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 **));
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 too large 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) \
207 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
208 *(pp) = next_symbol_text (); \
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
);
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
);
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
);
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_SOURCE_NAME (sym
));
959 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
961 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
962 add_symbol_to_list (sym
, &local_symbols
);
966 /* Register variable (either global or local). */
967 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
968 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
969 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
970 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
972 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
973 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
975 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
978 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
979 name to represent an argument passed in a register.
980 GCC uses 'P' for the same case. So if we find such a symbol pair
981 we combine it into one 'P' symbol. For Sun cc we need to do this
982 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
983 the 'p' symbol even if it never saves the argument onto the stack.
985 On most machines, we want to preserve both symbols, so that
986 we can still get information about what is going on with the
987 stack (VAX for computing args_printed, using stack slots instead
988 of saved registers in backtraces, etc.).
990 Note that this code illegally combines
991 main(argc) struct foo argc; { register struct foo argc; }
992 but this case is considered pathological and causes a warning
993 from a decent compiler. */
996 && local_symbols
->nsyms
> 0
997 #ifndef USE_REGISTER_NOT_ARG
998 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1000 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1001 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1005 struct symbol
*prev_sym
;
1006 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1007 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1008 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1009 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
1011 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1012 /* Use the type from the LOC_REGISTER; that is the type
1013 that is actually in that register. */
1014 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1015 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1020 add_symbol_to_list (sym
, &local_symbols
);
1023 add_symbol_to_list (sym
, &file_symbols
);
1027 /* Static symbol at top level of file */
1028 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1029 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1030 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1031 #ifdef STATIC_TRANSFORM_NAME
1032 if (SYMBOL_NAME (sym
)[0] == '$')
1034 struct minimal_symbol
*msym
;
1035 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1038 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1039 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1043 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1044 add_symbol_to_list (sym
, &file_symbols
);
1048 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1050 /* For a nameless type, we don't want a create a symbol, thus we
1051 did not use `sym'. Return without further processing. */
1052 if (nameless
) return NULL
;
1054 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1055 SYMBOL_VALUE (sym
) = valu
;
1056 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1057 /* C++ vagaries: we may have a type which is derived from
1058 a base type which did not have its name defined when the
1059 derived class was output. We fill in the derived class's
1060 base part member's name here in that case. */
1061 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1062 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1063 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1064 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1067 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1068 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1069 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1070 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1073 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1075 /* gcc-2.6 or later (when using -fvtable-thunks)
1076 emits a unique named type for a vtable entry.
1077 Some gdb code depends on that specific name. */
1078 extern const char vtbl_ptr_name
[];
1080 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1081 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1082 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1084 /* If we are giving a name to a type such as "pointer to
1085 foo" or "function returning foo", we better not set
1086 the TYPE_NAME. If the program contains "typedef char
1087 *caddr_t;", we don't want all variables of type char
1088 * to print as caddr_t. This is not just a
1089 consequence of GDB's type management; PCC and GCC (at
1090 least through version 2.4) both output variables of
1091 either type char * or caddr_t with the type number
1092 defined in the 't' symbol for caddr_t. If a future
1093 compiler cleans this up it GDB is not ready for it
1094 yet, but if it becomes ready we somehow need to
1095 disable this check (without breaking the PCC/GCC2.4
1100 Fortunately, this check seems not to be necessary
1101 for anything except pointers or functions. */
1104 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1107 add_symbol_to_list (sym
, &file_symbols
);
1111 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1112 by 't' which means we are typedef'ing it as well. */
1113 synonym
= *p
== 't';
1117 /* The semantics of C++ state that "struct foo { ... }" also defines
1118 a typedef for "foo". Unfortunately, cfront never makes the typedef
1119 when translating C++ into C. We make the typedef here so that
1120 "ptype foo" works as expected for cfront translated code. */
1121 else if (current_subfile
->language
== language_cplus
)
1124 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1126 /* For a nameless type, we don't want a create a symbol, thus we
1127 did not use `sym'. Return without further processing. */
1128 if (nameless
) return NULL
;
1130 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1131 SYMBOL_VALUE (sym
) = valu
;
1132 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1133 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1134 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1135 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1136 add_symbol_to_list (sym
, &file_symbols
);
1140 /* Clone the sym and then modify it. */
1141 register struct symbol
*typedef_sym
= (struct symbol
*)
1142 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1143 *typedef_sym
= *sym
;
1144 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1145 SYMBOL_VALUE (typedef_sym
) = valu
;
1146 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1147 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1148 TYPE_NAME (SYMBOL_TYPE (sym
))
1149 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1150 add_symbol_to_list (typedef_sym
, &file_symbols
);
1155 /* Static symbol of local scope */
1156 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1157 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1158 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1159 #ifdef STATIC_TRANSFORM_NAME
1160 if (SYMBOL_NAME (sym
)[0] == '$')
1162 struct minimal_symbol
*msym
;
1163 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1166 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1167 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1171 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1173 add_symbol_to_list (sym
, &global_symbols
);
1175 add_symbol_to_list (sym
, &local_symbols
);
1179 /* Reference parameter */
1180 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1181 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1182 SYMBOL_VALUE (sym
) = valu
;
1183 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1184 add_symbol_to_list (sym
, &local_symbols
);
1188 /* Reference parameter which is in a register. */
1189 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1190 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1191 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1192 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
1194 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
1195 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1197 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1198 add_symbol_to_list (sym
, &local_symbols
);
1202 /* This is used by Sun FORTRAN for "function result value".
1203 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1204 that Pascal uses it too, but when I tried it Pascal used
1205 "x:3" (local symbol) instead. */
1206 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1207 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1208 SYMBOL_VALUE (sym
) = valu
;
1209 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1210 add_symbol_to_list (sym
, &local_symbols
);
1214 SYMBOL_TYPE (sym
) = error_type (&p
);
1215 SYMBOL_CLASS (sym
) = LOC_CONST
;
1216 SYMBOL_VALUE (sym
) = 0;
1217 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1218 add_symbol_to_list (sym
, &file_symbols
);
1222 /* When passing structures to a function, some systems sometimes pass
1223 the address in a register, not the structure itself.
1225 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1226 to LOC_REGPARM_ADDR for structures and unions. */
1228 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1229 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1231 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1232 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1233 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1235 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1236 subsequent arguments on the sparc, for example). */
1237 if (SYMBOL_CLASS (sym
) == LOC_ARG
1238 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1240 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1241 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1242 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1248 /* Skip rest of this symbol and return an error type.
1250 General notes on error recovery: error_type always skips to the
1251 end of the symbol (modulo cretinous dbx symbol name continuation).
1252 Thus code like this:
1254 if (*(*pp)++ != ';')
1255 return error_type (pp);
1257 is wrong because if *pp starts out pointing at '\0' (typically as the
1258 result of an earlier error), it will be incremented to point to the
1259 start of the next symbol, which might produce strange results, at least
1260 if you run off the end of the string table. Instead use
1263 return error_type (pp);
1269 foo = error_type (pp);
1273 And in case it isn't obvious, the point of all this hair is so the compiler
1274 can define new types and new syntaxes, and old versions of the
1275 debugger will be able to read the new symbol tables. */
1277 static struct type
*
1281 complain (&error_type_complaint
);
1284 /* Skip to end of symbol. */
1285 while (**pp
!= '\0')
1290 /* Check for and handle cretinous dbx symbol name continuation! */
1291 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1293 *pp
= next_symbol_text ();
1300 return (builtin_type_error
);
1304 /* Read type information or a type definition; return the type. Even
1305 though this routine accepts either type information or a type
1306 definition, the distinction is relevant--some parts of stabsread.c
1307 assume that type information starts with a digit, '-', or '(' in
1308 deciding whether to call read_type. */
1311 read_type (pp
, objfile
)
1313 struct objfile
*objfile
;
1315 register struct type
*type
= 0;
1319 char type_descriptor
;
1321 /* Size in bits of type if specified by a type attribute, or -1 if
1322 there is no size attribute. */
1325 /* Used to distinguish string and bitstring from char-array and set. */
1328 /* Read type number if present. The type number may be omitted.
