1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2018 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"
71 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
72 We use this define in order to know whether we should override a
73 symbol's ECOFF section with its ELF section. This is necessary in
74 case the symbol's ELF section could not be represented in ECOFF. */
75 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
76 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
78 /* The objfile we are currently reading. */
80 static struct objfile
*mdebugread_objfile
;
84 /* We put a pointer to this structure in the read_symtab_private field
89 /* Index of the FDR that this psymtab represents. */
91 /* The BFD that the psymtab was created from. */
93 const struct ecoff_debug_swap
*debug_swap
;
94 struct ecoff_debug_info
*debug_info
;
95 struct mdebug_pending
**pending_list
;
96 /* Pointer to external symbols for this file. */
98 /* Size of extern_tab. */
100 enum language pst_language
;
103 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
104 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
105 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
106 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
107 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
108 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
110 #define SC_IS_TEXT(sc) ((sc) == scText \
111 || (sc) == scRConst \
114 #define SC_IS_DATA(sc) ((sc) == scData \
119 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
120 #define SC_IS_BSS(sc) ((sc) == scBss)
121 #define SC_IS_SBSS(sc) ((sc) == scSBss)
122 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
124 /* Various complaints about symbol reading that don't abort the process. */
126 index_complaint (const char *arg1
)
128 complaint (_("bad aux index at symbol %s"), arg1
);
132 unknown_ext_complaint (const char *arg1
)
134 complaint (_("unknown external symbol %s"), arg1
);
138 basic_type_complaint (int arg1
, const char *arg2
)
140 complaint (_("cannot map ECOFF basic type 0x%x for %s"),
145 bad_tag_guess_complaint (const char *arg1
)
147 complaint (_("guessed tag type of %s incorrectly"), arg1
);
151 bad_rfd_entry_complaint (const char *arg1
, int arg2
, int arg3
)
153 complaint (_("bad rfd entry for %s: file %d, index %d"),
158 unexpected_type_code_complaint (const char *arg1
)
160 complaint (_("unexpected type code for %s"), arg1
);
163 /* Macros and extra defs. */
165 /* Puns: hard to find whether -g was used and how. */
167 #define MIN_GLEVEL GLEVEL_0
168 #define compare_glevel(a,b) \
169 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
170 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
172 /* Things that really are local to this module. */
174 /* Remember what we deduced to be the source language of this psymtab. */
176 static enum language psymtab_language
= language_unknown
;
182 /* How to parse debugging information for CUR_BFD. */
184 static const struct ecoff_debug_swap
*debug_swap
;
186 /* Pointers to debugging information for CUR_BFD. */
188 static struct ecoff_debug_info
*debug_info
;
190 /* Pointer to current file decriptor record, and its index. */
195 /* Index of current symbol. */
199 /* Note how much "debuggable" this image is. We would like
200 to see at least one FDR with full symbols. */
202 static int max_gdbinfo
;
203 static int max_glevel
;
205 /* When examining .o files, report on undefined symbols. */
207 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
209 /* Pseudo symbol to use when putting stabs into the symbol table. */
211 static char stabs_symbol
[] = STABS_SYMBOL
;
213 /* Nonzero if we have seen ecoff debugging info for a file. */
215 static int found_ecoff_debugging_info
;
217 /* Forward declarations. */
219 static int upgrade_type (int, struct type
**, int, union aux_ext
*,
222 static void parse_partial_symbols (minimal_symbol_reader
&,
225 static int has_opaque_xref (FDR
*, SYMR
*);
227 static int cross_ref (int, union aux_ext
*, struct type
**, enum type_code
,
228 const char **, int, const char *);
230 static struct symbol
*new_symbol (const char *);
232 static struct type
*new_type (char *);
234 enum block_type
{ FUNCTION_BLOCK
, NON_FUNCTION_BLOCK
};
236 static struct block
*new_block (enum block_type
, enum language
);
238 static struct compunit_symtab
*new_symtab (const char *, int, struct objfile
*);
240 static struct linetable
*new_linetable (int);
242 static struct blockvector
*new_bvect (int);
244 static struct type
*parse_type (int, union aux_ext
*, unsigned int, int *,
247 static struct symbol
*mylookup_symbol (const char *, const struct block
*,
248 domain_enum
, enum address_class
);
250 static void sort_blocks (struct symtab
*);
252 static struct partial_symtab
*new_psymtab (const char *, struct objfile
*);
254 static void psymtab_to_symtab_1 (struct objfile
*objfile
,
255 struct partial_symtab
*, const char *);
257 static void add_block (struct block
*, struct symtab
*);
259 static void add_symbol (struct symbol
*, struct symtab
*, struct block
*);
261 static int add_line (struct linetable
*, int, CORE_ADDR
, int);
263 static struct linetable
*shrink_linetable (struct linetable
*);
265 static void handle_psymbol_enumerators (struct objfile
*, FDR
*, int,
268 static const char *mdebug_next_symbol_text (struct objfile
*);
270 /* Exported procedure: Builds a symtab from the partial symtab SELF.
271 Restores the environment in effect when SELF was created, delegates
272 most of the work to an ancillary procedure, and sorts
273 and reorders the symtab list at the end. SELF is not NULL. */
276 mdebug_read_symtab (struct partial_symtab
*self
, struct objfile
*objfile
)
280 printf_filtered (_("Reading in symbols for %s..."), self
->filename
);
281 gdb_flush (gdb_stdout
);
284 next_symbol_text_func
= mdebug_next_symbol_text
;
286 psymtab_to_symtab_1 (objfile
, self
, self
->filename
);
288 /* Match with global symbols. This only needs to be done once,
289 after all of the symtabs and dependencies have been read in. */
290 scan_file_globals (objfile
);
293 printf_filtered (_("done.\n"));
296 /* File-level interface functions. */
298 /* Find a file descriptor given its index RF relative to a file CF. */
301 get_rfd (int cf
, int rf
)
307 fdrs
= debug_info
->fdr
;
309 /* Object files do not have the RFD table, all refs are absolute. */
312 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
313 ((char *) debug_info
->external_rfd
315 * debug_swap
->external_rfd_size
)),
320 /* Return a safer print NAME for a file descriptor. */
326 return "<stripped file>";
329 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
333 /* Read in and parse the symtab of the file OBJFILE. Symbols from
334 different sections are relocated via the SECTION_OFFSETS. */
337 mdebug_build_psymtabs (minimal_symbol_reader
&reader
,
338 struct objfile
*objfile
,
339 const struct ecoff_debug_swap
*swap
,
340 struct ecoff_debug_info
*info
)
342 cur_bfd
= objfile
->obfd
;
346 stabsread_new_init ();
347 free_header_files ();
348 init_header_files ();
350 /* Make sure all the FDR information is swapped in. */
351 if (info
->fdr
== (FDR
*) NULL
)
357 info
->fdr
= (FDR
*) XOBNEWVEC (&objfile
->objfile_obstack
, FDR
,
358 info
->symbolic_header
.ifdMax
);
359 fdr_src
= (char *) info
->external_fdr
;
361 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
363 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
364 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
367 parse_partial_symbols (reader
, objfile
);
370 /* Check to make sure file was compiled with -g. If not, warn the
371 user of this limitation. */
372 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
374 if (max_gdbinfo
== 0)
375 printf_unfiltered (_("\n%s not compiled with -g, "
376 "debugging support is limited.\n"),
378 printf_unfiltered (_("You should compile with -g2 or "
379 "-g3 for best debugging support.\n"));
380 gdb_flush (gdb_stdout
);
385 /* Local utilities */
387 /* Map of FDR indexes to partial symtabs. */
391 struct partial_symtab
*pst
; /* the psymtab proper */
392 long n_globals
; /* exported globals (external symbols) */
393 long globals_offset
; /* cumulative */
397 /* Utility stack, used to nest procedures and blocks properly.
398 It is a doubly linked list, to avoid too many alloc/free.
399 Since we might need it quite a few times it is NOT deallocated
402 static struct parse_stack
404 struct parse_stack
*next
, *prev
;
405 struct symtab
*cur_st
; /* Current symtab. */
406 struct block
*cur_block
; /* Block in it. */
408 /* What are we parsing. stFile, or stBlock are for files and
409 blocks. stProc or stStaticProc means we have seen the start of a
410 procedure, but not the start of the block within in. When we see
411 the start of that block, we change it to stNil, without pushing a
412 new block, i.e. stNil means both a procedure and a block. */
416 struct type
*cur_type
; /* Type we parse fields for. */
417 int cur_field
; /* Field number in cur_type. */
418 CORE_ADDR procadr
; /* Start addres of this procedure. */
419 int numargs
; /* Its argument count. */
422 *top_stack
; /* Top stack ptr */
425 /* Enter a new lexical context. */
428 push_parse_stack (void)
430 struct parse_stack
*newobj
;
432 /* Reuse frames if possible. */
433 if (top_stack
&& top_stack
->prev
)
434 newobj
= top_stack
->prev
;
436 newobj
= XCNEW (struct parse_stack
);
437 /* Initialize new frame with previous content. */
440 struct parse_stack
*prev
= newobj
->prev
;
442 *newobj
= *top_stack
;
443 top_stack
->prev
= newobj
;
445 newobj
->next
= top_stack
;
450 /* Exit a lexical context. */
453 pop_parse_stack (void)
458 top_stack
= top_stack
->next
;
462 /* Cross-references might be to things we haven't looked at
463 yet, e.g. type references. To avoid too many type
464 duplications we keep a quick fixup table, an array
465 of lists of references indexed by file descriptor. */
467 struct mdebug_pending
469 struct mdebug_pending
*next
; /* link */
470 char *s
; /* the unswapped symbol */
471 struct type
*t
; /* its partial type descriptor */
475 /* The pending information is kept for an entire object file. We
476 allocate the pending information table when we create the partial
477 symbols, and we store a pointer to the single table in each
480 static struct mdebug_pending
**pending_list
;
482 /* Check whether we already saw symbol SH in file FH. */
484 static struct mdebug_pending
*
485 is_pending_symbol (FDR
*fh
, char *sh
)
487 int f_idx
= fh
- debug_info
->fdr
;
488 struct mdebug_pending
*p
;
490 /* Linear search is ok, list is typically no more than 10 deep. */
491 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
497 /* Add a new symbol SH of type T. */
500 add_pending (FDR
*fh
, char *sh
, struct type
*t
)
502 int f_idx
= fh
- debug_info
->fdr
;
503 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
505 /* Make sure we do not make duplicates. */
508 p
= XOBNEW (&mdebugread_objfile
->objfile_obstack
, mdebug_pending
);
511 p
->next
= pending_list
[f_idx
];
512 pending_list
[f_idx
] = p
;
517 /* Parsing Routines proper. */
520 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
522 complaint (_("bad register number %d (max %d) in symbol %s"),
523 regnum
, num_regs
- 1, sym
);
526 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
527 For blocks, procedures and types we open a new lexical context.
528 This is basically just a big switch on the symbol's type. Argument
529 AX is the base pointer of aux symbols for this file (fh->iauxBase).
530 EXT_SH points to the unswapped symbol, which is needed for struct,
531 union, etc., types; it is NULL for an EXTR. BIGEND says whether
532 aux symbols are big-endian or little-endian. Return count of
533 SYMR's handled (normally one). */
536 mdebug_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
538 int regno
= gdbarch_ecoff_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
541 || regno
>= (gdbarch_num_regs (gdbarch
)
542 + gdbarch_num_pseudo_regs (gdbarch
)))
544 reg_value_complaint (regno
,
545 gdbarch_num_regs (gdbarch
)
546 + gdbarch_num_pseudo_regs (gdbarch
),
547 SYMBOL_PRINT_NAME (sym
));
549 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
555 static const struct symbol_register_ops mdebug_register_funcs
= {
559 /* The "aclass" indices for computed symbols. */
561 static int mdebug_register_index
;
562 static int mdebug_regparm_index
;
564 /* Common code for symbols describing data. */
567 add_data_symbol (SYMR
*sh
, union aux_ext
*ax
, int bigend
,
568 struct symbol
*s
, int aclass_index
, struct block
*b
,
569 struct objfile
*objfile
, const char *name
)
571 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
572 SYMBOL_ACLASS_INDEX (s
) = aclass_index
;
573 add_symbol (s
, top_stack
->cur_st
, b
);
575 /* Type could be missing if file is compiled without debugging info. */
576 if (SC_IS_UNDEF (sh
->sc
)
577 || sh
->sc
== scNil
|| sh
->index
== indexNil
)
578 SYMBOL_TYPE (s
) = objfile_type (objfile
)->nodebug_data_symbol
;
580 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
581 /* Value of a data symbol is its memory address. */
585 parse_symbol (SYMR
*sh
, union aux_ext
*ax
, char *ext_sh
, int bigend
,
586 struct section_offsets
*section_offsets
, struct objfile
*objfile
)
588 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
589 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
590 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
594 struct mdebug_pending
*pend
;
599 long svalue
= sh
->value
;
602 if (ext_sh
== (char *) NULL
)
603 name
= debug_info
->ssext
+ sh
->iss
;
605 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
611 /* Do not relocate relative values.
612 The value of a stEnd symbol is the displacement from the
613 corresponding start symbol value.
