1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
34 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
36 #include "complaints.h"
41 /* Ask stabsread.h to define the vars it normally declares `extern'. */
43 #include "stabsread.h" /* Our own declarations */
46 /* The routines that read and process a complete stabs for a C struct or
47 C++ class pass lists of data member fields and lists of member function
48 fields in an instance of a field_info structure, as defined below.
49 This is part of some reorganization of low level C++ support and is
50 expected to eventually go away... (FIXME) */
56 struct nextfield
*next
;
58 /* This is the raw visibility from the stab. It is not checked
59 for being one of the visibilities we recognize, so code which
60 examines this field better be able to deal. */
65 struct next_fnfieldlist
67 struct next_fnfieldlist
*next
;
68 struct fn_fieldlist fn_fieldlist
;
73 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
75 static long read_huge_number
PARAMS ((char **, int, int *));
77 static struct type
*error_type
PARAMS ((char **));
80 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
84 fix_common_block
PARAMS ((struct symbol
*, int));
87 read_type_number
PARAMS ((char **, int *));
90 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
93 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
96 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
99 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
102 rs6000_builtin_type
PARAMS ((int));
105 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
109 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
113 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
117 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
121 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
124 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
128 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
131 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
133 static struct type
**
134 read_args
PARAMS ((char **, int, struct objfile
*));
137 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
140 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
141 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
143 /* Define this as 1 if a pcc declaration of a char or short argument
144 gives the correct address. Otherwise assume pcc gives the
145 address of the corresponding int, which is not the same on a
146 big-endian machine. */
148 #ifndef BELIEVE_PCC_PROMOTION
149 #define BELIEVE_PCC_PROMOTION 0
153 struct complaint dbx_class_complaint
=
155 "encountered DBX-style class variable debugging information.\n\
156 You seem to have compiled your program with \
157 \"g++ -g0\" instead of \"g++ -g\".\n\
158 Therefore GDB will not know about your class variables", 0, 0
162 struct complaint invalid_cpp_abbrev_complaint
=
163 {"invalid C++ abbreviation `%s'", 0, 0};
165 struct complaint invalid_cpp_type_complaint
=
166 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
168 struct complaint member_fn_complaint
=
169 {"member function type missing, got '%c'", 0, 0};
171 struct complaint const_vol_complaint
=
172 {"const/volatile indicator missing, got '%c'", 0, 0};
174 struct complaint error_type_complaint
=
175 {"debug info mismatch between compiler and debugger", 0, 0};
177 struct complaint invalid_member_complaint
=
178 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
180 struct complaint range_type_base_complaint
=
181 {"base type %d of range type is not defined", 0, 0};
183 struct complaint reg_value_complaint
=
184 {"register number too large in symbol %s", 0, 0};
186 struct complaint vtbl_notfound_complaint
=
187 {"virtual function table pointer not found when defining class `%s'", 0, 0};
189 struct complaint unrecognized_cplus_name_complaint
=
190 {"Unknown C++ symbol name `%s'", 0, 0};
192 struct complaint rs6000_builtin_complaint
=
193 {"Unknown builtin type %d", 0, 0};
195 struct complaint stabs_general_complaint
=
198 /* Make a list of forward references which haven't been defined. */
200 static struct type
**undef_types
;
201 static int undef_types_allocated
;
202 static int undef_types_length
;
204 /* Check for and handle cretinous stabs symbol name continuation! */
205 #define STABS_CONTINUE(pp) \
207 if (**(pp) == '\\') *(pp) = next_symbol_text (); \
211 /* Look up a dbx type-number pair. Return the address of the slot
212 where the type for that number-pair is stored.
213 The number-pair is in TYPENUMS.
215 This can be used for finding the type associated with that pair
216 or for associating a new type with the pair. */
219 dbx_lookup_type (typenums
)
222 register int filenum
= typenums
[0];
223 register int index
= typenums
[1];
225 register int real_filenum
;
226 register struct header_file
*f
;
229 if (filenum
== -1) /* -1,-1 is for temporary types. */
232 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
234 static struct complaint msg
= {"\
235 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
237 complain (&msg
, filenum
, index
, symnum
);
245 /* Caller wants address of address of type. We think
246 that negative (rs6k builtin) types will never appear as
247 "lvalues", (nor should they), so we stuff the real type
248 pointer into a temp, and return its address. If referenced,
249 this will do the right thing. */
250 static struct type
*temp_type
;
252 temp_type
= rs6000_builtin_type(index
);
256 /* Type is defined outside of header files.
257 Find it in this object file's type vector. */
258 if (index
>= type_vector_length
)
260 old_len
= type_vector_length
;
263 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
264 type_vector
= (struct type
**)
265 malloc (type_vector_length
* sizeof (struct type
*));
267 while (index
>= type_vector_length
)
269 type_vector_length
*= 2;
271 type_vector
= (struct type
**)
272 xrealloc ((char *) type_vector
,
273 (type_vector_length
* sizeof (struct type
*)));
274 memset (&type_vector
[old_len
], 0,
275 (type_vector_length
- old_len
) * sizeof (struct type
*));
277 return (&type_vector
[index
]);
281 real_filenum
= this_object_header_files
[filenum
];
283 if (real_filenum
>= n_header_files
)
285 struct type
*temp_type
;
286 struct type
**temp_type_p
;
288 warning ("GDB internal error: bad real_filenum");
291 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
292 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
293 *temp_type_p
= temp_type
;
297 f
= &header_files
[real_filenum
];
299 f_orig_length
= f
->length
;
300 if (index
>= f_orig_length
)
302 while (index
>= f
->length
)
306 f
->vector
= (struct type
**)
307 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
308 memset (&f
->vector
[f_orig_length
], 0,
309 (f
->length
- f_orig_length
) * sizeof (struct type
*));
311 return (&f
->vector
[index
]);
315 /* Make sure there is a type allocated for type numbers TYPENUMS
316 and return the type object.
317 This can create an empty (zeroed) type object.
318 TYPENUMS may be (-1, -1) to return a new type object that is not
319 put into the type vector, and so may not be referred to by number. */
322 dbx_alloc_type (typenums
, objfile
)
324 struct objfile
*objfile
;
326 register struct type
**type_addr
;
328 if (typenums
[0] == -1)
330 return (alloc_type (objfile
));
333 type_addr
= dbx_lookup_type (typenums
);
335 /* If we are referring to a type not known at all yet,
336 allocate an empty type for it.
337 We will fill it in later if we find out how. */
340 *type_addr
= alloc_type (objfile
);
346 /* for all the stabs in a given stab vector, build appropriate types
347 and fix their symbols in given symbol vector. */
350 patch_block_stabs (symbols
, stabs
, objfile
)
351 struct pending
*symbols
;
352 struct pending_stabs
*stabs
;
353 struct objfile
*objfile
;
363 /* for all the stab entries, find their corresponding symbols and
364 patch their types! */
366 for (ii
= 0; ii
< stabs
->count
; ++ii
)
368 name
= stabs
->stab
[ii
];
369 pp
= (char*) strchr (name
, ':');
370 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
373 /* On xcoff, if a global is defined and never referenced,
374 ld will remove it from the executable. There is then
375 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
376 sym
= (struct symbol
*)
377 obstack_alloc (&objfile
->symbol_obstack
,
378 sizeof (struct symbol
));
380 memset (sym
, 0, sizeof (struct symbol
));
381 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
382 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
384 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
386 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
388 /* I don't think the linker does this with functions,
389 so as far as I know this is never executed.
390 But it doesn't hurt to check. */
392 lookup_function_type (read_type (&pp
, objfile
));
396 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
398 add_symbol_to_list (sym
, &global_symbols
);
403 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
406 lookup_function_type (read_type (&pp
, objfile
));
410 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
418 /* Read a number by which a type is referred to in dbx data,
419 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
420 Just a single number N is equivalent to (0,N).
421 Return the two numbers by storing them in the vector TYPENUMS.
422 TYPENUMS will then be used as an argument to dbx_lookup_type.
424 Returns 0 for success, -1 for error. */
427 read_type_number (pp
, typenums
)
429 register int *typenums
;
435 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
436 if (nbits
!= 0) return -1;
437 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
438 if (nbits
!= 0) return -1;
443 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
444 if (nbits
!= 0) return -1;
450 /* To handle GNU C++ typename abbreviation, we need to be able to
451 fill in a type's name as soon as space for that type is allocated.
452 `type_synonym_name' is the name of the type being allocated.
453 It is cleared as soon as it is used (lest all allocated types
456 static char *type_synonym_name
;
460 define_symbol (valu
, string
, desc
, type
, objfile
)
465 struct objfile
*objfile
;
467 register struct symbol
*sym
;
468 char *p
= (char *) strchr (string
, ':');
473 /* We would like to eliminate nameless symbols, but keep their types.
474 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
475 to type 2, but, should not create a symbol to address that type. Since
476 the symbol will be nameless, there is no way any user can refer to it. */
480 /* Ignore syms with empty names. */
484 /* Ignore old-style symbols from cc -go */
488 /* If a nameless stab entry, all we need is the type, not the symbol.
