1 /* Support routines for manipulating internal types for GDB.
2 Copyright (C) 1992 Free Software Foundation, Inc.
3 Contributed by Cygnus Support, using pieces from other GDB modules.
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. */
28 #include "expression.h"
33 #include "complaints.h"
35 /* These variables point to the objects
36 representing the predefined C data types. */
38 struct type *builtin_type_void;
39 struct type *builtin_type_char;
40 struct type *builtin_type_short;
41 struct type *builtin_type_int;
42 struct type *builtin_type_long;
43 struct type *builtin_type_long_long;
44 struct type *builtin_type_signed_char;
45 struct type *builtin_type_unsigned_char;
46 struct type *builtin_type_unsigned_short;
47 struct type *builtin_type_unsigned_int;
48 struct type *builtin_type_unsigned_long;
49 struct type *builtin_type_unsigned_long_long;
50 struct type *builtin_type_float;
51 struct type *builtin_type_double;
52 struct type *builtin_type_long_double;
53 struct type *builtin_type_complex;
54 struct type *builtin_type_double_complex;
55 struct type *builtin_type_string;
57 /* Alloc a new type structure and fill it with some defaults. If
58 OBJFILE is non-NULL, then allocate the space for the type structure
59 in that objfile's type_obstack. */
63 struct objfile *objfile;
65 register struct type *type;
67 /* Alloc the structure and start off with all fields zeroed. */
71 type = (struct type *) xmalloc (sizeof (struct type));
75 type = (struct type *) obstack_alloc (&objfile -> type_obstack,
76 sizeof (struct type));
78 memset ((char *) type, 0, sizeof (struct type));
80 /* Initialize the fields that might not be zero. */
82 TYPE_CODE (type) = TYPE_CODE_UNDEF;
83 TYPE_OBJFILE (type) = objfile;
84 TYPE_VPTR_FIELDNO (type) = -1;
89 /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points
90 to a pointer to memory where the pointer type should be stored.
91 If *TYPEPTR is zero, update it to point to the pointer type we return.
92 We allocate new memory if needed. */
95 make_pointer_type (type, typeptr)
97 struct type **typeptr;
99 register struct type *ntype; /* New type */
100 struct objfile *objfile;
102 ntype = TYPE_POINTER_TYPE (type);
106 return ntype; /* Don't care about alloc, and have new type. */
107 else if (*typeptr == 0)
109 *typeptr = ntype; /* Tracking alloc, and we have new type. */
113 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
115 ntype = alloc_type (TYPE_OBJFILE (type));
119 else /* We have storage, but need to reset it. */
122 objfile = TYPE_OBJFILE (ntype);
123 memset ((char *) ntype, 0, sizeof (struct type));
124 TYPE_OBJFILE (ntype) = objfile;
127 TYPE_TARGET_TYPE (ntype) = type;
128 TYPE_POINTER_TYPE (type) = ntype;
130 /* FIXME! Assume the machine has only one representation for pointers! */
132 TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT;
133 TYPE_CODE (ntype) = TYPE_CODE_PTR;
135 /* pointers are unsigned */
136 TYPE_FLAGS (ntype) |= TYPE_FLAG_UNSIGNED;
138 if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */
139 TYPE_POINTER_TYPE (type) = ntype;
144 /* Given a type TYPE, return a type of pointers to that type.
145 May need to construct such a type if this is the first use. */
148 lookup_pointer_type (type)
151 return make_pointer_type (type, (struct type **)0);
154 /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, points
155 to a pointer to memory where the reference type should be stored.
156 If *TYPEPTR is zero, update it to point to the reference type we return.
157 We allocate new memory if needed. */
160 make_reference_type (type, typeptr)
162 struct type **typeptr;
164 register struct type *ntype; /* New type */
165 struct objfile *objfile;
167 ntype = TYPE_REFERENCE_TYPE (type);
171 return ntype; /* Don't care about alloc, and have new type. */
172 else if (*typeptr == 0)
174 *typeptr = ntype; /* Tracking alloc, and we have new type. */
178 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
180 ntype = alloc_type (TYPE_OBJFILE (type));
184 else /* We have storage, but need to reset it. */
187 objfile = TYPE_OBJFILE (ntype);
188 memset ((char *) ntype, 0, sizeof (struct type));
189 TYPE_OBJFILE (ntype) = objfile;
192 TYPE_TARGET_TYPE (ntype) = type;
193 TYPE_REFERENCE_TYPE (type) = ntype;
195 /* FIXME! Assume the machine has only one representation for references,
196 and that it matches the (only) representation for pointers! */
198 TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT;
199 TYPE_CODE (ntype) = TYPE_CODE_REF;
201 if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
202 TYPE_REFERENCE_TYPE (type) = ntype;
207 /* Same as above, but caller doesn't care about memory allocation details. */
210 lookup_reference_type (type)
213 return make_reference_type (type, (struct type **)0);
216 /* Lookup a function type that returns type TYPE. TYPEPTR, if nonzero, points
217 to a pointer to memory where the function type should be stored.
