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., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
35 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
37 #include "aout/aout64.h"
38 #include "gdb-stabs.h"
40 #include "complaints.h"
45 /* Ask stabsread.h to define the vars it normally declares `extern'. */
47 #include "stabsread.h" /* Our own declarations */
50 /* The routines that read and process a complete stabs for a C struct or
51 C++ class pass lists of data member fields and lists of member function
52 fields in an instance of a field_info structure, as defined below.
53 This is part of some reorganization of low level C++ support and is
54 expected to eventually go away... (FIXME) */
60 struct nextfield
*next
;
62 /* This is the raw visibility from the stab. It is not checked
63 for being one of the visibilities we recognize, so code which
64 examines this field better be able to deal. */
69 struct next_fnfieldlist
71 struct next_fnfieldlist
*next
;
72 struct fn_fieldlist fn_fieldlist
;
77 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
79 static long read_huge_number
PARAMS ((char **, int, int *));
81 static struct type
*error_type
PARAMS ((char **));
84 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
88 fix_common_block
PARAMS ((struct symbol
*, int));
91 read_type_number
PARAMS ((char **, int *));
94 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
97 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
100 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
103 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
106 rs6000_builtin_type
PARAMS ((int));
109 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
113 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
117 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
121 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
125 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
128 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
132 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
135 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
137 static struct type
**
138 read_args
PARAMS ((char **, int, struct objfile
*));
141 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
144 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
145 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
147 /* Define this as 1 if a pcc declaration of a char or short argument
148 gives the correct address. Otherwise assume pcc gives the
149 address of the corresponding int, which is not the same on a
150 big-endian machine. */
152 #ifndef BELIEVE_PCC_PROMOTION
153 #define BELIEVE_PCC_PROMOTION 0
156 struct complaint invalid_cpp_abbrev_complaint
=
157 {"invalid C++ abbreviation `%s'", 0, 0};
159 struct complaint invalid_cpp_type_complaint
=
160 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
162 struct complaint member_fn_complaint
=
163 {"member function type missing, got '%c'", 0, 0};
165 struct complaint const_vol_complaint
=
166 {"const/volatile indicator missing, got '%c'", 0, 0};
168 struct complaint error_type_complaint
=
169 {"debug info mismatch between compiler and debugger", 0, 0};
171 struct complaint invalid_member_complaint
=
172 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
174 struct complaint range_type_base_complaint
=
175 {"base type %d of range type is not defined", 0, 0};
177 struct complaint reg_value_complaint
=
178 {"register number too large in symbol %s", 0, 0};
180 struct complaint vtbl_notfound_complaint
=
181 {"virtual function table pointer not found when defining class `%s'", 0, 0};
183 struct complaint unrecognized_cplus_name_complaint
=
184 {"Unknown C++ symbol name `%s'", 0, 0};
186 struct complaint rs6000_builtin_complaint
=
187 {"Unknown builtin type %d", 0, 0};
189 struct complaint unresolved_sym_chain_complaint
=
190 {"%s: `%s' from global_sym_chain unresolved", 0, 0};
192 struct complaint stabs_general_complaint
=
195 /* Make a list of forward references which haven't been defined. */
197 static struct type
**undef_types
;
198 static int undef_types_allocated
;
199 static int undef_types_length
;
201 /* Check for and handle cretinous stabs symbol name continuation! */
202 #define STABS_CONTINUE(pp) \
204 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
205 *(pp) = next_symbol_text (); \
208 /* FIXME: These probably should be our own types (like rs6000_builtin_type
209 has its own types) rather than builtin_type_*. */
210 static struct type
**os9k_type_vector
[] = {
216 &builtin_type_unsigned_char
,
217 &builtin_type_unsigned_short
,
218 &builtin_type_unsigned_long
,
219 &builtin_type_unsigned_int
,
221 &builtin_type_double
,
223 &builtin_type_long_double
226 static void os9k_init_type_vector
PARAMS ((struct type
**));
229 os9k_init_type_vector(tv
)
233 for (i
=0; i
<sizeof(os9k_type_vector
)/sizeof(struct type
**); i
++)
234 tv
[i
] = (os9k_type_vector
[i
] == 0 ? 0 : *(os9k_type_vector
[i
]));
237 /* Look up a dbx type-number pair. Return the address of the slot
238 where the type for that number-pair is stored.
239 The number-pair is in TYPENUMS.
241 This can be used for finding the type associated with that pair
242 or for associating a new type with the pair. */
245 dbx_lookup_type (typenums
)
248 register int filenum
= typenums
[0];
249 register int index
= typenums
[1];
251 register int real_filenum
;
252 register struct header_file
*f
;
255 if (filenum
== -1) /* -1,-1 is for temporary types. */
258 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
260 static struct complaint msg
= {"\
261 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
263 complain (&msg
, filenum
, index
, symnum
);
271 /* Caller wants address of address of type. We think
272 that negative (rs6k builtin) types will never appear as
273 "lvalues", (nor should they), so we stuff the real type
274 pointer into a temp, and return its address. If referenced,
275 this will do the right thing. */
276 static struct type
*temp_type
;
278 temp_type
= rs6000_builtin_type(index
);
282 /* Type is defined outside of header files.
283 Find it in this object file's type vector. */
284 if (index
>= type_vector_length
)
286 old_len
= type_vector_length
;
289 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
290 type_vector
= (struct type
**)
291 malloc (type_vector_length
* sizeof (struct type
*));
293 while (index
>= type_vector_length
)
295 type_vector_length
*= 2;
297 type_vector
= (struct type
**)
298 xrealloc ((char *) type_vector
,
299 (type_vector_length
* sizeof (struct type
*)));
300 memset (&type_vector
[old_len
], 0,
301 (type_vector_length
- old_len
) * sizeof (struct type
*));
304 /* Deal with OS9000 fundamental types. */
305 os9k_init_type_vector (type_vector
);
307 return (&type_vector
[index
]);
311 real_filenum
= this_object_header_files
[filenum
];
313 if (real_filenum
>= n_header_files
)
315 struct type
*temp_type
;
316 struct type
**temp_type_p
;
318 warning ("GDB internal error: bad real_filenum");
321 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
322 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
323 *temp_type_p
= temp_type
;
327 f
= &header_files
[real_filenum
];
329 f_orig_length
= f
->length
;
330 if (index
>= f_orig_length
)
332 while (index
>= f
->length
)
336 f
->vector
= (struct type
**)
337 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
338 memset (&f
->vector
[f_orig_length
], 0,
339 (f
->length
- f_orig_length
) * sizeof (struct type
*));
341 return (&f
->vector
[index
]);
345 /* Make sure there is a type allocated for type numbers TYPENUMS
346 and return the type object.
347 This can create an empty (zeroed) type object.
348 TYPENUMS may be (-1, -1) to return a new type object that is not
349 put into the type vector, and so may not be referred to by number. */
352 dbx_alloc_type (typenums
, objfile
)
354 struct objfile
*objfile
;
356 register struct type
**type_addr
;
358 if (typenums
[0] == -1)
360 return (alloc_type (objfile
));
363 type_addr
= dbx_lookup_type (typenums
);
365 /* If we are referring to a type not known at all yet,
366 allocate an empty type for it.
367 We will fill it in later if we find out how. */
370 *type_addr
= alloc_type (objfile
);
376 /* for all the stabs in a given stab vector, build appropriate types
377 and fix their symbols in given symbol vector. */
380 patch_block_stabs (symbols
, stabs
, objfile
)
381 struct pending
*symbols
;
382 struct pending_stabs
*stabs
;
383 struct objfile
*objfile
;
393 /* for all the stab entries, find their corresponding symbols and
394 patch their types! */
396 for (ii
= 0; ii
< stabs
->count
; ++ii
)
398 name
= stabs
->stab
[ii
];
399 pp
= (char*) strchr (name
, ':');
403 pp
= (char *)strchr(pp
, ':');
405 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
408 /* FIXME-maybe: it would be nice if we noticed whether
409 the variable was defined *anywhere*, not just whether
410 it is defined in this compilation unit. But neither
411 xlc or GCC seem to need such a definition, and until
412 we do psymtabs (so that the minimal symbols from all
413 compilation units are available now), I'm not sure
414 how to get the information. */
416 /* On xcoff, if a global is defined and never referenced,
417 ld will remove it from the executable. There is then
418 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
419 sym
= (struct symbol
*)
420 obstack_alloc (&objfile
->symbol_obstack
,
421 sizeof (struct symbol
));
423 memset (sym
, 0, sizeof (struct symbol
));
424 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
425 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
427 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
429 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
431 /* I don't think the linker does this with functions,
432 so as far as I know this is never executed.
433 But it doesn't hurt to check. */
435 lookup_function_type (read_type (&pp
, objfile
));
439 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
441 add_symbol_to_list (sym
, &global_symbols
);
446 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
449 lookup_function_type (read_type (&pp
, objfile
));
453 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
461 /* Read a number by which a type is referred to in dbx data,
462 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
463 Just a single number N is equivalent to (0,N).
464 Return the two numbers by storing them in the vector TYPENUMS.
465 TYPENUMS will then be used as an argument to dbx_lookup_type.
467 Returns 0 for success, -1 for error. */
470 read_type_number (pp
, typenums
)
472 register int *typenums
;
478 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
479 if (nbits
!= 0) return -1;
480 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
481 if (nbits
!= 0) return -1;
486 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
487 if (nbits
!= 0) return -1;
493 /* To handle GNU C++ typename abbreviation, we need to be able to
494 fill in a type's name as soon as space for that type is allocated.
495 `type_synonym_name' is the name of the type being allocated.
