1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */
28 #include "gdb_string.h"
33 #include "expression.h"
36 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
38 #include "aout/aout64.h"
39 #include "gdb-stabs.h"
41 #include "complaints.h"
47 /* Ask stabsread.h to define the vars it normally declares `extern'. */
49 #include "stabsread.h" /* Our own declarations */
52 /* The routines that read and process a complete stabs for a C struct or
53 C++ class pass lists of data member fields and lists of member function
54 fields in an instance of a field_info structure, as defined below.
55 This is part of some reorganization of low level C++ support and is
56 expected to eventually go away... (FIXME) */
62 struct nextfield
*next
;
64 /* This is the raw visibility from the stab. It is not checked
65 for being one of the visibilities we recognize, so code which
66 examines this field better be able to deal. */
71 struct next_fnfieldlist
73 struct next_fnfieldlist
*next
;
74 struct fn_fieldlist fn_fieldlist
;
79 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
81 static long read_huge_number
PARAMS ((char **, int, int *));
83 static struct type
*error_type
PARAMS ((char **, struct objfile
*));
86 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
90 fix_common_block
PARAMS ((struct symbol
*, int));
93 read_type_number
PARAMS ((char **, int *));
96 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
99 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
102 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
105 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
108 rs6000_builtin_type
PARAMS ((int));
111 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
115 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
119 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
123 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
127 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
130 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
134 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
137 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
139 static struct type
**
140 read_args
PARAMS ((char **, int, struct objfile
*));
143 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
146 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
147 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
149 /* Define this as 1 if a pcc declaration of a char or short argument
150 gives the correct address. Otherwise assume pcc gives the
151 address of the corresponding int, which is not the same on a
152 big-endian machine. */
154 #ifndef BELIEVE_PCC_PROMOTION
155 #define BELIEVE_PCC_PROMOTION 0
158 struct complaint invalid_cpp_abbrev_complaint
=
159 {"invalid C++ abbreviation `%s'", 0, 0};
161 struct complaint invalid_cpp_type_complaint
=
162 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
164 struct complaint member_fn_complaint
=
165 {"member function type missing, got '%c'", 0, 0};
167 struct complaint const_vol_complaint
=
168 {"const/volatile indicator missing, got '%c'", 0, 0};
170 struct complaint error_type_complaint
=
171 {"debug info mismatch between compiler and debugger", 0, 0};
173 struct complaint invalid_member_complaint
=
174 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
176 struct complaint range_type_base_complaint
=
177 {"base type %d of range type is not defined", 0, 0};
179 struct complaint reg_value_complaint
=
180 {"register number %d too large (max %d) in symbol %s", 0, 0};
182 struct complaint vtbl_notfound_complaint
=
183 {"virtual function table pointer not found when defining class `%s'", 0, 0};
185 struct complaint unrecognized_cplus_name_complaint
=
186 {"Unknown C++ symbol name `%s'", 0, 0};
188 struct complaint rs6000_builtin_complaint
=
189 {"Unknown builtin type %d", 0, 0};
191 struct complaint unresolved_sym_chain_complaint
=
192 {"%s: common block `%s' from global_sym_chain unresolved", 0, 0};
194 struct complaint stabs_general_complaint
=
197 /* Make a list of forward references which haven't been defined. */
199 static struct type
**undef_types
;
200 static int undef_types_allocated
;
201 static int undef_types_length
;
202 static struct symbol
*current_symbol
= NULL
;
204 /* Check for and handle cretinous stabs symbol name continuation! */
205 #define STABS_CONTINUE(pp,objfile) \
207 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
208 *(pp) = next_symbol_text (objfile); \
211 /* FIXME: These probably should be our own types (like rs6000_builtin_type
212 has its own types) rather than builtin_type_*. */
213 static struct type
**os9k_type_vector
[] = {
219 &builtin_type_unsigned_char
,
220 &builtin_type_unsigned_short
,
221 &builtin_type_unsigned_long
,
222 &builtin_type_unsigned_int
,
224 &builtin_type_double
,
226 &builtin_type_long_double
229 static void os9k_init_type_vector
PARAMS ((struct type
**));
232 os9k_init_type_vector(tv
)
236 for (i
=0; i
<sizeof(os9k_type_vector
)/sizeof(struct type
**); i
++)
237 tv
[i
] = (os9k_type_vector
[i
] == 0 ? 0 : *(os9k_type_vector
[i
]));
240 /* Look up a dbx type-number pair. Return the address of the slot
241 where the type for that number-pair is stored.
242 The number-pair is in TYPENUMS.
244 This can be used for finding the type associated with that pair
245 or for associating a new type with the pair. */
248 dbx_lookup_type (typenums
)
251 register int filenum
= typenums
[0];
252 register int index
= typenums
[1];
254 register int real_filenum
;
255 register struct header_file
*f
;
258 if (filenum
== -1) /* -1,-1 is for temporary types. */
261 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
263 static struct complaint msg
= {"\
264 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
266 complain (&msg
, filenum
, index
, symnum
);
274 /* Caller wants address of address of type. We think
275 that negative (rs6k builtin) types will never appear as
276 "lvalues", (nor should they), so we stuff the real type
277 pointer into a temp, and return its address. If referenced,
278 this will do the right thing. */
279 static struct type
*temp_type
;
281 temp_type
= rs6000_builtin_type(index
);
285 /* Type is defined outside of header files.
286 Find it in this object file's type vector. */
287 if (index
>= type_vector_length
)
289 old_len
= type_vector_length
;
292 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
293 type_vector
= (struct type
**)
294 xmalloc (type_vector_length
* sizeof (struct type
*));
296 while (index
>= type_vector_length
)
298 type_vector_length
*= 2;
300 type_vector
= (struct type
**)
301 xrealloc ((char *) type_vector
,
302 (type_vector_length
* sizeof (struct type
*)));
303 memset (&type_vector
[old_len
], 0,
304 (type_vector_length
- old_len
) * sizeof (struct type
*));
307 /* Deal with OS9000 fundamental types. */
308 os9k_init_type_vector (type_vector
);
310 return (&type_vector
[index
]);
314 real_filenum
= this_object_header_files
[filenum
];
316 if (real_filenum
>= n_header_files
)
318 struct type
*temp_type
;
319 struct type
**temp_type_p
;
321 warning ("GDB internal error: bad real_filenum");
324 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
325 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
326 *temp_type_p
= temp_type
;
330 f
= &header_files
[real_filenum
];
332 f_orig_length
= f
->length
;
333 if (index
>= f_orig_length
)
335 while (index
>= f
->length
)
339 f
->vector
= (struct type
**)
340 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
341 memset (&f
->vector
[f_orig_length
], 0,
342 (f
->length
- f_orig_length
) * sizeof (struct type
*));
344 return (&f
->vector
[index
]);
348 /* Make sure there is a type allocated for type numbers TYPENUMS
349 and return the type object.
350 This can create an empty (zeroed) type object.
351 TYPENUMS may be (-1, -1) to return a new type object that is not
352 put into the type vector, and so may not be referred to by number. */
355 dbx_alloc_type (typenums
, objfile
)
357 struct objfile
*objfile
;
359 register struct type
**type_addr
;
361 if (typenums
[0] == -1)
363 return (alloc_type (objfile
));
366 type_addr
= dbx_lookup_type (typenums
);
368 /* If we are referring to a type not known at all yet,
369 allocate an empty type for it.
370 We will fill it in later if we find out how. */
373 *type_addr
= alloc_type (objfile
);
379 /* for all the stabs in a given stab vector, build appropriate types
380 and fix their symbols in given symbol vector. */
383 patch_block_stabs (symbols
, stabs
, objfile
)
384 struct pending
*symbols
;
385 struct pending_stabs
*stabs
;
386 struct objfile
*objfile
;
396 /* for all the stab entries, find their corresponding symbols and
397 patch their types! */
399 for (ii
= 0; ii
< stabs
->count
; ++ii
)
401 name
= stabs
->stab
[ii
];
402 pp
= (char*) strchr (name
, ':');
406 pp
= (char *)strchr(pp
, ':');
408 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
411 /* FIXME-maybe: it would be nice if we noticed whether
412 the variable was defined *anywhere*, not just whether
413 it is defined in this compilation unit. But neither
414 xlc or GCC seem to need such a definition, and until
415 we do psymtabs (so that the minimal symbols from all
416 compilation units are available now), I'm not sure
417 how to get the information. */
419 /* On xcoff, if a global is defined and never referenced,
420 ld will remove it from the executable. There is then
421 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
422 sym
= (struct symbol
*)
423 obstack_alloc (&objfile
->symbol_obstack
,
424 sizeof (struct symbol
));
426 memset (sym
, 0, sizeof (struct symbol
));
427 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
428 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
430 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
432 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
434 /* I don't think the linker does this with functions,
435 so as far as I know this is never executed.
436 But it doesn't hurt to check. */
438 lookup_function_type (read_type (&pp
, objfile
));
442 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
444 add_symbol_to_list (sym
, &global_symbols
);
449 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
452 lookup_function_type (read_type (&pp
, objfile
));
456 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
464 /* Read a number by which a type is referred to in dbx data,
465 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
466 Just a single number N is equivalent to (0,N).
467 Return the two numbers by storing them in the vector TYPENUMS.
468 TYPENUMS will then be used as an argument to dbx_lookup_type.
470 Returns 0 for success, -1 for error. */
473 read_type_number (pp
, typenums
)
475 register int *typenums
;
481 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
482 if (nbits
!= 0) return -1;
483 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
484 if (nbits
!= 0) return -1;
489 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
490 if (nbits
!= 0) return -1;
496 #if !defined (REG_STRUCT_HAS_ADDR)
497 #define REG_STRUCT_HAS_ADDR(gcc_p,type) 0
502 define_symbol (valu
, string
, desc
, type
, objfile
)
507 struct objfile
*objfile
;
509 register struct symbol
*sym
;
510 char *p
= (char *) strchr (string
, ':');
515 /* We would like to eliminate nameless symbols, but keep their types.
516 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
517 to type 2, but, should not create a symbol to address that type. Since
518 the symbol will be nameless, there is no way any user can refer to it. */
522 /* Ignore syms with empty names. */
526 /* Ignore old-style symbols from cc -go */
536 /* If a nameless stab entry, all we need is the type, not the symbol.
