431 tp
= init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
1432 "float", gdbarch_float_format (gdbarch
));
1436 tp
= init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
1437 "double", gdbarch_double_format (gdbarch
));
1441 tp
= init_complex_type (objfile
, "complex",
1442 basic_type (btFloat
, objfile
));
1446 tp
= init_complex_type (objfile
, "double complex",
1447 basic_type (btFloat
, objfile
));
1451 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1452 good? Would we be better off with TYPE_CODE_ERROR? Should
1453 TYPE_CODE_ERROR print things in hex if it knows the size? */
1454 tp
= init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
1459 tp
= init_type (objfile
, TYPE_CODE_ERROR
,
1460 gdbarch_double_bit (gdbarch
), "floating decimal");
1464 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1466 tp
= init_type (objfile
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
1470 tp
= objfile_type (objfile
)->builtin_void
;
1474 tp
= init_integer_type (objfile
, 64, 0, "long");
1478 tp
= init_integer_type (objfile
, 64, 1, "unsigned long");
1482 tp
= init_integer_type (objfile
, 64, 0, "long long");
1486 tp
= init_integer_type (objfile
, 64, 1, "unsigned long long");
1490 tp
= init_pointer_type (objfile
, 64, "adr_64",
1491 objfile_type (objfile
)->builtin_void
);
1495 tp
= init_integer_type (objfile
, 64, 0, "int");
1499 tp
= init_integer_type (objfile
, 64, 1, "unsigned int");
1511 /* Parse the type information provided in the raw AX entries for
1512 the symbol SH. Return the bitfield size in BS, in case.
1513 We must byte-swap the AX entries before we use them; BIGEND says whether
1514 they are big-endian or little-endian (from fh->fBigendian). */
1516 static struct type
*
1517 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1518 int bigend
, const char *sym_name
)
1521 struct type
*tp
= 0;
1522 enum type_code type_code
= TYPE_CODE_UNDEF
;
1524 /* Handle undefined types, they have indexNil. */
1525 if (aux_index
== indexNil
)
1526 return basic_type (btInt
, mdebugread_objfile
);
1528 /* Handle corrupt aux indices. */
1529 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1531 index_complaint (sym_name
);
1532 return basic_type (btInt
, mdebugread_objfile
);
1536 /* Use aux as a type information record, map its basic type. */
1537 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1538 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1541 /* Cannot use builtin types -- build our own. */
1545 type_code
= TYPE_CODE_STRUCT
;
1548 type_code
= TYPE_CODE_UNION
;
1551 type_code
= TYPE_CODE_ENUM
;
1554 type_code
= TYPE_CODE_RANGE
;
1557 type_code
= TYPE_CODE_SET
;
1560 /* alpha cc -migrate uses this for typedefs. The true type will
1561 be obtained by crossreferencing below. */
1562 type_code
= TYPE_CODE_ERROR
;
1565 /* alpha cc uses this for typedefs. The true type will be
1566 obtained by crossreferencing below. */
1567 type_code
= TYPE_CODE_ERROR
;
1570 basic_type_complaint (t
->bt
, sym_name
);
1571 return basic_type (btInt
, mdebugread_objfile
);
1575 /* Move on to next aux. */
1580 int width
= AUX_GET_WIDTH (bigend
, ax
);
1582 /* Inhibit core dumps if TIR is corrupted. */
1585 /* Alpha cc -migrate encodes char and unsigned char types
1586 as short and unsigned short types with a field width of 8.
1587 Enum types also have a field width which we ignore for now. */
1588 if (t
->bt
== btShort
&& width
== 8)
1589 tp
= basic_type (btChar
, mdebugread_objfile
);
1590 else if (t
->bt
== btUShort
&& width
== 8)
1591 tp
= basic_type (btUChar
, mdebugread_objfile
);
1592 else if (t
->bt
== btEnum
)
1595 complaint (_("can't handle TIR fBitfield for %s"),
1603 /* A btIndirect entry cross references to an aux entry containing
1605 if (t
->bt
== btIndirect
)
1612 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1614 if (rn
->rfd
== 0xfff)
1616 rf
= AUX_GET_ISYM (bigend
, ax
);
1624 complaint (_("unable to cross ref btIndirect for %s"), sym_name
);
1625 return basic_type (btInt
, mdebugread_objfile
);
1627 xref_fh
= get_rfd (fd
, rf
);
1628 xref_fd
= xref_fh
- debug_info
->fdr
;
1629 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1630 rn
->index
, NULL
, xref_fh
->fBigendian
, sym_name
);
1633 /* All these types really point to some (common) MIPS type
1634 definition, and only the type-qualifiers fully identify
1635 them. We'll make the same effort at sharing. */
1636 if (t
->bt
== btStruct
||
1640 /* btSet (I think) implies that the name is a tag name, not a typedef
1641 name. This apparently is a MIPS extension for C sets. */
1646 /* Try to cross reference this type, build new type on failure. */
1647 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1649 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1651 /* DEC c89 produces cross references to qualified aggregate types,
1652 dereference them. */
1653 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1654 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1655 tp
= TYPE_TARGET_TYPE (tp
);
1657 /* Make sure that TYPE_CODE(tp) has an expected type code.
1658 Any type may be returned from cross_ref if file indirect entries
1660 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1661 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1662 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1664 unexpected_type_code_complaint (sym_name
);
1668 /* Usually, TYPE_CODE(tp) is already type_code. The main
1669 exception is if we guessed wrong re struct/union/enum.
1670 But for struct vs. union a wrong guess is harmless, so
1671 don't complain(). */
1672 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1673 && type_code
!= TYPE_CODE_ENUM
)
1674 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1675 && type_code
== TYPE_CODE_ENUM
))
1677 bad_tag_guess_complaint (sym_name
);
1680 if (TYPE_CODE (tp
) != type_code
)
1682 TYPE_CODE (tp
) = type_code
;
1685 /* Do not set the tag name if it is a compiler generated tag name
1686 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1687 if (name
[0] == '.' || name
[0] == '\0')
1688 TYPE_NAME (tp
) = NULL
;
1689 else if (TYPE_NAME (tp
) == NULL
1690 || strcmp (TYPE_NAME (tp
), name
) != 0)
1692 = obstack_strdup (&mdebugread_objfile
->objfile_obstack
, name
);
1696 /* All these types really point to some (common) MIPS type
1697 definition, and only the type-qualifiers fully identify
1698 them. We'll make the same effort at sharing.
1699 FIXME: We are not doing any guessing on range types. */
1700 if (t
->bt
== btRange
)
1704 /* Try to cross reference this type, build new type on failure. */
1705 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1707 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1709 /* Make sure that TYPE_CODE(tp) has an expected type code.
1710 Any type may be returned from cross_ref if file indirect entries
1712 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1714 unexpected_type_code_complaint (sym_name
);
1718 /* Usually, TYPE_CODE(tp) is already type_code. The main
1719 exception is if we guessed wrong re struct/union/enum. */
1720 if (TYPE_CODE (tp
) != type_code
)
1722 bad_tag_guess_complaint (sym_name
);
1723 TYPE_CODE (tp
) = type_code
;
1725 if (TYPE_NAME (tp
) == NULL
1726 || strcmp (TYPE_NAME (tp
), name
) != 0)
1728 = obstack_strdup (&mdebugread_objfile
->objfile_obstack
, name
);
1731 if (t
->bt
== btTypedef
)
1735 /* Try to cross reference this type, it should succeed. */
1736 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1739 complaint (_("unable to cross ref btTypedef for %s"), sym_name
);
1740 tp
= basic_type (btInt
, mdebugread_objfile
);
1744 /* Deal with range types. */
1745 if (t
->bt
== btRange
)
1747 TYPE_NFIELDS (tp
) = 0;
1748 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1749 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1750 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1752 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1756 /* Parse all the type qualifiers now. If there are more
1757 than 6 the game will continue in the next aux. */
1761 #define PARSE_TQ(tq) \
1762 if (t->tq != tqNil) \
1763 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1775 /* mips cc 2.x and gcc never put out continued aux entries. */
1779 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1783 /* Complain for illegal continuations due to corrupt aux entries. */
1785 complaint (_("illegal TIR continued for %s"), sym_name
);
1790 /* Make up a complex type from a basic one. Type is passed by
1791 reference in TPP and side-effected as necessary. The type
1792 qualifier TQ says how to handle the aux symbols at AX for
1793 the symbol SX we are currently analyzing. BIGEND says whether
1794 aux symbols are big-endian or little-endian.
1795 Returns the number of aux symbols we parsed. */
1798 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1799 const char *sym_name
)
1804 /* Used in array processing. */
1815 t
= lookup_pointer_type (*tpp
);
1820 t
= lookup_function_type (*tpp
);
1827 /* Determine and record the domain type (type of index). */
1828 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1834 rf
= AUX_GET_ISYM (bigend
, ax
);
1837 fh
= get_rfd (fd
, rf
);
1839 indx
= parse_type (fh
- debug_info
->fdr
,
1840 debug_info
->external_aux
+ fh
->iauxBase
,
1841 id
, NULL
, bigend
, sym_name
);
1843 /* The bounds type should be an integer type, but might be anything
1844 else due to corrupt aux entries. */
1845 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1847 complaint (_("illegal array index type for %s, assuming int"),
1849 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1852 /* Get the bounds, and create the array type. */
1854 lower
= AUX_GET_DNLOW (bigend
, ax
);
1856 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1858 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1860 range
= create_static_range_type (NULL
, indx
, lower
, upper
);
1862 t
= create_array_type (NULL
, *tpp
, range
);
1864 /* We used to fill in the supplied array element bitsize
1865 here if the TYPE_LENGTH of the target type was zero.
1866 This happens for a `pointer to an array of anonymous structs',
1867 but in this case the array element bitsize is also zero,
1868 so nothing is gained.
1869 And we used to check the TYPE_LENGTH of the target type against
1870 the supplied array element bitsize.
1871 gcc causes a mismatch for `pointer to array of object',
1872 since the sdb directives it uses do not have a way of
1873 specifying the bitsize, but it does no harm (the
1874 TYPE_LENGTH should be correct) and we should be able to
1875 ignore the erroneous bitsize from the auxiliary entry safely.
