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"
39 /* Ask stabsread.h to define the vars it normally declares `extern'. */
41 #include "stabsread.h" /* Our own declarations */
44 /* The routines that read and process a complete stabs for a C struct or
45 C++ class pass lists of data member fields and lists of member function
46 fields in an instance of a field_info structure, as defined below.
47 This is part of some reorganization of low level C++ support and is
48 expected to eventually go away... (FIXME) */
54 struct nextfield
*next
;
58 struct next_fnfieldlist
60 struct next_fnfieldlist
*next
;
61 struct fn_fieldlist fn_fieldlist
;
66 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
68 static long read_huge_number
PARAMS ((char **, int, int *));
70 static struct type
*error_type
PARAMS ((char **));
73 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
77 fix_common_block
PARAMS ((struct symbol
*, int));
80 read_type_number
PARAMS ((char **, int *));
83 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
86 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
89 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
92 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
95 rs6000_builtin_type
PARAMS ((int));
98 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
102 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
106 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
110 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
114 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
117 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
121 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
124 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
126 static struct type
**
127 read_args
PARAMS ((char **, int, struct objfile
*));
130 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
133 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
134 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
136 /* Define this as 1 if a pcc declaration of a char or short argument
137 gives the correct address. Otherwise assume pcc gives the
138 address of the corresponding int, which is not the same on a
139 big-endian machine. */
141 #ifndef BELIEVE_PCC_PROMOTION
142 #define BELIEVE_PCC_PROMOTION 0
146 /* I think this can go away, all current uses have been removed.
147 GCC emits a few crazy types which can only be distinguished by the
148 name (complex, long long on some machines), but I'd say fix GCC. */
150 /* During some calls to read_type (and thus to read_range_type), this
151 contains the name of the type being defined. Range types are only
152 used in C as basic types. We use the name to distinguish the otherwise
153 identical basic types "int" and "long" and their unsigned versions.
154 FIXME, this should disappear with better type management. */
156 static char *long_kludge_name
;
160 struct complaint dbx_class_complaint
=
162 "encountered DBX-style class variable debugging information.\n\
163 You seem to have compiled your program with \
164 \"g++ -g0\" instead of \"g++ -g\".\n\
165 Therefore GDB will not know about your class variables", 0, 0
169 struct complaint invalid_cpp_abbrev_complaint
=
170 {"invalid C++ abbreviation `%s'", 0, 0};
172 struct complaint invalid_cpp_type_complaint
=
173 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
175 struct complaint member_fn_complaint
=
176 {"member function type missing, got '%c'", 0, 0};
178 struct complaint const_vol_complaint
=
179 {"const/volatile indicator missing, got '%c'", 0, 0};
181 struct complaint error_type_complaint
=
182 {"debug info mismatch between compiler and debugger", 0, 0};
184 struct complaint invalid_member_complaint
=
185 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
187 struct complaint range_type_base_complaint
=
188 {"base type %d of range type is not defined", 0, 0};
190 struct complaint reg_value_complaint
=
191 {"register number too large in symbol %s", 0, 0};
193 struct complaint vtbl_notfound_complaint
=
194 {"virtual function table pointer not found when defining class `%s'", 0, 0};
196 struct complaint unrecognized_cplus_name_complaint
=
197 {"Unknown C++ symbol name `%s'", 0, 0};
199 struct complaint rs6000_builtin_complaint
=
200 {"Unknown builtin type %d", 0, 0};
202 struct complaint stabs_general_complaint
=
205 /* Make a list of forward references which haven't been defined. */
207 static struct type
**undef_types
;
208 static int undef_types_allocated
;
209 static int undef_types_length
;
211 /* Check for and handle cretinous stabs symbol name continuation! */
212 #define STABS_CONTINUE(pp) \
214 if (**(pp) == '\\') *(pp) = next_symbol_text (); \
218 /* This is used by other symbol readers besides stabs, so for cleanliness
219 should probably be in buildsym.c. */
225 register char *p
= name
;
226 register int total
= p
[0];
241 /* Ensure result is positive. */
244 total
+= (1000 << 6);
246 return (total
% HASHSIZE
);
250 /* Look up a dbx type-number pair. Return the address of the slot
251 where the type for that number-pair is stored.
252 The number-pair is in TYPENUMS.
254 This can be used for finding the type associated with that pair
255 or for associating a new type with the pair. */
258 dbx_lookup_type (typenums
)
261 register int filenum
= typenums
[0];
262 register int index
= typenums
[1];
264 register int real_filenum
;
265 register struct header_file
*f
;
268 if (filenum
== -1) /* -1,-1 is for temporary types. */
271 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
273 static struct complaint msg
= {"\
274 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
276 complain (&msg
, filenum
, index
, symnum
);
284 /* Caller wants address of address of type. We think
285 that negative (rs6k builtin) types will never appear as
286 "lvalues", (nor should they), so we stuff the real type
287 pointer into a temp, and return its address. If referenced,
288 this will do the right thing. */
289 static struct type
*temp_type
;
291 temp_type
= rs6000_builtin_type(index
);
295 /* Type is defined outside of header files.
296 Find it in this object file's type vector. */
297 if (index
>= type_vector_length
)
299 old_len
= type_vector_length
;
302 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
303 type_vector
= (struct type
**)
304 malloc (type_vector_length
* sizeof (struct type
*));
306 while (index
>= type_vector_length
)
308 type_vector_length
*= 2;
310 type_vector
= (struct type
**)
311 xrealloc ((char *) type_vector
,
312 (type_vector_length
* sizeof (struct type
*)));
313 memset (&type_vector
[old_len
], 0,
314 (type_vector_length
- old_len
) * sizeof (struct type
*));
316 return (&type_vector
[index
]);
320 real_filenum
= this_object_header_files
[filenum
];
322 if (real_filenum
>= n_header_files
)
324 struct type
*temp_type
;
325 struct type
**temp_type_p
;
327 warning ("GDB internal error: bad real_filenum");
330 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
331 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
332 *temp_type_p
= temp_type
;
336 f
= &header_files
[real_filenum
];
338 f_orig_length
= f
->length
;
339 if (index
>= f_orig_length
)
341 while (index
>= f
->length
)
345 f
->vector
= (struct type
**)
346 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
347 memset (&f
->vector
[f_orig_length
], 0,
348 (f
->length
- f_orig_length
) * sizeof (struct type
*));
350 return (&f
->vector
[index
]);
354 /* Make sure there is a type allocated for type numbers TYPENUMS
355 and return the type object.
356 This can create an empty (zeroed) type object.
357 TYPENUMS may be (-1, -1) to return a new type object that is not
358 put into the type vector, and so may not be referred to by number. */
361 dbx_alloc_type (typenums
, objfile
)
363 struct objfile
*objfile
;
365 register struct type
**type_addr
;
367 if (typenums
[0] == -1)
369 return (alloc_type (objfile
));
372 type_addr
= dbx_lookup_type (typenums
);
374 /* If we are referring to a type not known at all yet,
375 allocate an empty type for it.
376 We will fill it in later if we find out how. */
379 *type_addr
= alloc_type (objfile
);
385 /* for all the stabs in a given stab vector, build appropriate types
386 and fix their symbols in given symbol vector. */
389 patch_block_stabs (symbols
, stabs
, objfile
)
390 struct pending
*symbols
;
391 struct pending_stabs
*stabs
;
392 struct objfile
*objfile
;
402 /* for all the stab entries, find their corresponding symbols and
403 patch their types! */
405 for (ii
= 0; ii
< stabs
->count
; ++ii
)
407 name
= stabs
->stab
[ii
];
408 pp
= (char*) strchr (name
, ':');
409 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
412 /* On xcoff, if a global is defined and never referenced,
413 ld will remove it from the executable. There is then
414 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
415 sym
= (struct symbol
*)
416 obstack_alloc (&objfile
->symbol_obstack
,
417 sizeof (struct symbol
));
419 memset (sym
, 0, sizeof (struct symbol
));
420 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
421 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
423 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
425 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
427 /* I don't think the linker does this with functions,
428 so as far as I know this is never executed.
429 But it doesn't hurt to check. */
431 lookup_function_type (read_type (&pp
, objfile
));
435 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
437 add_symbol_to_list (sym
, &global_symbols
);
442 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
445 lookup_function_type (read_type (&pp
, objfile
));
449 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
457 /* Read a number by which a type is referred to in dbx data,
458 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
459 Just a single number N is equivalent to (0,N).
460 Return the two numbers by storing them in the vector TYPENUMS.
461 TYPENUMS will then be used as an argument to dbx_lookup_type.
463 Returns 0 for success, -1 for error. */
466 read_type_number (pp
, typenums
)
468 register int *typenums
;
474 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
475 if (nbits
!= 0) return -1;
476 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
477 if (nbits
!= 0) return -1;
482 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
483 if (nbits
!= 0) return -1;
489 /* To handle GNU C++ typename abbreviation, we need to be able to
490 fill in a type's name as soon as space for that type is allocated.
