1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
28 #include "gdb_string.h"
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. */
596 #ifdef STATIC_TRANSFORM_NAME
598 /* SunPRO (3.0 at least) static variable encoding. */
603 complain (&unrecognized_cplus_name_complaint
, string
);
604 goto normal
; /* Do *something* with it */
610 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
611 SYMBOL_NAME (sym
) = (char *)
612 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
613 /* Open-coded memcpy--saves function call time. */
614 /* FIXME: Does it really? Try replacing with simple strcpy and
615 try it on an executable with a large symbol table. */
616 /* FIXME: considering that gcc can open code memcpy anyway, I
617 doubt it. xoxorich. */
619 register char *p1
= string
;
620 register char *p2
= SYMBOL_NAME (sym
);
628 /* If this symbol is from a C++ compilation, then attempt to cache the
629 demangled form for future reference. This is a typical time versus
630 space tradeoff, that was decided in favor of time because it sped up
631 C++ symbol lookups by a factor of about 20. */
633 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
637 /* Determine the type of name being defined. */
639 /* Getting GDB to correctly skip the symbol on an undefined symbol
640 descriptor and not ever dump core is a very dodgy proposition if
641 we do things this way. I say the acorn RISC machine can just
642 fix their compiler. */
643 /* The Acorn RISC machine's compiler can put out locals that don't
644 start with "234=" or "(3,4)=", so assume anything other than the
645 deftypes we know how to handle is a local. */
646 if (!strchr ("cfFGpPrStTvVXCR", *p
))
648 if (isdigit (*p
) || *p
== '(' || *p
== '-')
657 /* c is a special case, not followed by a type-number.
658 SYMBOL:c=iVALUE for an integer constant symbol.
659 SYMBOL:c=rVALUE for a floating constant symbol.
660 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
661 e.g. "b:c=e6,0" for "const b = blob1"
662 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
665 SYMBOL_CLASS (sym
) = LOC_CONST
;
666 SYMBOL_TYPE (sym
) = error_type (&p
);
667 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
668 add_symbol_to_list (sym
, &file_symbols
);
679 /* FIXME-if-picky-about-floating-accuracy: Should be using
680 target arithmetic to get the value. real.c in GCC
681 probably has the necessary code. */
683 /* FIXME: lookup_fundamental_type is a hack. We should be
684 creating a type especially for the type of float constants.
685 Problem is, what type should it be?
687 Also, what should the name of this type be? Should we
688 be using 'S' constants (see stabs.texinfo) instead? */
690 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
693 obstack_alloc (&objfile
-> symbol_obstack
,
694 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
695 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
696 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
697 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
702 /* Defining integer constants this way is kind of silly,
703 since 'e' constants allows the compiler to give not
704 only the value, but the type as well. C has at least
705 int, long, unsigned int, and long long as constant
706 types; other languages probably should have at least
707 unsigned as well as signed constants. */
709 /* We just need one int constant type for all objfiles.
710 It doesn't depend on languages or anything (arguably its
711 name should be a language-specific name for a type of
712 that size, but I'm inclined to say that if the compiler
713 wants a nice name for the type, it can use 'e'). */
714 static struct type
*int_const_type
;
716 /* Yes, this is as long as a *host* int. That is because we
718 if (int_const_type
== NULL
)
720 init_type (TYPE_CODE_INT
,
721 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
723 (struct objfile
*)NULL
);
724 SYMBOL_TYPE (sym
) = int_const_type
;
725 SYMBOL_VALUE (sym
) = atoi (p
);
726 SYMBOL_CLASS (sym
) = LOC_CONST
;
730 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
731 can be represented as integral.
732 e.g. "b:c=e6,0" for "const b = blob1"
733 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
735 SYMBOL_CLASS (sym
) = LOC_CONST
;
736 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
740 SYMBOL_TYPE (sym
) = error_type (&p
);
745 /* If the value is too big to fit in an int (perhaps because
746 it is unsigned), or something like that, we silently get
747 a bogus value. The type and everything else about it is
748 correct. Ideally, we should be using whatever we have
749 available for parsing unsigned and long long values,
751 SYMBOL_VALUE (sym
) = atoi (p
);
756 SYMBOL_CLASS (sym
) = LOC_CONST
;
757 SYMBOL_TYPE (sym
) = error_type (&p
);
760 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
761 add_symbol_to_list (sym
, &file_symbols
);
765 /* The name of a caught exception. */
766 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
767 SYMBOL_CLASS (sym
) = LOC_LABEL
;
768 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
769 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
770 add_symbol_to_list (sym
, &local_symbols
);
774 /* A static function definition. */
775 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
776 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
777 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
778 add_symbol_to_list (sym
, &file_symbols
);
779 /* fall into process_function_types. */
781 process_function_types
:
782 /* Function result types are described as the result type in stabs.
783 We need to convert this to the function-returning-type-X type
784 in GDB. E.g. "int" is converted to "function returning int". */
785 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
786 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
787 /* fall into process_prototype_types */
789 process_prototype_types
:
790 /* Sun acc puts declared types of arguments here. We don't care
791 about their actual types (FIXME -- we should remember the whole
792 function prototype), but the list may define some new types
793 that we have to remember, so we must scan it now. */
796 read_type (&p
, objfile
);
801 /* A global function definition. */
802 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
803 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
804 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
805 add_symbol_to_list (sym
, &global_symbols
);
806 goto process_function_types
;
809 /* For a class G (global) symbol, it appears that the
810 value is not correct. It is necessary to search for the
811 corresponding linker definition to find the value.
812 These definitions appear at the end of the namelist. */
813 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
814 i
= hashname (SYMBOL_NAME (sym
));
815 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
816 global_sym_chain
[i
] = sym
;
817 SYMBOL_CLASS (sym
) = LOC_STATIC
;
818 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
819 add_symbol_to_list (sym
, &global_symbols
);
822 /* This case is faked by a conditional above,
823 when there is no code letter in the dbx data.
824 Dbx data never actually contains 'l'. */
827 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
828 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
829 SYMBOL_VALUE (sym
) = valu
;
830 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
831 add_symbol_to_list (sym
, &local_symbols
);
836 /* pF is a two-letter code that means a function parameter in Fortran.
837 The type-number specifies the type of the return value.
838 Translate it into a pointer-to-function type. */
842 = lookup_pointer_type
843 (lookup_function_type (read_type (&p
, objfile
)));
846 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
848 /* Normally this is a parameter, a LOC_ARG. On the i960, it
849 can also be a LOC_LOCAL_ARG depending on symbol type. */
850 #ifndef DBX_PARM_SYMBOL_CLASS
851 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
854 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
855 SYMBOL_VALUE (sym
) = valu
;
856 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
857 add_symbol_to_list (sym
, &local_symbols
);
859 if (TARGET_BYTE_ORDER
!= BIG_ENDIAN
)
861 /* On little-endian machines, this crud is never necessary,
862 and, if the extra bytes contain garbage, is harmful. */
866 /* If it's gcc-compiled, if it says `short', believe it. */
867 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
870 #if !BELIEVE_PCC_PROMOTION
872 /* This is the signed type which arguments get promoted to. */
873 static struct type
*pcc_promotion_type
;
874 /* This is the unsigned type which arguments get promoted to. */
875 static struct type
*pcc_unsigned_promotion_type
;
877 /* Call it "int" because this is mainly C lossage. */
878 if (pcc_promotion_type
== NULL
)
880 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
883 if (pcc_unsigned_promotion_type
== NULL
)
884 pcc_unsigned_promotion_type
=
885 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
886 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
888 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
889 /* This macro is defined on machines (e.g. sparc) where
890 we should believe the type of a PCC 'short' argument,
891 but shouldn't believe the address (the address is
892 the address of the corresponding int).
894 My guess is that this correction, as opposed to changing
895 the parameter to an 'int' (as done below, for PCC
896 on most machines), is the right thing to do
897 on all machines, but I don't want to risk breaking
898 something that already works. On most PCC machines,
899 the sparc problem doesn't come up because the calling
900 function has to zero the top bytes (not knowing whether
901 the called function wants an int or a short), so there
902 is little practical difference between an int and a short
903 (except perhaps what happens when the GDB user types
904 "print short_arg = 0x10000;").
906 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
907 actually produces the correct address (we don't need to fix it
908 up). I made this code adapt so that it will offset the symbol
909 if it was pointing at an int-aligned location and not
910 otherwise. This way you can use the same gdb for 4.0.x and
913 If the parameter is shorter than an int, and is integral
914 (e.g. char, short, or unsigned equivalent), and is claimed to
915 be passed on an integer boundary, don't believe it! Offset the
916 parameter's address to the tail-end of that integer. */
918 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
919 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
920 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
922 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
923 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
927 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
929 /* If PCC says a parameter is a short or a char,
930 it is really an int. */
931 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
932 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
935 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
936 ? pcc_unsigned_promotion_type
937 : pcc_promotion_type
;
941 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
943 #endif /* !BELIEVE_PCC_PROMOTION. */
946 /* acc seems to use P to delare the prototypes of functions that
947 are referenced by this file. gdb is not prepared to deal
948 with this extra information. FIXME, it ought to. */
951 read_type (&p
, objfile
);
952 goto process_prototype_types
;
957 /* Parameter which is in a register. */
958 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
959 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
960 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
961 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
963 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
964 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
966 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
967 add_symbol_to_list (sym
, &local_symbols
);
971 /* Register variable (either global or local). */
972 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
973 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
974 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
975 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
977 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
978 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
980 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
983 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
984 name to represent an argument passed in a register.
