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
*));
69 read_huge_number
PARAMS ((char **, int, long *, int *));
72 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
76 fix_common_block
PARAMS ((struct symbol
*, int));
79 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
82 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
85 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
88 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
91 rs6000_builtin_type
PARAMS ((int));
94 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
98 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
102 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
106 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
110 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
113 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
117 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
120 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
122 static struct type
**
123 read_args
PARAMS ((char **, int, struct objfile
*));
126 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
129 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
130 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
132 /* Define this as 1 if a pcc declaration of a char or short argument
133 gives the correct address. Otherwise assume pcc gives the
134 address of the corresponding int, which is not the same on a
135 big-endian machine. */
137 #ifndef BELIEVE_PCC_PROMOTION
138 #define BELIEVE_PCC_PROMOTION 0
141 /* During some calls to read_type (and thus to read_range_type), this
142 contains the name of the type being defined. Range types are only
143 used in C as basic types. We use the name to distinguish the otherwise
144 identical basic types "int" and "long" and their unsigned versions.
145 FIXME, this should disappear with better type management. */
147 static char *long_kludge_name
;
150 struct complaint dbx_class_complaint
=
152 "encountered DBX-style class variable debugging information.\n\
153 You seem to have compiled your program with \
154 \"g++ -g0\" instead of \"g++ -g\".\n\
155 Therefore GDB will not know about your class variables", 0, 0
159 struct complaint invalid_cpp_abbrev_complaint
=
160 {"invalid C++ abbreviation `%s'", 0, 0};
162 struct complaint invalid_cpp_type_complaint
=
163 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
165 struct complaint member_fn_complaint
=
166 {"member function type missing, got '%c'", 0, 0};
168 struct complaint const_vol_complaint
=
169 {"const/volatile indicator missing, got '%c'", 0, 0};
171 struct complaint error_type_complaint
=
172 {"debug info mismatch between compiler and debugger", 0, 0};
174 struct complaint invalid_member_complaint
=
175 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
177 struct complaint range_type_base_complaint
=
178 {"base type %d of range type is not defined", 0, 0};
180 struct complaint reg_value_complaint
=
181 {"register number too large in symbol %s", 0, 0};
183 struct complaint vtbl_notfound_complaint
=
184 {"virtual function table pointer not found when defining class `%s'", 0, 0};
186 struct complaint unrecognized_cplus_name_complaint
=
187 {"Unknown C++ symbol name `%s'", 0, 0};
189 struct complaint rs6000_builtin_complaint
=
190 {"Unknown builtin type %d", 0, 0};
192 struct complaint stabs_general_complaint
=
195 /* Make a list of forward references which haven't been defined. */
197 static struct type
**undef_types
;
198 static int undef_types_allocated
;
199 static int undef_types_length
;
201 /* Check for and handle cretinous stabs symbol name continuation! */
202 #define STABS_CONTINUE(pp) \
204 if (**(pp) == '\\') *(pp) = next_symbol_text (); \
212 register char *p
= name
;
213 register int total
= p
[0];
228 /* Ensure result is positive. */
231 total
+= (1000 << 6);
233 return (total
% HASHSIZE
);
237 /* Look up a dbx type-number pair. Return the address of the slot
238 where the type for that number-pair is stored.
239 The number-pair is in TYPENUMS.
241 This can be used for finding the type associated with that pair
242 or for associating a new type with the pair. */
245 dbx_lookup_type (typenums
)
248 register int filenum
= typenums
[0];
249 register int index
= typenums
[1];
251 register int real_filenum
;
252 register struct header_file
*f
;
255 if (filenum
== -1) /* -1,-1 is for temporary types. */
258 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
259 error ("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
260 filenum
, index
, symnum
);
266 /* Caller wants address of address of type. We think
267 that negative (rs6k builtin) types will never appear as
268 "lvalues", (nor should they), so we stuff the real type
269 pointer into a temp, and return its address. If referenced,
270 this will do the right thing. */
271 static struct type
*temp_type
;
273 temp_type
= rs6000_builtin_type(index
);
277 /* Type is defined outside of header files.
278 Find it in this object file's type vector. */
279 if (index
>= type_vector_length
)
281 old_len
= type_vector_length
;
284 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
285 type_vector
= (struct type
**)
286 malloc (type_vector_length
* sizeof (struct type
*));
288 while (index
>= type_vector_length
)
290 type_vector_length
*= 2;
292 type_vector
= (struct type
**)
293 xrealloc ((char *) type_vector
,
294 (type_vector_length
* sizeof (struct type
*)));
295 memset (&type_vector
[old_len
], 0,
296 (type_vector_length
- old_len
) * sizeof (struct type
*));
298 return (&type_vector
[index
]);
302 real_filenum
= this_object_header_files
[filenum
];
304 if (real_filenum
>= n_header_files
)
309 f
= &header_files
[real_filenum
];
311 f_orig_length
= f
->length
;
312 if (index
>= f_orig_length
)
314 while (index
>= f
->length
)
318 f
->vector
= (struct type
**)
319 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
320 memset (&f
->vector
[f_orig_length
], 0,
321 (f
->length
- f_orig_length
) * sizeof (struct type
*));
323 return (&f
->vector
[index
]);
327 /* Make sure there is a type allocated for type numbers TYPENUMS
328 and return the type object.
329 This can create an empty (zeroed) type object.
330 TYPENUMS may be (-1, -1) to return a new type object that is not
331 put into the type vector, and so may not be referred to by number. */
334 dbx_alloc_type (typenums
, objfile
)
336 struct objfile
*objfile
;
338 register struct type
**type_addr
;
340 if (typenums
[0] == -1)
342 return (alloc_type (objfile
));
345 type_addr
= dbx_lookup_type (typenums
);
347 /* If we are referring to a type not known at all yet,
348 allocate an empty type for it.
349 We will fill it in later if we find out how. */
352 *type_addr
= alloc_type (objfile
);
358 /* for all the stabs in a given stab vector, build appropriate types
359 and fix their symbols in given symbol vector. */
362 patch_block_stabs (symbols
, stabs
, objfile
)
363 struct pending
*symbols
;
364 struct pending_stabs
*stabs
;
365 struct objfile
*objfile
;
375 /* for all the stab entries, find their corresponding symbols and
376 patch their types! */
378 for (ii
= 0; ii
< stabs
->count
; ++ii
)
380 name
= stabs
->stab
[ii
];
381 pp
= (char*) strchr (name
, ':');
382 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
385 /* On xcoff, if a global is defined and never referenced,
386 ld will remove it from the executable. There is then
387 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
388 sym
= (struct symbol
*)
389 obstack_alloc (&objfile
->symbol_obstack
,
390 sizeof (struct symbol
));
392 memset (sym
, 0, sizeof (struct symbol
));
393 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
394 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
396 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
398 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
400 /* I don't think the linker does this with functions,
401 so as far as I know this is never executed.
402 But it doesn't hurt to check. */
404 lookup_function_type (read_type (&pp
, objfile
));
408 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
410 add_symbol_to_list (sym
, &global_symbols
);
415 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
418 lookup_function_type (read_type (&pp
, objfile
));
422 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
430 /* Read a number by which a type is referred to in dbx data,
431 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
432 Just a single number N is equivalent to (0,N).
433 Return the two numbers by storing them in the vector TYPENUMS.
434 TYPENUMS will then be used as an argument to dbx_lookup_type. */
437 read_type_number (pp
, typenums
)
439 register int *typenums
;
444 typenums
[0] = read_number (pp
, ',');
445 typenums
[1] = read_number (pp
, ')');
450 typenums
[1] = read_number (pp
, 0);
455 /* To handle GNU C++ typename abbreviation, we need to be able to
456 fill in a type's name as soon as space for that type is allocated.
457 `type_synonym_name' is the name of the type being allocated.
458 It is cleared as soon as it is used (lest all allocated types
461 static char *type_synonym_name
;
465 define_symbol (valu
, string
, desc
, type
, objfile
)
470 struct objfile
*objfile
;
472 register struct symbol
*sym
;
473 char *p
= (char *) strchr (string
, ':');
477 struct type
*temptype
;
479 /* We would like to eliminate nameless symbols, but keep their types.
480 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
481 to type 2, but, should not create a symbol to address that type. Since
482 the symbol will be nameless, there is no way any user can refer to it. */
486 /* Ignore syms with empty names. */
490 /* Ignore old-style symbols from cc -go */
494 /* If a nameless stab entry, all we need is the type, not the symbol.