491 `type_synonym_name' is the name of the type being allocated.
492 It is cleared as soon as it is used (lest all allocated types
495 static char *type_synonym_name
;
499 define_symbol (valu
, string
, desc
, type
, objfile
)
504 struct objfile
*objfile
;
506 register struct symbol
*sym
;
507 char *p
= (char *) strchr (string
, ':');
512 /* We would like to eliminate nameless symbols, but keep their types.
513 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
514 to type 2, but, should not create a symbol to address that type. Since
515 the symbol will be nameless, there is no way any user can refer to it. */
519 /* Ignore syms with empty names. */
523 /* Ignore old-style symbols from cc -go */
527 /* If a nameless stab entry, all we need is the type, not the symbol.
528 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
529 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
531 sym
= (struct symbol
*)
532 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
533 memset (sym
, 0, sizeof (struct symbol
));
535 if (processing_gcc_compilation
)
537 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
538 number of bytes occupied by a type or object, which we ignore. */
539 SYMBOL_LINE(sym
) = desc
;
543 SYMBOL_LINE(sym
) = 0; /* unknown */
546 if (string
[0] == CPLUS_MARKER
)
548 /* Special GNU C++ names. */
552 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
553 &objfile
-> symbol_obstack
);
556 case 'v': /* $vtbl_ptr_type */
557 /* Was: SYMBOL_NAME (sym) = "vptr"; */
561 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
562 &objfile
-> symbol_obstack
);
566 /* This was an anonymous type that was never fixed up. */
570 complain (&unrecognized_cplus_name_complaint
, string
);
571 goto normal
; /* Do *something* with it */
577 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
578 SYMBOL_NAME (sym
) = (char *)
579 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
580 /* Open-coded bcopy--saves function call time. */
581 /* FIXME: Does it really? Try replacing with simple strcpy and
582 try it on an executable with a large symbol table. */
584 register char *p1
= string
;
585 register char *p2
= SYMBOL_NAME (sym
);
593 /* If this symbol is from a C++ compilation, then attempt to cache the
594 demangled form for future reference. This is a typical time versus
595 space tradeoff, that was decided in favor of time because it sped up
596 C++ symbol lookups by a factor of about 20. */
598 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
602 /* Determine the type of name being defined. */
604 /* Getting GDB to correctly skip the symbol on an undefined symbol
605 descriptor and not ever dump core is a very dodgy proposition if
606 we do things this way. I say the acorn RISC machine can just
607 fix their compiler. */
608 /* The Acorn RISC machine's compiler can put out locals that don't
609 start with "234=" or "(3,4)=", so assume anything other than the
610 deftypes we know how to handle is a local. */
611 if (!strchr ("cfFGpPrStTvVXCR", *p
))
613 if (isdigit (*p
) || *p
== '(' || *p
== '-')
622 /* c is a special case, not followed by a type-number.
623 SYMBOL:c=iVALUE for an integer constant symbol.
624 SYMBOL:c=rVALUE for a floating constant symbol.
625 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
626 e.g. "b:c=e6,0" for "const b = blob1"
627 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
630 SYMBOL_CLASS (sym
) = LOC_CONST
;
631 SYMBOL_TYPE (sym
) = error_type (&p
);
632 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
633 add_symbol_to_list (sym
, &file_symbols
);
644 /* FIXME: lookup_fundamental_type is a hack. We should be
645 creating a type especially for the type of float constants.
646 Problem is, what type should it be? We currently have to
647 read this in host floating point format, but what type
648 represents a host format "double"?
650 Also, what should the name of this type be? Should we
651 be using 'S' constants (see stabs.texinfo) instead? */
653 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
656 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (double));
657 memcpy (dbl_valu
, &d
, sizeof (double));
658 /* Put it in target byte order, but it's still in host
659 floating point format. */
660 SWAP_TARGET_AND_HOST (dbl_valu
, sizeof (double));
661 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
662 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
667 /* Defining integer constants this way is kind of silly,
668 since 'e' constants allows the compiler to give not
669 only the value, but the type as well. C has at least
670 int, long, unsigned int, and long long as constant
671 types; other languages probably should have at least
672 unsigned as well as signed constants. */
674 /* We just need one int constant type for all objfiles.
675 It doesn't depend on languages or anything (arguably its
676 name should be a language-specific name for a type of
677 that size, but I'm inclined to say that if the compiler
678 wants a nice name for the type, it can use 'e'). */
679 static struct type
*int_const_type
;
681 /* Yes, this is as long as a *host* int. That is because we
683 if (int_const_type
== NULL
)
685 init_type (TYPE_CODE_INT
,
686 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
688 (struct objfile
*)NULL
);
689 SYMBOL_TYPE (sym
) = int_const_type
;
690 SYMBOL_VALUE (sym
) = atoi (p
);
691 SYMBOL_CLASS (sym
) = LOC_CONST
;
695 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
696 can be represented as integral.
697 e.g. "b:c=e6,0" for "const b = blob1"
698 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
700 SYMBOL_CLASS (sym
) = LOC_CONST
;
701 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
705 SYMBOL_TYPE (sym
) = error_type (&p
);
710 /* If the value is too big to fit in an int (perhaps because
711 it is unsigned), or something like that, we silently get
712 a bogus value. The type and everything else about it is
713 correct. Ideally, we should be using whatever we have
714 available for parsing unsigned and long long values,
716 SYMBOL_VALUE (sym
) = atoi (p
);
721 SYMBOL_CLASS (sym
) = LOC_CONST
;
722 SYMBOL_TYPE (sym
) = error_type (&p
);
725 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
726 add_symbol_to_list (sym
, &file_symbols
);
730 /* The name of a caught exception. */
731 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
732 SYMBOL_CLASS (sym
) = LOC_LABEL
;
733 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
734 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
735 add_symbol_to_list (sym
, &local_symbols
);
739 /* A static function definition. */
740 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
741 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
742 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
743 add_symbol_to_list (sym
, &file_symbols
);
744 /* fall into process_function_types. */
746 process_function_types
:
747 /* Function result types are described as the result type in stabs.
748 We need to convert this to the function-returning-type-X type
749 in GDB. E.g. "int" is converted to "function returning int". */
750 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
753 /* This code doesn't work -- it needs to realloc and can't. */
754 /* Attempt to set up to record a function prototype... */
755 struct type
*new = alloc_type (objfile
);
757 /* Generate a template for the type of this function. The
758 types of the arguments will be added as we read the symbol
760 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
761 SYMBOL_TYPE(sym
) = new;
762 TYPE_OBJFILE (new) = objfile
;
763 in_function_type
= new;
765 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
768 /* fall into process_prototype_types */
770 process_prototype_types
:
771 /* Sun acc puts declared types of arguments here. We don't care
772 about their actual types (FIXME -- we should remember the whole
773 function prototype), but the list may define some new types
774 that we have to remember, so we must scan it now. */
777 read_type (&p
, objfile
);
782 /* A global function definition. */
783 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
784 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
785 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
786 add_symbol_to_list (sym
, &global_symbols
);
787 goto process_function_types
;
790 /* For a class G (global) symbol, it appears that the
791 value is not correct. It is necessary to search for the
792 corresponding linker definition to find the value.
793 These definitions appear at the end of the namelist. */
794 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
795 i
= hashname (SYMBOL_NAME (sym
));
796 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
797 global_sym_chain
[i
] = sym
;
798 SYMBOL_CLASS (sym
) = LOC_STATIC
;
799 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
800 add_symbol_to_list (sym
, &global_symbols
);
803 /* This case is faked by a conditional above,
804 when there is no code letter in the dbx data.
805 Dbx data never actually contains 'l'. */
807 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
808 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
809 SYMBOL_VALUE (sym
) = valu
;
810 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
811 add_symbol_to_list (sym
, &local_symbols
);
816 /* pF is a two-letter code that means a function parameter in Fortran.
817 The type-number specifies the type of the return value.
818 Translate it into a pointer-to-function type. */
822 = lookup_pointer_type
823 (lookup_function_type (read_type (&p
, objfile
)));
826 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
828 /* Normally this is a parameter, a LOC_ARG. On the i960, it
829 can also be a LOC_LOCAL_ARG depending on symbol type. */
830 #ifndef DBX_PARM_SYMBOL_CLASS
831 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
834 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
835 SYMBOL_VALUE (sym
) = valu
;
836 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
838 /* This doesn't work yet. */
839 add_param_to_type (&in_function_type
, sym
);
841 add_symbol_to_list (sym
, &local_symbols
);
843 /* If it's gcc-compiled, if it says `short', believe it. */
844 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
847 #if !BELIEVE_PCC_PROMOTION
849 /* This is the signed type which arguments get promoted to. */
850 static struct type
*pcc_promotion_type
;
851 /* This is the unsigned type which arguments get promoted to. */
852 static struct type
*pcc_unsigned_promotion_type
;
854 /* Call it "int" because this is mainly C lossage. */
855 if (pcc_promotion_type
== NULL
)
857 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
860 if (pcc_unsigned_promotion_type
== NULL
)
861 pcc_unsigned_promotion_type
=
862 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
863 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
865 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
866 /* This macro is defined on machines (e.g. sparc) where
867 we should believe the type of a PCC 'short' argument,
868 but shouldn't believe the address (the address is
869 the address of the corresponding int). Note that
870 this is only different from the BELIEVE_PCC_PROMOTION
871 case on big-endian machines.
