1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Support routines for reading and decoding debugging information in
24 the "stabs" format. This format is used with many systems that use
25 the a.out object file format, as well as some systems that use
26 COFF or ELF where the stabs data is placed in a special section.
27 Avoid placing any object file format specific code in this file. */
30 #include "gdb_string.h"
32 #include "gdb_obstack.h"
35 #include "expression.h"
38 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
40 #include "aout/aout64.h"
41 #include "gdb-stabs.h"
43 #include "complaints.h"
48 #include "cp-support.h"
52 /* Ask stabsread.h to define the vars it normally declares `extern'. */
55 #include "stabsread.h" /* Our own declarations */
58 extern void _initialize_stabsread (void);
60 /* The routines that read and process a complete stabs for a C struct or
61 C++ class pass lists of data member fields and lists of member function
62 fields in an instance of a field_info structure, as defined below.
63 This is part of some reorganization of low level C++ support and is
64 expected to eventually go away... (FIXME) */
70 struct nextfield
*next
;
72 /* This is the raw visibility from the stab. It is not checked
73 for being one of the visibilities we recognize, so code which
74 examines this field better be able to deal. */
80 struct next_fnfieldlist
82 struct next_fnfieldlist
*next
;
83 struct fn_fieldlist fn_fieldlist
;
89 read_one_struct_field (struct field_info
*, char **, char *,
90 struct type
*, struct objfile
*);
92 static char *get_substring (char **, int);
94 static struct type
*dbx_alloc_type (int[2], struct objfile
*);
96 static long read_huge_number (char **, int, int *);
98 static struct type
*error_type (char **, struct objfile
*);
101 patch_block_stabs (struct pending
*, struct pending_stabs
*,
104 static void fix_common_block (struct symbol
*, int);
106 static int read_type_number (char **, int *);
108 static struct type
*read_type (char **, struct objfile
*);
110 static struct type
*read_range_type (char **, int[2], struct objfile
*);
112 static struct type
*read_sun_builtin_type (char **, int[2], struct objfile
*);
114 static struct type
*read_sun_floating_type (char **, int[2],
117 static struct type
*read_enum_type (char **, struct type
*, struct objfile
*);
119 static struct type
*rs6000_builtin_type (int);
122 read_member_functions (struct field_info
*, char **, struct type
*,
126 read_struct_fields (struct field_info
*, char **, struct type
*,
130 read_baseclasses (struct field_info
*, char **, struct type
*,
134 read_tilde_fields (struct field_info
*, char **, struct type
*,
137 static int attach_fn_fields_to_type (struct field_info
*, struct type
*);
139 static int attach_fields_to_type (struct field_info
*, struct type
*,
142 static struct type
*read_struct_type (char **, struct type
*,
146 static struct type
*read_array_type (char **, struct type
*,
149 static struct field
*read_args (char **, int, struct objfile
*, int *, int *);
151 static void add_undefined_type (struct type
*);
154 read_cpp_abbrev (struct field_info
*, char **, struct type
*,
157 static char *find_name_end (char *name
);
159 static int process_reference (char **string
);
161 static CORE_ADDR
ref_search_value (int refnum
);
163 void stabsread_clear_cache (void);
165 static const char vptr_name
[] = "_vptr$";
166 static const char vb_name
[] = "_vb$";
168 /* Define this as 1 if a pcc declaration of a char or short argument
169 gives the correct address. Otherwise assume pcc gives the
170 address of the corresponding int, which is not the same on a
171 big-endian machine. */
173 #if !defined (BELIEVE_PCC_PROMOTION)
174 #define BELIEVE_PCC_PROMOTION 0
178 invalid_cpp_abbrev_complaint (const char *arg1
)
180 complaint (&symfile_complaints
, "invalid C++ abbreviation `%s'", arg1
);
184 reg_value_complaint (int arg1
, int arg2
, const char *arg3
)
186 complaint (&symfile_complaints
,
187 "register number %d too large (max %d) in symbol %s", arg1
, arg2
,
192 stabs_general_complaint (const char *arg1
)
194 complaint (&symfile_complaints
, "%s", arg1
);
198 lrs_general_complaint (const char *arg1
)
200 complaint (&symfile_complaints
, "%s", arg1
);
203 /* Make a list of forward references which haven't been defined. */
205 static struct type
**undef_types
;
206 static int undef_types_allocated
;
207 static int undef_types_length
;
208 static struct symbol
*current_symbol
= NULL
;
210 /* Check for and handle cretinous stabs symbol name continuation! */
211 #define STABS_CONTINUE(pp,objfile) \
213 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
214 *(pp) = next_symbol_text (objfile); \
218 /* Look up a dbx type-number pair. Return the address of the slot
219 where the type for that number-pair is stored.
220 The number-pair is in TYPENUMS.
222 This can be used for finding the type associated with that pair
223 or for associating a new type with the pair. */
225 static struct type
**
226 dbx_lookup_type (int typenums
[2])
228 int filenum
= typenums
[0];
229 int index
= typenums
[1];
232 struct header_file
*f
;
235 if (filenum
== -1) /* -1,-1 is for temporary types. */
238 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
240 complaint (&symfile_complaints
,
241 "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
242 filenum
, index
, symnum
);
250 /* Caller wants address of address of type. We think
251 that negative (rs6k builtin) types will never appear as
252 "lvalues", (nor should they), so we stuff the real type
253 pointer into a temp, and return its address. If referenced,
254 this will do the right thing. */
255 static struct type
*temp_type
;
257 temp_type
= rs6000_builtin_type (index
);
261 /* Type is defined outside of header files.
262 Find it in this object file's type vector. */
263 if (index
>= type_vector_length
)
265 old_len
= type_vector_length
;
268 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
269 type_vector
= (struct type
**)
270 xmalloc (type_vector_length
* sizeof (struct type
*));
272 while (index
>= type_vector_length
)
274 type_vector_length
*= 2;
276 type_vector
= (struct type
**)
277 xrealloc ((char *) type_vector
,
278 (type_vector_length
* sizeof (struct type
*)));
279 memset (&type_vector
[old_len
], 0,
280 (type_vector_length
- old_len
) * sizeof (struct type
*));
282 return (&type_vector
[index
]);
286 real_filenum
= this_object_header_files
[filenum
];
288 if (real_filenum
>= N_HEADER_FILES (current_objfile
))
290 struct type
*temp_type
;
291 struct type
**temp_type_p
;
293 warning ("GDB internal error: bad real_filenum");
296 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
297 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
298 *temp_type_p
= temp_type
;
302 f
= HEADER_FILES (current_objfile
) + real_filenum
;
304 f_orig_length
= f
->length
;
305 if (index
>= f_orig_length
)
307 while (index
>= f
->length
)
311 f
->vector
= (struct type
**)
312 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
313 memset (&f
->vector
[f_orig_length
], 0,
314 (f
->length
- f_orig_length
) * sizeof (struct type
*));
316 return (&f
->vector
[index
]);
320 /* Make sure there is a type allocated for type numbers TYPENUMS
321 and return the type object.
322 This can create an empty (zeroed) type object.
323 TYPENUMS may be (-1, -1) to return a new type object that is not
324 put into the type vector, and so may not be referred to by number. */
327 dbx_alloc_type (int typenums
[2], struct objfile
*objfile
)
329 struct type
**type_addr
;
331 if (typenums
[0] == -1)
333 return (alloc_type (objfile
));
336 type_addr
= dbx_lookup_type (typenums
);
338 /* If we are referring to a type not known at all yet,
339 allocate an empty type for it.
340 We will fill it in later if we find out how. */
343 *type_addr
= alloc_type (objfile
);
349 /* for all the stabs in a given stab vector, build appropriate types
350 and fix their symbols in given symbol vector. */
353 patch_block_stabs (struct pending
*symbols
, struct pending_stabs
*stabs
,
354 struct objfile
*objfile
)
364 /* for all the stab entries, find their corresponding symbols and
365 patch their types! */
367 for (ii
= 0; ii
< stabs
->count
; ++ii
)
369 name
= stabs
->stab
[ii
];
370 pp
= (char *) strchr (name
, ':');
374 pp
= (char *) strchr (pp
, ':');
376 sym
= find_symbol_in_list (symbols
, name
, pp
- name
);
379 /* FIXME-maybe: it would be nice if we noticed whether
380 the variable was defined *anywhere*, not just whether
381 it is defined in this compilation unit. But neither
382 xlc or GCC seem to need such a definition, and until
383 we do psymtabs (so that the minimal symbols from all
384 compilation units are available now), I'm not sure
385 how to get the information. */
387 /* On xcoff, if a global is defined and never referenced,
388 ld will remove it from the executable. There is then
389 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
390 sym
= (struct symbol
*)
391 obstack_alloc (&objfile
->symbol_obstack
,
392 sizeof (struct symbol
));
394 memset (sym
, 0, sizeof (struct symbol
));
395 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
396 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
397 DEPRECATED_SYMBOL_NAME (sym
) =
398 obsavestring (name
, pp
- name
, &objfile
->symbol_obstack
);
400 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
402 /* I don't think the linker does this with functions,
403 so as far as I know this is never executed.
404 But it doesn't hurt to check. */
406 lookup_function_type (read_type (&pp
, objfile
));
410 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
412 add_symbol_to_list (sym
, &global_symbols
);
417 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
420 lookup_function_type (read_type (&pp
, objfile
));
424 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
432 /* Read a number by which a type is referred to in dbx data,
433 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
434 Just a single number N is equivalent to (0,N).
435 Return the two numbers by storing them in the vector TYPENUMS.
436 TYPENUMS will then be used as an argument to dbx_lookup_type.
438 Returns 0 for success, -1 for error. */
441 read_type_number (char **pp
, int *typenums
)
447 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
450 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
457 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
465 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
466 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
467 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
468 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
470 /* Structure for storing pointers to reference definitions for fast lookup
471 during "process_later". */
480 #define MAX_CHUNK_REFS 100
481 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
482 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
484 static struct ref_map
*ref_map
;
486 /* Ptr to free cell in chunk's linked list. */
487 static int ref_count
= 0;
489 /* Number of chunks malloced. */
490 static int ref_chunk
= 0;
492 /* This file maintains a cache of stabs aliases found in the symbol
493 table. If the symbol table changes, this cache must be cleared
494 or we are left holding onto data in invalid obstacks. */
496 stabsread_clear_cache (void)
502 /* Create array of pointers mapping refids to symbols and stab strings.
503 Add pointers to reference definition symbols and/or their values as we
504 find them, using their reference numbers as our index.
505 These will be used later when we resolve references. */
507 ref_add (int refnum
, struct symbol
*sym
, char *stabs
, CORE_ADDR value
)
511 if (refnum
>= ref_count
)
512 ref_count
= refnum
+ 1;
513 if (ref_count
> ref_chunk
* MAX_CHUNK_REFS
)
515 int new_slots
= ref_count
- ref_chunk
* MAX_CHUNK_REFS
;
516 int new_chunks
= new_slots
/ MAX_CHUNK_REFS
+ 1;
517 ref_map
= (struct ref_map
*)
518 xrealloc (ref_map
, REF_MAP_SIZE (ref_chunk
+ new_chunks
));
519 memset (ref_map
+ ref_chunk
* MAX_CHUNK_REFS
, 0, new_chunks
* REF_CHUNK_SIZE
);
520 ref_chunk
+= new_chunks
;
522 ref_map
[refnum
].stabs
= stabs
;
523 ref_map
[refnum
].sym
= sym
;
524 ref_map
[refnum
].value
= value
;
527 /* Return defined sym for the reference REFNUM. */
529 ref_search (int refnum
)
531 if (refnum
< 0 || refnum
> ref_count
)
533 return ref_map
[refnum
].sym
;
536 /* Return value for the reference REFNUM. */
539 ref_search_value (int refnum
)
541 if (refnum
< 0 || refnum
> ref_count
)
543 return ref_map
[refnum
].value
;
546 /* Parse a reference id in STRING and return the resulting
547 reference number. Move STRING beyond the reference id. */
550 process_reference (char **string
)
558 /* Advance beyond the initial '#'. */
561 /* Read number as reference id. */
562 while (*p
&& isdigit (*p
))
564 refnum
= refnum
* 10 + *p
- '0';
571 /* If STRING defines a reference, store away a pointer to the reference
572 definition for later use. Return the reference number. */
575 symbol_reference_defined (char **string
)
580 refnum
= process_reference (&p
);
582 /* Defining symbols end in '=' */
585 /* Symbol is being defined here. */
591 /* Must be a reference. Either the symbol has already been defined,
592 or this is a forward reference to it. */
599 define_symbol (CORE_ADDR valu
, char *string
, int desc
, int type
,
600 struct objfile
*objfile
)
603 char *p
= (char *) find_name_end (string
);
608 /* We would like to eliminate nameless symbols, but keep their types.
609 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
610 to type 2, but, should not create a symbol to address that type. Since
611 the symbol will be nameless, there is no way any user can refer to it. */
615 /* Ignore syms with empty names. */
619 /* Ignore old-style symbols from cc -go */
629 /* If a nameless stab entry, all we need is the type, not the symbol.
