1 /* Support routines for decoding "stabs" debugging information format.
3 Copyright (C) 1986-2015 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. */
28 #include "gdb_obstack.h"
31 #include "expression.h"
34 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */
36 #include "aout/aout64.h"
37 #include "gdb-stabs.h"
39 #include "complaints.h"
41 #include "gdb-demangle.h"
45 #include "cp-support.h"
48 /* Ask stabsread.h to define the vars it normally declares `extern'. */
51 #include "stabsread.h" /* Our own declarations */
54 extern void _initialize_stabsread (void);
56 /* The routines that read and process a complete stabs for a C struct or
57 C++ class pass lists of data member fields and lists of member function
58 fields in an instance of a field_info structure, as defined below.
59 This is part of some reorganization of low level C++ support and is
60 expected to eventually go away... (FIXME) */
66 struct nextfield
*next
;
68 /* This is the raw visibility from the stab. It is not checked
69 for being one of the visibilities we recognize, so code which
70 examines this field better be able to deal. */
76 struct next_fnfieldlist
78 struct next_fnfieldlist
*next
;
79 struct fn_fieldlist fn_fieldlist
;
85 read_one_struct_field (struct field_info
*, char **, char *,
86 struct type
*, struct objfile
*);
88 static struct type
*dbx_alloc_type (int[2], struct objfile
*);
90 static long read_huge_number (char **, int, int *, int);
92 static struct type
*error_type (char **, struct objfile
*);
95 patch_block_stabs (struct pending
*, struct pending_stabs
*,
98 static void fix_common_block (struct symbol
*, CORE_ADDR
);
100 static int read_type_number (char **, int *);
102 static struct type
*read_type (char **, struct objfile
*);
104 static struct type
*read_range_type (char **, int[2], int, struct objfile
*);
106 static struct type
*read_sun_builtin_type (char **, int[2], struct objfile
*);
108 static struct type
*read_sun_floating_type (char **, int[2],
111 static struct type
*read_enum_type (char **, struct type
*, struct objfile
*);
113 static struct type
*rs6000_builtin_type (int, struct objfile
*);
116 read_member_functions (struct field_info
*, char **, struct type
*,
120 read_struct_fields (struct field_info
*, char **, struct type
*,
124 read_baseclasses (struct field_info
*, char **, struct type
*,
128 read_tilde_fields (struct field_info
*, char **, struct type
*,
131 static int attach_fn_fields_to_type (struct field_info
*, struct type
*);
133 static int attach_fields_to_type (struct field_info
*, struct type
*,
136 static struct type
*read_struct_type (char **, struct type
*,
140 static struct type
*read_array_type (char **, struct type
*,
143 static struct field
*read_args (char **, int, struct objfile
*, int *, int *);
145 static void add_undefined_type (struct type
*, int[2]);
148 read_cpp_abbrev (struct field_info
*, char **, struct type
*,
151 static char *find_name_end (char *name
);
153 static int process_reference (char **string
);
155 void stabsread_clear_cache (void);
157 static const char vptr_name
[] = "_vptr$";
158 static const char vb_name
[] = "_vb$";
161 invalid_cpp_abbrev_complaint (const char *arg1
)
163 complaint (&symfile_complaints
, _("invalid C++ abbreviation `%s'"), arg1
);
167 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
169 complaint (&symfile_complaints
,
170 _("register number %d too large (max %d) in symbol %s"),
171 regnum
, num_regs
- 1, sym
);
175 stabs_general_complaint (const char *arg1
)
177 complaint (&symfile_complaints
, "%s", arg1
);
180 /* Make a list of forward references which haven't been defined. */
182 static struct type
**undef_types
;
183 static int undef_types_allocated
;
184 static int undef_types_length
;
185 static struct symbol
*current_symbol
= NULL
;
187 /* Make a list of nameless types that are undefined.
188 This happens when another type is referenced by its number
189 before this type is actually defined. For instance "t(0,1)=k(0,2)"
190 and type (0,2) is defined only later. */
197 static struct nat
*noname_undefs
;
198 static int noname_undefs_allocated
;
199 static int noname_undefs_length
;
201 /* Check for and handle cretinous stabs symbol name continuation! */
202 #define STABS_CONTINUE(pp,objfile) \
204 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
205 *(pp) = next_symbol_text (objfile); \
208 /* Vector of types defined so far, indexed by their type numbers.
209 (In newer sun systems, dbx uses a pair of numbers in parens,
210 as in "(SUBFILENUM,NUMWITHINSUBFILE)".
211 Then these numbers must be translated through the type_translations
212 hash table to get the index into the type vector.) */
214 static struct type
**type_vector
;
216 /* Number of elements allocated for type_vector currently. */
218 static int type_vector_length
;
220 /* Initial size of type vector. Is realloc'd larger if needed, and
221 realloc'd down to the size actually used, when completed. */
223 #define INITIAL_TYPE_VECTOR_LENGTH 160
226 /* Look up a dbx type-number pair. Return the address of the slot
227 where the type for that number-pair is stored.
228 The number-pair is in TYPENUMS.
230 This can be used for finding the type associated with that pair
231 or for associating a new type with the pair. */
233 static struct type
**
234 dbx_lookup_type (int typenums
[2], struct objfile
*objfile
)
236 int filenum
= typenums
[0];
237 int index
= typenums
[1];
240 struct header_file
*f
;
243 if (filenum
== -1) /* -1,-1 is for temporary types. */
246 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
248 complaint (&symfile_complaints
,
249 _("Invalid symbol data: type number "
250 "(%d,%d) out of range at symtab pos %d."),
251 filenum
, index
, symnum
);
259 /* Caller wants address of address of type. We think
260 that negative (rs6k builtin) types will never appear as
261 "lvalues", (nor should they), so we stuff the real type
262 pointer into a temp, and return its address. If referenced,
263 this will do the right thing. */
264 static struct type
*temp_type
;
266 temp_type
= rs6000_builtin_type (index
, objfile
);
270 /* Type is defined outside of header files.
271 Find it in this object file's type vector. */
272 if (index
>= type_vector_length
)
274 old_len
= type_vector_length
;
277 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
278 type_vector
= (struct type
**)
279 xmalloc (type_vector_length
* sizeof (struct type
*));
281 while (index
>= type_vector_length
)
283 type_vector_length
*= 2;
285 type_vector
= (struct type
**)
286 xrealloc ((char *) type_vector
,
287 (type_vector_length
* sizeof (struct type
*)));
288 memset (&type_vector
[old_len
], 0,
289 (type_vector_length
- old_len
) * sizeof (struct type
*));
291 return (&type_vector
[index
]);
295 real_filenum
= this_object_header_files
[filenum
];
297 if (real_filenum
>= N_HEADER_FILES (objfile
))
299 static struct type
*temp_type
;
301 warning (_("GDB internal error: bad real_filenum"));
304 temp_type
= objfile_type (objfile
)->builtin_error
;
308 f
= HEADER_FILES (objfile
) + real_filenum
;
310 f_orig_length
= f
->length
;
311 if (index
>= f_orig_length
)
313 while (index
>= f
->length
)
317 f
->vector
= (struct type
**)
318 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
319 memset (&f
->vector
[f_orig_length
], 0,
320 (f
->length
- f_orig_length
) * sizeof (struct type
*));
322 return (&f
->vector
[index
]);
326 /* Make sure there is a type allocated for type numbers TYPENUMS
327 and return the type object.
328 This can create an empty (zeroed) type object.
329 TYPENUMS may be (-1, -1) to return a new type object that is not
330 put into the type vector, and so may not be referred to by number. */
333 dbx_alloc_type (int typenums
[2], struct objfile
*objfile
)
335 struct type
**type_addr
;
337 if (typenums
[0] == -1)
339 return (alloc_type (objfile
));
342 type_addr
= dbx_lookup_type (typenums
, objfile
);
344 /* If we are referring to a type not known at all yet,
345 allocate an empty type for it.
346 We will fill it in later if we find out how. */
349 *type_addr
= alloc_type (objfile
);
355 /* for all the stabs in a given stab vector, build appropriate types
356 and fix their symbols in given symbol vector. */
359 patch_block_stabs (struct pending
*symbols
, struct pending_stabs
*stabs
,
360 struct objfile
*objfile
)
369 /* for all the stab entries, find their corresponding symbols and
370 patch their types! */
372 for (ii
= 0; ii
< stabs
->count
; ++ii
)
374 name
= stabs
->stab
[ii
];
375 pp
= (char *) strchr (name
, ':');
376 gdb_assert (pp
); /* Must find a ':' or game's over. */
380 pp
= (char *) strchr (pp
, ':');
382 sym
= find_symbol_in_list (symbols
, name
, pp
- name
);
385 /* FIXME-maybe: it would be nice if we noticed whether
386 the variable was defined *anywhere*, not just whether
387 it is defined in this compilation unit. But neither
388 xlc or GCC seem to need such a definition, and until
389 we do psymtabs (so that the minimal symbols from all
390 compilation units are available now), I'm not sure
391 how to get the information. */
393 /* On xcoff, if a global is defined and never referenced,
394 ld will remove it from the executable. There is then
395 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
396 sym
= allocate_symbol (objfile
);
397 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
398 SYMBOL_ACLASS_INDEX (sym
) = LOC_OPTIMIZED_OUT
;
399 SYMBOL_SET_LINKAGE_NAME
400 (sym
, obstack_copy0 (&objfile
->objfile_obstack
,
403 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
405 /* I don't think the linker does this with functions,
406 so as far as I know this is never executed.
407 But it doesn't hurt to check. */
409 lookup_function_type (read_type (&pp
, objfile
));
413 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
415 add_symbol_to_list (sym
, &global_symbols
);
420 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
423 lookup_function_type (read_type (&pp
, objfile
));
427 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
435 /* Read a number by which a type is referred to in dbx data,
436 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
437 Just a single number N is equivalent to (0,N).
438 Return the two numbers by storing them in the vector TYPENUMS.
439 TYPENUMS will then be used as an argument to dbx_lookup_type.
441 Returns 0 for success, -1 for error. */
444 read_type_number (char **pp
, int *typenums
)
451 typenums
[0] = read_huge_number (pp
, ',', &nbits
, 0);
454 typenums
[1] = read_huge_number (pp
, ')', &nbits
, 0);
461 typenums
[1] = read_huge_number (pp
, 0, &nbits
, 0);
469 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
470 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
471 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
472 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
474 /* Structure for storing pointers to reference definitions for fast lookup
475 during "process_later". */
484 #define MAX_CHUNK_REFS 100
485 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
486 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
488 static struct ref_map
*ref_map
;
490 /* Ptr to free cell in chunk's linked list. */
491 static int ref_count
= 0;
493 /* Number of chunks malloced. */
494 static int ref_chunk
= 0;
496 /* This file maintains a cache of stabs aliases found in the symbol
497 table. If the symbol table changes, this cache must be cleared
498 or we are left holding onto data in invalid obstacks. */
500 stabsread_clear_cache (void)
506 /* Create array of pointers mapping refids to symbols and stab strings.
507 Add pointers to reference definition symbols and/or their values as we
508 find them, using their reference numbers as our index.
509 These will be used later when we resolve references. */
511 ref_add (int refnum
, struct symbol
*sym
, char *stabs
, CORE_ADDR value
)
515 if (refnum
>= ref_count
)
516 ref_count
= refnum
+ 1;
517 if (ref_count
> ref_chunk
* MAX_CHUNK_REFS
)
519 int new_slots
= ref_count
- ref_chunk
* MAX_CHUNK_REFS
;
520 int new_chunks
= new_slots
/ MAX_CHUNK_REFS
+ 1;
522 ref_map
= (struct ref_map
*)
523 xrealloc (ref_map
, REF_MAP_SIZE (ref_chunk
+ new_chunks
));
524 memset (ref_map
+ ref_chunk
* MAX_CHUNK_REFS
, 0,
525 new_chunks
* REF_CHUNK_SIZE
);
526 ref_chunk
+= new_chunks
;
528 ref_map
[refnum
].stabs
= stabs
;
529 ref_map
[refnum
].sym
= sym
;
530 ref_map
[refnum
].value
= value
;
533 /* Return defined sym for the reference REFNUM. */
535 ref_search (int refnum
)
537 if (refnum
< 0 || refnum
> ref_count
)
539 return ref_map
[refnum
].sym
;
542 /* Parse a reference id in STRING and return the resulting
543 reference number. Move STRING beyond the reference id. */
546 process_reference (char **string
)
554 /* Advance beyond the initial '#'. */
557 /* Read number as reference id. */
558 while (*p
&& isdigit (*p
))
560 refnum
= refnum
* 10 + *p
- '0';
567 /* If STRING defines a reference, store away a pointer to the reference
568 definition for later use. Return the reference number. */
571 symbol_reference_defined (char **string
)
576 refnum
= process_reference (&p
);
578 /* Defining symbols end in '='. */
581 /* Symbol is being defined here. */
587 /* Must be a reference. Either the symbol has already been defined,
588 or this is a forward reference to it. */
595 stab_reg_to_regnum (struct symbol
*sym
, struct gdbarch
*gdbarch
)
597 int regno
= gdbarch_stab_reg_to_regnum (gdbarch
, SYMBOL_VALUE (sym
));
599 if (regno
>= gdbarch_num_regs (gdbarch
)
600 + gdbarch_num_pseudo_regs (gdbarch
))
602 reg_value_complaint (regno
,
603 gdbarch_num_regs (gdbarch
)
604 + gdbarch_num_pseudo_regs (gdbarch
),
605 SYMBOL_PRINT_NAME (sym
));
607 regno
= gdbarch_sp_regnum (gdbarch
); /* Known safe, though useless. */
613 static const struct symbol_register_ops stab_register_funcs
= {
617 /* The "aclass" indices for computed symbols. */
619 static int stab_register_index
;
620 static int stab_regparm_index
;
623 define_symbol (CORE_ADDR valu
, char *string
, int desc
, int type
,
624 struct objfile
*objfile
)
626 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
628 char *p
= (char *) find_name_end (string
);
632 char *new_name
= NULL
;
634 /* We would like to eliminate nameless symbols, but keep their types.
635 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
636 to type 2, but, should not create a symbol to address that type. Since
637 the symbol will be nameless, there is no way any user can refer to it. */
641 /* Ignore syms with empty names. */
645 /* Ignore old-style symbols from cc -go. */
655 complaint (&symfile_complaints
,
656 _("Bad stabs string '%s'"), string
);
661 /* If a nameless stab entry, all we need is the type, not the symbol.