985 GCC uses 'P' for the same case. So if we find such a symbol pair
986 we combine it into one 'P' symbol. For Sun cc we need to do this
987 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
988 the 'p' symbol even if it never saves the argument onto the stack.
990 On most machines, we want to preserve both symbols, so that
991 we can still get information about what is going on with the
992 stack (VAX for computing args_printed, using stack slots instead
993 of saved registers in backtraces, etc.).
995 Note that this code illegally combines
996 main(argc) struct foo argc; { register struct foo argc; }
997 but this case is considered pathological and causes a warning
998 from a decent compiler. */
1001 && local_symbols
->nsyms
> 0
1002 #ifndef USE_REGISTER_NOT_ARG
1003 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1005 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1006 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1010 struct symbol
*prev_sym
;
1011 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
1012 if ((SYMBOL_CLASS (prev_sym
) == LOC_REF_ARG
1013 || SYMBOL_CLASS (prev_sym
) == LOC_ARG
)
1014 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
1016 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
1017 /* Use the type from the LOC_REGISTER; that is the type
1018 that is actually in that register. */
1019 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
1020 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
1025 add_symbol_to_list (sym
, &local_symbols
);
1028 add_symbol_to_list (sym
, &file_symbols
);
1032 /* Static symbol at top level of file */
1033 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1034 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1035 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1036 #ifdef STATIC_TRANSFORM_NAME
1037 if (SYMBOL_NAME (sym
)[0] == '$')
1039 struct minimal_symbol
*msym
;
1040 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1043 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1044 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1048 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1049 add_symbol_to_list (sym
, &file_symbols
);
1053 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1055 /* For a nameless type, we don't want a create a symbol, thus we
1056 did not use `sym'. Return without further processing. */
1057 if (nameless
) return NULL
;
1059 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1060 SYMBOL_VALUE (sym
) = valu
;
1061 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1062 /* C++ vagaries: we may have a type which is derived from
1063 a base type which did not have its name defined when the
1064 derived class was output. We fill in the derived class's
1065 base part member's name here in that case. */
1066 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1067 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1068 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1069 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1072 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1073 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1074 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1075 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1078 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1080 /* gcc-2.6 or later (when using -fvtable-thunks)
1081 emits a unique named type for a vtable entry.
1082 Some gdb code depends on that specific name. */
1083 extern const char vtbl_ptr_name
[];
1085 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1086 && strcmp (SYMBOL_NAME (sym
), vtbl_ptr_name
))
1087 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1089 /* If we are giving a name to a type such as "pointer to
1090 foo" or "function returning foo", we better not set
1091 the TYPE_NAME. If the program contains "typedef char
1092 *caddr_t;", we don't want all variables of type char
1093 * to print as caddr_t. This is not just a
1094 consequence of GDB's type management; PCC and GCC (at
1095 least through version 2.4) both output variables of
1096 either type char * or caddr_t with the type number
1097 defined in the 't' symbol for caddr_t. If a future
1098 compiler cleans this up it GDB is not ready for it
1099 yet, but if it becomes ready we somehow need to
1100 disable this check (without breaking the PCC/GCC2.4
1105 Fortunately, this check seems not to be necessary
1106 for anything except pointers or functions. */
1109 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1112 add_symbol_to_list (sym
, &file_symbols
);
1116 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1117 by 't' which means we are typedef'ing it as well. */
1118 synonym
= *p
== 't';
1123 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1124 strlen (SYMBOL_NAME (sym
)),
1125 &objfile
-> symbol_obstack
);
1127 /* The semantics of C++ state that "struct foo { ... }" also defines
1128 a typedef for "foo". Unfortunately, cfront never makes the typedef
1129 when translating C++ into C. We make the typedef here so that
1130 "ptype foo" works as expected for cfront translated code. */
1131 else if (current_subfile
->language
== language_cplus
)
1134 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1135 strlen (SYMBOL_NAME (sym
)),
1136 &objfile
-> symbol_obstack
);
1139 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1141 /* For a nameless type, we don't want a create a symbol, thus we
1142 did not use `sym'. Return without further processing. */
1143 if (nameless
) return NULL
;
1145 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1146 SYMBOL_VALUE (sym
) = valu
;
1147 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1148 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1149 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1150 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1151 add_symbol_to_list (sym
, &file_symbols
);
1155 /* Clone the sym and then modify it. */
1156 register struct symbol
*typedef_sym
= (struct symbol
*)
1157 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1158 *typedef_sym
= *sym
;
1159 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1160 SYMBOL_VALUE (typedef_sym
) = valu
;
1161 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1162 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1163 TYPE_NAME (SYMBOL_TYPE (sym
))
1164 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1165 add_symbol_to_list (typedef_sym
, &file_symbols
);
1170 /* Static symbol of local scope */
1171 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1172 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1173 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1174 #ifdef STATIC_TRANSFORM_NAME
1175 if (SYMBOL_NAME (sym
)[0] == '$')
1177 struct minimal_symbol
*msym
;
1178 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, objfile
);
1181 SYMBOL_NAME (sym
) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym
));
1182 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msym
);
1186 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1188 add_symbol_to_list (sym
, &global_symbols
);
1190 add_symbol_to_list (sym
, &local_symbols
);
1194 /* Reference parameter */
1195 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1196 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1197 SYMBOL_VALUE (sym
) = valu
;
1198 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1199 add_symbol_to_list (sym
, &local_symbols
);
1203 /* Reference parameter which is in a register. */
1204 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1205 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1206 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
1207 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
1209 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
1210 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
1212 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1213 add_symbol_to_list (sym
, &local_symbols
);
1217 /* This is used by Sun FORTRAN for "function result value".
1218 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1219 that Pascal uses it too, but when I tried it Pascal used
1220 "x:3" (local symbol) instead. */
1221 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1222 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1223 SYMBOL_VALUE (sym
) = valu
;
1224 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1225 add_symbol_to_list (sym
, &local_symbols
);
1229 SYMBOL_TYPE (sym
) = error_type (&p
);
1230 SYMBOL_CLASS (sym
) = LOC_CONST
;
1231 SYMBOL_VALUE (sym
) = 0;
1232 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1233 add_symbol_to_list (sym
, &file_symbols
);
1237 /* When passing structures to a function, some systems sometimes pass
1238 the address in a register, not the structure itself.
1240 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1241 to LOC_REGPARM_ADDR for structures and unions. */
1243 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1244 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1246 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1247 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1248 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1250 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th and
1251 subsequent arguments on the sparc, for example). */
1252 if (SYMBOL_CLASS (sym
) == LOC_ARG
1253 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
,
1255 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1256 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1257 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1263 /* Skip rest of this symbol and return an error type.
1265 General notes on error recovery: error_type always skips to the
1266 end of the symbol (modulo cretinous dbx symbol name continuation).
1267 Thus code like this:
1269 if (*(*pp)++ != ';')
1270 return error_type (pp);
1272 is wrong because if *pp starts out pointing at '\0' (typically as the
1273 result of an earlier error), it will be incremented to point to the
1274 start of the next symbol, which might produce strange results, at least
1275 if you run off the end of the string table. Instead use
1278 return error_type (pp);
1284 foo = error_type (pp);
1288 And in case it isn't obvious, the point of all this hair is so the compiler
1289 can define new types and new syntaxes, and old versions of the
1290 debugger will be able to read the new symbol tables. */
1292 static struct type
*
1296 complain (&error_type_complaint
);
1299 /* Skip to end of symbol. */
1300 while (**pp
!= '\0')
1305 /* Check for and handle cretinous dbx symbol name continuation! */
1306 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1308 *pp
= next_symbol_text ();
1315 return (builtin_type_error
);
1319 /* Read type information or a type definition; return the type. Even
1320 though this routine accepts either type information or a type
1321 definition, the distinction is relevant--some parts of stabsread.c
1322 assume that type information starts with a digit, '-', or '(' in
1323 deciding whether to call read_type. */
1326 read_type (pp
, objfile
)
1328 struct objfile
*objfile
;
1330 register struct type
*type
= 0;
1334 char type_descriptor
;
1336 /* Size in bits of type if specified by a type attribute, or -1 if
1337 there is no size attribute. */
1340 /* Used to distinguish string and bitstring from char-array and set. */
1343 /* Read type number if present. The type number may be omitted.
