1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
34 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
36 #include "complaints.h"
41 /* Ask stabsread.h to define the vars it normally declares `extern'. */
43 #include "stabsread.h" /* Our own declarations */
46 /* The routines that read and process a complete stabs for a C struct or
47 C++ class pass lists of data member fields and lists of member function
48 fields in an instance of a field_info structure, as defined below.
49 This is part of some reorganization of low level C++ support and is
50 expected to eventually go away... (FIXME) */
56 struct nextfield
*next
;
60 struct next_fnfieldlist
62 struct next_fnfieldlist
*next
;
63 struct fn_fieldlist fn_fieldlist
;
68 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
70 static long read_huge_number
PARAMS ((char **, int, int *));
72 static struct type
*error_type
PARAMS ((char **));
75 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
79 fix_common_block
PARAMS ((struct symbol
*, int));
82 read_type_number
PARAMS ((char **, int *));
85 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
88 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
91 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
94 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
97 rs6000_builtin_type
PARAMS ((int));
100 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
104 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
108 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
112 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
116 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
119 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
123 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
126 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
128 static struct type
**
129 read_args
PARAMS ((char **, int, struct objfile
*));
132 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
135 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
136 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
138 /* Define this as 1 if a pcc declaration of a char or short argument
139 gives the correct address. Otherwise assume pcc gives the
140 address of the corresponding int, which is not the same on a
141 big-endian machine. */
143 #ifndef BELIEVE_PCC_PROMOTION
144 #define BELIEVE_PCC_PROMOTION 0
148 /* I think this can go away, all current uses have been removed.
149 GCC emits a few crazy types which can only be distinguished by the
150 name (complex, long long on some machines), but I'd say fix GCC. */
152 /* During some calls to read_type (and thus to read_range_type), this
153 contains the name of the type being defined. Range types are only
154 used in C as basic types. We use the name to distinguish the otherwise
155 identical basic types "int" and "long" and their unsigned versions.
156 FIXME, this should disappear with better type management. */
158 static char *long_kludge_name
;
162 struct complaint dbx_class_complaint
=
164 "encountered DBX-style class variable debugging information.\n\
165 You seem to have compiled your program with \
166 \"g++ -g0\" instead of \"g++ -g\".\n\
167 Therefore GDB will not know about your class variables", 0, 0
171 struct complaint invalid_cpp_abbrev_complaint
=
172 {"invalid C++ abbreviation `%s'", 0, 0};
174 struct complaint invalid_cpp_type_complaint
=
175 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
177 struct complaint member_fn_complaint
=
178 {"member function type missing, got '%c'", 0, 0};
180 struct complaint const_vol_complaint
=
181 {"const/volatile indicator missing, got '%c'", 0, 0};
183 struct complaint error_type_complaint
=
184 {"debug info mismatch between compiler and debugger", 0, 0};
186 struct complaint invalid_member_complaint
=
187 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
189 struct complaint range_type_base_complaint
=
190 {"base type %d of range type is not defined", 0, 0};
192 struct complaint reg_value_complaint
=
193 {"register number too large in symbol %s", 0, 0};
195 struct complaint vtbl_notfound_complaint
=
196 {"virtual function table pointer not found when defining class `%s'", 0, 0};
198 struct complaint unrecognized_cplus_name_complaint
=
199 {"Unknown C++ symbol name `%s'", 0, 0};
201 struct complaint rs6000_builtin_complaint
=
202 {"Unknown builtin type %d", 0, 0};
204 struct complaint stabs_general_complaint
=
207 /* Make a list of forward references which haven't been defined. */
209 static struct type
**undef_types
;
210 static int undef_types_allocated
;
211 static int undef_types_length
;
213 /* Check for and handle cretinous stabs symbol name continuation! */
214 #define STABS_CONTINUE(pp) \
216 if (**(pp) == '\\') *(pp) = next_symbol_text (); \
220 /* Look up a dbx type-number pair. Return the address of the slot
221 where the type for that number-pair is stored.
222 The number-pair is in TYPENUMS.
224 This can be used for finding the type associated with that pair
225 or for associating a new type with the pair. */
228 dbx_lookup_type (typenums
)
231 register int filenum
= typenums
[0];
232 register int index
= typenums
[1];
234 register int real_filenum
;
235 register struct header_file
*f
;
238 if (filenum
== -1) /* -1,-1 is for temporary types. */
241 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
243 static struct complaint msg
= {"\
244 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
246 complain (&msg
, filenum
, index
, symnum
);
254 /* Caller wants address of address of type. We think
255 that negative (rs6k builtin) types will never appear as
256 "lvalues", (nor should they), so we stuff the real type
257 pointer into a temp, and return its address. If referenced,
258 this will do the right thing. */
259 static struct type
*temp_type
;
261 temp_type
= rs6000_builtin_type(index
);
265 /* Type is defined outside of header files.
266 Find it in this object file's type vector. */
267 if (index
>= type_vector_length
)
269 old_len
= type_vector_length
;
272 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
273 type_vector
= (struct type
**)
274 malloc (type_vector_length
* sizeof (struct type
*));
276 while (index
>= type_vector_length
)
278 type_vector_length
*= 2;
280 type_vector
= (struct type
**)
281 xrealloc ((char *) type_vector
,
282 (type_vector_length
* sizeof (struct type
*)));
283 memset (&type_vector
[old_len
], 0,
284 (type_vector_length
- old_len
) * sizeof (struct type
*));
286 return (&type_vector
[index
]);
290 real_filenum
= this_object_header_files
[filenum
];
292 if (real_filenum
>= n_header_files
)
294 struct type
*temp_type
;
295 struct type
**temp_type_p
;
297 warning ("GDB internal error: bad real_filenum");
300 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
301 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
302 *temp_type_p
= temp_type
;
306 f
= &header_files
[real_filenum
];
308 f_orig_length
= f
->length
;
309 if (index
>= f_orig_length
)
311 while (index
>= f
->length
)
315 f
->vector
= (struct type
**)
316 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
317 memset (&f
->vector
[f_orig_length
], 0,
318 (f
->length
- f_orig_length
) * sizeof (struct type
*));
320 return (&f
->vector
[index
]);
324 /* Make sure there is a type allocated for type numbers TYPENUMS
325 and return the type object.
326 This can create an empty (zeroed) type object.
327 TYPENUMS may be (-1, -1) to return a new type object that is not
328 put into the type vector, and so may not be referred to by number. */
331 dbx_alloc_type (typenums
, objfile
)
333 struct objfile
*objfile
;
335 register struct type
**type_addr
;
337 if (typenums
[0] == -1)
339 return (alloc_type (objfile
));
342 type_addr
= dbx_lookup_type (typenums
);
344 /* If we are referring to a type not known at all yet,
345 allocate an empty type for it.
346 We will fill it in later if we find out how. */
349 *type_addr
= alloc_type (objfile
);
355 /* for all the stabs in a given stab vector, build appropriate types
356 and fix their symbols in given symbol vector. */
359 patch_block_stabs (symbols
, stabs
, objfile
)
360 struct pending
*symbols
;
361 struct pending_stabs
*stabs
;
362 struct objfile
*objfile
;
372 /* for all the stab entries, find their corresponding symbols and
373 patch their types! */
375 for (ii
= 0; ii
< stabs
->count
; ++ii
)
377 name
= stabs
->stab
[ii
];
378 pp
= (char*) strchr (name
, ':');
379 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
382 /* On xcoff, if a global is defined and never referenced,
383 ld will remove it from the executable. There is then
384 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
385 sym
= (struct symbol
*)
386 obstack_alloc (&objfile
->symbol_obstack
,
387 sizeof (struct symbol
));
389 memset (sym
, 0, sizeof (struct symbol
));
390 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
391 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
393 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
395 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
397 /* I don't think the linker does this with functions,
398 so as far as I know this is never executed.
399 But it doesn't hurt to check. */
401 lookup_function_type (read_type (&pp
, objfile
));
405 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
407 add_symbol_to_list (sym
, &global_symbols
);
412 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
415 lookup_function_type (read_type (&pp
, objfile
));
419 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
427 /* Read a number by which a type is referred to in dbx data,
428 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
429 Just a single number N is equivalent to (0,N).
430 Return the two numbers by storing them in the vector TYPENUMS.
431 TYPENUMS will then be used as an argument to dbx_lookup_type.
433 Returns 0 for success, -1 for error. */
436 read_type_number (pp
, typenums
)
438 register int *typenums
;
444 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
445 if (nbits
!= 0) return -1;
446 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
447 if (nbits
!= 0) return -1;
452 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
453 if (nbits
!= 0) return -1;
459 /* To handle GNU C++ typename abbreviation, we need to be able to
460 fill in a type's name as soon as space for that type is allocated.
461 `type_synonym_name' is the name of the type being allocated.
462 It is cleared as soon as it is used (lest all allocated types
465 static char *type_synonym_name
;
469 define_symbol (valu
, string
, desc
, type
, objfile
)
474 struct objfile
*objfile
;
476 register struct symbol
*sym
;
477 char *p
= (char *) strchr (string
, ':');
482 /* We would like to eliminate nameless symbols, but keep their types.
