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4a11eef2eb
and use it to decide when to print the actual type name rather than trying to invent the name of a fundamental type. This clears up the confusion between int/long when they are the same sizes, removes one obstacle to multi-language support (previously valprint.c thought everything was a C type), and allows gdb to support distinctions between explicitly and implicitly signed types when the compiler supports such distinction in the debug output (as does every ANSI compiler I tested except for gcc).
559 lines
18 KiB
C
559 lines
18 KiB
C
/* Internal type definitions for GDB.
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Copyright (C) 1992 Free Software Foundation, Inc.
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Contributed by Cygnus Support, using pieces from other GDB modules.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (GDBTYPES_H)
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#define GDBTYPES_H 1
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/* When gdb creates fundamental types, it uses one of the following
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type identifiers. The identifiers are used to index a vector of
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pointers to any types that are created. */
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#define FT_VOID 0
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#define FT_BOOLEAN 1
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#define FT_CHAR 2
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#define FT_SIGNED_CHAR 3
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#define FT_UNSIGNED_CHAR 4
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#define FT_SHORT 5
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#define FT_SIGNED_SHORT 6
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#define FT_UNSIGNED_SHORT 7
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#define FT_INTEGER 8
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#define FT_SIGNED_INTEGER 9
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#define FT_UNSIGNED_INTEGER 10
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#define FT_LONG 11
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#define FT_SIGNED_LONG 12
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#define FT_UNSIGNED_LONG 13
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#define FT_LONG_LONG 14
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#define FT_SIGNED_LONG_LONG 15
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#define FT_UNSIGNED_LONG_LONG 16
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#define FT_FLOAT 17
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#define FT_DBL_PREC_FLOAT 18
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#define FT_EXT_PREC_FLOAT 19
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#define FT_COMPLEX 20
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#define FT_DBL_PREC_COMPLEX 21
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#define FT_EXT_PREC_COMPLEX 22
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#define FT_STRING 23
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#define FT_FIXED_DECIMAL 24
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#define FT_FLOAT_DECIMAL 25
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#define FT_NUM_MEMBERS 26
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/* Different kinds of data types are distinguished by the `code' field. */
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enum type_code
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{
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TYPE_CODE_UNDEF, /* Not used; catches errors */
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TYPE_CODE_PTR, /* Pointer type */
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TYPE_CODE_ARRAY, /* Array type, lower bound zero */
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TYPE_CODE_STRUCT, /* C struct or Pascal record */
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TYPE_CODE_UNION, /* C union or Pascal variant part */
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TYPE_CODE_ENUM, /* Enumeration type */
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TYPE_CODE_FUNC, /* Function type */
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TYPE_CODE_INT, /* Integer type */
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TYPE_CODE_FLT, /* Floating type */
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TYPE_CODE_VOID, /* Void type (values zero length) */
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TYPE_CODE_SET, /* Pascal sets */
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TYPE_CODE_RANGE, /* Range (integers within spec'd bounds) */
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TYPE_CODE_PASCAL_ARRAY, /* Array with explicit type of index */
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TYPE_CODE_ERROR, /* Unknown type */
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/* C++ */
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TYPE_CODE_MEMBER, /* Member type */
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TYPE_CODE_METHOD, /* Method type */
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TYPE_CODE_REF, /* C++ Reference types */
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/* Modula-2 */
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TYPE_CODE_CHAR, /* *real* character type */
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TYPE_CODE_BOOL /* Builtin Modula-2 BOOLEAN */
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};
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/* Some bits for the type's flags word. */
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/* Explicitly unsigned integer type */
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#define TYPE_FLAG_UNSIGNED (1 << 0)
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/* Explicitly signed integer type */
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#define TYPE_FLAG_SIGNED (1 << 1)
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/* This appears in a type's flags word if it is a stub type (eg. if
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someone referenced a type that wasn't defined in a source file
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via (struct sir_not_appearing_in_this_film *)). */
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#define TYPE_FLAG_STUB (1 << 2)
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/* This type is a fundamental type in the current source language. */
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#define TYPE_FLAG_FUND_TYPE (1 << 3)
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struct type
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{
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/* Code for kind of type */
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enum type_code code;
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/* Name of this type, or NULL if none.