489 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
490 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
492 sym
= (struct symbol
*)
493 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
494 memset (sym
, 0, sizeof (struct symbol
));
496 if (processing_gcc_compilation
)
498 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
499 number of bytes occupied by a type or object, which we ignore. */
500 SYMBOL_LINE(sym
) = desc
;
504 SYMBOL_LINE(sym
) = 0; /* unknown */
507 if (string
[0] == CPLUS_MARKER
)
509 /* Special GNU C++ names. */
513 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
514 &objfile
-> symbol_obstack
);
517 case 'v': /* $vtbl_ptr_type */
518 /* Was: SYMBOL_NAME (sym) = "vptr"; */
522 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
523 &objfile
-> symbol_obstack
);
527 /* This was an anonymous type that was never fixed up. */
531 complain (&unrecognized_cplus_name_complaint
, string
);
532 goto normal
; /* Do *something* with it */
538 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
539 SYMBOL_NAME (sym
) = (char *)
540 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
541 /* Open-coded memcpy--saves function call time. */
542 /* FIXME: Does it really? Try replacing with simple strcpy and
543 try it on an executable with a large symbol table. */
544 /* FIXME: considering that gcc can open code memcpy anyway, I
545 doubt it. xoxorich. */
547 register char *p1
= string
;
548 register char *p2
= SYMBOL_NAME (sym
);
556 /* If this symbol is from a C++ compilation, then attempt to cache the
557 demangled form for future reference. This is a typical time versus
558 space tradeoff, that was decided in favor of time because it sped up
559 C++ symbol lookups by a factor of about 20. */
561 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
565 /* Determine the type of name being defined. */
567 /* Getting GDB to correctly skip the symbol on an undefined symbol
568 descriptor and not ever dump core is a very dodgy proposition if
569 we do things this way. I say the acorn RISC machine can just
570 fix their compiler. */
571 /* The Acorn RISC machine's compiler can put out locals that don't
572 start with "234=" or "(3,4)=", so assume anything other than the
573 deftypes we know how to handle is a local. */
574 if (!strchr ("cfFGpPrStTvVXCR", *p
))
576 if (isdigit (*p
) || *p
== '(' || *p
== '-')
585 /* c is a special case, not followed by a type-number.
586 SYMBOL:c=iVALUE for an integer constant symbol.
587 SYMBOL:c=rVALUE for a floating constant symbol.
588 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
589 e.g. "b:c=e6,0" for "const b = blob1"
590 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
593 SYMBOL_CLASS (sym
) = LOC_CONST
;
594 SYMBOL_TYPE (sym
) = error_type (&p
);
595 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
596 add_symbol_to_list (sym
, &file_symbols
);
607 /* FIXME-if-picky-about-floating-accuracy: Should be using
608 target arithmetic to get the value. real.c in GCC
609 probably has the necessary code. */
611 /* FIXME: lookup_fundamental_type is a hack. We should be
612 creating a type especially for the type of float constants.
613 Problem is, what type should it be?
615 Also, what should the name of this type be? Should we
616 be using 'S' constants (see stabs.texinfo) instead? */
618 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
621 obstack_alloc (&objfile
-> symbol_obstack
,
622 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
623 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
624 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
625 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
630 /* Defining integer constants this way is kind of silly,
631 since 'e' constants allows the compiler to give not
632 only the value, but the type as well. C has at least
633 int, long, unsigned int, and long long as constant
634 types; other languages probably should have at least
635 unsigned as well as signed constants. */
637 /* We just need one int constant type for all objfiles.
638 It doesn't depend on languages or anything (arguably its
639 name should be a language-specific name for a type of
640 that size, but I'm inclined to say that if the compiler
641 wants a nice name for the type, it can use 'e'). */
642 static struct type
*int_const_type
;
644 /* Yes, this is as long as a *host* int. That is because we
646 if (int_const_type
== NULL
)
648 init_type (TYPE_CODE_INT
,
649 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
651 (struct objfile
*)NULL
);
652 SYMBOL_TYPE (sym
) = int_const_type
;
653 SYMBOL_VALUE (sym
) = atoi (p
);
654 SYMBOL_CLASS (sym
) = LOC_CONST
;
658 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
659 can be represented as integral.
660 e.g. "b:c=e6,0" for "const b = blob1"
661 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
663 SYMBOL_CLASS (sym
) = LOC_CONST
;
664 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
668 SYMBOL_TYPE (sym
) = error_type (&p
);
673 /* If the value is too big to fit in an int (perhaps because
674 it is unsigned), or something like that, we silently get
675 a bogus value. The type and everything else about it is
676 correct. Ideally, we should be using whatever we have
677 available for parsing unsigned and long long values,
679 SYMBOL_VALUE (sym
) = atoi (p
);
684 SYMBOL_CLASS (sym
) = LOC_CONST
;
685 SYMBOL_TYPE (sym
) = error_type (&p
);
688 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
689 add_symbol_to_list (sym
, &file_symbols
);
693 /* The name of a caught exception. */
694 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
695 SYMBOL_CLASS (sym
) = LOC_LABEL
;
696 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
697 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
698 add_symbol_to_list (sym
, &local_symbols
);
702 /* A static function definition. */
703 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
704 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
705 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
706 add_symbol_to_list (sym
, &file_symbols
);
707 /* fall into process_function_types. */
709 process_function_types
:
710 /* Function result types are described as the result type in stabs.
711 We need to convert this to the function-returning-type-X type
712 in GDB. E.g. "int" is converted to "function returning int". */
713 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
716 /* This code doesn't work -- it needs to realloc and can't. */
717 /* Attempt to set up to record a function prototype... */
718 struct type
*new = alloc_type (objfile
);
720 /* Generate a template for the type of this function. The
721 types of the arguments will be added as we read the symbol
723 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
724 SYMBOL_TYPE(sym
) = new;
725 TYPE_OBJFILE (new) = objfile
;
726 in_function_type
= new;
728 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
731 /* fall into process_prototype_types */
733 process_prototype_types
:
734 /* Sun acc puts declared types of arguments here. We don't care
735 about their actual types (FIXME -- we should remember the whole
736 function prototype), but the list may define some new types
737 that we have to remember, so we must scan it now. */
740 read_type (&p
, objfile
);
745 /* A global function definition. */
746 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
747 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
748 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
749 add_symbol_to_list (sym
, &global_symbols
);
750 goto process_function_types
;
753 /* For a class G (global) symbol, it appears that the
754 value is not correct. It is necessary to search for the
755 corresponding linker definition to find the value.
756 These definitions appear at the end of the namelist. */
757 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
758 i
= hashname (SYMBOL_NAME (sym
));
759 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
760 global_sym_chain
[i
] = sym
;
761 SYMBOL_CLASS (sym
) = LOC_STATIC
;
762 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
763 add_symbol_to_list (sym
, &global_symbols
);
766 /* This case is faked by a conditional above,
767 when there is no code letter in the dbx data.
768 Dbx data never actually contains 'l'. */
770 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
771 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
772 SYMBOL_VALUE (sym
) = valu
;
773 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
774 add_symbol_to_list (sym
, &local_symbols
);
779 /* pF is a two-letter code that means a function parameter in Fortran.
780 The type-number specifies the type of the return value.
781 Translate it into a pointer-to-function type. */
785 = lookup_pointer_type
786 (lookup_function_type (read_type (&p
, objfile
)));
789 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
791 /* Normally this is a parameter, a LOC_ARG. On the i960, it
792 can also be a LOC_LOCAL_ARG depending on symbol type. */
793 #ifndef DBX_PARM_SYMBOL_CLASS
794 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
797 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
798 SYMBOL_VALUE (sym
) = valu
;
799 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
801 /* This doesn't work yet. */
802 add_param_to_type (&in_function_type
, sym
);
804 add_symbol_to_list (sym
, &local_symbols
);
806 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
807 /* On little-endian machines, this crud is never necessary, and,
808 if the extra bytes contain garbage, is harmful. */
810 #else /* Big endian. */
811 /* If it's gcc-compiled, if it says `short', believe it. */
812 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
815 #if !BELIEVE_PCC_PROMOTION
817 /* This is the signed type which arguments get promoted to. */
818 static struct type
*pcc_promotion_type
;
819 /* This is the unsigned type which arguments get promoted to. */
820 static struct type
*pcc_unsigned_promotion_type
;
822 /* Call it "int" because this is mainly C lossage. */
823 if (pcc_promotion_type
== NULL
)
825 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
828 if (pcc_unsigned_promotion_type
== NULL
)
829 pcc_unsigned_promotion_type
=
830 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
831 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
833 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
834 /* This macro is defined on machines (e.g. sparc) where
835 we should believe the type of a PCC 'short' argument,
836 but shouldn't believe the address (the address is
837 the address of the corresponding int).
839 My guess is that this correction, as opposed to changing
840 the parameter to an 'int' (as done below, for PCC
841 on most machines), is the right thing to do
842 on all machines, but I don't want to risk breaking
843 something that already works. On most PCC machines,
844 the sparc problem doesn't come up because the calling
845 function has to zero the top bytes (not knowing whether
846 the called function wants an int or a short), so there
847 is little practical difference between an int and a short
848 (except perhaps what happens when the GDB user types
849 "print short_arg = 0x10000;").
