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 /* Size in bits of type if specified by a type attribute, or -1 if
1215 there is no size attribute. */
1218 /* Read type number if present. The type number may be omitted.
1219 for instance in a two-dimensional array declared with type
1220 "ar1;1;10;ar1;1;10;4". */
1221 if ((**pp
>= '0' && **pp
<= '9')
1224 if (read_type_number (pp
, typenums
) != 0)
1225 return error_type (pp
);
1227 /* Type is not being defined here. Either it already exists,
1228 or this is a forward reference to it. dbx_alloc_type handles
1231 return dbx_alloc_type (typenums
, objfile
);
1233 /* Type is being defined here. */
1240 /* It might be a type attribute or a member type. */
1241 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1246 /* Type attributes. */
1249 /* Skip to the semicolon. */
1250 while (*p
!= ';' && *p
!= '\0')
1254 return error_type (pp
);
1256 /* Skip the semicolon. */
1262 type_size
= atoi (attr
+ 1);
1267 /* Ignore unrecognized type attributes, so future compilers
1268 can invent new ones. */
1273 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1278 /* 'typenums=' not present, type is anonymous. Read and return
1279 the definition, but don't put it in the type vector. */
1280 typenums
[0] = typenums
[1] = -1;
1284 type_descriptor
= (*pp
)[-1];
1285 switch (type_descriptor
)
1289 enum type_code code
;
1291 /* Used to index through file_symbols. */
1292 struct pending
*ppt
;
1295 /* Name including "struct", etc. */
1301 /* Set the type code according to the following letter. */
1305 code
= TYPE_CODE_STRUCT
;
1308 code
= TYPE_CODE_UNION
;
1311 code
= TYPE_CODE_ENUM
;
1314 return error_type (pp
);
1317 to
= type_name
= (char *)
1318 obstack_alloc (&objfile
-> type_obstack
,
1319 (((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1321 /* Copy the name. */
1323 while ((*to
++ = *from
++) != ':')
1327 /* Set the pointer ahead of the name which we just read. */
1331 /* Now check to see whether the type has already been declared. */
1332 /* This is necessary at least in the case where the
1333 program says something like
1335 The compiler puts out a cross-reference; we better find
1336 set the length of the structure correctly so we can
1337 set the length of the array. */
1338 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1339 for (i
= 0; i
< ppt
->nsyms
; i
++)
1341 struct symbol
*sym
= ppt
->symbol
[i
];
1343 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1344 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1345 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1346 && STREQ (SYMBOL_NAME (sym
), type_name
))
1348 obstack_free (&objfile
-> type_obstack
, type_name
);
1349 type
= SYMBOL_TYPE (sym
);
1354 /* Didn't find the type to which this refers, so we must
1355 be dealing with a forward reference. Allocate a type
1356 structure for it, and keep track of it so we can
1357 fill in the rest of the fields when we get the full
1359 type
= dbx_alloc_type (typenums
, objfile
);
1360 TYPE_CODE (type
) = code
;
1361 TYPE_TAG_NAME (type
) = type_name
;
1362 INIT_CPLUS_SPECIFIC(type
);
1363 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1365 add_undefined_type (type
);
1369 case '-': /* RS/6000 built-in type */
1383 if (read_type_number (pp
, xtypenums
) != 0)
1384 return error_type (pp
);
1386 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1387 /* It's being defined as itself. That means it is "void". */
1388 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1391 struct type
*xtype
= *dbx_lookup_type (xtypenums
);
1393 /* This can happen if we had '-' followed by a garbage character,
1396 return error_type (pp
);
1398 /* The type is being defined to another type. So we copy the type.
1399 This loses if we copy a C++ class and so we lose track of how
1400 the names are mangled (but g++ doesn't output stabs like this
1403 type
= alloc_type (objfile
);
1404 memcpy (type
, xtype
, sizeof (struct type
));
1406 /* The idea behind clearing the names is that the only purpose
1407 for defining a type to another type is so that the name of
1408 one can be different. So we probably don't need to worry much
1409 about the case where the compiler doesn't give a name to the
1411 TYPE_NAME (type
) = NULL
;
1412 TYPE_TAG_NAME (type
) = NULL
;
1414 if (typenums
[0] != -1)
1415 *dbx_lookup_type (typenums
) = type
;
1418 /* In the following types, we must be sure to overwrite any existing
1419 type that the typenums refer to, rather than allocating a new one
1420 and making the typenums point to the new one. This is because there
1421 may already be pointers to the existing type (if it had been
1422 forward-referenced), and we must change it to a pointer, function,
1423 reference, or whatever, *in-place*. */
1426 type1
= read_type (pp
, objfile
);
1427 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1430 case '&': /* Reference to another type */
1431 type1
= read_type (pp
, objfile
);
1432 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1435 case 'f': /* Function returning another type */
1436 type1
= read_type (pp
, objfile
);
1437 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1440 case 'k': /* Const qualifier on some type (Sun) */
1441 type
= read_type (pp
, objfile
);
1442 /* FIXME! For now, we ignore const and volatile qualifiers. */
1445 case 'B': /* Volatile qual on some type (Sun) */
1446 type
= read_type (pp
, objfile
);
1447 /* FIXME! For now, we ignore const and volatile qualifiers. */
1450 /* FIXME -- we should be doing smash_to_XXX types here. */
1451 case '@': /* Member (class & variable) type */
1453 struct type
*domain
= read_type (pp
, objfile
);
1454 struct type
*memtype
;
1457 /* Invalid member type data format. */
1458 return error_type (pp
);
1461 memtype
= read_type (pp
, objfile
);
1462 type
= dbx_alloc_type (typenums
, objfile
);
1463 smash_to_member_type (type
, domain
, memtype
);
1467 case '#': /* Method (class & fn) type */
1468 if ((*pp
)[0] == '#')
1470 /* We'll get the parameter types from the name. */
1471 struct type
*return_type
;
1474 return_type
= read_type (pp
, objfile
);
1475 if (*(*pp
)++ != ';')
1476 complain (&invalid_member_complaint
, symnum
);
1477 type
= allocate_stub_method (return_type
);
1478 if (typenums
[0] != -1)
1479 *dbx_lookup_type (typenums
) = type
;
1483 struct type
*domain
= read_type (pp
, objfile
);
1484 struct type
*return_type
;
1488 /* Invalid member type data format. */
1489 return error_type (pp
);
1493 return_type
= read_type (pp
, objfile
);
1494 args
= read_args (pp
, ';', objfile
);
1495 type
= dbx_alloc_type (typenums
, objfile
);
1496 smash_to_method_type (type
, domain
, return_type
, args
);
1500 case 'r': /* Range type */
1501 type
= read_range_type (pp
, typenums
, objfile
);
1502 if (typenums
[0] != -1)
1503 *dbx_lookup_type (typenums
) = type
;
1506 case 'b': /* Sun ACC builtin int type */
1507 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1508 if (typenums
[0] != -1)
1509 *dbx_lookup_type (typenums
) = type
;
1512 case 'R': /* Sun ACC builtin float type */
