1 /* Support routines for decoding "stabs" debugging information format.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
5 Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* Support routines for reading and decoding debugging information in
25 the "stabs" format. This format is used with many systems that use
26 the a.out object file format, as well as some systems that use
27 COFF or ELF where the stabs data is placed in a special section.
28 Avoid placing any object file format specific code in this file. */
31 #include "gdb_string.h"
33 #include "gdb_obstack.h"
36 #include "expression.h"
39 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
41 #include "aout/aout64.h"
42 #include "gdb-stabs.h"
44 #include "complaints.h"
49 #include "cp-support.h"
53 /* Ask stabsread.h to define the vars it normally declares `extern'. */
56 #include "stabsread.h" /* Our own declarations */
59 extern void _initialize_stabsread (void);
61 /* The routines that read and process a complete stabs for a C struct or
62 C++ class pass lists of data member fields and lists of member function
63 fields in an instance of a field_info structure, as defined below.
64 This is part of some reorganization of low level C++ support and is
65 expected to eventually go away... (FIXME) */
71 struct nextfield
*next
;
73 /* This is the raw visibility from the stab. It is not checked
74 for being one of the visibilities we recognize, so code which
75 examines this field better be able to deal. */
81 struct next_fnfieldlist
83 struct next_fnfieldlist
*next
;
84 struct fn_fieldlist fn_fieldlist
;
90 read_one_struct_field (struct field_info
*, char **, char *,
91 struct type
*, struct objfile
*);
93 static struct type
*dbx_alloc_type (int[2], struct objfile
*);
95 static long read_huge_number (char **, int, int *);
97 static struct type
*error_type (char **, struct objfile
*);
100 patch_block_stabs (struct pending
*, struct pending_stabs
*,
103 static void fix_common_block (struct symbol
*, int);
105 static int read_type_number (char **, int *);
107 static struct type
*read_type (char **, struct objfile
*);
109 static struct type
*read_range_type (char **, int[2], struct objfile
*);
111 static struct type
*read_sun_builtin_type (char **, int[2], struct objfile
*);
113 static struct type
*read_sun_floating_type (char **, int[2],
116 static struct type
*read_enum_type (char **, struct type
*, struct objfile
*);
118 static struct type
*rs6000_builtin_type (int);
121 read_member_functions (struct field_info
*, char **, struct type
*,
125 read_struct_fields (struct field_info
*, char **, struct type
*,
129 read_baseclasses (struct field_info
*, char **, struct type
*,
133 read_tilde_fields (struct field_info
*, char **, struct type
*,
136 static int attach_fn_fields_to_type (struct field_info
*, struct type
*);
138 static int attach_fields_to_type (struct field_info
*, struct type
*,
141 static struct type
*read_struct_type (char **, struct type
*,
145 static struct type
*read_array_type (char **, struct type
*,
148 static struct field
*read_args (char **, int, struct objfile
*, int *, int *);
150 static void add_undefined_type (struct type
*);
153 read_cpp_abbrev (struct field_info
*, char **, struct type
*,
156 static char *find_name_end (char *name
);
158 static int process_reference (char **string
);
160 void stabsread_clear_cache (void);
162 static const char vptr_name
[] = "_vptr$";
163 static const char vb_name
[] = "_vb$";
165 /* Define this as 1 if a pcc declaration of a char or short argument
166 gives the correct address. Otherwise assume pcc gives the
167 address of the corresponding int, which is not the same on a
168 big-endian machine. */
170 #if !defined (BELIEVE_PCC_PROMOTION)
171 #define BELIEVE_PCC_PROMOTION 0
175 invalid_cpp_abbrev_complaint (const char *arg1
)
177 complaint (&symfile_complaints
, "invalid C++ abbreviation `%s'", arg1
);
181 reg_value_complaint (int regnum
, int num_regs
, const char *sym
)
183 complaint (&symfile_complaints
,
184 "register number %d too large (max %d) in symbol %s",
185 regnum
, num_regs
- 1, sym
);
189 stabs_general_complaint (const char *arg1
)
191 complaint (&symfile_complaints
, "%s", arg1
);
194 /* Make a list of forward references which haven't been defined. */
196 static struct type
**undef_types
;
197 static int undef_types_allocated
;
198 static int undef_types_length
;
199 static struct symbol
*current_symbol
= NULL
;
201 /* Check for and handle cretinous stabs symbol name continuation! */
202 #define STABS_CONTINUE(pp,objfile) \
204 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
205 *(pp) = next_symbol_text (objfile); \
209 /* Look up a dbx type-number pair. Return the address of the slot
210 where the type for that number-pair is stored.
211 The number-pair is in TYPENUMS.
213 This can be used for finding the type associated with that pair
214 or for associating a new type with the pair. */
216 static struct type
**
217 dbx_lookup_type (int typenums
[2])
219 int filenum
= typenums
[0];
220 int index
= typenums
[1];
223 struct header_file
*f
;
226 if (filenum
== -1) /* -1,-1 is for temporary types. */
229 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
231 complaint (&symfile_complaints
,
232 "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
233 filenum
, index
, symnum
);
241 /* Caller wants address of address of type. We think
242 that negative (rs6k builtin) types will never appear as
243 "lvalues", (nor should they), so we stuff the real type
244 pointer into a temp, and return its address. If referenced,
245 this will do the right thing. */
246 static struct type
*temp_type
;
248 temp_type
= rs6000_builtin_type (index
);
252 /* Type is defined outside of header files.
253 Find it in this object file's type vector. */
254 if (index
>= type_vector_length
)
256 old_len
= type_vector_length
;
259 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
260 type_vector
= (struct type
**)
261 xmalloc (type_vector_length
* sizeof (struct type
*));
263 while (index
>= type_vector_length
)
265 type_vector_length
*= 2;
267 type_vector
= (struct type
**)
268 xrealloc ((char *) type_vector
,
269 (type_vector_length
* sizeof (struct type
*)));
270 memset (&type_vector
[old_len
], 0,
271 (type_vector_length
- old_len
) * sizeof (struct type
*));
273 return (&type_vector
[index
]);
277 real_filenum
= this_object_header_files
[filenum
];
279 if (real_filenum
>= N_HEADER_FILES (current_objfile
))
281 struct type
*temp_type
;
282 struct type
**temp_type_p
;
284 warning ("GDB internal error: bad real_filenum");
287 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
288 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
289 *temp_type_p
= temp_type
;
293 f
= HEADER_FILES (current_objfile
) + real_filenum
;
295 f_orig_length
= f
->length
;
296 if (index
>= f_orig_length
)
298 while (index
>= f
->length
)
302 f
->vector
= (struct type
**)
303 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
304 memset (&f
->vector
[f_orig_length
], 0,
305 (f
->length
- f_orig_length
) * sizeof (struct type
*));
307 return (&f
->vector
[index
]);
311 /* Make sure there is a type allocated for type numbers TYPENUMS
312 and return the type object.
313 This can create an empty (zeroed) type object.
314 TYPENUMS may be (-1, -1) to return a new type object that is not
315 put into the type vector, and so may not be referred to by number. */
318 dbx_alloc_type (int typenums
[2], struct objfile
*objfile
)
320 struct type
**type_addr
;
322 if (typenums
[0] == -1)
324 return (alloc_type (objfile
));
327 type_addr
= dbx_lookup_type (typenums
);
329 /* If we are referring to a type not known at all yet,
330 allocate an empty type for it.
331 We will fill it in later if we find out how. */
334 *type_addr
= alloc_type (objfile
);
340 /* for all the stabs in a given stab vector, build appropriate types
341 and fix their symbols in given symbol vector. */
344 patch_block_stabs (struct pending
*symbols
, struct pending_stabs
*stabs
,
345 struct objfile
*objfile
)
355 /* for all the stab entries, find their corresponding symbols and
356 patch their types! */
358 for (ii
= 0; ii
< stabs
->count
; ++ii
)
360 name
= stabs
->stab
[ii
];
361 pp
= (char *) strchr (name
, ':');
365 pp
= (char *) strchr (pp
, ':');
367 sym
= find_symbol_in_list (symbols
, name
, pp
- name
);
370 /* FIXME-maybe: it would be nice if we noticed whether
371 the variable was defined *anywhere*, not just whether
372 it is defined in this compilation unit. But neither
373 xlc or GCC seem to need such a definition, and until
374 we do psymtabs (so that the minimal symbols from all
375 compilation units are available now), I'm not sure
376 how to get the information. */
378 /* On xcoff, if a global is defined and never referenced,
379 ld will remove it from the executable. There is then
380 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
381 sym
= (struct symbol
*)
382 obstack_alloc (&objfile
->objfile_obstack
,
383 sizeof (struct symbol
));
385 memset (sym
, 0, sizeof (struct symbol
));
386 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
387 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
388 DEPRECATED_SYMBOL_NAME (sym
) =
389 obsavestring (name
, pp
- name
, &objfile
->objfile_obstack
);
391 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
393 /* I don't think the linker does this with functions,
394 so as far as I know this is never executed.
395 But it doesn't hurt to check. */
397 lookup_function_type (read_type (&pp
, objfile
));
401 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
403 add_symbol_to_list (sym
, &global_symbols
);
408 if (*(pp
- 1) == 'F' || *(pp
- 1) == 'f')
411 lookup_function_type (read_type (&pp
, objfile
));
415 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
423 /* Read a number by which a type is referred to in dbx data,
424 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
425 Just a single number N is equivalent to (0,N).
426 Return the two numbers by storing them in the vector TYPENUMS.
427 TYPENUMS will then be used as an argument to dbx_lookup_type.
429 Returns 0 for success, -1 for error. */
432 read_type_number (char **pp
, int *typenums
)
438 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
441 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
448 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
456 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
457 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
458 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
459 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
461 /* Structure for storing pointers to reference definitions for fast lookup
462 during "process_later". */
471 #define MAX_CHUNK_REFS 100
472 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
473 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
475 static struct ref_map
*ref_map
;
477 /* Ptr to free cell in chunk's linked list. */
478 static int ref_count
= 0;
480 /* Number of chunks malloced. */
481 static int ref_chunk
= 0;
483 /* This file maintains a cache of stabs aliases found in the symbol
484 table. If the symbol table changes, this cache must be cleared
485 or we are left holding onto data in invalid obstacks. */
487 stabsread_clear_cache (void)
493 /* Create array of pointers mapping refids to symbols and stab strings.
494 Add pointers to reference definition symbols and/or their values as we
495 find them, using their reference numbers as our index.
496 These will be used later when we resolve references. */
498 ref_add (int refnum
, struct symbol
*sym
, char *stabs
, CORE_ADDR value
)
502 if (refnum
>= ref_count
)
503 ref_count
= refnum
+ 1;
504 if (ref_count
> ref_chunk
* MAX_CHUNK_REFS
)
506 int new_slots
= ref_count
- ref_chunk
* MAX_CHUNK_REFS
;
507 int new_chunks
= new_slots
/ MAX_CHUNK_REFS
+ 1;
508 ref_map
= (struct ref_map
*)
509 xrealloc (ref_map
, REF_MAP_SIZE (ref_chunk
+ new_chunks
));
510 memset (ref_map
+ ref_chunk
* MAX_CHUNK_REFS
, 0, new_chunks
* REF_CHUNK_SIZE
);
511 ref_chunk
+= new_chunks
;
513 ref_map
[refnum
].stabs
= stabs
;
514 ref_map
[refnum
].sym
= sym
;
515 ref_map
[refnum
].value
= value
;
518 /* Return defined sym for the reference REFNUM. */
520 ref_search (int refnum
)
522 if (refnum
< 0 || refnum
> ref_count
)
524 return ref_map
[refnum
].sym
;
527 /* Parse a reference id in STRING and return the resulting
528 reference number. Move STRING beyond the reference id. */
531 process_reference (char **string
)
539 /* Advance beyond the initial '#'. */
542 /* Read number as reference id. */
543 while (*p
&& isdigit (*p
))
545 refnum
= refnum
* 10 + *p
- '0';
552 /* If STRING defines a reference, store away a pointer to the reference
553 definition for later use. Return the reference number. */
556 symbol_reference_defined (char **string
)
561 refnum
= process_reference (&p
);
563 /* Defining symbols end in '=' */
566 /* Symbol is being defined here. */
572 /* Must be a reference. Either the symbol has already been defined,
573 or this is a forward reference to it. */
580 define_symbol (CORE_ADDR valu
, char *string
, int desc
, int type
,
581 struct objfile
*objfile
)
584 char *p
= (char *) find_name_end (string
);
589 /* We would like to eliminate nameless symbols, but keep their types.
590 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
591 to type 2, but, should not create a symbol to address that type. Since
592 the symbol will be nameless, there is no way any user can refer to it. */
596 /* Ignore syms with empty names. */
600 /* Ignore old-style symbols from cc -go */
610 /* If a nameless stab entry, all we need is the type, not the symbol.