537 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
538 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
540 current_symbol
= sym
= (struct symbol
*)
541 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
542 memset (sym
, 0, sizeof (struct symbol
));
544 switch (type
& N_TYPE
)
547 SYMBOL_SECTION(sym
) = SECT_OFF_TEXT
;
550 SYMBOL_SECTION(sym
) = SECT_OFF_DATA
;
553 SYMBOL_SECTION(sym
) = SECT_OFF_BSS
;
557 if (processing_gcc_compilation
)
559 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
560 number of bytes occupied by a type or object, which we ignore. */
561 SYMBOL_LINE(sym
) = desc
;
565 SYMBOL_LINE(sym
) = 0; /* unknown */
568 if (is_cplus_marker (string
[0]))
570 /* Special GNU C++ names. */
574 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
575 &objfile
-> symbol_obstack
);
578 case 'v': /* $vtbl_ptr_type */
579 /* Was: SYMBOL_NAME (sym) = "vptr"; */
583 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
584 &objfile
-> symbol_obstack
);
588 /* This was an anonymous type that was never fixed up. */
591 #ifdef STATIC_TRANSFORM_NAME
593 /* SunPRO (3.0 at least) static variable encoding. */
598 complain (&unrecognized_cplus_name_complaint
, string
);
599 goto normal
; /* Do *something* with it */
605 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
606 SYMBOL_NAME (sym
) = (char *)
607 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
608 /* Open-coded memcpy--saves function call time. */
609 /* FIXME: Does it really? Try replacing with simple strcpy and
610 try it on an executable with a large symbol table. */
611 /* FIXME: considering that gcc can open code memcpy anyway, I
612 doubt it. xoxorich. */
614 register char *p1
= string
;
615 register char *p2
= SYMBOL_NAME (sym
);
623 /* If this symbol is from a C++ compilation, then attempt to cache the
624 demangled form for future reference. This is a typical time versus
625 space tradeoff, that was decided in favor of time because it sped up
626 C++ symbol lookups by a factor of about 20. */
628 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
632 /* Determine the type of name being defined. */
634 /* Getting GDB to correctly skip the symbol on an undefined symbol
635 descriptor and not ever dump core is a very dodgy proposition if
636 we do things this way. I say the acorn RISC machine can just
637 fix their compiler. */
638 /* The Acorn RISC machine's compiler can put out locals that don't
639 start with "234=" or "(3,4)=", so assume anything other than the
640 deftypes we know how to handle is a local. */
641 if (!strchr ("cfFGpPrStTvVXCR", *p
))
643 if (isdigit (*p
) || *p
== '(' || *p
== '-')
652 /* c is a special case, not followed by a type-number.
653 SYMBOL:c=iVALUE for an integer constant symbol.
654 SYMBOL:c=rVALUE for a floating constant symbol.
655 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
656 e.g. "b:c=e6,0" for "const b = blob1"
657 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
660 SYMBOL_CLASS (sym
) = LOC_CONST
;
661 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
662 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
663 add_symbol_to_list (sym
, &file_symbols
);
674 /* FIXME-if-picky-about-floating-accuracy: Should be using
675 target arithmetic to get the value. real.c in GCC
676 probably has the necessary code. */
678 /* FIXME: lookup_fundamental_type is a hack. We should be
679 creating a type especially for the type of float constants.
680 Problem is, what type should it be?
682 Also, what should the name of this type be? Should we
683 be using 'S' constants (see stabs.texinfo) instead? */
685 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
688 obstack_alloc (&objfile
-> symbol_obstack
,
689 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
690 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
691 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
692 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
697 /* Defining integer constants this way is kind of silly,
698 since 'e' constants allows the compiler to give not
699 only the value, but the type as well. C has at least
700 int, long, unsigned int, and long long as constant
701 types; other languages probably should have at least
702 unsigned as well as signed constants. */
704 /* We just need one int constant type for all objfiles.
705 It doesn't depend on languages or anything (arguably its
706 name should be a language-specific name for a type of
707 that size, but I'm inclined to say that if the compiler
708 wants a nice name for the type, it can use 'e'). */
709 static struct type
*int_const_type
;
711 /* Yes, this is as long as a *host* int. That is because we
713 if (int_const_type
== NULL
)
715 init_type (TYPE_CODE_INT
,
716 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
718 (struct objfile
*)NULL
);
719 SYMBOL_TYPE (sym
) = int_const_type
;
720 SYMBOL_VALUE (sym
) = atoi (p
);
721 SYMBOL_CLASS (sym
) = LOC_CONST
;
725 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
726 can be represented as integral.
727 e.g. "b:c=e6,0" for "const b = blob1"
728 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
730 SYMBOL_CLASS (sym
) = LOC_CONST
;
731 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
735 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
740 /* If the value is too big to fit in an int (perhaps because
741 it is unsigned), or something like that, we silently get
742 a bogus value. The type and everything else about it is
743 correct. Ideally, we should be using whatever we have
744 available for parsing unsigned and long long values,
746 SYMBOL_VALUE (sym
) = atoi (p
);
751 SYMBOL_CLASS (sym
) = LOC_CONST
;
752 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
755 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
756 add_symbol_to_list (sym
, &file_symbols
);
760 /* The name of a caught exception. */
761 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
762 SYMBOL_CLASS (sym
) = LOC_LABEL
;
763 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
764 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
765 add_symbol_to_list (sym
, &local_symbols
);
769 /* A static function definition. */
770 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
771 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
772 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
773 add_symbol_to_list (sym
, &file_symbols
);
774 /* fall into process_function_types. */
776 process_function_types
:
777 /* Function result types are described as the result type in stabs.
778 We need to convert this to the function-returning-type-X type
779 in GDB. E.g. "int" is converted to "function returning int". */
780 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
781 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
782 /* fall into process_prototype_types */
784 process_prototype_types
:
785 /* Sun acc puts declared types of arguments here. We don't care
786 about their actual types (FIXME -- we should remember the whole
787 function prototype), but the list may define some new types
788 that we have to remember, so we must scan it now. */
791 read_type (&p
, objfile
);
796 /* A global function definition. */
797 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
798 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
799 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
800 add_symbol_to_list (sym
, &global_symbols
);
801 goto process_function_types
;
804 /* For a class G (global) symbol, it appears that the
805 value is not correct. It is necessary to search for the
806 corresponding linker definition to find the value.
807 These definitions appear at the end of the namelist. */
808 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
809 i
= hashname (SYMBOL_NAME (sym
));
810 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
811 global_sym_chain
[i
] = sym
;
812 SYMBOL_CLASS (sym
) = LOC_STATIC
;
813 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
814 add_symbol_to_list (sym
, &global_symbols
);
817 /* This case is faked by a conditional above,
818 when there is no code letter in the dbx data.
819 Dbx data never actually contains 'l'. */
822 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
823 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
824 SYMBOL_VALUE (sym
) = valu
;
825 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
826 add_symbol_to_list (sym
, &local_symbols
);
831 /* pF is a two-letter code that means a function parameter in Fortran.
832 The type-number specifies the type of the return value.
833 Translate it into a pointer-to-function type. */
837 = lookup_pointer_type
838 (lookup_function_type (read_type (&p
, objfile
)));
841 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
843 /* Normally this is a parameter, a LOC_ARG. On the i960, it
844 can also be a LOC_LOCAL_ARG depending on symbol type. */
845 #ifndef DBX_PARM_SYMBOL_CLASS
846 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
849 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
850 SYMBOL_VALUE (sym
) = valu
;
851 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
852 add_symbol_to_list (sym
, &local_symbols
);
854 if (TARGET_BYTE_ORDER
!= BIG_ENDIAN
)
856 /* On little-endian machines, this crud is never necessary,
857 and, if the extra bytes contain garbage, is harmful. */
861 /* If it's gcc-compiled, if it says `short', believe it. */
862 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
865 #if !BELIEVE_PCC_PROMOTION
867 /* This is the signed type which arguments get promoted to. */
868 static struct type
*pcc_promotion_type
;
869 /* This is the unsigned type which arguments get promoted to. */
870 static struct type
*pcc_unsigned_promotion_type
;
872 /* Call it "int" because this is mainly C lossage. */
873 if (pcc_promotion_type
== NULL
)
875 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
878 if (pcc_unsigned_promotion_type
== NULL
)
879 pcc_unsigned_promotion_type
=
880 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
881 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
883 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
884 /* This macro is defined on machines (e.g. sparc) where
885 we should believe the type of a PCC 'short' argument,
886 but shouldn't believe the address (the address is
887 the address of the corresponding int).
889 My guess is that this correction, as opposed to changing
890 the parameter to an 'int' (as done below, for PCC
891 on most machines), is the right thing to do
892 on all machines, but I don't want to risk breaking
893 something that already works. On most PCC machines,
894 the sparc problem doesn't come up because the calling
895 function has to zero the top bytes (not knowing whether
896 the called function wants an int or a short), so there
897 is little practical difference between an int and a short
898 (except perhaps what happens when the GDB user types
899 "print short_arg = 0x10000;").
901 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
902 actually produces the correct address (we don't need to fix it
903 up). I made this code adapt so that it will offset the symbol
904 if it was pointing at an int-aligned location and not
905 otherwise. This way you can use the same gdb for 4.0.x and
908 If the parameter is shorter than an int, and is integral
909 (e.g. char, short, or unsigned equivalent), and is claimed to
910 be passed on an integer boundary, don't believe it! Offset the
911 parameter's address to the tail-end of that integer. */
913 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
914 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
915 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
917 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
918 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
922 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
924 /* If PCC says a parameter is a short or a char,
925 it is really an int. */
926 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
927 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
930 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
931 ? pcc_unsigned_promotion_type
932 : pcc_promotion_type
;
936 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
938 #endif /* !BELIEVE_PCC_PROMOTION. */
941 /* acc seems to use P to declare the prototypes of functions that
942 are referenced by this file. gdb is not prepared to deal
943 with this extra information. FIXME, it ought to. */
946 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
947 goto process_prototype_types
;
952 /* Parameter which is in a register. */
953 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
954 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
955 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
956 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
958 complain (®_value_complaint
, SYMBOL_VALUE (sym
), NUM_REGS
,
959 SYMBOL_SOURCE_NAME (sym
));
960 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
962 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
963 add_symbol_to_list (sym
, &local_symbols
);
967 /* Register variable (either global or local). */
968 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
969 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
970 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
971 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
973 complain (®_value_complaint
, SYMBOL_VALUE (sym
), NUM_REGS
,
974 SYMBOL_SOURCE_NAME (sym
));
975 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
977 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
980 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
981 name to represent an argument passed in a register.