1513 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1514 if (typenums
[0] != -1)
1515 *dbx_lookup_type (typenums
) = type
;
1518 case 'e': /* Enumeration type */
1519 type
= dbx_alloc_type (typenums
, objfile
);
1520 type
= read_enum_type (pp
, type
, objfile
);
1521 if (typenums
[0] != -1)
1522 *dbx_lookup_type (typenums
) = type
;
1525 case 's': /* Struct type */
1526 case 'u': /* Union type */
1527 type
= dbx_alloc_type (typenums
, objfile
);
1528 if (!TYPE_NAME (type
))
1530 TYPE_NAME (type
) = type_synonym_name
;
1532 type_synonym_name
= NULL
;
1533 switch (type_descriptor
)
1536 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1539 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1542 type
= read_struct_type (pp
, type
, objfile
);
1545 case 'a': /* Array type */
1547 return error_type (pp
);
1550 type
= dbx_alloc_type (typenums
, objfile
);
1551 type
= read_array_type (pp
, type
, objfile
);
1555 --*pp
; /* Go back to the symbol in error */
1556 /* Particularly important if it was \0! */
1557 return error_type (pp
);
1562 warning ("GDB internal error, type is NULL in stabsread.c\n");
1563 return error_type (pp
);
1566 /* Size specified in a type attribute overrides any other size. */
1567 if (type_size
!= -1)
1568 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1573 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1574 Return the proper type node for a given builtin type number. */
1576 static struct type
*
1577 rs6000_builtin_type (typenum
)
1580 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1581 #define NUMBER_RECOGNIZED 30
1582 /* This includes an empty slot for type number -0. */
1583 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1584 struct type
*rettype
= NULL
;
1586 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1588 complain (&rs6000_builtin_complaint
, typenum
);
1589 return builtin_type_error
;
1591 if (negative_types
[-typenum
] != NULL
)
1592 return negative_types
[-typenum
];
1594 #if TARGET_CHAR_BIT != 8
1595 #error This code wrong for TARGET_CHAR_BIT not 8
1596 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1597 that if that ever becomes not true, the correct fix will be to
1598 make the size in the struct type to be in bits, not in units of
1605 /* The size of this and all the other types are fixed, defined
1606 by the debugging format. If there is a type called "int" which
1607 is other than 32 bits, then it should use a new negative type
1608 number (or avoid negative type numbers for that case).
1609 See stabs.texinfo. */
1610 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1613 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1616 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1619 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1622 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1623 "unsigned char", NULL
);
1626 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1629 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1630 "unsigned short", NULL
);
1633 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1634 "unsigned int", NULL
);
1637 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1640 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1641 "unsigned long", NULL
);
1644 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1647 /* IEEE single precision (32 bit). */
1648 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1651 /* IEEE double precision (64 bit). */
1652 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1655 /* This is an IEEE double on the RS/6000, and different machines with
1656 different sizes for "long double" should use different negative
1657 type numbers. See stabs.texinfo. */
1658 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1661 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1664 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1667 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1670 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1673 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1676 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1680 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1684 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1688 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1692 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1696 /* Complex type consisting of two IEEE single precision values. */
1697 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1700 /* Complex type consisting of two IEEE double precision values. */
1701 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1704 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1707 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1710 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1713 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1716 negative_types
[-typenum
] = rettype
;
1720 /* This page contains subroutines of read_type. */
1722 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1723 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1724 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1726 /* Read member function stabs info for C++ classes. The form of each member
1729 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1731 An example with two member functions is:
1733 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1735 For the case of overloaded operators, the format is op$::*.funcs, where
1736 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1737 name (such as `+=') and `.' marks the end of the operator name.
1739 Returns 1 for success, 0 for failure. */
1742 read_member_functions (fip
, pp
, type
, objfile
)
1743 struct field_info
*fip
;
1746 struct objfile
*objfile
;
1750 /* Total number of member functions defined in this class. If the class
1751 defines two `f' functions, and one `g' function, then this will have
1753 int total_length
= 0;
1757 struct next_fnfield
*next
;
1758 struct fn_field fn_field
;
1760 struct type
*look_ahead_type
;
1761 struct next_fnfieldlist
*new_fnlist
;
1762 struct next_fnfield
*new_sublist
;
1766 /* Process each list until we find something that is not a member function
1767 or find the end of the functions. */
1771 /* We should be positioned at the start of the function name.
1772 Scan forward to find the first ':' and if it is not the
1773 first of a "::" delimiter, then this is not a member function. */
1785 look_ahead_type
= NULL
;
1788 new_fnlist
= (struct next_fnfieldlist
*)
1789 xmalloc (sizeof (struct next_fnfieldlist
));
1790 make_cleanup (free
, new_fnlist
);
1791 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1793 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1795 /* This is a completely wierd case. In order to stuff in the
1796 names that might contain colons (the usual name delimiter),
1797 Mike Tiemann defined a different name format which is
1798 signalled if the identifier is "op$". In that case, the
1799 format is "op$::XXXX." where XXXX is the name. This is
1800 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1801 /* This lets the user type "break operator+".
