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) 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
)
987 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
988 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
))
990 struct symbol
*prev_sym
;
991 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
992 if (SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
993 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
995 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
996 /* Use the type from the LOC_REGISTER; that is the type
997 that is actually in that register. */
998 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
999 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1004 add_symbol_to_list (sym
, &local_symbols
);
1007 add_symbol_to_list (sym
, &file_symbols
);
1011 /* Static symbol at top level of file */
1012 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1013 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1014 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1015 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1016 add_symbol_to_list (sym
, &file_symbols
);
1020 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1022 /* For a nameless type, we don't want a create a symbol, thus we
1023 did not use `sym'. Return without further processing. */
1024 if (nameless
) return NULL
;
1026 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1027 SYMBOL_VALUE (sym
) = valu
;
1028 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1029 /* C++ vagaries: we may have a type which is derived from
1030 a base type which did not have its name defined when the
1031 derived class was output. We fill in the derived class's
1032 base part member's name here in that case. */
1033 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1034 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1035 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1036 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1039 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1040 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1041 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1042 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1045 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1047 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1048 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1050 /* If we are giving a name to a type such as "pointer to
1051 foo" or "function returning foo", we better not set
1052 the TYPE_NAME. If the program contains "typedef char
1053 *caddr_t;", we don't want all variables of type char
1054 * to print as caddr_t. This is not just a
1055 consequence of GDB's type management; PCC and GCC (at
1056 least through version 2.4) both output variables of
1057 either type char * or caddr_t with the type number
1058 defined in the 't' symbol for caddr_t. If a future
1059 compiler cleans this up it GDB is not ready for it
1060 yet, but if it becomes ready we somehow need to
1061 disable this check (without breaking the PCC/GCC2.4
1066 Fortunately, this check seems not to be necessary
1067 for anything except pointers or functions. */
1070 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1073 add_symbol_to_list (sym
, &file_symbols
);
1077 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1078 by 't' which means we are typedef'ing it as well. */
1079 synonym
= *p
== 't';
1084 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1085 strlen (SYMBOL_NAME (sym
)),
1086 &objfile
-> symbol_obstack
);
1088 /* The semantics of C++ state that "struct foo { ... }" also defines
1089 a typedef for "foo". Unfortunately, cfront never makes the typedef
1090 when translating C++ into C. We make the typedef here so that
1091 "ptype foo" works as expected for cfront translated code. */
1092 else if (current_subfile
->language
== language_cplus
)
1095 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1096 strlen (SYMBOL_NAME (sym
)),
1097 &objfile
-> symbol_obstack
);
1100 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1102 /* For a nameless type, we don't want a create a symbol, thus we
1103 did not use `sym'. Return without further processing. */
1104 if (nameless
) return NULL
;
1106 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1107 SYMBOL_VALUE (sym
) = valu
;
1108 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1109 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1110 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1111 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1112 add_symbol_to_list (sym
, &file_symbols
);
1116 /* Clone the sym and then modify it. */
1117 register struct symbol
*typedef_sym
= (struct symbol
*)
1118 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1119 *typedef_sym
= *sym
;
1120 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1121 SYMBOL_VALUE (typedef_sym
) = valu
;
1122 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1123 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1124 TYPE_NAME (SYMBOL_TYPE (sym
))
1125 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1126 add_symbol_to_list (typedef_sym
, &file_symbols
);
1131 /* Static symbol of local scope */
1132 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1133 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1134 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1135 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1137 add_symbol_to_list (sym
, &global_symbols
);
1139 add_symbol_to_list (sym
, &local_symbols
);
1143 /* Reference parameter */
1144 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1145 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1146 SYMBOL_VALUE (sym
) = valu
;
1147 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1148 add_symbol_to_list (sym
, &local_symbols
);
1152 /* This is used by Sun FORTRAN for "function result value".
1153 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1154 that Pascal uses it too, but when I tried it Pascal used
1155 "x:3" (local symbol) instead. */
1156 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1157 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1158 SYMBOL_VALUE (sym
) = valu
;
1159 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1160 add_symbol_to_list (sym
, &local_symbols
);
1164 SYMBOL_TYPE (sym
) = error_type (&p
);
1165 SYMBOL_CLASS (sym
) = LOC_CONST
;
1166 SYMBOL_VALUE (sym
) = 0;
1167 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1168 add_symbol_to_list (sym
, &file_symbols
);
1172 /* When passing structures to a function, some systems sometimes pass
1173 the address in a register, not the structure itself.
1175 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1176 to LOC_REGPARM_ADDR for structures and unions. */
1178 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1179 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1180 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1181 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1182 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1184 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1185 subsequent arguments on the sparc, for example). */
1186 if (SYMBOL_CLASS (sym
) == LOC_ARG
1187 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1188 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1189 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1190 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1196 /* Skip rest of this symbol and return an error type.
1198 General notes on error recovery: error_type always skips to the
1199 end of the symbol (modulo cretinous dbx symbol name continuation).
1200 Thus code like this:
1202 if (*(*pp)++ != ';')
1203 return error_type (pp);
1205 is wrong because if *pp starts out pointing at '\0' (typically as the
1206 result of an earlier error), it will be incremented to point to the
1207 start of the next symbol, which might produce strange results, at least
1208 if you run off the end of the string table. Instead use
1211 return error_type (pp);
1217 foo = error_type (pp);
1221 And in case it isn't obvious, the point of all this hair is so the compiler
1222 can define new types and new syntaxes, and old versions of the
1223 debugger will be able to read the new symbol tables. */
1225 static struct type
*
1229 complain (&error_type_complaint
);
1232 /* Skip to end of symbol. */
1233 while (**pp
!= '\0')
1238 /* Check for and handle cretinous dbx symbol name continuation! */
1239 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1241 *pp
= next_symbol_text ();
1248 return (builtin_type_error
);
1252 /* Read type information or a type definition; return the type. Even
1253 though this routine accepts either type information or a type
1254 definition, the distinction is relevant--some parts of stabsread.c
1255 assume that type information starts with a digit, '-', or '(' in
1256 deciding whether to call read_type. */
1259 read_type (pp
, objfile
)
1261 struct objfile
*objfile
;
1263 register struct type
*type
= 0;
1267 char type_descriptor
;
1269 /* Size in bits of type if specified by a type attribute, or -1 if
1270 there is no size attribute. */
1273 /* Used to distinguish string and bitstring from char-array and set. */
1276 /* Read type number if present. The type number may be omitted.
