1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
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. */
34 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
36 #include "complaints.h"
41 /* Ask stabsread.h to define the vars it normally declares `extern'. */
43 #include "stabsread.h" /* Our own declarations */
46 /* The routines that read and process a complete stabs for a C struct or
47 C++ class pass lists of data member fields and lists of member function
48 fields in an instance of a field_info structure, as defined below.
49 This is part of some reorganization of low level C++ support and is
50 expected to eventually go away... (FIXME) */
56 struct nextfield
*next
;
58 /* This is the raw visibility from the stab. It is not checked
59 for being one of the visibilities we recognize, so code which
60 examines this field better be able to deal. */
65 struct next_fnfieldlist
67 struct next_fnfieldlist
*next
;
68 struct fn_fieldlist fn_fieldlist
;
73 dbx_alloc_type
PARAMS ((int [2], struct objfile
*));
75 static long read_huge_number
PARAMS ((char **, int, int *));
77 static struct type
*error_type
PARAMS ((char **));
80 patch_block_stabs
PARAMS ((struct pending
*, struct pending_stabs
*,
84 fix_common_block
PARAMS ((struct symbol
*, int));
87 read_type_number
PARAMS ((char **, int *));
90 read_range_type
PARAMS ((char **, int [2], struct objfile
*));
93 read_sun_builtin_type
PARAMS ((char **, int [2], struct objfile
*));
96 read_sun_floating_type
PARAMS ((char **, int [2], struct objfile
*));
99 read_enum_type
PARAMS ((char **, struct type
*, struct objfile
*));
102 rs6000_builtin_type
PARAMS ((int));
105 read_member_functions
PARAMS ((struct field_info
*, char **, struct type
*,
109 read_struct_fields
PARAMS ((struct field_info
*, char **, struct type
*,
113 read_baseclasses
PARAMS ((struct field_info
*, char **, struct type
*,
117 read_tilde_fields
PARAMS ((struct field_info
*, char **, struct type
*,
121 attach_fn_fields_to_type
PARAMS ((struct field_info
*, struct type
*));
124 attach_fields_to_type
PARAMS ((struct field_info
*, struct type
*,
128 read_struct_type
PARAMS ((char **, struct type
*, struct objfile
*));
131 read_array_type
PARAMS ((char **, struct type
*, struct objfile
*));
133 static struct type
**
134 read_args
PARAMS ((char **, int, struct objfile
*));
137 read_cpp_abbrev
PARAMS ((struct field_info
*, char **, struct type
*,
140 static const char vptr_name
[] = { '_','v','p','t','r',CPLUS_MARKER
,'\0' };
141 static const char vb_name
[] = { '_','v','b',CPLUS_MARKER
,'\0' };
143 /* Define this as 1 if a pcc declaration of a char or short argument
144 gives the correct address. Otherwise assume pcc gives the
145 address of the corresponding int, which is not the same on a
146 big-endian machine. */
148 #ifndef BELIEVE_PCC_PROMOTION
149 #define BELIEVE_PCC_PROMOTION 0
152 struct complaint invalid_cpp_abbrev_complaint
=
153 {"invalid C++ abbreviation `%s'", 0, 0};
155 struct complaint invalid_cpp_type_complaint
=
156 {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
158 struct complaint member_fn_complaint
=
159 {"member function type missing, got '%c'", 0, 0};
161 struct complaint const_vol_complaint
=
162 {"const/volatile indicator missing, got '%c'", 0, 0};
164 struct complaint error_type_complaint
=
165 {"debug info mismatch between compiler and debugger", 0, 0};
167 struct complaint invalid_member_complaint
=
168 {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
170 struct complaint range_type_base_complaint
=
171 {"base type %d of range type is not defined", 0, 0};
173 struct complaint reg_value_complaint
=
174 {"register number too large in symbol %s", 0, 0};
176 struct complaint vtbl_notfound_complaint
=
177 {"virtual function table pointer not found when defining class `%s'", 0, 0};
179 struct complaint unrecognized_cplus_name_complaint
=
180 {"Unknown C++ symbol name `%s'", 0, 0};
182 struct complaint rs6000_builtin_complaint
=
183 {"Unknown builtin type %d", 0, 0};
185 struct complaint stabs_general_complaint
=
188 /* Make a list of forward references which haven't been defined. */
190 static struct type
**undef_types
;
191 static int undef_types_allocated
;
192 static int undef_types_length
;
194 /* Check for and handle cretinous stabs symbol name continuation! */
195 #define STABS_CONTINUE(pp) \
197 if (**(pp) == '\\') *(pp) = next_symbol_text (); \
201 /* Look up a dbx type-number pair. Return the address of the slot
202 where the type for that number-pair is stored.
203 The number-pair is in TYPENUMS.
205 This can be used for finding the type associated with that pair
206 or for associating a new type with the pair. */
209 dbx_lookup_type (typenums
)
212 register int filenum
= typenums
[0];
213 register int index
= typenums
[1];
215 register int real_filenum
;
216 register struct header_file
*f
;
219 if (filenum
== -1) /* -1,-1 is for temporary types. */
222 if (filenum
< 0 || filenum
>= n_this_object_header_files
)
224 static struct complaint msg
= {"\
225 Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
227 complain (&msg
, filenum
, index
, symnum
);
235 /* Caller wants address of address of type. We think
236 that negative (rs6k builtin) types will never appear as
237 "lvalues", (nor should they), so we stuff the real type
238 pointer into a temp, and return its address. If referenced,
239 this will do the right thing. */
240 static struct type
*temp_type
;
242 temp_type
= rs6000_builtin_type(index
);
246 /* Type is defined outside of header files.
247 Find it in this object file's type vector. */
248 if (index
>= type_vector_length
)
250 old_len
= type_vector_length
;
253 type_vector_length
= INITIAL_TYPE_VECTOR_LENGTH
;
254 type_vector
= (struct type
**)
255 malloc (type_vector_length
* sizeof (struct type
*));
257 while (index
>= type_vector_length
)
259 type_vector_length
*= 2;
261 type_vector
= (struct type
**)
262 xrealloc ((char *) type_vector
,
263 (type_vector_length
* sizeof (struct type
*)));
264 memset (&type_vector
[old_len
], 0,
265 (type_vector_length
- old_len
) * sizeof (struct type
*));
267 return (&type_vector
[index
]);
271 real_filenum
= this_object_header_files
[filenum
];
273 if (real_filenum
>= n_header_files
)
275 struct type
*temp_type
;
276 struct type
**temp_type_p
;
278 warning ("GDB internal error: bad real_filenum");
281 temp_type
= init_type (TYPE_CODE_ERROR
, 0, 0, NULL
, NULL
);
282 temp_type_p
= (struct type
**) xmalloc (sizeof (struct type
*));
283 *temp_type_p
= temp_type
;
287 f
= &header_files
[real_filenum
];
289 f_orig_length
= f
->length
;
290 if (index
>= f_orig_length
)
292 while (index
>= f
->length
)
296 f
->vector
= (struct type
**)
297 xrealloc ((char *) f
->vector
, f
->length
* sizeof (struct type
*));
298 memset (&f
->vector
[f_orig_length
], 0,
299 (f
->length
- f_orig_length
) * sizeof (struct type
*));
301 return (&f
->vector
[index
]);
305 /* Make sure there is a type allocated for type numbers TYPENUMS
306 and return the type object.
307 This can create an empty (zeroed) type object.
308 TYPENUMS may be (-1, -1) to return a new type object that is not
309 put into the type vector, and so may not be referred to by number. */
312 dbx_alloc_type (typenums
, objfile
)
314 struct objfile
*objfile
;
316 register struct type
**type_addr
;
318 if (typenums
[0] == -1)
320 return (alloc_type (objfile
));
323 type_addr
= dbx_lookup_type (typenums
);
325 /* If we are referring to a type not known at all yet,
326 allocate an empty type for it.
327 We will fill it in later if we find out how. */
330 *type_addr
= alloc_type (objfile
);
336 /* for all the stabs in a given stab vector, build appropriate types
337 and fix their symbols in given symbol vector. */
340 patch_block_stabs (symbols
, stabs
, objfile
)
341 struct pending
*symbols
;
342 struct pending_stabs
*stabs
;
343 struct objfile
*objfile
;
353 /* for all the stab entries, find their corresponding symbols and
354 patch their types! */
356 for (ii
= 0; ii
< stabs
->count
; ++ii
)
358 name
= stabs
->stab
[ii
];
359 pp
= (char*) strchr (name
, ':');
363 pp
= (char *)strchr(pp
, ':');
365 sym
= find_symbol_in_list (symbols
, name
, pp
-name
);
368 /* On xcoff, if a global is defined and never referenced,
369 ld will remove it from the executable. There is then
370 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
371 sym
= (struct symbol
*)
372 obstack_alloc (&objfile
->symbol_obstack
,
373 sizeof (struct symbol
));
375 memset (sym
, 0, sizeof (struct symbol
));
376 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
377 SYMBOL_CLASS (sym
) = LOC_OPTIMIZED_OUT
;
379 obstack_copy0 (&objfile
->symbol_obstack
, name
, pp
- name
);
381 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
383 /* I don't think the linker does this with functions,
384 so as far as I know this is never executed.
385 But it doesn't hurt to check. */
387 lookup_function_type (read_type (&pp
, objfile
));
391 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
393 add_symbol_to_list (sym
, &global_symbols
);
398 if (*(pp
-1) == 'F' || *(pp
-1) == 'f')
401 lookup_function_type (read_type (&pp
, objfile
));
405 SYMBOL_TYPE (sym
) = read_type (&pp
, objfile
);
413 /* Read a number by which a type is referred to in dbx data,
414 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
415 Just a single number N is equivalent to (0,N).
416 Return the two numbers by storing them in the vector TYPENUMS.
417 TYPENUMS will then be used as an argument to dbx_lookup_type.
419 Returns 0 for success, -1 for error. */
422 read_type_number (pp
, typenums
)
424 register int *typenums
;
430 typenums
[0] = read_huge_number (pp
, ',', &nbits
);
431 if (nbits
!= 0) return -1;
432 typenums
[1] = read_huge_number (pp
, ')', &nbits
);
433 if (nbits
!= 0) return -1;
438 typenums
[1] = read_huge_number (pp
, 0, &nbits
);
439 if (nbits
!= 0) return -1;
445 /* To handle GNU C++ typename abbreviation, we need to be able to
446 fill in a type's name as soon as space for that type is allocated.
447 `type_synonym_name' is the name of the type being allocated.
448 It is cleared as soon as it is used (lest all allocated types
451 static char *type_synonym_name
;
453 #if !defined (REG_STRUCT_HAS_ADDR)
454 #define REG_STRUCT_HAS_ADDR(gcc_p) 0
459 define_symbol (valu
, string
, desc
, type
, objfile
)
464 struct objfile
*objfile
;
466 register struct symbol
*sym
;
467 char *p
= (char *) strchr (string
, ':');
472 /* We would like to eliminate nameless symbols, but keep their types.
473 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
474 to type 2, but, should not create a symbol to address that type. Since
475 the symbol will be nameless, there is no way any user can refer to it. */
479 /* Ignore syms with empty names. */
483 /* Ignore old-style symbols from cc -go */
493 /* If a nameless stab entry, all we need is the type, not the symbol.