873 My guess is that this correction, as opposed to changing
874 the parameter to an 'int' (as done below, for PCC
875 on most machines), is the right thing to do
876 on all machines, but I don't want to risk breaking
877 something that already works. On most PCC machines,
878 the sparc problem doesn't come up because the calling
879 function has to zero the top bytes (not knowing whether
880 the called function wants an int or a short), so there
881 is no practical difference between an int and a short
882 (except perhaps what happens when the GDB user types
883 "print short_arg = 0x10000;").
885 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
886 actually produces the correct address (we don't need to fix it
887 up). I made this code adapt so that it will offset the symbol
888 if it was pointing at an int-aligned location and not
889 otherwise. This way you can use the same gdb for 4.0.x and
892 If the parameter is shorter than an int, and is integral
893 (e.g. char, short, or unsigned equivalent), and is claimed to
894 be passed on an integer boundary, don't believe it! Offset the
895 parameter's address to the tail-end of that integer. */
897 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
898 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
899 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
901 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
902 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
906 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
908 /* If PCC says a parameter is a short or a char,
909 it is really an int. */
910 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
911 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
914 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
915 ? pcc_unsigned_promotion_type
916 : pcc_promotion_type
;
920 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
922 #endif /* !BELIEVE_PCC_PROMOTION. */
925 /* acc seems to use P to delare the prototypes of functions that
926 are referenced by this file. gdb is not prepared to deal
927 with this extra information. FIXME, it ought to. */
930 read_type (&p
, objfile
);
931 goto process_prototype_types
;
936 /* Parameter which is in a register. */
937 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
938 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
939 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
940 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
942 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
943 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
945 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
946 add_symbol_to_list (sym
, &local_symbols
);
950 /* Register variable (either global or local). */
951 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
952 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
953 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
954 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
956 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
957 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
959 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
962 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
963 name to represent an argument passed in a register.
964 GCC uses 'P' for the same case. So if we find such a symbol pair
965 we combine it into one 'P' symbol.
966 Note that this code illegally combines
967 main(argc) int argc; { register int argc = 1; }
968 but this case is considered pathological and causes a warning
969 from a decent compiler. */
971 && local_symbols
->nsyms
> 0)
973 struct symbol
*prev_sym
;
974 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
975 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
976 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
978 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
979 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
984 add_symbol_to_list (sym
, &local_symbols
);
987 add_symbol_to_list (sym
, &file_symbols
);
991 /* Static symbol at top level of file */
992 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
993 SYMBOL_CLASS (sym
) = LOC_STATIC
;
994 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
995 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
996 add_symbol_to_list (sym
, &file_symbols
);
1001 /* See comment where long_kludge_name is declared. */
1002 /* Here we save the name of the symbol for read_range_type, which
1003 ends up reading in the basic types. In stabs, unfortunately there
1004 is no distinction between "int" and "long" types except their
1005 names. Until we work out a saner type policy (eliminating most
1006 builtin types and using the names specified in the files), we
1007 save away the name so that far away from here in read_range_type,
1008 we can examine it to decide between "int" and "long". FIXME. */
1009 long_kludge_name
= SYMBOL_NAME (sym
);
1011 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1013 /* For a nameless type, we don't want a create a symbol, thus we
1014 did not use `sym'. Return without further processing. */
1015 if (nameless
) return NULL
;
1017 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1018 SYMBOL_VALUE (sym
) = valu
;
1019 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1020 /* C++ vagaries: we may have a type which is derived from
1021 a base type which did not have its name defined when the
1022 derived class was output. We fill in the derived class's
1023 base part member's name here in that case. */
1024 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1025 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1026 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1027 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1030 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1031 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1032 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1033 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1036 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1038 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
)
1040 /* If we are giving a name to a type such as "pointer
1041 to foo", we better not set the TYPE_NAME. If the
1042 program contains "typedef char *caddr_t;", we don't
1043 want all variables of type char * to print as
1044 caddr_t. This is not just a consequence of GDB's
1045 type management; PCC and GCC (at least through
1046 version 2.4) both output variables of either type
1047 char * or caddr_t with the type number defined in
1048 the 't' symbol for caddr_t. If a future compiler
1049 cleans this up it GDB is not ready for it yet, but
1050 if it becomes ready we somehow need to disable this
1051 check (without breaking the PCC/GCC2.4 case).
1055 Fortunately, this check seems not to be necessary
1056 for anything except pointers. */
1059 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1062 add_symbol_to_list (sym
, &file_symbols
);
1066 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1067 by 't' which means we are typedef'ing it as well. */
1068 synonym
= *p
== 't';
1073 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1074 strlen (SYMBOL_NAME (sym
)),
1075 &objfile
-> symbol_obstack
);
1078 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1080 /* For a nameless type, we don't want a create a symbol, thus we
1081 did not use `sym'. Return without further processing. */
1082 if (nameless
) return NULL
;
1084 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1085 SYMBOL_VALUE (sym
) = valu
;
1086 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1087 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1088 TYPE_NAME (SYMBOL_TYPE (sym
))
1089 = obconcat (&objfile
-> type_obstack
, "",
1090 (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_ENUM
1092 : (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1093 ? "struct " : "union ")),
1095 add_symbol_to_list (sym
, &file_symbols
);
1099 /* Clone the sym and then modify it. */
1100 register struct symbol
*typedef_sym
= (struct symbol
*)
1101 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1102 *typedef_sym
= *sym
;
1103 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1104 SYMBOL_VALUE (typedef_sym
) = valu
;
1105 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
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. */
1258 #if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */
1262 /* if such a type already exists, this is an unnecessary duplication
1263 of the stab string, which is common in (RS/6000) xlc generated
1264 objects. In that case, simply return NULL and let the caller take
1267 tt
= *dbx_lookup_type (typenums
);
1268 if (tt
&& tt
->length
&& tt
->code
)
1277 /* 'typenums=' not present, type is anonymous. Read and return
1278 the definition, but don't put it in the type vector. */
1279 typenums
[0] = typenums
[1] = -1;
1283 type_descriptor
= (*pp
)[-1];
1284 switch (type_descriptor
)
1288 enum type_code code
;
1290 /* Used to index through file_symbols. */
1291 struct pending
*ppt
;
1294 /* Name including "struct", etc. */
1297 /* Name without "struct", etc. */
1298 char *type_name_only
;
1304 /* Set the type code according to the following letter. */
1308 code
= TYPE_CODE_STRUCT
;
1312 code
= TYPE_CODE_UNION
;
1316 code
= TYPE_CODE_ENUM
;
1320 return error_type (pp
);
1323 to
= type_name
= (char *)
1324 obstack_alloc (&objfile
-> type_obstack
,
1326 ((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1328 /* Copy the prefix. */
1330 while ((*to
++ = *from
++) != '\0')
1334 type_name_only
= to
;
1336 /* Copy the name. */
1338 while ((*to
++ = *from
++) != ':')
1342 /* Set the pointer ahead of the name which we just read. */
1346 /* The following hack is clearly wrong, because it doesn't
1347 check whether we are in a baseclass. I tried to reproduce
1348 the case that it is trying to fix, but I couldn't get
1349 g++ to put out a cross reference to a basetype. Perhaps
1350 it doesn't do it anymore. */
1351 /* Note: for C++, the cross reference may be to a base type which
1352 has not yet been seen. In this case, we skip to the comma,
1353 which will mark the end of the base class name. (The ':'
1354 at the end of the base class name will be skipped as well.)
