[binutils.git] / gdb / gdbtypes.h

/* Internal type definitions for GDB.
   Copyright (C) 1992 Free Software Foundation, Inc.
   Contributed by Cygnus Support, using pieces from other GDB modules.

This file is part of GDB.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#if !defined (GDBTYPES_H)
#define GDBTYPES_H 1

/* When gdb creates fundamental types, it uses one of the following
   type identifiers.  The identifiers are used to index a vector of
   pointers to any types that are created. */

#define FT_VOID			0
#define FT_BOOLEAN		1
#define FT_CHAR			2
#define FT_SIGNED_CHAR		3
#define FT_UNSIGNED_CHAR	4
#define FT_SHORT		5
#define FT_SIGNED_SHORT		6
#define FT_UNSIGNED_SHORT	7
#define FT_INTEGER		8
#define FT_SIGNED_INTEGER	9
#define FT_UNSIGNED_INTEGER	10
#define FT_LONG			11
#define FT_SIGNED_LONG		12
#define FT_UNSIGNED_LONG	13
#define FT_LONG_LONG		14
#define FT_SIGNED_LONG_LONG	15
#define FT_UNSIGNED_LONG_LONG	16
#define FT_FLOAT		17
#define FT_DBL_PREC_FLOAT	18
#define FT_EXT_PREC_FLOAT	19
#define FT_COMPLEX		20
#define FT_DBL_PREC_COMPLEX	21
#define FT_EXT_PREC_COMPLEX	22
#define FT_STRING		23
#define FT_FIXED_DECIMAL	24
#define FT_FLOAT_DECIMAL	25

#define FT_NUM_MEMBERS		26

/* Different kinds of data types are distinguished by the `code' field.  */

enum type_code
{
  TYPE_CODE_UNDEF,		/* Not used; catches errors */
  TYPE_CODE_PTR,		/* Pointer type */
  TYPE_CODE_ARRAY,		/* Array type, lower bound zero */
  TYPE_CODE_STRUCT,		/* C struct or Pascal record */
  TYPE_CODE_UNION,		/* C union or Pascal variant part */
  TYPE_CODE_ENUM,		/* Enumeration type */
  TYPE_CODE_FUNC,		/* Function type */
  TYPE_CODE_INT,		/* Integer type */
  TYPE_CODE_FLT,		/* Floating type */
  TYPE_CODE_VOID,		/* Void type (values zero length) */
  TYPE_CODE_SET,		/* Pascal sets */
  TYPE_CODE_RANGE,		/* Range (integers within spec'd bounds) */
  TYPE_CODE_PASCAL_ARRAY,	/* Array with explicit type of index */
  TYPE_CODE_ERROR,              /* Unknown type */

  /* C++ */
  TYPE_CODE_MEMBER,		/* Member type */
  TYPE_CODE_METHOD,		/* Method type */
  TYPE_CODE_REF,		/* C++ Reference types */

  /* Modula-2 */
  TYPE_CODE_CHAR,		/* *real* character type */
  TYPE_CODE_BOOL		/* Builtin Modula-2 BOOLEAN */
};

/* Some bits for the type's flags word. */

/* Explicitly unsigned integer type */

#define TYPE_FLAG_UNSIGNED	(1 << 0)

/* Explicitly signed integer type */

#define TYPE_FLAG_SIGNED	(1 << 1)

/* This appears in a type's flags word if it is a stub type (eg. if
   someone referenced a type that wasn't defined in a source file
   via (struct sir_not_appearing_in_this_film *)).  */

#define TYPE_FLAG_STUB		(1 << 2)


struct type
{

  /* Code for kind of type */

  enum type_code code;

  /* Name of this type, or NULL if none.
     This is used for printing only, except by poorly designed C++ code.
     Type names specified as input are defined by symbols.  */

  char *name;

  /* Length in bytes of storage for a value of this type */

  unsigned length;