1876 dbx seems to ignore it too. */
1878 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1879 if (TYPE_LENGTH (*tpp
) == 0)
1880 TYPE_TARGET_STUB (t
) = 1;
1886 /* Volatile -- currently ignored */
1890 /* Const -- currently ignored */
1894 complaint (_("unknown type qualifier 0x%x"), tq
);
1900 /* Parse a procedure descriptor record PR. Note that the procedure is
1901 parsed _after_ the local symbols, now we just insert the extra
1902 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1903 already been placed in the procedure's main block. Note also that
1904 images that have been partially stripped (ld -x) have been deprived
1905 of local symbols, and we have to cope with them here. FIRST_OFF is
1906 the offset of the first procedure for this FDR; we adjust the
1907 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1908 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1909 in question, or NULL to use top_stack->cur_block. */
1912 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1913 legacy_psymtab
*pst
)
1915 struct symbol
*s
, *i
;
1916 const struct block
*b
;
1919 /* Simple rule to find files linked "-x". */
1920 if (cur_fdr
->rss
== -1)
1924 /* Static procedure at address pr->adr. Sigh. */
1925 /* FIXME-32x64. assuming pr->adr fits in long. */
1926 complaint (_("can't handle PDR for static proc at 0x%lx"),
1927 (unsigned long) pr
->adr
);
1935 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1936 ((char *) debug_info
->external_ext
1938 * debug_swap
->external_ext_size
)),
1940 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1948 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1949 ((char *) debug_info
->external_sym
1950 + ((cur_fdr
->isymBase
+ pr
->isym
)
1951 * debug_swap
->external_sym_size
)),
1953 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1956 if (search_symtab
!= NULL
)
1959 /* This loses both in the case mentioned (want a static, find a global),
1960 but also if we are looking up a non-mangled name which happens to
1961 match the name of a mangled function. */
1962 /* We have to save the cur_fdr across the call to lookup_symbol.
1963 If the pdr is for a static function and if a global function with
1964 the same name exists, lookup_symbol will eventually read in the symtab
1965 for the global function and clobber cur_fdr. */
1966 FDR
*save_cur_fdr
= cur_fdr
;
1968 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1969 cur_fdr
= save_cur_fdr
;
1973 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
1980 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1981 VAR_DOMAIN
, LOC_BLOCK
);
1985 b
= SYMBOL_BLOCK_VALUE (s
);
1989 complaint (_("PDR for %s, but no symbol"), sh_name
);
1993 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1994 s
= new_symbol (sh_name
);
1995 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1996 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1997 /* Don't know its type, hope int is ok. */
1999 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2000 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2001 /* Won't have symbols for this one. */
2003 SYMBOL_BLOCK_VALUE (s
) = b
;
2004 BLOCK_FUNCTION (b
) = s
;
2005 BLOCK_START (b
) = pr
->adr
;
2006 /* BOUND used to be the end of procedure's text, but the
2007 argument is no longer passed in. */
2008 BLOCK_END (b
) = bound
;
2009 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2010 add_block (b
, top_stack
->cur_st
);
2014 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2018 struct mdebug_extra_func_info
*e
;
2020 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2023 /* GDB expects the absolute function start address for the
2024 procedure descriptor in e->pdr.adr.
2025 As the address in the procedure descriptor is usually relative,
2026 we would have to relocate e->pdr.adr with cur_fdr->adr.
2027 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2028 in shared libraries on some systems, and on other systems
2029 e->pdr.adr is sometimes offset by a bogus value.
2030 To work around these problems, we replace e->pdr.adr with
2031 the start address of the function. */
2032 e
->pdr
.adr
= BLOCK_START (b
);
2035 /* It would be reasonable that functions that have been compiled
2036 without debugging info have a btNil type for their return value,
2037 and functions that are void and are compiled with debugging info
2039 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2040 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2042 The glevel field in cur_fdr could be used to determine the presence
2043 of debugging info, but GCC doesn't always pass the -g switch settings
2044 to the assembler and GAS doesn't set the glevel field from the -g switch
2046 To work around these problems, the return value type of a TYPE_CODE_VOID
2047 function is adjusted accordingly if no debugging info was found in the
2048 compilation unit. */
2050 if (processing_gcc_compilation
== 0
2051 && found_ecoff_debugging_info
== 0
2052 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2053 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2056 /* Parse the external symbol ES. Just call parse_symbol() after
2057 making sure we know where the aux are for it.
2058 BIGEND says whether aux entries are big-endian or little-endian.
2060 This routine clobbers top_stack->cur_block and ->cur_st. */
2063 parse_external (EXTR
*es
, int bigend
, const section_offsets
§ion_offsets
,
2064 struct objfile
*objfile
)
2068 if (es
->ifd
!= ifdNil
)
2071 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2072 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2076 cur_fdr
= debug_info
->fdr
;
2080 /* Reading .o files */
2081 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2084 switch (es
->asym
.st
)
2087 /* These are generated for static symbols in .o files,
2108 /* FIXME: Turn this into a complaint? */
2110 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2111 what
, debug_info
->ssext
+ es
->asym
.iss
,
2112 fdr_name (cur_fdr
));
2116 switch (es
->asym
.st
)
2120 /* There is no need to parse the external procedure symbols.
2121 If they are from objects compiled without -g, their index will
2122 be indexNil, and the symbol definition from the minimal symbol
2123 is preferrable (yielding a function returning int instead of int).
2124 If the index points to a local procedure symbol, the local
2125 symbol already provides the correct type.
2126 Note that the index of the external procedure symbol points
2127 to the local procedure symbol in the local symbol table, and
2128 _not_ to the auxiliary symbol info. */
2132 /* Global common symbols are resolved by the runtime loader,
2134 if (SC_IS_COMMON (es
->asym
.sc
))
2137 /* Note that the case of a symbol with indexNil must be handled
2138 anyways by parse_symbol(). */
2139 parse_symbol (&es
->asym
, ax
, NULL
,
2140 bigend
, section_offsets
, objfile
);
2147 /* Parse the line number info for file descriptor FH into
2148 GDB's linetable LT. MIPS' encoding requires a little bit
2149 of magic to get things out. Note also that MIPS' line
2150 numbers can go back and forth, apparently we can live
2151 with that and do not need to reorder our linetables. */
2154 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2155 CORE_ADDR textlow
, CORE_ADDR lowest_pdr_addr
)
2157 unsigned char *base
;
2159 int delta
, count
, lineno
= 0;
2161 if (fh
->cbLine
== 0)
2164 /* Scan by procedure descriptors. */
2166 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2170 unsigned char *halt
;
2172 /* No code for this one. */
2173 if (pr
->iline
== ilineNil
||
2174 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2177 /* Determine start and end address of compressed line bytes for
2179 base
= debug_info
->line
+ fh
->cbLineOffset
;
2180 if (j
!= (fh
->cpd
- 1))
2181 halt
= base
+ pr
[1].cbLineOffset
;
2183 halt
= base
+ fh
->cbLine
;
2184 base
+= pr
->cbLineOffset
;
2186 adr
= textlow
+ pr
->adr
- lowest_pdr_addr
;
2188 l
= adr
>> 2; /* in words */
2189 for (lineno
= pr
->lnLow
; base
< halt
;)
2191 count
= *base
& 0x0f;
2192 delta
= *base
++ >> 4;
2197 delta
= (base
[0] << 8) | base
[1];
2198 if (delta
>= 0x8000)
2202 lineno
+= delta
; /* first delta is 0 */
2204 /* Complain if the line table overflows. Could happen
2205 with corrupt binaries. */
2206 if (lt
->nitems
>= maxlines
)
2208 complaint (_("guessed size of linetable for %s incorrectly"),
2212 k
= add_line (lt
, lineno
, l
, k
);
2219 function_outside_compilation_unit_complaint (const char *arg1
)
2221 complaint (_("function `%s' appears to be defined "
2222 "outside of all compilation units"),
2226 /* Use the STORAGE_CLASS to compute which section the given symbol
2227 belongs to, and then records this new minimal symbol. */
2230 record_minimal_symbol (minimal_symbol_reader
&reader
,
2231 const char *name
, const CORE_ADDR address
,
2232 enum minimal_symbol_type ms_type
, int storage_class
,
2233 struct objfile
*objfile
)
2237 switch (storage_class
)
2240 section
= SECT_OFF_TEXT (objfile
);
2243 section
= SECT_OFF_DATA (objfile
);
2246 section
= SECT_OFF_BSS (objfile
);
2249 section
= get_section_index (objfile
, ".sdata");
2252 section
= get_section_index (objfile
, ".sbss");
2255 section
= get_section_index (objfile
, ".rdata");
2258 section
= get_section_index (objfile
, ".init");
2261 section
= get_section_index (objfile
, ".xdata");
2264 section
= get_section_index (objfile
, ".pdata");
2267 section
= get_section_index (objfile
, ".fini");
2270 section
= get_section_index (objfile
, ".rconst");
2274 section
= get_section_index (objfile
, ".tlsdata");
2279 section
= get_section_index (objfile
, ".tlsbss");
2283 /* This kind of symbol is not associated to a section. */
2287 reader
.record_with_info (name
, address
, ms_type
, section
);
2290 /* Master parsing procedure for first-pass reading of file symbols
2291 into a partial_symtab. */
2294 parse_partial_symbols (minimal_symbol_reader
&reader
,
2295 struct objfile
*objfile
)
2297 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2298 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2299 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2300 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2301 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2302 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2303 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2305 HDRR
*hdr
= &debug_info
->symbolic_header
;
2306 /* Running pointers */
2313 legacy_psymtab
*pst
;
2314 int textlow_not_set
= 1;
2316 /* List of current psymtab's include files. */
2317 const char **psymtab_include_list
;
2318 int includes_allocated
;
2321 struct pst_map
*fdr_to_pst
;
2322 /* Index within current psymtab dependency list. */
2323 legacy_psymtab
**dependency_list
;
2324 int dependencies_used
, dependencies_allocated
;
2326 enum language prev_language
;
2327 asection
*text_sect
;
2328 int relocatable
= 0;
2330 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2331 the shared libraries are prelinked at a high memory address.