495 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
496 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
498 sym
= (struct symbol
*)
499 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
500 memset (sym
, 0, sizeof (struct symbol
));
502 if (processing_gcc_compilation
)
504 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
505 number of bytes occupied by a type or object, which we ignore. */
506 SYMBOL_LINE(sym
) = desc
;
510 SYMBOL_LINE(sym
) = 0; /* unknown */
513 if (string
[0] == CPLUS_MARKER
)
515 /* Special GNU C++ names. */
519 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
520 &objfile
-> symbol_obstack
);
523 case 'v': /* $vtbl_ptr_type */
524 /* Was: SYMBOL_NAME (sym) = "vptr"; */
528 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
529 &objfile
-> symbol_obstack
);
533 /* This was an anonymous type that was never fixed up. */
537 complain (&unrecognized_cplus_name_complaint
, string
);
538 goto normal
; /* Do *something* with it */
544 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
545 SYMBOL_NAME (sym
) = (char *)
546 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
547 /* Open-coded bcopy--saves function call time. */
548 /* FIXME: Does it really? Try replacing with simple strcpy and
549 try it on an executable with a large symbol table. */
551 register char *p1
= string
;
552 register char *p2
= SYMBOL_NAME (sym
);
560 /* If this symbol is from a C++ compilation, then attempt to cache the
561 demangled form for future reference. This is a typical time versus
562 space tradeoff, that was decided in favor of time because it sped up
563 C++ symbol lookups by a factor of about 20. */
565 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
569 /* Determine the type of name being defined. */
570 /* The Acorn RISC machine's compiler can put out locals that don't
571 start with "234=" or "(3,4)=", so assume anything other than the
572 deftypes we know how to handle is a local. */
573 if (!strchr ("cfFGpPrStTvVXCR", *p
))
578 /* c is a special case, not followed by a type-number.
579 SYMBOL:c=iVALUE for an integer constant symbol.
580 SYMBOL:c=rVALUE for a floating constant symbol.
581 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
582 e.g. "b:c=e6,0" for "const b = blob1"
583 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
587 error ("Invalid symbol data at symtab pos %d.", symnum
);
595 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
598 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (double));
599 memcpy (dbl_valu
, &d
, sizeof (double));
600 /* Put it in target byte order, but it's still in host
601 floating point format. */
602 SWAP_TARGET_AND_HOST (dbl_valu
, sizeof (double));
603 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
604 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
609 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
611 SYMBOL_VALUE (sym
) = atoi (p
);
612 SYMBOL_CLASS (sym
) = LOC_CONST
;
616 /* SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
617 e.g. "b:c=e6,0" for "const b = blob1"
618 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
622 read_type_number (&p
, typenums
);
624 error ("Invalid symbol data: no comma in enum const symbol");
626 SYMBOL_TYPE (sym
) = *dbx_lookup_type (typenums
);
627 SYMBOL_VALUE (sym
) = atoi (p
);
628 SYMBOL_CLASS (sym
) = LOC_CONST
;
633 static struct complaint msg
=
634 {"Unrecognized constant type", 0, 0};
636 SYMBOL_CLASS (sym
) = LOC_CONST
;
637 /* This gives a second complaint, which is probably OK.
638 We do want the skip to the end of symbol behavior (to
639 deal with continuation). */
640 SYMBOL_TYPE (sym
) = error_type (&p
);
643 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
644 add_symbol_to_list (sym
, &file_symbols
);
648 /* Now usually comes a number that says which data type,
649 and possibly more stuff to define the type
650 (all of which is handled by read_type) */
652 if (deftype
== 'p' && *p
== 'F')
653 /* pF is a two-letter code that means a function parameter in Fortran.
654 The type-number specifies the type of the return value.
655 Translate it into a pointer-to-function type. */
659 = lookup_pointer_type (lookup_function_type (read_type (&p
, objfile
)));
663 /* The symbol class letter is followed by a type (typically the
664 type of the symbol, or its return-type, or etc). Read it. */
671 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
672 strlen (SYMBOL_NAME (sym
)),
673 &objfile
-> symbol_obstack
);
676 /* Here we save the name of the symbol for read_range_type, which
677 ends up reading in the basic types. In stabs, unfortunately there
678 is no distinction between "int" and "long" types except their
679 names. Until we work out a saner type policy (eliminating most
680 builtin types and using the names specified in the files), we
681 save away the name so that far away from here in read_range_type,
682 we can examine it to decide between "int" and "long". FIXME. */
683 long_kludge_name
= SYMBOL_NAME (sym
);
685 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
691 /* The name of a caught exception. */
692 SYMBOL_CLASS (sym
) = LOC_LABEL
;
693 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
694 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
695 add_symbol_to_list (sym
, &local_symbols
);
699 /* A static function definition. */
700 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
701 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
702 add_symbol_to_list (sym
, &file_symbols
);
703 /* fall into process_function_types. */
705 process_function_types
:
706 /* Function result types are described as the result type in stabs.
707 We need to convert this to the function-returning-type-X type
708 in GDB. E.g. "int" is converted to "function returning int". */
709 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
712 /* This code doesn't work -- it needs to realloc and can't. */
713 /* Attempt to set up to record a function prototype... */
714 struct type
*new = alloc_type (objfile
);
716 /* Generate a template for the type of this function. The
717 types of the arguments will be added as we read the symbol
719 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
720 SYMBOL_TYPE(sym
) = new;
721 TYPE_OBJFILE (new) = objfile
;
722 in_function_type
= new;
724 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
727 /* fall into process_prototype_types */
729 process_prototype_types
:
730 /* Sun acc puts declared types of arguments here. We don't care
731 about their actual types (FIXME -- we should remember the whole
732 function prototype), but the list may define some new types
733 that we have to remember, so we must scan it now. */
736 read_type (&p
, objfile
);
741 /* A global function definition. */
742 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
743 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
744 add_symbol_to_list (sym
, &global_symbols
);
745 goto process_function_types
;
748 /* For a class G (global) symbol, it appears that the
749 value is not correct. It is necessary to search for the
750 corresponding linker definition to find the value.
751 These definitions appear at the end of the namelist. */
752 i
= hashname (SYMBOL_NAME (sym
));
753 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
754 global_sym_chain
[i
] = sym
;
755 SYMBOL_CLASS (sym
) = LOC_STATIC
;
756 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
757 add_symbol_to_list (sym
, &global_symbols
);
760 /* This case is faked by a conditional above,
761 when there is no code letter in the dbx data.
762 Dbx data never actually contains 'l'. */
764 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
765 SYMBOL_VALUE (sym
) = valu
;
766 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
767 add_symbol_to_list (sym
, &local_symbols
);
771 /* Normally this is a parameter, a LOC_ARG. On the i960, it
772 can also be a LOC_LOCAL_ARG depending on symbol type. */
773 #ifndef DBX_PARM_SYMBOL_CLASS
774 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
776 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
777 SYMBOL_VALUE (sym
) = valu
;
778 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
780 /* This doesn't work yet. */
781 add_param_to_type (&in_function_type
, sym
);
783 add_symbol_to_list (sym
, &local_symbols
);
785 /* If it's gcc-compiled, if it says `short', believe it. */
786 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
789 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
790 /* This macro is defined on machines (e.g. sparc) where
791 we should believe the type of a PCC 'short' argument,
792 but shouldn't believe the address (the address is
793 the address of the corresponding int). Note that
794 this is only different from the BELIEVE_PCC_PROMOTION
795 case on big-endian machines.
797 My guess is that this correction, as opposed to changing
798 the parameter to an 'int' (as done below, for PCC
799 on most machines), is the right thing to do
800 on all machines, but I don't want to risk breaking
801 something that already works. On most PCC machines,
802 the sparc problem doesn't come up because the calling
803 function has to zero the top bytes (not knowing whether
804 the called function wants an int or a short), so there
805 is no practical difference between an int and a short
806 (except perhaps what happens when the GDB user types
807 "print short_arg = 0x10000;").
809 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
810 actually produces the correct address (we don't need to fix it
811 up). I made this code adapt so that it will offset the symbol
812 if it was pointing at an int-aligned location and not
813 otherwise. This way you can use the same gdb for 4.0.x and
816 If the parameter is shorter than an int, and is integral
817 (e.g. char, short, or unsigned equivalent), and is claimed to
818 be passed on an integer boundary, don't believe it! Offset the
819 parameter's address to the tail-end of that integer. */
821 temptype
= lookup_fundamental_type (objfile
, FT_INTEGER
);
822 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (temptype
)
823 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
824 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (temptype
))
826 SYMBOL_VALUE (sym
) += TYPE_LENGTH (temptype
)
827 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
831 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
833 /* If PCC says a parameter is a short or a char,
834 it is really an int. */
835 temptype
= lookup_fundamental_type (objfile
, FT_INTEGER
);
836 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (temptype
)
837 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
839 SYMBOL_TYPE (sym
) = TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
840 ? lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
)
845 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
849 /* acc seems to use P to delare the prototypes of functions that
850 are referenced by this file. gdb is not prepared to deal
851 with this extra information. FIXME, it ought to. */
853 goto process_prototype_types
;
855 /* Parameter which is in a register. */
856 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
857 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
858 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
860 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
861 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
863 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
864 add_symbol_to_list (sym
, &local_symbols
);
868 /* Register variable (either global or local). */
869 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
870 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
871 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
873 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
874 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
876 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
879 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
880 name to represent an argument passed in a register.
881 GCC uses 'P' for the same case. So if we find such a symbol pair
882 we combine it into one 'P' symbol.