494 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
495 nameless
= (p
== string
|| ((string
[0] == ' ') && (string
[1] == ':')));
497 sym
= (struct symbol
*)
498 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
499 memset (sym
, 0, sizeof (struct symbol
));
501 if (processing_gcc_compilation
)
503 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
504 number of bytes occupied by a type or object, which we ignore. */
505 SYMBOL_LINE(sym
) = desc
;
509 SYMBOL_LINE(sym
) = 0; /* unknown */
512 if (string
[0] == CPLUS_MARKER
)
514 /* Special GNU C++ names. */
518 SYMBOL_NAME (sym
) = obsavestring ("this", strlen ("this"),
519 &objfile
-> symbol_obstack
);
522 case 'v': /* $vtbl_ptr_type */
523 /* Was: SYMBOL_NAME (sym) = "vptr"; */
527 SYMBOL_NAME (sym
) = obsavestring ("eh_throw", strlen ("eh_throw"),
528 &objfile
-> symbol_obstack
);
532 /* This was an anonymous type that was never fixed up. */
536 complain (&unrecognized_cplus_name_complaint
, string
);
537 goto normal
; /* Do *something* with it */
543 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
544 SYMBOL_NAME (sym
) = (char *)
545 obstack_alloc (&objfile
-> symbol_obstack
, ((p
- string
) + 1));
546 /* Open-coded memcpy--saves function call time. */
547 /* FIXME: Does it really? Try replacing with simple strcpy and
548 try it on an executable with a large symbol table. */
549 /* FIXME: considering that gcc can open code memcpy anyway, I
550 doubt it. xoxorich. */
552 register char *p1
= string
;
553 register char *p2
= SYMBOL_NAME (sym
);
561 /* If this symbol is from a C++ compilation, then attempt to cache the
562 demangled form for future reference. This is a typical time versus
563 space tradeoff, that was decided in favor of time because it sped up
564 C++ symbol lookups by a factor of about 20. */
566 SYMBOL_INIT_DEMANGLED_NAME (sym
, &objfile
->symbol_obstack
);
570 /* Determine the type of name being defined. */
572 /* Getting GDB to correctly skip the symbol on an undefined symbol
573 descriptor and not ever dump core is a very dodgy proposition if
574 we do things this way. I say the acorn RISC machine can just
575 fix their compiler. */
576 /* The Acorn RISC machine's compiler can put out locals that don't
577 start with "234=" or "(3,4)=", so assume anything other than the
578 deftypes we know how to handle is a local. */
579 if (!strchr ("cfFGpPrStTvVXCR", *p
))
581 if (isdigit (*p
) || *p
== '(' || *p
== '-')
590 /* c is a special case, not followed by a type-number.
591 SYMBOL:c=iVALUE for an integer constant symbol.
592 SYMBOL:c=rVALUE for a floating constant symbol.
593 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
594 e.g. "b:c=e6,0" for "const b = blob1"
595 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
598 SYMBOL_CLASS (sym
) = LOC_CONST
;
599 SYMBOL_TYPE (sym
) = error_type (&p
);
600 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
601 add_symbol_to_list (sym
, &file_symbols
);
612 /* FIXME-if-picky-about-floating-accuracy: Should be using
613 target arithmetic to get the value. real.c in GCC
614 probably has the necessary code. */
616 /* FIXME: lookup_fundamental_type is a hack. We should be
617 creating a type especially for the type of float constants.
618 Problem is, what type should it be?
620 Also, what should the name of this type be? Should we
621 be using 'S' constants (see stabs.texinfo) instead? */
623 SYMBOL_TYPE (sym
) = lookup_fundamental_type (objfile
,
626 obstack_alloc (&objfile
-> symbol_obstack
,
627 TYPE_LENGTH (SYMBOL_TYPE (sym
)));
628 store_floating (dbl_valu
, TYPE_LENGTH (SYMBOL_TYPE (sym
)), d
);
629 SYMBOL_VALUE_BYTES (sym
) = dbl_valu
;
630 SYMBOL_CLASS (sym
) = LOC_CONST_BYTES
;
635 /* Defining integer constants this way is kind of silly,
636 since 'e' constants allows the compiler to give not
637 only the value, but the type as well. C has at least
638 int, long, unsigned int, and long long as constant
639 types; other languages probably should have at least
640 unsigned as well as signed constants. */
642 /* We just need one int constant type for all objfiles.
643 It doesn't depend on languages or anything (arguably its
644 name should be a language-specific name for a type of
645 that size, but I'm inclined to say that if the compiler
646 wants a nice name for the type, it can use 'e'). */
647 static struct type
*int_const_type
;
649 /* Yes, this is as long as a *host* int. That is because we
651 if (int_const_type
== NULL
)
653 init_type (TYPE_CODE_INT
,
654 sizeof (int) * HOST_CHAR_BIT
/ TARGET_CHAR_BIT
, 0,
656 (struct objfile
*)NULL
);
657 SYMBOL_TYPE (sym
) = int_const_type
;
658 SYMBOL_VALUE (sym
) = atoi (p
);
659 SYMBOL_CLASS (sym
) = LOC_CONST
;
663 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
664 can be represented as integral.
665 e.g. "b:c=e6,0" for "const b = blob1"
666 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
668 SYMBOL_CLASS (sym
) = LOC_CONST
;
669 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
673 SYMBOL_TYPE (sym
) = error_type (&p
);
678 /* If the value is too big to fit in an int (perhaps because
679 it is unsigned), or something like that, we silently get
680 a bogus value. The type and everything else about it is
681 correct. Ideally, we should be using whatever we have
682 available for parsing unsigned and long long values,
684 SYMBOL_VALUE (sym
) = atoi (p
);
689 SYMBOL_CLASS (sym
) = LOC_CONST
;
690 SYMBOL_TYPE (sym
) = error_type (&p
);
693 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
694 add_symbol_to_list (sym
, &file_symbols
);
698 /* The name of a caught exception. */
699 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
700 SYMBOL_CLASS (sym
) = LOC_LABEL
;
701 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
702 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
703 add_symbol_to_list (sym
, &local_symbols
);
707 /* A static function definition. */
708 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
709 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
710 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
711 add_symbol_to_list (sym
, &file_symbols
);
712 /* fall into process_function_types. */
714 process_function_types
:
715 /* Function result types are described as the result type in stabs.
716 We need to convert this to the function-returning-type-X type
717 in GDB. E.g. "int" is converted to "function returning int". */
718 if (TYPE_CODE (SYMBOL_TYPE (sym
)) != TYPE_CODE_FUNC
)
721 /* This code doesn't work -- it needs to realloc and can't. */
722 /* Attempt to set up to record a function prototype... */
723 struct type
*new = alloc_type (objfile
);
725 /* Generate a template for the type of this function. The
726 types of the arguments will be added as we read the symbol
728 *new = *lookup_function_type (SYMBOL_TYPE(sym
));
729 SYMBOL_TYPE(sym
) = new;
730 TYPE_OBJFILE (new) = objfile
;
731 in_function_type
= new;
733 SYMBOL_TYPE (sym
) = lookup_function_type (SYMBOL_TYPE (sym
));
736 /* fall into process_prototype_types */
738 process_prototype_types
:
739 /* Sun acc puts declared types of arguments here. We don't care
740 about their actual types (FIXME -- we should remember the whole
741 function prototype), but the list may define some new types
742 that we have to remember, so we must scan it now. */
745 read_type (&p
, objfile
);
750 /* A global function definition. */
751 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
752 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
753 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
754 add_symbol_to_list (sym
, &global_symbols
);
755 goto process_function_types
;
758 /* For a class G (global) symbol, it appears that the
759 value is not correct. It is necessary to search for the
760 corresponding linker definition to find the value.
761 These definitions appear at the end of the namelist. */
762 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
763 i
= hashname (SYMBOL_NAME (sym
));
764 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
765 global_sym_chain
[i
] = sym
;
766 SYMBOL_CLASS (sym
) = LOC_STATIC
;
767 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
768 add_symbol_to_list (sym
, &global_symbols
);
771 /* This case is faked by a conditional above,
772 when there is no code letter in the dbx data.
773 Dbx data never actually contains 'l'. */
775 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
776 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
777 SYMBOL_VALUE (sym
) = valu
;
778 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
779 add_symbol_to_list (sym
, &local_symbols
);
784 /* pF is a two-letter code that means a function parameter in Fortran.
785 The type-number specifies the type of the return value.
786 Translate it into a pointer-to-function type. */
790 = lookup_pointer_type
791 (lookup_function_type (read_type (&p
, objfile
)));
794 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
796 /* Normally this is a parameter, a LOC_ARG. On the i960, it
797 can also be a LOC_LOCAL_ARG depending on symbol type. */
798 #ifndef DBX_PARM_SYMBOL_CLASS
799 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
802 SYMBOL_CLASS (sym
) = DBX_PARM_SYMBOL_CLASS (type
);
803 SYMBOL_VALUE (sym
) = valu
;
804 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
806 /* This doesn't work yet. */
807 add_param_to_type (&in_function_type
, sym
);
809 add_symbol_to_list (sym
, &local_symbols
);
811 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
812 /* On little-endian machines, this crud is never necessary, and,
813 if the extra bytes contain garbage, is harmful. */
815 #else /* Big endian. */
816 /* If it's gcc-compiled, if it says `short', believe it. */
817 if (processing_gcc_compilation
|| BELIEVE_PCC_PROMOTION
)
820 #if !BELIEVE_PCC_PROMOTION
822 /* This is the signed type which arguments get promoted to. */
823 static struct type
*pcc_promotion_type
;
824 /* This is the unsigned type which arguments get promoted to. */
825 static struct type
*pcc_unsigned_promotion_type
;
827 /* Call it "int" because this is mainly C lossage. */
828 if (pcc_promotion_type
== NULL
)
830 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
833 if (pcc_unsigned_promotion_type
== NULL
)
834 pcc_unsigned_promotion_type
=
835 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
836 TYPE_FLAG_UNSIGNED
, "unsigned int", NULL
);
838 #if defined(BELIEVE_PCC_PROMOTION_TYPE)
839 /* This macro is defined on machines (e.g. sparc) where
840 we should believe the type of a PCC 'short' argument,
841 but shouldn't believe the address (the address is
842 the address of the corresponding int).
844 My guess is that this correction, as opposed to changing
845 the parameter to an 'int' (as done below, for PCC
846 on most machines), is the right thing to do
847 on all machines, but I don't want to risk breaking
848 something that already works. On most PCC machines,
849 the sparc problem doesn't come up because the calling
850 function has to zero the top bytes (not knowing whether
851 the called function wants an int or a short), so there
852 is little practical difference between an int and a short
853 (except perhaps what happens when the GDB user types
854 "print short_arg = 0x10000;").
856 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
857 actually produces the correct address (we don't need to fix it
858 up). I made this code adapt so that it will offset the symbol
859 if it was pointing at an int-aligned location and not
860 otherwise. This way you can use the same gdb for 4.0.x and
863 If the parameter is shorter than an int, and is integral
864 (e.g. char, short, or unsigned equivalent), and is claimed to
865 be passed on an integer boundary, don't believe it! Offset the
866 parameter's address to the tail-end of that integer. */
868 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
869 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
870 && 0 == SYMBOL_VALUE (sym
) % TYPE_LENGTH (pcc_promotion_type
))
872 SYMBOL_VALUE (sym
) += TYPE_LENGTH (pcc_promotion_type
)
873 - TYPE_LENGTH (SYMBOL_TYPE (sym
));
877 #else /* no BELIEVE_PCC_PROMOTION_TYPE. */
879 /* If PCC says a parameter is a short or a char,
880 it is really an int. */
881 if (TYPE_LENGTH (SYMBOL_TYPE (sym
)) < TYPE_LENGTH (pcc_promotion_type
)
882 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_INT
)
885 TYPE_UNSIGNED (SYMBOL_TYPE (sym
))
886 ? pcc_unsigned_promotion_type
887 : pcc_promotion_type
;
891 #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
893 #endif /* !BELIEVE_PCC_PROMOTION. */
894 #endif /* Big endian. */
897 /* acc seems to use P to delare the prototypes of functions that
898 are referenced by this file. gdb is not prepared to deal
899 with this extra information. FIXME, it ought to. */
902 read_type (&p
, objfile
);
903 goto process_prototype_types
;
908 /* Parameter which is in a register. */
909 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
910 SYMBOL_CLASS (sym
) = LOC_REGPARM
;
911 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
912 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
914 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
915 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
917 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
918 add_symbol_to_list (sym
, &local_symbols
);
922 /* Register variable (either global or local). */
923 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
924 SYMBOL_CLASS (sym
) = LOC_REGISTER
;
925 SYMBOL_VALUE (sym
) = STAB_REG_TO_REGNUM (valu
);
926 if (SYMBOL_VALUE (sym
) >= NUM_REGS
)
928 complain (®_value_complaint
, SYMBOL_SOURCE_NAME (sym
));
929 SYMBOL_VALUE (sym
) = SP_REGNUM
; /* Known safe, though useless */
931 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
934 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
935 name to represent an argument passed in a register.
936 GCC uses 'P' for the same case. So if we find such a symbol pair
937 we combine it into one 'P' symbol.
939 But we only do this in the REG_STRUCT_HAS_ADDR case, so that
940 we can still get information about what is going on with the
941 stack (VAX for computing args_printed, using stack slots instead
942 of saved registers in backtraces, etc.).