851 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
852 actually produces the correct address (we don't need to fix it
853 up). I made this code adapt so that it will offset the symbol
854 if it was pointing at an int-aligned location and not
855 otherwise. This way you can use the same gdb for 4.0.x and
858 If the parameter is shorter than an int, and is integral
859 (e.g. char, short, or unsigned equivalent), and is claimed to
860 be passed on an integer boundary, don't believe it! Offset the
861 parameter's address to the tail-end of that integer. */
863 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
864 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
865 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
867 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
868 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
872 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
874 /* If PCC says a parameter is a short or a char,
875 it is really an int. */
876 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
877 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
880 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
881 ? pcc_unsigned_promotion_type
882 : pcc_promotion_type
;
886 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
888 #endif /* !BELIEVE_PCC_PROMOTION. */
889 #endif /* Big endian. */
892 /* acc seems to use P to delare the prototypes of functions that
893 are referenced by this file. gdb is not prepared to deal
894 with this extra information. FIXME, it ought to. */
897 read_type (&p
, objfile
);
898 goto process_prototype_types
;
903 /* Parameter which is in a register. */
904 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
905 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
906 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
907 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
909 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
910 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
912 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
913 add_symbol_to_list (sym
, &local_symbols
);
917 /* Register variable (either global or local). */
918 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
919 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
920 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
921 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
923 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
924 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
926 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
929 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
930 name to represent an argument passed in a register.
931 GCC uses 'P' for the same case. So if we find such a symbol pair
932 we combine it into one 'P' symbol.
933 Note that this code illegally combines
934 main(argc) int argc; { register int argc = 1; }
935 but this case is considered pathological and causes a warning
936 from a decent compiler. */
938 && local_symbols
->nsyms
> 0)
940 struct symbol
*prev_sym
;
941 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
942 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
943 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
945 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
946 /* Use the type from the LOC_REGISTER; that is the type
947 that is actually in that register. */
948 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
949 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
954 add_symbol_to_list (sym
, &local_symbols
);
957 add_symbol_to_list (sym
, &file_symbols
);
961 /* Static symbol at top level of file */
962 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
963 SYMBOL_CLASS (sym
) = LOC_STATIC
;
964 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
965 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
966 add_symbol_to_list (sym
, &file_symbols
);
970 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
972 /* For a nameless type, we don't want a create a symbol, thus we
973 did not use `sym'. Return without further processing. */
974 if (nameless
) return NULL
;
976 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
977 SYMBOL_VALUE (sym
) = valu
;
978 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
979 /* C++ vagaries: we may have a type which is derived from
980 a base type which did not have its name defined when the
981 derived class was output. We fill in the derived class's
982 base part member's name here in that case. */
983 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
984 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
985 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
986 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
989 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
990 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
991 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
992 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
995 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
997 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
998 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1000 /* If we are giving a name to a type such as "pointer to
1001 foo" or "function returning foo", we better not set
1002 the TYPE_NAME. If the program contains "typedef char
1003 *caddr_t;", we don't want all variables of type char
1004 * to print as caddr_t. This is not just a
1005 consequence of GDB's type management; PCC and GCC (at
1006 least through version 2.4) both output variables of
1007 either type char * or caddr_t with the type number
1008 defined in the 't' symbol for caddr_t. If a future
1009 compiler cleans this up it GDB is not ready for it
1010 yet, but if it becomes ready we somehow need to
1011 disable this check (without breaking the PCC/GCC2.4
1016 Fortunately, this check seems not to be necessary
1017 for anything except pointers or functions. */
1020 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1023 add_symbol_to_list (sym
, &file_symbols
);
1027 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1028 by 't' which means we are typedef'ing it as well. */
1029 synonym
= *p
== 't';
1034 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1035 strlen (SYMBOL_NAME (sym
)),
1036 &objfile
-> symbol_obstack
);
1038 /* The semantics of C++ state that "struct foo { ... }" also defines
1039 a typedef for "foo". Unfortunately, cfront never makes the typedef
1040 when translating C++ into C. We make the typedef here so that
1041 "ptype foo" works as expected for cfront translated code. */
1042 else if (current_subfile
->language
== language_cplus
)
1045 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1046 strlen (SYMBOL_NAME (sym
)),
1047 &objfile
-> symbol_obstack
);
1050 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1052 /* For a nameless type, we don't want a create a symbol, thus we
1053 did not use `sym'. Return without further processing. */
1054 if (nameless
) return NULL
;
1056 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1057 SYMBOL_VALUE (sym
) = valu
;
1058 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1059 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1060 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1061 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1062 add_symbol_to_list (sym
, &file_symbols
);
1066 /* Clone the sym and then modify it. */
1067 register struct symbol
*typedef_sym
= (struct symbol
*)
1068 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1069 *typedef_sym
= *sym
;
1070 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1071 SYMBOL_VALUE (typedef_sym
) = valu
;
1072 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1073 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1074 TYPE_NAME (SYMBOL_TYPE (sym
))
1075 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1076 add_symbol_to_list (typedef_sym
, &file_symbols
);
1081 /* Static symbol of local scope */
1082 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1083 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1084 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1085 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1086 add_symbol_to_list (sym
, &local_symbols
);
1090 /* Reference parameter */
1091 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1092 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1093 SYMBOL_VALUE (sym
) = valu
;
1094 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1095 add_symbol_to_list (sym
, &local_symbols
);
1099 /* This is used by Sun FORTRAN for "function result value".
1100 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1101 that Pascal uses it too, but when I tried it Pascal used
1102 "x:3" (local symbol) instead. */
1103 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1104 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1105 SYMBOL_VALUE (sym
) = valu
;
1106 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1107 add_symbol_to_list (sym
, &local_symbols
);
1111 SYMBOL_TYPE (sym
) = error_type (&p
);
1112 SYMBOL_CLASS (sym
) = LOC_CONST
;
1113 SYMBOL_VALUE (sym
) = 0;
1114 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1115 add_symbol_to_list (sym
, &file_symbols
);
1119 /* When passing structures to a function, some systems sometimes pass
1120 the address in a register, not the structure itself.
1122 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1123 to LOC_REGPARM_ADDR for structures and unions. */
1125 #if !defined (REG_STRUCT_HAS_ADDR)
1126 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
1129 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1130 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1131 && ( (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1132 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1133 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1139 /* Skip rest of this symbol and return an error type.
1141 General notes on error recovery: error_type always skips to the
1142 end of the symbol (modulo cretinous dbx symbol name continuation).
1143 Thus code like this:
1145 if (*(*pp)++ != ';')
1146 return error_type (pp);
1148 is wrong because if *pp starts out pointing at '\0' (typically as the
1149 result of an earlier error), it will be incremented to point to the
1150 start of the next symbol, which might produce strange results, at least
1151 if you run off the end of the string table. Instead use
1154 return error_type (pp);
1160 foo = error_type (pp);
1164 And in case it isn't obvious, the point of all this hair is so the compiler
1165 can define new types and new syntaxes, and old versions of the
1166 debugger will be able to read the new symbol tables. */
1168 static struct type
*
1172 complain (&error_type_complaint
);
1175 /* Skip to end of symbol. */
1176 while (**pp
!= '\0')
1181 /* Check for and handle cretinous dbx symbol name continuation! */
1182 if ((*pp
)[-1] == '\\')
1184 *pp
= next_symbol_text ();
1191 return (builtin_type_error
);
1195 /* Read type information or a type definition; return the type. Even
1196 though this routine accepts either type information or a type
1197 definition, the distinction is relevant--some parts of stabsread.c
1198 assume that type information starts with a digit, '-', or '(' in
1199 deciding whether to call read_type. */
1202 read_type (pp
, objfile
)
1204 struct objfile
*objfile
;
1206 register struct type
*type
= 0;
1210 char type_descriptor
;
1212 /* Size in bits of type if specified by a type attribute, or -1 if
1213 there is no size attribute. */
1216 /* Read type number if present. The type number may be omitted.
1217 for instance in a two-dimensional array declared with type
1218 "ar1;1;10;ar1;1;10;4". */
1219 if ((**pp
>= '0' && **pp
<= '9')
1223 if (read_type_number (pp
, typenums
) != 0)
1224 return error_type (pp
);
1226 /* Type is not being defined here. Either it already exists,
1227 or this is a forward reference to it. dbx_alloc_type handles
1230 return dbx_alloc_type (typenums
, objfile
);
1232 /* Type is being defined here. */
1239 /* It might be a type attribute or a member type. */
1240 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1245 /* Type attributes. */
1248 /* Skip to the semicolon. */
1249 while (*p
!= ';' && *p
!= '\0')
1253 return error_type (pp
);
1255 /* Skip the semicolon. */
1261 type_size
= atoi (attr
+ 1);
1266 /* Ignore unrecognized type attributes, so future compilers
1267 can invent new ones. */
1272 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
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. */
1300 /* Set the type code according to the following letter. */
1304 code
= TYPE_CODE_STRUCT
;
1307 code
= TYPE_CODE_UNION
;
1310 code
= TYPE_CODE_ENUM
;
1313 return error_type (pp
);
1316 to
= type_name
= (char *)
1317 obstack_alloc (&objfile
-> type_obstack
,
1318 (((char *) strchr (*pp
, ':') - (*pp
)) + 1));
1320 /* Copy the name. */
1322 while ((*to
++ = *from
++) != ':')
1326 /* Set the pointer ahead of the name which we just read. */
1330 /* Now check to see whether the type has already been declared. */
1331 /* This is necessary at least in the case where the
1332 program says something like
1334 The compiler puts out a cross-reference; we better find
1335 set the length of the structure correctly so we can
1336 set the length of the array. */
1337 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1338 for (i
= 0; i
< ppt
->nsyms
; i
++)
1340 struct symbol
*sym
= ppt
->symbol
[i
];
1342 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1343 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1344 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1345 && STREQ (SYMBOL_NAME (sym
), type_name
))
1347 obstack_free (&objfile
-> type_obstack
, type_name
);
1348 type
= SYMBOL_TYPE (sym
);
1353 /* Didn't find the type to which this refers, so we must
1354 be dealing with a forward reference. Allocate a type
1355 structure for it, and keep track of it so we can
1356 fill in the rest of the fields when we get the full
1358 type
= dbx_alloc_type (typenums
, objfile
);
1359 TYPE_CODE (type
) = code
;
1360 TYPE_TAG_NAME (type
) = type_name
;
1361 INIT_CPLUS_SPECIFIC(type
);
1362 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1364 add_undefined_type (type
);
1368 case '-': /* RS/6000 built-in type */
1382 if (read_type_number (pp
, xtypenums
) != 0)
1383 return error_type (pp
);
1385 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1386 /* It's being defined as itself. That means it is "void". */
1387 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1390 struct type
*xtype
= *dbx_lookup_type (xtypenums
);
1392 /* This can happen if we had '-' followed by a garbage character,
1395 return error_type (pp
);
1397 /* The type is being defined to another type. So we copy the type.
