1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
34 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
36 #include "complaints.h"
41 /* Ask stabsread.h to define the vars it normally declares `extern'. */
43 #include "stabsread.h" /* Our own declarations */
46 /* The routines that read and process a complete stabs for a C struct or
47 C++ class pass lists of data member fields and lists of member function
48 fields in an instance of a field_info structure, as defined below.
49 This is part of some reorganization of low level C++ support and is
50 expected to eventually go away... (FIXME) */
56 struct nextfield
*next
;
58 /* This is the raw visibility from the stab. It is not checked
59 for being one of the visibilities we recognize, so code which
60 examines this field better be able to deal. */
65 struct next_fnfieldlist
67 struct next_fnfieldlist
*next
;
68 struct fn_fieldlist fn_fieldlist
;
73 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
75 static long read_huge_number
PARAMS ((char **, int, int *));
77 static struct type
*error_type
PARAMS ((char **));
80 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
84 fix_common_block
PARAMS ((struct symbol
*, int));
87 read_type_number
PARAMS ((char **, int *));
90 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
93 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
96 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
99 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
102 rs6000_builtin_type
PARAMS ((int));
105 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
109 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
113 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
117 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
121 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
124 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
128 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
131 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
133 static struct type
**
134 read_args
PARAMS ((char **, int, struct objfile
*));
137 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
140 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
141 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
143 /* Define this as 1 if a pcc declaration of a char or short argument
144 gives the correct address. Otherwise assume pcc gives the
145 address of the corresponding int, which is not the same on a
146 big-endian machine. */
148 #ifndef BELIEVE_PCC_PROMOTION
149 #define BELIEVE_PCC_PROMOTION 0
152 struct complaint invalid_cpp_abbrev_complaint
=
153 {"invalid C++ abbreviation `%s'", 0, 0};
155 struct complaint invalid_cpp_type_complaint
=
156 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
158 struct complaint member_fn_complaint
=
159 {"member function type missing, got '%c'", 0, 0};
161 struct complaint const_vol_complaint
=
162 {"const/volatile indicator missing, got '%c'", 0, 0};
164 struct complaint error_type_complaint
=
165 {"debug info mismatch between compiler and debugger", 0, 0};
167 struct complaint invalid_member_complaint
=
168 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
170 struct complaint range_type_base_complaint
=
171 {"base type %d of range type is not defined", 0, 0};
173 struct complaint reg_value_complaint
=
174 {"register number too large in symbol %s", 0, 0};
176 struct complaint vtbl_notfound_complaint
=
177 {"virtual function table pointer not found when defining class `%s'", 0, 0};
179 struct complaint unrecognized_cplus_name_complaint
=
180 {"Unknown C++ symbol name `%s'", 0, 0};
182 struct complaint rs6000_builtin_complaint
=
183 {"Unknown builtin type %d", 0, 0};
185 struct complaint stabs_general_complaint
=
188 /* Make a list of forward references which haven't been defined. */
190 static struct type
**undef_types
;
191 static int undef_types_allocated
;
192 static int undef_types_length
;
194 /* Check for and handle cretinous stabs symbol name continuation! */
195 #define STABS_CONTINUE(pp) \
197 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
198 *(pp) = next_symbol_text (); \
202 /* Look up a dbx type-number pair. Return the address of the slot
203 where the type for that number-pair is stored.
204 The number-pair is in TYPENUMS.
206 This can be used for finding the type associated with that pair
207 or for associating a new type with the pair. */
210 dbx_lookup_type (typenums
)
213 register int filenum
= typenums
[0];
214 register int index
= typenums
[1];
216 register int real_filenum
;
217 register struct header_file
*f
;
220 if (filenum
== -1) /* -1,-1 is for temporary types. */
223 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
225 static struct complaint msg
= {"\
226 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
228 complain (&msg
, filenum
, index
, symnum
);
236 /* Caller wants address of address of type. We think
237 that negative (rs6k builtin) types will never appear as
238 "lvalues", (nor should they), so we stuff the real type
239 pointer into a temp, and return its address. If referenced,
240 this will do the right thing. */
241 static struct type
*temp_type
;
243 temp_type
= rs6000_builtin_type(index
);
247 /* Type is defined outside of header files.
248 Find it in this object file's type vector. */
249 if (index
>= type_vector_length
)
251 old_len
= type_vector_length
;
254 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
255 type_vector
= (struct type
**)
256 malloc (type_vector_length
* sizeof (struct type
*));
258 while (index
>= type_vector_length
)
260 type_vector_length
*= 2;
262 type_vector
= (struct type
**)
263 xrealloc ((char *) type_vector
,
264 (type_vector_length
* sizeof (struct type
*)));
265 memset (&type_vector
[old_len
], 0,
266 (type_vector_length
- old_len
) * sizeof (struct type
*));
268 return (&type_vector
[index
]);
272 real_filenum
= this_object_header_files
[filenum
];
274 if (real_filenum
>= n_header_files
)
276 struct type
*temp_type
;
277 struct type
**temp_type_p
;
279 warning ("GDB internal error: bad real_filenum");
282 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
283 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
284 *temp_type_p
= temp_type
;
288 f
= &header_files
[real_filenum
];
290 f_orig_length
= f
->length
;
291 if (index
>= f_orig_length
)
293 while (index
>= f
->length
)
297 f
->vector
= (struct type
**)
298 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
299 memset (&f
->vector
[f_orig_length
], 0,
300 (f
->length
- f_orig_length
) * sizeof (struct type
*));
302 return (&f
->vector
[index
]);
306 /* Make sure there is a type allocated for type numbers TYPENUMS
307 and return the type object.
308 This can create an empty (zeroed) type object.
309 TYPENUMS may be (-1, -1) to return a new type object that is not
310 put into the type vector, and so may not be referred to by number. */
313 dbx_alloc_type (typenums
, objfile
)
315 struct objfile
*objfile
;
317 register struct type
**type_addr
;
319 if (typenums
[0] == -1)
321 return (alloc_type (objfile
));
324 type_addr
= dbx_lookup_type (typenums
);
326 /* If we are referring to a type not known at all yet,
327 allocate an empty type for it.
328 We will fill it in later if we find out how. */
331 *type_addr
= alloc_type (objfile
);
337 /* for all the stabs in a given stab vector, build appropriate types
338 and fix their symbols in given symbol vector. */
341 patch_block_stabs (symbols
, stabs
, objfile
)
342 struct pending
*symbols
;
343 struct pending_stabs
*stabs
;
344 struct objfile
*objfile
;
354 /* for all the stab entries, find their corresponding symbols and
355 patch their types! */
357 for (ii
= 0; ii
< stabs
->count
; ++ii
)
359 name
= stabs
->stab
[ii
];
360 pp
= (char*) strchr (name
, ':');
364 pp
= (char *)strchr(pp
, ':');
366 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
369 /* On xcoff, if a global is defined and never referenced,
370 ld will remove it from the executable. There is then
371 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
372 sym
= (struct symbol
*)
373 obstack_alloc (&objfile
->symbol_obstack
,
374 sizeof (struct symbol
));
376 memset (sym
, 0, sizeof (struct symbol
));
377 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
378 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
380 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
382 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
384 /* I don't think the linker does this with functions,
385 so as far as I know this is never executed.
386 But it doesn't hurt to check. */
388 lookup_function_type (read_type (&pp
, objfile
));
392 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
394 add_symbol_to_list (sym
, &global_symbols
);
399 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
402 lookup_function_type (read_type (&pp
, objfile
));
406 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
414 /* Read a number by which a type is referred to in dbx data,
415 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
416 Just a single number N is equivalent to (0,N).
417 Return the two numbers by storing them in the vector TYPENUMS.
418 TYPENUMS will then be used as an argument to dbx_lookup_type.
420 Returns 0 for success, -1 for error. */
423 read_type_number (pp
, typenums
)
425 register int *typenums
;
431 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
432 if (nbits
!= 0) return -1;
433 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
434 if (nbits
!= 0) return -1;
439 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
440 if (nbits
!= 0) return -1;
446 /* To handle GNU C++ typename abbreviation, we need to be able to
447 fill in a type's name as soon as space for that type is allocated.
448 `type_synonym_name' is the name of the type being allocated.
449 It is cleared as soon as it is used (lest all allocated types
452 static char *type_synonym_name
;
454 #if !defined (REG_STRUCT_HAS_ADDR)
455 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
460 define_symbol (valu
, string
, desc
, type
, objfile
)
465 struct objfile
*objfile
;
467 register struct symbol
*sym
;
468 char *p
= (char *) strchr (string
, ':');
473 /* We would like to eliminate nameless symbols, but keep their types.
474 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
475 to type 2, but, should not create a symbol to address that type. Since
476 the symbol will be nameless, there is no way any user can refer to it. */
480 /* Ignore syms with empty names. */
484 /* Ignore old-style symbols from cc -go */
494 /* If a nameless stab entry, all we need is the type, not the symbol.
