1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
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. */
35 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
37 #include "complaints.h"
42 /* Ask stabsread.h to define the vars it normally declares `extern'. */
44 #include "stabsread.h" /* Our own declarations */
47 /* The routines that read and process a complete stabs for a C struct or
48 C++ class pass lists of data member fields and lists of member function
49 fields in an instance of a field_info structure, as defined below.
50 This is part of some reorganization of low level C++ support and is
51 expected to eventually go away... (FIXME) */
57 struct nextfield
*next
;
59 /* This is the raw visibility from the stab. It is not checked
60 for being one of the visibilities we recognize, so code which
61 examines this field better be able to deal. */
66 struct next_fnfieldlist
68 struct next_fnfieldlist
*next
;
69 struct fn_fieldlist fn_fieldlist
;
74 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
76 static long read_huge_number
PARAMS ((char **, int, int *));
78 static struct type
*error_type
PARAMS ((char **));
81 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
85 fix_common_block
PARAMS ((struct symbol
*, int));
88 read_type_number
PARAMS ((char **, int *));
91 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
94 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
97 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
100 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
103 rs6000_builtin_type
PARAMS ((int));
106 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
110 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
114 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
118 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
122 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
125 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
129 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
132 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
134 static struct type
**
135 read_args
PARAMS ((char **, int, struct objfile
*));
138 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
141 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
142 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
144 /* Define this as 1 if a pcc declaration of a char or short argument
145 gives the correct address. Otherwise assume pcc gives the
146 address of the corresponding int, which is not the same on a
147 big-endian machine. */
149 #ifndef BELIEVE_PCC_PROMOTION
150 #define BELIEVE_PCC_PROMOTION 0
153 struct complaint invalid_cpp_abbrev_complaint
=
154 {"invalid C++ abbreviation `%s'", 0, 0};
156 struct complaint invalid_cpp_type_complaint
=
157 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
159 struct complaint member_fn_complaint
=
160 {"member function type missing, got '%c'", 0, 0};
162 struct complaint const_vol_complaint
=
163 {"const/volatile indicator missing, got '%c'", 0, 0};
165 struct complaint error_type_complaint
=
166 {"debug info mismatch between compiler and debugger", 0, 0};
168 struct complaint invalid_member_complaint
=
169 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
171 struct complaint range_type_base_complaint
=
172 {"base type %d of range type is not defined", 0, 0};
174 struct complaint reg_value_complaint
=
175 {"register number too large in symbol %s", 0, 0};
177 struct complaint vtbl_notfound_complaint
=
178 {"virtual function table pointer not found when defining class `%s'", 0, 0};
180 struct complaint unrecognized_cplus_name_complaint
=
181 {"Unknown C++ symbol name `%s'", 0, 0};
183 struct complaint rs6000_builtin_complaint
=
184 {"Unknown builtin type %d", 0, 0};
186 struct complaint stabs_general_complaint
=
189 /* Make a list of forward references which haven't been defined. */
191 static struct type
**undef_types
;
192 static int undef_types_allocated
;
193 static int undef_types_length
;
195 /* Check for and handle cretinous stabs symbol name continuation! */
196 #define STABS_CONTINUE(pp) \
198 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
199 *(pp) = next_symbol_text (); \
202 /* FIXME: These probably should be our own types (like rs6000_builtin_type
203 has its own types) rather than builtin_type_*. */
204 static struct type
**os9k_type_vector
[] = {
210 &builtin_type_unsigned_char
,
211 &builtin_type_unsigned_short
,
212 &builtin_type_unsigned_long
,
213 &builtin_type_unsigned_int
,
215 &builtin_type_double
,
217 &builtin_type_long_double
220 static void os9k_init_type_vector
PARAMS ((struct type
**));
223 os9k_init_type_vector(tv
)
227 for (i
=0; i
<sizeof(os9k_type_vector
)/sizeof(struct type
**); i
++)
228 tv
[i
] = (os9k_type_vector
[i
] == 0 ? 0 : *(os9k_type_vector
[i
]));
231 /* Look up a dbx type-number pair. Return the address of the slot
232 where the type for that number-pair is stored.
233 The number-pair is in TYPENUMS.
235 This can be used for finding the type associated with that pair
236 or for associating a new type with the pair. */
239 dbx_lookup_type (typenums
)
242 register int filenum
= typenums
[0];
243 register int index
= typenums
[1];
245 register int real_filenum
;
246 register struct header_file
*f
;
249 if (filenum
== -1) /* -1,-1 is for temporary types. */
252 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
254 static struct complaint msg
= {"\
255 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
257 complain (&msg
, filenum
, index
, symnum
);
265 /* Caller wants address of address of type. We think
266 that negative (rs6k builtin) types will never appear as
267 "lvalues", (nor should they), so we stuff the real type
268 pointer into a temp, and return its address. If referenced,
269 this will do the right thing. */
270 static struct type
*temp_type
;
272 temp_type
= rs6000_builtin_type(index
);
276 /* Type is defined outside of header files.
277 Find it in this object file's type vector. */
278 if (index
>= type_vector_length
)
280 old_len
= type_vector_length
;
283 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
284 type_vector
= (struct type
**)
285 malloc (type_vector_length
* sizeof (struct type
*));
287 while (index
>= type_vector_length
)
289 type_vector_length
*= 2;
291 type_vector
= (struct type
**)
292 xrealloc ((char *) type_vector
,
293 (type_vector_length
* sizeof (struct type
*)));
294 memset (&type_vector
[old_len
], 0,
295 (type_vector_length
- old_len
) * sizeof (struct type
*));
298 /* Deal with OS9000 fundamental types. */
299 os9k_init_type_vector (type_vector
);
301 return (&type_vector
[index
]);
305 real_filenum
= this_object_header_files
[filenum
];
307 if (real_filenum
>= n_header_files
)
309 struct type
*temp_type
;
310 struct type
**temp_type_p
;
312 warning ("GDB internal error: bad real_filenum");
315 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
316 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
317 *temp_type_p
= temp_type
;
321 f
= &header_files
[real_filenum
];
323 f_orig_length
= f
->length
;
324 if (index
>= f_orig_length
)
326 while (index
>= f
->length
)
330 f
->vector
= (struct type
**)
331 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
332 memset (&f
->vector
[f_orig_length
], 0,
333 (f
->length
- f_orig_length
) * sizeof (struct type
*));
335 return (&f
->vector
[index
]);
339 /* Make sure there is a type allocated for type numbers TYPENUMS
340 and return the type object.
341 This can create an empty (zeroed) type object.
342 TYPENUMS may be (-1, -1) to return a new type object that is not
343 put into the type vector, and so may not be referred to by number. */
346 dbx_alloc_type (typenums
, objfile
)
348 struct objfile
*objfile
;
350 register struct type
**type_addr
;
352 if (typenums
[0] == -1)
354 return (alloc_type (objfile
));
357 type_addr
= dbx_lookup_type (typenums
);
359 /* If we are referring to a type not known at all yet,
360 allocate an empty type for it.
361 We will fill it in later if we find out how. */
364 *type_addr
= alloc_type (objfile
);
370 /* for all the stabs in a given stab vector, build appropriate types
371 and fix their symbols in given symbol vector. */
374 patch_block_stabs (symbols
, stabs
, objfile
)
375 struct pending
*symbols
;
376 struct pending_stabs
*stabs
;
377 struct objfile
*objfile
;
387 /* for all the stab entries, find their corresponding symbols and
388 patch their types! */
390 for (ii
= 0; ii
< stabs
->count
; ++ii
)
392 name
= stabs
->stab
[ii
];
393 pp
= (char*) strchr (name
, ':');
397 pp
= (char *)strchr(pp
, ':');
399 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
402 /* On xcoff, if a global is defined and never referenced,
403 ld will remove it from the executable. There is then
404 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
405 sym
= (struct symbol
*)
406 obstack_alloc (&objfile
->symbol_obstack
,
407 sizeof (struct symbol
));
409 memset (sym
, 0, sizeof (struct symbol
));
410 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
411 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
413 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
415 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
417 /* I don't think the linker does this with functions,
418 so as far as I know this is never executed.
419 But it doesn't hurt to check. */
421 lookup_function_type (read_type (&pp
, objfile
));
425 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
427 add_symbol_to_list (sym
, &global_symbols
);
432 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
435 lookup_function_type (read_type (&pp
, objfile
));
439 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
447 /* Read a number by which a type is referred to in dbx data,
448 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
449 Just a single number N is equivalent to (0,N).
450 Return the two numbers by storing them in the vector TYPENUMS.
451 TYPENUMS will then be used as an argument to dbx_lookup_type.
453 Returns 0 for success, -1 for error. */
456 read_type_number (pp
, typenums
)
458 register int *typenums
;
464 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
465 if (nbits
!= 0) return -1;
466 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
467 if (nbits
!= 0) return -1;
472 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
473 if (nbits
!= 0) return -1;
479 /* To handle GNU C++ typename abbreviation, we need to be able to
480 fill in a type's name as soon as space for that type is allocated.
481 `type_synonym_name' is the name of the type being allocated.
482 It is cleared as soon as it is used (lest all allocated types
485 static char *type_synonym_name
;
487 #if !defined (REG_STRUCT_HAS_ADDR)
488 #define REG_STRUCT_HAS_ADDR(gcc_p,type) 0
493 define_symbol (valu
, string
, desc
, type
, objfile
)
498 struct objfile
*objfile
;
500 register struct symbol
*sym
;
501 char *p
= (char *) strchr (string
, ':');
506 /* We would like to eliminate nameless symbols, but keep their types.
507 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
508 to type 2, but, should not create a symbol to address that type. Since
509 the symbol will be nameless, there is no way any user can refer to it. */
513 /* Ignore syms with empty names. */
517 /* Ignore old-style symbols from cc -go */
527 /* If a nameless stab entry, all we need is the type, not the symbol.