883 Note that this code illegally combines
884 main(argc) int argc; { register int argc = 1; }
885 but this case is considered pathological and causes a warning
886 from a decent compiler. */
888 && local_symbols
->nsyms
> 0)
890 struct symbol
*prev_sym
;
891 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
892 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
893 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
895 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
896 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
901 add_symbol_to_list (sym
, &local_symbols
);
904 add_symbol_to_list (sym
, &file_symbols
);
908 /* Static symbol at top level of file */
909 SYMBOL_CLASS (sym
) = LOC_STATIC
;
910 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
911 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
912 add_symbol_to_list (sym
, &file_symbols
);
916 /* For a nameless type, we don't want a create a symbol, thus we
917 did not use `sym'. Return without further processing. */
918 if (nameless
) return NULL
;
920 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
921 SYMBOL_VALUE (sym
) = valu
;
922 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
923 /* C++ vagaries: we may have a type which is derived from
924 a base type which did not have its name defined when the
925 derived class was output. We fill in the derived class's
926 base part member's name here in that case. */
927 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
928 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
929 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
930 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
933 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
934 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
935 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
936 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
939 add_symbol_to_list (sym
, &file_symbols
);
943 /* For a nameless type, we don't want a create a symbol, thus we
944 did not use `sym'. Return without further processing. */
945 if (nameless
) return NULL
;
947 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
948 SYMBOL_VALUE (sym
) = valu
;
949 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
950 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
951 TYPE_NAME (SYMBOL_TYPE (sym
))
952 = obconcat (&objfile
-> type_obstack
, "",
953 (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_ENUM
955 : (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
956 ? "struct " : "union ")),
958 add_symbol_to_list (sym
, &file_symbols
);
962 /* Clone the sym and then modify it. */
963 register struct symbol
*typedef_sym
= (struct symbol
*)
964 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
966 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
967 SYMBOL_VALUE (typedef_sym
) = valu
;
968 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
969 add_symbol_to_list (typedef_sym
, &file_symbols
);
974 /* Static symbol of local scope */
975 SYMBOL_CLASS (sym
) = LOC_STATIC
;
976 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
977 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
978 add_symbol_to_list (sym
, &local_symbols
);
982 /* Reference parameter */
983 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
984 SYMBOL_VALUE (sym
) = valu
;
985 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
986 add_symbol_to_list (sym
, &local_symbols
);
990 /* This is used by Sun FORTRAN for "function result value".
991 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
992 that Pascal uses it too, but when I tried it Pascal used
993 "x:3" (local symbol) instead. */
994 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
995 SYMBOL_VALUE (sym
) = valu
;
996 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
997 add_symbol_to_list (sym
, &local_symbols
);
1001 error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype
, symnum
);
1004 /* When passing structures to a function, some systems sometimes pass
1005 the address in a register, not the structure itself.
1007 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1008 to LOC_REGPARM_ADDR for structures and unions. */
1010 #if !defined (REG_STRUCT_HAS_ADDR)
1011 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
1014 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1015 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1016 && ( (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1017 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1018 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1024 /* Skip rest of this symbol and return an error type.
1026 General notes on error recovery: error_type always skips to the
1027 end of the symbol (modulo cretinous dbx symbol name continuation).
1028 Thus code like this:
1030 if (*(*pp)++ != ';')
1031 return error_type (pp);
1033 is wrong because if *pp starts out pointing at '\0' (typically as the
1034 result of an earlier error), it will be incremented to point to the
1035 start of the next symbol, which might produce strange results, at least
1036 if you run off the end of the string table. Instead use
1039 return error_type (pp);
1045 foo = error_type (pp);
1049 And in case it isn't obvious, the point of all this hair is so the compiler
1050 can define new types and new syntaxes, and old versions of the
1051 debugger will be able to read the new symbol tables. */
1057 complain (&error_type_complaint
);
1060 /* Skip to end of symbol. */
1061 while (**pp
!= '\0')
1066 /* Check for and handle cretinous dbx symbol name continuation! */
1067 if ((*pp
)[-1] == '\\')
1069 *pp
= next_symbol_text ();
1076 return (builtin_type_error
);
1080 /* Read a dbx type reference or definition;
1081 return the type that is meant.
1082 This can be just a number, in which case it references
1083 a type already defined and placed in type_vector.
1084 Or the number can be followed by an =, in which case
1085 it means to define a new type according to the text that
1089 read_type (pp
, objfile
)
1091 struct objfile
*objfile
;
1093 register struct type
*type
= 0;
1097 char type_descriptor
;
1099 /* Read type number if present. The type number may be omitted.
1100 for instance in a two-dimensional array declared with type
1101 "ar1;1;10;ar1;1;10;4". */
1102 if ((**pp
>= '0' && **pp
<= '9')
1105 read_type_number (pp
, typenums
);
1107 /* Type is not being defined here. Either it already exists,
1108 or this is a forward reference to it. dbx_alloc_type handles
1111 return dbx_alloc_type (typenums
, objfile
);
1113 /* Type is being defined here. */
1114 #if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */
1118 /* if such a type already exists, this is an unnecessary duplication
1119 of the stab string, which is common in (RS/6000) xlc generated
1120 objects. In that case, simply return NULL and let the caller take
1123 tt
= *dbx_lookup_type (typenums
);
1124 if (tt
&& tt
->length
&& tt
->code
)
1133 /* 'typenums=' not present, type is anonymous. Read and return
1134 the definition, but don't put it in the type vector. */
1135 typenums
[0] = typenums
[1] = -1;
1139 type_descriptor
= (*pp
)[-1];
1140 switch (type_descriptor
)
1144 enum type_code code
;
1146 /* Used to index through file_symbols. */
1147 struct pending
*ppt
;
1150 /* Name including "struct", etc. */
1153 /* Name without "struct", etc. */
1154 char *type_name_only
;
1160 /* Set the type code according to the following letter. */
1164 code
= TYPE_CODE_STRUCT
;
1168 code
= TYPE_CODE_UNION
;
1172 code
= TYPE_CODE_ENUM
;
1176 return error_type (pp
);
1179 to
= type_name
= (char *)
1180 obstack_alloc (&objfile
-> type_obstack
,
1182 ((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1184 /* Copy the prefix. */
1186 while ((*to
++ = *from
++) != '\0')
1190 type_name_only
= to
;
1192 /* Copy the name. */
1194 while ((*to
++ = *from
++) != ':')
1198 /* Set the pointer ahead of the name which we just read. */
1202 /* The following hack is clearly wrong, because it doesn't
1203 check whether we are in a baseclass. I tried to reproduce
1204 the case that it is trying to fix, but I couldn't get
1205 g++ to put out a cross reference to a basetype. Perhaps
1206 it doesn't do it anymore. */
1207 /* Note: for C++, the cross reference may be to a base type which
1208 has not yet been seen. In this case, we skip to the comma,
1209 which will mark the end of the base class name. (The ':'
1210 at the end of the base class name will be skipped as well.)
1211 But sometimes (ie. when the cross ref is the last thing on
1212 the line) there will be no ','. */
1213 from
= (char *) strchr (*pp
, ',');
1219 /* Now check to see whether the type has already been declared. */
1220 /* This is necessary at least in the case where the
1221 program says something like
1223 The compiler puts out a cross-reference; we better find
1224 set the length of the structure correctly so we can
1225 set the length of the array. */
1226 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1227 for (i
= 0; i
< ppt
->nsyms
; i
++)
1229 struct symbol
*sym
= ppt
->symbol
[i
];
1231 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1232 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1233 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1234 && STREQ (SYMBOL_NAME (sym
), type_name_only
))
1236 obstack_free (&objfile
-> type_obstack
, type_name
);
1237 type
= SYMBOL_TYPE (sym
);
1242 /* Didn't find the type to which this refers, so we must
1243 be dealing with a forward reference. Allocate a type
1244 structure for it, and keep track of it so we can
1245 fill in the rest of the fields when we get the full
1247 type
= dbx_alloc_type (typenums
, objfile
);
1248 TYPE_CODE (type
) = code
;
1249 TYPE_NAME (type
) = type_name
;
1250 INIT_CPLUS_SPECIFIC(type
);
1251 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1253 add_undefined_type (type
);
1257 case '-': /* RS/6000 built-in type */
1270 read_type_number (pp
, xtypenums
);
1271 type
= *dbx_lookup_type (xtypenums
);
1273 type
= lookup_fundamental_type (objfile
, FT_VOID
);
1274 if (typenums
[0] != -1)
1275 *dbx_lookup_type (typenums
) = type
;
1278 /* In the following types, we must be sure to overwrite any existing
1279 type that the typenums refer to, rather than allocating a new one