1277 for instance in a two-dimensional array declared with type
1278 "ar1;1;10;ar1;1;10;4". */
1279 if ((**pp
>= '0' && **pp
<= '9')
1283 if (read_type_number (pp
, typenums
) != 0)
1284 return error_type (pp
);
1286 /* Type is not being defined here. Either it already exists,
1287 or this is a forward reference to it. dbx_alloc_type handles
1290 return dbx_alloc_type (typenums
, objfile
);
1292 /* Type is being defined here. */
1299 /* It might be a type attribute or a member type. */
1300 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1305 /* Type attributes. */
1308 /* Skip to the semicolon. */
1309 while (*p
!= ';' && *p
!= '\0')
1313 return error_type (pp
);
1315 /* Skip the semicolon. */
1321 type_size
= atoi (attr
+ 1);
1331 /* Ignore unrecognized type attributes, so future compilers
1332 can invent new ones. */
1337 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1342 /* 'typenums=' not present, type is anonymous. Read and return
1343 the definition, but don't put it in the type vector. */
1344 typenums
[0] = typenums
[1] = -1;
1348 type_descriptor
= (*pp
)[-1];
1349 switch (type_descriptor
)
1353 enum type_code code
;
1355 /* Used to index through file_symbols. */
1356 struct pending
*ppt
;
1359 /* Name including "struct", etc. */
1363 char *from
, *to
, *p
, *q1
, *q2
;
1365 /* Set the type code according to the following letter. */
1369 code
= TYPE_CODE_STRUCT
;
1372 code
= TYPE_CODE_UNION
;
1375 code
= TYPE_CODE_ENUM
;
1379 /* Complain and keep going, so compilers can invent new
1380 cross-reference types. */
1381 static struct complaint msg
=
1382 {"Unrecognized cross-reference type `%c'", 0, 0};
1383 complain (&msg
, (*pp
)[0]);
1384 code
= TYPE_CODE_STRUCT
;
1389 q1
= strchr(*pp
, '<');
1390 p
= strchr(*pp
, ':');
1392 return error_type (pp
);
1393 while (q1
&& p
> q1
&& p
[1] == ':')
1395 q2
= strchr(q1
, '>');
1401 return error_type (pp
);
1404 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1406 /* Copy the name. */
1412 /* Set the pointer ahead of the name which we just read, and
1417 /* Now check to see whether the type has already been
1418 declared. This was written for arrays of cross-referenced
1419 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1420 sure it is not necessary anymore. But it might be a good
1421 idea, to save a little memory. */
1423 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1424 for (i
= 0; i
< ppt
->nsyms
; i
++)
1426 struct symbol
*sym
= ppt
->symbol
[i
];
1428 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1429 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1430 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1431 && STREQ (SYMBOL_NAME (sym
), type_name
))
1433 obstack_free (&objfile
-> type_obstack
, type_name
);
1434 type
= SYMBOL_TYPE (sym
);
1439 /* Didn't find the type to which this refers, so we must
1440 be dealing with a forward reference. Allocate a type
1441 structure for it, and keep track of it so we can
1442 fill in the rest of the fields when we get the full
1444 type
= dbx_alloc_type (typenums
, objfile
);
1445 TYPE_CODE (type
) = code
;
1446 TYPE_TAG_NAME (type
) = type_name
;
1447 INIT_CPLUS_SPECIFIC(type
);
1448 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1450 add_undefined_type (type
);
1454 case '-': /* RS/6000 built-in type */
1473 /* Peek ahead at the number to detect void. */
1474 if (read_type_number (pp
, xtypenums
) != 0)
1475 return error_type (pp
);
1477 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1478 /* It's being defined as itself. That means it is "void". */
1479 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1484 /* Go back to the number and have read_type get it. This means
1485 that we can deal with something like t(1,2)=(3,4)=... which
1486 the Lucid compiler uses. */
1488 xtype
= read_type (pp
, objfile
);
1490 /* The type is being defined to another type. So we copy the type.
1491 This loses if we copy a C++ class and so we lose track of how
1492 the names are mangled (but g++ doesn't output stabs like this
1495 type
= alloc_type (objfile
);
1496 memcpy (type
, xtype
, sizeof (struct type
));
1498 /* The idea behind clearing the names is that the only purpose
1499 for defining a type to another type is so that the name of
1500 one can be different. So we probably don't need to worry much
1501 about the case where the compiler doesn't give a name to the
1503 TYPE_NAME (type
) = NULL
;
1504 TYPE_TAG_NAME (type
) = NULL
;
1506 if (typenums
[0] != -1)
1507 *dbx_lookup_type (typenums
) = type
;
1511 /* In the following types, we must be sure to overwrite any existing
1512 type that the typenums refer to, rather than allocating a new one
1513 and making the typenums point to the new one. This is because there
1514 may already be pointers to the existing type (if it had been
1515 forward-referenced), and we must change it to a pointer, function,
1516 reference, or whatever, *in-place*. */
1519 type1
= read_type (pp
, objfile
);
1520 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1523 case '&': /* Reference to another type */
1524 type1
= read_type (pp
, objfile
);
1525 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1528 case 'f': /* Function returning another type */
1529 if (os9k_stabs
&& **pp
== '(')
1531 /* Function prototype; skip it.
1532 We must conditionalize this on os9k_stabs because otherwise
1533 it could be confused with a Sun-style (1,3) typenumber
1539 type1
= read_type (pp
, objfile
);
1540 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1543 case 'k': /* Const qualifier on some type (Sun) */
1544 case 'c': /* Const qualifier on some type (OS9000) */
1545 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1546 only accept 'c' in the os9k_stabs case. */
1547 if (type_descriptor
== 'c' && !os9k_stabs
)
1548 return error_type (pp
);
1549 type
= read_type (pp
, objfile
);
1550 /* FIXME! For now, we ignore const and volatile qualifiers. */
1553 case 'B': /* Volatile qual on some type (Sun) */
1554 case 'i': /* Volatile qual on some type (OS9000) */
1555 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1556 only accept 'i' in the os9k_stabs case. */
1557 if (type_descriptor
== 'i' && !os9k_stabs
)
1558 return error_type (pp
);
1559 type
= read_type (pp
, objfile
);
1560 /* FIXME! For now, we ignore const and volatile qualifiers. */
1563 /* FIXME -- we should be doing smash_to_XXX types here. */
1564 case '@': /* Member (class & variable) type */
1566 struct type
*domain
= read_type (pp
, objfile
);
1567 struct type
*memtype
;
1570 /* Invalid member type data format. */
1571 return error_type (pp
);
1574 memtype
= read_type (pp
, objfile
);
1575 type
= dbx_alloc_type (typenums
, objfile
);
1576 smash_to_member_type (type
, domain
, memtype
);
1580 case '#': /* Method (class & fn) type */
1581 if ((*pp
)[0] == '#')
1583 /* We'll get the parameter types from the name. */
1584 struct type
*return_type
;
1587 return_type
= read_type (pp
, objfile
);
1588 if (*(*pp
)++ != ';')
1589 complain (&invalid_member_complaint
, symnum
);
1590 type
= allocate_stub_method (return_type
);
1591 if (typenums
[0] != -1)
1592 *dbx_lookup_type (typenums
) = type
;
1596 struct type
*domain
= read_type (pp
, objfile
);
1597 struct type
*return_type
;
1601 /* Invalid member type data format. */
1602 return error_type (pp
);
1606 return_type
= read_type (pp
, objfile
);
1607 args
= read_args (pp
, ';', objfile
);
1608 type
= dbx_alloc_type (typenums
, objfile
);
1609 smash_to_method_type (type
, domain
, return_type
, args
);
1613 case 'r': /* Range type */
1614 type
= read_range_type (pp
, typenums
, objfile
);
1615 if (typenums
[0] != -1)
1616 *dbx_lookup_type (typenums
) = type
;
1621 /* Const and volatile qualified type. */
1622 type
= read_type (pp
, objfile
);
1625 /* Sun ACC builtin int type */
1626 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1627 if (typenums
[0] != -1)
1628 *dbx_lookup_type (typenums
) = type
;
1632 case 'R': /* Sun ACC builtin float type */
1633 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1634 if (typenums
[0] != -1)
1635 *dbx_lookup_type (typenums
) = type
;
1638 case 'e': /* Enumeration type */
1639 type
= dbx_alloc_type (typenums
, objfile
);
1640 type
= read_enum_type (pp
, type
, objfile
);
1641 if (typenums
[0] != -1)
1642 *dbx_lookup_type (typenums
) = type
;
1645 case 's': /* Struct type */
1646 case 'u': /* Union type */
1647 type
= dbx_alloc_type (typenums
, objfile
);
1648 if (!TYPE_NAME (type
))
1650 TYPE_NAME (type
) = type_synonym_name
;
1652 type_synonym_name
= NULL
;
1653 switch (type_descriptor
)
1656 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1659 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1662 type
= read_struct_type (pp
, type
, objfile
);
1665 case 'a': /* Array type */
1667 return error_type (pp
);
1670 type