662 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
663 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
665 current_symbol
= sym
= allocate_symbol (objfile
);
667 if (processing_gcc_compilation
)
669 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
670 number of bytes occupied by a type or object, which we ignore. */
671 SYMBOL_LINE (sym
) = desc
;
675 SYMBOL_LINE (sym
) = 0; /* unknown */
678 SYMBOL_SET_LANGUAGE (sym
, current_subfile
->language
,
679 &objfile
->objfile_obstack
);
681 if (is_cplus_marker (string
[0]))
683 /* Special GNU C++ names. */
687 SYMBOL_SET_LINKAGE_NAME (sym
, "this");
690 case 'v': /* $vtbl_ptr_type */
694 SYMBOL_SET_LINKAGE_NAME (sym
, "eh_throw");
698 /* This was an anonymous type that was never fixed up. */
702 /* SunPRO (3.0 at least) static variable encoding. */
703 if (gdbarch_static_transform_name_p (gdbarch
))
705 /* ... fall through ... */
708 complaint (&symfile_complaints
, _("Unknown C++ symbol name `%s'"),
710 goto normal
; /* Do *something* with it. */
716 if (SYMBOL_LANGUAGE (sym
) == language_cplus
)
718 char *name
= alloca (p
- string
+ 1);
720 memcpy (name
, string
, p
- string
);
721 name
[p
- string
] = '\0';
722 new_name
= cp_canonicalize_string (name
);
724 if (new_name
!= NULL
)
726 SYMBOL_SET_NAMES (sym
, new_name
, strlen (new_name
), 1, objfile
);
730 SYMBOL_SET_NAMES (sym
, string
, p
- string
, 1, objfile
);
732 if (SYMBOL_LANGUAGE (sym
) == language_cplus
)
733 cp_scan_for_anonymous_namespaces (sym
, objfile
);
738 /* Determine the type of name being defined. */
740 /* Getting GDB to correctly skip the symbol on an undefined symbol
741 descriptor and not ever dump core is a very dodgy proposition if
742 we do things this way. I say the acorn RISC machine can just
743 fix their compiler. */
744 /* The Acorn RISC machine's compiler can put out locals that don't
745 start with "234=" or "(3,4)=", so assume anything other than the
746 deftypes we know how to handle is a local. */
747 if (!strchr ("cfFGpPrStTvVXCR", *p
))
749 if (isdigit (*p
) || *p
== '(' || *p
== '-')
758 /* c is a special case, not followed by a type-number.
759 SYMBOL:c=iVALUE for an integer constant symbol.
760 SYMBOL:c=rVALUE for a floating constant symbol.
761 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
762 e.g. "b:c=e6,0" for "const b = blob1"
763 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
766 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
767 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
768 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
769 add_symbol_to_list (sym
, &file_symbols
);
779 struct type
*dbl_type
;
781 /* FIXME-if-picky-about-floating-accuracy: Should be using
782 target arithmetic to get the value. real.c in GCC
783 probably has the necessary code. */
785 dbl_type
= objfile_type (objfile
)->builtin_double
;
787 obstack_alloc (&objfile
->objfile_obstack
,
788 TYPE_LENGTH (dbl_type
));
789 store_typed_floating (dbl_valu
, dbl_type
, d
);
791 SYMBOL_TYPE (sym
) = dbl_type
;
792 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
793 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST_BYTES
;
798 /* Defining integer constants this way is kind of silly,
799 since 'e' constants allows the compiler to give not
800 only the value, but the type as well. C has at least
801 int, long, unsigned int, and long long as constant
802 types; other languages probably should have at least
803 unsigned as well as signed constants. */
805 SYMBOL_TYPE (sym
) = objfile_type (objfile
)->builtin_long
;
806 SYMBOL_VALUE (sym
) = atoi (p
);
807 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
813 SYMBOL_TYPE (sym
) = objfile_type (objfile
)->builtin_char
;
814 SYMBOL_VALUE (sym
) = atoi (p
);
815 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
821 struct type
*range_type
;
824 gdb_byte
*string_local
= (gdb_byte
*) alloca (strlen (p
));
825 gdb_byte
*string_value
;
827 if (quote
!= '\'' && quote
!= '"')
829 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
830 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
831 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
832 add_symbol_to_list (sym
, &file_symbols
);
836 /* Find matching quote, rejecting escaped quotes. */
837 while (*p
&& *p
!= quote
)
839 if (*p
== '\\' && p
[1] == quote
)
841 string_local
[ind
] = (gdb_byte
) quote
;
847 string_local
[ind
] = (gdb_byte
) (*p
);
854 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
855 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
856 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
857 add_symbol_to_list (sym
, &file_symbols
);
861 /* NULL terminate the string. */
862 string_local
[ind
] = 0;
864 = create_static_range_type (NULL
,
865 objfile_type (objfile
)->builtin_int
,
867 SYMBOL_TYPE (sym
) = create_array_type (NULL
,
868 objfile_type (objfile
)->builtin_char
,
870 string_value
= obstack_alloc (&objfile
->objfile_obstack
, ind
+ 1);
871 memcpy (string_value
, string_local
, ind
+ 1);
874 SYMBOL_VALUE_BYTES (sym
) = string_value
;
875 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST_BYTES
;
880 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
881 can be represented as integral.
882 e.g. "b:c=e6,0" for "const b = blob1"
883 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
885 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
886 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
890 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
895 /* If the value is too big to fit in an int (perhaps because
896 it is unsigned), or something like that, we silently get
897 a bogus value. The type and everything else about it is
898 correct. Ideally, we should be using whatever we have
899 available for parsing unsigned and long long values,
901 SYMBOL_VALUE (sym
) = atoi (p
);
906 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
907 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
910 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
911 add_symbol_to_list (sym
, &file_symbols
);
915 /* The name of a caught exception. */
916 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
917 SYMBOL_ACLASS_INDEX (sym
) = LOC_LABEL
;
918 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
919 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
920 add_symbol_to_list (sym
, &local_symbols
);
924 /* A static function definition. */
925 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
926 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
927 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
928 add_symbol_to_list (sym
, &file_symbols
);
929 /* fall into process_function_types. */
931 process_function_types
:
932 /* Function result types are described as the result type in stabs.
933 We need to convert this to the function-returning-type-X type
934 in GDB. E.g. "int" is converted to "function returning int". */
935 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
936 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
938 /* All functions in C++ have prototypes. Stabs does not offer an
939 explicit way to identify prototyped or unprototyped functions,
940 but both GCC and Sun CC emit stabs for the "call-as" type rather
941 than the "declared-as" type for unprototyped functions, so
942 we treat all functions as if they were prototyped. This is used
943 primarily for promotion when calling the function from GDB. */
944 TYPE_PROTOTYPED (SYMBOL_TYPE (sym
)) = 1;
946 /* fall into process_prototype_types. */
948 process_prototype_types
:
949 /* Sun acc puts declared types of arguments here. */
952 struct type
*ftype
= SYMBOL_TYPE (sym
);
957 /* Obtain a worst case guess for the number of arguments
958 by counting the semicolons. */
965 /* Allocate parameter information fields and fill them in. */
966 TYPE_FIELDS (ftype
) = (struct field
*)
967 TYPE_ALLOC (ftype
, nsemi
* sizeof (struct field
));
972 /* A type number of zero indicates the start of varargs.
973 FIXME: GDB currently ignores vararg functions. */
974 if (p
[0] == '0' && p
[1] == '\0')
976 ptype
= read_type (&p
, objfile
);
978 /* The Sun compilers mark integer arguments, which should
979 be promoted to the width of the calling conventions, with
980 a type which references itself. This type is turned into
981 a TYPE_CODE_VOID type by read_type, and we have to turn
982 it back into builtin_int here.
983 FIXME: Do we need a new builtin_promoted_int_arg ? */
984 if (TYPE_CODE (ptype
) == TYPE_CODE_VOID
)
985 ptype
= objfile_type (objfile
)->builtin_int
;
986 TYPE_FIELD_TYPE (ftype
, nparams
) = ptype
;
987 TYPE_FIELD_ARTIFICIAL (ftype
, nparams
++) = 0;
989 TYPE_NFIELDS (ftype
) = nparams
;
990 TYPE_PROTOTYPED (ftype
) = 1;
995 /* A global function definition. */
996 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
997 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
998 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
999 add_symbol_to_list (sym
, &global_symbols
);
1000 goto process_function_types
;
1003 /* For a class G (global) symbol, it appears that the
1004 value is not correct. It is necessary to search for the
1005 corresponding linker definition to find the value.
1006 These definitions appear at the end of the namelist. */
1007 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1008 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1009 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1010 /* Don't add symbol references to global_sym_chain.
1011 Symbol references don't have valid names and wont't match up with
1012 minimal symbols when the global_sym_chain is relocated.
1013 We'll fixup symbol references when we fixup the defining symbol. */
1014 if (SYMBOL_LINKAGE_NAME (sym
) && SYMBOL_LINKAGE_NAME (sym
)[0] != '#')
1016 i
= hashname (SYMBOL_LINKAGE_NAME (sym
));
1017 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
1018 global_sym_chain
[i
] = sym
;
1020 add_symbol_to_list (sym
, &global_symbols
);
1023 /* This case is faked by a conditional above,
1024 when there is no code letter in the dbx data.
1025 Dbx data never actually contains 'l'. */
1028 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1029 SYMBOL_ACLASS_INDEX (sym
) = LOC_LOCAL
;
1030 SYMBOL_VALUE (sym
) = valu
;
1031 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1032 add_symbol_to_list (sym
, &local_symbols
);
1037 /* pF is a two-letter code that means a function parameter in Fortran.
1038 The type-number specifies the type of the return value.
1039 Translate it into a pointer-to-function type. */
1043 = lookup_pointer_type
1044 (lookup_function_type (read_type (&p
, objfile
)));
1047 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1049 SYMBOL_ACLASS_INDEX (sym
) = LOC_ARG
;
1050 SYMBOL_VALUE (sym
) = valu
;
1051 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1052 SYMBOL_IS_ARGUMENT (sym
) = 1;
1053 add_symbol_to_list (sym
, &local_symbols
);
1055 if (gdbarch_byte_order (gdbarch
) != BFD_ENDIAN_BIG
)
1057 /* On little-endian machines, this crud is never necessary,
1058 and, if the extra bytes contain garbage, is harmful. */
1062 /* If it's gcc-compiled, if it says `short', believe it. */
1063 if (processing_gcc_compilation
1064 || gdbarch_believe_pcc_promotion (gdbarch
))
1067 if (!gdbarch_believe_pcc_promotion (gdbarch
))
1069 /* If PCC says a parameter is a short or a char, it is
1071 if (TYPE_LENGTH (SYMBOL_TYPE (sym
))
1072 < gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
1073 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
1076 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
1077 ? objfile_type (objfile
)->builtin_unsigned_int
1078 : objfile_type (objfile
)->builtin_int
;
1084 /* acc seems to use P to declare the prototypes of functions that
1085 are referenced by this file. gdb is not prepared to deal
1086 with this extra information. FIXME, it ought to. */
1089 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1090 goto process_prototype_types
;
1095 /* Parameter which is in a register. */
1096 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1097 SYMBOL_ACLASS_INDEX (sym
) = stab_register_index
;
1098 SYMBOL_IS_ARGUMENT (sym
) = 1;
1099 SYMBOL_VALUE (sym
) = valu
;
1100 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1101 add_symbol_to_list (sym
, &local_symbols
);
1105 /* Register variable (either global or local). */
1106 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1107 SYMBOL_ACLASS_INDEX (sym
) = stab_register_index
;
1108 SYMBOL_VALUE (sym
) = valu
;
1109 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1110 if (within_function
)
1112 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1113 the same name to represent an argument passed in a
1114 register. GCC uses 'P' for the same case. So if we find
1115 such a symbol pair we combine it into one 'P' symbol.
1116 For Sun cc we need to do this regardless of
1117 stabs_argument_has_addr, because the compiler puts out
1118 the 'p' symbol even if it never saves the argument onto
1121 On most machines, we want to preserve both symbols, so
1122 that we can still get information about what is going on
1123 with the stack (VAX for computing args_printed, using
1124 stack slots instead of saved registers in backtraces,
1127 Note that this code illegally combines
1128 main(argc) struct foo argc; { register struct foo argc; }
1129 but this case is considered pathological and causes a warning
1130 from a decent compiler. */
1133 && local_symbols
->nsyms
> 0
1134 && gdbarch_stabs_argument_has_addr (gdbarch
, SYMBOL_TYPE (sym
)))
1136 struct symbol
*prev_sym
;
1138 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1139 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1140 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1141 && strcmp (SYMBOL_LINKAGE_NAME (prev_sym
),
1142 SYMBOL_LINKAGE_NAME (sym
)) == 0)
1144 SYMBOL_ACLASS_INDEX (prev_sym
) = stab_register_index
;
1145 /* Use the type from the LOC_REGISTER; that is the type
1146 that is actually in that register. */
1147 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1148 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1153 add_symbol_to_list (sym
, &local_symbols
);
1156 add_symbol_to_list (sym
, &file_symbols
);
1160 /* Static symbol at top level of file. */
1161 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1162 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1163 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1164 if (gdbarch_static_transform_name_p (gdbarch
)
1165 && gdbarch_static_transform_name (gdbarch
,
1166 SYMBOL_LINKAGE_NAME (sym
))
1167 != SYMBOL_LINKAGE_NAME (sym
))
1169 struct bound_minimal_symbol msym
;
1171 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
1173 if (msym
.minsym
!= NULL
)
1175 const char *new_name
= gdbarch_static_transform_name
1176 (gdbarch
, SYMBOL_LINKAGE_NAME (sym
));
1178 SYMBOL_SET_LINKAGE_NAME (sym
, new_name
);
1179 SYMBOL_VALUE_ADDRESS (sym
) = BMSYMBOL_VALUE_ADDRESS (msym
);
1182 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1183 add_symbol_to_list (sym
, &file_symbols
);
1187 /* In Ada, there is no distinction between typedef and non-typedef;
1188 any type declaration implicitly has the equivalent of a typedef,
1189 and thus 't' is in fact equivalent to 'Tt'.
1191 Therefore, for Ada units, we check the character immediately
1192 before the 't', and if we do not find a 'T', then make sure to
1193 create the associated symbol in the STRUCT_DOMAIN ('t' definitions
1194 will be stored in the VAR_DOMAIN). If the symbol was indeed
1195 defined as 'Tt' then the STRUCT_DOMAIN symbol will be created
1196 elsewhere, so we don't need to take care of that.
1198 This is important to do, because of forward references:
1199 The cleanup of undefined types stored in undef_types only uses
1200 STRUCT_DOMAIN symbols to perform the replacement. */
1201 synonym
= (SYMBOL_LANGUAGE (sym
) == language_ada
&& p
[-2] != 'T');
1204 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1206 /* For a nameless type, we don't want a create a symbol, thus we
1207 did not use `sym'. Return without further processing. */
1211 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
1212 SYMBOL_VALUE (sym
) = valu
;
1213 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1214 /* C++ vagaries: we may have a type which is derived from
1215 a base type which did not have its name defined when the
1216 derived class was output. We fill in the derived class's
1217 base part member's name here in that case. */
1218 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1219 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1220 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1221 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1225 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1226 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1227 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1228 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1231 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1233 /* gcc-2.6 or later (when using -fvtable-thunks)
1234 emits a unique named type for a vtable entry.
