1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
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 malloc (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 (string
[0] == CPLUS_MARKER
)
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 delare 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 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
)
1007 struct symbol
*prev_sym
;
1008 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1009 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1010 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1011 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
1013 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1014 /* Use the type from the LOC_REGISTER; that is the type
1015 that is actually in that register. */
1016 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1017 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1022 add_symbol_to_list (sym
, &local_symbols
);
1025 add_symbol_to_list (sym
, &file_symbols
);
1029 /* Static symbol at top level of file */
1030 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1031 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1032 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1033 #ifdef STATIC_TRANSFORM_NAME
1034 if (SYMBOL_NAME (sym
)[0] == '$')
1036 struct minimal_symbol
*msym
;
1037 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1040 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1041 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1045 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1046 add_symbol_to_list (sym
, &file_symbols
);
1050 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1052 /* For a nameless type, we don't want a create a symbol, thus we
1053 did not use `sym'. Return without further processing. */
1054 if (nameless
) return NULL
;
1056 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1057 SYMBOL_VALUE (sym
) = valu
;
1058 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1059 /* C++ vagaries: we may have a type which is derived from
1060 a base type which did not have its name defined when the
1061 derived class was output. We fill in the derived class's
1062 base part member's name here in that case. */
1063 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1064 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1065 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1066 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1069 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1070 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1071 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1072 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1075 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1077 /* gcc-2.6 or later (when using -fvtable-thunks)
1078 emits a unique named type for a vtable entry.
1079 Some gdb code depends on that specific name. */
1080 extern const char vtbl_ptr_name
[];
1082 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1083 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1084 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1086 /* If we are giving a name to a type such as "pointer to
1087 foo" or "function returning foo", we better not set
1088 the TYPE_NAME. If the program contains "typedef char
1089 *caddr_t;", we don't want all variables of type char
1090 * to print as caddr_t. This is not just a
1091 consequence of GDB's type management; PCC and GCC (at
1092 least through version 2.4) both output variables of
1093 either type char * or caddr_t with the type number
1094 defined in the 't' symbol for caddr_t. If a future
1095 compiler cleans this up it GDB is not ready for it
1096 yet, but if it becomes ready we somehow need to
1097 disable this check (without breaking the PCC/GCC2.4
1102 Fortunately, this check seems not to be necessary
1103 for anything except pointers or functions. */
1106 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1109 add_symbol_to_list (sym
, &file_symbols
);
1113 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1114 by 't' which means we are typedef'ing it as well. */
1115 synonym
= *p
== 't';
1119 /* The semantics of C++ state that "struct foo { ... }" also defines
1120 a typedef for "foo". Unfortunately, cfront never makes the typedef
1121 when translating C++ into C. We make the typedef here so that
1122 "ptype foo" works as expected for cfront translated code. */
1123 else if (current_subfile
->language
== language_cplus
)
1126 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1128 /* For a nameless type, we don't want a create a symbol, thus we
1129 did not use `sym'. Return without further processing. */
1130 if (nameless
) return NULL
;
1132 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1133 SYMBOL_VALUE (sym
) = valu
;
1134 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1135 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1136 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1137 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1138 add_symbol_to_list (sym
, &file_symbols
);
1142 /* Clone the sym and then modify it. */
1143 register struct symbol
*typedef_sym
= (struct symbol
*)
1144 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1145 *typedef_sym
= *sym
;
1146 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1147 SYMBOL_VALUE (typedef_sym
) = valu
;
1148 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1149 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1150 TYPE_NAME (SYMBOL_TYPE (sym
))
1151 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1152 add_symbol_to_list (typedef_sym
, &file_symbols
);
1157 /* Static symbol of local scope */
1158 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1159 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1160 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1161 #ifdef STATIC_TRANSFORM_NAME
1162 if (SYMBOL_NAME (sym
)[0] == '$')
1164 struct minimal_symbol
*msym
;
1165 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1168 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1169 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1173 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1175 add_symbol_to_list (sym
, &global_symbols
);
1177 add_symbol_to_list (sym
, &local_symbols
);
1181 /* Reference parameter */
1182 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1183 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1184 SYMBOL_VALUE (sym
) = valu
;
1185 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1186 add_symbol_to_list (sym
, &local_symbols
);
1190 /* Reference parameter which is in a register. */
1191 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1192 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1193 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1194 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
1196 complain (®_value_complaint
, SYMBOL_VALUE (sym
), NUM_REGS
,
1197 SYMBOL_SOURCE_NAME (sym
));
1198 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1200 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1201 add_symbol_to_list (sym
, &local_symbols
);
1205 /* This is used by Sun FORTRAN for "function result value".
1206 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1207 that Pascal uses it too, but when I tried it Pascal used
1208 "x:3" (local symbol) instead. */
1209 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1210 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1211 SYMBOL_VALUE (sym
) = valu
;
1212 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1213 add_symbol_to_list (sym
, &local_symbols
);
1217 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
1218 SYMBOL_CLASS (sym
) = LOC_CONST
;
1219 SYMBOL_VALUE (sym
) = 0;
1220 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1221 add_symbol_to_list (sym
, &file_symbols
);
1225 /* When passing structures to a function, some systems sometimes pass
1226 the address in a register, not the structure itself.
1228 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1229 to LOC_REGPARM_ADDR for structures and unions. */
1231 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1232 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1234 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1235 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1236 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1238 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1239 subsequent arguments on the sparc, for example). */
1240 if (SYMBOL_CLASS (sym
) == LOC_ARG
1241 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1243 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1244 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1245 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. */
1355 /* It might be a type attribute or a member type. */
1356 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1361 /* Type attributes. */
1364 /* Skip to the semicolon. */
1365 while (*p
!= ';' && *p
!= '\0')
1369 return error_type (pp
, objfile
);
1371 /* Skip the semicolon. */
1377 type_size
= atoi (attr
+ 1);
1387 /* Ignore unrecognized type attributes, so future compilers
1388 can invent new ones. */
1393 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1398 /* 'typenums=' not present, type is anonymous. Read and return
1399 the definition, but don't put it in the type vector. */
1400 typenums
[0] = typenums
[1] = -1;
1404 type_descriptor
= (*pp
)[-1];
1405 switch (type_descriptor
)
1409 enum type_code code
;
1411 /* Used to index through file_symbols. */
1412 struct pending
*ppt
;
1415 /* Name including "struct", etc. */
1419 char *from
, *to
, *p
, *q1
, *q2
;
1421 /* Set the type code according to the following letter. */
1425 code
= TYPE_CODE_STRUCT
;
1428 code
= TYPE_CODE_UNION
;
1431 code
= TYPE_CODE_ENUM
;
1435 /* Complain and keep going, so compilers can invent new
1436 cross-reference types. */
1437 static struct complaint msg
=
1438 {"Unrecognized cross-reference type `%c'", 0, 0};
1439 complain (&msg
, (*pp
)[0]);
1440 code
= TYPE_CODE_STRUCT
;
1445 q1
= strchr(*pp
, '<');
1446 p
= strchr(*pp
, ':');
1448 return error_type (pp
, objfile
);
1449 while (q1
&& p
> q1
&& p
[1] == ':')
1451 q2
= strchr(q1
, '>');
1457 return error_type (pp
, objfile
);
1460 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1462 /* Copy the name. */
1468 /* Set the pointer ahead of the name which we just read, and
1473 /* Now check to see whether the type has already been
1474 declared. This was written for arrays of cross-referenced
1475 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1476 sure it is not necessary anymore. But it might be a good
1477 idea, to save a little memory. */
1479 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1480 for (i
= 0; i
< ppt
->nsyms
; i
++)
1482 struct symbol
*sym
= ppt
->symbol
[i
];
1484 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1485 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1486 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1487 && STREQ (SYMBOL_NAME (sym
), type_name
))
1489 obstack_free (&objfile
-> type_obstack
, type_name
);
1490 type
= SYMBOL_TYPE (sym
);
1495 /* Didn't find the type to which this refers, so we must
1496 be dealing with a forward reference. Allocate a type
1497 structure for it, and keep track of it so we can
1498 fill in the rest of the fields when we get the full
1500 type
= dbx_alloc_type (typenums
, objfile
);
1501 TYPE_CODE (type
) = code
;
1502 TYPE_TAG_NAME (type
) = type_name
;
1503 INIT_CPLUS_SPECIFIC(type
);
1504 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1506 add_undefined_type (type
);
1510 case '-': /* RS/6000 built-in type */
1529 /* Peek ahead at the number to detect void. */
1530 if (read_type_number (pp
, xtypenums
) != 0)
1531 return error_type (pp
, objfile
);
1533 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1534 /* It's being defined as itself. That means it is "void". */
1535 type
= init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
1540 /* Go back to the number and have read_type get it. This means
1541 that we can deal with something like t(1,2)=(3,4)=... which
1542 the Lucid compiler uses. */
1544 xtype
= read_type (pp
, objfile
);
1546 /* The type is being defined to another type. So we copy the type.