614 The value of a stBlock symbol is the displacement from the
615 procedure address. */
616 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
617 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT (objfile
));
624 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA (objfile
));
628 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS (objfile
));
637 case stGlobal
: /* External symbol, goes into global block. */
638 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
640 s
= new_symbol (name
);
641 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
642 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
645 case stStatic
: /* Static data, goes into current block. */
646 b
= top_stack
->cur_block
;
647 s
= new_symbol (name
);
648 if (SC_IS_COMMON (sh
->sc
))
650 /* It is a FORTRAN common block. At least for SGI Fortran the
651 address is not in the symbol; we need to fix it later in
652 scan_file_globals. */
653 int bucket
= hashname (SYMBOL_LINKAGE_NAME (s
));
654 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
655 global_sym_chain
[bucket
] = s
;
658 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
659 add_data_symbol (sh
, ax
, bigend
, s
, LOC_STATIC
, b
, objfile
, name
);
662 case stLocal
: /* Local variable, goes into current block. */
663 b
= top_stack
->cur_block
;
664 s
= new_symbol (name
);
665 SYMBOL_VALUE (s
) = svalue
;
666 if (sh
->sc
== scRegister
)
667 add_data_symbol (sh
, ax
, bigend
, s
, mdebug_register_index
,
670 add_data_symbol (sh
, ax
, bigend
, s
, LOC_LOCAL
,
674 case stParam
: /* Arg to procedure, goes into current
677 found_ecoff_debugging_info
= 1;
678 top_stack
->numargs
++;
680 /* Special GNU C++ name. */
681 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
682 name
= "this"; /* FIXME, not alloc'd in obstack. */
683 s
= new_symbol (name
);
685 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
686 SYMBOL_IS_ARGUMENT (s
) = 1;
690 /* Pass by value in register. */
691 SYMBOL_ACLASS_INDEX (s
) = mdebug_register_index
;
694 /* Pass by reference on stack. */
695 SYMBOL_ACLASS_INDEX (s
) = LOC_REF_ARG
;
698 /* Pass by reference in register. */
699 SYMBOL_ACLASS_INDEX (s
) = mdebug_regparm_index
;
702 /* Pass by value on stack. */
703 SYMBOL_ACLASS_INDEX (s
) = LOC_ARG
;
706 SYMBOL_VALUE (s
) = svalue
;
707 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
708 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
711 case stLabel
: /* label, goes into current block. */
712 s
= new_symbol (name
);
713 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
; /* So that it can be used */
714 SYMBOL_ACLASS_INDEX (s
) = LOC_LABEL
; /* but not misused. */
715 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
716 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_int
;
717 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
720 case stProc
: /* Procedure, usually goes into global block. */
721 case stStaticProc
: /* Static procedure, goes into current block. */
722 /* For stProc symbol records, we need to check the storage class
723 as well, as only (stProc, scText) entries represent "real"
724 procedures - See the Compaq document titled "Object File /
725 Symbol Table Format Specification" for more information.
726 If the storage class is not scText, we discard the whole block
727 of symbol records for this stProc. */
728 if (sh
->st
== stProc
&& sh
->sc
!= scText
)
730 char *ext_tsym
= ext_sh
;
731 int keep_counting
= 1;
734 while (keep_counting
)
736 ext_tsym
+= external_sym_size
;
737 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
747 complaint (_("unknown symbol type 0x%x"), sh
->st
);
753 s
= new_symbol (name
);
754 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
755 SYMBOL_ACLASS_INDEX (s
) = LOC_BLOCK
;
756 /* Type of the return value. */
757 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
758 t
= objfile_type (objfile
)->builtin_int
;
761 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
762 if (strcmp (name
, "malloc") == 0
763 && TYPE_CODE (t
) == TYPE_CODE_VOID
)
765 /* I don't know why, but, at least under Alpha GNU/Linux,
766 when linking against a malloc without debugging
767 symbols, its read as a function returning void---this
768 is bad because it means we cannot call functions with
769 string arguments interactively; i.e., "call
770 printf("howdy\n")" would fail with the error message
771 "program has no memory available". To avoid this, we
772 patch up the type and make it void*
773 instead. (davidm@azstarnet.com). */
774 t
= make_pointer_type (t
, NULL
);
777 b
= top_stack
->cur_block
;
778 if (sh
->st
== stProc
)
780 const struct blockvector
*bv
781 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
783 /* The next test should normally be true, but provides a
784 hook for nested functions (which we don't want to make
786 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
787 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
788 /* Irix 5 sometimes has duplicate names for the same
789 function. We want to add such names up at the global
790 level, not as a nested function. */
791 else if (sh
->value
== top_stack
->procadr
)
792 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
794 add_symbol (s
, top_stack
->cur_st
, b
);
796 /* Make a type for the procedure itself. */
797 SYMBOL_TYPE (s
) = lookup_function_type (t
);
799 /* All functions in C++ have prototypes. For C we don't have enough
800 information in the debug info. */
801 if (SYMBOL_LANGUAGE (s
) == language_cplus
)
802 TYPE_PROTOTYPED (SYMBOL_TYPE (s
)) = 1;
804 /* Create and enter a new lexical context. */
805 b
= new_block (FUNCTION_BLOCK
, SYMBOL_LANGUAGE (s
));
806 SYMBOL_BLOCK_VALUE (s
) = b
;
807 BLOCK_FUNCTION (b
) = s
;
808 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
809 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
810 add_block (b
, top_stack
->cur_st
);
812 /* Not if we only have partial info. */
813 if (SC_IS_UNDEF (sh
->sc
) || sh
->sc
== scNil
)
817 top_stack
->cur_block
= b
;
818 top_stack
->blocktype
= sh
->st
;
819 top_stack
->cur_type
= SYMBOL_TYPE (s
);
820 top_stack
->cur_field
= -1;
821 top_stack
->procadr
= sh
->value
;
822 top_stack
->numargs
= 0;
825 /* Beginning of code for structure, union, and enum definitions.
826 They all share a common set of local variables, defined here. */
828 enum type_code type_code
;
834 case stStruct
: /* Start a block defining a struct type. */
835 type_code
= TYPE_CODE_STRUCT
;
836 goto structured_common
;
838 case stUnion
: /* Start a block defining a union type. */
839 type_code
= TYPE_CODE_UNION
;
840 goto structured_common
;
842 case stEnum
: /* Start a block defining an enum type. */
843 type_code
= TYPE_CODE_ENUM
;
844 goto structured_common
;
846 case stBlock
: /* Either a lexical block, or some type. */
847 if (sh
->sc
!= scInfo
&& !SC_IS_COMMON (sh
->sc
))
848 goto case_stBlock_code
; /* Lexical block */
850 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
852 /* Common code for handling struct, union, enum, and/or as-yet-
853 unknown-type blocks of info about structured data. `type_code'
854 has been set to the proper TYPE_CODE, if we know it. */
856 found_ecoff_debugging_info
= 1;
858 top_stack
->blocktype
= stBlock
;
860 /* First count the number of fields and the highest value. */
863 for (ext_tsym
= ext_sh
+ external_sym_size
;
865 ext_tsym
+= external_sym_size
)
869 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
874 /* C++ encodes class types as structures where there the
875 methods are encoded as stProc. The scope of stProc
876 symbols also ends with stEnd, thus creating a risk of
877 taking the wrong stEnd symbol record as the end of
878 the current struct, which would cause GDB to undercount
879 the real number of fields in this struct. To make sure
880 we really reached the right stEnd symbol record, we
881 check the associated name, and match it against the
882 struct name. Since method names are mangled while
883 the class name is not, there is no risk of having a
884 method whose name is identical to the class name
885 (in particular constructor method names are different
886 from the class name). There is therefore no risk that
887 this check stops the count on the StEnd of a method.
889 Also, assume that we're really at the end when tsym.iss
891 if (tsym
.iss
== issNull
892 || strcmp (debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
,
898 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
900 /* If the type of the member is Nil (or Void),
901 without qualifiers, assume the tag is an
903 Alpha cc -migrate enums are recognized by a zero
904 index and a zero symbol value.
905 DU 4.0 cc enums are recognized by a member type of
906 btEnum without qualifiers and a zero symbol value. */
907 if (tsym
.index
== indexNil
908 || (tsym
.index
== 0 && sh
->value
== 0))
909 type_code
= TYPE_CODE_ENUM
;
912 (*debug_swap
->swap_tir_in
) (bigend
,
913 &ax
[tsym
.index
].a_ti
,
915 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
916 || (tir
.bt
== btEnum
&& sh
->value
== 0))
918 type_code
= TYPE_CODE_ENUM
;
922 if (tsym
.value
> max_value
)
923 max_value
= tsym
.value
;
932 /* This is a no-op; is it trying to tell us something
933 we should be checking? */
934 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED */
938 /* This is something like a struct within a
939 struct. Skip over the fields of the inner
940 struct. The -1 is because the for loop will
941 increment ext_tsym. */
942 ext_tsym
= ((char *) debug_info
->external_sym
943 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
944 * external_sym_size
));
950 /* mips cc puts out a typedef for struct x if it is not yet
951 defined when it encounters
952 struct y { struct x *xp; };
957 /* Irix5 cc puts out a stIndirect for struct x if it is not
958 yet defined when it encounters
959 struct y { struct x *xp; };
964 complaint (_("declaration block contains "
965 "unhandled symbol type %d"),
971 /* In an stBlock, there is no way to distinguish structs,
972 unions, and enums at this point. This is a bug in the
973 original design (that has been fixed with the recent
974 addition of the stStruct, stUnion, and stEnum symbol
975 types.) The way you can tell is if/when you see a variable
976 or field of that type. In that case the variable's type
977 (in the AUX table) says if the type is struct, union, or
978 enum, and points back to the stBlock here. So you can
979 patch the tag kind up later - but only if there actually is
980 a variable or field of that type.
982 So until we know for sure, we will guess at this point.
984 If the first member has index==indexNil or a void type,
985 assume we have an enumeration.
986 Otherwise, if there is more than one member, and all
987 the members have offset 0, assume we have a union.
988 Otherwise, assume we have a struct.
990 The heuristic could guess wrong in the case of of an
991 enumeration with no members or a union with one (or zero)
992 members, or when all except the last field of a struct have
993 width zero. These are uncommon and/or illegal situations,
994 and in any case guessing wrong probably doesn't matter
997 But if we later do find out we were wrong, we fixup the tag
998 kind. Members of an enumeration must be handled
999 differently from struct/union fields, and that is harder to
1000 patch up, but luckily we shouldn't need to. (If there are
1001 any enumeration members, we can tell for sure it's an enum
1004 if (type_code
== TYPE_CODE_UNDEF
)
1006 if (nfields
> 1 && max_value
== 0)
1007 type_code
= TYPE_CODE_UNION
;
1009 type_code
= TYPE_CODE_STRUCT
;
1012 /* Create a new type or use the pending type. */
1013 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1014 if (pend
== (struct mdebug_pending
*) NULL
)
1016 t
= new_type (NULL
);
1017 add_pending (cur_fdr
, ext_sh
, t
);
1022 /* Do not set the tag name if it is a compiler generated tag name
1023 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1024 Alpha cc puts out an sh->iss of zero for those. */
1025 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1026 TYPE_NAME (t
) = NULL
;
1028 TYPE_NAME (t
) = obconcat (&mdebugread_objfile
->objfile_obstack
,
1029 name
, (char *) NULL
);
1031 TYPE_CODE (t
) = type_code
;
1032 TYPE_LENGTH (t
) = sh
->value
;
1033 TYPE_NFIELDS (t
) = nfields
;
1034 TYPE_FIELDS (t
) = f
= ((struct field
*)
1036 nfields
* sizeof (struct field
)));
1038 if (type_code
== TYPE_CODE_ENUM
)
1040 int unsigned_enum
= 1;
1042 /* This is a non-empty enum. */
1044 /* DEC c89 has the number of enumerators in the sh.value field,
1045 not the type length, so we have to compensate for that
1046 incompatibility quirk.
1047 This might do the wrong thing for an enum with one or two
1048 enumerators and gcc -gcoff -fshort-enums, but these cases
1049 are hopefully rare enough.
1050 Alpha cc -migrate has a sh.value field of zero, we adjust
1052 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1053 || TYPE_LENGTH (t
) == 0)
1054 TYPE_LENGTH (t
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
1055 for (ext_tsym
= ext_sh
+ external_sym_size
;
1057 ext_tsym
+= external_sym_size
)
1060 struct symbol
*enum_sym
;
1062 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1064 if (tsym
.st
!= stMember
)
1067 SET_FIELD_ENUMVAL (*f
, tsym
.value
);
1068 FIELD_TYPE (*f
) = t
;
1069 FIELD_NAME (*f
) = debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1070 FIELD_BITSIZE (*f
) = 0;
1072 enum_sym
= allocate_symbol (mdebugread_objfile
);
1073 SYMBOL_SET_LINKAGE_NAME
1075 (char *) obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1076 f
->name
, strlen (f
->name
)));
1077 SYMBOL_ACLASS_INDEX (enum_sym
) = LOC_CONST
;
1078 SYMBOL_TYPE (enum_sym
) = t
;
1079 SYMBOL_DOMAIN (enum_sym
) = VAR_DOMAIN
;
1080 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1081 if (SYMBOL_VALUE (enum_sym
) < 0)
1083 add_symbol (enum_sym
, top_stack
->cur_st
, top_stack
->cur_block
);
1085 /* Skip the stMembers that we've handled. */
1090 TYPE_UNSIGNED (t
) = 1;
1092 /* Make this the current type. */
1093 top_stack
->cur_type
= t
;
1094 top_stack
->cur_field
= 0;
1096 /* Do not create a symbol for alpha cc unnamed structs. */
1100 /* gcc puts out an empty struct for an opaque struct definitions,
1101 do not create a symbol for it either. */
1102 if (TYPE_NFIELDS (t
) == 0)
1108 s
= new_symbol (name
);
1109 SYMBOL_DOMAIN (s
) = STRUCT_DOMAIN
;
1110 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1111 SYMBOL_VALUE (s
) = 0;
1112 SYMBOL_TYPE (s
) = t
;
1113 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1116 /* End of local variables shared by struct, union, enum, and
1117 block (as yet unknown struct/union/enum) processing. */
1121 found_ecoff_debugging_info
= 1;
1122 /* Beginnning of (code) block. Value of symbol
1123 is the displacement from procedure start. */
1124 push_parse_stack ();
1126 /* Do not start a new block if this is the outermost block of a
1127 procedure. This allows the LOC_BLOCK symbol to point to the
1128 block with the local variables, so funcname::var works. */
1129 if (top_stack
->blocktype
== stProc
1130 || top_stack
->blocktype
== stStaticProc
)
1132 top_stack
->blocktype
= stNil
;
1136 top_stack
->blocktype
= stBlock
;
1137 b
= new_block (NON_FUNCTION_BLOCK
, psymtab_language
);
1138 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1139 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1140 top_stack
->cur_block
= b
;
1141 add_block (b
, top_stack
->cur_st
);
1144 case stEnd
: /* end (of anything) */
1145 if (sh
->sc
== scInfo
|| SC_IS_COMMON (sh
->sc
))
1147 /* Finished with type */
1148 top_stack
->cur_type
= 0;
1150 else if (sh
->sc
== scText
&&
1151 (top_stack
->blocktype
== stProc
||
1152 top_stack
->blocktype
== stStaticProc
))
1154 /* Finished with procedure */
1155 const struct blockvector
*bv
1156 = SYMTAB_BLOCKVECTOR (top_stack
->cur_st
);
1157 struct mdebug_extra_func_info
*e
;
1158 struct block
*b
= top_stack
->cur_block
;
1159 struct type
*ftype
= top_stack
->cur_type
;
1162 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1164 /* Make up special symbol to contain procedure specific info. */
1165 s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
1166 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
1167 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
1168 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->builtin_void
;
1169 e
= OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
1170 mdebug_extra_func_info
);
1171 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
1172 e
->numargs
= top_stack
->numargs
;
1173 e
->pdr
.framereg
= -1;
1174 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1176 /* f77 emits proc-level with address bounds==[0,0],
1177 So look for such child blocks, and patch them. */
1178 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1180 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1182 if (BLOCK_SUPERBLOCK (b_bad
) == b
1183 && BLOCK_START (b_bad
) == top_stack
->procadr
1184 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1186 BLOCK_START (b_bad
) = BLOCK_START (b
);
1187 BLOCK_END (b_bad
) = BLOCK_END (b
);
1191 if (TYPE_NFIELDS (ftype
) <= 0)
1193 /* No parameter type information is recorded with the function's
1194 type. Set that from the type of the parameter symbols. */
1195 int nparams
= top_stack
->numargs
;
1201 struct block_iterator iter
;
1203 TYPE_NFIELDS (ftype
) = nparams
;
1204 TYPE_FIELDS (ftype
) = (struct field
*)
1205 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1208 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1210 if (iparams
== nparams
)
1213 if (SYMBOL_IS_ARGUMENT (sym
))
1215 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1216 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
1223 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1225 /* End of (code) block. The value of the symbol is the
1226 displacement from the procedure`s start address of the
1227 end of this block. */
1228 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1230 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1232 /* End of outermost block. Pop parse stack and ignore. The
1233 following stEnd of stProc will take care of the block. */
1236 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1238 /* End of file. Pop parse stack and ignore. Higher
1239 level code deals with this. */
1243 complaint (_("stEnd with storage class %d not handled"), sh
->sc
);
1245 pop_parse_stack (); /* Restore previous lexical context. */
1248 case stMember
: /* member of struct or union */
1249 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1250 FIELD_NAME (*f
) = name
;
1251 SET_FIELD_BITPOS (*f
, sh
->value
);
1253 FIELD_TYPE (*f
) = parse_type (cur_fd
, ax
, sh
->index
,
1254 &bitsize
, bigend
, name
);
1255 FIELD_BITSIZE (*f
) = bitsize
;
1258 case stIndirect
: /* forward declaration on Irix5 */
1259 /* Forward declarations from Irix5 cc are handled by cross_ref,
1263 case stTypedef
: /* type definition */
1264 found_ecoff_debugging_info
= 1;
1266 /* Typedefs for forward declarations and opaque structs from alpha cc
1267 are handled by cross_ref, skip them. */
1271 /* Parse the type or use the pending type. */
1272 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1273 if (pend
== (struct mdebug_pending
*) NULL
)
1275 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *) NULL
, bigend
, name
);
1276 add_pending (cur_fdr
, ext_sh
, t
);
1281 /* Mips cc puts out a typedef with the name of the struct for forward
1282 declarations. These should not go into the symbol table and
1283 TYPE_NAME should not be set for them.
1284 They can't be distinguished from an intentional typedef to
1285 the same name however:
1287 struct x { int ix; int jx; };
1291 struct xx {int ixx; int jxx; };
1292 generates a cross referencing stTypedef for x and xx.