2332 We have to adjust the start address of the object file for this case,
2333 by setting it to the start address of the first procedure in the file.
2334 But we should do no adjustments if we are debugging a .o file, where
2335 the text section (and fh->adr) really starts at zero. */
2336 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2337 if (text_sect
!= NULL
2338 && (bfd_section_flags (text_sect
) & SEC_RELOC
))
2341 extern_tab
= XOBNEWVEC (&objfile
->objfile_obstack
, EXTR
, hdr
->iextMax
);
2343 includes_allocated
= 30;
2345 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2346 sizeof (const char *));
2347 next_symbol_text_func
= mdebug_next_symbol_text
;
2349 dependencies_allocated
= 30;
2350 dependencies_used
= 0;
2352 (legacy_psymtab
**) alloca (dependencies_allocated
*
2353 sizeof (legacy_psymtab
*));
2355 set_last_source_file (NULL
);
2360 * Only parse the Local and External symbols, and the Relative FDR.
2361 * Fixup enough of the loader symtab to be able to use it.
2362 * Allocate space only for the file's portions we need to
2367 max_glevel
= MIN_GLEVEL
;
2369 /* Allocate the map FDR -> PST.
2370 Minor hack: -O3 images might claim some global data belongs
2371 to FDR -1. We`ll go along with that. */
2372 gdb::def_vector
<struct pst_map
> fdr_to_pst_holder (hdr
->ifdMax
+ 1);
2373 fdr_to_pst
= fdr_to_pst_holder
.data ();
2376 legacy_psymtab
*new_pst
= new_psymtab ("", objfile
);
2378 fdr_to_pst
[-1].pst
= new_pst
;
2379 FDR_IDX (new_pst
) = -1;
2382 /* Allocate the global pending list. */
2383 pending_list
= XOBNEWVEC (&objfile
->objfile_obstack
, mdebug_pending
*,
2385 memset (pending_list
, 0,
2386 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2388 /* Pass 0 over external syms: swap them in. */
2389 gdb::def_vector
<EXTR
> ext_block (hdr
->iextMax
);
2391 ext_out
= (char *) debug_info
->external_ext
;
2392 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2393 ext_in
= ext_block
.data ();
2394 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2395 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2397 /* Pass 1 over external syms: Presize and partition the list. */
2398 ext_in
= ext_block
.data ();
2399 ext_in_end
= ext_in
+ hdr
->iextMax
;
2400 for (; ext_in
< ext_in_end
; ext_in
++)
2402 /* See calls to complain below. */
2403 if (ext_in
->ifd
>= -1
2404 && ext_in
->ifd
< hdr
->ifdMax
2405 && ext_in
->asym
.iss
>= 0
2406 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2407 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2410 /* Pass 1.5 over files: partition out global symbol space. */
2412 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2414 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2415 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2416 fdr_to_pst
[f_idx
].n_globals
= 0;
2421 For ECOFF in ELF, we skip the creation of the minimal symbols.
2422 The ECOFF symbols should be a subset of the Elf symbols, and the
2423 section information of the elf symbols will be more accurate.
2424 FIXME! What about Irix 5's native linker?
2426 By default, Elf sections which don't exist in ECOFF
2427 get put in ECOFF's absolute section by the gnu linker.
2428 Since absolute sections don't get relocated, we
2429 end up calculating an address different from that of
2430 the symbol's minimal symbol (created earlier from the
2433 To fix this, either :
2434 1) don't create the duplicate symbol
2435 (assumes ECOFF symtab is a subset of the ELF symtab;
2436 assumes no side-effects result from ignoring ECOFF symbol)
2437 2) create it, only if lookup for existing symbol in ELF's minimal
2440 assumes no side-effects result from ignoring ECOFF symbol)
2441 3) create it, but lookup ELF's minimal symbol and use it's section
2442 during relocation, then modify "uniquify" phase to merge and
2443 eliminate the duplicate symbol
2444 (highly inefficient)
2446 I've implemented #1 here...
2447 Skip the creation of the minimal symbols based on the ECOFF
2450 /* Pass 2 over external syms: fill in external symbols. */
2451 ext_in
= ext_block
.data ();
2452 ext_in_end
= ext_in
+ hdr
->iextMax
;
2453 for (; ext_in
< ext_in_end
; ext_in
++)
2455 enum minimal_symbol_type ms_type
= mst_text
;
2456 CORE_ADDR svalue
= ext_in
->asym
.value
;
2458 /* The Irix 5 native tools seem to sometimes generate bogus
2459 external symbols. */
2460 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2462 complaint (_("bad ifd for external symbol: %d (max %ld)"),
2463 ext_in
->ifd
, hdr
->ifdMax
);
2466 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2468 complaint (_("bad iss for external symbol: %ld (max %ld)"),
2469 ext_in
->asym
.iss
, hdr
->issExtMax
);
2473 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2474 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2477 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2481 /* Pass 3 over files, over local syms: fill in static symbols. */
2482 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2484 /* Process ECOFF Symbol Types and Storage Classes. */
2485 switch (ext_in
->asym
.st
)
2488 /* Beginnning of Procedure */
2491 /* Load time only static procs */
2492 ms_type
= mst_file_text
;
2495 /* External symbol */
2496 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2498 /* The value of a common symbol is its size, not its address.
2502 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2506 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2510 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2520 /* On certain platforms, some extra label symbols can be
2521 generated by the linker. One possible usage for this kind
2522 of symbols is to represent the address of the begining of a
2523 given section. For instance, on Tru64 5.1, the address of
2524 the _ftext label is the start address of the .text section.
2526 The storage class of these symbols is usually directly
2527 related to the section to which the symbol refers. For
2528 instance, on Tru64 5.1, the storage class for the _fdata
2529 label is scData, refering to the .data section.
2531 It is actually possible that the section associated to the
2532 storage class of the label does not exist. On True64 5.1
2533 for instance, the libm.so shared library does not contain
2534 any .data section, although it contains a _fpdata label
2535 which storage class is scData... Since these symbols are
2536 usually useless for the debugger user anyway, we just
2537 discard these symbols. */
2539 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2541 if (objfile
->sect_index_text
== -1)
2544 ms_type
= mst_file_text
;
2546 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2548 if (objfile
->sect_index_data
== -1)
2551 ms_type
= mst_file_data
;
2553 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2555 if (objfile
->sect_index_bss
== -1)
2558 ms_type
= mst_file_bss
;
2560 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2562 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2564 if (sbss_sect_index
== -1)
2567 ms_type
= mst_file_bss
;
2574 /* The alpha has the section start addresses in stLocal symbols
2575 whose name starts with a `.'. Skip those but complain for all
2576 other stLocal symbols.
2577 Irix6 puts the section start addresses in stNil symbols, skip
2583 ms_type
= mst_unknown
;
2584 unknown_ext_complaint (name
);
2586 if (!ECOFF_IN_ELF (cur_bfd
))
2587 record_minimal_symbol (reader
, name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2591 /* Pass 3 over files, over local syms: fill in static symbols. */
2592 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2594 legacy_psymtab
*save_pst
;
2598 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2602 fdr_to_pst
[f_idx
].pst
= NULL
;
2606 /* Determine the start address for this object file from the
2607 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2612 pst
= new legacy_psymtab (fdr_name (fh
), objfile
, textlow
);
2613 pst
->read_symtab_private
= XOBNEW (&objfile
->objfile_obstack
, symloc
);
2614 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2617 FDR_IDX (pst
) = f_idx
;
2618 CUR_BFD (pst
) = cur_bfd
;
2619 DEBUG_SWAP (pst
) = debug_swap
;
2620 DEBUG_INFO (pst
) = debug_info
;
2621 PENDING_LIST (pst
) = pending_list
;
2623 /* The way to turn this into a symtab is to call... */
2624 pst
->legacy_read_symtab
= mdebug_read_symtab
;
2626 /* Set up language for the pst.
2627 The language from the FDR is used if it is unambigious (e.g. cfront
2628 with native cc and g++ will set the language to C).
2629 Otherwise we have to deduce the language from the filename.
2630 Native ecoff has every header file in a separate FDR, so
2631 deduce_language_from_filename will return language_unknown for
2632 a header file, which is not what we want.
2633 But the FDRs for the header files are after the FDR for the source
2634 file, so we can assign the language of the source file to the
2635 following header files. Then we save the language in the private
2636 pst data so that we can reuse it when building symtabs. */
2637 prev_language
= psymtab_language
;
2641 case langCplusplusV2
:
2642 psymtab_language
= language_cplus
;
2645 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2648 if (psymtab_language
== language_unknown
)
2649 psymtab_language
= prev_language
;
2650 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2652 pst
->set_text_high (pst
->raw_text_low ());
2654 /* For stabs-in-ecoff files, the second symbol must be @stab.