528 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
529 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
531 sym
= (struct symbol
*)
532 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
533 memset (sym
, 0, sizeof (struct symbol
));
535 if (processing_gcc_compilation
)
537 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
538 number of bytes occupied by a type or object, which we ignore. */
539 SYMBOL_LINE(sym
) = desc
;
543 SYMBOL_LINE(sym
) = 0; /* unknown */
546 if (string
[0] == CPLUS_MARKER
)
548 /* Special GNU C++ names. */
552 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
553 &objfile
-> symbol_obstack
);
556 case 'v': /* $vtbl_ptr_type */
557 /* Was: SYMBOL_NAME (sym) = "vptr"; */
561 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
562 &objfile
-> symbol_obstack
);
566 /* This was an anonymous type that was never fixed up. */
570 complain (&unrecognized_cplus_name_complaint
, string
);
571 goto normal
; /* Do *something* with it */
577 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
578 SYMBOL_NAME (sym
) = (char *)
579 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
580 /* Open-coded memcpy--saves function call time. */
581 /* FIXME: Does it really? Try replacing with simple strcpy and
582 try it on an executable with a large symbol table. */
583 /* FIXME: considering that gcc can open code memcpy anyway, I
584 doubt it. xoxorich. */
586 register char *p1
= string
;
587 register char *p2
= SYMBOL_NAME (sym
);
595 /* If this symbol is from a C++ compilation, then attempt to cache the
596 demangled form for future reference. This is a typical time versus
597 space tradeoff, that was decided in favor of time because it sped up
598 C++ symbol lookups by a factor of about 20. */
600 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
604 /* Determine the type of name being defined. */
606 /* Getting GDB to correctly skip the symbol on an undefined symbol
607 descriptor and not ever dump core is a very dodgy proposition if
608 we do things this way. I say the acorn RISC machine can just
609 fix their compiler. */
610 /* The Acorn RISC machine's compiler can put out locals that don't
611 start with "234=" or "(3,4)=", so assume anything other than the
612 deftypes we know how to handle is a local. */
613 if (!strchr ("cfFGpPrStTvVXCR", *p
))
615 if (isdigit (*p
) || *p
== '(' || *p
== '-')
624 /* c is a special case, not followed by a type-number.
625 SYMBOL:c=iVALUE for an integer constant symbol.
626 SYMBOL:c=rVALUE for a floating constant symbol.
627 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
628 e.g. "b:c=e6,0" for "const b = blob1"
629 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
632 SYMBOL_CLASS (sym
) = LOC_CONST
;
633 SYMBOL_TYPE (sym
) = error_type (&p
);
634 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
635 add_symbol_to_list (sym
, &file_symbols
);
646 /* FIXME-if-picky-about-floating-accuracy: Should be using
647 target arithmetic to get the value. real.c in GCC
648 probably has the necessary code. */
650 /* FIXME: lookup_fundamental_type is a hack. We should be
651 creating a type especially for the type of float constants.
652 Problem is, what type should it be?
654 Also, what should the name of this type be? Should we
655 be using 'S' constants (see stabs.texinfo) instead? */
657 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
660 obstack_alloc (&objfile
-> symbol_obstack
,
661 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
662 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
663 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
664 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
669 /* Defining integer constants this way is kind of silly,
670 since 'e' constants allows the compiler to give not
671 only the value, but the type as well. C has at least
672 int, long, unsigned int, and long long as constant
673 types; other languages probably should have at least
674 unsigned as well as signed constants. */
676 /* We just need one int constant type for all objfiles.
677 It doesn't depend on languages or anything (arguably its
678 name should be a language-specific name for a type of
679 that size, but I'm inclined to say that if the compiler
680 wants a nice name for the type, it can use 'e'). */
681 static struct type
*int_const_type
;
683 /* Yes, this is as long as a *host* int. That is because we
685 if (int_const_type
== NULL
)
687 init_type (TYPE_CODE_INT
,
688 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
690 (struct objfile
*)NULL
);
691 SYMBOL_TYPE (sym
) = int_const_type
;
692 SYMBOL_VALUE (sym
) = atoi (p
);
693 SYMBOL_CLASS (sym
) = LOC_CONST
;
697 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
698 can be represented as integral.
699 e.g. "b:c=e6,0" for "const b = blob1"
700 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
702 SYMBOL_CLASS (sym
) = LOC_CONST
;
703 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
707 SYMBOL_TYPE (sym
) = error_type (&p
);
712 /* If the value is too big to fit in an int (perhaps because
713 it is unsigned), or something like that, we silently get
714 a bogus value. The type and everything else about it is
715 correct. Ideally, we should be using whatever we have
716 available for parsing unsigned and long long values,
718 SYMBOL_VALUE (sym
) = atoi (p
);
723 SYMBOL_CLASS (sym
) = LOC_CONST
;
724 SYMBOL_TYPE (sym
) = error_type (&p
);
727 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
728 add_symbol_to_list (sym
, &file_symbols
);
732 /* The name of a caught exception. */
733 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
734 SYMBOL_CLASS (sym
) = LOC_LABEL
;
735 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
736 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
737 add_symbol_to_list (sym
, &local_symbols
);
741 /* A static function definition. */
742 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
743 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
744 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
745 add_symbol_to_list (sym
, &file_symbols
);
746 /* fall into process_function_types. */
748 process_function_types
:
749 /* Function result types are described as the result type in stabs.
750 We need to convert this to the function-returning-type-X type
751 in GDB. E.g. "int" is converted to "function returning int". */
752 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
755 /* This code doesn't work -- it needs to realloc and can't. */
756 /* Attempt to set up to record a function prototype... */
757 struct type
*new = alloc_type (objfile
);
759 /* Generate a template for the type of this function. The
760 types of the arguments will be added as we read the symbol
762 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
763 SYMBOL_TYPE(sym
) = new;
764 TYPE_OBJFILE (new) = objfile
;
765 in_function_type
= new;
767 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
770 /* fall into process_prototype_types */
772 process_prototype_types
:
773 /* Sun acc puts declared types of arguments here. We don't care
774 about their actual types (FIXME -- we should remember the whole
775 function prototype), but the list may define some new types
776 that we have to remember, so we must scan it now. */
779 read_type (&p
, objfile
);
784 /* A global function definition. */
785 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
786 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
787 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
788 add_symbol_to_list (sym
, &global_symbols
);
789 goto process_function_types
;
792 /* For a class G (global) symbol, it appears that the
793 value is not correct. It is necessary to search for the
794 corresponding linker definition to find the value.
795 These definitions appear at the end of the namelist. */
796 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
797 i
= hashname (SYMBOL_NAME (sym
));
798 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
799 global_sym_chain
[i
] = sym
;
800 SYMBOL_CLASS (sym
) = LOC_STATIC
;
801 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
802 add_symbol_to_list (sym
, &global_symbols
);
805 /* This case is faked by a conditional above,
806 when there is no code letter in the dbx data.
807 Dbx data never actually contains 'l'. */
810 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
811 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
812 SYMBOL_VALUE (sym
) = valu
;
813 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
814 add_symbol_to_list (sym
, &local_symbols
);
819 /* pF is a two-letter code that means a function parameter in Fortran.
820 The type-number specifies the type of the return value.
821 Translate it into a pointer-to-function type. */
825 = lookup_pointer_type
826 (lookup_function_type (read_type (&p
, objfile
)));
829 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
831 /* Normally this is a parameter, a LOC_ARG. On the i960, it
832 can also be a LOC_LOCAL_ARG depending on symbol type. */
833 #ifndef DBX_PARM_SYMBOL_CLASS
834 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
837 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
838 SYMBOL_VALUE (sym
) = valu
;
839 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
841 /* This doesn't work yet. */
842 add_param_to_type (&in_function_type
, sym
);
844 add_symbol_to_list (sym
, &local_symbols
);
846 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
847 /* On little-endian machines, this crud is never necessary, and,
848 if the extra bytes contain garbage, is harmful. */
850 #else /* Big endian. */
851 /* If it's gcc-compiled, if it says `short', believe it. */
852 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
855 #if !BELIEVE_PCC_PROMOTION
857 /* This is the signed type which arguments get promoted to. */
858 static struct type
*pcc_promotion_type
;
859 /* This is the unsigned type which arguments get promoted to. */
860 static struct type
*pcc_unsigned_promotion_type
;
862 /* Call it "int" because this is mainly C lossage. */
863 if (pcc_promotion_type
== NULL
)
865 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
868 if (pcc_unsigned_promotion_type
== NULL
)
869 pcc_unsigned_promotion_type
=
870 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
871 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
873 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
874 /* This macro is defined on machines (e.g. sparc) where
875 we should believe the type of a PCC 'short' argument,
876 but shouldn't believe the address (the address is
877 the address of the corresponding int).
879 My guess is that this correction, as opposed to changing
880 the parameter to an 'int' (as done below, for PCC
881 on most machines), is the right thing to do
882 on all machines, but I don't want to risk breaking
883 something that already works. On most PCC machines,
884 the sparc problem doesn't come up because the calling
885 function has to zero the top bytes (not knowing whether
886 the called function wants an int or a short), so there
887 is little practical difference between an int and a short
888 (except perhaps what happens when the GDB user types
889 "print short_arg = 0x10000;").
891 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
892 actually produces the correct address (we don't need to fix it
893 up). I made this code adapt so that it will offset the symbol
894 if it was pointing at an int-aligned location and not
895 otherwise. This way you can use the same gdb for 4.0.x and
898 If the parameter is shorter than an int, and is integral
899 (e.g. char, short, or unsigned equivalent), and is claimed to
900 be passed on an integer boundary, don't believe it! Offset the
901 parameter's address to the tail-end of that integer. */
903 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
904 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
905 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
907 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
908 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
912 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
914 /* If PCC says a parameter is a short or a char,
915 it is really an int. */
916 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
917 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
920 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
921 ? pcc_unsigned_promotion_type
922 : pcc_promotion_type
;
926 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
928 #endif /* !BELIEVE_PCC_PROMOTION. */
929 #endif /* Big endian. */
932 /* acc seems to use P to delare the prototypes of functions that
933 are referenced by this file. gdb is not prepared to deal
934 with this extra information. FIXME, it ought to. */
937 read_type (&p
, objfile
);
938 goto process_prototype_types
;
943 /* Parameter which is in a register. */
944 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
945 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
946 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
947 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
949 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
950 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
952 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
953 add_symbol_to_list (sym
, &local_symbols
);
957 /* Register variable (either global or local). */
958 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
959 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
960 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
961 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
963 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
964 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
966 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
969 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
970 name to represent an argument passed in a register.