1293 The user visible effect of this is that the type of a pointer
1294 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1295 The problem is fixed with alpha cc and Irix5 cc. */
1297 /* However if the typedef cross references to an opaque aggregate, it
1298 is safe to omit it from the symbol table. */
1300 if (has_opaque_xref (cur_fdr
, sh
))
1302 s
= new_symbol (name
);
1303 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
1304 SYMBOL_ACLASS_INDEX (s
) = LOC_TYPEDEF
;
1305 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1306 SYMBOL_TYPE (s
) = t
;
1307 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
1309 /* Incomplete definitions of structs should not get a name. */
1310 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1311 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1312 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1313 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1315 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1316 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1318 /* If we are giving a name to a type such as "pointer to
1319 foo" or "function returning foo", we better not set
1320 the TYPE_NAME. If the program contains "typedef char
1321 *caddr_t;", we don't want all variables of type char
1322 * to print as caddr_t. This is not just a
1323 consequence of GDB's type management; CC and GCC (at
1324 least through version 2.4) both output variables of
1325 either type char * or caddr_t with the type
1326 refering to the stTypedef symbol for caddr_t. If a future
1327 compiler cleans this up it GDB is not ready for it
1328 yet, but if it becomes ready we somehow need to
1329 disable this check (without breaking the PCC/GCC2.4
1334 Fortunately, this check seems not to be necessary
1335 for anything except pointers or functions. */
1338 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_LINKAGE_NAME (s
);
1342 case stFile
: /* file name */
1343 push_parse_stack ();
1344 top_stack
->blocktype
= sh
->st
;
1347 /* I`ve never seen these for C */
1349 break; /* register relocation */
1351 break; /* forwarding address */
1353 break; /* constant */
1355 complaint (_("unknown symbol type 0x%x"), sh
->st
);
1364 static const struct objfile_data
*basic_type_data
;
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
1371 = (struct type
**) objfile_data (objfile
, basic_type_data
);
1379 map_bt
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1380 btMax
, struct type
*);
1381 set_objfile_data (objfile
, basic_type_data
, map_bt
);
1390 tp
= objfile_type (objfile
)->builtin_void
;
1394 tp
= init_pointer_type (objfile
, 32, "adr_32",
1395 objfile_type (objfile
)->builtin_void
);
1399 tp
= init_integer_type (objfile
, 8, 0, "char");
1400 TYPE_NOSIGN (tp
) = 1;
1404 tp
= init_integer_type (objfile
, 8, 1, "unsigned char");
1408 tp
= init_integer_type (objfile
, 16, 0, "short");
1412 tp
= init_integer_type (objfile
, 16, 1, "unsigned short");
1416 tp
= init_integer_type (objfile
, 32, 0, "int");
1420 tp
= init_integer_type (objfile
, 32, 1, "unsigned int");
1424 tp
= init_integer_type (objfile
, 32, 0, "long");
1428 tp
= init_integer_type (objfile
, 32, 1, "unsigned long");
1432 tp
= init_float_type (objfile
, gdbarch_float_bit (gdbarch
),
1433 "float", gdbarch_float_format (gdbarch
));
1437 tp
= init_float_type (objfile
, gdbarch_double_bit (gdbarch
),
1438 "double", gdbarch_double_format (gdbarch
));
1442 tp
= init_complex_type (objfile
, "complex",
1443 basic_type (btFloat
, objfile
));
1447 tp
= init_complex_type (objfile
, "double complex",
1448 basic_type (btFloat
, objfile
));
1452 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1453 good? Would we be better off with TYPE_CODE_ERROR? Should
1454 TYPE_CODE_ERROR print things in hex if it knows the size? */
1455 tp
= init_integer_type (objfile
, gdbarch_int_bit (gdbarch
), 0,
1460 tp
= init_type (objfile
, TYPE_CODE_ERROR
,
1461 gdbarch_double_bit (gdbarch
), "floating decimal");
1465 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1467 tp
= init_type (objfile
, TYPE_CODE_STRING
, TARGET_CHAR_BIT
, "string");
1471 tp
= objfile_type (objfile
)->builtin_void
;
1475 tp
= init_integer_type (objfile
, 64, 0, "long");
1479 tp
= init_integer_type (objfile
, 64, 1, "unsigned long");
1483 tp
= init_integer_type (objfile
, 64, 0, "long long");
1487 tp
= init_integer_type (objfile
, 64, 1, "unsigned long long");
1491 tp
= init_pointer_type (objfile
, 64, "adr_64",
1492 objfile_type (objfile
)->builtin_void
);
1496 tp
= init_integer_type (objfile
, 64, 0, "int");
1500 tp
= init_integer_type (objfile
, 64, 1, "unsigned int");
1512 /* Parse the type information provided in the raw AX entries for
1513 the symbol SH. Return the bitfield size in BS, in case.
1514 We must byte-swap the AX entries before we use them; BIGEND says whether
1515 they are big-endian or little-endian (from fh->fBigendian). */
1517 static struct type
*
1518 parse_type (int fd
, union aux_ext
*ax
, unsigned int aux_index
, int *bs
,
1519 int bigend
, const char *sym_name
)
1522 struct type
*tp
= 0;
1523 enum type_code type_code
= TYPE_CODE_UNDEF
;
1525 /* Handle undefined types, they have indexNil. */
1526 if (aux_index
== indexNil
)
1527 return basic_type (btInt
, mdebugread_objfile
);
1529 /* Handle corrupt aux indices. */
1530 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1532 index_complaint (sym_name
);
1533 return basic_type (btInt
, mdebugread_objfile
);
1537 /* Use aux as a type information record, map its basic type. */
1538 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1539 tp
= basic_type (t
->bt
, mdebugread_objfile
);
1542 /* Cannot use builtin types -- build our own. */
1546 type_code
= TYPE_CODE_STRUCT
;
1549 type_code
= TYPE_CODE_UNION
;
1552 type_code
= TYPE_CODE_ENUM
;
1555 type_code
= TYPE_CODE_RANGE
;
1558 type_code
= TYPE_CODE_SET
;
1561 /* alpha cc -migrate uses this for typedefs. The true type will
1562 be obtained by crossreferencing below. */
1563 type_code
= TYPE_CODE_ERROR
;
1566 /* alpha cc uses this for typedefs. The true type will be
1567 obtained by crossreferencing below. */
1568 type_code
= TYPE_CODE_ERROR
;
1571 basic_type_complaint (t
->bt
, sym_name
);
1572 return basic_type (btInt
, mdebugread_objfile
);
1576 /* Move on to next aux. */
1581 int width
= AUX_GET_WIDTH (bigend
, ax
);
1583 /* Inhibit core dumps if TIR is corrupted. */
1584 if (bs
== (int *) NULL
)
1586 /* Alpha cc -migrate encodes char and unsigned char types
1587 as short and unsigned short types with a field width of 8.
1588 Enum types also have a field width which we ignore for now. */
1589 if (t
->bt
== btShort
&& width
== 8)
1590 tp
= basic_type (btChar
, mdebugread_objfile
);
1591 else if (t
->bt
== btUShort
&& width
== 8)
1592 tp
= basic_type (btUChar
, mdebugread_objfile
);
1593 else if (t
->bt
== btEnum
)
1596 complaint (_("can't handle TIR fBitfield for %s"),
1604 /* A btIndirect entry cross references to an aux entry containing
1606 if (t
->bt
== btIndirect
)
1613 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1615 if (rn
->rfd
== 0xfff)
1617 rf
= AUX_GET_ISYM (bigend
, ax
);
1625 complaint (_("unable to cross ref btIndirect for %s"), sym_name
);
1626 return basic_type (btInt
, mdebugread_objfile
);
1628 xref_fh
= get_rfd (fd
, rf
);
1629 xref_fd
= xref_fh
- debug_info
->fdr
;
1630 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1631 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1634 /* All these types really point to some (common) MIPS type
1635 definition, and only the type-qualifiers fully identify
1636 them. We'll make the same effort at sharing. */
1637 if (t
->bt
== btStruct
||
1641 /* btSet (I think) implies that the name is a tag name, not a typedef
1642 name. This apparently is a MIPS extension for C sets. */
1647 /* Try to cross reference this type, build new type on failure. */
1648 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1649 if (tp
== (struct type
*) NULL
)
1650 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1652 /* DEC c89 produces cross references to qualified aggregate types,
1653 dereference them. */
1654 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1655 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1656 tp
= TYPE_TARGET_TYPE (tp
);
1658 /* Make sure that TYPE_CODE(tp) has an expected type code.
1659 Any type may be returned from cross_ref if file indirect entries
1661 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1662 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1663 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1665 unexpected_type_code_complaint (sym_name
);
1669 /* Usually, TYPE_CODE(tp) is already type_code. The main
1670 exception is if we guessed wrong re struct/union/enum.
1671 But for struct vs. union a wrong guess is harmless, so
1672 don't complain(). */
1673 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1674 && type_code
!= TYPE_CODE_ENUM
)
1675 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1676 && type_code
== TYPE_CODE_ENUM
))
1678 bad_tag_guess_complaint (sym_name
);
1681 if (TYPE_CODE (tp
) != type_code
)
1683 TYPE_CODE (tp
) = type_code
;
1686 /* Do not set the tag name if it is a compiler generated tag name
1687 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1688 if (name
[0] == '.' || name
[0] == '\0')
1689 TYPE_NAME (tp
) = NULL
;
1690 else if (TYPE_NAME (tp
) == NULL
1691 || strcmp (TYPE_NAME (tp
), name
) != 0)
1694 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1695 name
, strlen (name
)));
1699 /* All these types really point to some (common) MIPS type
1700 definition, and only the type-qualifiers fully identify
1701 them. We'll make the same effort at sharing.
1702 FIXME: We are not doing any guessing on range types. */
1703 if (t
->bt
== btRange
)
1707 /* Try to cross reference this type, build new type on failure. */
1708 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1709 if (tp
== (struct type
*) NULL
)
1710 tp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
1712 /* Make sure that TYPE_CODE(tp) has an expected type code.
1713 Any type may be returned from cross_ref if file indirect entries
1715 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1717 unexpected_type_code_complaint (sym_name
);
1721 /* Usually, TYPE_CODE(tp) is already type_code. The main
1722 exception is if we guessed wrong re struct/union/enum. */
1723 if (TYPE_CODE (tp
) != type_code
)
1725 bad_tag_guess_complaint (sym_name
);
1726 TYPE_CODE (tp
) = type_code
;
1728 if (TYPE_NAME (tp
) == NULL
1729 || strcmp (TYPE_NAME (tp
), name
) != 0)
1732 obstack_copy0 (&mdebugread_objfile
->objfile_obstack
,
1733 name
, strlen (name
)));
1736 if (t
->bt
== btTypedef
)
1740 /* Try to cross reference this type, it should succeed. */
1741 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1742 if (tp
== (struct type
*) NULL
)
1744 complaint (_("unable to cross ref btTypedef for %s"), sym_name
);
1745 tp
= basic_type (btInt
, mdebugread_objfile
);
1749 /* Deal with range types. */
1750 if (t
->bt
== btRange
)
1752 TYPE_NFIELDS (tp
) = 0;
1753 TYPE_RANGE_DATA (tp
) = ((struct range_bounds
*)
1754 TYPE_ZALLOC (tp
, sizeof (struct range_bounds
)));
1755 TYPE_LOW_BOUND (tp
) = AUX_GET_DNLOW (bigend
, ax
);
1757 TYPE_HIGH_BOUND (tp
) = AUX_GET_DNHIGH (bigend
, ax
);
1761 /* Parse all the type qualifiers now. If there are more
1762 than 6 the game will continue in the next aux. */
1766 #define PARSE_TQ(tq) \
1767 if (t->tq != tqNil) \
1768 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1780 /* mips cc 2.x and gcc never put out continued aux entries. */
1784 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1788 /* Complain for illegal continuations due to corrupt aux entries. */
1790 complaint (_("illegal TIR continued for %s"), sym_name
);
1795 /* Make up a complex type from a basic one. Type is passed by
1796 reference in TPP and side-effected as necessary. The type
1797 qualifier TQ says how to handle the aux symbols at AX for
1798 the symbol SX we are currently analyzing. BIGEND says whether
1799 aux symbols are big-endian or little-endian.
1800 Returns the number of aux symbols we parsed. */
1803 upgrade_type (int fd
, struct type
**tpp
, int tq
, union aux_ext
*ax
, int bigend
,
1804 const char *sym_name
)
1809 /* Used in array processing. */
1820 t
= lookup_pointer_type (*tpp
);
1825 t
= lookup_function_type (*tpp
);
1832 /* Determine and record the domain type (type of index). */
1833 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1839 rf
= AUX_GET_ISYM (bigend
, ax
);
1842 fh
= get_rfd (fd
, rf
);
1844 indx
= parse_type (fh
- debug_info
->fdr
,
1845 debug_info
->external_aux
+ fh
->iauxBase
,
1846 id
, (int *) NULL
, bigend
, sym_name
);
1848 /* The bounds type should be an integer type, but might be anything
1849 else due to corrupt aux entries. */
1850 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1852 complaint (_("illegal array index type for %s, assuming int"),
1854 indx
= objfile_type (mdebugread_objfile
)->builtin_int
;
1857 /* Get the bounds, and create the array type. */
1859 lower
= AUX_GET_DNLOW (bigend
, ax
);
1861 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1863 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1865 range
= create_static_range_type ((struct type
*) NULL
, indx
,
1868 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1870 /* We used to fill in the supplied array element bitsize
1871 here if the TYPE_LENGTH of the target type was zero.
1872 This happens for a `pointer to an array of anonymous structs',
1873 but in this case the array element bitsize is also zero,
1874 so nothing is gained.
1875 And we used to check the TYPE_LENGTH of the target type against
1876 the supplied array element bitsize.
1877 gcc causes a mismatch for `pointer to array of object',
1878 since the sdb directives it uses do not have a way of
1879 specifying the bitsize, but it does no harm (the
1880 TYPE_LENGTH should be correct) and we should be able to
1881 ignore the erroneous bitsize from the auxiliary entry safely.