218 If *TYPEPTR is zero, update it to point to the function type we return.
219 We allocate new memory if needed. */
222 make_function_type (type, typeptr)
224 struct type **typeptr;
226 register struct type *ntype; /* New type */
227 struct objfile *objfile;
229 ntype = TYPE_FUNCTION_TYPE (type);
233 return ntype; /* Don't care about alloc, and have new type. */
234 else if (*typeptr == 0)
236 *typeptr = ntype; /* Tracking alloc, and we have new type. */
240 if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */
242 ntype = alloc_type (TYPE_OBJFILE (type));
246 else /* We have storage, but need to reset it. */
249 objfile = TYPE_OBJFILE (ntype);
250 memset ((char *) ntype, 0, sizeof (struct type));
251 TYPE_OBJFILE (ntype) = objfile;
254 TYPE_TARGET_TYPE (ntype) = type;
255 TYPE_FUNCTION_TYPE (type) = ntype;
257 TYPE_LENGTH (ntype) = 1;
258 TYPE_CODE (ntype) = TYPE_CODE_FUNC;
260 if (!TYPE_FUNCTION_TYPE (type)) /* Remember it, if don't have one. */
261 TYPE_FUNCTION_TYPE (type) = ntype;
267 /* Given a type TYPE, return a type of functions that return that type.
268 May need to construct such a type if this is the first use. */
271 lookup_function_type (type)
274 return make_function_type (type, (struct type **)0);
277 /* Implement direct support for MEMBER_TYPE in GNU C++.
278 May need to construct such a type if this is the first use.
279 The TYPE is the type of the member. The DOMAIN is the type
280 of the aggregate that the member belongs to. */
283 lookup_member_type (type, domain)
287 register struct type *mtype;
289 mtype = alloc_type (TYPE_OBJFILE (type));
290 smash_to_member_type (mtype, domain, type);
294 /* Allocate a stub method whose return type is TYPE.
295 This apparently happens for speed of symbol reading, since parsing
296 out the arguments to the method is cpu-intensive, the way we are doing
297 it. So, we will fill in arguments later.
298 This always returns a fresh type. */
301 allocate_stub_method (type)
306 mtype = alloc_type (TYPE_OBJFILE (type));
307 TYPE_TARGET_TYPE (mtype) = type;
308 /* _DOMAIN_TYPE (mtype) = unknown yet */
309 /* _ARG_TYPES (mtype) = unknown yet */
310 TYPE_FLAGS (mtype) = TYPE_FLAG_STUB;
311 TYPE_CODE (mtype) = TYPE_CODE_METHOD;
312 TYPE_LENGTH (mtype) = 1;
316 /* Create a range type using either a blank type supplied in RESULT_TYPE,
317 or creating a new type, inheriting the objfile from INDEX_TYPE.
319 Indices will be of type INDEX_TYPE, and will range from LOW_BOUND to
320 HIGH_BOUND, inclusive.
322 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
323 sure it is TYPE_CODE_UNDEF before we bash it into a range type? */
326 create_range_type (result_type, index_type, low_bound, high_bound)
327 struct type *result_type;
328 struct type *index_type;
332 if (result_type == NULL)
334 result_type = alloc_type (TYPE_OBJFILE (index_type));
336 TYPE_CODE (result_type) = TYPE_CODE_RANGE;
337 TYPE_TARGET_TYPE (result_type) = index_type;
338 TYPE_LENGTH (result_type) = TYPE_LENGTH (index_type);
339 TYPE_NFIELDS (result_type) = 2;
340 TYPE_FIELDS (result_type) = (struct field *)
341 TYPE_ALLOC (result_type, 2 * sizeof (struct field));
342 memset (TYPE_FIELDS (result_type), 0, 2 * sizeof (struct field));
343 TYPE_FIELD_BITPOS (result_type, 0) = low_bound;
344 TYPE_FIELD_BITPOS (result_type, 1) = high_bound;
345 TYPE_FIELD_TYPE (result_type, 0) = builtin_type_int; /* FIXME */
346 TYPE_FIELD_TYPE (result_type, 1) = builtin_type_int; /* FIXME */
348 return (result_type);
352 /* Create an array type using either a blank type supplied in RESULT_TYPE,
353 or creating a new type, inheriting the objfile from RANGE_TYPE.
