1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
28 #include "gdb_string.h"
33 #include "expression.h"
36 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
38 #include "aout/aout64.h"
39 #include "gdb-stabs.h"
41 #include "complaints.h"
47 /* Ask stabsread.h to define the vars it normally declares `extern'. */
49 #include "stabsread.h" /* Our own declarations */
52 /* The routines that read and process a complete stabs for a C struct or
53 C++ class pass lists of data member fields and lists of member function
54 fields in an instance of a field_info structure, as defined below.
55 This is part of some reorganization of low level C++ support and is
56 expected to eventually go away... (FIXME) */
62 struct nextfield
*next
;
64 /* This is the raw visibility from the stab. It is not checked
65 for being one of the visibilities we recognize, so code which
66 examines this field better be able to deal. */
71 struct next_fnfieldlist
73 struct next_fnfieldlist
*next
;
74 struct fn_fieldlist fn_fieldlist
;
79 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
81 static long read_huge_number
PARAMS ((char **, int, int *));
83 static struct type
*error_type
PARAMS ((char **, struct objfile
*));
86 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
90 fix_common_block
PARAMS ((struct symbol
*, int));
93 read_type_number
PARAMS ((char **, int *));
96 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
99 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
102 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
105 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
108 rs6000_builtin_type
PARAMS ((int));
111 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
115 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
119 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
123 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
127 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
130 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
134 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
137 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
139 static struct type
**
140 read_args
PARAMS ((char **, int, struct objfile
*));
143 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
146 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
147 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
149 /* Define this as 1 if a pcc declaration of a char or short argument
150 gives the correct address. Otherwise assume pcc gives the
151 address of the corresponding int, which is not the same on a
152 big-endian machine. */
154 #ifndef BELIEVE_PCC_PROMOTION
155 #define BELIEVE_PCC_PROMOTION 0
158 struct complaint invalid_cpp_abbrev_complaint
=
159 {"invalid C++ abbreviation `%s'", 0, 0};
161 struct complaint invalid_cpp_type_complaint
=
162 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
164 struct complaint member_fn_complaint
=
165 {"member function type missing, got '%c'", 0, 0};
167 struct complaint const_vol_complaint
=
168 {"const/volatile indicator missing, got '%c'", 0, 0};
170 struct complaint error_type_complaint
=
171 {"debug info mismatch between compiler and debugger", 0, 0};
173 struct complaint invalid_member_complaint
=
174 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
176 struct complaint range_type_base_complaint
=
177 {"base type %d of range type is not defined", 0, 0};
179 struct complaint reg_value_complaint
=
180 {"register number 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,objfile) \
207 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
208 *(pp) = next_symbol_text (objfile); \
211 /* FIXME: These probably should be our own types (like rs6000_builtin_type
212 has its own types) rather than builtin_type_*. */
213 static struct type
**os9k_type_vector
[] = {
219 &builtin_type_unsigned_char
,
220 &builtin_type_unsigned_short
,
221 &builtin_type_unsigned_long
,
222 &builtin_type_unsigned_int
,
224 &builtin_type_double
,
226 &builtin_type_long_double
229 static void os9k_init_type_vector
PARAMS ((struct type
**));
232 os9k_init_type_vector(tv
)
236 for (i
=0; i
<sizeof(os9k_type_vector
)/sizeof(struct type
**); i
++)
237 tv
[i
] = (os9k_type_vector
[i
] == 0 ? 0 : *(os9k_type_vector
[i
]));
240 /* Look up a dbx type-number pair. Return the address of the slot
241 where the type for that number-pair is stored.
242 The number-pair is in TYPENUMS.
244 This can be used for finding the type associated with that pair
245 or for associating a new type with the pair. */
248 dbx_lookup_type (typenums
)
251 register int filenum
= typenums
[0];
252 register int index
= typenums
[1];
254 register int real_filenum
;
255 register struct header_file
*f
;
258 if (filenum
== -1) /* -1,-1 is for temporary types. */
261 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
263 static struct complaint msg
= {"\
264 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
266 complain (&msg
, filenum
, index
, symnum
);
274 /* Caller wants address of address of type. We think
275 that negative (rs6k builtin) types will never appear as
276 "lvalues", (nor should they), so we stuff the real type
277 pointer into a temp, and return its address. If referenced,
278 this will do the right thing. */
279 static struct type
*temp_type
;
281 temp_type
= rs6000_builtin_type(index
);
285 /* Type is defined outside of header files.
286 Find it in this object file's type vector. */
287 if (index
>= type_vector_length
)
289 old_len
= type_vector_length
;
292 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
293 type_vector
= (struct type
**)
294 malloc (type_vector_length
* sizeof (struct type
*));
296 while (index
>= type_vector_length
)
298 type_vector_length
*= 2;
300 type_vector
= (struct type
**)
301 xrealloc ((char *) type_vector
,
302 (type_vector_length
* sizeof (struct type
*)));
303 memset (&type_vector
[old_len
], 0,
304 (type_vector_length
- old_len
) * sizeof (struct type
*));
307 /* Deal with OS9000 fundamental types. */
308 os9k_init_type_vector (type_vector
);
310 return (&type_vector
[index
]);
314 real_filenum
= this_object_header_files
[filenum
];
316 if (real_filenum
>= n_header_files
)
318 struct type
*temp_type
;
319 struct type
**temp_type_p
;
321 warning ("GDB internal error: bad real_filenum");
324 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
325 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
326 *temp_type_p
= temp_type
;
330 f
= &header_files
[real_filenum
];
332 f_orig_length
= f
->length
;
333 if (index
>= f_orig_length
)
335 while (index
>= f
->length
)
339 f
->vector
= (struct type
**)
340 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
341 memset (&f
->vector
[f_orig_length
], 0,
342 (f
->length
- f_orig_length
) * sizeof (struct type
*));
344 return (&f
->vector
[index
]);
348 /* Make sure there is a type allocated for type numbers TYPENUMS
349 and return the type object.
350 This can create an empty (zeroed) type object.
351 TYPENUMS may be (-1, -1) to return a new type object that is not
352 put into the type vector, and so may not be referred to by number. */
355 dbx_alloc_type (typenums
, objfile
)
357 struct objfile
*objfile
;
359 register struct type
**type_addr
;
361 if (typenums
[0] == -1)
363 return (alloc_type (objfile
));
366 type_addr
= dbx_lookup_type (typenums
);
368 /* If we are referring to a type not known at all yet,
369 allocate an empty type for it.
370 We will fill it in later if we find out how. */
373 *type_addr
= alloc_type (objfile
);
379 /* for all the stabs in a given stab vector, build appropriate types
380 and fix their symbols in given symbol vector. */
383 patch_block_stabs (symbols
, stabs
, objfile
)
384 struct pending
*symbols
;
385 struct pending_stabs
*stabs
;
386 struct objfile
*objfile
;
396 /* for all the stab entries, find their corresponding symbols and
397 patch their types! */
399 for (ii
= 0; ii
< stabs
->count
; ++ii
)
401 name
= stabs
->stab
[ii
];
402 pp
= (char*) strchr (name
, ':');
406 pp
= (char *)strchr(pp
, ':');
408 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
411 /* FIXME-maybe: it would be nice if we noticed whether
412 the variable was defined *anywhere*, not just whether
413 it is defined in this compilation unit. But neither
414 xlc or GCC seem to need such a definition, and until
415 we do psymtabs (so that the minimal symbols from all
416 compilation units are available now), I'm not sure
417 how to get the information. */
419 /* On xcoff, if a global is defined and never referenced,
420 ld will remove it from the executable. There is then
421 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
422 sym
= (struct symbol
*)
423 obstack_alloc (&objfile
->symbol_obstack
,
424 sizeof (struct symbol
));
426 memset (sym
, 0, sizeof (struct symbol
));
427 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
428 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
430 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
432 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
434 /* I don't think the linker does this with functions,
435 so as far as I know this is never executed.
436 But it doesn't hurt to check. */
438 lookup_function_type (read_type (&pp
, objfile
));
442 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
444 add_symbol_to_list (sym
, &global_symbols
);
449 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
452 lookup_function_type (read_type (&pp
, objfile
));
456 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
464 /* Read a number by which a type is referred to in dbx data,
465 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
466 Just a single number N is equivalent to (0,N).
467 Return the two numbers by storing them in the vector TYPENUMS.
468 TYPENUMS will then be used as an argument to dbx_lookup_type.
470 Returns 0 for success, -1 for error. */
473 read_type_number (pp
, typenums
)
475 register int *typenums
;
481 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
482 if (nbits
!= 0) return -1;
483 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
484 if (nbits
!= 0) return -1;
489 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
490 if (nbits
!= 0) return -1;
496 #if !defined (REG_STRUCT_HAS_ADDR)
497 #define REG_STRUCT_HAS_ADDR(gcc_p,type) 0
502 define_symbol (valu
, string
, desc
, type
, objfile
)
507 struct objfile
*objfile
;
509 register struct symbol
*sym
;
510 char *p
= (char *) strchr (string
, ':');
515 /* We would like to eliminate nameless symbols, but keep their types.
516 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
517 to type 2, but, should not create a symbol to address that type. Since
518 the symbol will be nameless, there is no way any user can refer to it. */
522 /* Ignore syms with empty names. */
526 /* Ignore old-style symbols from cc -go */
536 /* If a nameless stab entry, all we need is the type, not the symbol.