495 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
496 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
498 sym
= (struct symbol
*)
499 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
500 memset (sym
, 0, sizeof (struct symbol
));
502 if (processing_gcc_compilation
)
504 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
505 number of bytes occupied by a type or object, which we ignore. */
506 SYMBOL_LINE(sym
) = desc
;
510 SYMBOL_LINE(sym
) = 0; /* unknown */
513 if (string
[0] == CPLUS_MARKER
)
515 /* Special GNU C++ names. */
519 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
520 &objfile
-> symbol_obstack
);
523 case 'v': /* $vtbl_ptr_type */
524 /* Was: SYMBOL_NAME (sym) = "vptr"; */
528 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
529 &objfile
-> symbol_obstack
);
533 /* This was an anonymous type that was never fixed up. */
537 complain (&unrecognized_cplus_name_complaint
, string
);
538 goto normal
; /* Do *something* with it */
544 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
545 SYMBOL_NAME (sym
) = (char *)
546 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
547 /* Open-coded memcpy--saves function call time. */
548 /* FIXME: Does it really? Try replacing with simple strcpy and
549 try it on an executable with a large symbol table. */
550 /* FIXME: considering that gcc can open code memcpy anyway, I
551 doubt it. xoxorich. */
553 register char *p1
= string
;
554 register char *p2
= SYMBOL_NAME (sym
);
562 /* If this symbol is from a C++ compilation, then attempt to cache the
563 demangled form for future reference. This is a typical time versus
564 space tradeoff, that was decided in favor of time because it sped up
565 C++ symbol lookups by a factor of about 20. */
567 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
571 /* Determine the type of name being defined. */
573 /* Getting GDB to correctly skip the symbol on an undefined symbol
574 descriptor and not ever dump core is a very dodgy proposition if
575 we do things this way. I say the acorn RISC machine can just
576 fix their compiler. */
577 /* The Acorn RISC machine's compiler can put out locals that don't
578 start with "234=" or "(3,4)=", so assume anything other than the
579 deftypes we know how to handle is a local. */
580 if (!strchr ("cfFGpPrStTvVXCR", *p
))
582 if (isdigit (*p
) || *p
== '(' || *p
== '-')
591 /* c is a special case, not followed by a type-number.
592 SYMBOL:c=iVALUE for an integer constant symbol.
593 SYMBOL:c=rVALUE for a floating constant symbol.
594 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
595 e.g. "b:c=e6,0" for "const b = blob1"
596 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
599 SYMBOL_CLASS (sym
) = LOC_CONST
;
600 SYMBOL_TYPE (sym
) = error_type (&p
);
601 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
602 add_symbol_to_list (sym
, &file_symbols
);
613 /* FIXME-if-picky-about-floating-accuracy: Should be using
614 target arithmetic to get the value. real.c in GCC
615 probably has the necessary code. */
617 /* FIXME: lookup_fundamental_type is a hack. We should be
618 creating a type especially for the type of float constants.
619 Problem is, what type should it be?
621 Also, what should the name of this type be? Should we
622 be using 'S' constants (see stabs.texinfo) instead? */
624 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
627 obstack_alloc (&objfile
-> symbol_obstack
,
628 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
629 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
630 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
631 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
636 /* Defining integer constants this way is kind of silly,
637 since 'e' constants allows the compiler to give not
638 only the value, but the type as well. C has at least
639 int, long, unsigned int, and long long as constant
640 types; other languages probably should have at least
641 unsigned as well as signed constants. */
643 /* We just need one int constant type for all objfiles.
644 It doesn't depend on languages or anything (arguably its
645 name should be a language-specific name for a type of
646 that size, but I'm inclined to say that if the compiler
647 wants a nice name for the type, it can use 'e'). */
648 static struct type
*int_const_type
;
650 /* Yes, this is as long as a *host* int. That is because we
652 if (int_const_type
== NULL
)
654 init_type (TYPE_CODE_INT
,
655 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
657 (struct objfile
*)NULL
);
658 SYMBOL_TYPE (sym
) = int_const_type
;
659 SYMBOL_VALUE (sym
) = atoi (p
);
660 SYMBOL_CLASS (sym
) = LOC_CONST
;
664 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
665 can be represented as integral.
666 e.g. "b:c=e6,0" for "const b = blob1"
667 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
669 SYMBOL_CLASS (sym
) = LOC_CONST
;
670 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
674 SYMBOL_TYPE (sym
) = error_type (&p
);
679 /* If the value is too big to fit in an int (perhaps because
680 it is unsigned), or something like that, we silently get
681 a bogus value. The type and everything else about it is
682 correct. Ideally, we should be using whatever we have
683 available for parsing unsigned and long long values,
685 SYMBOL_VALUE (sym
) = atoi (p
);
690 SYMBOL_CLASS (sym
) = LOC_CONST
;
691 SYMBOL_TYPE (sym
) = error_type (&p
);
694 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
695 add_symbol_to_list (sym
, &file_symbols
);
699 /* The name of a caught exception. */
700 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
701 SYMBOL_CLASS (sym
) = LOC_LABEL
;
702 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
703 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
704 add_symbol_to_list (sym
, &local_symbols
);
708 /* A static function definition. */
709 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
710 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
711 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
712 add_symbol_to_list (sym
, &file_symbols
);
713 /* fall into process_function_types. */
715 process_function_types
:
716 /* Function result types are described as the result type in stabs.
717 We need to convert this to the function-returning-type-X type
718 in GDB. E.g. "int" is converted to "function returning int". */
719 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
722 /* This code doesn't work -- it needs to realloc and can't. */
723 /* Attempt to set up to record a function prototype... */
724 struct type
*new = alloc_type (objfile
);
726 /* Generate a template for the type of this function. The
727 types of the arguments will be added as we read the symbol
729 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
730 SYMBOL_TYPE(sym
) = new;
731 TYPE_OBJFILE (new) = objfile
;
732 in_function_type
= new;
734 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
737 /* fall into process_prototype_types */
739 process_prototype_types
:
740 /* Sun acc puts declared types of arguments here. We don't care
741 about their actual types (FIXME -- we should remember the whole
742 function prototype), but the list may define some new types
743 that we have to remember, so we must scan it now. */
746 read_type (&p
, objfile
);
751 /* A global function definition. */
752 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
753 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
754 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
755 add_symbol_to_list (sym
, &global_symbols
);
756 goto process_function_types
;
759 /* For a class G (global) symbol, it appears that the
760 value is not correct. It is necessary to search for the
761 corresponding linker definition to find the value.
762 These definitions appear at the end of the namelist. */
763 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
764 i
= hashname (SYMBOL_NAME (sym
));
765 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
766 global_sym_chain
[i
] = sym
;
767 SYMBOL_CLASS (sym
) = LOC_STATIC
;
768 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
769 add_symbol_to_list (sym
, &global_symbols
);
772 /* This case is faked by a conditional above,
773 when there is no code letter in the dbx data.
774 Dbx data never actually contains 'l'. */
776 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
777 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
778 SYMBOL_VALUE (sym
) = valu
;
779 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
780 add_symbol_to_list (sym
, &local_symbols
);
785 /* pF is a two-letter code that means a function parameter in Fortran.
786 The type-number specifies the type of the return value.
787 Translate it into a pointer-to-function type. */
791 = lookup_pointer_type
792 (lookup_function_type (read_type (&p
, objfile
)));
795 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
797 /* Normally this is a parameter, a LOC_ARG. On the i960, it
798 can also be a LOC_LOCAL_ARG depending on symbol type. */
799 #ifndef DBX_PARM_SYMBOL_CLASS
800 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
803 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
804 SYMBOL_VALUE (sym
) = valu
;
805 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
807 /* This doesn't work yet. */
808 add_param_to_type (&in_function_type
, sym
);
810 add_symbol_to_list (sym
, &local_symbols
);
812 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
813 /* On little-endian machines, this crud is never necessary, and,
814 if the extra bytes contain garbage, is harmful. */
816 #else /* Big endian. */
817 /* If it's gcc-compiled, if it says `short', believe it. */
818 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
821 #if !BELIEVE_PCC_PROMOTION
823 /* This is the signed type which arguments get promoted to. */
824 static struct type
*pcc_promotion_type
;
825 /* This is the unsigned type which arguments get promoted to. */
826 static struct type
*pcc_unsigned_promotion_type
;
828 /* Call it "int" because this is mainly C lossage. */
829 if (pcc_promotion_type
== NULL
)
831 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
834 if (pcc_unsigned_promotion_type
== NULL
)
835 pcc_unsigned_promotion_type
=
836 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
837 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
839 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
840 /* This macro is defined on machines (e.g. sparc) where
841 we should believe the type of a PCC 'short' argument,
842 but shouldn't believe the address (the address is
843 the address of the corresponding int).
845 My guess is that this correction, as opposed to changing
846 the parameter to an 'int' (as done below, for PCC
847 on most machines), is the right thing to do
848 on all machines, but I don't want to risk breaking
849 something that already works. On most PCC machines,
850 the sparc problem doesn't come up because the calling
851 function has to zero the top bytes (not knowing whether
852 the called function wants an int or a short), so there
853 is little practical difference between an int and a short
854 (except perhaps what happens when the GDB user types
855 "print short_arg = 0x10000;").
857 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
858 actually produces the correct address (we don't need to fix it
859 up). I made this code adapt so that it will offset the symbol
860 if it was pointing at an int-aligned location and not
861 otherwise. This way you can use the same gdb for 4.0.x and
864 If the parameter is shorter than an int, and is integral
865 (e.g. char, short, or unsigned equivalent), and is claimed to
866 be passed on an integer boundary, don't believe it! Offset the
867 parameter's address to the tail-end of that integer. */
869 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
870 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
871 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
873 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
874 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
878 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
880 /* If PCC says a parameter is a short or a char,
881 it is really an int. */
882 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
883 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
886 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
887 ? pcc_unsigned_promotion_type
888 : pcc_promotion_type
;
892 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
894 #endif /* !BELIEVE_PCC_PROMOTION. */
895 #endif /* Big endian. */
898 /* acc seems to use P to delare the prototypes of functions that
899 are referenced by this file. gdb is not prepared to deal
900 with this extra information. FIXME, it ought to. */
903 read_type (&p
, objfile
);
904 goto process_prototype_types
;
909 /* Parameter which is in a register. */
910 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
911 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
912 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
913 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
915 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
916 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
918 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
919 add_symbol_to_list (sym
, &local_symbols
);
923 /* Register variable (either global or local). */
924 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
925 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
926 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
927 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
929 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
930 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
932 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
935 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
936 name to represent an argument passed in a register.
