1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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. */
50 #include "stabsread.h"
51 #include "complaints.h"
54 /* These are needed if the tm.h file does not contain the necessary
55 mips specific definitions. */
57 #ifndef MIPS_EFI_SYMBOL_NAME
58 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
60 #include "coff/symconst.h"
61 typedef struct mips_extra_func_info
{
64 } *mips_extra_func_info_t
;
71 #include <sys/types.h>
74 #include <sys/param.h>
77 #include "gdb_string.h"
79 #include "gdb-stabs.h"
83 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
85 #include "libaout.h" /* Private BFD a.out information. */
86 #include "aout/aout64.h"
87 #include "aout/stab_gnu.h" /* STABS information */
89 #include "expression.h"
90 #include "language.h" /* Needed inside partial-stab.h */
92 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
93 #ifndef ECOFF_REG_TO_REGNUM
94 #define ECOFF_REG_TO_REGNUM(num) (num)
97 /* We put a pointer to this structure in the read_symtab_private field
102 /* Index of the FDR that this psymtab represents. */
104 /* The BFD that the psymtab was created from. */
106 const struct ecoff_debug_swap
*debug_swap
;
107 struct ecoff_debug_info
*debug_info
;
108 struct mdebug_pending
**pending_list
;
109 /* Pointer to external symbols for this file. */
111 /* Size of extern_tab. */
113 enum language pst_language
;
116 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
117 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
118 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
119 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
120 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
121 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
123 /* Things we import explicitly from other modules */
125 extern int info_verbose
;
127 /* Various complaints about symbol reading that don't abort the process */
129 static struct complaint bad_file_number_complaint
=
130 {"bad file number %d", 0, 0};
132 static struct complaint index_complaint
=
133 {"bad aux index at symbol %s", 0, 0};
135 static struct complaint aux_index_complaint
=
136 {"bad proc end in aux found from symbol %s", 0, 0};
138 static struct complaint block_index_complaint
=
139 {"bad aux index at block symbol %s", 0, 0};
141 static struct complaint unknown_ext_complaint
=
142 {"unknown external symbol %s", 0, 0};
144 static struct complaint unknown_sym_complaint
=
145 {"unknown local symbol %s", 0, 0};
147 static struct complaint unknown_st_complaint
=
148 {"with type %d", 0, 0};
150 static struct complaint block_overflow_complaint
=
151 {"block containing %s overfilled", 0, 0};
153 static struct complaint basic_type_complaint
=
154 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
156 static struct complaint unknown_type_qual_complaint
=
157 {"unknown type qualifier 0x%x", 0, 0};
159 static struct complaint array_index_type_complaint
=
160 {"illegal array index type for %s, assuming int", 0, 0};
162 static struct complaint bad_tag_guess_complaint
=
163 {"guessed tag type of %s incorrectly", 0, 0};
165 static struct complaint block_member_complaint
=
166 {"declaration block contains unhandled symbol type %d", 0, 0};
168 static struct complaint stEnd_complaint
=
169 {"stEnd with storage class %d not handled", 0, 0};
171 static struct complaint unknown_mdebug_symtype_complaint
=
172 {"unknown symbol type 0x%x", 0, 0};
174 static struct complaint stab_unknown_complaint
=
175 {"unknown stabs symbol %s", 0, 0};
177 static struct complaint pdr_for_nonsymbol_complaint
=
178 {"PDR for %s, but no symbol", 0, 0};
180 static struct complaint pdr_static_symbol_complaint
=
181 {"can't handle PDR for static proc at 0x%lx", 0, 0};
183 static struct complaint bad_setjmp_pdr_complaint
=
184 {"fixing bad setjmp PDR from libc", 0, 0};
186 static struct complaint bad_fbitfield_complaint
=
187 {"can't handle TIR fBitfield for %s", 0, 0};
189 static struct complaint bad_continued_complaint
=
190 {"illegal TIR continued for %s", 0, 0};
192 static struct complaint bad_rfd_entry_complaint
=
193 {"bad rfd entry for %s: file %d, index %d", 0, 0};
195 static struct complaint unexpected_type_code_complaint
=
196 {"unexpected type code for %s", 0, 0};
198 static struct complaint unable_to_cross_ref_complaint
=
199 {"unable to cross ref btTypedef for %s", 0, 0};
201 static struct complaint bad_indirect_xref_complaint
=
202 {"unable to cross ref btIndirect for %s", 0, 0};
204 static struct complaint illegal_forward_tq0_complaint
=
205 {"illegal tq0 in forward typedef for %s", 0, 0};
207 static struct complaint illegal_forward_bt_complaint
=
208 {"illegal bt %d in forward typedef for %s", 0, 0};
210 static struct complaint bad_linetable_guess_complaint
=
211 {"guessed size of linetable for %s incorrectly", 0, 0};
213 static struct complaint bad_ext_ifd_complaint
=
214 {"bad ifd for external symbol: %d (max %d)", 0, 0};
216 static struct complaint bad_ext_iss_complaint
=
217 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
219 /* Macros and extra defs */
221 /* Puns: hard to find whether -g was used and how */
223 #define MIN_GLEVEL GLEVEL_0
224 #define compare_glevel(a,b) \
225 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
226 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
228 /* Things that really are local to this module */
230 /* Remember what we deduced to be the source language of this psymtab. */
232 static enum language psymtab_language
= language_unknown
;
238 /* How to parse debugging information for CUR_BFD. */
240 static const struct ecoff_debug_swap
*debug_swap
;
242 /* Pointers to debugging information for CUR_BFD. */
244 static struct ecoff_debug_info
*debug_info
;
246 /* Pointer to current file decriptor record, and its index */
251 /* Index of current symbol */
255 /* Note how much "debuggable" this image is. We would like
256 to see at least one FDR with full symbols */
261 /* When examining .o files, report on undefined symbols */
263 static int n_undef_symbols
, n_undef_labels
, n_undef_vars
, n_undef_procs
;
265 /* Pseudo symbol to use when putting stabs into the symbol table. */
267 static char stabs_symbol
[] = STABS_SYMBOL
;
269 /* Types corresponding to mdebug format bt* basic types. */
271 static struct type
*mdebug_type_void
;
272 static struct type
*mdebug_type_char
;
273 static struct type
*mdebug_type_short
;
274 static struct type
*mdebug_type_int_32
;
275 #define mdebug_type_int mdebug_type_int_32
276 static struct type
*mdebug_type_int_64
;
277 static struct type
*mdebug_type_long_32
;
278 static struct type
*mdebug_type_long_64
;
279 static struct type
*mdebug_type_long_long_64
;
280 static struct type
*mdebug_type_unsigned_char
;
281 static struct type
*mdebug_type_unsigned_short
;
282 static struct type
*mdebug_type_unsigned_int_32
;
283 static struct type
*mdebug_type_unsigned_int_64
;
284 static struct type
*mdebug_type_unsigned_long_32
;
285 static struct type
*mdebug_type_unsigned_long_64
;
286 static struct type
*mdebug_type_unsigned_long_long_64
;
287 static struct type
*mdebug_type_adr_32
;
288 static struct type
*mdebug_type_adr_64
;
289 static struct type
*mdebug_type_float
;
290 static struct type
*mdebug_type_double
;
291 static struct type
*mdebug_type_complex
;
292 static struct type
*mdebug_type_double_complex
;
293 static struct type
*mdebug_type_fixed_dec
;
294 static struct type
*mdebug_type_float_dec
;
295 static struct type
*mdebug_type_string
;
297 /* Types for symbols from files compiled without debugging info. */
299 static struct type
*nodebug_func_symbol_type
;
300 static struct type
*nodebug_var_symbol_type
;
302 /* Nonzero if we have seen ecoff debugging info for a file. */
304 static int found_ecoff_debugging_info
;
306 /* Forward declarations */
309 upgrade_type
PARAMS ((int, struct type
**, int, union aux_ext
*, int, char *));
312 parse_partial_symbols
PARAMS ((struct objfile
*,
313 struct section_offsets
*));
316 *get_rfd
PARAMS ((int, int));
319 has_opaque_xref
PARAMS ((FDR
*, SYMR
*));
322 cross_ref
PARAMS ((int, union aux_ext
*, struct type
**, enum type_code
,
323 char **, int, char *));
325 static struct symbol
*
326 new_symbol
PARAMS ((char *));
329 new_type
PARAMS ((char *));
331 static struct block
*
332 new_block
PARAMS ((int));
334 static struct symtab
*
335 new_symtab
PARAMS ((char *, int, int, struct objfile
*));
337 static struct linetable
*
338 new_linetable
PARAMS ((int));
340 static struct blockvector
*
341 new_bvect
PARAMS ((int));
344 parse_symbol
PARAMS ((SYMR
*, union aux_ext
*, char *, int, struct section_offsets
*));
347 parse_type
PARAMS ((int, union aux_ext
*, unsigned int, int *, int, char *));
349 static struct symbol
*
350 mylookup_symbol
PARAMS ((char *, struct block
*, namespace_enum
,
351 enum address_class
));
353 static struct block
*
354 shrink_block
PARAMS ((struct block
*, struct symtab
*));
357 xzalloc
PARAMS ((unsigned int));
360 sort_blocks
PARAMS ((struct symtab
*));
363 compare_blocks
PARAMS ((const void *, const void *));
365 static struct partial_symtab
*
366 new_psymtab
PARAMS ((char *, struct objfile
*, struct section_offsets
*));
369 psymtab_to_symtab_1
PARAMS ((struct partial_symtab
*, char *));
372 add_block
PARAMS ((struct block
*, struct symtab
*));
375 add_symbol
PARAMS ((struct symbol
*, struct block
*));
378 add_line
PARAMS ((struct linetable
*, int, CORE_ADDR
, int));
380 static struct linetable
*
381 shrink_linetable
PARAMS ((struct linetable
*));
384 handle_psymbol_enumerators
PARAMS ((struct objfile
*, FDR
*, int, CORE_ADDR
));
387 mdebug_next_symbol_text
PARAMS ((struct objfile
*));
389 /* Address bounds for the signal trampoline in inferior, if any */
391 CORE_ADDR sigtramp_address
, sigtramp_end
;
393 /* Allocate zeroed memory */
399 PTR p
= xmalloc (size
);
405 /* Exported procedure: Builds a symtab from the PST partial one.
406 Restores the environment in effect when PST was created, delegates
407 most of the work to an ancillary procedure, and sorts
408 and reorders the symtab list at the end */
411 mdebug_psymtab_to_symtab (pst
)
412 struct partial_symtab
*pst
;
420 printf_filtered ("Reading in symbols for %s...", pst
->filename
);
421 gdb_flush (gdb_stdout
);
424 next_symbol_text_func
= mdebug_next_symbol_text
;
426 psymtab_to_symtab_1 (pst
, pst
->filename
);
428 /* Match with global symbols. This only needs to be done once,
429 after all of the symtabs and dependencies have been read in. */
430 scan_file_globals (pst
->objfile
);
433 printf_filtered ("done.\n");
436 /* File-level interface functions */
438 /* Find a file descriptor given its index RF relative to a file CF */
448 fdrs
= debug_info
->fdr
;
450 /* Object files do not have the RFD table, all refs are absolute */
453 (*debug_swap
->swap_rfd_in
) (cur_bfd
,
454 ((char *) debug_info
->external_rfd
456 * debug_swap
->external_rfd_size
)),
461 /* Return a safer print NAME for a file descriptor */
468 return "<stripped file>";
471 return debug_info
->ss
+ f
->issBase
+ f
->rss
;
475 /* Read in and parse the symtab of the file OBJFILE. Symbols from
476 different sections are relocated via the SECTION_OFFSETS. */
479 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
)
480 struct objfile
*objfile
;
481 const struct ecoff_debug_swap
*swap
;
482 struct ecoff_debug_info
*info
;
483 struct section_offsets
*section_offsets
;
485 cur_bfd
= objfile
->obfd
;
489 /* Make sure all the FDR information is swapped in. */
490 if (info
->fdr
== (FDR
*) NULL
)
496 info
->fdr
= (FDR
*) obstack_alloc (&objfile
->psymbol_obstack
,
497 (info
->symbolic_header
.ifdMax
499 fdr_src
= info
->external_fdr
;
501 + info
->symbolic_header
.ifdMax
* swap
->external_fdr_size
);
503 for (; fdr_src
< fdr_end
; fdr_src
+= swap
->external_fdr_size
, fdr_ptr
++)
504 (*swap
->swap_fdr_in
) (objfile
->obfd
, fdr_src
, fdr_ptr
);
507 parse_partial_symbols (objfile
, section_offsets
);
510 /* Check to make sure file was compiled with -g. If not, warn the
511 user of this limitation. */
512 if (compare_glevel (max_glevel
, GLEVEL_2
) < 0)
514 if (max_gdbinfo
== 0)
515 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
517 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
518 gdb_flush (gdb_stdout
);
523 /* Local utilities */
525 /* Map of FDR indexes to partial symtabs */
529 struct partial_symtab
*pst
; /* the psymtab proper */
530 long n_globals
; /* exported globals (external symbols) */
531 long globals_offset
; /* cumulative */
535 /* Utility stack, used to nest procedures and blocks properly.
536 It is a doubly linked list, to avoid too many alloc/free.
537 Since we might need it quite a few times it is NOT deallocated
540 static struct parse_stack
542 struct parse_stack
*next
, *prev
;
543 struct symtab
*cur_st
; /* Current symtab. */
544 struct block
*cur_block
; /* Block in it. */
546 /* What are we parsing. stFile, or stBlock are for files and
547 blocks. stProc or stStaticProc means we have seen the start of a
548 procedure, but not the start of the block within in. When we see
549 the start of that block, we change it to stNil, without pushing a
550 new block, i.e. stNil means both a procedure and a block. */
554 int maxsyms
; /* Max symbols in this block. */
555 struct type
*cur_type
; /* Type we parse fields for. */
556 int cur_field
; /* Field number in cur_type. */
557 CORE_ADDR procadr
; /* Start addres of this procedure */
558 int numargs
; /* Its argument count */
561 *top_stack
; /* Top stack ptr */
564 /* Enter a new lexical context */
569 struct parse_stack
*new;
571 /* Reuse frames if possible */
572 if (top_stack
&& top_stack
->prev
)
573 new = top_stack
->prev
;
575 new = (struct parse_stack
*) xzalloc (sizeof (struct parse_stack
));
576 /* Initialize new frame with previous content */
579 register struct parse_stack
*prev
= new->prev
;
582 top_stack
->prev
= new;
584 new->next
= top_stack
;
589 /* Exit a lexical context */
597 top_stack
= top_stack
->next
;
601 /* Cross-references might be to things we haven't looked at
602 yet, e.g. type references. To avoid too many type
603 duplications we keep a quick fixup table, an array
604 of lists of references indexed by file descriptor */
606 struct mdebug_pending
608 struct mdebug_pending
*next
; /* link */
609 char *s
; /* the unswapped symbol */
610 struct type
*t
; /* its partial type descriptor */
614 /* The pending information is kept for an entire object file, and used
615 to be in the sym_private field. I took it out when I split
616 mdebugread from mipsread, because this might not be the only type
617 of symbols read from an object file. Instead, we allocate the
618 pending information table when we create the partial symbols, and
619 we store a pointer to the single table in each psymtab. */
621 static struct mdebug_pending
**pending_list
;
623 /* Check whether we already saw symbol SH in file FH */
625 static struct mdebug_pending
*
626 is_pending_symbol (fh
, sh
)
630 int f_idx
= fh
- debug_info
->fdr
;
631 register struct mdebug_pending
*p
;
633 /* Linear search is ok, list is typically no more than 10 deep */
634 for (p
= pending_list
[f_idx
]; p
; p
= p
->next
)
640 /* Add a new symbol SH of type T */
643 add_pending (fh
, sh
, t
)
648 int f_idx
= fh
- debug_info
->fdr
;
649 struct mdebug_pending
*p
= is_pending_symbol (fh
, sh
);
651 /* Make sure we do not make duplicates */
654 p
= ((struct mdebug_pending
*)
655 obstack_alloc (¤t_objfile
->psymbol_obstack
,
656 sizeof (struct mdebug_pending
)));
659 p
->next
= pending_list
[f_idx
];
660 pending_list
[f_idx
] = p
;
665 /* Parsing Routines proper. */
667 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
668 For blocks, procedures and types we open a new lexical context.
669 This is basically just a big switch on the symbol's type. Argument
670 AX is the base pointer of aux symbols for this file (fh->iauxBase).
671 EXT_SH points to the unswapped symbol, which is needed for struct,
672 union, etc., types; it is NULL for an EXTR. BIGEND says whether
673 aux symbols are big-endian or little-endian. Return count of
674 SYMR's handled (normally one). */
677 parse_symbol (sh
, ax
, ext_sh
, bigend
, section_offsets
)
682 struct section_offsets
*section_offsets
;
684 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
685 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*)) =
686 debug_swap
->swap_sym_in
;
690 struct mdebug_pending
*pend
;
694 enum address_class
class;
696 long svalue
= sh
->value
;
699 if (ext_sh
== (char *) NULL
)
700 name
= debug_info
->ssext
+ sh
->iss
;
702 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
->iss
;
707 /* Do not relocate relative values.