537 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
538 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
540 current_symbol
= sym
= (struct symbol
*)
541 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
542 memset (sym
, 0, sizeof (struct symbol
));
544 switch (type
& N_TYPE
)
547 SYMBOL_SECTION(sym
) = SECT_OFF_TEXT
;
550 SYMBOL_SECTION(sym
) = SECT_OFF_DATA
;
553 SYMBOL_SECTION(sym
) = SECT_OFF_BSS
;
557 if (processing_gcc_compilation
)
559 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
560 number of bytes occupied by a type or object, which we ignore. */
561 SYMBOL_LINE(sym
) = desc
;
565 SYMBOL_LINE(sym
) = 0; /* unknown */
568 if (string
[0] == CPLUS_MARKER
)
570 /* Special GNU C++ names. */
574 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
575 &objfile
-> symbol_obstack
);
578 case 'v': /* $vtbl_ptr_type */
579 /* Was: SYMBOL_NAME (sym) = "vptr"; */
583 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
584 &objfile
-> symbol_obstack
);
588 /* This was an anonymous type that was never fixed up. */
591 #ifdef STATIC_TRANSFORM_NAME
593 /* SunPRO (3.0 at least) static variable encoding. */
598 complain (&unrecognized_cplus_name_complaint
, string
);
599 goto normal
; /* Do *something* with it */
605 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
606 SYMBOL_NAME (sym
) = (char *)
607 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
608 /* Open-coded memcpy--saves function call time. */
609 /* FIXME: Does it really? Try replacing with simple strcpy and
610 try it on an executable with a large symbol table. */
611 /* FIXME: considering that gcc can open code memcpy anyway, I
612 doubt it. xoxorich. */
614 register char *p1
= string
;
615 register char *p2
= SYMBOL_NAME (sym
);
623 /* If this symbol is from a C++ compilation, then attempt to cache the
624 demangled form for future reference. This is a typical time versus
625 space tradeoff, that was decided in favor of time because it sped up
626 C++ symbol lookups by a factor of about 20. */
628 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
632 /* Determine the type of name being defined. */
634 /* Getting GDB to correctly skip the symbol on an undefined symbol
635 descriptor and not ever dump core is a very dodgy proposition if
636 we do things this way. I say the acorn RISC machine can just
637 fix their compiler. */
638 /* The Acorn RISC machine's compiler can put out locals that don't
639 start with "234=" or "(3,4)=", so assume anything other than the
640 deftypes we know how to handle is a local. */
641 if (!strchr ("cfFGpPrStTvVXCR", *p
))
643 if (isdigit (*p
) || *p
== '(' || *p
== '-')
652 /* c is a special case, not followed by a type-number.
653 SYMBOL:c=iVALUE for an integer constant symbol.
654 SYMBOL:c=rVALUE for a floating constant symbol.
655 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
656 e.g. "b:c=e6,0" for "const b = blob1"
657 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
660 SYMBOL_CLASS (sym
) = LOC_CONST
;
661 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
662 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
663 add_symbol_to_list (sym
, &file_symbols
);
674 /* FIXME-if-picky-about-floating-accuracy: Should be using
675 target arithmetic to get the value. real.c in GCC
676 probably has the necessary code. */
678 /* FIXME: lookup_fundamental_type is a hack. We should be
679 creating a type especially for the type of float constants.
680 Problem is, what type should it be?
682 Also, what should the name of this type be? Should we
683 be using 'S' constants (see stabs.texinfo) instead? */
685 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
688 obstack_alloc (&objfile
-> symbol_obstack
,
689 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
690 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
691 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
692 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
697 /* Defining integer constants this way is kind of silly,
698 since 'e' constants allows the compiler to give not
699 only the value, but the type as well. C has at least
700 int, long, unsigned int, and long long as constant
701 types; other languages probably should have at least
702 unsigned as well as signed constants. */
704 /* We just need one int constant type for all objfiles.
705 It doesn't depend on languages or anything (arguably its
706 name should be a language-specific name for a type of
707 that size, but I'm inclined to say that if the compiler
708 wants a nice name for the type, it can use 'e'). */
709 static struct type
*int_const_type
;
711 /* Yes, this is as long as a *host* int. That is because we
713 if (int_const_type
== NULL
)
715 init_type (TYPE_CODE_INT
,
716 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
718 (struct objfile
*)NULL
);
719 SYMBOL_TYPE (sym
) = int_const_type
;
720 SYMBOL_VALUE (sym
) = atoi (p
);
721 SYMBOL_CLASS (sym
) = LOC_CONST
;
725 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
726 can be represented as integral.
727 e.g. "b:c=e6,0" for "const b = blob1"
728 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
730 SYMBOL_CLASS (sym
) = LOC_CONST
;
731 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
735 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
740 /* If the value is too big to fit in an int (perhaps because
741 it is unsigned), or something like that, we silently get
742 a bogus value. The type and everything else about it is
743 correct. Ideally, we should be using whatever we have
744 available for parsing unsigned and long long values,
746 SYMBOL_VALUE (sym
) = atoi (p
);
751 SYMBOL_CLASS (sym
) = LOC_CONST
;
752 SYMBOL_TYPE (sym
) = error_type (&p
, objfile
);
755 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
756 add_symbol_to_list (sym
, &file_symbols
);
760 /* The name of a caught exception. */
761 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
762 SYMBOL_CLASS (sym
) = LOC_LABEL
;
763 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
764 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
765 add_symbol_to_list (sym
, &local_symbols
);
769 /* A static function definition. */
770 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
771 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
772 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
773 add_symbol_to_list (sym
, &file_symbols
);
774 /* fall into process_function_types. */
776 process_function_types
:
777 /* Function result types are described as the result type in stabs.
778 We need to convert this to the function-returning-type-X type
779 in GDB. E.g. "int" is converted to "function returning int". */
780 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
781 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
782 /* fall into process_prototype_types */
784 process_prototype_types
:
785 /* Sun acc puts declared types of arguments here. We don't care
786 about their actual types (FIXME -- we should remember the whole
787 function prototype), but the list may define some new types
788 that we have to remember, so we must scan it now. */
791 read_type (&p
, objfile
);
796 /* A global function definition. */
797 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
798 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
799 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
800 add_symbol_to_list (sym
, &global_symbols
);
801 goto process_function_types
;
804 /* For a class G (global) symbol, it appears that the
805 value is not correct. It is necessary to search for the
806 corresponding linker definition to find the value.
807 These definitions appear at the end of the namelist. */
808 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
809 i
= hashname (SYMBOL_NAME (sym
));
810 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
811 global_sym_chain
[i
] = sym
;
812 SYMBOL_CLASS (sym
) = LOC_STATIC
;
813 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
814 add_symbol_to_list (sym
, &global_symbols
);
817 /* This case is faked by a conditional above,
818 when there is no code letter in the dbx data.
819 Dbx data never actually contains 'l'. */
822 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
823 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
824 SYMBOL_VALUE (sym
) = valu
;
825 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
826 add_symbol_to_list (sym
, &local_symbols
);
831 /* pF is a two-letter code that means a function parameter in Fortran.
832 The type-number specifies the type of the return value.
833 Translate it into a pointer-to-function type. */
837 = lookup_pointer_type
838 (lookup_function_type (read_type (&p
, objfile
)));
841 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
843 /* Normally this is a parameter, a LOC_ARG. On the i960, it
844 can also be a LOC_LOCAL_ARG depending on symbol type. */
845 #ifndef DBX_PARM_SYMBOL_CLASS
846 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
849 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
850 SYMBOL_VALUE (sym
) = valu
;
851 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
852 add_symbol_to_list (sym
, &local_symbols
);
854 if (TARGET_BYTE_ORDER
!= BIG_ENDIAN
)
856 /* On little-endian machines, this crud is never necessary,
857 and, if the extra bytes contain garbage, is harmful. */
861 /* If it's gcc-compiled, if it says `short', believe it. */
862 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
865 #if !BELIEVE_PCC_PROMOTION
867 /* This is the signed type which arguments get promoted to. */
868 static struct type
*pcc_promotion_type
;
869 /* This is the unsigned type which arguments get promoted to. */
870 static struct type
*pcc_unsigned_promotion_type
;
872 /* Call it "int" because this is mainly C lossage. */
873 if (pcc_promotion_type
== NULL
)
875 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
878 if (pcc_unsigned_promotion_type
== NULL
)
879 pcc_unsigned_promotion_type
=
880 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
881 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
883 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
884 /* This macro is defined on machines (e.g. sparc) where
885 we should believe the type of a PCC 'short' argument,
886 but shouldn't believe the address (the address is
887 the address of the corresponding int).
889 My guess is that this correction, as opposed to changing
890 the parameter to an 'int' (as done below, for PCC
891 on most machines), is the right thing to do
892 on all machines, but I don't want to risk breaking
893 something that already works. On most PCC machines,
894 the sparc problem doesn't come up because the calling
895 function has to zero the top bytes (not knowing whether
896 the called function wants an int or a short), so there
897 is little practical difference between an int and a short
898 (except perhaps what happens when the GDB user types
899 "print short_arg = 0x10000;").
