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 /* This is used by other symbol readers besides stabs, so for cleanliness
221 should probably be in buildsym.c. */
227 register char *p
= name
;
228 register int total
= p
[0];
243 /* Ensure result is positive. */
246 total
+= (1000 << 6);
248 return (total
% HASHSIZE
);
252 /* Look up a dbx type-number pair. Return the address of the slot
253 where the type for that number-pair is stored.
254 The number-pair is in TYPENUMS.
256 This can be used for finding the type associated with that pair
257 or for associating a new type with the pair. */
260 dbx_lookup_type (typenums
)
263 register int filenum
= typenums
[0];
264 register int index
= typenums
[1];
266 register int real_filenum
;
267 register struct header_file
*f
;
270 if (filenum
== -1) /* -1,-1 is for temporary types. */
273 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
275 static struct complaint msg
= {"\
276 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
278 complain (&msg
, filenum
, index
, symnum
);
286 /* Caller wants address of address of type. We think
287 that negative (rs6k builtin) types will never appear as
288 "lvalues", (nor should they), so we stuff the real type
289 pointer into a temp, and return its address. If referenced,
290 this will do the right thing. */
291 static struct type
*temp_type
;
293 temp_type
= rs6000_builtin_type(index
);
297 /* Type is defined outside of header files.
298 Find it in this object file's type vector. */
299 if (index
>= type_vector_length
)
301 old_len
= type_vector_length
;
304 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
305 type_vector
= (struct type
**)
306 malloc (type_vector_length
* sizeof (struct type
*));
308 while (index
>= type_vector_length
)
310 type_vector_length
*= 2;
312 type_vector
= (struct type
**)
313 xrealloc ((char *) type_vector
,
314 (type_vector_length
* sizeof (struct type
*)));
315 memset (&type_vector
[old_len
], 0,
316 (type_vector_length
- old_len
) * sizeof (struct type
*));
318 return (&type_vector
[index
]);
322 real_filenum
= this_object_header_files
[filenum
];
324 if (real_filenum
>= n_header_files
)
326 struct type
*temp_type
;
327 struct type
**temp_type_p
;
329 warning ("GDB internal error: bad real_filenum");
332 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
333 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
334 *temp_type_p
= temp_type
;
338 f
= &header_files
[real_filenum
];
340 f_orig_length
= f
->length
;
341 if (index
>= f_orig_length
)
343 while (index
>= f
->length
)
347 f
->vector
= (struct type
**)
348 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
349 memset (&f
->vector
[f_orig_length
], 0,
350 (f
->length
- f_orig_length
) * sizeof (struct type
*));
352 return (&f
->vector
[index
]);
356 /* Make sure there is a type allocated for type numbers TYPENUMS
357 and return the type object.
358 This can create an empty (zeroed) type object.
359 TYPENUMS may be (-1, -1) to return a new type object that is not
360 put into the type vector, and so may not be referred to by number. */
363 dbx_alloc_type (typenums
, objfile
)
365 struct objfile
*objfile
;
367 register struct type
**type_addr
;
369 if (typenums
[0] == -1)
371 return (alloc_type (objfile
));
374 type_addr
= dbx_lookup_type (typenums
);
376 /* If we are referring to a type not known at all yet,
377 allocate an empty type for it.
378 We will fill it in later if we find out how. */
381 *type_addr
= alloc_type (objfile
);
387 /* for all the stabs in a given stab vector, build appropriate types
388 and fix their symbols in given symbol vector. */
391 patch_block_stabs (symbols
, stabs
, objfile
)
392 struct pending
*symbols
;
393 struct pending_stabs
*stabs
;
394 struct objfile
*objfile
;
404 /* for all the stab entries, find their corresponding symbols and
405 patch their types! */
407 for (ii
= 0; ii
< stabs
->count
; ++ii
)
409 name
= stabs
->stab
[ii
];
410 pp
= (char*) strchr (name
, ':');
411 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
414 /* On xcoff, if a global is defined and never referenced,
415 ld will remove it from the executable. There is then
416 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
417 sym
= (struct symbol
*)
418 obstack_alloc (&objfile
->symbol_obstack
,
419 sizeof (struct symbol
));
421 memset (sym
, 0, sizeof (struct symbol
));
422 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
423 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
425 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
427 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
429 /* I don't think the linker does this with functions,
430 so as far as I know this is never executed.
431 But it doesn't hurt to check. */
433 lookup_function_type (read_type (&pp
, objfile
));
437 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
439 add_symbol_to_list (sym
, &global_symbols
);
444 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
447 lookup_function_type (read_type (&pp
, objfile
));
451 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
459 /* Read a number by which a type is referred to in dbx data,
460 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
461 Just a single number N is equivalent to (0,N).
462 Return the two numbers by storing them in the vector TYPENUMS.
463 TYPENUMS will then be used as an argument to dbx_lookup_type.
465 Returns 0 for success, -1 for error. */
468 read_type_number (pp
, typenums
)
470 register int *typenums
;
476 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
477 if (nbits
!= 0) return -1;
478 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
479 if (nbits
!= 0) return -1;
484 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
485 if (nbits
!= 0) return -1;
491 /* To handle GNU C++ typename abbreviation, we need to be able to
492 fill in a type's name as soon as space for that type is allocated.
493 `type_synonym_name' is the name of the type being allocated.
494 It is cleared as soon as it is used (lest all allocated types
497 static char *type_synonym_name
;
501 define_symbol (valu
, string
, desc
, type
, objfile
)
506 struct objfile
*objfile
;
508 register struct symbol
*sym
;
509 char *p
= (char *) strchr (string
, ':');
514 /* We would like to eliminate nameless symbols, but keep their types.
515 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
516 to type 2, but, should not create a symbol to address that type. Since
517 the symbol will be nameless, there is no way any user can refer to it. */
521 /* Ignore syms with empty names. */
525 /* Ignore old-style symbols from cc -go */
529 /* If a nameless stab entry, all we need is the type, not the symbol.
530 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
531 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
533 sym
= (struct symbol
*)
534 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
535 memset (sym
, 0, sizeof (struct symbol
));
537 if (processing_gcc_compilation
)
539 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
540 number of bytes occupied by a type or object, which we ignore. */
541 SYMBOL_LINE(sym
) = desc
;
545 SYMBOL_LINE(sym
) = 0; /* unknown */
548 if (string
[0] == CPLUS_MARKER
)
550 /* Special GNU C++ names. */
554 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
555 &objfile
-> symbol_obstack
);
558 case 'v': /* $vtbl_ptr_type */
559 /* Was: SYMBOL_NAME (sym) = "vptr"; */
563 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
564 &objfile
-> symbol_obstack
);
568 /* This was an anonymous type that was never fixed up. */
572 complain (&unrecognized_cplus_name_complaint
, string
);
573 goto normal
; /* Do *something* with it */
579 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
580 SYMBOL_NAME (sym
) = (char *)
581 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
582 /* Open-coded bcopy--saves function call time. */
583 /* FIXME: Does it really? Try replacing with simple strcpy and
584 try it on an executable with a large symbol table. */
586 register char *p1
= string
;
587 register char *p2
= SYMBOL_NAME (sym
);
595 /* If this symbol is from a C++ compilation, then attempt to cache the
596 demangled form for future reference. This is a typical time versus
597 space tradeoff, that was decided in favor of time because it sped up
598 C++ symbol lookups by a factor of about 20. */
600 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
604 /* Determine the type of name being defined. */
606 /* Getting GDB to correctly skip the symbol on an undefined symbol
607 descriptor and not ever dump core is a very dodgy proposition if
608 we do things this way. I say the acorn RISC machine can just
609 fix their compiler. */
610 /* The Acorn RISC machine's compiler can put out locals that don't
611 start with "234=" or "(3,4)=", so assume anything other than the
612 deftypes we know how to handle is a local. */
613 if (!strchr ("cfFGpPrStTvVXCR", *p
))
615 if (isdigit (*p
) || *p
== '(' || *p
== '-')
624 /* c is a special case, not followed by a type-number.
625 SYMBOL:c=iVALUE for an integer constant symbol.
626 SYMBOL:c=rVALUE for a floating constant symbol.
627 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
628 e.g. "b:c=e6,0" for "const b = blob1"
629 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
632 SYMBOL_CLASS (sym
) = LOC_CONST
;
633 SYMBOL_TYPE (sym
) = error_type (&p
);
634 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
635 add_symbol_to_list (sym
, &file_symbols
);
646 /* FIXME: lookup_fundamental_type is a hack. We should be
647 creating a type especially for the type of float constants.
648 Problem is, what type should it be? We currently have to
649 read this in host floating point format, but what type
650 represents a host format "double"?