355 Elements will be of type ELEMENT_TYPE, the indices will be of type
358 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
359 sure it is TYPE_CODE_UNDEF before we bash it into an array type? */
362 create_array_type (result_type, element_type, range_type)
363 struct type *result_type;
364 struct type *element_type;
365 struct type *range_type;
370 if (TYPE_CODE (range_type) != TYPE_CODE_RANGE)
372 /* FIXME: We only handle range types at the moment. Complain and
373 create a dummy range type to use. */
374 warning ("internal error: array index type must be a range type");
375 range_type = lookup_fundamental_type (TYPE_OBJFILE (range_type),
377 range_type = create_range_type ((struct type *) NULL, range_type, 0, 0);
379 if (result_type == NULL)
381 result_type = alloc_type (TYPE_OBJFILE (range_type));
383 TYPE_CODE (result_type) = TYPE_CODE_ARRAY;
384 TYPE_TARGET_TYPE (result_type) = element_type;
385 low_bound = TYPE_FIELD_BITPOS (range_type, 0);
386 high_bound = TYPE_FIELD_BITPOS (range_type, 1);
387 TYPE_LENGTH (result_type) =
388 TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
389 TYPE_NFIELDS (result_type) = 1;
390 TYPE_FIELDS (result_type) =
391 (struct field *) TYPE_ALLOC (result_type, sizeof (struct field));
392 memset (TYPE_FIELDS (result_type), 0, sizeof (struct field));
393 TYPE_FIELD_TYPE (result_type, 0) = range_type;
394 TYPE_VPTR_FIELDNO (result_type) = -1;
396 return (result_type);
399 /* Create a string type using either a blank type supplied in RESULT_TYPE,
400 or creating a new type. String types are similar enough to array of
401 char types that we can use create_array_type to build the basic type
402 and then bash it into a string type.
404 For fixed length strings, the range type contains 0 as the lower
405 bound and the length of the string minus one as the upper bound.
407 FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make
408 sure it is TYPE_CODE_UNDEF before we bash it into a string type? */
411 create_string_type (result_type, range_type)
412 struct type *result_type;
413 struct type *range_type;
415 result_type = create_array_type (result_type, builtin_type_char, range_type);
416 TYPE_CODE (result_type) = TYPE_CODE_STRING;
417 return (result_type);
420 /* Smash TYPE to be a type of members of DOMAIN with type TO_TYPE.
421 A MEMBER is a wierd thing -- it amounts to a typed offset into
422 a struct, e.g. "an int at offset 8". A MEMBER TYPE doesn't
423 include the offset (that's the value of the MEMBER itself), but does
424 include the structure type into which it points (for some reason).
426 When "smashing" the type, we preserve the objfile that the
427 old type pointed to, since we aren't changing where the type is actually
431 smash_to_member_type (type, domain, to_type)
434 struct type *to_type;
436 struct objfile *objfile;
438 objfile = TYPE_OBJFILE (type);
440 memset ((char *) type, 0, sizeof (struct type));
441 TYPE_OBJFILE (type) = objfile;
442 TYPE_TARGET_TYPE (type) = to_type;
443 TYPE_DOMAIN_TYPE (type) = domain;
444 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
445 TYPE_CODE (type) = TYPE_CODE_MEMBER;
448 /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE.
449 METHOD just means `function that gets an extra "this" argument'.
451 When "smashing" the type, we preserve the objfile that the
452 old type pointed to, since we aren't changing where the type is actually
456 smash_to_method_type (type, domain, to_type, args)
459 struct type *to_type;
462 struct objfile *objfile;
464 objfile = TYPE_OBJFILE (type);
466 memset ((char *) type, 0, sizeof (struct type));
467 TYPE_OBJFILE (type) = objfile;
468 TYPE_TARGET_TYPE (type) = to_type;
469 TYPE_DOMAIN_TYPE (type) = domain;
470 TYPE_ARG_TYPES (type) = args;
471 TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */
472 TYPE_CODE (type) = TYPE_CODE_METHOD;
475 /* Return a typename for a struct/union/enum type
476 without the tag qualifier. If the type has a NULL name,
480 type_name_no_tag (type)
481 register const struct type *type;
485 if ((name = TYPE_NAME (type)) != NULL)
487 switch (TYPE_CODE (type))
489 case TYPE_CODE_STRUCT:
490 if(!strncmp (name, "struct ", 7))
495 case TYPE_CODE_UNION:
496 if(!strncmp (name, "union ", 6))
502 if(!strncmp (name, "enum ", 5))
507 default: /* To avoid -Wall warnings */
514 /* Lookup a primitive type named NAME.
515 Return zero if NAME is not a primitive type.*/
518 lookup_primitive_typename (name)
521 struct type ** const *p;
523 for (p = current_language -> la_builtin_type_vector; *p != NULL; p++)
525 if (STREQ ((**p) -> name, name))
533 /* Lookup a typedef or primitive type named NAME,
534 visible in lexical block BLOCK.