630 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
631 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
633 current_symbol
= sym
= (struct symbol
*)
634 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
635 memset (sym
, 0, sizeof (struct symbol
));
637 switch (type
& N_TYPE
)
640 SYMBOL_SECTION (sym
) = SECT_OFF_TEXT (objfile
);
643 SYMBOL_SECTION (sym
) = SECT_OFF_DATA (objfile
);
646 SYMBOL_SECTION (sym
) = SECT_OFF_BSS (objfile
);
650 if (processing_gcc_compilation
)
652 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
653 number of bytes occupied by a type or object, which we ignore. */
654 SYMBOL_LINE (sym
) = desc
;
658 SYMBOL_LINE (sym
) = 0; /* unknown */
661 if (is_cplus_marker (string
[0]))
663 /* Special GNU C++ names. */
667 DEPRECATED_SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
668 &objfile
->symbol_obstack
);
671 case 'v': /* $vtbl_ptr_type */
672 /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */
676 DEPRECATED_SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
677 &objfile
->symbol_obstack
);
681 /* This was an anonymous type that was never fixed up. */
684 #ifdef STATIC_TRANSFORM_NAME
686 /* SunPRO (3.0 at least) static variable encoding. */
691 complaint (&symfile_complaints
, "Unknown C++ symbol name `%s'",
693 goto normal
; /* Do *something* with it */
699 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
700 SYMBOL_SET_NAMES (sym
, string
, p
- string
, objfile
);
704 /* Determine the type of name being defined. */
706 /* Getting GDB to correctly skip the symbol on an undefined symbol
707 descriptor and not ever dump core is a very dodgy proposition if
708 we do things this way. I say the acorn RISC machine can just
709 fix their compiler. */
710 /* The Acorn RISC machine's compiler can put out locals that don't
711 start with "234=" or "(3,4)=", so assume anything other than the
712 deftypes we know how to handle is a local. */
713 if (!strchr ("cfFGpPrStTvVXCR", *p
))
715 if (isdigit (*p
) || *p
== '(' || *p
== '-')
724 /* c is a special case, not followed by a type-number.
725 SYMBOL:c=iVALUE for an integer constant symbol.
726 SYMBOL:c=rVALUE for a floating constant symbol.
727 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
728 e.g. "b:c=e6,0" for "const b = blob1"
729 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
732 SYMBOL_CLASS (sym
) = LOC_CONST
;
733 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
734 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
735 add_symbol_to_list (sym
, &file_symbols
);
746 /* FIXME-if-picky-about-floating-accuracy: Should be using
747 target arithmetic to get the value. real.c in GCC
748 probably has the necessary code. */
750 /* FIXME: lookup_fundamental_type is a hack. We should be
751 creating a type especially for the type of float constants.
752 Problem is, what type should it be?
754 Also, what should the name of this type be? Should we
755 be using 'S' constants (see stabs.texinfo) instead? */
757 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
760 obstack_alloc (&objfile
->symbol_obstack
,
761 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
762 store_typed_floating (dbl_valu
, SYMBOL_TYPE (sym
), d
);
763 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
764 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
769 /* Defining integer constants this way is kind of silly,
770 since 'e' constants allows the compiler to give not
771 only the value, but the type as well. C has at least
772 int, long, unsigned int, and long long as constant
773 types; other languages probably should have at least
774 unsigned as well as signed constants. */
776 /* We just need one int constant type for all objfiles.
777 It doesn't depend on languages or anything (arguably its
778 name should be a language-specific name for a type of
779 that size, but I'm inclined to say that if the compiler
780 wants a nice name for the type, it can use 'e'). */
781 static struct type
*int_const_type
;
783 /* Yes, this is as long as a *host* int. That is because we
785 if (int_const_type
== NULL
)
787 init_type (TYPE_CODE_INT
,
788 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
790 (struct objfile
*) NULL
);
791 SYMBOL_TYPE (sym
) = int_const_type
;
792 SYMBOL_VALUE (sym
) = atoi (p
);
793 SYMBOL_CLASS (sym
) = LOC_CONST
;
797 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
798 can be represented as integral.
799 e.g. "b:c=e6,0" for "const b = blob1"
800 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
802 SYMBOL_CLASS (sym
) = LOC_CONST
;
803 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
807 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
812 /* If the value is too big to fit in an int (perhaps because
813 it is unsigned), or something like that, we silently get
814 a bogus value. The type and everything else about it is
815 correct. Ideally, we should be using whatever we have
816 available for parsing unsigned and long long values,
818 SYMBOL_VALUE (sym
) = atoi (p
);
823 SYMBOL_CLASS (sym
) = LOC_CONST
;
824 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
827 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
828 add_symbol_to_list (sym
, &file_symbols
);
832 /* The name of a caught exception. */
833 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
834 SYMBOL_CLASS (sym
) = LOC_LABEL
;
835 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
836 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
837 add_symbol_to_list (sym
, &local_symbols
);
841 /* A static function definition. */
842 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
843 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
844 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
845 add_symbol_to_list (sym
, &file_symbols
);
846 /* fall into process_function_types. */
848 process_function_types
:
849 /* Function result types are described as the result type in stabs.
850 We need to convert this to the function-returning-type-X type
851 in GDB. E.g. "int" is converted to "function returning int". */
852 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
853 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
855 /* All functions in C++ have prototypes. Stabs does not offer an
856 explicit way to identify prototyped or unprototyped functions,
857 but both GCC and Sun CC emit stabs for the "call-as" type rather
858 than the "declared-as" type for unprototyped functions, so
859 we treat all functions as if they were prototyped. This is used
860 primarily for promotion when calling the function from GDB. */
861 TYPE_FLAGS (SYMBOL_TYPE (sym
)) |= TYPE_FLAG_PROTOTYPED
;
863 /* fall into process_prototype_types */
865 process_prototype_types
:
866 /* Sun acc puts declared types of arguments here. */
869 struct type
*ftype
= SYMBOL_TYPE (sym
);
874 /* Obtain a worst case guess for the number of arguments
875 by counting the semicolons. */
882 /* Allocate parameter information fields and fill them in. */
883 TYPE_FIELDS (ftype
) = (struct field
*)
884 TYPE_ALLOC (ftype
, nsemi
* sizeof (struct field
));
889 /* A type number of zero indicates the start of varargs.
890 FIXME: GDB currently ignores vararg functions. */
891 if (p
[0] == '0' && p
[1] == '\0')
893 ptype
= read_type (&p
, objfile
);
895 /* The Sun compilers mark integer arguments, which should
896 be promoted to the width of the calling conventions, with
897 a type which references itself. This type is turned into
898 a TYPE_CODE_VOID type by read_type, and we have to turn
899 it back into builtin_type_int here.
900 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
901 if (TYPE_CODE (ptype
) == TYPE_CODE_VOID
)
902 ptype
= builtin_type_int
;
903 TYPE_FIELD_TYPE (ftype
, nparams
) = ptype
;
904 TYPE_FIELD_ARTIFICIAL (ftype
, nparams
++) = 0;
906 TYPE_NFIELDS (ftype
) = nparams
;
907 TYPE_FLAGS (ftype
) |= TYPE_FLAG_PROTOTYPED
;
912 /* A global function definition. */
913 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
914 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
915 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
916 add_symbol_to_list (sym
, &global_symbols
);
917 goto process_function_types
;
920 /* For a class G (global) symbol, it appears that the
921 value is not correct. It is necessary to search for the
922 corresponding linker definition to find the value.
923 These definitions appear at the end of the namelist. */
924 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
925 SYMBOL_CLASS (sym
) = LOC_STATIC
;
926 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
927 /* Don't add symbol references to global_sym_chain.
928 Symbol references don't have valid names and wont't match up with
929 minimal symbols when the global_sym_chain is relocated.
930 We'll fixup symbol references when we fixup the defining symbol. */
931 if (DEPRECATED_SYMBOL_NAME (sym
) && DEPRECATED_SYMBOL_NAME (sym
)[0] != '#')
933 i
= hashname (DEPRECATED_SYMBOL_NAME (sym
));
934 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
935 global_sym_chain
[i
] = sym
;
937 add_symbol_to_list (sym
, &global_symbols
);
940 /* This case is faked by a conditional above,
941 when there is no code letter in the dbx data.
942 Dbx data never actually contains 'l'. */
945 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
946 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
947 SYMBOL_VALUE (sym
) = valu
;
948 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
949 add_symbol_to_list (sym
, &local_symbols
);
954 /* pF is a two-letter code that means a function parameter in Fortran.
955 The type-number specifies the type of the return value.
956 Translate it into a pointer-to-function type. */
960 = lookup_pointer_type
961 (lookup_function_type (read_type (&p
, objfile
)));
964 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
966 SYMBOL_CLASS (sym
) = LOC_ARG
;
967 SYMBOL_VALUE (sym
) = valu
;
968 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
969 add_symbol_to_list (sym
, &local_symbols
);
971 if (TARGET_BYTE_ORDER
!= BFD_ENDIAN_BIG
)
973 /* On little-endian machines, this crud is never necessary,
974 and, if the extra bytes contain garbage, is harmful. */
978 /* If it's gcc-compiled, if it says `short', believe it. */
979 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
982 if (!BELIEVE_PCC_PROMOTION
)
984 /* This is the signed type which arguments get promoted to. */
985 static struct type
*pcc_promotion_type
;
986 /* This is the unsigned type which arguments get promoted to. */
987 static struct type
*pcc_unsigned_promotion_type
;
989 /* Call it "int" because this is mainly C lossage. */
990 if (pcc_promotion_type
== NULL
)
992 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
995 if (pcc_unsigned_promotion_type
== NULL
)
996 pcc_unsigned_promotion_type
=
997 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
998 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
1000 if (BELIEVE_PCC_PROMOTION_TYPE
)
1002 /* This is defined on machines (e.g. sparc) where we
1003 should believe the type of a PCC 'short' argument,
1004 but shouldn't believe the address (the address is the
1005 address of the corresponding int).
1007 My guess is that this correction, as opposed to
1008 changing the parameter to an 'int' (as done below,
1009 for PCC on most machines), is the right thing to do
1010 on all machines, but I don't want to risk breaking
1011 something that already works. On most PCC machines,
1012 the sparc problem doesn't come up because the calling
1013 function has to zero the top bytes (not knowing
1014 whether the called function wants an int or a short),
1015 so there is little practical difference between an
1016 int and a short (except perhaps what happens when the
1017 GDB user types "print short_arg = 0x10000;").
1019 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1020 compiler actually produces the correct address (we
1021 don't need to fix it up). I made this code adapt so
1022 that it will offset the symbol if it was pointing at
1023 an int-aligned location and not otherwise. This way
1024 you can use the same gdb for 4.0.x and 4.1 systems.
1026 If the parameter is shorter than an int, and is
1027 integral (e.g. char, short, or unsigned equivalent),
1028 and is claimed to be passed on an integer boundary,
1029 don't believe it! Offset the parameter's address to
1030 the tail-end of that integer. */
1032 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1033 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
1034 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
1036 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
1037 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
1043 /* If PCC says a parameter is a short or a char,
1044 it is really an int. */
1045 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1046 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
1049 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
1050 ? pcc_unsigned_promotion_type
1051 : pcc_promotion_type
;
1058 /* acc seems to use P to declare the prototypes of functions that
1059 are referenced by this file. gdb is not prepared to deal
1060 with this extra information. FIXME, it ought to. */
1063 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1064 goto process_prototype_types
;
1069 /* Parameter which is in a register. */
1070 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1071 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
1072 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1073 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1075 reg_value_complaint (SYMBOL_VALUE (sym
),
1076 NUM_REGS
+ NUM_PSEUDO_REGS
,
1077 SYMBOL_PRINT_NAME (sym
));
1078 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1080 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1081 add_symbol_to_list (sym
, &local_symbols
);
1085 /* Register variable (either global or local). */
1086 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1087 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
1088 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1089 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1091 reg_value_complaint (SYMBOL_VALUE (sym
),
1092 NUM_REGS
+ NUM_PSEUDO_REGS
,
1093 SYMBOL_PRINT_NAME (sym
));
1094 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1096 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1097 if (within_function
)
1099 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1100 the same name to represent an argument passed in a
1101 register. GCC uses 'P' for the same case. So if we find
1102 such a symbol pair we combine it into one 'P' symbol.