652 Also, what should the name of this type be? Should we
653 be using 'S' constants (see stabs.texinfo) instead? */
655 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
658 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (double));
659 memcpy (dbl_valu
, &d
, sizeof (double));
660 /* Put it in target byte order, but it's still in host
661 floating point format. */
662 SWAP_TARGET_AND_HOST (dbl_valu
, sizeof (double));
663 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
664 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
669 /* Defining integer constants this way is kind of silly,
670 since 'e' constants allows the compiler to give not
671 only the value, but the type as well. C has at least
672 int, long, unsigned int, and long long as constant
673 types; other languages probably should have at least
674 unsigned as well as signed constants. */
676 /* We just need one int constant type for all objfiles.
677 It doesn't depend on languages or anything (arguably its
678 name should be a language-specific name for a type of
679 that size, but I'm inclined to say that if the compiler
680 wants a nice name for the type, it can use 'e'). */
681 static struct type
*int_const_type
;
683 /* Yes, this is as long as a *host* int. That is because we
685 if (int_const_type
== NULL
)
687 init_type (TYPE_CODE_INT
,
688 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
690 (struct objfile
*)NULL
);
691 SYMBOL_TYPE (sym
) = int_const_type
;
692 SYMBOL_VALUE (sym
) = atoi (p
);
693 SYMBOL_CLASS (sym
) = LOC_CONST
;
697 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
698 can be represented as integral.
699 e.g. "b:c=e6,0" for "const b = blob1"
700 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
702 SYMBOL_CLASS (sym
) = LOC_CONST
;
703 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
707 SYMBOL_TYPE (sym
) = error_type (&p
);
712 /* If the value is too big to fit in an int (perhaps because
713 it is unsigned), or something like that, we silently get
714 a bogus value. The type and everything else about it is
715 correct. Ideally, we should be using whatever we have
716 available for parsing unsigned and long long values,
718 SYMBOL_VALUE (sym
) = atoi (p
);
723 SYMBOL_CLASS (sym
) = LOC_CONST
;
724 SYMBOL_TYPE (sym
) = error_type (&p
);
727 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
728 add_symbol_to_list (sym
, &file_symbols
);
732 /* The name of a caught exception. */
733 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
734 SYMBOL_CLASS (sym
) = LOC_LABEL
;
735 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
736 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
737 add_symbol_to_list (sym
, &local_symbols
);
741 /* A static function definition. */
742 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
743 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
744 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
745 add_symbol_to_list (sym
, &file_symbols
);
746 /* fall into process_function_types. */
748 process_function_types
:
749 /* Function result types are described as the result type in stabs.
750 We need to convert this to the function-returning-type-X type
751 in GDB. E.g. "int" is converted to "function returning int". */
752 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
755 /* This code doesn't work -- it needs to realloc and can't. */
756 /* Attempt to set up to record a function prototype... */
757 struct type
*new = alloc_type (objfile
);
759 /* Generate a template for the type of this function. The
760 types of the arguments will be added as we read the symbol
762 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
763 SYMBOL_TYPE(sym
) = new;
764 TYPE_OBJFILE (new) = objfile
;
765 in_function_type
= new;
767 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
770 /* fall into process_prototype_types */
772 process_prototype_types
:
773 /* Sun acc puts declared types of arguments here. We don't care
774 about their actual types (FIXME -- we should remember the whole
775 function prototype), but the list may define some new types
776 that we have to remember, so we must scan it now. */
779 read_type (&p
, objfile
);
784 /* A global function definition. */
785 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
786 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
787 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
788 add_symbol_to_list (sym
, &global_symbols
);
789 goto process_function_types
;
792 /* For a class G (global) symbol, it appears that the
793 value is not correct. It is necessary to search for the
794 corresponding linker definition to find the value.
795 These definitions appear at the end of the namelist. */
796 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
797 i
= hashname (SYMBOL_NAME (sym
));
798 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
799 global_sym_chain
[i
] = sym
;
800 SYMBOL_CLASS (sym
) = LOC_STATIC
;
801 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
802 add_symbol_to_list (sym
, &global_symbols
);
805 /* This case is faked by a conditional above,
806 when there is no code letter in the dbx data.
807 Dbx data never actually contains 'l'. */
809 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
810 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
811 SYMBOL_VALUE (sym
) = valu
;
812 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
813 add_symbol_to_list (sym
, &local_symbols
);
818 /* pF is a two-letter code that means a function parameter in Fortran.
819 The type-number specifies the type of the return value.
820 Translate it into a pointer-to-function type. */
824 = lookup_pointer_type
825 (lookup_function_type (read_type (&p
, objfile
)));
828 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
830 /* Normally this is a parameter, a LOC_ARG. On the i960, it
831 can also be a LOC_LOCAL_ARG depending on symbol type. */
832 #ifndef DBX_PARM_SYMBOL_CLASS
833 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
836 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
837 SYMBOL_VALUE (sym
) = valu
;
838 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
840 /* This doesn't work yet. */
841 add_param_to_type (&in_function_type
, sym
);
843 add_symbol_to_list (sym
, &local_symbols
);
845 /* If it's gcc-compiled, if it says `short', believe it. */
846 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
849 #if !BELIEVE_PCC_PROMOTION
851 /* This is the signed type which arguments get promoted to. */
852 static struct type
*pcc_promotion_type
;
853 /* This is the unsigned type which arguments get promoted to. */
854 static struct type
*pcc_unsigned_promotion_type
;
856 /* Call it "int" because this is mainly C lossage. */
857 if (pcc_promotion_type
== NULL
)
859 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
862 if (pcc_unsigned_promotion_type
== NULL
)
863 pcc_unsigned_promotion_type
=
864 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
865 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
867 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
868 /* This macro is defined on machines (e.g. sparc) where
869 we should believe the type of a PCC 'short' argument,
870 but shouldn't believe the address (the address is
871 the address of the corresponding int). Note that
872 this is only different from the BELIEVE_PCC_PROMOTION
873 case on big-endian machines.
875 My guess is that this correction, as opposed to changing
876 the parameter to an 'int' (as done below, for PCC
877 on most machines), is the right thing to do
878 on all machines, but I don't want to risk breaking
879 something that already works. On most PCC machines,
880 the sparc problem doesn't come up because the calling
881 function has to zero the top bytes (not knowing whether
882 the called function wants an int or a short), so there
883 is no practical difference between an int and a short
884 (except perhaps what happens when the GDB user types
885 "print short_arg = 0x10000;").
887 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
888 actually produces the correct address (we don't need to fix it
889 up). I made this code adapt so that it will offset the symbol
890 if it was pointing at an int-aligned location and not
891 otherwise. This way you can use the same gdb for 4.0.x and
894 If the parameter is shorter than an int, and is integral
895 (e.g. char, short, or unsigned equivalent), and is claimed to
896 be passed on an integer boundary, don't believe it! Offset the
897 parameter's address to the tail-end of that integer. */
899 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
900 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
901 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
903 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
904 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
908 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
910 /* If PCC says a parameter is a short or a char,
911 it is really an int. */
912 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
913 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
916 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
917 ? pcc_unsigned_promotion_type
918 : pcc_promotion_type
;
922 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
924 #endif /* !BELIEVE_PCC_PROMOTION. */
927 /* acc seems to use P to delare the prototypes of functions that
928 are referenced by this file. gdb is not prepared to deal
929 with this extra information. FIXME, it ought to. */
932 read_type (&p
, objfile
);
933 goto process_prototype_types
;
938 /* Parameter which is in a register. */
939 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
940 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
941 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
942 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
944 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
945 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
947 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
948 add_symbol_to_list (sym
, &local_symbols
);
952 /* Register variable (either global or local). */
953 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
954 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
955 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
956 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
958 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
959 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
961 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
964 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
965 name to represent an argument passed in a register.
966 GCC uses 'P' for the same case. So if we find such a symbol pair
967 we combine it into one 'P' symbol.