  /* Every type is now associated with a particular objfile, and the
     type is allocated on the type_obstack for that objfile.  One problem
     however, is that there are times when gdb allocates new types while
     it is not in the process of reading symbols from a particular objfile.
     Fortunately, these happen when the type being created is a derived
     type of an existing type, such as in lookup_pointer_type().  So
     we can just allocate the new type using the same objfile as the
     existing type, but to do this we need a backpointer to the objfile
     from the existing type.  Yes this is somewhat ugly, but without
     major overhaul of the internal type system, it can't be avoided
     for now. */

  struct objfile *objfile;

  /* For a pointer type, describes the type of object pointed to.
     For an array type, describes the type of the elements.
     For a function or method type, describes the type of the return value.
     For a range type, describes the type of the full range.
     Unused otherwise.  */

  struct type *target_type;

  /* Type that is a pointer to this type.
     NULL if no such pointer-to type is known yet.
     The debugger may add the address of such a type
     if it has to construct one later.  */ 

  struct type *pointer_type;

  /* C++: also need a reference type.  */

  struct type *reference_type;

  /* Type that is a function returning this type.
     NULL if no such function type is known here.
     The debugger may add the address of such a type
     if it has to construct one later.  */

  struct type *function_type;

  /* Flags about this type.  */

  short flags;

  /* Number of fields described for this type */

  short nfields;

  /* For structure and union types, a description of each field.
     For set and pascal array types, there is one "field",
     whose type is the domain type of the set or array.
     For range types, there are two "fields",
     the minimum and maximum values (both inclusive).
     For enum types, each possible value is described by one "field".

     Using a pointer to a separate array of fields
     allows all types to have the same size, which is useful
     because we can allocate the space for a type before
     we know what to put in it.  */

  struct field
    {

      /* Position of this field, counting in bits from start of
	 containing structure.  For a function type, this is the
	 position in the argument list of this argument.
	 For a range bound or enum value, this is the value itself.
	 For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
	 For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. */

      int bitpos;

      /* Size of this field, in bits, or zero if not packed.
	 For an unpacked field, the field's type's length
	 says how many bytes the field occupies.  */

      int bitsize;

      /* In a struct or enum type, type of this field.
	 In a function type, type of this argument.
	 In an array type, the domain-type of the array.  */

      struct type *type;

      /* Name of field, value or argument.
	 NULL for range bounds and array domains.  */

      char *name;

    } *fields;

  /* For types with virtual functions, VPTR_BASETYPE is the base class which
     defined the virtual function table pointer.  VPTR_FIELDNO is
     the field number of that pointer in the structure.

     For types that are pointer to member types, VPTR_BASETYPE
     is the type that this pointer is a member of.

     Unused otherwise.  */

  struct type *vptr_basetype;

  int vptr_fieldno;

  /* Slot to point to additional language-specific fields of this type.  */

  union type_specific
    {

      /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC.  */

      struct type **arg_types;

      /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  */

      struct cplus_struct_type *cplus_stuff;

    } type_specific;
};

#define	NULL_TYPE ((struct type *) 0)

/* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
   nodes.  */

struct cplus_struct_type
{

  B_TYPE *virtual_field_bits; /* if base class is virtual */

  B_TYPE *private_field_bits;

  B_TYPE *protected_field_bits;

  /* Number of methods described for this type */

  short nfn_fields;

  /* Number of base classes this type derives from. */

  short n_baseclasses;

  /* Number of methods described for this type plus all the
     methods that it derives from.  */

  int nfn_fields_total;

  /* For classes, structures, and unions, a description of each field,
     which consists of an overloaded name, followed by the types of
     arguments that the method expects, and then the name after it
     has been renamed to make it distinct.  */

  struct fn_fieldlist
    {

      /* The overloaded name.  */

      char *name;

      /* The number of methods with this name.  */

      int length;

      /* The list of methods.  */

      struct fn_field
	{

	  /* The return value of the method */

	  struct type *type;

	  /* The argument list */

	  struct type **args;

	  /* The name after it has been processed */

	  char *physname;