1344 for instance in a two-dimensional array declared with type
1345 "ar1;1;10;ar1;1;10;4". */
1346 if ((**pp
>= '0' && **pp
<= '9')
1350 if (read_type_number (pp
, typenums
) != 0)
1351 return error_type (pp
);
1353 /* Type is not being defined here. Either it already exists,
1354 or this is a forward reference to it. dbx_alloc_type handles
1357 return dbx_alloc_type (typenums
, objfile
);
1359 /* Type is being defined here. */
1366 /* It might be a type attribute or a member type. */
1367 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1372 /* Type attributes. */
1375 /* Skip to the semicolon. */
1376 while (*p
!= ';' && *p
!= '\0')
1380 return error_type (pp
);
1382 /* Skip the semicolon. */
1388 type_size
= atoi (attr
+ 1);
1398 /* Ignore unrecognized type attributes, so future compilers
1399 can invent new ones. */
1404 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1409 /* 'typenums=' not present, type is anonymous. Read and return
1410 the definition, but don't put it in the type vector. */
1411 typenums
[0] = typenums
[1] = -1;
1415 type_descriptor
= (*pp
)[-1];
1416 switch (type_descriptor
)
1420 enum type_code code
;
1422 /* Used to index through file_symbols. */
1423 struct pending
*ppt
;
1426 /* Name including "struct", etc. */
1430 char *from
, *to
, *p
, *q1
, *q2
;
1432 /* Set the type code according to the following letter. */
1436 code
= TYPE_CODE_STRUCT
;
1439 code
= TYPE_CODE_UNION
;
1442 code
= TYPE_CODE_ENUM
;
1446 /* Complain and keep going, so compilers can invent new
1447 cross-reference types. */
1448 static struct complaint msg
=
1449 {"Unrecognized cross-reference type `%c'", 0, 0};
1450 complain (&msg
, (*pp
)[0]);
1451 code
= TYPE_CODE_STRUCT
;
1456 q1
= strchr(*pp
, '<');
1457 p
= strchr(*pp
, ':');
1459 return error_type (pp
);
1460 while (q1
&& p
> q1
&& p
[1] == ':')
1462 q2
= strchr(q1
, '>');
1468 return error_type (pp
);
1471 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1473 /* Copy the name. */
1479 /* Set the pointer ahead of the name which we just read, and
1484 /* Now check to see whether the type has already been
1485 declared. This was written for arrays of cross-referenced
1486 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1487 sure it is not necessary anymore. But it might be a good
1488 idea, to save a little memory. */
1490 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1491 for (i
= 0; i
< ppt
->nsyms
; i
++)
1493 struct symbol
*sym
= ppt
->symbol
[i
];
1495 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1496 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1497 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1498 && STREQ (SYMBOL_NAME (sym
), type_name
))
1500 obstack_free (&objfile
-> type_obstack
, type_name
);
1501 type
= SYMBOL_TYPE (sym
);
1506 /* Didn't find the type to which this refers, so we must
1507 be dealing with a forward reference. Allocate a type
1508 structure for it, and keep track of it so we can
1509 fill in the rest of the fields when we get the full
1511 type
= dbx_alloc_type (typenums
, objfile
);
1512 TYPE_CODE (type
) = code
;
1513 TYPE_TAG_NAME (type
) = type_name
;
1514 INIT_CPLUS_SPECIFIC(type
);
1515 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1517 add_undefined_type (type
);
1521 case '-': /* RS/6000 built-in type */
1540 /* Peek ahead at the number to detect void. */
1541 if (read_type_number (pp
, xtypenums
) != 0)
1542 return error_type (pp
);
1544 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1545 /* It's being defined as itself. That means it is "void". */
1546 type
= init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
1551 /* Go back to the number and have read_type get it. This means
1552 that we can deal with something like t(1,2)=(3,4)=... which
1553 the Lucid compiler uses. */
1555 xtype
= read_type (pp
, objfile
);
1557 /* The type is being defined to another type. So we copy the type.
1558 This loses if we copy a C++ class and so we lose track of how
1559 the names are mangled (but g++ doesn't output stabs like this
1562 type
= alloc_type (objfile
);
1563 memcpy (type
, xtype
, sizeof (struct type
));
1565 /* The idea behind clearing the names is that the only purpose
1566 for defining a type to another type is so that the name of
1567 one can be different. So we probably don't need to worry much
1568 about the case where the compiler doesn't give a name to the
1570 TYPE_NAME (type
) = NULL
;
1571 TYPE_TAG_NAME (type
) = NULL
;
1573 if (typenums
[0] != -1)
1574 *dbx_lookup_type (typenums
) = type
;
1578 /* In the following types, we must be sure to overwrite any existing
1579 type that the typenums refer to, rather than allocating a new one
1580 and making the typenums point to the new one. This is because there
1581 may already be pointers to the existing type (if it had been
1582 forward-referenced), and we must change it to a pointer, function,
1583 reference, or whatever, *in-place*. */
1586 type1
= read_type (pp
, objfile
);
1587 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1590 case '&': /* Reference to another type */
1591 type1
= read_type (pp
, objfile
);
1592 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1595 case 'f': /* Function returning another type */
1596 if (os9k_stabs
&& **pp
== '(')
1598 /* Function prototype; parse it.
1599 We must conditionalize this on os9k_stabs because otherwise
1600 it could be confused with a Sun-style (1,3) typenumber
1606 t
= read_type(pp
, objfile
);
1607 if (**pp
== ',') ++*pp
;
1610 type1
= read_type (pp
, objfile
);
1611 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1614 case 'k': /* Const qualifier on some type (Sun) */
1615 case 'c': /* Const qualifier on some type (OS9000) */
1616 /* Because 'c' means other things to AIX and 'k' is perfectly good,
1617 only accept 'c' in the os9k_stabs case. */
1618 if (type_descriptor
== 'c' && !os9k_stabs
)
1619 return error_type (pp
);
1620 type
= read_type (pp
, objfile
);
1621 /* FIXME! For now, we ignore const and volatile qualifiers. */
1624 case 'B': /* Volatile qual on some type (Sun) */
1625 case 'i': /* Volatile qual on some type (OS9000) */
1626 /* Because 'i' means other things to AIX and 'B' is perfectly good,
1627 only accept 'i' in the os9k_stabs case. */
1628 if (type_descriptor
== 'i' && !os9k_stabs
)
1629 return error_type (pp
);
1630 type
= read_type (pp
, objfile
);
1631 /* FIXME! For now, we ignore const and volatile qualifiers. */
1634 /* FIXME -- we should be doing smash_to_XXX types here. */
1635 case '@': /* Member (class & variable) type */
1637 struct type
*domain
= read_type (pp
, objfile
);
1638 struct type
*memtype
;
1641 /* Invalid member type data format. */
1642 return error_type (pp
);
1645 memtype
= read_type (pp
, objfile
);
1646 type
= dbx_alloc_type (typenums
, objfile
);
1647 smash_to_member_type (type
, domain
, memtype
);
1651 case '#': /* Method (class & fn) type */
1652 if ((*pp
)[0] == '#')
1654 /* We'll get the parameter types from the name. */
1655 struct type
*return_type
;
1658 return_type
= read_type (pp
, objfile
);
1659 if (*(*pp
)++ != ';')
1660 complain (&invalid_member_complaint
, symnum
);
1661 type
= allocate_stub_method (return_type
);
1662 if (typenums
[0] != -1)
1663 *dbx_lookup_type (typenums
) = type
;
1667 struct type
*domain
= read_type (pp
, objfile
);
1668 struct type
*return_type
;
1672 /* Invalid member type data format. */
1673 return error_type (pp
);
1677 return_type
= read_type (pp
, objfile
);
1678 args
= read_args (pp
, ';', objfile
);
1679 type
= dbx_alloc_type (typenums
, objfile
);
1680 smash_to_method_type (type
, domain
, return_type
, args
);
1684 case 'r': /* Range type */
1685 type
= read_range_type (pp
, typenums
, objfile
);
1686 if (typenums
[0] != -1)
1687 *dbx_lookup_type (typenums
) = type
;
1692 /* Const and volatile qualified type. */
1693 type
= read_type (pp
, objfile
);
1696 /* Sun ACC builtin int type */
1697 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1698 if (typenums
[0] != -1)
1699 *dbx_lookup_type (typenums
) = type
;
1703 case 'R': /* Sun ACC builtin float type */
1704 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1705 if (typenums
[0] != -1)
1706 *dbx_lookup_type (typenums
) = type
;
1709 case 'e': /* Enumeration type */
1710 type
= dbx_alloc_type (typenums
, objfile
);
1711 type
= read_enum_type (pp
, type
, objfile
);
1712 if (typenums
[0] != -1)
1713 *dbx_lookup_type (typenums
) = type
;
1716 case 's': /* Struct type */
1717 case 'u': /* Union type */
1718 type
= dbx_alloc_type (typenums
, objfile
);
1719 if (!TYPE_NAME (type
))
1721 TYPE_NAME (type
) = type_synonym_name
;
1723 type_synonym_name
= NULL
;
1724 switch (type_descriptor
)
1727 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1730 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1733 type
= read_struct_type (pp
, type
, objfile
);
1736 case 'a': /* Array type */
1738 return error_type (pp
);
1741 type
= dbx_alloc_type (typenums
, objfile
);
1742 type
= read_array_type (pp
, type
, objfile
);
1744 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1748 type1
= read_type (pp
, objfile
);
1749 type
= create_set_type ((struct type
*) NULL
, type1
);
1751 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1752 if (typenums
[0] != -1)
1753 *dbx_lookup_type (typenums
) = type
;
1757 --*pp
; /* Go back to the symbol in error */
1758 /* Particularly important if it was \0! */
1759 return error_type (pp
);
1764 warning ("GDB internal error, type is NULL in stabsread.c\n");
1765 return error_type (pp
);
1768 /* Size specified in a type attribute overrides any other size. */
1769 if (type_size
!= -1)
1770 TYPE_LENGTH (type
) = (type_size
+ TARGET_CHAR_BIT
- 1) / TARGET_CHAR_BIT
;
1775 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1776 Return the proper type node for a given builtin type number. */
1778 static struct type
*
1779 rs6000_builtin_type (typenum
)
1782 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1783 #define NUMBER_RECOGNIZED 34
1784 /* This includes an empty slot for type number -0. */
1785 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1786 struct type
*rettype
= NULL
;
1788 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1790 complain (&rs6000_builtin_complaint
, typenum
);
1791 return builtin_type_error
;
1793 if (negative_types
[-typenum
] != NULL
)
1794 return negative_types
[-typenum
];
1796 #if TARGET_CHAR_BIT != 8
1797 #error This code wrong for TARGET_CHAR_BIT not 8
1798 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1799 that if that ever becomes not true, the correct fix will be to
1800 make the size in the struct type to be in bits, not in units of
1807 /* The size of this and all the other types are fixed, defined
1808 by the debugging format. If there is a type called "int" which
1809 is other than 32 bits, then it should use a new negative type
1810 number (or avoid negative type numbers for that case).