982 GCC uses 'P' for the same case. So if we find such a symbol pair
983 we combine it into one 'P' symbol. For Sun cc we need to do this
984 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
985 the 'p' symbol even if it never saves the argument onto the stack.
987 On most machines, we want to preserve both symbols, so that
988 we can still get information about what is going on with the
989 stack (VAX for computing args_printed, using stack slots instead
990 of saved registers in backtraces, etc.).
992 Note that this code illegally combines
993 main(argc) struct foo argc; { register struct foo argc; }
994 but this case is considered pathological and causes a warning
995 from a decent compiler. */
998 && local_symbols
->nsyms
> 0
999 #ifndef USE_REGISTER_NOT_ARG
1000 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1002 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1003 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
1004 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_SET
1005 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_BITSTRING
)
1009 struct symbol
*prev_sym
;
1010 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1011 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1012 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1013 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
1015 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1016 /* Use the type from the LOC_REGISTER; that is the type
1017 that is actually in that register. */
1018 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1019 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1024 add_symbol_to_list (sym
, &local_symbols
);
1027 add_symbol_to_list (sym
, &file_symbols
);
1031 /* Static symbol at top level of file */
1032 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1033 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1034 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1035 #ifdef STATIC_TRANSFORM_NAME
1036 if (SYMBOL_NAME (sym
)[0] == '$')
1038 struct minimal_symbol
*msym
;
1039 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1042 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1043 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1047 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1048 add_symbol_to_list (sym
, &file_symbols
);
1052 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1054 /* For a nameless type, we don't want a create a symbol, thus we
1055 did not use `sym'. Return without further processing. */
1056 if (nameless
) return NULL
;
1058 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1059 SYMBOL_VALUE (sym
) = valu
;
1060 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1061 /* C++ vagaries: we may have a type which is derived from
1062 a base type which did not have its name defined when the
1063 derived class was output. We fill in the derived class's
1064 base part member's name here in that case. */
1065 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1066 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1067 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1068 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1071 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1072 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1073 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1074 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1077 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1079 /* gcc-2.6 or later (when using -fvtable-thunks)
1080 emits a unique named type for a vtable entry.
1081 Some gdb code depends on that specific name. */
1082 extern const char vtbl_ptr_name
[];
1084 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1085 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1086 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1088 /* If we are giving a name to a type such as "pointer to
1089 foo" or "function returning foo", we better not set
1090 the TYPE_NAME. If the program contains "typedef char
1091 *caddr_t;", we don't want all variables of type char
1092 * to print as caddr_t. This is not just a
1093 consequence of GDB's type management; PCC and GCC (at
1094 least through version 2.4) both output variables of
1095 either type char * or caddr_t with the type number
1096 defined in the 't' symbol for caddr_t. If a future
1097 compiler cleans this up it GDB is not ready for it
1098 yet, but if it becomes ready we somehow need to
1099 disable this check (without breaking the PCC/GCC2.4
1104 Fortunately, this check seems not to be necessary
1105 for anything except pointers or functions. */
1108 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1111 add_symbol_to_list (sym
, &file_symbols
);
1115 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1116 by 't' which means we are typedef'ing it as well. */
1117 synonym
= *p
== 't';
1121 /* The semantics of C++ state that "struct foo { ... }" also defines
1122 a typedef for "foo". Unfortunately, cfront never makes the typedef
1123 when translating C++ into C. We make the typedef here so that
1124 "ptype foo" works as expected for cfront translated code. */
1125 else if (current_subfile
->language
== language_cplus
)
1128 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1130 /* For a nameless type, we don't want a create a symbol, thus we
1131 did not use `sym'. Return without further processing. */
1132 if (nameless
) return NULL
;
1134 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1135 SYMBOL_VALUE (sym
) = valu
;
1136 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1137 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1138 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1139 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1140 add_symbol_to_list (sym
, &file_symbols
);
1144 /* Clone the sym and then modify it. */
1145 register struct symbol
*typedef_sym
= (struct symbol
*)
1146 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1147 *typedef_sym
= *sym
;
1148 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1149 SYMBOL_VALUE (typedef_sym
) = valu
;
1150 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1151 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1152 TYPE_NAME (SYMBOL_TYPE (sym
))
1153 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1154 add_symbol_to_list (typedef_sym
, &file_symbols
);
1159 /* Static symbol of local scope */
1160 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1161 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1162 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1163 #ifdef STATIC_TRANSFORM_NAME
1164 if (SYMBOL_NAME (sym
)[0] == '$')
1166 struct minimal_symbol
*msym
;
1167 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1170 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1171 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1175 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1177 add_symbol_to_list (sym
, &global_symbols
);
1179 add_symbol_to_list (sym
, &local_symbols
);
1183 /* Reference parameter */
1184 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1185 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1186 SYMBOL_VALUE (sym
) = valu
;
1187 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1188 add_symbol_to_list (sym
, &local_symbols
);
1192 /* Reference parameter which is in a register. */
1193 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1194 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1195 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1196 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
1198 complain (®_value_complaint
, SYMBOL_VALUE (sym
), NUM_REGS
,
1199 SYMBOL_SOURCE_NAME (sym
));
1200 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1202 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1203 add_symbol_to_list (sym
, &local_symbols
);
1207 /* This is used by Sun FORTRAN for "function result value".
1208 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1209 that Pascal uses it too, but when I tried it Pascal used
1210 "x:3" (local symbol) instead. */
1211 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1212 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1213 SYMBOL_VALUE (sym
) = valu
;
1214 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1215 add_symbol_to_list (sym
, &local_symbols
);
1219 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1220 SYMBOL_CLASS (sym
) = LOC_CONST
;
1221 SYMBOL_VALUE (sym
) = 0;
1222 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1223 add_symbol_to_list (sym
, &file_symbols
);
1227 /* When passing structures to a function, some systems sometimes pass
1228 the address in a register, not the structure itself. */
1230 if (REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1232 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1233 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1234 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_BITSTRING
)
1235 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_SET
)))
1237 /* If REG_STRUCT_HAS_ADDR yields non-zero we have to
1238 convert LOC_REGPARM to LOC_REGPARM_ADDR for structures and unions. */
1239 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
)
1240 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1241 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1242 subsequent arguments on the sparc, for example). */
1243 else if (SYMBOL_CLASS (sym
) == LOC_ARG
)
1244 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1251 /* Skip rest of this symbol and return an error type.
1253 General notes on error recovery: error_type always skips to the
1254 end of the symbol (modulo cretinous dbx symbol name continuation).
1255 Thus code like this:
1257 if (*(*pp)++ != ';')
1258 return error_type (pp, objfile);
1260 is wrong because if *pp starts out pointing at '\0' (typically as the
1261 result of an earlier error), it will be incremented to point to the
1262 start of the next symbol, which might produce strange results, at least
1263 if you run off the end of the string table. Instead use
1266 return error_type (pp, objfile);
1272 foo = error_type (pp, objfile);
1276 And in case it isn't obvious, the point of all this hair is so the compiler
1277 can define new types and new syntaxes, and old versions of the
1278 debugger will be able to read the new symbol tables. */
1280 static struct type
*
1281 error_type (pp
, objfile
)
1283 struct objfile
*objfile
;
1285 complain (&error_type_complaint
);
1288 /* Skip to end of symbol. */
1289 while (**pp
!= '\0')
1294 /* Check for and handle cretinous dbx symbol name continuation! */
1295 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1297 *pp
= next_symbol_text (objfile
);
1304 return (builtin_type_error
);
1308 /* Read type information or a type definition; return the type. Even
1309 though this routine accepts either type information or a type
1310 definition, the distinction is relevant--some parts of stabsread.c
1311 assume that type information starts with a digit, '-', or '(' in
1312 deciding whether to call read_type. */
1315 read_type (pp
, objfile
)
1317 struct objfile
*objfile
;
1319 register struct type
*type
= 0;
1323 char type_descriptor
;
1325 /* Size in bits of type if specified by a type attribute, or -1 if
1326 there is no size attribute. */
1329 /* Used to distinguish string and bitstring from char-array and set. */
1332 /* Read type number if present. The type number may be omitted.
1333 for instance in a two-dimensional array declared with type
1334 "ar1;1;10;ar1;1;10;4". */
1335 if ((**pp
>= '0' && **pp
<= '9')
1339 if (read_type_number (pp
, typenums
) != 0)
1340 return error_type (pp
, objfile
);
1342 /* Type is not being defined here. Either it already exists,
1343 or this is a forward reference to it. dbx_alloc_type handles
1346 return dbx_alloc_type (typenums
, objfile
);
1348 /* Type is being defined here. */
1350 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1356 /* 'typenums=' not present, type is anonymous. Read and return
1357 the definition, but don't put it in the type vector. */
1358 typenums
[0] = typenums
[1] = -1;
1363 type_descriptor
= (*pp
)[-1];
1364 switch (type_descriptor
)
1368 enum type_code code
;
1370 /* Used to index through file_symbols. */
1371 struct pending
*ppt
;
1374 /* Name including "struct", etc. */
1378 char *from
, *to
, *p
, *q1
, *q2
;
1380 /* Set the type code according to the following letter. */
1384 code
= TYPE_CODE_STRUCT
;
1387 code
= TYPE_CODE_UNION
;
1390 code
= TYPE_CODE_ENUM
;
1394 /* Complain and keep going, so compilers can invent new
1395 cross-reference types. */
1396 static struct complaint msg
=
1397 {"Unrecognized cross-reference type `%c'", 0, 0};
1398 complain (&msg
, (*pp
)[0]);
1399 code
= TYPE_CODE_STRUCT
;
1404 q1
= strchr(*pp
, '<');
1405 p
= strchr(*pp
, ':');
1407 return error_type (pp
, objfile
);
1408 while (q1
&& p
> q1
&& p
[1] == ':')
1410 q2
= strchr(q1
, '>');
1416 return error_type (pp
, objfile
);
1419 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1421 /* Copy the name. */
1427 /* Set the pointer ahead of the name which we just read, and
1432 /* Now check to see whether the type has already been
1433 declared. This was written for arrays of cross-referenced
1434 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1435 sure it is not necessary anymore. But it might be a good
1436 idea, to save a little memory. */
1438 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1439 for (i
= 0; i
< ppt
->nsyms
; i
++)
1441 struct symbol
*sym
= ppt
->symbol
[i
];
1443 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1444 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1445 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1446 && STREQ (SYMBOL_NAME (sym
), type_name
))
1448 obstack_free (&objfile
-> type_obstack
, type_name
);
1449 type
= SYMBOL_TYPE (sym
);
1454 /* Didn't find the type to which this refers, so we must
1455 be dealing with a forward reference. Allocate a type
1456 structure for it, and keep track of it so we can
1457 fill in the rest of the fields when we get the full
1459 type
= dbx_alloc_type (typenums
, objfile
);
1460 TYPE_CODE (type
) = code
;
1461 TYPE_TAG_NAME (type
) = type_name
;
1462 INIT_CPLUS_SPECIFIC(type
);
1463 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1465 add_undefined_type (type
);
1469 case '-': /* RS/6000 built-in type */
1483 /* We deal with something like t(1,2)=(3,4)=... which
1484 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1486 /* Allocate and enter the typedef type first.