1235 Some gdb code depends on that specific name. */
1236 extern const char vtbl_ptr_name
[];
1238 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1239 && strcmp (SYMBOL_LINKAGE_NAME (sym
), vtbl_ptr_name
))
1240 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1242 /* If we are giving a name to a type such as "pointer to
1243 foo" or "function returning foo", we better not set
1244 the TYPE_NAME. If the program contains "typedef char
1245 *caddr_t;", we don't want all variables of type char
1246 * to print as caddr_t. This is not just a
1247 consequence of GDB's type management; PCC and GCC (at
1248 least through version 2.4) both output variables of
1249 either type char * or caddr_t with the type number
1250 defined in the 't' symbol for caddr_t. If a future
1251 compiler cleans this up it GDB is not ready for it
1252 yet, but if it becomes ready we somehow need to
1253 disable this check (without breaking the PCC/GCC2.4
1258 Fortunately, this check seems not to be necessary
1259 for anything except pointers or functions. */
1260 /* ezannoni: 2000-10-26. This seems to apply for
1261 versions of gcc older than 2.8. This was the original
1262 problem: with the following code gdb would tell that
1263 the type for name1 is caddr_t, and func is char().
1265 typedef char *caddr_t;
1277 /* Pascal accepts names for pointer types. */
1278 if (current_subfile
->language
== language_pascal
)
1280 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_LINKAGE_NAME (sym
);
1284 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_LINKAGE_NAME (sym
);
1287 add_symbol_to_list (sym
, &file_symbols
);
1291 /* Create the STRUCT_DOMAIN clone. */
1292 struct symbol
*struct_sym
= allocate_symbol (objfile
);
1295 SYMBOL_ACLASS_INDEX (struct_sym
) = LOC_TYPEDEF
;
1296 SYMBOL_VALUE (struct_sym
) = valu
;
1297 SYMBOL_DOMAIN (struct_sym
) = STRUCT_DOMAIN
;
1298 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1299 TYPE_NAME (SYMBOL_TYPE (sym
))
1300 = obconcat (&objfile
->objfile_obstack
,
1301 SYMBOL_LINKAGE_NAME (sym
),
1303 add_symbol_to_list (struct_sym
, &file_symbols
);
1309 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1310 by 't' which means we are typedef'ing it as well. */
1311 synonym
= *p
== 't';
1316 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1318 /* For a nameless type, we don't want a create a symbol, thus we
1319 did not use `sym'. Return without further processing. */
1323 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
1324 SYMBOL_VALUE (sym
) = valu
;
1325 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
1326 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1327 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1328 = obconcat (&objfile
->objfile_obstack
,
1329 SYMBOL_LINKAGE_NAME (sym
),
1331 add_symbol_to_list (sym
, &file_symbols
);
1335 /* Clone the sym and then modify it. */
1336 struct symbol
*typedef_sym
= allocate_symbol (objfile
);
1338 *typedef_sym
= *sym
;
1339 SYMBOL_ACLASS_INDEX (typedef_sym
) = LOC_TYPEDEF
;
1340 SYMBOL_VALUE (typedef_sym
) = valu
;
1341 SYMBOL_DOMAIN (typedef_sym
) = VAR_DOMAIN
;
1342 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1343 TYPE_NAME (SYMBOL_TYPE (sym
))
1344 = obconcat (&objfile
->objfile_obstack
,
1345 SYMBOL_LINKAGE_NAME (sym
),
1347 add_symbol_to_list (typedef_sym
, &file_symbols
);
1352 /* Static symbol of local scope. */
1353 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1354 SYMBOL_ACLASS_INDEX (sym
) = LOC_STATIC
;
1355 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1356 if (gdbarch_static_transform_name_p (gdbarch
)
1357 && gdbarch_static_transform_name (gdbarch
,
1358 SYMBOL_LINKAGE_NAME (sym
))
1359 != SYMBOL_LINKAGE_NAME (sym
))
1361 struct bound_minimal_symbol msym
;
1363 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
1365 if (msym
.minsym
!= NULL
)
1367 const char *new_name
= gdbarch_static_transform_name
1368 (gdbarch
, SYMBOL_LINKAGE_NAME (sym
));
1370 SYMBOL_SET_LINKAGE_NAME (sym
, new_name
);
1371 SYMBOL_VALUE_ADDRESS (sym
) = BMSYMBOL_VALUE_ADDRESS (msym
);
1374 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1375 add_symbol_to_list (sym
, &local_symbols
);
1379 /* Reference parameter */
1380 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1381 SYMBOL_ACLASS_INDEX (sym
) = LOC_REF_ARG
;
1382 SYMBOL_IS_ARGUMENT (sym
) = 1;
1383 SYMBOL_VALUE (sym
) = valu
;
1384 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1385 add_symbol_to_list (sym
, &local_symbols
);
1389 /* Reference parameter which is in a register. */
1390 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1391 SYMBOL_ACLASS_INDEX (sym
) = stab_regparm_index
;
1392 SYMBOL_IS_ARGUMENT (sym
) = 1;
1393 SYMBOL_VALUE (sym
) = valu
;
1394 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1395 add_symbol_to_list (sym
, &local_symbols
);
1399 /* This is used by Sun FORTRAN for "function result value".
1400 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1401 that Pascal uses it too, but when I tried it Pascal used
1402 "x:3" (local symbol) instead. */
1403 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1404 SYMBOL_ACLASS_INDEX (sym
) = LOC_LOCAL
;
1405 SYMBOL_VALUE (sym
) = valu
;
1406 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1407 add_symbol_to_list (sym
, &local_symbols
);
1411 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1412 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
1413 SYMBOL_VALUE (sym
) = 0;
1414 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1415 add_symbol_to_list (sym
, &file_symbols
);
1419 /* Some systems pass variables of certain types by reference instead
1420 of by value, i.e. they will pass the address of a structure (in a
1421 register or on the stack) instead of the structure itself. */
1423 if (gdbarch_stabs_argument_has_addr (gdbarch
, SYMBOL_TYPE (sym
))
1424 && SYMBOL_IS_ARGUMENT (sym
))
1426 /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for
1427 variables passed in a register). */
1428 if (SYMBOL_CLASS (sym
) == LOC_REGISTER
)
1429 SYMBOL_ACLASS_INDEX (sym
) = LOC_REGPARM_ADDR
;
1430 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1431 and subsequent arguments on SPARC, for example). */
1432 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
1433 SYMBOL_ACLASS_INDEX (sym
) = LOC_REF_ARG
;
1439 /* Skip rest of this symbol and return an error type.
1441 General notes on error recovery: error_type always skips to the
1442 end of the symbol (modulo cretinous dbx symbol name continuation).
1443 Thus code like this:
1445 if (*(*pp)++ != ';')
1446 return error_type (pp, objfile);
1448 is wrong because if *pp starts out pointing at '\0' (typically as the
1449 result of an earlier error), it will be incremented to point to the
1450 start of the next symbol, which might produce strange results, at least
1451 if you run off the end of the string table. Instead use
1454 return error_type (pp, objfile);
1460 foo = error_type (pp, objfile);
1464 And in case it isn't obvious, the point of all this hair is so the compiler
1465 can define new types and new syntaxes, and old versions of the
1466 debugger will be able to read the new symbol tables. */
1468 static struct type
*
1469 error_type (char **pp
, struct objfile
*objfile
)
1471 complaint (&symfile_complaints
,
1472 _("couldn't parse type; debugger out of date?"));
1475 /* Skip to end of symbol. */
1476 while (**pp
!= '\0')
1481 /* Check for and handle cretinous dbx symbol name continuation! */
1482 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1484 *pp
= next_symbol_text (objfile
);
1491 return objfile_type (objfile
)->builtin_error
;
1495 /* Read type information or a type definition; return the type. Even
1496 though this routine accepts either type information or a type
1497 definition, the distinction is relevant--some parts of stabsread.c
1498 assume that type information starts with a digit, '-', or '(' in
1499 deciding whether to call read_type. */
1501 static struct type
*
1502 read_type (char **pp
, struct objfile
*objfile
)
1504 struct type
*type
= 0;
1507 char type_descriptor
;
1509 /* Size in bits of type if specified by a type attribute, or -1 if
1510 there is no size attribute. */
1513 /* Used to distinguish string and bitstring from char-array and set. */
1516 /* Used to distinguish vector from array. */
1519 /* Read type number if present. The type number may be omitted.
1520 for instance in a two-dimensional array declared with type
1521 "ar1;1;10;ar1;1;10;4". */
1522 if ((**pp
>= '0' && **pp
<= '9')
1526 if (read_type_number (pp
, typenums
) != 0)
1527 return error_type (pp
, objfile
);
1531 /* Type is not being defined here. Either it already
1532 exists, or this is a forward reference to it.
1533 dbx_alloc_type handles both cases. */
1534 type
= dbx_alloc_type (typenums
, objfile
);
1536 /* If this is a forward reference, arrange to complain if it
1537 doesn't get patched up by the time we're done
1539 if (TYPE_CODE (type
) == TYPE_CODE_UNDEF
)
1540 add_undefined_type (type
, typenums
);
1545 /* Type is being defined here. */
1547 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1552 /* 'typenums=' not present, type is anonymous. Read and return
1553 the definition, but don't put it in the type vector. */
1554 typenums
[0] = typenums
[1] = -1;
1559 type_descriptor
= (*pp
)[-1];
1560 switch (type_descriptor
)
1564 enum type_code code
;
1566 /* Used to index through file_symbols. */
1567 struct pending
*ppt
;
1570 /* Name including "struct", etc. */
1574 char *from
, *to
, *p
, *q1
, *q2
;
1576 /* Set the type code according to the following letter. */
1580 code
= TYPE_CODE_STRUCT
;
1583 code
= TYPE_CODE_UNION
;
1586 code
= TYPE_CODE_ENUM
;
1590 /* Complain and keep going, so compilers can invent new
1591 cross-reference types. */
1592 complaint (&symfile_complaints
,
1593 _("Unrecognized cross-reference type `%c'"),
1595 code
= TYPE_CODE_STRUCT
;
1600 q1
= strchr (*pp
, '<');
1601 p
= strchr (*pp
, ':');
1603 return error_type (pp
, objfile
);
1604 if (q1
&& p
> q1
&& p
[1] == ':')
1606 int nesting_level
= 0;
1608 for (q2
= q1
; *q2
; q2
++)
1612 else if (*q2
== '>')
1614 else if (*q2
== ':' && nesting_level
== 0)
1619 return error_type (pp
, objfile
);
1622 if (current_subfile
->language
== language_cplus
)
1624 char *new_name
, *name
= alloca (p
- *pp
+ 1);
1626 memcpy (name
, *pp
, p
- *pp
);
1627 name
[p
- *pp
] = '\0';
1628 new_name
= cp_canonicalize_string (name
);
1629 if (new_name
!= NULL
)
1631 type_name
= obstack_copy0 (&objfile
->objfile_obstack
,
1632 new_name
, strlen (new_name
));
1636 if (type_name
== NULL
)
1638 to
= type_name
= (char *)
1639 obstack_alloc (&objfile
->objfile_obstack
, p
- *pp
+ 1);
1641 /* Copy the name. */
1648 /* Set the pointer ahead of the name which we just read, and
1653 /* If this type has already been declared, then reuse the same
1654 type, rather than allocating a new one. This saves some
1657 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1658 for (i
= 0; i
< ppt
->nsyms
; i
++)
1660 struct symbol
*sym
= ppt
->symbol
[i
];
1662 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1663 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
1664 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1665 && strcmp (SYMBOL_LINKAGE_NAME (sym
), type_name
) == 0)
1667 obstack_free (&objfile
->objfile_obstack
, type_name
);
1668 type
= SYMBOL_TYPE (sym
);
1669 if (typenums
[0] != -1)
1670 *dbx_lookup_type (typenums
, objfile
) = type
;
1675 /* Didn't find the type to which this refers, so we must
1676 be dealing with a forward reference. Allocate a type
1677 structure for it, and keep track of it so we can
1678 fill in the rest of the fields when we get the full
1680 type
= dbx_alloc_type (typenums
, objfile
);
1681 TYPE_CODE (type
) = code
;
1682 TYPE_TAG_NAME (type
) = type_name
;
1683 INIT_CPLUS_SPECIFIC (type
);
1684 TYPE_STUB (type
) = 1;
1686 add_undefined_type (type
, typenums
);
1690 case '-': /* RS/6000 built-in type */
1704 /* We deal with something like t(1,2)=(3,4)=... which
1705 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1707 /* Allocate and enter the typedef type first.
1708 This handles recursive types. */
1709 type
= dbx_alloc_type (typenums
, objfile
);
1710 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1712 struct type
*xtype
= read_type (pp
, objfile
);
1716 /* It's being defined as itself. That means it is "void". */
1717 TYPE_CODE (type
) = TYPE_CODE_VOID
;
1718 TYPE_LENGTH (type
) = 1;
1720 else if (type_size
>= 0 || is_string
)
1722 /* This is the absolute wrong way to construct types. Every
1723 other debug format has found a way around this problem and
1724 the related problems with unnecessarily stubbed types;
1725 someone motivated should attempt to clean up the issue
1726 here as well. Once a type pointed to has been created it
1727 should not be modified.
1729 Well, it's not *absolutely* wrong. Constructing recursive
1730 types (trees, linked lists) necessarily entails modifying
1731 types after creating them. Constructing any loop structure
1732 entails side effects. The Dwarf 2 reader does handle this
1733 more gracefully (it never constructs more than once
1734 instance of a type object, so it doesn't have to copy type
1735 objects wholesale), but it still mutates type objects after
1736 other folks have references to them.
1738 Keep in mind that this circularity/mutation issue shows up
1739 at the source language level, too: C's "incomplete types",
1740 for example. So the proper cleanup, I think, would be to
1741 limit GDB's type smashing to match exactly those required
1742 by the source language. So GDB could have a
1743 "complete_this_type" function, but never create unnecessary
1744 copies of a type otherwise. */
1745 replace_type (type
, xtype
);
1746 TYPE_NAME (type
) = NULL
;
1747 TYPE_TAG_NAME (type
) = NULL
;
1751 TYPE_TARGET_STUB (type
) = 1;
1752 TYPE_TARGET_TYPE (type
) = xtype
;
1757 /* In the following types, we must be sure to overwrite any existing
1758 type that the typenums refer to, rather than allocating a new one
1759 and making the typenums point to the new one. This is because there
1760 may already be pointers to the existing type (if it had been
1761 forward-referenced), and we must change it to a pointer, function,
1762 reference, or whatever, *in-place*. */
1764 case '*': /* Pointer to another type */
1765 type1
= read_type (pp
, objfile
);
1766 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
, objfile
));
1769 case '&': /* Reference to another type */
1770 type1
= read_type (pp
, objfile
);
1771 type
= make_reference_type (type1
, dbx_lookup_type (typenums
, objfile
));
1774 case 'f': /* Function returning another type */
1775 type1
= read_type (pp
, objfile
);
1776 type
= make_function_type (type1
, dbx_lookup_type (typenums
, objfile
));
1779 case 'g': /* Prototyped function. (Sun) */
1781 /* Unresolved questions:
1783 - According to Sun's ``STABS Interface Manual'', for 'f'
1784 and 'F' symbol descriptors, a `0' in the argument type list
1785 indicates a varargs function. But it doesn't say how 'g'
1786 type descriptors represent that info. Someone with access
1787 to Sun's toolchain should try it out.