1811 See stabs.texinfo. */
1812 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1815 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1818 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1821 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1824 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1825 "unsigned char", NULL
);
1828 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1831 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1832 "unsigned short", NULL
);
1835 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1836 "unsigned int", NULL
);
1839 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1842 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1843 "unsigned long", NULL
);
1846 rettype
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1849 /* IEEE single precision (32 bit). */
1850 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1853 /* IEEE double precision (64 bit). */
1854 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1857 /* This is an IEEE double on the RS/6000, and different machines with
1858 different sizes for "long double" should use different negative
1859 type numbers. See stabs.texinfo. */
1860 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1863 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1866 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1869 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1872 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1875 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1878 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1882 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1886 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1890 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1894 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1898 /* Complex type consisting of two IEEE single precision values. */
1899 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1902 /* Complex type consisting of two IEEE double precision values. */
1903 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1906 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1909 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1912 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1915 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1918 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "long long", NULL
);
1921 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1922 "unsigned long long", NULL
);
1925 rettype
= init_type (TYPE_CODE_INT
, 8, TYPE_FLAG_UNSIGNED
,
1929 rettype
= init_type (TYPE_CODE_INT
, 8, 0, "integer*8", NULL
);
1932 negative_types
[-typenum
] = rettype
;
1936 /* This page contains subroutines of read_type. */
1938 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1939 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1940 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1941 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1943 /* Read member function stabs info for C++ classes. The form of each member
1946 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1948 An example with two member functions is:
1950 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1952 For the case of overloaded operators, the format is op$::*.funcs, where
1953 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1954 name (such as `+=') and `.' marks the end of the operator name.
1956 Returns 1 for success, 0 for failure. */
1959 read_member_functions (fip
, pp
, type
, objfile
)
1960 struct field_info
*fip
;
1963 struct objfile
*objfile
;
1967 /* Total number of member functions defined in this class. If the class
1968 defines two `f' functions, and one `g' function, then this will have
1970 int total_length
= 0;
1974 struct next_fnfield
*next
;
1975 struct fn_field fn_field
;
1977 struct type
*look_ahead_type
;
1978 struct next_fnfieldlist
*new_fnlist
;
1979 struct next_fnfield
*new_sublist
;
1983 /* Process each list until we find something that is not a member function
1984 or find the end of the functions. */
1988 /* We should be positioned at the start of the function name.
1989 Scan forward to find the first ':' and if it is not the
1990 first of a "::" delimiter, then this is not a member function. */
2002 look_ahead_type
= NULL
;
2005 new_fnlist
= (struct next_fnfieldlist
*)
2006 xmalloc (sizeof (struct next_fnfieldlist
));
2007 make_cleanup (free
, new_fnlist
);
2008 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
2010 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
2012 /* This is a completely wierd case. In order to stuff in the
2013 names that might contain colons (the usual name delimiter),
2014 Mike Tiemann defined a different name format which is
2015 signalled if the identifier is "op$". In that case, the
2016 format is "op$::XXXX." where XXXX is the name. This is
2017 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2018 /* This lets the user type "break operator+".
2019 We could just put in "+" as the name, but that wouldn't
2021 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
2022 char *o
= opname
+ 3;
2024 /* Skip past '::'. */
2027 STABS_CONTINUE (pp
);
2033 main_fn_name
= savestring (opname
, o
- opname
);
2039 main_fn_name
= savestring (*pp
, p
- *pp
);
2040 /* Skip past '::'. */
2043 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
2048 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
2049 make_cleanup (free
, new_sublist
);
2050 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
2052 /* Check for and handle cretinous dbx symbol name continuation! */
2053 if (look_ahead_type
== NULL
)
2056 STABS_CONTINUE (pp
);
2058 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
2061 /* Invalid symtab info for member function. */
2067 /* g++ version 1 kludge */
2068 new_sublist
-> fn_field
.type
= look_ahead_type
;
2069 look_ahead_type
= NULL
;
2079 /* If this is just a stub, then we don't have the real name here. */
2081 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
2083 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
2084 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
2085 new_sublist
-> fn_field
.is_stub
= 1;
2087 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
2090 /* Set this member function's visibility fields. */
2093 case VISIBILITY_PRIVATE
:
2094 new_sublist
-> fn_field
.is_private
= 1;
2096 case VISIBILITY_PROTECTED
:
2097 new_sublist
-> fn_field
.is_protected
= 1;
2101 STABS_CONTINUE (pp
);
2104 case 'A': /* Normal functions. */
2105 new_sublist
-> fn_field
.is_const
= 0;
2106 new_sublist
-> fn_field
.is_volatile
= 0;
2109 case 'B': /* `const' member functions. */
2110 new_sublist
-> fn_field
.is_const
= 1;
2111 new_sublist
-> fn_field
.is_volatile
= 0;
2114 case 'C': /* `volatile' member function. */
2115 new_sublist
-> fn_field
.is_const
= 0;
2116 new_sublist
-> fn_field
.is_volatile
= 1;
2119 case 'D': /* `const volatile' member function. */
2120 new_sublist
-> fn_field
.is_const
= 1;
2121 new_sublist
-> fn_field
.is_volatile
= 1;
2124 case '*': /* File compiled with g++ version 1 -- no info */
2129 complain (&const_vol_complaint
, **pp
);
2138 /* virtual member function, followed by index.
2139 The sign bit is set to distinguish pointers-to-methods
2140 from virtual function indicies. Since the array is
2141 in words, the quantity must be shifted left by 1
2142 on 16 bit machine, and by 2 on 32 bit machine, forcing
2143 the sign bit out, and usable as a valid index into
2144 the array. Remove the sign bit here. */
2145 new_sublist
-> fn_field
.voffset
=
2146 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
2150 STABS_CONTINUE (pp
);
2151 if (**pp
== ';' || **pp
== '\0')
2153 /* Must be g++ version 1. */
2154 new_sublist
-> fn_field
.fcontext
= 0;
2158 /* Figure out from whence this virtual function came.
2159 It may belong to virtual function table of
2160 one of its baseclasses. */
2161 look_ahead_type
= read_type (pp
, objfile
);
2164 /* g++ version 1 overloaded methods. */
2168 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2177 look_ahead_type
= NULL
;
2183 /* static member function. */
2184 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2185 if (strncmp (new_sublist
-> fn_field
.physname
,
2186 main_fn_name
, strlen (main_fn_name
)))
2188 new_sublist
-> fn_field
.is_stub
= 1;
2194 complain (&member_fn_complaint
, (*pp
)[-1]);
2195 /* Fall through into normal member function. */
2198 /* normal member function. */
2199 new_sublist
-> fn_field
.voffset
= 0;
2200 new_sublist
-> fn_field
.fcontext
= 0;
2204 new_sublist
-> next
= sublist
;
2205 sublist
= new_sublist
;
2207 STABS_CONTINUE (pp
);
2209 while (**pp
!= ';' && **pp
!= '\0');
2213 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2214 obstack_alloc (&objfile
-> type_obstack
,
2215 sizeof (struct fn_field
) * length
);
2216 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2217 sizeof (struct fn_field
) * length
);
2218 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2220 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2223 new_fnlist
-> fn_fieldlist
.length
= length
;
2224 new_fnlist
-> next
= fip
-> fnlist
;
2225 fip
-> fnlist
= new_fnlist
;
2227 total_length
+= length
;
2228 STABS_CONTINUE (pp
);
2233 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2234 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2235 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2236 memset (TYPE_FN_FIELDLISTS (type
), 0,
2237 sizeof (struct fn_fieldlist
) * nfn_fields
);
2238 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2239 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2245 /* Special GNU C++ name.
