1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Support routines for reading and decoding debugging information in
22 the "stabs" format. This format is used with many systems that use
23 the a.out object file format, as well as some systems that use
24 COFF or ELF where the stabs data is placed in a special section.
25 Avoid placing any object file format specific code in this file. */
35 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
37 #include "complaints.h"
42 /* Ask stabsread.h to define the vars it normally declares `extern'. */
44 #include "stabsread.h" /* Our own declarations */
47 /* The routines that read and process a complete stabs for a C struct or
48 C++ class pass lists of data member fields and lists of member function
49 fields in an instance of a field_info structure, as defined below.
50 This is part of some reorganization of low level C++ support and is
51 expected to eventually go away... (FIXME) */
57 struct nextfield
*next
;
59 /* This is the raw visibility from the stab. It is not checked
60 for being one of the visibilities we recognize, so code which
61 examines this field better be able to deal. */
66 struct next_fnfieldlist
68 struct next_fnfieldlist
*next
;
69 struct fn_fieldlist fn_fieldlist
;
74 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
76 static long read_huge_number
PARAMS ((char **, int, int *));
78 static struct type
*error_type
PARAMS ((char **));
81 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
85 fix_common_block
PARAMS ((struct symbol
*, int));
88 read_type_number
PARAMS ((char **, int *));
91 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
94 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
97 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
100 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
103 rs6000_builtin_type
PARAMS ((int));
106 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
110 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
114 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
118 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
122 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
125 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
129 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
132 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
134 static struct type
**
135 read_args
PARAMS ((char **, int, struct objfile
*));
138 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
141 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
142 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
144 /* Define this as 1 if a pcc declaration of a char or short argument
145 gives the correct address. Otherwise assume pcc gives the
146 address of the corresponding int, which is not the same on a
147 big-endian machine. */
149 #ifndef BELIEVE_PCC_PROMOTION
150 #define BELIEVE_PCC_PROMOTION 0
153 struct complaint invalid_cpp_abbrev_complaint
=
154 {"invalid C++ abbreviation `%s'", 0, 0};
156 struct complaint invalid_cpp_type_complaint
=
157 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
159 struct complaint member_fn_complaint
=
160 {"member function type missing, got '%c'", 0, 0};
162 struct complaint const_vol_complaint
=
163 {"const/volatile indicator missing, got '%c'", 0, 0};
165 struct complaint error_type_complaint
=
166 {"debug info mismatch between compiler and debugger", 0, 0};
168 struct complaint invalid_member_complaint
=
169 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
171 struct complaint range_type_base_complaint
=
172 {"base type %d of range type is not defined", 0, 0};
174 struct complaint reg_value_complaint
=
175 {"register number too large in symbol %s", 0, 0};
177 struct complaint vtbl_notfound_complaint
=
178 {"virtual function table pointer not found when defining class `%s'", 0, 0};
180 struct complaint unrecognized_cplus_name_complaint
=
181 {"Unknown C++ symbol name `%s'", 0, 0};
183 struct complaint rs6000_builtin_complaint
=
184 {"Unknown builtin type %d", 0, 0};
186 struct complaint stabs_general_complaint
=
189 /* Make a list of forward references which haven't been defined. */
191 static struct type
**undef_types
;
192 static int undef_types_allocated
;
193 static int undef_types_length
;
195 /* Check for and handle cretinous stabs symbol name continuation! */
196 #define STABS_CONTINUE(pp) \
198 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
199 *(pp) = next_symbol_text (); \
203 /* Look up a dbx type-number pair. Return the address of the slot
204 where the type for that number-pair is stored.
205 The number-pair is in TYPENUMS.
207 This can be used for finding the type associated with that pair
208 or for associating a new type with the pair. */
211 dbx_lookup_type (typenums
)
214 register int filenum
= typenums
[0];
215 register int index
= typenums
[1];
217 register int real_filenum
;
218 register struct header_file
*f
;
221 if (filenum
== -1) /* -1,-1 is for temporary types. */
224 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
226 static struct complaint msg
= {"\
227 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
229 complain (&msg
, filenum
, index
, symnum
);
237 /* Caller wants address of address of type. We think
238 that negative (rs6k builtin) types will never appear as
239 "lvalues", (nor should they), so we stuff the real type
240 pointer into a temp, and return its address. If referenced,
241 this will do the right thing. */
242 static struct type
*temp_type
;
244 temp_type
= rs6000_builtin_type(index
);
248 /* Type is defined outside of header files.
249 Find it in this object file's type vector. */
250 if (index
>= type_vector_length
)
252 old_len
= type_vector_length
;
255 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
256 type_vector
= (struct type
**)
257 malloc (type_vector_length
* sizeof (struct type
*));
259 while (index
>= type_vector_length
)
261 type_vector_length
*= 2;
263 type_vector
= (struct type
**)
264 xrealloc ((char *) type_vector
,
265 (type_vector_length
* sizeof (struct type
*)));
266 memset (&type_vector
[old_len
], 0,
267 (type_vector_length
- old_len
) * sizeof (struct type
*));
269 return (&type_vector
[index
]);
273 real_filenum
= this_object_header_files
[filenum
];
275 if (real_filenum
>= n_header_files
)
277 struct type
*temp_type
;
278 struct type
**temp_type_p
;
280 warning ("GDB internal error: bad real_filenum");
283 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
284 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
285 *temp_type_p
= temp_type
;
289 f
= &header_files
[real_filenum
];
291 f_orig_length
= f
->length
;
292 if (index
>= f_orig_length
)
294 while (index
>= f
->length
)
298 f
->vector
= (struct type
**)
299 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
300 memset (&f
->vector
[f_orig_length
], 0,
301 (f
->length
- f_orig_length
) * sizeof (struct type
*));
303 return (&f
->vector
[index
]);
307 /* Make sure there is a type allocated for type numbers TYPENUMS
308 and return the type object.
309 This can create an empty (zeroed) type object.
310 TYPENUMS may be (-1, -1) to return a new type object that is not
311 put into the type vector, and so may not be referred to by number. */
314 dbx_alloc_type (typenums
, objfile
)
316 struct objfile
*objfile
;
318 register struct type
**type_addr
;
320 if (typenums
[0] == -1)
322 return (alloc_type (objfile
));
325 type_addr
= dbx_lookup_type (typenums
);
327 /* If we are referring to a type not known at all yet,
328 allocate an empty type for it.
329 We will fill it in later if we find out how. */
332 *type_addr
= alloc_type (objfile
);
338 /* for all the stabs in a given stab vector, build appropriate types
339 and fix their symbols in given symbol vector. */
342 patch_block_stabs (symbols
, stabs
, objfile
)
343 struct pending
*symbols
;
344 struct pending_stabs
*stabs
;
345 struct objfile
*objfile
;
355 /* for all the stab entries, find their corresponding symbols and
356 patch their types! */
358 for (ii
= 0; ii
< stabs
->count
; ++ii
)
360 name
= stabs
->stab
[ii
];
361 pp
= (char*) strchr (name
, ':');
365 pp
= (char *)strchr(pp
, ':');
367 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
370 /* On xcoff, if a global is defined and never referenced,
371 ld will remove it from the executable. There is then
372 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
373 sym
= (struct symbol
*)
374 obstack_alloc (&objfile
->symbol_obstack
,
375 sizeof (struct symbol
));
377 memset (sym
, 0, sizeof (struct symbol
));
378 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
379 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
381 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
383 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
385 /* I don't think the linker does this with functions,
386 so as far as I know this is never executed.
387 But it doesn't hurt to check. */
389 lookup_function_type (read_type (&pp
, objfile
));
393 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
395 add_symbol_to_list (sym
, &global_symbols
);
400 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
403 lookup_function_type (read_type (&pp
, objfile
));
407 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
415 /* Read a number by which a type is referred to in dbx data,
416 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
417 Just a single number N is equivalent to (0,N).
418 Return the two numbers by storing them in the vector TYPENUMS.
419 TYPENUMS will then be used as an argument to dbx_lookup_type.
421 Returns 0 for success, -1 for error. */
424 read_type_number (pp
, typenums
)
426 register int *typenums
;
432 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
433 if (nbits
!= 0) return -1;
434 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
435 if (nbits
!= 0) return -1;
440 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
441 if (nbits
!= 0) return -1;
447 /* To handle GNU C++ typename abbreviation, we need to be able to
448 fill in a type's name as soon as space for that type is allocated.
449 `type_synonym_name' is the name of the type being allocated.
450 It is cleared as soon as it is used (lest all allocated types
453 static char *type_synonym_name
;
455 #if !defined (REG_STRUCT_HAS_ADDR)
456 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
461 define_symbol (valu
, string
, desc
, type
, objfile
)
466 struct objfile
*objfile
;
468 register struct symbol
*sym
;
469 char *p
= (char *) strchr (string
, ':');
474 /* We would like to eliminate nameless symbols, but keep their types.
475 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
476 to type 2, but, should not create a symbol to address that type. Since
477 the symbol will be nameless, there is no way any user can refer to it. */
481 /* Ignore syms with empty names. */
485 /* Ignore old-style symbols from cc -go */
495 /* If a nameless stab entry, all we need is the type, not the symbol.