1280 and making the typenums point to the new one. This is because there
1281 may already be pointers to the existing type (if it had been
1282 forward-referenced), and we must change it to a pointer, function,
1283 reference, or whatever, *in-place*. */
1286 type1
= read_type (pp
, objfile
);
1287 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1290 case '&': /* Reference to another type */
1291 type1
= read_type (pp
, objfile
);
1292 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1295 case 'f': /* Function returning another type */
1296 type1
= read_type (pp
, objfile
);
1297 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1300 case 'k': /* Const qualifier on some type (Sun) */
1301 type
= read_type (pp
, objfile
);
1302 /* FIXME! For now, we ignore const and volatile qualifiers. */
1305 case 'B': /* Volatile qual on some type (Sun) */
1306 type
= read_type (pp
, objfile
);
1307 /* FIXME! For now, we ignore const and volatile qualifiers. */
1310 /* FIXME -- we should be doing smash_to_XXX types here. */
1311 case '@': /* Member (class & variable) type */
1313 struct type
*domain
= read_type (pp
, objfile
);
1314 struct type
*memtype
;
1317 /* Invalid member type data format. */
1318 return error_type (pp
);
1321 memtype
= read_type (pp
, objfile
);
1322 type
= dbx_alloc_type (typenums
, objfile
);
1323 smash_to_member_type (type
, domain
, memtype
);
1327 case '#': /* Method (class & fn) type */
1328 if ((*pp
)[0] == '#')
1330 /* We'll get the parameter types from the name. */
1331 struct type
*return_type
;
1334 return_type
= read_type (pp
, objfile
);
1335 if (*(*pp
)++ != ';')
1336 complain (&invalid_member_complaint
, symnum
);
1337 type
= allocate_stub_method (return_type
);
1338 if (typenums
[0] != -1)
1339 *dbx_lookup_type (typenums
) = type
;
1343 struct type
*domain
= read_type (pp
, objfile
);
1344 struct type
*return_type
;
1347 if (*(*pp
)++ != ',')
1348 error ("invalid member type data format, at symtab pos %d.",
1351 return_type
= read_type (pp
, objfile
);
1352 args
= read_args (pp
, ';', objfile
);
1353 type
= dbx_alloc_type (typenums
, objfile
);
1354 smash_to_method_type (type
, domain
, return_type
, args
);
1358 case 'r': /* Range type */
1359 type
= read_range_type (pp
, typenums
, objfile
);
1360 if (typenums
[0] != -1)
1361 *dbx_lookup_type (typenums
) = type
;
1364 case 'b': /* Sun ACC builtin int type */
1365 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1366 if (typenums
[0] != -1)
1367 *dbx_lookup_type (typenums
) = type
;
1370 case 'R': /* Sun ACC builtin float type */
1371 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1372 if (typenums
[0] != -1)
1373 *dbx_lookup_type (typenums
) = type
;
1376 case 'e': /* Enumeration type */
1377 type
= dbx_alloc_type (typenums
, objfile
);
1378 type
= read_enum_type (pp
, type
, objfile
);
1379 *dbx_lookup_type (typenums
) = type
;
1382 case 's': /* Struct type */
1383 case 'u': /* Union type */
1384 type
= dbx_alloc_type (typenums
, objfile
);
1385 if (!TYPE_NAME (type
))
1387 TYPE_NAME (type
) = type_synonym_name
;
1389 type_synonym_name
= NULL
;
1390 switch (type_descriptor
)
1393 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1396 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1399 type
= read_struct_type (pp
, type
, objfile
);
1402 case 'a': /* Array type */
1404 return error_type (pp
);
1407 type
= dbx_alloc_type (typenums
, objfile
);
1408 type
= read_array_type (pp
, type
, objfile
);
1412 --*pp
; /* Go back to the symbol in error */
1413 /* Particularly important if it was \0! */
1414 return error_type (pp
);
1423 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1424 Return the proper type node for a given builtin type number. */
1426 static struct type
*
1427 rs6000_builtin_type (typenum
)
1430 /* default types are defined in dbxstclass.h. */
1433 return lookup_fundamental_type (current_objfile
, FT_INTEGER
);
1435 return lookup_fundamental_type (current_objfile
, FT_CHAR
);
1437 return lookup_fundamental_type (current_objfile
, FT_SHORT
);
1439 return lookup_fundamental_type (current_objfile
, FT_LONG
);
1441 return lookup_fundamental_type (current_objfile
, FT_UNSIGNED_CHAR
);
1443 return lookup_fundamental_type (current_objfile
, FT_SIGNED_CHAR
);
1445 return lookup_fundamental_type (current_objfile
, FT_UNSIGNED_SHORT
);
1447 return lookup_fundamental_type (current_objfile
, FT_UNSIGNED_INTEGER
);
1449 return lookup_fundamental_type (current_objfile
, FT_UNSIGNED_INTEGER
);
1451 return lookup_fundamental_type (current_objfile
, FT_UNSIGNED_LONG
);
1453 return lookup_fundamental_type (current_objfile
, FT_VOID
);
1455 return lookup_fundamental_type (current_objfile
, FT_FLOAT
);
1457 return lookup_fundamental_type (current_objfile
, FT_DBL_PREC_FLOAT
);
1459 return lookup_fundamental_type (current_objfile
, FT_EXT_PREC_FLOAT
);
1461 /* requires a builtin `integer' */
1462 return lookup_fundamental_type (current_objfile
, FT_INTEGER
);
1464 return lookup_fundamental_type (current_objfile
, FT_BOOLEAN
);
1466 /* requires builtin `short real' */
1467 return lookup_fundamental_type (current_objfile
, FT_FLOAT
);
1469 /* requires builtin `real' */
1470 return lookup_fundamental_type (current_objfile
, FT_FLOAT
);
1472 complain (&rs6000_builtin_complaint
, typenum
);
1477 /* This page contains subroutines of read_type. */
1479 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1480 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1481 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1483 /* Read member function stabs info for C++ classes. The form of each member
1486 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1488 An example with two member functions is:
1490 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1492 For the case of overloaded operators, the format is op$::*.funcs, where
1493 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1494 name (such as `+=') and `.' marks the end of the operator name. */
1497 read_member_functions (fip
, pp
, type
, objfile
)
1498 struct field_info
*fip
;
1501 struct objfile
*objfile
;
1505 /* Total number of member functions defined in this class. If the class
1506 defines two `f' functions, and one `g' function, then this will have
1508 int total_length
= 0;
1512 struct next_fnfield
*next
;
1513 struct fn_field fn_field
;
1515 struct type
*look_ahead_type
;
1516 struct next_fnfieldlist
*new_fnlist
;
1517 struct next_fnfield
*new_sublist
;
1521 /* Process each list until we find something that is not a member function
1522 or find the end of the functions. */
1526 /* We should be positioned at the start of the function name.
1527 Scan forward to find the first ':' and if it is not the
1528 first of a "::" delimiter, then this is not a member function. */
1540 look_ahead_type
= NULL
;
1543 new_fnlist
= (struct next_fnfieldlist
*)
1544 xmalloc (sizeof (struct next_fnfieldlist
));
1545 make_cleanup (free
, new_fnlist
);
1546 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1548 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1550 /* This is a completely wierd case. In order to stuff in the
1551 names that might contain colons (the usual name delimiter),
1552 Mike Tiemann defined a different name format which is
1553 signalled if the identifier is "op$". In that case, the
1554 format is "op$::XXXX." where XXXX is the name. This is
1555 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1556 /* This lets the user type "break operator+".
1557 We could just put in "+" as the name, but that wouldn't
1559 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1560 char *o
= opname
+ 3;
1562 /* Skip past '::'. */
1565 STABS_CONTINUE (pp
);
1571 main_fn_name
= savestring (opname
, o
- opname
);
1577 main_fn_name
= savestring (*pp
, p
- *pp
);
1578 /* Skip past '::'. */
1581 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1586 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1587 make_cleanup (free
, new_sublist
);
1588 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1590 /* Check for and handle cretinous dbx symbol name continuation! */
1591 if (look_ahead_type
== NULL
)
1594 STABS_CONTINUE (pp
);
1596 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1599 /* Invalid symtab info for member function. */
1605 /* g++ version 1 kludge */
1606 new_sublist
-> fn_field
.type
= look_ahead_type
;
1607 look_ahead_type
= NULL
;
1617 /* If this is just a stub, then we don't have the real name here. */
1619 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1621 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1622 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1623 new_sublist
-> fn_field
.is_stub
= 1;
1625 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1628 /* Set this member function's visibility fields. */
1631 case VISIBILITY_PRIVATE
:
1632 new_sublist
-> fn_field
.is_private
= 1;
1634 case VISIBILITY_PROTECTED
:
1635 new_sublist
-> fn_field
.is_protected
= 1;
1639 STABS_CONTINUE (pp
);
1642 case 'A': /* Normal functions. */
1643 new_sublist
-> fn_field
.is_const
= 0;
1644 new_sublist
-> fn_field
.is_volatile
= 0;
1647 case 'B': /* `const' member functions. */
1648 new_sublist
-> fn_field
.is_const
= 1;
1649 new_sublist
-> fn_field
.is_volatile
= 0;
1652 case 'C': /* `volatile' member function. */
1653 new_sublist
-> fn_field
.is_const
= 0;
1654 new_sublist
-> fn_field
.is_volatile
= 1;
1657 case 'D': /* `const volatile' member function. */
1658 new_sublist
-> fn_field
.is_const
= 1;
1659 new_sublist
-> fn_field
.is_volatile
= 1;
1662 case '*': /* File compiled with g++ version 1 -- no info */
1667 complain (&const_vol_complaint
, **pp
);
1674 /* virtual member function, followed by index.
1675 The sign bit is set to distinguish pointers-to-methods
1676 from virtual function indicies. Since the array is
1677 in words, the quantity must be shifted left by 1
1678 on 16 bit machine, and by 2 on 32 bit machine, forcing
1679 the sign bit out, and usable as a valid index into
1680 the array. Remove the sign bit here. */
1681 new_sublist
-> fn_field
.voffset
=
1682 (0x7fffffff & read_number (pp
, ';')) + 2;
1684 STABS_CONTINUE (pp
);
1685 if (**pp
== ';' || **pp
== '\0')
1687 /* Must be g++ version 1. */
1688 new_sublist
-> fn_field
.fcontext
= 0;
1692 /* Figure out from whence this virtual function came.