901 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
902 actually produces the correct address (we don't need to fix it
903 up). I made this code adapt so that it will offset the symbol
904 if it was pointing at an int-aligned location and not
905 otherwise. This way you can use the same gdb for 4.0.x and
908 If the parameter is shorter than an int, and is integral
909 (e.g. char, short, or unsigned equivalent), and is claimed to
910 be passed on an integer boundary, don't believe it! Offset the
911 parameter's address to the tail-end of that integer. */
913 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
914 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
915 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
917 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
918 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
922 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
924 /* If PCC says a parameter is a short or a char,
925 it is really an int. */
926 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
927 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
930 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
931 ? pcc_unsigned_promotion_type
932 : pcc_promotion_type
;
936 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
938 #endif /* !BELIEVE_PCC_PROMOTION. */
941 /* acc seems to use P to delare the prototypes of functions that
942 are referenced by this file. gdb is not prepared to deal
943 with this extra information. FIXME, it ought to. */
946 read_type (&p
, objfile
);
947 goto process_prototype_types
;
952 /* Parameter which is in a register. */
953 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
954 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
955 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
956 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
958 complain (®_value_complaint
, SYMBOL_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
, objfile
);
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, objfile);
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, objfile);
1269 foo = error_type (pp, objfile);
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
*
1278 error_type (pp
, objfile
)
1280 struct objfile
*objfile
;
1282 complain (&error_type_complaint
);
1285 /* Skip to end of symbol. */
1286 while (**pp
!= '\0')
1291 /* Check for and handle cretinous dbx symbol name continuation! */
1292 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1294 *pp
= next_symbol_text (objfile
);
1301 return (builtin_type_error
);
1305 /* Read type information or a type definition; return the type. Even
1306 though this routine accepts either type information or a type
1307 definition, the distinction is relevant--some parts of stabsread.c
1308 assume that type information starts with a digit, '-', or '(' in
1309 deciding whether to call read_type. */
1312 read_type (pp
, objfile
)
1314 struct objfile
*objfile
;
1316 register struct type
*type
= 0;
1320 char type_descriptor
;
1322 /* Size in bits of type if specified by a type attribute, or -1 if
1323 there is no size attribute. */
1326 /* Used to distinguish string and bitstring from char-array and set. */
1329 /* Read type number if present. The type number may be omitted.
1330 for instance in a two-dimensional array declared with type
1331 "ar1;1;10;ar1;1;10;4". */
1332 if ((**pp
>= '0' && **pp
<= '9')
1336 if (read_type_number (pp
, typenums
) != 0)
1337 return error_type (pp
, objfile
);
1339 /* Type is not being defined here. Either it already exists,
1340 or this is a forward reference to it. dbx_alloc_type handles
1343 return dbx_alloc_type (typenums
, objfile
);
1345 /* Type is being defined here. */
1352 /* It might be a type attribute or a member type. */
1353 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1358 /* Type attributes. */
1361 /* Skip to the semicolon. */
1362 while (*p
!= ';' && *p
!= '\0')
1366 return error_type (pp
, objfile
);
1368 /* Skip the semicolon. */
1374 type_size
= atoi (attr
+ 1);
1384 /* Ignore unrecognized type attributes, so future compilers
1385 can invent new ones. */
1390 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1395 /* 'typenums=' not present, type is anonymous. Read and return
1396 the definition, but don't put it in the type vector. */
1397 typenums
[0] = typenums
[1] = -1;
1401 type_descriptor
= (*pp
)[-1];
1402 switch (type_descriptor
)
1406 enum type_code code
;
1408 /* Used to index through file_symbols. */
1409 struct pending
*ppt
;
1412 /* Name including "struct", etc. */
1416 char *from
, *to
, *p
, *q1
, *q2
;
1418 /* Set the type code according to the following letter. */
1422 code
= TYPE_CODE_STRUCT
;
1425 code
= TYPE_CODE_UNION
;
1428 code
= TYPE_CODE_ENUM
;
1432 /* Complain and keep going, so compilers can invent new
1433 cross-reference types. */
1434 static struct complaint msg
=
1435 {"Unrecognized cross-reference type `%c'", 0, 0};
1436 complain (&msg
, (*pp
)[0]);
1437 code
= TYPE_CODE_STRUCT
;
1442 q1
= strchr(*pp
, '<');
1443 p
= strchr(*pp
, ':');
1445 return error_type (pp
, objfile
);
1446 while (q1
&& p
> q1
&& p
[1] == ':')
1448 q2
= strchr(q1
, '>');
1454 return error_type (pp
, objfile
);
1457 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1459 /* Copy the name. */
1465 /* Set the pointer ahead of the name which we just read, and
1470 /* Now check to see whether the type has already been
1471 declared. This was written for arrays of cross-referenced
1472 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1473 sure it is not necessary anymore. But it might be a good
1474 idea, to save a little memory. */
1476 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1477 for (i
= 0; i
< ppt
->nsyms
; i
++)
1479 struct symbol
*sym
= ppt
->symbol
[i
];
1481 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1482 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1483 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1484 && STREQ (SYMBOL_NAME (sym
), type_name
))
1486 obstack_free (&objfile
-> type_obstack
, type_name
);
1487 type
= SYMBOL_TYPE (sym
);
1492 /* Didn't find the type to which this refers, so we must
1493 be dealing with a forward reference. Allocate a type
1494 structure for it, and keep track of it so we can
1495 fill in the rest of the fields when we get the full
1497 type
= dbx_alloc_type (typenums
, objfile
);
1498 TYPE_CODE (type
) = code
;
1499 TYPE_TAG_NAME (type
) = type_name
;
1500 INIT_CPLUS_SPECIFIC(type
);
1501 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1503 add_undefined_type (type
);
1507 case '-': /* RS/6000 built-in type */
1526 /* Peek ahead at the number to detect void. */
1527 if (read_type_number (pp
, xtypenums
) != 0)
1528 return error_type (pp
, objfile
);
1530 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1531 /* It's being defined as itself. That means it is "void". */
1532 type
= init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
1537 /* Go back to the number and have read_type get it. This means
1538 that we can deal with something like t(1,2)=(3,4)=... which
1539 the Lucid compiler uses. */
1541 xtype
= read_type (pp
, objfile
);
1543 /* The type is being defined to another type. So we copy the type.
1544 This loses if we copy a C++ class and so we lose track of how
1545 the names are mangled (but g++ doesn't output stabs like this
1548 type
= alloc_type (objfile
);
1549 if (SYMBOL_LINE (current_symbol
) == 0)
1552 /* The idea behind clearing the names is that the only purpose
1553 for defining a type to another type is so that the name of
1554 one can be different. So we probably don't need to worry
1555 much about the case where the compiler doesn't give a name
1557 TYPE_NAME (type
) = NULL
;
1558 TYPE_TAG_NAME (type
) = NULL
;
1562 TYPE_CODE (type
) = TYPE_CODE_TYPEDEF
;
1563 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
1564 TYPE_TARGET_TYPE (type
) = xtype
;
1567 if (typenums
[0] != -1)
1568 *dbx_lookup_type (typenums
) = type
;
1572 /* In the following types, we must be sure to overwrite any existing
1573 type that the typenums refer to, rather than allocating a new one
1574 and making the typenums point to the new one. This is because there
1575 may already be pointers to the existing type (if it had been
1576 forward-referenced), and we must change it to a pointer, function,
1577 reference, or whatever, *in-place*. */
1580 type1
= read_type (pp
, objfile
);
1581 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1584 case '&': /* Reference to another type */
1585 type1
= read_type (pp
, objfile
);
1586 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1589 case 'f': /* Function returning another type */
1590 if (os9k_stabs
&& **pp
== '(')
1592 /* Function prototype; parse it.