= dbx_alloc_type (typenums
, objfile
);
1671 type
= read_array_type (pp
, type
, objfile
);
1673 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1677 type1
= read_type (pp
, objfile
);
1678 type
= create_set_type ((struct type
*) NULL
, type1
);
1680 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1681 if (typenums
[0] != -1)
1682 *dbx_lookup_type (typenums
) = type
;
1686 --*pp
; /* Go back to the symbol in error */
1687 /* Particularly important if it was \0! */
1688 return error_type (pp
);
1693 warning ("GDB internal error, type is NULL in stabsread.c\n");
1694 return error_type (pp
);
1697 /* Size specified in a type attribute overrides any other size. */
1698 if (type_size
!= -1)
1699 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1704 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1705 Return the proper type node for a given builtin type number. */
1707 static struct type
*
1708 rs6000_builtin_type (typenum
)
1711 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1712 #define NUMBER_RECOGNIZED 30
1713 /* This includes an empty slot for type number -0. */
1714 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1715 struct type
*rettype
= NULL
;
1717 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1719 complain (&rs6000_builtin_complaint
, typenum
);
1720 return builtin_type_error
;
1722 if (negative_types
[-typenum
] != NULL
)
1723 return negative_types
[-typenum
];
1725 #if TARGET_CHAR_BIT != 8
1726 #error This code wrong for TARGET_CHAR_BIT not 8
1727 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1728 that if that ever becomes not true, the correct fix will be to
1729 make the size in the struct type to be in bits, not in units of
1736 /* The size of this and all the other types are fixed, defined
1737 by the debugging format. If there is a type called "int" which
1738 is other than 32 bits, then it should use a new negative type
1739 number (or avoid negative type numbers for that case).
1740 See stabs.texinfo. */
1741 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1744 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1747 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1750 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1753 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1754 "unsigned char", NULL
);
1757 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1760 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1761 "unsigned short", NULL
);
1764 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1765 "unsigned int", NULL
);
1768 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1771 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1772 "unsigned long", NULL
);
1775 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1778 /* IEEE single precision (32 bit). */
1779 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1782 /* IEEE double precision (64 bit). */
1783 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1786 /* This is an IEEE double on the RS/6000, and different machines with
1787 different sizes for "long double" should use different negative
1788 type numbers. See stabs.texinfo. */
1789 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1792 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1795 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1798 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1801 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1804 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1807 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1811 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1815 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1819 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1823 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1827 /* Complex type consisting of two IEEE single precision values. */
1828 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1831 /* Complex type consisting of two IEEE double precision values. */
1832 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1835 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1838 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1841 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1844 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1847 negative_types
[-typenum
] = rettype
;
1851 /* This page contains subroutines of read_type. */
1853 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1854 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1855 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1856 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1858 /* Read member function stabs info for C++ classes. The form of each member
1861 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1863 An example with two member functions is:
1865 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1867 For the case of overloaded operators, the format is op$::*.funcs, where
1868 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1869 name (such as `+=') and `.' marks the end of the operator name.
1871 Returns 1 for success, 0 for failure. */
1874 read_member_functions (fip
, pp
, type
, objfile
)
1875 struct field_info
*fip
;
1878 struct objfile
*objfile
;
1882 /* Total number of member functions defined in this class. If the class
1883 defines two `f' functions, and one `g' function, then this will have
1885 int total_length
= 0;
1889 struct next_fnfield
*next
;
1890 struct fn_field fn_field
;
1892 struct type
*look_ahead_type
;
1893 struct next_fnfieldlist
*new_fnlist
;
1894 struct next_fnfield
*new_sublist
;
1898 /* Process each list until we find something that is not a member function
1899 or find the end of the functions. */
1903 /* We should be positioned at the start of the function name.
1904 Scan forward to find the first ':' and if it is not the
1905 first of a "::" delimiter, then this is not a member function. */
1917 look_ahead_type
= NULL
;
1920 new_fnlist
= (struct next_fnfieldlist
*)
1921 xmalloc (sizeof (struct next_fnfieldlist
));
1922 make_cleanup (free
, new_fnlist
);
1923 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1925 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1927 /* This is a completely wierd case. In order to stuff in the
1928 names that might contain colons (the usual name delimiter),
1929 Mike Tiemann defined a different name format which is
1930 signalled if the identifier is "op$". In that case, the
1931 format is "op$::XXXX." where XXXX is the name. This is
1932 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1933 /* This lets the user type "break operator+".
1934 We could just put in "+" as the name, but that wouldn't
1936 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1937 char *o
= opname
+ 3;
1939 /* Skip past '::'. */
1942 STABS_CONTINUE (pp
);
1948 main_fn_name
= savestring (opname
, o
- opname
);
1954 main_fn_name
= savestring (*pp
, p
- *pp
);
1955 /* Skip past '::'. */
1958 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1963 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1964 make_cleanup (free
, new_sublist
);
1965 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1967 /* Check for and handle cretinous dbx symbol name continuation! */
1968 if (look_ahead_type
== NULL
)
1971 STABS_CONTINUE (pp
);
1973 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1976 /* Invalid symtab info for member function. */
1982 /* g++ version 1 kludge */
1983 new_sublist
-> fn_field
.type
= look_ahead_type
;
1984 look_ahead_type
= NULL
;
1994 /* If this is just a stub, then we don't have the real name here. */
1996 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1998 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1999 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2000 new_sublist
-> fn_field
.is_stub
= 1;
2002 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2005 /* Set this member function's visibility fields. */
2008 case VISIBILITY_PRIVATE
:
2009 new_sublist
-> fn_field
.is_private
= 1;
2011 case VISIBILITY_PROTECTED
:
2012 new_sublist
-> fn_field
.is_protected
= 1;
2016 STABS_CONTINUE (pp
);
2019 case 'A': /* Normal functions. */
2020 new_sublist
-> fn_field
.is_const
= 0;
2021 new_sublist
-> fn_field
.is_volatile
= 0;
2024 case 'B': /* `const' member functions. */
2025 new_sublist
-> fn_field
.is_const
= 1;
2026 new_sublist
-> fn_field
.is_volatile
= 0;
2029 case 'C': /* `volatile' member function. */
2030 new_sublist
-> fn_field
.is_const
= 0;
2031 new_sublist
-> fn_field
.is_volatile
= 1;
2034 case 'D': /* `const volatile' member function. */
2035 new_sublist
-> fn_field
.is_const
= 1;
2036 new_sublist
-> fn_field
.is_volatile
= 1;
2039 case '*': /* File compiled with g++ version 1 -- no info */
2044 complain (&const_vol_complaint
, **pp
);
2053 /* virtual member function, followed by index.