937 GCC uses 'P' for the same case. So if we find such a symbol pair
938 we combine it into one 'P' symbol.
940 But we only do this in the REG_STRUCT_HAS_ADDR case, so that
941 we can still get information about what is going on with the
942 stack (VAX for computing args_printed, using stack slots instead
943 of saved registers in backtraces, etc.).
945 Note that this code illegally combines
946 main(argc) struct foo argc; { register struct foo argc; }
947 but this case is considered pathological and causes a warning
948 from a decent compiler. */
951 && local_symbols
->nsyms
> 0
952 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
953 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
954 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
))
956 struct symbol
*prev_sym
;
957 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
958 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
959 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
961 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
962 /* Use the type from the LOC_REGISTER; that is the type
963 that is actually in that register. */
964 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
965 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
970 add_symbol_to_list (sym
, &local_symbols
);
973 add_symbol_to_list (sym
, &file_symbols
);
977 /* Static symbol at top level of file */
978 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
979 SYMBOL_CLASS (sym
) = LOC_STATIC
;
980 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
981 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
982 add_symbol_to_list (sym
, &file_symbols
);
986 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
988 /* For a nameless type, we don't want a create a symbol, thus we
989 did not use `sym'. Return without further processing. */
990 if (nameless
) return NULL
;
992 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
993 SYMBOL_VALUE (sym
) = valu
;
994 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
995 /* C++ vagaries: we may have a type which is derived from
996 a base type which did not have its name defined when the
997 derived class was output. We fill in the derived class's
998 base part member's name here in that case. */
999 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1000 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1001 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1002 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1005 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1006 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1007 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1008 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1011 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1013 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1014 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1016 /* If we are giving a name to a type such as "pointer to
1017 foo" or "function returning foo", we better not set
1018 the TYPE_NAME. If the program contains "typedef char
1019 *caddr_t;", we don't want all variables of type char
1020 * to print as caddr_t. This is not just a
1021 consequence of GDB's type management; PCC and GCC (at
1022 least through version 2.4) both output variables of
1023 either type char * or caddr_t with the type number
1024 defined in the 't' symbol for caddr_t. If a future
1025 compiler cleans this up it GDB is not ready for it
1026 yet, but if it becomes ready we somehow need to
1027 disable this check (without breaking the PCC/GCC2.4
1032 Fortunately, this check seems not to be necessary
1033 for anything except pointers or functions. */
1036 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1039 add_symbol_to_list (sym
, &file_symbols
);
1043 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1044 by 't' which means we are typedef'ing it as well. */
1045 synonym
= *p
== 't';
1050 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1051 strlen (SYMBOL_NAME (sym
)),
1052 &objfile
-> symbol_obstack
);
1054 /* The semantics of C++ state that "struct foo { ... }" also defines
1055 a typedef for "foo". Unfortunately, cfront never makes the typedef
1056 when translating C++ into C. We make the typedef here so that
1057 "ptype foo" works as expected for cfront translated code. */
1058 else if (current_subfile
->language
== language_cplus
)
1061 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1062 strlen (SYMBOL_NAME (sym
)),
1063 &objfile
-> symbol_obstack
);
1066 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1068 /* For a nameless type, we don't want a create a symbol, thus we
1069 did not use `sym'. Return without further processing. */
1070 if (nameless
) return NULL
;
1072 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1073 SYMBOL_VALUE (sym
) = valu
;
1074 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1075 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1076 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1077 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1078 add_symbol_to_list (sym
, &file_symbols
);
1082 /* Clone the sym and then modify it. */
1083 register struct symbol
*typedef_sym
= (struct symbol
*)
1084 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1085 *typedef_sym
= *sym
;
1086 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1087 SYMBOL_VALUE (typedef_sym
) = valu
;
1088 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1089 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1090 TYPE_NAME (SYMBOL_TYPE (sym
))
1091 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1092 add_symbol_to_list (typedef_sym
, &file_symbols
);
1097 /* Static symbol of local scope */
1098 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1099 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1100 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1101 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1102 add_symbol_to_list (sym
, &local_symbols
);
1106 /* Reference parameter */
1107 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1108 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1109 SYMBOL_VALUE (sym
) = valu
;
1110 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1111 add_symbol_to_list (sym
, &local_symbols
);
1115 /* This is used by Sun FORTRAN for "function result value".
1116 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1117 that Pascal uses it too, but when I tried it Pascal used
1118 "x:3" (local symbol) instead. */
1119 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1120 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1121 SYMBOL_VALUE (sym
) = valu
;
1122 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1123 add_symbol_to_list (sym
, &local_symbols
);
1127 SYMBOL_TYPE (sym
) = error_type (&p
);
1128 SYMBOL_CLASS (sym
) = LOC_CONST
;
1129 SYMBOL_VALUE (sym
) = 0;
1130 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1131 add_symbol_to_list (sym
, &file_symbols
);
1135 /* When passing structures to a function, some systems sometimes pass
1136 the address in a register, not the structure itself.
1138 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1139 to LOC_REGPARM_ADDR for structures and unions. */
1141 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1142 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1143 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1144 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1145 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1151 /* Skip rest of this symbol and return an error type.
1153 General notes on error recovery: error_type always skips to the
1154 end of the symbol (modulo cretinous dbx symbol name continuation).
1155 Thus code like this:
1157 if (*(*pp)++ != ';')
1158 return error_type (pp);
1160 is wrong because if *pp starts out pointing at '\0' (typically as the
1161 result of an earlier error), it will be incremented to point to the
1162 start of the next symbol, which might produce strange results, at least
1163 if you run off the end of the string table. Instead use
1166 return error_type (pp);
1172 foo = error_type (pp);
1176 And in case it isn't obvious, the point of all this hair is so the compiler
1177 can define new types and new syntaxes, and old versions of the
1178 debugger will be able to read the new symbol tables. */
1180 static struct type
*
1184 complain (&error_type_complaint
);
1187 /* Skip to end of symbol. */
1188 while (**pp
!= '\0')
1193 /* Check for and handle cretinous dbx symbol name continuation! */
1194 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1196 *pp
= next_symbol_text ();
1203 return (builtin_type_error
);
1207 /* Read type information or a type definition; return the type. Even
1208 though this routine accepts either type information or a type
1209 definition, the distinction is relevant--some parts of stabsread.c
1210 assume that type information starts with a digit, '-', or '(' in
1211 deciding whether to call read_type. */
1214 read_type (pp
, objfile
)
1216 struct objfile
*objfile
;
1218 register struct type
*type
= 0;
1222 char type_descriptor
;
1224 /* Size in bits of type if specified by a type attribute, or -1 if
1225 there is no size attribute. */
1228 /* Used to distinguish string and bitstring from char-array and set. */
1231 /* Read type number if present. The type number may be omitted.
1232 for instance in a two-dimensional array declared with type
1233 "ar1;1;10;ar1;1;10;4". */
1234 if ((**pp
>= '0' && **pp
<= '9')
1238 if (read_type_number (pp
, typenums
) != 0)
1239 return error_type (pp
);
1241 /* Type is not being defined here. Either it already exists,
1242 or this is a forward reference to it. dbx_alloc_type handles
1245 return dbx_alloc_type (typenums
, objfile
);
1247 /* Type is being defined here. */
1254 /* It might be a type attribute or a member type. */
1255 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1260 /* Type attributes. */
1263 /* Skip to the semicolon. */
1264 while (*p
!= ';' && *p
!= '\0')
1268 return error_type (pp
);
1270 /* Skip the semicolon. */
1276 type_size
= atoi (attr
+ 1);
1286 /* Ignore unrecognized type attributes, so future compilers
1287 can invent new ones. */
1292 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1297 /* 'typenums=' not present, type is anonymous. Read and return
1298 the definition, but don't put it in the type vector. */
1299 typenums
[0] = typenums
[1] = -1;
1303 type_descriptor
= (*pp
)[-1];
1304 switch (type_descriptor
)
1308 enum type_code code
;
1310 /* Used to index through file_symbols. */
1311 struct pending
*ppt
;
1314 /* Name including "struct", etc. */
1318 char *from
, *to
, *p
, *q1
, *q2
;
1320 /* Set the type code according to the following letter. */
1324 code
= TYPE_CODE_STRUCT
;
1327 code
= TYPE_CODE_UNION
;
1330 code
= TYPE_CODE_ENUM
;
1334 /* Complain and keep going, so compilers can invent new
1335 cross-reference types. */
1336 static struct complaint msg
=
1337 {"Unrecognized cross-reference type `%c'", 0, 0};
1338 complain (&msg
, (*pp
)[0]);
1339 code
= TYPE_CODE_STRUCT
;
1344 q1
= strchr(*pp
, '<');
1345 p
= strchr(*pp
, ':');
1347 return error_type (pp
);
1348 while (q1
&& p
> q1
&& p
[1] == ':')
1350 q2
= strchr(q1
, '>');
1356 return error_type (pp
);
1359 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1361 /* Copy the name. */
1367 /* Set the pointer ahead of the name which we just read, and
1372 /* Now check to see whether the type has already been
1373 declared. This was written for arrays of cross-referenced
1374 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1375 sure it is not necessary anymore. But it might be a good
1376 idea, to save a little memory. */
1378 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1379 for (i
= 0; i
< ppt
->nsyms
; i
++)
1381 struct symbol
*sym
= ppt
->symbol
[i
];
1383 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1384 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1385 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1386 && STREQ (SYMBOL_NAME (sym
), type_name
))
1388 obstack_free (&objfile
-> type_obstack
, type_name
);
1389 type
= SYMBOL_TYPE (sym
);
1394 /* Didn't find the type to which this refers, so we must
1395 be dealing with a forward reference. Allocate a type
1396 structure for it, and keep track of it so we can
1397 fill in the rest of the fields when we get the full
1399 type
= dbx_alloc_type (typenums
, objfile
);
1400 TYPE_CODE (type
) = code
;
1401 TYPE_TAG_NAME (type
) = type_name
;
1402 INIT_CPLUS_SPECIFIC(type
);
1403 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1405 add_undefined_type (type
);
1409 case '-': /* RS/6000 built-in type */
1428 /* Peek ahead at the number to detect void. */
1429 if (read_type_number (pp
, xtypenums
) != 0)
1430 return error_type (pp
);
1432 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1433 /* It's being defined as itself. That means it is "void". */
1434 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1439 /* Go back to the number and have read_type get it. This means
1440 that we can deal with something like t(1,2)=(3,4)=... which
1441 the Lucid compiler uses. */
1443 xtype
= read_type (pp
, objfile
);
1445 /* The type is being defined to another type. So we copy the type.