708 The value of a stEnd symbol is the displacement from the
709 corresponding start symbol value.
710 The value of a stBlock symbol is the displacement from the
711 procedure address. */
712 if (sh
->st
!= stEnd
&& sh
->st
!= stBlock
)
713 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
720 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
724 sh
->value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
733 case stGlobal
: /* external symbol, goes into global block */
735 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
737 s
= new_symbol (name
);
738 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
741 case stStatic
: /* static data, goes into current block. */
743 b
= top_stack
->cur_block
;
744 s
= new_symbol (name
);
745 if (sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
747 /* It is a FORTRAN common block. At least for SGI Fortran the
748 address is not in the symbol; we need to fix it later in
749 scan_file_globals. */
750 int bucket
= hashname (SYMBOL_NAME (s
));
751 SYMBOL_VALUE_CHAIN (s
) = global_sym_chain
[bucket
];
752 global_sym_chain
[bucket
] = s
;
755 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
758 case stLocal
: /* local variable, goes into current block */
759 if (sh
->sc
== scRegister
)
761 class = LOC_REGISTER
;
762 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
766 b
= top_stack
->cur_block
;
767 s
= new_symbol (name
);
768 SYMBOL_VALUE (s
) = svalue
;
770 data
: /* Common code for symbols describing data */
771 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
772 SYMBOL_CLASS (s
) = class;
775 /* Type could be missing if file is compiled without debugging info. */
776 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
|| sh
->index
== indexNil
)
777 SYMBOL_TYPE (s
) = nodebug_var_symbol_type
;
779 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
780 /* Value of a data symbol is its memory address */
783 case stParam
: /* arg to procedure, goes into current block */
785 found_ecoff_debugging_info
= 1;
786 top_stack
->numargs
++;
788 /* Special GNU C++ name. */
789 if (is_cplus_marker (name
[0]) && name
[1] == 't' && name
[2] == 0)
790 name
= "this"; /* FIXME, not alloc'd in obstack */
791 s
= new_symbol (name
);
793 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
797 /* Pass by value in register. */
798 SYMBOL_CLASS(s
) = LOC_REGPARM
;
799 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
802 /* Pass by reference on stack. */
803 SYMBOL_CLASS(s
) = LOC_REF_ARG
;
806 /* Pass by reference in register. */
807 SYMBOL_CLASS(s
) = LOC_REGPARM_ADDR
;
808 svalue
= ECOFF_REG_TO_REGNUM (svalue
);
811 /* Pass by value on stack. */
812 SYMBOL_CLASS(s
) = LOC_ARG
;
815 SYMBOL_VALUE (s
) = svalue
;
816 SYMBOL_TYPE (s
) = parse_type (cur_fd
, ax
, sh
->index
, 0, bigend
, name
);
817 add_symbol (s
, top_stack
->cur_block
);
820 case stLabel
: /* label, goes into current block */
821 s
= new_symbol (name
);
822 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
; /* so that it can be used */
823 SYMBOL_CLASS (s
) = LOC_LABEL
; /* but not misused */
824 SYMBOL_VALUE_ADDRESS (s
) = (CORE_ADDR
) sh
->value
;
825 SYMBOL_TYPE (s
) = mdebug_type_int
;
826 add_symbol (s
, top_stack
->cur_block
);
829 case stProc
: /* Procedure, usually goes into global block */
830 case stStaticProc
: /* Static procedure, goes into current block */
831 s
= new_symbol (name
);
832 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
833 SYMBOL_CLASS (s
) = LOC_BLOCK
;
834 /* Type of the return value */
835 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
839 t
= parse_type (cur_fd
, ax
, sh
->index
+ 1, 0, bigend
, name
);
840 if (STREQ(name
, "malloc") && t
->code
== TYPE_CODE_VOID
)
842 /* I don't know why, but, at least under Linux/Alpha,
843 when linking against a malloc without debugging
844 symbols, its read as a function returning void---this
845 is bad because it means we cannot call functions with
846 string arguments interactively; i.e., "call
847 printf("howdy\n")" would fail with the error message
848 "program has no memory available". To avoid this, we
849 patch up the type and make it void*
850 instead. (davidm@azstarnet.com)
855 b
= top_stack
->cur_block
;
856 if (sh
->st
== stProc
)
858 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
859 /* The next test should normally be true, but provides a
860 hook for nested functions (which we don't want to make
862 if (b
== BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
))
863 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
864 /* Irix 5 sometimes has duplicate names for the same
865 function. We want to add such names up at the global
866 level, not as a nested function. */
867 else if (sh
->value
== top_stack
->procadr
)
868 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
872 /* Make a type for the procedure itself */
873 SYMBOL_TYPE (s
) = lookup_function_type (t
);
875 /* Create and enter a new lexical context */
876 b
= new_block (top_stack
->maxsyms
);
877 SYMBOL_BLOCK_VALUE (s
) = b
;
878 BLOCK_FUNCTION (b
) = s
;
879 BLOCK_START (b
) = BLOCK_END (b
) = sh
->value
;
880 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
881 add_block (b
, top_stack
->cur_st
);
883 /* Not if we only have partial info */
884 if (sh
->sc
== scUndefined
|| sh
->sc
== scNil
)
888 top_stack
->cur_block
= b
;
889 top_stack
->blocktype
= sh
->st
;
890 top_stack
->cur_type
= SYMBOL_TYPE (s
);
891 top_stack
->cur_field
= -1;
892 top_stack
->procadr
= sh
->value
;
893 top_stack
->numargs
= 0;
896 /* Beginning of code for structure, union, and enum definitions.
897 They all share a common set of local variables, defined here. */
899 enum type_code type_code
;
905 case stStruct
: /* Start a block defining a struct type */
906 type_code
= TYPE_CODE_STRUCT
;
907 goto structured_common
;
909 case stUnion
: /* Start a block defining a union type */
910 type_code
= TYPE_CODE_UNION
;
911 goto structured_common
;
913 case stEnum
: /* Start a block defining an enum type */
914 type_code
= TYPE_CODE_ENUM
;
915 goto structured_common
;
917 case stBlock
: /* Either a lexical block, or some type */
918 if (sh
->sc
!= scInfo
&& sh
->sc
!= scCommon
&& sh
->sc
!= scSCommon
)
919 goto case_stBlock_code
; /* Lexical block */
921 type_code
= TYPE_CODE_UNDEF
; /* We have a type. */
923 /* Common code for handling struct, union, enum, and/or as-yet-
924 unknown-type blocks of info about structured data. `type_code'
925 has been set to the proper TYPE_CODE, if we know it. */
927 found_ecoff_debugging_info
= 1;
929 top_stack
->blocktype
= stBlock
;
931 /* First count the number of fields and the highest value. */
934 for (ext_tsym
= ext_sh
+ external_sym_size
;
936 ext_tsym
+= external_sym_size
)
940 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
948 if (nfields
== 0 && type_code
== TYPE_CODE_UNDEF
)
949 /* If the type of the member is Nil (or Void),
950 without qualifiers, assume the tag is an
952 Alpha cc -migrate enums are recognized by a zero
953 index and a zero symbol value. */
954 if (tsym
.index
== indexNil
955 || (tsym
.index
== 0 && sh
->value
== 0))
956 type_code
= TYPE_CODE_ENUM
;
959 (*debug_swap
->swap_tir_in
) (bigend
,
960 &ax
[tsym
.index
].a_ti
,
962 if ((tir
.bt
== btNil
|| tir
.bt
== btVoid
)
964 type_code
= TYPE_CODE_ENUM
;
967 if (tsym
.value
> max_value
)
968 max_value
= tsym
.value
;
977 /* This is a no-op; is it trying to tell us something
978 we should be checking? */
979 if (tsym
.sc
== scVariant
); /*UNIMPLEMENTED*/
983 /* This is something like a struct within a
984 struct. Skip over the fields of the inner
985 struct. The -1 is because the for loop will
986 increment ext_tsym. */
987 ext_tsym
= ((char *) debug_info
->external_sym
988 + ((cur_fdr
->isymBase
+ tsym
.index
- 1)
989 * external_sym_size
));
995 /* mips cc puts out a typedef for struct x if it is not yet
996 defined when it encounters
997 struct y { struct x *xp; };
1002 /* Irix5 cc puts out a stIndirect for struct x if it is not
1003 yet defined when it encounters
1004 struct y { struct x *xp; };
1009 complain (&block_member_complaint
, tsym
.st
);
1014 /* In an stBlock, there is no way to distinguish structs,
1015 unions, and enums at this point. This is a bug in the
1016 original design (that has been fixed with the recent
1017 addition of the stStruct, stUnion, and stEnum symbol
1018 types.) The way you can tell is if/when you see a variable
1019 or field of that type. In that case the variable's type
1020 (in the AUX table) says if the type is struct, union, or
1021 enum, and points back to the stBlock here. So you can
1022 patch the tag kind up later - but only if there actually is
1023 a variable or field of that type.
1025 So until we know for sure, we will guess at this point.
1027 If the first member has index==indexNil or a void type,
1028 assume we have an enumeration.
1029 Otherwise, if there is more than one member, and all
1030 the members have offset 0, assume we have a union.
1031 Otherwise, assume we have a struct.
1033 The heuristic could guess wrong in the case of of an
1034 enumeration with no members or a union with one (or zero)
1035 members, or when all except the last field of a struct have
1036 width zero. These are uncommon and/or illegal situations,
1037 and in any case guessing wrong probably doesn't matter
1040 But if we later do find out we were wrong, we fixup the tag
1041 kind. Members of an enumeration must be handled
1042 differently from struct/union fields, and that is harder to
1043 patch up, but luckily we shouldn't need to. (If there are
1044 any enumeration members, we can tell for sure it's an enum
1047 if (type_code
== TYPE_CODE_UNDEF
)
1048 if (nfields
> 1 && max_value
== 0)
1049 type_code
= TYPE_CODE_UNION
;
1051 type_code
= TYPE_CODE_STRUCT
;
1053 /* Create a new type or use the pending type. */
1054 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1055 if (pend
== (struct mdebug_pending
*) NULL
)
1057 t
= new_type (NULL
);
1058 add_pending (cur_fdr
, ext_sh
, t
);
1063 /* Do not set the tag name if it is a compiler generated tag name
1064 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1065 Alpha cc puts out an sh->iss of zero for those. */
1066 if (sh
->iss
== 0 || name
[0] == '.' || name
[0] == '\0')
1067 TYPE_TAG_NAME (t
) = NULL
;
1069 TYPE_TAG_NAME (t
) = obconcat (¤t_objfile
->symbol_obstack
,
1072 TYPE_CODE (t
) = type_code
;
1073 TYPE_LENGTH (t
) = sh
->value
;
1074 TYPE_NFIELDS (t
) = nfields
;
1075 TYPE_FIELDS (t
) = f
= ((struct field
*)
1077 nfields
* sizeof (struct field
)));
1079 if (type_code
== TYPE_CODE_ENUM
)
1081 int unsigned_enum
= 1;
1083 /* This is a non-empty enum. */
1085 /* DEC c89 has the number of enumerators in the sh.value field,
1086 not the type length, so we have to compensate for that
1087 incompatibility quirk.
1088 This might do the wrong thing for an enum with one or two
1089 enumerators and gcc -gcoff -fshort-enums, but these cases
1090 are hopefully rare enough.