971 GCC uses 'P' for the same case. So if we find such a symbol pair
972 we combine it into one 'P' symbol.
974 But we only do this in the REG_STRUCT_HAS_ADDR case, so that
975 we can still get information about what is going on with the
976 stack (VAX for computing args_printed, using stack slots instead
977 of saved registers in backtraces, etc.).
979 Note that this code illegally combines
980 main(argc) struct foo argc; { register struct foo argc; }
981 but this case is considered pathological and causes a warning
982 from a decent compiler. */
985 && local_symbols
->nsyms
> 0
986 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
988 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
989 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
))
991 struct symbol
*prev_sym
;
992 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
993 if (SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
994 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
996 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
997 /* Use the type from the LOC_REGISTER; that is the type
998 that is actually in that register. */
999 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1000 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1005 add_symbol_to_list (sym
, &local_symbols
);
1008 add_symbol_to_list (sym
, &file_symbols
);
1012 /* Static symbol at top level of file */
1013 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1014 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1015 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1016 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1017 add_symbol_to_list (sym
, &file_symbols
);
1021 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1023 /* For a nameless type, we don't want a create a symbol, thus we
1024 did not use `sym'. Return without further processing. */
1025 if (nameless
) return NULL
;
1027 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1028 SYMBOL_VALUE (sym
) = valu
;
1029 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1030 /* C++ vagaries: we may have a type which is derived from
1031 a base type which did not have its name defined when the
1032 derived class was output. We fill in the derived class's
1033 base part member's name here in that case. */
1034 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1035 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1036 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1037 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1040 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1041 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1042 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1043 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1046 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1048 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1049 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1051 /* If we are giving a name to a type such as "pointer to
1052 foo" or "function returning foo", we better not set
1053 the TYPE_NAME. If the program contains "typedef char
1054 *caddr_t;", we don't want all variables of type char
1055 * to print as caddr_t. This is not just a
1056 consequence of GDB's type management; PCC and GCC (at
1057 least through version 2.4) both output variables of
1058 either type char * or caddr_t with the type number
1059 defined in the 't' symbol for caddr_t. If a future
1060 compiler cleans this up it GDB is not ready for it
1061 yet, but if it becomes ready we somehow need to
1062 disable this check (without breaking the PCC/GCC2.4
1067 Fortunately, this check seems not to be necessary
1068 for anything except pointers or functions. */
1071 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1074 add_symbol_to_list (sym
, &file_symbols
);
1078 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1079 by 't' which means we are typedef'ing it as well. */
1080 synonym
= *p
== 't';
1085 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1086 strlen (SYMBOL_NAME (sym
)),
1087 &objfile
-> symbol_obstack
);
1089 /* The semantics of C++ state that "struct foo { ... }" also defines
1090 a typedef for "foo". Unfortunately, cfront never makes the typedef
1091 when translating C++ into C. We make the typedef here so that
1092 "ptype foo" works as expected for cfront translated code. */
1093 else if (current_subfile
->language
== language_cplus
)
1096 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1097 strlen (SYMBOL_NAME (sym
)),
1098 &objfile
-> symbol_obstack
);
1101 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1103 /* For a nameless type, we don't want a create a symbol, thus we
1104 did not use `sym'. Return without further processing. */
1105 if (nameless
) return NULL
;
1107 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1108 SYMBOL_VALUE (sym
) = valu
;
1109 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1110 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1111 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1112 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1113 add_symbol_to_list (sym
, &file_symbols
);
1117 /* Clone the sym and then modify it. */
1118 register struct symbol
*typedef_sym
= (struct symbol
*)
1119 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1120 *typedef_sym
= *sym
;
1121 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1122 SYMBOL_VALUE (typedef_sym
) = valu
;
1123 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1124 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1125 TYPE_NAME (SYMBOL_TYPE (sym
))
1126 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1127 add_symbol_to_list (typedef_sym
, &file_symbols
);
1132 /* Static symbol of local scope */
1133 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1134 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1135 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1136 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1138 add_symbol_to_list (sym
, &global_symbols
);
1140 add_symbol_to_list (sym
, &local_symbols
);
1144 /* Reference parameter */
1145 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1146 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1147 SYMBOL_VALUE (sym
) = valu
;
1148 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1149 add_symbol_to_list (sym
, &local_symbols
);
1153 /* This is used by Sun FORTRAN for "function result value".
1154 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1155 that Pascal uses it too, but when I tried it Pascal used
1156 "x:3" (local symbol) instead. */
1157 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1158 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1159 SYMBOL_VALUE (sym
) = valu
;
1160 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1161 add_symbol_to_list (sym
, &local_symbols
);
1165 SYMBOL_TYPE (sym
) = error_type (&p
);
1166 SYMBOL_CLASS (sym
) = LOC_CONST
;
1167 SYMBOL_VALUE (sym
) = 0;
1168 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1169 add_symbol_to_list (sym
, &file_symbols
);
1173 /* When passing structures to a function, some systems sometimes pass
1174 the address in a register, not the structure itself.
1176 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1177 to LOC_REGPARM_ADDR for structures and unions. */
1179 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1180 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1182 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1183 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1184 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1186 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1187 subsequent arguments on the sparc, for example). */
1188 if (SYMBOL_CLASS (sym
) == LOC_ARG
1189 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1191 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1192 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1193 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1199 /* Skip rest of this symbol and return an error type.
1201 General notes on error recovery: error_type always skips to the
1202 end of the symbol (modulo cretinous dbx symbol name continuation).
1203 Thus code like this:
1205 if (*(*pp)++ != ';')
1206 return error_type (pp);
1208 is wrong because if *pp starts out pointing at '\0' (typically as the
1209 result of an earlier error), it will be incremented to point to the
1210 start of the next symbol, which might produce strange results, at least
1211 if you run off the end of the string table. Instead use
1214 return error_type (pp);
1220 foo = error_type (pp);
1224 And in case it isn't obvious, the point of all this hair is so the compiler
1225 can define new types and new syntaxes, and old versions of the
1226 debugger will be able to read the new symbol tables. */
1228 static struct type
*
1232 complain (&error_type_complaint
);
1235 /* Skip to end of symbol. */
1236 while (**pp
!= '\0')
1241 /* Check for and handle cretinous dbx symbol name continuation! */
1242 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1244 *pp
= next_symbol_text ();
1251 return (builtin_type_error
);
1255 /* Read type information or a type definition; return the type. Even
1256 though this routine accepts either type information or a type
1257 definition, the distinction is relevant--some parts of stabsread.c
1258 assume that type information starts with a digit, '-', or '(' in
1259 deciding whether to call read_type. */
1262 read_type (pp
, objfile
)
1264 struct objfile
*objfile
;
1266 register struct type
*type
= 0;
1270 char type_descriptor
;
1272 /* Size in bits of type if specified by a type attribute, or -1 if
1273 there is no size attribute. */
1276 /* Used to distinguish string and bitstring from char-array and set. */
1279 /* Read type number if present. The type number may be omitted.
1280 for instance in a two-dimensional array declared with type
1281 "ar1;1;10;ar1;1;10;4". */
1282 if ((**pp
>= '0' && **pp
<= '9')
1286 if (read_type_number (pp
, typenums
) != 0)
1287 return error_type (pp
);
1289 /* Type is not being defined here. Either it already exists,
1290 or this is a forward reference to it. dbx_alloc_type handles
1293 return dbx_alloc_type (typenums
, objfile
);
1295 /* Type is being defined here. */
1302 /* It might be a type attribute or a member type. */
1303 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1308 /* Type attributes. */
1311 /* Skip to the semicolon. */
1312 while (*p
!= ';' && *p
!= '\0')
1316 return error_type (pp
);
1318 /* Skip the semicolon. */
1324 type_size
= atoi (attr
+ 1);
1334 /* Ignore unrecognized type attributes, so future compilers
1335 can invent new ones. */
1340 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1345 /* 'typenums=' not present, type is anonymous. Read and return
1346 the definition, but don't put it in the type vector. */
1347 typenums
[0] = typenums
[1] = -1;
1351 type_descriptor
= (*pp
)[-1];
1352 switch (type_descriptor
)
1356 enum type_code code
;
1358 /* Used to index through file_symbols. */
1359 struct pending
*ppt
;
1362 /* Name including "struct", etc. */
1366 char *from
, *to
, *p
, *q1
, *q2
;
1368 /* Set the type code according to the following letter. */
1372 code
= TYPE_CODE_STRUCT
;
1375 code
= TYPE_CODE_UNION
;
1378 code
= TYPE_CODE_ENUM
;
1382 /* Complain and keep going, so compilers can invent new
1383 cross-reference types. */
1384 static struct complaint msg
=
1385 {"Unrecognized cross-reference type `%c'", 0, 0};
1386 complain (&msg
, (*pp
)[0]);
1387 code
= TYPE_CODE_STRUCT
;
1392 q1
= strchr(*pp
, '<');
1393 p
= strchr(*pp
, ':');
1395 return error_type (pp
);
1396 while (q1
&& p
> q1
&& p
[1] == ':')
1398 q2
= strchr(q1
, '>');
1404 return error_type (pp
);
1407 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1409 /* Copy the name. */
1415 /* Set the pointer ahead of the name which we just read, and
1420 /* Now check to see whether the type has already been
1421 declared. This was written for arrays of cross-referenced
1422 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1423 sure it is not necessary anymore. But it might be a good
1424 idea, to save a little memory. */
1426 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1427 for (i
= 0; i
< ppt
->nsyms
; i
++)
1429 struct symbol
*sym
= ppt
->symbol
[i
];
1431 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1432 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1433 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1434 && STREQ (SYMBOL_NAME (sym
), type_name
))
1436 obstack_free (&objfile
-> type_obstack
, type_name
);
1437 type
= SYMBOL_TYPE (sym
);
1442 /* Didn't find the type to which this refers, so we must
1443 be dealing with a forward reference. Allocate a type
1444 structure for it, and keep track of it so we can
1445 fill in the rest of the fields when we get the full
1447 type
= dbx_alloc_type (typenums
, objfile
);
1448 TYPE_CODE (type
) = code
;
1449 TYPE_TAG_NAME (type
) = type_name
;
1450 INIT_CPLUS_SPECIFIC(type
);
1451 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1453 add_undefined_type (type
);
1457 case '-': /* RS/6000 built-in type */
1476 /* Peek ahead at the number to detect void. */
1477 if (read_type_number (pp
, xtypenums
) != 0)
1478 return error_type (pp
);
1480 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1481 /* It's being defined as itself. That means it is "void". */
1482 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1487 /* Go back to the number and have read_type get it. This means
1488 that we can deal with something like t(1,2)=(3,4)=... which
1489 the Lucid compiler uses. */
1491 xtype
= read_type (pp
, objfile
);
1493 /* The type is being defined to another type. So we copy the type.