1355 But sometimes (ie. when the cross ref is the last thing on
1356 the line) there will be no ','. */
1357 from
= (char *) strchr (*pp
, ',');
1363 /* Now check to see whether the type has already been declared. */
1364 /* This is necessary at least in the case where the
1365 program says something like
1367 The compiler puts out a cross-reference; we better find
1368 set the length of the structure correctly so we can
1369 set the length of the array. */
1370 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1371 for (i
= 0; i
< ppt
->nsyms
; i
++)
1373 struct symbol
*sym
= ppt
->symbol
[i
];
1375 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1376 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1377 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1378 && STREQ (SYMBOL_NAME (sym
), type_name_only
))
1380 obstack_free (&objfile
-> type_obstack
, type_name
);
1381 type
= SYMBOL_TYPE (sym
);
1386 /* Didn't find the type to which this refers, so we must
1387 be dealing with a forward reference. Allocate a type
1388 structure for it, and keep track of it so we can
1389 fill in the rest of the fields when we get the full
1391 type
= dbx_alloc_type (typenums
, objfile
);
1392 TYPE_CODE (type
) = code
;
1393 TYPE_NAME (type
) = type_name
;
1394 INIT_CPLUS_SPECIFIC(type
);
1395 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1397 add_undefined_type (type
);
1401 case '-': /* RS/6000 built-in type */
1414 /* The type is being defined to another type. When we support
1415 Ada (and arguably for C, so "whatis foo" can give "size_t",
1416 "wchar_t", or whatever it was declared as) we'll need to
1417 allocate a distinct type here rather than returning the
1418 existing one. GCC is currently (deliberately) incapable of
1419 putting out the debugging information to do that, however. */
1422 if (read_type_number (pp
, xtypenums
) != 0)
1423 return error_type (pp
);
1424 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1425 /* It's being defined as itself. That means it is "void". */
1426 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1428 type
= *dbx_lookup_type (xtypenums
);
1429 if (typenums
[0] != -1)
1430 *dbx_lookup_type (typenums
) = type
;
1431 /* This can happen if we had '-' followed by a garbage character,
1434 return error_type (pp
);
1437 /* In the following types, we must be sure to overwrite any existing
1438 type that the typenums refer to, rather than allocating a new one
1439 and making the typenums point to the new one. This is because there
1440 may already be pointers to the existing type (if it had been
1441 forward-referenced), and we must change it to a pointer, function,
1442 reference, or whatever, *in-place*. */
1445 type1
= read_type (pp
, objfile
);
1446 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1449 case '&': /* Reference to another type */
1450 type1
= read_type (pp
, objfile
);
1451 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1454 case 'f': /* Function returning another type */
1455 type1
= read_type (pp
, objfile
);
1456 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1459 case 'k': /* Const qualifier on some type (Sun) */
1460 type
= read_type (pp
, objfile
);
1461 /* FIXME! For now, we ignore const and volatile qualifiers. */
1464 case 'B': /* Volatile qual on some type (Sun) */
1465 type
= read_type (pp
, objfile
);
1466 /* FIXME! For now, we ignore const and volatile qualifiers. */
1469 /* FIXME -- we should be doing smash_to_XXX types here. */
1470 case '@': /* Member (class & variable) type */
1472 struct type
*domain
= read_type (pp
, objfile
);
1473 struct type
*memtype
;
1476 /* Invalid member type data format. */
1477 return error_type (pp
);
1480 memtype
= read_type (pp
, objfile
);
1481 type
= dbx_alloc_type (typenums
, objfile
);
1482 smash_to_member_type (type
, domain
, memtype
);
1486 case '#': /* Method (class & fn) type */
1487 if ((*pp
)[0] == '#')
1489 /* We'll get the parameter types from the name. */
1490 struct type
*return_type
;
1493 return_type
= read_type (pp
, objfile
);
1494 if (*(*pp
)++ != ';')
1495 complain (&invalid_member_complaint
, symnum
);
1496 type
= allocate_stub_method (return_type
);
1497 if (typenums
[0] != -1)
1498 *dbx_lookup_type (typenums
) = type
;
1502 struct type
*domain
= read_type (pp
, objfile
);
1503 struct type
*return_type
;
1507 /* Invalid member type data format. */
1508 return error_type (pp
);
1512 return_type
= read_type (pp
, objfile
);
1513 args
= read_args (pp
, ';', objfile
);
1514 type
= dbx_alloc_type (typenums
, objfile
);
1515 smash_to_method_type (type
, domain
, return_type
, args
);
1519 case 'r': /* Range type */
1520 type
= read_range_type (pp
, typenums
, objfile
);
1521 if (typenums
[0] != -1)
1522 *dbx_lookup_type (typenums
) = type
;
1525 case 'b': /* Sun ACC builtin int type */
1526 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1527 if (typenums
[0] != -1)
1528 *dbx_lookup_type (typenums
) = type
;
1531 case 'R': /* Sun ACC builtin float type */
1532 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1533 if (typenums
[0] != -1)
1534 *dbx_lookup_type (typenums
) = type
;
1537 case 'e': /* Enumeration type */
1538 type
= dbx_alloc_type (typenums
, objfile
);
1539 type
= read_enum_type (pp
, type
, objfile
);
1540 if (typenums
[0] != -1)
1541 *dbx_lookup_type (typenums
) = type
;
1544 case 's': /* Struct type */
1545 case 'u': /* Union type */
1546 type
= dbx_alloc_type (typenums
, objfile
);
1547 if (!TYPE_NAME (type
))
1549 TYPE_NAME (type
) = type_synonym_name
;
1551 type_synonym_name
= NULL
;
1552 switch (type_descriptor
)
1555 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1558 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1561 type
= read_struct_type (pp
, type
, objfile
);
1564 case 'a': /* Array type */
1566 return error_type (pp
);
1569 type
= dbx_alloc_type (typenums
, objfile
);
1570 type
= read_array_type (pp
, type
, objfile
);
1574 --*pp
; /* Go back to the symbol in error */
1575 /* Particularly important if it was \0! */
1576 return error_type (pp
);
1581 warning ("GDB internal error, type is NULL in stabsread.c\n");
1582 return error_type (pp
);
1588 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1589 Return the proper type node for a given builtin type number. */
1591 static struct type
*
1592 rs6000_builtin_type (typenum
)
1595 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1596 #define NUMBER_RECOGNIZED 30
1597 /* This includes an empty slot for type number -0. */
1598 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1599 struct type
*rettype
;
1601 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1603 complain (&rs6000_builtin_complaint
, typenum
);
1604 return builtin_type_error
;
1606 if (negative_types
[-typenum
] != NULL
)
1607 return negative_types
[-typenum
];
1609 #if TARGET_CHAR_BIT != 8
1610 #error This code wrong for TARGET_CHAR_BIT not 8
1611 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1612 that if that ever becomes not true, the correct fix will be to
1613 make the size in the struct type to be in bits, not in units of
1620 /* The size of this and all the other types are fixed, defined
1621 by the debugging format. If there is a type called "int" which
1622 is other than 32 bits, then it should use a new negative type
1623 number (or avoid negative type numbers for that case).
1624 See stabs.texinfo. */
1625 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1628 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1631 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1634 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1637 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1638 "unsigned char", NULL
);
1641 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1644 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1645 "unsigned short", NULL
);
1648 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1649 "unsigned int", NULL
);
1652 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1655 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1656 "unsigned long", NULL
);
1659 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1662 /* IEEE single precision (32 bit). */
1663 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1666 /* IEEE double precision (64 bit). */
1667 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1670 /* This is an IEEE double on the RS/6000, and different machines with
1671 different sizes for "long double" should use different negative
1672 type numbers. See stabs.texinfo. */
1673 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1676 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1679 /* What is the proper size of this type? */
1680 rettype
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1683 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1686 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1689 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1692 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1696 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1700 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1704 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1708 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1712 /* Complex type consisting of two IEEE single precision values. */
1713 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1716 /* Complex type consisting of two IEEE double precision values. */
1717 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1720 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1723 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1726 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1729 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1732 negative_types
[-typenum
] = rettype
;
1736 /* This page contains subroutines of read_type. */
1738 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1739 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1740 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1742 /* Read member function stabs info for C++ classes. The form of each member
1745 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1747 An example with two member functions is:
1749 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1751 For the case of overloaded operators, the format is op$::*.funcs, where
1752 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1753 name (such as `+=') and `.' marks the end of the operator name.
1755 Returns 1 for success, 0 for failure. */
1758 read_member_functions (fip
, pp
, type
, objfile
)
1759 struct field_info
*fip
;
1762 struct objfile
*objfile
;
1766 /* Total number of member functions defined in this class. If the class
1767 defines two `f' functions, and one `g' function, then this will have
1769 int total_length
= 0;
1773 struct next_fnfield
*next
;
1774 struct fn_field fn_field
;
1776 struct type
*look_ahead_type
;
1777 struct next_fnfieldlist
*new_fnlist
;
1778 struct next_fnfield
*new_sublist
;
1782 /* Process each list until we find something that is not a member function
1783 or find the end of the functions. */
1787 /* We should be positioned at the start of the function name.
1788 Scan forward to find the first ':' and if it is not the
1789 first of a "::" delimiter, then this is not a member function. */
1801 look_ahead_type
= NULL
;
1804 new_fnlist
= (struct next_fnfieldlist
*)
1805 xmalloc (sizeof (struct next_fnfieldlist
));
1806 make_cleanup (free
, new_fnlist
);
1807 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1809 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1811 /* This is a completely wierd case. In order to stuff in the
1812 names that might contain colons (the usual name delimiter),
1813 Mike Tiemann defined a different name format which is
1814 signalled if the identifier is "op$". In that case, the
1815 format is "op$::XXXX." where XXXX is the name. This is
1816 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1817 /* This lets the user type "break operator+".