1329 for instance in a two-dimensional array declared with type
1330 "ar1;1;10;ar1;1;10;4". */
1331 if ((**pp
>= '0' && **pp
<= '9')
1335 if (read_type_number (pp
, typenums
) != 0)
1336 return error_type (pp
);
1338 /* Type is not being defined here. Either it already exists,
1339 or this is a forward reference to it. dbx_alloc_type handles
1342 return dbx_alloc_type (typenums
, objfile
);
1344 /* Type is being defined here. */
1351 /* It might be a type attribute or a member type. */
1352 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1357 /* Type attributes. */
1360 /* Skip to the semicolon. */
1361 while (*p
!= ';' && *p
!= '\0')
1365 return error_type (pp
);
1367 /* Skip the semicolon. */
1373 type_size
= atoi (attr
+ 1);
1383 /* Ignore unrecognized type attributes, so future compilers
1384 can invent new ones. */
1389 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1394 /* 'typenums=' not present, type is anonymous. Read and return
1395 the definition, but don't put it in the type vector. */
1396 typenums
[0] = typenums
[1] = -1;
1400 type_descriptor
= (*pp
)[-1];
1401 switch (type_descriptor
)
1405 enum type_code code
;
1407 /* Used to index through file_symbols. */
1408 struct pending
*ppt
;
1411 /* Name including "struct", etc. */
1415 char *from
, *to
, *p
, *q1
, *q2
;
1417 /* Set the type code according to the following letter. */
1421 code
= TYPE_CODE_STRUCT
;
1424 code
= TYPE_CODE_UNION
;
1427 code
= TYPE_CODE_ENUM
;
1431 /* Complain and keep going, so compilers can invent new
1432 cross-reference types. */
1433 static struct complaint msg
=
1434 {"Unrecognized cross-reference type `%c'", 0, 0};
1435 complain (&msg
, (*pp
)[0]);
1436 code
= TYPE_CODE_STRUCT
;
1441 q1
= strchr(*pp
, '<');
1442 p
= strchr(*pp
, ':');
1444 return error_type (pp
);
1445 while (q1
&& p
> q1
&& p
[1] == ':')
1447 q2
= strchr(q1
, '>');
1453 return error_type (pp
);
1456 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1458 /* Copy the name. */
1464 /* Set the pointer ahead of the name which we just read, and
1469 /* Now check to see whether the type has already been
1470 declared. This was written for arrays of cross-referenced
1471 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1472 sure it is not necessary anymore. But it might be a good
1473 idea, to save a little memory. */
1475 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1476 for (i
= 0; i
< ppt
->nsyms
; i
++)
1478 struct symbol
*sym
= ppt
->symbol
[i
];
1480 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1481 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1482 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1483 && STREQ (SYMBOL_NAME (sym
), type_name
))
1485 obstack_free (&objfile
-> type_obstack
, type_name
);
1486 type
= SYMBOL_TYPE (sym
);
1491 /* Didn't find the type to which this refers, so we must
1492 be dealing with a forward reference. Allocate a type
1493 structure for it, and keep track of it so we can
1494 fill in the rest of the fields when we get the full
1496 type
= dbx_alloc_type (typenums
, objfile
);
1497 TYPE_CODE (type
) = code
;
1498 TYPE_TAG_NAME (type
) = type_name
;
1499 INIT_CPLUS_SPECIFIC(type
);
1500 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1502 add_undefined_type (type
);
1506 case '-': /* RS/6000 built-in type */
1525 /* Peek ahead at the number to detect void. */
1526 if (read_type_number (pp
, xtypenums
) != 0)
1527 return error_type (pp
);
1529 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1530 /* It's being defined as itself. That means it is "void". */
1531 type
= init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
1536 /* Go back to the number and have read_type get it. This means
1537 that we can deal with something like t(1,2)=(3,4)=... which
1538 the Lucid compiler uses. */
1540 xtype
= read_type (pp
, objfile
);
1542 /* The type is being defined to another type. So we copy the type.
1543 This loses if we copy a C++ class and so we lose track of how
1544 the names are mangled (but g++ doesn't output stabs like this
1547 type
= alloc_type (objfile
);
1548 if (SYMBOL_LINE (current_symbol
) == 0)
1551 /* The idea behind clearing the names is that the only purpose
1552 for defining a type to another type is so that the name of
1553 one can be different. So we probably don't need to worry
1554 much about the case where the compiler doesn't give a name
1556 TYPE_NAME (type
) = NULL
;
1557 TYPE_TAG_NAME (type
) = NULL
;
1561 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1562 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1563 TYPE_TARGET_TYPE (type
) = xtype
;
1566 if (typenums
[0] != -1)
1567 *dbx_lookup_type (typenums
) = type
;
1571 /* In the following types, we must be sure to overwrite any existing
1572 type that the typenums refer to, rather than allocating a new one
1573 and making the typenums point to the new one. This is because there
1574 may already be pointers to the existing type (if it had been
1575 forward-referenced), and we must change it to a pointer, function,
1576 reference, or whatever, *in-place*. */
1579 type1
= read_type (pp
, objfile
);
1580 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1583 case '&': /* Reference to another type */
1584 type1
= read_type (pp
, objfile
);
1585 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1588 case 'f': /* Function returning another type */
1589 if (os9k_stabs
&& **pp
== '(')
1591 /* Function prototype; parse it.