1103 For Sun cc we need to do this regardless of
1104 stabs_argument_has_addr, because the compiler puts out
1105 the 'p' symbol even if it never saves the argument onto
1108 On most machines, we want to preserve both symbols, so
1109 that we can still get information about what is going on
1110 with the stack (VAX for computing args_printed, using
1111 stack slots instead of saved registers in backtraces,
1114 Note that this code illegally combines
1115 main(argc) struct foo argc; { register struct foo argc; }
1116 but this case is considered pathological and causes a warning
1117 from a decent compiler. */
1120 && local_symbols
->nsyms
> 0
1121 #ifndef USE_REGISTER_NOT_ARG
1122 && gdbarch_stabs_argument_has_addr (current_gdbarch
,
1127 struct symbol
*prev_sym
;
1128 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1129 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1130 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1131 && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym
),
1132 DEPRECATED_SYMBOL_NAME (sym
)) == 0)
1134 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1135 /* Use the type from the LOC_REGISTER; that is the type
1136 that is actually in that register. */
1137 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1138 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1143 add_symbol_to_list (sym
, &local_symbols
);
1146 add_symbol_to_list (sym
, &file_symbols
);
1150 /* Static symbol at top level of file */
1151 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1152 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1153 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1154 #ifdef STATIC_TRANSFORM_NAME
1155 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
)))
1157 struct minimal_symbol
*msym
;
1158 msym
= lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym
), NULL
, objfile
);
1161 DEPRECATED_SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
));
1162 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1166 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1167 add_symbol_to_list (sym
, &file_symbols
);
1172 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1174 /* For a nameless type, we don't want a create a symbol, thus we
1175 did not use `sym'. Return without further processing. */
1179 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1180 SYMBOL_VALUE (sym
) = valu
;
1181 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1182 /* C++ vagaries: we may have a type which is derived from
1183 a base type which did not have its name defined when the
1184 derived class was output. We fill in the derived class's
1185 base part member's name here in that case. */
1186 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1187 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1188 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1189 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1192 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1193 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1194 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1195 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1198 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1200 /* gcc-2.6 or later (when using -fvtable-thunks)
1201 emits a unique named type for a vtable entry.
1202 Some gdb code depends on that specific name. */
1203 extern const char vtbl_ptr_name
[];
1205 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1206 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), vtbl_ptr_name
))
1207 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1209 /* If we are giving a name to a type such as "pointer to
1210 foo" or "function returning foo", we better not set
1211 the TYPE_NAME. If the program contains "typedef char
1212 *caddr_t;", we don't want all variables of type char
1213 * to print as caddr_t. This is not just a
1214 consequence of GDB's type management; PCC and GCC (at
1215 least through version 2.4) both output variables of
1216 either type char * or caddr_t with the type number
1217 defined in the 't' symbol for caddr_t. If a future
1218 compiler cleans this up it GDB is not ready for it
1219 yet, but if it becomes ready we somehow need to
1220 disable this check (without breaking the PCC/GCC2.4
1225 Fortunately, this check seems not to be necessary
1226 for anything except pointers or functions. */
1227 /* ezannoni: 2000-10-26. This seems to apply for
1228 versions of gcc older than 2.8. This was the original
1229 problem: with the following code gdb would tell that
1230 the type for name1 is caddr_t, and func is char()
1231 typedef char *caddr_t;
1243 /* Pascal accepts names for pointer types. */
1244 if (current_subfile
->language
== language_pascal
)
1246 TYPE_NAME (SYMBOL_TYPE (sym
)) = DEPRECATED_SYMBOL_NAME (sym
);
1250 TYPE_NAME (SYMBOL_TYPE (sym
)) = DEPRECATED_SYMBOL_NAME (sym
);
1253 add_symbol_to_list (sym
, &file_symbols
);
1257 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1258 by 't' which means we are typedef'ing it as well. */
1259 synonym
= *p
== 't';
1264 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1266 /* For a nameless type, we don't want a create a symbol, thus we
1267 did not use `sym'. Return without further processing. */
1271 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1272 SYMBOL_VALUE (sym
) = valu
;
1273 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
1274 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1275 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1276 = obconcat (&objfile
->type_obstack
, "", "", DEPRECATED_SYMBOL_NAME (sym
));
1277 add_symbol_to_list (sym
, &file_symbols
);
1281 /* Clone the sym and then modify it. */
1282 struct symbol
*typedef_sym
= (struct symbol
*)
1283 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
1284 *typedef_sym
= *sym
;
1285 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1286 SYMBOL_VALUE (typedef_sym
) = valu
;
1287 SYMBOL_DOMAIN (typedef_sym
) = VAR_DOMAIN
;
1288 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1289 TYPE_NAME (SYMBOL_TYPE (sym
))
1290 = obconcat (&objfile
->type_obstack
, "", "", DEPRECATED_SYMBOL_NAME (sym
));
1291 add_symbol_to_list (typedef_sym
, &file_symbols
);
1296 /* Static symbol of local scope */
1297 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1298 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1299 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1300 #ifdef STATIC_TRANSFORM_NAME
1301 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
)))
1303 struct minimal_symbol
*msym
;
1304 msym
= lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym
), NULL
, objfile
);
1307 DEPRECATED_SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
));
1308 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1312 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1313 add_symbol_to_list (sym
, &local_symbols
);
1317 /* Reference parameter */
1318 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1319 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1320 SYMBOL_VALUE (sym
) = valu
;
1321 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1322 add_symbol_to_list (sym
, &local_symbols
);
1326 /* Reference parameter which is in a register. */
1327 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1328 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1329 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1330 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1332 reg_value_complaint (SYMBOL_VALUE (sym
),
1333 NUM_REGS
+ NUM_PSEUDO_REGS
,
1334 SYMBOL_PRINT_NAME (sym
));
1335 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1337 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1338 add_symbol_to_list (sym
, &local_symbols
);
1342 /* This is used by Sun FORTRAN for "function result value".
1343 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1344 that Pascal uses it too, but when I tried it Pascal used
1345 "x:3" (local symbol) instead. */
1346 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1347 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1348 SYMBOL_VALUE (sym
) = valu
;
1349 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1350 add_symbol_to_list (sym
, &local_symbols
);
1354 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1355 SYMBOL_CLASS (sym
) = LOC_CONST
;
1356 SYMBOL_VALUE (sym
) = 0;
1357 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1358 add_symbol_to_list (sym
, &file_symbols
);
1362 /* Some systems pass variables of certain types by reference instead
1363 of by value, i.e. they will pass the address of a structure (in a
1364 register or on the stack) instead of the structure itself. */
1366 if (gdbarch_stabs_argument_has_addr (current_gdbarch
, SYMBOL_TYPE (sym
))
1367 && (SYMBOL_CLASS (sym
) == LOC_REGPARM
|| SYMBOL_CLASS (sym
) == LOC_ARG
))
1369 /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for
1370 variables passed in a register). */
1371 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
)
1372 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1373 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1374 and subsequent arguments on SPARC, for example). */
1375 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
1376 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1382 /* Skip rest of this symbol and return an error type.
1384 General notes on error recovery: error_type always skips to the
1385 end of the symbol (modulo cretinous dbx symbol name continuation).
1386 Thus code like this:
1388 if (*(*pp)++ != ';')
1389 return error_type (pp, objfile);
1391 is wrong because if *pp starts out pointing at '\0' (typically as the
1392 result of an earlier error), it will be incremented to point to the
1393 start of the next symbol, which might produce strange results, at least
1394 if you run off the end of the string table. Instead use
1397 return error_type (pp, objfile);
1403 foo = error_type (pp, objfile);
1407 And in case it isn't obvious, the point of all this hair is so the compiler
1408 can define new types and new syntaxes, and old versions of the
1409 debugger will be able to read the new symbol tables. */
1411 static struct type
*
1412 error_type (char **pp
, struct objfile
*objfile
)
1414 complaint (&symfile_complaints
, "couldn't parse type; debugger out of date?");
1417 /* Skip to end of symbol. */
1418 while (**pp
!= '\0')
1423 /* Check for and handle cretinous dbx symbol name continuation! */
1424 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1426 *pp
= next_symbol_text (objfile
);
1433 return (builtin_type_error
);
1437 /* Read type information or a type definition; return the type. Even
1438 though this routine accepts either type information or a type
1439 definition, the distinction is relevant--some parts of stabsread.c
1440 assume that type information starts with a digit, '-', or '(' in
1441 deciding whether to call read_type. */
1443 static struct type
*
1444 read_type (char **pp
, struct objfile
*objfile
)
1446 struct type
*type
= 0;
1449 char type_descriptor
;
1451 /* Size in bits of type if specified by a type attribute, or -1 if
1452 there is no size attribute. */
1455 /* Used to distinguish string and bitstring from char-array and set. */
1458 /* Used to distinguish vector from array. */
1461 /* Read type number if present. The type number may be omitted.
1462 for instance in a two-dimensional array declared with type
1463 "ar1;1;10;ar1;1;10;4". */
1464 if ((**pp
>= '0' && **pp
<= '9')
1468 if (read_type_number (pp
, typenums
) != 0)
1469 return error_type (pp
, objfile
);
1471 /* Type is not being defined here. Either it already exists,
1472 or this is a forward reference to it. dbx_alloc_type handles
1475 return dbx_alloc_type (typenums
, objfile
);
1477 /* Type is being defined here. */
1479 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1484 /* 'typenums=' not present, type is anonymous. Read and return
1485 the definition, but don't put it in the type vector. */
1486 typenums
[0] = typenums
[1] = -1;
1491 type_descriptor
= (*pp
)[-1];
1492 switch (type_descriptor
)
1496 enum type_code code
;
1498 /* Used to index through file_symbols. */
1499 struct pending
*ppt
;
1502 /* Name including "struct", etc. */
1506 char *from
, *to
, *p
, *q1
, *q2
;
1508 /* Set the type code according to the following letter. */
1512 code
= TYPE_CODE_STRUCT
;
1515 code
= TYPE_CODE_UNION
;
1518 code
= TYPE_CODE_ENUM
;
1522 /* Complain and keep going, so compilers can invent new
1523 cross-reference types. */
1524 complaint (&symfile_complaints
,
1525 "Unrecognized cross-reference type `%c'", (*pp
)[0]);
1526 code
= TYPE_CODE_STRUCT
;
1531 q1
= strchr (*pp
, '<');
1532 p
= strchr (*pp
, ':');
1534 return error_type (pp
, objfile
);
1535 if (q1
&& p
> q1
&& p
[1] == ':')
1537 int nesting_level
= 0;
1538 for (q2
= q1
; *q2
; q2
++)
1542 else if (*q2
== '>')
1544 else if (*q2
== ':' && nesting_level
== 0)
1549 return error_type (pp
, objfile
);
1552 (char *) obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1554 /* Copy the name. */
1560 /* Set the pointer ahead of the name which we just read, and
1565 /* Now check to see whether the type has already been
1566 declared. This was written for arrays of cross-referenced
1567 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1568 sure it is not necessary anymore. But it might be a good
1569 idea, to save a little memory. */
1571 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1572 for (i
= 0; i
< ppt
->nsyms
; i
++)
1574 struct symbol
*sym
= ppt
->symbol
[i
];
1576 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1577 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
1578 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1579 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), type_name
) == 0)
1581 obstack_free (&objfile
->type_obstack
, type_name
);
1582 type
= SYMBOL_TYPE (sym
);
1587 /* Didn't find the type to which this refers, so we must
1588 be dealing with a forward reference. Allocate a type
1589 structure for it, and keep track of it so we can
1590 fill in the rest of the fields when we get the full
1592 type
= dbx_alloc_type (typenums
, objfile
);
1593 TYPE_CODE (type
) = code
;
1594 TYPE_TAG_NAME (type
) = type_name
;
1595 INIT_CPLUS_SPECIFIC (type
);
1596 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1598 add_undefined_type (type
);
1602 case '-': /* RS/6000 built-in type */
1616 /* We deal with something like t(1,2)=(3,4)=... which
1617 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1619 /* Allocate and enter the typedef type first.
1620 This handles recursive types. */
1621 type
= dbx_alloc_type (typenums
, objfile
);
1622 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1624 struct type
*xtype
= read_type (pp
, objfile
);
1627 /* It's being defined as itself. That means it is "void". */
1628 TYPE_CODE (type
) = TYPE_CODE_VOID
;
1629 TYPE_LENGTH (type
) = 1;
1631 else if (type_size
>= 0 || is_string
)
1633 /* This is the absolute wrong way to construct types. Every
1634 other debug format has found a way around this problem and
1635 the related problems with unnecessarily stubbed types;
1636 someone motivated should attempt to clean up the issue
1637 here as well. Once a type pointed to has been created it
1638 should not be modified.
1640 Well, it's not *absolutely* wrong. Constructing recursive
1641 types (trees, linked lists) necessarily entails modifying
1642 types after creating them. Constructing any loop structure
1643 entails side effects. The Dwarf 2 reader does handle this
1644 more gracefully (it never constructs more than once
1645 instance of a type object, so it doesn't have to copy type
1646 objects wholesale), but it still mutates type objects after
1647 other folks have references to them.