	  /* For virtual functions.   */
	  /* First baseclass that defines this virtual function.   */

	  struct type *fcontext;

	  unsigned int is_const : 1;
	  unsigned int is_volatile : 1;
	  unsigned int is_private : 1;
	  unsigned int is_protected : 1;
	  unsigned int is_stub : 1;
	  unsigned int dummy : 3;

	  /* Index into that baseclass's virtual function table,
	     minus 2; else if static: VOFFSET_STATIC; else: 0.  */

	  unsigned voffset : 24;

#	  define VOFFSET_STATIC 1

	} *fn_fields;

    } *fn_fieldlists;

  unsigned char via_protected;

  unsigned char via_public;
};

/* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
   this shared static structure. */

extern const struct cplus_struct_type cplus_struct_default;

extern void
allocate_cplus_struct_type PARAMS ((struct type *));

#define INIT_CPLUS_SPECIFIC(type) \
  (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
#define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
#define HAVE_CPLUS_STRUCT(type) \
  (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)

#define TYPE_NAME(thistype) (thistype)->name
#define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
#define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
#define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
#define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
#define TYPE_LENGTH(thistype) (thistype)->length
#define TYPE_OBJFILE(thistype) (thistype)->objfile
#define TYPE_FLAGS(thistype) (thistype)->flags
#define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
#define TYPE_CODE(thistype) (thistype)->code
#define TYPE_NFIELDS(thistype) (thistype)->nfields
#define TYPE_FIELDS(thistype) (thistype)->fields

/* C++ */

#define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
#define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
#define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
#define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
#define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
#define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
#define	TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
#define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
#define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
#define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
#define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
#define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
#define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
#define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
#define BASETYPE_VIA_VIRTUAL(thistype, index) \
  B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))

#define TYPE_FIELD(thistype, n) (thistype)->fields[n]
#define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
#define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
#define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
#define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
#define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
#define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize

#define TYPE_FIELD_PRIVATE_BITS(thistype) \
  TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
#define TYPE_FIELD_PROTECTED_BITS(thistype) \
  TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
#define TYPE_FIELD_VIRTUAL_BITS(thistype) \
  TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
#define SET_TYPE_FIELD_PRIVATE(thistype, n) \
  B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
#define SET_TYPE_FIELD_PROTECTED(thistype, n) \
  B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
#define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
  B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
#define TYPE_FIELD_PRIVATE(thistype, n) \
  (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
    : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
#define TYPE_FIELD_PROTECTED(thistype, n) \
  (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
    : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
#define TYPE_FIELD_VIRTUAL(thistype, n) \
       B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))

#define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
#define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)

#define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
#define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
#define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
#define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
#define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length

#define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
#define TYPE_FN_FIELD_NAME(thisfn, n) (thisfn)[n].name
#define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
#define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
#define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
#define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
#define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
#define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
#define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
#define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)

extern struct type *builtin_type_void;
extern struct type *builtin_type_char;
extern struct type *builtin_type_short;
extern struct type *builtin_type_int;
extern struct type *builtin_type_long;
extern struct type *builtin_type_signed_char;
extern struct type *builtin_type_unsigned_char;
extern struct type *builtin_type_unsigned_short;
extern struct type *builtin_type_unsigned_int;
extern struct type *builtin_type_unsigned_long;
extern struct type *builtin_type_float;
extern struct type *builtin_type_double;
extern struct type *builtin_type_long_double;
extern struct type *builtin_type_complex;
extern struct type *builtin_type_double_complex;

/* This type represents a type that was unrecognized in symbol
   read-in.  */

extern struct type *builtin_type_error;

extern struct type *builtin_type_long_long;
extern struct type *builtin_type_unsigned_long_long;

/* Modula-2 types */

extern struct type *builtin_type_m2_char;
extern struct type *builtin_type_m2_int;
extern struct type *builtin_type_m2_card;
extern struct type *builtin_type_m2_real;
extern struct type *builtin_type_m2_bool;