2247 Returns 1 for success, 0 for failure. "failure" means that we can't
2248 keep parsing and it's time for error_type(). */
2251 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2252 struct field_info
*fip
;
2255 struct objfile
*objfile
;
2260 struct type
*context
;
2270 /* At this point, *pp points to something like "22:23=*22...",
2271 where the type number before the ':' is the "context" and
2272 everything after is a regular type definition. Lookup the
2273 type, find it's name, and construct the field name. */
2275 context
= read_type (pp
, objfile
);
2279 case 'f': /* $vf -- a virtual function table pointer */
2280 fip
->list
->field
.name
=
2281 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2284 case 'b': /* $vb -- a virtual bsomethingorother */
2285 name
= type_name_no_tag (context
);
2288 complain (&invalid_cpp_type_complaint
, symnum
);
2291 fip
->list
->field
.name
=
2292 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2296 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2297 fip
->list
->field
.name
=
2298 obconcat (&objfile
->type_obstack
,
2299 "INVALID_CPLUSPLUS_ABBREV", "", "");
2303 /* At this point, *pp points to the ':'. Skip it and read the
2309 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2312 fip
->list
->field
.type
= read_type (pp
, objfile
);
2314 (*pp
)++; /* Skip the comma. */
2320 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2324 /* This field is unpacked. */
2325 fip
->list
->field
.bitsize
= 0;
2326 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2330 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2331 /* We have no idea what syntax an unrecognized abbrev would have, so
2332 better return 0. If we returned 1, we would need to at least advance
2333 *pp to avoid an infinite loop. */
2340 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2341 struct field_info
*fip
;
2345 struct objfile
*objfile
;
2347 fip
-> list
-> field
.name
=
2348 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2351 /* This means we have a visibility for a field coming. */
2355 fip
-> list
-> visibility
= *(*pp
)++;
2359 /* normal dbx-style format, no explicit visibility */
2360 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2363 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2368 /* Possible future hook for nested types. */
2371 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2377 /* Static class member. */
2378 fip
-> list
-> field
.bitpos
= (long) -1;
2384 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2388 else if (**pp
!= ',')
2390 /* Bad structure-type format. */
2391 complain (&stabs_general_complaint
, "bad structure-type format");
2395 (*pp
)++; /* Skip the comma. */
2399 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2402 complain (&stabs_general_complaint
, "bad structure-type format");
2405 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2408 complain (&stabs_general_complaint
, "bad structure-type format");
2413 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2415 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2416 it is a field which has been optimized out. The correct stab for
2417 this case is to use VISIBILITY_IGNORE, but that is a recent
2418 invention. (2) It is a 0-size array. For example
2419 union { int num; char str[0]; } foo. Printing "<no value>" for
2420 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2421 will continue to work, and a 0-size array as a whole doesn't
2422 have any contents to print.
2424 I suspect this probably could also happen with gcc -gstabs (not
2425 -gstabs+) for static fields, and perhaps other C++ extensions.
2426 Hopefully few people use -gstabs with gdb, since it is intended
2427 for dbx compatibility. */
2429 /* Ignore this field. */
2430 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2434 /* Detect an unpacked field and mark it as such.
2435 dbx gives a bit size for all fields.
2436 Note that forward refs cannot be packed,
2437 and treat enums as if they had the width of ints. */
2439 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2440 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2442 fip
-> list
-> field
.bitsize
= 0;
2444 if ((fip
-> list
-> field
.bitsize
2445 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2446 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2447 && (fip
-> list
-> field
.bitsize
2452 fip
-> list
-> field
.bitpos
% 8 == 0)
2454 fip
-> list
-> field
.bitsize
= 0;
2460 /* Read struct or class data fields. They have the form:
2462 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2464 At the end, we see a semicolon instead of a field.
2466 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2469 The optional VISIBILITY is one of:
2471 '/0' (VISIBILITY_PRIVATE)
2472 '/1' (VISIBILITY_PROTECTED)
2473 '/2' (VISIBILITY_PUBLIC)
2474 '/9' (VISIBILITY_IGNORE)
2476 or nothing, for C style fields with public visibility.
2478 Returns 1 for success, 0 for failure. */
2481 read_struct_fields (fip
, pp
, type
, objfile
)
2482 struct field_info
*fip
;
2485 struct objfile
*objfile
;
2488 struct nextfield
*new;
2490 /* We better set p right now, in case there are no fields at all... */
2494 /* Read each data member type until we find the terminating ';' at the end of
2495 the data member list, or break for some other reason such as finding the
2496 start of the member function list. */
2500 if (os9k_stabs
&& **pp
== ',') break;
2501 STABS_CONTINUE (pp
);
2502 /* Get space to record the next field's data. */
2503 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2504 make_cleanup (free
, new);
2505 memset (new, 0, sizeof (struct nextfield
));
2506 new -> next
= fip
-> list
;
2509 /* Get the field name. */
2512 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2513 unless the CPLUS_MARKER is followed by an underscore, in
2514 which case it is just the name of an anonymous type, which we
2515 should handle like any other type name. We accept either '$'
2516 or '.', because a field name can never contain one of these
2517 characters except as a CPLUS_MARKER (we probably should be
2518 doing that in most parts of GDB). */
2520 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2522 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2527 /* Look for the ':' that separates the field name from the field
2528 values. Data members are delimited by a single ':', while member
2529 functions are delimited by a pair of ':'s. When we hit the member
2530 functions (if any), terminate scan loop and return. */
2532 while (*p
!= ':' && *p
!= '\0')
2539 /* Check to see if we have hit the member functions yet. */
2544 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2546 if (p
[0] == ':' && p
[1] == ':')
2548 /* chill the list of fields: the last entry (at the head) is a
2549 partially constructed entry which we now scrub. */
2550 fip
-> list
= fip
-> list
-> next
;
2555 /* The stabs for C++ derived classes contain baseclass information which
2556 is marked by a '!' character after the total size. This function is
2557 called when we encounter the baseclass marker, and slurps up all the
2558 baseclass information.
2560 Immediately following the '!' marker is the number of base classes that
2561 the class is derived from, followed by information for each base class.
2562 For each base class, there are two visibility specifiers, a bit offset
2563 to the base class information within the derived class, a reference to
2564 the type for the base class, and a terminating semicolon.
2566 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2568 Baseclass information marker __________________|| | | | | | |
2569 Number of baseclasses __________________________| | | | | | |
2570 Visibility specifiers (2) ________________________| | | | | |
2571 Offset in bits from start of class _________________| | | | |
2572 Type number for base class ___________________________| | | |
2573 Visibility specifiers (2) _______________________________| | |
2574 Offset in bits from start of class ________________________| |
2575 Type number of base class ____________________________________|
2577 Return 1 for success, 0 for (error-type-inducing) failure. */
2580 read_baseclasses (fip
, pp
, type
, objfile
)
2581 struct field_info
*fip
;
2584 struct objfile
*objfile
;
2587 struct nextfield
*new;
2595 /* Skip the '!' baseclass information marker. */
2599 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2602 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2608 /* Some stupid compilers have trouble with the following, so break
2609 it up into simpler expressions. */
2610 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2611 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2614 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2617 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2618 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2622 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2624 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2626 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2627 make_cleanup (free
, new);
2628 memset (new, 0, sizeof (struct nextfield
));
2629 new -> next
= fip
-> list
;
2631 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2633 STABS_CONTINUE (pp
);
2637 /* Nothing to do. */
2640 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2643 /* Unknown character. Complain and treat it as non-virtual. */
2645 static struct complaint msg
= {
2646 "Unknown virtual character `%c' for baseclass", 0, 0};
2647 complain (&msg
, **pp
);
2652 new -> visibility
= *(*pp
)++;
2653 switch (new -> visibility
)
2655 case VISIBILITY_PRIVATE
:
2656 case VISIBILITY_PROTECTED
:
2657 case VISIBILITY_PUBLIC
:
2660 /* Bad visibility format. Complain and treat it as
2663 static struct complaint msg
= {
2664 "Unknown visibility `%c' for baseclass", 0, 0};
2665 complain (&msg
, new -> visibility
);
2666 new -> visibility
= VISIBILITY_PUBLIC
;
2673 /* The remaining value is the bit offset of the portion of the object
2674 corresponding to this baseclass. Always zero in the absence of
2675 multiple inheritance. */
2677 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2682 /* The last piece of baseclass information is the type of the
2683 base class. Read it, and remember it's type name as this
2686 new -> field
.type
= read_type (pp
, objfile
);
2687 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2689 /* skip trailing ';' and bump count of number of fields seen */
2698 /* The tail end of stabs for C++ classes that contain a virtual function
2699 pointer contains a tilde, a %, and a type number.
2700 The type number refers to the base class (possibly this class itself) which
2701 contains the vtable pointer for the current class.