1398 This loses if we copy a C++ class and so we lose track of how
1399 the names are mangled (but g++ doesn't output stabs like this
1402 type
= alloc_type (objfile
);
1403 memcpy (type
, xtype
, sizeof (struct type
));
1405 /* The idea behind clearing the names is that the only purpose
1406 for defining a type to another type is so that the name of
1407 one can be different. So we probably don't need to worry much
1408 about the case where the compiler doesn't give a name to the
1410 TYPE_NAME (type
) = NULL
;
1411 TYPE_TAG_NAME (type
) = NULL
;
1413 if (typenums
[0] != -1)
1414 *dbx_lookup_type (typenums
) = type
;
1417 /* In the following types, we must be sure to overwrite any existing
1418 type that the typenums refer to, rather than allocating a new one
1419 and making the typenums point to the new one. This is because there
1420 may already be pointers to the existing type (if it had been
1421 forward-referenced), and we must change it to a pointer, function,
1422 reference, or whatever, *in-place*. */
1425 type1
= read_type (pp
, objfile
);
1426 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1429 case '&': /* Reference to another type */
1430 type1
= read_type (pp
, objfile
);
1431 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1434 case 'f': /* Function returning another type */
1435 type1
= read_type (pp
, objfile
);
1436 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1439 case 'k': /* Const qualifier on some type (Sun) */
1440 type
= read_type (pp
, objfile
);
1441 /* FIXME! For now, we ignore const and volatile qualifiers. */
1444 case 'B': /* Volatile qual on some type (Sun) */
1445 type
= read_type (pp
, objfile
);
1446 /* FIXME! For now, we ignore const and volatile qualifiers. */
1449 /* FIXME -- we should be doing smash_to_XXX types here. */
1450 case '@': /* Member (class & variable) type */
1452 struct type
*domain
= read_type (pp
, objfile
);
1453 struct type
*memtype
;
1456 /* Invalid member type data format. */
1457 return error_type (pp
);
1460 memtype
= read_type (pp
, objfile
);
1461 type
= dbx_alloc_type (typenums
, objfile
);
1462 smash_to_member_type (type
, domain
, memtype
);
1466 case '#': /* Method (class & fn) type */
1467 if ((*pp
)[0] == '#')
1469 /* We'll get the parameter types from the name. */
1470 struct type
*return_type
;
1473 return_type
= read_type (pp
, objfile
);
1474 if (*(*pp
)++ != ';')
1475 complain (&invalid_member_complaint
, symnum
);
1476 type
= allocate_stub_method (return_type
);
1477 if (typenums
[0] != -1)
1478 *dbx_lookup_type (typenums
) = type
;
1482 struct type
*domain
= read_type (pp
, objfile
);
1483 struct type
*return_type
;
1487 /* Invalid member type data format. */
1488 return error_type (pp
);
1492 return_type
= read_type (pp
, objfile
);
1493 args
= read_args (pp
, ';', objfile
);
1494 type
= dbx_alloc_type (typenums
, objfile
);
1495 smash_to_method_type (type
, domain
, return_type
, args
);
1499 case 'r': /* Range type */
1500 type
= read_range_type (pp
, typenums
, objfile
);
1501 if (typenums
[0] != -1)
1502 *dbx_lookup_type (typenums
) = type
;
1505 case 'b': /* Sun ACC builtin int type */
1506 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1507 if (typenums
[0] != -1)
1508 *dbx_lookup_type (typenums
) = type
;
1511 case 'R': /* Sun ACC builtin float type */
1512 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1513 if (typenums
[0] != -1)
1514 *dbx_lookup_type (typenums
) = type
;
1517 case 'e': /* Enumeration type */
1518 type
= dbx_alloc_type (typenums
, objfile
);
1519 type
= read_enum_type (pp
, type
, objfile
);
1520 if (typenums
[0] != -1)
1521 *dbx_lookup_type (typenums
) = type
;
1524 case 's': /* Struct type */
1525 case 'u': /* Union type */
1526 type
= dbx_alloc_type (typenums
, objfile
);
1527 if (!TYPE_NAME (type
))
1529 TYPE_NAME (type
) = type_synonym_name
;
1531 type_synonym_name
= NULL
;
1532 switch (type_descriptor
)
1535 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1538 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1541 type
= read_struct_type (pp
, type
, objfile
);
1544 case 'a': /* Array type */
1546 return error_type (pp
);
1549 type
= dbx_alloc_type (typenums
, objfile
);
1550 type
= read_array_type (pp
, type
, objfile
);
1554 --*pp
; /* Go back to the symbol in error */
1555 /* Particularly important if it was \0! */
1556 return error_type (pp
);
1561 warning ("GDB internal error, type is NULL in stabsread.c\n");
1562 return error_type (pp
);
1565 /* Size specified in a type attribute overrides any other size. */
1566 if (type_size
!= -1)
1567 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1572 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1573 Return the proper type node for a given builtin type number. */
1575 static struct type
*
1576 rs6000_builtin_type (typenum
)
1579 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1580 #define NUMBER_RECOGNIZED 30
1581 /* This includes an empty slot for type number -0. */
1582 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1583 struct type
*rettype
= NULL
;
1585 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1587 complain (&rs6000_builtin_complaint
, typenum
);
1588 return builtin_type_error
;
1590 if (negative_types
[-typenum
] != NULL
)
1591 return negative_types
[-typenum
];
1593 #if TARGET_CHAR_BIT != 8
1594 #error This code wrong for TARGET_CHAR_BIT not 8
1595 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1596 that if that ever becomes not true, the correct fix will be to
1597 make the size in the struct type to be in bits, not in units of
1604 /* The size of this and all the other types are fixed, defined
1605 by the debugging format. If there is a type called "int" which
1606 is other than 32 bits, then it should use a new negative type
1607 number (or avoid negative type numbers for that case).
1608 See stabs.texinfo. */
1609 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1612 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1615 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1618 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1621 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1622 "unsigned char", NULL
);
1625 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1628 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1629 "unsigned short", NULL
);
1632 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1633 "unsigned int", NULL
);
1636 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1639 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1640 "unsigned long", NULL
);
1643 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1646 /* IEEE single precision (32 bit). */
1647 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1650 /* IEEE double precision (64 bit). */
1651 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1654 /* This is an IEEE double on the RS/6000, and different machines with
1655 different sizes for "long double" should use different negative
1656 type numbers. See stabs.texinfo. */
1657 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1660 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1663 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1666 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1669 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1672 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1675 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1679 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1683 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1687 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1691 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1695 /* Complex type consisting of two IEEE single precision values. */
1696 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1699 /* Complex type consisting of two IEEE double precision values. */
1700 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1703 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1706 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1709 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1712 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1715 negative_types
[-typenum
] = rettype
;
1719 /* This page contains subroutines of read_type. */
1721 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1722 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1723 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1724 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1726 /* Read member function stabs info for C++ classes. The form of each member
1729 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1731 An example with two member functions is:
1733 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1735 For the case of overloaded operators, the format is op$::*.funcs, where
1736 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1737 name (such as `+=') and `.' marks the end of the operator name.
1739 Returns 1 for success, 0 for failure. */
1742 read_member_functions (fip
, pp
, type
, objfile
)
1743 struct field_info
*fip
;
1746 struct objfile
*objfile
;
1750 /* Total number of member functions defined in this class. If the class
1751 defines two `f' functions, and one `g' function, then this will have
1753 int total_length
= 0;
1757 struct next_fnfield
*next
;
1758 struct fn_field fn_field
;
1760 struct type
*look_ahead_type
;
1761 struct next_fnfieldlist
*new_fnlist
;
1762 struct next_fnfield
*new_sublist
;
1766 /* Process each list until we find something that is not a member function
1767 or find the end of the functions. */
1771 /* We should be positioned at the start of the function name.
1772 Scan forward to find the first ':' and if it is not the
1773 first of a "::" delimiter, then this is not a member function. */
1785 look_ahead_type
= NULL
;
1788 new_fnlist
= (struct next_fnfieldlist
*)
1789 xmalloc (sizeof (struct next_fnfieldlist
));
1790 make_cleanup (free
, new_fnlist
);
1791 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1793 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1795 /* This is a completely wierd case. In order to stuff in the
1796 names that might contain colons (the usual name delimiter),
1797 Mike Tiemann defined a different name format which is
1798 signalled if the identifier is "op$". In that case, the
1799 format is "op$::XXXX." where XXXX is the name. This is
1800 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1801 /* This lets the user type "break operator+".