611 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
612 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
614 current_symbol
= sym
= (struct symbol
*)
615 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
616 memset (sym
, 0, sizeof (struct symbol
));
618 switch (type
& N_TYPE
)
621 SYMBOL_SECTION (sym
) = SECT_OFF_TEXT (objfile
);
624 SYMBOL_SECTION (sym
) = SECT_OFF_DATA (objfile
);
627 SYMBOL_SECTION (sym
) = SECT_OFF_BSS (objfile
);
631 if (processing_gcc_compilation
)
633 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
634 number of bytes occupied by a type or object, which we ignore. */
635 SYMBOL_LINE (sym
) = desc
;
639 SYMBOL_LINE (sym
) = 0; /* unknown */
642 if (is_cplus_marker (string
[0]))
644 /* Special GNU C++ names. */
648 DEPRECATED_SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
649 &objfile
->objfile_obstack
);
652 case 'v': /* $vtbl_ptr_type */
653 /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */
657 DEPRECATED_SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
658 &objfile
->objfile_obstack
);
662 /* This was an anonymous type that was never fixed up. */
665 #ifdef STATIC_TRANSFORM_NAME
667 /* SunPRO (3.0 at least) static variable encoding. */
672 complaint (&symfile_complaints
, "Unknown C++ symbol name `%s'",
674 goto normal
; /* Do *something* with it */
680 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
681 SYMBOL_SET_NAMES (sym
, string
, p
- string
, objfile
);
685 /* Determine the type of name being defined. */
687 /* Getting GDB to correctly skip the symbol on an undefined symbol
688 descriptor and not ever dump core is a very dodgy proposition if
689 we do things this way. I say the acorn RISC machine can just
690 fix their compiler. */
691 /* The Acorn RISC machine's compiler can put out locals that don't
692 start with "234=" or "(3,4)=", so assume anything other than the
693 deftypes we know how to handle is a local. */
694 if (!strchr ("cfFGpPrStTvVXCR", *p
))
696 if (isdigit (*p
) || *p
== '(' || *p
== '-')
705 /* c is a special case, not followed by a type-number.
706 SYMBOL:c=iVALUE for an integer constant symbol.
707 SYMBOL:c=rVALUE for a floating constant symbol.
708 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
709 e.g. "b:c=e6,0" for "const b = blob1"
710 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
713 SYMBOL_CLASS (sym
) = LOC_CONST
;
714 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
715 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
716 add_symbol_to_list (sym
, &file_symbols
);
727 /* FIXME-if-picky-about-floating-accuracy: Should be using
728 target arithmetic to get the value. real.c in GCC
729 probably has the necessary code. */
731 /* FIXME: lookup_fundamental_type is a hack. We should be
732 creating a type especially for the type of float constants.
733 Problem is, what type should it be?
735 Also, what should the name of this type be? Should we
736 be using 'S' constants (see stabs.texinfo) instead? */
738 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
741 obstack_alloc (&objfile
->objfile_obstack
,
742 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
743 store_typed_floating (dbl_valu
, SYMBOL_TYPE (sym
), d
);
744 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
745 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
750 /* Defining integer constants this way is kind of silly,
751 since 'e' constants allows the compiler to give not
752 only the value, but the type as well. C has at least
753 int, long, unsigned int, and long long as constant
754 types; other languages probably should have at least
755 unsigned as well as signed constants. */
757 /* We just need one int constant type for all objfiles.
758 It doesn't depend on languages or anything (arguably its
759 name should be a language-specific name for a type of
760 that size, but I'm inclined to say that if the compiler
761 wants a nice name for the type, it can use 'e'). */
762 static struct type
*int_const_type
;
764 /* Yes, this is as long as a *host* int. That is because we
766 if (int_const_type
== NULL
)
768 init_type (TYPE_CODE_INT
,
769 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
771 (struct objfile
*) NULL
);
772 SYMBOL_TYPE (sym
) = int_const_type
;
773 SYMBOL_VALUE (sym
) = atoi (p
);
774 SYMBOL_CLASS (sym
) = LOC_CONST
;
778 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
779 can be represented as integral.
780 e.g. "b:c=e6,0" for "const b = blob1"
781 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
783 SYMBOL_CLASS (sym
) = LOC_CONST
;
784 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
788 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
793 /* If the value is too big to fit in an int (perhaps because
794 it is unsigned), or something like that, we silently get
795 a bogus value. The type and everything else about it is
796 correct. Ideally, we should be using whatever we have
797 available for parsing unsigned and long long values,
799 SYMBOL_VALUE (sym
) = atoi (p
);
804 SYMBOL_CLASS (sym
) = LOC_CONST
;
805 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
808 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
809 add_symbol_to_list (sym
, &file_symbols
);
813 /* The name of a caught exception. */
814 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
815 SYMBOL_CLASS (sym
) = LOC_LABEL
;
816 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
817 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
818 add_symbol_to_list (sym
, &local_symbols
);
822 /* A static function definition. */
823 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
824 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
825 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
826 add_symbol_to_list (sym
, &file_symbols
);
827 /* fall into process_function_types. */
829 process_function_types
:
830 /* Function result types are described as the result type in stabs.
831 We need to convert this to the function-returning-type-X type
832 in GDB. E.g. "int" is converted to "function returning int". */
833 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
834 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
836 /* All functions in C++ have prototypes. Stabs does not offer an
837 explicit way to identify prototyped or unprototyped functions,
838 but both GCC and Sun CC emit stabs for the "call-as" type rather
839 than the "declared-as" type for unprototyped functions, so
840 we treat all functions as if they were prototyped. This is used
841 primarily for promotion when calling the function from GDB. */
842 TYPE_FLAGS (SYMBOL_TYPE (sym
)) |= TYPE_FLAG_PROTOTYPED
;
844 /* fall into process_prototype_types */
846 process_prototype_types
:
847 /* Sun acc puts declared types of arguments here. */
850 struct type
*ftype
= SYMBOL_TYPE (sym
);
855 /* Obtain a worst case guess for the number of arguments
856 by counting the semicolons. */
863 /* Allocate parameter information fields and fill them in. */
864 TYPE_FIELDS (ftype
) = (struct field
*)
865 TYPE_ALLOC (ftype
, nsemi
* sizeof (struct field
));
870 /* A type number of zero indicates the start of varargs.
871 FIXME: GDB currently ignores vararg functions. */
872 if (p
[0] == '0' && p
[1] == '\0')
874 ptype
= read_type (&p
, objfile
);
876 /* The Sun compilers mark integer arguments, which should
877 be promoted to the width of the calling conventions, with
878 a type which references itself. This type is turned into
879 a TYPE_CODE_VOID type by read_type, and we have to turn
880 it back into builtin_type_int here.
881 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
882 if (TYPE_CODE (ptype
) == TYPE_CODE_VOID
)
883 ptype
= builtin_type_int
;
884 TYPE_FIELD_TYPE (ftype
, nparams
) = ptype
;
885 TYPE_FIELD_ARTIFICIAL (ftype
, nparams
++) = 0;
887 TYPE_NFIELDS (ftype
) = nparams
;
888 TYPE_FLAGS (ftype
) |= TYPE_FLAG_PROTOTYPED
;
893 /* A global function definition. */
894 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
895 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
896 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
897 add_symbol_to_list (sym
, &global_symbols
);
898 goto process_function_types
;
901 /* For a class G (global) symbol, it appears that the
902 value is not correct. It is necessary to search for the
903 corresponding linker definition to find the value.
904 These definitions appear at the end of the namelist. */
905 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
906 SYMBOL_CLASS (sym
) = LOC_STATIC
;
907 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
908 /* Don't add symbol references to global_sym_chain.
909 Symbol references don't have valid names and wont't match up with
910 minimal symbols when the global_sym_chain is relocated.
911 We'll fixup symbol references when we fixup the defining symbol. */
912 if (DEPRECATED_SYMBOL_NAME (sym
) && DEPRECATED_SYMBOL_NAME (sym
)[0] != '#')
914 i
= hashname (DEPRECATED_SYMBOL_NAME (sym
));
915 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
916 global_sym_chain
[i
] = sym
;
918 add_symbol_to_list (sym
, &global_symbols
);
921 /* This case is faked by a conditional above,
922 when there is no code letter in the dbx data.
923 Dbx data never actually contains 'l'. */
926 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
927 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
928 SYMBOL_VALUE (sym
) = valu
;
929 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
930 add_symbol_to_list (sym
, &local_symbols
);
935 /* pF is a two-letter code that means a function parameter in Fortran.
936 The type-number specifies the type of the return value.
937 Translate it into a pointer-to-function type. */
941 = lookup_pointer_type
942 (lookup_function_type (read_type (&p
, objfile
)));
945 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
947 SYMBOL_CLASS (sym
) = LOC_ARG
;
948 SYMBOL_VALUE (sym
) = valu
;
949 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
950 add_symbol_to_list (sym
, &local_symbols
);
952 if (TARGET_BYTE_ORDER
!= BFD_ENDIAN_BIG
)
954 /* On little-endian machines, this crud is never necessary,
955 and, if the extra bytes contain garbage, is harmful. */
959 /* If it's gcc-compiled, if it says `short', believe it. */
960 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
963 if (!BELIEVE_PCC_PROMOTION
)
965 /* This is the signed type which arguments get promoted to. */
966 static struct type
*pcc_promotion_type
;
967 /* This is the unsigned type which arguments get promoted to. */
968 static struct type
*pcc_unsigned_promotion_type
;
970 /* Call it "int" because this is mainly C lossage. */
971 if (pcc_promotion_type
== NULL
)
973 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
976 if (pcc_unsigned_promotion_type
== NULL
)
977 pcc_unsigned_promotion_type
=
978 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
979 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
981 if (BELIEVE_PCC_PROMOTION_TYPE
)
983 /* This is defined on machines (e.g. sparc) where we
984 should believe the type of a PCC 'short' argument,
985 but shouldn't believe the address (the address is the
986 address of the corresponding int).
988 My guess is that this correction, as opposed to
989 changing the parameter to an 'int' (as done below,
990 for PCC on most machines), is the right thing to do
991 on all machines, but I don't want to risk breaking
992 something that already works. On most PCC machines,
993 the sparc problem doesn't come up because the calling
994 function has to zero the top bytes (not knowing
995 whether the called function wants an int or a short),
996 so there is little practical difference between an
997 int and a short (except perhaps what happens when the
998 GDB user types "print short_arg = 0x10000;").
1000 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1001 compiler actually produces the correct address (we
1002 don't need to fix it up). I made this code adapt so
1003 that it will offset the symbol if it was pointing at
1004 an int-aligned location and not otherwise. This way
1005 you can use the same gdb for 4.0.x and 4.1 systems.
1007 If the parameter is shorter than an int, and is
1008 integral (e.g. char, short, or unsigned equivalent),
1009 and is claimed to be passed on an integer boundary,
1010 don't believe it! Offset the parameter's address to
1011 the tail-end of that integer. */
1013 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1014 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
1015 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
1017 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
1018 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
1024 /* If PCC says a parameter is a short or a char,
1025 it is really an int. */
1026 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
1027 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
1030 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
1031 ? pcc_unsigned_promotion_type
1032 : pcc_promotion_type
;
1039 /* acc seems to use P to declare the prototypes of functions that
1040 are referenced by this file. gdb is not prepared to deal
1041 with this extra information. FIXME, it ought to. */
1044 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1045 goto process_prototype_types
;
1050 /* Parameter which is in a register. */
1051 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1052 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
1053 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1054 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1056 reg_value_complaint (SYMBOL_VALUE (sym
),
1057 NUM_REGS
+ NUM_PSEUDO_REGS
,
1058 SYMBOL_PRINT_NAME (sym
));
1059 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1061 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1062 add_symbol_to_list (sym
, &local_symbols
);
1066 /* Register variable (either global or local). */
1067 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1068 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
1069 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1070 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1072 reg_value_complaint (SYMBOL_VALUE (sym
),
1073 NUM_REGS
+ NUM_PSEUDO_REGS
,
1074 SYMBOL_PRINT_NAME (sym
));
1075 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1077 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1078 if (within_function
)
1080 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1081 the same name to represent an argument passed in a
1082 register. GCC uses 'P' for the same case. So if we find
1083 such a symbol pair we combine it into one 'P' symbol.
1084 For Sun cc we need to do this regardless of
1085 stabs_argument_has_addr, because the compiler puts out
1086 the 'p' symbol even if it never saves the argument onto
1089 On most machines, we want to preserve both symbols, so
1090 that we can still get information about what is going on
1091 with the stack (VAX for computing args_printed, using
1092 stack slots instead of saved registers in backtraces,
1095 Note that this code illegally combines
1096 main(argc) struct foo argc; { register struct foo argc; }
1097 but this case is considered pathological and causes a warning
1098 from a decent compiler. */
1101 && local_symbols
->nsyms
> 0
1102 && gdbarch_stabs_argument_has_addr (current_gdbarch
,
1105 struct symbol
*prev_sym
;
1106 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1107 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1108 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1109 && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym
),
1110 DEPRECATED_SYMBOL_NAME (sym
)) == 0)
1112 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1113 /* Use the type from the LOC_REGISTER; that is the type
1114 that is actually in that register. */
1115 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1116 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1121 add_symbol_to_list (sym
, &local_symbols
);
1124 add_symbol_to_list (sym
, &file_symbols
);
1128 /* Static symbol at top level of file */
1129 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1130 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1131 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1132 #ifdef STATIC_TRANSFORM_NAME
1133 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
)))
1135 struct minimal_symbol
*msym
;
1136 msym
= lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym
), NULL
, objfile
);
1139 DEPRECATED_SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
));
1140 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1144 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1145 add_symbol_to_list (sym
, &file_symbols
);
1150 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1152 /* For a nameless type, we don't want a create a symbol, thus we
1153 did not use `sym'. Return without further processing. */
1157 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1158 SYMBOL_VALUE (sym
) = valu
;
1159 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1160 /* C++ vagaries: we may have a type which is derived from
1161 a base type which did not have its name defined when the
1162 derived class was output. We fill in the derived class's
1163 base part member's name here in that case. */
1164 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1165 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1166 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1167 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1170 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1171 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1172 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1173 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1176 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1178 /* gcc-2.6 or later (when using -fvtable-thunks)
1179 emits a unique named type for a vtable entry.