1802 We could just put in "+" as the name, but that wouldn't
1804 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1805 char *o
= opname
+ 3;
1807 /* Skip past '::'. */
1810 STABS_CONTINUE (pp
);
1816 main_fn_name
= savestring (opname
, o
- opname
);
1822 main_fn_name
= savestring (*pp
, p
- *pp
);
1823 /* Skip past '::'. */
1826 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1831 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1832 make_cleanup (free
, new_sublist
);
1833 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1835 /* Check for and handle cretinous dbx symbol name continuation! */
1836 if (look_ahead_type
== NULL
)
1839 STABS_CONTINUE (pp
);
1841 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1844 /* Invalid symtab info for member function. */
1850 /* g++ version 1 kludge */
1851 new_sublist
-> fn_field
.type
= look_ahead_type
;
1852 look_ahead_type
= NULL
;
1862 /* If this is just a stub, then we don't have the real name here. */
1864 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1866 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1867 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1868 new_sublist
-> fn_field
.is_stub
= 1;
1870 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1873 /* Set this member function's visibility fields. */
1876 case VISIBILITY_PRIVATE
:
1877 new_sublist
-> fn_field
.is_private
= 1;
1879 case VISIBILITY_PROTECTED
:
1880 new_sublist
-> fn_field
.is_protected
= 1;
1884 STABS_CONTINUE (pp
);
1887 case 'A': /* Normal functions. */
1888 new_sublist
-> fn_field
.is_const
= 0;
1889 new_sublist
-> fn_field
.is_volatile
= 0;
1892 case 'B': /* `const' member functions. */
1893 new_sublist
-> fn_field
.is_const
= 1;
1894 new_sublist
-> fn_field
.is_volatile
= 0;
1897 case 'C': /* `volatile' member function. */
1898 new_sublist
-> fn_field
.is_const
= 0;
1899 new_sublist
-> fn_field
.is_volatile
= 1;
1902 case 'D': /* `const volatile' member function. */
1903 new_sublist
-> fn_field
.is_const
= 1;
1904 new_sublist
-> fn_field
.is_volatile
= 1;
1907 case '*': /* File compiled with g++ version 1 -- no info */
1912 complain (&const_vol_complaint
, **pp
);
1921 /* virtual member function, followed by index.
1922 The sign bit is set to distinguish pointers-to-methods
1923 from virtual function indicies. Since the array is
1924 in words, the quantity must be shifted left by 1
1925 on 16 bit machine, and by 2 on 32 bit machine, forcing
1926 the sign bit out, and usable as a valid index into
1927 the array. Remove the sign bit here. */
1928 new_sublist
-> fn_field
.voffset
=
1929 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1933 STABS_CONTINUE (pp
);
1934 if (**pp
== ';' || **pp
== '\0')
1936 /* Must be g++ version 1. */
1937 new_sublist
-> fn_field
.fcontext
= 0;
1941 /* Figure out from whence this virtual function came.
1942 It may belong to virtual function table of
1943 one of its baseclasses. */
1944 look_ahead_type
= read_type (pp
, objfile
);
1947 /* g++ version 1 overloaded methods. */
1951 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1960 look_ahead_type
= NULL
;
1966 /* static member function. */
1967 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1968 if (strncmp (new_sublist
-> fn_field
.physname
,
1969 main_fn_name
, strlen (main_fn_name
)))
1971 new_sublist
-> fn_field
.is_stub
= 1;
1977 complain (&member_fn_complaint
, (*pp
)[-1]);
1978 /* Fall through into normal member function. */
1981 /* normal member function. */
1982 new_sublist
-> fn_field
.voffset
= 0;
1983 new_sublist
-> fn_field
.fcontext
= 0;
1987 new_sublist
-> next
= sublist
;
1988 sublist
= new_sublist
;
1990 STABS_CONTINUE (pp
);
1992 while (**pp
!= ';' && **pp
!= '\0');
1996 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1997 obstack_alloc (&objfile
-> type_obstack
,
1998 sizeof (struct fn_field
) * length
);
1999 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2000 sizeof (struct fn_field
) * length
);
2001 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2003 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2006 new_fnlist
-> fn_fieldlist
.length
= length
;
2007 new_fnlist
-> next
= fip
-> fnlist
;
2008 fip
-> fnlist
= new_fnlist
;
2010 total_length
+= length
;
2011 STABS_CONTINUE (pp
);
2016 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2017 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2018 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2019 memset (TYPE_FN_FIELDLISTS (type
), 0,
2020 sizeof (struct fn_fieldlist
) * nfn_fields
);
2021 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2022 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2028 /* Special GNU C++ name.