1789 - According to the comment in define_symbol (search for
1790 `process_prototype_types:'), Sun emits integer arguments as
1791 types which ref themselves --- like `void' types. Do we
1792 have to deal with that here, too? Again, someone with
1793 access to Sun's toolchain should try it out and let us
1796 const char *type_start
= (*pp
) - 1;
1797 struct type
*return_type
= read_type (pp
, objfile
);
1798 struct type
*func_type
1799 = make_function_type (return_type
,
1800 dbx_lookup_type (typenums
, objfile
));
1803 struct type_list
*next
;
1807 while (**pp
&& **pp
!= '#')
1809 struct type
*arg_type
= read_type (pp
, objfile
);
1810 struct type_list
*new = alloca (sizeof (*new));
1811 new->type
= arg_type
;
1812 new->next
= arg_types
;
1820 complaint (&symfile_complaints
,
1821 _("Prototyped function type didn't "
1822 "end arguments with `#':\n%s"),
1826 /* If there is just one argument whose type is `void', then
1827 that's just an empty argument list. */
1829 && ! arg_types
->next
1830 && TYPE_CODE (arg_types
->type
) == TYPE_CODE_VOID
)
1833 TYPE_FIELDS (func_type
)
1834 = (struct field
*) TYPE_ALLOC (func_type
,
1835 num_args
* sizeof (struct field
));
1836 memset (TYPE_FIELDS (func_type
), 0, num_args
* sizeof (struct field
));
1839 struct type_list
*t
;
1841 /* We stuck each argument type onto the front of the list
1842 when we read it, so the list is reversed. Build the
1843 fields array right-to-left. */
1844 for (t
= arg_types
, i
= num_args
- 1; t
; t
= t
->next
, i
--)
1845 TYPE_FIELD_TYPE (func_type
, i
) = t
->type
;
1847 TYPE_NFIELDS (func_type
) = num_args
;
1848 TYPE_PROTOTYPED (func_type
) = 1;
1854 case 'k': /* Const qualifier on some type (Sun) */
1855 type
= read_type (pp
, objfile
);
1856 type
= make_cv_type (1, TYPE_VOLATILE (type
), type
,
1857 dbx_lookup_type (typenums
, objfile
));
1860 case 'B': /* Volatile qual on some type (Sun) */
1861 type
= read_type (pp
, objfile
);
1862 type
= make_cv_type (TYPE_CONST (type
), 1, type
,
1863 dbx_lookup_type (typenums
, objfile
));
1867 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
1868 { /* Member (class & variable) type */
1869 /* FIXME -- we should be doing smash_to_XXX types here. */
1871 struct type
*domain
= read_type (pp
, objfile
);
1872 struct type
*memtype
;
1875 /* Invalid member type data format. */
1876 return error_type (pp
, objfile
);
1879 memtype
= read_type (pp
, objfile
);
1880 type
= dbx_alloc_type (typenums
, objfile
);
1881 smash_to_memberptr_type (type
, domain
, memtype
);
1884 /* type attribute */
1888 /* Skip to the semicolon. */
1889 while (**pp
!= ';' && **pp
!= '\0')
1892 return error_type (pp
, objfile
);
1894 ++ * pp
; /* Skip the semicolon. */
1898 case 's': /* Size attribute */
1899 type_size
= atoi (attr
+ 1);
1904 case 'S': /* String attribute */
1905 /* FIXME: check to see if following type is array? */
1909 case 'V': /* Vector attribute */
1910 /* FIXME: check to see if following type is array? */
1915 /* Ignore unrecognized type attributes, so future compilers
1916 can invent new ones. */
1924 case '#': /* Method (class & fn) type */
1925 if ((*pp
)[0] == '#')
1927 /* We'll get the parameter types from the name. */
1928 struct type
*return_type
;
1931 return_type
= read_type (pp
, objfile
);
1932 if (*(*pp
)++ != ';')
1933 complaint (&symfile_complaints
,
1934 _("invalid (minimal) member type "
1935 "data format at symtab pos %d."),
1937 type
= allocate_stub_method (return_type
);
1938 if (typenums
[0] != -1)
1939 *dbx_lookup_type (typenums
, objfile
) = type
;
1943 struct type
*domain
= read_type (pp
, objfile
);
1944 struct type
*return_type
;
1949 /* Invalid member type data format. */
1950 return error_type (pp
, objfile
);
1954 return_type
= read_type (pp
, objfile
);
1955 args
= read_args (pp
, ';', objfile
, &nargs
, &varargs
);
1957 return error_type (pp
, objfile
);
1958 type
= dbx_alloc_type (typenums
, objfile
);
1959 smash_to_method_type (type
, domain
, return_type
, args
,
1964 case 'r': /* Range type */
1965 type
= read_range_type (pp
, typenums
, type_size
, objfile
);
1966 if (typenums
[0] != -1)
1967 *dbx_lookup_type (typenums
, objfile
) = type
;
1972 /* Sun ACC builtin int type */
1973 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1974 if (typenums
[0] != -1)
1975 *dbx_lookup_type (typenums
, objfile
) = type
;
1979 case 'R': /* Sun ACC builtin float type */
1980 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1981 if (typenums
[0] != -1)
1982 *dbx_lookup_type (typenums
, objfile
) = type
;
1985 case 'e': /* Enumeration type */
1986 type
= dbx_alloc_type (typenums
, objfile
);
1987 type
= read_enum_type (pp
, type
, objfile
);
1988 if (typenums
[0] != -1)
1989 *dbx_lookup_type (typenums
, objfile
) = type
;
1992 case 's': /* Struct type */
1993 case 'u': /* Union type */
1995 enum type_code type_code
= TYPE_CODE_UNDEF
;
1996 type
= dbx_alloc_type (typenums
, objfile
);
1997 switch (type_descriptor
)
2000 type_code
= TYPE_CODE_STRUCT
;
2003 type_code
= TYPE_CODE_UNION
;
2006 type
= read_struct_type (pp
, type
, type_code
, objfile
);
2010 case 'a': /* Array type */
2012 return error_type (pp
, objfile
);
2015 type
= dbx_alloc_type (typenums
, objfile
);
2016 type
= read_array_type (pp
, type
, objfile
);
2018 TYPE_CODE (type
) = TYPE_CODE_STRING
;
2020 make_vector_type (type
);
2023 case 'S': /* Set type */
2024 type1
= read_type (pp
, objfile
);
2025 type
= create_set_type ((struct type
*) NULL
, type1
);
2026 if (typenums
[0] != -1)
2027 *dbx_lookup_type (typenums
, objfile
) = type
;
2031 --*pp
; /* Go back to the symbol in error. */
2032 /* Particularly important if it was \0! */
2033 return error_type (pp
, objfile
);
2038 warning (_("GDB internal error, type is NULL in stabsread.c."));
2039 return error_type (pp
, objfile
);
2042 /* Size specified in a type attribute overrides any other size. */
2043 if (type_size
!= -1)
2044 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
2049 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
2050 Return the proper type node for a given builtin type number. */
2052 static const struct objfile_data
*rs6000_builtin_type_data
;
2054 static struct type
*
2055 rs6000_builtin_type (int typenum
, struct objfile
*objfile
)
2057 struct type
**negative_types
= objfile_data (objfile
,
2058 rs6000_builtin_type_data
);
2060 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
2061 #define NUMBER_RECOGNIZED 34
2062 struct type
*rettype
= NULL
;
2064 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
2066 complaint (&symfile_complaints
, _("Unknown builtin type %d"), typenum
);
2067 return objfile_type (objfile
)->builtin_error
;
2070 if (!negative_types
)
2072 /* This includes an empty slot for type number -0. */
2073 negative_types
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
2074 NUMBER_RECOGNIZED
+ 1, struct type
*);
2075 set_objfile_data (objfile
, rs6000_builtin_type_data
, negative_types
);
2078 if (negative_types
[-typenum
] != NULL
)
2079 return negative_types
[-typenum
];
2081 #if TARGET_CHAR_BIT != 8
2082 #error This code wrong for TARGET_CHAR_BIT not 8
2083 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
2084 that if that ever becomes not true, the correct fix will be to
2085 make the size in the struct type to be in bits, not in units of
2092 /* The size of this and all the other types are fixed, defined
2093 by the debugging format. If there is a type called "int" which
2094 is other than 32 bits, then it should use a new negative type
2095 number (or avoid negative type numbers for that case).
2096 See stabs.texinfo. */
2097 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", objfile
);
2100 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", objfile
);
2103 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", objfile
);
2106 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", objfile
);
2109 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
2110 "unsigned char", objfile
);
2113 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", objfile
);
2116 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
2117 "unsigned short", objfile
);
2120 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2121 "unsigned int", objfile
);
2124 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2125 "unsigned", objfile
);
2128 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2129 "unsigned long", objfile
);
2132 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", objfile
);
2135 /* IEEE single precision (32 bit). */
2136 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", objfile
);
2139 /* IEEE double precision (64 bit). */
2140 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", objfile
);
2143 /* This is an IEEE double on the RS/6000, and different machines with
2144 different sizes for "long double" should use different negative
2145 type numbers. See stabs.texinfo. */
2146 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", objfile
);
2149 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", objfile
);
2152 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2153 "boolean", objfile
);
2156 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", objfile
);
2159 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", objfile
);
2162 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", objfile
);
2165 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
2166 "character", objfile
);
2169 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
2170 "logical*1", objfile
);
2173 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
2174 "logical*2", objfile
);
2177 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2178 "logical*4", objfile
);
2181 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2182 "logical", objfile
);
2185 /* Complex type consisting of two IEEE single precision values. */
2186 rettype
= init_type (TYPE_CODE_COMPLEX
, 8, 0, "complex", objfile
);
2187 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 4, 0, "float",
2191 /* Complex type consisting of two IEEE double precision values. */
2192 rettype
= init_type (TYPE_CODE_COMPLEX
, 16, 0, "double complex", NULL
);
2193 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 8, 0, "double",
2197 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", objfile
);
2200 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", objfile
);
2203 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", objfile
);
2206 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", objfile
);
2209 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", objfile
);
2212 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2213 "unsigned long long", objfile
);
2216 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2217 "logical*8", objfile
);
2220 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", objfile
);
2223 negative_types
[-typenum
] = rettype
;
2227 /* This page contains subroutines of read_type. */
2229 /* Wrapper around method_name_from_physname to flag a complaint
2230 if there is an error. */
2233 stabs_method_name_from_physname (const char *physname
)
2237 method_name
= method_name_from_physname (physname
);
2239 if (method_name
== NULL
)
2241 complaint (&symfile_complaints
,
2242 _("Method has bad physname %s\n"), physname
);
2249 /* Read member function stabs info for C++ classes. The form of each member
2252 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2254 An example with two member functions is:
2256 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2258 For the case of overloaded operators, the format is op$::*.funcs, where
2259 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2260 name (such as `+=') and `.' marks the end of the operator name.
2262 Returns 1 for success, 0 for failure. */
2265 read_member_functions (struct field_info
*fip
, char **pp
, struct type
*type
,
2266 struct objfile
*objfile
)
2273 struct next_fnfield
*next
;
2274 struct fn_field fn_field
;
2277 struct type
*look_ahead_type
;
2278 struct next_fnfieldlist
*new_fnlist
;
2279 struct next_fnfield
*new_sublist
;
2283 /* Process each list until we find something that is not a member function
2284 or find the end of the functions. */
2288 /* We should be positioned at the start of the function name.
2289 Scan forward to find the first ':' and if it is not the
2290 first of a "::" delimiter, then this is not a member function. */
2302 look_ahead_type
= NULL
;
2305 new_fnlist
= (struct next_fnfieldlist
*)
2306 xmalloc (sizeof (struct next_fnfieldlist
));
2307 make_cleanup (xfree
, new_fnlist
);
2308 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2310 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
2312 /* This is a completely wierd case. In order to stuff in the
2313 names that might contain colons (the usual name delimiter),
2314 Mike Tiemann defined a different name format which is
2315 signalled if the identifier is "op$". In that case, the
2316 format is "op$::XXXX." where XXXX is the name. This is
2317 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2318 /* This lets the user type "break operator+".
2319 We could just put in "+" as the name, but that wouldn't
2321 static char opname
[32] = "op$";
2322 char *o
= opname
+ 3;
2324 /* Skip past '::'. */
2327 STABS_CONTINUE (pp
, objfile
);
2333 main_fn_name
= savestring (opname
, o
- opname
);
2339 main_fn_name
= savestring (*pp
, p
- *pp
);
2340 /* Skip past '::'. */
2343 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
2348 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2349 make_cleanup (xfree
, new_sublist
);
2350 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2352 /* Check for and handle cretinous dbx symbol name continuation! */
2353 if (look_ahead_type
== NULL
)
2356 STABS_CONTINUE (pp
, objfile
);
2358 new_sublist
->fn_field
.type
= read_type (pp
, objfile
);
2361 /* Invalid symtab info for member function. */
2367 /* g++ version 1 kludge */
2368 new_sublist
->fn_field
.type
= look_ahead_type
;
2369 look_ahead_type
= NULL
;
2379 /* These are methods, not functions. */
2380 if (TYPE_CODE (new_sublist
->fn_field
.type
) == TYPE_CODE_FUNC
)
2381 TYPE_CODE (new_sublist
->fn_field
.type
) = TYPE_CODE_METHOD
;
2383 gdb_assert (TYPE_CODE (new_sublist
->fn_field
.type
)
2384 == TYPE_CODE_METHOD
);
2386 /* If this is just a stub, then we don't have the real name here. */
2387 if (TYPE_STUB (new_sublist
->fn_field
.type
))
2389 if (!TYPE_SELF_TYPE (new_sublist
->fn_field
.type
))
2390 set_type_self_type (new_sublist
->fn_field
.type
, type
);
2391 new_sublist
->fn_field
.is_stub
= 1;
2394 new_sublist
->fn_field
.physname
= savestring (*pp
, p
- *pp
);
2397 /* Set this member function's visibility fields. */
2400 case VISIBILITY_PRIVATE
:
2401 new_sublist
->fn_field
.is_private
= 1;
2403 case VISIBILITY_PROTECTED
:
2404 new_sublist
->fn_field
.is_protected
= 1;
2408 STABS_CONTINUE (pp
, objfile
);
2411 case 'A': /* Normal functions. */
2412 new_sublist
->fn_field
.is_const
= 0;
2413 new_sublist
->fn_field
.is_volatile
= 0;
2416 case 'B': /* `const' member functions. */
2417 new_sublist
->fn_field
.is_const
= 1;
2418 new_sublist
->fn_field
.is_volatile
= 0;
2421 case 'C': /* `volatile' member function. */
2422 new_sublist
->fn_field
.is_const
= 0;
2423 new_sublist
->fn_field
.is_volatile
= 1;
2426 case 'D': /* `const volatile' member function. */
2427 new_sublist
->fn_field
.is_const
= 1;
2428 new_sublist
->fn_field
.is_volatile
= 1;
2431 case '*': /* File compiled with g++ version 1 --
2437 complaint (&symfile_complaints
,
2438 _("const/volatile indicator missing, got '%c'"),
2448 /* virtual member function, followed by index.