1091 Alpha cc -migrate has a sh.value field of zero, we adjust
1093 if (TYPE_LENGTH (t
) == TYPE_NFIELDS (t
)
1094 || TYPE_LENGTH (t
) == 0)
1095 TYPE_LENGTH (t
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
1096 for (ext_tsym
= ext_sh
+ external_sym_size
;
1098 ext_tsym
+= external_sym_size
)
1101 struct symbol
*enum_sym
;
1103 (*swap_sym_in
) (cur_bfd
, ext_tsym
, &tsym
);
1105 if (tsym
.st
!= stMember
)
1108 f
->bitpos
= tsym
.value
;
1110 f
->name
= debug_info
->ss
+ cur_fdr
->issBase
+ tsym
.iss
;
1113 enum_sym
= ((struct symbol
*)
1114 obstack_alloc (¤t_objfile
->symbol_obstack
,
1115 sizeof (struct symbol
)));
1116 memset ((PTR
) enum_sym
, 0, sizeof (struct symbol
));
1117 SYMBOL_NAME (enum_sym
) = f
->name
;
1118 SYMBOL_CLASS (enum_sym
) = LOC_CONST
;
1119 SYMBOL_TYPE (enum_sym
) = t
;
1120 SYMBOL_NAMESPACE (enum_sym
) = VAR_NAMESPACE
;
1121 SYMBOL_VALUE (enum_sym
) = tsym
.value
;
1122 if (SYMBOL_VALUE (enum_sym
) < 0)
1124 add_symbol (enum_sym
, top_stack
->cur_block
);
1126 /* Skip the stMembers that we've handled. */
1131 TYPE_FLAGS (t
) |= TYPE_FLAG_UNSIGNED
;
1133 /* make this the current type */
1134 top_stack
->cur_type
= t
;
1135 top_stack
->cur_field
= 0;
1137 /* Do not create a symbol for alpha cc unnamed structs. */
1141 /* gcc puts out an empty struct for an opaque struct definitions,
1142 do not create a symbol for it either. */
1143 if (TYPE_NFIELDS (t
) == 0)
1145 TYPE_FLAGS (t
) |= TYPE_FLAG_STUB
;
1149 s
= new_symbol (name
);
1150 SYMBOL_NAMESPACE (s
) = STRUCT_NAMESPACE
;
1151 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1152 SYMBOL_VALUE (s
) = 0;
1153 SYMBOL_TYPE (s
) = t
;
1154 add_symbol (s
, top_stack
->cur_block
);
1157 /* End of local variables shared by struct, union, enum, and
1158 block (as yet unknown struct/union/enum) processing. */
1162 found_ecoff_debugging_info
= 1;
1163 /* beginnning of (code) block. Value of symbol
1164 is the displacement from procedure start */
1165 push_parse_stack ();
1167 /* Do not start a new block if this is the outermost block of a
1168 procedure. This allows the LOC_BLOCK symbol to point to the
1169 block with the local variables, so funcname::var works. */
1170 if (top_stack
->blocktype
== stProc
1171 || top_stack
->blocktype
== stStaticProc
)
1173 top_stack
->blocktype
= stNil
;
1177 top_stack
->blocktype
= stBlock
;
1178 b
= new_block (top_stack
->maxsyms
);
1179 BLOCK_START (b
) = sh
->value
+ top_stack
->procadr
;
1180 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1181 top_stack
->cur_block
= b
;
1182 add_block (b
, top_stack
->cur_st
);
1185 case stEnd
: /* end (of anything) */
1186 if (sh
->sc
== scInfo
|| sh
->sc
== scCommon
|| sh
->sc
== scSCommon
)
1188 /* Finished with type */
1189 top_stack
->cur_type
= 0;
1191 else if (sh
->sc
== scText
&&
1192 (top_stack
->blocktype
== stProc
||
1193 top_stack
->blocktype
== stStaticProc
))
1195 /* Finished with procedure */
1196 struct blockvector
*bv
= BLOCKVECTOR (top_stack
->cur_st
);
1197 struct mips_extra_func_info
*e
;
1199 struct type
*ftype
= top_stack
->cur_type
;
1202 BLOCK_END (top_stack
->cur_block
) += sh
->value
; /* size */
1204 /* Make up special symbol to contain procedure specific info */
1205 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
1206 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
1207 SYMBOL_CLASS (s
) = LOC_CONST
;
1208 SYMBOL_TYPE (s
) = mdebug_type_void
;
1209 e
= ((struct mips_extra_func_info
*)
1210 obstack_alloc (¤t_objfile
->symbol_obstack
,
1211 sizeof (struct mips_extra_func_info
)));
1212 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
1213 SYMBOL_VALUE (s
) = (long) e
;
1214 e
->numargs
= top_stack
->numargs
;
1215 e
->pdr
.framereg
= -1;
1216 add_symbol (s
, top_stack
->cur_block
);
1218 /* Reallocate symbols, saving memory */
1219 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1221 /* f77 emits proc-level with address bounds==[0,0],
1222 So look for such child blocks, and patch them. */
1223 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
1225 struct block
*b_bad
= BLOCKVECTOR_BLOCK (bv
, i
);
1226 if (BLOCK_SUPERBLOCK (b_bad
) == b
1227 && BLOCK_START (b_bad
) == top_stack
->procadr
1228 && BLOCK_END (b_bad
) == top_stack
->procadr
)
1230 BLOCK_START (b_bad
) = BLOCK_START (b
);
1231 BLOCK_END (b_bad
) = BLOCK_END (b
);
1235 if (TYPE_NFIELDS (ftype
) <= 0)
1237 /* No parameter type information is recorded with the function's
1238 type. Set that from the type of the parameter symbols. */
1239 int nparams
= top_stack
->numargs
;
1245 TYPE_NFIELDS (ftype
) = nparams
;
1246 TYPE_FIELDS (ftype
) = (struct field
*)
1247 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
1249 for (i
= iparams
= 0; iparams
< nparams
; i
++)
1251 sym
= BLOCK_SYM (b
, i
);
1252 switch (SYMBOL_CLASS (sym
))
1257 case LOC_REGPARM_ADDR
:
1258 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
1268 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stBlock
)
1270 /* End of (code) block. The value of the symbol is the
1271 displacement from the procedure`s start address of the
1272 end of this block. */
1273 BLOCK_END (top_stack
->cur_block
) = sh
->value
+ top_stack
->procadr
;
1274 shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
1276 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stNil
)
1278 /* End of outermost block. Pop parse stack and ignore. The
1279 following stEnd of stProc will take care of the block. */
1282 else if (sh
->sc
== scText
&& top_stack
->blocktype
== stFile
)
1284 /* End of file. Pop parse stack and ignore. Higher
1285 level code deals with this. */
1289 complain (&stEnd_complaint
, sh
->sc
);
1291 pop_parse_stack (); /* restore previous lexical context */
1294 case stMember
: /* member of struct or union */
1295 f
= &TYPE_FIELDS (top_stack
->cur_type
)[top_stack
->cur_field
++];
1297 f
->bitpos
= sh
->value
;
1299 f
->type
= parse_type (cur_fd
, ax
, sh
->index
, &bitsize
, bigend
, name
);
1300 f
->bitsize
= bitsize
;
1303 case stIndirect
: /* forward declaration on Irix5 */
1304 /* Forward declarations from Irix5 cc are handled by cross_ref,
1308 case stTypedef
: /* type definition */
1309 found_ecoff_debugging_info
= 1;
1311 /* Typedefs for forward declarations and opaque structs from alpha cc
1312 are handled by cross_ref, skip them. */
1316 /* Parse the type or use the pending type. */
1317 pend
= is_pending_symbol (cur_fdr
, ext_sh
);
1318 if (pend
== (struct mdebug_pending
*) NULL
)
1320 t
= parse_type (cur_fd
, ax
, sh
->index
, (int *)NULL
, bigend
, name
);
1321 add_pending (cur_fdr
, ext_sh
, t
);
1326 /* mips cc puts out a typedef with the name of the struct for forward
1327 declarations. These should not go into the symbol table and
1328 TYPE_NAME should not be set for them.
1329 They can't be distinguished from an intentional typedef to
1330 the same name however:
1332 struct x { int ix; int jx; };
1336 struct xx {int ixx; int jxx; };
1337 generates a cross referencing stTypedef for x and xx.
1338 The user visible effect of this is that the type of a pointer
1339 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1340 The problem is fixed with alpha cc and Irix5 cc. */
1342 /* However if the typedef cross references to an opaque aggregate, it
1343 is safe to omit it from the symbol table. */
1345 if (has_opaque_xref (cur_fdr
, sh
))
1347 s
= new_symbol (name
);
1348 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1349 SYMBOL_CLASS (s
) = LOC_TYPEDEF
;
1350 SYMBOL_BLOCK_VALUE (s
) = top_stack
->cur_block
;
1351 SYMBOL_TYPE (s
) = t
;
1352 add_symbol (s
, top_stack
->cur_block
);
1354 /* Incomplete definitions of structs should not get a name. */
1355 if (TYPE_NAME (SYMBOL_TYPE (s
)) == NULL
1356 && (TYPE_NFIELDS (SYMBOL_TYPE (s
)) != 0
1357 || (TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_STRUCT
1358 && TYPE_CODE (SYMBOL_TYPE (s
)) != TYPE_CODE_UNION
)))
1360 if (TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_PTR
1361 || TYPE_CODE (SYMBOL_TYPE (s
)) == TYPE_CODE_FUNC
)
1363 /* If we are giving a name to a type such as "pointer to
1364 foo" or "function returning foo", we better not set
1365 the TYPE_NAME. If the program contains "typedef char
1366 *caddr_t;", we don't want all variables of type char
1367 * to print as caddr_t. This is not just a
1368 consequence of GDB's type management; CC and GCC (at
1369 least through version 2.4) both output variables of
1370 either type char * or caddr_t with the type
1371 refering to the stTypedef symbol for caddr_t. If a future
1372 compiler cleans this up it GDB is not ready for it
1373 yet, but if it becomes ready we somehow need to
1374 disable this check (without breaking the PCC/GCC2.4
1379 Fortunately, this check seems not to be necessary
1380 for anything except pointers or functions. */
1383 TYPE_NAME (SYMBOL_TYPE (s
)) = SYMBOL_NAME (s
);
1387 case stFile
: /* file name */
1388 push_parse_stack ();
1389 top_stack
->blocktype
= sh
->st
;
1392 /* I`ve never seen these for C */
1394 break; /* register relocation */
1396 break; /* forwarding address */
1398 break; /* constant */
1400 complain (&unknown_mdebug_symtype_complaint
, sh
->st
);
1407 /* Parse the type information provided in the raw AX entries for
1408 the symbol SH. Return the bitfield size in BS, in case.
1409 We must byte-swap the AX entries before we use them; BIGEND says whether
1410 they are big-endian or little-endian (from fh->fBigendian). */
1412 static struct type
*
1413 parse_type (fd
, ax
, aux_index
, bs
, bigend
, sym_name
)
1416 unsigned int aux_index
;
1421 /* Null entries in this map are treated specially */
1422 static struct type
**map_bt
[] =
1424 &mdebug_type_void
, /* btNil */
1425 &mdebug_type_adr_32
, /* btAdr */
1426 &mdebug_type_char
, /* btChar */
1427 &mdebug_type_unsigned_char
, /* btUChar */
1428 &mdebug_type_short
, /* btShort */
1429 &mdebug_type_unsigned_short
, /* btUShort */
1430 &mdebug_type_int_32
, /* btInt */
1431 &mdebug_type_unsigned_int_32
, /* btUInt */
1432 &mdebug_type_long_32
, /* btLong */
1433 &mdebug_type_unsigned_long_32
, /* btULong */
1434 &mdebug_type_float
, /* btFloat */
1435 &mdebug_type_double
, /* btDouble */
1442 &mdebug_type_complex
, /* btComplex */
1443 &mdebug_type_double_complex
, /* btDComplex */
1445 &mdebug_type_fixed_dec
, /* btFixedDec */
1446 &mdebug_type_float_dec
, /* btFloatDec */
1447 &mdebug_type_string
, /* btString */
1450 &mdebug_type_void
, /* btVoid */
1451 0, /* DEC C++: Pointer to member */
1452 0, /* DEC C++: Virtual function table */
1453 0, /* DEC C++: Class (Record) */
1454 &mdebug_type_long_64
, /* btLong64 */
1455 &mdebug_type_unsigned_long_64
, /* btULong64 */
1456 &mdebug_type_long_long_64
, /* btLongLong64 */
1457 &mdebug_type_unsigned_long_long_64
, /* btULongLong64 */
1458 &mdebug_type_adr_64
, /* btAdr64 */
1459 &mdebug_type_int_64
, /* btInt64 */
1460 &mdebug_type_unsigned_int_64
, /* btUInt64 */
1464 struct type
*tp
= 0;
1465 enum type_code type_code
= TYPE_CODE_UNDEF
;
1467 /* Handle undefined types, they have indexNil. */
1468 if (aux_index
== indexNil
)
1469 return mdebug_type_int
;
1471 /* Handle corrupt aux indices. */
1472 if (aux_index
>= (debug_info
->fdr
+ fd
)->caux
)
1474 complain (&index_complaint
, sym_name
);
1475 return mdebug_type_int
;
1479 /* Use aux as a type information record, map its basic type. */
1480 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1481 if (t
->bt
>= (sizeof (map_bt
) / sizeof (*map_bt
)))
1483 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1484 return mdebug_type_int
;
1488 tp
= *map_bt
[t
->bt
];
1493 /* Cannot use builtin types -- build our own */
1497 type_code
= TYPE_CODE_STRUCT
;
1500 type_code
= TYPE_CODE_UNION
;
1503 type_code
= TYPE_CODE_ENUM
;
1506 type_code
= TYPE_CODE_RANGE
;
1509 type_code
= TYPE_CODE_SET
;
1512 /* alpha cc -migrate uses this for typedefs. The true type will
1513 be obtained by crossreferencing below. */
1514 type_code
= TYPE_CODE_ERROR
;
1517 /* alpha cc uses this for typedefs. The true type will be
1518 obtained by crossreferencing below. */
1519 type_code
= TYPE_CODE_ERROR
;
1522 complain (&basic_type_complaint
, t
->bt
, sym_name
);
1523 return mdebug_type_int
;
1527 /* Move on to next aux */
1532 int width
= AUX_GET_WIDTH (bigend
, ax
);
1534 /* Inhibit core dumps with some cfront generated objects that
1536 if (bs
== (int *)NULL
)
1538 /* Alpha cc -migrate encodes char and unsigned char types
1539 as short and unsigned short types with a field width of 8.
1540 Enum types also have a field width which we ignore for now. */
1541 if (t
->bt
== btShort
&& width
== 8)
1542 tp
= mdebug_type_char
;
1543 else if (t
->bt
== btUShort
&& width
== 8)
1544 tp
= mdebug_type_unsigned_char
;
1545 else if (t
->bt
== btEnum
)
1548 complain (&bad_fbitfield_complaint
, sym_name
);
1555 /* A btIndirect entry cross references to an aux entry containing
1557 if (t
->bt
== btIndirect
)
1564 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
1566 if (rn
->rfd
== 0xfff)
1568 rf
= AUX_GET_ISYM (bigend
, ax
);
1576 complain (&bad_indirect_xref_complaint
, sym_name
);
1577 return mdebug_type_int
;
1579 xref_fh
= get_rfd (fd
, rf
);
1580 xref_fd
= xref_fh
- debug_info
->fdr
;
1581 tp
= parse_type (xref_fd
, debug_info
->external_aux
+ xref_fh
->iauxBase
,
1582 rn
->index
, (int *) NULL
, xref_fh
->fBigendian
, sym_name
);
1585 /* All these types really point to some (common) MIPS type
1586 definition, and only the type-qualifiers fully identify
1587 them. We'll make the same effort at sharing. */
1588 if (t
->bt
== btStruct
||
1592 /* btSet (I think) implies that the name is a tag name, not a typedef
1593 name. This apparently is a MIPS extension for C sets. */
1598 /* Try to cross reference this type, build new type on failure. */
1599 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1600 if (tp
== (struct type
*) NULL
)
1601 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1603 /* DEC c89 produces cross references to qualified aggregate types,
1604 dereference them. */
1605 while (TYPE_CODE (tp
) == TYPE_CODE_PTR
1606 || TYPE_CODE (tp
) == TYPE_CODE_ARRAY
)
1607 tp
= tp
->target_type
;
1609 /* Make sure that TYPE_CODE(tp) has an expected type code.
1610 Any type may be returned from cross_ref if file indirect entries
1612 if (TYPE_CODE (tp
) != TYPE_CODE_STRUCT
1613 && TYPE_CODE (tp
) != TYPE_CODE_UNION
1614 && TYPE_CODE (tp
) != TYPE_CODE_ENUM
)
1616 complain (&unexpected_type_code_complaint
, sym_name
);
1621 /* Usually, TYPE_CODE(tp) is already type_code. The main
1622 exception is if we guessed wrong re struct/union/enum.
1623 But for struct vs. union a wrong guess is harmless, so
1624 don't complain(). */
1625 if ((TYPE_CODE (tp
) == TYPE_CODE_ENUM
1626 && type_code
!= TYPE_CODE_ENUM
)
1627 || (TYPE_CODE (tp
) != TYPE_CODE_ENUM
1628 && type_code
== TYPE_CODE_ENUM
))
1630 complain (&bad_tag_guess_complaint
, sym_name
);
1633 if (TYPE_CODE (tp
) != type_code
)
1635 TYPE_CODE (tp
) = type_code
;
1638 /* Do not set the tag name if it is a compiler generated tag name
1639 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1640 if (name
[0] == '.' || name
[0] == '\0')
1641 TYPE_TAG_NAME (tp
) = NULL
;
1642 else if (TYPE_TAG_NAME (tp
) == NULL
1643 || !STREQ (TYPE_TAG_NAME (tp
), name
))
1644 TYPE_TAG_NAME (tp
) = obsavestring (name
, strlen (name
),
1645 ¤t_objfile
->type_obstack
);
1649 /* All these types really point to some (common) MIPS type
1650 definition, and only the type-qualifiers fully identify
1651 them. We'll make the same effort at sharing.
1652 FIXME: We are not doing any guessing on range types. */
1653 if (t
->bt
== btRange
)
1657 /* Try to cross reference this type, build new type on failure. */
1658 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1659 if (tp
== (struct type
*) NULL
)
1660 tp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
1662 /* Make sure that TYPE_CODE(tp) has an expected type code.