1494 This loses if we copy a C++ class and so we lose track of how
1495 the names are mangled (but g++ doesn't output stabs like this
1498 type
= alloc_type (objfile
);
1499 memcpy (type
, xtype
, sizeof (struct type
));
1501 /* The idea behind clearing the names is that the only purpose
1502 for defining a type to another type is so that the name of
1503 one can be different. So we probably don't need to worry much
1504 about the case where the compiler doesn't give a name to the
1506 TYPE_NAME (type
) = NULL
;
1507 TYPE_TAG_NAME (type
) = NULL
;
1509 if (typenums
[0] != -1)
1510 *dbx_lookup_type (typenums
) = type
;
1514 /* In the following types, we must be sure to overwrite any existing
1515 type that the typenums refer to, rather than allocating a new one
1516 and making the typenums point to the new one. This is because there
1517 may already be pointers to the existing type (if it had been
1518 forward-referenced), and we must change it to a pointer, function,
1519 reference, or whatever, *in-place*. */
1522 type1
= read_type (pp
, objfile
);
1523 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1526 case '&': /* Reference to another type */
1527 type1
= read_type (pp
, objfile
);
1528 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1531 case 'f': /* Function returning another type */
1532 if (os9k_stabs
&& **pp
== '(')
1534 /* Function prototype; skip it.
1535 We must conditionalize this on os9k_stabs because otherwise
1536 it could be confused with a Sun-style (1,3) typenumber
1542 type1
= read_type (pp
, objfile
);
1543 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1546 case 'k': /* Const qualifier on some type (Sun) */
1547 case 'c': /* Const qualifier on some type (OS9000) */
1548 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1549 only accept 'c' in the os9k_stabs case. */
1550 if (type_descriptor
== 'c' && !os9k_stabs
)
1551 return error_type (pp
);
1552 type
= read_type (pp
, objfile
);
1553 /* FIXME! For now, we ignore const and volatile qualifiers. */
1556 case 'B': /* Volatile qual on some type (Sun) */
1557 case 'i': /* Volatile qual on some type (OS9000) */
1558 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1559 only accept 'i' in the os9k_stabs case. */
1560 if (type_descriptor
== 'i' && !os9k_stabs
)
1561 return error_type (pp
);
1562 type
= read_type (pp
, objfile
);
1563 /* FIXME! For now, we ignore const and volatile qualifiers. */
1566 /* FIXME -- we should be doing smash_to_XXX types here. */
1567 case '@': /* Member (class & variable) type */
1569 struct type
*domain
= read_type (pp
, objfile
);
1570 struct type
*memtype
;
1573 /* Invalid member type data format. */
1574 return error_type (pp
);
1577 memtype
= read_type (pp
, objfile
);
1578 type
= dbx_alloc_type (typenums
, objfile
);
1579 smash_to_member_type (type
, domain
, memtype
);
1583 case '#': /* Method (class & fn) type */
1584 if ((*pp
)[0] == '#')
1586 /* We'll get the parameter types from the name. */
1587 struct type
*return_type
;
1590 return_type
= read_type (pp
, objfile
);
1591 if (*(*pp
)++ != ';')
1592 complain (&invalid_member_complaint
, symnum
);
1593 type
= allocate_stub_method (return_type
);
1594 if (typenums
[0] != -1)
1595 *dbx_lookup_type (typenums
) = type
;
1599 struct type
*domain
= read_type (pp
, objfile
);
1600 struct type
*return_type
;
1604 /* Invalid member type data format. */
1605 return error_type (pp
);
1609 return_type
= read_type (pp
, objfile
);
1610 args
= read_args (pp
, ';', objfile
);
1611 type
= dbx_alloc_type (typenums
, objfile
);
1612 smash_to_method_type (type
, domain
, return_type
, args
);
1616 case 'r': /* Range type */
1617 type
= read_range_type (pp
, typenums
, objfile
);
1618 if (typenums
[0] != -1)
1619 *dbx_lookup_type (typenums
) = type
;
1624 /* Const and volatile qualified type. */
1625 type
= read_type (pp
, objfile
);
1628 /* Sun ACC builtin int type */
1629 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1630 if (typenums
[0] != -1)
1631 *dbx_lookup_type (typenums
) = type
;
1635 case 'R': /* Sun ACC builtin float type */
1636 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1637 if (typenums
[0] != -1)
1638 *dbx_lookup_type (typenums
) = type
;
1641 case 'e': /* Enumeration type */
1642 type
= dbx_alloc_type (typenums
, objfile
);
1643 type
= read_enum_type (pp
, type
, objfile
);
1644 if (typenums
[0] != -1)
1645 *dbx_lookup_type (typenums
) = type
;
1648 case 's': /* Struct type */
1649 case 'u': /* Union type */
1650 type
= dbx_alloc_type (typenums
, objfile
);
1651 if (!TYPE_NAME (type
))
1653 TYPE_NAME (type
) = type_synonym_name
;
1655 type_synonym_name
= NULL
;
1656 switch (type_descriptor
)
1659 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1662 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1665 type
= read_struct_type (pp
, type
, objfile
);
1668 case 'a': /* Array type */
1670 return error_type (pp
);
1673 type
= dbx_alloc_type (typenums
, objfile
);
1674 type
= read_array_type (pp
, type
, objfile
);
1676 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1680 type1
= read_type (pp
, objfile
);
1681 type
= create_set_type ((struct type
*) NULL
, type1
);
1683 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1684 if (typenums
[0] != -1)
1685 *dbx_lookup_type (typenums
) = type
;
1689 --*pp
; /* Go back to the symbol in error */
1690 /* Particularly important if it was \0! */
1691 return error_type (pp
);
1696 warning ("GDB internal error, type is NULL in stabsread.c\n");
1697 return error_type (pp
);
1700 /* Size specified in a type attribute overrides any other size. */
1701 if (type_size
!= -1)
1702 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1707 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1708 Return the proper type node for a given builtin type number. */
1710 static struct type
*
1711 rs6000_builtin_type (typenum
)
1714 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1715 #define NUMBER_RECOGNIZED 30
1716 /* This includes an empty slot for type number -0. */
1717 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1718 struct type
*rettype
= NULL
;
1720 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1722 complain (&rs6000_builtin_complaint
, typenum
);
1723 return builtin_type_error
;
1725 if (negative_types
[-typenum
] != NULL
)
1726 return negative_types
[-typenum
];
1728 #if TARGET_CHAR_BIT != 8
1729 #error This code wrong for TARGET_CHAR_BIT not 8
1730 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1731 that if that ever becomes not true, the correct fix will be to
1732 make the size in the struct type to be in bits, not in units of
1739 /* The size of this and all the other types are fixed, defined
1740 by the debugging format. If there is a type called "int" which
1741 is other than 32 bits, then it should use a new negative type
1742 number (or avoid negative type numbers for that case).
1743 See stabs.texinfo. */
1744 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1747 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1750 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1753 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1756 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1757 "unsigned char", NULL
);
1760 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1763 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1764 "unsigned short", NULL
);
1767 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1768 "unsigned int", NULL
);
1771 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1774 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1775 "unsigned long", NULL
);
1778 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1781 /* IEEE single precision (32 bit). */
1782 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1785 /* IEEE double precision (64 bit). */
1786 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1789 /* This is an IEEE double on the RS/6000, and different machines with
1790 different sizes for "long double" should use different negative
1791 type numbers. See stabs.texinfo. */
1792 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1795 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1798 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1801 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1804 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1807 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1810 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1814 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1818 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1822 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1826 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1830 /* Complex type consisting of two IEEE single precision values. */
1831 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1834 /* Complex type consisting of two IEEE double precision values. */
1835 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1838 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1841 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1844 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1847 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1850 negative_types
[-typenum
] = rettype
;
1854 /* This page contains subroutines of read_type. */
1856 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1857 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1858 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1859 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1861 /* Read member function stabs info for C++ classes. The form of each member
1864 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1866 An example with two member functions is:
1868 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1870 For the case of overloaded operators, the format is op$::*.funcs, where
1871 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1872 name (such as `+=') and `.' marks the end of the operator name.
1874 Returns 1 for success, 0 for failure. */
1877 read_member_functions (fip
, pp
, type
, objfile
)
1878 struct field_info
*fip
;
1881 struct objfile
*objfile
;
1885 /* Total number of member functions defined in this class. If the class
1886 defines two `f' functions, and one `g' function, then this will have
1888 int total_length
= 0;
1892 struct next_fnfield
*next
;
1893 struct fn_field fn_field
;
1895 struct type
*look_ahead_type
;
1896 struct next_fnfieldlist
*new_fnlist
;
1897 struct next_fnfield
*new_sublist
;
1901 /* Process each list until we find something that is not a member function
1902 or find the end of the functions. */
1906 /* We should be positioned at the start of the function name.