1818 We could just put in "+" as the name, but that wouldn't
1820 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1821 char *o
= opname
+ 3;
1823 /* Skip past '::'. */
1826 STABS_CONTINUE (pp
);
1832 main_fn_name
= savestring (opname
, o
- opname
);
1838 main_fn_name
= savestring (*pp
, p
- *pp
);
1839 /* Skip past '::'. */
1842 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1847 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1848 make_cleanup (free
, new_sublist
);
1849 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1851 /* Check for and handle cretinous dbx symbol name continuation! */
1852 if (look_ahead_type
== NULL
)
1855 STABS_CONTINUE (pp
);
1857 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1860 /* Invalid symtab info for member function. */
1866 /* g++ version 1 kludge */
1867 new_sublist
-> fn_field
.type
= look_ahead_type
;
1868 look_ahead_type
= NULL
;
1878 /* If this is just a stub, then we don't have the real name here. */
1880 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1882 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1883 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1884 new_sublist
-> fn_field
.is_stub
= 1;
1886 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1889 /* Set this member function's visibility fields. */
1892 case VISIBILITY_PRIVATE
:
1893 new_sublist
-> fn_field
.is_private
= 1;
1895 case VISIBILITY_PROTECTED
:
1896 new_sublist
-> fn_field
.is_protected
= 1;
1900 STABS_CONTINUE (pp
);
1903 case 'A': /* Normal functions. */
1904 new_sublist
-> fn_field
.is_const
= 0;
1905 new_sublist
-> fn_field
.is_volatile
= 0;
1908 case 'B': /* `const' member functions. */
1909 new_sublist
-> fn_field
.is_const
= 1;
1910 new_sublist
-> fn_field
.is_volatile
= 0;
1913 case 'C': /* `volatile' member function. */
1914 new_sublist
-> fn_field
.is_const
= 0;
1915 new_sublist
-> fn_field
.is_volatile
= 1;
1918 case 'D': /* `const volatile' member function. */
1919 new_sublist
-> fn_field
.is_const
= 1;
1920 new_sublist
-> fn_field
.is_volatile
= 1;
1923 case '*': /* File compiled with g++ version 1 -- no info */
1928 complain (&const_vol_complaint
, **pp
);
1937 /* virtual member function, followed by index.
1938 The sign bit is set to distinguish pointers-to-methods
1939 from virtual function indicies. Since the array is
1940 in words, the quantity must be shifted left by 1
1941 on 16 bit machine, and by 2 on 32 bit machine, forcing
1942 the sign bit out, and usable as a valid index into
1943 the array. Remove the sign bit here. */
1944 new_sublist
-> fn_field
.voffset
=
1945 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1949 STABS_CONTINUE (pp
);
1950 if (**pp
== ';' || **pp
== '\0')
1952 /* Must be g++ version 1. */
1953 new_sublist
-> fn_field
.fcontext
= 0;
1957 /* Figure out from whence this virtual function came.
1958 It may belong to virtual function table of
1959 one of its baseclasses. */
1960 look_ahead_type
= read_type (pp
, objfile
);
1963 /* g++ version 1 overloaded methods. */
1967 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1976 look_ahead_type
= NULL
;
1982 /* static member function. */
1983 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1984 if (strncmp (new_sublist
-> fn_field
.physname
,
1985 main_fn_name
, strlen (main_fn_name
)))
1987 new_sublist
-> fn_field
.is_stub
= 1;
1993 complain (&member_fn_complaint
, (*pp
)[-1]);
1994 /* Fall through into normal member function. */
1997 /* normal member function. */
1998 new_sublist
-> fn_field
.voffset
= 0;
1999 new_sublist
-> fn_field
.fcontext
= 0;
2003 new_sublist
-> next
= sublist
;
2004 sublist
= new_sublist
;
2006 STABS_CONTINUE (pp
);
2008 while (**pp
!= ';' && **pp
!= '\0');
2012 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2013 obstack_alloc (&objfile
-> type_obstack
,
2014 sizeof (struct fn_field
) * length
);
2015 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2016 sizeof (struct fn_field
) * length
);
2017 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2019 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2022 new_fnlist
-> fn_fieldlist
.length
= length
;
2023 new_fnlist
-> next
= fip
-> fnlist
;
2024 fip
-> fnlist
= new_fnlist
;
2026 total_length
+= length
;
2027 STABS_CONTINUE (pp
);
2032 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2033 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2034 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2035 memset (TYPE_FN_FIELDLISTS (type
), 0,
2036 sizeof (struct fn_fieldlist
) * nfn_fields
);
2037 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2038 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2044 /* Special GNU C++ name.
2046 Returns 1 for success, 0 for failure. "failure" means that we can't
2047 keep parsing and it's time for error_type(). */
2050 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2051 struct field_info
*fip
;
2054 struct objfile
*objfile
;
2060 struct type
*context
;
2070 /* At this point, *pp points to something like "22:23=*22...",
2071 where the type number before the ':' is the "context" and
2072 everything after is a regular type definition. Lookup the
2073 type, find it's name, and construct the field name. */
2075 context
= read_type (pp
, objfile
);
2079 case 'f': /* $vf -- a virtual function table pointer */
2080 fip
->list
->field
.name
=
2081 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2084 case 'b': /* $vb -- a virtual bsomethingorother */
2085 name
= type_name_no_tag (context
);
2088 complain (&invalid_cpp_type_complaint
, symnum
);
2091 fip
->list
->field
.name
=
2092 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2096 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2097 fip
->list
->field
.name
=
2098 obconcat (&objfile
->type_obstack
,
2099 "INVALID_CPLUSPLUS_ABBREV", "", "");
2103 /* At this point, *pp points to the ':'. Skip it and read the
2109 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2112 fip
->list
->field
.type
= read_type (pp
, objfile
);
2114 (*pp
)++; /* Skip the comma. */
2120 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2124 /* This field is unpacked. */
2125 fip
->list
->field
.bitsize
= 0;
2126 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2130 /* GNU C++ anonymous type. */
2131 complain (&stabs_general_complaint
, "g++ anonymous type $_ not handled");
2135 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2141 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2142 struct field_info
*fip
;
2146 struct objfile
*objfile
;
2148 fip
-> list
-> field
.name
=
2149 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2152 /* This means we have a visibility for a field coming. */
2156 fip
-> list
-> visibility
= *(*pp
)++;
2157 switch (fip
-> list
-> visibility
)
2159 case VISIBILITY_PRIVATE
:
2160 case VISIBILITY_PROTECTED
:
2163 case VISIBILITY_PUBLIC
:
2168 /* Unknown visibility specifier. */
2169 complain (&stabs_general_complaint
,
2170 "unknown visibility specifier");
2177 /* normal dbx-style format, no explicit visibility */
2178 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2181 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2186 /* Possible future hook for nested types. */
2189 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2195 /* Static class member. */
2196 fip
-> list
-> field
.bitpos
= (long) -1;
2202 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2206 else if (**pp
!= ',')
2208 /* Bad structure-type format. */
2209 complain (&stabs_general_complaint
, "bad structure-type format");
2213 (*pp
)++; /* Skip the comma. */
2217 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2220 complain (&stabs_general_complaint
, "bad structure-type format");
2223 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2226 complain (&stabs_general_complaint
, "bad structure-type format");
2231 /* FIXME-tiemann: Can't the compiler put out something which
2232 lets us distinguish these? (or maybe just not put out anything
2233 for the field). What is the story here? What does the compiler
2234 really do? Also, patch gdb.texinfo for this case; I document
2235 it as a possible problem there. Search for "DBX-style". */
2237 /* This is wrong because this is identical to the symbols
2238 produced for GCC 0-size arrays. For example:
2243 The code which dumped core in such circumstances should be
2244 fixed not to dump core. */
2246 /* g++ -g0 can put out bitpos & bitsize zero for a static
2247 field. This does not give us any way of getting its
2248 class, so we can't know its name. But we can just
2249 ignore the field so we don't dump core and other nasty
2251 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2253 complain (&dbx_class_complaint
);
2254 /* Ignore this field. */
2255 fip
-> list
= fip
-> list
-> next
;
2260 /* Detect an unpacked field and mark it as such.
2261 dbx gives a bit size for all fields.
2262 Note that forward refs cannot be packed,
2263 and treat enums as if they had the width of ints. */
2265 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2266 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2268 fip
-> list
-> field
.bitsize
= 0;
2270 if ((fip
-> list
-> field
.bitsize
2271 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2272 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2273 && (fip
-> list
-> field
.bitsize
2278 fip
-> list
-> field
.bitpos
% 8 == 0)
2280 fip
-> list
-> field
.bitsize
= 0;
2286 /* Read struct or class data fields. They have the form:
2288 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2290 At the end, we see a semicolon instead of a field.
2292 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2295 The optional VISIBILITY is one of:
2297 '/0' (VISIBILITY_PRIVATE)
2298 '/1' (VISIBILITY_PROTECTED)
2299 '/2' (VISIBILITY_PUBLIC)
2301 or nothing, for C style fields with public visibility.