1802 We could just put in "+" as the name, but that wouldn't
1804 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1805 char *o
= opname
+ 3;
1807 /* Skip past '::'. */
1810 STABS_CONTINUE (pp
);
1816 main_fn_name
= savestring (opname
, o
- opname
);
1822 main_fn_name
= savestring (*pp
, p
- *pp
);
1823 /* Skip past '::'. */
1826 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1831 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1832 make_cleanup (free
, new_sublist
);
1833 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1835 /* Check for and handle cretinous dbx symbol name continuation! */
1836 if (look_ahead_type
== NULL
)
1839 STABS_CONTINUE (pp
);
1841 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1844 /* Invalid symtab info for member function. */
1850 /* g++ version 1 kludge */
1851 new_sublist
-> fn_field
.type
= look_ahead_type
;
1852 look_ahead_type
= NULL
;
1862 /* If this is just a stub, then we don't have the real name here. */
1864 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1866 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1867 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1868 new_sublist
-> fn_field
.is_stub
= 1;
1870 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1873 /* Set this member function's visibility fields. */
1876 case VISIBILITY_PRIVATE
:
1877 new_sublist
-> fn_field
.is_private
= 1;
1879 case VISIBILITY_PROTECTED
:
1880 new_sublist
-> fn_field
.is_protected
= 1;
1884 STABS_CONTINUE (pp
);
1887 case 'A': /* Normal functions. */
1888 new_sublist
-> fn_field
.is_const
= 0;
1889 new_sublist
-> fn_field
.is_volatile
= 0;
1892 case 'B': /* `const' member functions. */
1893 new_sublist
-> fn_field
.is_const
= 1;
1894 new_sublist
-> fn_field
.is_volatile
= 0;
1897 case 'C': /* `volatile' member function. */
1898 new_sublist
-> fn_field
.is_const
= 0;
1899 new_sublist
-> fn_field
.is_volatile
= 1;
1902 case 'D': /* `const volatile' member function. */
1903 new_sublist
-> fn_field
.is_const
= 1;
1904 new_sublist
-> fn_field
.is_volatile
= 1;
1907 case '*': /* File compiled with g++ version 1 -- no info */
1912 complain (&const_vol_complaint
, **pp
);
1921 /* virtual member function, followed by index.
1922 The sign bit is set to distinguish pointers-to-methods
1923 from virtual function indicies. Since the array is
1924 in words, the quantity must be shifted left by 1
1925 on 16 bit machine, and by 2 on 32 bit machine, forcing
1926 the sign bit out, and usable as a valid index into
1927 the array. Remove the sign bit here. */
1928 new_sublist
-> fn_field
.voffset
=
1929 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1933 STABS_CONTINUE (pp
);
1934 if (**pp
== ';' || **pp
== '\0')
1936 /* Must be g++ version 1. */
1937 new_sublist
-> fn_field
.fcontext
= 0;
1941 /* Figure out from whence this virtual function came.
1942 It may belong to virtual function table of
1943 one of its baseclasses. */
1944 look_ahead_type
= read_type (pp
, objfile
);
1947 /* g++ version 1 overloaded methods. */
1951 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
1960 look_ahead_type
= NULL
;
1966 /* static member function. */
1967 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
1968 if (strncmp (new_sublist
-> fn_field
.physname
,
1969 main_fn_name
, strlen (main_fn_name
)))
1971 new_sublist
-> fn_field
.is_stub
= 1;
1977 complain (&member_fn_complaint
, (*pp
)[-1]);
1978 /* Fall through into normal member function. */
1981 /* normal member function. */
1982 new_sublist
-> fn_field
.voffset
= 0;
1983 new_sublist
-> fn_field
.fcontext
= 0;
1987 new_sublist
-> next
= sublist
;
1988 sublist
= new_sublist
;
1990 STABS_CONTINUE (pp
);
1992 while (**pp
!= ';' && **pp
!= '\0');
1996 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
1997 obstack_alloc (&objfile
-> type_obstack
,
1998 sizeof (struct fn_field
) * length
);
1999 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2000 sizeof (struct fn_field
) * length
);
2001 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2003 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2006 new_fnlist
-> fn_fieldlist
.length
= length
;
2007 new_fnlist
-> next
= fip
-> fnlist
;
2008 fip
-> fnlist
= new_fnlist
;
2010 total_length
+= length
;
2011 STABS_CONTINUE (pp
);
2016 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2017 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2018 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2019 memset (TYPE_FN_FIELDLISTS (type
), 0,
2020 sizeof (struct fn_fieldlist
) * nfn_fields
);
2021 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2022 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2028 /* Special GNU C++ name.
2030 Returns 1 for success, 0 for failure. "failure" means that we can't
2031 keep parsing and it's time for error_type(). */
2034 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2035 struct field_info
*fip
;
2038 struct objfile
*objfile
;
2043 struct type
*context
;
2053 /* At this point, *pp points to something like "22:23=*22...",
2054 where the type number before the ':' is the "context" and
2055 everything after is a regular type definition. Lookup the
2056 type, find it's name, and construct the field name. */
2058 context
= read_type (pp
, objfile
);
2062 case 'f': /* $vf -- a virtual function table pointer */
2063 fip
->list
->field
.name
=
2064 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2067 case 'b': /* $vb -- a virtual bsomethingorother */
2068 name
= type_name_no_tag (context
);
2071 complain (&invalid_cpp_type_complaint
, symnum
);
2074 fip
->list
->field
.name
=
2075 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2079 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2080 fip
->list
->field
.name
=
2081 obconcat (&objfile
->type_obstack
,
2082 "INVALID_CPLUSPLUS_ABBREV", "", "");
2086 /* At this point, *pp points to the ':'. Skip it and read the
2092 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2095 fip
->list
->field
.type
= read_type (pp
, objfile
);
2097 (*pp
)++; /* Skip the comma. */
2103 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2107 /* This field is unpacked. */
2108 fip
->list
->field
.bitsize
= 0;
2109 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2113 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2114 /* We have no idea what syntax an unrecognized abbrev would have, so
2115 better return 0. If we returned 1, we would need to at least advance
2116 *pp to avoid an infinite loop. */
2123 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2124 struct field_info
*fip
;
2128 struct objfile
*objfile
;
2130 fip
-> list
-> field
.name
=
2131 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2134 /* This means we have a visibility for a field coming. */
2138 fip
-> list
-> visibility
= *(*pp
)++;
2142 /* normal dbx-style format, no explicit visibility */
2143 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2146 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2151 /* Possible future hook for nested types. */
2154 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2160 /* Static class member. */
2161 fip
-> list
-> field
.bitpos
= (long) -1;
2167 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2171 else if (**pp
!= ',')
2173 /* Bad structure-type format. */
2174 complain (&stabs_general_complaint
, "bad structure-type format");
2178 (*pp
)++; /* Skip the comma. */
2182 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2185 complain (&stabs_general_complaint
, "bad structure-type format");
2188 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2191 complain (&stabs_general_complaint
, "bad structure-type format");
2196 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2198 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2199 it is a field which has been optimized out. The correct stab for
2200 this case is to use VISIBILITY_IGNORE, but that is a recent
2201 invention. (2) It is a 0-size array. For example
2202 union { int num; char str[0]; } foo. Printing "<no value>" for
2203 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2204 will continue to work, and a 0-size array as a whole doesn't
2205 have any contents to print.
2207 I suspect this probably could also happen with gcc -gstabs (not
2208 -gstabs+) for static fields, and perhaps other C++ extensions.
2209 Hopefully few people use -gstabs with gdb, since it is intended
2210 for dbx compatibility. */
2212 /* Ignore this field. */
2213 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2217 /* Detect an unpacked field and mark it as such.
2218 dbx gives a bit size for all fields.
2219 Note that forward refs cannot be packed,
2220 and treat enums as if they had the width of ints. */
2222 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2223 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2225 fip
-> list
-> field
.bitsize
= 0;
2227 if ((fip
-> list
-> field
.bitsize
2228 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2229 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2230 && (fip
-> list
-> field
.bitsize
2235 fip
-> list
-> field
.bitpos
% 8 == 0)
2237 fip
-> list
-> field
.bitsize
= 0;
2243 /* Read struct or class data fields. They have the form:
2245 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2247 At the end, we see a semicolon instead of a field.
2249 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2252 The optional VISIBILITY is one of:
2254 '/0' (VISIBILITY_PRIVATE)
2255 '/1' (VISIBILITY_PROTECTED)
2256 '/2' (VISIBILITY_PUBLIC)
2257 '/9' (VISIBILITY_IGNORE)
2259 or nothing, for C style fields with public visibility.
