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')
1225 if (read_type_number (pp
, typenums
) != 0)
1226 return error_type (pp
);
1228 /* Type is not being defined here. Either it already exists,
1229 or this is a forward reference to it. dbx_alloc_type handles
1232 return dbx_alloc_type (typenums
, objfile
);
1234 /* Type is being defined here. */
1241 /* It might be a type attribute or a member type. */
1242 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1247 /* Type attributes. */
1250 /* Skip to the semicolon. */
1251 while (*p
!= ';' && *p
!= '\0')
1255 return error_type (pp
);
1257 /* Skip the semicolon. */
1263 type_size
= atoi (attr
+ 1);
1268 /* Ignore unrecognized type attributes, so future compilers
1269 can invent new ones. */
1274 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1279 /* 'typenums=' not present, type is anonymous. Read and return
1280 the definition, but don't put it in the type vector. */
1281 typenums
[0] = typenums
[1] = -1;
1285 type_descriptor
= (*pp
)[-1];
1286 switch (type_descriptor
)
1290 enum type_code code
;
1292 /* Used to index through file_symbols. */
1293 struct pending
*ppt
;
1296 /* Name including "struct", etc. */
1302 /* Set the type code according to the following letter. */
1306 code
= TYPE_CODE_STRUCT
;
1309 code
= TYPE_CODE_UNION
;
1312 code
= TYPE_CODE_ENUM
;
1315 return error_type (pp
);
1318 to
= type_name
= (char *)
1319 obstack_alloc (&objfile
-> type_obstack
,
1320 (((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1322 /* Copy the name. */
1324 while ((*to
++ = *from
++) != ':')
1328 /* Set the pointer ahead of the name which we just read. */
1332 /* Now check to see whether the type has already been declared. */
1333 /* This is necessary at least in the case where the
1334 program says something like
1336 The compiler puts out a cross-reference; we better find
1337 set the length of the structure correctly so we can
1338 set the length of the array. */
1339 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1340 for (i
= 0; i
< ppt
->nsyms
; i
++)
1342 struct symbol
*sym
= ppt
->symbol
[i
];
1344 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1345 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1346 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1347 && STREQ (SYMBOL_NAME (sym
), type_name
))
1349 obstack_free (&objfile
-> type_obstack
, type_name
);
1350 type
= SYMBOL_TYPE (sym
);
1355 /* Didn't find the type to which this refers, so we must
1356 be dealing with a forward reference. Allocate a type
1357 structure for it, and keep track of it so we can
1358 fill in the rest of the fields when we get the full
1360 type
= dbx_alloc_type (typenums
, objfile
);
1361 TYPE_CODE (type
) = code
;
1362 TYPE_TAG_NAME (type
) = type_name
;
1363 INIT_CPLUS_SPECIFIC(type
);
1364 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1366 add_undefined_type (type
);
1370 case '-': /* RS/6000 built-in type */
1384 if (read_type_number (pp
, xtypenums
) != 0)
1385 return error_type (pp
);
1387 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1388 /* It's being defined as itself. That means it is "void". */
1389 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1392 struct type
*xtype
= *dbx_lookup_type (xtypenums
);
1394 /* This can happen if we had '-' followed by a garbage character,
1397 return error_type (pp
);
1399 /* The type is being defined to another type. So we copy the type.
1400 This loses if we copy a C++ class and so we lose track of how
1401 the names are mangled (but g++ doesn't output stabs like this
1404 type
= alloc_type (objfile
);
1405 memcpy (type
, xtype
, sizeof (struct type
));
1407 /* The idea behind clearing the names is that the only purpose
1408 for defining a type to another type is so that the name of
1409 one can be different. So we probably don't need to worry much
1410 about the case where the compiler doesn't give a name to the
1412 TYPE_NAME (type
) = NULL
;
1413 TYPE_TAG_NAME (type
) = NULL
;
1415 if (typenums
[0] != -1)
1416 *dbx_lookup_type (typenums
) = type
;
1419 /* In the following types, we must be sure to overwrite any existing
1420 type that the typenums refer to, rather than allocating a new one
1421 and making the typenums point to the new one. This is because there
1422 may already be pointers to the existing type (if it had been
1423 forward-referenced), and we must change it to a pointer, function,
1424 reference, or whatever, *in-place*. */
1427 type1
= read_type (pp
, objfile
);
1428 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1431 case '&': /* Reference to another type */
1432 type1
= read_type (pp
, objfile
);
1433 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1436 case 'f': /* Function returning another type */
1437 type1
= read_type (pp
, objfile
);
1438 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1441 case 'k': /* Const qualifier on some type (Sun) */
1442 type
= read_type (pp
, objfile
);
1443 /* FIXME! For now, we ignore const and volatile qualifiers. */
1446 case 'B': /* Volatile qual on some type (Sun) */
1447 type
= read_type (pp
, objfile
);
1448 /* FIXME! For now, we ignore const and volatile qualifiers. */
1451 /* FIXME -- we should be doing smash_to_XXX types here. */
1452 case '@': /* Member (class & variable) type */
1454 struct type
*domain
= read_type (pp
, objfile
);
1455 struct type
*memtype
;
1458 /* Invalid member type data format. */
1459 return error_type (pp
);
1462 memtype
= read_type (pp
, objfile
);
1463 type
= dbx_alloc_type (typenums
, objfile
);
1464 smash_to_member_type (type
, domain
, memtype
);
1468 case '#': /* Method (class & fn) type */
1469 if ((*pp
)[0] == '#')
1471 /* We'll get the parameter types from the name. */
1472 struct type
*return_type
;
1475 return_type
= read_type (pp
, objfile
);
1476 if (*(*pp
)++ != ';')
1477 complain (&invalid_member_complaint
, symnum
);
1478 type
= allocate_stub_method (return_type
);
1479 if (typenums
[0] != -1)
1480 *dbx_lookup_type (typenums
) = type
;
1484 struct type
*domain
= read_type (pp
, objfile
);
1485 struct type
*return_type
;
1489 /* Invalid member type data format. */
1490 return error_type (pp
);
1494 return_type
= read_type (pp
, objfile
);
1495 args
= read_args (pp
, ';', objfile
);
1496 type
= dbx_alloc_type (typenums
, objfile
);
1497 smash_to_method_type (type
, domain
, return_type
, args
);
1501 case 'r': /* Range type */
1502 type
= read_range_type (pp
, typenums
, objfile
);
1503 if (typenums
[0] != -1)
1504 *dbx_lookup_type (typenums
) = type
;
1507 case 'b': /* Sun ACC builtin int type */
1508 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1509 if (typenums
[0] != -1)
1510 *dbx_lookup_type (typenums
) = type
;
1513 case 'R': /* Sun ACC builtin float type */
1514 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1515 if (typenums
[0] != -1)
1516 *dbx_lookup_type (typenums
) = type
;
1519 case 'e': /* Enumeration type */
