1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Support routines for reading and decoding debugging information in
24 the "stabs" format. This format is used with many systems that use
25 the a.out object file format, as well as some systems that use
26 COFF or ELF where the stabs data is placed in a special section.
27 Avoid placing any object file format specific code in this file. */
30 #include "gdb_string.h"
35 #include "expression.h"
38 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
40 #include "aout/aout64.h"
41 #include "gdb-stabs.h"
43 #include "complaints.h"
50 /* Ask stabsread.h to define the vars it normally declares `extern'. */
53 #include "stabsread.h" /* Our own declarations */
56 extern void _initialize_stabsread (void);
58 /* The routines that read and process a complete stabs for a C struct or
59 C++ class pass lists of data member fields and lists of member function
60 fields in an instance of a field_info structure, as defined below.
61 This is part of some reorganization of low level C++ support and is
62 expected to eventually go away... (FIXME) */
68 struct nextfield
*next
;
70 /* This is the raw visibility from the stab. It is not checked
71 for being one of the visibilities we recognize, so code which
72 examines this field better be able to deal. */
78 struct next_fnfieldlist
80 struct next_fnfieldlist
*next
;
81 struct fn_fieldlist fn_fieldlist
;
87 read_one_struct_field (struct field_info
*, char **, char *,
88 struct type
*, struct objfile
*);
90 static char *get_substring (char **, int);
92 static struct type
*dbx_alloc_type (int[2], struct objfile
*);
94 static long read_huge_number (char **, int, int *);
96 static struct type
*error_type (char **, struct objfile
*);
99 patch_block_stabs (struct pending
*, struct pending_stabs
*,
102 static void fix_common_block (struct symbol
*, int);
104 static int read_type_number (char **, int *);
106 static struct type
*read_range_type (char **, int[2], struct objfile
*);
108 static struct type
*read_sun_builtin_type (char **, int[2], struct objfile
*);
110 static struct type
*read_sun_floating_type (char **, int[2],
113 static struct type
*read_enum_type (char **, struct type
*, struct objfile
*);
115 static struct type
*rs6000_builtin_type (int);
118 read_member_functions (struct field_info
*, char **, struct type
*,
122 read_struct_fields (struct field_info
*, char **, struct type
*,
126 read_baseclasses (struct field_info
*, char **, struct type
*,
130 read_tilde_fields (struct field_info
*, char **, struct type
*,
133 static int attach_fn_fields_to_type (struct field_info
*, struct type
*);
136 attach_fields_to_type (struct field_info
*, struct type
*, struct objfile
*);
138 static struct type
*read_struct_type (char **, struct type
*,
141 static struct type
*read_array_type (char **, struct type
*,
144 static struct type
**read_args (char **, int, struct objfile
*);
147 read_cpp_abbrev (struct field_info
*, char **, struct type
*,
150 /* new functions added for cfront support */
153 copy_cfront_struct_fields (struct field_info
*, struct type
*,
156 static char *get_cfront_method_physname (char *);
159 read_cfront_baseclasses (struct field_info
*, char **,
160 struct type
*, struct objfile
*);
163 read_cfront_static_fields (struct field_info
*, char **,
164 struct type
*, struct objfile
*);
166 read_cfront_member_functions (struct field_info
*, char **,
167 struct type
*, struct objfile
*);
169 /* end new functions added for cfront support */
172 add_live_range (struct objfile
*, struct symbol
*, CORE_ADDR
, CORE_ADDR
);
174 static int resolve_live_range (struct objfile
*, struct symbol
*, char *);
176 static int process_reference (char **string
);
178 static CORE_ADDR
ref_search_value (int refnum
);
181 resolve_symbol_reference (struct objfile
*, struct symbol
*, char *);
183 void stabsread_clear_cache (void);
185 static const char vptr_name
[] =
186 {'_', 'v', 'p', 't', 'r', CPLUS_MARKER
, '\0'};
187 static const char vb_name
[] =
188 {'_', 'v', 'b', CPLUS_MARKER
, '\0'};
190 /* Define this as 1 if a pcc declaration of a char or short argument
191 gives the correct address. Otherwise assume pcc gives the
192 address of the corresponding int, which is not the same on a
193 big-endian machine. */
195 #if !defined (BELIEVE_PCC_PROMOTION)
196 #define BELIEVE_PCC_PROMOTION 0
198 #if !defined (BELIEVE_PCC_PROMOTION_TYPE)
199 #define BELIEVE_PCC_PROMOTION_TYPE 0
202 static struct complaint invalid_cpp_abbrev_complaint
=
203 {"invalid C++ abbreviation `%s'", 0, 0};
205 static struct complaint invalid_cpp_type_complaint
=
206 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
208 static struct complaint member_fn_complaint
=
209 {"member function type missing, got '%c'", 0, 0};
211 static struct complaint const_vol_complaint
=
212 {"const/volatile indicator missing, got '%c'", 0, 0};
214 static struct complaint error_type_complaint
=
215 {"debug info mismatch between compiler and debugger", 0, 0};
217 static struct complaint invalid_member_complaint
=
218 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
220 static struct complaint range_type_base_complaint
=
221 {"base type %d of range type is not defined", 0, 0};
223 static struct complaint reg_value_complaint
=
224 {"register number %d too large (max %d) in symbol %s", 0, 0};
226 static struct complaint vtbl_notfound_complaint
=
227 {"virtual function table pointer not found when defining class `%s'", 0, 0};
229 static struct complaint unrecognized_cplus_name_complaint
=
230 {"Unknown C++ symbol name `%s'", 0, 0};
232 static struct complaint rs6000_builtin_complaint
=
233 {"Unknown builtin type %d", 0, 0};
235 static struct complaint unresolved_sym_chain_complaint
=
236 {"%s: common block `%s' from global_sym_chain unresolved", 0, 0};
238 static struct complaint stabs_general_complaint
=
241 static struct complaint lrs_general_complaint
=
244 /* Make a list of forward references which haven't been defined. */
246 static struct type
**undef_types
;
247 static int undef_types_allocated
;
248 static int undef_types_length
;
249 static struct symbol
*current_symbol
= NULL
;
251 /* Check for and handle cretinous stabs symbol name continuation! */
252 #define STABS_CONTINUE(pp,objfile) \
254 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
255 *(pp) = next_symbol_text (objfile); \
258 /* FIXME: These probably should be our own types (like rs6000_builtin_type
259 has its own types) rather than builtin_type_*. */
260 static struct type
**os9k_type_vector
[] =
267 &builtin_type_unsigned_char
,
268 &builtin_type_unsigned_short
,
269 &builtin_type_unsigned_long
,
270 &builtin_type_unsigned_int
,
272 &builtin_type_double
,
274 &builtin_type_long_double
277 static void os9k_init_type_vector (struct type
**);
280 os9k_init_type_vector (struct type
**tv
)
283 for (i
= 0; i
< sizeof (os9k_type_vector
) / sizeof (struct type
**); i
++)
284 tv
[i
] = (os9k_type_vector
[i
] == 0 ? 0 : *(os9k_type_vector
[i
]));
287 /* Look up a dbx type-number pair. Return the address of the slot
288 where the type for that number-pair is stored.
289 The number-pair is in TYPENUMS.
291 This can be used for finding the type associated with that pair
292 or for associating a new type with the pair. */
295 dbx_lookup_type (int typenums
[2])
297 register int filenum
= typenums
[0];
298 register int index
= typenums
[1];
300 register int real_filenum
;
301 register struct header_file
*f
;
304 if (filenum
== -1) /* -1,-1 is for temporary types. */
307 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
309 static struct complaint msg
=
311 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
313 complain (&msg
, filenum
, index
, symnum
);
321 /* Caller wants address of address of type. We think
322 that negative (rs6k builtin) types will never appear as
323 "lvalues", (nor should they), so we stuff the real type
324 pointer into a temp, and return its address. If referenced,
325 this will do the right thing. */
326 static struct type
*temp_type
;
328 temp_type
= rs6000_builtin_type (index
);
332 /* Type is defined outside of header files.
333 Find it in this object file's type vector. */
334 if (index
>= type_vector_length
)
336 old_len
= type_vector_length
;
339 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
340 type_vector
= (struct type
**)
341 xmalloc (type_vector_length
* sizeof (struct type
*));
343 while (index
>= type_vector_length
)
345 type_vector_length
*= 2;
347 type_vector
= (struct type
**)
348 xrealloc ((char *) type_vector
,
349 (type_vector_length
* sizeof (struct type
*)));
350 memset (&type_vector
[old_len
], 0,
351 (type_vector_length
- old_len
) * sizeof (struct type
*));
354 /* Deal with OS9000 fundamental types. */
355 os9k_init_type_vector (type_vector
);
357 return (&type_vector
[index
]);
361 real_filenum
= this_object_header_files
[filenum
];
363 if (real_filenum
>= N_HEADER_FILES (current_objfile
))
365 struct type
*temp_type
;
366 struct type
**temp_type_p
;
368 warning ("GDB internal error: bad real_filenum");
371 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
372 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
373 *temp_type_p
= temp_type
;
377 f
= HEADER_FILES (current_objfile
) + real_filenum
;
379 f_orig_length
= f
->length
;
380 if (index
>= f_orig_length
)
382 while (index
>= f
->length
)
386 f
->vector
= (struct type
**)
387 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
388 memset (&f
->vector
[f_orig_length
], 0,
389 (f
->length
- f_orig_length
) * sizeof (struct type
*));
391 return (&f
->vector
[index
]);
395 /* Make sure there is a type allocated for type numbers TYPENUMS
396 and return the type object.
397 This can create an empty (zeroed) type object.
398 TYPENUMS may be (-1, -1) to return a new type object that is not
399 put into the type vector, and so may not be referred to by number. */
402 dbx_alloc_type (int typenums
[2], struct objfile
*objfile
)
404 register struct type
**type_addr
;
406 if (typenums
[0] == -1)
408 return (alloc_type (objfile
));
411 type_addr
= dbx_lookup_type (typenums
);
413 /* If we are referring to a type not known at all yet,
414 allocate an empty type for it.
415 We will fill it in later if we find out how. */
418 *type_addr
= alloc_type (objfile
);
424 /* for all the stabs in a given stab vector, build appropriate types
425 and fix their symbols in given symbol vector. */
428 patch_block_stabs (struct pending
*symbols
, struct pending_stabs
*stabs
,
429 struct objfile
*objfile
)
439 /* for all the stab entries, find their corresponding symbols and
440 patch their types! */
442 for (ii
= 0; ii
< stabs
->count
; ++ii
)
444 name
= stabs
->stab
[ii
];
445 pp
= (char *) strchr (name
, ':');
449 pp
= (char *) strchr (pp
, ':');
451 sym
= find_symbol_in_list (symbols
, name
, pp
- name
);
454 /* FIXME-maybe: it would be nice if we noticed whether
455 the variable was defined *anywhere*, not just whether
456 it is defined in this compilation unit. But neither
457 xlc or GCC seem to need such a definition, and until
458 we do psymtabs (so that the minimal symbols from all
459 compilation units are available now), I'm not sure
460 how to get the information. */
462 /* On xcoff, if a global is defined and never referenced,
463 ld will remove it from the executable. There is then
464 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
465 sym
= (struct symbol
*)
466 obstack_alloc (&objfile
->symbol_obstack
,
467 sizeof (struct symbol
));
469 memset (sym
, 0, sizeof (struct symbol
));
470 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
471 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
473 obsavestring (name
, pp
- name
, &objfile
->symbol_obstack
);
475 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
477 /* I don't think the linker does this with functions,
478 so as far as I know this is never executed.
479 But it doesn't hurt to check. */
481 lookup_function_type (read_type (&pp
, objfile
));
485 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
487 add_symbol_to_list (sym
, &global_symbols
);
492 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
495 lookup_function_type (read_type (&pp
, objfile
));
499 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
507 /* Read a number by which a type is referred to in dbx data,
508 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
509 Just a single number N is equivalent to (0,N).
510 Return the two numbers by storing them in the vector TYPENUMS.
511 TYPENUMS will then be used as an argument to dbx_lookup_type.
513 Returns 0 for success, -1 for error. */
516 read_type_number (register char **pp
, register int *typenums
)
522 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
525 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
532 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
540 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
541 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
542 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
543 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
545 #define CFRONT_VISIBILITY_PRIVATE '2' /* Stabs character for private field */
546 #define CFRONT_VISIBILITY_PUBLIC '1' /* Stabs character for public field */
548 /* This code added to support parsing of ARM/Cfront stabs strings */
550 /* Get substring from string up to char c, advance string pointer past
554 get_substring (char **p
, int c
)
569 /* Physname gets strcat'd onto sname in order to recreate the mangled
570 name (see funtion gdb_mangle_name in gdbtypes.c). For cfront, make
571 the physname look like that of g++ - take out the initial mangling
572 eg: for sname="a" and fname="foo__1aFPFs_i" return "FPFs_i" */
575 get_cfront_method_physname (char *fname
)
578 /* FIXME would like to make this generic for g++ too, but
579 that is already handled in read_member_funcctions */
582 /* search ahead to find the start of the mangled suffix */
583 if (*p
== '_' && *(p
+ 1) == '_') /* compiler generated; probably a ctor/dtor */
585 while (p
&& (unsigned) ((p
+ 1) - fname
) < strlen (fname
) && *(p
+ 1) != '_')
587 if (!(p
&& *p
== '_' && *(p
+ 1) == '_'))
588 error ("Invalid mangled function name %s", fname
);
589 p
+= 2; /* advance past '__' */
591 /* struct name length and name of type should come next; advance past it */
594 len
= len
* 10 + (*p
- '0');
602 /* Read base classes within cfront class definition.
603 eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
606 A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
611 read_cfront_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
612 struct objfile
*objfile
)
614 static struct complaint msg_unknown
=
616 Unsupported token in stabs string %s.\n",
618 static struct complaint msg_notfound
=
620 Unable to find base type for %s.\n",
625 struct nextfield
*new;
627 if (**pp
== ';') /* no base classes; return */
633 /* first count base classes so we can allocate space before parsing */
634 for (p
= *pp
; p
&& *p
&& *p
!= ';'; p
++)
639 bnum
++; /* add one more for last one */
641 /* now parse the base classes until we get to the start of the methods
642 (code extracted and munged from read_baseclasses) */
643 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
644 TYPE_N_BASECLASSES (type
) = bnum
;
648 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
651 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
652 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
654 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
656 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
658 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
659 make_cleanup (xfree
, new);
660 memset (new, 0, sizeof (struct nextfield
));
661 new->next
= fip
->list
;
663 FIELD_BITSIZE (new->field
) = 0; /* this should be an unpacked field! */
665 STABS_CONTINUE (pp
, objfile
);
667 /* virtual? eg: v2@Bvir */
670 SET_TYPE_FIELD_VIRTUAL (type
, i
);
674 /* access? eg: 2@Bvir */
675 /* Note: protected inheritance not supported in cfront */
678 case CFRONT_VISIBILITY_PRIVATE
:
679 new->visibility
= VISIBILITY_PRIVATE
;
681 case CFRONT_VISIBILITY_PUBLIC
:
682 new->visibility
= VISIBILITY_PUBLIC
;
685 /* Bad visibility format. Complain and treat it as
688 static struct complaint msg
=
690 "Unknown visibility `%c' for baseclass", 0, 0};
691 complain (&msg
, new->visibility
);
692 new->visibility
= VISIBILITY_PUBLIC
;
696 /* "@" comes next - eg: @Bvir */
699 complain (&msg_unknown
, *pp
);
705 /* Set the bit offset of the portion of the object corresponding
706 to this baseclass. Always zero in the absence of
707 multiple inheritance. */
708 /* Unable to read bit position from stabs;
709 Assuming no multiple inheritance for now FIXME! */
710 /* We may have read this in the structure definition;
711 now we should fixup the members to be the actual base classes */
712 FIELD_BITPOS (new->field
) = 0;
714 /* Get the base class name and type */
716 char *bname
; /* base class name */
717 struct symbol
*bsym
; /* base class */
719 p1
= strchr (*pp
, ' ');
720 p2
= strchr (*pp
, ';');
722 bname
= get_substring (pp
, ' ');
724 bname
= get_substring (pp
, ';');
725 if (!bname
|| !*bname
)
727 complain (&msg_unknown
, *pp
);
730 /* FIXME! attach base info to type */
731 bsym
= lookup_symbol (bname
, 0, STRUCT_NAMESPACE
, 0, 0); /*demangled_name */
734 new->field
.type
= SYMBOL_TYPE (bsym
);
735 new->field
.name
= type_name_no_tag (new->field
.type
);
739 complain (&msg_notfound
, *pp
);
744 /* If more base classes to parse, loop again.