1180 Some gdb code depends on that specific name. */
1181 extern const char vtbl_ptr_name
[];
1183 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1184 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), vtbl_ptr_name
))
1185 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1187 /* If we are giving a name to a type such as "pointer to
1188 foo" or "function returning foo", we better not set
1189 the TYPE_NAME. If the program contains "typedef char
1190 *caddr_t;", we don't want all variables of type char
1191 * to print as caddr_t. This is not just a
1192 consequence of GDB's type management; PCC and GCC (at
1193 least through version 2.4) both output variables of
1194 either type char * or caddr_t with the type number
1195 defined in the 't' symbol for caddr_t. If a future
1196 compiler cleans this up it GDB is not ready for it
1197 yet, but if it becomes ready we somehow need to
1198 disable this check (without breaking the PCC/GCC2.4
1203 Fortunately, this check seems not to be necessary
1204 for anything except pointers or functions. */
1205 /* ezannoni: 2000-10-26. This seems to apply for
1206 versions of gcc older than 2.8. This was the original
1207 problem: with the following code gdb would tell that
1208 the type for name1 is caddr_t, and func is char()
1209 typedef char *caddr_t;
1221 /* Pascal accepts names for pointer types. */
1222 if (current_subfile
->language
== language_pascal
)
1224 TYPE_NAME (SYMBOL_TYPE (sym
)) = DEPRECATED_SYMBOL_NAME (sym
);
1228 TYPE_NAME (SYMBOL_TYPE (sym
)) = DEPRECATED_SYMBOL_NAME (sym
);
1231 add_symbol_to_list (sym
, &file_symbols
);
1235 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1236 by 't' which means we are typedef'ing it as well. */
1237 synonym
= *p
== 't';
1242 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1244 /* For a nameless type, we don't want a create a symbol, thus we
1245 did not use `sym'. Return without further processing. */
1249 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1250 SYMBOL_VALUE (sym
) = valu
;
1251 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
1252 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1253 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1254 = obconcat (&objfile
->objfile_obstack
, "", "", DEPRECATED_SYMBOL_NAME (sym
));
1255 add_symbol_to_list (sym
, &file_symbols
);
1259 /* Clone the sym and then modify it. */
1260 struct symbol
*typedef_sym
= (struct symbol
*)
1261 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
1262 *typedef_sym
= *sym
;
1263 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1264 SYMBOL_VALUE (typedef_sym
) = valu
;
1265 SYMBOL_DOMAIN (typedef_sym
) = VAR_DOMAIN
;
1266 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1267 TYPE_NAME (SYMBOL_TYPE (sym
))
1268 = obconcat (&objfile
->objfile_obstack
, "", "", DEPRECATED_SYMBOL_NAME (sym
));
1269 add_symbol_to_list (typedef_sym
, &file_symbols
);
1274 /* Static symbol of local scope */
1275 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1276 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1277 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1278 #ifdef STATIC_TRANSFORM_NAME
1279 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
)))
1281 struct minimal_symbol
*msym
;
1282 msym
= lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym
), NULL
, objfile
);
1285 DEPRECATED_SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym
));
1286 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1290 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1291 add_symbol_to_list (sym
, &local_symbols
);
1295 /* Reference parameter */
1296 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1297 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1298 SYMBOL_VALUE (sym
) = valu
;
1299 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1300 add_symbol_to_list (sym
, &local_symbols
);
1304 /* Reference parameter which is in a register. */
1305 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1306 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1307 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1308 if (SYMBOL_VALUE (sym
) >= NUM_REGS
+ NUM_PSEUDO_REGS
)
1310 reg_value_complaint (SYMBOL_VALUE (sym
),
1311 NUM_REGS
+ NUM_PSEUDO_REGS
,
1312 SYMBOL_PRINT_NAME (sym
));
1313 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1315 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1316 add_symbol_to_list (sym
, &local_symbols
);
1320 /* This is used by Sun FORTRAN for "function result value".
1321 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1322 that Pascal uses it too, but when I tried it Pascal used
1323 "x:3" (local symbol) instead. */
1324 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1325 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1326 SYMBOL_VALUE (sym
) = valu
;
1327 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1328 add_symbol_to_list (sym
, &local_symbols
);
1332 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1333 SYMBOL_CLASS (sym
) = LOC_CONST
;
1334 SYMBOL_VALUE (sym
) = 0;
1335 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
1336 add_symbol_to_list (sym
, &file_symbols
);
1340 /* Some systems pass variables of certain types by reference instead
1341 of by value, i.e. they will pass the address of a structure (in a
1342 register or on the stack) instead of the structure itself. */
1344 if (gdbarch_stabs_argument_has_addr (current_gdbarch
, SYMBOL_TYPE (sym
))
1345 && (SYMBOL_CLASS (sym
) == LOC_REGPARM
|| SYMBOL_CLASS (sym
) == LOC_ARG
))
1347 /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for
1348 variables passed in a register). */
1349 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
)
1350 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1351 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1352 and subsequent arguments on SPARC, for example). */
1353 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
1354 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1360 /* Skip rest of this symbol and return an error type.
1362 General notes on error recovery: error_type always skips to the
1363 end of the symbol (modulo cretinous dbx symbol name continuation).
1364 Thus code like this:
1366 if (*(*pp)++ != ';')
1367 return error_type (pp, objfile);
1369 is wrong because if *pp starts out pointing at '\0' (typically as the
1370 result of an earlier error), it will be incremented to point to the
1371 start of the next symbol, which might produce strange results, at least
1372 if you run off the end of the string table. Instead use
1375 return error_type (pp, objfile);
1381 foo = error_type (pp, objfile);
1385 And in case it isn't obvious, the point of all this hair is so the compiler
1386 can define new types and new syntaxes, and old versions of the
1387 debugger will be able to read the new symbol tables. */
1389 static struct type
*
1390 error_type (char **pp
, struct objfile
*objfile
)
1392 complaint (&symfile_complaints
, "couldn't parse type; debugger out of date?");
1395 /* Skip to end of symbol. */
1396 while (**pp
!= '\0')
1401 /* Check for and handle cretinous dbx symbol name continuation! */
1402 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1404 *pp
= next_symbol_text (objfile
);
1411 return (builtin_type_error
);
1415 /* Read type information or a type definition; return the type. Even
1416 though this routine accepts either type information or a type
1417 definition, the distinction is relevant--some parts of stabsread.c
1418 assume that type information starts with a digit, '-', or '(' in
1419 deciding whether to call read_type. */
1421 static struct type
*
1422 read_type (char **pp
, struct objfile
*objfile
)
1424 struct type
*type
= 0;
1427 char type_descriptor
;
1429 /* Size in bits of type if specified by a type attribute, or -1 if
1430 there is no size attribute. */
1433 /* Used to distinguish string and bitstring from char-array and set. */
1436 /* Used to distinguish vector from array. */
1439 /* Read type number if present. The type number may be omitted.
1440 for instance in a two-dimensional array declared with type
1441 "ar1;1;10;ar1;1;10;4". */
1442 if ((**pp
>= '0' && **pp
<= '9')
1446 if (read_type_number (pp
, typenums
) != 0)
1447 return error_type (pp
, objfile
);
1451 /* Type is not being defined here. Either it already
1452 exists, or this is a forward reference to it.
1453 dbx_alloc_type handles both cases. */
1454 type
= dbx_alloc_type (typenums
, objfile
);
1456 /* If this is a forward reference, arrange to complain if it
1457 doesn't get patched up by the time we're done
1459 if (TYPE_CODE (type
) == TYPE_CODE_UNDEF
)
1460 add_undefined_type (type
);
1465 /* Type is being defined here. */
1467 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1472 /* 'typenums=' not present, type is anonymous. Read and return
1473 the definition, but don't put it in the type vector. */
1474 typenums
[0] = typenums
[1] = -1;
1479 type_descriptor
= (*pp
)[-1];
1480 switch (type_descriptor
)
1484 enum type_code code
;
1486 /* Used to index through file_symbols. */
1487 struct pending
*ppt
;
1490 /* Name including "struct", etc. */
1494 char *from
, *to
, *p
, *q1
, *q2
;
1496 /* Set the type code according to the following letter. */
1500 code
= TYPE_CODE_STRUCT
;
1503 code
= TYPE_CODE_UNION
;
1506 code
= TYPE_CODE_ENUM
;
1510 /* Complain and keep going, so compilers can invent new
1511 cross-reference types. */
1512 complaint (&symfile_complaints
,
1513 "Unrecognized cross-reference type `%c'", (*pp
)[0]);
1514 code
= TYPE_CODE_STRUCT
;
1519 q1
= strchr (*pp
, '<');
1520 p
= strchr (*pp
, ':');
1522 return error_type (pp
, objfile
);
1523 if (q1
&& p
> q1
&& p
[1] == ':')
1525 int nesting_level
= 0;
1526 for (q2
= q1
; *q2
; q2
++)
1530 else if (*q2
== '>')
1532 else if (*q2
== ':' && nesting_level
== 0)
1537 return error_type (pp
, objfile
);
1540 (char *) obstack_alloc (&objfile
->objfile_obstack
, p
- *pp
+ 1);
1542 /* Copy the name. */
1548 /* Set the pointer ahead of the name which we just read, and
1553 /* If this type has already been declared, then reuse the same
1554 type, rather than allocating a new one. This saves some
1557 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1558 for (i
= 0; i
< ppt
->nsyms
; i
++)
1560 struct symbol
*sym
= ppt
->symbol
[i
];
1562 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1563 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
1564 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1565 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), type_name
) == 0)
1567 obstack_free (&objfile
->objfile_obstack
, type_name
);
1568 type
= SYMBOL_TYPE (sym
);
1569 if (typenums
[0] != -1)
1570 *dbx_lookup_type (typenums
) = type
;
1575 /* Didn't find the type to which this refers, so we must
1576 be dealing with a forward reference. Allocate a type
1577 structure for it, and keep track of it so we can
1578 fill in the rest of the fields when we get the full
1580 type
= dbx_alloc_type (typenums
, objfile
);
1581 TYPE_CODE (type
) = code
;
1582 TYPE_TAG_NAME (type
) = type_name
;
1583 INIT_CPLUS_SPECIFIC (type
);
1584 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1586 add_undefined_type (type
);
1590 case '-': /* RS/6000 built-in type */
1604 /* We deal with something like t(1,2)=(3,4)=... which
1605 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1607 /* Allocate and enter the typedef type first.
1608 This handles recursive types. */
1609 type
= dbx_alloc_type (typenums
, objfile
);
1610 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1612 struct type
*xtype
= read_type (pp
, objfile
);
1615 /* It's being defined as itself. That means it is "void". */
1616 TYPE_CODE (type
) = TYPE_CODE_VOID
;
1617 TYPE_LENGTH (type
) = 1;
1619 else if (type_size
>= 0 || is_string
)
1621 /* This is the absolute wrong way to construct types. Every
1622 other debug format has found a way around this problem and
1623 the related problems with unnecessarily stubbed types;
1624 someone motivated should attempt to clean up the issue
1625 here as well. Once a type pointed to has been created it
1626 should not be modified.
1628 Well, it's not *absolutely* wrong. Constructing recursive
1629 types (trees, linked lists) necessarily entails modifying
1630 types after creating them. Constructing any loop structure
1631 entails side effects. The Dwarf 2 reader does handle this
1632 more gracefully (it never constructs more than once
1633 instance of a type object, so it doesn't have to copy type
1634 objects wholesale), but it still mutates type objects after
1635 other folks have references to them.
1637 Keep in mind that this circularity/mutation issue shows up
1638 at the source language level, too: C's "incomplete types",
1639 for example. So the proper cleanup, I think, would be to
1640 limit GDB's type smashing to match exactly those required
1641 by the source language. So GDB could have a
1642 "complete_this_type" function, but never create unnecessary
1643 copies of a type otherwise. */
1644 replace_type (type
, xtype
);
1645 TYPE_NAME (type
) = NULL
;
1646 TYPE_TAG_NAME (type
) = NULL
;
1650 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1651 TYPE_TARGET_TYPE (type
) = xtype
;
1656 /* In the following types, we must be sure to overwrite any existing
1657 type that the typenums refer to, rather than allocating a new one
1658 and making the typenums point to the new one. This is because there
1659 may already be pointers to the existing type (if it had been
1660 forward-referenced), and we must change it to a pointer, function,
1661 reference, or whatever, *in-place*. */
1663 case '*': /* Pointer to another type */
1664 type1
= read_type (pp
, objfile
);
1665 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1668 case '&': /* Reference to another type */
1669 type1
= read_type (pp
, objfile
);
1670 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1673 case 'f': /* Function returning another type */
1674 type1
= read_type (pp
, objfile
);
1675 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1678 case 'g': /* Prototyped function. (Sun) */
1680 /* Unresolved questions:
1682 - According to Sun's ``STABS Interface Manual'', for 'f'
1683 and 'F' symbol descriptors, a `0' in the argument type list
1684 indicates a varargs function. But it doesn't say how 'g'
1685 type descriptors represent that info. Someone with access
1686 to Sun's toolchain should try it out.