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This is used for printing only, except by poorly designed C++ code.
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Type names specified as input are defined by symbols. */
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char *name;
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/* Length in bytes of storage for a value of this type */
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unsigned length;
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/* Every type is now associated with a particular objfile, and the
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type is allocated on the type_obstack for that objfile. One problem
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however, is that there are times when gdb allocates new types while
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it is not in the process of reading symbols from a particular objfile.
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Fortunately, these happen when the type being created is a derived
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type of an existing type, such as in lookup_pointer_type(). So
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we can just allocate the new type using the same objfile as the
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existing type, but to do this we need a backpointer to the objfile
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from the existing type. Yes this is somewhat ugly, but without
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major overhaul of the internal type system, it can't be avoided
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for now. */
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struct objfile *objfile;
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/* For a pointer type, describes the type of object pointed to.
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For an array type, describes the type of the elements.
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For a function or method type, describes the type of the return value.
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For a range type, describes the type of the full range.
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Unused otherwise. */
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struct type *target_type;
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/* Type that is a pointer to this type.
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NULL if no such pointer-to type is known yet.
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The debugger may add the address of such a type
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if it has to construct one later. */
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struct type *pointer_type;
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/* C++: also need a reference type. */
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struct type *reference_type;
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/* Type that is a function returning this type.
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NULL if no such function type is known here.
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The debugger may add the address of such a type
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if it has to construct one later. */
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struct type *function_type;
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/* Flags about this type. */
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short flags;
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/* Number of fields described for this type */
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short nfields;
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/* For structure and union types, a description of each field.
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For set and pascal array types, there is one "field",
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whose type is the domain type of the set or array.
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For range types, there are two "fields",
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the minimum and maximum values (both inclusive).
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For enum types, each possible value is described by one "field".
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Using a pointer to a separate array of fields
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allows all types to have the same size, which is useful
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because we can allocate the space for a type before
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we know what to put in it. */
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struct field
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{
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/* Position of this field, counting in bits from start of
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containing structure. For a function type, this is the
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position in the argument list of this argument.
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For a range bound or enum value, this is the value itself. */
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int bitpos;
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/* Size of this field, in bits, or zero if not packed.
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For an unpacked field, the field's type's length
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says how many bytes the field occupies. */
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int bitsize;
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/* In a struct or enum type, type of this field.
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In a function type, type of this argument.
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In an array type, the domain-type of the array. */
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struct type *type;
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/* Name of field, value or argument.
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NULL for range bounds and array domains. */
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char *name;
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} *fields;
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/* For types with virtual functions, VPTR_BASETYPE is the base class which
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defined the virtual function table pointer. VPTR_FIELDNO is
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the field number of that pointer in the structure.
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For types that are pointer to member types, VPTR_BASETYPE
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is the type that this pointer is a member of.