1907 Scan forward to find the first ':' and if it is not the
1908 first of a "::" delimiter, then this is not a member function. */
1920 look_ahead_type
= NULL
;
1923 new_fnlist
= (struct next_fnfieldlist
*)
1924 xmalloc (sizeof (struct next_fnfieldlist
));
1925 make_cleanup (free
, new_fnlist
);
1926 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1928 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1930 /* This is a completely wierd case. In order to stuff in the
1931 names that might contain colons (the usual name delimiter),
1932 Mike Tiemann defined a different name format which is
1933 signalled if the identifier is "op$". In that case, the
1934 format is "op$::XXXX." where XXXX is the name. This is
1935 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1936 /* This lets the user type "break operator+".
1937 We could just put in "+" as the name, but that wouldn't
1939 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1940 char *o
= opname
+ 3;
1942 /* Skip past '::'. */
1945 STABS_CONTINUE (pp
);
1951 main_fn_name
= savestring (opname
, o
- opname
);
1957 main_fn_name
= savestring (*pp
, p
- *pp
);
1958 /* Skip past '::'. */
1961 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1966 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1967 make_cleanup (free
, new_sublist
);
1968 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1970 /* Check for and handle cretinous dbx symbol name continuation! */
1971 if (look_ahead_type
== NULL
)
1974 STABS_CONTINUE (pp
);
1976 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1979 /* Invalid symtab info for member function. */
1985 /* g++ version 1 kludge */
1986 new_sublist
-> fn_field
.type
= look_ahead_type
;
1987 look_ahead_type
= NULL
;
1997 /* If this is just a stub, then we don't have the real name here. */
1999 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2001 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2002 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2003 new_sublist
-> fn_field
.is_stub
= 1;
2005 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2008 /* Set this member function's visibility fields. */
2011 case VISIBILITY_PRIVATE
:
2012 new_sublist
-> fn_field
.is_private
= 1;
2014 case VISIBILITY_PROTECTED
:
2015 new_sublist
-> fn_field
.is_protected
= 1;
2019 STABS_CONTINUE (pp
);
2022 case 'A': /* Normal functions. */
2023 new_sublist
-> fn_field
.is_const
= 0;
2024 new_sublist
-> fn_field
.is_volatile
= 0;
2027 case 'B': /* `const' member functions. */
2028 new_sublist
-> fn_field
.is_const
= 1;
2029 new_sublist
-> fn_field
.is_volatile
= 0;
2032 case 'C': /* `volatile' member function. */
2033 new_sublist
-> fn_field
.is_const
= 0;
2034 new_sublist
-> fn_field
.is_volatile
= 1;
2037 case 'D': /* `const volatile' member function. */
2038 new_sublist
-> fn_field
.is_const
= 1;
2039 new_sublist
-> fn_field
.is_volatile
= 1;
2042 case '*': /* File compiled with g++ version 1 -- no info */
2047 complain (&const_vol_complaint
, **pp
);
2056 /* virtual member function, followed by index.
2057 The sign bit is set to distinguish pointers-to-methods
2058 from virtual function indicies. Since the array is
2059 in words, the quantity must be shifted left by 1
2060 on 16 bit machine, and by 2 on 32 bit machine, forcing
2061 the sign bit out, and usable as a valid index into
2062 the array. Remove the sign bit here. */
2063 new_sublist
-> fn_field
.voffset
=
2064 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2068 STABS_CONTINUE (pp
);
2069 if (**pp
== ';' || **pp
== '\0')
2071 /* Must be g++ version 1. */
2072 new_sublist
-> fn_field
.fcontext
= 0;
2076 /* Figure out from whence this virtual function came.
2077 It may belong to virtual function table of
2078 one of its baseclasses. */
2079 look_ahead_type
= read_type (pp
, objfile
);
2082 /* g++ version 1 overloaded methods. */
2086 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2095 look_ahead_type
= NULL
;
2101 /* static member function. */
2102 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2103 if (strncmp (new_sublist
-> fn_field
.physname
,
2104 main_fn_name
, strlen (main_fn_name
)))
2106 new_sublist
-> fn_field
.is_stub
= 1;
2112 complain (&member_fn_complaint
, (*pp
)[-1]);
2113 /* Fall through into normal member function. */
2116 /* normal member function. */
2117 new_sublist
-> fn_field
.voffset
= 0;
2118 new_sublist
-> fn_field
.fcontext
= 0;
2122 new_sublist
-> next
= sublist
;
2123 sublist
= new_sublist
;
2125 STABS_CONTINUE (pp
);
2127 while (**pp
!= ';' && **pp
!= '\0');
2131 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2132 obstack_alloc (&objfile
-> type_obstack
,
2133 sizeof (struct fn_field
) * length
);
2134 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2135 sizeof (struct fn_field
) * length
);
2136 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2138 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2141 new_fnlist
-> fn_fieldlist
.length
= length
;
2142 new_fnlist
-> next
= fip
-> fnlist
;
2143 fip
-> fnlist
= new_fnlist
;
2145 total_length
+= length
;
2146 STABS_CONTINUE (pp
);
2151 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2152 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2153 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2154 memset (TYPE_FN_FIELDLISTS (type
), 0,
2155 sizeof (struct fn_fieldlist
) * nfn_fields
);
2156 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2157 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2163 /* Special GNU C++ name.
2165 Returns 1 for success, 0 for failure. "failure" means that we can't
2166 keep parsing and it's time for error_type(). */
2169 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2170 struct field_info
*fip
;
2173 struct objfile
*objfile
;
2178 struct type
*context
;
2188 /* At this point, *pp points to something like "22:23=*22...",
2189 where the type number before the ':' is the "context" and
2190 everything after is a regular type definition. Lookup the
2191 type, find it's name, and construct the field name. */
2193 context
= read_type (pp
, objfile
);
2197 case 'f': /* $vf -- a virtual function table pointer */
2198 fip
->list
->field
.name
=
2199 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2202 case 'b': /* $vb -- a virtual bsomethingorother */
2203 name
= type_name_no_tag (context
);
2206 complain (&invalid_cpp_type_complaint
, symnum
);
2209 fip
->list
->field
.name
=
2210 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2214 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2215 fip
->list
->field
.name
=
2216 obconcat (&objfile
->type_obstack
,
2217 "INVALID_CPLUSPLUS_ABBREV", "", "");
2221 /* At this point, *pp points to the ':'. Skip it and read the
2227 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2230 fip
->list
->field
.type
= read_type (pp
, objfile
);
2232 (*pp
)++; /* Skip the comma. */
2238 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2242 /* This field is unpacked. */
2243 fip
->list
->field
.bitsize
= 0;
2244 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2248 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2249 /* We have no idea what syntax an unrecognized abbrev would have, so
2250 better return 0. If we returned 1, we would need to at least advance
2251 *pp to avoid an infinite loop. */
2258 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2259 struct field_info
*fip
;
2263 struct objfile
*objfile
;
2265 fip
-> list
-> field
.name
=
2266 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2269 /* This means we have a visibility for a field coming. */
2273 fip
-> list
-> visibility
= *(*pp
)++;
2277 /* normal dbx-style format, no explicit visibility */
2278 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2281 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2286 /* Possible future hook for nested types. */
2289 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2295 /* Static class member. */
2296 fip
-> list
-> field
.bitpos
= (long) -1;
2302 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2306 else if (**pp
!= ',')
2308 /* Bad structure-type format. */
2309 complain (&stabs_general_complaint
, "bad structure-type format");
2313 (*pp
)++; /* Skip the comma. */
2317 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2320 complain (&stabs_general_complaint
, "bad structure-type format");
2323 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2326 complain (&stabs_general_complaint
, "bad structure-type format");
2331 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2333 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2334 it is a field which has been optimized out. The correct stab for
2335 this case is to use VISIBILITY_IGNORE, but that is a recent
2336 invention. (2) It is a 0-size array. For example
2337 union { int num; char str[0]; } foo. Printing "<no value>" for
2338 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2339 will continue to work, and a 0-size array as a whole doesn't
2340 have any contents to print.
2342 I suspect this probably could also happen with gcc -gstabs (not
2343 -gstabs+) for static fields, and perhaps other C++ extensions.
2344 Hopefully few people use -gstabs with gdb, since it is intended
2345 for dbx compatibility. */
2347 /* Ignore this field. */
2348 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2352 /* Detect an unpacked field and mark it as such.
2353 dbx gives a bit size for all fields.
2354 Note that forward refs cannot be packed,
2355 and treat enums as if they had the width of ints. */
2357 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2358 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2360 fip
-> list
-> field
.bitsize
= 0;
2362 if ((fip
-> list
-> field
.bitsize
2363 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2364 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2365 && (fip
-> list
-> field
.bitsize
2370 fip
-> list
-> field
.bitpos
% 8 == 0)
2372 fip
-> list
-> field
.bitsize
= 0;
2378 /* Read struct or class data fields. They have the form:
2380 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2382 At the end, we see a semicolon instead of a field.
2384 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2387 The optional VISIBILITY is one of:
2389 '/0' (VISIBILITY_PRIVATE)
2390 '/1' (VISIBILITY_PROTECTED)
2391 '/2' (VISIBILITY_PUBLIC)
2392 '/9' (VISIBILITY_IGNORE)
2394 or nothing, for C style fields with public visibility.