1688 - According to the comment in define_symbol (search for
1689 `process_prototype_types:'), Sun emits integer arguments as
1690 types which ref themselves --- like `void' types. Do we
1691 have to deal with that here, too? Again, someone with
1692 access to Sun's toolchain should try it out and let us
1695 const char *type_start
= (*pp
) - 1;
1696 struct type
*return_type
= read_type (pp
, objfile
);
1697 struct type
*func_type
1698 = make_function_type (return_type
, dbx_lookup_type (typenums
));
1701 struct type_list
*next
;
1705 while (**pp
&& **pp
!= '#')
1707 struct type
*arg_type
= read_type (pp
, objfile
);
1708 struct type_list
*new = alloca (sizeof (*new));
1709 new->type
= arg_type
;
1710 new->next
= arg_types
;
1718 complaint (&symfile_complaints
,
1719 "Prototyped function type didn't end arguments with `#':\n%s",
1723 /* If there is just one argument whose type is `void', then
1724 that's just an empty argument list. */
1726 && ! arg_types
->next
1727 && TYPE_CODE (arg_types
->type
) == TYPE_CODE_VOID
)
1730 TYPE_FIELDS (func_type
)
1731 = (struct field
*) TYPE_ALLOC (func_type
,
1732 num_args
* sizeof (struct field
));
1733 memset (TYPE_FIELDS (func_type
), 0, num_args
* sizeof (struct field
));
1736 struct type_list
*t
;
1738 /* We stuck each argument type onto the front of the list
1739 when we read it, so the list is reversed. Build the
1740 fields array right-to-left. */
1741 for (t
= arg_types
, i
= num_args
- 1; t
; t
= t
->next
, i
--)
1742 TYPE_FIELD_TYPE (func_type
, i
) = t
->type
;
1744 TYPE_NFIELDS (func_type
) = num_args
;
1745 TYPE_FLAGS (func_type
) |= TYPE_FLAG_PROTOTYPED
;
1751 case 'k': /* Const qualifier on some type (Sun) */
1752 type
= read_type (pp
, objfile
);
1753 type
= make_cv_type (1, TYPE_VOLATILE (type
), type
,
1754 dbx_lookup_type (typenums
));
1757 case 'B': /* Volatile qual on some type (Sun) */
1758 type
= read_type (pp
, objfile
);
1759 type
= make_cv_type (TYPE_CONST (type
), 1, type
,
1760 dbx_lookup_type (typenums
));
1764 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
1765 { /* Member (class & variable) type */
1766 /* FIXME -- we should be doing smash_to_XXX types here. */
1768 struct type
*domain
= read_type (pp
, objfile
);
1769 struct type
*memtype
;
1772 /* Invalid member type data format. */
1773 return error_type (pp
, objfile
);
1776 memtype
= read_type (pp
, objfile
);
1777 type
= dbx_alloc_type (typenums
, objfile
);
1778 smash_to_member_type (type
, domain
, memtype
);
1781 /* type attribute */
1784 /* Skip to the semicolon. */
1785 while (**pp
!= ';' && **pp
!= '\0')
1788 return error_type (pp
, objfile
);
1790 ++ * pp
; /* Skip the semicolon. */
1794 case 's': /* Size attribute */
1795 type_size
= atoi (attr
+ 1);
1800 case 'S': /* String attribute */
1801 /* FIXME: check to see if following type is array? */
1805 case 'V': /* Vector attribute */
1806 /* FIXME: check to see if following type is array? */
1811 /* Ignore unrecognized type attributes, so future compilers
1812 can invent new ones. */
1820 case '#': /* Method (class & fn) type */
1821 if ((*pp
)[0] == '#')
1823 /* We'll get the parameter types from the name. */
1824 struct type
*return_type
;
1827 return_type
= read_type (pp
, objfile
);
1828 if (*(*pp
)++ != ';')
1829 complaint (&symfile_complaints
,
1830 "invalid (minimal) member type data format at symtab pos %d.",
1832 type
= allocate_stub_method (return_type
);
1833 if (typenums
[0] != -1)
1834 *dbx_lookup_type (typenums
) = type
;
1838 struct type
*domain
= read_type (pp
, objfile
);
1839 struct type
*return_type
;
1844 /* Invalid member type data format. */
1845 return error_type (pp
, objfile
);
1849 return_type
= read_type (pp
, objfile
);
1850 args
= read_args (pp
, ';', objfile
, &nargs
, &varargs
);
1851 type
= dbx_alloc_type (typenums
, objfile
);
1852 smash_to_method_type (type
, domain
, return_type
, args
,
1857 case 'r': /* Range type */
1858 type
= read_range_type (pp
, typenums
, objfile
);
1859 if (typenums
[0] != -1)
1860 *dbx_lookup_type (typenums
) = type
;
1865 /* Sun ACC builtin int type */
1866 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1867 if (typenums
[0] != -1)
1868 *dbx_lookup_type (typenums
) = type
;
1872 case 'R': /* Sun ACC builtin float type */
1873 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1874 if (typenums
[0] != -1)
1875 *dbx_lookup_type (typenums
) = type
;
1878 case 'e': /* Enumeration type */
1879 type
= dbx_alloc_type (typenums
, objfile
);
1880 type
= read_enum_type (pp
, type
, objfile
);
1881 if (typenums
[0] != -1)
1882 *dbx_lookup_type (typenums
) = type
;
1885 case 's': /* Struct type */
1886 case 'u': /* Union type */
1888 enum type_code type_code
= TYPE_CODE_UNDEF
;
1889 type
= dbx_alloc_type (typenums
, objfile
);
1890 switch (type_descriptor
)
1893 type_code
= TYPE_CODE_STRUCT
;
1896 type_code
= TYPE_CODE_UNION
;
1899 type
= read_struct_type (pp
, type
, type_code
, objfile
);
1903 case 'a': /* Array type */
1905 return error_type (pp
, objfile
);
1908 type
= dbx_alloc_type (typenums
, objfile
);
1909 type
= read_array_type (pp
, type
, objfile
);
1911 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1913 TYPE_FLAGS (type
) |= TYPE_FLAG_VECTOR
;
1916 case 'S': /* Set or bitstring type */
1917 type1
= read_type (pp
, objfile
);
1918 type
= create_set_type ((struct type
*) NULL
, type1
);
1920 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1921 if (typenums
[0] != -1)
1922 *dbx_lookup_type (typenums
) = type
;
1926 --*pp
; /* Go back to the symbol in error */
1927 /* Particularly important if it was \0! */
1928 return error_type (pp
, objfile
);
1933 warning ("GDB internal error, type is NULL in stabsread.c\n");
1934 return error_type (pp
, objfile
);
1937 /* Size specified in a type attribute overrides any other size. */
1938 if (type_size
!= -1)
1939 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1944 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1945 Return the proper type node for a given builtin type number. */
1947 static struct type
*
1948 rs6000_builtin_type (int typenum
)
1950 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1951 #define NUMBER_RECOGNIZED 34
1952 /* This includes an empty slot for type number -0. */
1953 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1954 struct type
*rettype
= NULL
;
1956 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1958 complaint (&symfile_complaints
, "Unknown builtin type %d", typenum
);
1959 return builtin_type_error
;
1961 if (negative_types
[-typenum
] != NULL
)
1962 return negative_types
[-typenum
];
1964 #if TARGET_CHAR_BIT != 8
1965 #error This code wrong for TARGET_CHAR_BIT not 8
1966 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1967 that if that ever becomes not true, the correct fix will be to
1968 make the size in the struct type to be in bits, not in units of
1975 /* The size of this and all the other types are fixed, defined
1976 by the debugging format. If there is a type called "int" which
1977 is other than 32 bits, then it should use a new negative type
1978 number (or avoid negative type numbers for that case).
1979 See stabs.texinfo. */
1980 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1983 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1986 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1989 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1992 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1993 "unsigned char", NULL
);
1996 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1999 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
2000 "unsigned short", NULL
);
2003 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2004 "unsigned int", NULL
);
2007 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2010 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
2011 "unsigned long", NULL
);
2014 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
2017 /* IEEE single precision (32 bit). */
2018 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
2021 /* IEEE double precision (64 bit). */
2022 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
2025 /* This is an IEEE double on the RS/6000, and different machines with
2026 different sizes for "long double" should use different negative
2027 type numbers. See stabs.texinfo. */
2028 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
2031 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
2034 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2038 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
2041 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
2044 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
2047 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
2051 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
2055 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
2059 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2063 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
2067 /* Complex type consisting of two IEEE single precision values. */
2068 rettype
= init_type (TYPE_CODE_COMPLEX
, 8, 0, "complex", NULL
);
2069 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 4, 0, "float",
2073 /* Complex type consisting of two IEEE double precision values. */
2074 rettype
= init_type (TYPE_CODE_COMPLEX
, 16, 0, "double complex", NULL
);
2075 TYPE_TARGET_TYPE (rettype
) = init_type (TYPE_CODE_FLT
, 8, 0, "double",
2079 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
2082 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
2085 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
2088 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
2091 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
2094 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2095 "unsigned long long", NULL
);
2098 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
2102 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
2105 negative_types
[-typenum
] = rettype
;
2109 /* This page contains subroutines of read_type. */
2111 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2114 update_method_name_from_physname (char **old_name
, char *physname
)
2118 method_name
= method_name_from_physname (physname
);
2120 if (method_name
== NULL
)
2122 complaint (&symfile_complaints
,
2123 "Method has bad physname %s\n", physname
);
2127 if (strcmp (*old_name
, method_name
) != 0)
2130 *old_name
= method_name
;
2133 xfree (method_name
);
2136 /* Read member function stabs info for C++ classes. The form of each member
2139 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2141 An example with two member functions is:
2143 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2145 For the case of overloaded operators, the format is op$::*.funcs, where
2146 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2147 name (such as `+=') and `.' marks the end of the operator name.
2149 Returns 1 for success, 0 for failure. */
2152 read_member_functions (struct field_info
*fip
, char **pp
, struct type
*type
,
2153 struct objfile
*objfile
)
2157 /* Total number of member functions defined in this class. If the class
2158 defines two `f' functions, and one `g' function, then this will have
2160 int total_length
= 0;
2164 struct next_fnfield
*next
;
2165 struct fn_field fn_field
;
2168 struct type
*look_ahead_type
;
2169 struct next_fnfieldlist
*new_fnlist
;
2170 struct next_fnfield
*new_sublist
;
2174 /* Process each list until we find something that is not a member function
2175 or find the end of the functions. */
2179 /* We should be positioned at the start of the function name.
2180 Scan forward to find the first ':' and if it is not the
2181 first of a "::" delimiter, then this is not a member function. */
2193 look_ahead_type
= NULL
;
2196 new_fnlist
= (struct next_fnfieldlist
*)
2197 xmalloc (sizeof (struct next_fnfieldlist
));
2198 make_cleanup (xfree
, new_fnlist
);
2199 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2201 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
2203 /* This is a completely wierd case. In order to stuff in the
2204 names that might contain colons (the usual name delimiter),
2205 Mike Tiemann defined a different name format which is
2206 signalled if the identifier is "op$". In that case, the
2207 format is "op$::XXXX." where XXXX is the name. This is
2208 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2209 /* This lets the user type "break operator+".