1446 This loses if we copy a C++ class and so we lose track of how
1447 the names are mangled (but g++ doesn't output stabs like this
1450 type
= alloc_type (objfile
);
1451 memcpy (type
, xtype
, sizeof (struct type
));
1453 /* The idea behind clearing the names is that the only purpose
1454 for defining a type to another type is so that the name of
1455 one can be different. So we probably don't need to worry much
1456 about the case where the compiler doesn't give a name to the
1458 TYPE_NAME (type
) = NULL
;
1459 TYPE_TAG_NAME (type
) = NULL
;
1461 if (typenums
[0] != -1)
1462 *dbx_lookup_type (typenums
) = type
;
1466 /* In the following types, we must be sure to overwrite any existing
1467 type that the typenums refer to, rather than allocating a new one
1468 and making the typenums point to the new one. This is because there
1469 may already be pointers to the existing type (if it had been
1470 forward-referenced), and we must change it to a pointer, function,
1471 reference, or whatever, *in-place*. */
1474 type1
= read_type (pp
, objfile
);
1475 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1478 case '&': /* Reference to another type */
1479 type1
= read_type (pp
, objfile
);
1480 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1483 case 'f': /* Function returning another type */
1484 type1
= read_type (pp
, objfile
);
1485 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1488 case 'k': /* Const qualifier on some type (Sun) */
1489 type
= read_type (pp
, objfile
);
1490 /* FIXME! For now, we ignore const and volatile qualifiers. */
1493 case 'B': /* Volatile qual on some type (Sun) */
1494 type
= read_type (pp
, objfile
);
1495 /* FIXME! For now, we ignore const and volatile qualifiers. */
1498 /* FIXME -- we should be doing smash_to_XXX types here. */
1499 case '@': /* Member (class & variable) type */
1501 struct type
*domain
= read_type (pp
, objfile
);
1502 struct type
*memtype
;
1505 /* Invalid member type data format. */
1506 return error_type (pp
);
1509 memtype
= read_type (pp
, objfile
);
1510 type
= dbx_alloc_type (typenums
, objfile
);
1511 smash_to_member_type (type
, domain
, memtype
);
1515 case '#': /* Method (class & fn) type */
1516 if ((*pp
)[0] == '#')
1518 /* We'll get the parameter types from the name. */
1519 struct type
*return_type
;
1522 return_type
= read_type (pp
, objfile
);
1523 if (*(*pp
)++ != ';')
1524 complain (&invalid_member_complaint
, symnum
);
1525 type
= allocate_stub_method (return_type
);
1526 if (typenums
[0] != -1)
1527 *dbx_lookup_type (typenums
) = type
;
1531 struct type
*domain
= read_type (pp
, objfile
);
1532 struct type
*return_type
;
1536 /* Invalid member type data format. */
1537 return error_type (pp
);
1541 return_type
= read_type (pp
, objfile
);
1542 args
= read_args (pp
, ';', objfile
);
1543 type
= dbx_alloc_type (typenums
, objfile
);
1544 smash_to_method_type (type
, domain
, return_type
, args
);
1548 case 'r': /* Range type */
1549 type
= read_range_type (pp
, typenums
, objfile
);
1550 if (typenums
[0] != -1)
1551 *dbx_lookup_type (typenums
) = type
;
1554 case 'b': /* Sun ACC builtin int type */
1555 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1556 if (typenums
[0] != -1)
1557 *dbx_lookup_type (typenums
) = type
;
1560 case 'R': /* Sun ACC builtin float type */
1561 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1562 if (typenums
[0] != -1)
1563 *dbx_lookup_type (typenums
) = type
;
1566 case 'e': /* Enumeration type */
1567 type
= dbx_alloc_type (typenums
, objfile
);
1568 type
= read_enum_type (pp
, type
, objfile
);
1569 if (typenums
[0] != -1)
1570 *dbx_lookup_type (typenums
) = type
;
1573 case 's': /* Struct type */
1574 case 'u': /* Union type */
1575 type
= dbx_alloc_type (typenums
, objfile
);
1576 if (!TYPE_NAME (type
))
1578 TYPE_NAME (type
) = type_synonym_name
;
1580 type_synonym_name
= NULL
;
1581 switch (type_descriptor
)
1584 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1587 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1590 type
= read_struct_type (pp
, type
, objfile
);
1593 case 'a': /* Array type */
1595 return error_type (pp
);
1598 type
= dbx_alloc_type (typenums
, objfile
);
1599 type
= read_array_type (pp
, type
, objfile
);
1601 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1605 type1
= read_type (pp
, objfile
);
1606 type
= create_set_type ((struct type
*) NULL
, type1
);
1608 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1609 if (typenums
[0] != -1)
1610 *dbx_lookup_type (typenums
) = type
;
1614 --*pp
; /* Go back to the symbol in error */
1615 /* Particularly important if it was \0! */
1616 return error_type (pp
);
1621 warning ("GDB internal error, type is NULL in stabsread.c\n");
1622 return error_type (pp
);
1625 /* Size specified in a type attribute overrides any other size. */
1626 if (type_size
!= -1)
1627 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1632 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1633 Return the proper type node for a given builtin type number. */
1635 static struct type
*
1636 rs6000_builtin_type (typenum
)
1639 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1640 #define NUMBER_RECOGNIZED 30
1641 /* This includes an empty slot for type number -0. */
1642 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1643 struct type
*rettype
= NULL
;
1645 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1647 complain (&rs6000_builtin_complaint
, typenum
);
1648 return builtin_type_error
;
1650 if (negative_types
[-typenum
] != NULL
)
1651 return negative_types
[-typenum
];
1653 #if TARGET_CHAR_BIT != 8
1654 #error This code wrong for TARGET_CHAR_BIT not 8
1655 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1656 that if that ever becomes not true, the correct fix will be to
1657 make the size in the struct type to be in bits, not in units of
1664 /* The size of this and all the other types are fixed, defined
1665 by the debugging format. If there is a type called "int" which
1666 is other than 32 bits, then it should use a new negative type
1667 number (or avoid negative type numbers for that case).
1668 See stabs.texinfo. */
1669 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1672 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1675 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1678 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1681 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1682 "unsigned char", NULL
);
1685 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1688 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1689 "unsigned short", NULL
);
1692 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1693 "unsigned int", NULL
);
1696 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1699 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1700 "unsigned long", NULL
);
1703 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1706 /* IEEE single precision (32 bit). */
1707 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1710 /* IEEE double precision (64 bit). */
1711 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1714 /* This is an IEEE double on the RS/6000, and different machines with
1715 different sizes for "long double" should use different negative
1716 type numbers. See stabs.texinfo. */
1717 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1720 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1723 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1726 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1729 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1732 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1735 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1739 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1743 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1747 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1751 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1755 /* Complex type consisting of two IEEE single precision values. */
1756 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1759 /* Complex type consisting of two IEEE double precision values. */
1760 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1763 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1766 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1769 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1772 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1775 negative_types
[-typenum
] = rettype
;
1779 /* This page contains subroutines of read_type. */
1781 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1782 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1783 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1784 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1786 /* Read member function stabs info for C++ classes. The form of each member
1789 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1791 An example with two member functions is:
1793 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1795 For the case of overloaded operators, the format is op$::*.funcs, where
1796 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1797 name (such as `+=') and `.' marks the end of the operator name.
1799 Returns 1 for success, 0 for failure. */
1802 read_member_functions (fip
, pp
, type
, objfile
)
1803 struct field_info
*fip
;
1806 struct objfile
*objfile
;
1810 /* Total number of member functions defined in this class. If the class
1811 defines two `f' functions, and one `g' function, then this will have
1813 int total_length
= 0;
1817 struct next_fnfield
*next
;
1818 struct fn_field fn_field
;
1820 struct type
*look_ahead_type
;
1821 struct next_fnfieldlist
*new_fnlist
;
1822 struct next_fnfield
*new_sublist
;
1826 /* Process each list until we find something that is not a member function
1827 or find the end of the functions. */
1831 /* We should be positioned at the start of the function name.
1832 Scan forward to find the first ':' and if it is not the
1833 first of a "::" delimiter, then this is not a member function. */
1845 look_ahead_type
= NULL
;
1848 new_fnlist
= (struct next_fnfieldlist
*)
1849 xmalloc (sizeof (struct next_fnfieldlist
));
1850 make_cleanup (free
, new_fnlist
);
1851 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1853 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1855 /* This is a completely wierd case. In order to stuff in the
1856 names that might contain colons (the usual name delimiter),
1857 Mike Tiemann defined a different name format which is
1858 signalled if the identifier is "op$". In that case, the
1859 format is "op$::XXXX." where XXXX is the name. This is
1860 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1861 /* This lets the user type "break operator+".