1547 This loses if we copy a C++ class and so we lose track of how
1548 the names are mangled (but g++ doesn't output stabs like this
1551 type
= alloc_type (objfile
);
1552 if (SYMBOL_LINE (current_symbol
) == 0)
1555 /* The idea behind clearing the names is that the only purpose
1556 for defining a type to another type is so that the name of
1557 one can be different. So we probably don't need to worry
1558 much about the case where the compiler doesn't give a name
1560 TYPE_NAME (type
) = NULL
;
1561 TYPE_TAG_NAME (type
) = NULL
;
1565 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1566 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1567 TYPE_TARGET_TYPE (type
) = xtype
;
1570 if (typenums
[0] != -1)
1571 *dbx_lookup_type (typenums
) = type
;
1575 /* In the following types, we must be sure to overwrite any existing
1576 type that the typenums refer to, rather than allocating a new one
1577 and making the typenums point to the new one. This is because there
1578 may already be pointers to the existing type (if it had been
1579 forward-referenced), and we must change it to a pointer, function,
1580 reference, or whatever, *in-place*. */
1583 type1
= read_type (pp
, objfile
);
1584 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1587 case '&': /* Reference to another type */
1588 type1
= read_type (pp
, objfile
);
1589 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1592 case 'f': /* Function returning another type */
1593 if (os9k_stabs
&& **pp
== '(')
1595 /* Function prototype; parse it.
1596 We must conditionalize this on os9k_stabs because otherwise
1597 it could be confused with a Sun-style (1,3) typenumber
1603 t
= read_type(pp
, objfile
);
1604 if (**pp
== ',') ++*pp
;
1607 type1
= read_type (pp
, objfile
);
1608 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1611 case 'k': /* Const qualifier on some type (Sun) */
1612 case 'c': /* Const qualifier on some type (OS9000) */
1613 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1614 only accept 'c' in the os9k_stabs case. */
1615 if (type_descriptor
== 'c' && !os9k_stabs
)
1616 return error_type (pp
, objfile
);
1617 type
= read_type (pp
, objfile
);
1618 /* FIXME! For now, we ignore const and volatile qualifiers. */
1621 case 'B': /* Volatile qual on some type (Sun) */
1622 case 'i': /* Volatile qual on some type (OS9000) */
1623 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1624 only accept 'i' in the os9k_stabs case. */
1625 if (type_descriptor
== 'i' && !os9k_stabs
)
1626 return error_type (pp
, objfile
);
1627 type
= read_type (pp
, objfile
);
1628 /* FIXME! For now, we ignore const and volatile qualifiers. */
1631 /* FIXME -- we should be doing smash_to_XXX types here. */
1632 case '@': /* Member (class & variable) type */
1634 struct type
*domain
= read_type (pp
, objfile
);
1635 struct type
*memtype
;
1638 /* Invalid member type data format. */
1639 return error_type (pp
, objfile
);
1642 memtype
= read_type (pp
, objfile
);
1643 type
= dbx_alloc_type (typenums
, objfile
);
1644 smash_to_member_type (type
, domain
, memtype
);
1648 case '#': /* Method (class & fn) type */
1649 if ((*pp
)[0] == '#')
1651 /* We'll get the parameter types from the name. */
1652 struct type
*return_type
;
1655 return_type
= read_type (pp
, objfile
);
1656 if (*(*pp
)++ != ';')
1657 complain (&invalid_member_complaint
, symnum
);
1658 type
= allocate_stub_method (return_type
);
1659 if (typenums
[0] != -1)
1660 *dbx_lookup_type (typenums
) = type
;
1664 struct type
*domain
= read_type (pp
, objfile
);
1665 struct type
*return_type
;
1669 /* Invalid member type data format. */
1670 return error_type (pp
, objfile
);
1674 return_type
= read_type (pp
, objfile
);
1675 args
= read_args (pp
, ';', objfile
);
1676 type
= dbx_alloc_type (typenums
, objfile
);
1677 smash_to_method_type (type
, domain
, return_type
, args
);
1681 case 'r': /* Range type */
1682 type
= read_range_type (pp
, typenums
, objfile
);
1683 if (typenums
[0] != -1)
1684 *dbx_lookup_type (typenums
) = type
;
1689 /* Const and volatile qualified type. */
1690 type
= read_type (pp
, objfile
);
1693 /* Sun ACC builtin int type */
1694 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1695 if (typenums
[0] != -1)
1696 *dbx_lookup_type (typenums
) = type
;
1700 case 'R': /* Sun ACC builtin float type */
1701 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1702 if (typenums
[0] != -1)
1703 *dbx_lookup_type (typenums
) = type
;
1706 case 'e': /* Enumeration type */
1707 type
= dbx_alloc_type (typenums
, objfile
);
1708 type
= read_enum_type (pp
, type
, objfile
);
1709 if (typenums
[0] != -1)
1710 *dbx_lookup_type (typenums
) = type
;
1713 case 's': /* Struct type */
1714 case 'u': /* Union type */
1715 type
= dbx_alloc_type (typenums
, objfile
);
1716 switch (type_descriptor
)
1719 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1722 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1725 type
= read_struct_type (pp
, type
, objfile
);
1728 case 'a': /* Array type */
1730 return error_type (pp
, objfile
);
1733 type
= dbx_alloc_type (typenums
, objfile
);
1734 type
= read_array_type (pp
, type
, objfile
);
1736 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1740 type1
= read_type (pp
, objfile
);
1741 type
= create_set_type ((struct type
*) NULL
, type1
);
1743 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1744 if (typenums
[0] != -1)
1745 *dbx_lookup_type (typenums
) = type
;
1749 --*pp
; /* Go back to the symbol in error */
1750 /* Particularly important if it was \0! */
1751 return error_type (pp
, objfile
);
1756 warning ("GDB internal error, type is NULL in stabsread.c\n");
1757 return error_type (pp
, objfile
);
1760 /* Size specified in a type attribute overrides any other size. */
1761 if (type_size
!= -1)
1762 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1767 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1768 Return the proper type node for a given builtin type number. */
1770 static struct type
*
1771 rs6000_builtin_type (typenum
)
1774 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1775 #define NUMBER_RECOGNIZED 34
1776 /* This includes an empty slot for type number -0. */
1777 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1778 struct type
*rettype
= NULL
;
1780 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1782 complain (&rs6000_builtin_complaint
, typenum
);
1783 return builtin_type_error
;
1785 if (negative_types
[-typenum
] != NULL
)
1786 return negative_types
[-typenum
];
1788 #if TARGET_CHAR_BIT != 8
1789 #error This code wrong for TARGET_CHAR_BIT not 8
1790 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1791 that if that ever becomes not true, the correct fix will be to
1792 make the size in the struct type to be in bits, not in units of
1799 /* The size of this and all the other types are fixed, defined
1800 by the debugging format. If there is a type called "int" which
1801 is other than 32 bits, then it should use a new negative type
1802 number (or avoid negative type numbers for that case).