1487 This handles recursive types. */
1488 type
= dbx_alloc_type (typenums
, objfile
);
1489 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1490 { struct type
*xtype
= read_type (pp
, objfile
);
1493 /* It's being defined as itself. That means it is "void". */
1494 TYPE_CODE (type
) = TYPE_CODE_VOID
;
1495 TYPE_LENGTH (type
) = 1;
1497 else if (type_size
>= 0 || is_string
)
1500 TYPE_NAME (type
) = NULL
;
1501 TYPE_TAG_NAME (type
) = NULL
;
1505 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1506 TYPE_TARGET_TYPE (type
) = xtype
;
1511 /* In the following types, we must be sure to overwrite any existing
1512 type that the typenums refer to, rather than allocating a new one
1513 and making the typenums point to the new one. This is because there
1514 may already be pointers to the existing type (if it had been
1515 forward-referenced), and we must change it to a pointer, function,
1516 reference, or whatever, *in-place*. */
1519 type1
= read_type (pp
, objfile
);
1520 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1523 case '&': /* Reference to another type */
1524 type1
= read_type (pp
, objfile
);
1525 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1528 case 'f': /* Function returning another type */
1529 if (os9k_stabs
&& **pp
== '(')
1531 /* Function prototype; parse it.
1532 We must conditionalize this on os9k_stabs because otherwise
1533 it could be confused with a Sun-style (1,3) typenumber
1539 t
= read_type(pp
, objfile
);
1540 if (**pp
== ',') ++*pp
;
1543 type1
= read_type (pp
, objfile
);
1544 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1547 case 'k': /* Const qualifier on some type (Sun) */
1548 case 'c': /* Const qualifier on some type (OS9000) */
1549 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1550 only accept 'c' in the os9k_stabs case. */
1551 if (type_descriptor
== 'c' && !os9k_stabs
)
1552 return error_type (pp
, objfile
);
1553 type
= read_type (pp
, objfile
);
1554 /* FIXME! For now, we ignore const and volatile qualifiers. */
1557 case 'B': /* Volatile qual on some type (Sun) */
1558 case 'i': /* Volatile qual on some type (OS9000) */
1559 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1560 only accept 'i' in the os9k_stabs case. */
1561 if (type_descriptor
== 'i' && !os9k_stabs
)
1562 return error_type (pp
, objfile
);
1563 type
= read_type (pp
, objfile
);
1564 /* FIXME! For now, we ignore const and volatile qualifiers. */
1568 if (isdigit (**pp
) || **pp
== '(' || **pp
== '-')
1569 { /* Member (class & variable) type */
1570 /* FIXME -- we should be doing smash_to_XXX types here. */
1572 struct type
*domain
= read_type (pp
, objfile
);
1573 struct type
*memtype
;
1576 /* Invalid member type data format. */
1577 return error_type (pp
, objfile
);
1580 memtype
= read_type (pp
, objfile
);
1581 type
= dbx_alloc_type (typenums
, objfile
);
1582 smash_to_member_type (type
, domain
, memtype
);
1584 else /* type attribute */
1587 /* Skip to the semicolon. */
1588 while (**pp
!= ';' && **pp
!= '\0')
1591 return error_type (pp
, objfile
);
1593 ++*pp
; /* Skip the semicolon. */
1598 type_size
= atoi (attr
+ 1);
1608 /* Ignore unrecognized type attributes, so future compilers
1609 can invent new ones. */
1617 case '#': /* Method (class & fn) type */
1618 if ((*pp
)[0] == '#')
1620 /* We'll get the parameter types from the name. */
1621 struct type
*return_type
;
1624 return_type
= read_type (pp
, objfile
);
1625 if (*(*pp
)++ != ';')
1626 complain (&invalid_member_complaint
, symnum
);
1627 type
= allocate_stub_method (return_type
);
1628 if (typenums
[0] != -1)
1629 *dbx_lookup_type (typenums
) = type
;
1633 struct type
*domain
= read_type (pp
, objfile
);
1634 struct type
*return_type
;
1638 /* Invalid member type data format. */
1639 return error_type (pp
, objfile
);
1643 return_type
= read_type (pp
, objfile
);
1644 args
= read_args (pp
, ';', objfile
);
1645 type
= dbx_alloc_type (typenums
, objfile
);
1646 smash_to_method_type (type
, domain
, return_type
, args
);
1650 case 'r': /* Range type */
1651 type
= read_range_type (pp
, typenums
, objfile
);
1652 if (typenums
[0] != -1)
1653 *dbx_lookup_type (typenums
) = type
;
1658 /* Const and volatile qualified type. */
1659 type
= read_type (pp
, objfile
);
1662 /* Sun ACC builtin int type */
1663 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1664 if (typenums
[0] != -1)
1665 *dbx_lookup_type (typenums
) = type
;
1669 case 'R': /* Sun ACC builtin float type */
1670 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1671 if (typenums
[0] != -1)
1672 *dbx_lookup_type (typenums
) = type
;
1675 case 'e': /* Enumeration type */
1676 type
= dbx_alloc_type (typenums
, objfile
);
1677 type
= read_enum_type (pp
, type
, objfile
);
1678 if (typenums
[0] != -1)
1679 *dbx_lookup_type (typenums
) = type
;
1682 case 's': /* Struct type */
1683 case 'u': /* Union type */
1684 type
= dbx_alloc_type (typenums
, objfile
);
1685 switch (type_descriptor
)
1688 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1691 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1694 type
= read_struct_type (pp
, type
, objfile
);
1697 case 'a': /* Array type */
1699 return error_type (pp
, objfile
);
1702 type
= dbx_alloc_type (typenums
, objfile
);
1703 type
= read_array_type (pp
, type
, objfile
);
1705 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1709 type1
= read_type (pp
, objfile
);
1710 type
= create_set_type ((struct type
*) NULL
, type1
);
1712 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1713 if (typenums
[0] != -1)
1714 *dbx_lookup_type (typenums
) = type
;
1718 --*pp
; /* Go back to the symbol in error */
1719 /* Particularly important if it was \0! */
1720 return error_type (pp
, objfile
);
1725 warning ("GDB internal error, type is NULL in stabsread.c\n");
1726 return error_type (pp
, objfile
);
1729 /* Size specified in a type attribute overrides any other size. */
1730 if (type_size
!= -1)
1731 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1736 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1737 Return the proper type node for a given builtin type number. */
1739 static struct type
*
1740 rs6000_builtin_type (typenum
)
1743 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1744 #define NUMBER_RECOGNIZED 34
1745 /* This includes an empty slot for type number -0. */
1746 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1747 struct type
*rettype
= NULL
;
1749 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1751 complain (&rs6000_builtin_complaint
, typenum
);
1752 return builtin_type_error
;
1754 if (negative_types
[-typenum
] != NULL
)
1755 return negative_types
[-typenum
];
1757 #if TARGET_CHAR_BIT != 8
1758 #error This code wrong for TARGET_CHAR_BIT not 8
1759 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1760 that if that ever becomes not true, the correct fix will be to
1761 make the size in the struct type to be in bits, not in units of
1768 /* The size of this and all the other types are fixed, defined
1769 by the debugging format. If there is a type called "int" which
1770 is other than 32 bits, then it should use a new negative type
1771 number (or avoid negative type numbers for that case).
1772 See stabs.texinfo. */
1773 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1776 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1779 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1782 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1785 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1786 "unsigned char", NULL
);
1789 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1792 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1793 "unsigned short", NULL
);
1796 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1797 "unsigned int", NULL
);
1800 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1803 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1804 "unsigned long", NULL
);
1807 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1810 /* IEEE single precision (32 bit). */
1811 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1814 /* IEEE double precision (64 bit). */
1815 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1818 /* This is an IEEE double on the RS/6000, and different machines with
1819 different sizes for "long double" should use different negative
1820 type numbers. See stabs.texinfo. */
1821 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1824 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1827 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1831 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1834 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1837 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1840 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1844 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1848 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1852 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1856 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1860 /* Complex type consisting of two IEEE single precision values. */
1861 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1864 /* Complex type consisting of two IEEE double precision values. */
1865 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1868 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1871 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1874 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1877 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1880 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1883 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1884 "unsigned long long", NULL
);
1887 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1891 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1894 negative_types
[-typenum
] = rettype
;
1898 /* This page contains subroutines of read_type. */
1900 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1901 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1902 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1903 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1905 /* Read member function stabs info for C++ classes. The form of each member
1908 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1910 An example with two member functions is:
1912 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1914 For the case of overloaded operators, the format is op$::*.funcs, where
1915 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1916 name (such as `+=') and `.' marks the end of the operator name.
1918 Returns 1 for success, 0 for failure. */
1921 read_member_functions (fip
, pp
, type
, objfile
)
1922 struct field_info
*fip
;
1925 struct objfile
*objfile
;
1929 /* Total number of member functions defined in this class. If the class
1930 defines two `f' functions, and one `g' function, then this will have
1932 int total_length
= 0;
1936 struct next_fnfield
*next
;
1937 struct fn_field fn_field
;
1939 struct type
*look_ahead_type
;
1940 struct next_fnfieldlist
*new_fnlist
;
1941 struct next_fnfield
*new_sublist
;
1945 /* Process each list until we find something that is not a member function
1946 or find the end of the functions. */
1950 /* We should be positioned at the start of the function name.
