1 /* Support routines for decoding "stabs" debugging information format.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* Support routines for reading and decoding debugging information in
21 the "stabs" format. This format is used with many systems that use
22 the a.out object file format, as well as some systems that use
23 COFF or ELF where the stabs data is placed in a special section.
24 Avoid placing any object file format specific code in this file. */
27 #include "gdb_string.h"
29 #include "gdb_obstack.h"
32 #include "expression.h"
35 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */
37 #include "aout/aout64.h"
38 #include "gdb-stabs.h"
40 #include "complaints.h"
42 #include "gdb-demangle.h"
46 #include "cp-support.h"
47 #include "gdb_assert.h"
51 /* Ask stabsread.h to define the vars it normally declares `extern'. */
54 #include "stabsread.h" /* Our own declarations */
57 extern void _initialize_stabsread (void);
59 /* The routines that read and process a complete stabs for a C struct or
60 C++ class pass lists of data member fields and lists of member function
61 fields in an instance of a field_info structure, as defined below.
62 This is part of some reorganization of low level C++ support and is
63 expected to eventually go away... (FIXME) */
69 struct nextfield
*next
;
71 /* This is the raw visibility from the stab. It is not checked
72 for being one of the visibilities we recognize, so code which
73 examines this field better be able to deal. */
79 struct next_fnfieldlist
81 struct next_fnfieldlist
*next
;
82 struct fn_fieldlist fn_fieldlist
;
88 read_one_struct_field (struct field_info
*, char **, char *,
89 struct type
*, struct objfile
*);
91 static struct type
*dbx_alloc_type (int[2], struct objfile
*);
93 static long read_huge_number (char **, int, int *, int);
95 static struct type
*error_type (char **, struct objfile
*);
98 patch_block_stabs (struct pending
*, struct pending_stabs
*,
101 static void fix_common_block (struct symbol
*, CORE_ADDR
);
103 static int read_type_number (char **, int *);
105 static struct type
*read_type (char **, struct objfile
*);
107 static struct type
*read_range_type (char **, int[2], int, struct objfile
*);
109 static struct type
*read_sun_builtin_type (char **, int[2], struct objfile
*);
111 static struct type
*read_sun_floating_type (char **, int[2],
114 static struct type
*read_enum_type (char **, struct type
*, struct objfile
*);
116 static struct type
*rs6000_builtin_type (int, struct objfile
*);
119 read_member_functions (struct field_info
*, char **, struct type
*,
123 read_struct_fields (struct field_info
*, char **, struct type
*,
127 read_baseclasses (struct field_info
*, char **, struct type
*,
131 read_tilde_fields (struct field_info
*, char **, struct type
*,
134 static int attach_fn_fields_to_type (struct field_info
*, struct type
*);
136 static int attach_fields_to_type (struct field_info
*, struct type
*,
139 static struct type
*read_struct_type (char **, struct type
*,
143 static struct type
*read_array_type (char **, struct type
*,
146 static struct field
*read_args (char **, int, struct objfile
*, int *, int *);
148 static void add_undefined_type (struct type
*, int[2]);
151 read_cpp_abbrev (struct field_info
*, char **, struct type
*,
154 static char *find_name_end (char *name
);
156 static int process_reference (char **string
);
158 void stabsread_clear_cache (void);
160 static const char vptr_name
[] = "_vptr$";
161 static const char vb_name
[] = "_vb$";
164 invalid_cpp_abbrev_complaint (const char *arg1
)
166 complaint (&symfile_complaints
, _("invalid C++ abbreviation `%s'"), arg1
);
170 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
172 complaint (&symfile_complaints
,
173 _("register number %d too large (max %d) in symbol %s"),
174 regnum
, num_regs
- 1, sym
);
178 stabs_general_complaint (const char *arg1
)
180 complaint (&symfile_complaints
, "%s", arg1
);
183 /* Make a list of forward references which haven't been defined. */
185 static struct type
**undef_types
;
186 static int undef_types_allocated
;
187 static int undef_types_length
;
188 static struct symbol
*current_symbol
= NULL
;
190 /* Make a list of nameless types that are undefined.
191 This happens when another type is referenced by its number
192 before this type is actually defined. For instance "t(0,1)=k(0,2)"
193 and type (0,2) is defined only later. */
200 static struct nat
*noname_undefs
;
201 static int noname_undefs_allocated
;
202 static int noname_undefs_length
;
204 /* Check for and handle cretinous stabs symbol name continuation! */
205 #define STABS_CONTINUE(pp,objfile) \
207 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
208 *(pp) = next_symbol_text (objfile); \
212 /* Look up a dbx type-number pair. Return the address of the slot
213 where the type for that number-pair is stored.
214 The number-pair is in TYPENUMS.
216 This can be used for finding the type associated with that pair
217 or for associating a new type with the pair. */
219 static struct type
**
220 dbx_lookup_type (int typenums
[2], struct objfile
*objfile
)
222 int filenum
= typenums
[0];
223 int index
= typenums
[1];
226 struct header_file
*f
;
229 if (filenum
== -1) /* -1,-1 is for temporary types. */
232 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
234 complaint (&symfile_complaints
,
235 _("Invalid symbol data: type number "
236 "(%d,%d) out of range at symtab pos %d."),
237 filenum
, index
, symnum
);
245 /* Caller wants address of address of type. We think
246 that negative (rs6k builtin) types will never appear as
247 "lvalues", (nor should they), so we stuff the real type
248 pointer into a temp, and return its address. If referenced,
249 this will do the right thing. */
250 static struct type
*temp_type
;
252 temp_type
= rs6000_builtin_type (index
, objfile
);
256 /* Type is defined outside of header files.
257 Find it in this object file's type vector. */
258 if (index
>= type_vector_length
)
260 old_len
= type_vector_length
;
263 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
264 type_vector
= (struct type
**)
265 xmalloc (type_vector_length
* sizeof (struct type
*));
267 while (index
>= type_vector_length
)
269 type_vector_length
*= 2;
271 type_vector
= (struct type
**)
272 xrealloc ((char *) type_vector
,
273 (type_vector_length
* sizeof (struct type
*)));
274 memset (&type_vector
[old_len
], 0,
275 (type_vector_length
- old_len
) * sizeof (struct type
*));
277 return (&type_vector
[index
]);
281 real_filenum
= this_object_header_files
[filenum
];
283 if (real_filenum
>= N_HEADER_FILES (objfile
))
285 static struct type
*temp_type
;
287 warning (_("GDB internal error: bad real_filenum"));
290 temp_type
= objfile_type (objfile
)->builtin_error
;
294 f
= HEADER_FILES (objfile
) + real_filenum
;
296 f_orig_length
= f
->length
;
297 if (index
>= f_orig_length
)
299 while (index
>= f
->length
)
303 f
->vector
= (struct type
**)
304 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
305 memset (&f
->vector
[f_orig_length
], 0,
306 (f
->length
- f_orig_length
) * sizeof (struct type
*));
308 return (&f
->vector
[index
]);
312 /* Make sure there is a type allocated for type numbers TYPENUMS
313 and return the type object.
314 This can create an empty (zeroed) type object.
315 TYPENUMS may be (-1, -1) to return a new type object that is not
316 put into the type vector, and so may not be referred to by number. */
319 dbx_alloc_type (int typenums
[2], struct objfile
*objfile
)
321 struct type
**type_addr
;
323 if (typenums
[0] == -1)
325 return (alloc_type (objfile
));
328 type_addr
= dbx_lookup_type (typenums
, objfile
);
330 /* If we are referring to a type not known at all yet,
331 allocate an empty type for it.
332 We will fill it in later if we find out how. */
335 *type_addr
= alloc_type (objfile
);
341 /* for all the stabs in a given stab vector, build appropriate types
342 and fix their symbols in given symbol vector. */
345 patch_block_stabs (struct pending
*symbols
, struct pending_stabs
*stabs
,
346 struct objfile
*objfile
)
355 /* for all the stab entries, find their corresponding symbols and
356 patch their types! */
358 for (ii
= 0; ii
< stabs
->count
; ++ii
)
360 name
= stabs
->stab
[ii
];
361 pp
= (char *) strchr (name
, ':');
362 gdb_assert (pp
); /* Must find a ':' or game's over. */
366 pp
= (char *) strchr (pp
, ':');
368 sym
= find_symbol_in_list (symbols
, name
, pp
- name
);
371 /* FIXME-maybe: it would be nice if we noticed whether
372 the variable was defined *anywhere*, not just whether
373 it is defined in this compilation unit. But neither
374 xlc or GCC seem to need such a definition, and until
375 we do psymtabs (so that the minimal symbols from all
376 compilation units are available now), I'm not sure
377 how to get the information. */
379 /* On xcoff, if a global is defined and never referenced,
380 ld will remove it from the executable. There is then
381 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
382 sym
= (struct symbol
*)
383 obstack_alloc (&objfile
->objfile_obstack
,
384 sizeof (struct symbol
));
386 memset (sym
, 0, sizeof (struct symbol
));
387 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
388 SYMBOL_ACLASS_INDEX (sym
) = LOC_OPTIMIZED_OUT
;
389 SYMBOL_SET_LINKAGE_NAME
390 (sym
, obstack_copy0 (&objfile
->objfile_obstack
,
393 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
395 /* I don't think the linker does this with functions,
396 so as far as I know this is never executed.
397 But it doesn't hurt to check. */
399 lookup_function_type (read_type (&pp
, objfile
));
403 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
405 add_symbol_to_list (sym
, &global_symbols
);
410 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
413 lookup_function_type (read_type (&pp
, objfile
));
417 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
425 /* Read a number by which a type is referred to in dbx data,
426 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
427 Just a single number N is equivalent to (0,N).
428 Return the two numbers by storing them in the vector TYPENUMS.
429 TYPENUMS will then be used as an argument to dbx_lookup_type.
431 Returns 0 for success, -1 for error. */
434 read_type_number (char **pp
, int *typenums
)
441 typenums
[0] = read_huge_number (pp
, ',', &nbits
, 0);
444 typenums
[1] = read_huge_number (pp
, ')', &nbits
, 0);
451 typenums
[1] = read_huge_number (pp
, 0, &nbits
, 0);
459 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
460 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
461 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
462 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
464 /* Structure for storing pointers to reference definitions for fast lookup
465 during "process_later". */
474 #define MAX_CHUNK_REFS 100
475 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
476 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
478 static struct ref_map
*ref_map
;
480 /* Ptr to free cell in chunk's linked list. */
481 static int ref_count
= 0;
483 /* Number of chunks malloced. */
484 static int ref_chunk
= 0;
486 /* This file maintains a cache of stabs aliases found in the symbol
487 table. If the symbol table changes, this cache must be cleared
488 or we are left holding onto data in invalid obstacks. */
490 stabsread_clear_cache (void)
496 /* Create array of pointers mapping refids to symbols and stab strings.
497 Add pointers to reference definition symbols and/or their values as we
498 find them, using their reference numbers as our index.
499 These will be used later when we resolve references. */
501 ref_add (int refnum
, struct symbol
*sym
, char *stabs
, CORE_ADDR value
)
505 if (refnum
>= ref_count
)
506 ref_count
= refnum
+ 1;
507 if (ref_count
> ref_chunk
* MAX_CHUNK_REFS
)
509 int new_slots
= ref_count
- ref_chunk
* MAX_CHUNK_REFS
;
510 int new_chunks
= new_slots
/ MAX_CHUNK_REFS
+ 1;
512 ref_map
= (struct ref_map
*)
513 xrealloc (ref_map
, REF_MAP_SIZE (ref_chunk
+ new_chunks
));
514 memset (ref_map
+ ref_chunk
* MAX_CHUNK_REFS
, 0,
515 new_chunks
* REF_CHUNK_SIZE
);
516 ref_chunk
+= new_chunks
;
518 ref_map
[refnum
].stabs
= stabs
;
519 ref_map
[refnum
].sym
= sym
;
520 ref_map
[refnum
].value
= value
;
523 /* Return defined sym for the reference REFNUM. */
525 ref_search (int refnum
)
527 if (refnum
< 0 || refnum
> ref_count
)
529 return ref_map
[refnum
].sym
;
532 /* Parse a reference id in STRING and return the resulting
533 reference number. Move STRING beyond the reference id. */
536 process_reference (char **string
)
544 /* Advance beyond the initial '#'. */
547 /* Read number as reference id. */
548 while (*p
&& isdigit (*p
))
550 refnum
= refnum
* 10 + *p
- '0';
557 /* If STRING defines a reference, store away a pointer to the reference
558 definition for later use. Return the reference number. */
561 symbol_reference_defined (char **string
)
566 refnum
= process_reference (&p
);
568 /* Defining symbols end in '='. */
571 /* Symbol is being defined here. */
577 /* Must be a reference. Either the symbol has already been defined,
578 or this is a forward reference to it. */
585 stab_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
587 int regno
= gdbarch_stab_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
589 if (regno
>= gdbarch_num_regs (gdbarch
)
590 + gdbarch_num_pseudo_regs (gdbarch
))
592 reg_value_complaint (regno
,
593 gdbarch_num_regs (gdbarch
)
594 + gdbarch_num_pseudo_regs (gdbarch
),
595 SYMBOL_PRINT_NAME (sym
));
597 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
603 static const struct symbol_register_ops stab_register_funcs
= {
607 /* The "aclass" indices for computed symbols. */
609 static int stab_register_index
;
610 static int stab_regparm_index
;
613 define_symbol (CORE_ADDR valu
, char *string
, int desc
, int type
,
614 struct objfile
*objfile
)
616 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
618 char *p
= (char *) find_name_end (string
);
622 char *new_name
= NULL
;
624 /* We would like to eliminate nameless symbols, but keep their types.
625 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
626 to type 2, but, should not create a symbol to address that type. Since
627 the symbol will be nameless, there is no way any user can refer to it. */
631 /* Ignore syms with empty names. */
635 /* Ignore old-style symbols from cc -go. */
645 complaint (&symfile_complaints
,
646 _("Bad stabs string '%s'"), string
);
651 /* If a nameless stab entry, all we need is the type, not the symbol.