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Unused otherwise. */
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struct type *vptr_basetype;
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int vptr_fieldno;
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/* Slot to point to additional language-specific fields of this type. */
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union type_specific
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{
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/* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC. */
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struct type **arg_types;
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/* CPLUS_STUFF is for TYPE_CODE_STRUCT. */
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struct cplus_struct_type *cplus_stuff;
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} type_specific;
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};
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#define NULL_TYPE ((struct type *) 0)
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/* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
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nodes. */
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struct cplus_struct_type
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{
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B_TYPE *virtual_field_bits; /* if base class is virtual */
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B_TYPE *private_field_bits;
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B_TYPE *protected_field_bits;
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/* Number of methods described for this type */
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short nfn_fields;
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/* Number of base classes this type derives from. */
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short n_baseclasses;
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/* Number of methods described for this type plus all the
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methods that it derives from. */
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int nfn_fields_total;
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/* For classes, structures, and unions, a description of each field,
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which consists of an overloaded name, followed by the types of
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arguments that the method expects, and then the name after it
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has been renamed to make it distinct. */
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struct fn_fieldlist
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{
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/* The overloaded name. */
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char *name;
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/* The number of methods with this name. */
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int length;
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/* The list of methods. */
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struct fn_field
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{
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/* The return value of the method */
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struct type *type;
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/* The argument list */
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struct type **args;
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/* The name after it has been processed */
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char *physname;
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/* For virtual functions. */
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/* First baseclass that defines this virtual function. */
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struct type *fcontext;
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unsigned int is_const : 1;
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unsigned int is_volatile : 1;
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unsigned int is_private : 1;
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unsigned int is_protected : 1;
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unsigned int is_stub : 1;
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unsigned int dummy : 3;
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/* Index into that baseclass's virtual function table,
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minus 2; else if static: VOFFSET_STATIC; else: 0. */
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unsigned voffset : 24;
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# define VOFFSET_STATIC 1
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} *fn_fields;
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} *fn_fieldlists;
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unsigned char via_protected;
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unsigned char via_public;
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};
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/* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
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this shared static structure. */
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extern const struct cplus_struct_type cplus_struct_default;
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extern void
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allocate_cplus_struct_type PARAMS ((struct type *));
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#define INIT_CPLUS_SPECIFIC(type) \
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(TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
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#define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
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#define HAVE_CPLUS_STRUCT(type) \
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(TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
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#define TYPE_NAME(thistype) (thistype)->name
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#define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
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#define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
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#define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
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#define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
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#define TYPE_LENGTH(thistype) (thistype)->length
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#define TYPE_OBJFILE(thistype) (thistype)->objfile
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#define TYPE_FLAGS(thistype) (thistype)->flags
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#define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
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#define TYPE_CODE(thistype) (thistype)->code
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#define TYPE_NFIELDS(thistype) (thistype)->nfields
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#define TYPE_FIELDS(thistype) (thistype)->fields
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/* C++ */
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#define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
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#define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
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#define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
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#define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
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#define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
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#define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
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#define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
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#define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
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#define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
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#define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
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#define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
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#define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
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#define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
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#define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
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#define BASETYPE_VIA_VIRTUAL(thistype, index) \
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B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
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#define TYPE_FIELD(thistype, n) (thistype)->fields[n]
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#define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
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#define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
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#define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
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#define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
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#define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