1520 type
= dbx_alloc_type (typenums
, objfile
);
1521 type
= read_enum_type (pp
, type
, objfile
);
1522 if (typenums
[0] != -1)
1523 *dbx_lookup_type (typenums
) = type
;
1526 case 's': /* Struct type */
1527 case 'u': /* Union type */
1528 type
= dbx_alloc_type (typenums
, objfile
);
1529 if (!TYPE_NAME (type
))
1531 TYPE_NAME (type
) = type_synonym_name
;
1533 type_synonym_name
= NULL
;
1534 switch (type_descriptor
)
1537 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1540 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1543 type
= read_struct_type (pp
, type
, objfile
);
1546 case 'a': /* Array type */
1548 return error_type (pp
);
1551 type
= dbx_alloc_type (typenums
, objfile
);
1552 type
= read_array_type (pp
, type
, objfile
);
1556 --*pp
; /* Go back to the symbol in error */
1557 /* Particularly important if it was \0! */
1558 return error_type (pp
);
1563 warning ("GDB internal error, type is NULL in stabsread.c\n");
1564 return error_type (pp
);
1567 /* Size specified in a type attribute overrides any other size. */
1568 if (type_size
!= -1)
1569 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1574 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1575 Return the proper type node for a given builtin type number. */
1577 static struct type
*
1578 rs6000_builtin_type (typenum
)
1581 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1582 #define NUMBER_RECOGNIZED 30
1583 /* This includes an empty slot for type number -0. */
1584 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1585 struct type
*rettype
= NULL
;
1587 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1589 complain (&rs6000_builtin_complaint
, typenum
);
1590 return builtin_type_error
;
1592 if (negative_types
[-typenum
] != NULL
)
1593 return negative_types
[-typenum
];
1595 #if TARGET_CHAR_BIT != 8
1596 #error This code wrong for TARGET_CHAR_BIT not 8
1597 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1598 that if that ever becomes not true, the correct fix will be to
1599 make the size in the struct type to be in bits, not in units of
1606 /* The size of this and all the other types are fixed, defined
1607 by the debugging format. If there is a type called "int" which
1608 is other than 32 bits, then it should use a new negative type
1609 number (or avoid negative type numbers for that case).
1610 See stabs.texinfo. */
1611 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1614 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1617 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1620 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1623 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1624 "unsigned char", NULL
);
1627 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1630 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1631 "unsigned short", NULL
);
1634 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1635 "unsigned int", NULL
);
1638 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1641 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1642 "unsigned long", NULL
);
1645 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1648 /* IEEE single precision (32 bit). */
1649 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1652 /* IEEE double precision (64 bit). */
1653 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1656 /* This is an IEEE double on the RS/6000, and different machines with
1657 different sizes for "long double" should use different negative
1658 type numbers. See stabs.texinfo. */
1659 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1662 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1665 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1668 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1671 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1674 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1677 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1681 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1685 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1689 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1693 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1697 /* Complex type consisting of two IEEE single precision values. */
1698 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1701 /* Complex type consisting of two IEEE double precision values. */
1702 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1705 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1708 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1711 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1714 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1717 negative_types
[-typenum
] = rettype
;
1721 /* This page contains subroutines of read_type. */
1723 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1724 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1725 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1727 /* Read member function stabs info for C++ classes. The form of each member
1730 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1732 An example with two member functions is:
1734 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1736 For the case of overloaded operators, the format is op$::*.funcs, where
1737 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1738 name (such as `+=') and `.' marks the end of the operator name.
1740 Returns 1 for success, 0 for failure. */
1743 read_member_functions (fip
, pp
, type
, objfile
)
1744 struct field_info
*fip
;
1747 struct objfile
*objfile
;
1751 /* Total number of member functions defined in this class. If the class
1752 defines two `f' functions, and one `g' function, then this will have
1754 int total_length
= 0;
1758 struct next_fnfield
*next
;
1759 struct fn_field fn_field
;
1761 struct type
*look_ahead_type
;
1762 struct next_fnfieldlist
*new_fnlist
;
1763 struct next_fnfield
*new_sublist
;
1767 /* Process each list until we find something that is not a member function
1768 or find the end of the functions. */
1772 /* We should be positioned at the start of the function name.
1773 Scan forward to find the first ':' and if it is not the
1774 first of a "::" delimiter, then this is not a member function. */
1786 look_ahead_type
= NULL
;
1789 new_fnlist
= (struct next_fnfieldlist
*)
1790 xmalloc (sizeof (struct next_fnfieldlist
));
1791 make_cleanup (free
, new_fnlist
);
1792 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1794 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1796 /* This is a completely wierd case. In order to stuff in the
1797 names that might contain colons (the usual name delimiter),
1798 Mike Tiemann defined a different name format which is
1799 signalled if the identifier is "op$". In that case, the
1800 format is "op$::XXXX." where XXXX is the name. This is
1801 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1802 /* This lets the user type "break operator+".
