types.c   [plain text]

/* -----------------------------------------------------------------------
   types.c - Copyright (c) 1996, 1998  Red Hat, Inc.
   
   Predefined ffi_types needed by libffi.

   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the
   ``Software''), to deal in the Software without restriction, including
   without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense, and/or sell copies of the Software, and to
   permit persons to whom the Software is furnished to do so, subject to
   the following conditions:

   The above copyright notice and this permission notice shall be included
   in all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   OTHER DEALINGS IN THE SOFTWARE.
   ----------------------------------------------------------------------- */

#include <ffi.h>
#include <ffi_common.h>

/* Type definitions */

#define FFI_TYPEDEF(name, type, id)		\
struct struct_align_##name {			\
  char c;					\
  type x;					\
};						\
ffi_type ffi_type_##name = {			\
  sizeof(type),					\
  offsetof(struct struct_align_##name, x),	\
  id, NULL					\
}

/* Size and alignment are fake here. They must not be 0. */
ffi_type ffi_type_void = {
  1, 1, FFI_TYPE_VOID, NULL
};

FFI_TYPEDEF(uint8, UINT8, FFI_TYPE_UINT8);
FFI_TYPEDEF(sint8, SINT8, FFI_TYPE_SINT8);
FFI_TYPEDEF(uint16, UINT16, FFI_TYPE_UINT16);
FFI_TYPEDEF(sint16, SINT16, FFI_TYPE_SINT16);
FFI_TYPEDEF(uint32, UINT32, FFI_TYPE_UINT32);
FFI_TYPEDEF(sint32, SINT32, FFI_TYPE_SINT32);
FFI_TYPEDEF(uint64, UINT64, FFI_TYPE_UINT64);
FFI_TYPEDEF(sint64, SINT64, FFI_TYPE_SINT64);

FFI_TYPEDEF(pointer, void*, FFI_TYPE_POINTER);

FFI_TYPEDEF(float, float, FFI_TYPE_FLOAT);
FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE);

#ifdef __alpha__
/* Even if we're not configured to default to 128-bit long double, 
   maintain binary compatibility, as -mlong-double-128 can be used
   at any time.  */
/* Validate the hard-coded number below.  */
# if defined(__LONG_DOUBLE_128__) && FFI_TYPE_LONGDOUBLE != 4
#  error FFI_TYPE_LONGDOUBLE out of date
# endif
# undef ffi_type_longdouble
ffi_type ffi_type_longdouble = { 16, 16, 4, NULL };
#elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE);
#endif