1882 dbx seems to ignore it too. */
1884 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1885 if (TYPE_LENGTH (*tpp
) == 0)
1886 TYPE_TARGET_STUB (t
) = 1;
1892 /* Volatile -- currently ignored */
1896 /* Const -- currently ignored */
1900 complaint (_("unknown type qualifier 0x%x"), tq
);
1906 /* Parse a procedure descriptor record PR. Note that the procedure is
1907 parsed _after_ the local symbols, now we just insert the extra
1908 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1909 already been placed in the procedure's main block. Note also that
1910 images that have been partially stripped (ld -x) have been deprived
1911 of local symbols, and we have to cope with them here. FIRST_OFF is
1912 the offset of the first procedure for this FDR; we adjust the
1913 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1914 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1915 in question, or NULL to use top_stack->cur_block. */
1918 parse_procedure (PDR
*pr
, struct compunit_symtab
*search_symtab
,
1919 struct partial_symtab
*pst
)
1921 struct symbol
*s
, *i
;
1922 const struct block
*b
;
1925 /* Simple rule to find files linked "-x". */
1926 if (cur_fdr
->rss
== -1)
1930 /* Static procedure at address pr->adr. Sigh. */
1931 /* FIXME-32x64. assuming pr->adr fits in long. */
1932 complaint (_("can't handle PDR for static proc at 0x%lx"),
1933 (unsigned long) pr
->adr
);
1941 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1942 ((char *) debug_info
->external_ext
1944 * debug_swap
->external_ext_size
)),
1946 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1954 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1955 ((char *) debug_info
->external_sym
1956 + ((cur_fdr
->isymBase
+ pr
->isym
)
1957 * debug_swap
->external_sym_size
)),
1959 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1962 if (search_symtab
!= NULL
)
1965 /* This loses both in the case mentioned (want a static, find a global),
1966 but also if we are looking up a non-mangled name which happens to
1967 match the name of a mangled function. */
1968 /* We have to save the cur_fdr across the call to lookup_symbol.
1969 If the pdr is for a static function and if a global function with
1970 the same name exists, lookup_symbol will eventually read in the symtab
1971 for the global function and clobber cur_fdr. */
1972 FDR
*save_cur_fdr
= cur_fdr
;
1974 s
= lookup_symbol (sh_name
, NULL
, VAR_DOMAIN
, 0);
1975 cur_fdr
= save_cur_fdr
;
1979 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab
),
1986 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1987 VAR_DOMAIN
, LOC_BLOCK
);
1991 b
= SYMBOL_BLOCK_VALUE (s
);
1995 complaint (_("PDR for %s, but no symbol"), sh_name
);
1999 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2000 s
= new_symbol (sh_name
);
2001 SYMBOL_DOMAIN (s
) = VAR_DOMAIN
;
2002 SYMBOL_CLASS (s
) = LOC_BLOCK
;
2003 /* Donno its type, hope int is ok. */
2005 = lookup_function_type (objfile_type (pst
->objfile
)->builtin_int
);
2006 add_symbol (s
, top_stack
->cur_st
, top_stack
->cur_block
);
2007 /* Won't have symbols for this one. */
2009 SYMBOL_BLOCK_VALUE (s
) = b
;
2010 BLOCK_FUNCTION (b
) = s
;
2011 BLOCK_START (b
) = pr
->adr
;
2012 /* BOUND used to be the end of procedure's text, but the
2013 argument is no longer passed in. */
2014 BLOCK_END (b
) = bound
;
2015 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
2016 add_block (b
, top_stack
->cur_st
);
2020 i
= mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME
, b
, LABEL_DOMAIN
, LOC_CONST
);
2024 struct mdebug_extra_func_info
*e
;
2026 e
= (struct mdebug_extra_func_info
*) SYMBOL_VALUE_BYTES (i
);
2029 /* GDB expects the absolute function start address for the
2030 procedure descriptor in e->pdr.adr.
2031 As the address in the procedure descriptor is usually relative,
2032 we would have to relocate e->pdr.adr with cur_fdr->adr and
2033 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2034 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2035 in shared libraries on some systems, and on other systems
2036 e->pdr.adr is sometimes offset by a bogus value.
2037 To work around these problems, we replace e->pdr.adr with
2038 the start address of the function. */
2039 e
->pdr
.adr
= BLOCK_START (b
);
2042 /* It would be reasonable that functions that have been compiled
2043 without debugging info have a btNil type for their return value,
2044 and functions that are void and are compiled with debugging info
2046 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2047 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2049 The glevel field in cur_fdr could be used to determine the presence
2050 of debugging info, but GCC doesn't always pass the -g switch settings
2051 to the assembler and GAS doesn't set the glevel field from the -g switch
2053 To work around these problems, the return value type of a TYPE_CODE_VOID
2054 function is adjusted accordingly if no debugging info was found in the
2055 compilation unit. */
2057 if (processing_gcc_compilation
== 0
2058 && found_ecoff_debugging_info
== 0
2059 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2060 SYMBOL_TYPE (s
) = objfile_type (mdebugread_objfile
)->nodebug_text_symbol
;
2063 /* Parse the external symbol ES. Just call parse_symbol() after
2064 making sure we know where the aux are for it.
2065 BIGEND says whether aux entries are big-endian or little-endian.
2067 This routine clobbers top_stack->cur_block and ->cur_st. */
2069 static void parse_external (EXTR
*, int, struct section_offsets
*,
2073 parse_external (EXTR
*es
, int bigend
, struct section_offsets
*section_offsets
,
2074 struct objfile
*objfile
)
2078 if (es
->ifd
!= ifdNil
)
2081 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2082 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2086 cur_fdr
= debug_info
->fdr
;
2090 /* Reading .o files */
2091 if (SC_IS_UNDEF (es
->asym
.sc
) || es
->asym
.sc
== scNil
)
2094 switch (es
->asym
.st
)
2097 /* These are generated for static symbols in .o files,
2118 /* FIXME: Turn this into a complaint? */
2120 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2121 what
, debug_info
->ssext
+ es
->asym
.iss
,
2122 fdr_name (cur_fdr
));
2126 switch (es
->asym
.st
)
2130 /* There is no need to parse the external procedure symbols.
2131 If they are from objects compiled without -g, their index will
2132 be indexNil, and the symbol definition from the minimal symbol
2133 is preferrable (yielding a function returning int instead of int).
2134 If the index points to a local procedure symbol, the local
2135 symbol already provides the correct type.
2136 Note that the index of the external procedure symbol points
2137 to the local procedure symbol in the local symbol table, and
2138 _not_ to the auxiliary symbol info. */
2142 /* Global common symbols are resolved by the runtime loader,
2144 if (SC_IS_COMMON (es
->asym
.sc
))
2147 /* Note that the case of a symbol with indexNil must be handled
2148 anyways by parse_symbol(). */
2149 parse_symbol (&es
->asym
, ax
, (char *) NULL
,
2150 bigend
, section_offsets
, objfile
);
2157 /* Parse the line number info for file descriptor FH into
2158 GDB's linetable LT. MIPS' encoding requires a little bit
2159 of magic to get things out. Note also that MIPS' line
2160 numbers can go back and forth, apparently we can live
2161 with that and do not need to reorder our linetables. */
2163 static void parse_lines (FDR
*, PDR
*, struct linetable
*, int,
2164 struct partial_symtab
*, CORE_ADDR
);
2167 parse_lines (FDR
*fh
, PDR
*pr
, struct linetable
*lt
, int maxlines
,
2168 struct partial_symtab
*pst
, CORE_ADDR lowest_pdr_addr
)
2170 unsigned char *base
;
2172 int delta
, count
, lineno
= 0;
2174 if (fh
->cbLine
== 0)
2177 /* Scan by procedure descriptors. */
2179 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2183 unsigned char *halt
;
2185 /* No code for this one. */
2186 if (pr
->iline
== ilineNil
||
2187 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2190 /* Determine start and end address of compressed line bytes for
2192 base
= debug_info
->line
+ fh
->cbLineOffset
;
2193 if (j
!= (fh
->cpd
- 1))
2194 halt
= base
+ pr
[1].cbLineOffset
;
2196 halt
= base
+ fh
->cbLine
;
2197 base
+= pr
->cbLineOffset
;
2199 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2201 l
= adr
>> 2; /* in words */
2202 for (lineno
= pr
->lnLow
; base
< halt
;)
2204 count
= *base
& 0x0f;
2205 delta
= *base
++ >> 4;
2210 delta
= (base
[0] << 8) | base
[1];
2211 if (delta
>= 0x8000)
2215 lineno
+= delta
; /* first delta is 0 */
2217 /* Complain if the line table overflows. Could happen
2218 with corrupt binaries. */
2219 if (lt
->nitems
>= maxlines
)
2221 complaint (_("guessed size of linetable for %s incorrectly"),
2225 k
= add_line (lt
, lineno
, l
, k
);
2232 function_outside_compilation_unit_complaint (const char *arg1
)
2234 complaint (_("function `%s' appears to be defined "
2235 "outside of all compilation units"),
2239 /* Use the STORAGE_CLASS to compute which section the given symbol
2240 belongs to, and then records this new minimal symbol. */
2243 record_minimal_symbol (minimal_symbol_reader
&reader
,
2244 const char *name
, const CORE_ADDR address
,
2245 enum minimal_symbol_type ms_type
, int storage_class
,
2246 struct objfile
*objfile
)
2250 switch (storage_class
)
2253 section
= SECT_OFF_TEXT (objfile
);
2256 section
= SECT_OFF_DATA (objfile
);
2259 section
= SECT_OFF_BSS (objfile
);
2262 section
= get_section_index (objfile
, ".sdata");
2265 section
= get_section_index (objfile
, ".sbss");
2268 section
= get_section_index (objfile
, ".rdata");
2271 section
= get_section_index (objfile
, ".init");
2274 section
= get_section_index (objfile
, ".xdata");
2277 section
= get_section_index (objfile
, ".pdata");
2280 section
= get_section_index (objfile
, ".fini");
2283 section
= get_section_index (objfile
, ".rconst");
2287 section
= get_section_index (objfile
, ".tlsdata");
2292 section
= get_section_index (objfile
, ".tlsbss");
2296 /* This kind of symbol is not associated to a section. */
2300 reader
.record_with_info (name
, address
, ms_type
, section
);
2303 /* Master parsing procedure for first-pass reading of file symbols
2304 into a partial_symtab. */
2307 parse_partial_symbols (minimal_symbol_reader
&reader
,
2308 struct objfile
*objfile
)
2310 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2311 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2312 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2313 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2314 void (*const swap_ext_in
) (bfd
*, void *, EXTR
*) = debug_swap
->swap_ext_in
;
2315 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
2316 void (*const swap_rfd_in
) (bfd
*, void *, RFDT
*) = debug_swap
->swap_rfd_in
;
2318 HDRR
*hdr
= &debug_info
->symbolic_header
;
2319 /* Running pointers */
2326 struct partial_symtab
*pst
;
2327 int textlow_not_set
= 1;
2329 /* List of current psymtab's include files. */
2330 const char **psymtab_include_list
;
2331 int includes_allocated
;
2334 struct pst_map
*fdr_to_pst
;
2335 /* Index within current psymtab dependency list. */
2336 struct partial_symtab
**dependency_list
;
2337 int dependencies_used
, dependencies_allocated
;
2339 enum language prev_language
;
2340 asection
*text_sect
;
2341 int relocatable
= 0;
2343 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2344 the shared libraries are prelinked at a high memory address.
2345 We have to adjust the start address of the object file for this case,
2346 by setting it to the start address of the first procedure in the file.
2347 But we should do no adjustments if we are debugging a .o file, where
2348 the text section (and fh->adr) really starts at zero. */
2349 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2350 if (text_sect
!= NULL
2351 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2354 extern_tab
= XOBNEWVEC (&objfile
->objfile_obstack
, EXTR
, hdr
->iextMax
);
2356 includes_allocated
= 30;
2358 psymtab_include_list
= (const char **) alloca (includes_allocated
*
2359 sizeof (const char *));
2360 next_symbol_text_func
= mdebug_next_symbol_text
;
2362 dependencies_allocated
= 30;
2363 dependencies_used
= 0;
2365 (struct partial_symtab
**) alloca (dependencies_allocated
*
2366 sizeof (struct partial_symtab
*));
2368 set_last_source_file (NULL
);
2373 * Only parse the Local and External symbols, and the Relative FDR.
2374 * Fixup enough of the loader symtab to be able to use it.
2375 * Allocate space only for the file's portions we need to
2380 max_glevel
= MIN_GLEVEL
;
2382 /* Allocate the map FDR -> PST.
2383 Minor hack: -O3 images might claim some global data belongs
2384 to FDR -1. We`ll go along with that. */
2385 gdb::def_vector
<struct pst_map
> fdr_to_pst_holder (hdr
->ifdMax
+ 1);
2386 fdr_to_pst
= fdr_to_pst_holder
.data ();
2389 struct partial_symtab
*pst
= new_psymtab ("", objfile
);
2391 fdr_to_pst
[-1].pst
= pst
;
2395 /* Allocate the global pending list. */
2396 pending_list
= XOBNEWVEC (&objfile
->objfile_obstack
, mdebug_pending
*,
2398 memset (pending_list
, 0,
2399 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2401 /* Pass 0 over external syms: swap them in. */
2402 gdb::def_vector
<EXTR
> ext_block (hdr
->iextMax
);
2404 ext_out
= (char *) debug_info
->external_ext
;
2405 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2406 ext_in
= ext_block
.data ();
2407 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2408 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2410 /* Pass 1 over external syms: Presize and partition the list. */
2411 ext_in
= ext_block
.data ();
2412 ext_in_end
= ext_in
+ hdr
->iextMax
;
2413 for (; ext_in
< ext_in_end
; ext_in
++)
2415 /* See calls to complain below. */
2416 if (ext_in
->ifd
>= -1
2417 && ext_in
->ifd
< hdr
->ifdMax
2418 && ext_in
->asym
.iss
>= 0
2419 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2420 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2423 /* Pass 1.5 over files: partition out global symbol space. */
2425 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2427 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2428 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2429 fdr_to_pst
[f_idx
].n_globals
= 0;
2434 For ECOFF in ELF, we skip the creation of the minimal symbols.
2435 The ECOFF symbols should be a subset of the Elf symbols, and the
2436 section information of the elf symbols will be more accurate.
2437 FIXME! What about Irix 5's native linker?
2439 By default, Elf sections which don't exist in ECOFF
2440 get put in ECOFF's absolute section by the gnu linker.