1693 It may belong to virtual function table of
1694 one of its baseclasses. */
1695 look_ahead_type
= read_type (pp
, objfile
);
1698 /* g++ version 1 overloaded methods. */
1702 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1711 look_ahead_type
= NULL
;
1717 /* static member function. */
1718 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1719 if (strncmp (new_sublist
-> fn_field
.physname
,
1720 main_fn_name
, strlen (main_fn_name
)))
1722 new_sublist
-> fn_field
.is_stub
= 1;
1728 complain (&member_fn_complaint
, (*pp
)[-1]);
1729 /* Fall through into normal member function. */
1732 /* normal member function. */
1733 new_sublist
-> fn_field
.voffset
= 0;
1734 new_sublist
-> fn_field
.fcontext
= 0;
1738 new_sublist
-> next
= sublist
;
1739 sublist
= new_sublist
;
1741 STABS_CONTINUE (pp
);
1743 while (**pp
!= ';' && **pp
!= '\0');
1747 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1748 obstack_alloc (&objfile
-> type_obstack
,
1749 sizeof (struct fn_field
) * length
);
1750 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
1751 sizeof (struct fn_field
) * length
);
1752 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
1754 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
1757 new_fnlist
-> fn_fieldlist
.length
= length
;
1758 new_fnlist
-> next
= fip
-> fnlist
;
1759 fip
-> fnlist
= new_fnlist
;
1761 total_length
+= length
;
1762 STABS_CONTINUE (pp
);
1767 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
1768 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
1769 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
1770 memset (TYPE_FN_FIELDLISTS (type
), 0,
1771 sizeof (struct fn_fieldlist
) * nfn_fields
);
1772 TYPE_NFN_FIELDS (type
) = nfn_fields
;
1773 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
1779 /* Special GNU C++ name.
1780 FIXME: Still need to properly handle parse error conditions. */
1783 read_cpp_abbrev (fip
, pp
, type
, objfile
)
1784 struct field_info
*fip
;
1787 struct objfile
*objfile
;
1793 struct type
*context
;
1803 /* At this point, *pp points to something like "22:23=*22...",
1804 where the type number before the ':' is the "context" and
1805 everything after is a regular type definition. Lookup the
1806 type, find it's name, and construct the field name. */
1808 context
= read_type (pp
, objfile
);
1812 case 'f': /* $vf -- a virtual function table pointer */
1813 fip
->list
->field
.name
=
1814 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
1817 case 'b': /* $vb -- a virtual bsomethingorother */
1818 name
= type_name_no_tag (context
);
1821 complain (&invalid_cpp_type_complaint
, symnum
);
1824 fip
->list
->field
.name
=
1825 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
1829 complain (&invalid_cpp_abbrev_complaint
, *pp
);
1830 fip
->list
->field
.name
=
1831 obconcat (&objfile
->type_obstack
,
1832 "INVALID_CPLUSPLUS_ABBREV", "", "");
1836 /* At this point, *pp points to the ':'. Skip it and read the
1842 complain (&invalid_cpp_abbrev_complaint
, *pp
);
1844 fip
->list
->field
.type
= read_type (pp
, objfile
);
1845 (*pp
)++; /* Skip the comma. */
1846 fip
->list
->field
.bitpos
= read_number (pp
, ';');
1847 /* This field is unpacked. */
1848 fip
->list
->field
.bitsize
= 0;
1849 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
1853 /* GNU C++ anonymous type. */
1854 complain (&stabs_general_complaint
, "g++ anonymous type $_ not handled");
1858 complain (&invalid_cpp_abbrev_complaint
, *pp
);
1863 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
1864 struct field_info
*fip
;
1868 struct objfile
*objfile
;
1870 fip
-> list
-> field
.name
=
1871 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
1874 /* This means we have a visibility for a field coming. */
1878 fip
-> list
-> visibility
= *(*pp
)++;
1879 switch (fip
-> list
-> visibility
)
1881 case VISIBILITY_PRIVATE
:
1882 case VISIBILITY_PROTECTED
:
1885 case VISIBILITY_PUBLIC
:
1890 /* Unknown visibility specifier. */
1891 complain (&stabs_general_complaint
,
1892 "unknown visibility specifier");
1899 /* normal dbx-style format, no explicit visibility */
1900 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
1903 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
1908 /* Possible future hook for nested types. */
1911 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
1917 /* Static class member. */
1918 fip
-> list
-> field
.bitpos
= (long) -1;
1924 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
1928 else if (**pp
!= ',')
1930 /* Bad structure-type format. */
1931 complain (&stabs_general_complaint
, "bad structure-type format");
1935 (*pp
)++; /* Skip the comma. */
1936 fip
-> list
-> field
.bitpos
= read_number (pp
, ',');
1937 fip
-> list
-> field
.bitsize
= read_number (pp
, ';');
1940 /* FIXME-tiemann: Can't the compiler put out something which
1941 lets us distinguish these? (or maybe just not put out anything
1942 for the field). What is the story here? What does the compiler
1943 really do? Also, patch gdb.texinfo for this case; I document
1944 it as a possible problem there. Search for "DBX-style". */
1946 /* This is wrong because this is identical to the symbols
1947 produced for GCC 0-size arrays. For example:
1952 The code which dumped core in such circumstances should be
1953 fixed not to dump core. */
1955 /* g++ -g0 can put out bitpos & bitsize zero for a static
1956 field. This does not give us any way of getting its
1957 class, so we can't know its name. But we can just
1958 ignore the field so we don't dump core and other nasty
1960 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
1962 complain (&dbx_class_complaint
);
1963 /* Ignore this field. */
1964 fip
-> list
= fip
-> list
-> next
;
1969 /* Detect an unpacked field and mark it as such.
1970 dbx gives a bit size for all fields.
1971 Note that forward refs cannot be packed,
1972 and treat enums as if they had the width of ints. */
1974 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
1975 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
1977 fip
-> list
-> field
.bitsize
= 0;
1979 if ((fip
-> list
-> field
.bitsize
1980 == 8 * TYPE_LENGTH (fip
-> list
-> field
.type
)
1981 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
1982 && (fip
-> list
-> field
.bitsize
1983 == 8 * TYPE_LENGTH (lookup_fundamental_type (objfile
, FT_INTEGER
)))
1987 fip
-> list
-> field
.bitpos
% 8 == 0)
1989 fip
-> list
-> field
.bitsize
= 0;
1995 /* Read struct or class data fields. They have the form:
1997 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
1999 At the end, we see a semicolon instead of a field.
2001 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2004 The optional VISIBILITY is one of:
2006 '/0' (VISIBILITY_PRIVATE)
2007 '/1' (VISIBILITY_PROTECTED)
2008 '/2' (VISIBILITY_PUBLIC)
2010 or nothing, for C style fields with public visibility. */
2013 read_struct_fields (fip
, pp
, type
, objfile
)
2014 struct field_info
*fip
;
2017 struct objfile
*objfile
;
2020 struct nextfield
*new;
2022 /* We better set p right now, in case there are no fields at all... */
2026 /* Read each data member type until we find the terminating ';' at the end of
2027 the data member list, or break for some other reason such as finding the
2028 start of the member function list. */
2032 STABS_CONTINUE (pp
);
2033 /* Get space to record the next field's data. */
2034 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2035 make_cleanup (free
, new);
2036 memset (new, 0, sizeof (struct nextfield
));
2037 new -> next
= fip
-> list
;
2040 /* Get the field name. */
2042 if (*p
== CPLUS_MARKER
)
2044 read_cpp_abbrev (fip
, pp
, type
, objfile
);
2048 /* Look for the ':' that separates the field name from the field
2049 values. Data members are delimited by a single ':', while member
2050 functions are delimited by a pair of ':'s. When we hit the member
2051 functions (if any), terminate scan loop and return. */
2058 /* Check to see if we have hit the member functions yet. */
2063 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2067 /* chill the list of fields: the last entry (at the head) is a
2068 partially constructed entry which we now scrub. */
2069 fip
-> list
= fip
-> list
-> next
;
2074 /* The stabs for C++ derived classes contain baseclass information which
2075 is marked by a '!' character after the total size. This function is
2076 called when we encounter the baseclass marker, and slurps up all the
2077 baseclass information.
2079 Immediately following the '!' marker is the number of base classes that
2080 the class is derived from, followed by information for each base class.
2081 For each base class, there are two visibility specifiers, a bit offset
2082 to the base class information within the derived class, a reference to
2083 the type for the base class, and a terminating semicolon.