968 Note that this code illegally combines
969 main(argc) int argc; { register int argc = 1; }
970 but this case is considered pathological and causes a warning
971 from a decent compiler. */
973 && local_symbols
->nsyms
> 0)
975 struct symbol
*prev_sym
;
976 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
977 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
978 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
980 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
981 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
986 add_symbol_to_list (sym
, &local_symbols
);
989 add_symbol_to_list (sym
, &file_symbols
);
993 /* Static symbol at top level of file */
994 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
995 SYMBOL_CLASS (sym
) = LOC_STATIC
;
996 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
997 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
998 add_symbol_to_list (sym
, &file_symbols
);
1003 /* See comment where long_kludge_name is declared. */
1004 /* Here we save the name of the symbol for read_range_type, which
1005 ends up reading in the basic types. In stabs, unfortunately there
1006 is no distinction between "int" and "long" types except their
1007 names. Until we work out a saner type policy (eliminating most
1008 builtin types and using the names specified in the files), we
1009 save away the name so that far away from here in read_range_type,
1010 we can examine it to decide between "int" and "long". FIXME. */
1011 long_kludge_name
= SYMBOL_NAME (sym
);
1013 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1015 /* For a nameless type, we don't want a create a symbol, thus we
1016 did not use `sym'. Return without further processing. */
1017 if (nameless
) return NULL
;
1019 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1020 SYMBOL_VALUE (sym
) = valu
;
1021 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1022 /* C++ vagaries: we may have a type which is derived from
1023 a base type which did not have its name defined when the
1024 derived class was output. We fill in the derived class's
1025 base part member's name here in that case. */
1026 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1027 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1028 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1029 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1032 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1033 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1034 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1035 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1038 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1040 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
)
1042 /* If we are giving a name to a type such as "pointer
1043 to foo", we better not set the TYPE_NAME. If the
1044 program contains "typedef char *caddr_t;", we don't
1045 want all variables of type char * to print as
1046 caddr_t. This is not just a consequence of GDB's
1047 type management; PCC and GCC (at least through
1048 version 2.4) both output variables of either type
1049 char * or caddr_t with the type number defined in
1050 the 't' symbol for caddr_t. If a future compiler
1051 cleans this up it GDB is not ready for it yet, but
1052 if it becomes ready we somehow need to disable this
1053 check (without breaking the PCC/GCC2.4 case).
1057 Fortunately, this check seems not to be necessary
1058 for anything except pointers. */
1061 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1064 add_symbol_to_list (sym
, &file_symbols
);
1068 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1069 by 't' which means we are typedef'ing it as well. */
1070 synonym
= *p
== 't';
1075 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1076 strlen (SYMBOL_NAME (sym
)),
1077 &objfile
-> symbol_obstack
);
1080 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1082 /* For a nameless type, we don't want a create a symbol, thus we
1083 did not use `sym'. Return without further processing. */
1084 if (nameless
) return NULL
;
1086 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1087 SYMBOL_VALUE (sym
) = valu
;
1088 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1089 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1090 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1091 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1092 add_symbol_to_list (sym
, &file_symbols
);
1096 /* Clone the sym and then modify it. */
1097 register struct symbol
*typedef_sym
= (struct symbol
*)
1098 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1099 *typedef_sym
= *sym
;
1100 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1101 SYMBOL_VALUE (typedef_sym
) = valu
;
1102 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1103 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1104 TYPE_NAME (SYMBOL_TYPE (sym
))
1105 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1106 add_symbol_to_list (typedef_sym
, &file_symbols
);
1111 /* Static symbol of local scope */
1112 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1113 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1114 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1115 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1116 add_symbol_to_list (sym
, &local_symbols
);
1120 /* Reference parameter */
1121 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1122 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1123 SYMBOL_VALUE (sym
) = valu
;
1124 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1125 add_symbol_to_list (sym
, &local_symbols
);
1129 /* This is used by Sun FORTRAN for "function result value".
1130 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1131 that Pascal uses it too, but when I tried it Pascal used
1132 "x:3" (local symbol) instead. */
1133 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1134 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1135 SYMBOL_VALUE (sym
) = valu
;
1136 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1137 add_symbol_to_list (sym
, &local_symbols
);
1141 SYMBOL_TYPE (sym
) = error_type (&p
);
1142 SYMBOL_CLASS (sym
) = LOC_CONST
;
1143 SYMBOL_VALUE (sym
) = 0;
1144 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1145 add_symbol_to_list (sym
, &file_symbols
);
1149 /* When passing structures to a function, some systems sometimes pass
1150 the address in a register, not the structure itself.
1152 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1153 to LOC_REGPARM_ADDR for structures and unions. */
1155 #if !defined (REG_STRUCT_HAS_ADDR)
1156 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
1159 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1160 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1161 && ( (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1162 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1163 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1169 /* Skip rest of this symbol and return an error type.
1171 General notes on error recovery: error_type always skips to the
1172 end of the symbol (modulo cretinous dbx symbol name continuation).
1173 Thus code like this:
1175 if (*(*pp)++ != ';')
1176 return error_type (pp);
1178 is wrong because if *pp starts out pointing at '\0' (typically as the
1179 result of an earlier error), it will be incremented to point to the
1180 start of the next symbol, which might produce strange results, at least
1181 if you run off the end of the string table. Instead use
1184 return error_type (pp);
1190 foo = error_type (pp);
1194 And in case it isn't obvious, the point of all this hair is so the compiler
1195 can define new types and new syntaxes, and old versions of the
1196 debugger will be able to read the new symbol tables. */
1198 static struct type
*
1202 complain (&error_type_complaint
);
1205 /* Skip to end of symbol. */
1206 while (**pp
!= '\0')
1211 /* Check for and handle cretinous dbx symbol name continuation! */
1212 if ((*pp
)[-1] == '\\')
1214 *pp
= next_symbol_text ();
1221 return (builtin_type_error
);
1225 /* Read type information or a type definition; return the type. Even
1226 though this routine accepts either type information or a type
1227 definition, the distinction is relevant--some parts of stabsread.c
1228 assume that type information starts with a digit, '-', or '(' in
1229 deciding whether to call read_type. */
1232 read_type (pp
, objfile
)
1234 struct objfile
*objfile
;
1236 register struct type
*type
= 0;
1240 char type_descriptor
;
1242 /* Read type number if present. The type number may be omitted.
1243 for instance in a two-dimensional array declared with type
1244 "ar1;1;10;ar1;1;10;4". */
1245 if ((**pp
>= '0' && **pp
<= '9')
1248 if (read_type_number (pp
, typenums
) != 0)
1249 return error_type (pp
);
1251 /* Type is not being defined here. Either it already exists,
1252 or this is a forward reference to it. dbx_alloc_type handles
1255 return dbx_alloc_type (typenums
, objfile
);
1257 /* Type is being defined here. */
1264 /* It might be a type attribute or a member type. */
1265 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1270 /* Type attributes; skip to the semicolon. */
1271 while (*p
!= ';' && *p
!= '\0')
1275 return error_type (pp
);
1277 /* Skip the semicolon. */
1281 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1286 /* 'typenums=' not present, type is anonymous. Read and return
1287 the definition, but don't put it in the type vector. */
1288 typenums
[0] = typenums
[1] = -1;
1292 type_descriptor
= (*pp
)[-1];
1293 switch (type_descriptor
)
1297 enum type_code code
;
1299 /* Used to index through file_symbols. */
1300 struct pending
*ppt
;
1303 /* Name including "struct", etc. */
1306 /* Name without "struct", etc. */
1307 char *type_name_only
;
1313 /* Set the type code according to the following letter. */
1317 code
= TYPE_CODE_STRUCT
;
1320 code
= TYPE_CODE_UNION
;
1323 code
= TYPE_CODE_ENUM
;
1326 return error_type (pp
);
1329 to
= type_name
= (char *)
1330 obstack_alloc (&objfile
-> type_obstack
,
1331 (((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1333 /* Copy the name. */
1335 while ((*to
++ = *from
++) != ':')
1339 /* Set the pointer ahead of the name which we just read. */
1343 /* Now check to see whether the type has already been declared. */
1344 /* This is necessary at least in the case where the
1345 program says something like
1347 The compiler puts out a cross-reference; we better find
1348 set the length of the structure correctly so we can
1349 set the length of the array. */
1350 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1351 for (i
= 0; i
< ppt
->nsyms
; i
++)
1353 struct symbol
*sym
= ppt
->symbol
[i
];
1355 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1356 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1357 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1358 && STREQ (SYMBOL_NAME (sym
), type_name
))
1360 obstack_free (&objfile
-> type_obstack
, type_name
);
1361 type