483 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
484 to type 2, but, should not create a symbol to address that type. Since
485 the symbol will be nameless, there is no way any user can refer to it. */
489 /* Ignore syms with empty names. */
493 /* Ignore old-style symbols from cc -go */
497 /* If a nameless stab entry, all we need is the type, not the symbol.
498 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
499 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
501 sym
= (struct symbol
*)
502 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
503 memset (sym
, 0, sizeof (struct symbol
));
505 if (processing_gcc_compilation
)
507 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
508 number of bytes occupied by a type or object, which we ignore. */
509 SYMBOL_LINE(sym
) = desc
;
513 SYMBOL_LINE(sym
) = 0; /* unknown */
516 if (string
[0] == CPLUS_MARKER
)
518 /* Special GNU C++ names. */
522 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
523 &objfile
-> symbol_obstack
);
526 case 'v': /* $vtbl_ptr_type */
527 /* Was: SYMBOL_NAME (sym) = "vptr"; */
531 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
532 &objfile
-> symbol_obstack
);
536 /* This was an anonymous type that was never fixed up. */
540 complain (&unrecognized_cplus_name_complaint
, string
);
541 goto normal
; /* Do *something* with it */
547 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
548 SYMBOL_NAME (sym
) = (char *)
549 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
550 /* Open-coded memcpy--saves function call time. */
551 /* FIXME: Does it really? Try replacing with simple strcpy and
552 try it on an executable with a large symbol table. */
553 /* FIXME: considering that gcc can open code memcpy anyway, I
554 doubt it. xoxorich. */
556 register char *p1
= string
;
557 register char *p2
= SYMBOL_NAME (sym
);
565 /* If this symbol is from a C++ compilation, then attempt to cache the
566 demangled form for future reference. This is a typical time versus
567 space tradeoff, that was decided in favor of time because it sped up
568 C++ symbol lookups by a factor of about 20. */
570 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
574 /* Determine the type of name being defined. */
576 /* Getting GDB to correctly skip the symbol on an undefined symbol
577 descriptor and not ever dump core is a very dodgy proposition if
578 we do things this way. I say the acorn RISC machine can just
579 fix their compiler. */
580 /* The Acorn RISC machine's compiler can put out locals that don't
581 start with "234=" or "(3,4)=", so assume anything other than the
582 deftypes we know how to handle is a local. */
583 if (!strchr ("cfFGpPrStTvVXCR", *p
))
585 if (isdigit (*p
) || *p
== '(' || *p
== '-')
594 /* c is a special case, not followed by a type-number.
595 SYMBOL:c=iVALUE for an integer constant symbol.
596 SYMBOL:c=rVALUE for a floating constant symbol.
597 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
598 e.g. "b:c=e6,0" for "const b = blob1"
599 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
602 SYMBOL_CLASS (sym
) = LOC_CONST
;
603 SYMBOL_TYPE (sym
) = error_type (&p
);
604 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
605 add_symbol_to_list (sym
, &file_symbols
);
616 /* FIXME: lookup_fundamental_type is a hack. We should be
617 creating a type especially for the type of float constants.
618 Problem is, what type should it be? We currently have to
619 read this in host floating point format, but what type
620 represents a host format "double"?
622 Also, what should the name of this type be? Should we
623 be using 'S' constants (see stabs.texinfo) instead? */
625 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
628 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (double));
629 memcpy (dbl_valu
, &d
, sizeof (double));
630 /* Put it in target byte order, but it's still in host
631 floating point format. */
632 SWAP_TARGET_AND_HOST (dbl_valu
, sizeof (double));
633 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
634 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
639 /* Defining integer constants this way is kind of silly,
640 since 'e' constants allows the compiler to give not
641 only the value, but the type as well. C has at least
642 int, long, unsigned int, and long long as constant
643 types; other languages probably should have at least
644 unsigned as well as signed constants. */
646 /* We just need one int constant type for all objfiles.
647 It doesn't depend on languages or anything (arguably its
648 name should be a language-specific name for a type of
649 that size, but I'm inclined to say that if the compiler
650 wants a nice name for the type, it can use 'e'). */
651 static struct type
*int_const_type
;
653 /* Yes, this is as long as a *host* int. That is because we
655 if (int_const_type
== NULL
)
657 init_type (TYPE_CODE_INT
,
658 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
660 (struct objfile
*)NULL
);
661 SYMBOL_TYPE (sym
) = int_const_type
;
662 SYMBOL_VALUE (sym
) = atoi (p
);
663 SYMBOL_CLASS (sym
) = LOC_CONST
;
667 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
668 can be represented as integral.
669 e.g. "b:c=e6,0" for "const b = blob1"
670 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
672 SYMBOL_CLASS (sym
) = LOC_CONST
;
673 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
677 SYMBOL_TYPE (sym
) = error_type (&p
);
682 /* If the value is too big to fit in an int (perhaps because
683 it is unsigned), or something like that, we silently get
684 a bogus value. The type and everything else about it is
685 correct. Ideally, we should be using whatever we have
686 available for parsing unsigned and long long values,
688 SYMBOL_VALUE (sym
) = atoi (p
);
693 SYMBOL_CLASS (sym
) = LOC_CONST
;
694 SYMBOL_TYPE (sym
) = error_type (&p
);
697 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
698 add_symbol_to_list (sym
, &file_symbols
);
702 /* The name of a caught exception. */
703 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
704 SYMBOL_CLASS (sym
) = LOC_LABEL
;
705 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
706 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
707 add_symbol_to_list (sym
, &local_symbols
);
711 /* A static function definition. */
712 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
713 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
714 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
715 add_symbol_to_list (sym
, &file_symbols
);
716 /* fall into process_function_types. */
718 process_function_types
:
719 /* Function result types are described as the result type in stabs.
720 We need to convert this to the function-returning-type-X type
721 in GDB. E.g. "int" is converted to "function returning int". */
722 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
725 /* This code doesn't work -- it needs to realloc and can't. */
726 /* Attempt to set up to record a function prototype... */
727 struct type
*new = alloc_type (objfile
);
729 /* Generate a template for the type of this function. The
730 types of the arguments will be added as we read the symbol
732 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
733 SYMBOL_TYPE(sym
) = new;
734 TYPE_OBJFILE (new) = objfile
;
735 in_function_type
= new;
737 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
740 /* fall into process_prototype_types */
742 process_prototype_types
:
743 /* Sun acc puts declared types of arguments here. We don't care
744 about their actual types (FIXME -- we should remember the whole
745 function prototype), but the list may define some new types
746 that we have to remember, so we must scan it now. */
749 read_type (&p
, objfile
);
754 /* A global function definition. */
755 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
756 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
757 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
758 add_symbol_to_list (sym
, &global_symbols
);
759 goto process_function_types
;
762 /* For a class G (global) symbol, it appears that the
763 value is not correct. It is necessary to search for the
764 corresponding linker definition to find the value.
765 These definitions appear at the end of the namelist. */
766 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
767 i
= hashname (SYMBOL_NAME (sym
));
768 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
769 global_sym_chain
[i
] = sym
;
770 SYMBOL_CLASS (sym
) = LOC_STATIC
;
771 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
772 add_symbol_to_list (sym
, &global_symbols
);
775 /* This case is faked by a conditional above,
776 when there is no code letter in the dbx data.
777 Dbx data never actually contains 'l'. */
779 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
780 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
781 SYMBOL_VALUE (sym
) = valu
;
782 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
783 add_symbol_to_list (sym
, &local_symbols
);
788 /* pF is a two-letter code that means a function parameter in Fortran.
789 The type-number specifies the type of the return value.
790 Translate it into a pointer-to-function type. */
794 = lookup_pointer_type
795 (lookup_function_type (read_type (&p
, objfile
)));
798 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
800 /* Normally this is a parameter, a LOC_ARG. On the i960, it
801 can also be a LOC_LOCAL_ARG depending on symbol type. */
802 #ifndef DBX_PARM_SYMBOL_CLASS
803 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
806 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
807 SYMBOL_VALUE (sym
) = valu
;
808 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
810 /* This doesn't work yet. */
811 add_param_to_type (&in_function_type
, sym
);
813 add_symbol_to_list (sym
, &local_symbols
);
815 /* If it's gcc-compiled, if it says `short', believe it. */
816 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
819 #if !BELIEVE_PCC_PROMOTION
821 /* This is the signed type which arguments get promoted to. */
822 static struct type
*pcc_promotion_type
;
823 /* This is the unsigned type which arguments get promoted to. */
824 static struct type
*pcc_unsigned_promotion_type
;
826 /* Call it "int" because this is mainly C lossage. */
827 if (pcc_promotion_type
== NULL
)
829 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
832 if (pcc_unsigned_promotion_type
== NULL
)
833 pcc_unsigned_promotion_type
=
834 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
835 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
837 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
838 /* This macro is defined on machines (e.g. sparc) where
839 we should believe the type of a PCC 'short' argument,
840 but shouldn't believe the address (the address is
841 the address of the corresponding int). Note that
842 this is only different from the BELIEVE_PCC_PROMOTION
843 case on big-endian machines.
845 My guess is that this correction, as opposed to changing
846 the parameter to an 'int' (as done below, for PCC
847 on most machines), is the right thing to do
848 on all machines, but I don't want to risk breaking
849 something that already works. On most PCC machines,
850 the sparc problem doesn't come up because the calling
851 function has to zero the top bytes (not knowing whether
852 the called function wants an int or a short), so there
853 is no practical difference between an int and a short
854 (except perhaps what happens when the GDB user types
855 "print short_arg = 0x10000;").