1803 See stabs.texinfo. */
1804 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1807 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1810 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1813 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1816 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1817 "unsigned char", NULL
);
1820 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1823 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1824 "unsigned short", NULL
);
1827 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1828 "unsigned int", NULL
);
1831 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1834 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1835 "unsigned long", NULL
);
1838 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1841 /* IEEE single precision (32 bit). */
1842 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1845 /* IEEE double precision (64 bit). */
1846 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1849 /* This is an IEEE double on the RS/6000, and different machines with
1850 different sizes for "long double" should use different negative
1851 type numbers. See stabs.texinfo. */
1852 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1855 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1858 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1861 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1864 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1867 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1870 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1874 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1878 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1882 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1886 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1890 /* Complex type consisting of two IEEE single precision values. */
1891 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1894 /* Complex type consisting of two IEEE double precision values. */
1895 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1898 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1901 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1904 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1907 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1910 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1913 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1914 "unsigned long long", NULL
);
1917 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1921 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1924 negative_types
[-typenum
] = rettype
;
1928 /* This page contains subroutines of read_type. */
1930 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1931 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1932 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1933 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1935 /* Read member function stabs info for C++ classes. The form of each member
1938 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1940 An example with two member functions is:
1942 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1944 For the case of overloaded operators, the format is op$::*.funcs, where
1945 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1946 name (such as `+=') and `.' marks the end of the operator name.
1948 Returns 1 for success, 0 for failure. */
1951 read_member_functions (fip
, pp
, type
, objfile
)
1952 struct field_info
*fip
;
1955 struct objfile
*objfile
;
1959 /* Total number of member functions defined in this class. If the class
1960 defines two `f' functions, and one `g' function, then this will have
1962 int total_length
= 0;
1966 struct next_fnfield
*next
;
1967 struct fn_field fn_field
;
1969 struct type
*look_ahead_type
;
1970 struct next_fnfieldlist
*new_fnlist
;
1971 struct next_fnfield
*new_sublist
;
1975 /* Process each list until we find something that is not a member function
1976 or find the end of the functions. */
1980 /* We should be positioned at the start of the function name.
1981 Scan forward to find the first ':' and if it is not the
1982 first of a "::" delimiter, then this is not a member function. */
1994 look_ahead_type
= NULL
;
1997 new_fnlist
= (struct next_fnfieldlist
*)
1998 xmalloc (sizeof (struct next_fnfieldlist
));
1999 make_cleanup (free
, new_fnlist
);
2000 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2002 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
2004 /* This is a completely wierd case. In order to stuff in the
2005 names that might contain colons (the usual name delimiter),
2006 Mike Tiemann defined a different name format which is
2007 signalled if the identifier is "op$". In that case, the
2008 format is "op$::XXXX." where XXXX is the name. This is
2009 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2010 /* This lets the user type "break operator+".
2011 We could just put in "+" as the name, but that wouldn't
2013 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
2014 char *o
= opname
+ 3;
2016 /* Skip past '::'. */
2019 STABS_CONTINUE (pp
, objfile
);
2025 main_fn_name
= savestring (opname
, o
- opname
);
2031 main_fn_name
= savestring (*pp
, p
- *pp
);
2032 /* Skip past '::'. */
2035 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2040 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2041 make_cleanup (free
, new_sublist
);
2042 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2044 /* Check for and handle cretinous dbx symbol name continuation! */
2045 if (look_ahead_type
== NULL
)
2048 STABS_CONTINUE (pp
, objfile
);
2050 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2053 /* Invalid symtab info for member function. */
2059 /* g++ version 1 kludge */
2060 new_sublist
-> fn_field
.type
= look_ahead_type
;
2061 look_ahead_type
= NULL
;
2071 /* If this is just a stub, then we don't have the real name here. */
2073 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2075 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2076 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2077 new_sublist
-> fn_field
.is_stub
= 1;
2079 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2082 /* Set this member function's visibility fields. */
2085 case VISIBILITY_PRIVATE
:
2086 new_sublist
-> fn_field
.is_private
= 1;
2088 case VISIBILITY_PROTECTED
:
2089 new_sublist
-> fn_field
.is_protected
= 1;
2093 STABS_CONTINUE (pp
, objfile
);
2096 case 'A': /* Normal functions. */
2097 new_sublist
-> fn_field
.is_const
= 0;
2098 new_sublist
-> fn_field
.is_volatile
= 0;
2101 case 'B': /* `const' member functions. */
2102 new_sublist
-> fn_field
.is_const
= 1;
2103 new_sublist
-> fn_field
.is_volatile
= 0;
2106 case 'C': /* `volatile' member function. */
2107 new_sublist
-> fn_field
.is_const
= 0;
2108 new_sublist
-> fn_field
.is_volatile
= 1;
2111 case 'D': /* `const volatile' member function. */
2112 new_sublist
-> fn_field
.is_const
= 1;
2113 new_sublist
-> fn_field
.is_volatile
= 1;
2116 case '*': /* File compiled with g++ version 1 -- no info */
2121 complain (&const_vol_complaint
, **pp
);
2130 /* virtual member function, followed by index.
2131 The sign bit is set to distinguish pointers-to-methods
2132 from virtual function indicies. Since the array is
2133 in words, the quantity must be shifted left by 1
2134 on 16 bit machine, and by 2 on 32 bit machine, forcing
2135 the sign bit out, and usable as a valid index into
2136 the array. Remove the sign bit here. */
2137 new_sublist
-> fn_field
.voffset
=
2138 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2142 STABS_CONTINUE (pp
, objfile
);
2143 if (**pp
== ';' || **pp
== '\0')
2145 /* Must be g++ version 1. */
2146 new_sublist
-> fn_field
.fcontext
= 0;
2150 /* Figure out from whence this virtual function came.