535 If NOERR is nonzero, return zero if NAME is not suitably defined. */
538 lookup_typename (name, block, noerr)
543 register struct symbol *sym;
544 register struct type *tmp;
546 sym = lookup_symbol (name, block, VAR_NAMESPACE, 0, (struct symtab **) NULL);
547 if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF)
549 tmp = lookup_primitive_typename (name);
554 else if (!tmp && noerr)
560 error ("No type named %s.", name);
563 return (SYMBOL_TYPE (sym));
567 lookup_unsigned_typename (name)
570 char *uns = alloca (strlen (name) + 10);
572 strcpy (uns, "unsigned ");
573 strcpy (uns + 9, name);
574 return (lookup_typename (uns, (struct block *) NULL, 0));
578 lookup_signed_typename (name)
582 char *uns = alloca (strlen (name) + 8);
584 strcpy (uns, "signed ");
585 strcpy (uns + 7, name);
586 t = lookup_typename (uns, (struct block *) NULL, 1);
587 /* If we don't find "signed FOO" just try again with plain "FOO". */
590 return lookup_typename (name, (struct block *) NULL, 0);
593 /* Lookup a structure type named "struct NAME",
594 visible in lexical block BLOCK. */
597 lookup_struct (name, block)
601 register struct symbol *sym;
603 sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
604 (struct symtab **) NULL);
608 error ("No struct type named %s.", name);
610 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
612 error ("This context has class, union or enum %s, not a struct.", name);
614 return (SYMBOL_TYPE (sym));
617 /* Lookup a union type named "union NAME",
618 visible in lexical block BLOCK. */
621 lookup_union (name, block)
625 register struct symbol *sym;
627 sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
628 (struct symtab **) NULL);
632 error ("No union type named %s.", name);
634 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_UNION)
636 error ("This context has class, struct or enum %s, not a union.", name);
638 return (SYMBOL_TYPE (sym));
641 /* Lookup an enum type named "enum NAME",
642 visible in lexical block BLOCK. */
645 lookup_enum (name, block)
649 register struct symbol *sym;
651 sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0,
652 (struct symtab **) NULL);
655 error ("No enum type named %s.", name);
657 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM)
659 error ("This context has class, struct or union %s, not an enum.", name);
661 return (SYMBOL_TYPE (sym));
664 /* Lookup a template type named "template NAME<TYPE>",
665 visible in lexical block BLOCK. */
668 lookup_template_type (name, type, block)
674 char *nam = (char*) alloca(strlen(name) + strlen(type->name) + 4);
677 strcat (nam, type->name);
678 strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */
680 sym = lookup_symbol (nam, block, VAR_NAMESPACE, 0, (struct symtab **)NULL);
684 error ("No template type named %s.", name);
686 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT)
688 error ("This context has class, union or enum %s, not a struct.", name);
690 return (SYMBOL_TYPE (sym));
693 /* Given a type TYPE, lookup the type of the component of type named NAME.
695 TYPE can be either a struct or union, or a pointer or reference to a struct or
696 union. If it is a pointer or reference, its target type is automatically used.
697 Thus '.' and '->' are interchangable, as specified for the definitions of the
698 expression element types STRUCTOP_STRUCT and STRUCTOP_PTR.
700 If NOERR is nonzero, return zero if NAME is not suitably defined.
701 If NAME is the name of a baseclass type, return that type. */
704 lookup_struct_elt_type (type, name, noerr)
712 if (TYPE_CODE (type) == TYPE_CODE_PTR ||
713 TYPE_CODE (type) == TYPE_CODE_REF)
714 type = TYPE_TARGET_TYPE (type);
716 if (TYPE_CODE (type) != TYPE_CODE_STRUCT &&
717 TYPE_CODE (type) != TYPE_CODE_UNION)
719 target_terminal_ours ();
721 fprintf (stderr, "Type ");
722 type_print (type, "", stderr, -1);
723 error (" is not a structure or union type.");
726 check_stub_type (type);
729 /* FIXME: This change put in by Michael seems incorrect for the case where
730 the structure tag name is the same as the member name. I.E. when doing
731 "ptype bell->bar" for "struct foo { int bar; int foo; } bell;"
733 typename = type_name_no_tag (type);
734 if (typename != NULL && STREQ (typename, name))
738 for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
740 char *t_field_name = TYPE_FIELD_NAME (type, i);
742 if (t_field_name && STREQ (t_field_name, name))
744 return TYPE_FIELD_TYPE (type, i);
748 /* OK, it's not in this class. Recursively check the baseclasses. */
749 for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
753 t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, noerr);
765 target_terminal_ours ();
767 fprintf (stderr, "Type ");
768 type_print (type, "", stderr, -1);
769 fprintf (stderr, " has no component named ");
770 fputs_filtered (name, stderr);
772 return (struct type *)-1; /* For lint */
775 /* This function is really horrible, but to avoid it, there would need
776 to be more filling in of forward references. */
779 fill_in_vptr_fieldno (type)
782 if (TYPE_VPTR_FIELDNO (type) < 0)
786 /* We must start at zero in case the first (and only) baseclass is
787 virtual (and hence we cannot share the table pointer). */
788 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
790 fill_in_vptr_fieldno (TYPE_BASECLASS (type, i));
791 if (TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, i)) >= 0)
793 TYPE_VPTR_FIELDNO (type)
794 = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, i));
795 TYPE_VPTR_BASETYPE (type)
796 = TYPE_VPTR_BASETYPE (TYPE_BASECLASS (type, i));
803 /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989.