1663 Any type may be returned from cross_ref if file indirect entries
1665 if (TYPE_CODE (tp
) != TYPE_CODE_RANGE
)
1667 complain (&unexpected_type_code_complaint
, sym_name
);
1671 /* Usually, TYPE_CODE(tp) is already type_code. The main
1672 exception is if we guessed wrong re struct/union/enum. */
1673 if (TYPE_CODE (tp
) != type_code
)
1675 complain (&bad_tag_guess_complaint
, sym_name
);
1676 TYPE_CODE (tp
) = type_code
;
1678 if (TYPE_NAME (tp
) == NULL
|| !STREQ (TYPE_NAME (tp
), name
))
1679 TYPE_NAME (tp
) = obsavestring (name
, strlen (name
),
1680 ¤t_objfile
->type_obstack
);
1683 if (t
->bt
== btTypedef
)
1687 /* Try to cross reference this type, it should succeed. */
1688 ax
+= cross_ref (fd
, ax
, &tp
, type_code
, &name
, bigend
, sym_name
);
1689 if (tp
== (struct type
*) NULL
)
1691 complain (&unable_to_cross_ref_complaint
, sym_name
);
1692 tp
= mdebug_type_int
;
1696 /* Deal with range types */
1697 if (t
->bt
== btRange
)
1699 TYPE_NFIELDS (tp
) = 2;
1700 TYPE_FIELDS (tp
) = ((struct field
*)
1701 TYPE_ALLOC (tp
, 2 * sizeof (struct field
)));
1702 TYPE_FIELD_NAME (tp
, 0) = obsavestring ("Low", strlen ("Low"),
1703 ¤t_objfile
->type_obstack
);
1704 TYPE_FIELD_BITPOS (tp
, 0) = AUX_GET_DNLOW (bigend
, ax
);
1706 TYPE_FIELD_NAME (tp
, 1) = obsavestring ("High", strlen ("High"),
1707 ¤t_objfile
->type_obstack
);
1708 TYPE_FIELD_BITPOS (tp
, 1) = AUX_GET_DNHIGH (bigend
, ax
);
1712 /* Parse all the type qualifiers now. If there are more
1713 than 6 the game will continue in the next aux */
1717 #define PARSE_TQ(tq) \
1718 if (t->tq != tqNil) \
1719 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1731 /* mips cc 2.x and gcc never put out continued aux entries. */
1735 (*debug_swap
->swap_tir_in
) (bigend
, &ax
->a_ti
, t
);
1739 /* Complain for illegal continuations due to corrupt aux entries. */
1741 complain (&bad_continued_complaint
, sym_name
);
1746 /* Make up a complex type from a basic one. Type is passed by
1747 reference in TPP and side-effected as necessary. The type
1748 qualifier TQ says how to handle the aux symbols at AX for
1749 the symbol SX we are currently analyzing. BIGEND says whether
1750 aux symbols are big-endian or little-endian.
1751 Returns the number of aux symbols we parsed. */
1754 upgrade_type (fd
, tpp
, tq
, ax
, bigend
, sym_name
)
1765 /* Used in array processing */
1776 t
= lookup_pointer_type (*tpp
);
1781 t
= lookup_function_type (*tpp
);
1788 /* Determine and record the domain type (type of index) */
1789 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, &rndx
);
1795 rf
= AUX_GET_ISYM (bigend
, ax
);
1798 fh
= get_rfd (fd
, rf
);
1800 indx
= parse_type (fh
- debug_info
->fdr
,
1801 debug_info
->external_aux
+ fh
->iauxBase
,
1802 id
, (int *) NULL
, bigend
, sym_name
);
1804 /* The bounds type should be an integer type, but might be anything
1805 else due to corrupt aux entries. */
1806 if (TYPE_CODE (indx
) != TYPE_CODE_INT
)
1808 complain (&array_index_type_complaint
, sym_name
);
1809 indx
= mdebug_type_int
;
1812 /* Get the bounds, and create the array type. */
1814 lower
= AUX_GET_DNLOW (bigend
, ax
);
1816 upper
= AUX_GET_DNHIGH (bigend
, ax
);
1818 rf
= AUX_GET_WIDTH (bigend
, ax
); /* bit size of array element */
1820 range
= create_range_type ((struct type
*) NULL
, indx
,
1823 t
= create_array_type ((struct type
*) NULL
, *tpp
, range
);
1825 /* We used to fill in the supplied array element bitsize
1826 here if the TYPE_LENGTH of the target type was zero.
1827 This happens for a `pointer to an array of anonymous structs',
1828 but in this case the array element bitsize is also zero,
1829 so nothing is gained.
1830 And we used to check the TYPE_LENGTH of the target type against
1831 the supplied array element bitsize.
1832 gcc causes a mismatch for `pointer to array of object',
1833 since the sdb directives it uses do not have a way of
1834 specifying the bitsize, but it does no harm (the
1835 TYPE_LENGTH should be correct) and we should be able to
1836 ignore the erroneous bitsize from the auxiliary entry safely.
1837 dbx seems to ignore it too. */
1839 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1841 if (TYPE_LENGTH (*tpp
) == 0)
1843 TYPE_FLAGS (t
) |= TYPE_FLAG_TARGET_STUB
;
1850 /* Volatile -- currently ignored */
1854 /* Const -- currently ignored */
1858 complain (&unknown_type_qual_complaint
, tq
);
1864 /* Parse a procedure descriptor record PR. Note that the procedure is
1865 parsed _after_ the local symbols, now we just insert the extra
1866 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1867 already been placed in the procedure's main block. Note also that
1868 images that have been partially stripped (ld -x) have been deprived
1869 of local symbols, and we have to cope with them here. FIRST_OFF is
1870 the offset of the first procedure for this FDR; we adjust the
1871 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1872 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1873 in question, or NULL to use top_stack->cur_block. */
1875 static void parse_procedure
PARAMS ((PDR
*, struct symtab
*, CORE_ADDR
,
1876 struct partial_symtab
*));
1879 parse_procedure (pr
, search_symtab
, lowest_pdr_addr
, pst
)
1881 struct symtab
*search_symtab
;
1882 CORE_ADDR lowest_pdr_addr
;
1883 struct partial_symtab
*pst
;
1885 struct symbol
*s
, *i
;
1887 struct mips_extra_func_info
*e
;
1890 /* Simple rule to find files linked "-x" */
1891 if (cur_fdr
->rss
== -1)
1895 /* Static procedure at address pr->adr. Sigh. */
1896 /* FIXME-32x64. assuming pr->adr fits in long. */
1897 complain (&pdr_static_symbol_complaint
, (unsigned long) pr
->adr
);
1905 (*debug_swap
->swap_ext_in
) (cur_bfd
,
1906 ((char *) debug_info
->external_ext
1908 * debug_swap
->external_ext_size
)),
1910 sh_name
= debug_info
->ssext
+ she
.asym
.iss
;
1918 (*debug_swap
->swap_sym_in
) (cur_bfd
,
1919 ((char *) debug_info
->external_sym
1920 + ((cur_fdr
->isymBase
+ pr
->isym
)
1921 * debug_swap
->external_sym_size
)),
1923 sh_name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
1926 if (search_symtab
!= NULL
)
1929 /* This loses both in the case mentioned (want a static, find a global),
1930 but also if we are looking up a non-mangled name which happens to
1931 match the name of a mangled function. */
1932 /* We have to save the cur_fdr across the call to lookup_symbol.
1933 If the pdr is for a static function and if a global function with
1934 the same name exists, lookup_symbol will eventually read in the symtab
1935 for the global function and clobber cur_fdr. */
1936 FDR
*save_cur_fdr
= cur_fdr
;
1937 s
= lookup_symbol (sh_name
, NULL
, VAR_NAMESPACE
, 0, NULL
);
1938 cur_fdr
= save_cur_fdr
;
1942 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab
), STATIC_BLOCK
),
1948 s
= mylookup_symbol (sh_name
, top_stack
->cur_block
,
1949 VAR_NAMESPACE
, LOC_BLOCK
);
1953 b
= SYMBOL_BLOCK_VALUE (s
);
1957 complain (&pdr_for_nonsymbol_complaint
, sh_name
);
1961 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1962 s
= new_symbol (sh_name
);
1963 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
1964 SYMBOL_CLASS (s
) = LOC_BLOCK
;
1965 /* Donno its type, hope int is ok */
1966 SYMBOL_TYPE (s
) = lookup_function_type (mdebug_type_int
);
1967 add_symbol (s
, top_stack
->cur_block
);
1968 /* Wont have symbols for this one */
1970 SYMBOL_BLOCK_VALUE (s
) = b
;
1971 BLOCK_FUNCTION (b
) = s
;
1972 BLOCK_START (b
) = pr
->adr
;
1973 /* BOUND used to be the end of procedure's text, but the
1974 argument is no longer passed in. */
1975 BLOCK_END (b
) = bound
;
1976 BLOCK_SUPERBLOCK (b
) = top_stack
->cur_block
;
1977 add_block (b
, top_stack
->cur_st
);
1981 i
= mylookup_symbol (MIPS_EFI_SYMBOL_NAME
, b
, LABEL_NAMESPACE
, LOC_CONST
);
1985 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (i
);
1987 e
->pdr
.isym
= (long) s
;
1988 e
->pdr
.adr
+= pst
->textlow
- lowest_pdr_addr
;
1990 /* Correct incorrect setjmp procedure descriptor from the library
1991 to make backtrace through setjmp work. */
1992 if (e
->pdr
.pcreg
== 0 && STREQ (sh_name
, "setjmp"))
1994 complain (&bad_setjmp_pdr_complaint
, 0);
1995 e
->pdr
.pcreg
= RA_REGNUM
;
1996 e
->pdr
.regmask
= 0x80000000;
1997 e
->pdr
.regoffset
= -4;
2001 /* It would be reasonable that functions that have been compiled
2002 without debugging info have a btNil type for their return value,
2003 and functions that are void and are compiled with debugging info
2005 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2006 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2008 The glevel field in cur_fdr could be used to determine the presence
2009 of debugging info, but GCC doesn't always pass the -g switch settings
2010 to the assembler and GAS doesn't set the glevel field from the -g switch
2012 To work around these problems, the return value type of a TYPE_CODE_VOID
2013 function is adjusted accordingly if no debugging info was found in the
2014 compilation unit. */
2016 if (processing_gcc_compilation
== 0
2017 && found_ecoff_debugging_info
== 0
2018 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s
))) == TYPE_CODE_VOID
)
2019 SYMBOL_TYPE (s
) = nodebug_func_symbol_type
;
2022 /* Relocate the extra function info pointed to by the symbol table. */
2025 ecoff_relocate_efi (sym
, delta
)
2029 struct mips_extra_func_info
*e
;
2031 e
= (struct mips_extra_func_info
*) SYMBOL_VALUE (sym
);
2033 e
->pdr
.adr
+= delta
;
2036 /* Parse the external symbol ES. Just call parse_symbol() after
2037 making sure we know where the aux are for it.
2038 BIGEND says whether aux entries are big-endian or little-endian.
2040 This routine clobbers top_stack->cur_block and ->cur_st. */
2042 static void parse_external
PARAMS ((EXTR
*, int, struct section_offsets
*));
2045 parse_external (es
, bigend
, section_offsets
)
2048 struct section_offsets
*section_offsets
;
2052 if (es
->ifd
!= ifdNil
)
2055 cur_fdr
= debug_info
->fdr
+ cur_fd
;
2056 ax
= debug_info
->external_aux
+ cur_fdr
->iauxBase
;
2060 cur_fdr
= debug_info
->fdr
;
2064 /* Reading .o files */
2065 if (es
->asym
.sc
== scUndefined
|| es
->asym
.sc
== scNil
)
2068 switch (es
->asym
.st
)
2071 /* These are generated for static symbols in .o files,
2092 /* FIXME: Turn this into a complaint? */
2094 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2095 what
, debug_info
->ssext
+ es
->asym
.iss
,
2096 fdr_name (cur_fdr
));
2100 switch (es
->asym
.st
)
2104 /* There is no need to parse the external procedure symbols.
2105 If they are from objects compiled without -g, their index will
2106 be indexNil, and the symbol definition from the minimal symbol
2107 is preferrable (yielding a function returning int instead of int).
2108 If the index points to a local procedure symbol, the local
2109 symbol already provides the correct type.
2110 Note that the index of the external procedure symbol points
2111 to the local procedure symbol in the local symbol table, and
2112 _not_ to the auxiliary symbol info. */
2116 /* Global common symbols are resolved by the runtime loader,
2118 if (es
->asym
.sc
== scCommon
|| es
->asym
.sc
== scSCommon
)
2121 /* Note that the case of a symbol with indexNil must be handled
2122 anyways by parse_symbol(). */
2123 parse_symbol (&es
->asym
, ax
, (char *) NULL
, bigend
, section_offsets
);
2130 /* Parse the line number info for file descriptor FH into
2131 GDB's linetable LT. MIPS' encoding requires a little bit
2132 of magic to get things out. Note also that MIPS' line
2133 numbers can go back and forth, apparently we can live
2134 with that and do not need to reorder our linetables */
2136 static void parse_lines
PARAMS ((FDR
*, PDR
*, struct linetable
*, int,
2137 struct partial_symtab
*, CORE_ADDR
));
2140 parse_lines (fh
, pr
, lt
, maxlines
, pst
, lowest_pdr_addr
)
2143 struct linetable
*lt
;
2145 struct partial_symtab
*pst
;
2146 CORE_ADDR lowest_pdr_addr
;
2148 unsigned char *base
;
2150 int delta
, count
, lineno
= 0;
2152 if (fh
->cbLine
== 0)
2155 /* Scan by procedure descriptors */
2157 for (j
= 0; j
< fh
->cpd
; j
++, pr
++)
2161 unsigned char *halt
;
2163 /* No code for this one */
2164 if (pr
->iline
== ilineNil
||
2165 pr
->lnLow
== -1 || pr
->lnHigh
== -1)
2168 /* Determine start and end address of compressed line bytes for
2170 base
= debug_info
->line
+ fh
->cbLineOffset
;
2171 if (j
!= (fh
->cpd
- 1))
2172 halt
= base
+ pr
[1].cbLineOffset
;
2174 halt
= base
+ fh
->cbLine
;
2175 base
+= pr
->cbLineOffset
;
2177 adr
= pst
->textlow
+ pr
->adr
- lowest_pdr_addr
;
2179 l
= adr
>> 2; /* in words */
2180 for (lineno
= pr
->lnLow
; base
< halt
; )
2182 count
= *base
& 0x0f;
2183 delta
= *base
++ >> 4;
2188 delta
= (base
[0] << 8) | base
[1];
2189 if (delta
>= 0x8000)
2193 lineno
+= delta
; /* first delta is 0 */
2195 /* Complain if the line table overflows. Could happen
2196 with corrupt binaries. */
2197 if (lt
->nitems
>= maxlines
)
2199 complain (&bad_linetable_guess_complaint
, fdr_name (fh
));
2202 k
= add_line (lt
, lineno
, l
, k
);
2208 /* Master parsing procedure for first-pass reading of file symbols
2209 into a partial_symtab. */
2212 parse_partial_symbols (objfile
, section_offsets
)
2213 struct objfile
*objfile
;
2214 struct section_offsets
*section_offsets
;
2216 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
2217 const bfd_size_type external_rfd_size
= debug_swap
->external_rfd_size
;
2218 const bfd_size_type external_ext_size
= debug_swap
->external_ext_size
;
2219 void (* const swap_ext_in
) PARAMS ((bfd
*, PTR
, EXTR
*))
2220 = debug_swap
->swap_ext_in
;
2221 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
2222 = debug_swap
->swap_sym_in
;
2223 void (* const swap_rfd_in
) PARAMS ((bfd
*, PTR
, RFDT
*))
2224 = debug_swap
->swap_rfd_in
;
2226 HDRR
*hdr
= &debug_info
->symbolic_header
;
2227 /* Running pointers */
2232 register EXTR
*ext_in
;
2235 struct partial_symtab
*pst
;
2237 int past_first_source_file
= 0;
2239 /* List of current psymtab's include files */
2240 char **psymtab_include_list
;
2241 int includes_allocated
;
2244 struct pst_map
*fdr_to_pst
;
2245 /* Index within current psymtab dependency list */
2246 struct partial_symtab
**dependency_list
;
2247 int dependencies_used
, dependencies_allocated
;
2248 struct cleanup
*old_chain
;
2250 enum language prev_language
;
2251 asection
*text_sect
;
2252 int relocatable
= 0;
2254 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2255 the shared libraries are prelinked at a high memory address.
2256 We have to adjust the start address of the object file for this case,
2257 by setting it to the start address of the first procedure in the file.