944 Note that this code illegally combines
945 main(argc) struct foo argc; { register struct foo argc; }
946 but this case is considered pathological and causes a warning
947 from a decent compiler. */
950 && local_symbols
->nsyms
> 0
951 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
952 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
953 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
))
955 struct symbol
*prev_sym
;
956 prev_sym
= local_symbols
->symbol
[local_symbols
->nsyms
- 1];
957 if (SYMBOL_CLASS (prev_sym
) == LOC_ARG
958 && STREQ (SYMBOL_NAME (prev_sym
), SYMBOL_NAME(sym
)))
960 SYMBOL_CLASS (prev_sym
) = LOC_REGPARM
;
961 /* Use the type from the LOC_REGISTER; that is the type
962 that is actually in that register. */
963 SYMBOL_TYPE (prev_sym
) = SYMBOL_TYPE (sym
);
964 SYMBOL_VALUE (prev_sym
) = SYMBOL_VALUE (sym
);
969 add_symbol_to_list (sym
, &local_symbols
);
972 add_symbol_to_list (sym
, &file_symbols
);
976 /* Static symbol at top level of file */
977 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
978 SYMBOL_CLASS (sym
) = LOC_STATIC
;
979 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
980 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
981 add_symbol_to_list (sym
, &file_symbols
);
985 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
987 /* For a nameless type, we don't want a create a symbol, thus we
988 did not use `sym'. Return without further processing. */
989 if (nameless
) return NULL
;
991 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
992 SYMBOL_VALUE (sym
) = valu
;
993 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
994 /* C++ vagaries: we may have a type which is derived from
995 a base type which did not have its name defined when the
996 derived class was output. We fill in the derived class's
997 base part member's name here in that case. */
998 if (TYPE_NAME (SYMBOL_TYPE (sym
)) != NULL
)
999 if ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
1000 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)
1001 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)))
1004 for (j
= TYPE_N_BASECLASSES (SYMBOL_TYPE (sym
)) - 1; j
>= 0; j
--)
1005 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) == 0)
1006 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym
), j
) =
1007 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym
), j
));
1010 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == NULL
)
1012 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_PTR
1013 || TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FUNC
)
1015 /* If we are giving a name to a type such as "pointer to
1016 foo" or "function returning foo", we better not set
1017 the TYPE_NAME. If the program contains "typedef char
1018 *caddr_t;", we don't want all variables of type char
1019 * to print as caddr_t. This is not just a
1020 consequence of GDB's type management; PCC and GCC (at
1021 least through version 2.4) both output variables of
1022 either type char * or caddr_t with the type number
1023 defined in the 't' symbol for caddr_t. If a future
1024 compiler cleans this up it GDB is not ready for it
1025 yet, but if it becomes ready we somehow need to
1026 disable this check (without breaking the PCC/GCC2.4
1031 Fortunately, this check seems not to be necessary
1032 for anything except pointers or functions. */
1035 TYPE_NAME (SYMBOL_TYPE (sym
)) = SYMBOL_NAME (sym
);
1038 add_symbol_to_list (sym
, &file_symbols
);
1042 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1043 by 't' which means we are typedef'ing it as well. */
1044 synonym
= *p
== 't';
1049 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1050 strlen (SYMBOL_NAME (sym
)),
1051 &objfile
-> symbol_obstack
);
1053 /* The semantics of C++ state that "struct foo { ... }" also defines
1054 a typedef for "foo". Unfortunately, cfront never makes the typedef
1055 when translating C++ into C. We make the typedef here so that
1056 "ptype foo" works as expected for cfront translated code. */
1057 else if (current_subfile
->language
== language_cplus
)
1060 type_synonym_name
= obsavestring (SYMBOL_NAME (sym
),
1061 strlen (SYMBOL_NAME (sym
)),
1062 &objfile
-> symbol_obstack
);
1065 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1067 /* For a nameless type, we don't want a create a symbol, thus we
1068 did not use `sym'. Return without further processing. */
1069 if (nameless
) return NULL
;
1071 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
1072 SYMBOL_VALUE (sym
) = valu
;
1073 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
1074 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym
)) == 0)
1075 TYPE_TAG_NAME (SYMBOL_TYPE (sym
))
1076 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1077 add_symbol_to_list (sym
, &file_symbols
);
1081 /* Clone the sym and then modify it. */
1082 register struct symbol
*typedef_sym
= (struct symbol
*)
1083 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
1084 *typedef_sym
= *sym
;
1085 SYMBOL_CLASS (typedef_sym
) = LOC_TYPEDEF
;
1086 SYMBOL_VALUE (typedef_sym
) = valu
;
1087 SYMBOL_NAMESPACE (typedef_sym
) = VAR_NAMESPACE
;
1088 if (TYPE_NAME (SYMBOL_TYPE (sym
)) == 0)
1089 TYPE_NAME (SYMBOL_TYPE (sym
))
1090 = obconcat (&objfile
-> type_obstack
, "", "", SYMBOL_NAME (sym
));
1091 add_symbol_to_list (typedef_sym
, &file_symbols
);
1096 /* Static symbol of local scope */
1097 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1098 SYMBOL_CLASS (sym
) = LOC_STATIC
;
1099 SYMBOL_VALUE_ADDRESS (sym
) = valu
;
1100 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1101 add_symbol_to_list (sym
, &local_symbols
);
1105 /* Reference parameter */
1106 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1107 SYMBOL_CLASS (sym
) = LOC_REF_ARG
;
1108 SYMBOL_VALUE (sym
) = valu
;
1109 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1110 add_symbol_to_list (sym
, &local_symbols
);
1114 /* This is used by Sun FORTRAN for "function result value".
1115 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1116 that Pascal uses it too, but when I tried it Pascal used
1117 "x:3" (local symbol) instead. */
1118 SYMBOL_TYPE (sym
) = read_type (&p
, objfile
);
1119 SYMBOL_CLASS (sym
) = LOC_LOCAL
;
1120 SYMBOL_VALUE (sym
) = valu
;
1121 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1122 add_symbol_to_list (sym
, &local_symbols
);
1126 SYMBOL_TYPE (sym
) = error_type (&p
);
1127 SYMBOL_CLASS (sym
) = LOC_CONST
;
1128 SYMBOL_VALUE (sym
) = 0;
1129 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
1130 add_symbol_to_list (sym
, &file_symbols
);
1134 /* When passing structures to a function, some systems sometimes pass
1135 the address in a register, not the structure itself.
1137 If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM
1138 to LOC_REGPARM_ADDR for structures and unions. */
1140 if (SYMBOL_CLASS (sym
) == LOC_REGPARM
1141 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation
)
1142 && ((TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1143 || (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_UNION
)))
1144 SYMBOL_CLASS (sym
) = LOC_REGPARM_ADDR
;
1150 /* Skip rest of this symbol and return an error type.
1152 General notes on error recovery: error_type always skips to the
1153 end of the symbol (modulo cretinous dbx symbol name continuation).
1154 Thus code like this:
1156 if (*(*pp)++ != ';')
1157 return error_type (pp);
1159 is wrong because if *pp starts out pointing at '\0' (typically as the
1160 result of an earlier error), it will be incremented to point to the
1161 start of the next symbol, which might produce strange results, at least
1162 if you run off the end of the string table. Instead use
1165 return error_type (pp);
1171 foo = error_type (pp);
1175 And in case it isn't obvious, the point of all this hair is so the compiler
1176 can define new types and new syntaxes, and old versions of the
1177 debugger will be able to read the new symbol tables. */
1179 static struct type
*
1183 complain (&error_type_complaint
);
1186 /* Skip to end of symbol. */
1187 while (**pp
!= '\0')
1192 /* Check for and handle cretinous dbx symbol name continuation! */
1193 if ((*pp
)[-1] == '\\')
1195 *pp
= next_symbol_text ();
1202 return (builtin_type_error
);
1206 /* Read type information or a type definition; return the type. Even
1207 though this routine accepts either type information or a type
1208 definition, the distinction is relevant--some parts of stabsread.c
1209 assume that type information starts with a digit, '-', or '(' in
1210 deciding whether to call read_type. */
1213 read_type (pp
, objfile
)
1215 struct objfile
*objfile
;
1217 register struct type
*type
= 0;
1221 char type_descriptor
;
1223 /* Size in bits of type if specified by a type attribute, or -1 if
1224 there is no size attribute. */
1227 /* Used to distinguish string and bitstring from char-array and set. */
1230 /* Read type number if present. The type number may be omitted.
1231 for instance in a two-dimensional array declared with type
1232 "ar1;1;10;ar1;1;10;4". */
1233 if ((**pp
>= '0' && **pp
<= '9')
1237 if (read_type_number (pp
, typenums
) != 0)
1238 return error_type (pp
);
1240 /* Type is not being defined here. Either it already exists,
1241 or this is a forward reference to it. dbx_alloc_type handles
1244 return dbx_alloc_type (typenums
, objfile
);
1246 /* Type is being defined here. */
1253 /* It might be a type attribute or a member type. */
1254 if (isdigit (*p
) || *p
== '(' || *p
== '-')
1259 /* Type attributes. */
1262 /* Skip to the semicolon. */
1263 while (*p
!= ';' && *p
!= '\0')
1267 return error_type (pp
);
1269 /* Skip the semicolon. */
1275 type_size
= atoi (attr
+ 1);
1285 /* Ignore unrecognized type attributes, so future compilers
1286 can invent new ones. */
1291 /* Skip the type descriptor, we get it below with (*pp)[-1]. */
1296 /* 'typenums=' not present, type is anonymous. Read and return
1297 the definition, but don't put it in the type vector. */
1298 typenums
[0] = typenums
[1] = -1;
1302 type_descriptor
= (*pp
)[-1];
1303 switch (type_descriptor
)
1307 enum type_code code
;
1309 /* Used to index through file_symbols. */
1310 struct pending
*ppt
;
1313 /* Name including "struct", etc. */
1317 char *from
, *to
, *p
, *q1
, *q2
;
1319 /* Set the type code according to the following letter. */
1323 code
= TYPE_CODE_STRUCT
;
1326 code
= TYPE_CODE_UNION
;
1329 code
= TYPE_CODE_ENUM
;
1333 /* Complain and keep going, so compilers can invent new
1334 cross-reference types. */
1335 static struct complaint msg
=
1336 {"Unrecognized cross-reference type `%c'", 0, 0};
1337 complain (&msg
, (*pp
)[0]);
1338 code
= TYPE_CODE_STRUCT
;
1343 q1
= strchr(*pp
, '<');
1344 p
= strchr(*pp
, ':');
1346 return error_type (pp
);
1347 while (q1
&& p
> q1
&& p
[1] == ':')
1349 q2
= strchr(q1
, '>');
1355 return error_type (pp
);
1358 (char *)obstack_alloc (&objfile
->type_obstack
, p
- *pp
+ 1);
1360 /* Copy the name. */
1366 /* Set the pointer ahead of the name which we just read, and
1371 /* Now check to see whether the type has already been
1372 declared. This was written for arrays of cross-referenced
1373 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
1374 sure it is not necessary anymore. But it might be a good
1375 idea, to save a little memory. */
1377 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
1378 for (i
= 0; i
< ppt
->nsyms
; i
++)
1380 struct symbol
*sym
= ppt
->symbol
[i
];
1382 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
1383 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
1384 && (TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
1385 && STREQ (SYMBOL_NAME (sym
), type_name
))
1387 obstack_free (&objfile
-> type_obstack
, type_name
);
1388 type
= SYMBOL_TYPE (sym
);
1393 /* Didn't find the type to which this refers, so we must
1394 be dealing with a forward reference. Allocate a type
1395 structure for it, and keep track of it so we can
1396 fill in the rest of the fields when we get the full
1398 type
= dbx_alloc_type (typenums
, objfile
);
1399 TYPE_CODE (type
) = code
;
1400 TYPE_TAG_NAME (type
) = type_name
;
1401 INIT_CPLUS_SPECIFIC(type
);
1402 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
1404 add_undefined_type (type
);
1408 case '-': /* RS/6000 built-in type */
1427 /* Peek ahead at the number to detect void. */
1428 if (read_type_number (pp
, xtypenums
) != 0)
1429 return error_type (pp
);
1431 if (typenums
[0] == xtypenums
[0] && typenums
[1] == xtypenums
[1])
1432 /* It's being defined as itself. That means it is "void". */
1433 type
= init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
1438 /* Go back to the number and have read_type get it. This means
1439 that we can deal with something like t(1,2)=(3,4)=... which
1440 the Lucid compiler uses. */
1442 xtype
= read_type (pp
, objfile
);
1444 /* The type is being defined to another type. So we copy the type.