1592 We must conditionalize this on os9k_stabs because otherwise
1593 it could be confused with a Sun-style (1,3) typenumber
1599 t
= read_type(pp
, objfile
);
1600 if (**pp
== ',') ++*pp
;
1603 type1
= read_type (pp
, objfile
);
1604 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1607 case 'k': /* Const qualifier on some type (Sun) */
1608 case 'c': /* Const qualifier on some type (OS9000) */
1609 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1610 only accept 'c' in the os9k_stabs case. */
1611 if (type_descriptor
== 'c' && !os9k_stabs
)
1612 return error_type (pp
);
1613 type
= read_type (pp
, objfile
);
1614 /* FIXME! For now, we ignore const and volatile qualifiers. */
1617 case 'B': /* Volatile qual on some type (Sun) */
1618 case 'i': /* Volatile qual on some type (OS9000) */
1619 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1620 only accept 'i' in the os9k_stabs case. */
1621 if (type_descriptor
== 'i' && !os9k_stabs
)
1622 return error_type (pp
);
1623 type
= read_type (pp
, objfile
);
1624 /* FIXME! For now, we ignore const and volatile qualifiers. */
1627 /* FIXME -- we should be doing smash_to_XXX types here. */
1628 case '@': /* Member (class & variable) type */
1630 struct type
*domain
= read_type (pp
, objfile
);
1631 struct type
*memtype
;
1634 /* Invalid member type data format. */
1635 return error_type (pp
);
1638 memtype
= read_type (pp
, objfile
);
1639 type
= dbx_alloc_type (typenums
, objfile
);
1640 smash_to_member_type (type
, domain
, memtype
);
1644 case '#': /* Method (class & fn) type */
1645 if ((*pp
)[0] == '#')
1647 /* We'll get the parameter types from the name. */
1648 struct type
*return_type
;
1651 return_type
= read_type (pp
, objfile
);
1652 if (*(*pp
)++ != ';')
1653 complain (&invalid_member_complaint
, symnum
);
1654 type
= allocate_stub_method (return_type
);
1655 if (typenums
[0] != -1)
1656 *dbx_lookup_type (typenums
) = type
;
1660 struct type
*domain
= read_type (pp
, objfile
);
1661 struct type
*return_type
;
1665 /* Invalid member type data format. */
1666 return error_type (pp
);
1670 return_type
= read_type (pp
, objfile
);
1671 args
= read_args (pp
, ';', objfile
);
1672 type
= dbx_alloc_type (typenums
, objfile
);
1673 smash_to_method_type (type
, domain
, return_type
, args
);
1677 case 'r': /* Range type */
1678 type
= read_range_type (pp
, typenums
, objfile
);
1679 if (typenums
[0] != -1)
1680 *dbx_lookup_type (typenums
) = type
;
1685 /* Const and volatile qualified type. */
1686 type
= read_type (pp
, objfile
);
1689 /* Sun ACC builtin int type */
1690 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1691 if (typenums
[0] != -1)
1692 *dbx_lookup_type (typenums
) = type
;
1696 case 'R': /* Sun ACC builtin float type */
1697 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1698 if (typenums
[0] != -1)
1699 *dbx_lookup_type (typenums
) = type
;
1702 case 'e': /* Enumeration type */
1703 type
= dbx_alloc_type (typenums
, objfile
);
1704 type
= read_enum_type (pp
, type
, objfile
);
1705 if (typenums
[0] != -1)
1706 *dbx_lookup_type (typenums
) = type
;
1709 case 's': /* Struct type */
1710 case 'u': /* Union type */
1711 type
= dbx_alloc_type (typenums
, objfile
);
1712 switch (type_descriptor
)
1715 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1718 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1721 type
= read_struct_type (pp
, type
, objfile
);
1724 case 'a': /* Array type */
1726 return error_type (pp
);
1729 type
= dbx_alloc_type (typenums
, objfile
);
1730 type
= read_array_type (pp
, type
, objfile
);
1732 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1736 type1
= read_type (pp
, objfile
);
1737 type
= create_set_type ((struct type
*) NULL
, type1
);
1739 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1740 if (typenums
[0] != -1)
1741 *dbx_lookup_type (typenums
) = type
;
1745 --*pp
; /* Go back to the symbol in error */
1746 /* Particularly important if it was \0! */
1747 return error_type (pp
);
1752 warning ("GDB internal error, type is NULL in stabsread.c\n");
1753 return error_type (pp
);
1756 /* Size specified in a type attribute overrides any other size. */
1757 if (type_size
!= -1)
1758 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1763 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1764 Return the proper type node for a given builtin type number. */
1766 static struct type
*
1767 rs6000_builtin_type (typenum
)
1770 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1771 #define NUMBER_RECOGNIZED 34
1772 /* This includes an empty slot for type number -0. */
1773 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1774 struct type
*rettype
= NULL
;
1776 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1778 complain (&rs6000_builtin_complaint
, typenum
);
1779 return builtin_type_error
;
1781 if (negative_types
[-typenum
] != NULL
)
1782 return negative_types
[-typenum
];
1784 #if TARGET_CHAR_BIT != 8
1785 #error This code wrong for TARGET_CHAR_BIT not 8
1786 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1787 that if that ever becomes not true, the correct fix will be to
1788 make the size in the struct type to be in bits, not in units of
1795 /* The size of this and all the other types are fixed, defined
1796 by the debugging format. If there is a type called "int" which
1797 is other than 32 bits, then it should use a new negative type
1798 number (or avoid negative type numbers for that case).
1799 See stabs.texinfo. */
1800 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1803 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1806 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1809 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1812 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1813 "unsigned char", NULL
);
1816 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1819 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1820 "unsigned short", NULL
);
1823 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1824 "unsigned int", NULL
);
1827 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1830 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1831 "unsigned long", NULL
);
1834 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1837 /* IEEE single precision (32 bit). */
1838 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1841 /* IEEE double precision (64 bit). */
1842 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1845 /* This is an IEEE double on the RS/6000, and different machines with
1846 different sizes for "long double" should use different negative
1847 type numbers. See stabs.texinfo. */
1848 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1851 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1854 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1857 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1860 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1863 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1866 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1870 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1874 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1878 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1882 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1886 /* Complex type consisting of two IEEE single precision values. */
1887 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1890 /* Complex type consisting of two IEEE double precision values. */
1891 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1894 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1897 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1900 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1903 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1906 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1909 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1910 "unsigned long long", NULL
);
1913 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1917 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1920 negative_types
[-typenum
] = rettype
;
1924 /* This page contains subroutines of read_type. */
1926 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1927 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1928 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1929 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1931 /* Read member function stabs info for C++ classes. The form of each member
1934 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1936 An example with two member functions is:
1938 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1940 For the case of overloaded operators, the format is op$::*.funcs, where
1941 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1942 name (such as `+=') and `.' marks the end of the operator name.
1944 Returns 1 for success, 0 for failure. */
1947 read_member_functions (fip
, pp
, type
, objfile
)
1948 struct field_info
*fip
;
1951 struct objfile
*objfile
;
1955 /* Total number of member functions defined in this class. If the class
1956 defines two `f' functions, and one `g' function, then this will have
1958 int total_length
= 0;
1962 struct next_fnfield
*next
;
1963 struct fn_field fn_field
;
1965 struct type
*look_ahead_type
;
1966 struct next_fnfieldlist
*new_fnlist
;
1967 struct next_fnfield
*new_sublist
;
1971 /* Process each list until we find something that is not a member function
1972 or find the end of the functions. */
1976 /* We should be positioned at the start of the function name.
1977 Scan forward to find the first ':' and if it is not the
1978 first of a "::" delimiter, then this is not a member function. */
1990 look_ahead_type
= NULL
;
1993 new_fnlist
= (struct next_fnfieldlist
*)
1994 xmalloc (sizeof (struct next_fnfieldlist
));
1995 make_cleanup (free
, new_fnlist
);
1996 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1998 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
2000 /* This is a completely wierd case. In order to stuff in the
2001 names that might contain colons (the usual name delimiter),
2002 Mike Tiemann defined a different name format which is
2003 signalled if the identifier is "op$". In that case, the
2004 format is "op$::XXXX." where XXXX is the name. This is
2005 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2006 /* This lets the user type "break operator+".
2007 We could just put in "+" as the name, but that wouldn't
2009 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
2010 char *o
= opname
+ 3;
2012 /* Skip past '::'. */
2015 STABS_CONTINUE (pp
);
2021 main_fn_name
= savestring (opname
, o
- opname
);
2027 main_fn_name
= savestring (*pp
, p
- *pp
);
2028 /* Skip past '::'. */
2031 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2036 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2037 make_cleanup (free
, new_sublist
);
2038 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2040 /* Check for and handle cretinous dbx symbol name continuation! */
2041 if (look_ahead_type
== NULL
)
2044 STABS_CONTINUE (pp
);
2046 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2049 /* Invalid symtab info for member function. */
2055 /* g++ version 1 kludge */
2056 new_sublist
-> fn_field
.type
= look_ahead_type
;
2057 look_ahead_type
= NULL
;
2067 /* If this is just a stub, then we don't have the real name here. */
2069 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2071 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2072 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2073 new_sublist
-> fn_field
.is_stub
= 1;
2075 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2078 /* Set this member function's visibility fields. */
2081 case VISIBILITY_PRIVATE
:
2082 new_sublist
-> fn_field
.is_private
= 1;
2084 case VISIBILITY_PROTECTED
:
2085 new_sublist
-> fn_field
.is_protected
= 1;
2089 STABS_CONTINUE (pp
);
2092 case 'A': /* Normal functions. */
2093 new_sublist
-> fn_field
.is_const
= 0;
2094 new_sublist
-> fn_field
.is_volatile
= 0;
2097 case 'B': /* `const' member functions. */
2098 new_sublist
-> fn_field
.is_const
= 1;
2099 new_sublist
-> fn_field
.is_volatile
= 0;
2102 case 'C': /* `volatile' member function. */
2103 new_sublist
-> fn_field
.is_const
= 0;
2104 new_sublist
-> fn_field
.is_volatile
= 1;
2107 case 'D': /* `const volatile' member function. */
2108 new_sublist
-> fn_field
.is_const
= 1;
2109 new_sublist
-> fn_field
.is_volatile
= 1;
2112 case '*': /* File compiled with g++ version 1 -- no info */
2117 complain (&const_vol_complaint
, **pp
);
2126 /* virtual member function, followed by index.