496 It is cleared as soon as it is used (lest all allocated types
499 static char *type_synonym_name
;
501 #if !defined (REG_STRUCT_HAS_ADDR)
502 #define REG_STRUCT_HAS_ADDR(gcc_p,type) 0
507 define_symbol (valu
, string
, desc
, type
, objfile
)
512 struct objfile
*objfile
;
514 register struct symbol
*sym
;
515 char *p
= (char *) strchr (string
, ':');
520 /* We would like to eliminate nameless symbols, but keep their types.
521 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
522 to type 2, but, should not create a symbol to address that type. Since
523 the symbol will be nameless, there is no way any user can refer to it. */
527 /* Ignore syms with empty names. */
531 /* Ignore old-style symbols from cc -go */
541 /* If a nameless stab entry, all we need is the type, not the symbol.
542 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
543 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
545 sym
= (struct symbol
*)
546 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
547 memset (sym
, 0, sizeof (struct symbol
));
549 switch (type
& N_TYPE
)
552 SYMBOL_SECTION(sym
) = SECT_OFF_TEXT
;
555 SYMBOL_SECTION(sym
) = SECT_OFF_DATA
;
558 SYMBOL_SECTION(sym
) = SECT_OFF_BSS
;
562 if (processing_gcc_compilation
)
564 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
565 number of bytes occupied by a type or object, which we ignore. */
566 SYMBOL_LINE(sym
) = desc
;
570 SYMBOL_LINE(sym
) = 0; /* unknown */
573 if (string
[0] == CPLUS_MARKER
)
575 /* Special GNU C++ names. */
579 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
580 &objfile
-> symbol_obstack
);
583 case 'v': /* $vtbl_ptr_type */
584 /* Was: SYMBOL_NAME (sym) = "vptr"; */
588 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
589 &objfile
-> symbol_obstack
);
593 /* This was an anonymous type that was never fixed up. */
597 complain (&unrecognized_cplus_name_complaint
, string
);
598 goto normal
; /* Do *something* with it */
604 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
605 SYMBOL_NAME (sym
) = (char *)
606 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
607 /* Open-coded memcpy--saves function call time. */
608 /* FIXME: Does it really? Try replacing with simple strcpy and
609 try it on an executable with a large symbol table. */
610 /* FIXME: considering that gcc can open code memcpy anyway, I
611 doubt it. xoxorich. */
613 register char *p1
= string
;
614 register char *p2
= SYMBOL_NAME (sym
);
622 /* If this symbol is from a C++ compilation, then attempt to cache the
623 demangled form for future reference. This is a typical time versus
624 space tradeoff, that was decided in favor of time because it sped up
625 C++ symbol lookups by a factor of about 20. */
627 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
631 /* Determine the type of name being defined. */
633 /* Getting GDB to correctly skip the symbol on an undefined symbol
634 descriptor and not ever dump core is a very dodgy proposition if
635 we do things this way. I say the acorn RISC machine can just
636 fix their compiler. */
637 /* The Acorn RISC machine's compiler can put out locals that don't
638 start with "234=" or "(3,4)=", so assume anything other than the
639 deftypes we know how to handle is a local. */
640 if (!strchr ("cfFGpPrStTvVXCR", *p
))
642 if (isdigit (*p
) || *p
== '(' || *p
== '-')
651 /* c is a special case, not followed by a type-number.
652 SYMBOL:c=iVALUE for an integer constant symbol.
653 SYMBOL:c=rVALUE for a floating constant symbol.
654 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
655 e.g. "b:c=e6,0" for "const b = blob1"
656 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
659 SYMBOL_CLASS (sym
) = LOC_CONST
;
660 SYMBOL_TYPE (sym
) = error_type (&p
);
661 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
662 add_symbol_to_list (sym
, &file_symbols
);
673 /* FIXME-if-picky-about-floating-accuracy: Should be using
674 target arithmetic to get the value. real.c in GCC
675 probably has the necessary code. */
677 /* FIXME: lookup_fundamental_type is a hack. We should be
678 creating a type especially for the type of float constants.
679 Problem is, what type should it be?
681 Also, what should the name of this type be? Should we
682 be using 'S' constants (see stabs.texinfo) instead? */
684 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
687 obstack_alloc (&objfile
-> symbol_obstack
,
688 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
689 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
690 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
691 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
696 /* Defining integer constants this way is kind of silly,
697 since 'e' constants allows the compiler to give not
698 only the value, but the type as well. C has at least
699 int, long, unsigned int, and long long as constant
700 types; other languages probably should have at least
701 unsigned as well as signed constants. */
703 /* We just need one int constant type for all objfiles.
704 It doesn't depend on languages or anything (arguably its
705 name should be a language-specific name for a type of
706 that size, but I'm inclined to say that if the compiler
707 wants a nice name for the type, it can use 'e'). */
708 static struct type
*int_const_type
;
710 /* Yes, this is as long as a *host* int. That is because we
712 if (int_const_type
== NULL
)
714 init_type (TYPE_CODE_INT
,
715 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
717 (struct objfile
*)NULL
);
718 SYMBOL_TYPE (sym
) = int_const_type
;
719 SYMBOL_VALUE (sym
) = atoi (p
);
720 SYMBOL_CLASS (sym
) = LOC_CONST
;
724 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
725 can be represented as integral.
726 e.g. "b:c=e6,0" for "const b = blob1"
727 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
729 SYMBOL_CLASS (sym
) = LOC_CONST
;
730 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
734 SYMBOL_TYPE (sym
) = error_type (&p
);
739 /* If the value is too big to fit in an int (perhaps because
740 it is unsigned), or something like that, we silently get
741 a bogus value. The type and everything else about it is
742 correct. Ideally, we should be using whatever we have
743 available for parsing unsigned and long long values,
745 SYMBOL_VALUE (sym
) = atoi (p
);
750 SYMBOL_CLASS (sym
) = LOC_CONST
;
751 SYMBOL_TYPE (sym
) = error_type (&p
);
754 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
755 add_symbol_to_list (sym
, &file_symbols
);
759 /* The name of a caught exception. */
760 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
761 SYMBOL_CLASS (sym
) = LOC_LABEL
;
762 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
763 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
764 add_symbol_to_list (sym
, &local_symbols
);
768 /* A static function definition. */
769 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
770 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
771 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
772 add_symbol_to_list (sym
, &file_symbols
);
773 /* fall into process_function_types. */
775 process_function_types
:
776 /* Function result types are described as the result type in stabs.
777 We need to convert this to the function-returning-type-X type
778 in GDB. E.g. "int" is converted to "function returning int". */
779 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
780 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
781 /* fall into process_prototype_types */
783 process_prototype_types
:
784 /* Sun acc puts declared types of arguments here. We don't care
785 about their actual types (FIXME -- we should remember the whole
786 function prototype), but the list may define some new types
787 that we have to remember, so we must scan it now. */
790 read_type (&p
, objfile
);
795 /* A global function definition. */
796 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
797 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
798 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
799 add_symbol_to_list (sym
, &global_symbols
);
800 goto process_function_types
;
803 /* For a class G (global) symbol, it appears that the
804 value is not correct. It is necessary to search for the
805 corresponding linker definition to find the value.
806 These definitions appear at the end of the namelist. */
807 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
808 i
= hashname (SYMBOL_NAME (sym
));
809 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
810 global_sym_chain
[i
] = sym
;
811 SYMBOL_CLASS (sym
) = LOC_STATIC
;
812 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
813 add_symbol_to_list (sym
, &global_symbols
);
816 /* This case is faked by a conditional above,
817 when there is no code letter in the dbx data.
818 Dbx data never actually contains 'l'. */
821 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
822 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
823 SYMBOL_VALUE (sym
) = valu
;
824 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
825 add_symbol_to_list (sym
, &local_symbols
);
830 /* pF is a two-letter code that means a function parameter in Fortran.
831 The type-number specifies the type of the return value.
832 Translate it into a pointer-to-function type. */
836 = lookup_pointer_type
837 (lookup_function_type (read_type (&p
, objfile
)));
840 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
842 /* Normally this is a parameter, a LOC_ARG. On the i960, it
843 can also be a LOC_LOCAL_ARG depending on symbol type. */
844 #ifndef DBX_PARM_SYMBOL_CLASS
845 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
848 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
849 SYMBOL_VALUE (sym
) = valu
;
850 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
851 add_symbol_to_list (sym
, &local_symbols
);
853 if (TARGET_BYTE_ORDER
!= BIG_ENDIAN
)
855 /* On little-endian machines, this crud is never necessary,
856 and, if the extra bytes contain garbage, is harmful. */
860 /* If it's gcc-compiled, if it says `short', believe it. */
861 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
864 #if !BELIEVE_PCC_PROMOTION
866 /* This is the signed type which arguments get promoted to. */
867 static struct type
*pcc_promotion_type
;
868 /* This is the unsigned type which arguments get promoted to. */
869 static struct type
*pcc_unsigned_promotion_type
;
871 /* Call it "int" because this is mainly C lossage. */
872 if (pcc_promotion_type
== NULL
)
874 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
877 if (pcc_unsigned_promotion_type
== NULL
)
878 pcc_unsigned_promotion_type
=
879 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
880 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
882 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
883 /* This macro is defined on machines (e.g. sparc) where
884 we should believe the type of a PCC 'short' argument,
885 but shouldn't believe the address (the address is
886 the address of the corresponding int).
888 My guess is that this correction, as opposed to changing
889 the parameter to an 'int' (as done below, for PCC
890 on most machines), is the right thing to do
891 on all machines, but I don't want to risk breaking
892 something that already works. On most PCC machines,
893 the sparc problem doesn't come up because the calling
894 function has to zero the top bytes (not knowing whether
895 the called function wants an int or a short), so there
896 is little practical difference between an int and a short
897 (except perhaps what happens when the GDB user types
898 "print short_arg = 0x10000;").