2030 Returns 1 for success, 0 for failure. "failure" means that we can't
2031 keep parsing and it's time for error_type(). */
2034 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2035 struct field_info
*fip
;
2038 struct objfile
*objfile
;
2043 struct type
*context
;
2053 /* At this point, *pp points to something like "22:23=*22...",
2054 where the type number before the ':' is the "context" and
2055 everything after is a regular type definition. Lookup the
2056 type, find it's name, and construct the field name. */
2058 context
= read_type (pp
, objfile
);
2062 case 'f': /* $vf -- a virtual function table pointer */
2063 fip
->list
->field
.name
=
2064 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2067 case 'b': /* $vb -- a virtual bsomethingorother */
2068 name
= type_name_no_tag (context
);
2071 complain (&invalid_cpp_type_complaint
, symnum
);
2074 fip
->list
->field
.name
=
2075 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2079 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2080 fip
->list
->field
.name
=
2081 obconcat (&objfile
->type_obstack
,
2082 "INVALID_CPLUSPLUS_ABBREV", "", "");
2086 /* At this point, *pp points to the ':'. Skip it and read the
2092 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2095 fip
->list
->field
.type
= read_type (pp
, objfile
);
2097 (*pp
)++; /* Skip the comma. */
2103 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2107 /* This field is unpacked. */
2108 fip
->list
->field
.bitsize
= 0;
2109 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2113 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2114 /* We have no idea what syntax an unrecognized abbrev would have, so
2115 better return 0. If we returned 1, we would need to at least advance
2116 *pp to avoid an infinite loop. */
2123 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2124 struct field_info
*fip
;
2128 struct objfile
*objfile
;
2130 fip
-> list
-> field
.name
=
2131 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2134 /* This means we have a visibility for a field coming. */
2138 fip
-> list
-> visibility
= *(*pp
)++;
2139 switch (fip
-> list
-> visibility
)
2141 case VISIBILITY_PRIVATE
:
2142 case VISIBILITY_PROTECTED
:
2145 case VISIBILITY_PUBLIC
:
2150 /* Unknown visibility specifier. */
2151 complain (&stabs_general_complaint
,
2152 "unknown visibility specifier");
2159 /* normal dbx-style format, no explicit visibility */
2160 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2163 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2168 /* Possible future hook for nested types. */
2171 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2177 /* Static class member. */
2178 fip
-> list
-> field
.bitpos
= (long) -1;
2184 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2188 else if (**pp
!= ',')
2190 /* Bad structure-type format. */
2191 complain (&stabs_general_complaint
, "bad structure-type format");
2195 (*pp
)++; /* Skip the comma. */
2199 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2202 complain (&stabs_general_complaint
, "bad structure-type format");
2205 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2208 complain (&stabs_general_complaint
, "bad structure-type format");
2213 /* FIXME-tiemann: Can't the compiler put out something which
2214 lets us distinguish these? (or maybe just not put out anything
2215 for the field). What is the story here? What does the compiler
2216 really do? Also, patch gdb.texinfo for this case; I document
2217 it as a possible problem there. Search for "DBX-style". */
2219 /* This is wrong because this is identical to the symbols
2220 produced for GCC 0-size arrays. For example:
2225 The code which dumped core in such circumstances should be
2226 fixed not to dump core. */
2228 /* g++ -g0 can put out bitpos & bitsize zero for a static
2229 field. This does not give us any way of getting its
2230 class, so we can't know its name. But we can just
2231 ignore the field so we don't dump core and other nasty
2233 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2235 complain (&dbx_class_complaint
);
2236 /* Ignore this field. */
2237 fip
-> list
= fip
-> list
-> next
;
2242 /* Detect an unpacked field and mark it as such.
2243 dbx gives a bit size for all fields.
2244 Note that forward refs cannot be packed,
2245 and treat enums as if they had the width of ints. */
2247 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2248 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2250 fip
-> list
-> field
.bitsize
= 0;
2252 if ((fip
-> list
-> field
.bitsize
2253 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2254 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2255 && (fip
-> list
-> field
.bitsize
2260 fip
-> list
-> field
.bitpos
% 8 == 0)
2262 fip
-> list
-> field
.bitsize
= 0;
2268 /* Read struct or class data fields. They have the form:
2270 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2272 At the end, we see a semicolon instead of a field.
2274 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2277 The optional VISIBILITY is one of:
2279 '/0' (VISIBILITY_PRIVATE)
2280 '/1' (VISIBILITY_PROTECTED)
2281 '/2' (VISIBILITY_PUBLIC)
2283 or nothing, for C style fields with public visibility.
2285 Returns 1 for success, 0 for failure. */
2288 read_struct_fields (fip
, pp
, type
, objfile
)
2289 struct field_info
*fip
;
2292 struct objfile
*objfile
;
2295 struct nextfield
*new;
2297 /* We better set p right now, in case there are no fields at all... */
2301 /* Read each data member type until we find the terminating ';' at the end of
2302 the data member list, or break for some other reason such as finding the
2303 start of the member function list. */
2307 STABS_CONTINUE (pp
);
2308 /* Get space to record the next field's data. */
2309 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2310 make_cleanup (free
, new);
2311 memset (new, 0, sizeof (struct nextfield
));
2312 new -> next
= fip
-> list
;
2315 /* Get the field name. */
2317 /* If is starts with CPLUS_MARKER it is a special abbreviation, unless
2318 the CPLUS_MARKER is followed by an underscore, in which case it is
2319 just the name of an anonymous type, which we should handle like any
2321 if (*p
== CPLUS_MARKER
&& p
[1] != '_')
2323 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2328 /* Look for the ':' that separates the field name from the field
2329 values. Data members are delimited by a single ':', while member
2330 functions are delimited by a pair of ':'s. When we hit the member
2331 functions (if any), terminate scan loop and return. */
2333 while (*p
!= ':' && *p
!= '\0')
2340 /* Check to see if we have hit the member functions yet. */
2345 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2349 /* chill the list of fields: the last entry (at the head) is a
2350 partially constructed entry which we now scrub. */
2351 fip
-> list
= fip
-> list
-> next
;
2356 /* The stabs for C++ derived classes contain baseclass information which
2357 is marked by a '!' character after the total size. This function is
2358 called when we encounter the baseclass marker, and slurps up all the
2359 baseclass information.
2361 Immediately following the '!' marker is the number of base classes that
2362 the class is derived from, followed by information for each base class.
2363 For each base class, there are two visibility specifiers, a bit offset
2364 to the base class information within the derived class, a reference to
2365 the type for the base class, and a terminating semicolon.