496 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
497 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
499 sym
= (struct symbol
*)
500 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
501 memset (sym
, 0, sizeof (struct symbol
));
503 if (processing_gcc_compilation
)
505 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
506 number of bytes occupied by a type or object, which we ignore. */
507 SYMBOL_LINE(sym
) = desc
;
511 SYMBOL_LINE(sym
) = 0; /* unknown */
514 if (string
[0] == CPLUS_MARKER
)
516 /* Special GNU C++ names. */
520 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
521 &objfile
-> symbol_obstack
);
524 case 'v': /* $vtbl_ptr_type */
525 /* Was: SYMBOL_NAME (sym) = "vptr"; */
529 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
530 &objfile
-> symbol_obstack
);
534 /* This was an anonymous type that was never fixed up. */
538 complain (&unrecognized_cplus_name_complaint
, string
);
539 goto normal
; /* Do *something* with it */
545 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
546 SYMBOL_NAME (sym
) = (char *)
547 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
548 /* Open-coded memcpy--saves function call time. */
549 /* FIXME: Does it really? Try replacing with simple strcpy and
550 try it on an executable with a large symbol table. */
551 /* FIXME: considering that gcc can open code memcpy anyway, I
552 doubt it. xoxorich. */
554 register char *p1
= string
;
555 register char *p2
= SYMBOL_NAME (sym
);
563 /* If this symbol is from a C++ compilation, then attempt to cache the
564 demangled form for future reference. This is a typical time versus
565 space tradeoff, that was decided in favor of time because it sped up
566 C++ symbol lookups by a factor of about 20. */
568 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
572 /* Determine the type of name being defined. */
574 /* Getting GDB to correctly skip the symbol on an undefined symbol
575 descriptor and not ever dump core is a very dodgy proposition if
576 we do things this way. I say the acorn RISC machine can just
577 fix their compiler. */
578 /* The Acorn RISC machine's compiler can put out locals that don't
579 start with "234=" or "(3,4)=", so assume anything other than the
580 deftypes we know how to handle is a local. */
581 if (!strchr ("cfFGpPrStTvVXCR", *p
))
583 if (isdigit (*p
) || *p
== '(' || *p
== '-')
592 /* c is a special case, not followed by a type-number.
593 SYMBOL:c=iVALUE for an integer constant symbol.
594 SYMBOL:c=rVALUE for a floating constant symbol.
595 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
596 e.g. "b:c=e6,0" for "const b = blob1"
597 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
600 SYMBOL_CLASS (sym
) = LOC_CONST
;
601 SYMBOL_TYPE (sym
) = error_type (&p
);
602 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
603 add_symbol_to_list (sym
, &file_symbols
);
614 /* FIXME-if-picky-about-floating-accuracy: Should be using
615 target arithmetic to get the value. real.c in GCC
616 probably has the necessary code. */
618 /* FIXME: lookup_fundamental_type is a hack. We should be
619 creating a type especially for the type of float constants.
620 Problem is, what type should it be?
622 Also, what should the name of this type be? Should we
623 be using 'S' constants (see stabs.texinfo) instead? */
625 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
628 obstack_alloc (&objfile
-> symbol_obstack
,
629 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
630 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
631 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
632 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
637 /* Defining integer constants this way is kind of silly,
638 since 'e' constants allows the compiler to give not
639 only the value, but the type as well. C has at least
640 int, long, unsigned int, and long long as constant
641 types; other languages probably should have at least
642 unsigned as well as signed constants. */
644 /* We just need one int constant type for all objfiles.
645 It doesn't depend on languages or anything (arguably its
646 name should be a language-specific name for a type of
647 that size, but I'm inclined to say that if the compiler
648 wants a nice name for the type, it can use 'e'). */
649 static struct type
*int_const_type
;
651 /* Yes, this is as long as a *host* int. That is because we
653 if (int_const_type
== NULL
)
655 init_type (TYPE_CODE_INT
,
656 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
658 (struct objfile
*)NULL
);
659 SYMBOL_TYPE (sym
) = int_const_type
;
660 SYMBOL_VALUE (sym
) = atoi (p
);
661 SYMBOL_CLASS (sym
) = LOC_CONST
;
665 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
666 can be represented as integral.
667 e.g. "b:c=e6,0" for "const b = blob1"
668 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
670 SYMBOL_CLASS (sym
) = LOC_CONST
;
671 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
675 SYMBOL_TYPE (sym
) = error_type (&p
);
680 /* If the value is too big to fit in an int (perhaps because
681 it is unsigned), or something like that, we silently get
682 a bogus value. The type and everything else about it is
683 correct. Ideally, we should be using whatever we have
684 available for parsing unsigned and long long values,
686 SYMBOL_VALUE (sym
) = atoi (p
);
691 SYMBOL_CLASS (sym
) = LOC_CONST
;
692 SYMBOL_TYPE (sym
) = error_type (&p
);
695 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
696 add_symbol_to_list (sym
, &file_symbols
);
700 /* The name of a caught exception. */
701 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
702 SYMBOL_CLASS (sym
) = LOC_LABEL
;
703 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
704 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
705 add_symbol_to_list (sym
, &local_symbols
);
709 /* A static function definition. */
710 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
711 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
712 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
713 add_symbol_to_list (sym
, &file_symbols
);
714 /* fall into process_function_types. */
716 process_function_types
:
717 /* Function result types are described as the result type in stabs.
718 We need to convert this to the function-returning-type-X type
719 in GDB. E.g. "int" is converted to "function returning int". */
720 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
723 /* This code doesn't work -- it needs to realloc and can't. */
724 /* Attempt to set up to record a function prototype... */
725 struct type
*new = alloc_type (objfile
);
727 /* Generate a template for the type of this function. The
728 types of the arguments will be added as we read the symbol
730 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
731 SYMBOL_TYPE(sym
) = new;
732 TYPE_OBJFILE (new) = objfile
;
733 in_function_type
= new;
735 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
738 /* fall into process_prototype_types */
740 process_prototype_types
:
741 /* Sun acc puts declared types of arguments here. We don't care
742 about their actual types (FIXME -- we should remember the whole
743 function prototype), but the list may define some new types
744 that we have to remember, so we must scan it now. */
747 read_type (&p
, objfile
);
752 /* A global function definition. */
753 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
754 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
755 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
756 add_symbol_to_list (sym
, &global_symbols
);
757 goto process_function_types
;
760 /* For a class G (global) symbol, it appears that the
761 value is not correct. It is necessary to search for the
762 corresponding linker definition to find the value.
763 These definitions appear at the end of the namelist. */
764 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
765 i
= hashname (SYMBOL_NAME (sym
));
766 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
767 global_sym_chain
[i
] = sym
;
768 SYMBOL_CLASS (sym
) = LOC_STATIC
;
769 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
770 add_symbol_to_list (sym
, &global_symbols
);
773 /* This case is faked by a conditional above,
774 when there is no code letter in the dbx data.
775 Dbx data never actually contains 'l'. */
777 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
778 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
779 SYMBOL_VALUE (sym
) = valu
;
780 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
781 add_symbol_to_list (sym
, &local_symbols
);
786 /* pF is a two-letter code that means a function parameter in Fortran.
787 The type-number specifies the type of the return value.
788 Translate it into a pointer-to-function type. */
792 = lookup_pointer_type
793 (lookup_function_type (read_type (&p
, objfile
)));
796 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
798 /* Normally this is a parameter, a LOC_ARG. On the i960, it
799 can also be a LOC_LOCAL_ARG depending on symbol type. */
800 #ifndef DBX_PARM_SYMBOL_CLASS
801 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
804 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
805 SYMBOL_VALUE (sym
) = valu
;
806 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
808 /* This doesn't work yet. */
809 add_param_to_type (&in_function_type
, sym
);
811 add_symbol_to_list (sym
, &local_symbols
);
813 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
814 /* On little-endian machines, this crud is never necessary, and,
815 if the extra bytes contain garbage, is harmful. */
817 #else /* Big endian. */
818 /* If it's gcc-compiled, if it says `short', believe it. */
819 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
822 #if !BELIEVE_PCC_PROMOTION
824 /* This is the signed type which arguments get promoted to. */
825 static struct type
*pcc_promotion_type
;
826 /* This is the unsigned type which arguments get promoted to. */
827 static struct type
*pcc_unsigned_promotion_type
;
829 /* Call it "int" because this is mainly C lossage. */
830 if (pcc_promotion_type
== NULL
)
832 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
835 if (pcc_unsigned_promotion_type
== NULL
)
836 pcc_unsigned_promotion_type
=
837 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
838 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
840 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
841 /* This macro is defined on machines (e.g. sparc) where
842 we should believe the type of a PCC 'short' argument,
843 but shouldn't believe the address (the address is
844 the address of the corresponding int).
846 My guess is that this correction, as opposed to changing
847 the parameter to an 'int' (as done below, for PCC
848 on most machines), is the right thing to do
849 on all machines, but I don't want to risk breaking
850 something that already works. On most PCC machines,
851 the sparc problem doesn't come up because the calling
852 function has to zero the top bytes (not knowing whether
853 the called function wants an int or a short), so there
854 is little practical difference between an int and a short
855 (except perhaps what happens when the GDB user types
856 "print short_arg = 0x10000;").
858 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
859 actually produces the correct address (we don't need to fix it
860 up). I made this code adapt so that it will offset the symbol
861 if it was pointing at an int-aligned location and not
862 otherwise. This way you can use the same gdb for 4.0.x and
865 If the parameter is shorter than an int, and is integral
866 (e.g. char, short, or unsigned equivalent), and is claimed to
867 be passed on an integer boundary, don't believe it! Offset the
868 parameter's address to the tail-end of that integer. */
870 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
871 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
872 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
874 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
875 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
879 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
881 /* If PCC says a parameter is a short or a char,
882 it is really an int. */
883 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
884 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
887 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
888 ? pcc_unsigned_promotion_type
889 : pcc_promotion_type
;
893 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
895 #endif /* !BELIEVE_PCC_PROMOTION. */
896 #endif /* Big endian. */
899 /* acc seems to use P to delare the prototypes of functions that
900 are referenced by this file. gdb is not prepared to deal
901 with this extra information. FIXME, it ought to. */
904 read_type (&p
, objfile
);
905 goto process_prototype_types
;
910 /* Parameter which is in a register. */
911 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
912 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
913 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
914 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
916 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
917 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
919 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
920 add_symbol_to_list (sym
, &local_symbols
);
924 /* Register variable (either global or local). */
925 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
926 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
927 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
928 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
930 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
931 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
933 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
936 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
937 name to represent an argument passed in a register.