900 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
901 actually produces the correct address (we don't need to fix it
902 up). I made this code adapt so that it will offset the symbol
903 if it was pointing at an int-aligned location and not
904 otherwise. This way you can use the same gdb for 4.0.x and
907 If the parameter is shorter than an int, and is integral
908 (e.g. char, short, or unsigned equivalent), and is claimed to
909 be passed on an integer boundary, don't believe it! Offset the
910 parameter's address to the tail-end of that integer. */
912 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
913 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
914 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
916 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
917 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
921 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
923 /* If PCC says a parameter is a short or a char,
924 it is really an int. */
925 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
926 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
929 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
930 ? pcc_unsigned_promotion_type
931 : pcc_promotion_type
;
935 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
937 #endif /* !BELIEVE_PCC_PROMOTION. */
940 /* acc seems to use P to delare the prototypes of functions that
941 are referenced by this file. gdb is not prepared to deal
942 with this extra information. FIXME, it ought to. */
945 read_type (&p
, objfile
);
946 goto process_prototype_types
;
951 /* Parameter which is in a register. */
952 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
953 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
954 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
955 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
957 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
958 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
960 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
961 add_symbol_to_list (sym
, &local_symbols
);
965 /* Register variable (either global or local). */
966 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
967 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
968 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
969 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
971 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
972 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
974 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
977 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
978 name to represent an argument passed in a register.
979 GCC uses 'P' for the same case. So if we find such a symbol pair
980 we combine it into one 'P' symbol. For Sun cc we need to do this
981 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
982 the 'p' symbol even if it never saves the argument onto the stack.
984 On most machines, we want to preserve both symbols, so that
985 we can still get information about what is going on with the
986 stack (VAX for computing args_printed, using stack slots instead
987 of saved registers in backtraces, etc.).
989 Note that this code illegally combines
990 main(argc) struct foo argc; { register struct foo argc; }
991 but this case is considered pathological and causes a warning
992 from a decent compiler. */
995 && local_symbols
->nsyms
> 0
996 #ifndef USE_REGISTER_NOT_ARG
997 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
999 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1000 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1004 struct symbol
*prev_sym
;
1005 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1006 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1007 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1008 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
1010 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1011 /* Use the type from the LOC_REGISTER; that is the type
1012 that is actually in that register. */
1013 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1014 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1019 add_symbol_to_list (sym
, &local_symbols
);
1022 add_symbol_to_list (sym
, &file_symbols
);
1026 /* Static symbol at top level of file */
1027 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1028 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1029 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1030 #ifdef STATIC_TRANSFORM_NAME
1031 if (SYMBOL_NAME (sym
)[0] == '$')
1033 struct minimal_symbol
*msym
;
1034 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1037 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1038 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1042 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1043 add_symbol_to_list (sym
, &file_symbols
);
1047 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1049 /* For a nameless type, we don't want a create a symbol, thus we
1050 did not use `sym'. Return without further processing. */
1051 if (nameless
) return NULL
;
1053 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1054 SYMBOL_VALUE (sym
) = valu
;
1055 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1056 /* C++ vagaries: we may have a type which is derived from
1057 a base type which did not have its name defined when the
1058 derived class was output. We fill in the derived class's
1059 base part member's name here in that case. */
1060 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1061 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1062 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1063 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1066 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1067 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1068 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1069 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1072 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1074 /* gcc-2.6 or later (when using -fvtable-thunks)
1075 emits a unique named type for a vtable entry.
1076 Some gdb code depends on that specific name. */
1077 extern const char vtbl_ptr_name
[];
1079 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1080 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1081 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1083 /* If we are giving a name to a type such as "pointer to
1084 foo" or "function returning foo", we better not set
1085 the TYPE_NAME. If the program contains "typedef char
1086 *caddr_t;", we don't want all variables of type char
1087 * to print as caddr_t. This is not just a
1088 consequence of GDB's type management; PCC and GCC (at
1089 least through version 2.4) both output variables of
1090 either type char * or caddr_t with the type number
1091 defined in the 't' symbol for caddr_t. If a future
1092 compiler cleans this up it GDB is not ready for it
1093 yet, but if it becomes ready we somehow need to
1094 disable this check (without breaking the PCC/GCC2.4
1099 Fortunately, this check seems not to be necessary
1100 for anything except pointers or functions. */
1103 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1106 add_symbol_to_list (sym
, &file_symbols
);
1110 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1111 by 't' which means we are typedef'ing it as well. */
1112 synonym
= *p
== 't';
1117 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1118 strlen (SYMBOL_NAME (sym
)),
1119 &objfile
-> symbol_obstack
);
1121 /* The semantics of C++ state that "struct foo { ... }" also defines
1122 a typedef for "foo". Unfortunately, cfront never makes the typedef
1123 when translating C++ into C. We make the typedef here so that
1124 "ptype foo" works as expected for cfront translated code. */
1125 else if (current_subfile
->language
== language_cplus
)
1128 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1129 strlen (SYMBOL_NAME (sym
)),
1130 &objfile
-> symbol_obstack
);
1133 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1135 /* For a nameless type, we don't want a create a symbol, thus we
1136 did not use `sym'. Return without further processing. */
1137 if (nameless
) return NULL
;
1139 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1140 SYMBOL_VALUE (sym
) = valu
;
1141 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1142 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1143 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1144 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1145 add_symbol_to_list (sym
, &file_symbols
);
1149 /* Clone the sym and then modify it. */
1150 register struct symbol
*typedef_sym
= (struct symbol
*)
1151 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1152 *typedef_sym
= *sym
;
1153 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1154 SYMBOL_VALUE (typedef_sym
) = valu
;
1155 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1156 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1157 TYPE_NAME (SYMBOL_TYPE (sym
))
1158 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1159 add_symbol_to_list (typedef_sym
, &file_symbols
);
1164 /* Static symbol of local scope */
1165 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1166 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1167 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1168 #ifdef STATIC_TRANSFORM_NAME
1169 if (SYMBOL_NAME (sym
)[0] == '$')
1171 struct minimal_symbol
*msym
;
1172 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1175 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1176 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1180 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1182 add_symbol_to_list (sym
, &global_symbols
);
1184 add_symbol_to_list (sym
, &local_symbols
);
1188 /* Reference parameter */
1189 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1190 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1191 SYMBOL_VALUE (sym
) = valu
;
1192 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1193 add_symbol_to_list (sym
, &local_symbols
);
1197 /* Reference parameter which is in a register. */
1198 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1199 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1200 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1201 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
1203 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
1204 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1206 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1207 add_symbol_to_list (sym
, &local_symbols
);
1211 /* This is used by Sun FORTRAN for "function result value".
1212 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1213 that Pascal uses it too, but when I tried it Pascal used
1214 "x:3" (local symbol) instead. */
1215 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1216 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1217 SYMBOL_VALUE (sym
) = valu
;
1218 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1219 add_symbol_to_list (sym
, &local_symbols
);
1223 SYMBOL_TYPE (sym
) = error_type (&p
);
1224 SYMBOL_CLASS (sym
) = LOC_CONST
;
1225 SYMBOL_VALUE (sym
) = 0;
1226 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1227 add_symbol_to_list (sym
, &file_symbols
);
1231 /* When passing structures to a function, some systems sometimes pass
1232 the address in a register, not the structure itself.
1234 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1235 to LOC_REGPARM_ADDR for structures and unions. */
1237 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
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_REGPARM_ADDR
;
1244 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1245 subsequent arguments on the sparc, for example). */
1246 if (SYMBOL_CLASS (sym
) == LOC_ARG
1247 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1249 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1250 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1251 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1257 /* Skip rest of this symbol and return an error type.
1259 General notes on error recovery: error_type always skips to the
1260 end of the symbol (modulo cretinous dbx symbol name continuation).
1261 Thus code like this:
1263 if (*(*pp)++ != ';')
1264 return error_type (pp);
1266 is wrong because if *pp starts out pointing at '\0' (typically as the
1267 result of an earlier error), it will be incremented to point to the
1268 start of the next symbol, which might produce strange results, at least
1269 if you run off the end of the string table. Instead use
1272 return error_type (pp);
1278 foo = error_type (pp);
1282 And in case it isn't obvious, the point of all this hair is so the compiler
1283 can define new types and new syntaxes, and old versions of the
1284 debugger will be able to read the new symbol tables. */
1286 static struct type
*
1290 complain (&error_type_complaint
);
1293 /* Skip to end of symbol. */
1294 while (**pp
!= '\0')
1299 /* Check for and handle cretinous dbx symbol name continuation! */
1300 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1302 *pp
= next_symbol_text ();
1309 return (builtin_type_error
);
1313 /* Read type information or a type definition; return the type. Even
1314 though this routine accepts either type information or a type
1315 definition, the distinction is relevant--some parts of stabsread.c
1316 assume that type information starts with a digit, '-', or '(' in
1317 deciding whether to call read_type. */
1320 read_type (pp
, objfile
)
1322 struct objfile
*objfile
;
1324 register struct type
*type
= 0;
1328 char type_descriptor
;
1330 /* Size in bits of type if specified by a type attribute, or -1 if
1331 there is no size attribute. */
1334 /* Used to distinguish string and bitstring from char-array and set. */
1337 /* Read type number if present. The type number may be omitted.