2441 Since absolute sections don't get relocated, we
2442 end up calculating an address different from that of
2443 the symbol's minimal symbol (created earlier from the
2446 To fix this, either :
2447 1) don't create the duplicate symbol
2448 (assumes ECOFF symtab is a subset of the ELF symtab;
2449 assumes no side-effects result from ignoring ECOFF symbol)
2450 2) create it, only if lookup for existing symbol in ELF's minimal
2453 assumes no side-effects result from ignoring ECOFF symbol)
2454 3) create it, but lookup ELF's minimal symbol and use it's section
2455 during relocation, then modify "uniqify" phase to merge and
2456 eliminate the duplicate symbol
2457 (highly inefficient)
2459 I've implemented #1 here...
2460 Skip the creation of the minimal symbols based on the ECOFF
2463 /* Pass 2 over external syms: fill in external symbols. */
2464 ext_in
= ext_block
.data ();
2465 ext_in_end
= ext_in
+ hdr
->iextMax
;
2466 for (; ext_in
< ext_in_end
; ext_in
++)
2468 enum minimal_symbol_type ms_type
= mst_text
;
2469 CORE_ADDR svalue
= ext_in
->asym
.value
;
2471 /* The Irix 5 native tools seem to sometimes generate bogus
2472 external symbols. */
2473 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2475 complaint (_("bad ifd for external symbol: %d (max %ld)"),
2476 ext_in
->ifd
, hdr
->ifdMax
);
2479 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2481 complaint (_("bad iss for external symbol: %ld (max %ld)"),
2482 ext_in
->asym
.iss
, hdr
->issExtMax
);
2486 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2487 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2490 if (SC_IS_UNDEF (ext_in
->asym
.sc
) || ext_in
->asym
.sc
== scNil
)
2494 /* Pass 3 over files, over local syms: fill in static symbols. */
2495 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2497 /* Process ECOFF Symbol Types and Storage Classes. */
2498 switch (ext_in
->asym
.st
)
2501 /* Beginnning of Procedure */
2504 /* Load time only static procs */
2505 ms_type
= mst_file_text
;
2508 /* External symbol */
2509 if (SC_IS_COMMON (ext_in
->asym
.sc
))
2511 /* The value of a common symbol is its size, not its address.
2515 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2519 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2523 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2533 /* On certain platforms, some extra label symbols can be
2534 generated by the linker. One possible usage for this kind
2535 of symbols is to represent the address of the begining of a
2536 given section. For instance, on Tru64 5.1, the address of
2537 the _ftext label is the start address of the .text section.
2539 The storage class of these symbols is usually directly
2540 related to the section to which the symbol refers. For
2541 instance, on Tru64 5.1, the storage class for the _fdata
2542 label is scData, refering to the .data section.
2544 It is actually possible that the section associated to the
2545 storage class of the label does not exist. On True64 5.1
2546 for instance, the libm.so shared library does not contain
2547 any .data section, although it contains a _fpdata label
2548 which storage class is scData... Since these symbols are
2549 usually useless for the debugger user anyway, we just
2550 discard these symbols. */
2552 if (SC_IS_TEXT (ext_in
->asym
.sc
))
2554 if (objfile
->sect_index_text
== -1)
2557 ms_type
= mst_file_text
;
2559 else if (SC_IS_DATA (ext_in
->asym
.sc
))
2561 if (objfile
->sect_index_data
== -1)
2564 ms_type
= mst_file_data
;
2566 else if (SC_IS_BSS (ext_in
->asym
.sc
))
2568 if (objfile
->sect_index_bss
== -1)
2571 ms_type
= mst_file_bss
;
2573 else if (SC_IS_SBSS (ext_in
->asym
.sc
))
2575 const int sbss_sect_index
= get_section_index (objfile
, ".sbss");
2577 if (sbss_sect_index
== -1)
2580 ms_type
= mst_file_bss
;
2587 /* The alpha has the section start addresses in stLocal symbols
2588 whose name starts with a `.'. Skip those but complain for all
2589 other stLocal symbols.
2590 Irix6 puts the section start addresses in stNil symbols, skip
2596 ms_type
= mst_unknown
;
2597 unknown_ext_complaint (name
);
2599 if (!ECOFF_IN_ELF (cur_bfd
))
2600 record_minimal_symbol (reader
, name
, svalue
, ms_type
, ext_in
->asym
.sc
,
2604 /* Pass 3 over files, over local syms: fill in static symbols. */
2605 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2607 struct partial_symtab
*save_pst
;
2611 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2615 fdr_to_pst
[f_idx
].pst
= NULL
;
2619 /* Determine the start address for this object file from the
2620 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2624 if (relocatable
|| textlow
!= 0)
2625 textlow
+= ANOFFSET (objfile
->section_offsets
,
2626 SECT_OFF_TEXT (objfile
));
2630 pst
= start_psymtab_common (objfile
,
2633 objfile
->global_psymbols
,
2634 objfile
->static_psymbols
);
2635 pst
->read_symtab_private
= XOBNEW (&objfile
->objfile_obstack
, symloc
);
2636 memset (pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2639 FDR_IDX (pst
) = f_idx
;
2640 CUR_BFD (pst
) = cur_bfd
;
2641 DEBUG_SWAP (pst
) = debug_swap
;
2642 DEBUG_INFO (pst
) = debug_info
;
2643 PENDING_LIST (pst
) = pending_list
;
2645 /* The way to turn this into a symtab is to call... */
2646 pst
->read_symtab
= mdebug_read_symtab
;
2648 /* Set up language for the pst.
2649 The language from the FDR is used if it is unambigious (e.g. cfront
2650 with native cc and g++ will set the language to C).
2651 Otherwise we have to deduce the language from the filename.
2652 Native ecoff has every header file in a separate FDR, so
2653 deduce_language_from_filename will return language_unknown for
2654 a header file, which is not what we want.
2655 But the FDRs for the header files are after the FDR for the source
2656 file, so we can assign the language of the source file to the
2657 following header files. Then we save the language in the private
2658 pst data so that we can reuse it when building symtabs. */
2659 prev_language
= psymtab_language
;
2663 case langCplusplusV2
:
2664 psymtab_language
= language_cplus
;
2667 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2670 if (psymtab_language
== language_unknown
)
2671 psymtab_language
= prev_language
;
2672 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2674 pst
->texthigh
= pst
->textlow
;
2676 /* For stabs-in-ecoff files, the second symbol must be @stab.
2677 This symbol is emitted by mips-tfile to signal that the
2678 current object file uses encapsulated stabs instead of mips
2679 ecoff for local symbols. (It is the second symbol because
2680 the first symbol is the stFile used to signal the start of a
2682 processing_gcc_compilation
= 0;
2685 (*swap_sym_in
) (cur_bfd
,
2686 ((char *) debug_info
->external_sym
2687 + (fh
->isymBase
+ 1) * external_sym_size
),
2689 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
2691 processing_gcc_compilation
= 2;
2694 if (processing_gcc_compilation
!= 0)
2696 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2699 const char *namestring
;
2701 (*swap_sym_in
) (cur_bfd
,
2702 (((char *) debug_info
->external_sym
)
2703 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2705 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2706 if (!ECOFF_IS_STAB (&sh
))
2708 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2713 if (sh
.st
== stStaticProc
)
2715 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2716 record_minimal_symbol (reader
, namestring
, sh
.value
,
2717 mst_file_text
, sh
.sc
,
2720 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2721 SECT_OFF_TEXT (objfile
));
2722 procaddr
= sh
.value
;
2724 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2725 (debug_info
->external_aux
2728 (*swap_sym_in
) (cur_bfd
,
2729 ((char *) debug_info
->external_sym
2730 + ((fh
->isymBase
+ isym
- 1)
2731 * external_sym_size
)),
2735 CORE_ADDR high
= procaddr
+ sh
.value
;
2737 /* Kludge for Irix 5.2 zero fh->adr. */
2739 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2740 pst
->textlow
= procaddr
;
2741 if (high
> pst
->texthigh
)
2742 pst
->texthigh
= high
;
2745 else if (sh
.st
== stStatic
)
2760 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2761 record_minimal_symbol (reader
, namestring
, sh
.value
,
2762 mst_file_data
, sh
.sc
,
2764 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2765 SECT_OFF_DATA (objfile
));
2769 /* FIXME! Shouldn't this use cases for bss,
2770 then have the default be abs? */
2771 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2772 record_minimal_symbol (reader
, namestring
, sh
.value
,
2773 mst_file_bss
, sh
.sc
,
2775 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2776 SECT_OFF_BSS (objfile
));
2782 /* Handle stabs continuation. */
2784 char *stabstring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2785 int len
= strlen (stabstring
);
2787 while (stabstring
[len
- 1] == '\\')
2790 char *stabstring1
= stabstring
;
2794 /* Ignore continuation char from 1st string. */
2797 /* Read next stabstring. */
2799 (*swap_sym_in
) (cur_bfd
,
2800 (((char *) debug_info
->external_sym
)
2801 + (fh
->isymBase
+ cur_sdx
)
2802 * external_sym_size
),
2804 stabstring2
= debug_info
->ss
+ fh
->issBase
+ sh2
.iss
;
2805 len2
= strlen (stabstring2
);
2807 /* Concatinate stabstring2 with stabstring1. */
2809 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
2811 = (char *) xrealloc (stabstring
, len
+ len2
+ 1);
2814 stabstring
= (char *) xmalloc (len
+ len2
+ 1);
2815 strcpy (stabstring
, stabstring1
);
2817 strcpy (stabstring
+ len
, stabstring2
);
2825 /* Standard, external, non-debugger, symbols. */
2827 case N_TEXT
| N_EXT
:
2828 case N_NBTEXT
| N_EXT
:
2829 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2830 SECT_OFF_TEXT (objfile
));
2833 case N_DATA
| N_EXT
:
2834 case N_NBDATA
| N_EXT
:
2835 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2836 SECT_OFF_DATA (objfile
));
2841 case N_NBBSS
| N_EXT
:
2842 case N_SETV
| N_EXT
: /* FIXME, is this in BSS? */
2843 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2844 SECT_OFF_BSS (objfile
));
2851 /* Standard, local, non-debugger, symbols. */
2855 /* We need to be able to deal with both N_FN or
2856 N_TEXT, because we have no way of knowing
2857 whether the sys-supplied ld or GNU ld was used
2858 to make the executable. Sequents throw in
2859 another wrinkle -- they renumbered N_FN. */
2867 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
2868 SECT_OFF_DATA (objfile
));
2871 case N_UNDF
| N_EXT
:
2872 continue; /* Just undefined, not COMMON. */
2877 /* Lots of symbol types we can just ignore. */
2884 /* Keep going . . . */
2887 * Special symbol types for GNU
2890 case N_INDR
| N_EXT
:
2892 case N_SETA
| N_EXT
:
2894 case N_SETT
| N_EXT
:
2896 case N_SETD
| N_EXT
:
2898 case N_SETB
| N_EXT
:
2908 static int prev_so_symnum
= -10;
2911 /* A zero value is probably an indication for the
2912 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2913 for zero, so don't relocate it. */
2916 && gdbarch_sofun_address_maybe_missing (gdbarch
))
2917 textlow_not_set
= 1;
2919 textlow_not_set
= 0;
2921 if (prev_so_symnum
!= symnum
- 1)
2922 { /* Here if prev stab wasn't N_SO. */
2925 pst
= (struct partial_symtab
*) 0;
2927 dependencies_used
= 0;
2931 prev_so_symnum
= symnum
;
2933 /* End the current partial symtab and start a
2936 /* SET_NAMESTRING ();*/
2937 namestring
= stabstring
;
2939 /* Null name means end of .o file. Don't start a new
2941 if (*namestring
== '\000')
2944 /* Some compilers (including gcc) emit a pair of
2945 initial N_SOs. The first one is a directory name;
2946 the second the file name. If pst exists, is
2947 empty, and has a filename ending in '/', we assume
2948 the previous N_SO was a directory name. */
2949 p
= lbasename (namestring
);
2950 if (p
!= namestring
&& *p
== '\000')
2951 continue; /* Simply ignore directory
2954 /* Some other compilers (C++ ones in particular) emit
2955 useless SOs for non-existant .c files. We ignore
2956 all subsequent SOs that immediately follow the
2969 enum language tmp_language
;
2971 /* Mark down an include file in the current psymtab. */
2973 /* SET_NAMESTRING (); */
2974 namestring
= stabstring
;
2977 = deduce_language_from_filename (namestring
);
2979 /* Only change the psymtab's language if we've
2980 learned something useful (eg. tmp_language is not
2981 language_unknown). In addition, to match what
2982 start_subfile does, never change from C++ to
2984 if (tmp_language
!= language_unknown
2985 && (tmp_language
!= language_c
2986 || psymtab_language
!= language_cplus
))
2987 psymtab_language
= tmp_language
;
2989 /* In C++, one may expect the same filename to come
2990 round many times, when code is coming alternately
2991 from the main file and from inline functions in
2992 other files. So I check to see if this is a file
2993 we've seen before -- either the main source file,
2994 or a previously included file.
2996 This seems to be a lot of time to be spending on
2997 N_SOL, but things like "break c-exp.y:435" need to
2998 work (I suppose the psymtab_include_list could be
2999 hashed or put in a binary tree, if profiling shows
3000 this is a major hog). */
3001 if (pst
&& filename_cmp (namestring
, pst
->filename
) == 0)
3007 for (i
= 0; i
< includes_used
; i
++)
3008 if (filename_cmp (namestring
,
3009 psymtab_include_list
[i
]) == 0)
3018 psymtab_include_list
[includes_used
++] = namestring
;
3019 if (includes_used
>= includes_allocated
)
3021 const char **orig
= psymtab_include_list
;
3023 psymtab_include_list
= (const char **)
3024 alloca ((includes_allocated
*= 2) *
3025 sizeof (const char *));
3026 memcpy (psymtab_include_list
, orig
,
3027 includes_used
* sizeof (const char *));
3031 case N_LSYM
: /* Typedef or automatic variable. */
3032 case N_STSYM
: /* Data seg var -- static */
3033 case N_LCSYM
: /* BSS " */
3034 case N_ROSYM
: /* Read-only data seg var -- static. */
3035 case N_NBSTS
: /* Gould nobase. */
3036 case N_NBLCS
: /* symbols. */
3038 case N_GSYM
: /* Global (extern) variable; can be
3039 data or bss (sigh FIXME). */
3041 /* Following may probably be ignored; I'll leave them here
3042 for now (until I do Pascal and Modula 2 extensions). */
3044 case N_PC
: /* I may or may not need this; I
3046 case N_M2C
: /* I suspect that I can ignore this
3048 case N_SCOPE
: /* Same. */
3050 /* SET_NAMESTRING (); */
3051 namestring
= stabstring
;
3052 p
= (char *) strchr (namestring
, ':');
3054 continue; /* Not a debugging symbol. */
3058 /* Main processing section for debugging symbols which
3059 the initial read through the symbol tables needs to
3060 worry about. If we reach this point, the symbol
3061 which we are considering is definitely one we are
3062 interested in. p must also contain the (valid)
3063 index into the namestring which indicates the
3064 debugging type symbol. */
3069 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3070 SECT_OFF_DATA (objfile
));
3072 if (gdbarch_static_transform_name_p (gdbarch
))
3073 namestring
= gdbarch_static_transform_name
3074 (gdbarch
, namestring
);
3076 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3077 VAR_DOMAIN
, LOC_STATIC
,
3078 &objfile
->static_psymbols
,
3080 psymtab_language
, objfile
);
3083 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3084 SECT_OFF_DATA (objfile
));
3085 /* The addresses in these entries are reported
3086 to be wrong. See the code that reads 'G's
3088 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3089 VAR_DOMAIN
, LOC_STATIC
,
3090 &objfile
->global_psymbols
,
3092 psymtab_language
, objfile
);
3096 /* When a 'T' entry is defining an anonymous enum, it
3097 may have a name which is the empty string, or a
3098 single space. Since they're not really defining a
3099 symbol, those shouldn't go in the partial symbol
3100 table. We do pick up the elements of such enums at
3101 'check_enum:', below. */
3102 if (p
>= namestring
+ 2
3103 || (p
== namestring
+ 1
3104 && namestring
[0] != ' '))
3106 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3107 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3108 &objfile
->static_psymbols
,
3109 0, psymtab_language
, objfile
);
3112 /* Also a typedef with the same name. */
3113 add_psymbol_to_list (namestring
,
3115 VAR_DOMAIN
, LOC_TYPEDEF
,
3116 &objfile
->static_psymbols
,
3117 0, psymtab_language
,
3124 if (p
!= namestring
) /* a name is there, not
3127 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3128 VAR_DOMAIN
, LOC_TYPEDEF
,
3129 &objfile
->static_psymbols
,
3130 0, psymtab_language
, objfile
);
3133 /* If this is an enumerated type, we need to add
3134 all the enum constants to the partial symbol
3135 table. This does not cover enums without names,
3136 e.g. "enum {a, b} c;" in C, but fortunately
3137 those are rare. There is no way for GDB to find
3138 those from the enum type without spending too
3139 much time on it. Thus to solve this problem,
3140 the compiler needs to put out the enum in a
3141 nameless type. GCC2 does this. */
3143 /* We are looking for something of the form
3144 <name> ":" ("t" | "T") [<number> "="] "e"
3145 {<constant> ":" <value> ","} ";". */
3147 /* Skip over the colon and the 't' or 'T'. */
3149 /* This type may be given a number. Also, numbers
3150 can come in pairs like (0,26). Skip over it. */
3151 while ((*p
>= '0' && *p
<= '9')
3152 || *p
== '(' || *p
== ',' || *p
== ')'
3158 /* The aix4 compiler emits extra crud before
3162 /* Skip over the type (?). */
3166 /* Skip over the colon. */
3170 /* We have found an enumerated type. */
3171 /* According to comments in read_enum_type
3172 a comma could end it instead of a semicolon.