2655 This symbol is emitted by mips-tfile to signal that the
2656 current object file uses encapsulated stabs instead of mips
2657 ecoff for local symbols. (It is the second symbol because
2658 the first symbol is the stFile used to signal the start of a
2660 processing_gcc_compilation
= 0;
2663 (*swap_sym_in
) (cur_bfd
,
2664 ((char *) debug_info
->external_sym
2665 + (fh
->isymBase
+ 1) * external_sym_size
),
2667 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2669 processing_gcc_compilation
= 2;
2672 if (processing_gcc_compilation
!= 0)
2674 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2677 const char *namestring
;
2679 (*swap_sym_in
) (cur_bfd
,
2680 (((char *) debug_info
->external_sym
)
2681 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2683 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2684 if (!ECOFF_IS_STAB (&sh
))
2686 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2691 if (sh
.st
== stStaticProc
)
2693 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2694 record_minimal_symbol (reader
, namestring
, sh
.value
,
2695 mst_file_text
, sh
.sc
,
2698 procaddr
= sh
.value
;
2700 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2701 (debug_info
->external_aux
2704 (*swap_sym_in
) (cur_bfd
,
2705 ((char *) debug_info
->external_sym
2706 + ((fh
->isymBase
+ isym
- 1)
2707 * external_sym_size
)),
2711 CORE_ADDR high
= procaddr
+ sh
.value
;
2713 /* Kludge for Irix 5.2 zero fh->adr. */
2715 && (!pst
->text_low_valid
2716 || procaddr
< pst
->raw_text_low ()))
2717 pst
->set_text_low (procaddr
);
2718 if (high
> pst
->raw_text_high ())
2719 pst
->set_text_high (high
);
2722 else if (sh
.st
== stStatic
)
2737 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2738 record_minimal_symbol (reader
, namestring
, sh
.value
,
2739 mst_file_data
, sh
.sc
,
2744 /* FIXME! Shouldn't this use cases for bss,
2745 then have the default be abs? */
2746 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2747 record_minimal_symbol (reader
, namestring
, sh
.value
,
2748 mst_file_bss
, sh
.sc
,
2755 /* Handle stabs continuation. */
2757 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2758 /* If we need to heap-allocate STABSTRING, this owns
2760 gdb::unique_xmalloc_ptr
<char> stabstring_storage
;
2761 int len
= strlen (stabstring
);
2763 while (stabstring
[len
- 1] == '\\')
2766 char *stabstring1
= stabstring
;
2770 /* Ignore continuation char from 1st string. */
2773 /* Read next stabstring. */
2775 (*swap_sym_in
) (cur_bfd
,
2776 (((char *) debug_info
->external_sym
)
2777 + (fh
->isymBase
+ cur_sdx
)
2778 * external_sym_size
),
2780 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2781 len2
= strlen (stabstring2
);
2783 /* Concatenate stabstring2 with stabstring1. */
2784 if (stabstring_storage
!= nullptr)
2786 stabstring_storage
.reset
2787 ((char *) xrealloc (stabstring_storage
.release (),
2789 stabstring
= stabstring_storage
.get ();
2793 stabstring_storage
.reset
2794 ((char *) xmalloc (len
+ len2
+ 1));
2795 stabstring
= stabstring_storage
.get ();
2796 strcpy (stabstring
, stabstring1
);
2798 strcpy (stabstring
+ len
, stabstring2
);
2806 /* Standard, external, non-debugger, symbols. */
2808 case N_TEXT
| N_EXT
:
2809 case N_NBTEXT
| N_EXT
:
2812 case N_DATA
| N_EXT
:
2813 case N_NBDATA
| N_EXT
:
2818 case N_NBBSS
| N_EXT
:
2819 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2826 /* Standard, local, non-debugger, symbols. */
2830 /* We need to be able to deal with both N_FN or
2831 N_TEXT, because we have no way of knowing
2832 whether the sys-supplied ld or GNU ld was used
2833 to make the executable. Sequents throw in
2834 another wrinkle -- they renumbered N_FN. */
2844 case N_UNDF
| N_EXT
:
2845 continue; /* Just undefined, not COMMON. */
2850 /* Lots of symbol types we can just ignore. */
2857 /* Keep going . . . */
2860 * Special symbol types for GNU
2863 case N_INDR
| N_EXT
:
2865 case N_SETA
| N_EXT
:
2867 case N_SETT
| N_EXT
:
2869 case N_SETD
| N_EXT
:
2871 case N_SETB
| N_EXT
:
2881 static int prev_so_symnum
= -10;
2882 const char *basename
;
2884 /* A zero value is probably an indication for the
2885 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2886 for zero, so don't relocate it. */
2889 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2890 textlow_not_set
= 1;
2892 textlow_not_set
= 0;
2894 if (prev_so_symnum
!= symnum
- 1)
2895 { /* Here if prev stab wasn't N_SO. */
2898 pst
= (legacy_psymtab
*) 0;
2900 dependencies_used
= 0;
2904 prev_so_symnum
= symnum
;
2906 /* End the current partial symtab and start a
2909 /* SET_NAMESTRING ();*/
2910 namestring
= stabstring
;
2912 /* Null name means end of .o file. Don't start a new
2914 if (*namestring
== '\000')
2917 /* Some compilers (including gcc) emit a pair of
2918 initial N_SOs. The first one is a directory name;
2919 the second the file name. If pst exists, is
2920 empty, and has a filename ending in '/', we assume
2921 the previous N_SO was a directory name. */
2922 basename
= lbasename (namestring
);
2923 if (basename
!= namestring
&& *basename
== '\000')
2924 continue; /* Simply ignore directory
2927 /* Some other compilers (C++ ones in particular) emit
2928 useless SOs for non-existant .c files. We ignore
2929 all subsequent SOs that immediately follow the
2942 enum language tmp_language
;
2944 /* Mark down an include file in the current psymtab. */
2946 /* SET_NAMESTRING (); */
2947 namestring
= stabstring
;
2950 = deduce_language_from_filename (namestring
);
2952 /* Only change the psymtab's language if we've
2953 learned something useful (eg. tmp_language is not
2954 language_unknown). In addition, to match what
2955 start_subfile does, never change from C++ to
2957 if (tmp_language
!= language_unknown
2958 && (tmp_language
!= language_c
2959 || psymtab_language
!= language_cplus
))
2960 psymtab_language
= tmp_language
;
2962 /* In C++, one may expect the same filename to come
2963 round many times, when code is coming alternately
2964 from the main file and from inline functions in
2965 other files. So I check to see if this is a file
2966 we've seen before -- either the main source file,
2967 or a previously included file.
2969 This seems to be a lot of time to be spending on
2970 N_SOL, but things like "break c-exp.y:435" need to
2971 work (I suppose the psymtab_include_list could be
2972 hashed or put in a binary tree, if profiling shows
2973 this is a major hog). */
2974 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
2980 for (i
= 0; i
< includes_used
; i
++)
2981 if (filename_cmp (namestring
,
2982 psymtab_include_list
[i
]) == 0)
2991 psymtab_include_list
[includes_used
++] = namestring
;
2992 if (includes_used
>= includes_allocated
)
2994 const char **orig
= psymtab_include_list
;
2996 psymtab_include_list
= (const char **)
2997 alloca ((includes_allocated
*= 2) *
2998 sizeof (const char *));
2999 memcpy (psymtab_include_list
, orig
,
3000 includes_used
* sizeof (const char *));
3004 case N_LSYM
: /* Typedef or automatic variable. */
3005 case N_STSYM
: /* Data seg var -- static */
3006 case N_LCSYM
: /* BSS " */
3007 case N_ROSYM
: /* Read-only data seg var -- static. */
3008 case N_NBSTS
: /* Gould nobase. */
3009 case N_NBLCS
: /* symbols. */
3011 case N_GSYM
: /* Global (extern) variable; can be
3012 data or bss (sigh FIXME). */
3014 /* Following may probably be ignored; I'll leave them here
3015 for now (until I do Pascal and Modula 2 extensions). */
3017 case N_PC
: /* I may or may not need this; I
3019 case N_M2C
: /* I suspect that I can ignore this
3021 case N_SCOPE
: /* Same. */
3023 /* SET_NAMESTRING (); */
3024 namestring
= stabstring
;
3025 p
= (char *) strchr (namestring
, ':');
3027 continue; /* Not a debugging symbol. */
3031 /* Main processing section for debugging symbols which
3032 the initial read through the symbol tables needs to
3033 worry about. If we reach this point, the symbol
3034 which we are considering is definitely one we are
3035 interested in. p must also contain the (valid)
3036 index into the namestring which indicates the
3037 debugging type symbol. */
3042 if (gdbarch_static_transform_name_p (gdbarch
))
3043 namestring
= gdbarch_static_transform_name
3044 (gdbarch
, namestring
);
3046 add_psymbol_to_list (gdb::string_view (namestring
,
3048 true, VAR_DOMAIN
, LOC_STATIC
,
3049 SECT_OFF_DATA (objfile
),
3050 psymbol_placement::STATIC
,
3052 psymtab_language
, objfile
);
3055 /* The addresses in these entries are reported
3056 to be wrong. See the code that reads 'G's
3058 add_psymbol_to_list (gdb::string_view (namestring
,
3060 true, VAR_DOMAIN
, LOC_STATIC
,
3061 SECT_OFF_DATA (objfile
),
3062 psymbol_placement::GLOBAL
,
3064 psymtab_language
, objfile
);
3068 /* When a 'T' entry is defining an anonymous enum, it
3069 may have a name which is the empty string, or a
3070 single space. Since they're not really defining a
3071 symbol, those shouldn't go in the partial symbol
3072 table. We do pick up the elements of such enums at
3073 'check_enum:', below. */
3074 if (p
>= namestring
+ 2
3075 || (p
== namestring
+ 1
3076 && namestring
[0] != ' '))
3079 (gdb::string_view (namestring
, p
- namestring
),
3080 true, STRUCT_DOMAIN
, LOC_TYPEDEF
, -1,
3081 psymbol_placement::STATIC
, 0, psymtab_language
,
3085 /* Also a typedef with the same name. */
3087 (gdb::string_view (namestring
,
3089 true, VAR_DOMAIN
, LOC_TYPEDEF
, -1,
3090 psymbol_placement::STATIC
, 0,
3091 psymtab_language
, objfile
);
3097 if (p
!= namestring
) /* a name is there, not
3101 (gdb::string_view (namestring
,
3103 true, VAR_DOMAIN
, LOC_TYPEDEF
, -1,
3104 psymbol_placement::STATIC
, 0, psymtab_language
,
3108 /* If this is an enumerated type, we need to add
3109 all the enum constants to the partial symbol
3110 table. This does not cover enums without names,
3111 e.g. "enum {a, b} c;" in C, but fortunately
3112 those are rare. There is no way for GDB to find
3113 those from the enum type without spending too
3114 much time on it. Thus to solve this problem,
3115 the compiler needs to put out the enum in a
3116 nameless type. GCC2 does this. */
3118 /* We are looking for something of the form
3119 <name> ":" ("t" | "T") [<number> "="] "e"
3120 {<constant> ":" <value> ","} ";". */
3122 /* Skip over the colon and the 't' or 'T'. */
3124 /* This type may be given a number. Also, numbers
3125 can come in pairs like (0,26). Skip over it. */
3126 while ((*p
>= '0' && *p
<= '9')
3127 || *p
== '(' || *p
== ',' || *p
== ')'
3133 /* The aix4 compiler emits extra crud before
3137 /* Skip over the type (?). */
3141 /* Skip over the colon. */
3145 /* We have found an enumerated type. */
3146 /* According to comments in read_enum_type
3147 a comma could end it instead of a semicolon.