2303 Returns 1 for success, 0 for failure. */
2306 read_struct_fields (fip
, pp
, type
, objfile
)
2307 struct field_info
*fip
;
2310 struct objfile
*objfile
;
2313 struct nextfield
*new;
2315 /* We better set p right now, in case there are no fields at all... */
2319 /* Read each data member type until we find the terminating ';' at the end of
2320 the data member list, or break for some other reason such as finding the
2321 start of the member function list. */
2325 STABS_CONTINUE (pp
);
2326 /* Get space to record the next field's data. */
2327 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2328 make_cleanup (free
, new);
2329 memset (new, 0, sizeof (struct nextfield
));
2330 new -> next
= fip
-> list
;
2333 /* Get the field name. */
2335 if (*p
== CPLUS_MARKER
)
2337 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2342 /* Look for the ':' that separates the field name from the field
2343 values. Data members are delimited by a single ':', while member
2344 functions are delimited by a pair of ':'s. When we hit the member
2345 functions (if any), terminate scan loop and return. */
2347 while (*p
!= ':' && *p
!= '\0')
2354 /* Check to see if we have hit the member functions yet. */
2359 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2363 /* chill the list of fields: the last entry (at the head) is a
2364 partially constructed entry which we now scrub. */
2365 fip
-> list
= fip
-> list
-> next
;
2370 /* The stabs for C++ derived classes contain baseclass information which
2371 is marked by a '!' character after the total size. This function is
2372 called when we encounter the baseclass marker, and slurps up all the
2373 baseclass information.
2375 Immediately following the '!' marker is the number of base classes that
2376 the class is derived from, followed by information for each base class.
2377 For each base class, there are two visibility specifiers, a bit offset
2378 to the base class information within the derived class, a reference to
2379 the type for the base class, and a terminating semicolon.
2381 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2383 Baseclass information marker __________________|| | | | | | |
2384 Number of baseclasses __________________________| | | | | | |
2385 Visibility specifiers (2) ________________________| | | | | |
2386 Offset in bits from start of class _________________| | | | |
2387 Type number for base class ___________________________| | | |
2388 Visibility specifiers (2) _______________________________| | |
2389 Offset in bits from start of class ________________________| |
2390 Type number of base class ____________________________________|
2392 Return 1 for success, 0 for (error-type-inducing) failure. */
2395 read_baseclasses (fip
, pp
, type
, objfile
)
2396 struct field_info
*fip
;
2399 struct objfile
*objfile
;
2402 struct nextfield
*new;
2410 /* Skip the '!' baseclass information marker. */
2414 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2417 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2423 /* Some stupid compilers have trouble with the following, so break
2424 it up into simpler expressions. */
2425 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2426 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2429 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2432 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2433 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2437 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2439 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2441 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2442 make_cleanup (free
, new);
2443 memset (new, 0, sizeof (struct nextfield
));
2444 new -> next
= fip
-> list
;
2446 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2448 STABS_CONTINUE (pp
);
2452 /* Nothing to do. */
2455 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2458 /* Bad visibility format. */
2462 new -> visibility
= *(*pp
)++;
2463 switch (new -> visibility
)
2465 case VISIBILITY_PRIVATE
:
2466 case VISIBILITY_PROTECTED
:
2467 case VISIBILITY_PUBLIC
:
2470 /* Bad visibility format. */
2477 /* The remaining value is the bit offset of the portion of the object
2478 corresponding to this baseclass. Always zero in the absence of
2479 multiple inheritance. */
2481 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2486 /* The last piece of baseclass information is the type of the
2487 base class. Read it, and remember it's type name as this
2490 new -> field
.type
= read_type (pp
, objfile
);
2491 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2493 /* skip trailing ';' and bump count of number of fields seen */
2502 /* The tail end of stabs for C++ classes that contain a virtual function
2503 pointer contains a tilde, a %, and a type number.
2504 The type number refers to the base class (possibly this class itself) which
2505 contains the vtable pointer for the current class.
2507 This function is called when we have parsed all the method declarations,
2508 so we can look for the vptr base class info. */
2511 read_tilde_fields (fip
, pp
, type
, objfile
)
2512 struct field_info
*fip
;
2515 struct objfile
*objfile
;
2519 STABS_CONTINUE (pp
);
2521 /* If we are positioned at a ';', then skip it. */
2531 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2533 /* Obsolete flags that used to indicate the presence
2534 of constructors and/or destructors. */
2538 /* Read either a '%' or the final ';'. */
2539 if (*(*pp
)++ == '%')
2541 /* The next number is the type number of the base class
2542 (possibly our own class) which supplies the vtable for
2543 this class. Parse it out, and search that class to find
2544 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2545 and TYPE_VPTR_FIELDNO. */
2550 t
= read_type (pp
, objfile
);
2552 while (*p
!= '\0' && *p
!= ';')
2558 /* Premature end of symbol. */
2562 TYPE_VPTR_BASETYPE (type
) = t
;
2563 if (type
== t
) /* Our own class provides vtbl ptr */
2565 for (i
= TYPE_NFIELDS (t
) - 1;
2566 i
>= TYPE_N_BASECLASSES (t
);
2569 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2570 sizeof (vptr_name
) - 1))
2572 TYPE_VPTR_FIELDNO (type
) = i
;
2576 /* Virtual function table field not found. */
2577 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2582 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2593 attach_fn_fields_to_type (fip
, type
)
2594 struct field_info
*fip
;
2595 register struct type
*type
;
2599 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2601 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2603 /* @@ Memory leak on objfile -> type_obstack? */
2606 TYPE_NFN_FIELDS_TOTAL (type
) +=
2607 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2610 for (n
= TYPE_NFN_FIELDS (type
);
2611 fip
-> fnlist
!= NULL
;
2612 fip
-> fnlist
= fip
-> fnlist
-> next
)
2614 --n
; /* Circumvent Sun3 compiler bug */
2615 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2620 /* Create the vector of fields, and record how big it is.
2621 We need this info to record proper virtual function table information
2622 for this class's virtual functions. */
2625 attach_fields_to_type (fip
, type
, objfile
)
2626 struct field_info
*fip
;
2627 register struct type
*type
;
2628 struct objfile
*objfile
;
2630 register int nfields
= 0;
2631 register int non_public_fields
= 0;
2632 register struct nextfield
*scan
;
2634 /* Count up the number of fields that we have, as well as taking note of
2635 whether or not there are any non-public fields, which requires us to
2636 allocate and build the private_field_bits and protected_field_bits
2639 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2642 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2644 non_public_fields
++;
2648 /* Now we know how many fields there are, and whether or not there are any
2649 non-public fields. Record the field count, allocate space for the
2650 array of fields, and create blank visibility bitfields if necessary. */
2652 TYPE_NFIELDS (type
) = nfields
;
2653 TYPE_FIELDS (type
) = (struct field
*)
2654 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2655 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2657 if (non_public_fields
)
2659 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2661 TYPE_FIELD_PRIVATE_BITS (type
) =
2662 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2663 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2665 TYPE_FIELD_PROTECTED_BITS (type
) =
2666 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2667 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2670 /* Copy the saved-up fields into the field vector. Start from the head
2671 of the list, adding to the tail of the field array, so that they end
2672 up in the same order in the array in which they were added to the list. */
2674 while (nfields
-- > 0)
2676 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2677 switch (fip
-> list
-> visibility
)
2679 case VISIBILITY_PRIVATE
:
2680 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2683 case VISIBILITY_PROTECTED
:
2684 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2687 case VISIBILITY_PUBLIC
:
2691 /* Should warn about this unknown visibility? */
2694 fip
-> list
= fip
-> list
-> next
;
2699 /* Read the description of a structure (or union type) and return an object
2700 describing the type.
2702 PP points to a character pointer that points to the next unconsumed token
2703 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2704 *PP will point to "4a:1,0,32;;".
2706 TYPE points to an incomplete type that needs to be filled in.
2708 OBJFILE points to the current objfile from which the stabs information is
2709 being read. (Note that it is redundant in that TYPE also contains a pointer
2710 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2713 static struct type
*
2714 read_struct_type (pp
, type
, objfile
)
2717 struct objfile
*objfile
;
2719 struct cleanup
*back_to
;
2720 struct field_info fi
;
2725 back_to
= make_cleanup (null_cleanup
, 0);
2727 INIT_CPLUS_SPECIFIC (type
);
2728 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2730 /* First comes the total size in bytes. */
2734 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2736 return error_type (pp
);
2739 /* Now read the baseclasses, if any, read the regular C struct or C++
2740 class member fields, attach the fields to the type, read the C++
2741 member functions, attach them to the type, and then read any tilde
2742 field (baseclass specifier for the class holding the main vtable). */
2744 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2745 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2746 || !attach_fields_to_type (&fi
, type
, objfile
)
2747 || !read_member_functions (&fi
, pp
, type
, objfile
)
2748 || !attach_fn_fields_to_type (&fi
, type
)
2749 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2751 do_cleanups (back_to
);
2752 return (error_type (pp
));
2755 do_cleanups (back_to
);
2759 /* Read a definition of an array type,
2760 and create and return a suitable type object.