2127 The sign bit is set to distinguish pointers-to-methods
2128 from virtual function indicies. Since the array is
2129 in words, the quantity must be shifted left by 1
2130 on 16 bit machine, and by 2 on 32 bit machine, forcing
2131 the sign bit out, and usable as a valid index into
2132 the array. Remove the sign bit here. */
2133 new_sublist
-> fn_field
.voffset
=
2134 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2138 STABS_CONTINUE (pp
);
2139 if (**pp
== ';' || **pp
== '\0')
2141 /* Must be g++ version 1. */
2142 new_sublist
-> fn_field
.fcontext
= 0;
2146 /* Figure out from whence this virtual function came.
2147 It may belong to virtual function table of
2148 one of its baseclasses. */
2149 look_ahead_type
= read_type (pp
, objfile
);
2152 /* g++ version 1 overloaded methods. */
2156 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2165 look_ahead_type
= NULL
;
2171 /* static member function. */
2172 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2173 if (strncmp (new_sublist
-> fn_field
.physname
,
2174 main_fn_name
, strlen (main_fn_name
)))
2176 new_sublist
-> fn_field
.is_stub
= 1;
2182 complain (&member_fn_complaint
, (*pp
)[-1]);
2183 /* Fall through into normal member function. */
2186 /* normal member function. */
2187 new_sublist
-> fn_field
.voffset
= 0;
2188 new_sublist
-> fn_field
.fcontext
= 0;
2192 new_sublist
-> next
= sublist
;
2193 sublist
= new_sublist
;
2195 STABS_CONTINUE (pp
);
2197 while (**pp
!= ';' && **pp
!= '\0');
2201 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2202 obstack_alloc (&objfile
-> type_obstack
,
2203 sizeof (struct fn_field
) * length
);
2204 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2205 sizeof (struct fn_field
) * length
);
2206 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2208 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2211 new_fnlist
-> fn_fieldlist
.length
= length
;
2212 new_fnlist
-> next
= fip
-> fnlist
;
2213 fip
-> fnlist
= new_fnlist
;
2215 total_length
+= length
;
2216 STABS_CONTINUE (pp
);
2221 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2222 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2223 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2224 memset (TYPE_FN_FIELDLISTS (type
), 0,
2225 sizeof (struct fn_fieldlist
) * nfn_fields
);
2226 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2227 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2233 /* Special GNU C++ name.
2235 Returns 1 for success, 0 for failure. "failure" means that we can't
2236 keep parsing and it's time for error_type(). */
2239 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2240 struct field_info
*fip
;
2243 struct objfile
*objfile
;
2248 struct type
*context
;
2258 /* At this point, *pp points to something like "22:23=*22...",
2259 where the type number before the ':' is the "context" and
2260 everything after is a regular type definition. Lookup the
2261 type, find it's name, and construct the field name. */
2263 context
= read_type (pp
, objfile
);
2267 case 'f': /* $vf -- a virtual function table pointer */
2268 fip
->list
->field
.name
=
2269 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2272 case 'b': /* $vb -- a virtual bsomethingorother */
2273 name
= type_name_no_tag (context
);
2276 complain (&invalid_cpp_type_complaint
, symnum
);
2279 fip
->list
->field
.name
=
2280 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2284 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2285 fip
->list
->field
.name
=
2286 obconcat (&objfile
->type_obstack
,
2287 "INVALID_CPLUSPLUS_ABBREV", "", "");
2291 /* At this point, *pp points to the ':'. Skip it and read the
2297 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2300 fip
->list
->field
.type
= read_type (pp
, objfile
);
2302 (*pp
)++; /* Skip the comma. */
2308 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2312 /* This field is unpacked. */
2313 fip
->list
->field
.bitsize
= 0;
2314 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2318 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2319 /* We have no idea what syntax an unrecognized abbrev would have, so
2320 better return 0. If we returned 1, we would need to at least advance
2321 *pp to avoid an infinite loop. */
2328 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2329 struct field_info
*fip
;
2333 struct objfile
*objfile
;
2335 /* The following is code to work around cfront generated stabs.
2336 The stabs contains full mangled name for each field.
2337 We try to demangle the name and extract the field name out of it.
2339 if (ARM_DEMANGLING
&& current_subfile
->language
== language_cplus
)
2345 dem
= cplus_demangle (*pp
, DMGL_ANSI
| DMGL_PARAMS
);
2348 dem_p
= strrchr (dem
, ':');
2349 if (dem_p
!= 0 && *(dem_p
-1)==':')
2351 fip
->list
->field
.name
=
2352 obsavestring (dem_p
, strlen(dem_p
), &objfile
-> type_obstack
);
2356 fip
->list
->field
.name
=
2357 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2361 /* end of code for cfront work around */
2364 fip
-> list
-> field
.name
=
2365 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2368 /* This means we have a visibility for a field coming. */
2372 fip
-> list
-> visibility
= *(*pp
)++;
2376 /* normal dbx-style format, no explicit visibility */
2377 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2380 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2385 /* Possible future hook for nested types. */
2388 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2394 /* Static class member. */
2395 fip
-> list
-> field
.bitpos
= (long) -1;
2401 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2405 else if (**pp
!= ',')
2407 /* Bad structure-type format. */
2408 complain (&stabs_general_complaint
, "bad structure-type format");
2412 (*pp
)++; /* Skip the comma. */
2416 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2419 complain (&stabs_general_complaint
, "bad structure-type format");
2422 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2425 complain (&stabs_general_complaint
, "bad structure-type format");
2430 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2432 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2433 it is a field which has been optimized out. The correct stab for
2434 this case is to use VISIBILITY_IGNORE, but that is a recent
2435 invention. (2) It is a 0-size array. For example
2436 union { int num; char str[0]; } foo. Printing "<no value>" for
2437 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2438 will continue to work, and a 0-size array as a whole doesn't
2439 have any contents to print.
2441 I suspect this probably could also happen with gcc -gstabs (not
2442 -gstabs+) for static fields, and perhaps other C++ extensions.
2443 Hopefully few people use -gstabs with gdb, since it is intended
2444 for dbx compatibility. */
2446 /* Ignore this field. */
2447 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2451 /* Detect an unpacked field and mark it as such.
2452 dbx gives a bit size for all fields.
2453 Note that forward refs cannot be packed,
2454 and treat enums as if they had the width of ints. */
2456 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2457 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2459 fip
-> list
-> field
.bitsize
= 0;
2461 if ((fip
-> list
-> field
.bitsize
2462 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2463 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2464 && (fip
-> list
-> field
.bitsize
2469 fip
-> list
-> field
.bitpos
% 8 == 0)
2471 fip
-> list
-> field
.bitsize
= 0;
2477 /* Read struct or class data fields. They have the form:
2479 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2481 At the end, we see a semicolon instead of a field.
2483 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2486 The optional VISIBILITY is one of:
2488 '/0' (VISIBILITY_PRIVATE)
2489 '/1' (VISIBILITY_PROTECTED)
2490 '/2' (VISIBILITY_PUBLIC)
2491 '/9' (VISIBILITY_IGNORE)
2493 or nothing, for C style fields with public visibility.