805 If this is a stubbed struct (i.e. declared as struct foo *), see if
806 we can find a full definition in some other file. If so, copy this
807 definition, so we can use it in future. If not, set a flag so we
808 don't waste too much time in future. (FIXME, this doesn't seem
811 This used to be coded as a macro, but I don't think it is called
812 often enough to merit such treatment.
815 struct complaint stub_noname_complaint =
816 {"stub type has NULL name", 0, 0};
819 check_stub_type (type)
822 if (TYPE_FLAGS(type) & TYPE_FLAG_STUB)
824 char* name = type_name_no_tag (type);
828 complain (&stub_noname_complaint);
831 sym = lookup_symbol (name, 0, STRUCT_NAMESPACE, 0,
832 (struct symtab **) NULL);
835 memcpy ((char *)type, (char *)SYMBOL_TYPE(sym), sizeof (struct type));
840 /* Ugly hack to convert method stubs into method types.
842 He ain't kiddin'. This demangles the name of the method into a string
843 including argument types, parses out each argument type, generates
844 a string casting a zero to that type, evaluates the string, and stuffs
845 the resulting type into an argtype vector!!! Then it knows the type
846 of the whole function (including argument types for overloading),
847 which info used to be in the stab's but was removed to hack back
848 the space required for them. */
851 check_stub_method (type, i, j)
857 char *mangled_name = gdb_mangle_name (type, i, j);
858 char *demangled_name = cplus_demangle (mangled_name,
859 DMGL_PARAMS | DMGL_ANSI);
860 char *argtypetext, *p;
861 int depth = 0, argcount = 1;
862 struct type **argtypes;
865 if (demangled_name == NULL)
867 error ("Internal: Cannot demangle mangled name `%s'.", mangled_name);
870 /* Now, read in the parameters that define this type. */
871 argtypetext = strchr (demangled_name, '(') + 1;
883 else if (*p == ',' && depth == 0)
891 /* We need two more slots: one for the THIS pointer, and one for the
892 NULL [...] or void [end of arglist]. */
894 argtypes = (struct type **)
895 TYPE_ALLOC (type, (argcount + 2) * sizeof (struct type *));
897 argtypes[0] = lookup_pointer_type (type);
900 if (*p != ')') /* () means no args, skip while */
905 if (depth <= 0 && (*p == ',' || *p == ')'))
908 parse_and_eval_type (argtypetext, p - argtypetext);
926 if (p[-2] != '.') /* Not '...' */
928 argtypes[argcount] = builtin_type_void; /* List terminator */
932 argtypes[argcount] = NULL; /* Ellist terminator */
935 free (demangled_name);
937 f = TYPE_FN_FIELDLIST1 (type, i);
938 TYPE_FN_FIELD_PHYSNAME (f, j) = mangled_name;
940 /* Now update the old "stub" type into a real type. */
941 mtype = TYPE_FN_FIELD_TYPE (f, j);
942 TYPE_DOMAIN_TYPE (mtype) = type;
943 TYPE_ARG_TYPES (mtype) = argtypes;
944 TYPE_FLAGS (mtype) &= ~TYPE_FLAG_STUB;
945 TYPE_FN_FIELD_STUB (f, j) = 0;
948 const struct cplus_struct_type cplus_struct_default;
951 allocate_cplus_struct_type (type)
954 if (!HAVE_CPLUS_STRUCT (type))
956 TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
957 TYPE_ALLOC (type, sizeof (struct cplus_struct_type));
958 *(TYPE_CPLUS_SPECIFIC(type)) = cplus_struct_default;
962 /* Helper function to initialize the standard scalar types.
964 If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy
965 of the string pointed to by name in the type_obstack for that objfile,
966 and initialize the type name to that copy. There are places (mipsread.c
967 in particular, where init_type is called with a NULL value for NAME). */
970 init_type (code, length, flags, name, objfile)
975 struct objfile *objfile;
977 register struct type *type;
979 type = alloc_type (objfile);
980 TYPE_CODE (type) = code;
981 TYPE_LENGTH (type) = length;
982 TYPE_FLAGS (type) |= flags;
983 if ((name != NULL) && (objfile != NULL))
986 obsavestring (name, strlen (name), &objfile -> type_obstack);
990 TYPE_NAME (type) = name;
995 if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION)
997 INIT_CPLUS_SPECIFIC (type);
1002 /* Look up a fundamental type for the specified objfile.