2210 We could just put in "+" as the name, but that wouldn't
2212 static char opname
[32] = "op$";
2213 char *o
= opname
+ 3;
2215 /* Skip past '::'. */
2218 STABS_CONTINUE (pp
, objfile
);
2224 main_fn_name
= savestring (opname
, o
- opname
);
2230 main_fn_name
= savestring (*pp
, p
- *pp
);
2231 /* Skip past '::'. */
2234 new_fnlist
->fn_fieldlist
.name
= main_fn_name
;
2239 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2240 make_cleanup (xfree
, new_sublist
);
2241 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2243 /* Check for and handle cretinous dbx symbol name continuation! */
2244 if (look_ahead_type
== NULL
)
2247 STABS_CONTINUE (pp
, objfile
);
2249 new_sublist
->fn_field
.type
= read_type (pp
, objfile
);
2252 /* Invalid symtab info for member function. */
2258 /* g++ version 1 kludge */
2259 new_sublist
->fn_field
.type
= look_ahead_type
;
2260 look_ahead_type
= NULL
;
2270 /* If this is just a stub, then we don't have the real name here. */
2272 if (TYPE_STUB (new_sublist
->fn_field
.type
))
2274 if (!TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
))
2275 TYPE_DOMAIN_TYPE (new_sublist
->fn_field
.type
) = type
;
2276 new_sublist
->fn_field
.is_stub
= 1;
2278 new_sublist
->fn_field
.physname
= savestring (*pp
, p
- *pp
);
2281 /* Set this member function's visibility fields. */
2284 case VISIBILITY_PRIVATE
:
2285 new_sublist
->fn_field
.is_private
= 1;
2287 case VISIBILITY_PROTECTED
:
2288 new_sublist
->fn_field
.is_protected
= 1;
2292 STABS_CONTINUE (pp
, objfile
);
2295 case 'A': /* Normal functions. */
2296 new_sublist
->fn_field
.is_const
= 0;
2297 new_sublist
->fn_field
.is_volatile
= 0;
2300 case 'B': /* `const' member functions. */
2301 new_sublist
->fn_field
.is_const
= 1;
2302 new_sublist
->fn_field
.is_volatile
= 0;
2305 case 'C': /* `volatile' member function. */
2306 new_sublist
->fn_field
.is_const
= 0;
2307 new_sublist
->fn_field
.is_volatile
= 1;
2310 case 'D': /* `const volatile' member function. */
2311 new_sublist
->fn_field
.is_const
= 1;
2312 new_sublist
->fn_field
.is_volatile
= 1;
2315 case '*': /* File compiled with g++ version 1 -- no info */
2320 complaint (&symfile_complaints
,
2321 "const/volatile indicator missing, got '%c'", **pp
);
2330 /* virtual member function, followed by index.
2331 The sign bit is set to distinguish pointers-to-methods
2332 from virtual function indicies. Since the array is
2333 in words, the quantity must be shifted left by 1
2334 on 16 bit machine, and by 2 on 32 bit machine, forcing
2335 the sign bit out, and usable as a valid index into
2336 the array. Remove the sign bit here. */
2337 new_sublist
->fn_field
.voffset
=
2338 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2342 STABS_CONTINUE (pp
, objfile
);
2343 if (**pp
== ';' || **pp
== '\0')
2345 /* Must be g++ version 1. */
2346 new_sublist
->fn_field
.fcontext
= 0;
2350 /* Figure out from whence this virtual function came.
2351 It may belong to virtual function table of
2352 one of its baseclasses. */
2353 look_ahead_type
= read_type (pp
, objfile
);
2356 /* g++ version 1 overloaded methods. */
2360 new_sublist
->fn_field
.fcontext
= look_ahead_type
;
2369 look_ahead_type
= NULL
;
2375 /* static member function. */
2377 int slen
= strlen (main_fn_name
);
2379 new_sublist
->fn_field
.voffset
= VOFFSET_STATIC
;
2381 /* For static member functions, we can't tell if they
2382 are stubbed, as they are put out as functions, and not as
2384 GCC v2 emits the fully mangled name if
2385 dbxout.c:flag_minimal_debug is not set, so we have to
2386 detect a fully mangled physname here and set is_stub
2387 accordingly. Fully mangled physnames in v2 start with
2388 the member function name, followed by two underscores.
2389 GCC v3 currently always emits stubbed member functions,
2390 but with fully mangled physnames, which start with _Z. */
2391 if (!(strncmp (new_sublist
->fn_field
.physname
,
2392 main_fn_name
, slen
) == 0
2393 && new_sublist
->fn_field
.physname
[slen
] == '_'
2394 && new_sublist
->fn_field
.physname
[slen
+ 1] == '_'))
2396 new_sublist
->fn_field
.is_stub
= 1;
2403 complaint (&symfile_complaints
,
2404 "member function type missing, got '%c'", (*pp
)[-1]);
2405 /* Fall through into normal member function. */
2408 /* normal member function. */
2409 new_sublist
->fn_field
.voffset
= 0;
2410 new_sublist
->fn_field
.fcontext
= 0;
2414 new_sublist
->next
= sublist
;
2415 sublist
= new_sublist
;
2417 STABS_CONTINUE (pp
, objfile
);
2419 while (**pp
!= ';' && **pp
!= '\0');
2422 STABS_CONTINUE (pp
, objfile
);
2424 /* Skip GCC 3.X member functions which are duplicates of the callable
2425 constructor/destructor. */
2426 if (strcmp (main_fn_name
, "__base_ctor") == 0
2427 || strcmp (main_fn_name
, "__base_dtor") == 0
2428 || strcmp (main_fn_name
, "__deleting_dtor") == 0)
2430 xfree (main_fn_name
);
2435 int has_destructor
= 0, has_other
= 0;
2437 struct next_fnfield
*tmp_sublist
;
2439 /* Various versions of GCC emit various mostly-useless
2440 strings in the name field for special member functions.
2442 For stub methods, we need to defer correcting the name
2443 until we are ready to unstub the method, because the current
2444 name string is used by gdb_mangle_name. The only stub methods
2445 of concern here are GNU v2 operators; other methods have their
2446 names correct (see caveat below).
2448 For non-stub methods, in GNU v3, we have a complete physname.
2449 Therefore we can safely correct the name now. This primarily
2450 affects constructors and destructors, whose name will be
2451 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2452 operators will also have incorrect names; for instance,
2453 "operator int" will be named "operator i" (i.e. the type is
2456 For non-stub methods in GNU v2, we have no easy way to
2457 know if we have a complete physname or not. For most
2458 methods the result depends on the platform (if CPLUS_MARKER
2459 can be `$' or `.', it will use minimal debug information, or
2460 otherwise the full physname will be included).
2462 Rather than dealing with this, we take a different approach.
2463 For v3 mangled names, we can use the full physname; for v2,
2464 we use cplus_demangle_opname (which is actually v2 specific),
2465 because the only interesting names are all operators - once again
2466 barring the caveat below. Skip this process if any method in the
2467 group is a stub, to prevent our fouling up the workings of
2470 The caveat: GCC 2.95.x (and earlier?) put constructors and
2471 destructors in the same method group. We need to split this
2472 into two groups, because they should have different names.
2473 So for each method group we check whether it contains both
2474 routines whose physname appears to be a destructor (the physnames
2475 for and destructors are always provided, due to quirks in v2
2476 mangling) and routines whose physname does not appear to be a
2477 destructor. If so then we break up the list into two halves.
2478 Even if the constructors and destructors aren't in the same group
2479 the destructor will still lack the leading tilde, so that also
2482 So, to summarize what we expect and handle here:
2484 Given Given Real Real Action
2485 method name physname physname method name
2487 __opi [none] __opi__3Foo operator int opname
2489 Foo _._3Foo _._3Foo ~Foo separate and
2491 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2492 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2495 tmp_sublist
= sublist
;
2496 while (tmp_sublist
!= NULL
)
2498 if (tmp_sublist
->fn_field
.is_stub
)
2500 if (tmp_sublist
->fn_field
.physname
[0] == '_'
2501 && tmp_sublist
->fn_field
.physname
[1] == 'Z')
2504 if (is_destructor_name (tmp_sublist
->fn_field
.physname
))
2509 tmp_sublist
= tmp_sublist
->next
;
2512 if (has_destructor
&& has_other
)
2514 struct next_fnfieldlist
*destr_fnlist
;
2515 struct next_fnfield
*last_sublist
;
2517 /* Create a new fn_fieldlist for the destructors. */
2519 destr_fnlist
= (struct next_fnfieldlist
*)
2520 xmalloc (sizeof (struct next_fnfieldlist
));
2521 make_cleanup (xfree
, destr_fnlist
);
2522 memset (destr_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2523 destr_fnlist
->fn_fieldlist
.name
2524 = obconcat (&objfile
->objfile_obstack
, "", "~",
2525 new_fnlist
->fn_fieldlist
.name
);
2527 destr_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2528 obstack_alloc (&objfile
->objfile_obstack
,
2529 sizeof (struct fn_field
) * has_destructor
);
2530 memset (destr_fnlist
->fn_fieldlist
.fn_fields
, 0,
2531 sizeof (struct fn_field
) * has_destructor
);
2532 tmp_sublist
= sublist
;
2533 last_sublist
= NULL
;
2535 while (tmp_sublist
!= NULL
)
2537 if (!is_destructor_name (tmp_sublist
->fn_field
.physname
))
2539 tmp_sublist
= tmp_sublist
->next
;
2543 destr_fnlist
->fn_fieldlist
.fn_fields
[i
++]
2544 = tmp_sublist
->fn_field
;
2546 last_sublist
->next
= tmp_sublist
->next
;
2548 sublist
= tmp_sublist
->next
;
2549 last_sublist
= tmp_sublist
;
2550 tmp_sublist
= tmp_sublist
->next
;
2553 destr_fnlist
->fn_fieldlist
.length
= has_destructor
;
2554 destr_fnlist
->next
= fip
->fnlist
;
2555 fip
->fnlist
= destr_fnlist
;
2557 total_length
+= has_destructor
;
2558 length
-= has_destructor
;
2562 /* v3 mangling prevents the use of abbreviated physnames,
2563 so we can do this here. There are stubbed methods in v3
2565 - in -gstabs instead of -gstabs+
2566 - or for static methods, which are output as a function type
2567 instead of a method type. */
2569 update_method_name_from_physname (&new_fnlist
->fn_fieldlist
.name
,
2570 sublist
->fn_field
.physname
);
2572 else if (has_destructor
&& new_fnlist
->fn_fieldlist
.name
[0] != '~')
2574 new_fnlist
->fn_fieldlist
.name
= concat ("~", main_fn_name
, NULL
);
2575 xfree (main_fn_name
);
2579 char dem_opname
[256];
2581 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2582 dem_opname
, DMGL_ANSI
);
2584 ret
= cplus_demangle_opname (new_fnlist
->fn_fieldlist
.name
,
2587 new_fnlist
->fn_fieldlist
.name
2588 = obsavestring (dem_opname
, strlen (dem_opname
),
2589 &objfile
->objfile_obstack
);
2592 new_fnlist
->fn_fieldlist
.fn_fields
= (struct fn_field
*)
2593 obstack_alloc (&objfile
->objfile_obstack
,
2594 sizeof (struct fn_field
) * length
);
2595 memset (new_fnlist
->fn_fieldlist
.fn_fields
, 0,
2596 sizeof (struct fn_field
) * length
);
2597 for (i
= length
; (i
--, sublist
); sublist
= sublist
->next
)
2599 new_fnlist
->fn_fieldlist
.fn_fields
[i
] = sublist
->fn_field
;
2602 new_fnlist
->fn_fieldlist
.length
= length
;
2603 new_fnlist
->next
= fip
->fnlist
;
2604 fip
->fnlist
= new_fnlist
;
2606 total_length
+= length
;
2612 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2613 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2614 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2615 memset (TYPE_FN_FIELDLISTS (type
), 0,
2616 sizeof (struct fn_fieldlist
) * nfn_fields
);
2617 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2618 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2624 /* Special GNU C++ name.
2626 Returns 1 for success, 0 for failure. "failure" means that we can't
2627 keep parsing and it's time for error_type(). */
2630 read_cpp_abbrev (struct field_info
*fip
, char **pp
, struct type
*type
,
2631 struct objfile
*objfile
)
2636 struct type
*context
;
2646 /* At this point, *pp points to something like "22:23=*22...",
2647 where the type number before the ':' is the "context" and
2648 everything after is a regular type definition. Lookup the
2649 type, find it's name, and construct the field name. */
2651 context
= read_type (pp
, objfile
);
2655 case 'f': /* $vf -- a virtual function table pointer */
2656 name
= type_name_no_tag (context
);
2661 fip
->list
->field
.name
=
2662 obconcat (&objfile
->objfile_obstack
, vptr_name
, name
, "");
2665 case 'b': /* $vb -- a virtual bsomethingorother */
2666 name
= type_name_no_tag (context
);
2669 complaint (&symfile_complaints
,
2670 "C++ abbreviated type name unknown at symtab pos %d",
2674 fip
->list
->field
.name
=
2675 obconcat (&objfile
->objfile_obstack
, vb_name
, name
, "");
2679 invalid_cpp_abbrev_complaint (*pp
);
2680 fip
->list
->field
.name
=
2681 obconcat (&objfile
->objfile_obstack
,
2682 "INVALID_CPLUSPLUS_ABBREV", "", "");
2686 /* At this point, *pp points to the ':'. Skip it and read the
2692 invalid_cpp_abbrev_complaint (*pp
);
2695 fip
->list
->field
.type
= read_type (pp
, objfile
);
2697 (*pp
)++; /* Skip the comma. */
2703 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
2707 /* This field is unpacked. */
2708 FIELD_BITSIZE (fip
->list
->field
) = 0;
2709 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2713 invalid_cpp_abbrev_complaint (*pp
);
2714 /* We have no idea what syntax an unrecognized abbrev would have, so
2715 better return 0. If we returned 1, we would need to at least advance
2716 *pp to avoid an infinite loop. */
2723 read_one_struct_field (struct field_info
*fip
, char **pp
, char *p
,
2724 struct type
*type
, struct objfile
*objfile
)
2726 fip
->list
->field
.name
=
2727 obsavestring (*pp
, p
- *pp
, &objfile
->objfile_obstack
);
2730 /* This means we have a visibility for a field coming. */
2734 fip
->list
->visibility
= *(*pp
)++;
2738 /* normal dbx-style format, no explicit visibility */
2739 fip
->list
->visibility
= VISIBILITY_PUBLIC
;
2742 fip
->list
->field
.type
= read_type (pp
, objfile
);
2747 /* Possible future hook for nested types. */
2750 fip
->list
->field
.bitpos
= (long) -2; /* nested type */
2760 /* Static class member. */
2761 SET_FIELD_PHYSNAME (fip
->list
->field
, savestring (*pp
, p
- *pp
));
2765 else if (**pp
!= ',')
2767 /* Bad structure-type format. */
2768 stabs_general_complaint ("bad structure-type format");
2772 (*pp
)++; /* Skip the comma. */
2776 FIELD_BITPOS (fip
->list
->field
) = read_huge_number (pp
, ',', &nbits
);
2779 stabs_general_complaint ("bad structure-type format");
2782 FIELD_BITSIZE (fip
->list
->field
) = read_huge_number (pp
, ';', &nbits
);
2785 stabs_general_complaint ("bad structure-type format");
2790 if (FIELD_BITPOS (fip
->list
->field
) == 0
2791 && FIELD_BITSIZE (fip
->list
->field
) == 0)
2793 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2794 it is a field which has been optimized out. The correct stab for
2795 this case is to use VISIBILITY_IGNORE, but that is a recent
2796 invention. (2) It is a 0-size array. For example
2797 union { int num; char str[0]; } foo. Printing "<no value>" for
2798 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2799 will continue to work, and a 0-size array as a whole doesn't
2800 have any contents to print.