652 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
653 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
655 current_symbol
= sym
= (struct symbol
*)
656 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
657 memset (sym
, 0, sizeof (struct symbol
));
659 switch (type
& N_TYPE
)
662 SYMBOL_SECTION (sym
) = SECT_OFF_TEXT (objfile
);
665 SYMBOL_SECTION (sym
) = SECT_OFF_DATA (objfile
);
668 SYMBOL_SECTION (sym
) = SECT_OFF_BSS (objfile
);
672 if (processing_gcc_compilation
)
674 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
675 number of bytes occupied by a type or object, which we ignore. */
676 SYMBOL_LINE (sym
) = desc
;
680 SYMBOL_LINE (sym
) = 0; /* unknown */
683 if (is_cplus_marker (string
[0]))
685 /* Special GNU C++ names. */
689 SYMBOL_SET_LINKAGE_NAME (sym
, "this");
692 case 'v': /* $vtbl_ptr_type */
696 SYMBOL_SET_LINKAGE_NAME (sym
, "eh_throw");
700 /* This was an anonymous type that was never fixed up. */
704 /* SunPRO (3.0 at least) static variable encoding. */
705 if (gdbarch_static_transform_name_p (gdbarch
))
707 /* ... fall through ... */
710 complaint (&symfile_complaints
, _("Unknown C++ symbol name `%s'"),
712 goto normal
; /* Do *something* with it. */
718 SYMBOL_SET_LANGUAGE (sym
, current_subfile
->language
);
719 if (SYMBOL_LANGUAGE (sym
) == language_cplus
)
721 char *name
= alloca (p
- string
+ 1);
723 memcpy (name
, string
, p
- string
);
724 name
[p
- string
] = '\0';
725 new_name
= cp_canonicalize_string (name
);
727 if (new_name
!= NULL
)
729 SYMBOL_SET_NAMES (sym
, new_name
, strlen (new_name
), 1, objfile
);
733 SYMBOL_SET_NAMES (sym
, string
, p
- string
, 1, objfile
);
735 if (SYMBOL_LANGUAGE (sym
) == language_cplus
)
736 cp_scan_for_anonymous_namespaces (sym
, objfile
);
741 /* Determine the type of name being defined. */
743 /* Getting GDB to correctly skip the symbol on an undefined symbol
744 descriptor and not ever dump core is a very dodgy proposition if
745 we do things this way. I say the acorn RISC machine can just
746 fix their compiler. */
747 /* The Acorn RISC machine's compiler can put out locals that don't
748 start with "234=" or "(3,4)=", so assume anything other than the
749 deftypes we know how to handle is a local. */
750 if (!strchr ("cfFGpPrStTvVXCR", *p
))
752 if (isdigit (*p
) || *p
== '(' || *p
== '-')
761 /* c is a special case, not followed by a type-number.
762 SYMBOL:c=iVALUE for an integer constant symbol.
763 SYMBOL:c=rVALUE for a floating constant symbol.
764 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
765 e.g. "b:c=e6,0" for "const b = blob1"
766 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
769 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
770 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
771 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
772 add_symbol_to_list (sym
, &file_symbols
);
782 struct type
*dbl_type
;
784 /* FIXME-if-picky-about-floating-accuracy: Should be using
785 target arithmetic to get the value. real.c in GCC
786 probably has the necessary code. */
788 dbl_type
= objfile_type (objfile
)->builtin_double
;
790 obstack_alloc (&objfile
->objfile_obstack
,
791 TYPE_LENGTH (dbl_type
));
792 store_typed_floating (dbl_valu
, dbl_type
, d
);
794 SYMBOL_TYPE (sym
) = dbl_type
;
795 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
796 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST_BYTES
;
801 /* Defining integer constants this way is kind of silly,
802 since 'e' constants allows the compiler to give not
803 only the value, but the type as well. C has at least
804 int, long, unsigned int, and long long as constant
805 types; other languages probably should have at least
806 unsigned as well as signed constants. */
808 SYMBOL_TYPE (sym
) = objfile_type (objfile
)->builtin_long
;
809 SYMBOL_VALUE (sym
) = atoi (p
);
810 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
816 SYMBOL_TYPE (sym
) = objfile_type (objfile
)->builtin_char
;
817 SYMBOL_VALUE (sym
) = atoi (p
);
818 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
824 struct type
*range_type
;
827 gdb_byte
*string_local
= (gdb_byte
*) alloca (strlen (p
));
828 gdb_byte
*string_value
;
830 if (quote
!= '\'' && quote
!= '"')
832 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
833 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
834 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
835 add_symbol_to_list (sym
, &file_symbols
);
839 /* Find matching quote, rejecting escaped quotes. */
840 while (*p
&& *p
!= quote
)
842 if (*p
== '\\' && p
[1] == quote
)
844 string_local
[ind
] = (gdb_byte
) quote
;
850 string_local
[ind
] = (gdb_byte
) (*p
);
857 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
858 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
859 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
860 add_symbol_to_list (sym
, &file_symbols
);
864 /* NULL terminate the string. */
865 string_local
[ind
] = 0;
867 = create_range_type (NULL
,
868 objfile_type (objfile
)->builtin_int
,
870 SYMBOL_TYPE (sym
) = create_array_type (NULL
,
871 objfile_type (objfile
)->builtin_char
,
873 string_value
= obstack_alloc (&objfile
->objfile_obstack
, ind
+ 1);
874 memcpy (string_value
, string_local
, ind
+ 1);
877 SYMBOL_VALUE_BYTES (sym
) = string_value
;
878 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST_BYTES
;
883 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
884 can be represented as integral.
885 e.g. "b:c=e6,0" for "const b = blob1"
886 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
888 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
889 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
893 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
898 /* If the value is too big to fit in an int (perhaps because
899 it is unsigned), or something like that, we silently get
900 a bogus value. The type and everything else about it is
901 correct. Ideally, we should be using whatever we have
902 available for parsing unsigned and long long values,
904 SYMBOL_VALUE (sym
) = atoi (p
);
909 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
910 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
913 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
914 add_symbol_to_list (sym
, &file_symbols
);
918 /* The name of a caught exception. */
919 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
920 SYMBOL_ACLASS_INDEX (sym
) = LOC_LABEL
;
921 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
922 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
923 add_symbol_to_list (sym
, &local_symbols
);
927 /* A static function definition. */
928 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
929 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
930 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
931 add_symbol_to_list (sym
, &file_symbols
);
932 /* fall into process_function_types. */
934 process_function_types
:
935 /* Function result types are described as the result type in stabs.
936 We need to convert this to the function-returning-type-X type
937 in GDB. E.g. "int" is converted to "function returning int". */
938 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
939 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
941 /* All functions in C++ have prototypes. Stabs does not offer an
942 explicit way to identify prototyped or unprototyped functions,
943 but both GCC and Sun CC emit stabs for the "call-as" type rather
944 than the "declared-as" type for unprototyped functions, so
945 we treat all functions as if they were prototyped. This is used
946 primarily for promotion when calling the function from GDB. */
947 TYPE_PROTOTYPED (SYMBOL_TYPE (sym
)) = 1;
949 /* fall into process_prototype_types. */
951 process_prototype_types
:
952 /* Sun acc puts declared types of arguments here. */
955 struct type
*ftype
= SYMBOL_TYPE (sym
);
960 /* Obtain a worst case guess for the number of arguments
961 by counting the semicolons. */
968 /* Allocate parameter information fields and fill them in. */
969 TYPE_FIELDS (ftype
) = (struct field
*)
970 TYPE_ALLOC (ftype
, nsemi
* sizeof (struct field
));
975 /* A type number of zero indicates the start of varargs.
976 FIXME: GDB currently ignores vararg functions. */
977 if (p
[0] == '0' && p
[1] == '\0')
979 ptype
= read_type (&p
, objfile
);
981 /* The Sun compilers mark integer arguments, which should
982 be promoted to the width of the calling conventions, with
983 a type which references itself. This type is turned into
984 a TYPE_CODE_VOID type by read_type, and we have to turn
985 it back into builtin_int here.
986 FIXME: Do we need a new builtin_promoted_int_arg ? */
987 if (TYPE_CODE (ptype
) == TYPE_CODE_VOID
)
988 ptype
= objfile_type (objfile
)->builtin_int
;
989 TYPE_FIELD_TYPE (ftype
, nparams
) = ptype
;
990 TYPE_FIELD_ARTIFICIAL (ftype
, nparams
++) = 0;
992 TYPE_NFIELDS (ftype
) = nparams
;
993 TYPE_PROTOTYPED (ftype
) = 1;
998 /* A global function definition. */
999 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1000 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
1001 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1002 add_symbol_to_list (sym
, &global_symbols
);
1003 goto process_function_types
;
1006 /* For a class G (global) symbol, it appears that the
1007 value is not correct. It is necessary to search for the
1008 corresponding linker definition to find the value.
1009 These definitions appear at the end of the namelist. */
1010 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1011 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1012 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1013 /* Don't add symbol references to global_sym_chain.
1014 Symbol references don't have valid names and wont't match up with
1015 minimal symbols when the global_sym_chain is relocated.
1016 We'll fixup symbol references when we fixup the defining symbol. */
1017 if (SYMBOL_LINKAGE_NAME (sym
) && SYMBOL_LINKAGE_NAME (sym
)[0] != '#')
1019 i
= hashname (SYMBOL_LINKAGE_NAME (sym
));
1020 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
1021 global_sym_chain
[i
] = sym
;
1023 add_symbol_to_list (sym
, &global_symbols
);
1026 /* This case is faked by a conditional above,
1027 when there is no code letter in the dbx data.
1028 Dbx data never actually contains 'l'. */
1031 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1032 SYMBOL_ACLASS_INDEX (sym
) = LOC_LOCAL
;
1033 SYMBOL_VALUE (sym
) = valu
;
1034 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1035 add_symbol_to_list (sym
, &local_symbols
);
1040 /* pF is a two-letter code that means a function parameter in Fortran.
1041 The type-number specifies the type of the return value.
1042 Translate it into a pointer-to-function type. */
1046 = lookup_pointer_type
1047 (lookup_function_type (read_type (&p
, objfile
)));
1050 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1052 SYMBOL_ACLASS_INDEX (sym
) = LOC_ARG
;
1053 SYMBOL_VALUE (sym
) = valu
;
1054 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1055 SYMBOL_IS_ARGUMENT (sym
) = 1;
1056 add_symbol_to_list (sym
, &local_symbols
);
1058 if (gdbarch_byte_order (gdbarch
) != BFD_ENDIAN_BIG
)
1060 /* On little-endian machines, this crud is never necessary,
1061 and, if the extra bytes contain garbage, is harmful. */
1065 /* If it's gcc-compiled, if it says `short', believe it. */
1066 if (processing_gcc_compilation
1067 || gdbarch_believe_pcc_promotion (gdbarch
))
1070 if (!gdbarch_believe_pcc_promotion (gdbarch
))
1072 /* If PCC says a parameter is a short or a char, it is
1074 if (TYPE_LENGTH (SYMBOL_TYPE (sym
))
1075 < gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
1076 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
1079 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
1080 ? objfile_type (objfile
)->builtin_unsigned_int
1081 : objfile_type (objfile
)->builtin_int
;
1087 /* acc seems to use P to declare the prototypes of functions that
1088 are referenced by this file. gdb is not prepared to deal
1089 with this extra information. FIXME, it ought to. */
1092 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1093 goto process_prototype_types
;
1098 /* Parameter which is in a register. */
1099 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1100 SYMBOL_ACLASS_INDEX (sym
) = stab_register_index
;
1101 SYMBOL_IS_ARGUMENT (sym
) = 1;
1102 SYMBOL_VALUE (sym
) = valu
;
1103 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1104 add_symbol_to_list (sym
, &local_symbols
);
1108 /* Register variable (either global or local). */
1109 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1110 SYMBOL_ACLASS_INDEX (sym
) = stab_register_index
;
1111 SYMBOL_VALUE (sym
) = valu
;
1112 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1113 if (within_function
)
1115 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1116 the same name to represent an argument passed in a
1117 register. GCC uses 'P' for the same case. So if we find
1118 such a symbol pair we combine it into one 'P' symbol.
1119 For Sun cc we need to do this regardless of
1120 stabs_argument_has_addr, because the compiler puts out
1121 the 'p' symbol even if it never saves the argument onto
1124 On most machines, we want to preserve both symbols, so
1125 that we can still get information about what is going on
1126 with the stack (VAX for computing args_printed, using
1127 stack slots instead of saved registers in backtraces,
1130 Note that this code illegally combines
1131 main(argc) struct foo argc; { register struct foo argc; }
1132 but this case is considered pathological and causes a warning
1133 from a decent compiler. */
1136 && local_symbols
->nsyms
> 0
1137 && gdbarch_stabs_argument_has_addr (gdbarch
, SYMBOL_TYPE (sym
)))
1139 struct symbol
*prev_sym
;
1141 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1142 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1143 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1144 && strcmp (SYMBOL_LINKAGE_NAME (prev_sym
),
1145 SYMBOL_LINKAGE_NAME (sym
)) == 0)
1147 SYMBOL_ACLASS_INDEX (prev_sym
) = stab_register_index
;
1148 /* Use the type from the LOC_REGISTER; that is the type
1149 that is actually in that register. */
1150 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1151 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1156 add_symbol_to_list (sym
, &local_symbols
);
1159 add_symbol_to_list (sym
, &file_symbols
);
1163 /* Static symbol at top level of file. */
1164 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1165 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1166 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1167 if (gdbarch_static_transform_name_p (gdbarch
)
1168 && gdbarch_static_transform_name (gdbarch
,
1169 SYMBOL_LINKAGE_NAME (sym
))
1170 != SYMBOL_LINKAGE_NAME (sym
))
1172 struct minimal_symbol
*msym
;
1174 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
1178 const char *new_name
= gdbarch_static_transform_name
1179 (gdbarch
, SYMBOL_LINKAGE_NAME (sym
));
1181 SYMBOL_SET_LINKAGE_NAME (sym
, new_name
);
1182 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1185 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1186 add_symbol_to_list (sym
, &file_symbols
);
1190 /* In Ada, there is no distinction between typedef and non-typedef;
1191 any type declaration implicitly has the equivalent of a typedef,
1192 and thus 't' is in fact equivalent to 'Tt'.
1194 Therefore, for Ada units, we check the character immediately
1195 before the 't', and if we do not find a 'T', then make sure to
1196 create the associated symbol in the STRUCT_DOMAIN ('t' definitions
1197 will be stored in the VAR_DOMAIN). If the symbol was indeed
1198 defined as 'Tt' then the STRUCT_DOMAIN symbol will be created
1199 elsewhere, so we don't need to take care of that.
1201 This is important to do, because of forward references:
1202 The cleanup of undefined types stored in undef_types only uses
1203 STRUCT_DOMAIN symbols to perform the replacement. */
1204 synonym
= (SYMBOL_LANGUAGE (sym
) == language_ada
&& p
[-2] != 'T');
1207 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1209 /* For a nameless type, we don't want a create a symbol, thus we
1210 did not use `sym'. Return without further processing. */
1214 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
1215 SYMBOL_VALUE (sym
) = valu
;
1216 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1217 /* C++ vagaries: we may have a type which is derived from
1218 a base type which did not have its name defined when the
1219 derived class was output. We fill in the derived class's
1220 base part member's name here in that case. */
1221 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1222 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1223 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1224 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1228 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1229 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1230 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1231 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1234 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1236 /* gcc-2.6 or later (when using -fvtable-thunks)
1237 emits a unique named type for a vtable entry.