1862 We could just put in "+" as the name, but that wouldn't
1864 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1865 char *o
= opname
+ 3;
1867 /* Skip past '::'. */
1870 STABS_CONTINUE (pp
);
1876 main_fn_name
= savestring (opname
, o
- opname
);
1882 main_fn_name
= savestring (*pp
, p
- *pp
);
1883 /* Skip past '::'. */
1886 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1891 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1892 make_cleanup (free
, new_sublist
);
1893 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1895 /* Check for and handle cretinous dbx symbol name continuation! */
1896 if (look_ahead_type
== NULL
)
1899 STABS_CONTINUE (pp
);
1901 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1904 /* Invalid symtab info for member function. */
1910 /* g++ version 1 kludge */
1911 new_sublist
-> fn_field
.type
= look_ahead_type
;
1912 look_ahead_type
= NULL
;
1922 /* If this is just a stub, then we don't have the real name here. */
1924 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1926 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1927 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1928 new_sublist
-> fn_field
.is_stub
= 1;
1930 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1933 /* Set this member function's visibility fields. */
1936 case VISIBILITY_PRIVATE
:
1937 new_sublist
-> fn_field
.is_private
= 1;
1939 case VISIBILITY_PROTECTED
:
1940 new_sublist
-> fn_field
.is_protected
= 1;
1944 STABS_CONTINUE (pp
);
1947 case 'A': /* Normal functions. */
1948 new_sublist
-> fn_field
.is_const
= 0;
1949 new_sublist
-> fn_field
.is_volatile
= 0;
1952 case 'B': /* `const' member functions. */
1953 new_sublist
-> fn_field
.is_const
= 1;
1954 new_sublist
-> fn_field
.is_volatile
= 0;
1957 case 'C': /* `volatile' member function. */
1958 new_sublist
-> fn_field
.is_const
= 0;
1959 new_sublist
-> fn_field
.is_volatile
= 1;
1962 case 'D': /* `const volatile' member function. */
1963 new_sublist
-> fn_field
.is_const
= 1;
1964 new_sublist
-> fn_field
.is_volatile
= 1;
1967 case '*': /* File compiled with g++ version 1 -- no info */
1972 complain (&const_vol_complaint
, **pp
);
1981 /* virtual member function, followed by index.
1982 The sign bit is set to distinguish pointers-to-methods
1983 from virtual function indicies. Since the array is
1984 in words, the quantity must be shifted left by 1
1985 on 16 bit machine, and by 2 on 32 bit machine, forcing
1986 the sign bit out, and usable as a valid index into
1987 the array. Remove the sign bit here. */
1988 new_sublist
-> fn_field
.voffset
=
1989 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1993 STABS_CONTINUE (pp
);
1994 if (**pp
== ';' || **pp
== '\0')
1996 /* Must be g++ version 1. */
1997 new_sublist
-> fn_field
.fcontext
= 0;
2001 /* Figure out from whence this virtual function came.
2002 It may belong to virtual function table of
2003 one of its baseclasses. */
2004 look_ahead_type
= read_type (pp
, objfile
);
2007 /* g++ version 1 overloaded methods. */
2011 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2020 look_ahead_type
= NULL
;
2026 /* static member function. */
2027 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2028 if (strncmp (new_sublist
-> fn_field
.physname
,
2029 main_fn_name
, strlen (main_fn_name
)))
2031 new_sublist
-> fn_field
.is_stub
= 1;
2037 complain (&member_fn_complaint
, (*pp
)[-1]);
2038 /* Fall through into normal member function. */
2041 /* normal member function. */
2042 new_sublist
-> fn_field
.voffset
= 0;
2043 new_sublist
-> fn_field
.fcontext
= 0;
2047 new_sublist
-> next
= sublist
;
2048 sublist
= new_sublist
;
2050 STABS_CONTINUE (pp
);
2052 while (**pp
!= ';' && **pp
!= '\0');
2056 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2057 obstack_alloc (&objfile
-> type_obstack
,
2058 sizeof (struct fn_field
) * length
);
2059 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2060 sizeof (struct fn_field
) * length
);
2061 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2063 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2066 new_fnlist
-> fn_fieldlist
.length
= length
;
2067 new_fnlist
-> next
= fip
-> fnlist
;
2068 fip
-> fnlist
= new_fnlist
;
2070 total_length
+= length
;
2071 STABS_CONTINUE (pp
);
2076 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2077 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2078 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2079 memset (TYPE_FN_FIELDLISTS (type
), 0,
2080 sizeof (struct fn_fieldlist
) * nfn_fields
);
2081 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2082 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2088 /* Special GNU C++ name.
2090 Returns 1 for success, 0 for failure. "failure" means that we can't
2091 keep parsing and it's time for error_type(). */
2094 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2095 struct field_info
*fip
;
2098 struct objfile
*objfile
;
2103 struct type
*context
;
2113 /* At this point, *pp points to something like "22:23=*22...",
2114 where the type number before the ':' is the "context" and
2115 everything after is a regular type definition. Lookup the
2116 type, find it's name, and construct the field name. */
2118 context
= read_type (pp
, objfile
);
2122 case 'f': /* $vf -- a virtual function table pointer */
2123 fip
->list
->field
.name
=
2124 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2127 case 'b': /* $vb -- a virtual bsomethingorother */
2128 name
= type_name_no_tag (context
);
2131 complain (&invalid_cpp_type_complaint
, symnum
);
2134 fip
->list
->field
.name
=
2135 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2139 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2140 fip
->list
->field
.name
=
2141 obconcat (&objfile
->type_obstack
,
2142 "INVALID_CPLUSPLUS_ABBREV", "", "");
2146 /* At this point, *pp points to the ':'. Skip it and read the
2152 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2155 fip
->list
->field
.type
= read_type (pp
, objfile
);
2157 (*pp
)++; /* Skip the comma. */
2163 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2167 /* This field is unpacked. */
2168 fip
->list
->field
.bitsize
= 0;
2169 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2173 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2174 /* We have no idea what syntax an unrecognized abbrev would have, so
2175 better return 0. If we returned 1, we would need to at least advance
2176 *pp to avoid an infinite loop. */
2183 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2184 struct field_info
*fip
;
2188 struct objfile
*objfile
;
2190 fip
-> list
-> field
.name
=
2191 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2194 /* This means we have a visibility for a field coming. */
2198 fip
-> list
-> visibility
= *(*pp
)++;
2202 /* normal dbx-style format, no explicit visibility */
2203 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2206 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2211 /* Possible future hook for nested types. */
2214 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2220 /* Static class member. */
2221 fip
-> list
-> field
.bitpos
= (long) -1;
2227 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2231 else if (**pp
!= ',')
2233 /* Bad structure-type format. */
2234 complain (&stabs_general_complaint
, "bad structure-type format");
2238 (*pp
)++; /* Skip the comma. */
2242 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2245 complain (&stabs_general_complaint
, "bad structure-type format");
2248 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2251 complain (&stabs_general_complaint
, "bad structure-type format");
2256 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2258 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2259 it is a field which has been optimized out. The correct stab for
2260 this case is to use VISIBILITY_IGNORE, but that is a recent
2261 invention. (2) It is a 0-size array. For example
2262 union { int num; char str[0]; } foo. Printing "<no value>" for
2263 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2264 will continue to work, and a 0-size array as a whole doesn't
2265 have any contents to print.
2267 I suspect this probably could also happen with gcc -gstabs (not
2268 -gstabs+) for static fields, and perhaps other C++ extensions.
2269 Hopefully few people use -gstabs with gdb, since it is intended
2270 for dbx compatibility. */
2272 /* Ignore this field. */
2273 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2277 /* Detect an unpacked field and mark it as such.
2278 dbx gives a bit size for all fields.
2279 Note that forward refs cannot be packed,
2280 and treat enums as if they had the width of ints. */
2282 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2283 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2285 fip
-> list
-> field
.bitsize
= 0;
2287 if ((fip
-> list
-> field
.bitsize
2288 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2289 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2290 && (fip
-> list
-> field
.bitsize
2295 fip
-> list
-> field
.bitpos
% 8 == 0)
2297 fip
-> list
-> field
.bitsize
= 0;
2303 /* Read struct or class data fields. They have the form:
2305 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2307 At the end, we see a semicolon instead of a field.
2309 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2312 The optional VISIBILITY is one of:
2314 '/0' (VISIBILITY_PRIVATE)
2315 '/1' (VISIBILITY_PROTECTED)
2316 '/2' (VISIBILITY_PUBLIC)
2317 '/9' (VISIBILITY_IGNORE)
2319 or nothing, for C style fields with public visibility.