2761 Also creates a range type which represents the bounds of that
2764 static struct type
*
2765 read_array_type (pp
, type
, objfile
)
2767 register struct type
*type
;
2768 struct objfile
*objfile
;
2770 struct type
*index_type
, *element_type
, *range_type
;
2775 /* Format of an array type:
2776 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2779 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2780 for these, produce a type like float[][]. */
2782 index_type
= read_type (pp
, objfile
);
2784 /* Improper format of array type decl. */
2785 return error_type (pp
);
2788 if (!(**pp
>= '0' && **pp
<= '9'))
2793 lower
= read_huge_number (pp
, ';', &nbits
);
2795 return error_type (pp
);
2797 if (!(**pp
>= '0' && **pp
<= '9'))
2802 upper
= read_huge_number (pp
, ';', &nbits
);
2804 return error_type (pp
);
2806 element_type
= read_type (pp
, objfile
);
2815 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2816 type
= create_array_type (type
, element_type
, range_type
);
2818 /* If we have an array whose element type is not yet known, but whose
2819 bounds *are* known, record it to be adjusted at the end of the file. */
2821 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2823 add_undefined_type (type
);
2830 /* Read a definition of an enumeration type,
2831 and create and return a suitable type object.
2832 Also defines the symbols that represent the values of the type. */
2834 static struct type
*
2835 read_enum_type (pp
, type
, objfile
)
2837 register struct type
*type
;
2838 struct objfile
*objfile
;
2843 register struct symbol
*sym
;
2845 struct pending
**symlist
;
2846 struct pending
*osyms
, *syms
;
2850 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2851 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2852 to do? For now, force all enum values to file scope. */
2853 if (within_function
)
2854 symlist
= &local_symbols
;
2857 symlist
= &file_symbols
;
2859 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2861 /* Read the value-names and their values.
2862 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2863 A semicolon or comma instead of a NAME means the end. */
2864 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2867 STABS_CONTINUE (pp
);
2869 while (*p
!= ':') p
++;
2870 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2872 n
= read_huge_number (pp
, ',', &nbits
);
2874 return error_type (pp
);
2876 sym
= (struct symbol
*)
2877 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2878 memset (sym
, 0, sizeof (struct symbol
));
2879 SYMBOL_NAME (sym
) = name
;
2880 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2881 SYMBOL_CLASS (sym
) = LOC_CONST
;
2882 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2883 SYMBOL_VALUE (sym
) = n
;
2884 add_symbol_to_list (sym
, symlist
);
2889 (*pp
)++; /* Skip the semicolon. */
2891 /* Now fill in the fields of the type-structure. */
2893 TYPE_LENGTH (type
) = sizeof (int);
2894 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2895 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2896 TYPE_NFIELDS (type
) = nsyms
;
2897 TYPE_FIELDS (type
) = (struct field
*)
2898 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2899 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2901 /* Find the symbols for the values and put them into the type.
2902 The symbols can be found in the symlist that we put them on
2903 to cause them to be defined. osyms contains the old value
2904 of that symlist; everything up to there was defined by us. */
2905 /* Note that we preserve the order of the enum constants, so
2906 that in something like "enum {FOO, LAST_THING=FOO}" we print
2907 FOO, not LAST_THING. */
2909 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2914 for (; j
< syms
->nsyms
; j
++,n
++)
2916 struct symbol
*xsym
= syms
->symbol
[j
];
2917 SYMBOL_TYPE (xsym
) = type
;
2918 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2919 TYPE_FIELD_VALUE (type
, n
) = 0;
2920 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2921 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2928 /* This screws up perfectly good C programs with enums. FIXME. */
2929 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2930 if(TYPE_NFIELDS(type
) == 2 &&
2931 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2932 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2933 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2934 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2935 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2941 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2942 typedefs in every file (for int, long, etc):
2944 type = b <signed> <width>; <offset>; <nbits>
2945 signed = u or s. Possible c in addition to u or s (for char?).
2946 offset = offset from high order bit to start bit of type.
2947 width is # bytes in object of this type, nbits is # bits in type.
2949 The width/offset stuff appears to be for small objects stored in
2950 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2953 static struct type
*
2954 read_sun_builtin_type (pp
, typenums
, objfile
)
2957 struct objfile
*objfile
;
2972 return error_type (pp
);
2976 /* For some odd reason, all forms of char put a c here. This is strange
2977 because no other type has this honor. We can safely ignore this because
2978 we actually determine 'char'acterness by the number of bits specified in
2984 /* The first number appears to be the number of bytes occupied
2985 by this type, except that unsigned short is 4 instead of 2.
2986 Since this information is redundant with the third number,
2987 we will ignore it. */
2988 read_huge_number (pp
, ';', &nbits
);
2990 return error_type (pp
);
2992 /* The second number is always 0, so ignore it too. */
2993 read_huge_number (pp
, ';', &nbits
);
2995 return error_type (pp
);
2997 /* The third number is the number of bits for this type. */
2998 type_bits
= read_huge_number (pp
, 0, &nbits
);
3000 return error_type (pp
);
3003 /* FIXME. Here we should just be able to make a type of the right
3004 number of bits and signedness. FIXME. */
3006 if (type_bits
== TARGET_LONG_LONG_BIT
)
3007 return (lookup_fundamental_type (objfile
,
3008 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
3010 if (type_bits
== TARGET_INT_BIT
)
3012 /* FIXME -- the only way to distinguish `int' from `long'
3013 is to look at its name! */
3016 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
3017 return lookup_fundamental_type (objfile
, FT_LONG
);
3019 return lookup_fundamental_type (objfile
, FT_INTEGER
);
3023 if (long_kludge_name
3024 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
3025 long_kludge_name
[9] == 'l' /* long */)
3026 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
3027 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
3029 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
3033 if (type_bits
== TARGET_SHORT_BIT
)
3034 return (lookup_fundamental_type (objfile
,
3035 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
3037 if (type_bits
== TARGET_CHAR_BIT
)
3038 return (lookup_fundamental_type (objfile
,
3039 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
3042 return lookup_fundamental_type (objfile
, FT_VOID
);
3044 return error_type (pp
);
3046 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3047 type_bits
/ TARGET_CHAR_BIT
,
3048 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3053 static struct type
*
3054 read_sun_floating_type (pp
, typenums
, objfile
)
3057 struct objfile
*objfile
;
3063 /* The first number has more details about the type, for example
3065 details
= read_huge_number (pp
, ';', &nbits
);
3067 return error_type (pp
);
3069 /* The second number is the number of bytes occupied by this type */
3070 nbytes
= read_huge_number (pp
, ';', &nbits
);
3072 return error_type (pp
);
3074 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3075 || details
== NF_COMPLEX32
)
3076 /* This is a type we can't handle, but we do know the size.
3077 We also will be able to give it a name. */
3078 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3080 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3083 /* Read a number from the string pointed to by *PP.
3084 The value of *PP is advanced over the number.
3085 If END is nonzero, the character that ends the
3086 number must match END, or an error happens;
3087 and that character is skipped if it does match.
3088 If END is zero, *PP is left pointing to that character.
3090 If the number fits in a long, set *BITS to 0 and return the value.
3091 If not, set *BITS to be the number of bits in the number and return 0.
3093 If encounter garbage, set *BITS to -1 and return 0. */
3096 read_huge_number (pp
, end
, bits
)
3116 /* Leading zero means octal. GCC uses this to output values larger
3117 than an int (because that would be hard in decimal). */
3124 upper_limit
= LONG_MAX
/ radix
;
3125 while ((c
= *p
++) >= '0' && c
<= ('0' + radix
))
3127 if (n
<= upper_limit
)
3130 n
+= c
- '0'; /* FIXME this overflows anyway */
3135 /* This depends on large values being output in octal, which is
3142 /* Ignore leading zeroes. */
3146 else if (c
== '2' || c
== '3')
3172 /* Large decimal constants are an error (because it is hard to
3173 count how many bits are in them). */
3179 /* -0x7f is the same as 0x80. So deal with it by adding one to
3180 the number of bits. */
3192 /* It's *BITS which has the interesting information. */
3196 static struct type
*
3197 read_range_type (pp
, typenums
, objfile
)
3200 struct objfile
*objfile
;
3206 struct type
*result_type
;
3207 struct type
*index_type
;
3209 /* First comes a type we are a subrange of.