2449 The sign bit is set to distinguish pointers-to-methods
2450 from virtual function indicies. Since the array is
2451 in words, the quantity must be shifted left by 1
2452 on 16 bit machine, and by 2 on 32 bit machine, forcing
2453 the sign bit out, and usable as a valid index into
2454 the array. Remove the sign bit here. */
2455 new_sublist
->fn_field
.voffset
=
2456 (0x7fffffff & read_huge_number (pp
, ';', &nbits
, 0)) + 2;
2460 STABS_CONTINUE (pp
, objfile
);
2461 if (**pp
== ';' || **pp
== '\0')
2463 /* Must be g++ version 1. */
2464 new_sublist
->fn_field
.fcontext
= 0;
2468 /* Figure out from whence this virtual function came.
2469 It may belong to virtual function table of
2470 one of its baseclasses. */
2471 look_ahead_type
= read_type (pp
, objfile
);
2474 /* g++ version 1 overloaded methods. */
2478 new_sublist
->fn_field
.fcontext
= look_ahead_type
;
2487 look_ahead_type
= NULL
;
2493 /* static member function. */
2495 int slen
= strlen (main_fn_name
);
2497 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
2499 /* For static member functions, we can't tell if they
2500 are stubbed, as they are put out as functions, and not as
2502 GCC v2 emits the fully mangled name if
2503 dbxout.c:flag_minimal_debug is not set, so we have to
2504 detect a fully mangled physname here and set is_stub
2505 accordingly. Fully mangled physnames in v2 start with
2506 the member function name, followed by two underscores.
2507 GCC v3 currently always emits stubbed member functions,
2508 but with fully mangled physnames, which start with _Z. */
2509 if (!(strncmp (new_sublist
->fn_field
.physname
,
2510 main_fn_name
, slen
) == 0
2511 && new_sublist
->fn_field
.physname
[slen
] == '_'
2512 && new_sublist
->fn_field
.physname
[slen
+ 1] == '_'))
2514 new_sublist
->fn_field
.is_stub
= 1;
2521 complaint (&symfile_complaints
,
2522 _("member function type missing, got '%c'"),
2524 /* Fall through into normal member function. */
2527 /* normal member function. */
2528 new_sublist
->fn_field
.voffset
= 0;
2529 new_sublist
->fn_field
.fcontext
= 0;
2533 new_sublist
->next
= sublist
;
2534 sublist
= new_sublist
;
2536 STABS_CONTINUE (pp
, objfile
);
2538 while (**pp
!= ';' && **pp
!= '\0');
2541 STABS_CONTINUE (pp
, objfile
);
2543 /* Skip GCC 3.X member functions which are duplicates of the callable
2544 constructor/destructor. */
2545 if (strcmp_iw (main_fn_name
, "__base_ctor ") == 0
2546 || strcmp_iw (main_fn_name
, "__base_dtor ") == 0
2547 || strcmp (main_fn_name
, "__deleting_dtor") == 0)
2549 xfree (main_fn_name
);
2554 int has_destructor
= 0, has_other
= 0;
2556 struct next_fnfield
*tmp_sublist
;
2558 /* Various versions of GCC emit various mostly-useless
2559 strings in the name field for special member functions.
2561 For stub methods, we need to defer correcting the name
2562 until we are ready to unstub the method, because the current
2563 name string is used by gdb_mangle_name. The only stub methods
2564 of concern here are GNU v2 operators; other methods have their
2565 names correct (see caveat below).
2567 For non-stub methods, in GNU v3, we have a complete physname.
2568 Therefore we can safely correct the name now. This primarily
2569 affects constructors and destructors, whose name will be
2570 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2571 operators will also have incorrect names; for instance,
2572 "operator int" will be named "operator i" (i.e. the type is
2575 For non-stub methods in GNU v2, we have no easy way to
2576 know if we have a complete physname or not. For most
2577 methods the result depends on the platform (if CPLUS_MARKER
2578 can be `$' or `.', it will use minimal debug information, or
2579 otherwise the full physname will be included).
2581 Rather than dealing with this, we take a different approach.
2582 For v3 mangled names, we can use the full physname; for v2,
2583 we use cplus_demangle_opname (which is actually v2 specific),
2584 because the only interesting names are all operators - once again
2585 barring the caveat below. Skip this process if any method in the
2586 group is a stub, to prevent our fouling up the workings of
2589 The caveat: GCC 2.95.x (and earlier?) put constructors and
2590 destructors in the same method group. We need to split this
2591 into two groups, because they should have different names.
2592 So for each method group we check whether it contains both
2593 routines whose physname appears to be a destructor (the physnames
2594 for and destructors are always provided, due to quirks in v2
2595 mangling) and routines whose physname does not appear to be a
2596 destructor. If so then we break up the list into two halves.
2597 Even if the constructors and destructors aren't in the same group
2598 the destructor will still lack the leading tilde, so that also
2601 So, to summarize what we expect and handle here:
2603 Given Given Real Real Action
2604 method name physname physname method name
2606 __opi [none] __opi__3Foo operator int opname
2608 Foo _._3Foo _._3Foo ~Foo separate and
2610 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2611 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2614 tmp_sublist
= sublist
;
2615 while (tmp_sublist
!= NULL
)
2617 if (tmp_sublist
->fn_field
.is_stub
)
2619 if (tmp_sublist
->fn_field
.physname
[0] == '_'
2620 && tmp_sublist
->fn_field
.physname
[1] == 'Z')
2623 if (is_destructor_name (tmp_sublist
->fn_field
.physname
))
2628 tmp_sublist
= tmp_sublist
->next
;
2631 if (has_destructor
&& has_other
)
2633 struct next_fnfieldlist
*destr_fnlist
;
2634 struct next_fnfield
*last_sublist
;
2636 /* Create a new fn_fieldlist for the destructors. */
2638 destr_fnlist
= (struct next_fnfieldlist
*)
2639 xmalloc (sizeof (struct next_fnfieldlist
));
2640 make_cleanup (xfree
, destr_fnlist
);
2641 memset (destr_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2642 destr_fnlist
->fn_fieldlist
.name
2643 = obconcat (&objfile
->objfile_obstack
, "~",
2644 new_fnlist
->fn_fieldlist
.name
, (char *) NULL
);
2646 destr_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2647 obstack_alloc (&objfile
->objfile_obstack
,
2648 sizeof (struct fn_field
) * has_destructor
);
2649 memset (destr_fnlist
->fn_fieldlist
.fn_fields
, 0,
2650 sizeof (struct fn_field
) * has_destructor
);
2651 tmp_sublist
= sublist
;
2652 last_sublist
= NULL
;
2654 while (tmp_sublist
!= NULL
)
2656 if (!is_destructor_name (tmp_sublist
->fn_field
.physname
))
2658 tmp_sublist
= tmp_sublist
->next
;
2662 destr_fnlist
->fn_fieldlist
.fn_fields
[i
++]
2663 = tmp_sublist
->fn_field
;
2665 last_sublist
->next
= tmp_sublist
->next
;
2667 sublist
= tmp_sublist
->next
;
2668 last_sublist
= tmp_sublist
;
2669 tmp_sublist
= tmp_sublist
->next
;
2672 destr_fnlist
->fn_fieldlist
.length
= has_destructor
;
2673 destr_fnlist
->next
= fip
->fnlist
;
2674 fip
->fnlist
= destr_fnlist
;
2676 length
-= has_destructor
;
2680 /* v3 mangling prevents the use of abbreviated physnames,
2681 so we can do this here. There are stubbed methods in v3
2683 - in -gstabs instead of -gstabs+
2684 - or for static methods, which are output as a function type
2685 instead of a method type. */
2686 char *new_method_name
=
2687 stabs_method_name_from_physname (sublist
->fn_field
.physname
);
2689 if (new_method_name
!= NULL
2690 && strcmp (new_method_name
,
2691 new_fnlist
->fn_fieldlist
.name
) != 0)
2693 new_fnlist
->fn_fieldlist
.name
= new_method_name
;
2694 xfree (main_fn_name
);
2697 xfree (new_method_name
);
2699 else if (has_destructor
&& new_fnlist
->fn_fieldlist
.name
[0] != '~')
2701 new_fnlist
->fn_fieldlist
.name
=
2702 obconcat (&objfile
->objfile_obstack
,
2703 "~", main_fn_name
, (char *)NULL
);
2704 xfree (main_fn_name
);
2708 char dem_opname
[256];
2711 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2712 dem_opname
, DMGL_ANSI
);
2714 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2717 new_fnlist
->fn_fieldlist
.name
2718 = obstack_copy0 (&objfile
->objfile_obstack
,
2719 dem_opname
, strlen (dem_opname
));
2720 xfree (main_fn_name
);
2723 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2724 obstack_alloc (&objfile
->objfile_obstack
,
2725 sizeof (struct fn_field
) * length
);
2726 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
2727 sizeof (struct fn_field
) * length
);
2728 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
2730 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
2733 new_fnlist
->fn_fieldlist
.length
= length
;
2734 new_fnlist
->next
= fip
->fnlist
;
2735 fip
->fnlist
= new_fnlist
;
2742 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2743 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2744 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2745 memset (TYPE_FN_FIELDLISTS (type
), 0,
2746 sizeof (struct fn_fieldlist
) * nfn_fields
);
2747 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2753 /* Special GNU C++ name.
2755 Returns 1 for success, 0 for failure. "failure" means that we can't
2756 keep parsing and it's time for error_type(). */
2759 read_cpp_abbrev (struct field_info
*fip
, char **pp
, struct type
*type
,
2760 struct objfile
*objfile
)
2765 struct type
*context
;
2775 /* At this point, *pp points to something like "22:23=*22...",
2776 where the type number before the ':' is the "context" and
2777 everything after is a regular type definition. Lookup the
2778 type, find it's name, and construct the field name. */
2780 context
= read_type (pp
, objfile
);
2784 case 'f': /* $vf -- a virtual function table pointer */
2785 name
= type_name_no_tag (context
);
2790 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
,
2791 vptr_name
, name
, (char *) NULL
);
2794 case 'b': /* $vb -- a virtual bsomethingorother */
2795 name
= type_name_no_tag (context
);
2798 complaint (&symfile_complaints
,
2799 _("C++ abbreviated type name "
2800 "unknown at symtab pos %d"),
2804 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
, vb_name
,
2805 name
, (char *) NULL
);
2809 invalid_cpp_abbrev_complaint (*pp
);
2810 fip
->list
->field
.name
= obconcat (&objfile
->objfile_obstack
,
2811 "INVALID_CPLUSPLUS_ABBREV",
2816 /* At this point, *pp points to the ':'. Skip it and read the
2822 invalid_cpp_abbrev_complaint (*pp
);
2825 fip
->list
->field
.type
= read_type (pp
, objfile
);
2827 (*pp
)++; /* Skip the comma. */
2834 SET_FIELD_BITPOS (fip
->list
->field
,
2835 read_huge_number (pp
, ';', &nbits
, 0));
2839 /* This field is unpacked. */
2840 FIELD_BITSIZE (fip
->list
->field
) = 0;
2841 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2845 invalid_cpp_abbrev_complaint (*pp
);
2846 /* We have no idea what syntax an unrecognized abbrev would have, so
2847 better return 0. If we returned 1, we would need to at least advance
2848 *pp to avoid an infinite loop. */
2855 read_one_struct_field (struct field_info
*fip
, char **pp
, char *p
,
2856 struct type
*type
, struct objfile
*objfile
)
2858 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2860 fip
->list
->field
.name
=
2861 obstack_copy0 (&objfile
->objfile_obstack
, *pp
, p
- *pp
);
2864 /* This means we have a visibility for a field coming. */
2868 fip
->list
->visibility
= *(*pp
)++;
2872 /* normal dbx-style format, no explicit visibility */
2873 fip
->list
->visibility
= VISIBILITY_PUBLIC
;
2876 fip
->list
->field
.type
= read_type (pp
, objfile
);
2881 /* Possible future hook for nested types. */
2884 fip
->list
->field
.bitpos
= (long) -2; /* nested type */
2894 /* Static class member. */
2895 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (*pp
, p
- *pp
));
2899 else if (**pp
!= ',')
2901 /* Bad structure-type format. */
2902 stabs_general_complaint ("bad structure-type format");
2906 (*pp
)++; /* Skip the comma. */
2911 SET_FIELD_BITPOS (fip
->list
->field
,
2912 read_huge_number (pp
, ',', &nbits
, 0));
2915 stabs_general_complaint ("bad structure-type format");
2918 FIELD_BITSIZE (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
, 0);
2921 stabs_general_complaint ("bad structure-type format");
2926 if (FIELD_BITPOS (fip
->list
->field
) == 0
2927 && FIELD_BITSIZE (fip
->list
->field
) == 0)
2929 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2930 it is a field which has been optimized out. The correct stab for
2931 this case is to use VISIBILITY_IGNORE, but that is a recent
2932 invention. (2) It is a 0-size array. For example
2933 union { int num; char str[0]; } foo. Printing _("<no value>" for
2934 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2935 will continue to work, and a 0-size array as a whole doesn't
2936 have any contents to print.
2938 I suspect this probably could also happen with gcc -gstabs (not
2939 -gstabs+) for static fields, and perhaps other C++ extensions.
2940 Hopefully few people use -gstabs with gdb, since it is intended
2941 for dbx compatibility. */
2943 /* Ignore this field. */
2944 fip
->list
->visibility
= VISIBILITY_IGNORE
;
2948 /* Detect an unpacked field and mark it as such.
2949 dbx gives a bit size for all fields.
2950 Note that forward refs cannot be packed,
2951 and treat enums as if they had the width of ints. */
2953 struct type
*field_type
= check_typedef (FIELD_TYPE (fip
->list
->field
));
2955 if (TYPE_CODE (field_type
) != TYPE_CODE_INT
2956 && TYPE_CODE (field_type
) != TYPE_CODE_RANGE
2957 && TYPE_CODE (field_type
) != TYPE_CODE_BOOL
2958 && TYPE_CODE (field_type
) != TYPE_CODE_ENUM
)
2960 FIELD_BITSIZE (fip
->list
->field
) = 0;
2962 if ((FIELD_BITSIZE (fip
->list
->field
)
2963 == TARGET_CHAR_BIT
* TYPE_LENGTH (field_type
)
2964 || (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
2965 && FIELD_BITSIZE (fip
->list
->field
)
2966 == gdbarch_int_bit (gdbarch
))
2969 FIELD_BITPOS (fip
->list
->field
) % 8 == 0)
2971 FIELD_BITSIZE (fip
->list
->field
) = 0;
2977 /* Read struct or class data fields. They have the form:
2979 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2981 At the end, we see a semicolon instead of a field.