1238 Some gdb code depends on that specific name. */
1239 extern const char vtbl_ptr_name
[];
1241 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1242 && strcmp (SYMBOL_LINKAGE_NAME (sym
), vtbl_ptr_name
))
1243 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1245 /* If we are giving a name to a type such as "pointer to
1246 foo" or "function returning foo", we better not set
1247 the TYPE_NAME. If the program contains "typedef char
1248 *caddr_t;", we don't want all variables of type char
1249 * to print as caddr_t. This is not just a
1250 consequence of GDB's type management; PCC and GCC (at
1251 least through version 2.4) both output variables of
1252 either type char * or caddr_t with the type number
1253 defined in the 't' symbol for caddr_t. If a future
1254 compiler cleans this up it GDB is not ready for it
1255 yet, but if it becomes ready we somehow need to
1256 disable this check (without breaking the PCC/GCC2.4
1261 Fortunately, this check seems not to be necessary
1262 for anything except pointers or functions. */
1263 /* ezannoni: 2000-10-26. This seems to apply for
1264 versions of gcc older than 2.8. This was the original
1265 problem: with the following code gdb would tell that
1266 the type for name1 is caddr_t, and func is char().
1268 typedef char *caddr_t;
1280 /* Pascal accepts names for pointer types. */
1281 if (current_subfile
->language
== language_pascal
)
1283 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_LINKAGE_NAME (sym
);
1287 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_LINKAGE_NAME (sym
);
1290 add_symbol_to_list (sym
, &file_symbols
);
1294 /* Create the STRUCT_DOMAIN clone. */
1295 struct symbol
*struct_sym
= (struct symbol
*)
1296 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
1299 SYMBOL_ACLASS_INDEX (struct_sym
) = LOC_TYPEDEF
;
1300 SYMBOL_VALUE (struct_sym
) = valu
;
1301 SYMBOL_DOMAIN (struct_sym
) = STRUCT_DOMAIN
;
1302 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1303 TYPE_NAME (SYMBOL_TYPE (sym
))
1304 = obconcat (&objfile
->objfile_obstack
,
1305 SYMBOL_LINKAGE_NAME (sym
),
1307 add_symbol_to_list (struct_sym
, &file_symbols
);
1313 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1314 by 't' which means we are typedef'ing it as well. */
1315 synonym
= *p
== 't';
1320 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1322 /* For a nameless type, we don't want a create a symbol, thus we
1323 did not use `sym'. Return without further processing. */
1327 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
1328 SYMBOL_VALUE (sym
) = valu
;
1329 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
1330 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1331 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1332 = obconcat (&objfile
->objfile_obstack
,
1333 SYMBOL_LINKAGE_NAME (sym
),
1335 add_symbol_to_list (sym
, &file_symbols
);
1339 /* Clone the sym and then modify it. */
1340 struct symbol
*typedef_sym
= (struct symbol
*)
1341 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
1343 *typedef_sym
= *sym
;
1344 SYMBOL_ACLASS_INDEX (typedef_sym
) = LOC_TYPEDEF
;
1345 SYMBOL_VALUE (typedef_sym
) = valu
;
1346 SYMBOL_DOMAIN (typedef_sym
) = VAR_DOMAIN
;
1347 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1348 TYPE_NAME (SYMBOL_TYPE (sym
))
1349 = obconcat (&objfile
->objfile_obstack
,
1350 SYMBOL_LINKAGE_NAME (sym
),
1352 add_symbol_to_list (typedef_sym
, &file_symbols
);
1357 /* Static symbol of local scope. */
1358 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1359 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1360 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1361 if (gdbarch_static_transform_name_p (gdbarch
)
1362 && gdbarch_static_transform_name (gdbarch
,
1363 SYMBOL_LINKAGE_NAME (sym
))
1364 != SYMBOL_LINKAGE_NAME (sym
))
1366 struct minimal_symbol
*msym
;
1368 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
1372 const char *new_name
= gdbarch_static_transform_name
1373 (gdbarch
, SYMBOL_LINKAGE_NAME (sym
));
1375 SYMBOL_SET_LINKAGE_NAME (sym
, new_name
);
1376 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1379 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1380 add_symbol_to_list (sym
, &local_symbols
);
1384 /* Reference parameter */
1385 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1386 SYMBOL_ACLASS_INDEX (sym
) = LOC_REF_ARG
;
1387 SYMBOL_IS_ARGUMENT (sym
) = 1;
1388 SYMBOL_VALUE (sym
) = valu
;
1389 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1390 add_symbol_to_list (sym
, &local_symbols
);
1394 /* Reference parameter which is in a register. */
1395 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1396 SYMBOL_ACLASS_INDEX (sym
) = stab_regparm_index
;
1397 SYMBOL_IS_ARGUMENT (sym
) = 1;
1398 SYMBOL_VALUE (sym
) = valu
;
1399 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1400 add_symbol_to_list (sym
, &local_symbols
);
1404 /* This is used by Sun FORTRAN for "function result value".
1405 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1406 that Pascal uses it too, but when I tried it Pascal used
1407 "x:3" (local symbol) instead. */
1408 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1409 SYMBOL_ACLASS_INDEX (sym
) = LOC_LOCAL
;
1410 SYMBOL_VALUE (sym
) = valu
;
1411 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1412 add_symbol_to_list (sym
, &local_symbols
);
1416 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1417 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
1418 SYMBOL_VALUE (sym
) = 0;
1419 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1420 add_symbol_to_list (sym
, &file_symbols
);
1424 /* Some systems pass variables of certain types by reference instead
1425 of by value, i.e. they will pass the address of a structure (in a
1426 register or on the stack) instead of the structure itself. */
1428 if (gdbarch_stabs_argument_has_addr (gdbarch
, SYMBOL_TYPE (sym
))
1429 && SYMBOL_IS_ARGUMENT (sym
))
1431 /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for
1432 variables passed in a register). */
1433 if (SYMBOL_CLASS (sym
) == LOC_REGISTER
)
1434 SYMBOL_ACLASS_INDEX (sym
) = LOC_REGPARM_ADDR
;
1435 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1436 and subsequent arguments on SPARC, for example). */
1437 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
1438 SYMBOL_ACLASS_INDEX (sym
) = LOC_REF_ARG
;
1444 /* Skip rest of this symbol and return an error type.
1446 General notes on error recovery: error_type always skips to the
1447 end of the symbol (modulo cretinous dbx symbol name continuation).
1448 Thus code like this:
1450 if (*(*pp)++ != ';')
1451 return error_type (pp, objfile);
1453 is wrong because if *pp starts out pointing at '\0' (typically as the
1454 result of an earlier error), it will be incremented to point to the
1455 start of the next symbol, which might produce strange results, at least
1456 if you run off the end of the string table. Instead use
1459 return error_type (pp, objfile);
1465 foo = error_type (pp, objfile);
1469 And in case it isn't obvious, the point of all this hair is so the compiler
1470 can define new types and new syntaxes, and old versions of the
1471 debugger will be able to read the new symbol tables. */
1473 static struct type
*
1474 error_type (char **pp
, struct objfile
*objfile
)
1476 complaint (&symfile_complaints
,
1477 _("couldn't parse type; debugger out of date?"));
1480 /* Skip to end of symbol. */
1481 while (**pp
!= '\0')
1486 /* Check for and handle cretinous dbx symbol name continuation! */
1487 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1489 *pp
= next_symbol_text (objfile
);
1496 return objfile_type (objfile
)->builtin_error
;
1500 /* Read type information or a type definition; return the type. Even
1501 though this routine accepts either type information or a type
1502 definition, the distinction is relevant--some parts of stabsread.c
1503 assume that type information starts with a digit, '-', or '(' in
1504 deciding whether to call read_type. */
1506 static struct type
*
1507 read_type (char **pp
, struct objfile
*objfile
)
1509 struct type
*type
= 0;
1512 char type_descriptor
;
1514 /* Size in bits of type if specified by a type attribute, or -1 if
1515 there is no size attribute. */
1518 /* Used to distinguish string and bitstring from char-array and set. */
1521 /* Used to distinguish vector from array. */
1524 /* Read type number if present. The type number may be omitted.
1525 for instance in a two-dimensional array declared with type
1526 "ar1;1;10;ar1;1;10;4". */
1527 if ((**pp
>= '0' && **pp
<= '9')
1531 if (read_type_number (pp
, typenums
) != 0)
1532 return error_type (pp
, objfile
);
1536 /* Type is not being defined here. Either it already
1537 exists, or this is a forward reference to it.
1538 dbx_alloc_type handles both cases. */
1539 type
= dbx_alloc_type (typenums
, objfile
);
1541 /* If this is a forward reference, arrange to complain if it
1542 doesn't get patched up by the time we're done
1544 if (TYPE_CODE (type
) == TYPE_CODE_UNDEF
)
1545 add_undefined_type (type
, typenums
);
1550 /* Type is being defined here. */
1552 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1557 /* 'typenums=' not present, type is anonymous. Read and return
1558 the definition, but don't put it in the type vector. */
1559 typenums
[0] = typenums
[1] = -1;
1564 type_descriptor
= (*pp
)[-1];
1565 switch (type_descriptor
)
1569 enum type_code code
;
1571 /* Used to index through file_symbols. */
1572 struct pending
*ppt
;
1575 /* Name including "struct", etc. */
1579 char *from
, *to
, *p
, *q1
, *q2
;
1581 /* Set the type code according to the following letter. */
1585 code
= TYPE_CODE_STRUCT
;
1588 code
= TYPE_CODE_UNION
;
1591 code
= TYPE_CODE_ENUM
;
1595 /* Complain and keep going, so compilers can invent new
1596 cross-reference types. */
1597 complaint (&symfile_complaints
,
1598 _("Unrecognized cross-reference type `%c'"),
1600 code
= TYPE_CODE_STRUCT
;
1605 q1
= strchr (*pp
, '<');
1606 p
= strchr (*pp
, ':');
1608 return error_type (pp
, objfile
);
1609 if (q1
&& p
> q1
&& p
[1] == ':')
1611 int nesting_level
= 0;
1613 for (q2
= q1
; *q2
; q2
++)
1617 else if (*q2
== '>')
1619 else if (*q2
== ':' && nesting_level
== 0)
1624 return error_type (pp
, objfile
);
1627 if (current_subfile
->language
== language_cplus
)
1629 char *new_name
, *name
= alloca (p
- *pp
+ 1);
1631 memcpy (name
, *pp
, p
- *pp
);
1632 name
[p
- *pp
] = '\0';
1633 new_name
= cp_canonicalize_string (name
);
1634 if (new_name
!= NULL
)
1636 type_name
= obstack_copy0 (&objfile
->objfile_obstack
,
1637 new_name
, strlen (new_name
));
1641 if (type_name
== NULL
)
1643 to
= type_name
= (char *)
1644 obstack_alloc (&objfile
->objfile_obstack
, p
- *pp
+ 1);
1646 /* Copy the name. */
1653 /* Set the pointer ahead of the name which we just read, and
1658 /* If this type has already been declared, then reuse the same
1659 type, rather than allocating a new one. This saves some
1662 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1663 for (i
= 0; i
< ppt
->nsyms
; i
++)
1665 struct symbol
*sym
= ppt
->symbol
[i
];
1667 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1668 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
1669 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1670 && strcmp (SYMBOL_LINKAGE_NAME (sym
), type_name
) == 0)
1672 obstack_free (&objfile
->objfile_obstack
, type_name
);
1673 type
= SYMBOL_TYPE (sym
);
1674 if (typenums
[0] != -1)
1675 *dbx_lookup_type (typenums
, objfile
) = type
;
1680 /* Didn't find the type to which this refers, so we must
1681 be dealing with a forward reference. Allocate a type
1682 structure for it, and keep track of it so we can
1683 fill in the rest of the fields when we get the full
1685 type
= dbx_alloc_type (typenums
, objfile
);
1686 TYPE_CODE (type
) = code
;
1687 TYPE_TAG_NAME (type
) = type_name
;
1688 INIT_CPLUS_SPECIFIC (type
);
1689 TYPE_STUB (type
) = 1;
1691 add_undefined_type (type
, typenums
);
1695 case '-': /* RS/6000 built-in type */
1709 /* We deal with something like t(1,2)=(3,4)=... which
1710 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1712 /* Allocate and enter the typedef type first.
1713 This handles recursive types. */
1714 type
= dbx_alloc_type (typenums
, objfile
);
1715 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1717 struct type
*xtype
= read_type (pp
, objfile
);
1721 /* It's being defined as itself. That means it is "void". */
1722 TYPE_CODE (type
) = TYPE_CODE_VOID
;
1723 TYPE_LENGTH (type
) = 1;
1725 else if (type_size
>= 0 || is_string
)
1727 /* This is the absolute wrong way to construct types. Every
1728 other debug format has found a way around this problem and
1729 the related problems with unnecessarily stubbed types;
1730 someone motivated should attempt to clean up the issue
1731 here as well. Once a type pointed to has been created it
1732 should not be modified.
1734 Well, it's not *absolutely* wrong. Constructing recursive
1735 types (trees, linked lists) necessarily entails modifying
1736 types after creating them. Constructing any loop structure
1737 entails side effects. The Dwarf 2 reader does handle this
1738 more gracefully (it never constructs more than once
1739 instance of a type object, so it doesn't have to copy type
1740 objects wholesale), but it still mutates type objects after
1741 other folks have references to them.
1743 Keep in mind that this circularity/mutation issue shows up
1744 at the source language level, too: C's "incomplete types",
1745 for example. So the proper cleanup, I think, would be to
1746 limit GDB's type smashing to match exactly those required
1747 by the source language. So GDB could have a
1748 "complete_this_type" function, but never create unnecessary
1749 copies of a type otherwise. */
1750 replace_type (type
, xtype
);
1751 TYPE_NAME (type
) = NULL
;
1752 TYPE_TAG_NAME (type
) = NULL
;
1756 TYPE_TARGET_STUB (type
) = 1;
1757 TYPE_TARGET_TYPE (type
) = xtype
;
1762 /* In the following types, we must be sure to overwrite any existing
1763 type that the typenums refer to, rather than allocating a new one
1764 and making the typenums point to the new one. This is because there
1765 may already be pointers to the existing type (if it had been
1766 forward-referenced), and we must change it to a pointer, function,
1767 reference, or whatever, *in-place*. */
1769 case '*': /* Pointer to another type */
1770 type1
= read_type (pp
, objfile
);
1771 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
, objfile
));
1774 case '&': /* Reference to another type */
1775 type1
= read_type (pp
, objfile
);
1776 type
= make_reference_type (type1
, dbx_lookup_type (typenums
, objfile
));
1779 case 'f': /* Function returning another type */
1780 type1
= read_type (pp
, objfile
);
1781 type
= make_function_type (type1
, dbx_lookup_type (typenums
, objfile
));
1784 case 'g': /* Prototyped function. (Sun) */
1786 /* Unresolved questions:
1788 - According to Sun's ``STABS Interface Manual'', for 'f'
1789 and 'F' symbol descriptors, a `0' in the argument type list
1790 indicates a varargs function. But it doesn't say how 'g'
1791 type descriptors represent that info. Someone with access
1792 to Sun's toolchain should try it out.