3148 I don't know where that happens.
3150 while (*p
&& *p
!= ';' && *p
!= ',')
3154 /* Check for and handle cretinous dbx
3155 symbol name continuation! */
3156 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3157 p
= next_symbol_text (objfile
);
3159 /* Point to the character after the name
3160 of the enum constant. */
3161 for (q
= p
; *q
&& *q
!= ':'; q
++)
3163 /* Note that the value doesn't matter for
3164 enum constants in psymtabs, just in
3166 add_psymbol_to_list (gdb::string_view (p
,
3170 psymbol_placement::STATIC
,
3171 0, psymtab_language
,
3173 /* Point past the name. */
3175 /* Skip over the value. */
3176 while (*p
&& *p
!= ',')
3178 /* Advance past the comma. */
3185 /* Constant, e.g. from "const" in Pascal. */
3186 add_psymbol_to_list (gdb::string_view (namestring
,
3188 true, VAR_DOMAIN
, LOC_CONST
, -1,
3189 psymbol_placement::STATIC
,
3190 0, psymtab_language
, objfile
);
3196 std::string
copy (namestring
, p
);
3197 function_outside_compilation_unit_complaint
3200 add_psymbol_to_list (gdb::string_view (namestring
,
3202 true, VAR_DOMAIN
, LOC_BLOCK
,
3203 SECT_OFF_TEXT (objfile
),
3204 psymbol_placement::STATIC
,
3206 psymtab_language
, objfile
);
3209 /* Global functions were ignored here, but now they
3210 are put into the global psymtab like one would
3211 expect. They're also in the minimal symbol
3216 std::string
copy (namestring
, p
);
3217 function_outside_compilation_unit_complaint
3220 add_psymbol_to_list (gdb::string_view (namestring
,
3222 true, VAR_DOMAIN
, LOC_BLOCK
,
3223 SECT_OFF_TEXT (objfile
),
3224 psymbol_placement::GLOBAL
,
3226 psymtab_language
, objfile
);
3229 /* Two things show up here (hopefully); static
3230 symbols of local scope (static used inside
3231 braces) or extensions of structure symbols. We
3246 case '#': /* For symbol identification (used
3251 /* It is a C++ nested symbol. We don't need to
3252 record it (I don't think); if we try to look up
3253 foo::bar::baz, then symbols for the symtab
3254 containing foo should get read in, I think. */
3255 /* Someone says sun cc puts out symbols like
3256 /foo/baz/maclib::/usr/local/bin/maclib,
3257 which would get here with a symbol type of ':'. */
3261 /* Unexpected symbol descriptor. The second and
3262 subsequent stabs of a continued stab can show up
3263 here. The question is whether they ever can
3264 mimic a normal stab--it would be nice if not,
3265 since we certainly don't want to spend the time
3266 searching to the end of every string looking for
3269 complaint (_("unknown symbol descriptor `%c'"), p
[1]);
3271 /* Ignore it; perhaps it is an extension that we don't
3280 /* Solaris 2 end of module, finish current partial
3281 symbol table. dbx_end_psymtab will set the
3282 high text address of PST to the proper value,
3283 which is necessary if a module compiled without
3284 debugging info follows this module. */
3286 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3288 pst
= (legacy_psymtab
*) 0;
3290 dependencies_used
= 0;
3295 if (sh
.value
> save_pst
->raw_text_high ())
3296 save_pst
->set_text_high (sh
.value
);
3301 case N_SSYM
: /* Claim: Structure or union
3302 element. Hopefully, I can
3304 case N_ENTRY
: /* Alternate entry point; can
3306 case N_MAIN
: /* Can definitely ignore this. */
3307 case N_CATCH
: /* These are GNU C++ extensions. */
3308 case N_EHDECL
: /* that can safely be ignored here. */
3318 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3319 case N_DEFD
: /* GNU Modula-2 */
3320 case N_ALIAS
: /* SunPro F77: alias name, ignore
3323 case N_OBJ
: /* Useless types from Solaris. */
3325 /* These symbols aren't interesting; don't worry about
3331 /* If we haven't found it yet, ignore it. It's
3332 probably some new type we don't know about yet. */
3333 complaint (_("unknown symbol type %s"),
3334 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3338 /* end - Handle continuation */
3343 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3346 enum address_class theclass
;
3347 CORE_ADDR minsym_value
;
3350 (*swap_sym_in
) (cur_bfd
,
3351 ((char *) debug_info
->external_sym
3352 + ((fh
->isymBase
+ cur_sdx
)
3353 * external_sym_size
)),
3356 if (ECOFF_IS_STAB (&sh
))
3362 /* Non absolute static symbols go into the minimal table. */
3363 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3364 || (sh
.index
== indexNil
3365 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3367 /* FIXME, premature? */
3372 sym_name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3374 minsym_value
= sh
.value
;
3380 /* The value of a stEnd symbol is the displacement from the
3381 corresponding start symbol value, do not relocate it. */
3383 section
= SECT_OFF_TEXT (objfile
);
3390 section
= SECT_OFF_DATA (objfile
);
3394 section
= SECT_OFF_BSS (objfile
);
3405 reader
.record_with_info (sym_name
, minsym_value
,
3407 SECT_OFF_TEXT (objfile
));
3412 /* Ignore all parameter symbol records. */
3413 if (sh
.index
>= hdr
->iauxMax
)
3415 /* Should not happen, but does when cross-compiling
3416 with the MIPS compiler. FIXME -- pull later. */
3417 index_complaint (sym_name
);
3418 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3421 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3422 (debug_info
->external_aux
3426 if (new_sdx
<= cur_sdx
)
3428 /* This should not happen either... FIXME. */
3429 complaint (_("bad proc end in aux found from symbol %s"),
3431 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3434 /* For stProc symbol records, we need to check the
3435 storage class as well, as only (stProc, scText)
3436 entries represent "real" procedures - See the
3437 Compaq document titled "Object File / Symbol Table
3438 Format Specification" for more information. If the
3439 storage class is not scText, we discard the whole
3440 block of symbol records for this stProc. */
3441 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3444 /* Usually there is a local and a global stProc symbol
3445 for a function. This means that the function name
3446 has already been entered into the minimal symbol table
3447 while processing the global symbols in pass 2 above.
3448 One notable exception is the PROGRAM name from
3449 f77 compiled executables, it is only put out as
3450 local stProc symbol, and a global MAIN__ stProc symbol
3451 points to it. It doesn't matter though, as gdb is
3452 still able to find the PROGRAM name via the partial
3453 symbol table, and the MAIN__ symbol via the minimal
3455 if (sh
.st
== stProc
)
3456 add_psymbol_to_list (sym_name
, true,
3457 VAR_DOMAIN
, LOC_BLOCK
,
3459 psymbol_placement::GLOBAL
,
3460 sh
.value
, psymtab_language
, objfile
);
3462 add_psymbol_to_list (sym_name
, true,
3463 VAR_DOMAIN
, LOC_BLOCK
,
3465 psymbol_placement::STATIC
,
3466 sh
.value
, psymtab_language
, objfile
);
3468 procaddr
= sh
.value
;
3471 (*swap_sym_in
) (cur_bfd
,
3472 ((char *) debug_info
->external_sym
3473 + ((fh
->isymBase
+ cur_sdx
- 1)
3474 * external_sym_size
)),
3479 /* Kludge for Irix 5.2 zero fh->adr. */
3481 && (!pst
->text_low_valid
3482 || procaddr
< pst
->raw_text_low ()))
3483 pst
->set_text_low (procaddr
);
3485 high
= procaddr
+ sh
.value
;
3486 if (high
> pst
->raw_text_high ())
3487 pst
->set_text_high (high
);
3490 case stStatic
: /* Variable */
3491 if (SC_IS_DATA (sh
.sc
))
3492 reader
.record_with_info (sym_name
, minsym_value
,
3494 SECT_OFF_DATA (objfile
));
3496 reader
.record_with_info (sym_name
, minsym_value
,
3498 SECT_OFF_BSS (objfile
));
3499 theclass
= LOC_STATIC
;
3502 case stIndirect
: /* Irix5 forward declaration */
3503 /* Skip forward declarations from Irix5 cc. */
3506 case stTypedef
: /* Typedef */
3507 /* Skip typedefs for forward declarations and opaque
3508 structs from alpha and mips cc. */
3509 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3511 theclass
= LOC_TYPEDEF
;
3514 case stConstant
: /* Constant decl */
3515 theclass
= LOC_CONST
;
3521 case stBlock
: /* { }, str, un, enum */
3522 /* Do not create a partial symbol for cc unnamed aggregates
3523 and gcc empty aggregates. */
3524 if ((sh
.sc
== scInfo
3525 || SC_IS_COMMON (sh
.sc
))
3527 && sh
.index
!= cur_sdx
+ 2)
3529 add_psymbol_to_list (sym_name
, true,
3530 STRUCT_DOMAIN
, LOC_TYPEDEF
, -1,
3531 psymbol_placement::STATIC
,
3532 0, psymtab_language
, objfile
);
3534 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3536 /* Skip over the block. */
3538 if (new_sdx
<= cur_sdx
)
3540 /* This happens with the Ultrix kernel. */
3541 complaint (_("bad aux index at block symbol %s"),
3543 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3548 case stFile
: /* File headers */
3549 case stLabel
: /* Labels */
3550 case stEnd
: /* Ends of files */
3553 case stLocal
: /* Local variables */
3554 /* Normally these are skipped because we skip over
3555 all blocks we see. However, these can occur
3556 as visible symbols in a .h file that contains code. */
3560 /* Both complaints are valid: one gives symbol sym_name,
3561 the other the offending symbol type. */
3562 complaint (_("unknown local symbol %s"),
3564 complaint (_("with type %d"), sh
.st
);
3568 /* Use this gdb symbol. */
3569 add_psymbol_to_list (sym_name
, true,
3570 VAR_DOMAIN
, theclass
, section
,
3571 psymbol_placement::STATIC
,
3572 sh
.value
, psymtab_language
, objfile
);
3574 cur_sdx
++; /* Go to next file symbol. */
3577 /* Now do enter the external symbols. */
3578 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3579 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3580 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3581 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3582 for (; --cur_sdx
>= 0; ext_ptr
++)
3584 enum address_class theclass
;
3589 if (ext_ptr
->ifd
!= f_idx
)
3590 internal_error (__FILE__
, __LINE__
,
3591 _("failed internal consistency check"));
3592 psh
= &ext_ptr
->asym
;
3594 /* Do not add undefined symbols to the partial symbol table. */
3595 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3598 svalue
= psh
->value
;
3604 section
= SECT_OFF_TEXT (objfile
);
3611 section
= SECT_OFF_DATA (objfile
);
3615 section
= SECT_OFF_BSS (objfile
);
3622 /* These are generated for static symbols in .o files,
3627 /* External procedure symbols have been entered
3628 into the minimal symbol table in pass 2 above.