938 GCC uses 'P' for the same case. So if we find such a symbol pair
939 we combine it into one 'P' symbol.
941 But we only do this in the REG_STRUCT_HAS_ADDR case, so that
942 we can still get information about what is going on with the
943 stack (VAX for computing args_printed, using stack slots instead
944 of saved registers in backtraces, etc.).
946 Note that this code illegally combines
947 main(argc) struct foo argc; { register struct foo argc; }
948 but this case is considered pathological and causes a warning
949 from a decent compiler. */
952 && local_symbols
->nsyms
> 0
953 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
954 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
955 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
))
957 struct symbol
*prev_sym
;
958 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
959 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
960 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
962 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
963 /* Use the type from the LOC_REGISTER; that is the type
964 that is actually in that register. */
965 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
966 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
971 add_symbol_to_list (sym
, &local_symbols
);
974 add_symbol_to_list (sym
, &file_symbols
);
978 /* Static symbol at top level of file */
979 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
980 SYMBOL_CLASS (sym
) = LOC_STATIC
;
981 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
982 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
983 add_symbol_to_list (sym
, &file_symbols
);
987 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
989 /* For a nameless type, we don't want a create a symbol, thus we
990 did not use `sym'. Return without further processing. */
991 if (nameless
) return NULL
;
993 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
994 SYMBOL_VALUE (sym
) = valu
;
995 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
996 /* C++ vagaries: we may have a type which is derived from
997 a base type which did not have its name defined when the
998 derived class was output. We fill in the derived class's
999 base part member's name here in that case. */
1000 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
1001 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1002 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1003 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1006 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1007 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1008 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1009 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1012 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1014 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1015 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1017 /* If we are giving a name to a type such as "pointer to
1018 foo" or "function returning foo", we better not set
1019 the TYPE_NAME. If the program contains "typedef char
1020 *caddr_t;", we don't want all variables of type char
1021 * to print as caddr_t. This is not just a
1022 consequence of GDB's type management; PCC and GCC (at
1023 least through version 2.4) both output variables of
1024 either type char * or caddr_t with the type number
1025 defined in the 't' symbol for caddr_t. If a future
1026 compiler cleans this up it GDB is not ready for it
1027 yet, but if it becomes ready we somehow need to
1028 disable this check (without breaking the PCC/GCC2.4
1033 Fortunately, this check seems not to be necessary
1034 for anything except pointers or functions. */
1037 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1040 add_symbol_to_list (sym
, &file_symbols
);
1044 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1045 by 't' which means we are typedef'ing it as well. */
1046 synonym
= *p
== 't';
1051 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1052 strlen (SYMBOL_NAME (sym
)),
1053 &objfile
-> symbol_obstack
);
1055 /* The semantics of C++ state that "struct foo { ... }" also defines
1056 a typedef for "foo". Unfortunately, cfront never makes the typedef
1057 when translating C++ into C. We make the typedef here so that
1058 "ptype foo" works as expected for cfront translated code. */
1059 else if (current_subfile
->language
== language_cplus
)
1062 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1063 strlen (SYMBOL_NAME (sym
)),
1064 &objfile
-> symbol_obstack
);
1067 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1069 /* For a nameless type, we don't want a create a symbol, thus we
1070 did not use `sym'. Return without further processing. */
1071 if (nameless
) return NULL
;
1073 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1074 SYMBOL_VALUE (sym
) = valu
;
1075 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1076 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1077 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1078 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1079 add_symbol_to_list (sym
, &file_symbols
);
1083 /* Clone the sym and then modify it. */
1084 register struct symbol
*typedef_sym
= (struct symbol
*)
1085 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1086 *typedef_sym
= *sym
;
1087 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1088 SYMBOL_VALUE (typedef_sym
) = valu
;
1089 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1090 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1091 TYPE_NAME (SYMBOL_TYPE (sym
))
1092 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1093 add_symbol_to_list (typedef_sym
, &file_symbols
);
1098 /* Static symbol of local scope */
1099 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1100 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1101 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1102 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1103 add_symbol_to_list (sym
, &local_symbols
);
1107 /* Reference parameter */
1108 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1109 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1110 SYMBOL_VALUE (sym
) = valu
;
1111 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1112 add_symbol_to_list (sym
, &local_symbols
);
1116 /* This is used by Sun FORTRAN for "function result value".
1117 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1118 that Pascal uses it too, but when I tried it Pascal used
1119 "x:3" (local symbol) instead. */
1120 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1121 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1122 SYMBOL_VALUE (sym
) = valu
;
1123 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1124 add_symbol_to_list (sym
, &local_symbols
);
1128 SYMBOL_TYPE (sym
) = error_type (&p
);
1129 SYMBOL_CLASS (sym
) = LOC_CONST
;
1130 SYMBOL_VALUE (sym
) = 0;
1131 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1132 add_symbol_to_list (sym
, &file_symbols
);
1136 /* When passing structures to a function, some systems sometimes pass
1137 the address in a register, not the structure itself.
1139 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1140 to LOC_REGPARM_ADDR for structures and unions. */
1142 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1143 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1144 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1145 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1146 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1152 /* Skip rest of this symbol and return an error type.
1154 General notes on error recovery: error_type always skips to the
1155 end of the symbol (modulo cretinous dbx symbol name continuation).
1156 Thus code like this:
1158 if (*(*pp)++ != ';')
1159 return error_type (pp);
1161 is wrong because if *pp starts out pointing at '\0' (typically as the
1162 result of an earlier error), it will be incremented to point to the
1163 start of the next symbol, which might produce strange results, at least
1164 if you run off the end of the string table. Instead use
1167 return error_type (pp);
1173 foo = error_type (pp);
1177 And in case it isn't obvious, the point of all this hair is so the compiler
1178 can define new types and new syntaxes, and old versions of the
1179 debugger will be able to read the new symbol tables. */
1181 static struct type
*
1185 complain (&error_type_complaint
);
1188 /* Skip to end of symbol. */
1189 while (**pp
!= '\0')
1194 /* Check for and handle cretinous dbx symbol name continuation! */
1195 if ((*pp
)[-1] == '\\' || (*pp
)[-1] == '?')
1197 *pp
= next_symbol_text ();
1204 return (builtin_type_error
);
1208 /* Read type information or a type definition; return the type. Even
1209 though this routine accepts either type information or a type
1210 definition, the distinction is relevant--some parts of stabsread.c
1211 assume that type information starts with a digit, '-', or '(' in
1212 deciding whether to call read_type. */
1215 read_type (pp
, objfile
)
1217 struct objfile
*objfile
;
1219 register struct type
*type
= 0;
1223 char type_descriptor
;
1225 /* Size in bits of type if specified by a type attribute, or -1 if
1226 there is no size attribute. */
1229 /* Used to distinguish string and bitstring from char-array and set. */
1232 /* Read type number if present. The type number may be omitted.
1233 for instance in a two-dimensional array declared with type
1234 "ar1;1;10;ar1;1;10;4". */
1235 if ((**pp
>= '0' && **pp
<= '9')
1239 if (read_type_number (pp
, typenums
) != 0)
1240 return error_type (pp
);
1242 /* Type is not being defined here. Either it already exists,
1243 or this is a forward reference to it. dbx_alloc_type handles
1246 return dbx_alloc_type (typenums
, objfile
);
1248 /* Type is being defined here. */
1255 /* It might be a type attribute or a member type. */
1256 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1261 /* Type attributes. */
1264 /* Skip to the semicolon. */
1265 while (*p
!= ';' && *p
!= '\0')
1269 return error_type (pp
);
1271 /* Skip the semicolon. */
1277 type_size
= atoi (attr
+ 1);
1287 /* Ignore unrecognized type attributes, so future compilers
1288 can invent new ones. */
1293 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1298 /* 'typenums=' not present, type is anonymous. Read and return
1299 the definition, but don't put it in the type vector. */
1300 typenums
[0] = typenums
[1] = -1;
1304 type_descriptor
= (*pp
)[-1];
1305 switch (type_descriptor
)
1309 enum type_code code
;
1311 /* Used to index through file_symbols. */
1312 struct pending
*ppt
;
1315 /* Name including "struct", etc. */
1319 char *from
, *to
, *p
, *q1
, *q2
;
1321 /* Set the type code according to the following letter. */
1325 code
= TYPE_CODE_STRUCT
;
1328 code
= TYPE_CODE_UNION
;
1331 code
= TYPE_CODE_ENUM
;
1335 /* Complain and keep going, so compilers can invent new
1336 cross-reference types. */
1337 static struct complaint msg
=
1338 {"Unrecognized cross-reference type `%c'", 0, 0};
1339 complain (&msg
, (*pp
)[0]);
1340 code
= TYPE_CODE_STRUCT
;
1345 q1
= strchr(*pp
, '<');
1346 p
= strchr(*pp
, ':');
1348 return error_type (pp
);
1349 while (q1
&& p
> q1
&& p
[1] == ':')
1351 q2
= strchr(q1
, '>');
1357 return error_type (pp
);
1360 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1362 /* Copy the name. */
1368 /* Set the pointer ahead of the name which we just read, and
1373 /* Now check to see whether the type has already been
1374 declared. This was written for arrays of cross-referenced
1375 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1376 sure it is not necessary anymore. But it might be a good
1377 idea, to save a little memory. */
1379 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1380 for (i
= 0; i
< ppt
->nsyms
; i
++)
1382 struct symbol
*sym
= ppt
->symbol
[i
];
1384 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1385 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1386 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1387 && STREQ (SYMBOL_NAME (sym
), type_name
))
1389 obstack_free (&objfile
-> type_obstack
, type_name
);
1390 type
= SYMBOL_TYPE (sym
);
1395 /* Didn't find the type to which this refers, so we must
1396 be dealing with a forward reference. Allocate a type
1397 structure for it, and keep track of it so we can
1398 fill in the rest of the fields when we get the full
1400 type
= dbx_alloc_type (typenums
, objfile
);
1401 TYPE_CODE (type
) = code
;
1402 TYPE_TAG_NAME (type
) = type_name
;
1403 INIT_CPLUS_SPECIFIC(type
);
1404 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1406 add_undefined_type (type
);
1410 case '-': /* RS/6000 built-in type */
1429 /* Peek ahead at the number to detect void. */
1430 if (read_type_number (pp
, xtypenums
) != 0)
1431 return error_type (pp
);
1433 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1434 /* It's being defined as itself. That means it is "void". */
1435 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1440 /* Go back to the number and have read_type get it. This means
1441 that we can deal with something like t(1,2)=(3,4)=... which
1442 the Lucid compiler uses. */
1444 xtype
= read_type (pp
, objfile
);
1446 /* The type is being defined to another type. So we copy the type.