2703 This function is called when we have parsed all the method declarations,
2704 so we can look for the vptr base class info. */
2707 read_tilde_fields (fip
, pp
, type
, objfile
)
2708 struct field_info
*fip
;
2711 struct objfile
*objfile
;
2715 STABS_CONTINUE (pp
);
2717 /* If we are positioned at a ';', then skip it. */
2727 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2729 /* Obsolete flags that used to indicate the presence
2730 of constructors and/or destructors. */
2734 /* Read either a '%' or the final ';'. */
2735 if (*(*pp
)++ == '%')
2737 /* The next number is the type number of the base class
2738 (possibly our own class) which supplies the vtable for
2739 this class. Parse it out, and search that class to find
2740 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2741 and TYPE_VPTR_FIELDNO. */
2746 t
= read_type (pp
, objfile
);
2748 while (*p
!= '\0' && *p
!= ';')
2754 /* Premature end of symbol. */
2758 TYPE_VPTR_BASETYPE (type
) = t
;
2759 if (type
== t
) /* Our own class provides vtbl ptr */
2761 for (i
= TYPE_NFIELDS (t
) - 1;
2762 i
>= TYPE_N_BASECLASSES (t
);
2765 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2766 sizeof (vptr_name
) - 1))
2768 TYPE_VPTR_FIELDNO (type
) = i
;
2772 /* Virtual function table field not found. */
2773 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2778 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2789 attach_fn_fields_to_type (fip
, type
)
2790 struct field_info
*fip
;
2791 register struct type
*type
;
2795 for (n
= TYPE_NFN_FIELDS (type
);
2796 fip
-> fnlist
!= NULL
;
2797 fip
-> fnlist
= fip
-> fnlist
-> next
)
2799 --n
; /* Circumvent Sun3 compiler bug */
2800 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2805 /* Create the vector of fields, and record how big it is.
2806 We need this info to record proper virtual function table information
2807 for this class's virtual functions. */
2810 attach_fields_to_type (fip
, type
, objfile
)
2811 struct field_info
*fip
;
2812 register struct type
*type
;
2813 struct objfile
*objfile
;
2815 register int nfields
= 0;
2816 register int non_public_fields
= 0;
2817 register struct nextfield
*scan
;
2819 /* Count up the number of fields that we have, as well as taking note of
2820 whether or not there are any non-public fields, which requires us to
2821 allocate and build the private_field_bits and protected_field_bits
2824 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2827 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2829 non_public_fields
++;
2833 /* Now we know how many fields there are, and whether or not there are any
2834 non-public fields. Record the field count, allocate space for the
2835 array of fields, and create blank visibility bitfields if necessary. */
2837 TYPE_NFIELDS (type
) = nfields
;
2838 TYPE_FIELDS (type
) = (struct field
*)
2839 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2840 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2842 if (non_public_fields
)
2844 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2846 TYPE_FIELD_PRIVATE_BITS (type
) =
2847 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2848 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2850 TYPE_FIELD_PROTECTED_BITS (type
) =
2851 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2852 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2854 TYPE_FIELD_IGNORE_BITS (type
) =
2855 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2856 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2859 /* Copy the saved-up fields into the field vector. Start from the head
2860 of the list, adding to the tail of the field array, so that they end
2861 up in the same order in the array in which they were added to the list. */
2863 while (nfields
-- > 0)
2865 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2866 switch (fip
-> list
-> visibility
)
2868 case VISIBILITY_PRIVATE
:
2869 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2872 case VISIBILITY_PROTECTED
:
2873 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2876 case VISIBILITY_IGNORE
:
2877 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2880 case VISIBILITY_PUBLIC
:
2884 /* Unknown visibility. Complain and treat it as public. */
2886 static struct complaint msg
= {
2887 "Unknown visibility `%c' for field", 0, 0};
2888 complain (&msg
, fip
-> list
-> visibility
);
2892 fip
-> list
= fip
-> list
-> next
;
2897 /* Read the description of a structure (or union type) and return an object
2898 describing the type.
2900 PP points to a character pointer that points to the next unconsumed token
2901 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2902 *PP will point to "4a:1,0,32;;".
2904 TYPE points to an incomplete type that needs to be filled in.
2906 OBJFILE points to the current objfile from which the stabs information is
2907 being read. (Note that it is redundant in that TYPE also contains a pointer
2908 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2911 static struct type
*
2912 read_struct_type (pp
, type
, objfile
)
2915 struct objfile
*objfile
;
2917 struct cleanup
*back_to
;
2918 struct field_info fi
;
2923 back_to
= make_cleanup (null_cleanup
, 0);
2925 INIT_CPLUS_SPECIFIC (type
);
2926 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2928 /* First comes the total size in bytes. */
2932 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2934 return error_type (pp
);
2937 /* Now read the baseclasses, if any, read the regular C struct or C++
2938 class member fields, attach the fields to the type, read the C++
2939 member functions, attach them to the type, and then read any tilde
2940 field (baseclass specifier for the class holding the main vtable). */
2942 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2943 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2944 || !attach_fields_to_type (&fi
, type
, objfile
)
2945 || !read_member_functions (&fi
, pp
, type
, objfile
)
2946 || !attach_fn_fields_to_type (&fi
, type
)
2947 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2949 do_cleanups (back_to
);
2950 return (error_type (pp
));
2953 do_cleanups (back_to
);
2957 /* Read a definition of an array type,
2958 and create and return a suitable type object.
2959 Also creates a range type which represents the bounds of that
2962 static struct type
*
2963 read_array_type (pp
, type
, objfile
)
2965 register struct type
*type
;
2966 struct objfile
*objfile
;
2968 struct type
*index_type
, *element_type
, *range_type
;
2973 /* Format of an array type:
2974 "ar<index type>;lower;upper;<array_contents_type>".
2975 OS9000: "arlower,upper;<array_contents_type>".
2977 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2978 for these, produce a type like float[][]. */
2981 index_type
= builtin_type_int
;
2984 index_type
= read_type (pp
, objfile
);
2986 /* Improper format of array type decl. */
2987 return error_type (pp
);
2991 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2996 lower
= read_huge_number (pp
, os9k_stabs
? ',' : ';', &nbits
);
2998 return error_type (pp
);
3000 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
3005 upper
= read_huge_number (pp
, ';', &nbits
);
3007 return error_type (pp
);
3009 element_type
= read_type (pp
, objfile
);
3018 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
3019 type
= create_array_type (type
, element_type
, range_type
);
3021 /* If we have an array whose element type is not yet known, but whose
3022 bounds *are* known, record it to be adjusted at the end of the file. */
3024 if ((TYPE_FLAGS (element_type
) & TYPE_FLAG_STUB
) && !adjustable
)
3026 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
3027 add_undefined_type (type
);
3034 /* Read a definition of an enumeration type,
3035 and create and return a suitable type object.
3036 Also defines the symbols that represent the values of the type. */
3038 static struct type
*
3039 read_enum_type (pp
, type
, objfile
)
3041 register struct type
*type
;
3042 struct objfile
*objfile
;
3047 register struct symbol
*sym
;
3049 struct pending
**symlist
;
3050 struct pending
*osyms
, *syms
;
3053 int unsigned_enum
= 1;
3056 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3057 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3058 to do? For now, force all enum values to file scope. */
3059 if (within_function
)
3060 symlist
= &local_symbols
;
3063 symlist
= &file_symbols
;
3065 o_nsyms
= osyms
? osyms
->nsyms
: 0;
3069 /* Size. Perhaps this does not have to be conditionalized on
3070 os9k_stabs (assuming the name of an enum constant can't start
3072 read_huge_number (pp
, 0, &nbits
);
3074 return error_type (pp
);
3077 /* The aix4 compiler emits an extra field before the enum members;
3078 my guess is it's a type of some sort. Just ignore it. */
3081 /* Skip over the type. */
3085 /* Skip over the colon. */
3089 /* Read the value-names and their values.
3090 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3091 A semicolon or comma instead of a NAME means the end. */
3092 while (**pp
&& **pp
!= ';' && **pp
!= ',')
3094 STABS_CONTINUE (pp
);
3096 while (*p
!= ':') p
++;
3097 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
3099 n
= read_huge_number (pp
, ',', &nbits
);
3101 return error_type (pp
);
3103 sym
= (struct symbol
*)
3104 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3105 memset (sym
, 0, sizeof (struct symbol
));
3106 SYMBOL_NAME (sym
) = name
;
3107 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
3108 SYMBOL_CLASS (sym
) = LOC_CONST
;
3109 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
3110 SYMBOL_VALUE (sym
) = n
;
3113 add_symbol_to_list (sym
, symlist
);
3118 (*pp
)++; /* Skip the semicolon. */
3120 /* Now fill in the fields of the type-structure. */
3122 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
3123 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
3124 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
3126 TYPE_FLAGS (type
) |= TYPE_FLAG_UNSIGNED
;
3127 TYPE_NFIELDS (type
) = nsyms
;
3128 TYPE_FIELDS (type
) = (struct field
*)
3129 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
3130 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
3132 /* Find the symbols for the values and put them into the type.
3133 The symbols can be found in the symlist that we put them on
3134 to cause them to be defined. osyms contains the old value
3135 of that symlist; everything up to there was defined by us. */
3136 /* Note that we preserve the order of the enum constants, so
3137 that in something like "enum {FOO, LAST_THING=FOO}" we print
3138 FOO, not LAST_THING. */
3140 for (syms
= *symlist
, n
= nsyms
- 1; syms
; syms
= syms
->next
)
3142 int last
= syms
== osyms
? o_nsyms
: 0;
3143 int j
= syms
->nsyms
;
3144 for (; --j
>= last
; --n
)
3146 struct symbol
*xsym
= syms
->symbol
[j
];
3147 SYMBOL_TYPE (xsym
) = type
;
3148 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
3149 TYPE_FIELD_VALUE (type
, n
) = 0;
3150 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
3151 TYPE_FIELD_BITSIZE (type
, n
) = 0;
3160 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3161 typedefs in every file (for int, long, etc):
3163 type = b <signed> <width>; <offset>; <nbits>
3164 signed = u or s. Possible c in addition to u or s (for char?).