1951 Scan forward to find the first ':' and if it is not the
1952 first of a "::" delimiter, then this is not a member function. */
1964 look_ahead_type
= NULL
;
1967 new_fnlist
= (struct next_fnfieldlist
*)
1968 xmalloc (sizeof (struct next_fnfieldlist
));
1969 make_cleanup (free
, new_fnlist
);
1970 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1972 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && is_cplus_marker ((*pp
)[2]))
1974 /* This is a completely wierd case. In order to stuff in the
1975 names that might contain colons (the usual name delimiter),
1976 Mike Tiemann defined a different name format which is
1977 signalled if the identifier is "op$". In that case, the
1978 format is "op$::XXXX." where XXXX is the name. This is
1979 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1980 /* This lets the user type "break operator+".
1981 We could just put in "+" as the name, but that wouldn't
1983 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1984 char *o
= opname
+ 3;
1986 /* Skip past '::'. */
1989 STABS_CONTINUE (pp
, objfile
);
1995 main_fn_name
= savestring (opname
, o
- opname
);
2001 main_fn_name
= savestring (*pp
, p
- *pp
);
2002 /* Skip past '::'. */
2005 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2010 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2011 make_cleanup (free
, new_sublist
);
2012 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2014 /* Check for and handle cretinous dbx symbol name continuation! */
2015 if (look_ahead_type
== NULL
)
2018 STABS_CONTINUE (pp
, objfile
);
2020 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2023 /* Invalid symtab info for member function. */
2029 /* g++ version 1 kludge */
2030 new_sublist
-> fn_field
.type
= look_ahead_type
;
2031 look_ahead_type
= NULL
;
2041 /* If this is just a stub, then we don't have the real name here. */
2043 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2045 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2046 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2047 new_sublist
-> fn_field
.is_stub
= 1;
2049 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2052 /* Set this member function's visibility fields. */
2055 case VISIBILITY_PRIVATE
:
2056 new_sublist
-> fn_field
.is_private
= 1;
2058 case VISIBILITY_PROTECTED
:
2059 new_sublist
-> fn_field
.is_protected
= 1;
2063 STABS_CONTINUE (pp
, objfile
);
2066 case 'A': /* Normal functions. */
2067 new_sublist
-> fn_field
.is_const
= 0;
2068 new_sublist
-> fn_field
.is_volatile
= 0;
2071 case 'B': /* `const' member functions. */
2072 new_sublist
-> fn_field
.is_const
= 1;
2073 new_sublist
-> fn_field
.is_volatile
= 0;
2076 case 'C': /* `volatile' member function. */
2077 new_sublist
-> fn_field
.is_const
= 0;
2078 new_sublist
-> fn_field
.is_volatile
= 1;
2081 case 'D': /* `const volatile' member function. */
2082 new_sublist
-> fn_field
.is_const
= 1;
2083 new_sublist
-> fn_field
.is_volatile
= 1;
2086 case '*': /* File compiled with g++ version 1 -- no info */
2091 complain (&const_vol_complaint
, **pp
);
2100 /* virtual member function, followed by index.
2101 The sign bit is set to distinguish pointers-to-methods
2102 from virtual function indicies. Since the array is
2103 in words, the quantity must be shifted left by 1
2104 on 16 bit machine, and by 2 on 32 bit machine, forcing
2105 the sign bit out, and usable as a valid index into
2106 the array. Remove the sign bit here. */
2107 new_sublist
-> fn_field
.voffset
=
2108 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2112 STABS_CONTINUE (pp
, objfile
);
2113 if (**pp
== ';' || **pp
== '\0')
2115 /* Must be g++ version 1. */
2116 new_sublist
-> fn_field
.fcontext
= 0;
2120 /* Figure out from whence this virtual function came.
2121 It may belong to virtual function table of
2122 one of its baseclasses. */
2123 look_ahead_type
= read_type (pp
, objfile
);
2126 /* g++ version 1 overloaded methods. */
2130 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2139 look_ahead_type
= NULL
;
2145 /* static member function. */
2146 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2147 if (strncmp (new_sublist
-> fn_field
.physname
,
2148 main_fn_name
, strlen (main_fn_name
)))
2150 new_sublist
-> fn_field
.is_stub
= 1;
2156 complain (&member_fn_complaint
, (*pp
)[-1]);
2157 /* Fall through into normal member function. */
2160 /* normal member function. */
2161 new_sublist
-> fn_field
.voffset
= 0;
2162 new_sublist
-> fn_field
.fcontext
= 0;
2166 new_sublist
-> next
= sublist
;
2167 sublist
= new_sublist
;
2169 STABS_CONTINUE (pp
, objfile
);
2171 while (**pp
!= ';' && **pp
!= '\0');
2175 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2176 obstack_alloc (&objfile
-> type_obstack
,
2177 sizeof (struct fn_field
) * length
);
2178 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2179 sizeof (struct fn_field
) * length
);
2180 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2182 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2185 new_fnlist
-> fn_fieldlist
.length
= length
;
2186 new_fnlist
-> next
= fip
-> fnlist
;
2187 fip
-> fnlist
= new_fnlist
;
2189 total_length
+= length
;
2190 STABS_CONTINUE (pp
, objfile
);
2195 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2196 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2197 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2198 memset (TYPE_FN_FIELDLISTS (type
), 0,
2199 sizeof (struct fn_fieldlist
) * nfn_fields
);
2200 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2201 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2207 /* Special GNU C++ name.
2209 Returns 1 for success, 0 for failure. "failure" means that we can't
2210 keep parsing and it's time for error_type(). */
2213 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2214 struct field_info
*fip
;
2217 struct objfile
*objfile
;
2222 struct type
*context
;
2232 /* At this point, *pp points to something like "22:23=*22...",
2233 where the type number before the ':' is the "context" and
2234 everything after is a regular type definition. Lookup the
2235 type, find it's name, and construct the field name. */
2237 context
= read_type (pp
, objfile
);
2241 case 'f': /* $vf -- a virtual function table pointer */
2242 fip
->list
->field
.name
=
2243 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2246 case 'b': /* $vb -- a virtual bsomethingorother */
2247 name
= type_name_no_tag (context
);
2250 complain (&invalid_cpp_type_complaint
, symnum
);
2253 fip
->list
->field
.name
=
2254 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2258 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2259 fip
->list
->field
.name
=
2260 obconcat (&objfile
->type_obstack
,
2261 "INVALID_CPLUSPLUS_ABBREV", "", "");
2265 /* At this point, *pp points to the ':'. Skip it and read the
2271 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2274 fip
->list
->field
.type
= read_type (pp
, objfile
);
2276 (*pp
)++; /* Skip the comma. */
2282 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2286 /* This field is unpacked. */
2287 fip
->list
->field
.bitsize
= 0;
2288 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2292 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2293 /* We have no idea what syntax an unrecognized abbrev would have, so
2294 better return 0. If we returned 1, we would need to at least advance
2295 *pp to avoid an infinite loop. */
2302 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2303 struct field_info
*fip
;
2307 struct objfile
*objfile
;
2309 /* The following is code to work around cfront generated stabs.
2310 The stabs contains full mangled name for each field.
2311 We try to demangle the name and extract the field name out of it.
2313 if (ARM_DEMANGLING
&& current_subfile
->language
== language_cplus
)
2319 dem
= cplus_demangle (*pp
, DMGL_ANSI
| DMGL_PARAMS
);
2322 dem_p
= strrchr (dem
, ':');
2323 if (dem_p
!= 0 && *(dem_p
-1)==':')
2325 fip
->list
->field
.name
=
2326 obsavestring (dem_p
, strlen(dem_p
), &objfile
-> type_obstack
);
2330 fip
->list
->field
.name
=
2331 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2335 /* end of code for cfront work around */
2338 fip
-> list
-> field
.name
=
2339 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2342 /* This means we have a visibility for a field coming. */
2346 fip
-> list
-> visibility
= *(*pp
)++;
2350 /* normal dbx-style format, no explicit visibility */
2351 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2354 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2359 /* Possible future hook for nested types. */
2362 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2368 /* Static class member. */
2369 fip
-> list
-> field
.bitpos
= (long) -1;
2375 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2379 else if (**pp
!= ',')
2381 /* Bad structure-type format. */
2382 complain (&stabs_general_complaint
, "bad structure-type format");
2386 (*pp
)++; /* Skip the comma. */
2390 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2393 complain (&stabs_general_complaint
, "bad structure-type format");
2396 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2399 complain (&stabs_general_complaint
, "bad structure-type format");
2404 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2406 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2407 it is a field which has been optimized out. The correct stab for
2408 this case is to use VISIBILITY_IGNORE, but that is a recent
2409 invention. (2) It is a 0-size array. For example
2410 union { int num; char str[0]; } foo. Printing "<no value>" for
2411 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2412 will continue to work, and a 0-size array as a whole doesn't
2413 have any contents to print.
2415 I suspect this probably could also happen with gcc -gstabs (not
2416 -gstabs+) for static fields, and perhaps other C++ extensions.
2417 Hopefully few people use -gstabs with gdb, since it is intended
2418 for dbx compatibility. */
2420 /* Ignore this field. */
2421 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2425 /* Detect an unpacked field and mark it as such.
2426 dbx gives a bit size for all fields.
2427 Note that forward refs cannot be packed,
2428 and treat enums as if they had the width of ints. */
2430 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2431 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_BOOL
2432 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2434 fip
-> list
-> field
.bitsize
= 0;
2436 if ((fip
-> list
-> field
.bitsize
2437 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2438 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2439 && (fip
-> list
-> field
.bitsize
2444 fip
-> list
-> field
.bitpos
% 8 == 0)
2446 fip
-> list
-> field
.bitsize
= 0;
2452 /* Read struct or class data fields. They have the form:
2454 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2456 At the end, we see a semicolon instead of a field.