2151 It may belong to virtual function table of
2152 one of its baseclasses. */
2153 look_ahead_type
= read_type (pp
, objfile
);
2156 /* g++ version 1 overloaded methods. */
2160 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2169 look_ahead_type
= NULL
;
2175 /* static member function. */
2176 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2177 if (strncmp (new_sublist
-> fn_field
.physname
,
2178 main_fn_name
, strlen (main_fn_name
)))
2180 new_sublist
-> fn_field
.is_stub
= 1;
2186 complain (&member_fn_complaint
, (*pp
)[-1]);
2187 /* Fall through into normal member function. */
2190 /* normal member function. */
2191 new_sublist
-> fn_field
.voffset
= 0;
2192 new_sublist
-> fn_field
.fcontext
= 0;
2196 new_sublist
-> next
= sublist
;
2197 sublist
= new_sublist
;
2199 STABS_CONTINUE (pp
, objfile
);
2201 while (**pp
!= ';' && **pp
!= '\0');
2205 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2206 obstack_alloc (&objfile
-> type_obstack
,
2207 sizeof (struct fn_field
) * length
);
2208 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2209 sizeof (struct fn_field
) * length
);
2210 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2212 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2215 new_fnlist
-> fn_fieldlist
.length
= length
;
2216 new_fnlist
-> next
= fip
-> fnlist
;
2217 fip
-> fnlist
= new_fnlist
;
2219 total_length
+= length
;
2220 STABS_CONTINUE (pp
, objfile
);
2225 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2226 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2227 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2228 memset (TYPE_FN_FIELDLISTS (type
), 0,
2229 sizeof (struct fn_fieldlist
) * nfn_fields
);
2230 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2231 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2237 /* Special GNU C++ name.
2239 Returns 1 for success, 0 for failure. "failure" means that we can't
2240 keep parsing and it's time for error_type(). */
2243 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2244 struct field_info
*fip
;
2247 struct objfile
*objfile
;
2252 struct type
*context
;
2262 /* At this point, *pp points to something like "22:23=*22...",
2263 where the type number before the ':' is the "context" and
2264 everything after is a regular type definition. Lookup the
2265 type, find it's name, and construct the field name. */
2267 context
= read_type (pp
, objfile
);
2271 case 'f': /* $vf -- a virtual function table pointer */
2272 fip
->list
->field
.name
=
2273 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2276 case 'b': /* $vb -- a virtual bsomethingorother */
2277 name
= type_name_no_tag (context
);
2280 complain (&invalid_cpp_type_complaint
, symnum
);
2283 fip
->list
->field
.name
=
2284 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2288 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2289 fip
->list
->field
.name
=
2290 obconcat (&objfile
->type_obstack
,
2291 "INVALID_CPLUSPLUS_ABBREV", "", "");
2295 /* At this point, *pp points to the ':'. Skip it and read the
2301 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2304 fip
->list
->field
.type
= read_type (pp
, objfile
);
2306 (*pp
)++; /* Skip the comma. */
2312 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2316 /* This field is unpacked. */
2317 fip
->list
->field
.bitsize
= 0;
2318 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2322 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2323 /* We have no idea what syntax an unrecognized abbrev would have, so
2324 better return 0. If we returned 1, we would need to at least advance
2325 *pp to avoid an infinite loop. */
2332 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2333 struct field_info
*fip
;
2337 struct objfile
*objfile
;
2339 /* The following is code to work around cfront generated stabs.
2340 The stabs contains full mangled name for each field.
2341 We try to demangle the name and extract the field name out of it.
2343 if (ARM_DEMANGLING
&& current_subfile
->language
== language_cplus
)
2349 dem
= cplus_demangle (*pp
, DMGL_ANSI
| DMGL_PARAMS
);
2352 dem_p
= strrchr (dem
, ':');
2353 if (dem_p
!= 0 && *(dem_p
-1)==':')
2355 fip
->list
->field
.name
=
2356 obsavestring (dem_p
, strlen(dem_p
), &objfile
-> type_obstack
);
2360 fip
->list
->field
.name
=
2361 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2365 /* end of code for cfront work around */
2368 fip
-> list
-> field
.name
=
2369 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2372 /* This means we have a visibility for a field coming. */
2376 fip
-> list
-> visibility
= *(*pp
)++;
2380 /* normal dbx-style format, no explicit visibility */
2381 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2384 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2389 /* Possible future hook for nested types. */
2392 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2398 /* Static class member. */
2399 fip
-> list
-> field
.bitpos
= (long) -1;
2405 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2409 else if (**pp
!= ',')
2411 /* Bad structure-type format. */
2412 complain (&stabs_general_complaint
, "bad structure-type format");
2416 (*pp
)++; /* Skip the comma. */
2420 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2423 complain (&stabs_general_complaint
, "bad structure-type format");
2426 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2429 complain (&stabs_general_complaint
, "bad structure-type format");
2434 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2436 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2437 it is a field which has been optimized out. The correct stab for
2438 this case is to use VISIBILITY_IGNORE, but that is a recent
2439 invention. (2) It is a 0-size array. For example
2440 union { int num; char str[0]; } foo. Printing "<no value>" for
2441 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2442 will continue to work, and a 0-size array as a whole doesn't
2443 have any contents to print.
2445 I suspect this probably could also happen with gcc -gstabs (not
2446 -gstabs+) for static fields, and perhaps other C++ extensions.
2447 Hopefully few people use -gstabs with gdb, since it is intended
2448 for dbx compatibility. */
2450 /* Ignore this field. */
2451 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2455 /* Detect an unpacked field and mark it as such.
2456 dbx gives a bit size for all fields.
2457 Note that forward refs cannot be packed,
2458 and treat enums as if they had the width of ints. */
2460 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2461 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2463 fip
-> list
-> field
.bitsize
= 0;
2465 if ((fip
-> list
-> field
.bitsize
2466 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2467 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2468 && (fip
-> list
-> field
.bitsize
2473 fip
-> list
-> field
.bitpos
% 8 == 0)
2475 fip
-> list
-> field
.bitsize
= 0;
2481 /* Read struct or class data fields. They have the form:
2483 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2485 At the end, we see a semicolon instead of a field.
2487 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2490 The optional VISIBILITY is one of:
2492 '/0' (VISIBILITY_PRIVATE)
2493 '/1' (VISIBILITY_PROTECTED)
2494 '/2' (VISIBILITY_PUBLIC)
2495 '/9' (VISIBILITY_IGNORE)
2497 or nothing, for C style fields with public visibility.
2499 Returns 1 for success, 0 for failure. */
2502 read_struct_fields (fip
, pp
, type
, objfile
)
2503 struct field_info
*fip
;
2506 struct objfile
*objfile
;
2509 struct nextfield
*new;
2511 /* We better set p right now, in case there are no fields at all... */
2515 /* Read each data member type until we find the terminating ';' at the end of
2516 the data member list, or break for some other reason such as finding the
2517 start of the member function list. */
2521 if (os9k_stabs
&& **pp
== ',') break;
2522 STABS_CONTINUE (pp
, objfile
);
2523 /* Get space to record the next field's data. */
2524 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2525 make_cleanup (free
, new);
2526 memset (new, 0, sizeof (struct nextfield
));
2527 new -> next
= fip
-> list
;
2530 /* Get the field name. */
2533 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2534 unless the CPLUS_MARKER is followed by an underscore, in
2535 which case it is just the name of an anonymous type, which we
2536 should handle like any other type name. We accept either '$'
2537 or '.', because a field name can never contain one of these
2538 characters except as a CPLUS_MARKER (we probably should be
2539 doing that in most parts of GDB). */
2541 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2543 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2548 /* Look for the ':' that separates the field name from the field
2549 values. Data members are delimited by a single ':', while member
2550 functions are delimited by a pair of ':'s. When we hit the member
2551 functions (if any), terminate scan loop and return. */
2553 while (*p
!= ':' && *p
!= '\0')
2560 /* Check to see if we have hit the member functions yet. */
2565 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2567 if (p
[0] == ':' && p
[1] == ':')
2569 /* chill the list of fields: the last entry (at the head) is a
2570 partially constructed entry which we now scrub. */
2571 fip
-> list
= fip
-> list
-> next
;
2576 /* The stabs for C++ derived classes contain baseclass information which
2577 is marked by a '!' character after the total size. This function is
2578 called when we encounter the baseclass marker, and slurps up all the
2579 baseclass information.