857 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
858 actually produces the correct address (we don't need to fix it
859 up). I made this code adapt so that it will offset the symbol
860 if it was pointing at an int-aligned location and not
861 otherwise. This way you can use the same gdb for 4.0.x and
864 If the parameter is shorter than an int, and is integral
865 (e.g. char, short, or unsigned equivalent), and is claimed to
866 be passed on an integer boundary, don't believe it! Offset the
867 parameter's address to the tail-end of that integer. */
869 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
870 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
871 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
873 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
874 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
878 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
880 /* If PCC says a parameter is a short or a char,
881 it is really an int. */
882 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
883 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
886 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
887 ? pcc_unsigned_promotion_type
888 : pcc_promotion_type
;
892 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
894 #endif /* !BELIEVE_PCC_PROMOTION. */
897 /* acc seems to use P to delare the prototypes of functions that
898 are referenced by this file. gdb is not prepared to deal
899 with this extra information. FIXME, it ought to. */
902 read_type (&p
, objfile
);
903 goto process_prototype_types
;
908 /* Parameter which is in a register. */
909 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
910 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
911 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
912 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
914 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
915 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
917 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
918 add_symbol_to_list (sym
, &local_symbols
);
922 /* Register variable (either global or local). */
923 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
924 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
925 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
926 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
928 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
929 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
931 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
934 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
935 name to represent an argument passed in a register.
936 GCC uses 'P' for the same case. So if we find such a symbol pair
937 we combine it into one 'P' symbol.
938 Note that this code illegally combines
939 main(argc) int argc; { register int argc = 1; }
940 but this case is considered pathological and causes a warning
941 from a decent compiler. */
943 && local_symbols
->nsyms
> 0)
945 struct symbol
*prev_sym
;
946 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
947 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
948 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
950 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
951 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
956 add_symbol_to_list (sym
, &local_symbols
);
959 add_symbol_to_list (sym
, &file_symbols
);
963 /* Static symbol at top level of file */
964 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
965 SYMBOL_CLASS (sym
) = LOC_STATIC
;
966 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
967 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
968 add_symbol_to_list (sym
, &file_symbols
);
973 /* See comment where long_kludge_name is declared. */
974 /* Here we save the name of the symbol for read_range_type, which
975 ends up reading in the basic types. In stabs, unfortunately there
976 is no distinction between "int" and "long" types except their
977 names. Until we work out a saner type policy (eliminating most
978 builtin types and using the names specified in the files), we
979 save away the name so that far away from here in read_range_type,
980 we can examine it to decide between "int" and "long". FIXME. */
981 long_kludge_name
= SYMBOL_NAME (sym
);
983 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
985 /* For a nameless type, we don't want a create a symbol, thus we
986 did not use `sym'. Return without further processing. */
987 if (nameless
) return NULL
;
989 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
990 SYMBOL_VALUE (sym
) = valu
;
991 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
992 /* C++ vagaries: we may have a type which is derived from
993 a base type which did not have its name defined when the
994 derived class was output. We fill in the derived class's
995 base part member's name here in that case. */
996 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
997 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
998 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
999 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1002 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1003 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1004 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1005 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1008 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1010 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1011 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1013 /* If we are giving a name to a type such as "pointer to
1014 foo" or "function returning foo", we better not set
1015 the TYPE_NAME. If the program contains "typedef char
1016 *caddr_t;", we don't want all variables of type char
1017 * to print as caddr_t. This is not just a
1018 consequence of GDB's type management; PCC and GCC (at
1019 least through version 2.4) both output variables of
1020 either type char * or caddr_t with the type number
1021 defined in the 't' symbol for caddr_t. If a future
1022 compiler cleans this up it GDB is not ready for it
1023 yet, but if it becomes ready we somehow need to
1024 disable this check (without breaking the PCC/GCC2.4
1029 Fortunately, this check seems not to be necessary
1030 for anything except pointers or functions. */
1033 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1036 add_symbol_to_list (sym
, &file_symbols
);
1040 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1041 by 't' which means we are typedef'ing it as well. */
1042 synonym
= *p
== 't';
1047 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1048 strlen (SYMBOL_NAME (sym
)),
1049 &objfile
-> symbol_obstack
);
1052 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1054 /* For a nameless type, we don't want a create a symbol, thus we
1055 did not use `sym'. Return without further processing. */
1056 if (nameless
) return NULL
;
1058 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1059 SYMBOL_VALUE (sym
) = valu
;
1060 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1061 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1062 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1063 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1064 add_symbol_to_list (sym
, &file_symbols
);
1068 /* Clone the sym and then modify it. */
1069 register struct symbol
*typedef_sym
= (struct symbol
*)
1070 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1071 *typedef_sym
= *sym
;
1072 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1073 SYMBOL_VALUE (typedef_sym
) = valu
;
1074 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1075 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1076 TYPE_NAME (SYMBOL_TYPE (sym
))
1077 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1078 add_symbol_to_list (typedef_sym
, &file_symbols
);
1083 /* Static symbol of local scope */
1084 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1085 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1086 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1087 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1088 add_symbol_to_list (sym
, &local_symbols
);
1092 /* Reference parameter */
1093 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1094 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1095 SYMBOL_VALUE (sym
) = valu
;
1096 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1097 add_symbol_to_list (sym
, &local_symbols
);
1101 /* This is used by Sun FORTRAN for "function result value".
1102 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1103 that Pascal uses it too, but when I tried it Pascal used
1104 "x:3" (local symbol) instead. */
1105 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1106 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1107 SYMBOL_VALUE (sym
) = valu
;
1108 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1109 add_symbol_to_list (sym
, &local_symbols
);
1113 SYMBOL_TYPE (sym
) = error_type (&p
);
1114 SYMBOL_CLASS (sym
) = LOC_CONST
;
1115 SYMBOL_VALUE (sym
) = 0;
1116 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1117 add_symbol_to_list (sym
, &file_symbols
);
1121 /* When passing structures to a function, some systems sometimes pass
1122 the address in a register, not the structure itself.
1124 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1125 to LOC_REGPARM_ADDR for structures and unions. */
1127 #if !defined (REG_STRUCT_HAS_ADDR)
1128 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
1131 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1132 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1133 && ( (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1134 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1135 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1141 /* Skip rest of this symbol and return an error type.
1143 General notes on error recovery: error_type always skips to the
1144 end of the symbol (modulo cretinous dbx symbol name continuation).
1145 Thus code like this:
1147 if (*(*pp)++ != ';')
1148 return error_type (pp);
1150 is wrong because if *pp starts out pointing at '\0' (typically as the
1151 result of an earlier error), it will be incremented to point to the
1152 start of the next symbol, which might produce strange results, at least
1153 if you run off the end of the string table. Instead use
1156 return error_type (pp);
1162 foo = error_type (pp);
1166 And in case it isn't obvious, the point of all this hair is so the compiler
1167 can define new types and new syntaxes, and old versions of the
1168 debugger will be able to read the new symbol tables. */
1170 static struct type
*
1174 complain (&error_type_complaint
);
1177 /* Skip to end of symbol. */
1178 while (**pp
!= '\0')
1183 /* Check for and handle cretinous dbx symbol name continuation! */
1184 if ((*pp
)[-1] == '\\')
1186 *pp
= next_symbol_text ();
1193 return (builtin_type_error
);
1197 /* Read type information or a type definition; return the type. Even
1198 though this routine accepts either type information or a type
1199 definition, the distinction is relevant--some parts of stabsread.c
1200 assume that type information starts with a digit, '-', or '(' in
1201 deciding whether to call read_type. */
1204 read_type (pp
, objfile
)
1206 struct objfile
*objfile
;
1208 register struct type
*type
= 0;
1212 char type_descriptor
;
1214 /* Read type number if present. The type number may be omitted.