2261 Returns 1 for success, 0 for failure. */
2264 read_struct_fields (fip
, pp
, type
, objfile
)
2265 struct field_info
*fip
;
2268 struct objfile
*objfile
;
2271 struct nextfield
*new;
2273 /* We better set p right now, in case there are no fields at all... */
2277 /* Read each data member type until we find the terminating ';' at the end of
2278 the data member list, or break for some other reason such as finding the
2279 start of the member function list. */
2283 STABS_CONTINUE (pp
);
2284 /* Get space to record the next field's data. */
2285 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2286 make_cleanup (free
, new);
2287 memset (new, 0, sizeof (struct nextfield
));
2288 new -> next
= fip
-> list
;
2291 /* Get the field name. */
2294 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2295 unless the CPLUS_MARKER is followed by an underscore, in
2296 which case it is just the name of an anonymous type, which we
2297 should handle like any other type name. We accept either '$'
2298 or '.', because a field name can never contain one of these
2299 characters except as a CPLUS_MARKER (we probably should be
2300 doing that in most parts of GDB). */
2302 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2304 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2309 /* Look for the ':' that separates the field name from the field
2310 values. Data members are delimited by a single ':', while member
2311 functions are delimited by a pair of ':'s. When we hit the member
2312 functions (if any), terminate scan loop and return. */
2314 while (*p
!= ':' && *p
!= '\0')
2321 /* Check to see if we have hit the member functions yet. */
2326 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2330 /* chill the list of fields: the last entry (at the head) is a
2331 partially constructed entry which we now scrub. */
2332 fip
-> list
= fip
-> list
-> next
;
2337 /* The stabs for C++ derived classes contain baseclass information which
2338 is marked by a '!' character after the total size. This function is
2339 called when we encounter the baseclass marker, and slurps up all the
2340 baseclass information.
2342 Immediately following the '!' marker is the number of base classes that
2343 the class is derived from, followed by information for each base class.
2344 For each base class, there are two visibility specifiers, a bit offset
2345 to the base class information within the derived class, a reference to
2346 the type for the base class, and a terminating semicolon.
2348 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2350 Baseclass information marker __________________|| | | | | | |
2351 Number of baseclasses __________________________| | | | | | |
2352 Visibility specifiers (2) ________________________| | | | | |
2353 Offset in bits from start of class _________________| | | | |
2354 Type number for base class ___________________________| | | |
2355 Visibility specifiers (2) _______________________________| | |
2356 Offset in bits from start of class ________________________| |
2357 Type number of base class ____________________________________|
2359 Return 1 for success, 0 for (error-type-inducing) failure. */
2362 read_baseclasses (fip
, pp
, type
, objfile
)
2363 struct field_info
*fip
;
2366 struct objfile
*objfile
;
2369 struct nextfield
*new;
2377 /* Skip the '!' baseclass information marker. */
2381 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2384 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2390 /* Some stupid compilers have trouble with the following, so break
2391 it up into simpler expressions. */
2392 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2393 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2396 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2399 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2400 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2404 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2406 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2408 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2409 make_cleanup (free
, new);
2410 memset (new, 0, sizeof (struct nextfield
));
2411 new -> next
= fip
-> list
;
2413 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2415 STABS_CONTINUE (pp
);
2419 /* Nothing to do. */
2422 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2425 /* Unknown character. Complain and treat it as non-virtual. */
2427 static struct complaint msg
= {
2428 "Unknown virtual character `%c' for baseclass", 0, 0};
2429 complain (&msg
, **pp
);
2434 new -> visibility
= *(*pp
)++;
2435 switch (new -> visibility
)
2437 case VISIBILITY_PRIVATE
:
2438 case VISIBILITY_PROTECTED
:
2439 case VISIBILITY_PUBLIC
:
2442 /* Bad visibility format. Complain and treat it as
2445 static struct complaint msg
= {
2446 "Unknown visibility `%c' for baseclass", 0, 0};
2447 complain (&msg
, new -> visibility
);
2448 new -> visibility
= VISIBILITY_PUBLIC
;
2455 /* The remaining value is the bit offset of the portion of the object
2456 corresponding to this baseclass. Always zero in the absence of
2457 multiple inheritance. */
2459 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2464 /* The last piece of baseclass information is the type of the
2465 base class. Read it, and remember it's type name as this
2468 new -> field
.type
= read_type (pp
, objfile
);
2469 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2471 /* skip trailing ';' and bump count of number of fields seen */
2480 /* The tail end of stabs for C++ classes that contain a virtual function
2481 pointer contains a tilde, a %, and a type number.
2482 The type number refers to the base class (possibly this class itself) which
2483 contains the vtable pointer for the current class.
2485 This function is called when we have parsed all the method declarations,
2486 so we can look for the vptr base class info. */
2489 read_tilde_fields (fip
, pp
, type
, objfile
)
2490 struct field_info
*fip
;
2493 struct objfile
*objfile
;
2497 STABS_CONTINUE (pp
);
2499 /* If we are positioned at a ';', then skip it. */
2509 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2511 /* Obsolete flags that used to indicate the presence
2512 of constructors and/or destructors. */
2516 /* Read either a '%' or the final ';'. */
2517 if (*(*pp
)++ == '%')
2519 /* The next number is the type number of the base class
2520 (possibly our own class) which supplies the vtable for
2521 this class. Parse it out, and search that class to find
2522 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2523 and TYPE_VPTR_FIELDNO. */
2528 t
= read_type (pp
, objfile
);
2530 while (*p
!= '\0' && *p
!= ';')
2536 /* Premature end of symbol. */
2540 TYPE_VPTR_BASETYPE (type
) = t
;
2541 if (type
== t
) /* Our own class provides vtbl ptr */
2543 for (i
= TYPE_NFIELDS (t
) - 1;
2544 i
>= TYPE_N_BASECLASSES (t
);
2547 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2548 sizeof (vptr_name
) - 1))
2550 TYPE_VPTR_FIELDNO (type
) = i
;
2554 /* Virtual function table field not found. */
2555 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2560 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2571 attach_fn_fields_to_type (fip
, type
)
2572 struct field_info
*fip
;
2573 register struct type
*type
;
2577 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2579 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2581 /* @@ Memory leak on objfile -> type_obstack? */
2584 TYPE_NFN_FIELDS_TOTAL (type
) +=
2585 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2588 for (n
= TYPE_NFN_FIELDS (type
);
2589 fip
-> fnlist
!= NULL
;
2590 fip
-> fnlist
= fip
-> fnlist
-> next
)
2592 --n
; /* Circumvent Sun3 compiler bug */
2593 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2598 /* Create the vector of fields, and record how big it is.
2599 We need this info to record proper virtual function table information
2600 for this class's virtual functions. */
2603 attach_fields_to_type (fip
, type
, objfile
)
2604 struct field_info
*fip
;
2605 register struct type
*type
;
2606 struct objfile
*objfile
;
2608 register int nfields
= 0;
2609 register int non_public_fields
= 0;
2610 register struct nextfield
*scan
;
2612 /* Count up the number of fields that we have, as well as taking note of
2613 whether or not there are any non-public fields, which requires us to
2614 allocate and build the private_field_bits and protected_field_bits
2617 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2620 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2622 non_public_fields
++;
2626 /* Now we know how many fields there are, and whether or not there are any
2627 non-public fields. Record the field count, allocate space for the
2628 array of fields, and create blank visibility bitfields if necessary. */
2630 TYPE_NFIELDS (type
) = nfields
;
2631 TYPE_FIELDS (type
) = (struct field
*)
2632 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2633 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2635 if (non_public_fields
)
2637 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2639 TYPE_FIELD_PRIVATE_BITS (type
) =
2640 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2641 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2643 TYPE_FIELD_PROTECTED_BITS (type
) =
2644 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2645 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2647 TYPE_FIELD_IGNORE_BITS (type
) =
2648 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2649 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2652 /* Copy the saved-up fields into the field vector. Start from the head
2653 of the list, adding to the tail of the field array, so that they end
2654 up in the same order in the array in which they were added to the list. */
2656 while (nfields
-- > 0)
2658 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2659 switch (fip
-> list
-> visibility
)
2661 case VISIBILITY_PRIVATE
:
2662 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2665 case VISIBILITY_PROTECTED
:
2666 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2669 case VISIBILITY_IGNORE
:
2670 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2673 case VISIBILITY_PUBLIC
:
2677 /* Unknown visibility. Complain and treat it as public. */
2679 static struct complaint msg
= {
2680 "Unknown visibility `%c' for field", 0, 0};
2681 complain (&msg
, fip
-> list
-> visibility
);
2685 fip
-> list
= fip
-> list
-> next
;
2690 /* Read the description of a structure (or union type) and return an object
2691 describing the type.
2693 PP points to a character pointer that points to the next unconsumed token
2694 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2695 *PP will point to "4a:1,0,32;;".
2697 TYPE points to an incomplete type that needs to be filled in.
2699 OBJFILE points to the current objfile from which the stabs information is
2700 being read. (Note that it is redundant in that TYPE also contains a pointer
2701 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2704 static struct type
*
2705 read_struct_type (pp
, type
, objfile
)
2708 struct objfile
*objfile
;
2710 struct cleanup
*back_to
;
2711 struct field_info fi
;
2716 back_to
= make_cleanup (null_cleanup
, 0);
2718 INIT_CPLUS_SPECIFIC (type
);
2719 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2721 /* First comes the total size in bytes. */
2725 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2727 return error_type (pp
);
2730 /* Now read the baseclasses, if any, read the regular C struct or C++
2731 class member fields, attach the fields to the type, read the C++
2732 member functions, attach them to the type, and then read any tilde
2733 field (baseclass specifier for the class holding the main vtable). */
2735 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2736 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2737 || !attach_fields_to_type (&fi
, type
, objfile
)
2738 || !read_member_functions (&fi
, pp
, type
, objfile
)
2739 || !attach_fn_fields_to_type (&fi
, type
)
2740 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2742 do_cleanups (back_to
);
2743 return (error_type (pp
));
2746 do_cleanups (back_to
);
2750 /* Read a definition of an array type,
2751 and create and return a suitable type object.