1593 We must conditionalize this on os9k_stabs because otherwise
1594 it could be confused with a Sun-style (1,3) typenumber
1600 t
= read_type(pp
, objfile
);
1601 if (**pp
== ',') ++*pp
;
1604 type1
= read_type (pp
, objfile
);
1605 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1608 case 'k': /* Const qualifier on some type (Sun) */
1609 case 'c': /* Const qualifier on some type (OS9000) */
1610 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1611 only accept 'c' in the os9k_stabs case. */
1612 if (type_descriptor
== 'c' && !os9k_stabs
)
1613 return error_type (pp
, objfile
);
1614 type
= read_type (pp
, objfile
);
1615 /* FIXME! For now, we ignore const and volatile qualifiers. */
1618 case 'B': /* Volatile qual on some type (Sun) */
1619 case 'i': /* Volatile qual on some type (OS9000) */
1620 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1621 only accept 'i' in the os9k_stabs case. */
1622 if (type_descriptor
== 'i' && !os9k_stabs
)
1623 return error_type (pp
, objfile
);
1624 type
= read_type (pp
, objfile
);
1625 /* FIXME! For now, we ignore const and volatile qualifiers. */
1628 /* FIXME -- we should be doing smash_to_XXX types here. */
1629 case '@': /* Member (class & variable) type */
1631 struct type
*domain
= read_type (pp
, objfile
);
1632 struct type
*memtype
;
1635 /* Invalid member type data format. */
1636 return error_type (pp
, objfile
);
1639 memtype
= read_type (pp
, objfile
);
1640 type
= dbx_alloc_type (typenums
, objfile
);
1641 smash_to_member_type (type
, domain
, memtype
);
1645 case '#': /* Method (class & fn) type */
1646 if ((*pp
)[0] == '#')
1648 /* We'll get the parameter types from the name. */
1649 struct type
*return_type
;
1652 return_type
= read_type (pp
, objfile
);
1653 if (*(*pp
)++ != ';')
1654 complain (&invalid_member_complaint
, symnum
);
1655 type
= allocate_stub_method (return_type
);
1656 if (typenums
[0] != -1)
1657 *dbx_lookup_type (typenums
) = type
;
1661 struct type
*domain
= read_type (pp
, objfile
);
1662 struct type
*return_type
;
1666 /* Invalid member type data format. */
1667 return error_type (pp
, objfile
);
1671 return_type
= read_type (pp
, objfile
);
1672 args
= read_args (pp
, ';', objfile
);
1673 type
= dbx_alloc_type (typenums
, objfile
);
1674 smash_to_method_type (type
, domain
, return_type
, args
);
1678 case 'r': /* Range type */
1679 type
= read_range_type (pp
, typenums
, objfile
);
1680 if (typenums
[0] != -1)
1681 *dbx_lookup_type (typenums
) = type
;
1686 /* Const and volatile qualified type. */
1687 type
= read_type (pp
, objfile
);
1690 /* Sun ACC builtin int type */
1691 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1692 if (typenums
[0] != -1)
1693 *dbx_lookup_type (typenums
) = type
;
1697 case 'R': /* Sun ACC builtin float type */
1698 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1699 if (typenums
[0] != -1)
1700 *dbx_lookup_type (typenums
) = type
;
1703 case 'e': /* Enumeration type */
1704 type
= dbx_alloc_type (typenums
, objfile
);
1705 type
= read_enum_type (pp
, type
, objfile
);
1706 if (typenums
[0] != -1)
1707 *dbx_lookup_type (typenums
) = type
;
1710 case 's': /* Struct type */
1711 case 'u': /* Union type */
1712 type
= dbx_alloc_type (typenums
, objfile
);
1713 switch (type_descriptor
)
1716 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1719 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1722 type
= read_struct_type (pp
, type
, objfile
);
1725 case 'a': /* Array type */
1727 return error_type (pp
, objfile
);
1730 type
= dbx_alloc_type (typenums
, objfile
);
1731 type
= read_array_type (pp
, type
, objfile
);
1733 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1737 type1
= read_type (pp
, objfile
);
1738 type
= create_set_type ((struct type
*) NULL
, type1
);
1740 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1741 if (typenums
[0] != -1)
1742 *dbx_lookup_type (typenums
) = type
;
1746 --*pp
; /* Go back to the symbol in error */
1747 /* Particularly important if it was \0! */
1748 return error_type (pp
, objfile
);
1753 warning ("GDB internal error, type is NULL in stabsread.c\n");
1754 return error_type (pp
, objfile
);
1757 /* Size specified in a type attribute overrides any other size. */
1758 if (type_size
!= -1)
1759 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1764 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1765 Return the proper type node for a given builtin type number. */
1767 static struct type
*
1768 rs6000_builtin_type (typenum
)
1771 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1772 #define NUMBER_RECOGNIZED 34
1773 /* This includes an empty slot for type number -0. */
1774 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1775 struct type
*rettype
= NULL
;
1777 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1779 complain (&rs6000_builtin_complaint
, typenum
);
1780 return builtin_type_error
;
1782 if (negative_types
[-typenum
] != NULL
)
1783 return negative_types
[-typenum
];
1785 #if TARGET_CHAR_BIT != 8
1786 #error This code wrong for TARGET_CHAR_BIT not 8
1787 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1788 that if that ever becomes not true, the correct fix will be to
1789 make the size in the struct type to be in bits, not in units of
1796 /* The size of this and all the other types are fixed, defined
1797 by the debugging format. If there is a type called "int" which
1798 is other than 32 bits, then it should use a new negative type
1799 number (or avoid negative type numbers for that case).
1800 See stabs.texinfo. */
1801 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1804 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1807 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1810 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1813 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1814 "unsigned char", NULL
);
1817 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1820 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1821 "unsigned short", NULL
);
1824 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1825 "unsigned int", NULL
);
1828 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1831 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1832 "unsigned long", NULL
);
1835 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1838 /* IEEE single precision (32 bit). */
1839 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1842 /* IEEE double precision (64 bit). */
1843 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1846 /* This is an IEEE double on the RS/6000, and different machines with
1847 different sizes for "long double" should use different negative
1848 type numbers. See stabs.texinfo. */
1849 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1852 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1855 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1858 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1861 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1864 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1867 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1871 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1875 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1879 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1883 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1887 /* Complex type consisting of two IEEE single precision values. */
1888 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1891 /* Complex type consisting of two IEEE double precision values. */
1892 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1895 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1898 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1901 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1904 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1907 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1910 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1911 "unsigned long long", NULL
);
1914 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1918 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1921 negative_types
[-typenum
] = rettype
;
1925 /* This page contains subroutines of read_type. */
1927 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1928 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1929 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1930 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1932 /* Read member function stabs info for C++ classes. The form of each member
1935 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1937 An example with two member functions is:
1939 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1941 For the case of overloaded operators, the format is op$::*.funcs, where
1942 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1943 name (such as `+=') and `.' marks the end of the operator name.
1945 Returns 1 for success, 0 for failure. */
1948 read_member_functions (fip
, pp
, type
, objfile
)
1949 struct field_info
*fip
;
1952 struct objfile
*objfile
;
1956 /* Total number of member functions defined in this class. If the class
1957 defines two `f' functions, and one `g' function, then this will have
1959 int total_length
= 0;
1963 struct next_fnfield
*next
;
1964 struct fn_field fn_field
;
1966 struct type
*look_ahead_type
;
1967 struct next_fnfieldlist
*new_fnlist
;
1968 struct next_fnfield
*new_sublist
;
1972 /* Process each list until we find something that is not a member function
1973 or find the end of the functions. */
1977 /* We should be positioned at the start of the function name.
1978 Scan forward to find the first ':' and if it is not the
1979 first of a "::" delimiter, then this is not a member function. */
1991 look_ahead_type
= NULL
;
1994 new_fnlist
= (struct next_fnfieldlist
*)
1995 xmalloc (sizeof (struct next_fnfieldlist
));
1996 make_cleanup (free
, new_fnlist
);
1997 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1999 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
2001 /* This is a completely wierd case. In order to stuff in the
2002 names that might contain colons (the usual name delimiter),
2003 Mike Tiemann defined a different name format which is
2004 signalled if the identifier is "op$". In that case, the
2005 format is "op$::XXXX." where XXXX is the name. This is
2006 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2007 /* This lets the user type "break operator+".
2008 We could just put in "+" as the name, but that wouldn't
2010 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
2011 char *o
= opname
+ 3;
2013 /* Skip past '::'. */
2016 STABS_CONTINUE (pp
, objfile
);
2022 main_fn_name
= savestring (opname
, o
- opname
);
2028 main_fn_name
= savestring (*pp
, p
- *pp
);
2029 /* Skip past '::'. */
2032 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2037 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2038 make_cleanup (free
, new_sublist
);
2039 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2041 /* Check for and handle cretinous dbx symbol name continuation! */
2042 if (look_ahead_type
== NULL
)
2045 STABS_CONTINUE (pp
, objfile
);
2047 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2050 /* Invalid symtab info for member function. */
2056 /* g++ version 1 kludge */
2057 new_sublist
-> fn_field
.type
= look_ahead_type
;
2058 look_ahead_type
= NULL
;
2068 /* If this is just a stub, then we don't have the real name here. */
2070 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2072 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2073 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2074 new_sublist
-> fn_field
.is_stub
= 1;
2076 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2079 /* Set this member function's visibility fields. */
2082 case VISIBILITY_PRIVATE
:
2083 new_sublist
-> fn_field
.is_private
= 1;
2085 case VISIBILITY_PROTECTED
:
2086 new_sublist
-> fn_field
.is_protected
= 1;
2090 STABS_CONTINUE (pp
, objfile
);
2093 case 'A': /* Normal functions. */
2094 new_sublist
-> fn_field
.is_const
= 0;
2095 new_sublist
-> fn_field
.is_volatile
= 0;
2098 case 'B': /* `const' member functions. */
2099 new_sublist
-> fn_field
.is_const
= 1;
2100 new_sublist
-> fn_field
.is_volatile
= 0;
2103 case 'C': /* `volatile' member function. */
2104 new_sublist
-> fn_field
.is_const
= 0;
2105 new_sublist
-> fn_field
.is_volatile
= 1;
2108 case 'D': /* `const volatile' member function. */
2109 new_sublist
-> fn_field
.is_const
= 1;
2110 new_sublist
-> fn_field
.is_volatile
= 1;
2113 case '*': /* File compiled with g++ version 1 -- no info */
2118 complain (&const_vol_complaint
, **pp
);
2127 /* virtual member function, followed by index.
2128 The sign bit is set to distinguish pointers-to-methods
2129 from virtual function indicies. Since the array is
2130 in words, the quantity must be shifted left by 1
2131 on 16 bit machine, and by 2 on 32 bit machine, forcing
2132 the sign bit out, and usable as a valid index into
2133 the array. Remove the sign bit here. */
2134 new_sublist
-> fn_field
.voffset
=
2135 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2139 STABS_CONTINUE (pp
, objfile
);
2140 if (**pp
== ';' || **pp
== '\0')
2142 /* Must be g++ version 1. */
2143 new_sublist
-> fn_field
.fcontext
= 0;
2147 /* Figure out from whence this virtual function came.