3210 In C it is usually 0, 1 or the type being defined. */
3211 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3212 not just a type number. */
3213 if (read_type_number (pp
, rangenums
) != 0)
3214 return error_type (pp
);
3215 self_subrange
= (rangenums
[0] == typenums
[0] &&
3216 rangenums
[1] == typenums
[1]);
3218 /* A semicolon should now follow; skip it. */
3222 /* The remaining two operands are usually lower and upper bounds
3223 of the range. But in some special cases they mean something else. */
3224 n2
= read_huge_number (pp
, ';', &n2bits
);
3225 n3
= read_huge_number (pp
, ';', &n3bits
);
3227 if (n2bits
== -1 || n3bits
== -1)
3228 return error_type (pp
);
3230 /* If limits are huge, must be large integral type. */
3231 if (n2bits
!= 0 || n3bits
!= 0)
3233 char got_signed
= 0;
3234 char got_unsigned
= 0;
3235 /* Number of bits in the type. */
3238 /* Range from 0 to <large number> is an unsigned large integral type. */
3239 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3244 /* Range from <large number> to <large number>-1 is a large signed
3246 else if (n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3252 if (got_signed
|| got_unsigned
)
3254 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3255 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3259 return error_type (pp
);
3262 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3263 if (self_subrange
&& n2
== 0 && n3
== 0)
3264 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3266 /* If n3 is zero and n2 is not, we want a floating type,
3267 and n2 is the width in bytes.
3269 Fortran programs appear to use this for complex types also,
3270 and they give no way to distinguish between double and single-complex!
3272 GDB does not have complex types.
3274 Just return the complex as a float of that size. It won't work right
3275 for the complex values, but at least it makes the file loadable.
3277 FIXME, we may be able to distinguish these by their names. FIXME. */
3279 if (n3
== 0 && n2
> 0)
3281 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3284 /* If the upper bound is -1, it must really be an unsigned int. */
3286 else if (n2
== 0 && n3
== -1)
3288 /* It is unsigned int or unsigned long. */
3289 /* GCC sometimes uses this for long long too. We could
3290 distinguish it by the name, but we don't. */
3291 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3292 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3295 /* Special case: char is defined (Who knows why) as a subrange of
3296 itself with range 0-127. */
3297 else if (self_subrange
&& n2
== 0 && n3
== 127)
3298 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3300 /* We used to do this only for subrange of self or subrange of int. */
3304 /* n3 actually gives the size. */
3305 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3308 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3310 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3312 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3313 "unsigned long", and we already checked for that,
3314 so don't need to test for it here. */
3316 /* I think this is for Convex "long long". Since I don't know whether
3317 Convex sets self_subrange, I also accept that particular size regardless
3318 of self_subrange. */
3319 else if (n3
== 0 && n2
< 0
3321 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3322 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3323 else if (n2
== -n3
-1)
3326 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3328 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3329 if (n3
== 0x7fffffff)
3330 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3333 /* We have a real range type on our hands. Allocate space and
3334 return a real pointer. */
3336 /* At this point I don't have the faintest idea how to deal with
3337 a self_subrange type; I'm going to assume that this is used
3338 as an idiom, and that all of them are special cases. So . . . */
3340 return error_type (pp
);
3342 index_type
= *dbx_lookup_type (rangenums
);
3343 if (index_type
== NULL
)
3345 /* Does this actually ever happen? Is that why we are worrying
3346 about dealing with it rather than just calling error_type? */
3348 static struct type
*range_type_index
;
3350 complain (&range_type_base_complaint
, rangenums
[1]);
3351 if (range_type_index
== NULL
)
3353 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3354 0, "range type index type", NULL
);
3355 index_type
= range_type_index
;
3358 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3359 return (result_type
);
3362 /* Read in an argument list. This is a list of types, separated by commas
3363 and terminated with END. Return the list of types read in, or (struct type
3364 **)-1 if there is an error. */
3366 static struct type
**
3367 read_args (pp
, end
, objfile
)
3370 struct objfile
*objfile
;
3372 /* FIXME! Remove this arbitrary limit! */
3373 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3379 /* Invalid argument list: no ','. */
3380 return (struct type
**)-1;
3382 STABS_CONTINUE (pp
);
3383 types
[n
++] = read_type (pp
, objfile
);
3385 (*pp
)++; /* get past `end' (the ':' character) */
3389 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3391 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3393 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3394 memset (rval
+ n
, 0, sizeof (struct type
*));
3398 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3400 memcpy (rval
, types
, n
* sizeof (struct type
*));
3404 /* Add a common block's start address to the offset of each symbol
3405 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3406 the common block name). */
3409 fix_common_block (sym
, valu
)
3413 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3414 for ( ; next
; next
= next
->next
)
3417 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3418 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3424 /* What about types defined as forward references inside of a small lexical
3426 /* Add a type to the list of undefined types to be checked through
3427 once this file has been read in. */
3430 add_undefined_type (type
)
3433 if (undef_types_length
== undef_types_allocated
)
3435 undef_types_allocated
*= 2;
3436 undef_types
= (struct type
**)
3437 xrealloc ((char *) undef_types
,
3438 undef_types_allocated
* sizeof (struct type
*));
3440 undef_types
[undef_types_length
++] = type
;
3443 /* Go through each undefined type, see if it's still undefined, and fix it
3444 up if possible. We have two kinds of undefined types:
3446 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3447 Fix: update array length using the element bounds
3448 and the target type's length.
3449 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3450 yet defined at the time a pointer to it was made.
3451 Fix: Do a full lookup on the struct/union tag. */
3453 cleanup_undefined_types ()
3457 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3459 switch (TYPE_CODE (*type
))
3462 case TYPE_CODE_STRUCT
:
3463 case TYPE_CODE_UNION
:
3464 case TYPE_CODE_ENUM
:
3466 /* Check if it has been defined since. */
3467 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3469 struct pending
*ppt
;
3471 /* Name of the type, without "struct" or "union" */
3472 char *typename
= type_name_no_tag (*type
);
3474 if (typename
== NULL
)
3476 static struct complaint msg
= {"need a type name", 0, 0};
3480 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3482 for (i
= 0; i
< ppt
->nsyms
; i
++)
3484 struct symbol
*sym
= ppt
->symbol
[i
];
3486 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3487 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3488 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3490 && STREQ (SYMBOL_NAME (sym
), typename
))
3492 memcpy (*type
, SYMBOL_TYPE (sym
),
3493 sizeof (struct type
));
3501 case TYPE_CODE_ARRAY
:
3503 struct type
*range_type
;
3506 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3508 if (TYPE_NFIELDS (*type
) != 1)
3510 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3511 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3514 /* Now recompute the length of the array type, based on its
3515 number of elements and the target type's length. */
3516 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3517 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3518 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3519 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3526 static struct complaint msg
= {"\
3527 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3528 complain (&msg
, TYPE_CODE (*type
));
3533 undef_types_length
= 0;
3536 /* Scan through all of the global symbols defined in the object file,
3537 assigning values to the debugging symbols that need to be assigned
3538 to. Get these symbols from the minimal symbol table. */
3541 scan_file_globals (objfile
)
3542 struct objfile
*objfile
;
3545 struct minimal_symbol
*msymbol
;
3546 struct symbol
*sym
, *prev
;
3548 if (objfile
->msymbols
== 0) /* Beware the null file. */
3551 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3557 /* Get the hash index and check all the symbols
3558 under that hash index. */
3560 hash
= hashname (SYMBOL_NAME (msymbol
));
3562 for (sym
= global_sym_chain
[hash
]; sym
;)
3564 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3565 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3567 /* Splice this symbol out of the hash chain and
3568 assign the value we have to it. */
3571 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3575 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3578 /* Check to see whether we need to fix up a common block. */
3579 /* Note: this code might be executed several times for
3580 the same symbol if there are multiple references. */
3582 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3584 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3588 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3593 sym
= SYMBOL_VALUE_CHAIN (prev
);
3597 sym
= global_sym_chain
[hash
];
3603 sym
= SYMBOL_VALUE_CHAIN (sym
);
3609 /* Initialize anything that needs initializing when starting to read
3610 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3618 /* Initialize anything that needs initializing when a completely new
3619 symbol file is specified (not just adding some symbols from another
3620 file, e.g. a shared library). */
3623 stabsread_new_init ()
3625 /* Empty the hash table of global syms looking for values. */
3626 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3629 /* Initialize anything that needs initializing at the same time as
3630 start_symtab() is called. */
3634 global_stabs
= NULL
; /* AIX COFF */
3635 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3636 n_this_object_header_files
= 1;
3637 type_vector_length
= 0;
3638 type_vector
= (struct type
**) 0;
3641 /* Call after end_symtab() */
3647 free ((char *) type_vector
);
3650 type_vector_length
= 0;
3651 previous_stab_code
= 0;
3655 finish_global_stabs (objfile
)
3656 struct objfile
*objfile
;
3660 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3661 free ((PTR
) global_stabs
);
3662 global_stabs
= NULL
;
3666 /* Initializer for this module */
3669 _initialize_stabsread ()
3671 undef_types_allocated
= 20;
3672 undef_types_length
= 0;
3673 undef_types
= (struct type
**)
3674 xmalloc (undef_types_allocated
* sizeof (struct type
*));