2367 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2369 Baseclass information marker __________________|| | | | | | |
2370 Number of baseclasses __________________________| | | | | | |
2371 Visibility specifiers (2) ________________________| | | | | |
2372 Offset in bits from start of class _________________| | | | |
2373 Type number for base class ___________________________| | | |
2374 Visibility specifiers (2) _______________________________| | |
2375 Offset in bits from start of class ________________________| |
2376 Type number of base class ____________________________________|
2378 Return 1 for success, 0 for (error-type-inducing) failure. */
2381 read_baseclasses (fip
, pp
, type
, objfile
)
2382 struct field_info
*fip
;
2385 struct objfile
*objfile
;
2388 struct nextfield
*new;
2396 /* Skip the '!' baseclass information marker. */
2400 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2403 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2409 /* Some stupid compilers have trouble with the following, so break
2410 it up into simpler expressions. */
2411 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2412 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2415 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2418 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2419 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2423 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2425 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2427 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2428 make_cleanup (free
, new);
2429 memset (new, 0, sizeof (struct nextfield
));
2430 new -> next
= fip
-> list
;
2432 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2434 STABS_CONTINUE (pp
);
2438 /* Nothing to do. */
2441 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2444 /* Bad visibility format. */
2448 new -> visibility
= *(*pp
)++;
2449 switch (new -> visibility
)
2451 case VISIBILITY_PRIVATE
:
2452 case VISIBILITY_PROTECTED
:
2453 case VISIBILITY_PUBLIC
:
2456 /* Bad visibility format. */
2463 /* The remaining value is the bit offset of the portion of the object
2464 corresponding to this baseclass. Always zero in the absence of
2465 multiple inheritance. */
2467 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2472 /* The last piece of baseclass information is the type of the
2473 base class. Read it, and remember it's type name as this
2476 new -> field
.type
= read_type (pp
, objfile
);
2477 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2479 /* skip trailing ';' and bump count of number of fields seen */
2488 /* The tail end of stabs for C++ classes that contain a virtual function
2489 pointer contains a tilde, a %, and a type number.
2490 The type number refers to the base class (possibly this class itself) which
2491 contains the vtable pointer for the current class.
2493 This function is called when we have parsed all the method declarations,
2494 so we can look for the vptr base class info. */
2497 read_tilde_fields (fip
, pp
, type
, objfile
)
2498 struct field_info
*fip
;
2501 struct objfile
*objfile
;
2505 STABS_CONTINUE (pp
);
2507 /* If we are positioned at a ';', then skip it. */
2517 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2519 /* Obsolete flags that used to indicate the presence
2520 of constructors and/or destructors. */
2524 /* Read either a '%' or the final ';'. */
2525 if (*(*pp
)++ == '%')
2527 /* The next number is the type number of the base class
2528 (possibly our own class) which supplies the vtable for
2529 this class. Parse it out, and search that class to find
2530 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2531 and TYPE_VPTR_FIELDNO. */
2536 t
= read_type (pp
, objfile
);
2538 while (*p
!= '\0' && *p
!= ';')
2544 /* Premature end of symbol. */
2548 TYPE_VPTR_BASETYPE (type
) = t
;
2549 if (type
== t
) /* Our own class provides vtbl ptr */
2551 for (i
= TYPE_NFIELDS (t
) - 1;
2552 i
>= TYPE_N_BASECLASSES (t
);
2555 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2556 sizeof (vptr_name
) - 1))
2558 TYPE_VPTR_FIELDNO (type
) = i
;
2562 /* Virtual function table field not found. */
2563 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2568 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2579 attach_fn_fields_to_type (fip
, type
)
2580 struct field_info
*fip
;
2581 register struct type
*type
;
2585 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2587 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2589 /* @@ Memory leak on objfile -> type_obstack? */
2592 TYPE_NFN_FIELDS_TOTAL (type
) +=
2593 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2596 for (n
= TYPE_NFN_FIELDS (type
);
2597 fip
-> fnlist
!= NULL
;
2598 fip
-> fnlist
= fip
-> fnlist
-> next
)
2600 --n
; /* Circumvent Sun3 compiler bug */
2601 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2606 /* Create the vector of fields, and record how big it is.
2607 We need this info to record proper virtual function table information
2608 for this class's virtual functions. */
2611 attach_fields_to_type (fip
, type
, objfile
)
2612 struct field_info
*fip
;
2613 register struct type
*type
;
2614 struct objfile
*objfile
;
2616 register int nfields
= 0;
2617 register int non_public_fields
= 0;
2618 register struct nextfield
*scan
;
2620 /* Count up the number of fields that we have, as well as taking note of
2621 whether or not there are any non-public fields, which requires us to
2622 allocate and build the private_field_bits and protected_field_bits
2625 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2628 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2630 non_public_fields
++;
2634 /* Now we know how many fields there are, and whether or not there are any
2635 non-public fields. Record the field count, allocate space for the
2636 array of fields, and create blank visibility bitfields if necessary. */
2638 TYPE_NFIELDS (type
) = nfields
;
2639 TYPE_FIELDS (type
) = (struct field
*)
2640 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2641 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2643 if (non_public_fields
)
2645 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2647 TYPE_FIELD_PRIVATE_BITS (type
) =
2648 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2649 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2651 TYPE_FIELD_PROTECTED_BITS (type
) =
2652 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2653 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2656 /* Copy the saved-up fields into the field vector. Start from the head
2657 of the list, adding to the tail of the field array, so that they end
2658 up in the same order in the array in which they were added to the list. */
2660 while (nfields
-- > 0)
2662 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2663 switch (fip
-> list
-> visibility
)
2665 case VISIBILITY_PRIVATE
:
2666 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2669 case VISIBILITY_PROTECTED
:
2670 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2673 case VISIBILITY_PUBLIC
:
2677 /* Should warn about this unknown visibility? */
2680 fip
-> list
= fip
-> list
-> next
;
2685 /* Read the description of a structure (or union type) and return an object
2686 describing the type.
2688 PP points to a character pointer that points to the next unconsumed token
2689 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2690 *PP will point to "4a:1,0,32;;".
2692 TYPE points to an incomplete type that needs to be filled in.
2694 OBJFILE points to the current objfile from which the stabs information is
2695 being read. (Note that it is redundant in that TYPE also contains a pointer
2696 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2699 static struct type
*
2700 read_struct_type (pp
, type
, objfile
)
2703 struct objfile
*objfile
;
2705 struct cleanup
*back_to
;
2706 struct field_info fi
;
2711 back_to
= make_cleanup (null_cleanup
, 0);
2713 INIT_CPLUS_SPECIFIC (type
);
2714 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2716 /* First comes the total size in bytes. */
2720 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2722 return error_type (pp
);
2725 /* Now read the baseclasses, if any, read the regular C struct or C++
2726 class member fields, attach the fields to the type, read the C++
2727 member functions, attach them to the type, and then read any tilde
2728 field (baseclass specifier for the class holding the main vtable). */
2730 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2731 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2732 || !attach_fields_to_type (&fi
, type
, objfile
)
2733 || !read_member_functions (&fi
, pp
, type
, objfile
)
2734 || !attach_fn_fields_to_type (&fi
, type
)
2735 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2737 do_cleanups (back_to
);
2738 return (error_type (pp
));
2741 do_cleanups (back_to
);
2745 /* Read a definition of an array type,
2746 and create and return a suitable type object.