2458 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2461 The optional VISIBILITY is one of:
2463 '/0' (VISIBILITY_PRIVATE)
2464 '/1' (VISIBILITY_PROTECTED)
2465 '/2' (VISIBILITY_PUBLIC)
2466 '/9' (VISIBILITY_IGNORE)
2468 or nothing, for C style fields with public visibility.
2470 Returns 1 for success, 0 for failure. */
2473 read_struct_fields (fip
, pp
, type
, objfile
)
2474 struct field_info
*fip
;
2477 struct objfile
*objfile
;
2480 struct nextfield
*new;
2482 /* We better set p right now, in case there are no fields at all... */
2486 /* Read each data member type until we find the terminating ';' at the end of
2487 the data member list, or break for some other reason such as finding the
2488 start of the member function list. */
2492 if (os9k_stabs
&& **pp
== ',') break;
2493 STABS_CONTINUE (pp
, objfile
);
2494 /* Get space to record the next field's data. */
2495 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2496 make_cleanup (free
, new);
2497 memset (new, 0, sizeof (struct nextfield
));
2498 new -> next
= fip
-> list
;
2501 /* Get the field name. */
2504 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2505 unless the CPLUS_MARKER is followed by an underscore, in
2506 which case it is just the name of an anonymous type, which we
2507 should handle like any other type name. */
2509 if (is_cplus_marker (p
[0]) && p
[1] != '_')
2511 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2516 /* Look for the ':' that separates the field name from the field
2517 values. Data members are delimited by a single ':', while member
2518 functions are delimited by a pair of ':'s. When we hit the member
2519 functions (if any), terminate scan loop and return. */
2521 while (*p
!= ':' && *p
!= '\0')
2528 /* Check to see if we have hit the member functions yet. */
2533 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2535 if (p
[0] == ':' && p
[1] == ':')
2537 /* chill the list of fields: the last entry (at the head) is a
2538 partially constructed entry which we now scrub. */
2539 fip
-> list
= fip
-> list
-> next
;
2544 /* The stabs for C++ derived classes contain baseclass information which
2545 is marked by a '!' character after the total size. This function is
2546 called when we encounter the baseclass marker, and slurps up all the
2547 baseclass information.
2549 Immediately following the '!' marker is the number of base classes that
2550 the class is derived from, followed by information for each base class.
2551 For each base class, there are two visibility specifiers, a bit offset
2552 to the base class information within the derived class, a reference to
2553 the type for the base class, and a terminating semicolon.
2555 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2557 Baseclass information marker __________________|| | | | | | |
2558 Number of baseclasses __________________________| | | | | | |
2559 Visibility specifiers (2) ________________________| | | | | |
2560 Offset in bits from start of class _________________| | | | |
2561 Type number for base class ___________________________| | | |
2562 Visibility specifiers (2) _______________________________| | |
2563 Offset in bits from start of class ________________________| |
2564 Type number of base class ____________________________________|
2566 Return 1 for success, 0 for (error-type-inducing) failure. */
2569 read_baseclasses (fip
, pp
, type
, objfile
)
2570 struct field_info
*fip
;
2573 struct objfile
*objfile
;
2576 struct nextfield
*new;
2584 /* Skip the '!' baseclass information marker. */
2588 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2591 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2597 /* Some stupid compilers have trouble with the following, so break
2598 it up into simpler expressions. */
2599 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2600 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2603 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2606 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2607 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2611 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2613 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2615 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2616 make_cleanup (free
, new);
2617 memset (new, 0, sizeof (struct nextfield
));
2618 new -> next
= fip
-> list
;
2620 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2622 STABS_CONTINUE (pp
, objfile
);
2626 /* Nothing to do. */
2629 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2632 /* Unknown character. Complain and treat it as non-virtual. */
2634 static struct complaint msg
= {
2635 "Unknown virtual character `%c' for baseclass", 0, 0};
2636 complain (&msg
, **pp
);
2641 new -> visibility
= *(*pp
)++;
2642 switch (new -> visibility
)
2644 case VISIBILITY_PRIVATE
:
2645 case VISIBILITY_PROTECTED
:
2646 case VISIBILITY_PUBLIC
:
2649 /* Bad visibility format. Complain and treat it as
2652 static struct complaint msg
= {
2653 "Unknown visibility `%c' for baseclass", 0, 0};
2654 complain (&msg
, new -> visibility
);
2655 new -> visibility
= VISIBILITY_PUBLIC
;
2662 /* The remaining value is the bit offset of the portion of the object
2663 corresponding to this baseclass. Always zero in the absence of
2664 multiple inheritance. */
2666 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2671 /* The last piece of baseclass information is the type of the
2672 base class. Read it, and remember it's type name as this
2675 new -> field
.type
= read_type (pp
, objfile
);
2676 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2678 /* skip trailing ';' and bump count of number of fields seen */
2687 /* The tail end of stabs for C++ classes that contain a virtual function
2688 pointer contains a tilde, a %, and a type number.
2689 The type number refers to the base class (possibly this class itself) which
2690 contains the vtable pointer for the current class.
2692 This function is called when we have parsed all the method declarations,
2693 so we can look for the vptr base class info. */
2696 read_tilde_fields (fip
, pp
, type
, objfile
)
2697 struct field_info
*fip
;
2700 struct objfile
*objfile
;
2704 STABS_CONTINUE (pp
, objfile
);
2706 /* If we are positioned at a ';', then skip it. */
2716 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2718 /* Obsolete flags that used to indicate the presence
2719 of constructors and/or destructors. */
2723 /* Read either a '%' or the final ';'. */
2724 if (*(*pp
)++ == '%')
2726 /* The next number is the type number of the base class
2727 (possibly our own class) which supplies the vtable for
2728 this class. Parse it out, and search that class to find
2729 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2730 and TYPE_VPTR_FIELDNO. */
2735 t
= read_type (pp
, objfile
);
2737 while (*p
!= '\0' && *p
!= ';')
2743 /* Premature end of symbol. */
2747 TYPE_VPTR_BASETYPE (type
) = t
;
2748 if (type
== t
) /* Our own class provides vtbl ptr */
2750 for (i
= TYPE_NFIELDS (t
) - 1;
2751 i
>= TYPE_N_BASECLASSES (t
);
2754 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2755 sizeof (vptr_name
) - 1))
2757 TYPE_VPTR_FIELDNO (type
) = i
;
2761 /* Virtual function table field not found. */
2762 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2767 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2778 attach_fn_fields_to_type (fip
, type
)
2779 struct field_info
*fip
;
2780 register struct type
*type
;
2784 for (n
= TYPE_NFN_FIELDS (type
);
2785 fip
-> fnlist
!= NULL
;
2786 fip
-> fnlist
= fip
-> fnlist
-> next
)
2788 --n
; /* Circumvent Sun3 compiler bug */
2789 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2794 /* Create the vector of fields, and record how big it is.
2795 We need this info to record proper virtual function table information
2796 for this class's virtual functions. */
2799 attach_fields_to_type (fip
, type
, objfile
)
2800 struct field_info
*fip
;
2801 register struct type
*type
;
2802 struct objfile
*objfile
;
2804 register int nfields
= 0;
2805 register int non_public_fields
= 0;
2806 register struct nextfield
*scan
;
2808 /* Count up the number of fields that we have, as well as taking note of
2809 whether or not there are any non-public fields, which requires us to
2810 allocate and build the private_field_bits and protected_field_bits
2813 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2816 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2818 non_public_fields
++;
2822 /* Now we know how many fields there are, and whether or not there are any
2823 non-public fields. Record the field count, allocate space for the
2824 array of fields, and create blank visibility bitfields if necessary. */
2826 TYPE_NFIELDS (type
) = nfields
;
2827 TYPE_FIELDS (type
) = (struct field
*)
2828 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2829 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2831 if (non_public_fields
)
2833 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2835 TYPE_FIELD_PRIVATE_BITS (type
) =
2836 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2837 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2839 TYPE_FIELD_PROTECTED_BITS (type
) =
2840 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2841 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2843 TYPE_FIELD_IGNORE_BITS (type
) =
2844 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2845 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2848 /* Copy the saved-up fields into the field vector. Start from the head
2849 of the list, adding to the tail of the field array, so that they end
2850 up in the same order in the array in which they were added to the list. */
2852 while (nfields
-- > 0)
2854 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2855 switch (fip
-> list
-> visibility
)
2857 case VISIBILITY_PRIVATE
:
2858 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2861 case VISIBILITY_PROTECTED
:
2862 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2865 case VISIBILITY_IGNORE
:
2866 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2869 case VISIBILITY_PUBLIC
:
2873 /* Unknown visibility. Complain and treat it as public. */
2875 static struct complaint msg
= {
2876 "Unknown visibility `%c' for field", 0, 0};
2877 complain (&msg
, fip
-> list
-> visibility
);
2881 fip
-> list
= fip
-> list
-> next
;
2886 /* Read the description of a structure (or union type) and return an object
2887 describing the type.
2889 PP points to a character pointer that points to the next unconsumed token
2890 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2891 *PP will point to "4a:1,0,32;;".
2893 TYPE points to an incomplete type that needs to be filled in.
2895 OBJFILE points to the current objfile from which the stabs information is
2896 being read. (Note that it is redundant in that TYPE also contains a pointer
2897 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2900 static struct type
*
2901 read_struct_type (pp
, type
, objfile
)
2904 struct objfile
*objfile
;
2906 struct cleanup
*back_to
;
2907 struct field_info fi
;
2912 back_to
= make_cleanup (null_cleanup
, 0);
2914 INIT_CPLUS_SPECIFIC (type
);
2915 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2917 /* First comes the total size in bytes. */
2921 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2923 return error_type (pp
, objfile
);
2926 /* Now read the baseclasses, if any, read the regular C struct or C++
2927 class member fields, attach the fields to the type, read the C++
2928 member functions, attach them to the type, and then read any tilde
2929 field (baseclass specifier for the class holding the main vtable). */
2931 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2932 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2933 || !attach_fields_to_type (&fi
, type
, objfile
)
2934 || !read_member_functions (&fi
, pp
, type
, objfile
)
2935 || !attach_fn_fields_to_type (&fi
, type
)
2936 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2938 type
= error_type (pp
, objfile
);
2941 do_cleanups (back_to
);
2945 /* Read a definition of an array type,
2946 and create and return a suitable type object.