745 We ate the last ' ' or ';' in get_substring,
746 so on exit we will have skipped the trailing ';' */
747 /* if invalid, return 0; add code to detect - FIXME! */
752 /* read cfront member functions.
753 pp points to string starting with list of functions
754 eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
755 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
756 A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
757 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
761 read_cfront_member_functions (struct field_info
*fip
, char **pp
,
762 struct type
*type
, struct objfile
*objfile
)
764 /* This code extracted from read_member_functions
765 so as to do the similar thing for our funcs */
769 /* Total number of member functions defined in this class. If the class
770 defines two `f' functions, and one `g' function, then this will have
772 int total_length
= 0;
776 struct next_fnfield
*next
;
777 struct fn_field fn_field
;
780 struct type
*look_ahead_type
;
781 struct next_fnfieldlist
*new_fnlist
;
782 struct next_fnfield
*new_sublist
;
785 struct symbol
*ref_func
= 0;
787 /* Process each list until we find the end of the member functions.
788 eg: p = "__ct__1AFv foo__1AFv ;;;" */
790 STABS_CONTINUE (pp
, objfile
); /* handle \\ */
792 while (**pp
!= ';' && (fname
= get_substring (pp
, ' '), fname
))
795 int sublist_count
= 0;
797 if (fname
[0] == '*') /* static member */
803 ref_func
= lookup_symbol (fname
, 0, VAR_NAMESPACE
, 0, 0); /* demangled name */
806 static struct complaint msg
=
808 Unable to find function symbol for %s\n",
810 complain (&msg
, fname
);
814 look_ahead_type
= NULL
;
817 new_fnlist
= (struct next_fnfieldlist
*)
818 xmalloc (sizeof (struct next_fnfieldlist
));
819 make_cleanup (xfree
, new_fnlist
);
820 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
822 /* The following is code to work around cfront generated stabs.
823 The stabs contains full mangled name for each field.
824 We try to demangle the name and extract the field name out of it. */
826 char *dem
, *dem_p
, *dem_args
;
828 dem
= cplus_demangle (fname
, DMGL_ANSI
| DMGL_PARAMS
);
831 dem_p
= strrchr (dem
, ':');
832 if (dem_p
!= 0 && *(dem_p
- 1) == ':')
834 /* get rid of args */
835 dem_args
= strchr (dem_p
, '(');
836 if (dem_args
== NULL
)
837 dem_len
= strlen (dem_p
);
839 dem_len
= dem_args
- dem_p
;
841 obsavestring (dem_p
, dem_len
, &objfile
->type_obstack
);
846 obsavestring (fname
, strlen (fname
), &objfile
->type_obstack
);
848 } /* end of code for cfront work around */
850 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
852 /*-------------------------------------------------*/
853 /* Set up the sublists
854 Sublists are stuff like args, static, visibility, etc.
855 so in ARM, we have to set that info some other way.
856 Multiple sublists happen if overloading
857 eg: foo::26=##1;:;2A.;
858 In g++, we'd loop here thru all the sublists... */
861 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
862 make_cleanup (xfree
, new_sublist
);
863 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
865 /* eat 1; from :;2A.; */
866 new_sublist
->fn_field
.type
= SYMBOL_TYPE (ref_func
); /* normally takes a read_type */
867 /* Make this type look like a method stub for gdb */
868 TYPE_FLAGS (new_sublist
->fn_field
.type
) |= TYPE_FLAG_STUB
;
869 TYPE_CODE (new_sublist
->fn_field
.type
) = TYPE_CODE_METHOD
;
871 /* If this is just a stub, then we don't have the real name here. */
872 if (TYPE_STUB (new_sublist
->fn_field
.type
))
874 if (!TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
))
875 TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
) = type
;
876 new_sublist
->fn_field
.is_stub
= 1;
879 /* physname used later in mangling; eg PFs_i,5 for foo__1aFPFs_i
880 physname gets strcat'd in order to recreate the onto mangled name */
881 pname
= get_cfront_method_physname (fname
);
882 new_sublist
->fn_field
.physname
= savestring (pname
, strlen (pname
));
885 /* Set this member function's visibility fields.
886 Unable to distinguish access from stabs definition!
887 Assuming public for now. FIXME!
888 (for private, set new_sublist->fn_field.is_private = 1,
889 for public, set new_sublist->fn_field.is_protected = 1) */
891 /* Unable to distinguish const/volatile from stabs definition!
892 Assuming normal for now. FIXME! */
894 new_sublist
->fn_field
.is_const
= 0;
895 new_sublist
->fn_field
.is_volatile
= 0; /* volatile not implemented in cfront */
897 /* Set virtual/static function info
898 How to get vtable offsets ?
899 Assuming normal for now FIXME!!
900 For vtables, figure out from whence this virtual function came.
901 It may belong to virtual function table of
902 one of its baseclasses.
904 new_sublist -> fn_field.voffset = vtable offset,
905 new_sublist -> fn_field.fcontext = look_ahead_type;
906 where look_ahead_type is type of baseclass */
908 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
909 else /* normal member function. */
910 new_sublist
->fn_field
.voffset
= 0;
911 new_sublist
->fn_field
.fcontext
= 0;
914 /* Prepare new sublist */
915 new_sublist
->next
= sublist
;
916 sublist
= new_sublist
;
919 /* In g++, we loop thu sublists - now we set from functions. */
920 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
921 obstack_alloc (&objfile
->type_obstack
,
922 sizeof (struct fn_field
) * length
);
923 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
924 sizeof (struct fn_field
) * length
);
925 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
927 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
930 new_fnlist
->fn_fieldlist
.length
= length
;
931 new_fnlist
->next
= fip
->fnlist
;
932 fip
->fnlist
= new_fnlist
;
934 total_length
+= length
;
935 STABS_CONTINUE (pp
, objfile
); /* handle \\ */
940 /* type should already have space */
941 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
942 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
943 memset (TYPE_FN_FIELDLISTS (type
), 0,
944 sizeof (struct fn_fieldlist
) * nfn_fields
);
945 TYPE_NFN_FIELDS (type
) = nfn_fields
;
946 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
949 /* end of scope for reading member func */
953 /* Skip trailing ';' and bump count of number of fields seen */
961 /* This routine fixes up partial cfront types that were created
962 while parsing the stabs. The main need for this function is
963 to add information such as methods to classes.
964 Examples of "p": "sA;;__ct__1AFv foo__1AFv ;;;" */
966 resolve_cfront_continuation (struct objfile
*objfile
, struct symbol
*sym
,
969 struct symbol
*ref_sym
= 0;
971 /* snarfed from read_struct_type */
972 struct field_info fi
;
974 struct cleanup
*back_to
;
976 /* Need to make sure that fi isn't gunna conflict with struct
977 in case struct already had some fnfs */
980 back_to
= make_cleanup (null_cleanup
, 0);
982 /* We only accept structs, classes and unions at the moment.
983 Other continuation types include t (typedef), r (long dbl), ...
984 We may want to add support for them as well;
985 right now they are handled by duplicating the symbol information
986 into the type information (see define_symbol) */
987 if (*p
!= 's' /* structs */
988 && *p
!= 'c' /* class */
989 && *p
!= 'u') /* union */
990 return 0; /* only handle C++ types */
993 /* Get symbol typs name and validate
994 eg: p = "A;;__ct__1AFv foo__1AFv ;;;" */
995 sname
= get_substring (&p
, ';');
996 if (!sname
|| strcmp (sname
, SYMBOL_NAME (sym
)))
997 error ("Internal error: base symbol type name does not match\n");
999 /* Find symbol's internal gdb reference using demangled_name.
1000 This is the real sym that we want;
1001 sym was a temp hack to make debugger happy */
1002 ref_sym
= lookup_symbol (SYMBOL_NAME (sym
), 0, STRUCT_NAMESPACE
, 0, 0);
1003 type
= SYMBOL_TYPE (ref_sym
);
1006 /* Now read the baseclasses, if any, read the regular C struct or C++
1007 class member fields, attach the fields to the type, read the C++
1008 member functions, attach them to the type, and then read any tilde
1009 field (baseclass specifier for the class holding the main vtable). */
1011 if (!read_cfront_baseclasses (&fi
, &p
, type
, objfile
)
1012 /* g++ does this next, but cfront already did this:
1013 || !read_struct_fields (&fi, &p, type, objfile) */
1014 || !copy_cfront_struct_fields (&fi
, type
, objfile
)
1015 || !read_cfront_member_functions (&fi
, &p
, type
, objfile
)
1016 || !read_cfront_static_fields (&fi
, &p
, type
, objfile
)
1017 || !attach_fields_to_type (&fi
, type
, objfile
)
1018 || !attach_fn_fields_to_type (&fi
, type
)
1019 /* g++ does this next, but cfront doesn't seem to have this:
1020 || !read_tilde_fields (&fi, &p, type, objfile) */
1023 type
= error_type (&p
, objfile
);
1026 do_cleanups (back_to
);
1029 /* End of code added to support parsing of ARM/Cfront stabs strings */
1032 /* This routine fixes up symbol references/aliases to point to the original
1033 symbol definition. Returns 0 on failure, non-zero on success. */
1036 resolve_symbol_reference (struct objfile
*objfile
, struct symbol
*sym
, char *p
)
1039 struct symbol
*ref_sym
= 0;
1040 struct alias_list
*alias
;
1042 /* If this is not a symbol reference return now. */
1046 /* Use "#<num>" as the name; we'll fix the name later.
1047 We stored the original symbol name as "#<id>=<name>"
1048 so we can now search for "#<id>" to resolving the reference.
1049 We'll fix the names later by removing the "#<id>" or "#<id>=" */
1051 /*---------------------------------------------------------*/
1052 /* Get the reference id number, and
1053 advance p past the names so we can parse the rest.
1054 eg: id=2 for p : "2=", "2=z:r(0,1)" "2:r(0,1);l(#5,#6),l(#7,#4)" */
1055 /*---------------------------------------------------------*/
1057 /* This gets reference name from string. sym may not have a name. */
1059 /* Get the reference number associated with the reference id in the
1060 gdb stab string. From that reference number, get the main/primary
1061 symbol for this alias. */
1062 refnum
= process_reference (&p
);
1063 ref_sym
= ref_search (refnum
);
1066 complain (&lrs_general_complaint
, "symbol for reference not found");
1070 /* Parse the stab of the referencing symbol
1071 now that we have the referenced symbol.
1072 Add it as a new symbol and a link back to the referenced symbol.
1073 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1076 /* If the stab symbol table and string contain:
1077 RSYM 0 5 00000000 868 #15=z:r(0,1)
1078 LBRAC 0 0 00000000 899 #5=
1079 SLINE 0 16 00000003 923 #6=
1080 Then the same symbols can be later referenced by:
1081 RSYM 0 5 00000000 927 #15:r(0,1);l(#5,#6)
1082 This is used in live range splitting to:
1083 1) specify that a symbol (#15) is actually just a new storage
1084 class for a symbol (#15=z) which was previously defined.
1085 2) specify that the beginning and ending ranges for a symbol
1086 (#15) are the values of the beginning (#5) and ending (#6)
1089 /* Read number as reference id.
1090 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1091 /* FIXME! Might I want to use SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
1092 in case of "l(0,0)"? */
1094 /*--------------------------------------------------*/
1095 /* Add this symbol to the reference list. */
1096 /*--------------------------------------------------*/
1098 alias
= (struct alias_list
*) obstack_alloc (&objfile
->type_obstack
,
1099 sizeof (struct alias_list
));
1102 complain (&lrs_general_complaint
, "Unable to allocate alias list memory");
1109 if (!SYMBOL_ALIASES (ref_sym
))
1111 SYMBOL_ALIASES (ref_sym
) = alias
;
1115 struct alias_list
*temp
;
1117 /* Get to the end of the list. */
1118 for (temp
= SYMBOL_ALIASES (ref_sym
);
1125 /* Want to fix up name so that other functions (eg. valops)
1126 will correctly print the name.
1127 Don't add_symbol_to_list so that lookup_symbol won't find it.
1128 nope... needed for fixups. */
1129 SYMBOL_NAME (sym
) = SYMBOL_NAME (ref_sym
);
1135 /* Structure for storing pointers to reference definitions for fast lookup
1136 during "process_later". */
1145 #define MAX_CHUNK_REFS 100
1146 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
1147 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
1149 static struct ref_map
*ref_map
;
1151 /* Ptr to free cell in chunk's linked list. */
1152 static int ref_count
= 0;
1154 /* Number of chunks malloced. */
1155 static int ref_chunk
= 0;
1157 /* This file maintains a cache of stabs aliases found in the symbol
1158 table. If the symbol table changes, this cache must be cleared
1159 or we are left holding onto data in invalid obstacks. */
1161 stabsread_clear_cache (void)
1167 /* Create array of pointers mapping refids to symbols and stab strings.
1168 Add pointers to reference definition symbols and/or their values as we
1169 find them, using their reference numbers as our index.
1170 These will be used later when we resolve references. */
1172 ref_add (int refnum
, struct symbol
*sym
, char *stabs
, CORE_ADDR value
)
1176 if (refnum
>= ref_count
)
1177 ref_count
= refnum
+ 1;
1178 if (ref_count
> ref_chunk
* MAX_CHUNK_REFS
)
1180 int new_slots
= ref_count
- ref_chunk
* MAX_CHUNK_REFS
;
1181 int new_chunks
= new_slots
/ MAX_CHUNK_REFS
+ 1;
1182 ref_map
= (struct ref_map
*)
1183 xrealloc (ref_map
, REF_MAP_SIZE (ref_chunk
+ new_chunks
));
1184 memset (ref_map
+ ref_chunk
* MAX_CHUNK_REFS
, 0, new_chunks
* REF_CHUNK_SIZE
);
1185 ref_chunk
+= new_chunks
;
1187 ref_map
[refnum
].stabs
= stabs
;
1188 ref_map
[refnum
].sym
= sym
;
1189 ref_map
[refnum
].value
= value
;
1192 /* Return defined sym for the reference REFNUM. */
1194 ref_search (int refnum
)
1196 if (refnum
< 0 || refnum
> ref_count
)
1198 return ref_map
[refnum
].sym
;
1201 /* Return value for the reference REFNUM. */
1204 ref_search_value (int refnum
)
1206 if (refnum
< 0 || refnum
> ref_count
)
1208 return ref_map
[refnum
].value
;
1211 /* Parse a reference id in STRING and return the resulting
1212 reference number. Move STRING beyond the reference id. */
1215 process_reference (char **string
)
1220 if (**string
!= '#')
1223 /* Advance beyond the initial '#'. */
1226 /* Read number as reference id. */
1227 while (*p
&& isdigit (*p
))
1229 refnum
= refnum
* 10 + *p
- '0';
1236 /* If STRING defines a reference, store away a pointer to the reference
1237 definition for later use. Return the reference number. */
1240 symbol_reference_defined (char **string
)
1245 refnum
= process_reference (&p
);
1247 /* Defining symbols end in '=' */
1250 /* Symbol is being defined here. */
1256 /* Must be a reference. Either the symbol has already been defined,
1257 or this is a forward reference to it. */
1265 define_symbol (CORE_ADDR valu
, char *string
, int desc
, int type
,
1266 struct objfile
*objfile
)
1268 register struct symbol
*sym
;
1269 char *p
= (char *) strchr (string
, ':');
1274 /* We would like to eliminate nameless symbols, but keep their types.