2747 Also creates a range type which represents the bounds of that
2750 static struct type
*
2751 read_array_type (pp
, type
, objfile
)
2753 register struct type
*type
;
2754 struct objfile
*objfile
;
2756 struct type
*index_type
, *element_type
, *range_type
;
2761 /* Format of an array type:
2762 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2765 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2766 for these, produce a type like float[][]. */
2768 index_type
= read_type (pp
, objfile
);
2770 /* Improper format of array type decl. */
2771 return error_type (pp
);
2774 if (!(**pp
>= '0' && **pp
<= '9'))
2779 lower
= read_huge_number (pp
, ';', &nbits
);
2781 return error_type (pp
);
2783 if (!(**pp
>= '0' && **pp
<= '9'))
2788 upper
= read_huge_number (pp
, ';', &nbits
);
2790 return error_type (pp
);
2792 element_type
= read_type (pp
, objfile
);
2801 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2802 type
= create_array_type (type
, element_type
, range_type
);
2804 /* If we have an array whose element type is not yet known, but whose
2805 bounds *are* known, record it to be adjusted at the end of the file. */
2807 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2809 add_undefined_type (type
);
2816 /* Read a definition of an enumeration type,
2817 and create and return a suitable type object.
2818 Also defines the symbols that represent the values of the type. */
2820 static struct type
*
2821 read_enum_type (pp
, type
, objfile
)
2823 register struct type
*type
;
2824 struct objfile
*objfile
;
2829 register struct symbol
*sym
;
2831 struct pending
**symlist
;
2832 struct pending
*osyms
, *syms
;
2836 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2837 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2838 to do? For now, force all enum values to file scope. */
2839 if (within_function
)
2840 symlist
= &local_symbols
;
2843 symlist
= &file_symbols
;
2845 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2847 /* Read the value-names and their values.
2848 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2849 A semicolon or comma instead of a NAME means the end. */
2850 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2853 STABS_CONTINUE (pp
);
2855 while (*p
!= ':') p
++;
2856 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2858 n
= read_huge_number (pp
, ',', &nbits
);
2860 return error_type (pp
);
2862 sym
= (struct symbol
*)
2863 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2864 memset (sym
, 0, sizeof (struct symbol
));
2865 SYMBOL_NAME (sym
) = name
;
2866 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2867 SYMBOL_CLASS (sym
) = LOC_CONST
;
2868 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2869 SYMBOL_VALUE (sym
) = n
;
2870 add_symbol_to_list (sym
, symlist
);
2875 (*pp
)++; /* Skip the semicolon. */
2877 /* Now fill in the fields of the type-structure. */
2879 TYPE_LENGTH (type
) = sizeof (int);
2880 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2881 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2882 TYPE_NFIELDS (type
) = nsyms
;
2883 TYPE_FIELDS (type
) = (struct field
*)
2884 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2885 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2887 /* Find the symbols for the values and put them into the type.
2888 The symbols can be found in the symlist that we put them on
2889 to cause them to be defined. osyms contains the old value
2890 of that symlist; everything up to there was defined by us. */
2891 /* Note that we preserve the order of the enum constants, so
2892 that in something like "enum {FOO, LAST_THING=FOO}" we print
2893 FOO, not LAST_THING. */
2895 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2900 for (; j
< syms
->nsyms
; j
++,n
++)
2902 struct symbol
*xsym
= syms
->symbol
[j
];
2903 SYMBOL_TYPE (xsym
) = type
;
2904 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2905 TYPE_FIELD_VALUE (type
, n
) = 0;
2906 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2907 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2914 /* This screws up perfectly good C programs with enums. FIXME. */
2915 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2916 if(TYPE_NFIELDS(type
) == 2 &&
2917 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2918 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2919 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2920 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2921 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2927 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2928 typedefs in every file (for int, long, etc):
2930 type = b <signed> <width>; <offset>; <nbits>
2931 signed = u or s. Possible c in addition to u or s (for char?).
2932 offset = offset from high order bit to start bit of type.
2933 width is # bytes in object of this type, nbits is # bits in type.
2935 The width/offset stuff appears to be for small objects stored in
2936 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2939 static struct type
*
2940 read_sun_builtin_type (pp
, typenums
, objfile
)
2943 struct objfile
*objfile
;
2958 return error_type (pp
);
2962 /* For some odd reason, all forms of char put a c here. This is strange
2963 because no other type has this honor. We can safely ignore this because
2964 we actually determine 'char'acterness by the number of bits specified in
2970 /* The first number appears to be the number of bytes occupied
2971 by this type, except that unsigned short is 4 instead of 2.