2581 Immediately following the '!' marker is the number of base classes that
2582 the class is derived from, followed by information for each base class.
2583 For each base class, there are two visibility specifiers, a bit offset
2584 to the base class information within the derived class, a reference to
2585 the type for the base class, and a terminating semicolon.
2587 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2589 Baseclass information marker __________________|| | | | | | |
2590 Number of baseclasses __________________________| | | | | | |
2591 Visibility specifiers (2) ________________________| | | | | |
2592 Offset in bits from start of class _________________| | | | |
2593 Type number for base class ___________________________| | | |
2594 Visibility specifiers (2) _______________________________| | |
2595 Offset in bits from start of class ________________________| |
2596 Type number of base class ____________________________________|
2598 Return 1 for success, 0 for (error-type-inducing) failure. */
2601 read_baseclasses (fip
, pp
, type
, objfile
)
2602 struct field_info
*fip
;
2605 struct objfile
*objfile
;
2608 struct nextfield
*new;
2616 /* Skip the '!' baseclass information marker. */
2620 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2623 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2629 /* Some stupid compilers have trouble with the following, so break
2630 it up into simpler expressions. */
2631 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2632 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2635 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2638 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2639 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2643 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2645 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2647 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2648 make_cleanup (free
, new);
2649 memset (new, 0, sizeof (struct nextfield
));
2650 new -> next
= fip
-> list
;
2652 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2654 STABS_CONTINUE (pp
, objfile
);
2658 /* Nothing to do. */
2661 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2664 /* Unknown character. Complain and treat it as non-virtual. */
2666 static struct complaint msg
= {
2667 "Unknown virtual character `%c' for baseclass", 0, 0};
2668 complain (&msg
, **pp
);
2673 new -> visibility
= *(*pp
)++;
2674 switch (new -> visibility
)
2676 case VISIBILITY_PRIVATE
:
2677 case VISIBILITY_PROTECTED
:
2678 case VISIBILITY_PUBLIC
:
2681 /* Bad visibility format. Complain and treat it as
2684 static struct complaint msg
= {
2685 "Unknown visibility `%c' for baseclass", 0, 0};
2686 complain (&msg
, new -> visibility
);
2687 new -> visibility
= VISIBILITY_PUBLIC
;
2694 /* The remaining value is the bit offset of the portion of the object
2695 corresponding to this baseclass. Always zero in the absence of
2696 multiple inheritance. */
2698 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2703 /* The last piece of baseclass information is the type of the
2704 base class. Read it, and remember it's type name as this
2707 new -> field
.type
= read_type (pp
, objfile
);
2708 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2710 /* skip trailing ';' and bump count of number of fields seen */
2719 /* The tail end of stabs for C++ classes that contain a virtual function
2720 pointer contains a tilde, a %, and a type number.
2721 The type number refers to the base class (possibly this class itself) which
2722 contains the vtable pointer for the current class.
2724 This function is called when we have parsed all the method declarations,
2725 so we can look for the vptr base class info. */
2728 read_tilde_fields (fip
, pp
, type
, objfile
)
2729 struct field_info
*fip
;
2732 struct objfile
*objfile
;
2736 STABS_CONTINUE (pp
, objfile
);
2738 /* If we are positioned at a ';', then skip it. */
2748 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2750 /* Obsolete flags that used to indicate the presence
2751 of constructors and/or destructors. */
2755 /* Read either a '%' or the final ';'. */
2756 if (*(*pp
)++ == '%')
2758 /* The next number is the type number of the base class
2759 (possibly our own class) which supplies the vtable for
2760 this class. Parse it out, and search that class to find
2761 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2762 and TYPE_VPTR_FIELDNO. */
2767 t
= read_type (pp
, objfile
);
2769 while (*p
!= '\0' && *p
!= ';')
2775 /* Premature end of symbol. */
2779 TYPE_VPTR_BASETYPE (type
) = t
;
2780 if (type
== t
) /* Our own class provides vtbl ptr */
2782 for (i
= TYPE_NFIELDS (t
) - 1;
2783 i
>= TYPE_N_BASECLASSES (t
);
2786 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2787 sizeof (vptr_name
) - 1))
2789 TYPE_VPTR_FIELDNO (type
) = i
;
2793 /* Virtual function table field not found. */
2794 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2799 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2810 attach_fn_fields_to_type (fip
, type
)
2811 struct field_info
*fip
;
2812 register struct type
*type
;
2816 for (n
= TYPE_NFN_FIELDS (type
);
2817 fip
-> fnlist
!= NULL
;
2818 fip
-> fnlist
= fip
-> fnlist
-> next
)
2820 --n
; /* Circumvent Sun3 compiler bug */
2821 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2826 /* Create the vector of fields, and record how big it is.
2827 We need this info to record proper virtual function table information
2828 for this class's virtual functions. */
2831 attach_fields_to_type (fip
, type
, objfile
)
2832 struct field_info
*fip
;
2833 register struct type
*type
;
2834 struct objfile
*objfile
;
2836 register int nfields
= 0;
2837 register int non_public_fields
= 0;
2838 register struct nextfield
*scan
;
2840 /* Count up the number of fields that we have, as well as taking note of
2841 whether or not there are any non-public fields, which requires us to
2842 allocate and build the private_field_bits and protected_field_bits
2845 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2848 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2850 non_public_fields
++;
2854 /* Now we know how many fields there are, and whether or not there are any
2855 non-public fields. Record the field count, allocate space for the
2856 array of fields, and create blank visibility bitfields if necessary. */
2858 TYPE_NFIELDS (type
) = nfields
;
2859 TYPE_FIELDS (type
) = (struct field
*)
2860 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2861 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2863 if (non_public_fields
)
2865 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2867 TYPE_FIELD_PRIVATE_BITS (type
) =
2868 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2869 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2871 TYPE_FIELD_PROTECTED_BITS (type
) =
2872 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2873 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2875 TYPE_FIELD_IGNORE_BITS (type
) =
2876 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2877 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2880 /* Copy the saved-up fields into the field vector. Start from the head
2881 of the list, adding to the tail of the field array, so that they end
2882 up in the same order in the array in which they were added to the list. */
2884 while (nfields
-- > 0)
2886 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2887 switch (fip
-> list
-> visibility
)
2889 case VISIBILITY_PRIVATE
:
2890 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2893 case VISIBILITY_PROTECTED
:
2894 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2897 case VISIBILITY_IGNORE
:
2898 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2901 case VISIBILITY_PUBLIC
:
2905 /* Unknown visibility. Complain and treat it as public. */
2907 static struct complaint msg
= {
2908 "Unknown visibility `%c' for field", 0, 0};
2909 complain (&msg
, fip
-> list
-> visibility
);
2913 fip
-> list
= fip
-> list
-> next
;
2918 /* Read the description of a structure (or union type) and return an object
2919 describing the type.
2921 PP points to a character pointer that points to the next unconsumed token
2922 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2923 *PP will point to "4a:1,0,32;;".