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#define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
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#define TYPE_FIELD_PRIVATE_BITS(thistype) \
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TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
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#define TYPE_FIELD_PROTECTED_BITS(thistype) \
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TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
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#define TYPE_FIELD_VIRTUAL_BITS(thistype) \
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TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
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#define SET_TYPE_FIELD_PRIVATE(thistype, n) \
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B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
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#define SET_TYPE_FIELD_PROTECTED(thistype, n) \
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B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
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#define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
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B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
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#define TYPE_FIELD_PRIVATE(thistype, n) \
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(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
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: B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
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#define TYPE_FIELD_PROTECTED(thistype, n) \
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(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
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: B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
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#define TYPE_FIELD_VIRTUAL(thistype, n) \
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B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
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#define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
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#define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
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#define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
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#define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
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#define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
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#define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
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#define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
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#define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
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#define TYPE_FN_FIELD_NAME(thisfn, n) (thisfn)[n].name
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#define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
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#define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
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#define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
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#define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
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#define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
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#define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
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#define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
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#define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
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#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
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#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
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extern struct type *builtin_type_void;
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extern struct type *builtin_type_char;
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extern struct type *builtin_type_short;
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extern struct type *builtin_type_int;
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extern struct type *builtin_type_long;
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extern struct type *builtin_type_signed_char;
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extern struct type *builtin_type_unsigned_char;
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extern struct type *builtin_type_unsigned_short;
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extern struct type *builtin_type_unsigned_int;
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extern struct type *builtin_type_unsigned_long;
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extern struct type *builtin_type_float;
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extern struct type *builtin_type_double;
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extern struct type *builtin_type_long_double;
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extern struct type *builtin_type_complex;
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extern struct type *builtin_type_double_complex;
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/* This type represents a type that was unrecognized in symbol
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read-in. */
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extern struct type *builtin_type_error;
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extern struct type *builtin_type_long_long;
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extern struct type *builtin_type_unsigned_long_long;
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/* Modula-2 types */
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extern struct type *builtin_type_m2_char;
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extern struct type *builtin_type_m2_int;
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extern struct type *builtin_type_m2_card;
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extern struct type *builtin_type_m2_real;
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extern struct type *builtin_type_m2_bool;
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/* LONG_LONG is defined if the host has "long long". */
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#ifdef LONG_LONG
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#define BUILTIN_TYPE_LONGEST builtin_type_long_long
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#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
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#else /* not LONG_LONG. */
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#define BUILTIN_TYPE_LONGEST builtin_type_long
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#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
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|
|
|
#endif /* not LONG_LONG. */
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|
|
|
/* Maximum and minimum values of built-in types */
|
|
|
|
#define MAX_OF_TYPE(t) \
|
|
TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
|
|
: MAX_OF_SIZE(TYPE_LENGTH(t))
|
|
|
|
#define MIN_OF_TYPE(t) \
|
|
TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
|
|
: MIN_OF_SIZE(TYPE_LENGTH(t))
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|
|
|
extern struct type *
|
|
alloc_type PARAMS ((struct objfile *));
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|
|
|
extern struct type *
|
|
init_type PARAMS ((enum type_code, int, int, char *, struct objfile *));
|
|
|
|
extern struct type *
|
|
lookup_reference_type PARAMS ((struct type *));
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|
|
|
extern struct type *
|
|
lookup_member_type PARAMS ((struct type *, struct type *));
|
|
|
|
extern void
|
|
smash_to_method_type PARAMS ((struct type *, struct type *, struct type *,
|
|
struct type **));
|
|
|
|
extern void
|
|
smash_to_member_type PARAMS ((struct type *, struct type *, struct type *));
|
|
|
|
extern struct type *
|
|
allocate_stub_method PARAMS ((struct type *));
|
|
|
|
extern char *
|
|
type_name_no_tag PARAMS ((const struct type *));
|
|
|
|
extern struct type *
|
|
lookup_struct_elt_type PARAMS ((struct type *, char *, int));
|
|
|
|
extern struct type *
|
|
lookup_pointer_type PARAMS ((struct type *));
|
|
|
|
extern struct type *
|
|
lookup_function_type PARAMS ((struct type *));
|
|
|
|
extern struct type *
|
|
create_array_type PARAMS ((struct type *, int));
|
|
|
|
extern struct type *
|
|
lookup_unsigned_typename PARAMS ((char *));
|
|
|
|
extern void
|
|
check_stub_type PARAMS ((struct type *));
|
|
|
|
extern void
|
|
check_stub_method PARAMS ((struct type *, int, int));
|
|
|
|
extern struct type *
|
|
lookup_primitive_typename PARAMS ((char *));
|
|
|
|
extern char *
|
|
gdb_mangle_name PARAMS ((struct type *, int, int));
|
|
|
|
extern struct type *
|
|
builtin_type PARAMS ((char **));
|
|
|
|
extern struct type *
|
|
error_type PARAMS ((char **));
|
|
|
|
extern struct type *
|
|
lookup_typename PARAMS ((char *, struct block *, int));
|
|
|
|
extern struct type *
|
|
lookup_template_type PARAMS ((char *, struct type *, struct block *));
|
|
|
|
extern struct type *
|
|
lookup_fundamental_type PARAMS ((struct objfile *, int));
|
|
|
|
extern void
|
|
fill_in_vptr_fieldno PARAMS ((struct type *));
|
|
|
|
/* printcmd.c */
|
|
|
|
extern void
|
|
print_scalar_formatted PARAMS ((char *, struct type *, int, int, FILE *));
|
|
|
|
#endif /* GDBTYPES_H */
|