1215 for instance in a two-dimensional array declared with type
1216 "ar1;1;10;ar1;1;10;4". */
1217 if ((**pp
>= '0' && **pp
<= '9')
1220 if (read_type_number (pp
, typenums
) != 0)
1221 return error_type (pp
);
1223 /* Type is not being defined here. Either it already exists,
1224 or this is a forward reference to it. dbx_alloc_type handles
1227 return dbx_alloc_type (typenums
, objfile
);
1229 /* Type is being defined here. */
1236 /* It might be a type attribute or a member type. */
1237 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1242 /* Type attributes; skip to the semicolon. */
1243 while (*p
!= ';' && *p
!= '\0')
1247 return error_type (pp
);
1249 /* Skip the semicolon. */
1253 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1258 /* 'typenums=' not present, type is anonymous. Read and return
1259 the definition, but don't put it in the type vector. */
1260 typenums
[0] = typenums
[1] = -1;
1264 type_descriptor
= (*pp
)[-1];
1265 switch (type_descriptor
)
1269 enum type_code code
;
1271 /* Used to index through file_symbols. */
1272 struct pending
*ppt
;
1275 /* Name including "struct", etc. */
1281 /* Set the type code according to the following letter. */
1285 code
= TYPE_CODE_STRUCT
;
1288 code
= TYPE_CODE_UNION
;
1291 code
= TYPE_CODE_ENUM
;
1294 return error_type (pp
);
1297 to
= type_name
= (char *)
1298 obstack_alloc (&objfile
-> type_obstack
,
1299 (((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1301 /* Copy the name. */
1303 while ((*to
++ = *from
++) != ':')
1307 /* Set the pointer ahead of the name which we just read. */
1311 /* Now check to see whether the type has already been declared. */
1312 /* This is necessary at least in the case where the
1313 program says something like
1315 The compiler puts out a cross-reference; we better find
1316 set the length of the structure correctly so we can
1317 set the length of the array. */
1318 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1319 for (i
= 0; i
< ppt
->nsyms
; i
++)
1321 struct symbol
*sym
= ppt
->symbol
[i
];
1323 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1324 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1325 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1326 && STREQ (SYMBOL_NAME (sym
), type_name
))
1328 obstack_free (&objfile
-> type_obstack
, type_name
);
1329 type
= SYMBOL_TYPE (sym
);
1334 /* Didn't find the type to which this refers, so we must
1335 be dealing with a forward reference. Allocate a type
1336 structure for it, and keep track of it so we can
1337 fill in the rest of the fields when we get the full
1339 type
= dbx_alloc_type (typenums
, objfile
);
1340 TYPE_CODE (type
) = code
;
1341 TYPE_TAG_NAME (type
) = type_name
;
1342 INIT_CPLUS_SPECIFIC(type
);
1343 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1345 add_undefined_type (type
);
1349 case '-': /* RS/6000 built-in type */
1362 /* The type is being defined to another type. When we support
1363 Ada (and arguably for C, so "whatis foo" can give "size_t",
1364 "wchar_t", or whatever it was declared as) we'll need to
1365 allocate a distinct type here rather than returning the
1366 existing one. GCC is currently (deliberately) incapable of
1367 putting out the debugging information to do that, however. */
1370 if (read_type_number (pp
, xtypenums
) != 0)
1371 return error_type (pp
);
1372 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1373 /* It's being defined as itself. That means it is "void". */
1374 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1376 type
= *dbx_lookup_type (xtypenums
);
1377 if (typenums
[0] != -1)
1378 *dbx_lookup_type (typenums
) = type
;
1379 /* This can happen if we had '-' followed by a garbage character,
1382 return error_type (pp
);
1385 /* In the following types, we must be sure to overwrite any existing
1386 type that the typenums refer to, rather than allocating a new one
1387 and making the typenums point to the new one. This is because there
1388 may already be pointers to the existing type (if it had been
1389 forward-referenced), and we must change it to a pointer, function,
1390 reference, or whatever, *in-place*. */
1393 type1
= read_type (pp
, objfile
);
1394 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1397 case '&': /* Reference to another type */
1398 type1
= read_type (pp
, objfile
);
1399 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1402 case 'f': /* Function returning another type */
1403 type1
= read_type (pp
, objfile
);
1404 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1407 case 'k': /* Const qualifier on some type (Sun) */
1408 type
= read_type (pp
, objfile
);
1409 /* FIXME! For now, we ignore const and volatile qualifiers. */
1412 case 'B': /* Volatile qual on some type (Sun) */
1413 type
= read_type (pp
, objfile
);
1414 /* FIXME! For now, we ignore const and volatile qualifiers. */
1417 /* FIXME -- we should be doing smash_to_XXX types here. */
1418 case '@': /* Member (class & variable) type */
1420 struct type
*domain
= read_type (pp
, objfile
);
1421 struct type
*memtype
;
1424 /* Invalid member type data format. */
1425 return error_type (pp
);
1428 memtype
= read_type (pp
, objfile
);
1429 type
= dbx_alloc_type (typenums
, objfile
);
1430 smash_to_member_type (type
, domain
, memtype
);
1434 case '#': /* Method (class & fn) type */
1435 if ((*pp
)[0] == '#')
1437 /* We'll get the parameter types from the name. */
1438 struct type
*return_type
;
1441 return_type
= read_type (pp
, objfile
);
1442 if (*(*pp
)++ != ';')
1443 complain (&invalid_member_complaint
, symnum
);
1444 type
= allocate_stub_method (return_type
);
1445 if (typenums
[0] != -1)
1446 *dbx_lookup_type (typenums
) = type
;
1450 struct type
*domain
= read_type (pp
, objfile
);
1451 struct type
*return_type
;
1455 /* Invalid member type data format. */
1456 return error_type (pp
);
1460 return_type
= read_type (pp
, objfile
);
1461 args
= read_args (pp
, ';', objfile
);
1462 type
= dbx_alloc_type (typenums
, objfile
);
1463 smash_to_method_type (type
, domain
, return_type
, args
);
1467 case 'r': /* Range type */
1468 type
= read_range_type (pp
, typenums
, objfile
);
1469 if (typenums
[0] != -1)
1470 *dbx_lookup_type (typenums
) = type
;
1473 case 'b': /* Sun ACC builtin int type */
1474 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1475 if (typenums
[0] != -1)
1476 *dbx_lookup_type (typenums
) = type
;
1479 case 'R': /* Sun ACC builtin float type */
1480 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1481 if (typenums
[0] != -1)
1482 *dbx_lookup_type (typenums
) = type
;
1485 case 'e': /* Enumeration type */
1486 type
= dbx_alloc_type (typenums
, objfile
);
1487 type
= read_enum_type (pp
, type
, objfile
);
1488 if (typenums
[0] != -1)
1489 *dbx_lookup_type (typenums
) = type
;
1492 case 's': /* Struct type */
1493 case 'u': /* Union type */
1494 type
= dbx_alloc_type (typenums
, objfile
);
1495 if (!TYPE_NAME (type
))
1497 TYPE_NAME (type
) = type_synonym_name
;
1499 type_synonym_name
= NULL
;
1500 switch (type_descriptor
)
1503 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1506 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1509 type
= read_struct_type (pp
, type
, objfile
);
1512 case 'a': /* Array type */
1514 return error_type (pp
);
1517 type
= dbx_alloc_type (typenums
, objfile
);
1518 type
= read_array_type (pp
, type
, objfile
);
1522 --*pp
; /* Go back to the symbol in error */
1523 /* Particularly important if it was \0! */
1524 return error_type (pp
);
1529 warning ("GDB internal error, type is NULL in stabsread.c\n");
1530 return error_type (pp
);
1536 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1537 Return the proper type node for a given builtin type number. */
1539 static struct type
*
1540 rs6000_builtin_type (typenum
)
1543 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1544 #define NUMBER_RECOGNIZED 30
1545 /* This includes an empty slot for type number -0. */
1546 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1547 struct type
*rettype
= NULL
;
1549 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1551 complain (&rs6000_builtin_complaint
, typenum
);
1552 return builtin_type_error
;
1554 if (negative_types
[-typenum
] != NULL
)
1555 return negative_types
[-typenum
];
1557 #if TARGET_CHAR_BIT != 8
1558 #error This code wrong for TARGET_CHAR_BIT not 8
1559 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1560 that if that ever becomes not true, the correct fix will be to
1561 make the size in the struct type to be in bits, not in units of
1568 /* The size of this and all the other types are fixed, defined
1569 by the debugging format. If there is a type called "int" which
1570 is other than 32 bits, then it should use a new negative type
1571 number (or avoid negative type numbers for that case).
1572 See stabs.texinfo. */
1573 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1576 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1579 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1582 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1585 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1586 "unsigned char", NULL
);
1589 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1592 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1593 "unsigned short", NULL
);
1596 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1597 "unsigned int", NULL
);
1600 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1603 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1604 "unsigned long", NULL
);
1607 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1610 /* IEEE single precision (32 bit). */
1611 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1614 /* IEEE double precision (64 bit). */
1615 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1618 /* This is an IEEE double on the RS/6000, and different machines with
1619 different sizes for "long double" should use different negative
1620 type numbers. See stabs.texinfo. */
1621 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1624 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1627 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1630 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1633 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1636 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1639 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1643 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1647 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1651 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1655 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1659 /* Complex type consisting of two IEEE single precision values. */
1660 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1663 /* Complex type consisting of two IEEE double precision values. */
1664 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1667 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1670 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1673 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1676 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1679 negative_types
[-typenum
] = rettype
;
1683 /* This page contains subroutines of read_type. */
1685 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1686 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1687 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1689 /* Read member function stabs info for C++ classes. The form of each member
1692 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1694 An example with two member functions is:
1696 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1698 For the case of overloaded operators, the format is op$::*.funcs, where
1699 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1700 name (such as `+=') and `.' marks the end of the operator name.
1702 Returns 1 for success, 0 for failure. */
1705 read_member_functions (fip
, pp
, type
, objfile
)
1706 struct field_info
*fip
;
1709 struct objfile
*objfile
;
1713 /* Total number of member functions defined in this class. If the class
1714 defines two `f' functions, and one `g' function, then this will have
1716 int total_length
= 0;
1720 struct next_fnfield
*next
;
1721 struct fn_field fn_field
;
1723 struct type
*look_ahead_type
;
1724 struct next_fnfieldlist
*new_fnlist
;
1725 struct next_fnfield
*new_sublist
;
1729 /* Process each list until we find something that is not a member function
1730 or find the end of the functions. */
1734 /* We should be positioned at the start of the function name.