1447 This loses if we copy a C++ class and so we lose track of how
1448 the names are mangled (but g++ doesn't output stabs like this
1451 type
= alloc_type (objfile
);
1452 memcpy (type
, xtype
, sizeof (struct type
));
1454 /* The idea behind clearing the names is that the only purpose
1455 for defining a type to another type is so that the name of
1456 one can be different. So we probably don't need to worry much
1457 about the case where the compiler doesn't give a name to the
1459 TYPE_NAME (type
) = NULL
;
1460 TYPE_TAG_NAME (type
) = NULL
;
1462 if (typenums
[0] != -1)
1463 *dbx_lookup_type (typenums
) = type
;
1467 /* In the following types, we must be sure to overwrite any existing
1468 type that the typenums refer to, rather than allocating a new one
1469 and making the typenums point to the new one. This is because there
1470 may already be pointers to the existing type (if it had been
1471 forward-referenced), and we must change it to a pointer, function,
1472 reference, or whatever, *in-place*. */
1475 type1
= read_type (pp
, objfile
);
1476 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1479 case '&': /* Reference to another type */
1480 type1
= read_type (pp
, objfile
);
1481 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1484 case 'f': /* Function returning another type */
1485 type1
= read_type (pp
, objfile
);
1486 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1489 case 'k': /* Const qualifier on some type (Sun) */
1490 type
= read_type (pp
, objfile
);
1491 /* FIXME! For now, we ignore const and volatile qualifiers. */
1494 case 'B': /* Volatile qual on some type (Sun) */
1495 type
= read_type (pp
, objfile
);
1496 /* FIXME! For now, we ignore const and volatile qualifiers. */
1499 /* FIXME -- we should be doing smash_to_XXX types here. */
1500 case '@': /* Member (class & variable) type */
1502 struct type
*domain
= read_type (pp
, objfile
);
1503 struct type
*memtype
;
1506 /* Invalid member type data format. */
1507 return error_type (pp
);
1510 memtype
= read_type (pp
, objfile
);
1511 type
= dbx_alloc_type (typenums
, objfile
);
1512 smash_to_member_type (type
, domain
, memtype
);
1516 case '#': /* Method (class & fn) type */
1517 if ((*pp
)[0] == '#')
1519 /* We'll get the parameter types from the name. */
1520 struct type
*return_type
;
1523 return_type
= read_type (pp
, objfile
);
1524 if (*(*pp
)++ != ';')
1525 complain (&invalid_member_complaint
, symnum
);
1526 type
= allocate_stub_method (return_type
);
1527 if (typenums
[0] != -1)
1528 *dbx_lookup_type (typenums
) = type
;
1532 struct type
*domain
= read_type (pp
, objfile
);
1533 struct type
*return_type
;
1537 /* Invalid member type data format. */
1538 return error_type (pp
);
1542 return_type
= read_type (pp
, objfile
);
1543 args
= read_args (pp
, ';', objfile
);
1544 type
= dbx_alloc_type (typenums
, objfile
);
1545 smash_to_method_type (type
, domain
, return_type
, args
);
1549 case 'r': /* Range type */
1550 type
= read_range_type (pp
, typenums
, objfile
);
1551 if (typenums
[0] != -1)
1552 *dbx_lookup_type (typenums
) = type
;
1555 case 'b': /* Sun ACC builtin int type */
1556 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1557 if (typenums
[0] != -1)
1558 *dbx_lookup_type (typenums
) = type
;
1561 case 'R': /* Sun ACC builtin float type */
1562 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1563 if (typenums
[0] != -1)
1564 *dbx_lookup_type (typenums
) = type
;
1567 case 'e': /* Enumeration type */
1568 type
= dbx_alloc_type (typenums
, objfile
);
1569 type
= read_enum_type (pp
, type
, objfile
);
1570 if (typenums
[0] != -1)
1571 *dbx_lookup_type (typenums
) = type
;
1574 case 's': /* Struct type */
1575 case 'u': /* Union type */
1576 type
= dbx_alloc_type (typenums
, objfile
);
1577 if (!TYPE_NAME (type
))
1579 TYPE_NAME (type
) = type_synonym_name
;
1581 type_synonym_name
= NULL
;
1582 switch (type_descriptor
)
1585 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1588 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1591 type
= read_struct_type (pp
, type
, objfile
);
1594 case 'a': /* Array type */
1596 return error_type (pp
);
1599 type
= dbx_alloc_type (typenums
, objfile
);
1600 type
= read_array_type (pp
, type
, objfile
);
1602 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1606 type1
= read_type (pp
, objfile
);
1607 type
= create_set_type ((struct type
*) NULL
, type1
);
1609 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1610 if (typenums
[0] != -1)
1611 *dbx_lookup_type (typenums
) = type
;
1615 --*pp
; /* Go back to the symbol in error */
1616 /* Particularly important if it was \0! */
1617 return error_type (pp
);
1622 warning ("GDB internal error, type is NULL in stabsread.c\n");
1623 return error_type (pp
);
1626 /* Size specified in a type attribute overrides any other size. */
1627 if (type_size
!= -1)
1628 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1633 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1634 Return the proper type node for a given builtin type number. */
1636 static struct type
*
1637 rs6000_builtin_type (typenum
)
1640 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1641 #define NUMBER_RECOGNIZED 30
1642 /* This includes an empty slot for type number -0. */
1643 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1644 struct type
*rettype
= NULL
;
1646 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1648 complain (&rs6000_builtin_complaint
, typenum
);
1649 return builtin_type_error
;
1651 if (negative_types
[-typenum
] != NULL
)
1652 return negative_types
[-typenum
];
1654 #if TARGET_CHAR_BIT != 8
1655 #error This code wrong for TARGET_CHAR_BIT not 8
1656 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1657 that if that ever becomes not true, the correct fix will be to
1658 make the size in the struct type to be in bits, not in units of
1665 /* The size of this and all the other types are fixed, defined
1666 by the debugging format. If there is a type called "int" which
1667 is other than 32 bits, then it should use a new negative type
1668 number (or avoid negative type numbers for that case).
1669 See stabs.texinfo. */
1670 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1673 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1676 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1679 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1682 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1683 "unsigned char", NULL
);
1686 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1689 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1690 "unsigned short", NULL
);
1693 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1694 "unsigned int", NULL
);
1697 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1700 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1701 "unsigned long", NULL
);
1704 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1707 /* IEEE single precision (32 bit). */
1708 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1711 /* IEEE double precision (64 bit). */
1712 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1715 /* This is an IEEE double on the RS/6000, and different machines with
1716 different sizes for "long double" should use different negative
1717 type numbers. See stabs.texinfo. */
1718 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1721 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1724 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1727 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1730 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1733 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1736 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1740 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1744 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1748 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1752 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1756 /* Complex type consisting of two IEEE single precision values. */
1757 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1760 /* Complex type consisting of two IEEE double precision values. */
1761 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1764 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1767 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1770 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1773 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1776 negative_types
[-typenum
] = rettype
;
1780 /* This page contains subroutines of read_type. */
1782 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1783 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1784 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1785 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1787 /* Read member function stabs info for C++ classes. The form of each member
1790 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1792 An example with two member functions is:
1794 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1796 For the case of overloaded operators, the format is op$::*.funcs, where
1797 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1798 name (such as `+=') and `.' marks the end of the operator name.
1800 Returns 1 for success, 0 for failure. */
1803 read_member_functions (fip
, pp
, type
, objfile
)
1804 struct field_info
*fip
;
1807 struct objfile
*objfile
;
1811 /* Total number of member functions defined in this class. If the class
1812 defines two `f' functions, and one `g' function, then this will have
1814 int total_length
= 0;
1818 struct next_fnfield
*next
;
1819 struct fn_field fn_field
;
1821 struct type
*look_ahead_type
;
1822 struct next_fnfieldlist
*new_fnlist
;
1823 struct next_fnfield
*new_sublist
;
1827 /* Process each list until we find something that is not a member function
1828 or find the end of the functions. */
1832 /* We should be positioned at the start of the function name.
1833 Scan forward to find the first ':' and if it is not the
1834 first of a "::" delimiter, then this is not a member function. */
1846 look_ahead_type
= NULL
;
1849 new_fnlist
= (struct next_fnfieldlist
*)
1850 xmalloc (sizeof (struct next_fnfieldlist
));
1851 make_cleanup (free
, new_fnlist
);
1852 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1854 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1856 /* This is a completely wierd case. In order to stuff in the
1857 names that might contain colons (the usual name delimiter),
1858 Mike Tiemann defined a different name format which is
1859 signalled if the identifier is "op$". In that case, the
1860 format is "op$::XXXX." where XXXX is the name. This is
1861 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1862 /* This lets the user type "break operator+".