3173 I don't know where that happens.
3175 while (*p
&& *p
!= ';' && *p
!= ',')
3179 /* Check for and handle cretinous dbx
3180 symbol name continuation! */
3181 if (*p
== '\\' || (*p
== '?' && p
[1] == '\0'))
3182 p
= next_symbol_text (objfile
);
3184 /* Point to the character after the name
3185 of the enum constant. */
3186 for (q
= p
; *q
&& *q
!= ':'; q
++)
3188 /* Note that the value doesn't matter for
3189 enum constants in psymtabs, just in
3191 add_psymbol_to_list (p
, q
- p
, 1,
3192 VAR_DOMAIN
, LOC_CONST
,
3193 &objfile
->static_psymbols
,
3194 0, psymtab_language
,
3196 /* Point past the name. */
3198 /* Skip over the value. */
3199 while (*p
&& *p
!= ',')
3201 /* Advance past the comma. */
3208 /* Constant, e.g. from "const" in Pascal. */
3209 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3210 VAR_DOMAIN
, LOC_CONST
,
3211 &objfile
->static_psymbols
,
3212 0, psymtab_language
, objfile
);
3218 int name_len
= p
- namestring
;
3219 char *name
= (char *) xmalloc (name_len
+ 1);
3221 memcpy (name
, namestring
, name_len
);
3222 name
[name_len
] = '\0';
3223 function_outside_compilation_unit_complaint (name
);
3226 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3227 SECT_OFF_TEXT (objfile
));
3228 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3229 VAR_DOMAIN
, LOC_BLOCK
,
3230 &objfile
->static_psymbols
,
3232 psymtab_language
, objfile
);
3235 /* Global functions were ignored here, but now they
3236 are put into the global psymtab like one would
3237 expect. They're also in the minimal symbol
3242 int name_len
= p
- namestring
;
3243 char *name
= (char *) xmalloc (name_len
+ 1);
3245 memcpy (name
, namestring
, name_len
);
3246 name
[name_len
] = '\0';
3247 function_outside_compilation_unit_complaint (name
);
3250 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3251 SECT_OFF_TEXT (objfile
));
3252 add_psymbol_to_list (namestring
, p
- namestring
, 1,
3253 VAR_DOMAIN
, LOC_BLOCK
,
3254 &objfile
->global_psymbols
,
3256 psymtab_language
, objfile
);
3259 /* Two things show up here (hopefully); static
3260 symbols of local scope (static used inside
3261 braces) or extensions of structure symbols. We
3276 case '#': /* For symbol identification (used
3281 /* It is a C++ nested symbol. We don't need to
3282 record it (I don't think); if we try to look up
3283 foo::bar::baz, then symbols for the symtab
3284 containing foo should get read in, I think. */
3285 /* Someone says sun cc puts out symbols like
3286 /foo/baz/maclib::/usr/local/bin/maclib,
3287 which would get here with a symbol type of ':'. */
3291 /* Unexpected symbol descriptor. The second and
3292 subsequent stabs of a continued stab can show up
3293 here. The question is whether they ever can
3294 mimic a normal stab--it would be nice if not,
3295 since we certainly don't want to spend the time
3296 searching to the end of every string looking for
3299 complaint (_("unknown symbol descriptor `%c'"), p
[1]);
3301 /* Ignore it; perhaps it is an extension that we don't
3310 /* Solaris 2 end of module, finish current partial
3311 symbol table. dbx_end_psymtab will set
3312 pst->texthigh to the proper value, which is
3313 necessary if a module compiled without
3314 debugging info follows this module. */
3316 && gdbarch_sofun_address_maybe_missing (gdbarch
))
3318 pst
= (struct partial_symtab
*) 0;
3320 dependencies_used
= 0;
3325 if (sh
.value
> save_pst
->texthigh
)
3326 save_pst
->texthigh
= sh
.value
;
3331 case N_SSYM
: /* Claim: Structure or union
3332 element. Hopefully, I can
3334 case N_ENTRY
: /* Alternate entry point; can
3336 case N_MAIN
: /* Can definitely ignore this. */
3337 case N_CATCH
: /* These are GNU C++ extensions. */
3338 case N_EHDECL
: /* that can safely be ignored here. */
3348 case N_NSYMS
: /* Ultrix 4.0: symbol count */
3349 case N_DEFD
: /* GNU Modula-2 */
3350 case N_ALIAS
: /* SunPro F77: alias name, ignore
3353 case N_OBJ
: /* Useless types from Solaris. */
3355 /* These symbols aren't interesting; don't worry about
3361 /* If we haven't found it yet, ignore it. It's
3362 probably some new type we don't know about yet. */
3363 complaint (_("unknown symbol type %s"),
3364 hex_string (type_code
)); /* CUR_SYMBOL_TYPE */
3368 && stabstring
!= debug_info
->ss
+ fh
->issBase
+ sh
.iss
)
3371 /* end - Handle continuation */
3376 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
3379 enum address_class theclass
;
3380 CORE_ADDR minsym_value
;
3382 (*swap_sym_in
) (cur_bfd
,
3383 ((char *) debug_info
->external_sym
3384 + ((fh
->isymBase
+ cur_sdx
)
3385 * external_sym_size
)),
3388 if (ECOFF_IS_STAB (&sh
))
3394 /* Non absolute static symbols go into the minimal table. */
3395 if (SC_IS_UNDEF (sh
.sc
) || sh
.sc
== scNil
3396 || (sh
.index
== indexNil
3397 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
3399 /* FIXME, premature? */
3404 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3406 minsym_value
= sh
.value
;
3412 /* The value of a stEnd symbol is the displacement from the
3413 corresponding start symbol value, do not relocate it. */
3415 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3416 SECT_OFF_TEXT (objfile
));
3423 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3424 SECT_OFF_DATA (objfile
));
3428 sh
.value
+= ANOFFSET (objfile
->section_offsets
,
3429 SECT_OFF_BSS (objfile
));
3440 reader
.record_with_info (name
, minsym_value
,
3442 SECT_OFF_TEXT (objfile
));
3447 /* Ignore all parameter symbol records. */
3448 if (sh
.index
>= hdr
->iauxMax
)
3450 /* Should not happen, but does when cross-compiling
3451 with the MIPS compiler. FIXME -- pull later. */
3452 index_complaint (name
);
3453 new_sdx
= cur_sdx
+ 1; /* Don't skip at all. */
3456 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
3457 (debug_info
->external_aux
3461 if (new_sdx
<= cur_sdx
)
3463 /* This should not happen either... FIXME. */
3464 complaint (_("bad proc end in aux found from symbol %s"),
3466 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3469 /* For stProc symbol records, we need to check the
3470 storage class as well, as only (stProc, scText)
3471 entries represent "real" procedures - See the
3472 Compaq document titled "Object File / Symbol Table
3473 Format Specification" for more information. If the
3474 storage class is not scText, we discard the whole
3475 block of symbol records for this stProc. */
3476 if (sh
.st
== stProc
&& sh
.sc
!= scText
)
3479 /* Usually there is a local and a global stProc symbol
3480 for a function. This means that the function name
3481 has already been entered into the mimimal symbol table
3482 while processing the global symbols in pass 2 above.
3483 One notable exception is the PROGRAM name from
3484 f77 compiled executables, it is only put out as
3485 local stProc symbol, and a global MAIN__ stProc symbol
3486 points to it. It doesn't matter though, as gdb is
3487 still able to find the PROGRAM name via the partial
3488 symbol table, and the MAIN__ symbol via the minimal
3490 if (sh
.st
== stProc
)
3491 add_psymbol_to_list (name
, strlen (name
), 1,
3492 VAR_DOMAIN
, LOC_BLOCK
,
3493 &objfile
->global_psymbols
,
3494 sh
.value
, psymtab_language
, objfile
);
3496 add_psymbol_to_list (name
, strlen (name
), 1,
3497 VAR_DOMAIN
, LOC_BLOCK
,
3498 &objfile
->static_psymbols
,
3499 sh
.value
, psymtab_language
, objfile
);
3501 procaddr
= sh
.value
;
3504 (*swap_sym_in
) (cur_bfd
,
3505 ((char *) debug_info
->external_sym
3506 + ((fh
->isymBase
+ cur_sdx
- 1)
3507 * external_sym_size
)),
3512 /* Kludge for Irix 5.2 zero fh->adr. */
3514 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
3515 pst
->textlow
= procaddr
;
3517 high
= procaddr
+ sh
.value
;
3518 if (high
> pst
->texthigh
)
3519 pst
->texthigh
= high
;
3522 case stStatic
: /* Variable */
3523 if (SC_IS_DATA (sh
.sc
))
3524 reader
.record_with_info (name
, minsym_value
,
3526 SECT_OFF_DATA (objfile
));
3528 reader
.record_with_info (name
, minsym_value
,
3530 SECT_OFF_BSS (objfile
));
3531 theclass
= LOC_STATIC
;
3534 case stIndirect
: /* Irix5 forward declaration */
3535 /* Skip forward declarations from Irix5 cc. */
3538 case stTypedef
: /* Typedef */
3539 /* Skip typedefs for forward declarations and opaque
3540 structs from alpha and mips cc. */
3541 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
3543 theclass
= LOC_TYPEDEF
;
3546 case stConstant
: /* Constant decl */
3547 theclass
= LOC_CONST
;
3553 case stBlock
: /* { }, str, un, enum */
3554 /* Do not create a partial symbol for cc unnamed aggregates
3555 and gcc empty aggregates. */
3556 if ((sh
.sc
== scInfo
3557 || SC_IS_COMMON (sh
.sc
))
3559 && sh
.index
!= cur_sdx
+ 2)
3561 add_psymbol_to_list (name
, strlen (name
), 1,
3562 STRUCT_DOMAIN
, LOC_TYPEDEF
,
3563 &objfile
->static_psymbols
,
3564 0, psymtab_language
, objfile
);
3566 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
3568 /* Skip over the block. */
3570 if (new_sdx
<= cur_sdx
)
3572 /* This happens with the Ultrix kernel. */
3573 complaint (_("bad aux index at block symbol %s"), name
);
3574 new_sdx
= cur_sdx
+ 1; /* Don't skip backward. */
3579 case stFile
: /* File headers */
3580 case stLabel
: /* Labels */
3581 case stEnd
: /* Ends of files */
3584 case stLocal
: /* Local variables */
3585 /* Normally these are skipped because we skip over
3586 all blocks we see. However, these can occur
3587 as visible symbols in a .h file that contains code. */
3591 /* Both complaints are valid: one gives symbol name,
3592 the other the offending symbol type. */
3593 complaint (_("unknown local symbol %s"),
3595 complaint (_("with type %d"), sh
.st
);
3599 /* Use this gdb symbol. */
3600 add_psymbol_to_list (name
, strlen (name
), 1,
3601 VAR_DOMAIN
, theclass
,
3602 &objfile
->static_psymbols
,
3603 sh
.value
, psymtab_language
, objfile
);
3605 cur_sdx
++; /* Go to next file symbol. */
3608 /* Now do enter the external symbols. */
3609 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
3610 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
3611 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
3612 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
3613 for (; --cur_sdx
>= 0; ext_ptr
++)
3615 enum address_class theclass
;
3620 if (ext_ptr
->ifd
!= f_idx
)
3621 internal_error (__FILE__
, __LINE__
,
3622 _("failed internal consistency check"));
3623 psh
= &ext_ptr
->asym
;
3625 /* Do not add undefined symbols to the partial symbol table. */
3626 if (SC_IS_UNDEF (psh
->sc
) || psh
->sc
== scNil
)
3629 svalue
= psh
->value
;
3634 svalue
+= ANOFFSET (objfile
->section_offsets
,
3635 SECT_OFF_TEXT (objfile
));
3642 svalue
+= ANOFFSET (objfile
->section_offsets
,
3643 SECT_OFF_DATA (objfile
));
3647 svalue
+= ANOFFSET (objfile
->section_offsets
,
3648 SECT_OFF_BSS (objfile
));
3655 /* These are generated for static symbols in .o files,
3660 /* External procedure symbols have been entered
3661 into the minimal symbol table in pass 2 above.
3662 Ignore them, as parse_external will ignore them too. */
3665 theclass
= LOC_LABEL
;
3668 unknown_ext_complaint (debug_info
->ssext
+ psh
->iss
);
3669 /* Pretend it's global. */
3672 /* Global common symbols are resolved by the runtime loader,
3674 if (SC_IS_COMMON (psh
->sc
))
3677 theclass
= LOC_STATIC
;
3680 name
= debug_info
->ssext
+ psh
->iss
;
3681 add_psymbol_to_list (name
, strlen (name
), 1,
3682 VAR_DOMAIN
, theclass
,
3683 &objfile
->global_psymbols
,
3684 svalue
, psymtab_language
, objfile
);
3688 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3689 empty and put on the free list. */
3690 fdr_to_pst
[f_idx
].pst
3691 = dbx_end_psymtab (objfile
, save_pst
,
3692 psymtab_include_list
, includes_used
,
3693 -1, save_pst
->texthigh
,
3694 dependency_list
, dependencies_used
,
3697 dependencies_used
= 0;
3699 /* The objfile has its functions reordered if this partial symbol
3700 table overlaps any other partial symbol table.
3701 We cannot assume a reordered objfile if a partial symbol table
3702 is contained within another partial symbol table, as partial symbol
3703 tables for include files with executable code are contained
3704 within the partial symbol table for the including source file,
3705 and we do not want to flag the objfile reordered for these cases.