2148 It may belong to virtual function table of
2149 one of its baseclasses. */
2150 look_ahead_type
= read_type (pp
, objfile
);
2153 /* g++ version 1 overloaded methods. */
2157 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2166 look_ahead_type
= NULL
;
2172 /* static member function. */
2173 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2174 if (strncmp (new_sublist
-> fn_field
.physname
,
2175 main_fn_name
, strlen (main_fn_name
)))
2177 new_sublist
-> fn_field
.is_stub
= 1;
2183 complain (&member_fn_complaint
, (*pp
)[-1]);
2184 /* Fall through into normal member function. */
2187 /* normal member function. */
2188 new_sublist
-> fn_field
.voffset
= 0;
2189 new_sublist
-> fn_field
.fcontext
= 0;
2193 new_sublist
-> next
= sublist
;
2194 sublist
= new_sublist
;
2196 STABS_CONTINUE (pp
, objfile
);
2198 while (**pp
!= ';' && **pp
!= '\0');
2202 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2203 obstack_alloc (&objfile
-> type_obstack
,
2204 sizeof (struct fn_field
) * length
);
2205 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2206 sizeof (struct fn_field
) * length
);
2207 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2209 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2212 new_fnlist
-> fn_fieldlist
.length
= length
;
2213 new_fnlist
-> next
= fip
-> fnlist
;
2214 fip
-> fnlist
= new_fnlist
;
2216 total_length
+= length
;
2217 STABS_CONTINUE (pp
, objfile
);
2222 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2223 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2224 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2225 memset (TYPE_FN_FIELDLISTS (type
), 0,
2226 sizeof (struct fn_fieldlist
) * nfn_fields
);
2227 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2228 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2234 /* Special GNU C++ name.
2236 Returns 1 for success, 0 for failure. "failure" means that we can't
2237 keep parsing and it's time for error_type(). */
2240 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2241 struct field_info
*fip
;
2244 struct objfile
*objfile
;
2249 struct type
*context
;
2259 /* At this point, *pp points to something like "22:23=*22...",
2260 where the type number before the ':' is the "context" and
2261 everything after is a regular type definition. Lookup the
2262 type, find it's name, and construct the field name. */
2264 context
= read_type (pp
, objfile
);
2268 case 'f': /* $vf -- a virtual function table pointer */
2269 fip
->list
->field
.name
=
2270 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2273 case 'b': /* $vb -- a virtual bsomethingorother */
2274 name
= type_name_no_tag (context
);
2277 complain (&invalid_cpp_type_complaint
, symnum
);
2280 fip
->list
->field
.name
=
2281 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2285 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2286 fip
->list
->field
.name
=
2287 obconcat (&objfile
->type_obstack
,
2288 "INVALID_CPLUSPLUS_ABBREV", "", "");
2292 /* At this point, *pp points to the ':'. Skip it and read the
2298 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2301 fip
->list
->field
.type
= read_type (pp
, objfile
);
2303 (*pp
)++; /* Skip the comma. */
2309 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2313 /* This field is unpacked. */
2314 fip
->list
->field
.bitsize
= 0;
2315 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2319 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2320 /* We have no idea what syntax an unrecognized abbrev would have, so
2321 better return 0. If we returned 1, we would need to at least advance
2322 *pp to avoid an infinite loop. */
2329 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2330 struct field_info
*fip
;
2334 struct objfile
*objfile
;
2336 /* The following is code to work around cfront generated stabs.
2337 The stabs contains full mangled name for each field.
2338 We try to demangle the name and extract the field name out of it.
2340 if (ARM_DEMANGLING
&& current_subfile
->language
== language_cplus
)
2346 dem
= cplus_demangle (*pp
, DMGL_ANSI
| DMGL_PARAMS
);
2349 dem_p
= strrchr (dem
, ':');
2350 if (dem_p
!= 0 && *(dem_p
-1)==':')
2352 fip
->list
->field
.name
=
2353 obsavestring (dem_p
, strlen(dem_p
), &objfile
-> type_obstack
);
2357 fip
->list
->field
.name
=
2358 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2362 /* end of code for cfront work around */
2365 fip
-> list
-> field
.name
=
2366 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2369 /* This means we have a visibility for a field coming. */
2373 fip
-> list
-> visibility
= *(*pp
)++;
2377 /* normal dbx-style format, no explicit visibility */
2378 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2381 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2386 /* Possible future hook for nested types. */
2389 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2395 /* Static class member. */
2396 fip
-> list
-> field
.bitpos
= (long) -1;
2402 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2406 else if (**pp
!= ',')
2408 /* Bad structure-type format. */
2409 complain (&stabs_general_complaint
, "bad structure-type format");
2413 (*pp
)++; /* Skip the comma. */
2417 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2420 complain (&stabs_general_complaint
, "bad structure-type format");
2423 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2426 complain (&stabs_general_complaint
, "bad structure-type format");
2431 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2433 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2434 it is a field which has been optimized out. The correct stab for
2435 this case is to use VISIBILITY_IGNORE, but that is a recent
2436 invention. (2) It is a 0-size array. For example
2437 union { int num; char str[0]; } foo. Printing "<no value>" for
2438 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2439 will continue to work, and a 0-size array as a whole doesn't
2440 have any contents to print.
2442 I suspect this probably could also happen with gcc -gstabs (not
2443 -gstabs+) for static fields, and perhaps other C++ extensions.
2444 Hopefully few people use -gstabs with gdb, since it is intended
2445 for dbx compatibility. */
2447 /* Ignore this field. */
2448 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2452 /* Detect an unpacked field and mark it as such.
2453 dbx gives a bit size for all fields.
2454 Note that forward refs cannot be packed,
2455 and treat enums as if they had the width of ints. */
2457 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2458 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2460 fip
-> list
-> field
.bitsize
= 0;
2462 if ((fip
-> list
-> field
.bitsize
2463 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2464 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2465 && (fip
-> list
-> field
.bitsize
2470 fip
-> list
-> field
.bitpos
% 8 == 0)
2472 fip
-> list
-> field
.bitsize
= 0;
2478 /* Read struct or class data fields. They have the form:
2480 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2482 At the end, we see a semicolon instead of a field.
2484 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2487 The optional VISIBILITY is one of:
2489 '/0' (VISIBILITY_PRIVATE)
2490 '/1' (VISIBILITY_PROTECTED)
2491 '/2' (VISIBILITY_PUBLIC)
2492 '/9' (VISIBILITY_IGNORE)
2494 or nothing, for C style fields with public visibility.
2496 Returns 1 for success, 0 for failure. */
2499 read_struct_fields (fip
, pp
, type
, objfile
)
2500 struct field_info
*fip
;
2503 struct objfile
*objfile
;
2506 struct nextfield
*new;
2508 /* We better set p right now, in case there are no fields at all... */
2512 /* Read each data member type until we find the terminating ';' at the end of
2513 the data member list, or break for some other reason such as finding the
2514 start of the member function list. */
2518 if (os9k_stabs
&& **pp
== ',') break;
2519 STABS_CONTINUE (pp
, objfile
);
2520 /* Get space to record the next field's data. */
2521 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2522 make_cleanup (free
, new);
2523 memset (new, 0, sizeof (struct nextfield
));
2524 new -> next
= fip
-> list
;
2527 /* Get the field name. */
2530 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2531 unless the CPLUS_MARKER is followed by an underscore, in
2532 which case it is just the name of an anonymous type, which we
2533 should handle like any other type name. We accept either '$'
2534 or '.', because a field name can never contain one of these
2535 characters except as a CPLUS_MARKER (we probably should be
2536 doing that in most parts of GDB). */
2538 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2540 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2545 /* Look for the ':' that separates the field name from the field
2546 values. Data members are delimited by a single ':', while member
2547 functions are delimited by a pair of ':'s. When we hit the member
2548 functions (if any), terminate scan loop and return. */
2550 while (*p
!= ':' && *p
!= '\0')
2557 /* Check to see if we have hit the member functions yet. */
2562 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2564 if (p
[0] == ':' && p
[1] == ':')
2566 /* chill the list of fields: the last entry (at the head) is a
2567 partially constructed entry which we now scrub. */
2568 fip
-> list
= fip
-> list
-> next
;
2573 /* The stabs for C++ derived classes contain baseclass information which
2574 is marked by a '!' character after the total size. This function is
2575 called when we encounter the baseclass marker, and slurps up all the
2576 baseclass information.
2578 Immediately following the '!' marker is the number of base classes that
2579 the class is derived from, followed by information for each base class.
2580 For each base class, there are two visibility specifiers, a bit offset
2581 to the base class information within the derived class, a reference to
2582 the type for the base class, and a terminating semicolon.