1803 We could just put in "+" as the name, but that wouldn't
1805 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1806 char *o
= opname
+ 3;
1808 /* Skip past '::'. */
1811 STABS_CONTINUE (pp
);
1817 main_fn_name
= savestring (opname
, o
- opname
);
1823 main_fn_name
= savestring (*pp
, p
- *pp
);
1824 /* Skip past '::'. */
1827 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1832 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1833 make_cleanup (free
, new_sublist
);
1834 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1836 /* Check for and handle cretinous dbx symbol name continuation! */
1837 if (look_ahead_type
== NULL
)
1840 STABS_CONTINUE (pp
);
1842 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1845 /* Invalid symtab info for member function. */
1851 /* g++ version 1 kludge */
1852 new_sublist
-> fn_field
.type
= look_ahead_type
;
1853 look_ahead_type
= NULL
;
1863 /* If this is just a stub, then we don't have the real name here. */
1865 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1867 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1868 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1869 new_sublist
-> fn_field
.is_stub
= 1;
1871 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1874 /* Set this member function's visibility fields. */
1877 case VISIBILITY_PRIVATE
:
1878 new_sublist
-> fn_field
.is_private
= 1;
1880 case VISIBILITY_PROTECTED
:
1881 new_sublist
-> fn_field
.is_protected
= 1;
1885 STABS_CONTINUE (pp
);
1888 case 'A': /* Normal functions. */
1889 new_sublist
-> fn_field
.is_const
= 0;
1890 new_sublist
-> fn_field
.is_volatile
= 0;
1893 case 'B': /* `const' member functions. */
1894 new_sublist
-> fn_field
.is_const
= 1;
1895 new_sublist
-> fn_field
.is_volatile
= 0;
1898 case 'C': /* `volatile' member function. */
1899 new_sublist
-> fn_field
.is_const
= 0;
1900 new_sublist
-> fn_field
.is_volatile
= 1;
1903 case 'D': /* `const volatile' member function. */
1904 new_sublist
-> fn_field
.is_const
= 1;
1905 new_sublist
-> fn_field
.is_volatile
= 1;
1908 case '*': /* File compiled with g++ version 1 -- no info */
1913 complain (&const_vol_complaint
, **pp
);
1922 /* virtual member function, followed by index.
1923 The sign bit is set to distinguish pointers-to-methods
1924 from virtual function indicies. Since the array is
1925 in words, the quantity must be shifted left by 1
1926 on 16 bit machine, and by 2 on 32 bit machine, forcing
1927 the sign bit out, and usable as a valid index into
1928 the array. Remove the sign bit here. */
1929 new_sublist
-> fn_field
.voffset
=
1930 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1934 STABS_CONTINUE (pp
);
1935 if (**pp
== ';' || **pp
== '\0')
1937 /* Must be g++ version 1. */
1938 new_sublist
-> fn_field
.fcontext
= 0;
1942 /* Figure out from whence this virtual function came.
1943 It may belong to virtual function table of
1944 one of its baseclasses. */
1945 look_ahead_type
= read_type (pp
, objfile
);
1948 /* g++ version 1 overloaded methods. */
1952 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1961 look_ahead_type
= NULL
;
1967 /* static member function. */
1968 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1969 if (strncmp (new_sublist
-> fn_field
.physname
,
1970 main_fn_name
, strlen (main_fn_name
)))
1972 new_sublist
-> fn_field
.is_stub
= 1;
1978 complain (&member_fn_complaint
, (*pp
)[-1]);
1979 /* Fall through into normal member function. */
1982 /* normal member function. */
1983 new_sublist
-> fn_field
.voffset
= 0;
1984 new_sublist
-> fn_field
.fcontext
= 0;
1988 new_sublist
-> next
= sublist
;
1989 sublist
= new_sublist
;
1991 STABS_CONTINUE (pp
);
1993 while (**pp
!= ';' && **pp
!= '\0');
1997 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1998 obstack_alloc (&objfile
-> type_obstack
,
1999 sizeof (struct fn_field
) * length
);
2000 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2001 sizeof (struct fn_field
) * length
);
2002 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2004 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2007 new_fnlist
-> fn_fieldlist
.length
= length
;
2008 new_fnlist
-> next
= fip
-> fnlist
;
2009 fip
-> fnlist
= new_fnlist
;
2011 total_length
+= length
;
2012 STABS_CONTINUE (pp
);
2017 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2018 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2019 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2020 memset (TYPE_FN_FIELDLISTS (type
), 0,
2021 sizeof (struct fn_fieldlist
) * nfn_fields
);
2022 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2023 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2029 /* Special GNU C++ name.
2031 Returns 1 for success, 0 for failure. "failure" means that we can't
2032 keep parsing and it's time for error_type(). */
2035 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2036 struct field_info
*fip
;
2039 struct objfile
*objfile
;
2044 struct type
*context
;
2054 /* At this point, *pp points to something like "22:23=*22...",
2055 where the type number before the ':' is the "context" and
2056 everything after is a regular type definition. Lookup the
2057 type, find it's name, and construct the field name. */
2059 context
= read_type (pp
, objfile
);
2063 case 'f': /* $vf -- a virtual function table pointer */
2064 fip
->list
->field
.name
=
2065 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2068 case 'b': /* $vb -- a virtual bsomethingorother */
2069 name
= type_name_no_tag (context
);
2072 complain (&invalid_cpp_type_complaint
, symnum
);
2075 fip
->list
->field
.name
=
2076 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2080 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2081 fip
->list
->field
.name
=
2082 obconcat (&objfile
->type_obstack
,
2083 "INVALID_CPLUSPLUS_ABBREV", "", "");
2087 /* At this point, *pp points to the ':'. Skip it and read the
2093 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2096 fip
->list
->field
.type
= read_type (pp
, objfile
);
2098 (*pp
)++; /* Skip the comma. */
2104 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2108 /* This field is unpacked. */
2109 fip
->list
->field
.bitsize
= 0;
2110 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2114 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2115 /* We have no idea what syntax an unrecognized abbrev would have, so
2116 better return 0. If we returned 1, we would need to at least advance
2117 *pp to avoid an infinite loop. */
2124 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2125 struct field_info
*fip
;
2129 struct objfile
*objfile
;
2131 fip
-> list
-> field
.name
=
2132 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2135 /* This means we have a visibility for a field coming. */
2139 fip
-> list
-> visibility
= *(*pp
)++;
2140 switch (fip
-> list
-> visibility
)
2142 case VISIBILITY_PRIVATE
:
2143 case VISIBILITY_PROTECTED
:
2146 case VISIBILITY_PUBLIC
:
2151 /* Unknown visibility specifier. */
2152 complain (&stabs_general_complaint
,
2153 "unknown visibility specifier");
2160 /* normal dbx-style format, no explicit visibility */
2161 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2164 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2169 /* Possible future hook for nested types. */
2172 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2178 /* Static class member. */
2179 fip
-> list
-> field
.bitpos
= (long) -1;
2185 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2189 else if (**pp
!= ',')
2191 /* Bad structure-type format. */
2192 complain (&stabs_general_complaint
, "bad structure-type format");
2196 (*pp
)++; /* Skip the comma. */
2200 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2203 complain (&stabs_general_complaint
, "bad structure-type format");
2206 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2209 complain (&stabs_general_complaint
, "bad structure-type format");
2214 /* FIXME-tiemann: Can't the compiler put out something which
2215 lets us distinguish these? (or maybe just not put out anything
2216 for the field). What is the story here? What does the compiler
2217 really do? Also, patch gdb.texinfo for this case; I document
2218 it as a possible problem there. Search for "DBX-style". */
2220 /* This is wrong because this is identical to the symbols
2221 produced for GCC 0-size arrays. For example:
2226 The code which dumped core in such circumstances should be
2227 fixed not to dump core. */
2229 /* g++ -g0 can put out bitpos & bitsize zero for a static
2230 field. This does not give us any way of getting its
2231 class, so we can't know its name. But we can just
2232 ignore the field so we don't dump core and other nasty
2234 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2236 complain (&dbx_class_complaint
);
2237 /* Ignore this field. */
2238 fip
-> list
= fip
-> list
-> next
;
2243 /* Detect an unpacked field and mark it as such.