/* LONG_LONG is defined if the host has "long long".  */

#ifdef LONG_LONG

#define BUILTIN_TYPE_LONGEST builtin_type_long_long
#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long

#else /* not LONG_LONG.  */

#define BUILTIN_TYPE_LONGEST builtin_type_long
#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long

#endif /* not LONG_LONG.  */

/* 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))

extern struct type *
alloc_type PARAMS ((struct objfile *));

extern struct type *
init_type PARAMS ((enum type_code, int, int, char *, struct objfile *));

extern struct type *
lookup_reference_type PARAMS ((struct type *));

extern struct type *
make_reference_type PARAMS ((struct type *, struct type **));

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 *
make_pointer_type PARAMS ((struct type *, struct type **));

extern struct type *
lookup_pointer_type PARAMS ((struct type *));

extern struct type *
make_function_type PARAMS ((struct type *, 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 *));

#if MAINTENANCE_CMDS
extern void recursive_dump_type PARAMS ((struct type *, int));
#endif

/* printcmd.c */

extern void
print_scalar_formatted PARAMS ((char *, struct type *, int, int, FILE *));

#if MAINTENANCE_CMDS
extern void maintenance_print_type PARAMS ((char *, int));
#endif

#endif	/* GDBTYPES_H */
Commit	Line	Data
1ab3bf1b JG	1	/* Internal type definitions for GDB.
	2	Copyright (C) 1992 Free Software Foundation, Inc.
	3	Contributed by Cygnus Support, using pieces from other GDB modules.
	4
	5	This file is part of GDB.
	6
	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.
	11
	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.
	16
	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. */
	20
	21	#if !defined (GDBTYPES_H)
	22	#define GDBTYPES_H 1
	23
	24	/* When gdb creates fundamental types, it uses one of the following
	25	type identifiers. The identifiers are used to index a vector of
	26	pointers to any types that are created. */
	27
	28	#define FT_VOID 0
	29	#define FT_BOOLEAN 1
	30	#define FT_CHAR 2
	31	#define FT_SIGNED_CHAR 3
	32	#define FT_UNSIGNED_CHAR 4
	33	#define FT_SHORT 5
	34	#define FT_SIGNED_SHORT 6
	35	#define FT_UNSIGNED_SHORT 7
	36	#define FT_INTEGER 8
	37	#define FT_SIGNED_INTEGER 9
	38	#define FT_UNSIGNED_INTEGER 10
	39	#define FT_LONG 11
	40	#define FT_SIGNED_LONG 12
	41	#define FT_UNSIGNED_LONG 13
	42	#define FT_LONG_LONG 14
	43	#define FT_SIGNED_LONG_LONG 15
	44	#define FT_UNSIGNED_LONG_LONG 16
	45	#define FT_FLOAT 17
	46	#define FT_DBL_PREC_FLOAT 18
	47	#define FT_EXT_PREC_FLOAT 19
	48	#define FT_COMPLEX 20
	49	#define FT_DBL_PREC_COMPLEX 21
	50	#define FT_EXT_PREC_COMPLEX 22
	51	#define FT_STRING 23
4a11eef2 FF	52	#define FT_FIXED_DECIMAL 24
4a11eef2 FF	53	#define FT_FLOAT_DECIMAL 25
1ab3bf1b	54
4a11eef2	55	#define FT_NUM_MEMBERS 26
1ab3bf1b JG	56
	57	/* Different kinds of data types are distinguished by the `code' field. */
	58
	59	enum type_code
	60	{
	61	TYPE_CODE_UNDEF, /* Not used; catches errors */
	62	TYPE_CODE_PTR, /* Pointer type */
	63	TYPE_CODE_ARRAY, /* Array type, lower bound zero */
	64	TYPE_CODE_STRUCT, /* C struct or Pascal record */
	65	TYPE_CODE_UNION, /* C union or Pascal variant part */
	66	TYPE_CODE_ENUM, /* Enumeration type */
	67	TYPE_CODE_FUNC, /* Function type */
	68	TYPE_CODE_INT, /* Integer type */
	69	TYPE_CODE_FLT, /* Floating type */
	70	TYPE_CODE_VOID, /* Void type (values zero length) */
	71	TYPE_CODE_SET, /* Pascal sets */
	72	TYPE_CODE_RANGE, /* Range (integers within spec'd bounds) */
	73	TYPE_CODE_PASCAL_ARRAY, /* Array with explicit type of index */
	74	TYPE_CODE_ERROR, /* Unknown type */
	75
	76	/* C++ */
	77	TYPE_CODE_MEMBER, /* Member type */
	78	TYPE_CODE_METHOD, /* Method type */
	79	TYPE_CODE_REF, /* C++ Reference types */
	80
	81	/* Modula-2 */
	82	TYPE_CODE_CHAR, /* real character type */
	83	TYPE_CODE_BOOL /* Builtin Modula-2 BOOLEAN */
	84	};
	85
	86	/* Some bits for the type's flags word. */
	87
	88	/* Explicitly unsigned integer type */
	89
	90	#define TYPE_FLAG_UNSIGNED (1 << 0)
	91
4a11eef2	92	/* Explicitly signed integer type */
1ab3bf1b JG	93