2584 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2586 Baseclass information marker __________________|| | | | | | |
2587 Number of baseclasses __________________________| | | | | | |
2588 Visibility specifiers (2) ________________________| | | | | |
2589 Offset in bits from start of class _________________| | | | |
2590 Type number for base class ___________________________| | | |
2591 Visibility specifiers (2) _______________________________| | |
2592 Offset in bits from start of class ________________________| |
2593 Type number of base class ____________________________________|
2595 Return 1 for success, 0 for (error-type-inducing) failure. */
2598 read_baseclasses (fip
, pp
, type
, objfile
)
2599 struct field_info
*fip
;
2602 struct objfile
*objfile
;
2605 struct nextfield
*new;
2613 /* Skip the '!' baseclass information marker. */
2617 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2620 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2626 /* Some stupid compilers have trouble with the following, so break
2627 it up into simpler expressions. */
2628 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2629 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2632 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2635 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2636 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2640 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2642 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2644 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2645 make_cleanup (free
, new);
2646 memset (new, 0, sizeof (struct nextfield
));
2647 new -> next
= fip
-> list
;
2649 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2651 STABS_CONTINUE (pp
, objfile
);
2655 /* Nothing to do. */
2658 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2661 /* Unknown character. Complain and treat it as non-virtual. */
2663 static struct complaint msg
= {
2664 "Unknown virtual character `%c' for baseclass", 0, 0};
2665 complain (&msg
, **pp
);
2670 new -> visibility
= *(*pp
)++;
2671 switch (new -> visibility
)
2673 case VISIBILITY_PRIVATE
:
2674 case VISIBILITY_PROTECTED
:
2675 case VISIBILITY_PUBLIC
:
2678 /* Bad visibility format. Complain and treat it as
2681 static struct complaint msg
= {
2682 "Unknown visibility `%c' for baseclass", 0, 0};
2683 complain (&msg
, new -> visibility
);
2684 new -> visibility
= VISIBILITY_PUBLIC
;
2691 /* The remaining value is the bit offset of the portion of the object
2692 corresponding to this baseclass. Always zero in the absence of
2693 multiple inheritance. */
2695 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2700 /* The last piece of baseclass information is the type of the
2701 base class. Read it, and remember it's type name as this
2704 new -> field
.type
= read_type (pp
, objfile
);
2705 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2707 /* skip trailing ';' and bump count of number of fields seen */
2716 /* The tail end of stabs for C++ classes that contain a virtual function
2717 pointer contains a tilde, a %, and a type number.
2718 The type number refers to the base class (possibly this class itself) which
2719 contains the vtable pointer for the current class.
2721 This function is called when we have parsed all the method declarations,
2722 so we can look for the vptr base class info. */
2725 read_tilde_fields (fip
, pp
, type
, objfile
)
2726 struct field_info
*fip
;
2729 struct objfile
*objfile
;
2733 STABS_CONTINUE (pp
, objfile
);
2735 /* If we are positioned at a ';', then skip it. */
2745 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2747 /* Obsolete flags that used to indicate the presence
2748 of constructors and/or destructors. */
2752 /* Read either a '%' or the final ';'. */
2753 if (*(*pp
)++ == '%')
2755 /* The next number is the type number of the base class
2756 (possibly our own class) which supplies the vtable for
2757 this class. Parse it out, and search that class to find
2758 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2759 and TYPE_VPTR_FIELDNO. */
2764 t
= read_type (pp
, objfile
);
2766 while (*p
!= '\0' && *p
!= ';')
2772 /* Premature end of symbol. */
2776 TYPE_VPTR_BASETYPE (type
) = t
;
2777 if (type
== t
) /* Our own class provides vtbl ptr */
2779 for (i
= TYPE_NFIELDS (t
) - 1;
2780 i
>= TYPE_N_BASECLASSES (t
);
2783 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2784 sizeof (vptr_name
) - 1))
2786 TYPE_VPTR_FIELDNO (type
) = i
;
2790 /* Virtual function table field not found. */
2791 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2796 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2807 attach_fn_fields_to_type (fip
, type
)
2808 struct field_info
*fip
;
2809 register struct type
*type
;
2813 for (n
= TYPE_NFN_FIELDS (type
);
2814 fip
-> fnlist
!= NULL
;
2815 fip
-> fnlist
= fip
-> fnlist
-> next
)
2817 --n
; /* Circumvent Sun3 compiler bug */
2818 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2823 /* Create the vector of fields, and record how big it is.
2824 We need this info to record proper virtual function table information
2825 for this class's virtual functions. */
2828 attach_fields_to_type (fip
, type
, objfile
)
2829 struct field_info
*fip
;
2830 register struct type
*type
;
2831 struct objfile
*objfile
;
2833 register int nfields
= 0;
2834 register int non_public_fields
= 0;
2835 register struct nextfield
*scan
;
2837 /* Count up the number of fields that we have, as well as taking note of
2838 whether or not there are any non-public fields, which requires us to
2839 allocate and build the private_field_bits and protected_field_bits
2842 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2845 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2847 non_public_fields
++;
2851 /* Now we know how many fields there are, and whether or not there are any
2852 non-public fields. Record the field count, allocate space for the
2853 array of fields, and create blank visibility bitfields if necessary. */
2855 TYPE_NFIELDS (type
) = nfields
;
2856 TYPE_FIELDS (type
) = (struct field
*)
2857 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2858 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2860 if (non_public_fields
)
2862 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2864 TYPE_FIELD_PRIVATE_BITS (type
) =
2865 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2866 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2868 TYPE_FIELD_PROTECTED_BITS (type
) =
2869 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2870 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2872 TYPE_FIELD_IGNORE_BITS (type
) =
2873 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2874 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2877 /* Copy the saved-up fields into the field vector. Start from the head
2878 of the list, adding to the tail of the field array, so that they end
2879 up in the same order in the array in which they were added to the list. */
2881 while (nfields
-- > 0)
2883 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2884 switch (fip
-> list
-> visibility
)
2886 case VISIBILITY_PRIVATE
:
2887 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2890 case VISIBILITY_PROTECTED
:
2891 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2894 case VISIBILITY_IGNORE
:
2895 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2898 case VISIBILITY_PUBLIC
:
2902 /* Unknown visibility. Complain and treat it as public. */
2904 static struct complaint msg
= {
2905 "Unknown visibility `%c' for field", 0, 0};
2906 complain (&msg
, fip
-> list
-> visibility
);
2910 fip
-> list
= fip
-> list
-> next
;
2915 /* Read the description of a structure (or union type) and return an object
2916 describing the type.
2918 PP points to a character pointer that points to the next unconsumed token
2919 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2920 *PP will point to "4a:1,0,32;;".
2922 TYPE points to an incomplete type that needs to be filled in.
2924 OBJFILE points to the current objfile from which the stabs information is
2925 being read. (Note that it is redundant in that TYPE also contains a pointer
2926 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2929 static struct type
*
2930 read_struct_type (pp
, type
, objfile
)
2933 struct objfile
*objfile
;
2935 struct cleanup
*back_to
;
2936 struct field_info fi
;
2941 back_to
= make_cleanup (null_cleanup
, 0);
2943 INIT_CPLUS_SPECIFIC (type
);
2944 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2946 /* First comes the total size in bytes. */
2950 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2952 return error_type (pp
, objfile
);
2955 /* Now read the baseclasses, if any, read the regular C struct or C++
2956 class member fields, attach the fields to the type, read the C++
2957 member functions, attach them to the type, and then read any tilde
2958 field (baseclass specifier for the class holding the main vtable). */
2960 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2961 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2962 || !attach_fields_to_type (&fi
, type
, objfile
)
2963 || !read_member_functions (&fi
, pp
, type
, objfile
)
2964 || !attach_fn_fields_to_type (&fi
, type
)
2965 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2967 do_cleanups (back_to
);
2968 return (error_type (pp
, objfile
));
2971 do_cleanups (back_to
);
2975 /* Read a definition of an array type,
2976 and create and return a suitable type object.
2977 Also creates a range type which represents the bounds of that
2980 static struct type
*
2981 read_array_type (pp
, type
, objfile
)
2983 register struct type
*type
;
2984 struct objfile
*objfile
;
2986 struct type
*index_type
, *element_type
, *range_type
;
2991 /* Format of an array type:
2992 "ar<index type>;lower;upper;<array_contents_type>".
2993 OS9000: "arlower,upper;<array_contents_type>".
2995 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2996 for these, produce a type like float[][]. */
2999 index_type
= builtin_type_int
;
3002 index_type
= read_type (pp
, objfile
);
3004 /* Improper format of array type decl. */
3005 return error_type (pp
, objfile
);
3009 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3014 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
3016 return error_type (pp
, objfile
);
3018 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3023 upper
= read_huge_number (pp
, ';', &nbits
);
3025 return error_type (pp
, objfile
);
3027 element_type
= read_type (pp
, objfile
);
3036 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3037 type
= create_array_type (type
, element_type
, range_type
);
3043 /* Read a definition of an enumeration type,
3044 and create and return a suitable type object.
3045 Also defines the symbols that represent the values of the type. */
3047 static struct type
*
3048 read_enum_type (pp
, type
, objfile
)
3050 register struct type
*type
;
3051 struct objfile
*objfile
;
3056 register struct symbol
*sym
;
3058 struct pending
**symlist
;
3059 struct pending
*osyms
, *syms
;
3062 int unsigned_enum
= 1;
3065 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3066 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3067 to do? For now, force all enum values to file scope. */
3068 if (within_function
)
3069 symlist
= &local_symbols
;
3072 symlist
= &file_symbols
;
3074 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3078 /* Size. Perhaps this does not have to be conditionalized on
3079 os9k_stabs (assuming the name of an enum constant can't start
3081 read_huge_number (pp
, 0, &nbits
);
3083 return error_type (pp
, objfile
);
3086 /* The aix4 compiler emits an extra field before the enum members;
3087 my guess is it's a type of some sort. Just ignore it. */
3090 /* Skip over the type. */
3094 /* Skip over the colon. */
3098 /* Read the value-names and their values.