2495 Returns 1 for success, 0 for failure. */
2498 read_struct_fields (fip
, pp
, type
, objfile
)
2499 struct field_info
*fip
;
2502 struct objfile
*objfile
;
2505 struct nextfield
*new;
2507 /* We better set p right now, in case there are no fields at all... */
2511 /* Read each data member type until we find the terminating ';' at the end of
2512 the data member list, or break for some other reason such as finding the
2513 start of the member function list. */
2517 if (os9k_stabs
&& **pp
== ',') break;
2518 STABS_CONTINUE (pp
);
2519 /* Get space to record the next field's data. */
2520 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2521 make_cleanup (free
, new);
2522 memset (new, 0, sizeof (struct nextfield
));
2523 new -> next
= fip
-> list
;
2526 /* Get the field name. */
2529 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2530 unless the CPLUS_MARKER is followed by an underscore, in
2531 which case it is just the name of an anonymous type, which we
2532 should handle like any other type name. We accept either '$'
2533 or '.', because a field name can never contain one of these
2534 characters except as a CPLUS_MARKER (we probably should be
2535 doing that in most parts of GDB). */
2537 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2539 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2544 /* Look for the ':' that separates the field name from the field
2545 values. Data members are delimited by a single ':', while member
2546 functions are delimited by a pair of ':'s. When we hit the member
2547 functions (if any), terminate scan loop and return. */
2549 while (*p
!= ':' && *p
!= '\0')
2556 /* Check to see if we have hit the member functions yet. */
2561 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2563 if (p
[0] == ':' && p
[1] == ':')
2565 /* chill the list of fields: the last entry (at the head) is a
2566 partially constructed entry which we now scrub. */
2567 fip
-> list
= fip
-> list
-> next
;
2572 /* The stabs for C++ derived classes contain baseclass information which
2573 is marked by a '!' character after the total size. This function is
2574 called when we encounter the baseclass marker, and slurps up all the
2575 baseclass information.
2577 Immediately following the '!' marker is the number of base classes that
2578 the class is derived from, followed by information for each base class.
2579 For each base class, there are two visibility specifiers, a bit offset
2580 to the base class information within the derived class, a reference to
2581 the type for the base class, and a terminating semicolon.
2583 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2585 Baseclass information marker __________________|| | | | | | |
2586 Number of baseclasses __________________________| | | | | | |
2587 Visibility specifiers (2) ________________________| | | | | |
2588 Offset in bits from start of class _________________| | | | |
2589 Type number for base class ___________________________| | | |
2590 Visibility specifiers (2) _______________________________| | |
2591 Offset in bits from start of class ________________________| |
2592 Type number of base class ____________________________________|
2594 Return 1 for success, 0 for (error-type-inducing) failure. */
2597 read_baseclasses (fip
, pp
, type
, objfile
)
2598 struct field_info
*fip
;
2601 struct objfile
*objfile
;
2604 struct nextfield
*new;
2612 /* Skip the '!' baseclass information marker. */
2616 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2619 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2625 /* Some stupid compilers have trouble with the following, so break
2626 it up into simpler expressions. */
2627 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2628 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2631 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2634 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2635 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2639 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2641 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2643 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2644 make_cleanup (free
, new);
2645 memset (new, 0, sizeof (struct nextfield
));
2646 new -> next
= fip
-> list
;
2648 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2650 STABS_CONTINUE (pp
);
2654 /* Nothing to do. */
2657 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2660 /* Unknown character. Complain and treat it as non-virtual. */
2662 static struct complaint msg
= {
2663 "Unknown virtual character `%c' for baseclass", 0, 0};
2664 complain (&msg
, **pp
);
2669 new -> visibility
= *(*pp
)++;
2670 switch (new -> visibility
)
2672 case VISIBILITY_PRIVATE
:
2673 case VISIBILITY_PROTECTED
:
2674 case VISIBILITY_PUBLIC
:
2677 /* Bad visibility format. Complain and treat it as
2680 static struct complaint msg
= {
2681 "Unknown visibility `%c' for baseclass", 0, 0};
2682 complain (&msg
, new -> visibility
);
2683 new -> visibility
= VISIBILITY_PUBLIC
;
2690 /* The remaining value is the bit offset of the portion of the object
2691 corresponding to this baseclass. Always zero in the absence of
2692 multiple inheritance. */
2694 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2699 /* The last piece of baseclass information is the type of the
2700 base class. Read it, and remember it's type name as this
2703 new -> field
.type
= read_type (pp
, objfile
);
2704 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2706 /* skip trailing ';' and bump count of number of fields seen */
2715 /* The tail end of stabs for C++ classes that contain a virtual function
2716 pointer contains a tilde, a %, and a type number.
2717 The type number refers to the base class (possibly this class itself) which
2718 contains the vtable pointer for the current class.
2720 This function is called when we have parsed all the method declarations,
2721 so we can look for the vptr base class info. */
2724 read_tilde_fields (fip
, pp
, type
, objfile
)
2725 struct field_info
*fip
;
2728 struct objfile
*objfile
;
2732 STABS_CONTINUE (pp
);
2734 /* If we are positioned at a ';', then skip it. */
2744 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2746 /* Obsolete flags that used to indicate the presence
2747 of constructors and/or destructors. */
2751 /* Read either a '%' or the final ';'. */
2752 if (*(*pp
)++ == '%')
2754 /* The next number is the type number of the base class
2755 (possibly our own class) which supplies the vtable for
2756 this class. Parse it out, and search that class to find
2757 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2758 and TYPE_VPTR_FIELDNO. */
2763 t
= read_type (pp
, objfile
);
2765 while (*p
!= '\0' && *p
!= ';')
2771 /* Premature end of symbol. */
2775 TYPE_VPTR_BASETYPE (type
) = t
;
2776 if (type
== t
) /* Our own class provides vtbl ptr */
2778 for (i
= TYPE_NFIELDS (t
) - 1;
2779 i
>= TYPE_N_BASECLASSES (t
);
2782 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2783 sizeof (vptr_name
) - 1))
2785 TYPE_VPTR_FIELDNO (type
) = i
;
2789 /* Virtual function table field not found. */
2790 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2795 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2806 attach_fn_fields_to_type (fip
, type
)
2807 struct field_info
*fip
;
2808 register struct type
*type
;
2812 for (n
= TYPE_NFN_FIELDS (type
);
2813 fip
-> fnlist
!= NULL
;
2814 fip
-> fnlist
= fip
-> fnlist
-> next
)
2816 --n
; /* Circumvent Sun3 compiler bug */
2817 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2822 /* Create the vector of fields, and record how big it is.
2823 We need this info to record proper virtual function table information
2824 for this class's virtual functions. */
2827 attach_fields_to_type (fip
, type
, objfile
)
2828 struct field_info
*fip
;
2829 register struct type
*type
;
2830 struct objfile
*objfile
;
2832 register int nfields
= 0;
2833 register int non_public_fields
= 0;
2834 register struct nextfield
*scan
;
2836 /* Count up the number of fields that we have, as well as taking note of
2837 whether or not there are any non-public fields, which requires us to
2838 allocate and build the private_field_bits and protected_field_bits
2841 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2844 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2846 non_public_fields
++;
2850 /* Now we know how many fields there are, and whether or not there are any
2851 non-public fields. Record the field count, allocate space for the
2852 array of fields, and create blank visibility bitfields if necessary. */
2854 TYPE_NFIELDS (type
) = nfields
;
2855 TYPE_FIELDS (type
) = (struct field
*)
2856 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2857 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2859 if (non_public_fields
)
2861 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2863 TYPE_FIELD_PRIVATE_BITS (type
) =
2864 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2865 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2867 TYPE_FIELD_PROTECTED_BITS (type
) =
2868 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2869 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2871 TYPE_FIELD_IGNORE_BITS (type
) =
2872 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2873 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2876 /* Copy the saved-up fields into the field vector. Start from the head
2877 of the list, adding to the tail of the field array, so that they end
2878 up in the same order in the array in which they were added to the list. */
2880 while (nfields
-- > 0)
2882 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2883 switch (fip
-> list
-> visibility
)
2885 case VISIBILITY_PRIVATE
:
2886 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2889 case VISIBILITY_PROTECTED
:
2890 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2893 case VISIBILITY_IGNORE
:
2894 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2897 case VISIBILITY_PUBLIC
:
2901 /* Unknown visibility. Complain and treat it as public. */
2903 static struct complaint msg
= {
2904 "Unknown visibility `%c' for field", 0, 0};
2905 complain (&msg
, fip
-> list
-> visibility
);
2909 fip
-> list
= fip
-> list
-> next
;
2914 /* Read the description of a structure (or union type) and return an object
2915 describing the type.