2802 I suspect this probably could also happen with gcc -gstabs (not
2803 -gstabs+) for static fields, and perhaps other C++ extensions.
2804 Hopefully few people use -gstabs with gdb, since it is intended
2805 for dbx compatibility. */
2807 /* Ignore this field. */
2808 fip
->list
->visibility
= VISIBILITY_IGNORE
;
2812 /* Detect an unpacked field and mark it as such.
2813 dbx gives a bit size for all fields.
2814 Note that forward refs cannot be packed,
2815 and treat enums as if they had the width of ints. */
2817 struct type
*field_type
= check_typedef (FIELD_TYPE (fip
->list
->field
));
2819 if (TYPE_CODE (field_type
) != TYPE_CODE_INT
2820 && TYPE_CODE (field_type
) != TYPE_CODE_RANGE
2821 && TYPE_CODE (field_type
) != TYPE_CODE_BOOL
2822 && TYPE_CODE (field_type
) != TYPE_CODE_ENUM
)
2824 FIELD_BITSIZE (fip
->list
->field
) = 0;
2826 if ((FIELD_BITSIZE (fip
->list
->field
)
2827 == TARGET_CHAR_BIT
* TYPE_LENGTH (field_type
)
2828 || (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
2829 && FIELD_BITSIZE (fip
->list
->field
) == TARGET_INT_BIT
)
2832 FIELD_BITPOS (fip
->list
->field
) % 8 == 0)
2834 FIELD_BITSIZE (fip
->list
->field
) = 0;
2840 /* Read struct or class data fields. They have the form:
2842 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2844 At the end, we see a semicolon instead of a field.
2846 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2849 The optional VISIBILITY is one of:
2851 '/0' (VISIBILITY_PRIVATE)
2852 '/1' (VISIBILITY_PROTECTED)
2853 '/2' (VISIBILITY_PUBLIC)
2854 '/9' (VISIBILITY_IGNORE)
2856 or nothing, for C style fields with public visibility.
2858 Returns 1 for success, 0 for failure. */
2861 read_struct_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
2862 struct objfile
*objfile
)
2865 struct nextfield
*new;
2867 /* We better set p right now, in case there are no fields at all... */
2871 /* Read each data member type until we find the terminating ';' at the end of
2872 the data member list, or break for some other reason such as finding the
2873 start of the member function list. */
2874 /* Stab string for structure/union does not end with two ';' in
2875 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
2877 while (**pp
!= ';' && **pp
!= '\0')
2879 STABS_CONTINUE (pp
, objfile
);
2880 /* Get space to record the next field's data. */
2881 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2882 make_cleanup (xfree
, new);
2883 memset (new, 0, sizeof (struct nextfield
));
2884 new->next
= fip
->list
;
2887 /* Get the field name. */
2890 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2891 unless the CPLUS_MARKER is followed by an underscore, in
2892 which case it is just the name of an anonymous type, which we
2893 should handle like any other type name. */
2895 if (is_cplus_marker (p
[0]) && p
[1] != '_')
2897 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2902 /* Look for the ':' that separates the field name from the field
2903 values. Data members are delimited by a single ':', while member
2904 functions are delimited by a pair of ':'s. When we hit the member
2905 functions (if any), terminate scan loop and return. */
2907 while (*p
!= ':' && *p
!= '\0')
2914 /* Check to see if we have hit the member functions yet. */
2919 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2921 if (p
[0] == ':' && p
[1] == ':')
2923 /* (the deleted) chill the list of fields: the last entry (at
2924 the head) is a partially constructed entry which we now
2926 fip
->list
= fip
->list
->next
;
2931 /* The stabs for C++ derived classes contain baseclass information which
2932 is marked by a '!' character after the total size. This function is
2933 called when we encounter the baseclass marker, and slurps up all the
2934 baseclass information.
2936 Immediately following the '!' marker is the number of base classes that
2937 the class is derived from, followed by information for each base class.
2938 For each base class, there are two visibility specifiers, a bit offset
2939 to the base class information within the derived class, a reference to
2940 the type for the base class, and a terminating semicolon.
2942 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2944 Baseclass information marker __________________|| | | | | | |
2945 Number of baseclasses __________________________| | | | | | |
2946 Visibility specifiers (2) ________________________| | | | | |
2947 Offset in bits from start of class _________________| | | | |
2948 Type number for base class ___________________________| | | |
2949 Visibility specifiers (2) _______________________________| | |
2950 Offset in bits from start of class ________________________| |
2951 Type number of base class ____________________________________|
2953 Return 1 for success, 0 for (error-type-inducing) failure. */
2959 read_baseclasses (struct field_info
*fip
, char **pp
, struct type
*type
,
2960 struct objfile
*objfile
)
2963 struct nextfield
*new;
2971 /* Skip the '!' baseclass information marker. */
2975 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2978 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2984 /* Some stupid compilers have trouble with the following, so break
2985 it up into simpler expressions. */
2986 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2987 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2990 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2993 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2994 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2998 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
3000 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
3002 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
3003 make_cleanup (xfree
, new);
3004 memset (new, 0, sizeof (struct nextfield
));
3005 new->next
= fip
->list
;
3007 FIELD_BITSIZE (new->field
) = 0; /* this should be an unpacked field! */
3009 STABS_CONTINUE (pp
, objfile
);
3013 /* Nothing to do. */
3016 SET_TYPE_FIELD_VIRTUAL (type
, i
);
3019 /* Unknown character. Complain and treat it as non-virtual. */
3021 complaint (&symfile_complaints
,
3022 "Unknown virtual character `%c' for baseclass", **pp
);
3027 new->visibility
= *(*pp
)++;
3028 switch (new->visibility
)
3030 case VISIBILITY_PRIVATE
:
3031 case VISIBILITY_PROTECTED
:
3032 case VISIBILITY_PUBLIC
:
3035 /* Bad visibility format. Complain and treat it as
3038 complaint (&symfile_complaints
,
3039 "Unknown visibility `%c' for baseclass",
3041 new->visibility
= VISIBILITY_PUBLIC
;
3048 /* The remaining value is the bit offset of the portion of the object
3049 corresponding to this baseclass. Always zero in the absence of
3050 multiple inheritance. */
3052 FIELD_BITPOS (new->field
) = read_huge_number (pp
, ',', &nbits
);
3057 /* The last piece of baseclass information is the type of the
3058 base class. Read it, and remember it's type name as this
3061 new->field
.type
= read_type (pp
, objfile
);
3062 new->field
.name
= type_name_no_tag (new->field
.type
);
3064 /* skip trailing ';' and bump count of number of fields seen */
3073 /* The tail end of stabs for C++ classes that contain a virtual function
3074 pointer contains a tilde, a %, and a type number.
3075 The type number refers to the base class (possibly this class itself) which
3076 contains the vtable pointer for the current class.
3078 This function is called when we have parsed all the method declarations,
3079 so we can look for the vptr base class info. */
3082 read_tilde_fields (struct field_info
*fip
, char **pp
, struct type
*type
,
3083 struct objfile
*objfile
)
3087 STABS_CONTINUE (pp
, objfile
);
3089 /* If we are positioned at a ';', then skip it. */
3099 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
3101 /* Obsolete flags that used to indicate the presence
3102 of constructors and/or destructors. */
3106 /* Read either a '%' or the final ';'. */
3107 if (*(*pp
)++ == '%')
3109 /* The next number is the type number of the base class
3110 (possibly our own class) which supplies the vtable for
3111 this class. Parse it out, and search that class to find
3112 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3113 and TYPE_VPTR_FIELDNO. */
3118 t
= read_type (pp
, objfile
);
3120 while (*p
!= '\0' && *p
!= ';')
3126 /* Premature end of symbol. */
3130 TYPE_VPTR_BASETYPE (type
) = t
;
3131 if (type
== t
) /* Our own class provides vtbl ptr */
3133 for (i
= TYPE_NFIELDS (t
) - 1;
3134 i
>= TYPE_N_BASECLASSES (t
);
3137 char *name
= TYPE_FIELD_NAME (t
, i
);
3138 if (!strncmp (name
, vptr_name
, sizeof (vptr_name
) - 2)
3139 && is_cplus_marker (name
[sizeof (vptr_name
) - 2]))
3141 TYPE_VPTR_FIELDNO (type
) = i
;
3145 /* Virtual function table field not found. */
3146 complaint (&symfile_complaints
,
3147 "virtual function table pointer not found when defining class `%s'",
3153 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
3164 attach_fn_fields_to_type (struct field_info
*fip
, struct type
*type
)
3168 for (n
= TYPE_NFN_FIELDS (type
);
3169 fip
->fnlist
!= NULL
;
3170 fip
->fnlist
= fip
->fnlist
->next
)
3172 --n
; /* Circumvent Sun3 compiler bug */
3173 TYPE_FN_FIELDLISTS (type
)[n
] = fip
->fnlist
->fn_fieldlist
;
3178 /* Create the vector of fields, and record how big it is.
3179 We need this info to record proper virtual function table information
3180 for this class's virtual functions. */
3183 attach_fields_to_type (struct field_info
*fip
, struct type
*type
,
3184 struct objfile
*objfile
)
3187 int non_public_fields
= 0;
3188 struct nextfield
*scan
;
3190 /* Count up the number of fields that we have, as well as taking note of
3191 whether or not there are any non-public fields, which requires us to
3192 allocate and build the private_field_bits and protected_field_bits
3195 for (scan
= fip
->list
; scan
!= NULL
; scan
= scan
->next
)
3198 if (scan
->visibility
!= VISIBILITY_PUBLIC
)
3200 non_public_fields
++;
3204 /* Now we know how many fields there are, and whether or not there are any
3205 non-public fields. Record the field count, allocate space for the
3206 array of fields, and create blank visibility bitfields if necessary. */
3208 TYPE_NFIELDS (type
) = nfields
;
3209 TYPE_FIELDS (type
) = (struct field
*)
3210 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
3211 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
3213 if (non_public_fields
)
3215 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
3217 TYPE_FIELD_PRIVATE_BITS (type
) =
3218 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3219 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
3221 TYPE_FIELD_PROTECTED_BITS (type
) =
3222 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3223 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
3225 TYPE_FIELD_IGNORE_BITS (type
) =
3226 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
3227 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
3230 /* Copy the saved-up fields into the field vector. Start from the head
3231 of the list, adding to the tail of the field array, so that they end
3232 up in the same order in the array in which they were added to the list. */
3234 while (nfields
-- > 0)
3236 TYPE_FIELD (type
, nfields
) = fip
->list
->field
;
3237 switch (fip
->list
->visibility
)
3239 case VISIBILITY_PRIVATE
:
3240 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
3243 case VISIBILITY_PROTECTED
:
3244 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
3247 case VISIBILITY_IGNORE
:
3248 SET_TYPE_FIELD_IGNORE (type
, nfields
);
3251 case VISIBILITY_PUBLIC
:
3255 /* Unknown visibility. Complain and treat it as public. */
3257 complaint (&symfile_complaints
, "Unknown visibility `%c' for field",
3258 fip
->list
->visibility
);
3262 fip
->list
= fip
->list
->next
;
3268 /* Complain that the compiler has emitted more than one definition for the
3269 structure type TYPE. */
3271 complain_about_struct_wipeout (struct type
*type
)
3276 if (TYPE_TAG_NAME (type
))
3278 name
= TYPE_TAG_NAME (type
);
3279 switch (TYPE_CODE (type
))
3281 case TYPE_CODE_STRUCT
: kind
= "struct "; break;
3282 case TYPE_CODE_UNION
: kind
= "union "; break;
3283 case TYPE_CODE_ENUM
: kind
= "enum "; break;
3287 else if (TYPE_NAME (type
))
3289 name
= TYPE_NAME (type
);
3298 complaint (&symfile_complaints
,
3299 "struct/union type gets multiply defined: %s%s", kind
, name
);
3303 /* Read the description of a structure (or union type) and return an object
3304 describing the type.