2983 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2986 The optional VISIBILITY is one of:
2988 '/0' (VISIBILITY_PRIVATE)
2989 '/1' (VISIBILITY_PROTECTED)
2990 '/2' (VISIBILITY_PUBLIC)
2991 '/9' (VISIBILITY_IGNORE)
2993 or nothing, for C style fields with public visibility.
2995 Returns 1 for success, 0 for failure. */
2998 read_struct_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
2999 struct objfile
*objfile
)
3002 struct nextfield
*new;
3004 /* We better set p right now, in case there are no fields at all... */
3008 /* Read each data member type until we find the terminating ';' at the end of
3009 the data member list, or break for some other reason such as finding the
3010 start of the member function list. */
3011 /* Stab string for structure/union does not end with two ';' in
3012 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
3014 while (**pp
!= ';' && **pp
!= '\0')
3016 STABS_CONTINUE (pp
, objfile
);
3017 /* Get space to record the next field's data. */
3018 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3019 make_cleanup (xfree
, new);
3020 memset (new, 0, sizeof (struct nextfield
));
3021 new->next
= fip
->list
;
3024 /* Get the field name. */
3027 /* If is starts with CPLUS_MARKER it is a special abbreviation,
3028 unless the CPLUS_MARKER is followed by an underscore, in
3029 which case it is just the name of an anonymous type, which we
3030 should handle like any other type name. */
3032 if (is_cplus_marker (p
[0]) && p
[1] != '_')
3034 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
3039 /* Look for the ':' that separates the field name from the field
3040 values. Data members are delimited by a single ':', while member
3041 functions are delimited by a pair of ':'s. When we hit the member
3042 functions (if any), terminate scan loop and return. */
3044 while (*p
!= ':' && *p
!= '\0')
3051 /* Check to see if we have hit the member functions yet. */
3056 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
3058 if (p
[0] == ':' && p
[1] == ':')
3060 /* (the deleted) chill the list of fields: the last entry (at
3061 the head) is a partially constructed entry which we now
3063 fip
->list
= fip
->list
->next
;
3068 /* The stabs for C++ derived classes contain baseclass information which
3069 is marked by a '!' character after the total size. This function is
3070 called when we encounter the baseclass marker, and slurps up all the
3071 baseclass information.
3073 Immediately following the '!' marker is the number of base classes that
3074 the class is derived from, followed by information for each base class.
3075 For each base class, there are two visibility specifiers, a bit offset
3076 to the base class information within the derived class, a reference to
3077 the type for the base class, and a terminating semicolon.
3079 A typical example, with two base classes, would be "!2,020,19;0264,21;".
3081 Baseclass information marker __________________|| | | | | | |
3082 Number of baseclasses __________________________| | | | | | |
3083 Visibility specifiers (2) ________________________| | | | | |
3084 Offset in bits from start of class _________________| | | | |
3085 Type number for base class ___________________________| | | |
3086 Visibility specifiers (2) _______________________________| | |
3087 Offset in bits from start of class ________________________| |
3088 Type number of base class ____________________________________|
3090 Return 1 for success, 0 for (error-type-inducing) failure. */
3096 read_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
3097 struct objfile
*objfile
)
3100 struct nextfield
*new;
3108 /* Skip the '!' baseclass information marker. */
3112 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3116 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
, 0);
3122 /* Some stupid compilers have trouble with the following, so break
3123 it up into simpler expressions. */
3124 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
3125 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
3128 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
3131 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
3132 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
3136 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
3138 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
3140 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3141 make_cleanup (xfree
, new);
3142 memset (new, 0, sizeof (struct nextfield
));
3143 new->next
= fip
->list
;
3145 FIELD_BITSIZE (new->field
) = 0; /* This should be an unpacked
3148 STABS_CONTINUE (pp
, objfile
);
3152 /* Nothing to do. */
3155 SET_TYPE_FIELD_VIRTUAL (type
, i
);
3158 /* Unknown character. Complain and treat it as non-virtual. */
3160 complaint (&symfile_complaints
,
3161 _("Unknown virtual character `%c' for baseclass"),
3167 new->visibility
= *(*pp
)++;
3168 switch (new->visibility
)
3170 case VISIBILITY_PRIVATE
:
3171 case VISIBILITY_PROTECTED
:
3172 case VISIBILITY_PUBLIC
:
3175 /* Bad visibility format. Complain and treat it as
3178 complaint (&symfile_complaints
,
3179 _("Unknown visibility `%c' for baseclass"),
3181 new->visibility
= VISIBILITY_PUBLIC
;
3188 /* The remaining value is the bit offset of the portion of the object
3189 corresponding to this baseclass. Always zero in the absence of
3190 multiple inheritance. */
3192 SET_FIELD_BITPOS (new->field
, read_huge_number (pp
, ',', &nbits
, 0));
3197 /* The last piece of baseclass information is the type of the
3198 base class. Read it, and remember it's type name as this
3201 new->field
.type
= read_type (pp
, objfile
);
3202 new->field
.name
= type_name_no_tag (new->field
.type
);
3204 /* Skip trailing ';' and bump count of number of fields seen. */
3213 /* The tail end of stabs for C++ classes that contain a virtual function
3214 pointer contains a tilde, a %, and a type number.
3215 The type number refers to the base class (possibly this class itself) which
3216 contains the vtable pointer for the current class.
3218 This function is called when we have parsed all the method declarations,
3219 so we can look for the vptr base class info. */
3222 read_tilde_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3223 struct objfile
*objfile
)
3227 STABS_CONTINUE (pp
, objfile
);
3229 /* If we are positioned at a ';', then skip it. */
3239 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
3241 /* Obsolete flags that used to indicate the presence
3242 of constructors and/or destructors. */
3246 /* Read either a '%' or the final ';'. */
3247 if (*(*pp
)++ == '%')
3249 /* The next number is the type number of the base class
3250 (possibly our own class) which supplies the vtable for
3251 this class. Parse it out, and search that class to find
3252 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3253 and TYPE_VPTR_FIELDNO. */
3258 t
= read_type (pp
, objfile
);
3260 while (*p
!= '\0' && *p
!= ';')
3266 /* Premature end of symbol. */
3270 set_type_vptr_basetype (type
, t
);
3271 if (type
== t
) /* Our own class provides vtbl ptr. */
3273 for (i
= TYPE_NFIELDS (t
) - 1;
3274 i
>= TYPE_N_BASECLASSES (t
);
3277 const char *name
= TYPE_FIELD_NAME (t
, i
);
3279 if (!strncmp (name
, vptr_name
, sizeof (vptr_name
) - 2)
3280 && is_cplus_marker (name
[sizeof (vptr_name
) - 2]))
3282 set_type_vptr_fieldno (type
, i
);
3286 /* Virtual function table field not found. */
3287 complaint (&symfile_complaints
,
3288 _("virtual function table pointer "
3289 "not found when defining class `%s'"),
3295 set_type_vptr_fieldno (type
, TYPE_VPTR_FIELDNO (t
));
3306 attach_fn_fields_to_type (struct field_info
*fip
, struct type
*type
)
3310 for (n
= TYPE_NFN_FIELDS (type
);
3311 fip
->fnlist
!= NULL
;
3312 fip
->fnlist
= fip
->fnlist
->next
)
3314 --n
; /* Circumvent Sun3 compiler bug. */
3315 TYPE_FN_FIELDLISTS (type
)[n
] = fip
->fnlist
->fn_fieldlist
;
3320 /* Create the vector of fields, and record how big it is.
3321 We need this info to record proper virtual function table information
3322 for this class's virtual functions. */
3325 attach_fields_to_type (struct field_info
*fip
, struct type
*type
,
3326 struct objfile
*objfile
)
3329 int non_public_fields
= 0;
3330 struct nextfield
*scan
;
3332 /* Count up the number of fields that we have, as well as taking note of
3333 whether or not there are any non-public fields, which requires us to
3334 allocate and build the private_field_bits and protected_field_bits
3337 for (scan
= fip
->list
; scan
!= NULL
; scan
= scan
->next
)
3340 if (scan
->visibility
!= VISIBILITY_PUBLIC
)
3342 non_public_fields
++;
3346 /* Now we know how many fields there are, and whether or not there are any
3347 non-public fields. Record the field count, allocate space for the
3348 array of fields, and create blank visibility bitfields if necessary. */
3350 TYPE_NFIELDS (type
) = nfields
;
3351 TYPE_FIELDS (type
) = (struct field
*)
3352 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
3353 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
3355 if (non_public_fields
)
3357 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3359 TYPE_FIELD_PRIVATE_BITS (type
) =
3360 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3361 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
3363 TYPE_FIELD_PROTECTED_BITS (type
) =
3364 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3365 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
3367 TYPE_FIELD_IGNORE_BITS (type
) =
3368 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3369 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
3372 /* Copy the saved-up fields into the field vector. Start from the
3373 head of the list, adding to the tail of the field array, so that
3374 they end up in the same order in the array in which they were
3375 added to the list. */
3377 while (nfields
-- > 0)
3379 TYPE_FIELD (type
, nfields
) = fip
->list
->field
;
3380 switch (fip
->list
->visibility
)
3382 case VISIBILITY_PRIVATE
:
3383 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
3386 case VISIBILITY_PROTECTED
:
3387 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
3390 case VISIBILITY_IGNORE
:
3391 SET_TYPE_FIELD_IGNORE (type
, nfields
);
3394 case VISIBILITY_PUBLIC
:
3398 /* Unknown visibility. Complain and treat it as public. */
3400 complaint (&symfile_complaints
,
3401 _("Unknown visibility `%c' for field"),
3402 fip
->list
->visibility
);
3406 fip
->list
= fip
->list
->next
;
3412 /* Complain that the compiler has emitted more than one definition for the
3413 structure type TYPE. */
3415 complain_about_struct_wipeout (struct type
*type
)
3417 const char *name
= "";
3418 const char *kind
= "";
3420 if (TYPE_TAG_NAME (type
))
3422 name
= TYPE_TAG_NAME (type
);
3423 switch (TYPE_CODE (type
))
3425 case TYPE_CODE_STRUCT
: kind
= "struct "; break;
3426 case TYPE_CODE_UNION
: kind
= "union "; break;
3427 case TYPE_CODE_ENUM
: kind
= "enum "; break;
3431 else if (TYPE_NAME (type
))
3433 name
= TYPE_NAME (type
);
3442 complaint (&symfile_complaints
,
3443 _("struct/union type gets multiply defined: %s%s"), kind
, name
);
3446 /* Set the length for all variants of a same main_type, which are
3447 connected in the closed chain.
3449 This is something that needs to be done when a type is defined *after*
3450 some cross references to this type have already been read. Consider
3451 for instance the following scenario where we have the following two
3454 .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24
3455 .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]"
3457 A stubbed version of type dummy is created while processing the first
3458 stabs entry. The length of that type is initially set to zero, since
3459 it is unknown at this point. Also, a "constant" variation of type
3460 "dummy" is created as well (this is the "(0,22)=k(0,23)" section of
3463 The second stabs entry allows us to replace the stubbed definition
3464 with the real definition. However, we still need to adjust the length
3465 of the "constant" variation of that type, as its length was left
3466 untouched during the main type replacement... */
3469 set_length_in_type_chain (struct type
*type
)
3471 struct type
*ntype
= TYPE_CHAIN (type
);
3473 while (ntype
!= type
)
3475 if (TYPE_LENGTH(ntype
) == 0)
3476 TYPE_LENGTH (ntype
) = TYPE_LENGTH (type
);
3478 complain_about_struct_wipeout (ntype
);
3479 ntype
= TYPE_CHAIN (ntype
);
3483 /* Read the description of a structure (or union type) and return an object
3484 describing the type.
3486 PP points to a character pointer that points to the next unconsumed token
3487 in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3488 *PP will point to "4a:1,0,32;;".
3490 TYPE points to an incomplete type that needs to be filled in.
3492 OBJFILE points to the current objfile from which the stabs information is
3493 being read. (Note that it is redundant in that TYPE also contains a pointer
3494 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3497 static struct type
*
3498 read_struct_type (char **pp
, struct type
*type
, enum type_code type_code
,
3499 struct objfile
*objfile
)
3501 struct cleanup
*back_to
;
3502 struct field_info fi
;
3507 /* When describing struct/union/class types in stabs, G++ always drops
3508 all qualifications from the name. So if you've got:
3509 struct A { ... struct B { ... }; ... };
3510 then G++ will emit stabs for `struct A::B' that call it simply
3511 `struct B'. Obviously, if you've got a real top-level definition for
3512 `struct B', or other nested definitions, this is going to cause
3515 Obviously, GDB can't fix this by itself, but it can at least avoid
3516 scribbling on existing structure type objects when new definitions
3518 if (! (TYPE_CODE (type
) == TYPE_CODE_UNDEF
3519 || TYPE_STUB (type
)))
3521 complain_about_struct_wipeout (type
);
3523 /* It's probably best to return the type unchanged. */
3527 back_to
= make_cleanup (null_cleanup
, 0);
3529 INIT_CPLUS_SPECIFIC (type
);
3530 TYPE_CODE (type
) = type_code
;
3531 TYPE_STUB (type
) = 0;
3533 /* First comes the total size in bytes. */
3538 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
, 0);
3541 do_cleanups (back_to
);
3542 return error_type (pp
, objfile
);
3544 set_length_in_type_chain (type
);
3547 /* Now read the baseclasses, if any, read the regular C struct or C++
3548 class member fields, attach the fields to the type, read the C++
3549 member functions, attach them to the type, and then read any tilde
3550 field (baseclass specifier for the class holding the main vtable). */
3552 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
3553 || !read_struct_fields (&fi
, pp
, type
, objfile
)
3554 || !attach_fields_to_type (&fi
, type
, objfile
)
3555 || !read_member_functions (&fi
, pp
, type
, objfile
)
3556 || !attach_fn_fields_to_type (&fi
, type
)
3557 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
3559 type
= error_type (pp
, objfile
);
3562 do_cleanups (back_to
);
3566 /* Read a definition of an array type,
3567 and create and return a suitable type object.
3568 Also creates a range type which represents the bounds of that
3571 static struct type
*
3572 read_array_type (char **pp
, struct type
*type
,
3573 struct objfile
*objfile
)
3575 struct type
*index_type
, *element_type
, *range_type
;
3580 /* Format of an array type:
3581 "ar<index type>;lower;upper;<array_contents_type>".