= SYMBOL_TYPE (sym
);
1366 /* Didn't find the type to which this refers, so we must
1367 be dealing with a forward reference. Allocate a type
1368 structure for it, and keep track of it so we can
1369 fill in the rest of the fields when we get the full
1371 type
= dbx_alloc_type (typenums
, objfile
);
1372 TYPE_CODE (type
) = code
;
1373 TYPE_TAG_NAME (type
) = type_name
;
1374 INIT_CPLUS_SPECIFIC(type
);
1375 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1377 add_undefined_type (type
);
1381 case '-': /* RS/6000 built-in type */
1394 /* The type is being defined to another type. When we support
1395 Ada (and arguably for C, so "whatis foo" can give "size_t",
1396 "wchar_t", or whatever it was declared as) we'll need to
1397 allocate a distinct type here rather than returning the
1398 existing one. GCC is currently (deliberately) incapable of
1399 putting out the debugging information to do that, however. */
1402 if (read_type_number (pp
, xtypenums
) != 0)
1403 return error_type (pp
);
1404 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1405 /* It's being defined as itself. That means it is "void". */
1406 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1408 type
= *dbx_lookup_type (xtypenums
);
1409 if (typenums
[0] != -1)
1410 *dbx_lookup_type (typenums
) = type
;
1411 /* This can happen if we had '-' followed by a garbage character,
1414 return error_type (pp
);
1417 /* In the following types, we must be sure to overwrite any existing
1418 type that the typenums refer to, rather than allocating a new one
1419 and making the typenums point to the new one. This is because there
1420 may already be pointers to the existing type (if it had been
1421 forward-referenced), and we must change it to a pointer, function,
1422 reference, or whatever, *in-place*. */
1425 type1
= read_type (pp
, objfile
);
1426 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1429 case '&': /* Reference to another type */
1430 type1
= read_type (pp
, objfile
);
1431 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1434 case 'f': /* Function returning another type */
1435 type1
= read_type (pp
, objfile
);
1436 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1439 case 'k': /* Const qualifier on some type (Sun) */
1440 type
= read_type (pp
, objfile
);
1441 /* FIXME! For now, we ignore const and volatile qualifiers. */
1444 case 'B': /* Volatile qual on some type (Sun) */
1445 type
= read_type (pp
, objfile
);
1446 /* FIXME! For now, we ignore const and volatile qualifiers. */
1449 /* FIXME -- we should be doing smash_to_XXX types here. */
1450 case '@': /* Member (class & variable) type */
1452 struct type
*domain
= read_type (pp
, objfile
);
1453 struct type
*memtype
;
1456 /* Invalid member type data format. */
1457 return error_type (pp
);
1460 memtype
= read_type (pp
, objfile
);
1461 type
= dbx_alloc_type (typenums
, objfile
);
1462 smash_to_member_type (type
, domain
, memtype
);
1466 case '#': /* Method (class & fn) type */
1467 if ((*pp
)[0] == '#')
1469 /* We'll get the parameter types from the name. */
1470 struct type
*return_type
;
1473 return_type
= read_type (pp
, objfile
);
1474 if (*(*pp
)++ != ';')
1475 complain (&invalid_member_complaint
, symnum
);
1476 type
= allocate_stub_method (return_type
);
1477 if (typenums
[0] != -1)
1478 *dbx_lookup_type (typenums
) = type
;
1482 struct type
*domain
= read_type (pp
, objfile
);
1483 struct type
*return_type
;
1487 /* Invalid member type data format. */
1488 return error_type (pp
);
1492 return_type
= read_type (pp
, objfile
);
1493 args
= read_args (pp
, ';', objfile
);
1494 type
= dbx_alloc_type (typenums
, objfile
);
1495 smash_to_method_type (type
, domain
, return_type
, args
);
1499 case 'r': /* Range type */
1500 type
= read_range_type (pp
, typenums
, objfile
);
1501 if (typenums
[0] != -1)
1502 *dbx_lookup_type (typenums
) = type
;
1505 case 'b': /* Sun ACC builtin int type */
1506 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1507 if (typenums
[0] != -1)
1508 *dbx_lookup_type (typenums
) = type
;
1511 case 'R': /* Sun ACC builtin float type */
1512 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1513 if (typenums
[0] != -1)
1514 *dbx_lookup_type (typenums
) = type
;
1517 case 'e': /* Enumeration type */
1518 type
= dbx_alloc_type (typenums
, objfile
);
1519 type
= read_enum_type (pp
, type
, objfile
);
1520 if (typenums
[0] != -1)
1521 *dbx_lookup_type (typenums
) = type
;
1524 case 's': /* Struct type */
1525 case 'u': /* Union type */
1526 type
= dbx_alloc_type (typenums
, objfile
);
1527 if (!TYPE_NAME (type
))
1529 TYPE_NAME (type
) = type_synonym_name
;
1531 type_synonym_name
= NULL
;
1532 switch (type_descriptor
)
1535 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1538 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1541 type
= read_struct_type (pp
, type
, objfile
);
1544 case 'a': /* Array type */
1546 return error_type (pp
);
1549 type
= dbx_alloc_type (typenums
, objfile
);
1550 type
= read_array_type (pp
, type
, objfile
);
1554 --*pp
; /* Go back to the symbol in error */
1555 /* Particularly important if it was \0! */
1556 return error_type (pp
);
1561 warning ("GDB internal error, type is NULL in stabsread.c\n");
1562 return error_type (pp
);
1568 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1569 Return the proper type node for a given builtin type number. */
1571 static struct type
*
1572 rs6000_builtin_type (typenum
)
1575 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1576 #define NUMBER_RECOGNIZED 30
1577 /* This includes an empty slot for type number -0. */
1578 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1579 struct type
*rettype
;
1581 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1583 complain (&rs6000_builtin_complaint
, typenum
);
1584 return builtin_type_error
;
1586 if (negative_types
[-typenum
] != NULL
)
1587 return negative_types
[-typenum
];
1589 #if TARGET_CHAR_BIT != 8
1590 #error This code wrong for TARGET_CHAR_BIT not 8
1591 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1592 that if that ever becomes not true, the correct fix will be to
1593 make the size in the struct type to be in bits, not in units of
1600 /* The size of this and all the other types are fixed, defined
1601 by the debugging format. If there is a type called "int" which
1602 is other than 32 bits, then it should use a new negative type
1603 number (or avoid negative type numbers for that case).
1604 See stabs.texinfo. */
1605 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1608 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1611 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1614 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1617 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1618 "unsigned char", NULL
);
1621 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1624 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1625 "unsigned short", NULL
);
1628 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1629 "unsigned int", NULL
);
1632 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1635 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1636 "unsigned long", NULL
);
1639 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1642 /* IEEE single precision (32 bit). */
1643 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1646 /* IEEE double precision (64 bit). */
1647 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1650 /* This is an IEEE double on the RS/6000, and different machines with
1651 different sizes for "long double" should use different negative
1652 type numbers. See stabs.texinfo. */
1653 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1656 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1659 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1662 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1665 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1668 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1671 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1675 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1679 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1683 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1687 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1691 /* Complex type consisting of two IEEE single precision values. */
1692 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1695 /* Complex type consisting of two IEEE double precision values. */
1696 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1699 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1702 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1705 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1708 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1711 negative_types
[-typenum
] = rettype
;
1715 /* This page contains subroutines of read_type. */
1717 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1718 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1719 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1721 /* Read member function stabs info for C++ classes. The form of each member
1724 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1726 An example with two member functions is:
1728 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1730 For the case of overloaded operators, the format is op$::*.funcs, where
1731 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1732 name (such as `+=') and `.' marks the end of the operator name.
1734 Returns 1 for success, 0 for failure. */
1737 read_member_functions (fip
, pp
, type
, objfile
)
1738 struct field_info
*fip
;
1741 struct objfile
*objfile
;
1745 /* Total number of member functions defined in this class. If the class
1746 defines two `f' functions, and one `g' function, then this will have
1748 int total_length
= 0;
1752 struct next_fnfield
*next
;
1753 struct fn_field fn_field
;
1755 struct type
*look_ahead_type
;
1756 struct next_fnfieldlist
*new_fnlist
;
1757 struct next_fnfield
*new_sublist
;
1761 /* Process each list until we find something that is not a member function
1762 or find the end of the functions. */
1766 /* We should be positioned at the start of the function name.
1767 Scan forward to find the first ':' and if it is not the
1768 first of a "::" delimiter, then this is not a member function. */
1780 look_ahead_type
= NULL
;
1783 new_fnlist
= (struct next_fnfieldlist
*)
1784 xmalloc (sizeof (struct next_fnfieldlist
));
1785 make_cleanup (free
, new_fnlist
);
1786 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1788 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1790 /* This is a completely wierd case. In order to stuff in the
1791 names that might contain colons (the usual name delimiter),
1792 Mike Tiemann defined a different name format which is
1793 signalled if the identifier is "op$". In that case, the
1794 format is "op$::XXXX." where XXXX is the name. This is
1795 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1796 /* This lets the user type "break operator+".