3306 PP points to a character pointer that points to the next unconsumed token
3307 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3308 *PP will point to "4a:1,0,32;;".
3310 TYPE points to an incomplete type that needs to be filled in.
3312 OBJFILE points to the current objfile from which the stabs information is
3313 being read. (Note that it is redundant in that TYPE also contains a pointer
3314 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3317 static struct type
*
3318 read_struct_type (char **pp
, struct type
*type
, enum type_code type_code
,
3319 struct objfile
*objfile
)
3321 struct cleanup
*back_to
;
3322 struct field_info fi
;
3327 /* When describing struct/union/class types in stabs, G++ always drops
3328 all qualifications from the name. So if you've got:
3329 struct A { ... struct B { ... }; ... };
3330 then G++ will emit stabs for `struct A::B' that call it simply
3331 `struct B'. Obviously, if you've got a real top-level definition for
3332 `struct B', or other nested definitions, this is going to cause
3335 Obviously, GDB can't fix this by itself, but it can at least avoid
3336 scribbling on existing structure type objects when new definitions
3338 if (! (TYPE_CODE (type
) == TYPE_CODE_UNDEF
3339 || TYPE_STUB (type
)))
3341 complain_about_struct_wipeout (type
);
3343 /* It's probably best to return the type unchanged. */
3347 back_to
= make_cleanup (null_cleanup
, 0);
3349 INIT_CPLUS_SPECIFIC (type
);
3350 TYPE_CODE (type
) = type_code
;
3351 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3353 /* First comes the total size in bytes. */
3357 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
3359 return error_type (pp
, objfile
);
3362 /* Now read the baseclasses, if any, read the regular C struct or C++
3363 class member fields, attach the fields to the type, read the C++
3364 member functions, attach them to the type, and then read any tilde
3365 field (baseclass specifier for the class holding the main vtable). */
3367 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
3368 || !read_struct_fields (&fi
, pp
, type
, objfile
)
3369 || !attach_fields_to_type (&fi
, type
, objfile
)
3370 || !read_member_functions (&fi
, pp
, type
, objfile
)
3371 || !attach_fn_fields_to_type (&fi
, type
)
3372 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
3374 type
= error_type (pp
, objfile
);
3377 do_cleanups (back_to
);
3381 /* Read a definition of an array type,
3382 and create and return a suitable type object.
3383 Also creates a range type which represents the bounds of that
3386 static struct type
*
3387 read_array_type (char **pp
, struct type
*type
,
3388 struct objfile
*objfile
)
3390 struct type
*index_type
, *element_type
, *range_type
;
3395 /* Format of an array type:
3396 "ar<index type>;lower;upper;<array_contents_type>".
3397 OS9000: "arlower,upper;<array_contents_type>".
3399 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3400 for these, produce a type like float[][]. */
3403 index_type
= read_type (pp
, objfile
);
3405 /* Improper format of array type decl. */
3406 return error_type (pp
, objfile
);
3410 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3415 lower
= read_huge_number (pp
, ';', &nbits
);
3418 return error_type (pp
, objfile
);
3420 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3425 upper
= read_huge_number (pp
, ';', &nbits
);
3427 return error_type (pp
, objfile
);
3429 element_type
= read_type (pp
, objfile
);
3438 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3439 type
= create_array_type (type
, element_type
, range_type
);
3445 /* Read a definition of an enumeration type,
3446 and create and return a suitable type object.
3447 Also defines the symbols that represent the values of the type. */
3449 static struct type
*
3450 read_enum_type (char **pp
, struct type
*type
,
3451 struct objfile
*objfile
)
3458 struct pending
**symlist
;
3459 struct pending
*osyms
, *syms
;
3462 int unsigned_enum
= 1;
3465 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3466 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3467 to do? For now, force all enum values to file scope. */
3468 if (within_function
)
3469 symlist
= &local_symbols
;
3472 symlist
= &file_symbols
;
3474 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3476 /* The aix4 compiler emits an extra field before the enum members;
3477 my guess is it's a type of some sort. Just ignore it. */
3480 /* Skip over the type. */
3484 /* Skip over the colon. */
3488 /* Read the value-names and their values.
3489 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3490 A semicolon or comma instead of a NAME means the end. */
3491 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3493 STABS_CONTINUE (pp
, objfile
);
3497 name
= obsavestring (*pp
, p
- *pp
, &objfile
->objfile_obstack
);
3499 n
= read_huge_number (pp
, ',', &nbits
);
3501 return error_type (pp
, objfile
);
3503 sym
= (struct symbol
*)
3504 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
3505 memset (sym
, 0, sizeof (struct symbol
));
3506 DEPRECATED_SYMBOL_NAME (sym
) = name
;
3507 SYMBOL_LANGUAGE (sym
) = current_subfile
->language
;
3508 SYMBOL_CLASS (sym
) = LOC_CONST
;
3509 SYMBOL_DOMAIN (sym
) = VAR_DOMAIN
;
3510 SYMBOL_VALUE (sym
) = n
;
3513 add_symbol_to_list (sym
, symlist
);
3518 (*pp
)++; /* Skip the semicolon. */
3520 /* Now fill in the fields of the type-structure. */
3522 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3523 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3524 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3526 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3527 TYPE_NFIELDS (type
) = nsyms
;
3528 TYPE_FIELDS (type
) = (struct field
*)
3529 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3530 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3532 /* Find the symbols for the values and put them into the type.
3533 The symbols can be found in the symlist that we put them on
3534 to cause them to be defined. osyms contains the old value
3535 of that symlist; everything up to there was defined by us. */
3536 /* Note that we preserve the order of the enum constants, so
3537 that in something like "enum {FOO, LAST_THING=FOO}" we print
3538 FOO, not LAST_THING. */
3540 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3542 int last
= syms
== osyms
? o_nsyms
: 0;
3543 int j
= syms
->nsyms
;
3544 for (; --j
>= last
; --n
)
3546 struct symbol
*xsym
= syms
->symbol
[j
];
3547 SYMBOL_TYPE (xsym
) = type
;
3548 TYPE_FIELD_NAME (type
, n
) = DEPRECATED_SYMBOL_NAME (xsym
);
3549 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3550 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3559 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3560 typedefs in every file (for int, long, etc):
3562 type = b <signed> <width> <format type>; <offset>; <nbits>
3564 optional format type = c or b for char or boolean.
3565 offset = offset from high order bit to start bit of type.
3566 width is # bytes in object of this type, nbits is # bits in type.
3568 The width/offset stuff appears to be for small objects stored in
3569 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3572 static struct type
*
3573 read_sun_builtin_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3578 enum type_code code
= TYPE_CODE_INT
;
3589 return error_type (pp
, objfile
);
3593 /* For some odd reason, all forms of char put a c here. This is strange
3594 because no other type has this honor. We can safely ignore this because
3595 we actually determine 'char'acterness by the number of bits specified in
3597 Boolean forms, e.g Fortran logical*X, put a b here. */
3601 else if (**pp
== 'b')
3603 code
= TYPE_CODE_BOOL
;
3607 /* The first number appears to be the number of bytes occupied
3608 by this type, except that unsigned short is 4 instead of 2.
3609 Since this information is redundant with the third number,
3610 we will ignore it. */
3611 read_huge_number (pp
, ';', &nbits
);
3613 return error_type (pp
, objfile
);
3615 /* The second number is always 0, so ignore it too. */
3616 read_huge_number (pp
, ';', &nbits
);
3618 return error_type (pp
, objfile
);
3620 /* The third number is the number of bits for this type. */
3621 type_bits
= read_huge_number (pp
, 0, &nbits
);
3623 return error_type (pp
, objfile
);
3624 /* The type *should* end with a semicolon. If it are embedded
3625 in a larger type the semicolon may be the only way to know where
3626 the type ends. If this type is at the end of the stabstring we
3627 can deal with the omitted semicolon (but we don't have to like
3628 it). Don't bother to complain(), Sun's compiler omits the semicolon
3634 return init_type (TYPE_CODE_VOID
, 1,
3635 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3638 return init_type (code
,
3639 type_bits
/ TARGET_CHAR_BIT
,
3640 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *) NULL
,
3644 static struct type
*
3645 read_sun_floating_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3650 struct type
*rettype
;
3652 /* The first number has more details about the type, for example
3654 details
= read_huge_number (pp
, ';', &nbits
);
3656 return error_type (pp
, objfile
);
3658 /* The second number is the number of bytes occupied by this type */
3659 nbytes
= read_huge_number (pp
, ';', &nbits
);
3661 return error_type (pp
, objfile
);
3663 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3664 || details
== NF_COMPLEX32
)
3666 rettype
= init_type (TYPE_CODE_COMPLEX
, nbytes
, 0, NULL
, objfile
);
3667 TYPE_TARGET_TYPE (rettype
)
3668 = init_type (TYPE_CODE_FLT
, nbytes
/ 2, 0, NULL
, objfile
);
3672 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3675 /* Read a number from the string pointed to by *PP.
3676 The value of *PP is advanced over the number.
3677 If END is nonzero, the character that ends the
3678 number must match END, or an error happens;
3679 and that character is skipped if it does match.
3680 If END is zero, *PP is left pointing to that character.
3682 If the number fits in a long, set *BITS to 0 and return the value.
3683 If not, set *BITS to be the number of bits in the number and return 0.
3685 If encounter garbage, set *BITS to -1 and return 0. */
3688 read_huge_number (char **pp
, int end
, int *bits
)
3705 /* Leading zero means octal. GCC uses this to output values larger
3706 than an int (because that would be hard in decimal). */
3713 upper_limit
= LONG_MAX
/ radix
;
3715 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3717 if (n
<= upper_limit
)
3720 n
+= c
- '0'; /* FIXME this overflows anyway */
3725 /* This depends on large values being output in octal, which is
3732 /* Ignore leading zeroes. */
3736 else if (c
== '2' || c
== '3')
3762 /* Large decimal constants are an error (because it is hard to
3763 count how many bits are in them). */
3769 /* -0x7f is the same as 0x80. So deal with it by adding one to
3770 the number of bits. */
3782 /* It's *BITS which has the interesting information. */
3786 static struct type
*
3787 read_range_type (char **pp
, int typenums
[2], struct objfile
*objfile
)
3789 char *orig_pp
= *pp
;
3794 struct type
*result_type
;
3795 struct type
*index_type
= NULL
;
3797 /* First comes a type we are a subrange of.
3798 In C it is usually 0, 1 or the type being defined. */
3799 if (read_type_number (pp
, rangenums
) != 0)
3800 return error_type (pp
, objfile
);
3801 self_subrange
= (rangenums
[0] == typenums
[0] &&
3802 rangenums
[1] == typenums
[1]);
3807 index_type
= read_type (pp
, objfile
);
3810 /* A semicolon should now follow; skip it. */
3814 /* The remaining two operands are usually lower and upper bounds
3815 of the range. But in some special cases they mean something else. */
3816 n2
= read_huge_number (pp
, ';', &n2bits
);
3817 n3
= read_huge_number (pp
, ';', &n3bits
);
3819 if (n2bits
== -1 || n3bits
== -1)
3820 return error_type (pp
, objfile
);
3823 goto handle_true_range
;
3825 /* If limits are huge, must be large integral type. */
3826 if (n2bits
!= 0 || n3bits
!= 0)
3828 char got_signed
= 0;
3829 char got_unsigned
= 0;
3830 /* Number of bits in the type. */
3833 /* Range from 0 to <large number> is an unsigned large integral type. */
3834 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3839 /* Range from <large number> to <large number>-1 is a large signed
3840 integral type. Take care of the case where <large number> doesn't
3841 fit in a long but <large number>-1 does. */
3842 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3843 || (n2bits
!= 0 && n3bits
== 0
3844 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3851 if (got_signed
|| got_unsigned
)
3853 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3854 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3858 return error_type (pp
, objfile
);
3861 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3862 if (self_subrange
&& n2
== 0 && n3
== 0)
3863 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3865 /* If n3 is zero and n2 is positive, we want a floating type, and n2
3866 is the width in bytes.