1649 Keep in mind that this circularity/mutation issue shows up
1650 at the source language level, too: C's "incomplete types",
1651 for example. So the proper cleanup, I think, would be to
1652 limit GDB's type smashing to match exactly those required
1653 by the source language. So GDB could have a
1654 "complete_this_type" function, but never create unnecessary
1655 copies of a type otherwise. */
1656 replace_type (type
, xtype
);
1657 TYPE_NAME (type
) = NULL
;
1658 TYPE_TAG_NAME (type
) = NULL
;
1662 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1663 TYPE_TARGET_TYPE (type
) = xtype
;
1668 /* In the following types, we must be sure to overwrite any existing
1669 type that the typenums refer to, rather than allocating a new one
1670 and making the typenums point to the new one. This is because there
1671 may already be pointers to the existing type (if it had been
1672 forward-referenced), and we must change it to a pointer, function,
1673 reference, or whatever, *in-place*. */
1675 case '*': /* Pointer to another type */
1676 type1
= read_type (pp
, objfile
);
1677 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1680 case '&': /* Reference to another type */
1681 type1
= read_type (pp
, objfile
);
1682 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1685 case 'f': /* Function returning another type */
1686 type1
= read_type (pp
, objfile
);
1687 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1690 case 'g': /* Prototyped function. (Sun) */
1692 /* Unresolved questions:
1694 - According to Sun's ``STABS Interface Manual'', for 'f'
1695 and 'F' symbol descriptors, a `0' in the argument type list
1696 indicates a varargs function. But it doesn't say how 'g'
1697 type descriptors represent that info. Someone with access
1698 to Sun's toolchain should try it out.
1700 - According to the comment in define_symbol (search for
1701 `process_prototype_types:'), Sun emits integer arguments as
1702 types which ref themselves --- like `void' types. Do we
1703 have to deal with that here, too? Again, someone with
1704 access to Sun's toolchain should try it out and let us
1707 const char *type_start
= (*pp
) - 1;
1708 struct type
*return_type
= read_type (pp
, objfile
);
1709 struct type
*func_type
1710 = make_function_type (return_type
, dbx_lookup_type (typenums
));
1713 struct type_list
*next
;
1717 while (**pp
&& **pp
!= '#')
1719 struct type
*arg_type
= read_type (pp
, objfile
);
1720 struct type_list
*new = alloca (sizeof (*new));
1721 new->type
= arg_type
;
1722 new->next
= arg_types
;
1730 complaint (&symfile_complaints
,
1731 "Prototyped function type didn't end arguments with `#':\n%s",
1735 /* If there is just one argument whose type is `void', then
1736 that's just an empty argument list. */
1738 && ! arg_types
->next
1739 && TYPE_CODE (arg_types
->type
) == TYPE_CODE_VOID
)
1742 TYPE_FIELDS (func_type
)
1743 = (struct field
*) TYPE_ALLOC (func_type
,
1744 num_args
* sizeof (struct field
));
1745 memset (TYPE_FIELDS (func_type
), 0, num_args
* sizeof (struct field
));
1748 struct type_list
*t
;
1750 /* We stuck each argument type onto the front of the list
1751 when we read it, so the list is reversed. Build the
1752 fields array right-to-left. */
1753 for (t
= arg_types
, i
= num_args
- 1; t
; t
= t
->next
, i
--)
1754 TYPE_FIELD_TYPE (func_type
, i
) = t
->type
;
1756 TYPE_NFIELDS (func_type
) = num_args
;
1757 TYPE_FLAGS (func_type
) |= TYPE_FLAG_PROTOTYPED
;
1763 case 'k': /* Const qualifier on some type (Sun) */
1764 type
= read_type (pp
, objfile
);
1765 type
= make_cv_type (1, TYPE_VOLATILE (type
), type
,
1766 dbx_lookup_type (typenums
));
1769 case 'B': /* Volatile qual on some type (Sun) */
1770 type
= read_type (pp
, objfile
);
1771 type
= make_cv_type (TYPE_CONST (type
), 1, type
,
1772 dbx_lookup_type (typenums
));
1776 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
1777 { /* Member (class & variable) type */
1778 /* FIXME -- we should be doing smash_to_XXX types here. */
1780 struct type
*domain
= read_type (pp
, objfile
);
1781 struct type
*memtype
;
1784 /* Invalid member type data format. */
1785 return error_type (pp
, objfile
);
1788 memtype
= read_type (pp
, objfile
);
1789 type
= dbx_alloc_type (typenums
, objfile
);
1790 smash_to_member_type (type
, domain
, memtype
);
1793 /* type attribute */
1796 /* Skip to the semicolon. */
1797 while (**pp
!= ';' && **pp
!= '\0')
1800 return error_type (pp
, objfile
);
1802 ++ * pp
; /* Skip the semicolon. */
1806 case 's': /* Size attribute */
1807 type_size
= atoi (attr
+ 1);
1812 case 'S': /* String attribute */
1813 /* FIXME: check to see if following type is array? */
1817 case 'V': /* Vector attribute */
1818 /* FIXME: check to see if following type is array? */
1823 /* Ignore unrecognized type attributes, so future compilers
1824 can invent new ones. */
1832 case '#': /* Method (class & fn) type */
1833 if ((*pp
)[0] == '#')
1835 /* We'll get the parameter types from the name. */
1836 struct type
*return_type
;
1839 return_type
= read_type (pp
, objfile
);
1840 if (*(*pp
)++ != ';')
1841 complaint (&symfile_complaints
,
1842 "invalid (minimal) member type data format at symtab pos %d.",
1844 type
= allocate_stub_method (return_type
);
1845 if (typenums
[0] != -1)
1846 *dbx_lookup_type (typenums
) = type
;
1850 struct type
*domain
= read_type (pp
, objfile
);
1851 struct type
*return_type
;
1856 /* Invalid member type data format. */
1857 return error_type (pp
, objfile
);
1861 return_type
= read_type (pp
, objfile
);
1862 args
= read_args (pp
, ';', objfile
, &nargs
, &varargs
);
1863 type
= dbx_alloc_type (typenums
, objfile
);
1864 smash_to_method_type (type
, domain
, return_type
, args
,
1869 case 'r': /* Range type */
1870 type
= read_range_type (pp
, typenums
, objfile
);
1871 if (typenums
[0] != -1)
1872 *dbx_lookup_type (typenums
) = type
;
1877 /* Sun ACC builtin int type */
1878 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1879 if (typenums
[0] != -1)
1880 *dbx_lookup_type (typenums
) = type
;
1884 case 'R': /* Sun ACC builtin float type */
1885 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1886 if (typenums
[0] != -1)
1887 *dbx_lookup_type (typenums
) = type
;
1890 case 'e': /* Enumeration type */
1891 type
= dbx_alloc_type (typenums
, objfile
);
1892 type
= read_enum_type (pp
, type
, objfile
);
1893 if (typenums
[0] != -1)
1894 *dbx_lookup_type (typenums
) = type
;
1897 case 's': /* Struct type */
1898 case 'u': /* Union type */
1900 enum type_code type_code
= TYPE_CODE_UNDEF
;
1901 type
= dbx_alloc_type (typenums
, objfile
);
1902 switch (type_descriptor
)
1905 type_code
= TYPE_CODE_STRUCT
;
1908 type_code
= TYPE_CODE_UNION
;
1911 type
= read_struct_type (pp
, type
, type_code
, objfile
);
1915 case 'a': /* Array type */
1917 return error_type (pp
, objfile
);
1920 type
= dbx_alloc_type (typenums
, objfile
);
1921 type
= read_array_type (pp
, type
, objfile
);
1923 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1925 TYPE_FLAGS (type
) |= TYPE_FLAG_VECTOR
;
1928 case 'S': /* Set or bitstring type */
1929 type1
= read_type (pp
, objfile
);
1930 type
= create_set_type ((struct type
*) NULL
, type1
);
1932 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1933 if (typenums
[0] != -1)
1934 *dbx_lookup_type (typenums
) = type
;
1938 --*pp
; /* Go back to the symbol in error */
1939 /* Particularly important if it was \0! */
1940 return error_type (pp
, objfile
);
1945 warning ("GDB internal error, type is NULL in stabsread.c\n");
1946 return error_type (pp
, objfile
);
1949 /* Size specified in a type attribute overrides any other size. */
1950 if (type_size
!= -1)
1951 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1956 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1957 Return the proper type node for a given builtin type number. */
1959 static struct type
*
1960 rs6000_builtin_type (int typenum
)
1962 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1963 #define NUMBER_RECOGNIZED 34
1964 /* This includes an empty slot for type number -0. */
1965 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1966 struct type
*rettype
= NULL
;
1968 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1970 complaint (&symfile_complaints
, "Unknown builtin type %d", typenum
);
1971 return builtin_type_error
;
1973 if (negative_types
[-typenum
] != NULL
)
1974 return negative_types
[-typenum
];
1976 #if TARGET_CHAR_BIT != 8
1977 #error This code wrong for TARGET_CHAR_BIT not 8
1978 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1979 that if that ever becomes not true, the correct fix will be to
1980 make the size in the struct type to be in bits, not in units of
1987 /* The size of this and all the other types are fixed, defined
1988 by the debugging format. If there is a type called "int" which
1989 is other than 32 bits, then it should use a new negative type
1990 number (or avoid negative type numbers for that case).
1991 See stabs.texinfo. */
1992 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1995 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1998 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
2001 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
2004 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
2005 "unsigned char", NULL
);
2008 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
2011 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
2012 "unsigned short", NULL
);
2015 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2016 "unsigned int", NULL
);
2019 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2022 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2023 "unsigned long", NULL
);
2026 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
2029 /* IEEE single precision (32 bit). */
2030 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
2033 /* IEEE double precision (64 bit). */
2034 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
2037 /* This is an IEEE double on the RS/6000, and different machines with
2038 different sizes for "long double" should use different negative
2039 type numbers. See stabs.texinfo. */
2040 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
2043 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
2046 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2050 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
2053 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
2056 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
2059 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
2063 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
2067 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
2071 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2075 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2079 /* Complex type consisting of two IEEE single precision values. */
2080 rettype
= init_type (TYPE_CODE_COMPLEX
, 8, 0, "complex", NULL
);
2081 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 4, 0, "float",
2085 /* Complex type consisting of two IEEE double precision values. */
2086 rettype
= init_type (TYPE_CODE_COMPLEX
, 16, 0, "double complex", NULL
);
2087 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 8, 0, "double",
2091 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
2094 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
2097 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
2100 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
2103 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
2106 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2107 "unsigned long long", NULL
);
2110 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2114 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
2117 negative_types
[-typenum
] = rettype
;
2121 /* This page contains subroutines of read_type. */
2123 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2126 update_method_name_from_physname (char **old_name
, char *physname
)
2130 method_name
= method_name_from_physname (physname
);
2132 if (method_name
== NULL
)
2134 complaint (&symfile_complaints
,
2135 "Method has bad physname %s\n", physname
);
2139 if (strcmp (*old_name
, method_name
) != 0)
2142 *old_name
= method_name
;
2145 xfree (method_name
);
2148 /* Read member function stabs info for C++ classes. The form of each member
2151 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2153 An example with two member functions is:
2155 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2157 For the case of overloaded operators, the format is op$::*.funcs, where
2158 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2159 name (such as `+=') and `.' marks the end of the operator name.
2161 Returns 1 for success, 0 for failure. */
2164 read_member_functions (struct field_info
*fip
, char **pp
, struct type
*type
,
2165 struct objfile
*objfile
)
2169 /* Total number of member functions defined in this class. If the class
2170 defines two `f' functions, and one `g' function, then this will have
2172 int total_length
= 0;
2176 struct next_fnfield
*next
;
2177 struct fn_field fn_field
;
2180 struct type
*look_ahead_type
;
2181 struct next_fnfieldlist
*new_fnlist
;
2182 struct next_fnfield
*new_sublist
;
2186 /* Process each list until we find something that is not a member function
2187 or find the end of the functions. */
2191 /* We should be positioned at the start of the function name.
2192 Scan forward to find the first ':' and if it is not the
2193 first of a "::" delimiter, then this is not a member function. */
2205 look_ahead_type
= NULL
;
2208 new_fnlist
= (struct next_fnfieldlist
*)
2209 xmalloc (sizeof (struct next_fnfieldlist
));
2210 make_cleanup (xfree
, new_fnlist
);
2211 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2213 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
2215 /* This is a completely wierd case. In order to stuff in the
2216 names that might contain colons (the usual name delimiter),
2217 Mike Tiemann defined a different name format which is
2218 signalled if the identifier is "op$". In that case, the
2219 format is "op$::XXXX." where XXXX is the name. This is
2220 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2221 /* This lets the user type "break operator+".