2752 Also creates a range type which represents the bounds of that
2755 static struct type
*
2756 read_array_type (pp
, type
, objfile
)
2758 register struct type
*type
;
2759 struct objfile
*objfile
;
2761 struct type
*index_type
, *element_type
, *range_type
;
2766 /* Format of an array type:
2767 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2770 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2771 for these, produce a type like float[][]. */
2773 index_type
= read_type (pp
, objfile
);
2775 /* Improper format of array type decl. */
2776 return error_type (pp
);
2779 if (!(**pp
>= '0' && **pp
<= '9'))
2784 lower
= read_huge_number (pp
, ';', &nbits
);
2786 return error_type (pp
);
2788 if (!(**pp
>= '0' && **pp
<= '9'))
2793 upper
= read_huge_number (pp
, ';', &nbits
);
2795 return error_type (pp
);
2797 element_type
= read_type (pp
, objfile
);
2806 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2807 type
= create_array_type (type
, element_type
, range_type
);
2809 /* If we have an array whose element type is not yet known, but whose
2810 bounds *are* known, record it to be adjusted at the end of the file. */
2812 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2814 add_undefined_type (type
);
2821 /* Read a definition of an enumeration type,
2822 and create and return a suitable type object.
2823 Also defines the symbols that represent the values of the type. */
2825 static struct type
*
2826 read_enum_type (pp
, type
, objfile
)
2828 register struct type
*type
;
2829 struct objfile
*objfile
;
2834 register struct symbol
*sym
;
2836 struct pending
**symlist
;
2837 struct pending
*osyms
, *syms
;
2841 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2842 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2843 to do? For now, force all enum values to file scope. */
2844 if (within_function
)
2845 symlist
= &local_symbols
;
2848 symlist
= &file_symbols
;
2850 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2852 /* Read the value-names and their values.
2853 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2854 A semicolon or comma instead of a NAME means the end. */
2855 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2858 STABS_CONTINUE (pp
);
2860 while (*p
!= ':') p
++;
2861 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2863 n
= read_huge_number (pp
, ',', &nbits
);
2865 return error_type (pp
);
2867 sym
= (struct symbol
*)
2868 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2869 memset (sym
, 0, sizeof (struct symbol
));
2870 SYMBOL_NAME (sym
) = name
;
2871 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2872 SYMBOL_CLASS (sym
) = LOC_CONST
;
2873 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2874 SYMBOL_VALUE (sym
) = n
;
2875 add_symbol_to_list (sym
, symlist
);
2880 (*pp
)++; /* Skip the semicolon. */
2882 /* Now fill in the fields of the type-structure. */
2884 TYPE_LENGTH (type
) = sizeof (int);
2885 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2886 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2887 TYPE_NFIELDS (type
) = nsyms
;
2888 TYPE_FIELDS (type
) = (struct field
*)
2889 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2890 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2892 /* Find the symbols for the values and put them into the type.
2893 The symbols can be found in the symlist that we put them on
2894 to cause them to be defined. osyms contains the old value
2895 of that symlist; everything up to there was defined by us. */
2896 /* Note that we preserve the order of the enum constants, so
2897 that in something like "enum {FOO, LAST_THING=FOO}" we print
2898 FOO, not LAST_THING. */
2900 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2905 for (; j
< syms
->nsyms
; j
++,n
++)
2907 struct symbol
*xsym
= syms
->symbol
[j
];
2908 SYMBOL_TYPE (xsym
) = type
;
2909 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2910 TYPE_FIELD_VALUE (type
, n
) = 0;
2911 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2912 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2919 /* This screws up perfectly good C programs with enums. FIXME. */
2920 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2921 if(TYPE_NFIELDS(type
) == 2 &&
2922 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2923 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2924 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2925 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2926 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2932 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2933 typedefs in every file (for int, long, etc):
2935 type = b <signed> <width>; <offset>; <nbits>
2936 signed = u or s. Possible c in addition to u or s (for char?).
2937 offset = offset from high order bit to start bit of type.
2938 width is # bytes in object of this type, nbits is # bits in type.
2940 The width/offset stuff appears to be for small objects stored in
2941 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2944 static struct type
*
2945 read_sun_builtin_type (pp
, typenums
, objfile
)
2948 struct objfile
*objfile
;
2963 return error_type (pp
);
2967 /* For some odd reason, all forms of char put a c here. This is strange
2968 because no other type has this honor. We can safely ignore this because
2969 we actually determine 'char'acterness by the number of bits specified in
2975 /* The first number appears to be the number of bytes occupied
2976 by this type, except that unsigned short is 4 instead of 2.
2977 Since this information is redundant with the third number,
2978 we will ignore it. */
2979 read_huge_number (pp
, ';', &nbits
);
2981 return error_type (pp
);
2983 /* The second number is always 0, so ignore it too. */
2984 read_huge_number (pp
, ';', &nbits
);
2986 return error_type (pp
);
2988 /* The third number is the number of bits for this type. */
2989 type_bits
= read_huge_number (pp
, 0, &nbits
);
2991 return error_type (pp
);
2993 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
2994 type_bits
/ TARGET_CHAR_BIT
,
2995 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
2999 static struct type
*
3000 read_sun_floating_type (pp
, typenums
, objfile
)
3003 struct objfile
*objfile
;
3009 /* The first number has more details about the type, for example
3011 details
= read_huge_number (pp
, ';', &nbits
);
3013 return error_type (pp
);
3015 /* The second number is the number of bytes occupied by this type */
3016 nbytes
= read_huge_number (pp
, ';', &nbits
);
3018 return error_type (pp
);
3020 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3021 || details
== NF_COMPLEX32
)
3022 /* This is a type we can't handle, but we do know the size.
3023 We also will be able to give it a name. */
3024 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3026 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3029 /* Read a number from the string pointed to by *PP.
3030 The value of *PP is advanced over the number.
3031 If END is nonzero, the character that ends the
3032 number must match END, or an error happens;
3033 and that character is skipped if it does match.
3034 If END is zero, *PP is left pointing to that character.
3036 If the number fits in a long, set *BITS to 0 and return the value.
3037 If not, set *BITS to be the number of bits in the number and return 0.
3039 If encounter garbage, set *BITS to -1 and return 0. */
3042 read_huge_number (pp
, end
, bits
)
3062 /* Leading zero means octal. GCC uses this to output values larger
3063 than an int (because that would be hard in decimal). */
3070 upper_limit
= LONG_MAX
/ radix
;
3071 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3073 if (n
<= upper_limit
)
3076 n
+= c
- '0'; /* FIXME this overflows anyway */
3081 /* This depends on large values being output in octal, which is
3088 /* Ignore leading zeroes. */
3092 else if (c
== '2' || c
== '3')
3118 /* Large decimal constants are an error (because it is hard to
3119 count how many bits are in them). */
3125 /* -0x7f is the same as 0x80. So deal with it by adding one to
3126 the number of bits. */
3138 /* It's *BITS which has the interesting information. */
3142 static struct type
*
3143 read_range_type (pp
, typenums
, objfile
)
3146 struct objfile
*objfile
;
3152 struct type
*result_type
;
3153 struct type
*index_type
;
3155 /* First comes a type we are a subrange of.
3156 In C it is usually 0, 1 or the type being defined. */
3157 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3158 not just a type number. */
3159 if (read_type_number (pp
, rangenums
) != 0)
3160 return error_type (pp
);
3161 self_subrange
= (rangenums
[0] == typenums
[0] &&
3162 rangenums
[1] == typenums
[1]);
3164 /* A semicolon should now follow; skip it. */
3168 /* The remaining two operands are usually lower and upper bounds
3169 of the range. But in some special cases they mean something else. */
3170 n2
= read_huge_number (pp
, ';', &n2bits
);
3171 n3
= read_huge_number (pp
, ';', &n3bits
);
3173 if (n2bits
== -1 || n3bits
== -1)
3174 return error_type (pp
);
3176 /* If limits are huge, must be large integral type. */
3177 if (n2bits
!= 0 || n3bits
!= 0)
3179 char got_signed
= 0;
3180 char got_unsigned
= 0;
3181 /* Number of bits in the type. */
3184 /* Range from 0 to <large number> is an unsigned large integral type. */
3185 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3190 /* Range from <large number> to <large number>-1 is a large signed
3191 integral type. Take care of the case where <large number> doesn't
3192 fit in a long but <large number>-1 does. */
3193 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3194 || (n2bits
!= 0 && n3bits
== 0
3195 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3202 if (got_signed
|| got_unsigned
)
3204 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3205 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3209 return error_type (pp
);
3212 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3213 if (self_subrange
&& n2
== 0 && n3
== 0)
3214 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3216 /* If n3 is zero and n2 is not, we want a floating type,
3217 and n2 is the width in bytes.
3219 Fortran programs appear to use this for complex types also,
3220 and they give no way to distinguish between double and single-complex!