3582 OS9000: "arlower,upper;<array_contents_type>".
3584 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3585 for these, produce a type like float[][]. */
3588 index_type
= read_type (pp
, objfile
);
3590 /* Improper format of array type decl. */
3591 return error_type (pp
, objfile
);
3595 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3600 lower
= read_huge_number (pp
, ';', &nbits
, 0);
3603 return error_type (pp
, objfile
);
3605 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3610 upper
= read_huge_number (pp
, ';', &nbits
, 0);
3612 return error_type (pp
, objfile
);
3614 element_type
= read_type (pp
, objfile
);
3623 create_static_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3624 type
= create_array_type (type
, element_type
, range_type
);
3630 /* Read a definition of an enumeration type,
3631 and create and return a suitable type object.
3632 Also defines the symbols that represent the values of the type. */
3634 static struct type
*
3635 read_enum_type (char **pp
, struct type
*type
,
3636 struct objfile
*objfile
)
3638 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3644 struct pending
**symlist
;
3645 struct pending
*osyms
, *syms
;
3648 int unsigned_enum
= 1;
3651 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3652 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3653 to do? For now, force all enum values to file scope. */
3654 if (within_function
)
3655 symlist
= &local_symbols
;
3658 symlist
= &file_symbols
;
3660 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3662 /* The aix4 compiler emits an extra field before the enum members;
3663 my guess is it's a type of some sort. Just ignore it. */
3666 /* Skip over the type. */
3670 /* Skip over the colon. */
3674 /* Read the value-names and their values.
3675 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3676 A semicolon or comma instead of a NAME means the end. */
3677 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3679 STABS_CONTINUE (pp
, objfile
);
3683 name
= obstack_copy0 (&objfile
->objfile_obstack
, *pp
, p
- *pp
);
3685 n
= read_huge_number (pp
, ',', &nbits
, 0);
3687 return error_type (pp
, objfile
);
3689 sym
= allocate_symbol (objfile
);
3690 SYMBOL_SET_LINKAGE_NAME (sym
, name
);
3691 SYMBOL_SET_LANGUAGE (sym
, current_subfile
->language
,
3692 &objfile
->objfile_obstack
);
3693 SYMBOL_ACLASS_INDEX (sym
) = LOC_CONST
;
3694 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
3695 SYMBOL_VALUE (sym
) = n
;
3698 add_symbol_to_list (sym
, symlist
);
3703 (*pp
)++; /* Skip the semicolon. */
3705 /* Now fill in the fields of the type-structure. */
3707 TYPE_LENGTH (type
) = gdbarch_int_bit (gdbarch
) / HOST_CHAR_BIT
;
3708 set_length_in_type_chain (type
);
3709 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3710 TYPE_STUB (type
) = 0;
3712 TYPE_UNSIGNED (type
) = 1;
3713 TYPE_NFIELDS (type
) = nsyms
;
3714 TYPE_FIELDS (type
) = (struct field
*)
3715 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3716 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3718 /* Find the symbols for the values and put them into the type.
3719 The symbols can be found in the symlist that we put them on
3720 to cause them to be defined. osyms contains the old value
3721 of that symlist; everything up to there was defined by us. */
3722 /* Note that we preserve the order of the enum constants, so
3723 that in something like "enum {FOO, LAST_THING=FOO}" we print
3724 FOO, not LAST_THING. */
3726 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3728 int last
= syms
== osyms
? o_nsyms
: 0;
3729 int j
= syms
->nsyms
;
3731 for (; --j
>= last
; --n
)
3733 struct symbol
*xsym
= syms
->symbol
[j
];
3735 SYMBOL_TYPE (xsym
) = type
;
3736 TYPE_FIELD_NAME (type
, n
) = SYMBOL_LINKAGE_NAME (xsym
);
3737 SET_FIELD_ENUMVAL (TYPE_FIELD (type
, n
), SYMBOL_VALUE (xsym
));
3738 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3747 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3748 typedefs in every file (for int, long, etc):
3750 type = b <signed> <width> <format type>; <offset>; <nbits>
3752 optional format type = c or b for char or boolean.
3753 offset = offset from high order bit to start bit of type.
3754 width is # bytes in object of this type, nbits is # bits in type.
3756 The width/offset stuff appears to be for small objects stored in
3757 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3760 static struct type
*
3761 read_sun_builtin_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3766 enum type_code code
= TYPE_CODE_INT
;
3777 return error_type (pp
, objfile
);
3781 /* For some odd reason, all forms of char put a c here. This is strange
3782 because no other type has this honor. We can safely ignore this because
3783 we actually determine 'char'acterness by the number of bits specified in
3785 Boolean forms, e.g Fortran logical*X, put a b here. */
3789 else if (**pp
== 'b')
3791 code
= TYPE_CODE_BOOL
;
3795 /* The first number appears to be the number of bytes occupied
3796 by this type, except that unsigned short is 4 instead of 2.
3797 Since this information is redundant with the third number,
3798 we will ignore it. */
3799 read_huge_number (pp
, ';', &nbits
, 0);
3801 return error_type (pp
, objfile
);
3803 /* The second number is always 0, so ignore it too. */
3804 read_huge_number (pp
, ';', &nbits
, 0);
3806 return error_type (pp
, objfile
);
3808 /* The third number is the number of bits for this type. */
3809 type_bits
= read_huge_number (pp
, 0, &nbits
, 0);
3811 return error_type (pp
, objfile
);
3812 /* The type *should* end with a semicolon. If it are embedded
3813 in a larger type the semicolon may be the only way to know where
3814 the type ends. If this type is at the end of the stabstring we
3815 can deal with the omitted semicolon (but we don't have to like
3816 it). Don't bother to complain(), Sun's compiler omits the semicolon
3822 return init_type (TYPE_CODE_VOID
, 1,
3823 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3826 return init_type (code
,
3827 type_bits
/ TARGET_CHAR_BIT
,
3828 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3832 static struct type
*
3833 read_sun_floating_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3838 struct type
*rettype
;
3840 /* The first number has more details about the type, for example
3842 details
= read_huge_number (pp
, ';', &nbits
, 0);
3844 return error_type (pp
, objfile
);
3846 /* The second number is the number of bytes occupied by this type. */
3847 nbytes
= read_huge_number (pp
, ';', &nbits
, 0);
3849 return error_type (pp
, objfile
);
3851 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3852 || details
== NF_COMPLEX32
)
3854 rettype
= init_type (TYPE_CODE_COMPLEX
, nbytes
, 0, NULL
, objfile
);
3855 TYPE_TARGET_TYPE (rettype
)
3856 = init_type (TYPE_CODE_FLT
, nbytes
/ 2, 0, NULL
, objfile
);
3860 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3863 /* Read a number from the string pointed to by *PP.
3864 The value of *PP is advanced over the number.
3865 If END is nonzero, the character that ends the
3866 number must match END, or an error happens;
3867 and that character is skipped if it does match.
3868 If END is zero, *PP is left pointing to that character.
3870 If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if
3871 the number is represented in an octal representation, assume that
3872 it is represented in a 2's complement representation with a size of
3873 TWOS_COMPLEMENT_BITS.
3875 If the number fits in a long, set *BITS to 0 and return the value.
3876 If not, set *BITS to be the number of bits in the number and return 0.
3878 If encounter garbage, set *BITS to -1 and return 0. */
3881 read_huge_number (char **pp
, int end
, int *bits
, int twos_complement_bits
)
3892 int twos_complement_representation
= 0;
3900 /* Leading zero means octal. GCC uses this to output values larger
3901 than an int (because that would be hard in decimal). */
3908 /* Skip extra zeros. */
3912 if (sign
> 0 && radix
== 8 && twos_complement_bits
> 0)
3914 /* Octal, possibly signed. Check if we have enough chars for a
3920 while ((c
= *p1
) >= '0' && c
< '8')
3924 if (len
> twos_complement_bits
/ 3
3925 || (twos_complement_bits
% 3 == 0
3926 && len
== twos_complement_bits
/ 3))
3928 /* Ok, we have enough characters for a signed value, check
3929 for signness by testing if the sign bit is set. */
3930 sign_bit
= (twos_complement_bits
% 3 + 2) % 3;
3932 if (c
& (1 << sign_bit
))
3934 /* Definitely signed. */
3935 twos_complement_representation
= 1;
3941 upper_limit
= LONG_MAX
/ radix
;
3943 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3945 if (n
<= upper_limit
)
3947 if (twos_complement_representation
)
3949 /* Octal, signed, twos complement representation. In
3950 this case, n is the corresponding absolute value. */
3953 long sn
= c
- '0' - ((2 * (c
- '0')) | (2 << sign_bit
));
3965 /* unsigned representation */
3967 n
+= c
- '0'; /* FIXME this overflows anyway. */
3973 /* This depends on large values being output in octal, which is
3980 /* Ignore leading zeroes. */
3984 else if (c
== '2' || c
== '3')
4005 if (radix
== 8 && twos_complement_bits
> 0 && nbits
> twos_complement_bits
)
4007 /* We were supposed to parse a number with maximum
4008 TWOS_COMPLEMENT_BITS bits, but something went wrong. */
4019 /* Large decimal constants are an error (because it is hard to
4020 count how many bits are in them). */
4026 /* -0x7f is the same as 0x80. So deal with it by adding one to
4027 the number of bits. Two's complement represention octals
4028 can't have a '-' in front. */
4029 if (sign
== -1 && !twos_complement_representation
)
4040 /* It's *BITS which has the interesting information. */
4044 static struct type
*
4045 read_range_type (char **pp
, int typenums
[2], int type_size
,
4046 struct objfile
*objfile
)
4048 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
4049 char *orig_pp
= *pp
;
4054 struct type
*result_type
;
4055 struct type
*index_type
= NULL
;
4057 /* First comes a type we are a subrange of.
4058 In C it is usually 0, 1 or the type being defined. */
4059 if (read_type_number (pp
, rangenums
) != 0)
4060 return error_type (pp
, objfile
);
4061 self_subrange
= (rangenums
[0] == typenums
[0] &&
4062 rangenums
[1] == typenums
[1]);
4067 index_type
= read_type (pp
, objfile
);
4070 /* A semicolon should now follow; skip it. */
4074 /* The remaining two operands are usually lower and upper bounds
4075 of the range. But in some special cases they mean something else. */
4076 n2
= read_huge_number (pp
, ';', &n2bits
, type_size
);
4077 n3
= read_huge_number (pp
, ';', &n3bits
, type_size
);
4079 if (n2bits
== -1 || n3bits
== -1)
4080 return error_type (pp
, objfile
);
4083 goto handle_true_range
;
4085 /* If limits are huge, must be large integral type. */
4086 if (n2bits
!= 0 || n3bits
!= 0)
4088 char got_signed
= 0;
4089 char got_unsigned
= 0;
4090 /* Number of bits in the type. */
4093 /* If a type size attribute has been specified, the bounds of
4094 the range should fit in this size. If the lower bounds needs
4095 more bits than the upper bound, then the type is signed. */
4096 if (n2bits
<= type_size
&& n3bits
<= type_size
)
4098 if (n2bits
== type_size
&& n2bits
> n3bits
)
4104 /* Range from 0 to <large number> is an unsigned large integral type. */
4105 else if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
4110 /* Range from <large number> to <large number>-1 is a large signed
4111 integral type. Take care of the case where <large number> doesn't
4112 fit in a long but <large number>-1 does. */
4113 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
4114 || (n2bits
!= 0 && n3bits
== 0
4115 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
4122 if (got_signed
|| got_unsigned
)
4124 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
4125 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
4129 return error_type (pp
, objfile
);
4132 /* A type defined as a subrange of itself, with bounds both 0, is void. */
4133 if (self_subrange
&& n2
== 0 && n3
== 0)
4134 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
4136 /* If n3 is zero and n2 is positive, we want a floating type, and n2
4137 is the width in bytes.