1275 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
1276 to type 2, but, should not create a symbol to address that type. Since
1277 the symbol will be nameless, there is no way any user can refer to it. */
1281 /* Ignore syms with empty names. */
1285 /* Ignore old-style symbols from cc -go */
1292 p
= strchr (p
, ':');
1295 /* If a nameless stab entry, all we need is the type, not the symbol.
1296 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
1297 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
1299 current_symbol
= sym
= (struct symbol
*)
1300 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
1301 memset (sym
, 0, sizeof (struct symbol
));
1303 switch (type
& N_TYPE
)
1306 SYMBOL_SECTION (sym
) = SECT_OFF_TEXT (objfile
);
1309 SYMBOL_SECTION (sym
) = SECT_OFF_DATA (objfile
);
1312 SYMBOL_SECTION (sym
) = SECT_OFF_BSS (objfile
);
1316 if (processing_gcc_compilation
)
1318 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
1319 number of bytes occupied by a type or object, which we ignore. */
1320 SYMBOL_LINE (sym
) = desc
;
1324 SYMBOL_LINE (sym
) = 0; /* unknown */
1327 if (is_cplus_marker (string
[0]))
1329 /* Special GNU C++ names. */
1333 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
1334 &objfile
->symbol_obstack
);
1337 case 'v': /* $vtbl_ptr_type */
1338 /* Was: SYMBOL_NAME (sym) = "vptr"; */
1342 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
1343 &objfile
->symbol_obstack
);
1347 /* This was an anonymous type that was never fixed up. */
1350 #ifdef STATIC_TRANSFORM_NAME
1352 /* SunPRO (3.0 at least) static variable encoding. */
1357 complain (&unrecognized_cplus_name_complaint
, string
);
1358 goto normal
; /* Do *something* with it */
1361 else if (string
[0] == '#')
1363 /* Special GNU C extension for referencing symbols. */
1367 /* If STRING defines a new reference id, then add it to the
1368 reference map. Else it must be referring to a previously
1369 defined symbol, so add it to the alias list of the previously
1372 refnum
= symbol_reference_defined (&s
);
1374 ref_add (refnum
, sym
, string
, SYMBOL_VALUE (sym
));
1375 else if (!resolve_symbol_reference (objfile
, sym
, string
))
1378 /* S..P contains the name of the symbol. We need to store
1379 the correct name into SYMBOL_NAME. */
1385 SYMBOL_NAME (sym
) = (char *)
1386 obstack_alloc (&objfile
->symbol_obstack
, nlen
);
1387 strncpy (SYMBOL_NAME (sym
), s
, nlen
);
1388 SYMBOL_NAME (sym
)[nlen
] = '\0';
1389 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
1392 /* FIXME! Want SYMBOL_NAME (sym) = 0;
1393 Get error if leave name 0. So give it something. */
1396 SYMBOL_NAME (sym
) = (char *)
1397 obstack_alloc (&objfile
->symbol_obstack
, nlen
);
1398 strncpy (SYMBOL_NAME (sym
), string
, nlen
);
1399 SYMBOL_NAME (sym
)[nlen
] = '\0';
1400 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
1403 /* Advance STRING beyond the reference id. */
1409 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
1410 SYMBOL_NAME (sym
) = (char *)
1411 obstack_alloc (&objfile
->symbol_obstack
, ((p
- string
) + 1));
1412 /* Open-coded memcpy--saves function call time. */
1413 /* FIXME: Does it really? Try replacing with simple strcpy and
1414 try it on an executable with a large symbol table. */
1415 /* FIXME: considering that gcc can open code memcpy anyway, I
1416 doubt it. xoxorich. */
1418 register char *p1
= string
;
1419 register char *p2
= SYMBOL_NAME (sym
);
1427 /* If this symbol is from a C++ compilation, then attempt to cache the
1428 demangled form for future reference. This is a typical time versus
1429 space tradeoff, that was decided in favor of time because it sped up
1430 C++ symbol lookups by a factor of about 20. */
1432 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
1436 /* Determine the type of name being defined. */
1438 /* Getting GDB to correctly skip the symbol on an undefined symbol
1439 descriptor and not ever dump core is a very dodgy proposition if
1440 we do things this way. I say the acorn RISC machine can just
1441 fix their compiler. */
1442 /* The Acorn RISC machine's compiler can put out locals that don't
1443 start with "234=" or "(3,4)=", so assume anything other than the
1444 deftypes we know how to handle is a local. */
1445 if (!strchr ("cfFGpPrStTvVXCR", *p
))
1447 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1456 /* c is a special case, not followed by a type-number.
1457 SYMBOL:c=iVALUE for an integer constant symbol.
1458 SYMBOL:c=rVALUE for a floating constant symbol.
1459 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
1460 e.g. "b:c=e6,0" for "const b = blob1"
1461 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1464 SYMBOL_CLASS (sym
) = LOC_CONST
;
1465 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1466 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1467 add_symbol_to_list (sym
, &file_symbols
);
1475 double d
= atof (p
);
1478 /* FIXME-if-picky-about-floating-accuracy: Should be using
1479 target arithmetic to get the value. real.c in GCC
1480 probably has the necessary code. */
1482 /* FIXME: lookup_fundamental_type is a hack. We should be
1483 creating a type especially for the type of float constants.
1484 Problem is, what type should it be?
1486 Also, what should the name of this type be? Should we
1487 be using 'S' constants (see stabs.texinfo) instead? */
1489 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
1492 obstack_alloc (&objfile
->symbol_obstack
,
1493 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
1494 store_typed_floating (dbl_valu
, SYMBOL_TYPE (sym
), d
);
1495 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
1496 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
1501 /* Defining integer constants this way is kind of silly,
1502 since 'e' constants allows the compiler to give not
1503 only the value, but the type as well. C has at least
1504 int, long, unsigned int, and long long as constant
1505 types; other languages probably should have at least
1506 unsigned as well as signed constants. */
1508 /* We just need one int constant type for all objfiles.
1509 It doesn't depend on languages or anything (arguably its
1510 name should be a language-specific name for a type of
1511 that size, but I'm inclined to say that if the compiler
1512 wants a nice name for the type, it can use 'e'). */
1513 static struct type
*int_const_type
;
1515 /* Yes, this is as long as a *host* int. That is because we
1517 if (int_const_type
== NULL
)
1519 init_type (TYPE_CODE_INT
,
1520 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
1522 (struct objfile
*) NULL
);
1523 SYMBOL_TYPE (sym
) = int_const_type
;
1524 SYMBOL_VALUE (sym
) = atoi (p
);
1525 SYMBOL_CLASS (sym
) = LOC_CONST
;
1529 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
1530 can be represented as integral.
1531 e.g. "b:c=e6,0" for "const b = blob1"
1532 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1534 SYMBOL_CLASS (sym
) = LOC_CONST
;
1535 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1539 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1544 /* If the value is too big to fit in an int (perhaps because
1545 it is unsigned), or something like that, we silently get
1546 a bogus value. The type and everything else about it is
1547 correct. Ideally, we should be using whatever we have
1548 available for parsing unsigned and long long values,
1550 SYMBOL_VALUE (sym
) = atoi (p
);
1555 SYMBOL_CLASS (sym
) = LOC_CONST
;
1556 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1559 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1560 add_symbol_to_list (sym
, &file_symbols
);
1564 /* The name of a caught exception. */
1565 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1566 SYMBOL_CLASS (sym
) = LOC_LABEL
;
1567 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1568 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1569 add_symbol_to_list (sym
, &local_symbols
);
1573 /* A static function definition. */
1574 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1575 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
1576 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1577 add_symbol_to_list (sym
, &file_symbols
);
1578 /* fall into process_function_types. */
1580 process_function_types
:
1581 /* Function result types are described as the result type in stabs.
1582 We need to convert this to the function-returning-type-X type
1583 in GDB. E.g. "int" is converted to "function returning int". */
1584 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
1585 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
1587 /* All functions in C++ have prototypes. */
1588 if (SYMBOL_LANGUAGE (sym
) == language_cplus
)
1589 TYPE_FLAGS (SYMBOL_TYPE (sym
)) |= TYPE_FLAG_PROTOTYPED
;
1591 /* fall into process_prototype_types */
1593 process_prototype_types
:
1594 /* Sun acc puts declared types of arguments here. */
1597 struct type
*ftype
= SYMBOL_TYPE (sym
);
1602 /* Obtain a worst case guess for the number of arguments
1603 by counting the semicolons. */
1610 /* Allocate parameter information fields and fill them in. */
1611 TYPE_FIELDS (ftype
) = (struct field
*)
1612 TYPE_ALLOC (ftype
, nsemi
* sizeof (struct field
));
1617 /* A type number of zero indicates the start of varargs.
1618 FIXME: GDB currently ignores vararg functions. */
1619 if (p
[0] == '0' && p
[1] == '\0')
1621 ptype
= read_type (&p
, objfile
);
1623 /* The Sun compilers mark integer arguments, which should
1624 be promoted to the width of the calling conventions, with
1625 a type which references itself. This type is turned into
1626 a TYPE_CODE_VOID type by read_type, and we have to turn
1627 it back into builtin_type_int here.
1628 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
1629 if (TYPE_CODE (ptype
) == TYPE_CODE_VOID
)
1630 ptype
= builtin_type_int
;
1631 TYPE_FIELD_TYPE (ftype
, nparams
) = ptype
;
1632 TYPE_FIELD_ARTIFICIAL (ftype
, nparams
++) = 0;
1634 TYPE_NFIELDS (ftype
) = nparams
;
1635 TYPE_FLAGS (ftype
) |= TYPE_FLAG_PROTOTYPED
;
1640 /* A global function definition. */
1641 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1642 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
1643 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1644 add_symbol_to_list (sym
, &global_symbols
);
1645 goto process_function_types
;
1648 /* For a class G (global) symbol, it appears that the
1649 value is not correct. It is necessary to search for the
1650 corresponding linker definition to find the value.
1651 These definitions appear at the end of the namelist. */
1652 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1653 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1654 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1655 /* Don't add symbol references to global_sym_chain.
1656 Symbol references don't have valid names and wont't match up with
1657 minimal symbols when the global_sym_chain is relocated.
1658 We'll fixup symbol references when we fixup the defining symbol. */
1659 if (SYMBOL_NAME (sym
) && SYMBOL_NAME (sym
)[0] != '#')
1661 i
= hashname (SYMBOL_NAME (sym
));
1662 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
1663 global_sym_chain
[i
] = sym
;
1665 add_symbol_to_list (sym
, &global_symbols
);
1668 /* This case is faked by a conditional above,
1669 when there is no code letter in the dbx data.
1670 Dbx data never actually contains 'l'. */
1673 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1674 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1675 SYMBOL_VALUE (sym
) = valu
;
1676 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1677 add_symbol_to_list (sym
, &local_symbols
);
1682 /* pF is a two-letter code that means a function parameter in Fortran.
1683 The type-number specifies the type of the return value.
1684 Translate it into a pointer-to-function type. */
1688 = lookup_pointer_type
1689 (lookup_function_type (read_type (&p
, objfile
)));
1692 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1694 /* Normally this is a parameter, a LOC_ARG. On the i960, it
1695 can also be a LOC_LOCAL_ARG depending on symbol type. */
1696 #ifndef DBX_PARM_SYMBOL_CLASS
1697 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
1700 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
1701 SYMBOL_VALUE (sym
) = valu
;
1702 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1703 add_symbol_to_list (sym
, &local_symbols
);
1705 if (TARGET_BYTE_ORDER
!= BFD_ENDIAN_BIG
)
1707 /* On little-endian machines, this crud is never necessary,
1708 and, if the extra bytes contain garbage, is harmful. */
1712 /* If it's gcc-compiled, if it says `short', believe it. */
1713 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
1716 if (!BELIEVE_PCC_PROMOTION
)
1718 /* This is the signed type which arguments get promoted to. */
1719 static struct type
*pcc_promotion_type
;
1720 /* This is the unsigned type which arguments get promoted to. */
1721 static struct type
*pcc_unsigned_promotion_type
;
1723 /* Call it "int" because this is mainly C lossage. */
1724 if (pcc_promotion_type
== NULL
)
1725 pcc_promotion_type
=
1726 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1729 if (pcc_unsigned_promotion_type
== NULL
)
1730 pcc_unsigned_promotion_type
=
1731 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
1732 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
1734 if (BELIEVE_PCC_PROMOTION_TYPE
)
1736 /* This is defined on machines (e.g. sparc) where we
1737 should believe the type of a PCC 'short' argument,
1738 but shouldn't believe the address (the address is the
1739 address of the corresponding int).
1741 My guess is that this correction, as opposed to
1742 changing the parameter to an 'int' (as done below,
1743 for PCC on most machines), is the right thing to do
1744 on all machines, but I don't want to risk breaking
1745 something that already works. On most PCC machines,
1746 the sparc problem doesn't come up because the calling
1747 function has to zero the top bytes (not knowing
1748 whether the called function wants an int or a short),
1749 so there is little practical difference between an
1750 int and a short (except perhaps what happens when the
1751 GDB user types "print short_arg = 0x10000;").
1753 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1754 compiler actually produces the correct address (we
1755 don't need to fix it up). I made this code adapt so
1756 that it will offset the symbol if it was pointing at
1757 an int-aligned location and not otherwise. This way
1758 you can use the same gdb for 4.0.x and 4.1 systems.
1760 If the parameter is shorter than an int, and is
1761 integral (e.g. char, short, or unsigned equivalent),
1762 and is claimed to be passed on an integer boundary,
1763 don't believe it! Offset the parameter's address to
1764 the tail-end of that integer. */
1766 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1767 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
1768 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
1770 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
1771 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
1777 /* If PCC says a parameter is a short or a char,
1778 it is really an int. */
1779 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1780 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
1783 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
1784 ? pcc_unsigned_promotion_type
1785 : pcc_promotion_type
;
1792 /* acc seems to use P to declare the prototypes of functions that
1793 are referenced by this file. gdb is not prepared to deal
1794 with this extra information. FIXME, it ought to. */
1797 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1798 goto process_prototype_types
;
1803 /* Parameter which is in a register. */
1804 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1805 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
1806 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1807 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1809 complain (®_value_complaint
, SYMBOL_VALUE (sym
),
1810 NUM_REGS
+ NUM_PSEUDO_REGS
,
1811 SYMBOL_SOURCE_NAME (sym
));
1812 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1814 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1815 add_symbol_to_list (sym
, &local_symbols
);
1819 /* Register variable (either global or local). */
1820 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1821 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
1822 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1823 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1825 complain (®_value_complaint
, SYMBOL_VALUE (sym
),
1826 NUM_REGS
+ NUM_PSEUDO_REGS
,
1827 SYMBOL_SOURCE_NAME (sym
));
1828 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1830 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1831 if (within_function
)
1833 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
1834 name to represent an argument passed in a register.
1835 GCC uses 'P' for the same case. So if we find such a symbol pair
1836 we combine it into one 'P' symbol. For Sun cc we need to do this
1837 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
1838 the 'p' symbol even if it never saves the argument onto the stack.