3165 offset = offset from high order bit to start bit of type.
3166 width is # bytes in object of this type, nbits is # bits in type.
3168 The width/offset stuff appears to be for small objects stored in
3169 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3172 static struct type
*
3173 read_sun_builtin_type (pp
, typenums
, objfile
)
3176 struct objfile
*objfile
;
3191 return error_type (pp
);
3195 /* For some odd reason, all forms of char put a c here. This is strange
3196 because no other type has this honor. We can safely ignore this because
3197 we actually determine 'char'acterness by the number of bits specified in
3203 /* The first number appears to be the number of bytes occupied
3204 by this type, except that unsigned short is 4 instead of 2.
3205 Since this information is redundant with the third number,
3206 we will ignore it. */
3207 read_huge_number (pp
, ';', &nbits
);
3209 return error_type (pp
);
3211 /* The second number is always 0, so ignore it too. */
3212 read_huge_number (pp
, ';', &nbits
);
3214 return error_type (pp
);
3216 /* The third number is the number of bits for this type. */
3217 type_bits
= read_huge_number (pp
, 0, &nbits
);
3219 return error_type (pp
);
3220 /* The type *should* end with a semicolon. If it are embedded
3221 in a larger type the semicolon may be the only way to know where
3222 the type ends. If this type is at the end of the stabstring we
3223 can deal with the omitted semicolon (but we don't have to like
3224 it). Don't bother to complain(), Sun's compiler omits the semicolon
3230 return init_type (TYPE_CODE_VOID
, 1,
3231 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3234 return init_type (TYPE_CODE_INT
,
3235 type_bits
/ TARGET_CHAR_BIT
,
3236 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3240 static struct type
*
3241 read_sun_floating_type (pp
, typenums
, objfile
)
3244 struct objfile
*objfile
;
3250 /* The first number has more details about the type, for example
3252 details
= read_huge_number (pp
, ';', &nbits
);
3254 return error_type (pp
);
3256 /* The second number is the number of bytes occupied by this type */
3257 nbytes
= read_huge_number (pp
, ';', &nbits
);
3259 return error_type (pp
);
3261 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3262 || details
== NF_COMPLEX32
)
3263 /* This is a type we can't handle, but we do know the size.
3264 We also will be able to give it a name. */
3265 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3267 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3270 /* Read a number from the string pointed to by *PP.
3271 The value of *PP is advanced over the number.
3272 If END is nonzero, the character that ends the
3273 number must match END, or an error happens;
3274 and that character is skipped if it does match.
3275 If END is zero, *PP is left pointing to that character.
3277 If the number fits in a long, set *BITS to 0 and return the value.
3278 If not, set *BITS to be the number of bits in the number and return 0.
3280 If encounter garbage, set *BITS to -1 and return 0. */
3283 read_huge_number (pp
, end
, bits
)
3303 /* Leading zero means octal. GCC uses this to output values larger
3304 than an int (because that would be hard in decimal). */
3312 upper_limit
= ULONG_MAX
/ radix
;
3314 upper_limit
= LONG_MAX
/ radix
;
3316 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3318 if (n
<= upper_limit
)
3321 n
+= c
- '0'; /* FIXME this overflows anyway */
3326 /* This depends on large values being output in octal, which is
3333 /* Ignore leading zeroes. */
3337 else if (c
== '2' || c
== '3')
3363 /* Large decimal constants are an error (because it is hard to
3364 count how many bits are in them). */
3370 /* -0x7f is the same as 0x80. So deal with it by adding one to
3371 the number of bits. */
3383 /* It's *BITS which has the interesting information. */
3387 static struct type
*
3388 read_range_type (pp
, typenums
, objfile
)
3391 struct objfile
*objfile
;
3393 char *orig_pp
= *pp
;
3398 struct type
*result_type
;
3399 struct type
*index_type
= NULL
;
3401 /* First comes a type we are a subrange of.
3402 In C it is usually 0, 1 or the type being defined. */
3403 if (read_type_number (pp
, rangenums
) != 0)
3404 return error_type (pp
);
3405 self_subrange
= (rangenums
[0] == typenums
[0] &&
3406 rangenums
[1] == typenums
[1]);
3411 index_type
= read_type (pp
, objfile
);
3414 /* A semicolon should now follow; skip it. */
3418 /* The remaining two operands are usually lower and upper bounds
3419 of the range. But in some special cases they mean something else. */
3420 n2
= read_huge_number (pp
, ';', &n2bits
);
3421 n3
= read_huge_number (pp
, ';', &n3bits
);
3423 if (n2bits
== -1 || n3bits
== -1)
3424 return error_type (pp
);
3427 goto handle_true_range
;
3429 /* If limits are huge, must be large integral type. */
3430 if (n2bits
!= 0 || n3bits
!= 0)
3432 char got_signed
= 0;
3433 char got_unsigned
= 0;
3434 /* Number of bits in the type. */
3437 /* Range from 0 to <large number> is an unsigned large integral type. */
3438 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3443 /* Range from <large number> to <large number>-1 is a large signed
3444 integral type. Take care of the case where <large number> doesn't
3445 fit in a long but <large number>-1 does. */
3446 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3447 || (n2bits
!= 0 && n3bits
== 0
3448 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3455 if (got_signed
|| got_unsigned
)
3457 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3458 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3462 return error_type (pp
);
3465 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3466 if (self_subrange
&& n2
== 0 && n3
== 0)
3467 return init_type (TYPE_CODE_VOID
, 1, 0, NULL
, objfile
);
3469 /* If n3 is zero and n2 is not, we want a floating type,
3470 and n2 is the width in bytes.
3472 Fortran programs appear to use this for complex types also,
3473 and they give no way to distinguish between double and single-complex!
3475 GDB does not have complex types.
3477 Just return the complex as a float of that size. It won't work right
3478 for the complex values, but at least it makes the file loadable. */
3480 if (n3
== 0 && n2
> 0)
3482 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3485 /* If the upper bound is -1, it must really be an unsigned int. */
3487 else if (n2
== 0 && n3
== -1)
3489 /* It is unsigned int or unsigned long. */
3490 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3491 compatibility hack. */
3492 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3493 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3496 /* Special case: char is defined (Who knows why) as a subrange of
3497 itself with range 0-127. */
3498 else if (self_subrange
&& n2
== 0 && n3
== 127)
3499 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3501 /* We used to do this only for subrange of self or subrange of int. */
3505 /* n3 actually gives the size. */
3506 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3509 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3511 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3513 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3514 "unsigned long", and we already checked for that,
3515 so don't need to test for it here. */
3517 /* I think this is for Convex "long long". Since I don't know whether
3518 Convex sets self_subrange, I also accept that particular size regardless
3519 of self_subrange. */
3520 else if (n3
== 0 && n2
< 0
3522 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3523 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3524 else if (n2
== -n3
-1)
3527 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3529 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3530 if (n3
== 0x7fffffff)
3531 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3534 /* We have a real range type on our hands. Allocate space and
3535 return a real pointer. */
3538 /* At this point I don't have the faintest idea how to deal with
3539 a self_subrange type; I'm going to assume that this is used
3540 as an idiom, and that all of them are special cases. So . . . */
3542 return error_type (pp
);
3544 index_type
= *dbx_lookup_type (rangenums
);
3545 if (index_type
== NULL
)
3547 /* Does this actually ever happen? Is that why we are worrying
3548 about dealing with it rather than just calling error_type? */
3550 static struct type
*range_type_index
;
3552 complain (&range_type_base_complaint
, rangenums
[1]);
3553 if (range_type_index
== NULL
)
3555 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3556 0, "range type index type", NULL
);
3557 index_type
= range_type_index
;
3560 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3561 return (result_type
);
3564 /* Read in an argument list. This is a list of types, separated by commas
3565 and terminated with END. Return the list of types read in, or (struct type
3566 **)-1 if there is an error. */
3568 static struct type
**
3569 read_args (pp
, end
, objfile
)
3572 struct objfile
*objfile
;
3574 /* FIXME! Remove this arbitrary limit! */
3575 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3581 /* Invalid argument list: no ','. */
3582 return (struct type
**)-1;
3584 STABS_CONTINUE (pp
);
3585 types
[n
++] = read_type (pp
, objfile
);
3587 (*pp
)++; /* get past `end' (the ':' character) */
3591 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3593 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3595 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3596 memset (rval
+ n
, 0, sizeof (struct type
*));
3600 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3602 memcpy (rval
, types
, n
* sizeof (struct type
*));
3606 /* Common block handling. */
3608 /* List of symbols declared since the last BCOMM. This list is a tail
3609 of local_symbols. When ECOMM is seen, the symbols on the list
3610 are noted so their proper addresses can be filled in later,
3611 using the common block base address gotten from the assembler
3614 static struct pending
*common_block
;
3615 static int common_block_i
;
3617 /* Name of the current common block. We get it from the BCOMM instead of the
3618 ECOMM to match IBM documentation (even though IBM puts the name both places
3619 like everyone else). */
3620 static char *common_block_name
;
3622 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3623 to remain after this function returns. */
3626 common_block_start (name
, objfile
)
3628 struct objfile
*objfile
;
3630 if (common_block_name
!= NULL
)
3632 static struct complaint msg
= {
3633 "Invalid symbol data: common block within common block",
3637 common_block
= local_symbols
;
3638 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3639 common_block_name
= obsavestring (name
, strlen (name
),
3640 &objfile
-> symbol_obstack
);
3643 /* Process a N_ECOMM symbol. */
3646 common_block_end (objfile
)
3647 struct objfile
*objfile
;
3649 /* Symbols declared since the BCOMM are to have the common block
3650 start address added in when we know it. common_block and
3651 common_block_i point to the first symbol after the BCOMM in
3652 the local_symbols list; copy the list and hang it off the
3653 symbol for the common block name for later fixup. */
3656 struct pending
*new = 0;
3657 struct pending
*next
;
3660 if (common_block_name
== NULL
)
3662 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3667 sym
= (struct symbol
*)
3668 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3669 memset (sym
, 0, sizeof (struct symbol
));
3670 SYMBOL_NAME (sym
) = common_block_name
;
3671 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3673 /* Now we copy all the symbols which have been defined since the BCOMM. */
3675 /* Copy all the struct pendings before common_block. */
3676 for (next
= local_symbols
;
3677 next
!= NULL
&& next
!= common_block
;
3680 for (j
= 0; j
< next
->nsyms
; j
++)
3681 add_symbol_to_list (next
->symbol
[j
], &new);
3684 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3685 NULL, it means copy all the local symbols (which we already did
3688 if (common_block
!= NULL
)
3689 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3690 add_symbol_to_list (common_block
->symbol
[j
], &new);
3692 SYMBOL_TYPE (sym
) = (struct type
*) new;
3694 /* Should we be putting local_symbols back to what it was?