1445 This loses if we copy a C++ class and so we lose track of how
1446 the names are mangled (but g++ doesn't output stabs like this
1449 type
= alloc_type (objfile
);
1450 memcpy (type
, xtype
, sizeof (struct type
));
1452 /* The idea behind clearing the names is that the only purpose
1453 for defining a type to another type is so that the name of
1454 one can be different. So we probably don't need to worry much
1455 about the case where the compiler doesn't give a name to the
1457 TYPE_NAME (type
) = NULL
;
1458 TYPE_TAG_NAME (type
) = NULL
;
1460 if (typenums
[0] != -1)
1461 *dbx_lookup_type (typenums
) = type
;
1465 /* In the following types, we must be sure to overwrite any existing
1466 type that the typenums refer to, rather than allocating a new one
1467 and making the typenums point to the new one. This is because there
1468 may already be pointers to the existing type (if it had been
1469 forward-referenced), and we must change it to a pointer, function,
1470 reference, or whatever, *in-place*. */
1473 type1
= read_type (pp
, objfile
);
1474 type
= make_pointer_type (type1
, dbx_lookup_type (typenums
));
1477 case '&': /* Reference to another type */
1478 type1
= read_type (pp
, objfile
);
1479 type
= make_reference_type (type1
, dbx_lookup_type (typenums
));
1482 case 'f': /* Function returning another type */
1483 type1
= read_type (pp
, objfile
);
1484 type
= make_function_type (type1
, dbx_lookup_type (typenums
));
1487 case 'k': /* Const qualifier on some type (Sun) */
1488 type
= read_type (pp
, objfile
);
1489 /* FIXME! For now, we ignore const and volatile qualifiers. */
1492 case 'B': /* Volatile qual on some type (Sun) */
1493 type
= read_type (pp
, objfile
);
1494 /* FIXME! For now, we ignore const and volatile qualifiers. */
1497 /* FIXME -- we should be doing smash_to_XXX types here. */
1498 case '@': /* Member (class & variable) type */
1500 struct type
*domain
= read_type (pp
, objfile
);
1501 struct type
*memtype
;
1504 /* Invalid member type data format. */
1505 return error_type (pp
);
1508 memtype
= read_type (pp
, objfile
);
1509 type
= dbx_alloc_type (typenums
, objfile
);
1510 smash_to_member_type (type
, domain
, memtype
);
1514 case '#': /* Method (class & fn) type */
1515 if ((*pp
)[0] == '#')
1517 /* We'll get the parameter types from the name. */
1518 struct type
*return_type
;
1521 return_type
= read_type (pp
, objfile
);
1522 if (*(*pp
)++ != ';')
1523 complain (&invalid_member_complaint
, symnum
);
1524 type
= allocate_stub_method (return_type
);
1525 if (typenums
[0] != -1)
1526 *dbx_lookup_type (typenums
) = type
;
1530 struct type
*domain
= read_type (pp
, objfile
);
1531 struct type
*return_type
;
1535 /* Invalid member type data format. */
1536 return error_type (pp
);
1540 return_type
= read_type (pp
, objfile
);
1541 args
= read_args (pp
, ';', objfile
);
1542 type
= dbx_alloc_type (typenums
, objfile
);
1543 smash_to_method_type (type
, domain
, return_type
, args
);
1547 case 'r': /* Range type */
1548 type
= read_range_type (pp
, typenums
, objfile
);
1549 if (typenums
[0] != -1)
1550 *dbx_lookup_type (typenums
) = type
;
1553 case 'b': /* Sun ACC builtin int type */
1554 type
= read_sun_builtin_type (pp
, typenums
, objfile
);
1555 if (typenums
[0] != -1)
1556 *dbx_lookup_type (typenums
) = type
;
1559 case 'R': /* Sun ACC builtin float type */
1560 type
= read_sun_floating_type (pp
, typenums
, objfile
);
1561 if (typenums
[0] != -1)
1562 *dbx_lookup_type (typenums
) = type
;
1565 case 'e': /* Enumeration type */
1566 type
= dbx_alloc_type (typenums
, objfile
);
1567 type
= read_enum_type (pp
, type
, objfile
);
1568 if (typenums
[0] != -1)
1569 *dbx_lookup_type (typenums
) = type
;
1572 case 's': /* Struct type */
1573 case 'u': /* Union type */
1574 type
= dbx_alloc_type (typenums
, objfile
);
1575 if (!TYPE_NAME (type
))
1577 TYPE_NAME (type
) = type_synonym_name
;
1579 type_synonym_name
= NULL
;
1580 switch (type_descriptor
)
1583 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
1586 TYPE_CODE (type
) = TYPE_CODE_UNION
;
1589 type
= read_struct_type (pp
, type
, objfile
);
1592 case 'a': /* Array type */
1594 return error_type (pp
);
1597 type
= dbx_alloc_type (typenums
, objfile
);
1598 type
= read_array_type (pp
, type
, objfile
);
1600 TYPE_CODE (type
) = TYPE_CODE_STRING
;
1604 type1
= read_type (pp
, objfile
);
1605 type
= create_set_type ((struct type
*) NULL
, type1
);
1607 TYPE_CODE (type
) = TYPE_CODE_BITSTRING
;
1608 if (typenums
[0] != -1)
1609 *dbx_lookup_type (typenums
) = type
;
1613 --*pp
; /* Go back to the symbol in error */
1614 /* Particularly important if it was \0! */
1615 return error_type (pp
);
1620 warning ("GDB internal error, type is NULL in stabsread.c\n");
1621 return error_type (pp
);
1624 /* Size specified in a type attribute overrides any other size. */
1625 if (type_size
!= -1)
1626 TYPE_LENGTH (type
) = type_size
/ TARGET_CHAR_BIT
;
1631 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1632 Return the proper type node for a given builtin type number. */
1634 static struct type
*
1635 rs6000_builtin_type (typenum
)
1638 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1639 #define NUMBER_RECOGNIZED 30
1640 /* This includes an empty slot for type number -0. */
1641 static struct type
*negative_types
[NUMBER_RECOGNIZED
+ 1];
1642 struct type
*rettype
= NULL
;
1644 if (typenum
>= 0 || typenum
< -NUMBER_RECOGNIZED
)
1646 complain (&rs6000_builtin_complaint
, typenum
);
1647 return builtin_type_error
;
1649 if (negative_types
[-typenum
] != NULL
)
1650 return negative_types
[-typenum
];
1652 #if TARGET_CHAR_BIT != 8
1653 #error This code wrong for TARGET_CHAR_BIT not 8
1654 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1655 that if that ever becomes not true, the correct fix will be to
1656 make the size in the struct type to be in bits, not in units of
1663 /* The size of this and all the other types are fixed, defined
1664 by the debugging format. If there is a type called "int" which
1665 is other than 32 bits, then it should use a new negative type
1666 number (or avoid negative type numbers for that case).
1667 See stabs.texinfo. */
1668 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1671 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "char", NULL
);
1674 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1677 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "long", NULL
);
1680 rettype
= init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
,
1681 "unsigned char", NULL
);
1684 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "signed char", NULL
);
1687 rettype
= init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
,
1688 "unsigned short", NULL
);
1691 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1692 "unsigned int", NULL
);
1695 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1698 rettype
= init_type (TYPE_CODE_INT
, 4, TYPE_FLAG_UNSIGNED
,
1699 "unsigned long", NULL
);
1702 rettype
= init_type (TYPE_CODE_VOID
, 0, 0, "void", NULL
);
1705 /* IEEE single precision (32 bit). */
1706 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1709 /* IEEE double precision (64 bit). */
1710 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1713 /* This is an IEEE double on the RS/6000, and different machines with
1714 different sizes for "long double" should use different negative
1715 type numbers. See stabs.texinfo. */
1716 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "long double", NULL
);
1719 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer", NULL
);
1722 rettype
= init_type (TYPE_CODE_BOOL
, 4, 0, "boolean", NULL
);
1725 rettype
= init_type (TYPE_CODE_FLT
, 4, 0, "short real", NULL
);
1728 rettype
= init_type (TYPE_CODE_FLT
, 8, 0, "real", NULL
);
1731 rettype
= init_type (TYPE_CODE_ERROR
, 0, 0, "stringptr", NULL
);
1734 rettype
= init_type (TYPE_CODE_CHAR
, 1, TYPE_FLAG_UNSIGNED
,
1738 rettype
= init_type (TYPE_CODE_BOOL
, 1, TYPE_FLAG_UNSIGNED
,
1742 rettype
= init_type (TYPE_CODE_BOOL
, 2, TYPE_FLAG_UNSIGNED
,
1746 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1750 rettype
= init_type (TYPE_CODE_BOOL
, 4, TYPE_FLAG_UNSIGNED
,
1754 /* Complex type consisting of two IEEE single precision values. */
1755 rettype
= init_type (TYPE_CODE_ERROR
, 8, 0, "complex", NULL
);
1758 /* Complex type consisting of two IEEE double precision values. */
1759 rettype
= init_type (TYPE_CODE_ERROR
, 16, 0, "double complex", NULL
);
1762 rettype
= init_type (TYPE_CODE_INT
, 1, 0, "integer*1", NULL
);
1765 rettype
= init_type (TYPE_CODE_INT
, 2, 0, "integer*2", NULL
);
1768 rettype
= init_type (TYPE_CODE_INT
, 4, 0, "integer*4", NULL
);
1771 rettype
= init_type (TYPE_CODE_CHAR
, 2, 0, "wchar", NULL
);
1774 negative_types
[-typenum
] = rettype
;
1778 /* This page contains subroutines of read_type. */
1780 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
1781 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
1782 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
1783 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
1785 /* Read member function stabs info for C++ classes. The form of each member
1788 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
1790 An example with two member functions is:
1792 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
1794 For the case of overloaded operators, the format is op$::*.funcs, where
1795 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
1796 name (such as `+=') and `.' marks the end of the operator name.
1798 Returns 1 for success, 0 for failure. */
1801 read_member_functions (fip
, pp
, type
, objfile
)
1802 struct field_info
*fip
;
1805 struct objfile
*objfile
;
1809 /* Total number of member functions defined in this class. If the class
1810 defines two `f' functions, and one `g' function, then this will have
1812 int total_length
= 0;
1816 struct next_fnfield
*next
;
1817 struct fn_field fn_field
;
1819 struct type
*look_ahead_type
;
1820 struct next_fnfieldlist
*new_fnlist
;
1821 struct next_fnfield
*new_sublist
;
1825 /* Process each list until we find something that is not a member function
1826 or find the end of the functions. */
1830 /* We should be positioned at the start of the function name.
1831 Scan forward to find the first ':' and if it is not the
1832 first of a "::" delimiter, then this is not a member function. */
1844 look_ahead_type
= NULL
;
1847 new_fnlist
= (struct next_fnfieldlist
*)
1848 xmalloc (sizeof (struct next_fnfieldlist
));
1849 make_cleanup (free
, new_fnlist
);
1850 memset (new_fnlist
, 0, sizeof (struct next_fnfieldlist
));
1852 if ((*pp
)[0] == 'o' && (*pp
)[1] == 'p' && (*pp
)[2] == CPLUS_MARKER
)
1854 /* This is a completely wierd case. In order to stuff in the
1855 names that might contain colons (the usual name delimiter),
1856 Mike Tiemann defined a different name format which is
1857 signalled if the identifier is "op$". In that case, the
1858 format is "op$::XXXX." where XXXX is the name. This is
1859 used for names like "+" or "=". YUUUUUUUK! FIXME! */
1860 /* This lets the user type "break operator+".