2054 The sign bit is set to distinguish pointers-to-methods
2055 from virtual function indicies. Since the array is
2056 in words, the quantity must be shifted left by 1
2057 on 16 bit machine, and by 2 on 32 bit machine, forcing
2058 the sign bit out, and usable as a valid index into
2059 the array. Remove the sign bit here. */
2060 new_sublist
-> fn_field
.voffset
=
2061 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2065 STABS_CONTINUE (pp
);
2066 if (**pp
== ';' || **pp
== '\0')
2068 /* Must be g++ version 1. */
2069 new_sublist
-> fn_field
.fcontext
= 0;
2073 /* Figure out from whence this virtual function came.
2074 It may belong to virtual function table of
2075 one of its baseclasses. */
2076 look_ahead_type
= read_type (pp
, objfile
);
2079 /* g++ version 1 overloaded methods. */
2083 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2092 look_ahead_type
= NULL
;
2098 /* static member function. */
2099 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2100 if (strncmp (new_sublist
-> fn_field
.physname
,
2101 main_fn_name
, strlen (main_fn_name
)))
2103 new_sublist
-> fn_field
.is_stub
= 1;
2109 complain (&member_fn_complaint
, (*pp
)[-1]);
2110 /* Fall through into normal member function. */
2113 /* normal member function. */
2114 new_sublist
-> fn_field
.voffset
= 0;
2115 new_sublist
-> fn_field
.fcontext
= 0;
2119 new_sublist
-> next
= sublist
;
2120 sublist
= new_sublist
;
2122 STABS_CONTINUE (pp
);
2124 while (**pp
!= ';' && **pp
!= '\0');
2128 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2129 obstack_alloc (&objfile
-> type_obstack
,
2130 sizeof (struct fn_field
) * length
);
2131 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2132 sizeof (struct fn_field
) * length
);
2133 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2135 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2138 new_fnlist
-> fn_fieldlist
.length
= length
;
2139 new_fnlist
-> next
= fip
-> fnlist
;
2140 fip
-> fnlist
= new_fnlist
;
2142 total_length
+= length
;
2143 STABS_CONTINUE (pp
);
2148 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2149 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2150 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2151 memset (TYPE_FN_FIELDLISTS (type
), 0,
2152 sizeof (struct fn_fieldlist
) * nfn_fields
);
2153 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2154 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2160 /* Special GNU C++ name.
2162 Returns 1 for success, 0 for failure. "failure" means that we can't
2163 keep parsing and it's time for error_type(). */
2166 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2167 struct field_info
*fip
;
2170 struct objfile
*objfile
;
2175 struct type
*context
;
2185 /* At this point, *pp points to something like "22:23=*22...",
2186 where the type number before the ':' is the "context" and
2187 everything after is a regular type definition. Lookup the
2188 type, find it's name, and construct the field name. */
2190 context
= read_type (pp
, objfile
);
2194 case 'f': /* $vf -- a virtual function table pointer */
2195 fip
->list
->field
.name
=
2196 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2199 case 'b': /* $vb -- a virtual bsomethingorother */
2200 name
= type_name_no_tag (context
);
2203 complain (&invalid_cpp_type_complaint
, symnum
);
2206 fip
->list
->field
.name
=
2207 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2211 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2212 fip
->list
->field
.name
=
2213 obconcat (&objfile
->type_obstack
,
2214 "INVALID_CPLUSPLUS_ABBREV", "", "");
2218 /* At this point, *pp points to the ':'. Skip it and read the
2224 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2227 fip
->list
->field
.type
= read_type (pp
, objfile
);
2229 (*pp
)++; /* Skip the comma. */
2235 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2239 /* This field is unpacked. */
2240 fip
->list
->field
.bitsize
= 0;
2241 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2245 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2246 /* We have no idea what syntax an unrecognized abbrev would have, so
2247 better return 0. If we returned 1, we would need to at least advance
2248 *pp to avoid an infinite loop. */
2255 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2256 struct field_info
*fip
;
2260 struct objfile
*objfile
;
2262 fip
-> list
-> field
.name
=
2263 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2266 /* This means we have a visibility for a field coming. */
2270 fip
-> list
-> visibility
= *(*pp
)++;
2274 /* normal dbx-style format, no explicit visibility */
2275 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2278 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2283 /* Possible future hook for nested types. */
2286 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2292 /* Static class member. */
2293 fip
-> list
-> field
.bitpos
= (long) -1;
2299 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2303 else if (**pp
!= ',')
2305 /* Bad structure-type format. */
2306 complain (&stabs_general_complaint
, "bad structure-type format");
2310 (*pp
)++; /* Skip the comma. */
2314 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2317 complain (&stabs_general_complaint
, "bad structure-type format");
2320 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2323 complain (&stabs_general_complaint
, "bad structure-type format");
2328 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2330 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2331 it is a field which has been optimized out. The correct stab for
2332 this case is to use VISIBILITY_IGNORE, but that is a recent
2333 invention. (2) It is a 0-size array. For example
2334 union { int num; char str[0]; } foo. Printing "<no value>" for
2335 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2336 will continue to work, and a 0-size array as a whole doesn't
2337 have any contents to print.
2339 I suspect this probably could also happen with gcc -gstabs (not
2340 -gstabs+) for static fields, and perhaps other C++ extensions.
2341 Hopefully few people use -gstabs with gdb, since it is intended
2342 for dbx compatibility. */
2344 /* Ignore this field. */
2345 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2349 /* Detect an unpacked field and mark it as such.
2350 dbx gives a bit size for all fields.
2351 Note that forward refs cannot be packed,
2352 and treat enums as if they had the width of ints. */
2354 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2355 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2357 fip
-> list
-> field
.bitsize
= 0;
2359 if ((fip
-> list
-> field
.bitsize
2360 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2361 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2362 && (fip
-> list
-> field
.bitsize
2367 fip
-> list
-> field
.bitpos
% 8 == 0)
2369 fip
-> list
-> field
.bitsize
= 0;
2375 /* Read struct or class data fields. They have the form:
2377 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2379 At the end, we see a semicolon instead of a field.
2381 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2384 The optional VISIBILITY is one of:
2386 '/0' (VISIBILITY_PRIVATE)
2387 '/1' (VISIBILITY_PROTECTED)
2388 '/2' (VISIBILITY_PUBLIC)
2389 '/9' (VISIBILITY_IGNORE)
2391 or nothing, for C style fields with public visibility.
2393 Returns 1 for success, 0 for failure. */
2396 read_struct_fields (fip
, pp
, type
, objfile
)
2397 struct field_info
*fip
;
2400 struct objfile
*objfile
;
2403 struct nextfield
*new;
2405 /* We better set p right now, in case there are no fields at all... */
2409 /* Read each data member type until we find the terminating ';' at the end of
2410 the data member list, or break for some other reason such as finding the
2411 start of the member function list. */
2415 STABS_CONTINUE (pp
);
2416 /* Get space to record the next field's data. */
2417 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2418 make_cleanup (free
, new);
2419 memset (new, 0, sizeof (struct nextfield
));
2420 new -> next
= fip
-> list
;
2423 /* Get the field name. */
2426 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2427 unless the CPLUS_MARKER is followed by an underscore, in
2428 which case it is just the name of an anonymous type, which we
2429 should handle like any other type name. We accept either '$'
2430 or '.', because a field name can never contain one of these
2431 characters except as a CPLUS_MARKER (we probably should be
2432 doing that in most parts of GDB). */
2434 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2436 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2441 /* Look for the ':' that separates the field name from the field
2442 values. Data members are delimited by a single ':', while member
2443 functions are delimited by a pair of ':'s. When we hit the member
2444 functions (if any), terminate scan loop and return. */
2446 while (*p
!= ':' && *p
!= '\0')
2453 /* Check to see if we have hit the member functions yet. */
2458 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2460 if (p
[0] == ':' && p
[1] == ':')
2462 /* chill the list of fields: the last entry (at the head) is a
2463 partially constructed entry which we now scrub. */
2464 fip
-> list
= fip
-> list
-> next
;
2469 /* The stabs for C++ derived classes contain baseclass information which
2470 is marked by a '!' character after the total size. This function is
2471 called when we encounter the baseclass marker, and slurps up all the
2472 baseclass information.