4139 Fortran programs appear to use this for complex types also. To
4140 distinguish between floats and complex, g77 (and others?) seem
4141 to use self-subranges for the complexes, and subranges of int for
4144 Also note that for complexes, g77 sets n2 to the size of one of
4145 the member floats, not the whole complex beast. My guess is that
4146 this was to work well with pre-COMPLEX versions of gdb. */
4148 if (n3
== 0 && n2
> 0)
4150 struct type
*float_type
4151 = init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
4155 struct type
*complex_type
=
4156 init_type (TYPE_CODE_COMPLEX
, 2 * n2
, 0, NULL
, objfile
);
4158 TYPE_TARGET_TYPE (complex_type
) = float_type
;
4159 return complex_type
;
4165 /* If the upper bound is -1, it must really be an unsigned integral. */
4167 else if (n2
== 0 && n3
== -1)
4169 int bits
= type_size
;
4173 /* We don't know its size. It is unsigned int or unsigned
4174 long. GCC 2.3.3 uses this for long long too, but that is
4175 just a GDB 3.5 compatibility hack. */
4176 bits
= gdbarch_int_bit (gdbarch
);
4179 return init_type (TYPE_CODE_INT
, bits
/ TARGET_CHAR_BIT
,
4180 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
4183 /* Special case: char is defined (Who knows why) as a subrange of
4184 itself with range 0-127. */
4185 else if (self_subrange
&& n2
== 0 && n3
== 127)
4186 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_NOSIGN
, NULL
, objfile
);
4188 /* We used to do this only for subrange of self or subrange of int. */
4191 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
4192 "unsigned long", and we already checked for that,
4193 so don't need to test for it here. */
4196 /* n3 actually gives the size. */
4197 return init_type (TYPE_CODE_INT
, -n3
, TYPE_FLAG_UNSIGNED
,
4200 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
4201 unsigned n-byte integer. But do require n to be a power of
4202 two; we don't want 3- and 5-byte integers flying around. */
4208 for (bytes
= 0; (bits
& 0xff) == 0xff; bytes
++)
4211 && ((bytes
- 1) & bytes
) == 0) /* "bytes is a power of two" */
4212 return init_type (TYPE_CODE_INT
, bytes
, TYPE_FLAG_UNSIGNED
, NULL
,
4216 /* I think this is for Convex "long long". Since I don't know whether
4217 Convex sets self_subrange, I also accept that particular size regardless
4218 of self_subrange. */
4219 else if (n3
== 0 && n2
< 0
4221 || n2
== -gdbarch_long_long_bit
4222 (gdbarch
) / TARGET_CHAR_BIT
))
4223 return init_type (TYPE_CODE_INT
, -n2
, 0, NULL
, objfile
);
4224 else if (n2
== -n3
- 1)
4227 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
4229 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
4230 if (n3
== 0x7fffffff)
4231 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
4234 /* We have a real range type on our hands. Allocate space and
4235 return a real pointer. */
4239 index_type
= objfile_type (objfile
)->builtin_int
;
4241 index_type
= *dbx_lookup_type (rangenums
, objfile
);
4242 if (index_type
== NULL
)
4244 /* Does this actually ever happen? Is that why we are worrying
4245 about dealing with it rather than just calling error_type? */
4247 complaint (&symfile_complaints
,
4248 _("base type %d of range type is not defined"), rangenums
[1]);
4250 index_type
= objfile_type (objfile
)->builtin_int
;
4254 = create_static_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
4255 return (result_type
);
4258 /* Read in an argument list. This is a list of types, separated by commas
4259 and terminated with END. Return the list of types read in, or NULL
4260 if there is an error. */
4262 static struct field
*
4263 read_args (char **pp
, int end
, struct objfile
*objfile
, int *nargsp
,
4266 /* FIXME! Remove this arbitrary limit! */
4267 struct type
*types
[1024]; /* Allow for fns of 1023 parameters. */
4274 /* Invalid argument list: no ','. */
4277 STABS_CONTINUE (pp
, objfile
);
4278 types
[n
++] = read_type (pp
, objfile
);
4280 (*pp
)++; /* get past `end' (the ':' character). */
4284 /* We should read at least the THIS parameter here. Some broken stabs
4285 output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should
4286 have been present ";-16,(0,43)" reference instead. This way the
4287 excessive ";" marker prematurely stops the parameters parsing. */
4289 complaint (&symfile_complaints
, _("Invalid (empty) method arguments"));
4292 else if (TYPE_CODE (types
[n
- 1]) != TYPE_CODE_VOID
)
4300 rval
= (struct field
*) xmalloc (n
* sizeof (struct field
));
4301 memset (rval
, 0, n
* sizeof (struct field
));
4302 for (i
= 0; i
< n
; i
++)
4303 rval
[i
].type
= types
[i
];
4308 /* Common block handling. */
4310 /* List of symbols declared since the last BCOMM. This list is a tail
4311 of local_symbols. When ECOMM is seen, the symbols on the list
4312 are noted so their proper addresses can be filled in later,
4313 using the common block base address gotten from the assembler
4316 static struct pending
*common_block
;
4317 static int common_block_i
;
4319 /* Name of the current common block. We get it from the BCOMM instead of the
4320 ECOMM to match IBM documentation (even though IBM puts the name both places
4321 like everyone else). */
4322 static char *common_block_name
;
4324 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4325 to remain after this function returns. */
4328 common_block_start (char *name
, struct objfile
*objfile
)
4330 if (common_block_name
!= NULL
)
4332 complaint (&symfile_complaints
,
4333 _("Invalid symbol data: common block within common block"));
4335 common_block
= local_symbols
;
4336 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
4337 common_block_name
= obstack_copy0 (&objfile
->objfile_obstack
,
4338 name
, strlen (name
));
4341 /* Process a N_ECOMM symbol. */
4344 common_block_end (struct objfile
*objfile
)
4346 /* Symbols declared since the BCOMM are to have the common block
4347 start address added in when we know it. common_block and
4348 common_block_i point to the first symbol after the BCOMM in
4349 the local_symbols list; copy the list and hang it off the
4350 symbol for the common block name for later fixup. */
4353 struct pending
*new = 0;
4354 struct pending
*next
;
4357 if (common_block_name
== NULL
)
4359 complaint (&symfile_complaints
, _("ECOMM symbol unmatched by BCOMM"));
4363 sym
= allocate_symbol (objfile
);
4364 /* Note: common_block_name already saved on objfile_obstack. */
4365 SYMBOL_SET_LINKAGE_NAME (sym
, common_block_name
);
4366 SYMBOL_ACLASS_INDEX (sym
) = LOC_BLOCK
;
4368 /* Now we copy all the symbols which have been defined since the BCOMM. */
4370 /* Copy all the struct pendings before common_block. */
4371 for (next
= local_symbols
;
4372 next
!= NULL
&& next
!= common_block
;
4375 for (j
= 0; j
< next
->nsyms
; j
++)
4376 add_symbol_to_list (next
->symbol
[j
], &new);
4379 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4380 NULL, it means copy all the local symbols (which we already did
4383 if (common_block
!= NULL
)
4384 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
4385 add_symbol_to_list (common_block
->symbol
[j
], &new);
4387 SYMBOL_TYPE (sym
) = (struct type
*) new;
4389 /* Should we be putting local_symbols back to what it was?
4392 i
= hashname (SYMBOL_LINKAGE_NAME (sym
));
4393 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
4394 global_sym_chain
[i
] = sym
;
4395 common_block_name
= NULL
;
4398 /* Add a common block's start address to the offset of each symbol
4399 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4400 the common block name). */
4403 fix_common_block (struct symbol
*sym
, CORE_ADDR valu
)
4405 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
4407 for (; next
; next
= next
->next
)
4411 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
4412 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
4418 /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector.
4419 See add_undefined_type for more details. */
4422 add_undefined_type_noname (struct type
*type
, int typenums
[2])
4426 nat
.typenums
[0] = typenums
[0];
4427 nat
.typenums
[1] = typenums
[1];
4430 if (noname_undefs_length
== noname_undefs_allocated
)
4432 noname_undefs_allocated
*= 2;
4433 noname_undefs
= (struct nat
*)
4434 xrealloc ((char *) noname_undefs
,
4435 noname_undefs_allocated
* sizeof (struct nat
));
4437 noname_undefs
[noname_undefs_length
++] = nat
;
4440 /* Add TYPE to the UNDEF_TYPES vector.
4441 See add_undefined_type for more details. */
4444 add_undefined_type_1 (struct type
*type
)
4446 if (undef_types_length
== undef_types_allocated
)
4448 undef_types_allocated
*= 2;
4449 undef_types
= (struct type
**)
4450 xrealloc ((char *) undef_types
,
4451 undef_types_allocated
* sizeof (struct type
*));
4453 undef_types
[undef_types_length
++] = type
;
4456 /* What about types defined as forward references inside of a small lexical
4458 /* Add a type to the list of undefined types to be checked through
4459 once this file has been read in.
4461 In practice, we actually maintain two such lists: The first list
4462 (UNDEF_TYPES) is used for types whose name has been provided, and
4463 concerns forward references (eg 'xs' or 'xu' forward references);
4464 the second list (NONAME_UNDEFS) is used for types whose name is
4465 unknown at creation time, because they were referenced through
4466 their type number before the actual type was declared.
4467 This function actually adds the given type to the proper list. */
4470 add_undefined_type (struct type
*type
, int typenums
[2])
4472 if (TYPE_TAG_NAME (type
) == NULL
)
4473 add_undefined_type_noname (type
, typenums
);
4475 add_undefined_type_1 (type
);
4478 /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */
4481 cleanup_undefined_types_noname (struct objfile
*objfile
)
4485 for (i
= 0; i
< noname_undefs_length
; i
++)
4487 struct nat nat
= noname_undefs
[i
];
4490 type
= dbx_lookup_type (nat
.typenums
, objfile
);
4491 if (nat
.type
!= *type
&& TYPE_CODE (*type
) != TYPE_CODE_UNDEF
)
4493 /* The instance flags of the undefined type are still unset,
4494 and needs to be copied over from the reference type.
4495 Since replace_type expects them to be identical, we need
4496 to set these flags manually before hand. */
4497 TYPE_INSTANCE_FLAGS (nat
.type
) = TYPE_INSTANCE_FLAGS (*type
);
4498 replace_type (nat
.type
, *type
);
4502 noname_undefs_length
= 0;
4505 /* Go through each undefined type, see if it's still undefined, and fix it
4506 up if possible. We have two kinds of undefined types:
4508 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4509 Fix: update array length using the element bounds
4510 and the target type's length.
4511 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4512 yet defined at the time a pointer to it was made.
4513 Fix: Do a full lookup on the struct/union tag. */
4516 cleanup_undefined_types_1 (void)
4520 /* Iterate over every undefined type, and look for a symbol whose type
4521 matches our undefined type. The symbol matches if:
4522 1. It is a typedef in the STRUCT domain;
4523 2. It has the same name, and same type code;
4524 3. The instance flags are identical.
4526 It is important to check the instance flags, because we have seen
4527 examples where the debug info contained definitions such as:
4529 "foo_t:t30=B31=xefoo_t:"
4531 In this case, we have created an undefined type named "foo_t" whose
4532 instance flags is null (when processing "xefoo_t"), and then created
4533 another type with the same name, but with different instance flags
4534 ('B' means volatile). I think that the definition above is wrong,
4535 since the same type cannot be volatile and non-volatile at the same
4536 time, but we need to be able to cope with it when it happens. The
4537 approach taken here is to treat these two types as different. */
4539 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
4541 switch (TYPE_CODE (*type
))
4544 case TYPE_CODE_STRUCT
:
4545 case TYPE_CODE_UNION
:
4546 case TYPE_CODE_ENUM
:
4548 /* Check if it has been defined since. Need to do this here
4549 as well as in check_typedef to deal with the (legitimate in
4550 C though not C++) case of several types with the same name
4551 in different source files. */
4552 if (TYPE_STUB (*type
))
4554 struct pending
*ppt
;
4556 /* Name of the type, without "struct" or "union". */
4557 const char *typename
= TYPE_TAG_NAME (*type
);
4559 if (typename
== NULL
)
4561 complaint (&symfile_complaints
, _("need a type name"));
4564 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
4566 for (i
= 0; i
< ppt
->nsyms
; i
++)
4568 struct symbol
*sym
= ppt
->symbol
[i
];
4570 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4571 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4572 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
4574 && (TYPE_INSTANCE_FLAGS (*type
) ==
4575 TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym
)))
4576 && strcmp (SYMBOL_LINKAGE_NAME (sym
),
4578 replace_type (*type
, SYMBOL_TYPE (sym
));
4587 complaint (&symfile_complaints
,
4588 _("forward-referenced types left unresolved, "
4596 undef_types_length
= 0;
4599 /* Try to fix all the undefined types we ecountered while processing
4603 cleanup_undefined_stabs_types (struct objfile
*objfile
)
4605 cleanup_undefined_types_1 ();
4606 cleanup_undefined_types_noname (objfile
);
4609 /* Scan through all of the global symbols defined in the object file,
4610 assigning values to the debugging symbols that need to be assigned
4611 to. Get these symbols from the minimal symbol table. */
4614 scan_file_globals (struct objfile
*objfile
)
4617 struct minimal_symbol
*msymbol
;
4618 struct symbol
*sym
, *prev
;
4619 struct objfile
*resolve_objfile
;
4621 /* SVR4 based linkers copy referenced global symbols from shared
4622 libraries to the main executable.
4623 If we are scanning the symbols for a shared library, try to resolve
4624 them from the minimal symbols of the main executable first. */
4626 if (symfile_objfile
&& objfile
!= symfile_objfile
)
4627 resolve_objfile
= symfile_objfile
;
4629 resolve_objfile
= objfile
;
4633 /* Avoid expensive loop through all minimal symbols if there are
4634 no unresolved symbols. */
4635 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4637 if (global_sym_chain
[hash
])
4640 if (hash
>= HASHSIZE
)
4643 ALL_OBJFILE_MSYMBOLS (resolve_objfile
, msymbol
)
4647 /* Skip static symbols. */
4648 switch (MSYMBOL_TYPE (msymbol
))
4660 /* Get the hash index and check all the symbols
4661 under that hash index. */
4663 hash
= hashname (MSYMBOL_LINKAGE_NAME (msymbol
));
4665 for (sym
= global_sym_chain
[hash
]; sym
;)
4667 if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol
),
4668 SYMBOL_LINKAGE_NAME (sym
)) == 0)
4670 /* Splice this symbol out of the hash chain and
4671 assign the value we have to it. */
4674 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
4678 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
4681 /* Check to see whether we need to fix up a common block. */
4682 /* Note: this code might be executed several times for
4683 the same symbol if there are multiple references. */
4686 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
4688 fix_common_block (sym
,
4689 MSYMBOL_VALUE_ADDRESS (resolve_objfile
,
4694 SYMBOL_VALUE_ADDRESS (sym
)
4695 = MSYMBOL_VALUE_ADDRESS (resolve_objfile
, msymbol
);
4697 SYMBOL_SECTION (sym
) = MSYMBOL_SECTION (msymbol
);
4702 sym
= SYMBOL_VALUE_CHAIN (prev
);
4706 sym
= global_sym_chain
[hash
];
4712 sym
= SYMBOL_VALUE_CHAIN (sym
);
4716 if (resolve_objfile
== objfile
)
4718 resolve_objfile
= objfile
;
4721 /* Change the storage class of any remaining unresolved globals to
4722 LOC_UNRESOLVED and remove them from the chain. */
4723 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4725 sym
= global_sym_chain
[hash
];
4729 sym
= SYMBOL_VALUE_CHAIN (sym
);
4731 /* Change the symbol address from the misleading chain value
4733 SYMBOL_VALUE_ADDRESS (prev
) = 0;
4735 /* Complain about unresolved common block symbols. */
4736 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
4737 SYMBOL_ACLASS_INDEX (prev
) = LOC_UNRESOLVED
;
4739 complaint (&symfile_complaints
,
4740 _("%s: common block `%s' from "
4741 "global_sym_chain unresolved"),
4742 objfile_name (objfile
), SYMBOL_PRINT_NAME (prev
));
4745 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4748 /* Initialize anything that needs initializing when starting to read
4749 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4753 stabsread_init (void)
4757 /* Initialize anything that needs initializing when a completely new
4758 symbol file is specified (not just adding some symbols from another
4759 file, e.g. a shared library). */
4762 stabsread_new_init (void)
4764 /* Empty the hash table of global syms looking for values. */
4765 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4768 /* Initialize anything that needs initializing at the same time as
4769 start_symtab() is called. */
4774 global_stabs
= NULL
; /* AIX COFF */
4775 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4776 n_this_object_header_files
= 1;
4777 type_vector_length
= 0;
4778 type_vector
= (struct type
**) 0;
4780 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4781 common_block_name
= NULL
;
4784 /* Call after end_symtab(). */
4791 xfree (type_vector
);
4794 type_vector_length
= 0;
4795 previous_stab_code
= 0;
4799 finish_global_stabs (struct objfile
*objfile
)
4803 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4804 xfree (global_stabs
);
4805 global_stabs
= NULL
;
4809 /* Find the end of the name, delimited by a ':', but don't match
4810 ObjC symbols which look like -[Foo bar::]:bla. */
4812 find_name_end (char *name
)
4816 if (s
[0] == '-' || *s
== '+')
4818 /* Must be an ObjC method symbol. */
4821 error (_("invalid symbol name \"%s\""), name
);
4823 s
= strchr (s
, ']');
4826 error (_("invalid symbol name \"%s\""), name
);
4828 return strchr (s
, ':');
4832 return strchr (s
, ':');
4836 /* Initializer for this module. */
4839 _initialize_stabsread (void)
4841 rs6000_builtin_type_data
= register_objfile_data ();
4843 undef_types_allocated
= 20;
4844 undef_types_length
= 0;
4845 undef_types
= (struct type
**)
4846 xmalloc (undef_types_allocated
* sizeof (struct type
*));
4848 noname_undefs_allocated
= 20;
4849 noname_undefs_length
= 0;
4850 noname_undefs
= (struct nat
*)
4851 xmalloc (noname_undefs_allocated
* sizeof (struct nat
));
4853 stab_register_index
= register_symbol_register_impl (LOC_REGISTER
,
4854 &stab_register_funcs
);
4855 stab_regparm_index
= register_symbol_register_impl (LOC_REGPARM_ADDR
,
4856 &stab_register_funcs
);