2085 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2087 Baseclass information marker __________________|| | | | | | |
2088 Number of baseclasses __________________________| | | | | | |
2089 Visibility specifiers (2) ________________________| | | | | |
2090 Offset in bits from start of class _________________| | | | |
2091 Type number for base class ___________________________| | | |
2092 Visibility specifiers (2) _______________________________| | |
2093 Offset in bits from start of class ________________________| |
2094 Type number of base class ____________________________________|
2098 read_baseclasses (fip
, pp
, type
, objfile
)
2099 struct field_info
*fip
;
2102 struct objfile
*objfile
;
2105 struct nextfield
*new;
2113 /* Skip the '!' baseclass information marker. */
2117 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2118 TYPE_N_BASECLASSES (type
) = read_number (pp
, ',');
2121 /* Some stupid compilers have trouble with the following, so break
2122 it up into simpler expressions. */
2123 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2124 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2127 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2130 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2131 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2135 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2137 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2139 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2140 make_cleanup (free
, new);
2141 memset (new, 0, sizeof (struct nextfield
));
2142 new -> next
= fip
-> list
;
2144 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2146 STABS_CONTINUE (pp
);
2150 /* Nothing to do. */
2153 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2156 /* Bad visibility format. */
2160 new -> visibility
= *(*pp
)++;
2161 switch (new -> visibility
)
2163 case VISIBILITY_PRIVATE
:
2164 case VISIBILITY_PROTECTED
:
2165 case VISIBILITY_PUBLIC
:
2168 /* Bad visibility format. */
2172 /* The remaining value is the bit offset of the portion of the object
2173 corresponding to this baseclass. Always zero in the absence of
2174 multiple inheritance. */
2176 new -> field
.bitpos
= read_number (pp
, ',');
2178 /* The last piece of baseclass information is the type of the base
2179 class. Read it, and remember it's type name as this field's name. */
2181 new -> field
.type
= read_type (pp
, objfile
);
2182 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2184 /* skip trailing ';' and bump count of number of fields seen */
2190 /* The tail end of stabs for C++ classes that contain a virtual function
2191 pointer contains a tilde, a %, and a type number.
2192 The type number refers to the base class (possibly this class itself) which
2193 contains the vtable pointer for the current class.
2195 This function is called when we have parsed all the method declarations,
2196 so we can look for the vptr base class info. */
2199 read_tilde_fields (fip
, pp
, type
, objfile
)
2200 struct field_info
*fip
;
2203 struct objfile
*objfile
;
2207 STABS_CONTINUE (pp
);
2209 /* If we are positioned at a ';', then skip it. */
2219 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2221 /* Obsolete flags that used to indicate the presence
2222 of constructors and/or destructors. */
2226 /* Read either a '%' or the final ';'. */
2227 if (*(*pp
)++ == '%')
2229 /* The next number is the type number of the base class
2230 (possibly our own class) which supplies the vtable for
2231 this class. Parse it out, and search that class to find
2232 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2233 and TYPE_VPTR_FIELDNO. */
2238 t
= read_type (pp
, objfile
);
2240 while (*p
!= '\0' && *p
!= ';')
2246 /* Premature end of symbol. */
2250 TYPE_VPTR_BASETYPE (type
) = t
;
2251 if (type
== t
) /* Our own class provides vtbl ptr */
2253 for (i
= TYPE_NFIELDS (t
) - 1;
2254 i
>= TYPE_N_BASECLASSES (t
);
2257 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2258 sizeof (vptr_name
) - 1))
2260 TYPE_VPTR_FIELDNO (type
) = i
;
2264 /* Virtual function table field not found. */
2265 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2270 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2281 attach_fn_fields_to_type (fip
, type
)
2282 struct field_info
*fip
;
2283 register struct type
*type
;
2287 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2289 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2291 /* @@ Memory leak on objfile -> type_obstack? */
2294 TYPE_NFN_FIELDS_TOTAL (type
) +=
2295 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2298 for (n
= TYPE_NFN_FIELDS (type
);
2299 fip
-> fnlist
!= NULL
;
2300 fip
-> fnlist
= fip
-> fnlist
-> next
)
2302 --n
; /* Circumvent Sun3 compiler bug */
2303 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2308 /* Create the vector of fields, and record how big it is.
2309 We need this info to record proper virtual function table information
2310 for this class's virtual functions. */
2313 attach_fields_to_type (fip
, type
, objfile
)
2314 struct field_info
*fip
;
2315 register struct type
*type
;
2316 struct objfile
*objfile
;
2318 register int nfields
= 0;
2319 register int non_public_fields
= 0;
2320 register struct nextfield
*scan
;
2322 /* Count up the number of fields that we have, as well as taking note of
2323 whether or not there are any non-public fields, which requires us to
2324 allocate and build the private_field_bits and protected_field_bits
2327 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2330 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2332 non_public_fields
++;
2336 /* Now we know how many fields there are, and whether or not there are any
2337 non-public fields. Record the field count, allocate space for the
2338 array of fields, and create blank visibility bitfields if necessary. */
2340 TYPE_NFIELDS (type
) = nfields
;
2341 TYPE_FIELDS (type
) = (struct field
*)
2342 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2343 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2345 if (non_public_fields
)
2347 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2349 TYPE_FIELD_PRIVATE_BITS (type
) =
2350 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2351 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2353 TYPE_FIELD_PROTECTED_BITS (type
) =
2354 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2355 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2358 /* Copy the saved-up fields into the field vector. Start from the head
2359 of the list, adding to the tail of the field array, so that they end
2360 up in the same order in the array in which they were added to the list. */
2362 while (nfields
-- > 0)
2364 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2365 switch (fip
-> list
-> visibility
)
2367 case VISIBILITY_PRIVATE
:
2368 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2371 case VISIBILITY_PROTECTED
:
2372 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2375 case VISIBILITY_PUBLIC
:
2379 /* Should warn about this unknown visibility? */
2382 fip
-> list
= fip
-> list
-> next
;
2387 /* Read the description of a structure (or union type) and return an object
2388 describing the type.
2390 PP points to a character pointer that points to the next unconsumed token
2391 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2392 *PP will point to "4a:1,0,32;;".
2394 TYPE points to an incomplete type that needs to be filled in.
2396 OBJFILE points to the current objfile from which the stabs information is
2397 being read. (Note that it is redundant in that TYPE also contains a pointer
2398 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2401 static struct type
*
2402 read_struct_type (pp
, type
, objfile
)
2405 struct objfile
*objfile
;
2407 struct cleanup
*back_to
;
2408 struct field_info fi
;
2413 back_to
= make_cleanup (null_cleanup
, 0);
2415 INIT_CPLUS_SPECIFIC (type
);
2416 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2418 /* First comes the total size in bytes. */
2420 TYPE_LENGTH (type
) = read_number (pp
, 0);
2422 /* Now read the baseclasses, if any, read the regular C struct or C++
2423 class member fields, attach the fields to the type, read the C++
2424 member functions, attach them to the type, and then read any tilde
2425 field (baseclass specifier for the class holding the main vtable). */
2427 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2428 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2429 || !attach_fields_to_type (&fi
, type
, objfile
)
2430 || !read_member_functions (&fi
, pp
, type
, objfile
)
2431 || !attach_fn_fields_to_type (&fi
, type
)
2432 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2434 do_cleanups (back_to
);
2435 return (error_type (pp
));
2438 do_cleanups (back_to
);
2442 /* Read a definition of an array type,
2443 and create and return a suitable type object.
2444 Also creates a range type which represents the bounds of that
2447 static struct type
*
2448 read_array_type (pp
, type
, objfile
)
2450 register struct type
*type
;
2451 struct objfile
*objfile
;
2453 struct type
*index_type
, *element_type
, *range_type
;
2457 /* Format of an array type:
2458 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2461 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2462 for these, produce a type like float[][]. */
2464 index_type
= read_type (pp
, objfile
);
2466 /* Improper format of array type decl. */
2467 return error_type (pp
);
2470 if (!(**pp
>= '0' && **pp
<= '9'))
2475 lower
= read_number (pp
, ';');
2477 if (!(**pp
>= '0' && **pp
<= '9'))
2482 upper
= read_number (pp
, ';');
2484 element_type
= read_type (pp
, objfile
);
2493 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2494 type
= create_array_type (type
, element_type
, range_type
);
2496 /* If we have an array whose element type is not yet known, but whose
2497 bounds *are* known, record it to be adjusted at the end of the file. */
2499 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2501 add_undefined_type (type
);
2508 /* Read a definition of an enumeration type,
2509 and create and return a suitable type object.
2510 Also defines the symbols that represent the values of the type. */
2512 static struct type
*
2513 read_enum_type (pp
, type
, objfile
)
2515 register struct type
*type
;
2516 struct objfile
*objfile
;
2521 register struct symbol
*sym
;
2523 struct pending
**symlist
;
2524 struct pending
*osyms
, *syms
;
2528 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2529 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2530 to do? For now, force all enum values to file scope. */
2531 if (within_function
)
2532 symlist
= &local_symbols
;
2535 symlist
= &file_symbols
;
2537 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2539 /* Read the value-names and their values.
2540 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2541 A semicolon or comma instead of a NAME means the end. */
2542 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2544 STABS_CONTINUE (pp
);
2546 while (*p
!= ':') p
++;
2547 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2549 n
= read_number (pp
, ',');
2551 sym
= (struct symbol
*)
2552 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2553 memset (sym
, 0, sizeof (struct symbol
));
2554 SYMBOL_NAME (sym
) = name
;
2555 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2556 SYMBOL_CLASS (sym
) = LOC_CONST
;
2557 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2558 SYMBOL_VALUE (sym
) = n
;
2559 add_symbol_to_list (sym
, symlist
);
2564 (*pp
)++; /* Skip the semicolon. */
2566 /* Now fill in the fields of the type-structure. */
2568 TYPE_LENGTH (type
) = sizeof (int);
2569 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2570 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2571 TYPE_NFIELDS (type
) = nsyms
;
2572 TYPE_FIELDS (type
) = (struct field
*)
2573 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2574 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2576 /* Find the symbols for the values and put them into the type.