1861 We could just put in "+" as the name, but that wouldn't
1863 static char opname
[32] = {'o', 'p', CPLUS_MARKER
};
1864 char *o
= opname
+ 3;
1866 /* Skip past '::'. */
1869 STABS_CONTINUE (pp
);
1875 main_fn_name
= savestring (opname
, o
- opname
);
1881 main_fn_name
= savestring (*pp
, p
- *pp
);
1882 /* Skip past '::'. */
1885 new_fnlist
-> fn_fieldlist
.name
= main_fn_name
;
1890 (struct next_fnfield
*) xmalloc (sizeof (struct next_fnfield
));
1891 make_cleanup (free
, new_sublist
);
1892 memset (new_sublist
, 0, sizeof (struct next_fnfield
));
1894 /* Check for and handle cretinous dbx symbol name continuation! */
1895 if (look_ahead_type
== NULL
)
1898 STABS_CONTINUE (pp
);
1900 new_sublist
-> fn_field
.type
= read_type (pp
, objfile
);
1903 /* Invalid symtab info for member function. */
1909 /* g++ version 1 kludge */
1910 new_sublist
-> fn_field
.type
= look_ahead_type
;
1911 look_ahead_type
= NULL
;
1921 /* If this is just a stub, then we don't have the real name here. */
1923 if (TYPE_FLAGS (new_sublist
-> fn_field
.type
) & TYPE_FLAG_STUB
)
1925 if (!TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
))
1926 TYPE_DOMAIN_TYPE (new_sublist
-> fn_field
.type
) = type
;
1927 new_sublist
-> fn_field
.is_stub
= 1;
1929 new_sublist
-> fn_field
.physname
= savestring (*pp
, p
- *pp
);
1932 /* Set this member function's visibility fields. */
1935 case VISIBILITY_PRIVATE
:
1936 new_sublist
-> fn_field
.is_private
= 1;
1938 case VISIBILITY_PROTECTED
:
1939 new_sublist
-> fn_field
.is_protected
= 1;
1943 STABS_CONTINUE (pp
);
1946 case 'A': /* Normal functions. */
1947 new_sublist
-> fn_field
.is_const
= 0;
1948 new_sublist
-> fn_field
.is_volatile
= 0;
1951 case 'B': /* `const' member functions. */
1952 new_sublist
-> fn_field
.is_const
= 1;
1953 new_sublist
-> fn_field
.is_volatile
= 0;
1956 case 'C': /* `volatile' member function. */
1957 new_sublist
-> fn_field
.is_const
= 0;
1958 new_sublist
-> fn_field
.is_volatile
= 1;
1961 case 'D': /* `const volatile' member function. */
1962 new_sublist
-> fn_field
.is_const
= 1;
1963 new_sublist
-> fn_field
.is_volatile
= 1;
1966 case '*': /* File compiled with g++ version 1 -- no info */
1971 complain (&const_vol_complaint
, **pp
);
1980 /* virtual member function, followed by index.
1981 The sign bit is set to distinguish pointers-to-methods
1982 from virtual function indicies. Since the array is
1983 in words, the quantity must be shifted left by 1
1984 on 16 bit machine, and by 2 on 32 bit machine, forcing
1985 the sign bit out, and usable as a valid index into
1986 the array. Remove the sign bit here. */
1987 new_sublist
-> fn_field
.voffset
=
1988 (0x7fffffff & read_huge_number (pp
, ';', &nbits
)) + 2;
1992 STABS_CONTINUE (pp
);
1993 if (**pp
== ';' || **pp
== '\0')
1995 /* Must be g++ version 1. */
1996 new_sublist
-> fn_field
.fcontext
= 0;
2000 /* Figure out from whence this virtual function came.
2001 It may belong to virtual function table of
2002 one of its baseclasses. */
2003 look_ahead_type
= read_type (pp
, objfile
);
2006 /* g++ version 1 overloaded methods. */
2010 new_sublist
-> fn_field
.fcontext
= look_ahead_type
;
2019 look_ahead_type
= NULL
;
2025 /* static member function. */
2026 new_sublist
-> fn_field
.voffset
= VOFFSET_STATIC
;
2027 if (strncmp (new_sublist
-> fn_field
.physname
,
2028 main_fn_name
, strlen (main_fn_name
)))
2030 new_sublist
-> fn_field
.is_stub
= 1;
2036 complain (&member_fn_complaint
, (*pp
)[-1]);
2037 /* Fall through into normal member function. */
2040 /* normal member function. */
2041 new_sublist
-> fn_field
.voffset
= 0;
2042 new_sublist
-> fn_field
.fcontext
= 0;
2046 new_sublist
-> next
= sublist
;
2047 sublist
= new_sublist
;
2049 STABS_CONTINUE (pp
);
2051 while (**pp
!= ';' && **pp
!= '\0');
2055 new_fnlist
-> fn_fieldlist
.fn_fields
= (struct fn_field
*)
2056 obstack_alloc (&objfile
-> type_obstack
,
2057 sizeof (struct fn_field
) * length
);
2058 memset (new_fnlist
-> fn_fieldlist
.fn_fields
, 0,
2059 sizeof (struct fn_field
) * length
);
2060 for (i
= length
; (i
--, sublist
); sublist
= sublist
-> next
)
2062 new_fnlist
-> fn_fieldlist
.fn_fields
[i
] = sublist
-> fn_field
;
2065 new_fnlist
-> fn_fieldlist
.length
= length
;
2066 new_fnlist
-> next
= fip
-> fnlist
;
2067 fip
-> fnlist
= new_fnlist
;
2069 total_length
+= length
;
2070 STABS_CONTINUE (pp
);
2075 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2076 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
2077 TYPE_ALLOC (type
, sizeof (struct fn_fieldlist
) * nfn_fields
);
2078 memset (TYPE_FN_FIELDLISTS (type
), 0,
2079 sizeof (struct fn_fieldlist
) * nfn_fields
);
2080 TYPE_NFN_FIELDS (type
) = nfn_fields
;
2081 TYPE_NFN_FIELDS_TOTAL (type
) = total_length
;
2087 /* Special GNU C++ name.
2089 Returns 1 for success, 0 for failure. "failure" means that we can't
2090 keep parsing and it's time for error_type(). */
2093 read_cpp_abbrev (fip
, pp
, type
, objfile
)
2094 struct field_info
*fip
;
2097 struct objfile
*objfile
;
2102 struct type
*context
;
2112 /* At this point, *pp points to something like "22:23=*22...",
2113 where the type number before the ':' is the "context" and
2114 everything after is a regular type definition. Lookup the
2115 type, find it's name, and construct the field name. */
2117 context
= read_type (pp
, objfile
);
2121 case 'f': /* $vf -- a virtual function table pointer */
2122 fip
->list
->field
.name
=
2123 obconcat (&objfile
->type_obstack
, vptr_name
, "", "");
2126 case 'b': /* $vb -- a virtual bsomethingorother */
2127 name
= type_name_no_tag (context
);
2130 complain (&invalid_cpp_type_complaint
, symnum
);
2133 fip
->list
->field
.name
=
2134 obconcat (&objfile
->type_obstack
, vb_name
, name
, "");
2138 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2139 fip
->list
->field
.name
=
2140 obconcat (&objfile
->type_obstack
,
2141 "INVALID_CPLUSPLUS_ABBREV", "", "");
2145 /* At this point, *pp points to the ':'. Skip it and read the
2151 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2154 fip
->list
->field
.type
= read_type (pp
, objfile
);
2156 (*pp
)++; /* Skip the comma. */
2162 fip
->list
->field
.bitpos
= read_huge_number (pp
, ';', &nbits
);
2166 /* This field is unpacked. */
2167 fip
->list
->field
.bitsize
= 0;
2168 fip
->list
->visibility
= VISIBILITY_PRIVATE
;
2172 complain (&invalid_cpp_abbrev_complaint
, *pp
);
2173 /* We have no idea what syntax an unrecognized abbrev would have, so
2174 better return 0. If we returned 1, we would need to at least advance
2175 *pp to avoid an infinite loop. */
2182 read_one_struct_field (fip
, pp
, p
, type
, objfile
)
2183 struct field_info
*fip
;
2187 struct objfile
*objfile
;
2189 fip
-> list
-> field
.name
=
2190 obsavestring (*pp
, p
- *pp
, &objfile
-> type_obstack
);
2193 /* This means we have a visibility for a field coming. */
2197 fip
-> list
-> visibility
= *(*pp
)++;
2201 /* normal dbx-style format, no explicit visibility */
2202 fip
-> list
-> visibility
= VISIBILITY_PUBLIC
;
2205 fip
-> list
-> field
.type
= read_type (pp
, objfile
);
2210 /* Possible future hook for nested types. */
2213 fip
-> list
-> field
.bitpos
= (long)-2; /* nested type */
2219 /* Static class member. */
2220 fip
-> list
-> field
.bitpos
= (long) -1;
2226 fip
-> list
-> field
.bitsize
= (long) savestring (*pp
, p
- *pp
);
2230 else if (**pp
!= ',')
2232 /* Bad structure-type format. */
2233 complain (&stabs_general_complaint
, "bad structure-type format");
2237 (*pp
)++; /* Skip the comma. */
2241 fip
-> list
-> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2244 complain (&stabs_general_complaint
, "bad structure-type format");
2247 fip
-> list
-> field
.bitsize
= read_huge_number (pp
, ';', &nbits
);
2250 complain (&stabs_general_complaint
, "bad structure-type format");
2255 if (fip
-> list
-> field
.bitpos
== 0 && fip
-> list
-> field
.bitsize
== 0)
2257 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2258 it is a field which has been optimized out. The correct stab for
2259 this case is to use VISIBILITY_IGNORE, but that is a recent
2260 invention. (2) It is a 0-size array. For example
2261 union { int num; char str[0]; } foo. Printing "<no value>" for
2262 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2263 will continue to work, and a 0-size array as a whole doesn't
2264 have any contents to print.
2266 I suspect this probably could also happen with gcc -gstabs (not
2267 -gstabs+) for static fields, and perhaps other C++ extensions.
2268 Hopefully few people use -gstabs with gdb, since it is intended
2269 for dbx compatibility. */
2271 /* Ignore this field. */
2272 fip
-> list
-> visibility
= VISIBILITY_IGNORE
;
2276 /* Detect an unpacked field and mark it as such.
2277 dbx gives a bit size for all fields.
2278 Note that forward refs cannot be packed,
2279 and treat enums as if they had the width of ints. */
2281 if (TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_INT
2282 && TYPE_CODE (fip
-> list
-> field
.type
) != TYPE_CODE_ENUM
)
2284 fip
-> list
-> field
.bitsize
= 0;
2286 if ((fip
-> list
-> field
.bitsize
2287 == TARGET_CHAR_BIT
* TYPE_LENGTH (fip
-> list
-> field
.type
)
2288 || (TYPE_CODE (fip
-> list
-> field
.type
) == TYPE_CODE_ENUM
2289 && (fip
-> list
-> field
.bitsize
2294 fip
-> list
-> field
.bitpos
% 8 == 0)
2296 fip
-> list
-> field
.bitsize
= 0;
2302 /* Read struct or class data fields. They have the form:
2304 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2306 At the end, we see a semicolon instead of a field.
2308 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2311 The optional VISIBILITY is one of:
2313 '/0' (VISIBILITY_PRIVATE)
2314 '/1' (VISIBILITY_PROTECTED)
2315 '/2' (VISIBILITY_PUBLIC)
2316 '/9' (VISIBILITY_IGNORE)
2318 or nothing, for C style fields with public visibility.
2320 Returns 1 for success, 0 for failure. */
2323 read_struct_fields (fip
, pp
, type
, objfile
)
2324 struct field_info
*fip
;
2327 struct objfile
*objfile
;
2330 struct nextfield
*new;
2332 /* We better set p right now, in case there are no fields at all... */
2336 /* Read each data member type until we find the terminating ';' at the end of
2337 the data member list, or break for some other reason such as finding the
2338 start of the member function list. */
2342 STABS_CONTINUE (pp
);
2343 /* Get space to record the next field's data. */
2344 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2345 make_cleanup (free
, new);
2346 memset (new, 0, sizeof (struct nextfield
));
2347 new -> next
= fip
-> list
;
2350 /* Get the field name. */
2353 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2354 unless the CPLUS_MARKER is followed by an underscore, in
2355 which case it is just the name of an anonymous type, which we
2356 should handle like any other type name. We accept either '$'
2357 or '.', because a field name can never contain one of these
2358 characters except as a CPLUS_MARKER (we probably should be
2359 doing that in most parts of GDB). */
2361 if ((*p
== '$' || *p
== '.') && p
[1] != '_')
2363 if (!read_cpp_abbrev (fip
, pp
, type
, objfile
))
2368 /* Look for the ':' that separates the field name from the field
2369 values. Data members are delimited by a single ':', while member
2370 functions are delimited by a pair of ':'s. When we hit the member
2371 functions (if any), terminate scan loop and return. */
2373 while (*p
!= ':' && *p
!= '\0')
2380 /* Check to see if we have hit the member functions yet. */
2385 read_one_struct_field (fip
, pp
, p
, type
, objfile
);
2387 if (p
[0] == ':' && p
[1] == ':')
2389 /* chill the list of fields: the last entry (at the head) is a
2390 partially constructed entry which we now scrub. */
2391 fip
-> list
= fip
-> list
-> next
;
2396 /* The stabs for C++ derived classes contain baseclass information which
2397 is marked by a '!' character after the total size. This function is
2398 called when we encounter the baseclass marker, and slurps up all the
2399 baseclass information.