1338 for instance in a two-dimensional array declared with type
1339 "ar1;1;10;ar1;1;10;4". */
1340 if ((**pp
>= '0' && **pp
<= '9')
1344 if (read_type_number (pp
, typenums
) != 0)
1345 return error_type (pp
);
1347 /* Type is not being defined here. Either it already exists,
1348 or this is a forward reference to it. dbx_alloc_type handles
1351 return dbx_alloc_type (typenums
, objfile
);
1353 /* Type is being defined here. */
1360 /* It might be a type attribute or a member type. */
1361 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1366 /* Type attributes. */
1369 /* Skip to the semicolon. */
1370 while (*p
!= ';' && *p
!= '\0')
1374 return error_type (pp
);
1376 /* Skip the semicolon. */
1382 type_size
= atoi (attr
+ 1);
1392 /* Ignore unrecognized type attributes, so future compilers
1393 can invent new ones. */
1398 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1403 /* 'typenums=' not present, type is anonymous. Read and return
1404 the definition, but don't put it in the type vector. */
1405 typenums
[0] = typenums
[1] = -1;
1409 type_descriptor
= (*pp
)[-1];
1410 switch (type_descriptor
)
1414 enum type_code code
;
1416 /* Used to index through file_symbols. */
1417 struct pending
*ppt
;
1420 /* Name including "struct", etc. */
1424 char *from
, *to
, *p
, *q1
, *q2
;
1426 /* Set the type code according to the following letter. */
1430 code
= TYPE_CODE_STRUCT
;
1433 code
= TYPE_CODE_UNION
;
1436 code
= TYPE_CODE_ENUM
;
1440 /* Complain and keep going, so compilers can invent new
1441 cross-reference types. */
1442 static struct complaint msg
=
1443 {"Unrecognized cross-reference type `%c'", 0, 0};
1444 complain (&msg
, (*pp
)[0]);
1445 code
= TYPE_CODE_STRUCT
;
1450 q1
= strchr(*pp
, '<');
1451 p
= strchr(*pp
, ':');
1453 return error_type (pp
);
1454 while (q1
&& p
> q1
&& p
[1] == ':')
1456 q2
= strchr(q1
, '>');
1462 return error_type (pp
);
1465 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1467 /* Copy the name. */
1473 /* Set the pointer ahead of the name which we just read, and
1478 /* Now check to see whether the type has already been
1479 declared. This was written for arrays of cross-referenced
1480 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1481 sure it is not necessary anymore. But it might be a good
1482 idea, to save a little memory. */
1484 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1485 for (i
= 0; i
< ppt
->nsyms
; i
++)
1487 struct symbol
*sym
= ppt
->symbol
[i
];
1489 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1490 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1491 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1492 && STREQ (SYMBOL_NAME (sym
), type_name
))
1494 obstack_free (&objfile
-> type_obstack
, type_name
);
1495 type
= SYMBOL_TYPE (sym
);
1500 /* Didn't find the type to which this refers, so we must
1501 be dealing with a forward reference. Allocate a type
1502 structure for it, and keep track of it so we can
1503 fill in the rest of the fields when we get the full
1505 type
= dbx_alloc_type (typenums
, objfile
);
1506 TYPE_CODE (type
) = code
;
1507 TYPE_TAG_NAME (type
) = type_name
;
1508 INIT_CPLUS_SPECIFIC(type
);
1509 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1511 add_undefined_type (type
);
1515 case '-': /* RS/6000 built-in type */
1534 /* Peek ahead at the number to detect void. */
1535 if (read_type_number (pp
, xtypenums
) != 0)
1536 return error_type (pp
);
1538 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1539 /* It's being defined as itself. That means it is "void". */
1540 type
= init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
1545 /* Go back to the number and have read_type get it. This means
1546 that we can deal with something like t(1,2)=(3,4)=... which
1547 the Lucid compiler uses. */
1549 xtype
= read_type (pp
, objfile
);
1551 /* The type is being defined to another type. So we copy the type.
1552 This loses if we copy a C++ class and so we lose track of how
1553 the names are mangled (but g++ doesn't output stabs like this
1556 type
= alloc_type (objfile
);
1557 memcpy (type
, xtype
, sizeof (struct type
));
1559 /* The idea behind clearing the names is that the only purpose
1560 for defining a type to another type is so that the name of
1561 one can be different. So we probably don't need to worry much
1562 about the case where the compiler doesn't give a name to the
1564 TYPE_NAME (type
) = NULL
;
1565 TYPE_TAG_NAME (type
) = NULL
;
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
);
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
);
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
);
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
);
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 if (!TYPE_NAME (type
))
1715 TYPE_NAME (type
) = type_synonym_name
;
1717 type_synonym_name
= NULL
;
1718 switch (type_descriptor
)
1721 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1724 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1727 type
= read_struct_type (pp
, type
, objfile
);
1730 case 'a': /* Array type */
1732 return error_type (pp
);
1735 type
= dbx_alloc_type (typenums
, objfile
);
1736 type
= read_array_type (pp
, type
, objfile
);
1738 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1742 type1
= read_type (pp
, objfile
);
1743 type
= create_set_type ((struct type
*) NULL
, type1
);
1745 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1746 if (typenums
[0] != -1)
1747 *dbx_lookup_type (typenums
) = type
;
1751 --*pp
; /* Go back to the symbol in error */
1752 /* Particularly important if it was \0! */
1753 return error_type (pp
);
1758 warning ("GDB internal error, type is NULL in stabsread.c\n");
1759 return error_type (pp
);
1762 /* Size specified in a type attribute overrides any other size. */
1763 if (type_size
!= -1)
1764 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1769 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1770 Return the proper type node for a given builtin type number. */
1772 static struct type
*
1773 rs6000_builtin_type (typenum
)
1776 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1777 #define NUMBER_RECOGNIZED 34
1778 /* This includes an empty slot for type number -0. */
1779 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1780 struct type
*rettype
= NULL
;
1782 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1784 complain (&rs6000_builtin_complaint
, typenum
);
1785 return builtin_type_error
;
1787 if (negative_types
[-typenum
] != NULL
)
1788 return negative_types
[-typenum
];
1790 #if TARGET_CHAR_BIT != 8
1791 #error This code wrong for TARGET_CHAR_BIT not 8
1792 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1793 that if that ever becomes not true, the correct fix will be to
1794 make the size in the struct type to be in bits, not in units of
1801 /* The size of this and all the other types are fixed, defined
1802 by the debugging format. If there is a type called "int" which
1803 is other than 32 bits, then it should use a new negative type
1804 number (or avoid negative type numbers for that case).
1805 See stabs.texinfo. */
1806 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1809 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1812 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1815 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1818 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1819 "unsigned char", NULL
);
1822 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1825 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1826 "unsigned short", NULL
);
1829 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1830 "unsigned int", NULL
);
1833 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1836 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1837 "unsigned long", NULL
);
1840 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1843 /* IEEE single precision (32 bit). */
1844 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1847 /* IEEE double precision (64 bit). */
1848 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1851 /* This is an IEEE double on the RS/6000, and different machines with
1852 different sizes for "long double" should use different negative
1853 type numbers. See stabs.texinfo. */
1854 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1857 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1860 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1863 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1866 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1869 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1872 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1876 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1880 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1884 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1888 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1892 /* Complex type consisting of two IEEE single precision values. */
1893 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1896 /* Complex type consisting of two IEEE double precision values. */
1897 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1900 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1903 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1906 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1909 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1912 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1915 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1916 "unsigned long long", NULL
);
1919 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1923 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1926 negative_types
[-typenum
] = rettype
;
1930 /* This page contains subroutines of read_type. */
1932 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1933 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1934 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1935 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1937 /* Read member function stabs info for C++ classes. The form of each member
1940 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1942 An example with two member functions is:
1944 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1946 For the case of overloaded operators, the format is op$::*.funcs, where
1947 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1948 name (such as `+=') and `.' marks the end of the operator name.
1950 Returns 1 for success, 0 for failure. */
1953 read_member_functions (fip
, pp
, type
, objfile
)
1954 struct field_info
*fip
;
1957 struct objfile
*objfile
;
1961 /* Total number of member functions defined in this class. If the class
1962 defines two `f' functions, and one `g' function, then this will have
1964 int total_length
= 0;
1968 struct next_fnfield
*next
;
1969 struct fn_field fn_field
;
1971 struct type
*look_ahead_type
;
1972 struct next_fnfieldlist
*new_fnlist
;
1973 struct next_fnfield
*new_sublist
;
1977 /* Process each list until we find something that is not a member function
1978 or find the end of the functions. */
1982 /* We should be positioned at the start of the function name.
1983 Scan forward to find the first ':' and if it is not the
1984 first of a "::" delimiter, then this is not a member function. */
1996 look_ahead_type
= NULL
;
1999 new_fnlist
= (struct next_fnfieldlist
*)
2000 xmalloc (sizeof (struct next_fnfieldlist
));
2001 make_cleanup (free
, new_fnlist
);
2002 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2004 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
2006 /* This is a completely wierd case. In order to stuff in the
2007 names that might contain colons (the usual name delimiter),
2008 Mike Tiemann defined a different name format which is
2009 signalled if the identifier is "op$". In that case, the
2010 format is "op$::XXXX." where XXXX is the name. This is
2011 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2012 /* This lets the user type "break operator+".
2013 We could just put in "+" as the name, but that wouldn't
2015 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
2016 char *o
= opname
+ 3;
2018 /* Skip past '::'. */
2021 STABS_CONTINUE (pp
);
2027 main_fn_name
= savestring (opname
, o
- opname
);
2033 main_fn_name
= savestring (*pp
, p
- *pp
);
2034 /* Skip past '::'. */
2037 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2042 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2043 make_cleanup (free
, new_sublist
);
2044 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2046 /* Check for and handle cretinous dbx symbol name continuation! */
2047 if (look_ahead_type
== NULL
)
2050 STABS_CONTINUE (pp
);
2052 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2055 /* Invalid symtab info for member function. */
2061 /* g++ version 1 kludge */
2062 new_sublist
-> fn_field
.type
= look_ahead_type
;
2063 look_ahead_type
= NULL
;
2073 /* If this is just a stub, then we don't have the real name here. */
2075 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2077 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2078 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2079 new_sublist
-> fn_field
.is_stub
= 1;
2081 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2084 /* Set this member function's visibility fields. */
2087 case VISIBILITY_PRIVATE
:
2088 new_sublist
-> fn_field
.is_private
= 1;
2090 case VISIBILITY_PROTECTED
:
2091 new_sublist
-> fn_field
.is_protected
= 1;
2095 STABS_CONTINUE (pp
);
2098 case 'A': /* Normal functions. */
2099 new_sublist
-> fn_field
.is_const
= 0;
2100 new_sublist
-> fn_field
.is_volatile
= 0;
2103 case 'B': /* `const' member functions. */
2104 new_sublist
-> fn_field
.is_const
= 1;
2105 new_sublist
-> fn_field
.is_volatile
= 0;
2108 case 'C': /* `volatile' member function. */
2109 new_sublist
-> fn_field
.is_const
= 0;
2110 new_sublist
-> fn_field
.is_volatile
= 1;
2113 case 'D': /* `const volatile' member function. */
2114 new_sublist
-> fn_field
.is_const
= 1;
2115 new_sublist
-> fn_field
.is_volatile
= 1;
2118 case '*': /* File compiled with g++ version 1 -- no info */
2123 complain (&const_vol_complaint
, **pp
);
2132 /* virtual member function, followed by index.