2577 The symbols can be found in the symlist that we put them on
2578 to cause them to be defined. osyms contains the old value
2579 of that symlist; everything up to there was defined by us. */
2580 /* Note that we preserve the order of the enum constants, so
2581 that in something like "enum {FOO, LAST_THING=FOO}" we print
2582 FOO, not LAST_THING. */
2584 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2589 for (; j
< syms
->nsyms
; j
++,n
++)
2591 struct symbol
*xsym
= syms
->symbol
[j
];
2592 SYMBOL_TYPE (xsym
) = type
;
2593 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2594 TYPE_FIELD_VALUE (type
, n
) = 0;
2595 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2596 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2603 /* This screws up perfectly good C programs with enums. FIXME. */
2604 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2605 if(TYPE_NFIELDS(type
) == 2 &&
2606 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2607 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2608 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2609 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2610 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2616 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2617 typedefs in every file (for int, long, etc):
2619 type = b <signed> <width>; <offset>; <nbits>
2620 signed = u or s. Possible c in addition to u or s (for char?).
2621 offset = offset from high order bit to start bit of type.
2622 width is # bytes in object of this type, nbits is # bits in type.
2624 The width/offset stuff appears to be for small objects stored in
2625 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2628 static struct type
*
2629 read_sun_builtin_type (pp
, typenums
, objfile
)
2632 struct objfile
*objfile
;
2646 return error_type (pp
);
2650 /* For some odd reason, all forms of char put a c here. This is strange
2651 because no other type has this honor. We can safely ignore this because
2652 we actually determine 'char'acterness by the number of bits specified in
2658 /* The first number appears to be the number of bytes occupied
2659 by this type, except that unsigned short is 4 instead of 2.
2660 Since this information is redundant with the third number,
2661 we will ignore it. */
2662 read_number (pp
, ';');
2664 /* The second number is always 0, so ignore it too. */
2665 read_number (pp
, ';');
2667 /* The third number is the number of bits for this type. */
2668 nbits
= read_number (pp
, 0);
2670 /* FIXME. Here we should just be able to make a type of the right
2671 number of bits and signedness. FIXME. */
2673 if (nbits
== TARGET_LONG_LONG_BIT
)
2674 return (lookup_fundamental_type (objfile
,
2675 signed_type
? FT_LONG_LONG
: FT_UNSIGNED_LONG_LONG
));
2677 if (nbits
== TARGET_INT_BIT
)
2679 /* FIXME -- the only way to distinguish `int' from `long'
2680 is to look at its name! */
2683 if (long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
2684 return lookup_fundamental_type (objfile
, FT_LONG
);
2686 return lookup_fundamental_type (objfile
, FT_INTEGER
);
2690 if (long_kludge_name
2691 && ((long_kludge_name
[0] == 'u' /* unsigned */ &&
2692 long_kludge_name
[9] == 'l' /* long */)
2693 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
2694 return lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
);
2696 return lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
);
2700 if (nbits
== TARGET_SHORT_BIT
)
2701 return (lookup_fundamental_type (objfile
,
2702 signed_type
? FT_SHORT
: FT_UNSIGNED_SHORT
));
2704 if (nbits
== TARGET_CHAR_BIT
)
2705 return (lookup_fundamental_type (objfile
,
2706 signed_type
? FT_CHAR
: FT_UNSIGNED_CHAR
));
2709 return lookup_fundamental_type (objfile
, FT_VOID
);
2711 return error_type (pp
);
2714 static struct type
*
2715 read_sun_floating_type (pp
, typenums
, objfile
)
2718 struct objfile
*objfile
;
2722 /* The first number has more details about the type, for example
2723 FN_COMPLEX. See the sun stab.h. */
2724 read_number (pp
, ';');
2726 /* The second number is the number of bytes occupied by this type */
2727 nbytes
= read_number (pp
, ';');
2730 return error_type (pp
);
2732 if (nbytes
== TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
)
2733 return lookup_fundamental_type (objfile
, FT_FLOAT
);
2735 if (nbytes
== TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
)
2736 return lookup_fundamental_type (objfile
, FT_DBL_PREC_FLOAT
);
2738 if (nbytes
== TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
)
2739 return lookup_fundamental_type (objfile
, FT_EXT_PREC_FLOAT
);
2741 return error_type (pp
);
2744 /* Read a number from the string pointed to by *PP.
2745 The value of *PP is advanced over the number.
2746 If END is nonzero, the character that ends the
2747 number must match END, or an error happens;
2748 and that character is skipped if it does match.
2749 If END is zero, *PP is left pointing to that character.
2751 If the number fits in a long, set *VALUE and set *BITS to 0.
2752 If not, set *BITS to be the number of bits in the number.
2754 If encounter garbage, set *BITS to -1. */
2757 read_huge_number (pp
, end
, valu
, bits
)
2778 /* Leading zero means octal. GCC uses this to output values larger
2779 than an int (because that would be hard in decimal). */
2786 upper_limit
= LONG_MAX
/ radix
;
2787 while ((c
= *p
++) >= '0' && c
<= ('0' + radix
))
2789 if (n
<= upper_limit
)
2792 n
+= c
- '0'; /* FIXME this overflows anyway */
2797 /* This depends on large values being output in octal, which is
2804 /* Ignore leading zeroes. */
2808 else if (c
== '2' || c
== '3')
2834 /* Large decimal constants are an error (because it is hard to
2835 count how many bits are in them). */
2841 /* -0x7f is the same as 0x80. So deal with it by adding one to
2842 the number of bits. */
2857 static struct type
*
2858 read_range_type (pp
, typenums
, objfile
)
2861 struct objfile
*objfile
;
2867 struct type
*result_type
;
2868 struct type
*index_type
;
2870 /* First comes a type we are a subrange of.
2871 In C it is usually 0, 1 or the type being defined. */
2872 read_type_number (pp
, rangenums
);
2873 self_subrange
= (rangenums
[0] == typenums
[0] &&
2874 rangenums
[1] == typenums
[1]);
2876 /* A semicolon should now follow; skip it. */
2880 /* The remaining two operands are usually lower and upper bounds
2881 of the range. But in some special cases they mean something else. */
2882 read_huge_number (pp
, ';', &n2
, &n2bits
);
2883 read_huge_number (pp
, ';', &n3
, &n3bits
);
2885 if (n2bits
== -1 || n3bits
== -1)
2886 return error_type (pp
);
2888 /* If limits are huge, must be large integral type. */
2889 if (n2bits
!= 0 || n3bits
!= 0)
2891 char got_signed
= 0;
2892 char got_unsigned
= 0;
2893 /* Number of bits in the type. */
2896 /* Range from 0 to <large number> is an unsigned large integral type. */
2897 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
2902 /* Range from <large number> to <large number>-1 is a large signed
2904 else if (n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
2910 /* Check for "long long". */
2911 if (got_signed
&& nbits
== TARGET_LONG_LONG_BIT
)
2912 return (lookup_fundamental_type (objfile
, FT_LONG_LONG
));
2913 if (got_unsigned
&& nbits
== TARGET_LONG_LONG_BIT
)
2914 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG_LONG
));
2916 if (got_signed
|| got_unsigned
)
2918 result_type
= alloc_type (objfile
);
2919 TYPE_LENGTH (result_type
) = nbits
/ TARGET_CHAR_BIT
;
2920 TYPE_CODE (result_type
) = TYPE_CODE_INT
;
2922 TYPE_FLAGS (result_type
) |= TYPE_FLAG_UNSIGNED
;
2926 return error_type (pp
);
2929 /* A type defined as a subrange of itself, with bounds both 0, is void. */
2930 if (self_subrange
&& n2
== 0 && n3
== 0)
2931 return (lookup_fundamental_type (objfile
, FT_VOID
));
2933 /* If n3 is zero and n2 is not, we want a floating type,
2934 and n2 is the width in bytes.
2936 Fortran programs appear to use this for complex types also,
2937 and they give no way to distinguish between double and single-complex!
2938 We don't have complex types, so we would lose on all fortran files!
2939 So return type `double' for all of those. It won't work right
2940 for the complex values, but at least it makes the file loadable.