1794 - According to the comment in define_symbol (search for
1795 `process_prototype_types:'), Sun emits integer arguments as
1796 types which ref themselves --- like `void' types. Do we
1797 have to deal with that here, too? Again, someone with
1798 access to Sun's toolchain should try it out and let us
1801 const char *type_start
= (*pp
) - 1;
1802 struct type
*return_type
= read_type (pp
, objfile
);
1803 struct type
*func_type
1804 = make_function_type (return_type
,
1805 dbx_lookup_type (typenums
, objfile
));
1808 struct type_list
*next
;
1812 while (**pp
&& **pp
!= '#')
1814 struct type
*arg_type
= read_type (pp
, objfile
);
1815 struct type_list
*new = alloca (sizeof (*new));
1816 new->type
= arg_type
;
1817 new->next
= arg_types
;
1825 complaint (&symfile_complaints
,
1826 _("Prototyped function type didn't "
1827 "end arguments with `#':\n%s"),
1831 /* If there is just one argument whose type is `void', then
1832 that's just an empty argument list. */
1834 && ! arg_types
->next
1835 && TYPE_CODE (arg_types
->type
) == TYPE_CODE_VOID
)
1838 TYPE_FIELDS (func_type
)
1839 = (struct field
*) TYPE_ALLOC (func_type
,
1840 num_args
* sizeof (struct field
));
1841 memset (TYPE_FIELDS (func_type
), 0, num_args
* sizeof (struct field
));
1844 struct type_list
*t
;
1846 /* We stuck each argument type onto the front of the list
1847 when we read it, so the list is reversed. Build the
1848 fields array right-to-left. */
1849 for (t
= arg_types
, i
= num_args
- 1; t
; t
= t
->next
, i
--)
1850 TYPE_FIELD_TYPE (func_type
, i
) = t
->type
;
1852 TYPE_NFIELDS (func_type
) = num_args
;
1853 TYPE_PROTOTYPED (func_type
) = 1;
1859 case 'k': /* Const qualifier on some type (Sun) */
1860 type
= read_type (pp
, objfile
);
1861 type
= make_cv_type (1, TYPE_VOLATILE (type
), type
,
1862 dbx_lookup_type (typenums
, objfile
));
1865 case 'B': /* Volatile qual on some type (Sun) */
1866 type
= read_type (pp
, objfile
);
1867 type
= make_cv_type (TYPE_CONST (type
), 1, type
,
1868 dbx_lookup_type (typenums
, objfile
));
1872 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
1873 { /* Member (class & variable) type */
1874 /* FIXME -- we should be doing smash_to_XXX types here. */
1876 struct type
*domain
= read_type (pp
, objfile
);
1877 struct type
*memtype
;
1880 /* Invalid member type data format. */
1881 return error_type (pp
, objfile
);
1884 memtype
= read_type (pp
, objfile
);
1885 type
= dbx_alloc_type (typenums
, objfile
);
1886 smash_to_memberptr_type (type
, domain
, memtype
);
1889 /* type attribute */
1893 /* Skip to the semicolon. */
1894 while (**pp
!= ';' && **pp
!= '\0')
1897 return error_type (pp
, objfile
);
1899 ++ * pp
; /* Skip the semicolon. */
1903 case 's': /* Size attribute */
1904 type_size
= atoi (attr
+ 1);
1909 case 'S': /* String attribute */
1910 /* FIXME: check to see if following type is array? */
1914 case 'V': /* Vector attribute */
1915 /* FIXME: check to see if following type is array? */
1920 /* Ignore unrecognized type attributes, so future compilers
1921 can invent new ones. */
1929 case '#': /* Method (class & fn) type */
1930 if ((*pp
)[0] == '#')
1932 /* We'll get the parameter types from the name. */
1933 struct type
*return_type
;
1936 return_type
= read_type (pp
, objfile
);
1937 if (*(*pp
)++ != ';')
1938 complaint (&symfile_complaints
,
1939 _("invalid (minimal) member type "
1940 "data format at symtab pos %d."),
1942 type
= allocate_stub_method (return_type
);
1943 if (typenums
[0] != -1)
1944 *dbx_lookup_type (typenums
, objfile
) = type
;
1948 struct type
*domain
= read_type (pp
, objfile
);
1949 struct type
*return_type
;
1954 /* Invalid member type data format. */
1955 return error_type (pp
, objfile
);
1959 return_type
= read_type (pp
, objfile
);
1960 args
= read_args (pp
, ';', objfile
, &nargs
, &varargs
);
1962 return error_type (pp
, objfile
);
1963 type
= dbx_alloc_type (typenums
, objfile
);
1964 smash_to_method_type (type
, domain
, return_type
, args
,
1969 case 'r': /* Range type */
1970 type
= read_range_type (pp
, typenums
, type_size
, objfile
);
1971 if (typenums
[0] != -1)
1972 *dbx_lookup_type (typenums
, objfile
) = type
;
1977 /* Sun ACC builtin int type */
1978 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1979 if (typenums
[0] != -1)
1980 *dbx_lookup_type (typenums
, objfile
) = type
;
1984 case 'R': /* Sun ACC builtin float type */
1985 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1986 if (typenums
[0] != -1)
1987 *dbx_lookup_type (typenums
, objfile
) = type
;
1990 case 'e': /* Enumeration type */
1991 type
= dbx_alloc_type (typenums
, objfile
);
1992 type
= read_enum_type (pp
, type
, objfile
);
1993 if (typenums
[0] != -1)
1994 *dbx_lookup_type (typenums
, objfile
) = type
;
1997 case 's': /* Struct type */
1998 case 'u': /* Union type */
2000 enum type_code type_code
= TYPE_CODE_UNDEF
;
2001 type
= dbx_alloc_type (typenums
, objfile
);
2002 switch (type_descriptor
)
2005 type_code
= TYPE_CODE_STRUCT
;
2008 type_code
= TYPE_CODE_UNION
;
2011 type
= read_struct_type (pp
, type
, type_code
, objfile
);
2015 case 'a': /* Array type */
2017 return error_type (pp
, objfile
);
2020 type
= dbx_alloc_type (typenums
, objfile
);
2021 type
= read_array_type (pp
, type
, objfile
);
2023 TYPE_CODE (type
) = TYPE_CODE_STRING
;
2025 make_vector_type (type
);
2028 case 'S': /* Set type */
2029 type1
= read_type (pp
, objfile
);
2030 type
= create_set_type ((struct type
*) NULL
, type1
);
2031 if (typenums
[0] != -1)
2032 *dbx_lookup_type (typenums
, objfile
) = type
;
2036 --*pp
; /* Go back to the symbol in error. */
2037 /* Particularly important if it was \0! */
2038 return error_type (pp
, objfile
);
2043 warning (_("GDB internal error, type is NULL in stabsread.c."));
2044 return error_type (pp
, objfile
);
2047 /* Size specified in a type attribute overrides any other size. */
2048 if (type_size
!= -1)
2049 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2054 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
2055 Return the proper type node for a given builtin type number. */
2057 static const struct objfile_data
*rs6000_builtin_type_data
;
2059 static struct type
*
2060 rs6000_builtin_type (int typenum
, struct objfile
*objfile
)
2062 struct type
**negative_types
= objfile_data (objfile
,
2063 rs6000_builtin_type_data
);
2065 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
2066 #define NUMBER_RECOGNIZED 34
2067 struct type
*rettype
= NULL
;
2069 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
2071 complaint (&symfile_complaints
, _("Unknown builtin type %d"), typenum
);
2072 return objfile_type (objfile
)->builtin_error
;
2075 if (!negative_types
)
2077 /* This includes an empty slot for type number -0. */
2078 negative_types
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
2079 NUMBER_RECOGNIZED
+ 1, struct type
*);
2080 set_objfile_data (objfile
, rs6000_builtin_type_data
, negative_types
);
2083 if (negative_types
[-typenum
] != NULL
)
2084 return negative_types
[-typenum
];
2086 #if TARGET_CHAR_BIT != 8
2087 #error This code wrong for TARGET_CHAR_BIT not 8
2088 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
2089 that if that ever becomes not true, the correct fix will be to
2090 make the size in the struct type to be in bits, not in units of
2097 /* The size of this and all the other types are fixed, defined
2098 by the debugging format. If there is a type called "int" which
2099 is other than 32 bits, then it should use a new negative type
2100 number (or avoid negative type numbers for that case).
2101 See stabs.texinfo. */
2102 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", objfile
);
2105 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", objfile
);
2108 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", objfile
);
2111 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", objfile
);
2114 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
2115 "unsigned char", objfile
);
2118 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", objfile
);
2121 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
2122 "unsigned short", objfile
);
2125 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2126 "unsigned int", objfile
);
2129 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2130 "unsigned", objfile
);
2133 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2134 "unsigned long", objfile
);
2137 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", objfile
);
2140 /* IEEE single precision (32 bit). */
2141 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", objfile
);
2144 /* IEEE double precision (64 bit). */
2145 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", objfile
);
2148 /* This is an IEEE double on the RS/6000, and different machines with
2149 different sizes for "long double" should use different negative
2150 type numbers. See stabs.texinfo. */
2151 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", objfile
);
2154 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", objfile
);
2157 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2158 "boolean", objfile
);
2161 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", objfile
);
2164 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", objfile
);
2167 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", objfile
);
2170 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
2171 "character", objfile
);
2174 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
2175 "logical*1", objfile
);
2178 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
2179 "logical*2", objfile
);
2182 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2183 "logical*4", objfile
);
2186 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2187 "logical", objfile
);
2190 /* Complex type consisting of two IEEE single precision values. */
2191 rettype
= init_type (TYPE_CODE_COMPLEX
, 8, 0, "complex", objfile
);
2192 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 4, 0, "float",
2196 /* Complex type consisting of two IEEE double precision values. */
2197 rettype
= init_type (TYPE_CODE_COMPLEX
, 16, 0, "double complex", NULL
);
2198 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 8, 0, "double",
2202 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", objfile
);
2205 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", objfile
);
2208 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", objfile
);
2211 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", objfile
);
2214 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", objfile
);
2217 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2218 "unsigned long long", objfile
);
2221 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2222 "logical*8", objfile
);
2225 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", objfile
);
2228 negative_types
[-typenum
] = rettype
;
2232 /* This page contains subroutines of read_type. */
2234 /* Wrapper around method_name_from_physname to flag a complaint
2235 if there is an error. */
2238 stabs_method_name_from_physname (const char *physname
)
2242 method_name
= method_name_from_physname (physname
);
2244 if (method_name
== NULL
)
2246 complaint (&symfile_complaints
,
2247 _("Method has bad physname %s\n"), physname
);
2254 /* Read member function stabs info for C++ classes. The form of each member
2257 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2259 An example with two member functions is:
2261 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2263 For the case of overloaded operators, the format is op$::*.funcs, where
2264 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2265 name (such as `+=') and `.' marks the end of the operator name.
2267 Returns 1 for success, 0 for failure. */
2270 read_member_functions (struct field_info
*fip
, char **pp
, struct type
*type
,
2271 struct objfile
*objfile
)
2278 struct next_fnfield
*next
;
2279 struct fn_field fn_field
;
2282 struct type
*look_ahead_type
;
2283 struct next_fnfieldlist
*new_fnlist
;
2284 struct next_fnfield
*new_sublist
;
2288 /* Process each list until we find something that is not a member function
2289 or find the end of the functions. */
2293 /* We should be positioned at the start of the function name.
2294 Scan forward to find the first ':' and if it is not the
2295 first of a "::" delimiter, then this is not a member function. */
2307 look_ahead_type
= NULL
;
2310 new_fnlist
= (struct next_fnfieldlist
*)
2311 xmalloc (sizeof (struct next_fnfieldlist
));
2312 make_cleanup (xfree
, new_fnlist
);
2313 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2315 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
2317 /* This is a completely wierd case. In order to stuff in the
2318 names that might contain colons (the usual name delimiter),
2319 Mike Tiemann defined a different name format which is
2320 signalled if the identifier is "op$". In that case, the
2321 format is "op$::XXXX." where XXXX is the name. This is
2322 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2323 /* This lets the user type "break operator+".
2324 We could just put in "+" as the name, but that wouldn't
2326 static char opname
[32] = "op$";
2327 char *o
= opname
+ 3;
2329 /* Skip past '::'. */
2332 STABS_CONTINUE (pp
, objfile
);
2338 main_fn_name
= savestring (opname
, o
- opname
);
2344 main_fn_name
= savestring (*pp
, p
- *pp
);
2345 /* Skip past '::'. */
2348 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
2353 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2354 make_cleanup (xfree
, new_sublist
);
2355 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2357 /* Check for and handle cretinous dbx symbol name continuation! */
2358 if (look_ahead_type
== NULL
)
2361 STABS_CONTINUE (pp
, objfile
);
2363 new_sublist
->fn_field
.type
= read_type (pp
, objfile
);
2366 /* Invalid symtab info for member function. */
2372 /* g++ version 1 kludge */
2373 new_sublist
->fn_field
.type
= look_ahead_type
;
2374 look_ahead_type
= NULL
;
2384 /* If this is just a stub, then we don't have the real name here. */
2386 if (TYPE_STUB (new_sublist
->fn_field
.type
))
2388 if (!TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
))
2389 TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
) = type
;
2390 new_sublist
->fn_field
.is_stub
= 1;
2392 new_sublist
->fn_field
.physname
= savestring (*pp
, p
- *pp
);
2395 /* Set this member function's visibility fields. */
2398 case VISIBILITY_PRIVATE
:
2399 new_sublist
->fn_field
.is_private
= 1;
2401 case VISIBILITY_PROTECTED
:
2402 new_sublist
->fn_field
.is_protected
= 1;
2406 STABS_CONTINUE (pp
, objfile
);
2409 case 'A': /* Normal functions. */
2410 new_sublist
->fn_field
.is_const
= 0;
2411 new_sublist
->fn_field
.is_volatile
= 0;
2414 case 'B': /* `const' member functions. */
2415 new_sublist
->fn_field
.is_const
= 1;
2416 new_sublist
->fn_field
.is_volatile
= 0;
2419 case 'C': /* `volatile' member function. */
2420 new_sublist
->fn_field
.is_const
= 0;
2421 new_sublist
->fn_field
.is_volatile
= 1;
2424 case 'D': /* `const volatile' member function. */
2425 new_sublist
->fn_field
.is_const
= 1;
2426 new_sublist
->fn_field
.is_volatile
= 1;
2429 case '*': /* File compiled with g++ version 1 --
2435 complaint (&symfile_complaints
,
2436 _("const/volatile indicator missing, got '%c'"),
2446 /* virtual member function, followed by index.