	94	#define TYPE_FLAG_SIGNED (1 << 1)
	95
	96	/* This appears in a type's flags word if it is a stub type (eg. if
	97	someone referenced a type that wasn't defined in a source file
	98	via (struct sir_not_appearing_in_this_film )). /
	99
	100	#define TYPE_FLAG_STUB (1 << 2)
	101
4a11eef2	102
1ab3bf1b JG	103	struct type
	104	{
	105
	106	/* Code for kind of type */
	107
	108	enum type_code code;
	109
	110	/* Name of this type, or NULL if none.
	111	This is used for printing only, except by poorly designed C++ code.
	112	Type names specified as input are defined by symbols. */
	113
	114	char *name;
	115
	116	/* Length in bytes of storage for a value of this type */
	117
	118	unsigned length;
	119
	120	/* Every type is now associated with a particular objfile, and the
	121	type is allocated on the type_obstack for that objfile. One problem
	122	however, is that there are times when gdb allocates new types while
	123	it is not in the process of reading symbols from a particular objfile.
	124	Fortunately, these happen when the type being created is a derived
	125	type of an existing type, such as in lookup_pointer_type(). So
	126	we can just allocate the new type using the same objfile as the
	127	existing type, but to do this we need a backpointer to the objfile
	128	from the existing type. Yes this is somewhat ugly, but without
	129	major overhaul of the internal type system, it can't be avoided
	130	for now. */
	131
	132	struct objfile *objfile;
	133
	134	/* For a pointer type, describes the type of object pointed to.
	135	For an array type, describes the type of the elements.
5c8d3927	136	For a function or method type, describes the type of the return value.
1ab3bf1b JG	137	For a range type, describes the type of the full range.
	138	Unused otherwise. */
	139
	140	struct type *target_type;
	141
	142	/* Type that is a pointer to this type.
	143	NULL if no such pointer-to type is known yet.
	144	The debugger may add the address of such a type
	145	if it has to construct one later. */
	146
	147	struct type *pointer_type;
	148
	149	/* C++: also need a reference type. */
	150
	151	struct type *reference_type;
	152
	153	/* Type that is a function returning this type.
	154	NULL if no such function type is known here.
	155	The debugger may add the address of such a type
	156	if it has to construct one later. */
	157
	158	struct type *function_type;
	159
	160	/* Flags about this type. */
	161
	162	short flags;
	163
	164	/* Number of fields described for this type */
	165
	166	short nfields;
	167
	168	/* For structure and union types, a description of each field.
	169	For set and pascal array types, there is one "field",
	170	whose type is the domain type of the set or array.
	171	For range types, there are two "fields",
	172	the minimum and maximum values (both inclusive).
	173	For enum types, each possible value is described by one "field".
	174
	175	Using a pointer to a separate array of fields
	176	allows all types to have the same size, which is useful
	177	because we can allocate the space for a type before
	178	we know what to put in it. */
	179
	180	struct field
	181	{
	182
	183	/* Position of this field, counting in bits from start of
	184	containing structure. For a function type, this is the
	185	position in the argument list of this argument.
4db8e515 FF	186	For a range bound or enum value, this is the value itself.
	187	For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
	188	For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. */
1ab3bf1b JG	189
	190	int bitpos;
	191
	192	/* Size of this field, in bits, or zero if not packed.
	193	For an unpacked field, the field's type's length
	194	says how many bytes the field occupies. */
	195
	196	int bitsize;
	197
	198	/* In a struct or enum type, type of this field.
	199	In a function type, type of this argument.
	200	In an array type, the domain-type of the array. */
	201
	202	struct type *type;
	203
	204	/* Name of field, value or argument.
	205	NULL for range bounds and array domains. */
	206
	207	char *name;
	208
	209	} *fields;
	210
	211	/* For types with virtual functions, VPTR_BASETYPE is the base class which