2258 But we should do no adjustments if we are debugging a .o file, where
2259 the text section (and fh->adr) really starts at zero. */
2260 text_sect
= bfd_get_section_by_name (cur_bfd
, ".text");
2261 if (text_sect
!= NULL
2262 && (bfd_get_section_flags (cur_bfd
, text_sect
) & SEC_RELOC
))
2265 extern_tab
= (EXTR
*) obstack_alloc (&objfile
->psymbol_obstack
,
2266 sizeof (EXTR
) * hdr
->iextMax
);
2268 includes_allocated
= 30;
2270 psymtab_include_list
= (char **) alloca (includes_allocated
*
2272 next_symbol_text_func
= mdebug_next_symbol_text
;
2274 dependencies_allocated
= 30;
2275 dependencies_used
= 0;
2277 (struct partial_symtab
**) alloca (dependencies_allocated
*
2278 sizeof (struct partial_symtab
*));
2280 last_source_file
= NULL
;
2285 * Only parse the Local and External symbols, and the Relative FDR.
2286 * Fixup enough of the loader symtab to be able to use it.
2287 * Allocate space only for the file's portions we need to
2292 max_glevel
= MIN_GLEVEL
;
2294 /* Allocate the map FDR -> PST.
2295 Minor hack: -O3 images might claim some global data belongs
2296 to FDR -1. We`ll go along with that */
2297 fdr_to_pst
= (struct pst_map
*) xzalloc ((hdr
->ifdMax
+ 1) * sizeof *fdr_to_pst
);
2298 old_chain
= make_cleanup (free
, fdr_to_pst
);
2301 struct partial_symtab
*pst
= new_psymtab ("", objfile
, section_offsets
);
2302 fdr_to_pst
[-1].pst
= pst
;
2306 /* Allocate the global pending list. */
2308 ((struct mdebug_pending
**)
2309 obstack_alloc (&objfile
->psymbol_obstack
,
2310 hdr
->ifdMax
* sizeof (struct mdebug_pending
*)));
2311 memset ((PTR
) pending_list
, 0,
2312 hdr
->ifdMax
* sizeof (struct mdebug_pending
*));
2314 /* Pass 0 over external syms: swap them in. */
2315 ext_block
= (EXTR
*) xmalloc (hdr
->iextMax
* sizeof (EXTR
));
2316 make_cleanup (free
, ext_block
);
2318 ext_out
= (char *) debug_info
->external_ext
;
2319 ext_out_end
= ext_out
+ hdr
->iextMax
* external_ext_size
;
2321 for (; ext_out
< ext_out_end
; ext_out
+= external_ext_size
, ext_in
++)
2322 (*swap_ext_in
) (cur_bfd
, ext_out
, ext_in
);
2324 /* Pass 1 over external syms: Presize and partition the list */
2326 ext_in_end
= ext_in
+ hdr
->iextMax
;
2327 for (; ext_in
< ext_in_end
; ext_in
++)
2329 /* See calls to complain below. */
2330 if (ext_in
->ifd
>= -1
2331 && ext_in
->ifd
< hdr
->ifdMax
2332 && ext_in
->asym
.iss
>= 0
2333 && ext_in
->asym
.iss
< hdr
->issExtMax
)
2334 fdr_to_pst
[ext_in
->ifd
].n_globals
++;
2337 /* Pass 1.5 over files: partition out global symbol space */
2339 for (f_idx
= -1; f_idx
< hdr
->ifdMax
; f_idx
++)
2341 fdr_to_pst
[f_idx
].globals_offset
= s_idx
;
2342 s_idx
+= fdr_to_pst
[f_idx
].n_globals
;
2343 fdr_to_pst
[f_idx
].n_globals
= 0;
2346 /* Pass 2 over external syms: fill in external symbols */
2348 ext_in_end
= ext_in
+ hdr
->iextMax
;
2349 for (; ext_in
< ext_in_end
; ext_in
++)
2351 enum minimal_symbol_type ms_type
= mst_text
;
2352 CORE_ADDR svalue
= ext_in
->asym
.value
;
2354 /* The Irix 5 native tools seem to sometimes generate bogus
2355 external symbols. */
2356 if (ext_in
->ifd
< -1 || ext_in
->ifd
>= hdr
->ifdMax
)
2358 complain (&bad_ext_ifd_complaint
, ext_in
->ifd
, hdr
->ifdMax
);
2361 if (ext_in
->asym
.iss
< 0 || ext_in
->asym
.iss
>= hdr
->issExtMax
)
2363 complain (&bad_ext_iss_complaint
, ext_in
->asym
.iss
,
2368 extern_tab
[fdr_to_pst
[ext_in
->ifd
].globals_offset
2369 + fdr_to_pst
[ext_in
->ifd
].n_globals
++] = *ext_in
;
2371 if (ext_in
->asym
.sc
== scUndefined
|| ext_in
->asym
.sc
== scNil
)
2374 name
= debug_info
->ssext
+ ext_in
->asym
.iss
;
2375 switch (ext_in
->asym
.st
)
2378 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2381 ms_type
= mst_file_text
;
2382 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2385 if (ext_in
->asym
.sc
== scCommon
|| ext_in
->asym
.sc
== scSCommon
)
2387 /* The value of a common symbol is its size, not its address.
2391 else if (ext_in
->asym
.sc
== scData
2392 || ext_in
->asym
.sc
== scSData
2393 || ext_in
->asym
.sc
== scRData
2394 || ext_in
->asym
.sc
== scPData
2395 || ext_in
->asym
.sc
== scXData
)
2398 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2403 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2407 if (ext_in
->asym
.sc
== scAbs
)
2409 else if (ext_in
->asym
.sc
== scText
2410 || ext_in
->asym
.sc
== scInit
2411 || ext_in
->asym
.sc
== scFini
)
2413 ms_type
= mst_file_text
;
2414 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2416 else if (ext_in
->asym
.sc
== scData
2417 || ext_in
->asym
.sc
== scSData
2418 || ext_in
->asym
.sc
== scRData
2419 || ext_in
->asym
.sc
== scPData
2420 || ext_in
->asym
.sc
== scXData
)
2422 ms_type
= mst_file_data
;
2423 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2427 ms_type
= mst_file_bss
;
2428 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2432 /* The alpha has the section start addresses in stLocal symbols
2433 whose name starts with a `.'. Skip those but complain for all
2434 other stLocal symbols. */
2439 ms_type
= mst_unknown
;
2440 complain (&unknown_ext_complaint
, name
);
2442 prim_record_minimal_symbol (name
, svalue
, ms_type
, objfile
);
2445 /* Pass 3 over files, over local syms: fill in static symbols */
2446 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2448 struct partial_symtab
*save_pst
;
2452 cur_fdr
= fh
= debug_info
->fdr
+ f_idx
;
2456 fdr_to_pst
[f_idx
].pst
= NULL
;
2460 /* Determine the start address for this object file from the
2461 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2465 if (relocatable
|| textlow
!= 0)
2466 textlow
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2470 pst
= start_psymtab_common (objfile
, section_offsets
,
2473 objfile
->global_psymbols
.next
,
2474 objfile
->static_psymbols
.next
);
2475 pst
->read_symtab_private
= ((char *)
2476 obstack_alloc (&objfile
->psymbol_obstack
,
2477 sizeof (struct symloc
)));
2478 memset ((PTR
) pst
->read_symtab_private
, 0, sizeof (struct symloc
));
2481 FDR_IDX (pst
) = f_idx
;
2482 CUR_BFD (pst
) = cur_bfd
;
2483 DEBUG_SWAP (pst
) = debug_swap
;
2484 DEBUG_INFO (pst
) = debug_info
;
2485 PENDING_LIST (pst
) = pending_list
;
2487 /* The way to turn this into a symtab is to call... */
2488 pst
->read_symtab
= mdebug_psymtab_to_symtab
;
2490 /* Set up language for the pst.
2491 The language from the FDR is used if it is unambigious (e.g. cfront
2492 with native cc and g++ will set the language to C).
2493 Otherwise we have to deduce the language from the filename.
2494 Native ecoff has every header file in a separate FDR, so
2495 deduce_language_from_filename will return language_unknown for
2496 a header file, which is not what we want.
2497 But the FDRs for the header files are after the FDR for the source
2498 file, so we can assign the language of the source file to the
2499 following header files. Then we save the language in the private
2500 pst data so that we can reuse it when building symtabs. */
2501 prev_language
= psymtab_language
;
2505 case langCplusplusV2
:
2506 psymtab_language
= language_cplus
;
2509 psymtab_language
= deduce_language_from_filename (fdr_name (fh
));
2512 if (psymtab_language
== language_unknown
)
2513 psymtab_language
= prev_language
;
2514 PST_PRIVATE (pst
)->pst_language
= psymtab_language
;
2516 pst
->texthigh
= pst
->textlow
;
2518 /* For stabs-in-ecoff files, the second symbol must be @stab.
2519 This symbol is emitted by mips-tfile to signal that the
2520 current object file uses encapsulated stabs instead of mips
2521 ecoff for local symbols. (It is the second symbol because
2522 the first symbol is the stFile used to signal the start of a
2524 processing_gcc_compilation
= 0;
2527 (*swap_sym_in
) (cur_bfd
,
2528 ((char *) debug_info
->external_sym
2529 + (fh
->isymBase
+ 1) * external_sym_size
),
2531 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
, stabs_symbol
))
2532 processing_gcc_compilation
= 2;
2535 if (processing_gcc_compilation
!= 0)
2537 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
2542 (*swap_sym_in
) (cur_bfd
,
2543 (((char *) debug_info
->external_sym
)
2544 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
2546 type_code
= ECOFF_UNMARK_STAB (sh
.index
);
2547 if (!ECOFF_IS_STAB (&sh
))
2549 if (sh
.st
== stProc
|| sh
.st
== stStaticProc
)
2554 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2555 if (sh
.st
== stStaticProc
)
2557 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2558 prim_record_minimal_symbol_and_info (namestring
,
2565 procaddr
= sh
.value
;
2567 isym
= AUX_GET_ISYM (fh
->fBigendian
,
2568 (debug_info
->external_aux
2571 (*swap_sym_in
) (cur_bfd
,
2572 ((char *) debug_info
->external_sym
2573 + ((fh
->isymBase
+ isym
- 1)
2574 * external_sym_size
)),
2578 long high
= procaddr
+ sh
.value
;
2580 /* Kludge for Irix 5.2 zero fh->adr. */
2582 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2583 pst
->textlow
= procaddr
;
2584 if (high
> pst
->texthigh
)
2585 pst
->texthigh
= high
;
2588 else if (sh
.st
== stStatic
)
2602 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2603 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2604 prim_record_minimal_symbol_and_info (namestring
,
2613 namestring
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2614 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2615 prim_record_minimal_symbol_and_info (namestring
,
2626 #define SET_NAMESTRING() \
2627 namestring = debug_info->ss + fh->issBase + sh.iss
2628 #define CUR_SYMBOL_TYPE type_code
2629 #define CUR_SYMBOL_VALUE sh.value
2630 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2632 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2633 #define HANDLE_RBRAC(val) \
2634 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2635 #include "partial-stab.h"
2640 for (cur_sdx
= 0; cur_sdx
< fh
->csym
;)
2643 enum address_class
class;
2645 (*swap_sym_in
) (cur_bfd
,
2646 ((char *) debug_info
->external_sym
2647 + ((fh
->isymBase
+ cur_sdx
)
2648 * external_sym_size
)),
2651 if (ECOFF_IS_STAB (&sh
))
2657 /* Non absolute static symbols go into the minimal table. */
2658 if (sh
.sc
== scUndefined
|| sh
.sc
== scNil
2659 || (sh
.index
== indexNil
2660 && (sh
.st
!= stStatic
|| sh
.sc
== scAbs
)))
2662 /* FIXME, premature? */
2667 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
2672 /* The value of a stEnd symbol is the displacement from the
2673 corresponding start symbol value, do not relocate it. */
2675 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2682 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2686 sh
.value
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2697 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2698 mst_file_text
, NULL
,
2699 SECT_OFF_TEXT
, objfile
);
2704 /* Usually there is a local and a global stProc symbol
2705 for a function. This means that the function name
2706 has already been entered into the mimimal symbol table
2707 while processing the global symbols in pass 2 above.
2708 One notable exception is the PROGRAM name from
2709 f77 compiled executables, it is only put out as
2710 local stProc symbol, and a global MAIN__ stProc symbol
2711 points to it. It doesn't matter though, as gdb is
2712 still able to find the PROGRAM name via the partial
2713 symbol table, and the MAIN__ symbol via the minimal
2715 if (sh
.st
== stProc
)
2716 add_psymbol_to_list (name
, strlen (name
),
2717 VAR_NAMESPACE
, LOC_BLOCK
,
2718 &objfile
->global_psymbols
,
2719 sh
.value
, 0, psymtab_language
, objfile
);
2721 add_psymbol_to_list (name
, strlen (name
),
2722 VAR_NAMESPACE
, LOC_BLOCK
,
2723 &objfile
->static_psymbols
,
2724 sh
.value
, 0, psymtab_language
, objfile
);
2726 /* Skip over procedure to next one. */
2727 if (sh
.index
>= hdr
->iauxMax
)
2729 /* Should not happen, but does when cross-compiling
2730 with the MIPS compiler. FIXME -- pull later. */
2731 complain (&index_complaint
, name
);
2732 new_sdx
= cur_sdx
+ 1; /* Don't skip at all */
2735 new_sdx
= AUX_GET_ISYM (fh
->fBigendian
,
2736 (debug_info
->external_aux
2739 procaddr
= sh
.value
;
2741 if (new_sdx
<= cur_sdx
)
2743 /* This should not happen either... FIXME. */
2744 complain (&aux_index_complaint
, name
);
2745 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2749 (*swap_sym_in
) (cur_bfd
,
2750 ((char *) debug_info
->external_sym
2751 + ((fh
->isymBase
+ cur_sdx
- 1)
2752 * external_sym_size
)),
2757 /* Kludge for Irix 5.2 zero fh->adr. */
2759 && (pst
->textlow
== 0 || procaddr
< pst
->textlow
))
2760 pst
->textlow
= procaddr
;
2762 high
= procaddr
+ sh
.value
;
2763 if (high
> pst
->texthigh
)
2764 pst
->texthigh
= high
;
2767 case stStatic
: /* Variable */
2772 || sh
.sc
== scXData
)
2773 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2774 mst_file_data
, NULL
,
2778 prim_record_minimal_symbol_and_info (name
, sh
.value
,
2785 case stIndirect
:/* Irix5 forward declaration */
2786 /* Skip forward declarations from Irix5 cc */
2789 case stTypedef
:/* Typedef */
2790 /* Skip typedefs for forward declarations and opaque
2791 structs from alpha and mips cc. */
2792 if (sh
.iss
== 0 || has_opaque_xref (fh
, &sh
))
2794 class = LOC_TYPEDEF
;
2797 case stConstant
: /* Constant decl */
2804 case stBlock
: /* { }, str, un, enum*/
2805 /* Do not create a partial symbol for cc unnamed aggregates
2806 and gcc empty aggregates. */
2807 if ((sh
.sc
== scInfo
2808 || sh
.sc
== scCommon
|| sh
.sc
== scSCommon
)
2810 && sh
.index
!= cur_sdx
+ 2)
2812 add_psymbol_to_list (name
, strlen (name
),
2813 STRUCT_NAMESPACE
, LOC_TYPEDEF
,
2814 &objfile
->static_psymbols
,
2816 psymtab_language
, objfile
);
2818 handle_psymbol_enumerators (objfile
, fh
, sh
.st
, sh
.value
);
2820 /* Skip over the block */
2822 if (new_sdx
<= cur_sdx
)
2824 /* This happens with the Ultrix kernel. */
2825 complain (&block_index_complaint
, name
);
2826 new_sdx
= cur_sdx
+ 1; /* Don't skip backward */
2831 case stFile
: /* File headers */
2832 case stLabel
: /* Labels */
2833 case stEnd
: /* Ends of files */
2836 case stLocal
: /* Local variables */
2837 /* Normally these are skipped because we skip over
2838 all blocks we see. However, these can occur
2839 as visible symbols in a .h file that contains code. */
2843 /* Both complaints are valid: one gives symbol name,
2844 the other the offending symbol type. */
2845 complain (&unknown_sym_complaint
, name
);
2846 complain (&unknown_st_complaint
, sh
.st
);
2850 /* Use this gdb symbol */
2851 add_psymbol_to_list (name
, strlen (name
),
2852 VAR_NAMESPACE
, class,
2853 &objfile
->static_psymbols
, sh
.value
,
2854 0, psymtab_language
, objfile
);
2856 cur_sdx
++; /* Go to next file symbol */
2859 /* Now do enter the external symbols. */
2860 ext_ptr
= &extern_tab
[fdr_to_pst
[f_idx
].globals_offset
];
2861 cur_sdx
= fdr_to_pst
[f_idx
].n_globals
;
2862 PST_PRIVATE (save_pst
)->extern_count
= cur_sdx
;
2863 PST_PRIVATE (save_pst
)->extern_tab
= ext_ptr
;
2864 for (; --cur_sdx
>= 0; ext_ptr
++)
2866 enum address_class
class;
2871 if (ext_ptr
->ifd
!= f_idx
)
2873 psh
= &ext_ptr
->asym
;
2875 /* Do not add undefined symbols to the partial symbol table. */
2876 if (psh
->sc
== scUndefined
|| psh
->sc
== scNil
)
2879 svalue
= psh
->value
;
2883 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_TEXT
);
2890 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_DATA
);
2894 svalue
+= ANOFFSET (section_offsets
, SECT_OFF_BSS
);
2901 /* These are generated for static symbols in .o files,
2906 /* External procedure symbols have been entered
2907 into the minimal symbol table in pass 2 above.