2244 dbx gives a bit size for all fields.
2245 Note that forward refs cannot be packed,
2246 and treat enums as if they had the width of ints. */
2248 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2249 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2251 fip
-> list
-> field
.bitsize
= 0;
2253 if ((fip
-> list
-> field
.bitsize
2254 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2255 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2256 && (fip
-> list
-> field
.bitsize
2261 fip
-> list
-> field
.bitpos
% 8 == 0)
2263 fip
-> list
-> field
.bitsize
= 0;
2269 /* Read struct or class data fields. They have the form:
2271 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2273 At the end, we see a semicolon instead of a field.
2275 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2278 The optional VISIBILITY is one of:
2280 '/0' (VISIBILITY_PRIVATE)
2281 '/1' (VISIBILITY_PROTECTED)
2282 '/2' (VISIBILITY_PUBLIC)
2284 or nothing, for C style fields with public visibility.
2286 Returns 1 for success, 0 for failure. */
2289 read_struct_fields (fip
, pp
, type
, objfile
)
2290 struct field_info
*fip
;
2293 struct objfile
*objfile
;
2296 struct nextfield
*new;
2298 /* We better set p right now, in case there are no fields at all... */
2302 /* Read each data member type until we find the terminating ';' at the end of
2303 the data member list, or break for some other reason such as finding the
2304 start of the member function list. */
2308 STABS_CONTINUE (pp
);
2309 /* Get space to record the next field's data. */
2310 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2311 make_cleanup (free
, new);
2312 memset (new, 0, sizeof (struct nextfield
));
2313 new -> next
= fip
-> list
;
2316 /* Get the field name. */
2318 /* If is starts with CPLUS_MARKER it is a special abbreviation, unless
2319 the CPLUS_MARKER is followed by an underscore, in which case it is
2320 just the name of an anonymous type, which we should handle like any
2322 if (*p
== CPLUS_MARKER
&& p
[1] != '_')
2324 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2329 /* Look for the ':' that separates the field name from the field
2330 values. Data members are delimited by a single ':', while member
2331 functions are delimited by a pair of ':'s. When we hit the member
2332 functions (if any), terminate scan loop and return. */
2334 while (*p
!= ':' && *p
!= '\0')
2341 /* Check to see if we have hit the member functions yet. */
2346 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2350 /* chill the list of fields: the last entry (at the head) is a
2351 partially constructed entry which we now scrub. */
2352 fip
-> list
= fip
-> list
-> next
;
2357 /* The stabs for C++ derived classes contain baseclass information which
2358 is marked by a '!' character after the total size. This function is
2359 called when we encounter the baseclass marker, and slurps up all the
2360 baseclass information.
2362 Immediately following the '!' marker is the number of base classes that
2363 the class is derived from, followed by information for each base class.
2364 For each base class, there are two visibility specifiers, a bit offset
2365 to the base class information within the derived class, a reference to
2366 the type for the base class, and a terminating semicolon.
2368 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2370 Baseclass information marker __________________|| | | | | | |
2371 Number of baseclasses __________________________| | | | | | |
2372 Visibility specifiers (2) ________________________| | | | | |
2373 Offset in bits from start of class _________________| | | | |
2374 Type number for base class ___________________________| | | |
2375 Visibility specifiers (2) _______________________________| | |
2376 Offset in bits from start of class ________________________| |
2377 Type number of base class ____________________________________|
2379 Return 1 for success, 0 for (error-type-inducing) failure. */
2382 read_baseclasses (fip
, pp
, type
, objfile
)
2383 struct field_info
*fip
;
2386 struct objfile
*objfile
;
2389 struct nextfield
*new;
2397 /* Skip the '!' baseclass information marker. */
2401 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2404 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2410 /* Some stupid compilers have trouble with the following, so break
2411 it up into simpler expressions. */
2412 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2413 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2416 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2419 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2420 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2424 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2426 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2428 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2429 make_cleanup (free
, new);
2430 memset (new, 0, sizeof (struct nextfield
));
2431 new -> next
= fip
-> list
;
2433 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2435 STABS_CONTINUE (pp
);
2439 /* Nothing to do. */
2442 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2445 /* Bad visibility format. */
2449 new -> visibility
= *(*pp
)++;
2450 switch (new -> visibility
)
2452 case VISIBILITY_PRIVATE
:
2453 case VISIBILITY_PROTECTED
:
2454 case VISIBILITY_PUBLIC
:
2457 /* Bad visibility format. */
2464 /* The remaining value is the bit offset of the portion of the object
2465 corresponding to this baseclass. Always zero in the absence of
2466 multiple inheritance. */
2468 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2473 /* The last piece of baseclass information is the type of the
2474 base class. Read it, and remember it's type name as this
2477 new -> field
.type
= read_type (pp
, objfile
);
2478 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2480 /* skip trailing ';' and bump count of number of fields seen */
2489 /* The tail end of stabs for C++ classes that contain a virtual function
2490 pointer contains a tilde, a %, and a type number.
2491 The type number refers to the base class (possibly this class itself) which
2492 contains the vtable pointer for the current class.