2917 PP points to a character pointer that points to the next unconsumed token
2918 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2919 *PP will point to "4a:1,0,32;;".
2921 TYPE points to an incomplete type that needs to be filled in.
2923 OBJFILE points to the current objfile from which the stabs information is
2924 being read. (Note that it is redundant in that TYPE also contains a pointer
2925 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2928 static struct type
*
2929 read_struct_type (pp
, type
, objfile
)
2932 struct objfile
*objfile
;
2934 struct cleanup
*back_to
;
2935 struct field_info fi
;
2940 back_to
= make_cleanup (null_cleanup
, 0);
2942 INIT_CPLUS_SPECIFIC (type
);
2943 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2945 /* First comes the total size in bytes. */
2949 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2951 return error_type (pp
);
2954 /* Now read the baseclasses, if any, read the regular C struct or C++
2955 class member fields, attach the fields to the type, read the C++
2956 member functions, attach them to the type, and then read any tilde
2957 field (baseclass specifier for the class holding the main vtable). */
2959 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2960 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2961 || !attach_fields_to_type (&fi
, type
, objfile
)
2962 || !read_member_functions (&fi
, pp
, type
, objfile
)
2963 || !attach_fn_fields_to_type (&fi
, type
)
2964 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2966 do_cleanups (back_to
);
2967 return (error_type (pp
));
2970 do_cleanups (back_to
);
2974 /* Read a definition of an array type,
2975 and create and return a suitable type object.
2976 Also creates a range type which represents the bounds of that
2979 static struct type
*
2980 read_array_type (pp
, type
, objfile
)
2982 register struct type
*type
;
2983 struct objfile
*objfile
;
2985 struct type
*index_type
, *element_type
, *range_type
;
2990 /* Format of an array type:
2991 "ar<index type>;lower;upper;<array_contents_type>".
2992 OS9000: "arlower,upper;<array_contents_type>".
2994 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2995 for these, produce a type like float[][]. */
2998 index_type
= builtin_type_int
;
3001 index_type
= read_type (pp
, objfile
);
3003 /* Improper format of array type decl. */
3004 return error_type (pp
);
3008 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3013 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
3015 return error_type (pp
);
3017 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3022 upper
= read_huge_number (pp
, ';', &nbits
);
3024 return error_type (pp
);
3026 element_type
= read_type (pp
, objfile
);
3035 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3036 type
= create_array_type (type
, element_type
, range_type
);
3042 /* Read a definition of an enumeration type,
3043 and create and return a suitable type object.
3044 Also defines the symbols that represent the values of the type. */
3046 static struct type
*
3047 read_enum_type (pp
, type
, objfile
)
3049 register struct type
*type
;
3050 struct objfile
*objfile
;
3055 register struct symbol
*sym
;
3057 struct pending
**symlist
;
3058 struct pending
*osyms
, *syms
;
3061 int unsigned_enum
= 1;
3064 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3065 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3066 to do? For now, force all enum values to file scope. */
3067 if (within_function
)
3068 symlist
= &local_symbols
;
3071 symlist
= &file_symbols
;
3073 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3077 /* Size. Perhaps this does not have to be conditionalized on
3078 os9k_stabs (assuming the name of an enum constant can't start
3080 read_huge_number (pp
, 0, &nbits
);
3082 return error_type (pp
);
3085 /* The aix4 compiler emits an extra field before the enum members;
3086 my guess is it's a type of some sort. Just ignore it. */
3089 /* Skip over the type. */
3093 /* Skip over the colon. */
3097 /* Read the value-names and their values.
3098 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3099 A semicolon or comma instead of a NAME means the end. */
3100 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3102 STABS_CONTINUE (pp
);
3104 while (*p
!= ':') p
++;
3105 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3107 n
= read_huge_number (pp
, ',', &nbits
);
3109 return error_type (pp
);
3111 sym
= (struct symbol
*)
3112 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3113 memset (sym
, 0, sizeof (struct symbol
));
3114 SYMBOL_NAME (sym
) = name
;
3115 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3116 SYMBOL_CLASS (sym
) = LOC_CONST
;
3117 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3118 SYMBOL_VALUE (sym
) = n
;
3121 add_symbol_to_list (sym
, symlist
);
3126 (*pp
)++; /* Skip the semicolon. */
3128 /* Now fill in the fields of the type-structure. */
3130 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3131 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3132 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3134 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3135 TYPE_NFIELDS (type
) = nsyms
;
3136 TYPE_FIELDS (type
) = (struct field
*)
3137 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3138 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3140 /* Find the symbols for the values and put them into the type.
3141 The symbols can be found in the symlist that we put them on
3142 to cause them to be defined. osyms contains the old value
3143 of that symlist; everything up to there was defined by us. */
3144 /* Note that we preserve the order of the enum constants, so
3145 that in something like "enum {FOO, LAST_THING=FOO}" we print
3146 FOO, not LAST_THING. */
3148 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3150 int last
= syms
== osyms
? o_nsyms
: 0;
3151 int j
= syms
->nsyms
;
3152 for (; --j
>= last
; --n
)
3154 struct symbol
*xsym
= syms
->symbol
[j
];
3155 SYMBOL_TYPE (xsym
) = type
;
3156 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3157 TYPE_FIELD_VALUE (type
, n
) = 0;
3158 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3159 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3168 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3169 typedefs in every file (for int, long, etc):
3171 type = b <signed> <width>; <offset>; <nbits>
3172 signed = u or s. Possible c in addition to u or s (for char?).
3173 offset = offset from high order bit to start bit of type.
3174 width is # bytes in object of this type, nbits is # bits in type.
3176 The width/offset stuff appears to be for small objects stored in
3177 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3180 static struct type
*
3181 read_sun_builtin_type (pp
, typenums
, objfile
)
3184 struct objfile
*objfile
;
3199 return error_type (pp
);
3203 /* For some odd reason, all forms of char put a c here. This is strange
3204 because no other type has this honor. We can safely ignore this because
3205 we actually determine 'char'acterness by the number of bits specified in
3211 /* The first number appears to be the number of bytes occupied
3212 by this type, except that unsigned short is 4 instead of 2.