1840 On most machines, we want to preserve both symbols, so that
1841 we can still get information about what is going on with the
1842 stack (VAX for computing args_printed, using stack slots instead
1843 of saved registers in backtraces, etc.).
1845 Note that this code illegally combines
1846 main(argc) struct foo argc; { register struct foo argc; }
1847 but this case is considered pathological and causes a warning
1848 from a decent compiler. */
1851 && local_symbols
->nsyms
> 0
1852 #ifndef USE_REGISTER_NOT_ARG
1853 && REG_STRUCT_HAS_ADDR_P ()
1854 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1856 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1857 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
1858 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_SET
1859 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_BITSTRING
)
1863 struct symbol
*prev_sym
;
1864 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1865 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1866 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1867 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME (sym
)))
1869 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1870 /* Use the type from the LOC_REGISTER; that is the type
1871 that is actually in that register. */
1872 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1873 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1878 add_symbol_to_list (sym
, &local_symbols
);
1881 add_symbol_to_list (sym
, &file_symbols
);
1885 /* Static symbol at top level of file */
1886 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1887 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1888 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1889 #ifdef STATIC_TRANSFORM_NAME
1890 if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
)))
1892 struct minimal_symbol
*msym
;
1893 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1896 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1897 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1901 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1902 add_symbol_to_list (sym
, &file_symbols
);
1906 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1908 /* For a nameless type, we don't want a create a symbol, thus we
1909 did not use `sym'. Return without further processing. */
1913 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1914 SYMBOL_VALUE (sym
) = valu
;
1915 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1916 /* C++ vagaries: we may have a type which is derived from
1917 a base type which did not have its name defined when the
1918 derived class was output. We fill in the derived class's
1919 base part member's name here in that case. */
1920 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1921 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1922 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1923 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1926 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1927 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1928 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1929 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1932 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1934 /* gcc-2.6 or later (when using -fvtable-thunks)
1935 emits a unique named type for a vtable entry.
1936 Some gdb code depends on that specific name. */
1937 extern const char vtbl_ptr_name
[];
1939 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1940 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1941 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1943 /* If we are giving a name to a type such as "pointer to
1944 foo" or "function returning foo", we better not set
1945 the TYPE_NAME. If the program contains "typedef char
1946 *caddr_t;", we don't want all variables of type char
1947 * to print as caddr_t. This is not just a
1948 consequence of GDB's type management; PCC and GCC (at
1949 least through version 2.4) both output variables of
1950 either type char * or caddr_t with the type number
1951 defined in the 't' symbol for caddr_t. If a future
1952 compiler cleans this up it GDB is not ready for it
1953 yet, but if it becomes ready we somehow need to
1954 disable this check (without breaking the PCC/GCC2.4
1959 Fortunately, this check seems not to be necessary
1960 for anything except pointers or functions. */
1961 /* ezannoni: 2000-10-26. This seems to apply for
1962 versions of gcc older than 2.8. This was the original
1963 problem: with the following code gdb would tell that
1964 the type for name1 is caddr_t, and func is char()
1965 typedef char *caddr_t;
1977 /* Pascal accepts names for pointer types. */
1978 if (current_subfile
->language
== language_pascal
)
1980 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1984 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1987 add_symbol_to_list (sym
, &file_symbols
);
1991 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1992 by 't' which means we are typedef'ing it as well. */
1993 synonym
= *p
== 't';
1997 /* The semantics of C++ state that "struct foo { ... }" also defines
1998 a typedef for "foo". Unfortunately, cfront never makes the typedef
1999 when translating C++ into C. We make the typedef here so that
2000 "ptype foo" works as expected for cfront translated code. */
2001 else if (current_subfile
->language
== language_cplus
)
2004 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
2006 /* For a nameless type, we don't want a create a symbol, thus we
2007 did not use `sym'. Return without further processing. */
2011 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
2012 SYMBOL_VALUE (sym
) = valu
;
2013 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
2014 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
2015 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
2016 = obconcat (&objfile
->type_obstack
, "", "", SYMBOL_NAME (sym
));
2017 add_symbol_to_list (sym
, &file_symbols
);
2021 /* Clone the sym and then modify it. */
2022 register struct symbol
*typedef_sym
= (struct symbol
*)
2023 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
2024 *typedef_sym
= *sym
;
2025 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
2026 SYMBOL_VALUE (typedef_sym
) = valu
;
2027 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
2028 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
2029 TYPE_NAME (SYMBOL_TYPE (sym
))
2030 = obconcat (&objfile
->type_obstack
, "", "", SYMBOL_NAME (sym
));
2031 add_symbol_to_list (typedef_sym
, &file_symbols
);
2036 /* Static symbol of local scope */
2037 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
2038 SYMBOL_CLASS (sym
) = LOC_STATIC
;
2039 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
2040 #ifdef STATIC_TRANSFORM_NAME
2041 if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
)))
2043 struct minimal_symbol
*msym
;
2044 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
2047 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
2048 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
2052 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2054 add_symbol_to_list (sym
, &global_symbols
);
2056 add_symbol_to_list (sym
, &local_symbols
);
2060 /* Reference parameter */
2061 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
2062 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
2063 SYMBOL_VALUE (sym
) = valu
;
2064 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2065 add_symbol_to_list (sym
, &local_symbols
);
2069 /* Reference parameter which is in a register. */
2070 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
2071 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
2072 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
2073 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
2075 complain (®_value_complaint
, SYMBOL_VALUE (sym
),
2076 NUM_REGS
+ NUM_PSEUDO_REGS
,
2077 SYMBOL_SOURCE_NAME (sym
));
2078 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
2080 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2081 add_symbol_to_list (sym
, &local_symbols
);
2085 /* This is used by Sun FORTRAN for "function result value".
2086 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
2087 that Pascal uses it too, but when I tried it Pascal used
2088 "x:3" (local symbol) instead. */
2089 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
2090 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
2091 SYMBOL_VALUE (sym
) = valu
;
2092 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2093 add_symbol_to_list (sym
, &local_symbols
);
2096 /* New code added to support cfront stabs strings.
2097 Note: case 'P' already handled above */
2099 /* Cfront type continuation coming up!
2100 Find the original definition and add to it.
2101 We'll have to do this for the typedef too,
2102 since we cloned the symbol to define a type in read_type.
2103 Stabs info examples:
2105 foo__1CFv :ZtF (first def foo__1CFv:F(0,3);(0,24))
2106 C:ZsC;;__ct__1CFv func1__1CFv func2__1CFv ... ;;;
2107 where C is the name of the class.
2108 Unfortunately, we can't lookup the original symbol yet 'cuz
2109 we haven't finished reading all the symbols.
2110 Instead, we save it for processing later */
2111 process_later (sym
, p
, resolve_cfront_continuation
);
2112 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
); /* FIXME! change later */
2113 SYMBOL_CLASS (sym
) = LOC_CONST
;
2114 SYMBOL_VALUE (sym
) = 0;
2115 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2116 /* Don't add to list - we'll delete it later when
2117 we add the continuation to the real sym */
2119 /* End of new code added to support cfront stabs strings */
2122 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
2123 SYMBOL_CLASS (sym
) = LOC_CONST
;
2124 SYMBOL_VALUE (sym
) = 0;
2125 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2126 add_symbol_to_list (sym
, &file_symbols
);
2130 /* When passing structures to a function, some systems sometimes pass
2131 the address in a register, not the structure itself. */
2133 if (REG_STRUCT_HAS_ADDR_P ()
2134 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
, SYMBOL_TYPE (sym
))
2135 && (SYMBOL_CLASS (sym
) == LOC_REGPARM
|| SYMBOL_CLASS (sym
) == LOC_ARG
))
2137 struct type
*symbol_type
= check_typedef (SYMBOL_TYPE (sym
));
2139 if ((TYPE_CODE (symbol_type
) == TYPE_CODE_STRUCT
)
2140 || (TYPE_CODE (symbol_type
) == TYPE_CODE_UNION
)
2141 || (TYPE_CODE (symbol_type
) == TYPE_CODE_BITSTRING
)
2142 || (TYPE_CODE (symbol_type
) == TYPE_CODE_SET
))
2144 /* If REG_STRUCT_HAS_ADDR yields non-zero we have to convert
2145 LOC_REGPARM to LOC_REGPARM_ADDR for structures and unions. */
2146 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
)
2147 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
2148 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
2149 and subsequent arguments on the sparc, for example). */
2150 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
2151 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
2155 /* Is there more to parse? For example LRS/alias information? */
2156 while (*p
&& *p
== ';')
2159 if (*p
&& p
[0] == 'l' && p
[1] == '(')
2161 /* GNU extensions for live range splitting may be appended to
2162 the end of the stab string. eg. "l(#1,#2);l(#3,#5)" */
2164 /* Resolve the live range and add it to SYM's live range list. */
2165 if (!resolve_live_range (objfile
, sym
, p
))
2168 /* Find end of live range info. */
2169 p
= strchr (p
, ')');
2170 if (!*p
|| *p
!= ')')
2172 complain (&lrs_general_complaint
, "live range format not recognized");
2181 /* Add the live range found in P to the symbol SYM in objfile OBJFILE. Returns
2182 non-zero on success, zero otherwise. */
2185 resolve_live_range (struct objfile
*objfile
, struct symbol
*sym
, char *p
)
2188 CORE_ADDR start
, end
;
2190 /* Sanity check the beginning of the stabs string. */
2191 if (!*p
|| *p
!= 'l')
2193 complain (&lrs_general_complaint
, "live range string 1");
2198 if (!*p
|| *p
!= '(')
2200 complain (&lrs_general_complaint
, "live range string 2");
2205 /* Get starting value of range and advance P past the reference id.
2207 ?!? In theory, the process_reference should never fail, but we should
2208 catch that case just in case the compiler scrogged the stabs. */
2209 refnum
= process_reference (&p
);
2210 start
= ref_search_value (refnum
);
2213 complain (&lrs_general_complaint
, "Live range symbol not found 1");
2217 if (!*p
|| *p
!= ',')
2219 complain (&lrs_general_complaint
, "live range string 3");
2224 /* Get ending value of range and advance P past the reference id.
2226 ?!? In theory, the process_reference should never fail, but we should
2227 catch that case just in case the compiler scrogged the stabs. */
2228 refnum
= process_reference (&p
);
2229 end
= ref_search_value (refnum
);
2232 complain (&lrs_general_complaint
, "Live range symbol not found 2");
2236 if (!*p
|| *p
!= ')')
2238 complain (&lrs_general_complaint
, "live range string 4");
2242 /* Now that we know the bounds of the range, add it to the
2244 add_live_range (objfile
, sym
, start
, end
);
2249 /* Add a new live range defined by START and END to the symbol SYM
2250 in objfile OBJFILE. */
2253 add_live_range (struct objfile
*objfile
, struct symbol
*sym
, CORE_ADDR start
,
2256 struct range_list
*r
, *rs
;
2260 complain (&lrs_general_complaint
, "end of live range follows start");
2264 /* Alloc new live range structure. */
2265 r
= (struct range_list
*)
2266 obstack_alloc (&objfile
->type_obstack
,
2267 sizeof (struct range_list
));
2272 /* Append this range to the symbol's range list. */
2273 if (!SYMBOL_RANGES (sym
))
2274 SYMBOL_RANGES (sym
) = r
;
2277 /* Get the last range for the symbol. */
2278 for (rs
= SYMBOL_RANGES (sym
); rs
->next
; rs
= rs
->next
)
2285 /* Skip rest of this symbol and return an error type.
2287 General notes on error recovery: error_type always skips to the
2288 end of the symbol (modulo cretinous dbx symbol name continuation).
2289 Thus code like this:
2291 if (*(*pp)++ != ';')
2292 return error_type (pp, objfile);
2294 is wrong because if *pp starts out pointing at '\0' (typically as the
2295 result of an earlier error), it will be incremented to point to the
2296 start of the next symbol, which might produce strange results, at least
2297 if you run off the end of the string table. Instead use
2300 return error_type (pp, objfile);
2306 foo = error_type (pp, objfile);
2310 And in case it isn't obvious, the point of all this hair is so the compiler
2311 can define new types and new syntaxes, and old versions of the
2312 debugger will be able to read the new symbol tables. */
2314 static struct type
*
2315 error_type (char **pp
, struct objfile
*objfile
)
2317 complain (&error_type_complaint
);
2320 /* Skip to end of symbol. */
2321 while (**pp
!= '\0')
2326 /* Check for and handle cretinous dbx symbol name continuation! */
2327 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
2329 *pp
= next_symbol_text (objfile
);
2336 return (builtin_type_error
);
2340 /* Read type information or a type definition; return the type. Even
2341 though this routine accepts either type information or a type
2342 definition, the distinction is relevant--some parts of stabsread.c
2343 assume that type information starts with a digit, '-', or '(' in
2344 deciding whether to call read_type. */
2347 read_type (register char **pp
, struct objfile
*objfile
)
2349 register struct type
*type
= 0;
2352 char type_descriptor
;
2354 /* Size in bits of type if specified by a type attribute, or -1 if
2355 there is no size attribute. */
2358 /* Used to distinguish string and bitstring from char-array and set. */
2361 /* Read type number if present. The type number may be omitted.
2362 for instance in a two-dimensional array declared with type
2363 "ar1;1;10;ar1;1;10;4". */
2364 if ((**pp
>= '0' && **pp
<= '9')
2368 if (read_type_number (pp
, typenums
) != 0)
2369 return error_type (pp
, objfile
);
2371 /* Type is not being defined here. Either it already exists,
2372 or this is a forward reference to it. dbx_alloc_type handles
2375 return dbx_alloc_type (typenums
, objfile
);
2377 /* Type is being defined here. */
2379 Also skip the type descriptor - we get it below with (*pp)[-1]. */
2384 /* 'typenums=' not present, type is anonymous. Read and return
2385 the definition, but don't put it in the type vector. */
2386 typenums
[0] = typenums
[1] = -1;
2391 type_descriptor
= (*pp
)[-1];
2392 switch (type_descriptor
)
2396 enum type_code code
;
2398 /* Used to index through file_symbols. */
2399 struct pending
*ppt
;
2402 /* Name including "struct", etc. */
2406 char *from
, *to
, *p
, *q1
, *q2
;
2408 /* Set the type code according to the following letter. */
2412 code
= TYPE_CODE_STRUCT
;
2415 code
= TYPE_CODE_UNION
;
2418 code
= TYPE_CODE_ENUM
;
2422 /* Complain and keep going, so compilers can invent new
2423 cross-reference types. */
2424 static struct complaint msg
=
2425 {"Unrecognized cross-reference type `%c'", 0, 0};
2426 complain (&msg
, (*pp
)[0]);
2427 code
= TYPE_CODE_STRUCT
;
2432 q1
= strchr (*pp
, '<');
2433 p
= strchr (*pp
, ':');
2435 return error_type (pp
, objfile
);
2436 if (q1
&& p
> q1
&& p
[1] == ':')
2438 int nesting_level
= 0;
2439 for (q2
= q1
; *q2
; q2
++)
2443 else if (*q2
== '>')
2445 else if (*q2
== ':' && nesting_level
== 0)
2450 return error_type (pp
, objfile
);
2453 (char *) obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
2455 /* Copy the name. */
2461 /* Set the pointer ahead of the name which we just read, and
2466 /* Now check to see whether the type has already been
2467 declared. This was written for arrays of cross-referenced
2468 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
2469 sure it is not necessary anymore. But it might be a good
2470 idea, to save a little memory. */
2472 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
2473 for (i
= 0; i
< ppt
->nsyms
; i
++)
2475 struct symbol
*sym
= ppt
->symbol
[i
];
2477 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2478 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
2479 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
2480 && STREQ (SYMBOL_NAME (sym
), type_name
))
2482 obstack_free (&objfile
->type_obstack
, type_name
);
2483 type
= SYMBOL_TYPE (sym
);
2488 /* Didn't find the type to which this refers, so we must
2489 be dealing with a forward reference. Allocate a type
2490 structure for it, and keep track of it so we can
2491 fill in the rest of the fields when we get the full
2493 type
= dbx_alloc_type (typenums
, objfile
);
2494 TYPE_CODE (type
) = code
;
2495 TYPE_TAG_NAME (type
) = type_name
;
2496 INIT_CPLUS_SPECIFIC (type
);
2497 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
2499 add_undefined_type (type
);
2503 case '-': /* RS/6000 built-in type */
2517 /* We deal with something like t(1,2)=(3,4)=... which
2518 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
2520 /* Allocate and enter the typedef type first.