1003 May need to construct such a type if this is the first use.
1005 Some object file formats (ELF, COFF, etc) do not define fundamental
1006 types such as "int" or "double". Others (stabs for example), do
1007 define fundamental types.
1009 For the formats which don't provide fundamental types, gdb can create
1010 such types, using defaults reasonable for the current language and
1011 the current target machine.
1013 NOTE: This routine is obsolescent. Each debugging format reader
1014 should manage it's own fundamental types, either creating them from
1015 suitable defaults or reading them from the debugging information,
1016 whichever is appropriate. The DWARF reader has already been
1017 fixed to do this. Once the other readers are fixed, this routine
1018 will go away. Also note that fundamental types should be managed
1019 on a compilation unit basis in a multi-language environment, not
1020 on a linkage unit basis as is done here. */
1024 lookup_fundamental_type (objfile, typeid)
1025 struct objfile *objfile;
1028 register struct type **typep;
1029 register int nbytes;
1031 if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
1033 error ("internal error - invalid fundamental type id %d", typeid);
1036 /* If this is the first time we need a fundamental type for this objfile
1037 then we need to initialize the vector of type pointers. */
1039 if (objfile -> fundamental_types == NULL)
1041 nbytes = FT_NUM_MEMBERS * sizeof (struct type *);
1042 objfile -> fundamental_types = (struct type **)
1043 obstack_alloc (&objfile -> type_obstack, nbytes);
1044 memset ((char *) objfile -> fundamental_types, 0, nbytes);
1047 /* Look for this particular type in the fundamental type vector. If one is
1048 not found, create and install one appropriate for the current language. */
1050 typep = objfile -> fundamental_types + typeid;
1053 *typep = create_fundamental_type (objfile, typeid);
1059 #if MAINTENANCE_CMDS
1062 print_bit_vector (bits, nbits)
1068 for (bitno = 0; bitno < nbits; bitno++)
1070 if ((bitno % 8) == 0)
1072 puts_filtered (" ");
1074 if (B_TST (bits, bitno))
1076 printf_filtered ("1");
1080 printf_filtered ("0");
1085 /* The args list is a strange beast. It is either terminated by a NULL
1086 pointer for varargs functions, or by a pointer to a TYPE_CODE_VOID
1087 type for normal fixed argcount functions. (FIXME someday)
1088 Also note the first arg should be the "this" pointer, we may not want to
1089 include it since we may get into a infinitely recursive situation. */
1092 print_arg_types (args, spaces)
1098 while (*args != NULL)
1100 recursive_dump_type (*args, spaces + 2);
1101 if ((*args++) -> code == TYPE_CODE_VOID)
1110 dump_fn_fieldlists (type, spaces)
1118 printfi_filtered (spaces, "fn_fieldlists 0x%x\n",
1119 TYPE_FN_FIELDLISTS (type));
1120 for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++)
1122 f = TYPE_FN_FIELDLIST1 (type, method_idx);
1123 printfi_filtered (spaces + 2, "[%d] name '%s' (0x%x) length %d\n",
1125 TYPE_FN_FIELDLIST_NAME (type, method_idx),
1126 TYPE_FN_FIELDLIST_NAME (type, method_idx),
1127 TYPE_FN_FIELDLIST_LENGTH (type, method_idx));
1128 for (overload_idx = 0;
1129 overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx);
1132 printfi_filtered (spaces + 4, "[%d] physname '%s' (0x%x)\n",
1134 TYPE_FN_FIELD_PHYSNAME (f, overload_idx),
1135 TYPE_FN_FIELD_PHYSNAME (f, overload_idx));
1136 printfi_filtered (spaces + 8, "type 0x%x\n",
1137 TYPE_FN_FIELD_TYPE (f, overload_idx));
1138 recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx),
1140 printfi_filtered (spaces + 8, "args 0x%x\n",
1141 TYPE_FN_FIELD_ARGS (f, overload_idx));
1142 print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), spaces);
1143 printfi_filtered (spaces + 8, "fcontext 0x%x\n",
1144 TYPE_FN_FIELD_FCONTEXT (f, overload_idx));
1145 printfi_filtered (spaces + 8, "is_const %d\n",
1146 TYPE_FN_FIELD_CONST (f, overload_idx));
1147 printfi_filtered (spaces + 8, "is_volatile %d\n",
1148 TYPE_FN_FIELD_VOLATILE (f, overload_idx));
1149 printfi_filtered (spaces + 8, "is_private %d\n",
1150 TYPE_FN_FIELD_PRIVATE (f, overload_idx));