3629 Ignore them, as parse_external will ignore them too. */
3632 theclass
= LOC_LABEL
;
3635 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3636 /* Pretend it's global. */
3639 /* Global common symbols are resolved by the runtime loader,
3641 if (SC_IS_COMMON (psh
->sc
))
3644 theclass
= LOC_STATIC
;
3647 char *sym_name
= debug_info
->ssext
+ psh
->iss
;
3648 add_psymbol_to_list (sym_name
, true,
3649 VAR_DOMAIN
, theclass
,
3651 psymbol_placement::GLOBAL
,
3652 svalue
, psymtab_language
, objfile
);
3656 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3657 empty and put on the free list. */
3658 fdr_to_pst
[f_idx
].pst
3659 = dbx_end_psymtab (objfile
, save_pst
,
3660 psymtab_include_list
, includes_used
,
3661 -1, save_pst
->raw_text_high (),
3662 dependency_list
, dependencies_used
,
3665 dependencies_used
= 0;
3667 /* The objfile has its functions reordered if this partial symbol
3668 table overlaps any other partial symbol table.
3669 We cannot assume a reordered objfile if a partial symbol table
3670 is contained within another partial symbol table, as partial symbol
3671 tables for include files with executable code are contained
3672 within the partial symbol table for the including source file,
3673 and we do not want to flag the objfile reordered for these cases.
3675 This strategy works well for Irix-5.2 shared libraries, but we
3676 might have to use a more elaborate (and slower) algorithm for
3678 save_pst
= fdr_to_pst
[f_idx
].pst
;
3679 if (save_pst
!= NULL
3680 && save_pst
->text_low_valid
3681 && !(objfile
->flags
& OBJF_REORDERED
))
3683 for (partial_symtab
*iter
: objfile
->psymtabs ())
3685 if (save_pst
!= iter
3686 && save_pst
->raw_text_low () >= iter
->raw_text_low ()
3687 && save_pst
->raw_text_low () < iter
->raw_text_high ()
3688 && save_pst
->raw_text_high () > iter
->raw_text_high ())
3690 objfile
->flags
|= OBJF_REORDERED
;
3697 /* Now scan the FDRs for dependencies. */
3698 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3700 fh
= f_idx
+ debug_info
->fdr
;
3701 pst
= fdr_to_pst
[f_idx
].pst
;
3706 /* This should catch stabs-in-ecoff. */
3710 /* Skip the first file indirect entry as it is a self dependency for
3711 source files or a reverse .h -> .c dependency for header files. */
3712 pst
->number_of_dependencies
= 0;
3714 = objfile
->partial_symtabs
->allocate_dependencies (fh
->crfd
- 1);
3715 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3719 (*swap_rfd_in
) (cur_bfd
,
3720 ((char *) debug_info
->external_rfd
3721 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3723 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3725 complaint (_("bad file number %ld"), rh
);
3729 /* Skip self dependencies of header files. */
3733 /* Do not add to dependency list if psymtab was empty. */
3734 if (fdr_to_pst
[rh
].pst
== NULL
)
3736 pst
->dependencies
[pst
->number_of_dependencies
++]
3737 = fdr_to_pst
[rh
].pst
;
3741 /* Remove the dummy psymtab created for -O3 images above, if it is
3742 still empty, to enable the detection of stripped executables. */
3743 partial_symtab
*pst_del
= objfile
->partial_symtabs
->psymtabs
;
3744 if (pst_del
->next
== NULL
3745 && pst_del
->number_of_dependencies
== 0
3746 && pst_del
->n_global_syms
== 0
3747 && pst_del
->n_static_syms
== 0)
3748 objfile
->partial_symtabs
->discard_psymtab (pst_del
);
3751 /* If the current psymbol has an enumerated type, we need to add
3752 all the enum constants to the partial symbol table. */
3755 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3758 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3759 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3760 char *ext_sym
= ((char *) debug_info
->external_sym
3761 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3771 /* It is an enumerated type if the next symbol entry is a stMember
3772 and its auxiliary index is indexNil or its auxiliary entry
3773 is a plain btNil or btVoid.
3774 Alpha cc -migrate enums are recognized by a zero index and
3775 a zero symbol value.
3776 DU 4.0 cc enums are recognized by a member type of btEnum without
3777 qualifiers and a zero symbol value. */
3778 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3779 if (sh
.st
!= stMember
)
3782 if (sh
.index
== indexNil
3783 || (sh
.index
== 0 && svalue
== 0))
3785 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3786 &(debug_info
->external_aux
3787 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3789 if ((tir
.bt
!= btNil
3791 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3792 || tir
.tq0
!= tqNil
)
3804 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3805 if (sh
.st
!= stMember
)
3807 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3809 /* Note that the value doesn't matter for enum constants
3810 in psymtabs, just in symtabs. */
3811 add_psymbol_to_list (name
, true,
3812 VAR_DOMAIN
, LOC_CONST
, -1,
3813 psymbol_placement::STATIC
, 0,
3814 psymtab_language
, objfile
);
3815 ext_sym
+= external_sym_size
;
3819 /* Get the next symbol. OBJFILE is unused. */
3822 mdebug_next_symbol_text (struct objfile
*objfile
)
3827 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3828 ((char *) debug_info
->external_sym
3829 + ((cur_fdr
->isymBase
+ cur_sdx
)
3830 * debug_swap
->external_sym_size
)),
3832 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3835 /* Ancillary function to psymtab_to_symtab(). Does all the work
3836 for turning the partial symtab PST into a symtab, recurring
3837 first on all dependent psymtabs. The argument FILENAME is
3838 only passed so we can see in debug stack traces what file
3841 This function has a split personality, based on whether the
3842 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3843 The flow of control and even the memory allocation differs. FIXME. */
3846 psymtab_to_symtab_1 (struct objfile
*objfile
,
3847 legacy_psymtab
*pst
, const char *filename
)
3849 bfd_size_type external_sym_size
;
3850 bfd_size_type external_pdr_size
;
3851 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3852 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3854 struct compunit_symtab
*cust
= NULL
;
3856 struct linetable
*lines
;
3857 CORE_ADDR lowest_pdr_addr
= 0;
3858 int last_symtab_ended
= 0;
3859 const section_offsets
§ion_offsets
= objfile
->section_offsets
;
3865 /* Read in all partial symtabs on which this one is dependent.