2494 This function is called when we have parsed all the method declarations,
2495 so we can look for the vptr base class info. */
2498 read_tilde_fields (fip
, pp
, type
, objfile
)
2499 struct field_info
*fip
;
2502 struct objfile
*objfile
;
2506 STABS_CONTINUE (pp
);
2508 /* If we are positioned at a ';', then skip it. */
2518 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2520 /* Obsolete flags that used to indicate the presence
2521 of constructors and/or destructors. */
2525 /* Read either a '%' or the final ';'. */
2526 if (*(*pp
)++ == '%')
2528 /* The next number is the type number of the base class
2529 (possibly our own class) which supplies the vtable for
2530 this class. Parse it out, and search that class to find
2531 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2532 and TYPE_VPTR_FIELDNO. */
2537 t
= read_type (pp
, objfile
);
2539 while (*p
!= '\0' && *p
!= ';')
2545 /* Premature end of symbol. */
2549 TYPE_VPTR_BASETYPE (type
) = t
;
2550 if (type
== t
) /* Our own class provides vtbl ptr */
2552 for (i
= TYPE_NFIELDS (t
) - 1;
2553 i
>= TYPE_N_BASECLASSES (t
);
2556 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2557 sizeof (vptr_name
) - 1))
2559 TYPE_VPTR_FIELDNO (type
) = i
;
2563 /* Virtual function table field not found. */
2564 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2569 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2580 attach_fn_fields_to_type (fip
, type
)
2581 struct field_info
*fip
;
2582 register struct type
*type
;
2586 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2588 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2590 /* @@ Memory leak on objfile -> type_obstack? */
2593 TYPE_NFN_FIELDS_TOTAL (type
) +=
2594 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2597 for (n
= TYPE_NFN_FIELDS (type
);
2598 fip
-> fnlist
!= NULL
;
2599 fip
-> fnlist
= fip
-> fnlist
-> next
)
2601 --n
; /* Circumvent Sun3 compiler bug */
2602 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2607 /* Create the vector of fields, and record how big it is.
2608 We need this info to record proper virtual function table information
2609 for this class's virtual functions. */
2612 attach_fields_to_type (fip
, type
, objfile
)
2613 struct field_info
*fip
;
2614 register struct type
*type
;
2615 struct objfile
*objfile
;
2617 register int nfields
= 0;
2618 register int non_public_fields
= 0;
2619 register struct nextfield
*scan
;
2621 /* Count up the number of fields that we have, as well as taking note of
2622 whether or not there are any non-public fields, which requires us to
2623 allocate and build the private_field_bits and protected_field_bits
2626 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2629 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2631 non_public_fields
++;
2635 /* Now we know how many fields there are, and whether or not there are any
2636 non-public fields. Record the field count, allocate space for the
2637 array of fields, and create blank visibility bitfields if necessary. */
2639 TYPE_NFIELDS (type
) = nfields
;
2640 TYPE_FIELDS (type
) = (struct field
*)
2641 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2642 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2644 if (non_public_fields
)
2646 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2648 TYPE_FIELD_PRIVATE_BITS (type
) =
2649 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2650 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2652 TYPE_FIELD_PROTECTED_BITS (type
) =
2653 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2654 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2657 /* Copy the saved-up fields into the field vector. Start from the head
2658 of the list, adding to the tail of the field array, so that they end
2659 up in the same order in the array in which they were added to the list. */
2661 while (nfields
-- > 0)
2663 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2664 switch (fip
-> list
-> visibility
)
2666 case VISIBILITY_PRIVATE
:
2667 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2670 case VISIBILITY_PROTECTED
:
2671 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2674 case VISIBILITY_PUBLIC
:
2678 /* Should warn about this unknown visibility? */
2681 fip
-> list
= fip
-> list
-> next
;
2686 /* Read the description of a structure (or union type) and return an object
2687 describing the type.
2689 PP points to a character pointer that points to the next unconsumed token
2690 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2691 *PP will point to "4a:1,0,32;;".
2693 TYPE points to an incomplete type that needs to be filled in.
2695 OBJFILE points to the current objfile from which the stabs information is
2696 being read. (Note that it is redundant in that TYPE also contains a pointer
2697 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2700 static struct type
*
2701 read_struct_type (pp
, type
, objfile
)
2704 struct objfile
*objfile
;
2706 struct cleanup
*back_to
;
2707 struct field_info fi
;
2712 back_to
= make_cleanup (null_cleanup
, 0);
2714 INIT_CPLUS_SPECIFIC (type
);
2715 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2717 /* First comes the total size in bytes. */
2721 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2723 return error_type (pp
);
2726 /* Now read the baseclasses, if any, read the regular C struct or C++
2727 class member fields, attach the fields to the type, read the C++
2728 member functions, attach them to the type, and then read any tilde
2729 field (baseclass specifier for the class holding the main vtable). */
2731 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2732 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2733 || !attach_fields_to_type (&fi
, type
, objfile
)
2734 || !read_member_functions (&fi
, pp
, type
, objfile
)
2735 || !attach_fn_fields_to_type (&fi
, type
)
2736 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2738 do_cleanups (back_to
);
2739 return (error_type (pp
));
2742 do_cleanups (back_to
);
2746 /* Read a definition of an array type,
2747 and create and return a suitable type object.
2748 Also creates a range type which represents the bounds of that
2751 static struct type
*
2752 read_array_type (pp
, type
, objfile
)
2754 register struct type
*type
;
2755 struct objfile
*objfile
;
2757 struct type
*index_type
, *element_type
, *range_type
;
2762 /* Format of an array type:
2763 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2766 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2767 for these, produce a type like float[][]. */
2769 index_type
= read_type (pp
, objfile
);
2771 /* Improper format of array type decl. */
2772 return error_type (pp
);
2775 if (!(**pp
>= '0' && **pp
<= '9'))
2780 lower
= read_huge_number (pp
, ';', &nbits
);
2782 return error_type (pp
);
2784 if (!(**pp
>= '0' && **pp
<= '9'))
2789 upper
= read_huge_number (pp
, ';', &nbits
);
2791 return error_type (pp
);
2793 element_type
= read_type (pp
, objfile
);
2802 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2803 type
= create_array_type (type
, element_type
, range_type
);
2805 /* If we have an array whose element type is not yet known, but whose
2806 bounds *are* known, record it to be adjusted at the end of the file. */
2808 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2810 add_undefined_type (type
);
2817 /* Read a definition of an enumeration type,
2818 and create and return a suitable type object.