	212	defined the virtual function table pointer. VPTR_FIELDNO is
	213	the field number of that pointer in the structure.
	214
	215	For types that are pointer to member types, VPTR_BASETYPE
	216	is the type that this pointer is a member of.
	217
	218	Unused otherwise. */
	219
	220	struct type *vptr_basetype;
	221
	222	int vptr_fieldno;
	223
	224	/* Slot to point to additional language-specific fields of this type. */
	225
	226	union type_specific
	227	{
	228
	229	/* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC. */
	230
	231	struct type **arg_types;
	232
	233	/* CPLUS_STUFF is for TYPE_CODE_STRUCT. */
	234
	235	struct cplus_struct_type *cplus_stuff;
	236
	237	} type_specific;
	238	};
	239
	240	#define NULL_TYPE ((struct type *) 0)
	241
	242	/* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
	243	nodes. */
	244
	245	struct cplus_struct_type
	246	{
	247
	248	B_TYPE virtual_field_bits; / if base class is virtual */
	249
	250	B_TYPE *private_field_bits;
	251
	252	B_TYPE *protected_field_bits;
253
254	/* Number of methods described for this type */
255
256	short nfn_fields;
257
258	/* Number of base classes this type derives from. */
259
260	short n_baseclasses;
261
262	/* Number of methods described for this type plus all the
263	methods that it derives from. */
264
265	int nfn_fields_total;
266
267	/* For classes, structures, and unions, a description of each field,
268	which consists of an overloaded name, followed by the types of
269	arguments that the method expects, and then the name after it
270	has been renamed to make it distinct. */
271
272	struct fn_fieldlist
273	{
274
275	/* The overloaded name. */
276
277	char *name;
278
279	/* The number of methods with this name. */
280
281	int length;
282
283	/* The list of methods. */
284
285	struct fn_field
286	{
287
288	/* The return value of the method */
289
290	struct type *type;
291
292	/* The argument list */
293
294	struct type **args;
295
296	/* The name after it has been processed */
297
298	char *physname;
299
300	/* For virtual functions. */
301	/* First baseclass that defines this virtual function. */
302
303	struct type *fcontext;
304
305	unsigned int is_const : 1;
306	unsigned int is_volatile : 1;
307	unsigned int is_private : 1;
308	unsigned int is_protected : 1;
309	unsigned int is_stub : 1;
310	unsigned int dummy : 3;
311
312	/* Index into that baseclass's virtual function table,
313	minus 2; else if static: VOFFSET_STATIC; else: 0. */
314
315	unsigned voffset : 24;
316
317	# define VOFFSET_STATIC 1
318
319	} *fn_fields;
320
321	} *fn_fieldlists;
322
323	unsigned char via_protected;
324
325	unsigned char via_public;
326	};
327
328	/* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
329	this shared static structure. */
330
331	extern const struct cplus_struct_type cplus_struct_default;
332
333	extern void
334	allocate_cplus_struct_type PARAMS ((struct type *));
335
336	#define INIT_CPLUS_SPECIFIC(type) \
337	(TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
338	#define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
339	#define HAVE_CPLUS_STRUCT(type) \
340	(TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
341
342	#define TYPE_NAME(thistype) (thistype)->name
343	#define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
344	#define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
345	#define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
346	#define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
347	#define TYPE_LENGTH(thistype) (thistype)->length
348	#define TYPE_OBJFILE(thistype) (thistype)->objfile
349	#define TYPE_FLAGS(thistype) (thistype)->flags
350	#define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
351	#define TYPE_CODE(thistype) (thistype)->code
352	#define TYPE_NFIELDS(thistype) (thistype)->nfields
353	#define TYPE_FIELDS(thistype) (thistype)->fields
354
355	/* C++ */
356
357	#define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
358	#define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
359	#define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
360	#define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