1863 We could just put in "+" as the name, but that wouldn't
1865 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1866 char *o
= opname
+ 3;
1868 /* Skip past '::'. */
1871 STABS_CONTINUE (pp
);
1877 main_fn_name
= savestring (opname
, o
- opname
);
1883 main_fn_name
= savestring (*pp
, p
- *pp
);
1884 /* Skip past '::'. */
1887 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1892 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1893 make_cleanup (free
, new_sublist
);
1894 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1896 /* Check for and handle cretinous dbx symbol name continuation! */
1897 if (look_ahead_type
== NULL
)
1900 STABS_CONTINUE (pp
);
1902 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1905 /* Invalid symtab info for member function. */
1911 /* g++ version 1 kludge */
1912 new_sublist
-> fn_field
.type
= look_ahead_type
;
1913 look_ahead_type
= NULL
;
1923 /* If this is just a stub, then we don't have the real name here. */
1925 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1927 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1928 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1929 new_sublist
-> fn_field
.is_stub
= 1;
1931 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1934 /* Set this member function's visibility fields. */
1937 case VISIBILITY_PRIVATE
:
1938 new_sublist
-> fn_field
.is_private
= 1;
1940 case VISIBILITY_PROTECTED
:
1941 new_sublist
-> fn_field
.is_protected
= 1;
1945 STABS_CONTINUE (pp
);
1948 case 'A': /* Normal functions. */
1949 new_sublist
-> fn_field
.is_const
= 0;
1950 new_sublist
-> fn_field
.is_volatile
= 0;
1953 case 'B': /* `const' member functions. */
1954 new_sublist
-> fn_field
.is_const
= 1;
1955 new_sublist
-> fn_field
.is_volatile
= 0;
1958 case 'C': /* `volatile' member function. */
1959 new_sublist
-> fn_field
.is_const
= 0;
1960 new_sublist
-> fn_field
.is_volatile
= 1;
1963 case 'D': /* `const volatile' member function. */
1964 new_sublist
-> fn_field
.is_const
= 1;
1965 new_sublist
-> fn_field
.is_volatile
= 1;
1968 case '*': /* File compiled with g++ version 1 -- no info */
1973 complain (&const_vol_complaint
, **pp
);
1982 /* virtual member function, followed by index.
1983 The sign bit is set to distinguish pointers-to-methods
1984 from virtual function indicies. Since the array is
1985 in words, the quantity must be shifted left by 1
1986 on 16 bit machine, and by 2 on 32 bit machine, forcing
1987 the sign bit out, and usable as a valid index into
1988 the array. Remove the sign bit here. */
1989 new_sublist
-> fn_field
.voffset
=
1990 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1994 STABS_CONTINUE (pp
);
1995 if (**pp
== ';' || **pp
== '\0')
1997 /* Must be g++ version 1. */
1998 new_sublist
-> fn_field
.fcontext
= 0;
2002 /* Figure out from whence this virtual function came.
2003 It may belong to virtual function table of
2004 one of its baseclasses. */
2005 look_ahead_type
= read_type (pp
, objfile
);
2008 /* g++ version 1 overloaded methods. */
2012 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2021 look_ahead_type
= NULL
;
2027 /* static member function. */
2028 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2029 if (strncmp (new_sublist
-> fn_field
.physname
,
2030 main_fn_name
, strlen (main_fn_name
)))
2032 new_sublist
-> fn_field
.is_stub
= 1;
2038 complain (&member_fn_complaint
, (*pp
)[-1]);
2039 /* Fall through into normal member function. */
2042 /* normal member function. */
2043 new_sublist
-> fn_field
.voffset
= 0;
2044 new_sublist
-> fn_field
.fcontext
= 0;
2048 new_sublist
-> next
= sublist
;
2049 sublist
= new_sublist
;
2051 STABS_CONTINUE (pp
);
2053 while (**pp
!= ';' && **pp
!= '\0');
2057 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2058 obstack_alloc (&objfile
-> type_obstack
,
2059 sizeof (struct fn_field
) * length
);
2060 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2061 sizeof (struct fn_field
) * length
);
2062 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2064 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2067 new_fnlist
-> fn_fieldlist
.length
= length
;
2068 new_fnlist
-> next
= fip
-> fnlist
;
2069 fip
-> fnlist
= new_fnlist
;
2071 total_length
+= length
;
2072 STABS_CONTINUE (pp
);
2077 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2078 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2079 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2080 memset (TYPE_FN_FIELDLISTS (type
), 0,
2081 sizeof (struct fn_fieldlist
) * nfn_fields
);
2082 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2083 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2089 /* Special GNU C++ name.
2091 Returns 1 for success, 0 for failure. "failure" means that we can't
2092 keep parsing and it's time for error_type(). */
2095 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2096 struct field_info
*fip
;
2099 struct objfile
*objfile
;
2104 struct type
*context
;
2114 /* At this point, *pp points to something like "22:23=*22...",
2115 where the type number before the ':' is the "context" and
2116 everything after is a regular type definition. Lookup the
2117 type, find it's name, and construct the field name. */
2119 context
= read_type (pp
, objfile
);
2123 case 'f': /* $vf -- a virtual function table pointer */
2124 fip
->list
->field
.name
=
2125 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2128 case 'b': /* $vb -- a virtual bsomethingorother */
2129 name
= type_name_no_tag (context
);
2132 complain (&invalid_cpp_type_complaint
, symnum
);
2135 fip
->list
->field
.name
=
2136 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2140 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2141 fip
->list
->field
.name
=
2142 obconcat (&objfile
->type_obstack
,
2143 "INVALID_CPLUSPLUS_ABBREV", "", "");
2147 /* At this point, *pp points to the ':'. Skip it and read the
2153 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2156 fip
->list
->field
.type
= read_type (pp
, objfile
);
2158 (*pp
)++; /* Skip the comma. */
2164 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2168 /* This field is unpacked. */
2169 fip
->list
->field
.bitsize
= 0;
2170 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2174 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2175 /* We have no idea what syntax an unrecognized abbrev would have, so
2176 better return 0. If we returned 1, we would need to at least advance
2177 *pp to avoid an infinite loop. */
2184 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2185 struct field_info
*fip
;
2189 struct objfile
*objfile
;
2191 fip
-> list
-> field
.name
=
2192 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2195 /* This means we have a visibility for a field coming. */
2199 fip
-> list
-> visibility
= *(*pp
)++;
2203 /* normal dbx-style format, no explicit visibility */
2204 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2207 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2212 /* Possible future hook for nested types. */
2215 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2221 /* Static class member. */
2222 fip
-> list
-> field
.bitpos
= (long) -1;
2228 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2232 else if (**pp
!= ',')
2234 /* Bad structure-type format. */
2235 complain (&stabs_general_complaint
, "bad structure-type format");
2239 (*pp
)++; /* Skip the comma. */
2243 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2246 complain (&stabs_general_complaint
, "bad structure-type format");
2249 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2252 complain (&stabs_general_complaint
, "bad structure-type format");
2257 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2259 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2260 it is a field which has been optimized out. The correct stab for
2261 this case is to use VISIBILITY_IGNORE, but that is a recent
2262 invention. (2) It is a 0-size array. For example
2263 union { int num; char str[0]; } foo. Printing "<no value>" for
2264 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2265 will continue to work, and a 0-size array as a whole doesn't
2266 have any contents to print.
2268 I suspect this probably could also happen with gcc -gstabs (not
2269 -gstabs+) for static fields, and perhaps other C++ extensions.
2270 Hopefully few people use -gstabs with gdb, since it is intended
2271 for dbx compatibility. */
2273 /* Ignore this field. */
2274 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2278 /* Detect an unpacked field and mark it as such.
2279 dbx gives a bit size for all fields.
2280 Note that forward refs cannot be packed,
2281 and treat enums as if they had the width of ints. */
2283 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2284 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2286 fip
-> list
-> field
.bitsize
= 0;
2288 if ((fip
-> list
-> field
.bitsize
2289 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2290 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2291 && (fip
-> list
-> field
.bitsize
2296 fip
-> list
-> field
.bitpos
% 8 == 0)
2298 fip
-> list
-> field
.bitsize
= 0;
2304 /* Read struct or class data fields. They have the form:
2306 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2308 At the end, we see a semicolon instead of a field.
2310 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2313 The optional VISIBILITY is one of:
2315 '/0' (VISIBILITY_PRIVATE)
2316 '/1' (VISIBILITY_PROTECTED)
2317 '/2' (VISIBILITY_PUBLIC)
2318 '/9' (VISIBILITY_IGNORE)
2320 or nothing, for C style fields with public visibility.