2321 Returns 1 for success, 0 for failure. */
2324 read_struct_fields (fip
, pp
, type
, objfile
)
2325 struct field_info
*fip
;
2328 struct objfile
*objfile
;
2331 struct nextfield
*new;
2333 /* We better set p right now, in case there are no fields at all... */
2337 /* Read each data member type until we find the terminating ';' at the end of
2338 the data member list, or break for some other reason such as finding the
2339 start of the member function list. */
2343 STABS_CONTINUE (pp
);
2344 /* Get space to record the next field's data. */
2345 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2346 make_cleanup (free
, new);
2347 memset (new, 0, sizeof (struct nextfield
));
2348 new -> next
= fip
-> list
;
2351 /* Get the field name. */
2354 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2355 unless the CPLUS_MARKER is followed by an underscore, in
2356 which case it is just the name of an anonymous type, which we
2357 should handle like any other type name. We accept either '$'
2358 or '.', because a field name can never contain one of these
2359 characters except as a CPLUS_MARKER (we probably should be
2360 doing that in most parts of GDB). */
2362 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2364 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2369 /* Look for the ':' that separates the field name from the field
2370 values. Data members are delimited by a single ':', while member
2371 functions are delimited by a pair of ':'s. When we hit the member
2372 functions (if any), terminate scan loop and return. */
2374 while (*p
!= ':' && *p
!= '\0')
2381 /* Check to see if we have hit the member functions yet. */
2386 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2388 if (p
[0] == ':' && p
[1] == ':')
2390 /* chill the list of fields: the last entry (at the head) is a
2391 partially constructed entry which we now scrub. */
2392 fip
-> list
= fip
-> list
-> next
;
2397 /* The stabs for C++ derived classes contain baseclass information which
2398 is marked by a '!' character after the total size. This function is
2399 called when we encounter the baseclass marker, and slurps up all the
2400 baseclass information.
2402 Immediately following the '!' marker is the number of base classes that
2403 the class is derived from, followed by information for each base class.
2404 For each base class, there are two visibility specifiers, a bit offset
2405 to the base class information within the derived class, a reference to
2406 the type for the base class, and a terminating semicolon.
2408 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2410 Baseclass information marker __________________|| | | | | | |
2411 Number of baseclasses __________________________| | | | | | |
2412 Visibility specifiers (2) ________________________| | | | | |
2413 Offset in bits from start of class _________________| | | | |
2414 Type number for base class ___________________________| | | |
2415 Visibility specifiers (2) _______________________________| | |
2416 Offset in bits from start of class ________________________| |
2417 Type number of base class ____________________________________|
2419 Return 1 for success, 0 for (error-type-inducing) failure. */
2422 read_baseclasses (fip
, pp
, type
, objfile
)
2423 struct field_info
*fip
;
2426 struct objfile
*objfile
;
2429 struct nextfield
*new;
2437 /* Skip the '!' baseclass information marker. */
2441 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2444 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2450 /* Some stupid compilers have trouble with the following, so break
2451 it up into simpler expressions. */
2452 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2453 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2456 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2459 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2460 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2464 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2466 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2468 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2469 make_cleanup (free
, new);
2470 memset (new, 0, sizeof (struct nextfield
));
2471 new -> next
= fip
-> list
;
2473 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2475 STABS_CONTINUE (pp
);
2479 /* Nothing to do. */
2482 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2485 /* Unknown character. Complain and treat it as non-virtual. */
2487 static struct complaint msg
= {
2488 "Unknown virtual character `%c' for baseclass", 0, 0};
2489 complain (&msg
, **pp
);
2494 new -> visibility
= *(*pp
)++;
2495 switch (new -> visibility
)
2497 case VISIBILITY_PRIVATE
:
2498 case VISIBILITY_PROTECTED
:
2499 case VISIBILITY_PUBLIC
:
2502 /* Bad visibility format. Complain and treat it as
2505 static struct complaint msg
= {
2506 "Unknown visibility `%c' for baseclass", 0, 0};
2507 complain (&msg
, new -> visibility
);
2508 new -> visibility
= VISIBILITY_PUBLIC
;
2515 /* The remaining value is the bit offset of the portion of the object
2516 corresponding to this baseclass. Always zero in the absence of
2517 multiple inheritance. */
2519 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2524 /* The last piece of baseclass information is the type of the
2525 base class. Read it, and remember it's type name as this
2528 new -> field
.type
= read_type (pp
, objfile
);
2529 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2531 /* skip trailing ';' and bump count of number of fields seen */
2540 /* The tail end of stabs for C++ classes that contain a virtual function
2541 pointer contains a tilde, a %, and a type number.
2542 The type number refers to the base class (possibly this class itself) which
2543 contains the vtable pointer for the current class.
2545 This function is called when we have parsed all the method declarations,
2546 so we can look for the vptr base class info. */
2549 read_tilde_fields (fip
, pp
, type
, objfile
)
2550 struct field_info
*fip
;
2553 struct objfile
*objfile
;
2557 STABS_CONTINUE (pp
);
2559 /* If we are positioned at a ';', then skip it. */
2569 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2571 /* Obsolete flags that used to indicate the presence
2572 of constructors and/or destructors. */
2576 /* Read either a '%' or the final ';'. */
2577 if (*(*pp
)++ == '%')
2579 /* The next number is the type number of the base class
2580 (possibly our own class) which supplies the vtable for
2581 this class. Parse it out, and search that class to find
2582 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2583 and TYPE_VPTR_FIELDNO. */
2588 t
= read_type (pp
, objfile
);
2590 while (*p
!= '\0' && *p
!= ';')
2596 /* Premature end of symbol. */
2600 TYPE_VPTR_BASETYPE (type
) = t
;
2601 if (type
== t
) /* Our own class provides vtbl ptr */
2603 for (i
= TYPE_NFIELDS (t
) - 1;
2604 i
>= TYPE_N_BASECLASSES (t
);
2607 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2608 sizeof (vptr_name
) - 1))
2610 TYPE_VPTR_FIELDNO (type
) = i
;
2614 /* Virtual function table field not found. */
2615 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2620 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2631 attach_fn_fields_to_type (fip
, type
)
2632 struct field_info
*fip
;
2633 register struct type
*type
;
2637 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2639 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2641 /* @@ Memory leak on objfile -> type_obstack? */
2644 TYPE_NFN_FIELDS_TOTAL (type
) +=
2645 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2648 for (n
= TYPE_NFN_FIELDS (type
);
2649 fip
-> fnlist
!= NULL
;
2650 fip
-> fnlist
= fip
-> fnlist
-> next
)
2652 --n
; /* Circumvent Sun3 compiler bug */
2653 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2658 /* Create the vector of fields, and record how big it is.
2659 We need this info to record proper virtual function table information
2660 for this class's virtual functions. */
2663 attach_fields_to_type (fip
, type
, objfile
)
2664 struct field_info
*fip
;
2665 register struct type
*type
;
2666 struct objfile
*objfile
;
2668 register int nfields
= 0;
2669 register int non_public_fields
= 0;
2670 register struct nextfield
*scan
;
2672 /* Count up the number of fields that we have, as well as taking note of
2673 whether or not there are any non-public fields, which requires us to
2674 allocate and build the private_field_bits and protected_field_bits
2677 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2680 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2682 non_public_fields
++;
2686 /* Now we know how many fields there are, and whether or not there are any
2687 non-public fields. Record the field count, allocate space for the
2688 array of fields, and create blank visibility bitfields if necessary. */
2690 TYPE_NFIELDS (type
) = nfields
;
2691 TYPE_FIELDS (type
) = (struct field
*)
2692 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2693 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2695 if (non_public_fields
)
2697 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2699 TYPE_FIELD_PRIVATE_BITS (type
) =
2700 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2701 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2703 TYPE_FIELD_PROTECTED_BITS (type
) =
2704 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2705 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2707 TYPE_FIELD_IGNORE_BITS (type
) =
2708 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2709 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2712 /* Copy the saved-up fields into the field vector. Start from the head
2713 of the list, adding to the tail of the field array, so that they end
2714 up in the same order in the array in which they were added to the list. */
2716 while (nfields
-- > 0)
2718 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2719 switch (fip
-> list
-> visibility
)
2721 case VISIBILITY_PRIVATE
:
2722 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2725 case VISIBILITY_PROTECTED
:
2726 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2729 case VISIBILITY_IGNORE
:
2730 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2733 case VISIBILITY_PUBLIC
:
2737 /* Unknown visibility. Complain and treat it as public. */
2739 static struct complaint msg
= {
2740 "Unknown visibility `%c' for field", 0, 0};
2741 complain (&msg
, fip
-> list
-> visibility
);
2745 fip
-> list
= fip
-> list
-> next
;
2750 /* Read the description of a structure (or union type) and return an object
2751 describing the type.
2753 PP points to a character pointer that points to the next unconsumed token
2754 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2755 *PP will point to "4a:1,0,32;;".
2757 TYPE points to an incomplete type that needs to be filled in.
2759 OBJFILE points to the current objfile from which the stabs information is
2760 being read. (Note that it is redundant in that TYPE also contains a pointer
2761 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2764 static struct type
*
2765 read_struct_type (pp
, type
, objfile
)
2768 struct objfile
*objfile
;
2770 struct cleanup
*back_to
;
2771 struct field_info fi
;
2776 back_to
= make_cleanup (null_cleanup
, 0);
2778 INIT_CPLUS_SPECIFIC (type
);
2779 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2781 /* First comes the total size in bytes. */
2785 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2787 return error_type (pp
);
2790 /* Now read the baseclasses, if any, read the regular C struct or C++
2791 class member fields, attach the fields to the type, read the C++
2792 member functions, attach them to the type, and then read any tilde
2793 field (baseclass specifier for the class holding the main vtable). */
2795 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2796 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2797 || !attach_fields_to_type (&fi
, type
, objfile
)
2798 || !read_member_functions (&fi
, pp
, type
, objfile
)
2799 || !attach_fn_fields_to_type (&fi
, type
)
2800 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2802 do_cleanups (back_to
);
2803 return (error_type (pp
));
2806 do_cleanups (back_to
);
2810 /* Read a definition of an array type,
2811 and create and return a suitable type object.