2222 We could just put in "+" as the name, but that wouldn't
2224 static char opname
[32] = "op$";
2225 char *o
= opname
+ 3;
2227 /* Skip past '::'. */
2230 STABS_CONTINUE (pp
, objfile
);
2236 main_fn_name
= savestring (opname
, o
- opname
);
2242 main_fn_name
= savestring (*pp
, p
- *pp
);
2243 /* Skip past '::'. */
2246 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
2251 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2252 make_cleanup (xfree
, new_sublist
);
2253 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2255 /* Check for and handle cretinous dbx symbol name continuation! */
2256 if (look_ahead_type
== NULL
)
2259 STABS_CONTINUE (pp
, objfile
);
2261 new_sublist
->fn_field
.type
= read_type (pp
, objfile
);
2264 /* Invalid symtab info for member function. */
2270 /* g++ version 1 kludge */
2271 new_sublist
->fn_field
.type
= look_ahead_type
;
2272 look_ahead_type
= NULL
;
2282 /* If this is just a stub, then we don't have the real name here. */
2284 if (TYPE_STUB (new_sublist
->fn_field
.type
))
2286 if (!TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
))
2287 TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
) = type
;
2288 new_sublist
->fn_field
.is_stub
= 1;
2290 new_sublist
->fn_field
.physname
= savestring (*pp
, p
- *pp
);
2293 /* Set this member function's visibility fields. */
2296 case VISIBILITY_PRIVATE
:
2297 new_sublist
->fn_field
.is_private
= 1;
2299 case VISIBILITY_PROTECTED
:
2300 new_sublist
->fn_field
.is_protected
= 1;
2304 STABS_CONTINUE (pp
, objfile
);
2307 case 'A': /* Normal functions. */
2308 new_sublist
->fn_field
.is_const
= 0;
2309 new_sublist
->fn_field
.is_volatile
= 0;
2312 case 'B': /* `const' member functions. */
2313 new_sublist
->fn_field
.is_const
= 1;
2314 new_sublist
->fn_field
.is_volatile
= 0;
2317 case 'C': /* `volatile' member function. */
2318 new_sublist
->fn_field
.is_const
= 0;
2319 new_sublist
->fn_field
.is_volatile
= 1;
2322 case 'D': /* `const volatile' member function. */
2323 new_sublist
->fn_field
.is_const
= 1;
2324 new_sublist
->fn_field
.is_volatile
= 1;
2327 case '*': /* File compiled with g++ version 1 -- no info */
2332 complaint (&symfile_complaints
,
2333 "const/volatile indicator missing, got '%c'", **pp
);
2342 /* virtual member function, followed by index.
2343 The sign bit is set to distinguish pointers-to-methods
2344 from virtual function indicies. Since the array is
2345 in words, the quantity must be shifted left by 1
2346 on 16 bit machine, and by 2 on 32 bit machine, forcing
2347 the sign bit out, and usable as a valid index into
2348 the array. Remove the sign bit here. */
2349 new_sublist
->fn_field
.voffset
=
2350 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2354 STABS_CONTINUE (pp
, objfile
);
2355 if (**pp
== ';' || **pp
== '\0')
2357 /* Must be g++ version 1. */
2358 new_sublist
->fn_field
.fcontext
= 0;
2362 /* Figure out from whence this virtual function came.
2363 It may belong to virtual function table of
2364 one of its baseclasses. */
2365 look_ahead_type
= read_type (pp
, objfile
);
2368 /* g++ version 1 overloaded methods. */
2372 new_sublist
->fn_field
.fcontext
= look_ahead_type
;
2381 look_ahead_type
= NULL
;
2387 /* static member function. */
2389 int slen
= strlen (main_fn_name
);
2391 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
2393 /* For static member functions, we can't tell if they
2394 are stubbed, as they are put out as functions, and not as
2396 GCC v2 emits the fully mangled name if
2397 dbxout.c:flag_minimal_debug is not set, so we have to
2398 detect a fully mangled physname here and set is_stub
2399 accordingly. Fully mangled physnames in v2 start with
2400 the member function name, followed by two underscores.
2401 GCC v3 currently always emits stubbed member functions,
2402 but with fully mangled physnames, which start with _Z. */
2403 if (!(strncmp (new_sublist
->fn_field
.physname
,
2404 main_fn_name
, slen
) == 0
2405 && new_sublist
->fn_field
.physname
[slen
] == '_'
2406 && new_sublist
->fn_field
.physname
[slen
+ 1] == '_'))
2408 new_sublist
->fn_field
.is_stub
= 1;
2415 complaint (&symfile_complaints
,
2416 "member function type missing, got '%c'", (*pp
)[-1]);
2417 /* Fall through into normal member function. */
2420 /* normal member function. */
2421 new_sublist
->fn_field
.voffset
= 0;
2422 new_sublist
->fn_field
.fcontext
= 0;
2426 new_sublist
->next
= sublist
;
2427 sublist
= new_sublist
;
2429 STABS_CONTINUE (pp
, objfile
);
2431 while (**pp
!= ';' && **pp
!= '\0');
2434 STABS_CONTINUE (pp
, objfile
);
2436 /* Skip GCC 3.X member functions which are duplicates of the callable
2437 constructor/destructor. */
2438 if (strcmp (main_fn_name
, "__base_ctor") == 0
2439 || strcmp (main_fn_name
, "__base_dtor") == 0
2440 || strcmp (main_fn_name
, "__deleting_dtor") == 0)
2442 xfree (main_fn_name
);
2447 int has_destructor
= 0, has_other
= 0;
2449 struct next_fnfield
*tmp_sublist
;
2451 /* Various versions of GCC emit various mostly-useless
2452 strings in the name field for special member functions.
2454 For stub methods, we need to defer correcting the name
2455 until we are ready to unstub the method, because the current
2456 name string is used by gdb_mangle_name. The only stub methods
2457 of concern here are GNU v2 operators; other methods have their
2458 names correct (see caveat below).
2460 For non-stub methods, in GNU v3, we have a complete physname.
2461 Therefore we can safely correct the name now. This primarily
2462 affects constructors and destructors, whose name will be
2463 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2464 operators will also have incorrect names; for instance,
2465 "operator int" will be named "operator i" (i.e. the type is
2468 For non-stub methods in GNU v2, we have no easy way to
2469 know if we have a complete physname or not. For most
2470 methods the result depends on the platform (if CPLUS_MARKER
2471 can be `$' or `.', it will use minimal debug information, or
2472 otherwise the full physname will be included).
2474 Rather than dealing with this, we take a different approach.
2475 For v3 mangled names, we can use the full physname; for v2,
2476 we use cplus_demangle_opname (which is actually v2 specific),
2477 because the only interesting names are all operators - once again
2478 barring the caveat below. Skip this process if any method in the
2479 group is a stub, to prevent our fouling up the workings of
2482 The caveat: GCC 2.95.x (and earlier?) put constructors and
2483 destructors in the same method group. We need to split this
2484 into two groups, because they should have different names.
2485 So for each method group we check whether it contains both
2486 routines whose physname appears to be a destructor (the physnames
2487 for and destructors are always provided, due to quirks in v2
2488 mangling) and routines whose physname does not appear to be a
2489 destructor. If so then we break up the list into two halves.
2490 Even if the constructors and destructors aren't in the same group
2491 the destructor will still lack the leading tilde, so that also
2494 So, to summarize what we expect and handle here:
2496 Given Given Real Real Action
2497 method name physname physname method name
2499 __opi [none] __opi__3Foo operator int opname
2501 Foo _._3Foo _._3Foo ~Foo separate and
2503 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2504 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2507 tmp_sublist
= sublist
;
2508 while (tmp_sublist
!= NULL
)
2510 if (tmp_sublist
->fn_field
.is_stub
)
2512 if (tmp_sublist
->fn_field
.physname
[0] == '_'
2513 && tmp_sublist
->fn_field
.physname
[1] == 'Z')
2516 if (is_destructor_name (tmp_sublist
->fn_field
.physname
))
2521 tmp_sublist
= tmp_sublist
->next
;
2524 if (has_destructor
&& has_other
)
2526 struct next_fnfieldlist
*destr_fnlist
;
2527 struct next_fnfield
*last_sublist
;
2529 /* Create a new fn_fieldlist for the destructors. */
2531 destr_fnlist
= (struct next_fnfieldlist
*)
2532 xmalloc (sizeof (struct next_fnfieldlist
));
2533 make_cleanup (xfree
, destr_fnlist
);
2534 memset (destr_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2535 destr_fnlist
->fn_fieldlist
.name
2536 = obconcat (&objfile
->type_obstack
, "", "~",
2537 new_fnlist
->fn_fieldlist
.name
);
2539 destr_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2540 obstack_alloc (&objfile
->type_obstack
,
2541 sizeof (struct fn_field
) * has_destructor
);
2542 memset (destr_fnlist
->fn_fieldlist
.fn_fields
, 0,
2543 sizeof (struct fn_field
) * has_destructor
);
2544 tmp_sublist
= sublist
;
2545 last_sublist
= NULL
;
2547 while (tmp_sublist
!= NULL
)
2549 if (!is_destructor_name (tmp_sublist
->fn_field
.physname
))
2551 tmp_sublist
= tmp_sublist
->next
;
2555 destr_fnlist
->fn_fieldlist
.fn_fields
[i
++]
2556 = tmp_sublist
->fn_field
;
2558 last_sublist
->next
= tmp_sublist
->next
;
2560 sublist
= tmp_sublist
->next
;
2561 last_sublist
= tmp_sublist
;
2562 tmp_sublist
= tmp_sublist
->next
;
2565 destr_fnlist
->fn_fieldlist
.length
= has_destructor
;
2566 destr_fnlist
->next
= fip
->fnlist
;
2567 fip
->fnlist
= destr_fnlist
;
2569 total_length
+= has_destructor
;
2570 length
-= has_destructor
;
2574 /* v3 mangling prevents the use of abbreviated physnames,
2575 so we can do this here. There are stubbed methods in v3
2577 - in -gstabs instead of -gstabs+
2578 - or for static methods, which are output as a function type
2579 instead of a method type. */
2581 update_method_name_from_physname (&new_fnlist
->fn_fieldlist
.name
,
2582 sublist
->fn_field
.physname
);
2584 else if (has_destructor
&& new_fnlist
->fn_fieldlist
.name
[0] != '~')
2586 new_fnlist
->fn_fieldlist
.name
= concat ("~", main_fn_name
, NULL
);
2587 xfree (main_fn_name
);
2591 char dem_opname
[256];
2593 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2594 dem_opname
, DMGL_ANSI
);
2596 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2599 new_fnlist
->fn_fieldlist
.name
2600 = obsavestring (dem_opname
, strlen (dem_opname
),
2601 &objfile
->type_obstack
);
2604 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2605 obstack_alloc (&objfile
->type_obstack
,
2606 sizeof (struct fn_field
) * length
);
2607 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
2608 sizeof (struct fn_field
) * length
);
2609 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
2611 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
2614 new_fnlist
->fn_fieldlist
.length
= length
;
2615 new_fnlist
->next
= fip
->fnlist
;
2616 fip
->fnlist
= new_fnlist
;
2618 total_length
+= length
;
2624 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2625 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2626 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2627 memset (TYPE_FN_FIELDLISTS (type
), 0,
2628 sizeof (struct fn_fieldlist
) * nfn_fields
);
2629 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2630 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2636 /* Special GNU C++ name.
2638 Returns 1 for success, 0 for failure. "failure" means that we can't
2639 keep parsing and it's time for error_type(). */
2642 read_cpp_abbrev (struct field_info
*fip
, char **pp
, struct type
*type
,
2643 struct objfile
*objfile
)
2648 struct type
*context
;
2658 /* At this point, *pp points to something like "22:23=*22...",
2659 where the type number before the ':' is the "context" and
2660 everything after is a regular type definition. Lookup the
2661 type, find it's name, and construct the field name. */
2663 context
= read_type (pp
, objfile
);
2667 case 'f': /* $vf -- a virtual function table pointer */
2668 name
= type_name_no_tag (context
);
2673 fip
->list
->field
.name
=
2674 obconcat (&objfile
->type_obstack
, vptr_name
, name
, "");
2677 case 'b': /* $vb -- a virtual bsomethingorother */
2678 name
= type_name_no_tag (context
);
2681 complaint (&symfile_complaints
,
2682 "C++ abbreviated type name unknown at symtab pos %d",
2686 fip
->list
->field
.name
=
2687 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2691 invalid_cpp_abbrev_complaint (*pp
);
2692 fip
->list
->field
.name
=
2693 obconcat (&objfile
->type_obstack
,
2694 "INVALID_CPLUSPLUS_ABBREV", "", "");
2698 /* At this point, *pp points to the ':'. Skip it and read the
2704 invalid_cpp_abbrev_complaint (*pp
);
2707 fip
->list
->field
.type
= read_type (pp
, objfile
);
2709 (*pp
)++; /* Skip the comma. */
2715 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
2719 /* This field is unpacked. */
2720 FIELD_BITSIZE (fip
->list
->field
) = 0;
2721 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2725 invalid_cpp_abbrev_complaint (*pp
);
2726 /* We have no idea what syntax an unrecognized abbrev would have, so
2727 better return 0. If we returned 1, we would need to at least advance
2728 *pp to avoid an infinite loop. */
2735 read_one_struct_field (struct field_info
*fip
, char **pp
, char *p
,
2736 struct type
*type
, struct objfile
*objfile
)
2738 fip
->list
->field
.name
=
2739 obsavestring (*pp
, p
- *pp
, &objfile
->type_obstack
);
2742 /* This means we have a visibility for a field coming. */
2746 fip
->list
->visibility
= *(*pp
)++;
2750 /* normal dbx-style format, no explicit visibility */
2751 fip
->list
->visibility
= VISIBILITY_PUBLIC
;
2754 fip
->list
->field
.type
= read_type (pp
, objfile
);
2759 /* Possible future hook for nested types. */
2762 fip
->list
->field
.bitpos
= (long) -2; /* nested type */
2772 /* Static class member. */
2773 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (*pp
, p
- *pp
));
2777 else if (**pp
!= ',')
2779 /* Bad structure-type format. */
2780 stabs_general_complaint ("bad structure-type format");
2784 (*pp
)++; /* Skip the comma. */
2788 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ',', &nbits
);
2791 stabs_general_complaint ("bad structure-type format");
2794 FIELD_BITSIZE (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
2797 stabs_general_complaint ("bad structure-type format");
2802 if (FIELD_BITPOS (fip
->list
->field
) == 0
2803 && FIELD_BITSIZE (fip
->list
->field
) == 0)
2805 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2806 it is a field which has been optimized out. The correct stab for
2807 this case is to use VISIBILITY_IGNORE, but that is a recent
2808 invention. (2) It is a 0-size array. For example
2809 union { int num; char str[0]; } foo. Printing "<no value>" for
2810 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2811 will continue to work, and a 0-size array as a whole doesn't
2812 have any contents to print.