3707 This strategy works well for Irix-5.2 shared libraries, but we
3708 might have to use a more elaborate (and slower) algorithm for
3710 save_pst
= fdr_to_pst
[f_idx
].pst
;
3711 if (save_pst
!= NULL
3712 && save_pst
->textlow
!= 0
3713 && !(objfile
->flags
& OBJF_REORDERED
))
3715 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
3718 && save_pst
->textlow
>= pst
->textlow
3719 && save_pst
->textlow
< pst
->texthigh
3720 && save_pst
->texthigh
> pst
->texthigh
)
3722 objfile
->flags
|= OBJF_REORDERED
;
3729 /* Now scan the FDRs for dependencies. */
3730 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
3732 fh
= f_idx
+ debug_info
->fdr
;
3733 pst
= fdr_to_pst
[f_idx
].pst
;
3735 if (pst
== (struct partial_symtab
*) NULL
)
3738 /* This should catch stabs-in-ecoff. */
3742 /* Skip the first file indirect entry as it is a self dependency for
3743 source files or a reverse .h -> .c dependency for header files. */
3744 pst
->number_of_dependencies
= 0;
3745 pst
->dependencies
= XOBNEWVEC (&objfile
->objfile_obstack
,
3746 partial_symtab
*, (fh
->crfd
- 1));
3747 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3751 (*swap_rfd_in
) (cur_bfd
,
3752 ((char *) debug_info
->external_rfd
3753 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3755 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3757 complaint (_("bad file number %ld"), rh
);
3761 /* Skip self dependencies of header files. */
3765 /* Do not add to dependeny list if psymtab was empty. */
3766 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*) NULL
)
3768 pst
->dependencies
[pst
->number_of_dependencies
++]
3769 = fdr_to_pst
[rh
].pst
;
3773 /* Remove the dummy psymtab created for -O3 images above, if it is
3774 still empty, to enable the detection of stripped executables. */
3775 if (objfile
->psymtabs
->next
== NULL
3776 && objfile
->psymtabs
->number_of_dependencies
== 0
3777 && objfile
->psymtabs
->n_global_syms
== 0
3778 && objfile
->psymtabs
->n_static_syms
== 0)
3779 objfile
->psymtabs
= NULL
;
3782 /* If the current psymbol has an enumerated type, we need to add
3783 all the enum constants to the partial symbol table. */
3786 handle_psymbol_enumerators (struct objfile
*objfile
, FDR
*fh
, int stype
,
3789 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3790 void (*const swap_sym_in
) (bfd
*, void *, SYMR
*) = debug_swap
->swap_sym_in
;
3791 char *ext_sym
= ((char *) debug_info
->external_sym
3792 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3802 /* It is an enumerated type if the next symbol entry is a stMember
3803 and its auxiliary index is indexNil or its auxiliary entry
3804 is a plain btNil or btVoid.
3805 Alpha cc -migrate enums are recognized by a zero index and
3806 a zero symbol value.
3807 DU 4.0 cc enums are recognized by a member type of btEnum without
3808 qualifiers and a zero symbol value. */
3809 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3810 if (sh
.st
!= stMember
)
3813 if (sh
.index
== indexNil
3814 || (sh
.index
== 0 && svalue
== 0))
3816 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3817 &(debug_info
->external_aux
3818 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3820 if ((tir
.bt
!= btNil
3822 && (tir
.bt
!= btEnum
|| svalue
!= 0))
3823 || tir
.tq0
!= tqNil
)
3835 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3836 if (sh
.st
!= stMember
)
3838 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3840 /* Note that the value doesn't matter for enum constants
3841 in psymtabs, just in symtabs. */
3842 add_psymbol_to_list (name
, strlen (name
), 1,
3843 VAR_DOMAIN
, LOC_CONST
,
3844 &objfile
->static_psymbols
,
3845 0, psymtab_language
, objfile
);
3846 ext_sym
+= external_sym_size
;
3850 /* Get the next symbol. OBJFILE is unused. */
3853 mdebug_next_symbol_text (struct objfile
*objfile
)
3858 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3859 ((char *) debug_info
->external_sym
3860 + ((cur_fdr
->isymBase
+ cur_sdx
)
3861 * debug_swap
->external_sym_size
)),
3863 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3866 /* Ancillary function to psymtab_to_symtab(). Does all the work
3867 for turning the partial symtab PST into a symtab, recurring
3868 first on all dependent psymtabs. The argument FILENAME is
3869 only passed so we can see in debug stack traces what file
3872 This function has a split personality, based on whether the
3873 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3874 The flow of control and even the memory allocation differs. FIXME. */
3877 psymtab_to_symtab_1 (struct objfile
*objfile
,
3878 struct partial_symtab
*pst
, const char *filename
)
3880 bfd_size_type external_sym_size
;
3881 bfd_size_type external_pdr_size
;
3882 void (*swap_sym_in
) (bfd
*, void *, SYMR
*);
3883 void (*swap_pdr_in
) (bfd
*, void *, PDR
*);
3885 struct compunit_symtab
*cust
= NULL
;
3887 struct linetable
*lines
;
3888 CORE_ADDR lowest_pdr_addr
= 0;
3889 int last_symtab_ended
= 0;
3890 struct section_offsets
*section_offsets
= objfile
->section_offsets
;
3896 /* Read in all partial symbtabs on which this one is dependent.
3897 NOTE that we do have circular dependencies, sigh. We solved
3898 that by setting pst->readin before this point. */
3900 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3901 if (!pst
->dependencies
[i
]->readin
)
3903 /* Inform about additional files to be read in. */
3906 fputs_filtered (" ", gdb_stdout
);
3908 fputs_filtered ("and ", gdb_stdout
);
3910 printf_filtered ("%s...",
3911 pst
->dependencies
[i
]->filename
);
3912 wrap_here (""); /* Flush output */
3913 gdb_flush (gdb_stdout
);
3915 /* We only pass the filename for debug purposes. */
3916 psymtab_to_symtab_1 (objfile
, pst
->dependencies
[i
],
3917 pst
->dependencies
[i
]->filename
);
3920 /* Do nothing if this is a dummy psymtab. */
3922 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3923 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3926 /* Now read the symbols for this symtab. */
3928 cur_bfd
= CUR_BFD (pst
);
3929 debug_swap
= DEBUG_SWAP (pst
);
3930 debug_info
= DEBUG_INFO (pst
);
3931 pending_list
= PENDING_LIST (pst
);
3932 external_sym_size
= debug_swap
->external_sym_size
;
3933 external_pdr_size
= debug_swap
->external_pdr_size
;
3934 swap_sym_in
= debug_swap
->swap_sym_in
;
3935 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3936 mdebugread_objfile
= objfile
;
3937 cur_fd
= FDR_IDX (pst
);
3938 fh
= ((cur_fd
== -1)
3940 : debug_info
->fdr
+ cur_fd
);
3943 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3944 processing_gcc_compilation
= 0;
3945 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3949 (*swap_sym_in
) (cur_bfd
,
3950 ((char *) debug_info
->external_sym
3951 + (fh
->isymBase
+ 1) * external_sym_size
),
3953 if (strcmp (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3956 /* We indicate that this is a GCC compilation so that certain
3957 features will be enabled in stabsread/dbxread. */
3958 processing_gcc_compilation
= 2;
3962 if (processing_gcc_compilation
!= 0)
3964 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3966 /* This symbol table contains stabs-in-ecoff entries. */
3968 /* Parse local symbols first. */
3970 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr. */
3972 mdebugread_objfile
= NULL
;
3975 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3981 (*swap_sym_in
) (cur_bfd
,
3982 (((char *) debug_info
->external_sym
)
3983 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3985 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3987 /* XXX This is a hack. It will go away! */
3988 if (ECOFF_IS_STAB (&sh
) || (name
[0] == '#'))
3990 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3991 enum language language
= PST_PRIVATE (pst
)->pst_language
;
3993 /* We should never get non N_STAB symbols here, but they
3994 should be harmless, so keep process_one_symbol from
3995 complaining about them. */
3996 if (type_code
& N_STAB
)
3998 /* If we found a trailing N_SO with no name, process
3999 it here instead of in process_one_symbol, so we
4000 can keep a handle to its symtab. The symtab
4001 would otherwise be ended twice, once in
4002 process_one_symbol, and once after this loop. */
4003 if (type_code
== N_SO
4004 && get_last_source_file ()
4005 && previous_stab_code
!= (unsigned char) N_SO
4008 valu
+= ANOFFSET (section_offsets
,
4009 SECT_OFF_TEXT (objfile
));
4010 previous_stab_code
= N_SO
;
4011 cust
= end_symtab (valu
, SECT_OFF_TEXT (objfile
));
4013 last_symtab_ended
= 1;
4017 last_symtab_ended
= 0;
4018 process_one_symbol (type_code
, 0, valu
, name
,
4019 section_offsets
, objfile
, language
);
4022 /* Similarly a hack. */
4023 else if (name
[0] == '#')
4025 process_one_symbol (N_SLINE
, 0, valu
, name
,
4026 section_offsets
, objfile
, language
);
4028 if (type_code
== N_FUN
)
4030 /* Make up special symbol to contain
4031 procedure specific info. */
4032 mdebug_extra_func_info
*e
4033 = OBSTACK_ZALLOC (&mdebugread_objfile
->objfile_obstack
,
4034 mdebug_extra_func_info
);
4035 struct symbol
*s
= new_symbol (MDEBUG_EFI_SYMBOL_NAME
);
4037 SYMBOL_DOMAIN (s
) = LABEL_DOMAIN
;
4038 SYMBOL_ACLASS_INDEX (s
) = LOC_CONST
;
4039 SYMBOL_TYPE (s
) = objfile_type (objfile
)->builtin_void
;
4040 SYMBOL_VALUE_BYTES (s
) = (gdb_byte
*) e
;
4041 e
->pdr
.framereg
= -1;
4042 add_symbol_to_list (s
, get_local_symbols ());
4045 else if (sh
.st
== stLabel
)
4047 if (sh
.index
== indexNil
)
4049 /* This is what the gcc2_compiled and __gnu_compiled_*
4050 show up as. So don't complain. */
4055 /* Handle encoded stab line number. */
4056 valu
+= ANOFFSET (section_offsets
,
4057 SECT_OFF_TEXT (objfile
));
4058 record_line (get_current_subfile (), sh
.index
,
4059 gdbarch_addr_bits_remove (gdbarch
, valu
));
4062 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
4063 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
4064 /* These are generated by gcc-2.x, do not complain. */
4067 complaint (_("unknown stabs symbol %s"), name
);
4070 if (! last_symtab_ended
)
4072 cust
= end_symtab (pst
->texthigh
, SECT_OFF_TEXT (objfile
));
4076 /* There used to be a call to sort_blocks here, but this should not
4077 be necessary for stabs symtabs. And as sort_blocks modifies the
4078 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4079 it did the wrong thing if the first procedure in a file was
4080 generated via asm statements. */
4082 /* Fill in procedure info next. */
4090 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4092 pdr_ptr
= ((char *) debug_info
->external_pdr
4093 + fh
->ipdFirst
* external_pdr_size
);
4094 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4095 pdr_in
= pr_block
.data ();
4098 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4100 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4102 /* Determine lowest PDR address, the PDRs are not always
4104 if (pdr_in
== pr_block
.data ())
4105 lowest_pdr_addr
= pdr_in
->adr
;
4106 else if (pdr_in
->adr
< lowest_pdr_addr
)
4107 lowest_pdr_addr
= pdr_in
->adr
;
4110 pdr_in
= pr_block
.data ();
4111 pdr_in_end
= pdr_in
+ fh
->cpd
;
4112 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4113 parse_procedure (pdr_in
, cust
, pst
);
4118 /* This symbol table contains ordinary ecoff entries. */
4126 cust
= new_symtab ("unknown", 0, objfile
);
4130 maxlines
= 2 * fh
->cline
;
4131 cust
= new_symtab (pst
->filename
, maxlines
, objfile
);
4133 /* The proper language was already determined when building
4134 the psymtab, use it. */
4135 COMPUNIT_FILETABS (cust
)->language
= PST_PRIVATE (pst
)->pst_language
;
4138 psymtab_language
= COMPUNIT_FILETABS (cust
)->language
;
4140 lines
= SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
));
4142 /* Get a new lexical context. */
4144 push_parse_stack ();
4145 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4146 top_stack
->cur_block
4147 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4148 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
4149 BLOCK_END (top_stack
->cur_block
) = 0;
4150 top_stack
->blocktype
= stFile
;
4151 top_stack
->cur_type
= 0;
4152 top_stack
->procadr
= 0;
4153 top_stack
->numargs
= 0;
4154 found_ecoff_debugging_info
= 0;
4161 /* Parse local symbols first. */
4162 sym_ptr
= ((char *) debug_info
->external_sym
4163 + fh
->isymBase
* external_sym_size
);
4164 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
4165 while (sym_ptr
< sym_end
)
4170 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
4171 c
= parse_symbol (&sh
,
4172 debug_info
->external_aux
+ fh
->iauxBase
,
4173 sym_ptr
, fh
->fBigendian
,
4174 section_offsets
, objfile
);
4175 sym_ptr
+= c
* external_sym_size
;
4178 /* Linenumbers. At the end, check if we can save memory.
4179 parse_lines has to look ahead an arbitrary number of PDR
4180 structures, so we swap them all first. */
4188 gdb::def_vector
<PDR
> pr_block (fh
->cpd
);
4190 pdr_ptr
= ((char *) debug_info
->external_pdr
4191 + fh
->ipdFirst
* external_pdr_size
);
4192 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
4193 pdr_in
= pr_block
.data ();
4196 pdr_ptr
+= external_pdr_size
, pdr_in
++)
4198 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
4200 /* Determine lowest PDR address, the PDRs are not always
4202 if (pdr_in
== pr_block
.data ())
4203 lowest_pdr_addr
= pdr_in
->adr
;
4204 else if (pdr_in
->adr
< lowest_pdr_addr
)
4205 lowest_pdr_addr
= pdr_in
->adr
;
4208 parse_lines (fh
, pr_block
.data (), lines
, maxlines
,
4209 pst
, lowest_pdr_addr
);
4210 if (lines
->nitems
< fh
->cline
)
4211 lines
= shrink_linetable (lines
);
4213 /* Fill in procedure info next. */
4214 pdr_in
= pr_block
.data ();
4215 pdr_in_end
= pdr_in
+ fh
->cpd
;
4216 for (; pdr_in
< pdr_in_end
; pdr_in
++)
4217 parse_procedure (pdr_in
, NULL
, pst
);
4221 size
= lines
->nitems
;
4224 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust
))
4225 = ((struct linetable
*)
4226 obstack_copy (&mdebugread_objfile
->objfile_obstack
,
4227 lines
, (sizeof (struct linetable
)
4228 + size
* sizeof (lines
->item
))));
4231 /* .. and our share of externals.
4232 XXX use the global list to speed up things here. How?
4233 FIXME, Maybe quit once we have found the right number of ext's? */
4234 top_stack
->cur_st
= COMPUNIT_FILETABS (cust
);
4235 top_stack
->cur_block
4236 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack
->cur_st
),
4238 top_stack
->blocktype
= stFile
;
4240 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
4241 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
4242 parse_external (ext_ptr
, fh
->fBigendian
,
4243 section_offsets
, objfile
);
4245 /* If there are undefined symbols, tell the user.