2908 Ignore them, as parse_external will ignore them too. */
2914 complain (&unknown_ext_complaint
,
2915 debug_info
->ssext
+ psh
->iss
);
2916 /* Fall through, pretend it's global. */
2918 /* Global common symbols are resolved by the runtime loader,
2920 if (psh
->sc
== scCommon
|| psh
->sc
== scSCommon
)
2926 name
= debug_info
->ssext
+ psh
->iss
;
2927 add_psymbol_to_list (name
, strlen (name
),
2928 VAR_NAMESPACE
, class,
2929 &objfile
->global_psymbols
,
2931 psymtab_language
, objfile
);
2935 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2936 empty and put on the free list. */
2937 fdr_to_pst
[f_idx
].pst
= end_psymtab (save_pst
,
2938 psymtab_include_list
, includes_used
,
2939 -1, save_pst
->texthigh
,
2940 dependency_list
, dependencies_used
);
2942 dependencies_used
= 0;
2944 if (objfile
->ei
.entry_point
>= save_pst
->textlow
&&
2945 objfile
->ei
.entry_point
< save_pst
->texthigh
)
2947 objfile
->ei
.entry_file_lowpc
= save_pst
->textlow
;
2948 objfile
->ei
.entry_file_highpc
= save_pst
->texthigh
;
2951 /* The objfile has its functions reordered if this partial symbol
2952 table overlaps any other partial symbol table.
2953 We cannot assume a reordered objfile if a partial symbol table
2954 is contained within another partial symbol table, as partial symbol
2955 tables for include files with executable code are contained
2956 within the partial symbol table for the including source file,
2957 and we do not want to flag the objfile reordered for these cases.
2959 This strategy works well for Irix-5.2 shared libraries, but we
2960 might have to use a more elaborate (and slower) algorithm for
2962 save_pst
= fdr_to_pst
[f_idx
].pst
;
2963 if (save_pst
!= NULL
2964 && save_pst
->textlow
!= 0
2965 && !(objfile
->flags
& OBJF_REORDERED
))
2967 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
2970 && save_pst
->textlow
>= pst
->textlow
2971 && save_pst
->textlow
< pst
->texthigh
2972 && save_pst
->texthigh
> pst
->texthigh
)
2974 objfile
->flags
|= OBJF_REORDERED
;
2981 /* Now scan the FDRs for dependencies */
2982 for (f_idx
= 0; f_idx
< hdr
->ifdMax
; f_idx
++)
2984 fh
= f_idx
+ debug_info
->fdr
;
2985 pst
= fdr_to_pst
[f_idx
].pst
;
2987 if (pst
== (struct partial_symtab
*)NULL
)
2990 /* This should catch stabs-in-ecoff. */
2994 /* Skip the first file indirect entry as it is a self dependency
2995 for source files or a reverse .h -> .c dependency for header files. */
2996 pst
->number_of_dependencies
= 0;
2998 ((struct partial_symtab
**)
2999 obstack_alloc (&objfile
->psymbol_obstack
,
3001 * sizeof (struct partial_symtab
*))));
3002 for (s_idx
= 1; s_idx
< fh
->crfd
; s_idx
++)
3006 (*swap_rfd_in
) (cur_bfd
,
3007 ((char *) debug_info
->external_rfd
3008 + (fh
->rfdBase
+ s_idx
) * external_rfd_size
),
3010 if (rh
< 0 || rh
>= hdr
->ifdMax
)
3012 complain (&bad_file_number_complaint
, rh
);
3016 /* Skip self dependencies of header files. */
3020 /* Do not add to dependeny list if psymtab was empty. */
3021 if (fdr_to_pst
[rh
].pst
== (struct partial_symtab
*)NULL
)
3023 pst
->dependencies
[pst
->number_of_dependencies
++] = fdr_to_pst
[rh
].pst
;
3027 /* Remove the dummy psymtab created for -O3 images above, if it is
3028 still empty, to enable the detection of stripped executables. */
3029 if (objfile
->psymtabs
->next
== NULL
3030 && objfile
->psymtabs
->number_of_dependencies
== 0
3031 && objfile
->psymtabs
->n_global_syms
== 0
3032 && objfile
->psymtabs
->n_static_syms
== 0)
3033 objfile
->psymtabs
= NULL
;
3034 do_cleanups (old_chain
);
3037 /* If the current psymbol has an enumerated type, we need to add
3038 all the the enum constants to the partial symbol table. */
3041 handle_psymbol_enumerators (objfile
, fh
, stype
, svalue
)
3042 struct objfile
*objfile
;
3047 const bfd_size_type external_sym_size
= debug_swap
->external_sym_size
;
3048 void (* const swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*))
3049 = debug_swap
->swap_sym_in
;
3050 char *ext_sym
= ((char *) debug_info
->external_sym
3051 + ((fh
->isymBase
+ cur_sdx
+ 1) * external_sym_size
));
3061 /* It is an enumerated type if the next symbol entry is a stMember
3062 and its auxiliary index is indexNil or its auxiliary entry
3063 is a plain btNil or btVoid.
3064 Alpha cc -migrate enums are recognized by a zero index and
3065 a zero symbol value. */
3066 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3067 if (sh
.st
!= stMember
)
3070 if (sh
.index
== indexNil
3071 || (sh
.index
== 0 && svalue
== 0))
3073 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
,
3074 &(debug_info
->external_aux
3075 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3077 if ((tir
.bt
!= btNil
&& tir
.bt
!= btVoid
) || tir
.tq0
!= tqNil
)
3089 (*swap_sym_in
) (cur_bfd
, ext_sym
, &sh
);
3090 if (sh
.st
!= stMember
)
3092 name
= debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3094 /* Note that the value doesn't matter for enum constants
3095 in psymtabs, just in symtabs. */
3096 add_psymbol_to_list (name
, strlen (name
),
3097 VAR_NAMESPACE
, LOC_CONST
,
3098 &objfile
->static_psymbols
, 0,
3099 0, psymtab_language
, objfile
);
3100 ext_sym
+= external_sym_size
;
3105 mdebug_next_symbol_text (objfile
)
3106 struct objfile
*objfile
; /* argument objfile is currently unused */
3111 (*debug_swap
->swap_sym_in
) (cur_bfd
,
3112 ((char *) debug_info
->external_sym
3113 + ((cur_fdr
->isymBase
+ cur_sdx
)
3114 * debug_swap
->external_sym_size
)),
3116 return debug_info
->ss
+ cur_fdr
->issBase
+ sh
.iss
;
3119 /* Ancillary function to psymtab_to_symtab(). Does all the work
3120 for turning the partial symtab PST into a symtab, recurring
3121 first on all dependent psymtabs. The argument FILENAME is
3122 only passed so we can see in debug stack traces what file
3125 This function has a split personality, based on whether the
3126 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3127 The flow of control and even the memory allocation differs. FIXME. */
3130 psymtab_to_symtab_1 (pst
, filename
)
3131 struct partial_symtab
*pst
;
3134 bfd_size_type external_sym_size
;
3135 bfd_size_type external_pdr_size
;
3136 void (*swap_sym_in
) PARAMS ((bfd
*, PTR
, SYMR
*));
3137 void (*swap_pdr_in
) PARAMS ((bfd
*, PTR
, PDR
*));
3141 struct linetable
*lines
;
3142 CORE_ADDR lowest_pdr_addr
= 0;
3148 /* Read in all partial symbtabs on which this one is dependent.
3149 NOTE that we do have circular dependencies, sigh. We solved
3150 that by setting pst->readin before this point. */
3152 for (i
= 0; i
< pst
->number_of_dependencies
; i
++)
3153 if (!pst
->dependencies
[i
]->readin
)
3155 /* Inform about additional files to be read in. */
3158 fputs_filtered (" ", gdb_stdout
);
3160 fputs_filtered ("and ", gdb_stdout
);
3162 printf_filtered ("%s...",
3163 pst
->dependencies
[i
]->filename
);
3164 wrap_here (""); /* Flush output */
3165 gdb_flush (gdb_stdout
);
3167 /* We only pass the filename for debug purposes */
3168 psymtab_to_symtab_1 (pst
->dependencies
[i
],
3169 pst
->dependencies
[i
]->filename
);
3172 /* Do nothing if this is a dummy psymtab. */
3174 if (pst
->n_global_syms
== 0 && pst
->n_static_syms
== 0
3175 && pst
->textlow
== 0 && pst
->texthigh
== 0)
3178 /* Now read the symbols for this symtab */
3180 cur_bfd
= CUR_BFD (pst
);
3181 debug_swap
= DEBUG_SWAP (pst
);
3182 debug_info
= DEBUG_INFO (pst
);
3183 pending_list
= PENDING_LIST (pst
);
3184 external_sym_size
= debug_swap
->external_sym_size
;
3185 external_pdr_size
= debug_swap
->external_pdr_size
;
3186 swap_sym_in
= debug_swap
->swap_sym_in
;
3187 swap_pdr_in
= debug_swap
->swap_pdr_in
;
3188 current_objfile
= pst
->objfile
;
3189 cur_fd
= FDR_IDX (pst
);
3190 fh
= ((cur_fd
== -1)
3192 : debug_info
->fdr
+ cur_fd
);
3195 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3196 processing_gcc_compilation
= 0;
3197 if (fh
!= (FDR
*) NULL
&& fh
->csym
>= 2)
3201 (*swap_sym_in
) (cur_bfd
,
3202 ((char *) debug_info
->external_sym
3203 + (fh
->isymBase
+ 1) * external_sym_size
),
3205 if (STREQ (debug_info
->ss
+ fh
->issBase
+ sh
.iss
,
3208 /* We indicate that this is a GCC compilation so that certain
3209 features will be enabled in stabsread/dbxread. */
3210 processing_gcc_compilation
= 2;
3214 if (processing_gcc_compilation
!= 0)
3217 /* This symbol table contains stabs-in-ecoff entries. */
3219 /* Parse local symbols first */
3221 if (fh
->csym
<= 2) /* FIXME, this blows psymtab->symtab ptr */
3223 current_objfile
= NULL
;
3226 for (cur_sdx
= 2; cur_sdx
< fh
->csym
; cur_sdx
++)
3232 (*swap_sym_in
) (cur_bfd
,
3233 (((char *) debug_info
->external_sym
)
3234 + (fh
->isymBase
+ cur_sdx
) * external_sym_size
),
3236 name
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3238 if (ECOFF_IS_STAB (&sh
))
3240 int type_code
= ECOFF_UNMARK_STAB (sh
.index
);
3242 /* We should never get non N_STAB symbols here, but they
3243 should be harmless, so keep process_one_symbol from
3244 complaining about them. */
3245 if (type_code
& N_STAB
)
3247 process_one_symbol (type_code
, 0, valu
, name
,
3248 pst
->section_offsets
, pst
->objfile
);
3250 if (type_code
== N_FUN
)
3252 /* Make up special symbol to contain
3253 procedure specific info */
3254 struct mips_extra_func_info
*e
=
3255 ((struct mips_extra_func_info
*)
3256 obstack_alloc (¤t_objfile
->symbol_obstack
,
3257 sizeof (struct mips_extra_func_info
)));
3258 struct symbol
*s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
3260 memset ((PTR
) e
, 0, sizeof (struct mips_extra_func_info
));
3261 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
3262 SYMBOL_CLASS (s
) = LOC_CONST
;
3263 SYMBOL_TYPE (s
) = mdebug_type_void
;
3264 SYMBOL_VALUE (s
) = (long) e
;
3265 e
->pdr
.framereg
= -1;
3266 add_symbol_to_list (s
, &local_symbols
);
3269 else if (sh
.st
== stLabel
)
3271 if (sh
.index
== indexNil
)
3273 /* This is what the gcc2_compiled and __gnu_compiled_*
3274 show up as. So don't complain. */
3279 /* Handle encoded stab line number. */
3280 valu
+= ANOFFSET (pst
->section_offsets
, SECT_OFF_TEXT
);
3281 record_line (current_subfile
, sh
.index
, valu
);
3284 else if (sh
.st
== stProc
|| sh
.st
== stStaticProc
3285 || sh
.st
== stStatic
|| sh
.st
== stEnd
)
3286 /* These are generated by gcc-2.x, do not complain */
3289 complain (&stab_unknown_complaint
, name
);
3291 st
= end_symtab (pst
->texthigh
, pst
->objfile
, SECT_OFF_TEXT
);
3294 /* Sort the symbol table now, we are done adding symbols to it.
3295 We must do this before parse_procedure calls lookup_symbol. */
3296 sort_symtab_syms (st
);
3298 /* There used to be a call to sort_blocks here, but this should not
3299 be necessary for stabs symtabs. And as sort_blocks modifies the
3300 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3301 it did the wrong thing if the first procedure in a file was
3302 generated via asm statements. */
3304 /* Fill in procedure info next. */
3308 struct cleanup
*old_chain
;
3314 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3315 old_chain
= make_cleanup (free
, pr_block
);
3317 pdr_ptr
= ((char *) debug_info
->external_pdr
3318 + fh
->ipdFirst
* external_pdr_size
);
3319 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3323 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3325 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3327 /* Determine lowest PDR address, the PDRs are not always
3329 if (pdr_in
== pr_block
)
3330 lowest_pdr_addr
= pdr_in
->adr
;
3331 else if (pdr_in
->adr
< lowest_pdr_addr
)
3332 lowest_pdr_addr
= pdr_in
->adr
;
3336 pdr_in_end
= pdr_in
+ fh
->cpd
;
3337 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3338 parse_procedure (pdr_in
, st
, lowest_pdr_addr
, pst
);
3340 do_cleanups (old_chain
);
3345 /* This symbol table contains ordinary ecoff entries. */
3351 /* How many symbols will we need */
3352 /* FIXME, this does not count enum values. */
3353 f_max
= pst
->n_global_syms
+ pst
->n_static_syms
;
3357 st
= new_symtab ("unknown", f_max
, 0, pst
->objfile
);
3361 f_max
+= fh
->csym
+ fh
->cpd
;
3362 maxlines
= 2 * fh
->cline
;
3363 st
= new_symtab (pst
->filename
, 2 * f_max
, maxlines
, pst
->objfile
);
3365 /* The proper language was already determined when building
3366 the psymtab, use it. */
3367 st
->language
= PST_PRIVATE (pst
)->pst_language
;
3370 psymtab_language
= st
->language
;
3372 lines
= LINETABLE (st
);
3374 /* Get a new lexical context */
3376 push_parse_stack ();
3377 top_stack
->cur_st
= st
;
3378 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (st
),
3380 BLOCK_START (top_stack
->cur_block
) = pst
->textlow
;
3381 BLOCK_END (top_stack
->cur_block
) = 0;
3382 top_stack
->blocktype
= stFile
;
3383 top_stack
->maxsyms
= 2 * f_max
;
3384 top_stack
->cur_type
= 0;
3385 top_stack
->procadr
= 0;
3386 top_stack
->numargs
= 0;
3387 found_ecoff_debugging_info
= 0;
3394 /* Parse local symbols first */
3395 sym_ptr
= ((char *) debug_info
->external_sym
3396 + fh
->isymBase
* external_sym_size
);
3397 sym_end
= sym_ptr
+ fh
->csym
* external_sym_size
;
3398 while (sym_ptr
< sym_end
)
3403 (*swap_sym_in
) (cur_bfd
, sym_ptr
, &sh
);
3404 c
= parse_symbol (&sh
,
3405 debug_info
->external_aux
+ fh
->iauxBase
,
3406 sym_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3407 sym_ptr
+= c
* external_sym_size
;
3410 /* Linenumbers. At the end, check if we can save memory.