2972 Since this information is redundant with the third number,
2973 we will ignore it. */
2974 read_huge_number (pp
, ';', &nbits
);
2976 return error_type (pp
);
2978 /* The second number is always 0, so ignore it too. */
2979 read_huge_number (pp
, ';', &nbits
);
2981 return error_type (pp
);
2983 /* The third number is the number of bits for this type. */
2984 type_bits
= read_huge_number (pp
, 0, &nbits
);
2986 return error_type (pp
);
2989 /* FIXME. Here we should just be able to make a type of the right
2990 number of bits and signedness. FIXME. */
2992 if (type_bits
== TARGET_LONG_LONG_BIT
)
2993 return (lookup_fundamental_type (objfile
,
2994 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
2996 if (type_bits
== TARGET_INT_BIT
)
2998 /* FIXME -- the only way to distinguish `int' from `long'
2999 is to look at its name! */
3002 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
3003 return lookup_fundamental_type (objfile
, FT_LONG
);
3005 return lookup_fundamental_type (objfile
, FT_INTEGER
);
3009 if (long_kludge_name
3010 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
3011 long_kludge_name
[9] == 'l' /* long */)
3012 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
3013 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
3015 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
3019 if (type_bits
== TARGET_SHORT_BIT
)
3020 return (lookup_fundamental_type (objfile
,
3021 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
3023 if (type_bits
== TARGET_CHAR_BIT
)
3024 return (lookup_fundamental_type (objfile
,
3025 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
3028 return lookup_fundamental_type (objfile
, FT_VOID
);
3030 return error_type (pp
);
3032 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3033 type_bits
/ TARGET_CHAR_BIT
,
3034 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3039 static struct type
*
3040 read_sun_floating_type (pp
, typenums
, objfile
)
3043 struct objfile
*objfile
;
3049 /* The first number has more details about the type, for example
3051 details
= read_huge_number (pp
, ';', &nbits
);
3053 return error_type (pp
);
3055 /* The second number is the number of bytes occupied by this type */
3056 nbytes
= read_huge_number (pp
, ';', &nbits
);
3058 return error_type (pp
);
3060 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3061 || details
== NF_COMPLEX32
)
3062 /* This is a type we can't handle, but we do know the size.
3063 We also will be able to give it a name. */
3064 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3066 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3069 /* Read a number from the string pointed to by *PP.
3070 The value of *PP is advanced over the number.
3071 If END is nonzero, the character that ends the
3072 number must match END, or an error happens;
3073 and that character is skipped if it does match.
3074 If END is zero, *PP is left pointing to that character.
3076 If the number fits in a long, set *BITS to 0 and return the value.
3077 If not, set *BITS to be the number of bits in the number and return 0.
3079 If encounter garbage, set *BITS to -1 and return 0. */
3082 read_huge_number (pp
, end
, bits
)
3102 /* Leading zero means octal. GCC uses this to output values larger
3103 than an int (because that would be hard in decimal). */
3110 upper_limit
= LONG_MAX
/ radix
;
3111 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3113 if (n
<= upper_limit
)
3116 n
+= c
- '0'; /* FIXME this overflows anyway */
3121 /* This depends on large values being output in octal, which is
3128 /* Ignore leading zeroes. */
3132 else if (c
== '2' || c
== '3')
3158 /* Large decimal constants are an error (because it is hard to
3159 count how many bits are in them). */
3165 /* -0x7f is the same as 0x80. So deal with it by adding one to
3166 the number of bits. */
3178 /* It's *BITS which has the interesting information. */
3182 static struct type
*
3183 read_range_type (pp
, typenums
, objfile
)
3186 struct objfile
*objfile
;
3192 struct type
*result_type
;
3193 struct type
*index_type
;
3195 /* First comes a type we are a subrange of.
3196 In C it is usually 0, 1 or the type being defined. */
3197 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3198 not just a type number. */
3199 if (read_type_number (pp
, rangenums
) != 0)
3200 return error_type (pp
);
3201 self_subrange
= (rangenums
[0] == typenums
[0] &&
3202 rangenums
[1] == typenums
[1]);
3204 /* A semicolon should now follow; skip it. */
3208 /* The remaining two operands are usually lower and upper bounds
3209 of the range. But in some special cases they mean something else. */
3210 n2
= read_huge_number (pp
, ';', &n2bits
);
3211 n3
= read_huge_number (pp
, ';', &n3bits
);
3213 if (n2bits
== -1 || n3bits
== -1)
3214 return error_type (pp
);
3216 /* If limits are huge, must be large integral type. */
3217 if (n2bits
!= 0 || n3bits
!= 0)
3219 char got_signed
= 0;
3220 char got_unsigned
= 0;
3221 /* Number of bits in the type. */
3224 /* Range from 0 to <large number> is an unsigned large integral type. */
3225 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3230 /* Range from <large number> to <large number>-1 is a large signed
3232 else if (n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3238 if (got_signed
|| got_unsigned
)
3240 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3241 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3245 return error_type (pp
);
3248 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3249 if (self_subrange
&& n2
== 0 && n3
== 0)
3250 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3252 /* If n3 is zero and n2 is not, we want a floating type,
3253 and n2 is the width in bytes.
3255 Fortran programs appear to use this for complex types also,
3256 and they give no way to distinguish between double and single-complex!
3258 GDB does not have complex types.
3260 Just return the complex as a float of that size. It won't work right
3261 for the complex values, but at least it makes the file loadable.