2814 I suspect this probably could also happen with gcc -gstabs (not
2815 -gstabs+) for static fields, and perhaps other C++ extensions.
2816 Hopefully few people use -gstabs with gdb, since it is intended
2817 for dbx compatibility. */
2819 /* Ignore this field. */
2820 fip
->list
->visibility
= VISIBILITY_IGNORE
;
2824 /* Detect an unpacked field and mark it as such.
2825 dbx gives a bit size for all fields.
2826 Note that forward refs cannot be packed,
2827 and treat enums as if they had the width of ints. */
2829 struct type
*field_type
= check_typedef (FIELD_TYPE (fip
->list
->field
));
2831 if (TYPE_CODE (field_type
) != TYPE_CODE_INT
2832 && TYPE_CODE (field_type
) != TYPE_CODE_RANGE
2833 && TYPE_CODE (field_type
) != TYPE_CODE_BOOL
2834 && TYPE_CODE (field_type
) != TYPE_CODE_ENUM
)
2836 FIELD_BITSIZE (fip
->list
->field
) = 0;
2838 if ((FIELD_BITSIZE (fip
->list
->field
)
2839 == TARGET_CHAR_BIT
* TYPE_LENGTH (field_type
)
2840 || (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
2841 && FIELD_BITSIZE (fip
->list
->field
) == TARGET_INT_BIT
)
2844 FIELD_BITPOS (fip
->list
->field
) % 8 == 0)
2846 FIELD_BITSIZE (fip
->list
->field
) = 0;
2852 /* Read struct or class data fields. They have the form:
2854 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2856 At the end, we see a semicolon instead of a field.
2858 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2861 The optional VISIBILITY is one of:
2863 '/0' (VISIBILITY_PRIVATE)
2864 '/1' (VISIBILITY_PROTECTED)
2865 '/2' (VISIBILITY_PUBLIC)
2866 '/9' (VISIBILITY_IGNORE)
2868 or nothing, for C style fields with public visibility.
2870 Returns 1 for success, 0 for failure. */
2873 read_struct_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
2874 struct objfile
*objfile
)
2877 struct nextfield
*new;
2879 /* We better set p right now, in case there are no fields at all... */
2883 /* Read each data member type until we find the terminating ';' at the end of
2884 the data member list, or break for some other reason such as finding the
2885 start of the member function list. */
2886 /* Stab string for structure/union does not end with two ';' in
2887 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
2889 while (**pp
!= ';' && **pp
!= '\0')
2891 STABS_CONTINUE (pp
, objfile
);
2892 /* Get space to record the next field's data. */
2893 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2894 make_cleanup (xfree
, new);
2895 memset (new, 0, sizeof (struct nextfield
));
2896 new->next
= fip
->list
;
2899 /* Get the field name. */
2902 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2903 unless the CPLUS_MARKER is followed by an underscore, in
2904 which case it is just the name of an anonymous type, which we
2905 should handle like any other type name. */
2907 if (is_cplus_marker (p
[0]) && p
[1] != '_')
2909 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2914 /* Look for the ':' that separates the field name from the field
2915 values. Data members are delimited by a single ':', while member
2916 functions are delimited by a pair of ':'s. When we hit the member
2917 functions (if any), terminate scan loop and return. */
2919 while (*p
!= ':' && *p
!= '\0')
2926 /* Check to see if we have hit the member functions yet. */
2931 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2933 if (p
[0] == ':' && p
[1] == ':')
2935 /* (the deleted) chill the list of fields: the last entry (at
2936 the head) is a partially constructed entry which we now
2938 fip
->list
= fip
->list
->next
;
2943 /* The stabs for C++ derived classes contain baseclass information which
2944 is marked by a '!' character after the total size. This function is
2945 called when we encounter the baseclass marker, and slurps up all the
2946 baseclass information.
2948 Immediately following the '!' marker is the number of base classes that
2949 the class is derived from, followed by information for each base class.
2950 For each base class, there are two visibility specifiers, a bit offset
2951 to the base class information within the derived class, a reference to
2952 the type for the base class, and a terminating semicolon.
2954 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2956 Baseclass information marker __________________|| | | | | | |
2957 Number of baseclasses __________________________| | | | | | |
2958 Visibility specifiers (2) ________________________| | | | | |
2959 Offset in bits from start of class _________________| | | | |
2960 Type number for base class ___________________________| | | |
2961 Visibility specifiers (2) _______________________________| | |
2962 Offset in bits from start of class ________________________| |
2963 Type number of base class ____________________________________|
2965 Return 1 for success, 0 for (error-type-inducing) failure. */
2971 read_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
2972 struct objfile
*objfile
)
2975 struct nextfield
*new;
2983 /* Skip the '!' baseclass information marker. */
2987 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2990 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2996 /* Some stupid compilers have trouble with the following, so break
2997 it up into simpler expressions. */
2998 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2999 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
3002 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
3005 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
3006 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
3010 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
3012 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
3014 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3015 make_cleanup (xfree
, new);
3016 memset (new, 0, sizeof (struct nextfield
));
3017 new->next
= fip
->list
;
3019 FIELD_BITSIZE (new->field
) = 0; /* this should be an unpacked field! */
3021 STABS_CONTINUE (pp
, objfile
);
3025 /* Nothing to do. */
3028 SET_TYPE_FIELD_VIRTUAL (type
, i
);
3031 /* Unknown character. Complain and treat it as non-virtual. */
3033 complaint (&symfile_complaints
,
3034 "Unknown virtual character `%c' for baseclass", **pp
);
3039 new->visibility
= *(*pp
)++;
3040 switch (new->visibility
)
3042 case VISIBILITY_PRIVATE
:
3043 case VISIBILITY_PROTECTED
:
3044 case VISIBILITY_PUBLIC
:
3047 /* Bad visibility format. Complain and treat it as
3050 complaint (&symfile_complaints
,
3051 "Unknown visibility `%c' for baseclass",
3053 new->visibility
= VISIBILITY_PUBLIC
;
3060 /* The remaining value is the bit offset of the portion of the object
3061 corresponding to this baseclass. Always zero in the absence of
3062 multiple inheritance. */
3064 FIELD_BITPOS (new->field
) = read_huge_number (pp
, ',', &nbits
);
3069 /* The last piece of baseclass information is the type of the
3070 base class. Read it, and remember it's type name as this
3073 new->field
.type
= read_type (pp
, objfile
);
3074 new->field
.name
= type_name_no_tag (new->field
.type
);
3076 /* skip trailing ';' and bump count of number of fields seen */
3085 /* The tail end of stabs for C++ classes that contain a virtual function
3086 pointer contains a tilde, a %, and a type number.
3087 The type number refers to the base class (possibly this class itself) which
3088 contains the vtable pointer for the current class.
3090 This function is called when we have parsed all the method declarations,
3091 so we can look for the vptr base class info. */
3094 read_tilde_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3095 struct objfile
*objfile
)
3099 STABS_CONTINUE (pp
, objfile
);
3101 /* If we are positioned at a ';', then skip it. */
3111 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
3113 /* Obsolete flags that used to indicate the presence
3114 of constructors and/or destructors. */
3118 /* Read either a '%' or the final ';'. */
3119 if (*(*pp
)++ == '%')
3121 /* The next number is the type number of the base class
3122 (possibly our own class) which supplies the vtable for
3123 this class. Parse it out, and search that class to find
3124 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3125 and TYPE_VPTR_FIELDNO. */
3130 t
= read_type (pp
, objfile
);
3132 while (*p
!= '\0' && *p
!= ';')
3138 /* Premature end of symbol. */
3142 TYPE_VPTR_BASETYPE (type
) = t
;
3143 if (type
== t
) /* Our own class provides vtbl ptr */
3145 for (i
= TYPE_NFIELDS (t
) - 1;
3146 i
>= TYPE_N_BASECLASSES (t
);
3149 char *name
= TYPE_FIELD_NAME (t
, i
);
3150 if (!strncmp (name
, vptr_name
, sizeof (vptr_name
) - 2)
3151 && is_cplus_marker (name
[sizeof (vptr_name
) - 2]))
3153 TYPE_VPTR_FIELDNO (type
) = i
;
3157 /* Virtual function table field not found. */
3158 complaint (&symfile_complaints
,
3159 "virtual function table pointer not found when defining class `%s'",
3165 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
3176 attach_fn_fields_to_type (struct field_info
*fip
, struct type
*type
)
3180 for (n
= TYPE_NFN_FIELDS (type
);
3181 fip
->fnlist
!= NULL
;
3182 fip
->fnlist
= fip
->fnlist
->next
)
3184 --n
; /* Circumvent Sun3 compiler bug */
3185 TYPE_FN_FIELDLISTS (type
)[n
] = fip
->fnlist
->fn_fieldlist
;
3190 /* Create the vector of fields, and record how big it is.
3191 We need this info to record proper virtual function table information
3192 for this class's virtual functions. */
3195 attach_fields_to_type (struct field_info
*fip
, struct type
*type
,
3196 struct objfile
*objfile
)
3199 int non_public_fields
= 0;
3200 struct nextfield
*scan
;
3202 /* Count up the number of fields that we have, as well as taking note of
3203 whether or not there are any non-public fields, which requires us to
3204 allocate and build the private_field_bits and protected_field_bits
3207 for (scan
= fip
->list
; scan
!= NULL
; scan
= scan
->next
)
3210 if (scan
->visibility
!= VISIBILITY_PUBLIC
)
3212 non_public_fields
++;
3216 /* Now we know how many fields there are, and whether or not there are any
3217 non-public fields. Record the field count, allocate space for the
3218 array of fields, and create blank visibility bitfields if necessary. */
3220 TYPE_NFIELDS (type
) = nfields
;
3221 TYPE_FIELDS (type
) = (struct field
*)
3222 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
3223 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
3225 if (non_public_fields
)
3227 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3229 TYPE_FIELD_PRIVATE_BITS (type
) =
3230 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3231 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
3233 TYPE_FIELD_PROTECTED_BITS (type
) =
3234 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3235 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
3237 TYPE_FIELD_IGNORE_BITS (type
) =
3238 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3239 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
3242 /* Copy the saved-up fields into the field vector. Start from the head
3243 of the list, adding to the tail of the field array, so that they end
3244 up in the same order in the array in which they were added to the list. */
3246 while (nfields
-- > 0)
3248 TYPE_FIELD (type
, nfields
) = fip
->list
->field
;
3249 switch (fip
->list
->visibility
)
3251 case VISIBILITY_PRIVATE
:
3252 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
3255 case VISIBILITY_PROTECTED
:
3256 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
3259 case VISIBILITY_IGNORE
:
3260 SET_TYPE_FIELD_IGNORE (type
, nfields
);
3263 case VISIBILITY_PUBLIC
:
3267 /* Unknown visibility. Complain and treat it as public. */
3269 complaint (&symfile_complaints
, "Unknown visibility `%c' for field",
3270 fip
->list
->visibility
);
3274 fip
->list
= fip
->list
->next
;
3280 /* Complain that the compiler has emitted more than one definition for the
3281 structure type TYPE. */
3283 complain_about_struct_wipeout (struct type
*type
)
3288 if (TYPE_TAG_NAME (type
))
3290 name
= TYPE_TAG_NAME (type
);
3291 switch (TYPE_CODE (type
))
3293 case TYPE_CODE_STRUCT
: kind
= "struct "; break;
3294 case TYPE_CODE_UNION
: kind
= "union "; break;
3295 case TYPE_CODE_ENUM
: kind
= "enum "; break;
3299 else if (TYPE_NAME (type
))
3301 name
= TYPE_NAME (type
);
3310 complaint (&symfile_complaints
,
3311 "struct/union type gets multiply defined: %s%s", kind
, name
);
3315 /* Read the description of a structure (or union type) and return an object
3316 describing the type.