3222 GDB does not have complex types.
3224 Just return the complex as a float of that size. It won't work right
3225 for the complex values, but at least it makes the file loadable. */
3227 if (n3
== 0 && n2
> 0)
3229 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3232 /* If the upper bound is -1, it must really be an unsigned int. */
3234 else if (n2
== 0 && n3
== -1)
3236 /* It is unsigned int or unsigned long. */
3237 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3238 compatibility hack. */
3239 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3240 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3243 /* Special case: char is defined (Who knows why) as a subrange of
3244 itself with range 0-127. */
3245 else if (self_subrange
&& n2
== 0 && n3
== 127)
3246 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3248 /* We used to do this only for subrange of self or subrange of int. */
3252 /* n3 actually gives the size. */
3253 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3256 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3258 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3260 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3261 "unsigned long", and we already checked for that,
3262 so don't need to test for it here. */
3264 /* I think this is for Convex "long long". Since I don't know whether
3265 Convex sets self_subrange, I also accept that particular size regardless
3266 of self_subrange. */
3267 else if (n3
== 0 && n2
< 0
3269 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3270 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3271 else if (n2
== -n3
-1)
3274 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3276 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3277 if (n3
== 0x7fffffff)
3278 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3281 /* We have a real range type on our hands. Allocate space and
3282 return a real pointer. */
3284 /* At this point I don't have the faintest idea how to deal with
3285 a self_subrange type; I'm going to assume that this is used
3286 as an idiom, and that all of them are special cases. So . . . */
3288 return error_type (pp
);
3290 index_type
= *dbx_lookup_type (rangenums
);
3291 if (index_type
== NULL
)
3293 /* Does this actually ever happen? Is that why we are worrying
3294 about dealing with it rather than just calling error_type? */
3296 static struct type
*range_type_index
;
3298 complain (&range_type_base_complaint
, rangenums
[1]);
3299 if (range_type_index
== NULL
)
3301 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3302 0, "range type index type", NULL
);
3303 index_type
= range_type_index
;
3306 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3307 return (result_type
);
3310 /* Read in an argument list. This is a list of types, separated by commas
3311 and terminated with END. Return the list of types read in, or (struct type
3312 **)-1 if there is an error. */
3314 static struct type
**
3315 read_args (pp
, end
, objfile
)
3318 struct objfile
*objfile
;
3320 /* FIXME! Remove this arbitrary limit! */
3321 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3327 /* Invalid argument list: no ','. */
3328 return (struct type
**)-1;
3330 STABS_CONTINUE (pp
);
3331 types
[n
++] = read_type (pp
, objfile
);
3333 (*pp
)++; /* get past `end' (the ':' character) */
3337 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3339 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3341 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3342 memset (rval
+ n
, 0, sizeof (struct type
*));
3346 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3348 memcpy (rval
, types
, n
* sizeof (struct type
*));
3352 /* Common block handling. */
3354 /* List of symbols declared since the last BCOMM. This list is a tail
3355 of local_symbols. When ECOMM is seen, the symbols on the list
3356 are noted so their proper addresses can be filled in later,
3357 using the common block base address gotten from the assembler
3360 static struct pending
*common_block
;
3361 static int common_block_i
;
3363 /* Name of the current common block. We get it from the BCOMM instead of the
3364 ECOMM to match IBM documentation (even though IBM puts the name both places
3365 like everyone else). */
3366 static char *common_block_name
;
3368 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3369 to remain after this function returns. */
3372 common_block_start (name
, objfile
)
3374 struct objfile
*objfile
;
3376 if (common_block_name
!= NULL
)
3378 static struct complaint msg
= {
3379 "Invalid symbol data: common block within common block",
3383 common_block
= local_symbols
;
3384 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3385 common_block_name
= obsavestring (name
, strlen (name
),
3386 &objfile
-> symbol_obstack
);
3389 /* Process a N_ECOMM symbol. */
3392 common_block_end (objfile
)
3393 struct objfile
*objfile
;
3395 /* Symbols declared since the BCOMM are to have the common block
3396 start address added in when we know it. common_block and
3397 common_block_i point to the first symbol after the BCOMM in
3398 the local_symbols list; copy the list and hang it off the
3399 symbol for the common block name for later fixup. */
3402 struct pending
*new = 0;
3403 struct pending
*next
;
3406 if (common_block_name
== NULL
)
3408 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3413 sym
= (struct symbol
*)
3414 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3415 memset (sym
, 0, sizeof (struct symbol
));
3416 SYMBOL_NAME (sym
) = common_block_name
;
3417 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3419 /* Now we copy all the symbols which have been defined since the BCOMM. */
3421 /* Copy all the struct pendings before common_block. */
3422 for (next
= local_symbols
;
3423 next
!= NULL
&& next
!= common_block
;
3426 for (j
= 0; j
< next
->nsyms
; j
++)
3427 add_symbol_to_list (next
->symbol
[j
], &new);
3430 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3431 NULL, it means copy all the local symbols (which we already did
3434 if (common_block
!= NULL
)
3435 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3436 add_symbol_to_list (common_block
->symbol
[j
], &new);
3438 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long) new);
3440 /* Should we be putting local_symbols back to what it was?
3443 i
= hashname (SYMBOL_NAME (sym
));
3444 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3445 global_sym_chain
[i
] = sym
;
3446 common_block_name
= NULL
;
3449 /* Add a common block's start address to the offset of each symbol
3450 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3451 the common block name). */
3454 fix_common_block (sym
, valu
)
3458 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3459 for ( ; next
; next
= next
->next
)
3462 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3463 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3469 /* What about types defined as forward references inside of a small lexical
3471 /* Add a type to the list of undefined types to be checked through
3472 once this file has been read in. */
3475 add_undefined_type (type
)
3478 if (undef_types_length
== undef_types_allocated
)
3480 undef_types_allocated
*= 2;
3481 undef_types
= (struct type
**)
3482 xrealloc ((char *) undef_types
,
3483 undef_types_allocated
* sizeof (struct type
*));
3485 undef_types
[undef_types_length
++] = type
;
3488 /* Go through each undefined type, see if it's still undefined, and fix it
3489 up if possible. We have two kinds of undefined types:
3491 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3492 Fix: update array length using the element bounds
3493 and the target type's length.
3494 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3495 yet defined at the time a pointer to it was made.
3496 Fix: Do a full lookup on the struct/union tag. */
3498 cleanup_undefined_types ()
3502 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3504 switch (TYPE_CODE (*type
))
3507 case TYPE_CODE_STRUCT
:
3508 case TYPE_CODE_UNION
:
3509 case TYPE_CODE_ENUM
:
3511 /* Check if it has been defined since. */
3512 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3514 struct pending
*ppt
;
3516 /* Name of the type, without "struct" or "union" */
3517 char *typename
= TYPE_TAG_NAME (*type
);
3519 if (typename
== NULL
)
3521 static struct complaint msg
= {"need a type name", 0, 0};
3525 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3527 for (i
= 0; i
< ppt
->nsyms
; i
++)
3529 struct symbol
*sym
= ppt
->symbol
[i
];
3531 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3532 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3533 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3535 && STREQ (SYMBOL_NAME (sym
), typename
))
3537 memcpy (*type
, SYMBOL_TYPE (sym
),
3538 sizeof (struct type
));
3546 case TYPE_CODE_ARRAY
:
3548 struct type
*range_type
;
3551 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3553 if (TYPE_NFIELDS (*type
) != 1)
3555 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3556 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3559 /* Now recompute the length of the array type, based on its
3560 number of elements and the target type's length. */
3561 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3562 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3563 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3564 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3571 static struct complaint msg
= {"\
3572 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3573 complain (&msg
, TYPE_CODE (*type
));
3578 undef_types_length
= 0;
3581 /* Scan through all of the global symbols defined in the object file,
3582 assigning values to the debugging symbols that need to be assigned
3583 to. Get these symbols from the minimal symbol table. */
3586 scan_file_globals (objfile
)
3587 struct objfile
*objfile
;
3590 struct minimal_symbol
*msymbol
;
3591 struct symbol
*sym
, *prev
;
3593 if (objfile
->msymbols
== 0) /* Beware the null file. */
3596 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3602 /* Get the hash index and check all the symbols
3603 under that hash index. */
3605 hash
= hashname (SYMBOL_NAME (msymbol
));
3607 for (sym
= global_sym_chain
[hash
]; sym
;)
3609 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3610 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3612 /* Splice this symbol out of the hash chain and
3613 assign the value we have to it. */
3616 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3620 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3623 /* Check to see whether we need to fix up a common block. */
3624 /* Note: this code might be executed several times for
3625 the same symbol if there are multiple references. */
3627 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3629 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3633 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3638 sym
= SYMBOL_VALUE_CHAIN (prev
);
3642 sym
= global_sym_chain
[hash
];
3648 sym
= SYMBOL_VALUE_CHAIN (sym
);
3654 /* Initialize anything that needs initializing when starting to read
3655 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3663 /* Initialize anything that needs initializing when a completely new
3664 symbol file is specified (not just adding some symbols from another
3665 file, e.g. a shared library). */
3668 stabsread_new_init ()
3670 /* Empty the hash table of global syms looking for values. */
3671 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3674 /* Initialize anything that needs initializing at the same time as
3675 start_symtab() is called. */
3679 global_stabs
= NULL
; /* AIX COFF */
3680 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3681 n_this_object_header_files
= 1;
3682 type_vector_length
= 0;
3683 type_vector
= (struct type
**) 0;
3685 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3686 common_block_name
= NULL
;
3689 /* Call after end_symtab() */
3695 free ((char *) type_vector
);
3698 type_vector_length
= 0;
3699 previous_stab_code
= 0;
3703 finish_global_stabs (objfile
)
3704 struct objfile
*objfile
;
3708 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3709 free ((PTR
) global_stabs
);
3710 global_stabs
= NULL
;
3714 /* Initializer for this module */
3717 _initialize_stabsread ()
3719 undef_types_allocated
= 20;
3720 undef_types_length
= 0;
3721 undef_types
= (struct type
**)
3722 xmalloc (undef_types_allocated
* sizeof (struct type
*));