2133 The sign bit is set to distinguish pointers-to-methods
2134 from virtual function indicies. Since the array is
2135 in words, the quantity must be shifted left by 1
2136 on 16 bit machine, and by 2 on 32 bit machine, forcing
2137 the sign bit out, and usable as a valid index into
2138 the array. Remove the sign bit here. */
2139 new_sublist
-> fn_field
.voffset
=
2140 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2144 STABS_CONTINUE (pp
);
2145 if (**pp
== ';' || **pp
== '\0')
2147 /* Must be g++ version 1. */
2148 new_sublist
-> fn_field
.fcontext
= 0;
2152 /* Figure out from whence this virtual function came.
2153 It may belong to virtual function table of
2154 one of its baseclasses. */
2155 look_ahead_type
= read_type (pp
, objfile
);
2158 /* g++ version 1 overloaded methods. */
2162 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2171 look_ahead_type
= NULL
;
2177 /* static member function. */
2178 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2179 if (strncmp (new_sublist
-> fn_field
.physname
,
2180 main_fn_name
, strlen (main_fn_name
)))
2182 new_sublist
-> fn_field
.is_stub
= 1;
2188 complain (&member_fn_complaint
, (*pp
)[-1]);
2189 /* Fall through into normal member function. */
2192 /* normal member function. */
2193 new_sublist
-> fn_field
.voffset
= 0;
2194 new_sublist
-> fn_field
.fcontext
= 0;
2198 new_sublist
-> next
= sublist
;
2199 sublist
= new_sublist
;
2201 STABS_CONTINUE (pp
);
2203 while (**pp
!= ';' && **pp
!= '\0');
2207 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2208 obstack_alloc (&objfile
-> type_obstack
,
2209 sizeof (struct fn_field
) * length
);
2210 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2211 sizeof (struct fn_field
) * length
);
2212 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2214 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2217 new_fnlist
-> fn_fieldlist
.length
= length
;
2218 new_fnlist
-> next
= fip
-> fnlist
;
2219 fip
-> fnlist
= new_fnlist
;
2221 total_length
+= length
;
2222 STABS_CONTINUE (pp
);
2227 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2228 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2229 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2230 memset (TYPE_FN_FIELDLISTS (type
), 0,
2231 sizeof (struct fn_fieldlist
) * nfn_fields
);
2232 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2233 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2239 /* Special GNU C++ name.
2241 Returns 1 for success, 0 for failure. "failure" means that we can't
2242 keep parsing and it's time for error_type(). */
2245 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2246 struct field_info
*fip
;
2249 struct objfile
*objfile
;
2254 struct type
*context
;
2264 /* At this point, *pp points to something like "22:23=*22...",
2265 where the type number before the ':' is the "context" and
2266 everything after is a regular type definition. Lookup the
2267 type, find it's name, and construct the field name. */
2269 context
= read_type (pp
, objfile
);
2273 case 'f': /* $vf -- a virtual function table pointer */
2274 fip
->list
->field
.name
=
2275 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2278 case 'b': /* $vb -- a virtual bsomethingorother */
2279 name
= type_name_no_tag (context
);
2282 complain (&invalid_cpp_type_complaint
, symnum
);
2285 fip
->list
->field
.name
=
2286 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2290 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2291 fip
->list
->field
.name
=
2292 obconcat (&objfile
->type_obstack
,
2293 "INVALID_CPLUSPLUS_ABBREV", "", "");
2297 /* At this point, *pp points to the ':'. Skip it and read the
2303 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2306 fip
->list
->field
.type
= read_type (pp
, objfile
);
2308 (*pp
)++; /* Skip the comma. */
2314 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2318 /* This field is unpacked. */
2319 fip
->list
->field
.bitsize
= 0;
2320 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2324 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2325 /* We have no idea what syntax an unrecognized abbrev would have, so
2326 better return 0. If we returned 1, we would need to at least advance
2327 *pp to avoid an infinite loop. */
2334 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2335 struct field_info
*fip
;
2339 struct objfile
*objfile
;
2341 fip
-> list
-> field
.name
=
2342 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2345 /* This means we have a visibility for a field coming. */
2349 fip
-> list
-> visibility
= *(*pp
)++;
2353 /* normal dbx-style format, no explicit visibility */
2354 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2357 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2362 /* Possible future hook for nested types. */
2365 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2371 /* Static class member. */
2372 fip
-> list
-> field
.bitpos
= (long) -1;
2378 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2382 else if (**pp
!= ',')
2384 /* Bad structure-type format. */
2385 complain (&stabs_general_complaint
, "bad structure-type format");
2389 (*pp
)++; /* Skip the comma. */
2393 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2396 complain (&stabs_general_complaint
, "bad structure-type format");
2399 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2402 complain (&stabs_general_complaint
, "bad structure-type format");
2407 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2409 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2410 it is a field which has been optimized out. The correct stab for
2411 this case is to use VISIBILITY_IGNORE, but that is a recent
2412 invention. (2) It is a 0-size array. For example
2413 union { int num; char str[0]; } foo. Printing "<no value>" for
2414 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2415 will continue to work, and a 0-size array as a whole doesn't
2416 have any contents to print.
2418 I suspect this probably could also happen with gcc -gstabs (not
2419 -gstabs+) for static fields, and perhaps other C++ extensions.
2420 Hopefully few people use -gstabs with gdb, since it is intended
2421 for dbx compatibility. */
2423 /* Ignore this field. */
2424 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2428 /* Detect an unpacked field and mark it as such.
2429 dbx gives a bit size for all fields.
2430 Note that forward refs cannot be packed,
2431 and treat enums as if they had the width of ints. */
2433 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2434 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2436 fip
-> list
-> field
.bitsize
= 0;
2438 if ((fip
-> list
-> field
.bitsize
2439 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2440 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2441 && (fip
-> list
-> field
.bitsize
2446 fip
-> list
-> field
.bitpos
% 8 == 0)
2448 fip
-> list
-> field
.bitsize
= 0;
2454 /* Read struct or class data fields. They have the form:
2456 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2458 At the end, we see a semicolon instead of a field.
2460 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2463 The optional VISIBILITY is one of:
2465 '/0' (VISIBILITY_PRIVATE)
2466 '/1' (VISIBILITY_PROTECTED)
2467 '/2' (VISIBILITY_PUBLIC)
2468 '/9' (VISIBILITY_IGNORE)
2470 or nothing, for C style fields with public visibility.
2472 Returns 1 for success, 0 for failure. */
2475 read_struct_fields (fip
, pp
, type
, objfile
)
2476 struct field_info
*fip
;
2479 struct objfile
*objfile
;
2482 struct nextfield
*new;
2484 /* We better set p right now, in case there are no fields at all... */
2488 /* Read each data member type until we find the terminating ';' at the end of
2489 the data member list, or break for some other reason such as finding the
2490 start of the member function list. */
2494 if (os9k_stabs
&& **pp
== ',') break;
2495 STABS_CONTINUE (pp
);
2496 /* Get space to record the next field's data. */
2497 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2498 make_cleanup (free
, new);
2499 memset (new, 0, sizeof (struct nextfield
));
2500 new -> next
= fip
-> list
;
2503 /* Get the field name. */
2506 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2507 unless the CPLUS_MARKER is followed by an underscore, in
2508 which case it is just the name of an anonymous type, which we
2509 should handle like any other type name. We accept either '$'
2510 or '.', because a field name can never contain one of these
2511 characters except as a CPLUS_MARKER (we probably should be
2512 doing that in most parts of GDB). */
2514 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2516 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2521 /* Look for the ':' that separates the field name from the field
2522 values. Data members are delimited by a single ':', while member
2523 functions are delimited by a pair of ':'s. When we hit the member
2524 functions (if any), terminate scan loop and return. */
2526 while (*p
!= ':' && *p
!= '\0')
2533 /* Check to see if we have hit the member functions yet. */
2538 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2540 if (p
[0] == ':' && p
[1] == ':')
2542 /* chill the list of fields: the last entry (at the head) is a
2543 partially constructed entry which we now scrub. */
2544 fip
-> list
= fip
-> list
-> next
;
2549 /* The stabs for C++ derived classes contain baseclass information which
2550 is marked by a '!' character after the total size. This function is
2551 called when we encounter the baseclass marker, and slurps up all the
2552 baseclass information.
2554 Immediately following the '!' marker is the number of base classes that
2555 the class is derived from, followed by information for each base class.
2556 For each base class, there are two visibility specifiers, a bit offset
2557 to the base class information within the derived class, a reference to
2558 the type for the base class, and a terminating semicolon.