1151 printfi_filtered (spaces + 8, "is_protected %d\n",
1152 TYPE_FN_FIELD_PROTECTED (f, overload_idx));
1153 printfi_filtered (spaces + 8, "is_stub %d\n",
1154 TYPE_FN_FIELD_STUB (f, overload_idx));
1155 printfi_filtered (spaces + 8, "voffset %u\n",
1156 TYPE_FN_FIELD_VOFFSET (f, overload_idx));
1162 print_cplus_stuff (type, spaces)
1166 printfi_filtered (spaces, "n_baseclasses %d\n",
1167 TYPE_N_BASECLASSES (type));
1168 printfi_filtered (spaces, "nfn_fields %d\n",
1169 TYPE_NFN_FIELDS (type));
1170 printfi_filtered (spaces, "nfn_fields_total %d\n",
1171 TYPE_NFN_FIELDS_TOTAL (type));
1172 if (TYPE_N_BASECLASSES (type) > 0)
1174 printfi_filtered (spaces, "virtual_field_bits (%d bits at *0x%x)",
1175 TYPE_N_BASECLASSES (type),
1176 TYPE_FIELD_VIRTUAL_BITS (type));
1177 print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type),
1178 TYPE_N_BASECLASSES (type));
1179 puts_filtered ("\n");
1181 if (TYPE_NFIELDS (type) > 0)
1183 if (TYPE_FIELD_PRIVATE_BITS (type) != NULL)
1185 printfi_filtered (spaces, "private_field_bits (%d bits at *0x%x)",
1186 TYPE_NFIELDS (type),
1187 TYPE_FIELD_PRIVATE_BITS (type));
1188 print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type),
1189 TYPE_NFIELDS (type));
1190 puts_filtered ("\n");
1192 if (TYPE_FIELD_PROTECTED_BITS (type) != NULL)
1194 printfi_filtered (spaces, "protected_field_bits (%d bits at *0x%x)",
1195 TYPE_NFIELDS (type),
1196 TYPE_FIELD_PROTECTED_BITS (type));
1197 print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type),
1198 TYPE_NFIELDS (type));
1199 puts_filtered ("\n");
1202 if (TYPE_NFN_FIELDS (type) > 0)
1204 dump_fn_fieldlists (type, spaces);
1209 recursive_dump_type (type, spaces)
1215 printfi_filtered (spaces, "type node 0x%x\n", type);
1216 printfi_filtered (spaces, "name '%s' (0x%x)\n", TYPE_NAME (type),
1217 TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>");
1218 printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type));
1219 switch (TYPE_CODE (type))
1221 case TYPE_CODE_UNDEF:
1222 printf_filtered ("(TYPE_CODE_UNDEF)");
1225 printf_filtered ("(TYPE_CODE_PTR)");
1227 case TYPE_CODE_ARRAY:
1228 printf_filtered ("(TYPE_CODE_ARRAY)");
1230 case TYPE_CODE_STRUCT:
1231 printf_filtered ("(TYPE_CODE_STRUCT)");
1233 case TYPE_CODE_UNION:
1234 printf_filtered ("(TYPE_CODE_UNION)");
1236 case TYPE_CODE_ENUM:
1237 printf_filtered ("(TYPE_CODE_ENUM)");
1239 case TYPE_CODE_FUNC:
1240 printf_filtered ("(TYPE_CODE_FUNC)");
1243 printf_filtered ("(TYPE_CODE_INT)");
1246 printf_filtered ("(TYPE_CODE_FLT)");
1248 case TYPE_CODE_VOID:
1249 printf_filtered ("(TYPE_CODE_VOID)");
1252 printf_filtered ("(TYPE_CODE_SET)");
1254 case TYPE_CODE_RANGE:
1255 printf_filtered ("(TYPE_CODE_RANGE)");
1257 case TYPE_CODE_STRING:
1258 printf_filtered ("(TYPE_CODE_STRING)");
1260 case TYPE_CODE_ERROR:
1261 printf_filtered ("(TYPE_CODE_ERROR)");
1263 case TYPE_CODE_MEMBER:
1264 printf_filtered ("(TYPE_CODE_MEMBER)");
1266 case TYPE_CODE_METHOD:
1267 printf_filtered ("(TYPE_CODE_METHOD)");
1270 printf_filtered ("(TYPE_CODE_REF)");
1272 case TYPE_CODE_CHAR:
1273 printf_filtered ("(TYPE_CODE_CHAR)");
1275 case TYPE_CODE_BOOL:
1276 printf_filtered ("(TYPE_CODE_BOOL)");
1279 printf_filtered ("(UNKNOWN TYPE CODE)");
1282 puts_filtered ("\n");
1283 printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type));
1284 printfi_filtered (spaces, "objfile 0x%x\n", TYPE_OBJFILE (type));
1285 printfi_filtered (spaces, "target_type 0x%x\n", TYPE_TARGET_TYPE (type));
1286 if (TYPE_TARGET_TYPE (type) != NULL)
1288 recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2);
1290 printfi_filtered (spaces, "pointer_type 0x%x\n",
1291 TYPE_POINTER_TYPE (type));
1292 printfi_filtered (spaces, "reference_type 0x%x\n",
1293 TYPE_REFERENCE_TYPE (type));
1294 printfi_filtered (spaces, "function_type 0x%x\n",
1295 TYPE_FUNCTION_TYPE (type));
1296 printfi_filtered (spaces, "flags 0x%x", TYPE_FLAGS (type));
1297 if (TYPE_FLAGS (type) & TYPE_FLAG_UNSIGNED)
1299 puts_filtered (" TYPE_FLAG_UNSIGNED");
1301 if (TYPE_FLAGS (type) & TYPE_FLAG_SIGNED)
1303 puts_filtered (" TYPE_FLAG_SIGNED");