2819 Also defines the symbols that represent the values of the type. */
2821 static struct type
*
2822 read_enum_type (pp
, type
, objfile
)
2824 register struct type
*type
;
2825 struct objfile
*objfile
;
2830 register struct symbol
*sym
;
2832 struct pending
**symlist
;
2833 struct pending
*osyms
, *syms
;
2837 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2838 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2839 to do? For now, force all enum values to file scope. */
2840 if (within_function
)
2841 symlist
= &local_symbols
;
2844 symlist
= &file_symbols
;
2846 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2848 /* Read the value-names and their values.
2849 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2850 A semicolon or comma instead of a NAME means the end. */
2851 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2854 STABS_CONTINUE (pp
);
2856 while (*p
!= ':') p
++;
2857 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2859 n
= read_huge_number (pp
, ',', &nbits
);
2861 return error_type (pp
);
2863 sym
= (struct symbol
*)
2864 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2865 memset (sym
, 0, sizeof (struct symbol
));
2866 SYMBOL_NAME (sym
) = name
;
2867 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2868 SYMBOL_CLASS (sym
) = LOC_CONST
;
2869 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2870 SYMBOL_VALUE (sym
) = n
;
2871 add_symbol_to_list (sym
, symlist
);
2876 (*pp
)++; /* Skip the semicolon. */
2878 /* Now fill in the fields of the type-structure. */
2880 TYPE_LENGTH (type
) = sizeof (int);
2881 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2882 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2883 TYPE_NFIELDS (type
) = nsyms
;
2884 TYPE_FIELDS (type
) = (struct field
*)
2885 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2886 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2888 /* Find the symbols for the values and put them into the type.
2889 The symbols can be found in the symlist that we put them on
2890 to cause them to be defined. osyms contains the old value
2891 of that symlist; everything up to there was defined by us. */
2892 /* Note that we preserve the order of the enum constants, so
2893 that in something like "enum {FOO, LAST_THING=FOO}" we print
2894 FOO, not LAST_THING. */
2896 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2901 for (; j
< syms
->nsyms
; j
++,n
++)
2903 struct symbol
*xsym
= syms
->symbol
[j
];
2904 SYMBOL_TYPE (xsym
) = type
;
2905 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2906 TYPE_FIELD_VALUE (type
, n
) = 0;
2907 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2908 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2915 /* This screws up perfectly good C programs with enums. FIXME. */
2916 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2917 if(TYPE_NFIELDS(type
) == 2 &&
2918 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2919 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2920 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2921 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2922 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2928 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2929 typedefs in every file (for int, long, etc):
2931 type = b <signed> <width>; <offset>; <nbits>
2932 signed = u or s. Possible c in addition to u or s (for char?).
2933 offset = offset from high order bit to start bit of type.
2934 width is # bytes in object of this type, nbits is # bits in type.
2936 The width/offset stuff appears to be for small objects stored in
2937 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2940 static struct type
*
2941 read_sun_builtin_type (pp
, typenums
, objfile
)
2944 struct objfile
*objfile
;
2959 return error_type (pp
);
2963 /* For some odd reason, all forms of char put a c here. This is strange
2964 because no other type has this honor. We can safely ignore this because
2965 we actually determine 'char'acterness by the number of bits specified in
2971 /* The first number appears to be the number of bytes occupied
2972 by this type, except that unsigned short is 4 instead of 2.
2973 Since this information is redundant with the third number,
2974 we will ignore it. */
2975 read_huge_number (pp
, ';', &nbits
);
2977 return error_type (pp
);
2979 /* The second number is always 0, so ignore it too. */
2980 read_huge_number (pp
, ';', &nbits
);
2982 return error_type (pp
);
2984 /* The third number is the number of bits for this type. */
2985 type_bits
= read_huge_number (pp
, 0, &nbits
);
2987 return error_type (pp
);
2990 /* FIXME. Here we should just be able to make a type of the right
2991 number of bits and signedness. FIXME. */
2993 if (type_bits
== TARGET_LONG_LONG_BIT
)
2994 return (lookup_fundamental_type (objfile
,
2995 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
2997 if (type_bits
== TARGET_INT_BIT
)
2999 /* FIXME -- the only way to distinguish `int' from `long'
3000 is to look at its name! */
3003 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
3004 return lookup_fundamental_type (objfile
, FT_LONG
);
3006 return lookup_fundamental_type (objfile
, FT_INTEGER
);
3010 if (long_kludge_name
3011 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
3012 long_kludge_name
[9] == 'l' /* long */)
3013 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
3014 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
3016 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
3020 if (type_bits
== TARGET_SHORT_BIT
)
3021 return (lookup_fundamental_type (objfile
,
3022 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
3024 if (type_bits
== TARGET_CHAR_BIT
)
3025 return (lookup_fundamental_type (objfile
,
3026 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
3029 return lookup_fundamental_type (objfile
, FT_VOID
);
3031 return error_type (pp
);
3033 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3034 type_bits
/ TARGET_CHAR_BIT
,
3035 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3040 static struct type
*
3041 read_sun_floating_type (pp
, typenums
, objfile
)
3044 struct objfile
*objfile
;
3050 /* The first number has more details about the type, for example
3052 details
= read_huge_number (pp
, ';', &nbits
);
3054 return error_type (pp
);
3056 /* The second number is the number of bytes occupied by this type */
3057 nbytes
= read_huge_number (pp
, ';', &nbits
);
3059 return error_type (pp
);
3061 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3062 || details
== NF_COMPLEX32
)
3063 /* This is a type we can't handle, but we do know the size.
3064 We also will be able to give it a name. */
3065 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3067 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3070 /* Read a number from the string pointed to by *PP.
3071 The value of *PP is advanced over the number.
3072 If END is nonzero, the character that ends the
3073 number must match END, or an error happens;
3074 and that character is skipped if it does match.