2925 TYPE points to an incomplete type that needs to be filled in.
2927 OBJFILE points to the current objfile from which the stabs information is
2928 being read. (Note that it is redundant in that TYPE also contains a pointer
2929 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2932 static struct type
*
2933 read_struct_type (pp
, type
, objfile
)
2936 struct objfile
*objfile
;
2938 struct cleanup
*back_to
;
2939 struct field_info fi
;
2944 back_to
= make_cleanup (null_cleanup
, 0);
2946 INIT_CPLUS_SPECIFIC (type
);
2947 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2949 /* First comes the total size in bytes. */
2953 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2955 return error_type (pp
, objfile
);
2958 /* Now read the baseclasses, if any, read the regular C struct or C++
2959 class member fields, attach the fields to the type, read the C++
2960 member functions, attach them to the type, and then read any tilde
2961 field (baseclass specifier for the class holding the main vtable). */
2963 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2964 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2965 || !attach_fields_to_type (&fi
, type
, objfile
)
2966 || !read_member_functions (&fi
, pp
, type
, objfile
)
2967 || !attach_fn_fields_to_type (&fi
, type
)
2968 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2970 do_cleanups (back_to
);
2971 return (error_type (pp
, objfile
));
2974 do_cleanups (back_to
);
2978 /* Read a definition of an array type,
2979 and create and return a suitable type object.
2980 Also creates a range type which represents the bounds of that
2983 static struct type
*
2984 read_array_type (pp
, type
, objfile
)
2986 register struct type
*type
;
2987 struct objfile
*objfile
;
2989 struct type
*index_type
, *element_type
, *range_type
;
2994 /* Format of an array type:
2995 "ar<index type>;lower;upper;<array_contents_type>".
2996 OS9000: "arlower,upper;<array_contents_type>".
2998 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2999 for these, produce a type like float[][]. */
3002 index_type
= builtin_type_int
;
3005 index_type
= read_type (pp
, objfile
);
3007 /* Improper format of array type decl. */
3008 return error_type (pp
, objfile
);
3012 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3017 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
3019 return error_type (pp
, objfile
);
3021 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3026 upper
= read_huge_number (pp
, ';', &nbits
);
3028 return error_type (pp
, objfile
);
3030 element_type
= read_type (pp
, objfile
);
3039 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3040 type
= create_array_type (type
, element_type
, range_type
);
3046 /* Read a definition of an enumeration type,
3047 and create and return a suitable type object.
3048 Also defines the symbols that represent the values of the type. */
3050 static struct type
*
3051 read_enum_type (pp
, type
, objfile
)
3053 register struct type
*type
;
3054 struct objfile
*objfile
;
3059 register struct symbol
*sym
;
3061 struct pending
**symlist
;
3062 struct pending
*osyms
, *syms
;
3065 int unsigned_enum
= 1;
3068 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3069 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3070 to do? For now, force all enum values to file scope. */
3071 if (within_function
)
3072 symlist
= &local_symbols
;
3075 symlist
= &file_symbols
;
3077 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3081 /* Size. Perhaps this does not have to be conditionalized on
3082 os9k_stabs (assuming the name of an enum constant can't start
3084 read_huge_number (pp
, 0, &nbits
);
3086 return error_type (pp
, objfile
);
3089 /* The aix4 compiler emits an extra field before the enum members;
3090 my guess is it's a type of some sort. Just ignore it. */
3093 /* Skip over the type. */
3097 /* Skip over the colon. */
3101 /* Read the value-names and their values.
3102 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3103 A semicolon or comma instead of a NAME means the end. */
3104 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3106 STABS_CONTINUE (pp
, objfile
);
3108 while (*p
!= ':') p
++;
3109 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3111 n
= read_huge_number (pp
, ',', &nbits
);
3113 return error_type (pp
, objfile
);
3115 sym
= (struct symbol
*)
3116 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3117 memset (sym
, 0, sizeof (struct symbol
));
3118 SYMBOL_NAME (sym
) = name
;
3119 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3120 SYMBOL_CLASS (sym
) = LOC_CONST
;
3121 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3122 SYMBOL_VALUE (sym
) = n
;
3125 add_symbol_to_list (sym
, symlist
);
3130 (*pp
)++; /* Skip the semicolon. */
3132 /* Now fill in the fields of the type-structure. */
3134 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3135 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3136 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3138 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3139 TYPE_NFIELDS (type
) = nsyms
;
3140 TYPE_FIELDS (type
) = (struct field
*)
3141 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3142 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3144 /* Find the symbols for the values and put them into the type.
3145 The symbols can be found in the symlist that we put them on
3146 to cause them to be defined. osyms contains the old value
3147 of that symlist; everything up to there was defined by us. */
3148 /* Note that we preserve the order of the enum constants, so
3149 that in something like "enum {FOO, LAST_THING=FOO}" we print
3150 FOO, not LAST_THING. */
3152 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3154 int last
= syms
== osyms
? o_nsyms
: 0;
3155 int j
= syms
->nsyms
;
3156 for (; --j
>= last
; --n
)
3158 struct symbol
*xsym
= syms
->symbol
[j
];
3159 SYMBOL_TYPE (xsym
) = type
;
3160 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3161 TYPE_FIELD_VALUE (type
, n
) = 0;
3162 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3163 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3172 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3173 typedefs in every file (for int, long, etc):
3175 type = b <signed> <width>; <offset>; <nbits>
3176 signed = u or s. Possible c in addition to u or s (for char?).
3177 offset = offset from high order bit to start bit of type.
3178 width is # bytes in object of this type, nbits is # bits in type.
3180 The width/offset stuff appears to be for small objects stored in
3181 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3184 static struct type
*
3185 read_sun_builtin_type (pp
, typenums
, objfile
)
3188 struct objfile
*objfile
;
3203 return error_type (pp
, objfile
);
3207 /* For some odd reason, all forms of char put a c here. This is strange
3208 because no other type has this honor. We can safely ignore this because
3209 we actually determine 'char'acterness by the number of bits specified in
3215 /* The first number appears to be the number of bytes occupied
3216 by this type, except that unsigned short is 4 instead of 2.
3217 Since this information is redundant with the third number,
3218 we will ignore it. */
3219 read_huge_number (pp
, ';', &nbits
);
3221 return error_type (pp
, objfile
);
3223 /* The second number is always 0, so ignore it too. */
3224 read_huge_number (pp
, ';', &nbits
);
3226 return error_type (pp
, objfile
);
3228 /* The third number is the number of bits for this type. */
3229 type_bits
= read_huge_number (pp
, 0, &nbits
);
3231 return error_type (pp
, objfile
);
3232 /* The type *should* end with a semicolon. If it are embedded
3233 in a larger type the semicolon may be the only way to know where
3234 the type ends. If this type is at the end of the stabstring we
3235 can deal with the omitted semicolon (but we don't have to like
3236 it). Don't bother to complain(), Sun's compiler omits the semicolon
3242 return init_type (TYPE_CODE_VOID
, 1,
3243 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3246 return init_type (TYPE_CODE_INT
,
3247 type_bits
/ TARGET_CHAR_BIT
,
3248 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3252 static struct type
*
3253 read_sun_floating_type (pp
, typenums
, objfile
)
3256 struct objfile
*objfile
;
3262 /* The first number has more details about the type, for example
3264 details
= read_huge_number (pp
, ';', &nbits
);
3266 return error_type (pp
, objfile
);
3268 /* The second number is the number of bytes occupied by this type */
3269 nbytes
= read_huge_number (pp
, ';', &nbits
);
3271 return error_type (pp
, objfile
);
3273 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3274 || details
== NF_COMPLEX32
)
3275 /* This is a type we can't handle, but we do know the size.