2447 The sign bit is set to distinguish pointers-to-methods
2448 from virtual function indicies. Since the array is
2449 in words, the quantity must be shifted left by 1
2450 on 16 bit machine, and by 2 on 32 bit machine, forcing
2451 the sign bit out, and usable as a valid index into
2452 the array. Remove the sign bit here. */
2453 new_sublist
->fn_field
.voffset
=
2454 (0x7fffffff & read_huge_number (pp
, ';', &nbits
, 0)) + 2;
2458 STABS_CONTINUE (pp
, objfile
);
2459 if (**pp
== ';' || **pp
== '\0')
2461 /* Must be g++ version 1. */
2462 new_sublist
->fn_field
.fcontext
= 0;
2466 /* Figure out from whence this virtual function came.
2467 It may belong to virtual function table of
2468 one of its baseclasses. */
2469 look_ahead_type
= read_type (pp
, objfile
);
2472 /* g++ version 1 overloaded methods. */
2476 new_sublist
->fn_field
.fcontext
= look_ahead_type
;
2485 look_ahead_type
= NULL
;
2491 /* static member function. */
2493 int slen
= strlen (main_fn_name
);
2495 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
2497 /* For static member functions, we can't tell if they
2498 are stubbed, as they are put out as functions, and not as
2500 GCC v2 emits the fully mangled name if
2501 dbxout.c:flag_minimal_debug is not set, so we have to
2502 detect a fully mangled physname here and set is_stub
2503 accordingly. Fully mangled physnames in v2 start with
2504 the member function name, followed by two underscores.
2505 GCC v3 currently always emits stubbed member functions,
2506 but with fully mangled physnames, which start with _Z. */
2507 if (!(strncmp (new_sublist
->fn_field
.physname
,
2508 main_fn_name
, slen
) == 0
2509 && new_sublist
->fn_field
.physname
[slen
] == '_'
2510 && new_sublist
->fn_field
.physname
[slen
+ 1] == '_'))
2512 new_sublist
->fn_field
.is_stub
= 1;
2519 complaint (&symfile_complaints
,
2520 _("member function type missing, got '%c'"),
2522 /* Fall through into normal member function. */
2525 /* normal member function. */
2526 new_sublist
->fn_field
.voffset
= 0;
2527 new_sublist
->fn_field
.fcontext
= 0;
2531 new_sublist
->next
= sublist
;
2532 sublist
= new_sublist
;
2534 STABS_CONTINUE (pp
, objfile
);
2536 while (**pp
!= ';' && **pp
!= '\0');
2539 STABS_CONTINUE (pp
, objfile
);
2541 /* Skip GCC 3.X member functions which are duplicates of the callable
2542 constructor/destructor. */
2543 if (strcmp_iw (main_fn_name
, "__base_ctor ") == 0
2544 || strcmp_iw (main_fn_name
, "__base_dtor ") == 0
2545 || strcmp (main_fn_name
, "__deleting_dtor") == 0)
2547 xfree (main_fn_name
);
2552 int has_destructor
= 0, has_other
= 0;
2554 struct next_fnfield
*tmp_sublist
;
2556 /* Various versions of GCC emit various mostly-useless
2557 strings in the name field for special member functions.
2559 For stub methods, we need to defer correcting the name
2560 until we are ready to unstub the method, because the current
2561 name string is used by gdb_mangle_name. The only stub methods
2562 of concern here are GNU v2 operators; other methods have their
2563 names correct (see caveat below).
2565 For non-stub methods, in GNU v3, we have a complete physname.
2566 Therefore we can safely correct the name now. This primarily
2567 affects constructors and destructors, whose name will be
2568 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2569 operators will also have incorrect names; for instance,
2570 "operator int" will be named "operator i" (i.e. the type is
2573 For non-stub methods in GNU v2, we have no easy way to
2574 know if we have a complete physname or not. For most
2575 methods the result depends on the platform (if CPLUS_MARKER
2576 can be `$' or `.', it will use minimal debug information, or
2577 otherwise the full physname will be included).
2579 Rather than dealing with this, we take a different approach.
2580 For v3 mangled names, we can use the full physname; for v2,
2581 we use cplus_demangle_opname (which is actually v2 specific),
2582 because the only interesting names are all operators - once again
2583 barring the caveat below. Skip this process if any method in the
2584 group is a stub, to prevent our fouling up the workings of
2587 The caveat: GCC 2.95.x (and earlier?) put constructors and
2588 destructors in the same method group. We need to split this
2589 into two groups, because they should have different names.
2590 So for each method group we check whether it contains both
2591 routines whose physname appears to be a destructor (the physnames
2592 for and destructors are always provided, due to quirks in v2
2593 mangling) and routines whose physname does not appear to be a
2594 destructor. If so then we break up the list into two halves.
2595 Even if the constructors and destructors aren't in the same group
2596 the destructor will still lack the leading tilde, so that also
2599 So, to summarize what we expect and handle here:
2601 Given Given Real Real Action
2602 method name physname physname method name
2604 __opi [none] __opi__3Foo operator int opname
2606 Foo _._3Foo _._3Foo ~Foo separate and
2608 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2609 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2612 tmp_sublist
= sublist
;
2613 while (tmp_sublist
!= NULL
)
2615 if (tmp_sublist
->fn_field
.is_stub
)
2617 if (tmp_sublist
->fn_field
.physname
[0] == '_'
2618 && tmp_sublist
->fn_field
.physname
[1] == 'Z')
2621 if (is_destructor_name (tmp_sublist
->fn_field
.physname
))
2626 tmp_sublist
= tmp_sublist
->next
;
2629 if (has_destructor
&& has_other
)
2631 struct next_fnfieldlist
*destr_fnlist
;
2632 struct next_fnfield
*last_sublist
;
2634 /* Create a new fn_fieldlist for the destructors. */
2636 destr_fnlist
= (struct next_fnfieldlist
*)
2637 xmalloc (sizeof (struct next_fnfieldlist
));
2638 make_cleanup (xfree
, destr_fnlist
);
2639 memset (destr_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2640 destr_fnlist
->fn_fieldlist
.name
2641 = obconcat (&objfile
->objfile_obstack
, "~",
2642 new_fnlist
->fn_fieldlist
.name
, (char *) NULL
);
2644 destr_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2645 obstack_alloc (&objfile
->objfile_obstack
,
2646 sizeof (struct fn_field
) * has_destructor
);
2647 memset (destr_fnlist
->fn_fieldlist
.fn_fields
, 0,
2648 sizeof (struct fn_field
) * has_destructor
);
2649 tmp_sublist
= sublist
;
2650 last_sublist
= NULL
;
2652 while (tmp_sublist
!= NULL
)
2654 if (!is_destructor_name (tmp_sublist
->fn_field
.physname
))
2656 tmp_sublist
= tmp_sublist
->next
;
2660 destr_fnlist
->fn_fieldlist
.fn_fields
[i
++]
2661 = tmp_sublist
->fn_field
;
2663 last_sublist
->next
= tmp_sublist
->next
;
2665 sublist
= tmp_sublist
->next
;
2666 last_sublist
= tmp_sublist
;
2667 tmp_sublist
= tmp_sublist
->next
;
2670 destr_fnlist
->fn_fieldlist
.length
= has_destructor
;
2671 destr_fnlist
->next
= fip
->fnlist
;
2672 fip
->fnlist
= destr_fnlist
;
2674 length
-= has_destructor
;
2678 /* v3 mangling prevents the use of abbreviated physnames,
2679 so we can do this here. There are stubbed methods in v3
2681 - in -gstabs instead of -gstabs+
2682 - or for static methods, which are output as a function type
2683 instead of a method type. */
2684 char *new_method_name
=
2685 stabs_method_name_from_physname (sublist
->fn_field
.physname
);
2687 if (new_method_name
!= NULL
2688 && strcmp (new_method_name
,
2689 new_fnlist
->fn_fieldlist
.name
) != 0)
2691 new_fnlist
->fn_fieldlist
.name
= new_method_name
;
2692 xfree (main_fn_name
);
2695 xfree (new_method_name
);
2697 else if (has_destructor
&& new_fnlist
->fn_fieldlist
.name
[0] != '~')
2699 new_fnlist
->fn_fieldlist
.name
=
2700 obconcat (&objfile
->objfile_obstack
,
2701 "~", main_fn_name
, (char *)NULL
);
2702 xfree (main_fn_name
);
2706 char dem_opname
[256];
2709 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2710 dem_opname
, DMGL_ANSI
);
2712 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2715 new_fnlist
->fn_fieldlist
.name
2716 = obstack_copy0 (&objfile
->objfile_obstack
,
2717 dem_opname
, strlen (dem_opname
));
2718 xfree (main_fn_name
);
2721 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2722 obstack_alloc (&objfile
->objfile_obstack
,
2723 sizeof (struct fn_field
) * length
);
2724 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
2725 sizeof (struct fn_field
) * length
);
2726 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
2728 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
2731 new_fnlist
->fn_fieldlist
.length
= length
;
2732 new_fnlist
->next
= fip
->fnlist
;
2733 fip
->fnlist
= new_fnlist
;
2740 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2741 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2742 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2743 memset (TYPE_FN_FIELDLISTS (type
), 0,
2744 sizeof (struct fn_fieldlist
) * nfn_fields
);
2745 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2751 /* Special GNU C++ name.
2753 Returns 1 for success, 0 for failure. "failure" means that we can't
2754 keep parsing and it's time for error_type(). */
2757 read_cpp_abbrev (struct field_info
*fip
, char **pp
, struct type
*type
,
2758 struct objfile
*objfile
)
2763 struct type
*context
;
2773 /* At this point, *pp points to something like "22:23=*22...",
2774 where the type number before the ':' is the "context" and
2775 everything after is a regular type definition. Lookup the
2776 type, find it's name, and construct the field name. */
2778 context
= read_type (pp
, objfile
);
2782 case 'f': /* $vf -- a virtual function table pointer */
2783 name
= type_name_no_tag (context
);
2788 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
,
2789 vptr_name
, name
, (char *) NULL
);
2792 case 'b': /* $vb -- a virtual bsomethingorother */
2793 name
= type_name_no_tag (context
);
2796 complaint (&symfile_complaints
,
2797 _("C++ abbreviated type name "
2798 "unknown at symtab pos %d"),
2802 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
, vb_name
,
2803 name
, (char *) NULL
);
2807 invalid_cpp_abbrev_complaint (*pp
);
2808 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
,
2809 "INVALID_CPLUSPLUS_ABBREV",
2814 /* At this point, *pp points to the ':'. Skip it and read the
2820 invalid_cpp_abbrev_complaint (*pp
);
2823 fip
->list
->field
.type
= read_type (pp
, objfile
);
2825 (*pp
)++; /* Skip the comma. */
2832 SET_FIELD_BITPOS (fip
->list
->field
,
2833 read_huge_number (pp
, ';', &nbits
, 0));
2837 /* This field is unpacked. */
2838 FIELD_BITSIZE (fip
->list
->field
) = 0;
2839 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2843 invalid_cpp_abbrev_complaint (*pp
);
2844 /* We have no idea what syntax an unrecognized abbrev would have, so
2845 better return 0. If we returned 1, we would need to at least advance
2846 *pp to avoid an infinite loop. */
2853 read_one_struct_field (struct field_info
*fip
, char **pp
, char *p
,
2854 struct type
*type
, struct objfile
*objfile
)
2856 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2858 fip
->list
->field
.name
=
2859 obstack_copy0 (&objfile
->objfile_obstack
, *pp
, p
- *pp
);
2862 /* This means we have a visibility for a field coming. */
2866 fip
->list
->visibility
= *(*pp
)++;
2870 /* normal dbx-style format, no explicit visibility */
2871 fip
->list
->visibility
= VISIBILITY_PUBLIC
;
2874 fip
->list
->field
.type
= read_type (pp
, objfile
);
2879 /* Possible future hook for nested types. */
2882 fip
->list
->field
.bitpos
= (long) -2; /* nested type */
2892 /* Static class member. */
2893 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (*pp
, p
- *pp
));
2897 else if (**pp
!= ',')
2899 /* Bad structure-type format. */
2900 stabs_general_complaint ("bad structure-type format");
2904 (*pp
)++; /* Skip the comma. */
2909 SET_FIELD_BITPOS (fip
->list
->field
,
2910 read_huge_number (pp
, ',', &nbits
, 0));
2913 stabs_general_complaint ("bad structure-type format");
2916 FIELD_BITSIZE (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
, 0);
2919 stabs_general_complaint ("bad structure-type format");
2924 if (FIELD_BITPOS (fip
->list
->field
) == 0
2925 && FIELD_BITSIZE (fip
->list
->field
) == 0)
2927 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2928 it is a field which has been optimized out. The correct stab for
2929 this case is to use VISIBILITY_IGNORE, but that is a recent
2930 invention. (2) It is a 0-size array. For example
2931 union { int num; char str[0]; } foo. Printing _("<no value>" for
2932 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2933 will continue to work, and a 0-size array as a whole doesn't
2934 have any contents to print.
2936 I suspect this probably could also happen with gcc -gstabs (not
2937 -gstabs+) for static fields, and perhaps other C++ extensions.
2938 Hopefully few people use -gstabs with gdb, since it is intended
2939 for dbx compatibility. */
2941 /* Ignore this field. */
2942 fip
->list
->visibility
= VISIBILITY_IGNORE
;
2946 /* Detect an unpacked field and mark it as such.
2947 dbx gives a bit size for all fields.
2948 Note that forward refs cannot be packed,
2949 and treat enums as if they had the width of ints. */
2951 struct type
*field_type
= check_typedef (FIELD_TYPE (fip
->list
->field
));
2953 if (TYPE_CODE (field_type
) != TYPE_CODE_INT
2954 && TYPE_CODE (field_type
) != TYPE_CODE_RANGE
2955 && TYPE_CODE (field_type
) != TYPE_CODE_BOOL
2956 && TYPE_CODE (field_type
) != TYPE_CODE_ENUM
)
2958 FIELD_BITSIZE (fip
->list
->field
) = 0;
2960 if ((FIELD_BITSIZE (fip
->list
->field
)
2961 == TARGET_CHAR_BIT
* TYPE_LENGTH (field_type
)
2962 || (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
2963 && FIELD_BITSIZE (fip
->list
->field
)
2964 == gdbarch_int_bit (gdbarch
))
2967 FIELD_BITPOS (fip
->list
->field
) % 8 == 0)
2969 FIELD_BITSIZE (fip
->list
->field
) = 0;
2975 /* Read struct or class data fields. They have the form:
2977 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2979 At the end, we see a semicolon instead of a field.