3075 If END is zero, *PP is left pointing to that character.
3077 If the number fits in a long, set *BITS to 0 and return the value.
3078 If not, set *BITS to be the number of bits in the number and return 0.
3080 If encounter garbage, set *BITS to -1 and return 0. */
3083 read_huge_number (pp
, end
, bits
)
3103 /* Leading zero means octal. GCC uses this to output values larger
3104 than an int (because that would be hard in decimal). */
3111 upper_limit
= LONG_MAX
/ radix
;
3112 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3114 if (n
<= upper_limit
)
3117 n
+= c
- '0'; /* FIXME this overflows anyway */
3122 /* This depends on large values being output in octal, which is
3129 /* Ignore leading zeroes. */
3133 else if (c
== '2' || c
== '3')
3159 /* Large decimal constants are an error (because it is hard to
3160 count how many bits are in them). */
3166 /* -0x7f is the same as 0x80. So deal with it by adding one to
3167 the number of bits. */
3179 /* It's *BITS which has the interesting information. */
3183 static struct type
*
3184 read_range_type (pp
, typenums
, objfile
)
3187 struct objfile
*objfile
;
3193 struct type
*result_type
;
3194 struct type
*index_type
;
3196 /* First comes a type we are a subrange of.
3197 In C it is usually 0, 1 or the type being defined. */
3198 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3199 not just a type number. */
3200 if (read_type_number (pp
, rangenums
) != 0)
3201 return error_type (pp
);
3202 self_subrange
= (rangenums
[0] == typenums
[0] &&
3203 rangenums
[1] == typenums
[1]);
3205 /* A semicolon should now follow; skip it. */
3209 /* The remaining two operands are usually lower and upper bounds
3210 of the range. But in some special cases they mean something else. */
3211 n2
= read_huge_number (pp
, ';', &n2bits
);
3212 n3
= read_huge_number (pp
, ';', &n3bits
);
3214 if (n2bits
== -1 || n3bits
== -1)
3215 return error_type (pp
);
3217 /* If limits are huge, must be large integral type. */
3218 if (n2bits
!= 0 || n3bits
!= 0)
3220 char got_signed
= 0;
3221 char got_unsigned
= 0;
3222 /* Number of bits in the type. */
3225 /* Range from 0 to <large number> is an unsigned large integral type. */
3226 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3231 /* Range from <large number> to <large number>-1 is a large signed
3232 integral type. Take care of the case where <large number> doesn't
3233 fit in a long but <large number>-1 does. */
3234 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3235 || (n2bits
!= 0 && n3bits
== 0
3236 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3243 if (got_signed
|| got_unsigned
)
3245 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3246 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3250 return error_type (pp
);
3253 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3254 if (self_subrange
&& n2
== 0 && n3
== 0)
3255 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3257 /* If n3 is zero and n2 is not, we want a floating type,
3258 and n2 is the width in bytes.
3260 Fortran programs appear to use this for complex types also,
3261 and they give no way to distinguish between double and single-complex!
3263 GDB does not have complex types.
3265 Just return the complex as a float of that size. It won't work right
3266 for the complex values, but at least it makes the file loadable. */
3268 if (n3
== 0 && n2
> 0)
3270 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3273 /* If the upper bound is -1, it must really be an unsigned int. */
3275 else if (n2
== 0 && n3
== -1)
3277 /* It is unsigned int or unsigned long. */
3278 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3279 compatibility hack. */
3280 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3281 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3284 /* Special case: char is defined (Who knows why) as a subrange of
3285 itself with range 0-127. */
3286 else if (self_subrange
&& n2
== 0 && n3
== 127)
3287 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3289 /* We used to do this only for subrange of self or subrange of int. */
3293 /* n3 actually gives the size. */
3294 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3297 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3299 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3301 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3302 "unsigned long", and we already checked for that,
3303 so don't need to test for it here. */
3305 /* I think this is for Convex "long long". Since I don't know whether
3306 Convex sets self_subrange, I also accept that particular size regardless
3307 of self_subrange. */
3308 else if (n3
== 0 && n2
< 0
3310 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3311 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3312 else if (n2
== -n3
-1)
3315 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3317 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3318 if (n3
== 0x7fffffff)
3319 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3322 /* We have a real range type on our hands. Allocate space and
3323 return a real pointer. */
3325 /* At this point I don't have the faintest idea how to deal with
3326 a self_subrange type; I'm going to assume that this is used
3327 as an idiom, and that all of them are special cases. So . . . */
3329 return error_type (pp
);
3331 index_type
= *dbx_lookup_type (rangenums
);
3332 if (index_type
== NULL
)
3334 /* Does this actually ever happen? Is that why we are worrying
3335 about dealing with it rather than just calling error_type? */
3337 static struct type
*range_type_index
;
3339 complain (&range_type_base_complaint
, rangenums
[1]);
3340 if (range_type_index
== NULL
)
3342 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3343 0, "range type index type", NULL
);
3344 index_type
= range_type_index
;
3347 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3348 return (result_type
);
3351 /* Read in an argument list. This is a list of types, separated by commas
3352 and terminated with END. Return the list of types read in, or (struct type
3353 **)-1 if there is an error. */
3355 static struct type
**
3356 read_args (pp
, end
, objfile
)
3359 struct objfile
*objfile
;
3361 /* FIXME! Remove this arbitrary limit! */
3362 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3368 /* Invalid argument list: no ','. */
3369 return (struct type
**)-1;
3371 STABS_CONTINUE (pp
);
3372 types
[n
++] = read_type (pp
, objfile
);
3374 (*pp
)++; /* get past `end' (the ':' character) */
3378 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3380 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3382 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3383 memset (rval
+ n
, 0, sizeof (struct type
*));
3387 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3389 memcpy (rval
, types
, n
* sizeof (struct type
*));
3393 /* Common block handling. */
3395 /* List of symbols declared since the last BCOMM. This list is a tail
3396 of local_symbols. When ECOMM is seen, the symbols on the list
3397 are noted so their proper addresses can be filled in later,
3398 using the common block base address gotten from the assembler
3401 static struct pending
*common_block
;
3402 static int common_block_i
;
3404 /* Name of the current common block. We get it from the BCOMM instead of the
3405 ECOMM to match IBM documentation (even though IBM puts the name both places
3406 like everyone else). */
3407 static char *common_block_name
;
3409 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3410 to remain after this function returns. */
3413 common_block_start (name
, objfile
)
3415 struct objfile
*objfile
;
3417 if (common_block_name
!= NULL
)
3419 static struct complaint msg
= {
3420 "Invalid symbol data: common block within common block",
3424 common_block
= local_symbols
;
3425 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3426 common_block_name
= obsavestring (name
, strlen (name
),
3427 &objfile
-> symbol_obstack
);
3430 /* Process a N_ECOMM symbol. */
3433 common_block_end (objfile
)
3434 struct objfile
*objfile
;
3436 /* Symbols declared since the BCOMM are to have the common block
3437 start address added in when we know it. common_block and
3438 common_block_i point to the first symbol after the BCOMM in
3439 the local_symbols list; copy the list and hang it off the
3440 symbol for the common block name for later fixup. */
3443 struct pending
*new = 0;
3444 struct pending
*next
;
3447 if (common_block_name
== NULL
)
3449 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3454 sym
= (struct symbol
*)
3455 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3456 memset (sym
, 0, sizeof (struct symbol
));
3457 SYMBOL_NAME (sym
) = common_block_name
;
3458 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3460 /* Now we copy all the symbols which have been defined since the BCOMM. */
3462 /* Copy all the struct pendings before common_block. */
3463 for (next
= local_symbols
;
3464 next
!= NULL
&& next
!= common_block
;
3467 for (j
= 0; j
< next
->nsyms
; j
++)
3468 add_symbol_to_list (next
->symbol
[j
], &new);
3471 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3472 NULL, it means copy all the local symbols (which we already did
3475 if (common_block
!= NULL
)
3476 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3477 add_symbol_to_list (common_block
->symbol
[j
], &new);
3479 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long) new);
3481 /* Should we be putting local_symbols back to what it was?