3099 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3100 A semicolon or comma instead of a NAME means the end. */
3101 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3103 STABS_CONTINUE (pp
, objfile
);
3105 while (*p
!= ':') p
++;
3106 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3108 n
= read_huge_number (pp
, ',', &nbits
);
3110 return error_type (pp
, objfile
);
3112 sym
= (struct symbol
*)
3113 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3114 memset (sym
, 0, sizeof (struct symbol
));
3115 SYMBOL_NAME (sym
) = name
;
3116 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3117 SYMBOL_CLASS (sym
) = LOC_CONST
;
3118 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3119 SYMBOL_VALUE (sym
) = n
;
3122 add_symbol_to_list (sym
, symlist
);
3127 (*pp
)++; /* Skip the semicolon. */
3129 /* Now fill in the fields of the type-structure. */
3131 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3132 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3133 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3135 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3136 TYPE_NFIELDS (type
) = nsyms
;
3137 TYPE_FIELDS (type
) = (struct field
*)
3138 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3139 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3141 /* Find the symbols for the values and put them into the type.
3142 The symbols can be found in the symlist that we put them on
3143 to cause them to be defined. osyms contains the old value
3144 of that symlist; everything up to there was defined by us. */
3145 /* Note that we preserve the order of the enum constants, so
3146 that in something like "enum {FOO, LAST_THING=FOO}" we print
3147 FOO, not LAST_THING. */
3149 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3151 int last
= syms
== osyms
? o_nsyms
: 0;
3152 int j
= syms
->nsyms
;
3153 for (; --j
>= last
; --n
)
3155 struct symbol
*xsym
= syms
->symbol
[j
];
3156 SYMBOL_TYPE (xsym
) = type
;
3157 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3158 TYPE_FIELD_VALUE (type
, n
) = 0;
3159 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3160 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3169 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3170 typedefs in every file (for int, long, etc):
3172 type = b <signed> <width>; <offset>; <nbits>
3173 signed = u or s. Possible c in addition to u or s (for char?).
3174 offset = offset from high order bit to start bit of type.
3175 width is # bytes in object of this type, nbits is # bits in type.
3177 The width/offset stuff appears to be for small objects stored in
3178 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3181 static struct type
*
3182 read_sun_builtin_type (pp
, typenums
, objfile
)
3185 struct objfile
*objfile
;
3200 return error_type (pp
, objfile
);
3204 /* For some odd reason, all forms of char put a c here. This is strange
3205 because no other type has this honor. We can safely ignore this because
3206 we actually determine 'char'acterness by the number of bits specified in
3212 /* The first number appears to be the number of bytes occupied
3213 by this type, except that unsigned short is 4 instead of 2.
3214 Since this information is redundant with the third number,
3215 we will ignore it. */
3216 read_huge_number (pp
, ';', &nbits
);
3218 return error_type (pp
, objfile
);
3220 /* The second number is always 0, so ignore it too. */
3221 read_huge_number (pp
, ';', &nbits
);
3223 return error_type (pp
, objfile
);
3225 /* The third number is the number of bits for this type. */
3226 type_bits
= read_huge_number (pp
, 0, &nbits
);
3228 return error_type (pp
, objfile
);
3229 /* The type *should* end with a semicolon. If it are embedded
3230 in a larger type the semicolon may be the only way to know where
3231 the type ends. If this type is at the end of the stabstring we
3232 can deal with the omitted semicolon (but we don't have to like
3233 it). Don't bother to complain(), Sun's compiler omits the semicolon
3239 return init_type (TYPE_CODE_VOID
, 1,
3240 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3243 return init_type (TYPE_CODE_INT
,
3244 type_bits
/ TARGET_CHAR_BIT
,
3245 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3249 static struct type
*
3250 read_sun_floating_type (pp
, typenums
, objfile
)
3253 struct objfile
*objfile
;
3259 /* The first number has more details about the type, for example
3261 details
= read_huge_number (pp
, ';', &nbits
);
3263 return error_type (pp
, objfile
);
3265 /* The second number is the number of bytes occupied by this type */
3266 nbytes
= read_huge_number (pp
, ';', &nbits
);
3268 return error_type (pp
, objfile
);
3270 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3271 || details
== NF_COMPLEX32
)
3272 /* This is a type we can't handle, but we do know the size.
3273 We also will be able to give it a name. */
3274 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3276 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3279 /* Read a number from the string pointed to by *PP.
3280 The value of *PP is advanced over the number.
3281 If END is nonzero, the character that ends the
3282 number must match END, or an error happens;
3283 and that character is skipped if it does match.
3284 If END is zero, *PP is left pointing to that character.
3286 If the number fits in a long, set *BITS to 0 and return the value.
3287 If not, set *BITS to be the number of bits in the number and return 0.
3289 If encounter garbage, set *BITS to -1 and return 0. */
3292 read_huge_number (pp
, end
, bits
)
3312 /* Leading zero means octal. GCC uses this to output values larger
3313 than an int (because that would be hard in decimal). */
3321 upper_limit
= ULONG_MAX
/ radix
;
3323 upper_limit
= LONG_MAX
/ radix
;
3325 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3327 if (n
<= upper_limit
)
3330 n
+= c
- '0'; /* FIXME this overflows anyway */
3335 /* This depends on large values being output in octal, which is
3342 /* Ignore leading zeroes. */
3346 else if (c
== '2' || c
== '3')
3372 /* Large decimal constants are an error (because it is hard to
3373 count how many bits are in them). */
3379 /* -0x7f is the same as 0x80. So deal with it by adding one to
3380 the number of bits. */
3392 /* It's *BITS which has the interesting information. */
3396 static struct type
*
3397 read_range_type (pp
, typenums
, objfile
)
3400 struct objfile
*objfile
;
3402 char *orig_pp
= *pp
;
3407 struct type
*result_type
;
3408 struct type
*index_type
= NULL
;
3410 /* First comes a type we are a subrange of.
3411 In C it is usually 0, 1 or the type being defined. */
3412 if (read_type_number (pp
, rangenums
) != 0)
3413 return error_type (pp
, objfile
);
3414 self_subrange
= (rangenums
[0] == typenums
[0] &&
3415 rangenums
[1] == typenums
[1]);
3420 index_type
= read_type (pp
, objfile
);
3423 /* A semicolon should now follow; skip it. */
3427 /* The remaining two operands are usually lower and upper bounds
3428 of the range. But in some special cases they mean something else. */
3429 n2
= read_huge_number (pp
, ';', &n2bits
);
3430 n3
= read_huge_number (pp
, ';', &n3bits
);
3432 if (n2bits
== -1 || n3bits
== -1)
3433 return error_type (pp
, objfile
);
3436 goto handle_true_range
;
3438 /* If limits are huge, must be large integral type. */
3439 if (n2bits
!= 0 || n3bits
!= 0)
3441 char got_signed
= 0;
3442 char got_unsigned
= 0;
3443 /* Number of bits in the type. */
3446 /* Range from 0 to <large number> is an unsigned large integral type. */
3447 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3452 /* Range from <large number> to <large number>-1 is a large signed
3453 integral type. Take care of the case where <large number> doesn't
3454 fit in a long but <large number>-1 does. */
3455 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3456 || (n2bits
!= 0 && n3bits
== 0
3457 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3464 if (got_signed
|| got_unsigned
)
3466 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3467 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3471 return error_type (pp
, objfile
);
3474 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3475 if (self_subrange
&& n2
== 0 && n3
== 0)
3476 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3478 /* If n3 is zero and n2 is positive, we want a floating type,
3479 and n2 is the width in bytes.
3481 Fortran programs appear to use this for complex types also,
3482 and they give no way to distinguish between double and single-complex!