2401 Immediately following the '!' marker is the number of base classes that
2402 the class is derived from, followed by information for each base class.
2403 For each base class, there are two visibility specifiers, a bit offset
2404 to the base class information within the derived class, a reference to
2405 the type for the base class, and a terminating semicolon.
2407 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2409 Baseclass information marker __________________|| | | | | | |
2410 Number of baseclasses __________________________| | | | | | |
2411 Visibility specifiers (2) ________________________| | | | | |
2412 Offset in bits from start of class _________________| | | | |
2413 Type number for base class ___________________________| | | |
2414 Visibility specifiers (2) _______________________________| | |
2415 Offset in bits from start of class ________________________| |
2416 Type number of base class ____________________________________|
2418 Return 1 for success, 0 for (error-type-inducing) failure. */
2421 read_baseclasses (fip
, pp
, type
, objfile
)
2422 struct field_info
*fip
;
2425 struct objfile
*objfile
;
2428 struct nextfield
*new;
2436 /* Skip the '!' baseclass information marker. */
2440 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2443 TYPE_N_BASECLASSES (type
) = read_huge_number (pp
, ',', &nbits
);
2449 /* Some stupid compilers have trouble with the following, so break
2450 it up into simpler expressions. */
2451 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
2452 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
2455 int num_bytes
= B_BYTES (TYPE_N_BASECLASSES (type
));
2458 pointer
= (char *) TYPE_ALLOC (type
, num_bytes
);
2459 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*) pointer
;
2463 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
2465 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
2467 new = (struct nextfield
*) xmalloc (sizeof (struct nextfield
));
2468 make_cleanup (free
, new);
2469 memset (new, 0, sizeof (struct nextfield
));
2470 new -> next
= fip
-> list
;
2472 new -> field
.bitsize
= 0; /* this should be an unpacked field! */
2474 STABS_CONTINUE (pp
);
2478 /* Nothing to do. */
2481 SET_TYPE_FIELD_VIRTUAL (type
, i
);
2484 /* Unknown character. Complain and treat it as non-virtual. */
2486 static struct complaint msg
= {
2487 "Unknown virtual character `%c' for baseclass", 0, 0};
2488 complain (&msg
, **pp
);
2493 new -> visibility
= *(*pp
)++;
2494 switch (new -> visibility
)
2496 case VISIBILITY_PRIVATE
:
2497 case VISIBILITY_PROTECTED
:
2498 case VISIBILITY_PUBLIC
:
2501 /* Bad visibility format. Complain and treat it as
2504 static struct complaint msg
= {
2505 "Unknown visibility `%c' for baseclass", 0, 0};
2506 complain (&msg
, new -> visibility
);
2507 new -> visibility
= VISIBILITY_PUBLIC
;
2514 /* The remaining value is the bit offset of the portion of the object
2515 corresponding to this baseclass. Always zero in the absence of
2516 multiple inheritance. */
2518 new -> field
.bitpos
= read_huge_number (pp
, ',', &nbits
);
2523 /* The last piece of baseclass information is the type of the
2524 base class. Read it, and remember it's type name as this
2527 new -> field
.type
= read_type (pp
, objfile
);
2528 new -> field
.name
= type_name_no_tag (new -> field
.type
);
2530 /* skip trailing ';' and bump count of number of fields seen */
2539 /* The tail end of stabs for C++ classes that contain a virtual function
2540 pointer contains a tilde, a %, and a type number.
2541 The type number refers to the base class (possibly this class itself) which
2542 contains the vtable pointer for the current class.
2544 This function is called when we have parsed all the method declarations,
2545 so we can look for the vptr base class info. */
2548 read_tilde_fields (fip
, pp
, type
, objfile
)
2549 struct field_info
*fip
;
2552 struct objfile
*objfile
;
2556 STABS_CONTINUE (pp
);
2558 /* If we are positioned at a ';', then skip it. */
2568 if (**pp
== '=' || **pp
== '+' || **pp
== '-')
2570 /* Obsolete flags that used to indicate the presence
2571 of constructors and/or destructors. */
2575 /* Read either a '%' or the final ';'. */
2576 if (*(*pp
)++ == '%')
2578 /* The next number is the type number of the base class
2579 (possibly our own class) which supplies the vtable for
2580 this class. Parse it out, and search that class to find
2581 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
2582 and TYPE_VPTR_FIELDNO. */
2587 t
= read_type (pp
, objfile
);
2589 while (*p
!= '\0' && *p
!= ';')
2595 /* Premature end of symbol. */
2599 TYPE_VPTR_BASETYPE (type
) = t
;
2600 if (type
== t
) /* Our own class provides vtbl ptr */
2602 for (i
= TYPE_NFIELDS (t
) - 1;
2603 i
>= TYPE_N_BASECLASSES (t
);
2606 if (! strncmp (TYPE_FIELD_NAME (t
, i
), vptr_name
,
2607 sizeof (vptr_name
) - 1))
2609 TYPE_VPTR_FIELDNO (type
) = i
;
2613 /* Virtual function table field not found. */
2614 complain (&vtbl_notfound_complaint
, TYPE_NAME (type
));
2619 TYPE_VPTR_FIELDNO (type
) = TYPE_VPTR_FIELDNO (t
);
2630 attach_fn_fields_to_type (fip
, type
)
2631 struct field_info
*fip
;
2632 register struct type
*type
;
2636 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2638 if (TYPE_CODE (TYPE_BASECLASS (type
, n
)) == TYPE_CODE_UNDEF
)
2640 /* @@ Memory leak on objfile -> type_obstack? */
2643 TYPE_NFN_FIELDS_TOTAL (type
) +=
2644 TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type
, n
));
2647 for (n
= TYPE_NFN_FIELDS (type
);
2648 fip
-> fnlist
!= NULL
;
2649 fip
-> fnlist
= fip
-> fnlist
-> next
)
2651 --n
; /* Circumvent Sun3 compiler bug */
2652 TYPE_FN_FIELDLISTS (type
)[n
] = fip
-> fnlist
-> fn_fieldlist
;
2657 /* Create the vector of fields, and record how big it is.
2658 We need this info to record proper virtual function table information
2659 for this class's virtual functions. */
2662 attach_fields_to_type (fip
, type
, objfile
)
2663 struct field_info
*fip
;
2664 register struct type
*type
;
2665 struct objfile
*objfile
;
2667 register int nfields
= 0;
2668 register int non_public_fields
= 0;
2669 register struct nextfield
*scan
;
2671 /* Count up the number of fields that we have, as well as taking note of
2672 whether or not there are any non-public fields, which requires us to
2673 allocate and build the private_field_bits and protected_field_bits
2676 for (scan
= fip
-> list
; scan
!= NULL
; scan
= scan
-> next
)
2679 if (scan
-> visibility
!= VISIBILITY_PUBLIC
)
2681 non_public_fields
++;
2685 /* Now we know how many fields there are, and whether or not there are any
2686 non-public fields. Record the field count, allocate space for the
2687 array of fields, and create blank visibility bitfields if necessary. */
2689 TYPE_NFIELDS (type
) = nfields
;
2690 TYPE_FIELDS (type
) = (struct field
*)
2691 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
2692 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
2694 if (non_public_fields
)
2696 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
2698 TYPE_FIELD_PRIVATE_BITS (type
) =
2699 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2700 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
2702 TYPE_FIELD_PROTECTED_BITS (type
) =
2703 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2704 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
2706 TYPE_FIELD_IGNORE_BITS (type
) =
2707 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
2708 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
2711 /* Copy the saved-up fields into the field vector. Start from the head
2712 of the list, adding to the tail of the field array, so that they end
2713 up in the same order in the array in which they were added to the list. */
2715 while (nfields
-- > 0)
2717 TYPE_FIELD (type
, nfields
) = fip
-> list
-> field
;
2718 switch (fip
-> list
-> visibility
)
2720 case VISIBILITY_PRIVATE
:
2721 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
2724 case VISIBILITY_PROTECTED
:
2725 SET_TYPE_FIELD_PROTECTED (type
, nfields
);
2728 case VISIBILITY_IGNORE
:
2729 SET_TYPE_FIELD_IGNORE (type
, nfields
);
2732 case VISIBILITY_PUBLIC
:
2736 /* Unknown visibility. Complain and treat it as public. */
2738 static struct complaint msg
= {
2739 "Unknown visibility `%c' for field", 0, 0};
2740 complain (&msg
, fip
-> list
-> visibility
);
2744 fip
-> list
= fip
-> list
-> next
;
2749 /* Read the description of a structure (or union type) and return an object
2750 describing the type.
2752 PP points to a character pointer that points to the next unconsumed token
2753 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2754 *PP will point to "4a:1,0,32;;".
2756 TYPE points to an incomplete type that needs to be filled in.
2758 OBJFILE points to the current objfile from which the stabs information is
2759 being read. (Note that it is redundant in that TYPE also contains a pointer
2760 to this same objfile, so it might be a good idea to eliminate it. FIXME).
2763 static struct type
*
2764 read_struct_type (pp
, type
, objfile
)
2767 struct objfile
*objfile
;
2769 struct cleanup
*back_to
;
2770 struct field_info fi
;
2775 back_to
= make_cleanup (null_cleanup
, 0);
2777 INIT_CPLUS_SPECIFIC (type
);
2778 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2780 /* First comes the total size in bytes. */
2784 TYPE_LENGTH (type
) = read_huge_number (pp
, 0, &nbits
);
2786 return error_type (pp
);
2789 /* Now read the baseclasses, if any, read the regular C struct or C++
2790 class member fields, attach the fields to the type, read the C++
2791 member functions, attach them to the type, and then read any tilde
2792 field (baseclass specifier for the class holding the main vtable). */
2794 if (!read_baseclasses (&fi
, pp
, type
, objfile
)
2795 || !read_struct_fields (&fi
, pp
, type
, objfile
)
2796 || !attach_fields_to_type (&fi
, type
, objfile
)
2797 || !read_member_functions (&fi
, pp
, type
, objfile
)
2798 || !attach_fn_fields_to_type (&fi
, type
)
2799 || !read_tilde_fields (&fi
, pp
, type
, objfile
))
2801 do_cleanups (back_to
);
2802 return (error_type (pp
));
2805 do_cleanups (back_to
);
2809 /* Read a definition of an array type,
2810 and create and return a suitable type object.
2811 Also creates a range type which represents the bounds of that
2814 static struct type
*
2815 read_array_type (pp
, type
, objfile
)
2817 register struct type
*type
;
2818 struct objfile
*objfile
;
2820 struct type
*index_type
, *element_type
, *range_type
;
2825 /* Format of an array type:
2826 "ar<index type>;lower;upper;<array_contents_type>". Put code in
2829 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
2830 for these, produce a type like float[][]. */
2832 index_type
= read_type (pp
, objfile
);
2834 /* Improper format of array type decl. */
2835 return error_type (pp
);
2838 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2843 lower
= read_huge_number (pp
, ';', &nbits
);
2845 return error_type (pp
);
2847 if (!(**pp
>= '0' && **pp
<= '9') && **pp
!= '-')
2852 upper
= read_huge_number (pp
, ';', &nbits
);
2854 return error_type (pp
);
2856 element_type
= read_type (pp
, objfile
);
2865 create_range_type ((struct type
*) NULL
, index_type
, lower
, upper
);
2866 type
= create_array_type (type
, element_type
, range_type
);
2868 /* If we have an array whose element type is not yet known, but whose
2869 bounds *are* known, record it to be adjusted at the end of the file. */
2870 /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
2871 the two have the same effect except that the latter is cleaner and the
2872 former would be wrong for types which really are zero-length (if we
2875 if (TYPE_LENGTH (element_type
) == 0 && !adjustable
)
2877 TYPE_FLAGS (type
) |= TYPE_FLAG_TARGET_STUB
;
2878 add_undefined_type (type
);
2885 /* Read a definition of an enumeration type,
2886 and create and return a suitable type object.