2981 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2984 The optional VISIBILITY is one of:
2986 '/0' (VISIBILITY_PRIVATE)
2987 '/1' (VISIBILITY_PROTECTED)
2988 '/2' (VISIBILITY_PUBLIC)
2989 '/9' (VISIBILITY_IGNORE)
2991 or nothing, for C style fields with public visibility.
2993 Returns 1 for success, 0 for failure. */
2996 read_struct_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
2997 struct objfile
*objfile
)
3000 struct nextfield
*new;
3002 /* We better set p right now, in case there are no fields at all... */
3006 /* Read each data member type until we find the terminating ';' at the end of
3007 the data member list, or break for some other reason such as finding the
3008 start of the member function list. */
3009 /* Stab string for structure/union does not end with two ';' in
3010 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
3012 while (**pp
!= ';' && **pp
!= '\0')
3014 STABS_CONTINUE (pp
, objfile
);
3015 /* Get space to record the next field's data. */
3016 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3017 make_cleanup (xfree
, new);
3018 memset (new, 0, sizeof (struct nextfield
));
3019 new->next
= fip
->list
;
3022 /* Get the field name. */
3025 /* If is starts with CPLUS_MARKER it is a special abbreviation,
3026 unless the CPLUS_MARKER is followed by an underscore, in
3027 which case it is just the name of an anonymous type, which we
3028 should handle like any other type name. */
3030 if (is_cplus_marker (p
[0]) && p
[1] != '_')
3032 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
3037 /* Look for the ':' that separates the field name from the field
3038 values. Data members are delimited by a single ':', while member
3039 functions are delimited by a pair of ':'s. When we hit the member
3040 functions (if any), terminate scan loop and return. */
3042 while (*p
!= ':' && *p
!= '\0')
3049 /* Check to see if we have hit the member functions yet. */
3054 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
3056 if (p
[0] == ':' && p
[1] == ':')
3058 /* (the deleted) chill the list of fields: the last entry (at
3059 the head) is a partially constructed entry which we now
3061 fip
->list
= fip
->list
->next
;
3066 /* The stabs for C++ derived classes contain baseclass information which
3067 is marked by a '!' character after the total size. This function is
3068 called when we encounter the baseclass marker, and slurps up all the
3069 baseclass information.
3071 Immediately following the '!' marker is the number of base classes that
3072 the class is derived from, followed by information for each base class.
3073 For each base class, there are two visibility specifiers, a bit offset
3074 to the base class information within the derived class, a reference to
3075 the type for the base class, and a terminating semicolon.
3077 A typical example, with two base classes, would be "!2,020,19;0264,21;".
3079 Baseclass information marker __________________|| | | | | | |
3080 Number of baseclasses __________________________| | | | | | |
3081 Visibility specifiers (2) ________________________| | | | | |
3082 Offset in bits from start of class _________________| | | | |
3083 Type number for base class ___________________________| | | |
3084 Visibility specifiers (2) _______________________________| | |
3085 Offset in bits from start of class ________________________| |
3086 Type number of base class ____________________________________|
3088 Return 1 for success, 0 for (error-type-inducing) failure. */
3094 read_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
3095 struct objfile
*objfile
)
3098 struct nextfield
*new;
3106 /* Skip the '!' baseclass information marker. */
3110 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3114 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
, 0);
3120 /* Some stupid compilers have trouble with the following, so break
3121 it up into simpler expressions. */
3122 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
3123 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
3126 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
3129 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
3130 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
3134 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
3136 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
3138 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3139 make_cleanup (xfree
, new);
3140 memset (new, 0, sizeof (struct nextfield
));
3141 new->next
= fip
->list
;
3143 FIELD_BITSIZE (new->field
) = 0; /* This should be an unpacked
3146 STABS_CONTINUE (pp
, objfile
);
3150 /* Nothing to do. */
3153 SET_TYPE_FIELD_VIRTUAL (type
, i
);
3156 /* Unknown character. Complain and treat it as non-virtual. */
3158 complaint (&symfile_complaints
,
3159 _("Unknown virtual character `%c' for baseclass"),
3165 new->visibility
= *(*pp
)++;
3166 switch (new->visibility
)
3168 case VISIBILITY_PRIVATE
:
3169 case VISIBILITY_PROTECTED
:
3170 case VISIBILITY_PUBLIC
:
3173 /* Bad visibility format. Complain and treat it as
3176 complaint (&symfile_complaints
,
3177 _("Unknown visibility `%c' for baseclass"),
3179 new->visibility
= VISIBILITY_PUBLIC
;
3186 /* The remaining value is the bit offset of the portion of the object
3187 corresponding to this baseclass. Always zero in the absence of
3188 multiple inheritance. */
3190 SET_FIELD_BITPOS (new->field
, read_huge_number (pp
, ',', &nbits
, 0));
3195 /* The last piece of baseclass information is the type of the
3196 base class. Read it, and remember it's type name as this
3199 new->field
.type
= read_type (pp
, objfile
);
3200 new->field
.name
= type_name_no_tag (new->field
.type
);
3202 /* Skip trailing ';' and bump count of number of fields seen. */
3211 /* The tail end of stabs for C++ classes that contain a virtual function
3212 pointer contains a tilde, a %, and a type number.
3213 The type number refers to the base class (possibly this class itself) which
3214 contains the vtable pointer for the current class.
3216 This function is called when we have parsed all the method declarations,
3217 so we can look for the vptr base class info. */
3220 read_tilde_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3221 struct objfile
*objfile
)
3225 STABS_CONTINUE (pp
, objfile
);
3227 /* If we are positioned at a ';', then skip it. */
3237 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
3239 /* Obsolete flags that used to indicate the presence
3240 of constructors and/or destructors. */
3244 /* Read either a '%' or the final ';'. */
3245 if (*(*pp
)++ == '%')
3247 /* The next number is the type number of the base class
3248 (possibly our own class) which supplies the vtable for
3249 this class. Parse it out, and search that class to find
3250 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3251 and TYPE_VPTR_FIELDNO. */
3256 t
= read_type (pp
, objfile
);
3258 while (*p
!= '\0' && *p
!= ';')
3264 /* Premature end of symbol. */
3268 TYPE_VPTR_BASETYPE (type
) = t
;
3269 if (type
== t
) /* Our own class provides vtbl ptr. */
3271 for (i
= TYPE_NFIELDS (t
) - 1;
3272 i
>= TYPE_N_BASECLASSES (t
);
3275 const char *name
= TYPE_FIELD_NAME (t
, i
);
3277 if (!strncmp (name
, vptr_name
, sizeof (vptr_name
) - 2)
3278 && is_cplus_marker (name
[sizeof (vptr_name
) - 2]))
3280 TYPE_VPTR_FIELDNO (type
) = i
;
3284 /* Virtual function table field not found. */
3285 complaint (&symfile_complaints
,
3286 _("virtual function table pointer "
3287 "not found when defining class `%s'"),
3293 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
3304 attach_fn_fields_to_type (struct field_info
*fip
, struct type
*type
)
3308 for (n
= TYPE_NFN_FIELDS (type
);
3309 fip
->fnlist
!= NULL
;
3310 fip
->fnlist
= fip
->fnlist
->next
)
3312 --n
; /* Circumvent Sun3 compiler bug. */
3313 TYPE_FN_FIELDLISTS (type
)[n
] = fip
->fnlist
->fn_fieldlist
;
3318 /* Create the vector of fields, and record how big it is.
3319 We need this info to record proper virtual function table information
3320 for this class's virtual functions. */
3323 attach_fields_to_type (struct field_info
*fip
, struct type
*type
,
3324 struct objfile
*objfile
)
3327 int non_public_fields
= 0;
3328 struct nextfield
*scan
;
3330 /* Count up the number of fields that we have, as well as taking note of
3331 whether or not there are any non-public fields, which requires us to
3332 allocate and build the private_field_bits and protected_field_bits
3335 for (scan
= fip
->list
; scan
!= NULL
; scan
= scan
->next
)
3338 if (scan
->visibility
!= VISIBILITY_PUBLIC
)
3340 non_public_fields
++;
3344 /* Now we know how many fields there are, and whether or not there are any
3345 non-public fields. Record the field count, allocate space for the
3346 array of fields, and create blank visibility bitfields if necessary. */
3348 TYPE_NFIELDS (type
) = nfields
;
3349 TYPE_FIELDS (type
) = (struct field
*)
3350 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
3351 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
3353 if (non_public_fields
)
3355 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3357 TYPE_FIELD_PRIVATE_BITS (type
) =
3358 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3359 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
3361 TYPE_FIELD_PROTECTED_BITS (type
) =
3362 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3363 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
3365 TYPE_FIELD_IGNORE_BITS (type
) =
3366 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3367 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
3370 /* Copy the saved-up fields into the field vector. Start from the
3371 head of the list, adding to the tail of the field array, so that
3372 they end up in the same order in the array in which they were
3373 added to the list. */
3375 while (nfields
-- > 0)
3377 TYPE_FIELD (type
, nfields
) = fip
->list
->field
;
3378 switch (fip
->list
->visibility
)
3380 case VISIBILITY_PRIVATE
:
3381 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
3384 case VISIBILITY_PROTECTED
:
3385 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
3388 case VISIBILITY_IGNORE
:
3389 SET_TYPE_FIELD_IGNORE (type
, nfields
);
3392 case VISIBILITY_PUBLIC
:
3396 /* Unknown visibility. Complain and treat it as public. */
3398 complaint (&symfile_complaints
,
3399 _("Unknown visibility `%c' for field"),
3400 fip
->list
->visibility
);
3404 fip
->list
= fip
->list
->next
;
3410 /* Complain that the compiler has emitted more than one definition for the
3411 structure type TYPE. */
3413 complain_about_struct_wipeout (struct type
*type
)
3415 const char *name
= "";
3416 const char *kind
= "";
3418 if (TYPE_TAG_NAME (type
))
3420 name
= TYPE_TAG_NAME (type
);
3421 switch (TYPE_CODE (type
))
3423 case TYPE_CODE_STRUCT
: kind
= "struct "; break;
3424 case TYPE_CODE_UNION
: kind
= "union "; break;
3425 case TYPE_CODE_ENUM
: kind
= "enum "; break;
3429 else if (TYPE_NAME (type
))
3431 name
= TYPE_NAME (type
);
3440 complaint (&symfile_complaints
,
3441 _("struct/union type gets multiply defined: %s%s"), kind
, name
);
3444 /* Set the length for all variants of a same main_type, which are
3445 connected in the closed chain.
3447 This is something that needs to be done when a type is defined *after*
3448 some cross references to this type have already been read. Consider
3449 for instance the following scenario where we have the following two
3452 .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24
3453 .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]"
3455 A stubbed version of type dummy is created while processing the first
3456 stabs entry. The length of that type is initially set to zero, since
3457 it is unknown at this point. Also, a "constant" variation of type
3458 "dummy" is created as well (this is the "(0,22)=k(0,23)" section of
3461 The second stabs entry allows us to replace the stubbed definition
3462 with the real definition. However, we still need to adjust the length
3463 of the "constant" variation of that type, as its length was left
3464 untouched during the main type replacement... */
3467 set_length_in_type_chain (struct type
*type
)
3469 struct type
*ntype
= TYPE_CHAIN (type
);
3471 while (ntype
!= type
)
3473 if (TYPE_LENGTH(ntype
) == 0)
3474 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
3476 complain_about_struct_wipeout (ntype
);
3477 ntype
= TYPE_CHAIN (ntype
);
3481 /* Read the description of a structure (or union type) and return an object
3482 describing the type.
3484 PP points to a character pointer that points to the next unconsumed token
3485 in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3486 *PP will point to "4a:1,0,32;;".
3488 TYPE points to an incomplete type that needs to be filled in.
3490 OBJFILE points to the current objfile from which the stabs information is
3491 being read. (Note that it is redundant in that TYPE also contains a pointer
3492 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3495 static struct type
*
3496 read_struct_type (char **pp
, struct type
*type
, enum type_code type_code
,
3497 struct objfile
*objfile
)
3499 struct cleanup
*back_to
;
3500 struct field_info fi
;
3505 /* When describing struct/union/class types in stabs, G++ always drops
3506 all qualifications from the name. So if you've got:
3507 struct A { ... struct B { ... }; ... };
3508 then G++ will emit stabs for `struct A::B' that call it simply
3509 `struct B'. Obviously, if you've got a real top-level definition for
3510 `struct B', or other nested definitions, this is going to cause
3513 Obviously, GDB can't fix this by itself, but it can at least avoid
3514 scribbling on existing structure type objects when new definitions
3516 if (! (TYPE_CODE (type
) == TYPE_CODE_UNDEF
3517 || TYPE_STUB (type
)))
3519 complain_about_struct_wipeout (type
);
3521 /* It's probably best to return the type unchanged. */
3525 back_to
= make_cleanup (null_cleanup
, 0);
3527 INIT_CPLUS_SPECIFIC (type
);
3528 TYPE_CODE (type
) = type_code
;
3529 TYPE_STUB (type
) = 0;
3531 /* First comes the total size in bytes. */
3536 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
, 0);
3538 return error_type (pp
, objfile
);
3539 set_length_in_type_chain (type
);
3542 /* Now read the baseclasses, if any, read the regular C struct or C++
3543 class member fields, attach the fields to the type, read the C++
3544 member functions, attach them to the type, and then read any tilde
3545 field (baseclass specifier for the class holding the main vtable). */
3547 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
3548 || !read_struct_fields (&fi
, pp
, type
, objfile
)
3549 || !attach_fields_to_type (&fi
, type
, objfile
)
3550 || !read_member_functions (&fi
, pp
, type
, objfile
)
3551 || !attach_fn_fields_to_type (&fi
, type
)
3552 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
3554 type
= error_type (pp
, objfile
);
3557 do_cleanups (back_to
);
3561 /* Read a definition of an array type,
3562 and create and return a suitable type object.
3563 Also creates a range type which represents the bounds of that
3566 static struct type
*
3567 read_array_type (char **pp
, struct type
*type
,
3568 struct objfile
*objfile
)
3570 struct type
*index_type
, *element_type
, *range_type
;
3575 /* Format of an array type:
3576 "ar<index type>;lower;upper;<array_contents_type>".
3577 OS9000: "arlower,upper;<array_contents_type>".
3579 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3580 for these, produce a type like float[][]. */
3583 index_type
= read_type (pp
, objfile
);
3585 /* Improper format of array type decl. */
3586 return error_type (pp
, objfile
);
3590 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3595 lower
= read_huge_number (pp
, ';', &nbits
, 0);
3598 return error_type (pp
, objfile
);
3600 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3605 upper
= read_huge_number (pp
, ';', &nbits
, 0);
3607 return error_type (pp
, objfile
);
3609 element_type
= read_type (pp
, objfile
);
3618 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3619 type
= create_array_type (type
, element_type
, range_type
);
3625 /* Read a definition of an enumeration type,
3626 and create and return a suitable type object.