2521 This handles recursive types. */
2522 type
= dbx_alloc_type (typenums
, objfile
);
2523 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
2525 struct type
*xtype
= read_type (pp
, objfile
);
2528 /* It's being defined as itself. That means it is "void". */
2529 TYPE_CODE (type
) = TYPE_CODE_VOID
;
2530 TYPE_LENGTH (type
) = 1;
2532 else if (type_size
>= 0 || is_string
)
2534 /* This is the absolute wrong way to construct types. Every
2535 other debug format has found a way around this problem and
2536 the related problems with unnecessarily stubbed types;
2537 someone motivated should attempt to clean up the issue
2538 here as well. Once a type pointed to has been created it
2539 should not be modified. */
2540 replace_type (type
, xtype
);
2541 TYPE_NAME (type
) = NULL
;
2542 TYPE_TAG_NAME (type
) = NULL
;
2546 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2547 TYPE_TARGET_TYPE (type
) = xtype
;
2552 /* In the following types, we must be sure to overwrite any existing
2553 type that the typenums refer to, rather than allocating a new one
2554 and making the typenums point to the new one. This is because there
2555 may already be pointers to the existing type (if it had been
2556 forward-referenced), and we must change it to a pointer, function,
2557 reference, or whatever, *in-place*. */
2560 type1
= read_type (pp
, objfile
);
2561 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
2564 case '&': /* Reference to another type */
2565 type1
= read_type (pp
, objfile
);
2566 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
2569 case 'f': /* Function returning another type */
2570 if (os9k_stabs
&& **pp
== '(')
2572 /* Function prototype; parse it.
2573 We must conditionalize this on os9k_stabs because otherwise
2574 it could be confused with a Sun-style (1,3) typenumber
2580 t
= read_type (pp
, objfile
);
2585 type1
= read_type (pp
, objfile
);
2586 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
2589 case 'k': /* Const qualifier on some type (Sun) */
2590 case 'c': /* Const qualifier on some type (OS9000) */
2591 /* Because 'c' means other things to AIX and 'k' is perfectly good,
2592 only accept 'c' in the os9k_stabs case. */
2593 if (type_descriptor
== 'c' && !os9k_stabs
)
2594 return error_type (pp
, objfile
);
2595 type
= read_type (pp
, objfile
);
2596 type
= make_cv_type (1, TYPE_VOLATILE (type
), type
,
2597 dbx_lookup_type (typenums
));
2600 case 'B': /* Volatile qual on some type (Sun) */
2601 case 'i': /* Volatile qual on some type (OS9000) */
2602 /* Because 'i' means other things to AIX and 'B' is perfectly good,
2603 only accept 'i' in the os9k_stabs case. */
2604 if (type_descriptor
== 'i' && !os9k_stabs
)
2605 return error_type (pp
, objfile
);
2606 type
= read_type (pp
, objfile
);
2607 type
= make_cv_type (TYPE_CONST (type
), 1, type
,
2608 dbx_lookup_type (typenums
));
2612 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
2613 { /* Member (class & variable) type */
2614 /* FIXME -- we should be doing smash_to_XXX types here. */
2616 struct type
*domain
= read_type (pp
, objfile
);
2617 struct type
*memtype
;
2620 /* Invalid member type data format. */
2621 return error_type (pp
, objfile
);
2624 memtype
= read_type (pp
, objfile
);
2625 type
= dbx_alloc_type (typenums
, objfile
);
2626 smash_to_member_type (type
, domain
, memtype
);
2629 /* type attribute */
2632 /* Skip to the semicolon. */
2633 while (**pp
!= ';' && **pp
!= '\0')
2636 return error_type (pp
, objfile
);
2638 ++ * pp
; /* Skip the semicolon. */
2643 type_size
= atoi (attr
+ 1);
2653 /* Ignore unrecognized type attributes, so future compilers
2654 can invent new ones. */
2662 case '#': /* Method (class & fn) type */
2663 if ((*pp
)[0] == '#')
2665 /* We'll get the parameter types from the name. */
2666 struct type
*return_type
;
2669 return_type
= read_type (pp
, objfile
);
2670 if (*(*pp
)++ != ';')
2671 complain (&invalid_member_complaint
, symnum
);
2672 type
= allocate_stub_method (return_type
);
2673 if (typenums
[0] != -1)
2674 *dbx_lookup_type (typenums
) = type
;
2678 struct type
*domain
= read_type (pp
, objfile
);
2679 struct type
*return_type
;
2683 /* Invalid member type data format. */
2684 return error_type (pp
, objfile
);
2688 return_type
= read_type (pp
, objfile
);
2689 args
= read_args (pp
, ';', objfile
);
2690 type
= dbx_alloc_type (typenums
, objfile
);
2691 smash_to_method_type (type
, domain
, return_type
, args
);
2695 case 'r': /* Range type */
2696 type
= read_range_type (pp
, typenums
, objfile
);
2697 if (typenums
[0] != -1)
2698 *dbx_lookup_type (typenums
) = type
;
2703 /* Const and volatile qualified type. */
2704 type
= read_type (pp
, objfile
);
2707 /* Sun ACC builtin int type */
2708 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
2709 if (typenums
[0] != -1)
2710 *dbx_lookup_type (typenums
) = type
;
2714 case 'R': /* Sun ACC builtin float type */
2715 type
= read_sun_floating_type (pp
, typenums
, objfile
);
2716 if (typenums
[0] != -1)
2717 *dbx_lookup_type (typenums
) = type
;
2720 case 'e': /* Enumeration type */
2721 type
= dbx_alloc_type (typenums
, objfile
);
2722 type
= read_enum_type (pp
, type
, objfile
);
2723 if (typenums
[0] != -1)
2724 *dbx_lookup_type (typenums
) = type
;
2727 case 's': /* Struct type */
2728 case 'u': /* Union type */
2729 type
= dbx_alloc_type (typenums
, objfile
);
2730 switch (type_descriptor
)
2733 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
2736 TYPE_CODE (type
) = TYPE_CODE_UNION
;
2739 type
= read_struct_type (pp
, type
, objfile
);
2742 case 'a': /* Array type */
2744 return error_type (pp
, objfile
);
2747 type
= dbx_alloc_type (typenums
, objfile
);
2748 type
= read_array_type (pp
, type
, objfile
);
2750 TYPE_CODE (type
) = TYPE_CODE_STRING
;
2754 type1
= read_type (pp
, objfile
);
2755 type
= create_set_type ((struct type
*) NULL
, type1
);
2757 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
2758 if (typenums
[0] != -1)
2759 *dbx_lookup_type (typenums
) = type
;
2763 --*pp
; /* Go back to the symbol in error */
2764 /* Particularly important if it was \0! */
2765 return error_type (pp
, objfile
);
2770 warning ("GDB internal error, type is NULL in stabsread.c\n");
2771 return error_type (pp
, objfile
);
2774 /* Size specified in a type attribute overrides any other size. */
2775 if (type_size
!= -1)
2776 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2781 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
2782 Return the proper type node for a given builtin type number. */
2784 static struct type
*
2785 rs6000_builtin_type (int typenum
)
2787 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
2788 #define NUMBER_RECOGNIZED 34
2789 /* This includes an empty slot for type number -0. */
2790 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
2791 struct type
*rettype
= NULL
;
2793 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
2795 complain (&rs6000_builtin_complaint
, typenum
);
2796 return builtin_type_error
;
2798 if (negative_types
[-typenum
] != NULL
)
2799 return negative_types
[-typenum
];
2801 #if TARGET_CHAR_BIT != 8
2802 #error This code wrong for TARGET_CHAR_BIT not 8
2803 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
2804 that if that ever becomes not true, the correct fix will be to
2805 make the size in the struct type to be in bits, not in units of
2812 /* The size of this and all the other types are fixed, defined
2813 by the debugging format. If there is a type called "int" which
2814 is other than 32 bits, then it should use a new negative type
2815 number (or avoid negative type numbers for that case).
2816 See stabs.texinfo. */
2817 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
2820 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
2823 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
2826 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
2829 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
2830 "unsigned char", NULL
);
2833 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
2836 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
2837 "unsigned short", NULL
);
2840 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2841 "unsigned int", NULL
);
2844 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2847 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2848 "unsigned long", NULL
);
2851 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
2854 /* IEEE single precision (32 bit). */
2855 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
2858 /* IEEE double precision (64 bit). */
2859 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
2862 /* This is an IEEE double on the RS/6000, and different machines with
2863 different sizes for "long double" should use different negative
2864 type numbers. See stabs.texinfo. */
2865 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
2868 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
2871 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2875 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
2878 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
2881 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
2884 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
2888 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
2892 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
2896 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2900 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2904 /* Complex type consisting of two IEEE single precision values. */
2905 rettype
= init_type (TYPE_CODE_COMPLEX
, 8, 0, "complex", NULL
);
2908 /* Complex type consisting of two IEEE double precision values. */
2909 rettype
= init_type (TYPE_CODE_COMPLEX
, 16, 0, "double complex", NULL
);
2912 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
2915 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
2918 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
2921 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
2924 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
2927 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2928 "unsigned long long", NULL
);
2931 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2935 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
2938 negative_types
[-typenum
] = rettype
;
2942 /* This page contains subroutines of read_type. */
2944 /* Read member function stabs info for C++ classes. The form of each member
2947 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2949 An example with two member functions is:
2951 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2953 For the case of overloaded operators, the format is op$::*.funcs, where
2954 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2955 name (such as `+=') and `.' marks the end of the operator name.
2957 Returns 1 for success, 0 for failure. */
2960 read_member_functions (struct field_info
*fip
, char **pp
, struct type
*type
,
2961 struct objfile
*objfile
)
2966 /* Total number of member functions defined in this class. If the class
2967 defines two `f' functions, and one `g' function, then this will have
2969 int total_length
= 0;
2973 struct next_fnfield
*next
;
2974 struct fn_field fn_field
;
2977 struct type
*look_ahead_type
;
2978 struct next_fnfieldlist
*new_fnlist
;
2979 struct next_fnfield
*new_sublist
;
2983 /* Process each list until we find something that is not a member function
2984 or find the end of the functions. */
2988 /* We should be positioned at the start of the function name.
2989 Scan forward to find the first ':' and if it is not the
2990 first of a "::" delimiter, then this is not a member function. */
3002 look_ahead_type
= NULL
;
3006 if (p
- *pp
== strlen ("__base_ctor")
3007 && strncmp (*pp
, "__base_ctor", strlen ("__base_ctor")) == 0)
3009 else if (p
- *pp
== strlen ("__base_dtor")
3010 && strncmp (*pp
, "__base_dtor", strlen ("__base_dtor")) == 0)
3012 else if (p
- *pp
== strlen ("__deleting_dtor")
3013 && strncmp (*pp
, "__deleting_dtor",
3014 strlen ("__deleting_dtor")) == 0)
3019 /* Skip past '::'. */
3021 /* Read the type. */
3022 read_type (pp
, objfile
);
3023 /* Skip past the colon, mangled name, semicolon, flags, and final
3035 new_fnlist
= (struct next_fnfieldlist
*)
3036 xmalloc (sizeof (struct next_fnfieldlist
));
3037 make_cleanup (xfree
, new_fnlist
);
3038 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
3040 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
3042 /* This is a completely wierd case. In order to stuff in the
3043 names that might contain colons (the usual name delimiter),
3044 Mike Tiemann defined a different name format which is
3045 signalled if the identifier is "op$". In that case, the
3046 format is "op$::XXXX." where XXXX is the name. This is
3047 used for names like "+" or "=". YUUUUUUUK! FIXME! */
3048 /* This lets the user type "break operator+".
3049 We could just put in "+" as the name, but that wouldn't
3051 static char opname
[32] =
3052 {'o', 'p', CPLUS_MARKER
};
3053 char *o
= opname
+ 3;
3055 /* Skip past '::'. */
3058 STABS_CONTINUE (pp
, objfile
);
3064 main_fn_name
= savestring (opname
, o
- opname
);
3070 main_fn_name
= savestring (*pp
, p
- *pp
);
3071 /* Skip past '::'. */
3074 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
3079 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
3080 make_cleanup (xfree
, new_sublist
);
3081 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
3083 /* Check for and handle cretinous dbx symbol name continuation! */
3084 if (look_ahead_type
== NULL
)
3087 STABS_CONTINUE (pp
, objfile
);
3089 new_sublist
->fn_field
.type
= read_type (pp
, objfile
);
3092 /* Invalid symtab info for member function. */
3098 /* g++ version 1 kludge */
3099 new_sublist
->fn_field
.type
= look_ahead_type
;
3100 look_ahead_type
= NULL
;
3110 /* If this is just a stub, then we don't have the real name here. */
3112 if (TYPE_STUB (new_sublist
->fn_field
.type
))
3114 if (!TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
))
3115 TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
) = type
;
3116 new_sublist
->fn_field
.is_stub
= 1;
3118 new_sublist
->fn_field
.physname
= savestring (*pp
, p
- *pp
);
3121 /* Set this member function's visibility fields. */
3124 case VISIBILITY_PRIVATE
:
3125 new_sublist
->fn_field
.is_private
= 1;
3127 case VISIBILITY_PROTECTED
:
3128 new_sublist
->fn_field
.is_protected
= 1;
3132 STABS_CONTINUE (pp
, objfile
);
3135 case 'A': /* Normal functions. */
3136 new_sublist
->fn_field
.is_const
= 0;
3137 new_sublist
->fn_field
.is_volatile
= 0;
3140 case 'B': /* `const' member functions. */
3141 new_sublist
->fn_field
.is_const
= 1;
3142 new_sublist
->fn_field
.is_volatile
= 0;
3145 case 'C': /* `volatile' member function. */
3146 new_sublist
->fn_field
.is_const
= 0;
3147 new_sublist
->fn_field
.is_volatile
= 1;
3150 case 'D': /* `const volatile' member function. */
3151 new_sublist
->fn_field
.is_const
= 1;
3152 new_sublist
->fn_field
.is_volatile
= 1;
3155 case '*': /* File compiled with g++ version 1 -- no info */
3160 complain (&const_vol_complaint
, **pp
);
3169 /* virtual member function, followed by index.
3170 The sign bit is set to distinguish pointers-to-methods
3171 from virtual function indicies. Since the array is
3172 in words, the quantity must be shifted left by 1
3173 on 16 bit machine, and by 2 on 32 bit machine, forcing
3174 the sign bit out, and usable as a valid index into
3175 the array. Remove the sign bit here. */
3176 new_sublist
->fn_field
.voffset
=
3177 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
3181 STABS_CONTINUE (pp
, objfile
);
3182 if (**pp
== ';' || **pp
== '\0')
3184 /* Must be g++ version 1. */
3185 new_sublist
->fn_field
.fcontext
= 0;
3189 /* Figure out from whence this virtual function came.