3276 We also will be able to give it a name. */
3277 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3279 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3282 /* Read a number from the string pointed to by *PP.
3283 The value of *PP is advanced over the number.
3284 If END is nonzero, the character that ends the
3285 number must match END, or an error happens;
3286 and that character is skipped if it does match.
3287 If END is zero, *PP is left pointing to that character.
3289 If the number fits in a long, set *BITS to 0 and return the value.
3290 If not, set *BITS to be the number of bits in the number and return 0.
3292 If encounter garbage, set *BITS to -1 and return 0. */
3295 read_huge_number (pp
, end
, bits
)
3315 /* Leading zero means octal. GCC uses this to output values larger
3316 than an int (because that would be hard in decimal). */
3324 upper_limit
= ULONG_MAX
/ radix
;
3326 upper_limit
= LONG_MAX
/ radix
;
3328 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3330 if (n
<= upper_limit
)
3333 n
+= c
- '0'; /* FIXME this overflows anyway */
3338 /* This depends on large values being output in octal, which is
3345 /* Ignore leading zeroes. */
3349 else if (c
== '2' || c
== '3')
3375 /* Large decimal constants are an error (because it is hard to
3376 count how many bits are in them). */
3382 /* -0x7f is the same as 0x80. So deal with it by adding one to
3383 the number of bits. */
3395 /* It's *BITS which has the interesting information. */
3399 static struct type
*
3400 read_range_type (pp
, typenums
, objfile
)
3403 struct objfile
*objfile
;
3405 char *orig_pp
= *pp
;
3410 struct type
*result_type
;
3411 struct type
*index_type
= NULL
;
3413 /* First comes a type we are a subrange of.
3414 In C it is usually 0, 1 or the type being defined. */
3415 if (read_type_number (pp
, rangenums
) != 0)
3416 return error_type (pp
, objfile
);
3417 self_subrange
= (rangenums
[0] == typenums
[0] &&
3418 rangenums
[1] == typenums
[1]);
3423 index_type
= read_type (pp
, objfile
);
3426 /* A semicolon should now follow; skip it. */
3430 /* The remaining two operands are usually lower and upper bounds
3431 of the range. But in some special cases they mean something else. */
3432 n2
= read_huge_number (pp
, ';', &n2bits
);
3433 n3
= read_huge_number (pp
, ';', &n3bits
);
3435 if (n2bits
== -1 || n3bits
== -1)
3436 return error_type (pp
, objfile
);
3439 goto handle_true_range
;
3441 /* If limits are huge, must be large integral type. */
3442 if (n2bits
!= 0 || n3bits
!= 0)
3444 char got_signed
= 0;
3445 char got_unsigned
= 0;
3446 /* Number of bits in the type. */
3449 /* Range from 0 to <large number> is an unsigned large integral type. */
3450 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3455 /* Range from <large number> to <large number>-1 is a large signed
3456 integral type. Take care of the case where <large number> doesn't
3457 fit in a long but <large number>-1 does. */
3458 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3459 || (n2bits
!= 0 && n3bits
== 0
3460 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3467 if (got_signed
|| got_unsigned
)
3469 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3470 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3474 return error_type (pp
, objfile
);
3477 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3478 if (self_subrange
&& n2
== 0 && n3
== 0)
3479 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3481 /* If n3 is zero and n2 is positive, we want a floating type,
3482 and n2 is the width in bytes.
3484 Fortran programs appear to use this for complex types also,
3485 and they give no way to distinguish between double and single-complex!
3487 GDB does not have complex types.
3489 Just return the complex as a float of that size. It won't work right
3490 for the complex values, but at least it makes the file loadable. */
3492 if (n3
== 0 && n2
> 0)
3494 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3497 /* If the upper bound is -1, it must really be an unsigned int. */
3499 else if (n2
== 0 && n3
== -1)
3501 /* It is unsigned int or unsigned long. */
3502 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3503 compatibility hack. */
3504 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3505 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3508 /* Special case: char is defined (Who knows why) as a subrange of
3509 itself with range 0-127. */
3510 else if (self_subrange
&& n2
== 0 && n3
== 127)
3511 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3513 else if (current_symbol
&& SYMBOL_LANGUAGE (current_symbol
) == language_chill
3514 && SYMBOL_LINE (current_symbol
) > 0)
3515 goto handle_true_range
;
3517 /* We used to do this only for subrange of self or subrange of int. */
3521 /* n3 actually gives the size. */
3522 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3525 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3527 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3529 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3530 "unsigned long", and we already checked for that,
3531 so don't need to test for it here. */
3533 /* I think this is for Convex "long long". Since I don't know whether
3534 Convex sets self_subrange, I also accept that particular size regardless
3535 of self_subrange. */
3536 else if (n3
== 0 && n2
< 0
3538 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3539 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3540 else if (n2
== -n3
-1)
3543 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3545 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3546 if (n3
== 0x7fffffff)
3547 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3550 /* We have a real range type on our hands. Allocate space and
3551 return a real pointer. */
3554 /* At this point I don't have the faintest idea how to deal with
3555 a self_subrange type; I'm going to assume that this is used
3556 as an idiom, and that all of them are special cases. So . . . */
3558 return error_type (pp
, objfile
);
3560 index_type
= *dbx_lookup_type (rangenums
);
3561 if (index_type
== NULL
)
3563 /* Does this actually ever happen? Is that why we are worrying
3564 about dealing with it rather than just calling error_type? */
3566 static struct type
*range_type_index
;
3568 complain (&range_type_base_complaint
, rangenums
[1]);
3569 if (range_type_index
== NULL
)
3571 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3572 0, "range type index type", NULL
);
3573 index_type
= range_type_index
;
3576 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3577 return (result_type
);
3580 /* Read in an argument list. This is a list of types, separated by commas
3581 and terminated with END. Return the list of types read in, or (struct type
3582 **)-1 if there is an error. */
3584 static struct type
**
3585 read_args (pp
, end
, objfile
)
3588 struct objfile
*objfile
;
3590 /* FIXME! Remove this arbitrary limit! */
3591 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3597 /* Invalid argument list: no ','. */
3598 return (struct type
**)-1;
3600 STABS_CONTINUE (pp
, objfile
);
3601 types
[n
++] = read_type (pp
, objfile
);
3603 (*pp
)++; /* get past `end' (the ':' character) */
3607 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3609 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3611 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3612 memset (rval
+ n
, 0, sizeof (struct type
*));
3616 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3618 memcpy (rval
, types
, n
* sizeof (struct type
*));
3622 /* Common block handling. */
3624 /* List of symbols declared since the last BCOMM. This list is a tail
3625 of local_symbols. When ECOMM is seen, the symbols on the list
3626 are noted so their proper addresses can be filled in later,
3627 using the common block base address gotten from the assembler
3630 static struct pending
*common_block
;
3631 static int common_block_i
;
3633 /* Name of the current common block. We get it from the BCOMM instead of the
3634 ECOMM to match IBM documentation (even though IBM puts the name both places
3635 like everyone else). */
3636 static char *common_block_name
;
3638 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3639 to remain after this function returns. */
3642 common_block_start (name
, objfile
)
3644 struct objfile
*objfile
;
3646 if (common_block_name
!= NULL
)
3648 static struct complaint msg
= {
3649 "Invalid symbol data: common block within common block",
3653 common_block
= local_symbols
;
3654 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3655 common_block_name
= obsavestring (name
, strlen (name
),
3656 &objfile
-> symbol_obstack
);
3659 /* Process a N_ECOMM symbol. */
3662 common_block_end (objfile
)
3663 struct objfile
*objfile
;
3665 /* Symbols declared since the BCOMM are to have the common block
3666 start address added in when we know it. common_block and
3667 common_block_i point to the first symbol after the BCOMM in
3668 the local_symbols list; copy the list and hang it off the
3669 symbol for the common block name for later fixup. */
3672 struct pending
*new = 0;
3673 struct pending
*next
;
3676 if (common_block_name
== NULL
)
3678 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3683 sym
= (struct symbol
*)
3684 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3685 memset (sym
, 0, sizeof (struct symbol
));
3686 SYMBOL_NAME (sym
) = common_block_name
;
3687 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3689 /* Now we copy all the symbols which have been defined since the BCOMM. */
3691 /* Copy all the struct pendings before common_block. */
3692 for (next
= local_symbols
;
3693 next
!= NULL
&& next
!= common_block
;
3696 for (j
= 0; j
< next
->nsyms
; j
++)
3697 add_symbol_to_list (next
->symbol
[j
], &new);
3700 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3701 NULL, it means copy all the local symbols (which we already did
3704 if (common_block
!= NULL
)
3705 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3706 add_symbol_to_list (common_block
->symbol
[j
], &new);
3708 SYMBOL_TYPE (sym
) = (struct type
*) new;
3710 /* Should we be putting local_symbols back to what it was?