361	#define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
362	#define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
363	#define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
364	#define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
365	#define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
366	#define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
367	#define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
368	#define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
369	#define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
370	#define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
371	#define BASETYPE_VIA_VIRTUAL(thistype, index) \
372	B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
373
374	#define TYPE_FIELD(thistype, n) (thistype)->fields[n]
375	#define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
376	#define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
377	#define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
378	#define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
379	#define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
380	#define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
381
382	#define TYPE_FIELD_PRIVATE_BITS(thistype) \
383	TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
384	#define TYPE_FIELD_PROTECTED_BITS(thistype) \
385	TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
386	#define TYPE_FIELD_VIRTUAL_BITS(thistype) \
387	TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
388	#define SET_TYPE_FIELD_PRIVATE(thistype, n) \
389	B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
390	#define SET_TYPE_FIELD_PROTECTED(thistype, n) \
391	B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
392	#define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
393	B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
394	#define TYPE_FIELD_PRIVATE(thistype, n) \
395	(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
396	: B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
397	#define TYPE_FIELD_PROTECTED(thistype, n) \
398	(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
399	: B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
400	#define TYPE_FIELD_VIRTUAL(thistype, n) \
401	B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
402
403	#define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
404	#define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
405
406	#define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
407	#define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
408	#define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
409	#define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
410	#define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
411
412	#define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
413	#define TYPE_FN_FIELD_NAME(thisfn, n) (thisfn)[n].name
414	#define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
415	#define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
416	#define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
417	#define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
418	#define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
419	#define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
420	#define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
421	#define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
422	#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
423	#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
424
425	extern struct type *builtin_type_void;
426	extern struct type *builtin_type_char;
427	extern struct type *builtin_type_short;
428	extern struct type *builtin_type_int;
429	extern struct type *builtin_type_long;
04f27ddc	430	extern struct type *builtin_type_signed_char;
1ab3bf1b JG	431	extern struct type *builtin_type_unsigned_char;
	432	extern struct type *builtin_type_unsigned_short;
	433	extern struct type *builtin_type_unsigned_int;
	434	extern struct type *builtin_type_unsigned_long;
	435	extern struct type *builtin_type_float;
	436	extern struct type *builtin_type_double;
	437	extern struct type *builtin_type_long_double;