3866 NOTE that we do have circular dependencies, sigh. We solved
3867 that by setting pst->readin before this point. */
3869 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3870 if (!pst
->dependencies
[i
]->readin
)
3872 /* Inform about additional files to be read in. */
3875 fputs_filtered (" ", gdb_stdout
);
3877 fputs_filtered ("and ", gdb_stdout
);
3879 printf_filtered ("%s...",
3880 pst
->dependencies
[i
]->filename
);
3881 wrap_here (""); /* Flush output */
3882 gdb_flush (gdb_stdout
);
3884 /* We only pass the filename for debug purposes. */
3885 psymtab_to_symtab_1 (objfile
, (legacy_psymtab
*) pst
->dependencies
[i
],
3886 pst
->dependencies
[i
]->filename
);
3889 /* Do nothing if this is a dummy psymtab. */
3891 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3892 && !pst
->text_low_valid
&& !pst
->text_high_valid
)
3895 /* Now read the symbols for this symtab. */
3897 cur_bfd
= CUR_BFD (pst
);
3898 debug_swap
= DEBUG_SWAP (pst
);
3899 debug_info
= DEBUG_INFO (pst
);
3900 pending_list
= PENDING_LIST (pst
);
3901 external_sym_size
= debug_swap
->external_sym_size
;
3902 external_pdr_size
= debug_swap
->external_pdr_size
;
3903 swap_sym_in
= debug_swap
->swap_sym_in
;
3904 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3905 mdebugread_objfile
= objfile
;
3906 cur_fd
= FDR_IDX (pst
);
3907 fh
= ((cur_fd
== -1)
3909 : debug_info
->fdr
+ cur_fd
);
3912 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3913 processing_gcc_compilation
= 0;
3914 if (fh
!= NULL
&& fh
->csym
>= 2)
3918 (*swap_sym_in
) (cur_bfd
,
3919 ((char *) debug_info
->external_sym
3920 + (fh
->isymBase
+ 1) * external_sym_size
),
3922 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3925 /* We indicate that this is a GCC compilation so that certain
3926 features will be enabled in stabsread/dbxread. */
3927 processing_gcc_compilation
= 2;
3931 if (processing_gcc_compilation
!= 0)
3933 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3935 /* This symbol table contains stabs-in-ecoff entries. */
3937 /* Parse local symbols first. */
3939 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
3941 mdebugread_objfile
= NULL
;
3944 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3950 (*swap_sym_in
) (cur_bfd
,
3951 (((char *) debug_info
->external_sym
)
3952 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3954 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3956 /* XXX This is a hack. It will go away! */
3957 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3959 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3960 enum language language
= PST_PRIVATE (pst
)->pst_language
;
3962 /* We should never get non N_STAB symbols here, but they
3963 should be harmless, so keep process_one_symbol from
3964 complaining about them. */
3965 if (type_code
& N_STAB
)
3967 /* If we found a trailing N_SO with no name, process
3968 it here instead of in process_one_symbol, so we
3969 can keep a handle to its symtab. The symtab
3970 would otherwise be ended twice, once in
3971 process_one_symbol, and once after this loop. */
3972 if (type_code
== N_SO
3973 && get_last_source_file ()
3974 && previous_stab_code
!= (unsigned char) N_SO
3977 valu
+= section_offsets
[SECT_OFF_TEXT (objfile
)];
3978 previous_stab_code
= N_SO
;
3979 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
3981 last_symtab_ended
= 1;
3985 last_symtab_ended
= 0;
3986 process_one_symbol (type_code
, 0, valu
, name
,
3987 section_offsets
, objfile
, language
);
3990 /* Similarly a hack. */
3991 else if (name
[0] == '#')
3993 process_one_symbol (N_SLINE
, 0, valu
, name
,
3994 section_offsets
, objfile
, language
);
3996 if (type_code
== N_FUN
)
3998 /* Make up special symbol to contain
3999 procedure specific info. */
4000 mdebug_extra_func_info
*e
4001 = OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
4002 mdebug_extra_func_info
);
4003 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4005 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4006 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4007 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4008 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4009 e
->pdr
.framereg
= -1;
4010 add_symbol_to_list (s
, get_local_symbols ());
4013 else if (sh
.st
== stLabel
)
4015 if (sh
.index
== indexNil
)
4017 /* This is what the gcc2_compiled and __gnu_compiled_*
4018 show up as. So don't complain. */
4023 /* Handle encoded stab line number. */
4024 valu
+= section_offsets
[SECT_OFF_TEXT (objfile
)];
4025 record_line (get_current_subfile (), sh
.index
,
4026 gdbarch_addr_bits_remove (gdbarch
, valu
));
4029 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4030 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4031 /* These are generated by gcc-2.x, do not complain. */
4034 complaint (_("unknown stabs symbol %s"), name
);
4037 if (! last_symtab_ended
)
4039 cust
= end_symtab (pst
->raw_text_high (), SECT_OFF_TEXT (objfile
));
4043 /* There used to be a call to sort_blocks here, but this should not
4044 be necessary for stabs symtabs. And as sort_blocks modifies the
4045 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4046 it did the wrong thing if the first procedure in a file was
4047 generated via asm statements. */
4049 /* Fill in procedure info next. */
4057 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4059 pdr_ptr
= ((char *) debug_info
->external_pdr
4060 + fh
->ipdFirst
* external_pdr_size
);
4061 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4062 pdr_in
= pr_block
.data ();
4065 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4067 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4069 /* Determine lowest PDR address, the PDRs are not always
4071 if (pdr_in
== pr_block
.data ())
4072 lowest_pdr_addr
= pdr_in
->adr
;
4073 else if (pdr_in
->adr
< lowest_pdr_addr
)
4074 lowest_pdr_addr
= pdr_in
->adr
;
4077 pdr_in
= pr_block
.data ();
4078 pdr_in_end
= pdr_in
+ fh
->cpd
;
4079 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4080 parse_procedure (pdr_in
, cust
, pst
);
4085 /* This symbol table contains ordinary ecoff entries. */
4093 cust
= new_symtab ("unknown", 0, objfile
);
4097 maxlines
= 2 * fh
->cline
;
4098 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4100 /* The proper language was already determined when building
4101 the psymtab, use it. */
4102 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4105 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4107 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4109 /* Get a new lexical context. */
4111 push_parse_stack ();
4112 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4113 top_stack
->cur_block
4114 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4115 BLOCK_START (top_stack
->cur_block
) = pst
->text_low (objfile
);
4116 BLOCK_END (top_stack
->cur_block
) = 0;
4117 top_stack
->blocktype
= stFile
;
4118 top_stack
->cur_type
= 0;
4119 top_stack
->procadr
= 0;
4120 top_stack
->numargs
= 0;
4121 found_ecoff_debugging_info
= 0;
4128 /* Parse local symbols first. */
4129 sym_ptr
= ((char *) debug_info
->external_sym
4130 + fh
->isymBase
* external_sym_size
);
4131 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4132 while (sym_ptr
< sym_end
)
4137 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4138 c
= parse_symbol (&sh
,
4139 debug_info
->external_aux
+ fh
->iauxBase
,
4140 sym_ptr
, fh
->fBigendian
,
4141 section_offsets
, objfile
);
4142 sym_ptr
+= c
* external_sym_size
;
4145 /* Linenumbers. At the end, check if we can save memory.
4146 parse_lines has to look ahead an arbitrary number of PDR
4147 structures, so we swap them all first. */
4155 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4157 pdr_ptr
= ((char *) debug_info
->external_pdr
4158 + fh
->ipdFirst
* external_pdr_size
);
4159 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4160 pdr_in
= pr_block
.data ();
4163 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4165 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4167 /* Determine lowest PDR address, the PDRs are not always
4169 if (pdr_in
== pr_block
.data ())
4170 lowest_pdr_addr
= pdr_in
->adr
;
4171 else if (pdr_in
->adr
< lowest_pdr_addr
)
4172 lowest_pdr_addr
= pdr_in
->adr
;
4175 parse_lines (fh
, pr_block
.data (), lines
, maxlines
,
4176 pst
->text_low (objfile
), lowest_pdr_addr
);
4177 if (lines
->nitems
< fh
->cline
)
4178 lines
= shrink_linetable (lines
);
4180 /* Fill in procedure info next. */
4181 pdr_in
= pr_block
.data ();
4182 pdr_in_end
= pdr_in
+ fh
->cpd
;
4183 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4184 parse_procedure (pdr_in
, NULL
, pst
);
4188 size
= lines
->nitems
;
4191 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4192 = ((struct linetable
*)
4193 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4194 lines
, (sizeof (struct linetable
)
4195 + size
* sizeof (lines
->item
))));
4198 /* .. and our share of externals.
4199 XXX use the global list to speed up things here. How?
4200 FIXME, Maybe quit once we have found the right number of ext's? */
4201 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4202 top_stack
->cur_block
4203 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4205 top_stack
->blocktype
= stFile
;
4207 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4208 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4209 parse_external (ext_ptr
, fh
->fBigendian
,
4210 section_offsets
, objfile
);
4212 /* If there are undefined symbols, tell the user.
4213 The alpha has an undefined symbol for every symbol that is
4214 from a shared library, so tell the user only if verbose is on. */
4215 if (info_verbose
&& n_undef_symbols
)
4217 printf_filtered (_("File %s contains %d unresolved references:"),
4218 symtab_to_filename_for_display
4219 (COMPUNIT_FILETABS (cust
)),
4221 printf_filtered ("\n\t%4d variables\n\t%4d "
4222 "procedures\n\t%4d labels\n",
4223 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4224 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4229 sort_blocks (COMPUNIT_FILETABS (cust
));
4232 /* Now link the psymtab and the symtab. */
4233 pst
->compunit_symtab
= cust
;
4235 mdebugread_objfile
= NULL
;
4238 /* Ancillary parsing procedures. */
4240 /* Return 1 if the symbol pointed to by SH has a cross reference
4241 to an opaque aggregate type, else 0. */
4244 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4251 if (sh
->index
== indexNil
)
4254 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4255 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4256 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4260 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4261 if (rn
->rfd
== 0xfff)
4262 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4270 /* Lookup the type at relative index RN. Return it in TPP
4271 if found and in any event come up with its name PNAME.
4272 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4273 Return value says how many aux symbols we ate. */
4276 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4277 enum type_code type_code
,
4278 /* Use to alloc new type if none is found. */
4279 const char **pname
, int bigend
, const char *sym_name
)
4288 struct mdebug_pending
*pend
;
4292 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4294 /* Escape index means 'the next one'. */
4295 if (rn
->rfd
== 0xfff)
4298 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4305 /* mips cc uses a rf of -1 for opaque struct definitions.
4306 Set TYPE_STUB for these types so that check_typedef will
4307 resolve them if the struct gets defined in another compilation unit. */
4310 *pname
= "<undefined>";
4311 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4312 TYPE_STUB (*tpp
) = 1;
4316 /* mips cc uses an escaped rn->index of 0 for struct return types
4317 of procedures that were compiled without -g. These will always remain
4319 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4321 *pname
= "<undefined>";
4325 /* Find the relative file descriptor and the symbol in it. */
4326 fh
= get_rfd (fd
, rf
);
4327 xref_fd
= fh
- debug_info
->fdr
;
4329 if (rn
->index
>= fh
->csym
)
4331 /* File indirect entry is corrupt. */
4332 *pname
= "<illegal>";
4333 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4337 /* If we have processed this symbol then we left a forwarding
4338 pointer to the type in the pending list. If not, we`ll put
4339 it in a list of pending types, to be processed later when
4340 the file will be. In any event, we collect the name for the
4343 esh
= ((char *) debug_info
->external_sym
4344 + ((fh
->isymBase
+ rn
->index
)
4345 * debug_swap
->external_sym_size
));
4346 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4348 /* Make sure that this type of cross reference can be handled. */
4349 if ((sh
.sc
!= scInfo
4350 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4351 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4352 && sh
.st
!= stEnum
))
4353 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4355 /* File indirect entry is corrupt. */
4356 *pname
= "<illegal>";
4357 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4361 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4363 pend
= is_pending_symbol (fh
, esh
);
4368 /* We have not yet seen this type. */
4370 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4374 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4376 a) forward declarations of structs/unions/enums which are not
4377 defined in this compilation unit.
4378 For these the type will be void. This is a bad design decision
4379 as cross referencing across compilation units is impossible
4380 due to the missing name.
4381 b) forward declarations of structs/unions/enums/typedefs which
4382 are defined later in this file or in another file in the same
4383 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4384 Simply cross reference those again to get the true type.