1735 Scan forward to find the first ':' and if it is not the
1736 first of a "::" delimiter, then this is not a member function. */
1748 look_ahead_type
= NULL
;
1751 new_fnlist
= (struct next_fnfieldlist
*)
1752 xmalloc (sizeof (struct next_fnfieldlist
));
1753 make_cleanup (free
, new_fnlist
);
1754 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1756 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1758 /* This is a completely wierd case. In order to stuff in the
1759 names that might contain colons (the usual name delimiter),
1760 Mike Tiemann defined a different name format which is
1761 signalled if the identifier is "op$". In that case, the
1762 format is "op$::XXXX." where XXXX is the name. This is
1763 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1764 /* This lets the user type "break operator+".
1765 We could just put in "+" as the name, but that wouldn't
1767 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1768 char *o
= opname
+ 3;
1770 /* Skip past '::'. */
1773 STABS_CONTINUE (pp
);
1779 main_fn_name
= savestring (opname
, o
- opname
);
1785 main_fn_name
= savestring (*pp
, p
- *pp
);
1786 /* Skip past '::'. */
1789 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1794 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1795 make_cleanup (free
, new_sublist
);
1796 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1798 /* Check for and handle cretinous dbx symbol name continuation! */
1799 if (look_ahead_type
== NULL
)
1802 STABS_CONTINUE (pp
);
1804 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1807 /* Invalid symtab info for member function. */
1813 /* g++ version 1 kludge */
1814 new_sublist
-> fn_field
.type
= look_ahead_type
;
1815 look_ahead_type
= NULL
;
1825 /* If this is just a stub, then we don't have the real name here. */
1827 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1829 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1830 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1831 new_sublist
-> fn_field
.is_stub
= 1;
1833 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1836 /* Set this member function's visibility fields. */
1839 case VISIBILITY_PRIVATE
:
1840 new_sublist
-> fn_field
.is_private
= 1;
1842 case VISIBILITY_PROTECTED
:
1843 new_sublist
-> fn_field
.is_protected
= 1;
1847 STABS_CONTINUE (pp
);
1850 case 'A': /* Normal functions. */
1851 new_sublist
-> fn_field
.is_const
= 0;
1852 new_sublist
-> fn_field
.is_volatile
= 0;
1855 case 'B': /* `const' member functions. */
1856 new_sublist
-> fn_field
.is_const
= 1;
1857 new_sublist
-> fn_field
.is_volatile
= 0;
1860 case 'C': /* `volatile' member function. */
1861 new_sublist
-> fn_field
.is_const
= 0;
1862 new_sublist
-> fn_field
.is_volatile
= 1;
1865 case 'D': /* `const volatile' member function. */
1866 new_sublist
-> fn_field
.is_const
= 1;
1867 new_sublist
-> fn_field
.is_volatile
= 1;
1870 case '*': /* File compiled with g++ version 1 -- no info */
1875 complain (&const_vol_complaint
, **pp
);
1884 /* virtual member function, followed by index.
1885 The sign bit is set to distinguish pointers-to-methods
1886 from virtual function indicies. Since the array is
1887 in words, the quantity must be shifted left by 1
1888 on 16 bit machine, and by 2 on 32 bit machine, forcing
1889 the sign bit out, and usable as a valid index into
1890 the array. Remove the sign bit here. */
1891 new_sublist
-> fn_field
.voffset
=
1892 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1896 STABS_CONTINUE (pp
);
1897 if (**pp
== ';' || **pp
== '\0')
1899 /* Must be g++ version 1. */
1900 new_sublist
-> fn_field
.fcontext
= 0;
1904 /* Figure out from whence this virtual function came.
1905 It may belong to virtual function table of
1906 one of its baseclasses. */
1907 look_ahead_type
= read_type (pp
, objfile
);
1910 /* g++ version 1 overloaded methods. */
1914 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1923 look_ahead_type
= NULL
;
1929 /* static member function. */
1930 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1931 if (strncmp (new_sublist
-> fn_field
.physname
,
1932 main_fn_name
, strlen (main_fn_name
)))
1934 new_sublist
-> fn_field
.is_stub
= 1;
1940 complain (&member_fn_complaint
, (*pp
)[-1]);
1941 /* Fall through into normal member function. */
1944 /* normal member function. */
1945 new_sublist
-> fn_field
.voffset
= 0;
1946 new_sublist
-> fn_field
.fcontext
= 0;
1950 new_sublist
-> next
= sublist
;
1951 sublist
= new_sublist
;
1953 STABS_CONTINUE (pp
);
1955 while (**pp
!= ';' && **pp
!= '\0');
1959 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1960 obstack_alloc (&objfile
-> type_obstack
,
1961 sizeof (struct fn_field
) * length
);
1962 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
1963 sizeof (struct fn_field
) * length
);
1964 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
1966 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
1969 new_fnlist
-> fn_fieldlist
.length
= length
;
1970 new_fnlist
-> next
= fip
-> fnlist
;
1971 fip
-> fnlist
= new_fnlist
;
1973 total_length
+= length
;
1974 STABS_CONTINUE (pp
);
1979 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1980 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
1981 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
1982 memset (TYPE_FN_FIELDLISTS (type
), 0,
1983 sizeof (struct fn_fieldlist
) * nfn_fields
);
1984 TYPE_NFN_FIELDS (type
) = nfn_fields
;
1985 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
1991 /* Special GNU C++ name.
1993 Returns 1 for success, 0 for failure. "failure" means that we can't
1994 keep parsing and it's time for error_type(). */
1997 read_cpp_abbrev (fip
, pp
, type
, objfile
)
1998 struct field_info
*fip
;
2001 struct objfile
*objfile
;
2006 struct type
*context
;
2016 /* At this point, *pp points to something like "22:23=*22...",
2017 where the type number before the ':' is the "context" and
2018 everything after is a regular type definition. Lookup the
2019 type, find it's name, and construct the field name. */
2021 context
= read_type (pp
, objfile
);
2025 case 'f': /* $vf -- a virtual function table pointer */
2026 fip
->list
->field
.name
=
2027 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2030 case 'b': /* $vb -- a virtual bsomethingorother */
2031 name
= type_name_no_tag (context
);
2034 complain (&invalid_cpp_type_complaint
, symnum
);
2037 fip
->list
->field
.name
=
2038 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2042 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2043 fip
->list
->field
.name
=
2044 obconcat (&objfile
->type_obstack
,
2045 "INVALID_CPLUSPLUS_ABBREV", "", "");
2049 /* At this point, *pp points to the ':'. Skip it and read the
2055 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2058 fip
->list
->field
.type
= read_type (pp
, objfile
);
2060 (*pp
)++; /* Skip the comma. */
2066 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2070 /* This field is unpacked. */
2071 fip
->list
->field
.bitsize
= 0;
2072 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2076 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2077 /* We have no idea what syntax an unrecognized abbrev would have, so
2078 better return 0. If we returned 1, we would need to at least advance
2079 *pp to avoid an infinite loop. */
2086 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2087 struct field_info
*fip
;
2091 struct objfile
*objfile
;
2093 fip
-> list
-> field
.name
=
2094 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2097 /* This means we have a visibility for a field coming. */
2101 fip
-> list
-> visibility
= *(*pp
)++;
2102 switch (fip
-> list
-> visibility
)
2104 case VISIBILITY_PRIVATE
:
2105 case VISIBILITY_PROTECTED
:
2108 case VISIBILITY_PUBLIC
:
2113 /* Unknown visibility specifier. */
2114 complain (&stabs_general_complaint
,
2115 "unknown visibility specifier");
2122 /* normal dbx-style format, no explicit visibility */
2123 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2126 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2131 /* Possible future hook for nested types. */
2134 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2140 /* Static class member. */
2141 fip
-> list
-> field
.bitpos
= (long) -1;
2147 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2151 else if (**pp
!= ',')
2153 /* Bad structure-type format. */
2154 complain (&stabs_general_complaint
, "bad structure-type format");
2158 (*pp
)++; /* Skip the comma. */
2162 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2165 complain (&stabs_general_complaint
, "bad structure-type format");
2168 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2171 complain (&stabs_general_complaint
, "bad structure-type format");
2176 /* FIXME-tiemann: Can't the compiler put out something which
2177 lets us distinguish these? (or maybe just not put out anything
2178 for the field). What is the story here? What does the compiler
2179 really do? Also, patch gdb.texinfo for this case; I document
2180 it as a possible problem there. Search for "DBX-style". */
2182 /* This is wrong because this is identical to the symbols
2183 produced for GCC 0-size arrays. For example:
2188 The code which dumped core in such circumstances should be
2189 fixed not to dump core. */
2191 /* g++ -g0 can put out bitpos & bitsize zero for a static
2192 field. This does not give us any way of getting its
2193 class, so we can't know its name. But we can just
2194 ignore the field so we don't dump core and other nasty
2196 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2198 complain (&dbx_class_complaint
);
2199 /* Ignore this field. */
2200 fip
-> list
= fip
-> list
-> next
;
2205 /* Detect an unpacked field and mark it as such.
2206 dbx gives a bit size for all fields.