1797 We could just put in "+" as the name, but that wouldn't
1799 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1800 char *o
= opname
+ 3;
1802 /* Skip past '::'. */
1805 STABS_CONTINUE (pp
);
1811 main_fn_name
= savestring (opname
, o
- opname
);
1817 main_fn_name
= savestring (*pp
, p
- *pp
);
1818 /* Skip past '::'. */
1821 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1826 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1827 make_cleanup (free
, new_sublist
);
1828 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1830 /* Check for and handle cretinous dbx symbol name continuation! */
1831 if (look_ahead_type
== NULL
)
1834 STABS_CONTINUE (pp
);
1836 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1839 /* Invalid symtab info for member function. */
1845 /* g++ version 1 kludge */
1846 new_sublist
-> fn_field
.type
= look_ahead_type
;
1847 look_ahead_type
= NULL
;
1857 /* If this is just a stub, then we don't have the real name here. */
1859 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1861 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1862 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1863 new_sublist
-> fn_field
.is_stub
= 1;
1865 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1868 /* Set this member function's visibility fields. */
1871 case VISIBILITY_PRIVATE
:
1872 new_sublist
-> fn_field
.is_private
= 1;
1874 case VISIBILITY_PROTECTED
:
1875 new_sublist
-> fn_field
.is_protected
= 1;
1879 STABS_CONTINUE (pp
);
1882 case 'A': /* Normal functions. */
1883 new_sublist
-> fn_field
.is_const
= 0;
1884 new_sublist
-> fn_field
.is_volatile
= 0;
1887 case 'B': /* `const' member functions. */
1888 new_sublist
-> fn_field
.is_const
= 1;
1889 new_sublist
-> fn_field
.is_volatile
= 0;
1892 case 'C': /* `volatile' member function. */
1893 new_sublist
-> fn_field
.is_const
= 0;
1894 new_sublist
-> fn_field
.is_volatile
= 1;
1897 case 'D': /* `const volatile' member function. */
1898 new_sublist
-> fn_field
.is_const
= 1;
1899 new_sublist
-> fn_field
.is_volatile
= 1;
1902 case '*': /* File compiled with g++ version 1 -- no info */
1907 complain (&const_vol_complaint
, **pp
);
1916 /* virtual member function, followed by index.
1917 The sign bit is set to distinguish pointers-to-methods
1918 from virtual function indicies. Since the array is
1919 in words, the quantity must be shifted left by 1
1920 on 16 bit machine, and by 2 on 32 bit machine, forcing
1921 the sign bit out, and usable as a valid index into
1922 the array. Remove the sign bit here. */
1923 new_sublist
-> fn_field
.voffset
=
1924 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1928 STABS_CONTINUE (pp
);
1929 if (**pp
== ';' || **pp
== '\0')
1931 /* Must be g++ version 1. */
1932 new_sublist
-> fn_field
.fcontext
= 0;
1936 /* Figure out from whence this virtual function came.
1937 It may belong to virtual function table of
1938 one of its baseclasses. */
1939 look_ahead_type
= read_type (pp
, objfile
);
1942 /* g++ version 1 overloaded methods. */
1946 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1955 look_ahead_type
= NULL
;
1961 /* static member function. */
1962 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1963 if (strncmp (new_sublist
-> fn_field
.physname
,
1964 main_fn_name
, strlen (main_fn_name
)))
1966 new_sublist
-> fn_field
.is_stub
= 1;
1972 complain (&member_fn_complaint
, (*pp
)[-1]);
1973 /* Fall through into normal member function. */
1976 /* normal member function. */
1977 new_sublist
-> fn_field
.voffset
= 0;
1978 new_sublist
-> fn_field
.fcontext
= 0;
1982 new_sublist
-> next
= sublist
;
1983 sublist
= new_sublist
;
1985 STABS_CONTINUE (pp
);
1987 while (**pp
!= ';' && **pp
!= '\0');
1991 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1992 obstack_alloc (&objfile
-> type_obstack
,
1993 sizeof (struct fn_field
) * length
);
1994 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
1995 sizeof (struct fn_field
) * length
);
1996 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
1998 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2001 new_fnlist
-> fn_fieldlist
.length
= length
;
2002 new_fnlist
-> next
= fip
-> fnlist
;
2003 fip
-> fnlist
= new_fnlist
;
2005 total_length
+= length
;
2006 STABS_CONTINUE (pp
);
2011 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2012 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2013 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2014 memset (TYPE_FN_FIELDLISTS (type
), 0,
2015 sizeof (struct fn_fieldlist
) * nfn_fields
);
2016 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2017 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2023 /* Special GNU C++ name.
2025 Returns 1 for success, 0 for failure. "failure" means that we can't
2026 keep parsing and it's time for error_type(). */
2029 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2030 struct field_info
*fip
;
2033 struct objfile
*objfile
;
2039 struct type
*context
;
2049 /* At this point, *pp points to something like "22:23=*22...",
2050 where the type number before the ':' is the "context" and
2051 everything after is a regular type definition. Lookup the
2052 type, find it's name, and construct the field name. */
2054 context
= read_type (pp
, objfile
);
2058 case 'f': /* $vf -- a virtual function table pointer */
2059 fip
->list
->field
.name
=
2060 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2063 case 'b': /* $vb -- a virtual bsomethingorother */
2064 name
= type_name_no_tag (context
);
2067 complain (&invalid_cpp_type_complaint
, symnum
);
2070 fip
->list
->field
.name
=
2071 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2075 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2076 fip
->list
->field
.name
=
2077 obconcat (&objfile
->type_obstack
,
2078 "INVALID_CPLUSPLUS_ABBREV", "", "");
2082 /* At this point, *pp points to the ':'. Skip it and read the
2088 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2091 fip
->list
->field
.type
= read_type (pp
, objfile
);
2093 (*pp
)++; /* Skip the comma. */
2099 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2103 /* This field is unpacked. */
2104 fip
->list
->field
.bitsize
= 0;
2105 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2109 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2110 /* We have no idea what syntax an unrecognized abbrev would have, so
2111 better return 0. If we returned 1, we would need to at least advance
2112 *pp to avoid an infinite loop. */
2119 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2120 struct field_info
*fip
;
2124 struct objfile
*objfile
;
2126 fip
-> list
-> field
.name
=
2127 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2130 /* This means we have a visibility for a field coming. */
2134 fip
-> list
-> visibility
= *(*pp
)++;
2135 switch (fip
-> list
-> visibility
)
2137 case VISIBILITY_PRIVATE
:
2138 case VISIBILITY_PROTECTED
:
2141 case VISIBILITY_PUBLIC
:
2146 /* Unknown visibility specifier. */
2147 complain (&stabs_general_complaint
,
2148 "unknown visibility specifier");
2155 /* normal dbx-style format, no explicit visibility */
2156 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2159 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2164 /* Possible future hook for nested types. */
2167 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2173 /* Static class member. */
2174 fip
-> list
-> field
.bitpos
= (long) -1;
2180 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2184 else if (**pp
!= ',')
2186 /* Bad structure-type format. */
2187 complain (&stabs_general_complaint
, "bad structure-type format");
2191 (*pp
)++; /* Skip the comma. */
2195 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2198 complain (&stabs_general_complaint
, "bad structure-type format");
2201 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2204 complain (&stabs_general_complaint
, "bad structure-type format");
2209 /* FIXME-tiemann: Can't the compiler put out something which
2210 lets us distinguish these? (or maybe just not put out anything
2211 for the field). What is the story here? What does the compiler
2212 really do? Also, patch gdb.texinfo for this case; I document
2213 it as a possible problem there. Search for "DBX-style". */
2215 /* This is wrong because this is identical to the symbols
2216 produced for GCC 0-size arrays. For example:
2221 The code which dumped core in such circumstances should be
2222 fixed not to dump core. */
2224 /* g++ -g0 can put out bitpos & bitsize zero for a static
2225 field. This does not give us any way of getting its
2226 class, so we can't know its name. But we can just
2227 ignore the field so we don't dump core and other nasty
2229 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2231 complain (&dbx_class_complaint
);
2232 /* Ignore this field. */
2233 fip
-> list
= fip
-> list
-> next
;
2238 /* Detect an unpacked field and mark it as such.
2239 dbx gives a bit size for all fields.
2240 Note that forward refs cannot be packed,
2241 and treat enums as if they had the width of ints. */
2243 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2244 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2246 fip
-> list
-> field
.bitsize
= 0;
2248 if ((fip
-> list
-> field
.bitsize
2249 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2250 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2251 && (fip
-> list
-> field
.bitsize
2256 fip
-> list
-> field
.bitpos
% 8 == 0)
2258 fip
-> list
-> field
.bitsize
= 0;
2264 /* Read struct or class data fields. They have the form:
2266 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2268 At the end, we see a semicolon instead of a field.
2270 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2273 The optional VISIBILITY is one of:
2275 '/0' (VISIBILITY_PRIVATE)
2276 '/1' (VISIBILITY_PROTECTED)
2277 '/2' (VISIBILITY_PUBLIC)
2279 or nothing, for C style fields with public visibility.