3627 Also defines the symbols that represent the values of the type. */
3629 static struct type
*
3630 read_enum_type (char **pp
, struct type
*type
,
3631 struct objfile
*objfile
)
3633 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3639 struct pending
**symlist
;
3640 struct pending
*osyms
, *syms
;
3643 int unsigned_enum
= 1;
3646 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3647 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3648 to do? For now, force all enum values to file scope. */
3649 if (within_function
)
3650 symlist
= &local_symbols
;
3653 symlist
= &file_symbols
;
3655 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3657 /* The aix4 compiler emits an extra field before the enum members;
3658 my guess is it's a type of some sort. Just ignore it. */
3661 /* Skip over the type. */
3665 /* Skip over the colon. */
3669 /* Read the value-names and their values.
3670 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3671 A semicolon or comma instead of a NAME means the end. */
3672 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3674 STABS_CONTINUE (pp
, objfile
);
3678 name
= obstack_copy0 (&objfile
->objfile_obstack
, *pp
, p
- *pp
);
3680 n
= read_huge_number (pp
, ',', &nbits
, 0);
3682 return error_type (pp
, objfile
);
3684 sym
= (struct symbol
*)
3685 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
3686 memset (sym
, 0, sizeof (struct symbol
));
3687 SYMBOL_SET_LINKAGE_NAME (sym
, name
);
3688 SYMBOL_SET_LANGUAGE (sym
, current_subfile
->language
);
3689 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
3690 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
3691 SYMBOL_VALUE (sym
) = n
;
3694 add_symbol_to_list (sym
, symlist
);
3699 (*pp
)++; /* Skip the semicolon. */
3701 /* Now fill in the fields of the type-structure. */
3703 TYPE_LENGTH (type
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
3704 set_length_in_type_chain (type
);
3705 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3706 TYPE_STUB (type
) = 0;
3708 TYPE_UNSIGNED (type
) = 1;
3709 TYPE_NFIELDS (type
) = nsyms
;
3710 TYPE_FIELDS (type
) = (struct field
*)
3711 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3712 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3714 /* Find the symbols for the values and put them into the type.
3715 The symbols can be found in the symlist that we put them on
3716 to cause them to be defined. osyms contains the old value
3717 of that symlist; everything up to there was defined by us. */
3718 /* Note that we preserve the order of the enum constants, so
3719 that in something like "enum {FOO, LAST_THING=FOO}" we print
3720 FOO, not LAST_THING. */
3722 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3724 int last
= syms
== osyms
? o_nsyms
: 0;
3725 int j
= syms
->nsyms
;
3727 for (; --j
>= last
; --n
)
3729 struct symbol
*xsym
= syms
->symbol
[j
];
3731 SYMBOL_TYPE (xsym
) = type
;
3732 TYPE_FIELD_NAME (type
, n
) = SYMBOL_LINKAGE_NAME (xsym
);
3733 SET_FIELD_ENUMVAL (TYPE_FIELD (type
, n
), SYMBOL_VALUE (xsym
));
3734 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3743 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3744 typedefs in every file (for int, long, etc):
3746 type = b <signed> <width> <format type>; <offset>; <nbits>
3748 optional format type = c or b for char or boolean.
3749 offset = offset from high order bit to start bit of type.
3750 width is # bytes in object of this type, nbits is # bits in type.
3752 The width/offset stuff appears to be for small objects stored in
3753 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3756 static struct type
*
3757 read_sun_builtin_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3762 enum type_code code
= TYPE_CODE_INT
;
3773 return error_type (pp
, objfile
);
3777 /* For some odd reason, all forms of char put a c here. This is strange
3778 because no other type has this honor. We can safely ignore this because
3779 we actually determine 'char'acterness by the number of bits specified in
3781 Boolean forms, e.g Fortran logical*X, put a b here. */
3785 else if (**pp
== 'b')
3787 code
= TYPE_CODE_BOOL
;
3791 /* The first number appears to be the number of bytes occupied
3792 by this type, except that unsigned short is 4 instead of 2.
3793 Since this information is redundant with the third number,
3794 we will ignore it. */
3795 read_huge_number (pp
, ';', &nbits
, 0);
3797 return error_type (pp
, objfile
);
3799 /* The second number is always 0, so ignore it too. */
3800 read_huge_number (pp
, ';', &nbits
, 0);
3802 return error_type (pp
, objfile
);
3804 /* The third number is the number of bits for this type. */
3805 type_bits
= read_huge_number (pp
, 0, &nbits
, 0);
3807 return error_type (pp
, objfile
);
3808 /* The type *should* end with a semicolon. If it are embedded
3809 in a larger type the semicolon may be the only way to know where
3810 the type ends. If this type is at the end of the stabstring we
3811 can deal with the omitted semicolon (but we don't have to like
3812 it). Don't bother to complain(), Sun's compiler omits the semicolon
3818 return init_type (TYPE_CODE_VOID
, 1,
3819 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3822 return init_type (code
,
3823 type_bits
/ TARGET_CHAR_BIT
,
3824 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3828 static struct type
*
3829 read_sun_floating_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3834 struct type
*rettype
;
3836 /* The first number has more details about the type, for example
3838 details
= read_huge_number (pp
, ';', &nbits
, 0);
3840 return error_type (pp
, objfile
);
3842 /* The second number is the number of bytes occupied by this type. */
3843 nbytes
= read_huge_number (pp
, ';', &nbits
, 0);
3845 return error_type (pp
, objfile
);
3847 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3848 || details
== NF_COMPLEX32
)
3850 rettype
= init_type (TYPE_CODE_COMPLEX
, nbytes
, 0, NULL
, objfile
);
3851 TYPE_TARGET_TYPE (rettype
)
3852 = init_type (TYPE_CODE_FLT
, nbytes
/ 2, 0, NULL
, objfile
);
3856 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3859 /* Read a number from the string pointed to by *PP.
3860 The value of *PP is advanced over the number.
3861 If END is nonzero, the character that ends the
3862 number must match END, or an error happens;
3863 and that character is skipped if it does match.
3864 If END is zero, *PP is left pointing to that character.
3866 If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if
3867 the number is represented in an octal representation, assume that
3868 it is represented in a 2's complement representation with a size of
3869 TWOS_COMPLEMENT_BITS.
3871 If the number fits in a long, set *BITS to 0 and return the value.
3872 If not, set *BITS to be the number of bits in the number and return 0.
3874 If encounter garbage, set *BITS to -1 and return 0. */
3877 read_huge_number (char **pp
, int end
, int *bits
, int twos_complement_bits
)
3888 int twos_complement_representation
= 0;
3896 /* Leading zero means octal. GCC uses this to output values larger
3897 than an int (because that would be hard in decimal). */
3904 /* Skip extra zeros. */
3908 if (sign
> 0 && radix
== 8 && twos_complement_bits
> 0)
3910 /* Octal, possibly signed. Check if we have enough chars for a
3916 while ((c
= *p1
) >= '0' && c
< '8')
3920 if (len
> twos_complement_bits
/ 3
3921 || (twos_complement_bits
% 3 == 0
3922 && len
== twos_complement_bits
/ 3))
3924 /* Ok, we have enough characters for a signed value, check
3925 for signness by testing if the sign bit is set. */
3926 sign_bit
= (twos_complement_bits
% 3 + 2) % 3;
3928 if (c
& (1 << sign_bit
))
3930 /* Definitely signed. */
3931 twos_complement_representation
= 1;
3937 upper_limit
= LONG_MAX
/ radix
;
3939 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3941 if (n
<= upper_limit
)
3943 if (twos_complement_representation
)
3945 /* Octal, signed, twos complement representation. In
3946 this case, n is the corresponding absolute value. */
3949 long sn
= c
- '0' - ((2 * (c
- '0')) | (2 << sign_bit
));
3961 /* unsigned representation */
3963 n
+= c
- '0'; /* FIXME this overflows anyway. */
3969 /* This depends on large values being output in octal, which is
3976 /* Ignore leading zeroes. */
3980 else if (c
== '2' || c
== '3')
4001 if (radix
== 8 && twos_complement_bits
> 0 && nbits
> twos_complement_bits
)
4003 /* We were supposed to parse a number with maximum
4004 TWOS_COMPLEMENT_BITS bits, but something went wrong. */
4015 /* Large decimal constants are an error (because it is hard to
4016 count how many bits are in them). */
4022 /* -0x7f is the same as 0x80. So deal with it by adding one to
4023 the number of bits. Two's complement represention octals
4024 can't have a '-' in front. */
4025 if (sign
== -1 && !twos_complement_representation
)
4036 /* It's *BITS which has the interesting information. */
4040 static struct type
*
4041 read_range_type (char **pp
, int typenums
[2], int type_size
,
4042 struct objfile
*objfile
)
4044 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4045 char *orig_pp
= *pp
;
4050 struct type
*result_type
;
4051 struct type
*index_type
= NULL
;
4053 /* First comes a type we are a subrange of.
4054 In C it is usually 0, 1 or the type being defined. */
4055 if (read_type_number (pp
, rangenums
) != 0)
4056 return error_type (pp
, objfile
);
4057 self_subrange
= (rangenums
[0] == typenums
[0] &&
4058 rangenums
[1] == typenums
[1]);
4063 index_type
= read_type (pp
, objfile
);
4066 /* A semicolon should now follow; skip it. */
4070 /* The remaining two operands are usually lower and upper bounds
4071 of the range. But in some special cases they mean something else. */
4072 n2
= read_huge_number (pp
, ';', &n2bits
, type_size
);
4073 n3
= read_huge_number (pp
, ';', &n3bits
, type_size
);
4075 if (n2bits
== -1 || n3bits
== -1)
4076 return error_type (pp
, objfile
);
4079 goto handle_true_range
;
4081 /* If limits are huge, must be large integral type. */
4082 if (n2bits
!= 0 || n3bits
!= 0)
4084 char got_signed
= 0;
4085 char got_unsigned
= 0;
4086 /* Number of bits in the type. */
4089 /* If a type size attribute has been specified, the bounds of
4090 the range should fit in this size. If the lower bounds needs
4091 more bits than the upper bound, then the type is signed. */
4092 if (n2bits
<= type_size
&& n3bits
<= type_size
)
4094 if (n2bits
== type_size
&& n2bits
> n3bits
)
4100 /* Range from 0 to <large number> is an unsigned large integral type. */
4101 else if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
4106 /* Range from <large number> to <large number>-1 is a large signed
4107 integral type. Take care of the case where <large number> doesn't
4108 fit in a long but <large number>-1 does. */
4109 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
4110 || (n2bits
!= 0 && n3bits
== 0
4111 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
4118 if (got_signed
|| got_unsigned
)
4120 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
4121 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
4125 return error_type (pp
, objfile
);
4128 /* A type defined as a subrange of itself, with bounds both 0, is void. */
4129 if (self_subrange
&& n2
== 0 && n3
== 0)
4130 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
4132 /* If n3 is zero and n2 is positive, we want a floating type, and n2
4133 is the width in bytes.
4135 Fortran programs appear to use this for complex types also. To
4136 distinguish between floats and complex, g77 (and others?) seem
4137 to use self-subranges for the complexes, and subranges of int for
4140 Also note that for complexes, g77 sets n2 to the size of one of
4141 the member floats, not the whole complex beast. My guess is that
4142 this was to work well with pre-COMPLEX versions of gdb. */
4144 if (n3
== 0 && n2
> 0)
4146 struct type
*float_type
4147 = init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
4151 struct type
*complex_type
=
4152 init_type (TYPE_CODE_COMPLEX
, 2 * n2
, 0, NULL
, objfile
);
4154 TYPE_TARGET_TYPE (complex_type
) = float_type
;
4155 return complex_type
;
4161 /* If the upper bound is -1, it must really be an unsigned integral. */
4163 else if (n2
== 0 && n3
== -1)
4165 int bits
= type_size
;
4169 /* We don't know its size. It is unsigned int or unsigned
4170 long. GCC 2.3.3 uses this for long long too, but that is
4171 just a GDB 3.5 compatibility hack. */
4172 bits
= gdbarch_int_bit (gdbarch
);
4175 return init_type (TYPE_CODE_INT
, bits
/ TARGET_CHAR_BIT
,
4176 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
4179 /* Special case: char is defined (Who knows why) as a subrange of
4180 itself with range 0-127. */
4181 else if (self_subrange
&& n2
== 0 && n3
== 127)
4182 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_NOSIGN
, NULL
, objfile
);
4184 /* We used to do this only for subrange of self or subrange of int. */
4187 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
4188 "unsigned long", and we already checked for that,
4189 so don't need to test for it here. */
4192 /* n3 actually gives the size. */
4193 return init_type (TYPE_CODE_INT
, -n3
, TYPE_FLAG_UNSIGNED
,
4196 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
4197 unsigned n-byte integer. But do require n to be a power of
4198 two; we don't want 3- and 5-byte integers flying around. */
4204 for (bytes
= 0; (bits
& 0xff) == 0xff; bytes
++)
4207 && ((bytes
- 1) & bytes
) == 0) /* "bytes is a power of two" */
4208 return init_type (TYPE_CODE_INT
, bytes
, TYPE_FLAG_UNSIGNED
, NULL
,
4212 /* I think this is for Convex "long long". Since I don't know whether
4213 Convex sets self_subrange, I also accept that particular size regardless
4214 of self_subrange. */
4215 else if (n3
== 0 && n2
< 0
4217 || n2
== -gdbarch_long_long_bit
4218 (gdbarch
) / TARGET_CHAR_BIT
))
4219 return init_type (TYPE_CODE_INT
, -n2
, 0, NULL
, objfile
);
4220 else if (n2
== -n3
- 1)
4223 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
4225 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
4226 if (n3
== 0x7fffffff)
4227 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
4230 /* We have a real range type on our hands. Allocate space and
4231 return a real pointer. */
4235 index_type
= objfile_type (objfile
)->builtin_int
;
4237 index_type
= *dbx_lookup_type (rangenums
, objfile
);
4238 if (index_type
== NULL
)
4240 /* Does this actually ever happen? Is that why we are worrying
4241 about dealing with it rather than just calling error_type? */
4243 complaint (&symfile_complaints
,
4244 _("base type %d of range type is not defined"), rangenums
[1]);
4246 index_type
= objfile_type (objfile
)->builtin_int
;
4249 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
4250 return (result_type
);
4253 /* Read in an argument list. This is a list of types, separated by commas
4254 and terminated with END. Return the list of types read in, or NULL
4255 if there is an error. */
4257 static struct field
*
4258 read_args (char **pp
, int end
, struct objfile
*objfile
, int *nargsp
,
4261 /* FIXME! Remove this arbitrary limit! */
4262 struct type
*types
[1024]; /* Allow for fns of 1023 parameters. */
4269 /* Invalid argument list: no ','. */
4272 STABS_CONTINUE (pp
, objfile
);
4273 types
[n
++] = read_type (pp
, objfile
);
4275 (*pp
)++; /* get past `end' (the ':' character). */
4279 /* We should read at least the THIS parameter here. Some broken stabs
4280 output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should
4281 have been present ";-16,(0,43)" reference instead. This way the
4282 excessive ";" marker prematurely stops the parameters parsing. */
4284 complaint (&symfile_complaints
, _("Invalid (empty) method arguments"));
4287 else if (TYPE_CODE (types
[n
- 1]) != TYPE_CODE_VOID
)
4295 rval
= (struct field
*) xmalloc (n
* sizeof (struct field
));
4296 memset (rval
, 0, n
* sizeof (struct field
));
4297 for (i
= 0; i
< n
; i
++)
4298 rval
[i
].type
= types
[i
];
4303 /* Common block handling. */
4305 /* List of symbols declared since the last BCOMM. This list is a tail
4306 of local_symbols. When ECOMM is seen, the symbols on the list
4307 are noted so their proper addresses can be filled in later,
4308 using the common block base address gotten from the assembler
4311 static struct pending
*common_block
;
4312 static int common_block_i
;
4314 /* Name of the current common block. We get it from the BCOMM instead of the
4315 ECOMM to match IBM documentation (even though IBM puts the name both places
4316 like everyone else). */
4317 static char *common_block_name
;
4319 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4320 to remain after this function returns. */
4323 common_block_start (char *name
, struct objfile
*objfile
)
4325 if (common_block_name
!= NULL
)
4327 complaint (&symfile_complaints
,
4328 _("Invalid symbol data: common block within common block"));
4330 common_block
= local_symbols
;
4331 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
4332 common_block_name
= obstack_copy0 (&objfile
->objfile_obstack
,
4333 name
, strlen (name
));
4336 /* Process a N_ECOMM symbol. */
4339 common_block_end (struct objfile
*objfile
)
4341 /* Symbols declared since the BCOMM are to have the common block
4342 start address added in when we know it. common_block and
4343 common_block_i point to the first symbol after the BCOMM in
4344 the local_symbols list; copy the list and hang it off the
4345 symbol for the common block name for later fixup. */
4348 struct pending
*new = 0;
4349 struct pending
*next
;
4352 if (common_block_name
== NULL
)
4354 complaint (&symfile_complaints
, _("ECOMM symbol unmatched by BCOMM"));
4358 sym
= (struct symbol
*)
4359 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
4360 memset (sym
, 0, sizeof (struct symbol
));
4361 /* Note: common_block_name already saved on objfile_obstack. */
4362 SYMBOL_SET_LINKAGE_NAME (sym
, common_block_name
);
4363 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
4365 /* Now we copy all the symbols which have been defined since the BCOMM. */
4367 /* Copy all the struct pendings before common_block. */
4368 for (next
= local_symbols
;
4369 next
!= NULL
&& next
!= common_block
;
4372 for (j
= 0; j
< next
->nsyms
; j
++)
4373 add_symbol_to_list (next
->symbol
[j
], &new);
4376 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4377 NULL, it means copy all the local symbols (which we already did
4380 if (common_block
!= NULL
)
4381 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
4382 add_symbol_to_list (common_block
->symbol
[j
], &new);
4384 SYMBOL_TYPE (sym
) = (struct type
*) new;
4386 /* Should we be putting local_symbols back to what it was?