2812 Also creates a range type which represents the bounds of that
2815 static struct type
*
2816 read_array_type (pp
, type
, objfile
)
2818 register struct type
*type
;
2819 struct objfile
*objfile
;
2821 struct type
*index_type
, *element_type
, *range_type
;
2826 /* Format of an array type:
2827 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2830 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2831 for these, produce a type like float[][]. */
2833 index_type
= read_type (pp
, objfile
);
2835 /* Improper format of array type decl. */
2836 return error_type (pp
);
2839 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2844 lower
= read_huge_number (pp
, ';', &nbits
);
2846 return error_type (pp
);
2848 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2853 upper
= read_huge_number (pp
, ';', &nbits
);
2855 return error_type (pp
);
2857 element_type
= read_type (pp
, objfile
);
2866 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2867 type
= create_array_type (type
, element_type
, range_type
);
2869 /* If we have an array whose element type is not yet known, but whose
2870 bounds *are* known, record it to be adjusted at the end of the file. */
2871 /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
2872 the two have the same effect except that the latter is cleaner and the
2873 former would be wrong for types which really are zero-length (if we
2876 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2878 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2879 add_undefined_type (type
);
2886 /* Read a definition of an enumeration type,
2887 and create and return a suitable type object.
2888 Also defines the symbols that represent the values of the type. */
2890 static struct type
*
2891 read_enum_type (pp
, type
, objfile
)
2893 register struct type
*type
;
2894 struct objfile
*objfile
;
2899 register struct symbol
*sym
;
2901 struct pending
**symlist
;
2902 struct pending
*osyms
, *syms
;
2906 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2907 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2908 to do? For now, force all enum values to file scope. */
2909 if (within_function
)
2910 symlist
= &local_symbols
;
2913 symlist
= &file_symbols
;
2915 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2917 /* Read the value-names and their values.
2918 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2919 A semicolon or comma instead of a NAME means the end. */
2920 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2923 STABS_CONTINUE (pp
);
2925 while (*p
!= ':') p
++;
2926 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2928 n
= read_huge_number (pp
, ',', &nbits
);
2930 return error_type (pp
);
2932 sym
= (struct symbol
*)
2933 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2934 memset (sym
, 0, sizeof (struct symbol
));
2935 SYMBOL_NAME (sym
) = name
;
2936 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2937 SYMBOL_CLASS (sym
) = LOC_CONST
;
2938 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2939 SYMBOL_VALUE (sym
) = n
;
2940 add_symbol_to_list (sym
, symlist
);
2945 (*pp
)++; /* Skip the semicolon. */
2947 /* Now fill in the fields of the type-structure. */
2949 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
2950 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2951 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2952 TYPE_NFIELDS (type
) = nsyms
;
2953 TYPE_FIELDS (type
) = (struct field
*)
2954 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2955 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2957 /* Find the symbols for the values and put them into the type.
2958 The symbols can be found in the symlist that we put them on
2959 to cause them to be defined. osyms contains the old value
2960 of that symlist; everything up to there was defined by us. */
2961 /* Note that we preserve the order of the enum constants, so
2962 that in something like "enum {FOO, LAST_THING=FOO}" we print
2963 FOO, not LAST_THING. */
2965 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2970 for (; j
< syms
->nsyms
; j
++,n
++)
2972 struct symbol
*xsym
= syms
->symbol
[j
];
2973 SYMBOL_TYPE (xsym
) = type
;
2974 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2975 TYPE_FIELD_VALUE (type
, n
) = 0;
2976 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2977 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2984 /* This screws up perfectly good C programs with enums. FIXME. */
2985 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2986 if(TYPE_NFIELDS(type
) == 2 &&
2987 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2988 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2989 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2990 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2991 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2997 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2998 typedefs in every file (for int, long, etc):
3000 type = b <signed> <width>; <offset>; <nbits>
3001 signed = u or s. Possible c in addition to u or s (for char?).
3002 offset = offset from high order bit to start bit of type.
3003 width is # bytes in object of this type, nbits is # bits in type.
3005 The width/offset stuff appears to be for small objects stored in
3006 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3009 static struct type
*
3010 read_sun_builtin_type (pp
, typenums
, objfile
)
3013 struct objfile
*objfile
;
3028 return error_type (pp
);
3032 /* For some odd reason, all forms of char put a c here. This is strange
3033 because no other type has this honor. We can safely ignore this because
3034 we actually determine 'char'acterness by the number of bits specified in
3040 /* The first number appears to be the number of bytes occupied
3041 by this type, except that unsigned short is 4 instead of 2.
3042 Since this information is redundant with the third number,
3043 we will ignore it. */
3044 read_huge_number (pp
, ';', &nbits
);
3046 return error_type (pp
);
3048 /* The second number is always 0, so ignore it too. */
3049 read_huge_number (pp
, ';', &nbits
);
3051 return error_type (pp
);
3053 /* The third number is the number of bits for this type. */
3054 type_bits
= read_huge_number (pp
, 0, &nbits
);
3056 return error_type (pp
);
3058 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3059 type_bits
/ TARGET_CHAR_BIT
,
3060 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3064 static struct type
*
3065 read_sun_floating_type (pp
, typenums
, objfile
)
3068 struct objfile
*objfile
;
3074 /* The first number has more details about the type, for example
3076 details
= read_huge_number (pp
, ';', &nbits
);
3078 return error_type (pp
);
3080 /* The second number is the number of bytes occupied by this type */
3081 nbytes
= read_huge_number (pp
, ';', &nbits
);
3083 return error_type (pp
);
3085 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3086 || details
== NF_COMPLEX32
)
3087 /* This is a type we can't handle, but we do know the size.
3088 We also will be able to give it a name. */
3089 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3091 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3094 /* Read a number from the string pointed to by *PP.
3095 The value of *PP is advanced over the number.
3096 If END is nonzero, the character that ends the
3097 number must match END, or an error happens;
3098 and that character is skipped if it does match.
3099 If END is zero, *PP is left pointing to that character.
3101 If the number fits in a long, set *BITS to 0 and return the value.
3102 If not, set *BITS to be the number of bits in the number and return 0.
3104 If encounter garbage, set *BITS to -1 and return 0. */
3107 read_huge_number (pp
, end
, bits
)
3127 /* Leading zero means octal. GCC uses this to output values larger
3128 than an int (because that would be hard in decimal). */
3135 upper_limit
= LONG_MAX
/ radix
;
3136 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3138 if (n
<= upper_limit
)
3141 n
+= c
- '0'; /* FIXME this overflows anyway */
3146 /* This depends on large values being output in octal, which is
3153 /* Ignore leading zeroes. */
3157 else if (c
== '2' || c
== '3')
3183 /* Large decimal constants are an error (because it is hard to
3184 count how many bits are in them). */
3190 /* -0x7f is the same as 0x80. So deal with it by adding one to
3191 the number of bits. */
3203 /* It's *BITS which has the interesting information. */
3207 static struct type
*
3208 read_range_type (pp
, typenums
, objfile
)
3211 struct objfile
*objfile
;
3217 struct type
*result_type
;
3218 struct type
*index_type
;
3220 /* First comes a type we are a subrange of.
3221 In C it is usually 0, 1 or the type being defined. */
3222 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3223 not just a type number. */
3224 if (read_type_number (pp
, rangenums
) != 0)
3225 return error_type (pp
);
3226 self_subrange
= (rangenums
[0] == typenums
[0] &&
3227 rangenums
[1] == typenums
[1]);
3229 /* A semicolon should now follow; skip it. */
3233 /* The remaining two operands are usually lower and upper bounds
3234 of the range. But in some special cases they mean something else. */
3235 n2
= read_huge_number (pp
, ';', &n2bits
);
3236 n3
= read_huge_number (pp
, ';', &n3bits
);
3238 if (n2bits
== -1 || n3bits
== -1)
3239 return error_type (pp
);
3241 /* If limits are huge, must be large integral type. */
3242 if (n2bits
!= 0 || n3bits
!= 0)
3244 char got_signed
= 0;
3245 char got_unsigned
= 0;
3246 /* Number of bits in the type. */
3249 /* Range from 0 to <large number> is an unsigned large integral type. */
3250 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3255 /* Range from <large number> to <large number>-1 is a large signed
3256 integral type. Take care of the case where <large number> doesn't
3257 fit in a long but <large number>-1 does. */
3258 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3259 || (n2bits
!= 0 && n3bits
== 0
3260 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3267 if (got_signed
|| got_unsigned
)
3269 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3270 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3274 return error_type (pp
);
3277 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3278 if (self_subrange
&& n2
== 0 && n3
== 0)
3279 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3281 /* If n3 is zero and n2 is not, we want a floating type,
3282 and n2 is the width in bytes.
3284 Fortran programs appear to use this for complex types also,
3285 and they give no way to distinguish between double and single-complex!