2474 Immediately following the '!' marker is the number of base classes that
2475 the class is derived from, followed by information for each base class.
2476 For each base class, there are two visibility specifiers, a bit offset
2477 to the base class information within the derived class, a reference to
2478 the type for the base class, and a terminating semicolon.
2480 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2482 Baseclass information marker __________________|| | | | | | |
2483 Number of baseclasses __________________________| | | | | | |
2484 Visibility specifiers (2) ________________________| | | | | |
2485 Offset in bits from start of class _________________| | | | |
2486 Type number for base class ___________________________| | | |
2487 Visibility specifiers (2) _______________________________| | |
2488 Offset in bits from start of class ________________________| |
2489 Type number of base class ____________________________________|
2491 Return 1 for success, 0 for (error-type-inducing) failure. */
2494 read_baseclasses (fip
, pp
, type
, objfile
)
2495 struct field_info
*fip
;
2498 struct objfile
*objfile
;
2501 struct nextfield
*new;
2509 /* Skip the '!' baseclass information marker. */
2513 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2516 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2522 /* Some stupid compilers have trouble with the following, so break
2523 it up into simpler expressions. */
2524 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2525 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2528 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2531 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2532 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2536 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2538 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2540 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2541 make_cleanup (free
, new);
2542 memset (new, 0, sizeof (struct nextfield
));
2543 new -> next
= fip
-> list
;
2545 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2547 STABS_CONTINUE (pp
);
2551 /* Nothing to do. */
2554 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2557 /* Unknown character. Complain and treat it as non-virtual. */
2559 static struct complaint msg
= {
2560 "Unknown virtual character `%c' for baseclass", 0, 0};
2561 complain (&msg
, **pp
);
2566 new -> visibility
= *(*pp
)++;
2567 switch (new -> visibility
)
2569 case VISIBILITY_PRIVATE
:
2570 case VISIBILITY_PROTECTED
:
2571 case VISIBILITY_PUBLIC
:
2574 /* Bad visibility format. Complain and treat it as
2577 static struct complaint msg
= {
2578 "Unknown visibility `%c' for baseclass", 0, 0};
2579 complain (&msg
, new -> visibility
);
2580 new -> visibility
= VISIBILITY_PUBLIC
;
2587 /* The remaining value is the bit offset of the portion of the object
2588 corresponding to this baseclass. Always zero in the absence of
2589 multiple inheritance. */
2591 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2596 /* The last piece of baseclass information is the type of the
2597 base class. Read it, and remember it's type name as this
2600 new -> field
.type
= read_type (pp
, objfile
);
2601 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2603 /* skip trailing ';' and bump count of number of fields seen */
2612 /* The tail end of stabs for C++ classes that contain a virtual function
2613 pointer contains a tilde, a %, and a type number.
2614 The type number refers to the base class (possibly this class itself) which
2615 contains the vtable pointer for the current class.
2617 This function is called when we have parsed all the method declarations,
2618 so we can look for the vptr base class info. */
2621 read_tilde_fields (fip
, pp
, type
, objfile
)
2622 struct field_info
*fip
;
2625 struct objfile
*objfile
;
2629 STABS_CONTINUE (pp
);
2631 /* If we are positioned at a ';', then skip it. */
2641 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2643 /* Obsolete flags that used to indicate the presence
2644 of constructors and/or destructors. */
2648 /* Read either a '%' or the final ';'. */
2649 if (*(*pp
)++ == '%')
2651 /* The next number is the type number of the base class
2652 (possibly our own class) which supplies the vtable for
2653 this class. Parse it out, and search that class to find
2654 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2655 and TYPE_VPTR_FIELDNO. */
2660 t
= read_type (pp
, objfile
);
2662 while (*p
!= '\0' && *p
!= ';')
2668 /* Premature end of symbol. */
2672 TYPE_VPTR_BASETYPE (type
) = t
;
2673 if (type
== t
) /* Our own class provides vtbl ptr */
2675 for (i
= TYPE_NFIELDS (t
) - 1;
2676 i
>= TYPE_N_BASECLASSES (t
);
2679 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2680 sizeof (vptr_name
) - 1))
2682 TYPE_VPTR_FIELDNO (type
) = i
;
2686 /* Virtual function table field not found. */
2687 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2692 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2703 attach_fn_fields_to_type (fip
, type
)
2704 struct field_info
*fip
;
2705 register struct type
*type
;
2709 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2711 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2713 /* @@ Memory leak on objfile -> type_obstack? */
2716 TYPE_NFN_FIELDS_TOTAL (type
) +=
2717 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2720 for (n
= TYPE_NFN_FIELDS (type
);
2721 fip
-> fnlist
!= NULL
;
2722 fip
-> fnlist
= fip
-> fnlist
-> next
)
2724 --n
; /* Circumvent Sun3 compiler bug */
2725 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2730 /* Create the vector of fields, and record how big it is.
2731 We need this info to record proper virtual function table information
2732 for this class's virtual functions. */
2735 attach_fields_to_type (fip
, type
, objfile
)
2736 struct field_info
*fip
;
2737 register struct type
*type
;
2738 struct objfile
*objfile
;
2740 register int nfields
= 0;
2741 register int non_public_fields
= 0;
2742 register struct nextfield
*scan
;
2744 /* Count up the number of fields that we have, as well as taking note of
2745 whether or not there are any non-public fields, which requires us to
2746 allocate and build the private_field_bits and protected_field_bits
2749 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2752 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2754 non_public_fields
++;
2758 /* Now we know how many fields there are, and whether or not there are any
2759 non-public fields. Record the field count, allocate space for the
2760 array of fields, and create blank visibility bitfields if necessary. */
2762 TYPE_NFIELDS (type
) = nfields
;
2763 TYPE_FIELDS (type
) = (struct field
*)
2764 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2765 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2767 if (non_public_fields
)
2769 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2771 TYPE_FIELD_PRIVATE_BITS (type
) =
2772 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2773 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2775 TYPE_FIELD_PROTECTED_BITS (type
) =
2776 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2777 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2779 TYPE_FIELD_IGNORE_BITS (type
) =
2780 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2781 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2784 /* Copy the saved-up fields into the field vector. Start from the head
2785 of the list, adding to the tail of the field array, so that they end
2786 up in the same order in the array in which they were added to the list. */
2788 while (nfields
-- > 0)
2790 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2791 switch (fip
-> list
-> visibility
)
2793 case VISIBILITY_PRIVATE
:
2794 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2797 case VISIBILITY_PROTECTED
:
2798 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2801 case VISIBILITY_IGNORE
:
2802 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2805 case VISIBILITY_PUBLIC
:
2809 /* Unknown visibility. Complain and treat it as public. */
2811 static struct complaint msg
= {
2812 "Unknown visibility `%c' for field", 0, 0};
2813 complain (&msg
, fip
-> list
-> visibility
);
2817 fip
-> list
= fip
-> list
-> next
;
2822 /* Read the description of a structure (or union type) and return an object
2823 describing the type.