3697 i
= hashname (SYMBOL_NAME (sym
));
3698 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3699 global_sym_chain
[i
] = sym
;
3700 common_block_name
= NULL
;
3703 /* Add a common block's start address to the offset of each symbol
3704 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3705 the common block name). */
3708 fix_common_block (sym
, valu
)
3712 struct pending
*next
= (struct pending
*) SYMBOL_TYPE (sym
);
3713 for ( ; next
; next
= next
->next
)
3716 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3717 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3723 /* What about types defined as forward references inside of a small lexical
3725 /* Add a type to the list of undefined types to be checked through
3726 once this file has been read in. */
3729 add_undefined_type (type
)
3732 if (undef_types_length
== undef_types_allocated
)
3734 undef_types_allocated
*= 2;
3735 undef_types
= (struct type
**)
3736 xrealloc ((char *) undef_types
,
3737 undef_types_allocated
* sizeof (struct type
*));
3739 undef_types
[undef_types_length
++] = type
;
3742 /* Go through each undefined type, see if it's still undefined, and fix it
3743 up if possible. We have two kinds of undefined types:
3745 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3746 Fix: update array length using the element bounds
3747 and the target type's length.
3748 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3749 yet defined at the time a pointer to it was made.
3750 Fix: Do a full lookup on the struct/union tag. */
3752 cleanup_undefined_types ()
3756 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3758 switch (TYPE_CODE (*type
))
3761 case TYPE_CODE_STRUCT
:
3762 case TYPE_CODE_UNION
:
3763 case TYPE_CODE_ENUM
:
3765 /* Check if it has been defined since. Need to do this here
3766 as well as in check_stub_type to deal with the (legitimate in
3767 C though not C++) case of several types with the same name
3768 in different source files. */
3769 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3771 struct pending
*ppt
;
3773 /* Name of the type, without "struct" or "union" */
3774 char *typename
= TYPE_TAG_NAME (*type
);
3776 if (typename
== NULL
)
3778 static struct complaint msg
= {"need a type name", 0, 0};
3782 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3784 for (i
= 0; i
< ppt
->nsyms
; i
++)
3786 struct symbol
*sym
= ppt
->symbol
[i
];
3788 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3789 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3790 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3792 && STREQ (SYMBOL_NAME (sym
), typename
))
3794 memcpy (*type
, SYMBOL_TYPE (sym
),
3795 sizeof (struct type
));
3803 case TYPE_CODE_ARRAY
:
3805 /* This is a kludge which is here for historical reasons
3806 because I suspect that check_stub_type does not get
3807 called everywhere it needs to be called for arrays. Even
3808 with this kludge, those places are broken for the case
3809 where the stub type is defined in another compilation
3810 unit, but this kludge at least deals with it for the case
3811 in which it is the same compilation unit.
3813 Don't try to do this by calling check_stub_type; it might
3814 cause symbols to be read in lookup_symbol, and the symbol
3815 reader is not reentrant. */
3817 struct type
*range_type
;
3820 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3822 if (TYPE_NFIELDS (*type
) != 1)
3824 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3825 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3828 /* Now recompute the length of the array type, based on its
3829 number of elements and the target type's length. */
3830 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3831 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3832 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3833 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3835 /* If the target type is not a stub, we could be clearing
3836 TYPE_FLAG_TARGET_STUB for *type. */
3843 static struct complaint msg
= {"\
3844 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3845 complain (&msg
, TYPE_CODE (*type
));
3851 undef_types_length
= 0;
3854 /* Scan through all of the global symbols defined in the object file,
3855 assigning values to the debugging symbols that need to be assigned
3856 to. Get these symbols from the minimal symbol table.
3857 Return 1 if there might still be unresolved debugging symbols, else 0. */
3859 static int scan_file_globals_1
PARAMS ((struct objfile
*));
3862 scan_file_globals_1 (objfile
)
3863 struct objfile
*objfile
;
3866 struct minimal_symbol
*msymbol
;
3867 struct symbol
*sym
, *prev
;
3869 /* Avoid expensive loop through all minimal symbols if there are
3870 no unresolved symbols. */
3871 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3873 if (global_sym_chain
[hash
])
3876 if (hash
>= HASHSIZE
)
3879 if (objfile
->msymbols
== 0) /* Beware the null file. */
3882 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3886 /* Skip static symbols. */
3887 switch (MSYMBOL_TYPE (msymbol
))
3899 /* Get the hash index and check all the symbols
3900 under that hash index. */
3902 hash
= hashname (SYMBOL_NAME (msymbol
));
3904 for (sym
= global_sym_chain
[hash
]; sym
;)
3906 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3907 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3909 /* Splice this symbol out of the hash chain and
3910 assign the value we have to it. */
3913 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3917 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3920 /* Check to see whether we need to fix up a common block. */
3921 /* Note: this code might be executed several times for
3922 the same symbol if there are multiple references. */
3924 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3926 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3930 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3933 SYMBOL_SECTION (sym
) = SYMBOL_SECTION (msymbol
);
3937 sym
= SYMBOL_VALUE_CHAIN (prev
);
3941 sym
= global_sym_chain
[hash
];
3947 sym
= SYMBOL_VALUE_CHAIN (sym
);
3954 /* Assign values to global debugging symbols.
3955 Search the passed objfile first, then try the runtime common symbols.
3956 Complain about any remaining unresolved symbols and remove them
3960 scan_file_globals (objfile
)
3961 struct objfile
*objfile
;
3964 struct symbol
*sym
, *prev
;
3966 if (scan_file_globals_1 (objfile
) == 0)
3968 if (rt_common_objfile
&& scan_file_globals_1 (rt_common_objfile
) == 0)
3971 for (hash
= 0; hash
< HASHSIZE
; hash
++)
3973 sym
= global_sym_chain
[hash
];
3976 complain (&unresolved_sym_chain_complaint
,
3977 objfile
->name
, SYMBOL_NAME (sym
));
3979 /* Change the symbol address from the misleading chain value
3982 sym
= SYMBOL_VALUE_CHAIN (sym
);
3983 SYMBOL_VALUE_ADDRESS (prev
) = 0;
3986 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3989 /* Initialize anything that needs initializing when starting to read
3990 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3998 /* Initialize anything that needs initializing when a completely new
3999 symbol file is specified (not just adding some symbols from another
4000 file, e.g. a shared library). */
4003 stabsread_new_init ()
4005 /* Empty the hash table of global syms looking for values. */
4006 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
4009 /* Initialize anything that needs initializing at the same time as
4010 start_symtab() is called. */
4014 global_stabs
= NULL
; /* AIX COFF */
4015 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4016 n_this_object_header_files
= 1;
4017 type_vector_length
= 0;
4018 type_vector
= (struct type
**) 0;
4020 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4021 common_block_name
= NULL
;
4026 /* Call after end_symtab() */
4032 free ((char *) type_vector
);
4035 type_vector_length
= 0;
4036 previous_stab_code
= 0;
4040 finish_global_stabs (objfile
)
4041 struct objfile
*objfile
;
4045 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
4046 free ((PTR
) global_stabs
);
4047 global_stabs
= NULL
;
4051 /* Initializer for this module */
4054 _initialize_stabsread ()
4056 undef_types_allocated
= 20;
4057 undef_types_length
= 0;
4058 undef_types
= (struct type
**)
4059 xmalloc (undef_types_allocated
* sizeof (struct type
*));