2947 Also creates a range type which represents the bounds of that
2950 static struct type
*
2951 read_array_type (pp
, type
, objfile
)
2953 register struct type
*type
;
2954 struct objfile
*objfile
;
2956 struct type
*index_type
, *element_type
, *range_type
;
2961 /* Format of an array type:
2962 "ar<index type>;lower;upper;<array_contents_type>".
2963 OS9000: "arlower,upper;<array_contents_type>".
2965 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2966 for these, produce a type like float[][]. */
2969 index_type
= builtin_type_int
;
2972 index_type
= read_type (pp
, objfile
);
2974 /* Improper format of array type decl. */
2975 return error_type (pp
, objfile
);
2979 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2984 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
2986 return error_type (pp
, objfile
);
2988 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2993 upper
= read_huge_number (pp
, ';', &nbits
);
2995 return error_type (pp
, objfile
);
2997 element_type
= read_type (pp
, objfile
);
3006 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3007 type
= create_array_type (type
, element_type
, range_type
);
3013 /* Read a definition of an enumeration type,
3014 and create and return a suitable type object.
3015 Also defines the symbols that represent the values of the type. */
3017 static struct type
*
3018 read_enum_type (pp
, type
, objfile
)
3020 register struct type
*type
;
3021 struct objfile
*objfile
;
3026 register struct symbol
*sym
;
3028 struct pending
**symlist
;
3029 struct pending
*osyms
, *syms
;
3032 int unsigned_enum
= 1;
3035 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3036 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3037 to do? For now, force all enum values to file scope. */
3038 if (within_function
)
3039 symlist
= &local_symbols
;
3042 symlist
= &file_symbols
;
3044 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3048 /* Size. Perhaps this does not have to be conditionalized on
3049 os9k_stabs (assuming the name of an enum constant can't start
3051 read_huge_number (pp
, 0, &nbits
);
3053 return error_type (pp
, objfile
);
3056 /* The aix4 compiler emits an extra field before the enum members;
3057 my guess is it's a type of some sort. Just ignore it. */
3060 /* Skip over the type. */
3064 /* Skip over the colon. */
3068 /* Read the value-names and their values.
3069 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3070 A semicolon or comma instead of a NAME means the end. */
3071 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3073 STABS_CONTINUE (pp
, objfile
);
3075 while (*p
!= ':') p
++;
3076 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3078 n
= read_huge_number (pp
, ',', &nbits
);
3080 return error_type (pp
, objfile
);
3082 sym
= (struct symbol
*)
3083 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3084 memset (sym
, 0, sizeof (struct symbol
));
3085 SYMBOL_NAME (sym
) = name
;
3086 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3087 SYMBOL_CLASS (sym
) = LOC_CONST
;
3088 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3089 SYMBOL_VALUE (sym
) = n
;
3092 add_symbol_to_list (sym
, symlist
);
3097 (*pp
)++; /* Skip the semicolon. */
3099 /* Now fill in the fields of the type-structure. */
3101 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3102 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3103 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3105 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3106 TYPE_NFIELDS (type
) = nsyms
;
3107 TYPE_FIELDS (type
) = (struct field
*)
3108 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3109 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3111 /* Find the symbols for the values and put them into the type.
3112 The symbols can be found in the symlist that we put them on
3113 to cause them to be defined. osyms contains the old value
3114 of that symlist; everything up to there was defined by us. */
3115 /* Note that we preserve the order of the enum constants, so
3116 that in something like "enum {FOO, LAST_THING=FOO}" we print
3117 FOO, not LAST_THING. */
3119 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3121 int last
= syms
== osyms
? o_nsyms
: 0;
3122 int j
= syms
->nsyms
;
3123 for (; --j
>= last
; --n
)
3125 struct symbol
*xsym
= syms
->symbol
[j
];
3126 SYMBOL_TYPE (xsym
) = type
;
3127 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3128 TYPE_FIELD_VALUE (type
, n
) = 0;
3129 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3130 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3139 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3140 typedefs in every file (for int, long, etc):
3142 type = b <signed> <width>; <offset>; <nbits>
3143 signed = u or s. Possible c in addition to u or s (for char?).
3144 offset = offset from high order bit to start bit of type.
3145 width is # bytes in object of this type, nbits is # bits in type.
3147 The width/offset stuff appears to be for small objects stored in
3148 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3151 static struct type
*
3152 read_sun_builtin_type (pp
, typenums
, objfile
)
3155 struct objfile
*objfile
;
3170 return error_type (pp
, objfile
);
3174 /* For some odd reason, all forms of char put a c here. This is strange
3175 because no other type has this honor. We can safely ignore this because
3176 we actually determine 'char'acterness by the number of bits specified in
3182 /* The first number appears to be the number of bytes occupied
3183 by this type, except that unsigned short is 4 instead of 2.
3184 Since this information is redundant with the third number,
3185 we will ignore it. */
3186 read_huge_number (pp
, ';', &nbits
);
3188 return error_type (pp
, objfile
);
3190 /* The second number is always 0, so ignore it too. */
3191 read_huge_number (pp
, ';', &nbits
);
3193 return error_type (pp
, objfile
);
3195 /* The third number is the number of bits for this type. */
3196 type_bits
= read_huge_number (pp
, 0, &nbits
);
3198 return error_type (pp
, objfile
);
3199 /* The type *should* end with a semicolon. If it are embedded
3200 in a larger type the semicolon may be the only way to know where
3201 the type ends. If this type is at the end of the stabstring we
3202 can deal with the omitted semicolon (but we don't have to like
3203 it). Don't bother to complain(), Sun's compiler omits the semicolon
3209 return init_type (TYPE_CODE_VOID
, 1,
3210 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3213 return init_type (TYPE_CODE_INT
,
3214 type_bits
/ TARGET_CHAR_BIT
,
3215 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3219 static struct type
*
3220 read_sun_floating_type (pp
, typenums
, objfile
)
3223 struct objfile
*objfile
;
3229 /* The first number has more details about the type, for example
3231 details
= read_huge_number (pp
, ';', &nbits
);
3233 return error_type (pp
, objfile
);
3235 /* The second number is the number of bytes occupied by this type */
3236 nbytes
= read_huge_number (pp
, ';', &nbits
);
3238 return error_type (pp
, objfile
);
3240 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3241 || details
== NF_COMPLEX32
)
3242 /* This is a type we can't handle, but we do know the size.
3243 We also will be able to give it a name. */
3244 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3246 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3249 /* Read a number from the string pointed to by *PP.
3250 The value of *PP is advanced over the number.
3251 If END is nonzero, the character that ends the
3252 number must match END, or an error happens;
3253 and that character is skipped if it does match.
3254 If END is zero, *PP is left pointing to that character.
3256 If the number fits in a long, set *BITS to 0 and return the value.
3257 If not, set *BITS to be the number of bits in the number and return 0.
3259 If encounter garbage, set *BITS to -1 and return 0. */
3262 read_huge_number (pp
, end
, bits
)
3282 /* Leading zero means octal. GCC uses this to output values larger
3283 than an int (because that would be hard in decimal). */
3291 upper_limit
= ULONG_MAX
/ radix
;
3293 upper_limit
= LONG_MAX
/ radix
;
3295 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3297 if (n
<= upper_limit
)
3300 n
+= c
- '0'; /* FIXME this overflows anyway */
3305 /* This depends on large values being output in octal, which is
3312 /* Ignore leading zeroes. */
3316 else if (c
== '2' || c
== '3')
3342 /* Large decimal constants are an error (because it is hard to
3343 count how many bits are in them). */
3349 /* -0x7f is the same as 0x80. So deal with it by adding one to
3350 the number of bits. */
3362 /* It's *BITS which has the interesting information. */
3366 static struct type
*
3367 read_range_type (pp
, typenums
, objfile
)
3370 struct objfile
*objfile
;
3372 char *orig_pp
= *pp
;
3377 struct type
*result_type
;
3378 struct type
*index_type
= NULL
;
3380 /* First comes a type we are a subrange of.
3381 In C it is usually 0, 1 or the type being defined. */
3382 if (read_type_number (pp
, rangenums
) != 0)
3383 return error_type (pp
, objfile
);
3384 self_subrange
= (rangenums
[0] == typenums
[0] &&
3385 rangenums
[1] == typenums
[1]);
3390 index_type
= read_type (pp
, objfile
);
3393 /* A semicolon should now follow; skip it. */
3397 /* The remaining two operands are usually lower and upper bounds
3398 of the range. But in some special cases they mean something else. */
3399 n2
= read_huge_number (pp
, ';', &n2bits
);
3400 n3
= read_huge_number (pp
, ';', &n3bits
);
3402 if (n2bits
== -1 || n3bits
== -1)
3403 return error_type (pp
, objfile
);
3406 goto handle_true_range
;
3408 /* If limits are huge, must be large integral type. */
3409 if (n2bits
!= 0 || n3bits
!= 0)
3411 char got_signed
= 0;
3412 char got_unsigned
= 0;
3413 /* Number of bits in the type. */
3416 /* Range from 0 to <large number> is an unsigned large integral type. */
3417 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3422 /* Range from <large number> to <large number>-1 is a large signed
3423 integral type. Take care of the case where <large number> doesn't
3424 fit in a long but <large number>-1 does. */
3425 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3426 || (n2bits
!= 0 && n3bits
== 0
3427 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3434 if (got_signed
|| got_unsigned
)
3436 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3437 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3441 return error_type (pp
, objfile
);
3444 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3445 if (self_subrange
&& n2
== 0 && n3
== 0)
3446 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3448 /* If n3 is zero and n2 is positive, we want a floating type,
3449 and n2 is the width in bytes.
3451 Fortran programs appear to use this for complex types also,
3452 and they give no way to distinguish between double and single-complex!