2825 PP points to a character pointer that points to the next unconsumed token
2826 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2827 *PP will point to "4a:1,0,32;;".
2829 TYPE points to an incomplete type that needs to be filled in.
2831 OBJFILE points to the current objfile from which the stabs information is
2832 being read. (Note that it is redundant in that TYPE also contains a pointer
2833 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2836 static struct type
*
2837 read_struct_type (pp
, type
, objfile
)
2840 struct objfile
*objfile
;
2842 struct cleanup
*back_to
;
2843 struct field_info fi
;
2848 back_to
= make_cleanup (null_cleanup
, 0);
2850 INIT_CPLUS_SPECIFIC (type
);
2851 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2853 /* First comes the total size in bytes. */
2857 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2859 return error_type (pp
);
2862 /* Now read the baseclasses, if any, read the regular C struct or C++
2863 class member fields, attach the fields to the type, read the C++
2864 member functions, attach them to the type, and then read any tilde
2865 field (baseclass specifier for the class holding the main vtable). */
2867 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2868 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2869 || !attach_fields_to_type (&fi
, type
, objfile
)
2870 || !read_member_functions (&fi
, pp
, type
, objfile
)
2871 || !attach_fn_fields_to_type (&fi
, type
)
2872 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2874 do_cleanups (back_to
);
2875 return (error_type (pp
));
2878 do_cleanups (back_to
);
2882 /* Read a definition of an array type,
2883 and create and return a suitable type object.
2884 Also creates a range type which represents the bounds of that
2887 static struct type
*
2888 read_array_type (pp
, type
, objfile
)
2890 register struct type
*type
;
2891 struct objfile
*objfile
;
2893 struct type
*index_type
, *element_type
, *range_type
;
2898 /* Format of an array type:
2899 "ar<index type>;lower;upper;<array_contents_type>".
2900 OS9000: "arlower,upper;<array_contents_type>".
2902 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2903 for these, produce a type like float[][]. */
2906 index_type
= builtin_type_int
;
2909 index_type
= read_type (pp
, objfile
);
2911 /* Improper format of array type decl. */
2912 return error_type (pp
);
2916 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2921 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
2923 return error_type (pp
);
2925 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2930 upper
= read_huge_number (pp
, ';', &nbits
);
2932 return error_type (pp
);
2934 element_type
= read_type (pp
, objfile
);
2943 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2944 type
= create_array_type (type
, element_type
, range_type
);
2946 /* If we have an array whose element type is not yet known, but whose
2947 bounds *are* known, record it to be adjusted at the end of the file. */
2948 /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
2949 the two have the same effect except that the latter is cleaner and the
2950 former would be wrong for types which really are zero-length (if we
2953 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2955 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2956 add_undefined_type (type
);
2963 /* Read a definition of an enumeration type,
2964 and create and return a suitable type object.
2965 Also defines the symbols that represent the values of the type. */
2967 static struct type
*
2968 read_enum_type (pp
, type
, objfile
)
2970 register struct type
*type
;
2971 struct objfile
*objfile
;
2976 register struct symbol
*sym
;
2978 struct pending
**symlist
;
2979 struct pending
*osyms
, *syms
;
2984 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2985 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2986 to do? For now, force all enum values to file scope. */
2987 if (within_function
)
2988 symlist
= &local_symbols
;
2991 symlist
= &file_symbols
;
2993 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2997 /* Size. Perhaps this does not have to be conditionalized on
2998 os9k_stabs (assuming the name of an enum constant can't start
3000 read_huge_number (pp
, 0, &nbits
);
3002 return error_type (pp
);
3005 /* Read the value-names and their values.
3006 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3007 A semicolon or comma instead of a NAME means the end. */
3008 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3010 STABS_CONTINUE (pp
);
3012 while (*p
!= ':') p
++;
3013 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3015 n
= read_huge_number (pp
, ',', &nbits
);
3017 return error_type (pp
);
3019 sym
= (struct symbol
*)
3020 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3021 memset (sym
, 0, sizeof (struct symbol
));
3022 SYMBOL_NAME (sym
) = name
;
3023 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3024 SYMBOL_CLASS (sym
) = LOC_CONST
;
3025 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3026 SYMBOL_VALUE (sym
) = n
;
3027 add_symbol_to_list (sym
, symlist
);
3032 (*pp
)++; /* Skip the semicolon. */
3034 /* Now fill in the fields of the type-structure. */
3036 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3037 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3038 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3039 TYPE_NFIELDS (type
) = nsyms
;
3040 TYPE_FIELDS (type
) = (struct field
*)
3041 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3042 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3044 /* Find the symbols for the values and put them into the type.
3045 The symbols can be found in the symlist that we put them on
3046 to cause them to be defined. osyms contains the old value
3047 of that symlist; everything up to there was defined by us. */
3048 /* Note that we preserve the order of the enum constants, so
3049 that in something like "enum {FOO, LAST_THING=FOO}" we print
3050 FOO, not LAST_THING. */
3052 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
3057 for (; j
< syms
->nsyms
; j
++,n
++)
3059 struct symbol
*xsym
= syms
->symbol
[j
];
3060 SYMBOL_TYPE (xsym
) = type
;
3061 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3062 TYPE_FIELD_VALUE (type
, n
) = 0;
3063 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3064 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3073 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3074 typedefs in every file (for int, long, etc):
3076 type = b <signed> <width>; <offset>; <nbits>
3077 signed = u or s. Possible c in addition to u or s (for char?).
3078 offset = offset from high order bit to start bit of type.
3079 width is # bytes in object of this type, nbits is # bits in type.
3081 The width/offset stuff appears to be for small objects stored in
3082 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3085 static struct type
*
3086 read_sun_builtin_type (pp
, typenums
, objfile
)
3089 struct objfile
*objfile
;
3104 return error_type (pp
);
3108 /* For some odd reason, all forms of char put a c here. This is strange
3109 because no other type has this honor. We can safely ignore this because
3110 we actually determine 'char'acterness by the number of bits specified in
3116 /* The first number appears to be the number of bytes occupied
3117 by this type, except that unsigned short is 4 instead of 2.
3118 Since this information is redundant with the third number,
3119 we will ignore it. */
3120 read_huge_number (pp
, ';', &nbits
);
3122 return error_type (pp
);
3124 /* The second number is always 0, so ignore it too. */
3125 read_huge_number (pp
, ';', &nbits
);
3127 return error_type (pp
);
3129 /* The third number is the number of bits for this type. */
3130 type_bits
= read_huge_number (pp
, 0, &nbits
);
3132 return error_type (pp
);
3133 /* The type *should* end with a semicolon. If it are embedded
3134 in a larger type the semicolon may be the only way to know where
3135 the type ends. If this type is at the end of the stabstring we
3136 can deal with the omitted semicolon (but we don't have to like
3137 it). Don't bother to complain(), Sun's compiler omits the semicolon
3142 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3143 type_bits
/ TARGET_CHAR_BIT
,
3144 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3148 static struct type
*
3149 read_sun_floating_type (pp
, typenums
, objfile
)
3152 struct objfile
*objfile
;
3158 /* The first number has more details about the type, for example
3160 details
= read_huge_number (pp
, ';', &nbits
);
3162 return error_type (pp
);
3164 /* The second number is the number of bytes occupied by this type */
3165 nbytes
= read_huge_number (pp
, ';', &nbits
);
3167 return error_type (pp
);
3169 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3170 || details
== NF_COMPLEX32
)
3171 /* This is a type we can't handle, but we do know the size.