3190 It may belong to virtual function table of
3191 one of its baseclasses. */
3192 look_ahead_type
= read_type (pp
, objfile
);
3195 /* g++ version 1 overloaded methods. */
3199 new_sublist
->fn_field
.fcontext
= look_ahead_type
;
3208 look_ahead_type
= NULL
;
3214 /* static member function. */
3215 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
3216 if (strncmp (new_sublist
->fn_field
.physname
,
3217 main_fn_name
, strlen (main_fn_name
)))
3219 new_sublist
->fn_field
.is_stub
= 1;
3225 complain (&member_fn_complaint
, (*pp
)[-1]);
3226 /* Fall through into normal member function. */
3229 /* normal member function. */
3230 new_sublist
->fn_field
.voffset
= 0;
3231 new_sublist
->fn_field
.fcontext
= 0;
3235 new_sublist
->next
= sublist
;
3236 sublist
= new_sublist
;
3238 STABS_CONTINUE (pp
, objfile
);
3240 while (**pp
!= ';' && **pp
!= '\0');
3244 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
3245 obstack_alloc (&objfile
->type_obstack
,
3246 sizeof (struct fn_field
) * length
);
3247 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
3248 sizeof (struct fn_field
) * length
);
3249 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
3251 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
3254 new_fnlist
->fn_fieldlist
.length
= length
;
3255 new_fnlist
->next
= fip
->fnlist
;
3256 fip
->fnlist
= new_fnlist
;
3258 total_length
+= length
;
3259 STABS_CONTINUE (pp
, objfile
);
3264 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3265 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
3266 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
3267 memset (TYPE_FN_FIELDLISTS (type
), 0,
3268 sizeof (struct fn_fieldlist
) * nfn_fields
);
3269 TYPE_NFN_FIELDS (type
) = nfn_fields
;
3270 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
3276 /* Special GNU C++ name.
3278 Returns 1 for success, 0 for failure. "failure" means that we can't
3279 keep parsing and it's time for error_type(). */
3282 read_cpp_abbrev (struct field_info
*fip
, char **pp
, struct type
*type
,
3283 struct objfile
*objfile
)
3288 struct type
*context
;
3298 /* At this point, *pp points to something like "22:23=*22...",
3299 where the type number before the ':' is the "context" and
3300 everything after is a regular type definition. Lookup the
3301 type, find it's name, and construct the field name. */
3303 context
= read_type (pp
, objfile
);
3307 case 'f': /* $vf -- a virtual function table pointer */
3308 name
= type_name_no_tag (context
);
3313 fip
->list
->field
.name
=
3314 obconcat (&objfile
->type_obstack
, vptr_name
, name
, "");
3317 case 'b': /* $vb -- a virtual bsomethingorother */
3318 name
= type_name_no_tag (context
);
3321 complain (&invalid_cpp_type_complaint
, symnum
);
3324 fip
->list
->field
.name
=
3325 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
3329 complain (&invalid_cpp_abbrev_complaint
, *pp
);
3330 fip
->list
->field
.name
=
3331 obconcat (&objfile
->type_obstack
,
3332 "INVALID_CPLUSPLUS_ABBREV", "", "");
3336 /* At this point, *pp points to the ':'. Skip it and read the
3342 complain (&invalid_cpp_abbrev_complaint
, *pp
);
3345 fip
->list
->field
.type
= read_type (pp
, objfile
);
3347 (*pp
)++; /* Skip the comma. */
3353 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
3357 /* This field is unpacked. */
3358 FIELD_BITSIZE (fip
->list
->field
) = 0;
3359 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
3363 complain (&invalid_cpp_abbrev_complaint
, *pp
);
3364 /* We have no idea what syntax an unrecognized abbrev would have, so
3365 better return 0. If we returned 1, we would need to at least advance
3366 *pp to avoid an infinite loop. */
3373 read_one_struct_field (struct field_info
*fip
, char **pp
, char *p
,
3374 struct type
*type
, struct objfile
*objfile
)
3376 /* The following is code to work around cfront generated stabs.
3377 The stabs contains full mangled name for each field.
3378 We try to demangle the name and extract the field name out of it.
3380 if (ARM_DEMANGLING
&& current_subfile
->language
== language_cplus
)
3386 dem
= cplus_demangle (*pp
, DMGL_ANSI
| DMGL_PARAMS
);
3389 dem_p
= strrchr (dem
, ':');
3390 if (dem_p
!= 0 && *(dem_p
- 1) == ':')
3392 FIELD_NAME (fip
->list
->field
) =
3393 obsavestring (dem_p
, strlen (dem_p
), &objfile
->type_obstack
);
3397 FIELD_NAME (fip
->list
->field
) =
3398 obsavestring (*pp
, p
- *pp
, &objfile
->type_obstack
);
3402 /* end of code for cfront work around */
3405 fip
->list
->field
.name
=
3406 obsavestring (*pp
, p
- *pp
, &objfile
->type_obstack
);
3409 /* This means we have a visibility for a field coming. */
3413 fip
->list
->visibility
= *(*pp
)++;
3417 /* normal dbx-style format, no explicit visibility */
3418 fip
->list
->visibility
= VISIBILITY_PUBLIC
;
3421 fip
->list
->field
.type
= read_type (pp
, objfile
);
3426 /* Possible future hook for nested types. */
3429 fip
->list
->field
.bitpos
= (long) -2; /* nested type */
3439 /* Static class member. */
3440 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (*pp
, p
- *pp
));
3444 else if (**pp
!= ',')
3446 /* Bad structure-type format. */
3447 complain (&stabs_general_complaint
, "bad structure-type format");
3451 (*pp
)++; /* Skip the comma. */
3455 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ',', &nbits
);
3458 complain (&stabs_general_complaint
, "bad structure-type format");
3461 FIELD_BITSIZE (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
3464 complain (&stabs_general_complaint
, "bad structure-type format");
3469 if (FIELD_BITPOS (fip
->list
->field
) == 0
3470 && FIELD_BITSIZE (fip
->list
->field
) == 0)
3472 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
3473 it is a field which has been optimized out. The correct stab for
3474 this case is to use VISIBILITY_IGNORE, but that is a recent
3475 invention. (2) It is a 0-size array. For example
3476 union { int num; char str[0]; } foo. Printing "<no value>" for
3477 str in "p foo" is OK, since foo.str (and thus foo.str[3])
3478 will continue to work, and a 0-size array as a whole doesn't
3479 have any contents to print.
3481 I suspect this probably could also happen with gcc -gstabs (not
3482 -gstabs+) for static fields, and perhaps other C++ extensions.
3483 Hopefully few people use -gstabs with gdb, since it is intended
3484 for dbx compatibility. */
3486 /* Ignore this field. */
3487 fip
->list
->visibility
= VISIBILITY_IGNORE
;
3491 /* Detect an unpacked field and mark it as such.
3492 dbx gives a bit size for all fields.
3493 Note that forward refs cannot be packed,
3494 and treat enums as if they had the width of ints. */
3496 struct type
*field_type
= check_typedef (FIELD_TYPE (fip
->list
->field
));
3498 if (TYPE_CODE (field_type
) != TYPE_CODE_INT
3499 && TYPE_CODE (field_type
) != TYPE_CODE_RANGE
3500 && TYPE_CODE (field_type
) != TYPE_CODE_BOOL
3501 && TYPE_CODE (field_type
) != TYPE_CODE_ENUM
)
3503 FIELD_BITSIZE (fip
->list
->field
) = 0;
3505 if ((FIELD_BITSIZE (fip
->list
->field
)
3506 == TARGET_CHAR_BIT
* TYPE_LENGTH (field_type
)
3507 || (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
3508 && FIELD_BITSIZE (fip
->list
->field
) == TARGET_INT_BIT
)
3511 FIELD_BITPOS (fip
->list
->field
) % 8 == 0)
3513 FIELD_BITSIZE (fip
->list
->field
) = 0;
3519 /* Read struct or class data fields. They have the form:
3521 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
3523 At the end, we see a semicolon instead of a field.
3525 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
3528 The optional VISIBILITY is one of:
3530 '/0' (VISIBILITY_PRIVATE)
3531 '/1' (VISIBILITY_PROTECTED)
3532 '/2' (VISIBILITY_PUBLIC)
3533 '/9' (VISIBILITY_IGNORE)
3535 or nothing, for C style fields with public visibility.
3537 Returns 1 for success, 0 for failure. */
3540 read_struct_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3541 struct objfile
*objfile
)
3544 struct nextfield
*new;
3546 /* We better set p right now, in case there are no fields at all... */
3550 /* Read each data member type until we find the terminating ';' at the end of
3551 the data member list, or break for some other reason such as finding the
3552 start of the member function list. */
3553 /* Stab string for structure/union does not end with two ';' in
3554 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
3556 while (**pp
!= ';' && **pp
!= '\0')
3558 if (os9k_stabs
&& **pp
== ',')
3560 STABS_CONTINUE (pp
, objfile
);
3561 /* Get space to record the next field's data. */
3562 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3563 make_cleanup (xfree
, new);
3564 memset (new, 0, sizeof (struct nextfield
));
3565 new->next
= fip
->list
;
3568 /* Get the field name. */
3571 /* If is starts with CPLUS_MARKER it is a special abbreviation,
3572 unless the CPLUS_MARKER is followed by an underscore, in
3573 which case it is just the name of an anonymous type, which we
3574 should handle like any other type name. */
3576 if (is_cplus_marker (p
[0]) && p
[1] != '_')
3578 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
3583 /* Look for the ':' that separates the field name from the field
3584 values. Data members are delimited by a single ':', while member
3585 functions are delimited by a pair of ':'s. When we hit the member
3586 functions (if any), terminate scan loop and return. */
3588 while (*p
!= ':' && *p
!= '\0')
3595 /* Check to see if we have hit the member functions yet. */
3600 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
3602 if (p
[0] == ':' && p
[1] == ':')
3604 /* chill the list of fields: the last entry (at the head) is a
3605 partially constructed entry which we now scrub. */
3606 fip
->list
= fip
->list
->next
;
3611 /* The stabs for C++ derived classes contain baseclass information which
3612 is marked by a '!' character after the total size. This function is
3613 called when we encounter the baseclass marker, and slurps up all the
3614 baseclass information.
3616 Immediately following the '!' marker is the number of base classes that
3617 the class is derived from, followed by information for each base class.
3618 For each base class, there are two visibility specifiers, a bit offset
3619 to the base class information within the derived class, a reference to
3620 the type for the base class, and a terminating semicolon.
3622 A typical example, with two base classes, would be "!2,020,19;0264,21;".
3624 Baseclass information marker __________________|| | | | | | |
3625 Number of baseclasses __________________________| | | | | | |
3626 Visibility specifiers (2) ________________________| | | | | |
3627 Offset in bits from start of class _________________| | | | |
3628 Type number for base class ___________________________| | | |
3629 Visibility specifiers (2) _______________________________| | |
3630 Offset in bits from start of class ________________________| |
3631 Type number of base class ____________________________________|
3633 Return 1 for success, 0 for (error-type-inducing) failure. */
3639 read_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
3640 struct objfile
*objfile
)
3643 struct nextfield
*new;
3651 /* Skip the '!' baseclass information marker. */
3655 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3658 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
3664 /* Some stupid compilers have trouble with the following, so break
3665 it up into simpler expressions. */
3666 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
3667 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
3670 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
3673 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
3674 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
3678 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
3680 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
3682 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3683 make_cleanup (xfree
, new);
3684 memset (new, 0, sizeof (struct nextfield
));
3685 new->next
= fip
->list
;
3687 FIELD_BITSIZE (new->field
) = 0; /* this should be an unpacked field! */
3689 STABS_CONTINUE (pp
, objfile
);
3693 /* Nothing to do. */
3696 SET_TYPE_FIELD_VIRTUAL (type
, i
);
3699 /* Unknown character. Complain and treat it as non-virtual. */
3701 static struct complaint msg
=
3703 "Unknown virtual character `%c' for baseclass", 0, 0};
3704 complain (&msg
, **pp
);
3709 new->visibility
= *(*pp
)++;
3710 switch (new->visibility
)
3712 case VISIBILITY_PRIVATE
:
3713 case VISIBILITY_PROTECTED
:
3714 case VISIBILITY_PUBLIC
:
3717 /* Bad visibility format. Complain and treat it as
3720 static struct complaint msg
=
3722 "Unknown visibility `%c' for baseclass", 0, 0
3724 complain (&msg
, new->visibility
);
3725 new->visibility
= VISIBILITY_PUBLIC
;
3732 /* The remaining value is the bit offset of the portion of the object
3733 corresponding to this baseclass. Always zero in the absence of
3734 multiple inheritance. */
3736 FIELD_BITPOS (new->field
) = read_huge_number (pp
, ',', &nbits
);
3741 /* The last piece of baseclass information is the type of the
3742 base class. Read it, and remember it's type name as this
3745 new->field
.type
= read_type (pp
, objfile
);
3746 new->field
.name
= type_name_no_tag (new->field
.type
);
3748 /* skip trailing ';' and bump count of number of fields seen */
3757 /* The tail end of stabs for C++ classes that contain a virtual function
3758 pointer contains a tilde, a %, and a type number.
3759 The type number refers to the base class (possibly this class itself) which
3760 contains the vtable pointer for the current class.
3762 This function is called when we have parsed all the method declarations,
3763 so we can look for the vptr base class info. */
3766 read_tilde_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3767 struct objfile
*objfile
)
3771 STABS_CONTINUE (pp
, objfile
);
3773 /* If we are positioned at a ';', then skip it. */
3783 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
3785 /* Obsolete flags that used to indicate the presence
3786 of constructors and/or destructors. */
3790 /* Read either a '%' or the final ';'. */
3791 if (*(*pp
)++ == '%')
3793 /* The next number is the type number of the base class
3794 (possibly our own class) which supplies the vtable for
3795 this class. Parse it out, and search that class to find
3796 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3797 and TYPE_VPTR_FIELDNO. */
3802 t
= read_type (pp
, objfile
);
3804 while (*p
!= '\0' && *p
!= ';')
3810 /* Premature end of symbol. */
3814 TYPE_VPTR_BASETYPE (type
) = t
;
3815 if (type
== t
) /* Our own class provides vtbl ptr */
3817 for (i
= TYPE_NFIELDS (t
) - 1;
3818 i
>= TYPE_N_BASECLASSES (t
);
3821 if (!strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
3822 sizeof (vptr_name
) - 1))
3824 TYPE_VPTR_FIELDNO (type
) = i
;
3828 /* Virtual function table field not found. */
3829 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
3834 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
3845 attach_fn_fields_to_type (struct field_info
*fip
, register struct type
*type
)
3849 for (n
= TYPE_NFN_FIELDS (type
);
3850 fip
->fnlist
!= NULL
;
3851 fip
->fnlist
= fip
->fnlist
->next
)
3853 --n
; /* Circumvent Sun3 compiler bug */
3854 TYPE_FN_FIELDLISTS (type
)[n
] = fip
->fnlist
->fn_fieldlist
;
3859 /* read cfront class static data.