3713 i
= hashname (SYMBOL_NAME (sym
));
3714 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3715 global_sym_chain
[i
] = sym
;
3716 common_block_name
= NULL
;
3719 /* Add a common block's start address to the offset of each symbol
3720 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3721 the common block name). */
3724 fix_common_block (sym
, valu
)
3728 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3729 for ( ; next
; next
= next
->next
)
3732 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3733 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3739 /* What about types defined as forward references inside of a small lexical
3741 /* Add a type to the list of undefined types to be checked through
3742 once this file has been read in. */
3745 add_undefined_type (type
)
3748 if (undef_types_length
== undef_types_allocated
)
3750 undef_types_allocated
*= 2;
3751 undef_types
= (struct type
**)
3752 xrealloc ((char *) undef_types
,
3753 undef_types_allocated
* sizeof (struct type
*));
3755 undef_types
[undef_types_length
++] = type
;
3758 /* Go through each undefined type, see if it's still undefined, and fix it
3759 up if possible. We have two kinds of undefined types:
3761 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3762 Fix: update array length using the element bounds
3763 and the target type's length.
3764 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3765 yet defined at the time a pointer to it was made.
3766 Fix: Do a full lookup on the struct/union tag. */
3768 cleanup_undefined_types ()
3772 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3774 switch (TYPE_CODE (*type
))
3777 case TYPE_CODE_STRUCT
:
3778 case TYPE_CODE_UNION
:
3779 case TYPE_CODE_ENUM
:
3781 /* Check if it has been defined since. Need to do this here
3782 as well as in check_typedef to deal with the (legitimate in
3783 C though not C++) case of several types with the same name
3784 in different source files. */
3785 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3787 struct pending
*ppt
;
3789 /* Name of the type, without "struct" or "union" */
3790 char *typename
= TYPE_TAG_NAME (*type
);
3792 if (typename
== NULL
)
3794 static struct complaint msg
= {"need a type name", 0, 0};
3798 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3800 for (i
= 0; i
< ppt
->nsyms
; i
++)
3802 struct symbol
*sym
= ppt
->symbol
[i
];
3804 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3805 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3806 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3808 && STREQ (SYMBOL_NAME (sym
), typename
))
3810 memcpy (*type
, SYMBOL_TYPE (sym
),
3811 sizeof (struct type
));
3822 static struct complaint msg
= {"\
3823 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3824 complain (&msg
, TYPE_CODE (*type
));
3830 undef_types_length
= 0;
3833 /* Scan through all of the global symbols defined in the object file,
3834 assigning values to the debugging symbols that need to be assigned
3835 to. Get these symbols from the minimal symbol table. */
3838 scan_file_globals (objfile
)
3839 struct objfile
*objfile
;
3842 struct minimal_symbol
*msymbol
;
3843 struct symbol
*sym
, *prev
;
3845 /* Avoid expensive loop through all minimal symbols if there are
3846 no unresolved symbols. */
3847 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3849 if (global_sym_chain
[hash
])
3852 if (hash
>= HASHSIZE
)
3855 for (msymbol
= objfile
-> msymbols
;
3856 msymbol
&& SYMBOL_NAME (msymbol
) != NULL
;
3861 /* Skip static symbols. */
3862 switch (MSYMBOL_TYPE (msymbol
))
3874 /* Get the hash index and check all the symbols
3875 under that hash index. */
3877 hash
= hashname (SYMBOL_NAME (msymbol
));
3879 for (sym
= global_sym_chain
[hash
]; sym
;)
3881 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3882 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3884 /* Splice this symbol out of the hash chain and
3885 assign the value we have to it. */
3888 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3892 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3895 /* Check to see whether we need to fix up a common block. */
3896 /* Note: this code might be executed several times for
3897 the same symbol if there are multiple references. */
3899 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3901 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3905 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3908 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3912 sym
= SYMBOL_VALUE_CHAIN (prev
);
3916 sym
= global_sym_chain
[hash
];
3922 sym
= SYMBOL_VALUE_CHAIN (sym
);
3927 /* Change the storage class of any remaining unresolved globals to
3928 LOC_UNRESOLVED and remove them from the chain. */
3929 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3931 sym
= global_sym_chain
[hash
];
3935 sym
= SYMBOL_VALUE_CHAIN (sym
);
3937 /* Change the symbol address from the misleading chain value
3939 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3941 /* Complain about unresolved common block symbols. */
3942 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
3943 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
3945 complain (&unresolved_sym_chain_complaint
,
3946 objfile
->name
, SYMBOL_NAME (prev
));
3949 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3952 /* Initialize anything that needs initializing when starting to read
3953 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3961 /* Initialize anything that needs initializing when a completely new
3962 symbol file is specified (not just adding some symbols from another
3963 file, e.g. a shared library). */
3966 stabsread_new_init ()
3968 /* Empty the hash table of global syms looking for values. */
3969 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3972 /* Initialize anything that needs initializing at the same time as
3973 start_symtab() is called. */
3977 global_stabs
= NULL
; /* AIX COFF */
3978 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3979 n_this_object_header_files
= 1;
3980 type_vector_length
= 0;
3981 type_vector
= (struct type
**) 0;
3983 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3984 common_block_name
= NULL
;
3989 /* Call after end_symtab() */
3995 free ((char *) type_vector
);
3998 type_vector_length
= 0;
3999 previous_stab_code
= 0;
4003 finish_global_stabs (objfile
)
4004 struct objfile
*objfile
;
4008 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4009 free ((PTR
) global_stabs
);
4010 global_stabs
= NULL
;
4014 /* Initializer for this module */
4017 _initialize_stabsread ()
4019 undef_types_allocated
= 20;
4020 undef_types_length
= 0;
4021 undef_types
= (struct type
**)
4022 xmalloc (undef_types_allocated
* sizeof (struct type
*));