3287 GDB does not have complex types.
3289 Just return the complex as a float of that size. It won't work right
3290 for the complex values, but at least it makes the file loadable. */
3292 if (n3
== 0 && n2
> 0)
3294 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3297 /* If the upper bound is -1, it must really be an unsigned int. */
3299 else if (n2
== 0 && n3
== -1)
3301 /* It is unsigned int or unsigned long. */
3302 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3303 compatibility hack. */
3304 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3305 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3308 /* Special case: char is defined (Who knows why) as a subrange of
3309 itself with range 0-127. */
3310 else if (self_subrange
&& n2
== 0 && n3
== 127)
3311 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3313 /* We used to do this only for subrange of self or subrange of int. */
3317 /* n3 actually gives the size. */
3318 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3321 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3323 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3325 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3326 "unsigned long", and we already checked for that,
3327 so don't need to test for it here. */
3329 /* I think this is for Convex "long long". Since I don't know whether
3330 Convex sets self_subrange, I also accept that particular size regardless
3331 of self_subrange. */
3332 else if (n3
== 0 && n2
< 0
3334 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3335 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3336 else if (n2
== -n3
-1)
3339 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3341 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3342 if (n3
== 0x7fffffff)
3343 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3346 /* We have a real range type on our hands. Allocate space and
3347 return a real pointer. */
3349 /* At this point I don't have the faintest idea how to deal with
3350 a self_subrange type; I'm going to assume that this is used
3351 as an idiom, and that all of them are special cases. So . . . */
3353 return error_type (pp
);
3355 index_type
= *dbx_lookup_type (rangenums
);
3356 if (index_type
== NULL
)
3358 /* Does this actually ever happen? Is that why we are worrying
3359 about dealing with it rather than just calling error_type? */
3361 static struct type
*range_type_index
;
3363 complain (&range_type_base_complaint
, rangenums
[1]);
3364 if (range_type_index
== NULL
)
3366 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3367 0, "range type index type", NULL
);
3368 index_type
= range_type_index
;
3371 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3372 return (result_type
);
3375 /* Read in an argument list. This is a list of types, separated by commas
3376 and terminated with END. Return the list of types read in, or (struct type
3377 **)-1 if there is an error. */
3379 static struct type
**
3380 read_args (pp
, end
, objfile
)
3383 struct objfile
*objfile
;
3385 /* FIXME! Remove this arbitrary limit! */
3386 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3392 /* Invalid argument list: no ','. */
3393 return (struct type
**)-1;
3395 STABS_CONTINUE (pp
);
3396 types
[n
++] = read_type (pp
, objfile
);
3398 (*pp
)++; /* get past `end' (the ':' character) */
3402 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3404 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3406 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3407 memset (rval
+ n
, 0, sizeof (struct type
*));
3411 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3413 memcpy (rval
, types
, n
* sizeof (struct type
*));
3417 /* Common block handling. */
3419 /* List of symbols declared since the last BCOMM. This list is a tail
3420 of local_symbols. When ECOMM is seen, the symbols on the list
3421 are noted so their proper addresses can be filled in later,
3422 using the common block base address gotten from the assembler
3425 static struct pending
*common_block
;
3426 static int common_block_i
;
3428 /* Name of the current common block. We get it from the BCOMM instead of the
3429 ECOMM to match IBM documentation (even though IBM puts the name both places
3430 like everyone else). */
3431 static char *common_block_name
;
3433 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3434 to remain after this function returns. */
3437 common_block_start (name
, objfile
)
3439 struct objfile
*objfile
;
3441 if (common_block_name
!= NULL
)
3443 static struct complaint msg
= {
3444 "Invalid symbol data: common block within common block",
3448 common_block
= local_symbols
;
3449 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3450 common_block_name
= obsavestring (name
, strlen (name
),
3451 &objfile
-> symbol_obstack
);
3454 /* Process a N_ECOMM symbol. */
3457 common_block_end (objfile
)
3458 struct objfile
*objfile
;
3460 /* Symbols declared since the BCOMM are to have the common block
3461 start address added in when we know it. common_block and
3462 common_block_i point to the first symbol after the BCOMM in
3463 the local_symbols list; copy the list and hang it off the
3464 symbol for the common block name for later fixup. */
3467 struct pending
*new = 0;
3468 struct pending
*next
;
3471 if (common_block_name
== NULL
)
3473 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3478 sym
= (struct symbol
*)
3479 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3480 memset (sym
, 0, sizeof (struct symbol
));
3481 SYMBOL_NAME (sym
) = common_block_name
;
3482 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3484 /* Now we copy all the symbols which have been defined since the BCOMM. */
3486 /* Copy all the struct pendings before common_block. */
3487 for (next
= local_symbols
;
3488 next
!= NULL
&& next
!= common_block
;
3491 for (j
= 0; j
< next
->nsyms
; j
++)
3492 add_symbol_to_list (next
->symbol
[j
], &new);
3495 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3496 NULL, it means copy all the local symbols (which we already did
3499 if (common_block
!= NULL
)
3500 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3501 add_symbol_to_list (common_block
->symbol
[j
], &new);
3503 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long) new);
3505 /* Should we be putting local_symbols back to what it was?
3508 i
= hashname (SYMBOL_NAME (sym
));
3509 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3510 global_sym_chain
[i
] = sym
;
3511 common_block_name
= NULL
;
3514 /* Add a common block's start address to the offset of each symbol
3515 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3516 the common block name). */
3519 fix_common_block (sym
, valu
)
3523 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3524 for ( ; next
; next
= next
->next
)
3527 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3528 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3534 /* What about types defined as forward references inside of a small lexical
3536 /* Add a type to the list of undefined types to be checked through
3537 once this file has been read in. */
3540 add_undefined_type (type
)
3543 if (undef_types_length
== undef_types_allocated
)
3545 undef_types_allocated
*= 2;
3546 undef_types
= (struct type
**)
3547 xrealloc ((char *) undef_types
,
3548 undef_types_allocated
* sizeof (struct type
*));
3550 undef_types
[undef_types_length
++] = type
;
3553 /* Go through each undefined type, see if it's still undefined, and fix it
3554 up if possible. We have two kinds of undefined types:
3556 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3557 Fix: update array length using the element bounds
3558 and the target type's length.
3559 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3560 yet defined at the time a pointer to it was made.
3561 Fix: Do a full lookup on the struct/union tag. */
3563 cleanup_undefined_types ()
3567 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3569 switch (TYPE_CODE (*type
))
3572 case TYPE_CODE_STRUCT
:
3573 case TYPE_CODE_UNION
:
3574 case TYPE_CODE_ENUM
:
3576 /* Check if it has been defined since. Need to do this here
3577 as well as in check_stub_type to deal with the (legitimate in
3578 C though not C++) case of several types with the same name
3579 in different source files. */
3580 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3582 struct pending
*ppt
;
3584 /* Name of the type, without "struct" or "union" */
3585 char *typename
= TYPE_TAG_NAME (*type
);
3587 if (typename
== NULL
)
3589 static struct complaint msg
= {"need a type name", 0, 0};
3593 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3595 for (i
= 0; i
< ppt
->nsyms
; i
++)
3597 struct symbol
*sym
= ppt
->symbol
[i
];
3599 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3600 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3601 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3603 && STREQ (SYMBOL_NAME (sym
), typename
))
3605 memcpy (*type
, SYMBOL_TYPE (sym
),
3606 sizeof (struct type
));
3614 case TYPE_CODE_ARRAY
:
3616 /* This is a kludge which is here for historical reasons
3617 because I suspect that check_stub_type does not get
3618 called everywhere it needs to be called for arrays. Even
3619 with this kludge, those places are broken for the case
3620 where the stub type is defined in another compilation
3621 unit, but this kludge at least deals with it for the case
3622 in which it is the same compilation unit.
3624 Don't try to do this by calling check_stub_type; it might
3625 cause symbols to be read in lookup_symbol, and the symbol
3626 reader is not reentrant. */
3628 struct type
*range_type
;
3631 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3633 if (TYPE_NFIELDS (*type
) != 1)
3635 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3636 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3639 /* Now recompute the length of the array type, based on its
3640 number of elements and the target type's length. */
3641 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3642 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3643 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3644 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3646 /* If the target type is not a stub, we could be clearing
3647 TYPE_FLAG_TARGET_STUB for *type. */
3654 static struct complaint msg
= {"\
3655 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3656 complain (&msg
, TYPE_CODE (*type
));
3662 undef_types_length
= 0;
3665 /* Scan through all of the global symbols defined in the object file,
3666 assigning values to the debugging symbols that need to be assigned
3667 to. Get these symbols from the minimal symbol table. */
3670 scan_file_globals (objfile
)
3671 struct objfile
*objfile
;
3674 struct minimal_symbol
*msymbol
;
3675 struct symbol
*sym
, *prev
;
3677 if (objfile
->msymbols
== 0) /* Beware the null file. */
3680 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3686 /* Get the hash index and check all the symbols
3687 under that hash index. */
3689 hash
= hashname (SYMBOL_NAME (msymbol
));
3691 for (sym
= global_sym_chain
[hash
]; sym
;)
3693 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3694 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3696 /* Splice this symbol out of the hash chain and
3697 assign the value we have to it. */
3700 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3704 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3707 /* Check to see whether we need to fix up a common block. */
3708 /* Note: this code might be executed several times for
3709 the same symbol if there are multiple references. */
3711 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3713 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3717 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3722 sym
= SYMBOL_VALUE_CHAIN (prev
);
3726 sym
= global_sym_chain
[hash
];
3732 sym
= SYMBOL_VALUE_CHAIN (sym
);
3738 /* Initialize anything that needs initializing when starting to read
3739 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3747 /* Initialize anything that needs initializing when a completely new
3748 symbol file is specified (not just adding some symbols from another
3749 file, e.g. a shared library). */
3752 stabsread_new_init ()
3754 /* Empty the hash table of global syms looking for values. */
3755 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3758 /* Initialize anything that needs initializing at the same time as
3759 start_symtab() is called. */
3763 global_stabs
= NULL
; /* AIX COFF */
3764 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3765 n_this_object_header_files
= 1;
3766 type_vector_length
= 0;
3767 type_vector
= (struct type
**) 0;
3769 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3770 common_block_name
= NULL
;
3773 /* Call after end_symtab() */
3779 free ((char *) type_vector
);
3782 type_vector_length
= 0;
3783 previous_stab_code
= 0;
3787 finish_global_stabs (objfile
)
3788 struct objfile
*objfile
;
3792 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3793 free ((PTR
) global_stabs
);
3794 global_stabs
= NULL
;
3798 /* Initializer for this module */
3801 _initialize_stabsread ()
3803 undef_types_allocated
= 20;
3804 undef_types_length
= 0;
3805 undef_types
= (struct type
**)
3806 xmalloc (undef_types_allocated
* sizeof (struct type
*));