3860 pp points to string starting with the list of static data
3861 eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
3864 A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
3869 read_cfront_static_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3870 struct objfile
*objfile
)
3872 struct nextfield
*new;
3875 struct symbol
*ref_static
= 0;
3877 if (**pp
== ';') /* no static data; return */
3883 /* Process each field in the list until we find the terminating ";" */
3885 /* eg: p = "as__1A ;;;" */
3886 STABS_CONTINUE (pp
, objfile
); /* handle \\ */
3887 while (**pp
!= ';' && (sname
= get_substring (pp
, ' '), sname
))
3889 ref_static
= lookup_symbol (sname
, 0, VAR_NAMESPACE
, 0, 0); /*demangled_name */
3892 static struct complaint msg
=
3894 Unable to find symbol for static data field %s\n",
3896 complain (&msg
, sname
);
3899 stype
= SYMBOL_TYPE (ref_static
);
3901 /* allocate a new fip */
3902 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3903 make_cleanup (xfree
, new);
3904 memset (new, 0, sizeof (struct nextfield
));
3905 new->next
= fip
->list
;
3908 /* set visibility */
3909 /* FIXME! no way to tell visibility from stabs??? */
3910 new->visibility
= VISIBILITY_PUBLIC
;
3912 /* set field info into fip */
3913 fip
->list
->field
.type
= stype
;
3915 /* set bitpos & bitsize */
3916 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (sname
, strlen (sname
)));
3918 /* set name field */
3919 /* The following is code to work around cfront generated stabs.
3920 The stabs contains full mangled name for each field.
3921 We try to demangle the name and extract the field name out of it.
3926 dem
= cplus_demangle (sname
, DMGL_ANSI
| DMGL_PARAMS
);
3929 dem_p
= strrchr (dem
, ':');
3930 if (dem_p
!= 0 && *(dem_p
- 1) == ':')
3932 fip
->list
->field
.name
=
3933 obsavestring (dem_p
, strlen (dem_p
), &objfile
->type_obstack
);
3937 fip
->list
->field
.name
=
3938 obsavestring (sname
, strlen (sname
), &objfile
->type_obstack
);
3940 } /* end of code for cfront work around */
3941 } /* loop again for next static field */
3945 /* Copy structure fields to fip so attach_fields_to_type will work.
3946 type has already been created with the initial instance data fields.
3947 Now we want to be able to add the other members to the class,
3948 so we want to add them back to the fip and reattach them again
3949 once we have collected all the class members. */
3952 copy_cfront_struct_fields (struct field_info
*fip
, struct type
*type
,
3953 struct objfile
*objfile
)
3955 int nfields
= TYPE_NFIELDS (type
);
3957 struct nextfield
*new;
3959 /* Copy the fields into the list of fips and reset the types
3960 to remove the old fields */
3962 for (i
= 0; i
< nfields
; i
++)
3964 /* allocate a new fip */
3965 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3966 make_cleanup (xfree
, new);
3967 memset (new, 0, sizeof (struct nextfield
));
3968 new->next
= fip
->list
;
3971 /* copy field info into fip */
3972 new->field
= TYPE_FIELD (type
, i
);
3973 /* set visibility */
3974 if (TYPE_FIELD_PROTECTED (type
, i
))
3975 new->visibility
= VISIBILITY_PROTECTED
;
3976 else if (TYPE_FIELD_PRIVATE (type
, i
))
3977 new->visibility
= VISIBILITY_PRIVATE
;
3979 new->visibility
= VISIBILITY_PUBLIC
;
3981 /* Now delete the fields from the type since we will be
3982 allocing new space once we get the rest of the fields
3983 in attach_fields_to_type.
3984 The pointer TYPE_FIELDS(type) is left dangling but should
3985 be freed later by objstack_free */
3986 TYPE_FIELDS (type
) = 0;
3987 TYPE_NFIELDS (type
) = 0;
3992 /* Create the vector of fields, and record how big it is.
3993 We need this info to record proper virtual function table information
3994 for this class's virtual functions. */
3997 attach_fields_to_type (struct field_info
*fip
, register struct type
*type
,
3998 struct objfile
*objfile
)
4000 register int nfields
= 0;
4001 register int non_public_fields
= 0;
4002 register struct nextfield
*scan
;
4004 /* Count up the number of fields that we have, as well as taking note of
4005 whether or not there are any non-public fields, which requires us to
4006 allocate and build the private_field_bits and protected_field_bits
4009 for (scan
= fip
->list
; scan
!= NULL
; scan
= scan
->next
)
4012 if (scan
->visibility
!= VISIBILITY_PUBLIC
)
4014 non_public_fields
++;
4018 /* Now we know how many fields there are, and whether or not there are any
4019 non-public fields. Record the field count, allocate space for the
4020 array of fields, and create blank visibility bitfields if necessary. */
4022 TYPE_NFIELDS (type
) = nfields
;
4023 TYPE_FIELDS (type
) = (struct field
*)
4024 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
4025 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
4027 if (non_public_fields
)
4029 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
4031 TYPE_FIELD_PRIVATE_BITS (type
) =
4032 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
4033 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
4035 TYPE_FIELD_PROTECTED_BITS (type
) =
4036 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
4037 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
4039 TYPE_FIELD_IGNORE_BITS (type
) =
4040 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
4041 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
4044 /* Copy the saved-up fields into the field vector. Start from the head
4045 of the list, adding to the tail of the field array, so that they end
4046 up in the same order in the array in which they were added to the list. */
4048 while (nfields
-- > 0)
4050 TYPE_FIELD (type
, nfields
) = fip
->list
->field
;
4051 switch (fip
->list
->visibility
)
4053 case VISIBILITY_PRIVATE
:
4054 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
4057 case VISIBILITY_PROTECTED
:
4058 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
4061 case VISIBILITY_IGNORE
:
4062 SET_TYPE_FIELD_IGNORE (type
, nfields
);
4065 case VISIBILITY_PUBLIC
:
4069 /* Unknown visibility. Complain and treat it as public. */
4071 static struct complaint msg
=
4073 "Unknown visibility `%c' for field", 0, 0};
4074 complain (&msg
, fip
->list
->visibility
);
4078 fip
->list
= fip
->list
->next
;
4083 /* Read the description of a structure (or union type) and return an object
4084 describing the type.
4086 PP points to a character pointer that points to the next unconsumed token
4087 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
4088 *PP will point to "4a:1,0,32;;".
4090 TYPE points to an incomplete type that needs to be filled in.
4092 OBJFILE points to the current objfile from which the stabs information is
4093 being read. (Note that it is redundant in that TYPE also contains a pointer
4094 to this same objfile, so it might be a good idea to eliminate it. FIXME).
4097 static struct type
*
4098 read_struct_type (char **pp
, struct type
*type
, struct objfile
*objfile
)
4100 struct cleanup
*back_to
;
4101 struct field_info fi
;
4106 back_to
= make_cleanup (null_cleanup
, 0);
4108 INIT_CPLUS_SPECIFIC (type
);
4109 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
4111 /* First comes the total size in bytes. */
4115 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
4117 return error_type (pp
, objfile
);
4120 /* Now read the baseclasses, if any, read the regular C struct or C++
4121 class member fields, attach the fields to the type, read the C++
4122 member functions, attach them to the type, and then read any tilde
4123 field (baseclass specifier for the class holding the main vtable). */
4125 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
4126 || !read_struct_fields (&fi
, pp
, type
, objfile
)
4127 || !attach_fields_to_type (&fi
, type
, objfile
)
4128 || !read_member_functions (&fi
, pp
, type
, objfile
)
4129 || !attach_fn_fields_to_type (&fi
, type
)
4130 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
4132 type
= error_type (pp
, objfile
);
4135 /* Fix up any cv-qualified versions of this type. */
4136 finish_cv_type (type
);
4137 do_cleanups (back_to
);
4141 /* Read a definition of an array type,
4142 and create and return a suitable type object.
4143 Also creates a range type which represents the bounds of that
4146 static struct type
*
4147 read_array_type (register char **pp
, register struct type
*type
,
4148 struct objfile
*objfile
)
4150 struct type
*index_type
, *element_type
, *range_type
;
4155 /* Format of an array type:
4156 "ar<index type>;lower;upper;<array_contents_type>".
4157 OS9000: "arlower,upper;<array_contents_type>".
4159 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
4160 for these, produce a type like float[][]. */
4163 index_type
= builtin_type_int
;
4166 index_type
= read_type (pp
, objfile
);
4168 /* Improper format of array type decl. */
4169 return error_type (pp
, objfile
);
4173 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
4178 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
4180 return error_type (pp
, objfile
);
4182 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
4187 upper
= read_huge_number (pp
, ';', &nbits
);
4189 return error_type (pp
, objfile
);
4191 element_type
= read_type (pp
, objfile
);
4200 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
4201 type
= create_array_type (type
, element_type
, range_type
);
4207 /* Read a definition of an enumeration type,
4208 and create and return a suitable type object.
4209 Also defines the symbols that represent the values of the type. */
4211 static struct type
*
4212 read_enum_type (register char **pp
, register struct type
*type
,
4213 struct objfile
*objfile
)
4218 register struct symbol
*sym
;
4220 struct pending
**symlist
;
4221 struct pending
*osyms
, *syms
;
4224 int unsigned_enum
= 1;
4227 /* FIXME! The stabs produced by Sun CC merrily define things that ought
4228 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
4229 to do? For now, force all enum values to file scope. */
4230 if (within_function
)
4231 symlist
= &local_symbols
;
4234 symlist
= &file_symbols
;
4236 o_nsyms
= osyms
? osyms
->nsyms
: 0;
4240 /* Size. Perhaps this does not have to be conditionalized on
4241 os9k_stabs (assuming the name of an enum constant can't start
4243 read_huge_number (pp
, 0, &nbits
);
4245 return error_type (pp
, objfile
);
4248 /* The aix4 compiler emits an extra field before the enum members;
4249 my guess is it's a type of some sort. Just ignore it. */
4252 /* Skip over the type. */
4256 /* Skip over the colon. */
4260 /* Read the value-names and their values.
4261 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
4262 A semicolon or comma instead of a NAME means the end. */
4263 while (**pp
&& **pp
!= ';' && **pp
!= ',')
4265 STABS_CONTINUE (pp
, objfile
);
4269 name
= obsavestring (*pp
, p
- *pp
, &objfile
->symbol_obstack
);
4271 n
= read_huge_number (pp
, ',', &nbits
);
4273 return error_type (pp
, objfile
);
4275 sym
= (struct symbol
*)
4276 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
4277 memset (sym
, 0, sizeof (struct symbol
));
4278 SYMBOL_NAME (sym
) = name
;
4279 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
4280 SYMBOL_CLASS (sym
) = LOC_CONST
;
4281 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
4282 SYMBOL_VALUE (sym
) = n
;
4285 add_symbol_to_list (sym
, symlist
);
4290 (*pp
)++; /* Skip the semicolon. */
4292 /* Now fill in the fields of the type-structure. */
4294 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
4295 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
4296 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
4298 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
4299 TYPE_NFIELDS (type
) = nsyms
;
4300 TYPE_FIELDS (type
) = (struct field
*)
4301 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
4302 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
4304 /* Find the symbols for the values and put them into the type.
4305 The symbols can be found in the symlist that we put them on
4306 to cause them to be defined. osyms contains the old value
4307 of that symlist; everything up to there was defined by us. */
4308 /* Note that we preserve the order of the enum constants, so
4309 that in something like "enum {FOO, LAST_THING=FOO}" we print
4310 FOO, not LAST_THING. */
4312 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
4314 int last
= syms
== osyms
? o_nsyms
: 0;
4315 int j
= syms
->nsyms
;
4316 for (; --j
>= last
; --n
)
4318 struct symbol
*xsym
= syms
->symbol
[j
];
4319 SYMBOL_TYPE (xsym
) = type
;
4320 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
4321 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
4322 TYPE_FIELD_BITSIZE (type
, n
) = 0;
4331 /* Sun's ACC uses a somewhat saner method for specifying the builtin
4332 typedefs in every file (for int, long, etc):
4334 type = b <signed> <width> <format type>; <offset>; <nbits>
4336 optional format type = c or b for char or boolean.
4337 offset = offset from high order bit to start bit of type.
4338 width is # bytes in object of this type, nbits is # bits in type.
4340 The width/offset stuff appears to be for small objects stored in
4341 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
4344 static struct type
*
4345 read_sun_builtin_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
4350 enum type_code code
= TYPE_CODE_INT
;
4361 return error_type (pp
, objfile
);
4365 /* For some odd reason, all forms of char put a c here. This is strange
4366 because no other type has this honor. We can safely ignore this because
4367 we actually determine 'char'acterness by the number of bits specified in
4369 Boolean forms, e.g Fortran logical*X, put a b here. */
4373 else if (**pp
== 'b')
4375 code
= TYPE_CODE_BOOL
;
4379 /* The first number appears to be the number of bytes occupied
4380 by this type, except that unsigned short is 4 instead of 2.
4381 Since this information is redundant with the third number,
4382 we will ignore it. */
4383 read_huge_number (pp
, ';', &nbits
);
4385 return error_type (pp
, objfile
);
4387 /* The second number is always 0, so ignore it too. */
4388 read_huge_number (pp
, ';', &nbits
);
4390 return error_type (pp
, objfile
);
4392 /* The third number is the number of bits for this type. */
4393 type_bits
= read_huge_number (pp
, 0, &nbits
);
4395 return error_type (pp
, objfile
);
4396 /* The type *should* end with a semicolon. If it are embedded
4397 in a larger type the semicolon may be the only way to know where
4398 the type ends. If this type is at the end of the stabstring we
4399 can deal with the omitted semicolon (but we don't have to like
4400 it). Don't bother to complain(), Sun's compiler omits the semicolon
4406 return init_type (TYPE_CODE_VOID
, 1,
4407 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
4410 return init_type (code
,
4411 type_bits
/ TARGET_CHAR_BIT
,
4412 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
4416 static struct type
*
4417 read_sun_floating_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
4423 /* The first number has more details about the type, for example
4425 details
= read_huge_number (pp
, ';', &nbits
);
4427 return error_type (pp
, objfile
);
4429 /* The second number is the number of bytes occupied by this type */
4430 nbytes
= read_huge_number (pp
, ';', &nbits
);
4432 return error_type (pp
, objfile
);
4434 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
4435 || details
== NF_COMPLEX32
)
4436 /* This is a type we can't handle, but we do know the size.
4437 We also will be able to give it a name. */
4438 return init_type (TYPE_CODE_COMPLEX
, nbytes
, 0, NULL
, objfile
);
4440 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
4443 /* Read a number from the string pointed to by *PP.
4444 The value of *PP is advanced over the number.
4445 If END is nonzero, the character that ends the
4446 number must match END, or an error happens;
4447 and that character is skipped if it does match.
4448 If END is zero, *PP is left pointing to that character.
4450 If the number fits in a long, set *BITS to 0 and return the value.
4451 If not, set *BITS to be the number of bits in the number and return 0.
4453 If encounter garbage, set *BITS to -1 and return 0. */
4456 read_huge_number (char **pp
, int end
, int *bits
)
4473 /* Leading zero means octal. GCC uses this to output values larger
4474 than an int (because that would be hard in decimal). */
4482 upper_limit
= ULONG_MAX
/ radix
;
4484 upper_limit
= LONG_MAX
/ radix
;
4486 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
4488 if (n
<= upper_limit
)
4491 n
+= c
- '0'; /* FIXME this overflows anyway */
4496 /* This depends on large values being output in octal, which is
4503 /* Ignore leading zeroes. */
4507 else if (c
== '2' || c
== '3')
4533 /* Large decimal constants are an error (because it is hard to
4534 count how many bits are in them). */
4540 /* -0x7f is the same as 0x80. So deal with it by adding one to
4541 the number of bits. */
4553 /* It's *BITS which has the interesting information. */
4557 static struct type
*
4558 read_range_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
4560 char *orig_pp
= *pp
;
4565 struct type
*result_type
;
4566 struct type
*index_type
= NULL
;
4568 /* First comes a type we are a subrange of.