2396 Returns 1 for success, 0 for failure. */
2399 read_struct_fields (fip
, pp
, type
, objfile
)
2400 struct field_info
*fip
;
2403 struct objfile
*objfile
;
2406 struct nextfield
*new;
2408 /* We better set p right now, in case there are no fields at all... */
2412 /* Read each data member type until we find the terminating ';' at the end of
2413 the data member list, or break for some other reason such as finding the
2414 start of the member function list. */
2418 STABS_CONTINUE (pp
);
2419 /* Get space to record the next field's data. */
2420 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2421 make_cleanup (free
, new);
2422 memset (new, 0, sizeof (struct nextfield
));
2423 new -> next
= fip
-> list
;
2426 /* Get the field name. */
2429 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2430 unless the CPLUS_MARKER is followed by an underscore, in
2431 which case it is just the name of an anonymous type, which we
2432 should handle like any other type name. We accept either '$'
2433 or '.', because a field name can never contain one of these
2434 characters except as a CPLUS_MARKER (we probably should be
2435 doing that in most parts of GDB). */
2437 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2439 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2444 /* Look for the ':' that separates the field name from the field
2445 values. Data members are delimited by a single ':', while member
2446 functions are delimited by a pair of ':'s. When we hit the member
2447 functions (if any), terminate scan loop and return. */
2449 while (*p
!= ':' && *p
!= '\0')
2456 /* Check to see if we have hit the member functions yet. */
2461 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2463 if (p
[0] == ':' && p
[1] == ':')
2465 /* chill the list of fields: the last entry (at the head) is a
2466 partially constructed entry which we now scrub. */
2467 fip
-> list
= fip
-> list
-> next
;
2472 /* The stabs for C++ derived classes contain baseclass information which
2473 is marked by a '!' character after the total size. This function is
2474 called when we encounter the baseclass marker, and slurps up all the
2475 baseclass information.
2477 Immediately following the '!' marker is the number of base classes that
2478 the class is derived from, followed by information for each base class.
2479 For each base class, there are two visibility specifiers, a bit offset
2480 to the base class information within the derived class, a reference to
2481 the type for the base class, and a terminating semicolon.
2483 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2485 Baseclass information marker __________________|| | | | | | |
2486 Number of baseclasses __________________________| | | | | | |
2487 Visibility specifiers (2) ________________________| | | | | |
2488 Offset in bits from start of class _________________| | | | |
2489 Type number for base class ___________________________| | | |
2490 Visibility specifiers (2) _______________________________| | |
2491 Offset in bits from start of class ________________________| |
2492 Type number of base class ____________________________________|
2494 Return 1 for success, 0 for (error-type-inducing) failure. */
2497 read_baseclasses (fip
, pp
, type
, objfile
)
2498 struct field_info
*fip
;
2501 struct objfile
*objfile
;
2504 struct nextfield
*new;
2512 /* Skip the '!' baseclass information marker. */
2516 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2519 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2525 /* Some stupid compilers have trouble with the following, so break
2526 it up into simpler expressions. */
2527 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2528 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2531 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2534 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2535 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2539 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2541 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2543 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2544 make_cleanup (free
, new);
2545 memset (new, 0, sizeof (struct nextfield
));
2546 new -> next
= fip
-> list
;
2548 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2550 STABS_CONTINUE (pp
);
2554 /* Nothing to do. */
2557 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2560 /* Unknown character. Complain and treat it as non-virtual. */
2562 static struct complaint msg
= {
2563 "Unknown virtual character `%c' for baseclass", 0, 0};
2564 complain (&msg
, **pp
);
2569 new -> visibility
= *(*pp
)++;
2570 switch (new -> visibility
)
2572 case VISIBILITY_PRIVATE
:
2573 case VISIBILITY_PROTECTED
:
2574 case VISIBILITY_PUBLIC
:
2577 /* Bad visibility format. Complain and treat it as
2580 static struct complaint msg
= {
2581 "Unknown visibility `%c' for baseclass", 0, 0};
2582 complain (&msg
, new -> visibility
);
2583 new -> visibility
= VISIBILITY_PUBLIC
;
2590 /* The remaining value is the bit offset of the portion of the object
2591 corresponding to this baseclass. Always zero in the absence of
2592 multiple inheritance. */
2594 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2599 /* The last piece of baseclass information is the type of the
2600 base class. Read it, and remember it's type name as this
2603 new -> field
.type
= read_type (pp
, objfile
);
2604 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2606 /* skip trailing ';' and bump count of number of fields seen */
2615 /* The tail end of stabs for C++ classes that contain a virtual function
2616 pointer contains a tilde, a %, and a type number.
2617 The type number refers to the base class (possibly this class itself) which
2618 contains the vtable pointer for the current class.
2620 This function is called when we have parsed all the method declarations,
2621 so we can look for the vptr base class info. */
2624 read_tilde_fields (fip
, pp
, type
, objfile
)
2625 struct field_info
*fip
;
2628 struct objfile
*objfile
;
2632 STABS_CONTINUE (pp
);
2634 /* If we are positioned at a ';', then skip it. */
2644 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2646 /* Obsolete flags that used to indicate the presence
2647 of constructors and/or destructors. */
2651 /* Read either a '%' or the final ';'. */
2652 if (*(*pp
)++ == '%')
2654 /* The next number is the type number of the base class
2655 (possibly our own class) which supplies the vtable for
2656 this class. Parse it out, and search that class to find
2657 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2658 and TYPE_VPTR_FIELDNO. */
2663 t
= read_type (pp
, objfile
);
2665 while (*p
!= '\0' && *p
!= ';')
2671 /* Premature end of symbol. */
2675 TYPE_VPTR_BASETYPE (type
) = t
;
2676 if (type
== t
) /* Our own class provides vtbl ptr */
2678 for (i
= TYPE_NFIELDS (t
) - 1;
2679 i
>= TYPE_N_BASECLASSES (t
);
2682 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2683 sizeof (vptr_name
) - 1))
2685 TYPE_VPTR_FIELDNO (type
) = i
;
2689 /* Virtual function table field not found. */
2690 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2695 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2706 attach_fn_fields_to_type (fip
, type
)
2707 struct field_info
*fip
;
2708 register struct type
*type
;
2712 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2714 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2716 /* @@ Memory leak on objfile -> type_obstack? */
2719 TYPE_NFN_FIELDS_TOTAL (type
) +=
2720 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2723 for (n
= TYPE_NFN_FIELDS (type
);
2724 fip
-> fnlist
!= NULL
;
2725 fip
-> fnlist
= fip
-> fnlist
-> next
)
2727 --n
; /* Circumvent Sun3 compiler bug */
2728 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2733 /* Create the vector of fields, and record how big it is.
2734 We need this info to record proper virtual function table information
2735 for this class's virtual functions. */
2738 attach_fields_to_type (fip
, type
, objfile
)
2739 struct field_info
*fip
;
2740 register struct type
*type
;
2741 struct objfile
*objfile
;
2743 register int nfields
= 0;
2744 register int non_public_fields
= 0;
2745 register struct nextfield
*scan
;
2747 /* Count up the number of fields that we have, as well as taking note of
2748 whether or not there are any non-public fields, which requires us to
2749 allocate and build the private_field_bits and protected_field_bits
2752 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2755 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2757 non_public_fields
++;
2761 /* Now we know how many fields there are, and whether or not there are any
2762 non-public fields. Record the field count, allocate space for the
2763 array of fields, and create blank visibility bitfields if necessary. */
2765 TYPE_NFIELDS (type
) = nfields
;
2766 TYPE_FIELDS (type
) = (struct field
*)
2767 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2768 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2770 if (non_public_fields
)
2772 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2774 TYPE_FIELD_PRIVATE_BITS (type
) =
2775 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2776 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2778 TYPE_FIELD_PROTECTED_BITS (type
) =
2779 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2780 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2782 TYPE_FIELD_IGNORE_BITS (type
) =
2783 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2784 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2787 /* Copy the saved-up fields into the field vector. Start from the head
2788 of the list, adding to the tail of the field array, so that they end
2789 up in the same order in the array in which they were added to the list. */
2791 while (nfields
-- > 0)
2793 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2794 switch (fip
-> list
-> visibility
)
2796 case VISIBILITY_PRIVATE
:
2797 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2800 case VISIBILITY_PROTECTED
:
2801 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2804 case VISIBILITY_IGNORE
:
2805 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2808 case VISIBILITY_PUBLIC
:
2812 /* Unknown visibility. Complain and treat it as public. */
2814 static struct complaint msg
= {
2815 "Unknown visibility `%c' for field", 0, 0};
2816 complain (&msg
, fip
-> list
-> visibility
);
2820 fip
-> list
= fip
-> list
-> next
;
2825 /* Read the description of a structure (or union type) and return an object
2826 describing the type.
2828 PP points to a character pointer that points to the next unconsumed token
2829 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2830 *PP will point to "4a:1,0,32;;".
2832 TYPE points to an incomplete type that needs to be filled in.
2834 OBJFILE points to the current objfile from which the stabs information is
2835 being read. (Note that it is redundant in that TYPE also contains a pointer
2836 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2839 static struct type
*
2840 read_struct_type (pp
, type
, objfile
)
2843 struct objfile
*objfile
;
2845 struct cleanup
*back_to
;
2846 struct field_info fi
;
2851 back_to
= make_cleanup (null_cleanup
, 0);
2853 INIT_CPLUS_SPECIFIC (type
);
2854 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2856 /* First comes the total size in bytes. */
2860 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2862 return error_type (pp
);
2865 /* Now read the baseclasses, if any, read the regular C struct or C++
2866 class member fields, attach the fields to the type, read the C++
2867 member functions, attach them to the type, and then read any tilde
2868 field (baseclass specifier for the class holding the main vtable). */
2870 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2871 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2872 || !attach_fields_to_type (&fi
, type
, objfile
)
2873 || !read_member_functions (&fi
, pp
, type
, objfile
)
2874 || !attach_fn_fields_to_type (&fi
, type
)
2875 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2877 do_cleanups (back_to
);
2878 return (error_type (pp
));
2881 do_cleanups (back_to
);
2885 /* Read a definition of an array type,
2886 and create and return a suitable type object.
2887 Also creates a range type which represents the bounds of that
2890 static struct type
*
2891 read_array_type (pp
, type
, objfile
)
2893 register struct type
*type
;
2894 struct objfile
*objfile
;
2896 struct type
*index_type
, *element_type
, *range_type
;
2901 /* Format of an array type:
2902 "ar<index type>;lower;upper;<array_contents_type>".