	438	extern struct type *builtin_type_complex;
	439	extern struct type *builtin_type_double_complex;
	440
	441	/* This type represents a type that was unrecognized in symbol
	442	read-in. */
	443
	444	extern struct type *builtin_type_error;
	445
	446	extern struct type *builtin_type_long_long;
	447	extern struct type *builtin_type_unsigned_long_long;
	448
	449	/* Modula-2 types */
	450
	451	extern struct type *builtin_type_m2_char;
	452	extern struct type *builtin_type_m2_int;
	453	extern struct type *builtin_type_m2_card;
	454	extern struct type *builtin_type_m2_real;
	455	extern struct type *builtin_type_m2_bool;
	456
	457	/* LONG_LONG is defined if the host has "long long". */
	458
	459	#ifdef LONG_LONG
	460
	461	#define BUILTIN_TYPE_LONGEST builtin_type_long_long
	462	#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
	463
	464	#else /* not LONG_LONG. */
	465
	466	#define BUILTIN_TYPE_LONGEST builtin_type_long
	467	#define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
	468
	469	#endif /* not LONG_LONG. */
	470
	471	/* Maximum and minimum values of built-in types */
	472
	473	#define MAX_OF_TYPE(t) \
	474	TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
	475	: MAX_OF_SIZE(TYPE_LENGTH(t))
	476
	477	#define MIN_OF_TYPE(t) \
	478	TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
	479	: MIN_OF_SIZE(TYPE_LENGTH(t))
	480
	481	extern struct type *
	482	alloc_type PARAMS ((struct objfile *));
	483
	484	extern struct type *
	485	init_type PARAMS ((enum type_code, int, int, char , struct objfile ));
	486
	487	extern struct type *
	488	lookup_reference_type PARAMS ((struct type *));
	489
ea1549b3 JG	490	extern struct type *
	491	make_reference_type PARAMS ((struct type , struct type *));
	492
1ab3bf1b JG	493	extern struct type *
	494	lookup_member_type PARAMS ((struct type , struct type ));
	495
	496	extern void
	497	smash_to_method_type PARAMS ((struct type , struct type , struct type *,
	498	struct type **));
	499
	500	extern void
	501	smash_to_member_type PARAMS ((struct type , struct type , struct type *));
	502
	503	extern struct type *
	504	allocate_stub_method PARAMS ((struct type *));
	505
	506	extern char *
	507	type_name_no_tag PARAMS ((const struct type *));
	508
	509	extern struct type *
	510	lookup_struct_elt_type PARAMS ((struct type , char , int));
	511
ea1549b3 JG	512	extern struct type *
	513	make_pointer_type PARAMS ((struct type , struct type *));
	514
1ab3bf1b JG	515	extern struct type *
	516	lookup_pointer_type PARAMS ((struct type *));
	517
ea1549b3 JG	518	extern struct type *
	519	make_function_type PARAMS ((struct type , struct type *));
	520
1ab3bf1b JG	521	extern struct type *
	522	lookup_function_type PARAMS ((struct type *));
	523
	524	extern struct type *
	525	create_array_type PARAMS ((struct type *, int));
	526
	527	extern struct type *
	528	lookup_unsigned_typename PARAMS ((char *));
	529
	530	extern void
	531	check_stub_type PARAMS ((struct type *));
	532
	533	extern void
	534	check_stub_method PARAMS ((struct type *, int, int));
	535
	536	extern struct type *
	537	lookup_primitive_typename PARAMS ((char *));
	538
	539	extern char *
	540	gdb_mangle_name PARAMS ((struct type *, int, int));
	541
	542	extern struct type *
	543	builtin_type PARAMS ((char **));
	544
	545	extern struct type *
	546	error_type PARAMS ((char **));
	547
	548	extern struct type *
	549	lookup_typename PARAMS ((char , struct block , int));
	550
	551	extern struct type *
	552	lookup_template_type PARAMS ((char , struct type , struct block *));
	553
	554	extern struct type *
	555	lookup_fundamental_type PARAMS ((struct objfile *, int));
	556
be772100 JG	557	extern void
	558	fill_in_vptr_fieldno PARAMS ((struct type *));
	559
0239d9b3 FF	560	#if MAINTENANCE_CMDS
	561	extern void recursive_dump_type PARAMS ((struct type *, int));
	562	#endif
	563
1ab3bf1b JG	564	/* printcmd.c */
	565
	566	extern void
	567	print_scalar_formatted PARAMS ((char , struct type , int, int, FILE *));
	568
0239d9b3 FF	569	#if MAINTENANCE_CMDS
	570	extern void maintenance_print_type PARAMS ((char *, int));
	571	#endif
	572
1ab3bf1b	573	#endif /* GDBTYPES_H */