2560 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2562 Baseclass information marker __________________|| | | | | | |
2563 Number of baseclasses __________________________| | | | | | |
2564 Visibility specifiers (2) ________________________| | | | | |
2565 Offset in bits from start of class _________________| | | | |
2566 Type number for base class ___________________________| | | |
2567 Visibility specifiers (2) _______________________________| | |
2568 Offset in bits from start of class ________________________| |
2569 Type number of base class ____________________________________|
2571 Return 1 for success, 0 for (error-type-inducing) failure. */
2574 read_baseclasses (fip
, pp
, type
, objfile
)
2575 struct field_info
*fip
;
2578 struct objfile
*objfile
;
2581 struct nextfield
*new;
2589 /* Skip the '!' baseclass information marker. */
2593 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2596 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2602 /* Some stupid compilers have trouble with the following, so break
2603 it up into simpler expressions. */
2604 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2605 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2608 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2611 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2612 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2616 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2618 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2620 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2621 make_cleanup (free
, new);
2622 memset (new, 0, sizeof (struct nextfield
));
2623 new -> next
= fip
-> list
;
2625 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2627 STABS_CONTINUE (pp
);
2631 /* Nothing to do. */
2634 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2637 /* Unknown character. Complain and treat it as non-virtual. */
2639 static struct complaint msg
= {
2640 "Unknown virtual character `%c' for baseclass", 0, 0};
2641 complain (&msg
, **pp
);
2646 new -> visibility
= *(*pp
)++;
2647 switch (new -> visibility
)
2649 case VISIBILITY_PRIVATE
:
2650 case VISIBILITY_PROTECTED
:
2651 case VISIBILITY_PUBLIC
:
2654 /* Bad visibility format. Complain and treat it as
2657 static struct complaint msg
= {
2658 "Unknown visibility `%c' for baseclass", 0, 0};
2659 complain (&msg
, new -> visibility
);
2660 new -> visibility
= VISIBILITY_PUBLIC
;
2667 /* The remaining value is the bit offset of the portion of the object
2668 corresponding to this baseclass. Always zero in the absence of
2669 multiple inheritance. */
2671 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2676 /* The last piece of baseclass information is the type of the
2677 base class. Read it, and remember it's type name as this
2680 new -> field
.type
= read_type (pp
, objfile
);
2681 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2683 /* skip trailing ';' and bump count of number of fields seen */
2692 /* The tail end of stabs for C++ classes that contain a virtual function
2693 pointer contains a tilde, a %, and a type number.
2694 The type number refers to the base class (possibly this class itself) which
2695 contains the vtable pointer for the current class.
2697 This function is called when we have parsed all the method declarations,
2698 so we can look for the vptr base class info. */
2701 read_tilde_fields (fip
, pp
, type
, objfile
)
2702 struct field_info
*fip
;
2705 struct objfile
*objfile
;
2709 STABS_CONTINUE (pp
);
2711 /* If we are positioned at a ';', then skip it. */
2721 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2723 /* Obsolete flags that used to indicate the presence
2724 of constructors and/or destructors. */
2728 /* Read either a '%' or the final ';'. */
2729 if (*(*pp
)++ == '%')
2731 /* The next number is the type number of the base class
2732 (possibly our own class) which supplies the vtable for
2733 this class. Parse it out, and search that class to find
2734 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2735 and TYPE_VPTR_FIELDNO. */
2740 t
= read_type (pp
, objfile
);
2742 while (*p
!= '\0' && *p
!= ';')
2748 /* Premature end of symbol. */
2752 TYPE_VPTR_BASETYPE (type
) = t
;
2753 if (type
== t
) /* Our own class provides vtbl ptr */
2755 for (i
= TYPE_NFIELDS (t
) - 1;
2756 i
>= TYPE_N_BASECLASSES (t
);
2759 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2760 sizeof (vptr_name
) - 1))
2762 TYPE_VPTR_FIELDNO (type
) = i
;
2766 /* Virtual function table field not found. */
2767 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2772 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2783 attach_fn_fields_to_type (fip
, type
)
2784 struct field_info
*fip
;
2785 register struct type
*type
;
2789 for (n
= TYPE_NFN_FIELDS (type
);
2790 fip
-> fnlist
!= NULL
;
2791 fip
-> fnlist
= fip
-> fnlist
-> next
)
2793 --n
; /* Circumvent Sun3 compiler bug */
2794 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2799 /* Create the vector of fields, and record how big it is.
2800 We need this info to record proper virtual function table information
2801 for this class's virtual functions. */
2804 attach_fields_to_type (fip
, type
, objfile
)
2805 struct field_info
*fip
;
2806 register struct type
*type
;
2807 struct objfile
*objfile
;
2809 register int nfields
= 0;
2810 register int non_public_fields
= 0;
2811 register struct nextfield
*scan
;
2813 /* Count up the number of fields that we have, as well as taking note of
2814 whether or not there are any non-public fields, which requires us to
2815 allocate and build the private_field_bits and protected_field_bits
2818 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2821 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2823 non_public_fields
++;
2827 /* Now we know how many fields there are, and whether or not there are any
2828 non-public fields. Record the field count, allocate space for the
2829 array of fields, and create blank visibility bitfields if necessary. */
2831 TYPE_NFIELDS (type
) = nfields
;
2832 TYPE_FIELDS (type
) = (struct field
*)
2833 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2834 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2836 if (non_public_fields
)
2838 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2840 TYPE_FIELD_PRIVATE_BITS (type
) =
2841 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2842 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2844 TYPE_FIELD_PROTECTED_BITS (type
) =
2845 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2846 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2848 TYPE_FIELD_IGNORE_BITS (type
) =
2849 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2850 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2853 /* Copy the saved-up fields into the field vector. Start from the head
2854 of the list, adding to the tail of the field array, so that they end
2855 up in the same order in the array in which they were added to the list. */
2857 while (nfields
-- > 0)
2859 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2860 switch (fip
-> list
-> visibility
)
2862 case VISIBILITY_PRIVATE
:
2863 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2866 case VISIBILITY_PROTECTED
:
2867 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2870 case VISIBILITY_IGNORE
:
2871 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2874 case VISIBILITY_PUBLIC
:
2878 /* Unknown visibility. Complain and treat it as public. */
2880 static struct complaint msg
= {
2881 "Unknown visibility `%c' for field", 0, 0};
2882 complain (&msg
, fip
-> list
-> visibility
);
2886 fip
-> list
= fip
-> list
-> next
;
2891 /* Read the description of a structure (or union type) and return an object
2892 describing the type.
2894 PP points to a character pointer that points to the next unconsumed token
2895 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2896 *PP will point to "4a:1,0,32;;".
2898 TYPE points to an incomplete type that needs to be filled in.
2900 OBJFILE points to the current objfile from which the stabs information is
2901 being read. (Note that it is redundant in that TYPE also contains a pointer
2902 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2905 static struct type
*
2906 read_struct_type (pp
, type
, objfile
)
2909 struct objfile
*objfile
;
2911 struct cleanup
*back_to
;
2912 struct field_info fi
;
2917 back_to
= make_cleanup (null_cleanup
, 0);
2919 INIT_CPLUS_SPECIFIC (type
);
2920 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2922 /* First comes the total size in bytes. */
2926 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2928 return error_type (pp
);
2931 /* Now read the baseclasses, if any, read the regular C struct or C++
2932 class member fields, attach the fields to the type, read the C++
2933 member functions, attach them to the type, and then read any tilde
2934 field (baseclass specifier for the class holding the main vtable). */
2936 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2937 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2938 || !attach_fields_to_type (&fi
, type
, objfile
)
2939 || !read_member_functions (&fi
, pp
, type
, objfile
)
2940 || !attach_fn_fields_to_type (&fi
, type
)
2941 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2943 do_cleanups (back_to
);
2944 return (error_type (pp
));
2947 do_cleanups (back_to
);
2951 /* Read a definition of an array type,
2952 and create and return a suitable type object.
2953 Also creates a range type which represents the bounds of that
2956 static struct type
*
2957 read_array_type (pp
, type
, objfile
)
2959 register struct type
*type
;
2960 struct objfile
*objfile
;
2962 struct type
*index_type
, *element_type
, *range_type
;
2967 /* Format of an array type:
2968 "ar<index type>;lower;upper;<array_contents_type>".
2969 OS9000: "arlower,upper;<array_contents_type>".
2971 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2972 for these, produce a type like float[][]. */
2975 index_type
= builtin_type_int
;
2978 index_type
= read_type (pp
, objfile
);
2980 /* Improper format of array type decl. */
2981 return error_type (pp
);
2985 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2990 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
2992 return error_type (pp
);
2994 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2999 upper
= read_huge_number (pp
, ';', &nbits
);
3001 return error_type (pp
);
3003 element_type
= read_type (pp
, objfile
);
3012 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3013 type
= create_array_type (type
, element_type
, range_type
);
3015 /* If we have an array whose element type is not yet known, but whose
3016 bounds *are* known, record it to be adjusted at the end of the file. */
3018 if ((TYPE_FLAGS (element_type
) & TYPE_FLAG_STUB
) && !adjustable
)
3020 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
3021 add_undefined_type (type
);
3028 /* Read a definition of an enumeration type,
3029 and create and return a suitable type object.
3030 Also defines the symbols that represent the values of the type. */
3032 static struct type
*
3033 read_enum_type (pp
, type
, objfile
)
3035 register struct type
*type
;
3036 struct objfile
*objfile
;
3041 register struct symbol
*sym
;
3043 struct pending
**symlist
;
3044 struct pending
*osyms
, *syms
;
3049 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3050 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3051 to do? For now, force all enum values to file scope. */
3052 if (within_function
)
3053 symlist
= &local_symbols
;
3056 symlist
= &file_symbols
;
3058 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3062 /* Size. Perhaps this does not have to be conditionalized on
3063 os9k_stabs (assuming the name of an enum constant can't start
3065 read_huge_number (pp
, 0, &nbits
);
3067 return error_type (pp
);
3070 /* Read the value-names and their values.