3213 Since this information is redundant with the third number,
3214 we will ignore it. */
3215 read_huge_number (pp
, ';', &nbits
);
3217 return error_type (pp
);
3219 /* The second number is always 0, so ignore it too. */
3220 read_huge_number (pp
, ';', &nbits
);
3222 return error_type (pp
);
3224 /* The third number is the number of bits for this type. */
3225 type_bits
= read_huge_number (pp
, 0, &nbits
);
3227 return error_type (pp
);
3228 /* The type *should* end with a semicolon. If it are embedded
3229 in a larger type the semicolon may be the only way to know where
3230 the type ends. If this type is at the end of the stabstring we
3231 can deal with the omitted semicolon (but we don't have to like
3232 it). Don't bother to complain(), Sun's compiler omits the semicolon
3238 return init_type (TYPE_CODE_VOID
, 1,
3239 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3242 return init_type (TYPE_CODE_INT
,
3243 type_bits
/ TARGET_CHAR_BIT
,
3244 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3248 static struct type
*
3249 read_sun_floating_type (pp
, typenums
, objfile
)
3252 struct objfile
*objfile
;
3258 /* The first number has more details about the type, for example
3260 details
= read_huge_number (pp
, ';', &nbits
);
3262 return error_type (pp
);
3264 /* The second number is the number of bytes occupied by this type */
3265 nbytes
= read_huge_number (pp
, ';', &nbits
);
3267 return error_type (pp
);
3269 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3270 || details
== NF_COMPLEX32
)
3271 /* This is a type we can't handle, but we do know the size.
3272 We also will be able to give it a name. */
3273 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3275 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3278 /* Read a number from the string pointed to by *PP.
3279 The value of *PP is advanced over the number.
3280 If END is nonzero, the character that ends the
3281 number must match END, or an error happens;
3282 and that character is skipped if it does match.
3283 If END is zero, *PP is left pointing to that character.
3285 If the number fits in a long, set *BITS to 0 and return the value.
3286 If not, set *BITS to be the number of bits in the number and return 0.
3288 If encounter garbage, set *BITS to -1 and return 0. */
3291 read_huge_number (pp
, end
, bits
)
3311 /* Leading zero means octal. GCC uses this to output values larger
3312 than an int (because that would be hard in decimal). */
3320 upper_limit
= ULONG_MAX
/ radix
;
3322 upper_limit
= LONG_MAX
/ radix
;
3324 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3326 if (n
<= upper_limit
)
3329 n
+= c
- '0'; /* FIXME this overflows anyway */
3334 /* This depends on large values being output in octal, which is
3341 /* Ignore leading zeroes. */
3345 else if (c
== '2' || c
== '3')
3371 /* Large decimal constants are an error (because it is hard to
3372 count how many bits are in them). */
3378 /* -0x7f is the same as 0x80. So deal with it by adding one to
3379 the number of bits. */
3391 /* It's *BITS which has the interesting information. */
3395 static struct type
*
3396 read_range_type (pp
, typenums
, objfile
)
3399 struct objfile
*objfile
;
3401 char *orig_pp
= *pp
;
3406 struct type
*result_type
;
3407 struct type
*index_type
= NULL
;
3409 /* First comes a type we are a subrange of.
3410 In C it is usually 0, 1 or the type being defined. */
3411 if (read_type_number (pp
, rangenums
) != 0)
3412 return error_type (pp
);
3413 self_subrange
= (rangenums
[0] == typenums
[0] &&
3414 rangenums
[1] == typenums
[1]);
3419 index_type
= read_type (pp
, objfile
);
3422 /* A semicolon should now follow; skip it. */
3426 /* The remaining two operands are usually lower and upper bounds
3427 of the range. But in some special cases they mean something else. */
3428 n2
= read_huge_number (pp
, ';', &n2bits
);
3429 n3
= read_huge_number (pp
, ';', &n3bits
);
3431 if (n2bits
== -1 || n3bits
== -1)
3432 return error_type (pp
);
3435 goto handle_true_range
;
3437 /* If limits are huge, must be large integral type. */
3438 if (n2bits
!= 0 || n3bits
!= 0)
3440 char got_signed
= 0;
3441 char got_unsigned
= 0;
3442 /* Number of bits in the type. */
3445 /* Range from 0 to <large number> is an unsigned large integral type. */
3446 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3451 /* Range from <large number> to <large number>-1 is a large signed
3452 integral type. Take care of the case where <large number> doesn't
3453 fit in a long but <large number>-1 does. */
3454 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3455 || (n2bits
!= 0 && n3bits
== 0
3456 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3463 if (got_signed
|| got_unsigned
)
3465 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3466 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3470 return error_type (pp
);
3473 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3474 if (self_subrange
&& n2
== 0 && n3
== 0)
3475 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3477 /* If n3 is zero and n2 is positive, we want a floating type,
3478 and n2 is the width in bytes.
3480 Fortran programs appear to use this for complex types also,
3481 and they give no way to distinguish between double and single-complex!
3483 GDB does not have complex types.
3485 Just return the complex as a float of that size. It won't work right
3486 for the complex values, but at least it makes the file loadable. */
3488 if (n3
== 0 && n2
> 0)
3490 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3493 /* If the upper bound is -1, it must really be an unsigned int. */
3495 else if (n2
== 0 && n3
== -1)
3497 /* It is unsigned int or unsigned long. */
3498 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3499 compatibility hack. */
3500 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3501 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3504 /* Special case: char is defined (Who knows why) as a subrange of
3505 itself with range 0-127. */
3506 else if (self_subrange
&& n2
== 0 && n3
== 127)
3507 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3509 else if (current_symbol
&& SYMBOL_LANGUAGE (current_symbol
) == language_chill
3510 && SYMBOL_LINE (current_symbol
) > 0)
3511 goto handle_true_range
;
3513 /* We used to do this only for subrange of self or subrange of int. */
3517 /* n3 actually gives the size. */
3518 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3521 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3523 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3525 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3526 "unsigned long", and we already checked for that,
3527 so don't need to test for it here. */
3529 /* I think this is for Convex "long long". Since I don't know whether
3530 Convex sets self_subrange, I also accept that particular size regardless
3531 of self_subrange. */
3532 else if (n3
== 0 && n2
< 0
3534 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3535 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3536 else if (n2
== -n3
-1)
3539 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3541 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3542 if (n3
== 0x7fffffff)
3543 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3546 /* We have a real range type on our hands. Allocate space and
3547 return a real pointer. */
3550 /* At this point I don't have the faintest idea how to deal with
3551 a self_subrange type; I'm going to assume that this is used
3552 as an idiom, and that all of them are special cases. So . . . */
3554 return error_type (pp
);
3556 index_type
= *dbx_lookup_type (rangenums
);
3557 if (index_type
== NULL
)
3559 /* Does this actually ever happen? Is that why we are worrying
3560 about dealing with it rather than just calling error_type? */
3562 static struct type
*range_type_index
;
3564 complain (&range_type_base_complaint
, rangenums
[1]);
3565 if (range_type_index
== NULL
)
3567 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3568 0, "range type index type", NULL
);
3569 index_type
= range_type_index
;
3572 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3573 return (result_type
);
3576 /* Read in an argument list. This is a list of types, separated by commas
3577 and terminated with END. Return the list of types read in, or (struct type
3578 **)-1 if there is an error. */
3580 static struct type
**
3581 read_args (pp
, end
, objfile
)
3584 struct objfile
*objfile
;
3586 /* FIXME! Remove this arbitrary limit! */
3587 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3593 /* Invalid argument list: no ','. */
3594 return (struct type
**)-1;
3596 STABS_CONTINUE (pp
);
3597 types
[n
++] = read_type (pp
, objfile
);
3599 (*pp
)++; /* get past `end' (the ':' character) */
3603 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3605 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3607 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3608 memset (rval
+ n
, 0, sizeof (struct type
*));
3612 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3614 memcpy (rval
, types
, n
* sizeof (struct type
*));
3618 /* Common block handling. */
3620 /* List of symbols declared since the last BCOMM. This list is a tail
3621 of local_symbols. When ECOMM is seen, the symbols on the list
3622 are noted so their proper addresses can be filled in later,
3623 using the common block base address gotten from the assembler
3626 static struct pending
*common_block
;
3627 static int common_block_i
;
3629 /* Name of the current common block. We get it from the BCOMM instead of the
3630 ECOMM to match IBM documentation (even though IBM puts the name both places
3631 like everyone else). */
3632 static char *common_block_name
;
3634 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3635 to remain after this function returns. */
3638 common_block_start (name
, objfile
)
3640 struct objfile
*objfile
;
3642 if (common_block_name
!= NULL
)
3644 static struct complaint msg
= {
3645 "Invalid symbol data: common block within common block",
3649 common_block
= local_symbols
;
3650 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3651 common_block_name
= obsavestring (name
, strlen (name
),
3652 &objfile
-> symbol_obstack
);
3655 /* Process a N_ECOMM symbol. */
3658 common_block_end (objfile
)
3659 struct objfile
*objfile
;
3661 /* Symbols declared since the BCOMM are to have the common block
3662 start address added in when we know it. common_block and
3663 common_block_i point to the first symbol after the BCOMM in
3664 the local_symbols list; copy the list and hang it off the
3665 symbol for the common block name for later fixup. */
3668 struct pending
*new = 0;
3669 struct pending
*next
;
3672 if (common_block_name
== NULL
)
3674 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3679 sym
= (struct symbol
*)
3680 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3681 memset (sym
, 0, sizeof (struct symbol
));
3682 SYMBOL_NAME (sym
) = common_block_name
;
3683 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3685 /* Now we copy all the symbols which have been defined since the BCOMM. */
3687 /* Copy all the struct pendings before common_block. */
3688 for (next
= local_symbols
;
3689 next
!= NULL
&& next
!= common_block
;
3692 for (j
= 0; j
< next
->nsyms
; j
++)
3693 add_symbol_to_list (next
->symbol
[j
], &new);
3696 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3697 NULL, it means copy all the local symbols (which we already did
3700 if (common_block
!= NULL
)
3701 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3702 add_symbol_to_list (common_block
->symbol
[j
], &new);
3704 SYMBOL_TYPE (sym
) = (struct type
*) new;
3706 /* Should we be putting local_symbols back to what it was?