3411 parse_lines has to look ahead an arbitrary number of PDR
3412 structures, so we swap them all first. */
3416 struct cleanup
*old_chain
;
3422 pr_block
= (PDR
*) xmalloc (fh
->cpd
* sizeof (PDR
));
3424 old_chain
= make_cleanup (free
, pr_block
);
3426 pdr_ptr
= ((char *) debug_info
->external_pdr
3427 + fh
->ipdFirst
* external_pdr_size
);
3428 pdr_end
= pdr_ptr
+ fh
->cpd
* external_pdr_size
;
3432 pdr_ptr
+= external_pdr_size
, pdr_in
++)
3434 (*swap_pdr_in
) (cur_bfd
, pdr_ptr
, pdr_in
);
3436 /* Determine lowest PDR address, the PDRs are not always
3438 if (pdr_in
== pr_block
)
3439 lowest_pdr_addr
= pdr_in
->adr
;
3440 else if (pdr_in
->adr
< lowest_pdr_addr
)
3441 lowest_pdr_addr
= pdr_in
->adr
;
3444 parse_lines (fh
, pr_block
, lines
, maxlines
, pst
, lowest_pdr_addr
);
3445 if (lines
->nitems
< fh
->cline
)
3446 lines
= shrink_linetable (lines
);
3448 /* Fill in procedure info next. */
3450 pdr_in_end
= pdr_in
+ fh
->cpd
;
3451 for (; pdr_in
< pdr_in_end
; pdr_in
++)
3452 parse_procedure (pdr_in
, 0, lowest_pdr_addr
, pst
);
3454 do_cleanups (old_chain
);
3458 LINETABLE (st
) = lines
;
3460 /* .. and our share of externals.
3461 XXX use the global list to speed up things here. how?
3462 FIXME, Maybe quit once we have found the right number of ext's? */
3463 top_stack
->cur_st
= st
;
3464 top_stack
->cur_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack
->cur_st
),
3466 top_stack
->blocktype
= stFile
;
3468 = (debug_info
->symbolic_header
.isymMax
3469 + debug_info
->symbolic_header
.ipdMax
3470 + debug_info
->symbolic_header
.iextMax
);
3472 ext_ptr
= PST_PRIVATE (pst
)->extern_tab
;
3473 for (i
= PST_PRIVATE (pst
)->extern_count
; --i
>= 0; ext_ptr
++)
3474 parse_external (ext_ptr
, fh
->fBigendian
, pst
->section_offsets
);
3476 /* If there are undefined symbols, tell the user.
3477 The alpha has an undefined symbol for every symbol that is
3478 from a shared library, so tell the user only if verbose is on. */
3479 if (info_verbose
&& n_undef_symbols
)
3481 printf_filtered ("File %s contains %d unresolved references:",
3482 st
->filename
, n_undef_symbols
);
3483 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3484 n_undef_vars
, n_undef_procs
, n_undef_labels
);
3485 n_undef_symbols
= n_undef_labels
= n_undef_vars
= n_undef_procs
= 0;
3492 /* Sort the symbol table now, we are done adding symbols to it.*/
3493 sort_symtab_syms (st
);
3498 /* Now link the psymtab and the symtab. */
3501 current_objfile
= NULL
;
3504 /* Ancillary parsing procedures. */
3506 /* Return 1 if the symbol pointed to by SH has a cross reference
3507 to an opaque aggregate type, else 0. */
3510 has_opaque_xref (fh
, sh
)
3519 if (sh
->index
== indexNil
)
3522 ax
= debug_info
->external_aux
+ fh
->iauxBase
+ sh
->index
;
3523 (*debug_swap
->swap_tir_in
) (fh
->fBigendian
, &ax
->a_ti
, &tir
);
3524 if (tir
.bt
!= btStruct
&& tir
.bt
!= btUnion
&& tir
.bt
!= btEnum
)
3528 (*debug_swap
->swap_rndx_in
) (fh
->fBigendian
, &ax
->a_rndx
, rn
);
3529 if (rn
->rfd
== 0xfff)
3530 rf
= AUX_GET_ISYM (fh
->fBigendian
, ax
+ 1);
3538 /* Lookup the type at relative index RN. Return it in TPP
3539 if found and in any event come up with its name PNAME.
3540 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3541 Return value says how many aux symbols we ate. */
3544 cross_ref (fd
, ax
, tpp
, type_code
, pname
, bigend
, sym_name
)
3548 enum type_code type_code
; /* Use to alloc new type if none is found. */
3560 struct mdebug_pending
*pend
;
3562 *tpp
= (struct type
*)NULL
;
3564 (*debug_swap
->swap_rndx_in
) (bigend
, &ax
->a_rndx
, rn
);
3566 /* Escape index means 'the next one' */
3567 if (rn
->rfd
== 0xfff)
3570 rf
= AUX_GET_ISYM (bigend
, ax
+ 1);
3577 /* mips cc uses a rf of -1 for opaque struct definitions.
3578 Set TYPE_FLAG_STUB for these types so that check_typedef will
3579 resolve them if the struct gets defined in another compilation unit. */
3582 *pname
= "<undefined>";
3583 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3584 TYPE_FLAGS (*tpp
) |= TYPE_FLAG_STUB
;
3588 /* mips cc uses an escaped rn->index of 0 for struct return types
3589 of procedures that were compiled without -g. These will always remain
3591 if (rn
->rfd
== 0xfff && rn
->index
== 0)
3593 *pname
= "<undefined>";
3597 /* Find the relative file descriptor and the symbol in it. */
3598 fh
= get_rfd (fd
, rf
);
3599 xref_fd
= fh
- debug_info
->fdr
;
3601 if (rn
->index
>= fh
->csym
)
3603 /* File indirect entry is corrupt. */
3604 *pname
= "<illegal>";
3605 complain (&bad_rfd_entry_complaint
,
3606 sym_name
, xref_fd
, rn
->index
);
3610 /* If we have processed this symbol then we left a forwarding
3611 pointer to the type in the pending list. If not, we`ll put
3612 it in a list of pending types, to be processed later when
3613 the file will be. In any event, we collect the name for the
3616 esh
= ((char *) debug_info
->external_sym
3617 + ((fh
->isymBase
+ rn
->index
)
3618 * debug_swap
->external_sym_size
));
3619 (*debug_swap
->swap_sym_in
) (cur_bfd
, esh
, &sh
);
3621 /* Make sure that this type of cross reference can be handled. */
3622 if ((sh
.sc
!= scInfo
3623 || (sh
.st
!= stBlock
&& sh
.st
!= stTypedef
&& sh
.st
!= stIndirect
3624 && sh
.st
!= stStruct
&& sh
.st
!= stUnion
3625 && sh
.st
!= stEnum
))
3626 && (sh
.st
!= stBlock
|| (sh
.sc
!= scCommon
&& sh
.sc
!= scSCommon
)))
3628 /* File indirect entry is corrupt. */
3629 *pname
= "<illegal>";
3630 complain (&bad_rfd_entry_complaint
,
3631 sym_name
, xref_fd
, rn
->index
);
3635 *pname
= debug_info
->ss
+ fh
->issBase
+ sh
.iss
;
3637 pend
= is_pending_symbol (fh
, esh
);
3642 /* We have not yet seen this type. */
3644 if ((sh
.iss
== 0 && sh
.st
== stTypedef
) || sh
.st
== stIndirect
)
3648 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3650 a) forward declarations of structs/unions/enums which are not
3651 defined in this compilation unit.
3652 For these the type will be void. This is a bad design decision
3653 as cross referencing across compilation units is impossible
3654 due to the missing name.
3655 b) forward declarations of structs/unions/enums/typedefs which
3656 are defined later in this file or in another file in the same
3657 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3658 Simply cross reference those again to get the true type.
3659 The forward references are not entered in the pending list and
3660 in the symbol table. */
3662 (*debug_swap
->swap_tir_in
) (bigend
,
3663 &(debug_info
->external_aux
3664 + fh
->iauxBase
+ sh
.index
)->a_ti
,
3666 if (tir
.tq0
!= tqNil
)
3667 complain (&illegal_forward_tq0_complaint
, sym_name
);
3671 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3673 *pname
= "<undefined>";
3680 (debug_info
->external_aux
3681 + fh
->iauxBase
+ sh
.index
+ 1),
3682 tpp
, type_code
, pname
,
3683 fh
->fBigendian
, sym_name
);
3687 /* Follow a forward typedef. This might recursively
3688 call cross_ref till we get a non typedef'ed type.
3689 FIXME: This is not correct behaviour, but gdb currently
3690 cannot handle typedefs without type copying. Type
3691 copying is impossible as we might have mutual forward
3692 references between two files and the copied type would not
3693 get filled in when we later parse its definition. */
3694 *tpp
= parse_type (xref_fd
,
3695 debug_info
->external_aux
+ fh
->iauxBase
,
3699 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3700 add_pending (fh
, esh
, *tpp
);
3704 complain (&illegal_forward_bt_complaint
, tir
.bt
, sym_name
);
3705 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
,
3711 else if (sh
.st
== stTypedef
)
3713 /* Parse the type for a normal typedef. This might recursively call
3714 cross_ref till we get a non typedef'ed type.
3715 FIXME: This is not correct behaviour, but gdb currently
3716 cannot handle typedefs without type copying. But type copying is
3717 impossible as we might have mutual forward references between
3718 two files and the copied type would not get filled in when
3719 we later parse its definition. */
3720 *tpp
= parse_type (xref_fd
,
3721 debug_info
->external_aux
+ fh
->iauxBase
,
3725 debug_info
->ss
+ fh
->issBase
+ sh
.iss
);
3729 /* Cross reference to a struct/union/enum which is defined
3730 in another file in the same compilation unit but that file
3731 has not been parsed yet.
3732 Initialize the type only, it will be filled in when
3733 it's definition is parsed. */
3734 *tpp
= init_type (type_code
, 0, 0, (char *) NULL
, current_objfile
);
3736 add_pending (fh
, esh
, *tpp
);
3739 /* We used one auxent normally, two if we got a "next one" rf. */
3744 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3745 keeping the symtab sorted */
3747 static struct symbol
*
3748 mylookup_symbol (name
, block
, namespace, class)
3750 register struct block
*block
;
3751 namespace_enum
namespace;
3752 enum address_class
class;
3754 register int bot
, top
, inc
;
3755 register struct symbol
*sym
;
3758 top
= BLOCK_NSYMS (block
);
3762 sym
= BLOCK_SYM (block
, bot
);
3763 if (SYMBOL_NAME (sym
)[0] == inc
3764 && SYMBOL_NAMESPACE (sym
) == namespace
3765 && SYMBOL_CLASS (sym
) == class
3766 && strcmp (SYMBOL_NAME (sym
), name
) == 0)
3770 block
= BLOCK_SUPERBLOCK (block
);
3772 return mylookup_symbol (name
, block
, namespace, class);
3777 /* Add a new symbol S to a block B.
3778 Infrequently, we will need to reallocate the block to make it bigger.
3779 We only detect this case when adding to top_stack->cur_block, since
3780 that's the only time we know how big the block is. FIXME. */
3787 int nsyms
= BLOCK_NSYMS (b
)++;
3788 struct block
*origb
;
3789 struct parse_stack
*stackp
;
3791 if (b
== top_stack
->cur_block
&&
3792 nsyms
>= top_stack
->maxsyms
)
3794 complain (&block_overflow_complaint
, SYMBOL_NAME (s
));
3795 /* In this case shrink_block is actually grow_block, since
3796 BLOCK_NSYMS(b) is larger than its current size. */
3798 b
= shrink_block (top_stack
->cur_block
, top_stack
->cur_st
);
3800 /* Now run through the stack replacing pointers to the
3801 original block. shrink_block has already done this
3802 for the blockvector and BLOCK_FUNCTION. */
3803 for (stackp
= top_stack
; stackp
; stackp
= stackp
->next
)
3805 if (stackp
->cur_block
== origb
)
3807 stackp
->cur_block
= b
;
3808 stackp
->maxsyms
= BLOCK_NSYMS (b
);
3812 BLOCK_SYM (b
, nsyms
) = s
;
3815 /* Add a new block B to a symtab S */
3822 struct blockvector
*bv
= BLOCKVECTOR (s
);
3824 bv
= (struct blockvector
*) xrealloc ((PTR
) bv
,
3825 (sizeof (struct blockvector
)
3826 + BLOCKVECTOR_NBLOCKS (bv
)
3827 * sizeof (bv
->block
)));
3828 if (bv
!= BLOCKVECTOR (s
))
3829 BLOCKVECTOR (s
) = bv
;
3831 BLOCKVECTOR_BLOCK (bv
, BLOCKVECTOR_NBLOCKS (bv
)++) = b
;
3834 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3835 MIPS' linenumber encoding might need more than one byte
3836 to describe it, LAST is used to detect these continuation lines.
3838 Combining lines with the same line number seems like a bad idea.
3839 E.g: There could be a line number entry with the same line number after the
3840 prologue and GDB should not ignore it (this is a better way to find
3841 a prologue than mips_skip_prologue).
3842 But due to the compressed line table format there are line number entries
3843 for the same line which are needed to bridge the gap to the next
3844 line number entry. These entries have a bogus address info with them
3845 and we are unable to tell them from intended duplicate line number
3847 This is another reason why -ggdb debugging format is preferable. */
3850 add_line (lt
, lineno
, adr
, last
)
3851 struct linetable
*lt
;
3856 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3857 Change them to something sensible. */
3861 last
= -2; /* make sure we record first line */
3863 if (last
== lineno
) /* skip continuation lines */
3866 lt
->item
[lt
->nitems
].line
= lineno
;
3867 lt
->item
[lt
->nitems
++].pc
= adr
<< 2;
3871 /* Sorting and reordering procedures */
3873 /* Blocks with a smaller low bound should come first */
3876 compare_blocks (arg1
, arg2
)
3880 register int addr_diff
;
3881 struct block
**b1
= (struct block
**) arg1
;
3882 struct block
**b2
= (struct block
**) arg2
;
3884 addr_diff
= (BLOCK_START ((*b1
))) - (BLOCK_START ((*b2
)));
3886 return (BLOCK_END ((*b2
))) - (BLOCK_END ((*b1
)));
3890 /* Sort the blocks of a symtab S.
3891 Reorder the blocks in the blockvector by code-address,
3892 as required by some MI search routines */
3898 struct blockvector
*bv
= BLOCKVECTOR (s
);
3900 if (BLOCKVECTOR_NBLOCKS (bv
) <= 2)
3903 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) == 0)
3904 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = 0;
3905 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) == 0)
3906 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) = 0;
3910 * This is very unfortunate: normally all functions are compiled in
3911 * the order they are found, but if the file is compiled -O3 things
3912 * are very different. It would be nice to find a reliable test
3913 * to detect -O3 images in advance.