3318 PP points to a character pointer that points to the next unconsumed token
3319 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3320 *PP will point to "4a:1,0,32;;".
3322 TYPE points to an incomplete type that needs to be filled in.
3324 OBJFILE points to the current objfile from which the stabs information is
3325 being read. (Note that it is redundant in that TYPE also contains a pointer
3326 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3329 static struct type
*
3330 read_struct_type (char **pp
, struct type
*type
, enum type_code type_code
,
3331 struct objfile
*objfile
)
3333 struct cleanup
*back_to
;
3334 struct field_info fi
;
3339 /* When describing struct/union/class types in stabs, G++ always drops
3340 all qualifications from the name. So if you've got:
3341 struct A { ... struct B { ... }; ... };
3342 then G++ will emit stabs for `struct A::B' that call it simply
3343 `struct B'. Obviously, if you've got a real top-level definition for
3344 `struct B', or other nested definitions, this is going to cause
3347 Obviously, GDB can't fix this by itself, but it can at least avoid
3348 scribbling on existing structure type objects when new definitions
3350 if (! (TYPE_CODE (type
) == TYPE_CODE_UNDEF
3351 || TYPE_STUB (type
)))
3353 complain_about_struct_wipeout (type
);
3355 /* It's probably best to return the type unchanged. */
3359 back_to
= make_cleanup (null_cleanup
, 0);
3361 INIT_CPLUS_SPECIFIC (type
);
3362 TYPE_CODE (type
) = type_code
;
3363 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3365 /* First comes the total size in bytes. */
3369 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
3371 return error_type (pp
, objfile
);
3374 /* Now read the baseclasses, if any, read the regular C struct or C++
3375 class member fields, attach the fields to the type, read the C++
3376 member functions, attach them to the type, and then read any tilde
3377 field (baseclass specifier for the class holding the main vtable). */
3379 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
3380 || !read_struct_fields (&fi
, pp
, type
, objfile
)
3381 || !attach_fields_to_type (&fi
, type
, objfile
)
3382 || !read_member_functions (&fi
, pp
, type
, objfile
)
3383 || !attach_fn_fields_to_type (&fi
, type
)
3384 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
3386 type
= error_type (pp
, objfile
);
3389 do_cleanups (back_to
);
3393 /* Read a definition of an array type,
3394 and create and return a suitable type object.
3395 Also creates a range type which represents the bounds of that
3398 static struct type
*
3399 read_array_type (char **pp
, struct type
*type
,
3400 struct objfile
*objfile
)
3402 struct type
*index_type
, *element_type
, *range_type
;
3407 /* Format of an array type:
3408 "ar<index type>;lower;upper;<array_contents_type>".
3409 OS9000: "arlower,upper;<array_contents_type>".
3411 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3412 for these, produce a type like float[][]. */
3415 index_type
= read_type (pp
, objfile
);
3417 /* Improper format of array type decl. */
3418 return error_type (pp
, objfile
);
3422 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3427 lower
= read_huge_number (pp
, ';', &nbits
);
3430 return error_type (pp
, objfile
);
3432 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3437 upper
= read_huge_number (pp
, ';', &nbits
);
3439 return error_type (pp
, objfile
);
3441 element_type
= read_type (pp
, objfile
);
3450 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3451 type
= create_array_type (type
, element_type
, range_type
);
3457 /* Read a definition of an enumeration type,
3458 and create and return a suitable type object.
3459 Also defines the symbols that represent the values of the type. */
3461 static struct type
*
3462 read_enum_type (char **pp
, struct type
*type
,
3463 struct objfile
*objfile
)
3470 struct pending
**symlist
;
3471 struct pending
*osyms
, *syms
;
3474 int unsigned_enum
= 1;
3477 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3478 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3479 to do? For now, force all enum values to file scope. */
3480 if (within_function
)
3481 symlist
= &local_symbols
;
3484 symlist
= &file_symbols
;
3486 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3488 /* The aix4 compiler emits an extra field before the enum members;
3489 my guess is it's a type of some sort. Just ignore it. */
3492 /* Skip over the type. */
3496 /* Skip over the colon. */
3500 /* Read the value-names and their values.
3501 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3502 A semicolon or comma instead of a NAME means the end. */
3503 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3505 STABS_CONTINUE (pp
, objfile
);
3509 name
= obsavestring (*pp
, p
- *pp
, &objfile
->symbol_obstack
);
3511 n
= read_huge_number (pp
, ',', &nbits
);
3513 return error_type (pp
, objfile
);
3515 sym
= (struct symbol
*)
3516 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
3517 memset (sym
, 0, sizeof (struct symbol
));
3518 DEPRECATED_SYMBOL_NAME (sym
) = name
;
3519 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
3520 SYMBOL_CLASS (sym
) = LOC_CONST
;
3521 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
3522 SYMBOL_VALUE (sym
) = n
;
3525 add_symbol_to_list (sym
, symlist
);
3530 (*pp
)++; /* Skip the semicolon. */
3532 /* Now fill in the fields of the type-structure. */
3534 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3535 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3536 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3538 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3539 TYPE_NFIELDS (type
) = nsyms
;
3540 TYPE_FIELDS (type
) = (struct field
*)
3541 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3542 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3544 /* Find the symbols for the values and put them into the type.
3545 The symbols can be found in the symlist that we put them on
3546 to cause them to be defined. osyms contains the old value
3547 of that symlist; everything up to there was defined by us. */
3548 /* Note that we preserve the order of the enum constants, so
3549 that in something like "enum {FOO, LAST_THING=FOO}" we print
3550 FOO, not LAST_THING. */
3552 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3554 int last
= syms
== osyms
? o_nsyms
: 0;
3555 int j
= syms
->nsyms
;
3556 for (; --j
>= last
; --n
)
3558 struct symbol
*xsym
= syms
->symbol
[j
];
3559 SYMBOL_TYPE (xsym
) = type
;
3560 TYPE_FIELD_NAME (type
, n
) = DEPRECATED_SYMBOL_NAME (xsym
);
3561 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3562 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3571 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3572 typedefs in every file (for int, long, etc):
3574 type = b <signed> <width> <format type>; <offset>; <nbits>
3576 optional format type = c or b for char or boolean.
3577 offset = offset from high order bit to start bit of type.
3578 width is # bytes in object of this type, nbits is # bits in type.
3580 The width/offset stuff appears to be for small objects stored in
3581 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3584 static struct type
*
3585 read_sun_builtin_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3590 enum type_code code
= TYPE_CODE_INT
;
3601 return error_type (pp
, objfile
);
3605 /* For some odd reason, all forms of char put a c here. This is strange
3606 because no other type has this honor. We can safely ignore this because
3607 we actually determine 'char'acterness by the number of bits specified in
3609 Boolean forms, e.g Fortran logical*X, put a b here. */
3613 else if (**pp
== 'b')
3615 code
= TYPE_CODE_BOOL
;
3619 /* The first number appears to be the number of bytes occupied
3620 by this type, except that unsigned short is 4 instead of 2.
3621 Since this information is redundant with the third number,
3622 we will ignore it. */
3623 read_huge_number (pp
, ';', &nbits
);
3625 return error_type (pp
, objfile
);
3627 /* The second number is always 0, so ignore it too. */
3628 read_huge_number (pp
, ';', &nbits
);
3630 return error_type (pp
, objfile
);
3632 /* The third number is the number of bits for this type. */
3633 type_bits
= read_huge_number (pp
, 0, &nbits
);
3635 return error_type (pp
, objfile
);
3636 /* The type *should* end with a semicolon. If it are embedded
3637 in a larger type the semicolon may be the only way to know where
3638 the type ends. If this type is at the end of the stabstring we
3639 can deal with the omitted semicolon (but we don't have to like
3640 it). Don't bother to complain(), Sun's compiler omits the semicolon
3646 return init_type (TYPE_CODE_VOID
, 1,
3647 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3650 return init_type (code
,
3651 type_bits
/ TARGET_CHAR_BIT
,
3652 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3656 static struct type
*
3657 read_sun_floating_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3662 struct type
*rettype
;
3664 /* The first number has more details about the type, for example
3666 details
= read_huge_number (pp
, ';', &nbits
);
3668 return error_type (pp
, objfile
);
3670 /* The second number is the number of bytes occupied by this type */
3671 nbytes
= read_huge_number (pp
, ';', &nbits
);
3673 return error_type (pp
, objfile
);
3675 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3676 || details
== NF_COMPLEX32
)
3678 rettype
= init_type (TYPE_CODE_COMPLEX
, nbytes
, 0, NULL
, objfile
);
3679 TYPE_TARGET_TYPE (rettype
)
3680 = init_type (TYPE_CODE_FLT
, nbytes
/ 2, 0, NULL
, objfile
);
3684 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3687 /* Read a number from the string pointed to by *PP.
3688 The value of *PP is advanced over the number.
3689 If END is nonzero, the character that ends the
3690 number must match END, or an error happens;
3691 and that character is skipped if it does match.
3692 If END is zero, *PP is left pointing to that character.
3694 If the number fits in a long, set *BITS to 0 and return the value.
3695 If not, set *BITS to be the number of bits in the number and return 0.
3697 If encounter garbage, set *BITS to -1 and return 0. */
3700 read_huge_number (char **pp
, int end
, int *bits
)
3717 /* Leading zero means octal. GCC uses this to output values larger
3718 than an int (because that would be hard in decimal). */
3725 upper_limit
= LONG_MAX
/ radix
;
3727 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3729 if (n
<= upper_limit
)
3732 n
+= c
- '0'; /* FIXME this overflows anyway */
3737 /* This depends on large values being output in octal, which is
3744 /* Ignore leading zeroes. */
3748 else if (c
== '2' || c
== '3')
3774 /* Large decimal constants are an error (because it is hard to
3775 count how many bits are in them). */
3781 /* -0x7f is the same as 0x80. So deal with it by adding one to
3782 the number of bits. */
3794 /* It's *BITS which has the interesting information. */
3798 static struct type
*
3799 read_range_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3801 char *orig_pp
= *pp
;
3806 struct type
*result_type
;
3807 struct type
*index_type
= NULL
;
3809 /* First comes a type we are a subrange of.
3810 In C it is usually 0, 1 or the type being defined. */
3811 if (read_type_number (pp
, rangenums
) != 0)
3812 return error_type (pp
, objfile
);
3813 self_subrange
= (rangenums
[0] == typenums
[0] &&
3814 rangenums
[1] == typenums
[1]);
3819 index_type
= read_type (pp
, objfile
);
3822 /* A semicolon should now follow; skip it. */
3826 /* The remaining two operands are usually lower and upper bounds
3827 of the range. But in some special cases they mean something else. */
3828 n2
= read_huge_number (pp
, ';', &n2bits
);
3829 n3
= read_huge_number (pp
, ';', &n3bits
);
3831 if (n2bits
== -1 || n3bits
== -1)
3832 return error_type (pp
, objfile
);
3835 goto handle_true_range
;
3837 /* If limits are huge, must be large integral type. */
3838 if (n2bits
!= 0 || n3bits
!= 0)
3840 char got_signed
= 0;
3841 char got_unsigned
= 0;
3842 /* Number of bits in the type. */
3845 /* Range from 0 to <large number> is an unsigned large integral type. */
3846 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3851 /* Range from <large number> to <large number>-1 is a large signed
3852 integral type. Take care of the case where <large number> doesn't
3853 fit in a long but <large number>-1 does. */
3854 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3855 || (n2bits
!= 0 && n3bits
== 0
3856 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3863 if (got_signed
|| got_unsigned
)
3865 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3866 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3870 return error_type (pp
, objfile
);
3873 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3874 if (self_subrange
&& n2
== 0 && n3
== 0)
3875 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3877 /* If n3 is zero and n2 is positive, we want a floating type, and n2
3878 is the width in bytes.