3263 FIXME, we may be able to distinguish these by their names. FIXME. */
3265 if (n3
== 0 && n2
> 0)
3267 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3270 /* If the upper bound is -1, it must really be an unsigned int. */
3272 else if (n2
== 0 && n3
== -1)
3274 /* It is unsigned int or unsigned long. */
3275 /* GCC sometimes uses this for long long too. We could
3276 distinguish it by the name, but we don't. */
3277 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3278 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3281 /* Special case: char is defined (Who knows why) as a subrange of
3282 itself with range 0-127. */
3283 else if (self_subrange
&& n2
== 0 && n3
== 127)
3284 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3286 /* We used to do this only for subrange of self or subrange of int. */
3290 /* n3 actually gives the size. */
3291 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3294 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3296 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3298 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3299 "unsigned long", and we already checked for that,
3300 so don't need to test for it here. */
3302 /* I think this is for Convex "long long". Since I don't know whether
3303 Convex sets self_subrange, I also accept that particular size regardless
3304 of self_subrange. */
3305 else if (n3
== 0 && n2
< 0
3307 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3308 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3309 else if (n2
== -n3
-1)
3312 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3314 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3315 if (n3
== 0x7fffffff)
3316 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3319 /* We have a real range type on our hands. Allocate space and
3320 return a real pointer. */
3322 /* At this point I don't have the faintest idea how to deal with
3323 a self_subrange type; I'm going to assume that this is used
3324 as an idiom, and that all of them are special cases. So . . . */
3326 return error_type (pp
);
3328 index_type
= *dbx_lookup_type (rangenums
);
3329 if (index_type
== NULL
)
3331 /* Does this actually ever happen? Is that why we are worrying
3332 about dealing with it rather than just calling error_type? */
3334 static struct type
*range_type_index
;
3336 complain (&range_type_base_complaint
, rangenums
[1]);
3337 if (range_type_index
== NULL
)
3339 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3340 0, "range type index type", NULL
);
3341 index_type
= range_type_index
;
3344 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3345 return (result_type
);
3348 /* Read in an argument list. This is a list of types, separated by commas
3349 and terminated with END. Return the list of types read in, or (struct type
3350 **)-1 if there is an error. */
3352 static struct type
**
3353 read_args (pp
, end
, objfile
)
3356 struct objfile
*objfile
;
3358 /* FIXME! Remove this arbitrary limit! */
3359 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3365 /* Invalid argument list: no ','. */
3366 return (struct type
**)-1;
3368 STABS_CONTINUE (pp
);
3369 types
[n
++] = read_type (pp
, objfile
);
3371 (*pp
)++; /* get past `end' (the ':' character) */
3375 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3377 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3379 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3380 memset (rval
+ n
, 0, sizeof (struct type
*));
3384 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3386 memcpy (rval
, types
, n
* sizeof (struct type
*));
3390 /* Add a common block's start address to the offset of each symbol
3391 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3392 the common block name). */
3395 fix_common_block (sym
, valu
)
3399 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3400 for ( ; next
; next
= next
->next
)
3403 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3404 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3410 /* What about types defined as forward references inside of a small lexical
3412 /* Add a type to the list of undefined types to be checked through
3413 once this file has been read in. */
3416 add_undefined_type (type
)
3419 if (undef_types_length
== undef_types_allocated
)
3421 undef_types_allocated
*= 2;
3422 undef_types
= (struct type
**)
3423 xrealloc ((char *) undef_types
,
3424 undef_types_allocated
* sizeof (struct type
*));
3426 undef_types
[undef_types_length
++] = type
;
3429 /* Go through each undefined type, see if it's still undefined, and fix it
3430 up if possible. We have two kinds of undefined types:
3432 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3433 Fix: update array length using the element bounds
3434 and the target type's length.
3435 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3436 yet defined at the time a pointer to it was made.
3437 Fix: Do a full lookup on the struct/union tag. */
3439 cleanup_undefined_types ()
3443 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3445 switch (TYPE_CODE (*type
))
3448 case TYPE_CODE_STRUCT
:
3449 case TYPE_CODE_UNION
:
3450 case TYPE_CODE_ENUM
:
3452 /* Check if it has been defined since. */
3453 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3455 struct pending
*ppt
;
3457 /* Name of the type, without "struct" or "union" */
3458 char *typename
= TYPE_TAG_NAME (*type
);
3460 if (typename
== NULL
)
3462 static struct complaint msg
= {"need a type name", 0, 0};
3466 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3468 for (i
= 0; i
< ppt
->nsyms
; i
++)
3470 struct symbol
*sym
= ppt
->symbol
[i
];
3472 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3473 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3474 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3476 && STREQ (SYMBOL_NAME (sym
), typename
))
3478 memcpy (*type
, SYMBOL_TYPE (sym
),
3479 sizeof (struct type
));
3487 case TYPE_CODE_ARRAY
:
3489 struct type
*range_type
;
3492 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3494 if (TYPE_NFIELDS (*type
) != 1)
3496 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3497 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3500 /* Now recompute the length of the array type, based on its
3501 number of elements and the target type's length. */
3502 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3503 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3504 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3505 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3512 static struct complaint msg
= {"\
3513 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3514 complain (&msg
, TYPE_CODE (*type
));
3519 undef_types_length
= 0;
3522 /* Scan through all of the global symbols defined in the object file,
3523 assigning values to the debugging symbols that need to be assigned
3524 to. Get these symbols from the minimal symbol table. */
3527 scan_file_globals (objfile
)
3528 struct objfile
*objfile
;
3531 struct minimal_symbol
*msymbol
;
3532 struct symbol
*sym
, *prev
;
3534 if (objfile
->msymbols
== 0) /* Beware the null file. */
3537 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3543 /* Get the hash index and check all the symbols
3544 under that hash index. */
3546 hash
= hashname (SYMBOL_NAME (msymbol
));
3548 for (sym
= global_sym_chain
[hash
]; sym
;)
3550 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3551 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3553 /* Splice this symbol out of the hash chain and
3554 assign the value we have to it. */
3557 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3561 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3564 /* Check to see whether we need to fix up a common block. */
3565 /* Note: this code might be executed several times for
3566 the same symbol if there are multiple references. */
3568 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3570 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3574 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3579 sym
= SYMBOL_VALUE_CHAIN (prev
);
3583 sym
= global_sym_chain
[hash
];
3589 sym
= SYMBOL_VALUE_CHAIN (sym
);
3595 /* Initialize anything that needs initializing when starting to read
3596 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3604 /* Initialize anything that needs initializing when a completely new
3605 symbol file is specified (not just adding some symbols from another
3606 file, e.g. a shared library). */
3609 stabsread_new_init ()
3611 /* Empty the hash table of global syms looking for values. */
3612 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3615 /* Initialize anything that needs initializing at the same time as
3616 start_symtab() is called. */
3620 global_stabs
= NULL
; /* AIX COFF */
3621 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3622 n_this_object_header_files
= 1;
3623 type_vector_length
= 0;
3624 type_vector
= (struct type
**) 0;
3627 /* Call after end_symtab() */
3633 free ((char *) type_vector
);
3636 type_vector_length
= 0;
3637 previous_stab_code
= 0;
3641 finish_global_stabs (objfile
)
3642 struct objfile
*objfile
;
3646 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3647 free ((PTR
) global_stabs
);
3648 global_stabs
= NULL
;
3652 /* Initializer for this module */
3655 _initialize_stabsread ()
3657 undef_types_allocated
= 20;
3658 undef_types_length
= 0;
3659 undef_types
= (struct type
**)
3660 xmalloc (undef_types_allocated
* sizeof (struct type
*));