4246 The alpha has an undefined symbol for every symbol that is
4247 from a shared library, so tell the user only if verbose is on. */
4248 if (info_verbose
&& n_undef_symbols
)
4250 printf_filtered (_("File %s contains %d unresolved references:"),
4251 symtab_to_filename_for_display
4252 (COMPUNIT_FILETABS (cust
)),
4254 printf_filtered ("\n\t%4d variables\n\t%4d "
4255 "procedures\n\t%4d labels\n",
4256 n_undef_vars
, n_undef_procs
, n_undef_labels
);
4257 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
4262 sort_blocks (COMPUNIT_FILETABS (cust
));
4265 /* Now link the psymtab and the symtab. */
4266 pst
->compunit_symtab
= cust
;
4268 mdebugread_objfile
= NULL
;
4271 /* Ancillary parsing procedures. */
4273 /* Return 1 if the symbol pointed to by SH has a cross reference
4274 to an opaque aggregate type, else 0. */
4277 has_opaque_xref (FDR
*fh
, SYMR
*sh
)
4284 if (sh
->index
== indexNil
)
4287 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
4288 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
4289 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
4293 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
4294 if (rn
->rfd
== 0xfff)
4295 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
4303 /* Lookup the type at relative index RN. Return it in TPP
4304 if found and in any event come up with its name PNAME.
4305 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4306 Return value says how many aux symbols we ate. */
4309 cross_ref (int fd
, union aux_ext
*ax
, struct type
**tpp
,
4310 enum type_code type_code
,
4311 /* Use to alloc new type if none is found. */
4312 const char **pname
, int bigend
, const char *sym_name
)
4321 struct mdebug_pending
*pend
;
4325 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
4327 /* Escape index means 'the next one'. */
4328 if (rn
->rfd
== 0xfff)
4331 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
4338 /* mips cc uses a rf of -1 for opaque struct definitions.
4339 Set TYPE_STUB for these types so that check_typedef will
4340 resolve them if the struct gets defined in another compilation unit. */
4343 *pname
= "<undefined>";
4344 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4345 TYPE_STUB (*tpp
) = 1;
4349 /* mips cc uses an escaped rn->index of 0 for struct return types
4350 of procedures that were compiled without -g. These will always remain
4352 if (rn
->rfd
== 0xfff && rn
->index
== 0)
4354 *pname
= "<undefined>";
4358 /* Find the relative file descriptor and the symbol in it. */
4359 fh
= get_rfd (fd
, rf
);
4360 xref_fd
= fh
- debug_info
->fdr
;
4362 if (rn
->index
>= fh
->csym
)
4364 /* File indirect entry is corrupt. */
4365 *pname
= "<illegal>";
4366 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4370 /* If we have processed this symbol then we left a forwarding
4371 pointer to the type in the pending list. If not, we`ll put
4372 it in a list of pending types, to be processed later when
4373 the file will be. In any event, we collect the name for the
4376 esh
= ((char *) debug_info
->external_sym
4377 + ((fh
->isymBase
+ rn
->index
)
4378 * debug_swap
->external_sym_size
));
4379 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
4381 /* Make sure that this type of cross reference can be handled. */
4382 if ((sh
.sc
!= scInfo
4383 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
4384 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
4385 && sh
.st
!= stEnum
))
4386 && (sh
.st
!= stBlock
|| !SC_IS_COMMON (sh
.sc
)))
4388 /* File indirect entry is corrupt. */
4389 *pname
= "<illegal>";
4390 bad_rfd_entry_complaint (sym_name
, xref_fd
, rn
->index
);
4394 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
4396 pend
= is_pending_symbol (fh
, esh
);
4401 /* We have not yet seen this type. */
4403 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
4407 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4409 a) forward declarations of structs/unions/enums which are not
4410 defined in this compilation unit.
4411 For these the type will be void. This is a bad design decision
4412 as cross referencing across compilation units is impossible
4413 due to the missing name.
4414 b) forward declarations of structs/unions/enums/typedefs which
4415 are defined later in this file or in another file in the same
4416 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4417 Simply cross reference those again to get the true type.
4418 The forward references are not entered in the pending list and
4419 in the symbol table. */
4421 (*debug_swap
->swap_tir_in
) (bigend
,
4422 &(debug_info
->external_aux
4423 + fh
->iauxBase
+ sh
.index
)->a_ti
,
4425 if (tir
.tq0
!= tqNil
)
4426 complaint (_("illegal tq0 in forward typedef for %s"), sym_name
);
4430 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4431 *pname
= "<undefined>";
4438 (debug_info
->external_aux
4439 + fh
->iauxBase
+ sh
.index
+ 1),
4440 tpp
, type_code
, pname
,
4441 fh
->fBigendian
, sym_name
);
4445 /* Follow a forward typedef. This might recursively
4446 call cross_ref till we get a non typedef'ed type.
4447 FIXME: This is not correct behaviour, but gdb currently
4448 cannot handle typedefs without type copying. Type
4449 copying is impossible as we might have mutual forward
4450 references between two files and the copied type would not
4451 get filled in when we later parse its definition. */
4452 *tpp
= parse_type (xref_fd
,
4453 debug_info
->external_aux
+ fh
->iauxBase
,
4457 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4458 add_pending (fh
, esh
, *tpp
);
4462 complaint (_("illegal bt %d in forward typedef for %s"), tir
.bt
,
4464 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4469 else if (sh
.st
== stTypedef
)
4471 /* Parse the type for a normal typedef. This might recursively call
4472 cross_ref till we get a non typedef'ed type.
4473 FIXME: This is not correct behaviour, but gdb currently
4474 cannot handle typedefs without type copying. But type copying is
4475 impossible as we might have mutual forward references between
4476 two files and the copied type would not get filled in when
4477 we later parse its definition. */
4478 *tpp
= parse_type (xref_fd
,
4479 debug_info
->external_aux
+ fh
->iauxBase
,
4483 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
4487 /* Cross reference to a struct/union/enum which is defined
4488 in another file in the same compilation unit but that file
4489 has not been parsed yet.
4490 Initialize the type only, it will be filled in when
4491 it's definition is parsed. */
4492 *tpp
= init_type (mdebugread_objfile
, type_code
, 0, NULL
);
4494 add_pending (fh
, esh
, *tpp
);
4497 /* We used one auxent normally, two if we got a "next one" rf. */
4502 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4503 keeping the symtab sorted. */
4505 static struct symbol
*
4506 mylookup_symbol (const char *name
, const struct block
*block
,
4507 domain_enum domain
, enum address_class theclass
)
4509 struct block_iterator iter
;
4514 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
4516 if (SYMBOL_LINKAGE_NAME (sym
)[0] == inc
4517 && SYMBOL_DOMAIN (sym
) == domain
4518 && SYMBOL_CLASS (sym
) == theclass
4519 && strcmp (SYMBOL_LINKAGE_NAME (sym
), name
) == 0)
4523 block
= BLOCK_SUPERBLOCK (block
);
4525 return mylookup_symbol (name
, block
, domain
, theclass
);
4530 /* Add a new symbol S to a block B. */
4533 add_symbol (struct symbol
*s
, struct symtab
*symtab
, struct block
*b
)
4535 symbol_set_symtab (s
, symtab
);
4536 dict_add_symbol (BLOCK_DICT (b
), s
);
4539 /* Add a new block B to a symtab S. */
4542 add_block (struct block
*b
, struct symtab
*s
)
4544 /* Cast away "const", but that's ok because we're building the
4545 symtab and blockvector here. */
4546 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4548 bv
= (struct blockvector
*) xrealloc ((void *) bv
,
4549 (sizeof (struct blockvector
)
4550 + BLOCKVECTOR_NBLOCKS (bv
)
4551 * sizeof (bv
->block
)));
4552 if (bv
!= SYMTAB_BLOCKVECTOR (s
))
4553 SYMTAB_BLOCKVECTOR (s
) = bv
;
4555 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
4558 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4559 MIPS' linenumber encoding might need more than one byte
4560 to describe it, LAST is used to detect these continuation lines.
4562 Combining lines with the same line number seems like a bad idea.
4563 E.g: There could be a line number entry with the same line number after the
4564 prologue and GDB should not ignore it (this is a better way to find
4565 a prologue than mips_skip_prologue).
4566 But due to the compressed line table format there are line number entries
4567 for the same line which are needed to bridge the gap to the next
4568 line number entry. These entries have a bogus address info with them
4569 and we are unable to tell them from intended duplicate line number
4571 This is another reason why -ggdb debugging format is preferable. */
4574 add_line (struct linetable
*lt
, int lineno
, CORE_ADDR adr
, int last
)
4576 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4577 Change them to something sensible. */
4581 last
= -2; /* Make sure we record first line. */
4583 if (last
== lineno
) /* Skip continuation lines. */
4586 lt
->item
[lt
->nitems
].line
= lineno
;
4587 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
4591 /* Sorting and reordering procedures. */
4593 /* Blocks with a smaller low bound should come first. */
4596 compare_blocks (const void *arg1
, const void *arg2
)
4599 struct block
**b1
= (struct block
**) arg1
;
4600 struct block
**b2
= (struct block
**) arg2
;
4602 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
4604 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
4608 /* Sort the blocks of a symtab S.
4609 Reorder the blocks in the blockvector by code-address,
4610 as required by some MI search routines. */
4613 sort_blocks (struct symtab
*s
)
4615 /* We have to cast away const here, but this is ok because we're
4616 constructing the blockvector in this code. */
4617 struct blockvector
*bv
= (struct blockvector
*) SYMTAB_BLOCKVECTOR (s
);
4619 if (BLOCKVECTOR_NBLOCKS (bv
) <= FIRST_LOCAL_BLOCK
)
4622 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
4623 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
4624 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
4625 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
4629 * This is very unfortunate: normally all functions are compiled in
4630 * the order they are found, but if the file is compiled -O3 things
4631 * are very different. It would be nice to find a reliable test
4632 * to detect -O3 images in advance.
4634 if (BLOCKVECTOR_NBLOCKS (bv
) > FIRST_LOCAL_BLOCK
+ 1)
4635 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
4636 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
4637 sizeof (struct block
*),
4642 int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
4644 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
4645 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
4646 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
4647 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
4650 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
4651 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
4653 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4654 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4655 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4656 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
4660 /* Constructor/restructor/destructor procedures. */
4662 /* Allocate a new symtab for NAME. Needs an estimate of how many
4663 linenumbers MAXLINES we'll put in it. */
4665 static struct compunit_symtab
*
4666 new_symtab (const char *name
, int maxlines
, struct objfile
*objfile
)
4668 struct compunit_symtab
*cust
= allocate_compunit_symtab (objfile
, name
);
4669 struct symtab
*symtab
;
4670 struct blockvector
*bv
;
4673 add_compunit_symtab_to_objfile (cust
);
4674 symtab
= allocate_symtab (cust
, name
);
4676 SYMTAB_LINETABLE (symtab
) = new_linetable (maxlines
);
4677 lang
= compunit_language (cust
);
4679 /* All symtabs must have at least two blocks. */
4681 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4682 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = new_block (NON_FUNCTION_BLOCK
, lang
);
4683 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
4684 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
4685 COMPUNIT_BLOCKVECTOR (cust
) = bv
;
4687 COMPUNIT_DEBUGFORMAT (cust
) = "ECOFF";
4691 /* Allocate a new partial_symtab NAME. */
4693 static struct partial_symtab
*
4694 new_psymtab (const char *name
, struct objfile
*objfile
)
4696 struct partial_symtab
*psymtab
;
4698 psymtab
= allocate_psymtab (name
, objfile
);
4700 /* Keep a backpointer to the file's symbols. */
4702 psymtab
->read_symtab_private
4703 = OBSTACK_ZALLOC (&objfile
->objfile_obstack
, symloc
);
4704 CUR_BFD (psymtab
) = cur_bfd
;
4705 DEBUG_SWAP (psymtab
) = debug_swap
;
4706 DEBUG_INFO (psymtab
) = debug_info
;
4707 PENDING_LIST (psymtab
) = pending_list
;
4709 /* The way to turn this into a symtab is to call... */
4710 psymtab
->read_symtab
= mdebug_read_symtab
;
4715 /* Allocate a linetable array of the given SIZE. Since the struct
4716 already includes one item, we subtract one when calculating the
4717 proper size to allocate. */
4719 static struct linetable
*
4720 new_linetable (int size
)
4722 struct linetable
*l
;
4726 size
= size
* sizeof (l
->item
) + sizeof (struct linetable
);
4727 l
= (struct linetable
*) xmalloc (size
);
4732 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4733 I am not so sure about the 3.4 ones.
4735 Since the struct linetable already includes one item, we subtract one when
4736 calculating the proper size to allocate. */
4738 static struct linetable
*
4739 shrink_linetable (struct linetable
*lt
)
4741 return (struct linetable
*) xrealloc ((void *) lt
,
4742 (sizeof (struct linetable
)
4744 * sizeof (lt
->item
))));
4747 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4749 static struct blockvector
*
4750 new_bvect (int nblocks
)
4752 struct blockvector
*bv
;
4755 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4756 bv
= (struct blockvector
*) xzalloc (size
);
4758 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4763 /* Allocate and zero a new block of language LANGUAGE, and set its
4764 BLOCK_DICT. If function is non-zero, assume the block is
4765 associated to a function, and make sure that the symbols are stored
4766 linearly; otherwise, store them hashed. */
4768 static struct block
*
4769 new_block (enum block_type type
, enum language language
)
4771 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4772 allocate the block. Which, in turn, suggests that the block
4773 should be allocated on an obstack. */
4774 struct block
*retval
= XCNEW (struct block
);
4776 if (type
== FUNCTION_BLOCK
)
4777 BLOCK_DICT (retval
) = dict_create_linear_expandable (language
);
4779 BLOCK_DICT (retval
) = dict_create_hashed_expandable (language
);
4784 /* Create a new symbol with printname NAME. */
4786 static struct symbol
*
4787 new_symbol (const char *name
)
4789 struct symbol
*s
= allocate_symbol (mdebugread_objfile
);
4791 SYMBOL_SET_LANGUAGE (s
, psymtab_language
,
4792 &mdebugread_objfile
->objfile_obstack
);
4793 SYMBOL_SET_NAMES (s
, name
, strlen (name
), 1, mdebugread_objfile
);
4797 /* Create a new type with printname NAME. */
4799 static struct type
*
4800 new_type (char *name
)
4804 t
= alloc_type (mdebugread_objfile
);
4805 TYPE_NAME (t
) = name
;
4806 INIT_CPLUS_SPECIFIC (t
);
4810 /* Read ECOFF debugging information from a BFD section. This is
4811 called from elfread.c. It parses the section into a
4812 ecoff_debug_info struct, and then lets the rest of the file handle
4816 elfmdebug_build_psymtabs (struct objfile
*objfile
,
4817 const struct ecoff_debug_swap
*swap
, asection
*sec
)
4819 bfd
*abfd
= objfile
->obfd
;
4820 struct ecoff_debug_info
*info
;
4822 /* FIXME: It's not clear whether we should be getting minimal symbol
4823 information from .mdebug in an ELF file, or whether we will.
4824 Re-initialize the minimal symbol reader in case we do. */
4826 minimal_symbol_reader
reader (objfile
);
4828 info
= XOBNEW (&objfile
->objfile_obstack
, ecoff_debug_info
);
4830 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4831 error (_("Error reading ECOFF debugging information: %s"),
4832 bfd_errmsg (bfd_get_error ()));
4834 mdebug_build_psymtabs (reader
, objfile
, swap
, info
);
4840 _initialize_mdebugread (void)
4842 basic_type_data
= register_objfile_data ();
4844 mdebug_register_index
4845 = register_symbol_register_impl (LOC_REGISTER
, &mdebug_register_funcs
);
4846 mdebug_regparm_index
4847 = register_symbol_register_impl (LOC_REGPARM_ADDR
, &mdebug_register_funcs
);