3868 Fortran programs appear to use this for complex types also. To
3869 distinguish between floats and complex, g77 (and others?) seem
3870 to use self-subranges for the complexes, and subranges of int for
3873 Also note that for complexes, g77 sets n2 to the size of one of
3874 the member floats, not the whole complex beast. My guess is that
3875 this was to work well with pre-COMPLEX versions of gdb. */
3877 if (n3
== 0 && n2
> 0)
3879 struct type
*float_type
3880 = init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3884 struct type
*complex_type
=
3885 init_type (TYPE_CODE_COMPLEX
, 2 * n2
, 0, NULL
, objfile
);
3886 TYPE_TARGET_TYPE (complex_type
) = float_type
;
3887 return complex_type
;
3893 /* If the upper bound is -1, it must really be an unsigned int. */
3895 else if (n2
== 0 && n3
== -1)
3897 /* It is unsigned int or unsigned long. */
3898 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3899 compatibility hack. */
3900 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3901 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3904 /* Special case: char is defined (Who knows why) as a subrange of
3905 itself with range 0-127. */
3906 else if (self_subrange
&& n2
== 0 && n3
== 127)
3907 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_NOSIGN
, NULL
, objfile
);
3909 /* We used to do this only for subrange of self or subrange of int. */
3912 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3913 "unsigned long", and we already checked for that,
3914 so don't need to test for it here. */
3917 /* n3 actually gives the size. */
3918 return init_type (TYPE_CODE_INT
, -n3
, TYPE_FLAG_UNSIGNED
,
3921 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
3922 unsigned n-byte integer. But do require n to be a power of
3923 two; we don't want 3- and 5-byte integers flying around. */
3929 for (bytes
= 0; (bits
& 0xff) == 0xff; bytes
++)
3932 && ((bytes
- 1) & bytes
) == 0) /* "bytes is a power of two" */
3933 return init_type (TYPE_CODE_INT
, bytes
, TYPE_FLAG_UNSIGNED
, NULL
,
3937 /* I think this is for Convex "long long". Since I don't know whether
3938 Convex sets self_subrange, I also accept that particular size regardless
3939 of self_subrange. */
3940 else if (n3
== 0 && n2
< 0
3942 || n2
== -TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3943 return init_type (TYPE_CODE_INT
, -n2
, 0, NULL
, objfile
);
3944 else if (n2
== -n3
- 1)
3947 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3949 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3950 if (n3
== 0x7fffffff)
3951 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3954 /* We have a real range type on our hands. Allocate space and
3955 return a real pointer. */
3959 index_type
= builtin_type_int
;
3961 index_type
= *dbx_lookup_type (rangenums
);
3962 if (index_type
== NULL
)
3964 /* Does this actually ever happen? Is that why we are worrying
3965 about dealing with it rather than just calling error_type? */
3967 static struct type
*range_type_index
;
3969 complaint (&symfile_complaints
,
3970 "base type %d of range type is not defined", rangenums
[1]);
3971 if (range_type_index
== NULL
)
3973 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3974 0, "range type index type", NULL
);
3975 index_type
= range_type_index
;
3978 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3979 return (result_type
);
3982 /* Read in an argument list. This is a list of types, separated by commas
3983 and terminated with END. Return the list of types read in, or (struct type
3984 **)-1 if there is an error. */
3986 static struct field
*
3987 read_args (char **pp
, int end
, struct objfile
*objfile
, int *nargsp
,
3990 /* FIXME! Remove this arbitrary limit! */
3991 struct type
*types
[1024]; /* allow for fns of 1023 parameters */
3998 /* Invalid argument list: no ','. */
3999 return (struct field
*) -1;
4001 STABS_CONTINUE (pp
, objfile
);
4002 types
[n
++] = read_type (pp
, objfile
);
4004 (*pp
)++; /* get past `end' (the ':' character) */
4006 if (TYPE_CODE (types
[n
- 1]) != TYPE_CODE_VOID
)
4014 rval
= (struct field
*) xmalloc (n
* sizeof (struct field
));
4015 memset (rval
, 0, n
* sizeof (struct field
));
4016 for (i
= 0; i
< n
; i
++)
4017 rval
[i
].type
= types
[i
];
4022 /* Common block handling. */
4024 /* List of symbols declared since the last BCOMM. This list is a tail
4025 of local_symbols. When ECOMM is seen, the symbols on the list
4026 are noted so their proper addresses can be filled in later,
4027 using the common block base address gotten from the assembler
4030 static struct pending
*common_block
;
4031 static int common_block_i
;
4033 /* Name of the current common block. We get it from the BCOMM instead of the
4034 ECOMM to match IBM documentation (even though IBM puts the name both places
4035 like everyone else). */
4036 static char *common_block_name
;
4038 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4039 to remain after this function returns. */
4042 common_block_start (char *name
, struct objfile
*objfile
)
4044 if (common_block_name
!= NULL
)
4046 complaint (&symfile_complaints
,
4047 "Invalid symbol data: common block within common block");
4049 common_block
= local_symbols
;
4050 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
4051 common_block_name
= obsavestring (name
, strlen (name
),
4052 &objfile
->objfile_obstack
);
4055 /* Process a N_ECOMM symbol. */
4058 common_block_end (struct objfile
*objfile
)
4060 /* Symbols declared since the BCOMM are to have the common block
4061 start address added in when we know it. common_block and
4062 common_block_i point to the first symbol after the BCOMM in
4063 the local_symbols list; copy the list and hang it off the
4064 symbol for the common block name for later fixup. */
4067 struct pending
*new = 0;
4068 struct pending
*next
;
4071 if (common_block_name
== NULL
)
4073 complaint (&symfile_complaints
, "ECOMM symbol unmatched by BCOMM");
4077 sym
= (struct symbol
*)
4078 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
4079 memset (sym
, 0, sizeof (struct symbol
));
4080 /* Note: common_block_name already saved on objfile_obstack */
4081 DEPRECATED_SYMBOL_NAME (sym
) = common_block_name
;
4082 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
4084 /* Now we copy all the symbols which have been defined since the BCOMM. */
4086 /* Copy all the struct pendings before common_block. */
4087 for (next
= local_symbols
;
4088 next
!= NULL
&& next
!= common_block
;
4091 for (j
= 0; j
< next
->nsyms
; j
++)
4092 add_symbol_to_list (next
->symbol
[j
], &new);
4095 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4096 NULL, it means copy all the local symbols (which we already did
4099 if (common_block
!= NULL
)
4100 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
4101 add_symbol_to_list (common_block
->symbol
[j
], &new);
4103 SYMBOL_TYPE (sym
) = (struct type
*) new;
4105 /* Should we be putting local_symbols back to what it was?
4108 i
= hashname (DEPRECATED_SYMBOL_NAME (sym
));
4109 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
4110 global_sym_chain
[i
] = sym
;
4111 common_block_name
= NULL
;
4114 /* Add a common block's start address to the offset of each symbol
4115 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4116 the common block name). */
4119 fix_common_block (struct symbol
*sym
, int valu
)
4121 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
4122 for (; next
; next
= next
->next
)
4125 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
4126 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
4132 /* What about types defined as forward references inside of a small lexical
4134 /* Add a type to the list of undefined types to be checked through
4135 once this file has been read in. */
4138 add_undefined_type (struct type
*type
)
4140 if (undef_types_length
== undef_types_allocated
)
4142 undef_types_allocated
*= 2;
4143 undef_types
= (struct type
**)
4144 xrealloc ((char *) undef_types
,
4145 undef_types_allocated
* sizeof (struct type
*));
4147 undef_types
[undef_types_length
++] = type
;
4150 /* Go through each undefined type, see if it's still undefined, and fix it
4151 up if possible. We have two kinds of undefined types:
4153 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4154 Fix: update array length using the element bounds
4155 and the target type's length.
4156 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4157 yet defined at the time a pointer to it was made.
4158 Fix: Do a full lookup on the struct/union tag. */
4160 cleanup_undefined_types (void)
4164 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
4166 switch (TYPE_CODE (*type
))
4169 case TYPE_CODE_STRUCT
:
4170 case TYPE_CODE_UNION
:
4171 case TYPE_CODE_ENUM
:
4173 /* Check if it has been defined since. Need to do this here
4174 as well as in check_typedef to deal with the (legitimate in
4175 C though not C++) case of several types with the same name
4176 in different source files. */
4177 if (TYPE_STUB (*type
))
4179 struct pending
*ppt
;
4181 /* Name of the type, without "struct" or "union" */
4182 char *typename
= TYPE_TAG_NAME (*type
);
4184 if (typename
== NULL
)
4186 complaint (&symfile_complaints
, "need a type name");
4189 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
4191 for (i
= 0; i
< ppt
->nsyms
; i
++)
4193 struct symbol
*sym
= ppt
->symbol
[i
];
4195 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4196 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4197 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
4199 && strcmp (DEPRECATED_SYMBOL_NAME (sym
), typename
) == 0)
4200 replace_type (*type
, SYMBOL_TYPE (sym
));
4209 complaint (&symfile_complaints
,
4210 "forward-referenced types left unresolved, "
4218 undef_types_length
= 0;
4221 /* Scan through all of the global symbols defined in the object file,
4222 assigning values to the debugging symbols that need to be assigned
4223 to. Get these symbols from the minimal symbol table. */
4226 scan_file_globals (struct objfile
*objfile
)
4229 struct minimal_symbol
*msymbol
;
4230 struct symbol
*sym
, *prev
;
4231 struct objfile
*resolve_objfile
;
4233 /* SVR4 based linkers copy referenced global symbols from shared
4234 libraries to the main executable.
4235 If we are scanning the symbols for a shared library, try to resolve
4236 them from the minimal symbols of the main executable first. */
4238 if (symfile_objfile
&& objfile
!= symfile_objfile
)
4239 resolve_objfile
= symfile_objfile
;
4241 resolve_objfile
= objfile
;
4245 /* Avoid expensive loop through all minimal symbols if there are
4246 no unresolved symbols. */
4247 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4249 if (global_sym_chain
[hash
])
4252 if (hash
>= HASHSIZE
)
4255 for (msymbol
= resolve_objfile
->msymbols
;
4256 msymbol
&& DEPRECATED_SYMBOL_NAME (msymbol
) != NULL
;
4261 /* Skip static symbols. */
4262 switch (MSYMBOL_TYPE (msymbol
))
4274 /* Get the hash index and check all the symbols
4275 under that hash index. */
4277 hash
= hashname (DEPRECATED_SYMBOL_NAME (msymbol
));
4279 for (sym
= global_sym_chain
[hash
]; sym
;)
4281 if (DEPRECATED_SYMBOL_NAME (msymbol
)[0] == DEPRECATED_SYMBOL_NAME (sym
)[0] &&
4282 strcmp (DEPRECATED_SYMBOL_NAME (msymbol
) + 1, DEPRECATED_SYMBOL_NAME (sym
) + 1) == 0)
4284 /* Splice this symbol out of the hash chain and
4285 assign the value we have to it. */
4288 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
4292 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
4295 /* Check to see whether we need to fix up a common block. */
4296 /* Note: this code might be executed several times for
4297 the same symbol if there are multiple references. */
4300 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
4302 fix_common_block (sym
,
4303 SYMBOL_VALUE_ADDRESS (msymbol
));
4307 SYMBOL_VALUE_ADDRESS (sym
)
4308 = SYMBOL_VALUE_ADDRESS (msymbol
);
4310 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
4315 sym
= SYMBOL_VALUE_CHAIN (prev
);
4319 sym
= global_sym_chain
[hash
];
4325 sym
= SYMBOL_VALUE_CHAIN (sym
);
4329 if (resolve_objfile
== objfile
)
4331 resolve_objfile
= objfile
;
4334 /* Change the storage class of any remaining unresolved globals to
4335 LOC_UNRESOLVED and remove them from the chain. */
4336 for (hash
= 0; hash
< HASHSIZE
; hash
++)
4338 sym
= global_sym_chain
[hash
];
4342 sym
= SYMBOL_VALUE_CHAIN (sym
);
4344 /* Change the symbol address from the misleading chain value
4346 SYMBOL_VALUE_ADDRESS (prev
) = 0;
4348 /* Complain about unresolved common block symbols. */
4349 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
4350 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
4352 complaint (&symfile_complaints
,
4353 "%s: common block `%s' from global_sym_chain unresolved",
4354 objfile
->name
, DEPRECATED_SYMBOL_NAME (prev
));
4357 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4360 /* Initialize anything that needs initializing when starting to read
4361 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4365 stabsread_init (void)
4369 /* Initialize anything that needs initializing when a completely new
4370 symbol file is specified (not just adding some symbols from another
4371 file, e.g. a shared library). */
4374 stabsread_new_init (void)
4376 /* Empty the hash table of global syms looking for values. */
4377 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4380 /* Initialize anything that needs initializing at the same time as
4381 start_symtab() is called. */
4386 global_stabs
= NULL
; /* AIX COFF */
4387 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4388 n_this_object_header_files
= 1;
4389 type_vector_length
= 0;
4390 type_vector
= (struct type
**) 0;
4392 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4393 common_block_name
= NULL
;
4396 /* Call after end_symtab() */
4403 xfree (type_vector
);
4406 type_vector_length
= 0;
4407 previous_stab_code
= 0;
4411 finish_global_stabs (struct objfile
*objfile
)
4415 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4416 xfree (global_stabs
);
4417 global_stabs
= NULL
;
4421 /* Find the end of the name, delimited by a ':', but don't match
4422 ObjC symbols which look like -[Foo bar::]:bla. */
4424 find_name_end (char *name
)
4427 if (s
[0] == '-' || *s
== '+')
4429 /* Must be an ObjC method symbol. */
4432 error ("invalid symbol name \"%s\"", name
);
4434 s
= strchr (s
, ']');
4437 error ("invalid symbol name \"%s\"", name
);
4439 return strchr (s
, ':');
4443 return strchr (s
, ':');
4447 /* Initializer for this module */
4450 _initialize_stabsread (void)
4452 undef_types_allocated
= 20;
4453 undef_types_length
= 0;
4454 undef_types
= (struct type
**)
4455 xmalloc (undef_types_allocated
* sizeof (struct type
*));