3172 We also will be able to give it a name. */
3173 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3175 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3178 /* Read a number from the string pointed to by *PP.
3179 The value of *PP is advanced over the number.
3180 If END is nonzero, the character that ends the
3181 number must match END, or an error happens;
3182 and that character is skipped if it does match.
3183 If END is zero, *PP is left pointing to that character.
3185 If the number fits in a long, set *BITS to 0 and return the value.
3186 If not, set *BITS to be the number of bits in the number and return 0.
3188 If encounter garbage, set *BITS to -1 and return 0. */
3191 read_huge_number (pp
, end
, bits
)
3211 /* Leading zero means octal. GCC uses this to output values larger
3212 than an int (because that would be hard in decimal). */
3219 upper_limit
= LONG_MAX
/ radix
;
3220 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3222 if (n
<= upper_limit
)
3225 n
+= c
- '0'; /* FIXME this overflows anyway */
3230 /* This depends on large values being output in octal, which is
3237 /* Ignore leading zeroes. */
3241 else if (c
== '2' || c
== '3')
3267 /* Large decimal constants are an error (because it is hard to
3268 count how many bits are in them). */
3274 /* -0x7f is the same as 0x80. So deal with it by adding one to
3275 the number of bits. */
3287 /* It's *BITS which has the interesting information. */
3291 static struct type
*
3292 read_range_type (pp
, typenums
, objfile
)
3295 struct objfile
*objfile
;
3301 struct type
*result_type
;
3302 struct type
*index_type
;
3304 /* First comes a type we are a subrange of.
3305 In C it is usually 0, 1 or the type being defined. */
3306 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3307 not just a type number. */
3308 if (read_type_number (pp
, rangenums
) != 0)
3309 return error_type (pp
);
3310 self_subrange
= (rangenums
[0] == typenums
[0] &&
3311 rangenums
[1] == typenums
[1]);
3313 /* A semicolon should now follow; skip it. */
3317 /* The remaining two operands are usually lower and upper bounds
3318 of the range. But in some special cases they mean something else. */
3319 n2
= read_huge_number (pp
, ';', &n2bits
);
3320 n3
= read_huge_number (pp
, ';', &n3bits
);
3322 if (n2bits
== -1 || n3bits
== -1)
3323 return error_type (pp
);
3325 /* If limits are huge, must be large integral type. */
3326 if (n2bits
!= 0 || n3bits
!= 0)
3328 char got_signed
= 0;
3329 char got_unsigned
= 0;
3330 /* Number of bits in the type. */
3333 /* Range from 0 to <large number> is an unsigned large integral type. */
3334 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3339 /* Range from <large number> to <large number>-1 is a large signed
3340 integral type. Take care of the case where <large number> doesn't
3341 fit in a long but <large number>-1 does. */
3342 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3343 || (n2bits
!= 0 && n3bits
== 0
3344 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3351 if (got_signed
|| got_unsigned
)
3353 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3354 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3358 return error_type (pp
);
3361 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3362 if (self_subrange
&& n2
== 0 && n3
== 0)
3363 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3365 /* If n3 is zero and n2 is not, we want a floating type,
3366 and n2 is the width in bytes.
3368 Fortran programs appear to use this for complex types also,
3369 and they give no way to distinguish between double and single-complex!
3371 GDB does not have complex types.
3373 Just return the complex as a float of that size. It won't work right
3374 for the complex values, but at least it makes the file loadable. */
3376 if (n3
== 0 && n2
> 0)
3378 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3381 /* If the upper bound is -1, it must really be an unsigned int. */
3383 else if (n2
== 0 && n3
== -1)
3385 /* It is unsigned int or unsigned long. */
3386 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3387 compatibility hack. */
3388 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3389 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3392 /* Special case: char is defined (Who knows why) as a subrange of
3393 itself with range 0-127. */
3394 else if (self_subrange
&& n2
== 0 && n3
== 127)
3395 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3397 /* We used to do this only for subrange of self or subrange of int. */
3401 /* n3 actually gives the size. */
3402 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3405 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3407 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3409 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3410 "unsigned long", and we already checked for that,
3411 so don't need to test for it here. */
3413 /* I think this is for Convex "long long". Since I don't know whether
3414 Convex sets self_subrange, I also accept that particular size regardless
3415 of self_subrange. */
3416 else if (n3
== 0 && n2
< 0
3418 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3419 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3420 else if (n2
== -n3
-1)
3423 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3425 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3426 if (n3
== 0x7fffffff)
3427 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3430 /* We have a real range type on our hands. Allocate space and
3431 return a real pointer. */
3433 /* At this point I don't have the faintest idea how to deal with
3434 a self_subrange type; I'm going to assume that this is used
3435 as an idiom, and that all of them are special cases. So . . . */
3437 return error_type (pp
);
3439 index_type
= *dbx_lookup_type (rangenums
);
3440 if (index_type
== NULL
)
3442 /* Does this actually ever happen? Is that why we are worrying
3443 about dealing with it rather than just calling error_type? */
3445 static struct type
*range_type_index
;
3447 complain (&range_type_base_complaint
, rangenums
[1]);
3448 if (range_type_index
== NULL
)
3450 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3451 0, "range type index type", NULL
);
3452 index_type
= range_type_index
;
3455 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3456 return (result_type
);
3459 /* Read in an argument list. This is a list of types, separated by commas
3460 and terminated with END. Return the list of types read in, or (struct type
3461 **)-1 if there is an error. */
3463 static struct type
**
3464 read_args (pp
, end
, objfile
)
3467 struct objfile
*objfile
;
3469 /* FIXME! Remove this arbitrary limit! */
3470 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3476 /* Invalid argument list: no ','. */
3477 return (struct type
**)-1;
3479 STABS_CONTINUE (pp
);
3480 types
[n
++] = read_type (pp
, objfile
);
3482 (*pp
)++; /* get past `end' (the ':' character) */
3486 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3488 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3490 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3491 memset (rval
+ n
, 0, sizeof (struct type
*));
3495 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3497 memcpy (rval
, types
, n
* sizeof (struct type
*));
3501 /* Common block handling. */
3503 /* List of symbols declared since the last BCOMM. This list is a tail
3504 of local_symbols. When ECOMM is seen, the symbols on the list
3505 are noted so their proper addresses can be filled in later,
3506 using the common block base address gotten from the assembler
3509 static struct pending
*common_block
;
3510 static int common_block_i
;
3512 /* Name of the current common block. We get it from the BCOMM instead of the
3513 ECOMM to match IBM documentation (even though IBM puts the name both places
3514 like everyone else). */
3515 static char *common_block_name
;
3517 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3518 to remain after this function returns. */
3521 common_block_start (name
, objfile
)
3523 struct objfile
*objfile
;
3525 if (common_block_name
!= NULL
)
3527 static struct complaint msg
= {
3528 "Invalid symbol data: common block within common block",
3532 common_block
= local_symbols
;
3533 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3534 common_block_name
= obsavestring (name
, strlen (name
),
3535 &objfile
-> symbol_obstack
);
3538 /* Process a N_ECOMM symbol. */
3541 common_block_end (objfile
)
3542 struct objfile
*objfile
;
3544 /* Symbols declared since the BCOMM are to have the common block
3545 start address added in when we know it. common_block and
3546 common_block_i point to the first symbol after the BCOMM in
3547 the local_symbols list; copy the list and hang it off the
3548 symbol for the common block name for later fixup. */
3551 struct pending
*new = 0;
3552 struct pending
*next
;
3555 if (common_block_name
== NULL
)
3557 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3562 sym
= (struct symbol
*)
3563 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3564 memset (sym
, 0, sizeof (struct symbol
));
3565 SYMBOL_NAME (sym
) = common_block_name
;
3566 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3568 /* Now we copy all the symbols which have been defined since the BCOMM. */
3570 /* Copy all the struct pendings before common_block. */
3571 for (next
= local_symbols
;
3572 next
!= NULL
&& next
!= common_block
;
3575 for (j
= 0; j
< next
->nsyms
; j
++)
3576 add_symbol_to_list (next
->symbol
[j
], &new);
3579 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3580 NULL, it means copy all the local symbols (which we already did
3583 if (common_block
!= NULL
)
3584 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3585 add_symbol_to_list (common_block
->symbol
[j
], &new);
3587 SYMBOL_TYPE (sym
) = (struct type
*) new;
3589 /* Should we be putting local_symbols back to what it was?