2887 Also defines the symbols that represent the values of the type. */
2889 static struct type
*
2890 read_enum_type (pp
, type
, objfile
)
2892 register struct type
*type
;
2893 struct objfile
*objfile
;
2898 register struct symbol
*sym
;
2900 struct pending
**symlist
;
2901 struct pending
*osyms
, *syms
;
2905 /* FIXME! The stabs produced by Sun CC merrily define things that ought
2906 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
2907 to do? For now, force all enum values to file scope. */
2908 if (within_function
)
2909 symlist
= &local_symbols
;
2912 symlist
= &file_symbols
;
2914 o_nsyms
= osyms
? osyms
->nsyms
: 0;
2916 /* Read the value-names and their values.
2917 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
2918 A semicolon or comma instead of a NAME means the end. */
2919 while (**pp
&& **pp
!= ';' && **pp
!= ',')
2922 STABS_CONTINUE (pp
);
2924 while (*p
!= ':') p
++;
2925 name
= obsavestring (*pp
, p
- *pp
, &objfile
-> symbol_obstack
);
2927 n
= read_huge_number (pp
, ',', &nbits
);
2929 return error_type (pp
);
2931 sym
= (struct symbol
*)
2932 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
2933 memset (sym
, 0, sizeof (struct symbol
));
2934 SYMBOL_NAME (sym
) = name
;
2935 SYMBOL_LANGUAGE (sym
) = current_subfile
-> language
;
2936 SYMBOL_CLASS (sym
) = LOC_CONST
;
2937 SYMBOL_NAMESPACE (sym
) = VAR_NAMESPACE
;
2938 SYMBOL_VALUE (sym
) = n
;
2939 add_symbol_to_list (sym
, symlist
);
2944 (*pp
)++; /* Skip the semicolon. */
2946 /* Now fill in the fields of the type-structure. */
2948 TYPE_LENGTH (type
) = TARGET_INT_BIT
/ HOST_CHAR_BIT
;
2949 TYPE_CODE (type
) = TYPE_CODE_ENUM
;
2950 TYPE_FLAGS (type
) &= ~TYPE_FLAG_STUB
;
2951 TYPE_NFIELDS (type
) = nsyms
;
2952 TYPE_FIELDS (type
) = (struct field
*)
2953 TYPE_ALLOC (type
, sizeof (struct field
) * nsyms
);
2954 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nsyms
);
2956 /* Find the symbols for the values and put them into the type.
2957 The symbols can be found in the symlist that we put them on
2958 to cause them to be defined. osyms contains the old value
2959 of that symlist; everything up to there was defined by us. */
2960 /* Note that we preserve the order of the enum constants, so
2961 that in something like "enum {FOO, LAST_THING=FOO}" we print
2962 FOO, not LAST_THING. */
2964 for (syms
= *symlist
, n
= 0; syms
; syms
= syms
->next
)
2969 for (; j
< syms
->nsyms
; j
++,n
++)
2971 struct symbol
*xsym
= syms
->symbol
[j
];
2972 SYMBOL_TYPE (xsym
) = type
;
2973 TYPE_FIELD_NAME (type
, n
) = SYMBOL_NAME (xsym
);
2974 TYPE_FIELD_VALUE (type
, n
) = 0;
2975 TYPE_FIELD_BITPOS (type
, n
) = SYMBOL_VALUE (xsym
);
2976 TYPE_FIELD_BITSIZE (type
, n
) = 0;
2983 /* This screws up perfectly good C programs with enums. FIXME. */
2984 /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
2985 if(TYPE_NFIELDS(type
) == 2 &&
2986 ((STREQ(TYPE_FIELD_NAME(type
,0),"TRUE") &&
2987 STREQ(TYPE_FIELD_NAME(type
,1),"FALSE")) ||
2988 (STREQ(TYPE_FIELD_NAME(type
,1),"TRUE") &&
2989 STREQ(TYPE_FIELD_NAME(type
,0),"FALSE"))))
2990 TYPE_CODE(type
) = TYPE_CODE_BOOL
;
2996 /* Sun's ACC uses a somewhat saner method for specifying the builtin
2997 typedefs in every file (for int, long, etc):
2999 type = b <signed> <width>; <offset>; <nbits>
3000 signed = u or s. Possible c in addition to u or s (for char?).
3001 offset = offset from high order bit to start bit of type.
3002 width is # bytes in object of this type, nbits is # bits in type.
3004 The width/offset stuff appears to be for small objects stored in
3005 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3008 static struct type
*
3009 read_sun_builtin_type (pp
, typenums
, objfile
)
3012 struct objfile
*objfile
;
3027 return error_type (pp
);
3031 /* For some odd reason, all forms of char put a c here. This is strange
3032 because no other type has this honor. We can safely ignore this because
3033 we actually determine 'char'acterness by the number of bits specified in
3039 /* The first number appears to be the number of bytes occupied
3040 by this type, except that unsigned short is 4 instead of 2.
3041 Since this information is redundant with the third number,
3042 we will ignore it. */
3043 read_huge_number (pp
, ';', &nbits
);
3045 return error_type (pp
);
3047 /* The second number is always 0, so ignore it too. */
3048 read_huge_number (pp
, ';', &nbits
);
3050 return error_type (pp
);
3052 /* The third number is the number of bits for this type. */
3053 type_bits
= read_huge_number (pp
, 0, &nbits
);
3055 return error_type (pp
);
3057 return init_type (type_bits
== 0 ? TYPE_CODE_VOID
: TYPE_CODE_INT
,
3058 type_bits
/ TARGET_CHAR_BIT
,
3059 signed_type
? 0 : TYPE_FLAG_UNSIGNED
, (char *)NULL
,
3063 static struct type
*
3064 read_sun_floating_type (pp
, typenums
, objfile
)
3067 struct objfile
*objfile
;
3073 /* The first number has more details about the type, for example
3075 details
= read_huge_number (pp
, ';', &nbits
);
3077 return error_type (pp
);
3079 /* The second number is the number of bytes occupied by this type */
3080 nbytes
= read_huge_number (pp
, ';', &nbits
);
3082 return error_type (pp
);
3084 if (details
== NF_COMPLEX
|| details
== NF_COMPLEX16
3085 || details
== NF_COMPLEX32
)
3086 /* This is a type we can't handle, but we do know the size.
3087 We also will be able to give it a name. */
3088 return init_type (TYPE_CODE_ERROR
, nbytes
, 0, NULL
, objfile
);
3090 return init_type (TYPE_CODE_FLT
, nbytes
, 0, NULL
, objfile
);
3093 /* Read a number from the string pointed to by *PP.
3094 The value of *PP is advanced over the number.
3095 If END is nonzero, the character that ends the
3096 number must match END, or an error happens;
3097 and that character is skipped if it does match.
3098 If END is zero, *PP is left pointing to that character.
3100 If the number fits in a long, set *BITS to 0 and return the value.
3101 If not, set *BITS to be the number of bits in the number and return 0.
3103 If encounter garbage, set *BITS to -1 and return 0. */
3106 read_huge_number (pp
, end
, bits
)
3126 /* Leading zero means octal. GCC uses this to output values larger
3127 than an int (because that would be hard in decimal). */
3134 upper_limit
= LONG_MAX
/ radix
;
3135 while ((c
= *p
++) >= '0' && c
< ('0' + radix
))
3137 if (n
<= upper_limit
)
3140 n
+= c
- '0'; /* FIXME this overflows anyway */
3145 /* This depends on large values being output in octal, which is
3152 /* Ignore leading zeroes. */
3156 else if (c
== '2' || c
== '3')
3182 /* Large decimal constants are an error (because it is hard to
3183 count how many bits are in them). */
3189 /* -0x7f is the same as 0x80. So deal with it by adding one to
3190 the number of bits. */
3202 /* It's *BITS which has the interesting information. */
3206 static struct type
*
3207 read_range_type (pp
, typenums
, objfile
)
3210 struct objfile
*objfile
;
3216 struct type
*result_type
;
3217 struct type
*index_type
;
3219 /* First comes a type we are a subrange of.
3220 In C it is usually 0, 1 or the type being defined. */
3221 /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
3222 not just a type number. */
3223 if (read_type_number (pp
, rangenums
) != 0)
3224 return error_type (pp
);
3225 self_subrange
= (rangenums
[0] == typenums
[0] &&
3226 rangenums
[1] == typenums
[1]);
3228 /* A semicolon should now follow; skip it. */
3232 /* The remaining two operands are usually lower and upper bounds
3233 of the range. But in some special cases they mean something else. */
3234 n2
= read_huge_number (pp
, ';', &n2bits
);
3235 n3
= read_huge_number (pp
, ';', &n3bits
);
3237 if (n2bits
== -1 || n3bits
== -1)
3238 return error_type (pp
);
3240 /* If limits are huge, must be large integral type. */
3241 if (n2bits
!= 0 || n3bits
!= 0)
3243 char got_signed
= 0;
3244 char got_unsigned
= 0;
3245 /* Number of bits in the type. */
3248 /* Range from 0 to <large number> is an unsigned large integral type. */
3249 if ((n2bits
== 0 && n2
== 0) && n3bits
!= 0)
3254 /* Range from <large number> to <large number>-1 is a large signed
3255 integral type. Take care of the case where <large number> doesn't
3256 fit in a long but <large number>-1 does. */
3257 else if ((n2bits
!= 0 && n3bits
!= 0 && n2bits
== n3bits
+ 1)
3258 || (n2bits
!= 0 && n3bits
== 0
3259 && (n2bits
== sizeof (long) * HOST_CHAR_BIT
)
3266 if (got_signed
|| got_unsigned
)
3268 return init_type (TYPE_CODE_INT
, nbits
/ TARGET_CHAR_BIT
,
3269 got_unsigned
? TYPE_FLAG_UNSIGNED
: 0, NULL
,
3273 return error_type (pp
);
3276 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3277 if (self_subrange
&& n2
== 0 && n3
== 0)
3278 return init_type (TYPE_CODE_VOID
, 0, 0, NULL
, objfile
);
3280 /* If n3 is zero and n2 is not, we want a floating type,
3281 and n2 is the width in bytes.
3283 Fortran programs appear to use this for complex types also,
3284 and they give no way to distinguish between double and single-complex!