2322 Returns 1 for success, 0 for failure. */
2325 read_struct_fields (fip
, pp
, type
, objfile
)
2326 struct field_info
*fip
;
2329 struct objfile
*objfile
;
2332 struct nextfield
*new;
2334 /* We better set p right now, in case there are no fields at all... */
2338 /* Read each data member type until we find the terminating ';' at the end of
2339 the data member list, or break for some other reason such as finding the
2340 start of the member function list. */
2344 STABS_CONTINUE (pp
);
2345 /* Get space to record the next field's data. */
2346 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2347 make_cleanup (free
, new);
2348 memset (new, 0, sizeof (struct nextfield
));
2349 new -> next
= fip
-> list
;
2352 /* Get the field name. */
2355 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2356 unless the CPLUS_MARKER is followed by an underscore, in
2357 which case it is just the name of an anonymous type, which we
2358 should handle like any other type name. We accept either '$'
2359 or '.', because a field name can never contain one of these
2360 characters except as a CPLUS_MARKER (we probably should be
2361 doing that in most parts of GDB). */
2363 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2365 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2370 /* Look for the ':' that separates the field name from the field
2371 values. Data members are delimited by a single ':', while member
2372 functions are delimited by a pair of ':'s. When we hit the member
2373 functions (if any), terminate scan loop and return. */
2375 while (*p
!= ':' && *p
!= '\0')
2382 /* Check to see if we have hit the member functions yet. */
2387 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2389 if (p
[0] == ':' && p
[1] == ':')
2391 /* chill the list of fields: the last entry (at the head) is a
2392 partially constructed entry which we now scrub. */
2393 fip
-> list
= fip
-> list
-> next
;
2398 /* The stabs for C++ derived classes contain baseclass information which
2399 is marked by a '!' character after the total size. This function is
2400 called when we encounter the baseclass marker, and slurps up all the
2401 baseclass information.
2403 Immediately following the '!' marker is the number of base classes that
2404 the class is derived from, followed by information for each base class.
2405 For each base class, there are two visibility specifiers, a bit offset
2406 to the base class information within the derived class, a reference to
2407 the type for the base class, and a terminating semicolon.
2409 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2411 Baseclass information marker __________________|| | | | | | |
2412 Number of baseclasses __________________________| | | | | | |
2413 Visibility specifiers (2) ________________________| | | | | |
2414 Offset in bits from start of class _________________| | | | |
2415 Type number for base class ___________________________| | | |
2416 Visibility specifiers (2) _______________________________| | |
2417 Offset in bits from start of class ________________________| |
2418 Type number of base class ____________________________________|
2420 Return 1 for success, 0 for (error-type-inducing) failure. */
2423 read_baseclasses (fip
, pp
, type
, objfile
)
2424 struct field_info
*fip
;
2427 struct objfile
*objfile
;
2430 struct nextfield
*new;
2438 /* Skip the '!' baseclass information marker. */
2442 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2445 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2451 /* Some stupid compilers have trouble with the following, so break
2452 it up into simpler expressions. */
2453 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2454 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2457 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2460 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2461 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2465 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2467 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2469 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2470 make_cleanup (free
, new);
2471 memset (new, 0, sizeof (struct nextfield
));
2472 new -> next
= fip
-> list
;
2474 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2476 STABS_CONTINUE (pp
);
2480 /* Nothing to do. */
2483 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2486 /* Unknown character. Complain and treat it as non-virtual. */
2488 static struct complaint msg
= {
2489 "Unknown virtual character `%c' for baseclass", 0, 0};
2490 complain (&msg
, **pp
);
2495 new -> visibility
= *(*pp
)++;
2496 switch (new -> visibility
)
2498 case VISIBILITY_PRIVATE
:
2499 case VISIBILITY_PROTECTED
:
2500 case VISIBILITY_PUBLIC
:
2503 /* Bad visibility format. Complain and treat it as
2506 static struct complaint msg
= {
2507 "Unknown visibility `%c' for baseclass", 0, 0};
2508 complain (&msg
, new -> visibility
);
2509 new -> visibility
= VISIBILITY_PUBLIC
;
2516 /* The remaining value is the bit offset of the portion of the object
2517 corresponding to this baseclass. Always zero in the absence of
2518 multiple inheritance. */
2520 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2525 /* The last piece of baseclass information is the type of the
2526 base class. Read it, and remember it's type name as this
2529 new -> field
.type
= read_type (pp
, objfile
);
2530 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2532 /* skip trailing ';' and bump count of number of fields seen */
2541 /* The tail end of stabs for C++ classes that contain a virtual function
2542 pointer contains a tilde, a %, and a type number.
2543 The type number refers to the base class (possibly this class itself) which
2544 contains the vtable pointer for the current class.
2546 This function is called when we have parsed all the method declarations,
2547 so we can look for the vptr base class info. */
2550 read_tilde_fields (fip
, pp
, type
, objfile
)
2551 struct field_info
*fip
;
2554 struct objfile
*objfile
;
2558 STABS_CONTINUE (pp
);
2560 /* If we are positioned at a ';', then skip it. */
2570 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2572 /* Obsolete flags that used to indicate the presence
2573 of constructors and/or destructors. */
2577 /* Read either a '%' or the final ';'. */
2578 if (*(*pp
)++ == '%')
2580 /* The next number is the type number of the base class
2581 (possibly our own class) which supplies the vtable for
2582 this class. Parse it out, and search that class to find
2583 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2584 and TYPE_VPTR_FIELDNO. */
2589 t
= read_type (pp
, objfile
);
2591 while (*p
!= '\0' && *p
!= ';')
2597 /* Premature end of symbol. */
2601 TYPE_VPTR_BASETYPE (type
) = t
;
2602 if (type
== t
) /* Our own class provides vtbl ptr */
2604 for (i
= TYPE_NFIELDS (t
) - 1;
2605 i
>= TYPE_N_BASECLASSES (t
);
2608 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2609 sizeof (vptr_name
) - 1))
2611 TYPE_VPTR_FIELDNO (type
) = i
;
2615 /* Virtual function table field not found. */
2616 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2621 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2632 attach_fn_fields_to_type (fip
, type
)
2633 struct field_info
*fip
;
2634 register struct type
*type
;
2638 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2640 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2642 /* @@ Memory leak on objfile -> type_obstack? */
2645 TYPE_NFN_FIELDS_TOTAL (type
) +=
2646 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2649 for (n
= TYPE_NFN_FIELDS (type
);
2650 fip
-> fnlist
!= NULL
;
2651 fip
-> fnlist
= fip
-> fnlist
-> next
)
2653 --n
; /* Circumvent Sun3 compiler bug */
2654 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2659 /* Create the vector of fields, and record how big it is.
2660 We need this info to record proper virtual function table information
2661 for this class's virtual functions. */
2664 attach_fields_to_type (fip
, type
, objfile
)
2665 struct field_info
*fip
;
2666 register struct type
*type
;
2667 struct objfile
*objfile
;
2669 register int nfields
= 0;
2670 register int non_public_fields
= 0;
2671 register struct nextfield
*scan
;
2673 /* Count up the number of fields that we have, as well as taking note of
2674 whether or not there are any non-public fields, which requires us to
2675 allocate and build the private_field_bits and protected_field_bits
2678 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2681 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2683 non_public_fields
++;
2687 /* Now we know how many fields there are, and whether or not there are any
2688 non-public fields. Record the field count, allocate space for the
2689 array of fields, and create blank visibility bitfields if necessary. */
2691 TYPE_NFIELDS (type
) = nfields
;
2692 TYPE_FIELDS (type
) = (struct field
*)
2693 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2694 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2696 if (non_public_fields
)
2698 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2700 TYPE_FIELD_PRIVATE_BITS (type
) =
2701 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2702 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2704 TYPE_FIELD_PROTECTED_BITS (type
) =
2705 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2706 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2708 TYPE_FIELD_IGNORE_BITS (type
) =
2709 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2710 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2713 /* Copy the saved-up fields into the field vector. Start from the head
2714 of the list, adding to the tail of the field array, so that they end
2715 up in the same order in the array in which they were added to the list. */
2717 while (nfields
-- > 0)
2719 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2720 switch (fip
-> list
-> visibility
)
2722 case VISIBILITY_PRIVATE
:
2723 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2726 case VISIBILITY_PROTECTED
:
2727 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2730 case VISIBILITY_IGNORE
:
2731 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2734 case VISIBILITY_PUBLIC
:
2738 /* Unknown visibility. Complain and treat it as public. */
2740 static struct complaint msg
= {
2741 "Unknown visibility `%c' for field", 0, 0};
2742 complain (&msg
, fip
-> list
-> visibility
);
2746 fip
-> list
= fip
-> list
-> next
;
2751 /* Read the description of a structure (or union type) and return an object
2752 describing the type.
2754 PP points to a character pointer that points to the next unconsumed token
2755 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2756 *PP will point to "4a:1,0,32;;".
2758 TYPE points to an incomplete type that needs to be filled in.
2760 OBJFILE points to the current objfile from which the stabs information is
2761 being read. (Note that it is redundant in that TYPE also contains a pointer
2762 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2765 static struct type
*
2766 read_struct_type (pp
, type
, objfile
)
2769 struct objfile
*objfile
;
2771 struct cleanup
*back_to
;
2772 struct field_info fi
;
2777 back_to
= make_cleanup (null_cleanup
, 0);
2779 INIT_CPLUS_SPECIFIC (type
);
2780 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2782 /* First comes the total size in bytes. */
2786 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2788 return error_type (pp
);
2791 /* Now read the baseclasses, if any, read the regular C struct or C++
2792 class member fields, attach the fields to the type, read the C++
2793 member functions, attach them to the type, and then read any tilde
2794 field (baseclass specifier for the class holding the main vtable). */
2796 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2797 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2798 || !attach_fields_to_type (&fi
, type
, objfile
)
2799 || !read_member_functions (&fi
, pp
, type
, objfile
)
2800 || !attach_fn_fields_to_type (&fi
, type
)
2801 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2803 do_cleanups (back_to
);
2804 return (error_type (pp
));
2807 do_cleanups (back_to
);
2811 /* Read a definition of an array type,
2812 and create and return a suitable type object.