3592 i
= hashname (SYMBOL_NAME (sym
));
3593 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3594 global_sym_chain
[i
] = sym
;
3595 common_block_name
= NULL
;
3598 /* Add a common block's start address to the offset of each symbol
3599 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3600 the common block name). */
3603 fix_common_block (sym
, valu
)
3607 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3608 for ( ; next
; next
= next
->next
)
3611 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3612 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3618 /* What about types defined as forward references inside of a small lexical
3620 /* Add a type to the list of undefined types to be checked through
3621 once this file has been read in. */
3624 add_undefined_type (type
)
3627 if (undef_types_length
== undef_types_allocated
)
3629 undef_types_allocated
*= 2;
3630 undef_types
= (struct type
**)
3631 xrealloc ((char *) undef_types
,
3632 undef_types_allocated
* sizeof (struct type
*));
3634 undef_types
[undef_types_length
++] = type
;
3637 /* Go through each undefined type, see if it's still undefined, and fix it
3638 up if possible. We have two kinds of undefined types:
3640 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3641 Fix: update array length using the element bounds
3642 and the target type's length.
3643 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3644 yet defined at the time a pointer to it was made.
3645 Fix: Do a full lookup on the struct/union tag. */
3647 cleanup_undefined_types ()
3651 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3653 switch (TYPE_CODE (*type
))
3656 case TYPE_CODE_STRUCT
:
3657 case TYPE_CODE_UNION
:
3658 case TYPE_CODE_ENUM
:
3660 /* Check if it has been defined since. Need to do this here
3661 as well as in check_stub_type to deal with the (legitimate in
3662 C though not C++) case of several types with the same name
3663 in different source files. */
3664 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3666 struct pending
*ppt
;
3668 /* Name of the type, without "struct" or "union" */
3669 char *typename
= TYPE_TAG_NAME (*type
);
3671 if (typename
== NULL
)
3673 static struct complaint msg
= {"need a type name", 0, 0};
3677 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3679 for (i
= 0; i
< ppt
->nsyms
; i
++)
3681 struct symbol
*sym
= ppt
->symbol
[i
];
3683 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3684 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3685 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3687 && STREQ (SYMBOL_NAME (sym
), typename
))
3689 memcpy (*type
, SYMBOL_TYPE (sym
),
3690 sizeof (struct type
));
3698 case TYPE_CODE_ARRAY
:
3700 /* This is a kludge which is here for historical reasons
3701 because I suspect that check_stub_type does not get
3702 called everywhere it needs to be called for arrays. Even
3703 with this kludge, those places are broken for the case
3704 where the stub type is defined in another compilation
3705 unit, but this kludge at least deals with it for the case
3706 in which it is the same compilation unit.
3708 Don't try to do this by calling check_stub_type; it might
3709 cause symbols to be read in lookup_symbol, and the symbol
3710 reader is not reentrant. */
3712 struct type
*range_type
;
3715 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3717 if (TYPE_NFIELDS (*type
) != 1)
3719 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3720 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3723 /* Now recompute the length of the array type, based on its
3724 number of elements and the target type's length. */
3725 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3726 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3727 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3728 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3730 /* If the target type is not a stub, we could be clearing
3731 TYPE_FLAG_TARGET_STUB for *type. */
3738 static struct complaint msg
= {"\
3739 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3740 complain (&msg
, TYPE_CODE (*type
));
3746 undef_types_length
= 0;
3749 /* Scan through all of the global symbols defined in the object file,
3750 assigning values to the debugging symbols that need to be assigned
3751 to. Get these symbols from the minimal symbol table. */
3754 scan_file_globals (objfile
)
3755 struct objfile
*objfile
;
3758 struct minimal_symbol
*msymbol
;
3759 struct symbol
*sym
, *prev
;
3761 if (objfile
->msymbols
== 0) /* Beware the null file. */
3764 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3770 /* Get the hash index and check all the symbols
3771 under that hash index. */
3773 hash
= hashname (SYMBOL_NAME (msymbol
));
3775 for (sym
= global_sym_chain
[hash
]; sym
;)
3777 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3778 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3780 /* Splice this symbol out of the hash chain and
3781 assign the value we have to it. */
3784 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3788 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3791 /* Check to see whether we need to fix up a common block. */
3792 /* Note: this code might be executed several times for
3793 the same symbol if there are multiple references. */
3795 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3797 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3801 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3806 sym
= SYMBOL_VALUE_CHAIN (prev
);
3810 sym
= global_sym_chain
[hash
];
3816 sym
= SYMBOL_VALUE_CHAIN (sym
);
3822 /* Initialize anything that needs initializing when starting to read
3823 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3831 /* Initialize anything that needs initializing when a completely new
3832 symbol file is specified (not just adding some symbols from another
3833 file, e.g. a shared library). */
3836 stabsread_new_init ()
3838 /* Empty the hash table of global syms looking for values. */
3839 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3842 /* Initialize anything that needs initializing at the same time as
3843 start_symtab() is called. */
3847 global_stabs
= NULL
; /* AIX COFF */
3848 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3849 n_this_object_header_files
= 1;
3850 type_vector_length
= 0;
3851 type_vector
= (struct type
**) 0;
3853 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3854 common_block_name
= NULL
;
3859 /* Call after end_symtab() */
3865 free ((char *) type_vector
);
3868 type_vector_length
= 0;
3869 previous_stab_code
= 0;
3873 finish_global_stabs (objfile
)
3874 struct objfile
*objfile
;
3878 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3879 free ((PTR
) global_stabs
);
3880 global_stabs
= NULL
;
3884 /* Initializer for this module */
3887 _initialize_stabsread ()
3889 undef_types_allocated
= 20;
3890 undef_types_length
= 0;
3891 undef_types
= (struct type
**)
3892 xmalloc (undef_types_allocated
* sizeof (struct type
*));