3880 Fortran programs appear to use this for complex types also. To
3881 distinguish between floats and complex, g77 (and others?) seem
3882 to use self-subranges for the complexes, and subranges of int for
3885 Also note that for complexes, g77 sets n2 to the size of one of
3886 the member floats, not the whole complex beast. My guess is that
3887 this was to work well with pre-COMPLEX versions of gdb. */
3889 if (n3
== 0 && n2
> 0)
3891 struct type
*float_type
3892 = init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3896 struct type
*complex_type
=
3897 init_type (TYPE_CODE_COMPLEX
, 2 * n2
, 0, NULL
, objfile
);
3898 TYPE_TARGET_TYPE (complex_type
) = float_type
;
3899 return complex_type
;
3905 /* If the upper bound is -1, it must really be an unsigned int. */
3907 else if (n2
== 0 && n3
== -1)
3909 /* It is unsigned int or unsigned long. */
3910 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3911 compatibility hack. */
3912 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3913 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3916 /* Special case: char is defined (Who knows why) as a subrange of
3917 itself with range 0-127. */
3918 else if (self_subrange
&& n2
== 0 && n3
== 127)
3919 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_NOSIGN
, NULL
, objfile
);
3921 /* We used to do this only for subrange of self or subrange of int. */
3924 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3925 "unsigned long", and we already checked for that,
3926 so don't need to test for it here. */
3929 /* n3 actually gives the size. */
3930 return init_type (TYPE_CODE_INT
, -n3
, TYPE_FLAG_UNSIGNED
,
3933 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
3934 unsigned n-byte integer. But do require n to be a power of
3935 two; we don't want 3- and 5-byte integers flying around. */
3941 for (bytes
= 0; (bits
& 0xff) == 0xff; bytes
++)
3944 && ((bytes
- 1) & bytes
) == 0) /* "bytes is a power of two" */
3945 return init_type (TYPE_CODE_INT
, bytes
, TYPE_FLAG_UNSIGNED
, NULL
,
3949 /* I think this is for Convex "long long". Since I don't know whether
3950 Convex sets self_subrange, I also accept that particular size regardless
3951 of self_subrange. */
3952 else if (n3
== 0 && n2
< 0
3954 || n2
== -TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3955 return init_type (TYPE_CODE_INT
, -n2
, 0, NULL
, objfile
);
3956 else if (n2
== -n3
- 1)
3959 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3961 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3962 if (n3
== 0x7fffffff)
3963 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3966 /* We have a real range type on our hands. Allocate space and
3967 return a real pointer. */
3971 index_type
= builtin_type_int
;
3973 index_type
= *dbx_lookup_type (rangenums
);
3974 if (index_type
== NULL
)
3976 /* Does this actually ever happen? Is that why we are worrying
3977 about dealing with it rather than just calling error_type? */
3979 static struct type
*range_type_index
;
3981 complaint (&symfile_complaints
,
3982 "base type %d of range type is not defined", rangenums
[1]);
3983 if (range_type_index
== NULL
)
3985 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3986 0, "range type index type", NULL
);
3987 index_type
= range_type_index
;
3990 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3991 return (result_type
);
3994 /* Read in an argument list. This is a list of types, separated by commas
3995 and terminated with END. Return the list of types read in, or (struct type
3996 **)-1 if there is an error. */
3998 static struct field
*
3999 read_args (char **pp
, int end
, struct objfile
*objfile
, int *nargsp
,
4002 /* FIXME! Remove this arbitrary limit! */
4003 struct type
*types
[1024]; /* allow for fns of 1023 parameters */
4010 /* Invalid argument list: no ','. */
4011 return (struct field
*) -1;
4013 STABS_CONTINUE (pp
, objfile
);
4014 types
[n
++] = read_type (pp
, objfile
);
4016 (*pp
)++; /* get past `end' (the ':' character) */
4018 if (TYPE_CODE (types
[n
- 1]) != TYPE_CODE_VOID
)
4026 rval
= (struct field
*) xmalloc (n
* sizeof (struct field
));
4027 memset (rval
, 0, n
* sizeof (struct field
));
4028 for (i
= 0; i
< n
; i
++)
4029 rval
[i
].type
= types
[i
];
4034 /* Common block handling. */
4036 /* List of symbols declared since the last BCOMM. This list is a tail
4037 of local_symbols. When ECOMM is seen, the symbols on the list
4038 are noted so their proper addresses can be filled in later,
4039 using the common block base address gotten from the assembler
4042 static struct pending
*common_block
;
4043 static int common_block_i
;
4045 /* Name of the current common block. We get it from the BCOMM instead of the
4046 ECOMM to match IBM documentation (even though IBM puts the name both places
4047 like everyone else). */
4048 static char *common_block_name
;
4050 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4051 to remain after this function returns. */
4054 common_block_start (char *name
, struct objfile
*objfile
)
4056 if (common_block_name
!= NULL
)
4058 complaint (&symfile_complaints
,
4059 "Invalid symbol data: common block within common block");
4061 common_block
= local_symbols
;
4062 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
4063 common_block_name
= obsavestring (name
, strlen (name
),
4064 &objfile
->symbol_obstack
);
4067 /* Process a N_ECOMM symbol. */
4070 common_block_end (struct objfile
*objfile
)
4072 /* Symbols declared since the BCOMM are to have the common block
4073 start address added in when we know it. common_block and
4074 common_block_i point to the first symbol after the BCOMM in
4075 the local_symbols list; copy the list and hang it off the
4076 symbol for the common block name for later fixup. */
4079 struct pending
*new = 0;
4080 struct pending
*next
;
4083 if (common_block_name
== NULL
)
4085 complaint (&symfile_complaints
, "ECOMM symbol unmatched by BCOMM");
4089 sym
= (struct symbol
*)
4090 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symbol
));
4091 memset (sym
, 0, sizeof (struct symbol
));
4092 /* Note: common_block_name already saved on symbol_obstack */
4093 DEPRECATED_SYMBOL_NAME (sym
) = common_block_name
;
4094 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
4096 /* Now we copy all the symbols which have been defined since the BCOMM. */
4098 /* Copy all the struct pendings before common_block. */
4099 for (next
= local_symbols
;
4100 next
!= NULL
&& next
!= common_block
;
4103 for (j
= 0; j
< next
->nsyms
; j
++)
4104 add_symbol_to_list (next
->symbol
[j
], &new);
4107 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4108 NULL, it means copy all the local symbols (which we already did
4111 if (common_block
!= NULL
)
4112 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
4113 add_symbol_to_list (common_block
->symbol
[j
], &new);
4115 SYMBOL_TYPE (sym
) = (struct type
*) new;
4117 /* Should we be putting local_symbols back to what it was?
4120 i
= hashname (DEPRECATED_SYMBOL_NAME (sym
));
4121 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
4122 global_sym_chain
[i
] = sym
;
4123 common_block_name
= NULL
;
4126 /* Add a common block's start address to the offset of each symbol
4127 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4128 the common block name). */
4131 fix_common_block (struct symbol
*sym
, int valu
)
4133 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
4134 for (; next
; next
= next
->next
)
4137 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
4138 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
4144 /* What about types defined as forward references inside of a small lexical
4146 /* Add a type to the list of undefined types to be checked through
4147 once this file has been read in. */
4150 add_undefined_type (struct type
*type
)
4152 if (undef_types_length
== undef_types_allocated
)
4154 undef_types_allocated
*= 2;
4155 undef_types
= (struct type
**)
4156 xrealloc ((char *) undef_types
,
4157 undef_types_allocated
* sizeof (struct type
*));
4159 undef_types
[undef_types_length
++] = type
;
4162 /* Go through each undefined type, see if it's still undefined, and fix it
4163 up if possible. We have two kinds of undefined types:
4165 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4166 Fix: update array length using the element bounds
4167 and the target type's length.
4168 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4169 yet defined at the time a pointer to it was made.
4170 Fix: Do a full lookup on the struct/union tag. */
4172 cleanup_undefined_types (void)
4176 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
4178 switch (TYPE_CODE (*type
))
4181 case TYPE_CODE_STRUCT
:
4182 case TYPE_CODE_UNION
:
4183 case TYPE_CODE_ENUM
:
4185 /* Check if it has been defined since. Need to do this here
4186 as well as in check_typedef to deal with the (legitimate in
4187 C though not C++) case of several types with the same name
4188 in different source files. */
4189 if (TYPE_STUB (*type
))
4191 struct pending
*ppt
;
4193 /* Name of the type, without "struct" or "union" */
4194 char *typename
= TYPE_TAG_NAME (*type
);
4196 if (typename
== NULL
)
4198 complaint (&symfile_complaints
, "need a type name");
4201 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
4203 for (i
= 0; i
< ppt
->nsyms
; i
++)
4205 struct symbol
*sym
= ppt
->symbol
[i
];
4207 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4208 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4209 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
4211 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), typename
) == 0)
4212 replace_type (*type
, SYMBOL_TYPE (sym
));
4221 complaint (&symfile_complaints
,
4222 "GDB internal error. cleanup_undefined_types with bad type %d.",
4229 undef_types_length
= 0;
4232 /* Scan through all of the global symbols defined in the object file,
4233 assigning values to the debugging symbols that need to be assigned
4234 to. Get these symbols from the minimal symbol table. */
4237 scan_file_globals (struct objfile
*objfile
)
4240 struct minimal_symbol
*msymbol
;
4241 struct symbol
*sym
, *prev
;
4242 struct objfile
*resolve_objfile
;
4244 /* SVR4 based linkers copy referenced global symbols from shared
4245 libraries to the main executable.
4246 If we are scanning the symbols for a shared library, try to resolve
4247 them from the minimal symbols of the main executable first. */
4249 if (symfile_objfile
&& objfile
!= symfile_objfile
)
4250 resolve_objfile
= symfile_objfile
;
4252 resolve_objfile
= objfile
;
4256 /* Avoid expensive loop through all minimal symbols if there are
4257 no unresolved symbols. */
4258 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4260 if (global_sym_chain
[hash
])
4263 if (hash
>= HASHSIZE
)
4266 for (msymbol
= resolve_objfile
->msymbols
;
4267 msymbol
&& DEPRECATED_SYMBOL_NAME (msymbol
) != NULL
;
4272 /* Skip static symbols. */
4273 switch (MSYMBOL_TYPE (msymbol
))
4285 /* Get the hash index and check all the symbols
4286 under that hash index. */
4288 hash
= hashname (DEPRECATED_SYMBOL_NAME (msymbol
));
4290 for (sym
= global_sym_chain
[hash
]; sym
;)
4292 if (DEPRECATED_SYMBOL_NAME (msymbol
)[0] == DEPRECATED_SYMBOL_NAME (sym
)[0] &&
4293 strcmp (DEPRECATED_SYMBOL_NAME (msymbol
) + 1, DEPRECATED_SYMBOL_NAME (sym
) + 1) == 0)
4295 /* Splice this symbol out of the hash chain and
4296 assign the value we have to it. */
4299 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
4303 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
4306 /* Check to see whether we need to fix up a common block. */
4307 /* Note: this code might be executed several times for
4308 the same symbol if there are multiple references. */
4311 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
4313 fix_common_block (sym
,
4314 SYMBOL_VALUE_ADDRESS (msymbol
));
4318 SYMBOL_VALUE_ADDRESS (sym
)
4319 = SYMBOL_VALUE_ADDRESS (msymbol
);
4321 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
4326 sym
= SYMBOL_VALUE_CHAIN (prev
);
4330 sym
= global_sym_chain
[hash
];
4336 sym
= SYMBOL_VALUE_CHAIN (sym
);
4340 if (resolve_objfile
== objfile
)
4342 resolve_objfile
= objfile
;
4345 /* Change the storage class of any remaining unresolved globals to
4346 LOC_UNRESOLVED and remove them from the chain. */
4347 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4349 sym
= global_sym_chain
[hash
];
4353 sym
= SYMBOL_VALUE_CHAIN (sym
);
4355 /* Change the symbol address from the misleading chain value
4357 SYMBOL_VALUE_ADDRESS (prev
) = 0;
4359 /* Complain about unresolved common block symbols. */
4360 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
4361 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
4363 complaint (&symfile_complaints
,
4364 "%s: common block `%s' from global_sym_chain unresolved",
4365 objfile
->name
, DEPRECATED_SYMBOL_NAME (prev
));
4368 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4371 /* Initialize anything that needs initializing when starting to read
4372 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4376 stabsread_init (void)
4380 /* Initialize anything that needs initializing when a completely new
4381 symbol file is specified (not just adding some symbols from another
4382 file, e.g. a shared library). */
4385 stabsread_new_init (void)
4387 /* Empty the hash table of global syms looking for values. */
4388 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4391 /* Initialize anything that needs initializing at the same time as
4392 start_symtab() is called. */
4397 global_stabs
= NULL
; /* AIX COFF */
4398 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4399 n_this_object_header_files
= 1;
4400 type_vector_length
= 0;
4401 type_vector
= (struct type
**) 0;
4403 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4404 common_block_name
= NULL
;
4407 /* Call after end_symtab() */
4414 xfree (type_vector
);
4417 type_vector_length
= 0;
4418 previous_stab_code
= 0;
4422 finish_global_stabs (struct objfile
*objfile
)
4426 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4427 xfree (global_stabs
);
4428 global_stabs
= NULL
;
4432 /* Find the end of the name, delimited by a ':', but don't match
4433 ObjC symbols which look like -[Foo bar::]:bla. */
4435 find_name_end (char *name
)
4438 if (s
[0] == '-' || *s
== '+')
4440 /* Must be an ObjC method symbol. */
4443 error ("invalid symbol name \"%s\"", name
);
4445 s
= strchr (s
, ']');
4448 error ("invalid symbol name \"%s\"", name
);
4450 return strchr (s
, ':');
4454 return strchr (s
, ':');
4458 /* Initializer for this module */
4461 _initialize_stabsread (void)
4463 undef_types_allocated
= 20;
4464 undef_types_length
= 0;
4465 undef_types
= (struct type
**)
4466 xmalloc (undef_types_allocated
* sizeof (struct type
*));