2813 Also creates a range type which represents the bounds of that
2816 static struct type
*
2817 read_array_type (pp
, type
, objfile
)
2819 register struct type
*type
;
2820 struct objfile
*objfile
;
2822 struct type
*index_type
, *element_type
, *range_type
;
2827 /* Format of an array type:
2828 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2831 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2832 for these, produce a type like float[][]. */
2834 index_type
= read_type (pp
, objfile
);
2836 /* Improper format of array type decl. */
2837 return error_type (pp
);
2840 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2845 lower
= read_huge_number (pp
, ';', &nbits
);
2847 return error_type (pp
);
2849 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2854 upper
= read_huge_number (pp
, ';', &nbits
);
2856 return error_type (pp
);
2858 element_type
= read_type (pp
, objfile
);
2867 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2868 type
= create_array_type (type
, element_type
, range_type
);
2870 /* If we have an array whose element type is not yet known, but whose
2871 bounds *are* known, record it to be adjusted at the end of the file. */
2872 /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
2873 the two have the same effect except that the latter is cleaner and the
2874 former would be wrong for types which really are zero-length (if we
2877 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2879 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2880 add_undefined_type (type
);
2887 /* Read a definition of an enumeration type,
2888 and create and return a suitable type object.
2889 Also defines the symbols that represent the values of the type. */
2891 static struct type
*
2892 read_enum_type (pp
, type
, objfile
)
2894 register struct type
*type
;
2895 struct objfile
*objfile
;
2900 register struct symbol
*sym
;
2902 struct pending
**symlist
;
2903 struct pending
*osyms
, *syms
;
2907 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2908 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2909 to do? For now, force all enum values to file scope. */
2910 if (within_function
)
2911 symlist
= &local_symbols
;
2914 symlist
= &file_symbols
;
2916 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2918 /* Read the value-names and their values.
2919 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2920 A semicolon or comma instead of a NAME means the end. */
2921 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2924 STABS_CONTINUE (pp
);
2926 while (*p
!= ':') p
++;
2927 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2929 n
= read_huge_number (pp
, ',', &nbits
);
2931 return error_type (pp
);
2933 sym
= (struct symbol
*)
2934 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2935 memset (sym
, 0, sizeof (struct symbol
));
2936 SYMBOL_NAME (sym
) = name
;
2937 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2938 SYMBOL_CLASS (sym
) = LOC_CONST
;
2939 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2940 SYMBOL_VALUE (sym
) = n
;
2941 add_symbol_to_list (sym
, symlist
);
2946 (*pp
)++; /* Skip the semicolon. */
2948 /* Now fill in the fields of the type-structure. */
2950 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
2951 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2952 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2953 TYPE_NFIELDS (type
) = nsyms
;
2954 TYPE_FIELDS (type
) = (struct field
*)
2955 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2956 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2958 /* Find the symbols for the values and put them into the type.
2959 The symbols can be found in the symlist that we put them on
2960 to cause them to be defined. osyms contains the old value
2961 of that symlist; everything up to there was defined by us. */
2962 /* Note that we preserve the order of the enum constants, so
2963 that in something like "enum {FOO, LAST_THING=FOO}" we print
2964 FOO, not LAST_THING. */
2966 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2971 for (; j
< syms
->nsyms
; j
++,n
++)
2973 struct symbol
*xsym
= syms
->symbol
[j
];
2974 SYMBOL_TYPE (xsym
) = type
;
2975 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2976 TYPE_FIELD_VALUE (type
, n
) = 0;
2977 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2978 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2987 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2988 typedefs in every file (for int, long, etc):
2990 type = b <signed> <width>; <offset>; <nbits>
2991 signed = u or s. Possible c in addition to u or s (for char?).
2992 offset = offset from high order bit to start bit of type.
2993 width is # bytes in object of this type, nbits is # bits in type.
2995 The width/offset stuff appears to be for small objects stored in
2996 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
2999 static struct type
*
3000 read_sun_builtin_type (pp
, typenums
, objfile
)
3003 struct objfile
*objfile
;
3018 return error_type (pp
);
3022 /* For some odd reason, all forms of char put a c here. This is strange
3023 because no other type has this honor. We can safely ignore this because
3024 we actually determine 'char'acterness by the number of bits specified in
3030 /* The first number appears to be the number of bytes occupied
3031 by this type, except that unsigned short is 4 instead of 2.
3032 Since this information is redundant with the third number,
3033 we will ignore it. */
3034 read_huge_number (pp
, ';', &nbits
);
3036 return error_type (pp
);
3038 /* The second number is always 0, so ignore it too. */
3039 read_huge_number (pp
, ';', &nbits
);
3041 return error_type (pp
);
3043 /* The third number is the number of bits for this type. */
3044 type_bits
= read_huge_number (pp
, 0, &nbits
);
3046 return error_type (pp
);
3047 /* The type *should* end with a semicolon. If it are embedded
3048 in a larger type the semicolon may be the only way to know where
3049 the type ends. If this type is at the end of the stabstring we
3050 can deal with the omitted semicolon (but we don't have to like
3051 it). Don't bother to complain(), Sun's compiler omits the semicolon
3056 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3057 type_bits
/ TARGET_CHAR_BIT
,
3058 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3062 static struct type
*
3063 read_sun_floating_type (pp
, typenums
, objfile
)
3066 struct objfile
*objfile
;
3072 /* The first number has more details about the type, for example
3074 details
= read_huge_number (pp
, ';', &nbits
);
3076 return error_type (pp
);
3078 /* The second number is the number of bytes occupied by this type */
3079 nbytes
= read_huge_number (pp
, ';', &nbits
);
3081 return error_type (pp
);
3083 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3084 || details
== NF_COMPLEX32
)
3085 /* This is a type we can't handle, but we do know the size.
3086 We also will be able to give it a name. */
3087 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3089 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3092 /* Read a number from the string pointed to by *PP.
3093 The value of *PP is advanced over the number.
3094 If END is nonzero, the character that ends the
3095 number must match END, or an error happens;
3096 and that character is skipped if it does match.
3097 If END is zero, *PP is left pointing to that character.
3099 If the number fits in a long, set *BITS to 0 and return the value.
3100 If not, set *BITS to be the number of bits in the number and return 0.
3102 If encounter garbage, set *BITS to -1 and return 0. */
3105 read_huge_number (pp
, end
, bits
)
3125 /* Leading zero means octal. GCC uses this to output values larger
3126 than an int (because that would be hard in decimal). */
3133 upper_limit
= LONG_MAX
/ radix
;
3134 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3136 if (n
<= upper_limit
)
3139 n
+= c
- '0'; /* FIXME this overflows anyway */
3144 /* This depends on large values being output in octal, which is
3151 /* Ignore leading zeroes. */
3155 else if (c
== '2' || c
== '3')
3181 /* Large decimal constants are an error (because it is hard to
3182 count how many bits are in them). */
3188 /* -0x7f is the same as 0x80. So deal with it by adding one to
3189 the number of bits. */
3201 /* It's *BITS which has the interesting information. */
3205 static struct type
*
3206 read_range_type (pp
, typenums
, objfile
)
3209 struct objfile
*objfile
;
3215 struct type
*result_type
;
3216 struct type
*index_type
;
3218 /* First comes a type we are a subrange of.
3219 In C it is usually 0, 1 or the type being defined. */
3220 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3221 not just a type number. */
3222 if (read_type_number (pp
, rangenums
) != 0)
3223 return error_type (pp
);
3224 self_subrange
= (rangenums
[0] == typenums
[0] &&
3225 rangenums
[1] == typenums
[1]);
3227 /* A semicolon should now follow; skip it. */
3231 /* The remaining two operands are usually lower and upper bounds
3232 of the range. But in some special cases they mean something else. */
3233 n2
= read_huge_number (pp
, ';', &n2bits
);
3234 n3
= read_huge_number (pp
, ';', &n3bits
);
3236 if (n2bits
== -1 || n3bits
== -1)
3237 return error_type (pp
);
3239 /* If limits are huge, must be large integral type. */
3240 if (n2bits
!= 0 || n3bits
!= 0)
3242 char got_signed
= 0;
3243 char got_unsigned
= 0;
3244 /* Number of bits in the type. */
3247 /* Range from 0 to <large number> is an unsigned large integral type. */
3248 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3253 /* Range from <large number> to <large number>-1 is a large signed
3254 integral type. Take care of the case where <large number> doesn't
3255 fit in a long but <large number>-1 does. */
3256 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3257 || (n2bits
!= 0 && n3bits
== 0
3258 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3265 if (got_signed
|| got_unsigned
)
3267 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3268 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3272 return error_type (pp
);
3275 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3276 if (self_subrange
&& n2
== 0 && n3
== 0)
3277 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3279 /* If n3 is zero and n2 is not, we want a floating type,
3280 and n2 is the width in bytes.
3282 Fortran programs appear to use this for complex types also,
3283 and they give no way to distinguish between double and single-complex!