4389 i
= hashname (SYMBOL_LINKAGE_NAME (sym
));
4390 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
4391 global_sym_chain
[i
] = sym
;
4392 common_block_name
= NULL
;
4395 /* Add a common block's start address to the offset of each symbol
4396 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4397 the common block name). */
4400 fix_common_block (struct symbol
*sym
, CORE_ADDR valu
)
4402 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
4404 for (; next
; next
= next
->next
)
4408 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
4409 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
4415 /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector.
4416 See add_undefined_type for more details. */
4419 add_undefined_type_noname (struct type
*type
, int typenums
[2])
4423 nat
.typenums
[0] = typenums
[0];
4424 nat
.typenums
[1] = typenums
[1];
4427 if (noname_undefs_length
== noname_undefs_allocated
)
4429 noname_undefs_allocated
*= 2;
4430 noname_undefs
= (struct nat
*)
4431 xrealloc ((char *) noname_undefs
,
4432 noname_undefs_allocated
* sizeof (struct nat
));
4434 noname_undefs
[noname_undefs_length
++] = nat
;
4437 /* Add TYPE to the UNDEF_TYPES vector.
4438 See add_undefined_type for more details. */
4441 add_undefined_type_1 (struct type
*type
)
4443 if (undef_types_length
== undef_types_allocated
)
4445 undef_types_allocated
*= 2;
4446 undef_types
= (struct type
**)
4447 xrealloc ((char *) undef_types
,
4448 undef_types_allocated
* sizeof (struct type
*));
4450 undef_types
[undef_types_length
++] = type
;
4453 /* What about types defined as forward references inside of a small lexical
4455 /* Add a type to the list of undefined types to be checked through
4456 once this file has been read in.
4458 In practice, we actually maintain two such lists: The first list
4459 (UNDEF_TYPES) is used for types whose name has been provided, and
4460 concerns forward references (eg 'xs' or 'xu' forward references);
4461 the second list (NONAME_UNDEFS) is used for types whose name is
4462 unknown at creation time, because they were referenced through
4463 their type number before the actual type was declared.
4464 This function actually adds the given type to the proper list. */
4467 add_undefined_type (struct type
*type
, int typenums
[2])
4469 if (TYPE_TAG_NAME (type
) == NULL
)
4470 add_undefined_type_noname (type
, typenums
);
4472 add_undefined_type_1 (type
);
4475 /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */
4478 cleanup_undefined_types_noname (struct objfile
*objfile
)
4482 for (i
= 0; i
< noname_undefs_length
; i
++)
4484 struct nat nat
= noname_undefs
[i
];
4487 type
= dbx_lookup_type (nat
.typenums
, objfile
);
4488 if (nat
.type
!= *type
&& TYPE_CODE (*type
) != TYPE_CODE_UNDEF
)
4490 /* The instance flags of the undefined type are still unset,
4491 and needs to be copied over from the reference type.
4492 Since replace_type expects them to be identical, we need
4493 to set these flags manually before hand. */
4494 TYPE_INSTANCE_FLAGS (nat
.type
) = TYPE_INSTANCE_FLAGS (*type
);
4495 replace_type (nat
.type
, *type
);
4499 noname_undefs_length
= 0;
4502 /* Go through each undefined type, see if it's still undefined, and fix it
4503 up if possible. We have two kinds of undefined types:
4505 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4506 Fix: update array length using the element bounds
4507 and the target type's length.
4508 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4509 yet defined at the time a pointer to it was made.
4510 Fix: Do a full lookup on the struct/union tag. */
4513 cleanup_undefined_types_1 (void)
4517 /* Iterate over every undefined type, and look for a symbol whose type
4518 matches our undefined type. The symbol matches if:
4519 1. It is a typedef in the STRUCT domain;
4520 2. It has the same name, and same type code;
4521 3. The instance flags are identical.
4523 It is important to check the instance flags, because we have seen
4524 examples where the debug info contained definitions such as:
4526 "foo_t:t30=B31=xefoo_t:"
4528 In this case, we have created an undefined type named "foo_t" whose
4529 instance flags is null (when processing "xefoo_t"), and then created
4530 another type with the same name, but with different instance flags
4531 ('B' means volatile). I think that the definition above is wrong,
4532 since the same type cannot be volatile and non-volatile at the same
4533 time, but we need to be able to cope with it when it happens. The
4534 approach taken here is to treat these two types as different. */
4536 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
4538 switch (TYPE_CODE (*type
))
4541 case TYPE_CODE_STRUCT
:
4542 case TYPE_CODE_UNION
:
4543 case TYPE_CODE_ENUM
:
4545 /* Check if it has been defined since. Need to do this here
4546 as well as in check_typedef to deal with the (legitimate in
4547 C though not C++) case of several types with the same name
4548 in different source files. */
4549 if (TYPE_STUB (*type
))
4551 struct pending
*ppt
;
4553 /* Name of the type, without "struct" or "union". */
4554 const char *typename
= TYPE_TAG_NAME (*type
);
4556 if (typename
== NULL
)
4558 complaint (&symfile_complaints
, _("need a type name"));
4561 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
4563 for (i
= 0; i
< ppt
->nsyms
; i
++)
4565 struct symbol
*sym
= ppt
->symbol
[i
];
4567 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4568 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4569 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
4571 && (TYPE_INSTANCE_FLAGS (*type
) ==
4572 TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym
)))
4573 && strcmp (SYMBOL_LINKAGE_NAME (sym
),
4575 replace_type (*type
, SYMBOL_TYPE (sym
));
4584 complaint (&symfile_complaints
,
4585 _("forward-referenced types left unresolved, "
4593 undef_types_length
= 0;
4596 /* Try to fix all the undefined types we ecountered while processing
4600 cleanup_undefined_stabs_types (struct objfile
*objfile
)
4602 cleanup_undefined_types_1 ();
4603 cleanup_undefined_types_noname (objfile
);
4606 /* Scan through all of the global symbols defined in the object file,
4607 assigning values to the debugging symbols that need to be assigned
4608 to. Get these symbols from the minimal symbol table. */
4611 scan_file_globals (struct objfile
*objfile
)
4614 struct minimal_symbol
*msymbol
;
4615 struct symbol
*sym
, *prev
;
4616 struct objfile
*resolve_objfile
;
4618 /* SVR4 based linkers copy referenced global symbols from shared
4619 libraries to the main executable.
4620 If we are scanning the symbols for a shared library, try to resolve
4621 them from the minimal symbols of the main executable first. */
4623 if (symfile_objfile
&& objfile
!= symfile_objfile
)
4624 resolve_objfile
= symfile_objfile
;
4626 resolve_objfile
= objfile
;
4630 /* Avoid expensive loop through all minimal symbols if there are
4631 no unresolved symbols. */
4632 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4634 if (global_sym_chain
[hash
])
4637 if (hash
>= HASHSIZE
)
4640 ALL_OBJFILE_MSYMBOLS (resolve_objfile
, msymbol
)
4644 /* Skip static symbols. */
4645 switch (MSYMBOL_TYPE (msymbol
))
4657 /* Get the hash index and check all the symbols
4658 under that hash index. */
4660 hash
= hashname (SYMBOL_LINKAGE_NAME (msymbol
));
4662 for (sym
= global_sym_chain
[hash
]; sym
;)
4664 if (strcmp (SYMBOL_LINKAGE_NAME (msymbol
),
4665 SYMBOL_LINKAGE_NAME (sym
)) == 0)
4667 /* Splice this symbol out of the hash chain and
4668 assign the value we have to it. */
4671 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
4675 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
4678 /* Check to see whether we need to fix up a common block. */
4679 /* Note: this code might be executed several times for
4680 the same symbol if there are multiple references. */
4683 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
4685 fix_common_block (sym
,
4686 SYMBOL_VALUE_ADDRESS (msymbol
));
4690 SYMBOL_VALUE_ADDRESS (sym
)
4691 = SYMBOL_VALUE_ADDRESS (msymbol
);
4693 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
4698 sym
= SYMBOL_VALUE_CHAIN (prev
);
4702 sym
= global_sym_chain
[hash
];
4708 sym
= SYMBOL_VALUE_CHAIN (sym
);
4712 if (resolve_objfile
== objfile
)
4714 resolve_objfile
= objfile
;
4717 /* Change the storage class of any remaining unresolved globals to
4718 LOC_UNRESOLVED and remove them from the chain. */
4719 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4721 sym
= global_sym_chain
[hash
];
4725 sym
= SYMBOL_VALUE_CHAIN (sym
);
4727 /* Change the symbol address from the misleading chain value
4729 SYMBOL_VALUE_ADDRESS (prev
) = 0;
4731 /* Complain about unresolved common block symbols. */
4732 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
4733 SYMBOL_ACLASS_INDEX (prev
) = LOC_UNRESOLVED
;
4735 complaint (&symfile_complaints
,
4736 _("%s: common block `%s' from "
4737 "global_sym_chain unresolved"),
4738 objfile
->name
, SYMBOL_PRINT_NAME (prev
));
4741 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4744 /* Initialize anything that needs initializing when starting to read
4745 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4749 stabsread_init (void)
4753 /* Initialize anything that needs initializing when a completely new
4754 symbol file is specified (not just adding some symbols from another
4755 file, e.g. a shared library). */
4758 stabsread_new_init (void)
4760 /* Empty the hash table of global syms looking for values. */
4761 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4764 /* Initialize anything that needs initializing at the same time as
4765 start_symtab() is called. */
4770 global_stabs
= NULL
; /* AIX COFF */
4771 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4772 n_this_object_header_files
= 1;
4773 type_vector_length
= 0;
4774 type_vector
= (struct type
**) 0;
4776 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4777 common_block_name
= NULL
;
4780 /* Call after end_symtab(). */
4787 xfree (type_vector
);
4790 type_vector_length
= 0;
4791 previous_stab_code
= 0;
4795 finish_global_stabs (struct objfile
*objfile
)
4799 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4800 xfree (global_stabs
);
4801 global_stabs
= NULL
;
4805 /* Find the end of the name, delimited by a ':', but don't match
4806 ObjC symbols which look like -[Foo bar::]:bla. */
4808 find_name_end (char *name
)
4812 if (s
[0] == '-' || *s
== '+')
4814 /* Must be an ObjC method symbol. */
4817 error (_("invalid symbol name \"%s\""), name
);
4819 s
= strchr (s
, ']');
4822 error (_("invalid symbol name \"%s\""), name
);
4824 return strchr (s
, ':');
4828 return strchr (s
, ':');
4832 /* Initializer for this module. */
4835 _initialize_stabsread (void)
4837 rs6000_builtin_type_data
= register_objfile_data ();
4839 undef_types_allocated
= 20;
4840 undef_types_length
= 0;
4841 undef_types
= (struct type
**)
4842 xmalloc (undef_types_allocated
* sizeof (struct type
*));
4844 noname_undefs_allocated
= 20;
4845 noname_undefs_length
= 0;
4846 noname_undefs
= (struct nat
*)
4847 xmalloc (noname_undefs_allocated
* sizeof (struct nat
));
4849 stab_register_index
= register_symbol_register_impl (LOC_REGISTER
,
4850 &stab_register_funcs
);
4851 stab_regparm_index
= register_symbol_register_impl (LOC_REGPARM_ADDR
,
4852 &stab_register_funcs
);