3484 i
= hashname (SYMBOL_NAME (sym
));
3485 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3486 global_sym_chain
[i
] = sym
;
3487 common_block_name
= NULL
;
3490 /* Add a common block's start address to the offset of each symbol
3491 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3492 the common block name). */
3495 fix_common_block (sym
, valu
)
3499 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3500 for ( ; next
; next
= next
->next
)
3503 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3504 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3510 /* What about types defined as forward references inside of a small lexical
3512 /* Add a type to the list of undefined types to be checked through
3513 once this file has been read in. */
3516 add_undefined_type (type
)
3519 if (undef_types_length
== undef_types_allocated
)
3521 undef_types_allocated
*= 2;
3522 undef_types
= (struct type
**)
3523 xrealloc ((char *) undef_types
,
3524 undef_types_allocated
* sizeof (struct type
*));
3526 undef_types
[undef_types_length
++] = type
;
3529 /* Go through each undefined type, see if it's still undefined, and fix it
3530 up if possible. We have two kinds of undefined types:
3532 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3533 Fix: update array length using the element bounds
3534 and the target type's length.
3535 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3536 yet defined at the time a pointer to it was made.
3537 Fix: Do a full lookup on the struct/union tag. */
3539 cleanup_undefined_types ()
3543 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3545 switch (TYPE_CODE (*type
))
3548 case TYPE_CODE_STRUCT
:
3549 case TYPE_CODE_UNION
:
3550 case TYPE_CODE_ENUM
:
3552 /* Check if it has been defined since. */
3553 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3555 struct pending
*ppt
;
3557 /* Name of the type, without "struct" or "union" */
3558 char *typename
= TYPE_TAG_NAME (*type
);
3560 if (typename
== NULL
)
3562 static struct complaint msg
= {"need a type name", 0, 0};
3566 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3568 for (i
= 0; i
< ppt
->nsyms
; i
++)
3570 struct symbol
*sym
= ppt
->symbol
[i
];
3572 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3573 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3574 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3576 && STREQ (SYMBOL_NAME (sym
), typename
))
3578 memcpy (*type
, SYMBOL_TYPE (sym
),
3579 sizeof (struct type
));
3587 case TYPE_CODE_ARRAY
:
3589 struct type
*range_type
;
3592 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3594 if (TYPE_NFIELDS (*type
) != 1)
3596 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3597 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3600 /* Now recompute the length of the array type, based on its
3601 number of elements and the target type's length. */
3602 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3603 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3604 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3605 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3612 static struct complaint msg
= {"\
3613 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3614 complain (&msg
, TYPE_CODE (*type
));
3619 undef_types_length
= 0;
3622 /* Scan through all of the global symbols defined in the object file,
3623 assigning values to the debugging symbols that need to be assigned
3624 to. Get these symbols from the minimal symbol table. */
3627 scan_file_globals (objfile
)
3628 struct objfile
*objfile
;
3631 struct minimal_symbol
*msymbol
;
3632 struct symbol
*sym
, *prev
;
3634 if (objfile
->msymbols
== 0) /* Beware the null file. */
3637 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3643 /* Get the hash index and check all the symbols
3644 under that hash index. */
3646 hash
= hashname (SYMBOL_NAME (msymbol
));
3648 for (sym
= global_sym_chain
[hash
]; sym
;)
3650 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3651 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3653 /* Splice this symbol out of the hash chain and
3654 assign the value we have to it. */
3657 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3661 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3664 /* Check to see whether we need to fix up a common block. */
3665 /* Note: this code might be executed several times for
3666 the same symbol if there are multiple references. */
3668 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3670 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3674 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3679 sym
= SYMBOL_VALUE_CHAIN (prev
);
3683 sym
= global_sym_chain
[hash
];
3689 sym
= SYMBOL_VALUE_CHAIN (sym
);
3695 /* Initialize anything that needs initializing when starting to read
3696 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3704 /* Initialize anything that needs initializing when a completely new
3705 symbol file is specified (not just adding some symbols from another
3706 file, e.g. a shared library). */
3709 stabsread_new_init ()
3711 /* Empty the hash table of global syms looking for values. */
3712 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3715 /* Initialize anything that needs initializing at the same time as
3716 start_symtab() is called. */
3720 global_stabs
= NULL
; /* AIX COFF */
3721 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3722 n_this_object_header_files
= 1;
3723 type_vector_length
= 0;
3724 type_vector
= (struct type
**) 0;
3726 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3727 common_block_name
= NULL
;
3730 /* Call after end_symtab() */
3736 free ((char *) type_vector
);
3739 type_vector_length
= 0;
3740 previous_stab_code
= 0;
3744 finish_global_stabs (objfile
)
3745 struct objfile
*objfile
;
3749 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3750 free ((PTR
) global_stabs
);
3751 global_stabs
= NULL
;
3755 /* Initializer for this module */
3758 _initialize_stabsread ()
3760 undef_types_allocated
= 20;
3761 undef_types_length
= 0;
3762 undef_types
= (struct type
**)
3763 xmalloc (undef_types_allocated
* sizeof (struct type
*));