3285 GDB does not have complex types.
3287 Just return the complex as a float of that size. It won't work right
3288 for the complex values, but at least it makes the file loadable. */
3290 if (n3
== 0 && n2
> 0)
3292 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3295 /* If the upper bound is -1, it must really be an unsigned int. */
3297 else if (n2
== 0 && n3
== -1)
3299 /* It is unsigned int or unsigned long. */
3300 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3301 compatibility hack. */
3302 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3303 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3306 /* Special case: char is defined (Who knows why) as a subrange of
3307 itself with range 0-127. */
3308 else if (self_subrange
&& n2
== 0 && n3
== 127)
3309 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3311 /* We used to do this only for subrange of self or subrange of int. */
3315 /* n3 actually gives the size. */
3316 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3319 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3321 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3323 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3324 "unsigned long", and we already checked for that,
3325 so don't need to test for it here. */
3327 /* I think this is for Convex "long long". Since I don't know whether
3328 Convex sets self_subrange, I also accept that particular size regardless
3329 of self_subrange. */
3330 else if (n3
== 0 && n2
< 0
3332 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3333 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3334 else if (n2
== -n3
-1)
3337 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3339 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3340 if (n3
== 0x7fffffff)
3341 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3344 /* We have a real range type on our hands. Allocate space and
3345 return a real pointer. */
3347 /* At this point I don't have the faintest idea how to deal with
3348 a self_subrange type; I'm going to assume that this is used
3349 as an idiom, and that all of them are special cases. So . . . */
3351 return error_type (pp
);
3353 index_type
= *dbx_lookup_type (rangenums
);
3354 if (index_type
== NULL
)
3356 /* Does this actually ever happen? Is that why we are worrying
3357 about dealing with it rather than just calling error_type? */
3359 static struct type
*range_type_index
;
3361 complain (&range_type_base_complaint
, rangenums
[1]);
3362 if (range_type_index
== NULL
)
3364 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3365 0, "range type index type", NULL
);
3366 index_type
= range_type_index
;
3369 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3370 return (result_type
);
3373 /* Read in an argument list. This is a list of types, separated by commas
3374 and terminated with END. Return the list of types read in, or (struct type
3375 **)-1 if there is an error. */
3377 static struct type
**
3378 read_args (pp
, end
, objfile
)
3381 struct objfile
*objfile
;
3383 /* FIXME! Remove this arbitrary limit! */
3384 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3390 /* Invalid argument list: no ','. */
3391 return (struct type
**)-1;
3393 STABS_CONTINUE (pp
);
3394 types
[n
++] = read_type (pp
, objfile
);
3396 (*pp
)++; /* get past `end' (the ':' character) */
3400 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3402 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3404 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3405 memset (rval
+ n
, 0, sizeof (struct type
*));
3409 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3411 memcpy (rval
, types
, n
* sizeof (struct type
*));
3415 /* Common block handling. */
3417 /* List of symbols declared since the last BCOMM. This list is a tail
3418 of local_symbols. When ECOMM is seen, the symbols on the list
3419 are noted so their proper addresses can be filled in later,
3420 using the common block base address gotten from the assembler
3423 static struct pending
*common_block
;
3424 static int common_block_i
;
3426 /* Name of the current common block. We get it from the BCOMM instead of the
3427 ECOMM to match IBM documentation (even though IBM puts the name both places
3428 like everyone else). */
3429 static char *common_block_name
;
3431 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3432 to remain after this function returns. */
3435 common_block_start (name
, objfile
)
3437 struct objfile
*objfile
;
3439 if (common_block_name
!= NULL
)
3441 static struct complaint msg
= {
3442 "Invalid symbol data: common block within common block",
3446 common_block
= local_symbols
;
3447 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3448 common_block_name
= obsavestring (name
, strlen (name
),
3449 &objfile
-> symbol_obstack
);
3452 /* Process a N_ECOMM symbol. */
3455 common_block_end (objfile
)
3456 struct objfile
*objfile
;
3458 /* Symbols declared since the BCOMM are to have the common block
3459 start address added in when we know it. common_block and
3460 common_block_i point to the first symbol after the BCOMM in
3461 the local_symbols list; copy the list and hang it off the
3462 symbol for the common block name for later fixup. */
3465 struct pending
*new = 0;
3466 struct pending
*next
;
3469 if (common_block_name
== NULL
)
3471 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3476 sym
= (struct symbol
*)
3477 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3478 memset (sym
, 0, sizeof (struct symbol
));
3479 SYMBOL_NAME (sym
) = common_block_name
;
3480 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3482 /* Now we copy all the symbols which have been defined since the BCOMM. */
3484 /* Copy all the struct pendings before common_block. */
3485 for (next
= local_symbols
;
3486 next
!= NULL
&& next
!= common_block
;
3489 for (j
= 0; j
< next
->nsyms
; j
++)
3490 add_symbol_to_list (next
->symbol
[j
], &new);
3493 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3494 NULL, it means copy all the local symbols (which we already did
3497 if (common_block
!= NULL
)
3498 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3499 add_symbol_to_list (common_block
->symbol
[j
], &new);
3501 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long) new);
3503 /* Should we be putting local_symbols back to what it was?
3506 i
= hashname (SYMBOL_NAME (sym
));
3507 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3508 global_sym_chain
[i
] = sym
;
3509 common_block_name
= NULL
;
3512 /* Add a common block's start address to the offset of each symbol
3513 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3514 the common block name). */
3517 fix_common_block (sym
, valu
)
3521 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3522 for ( ; next
; next
= next
->next
)
3525 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3526 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3532 /* What about types defined as forward references inside of a small lexical
3534 /* Add a type to the list of undefined types to be checked through
3535 once this file has been read in. */
3538 add_undefined_type (type
)
3541 if (undef_types_length
== undef_types_allocated
)
3543 undef_types_allocated
*= 2;
3544 undef_types
= (struct type
**)
3545 xrealloc ((char *) undef_types
,
3546 undef_types_allocated
* sizeof (struct type
*));
3548 undef_types
[undef_types_length
++] = type
;
3551 /* Go through each undefined type, see if it's still undefined, and fix it
3552 up if possible. We have two kinds of undefined types:
3554 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3555 Fix: update array length using the element bounds
3556 and the target type's length.
3557 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3558 yet defined at the time a pointer to it was made.
3559 Fix: Do a full lookup on the struct/union tag. */
3561 cleanup_undefined_types ()
3565 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3567 switch (TYPE_CODE (*type
))
3570 case TYPE_CODE_STRUCT
:
3571 case TYPE_CODE_UNION
:
3572 case TYPE_CODE_ENUM
:
3574 /* Check if it has been defined since. Need to do this here
3575 as well as in check_stub_type to deal with the (legitimate in
3576 C though not C++) case of several types with the same name
3577 in different source files. */
3578 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3580 struct pending
*ppt
;
3582 /* Name of the type, without "struct" or "union" */
3583 char *typename
= TYPE_TAG_NAME (*type
);
3585 if (typename
== NULL
)
3587 static struct complaint msg
= {"need a type name", 0, 0};
3591 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3593 for (i
= 0; i
< ppt
->nsyms
; i
++)
3595 struct symbol
*sym
= ppt
->symbol
[i
];
3597 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3598 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3599 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3601 && STREQ (SYMBOL_NAME (sym
), typename
))
3603 memcpy (*type
, SYMBOL_TYPE (sym
),
3604 sizeof (struct type
));
3612 case TYPE_CODE_ARRAY
:
3614 /* This is a kludge which is here for historical reasons
3615 because I suspect that check_stub_type does not get
3616 called everywhere it needs to be called for arrays. Even
3617 with this kludge, those places are broken for the case
3618 where the stub type is defined in another compilation
3619 unit, but this kludge at least deals with it for the case
3620 in which it is the same compilation unit.
3622 Don't try to do this by calling check_stub_type; it might
3623 cause symbols to be read in lookup_symbol, and the symbol
3624 reader is not reentrant. */
3626 struct type
*range_type
;
3629 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3631 if (TYPE_NFIELDS (*type
) != 1)
3633 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3634 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3637 /* Now recompute the length of the array type, based on its
3638 number of elements and the target type's length. */
3639 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3640 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3641 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3642 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3644 /* If the target type is not a stub, we could be clearing
3645 TYPE_FLAG_TARGET_STUB for *type. */
3652 static struct complaint msg
= {"\
3653 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3654 complain (&msg
, TYPE_CODE (*type
));
3660 undef_types_length
= 0;
3663 /* Scan through all of the global symbols defined in the object file,
3664 assigning values to the debugging symbols that need to be assigned
3665 to. Get these symbols from the minimal symbol table. */
3668 scan_file_globals (objfile
)
3669 struct objfile
*objfile
;
3672 struct minimal_symbol
*msymbol
;
3673 struct symbol
*sym
, *prev
;
3675 if (objfile
->msymbols
== 0) /* Beware the null file. */
3678 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3684 /* Get the hash index and check all the symbols
3685 under that hash index. */
3687 hash
= hashname (SYMBOL_NAME (msymbol
));
3689 for (sym
= global_sym_chain
[hash
]; sym
;)
3691 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3692 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3694 /* Splice this symbol out of the hash chain and
3695 assign the value we have to it. */
3698 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3702 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3705 /* Check to see whether we need to fix up a common block. */
3706 /* Note: this code might be executed several times for
3707 the same symbol if there are multiple references. */
3709 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3711 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3715 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3720 sym
= SYMBOL_VALUE_CHAIN (prev
);
3724 sym
= global_sym_chain
[hash
];
3730 sym
= SYMBOL_VALUE_CHAIN (sym
);
3736 /* Initialize anything that needs initializing when starting to read
3737 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3745 /* Initialize anything that needs initializing when a completely new
3746 symbol file is specified (not just adding some symbols from another
3747 file, e.g. a shared library). */
3750 stabsread_new_init ()
3752 /* Empty the hash table of global syms looking for values. */
3753 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3756 /* Initialize anything that needs initializing at the same time as
3757 start_symtab() is called. */
3761 global_stabs
= NULL
; /* AIX COFF */
3762 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3763 n_this_object_header_files
= 1;
3764 type_vector_length
= 0;
3765 type_vector
= (struct type
**) 0;
3767 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3768 common_block_name
= NULL
;
3771 /* Call after end_symtab() */
3777 free ((char *) type_vector
);
3780 type_vector_length
= 0;
3781 previous_stab_code
= 0;
3785 finish_global_stabs (objfile
)
3786 struct objfile
*objfile
;
3790 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3791 free ((PTR
) global_stabs
);
3792 global_stabs
= NULL
;
3796 /* Initializer for this module */
3799 _initialize_stabsread ()
3801 undef_types_allocated
= 20;
3802 undef_types_length
= 0;
3803 undef_types
= (struct type
**)
3804 xmalloc (undef_types_allocated
* sizeof (struct type
*));