3915 if (BLOCKVECTOR_NBLOCKS (bv
) > 3)
3916 qsort (&BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
),
3917 BLOCKVECTOR_NBLOCKS (bv
) - FIRST_LOCAL_BLOCK
,
3918 sizeof (struct block
*),
3922 register CORE_ADDR high
= 0;
3923 register int i
, j
= BLOCKVECTOR_NBLOCKS (bv
);
3925 for (i
= FIRST_LOCAL_BLOCK
; i
< j
; i
++)
3926 if (high
< BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
)))
3927 high
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, i
));
3928 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) = high
;
3931 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)) =
3932 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, FIRST_LOCAL_BLOCK
));
3934 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3935 BLOCK_START (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3936 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)) =
3937 BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3941 /* Constructor/restructor/destructor procedures */
3943 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3944 MAXSYMS and linenumbers MAXLINES we'll put in it */
3946 static struct symtab
*
3947 new_symtab (name
, maxsyms
, maxlines
, objfile
)
3951 struct objfile
*objfile
;
3953 struct symtab
*s
= allocate_symtab (name
, objfile
);
3955 LINETABLE (s
) = new_linetable (maxlines
);
3957 /* All symtabs must have at least two blocks */
3958 BLOCKVECTOR (s
) = new_bvect (2);
3959 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
) = new_block (maxsyms
);
3960 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
) = new_block (maxsyms
);
3961 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)) =
3962 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3964 s
->free_code
= free_linetable
;
3969 /* Allocate a new partial_symtab NAME */
3971 static struct partial_symtab
*
3972 new_psymtab (name
, objfile
, section_offsets
)
3974 struct objfile
*objfile
;
3975 struct section_offsets
*section_offsets
;
3977 struct partial_symtab
*psymtab
;
3979 psymtab
= allocate_psymtab (name
, objfile
);
3980 psymtab
->section_offsets
= section_offsets
;
3982 /* Keep a backpointer to the file's symbols */
3984 psymtab
->read_symtab_private
= ((char *)
3985 obstack_alloc (&objfile
->psymbol_obstack
,
3986 sizeof (struct symloc
)));
3987 memset ((PTR
) psymtab
->read_symtab_private
, 0, sizeof (struct symloc
));
3988 CUR_BFD (psymtab
) = cur_bfd
;
3989 DEBUG_SWAP (psymtab
) = debug_swap
;
3990 DEBUG_INFO (psymtab
) = debug_info
;
3991 PENDING_LIST (psymtab
) = pending_list
;
3993 /* The way to turn this into a symtab is to call... */
3994 psymtab
->read_symtab
= mdebug_psymtab_to_symtab
;
3999 /* Allocate a linetable array of the given SIZE. Since the struct
4000 already includes one item, we subtract one when calculating the
4001 proper size to allocate. */
4003 static struct linetable
*
4004 new_linetable (size
)
4007 struct linetable
*l
;
4009 size
= (size
- 1) * sizeof (l
->item
) + sizeof (struct linetable
);
4010 l
= (struct linetable
*) xmalloc (size
);
4015 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4016 I am not so sure about the 3.4 ones.
4018 Since the struct linetable already includes one item, we subtract one when
4019 calculating the proper size to allocate. */
4021 static struct linetable
*
4022 shrink_linetable (lt
)
4023 struct linetable
*lt
;
4026 return (struct linetable
*) xrealloc ((PTR
) lt
,
4027 (sizeof (struct linetable
)
4029 * sizeof (lt
->item
))));
4032 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4034 static struct blockvector
*
4038 struct blockvector
*bv
;
4041 size
= sizeof (struct blockvector
) + nblocks
* sizeof (struct block
*);
4042 bv
= (struct blockvector
*) xzalloc (size
);
4044 BLOCKVECTOR_NBLOCKS (bv
) = nblocks
;
4049 /* Allocate and zero a new block of MAXSYMS symbols */
4051 static struct block
*
4055 int size
= sizeof (struct block
) + (maxsyms
- 1) * sizeof (struct symbol
*);
4057 return (struct block
*) xzalloc (size
);
4060 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4061 Shrink_block can also be used by add_symbol to grow a block. */
4063 static struct block
*
4069 struct blockvector
*bv
= BLOCKVECTOR (s
);
4072 /* Just reallocate it and fix references to the old one */
4074 new = (struct block
*) xrealloc ((PTR
) b
,
4075 (sizeof (struct block
)
4076 + ((BLOCK_NSYMS (b
) - 1)
4077 * sizeof (struct symbol
*))));
4079 /* Should chase pointers to old one. Fortunately, that`s just
4080 the block`s function and inferior blocks */
4081 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b
)
4082 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4083 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); i
++)
4084 if (BLOCKVECTOR_BLOCK (bv
, i
) == b
)
4085 BLOCKVECTOR_BLOCK (bv
, i
) = new;
4086 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) == b
)
4087 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv
, i
)) = new;
4091 /* Create a new symbol with printname NAME */
4093 static struct symbol
*
4097 struct symbol
*s
= ((struct symbol
*)
4098 obstack_alloc (¤t_objfile
->symbol_obstack
,
4099 sizeof (struct symbol
)));
4101 memset ((PTR
) s
, 0, sizeof (*s
));
4102 SYMBOL_NAME (s
) = name
;
4103 SYMBOL_LANGUAGE (s
) = psymtab_language
;
4104 SYMBOL_INIT_DEMANGLED_NAME (s
, ¤t_objfile
->symbol_obstack
);
4108 /* Create a new type with printname NAME */
4110 static struct type
*
4116 t
= alloc_type (current_objfile
);
4117 TYPE_NAME (t
) = name
;
4118 TYPE_CPLUS_SPECIFIC (t
) = (struct cplus_struct_type
*) &cplus_struct_default
;
4122 /* Read ECOFF debugging information from a BFD section. This is
4123 called from elfread.c. It parses the section into a
4124 ecoff_debug_info struct, and then lets the rest of the file handle
4128 elfmdebug_build_psymtabs (objfile
, swap
, sec
, section_offsets
)
4129 struct objfile
*objfile
;
4130 const struct ecoff_debug_swap
*swap
;
4132 struct section_offsets
*section_offsets
;
4134 bfd
*abfd
= objfile
->obfd
;
4135 struct ecoff_debug_info
*info
;
4137 info
= ((struct ecoff_debug_info
*)
4138 obstack_alloc (&objfile
->psymbol_obstack
,
4139 sizeof (struct ecoff_debug_info
)));
4141 if (!(*swap
->read_debug_info
) (abfd
, sec
, info
))
4142 error ("Error reading ECOFF debugging information: %s",
4143 bfd_errmsg (bfd_get_error ()));
4145 mdebug_build_psymtabs (objfile
, swap
, info
, section_offsets
);
4149 /* Things used for calling functions in the inferior.
4150 These functions are exported to our companion
4151 mips-tdep.c file and are here because they play
4152 with the symbol-table explicitly. */
4154 /* Sigtramp: make sure we have all the necessary information
4155 about the signal trampoline code. Since the official code
4156 from MIPS does not do so, we make up that information ourselves.
4157 If they fix the library (unlikely) this code will neutralize itself. */
4159 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4160 here because it calls functions defined in this file, but perhaps
4161 this could be handled in a better way. */
4168 struct block
*b
, *b0
= NULL
;
4170 sigtramp_address
= -1;
4172 /* We have to handle the following cases here:
4173 a) The Mips library has a sigtramp label within sigvec.
4174 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4175 s
= lookup_symbol ("sigvec", 0, VAR_NAMESPACE
, 0, NULL
);
4178 b0
= SYMBOL_BLOCK_VALUE (s
);
4179 s
= lookup_symbol ("sigtramp", b0
, VAR_NAMESPACE
, 0, NULL
);
4183 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4184 s
= lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE
, 0, NULL
);
4187 /* But maybe this program uses its own version of sigvec */
4191 /* Did we or MIPSco fix the library ? */
4192 if (SYMBOL_CLASS (s
) == LOC_BLOCK
)
4194 sigtramp_address
= BLOCK_START (SYMBOL_BLOCK_VALUE (s
));
4195 sigtramp_end
= BLOCK_END (SYMBOL_BLOCK_VALUE (s
));
4199 sigtramp_address
= SYMBOL_VALUE (s
);
4200 sigtramp_end
= sigtramp_address
+ 0x88; /* black magic */
4202 /* But what symtab does it live in ? */
4203 st
= find_pc_symtab (SYMBOL_VALUE (s
));
4206 * Ok, there goes the fix: turn it into a procedure, with all the
4207 * needed info. Note we make it a nested procedure of sigvec,
4208 * which is the way the (assembly) code is actually written.
4210 SYMBOL_NAMESPACE (s
) = VAR_NAMESPACE
;
4211 SYMBOL_CLASS (s
) = LOC_BLOCK
;
4212 SYMBOL_TYPE (s
) = init_type (TYPE_CODE_FUNC
, 4, 0, (char *) NULL
,
4214 TYPE_TARGET_TYPE (SYMBOL_TYPE (s
)) = mdebug_type_void
;
4216 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4218 SYMBOL_BLOCK_VALUE (s
) = b
;
4219 BLOCK_START (b
) = sigtramp_address
;
4220 BLOCK_END (b
) = sigtramp_end
;
4221 BLOCK_FUNCTION (b
) = s
;
4222 BLOCK_SUPERBLOCK (b
) = BLOCK_SUPERBLOCK (b0
);
4226 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4228 struct mips_extra_func_info
*e
=
4229 ((struct mips_extra_func_info
*)
4230 xzalloc (sizeof (struct mips_extra_func_info
)));
4232 e
->numargs
= 0; /* the kernel thinks otherwise */
4233 e
->pdr
.frameoffset
= 32;
4234 e
->pdr
.framereg
= SP_REGNUM
;
4235 /* Note that setting pcreg is no longer strictly necessary as
4236 mips_frame_saved_pc is now aware of signal handler frames. */
4237 e
->pdr
.pcreg
= PC_REGNUM
;
4238 e
->pdr
.regmask
= -2;
4239 /* Offset to saved r31, in the sigtramp case the saved registers
4240 are above the frame in the sigcontext.
4241 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4242 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4243 and 32 * 4 bytes for the floating point registers. */
4244 e
->pdr
.regoffset
= 4 + 12 + 31 * 4;
4245 e
->pdr
.fregmask
= -1;
4246 /* Offset to saved f30 (first saved *double* register). */
4247 e
->pdr
.fregoffset
= 4 + 12 + 32 * 4 + 12 + 30 * 4;
4248 e
->pdr
.isym
= (long) s
;
4249 e
->pdr
.adr
= sigtramp_address
;
4251 current_objfile
= st
->objfile
; /* Keep new_symbol happy */
4252 s
= new_symbol (MIPS_EFI_SYMBOL_NAME
);
4253 SYMBOL_VALUE (s
) = (long) e
;
4254 SYMBOL_NAMESPACE (s
) = LABEL_NAMESPACE
;
4255 SYMBOL_CLASS (s
) = LOC_CONST
;
4256 SYMBOL_TYPE (s
) = mdebug_type_void
;
4257 current_objfile
= NULL
;
4260 BLOCK_SYM (b
, BLOCK_NSYMS (b
)++) = s
;
4264 _initialize_mdebugread ()
4267 init_type (TYPE_CODE_VOID
, 1,
4269 "void", (struct objfile
*) NULL
);
4271 init_type (TYPE_CODE_INT
, 1,
4273 "char", (struct objfile
*) NULL
);
4274 mdebug_type_unsigned_char
=
4275 init_type (TYPE_CODE_INT
, 1,
4277 "unsigned char", (struct objfile
*) NULL
);
4279 init_type (TYPE_CODE_INT
, 2,
4281 "short", (struct objfile
*) NULL
);
4282 mdebug_type_unsigned_short
=
4283 init_type (TYPE_CODE_INT
, 2,
4285 "unsigned short", (struct objfile
*) NULL
);
4286 mdebug_type_int_32
=
4287 init_type (TYPE_CODE_INT
, 4,
4289 "int", (struct objfile
*) NULL
);
4290 mdebug_type_unsigned_int_32
=
4291 init_type (TYPE_CODE_INT
, 4,
4293 "unsigned int", (struct objfile
*) NULL
);
4294 mdebug_type_int_64
=
4295 init_type (TYPE_CODE_INT
, 8,
4297 "int", (struct objfile
*) NULL
);
4298 mdebug_type_unsigned_int_64
=
4299 init_type (TYPE_CODE_INT
, 8,
4301 "unsigned int", (struct objfile
*) NULL
);
4302 mdebug_type_long_32
=
4303 init_type (TYPE_CODE_INT
, 4,
4305 "long", (struct objfile
*) NULL
);
4306 mdebug_type_unsigned_long_32
=
4307 init_type (TYPE_CODE_INT
, 4,
4309 "unsigned long", (struct objfile
*) NULL
);
4310 mdebug_type_long_64
=
4311 init_type (TYPE_CODE_INT
, 8,
4313 "long", (struct objfile
*) NULL
);
4314 mdebug_type_unsigned_long_64
=
4315 init_type (TYPE_CODE_INT
, 8,
4317 "unsigned long", (struct objfile
*) NULL
);
4318 mdebug_type_long_long_64
=
4319 init_type (TYPE_CODE_INT
, 8,
4321 "long long", (struct objfile
*) NULL
);
4322 mdebug_type_unsigned_long_long_64
=
4323 init_type (TYPE_CODE_INT
, 8,
4325 "unsigned long long", (struct objfile
*) NULL
);
4326 mdebug_type_adr_32
=
4327 init_type (TYPE_CODE_PTR
, 4,
4329 "adr_32", (struct objfile
*) NULL
);
4330 TYPE_TARGET_TYPE (mdebug_type_adr_32
) = mdebug_type_void
;
4331 mdebug_type_adr_64
=
4332 init_type (TYPE_CODE_PTR
, 8,
4334 "adr_64", (struct objfile
*) NULL
);
4335 TYPE_TARGET_TYPE (mdebug_type_adr_64
) = mdebug_type_void
;
4337 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4339 "float", (struct objfile
*) NULL
);
4340 mdebug_type_double
=
4341 init_type (TYPE_CODE_FLT
, TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4343 "double", (struct objfile
*) NULL
);
4344 mdebug_type_complex
=
4345 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
4347 "complex", (struct objfile
*) NULL
);
4348 TYPE_TARGET_TYPE (mdebug_type_complex
) = mdebug_type_float
;
4349 mdebug_type_double_complex
=
4350 init_type (TYPE_CODE_COMPLEX
, 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4352 "double complex", (struct objfile
*) NULL
);
4353 TYPE_TARGET_TYPE (mdebug_type_double_complex
) = mdebug_type_double
;
4355 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4357 mdebug_type_string
=
4358 init_type (TYPE_CODE_STRING
,
4359 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
4361 (struct objfile
*) NULL
);
4363 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4364 good? Would we be better off with TYPE_CODE_ERROR? Should
4365 TYPE_CODE_ERROR print things in hex if it knows the size? */
4366 mdebug_type_fixed_dec
=
4367 init_type (TYPE_CODE_INT
,
4368 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4370 (struct objfile
*) NULL
);
4372 mdebug_type_float_dec
=
4373 init_type (TYPE_CODE_ERROR
,
4374 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
4375 0, "floating decimal",
4376 (struct objfile
*) NULL
);
4378 nodebug_func_symbol_type
= init_type (TYPE_CODE_FUNC
, 1, 0,
4379 "<function, no debug info>", NULL
);
4380 TYPE_TARGET_TYPE (nodebug_func_symbol_type
) = mdebug_type_int
;
4381 nodebug_var_symbol_type
=
4382 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ HOST_CHAR_BIT
, 0,
4383 "<variable, no debug info>", NULL
);