3454 GDB does not have complex types.
3456 Just return the complex as a float of that size. It won't work right
3457 for the complex values, but at least it makes the file loadable. */
3459 if (n3
== 0 && n2
> 0)
3461 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3464 /* If the upper bound is -1, it must really be an unsigned int. */
3466 else if (n2
== 0 && n3
== -1)
3468 /* It is unsigned int or unsigned long. */
3469 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3470 compatibility hack. */
3471 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3472 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3475 /* Special case: char is defined (Who knows why) as a subrange of
3476 itself with range 0-127. */
3477 else if (self_subrange
&& n2
== 0 && n3
== 127)
3478 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3480 else if (current_symbol
&& SYMBOL_LANGUAGE (current_symbol
) == language_chill
3482 goto handle_true_range
;
3484 /* We used to do this only for subrange of self or subrange of int. */
3488 /* n3 actually gives the size. */
3489 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3492 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3494 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3496 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3497 "unsigned long", and we already checked for that,
3498 so don't need to test for it here. */
3500 /* I think this is for Convex "long long". Since I don't know whether
3501 Convex sets self_subrange, I also accept that particular size regardless
3502 of self_subrange. */
3503 else if (n3
== 0 && n2
< 0
3505 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3506 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3507 else if (n2
== -n3
-1)
3510 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3512 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3513 if (n3
== 0x7fffffff)
3514 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3517 /* We have a real range type on our hands. Allocate space and
3518 return a real pointer. */
3522 index_type
= builtin_type_int
;
3524 index_type
= *dbx_lookup_type (rangenums
);
3525 if (index_type
== NULL
)
3527 /* Does this actually ever happen? Is that why we are worrying
3528 about dealing with it rather than just calling error_type? */
3530 static struct type
*range_type_index
;
3532 complain (&range_type_base_complaint
, rangenums
[1]);
3533 if (range_type_index
== NULL
)
3535 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3536 0, "range type index type", NULL
);
3537 index_type
= range_type_index
;
3540 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3541 return (result_type
);
3544 /* Read in an argument list. This is a list of types, separated by commas
3545 and terminated with END. Return the list of types read in, or (struct type
3546 **)-1 if there is an error. */
3548 static struct type
**
3549 read_args (pp
, end
, objfile
)
3552 struct objfile
*objfile
;
3554 /* FIXME! Remove this arbitrary limit! */
3555 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3561 /* Invalid argument list: no ','. */
3562 return (struct type
**)-1;
3564 STABS_CONTINUE (pp
, objfile
);
3565 types
[n
++] = read_type (pp
, objfile
);
3567 (*pp
)++; /* get past `end' (the ':' character) */
3571 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3573 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3575 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3576 memset (rval
+ n
, 0, sizeof (struct type
*));
3580 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3582 memcpy (rval
, types
, n
* sizeof (struct type
*));
3586 /* Common block handling. */
3588 /* List of symbols declared since the last BCOMM. This list is a tail
3589 of local_symbols. When ECOMM is seen, the symbols on the list
3590 are noted so their proper addresses can be filled in later,
3591 using the common block base address gotten from the assembler
3594 static struct pending
*common_block
;
3595 static int common_block_i
;
3597 /* Name of the current common block. We get it from the BCOMM instead of the
3598 ECOMM to match IBM documentation (even though IBM puts the name both places
3599 like everyone else). */
3600 static char *common_block_name
;
3602 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3603 to remain after this function returns. */
3606 common_block_start (name
, objfile
)
3608 struct objfile
*objfile
;
3610 if (common_block_name
!= NULL
)
3612 static struct complaint msg
= {
3613 "Invalid symbol data: common block within common block",
3617 common_block
= local_symbols
;
3618 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3619 common_block_name
= obsavestring (name
, strlen (name
),
3620 &objfile
-> symbol_obstack
);
3623 /* Process a N_ECOMM symbol. */
3626 common_block_end (objfile
)
3627 struct objfile
*objfile
;
3629 /* Symbols declared since the BCOMM are to have the common block
3630 start address added in when we know it. common_block and
3631 common_block_i point to the first symbol after the BCOMM in
3632 the local_symbols list; copy the list and hang it off the
3633 symbol for the common block name for later fixup. */
3636 struct pending
*new = 0;
3637 struct pending
*next
;
3640 if (common_block_name
== NULL
)
3642 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3647 sym
= (struct symbol
*)
3648 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3649 memset (sym
, 0, sizeof (struct symbol
));
3650 SYMBOL_NAME (sym
) = common_block_name
;
3651 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3653 /* Now we copy all the symbols which have been defined since the BCOMM. */
3655 /* Copy all the struct pendings before common_block. */
3656 for (next
= local_symbols
;
3657 next
!= NULL
&& next
!= common_block
;
3660 for (j
= 0; j
< next
->nsyms
; j
++)
3661 add_symbol_to_list (next
->symbol
[j
], &new);
3664 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3665 NULL, it means copy all the local symbols (which we already did
3668 if (common_block
!= NULL
)
3669 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3670 add_symbol_to_list (common_block
->symbol
[j
], &new);
3672 SYMBOL_TYPE (sym
) = (struct type
*) new;
3674 /* Should we be putting local_symbols back to what it was?
3677 i
= hashname (SYMBOL_NAME (sym
));
3678 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3679 global_sym_chain
[i
] = sym
;
3680 common_block_name
= NULL
;
3683 /* Add a common block's start address to the offset of each symbol
3684 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3685 the common block name). */
3688 fix_common_block (sym
, valu
)
3692 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3693 for ( ; next
; next
= next
->next
)
3696 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3697 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3703 /* What about types defined as forward references inside of a small lexical
3705 /* Add a type to the list of undefined types to be checked through
3706 once this file has been read in. */
3709 add_undefined_type (type
)
3712 if (undef_types_length
== undef_types_allocated
)
3714 undef_types_allocated
*= 2;
3715 undef_types
= (struct type
**)
3716 xrealloc ((char *) undef_types
,
3717 undef_types_allocated
* sizeof (struct type
*));
3719 undef_types
[undef_types_length
++] = type
;
3722 /* Go through each undefined type, see if it's still undefined, and fix it
3723 up if possible. We have two kinds of undefined types:
3725 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3726 Fix: update array length using the element bounds
3727 and the target type's length.
3728 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3729 yet defined at the time a pointer to it was made.
3730 Fix: Do a full lookup on the struct/union tag. */
3732 cleanup_undefined_types ()
3736 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3738 switch (TYPE_CODE (*type
))
3741 case TYPE_CODE_STRUCT
:
3742 case TYPE_CODE_UNION
:
3743 case TYPE_CODE_ENUM
:
3745 /* Check if it has been defined since. Need to do this here
3746 as well as in check_typedef to deal with the (legitimate in
3747 C though not C++) case of several types with the same name
3748 in different source files. */
3749 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3751 struct pending
*ppt
;
3753 /* Name of the type, without "struct" or "union" */
3754 char *typename
= TYPE_TAG_NAME (*type
);
3756 if (typename
== NULL
)
3758 static struct complaint msg
= {"need a type name", 0, 0};
3762 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3764 for (i
= 0; i
< ppt
->nsyms
; i
++)
3766 struct symbol
*sym
= ppt
->symbol
[i
];
3768 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3769 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3770 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3772 && STREQ (SYMBOL_NAME (sym
), typename
))
3774 memcpy (*type
, SYMBOL_TYPE (sym
),
3775 sizeof (struct type
));
3785 static struct complaint msg
= {"\
3786 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3787 complain (&msg
, TYPE_CODE (*type
));
3793 undef_types_length
= 0;
3796 /* Scan through all of the global symbols defined in the object file,
3797 assigning values to the debugging symbols that need to be assigned
3798 to. Get these symbols from the minimal symbol table. */
3801 scan_file_globals (objfile
)
3802 struct objfile
*objfile
;
3805 struct minimal_symbol
*msymbol
;
3806 struct symbol
*sym
, *prev
;
3808 /* Avoid expensive loop through all minimal symbols if there are
3809 no unresolved symbols. */
3810 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3812 if (global_sym_chain
[hash
])
3815 if (hash
>= HASHSIZE
)
3818 for (msymbol
= objfile
-> msymbols
;
3819 msymbol
&& SYMBOL_NAME (msymbol
) != NULL
;
3824 /* Skip static symbols. */
3825 switch (MSYMBOL_TYPE (msymbol
))
3837 /* Get the hash index and check all the symbols
3838 under that hash index. */
3840 hash
= hashname (SYMBOL_NAME (msymbol
));
3842 for (sym
= global_sym_chain
[hash
]; sym
;)
3844 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3845 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3847 /* Splice this symbol out of the hash chain and
3848 assign the value we have to it. */
3851 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3855 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3858 /* Check to see whether we need to fix up a common block. */
3859 /* Note: this code might be executed several times for
3860 the same symbol if there are multiple references. */
3862 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3864 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3868 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3871 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3875 sym
= SYMBOL_VALUE_CHAIN (prev
);
3879 sym
= global_sym_chain
[hash
];
3885 sym
= SYMBOL_VALUE_CHAIN (sym
);
3890 /* Change the storage class of any remaining unresolved globals to
3891 LOC_UNRESOLVED and remove them from the chain. */
3892 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3894 sym
= global_sym_chain
[hash
];
3898 sym
= SYMBOL_VALUE_CHAIN (sym
);
3900 /* Change the symbol address from the misleading chain value
3902 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3904 /* Complain about unresolved common block symbols. */
3905 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
3906 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
3908 complain (&unresolved_sym_chain_complaint
,
3909 objfile
->name
, SYMBOL_NAME (prev
));
3912 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3915 /* Initialize anything that needs initializing when starting to read
3916 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3924 /* Initialize anything that needs initializing when a completely new
3925 symbol file is specified (not just adding some symbols from another
3926 file, e.g. a shared library). */
3929 stabsread_new_init ()
3931 /* Empty the hash table of global syms looking for values. */
3932 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3935 /* Initialize anything that needs initializing at the same time as
3936 start_symtab() is called. */
3940 global_stabs
= NULL
; /* AIX COFF */
3941 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3942 n_this_object_header_files
= 1;
3943 type_vector_length
= 0;
3944 type_vector
= (struct type
**) 0;
3946 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3947 common_block_name
= NULL
;
3952 /* Call after end_symtab() */
3958 free ((char *) type_vector
);
3961 type_vector_length
= 0;
3962 previous_stab_code
= 0;
3966 finish_global_stabs (objfile
)
3967 struct objfile
*objfile
;
3971 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3972 free ((PTR
) global_stabs
);
3973 global_stabs
= NULL
;
3977 /* Initializer for this module */
3980 _initialize_stabsread ()
3982 undef_types_allocated
= 20;
3983 undef_types_length
= 0;
3984 undef_types
= (struct type
**)
3985 xmalloc (undef_types_allocated
* sizeof (struct type
*));