2281 Returns 1 for success, 0 for failure. */
2284 read_struct_fields (fip
, pp
, type
, objfile
)
2285 struct field_info
*fip
;
2288 struct objfile
*objfile
;
2291 struct nextfield
*new;
2293 /* We better set p right now, in case there are no fields at all... */
2297 /* Read each data member type until we find the terminating ';' at the end of
2298 the data member list, or break for some other reason such as finding the
2299 start of the member function list. */
2303 STABS_CONTINUE (pp
);
2304 /* Get space to record the next field's data. */
2305 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2306 make_cleanup (free
, new);
2307 memset (new, 0, sizeof (struct nextfield
));
2308 new -> next
= fip
-> list
;
2311 /* Get the field name. */
2313 /* If is starts with CPLUS_MARKER it is a special abbreviation, unless
2314 the CPLUS_MARKER is followed by an underscore, in which case it is
2315 just the name of an anonymous type, which we should handle like any
2317 if (*p
== CPLUS_MARKER
&& p
[1] != '_')
2319 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2324 /* Look for the ':' that separates the field name from the field
2325 values. Data members are delimited by a single ':', while member
2326 functions are delimited by a pair of ':'s. When we hit the member
2327 functions (if any), terminate scan loop and return. */
2329 while (*p
!= ':' && *p
!= '\0')
2336 /* Check to see if we have hit the member functions yet. */
2341 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2345 /* chill the list of fields: the last entry (at the head) is a
2346 partially constructed entry which we now scrub. */
2347 fip
-> list
= fip
-> list
-> next
;
2352 /* The stabs for C++ derived classes contain baseclass information which
2353 is marked by a '!' character after the total size. This function is
2354 called when we encounter the baseclass marker, and slurps up all the
2355 baseclass information.
2357 Immediately following the '!' marker is the number of base classes that
2358 the class is derived from, followed by information for each base class.
2359 For each base class, there are two visibility specifiers, a bit offset
2360 to the base class information within the derived class, a reference to
2361 the type for the base class, and a terminating semicolon.
2363 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2365 Baseclass information marker __________________|| | | | | | |
2366 Number of baseclasses __________________________| | | | | | |
2367 Visibility specifiers (2) ________________________| | | | | |
2368 Offset in bits from start of class _________________| | | | |
2369 Type number for base class ___________________________| | | |
2370 Visibility specifiers (2) _______________________________| | |
2371 Offset in bits from start of class ________________________| |
2372 Type number of base class ____________________________________|
2374 Return 1 for success, 0 for (error-type-inducing) failure. */
2377 read_baseclasses (fip
, pp
, type
, objfile
)
2378 struct field_info
*fip
;
2381 struct objfile
*objfile
;
2384 struct nextfield
*new;
2392 /* Skip the '!' baseclass information marker. */
2396 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2399 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2405 /* Some stupid compilers have trouble with the following, so break
2406 it up into simpler expressions. */
2407 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2408 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2411 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2414 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2415 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2419 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2421 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2423 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2424 make_cleanup (free
, new);
2425 memset (new, 0, sizeof (struct nextfield
));
2426 new -> next
= fip
-> list
;
2428 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2430 STABS_CONTINUE (pp
);
2434 /* Nothing to do. */
2437 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2440 /* Bad visibility format. */
2444 new -> visibility
= *(*pp
)++;
2445 switch (new -> visibility
)
2447 case VISIBILITY_PRIVATE
:
2448 case VISIBILITY_PROTECTED
:
2449 case VISIBILITY_PUBLIC
:
2452 /* Bad visibility format. */
2459 /* The remaining value is the bit offset of the portion of the object
2460 corresponding to this baseclass. Always zero in the absence of
2461 multiple inheritance. */
2463 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2468 /* The last piece of baseclass information is the type of the
2469 base class. Read it, and remember it's type name as this
2472 new -> field
.type
= read_type (pp
, objfile
);
2473 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2475 /* skip trailing ';' and bump count of number of fields seen */
2484 /* The tail end of stabs for C++ classes that contain a virtual function
2485 pointer contains a tilde, a %, and a type number.
2486 The type number refers to the base class (possibly this class itself) which
2487 contains the vtable pointer for the current class.
2489 This function is called when we have parsed all the method declarations,
2490 so we can look for the vptr base class info. */
2493 read_tilde_fields (fip
, pp
, type
, objfile
)
2494 struct field_info
*fip
;
2497 struct objfile
*objfile
;
2501 STABS_CONTINUE (pp
);
2503 /* If we are positioned at a ';', then skip it. */
2513 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2515 /* Obsolete flags that used to indicate the presence
2516 of constructors and/or destructors. */
2520 /* Read either a '%' or the final ';'. */
2521 if (*(*pp
)++ == '%')
2523 /* The next number is the type number of the base class
2524 (possibly our own class) which supplies the vtable for
2525 this class. Parse it out, and search that class to find
2526 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2527 and TYPE_VPTR_FIELDNO. */
2532 t
= read_type (pp
, objfile
);
2534 while (*p
!= '\0' && *p
!= ';')
2540 /* Premature end of symbol. */
2544 TYPE_VPTR_BASETYPE (type
) = t
;
2545 if (type
== t
) /* Our own class provides vtbl ptr */
2547 for (i
= TYPE_NFIELDS (t
) - 1;
2548 i
>= TYPE_N_BASECLASSES (t
);
2551 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2552 sizeof (vptr_name
) - 1))
2554 TYPE_VPTR_FIELDNO (type
) = i
;
2558 /* Virtual function table field not found. */
2559 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2564 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2575 attach_fn_fields_to_type (fip
, type
)
2576 struct field_info
*fip
;
2577 register struct type
*type
;
2581 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2583 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2585 /* @@ Memory leak on objfile -> type_obstack? */
2588 TYPE_NFN_FIELDS_TOTAL (type
) +=
2589 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2592 for (n
= TYPE_NFN_FIELDS (type
);
2593 fip
-> fnlist
!= NULL
;
2594 fip
-> fnlist
= fip
-> fnlist
-> next
)
2596 --n
; /* Circumvent Sun3 compiler bug */
2597 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2602 /* Create the vector of fields, and record how big it is.
2603 We need this info to record proper virtual function table information
2604 for this class's virtual functions. */
2607 attach_fields_to_type (fip
, type
, objfile
)
2608 struct field_info
*fip
;
2609 register struct type
*type
;
2610 struct objfile
*objfile
;
2612 register int nfields
= 0;
2613 register int non_public_fields
= 0;
2614 register struct nextfield
*scan
;
2616 /* Count up the number of fields that we have, as well as taking note of
2617 whether or not there are any non-public fields, which requires us to
2618 allocate and build the private_field_bits and protected_field_bits
2621 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2624 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2626 non_public_fields
++;
2630 /* Now we know how many fields there are, and whether or not there are any
2631 non-public fields. Record the field count, allocate space for the
2632 array of fields, and create blank visibility bitfields if necessary. */
2634 TYPE_NFIELDS (type
) = nfields
;
2635 TYPE_FIELDS (type
) = (struct field
*)
2636 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2637 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2639 if (non_public_fields
)
2641 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2643 TYPE_FIELD_PRIVATE_BITS (type
) =
2644 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2645 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2647 TYPE_FIELD_PROTECTED_BITS (type
) =
2648 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2649 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2652 /* Copy the saved-up fields into the field vector. Start from the head
2653 of the list, adding to the tail of the field array, so that they end
2654 up in the same order in the array in which they were added to the list. */
2656 while (nfields
-- > 0)
2658 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2659 switch (fip
-> list
-> visibility
)
2661 case VISIBILITY_PRIVATE
:
2662 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2665 case VISIBILITY_PROTECTED
:
2666 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2669 case VISIBILITY_PUBLIC
:
2673 /* Should warn about this unknown visibility? */
2676 fip
-> list
= fip
-> list
-> next
;
2681 /* Read the description of a structure (or union type) and return an object
2682 describing the type.
2684 PP points to a character pointer that points to the next unconsumed token
2685 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2686 *PP will point to "4a:1,0,32;;".
2688 TYPE points to an incomplete type that needs to be filled in.
2690 OBJFILE points to the current objfile from which the stabs information is
2691 being read. (Note that it is redundant in that TYPE also contains a pointer
2692 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2695 static struct type
*
2696 read_struct_type (pp
, type
, objfile
)
2699 struct objfile
*objfile
;
2701 struct cleanup
*back_to
;
2702 struct field_info fi
;
2707 back_to
= make_cleanup (null_cleanup
, 0);
2709 INIT_CPLUS_SPECIFIC (type
);
2710 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2712 /* First comes the total size in bytes. */
2716 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2718 return error_type (pp
);
2721 /* Now read the baseclasses, if any, read the regular C struct or C++
2722 class member fields, attach the fields to the type, read the C++
2723 member functions, attach them to the type, and then read any tilde
2724 field (baseclass specifier for the class holding the main vtable). */
2726 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2727 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2728 || !attach_fields_to_type (&fi
, type
, objfile
)
2729 || !read_member_functions (&fi
, pp
, type
, objfile
)
2730 || !attach_fn_fields_to_type (&fi
, type
)
2731 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2733 do_cleanups (back_to
);
2734 return (error_type (pp
));
2737 do_cleanups (back_to
);
2741 /* Read a definition of an array type,
2742 and create and return a suitable type object.