3071 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3072 A semicolon or comma instead of a NAME means the end. */
3073 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3075 STABS_CONTINUE (pp
);
3077 while (*p
!= ':') p
++;
3078 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3080 n
= read_huge_number (pp
, ',', &nbits
);
3082 return error_type (pp
);
3084 sym
= (struct symbol
*)
3085 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3086 memset (sym
, 0, sizeof (struct symbol
));
3087 SYMBOL_NAME (sym
) = name
;
3088 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3089 SYMBOL_CLASS (sym
) = LOC_CONST
;
3090 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3091 SYMBOL_VALUE (sym
) = n
;
3092 add_symbol_to_list (sym
, symlist
);
3097 (*pp
)++; /* Skip the semicolon. */
3099 /* Now fill in the fields of the type-structure. */
3101 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3102 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3103 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3104 TYPE_NFIELDS (type
) = nsyms
;
3105 TYPE_FIELDS (type
) = (struct field
*)
3106 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3107 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3109 /* Find the symbols for the values and put them into the type.
3110 The symbols can be found in the symlist that we put them on
3111 to cause them to be defined. osyms contains the old value
3112 of that symlist; everything up to there was defined by us. */
3113 /* Note that we preserve the order of the enum constants, so
3114 that in something like "enum {FOO, LAST_THING=FOO}" we print
3115 FOO, not LAST_THING. */
3117 for (syms
= *symlist
, n
= nsyms
- 1; ; syms
= syms
->next
)
3119 int last
= syms
== osyms
? o_nsyms
: 0;
3120 int j
= syms
->nsyms
;
3121 for (; --j
>= last
; --n
)
3123 struct symbol
*xsym
= syms
->symbol
[j
];
3124 SYMBOL_TYPE (xsym
) = type
;
3125 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3126 TYPE_FIELD_VALUE (type
, n
) = 0;
3127 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3128 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3137 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3138 typedefs in every file (for int, long, etc):
3140 type = b <signed> <width>; <offset>; <nbits>
3141 signed = u or s. Possible c in addition to u or s (for char?).
3142 offset = offset from high order bit to start bit of type.
3143 width is # bytes in object of this type, nbits is # bits in type.
3145 The width/offset stuff appears to be for small objects stored in
3146 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3149 static struct type
*
3150 read_sun_builtin_type (pp
, typenums
, objfile
)
3153 struct objfile
*objfile
;
3168 return error_type (pp
);
3172 /* For some odd reason, all forms of char put a c here. This is strange
3173 because no other type has this honor. We can safely ignore this because
3174 we actually determine 'char'acterness by the number of bits specified in
3180 /* The first number appears to be the number of bytes occupied
3181 by this type, except that unsigned short is 4 instead of 2.
3182 Since this information is redundant with the third number,
3183 we will ignore it. */
3184 read_huge_number (pp
, ';', &nbits
);
3186 return error_type (pp
);
3188 /* The second number is always 0, so ignore it too. */
3189 read_huge_number (pp
, ';', &nbits
);
3191 return error_type (pp
);
3193 /* The third number is the number of bits for this type. */
3194 type_bits
= read_huge_number (pp
, 0, &nbits
);
3196 return error_type (pp
);
3197 /* The type *should* end with a semicolon. If it are embedded
3198 in a larger type the semicolon may be the only way to know where
3199 the type ends. If this type is at the end of the stabstring we
3200 can deal with the omitted semicolon (but we don't have to like
3201 it). Don't bother to complain(), Sun's compiler omits the semicolon
3207 return init_type (TYPE_CODE_VOID
, 1,
3208 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3211 return init_type (TYPE_CODE_INT
,
3212 type_bits
/ TARGET_CHAR_BIT
,
3213 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3217 static struct type
*
3218 read_sun_floating_type (pp
, typenums
, objfile
)
3221 struct objfile
*objfile
;
3227 /* The first number has more details about the type, for example
3229 details
= read_huge_number (pp
, ';', &nbits
);
3231 return error_type (pp
);
3233 /* The second number is the number of bytes occupied by this type */
3234 nbytes
= read_huge_number (pp
, ';', &nbits
);
3236 return error_type (pp
);
3238 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3239 || details
== NF_COMPLEX32
)
3240 /* This is a type we can't handle, but we do know the size.
3241 We also will be able to give it a name. */
3242 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3244 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3247 /* Read a number from the string pointed to by *PP.
3248 The value of *PP is advanced over the number.
3249 If END is nonzero, the character that ends the
3250 number must match END, or an error happens;
3251 and that character is skipped if it does match.
3252 If END is zero, *PP is left pointing to that character.
3254 If the number fits in a long, set *BITS to 0 and return the value.
3255 If not, set *BITS to be the number of bits in the number and return 0.
3257 If encounter garbage, set *BITS to -1 and return 0. */
3260 read_huge_number (pp
, end
, bits
)
3280 /* Leading zero means octal. GCC uses this to output values larger
3281 than an int (because that would be hard in decimal). */
3289 upper_limit
= ULONG_MAX
/ radix
;
3291 upper_limit
= LONG_MAX
/ radix
;
3293 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3295 if (n
<= upper_limit
)
3298 n
+= c
- '0'; /* FIXME this overflows anyway */
3303 /* This depends on large values being output in octal, which is
3310 /* Ignore leading zeroes. */
3314 else if (c
== '2' || c
== '3')
3340 /* Large decimal constants are an error (because it is hard to
3341 count how many bits are in them). */
3347 /* -0x7f is the same as 0x80. So deal with it by adding one to
3348 the number of bits. */
3360 /* It's *BITS which has the interesting information. */
3364 static struct type
*
3365 read_range_type (pp
, typenums
, objfile
)
3368 struct objfile
*objfile
;
3374 struct type
*result_type
;
3375 struct type
*index_type
;
3377 /* First comes a type we are a subrange of.
3378 In C it is usually 0, 1 or the type being defined. */
3379 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3380 not just a type number. */
3381 if (read_type_number (pp
, rangenums
) != 0)
3382 return error_type (pp
);
3383 self_subrange
= (rangenums
[0] == typenums
[0] &&
3384 rangenums
[1] == typenums
[1]);
3386 /* A semicolon should now follow; skip it. */
3390 /* The remaining two operands are usually lower and upper bounds
3391 of the range. But in some special cases they mean something else. */
3392 n2
= read_huge_number (pp
, ';', &n2bits
);
3393 n3
= read_huge_number (pp
, ';', &n3bits
);
3395 if (n2bits
== -1 || n3bits
== -1)
3396 return error_type (pp
);
3398 /* If limits are huge, must be large integral type. */
3399 if (n2bits
!= 0 || n3bits
!= 0)
3401 char got_signed
= 0;
3402 char got_unsigned
= 0;
3403 /* Number of bits in the type. */
3406 /* Range from 0 to <large number> is an unsigned large integral type. */
3407 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3412 /* Range from <large number> to <large number>-1 is a large signed
3413 integral type. Take care of the case where <large number> doesn't
3414 fit in a long but <large number>-1 does. */
3415 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3416 || (n2bits
!= 0 && n3bits
== 0
3417 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3424 if (got_signed
|| got_unsigned
)
3426 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3427 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3431 return error_type (pp
);
3434 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3435 if (self_subrange
&& n2
== 0 && n3
== 0)
3436 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3438 /* If n3 is zero and n2 is not, we want a floating type,
3439 and n2 is the width in bytes.
3441 Fortran programs appear to use this for complex types also,
3442 and they give no way to distinguish between double and single-complex!