3709 i
= hashname (SYMBOL_NAME (sym
));
3710 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3711 global_sym_chain
[i
] = sym
;
3712 common_block_name
= NULL
;
3715 /* Add a common block's start address to the offset of each symbol
3716 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3717 the common block name). */
3720 fix_common_block (sym
, valu
)
3724 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3725 for ( ; next
; next
= next
->next
)
3728 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3729 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3735 /* What about types defined as forward references inside of a small lexical
3737 /* Add a type to the list of undefined types to be checked through
3738 once this file has been read in. */
3741 add_undefined_type (type
)
3744 if (undef_types_length
== undef_types_allocated
)
3746 undef_types_allocated
*= 2;
3747 undef_types
= (struct type
**)
3748 xrealloc ((char *) undef_types
,
3749 undef_types_allocated
* sizeof (struct type
*));
3751 undef_types
[undef_types_length
++] = type
;
3754 /* Go through each undefined type, see if it's still undefined, and fix it
3755 up if possible. We have two kinds of undefined types:
3757 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3758 Fix: update array length using the element bounds
3759 and the target type's length.
3760 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3761 yet defined at the time a pointer to it was made.
3762 Fix: Do a full lookup on the struct/union tag. */
3764 cleanup_undefined_types ()
3768 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3770 switch (TYPE_CODE (*type
))
3773 case TYPE_CODE_STRUCT
:
3774 case TYPE_CODE_UNION
:
3775 case TYPE_CODE_ENUM
:
3777 /* Check if it has been defined since. Need to do this here
3778 as well as in check_typedef to deal with the (legitimate in
3779 C though not C++) case of several types with the same name
3780 in different source files. */
3781 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3783 struct pending
*ppt
;
3785 /* Name of the type, without "struct" or "union" */
3786 char *typename
= TYPE_TAG_NAME (*type
);
3788 if (typename
== NULL
)
3790 static struct complaint msg
= {"need a type name", 0, 0};
3794 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3796 for (i
= 0; i
< ppt
->nsyms
; i
++)
3798 struct symbol
*sym
= ppt
->symbol
[i
];
3800 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3801 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3802 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3804 && STREQ (SYMBOL_NAME (sym
), typename
))
3806 memcpy (*type
, SYMBOL_TYPE (sym
),
3807 sizeof (struct type
));
3818 static struct complaint msg
= {"\
3819 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3820 complain (&msg
, TYPE_CODE (*type
));
3826 undef_types_length
= 0;
3829 /* Scan through all of the global symbols defined in the object file,
3830 assigning values to the debugging symbols that need to be assigned
3831 to. Get these symbols from the minimal symbol table. */
3834 scan_file_globals (objfile
)
3835 struct objfile
*objfile
;
3838 struct minimal_symbol
*msymbol
;
3839 struct symbol
*sym
, *prev
;
3841 /* Avoid expensive loop through all minimal symbols if there are
3842 no unresolved symbols. */
3843 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3845 if (global_sym_chain
[hash
])
3848 if (hash
>= HASHSIZE
)
3851 for (msymbol
= objfile
-> msymbols
;
3852 msymbol
&& SYMBOL_NAME (msymbol
) != NULL
;
3857 /* Skip static symbols. */
3858 switch (MSYMBOL_TYPE (msymbol
))
3870 /* Get the hash index and check all the symbols
3871 under that hash index. */
3873 hash
= hashname (SYMBOL_NAME (msymbol
));
3875 for (sym
= global_sym_chain
[hash
]; sym
;)
3877 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3878 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3880 /* Splice this symbol out of the hash chain and
3881 assign the value we have to it. */
3884 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3888 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3891 /* Check to see whether we need to fix up a common block. */
3892 /* Note: this code might be executed several times for
3893 the same symbol if there are multiple references. */
3895 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3897 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3901 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3904 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3908 sym
= SYMBOL_VALUE_CHAIN (prev
);
3912 sym
= global_sym_chain
[hash
];
3918 sym
= SYMBOL_VALUE_CHAIN (sym
);
3923 /* Change the storage class of any remaining unresolved globals to
3924 LOC_UNRESOLVED and remove them from the chain. */
3925 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3927 sym
= global_sym_chain
[hash
];
3931 sym
= SYMBOL_VALUE_CHAIN (sym
);
3933 /* Change the symbol address from the misleading chain value
3935 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3937 /* Complain about unresolved common block symbols. */
3938 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
3939 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
3941 complain (&unresolved_sym_chain_complaint
,
3942 objfile
->name
, SYMBOL_NAME (prev
));
3945 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3948 /* Initialize anything that needs initializing when starting to read
3949 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3957 /* Initialize anything that needs initializing when a completely new
3958 symbol file is specified (not just adding some symbols from another
3959 file, e.g. a shared library). */
3962 stabsread_new_init ()
3964 /* Empty the hash table of global syms looking for values. */
3965 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3968 /* Initialize anything that needs initializing at the same time as
3969 start_symtab() is called. */
3973 global_stabs
= NULL
; /* AIX COFF */
3974 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3975 n_this_object_header_files
= 1;
3976 type_vector_length
= 0;
3977 type_vector
= (struct type
**) 0;
3979 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3980 common_block_name
= NULL
;
3985 /* Call after end_symtab() */
3991 free ((char *) type_vector
);
3994 type_vector_length
= 0;
3995 previous_stab_code
= 0;
3999 finish_global_stabs (objfile
)
4000 struct objfile
*objfile
;
4004 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4005 free ((PTR
) global_stabs
);
4006 global_stabs
= NULL
;
4010 /* Initializer for this module */
4013 _initialize_stabsread ()
4015 undef_types_allocated
= 20;
4016 undef_types_length
= 0;
4017 undef_types
= (struct type
**)
4018 xmalloc (undef_types_allocated
* sizeof (struct type
*));