2207 Note that forward refs cannot be packed,
2208 and treat enums as if they had the width of ints. */
2210 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2211 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2213 fip
-> list
-> field
.bitsize
= 0;
2215 if ((fip
-> list
-> field
.bitsize
2216 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2217 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2218 && (fip
-> list
-> field
.bitsize
2223 fip
-> list
-> field
.bitpos
% 8 == 0)
2225 fip
-> list
-> field
.bitsize
= 0;
2231 /* Read struct or class data fields. They have the form:
2233 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2235 At the end, we see a semicolon instead of a field.
2237 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2240 The optional VISIBILITY is one of:
2242 '/0' (VISIBILITY_PRIVATE)
2243 '/1' (VISIBILITY_PROTECTED)
2244 '/2' (VISIBILITY_PUBLIC)
2246 or nothing, for C style fields with public visibility.
2248 Returns 1 for success, 0 for failure. */
2251 read_struct_fields (fip
, pp
, type
, objfile
)
2252 struct field_info
*fip
;
2255 struct objfile
*objfile
;
2258 struct nextfield
*new;
2260 /* We better set p right now, in case there are no fields at all... */
2264 /* Read each data member type until we find the terminating ';' at the end of
2265 the data member list, or break for some other reason such as finding the
2266 start of the member function list. */
2270 STABS_CONTINUE (pp
);
2271 /* Get space to record the next field's data. */
2272 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2273 make_cleanup (free
, new);
2274 memset (new, 0, sizeof (struct nextfield
));
2275 new -> next
= fip
-> list
;
2278 /* Get the field name. */
2280 /* If is starts with CPLUS_MARKER it is a special abbreviation, unless
2281 the CPLUS_MARKER is followed by an underscore, in which case it is
2282 just the name of an anonymous type, which we should handle like any
2284 if (*p
== CPLUS_MARKER
&& p
[1] != '_')
2286 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2291 /* Look for the ':' that separates the field name from the field
2292 values. Data members are delimited by a single ':', while member
2293 functions are delimited by a pair of ':'s. When we hit the member
2294 functions (if any), terminate scan loop and return. */
2296 while (*p
!= ':' && *p
!= '\0')
2303 /* Check to see if we have hit the member functions yet. */
2308 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2312 /* chill the list of fields: the last entry (at the head) is a
2313 partially constructed entry which we now scrub. */
2314 fip
-> list
= fip
-> list
-> next
;
2319 /* The stabs for C++ derived classes contain baseclass information which
2320 is marked by a '!' character after the total size. This function is
2321 called when we encounter the baseclass marker, and slurps up all the
2322 baseclass information.
2324 Immediately following the '!' marker is the number of base classes that
2325 the class is derived from, followed by information for each base class.
2326 For each base class, there are two visibility specifiers, a bit offset
2327 to the base class information within the derived class, a reference to
2328 the type for the base class, and a terminating semicolon.
2330 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2332 Baseclass information marker __________________|| | | | | | |
2333 Number of baseclasses __________________________| | | | | | |
2334 Visibility specifiers (2) ________________________| | | | | |
2335 Offset in bits from start of class _________________| | | | |
2336 Type number for base class ___________________________| | | |
2337 Visibility specifiers (2) _______________________________| | |
2338 Offset in bits from start of class ________________________| |
2339 Type number of base class ____________________________________|
2341 Return 1 for success, 0 for (error-type-inducing) failure. */
2344 read_baseclasses (fip
, pp
, type
, objfile
)
2345 struct field_info
*fip
;
2348 struct objfile
*objfile
;
2351 struct nextfield
*new;
2359 /* Skip the '!' baseclass information marker. */
2363 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2366 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2372 /* Some stupid compilers have trouble with the following, so break
2373 it up into simpler expressions. */
2374 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2375 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2378 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2381 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2382 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2386 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2388 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2390 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2391 make_cleanup (free
, new);
2392 memset (new, 0, sizeof (struct nextfield
));
2393 new -> next
= fip
-> list
;
2395 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2397 STABS_CONTINUE (pp
);
2401 /* Nothing to do. */
2404 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2407 /* Bad visibility format. */
2411 new -> visibility
= *(*pp
)++;
2412 switch (new -> visibility
)
2414 case VISIBILITY_PRIVATE
:
2415 case VISIBILITY_PROTECTED
:
2416 case VISIBILITY_PUBLIC
:
2419 /* Bad visibility format. */
2426 /* The remaining value is the bit offset of the portion of the object
2427 corresponding to this baseclass. Always zero in the absence of
2428 multiple inheritance. */
2430 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2435 /* The last piece of baseclass information is the type of the
2436 base class. Read it, and remember it's type name as this
2439 new -> field
.type
= read_type (pp
, objfile
);
2440 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2442 /* skip trailing ';' and bump count of number of fields seen */
2451 /* The tail end of stabs for C++ classes that contain a virtual function
2452 pointer contains a tilde, a %, and a type number.
2453 The type number refers to the base class (possibly this class itself) which
2454 contains the vtable pointer for the current class.
2456 This function is called when we have parsed all the method declarations,
2457 so we can look for the vptr base class info. */
2460 read_tilde_fields (fip
, pp
, type
, objfile
)
2461 struct field_info
*fip
;
2464 struct objfile
*objfile
;
2468 STABS_CONTINUE (pp
);
2470 /* If we are positioned at a ';', then skip it. */
2480 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2482 /* Obsolete flags that used to indicate the presence
2483 of constructors and/or destructors. */
2487 /* Read either a '%' or the final ';'. */
2488 if (*(*pp
)++ == '%')
2490 /* The next number is the type number of the base class
2491 (possibly our own class) which supplies the vtable for
2492 this class. Parse it out, and search that class to find
2493 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2494 and TYPE_VPTR_FIELDNO. */
2499 t
= read_type (pp
, objfile
);
2501 while (*p
!= '\0' && *p
!= ';')
2507 /* Premature end of symbol. */
2511 TYPE_VPTR_BASETYPE (type
) = t
;
2512 if (type
== t
) /* Our own class provides vtbl ptr */
2514 for (i
= TYPE_NFIELDS (t
) - 1;
2515 i
>= TYPE_N_BASECLASSES (t
);
2518 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2519 sizeof (vptr_name
) - 1))
2521 TYPE_VPTR_FIELDNO (type
) = i
;
2525 /* Virtual function table field not found. */
2526 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2531 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2542 attach_fn_fields_to_type (fip
, type
)
2543 struct field_info
*fip
;
2544 register struct type
*type
;
2548 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2550 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2552 /* @@ Memory leak on objfile -> type_obstack? */
2555 TYPE_NFN_FIELDS_TOTAL (type
) +=
2556 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2559 for (n
= TYPE_NFN_FIELDS (type
);
2560 fip
-> fnlist
!= NULL
;
2561 fip
-> fnlist
= fip
-> fnlist
-> next
)
2563 --n
; /* Circumvent Sun3 compiler bug */
2564 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2569 /* Create the vector of fields, and record how big it is.
2570 We need this info to record proper virtual function table information
2571 for this class's virtual functions. */
2574 attach_fields_to_type (fip
, type
, objfile
)
2575 struct field_info
*fip
;
2576 register struct type
*type
;
2577 struct objfile
*objfile
;
2579 register int nfields
= 0;
2580 register int non_public_fields
= 0;
2581 register struct nextfield
*scan
;
2583 /* Count up the number of fields that we have, as well as taking note of
2584 whether or not there are any non-public fields, which requires us to
2585 allocate and build the private_field_bits and protected_field_bits
2588 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2591 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2593 non_public_fields
++;
2597 /* Now we know how many fields there are, and whether or not there are any
2598 non-public fields. Record the field count, allocate space for the
2599 array of fields, and create blank visibility bitfields if necessary. */
2601 TYPE_NFIELDS (type
) = nfields
;
2602 TYPE_FIELDS (type
) = (struct field
*)
2603 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2604 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2606 if (non_public_fields
)
2608 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2610 TYPE_FIELD_PRIVATE_BITS (type
) =
2611 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2612 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2614 TYPE_FIELD_PROTECTED_BITS (type
) =
2615 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2616 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2619 /* Copy the saved-up fields into the field vector. Start from the head
2620 of the list, adding to the tail of the field array, so that they end
2621 up in the same order in the array in which they were added to the list. */
2623 while (nfields
-- > 0)
2625 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2626 switch (fip
-> list
-> visibility
)
2628 case VISIBILITY_PRIVATE
:
2629 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2632 case VISIBILITY_PROTECTED
:
2633 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2636 case VISIBILITY_PUBLIC
:
2640 /* Should warn about this unknown visibility? */
2643 fip
-> list
= fip
-> list
-> next
;
2648 /* Read the description of a structure (or union type) and return an object
2649 describing the type.
2651 PP points to a character pointer that points to the next unconsumed token
2652 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2653 *PP will point to "4a:1,0,32;;".