3444 GDB does not have complex types.
3446 Just return the complex as a float of that size. It won't work right
3447 for the complex values, but at least it makes the file loadable. */
3449 if (n3
== 0 && n2
> 0)
3451 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3454 /* If the upper bound is -1, it must really be an unsigned int. */
3456 else if (n2
== 0 && n3
== -1)
3458 /* It is unsigned int or unsigned long. */
3459 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3460 compatibility hack. */
3461 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3462 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3465 /* Special case: char is defined (Who knows why) as a subrange of
3466 itself with range 0-127. */
3467 else if (self_subrange
&& n2
== 0 && n3
== 127)
3468 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3470 /* We used to do this only for subrange of self or subrange of int. */
3474 /* n3 actually gives the size. */
3475 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3478 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3480 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3482 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3483 "unsigned long", and we already checked for that,
3484 so don't need to test for it here. */
3486 /* I think this is for Convex "long long". Since I don't know whether
3487 Convex sets self_subrange, I also accept that particular size regardless
3488 of self_subrange. */
3489 else if (n3
== 0 && n2
< 0
3491 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3492 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3493 else if (n2
== -n3
-1)
3496 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3498 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3499 if (n3
== 0x7fffffff)
3500 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3503 /* We have a real range type on our hands. Allocate space and
3504 return a real pointer. */
3506 /* At this point I don't have the faintest idea how to deal with
3507 a self_subrange type; I'm going to assume that this is used
3508 as an idiom, and that all of them are special cases. So . . . */
3510 return error_type (pp
);
3512 index_type
= *dbx_lookup_type (rangenums
);
3513 if (index_type
== NULL
)
3515 /* Does this actually ever happen? Is that why we are worrying
3516 about dealing with it rather than just calling error_type? */
3518 static struct type
*range_type_index
;
3520 complain (&range_type_base_complaint
, rangenums
[1]);
3521 if (range_type_index
== NULL
)
3523 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3524 0, "range type index type", NULL
);
3525 index_type
= range_type_index
;
3528 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3529 return (result_type
);
3532 /* Read in an argument list. This is a list of types, separated by commas
3533 and terminated with END. Return the list of types read in, or (struct type
3534 **)-1 if there is an error. */
3536 static struct type
**
3537 read_args (pp
, end
, objfile
)
3540 struct objfile
*objfile
;
3542 /* FIXME! Remove this arbitrary limit! */
3543 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3549 /* Invalid argument list: no ','. */
3550 return (struct type
**)-1;
3552 STABS_CONTINUE (pp
);
3553 types
[n
++] = read_type (pp
, objfile
);
3555 (*pp
)++; /* get past `end' (the ':' character) */
3559 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3561 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3563 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3564 memset (rval
+ n
, 0, sizeof (struct type
*));
3568 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3570 memcpy (rval
, types
, n
* sizeof (struct type
*));
3574 /* Common block handling. */
3576 /* List of symbols declared since the last BCOMM. This list is a tail
3577 of local_symbols. When ECOMM is seen, the symbols on the list
3578 are noted so their proper addresses can be filled in later,
3579 using the common block base address gotten from the assembler
3582 static struct pending
*common_block
;
3583 static int common_block_i
;
3585 /* Name of the current common block. We get it from the BCOMM instead of the
3586 ECOMM to match IBM documentation (even though IBM puts the name both places
3587 like everyone else). */
3588 static char *common_block_name
;
3590 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3591 to remain after this function returns. */
3594 common_block_start (name
, objfile
)
3596 struct objfile
*objfile
;
3598 if (common_block_name
!= NULL
)
3600 static struct complaint msg
= {
3601 "Invalid symbol data: common block within common block",
3605 common_block
= local_symbols
;
3606 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3607 common_block_name
= obsavestring (name
, strlen (name
),
3608 &objfile
-> symbol_obstack
);
3611 /* Process a N_ECOMM symbol. */
3614 common_block_end (objfile
)
3615 struct objfile
*objfile
;
3617 /* Symbols declared since the BCOMM are to have the common block
3618 start address added in when we know it. common_block and
3619 common_block_i point to the first symbol after the BCOMM in
3620 the local_symbols list; copy the list and hang it off the
3621 symbol for the common block name for later fixup. */
3624 struct pending
*new = 0;
3625 struct pending
*next
;
3628 if (common_block_name
== NULL
)
3630 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3635 sym
= (struct symbol
*)
3636 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3637 memset (sym
, 0, sizeof (struct symbol
));
3638 SYMBOL_NAME (sym
) = common_block_name
;
3639 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3641 /* Now we copy all the symbols which have been defined since the BCOMM. */
3643 /* Copy all the struct pendings before common_block. */
3644 for (next
= local_symbols
;
3645 next
!= NULL
&& next
!= common_block
;
3648 for (j
= 0; j
< next
->nsyms
; j
++)
3649 add_symbol_to_list (next
->symbol
[j
], &new);
3652 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3653 NULL, it means copy all the local symbols (which we already did
3656 if (common_block
!= NULL
)
3657 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3658 add_symbol_to_list (common_block
->symbol
[j
], &new);
3660 SYMBOL_TYPE (sym
) = (struct type
*) new;
3662 /* Should we be putting local_symbols back to what it was?
3665 i
= hashname (SYMBOL_NAME (sym
));
3666 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3667 global_sym_chain
[i
] = sym
;
3668 common_block_name
= NULL
;
3671 /* Add a common block's start address to the offset of each symbol
3672 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3673 the common block name). */
3676 fix_common_block (sym
, valu
)
3680 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3681 for ( ; next
; next
= next
->next
)
3684 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3685 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3691 /* What about types defined as forward references inside of a small lexical
3693 /* Add a type to the list of undefined types to be checked through
3694 once this file has been read in. */
3697 add_undefined_type (type
)
3700 if (undef_types_length
== undef_types_allocated
)
3702 undef_types_allocated
*= 2;
3703 undef_types
= (struct type
**)
3704 xrealloc ((char *) undef_types
,
3705 undef_types_allocated
* sizeof (struct type
*));
3707 undef_types
[undef_types_length
++] = type
;
3710 /* Go through each undefined type, see if it's still undefined, and fix it
3711 up if possible. We have two kinds of undefined types:
3713 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3714 Fix: update array length using the element bounds
3715 and the target type's length.
3716 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3717 yet defined at the time a pointer to it was made.
3718 Fix: Do a full lookup on the struct/union tag. */
3720 cleanup_undefined_types ()
3724 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3726 switch (TYPE_CODE (*type
))
3729 case TYPE_CODE_STRUCT
:
3730 case TYPE_CODE_UNION
:
3731 case TYPE_CODE_ENUM
:
3733 /* Check if it has been defined since. Need to do this here
3734 as well as in check_stub_type to deal with the (legitimate in
3735 C though not C++) case of several types with the same name
3736 in different source files. */
3737 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3739 struct pending
*ppt
;
3741 /* Name of the type, without "struct" or "union" */
3742 char *typename
= TYPE_TAG_NAME (*type
);
3744 if (typename
== NULL
)
3746 static struct complaint msg
= {"need a type name", 0, 0};
3750 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3752 for (i
= 0; i
< ppt
->nsyms
; i
++)
3754 struct symbol
*sym
= ppt
->symbol
[i
];
3756 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3757 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3758 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3760 && STREQ (SYMBOL_NAME (sym
), typename
))
3762 memcpy (*type
, SYMBOL_TYPE (sym
),
3763 sizeof (struct type
));
3771 case TYPE_CODE_ARRAY
:
3773 /* This is a kludge which is here for historical reasons
3774 because I suspect that check_stub_type does not get
3775 called everywhere it needs to be called for arrays. Even
3776 with this kludge, those places are broken for the case
3777 where the stub type is defined in another compilation
3778 unit, but this kludge at least deals with it for the case
3779 in which it is the same compilation unit.
3781 Don't try to do this by calling check_stub_type; it might
3782 cause symbols to be read in lookup_symbol, and the symbol
3783 reader is not reentrant. */
3785 struct type
*range_type
;
3788 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3790 if (TYPE_NFIELDS (*type
) != 1)
3792 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3793 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3796 /* Now recompute the length of the array type, based on its
3797 number of elements and the target type's length. */
3798 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3799 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3800 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3801 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3803 /* If the target type is not a stub, we could be clearing
3804 TYPE_FLAG_TARGET_STUB for *type. */
3811 static struct complaint msg
= {"\
3812 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3813 complain (&msg
, TYPE_CODE (*type
));
3819 undef_types_length
= 0;
3822 /* Scan through all of the global symbols defined in the object file,
3823 assigning values to the debugging symbols that need to be assigned
3824 to. Get these symbols from the minimal symbol table.
3825 Return 1 if there might still be unresolved debugging symbols, else 0. */
3827 static int scan_file_globals_1
PARAMS ((struct objfile
*));
3830 scan_file_globals_1 (objfile
)
3831 struct objfile
*objfile
;
3834 struct minimal_symbol
*msymbol
;
3835 struct symbol
*sym
, *prev
;
3837 /* Avoid expensive loop through all minimal symbols if there are
3838 no unresolved symbols. */
3839 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3841 if (global_sym_chain
[hash
])
3844 if (hash
>= HASHSIZE
)
3847 if (objfile
->msymbols
== 0) /* Beware the null file. */
3850 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3854 /* Skip static symbols. */
3855 switch (MSYMBOL_TYPE (msymbol
))
3867 /* Get the hash index and check all the symbols
3868 under that hash index. */
3870 hash
= hashname (SYMBOL_NAME (msymbol
));
3872 for (sym
= global_sym_chain
[hash
]; sym
;)
3874 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3875 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3877 /* Splice this symbol out of the hash chain and
3878 assign the value we have to it. */
3881 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3885 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3888 /* Check to see whether we need to fix up a common block. */
3889 /* Note: this code might be executed several times for
3890 the same symbol if there are multiple references. */
3892 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3894 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3898 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3901 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3905 sym
= SYMBOL_VALUE_CHAIN (prev
);
3909 sym
= global_sym_chain
[hash
];
3915 sym
= SYMBOL_VALUE_CHAIN (sym
);
3922 /* Assign values to global debugging symbols.
3923 Search the passed objfile first, then try the runtime common symbols.
3924 Complain about any remaining unresolved symbols and remove them
3928 scan_file_globals (objfile
)
3929 struct objfile
*objfile
;
3932 struct symbol
*sym
, *prev
;
3934 if (scan_file_globals_1 (objfile
) == 0)
3936 if (rt_common_objfile
&& scan_file_globals_1 (rt_common_objfile
) == 0)
3939 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3941 sym
= global_sym_chain
[hash
];
3944 complain (&unresolved_sym_chain_complaint
,
3945 objfile
->name
, SYMBOL_NAME (sym
));
3947 /* Change the symbol address from the misleading chain value
3950 sym
= SYMBOL_VALUE_CHAIN (sym
);
3951 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3954 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3957 /* Initialize anything that needs initializing when starting to read
3958 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3966 /* Initialize anything that needs initializing when a completely new
3967 symbol file is specified (not just adding some symbols from another
3968 file, e.g. a shared library). */
3971 stabsread_new_init ()
3973 /* Empty the hash table of global syms looking for values. */
3974 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3977 /* Initialize anything that needs initializing at the same time as
3978 start_symtab() is called. */
3982 global_stabs
= NULL
; /* AIX COFF */
3983 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3984 n_this_object_header_files
= 1;
3985 type_vector_length
= 0;
3986 type_vector
= (struct type
**) 0;
3988 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3989 common_block_name
= NULL
;
3994 /* Call after end_symtab() */
4000 free ((char *) type_vector
);
4003 type_vector_length
= 0;
4004 previous_stab_code
= 0;
4008 finish_global_stabs (objfile
)
4009 struct objfile
*objfile
;
4013 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4014 free ((PTR
) global_stabs
);
4015 global_stabs
= NULL
;
4019 /* Initializer for this module */
4022 _initialize_stabsread ()
4024 undef_types_allocated
= 20;
4025 undef_types_length
= 0;
4026 undef_types
= (struct type
**)
4027 xmalloc (undef_types_allocated
* sizeof (struct type
*));