2743 Also creates a range type which represents the bounds of that
2746 static struct type
*
2747 read_array_type (pp
, type
, objfile
)
2749 register struct type
*type
;
2750 struct objfile
*objfile
;
2752 struct type
*index_type
, *element_type
, *range_type
;
2757 /* Format of an array type:
2758 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2761 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2762 for these, produce a type like float[][]. */
2764 index_type
= read_type (pp
, objfile
);
2766 /* Improper format of array type decl. */
2767 return error_type (pp
);
2770 if (!(**pp
>= '0' && **pp
<= '9'))
2775 lower
= read_huge_number (pp
, ';', &nbits
);
2777 return error_type (pp
);
2779 if (!(**pp
>= '0' && **pp
<= '9'))
2784 upper
= read_huge_number (pp
, ';', &nbits
);
2786 return error_type (pp
);
2788 element_type
= read_type (pp
, objfile
);
2797 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2798 type
= create_array_type (type
, element_type
, range_type
);
2800 /* If we have an array whose element type is not yet known, but whose
2801 bounds *are* known, record it to be adjusted at the end of the file. */
2803 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2805 add_undefined_type (type
);
2812 /* Read a definition of an enumeration type,
2813 and create and return a suitable type object.
2814 Also defines the symbols that represent the values of the type. */
2816 static struct type
*
2817 read_enum_type (pp
, type
, objfile
)
2819 register struct type
*type
;
2820 struct objfile
*objfile
;
2825 register struct symbol
*sym
;
2827 struct pending
**symlist
;
2828 struct pending
*osyms
, *syms
;
2832 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2833 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2834 to do? For now, force all enum values to file scope. */
2835 if (within_function
)
2836 symlist
= &local_symbols
;
2839 symlist
= &file_symbols
;
2841 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2843 /* Read the value-names and their values.
2844 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2845 A semicolon or comma instead of a NAME means the end. */
2846 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2849 STABS_CONTINUE (pp
);
2851 while (*p
!= ':') p
++;
2852 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2854 n
= read_huge_number (pp
, ',', &nbits
);
2856 return error_type (pp
);
2858 sym
= (struct symbol
*)
2859 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2860 memset (sym
, 0, sizeof (struct symbol
));
2861 SYMBOL_NAME (sym
) = name
;
2862 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2863 SYMBOL_CLASS (sym
) = LOC_CONST
;
2864 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2865 SYMBOL_VALUE (sym
) = n
;
2866 add_symbol_to_list (sym
, symlist
);
2871 (*pp
)++; /* Skip the semicolon. */
2873 /* Now fill in the fields of the type-structure. */
2875 TYPE_LENGTH (type
) = sizeof (int);
2876 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2877 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2878 TYPE_NFIELDS (type
) = nsyms
;
2879 TYPE_FIELDS (type
) = (struct field
*)
2880 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2881 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2883 /* Find the symbols for the values and put them into the type.
2884 The symbols can be found in the symlist that we put them on
2885 to cause them to be defined. osyms contains the old value
2886 of that symlist; everything up to there was defined by us. */
2887 /* Note that we preserve the order of the enum constants, so
2888 that in something like "enum {FOO, LAST_THING=FOO}" we print
2889 FOO, not LAST_THING. */
2891 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2896 for (; j
< syms
->nsyms
; j
++,n
++)
2898 struct symbol
*xsym
= syms
->symbol
[j
];
2899 SYMBOL_TYPE (xsym
) = type
;
2900 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2901 TYPE_FIELD_VALUE (type
, n
) = 0;
2902 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2903 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2910 /* This screws up perfectly good C programs with enums. FIXME. */
2911 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2912 if(TYPE_NFIELDS(type
) == 2 &&
2913 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2914 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2915 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2916 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2917 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2923 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2924 typedefs in every file (for int, long, etc):
2926 type = b <signed> <width>; <offset>; <nbits>
2927 signed = u or s. Possible c in addition to u or s (for char?).
2928 offset = offset from high order bit to start bit of type.
2929 width is # bytes in object of this type, nbits is # bits in type.
2931 The width/offset stuff appears to be for small objects stored in
2932 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2935 static struct type
*
2936 read_sun_builtin_type (pp
, typenums
, objfile
)
2939 struct objfile
*objfile
;
2954 return error_type (pp
);
2958 /* For some odd reason, all forms of char put a c here. This is strange
2959 because no other type has this honor. We can safely ignore this because
2960 we actually determine 'char'acterness by the number of bits specified in
2966 /* The first number appears to be the number of bytes occupied
2967 by this type, except that unsigned short is 4 instead of 2.
2968 Since this information is redundant with the third number,
2969 we will ignore it. */
2970 read_huge_number (pp
, ';', &nbits
);
2972 return error_type (pp
);
2974 /* The second number is always 0, so ignore it too. */
2975 read_huge_number (pp
, ';', &nbits
);
2977 return error_type (pp
);
2979 /* The third number is the number of bits for this type. */
2980 type_bits
= read_huge_number (pp
, 0, &nbits
);
2982 return error_type (pp
);
2985 /* FIXME. Here we should just be able to make a type of the right
2986 number of bits and signedness. FIXME. */
2988 if (type_bits
== TARGET_LONG_LONG_BIT
)
2989 return (lookup_fundamental_type (objfile
,
2990 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
2992 if (type_bits
== TARGET_INT_BIT
)
2994 /* FIXME -- the only way to distinguish `int' from `long'
2995 is to look at its name! */
2998 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
2999 return lookup_fundamental_type (objfile
, FT_LONG
);
3001 return lookup_fundamental_type (objfile
, FT_INTEGER
);
3005 if (long_kludge_name
3006 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
3007 long_kludge_name
[9] == 'l' /* long */)
3008 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
3009 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
3011 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
3015 if (type_bits
== TARGET_SHORT_BIT
)
3016 return (lookup_fundamental_type (objfile
,
3017 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
3019 if (type_bits
== TARGET_CHAR_BIT
)
3020 return (lookup_fundamental_type (objfile
,
3021 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
3024 return lookup_fundamental_type (objfile
, FT_VOID
);
3026 return error_type (pp
);
3028 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3029 type_bits
/ TARGET_CHAR_BIT
,
3030 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3035 static struct type
*
3036 read_sun_floating_type (pp
, typenums
, objfile
)
3039 struct objfile
*objfile
;
3045 /* The first number has more details about the type, for example
3047 details
= read_huge_number (pp
, ';', &nbits
);
3049 return error_type (pp
);
3051 /* The second number is the number of bytes occupied by this type */
3052 nbytes
= read_huge_number (pp
, ';', &nbits
);
3054 return error_type (pp
);
3056 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3057 || details
== NF_COMPLEX32
)
3058 /* This is a type we can't handle, but we do know the size.
3059 We also will be able to give it a name. */
3060 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3062 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3065 /* Read a number from the string pointed to by *PP.
3066 The value of *PP is advanced over the number.
3067 If END is nonzero, the character that ends the
3068 number must match END, or an error happens;
3069 and that character is skipped if it does match.
3070 If END is zero, *PP is left pointing to that character.
3072 If the number fits in a long, set *BITS to 0 and return the value.
3073 If not, set *BITS to be the number of bits in the number and return 0.
3075 If encounter garbage, set *BITS to -1 and return 0. */
3078 read_huge_number (pp
, end
, bits
)
3098 /* Leading zero means octal. GCC uses this to output values larger
3099 than an int (because that would be hard in decimal). */
3106 upper_limit
= LONG_MAX
/ radix
;
3107 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3109 if (n
<= upper_limit
)
3112 n
+= c
- '0'; /* FIXME this overflows anyway */
3117 /* This depends on large values being output in octal, which is
3124 /* Ignore leading zeroes. */
3128 else if (c
== '2' || c
== '3')
3154 /* Large decimal constants are an error (because it is hard to
3155 count how many bits are in them). */
3161 /* -0x7f is the same as 0x80. So deal with it by adding one to
3162 the number of bits. */
3174 /* It's *BITS which has the interesting information. */
3178 static struct type
*
3179 read_range_type (pp
, typenums
, objfile
)
3182 struct objfile
*objfile
;
3188 struct type
*result_type
;
3189 struct type
*index_type
;
3191 /* First comes a type we are a subrange of.