2903 OS9000: "arlower,upper;<array_contents_type>".
2905 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2906 for these, produce a type like float[][]. */
2909 index_type
= builtin_type_int
;
2912 index_type
= read_type (pp
, objfile
);
2914 /* Improper format of array type decl. */
2915 return error_type (pp
);
2919 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2924 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
2926 return error_type (pp
);
2928 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2933 upper
= read_huge_number (pp
, ';', &nbits
);
2935 return error_type (pp
);
2937 element_type
= read_type (pp
, objfile
);
2946 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2947 type
= create_array_type (type
, element_type
, range_type
);
2949 /* If we have an array whose element type is not yet known, but whose
2950 bounds *are* known, record it to be adjusted at the end of the file. */
2951 /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
2952 the two have the same effect except that the latter is cleaner and the
2953 former would be wrong for types which really are zero-length (if we
2956 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2958 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2959 add_undefined_type (type
);
2966 /* Read a definition of an enumeration type,
2967 and create and return a suitable type object.
2968 Also defines the symbols that represent the values of the type. */
2970 static struct type
*
2971 read_enum_type (pp
, type
, objfile
)
2973 register struct type
*type
;
2974 struct objfile
*objfile
;
2979 register struct symbol
*sym
;
2981 struct pending
**symlist
;
2982 struct pending
*osyms
, *syms
;
2987 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2988 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2989 to do? For now, force all enum values to file scope. */
2990 if (within_function
)
2991 symlist
= &local_symbols
;
2994 symlist
= &file_symbols
;
2996 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3000 /* Size. Perhaps this does not have to be conditionalized on
3001 os9k_stabs (assuming the name of an enum constant can't start
3003 read_huge_number (pp
, 0, &nbits
);
3005 return error_type (pp
);
3008 /* Read the value-names and their values.
3009 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3010 A semicolon or comma instead of a NAME means the end. */
3011 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3013 STABS_CONTINUE (pp
);
3015 while (*p
!= ':') p
++;
3016 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3018 n
= read_huge_number (pp
, ',', &nbits
);
3020 return error_type (pp
);
3022 sym
= (struct symbol
*)
3023 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3024 memset (sym
, 0, sizeof (struct symbol
));
3025 SYMBOL_NAME (sym
) = name
;
3026 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3027 SYMBOL_CLASS (sym
) = LOC_CONST
;
3028 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3029 SYMBOL_VALUE (sym
) = n
;
3030 add_symbol_to_list (sym
, symlist
);
3035 (*pp
)++; /* Skip the semicolon. */
3037 /* Now fill in the fields of the type-structure. */
3039 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3040 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3041 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3042 TYPE_NFIELDS (type
) = nsyms
;
3043 TYPE_FIELDS (type
) = (struct field
*)
3044 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3045 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3047 /* Find the symbols for the values and put them into the type.
3048 The symbols can be found in the symlist that we put them on
3049 to cause them to be defined. osyms contains the old value
3050 of that symlist; everything up to there was defined by us. */
3051 /* Note that we preserve the order of the enum constants, so
3052 that in something like "enum {FOO, LAST_THING=FOO}" we print
3053 FOO, not LAST_THING. */
3055 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
3060 for (; j
< syms
->nsyms
; j
++,n
++)
3062 struct symbol
*xsym
= syms
->symbol
[j
];
3063 SYMBOL_TYPE (xsym
) = type
;
3064 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3065 TYPE_FIELD_VALUE (type
, n
) = 0;
3066 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3067 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3076 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3077 typedefs in every file (for int, long, etc):
3079 type = b <signed> <width>; <offset>; <nbits>
3080 signed = u or s. Possible c in addition to u or s (for char?).
3081 offset = offset from high order bit to start bit of type.
3082 width is # bytes in object of this type, nbits is # bits in type.
3084 The width/offset stuff appears to be for small objects stored in
3085 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3088 static struct type
*
3089 read_sun_builtin_type (pp
, typenums
, objfile
)
3092 struct objfile
*objfile
;
3107 return error_type (pp
);
3111 /* For some odd reason, all forms of char put a c here. This is strange
3112 because no other type has this honor. We can safely ignore this because
3113 we actually determine 'char'acterness by the number of bits specified in
3119 /* The first number appears to be the number of bytes occupied
3120 by this type, except that unsigned short is 4 instead of 2.
3121 Since this information is redundant with the third number,
3122 we will ignore it. */
3123 read_huge_number (pp
, ';', &nbits
);
3125 return error_type (pp
);
3127 /* The second number is always 0, so ignore it too. */
3128 read_huge_number (pp
, ';', &nbits
);
3130 return error_type (pp
);
3132 /* The third number is the number of bits for this type. */
3133 type_bits
= read_huge_number (pp
, 0, &nbits
);
3135 return error_type (pp
);
3136 /* The type *should* end with a semicolon. If it are embedded
3137 in a larger type the semicolon may be the only way to know where
3138 the type ends. If this type is at the end of the stabstring we
3139 can deal with the omitted semicolon (but we don't have to like
3140 it). Don't bother to complain(), Sun's compiler omits the semicolon
3145 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3146 type_bits
/ TARGET_CHAR_BIT
,
3147 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3151 static struct type
*
3152 read_sun_floating_type (pp
, typenums
, objfile
)
3155 struct objfile
*objfile
;
3161 /* The first number has more details about the type, for example
3163 details
= read_huge_number (pp
, ';', &nbits
);
3165 return error_type (pp
);
3167 /* The second number is the number of bytes occupied by this type */
3168 nbytes
= read_huge_number (pp
, ';', &nbits
);
3170 return error_type (pp
);
3172 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3173 || details
== NF_COMPLEX32
)
3174 /* This is a type we can't handle, but we do know the size.
3175 We also will be able to give it a name. */
3176 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3178 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3181 /* Read a number from the string pointed to by *PP.
3182 The value of *PP is advanced over the number.
3183 If END is nonzero, the character that ends the
3184 number must match END, or an error happens;
3185 and that character is skipped if it does match.
3186 If END is zero, *PP is left pointing to that character.
3188 If the number fits in a long, set *BITS to 0 and return the value.
3189 If not, set *BITS to be the number of bits in the number and return 0.
3191 If encounter garbage, set *BITS to -1 and return 0. */
3194 read_huge_number (pp
, end
, bits
)
3214 /* Leading zero means octal. GCC uses this to output values larger
3215 than an int (because that would be hard in decimal). */
3222 upper_limit
= LONG_MAX
/ radix
;
3223 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3225 if (n
<= upper_limit
)
3228 n
+= c
- '0'; /* FIXME this overflows anyway */
3233 /* This depends on large values being output in octal, which is
3240 /* Ignore leading zeroes. */
3244 else if (c
== '2' || c
== '3')
3270 /* Large decimal constants are an error (because it is hard to
3271 count how many bits are in them). */
3277 /* -0x7f is the same as 0x80. So deal with it by adding one to
3278 the number of bits. */
3290 /* It's *BITS which has the interesting information. */
3294 static struct type
*
3295 read_range_type (pp
, typenums
, objfile
)
3298 struct objfile
*objfile
;
3304 struct type
*result_type
;
3305 struct type
*index_type
;
3307 /* First comes a type we are a subrange of.
3308 In C it is usually 0, 1 or the type being defined. */
3309 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3310 not just a type number. */
3311 if (read_type_number (pp
, rangenums
) != 0)
3312 return error_type (pp
);
3313 self_subrange
= (rangenums
[0] == typenums
[0] &&
3314 rangenums
[1] == typenums
[1]);
3316 /* A semicolon should now follow; skip it. */
3320 /* The remaining two operands are usually lower and upper bounds
3321 of the range. But in some special cases they mean something else. */
3322 n2
= read_huge_number (pp
, ';', &n2bits
);
3323 n3
= read_huge_number (pp
, ';', &n3bits
);
3325 if (n2bits
== -1 || n3bits
== -1)
3326 return error_type (pp
);
3328 /* If limits are huge, must be large integral type. */
3329 if (n2bits
!= 0 || n3bits
!= 0)
3331 char got_signed
= 0;
3332 char got_unsigned
= 0;
3333 /* Number of bits in the type. */
3336 /* Range from 0 to <large number> is an unsigned large integral type. */
3337 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3342 /* Range from <large number> to <large number>-1 is a large signed
3343 integral type. Take care of the case where <large number> doesn't
3344 fit in a long but <large number>-1 does. */
3345 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3346 || (n2bits
!= 0 && n3bits
== 0
3347 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3354 if (got_signed
|| got_unsigned
)
3356 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3357 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3361 return error_type (pp
);
3364 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3365 if (self_subrange
&& n2
== 0 && n3
== 0)
3366 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3368 /* If n3 is zero and n2 is not, we want a floating type,
3369 and n2 is the width in bytes.
3371 Fortran programs appear to use this for complex types also,
3372 and they give no way to distinguish between double and single-complex!