3484 GDB does not have complex types.
3486 Just return the complex as a float of that size. It won't work right
3487 for the complex values, but at least it makes the file loadable. */
3489 if (n3
== 0 && n2
> 0)
3491 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3494 /* If the upper bound is -1, it must really be an unsigned int. */
3496 else if (n2
== 0 && n3
== -1)
3498 /* It is unsigned int or unsigned long. */
3499 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3500 compatibility hack. */
3501 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3502 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3505 /* Special case: char is defined (Who knows why) as a subrange of
3506 itself with range 0-127. */
3507 else if (self_subrange
&& n2
== 0 && n3
== 127)
3508 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3510 else if (current_symbol
&& SYMBOL_LANGUAGE (current_symbol
) == language_chill
3511 && SYMBOL_LINE (current_symbol
) > 0)
3512 goto handle_true_range
;
3514 /* We used to do this only for subrange of self or subrange of int. */
3518 /* n3 actually gives the size. */
3519 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3522 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3524 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3526 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3527 "unsigned long", and we already checked for that,
3528 so don't need to test for it here. */
3530 /* I think this is for Convex "long long". Since I don't know whether
3531 Convex sets self_subrange, I also accept that particular size regardless
3532 of self_subrange. */
3533 else if (n3
== 0 && n2
< 0
3535 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3536 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3537 else if (n2
== -n3
-1)
3540 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3542 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3543 if (n3
== 0x7fffffff)
3544 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3547 /* We have a real range type on our hands. Allocate space and
3548 return a real pointer. */
3551 /* At this point I don't have the faintest idea how to deal with
3552 a self_subrange type; I'm going to assume that this is used
3553 as an idiom, and that all of them are special cases. So . . . */
3555 return error_type (pp
, objfile
);
3557 index_type
= *dbx_lookup_type (rangenums
);
3558 if (index_type
== NULL
)
3560 /* Does this actually ever happen? Is that why we are worrying
3561 about dealing with it rather than just calling error_type? */
3563 static struct type
*range_type_index
;
3565 complain (&range_type_base_complaint
, rangenums
[1]);
3566 if (range_type_index
== NULL
)
3568 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3569 0, "range type index type", NULL
);
3570 index_type
= range_type_index
;
3573 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3574 return (result_type
);
3577 /* Read in an argument list. This is a list of types, separated by commas
3578 and terminated with END. Return the list of types read in, or (struct type
3579 **)-1 if there is an error. */
3581 static struct type
**
3582 read_args (pp
, end
, objfile
)
3585 struct objfile
*objfile
;
3587 /* FIXME! Remove this arbitrary limit! */
3588 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3594 /* Invalid argument list: no ','. */
3595 return (struct type
**)-1;
3597 STABS_CONTINUE (pp
, objfile
);
3598 types
[n
++] = read_type (pp
, objfile
);
3600 (*pp
)++; /* get past `end' (the ':' character) */
3604 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3606 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3608 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3609 memset (rval
+ n
, 0, sizeof (struct type
*));
3613 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3615 memcpy (rval
, types
, n
* sizeof (struct type
*));
3619 /* Common block handling. */
3621 /* List of symbols declared since the last BCOMM. This list is a tail
3622 of local_symbols. When ECOMM is seen, the symbols on the list
3623 are noted so their proper addresses can be filled in later,
3624 using the common block base address gotten from the assembler
3627 static struct pending
*common_block
;
3628 static int common_block_i
;
3630 /* Name of the current common block. We get it from the BCOMM instead of the
3631 ECOMM to match IBM documentation (even though IBM puts the name both places
3632 like everyone else). */
3633 static char *common_block_name
;
3635 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3636 to remain after this function returns. */
3639 common_block_start (name
, objfile
)
3641 struct objfile
*objfile
;
3643 if (common_block_name
!= NULL
)
3645 static struct complaint msg
= {
3646 "Invalid symbol data: common block within common block",
3650 common_block
= local_symbols
;
3651 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3652 common_block_name
= obsavestring (name
, strlen (name
),
3653 &objfile
-> symbol_obstack
);
3656 /* Process a N_ECOMM symbol. */
3659 common_block_end (objfile
)
3660 struct objfile
*objfile
;
3662 /* Symbols declared since the BCOMM are to have the common block
3663 start address added in when we know it. common_block and
3664 common_block_i point to the first symbol after the BCOMM in
3665 the local_symbols list; copy the list and hang it off the
3666 symbol for the common block name for later fixup. */
3669 struct pending
*new = 0;
3670 struct pending
*next
;
3673 if (common_block_name
== NULL
)
3675 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3680 sym
= (struct symbol
*)
3681 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3682 memset (sym
, 0, sizeof (struct symbol
));
3683 SYMBOL_NAME (sym
) = common_block_name
;
3684 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3686 /* Now we copy all the symbols which have been defined since the BCOMM. */
3688 /* Copy all the struct pendings before common_block. */
3689 for (next
= local_symbols
;
3690 next
!= NULL
&& next
!= common_block
;
3693 for (j
= 0; j
< next
->nsyms
; j
++)
3694 add_symbol_to_list (next
->symbol
[j
], &new);
3697 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3698 NULL, it means copy all the local symbols (which we already did
3701 if (common_block
!= NULL
)
3702 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3703 add_symbol_to_list (common_block
->symbol
[j
], &new);
3705 SYMBOL_TYPE (sym
) = (struct type
*) new;
3707 /* Should we be putting local_symbols back to what it was?
3710 i
= hashname (SYMBOL_NAME (sym
));
3711 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3712 global_sym_chain
[i
] = sym
;
3713 common_block_name
= NULL
;
3716 /* Add a common block's start address to the offset of each symbol
3717 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3718 the common block name). */
3721 fix_common_block (sym
, valu
)
3725 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3726 for ( ; next
; next
= next
->next
)
3729 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3730 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3736 /* What about types defined as forward references inside of a small lexical
3738 /* Add a type to the list of undefined types to be checked through
3739 once this file has been read in. */
3742 add_undefined_type (type
)
3745 if (undef_types_length
== undef_types_allocated
)
3747 undef_types_allocated
*= 2;
3748 undef_types
= (struct type
**)
3749 xrealloc ((char *) undef_types
,
3750 undef_types_allocated
* sizeof (struct type
*));
3752 undef_types
[undef_types_length
++] = type
;
3755 /* Go through each undefined type, see if it's still undefined, and fix it
3756 up if possible. We have two kinds of undefined types:
3758 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3759 Fix: update array length using the element bounds
3760 and the target type's length.
3761 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3762 yet defined at the time a pointer to it was made.
3763 Fix: Do a full lookup on the struct/union tag. */
3765 cleanup_undefined_types ()
3769 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3771 switch (TYPE_CODE (*type
))
3774 case TYPE_CODE_STRUCT
:
3775 case TYPE_CODE_UNION
:
3776 case TYPE_CODE_ENUM
:
3778 /* Check if it has been defined since. Need to do this here
3779 as well as in check_typedef to deal with the (legitimate in
3780 C though not C++) case of several types with the same name
3781 in different source files. */
3782 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3784 struct pending
*ppt
;
3786 /* Name of the type, without "struct" or "union" */
3787 char *typename
= TYPE_TAG_NAME (*type
);
3789 if (typename
== NULL
)
3791 static struct complaint msg
= {"need a type name", 0, 0};
3795 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3797 for (i
= 0; i
< ppt
->nsyms
; i
++)
3799 struct symbol
*sym
= ppt
->symbol
[i
];
3801 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3802 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3803 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3805 && STREQ (SYMBOL_NAME (sym
), typename
))
3807 memcpy (*type
, SYMBOL_TYPE (sym
),
3808 sizeof (struct type
));
3819 static struct complaint msg
= {"\
3820 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3821 complain (&msg
, TYPE_CODE (*type
));
3827 undef_types_length
= 0;
3830 /* Scan through all of the global symbols defined in the object file,
3831 assigning values to the debugging symbols that need to be assigned
3832 to. Get these symbols from the minimal symbol table. */
3835 scan_file_globals (objfile
)
3836 struct objfile
*objfile
;
3839 struct minimal_symbol
*msymbol
;
3840 struct symbol
*sym
, *prev
;
3842 /* Avoid expensive loop through all minimal symbols if there are
3843 no unresolved symbols. */
3844 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3846 if (global_sym_chain
[hash
])
3849 if (hash
>= HASHSIZE
)
3852 for (msymbol
= objfile
-> msymbols
;
3853 msymbol
&& SYMBOL_NAME (msymbol
) != NULL
;
3858 /* Skip static symbols. */
3859 switch (MSYMBOL_TYPE (msymbol
))
3871 /* Get the hash index and check all the symbols
3872 under that hash index. */
3874 hash
= hashname (SYMBOL_NAME (msymbol
));
3876 for (sym
= global_sym_chain
[hash
]; sym
;)
3878 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3879 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3881 /* Splice this symbol out of the hash chain and
3882 assign the value we have to it. */
3885 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3889 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3892 /* Check to see whether we need to fix up a common block. */
3893 /* Note: this code might be executed several times for
3894 the same symbol if there are multiple references. */
3896 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3898 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3902 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3905 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3909 sym
= SYMBOL_VALUE_CHAIN (prev
);
3913 sym
= global_sym_chain
[hash
];
3919 sym
= SYMBOL_VALUE_CHAIN (sym
);
3924 /* Change the storage class of any remaining unresolved globals to
3925 LOC_UNRESOLVED and remove them from the chain. */
3926 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3928 sym
= global_sym_chain
[hash
];
3932 sym
= SYMBOL_VALUE_CHAIN (sym
);
3934 /* Change the symbol address from the misleading chain value
3936 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3938 /* Complain about unresolved common block symbols. */
3939 if (SYMBOL_CLASS (prev
) == LOC_STATIC
)
3940 SYMBOL_CLASS (prev
) = LOC_UNRESOLVED
;
3942 complain (&unresolved_sym_chain_complaint
,
3943 objfile
->name
, SYMBOL_NAME (prev
));
3946 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3949 /* Initialize anything that needs initializing when starting to read
3950 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3958 /* Initialize anything that needs initializing when a completely new
3959 symbol file is specified (not just adding some symbols from another
3960 file, e.g. a shared library). */
3963 stabsread_new_init ()
3965 /* Empty the hash table of global syms looking for values. */
3966 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3969 /* Initialize anything that needs initializing at the same time as
3970 start_symtab() is called. */
3974 global_stabs
= NULL
; /* AIX COFF */
3975 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3976 n_this_object_header_files
= 1;
3977 type_vector_length
= 0;
3978 type_vector
= (struct type
**) 0;
3980 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3981 common_block_name
= NULL
;
3986 /* Call after end_symtab() */
3992 free ((char *) type_vector
);
3995 type_vector_length
= 0;
3996 previous_stab_code
= 0;
4000 finish_global_stabs (objfile
)
4001 struct objfile
*objfile
;
4005 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4006 free ((PTR
) global_stabs
);
4007 global_stabs
= NULL
;
4011 /* Initializer for this module */
4014 _initialize_stabsread ()
4016 undef_types_allocated
= 20;
4017 undef_types_length
= 0;
4018 undef_types
= (struct type
**)
4019 xmalloc (undef_types_allocated
* sizeof (struct type
*));