2655 TYPE points to an incomplete type that needs to be filled in.
2657 OBJFILE points to the current objfile from which the stabs information is
2658 being read. (Note that it is redundant in that TYPE also contains a pointer
2659 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2662 static struct type
*
2663 read_struct_type (pp
, type
, objfile
)
2666 struct objfile
*objfile
;
2668 struct cleanup
*back_to
;
2669 struct field_info fi
;
2674 back_to
= make_cleanup (null_cleanup
, 0);
2676 INIT_CPLUS_SPECIFIC (type
);
2677 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2679 /* First comes the total size in bytes. */
2683 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2685 return error_type (pp
);
2688 /* Now read the baseclasses, if any, read the regular C struct or C++
2689 class member fields, attach the fields to the type, read the C++
2690 member functions, attach them to the type, and then read any tilde
2691 field (baseclass specifier for the class holding the main vtable). */
2693 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2694 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2695 || !attach_fields_to_type (&fi
, type
, objfile
)
2696 || !read_member_functions (&fi
, pp
, type
, objfile
)
2697 || !attach_fn_fields_to_type (&fi
, type
)
2698 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2700 do_cleanups (back_to
);
2701 return (error_type (pp
));
2704 do_cleanups (back_to
);
2708 /* Read a definition of an array type,
2709 and create and return a suitable type object.
2710 Also creates a range type which represents the bounds of that
2713 static struct type
*
2714 read_array_type (pp
, type
, objfile
)
2716 register struct type
*type
;
2717 struct objfile
*objfile
;
2719 struct type
*index_type
, *element_type
, *range_type
;
2724 /* Format of an array type:
2725 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2728 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2729 for these, produce a type like float[][]. */
2731 index_type
= read_type (pp
, objfile
);
2733 /* Improper format of array type decl. */
2734 return error_type (pp
);
2737 if (!(**pp
>= '0' && **pp
<= '9'))
2742 lower
= read_huge_number (pp
, ';', &nbits
);
2744 return error_type (pp
);
2746 if (!(**pp
>= '0' && **pp
<= '9'))
2751 upper
= read_huge_number (pp
, ';', &nbits
);
2753 return error_type (pp
);
2755 element_type
= read_type (pp
, objfile
);
2764 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2765 type
= create_array_type (type
, element_type
, range_type
);
2767 /* If we have an array whose element type is not yet known, but whose
2768 bounds *are* known, record it to be adjusted at the end of the file. */
2770 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2772 add_undefined_type (type
);
2779 /* Read a definition of an enumeration type,
2780 and create and return a suitable type object.
2781 Also defines the symbols that represent the values of the type. */
2783 static struct type
*
2784 read_enum_type (pp
, type
, objfile
)
2786 register struct type
*type
;
2787 struct objfile
*objfile
;
2792 register struct symbol
*sym
;
2794 struct pending
**symlist
;
2795 struct pending
*osyms
, *syms
;
2799 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2800 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2801 to do? For now, force all enum values to file scope. */
2802 if (within_function
)
2803 symlist
= &local_symbols
;
2806 symlist
= &file_symbols
;
2808 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2810 /* Read the value-names and their values.
2811 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2812 A semicolon or comma instead of a NAME means the end. */
2813 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2816 STABS_CONTINUE (pp
);
2818 while (*p
!= ':') p
++;
2819 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2821 n
= read_huge_number (pp
, ',', &nbits
);
2823 return error_type (pp
);
2825 sym
= (struct symbol
*)
2826 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2827 memset (sym
, 0, sizeof (struct symbol
));
2828 SYMBOL_NAME (sym
) = name
;
2829 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2830 SYMBOL_CLASS (sym
) = LOC_CONST
;
2831 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2832 SYMBOL_VALUE (sym
) = n
;
2833 add_symbol_to_list (sym
, symlist
);
2838 (*pp
)++; /* Skip the semicolon. */
2840 /* Now fill in the fields of the type-structure. */
2842 TYPE_LENGTH (type
) = sizeof (int);
2843 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2844 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2845 TYPE_NFIELDS (type
) = nsyms
;
2846 TYPE_FIELDS (type
) = (struct field
*)
2847 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2848 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2850 /* Find the symbols for the values and put them into the type.
2851 The symbols can be found in the symlist that we put them on
2852 to cause them to be defined. osyms contains the old value
2853 of that symlist; everything up to there was defined by us. */
2854 /* Note that we preserve the order of the enum constants, so
2855 that in something like "enum {FOO, LAST_THING=FOO}" we print
2856 FOO, not LAST_THING. */
2858 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2863 for (; j
< syms
->nsyms
; j
++,n
++)
2865 struct symbol
*xsym
= syms
->symbol
[j
];
2866 SYMBOL_TYPE (xsym
) = type
;
2867 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2868 TYPE_FIELD_VALUE (type
, n
) = 0;
2869 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2870 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2877 /* This screws up perfectly good C programs with enums. FIXME. */
2878 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2879 if(TYPE_NFIELDS(type
) == 2 &&
2880 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2881 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2882 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2883 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2884 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2890 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2891 typedefs in every file (for int, long, etc):
2893 type = b <signed> <width>; <offset>; <nbits>
2894 signed = u or s. Possible c in addition to u or s (for char?).
2895 offset = offset from high order bit to start bit of type.
2896 width is # bytes in object of this type, nbits is # bits in type.
2898 The width/offset stuff appears to be for small objects stored in
2899 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2902 static struct type
*
2903 read_sun_builtin_type (pp
, typenums
, objfile
)
2906 struct objfile
*objfile
;
2921 return error_type (pp
);
2925 /* For some odd reason, all forms of char put a c here. This is strange
2926 because no other type has this honor. We can safely ignore this because
2927 we actually determine 'char'acterness by the number of bits specified in
2933 /* The first number appears to be the number of bytes occupied
2934 by this type, except that unsigned short is 4 instead of 2.
2935 Since this information is redundant with the third number,
2936 we will ignore it. */
2937 read_huge_number (pp
, ';', &nbits
);
2939 return error_type (pp
);
2941 /* The second number is always 0, so ignore it too. */
2942 read_huge_number (pp
, ';', &nbits
);
2944 return error_type (pp
);
2946 /* The third number is the number of bits for this type. */
2947 type_bits
= read_huge_number (pp
, 0, &nbits
);
2949 return error_type (pp
);
2952 /* FIXME. Here we should just be able to make a type of the right
2953 number of bits and signedness. FIXME. */
2955 if (type_bits
== TARGET_LONG_LONG_BIT
)
2956 return (lookup_fundamental_type (objfile
,
2957 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
2959 if (type_bits
== TARGET_INT_BIT
)
2961 /* FIXME -- the only way to distinguish `int' from `long'
2962 is to look at its name! */
2965 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
2966 return lookup_fundamental_type (objfile
, FT_LONG
);
2968 return lookup_fundamental_type (objfile
, FT_INTEGER
);
2972 if (long_kludge_name
2973 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
2974 long_kludge_name
[9] == 'l' /* long */)
2975 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
2976 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
2978 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
2982 if (type_bits
== TARGET_SHORT_BIT
)
2983 return (lookup_fundamental_type (objfile
,
2984 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
2986 if (type_bits
== TARGET_CHAR_BIT
)
2987 return (lookup_fundamental_type (objfile
,
2988 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
2991 return lookup_fundamental_type (objfile
, FT_VOID
);
2993 return error_type (pp
);
2995 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
2996 type_bits
/ TARGET_CHAR_BIT
,
2997 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3002 static struct type
*
3003 read_sun_floating_type (pp
, typenums
, objfile
)
3006 struct objfile
*objfile
;
3012 /* The first number has more details about the type, for example
3014 details
= read_huge_number (pp
, ';', &nbits
);
3016 return error_type (pp
);
3018 /* The second number is the number of bytes occupied by this type */
3019 nbytes
= read_huge_number (pp
, ';', &nbits
);
3021 return error_type (pp
);
3023 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3024 || details
== NF_COMPLEX32
)
3025 /* This is a type we can't handle, but we do know the size.
3026 We also will be able to give it a name. */
3027 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3029 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3032 /* Read a number from the string pointed to by *PP.
3033 The value of *PP is advanced over the number.
3034 If END is nonzero, the character that ends the
3035 number must match END, or an error happens;
3036 and that character is skipped if it does match.
3037 If END is zero, *PP is left pointing to that character.
3039 If the number fits in a long, set *BITS to 0 and return the value.
3040 If not, set *BITS to be the number of bits in the number and return 0.
3042 If encounter garbage, set *BITS to -1 and return 0. */
3045 read_huge_number (pp
, end
, bits
)
3065 /* Leading zero means octal. GCC uses this to output values larger
3066 than an int (because that would be hard in decimal). */
3073 upper_limit
= LONG_MAX
/ radix
;
3074 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3076 if (n
<= upper_limit
)
3079 n
+= c
- '0'; /* FIXME this overflows anyway */
3084 /* This depends on large values being output in octal, which is
3091 /* Ignore leading zeroes. */
3095 else if (c
== '2' || c
== '3')
3121 /* Large decimal constants are an error (because it is hard to
3122 count how many bits are in them). */
3128 /* -0x7f is the same as 0x80. So deal with it by adding one to
3129 the number of bits. */
3141 /* It's *BITS which has the interesting information. */
3145 static struct type
*
3146 read_range_type (pp
, typenums
, objfile
)
3149 struct objfile
*objfile
;
3155 struct type
*result_type
;
3156 struct type
*index_type
;
3158 /* First comes a type we are a subrange of.