3374 GDB does not have complex types.
3376 Just return the complex as a float of that size. It won't work right
3377 for the complex values, but at least it makes the file loadable. */
3379 if (n3
== 0 && n2
> 0)
3381 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3384 /* If the upper bound is -1, it must really be an unsigned int. */
3386 else if (n2
== 0 && n3
== -1)
3388 /* It is unsigned int or unsigned long. */
3389 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3390 compatibility hack. */
3391 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3392 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3395 /* Special case: char is defined (Who knows why) as a subrange of
3396 itself with range 0-127. */
3397 else if (self_subrange
&& n2
== 0 && n3
== 127)
3398 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3400 /* We used to do this only for subrange of self or subrange of int. */
3404 /* n3 actually gives the size. */
3405 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3408 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3410 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3412 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3413 "unsigned long", and we already checked for that,
3414 so don't need to test for it here. */
3416 /* I think this is for Convex "long long". Since I don't know whether
3417 Convex sets self_subrange, I also accept that particular size regardless
3418 of self_subrange. */
3419 else if (n3
== 0 && n2
< 0
3421 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3422 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3423 else if (n2
== -n3
-1)
3426 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3428 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3429 if (n3
== 0x7fffffff)
3430 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3433 /* We have a real range type on our hands. Allocate space and
3434 return a real pointer. */
3436 /* At this point I don't have the faintest idea how to deal with
3437 a self_subrange type; I'm going to assume that this is used
3438 as an idiom, and that all of them are special cases. So . . . */
3440 return error_type (pp
);
3442 index_type
= *dbx_lookup_type (rangenums
);
3443 if (index_type
== NULL
)
3445 /* Does this actually ever happen? Is that why we are worrying
3446 about dealing with it rather than just calling error_type? */
3448 static struct type
*range_type_index
;
3450 complain (&range_type_base_complaint
, rangenums
[1]);
3451 if (range_type_index
== NULL
)
3453 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3454 0, "range type index type", NULL
);
3455 index_type
= range_type_index
;
3458 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3459 return (result_type
);
3462 /* Read in an argument list. This is a list of types, separated by commas
3463 and terminated with END. Return the list of types read in, or (struct type
3464 **)-1 if there is an error. */
3466 static struct type
**
3467 read_args (pp
, end
, objfile
)
3470 struct objfile
*objfile
;
3472 /* FIXME! Remove this arbitrary limit! */
3473 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3479 /* Invalid argument list: no ','. */
3480 return (struct type
**)-1;
3482 STABS_CONTINUE (pp
);
3483 types
[n
++] = read_type (pp
, objfile
);
3485 (*pp
)++; /* get past `end' (the ':' character) */
3489 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3491 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3493 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3494 memset (rval
+ n
, 0, sizeof (struct type
*));
3498 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3500 memcpy (rval
, types
, n
* sizeof (struct type
*));
3504 /* Common block handling. */
3506 /* List of symbols declared since the last BCOMM. This list is a tail
3507 of local_symbols. When ECOMM is seen, the symbols on the list
3508 are noted so their proper addresses can be filled in later,
3509 using the common block base address gotten from the assembler
3512 static struct pending
*common_block
;
3513 static int common_block_i
;
3515 /* Name of the current common block. We get it from the BCOMM instead of the
3516 ECOMM to match IBM documentation (even though IBM puts the name both places
3517 like everyone else). */
3518 static char *common_block_name
;
3520 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3521 to remain after this function returns. */
3524 common_block_start (name
, objfile
)
3526 struct objfile
*objfile
;
3528 if (common_block_name
!= NULL
)
3530 static struct complaint msg
= {
3531 "Invalid symbol data: common block within common block",
3535 common_block
= local_symbols
;
3536 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3537 common_block_name
= obsavestring (name
, strlen (name
),
3538 &objfile
-> symbol_obstack
);
3541 /* Process a N_ECOMM symbol. */
3544 common_block_end (objfile
)
3545 struct objfile
*objfile
;
3547 /* Symbols declared since the BCOMM are to have the common block
3548 start address added in when we know it. common_block and
3549 common_block_i point to the first symbol after the BCOMM in
3550 the local_symbols list; copy the list and hang it off the
3551 symbol for the common block name for later fixup. */
3554 struct pending
*new = 0;
3555 struct pending
*next
;
3558 if (common_block_name
== NULL
)
3560 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3565 sym
= (struct symbol
*)
3566 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3567 memset (sym
, 0, sizeof (struct symbol
));
3568 SYMBOL_NAME (sym
) = common_block_name
;
3569 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3571 /* Now we copy all the symbols which have been defined since the BCOMM. */
3573 /* Copy all the struct pendings before common_block. */
3574 for (next
= local_symbols
;
3575 next
!= NULL
&& next
!= common_block
;
3578 for (j
= 0; j
< next
->nsyms
; j
++)
3579 add_symbol_to_list (next
->symbol
[j
], &new);
3582 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3583 NULL, it means copy all the local symbols (which we already did
3586 if (common_block
!= NULL
)
3587 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3588 add_symbol_to_list (common_block
->symbol
[j
], &new);
3590 SYMBOL_TYPE (sym
) = (struct type
*) new;
3592 /* Should we be putting local_symbols back to what it was?
3595 i
= hashname (SYMBOL_NAME (sym
));
3596 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3597 global_sym_chain
[i
] = sym
;
3598 common_block_name
= NULL
;
3601 /* Add a common block's start address to the offset of each symbol
3602 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3603 the common block name). */
3606 fix_common_block (sym
, valu
)
3610 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3611 for ( ; next
; next
= next
->next
)
3614 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3615 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3621 /* What about types defined as forward references inside of a small lexical
3623 /* Add a type to the list of undefined types to be checked through
3624 once this file has been read in. */
3627 add_undefined_type (type
)
3630 if (undef_types_length
== undef_types_allocated
)
3632 undef_types_allocated
*= 2;
3633 undef_types
= (struct type
**)
3634 xrealloc ((char *) undef_types
,
3635 undef_types_allocated
* sizeof (struct type
*));
3637 undef_types
[undef_types_length
++] = type
;
3640 /* Go through each undefined type, see if it's still undefined, and fix it
3641 up if possible. We have two kinds of undefined types:
3643 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3644 Fix: update array length using the element bounds
3645 and the target type's length.
3646 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3647 yet defined at the time a pointer to it was made.
3648 Fix: Do a full lookup on the struct/union tag. */
3650 cleanup_undefined_types ()
3654 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3656 switch (TYPE_CODE (*type
))
3659 case TYPE_CODE_STRUCT
:
3660 case TYPE_CODE_UNION
:
3661 case TYPE_CODE_ENUM
:
3663 /* Check if it has been defined since. Need to do this here
3664 as well as in check_stub_type to deal with the (legitimate in
3665 C though not C++) case of several types with the same name
3666 in different source files. */
3667 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3669 struct pending
*ppt
;
3671 /* Name of the type, without "struct" or "union" */
3672 char *typename
= TYPE_TAG_NAME (*type
);
3674 if (typename
== NULL
)
3676 static struct complaint msg
= {"need a type name", 0, 0};
3680 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3682 for (i
= 0; i
< ppt
->nsyms
; i
++)
3684 struct symbol
*sym
= ppt
->symbol
[i
];
3686 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3687 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3688 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3690 && STREQ (SYMBOL_NAME (sym
), typename
))
3692 memcpy (*type
, SYMBOL_TYPE (sym
),
3693 sizeof (struct type
));
3701 case TYPE_CODE_ARRAY
:
3703 /* This is a kludge which is here for historical reasons
3704 because I suspect that check_stub_type does not get
3705 called everywhere it needs to be called for arrays. Even
3706 with this kludge, those places are broken for the case
3707 where the stub type is defined in another compilation
3708 unit, but this kludge at least deals with it for the case
3709 in which it is the same compilation unit.
3711 Don't try to do this by calling check_stub_type; it might
3712 cause symbols to be read in lookup_symbol, and the symbol
3713 reader is not reentrant. */
3715 struct type
*range_type
;
3718 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3720 if (TYPE_NFIELDS (*type
) != 1)
3722 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3723 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3726 /* Now recompute the length of the array type, based on its
3727 number of elements and the target type's length. */
3728 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3729 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3730 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3731 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3733 /* If the target type is not a stub, we could be clearing
3734 TYPE_FLAG_TARGET_STUB for *type. */
3741 static struct complaint msg
= {"\
3742 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3743 complain (&msg
, TYPE_CODE (*type
));
3749 undef_types_length
= 0;
3752 /* Scan through all of the global symbols defined in the object file,
3753 assigning values to the debugging symbols that need to be assigned
3754 to. Get these symbols from the minimal symbol table. */
3757 scan_file_globals (objfile
)
3758 struct objfile
*objfile
;
3761 struct minimal_symbol
*msymbol
;
3762 struct symbol
*sym
, *prev
;
3764 if (objfile
->msymbols
== 0) /* Beware the null file. */
3767 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3773 /* Get the hash index and check all the symbols
3774 under that hash index. */
3776 hash
= hashname (SYMBOL_NAME (msymbol
));
3778 for (sym
= global_sym_chain
[hash
]; sym
;)
3780 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3781 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3783 /* Splice this symbol out of the hash chain and
3784 assign the value we have to it. */
3787 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3791 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3794 /* Check to see whether we need to fix up a common block. */
3795 /* Note: this code might be executed several times for
3796 the same symbol if there are multiple references. */
3798 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3800 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3804 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3809 sym
= SYMBOL_VALUE_CHAIN (prev
);
3813 sym
= global_sym_chain
[hash
];
3819 sym
= SYMBOL_VALUE_CHAIN (sym
);
3825 /* Initialize anything that needs initializing when starting to read
3826 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3834 /* Initialize anything that needs initializing when a completely new
3835 symbol file is specified (not just adding some symbols from another
3836 file, e.g. a shared library). */
3839 stabsread_new_init ()
3841 /* Empty the hash table of global syms looking for values. */
3842 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3845 /* Initialize anything that needs initializing at the same time as
3846 start_symtab() is called. */
3850 global_stabs
= NULL
; /* AIX COFF */
3851 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3852 n_this_object_header_files
= 1;
3853 type_vector_length
= 0;
3854 type_vector
= (struct type
**) 0;
3856 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3857 common_block_name
= NULL
;
3862 /* Call after end_symtab() */
3868 free ((char *) type_vector
);
3871 type_vector_length
= 0;
3872 previous_stab_code
= 0;
3876 finish_global_stabs (objfile
)
3877 struct objfile
*objfile
;
3881 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3882 free ((PTR
) global_stabs
);
3883 global_stabs
= NULL
;
3887 /* Initializer for this module */
3890 _initialize_stabsread ()
3892 undef_types_allocated
= 20;
3893 undef_types_length
= 0;
3894 undef_types
= (struct type
**)
3895 xmalloc (undef_types_allocated
* sizeof (struct type
*));