1305 if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
1307 puts_filtered (" TYPE_FLAG_STUB");
1309 puts_filtered ("\n");
1310 printfi_filtered (spaces, "nfields %d 0x%x\n", TYPE_NFIELDS (type),
1311 TYPE_FIELDS (type));
1312 for (idx = 0; idx < TYPE_NFIELDS (type); idx++)
1314 printfi_filtered (spaces + 2,
1315 "[%d] bitpos %d bitsize %d type 0x%x name '%s' (0x%x)\n",
1316 idx, TYPE_FIELD_BITPOS (type, idx),
1317 TYPE_FIELD_BITSIZE (type, idx),
1318 TYPE_FIELD_TYPE (type, idx),
1319 TYPE_FIELD_NAME (type, idx),
1320 TYPE_FIELD_NAME (type, idx) != NULL
1321 ? TYPE_FIELD_NAME (type, idx)
1323 if (TYPE_FIELD_TYPE (type, idx) != NULL)
1325 recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4);
1328 printfi_filtered (spaces, "vptr_basetype 0x%x\n",
1329 TYPE_VPTR_BASETYPE (type));
1330 if (TYPE_VPTR_BASETYPE (type) != NULL)
1332 recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2);
1334 printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type));
1335 switch (TYPE_CODE (type))
1337 case TYPE_CODE_METHOD:
1338 case TYPE_CODE_FUNC:
1339 printfi_filtered (spaces, "arg_types 0x%x\n", TYPE_ARG_TYPES (type));
1340 print_arg_types (TYPE_ARG_TYPES (type), spaces);
1343 case TYPE_CODE_STRUCT:
1344 printfi_filtered (spaces, "cplus_stuff 0x%x\n",
1345 TYPE_CPLUS_SPECIFIC (type));
1346 print_cplus_stuff (type, spaces);
1350 /* We have to pick one of the union types to be able print and test
1351 the value. Pick cplus_struct_type, even though we know it isn't
1352 any particular one. */
1353 printfi_filtered (spaces, "type_specific 0x%x",
1354 TYPE_CPLUS_SPECIFIC (type));
1355 if (TYPE_CPLUS_SPECIFIC (type) != NULL)
1357 printf_filtered (" (unknown data form)");
1359 printf_filtered ("\n");
1365 #endif /* MAINTENANCE_CMDS */
1368 _initialize_gdbtypes ()
1371 init_type (TYPE_CODE_VOID, 1,
1373 "void", (struct objfile *) NULL);
1375 init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
1377 "char", (struct objfile *) NULL);
1378 builtin_type_signed_char =
1379 init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
1381 "signed char", (struct objfile *) NULL);
1382 builtin_type_unsigned_char =
1383 init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
1385 "unsigned char", (struct objfile *) NULL);
1386 builtin_type_short =
1387 init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
1389 "short", (struct objfile *) NULL);
1390 builtin_type_unsigned_short =
1391 init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
1393 "unsigned short", (struct objfile *) NULL);
1395 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1397 "int", (struct objfile *) NULL);
1398 builtin_type_unsigned_int =
1399 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1401 "unsigned int", (struct objfile *) NULL);
1403 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
1405 "long", (struct objfile *) NULL);
1406 builtin_type_unsigned_long =
1407 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
1409 "unsigned long", (struct objfile *) NULL);
1410 builtin_type_long_long =
1411 init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
1413 "long long", (struct objfile *) NULL);
1414 builtin_type_unsigned_long_long =
1415 init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
1417 "unsigned long long", (struct objfile *) NULL);
1418 builtin_type_float =
1419 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
1421 "float", (struct objfile *) NULL);
1422 builtin_type_double =
1423 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
1425 "double", (struct objfile *) NULL);
1426 builtin_type_long_double =
1427 init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
1429 "long double", (struct objfile *) NULL);
1430 builtin_type_complex =
1431 init_type (TYPE_CODE_FLT, TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
1433 "complex", (struct objfile *) NULL);
1434 builtin_type_double_complex =
1435 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
1437 "double complex", (struct objfile *) NULL);
1438 builtin_type_string =
1439 init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
1441 "string", (struct objfile *) NULL);