4385 The forward references are not entered in the pending list and
4386 in the symbol table. */
4388 (*debug_swap
->swap_tir_in
) (bigend
,
4389 &(debug_info
->external_aux
4390 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4392 if (tir
.tq0
!= tqNil
)
4393 complaint (_("illegal tq0 in forward typedef for %s"), sym_name
);
4397 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4398 *pname
= "<undefined>";
4405 (debug_info
->external_aux
4406 + fh
->iauxBase
+ sh
.index
+ 1),
4407 tpp
, type_code
, pname
,
4408 fh
->fBigendian
, sym_name
);
4412 /* Follow a forward typedef. This might recursively
4413 call cross_ref till we get a non typedef'ed type.
4414 FIXME: This is not correct behaviour, but gdb currently
4415 cannot handle typedefs without type copying. Type
4416 copying is impossible as we might have mutual forward
4417 references between two files and the copied type would not
4418 get filled in when we later parse its definition. */
4419 *tpp
= parse_type (xref_fd
,
4420 debug_info
->external_aux
+ fh
->iauxBase
,
4424 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4425 add_pending (fh
, esh
, *tpp
);
4429 complaint (_("illegal bt %d in forward typedef for %s"), tir
.bt
,
4431 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4436 else if (sh
.st
== stTypedef
)
4438 /* Parse the type for a normal typedef. This might recursively call
4439 cross_ref till we get a non typedef'ed type.
4440 FIXME: This is not correct behaviour, but gdb currently
4441 cannot handle typedefs without type copying. But type copying is
4442 impossible as we might have mutual forward references between
4443 two files and the copied type would not get filled in when
4444 we later parse its definition. */
4445 *tpp
= parse_type (xref_fd
,
4446 debug_info
->external_aux
+ fh
->iauxBase
,
4450 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4454 /* Cross reference to a struct/union/enum which is defined
4455 in another file in the same compilation unit but that file
4456 has not been parsed yet.
4457 Initialize the type only, it will be filled in when
4458 it's definition is parsed. */
4459 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4461 add_pending (fh
, esh
, *tpp
);
4464 /* We used one auxent normally, two if we got a "next one" rf. */
4469 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4470 keeping the symtab sorted. */
4472 static struct symbol
*
4473 mylookup_symbol (const char *name
, const struct block
*block
,
4474 domain_enum domain
, enum address_class theclass
)
4476 struct block_iterator iter
;
4481 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4483 if (sym
->linkage_name ()[0] == inc
4484 && SYMBOL_DOMAIN (sym
) == domain
4485 && SYMBOL_CLASS (sym
) == theclass
4486 && strcmp (sym
->linkage_name (), name
) == 0)
4490 block
= BLOCK_SUPERBLOCK (block
);
4492 return mylookup_symbol (name
, block
, domain
, theclass
);
4497 /* Add a new symbol S to a block B. */
4500 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4502 symbol_set_symtab (s
, symtab
);
4503 mdict_add_symbol (BLOCK_MULTIDICT (b
), s
);
4506 /* Add a new block B to a symtab S. */
4509 add_block (struct block
*b
, struct symtab
*s
)
4511 /* Cast away "const", but that's ok because we're building the
4512 symtab and blockvector here. */
4513 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4515 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4516 (sizeof (struct blockvector
)
4517 + BLOCKVECTOR_NBLOCKS (bv
)
4518 * sizeof (bv
->block
)));
4519 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4520 SYMTAB_BLOCKVECTOR (s
) = bv
;
4522 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4525 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4526 MIPS' linenumber encoding might need more than one byte
4527 to describe it, LAST is used to detect these continuation lines.
4529 Combining lines with the same line number seems like a bad idea.
4530 E.g: There could be a line number entry with the same line number after the
4531 prologue and GDB should not ignore it (this is a better way to find
4532 a prologue than mips_skip_prologue).
4533 But due to the compressed line table format there are line number entries
4534 for the same line which are needed to bridge the gap to the next
4535 line number entry. These entries have a bogus address info with them
4536 and we are unable to tell them from intended duplicate line number
4538 This is another reason why -ggdb debugging format is preferable. */
4541 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4543 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4544 Change them to something sensible. */
4548 last
= -2; /* Make sure we record first line. */
4550 if (last
== lineno
) /* Skip continuation lines. */
4553 lt
->item
[lt
->nitems
].line
= lineno
;
4554 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4558 /* Sorting and reordering procedures. */
4560 /* Blocks with a smaller low bound should come first. */
4563 block_is_less_than (const struct block
*b1
, const struct block
*b2
)
4565 CORE_ADDR start1
= BLOCK_START (b1
);
4566 CORE_ADDR start2
= BLOCK_START (b2
);
4568 if (start1
!= start2
)
4569 return start1
< start2
;
4571 return (BLOCK_END (b2
)) < (BLOCK_END (b1
));
4574 /* Sort the blocks of a symtab S.
4575 Reorder the blocks in the blockvector by code-address,
4576 as required by some MI search routines. */
4579 sort_blocks (struct symtab
*s
)
4581 /* We have to cast away const here, but this is ok because we're
4582 constructing the blockvector in this code. */
4583 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4585 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4588 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4589 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4590 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4591 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4595 * This is very unfortunate: normally all functions are compiled in
4596 * the order they are found, but if the file is compiled -O3 things
4597 * are very different. It would be nice to find a reliable test
4598 * to detect -O3 images in advance.
4600 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4601 std::sort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4602 &BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)),
4603 block_is_less_than
);
4607 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4609 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4610 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4611 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4612 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4615 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4616 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4618 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4619 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4620 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4621 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4625 /* Constructor/restructor/destructor procedures. */
4627 /* Allocate a new symtab for NAME. Needs an estimate of how many
4628 linenumbers MAXLINES we'll put in it. */
4630 static struct compunit_symtab
*
4631 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4633 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4634 struct symtab
*symtab
;
4635 struct blockvector
*bv
;
4638 add_compunit_symtab_to_objfile (cust
);
4639 symtab
= allocate_symtab (cust
, name
);
4641 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4642 lang
= compunit_language (cust
);
4644 /* All symtabs must have at least two blocks. */
4646 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4647 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4648 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4649 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4650 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4652 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4656 /* Allocate a new partial_symtab NAME. */
4658 static legacy_psymtab
*
4659 new_psymtab (const char *name
, struct objfile
*objfile
)
4661 legacy_psymtab
*psymtab
;
4663 psymtab
= new legacy_psymtab (name
, objfile
);
4665 /* Keep a backpointer to the file's symbols. */
4667 psymtab
->read_symtab_private
4668 = OBSTACK_ZALLOC (&objfile
->objfile_obstack
, symloc
);
4669 CUR_BFD (psymtab
) = cur_bfd
;
4670 DEBUG_SWAP (psymtab
) = debug_swap
;
4671 DEBUG_INFO (psymtab
) = debug_info
;
4672 PENDING_LIST (psymtab
) = pending_list
;
4674 /* The way to turn this into a symtab is to call... */
4675 psymtab
->legacy_read_symtab
= mdebug_read_symtab
;
4680 /* Allocate a linetable array of the given SIZE. Since the struct
4681 already includes one item, we subtract one when calculating the
4682 proper size to allocate. */
4684 static struct linetable
*
4685 new_linetable (int size
)
4687 struct linetable
*l
;
4691 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4692 l
= (struct linetable
*) xmalloc (size
);
4697 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4698 I am not so sure about the 3.4 ones.
4700 Since the struct linetable already includes one item, we subtract one when
4701 calculating the proper size to allocate. */
4703 static struct linetable
*
4704 shrink_linetable (struct linetable
*lt
)
4706 return (struct linetable
*) xrealloc ((void *) lt
,
4707 (sizeof (struct linetable
)
4709 * sizeof (lt
->item
))));
4712 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4714 static struct blockvector
*
4715 new_bvect (int nblocks
)
4717 struct blockvector
*bv
;
4720 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4721 bv
= (struct blockvector
*) xzalloc (size
);
4723 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4728 /* Allocate and zero a new block of language LANGUAGE, and set its
4729 BLOCK_MULTIDICT. If function is non-zero, assume the block is
4730 associated to a function, and make sure that the symbols are stored
4731 linearly; otherwise, store them hashed. */
4733 static struct block
*
4734 new_block (enum block_type type
, enum language language
)
4736 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4737 allocate the block. Which, in turn, suggests that the block
4738 should be allocated on an obstack. */
4739 struct block
*retval
= XCNEW (struct block
);
4741 if (type
== FUNCTION_BLOCK
)
4742 BLOCK_MULTIDICT (retval
) = mdict_create_linear_expandable (language
);
4744 BLOCK_MULTIDICT (retval
) = mdict_create_hashed_expandable (language
);
4749 /* Create a new symbol with printname NAME. */
4751 static struct symbol
*
4752 new_symbol (const char *name
)
4754 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4756 s
->set_language (psymtab_language
, &mdebugread_objfile
->objfile_obstack
);
4757 s
->compute_and_set_names (name
, true, mdebugread_objfile
->per_bfd
);
4761 /* Create a new type with printname NAME. */
4763 static struct type
*
4764 new_type (char *name
)
4768 t
= alloc_type (mdebugread_objfile
);
4769 TYPE_NAME (t
) = name
;
4770 INIT_CPLUS_SPECIFIC (t
);
4774 /* Read ECOFF debugging information from a BFD section. This is
4775 called from elfread.c. It parses the section into a
4776 ecoff_debug_info struct, and then lets the rest of the file handle
4780 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4781 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4783 bfd
*abfd
= objfile
->obfd
;
4784 struct ecoff_debug_info
*info
;
4786 /* FIXME: It's not clear whether we should be getting minimal symbol
4787 information from .mdebug in an ELF file, or whether we will.
4788 Re-initialize the minimal symbol reader in case we do. */
4790 minimal_symbol_reader
reader (objfile
);
4792 info
= XOBNEW (&objfile
->objfile_obstack
, ecoff_debug_info
);
4794 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4795 error (_("Error reading ECOFF debugging information: %s"),
4796 bfd_errmsg (bfd_get_error ()));
4798 mdebug_build_psymtabs (reader
, objfile
, swap
, info
);
4803 void _initialize_mdebugread ();
4805 _initialize_mdebugread ()
4807 mdebug_register_index
4808 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4809 mdebug_regparm_index
4810 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);