3159 In C it is usually 0, 1 or the type being defined. */
3160 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3161 not just a type number. */
3162 if (read_type_number (pp
, rangenums
) != 0)
3163 return error_type (pp
);
3164 self_subrange
= (rangenums
[0] == typenums
[0] &&
3165 rangenums
[1] == typenums
[1]);
3167 /* A semicolon should now follow; skip it. */
3171 /* The remaining two operands are usually lower and upper bounds
3172 of the range. But in some special cases they mean something else. */
3173 n2
= read_huge_number (pp
, ';', &n2bits
);
3174 n3
= read_huge_number (pp
, ';', &n3bits
);
3176 if (n2bits
== -1 || n3bits
== -1)
3177 return error_type (pp
);
3179 /* If limits are huge, must be large integral type. */
3180 if (n2bits
!= 0 || n3bits
!= 0)
3182 char got_signed
= 0;
3183 char got_unsigned
= 0;
3184 /* Number of bits in the type. */
3187 /* Range from 0 to <large number> is an unsigned large integral type. */
3188 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3193 /* Range from <large number> to <large number>-1 is a large signed
3195 else if (n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3201 if (got_signed
|| got_unsigned
)
3203 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3204 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3208 return error_type (pp
);
3211 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3212 if (self_subrange
&& n2
== 0 && n3
== 0)
3213 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3215 /* If n3 is zero and n2 is not, we want a floating type,
3216 and n2 is the width in bytes.
3218 Fortran programs appear to use this for complex types also,
3219 and they give no way to distinguish between double and single-complex!
3221 GDB does not have complex types.
3223 Just return the complex as a float of that size. It won't work right
3224 for the complex values, but at least it makes the file loadable.
3226 FIXME, we may be able to distinguish these by their names. FIXME. */
3228 if (n3
== 0 && n2
> 0)
3230 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3233 /* If the upper bound is -1, it must really be an unsigned int. */
3235 else if (n2
== 0 && n3
== -1)
3237 /* It is unsigned int or unsigned long. */
3238 /* GCC sometimes uses this for long long too. We could
3239 distinguish it by the name, but we don't. */
3240 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3241 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3244 /* Special case: char is defined (Who knows why) as a subrange of
3245 itself with range 0-127. */
3246 else if (self_subrange
&& n2
== 0 && n3
== 127)
3247 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3249 /* We used to do this only for subrange of self or subrange of int. */
3253 /* n3 actually gives the size. */
3254 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3257 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3259 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3261 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3262 "unsigned long", and we already checked for that,
3263 so don't need to test for it here. */
3265 /* I think this is for Convex "long long". Since I don't know whether
3266 Convex sets self_subrange, I also accept that particular size regardless
3267 of self_subrange. */
3268 else if (n3
== 0 && n2
< 0
3270 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3271 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3272 else if (n2
== -n3
-1)
3275 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3277 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3278 if (n3
== 0x7fffffff)
3279 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3282 /* We have a real range type on our hands. Allocate space and
3283 return a real pointer. */
3285 /* At this point I don't have the faintest idea how to deal with
3286 a self_subrange type; I'm going to assume that this is used
3287 as an idiom, and that all of them are special cases. So . . . */
3289 return error_type (pp
);
3291 index_type
= *dbx_lookup_type (rangenums
);
3292 if (index_type
== NULL
)
3294 /* Does this actually ever happen? Is that why we are worrying
3295 about dealing with it rather than just calling error_type? */
3297 static struct type
*range_type_index
;
3299 complain (&range_type_base_complaint
, rangenums
[1]);
3300 if (range_type_index
== NULL
)
3302 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3303 0, "range type index type", NULL
);
3304 index_type
= range_type_index
;
3307 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3308 return (result_type
);
3311 /* Read in an argument list. This is a list of types, separated by commas
3312 and terminated with END. Return the list of types read in, or (struct type
3313 **)-1 if there is an error. */
3315 static struct type
**
3316 read_args (pp
, end
, objfile
)
3319 struct objfile
*objfile
;
3321 /* FIXME! Remove this arbitrary limit! */
3322 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3328 /* Invalid argument list: no ','. */
3329 return (struct type
**)-1;
3331 STABS_CONTINUE (pp
);
3332 types
[n
++] = read_type (pp
, objfile
);
3334 (*pp
)++; /* get past `end' (the ':' character) */
3338 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3340 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3342 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3343 memset (rval
+ n
, 0, sizeof (struct type
*));
3347 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3349 memcpy (rval
, types
, n
* sizeof (struct type
*));
3353 /* Add a common block's start address to the offset of each symbol
3354 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3355 the common block name). */
3358 fix_common_block (sym
, valu
)
3362 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3363 for ( ; next
; next
= next
->next
)
3366 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3367 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3373 /* What about types defined as forward references inside of a small lexical
3375 /* Add a type to the list of undefined types to be checked through
3376 once this file has been read in. */
3379 add_undefined_type (type
)
3382 if (undef_types_length
== undef_types_allocated
)
3384 undef_types_allocated
*= 2;
3385 undef_types
= (struct type
**)
3386 xrealloc ((char *) undef_types
,
3387 undef_types_allocated
* sizeof (struct type
*));
3389 undef_types
[undef_types_length
++] = type
;
3392 /* Go through each undefined type, see if it's still undefined, and fix it
3393 up if possible. We have two kinds of undefined types:
3395 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3396 Fix: update array length using the element bounds
3397 and the target type's length.
3398 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3399 yet defined at the time a pointer to it was made.
3400 Fix: Do a full lookup on the struct/union tag. */
3402 cleanup_undefined_types ()
3406 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3408 switch (TYPE_CODE (*type
))
3411 case TYPE_CODE_STRUCT
:
3412 case TYPE_CODE_UNION
:
3413 case TYPE_CODE_ENUM
:
3415 /* Check if it has been defined since. */
3416 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3418 struct pending
*ppt
;
3420 /* Name of the type, without "struct" or "union" */
3421 char *typename
= TYPE_TAG_NAME (*type
);
3423 if (typename
== NULL
)
3425 static struct complaint msg
= {"need a type name", 0, 0};
3429 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3431 for (i
= 0; i
< ppt
->nsyms
; i
++)
3433 struct symbol
*sym
= ppt
->symbol
[i
];
3435 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3436 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3437 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3439 && STREQ (SYMBOL_NAME (sym
), typename
))
3441 memcpy (*type
, SYMBOL_TYPE (sym
),
3442 sizeof (struct type
));
3450 case TYPE_CODE_ARRAY
:
3452 struct type
*range_type
;
3455 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3457 if (TYPE_NFIELDS (*type
) != 1)
3459 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3460 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3463 /* Now recompute the length of the array type, based on its
3464 number of elements and the target type's length. */
3465 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3466 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3467 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3468 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3475 static struct complaint msg
= {"\
3476 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3477 complain (&msg
, TYPE_CODE (*type
));
3482 undef_types_length
= 0;
3485 /* Scan through all of the global symbols defined in the object file,
3486 assigning values to the debugging symbols that need to be assigned
3487 to. Get these symbols from the minimal symbol table. */
3490 scan_file_globals (objfile
)
3491 struct objfile
*objfile
;
3494 struct minimal_symbol
*msymbol
;
3495 struct symbol
*sym
, *prev
;
3497 if (objfile
->msymbols
== 0) /* Beware the null file. */
3500 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3506 /* Get the hash index and check all the symbols
3507 under that hash index. */
3509 hash
= hashname (SYMBOL_NAME (msymbol
));
3511 for (sym
= global_sym_chain
[hash
]; sym
;)
3513 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3514 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3516 /* Splice this symbol out of the hash chain and
3517 assign the value we have to it. */
3520 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3524 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3527 /* Check to see whether we need to fix up a common block. */
3528 /* Note: this code might be executed several times for
3529 the same symbol if there are multiple references. */
3531 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3533 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3537 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3542 sym
= SYMBOL_VALUE_CHAIN (prev
);
3546 sym
= global_sym_chain
[hash
];
3552 sym
= SYMBOL_VALUE_CHAIN (sym
);
3558 /* Initialize anything that needs initializing when starting to read
3559 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3567 /* Initialize anything that needs initializing when a completely new
3568 symbol file is specified (not just adding some symbols from another
3569 file, e.g. a shared library). */
3572 stabsread_new_init ()
3574 /* Empty the hash table of global syms looking for values. */
3575 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3578 /* Initialize anything that needs initializing at the same time as
3579 start_symtab() is called. */
3583 global_stabs
= NULL
; /* AIX COFF */
3584 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3585 n_this_object_header_files
= 1;
3586 type_vector_length
= 0;
3587 type_vector
= (struct type
**) 0;
3590 /* Call after end_symtab() */
3596 free ((char *) type_vector
);
3599 type_vector_length
= 0;
3600 previous_stab_code
= 0;
3604 finish_global_stabs (objfile
)
3605 struct objfile
*objfile
;
3609 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3610 free ((PTR
) global_stabs
);
3611 global_stabs
= NULL
;
3615 /* Initializer for this module */
3618 _initialize_stabsread ()
3620 undef_types_allocated
= 20;
3621 undef_types_length
= 0;
3622 undef_types
= (struct type
**)
3623 xmalloc (undef_types_allocated
* sizeof (struct type
*));