3192 In C it is usually 0, 1 or the type being defined. */
3193 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3194 not just a type number. */
3195 if (read_type_number (pp
, rangenums
) != 0)
3196 return error_type (pp
);
3197 self_subrange
= (rangenums
[0] == typenums
[0] &&
3198 rangenums
[1] == typenums
[1]);
3200 /* A semicolon should now follow; skip it. */
3204 /* The remaining two operands are usually lower and upper bounds
3205 of the range. But in some special cases they mean something else. */
3206 n2
= read_huge_number (pp
, ';', &n2bits
);
3207 n3
= read_huge_number (pp
, ';', &n3bits
);
3209 if (n2bits
== -1 || n3bits
== -1)
3210 return error_type (pp
);
3212 /* If limits are huge, must be large integral type. */
3213 if (n2bits
!= 0 || n3bits
!= 0)
3215 char got_signed
= 0;
3216 char got_unsigned
= 0;
3217 /* Number of bits in the type. */
3220 /* Range from 0 to <large number> is an unsigned large integral type. */
3221 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3226 /* Range from <large number> to <large number>-1 is a large signed
3228 else if (n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3234 if (got_signed
|| got_unsigned
)
3236 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3237 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3241 return error_type (pp
);
3244 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3245 if (self_subrange
&& n2
== 0 && n3
== 0)
3246 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3248 /* If n3 is zero and n2 is not, we want a floating type,
3249 and n2 is the width in bytes.
3251 Fortran programs appear to use this for complex types also,
3252 and they give no way to distinguish between double and single-complex!
3254 GDB does not have complex types.
3256 Just return the complex as a float of that size. It won't work right
3257 for the complex values, but at least it makes the file loadable.
3259 FIXME, we may be able to distinguish these by their names. FIXME. */
3261 if (n3
== 0 && n2
> 0)
3263 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3266 /* If the upper bound is -1, it must really be an unsigned int. */
3268 else if (n2
== 0 && n3
== -1)
3270 /* It is unsigned int or unsigned long. */
3271 /* GCC sometimes uses this for long long too. We could
3272 distinguish it by the name, but we don't. */
3273 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3274 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3277 /* Special case: char is defined (Who knows why) as a subrange of
3278 itself with range 0-127. */
3279 else if (self_subrange
&& n2
== 0 && n3
== 127)
3280 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3282 /* We used to do this only for subrange of self or subrange of int. */
3286 /* n3 actually gives the size. */
3287 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3290 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3292 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3294 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3295 "unsigned long", and we already checked for that,
3296 so don't need to test for it here. */
3298 /* I think this is for Convex "long long". Since I don't know whether
3299 Convex sets self_subrange, I also accept that particular size regardless
3300 of self_subrange. */
3301 else if (n3
== 0 && n2
< 0
3303 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3304 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3305 else if (n2
== -n3
-1)
3308 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3310 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3311 if (n3
== 0x7fffffff)
3312 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3315 /* We have a real range type on our hands. Allocate space and
3316 return a real pointer. */
3318 /* At this point I don't have the faintest idea how to deal with
3319 a self_subrange type; I'm going to assume that this is used
3320 as an idiom, and that all of them are special cases. So . . . */
3322 return error_type (pp
);
3324 index_type
= *dbx_lookup_type (rangenums
);
3325 if (index_type
== NULL
)
3327 /* Does this actually ever happen? Is that why we are worrying
3328 about dealing with it rather than just calling error_type? */
3330 static struct type
*range_type_index
;
3332 complain (&range_type_base_complaint
, rangenums
[1]);
3333 if (range_type_index
== NULL
)
3335 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3336 0, "range type index type", NULL
);
3337 index_type
= range_type_index
;
3340 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3341 return (result_type
);
3344 /* Read in an argument list. This is a list of types, separated by commas
3345 and terminated with END. Return the list of types read in, or (struct type
3346 **)-1 if there is an error. */
3348 static struct type
**
3349 read_args (pp
, end
, objfile
)
3352 struct objfile
*objfile
;
3354 /* FIXME! Remove this arbitrary limit! */
3355 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3361 /* Invalid argument list: no ','. */
3362 return (struct type
**)-1;
3364 STABS_CONTINUE (pp
);
3365 types
[n
++] = read_type (pp
, objfile
);
3367 (*pp
)++; /* get past `end' (the ':' character) */
3371 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3373 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3375 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3376 memset (rval
+ n
, 0, sizeof (struct type
*));
3380 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3382 memcpy (rval
, types
, n
* sizeof (struct type
*));
3386 /* Add a common block's start address to the offset of each symbol
3387 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3388 the common block name). */
3391 fix_common_block (sym
, valu
)
3395 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3396 for ( ; next
; next
= next
->next
)
3399 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3400 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3406 /* What about types defined as forward references inside of a small lexical
3408 /* Add a type to the list of undefined types to be checked through
3409 once this file has been read in. */
3412 add_undefined_type (type
)
3415 if (undef_types_length
== undef_types_allocated
)
3417 undef_types_allocated
*= 2;
3418 undef_types
= (struct type
**)
3419 xrealloc ((char *) undef_types
,
3420 undef_types_allocated
* sizeof (struct type
*));
3422 undef_types
[undef_types_length
++] = type
;
3425 /* Go through each undefined type, see if it's still undefined, and fix it
3426 up if possible. We have two kinds of undefined types:
3428 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3429 Fix: update array length using the element bounds
3430 and the target type's length.
3431 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3432 yet defined at the time a pointer to it was made.
3433 Fix: Do a full lookup on the struct/union tag. */
3435 cleanup_undefined_types ()
3439 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3441 switch (TYPE_CODE (*type
))
3444 case TYPE_CODE_STRUCT
:
3445 case TYPE_CODE_UNION
:
3446 case TYPE_CODE_ENUM
:
3448 /* Check if it has been defined since. */
3449 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3451 struct pending
*ppt
;
3453 /* Name of the type, without "struct" or "union" */
3454 char *typename
= TYPE_TAG_NAME (*type
);
3456 if (typename
== NULL
)
3458 static struct complaint msg
= {"need a type name", 0, 0};
3462 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3464 for (i
= 0; i
< ppt
->nsyms
; i
++)
3466 struct symbol
*sym
= ppt
->symbol
[i
];
3468 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3469 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3470 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3472 && STREQ (SYMBOL_NAME (sym
), typename
))
3474 memcpy (*type
, SYMBOL_TYPE (sym
),
3475 sizeof (struct type
));
3483 case TYPE_CODE_ARRAY
:
3485 struct type
*range_type
;
3488 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3490 if (TYPE_NFIELDS (*type
) != 1)
3492 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3493 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3496 /* Now recompute the length of the array type, based on its
3497 number of elements and the target type's length. */
3498 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3499 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3500 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3501 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3508 static struct complaint msg
= {"\
3509 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3510 complain (&msg
, TYPE_CODE (*type
));
3515 undef_types_length
= 0;
3518 /* Scan through all of the global symbols defined in the object file,
3519 assigning values to the debugging symbols that need to be assigned
3520 to. Get these symbols from the minimal symbol table. */
3523 scan_file_globals (objfile
)
3524 struct objfile
*objfile
;
3527 struct minimal_symbol
*msymbol
;
3528 struct symbol
*sym
, *prev
;
3530 if (objfile
->msymbols
== 0) /* Beware the null file. */
3533 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3539 /* Get the hash index and check all the symbols
3540 under that hash index. */
3542 hash
= hashname (SYMBOL_NAME (msymbol
));
3544 for (sym
= global_sym_chain
[hash
]; sym
;)
3546 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3547 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3549 /* Splice this symbol out of the hash chain and
3550 assign the value we have to it. */
3553 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3557 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3560 /* Check to see whether we need to fix up a common block. */
3561 /* Note: this code might be executed several times for
3562 the same symbol if there are multiple references. */
3564 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3566 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3570 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3575 sym
= SYMBOL_VALUE_CHAIN (prev
);
3579 sym
= global_sym_chain
[hash
];
3585 sym
= SYMBOL_VALUE_CHAIN (sym
);
3591 /* Initialize anything that needs initializing when starting to read
3592 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3600 /* Initialize anything that needs initializing when a completely new
3601 symbol file is specified (not just adding some symbols from another
3602 file, e.g. a shared library). */
3605 stabsread_new_init ()
3607 /* Empty the hash table of global syms looking for values. */
3608 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3611 /* Initialize anything that needs initializing at the same time as
3612 start_symtab() is called. */
3616 global_stabs
= NULL
; /* AIX COFF */
3617 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3618 n_this_object_header_files
= 1;
3619 type_vector_length
= 0;
3620 type_vector
= (struct type
**) 0;
3623 /* Call after end_symtab() */
3629 free ((char *) type_vector
);
3632 type_vector_length
= 0;
3633 previous_stab_code
= 0;
3637 finish_global_stabs (objfile
)
3638 struct objfile
*objfile
;
3642 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3643 free ((PTR
) global_stabs
);
3644 global_stabs
= NULL
;
3648 /* Initializer for this module */
3651 _initialize_stabsread ()
3653 undef_types_allocated
= 20;
3654 undef_types_length
= 0;
3655 undef_types
= (struct type
**)
3656 xmalloc (undef_types_allocated
* sizeof (struct type
*));