4569 In C it is usually 0, 1 or the type being defined. */
4570 if (read_type_number (pp
, rangenums
) != 0)
4571 return error_type (pp
, objfile
);
4572 self_subrange
= (rangenums
[0] == typenums
[0] &&
4573 rangenums
[1] == typenums
[1]);
4578 index_type
= read_type (pp
, objfile
);
4581 /* A semicolon should now follow; skip it. */
4585 /* The remaining two operands are usually lower and upper bounds
4586 of the range. But in some special cases they mean something else. */
4587 n2
= read_huge_number (pp
, ';', &n2bits
);
4588 n3
= read_huge_number (pp
, ';', &n3bits
);
4590 if (n2bits
== -1 || n3bits
== -1)
4591 return error_type (pp
, objfile
);
4594 goto handle_true_range
;
4596 /* If limits are huge, must be large integral type. */
4597 if (n2bits
!= 0 || n3bits
!= 0)
4599 char got_signed
= 0;
4600 char got_unsigned
= 0;
4601 /* Number of bits in the type. */
4604 /* Range from 0 to <large number> is an unsigned large integral type. */
4605 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
4610 /* Range from <large number> to <large number>-1 is a large signed
4611 integral type. Take care of the case where <large number> doesn't
4612 fit in a long but <large number>-1 does. */
4613 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
4614 || (n2bits
!= 0 && n3bits
== 0
4615 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
4622 if (got_signed
|| got_unsigned
)
4624 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
4625 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
4629 return error_type (pp
, objfile
);
4632 /* A type defined as a subrange of itself, with bounds both 0, is void. */
4633 if (self_subrange
&& n2
== 0 && n3
== 0)
4634 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
4636 /* If n3 is zero and n2 is positive, we want a floating type, and n2
4637 is the width in bytes.
4639 Fortran programs appear to use this for complex types also. To
4640 distinguish between floats and complex, g77 (and others?) seem
4641 to use self-subranges for the complexes, and subranges of int for
4644 Also note that for complexes, g77 sets n2 to the size of one of
4645 the member floats, not the whole complex beast. My guess is that
4646 this was to work well with pre-COMPLEX versions of gdb. */
4648 if (n3
== 0 && n2
> 0)
4650 struct type
*float_type
4651 = init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
4655 struct type
*complex_type
=
4656 init_type (TYPE_CODE_COMPLEX
, 2 * n2
, 0, NULL
, objfile
);
4657 TYPE_TARGET_TYPE (complex_type
) = float_type
;
4658 return complex_type
;
4664 /* If the upper bound is -1, it must really be an unsigned int. */
4666 else if (n2
== 0 && n3
== -1)
4668 /* It is unsigned int or unsigned long. */
4669 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
4670 compatibility hack. */
4671 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4672 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
4675 /* Special case: char is defined (Who knows why) as a subrange of
4676 itself with range 0-127. */
4677 else if (self_subrange
&& n2
== 0 && n3
== 127)
4678 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
4680 else if (current_symbol
&& SYMBOL_LANGUAGE (current_symbol
) == language_chill
4682 goto handle_true_range
;
4684 /* We used to do this only for subrange of self or subrange of int. */
4687 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
4688 "unsigned long", and we already checked for that,
4689 so don't need to test for it here. */
4692 /* n3 actually gives the size. */
4693 return init_type (TYPE_CODE_INT
, -n3
, TYPE_FLAG_UNSIGNED
,
4696 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
4697 unsigned n-byte integer. But do require n to be a power of
4698 two; we don't want 3- and 5-byte integers flying around. */
4704 for (bytes
= 0; (bits
& 0xff) == 0xff; bytes
++)
4707 && ((bytes
- 1) & bytes
) == 0) /* "bytes is a power of two" */
4708 return init_type (TYPE_CODE_INT
, bytes
, TYPE_FLAG_UNSIGNED
, NULL
,
4712 /* I think this is for Convex "long long". Since I don't know whether
4713 Convex sets self_subrange, I also accept that particular size regardless
4714 of self_subrange. */
4715 else if (n3
== 0 && n2
< 0
4717 || n2
== -TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
4718 return init_type (TYPE_CODE_INT
, -n2
, 0, NULL
, objfile
);
4719 else if (n2
== -n3
- 1)
4722 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
4724 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
4725 if (n3
== 0x7fffffff)
4726 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
4729 /* We have a real range type on our hands. Allocate space and
4730 return a real pointer. */
4734 index_type
= builtin_type_int
;
4736 index_type
= *dbx_lookup_type (rangenums
);
4737 if (index_type
== NULL
)
4739 /* Does this actually ever happen? Is that why we are worrying
4740 about dealing with it rather than just calling error_type? */
4742 static struct type
*range_type_index
;
4744 complain (&range_type_base_complaint
, rangenums
[1]);
4745 if (range_type_index
== NULL
)
4747 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
4748 0, "range type index type", NULL
);
4749 index_type
= range_type_index
;
4752 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
4753 return (result_type
);
4756 /* Read in an argument list. This is a list of types, separated by commas
4757 and terminated with END. Return the list of types read in, or (struct type
4758 **)-1 if there is an error. */
4760 static struct type
**
4761 read_args (char **pp
, int end
, struct objfile
*objfile
)
4763 /* FIXME! Remove this arbitrary limit! */
4764 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
4770 /* Invalid argument list: no ','. */
4771 return (struct type
**) -1;
4773 STABS_CONTINUE (pp
, objfile
);
4774 types
[n
++] = read_type (pp
, objfile
);
4776 (*pp
)++; /* get past `end' (the ':' character) */
4780 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
4782 else if (TYPE_CODE (types
[n
- 1]) != TYPE_CODE_VOID
)
4784 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
4785 memset (rval
+ n
, 0, sizeof (struct type
*));
4789 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
4791 memcpy (rval
, types
, n
* sizeof (struct type
*));
4795 /* Common block handling. */
4797 /* List of symbols declared since the last BCOMM. This list is a tail
4798 of local_symbols. When ECOMM is seen, the symbols on the list
4799 are noted so their proper addresses can be filled in later,
4800 using the common block base address gotten from the assembler
4803 static struct pending
*common_block
;
4804 static int common_block_i
;
4806 /* Name of the current common block. We get it from the BCOMM instead of the
4807 ECOMM to match IBM documentation (even though IBM puts the name both places
4808 like everyone else). */
4809 static char *common_block_name
;
4811 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4812 to remain after this function returns. */
4815 common_block_start (char *name
, struct objfile
*objfile
)
4817 if (common_block_name
!= NULL
)
4819 static struct complaint msg
=
4821 "Invalid symbol data: common block within common block",
4825 common_block
= local_symbols
;
4826 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
4827 common_block_name
= obsavestring (name
, strlen (name
),
4828 &objfile
->symbol_obstack
);
4831 /* Process a N_ECOMM symbol. */
4834 common_block_end (struct objfile
*objfile
)
4836 /* Symbols declared since the BCOMM are to have the common block
4837 start address added in when we know it. common_block and
4838 common_block_i point to the first symbol after the BCOMM in
4839 the local_symbols list; copy the list and hang it off the
4840 symbol for the common block name for later fixup. */
4843 struct pending
*new = 0;
4844 struct pending
*next
;
4847 if (common_block_name
== NULL
)
4849 static struct complaint msg
=
4850 {"ECOMM symbol unmatched by BCOMM", 0, 0};
4855 sym
= (struct symbol
*)
4856 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
4857 memset (sym
, 0, sizeof (struct symbol
));
4858 /* Note: common_block_name already saved on symbol_obstack */
4859 SYMBOL_NAME (sym
) = common_block_name
;
4860 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
4862 /* Now we copy all the symbols which have been defined since the BCOMM. */
4864 /* Copy all the struct pendings before common_block. */
4865 for (next
= local_symbols
;
4866 next
!= NULL
&& next
!= common_block
;
4869 for (j
= 0; j
< next
->nsyms
; j
++)
4870 add_symbol_to_list (next
->symbol
[j
], &new);
4873 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4874 NULL, it means copy all the local symbols (which we already did
4877 if (common_block
!= NULL
)
4878 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
4879 add_symbol_to_list (common_block
->symbol
[j
], &new);
4881 SYMBOL_TYPE (sym
) = (struct type
*) new;
4883 /* Should we be putting local_symbols back to what it was?
4886 i
= hashname (SYMBOL_NAME (sym
));
4887 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
4888 global_sym_chain
[i
] = sym
;
4889 common_block_name
= NULL
;
4892 /* Add a common block's start address to the offset of each symbol
4893 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4894 the common block name). */
4897 fix_common_block (struct symbol
*sym
, int valu
)
4899 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
4900 for (; next
; next
= next
->next
)
4903 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
4904 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
4910 /* What about types defined as forward references inside of a small lexical
4912 /* Add a type to the list of undefined types to be checked through
4913 once this file has been read in. */
4916 add_undefined_type (struct type
*type
)
4918 if (undef_types_length
== undef_types_allocated
)
4920 undef_types_allocated
*= 2;
4921 undef_types
= (struct type
**)
4922 xrealloc ((char *) undef_types
,
4923 undef_types_allocated
* sizeof (struct type
*));
4925 undef_types
[undef_types_length
++] = type
;
4928 /* Go through each undefined type, see if it's still undefined, and fix it
4929 up if possible. We have two kinds of undefined types:
4931 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4932 Fix: update array length using the element bounds
4933 and the target type's length.
4934 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4935 yet defined at the time a pointer to it was made.
4936 Fix: Do a full lookup on the struct/union tag. */
4938 cleanup_undefined_types (void)
4942 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
4944 switch (TYPE_CODE (*type
))
4947 case TYPE_CODE_STRUCT
:
4948 case TYPE_CODE_UNION
:
4949 case TYPE_CODE_ENUM
:
4951 /* Check if it has been defined since. Need to do this here
4952 as well as in check_typedef to deal with the (legitimate in
4953 C though not C++) case of several types with the same name
4954 in different source files. */
4955 if (TYPE_STUB (*type
))
4957 struct pending
*ppt
;
4959 /* Name of the type, without "struct" or "union" */
4960 char *typename
= TYPE_TAG_NAME (*type
);
4962 if (typename
== NULL
)
4964 static struct complaint msg
=
4965 {"need a type name", 0, 0};
4969 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
4971 for (i
= 0; i
< ppt
->nsyms
; i
++)
4973 struct symbol
*sym
= ppt
->symbol
[i
];
4975 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4976 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
4977 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
4979 && STREQ (SYMBOL_NAME (sym
), typename
))
4981 memcpy (*type
, SYMBOL_TYPE (sym
),
4982 sizeof (struct type
));
4992 static struct complaint msg
=
4994 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
4995 complain (&msg
, TYPE_CODE (*type
));
5001 undef_types_length
= 0;
5004 /* Scan through all of the global symbols defined in the object file,
5005 assigning values to the debugging symbols that need to be assigned
5006 to. Get these symbols from the minimal symbol table. */
5009 scan_file_globals (struct objfile
*objfile
)
5012 struct minimal_symbol
*msymbol
;
5013 struct symbol
*sym
, *prev
, *rsym
;
5014 struct objfile
*resolve_objfile
;
5016 /* SVR4 based linkers copy referenced global symbols from shared
5017 libraries to the main executable.
5018 If we are scanning the symbols for a shared library, try to resolve
5019 them from the minimal symbols of the main executable first. */
5021 if (symfile_objfile
&& objfile
!= symfile_objfile
)
5022 resolve_objfile
= symfile_objfile
;
5024 resolve_objfile
= objfile
;
5028 /* Avoid expensive loop through all minimal symbols if there are
5029 no unresolved symbols. */
5030 for (hash
= 0; hash
< HASHSIZE
; hash
++)
5032 if (global_sym_chain
[hash
])
5035 if (hash
>= HASHSIZE
)
5038 for (msymbol
= resolve_objfile
->msymbols
;
5039 msymbol
&& SYMBOL_NAME (msymbol
) != NULL
;
5044 /* Skip static symbols. */
5045 switch (MSYMBOL_TYPE (msymbol
))
5057 /* Get the hash index and check all the symbols
5058 under that hash index. */
5060 hash
= hashname (SYMBOL_NAME (msymbol
));
5062 for (sym
= global_sym_chain
[hash
]; sym
;)
5064 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
5065 STREQ (SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
5068 struct alias_list
*aliases
;
5070 /* Splice this symbol out of the hash chain and
5071 assign the value we have to it. */
5074 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
5078 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
5081 /* Check to see whether we need to fix up a common block. */
5082 /* Note: this code might be executed several times for
5083 the same symbol if there are multiple references. */
5085 /* If symbol has aliases, do minimal symbol fixups for each.
5086 These live aliases/references weren't added to
5087 global_sym_chain hash but may also need to be fixed up. */
5088 /* FIXME: Maybe should have added aliases to the global chain, resolved symbol name, then treated aliases as normal
5089 symbols? Still, we wouldn't want to add_to_list. */
5090 /* Now do the same for each alias of this symbol */
5092 aliases
= SYMBOL_ALIASES (sym
);
5095 if (SYMBOL_CLASS (rsym
) == LOC_BLOCK
)
5097 fix_common_block (rsym
,
5098 SYMBOL_VALUE_ADDRESS (msymbol
));
5102 SYMBOL_VALUE_ADDRESS (rsym
)
5103 = SYMBOL_VALUE_ADDRESS (msymbol
);
5105 SYMBOL_SECTION (rsym
) = SYMBOL_SECTION (msymbol
);
5108 rsym
= aliases
->sym
;
5109 aliases
= aliases
->next
;
5118 sym
= SYMBOL_VALUE_CHAIN (prev
);
5122 sym
= global_sym_chain
[hash
];
5128 sym
= SYMBOL_VALUE_CHAIN (sym
);
5132 if (resolve_objfile
== objfile
)
5134 resolve_objfile
= objfile
;
5137 /* Change the storage class of any remaining unresolved globals to
5138 LOC_UNRESOLVED and remove them from the chain. */
5139 for (hash
= 0; hash
< HASHSIZE
; hash
++)
5141 sym
= global_sym_chain
[hash
];
5145 sym
= SYMBOL_VALUE_CHAIN (sym
);
5147 /* Change the symbol address from the misleading chain value
5149 SYMBOL_VALUE_ADDRESS (prev
) = 0;
5151 /* Complain about unresolved common block symbols. */
5152 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
5153 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
5155 complain (&unresolved_sym_chain_complaint
,
5156 objfile
->name
, SYMBOL_NAME (prev
));
5159 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
5162 /* Initialize anything that needs initializing when starting to read
5163 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
5167 stabsread_init (void)
5171 /* Initialize anything that needs initializing when a completely new
5172 symbol file is specified (not just adding some symbols from another
5173 file, e.g. a shared library). */
5176 stabsread_new_init (void)
5178 /* Empty the hash table of global syms looking for values. */
5179 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
5182 /* Initialize anything that needs initializing at the same time as
5183 start_symtab() is called. */
5188 global_stabs
= NULL
; /* AIX COFF */
5189 /* Leave FILENUM of 0 free for builtin types and this file's types. */
5190 n_this_object_header_files
= 1;
5191 type_vector_length
= 0;
5192 type_vector
= (struct type
**) 0;
5194 /* FIXME: If common_block_name is not already NULL, we should complain(). */
5195 common_block_name
= NULL
;
5200 /* Call after end_symtab() */
5207 xfree (type_vector
);
5210 type_vector_length
= 0;
5211 previous_stab_code
= 0;
5215 finish_global_stabs (struct objfile
*objfile
)
5219 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
5220 xfree (global_stabs
);
5221 global_stabs
= NULL
;
5225 /* Initializer for this module */
5228 _initialize_stabsread (void)
5230 undef_types_allocated
= 20;
5231 undef_types_length
= 0;
5232 undef_types
= (struct type
**)
5233 xmalloc (undef_types_allocated
* sizeof (struct type
*));