3286 GDB does not have complex types.
3288 Just return the complex as a float of that size. It won't work right
3289 for the complex values, but at least it makes the file loadable. */
3291 if (n3
== 0 && n2
> 0)
3293 return init_type (TYPE_CODE_FLT
, n2
, 0, NULL
, objfile
);
3296 /* If the upper bound is -1, it must really be an unsigned int. */
3298 else if (n2
== 0 && n3
== -1)
3300 /* It is unsigned int or unsigned long. */
3301 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3302 compatibility hack. */
3303 return init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3304 TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3307 /* Special case: char is defined (Who knows why) as a subrange of
3308 itself with range 0-127. */
3309 else if (self_subrange
&& n2
== 0 && n3
== 127)
3310 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3312 /* We used to do this only for subrange of self or subrange of int. */
3316 /* n3 actually gives the size. */
3317 return init_type (TYPE_CODE_INT
, - n3
, TYPE_FLAG_UNSIGNED
,
3320 return init_type (TYPE_CODE_INT
, 1, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3322 return init_type (TYPE_CODE_INT
, 2, TYPE_FLAG_UNSIGNED
, NULL
, objfile
);
3324 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3325 "unsigned long", and we already checked for that,
3326 so don't need to test for it here. */
3328 /* I think this is for Convex "long long". Since I don't know whether
3329 Convex sets self_subrange, I also accept that particular size regardless
3330 of self_subrange. */
3331 else if (n3
== 0 && n2
< 0
3333 || n2
== - TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
))
3334 return init_type (TYPE_CODE_INT
, - n2
, 0, NULL
, objfile
);
3335 else if (n2
== -n3
-1)
3338 return init_type (TYPE_CODE_INT
, 1, 0, NULL
, objfile
);
3340 return init_type (TYPE_CODE_INT
, 2, 0, NULL
, objfile
);
3341 if (n3
== 0x7fffffff)
3342 return init_type (TYPE_CODE_INT
, 4, 0, NULL
, objfile
);
3345 /* We have a real range type on our hands. Allocate space and
3346 return a real pointer. */
3348 /* At this point I don't have the faintest idea how to deal with
3349 a self_subrange type; I'm going to assume that this is used
3350 as an idiom, and that all of them are special cases. So . . . */
3352 return error_type (pp
);
3354 index_type
= *dbx_lookup_type (rangenums
);
3355 if (index_type
== NULL
)
3357 /* Does this actually ever happen? Is that why we are worrying
3358 about dealing with it rather than just calling error_type? */
3360 static struct type
*range_type_index
;
3362 complain (&range_type_base_complaint
, rangenums
[1]);
3363 if (range_type_index
== NULL
)
3365 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
3366 0, "range type index type", NULL
);
3367 index_type
= range_type_index
;
3370 result_type
= create_range_type ((struct type
*) NULL
, index_type
, n2
, n3
);
3371 return (result_type
);
3374 /* Read in an argument list. This is a list of types, separated by commas
3375 and terminated with END. Return the list of types read in, or (struct type
3376 **)-1 if there is an error. */
3378 static struct type
**
3379 read_args (pp
, end
, objfile
)
3382 struct objfile
*objfile
;
3384 /* FIXME! Remove this arbitrary limit! */
3385 struct type
*types
[1024], **rval
; /* allow for fns of 1023 parameters */
3391 /* Invalid argument list: no ','. */
3392 return (struct type
**)-1;
3394 STABS_CONTINUE (pp
);
3395 types
[n
++] = read_type (pp
, objfile
);
3397 (*pp
)++; /* get past `end' (the ':' character) */
3401 rval
= (struct type
**) xmalloc (2 * sizeof (struct type
*));
3403 else if (TYPE_CODE (types
[n
-1]) != TYPE_CODE_VOID
)
3405 rval
= (struct type
**) xmalloc ((n
+ 1) * sizeof (struct type
*));
3406 memset (rval
+ n
, 0, sizeof (struct type
*));
3410 rval
= (struct type
**) xmalloc (n
* sizeof (struct type
*));
3412 memcpy (rval
, types
, n
* sizeof (struct type
*));
3416 /* Common block handling. */
3418 /* List of symbols declared since the last BCOMM. This list is a tail
3419 of local_symbols. When ECOMM is seen, the symbols on the list
3420 are noted so their proper addresses can be filled in later,
3421 using the common block base address gotten from the assembler
3424 static struct pending
*common_block
;
3425 static int common_block_i
;
3427 /* Name of the current common block. We get it from the BCOMM instead of the
3428 ECOMM to match IBM documentation (even though IBM puts the name both places
3429 like everyone else). */
3430 static char *common_block_name
;
3432 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
3433 to remain after this function returns. */
3436 common_block_start (name
, objfile
)
3438 struct objfile
*objfile
;
3440 if (common_block_name
!= NULL
)
3442 static struct complaint msg
= {
3443 "Invalid symbol data: common block within common block",
3447 common_block
= local_symbols
;
3448 common_block_i
= local_symbols
? local_symbols
->nsyms
: 0;
3449 common_block_name
= obsavestring (name
, strlen (name
),
3450 &objfile
-> symbol_obstack
);
3453 /* Process a N_ECOMM symbol. */
3456 common_block_end (objfile
)
3457 struct objfile
*objfile
;
3459 /* Symbols declared since the BCOMM are to have the common block
3460 start address added in when we know it. common_block and
3461 common_block_i point to the first symbol after the BCOMM in
3462 the local_symbols list; copy the list and hang it off the
3463 symbol for the common block name for later fixup. */
3466 struct pending
*new = 0;
3467 struct pending
*next
;
3470 if (common_block_name
== NULL
)
3472 static struct complaint msg
= {"ECOMM symbol unmatched by BCOMM", 0, 0};
3477 sym
= (struct symbol
*)
3478 obstack_alloc (&objfile
-> symbol_obstack
, sizeof (struct symbol
));
3479 memset (sym
, 0, sizeof (struct symbol
));
3480 SYMBOL_NAME (sym
) = common_block_name
;
3481 SYMBOL_CLASS (sym
) = LOC_BLOCK
;
3483 /* Now we copy all the symbols which have been defined since the BCOMM. */
3485 /* Copy all the struct pendings before common_block. */
3486 for (next
= local_symbols
;
3487 next
!= NULL
&& next
!= common_block
;
3490 for (j
= 0; j
< next
->nsyms
; j
++)
3491 add_symbol_to_list (next
->symbol
[j
], &new);
3494 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
3495 NULL, it means copy all the local symbols (which we already did
3498 if (common_block
!= NULL
)
3499 for (j
= common_block_i
; j
< common_block
->nsyms
; j
++)
3500 add_symbol_to_list (common_block
->symbol
[j
], &new);
3502 SYMBOL_NAMESPACE (sym
) = (enum namespace)((long) new);
3504 /* Should we be putting local_symbols back to what it was?
3507 i
= hashname (SYMBOL_NAME (sym
));
3508 SYMBOL_VALUE_CHAIN (sym
) = global_sym_chain
[i
];
3509 global_sym_chain
[i
] = sym
;
3510 common_block_name
= NULL
;
3513 /* Add a common block's start address to the offset of each symbol
3514 declared to be in it (by being between a BCOMM/ECOMM pair that uses
3515 the common block name). */
3518 fix_common_block (sym
, valu
)
3522 struct pending
*next
= (struct pending
*) SYMBOL_NAMESPACE (sym
);
3523 for ( ; next
; next
= next
->next
)
3526 for (j
= next
->nsyms
- 1; j
>= 0; j
--)
3527 SYMBOL_VALUE_ADDRESS (next
->symbol
[j
]) += valu
;
3533 /* What about types defined as forward references inside of a small lexical
3535 /* Add a type to the list of undefined types to be checked through
3536 once this file has been read in. */
3539 add_undefined_type (type
)
3542 if (undef_types_length
== undef_types_allocated
)
3544 undef_types_allocated
*= 2;
3545 undef_types
= (struct type
**)
3546 xrealloc ((char *) undef_types
,
3547 undef_types_allocated
* sizeof (struct type
*));
3549 undef_types
[undef_types_length
++] = type
;
3552 /* Go through each undefined type, see if it's still undefined, and fix it
3553 up if possible. We have two kinds of undefined types:
3555 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
3556 Fix: update array length using the element bounds
3557 and the target type's length.
3558 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
3559 yet defined at the time a pointer to it was made.
3560 Fix: Do a full lookup on the struct/union tag. */
3562 cleanup_undefined_types ()
3566 for (type
= undef_types
; type
< undef_types
+ undef_types_length
; type
++)
3568 switch (TYPE_CODE (*type
))
3571 case TYPE_CODE_STRUCT
:
3572 case TYPE_CODE_UNION
:
3573 case TYPE_CODE_ENUM
:
3575 /* Check if it has been defined since. Need to do this here
3576 as well as in check_stub_type to deal with the (legitimate in
3577 C though not C++) case of several types with the same name
3578 in different source files. */
3579 if (TYPE_FLAGS (*type
) & TYPE_FLAG_STUB
)
3581 struct pending
*ppt
;
3583 /* Name of the type, without "struct" or "union" */
3584 char *typename
= TYPE_TAG_NAME (*type
);
3586 if (typename
== NULL
)
3588 static struct complaint msg
= {"need a type name", 0, 0};
3592 for (ppt
= file_symbols
; ppt
; ppt
= ppt
->next
)
3594 for (i
= 0; i
< ppt
->nsyms
; i
++)
3596 struct symbol
*sym
= ppt
->symbol
[i
];
3598 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3599 && SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
3600 && (TYPE_CODE (SYMBOL_TYPE (sym
)) ==
3602 && STREQ (SYMBOL_NAME (sym
), typename
))
3604 memcpy (*type
, SYMBOL_TYPE (sym
),
3605 sizeof (struct type
));
3613 case TYPE_CODE_ARRAY
:
3615 /* This is a kludge which is here for historical reasons
3616 because I suspect that check_stub_type does not get
3617 called everywhere it needs to be called for arrays. Even
3618 with this kludge, those places are broken for the case
3619 where the stub type is defined in another compilation
3620 unit, but this kludge at least deals with it for the case
3621 in which it is the same compilation unit.
3623 Don't try to do this by calling check_stub_type; it might
3624 cause symbols to be read in lookup_symbol, and the symbol
3625 reader is not reentrant. */
3627 struct type
*range_type
;
3630 if (TYPE_LENGTH (*type
) != 0) /* Better be unknown */
3632 if (TYPE_NFIELDS (*type
) != 1)
3634 range_type
= TYPE_FIELD_TYPE (*type
, 0);
3635 if (TYPE_CODE (range_type
) != TYPE_CODE_RANGE
)
3638 /* Now recompute the length of the array type, based on its
3639 number of elements and the target type's length. */
3640 lower
= TYPE_FIELD_BITPOS (range_type
, 0);
3641 upper
= TYPE_FIELD_BITPOS (range_type
, 1);
3642 TYPE_LENGTH (*type
) = (upper
- lower
+ 1)
3643 * TYPE_LENGTH (TYPE_TARGET_TYPE (*type
));
3645 /* If the target type is not a stub, we could be clearing
3646 TYPE_FLAG_TARGET_STUB for *type. */
3653 static struct complaint msg
= {"\
3654 GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0};
3655 complain (&msg
, TYPE_CODE (*type
));
3661 undef_types_length
= 0;
3664 /* Scan through all of the global symbols defined in the object file,
3665 assigning values to the debugging symbols that need to be assigned
3666 to. Get these symbols from the minimal symbol table. */
3669 scan_file_globals (objfile
)
3670 struct objfile
*objfile
;
3673 struct minimal_symbol
*msymbol
;
3674 struct symbol
*sym
, *prev
;
3676 if (objfile
->msymbols
== 0) /* Beware the null file. */
3679 for (msymbol
= objfile
-> msymbols
; SYMBOL_NAME (msymbol
) != NULL
; msymbol
++)
3685 /* Get the hash index and check all the symbols
3686 under that hash index. */
3688 hash
= hashname (SYMBOL_NAME (msymbol
));
3690 for (sym
= global_sym_chain
[hash
]; sym
;)
3692 if (SYMBOL_NAME (msymbol
)[0] == SYMBOL_NAME (sym
)[0] &&
3693 STREQ(SYMBOL_NAME (msymbol
) + 1, SYMBOL_NAME (sym
) + 1))
3695 /* Splice this symbol out of the hash chain and
3696 assign the value we have to it. */
3699 SYMBOL_VALUE_CHAIN (prev
) = SYMBOL_VALUE_CHAIN (sym
);
3703 global_sym_chain
[hash
] = SYMBOL_VALUE_CHAIN (sym
);
3706 /* Check to see whether we need to fix up a common block. */
3707 /* Note: this code might be executed several times for
3708 the same symbol if there are multiple references. */
3710 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3712 fix_common_block (sym
, SYMBOL_VALUE_ADDRESS (msymbol
));
3716 SYMBOL_VALUE_ADDRESS (sym
) = SYMBOL_VALUE_ADDRESS (msymbol
);
3721 sym
= SYMBOL_VALUE_CHAIN (prev
);
3725 sym
= global_sym_chain
[hash
];
3731 sym
= SYMBOL_VALUE_CHAIN (sym
);
3737 /* Initialize anything that needs initializing when starting to read
3738 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
3746 /* Initialize anything that needs initializing when a completely new
3747 symbol file is specified (not just adding some symbols from another
3748 file, e.g. a shared library). */
3751 stabsread_new_init ()
3753 /* Empty the hash table of global syms looking for values. */
3754 memset (global_sym_chain
, 0, sizeof (global_sym_chain
));
3757 /* Initialize anything that needs initializing at the same time as
3758 start_symtab() is called. */
3762 global_stabs
= NULL
; /* AIX COFF */
3763 /* Leave FILENUM of 0 free for builtin types and this file's types. */
3764 n_this_object_header_files
= 1;
3765 type_vector_length
= 0;
3766 type_vector
= (struct type
**) 0;
3768 /* FIXME: If common_block_name is not already NULL, we should complain(). */
3769 common_block_name
= NULL
;
3772 /* Call after end_symtab() */
3778 free ((char *) type_vector
);
3781 type_vector_length
= 0;
3782 previous_stab_code
= 0;
3786 finish_global_stabs (objfile
)
3787 struct objfile
*objfile
;
3791 patch_block_stabs (global_symbols
, global_stabs
, objfile
);
3792 free ((PTR
) global_stabs
);
3793 global_stabs
= NULL
;
3797 /* Initializer for this module */
3800 _initialize_stabsread ()
3802 undef_types_allocated
= 20;
3803 undef_types_length
= 0;
3804 undef_types
= (struct type
**)
3805 xmalloc (undef_types_allocated
* sizeof (struct type
*));