2942 FIXME, we may be able to distinguish these by their names. FIXME. */
2944 if (n3
== 0 && n2
> 0)
2946 if (n2
== sizeof (float))
2947 return (lookup_fundamental_type (objfile
, FT_FLOAT
));
2948 return (lookup_fundamental_type (objfile
, FT_DBL_PREC_FLOAT
));
2951 /* If the upper bound is -1, it must really be an unsigned int. */
2953 else if (n2
== 0 && n3
== -1)
2955 /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
2956 long' is to look at its name! */
2958 long_kludge_name
&& ((long_kludge_name
[0] == 'u' /* unsigned */ &&
2959 long_kludge_name
[9] == 'l' /* long */)
2960 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
2961 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
));
2963 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
));
2966 /* Special case: char is defined (Who knows why) as a subrange of
2967 itself with range 0-127. */
2968 else if (self_subrange
&& n2
== 0 && n3
== 127)
2969 return (lookup_fundamental_type (objfile
, FT_CHAR
));
2971 /* Assumptions made here: Subrange of self is equivalent to subrange
2972 of int. FIXME: Host and target type-sizes assumed the same. */
2973 /* FIXME: This is the *only* place in GDB that depends on comparing
2974 some type to a builtin type with ==. Fix it! */
2976 && (self_subrange
||
2977 *dbx_lookup_type (rangenums
) == lookup_fundamental_type (objfile
, FT_INTEGER
)))
2979 /* an unsigned type */
2980 #ifdef CC_HAS_LONG_LONG
2981 if (n3
== - sizeof (long long))
2982 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG_LONG
));
2984 /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
2985 long' is to look at its name! */
2986 if (n3
== (unsigned long)~0L &&
2987 long_kludge_name
&& ((long_kludge_name
[0] == 'u' /* unsigned */ &&
2988 long_kludge_name
[9] == 'l' /* long */)
2989 || (long_kludge_name
[0] == 'l' /* long unsigned */)))
2990 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_LONG
));
2991 if (n3
== (unsigned int)~0L)
2992 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_INTEGER
));
2993 if (n3
== (unsigned short)~0L)
2994 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_SHORT
));
2995 if (n3
== (unsigned char)~0L)
2996 return (lookup_fundamental_type (objfile
, FT_UNSIGNED_CHAR
));
2998 #ifdef CC_HAS_LONG_LONG
2999 else if (n3
== 0 && n2
== -sizeof (long long))
3000 return (lookup_fundamental_type (objfile
, FT_LONG_LONG
));
3002 else if (n2
== -n3
-1)
3005 /* FIXME -- the only way to distinguish `int' from `long' is to look
3007 if ((n3
==(long)(((unsigned long)1 << (8 * sizeof (long) - 1)) - 1)) &&
3008 long_kludge_name
&& long_kludge_name
[0] == 'l' /* long */)
3009 return (lookup_fundamental_type (objfile
, FT_LONG
));
3010 if (n3
== (long)(((unsigned long)1 << (8 * sizeof (int) - 1)) - 1))
3011 return (lookup_fundamental_type (objfile
, FT_INTEGER
));
3012 if (n3
== ( 1 << (8 * sizeof (short) - 1)) - 1)
3013 return (lookup_fundamental_type (objfile
, FT_SHORT
));
3014 if (n3
== ( 1 << (8 * sizeof (char) - 1)) - 1)
3015 return (lookup_fundamental_type (objfile
, FT_SIGNED_CHAR
));
3018 /* We have a real range type on our hands. Allocate space and
3019 return a real pointer. */
3021 /* At this point I don't have the faintest idea how to deal with
3022 a self_subrange type; I'm going to assume that this is used
3023 as an idiom, and that all of them are special cases. So . . . */
3025 return error_type (pp
);
3027 index_type
= *dbx_lookup_type (rangenums
);
3028 if (index_type
== NULL
)
3030 complain (&range_type_base_complaint
, rangenums
[1]);
3031 index_type
= lookup_fundamental_type (objfile
, FT_INTEGER
);
3034 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3035 return (result_type
);
3038 /* Read a number from the string pointed to by *PP.
3039 The value of *PP is advanced over the number.
3040 If END is nonzero, the character that ends the
3041 number must match END, or an error happens;
3042 and that character is skipped if it does match.
3043 If END is zero, *PP is left pointing to that character. */
3046 read_number (pp
, end
)
3050 register char *p
= *pp
;
3051 register long n
= 0;
3055 /* Handle an optional leading minus sign. */
3063 /* Read the digits, as far as they go. */
3065 while ((c
= *p
++) >= '0' && c
<= '9')
3073 error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c
, symnum
);
3082 /* Read in an argument list. This is a list of types, separated by commas
3083 and terminated with END. Return the list of types read in, or (struct type
3084 **)-1 if there is an error. */
3086 static struct type
**
3087 read_args (pp
, end
, objfile
)
3090 struct objfile
*objfile
;
3092 /* FIXME! Remove this arbitrary limit! */
3093 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3099 /* Invalid argument list: no ','. */
3100 return (struct type
**)-1;
3102 STABS_CONTINUE (pp
);
3103 types
[n
++] = read_type (pp
, objfile
);
3105 (*pp
)++; /* get past `end' (the ':' character) */
3109 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3111 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3113 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3114 memset (rval
+ n
, 0, sizeof (struct type
*));
3118 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3120 memcpy (rval
, types
, n
* sizeof (struct type
*));
3124 /* Add a common block's start address to the offset of each symbol
3125 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3126 the common block name). */
3129 fix_common_block (sym
, valu
)
3133 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3134 for ( ; next
; next
= next
->next
)
3137 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3138 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3144 /* What about types defined as forward references inside of a small lexical
3146 /* Add a type to the list of undefined types to be checked through
3147 once this file has been read in. */
3150 add_undefined_type (type
)
3153 if (undef_types_length
== undef_types_allocated
)
3155 undef_types_allocated
*= 2;
3156 undef_types
= (struct type
**)
3157 xrealloc ((char *) undef_types
,
3158 undef_types_allocated
* sizeof (struct type
*));
3160 undef_types
[undef_types_length
++] = type
;
3163 /* Go through each undefined type, see if it's still undefined, and fix it
3164 up if possible. We have two kinds of undefined types:
3166 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3167 Fix: update array length using the element bounds
3168 and the target type's length.
3169 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3170 yet defined at the time a pointer to it was made.
3171 Fix: Do a full lookup on the struct/union tag. */
3173 cleanup_undefined_types ()
3177 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3179 switch (TYPE_CODE (*type
))
3182 case TYPE_CODE_STRUCT
:
3183 case TYPE_CODE_UNION
:
3184 case TYPE_CODE_ENUM
:
3186 /* Check if it has been defined since. */
3187 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3189 struct pending
*ppt
;
3191 /* Name of the type, without "struct" or "union" */
3192 char *typename
= TYPE_NAME (*type
);
3194 if (!strncmp (typename
, "struct ", 7))
3196 if (!strncmp (typename
, "union ", 6))
3198 if (!strncmp (typename
, "enum ", 5))
3201 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3203 for (i
= 0; i
< ppt
->nsyms
; i
++)
3205 struct symbol
*sym
= ppt
->symbol
[i
];
3207 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3208 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3209 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3211 && STREQ (SYMBOL_NAME (sym
), typename
))
3213 memcpy (*type
, SYMBOL_TYPE (sym
),
3214 sizeof (struct type
));
3222 case TYPE_CODE_ARRAY
:
3224 struct type
*range_type
;
3227 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3229 if (TYPE_NFIELDS (*type
) != 1)
3231 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3232 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3235 /* Now recompute the length of the array type, based on its
3236 number of elements and the target type's length. */
3237 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3238 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3239 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3240 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3246 error ("GDB internal error. cleanup_undefined_types with bad type %d.", TYPE_CODE (*type
));
3250 undef_types_length
= 0;
3253 /* Scan through all of the global symbols defined in the object file,
3254 assigning values to the debugging symbols that need to be assigned
3255 to. Get these symbols from the minimal symbol table. */
3258 scan_file_globals (objfile
)
3259 struct objfile
*objfile
;
3262 struct minimal_symbol
*msymbol
;
3263 struct symbol
*sym
, *prev
;
3265 if (objfile
->msymbols
== 0) /* Beware the null file. */
3268 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3274 /* Get the hash index and check all the symbols
3275 under that hash index. */
3277 hash
= hashname (SYMBOL_NAME (msymbol
));
3279 for (sym
= global_sym_chain
[hash
]; sym
;)
3281 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3282 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3284 /* Splice this symbol out of the hash chain and
3285 assign the value we have to it. */
3288 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3292 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3295 /* Check to see whether we need to fix up a common block. */
3296 /* Note: this code might be executed several times for
3297 the same symbol if there are multiple references. */
3299 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3301 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3305 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3310 sym
= SYMBOL_VALUE_CHAIN (prev
);
3314 sym
= global_sym_chain
[hash
];
3320 sym
= SYMBOL_VALUE_CHAIN (sym
);
3326 /* Initialize anything that needs initializing when starting to read
3327 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3335 /* Initialize anything that needs initializing when a completely new
3336 symbol file is specified (not just adding some symbols from another
3337 file, e.g. a shared library). */
3340 stabsread_new_init ()
3342 /* Empty the hash table of global syms looking for values. */
3343 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3346 /* Initialize anything that needs initializing at the same time as
3347 start_symtab() is called. */
3351 global_stabs
= NULL
; /* AIX COFF */
3352 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3353 n_this_object_header_files
= 1;
3354 type_vector_length
= 0;
3355 type_vector
= (struct type
**) 0;
3358 /* Call after end_symtab() */
3364 free ((char *) type_vector
);
3367 type_vector_length
= 0;
3368 previous_stab_code
= 0;
3372 finish_global_stabs (objfile
)
3373 struct objfile
*objfile
;
3377 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3378 free ((PTR
) global_stabs
);
3379 global_stabs
= NULL
;
3383 /* Initializer for this module */
3386 _initialize_stabsread ()
3388 undef_types_allocated
= 20;
3389 undef_types_length
= 0;
3390 undef_types
= (struct type
**)
3391 xmalloc (undef_types_allocated
* sizeof (struct type
*));