1/* -----------------------------------------------------------------------
2   types.c - Copyright (c) 1996, 1998  Red Hat, Inc.
3
4   Predefined ffi_types needed by libffi.
5
6   Permission is hereby granted, free of charge, to any person obtaining
7   a copy of this software and associated documentation files (the
8   ``Software''), to deal in the Software without restriction, including
9   without limitation the rights to use, copy, modify, merge, publish,
10   distribute, sublicense, and/or sell copies of the Software, and to
11   permit persons to whom the Software is furnished to do so, subject to
12   the following conditions:
13
14   The above copyright notice and this permission notice shall be included
15   in all copies or substantial portions of the Software.
16
17   THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
18   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20   NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
21   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24   DEALINGS IN THE SOFTWARE.
25   ----------------------------------------------------------------------- */
26
27/* Hide the basic type definitions from the header file, so that we
28   can redefine them here as "const".  */
29#define LIBFFI_HIDE_BASIC_TYPES
30
31#include <ffi.h>
32#include <ffi_common.h>
33
34/* Type definitions */
35
36#define FFI_TYPEDEF(name, type, id, maybe_const)\
37struct struct_align_##name {			\
38  char c;					\
39  type x;					\
40};						\
41maybe_const ffi_type ffi_type_##name = {	\
42  sizeof(type),					\
43  offsetof(struct struct_align_##name, x),	\
44  id, NULL					\
45}
46
47#define FFI_COMPLEX_TYPEDEF(name, type, maybe_const)	\
48static ffi_type *ffi_elements_complex_##name [2] = {	\
49	(ffi_type *)(&ffi_type_##name), NULL		\
50};							\
51struct struct_align_complex_##name {			\
52  char c;						\
53  _Complex type x;					\
54};							\
55maybe_const ffi_type ffi_type_complex_##name = {	\
56  sizeof(_Complex type),				\
57  offsetof(struct struct_align_complex_##name, x),	\
58  FFI_TYPE_COMPLEX,					\
59  (ffi_type **)ffi_elements_complex_##name		\
60}
61
62/* Size and alignment are fake here. They must not be 0. */
63const ffi_type ffi_type_void = {
64  1, 1, FFI_TYPE_VOID, NULL
65};
66
67FFI_TYPEDEF(uint8, UINT8, FFI_TYPE_UINT8, const);
68FFI_TYPEDEF(sint8, SINT8, FFI_TYPE_SINT8, const);
69FFI_TYPEDEF(uint16, UINT16, FFI_TYPE_UINT16, const);
70FFI_TYPEDEF(sint16, SINT16, FFI_TYPE_SINT16, const);
71FFI_TYPEDEF(uint32, UINT32, FFI_TYPE_UINT32, const);
72FFI_TYPEDEF(sint32, SINT32, FFI_TYPE_SINT32, const);
73FFI_TYPEDEF(uint64, UINT64, FFI_TYPE_UINT64, const);
74FFI_TYPEDEF(sint64, SINT64, FFI_TYPE_SINT64, const);
75
76FFI_TYPEDEF(pointer, void*, FFI_TYPE_POINTER, const);
77
78FFI_TYPEDEF(float, float, FFI_TYPE_FLOAT, const);
79FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE, const);
80
81#if !defined HAVE_LONG_DOUBLE_VARIANT || defined __alpha__
82#define FFI_LDBL_CONST const
83#else
84#define FFI_LDBL_CONST
85#endif
86
87#ifdef __alpha__
88/* Even if we're not configured to default to 128-bit long double,
89   maintain binary compatibility, as -mlong-double-128 can be used
90   at any time.  */
91/* Validate the hard-coded number below.  */
92# if defined(__LONG_DOUBLE_128__) && FFI_TYPE_LONGDOUBLE != 4
93#  error FFI_TYPE_LONGDOUBLE out of date
94# endif
95const ffi_type ffi_type_longdouble = { 16, 16, 4, NULL };
96#elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
97FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE, FFI_LDBL_CONST);
98#endif
99
100#ifdef FFI_TARGET_HAS_COMPLEX_TYPE
101FFI_COMPLEX_TYPEDEF(float, float, const);
102FFI_COMPLEX_TYPEDEF(double, double, const);
103#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
104FFI_COMPLEX_TYPEDEF(longdouble, long double, FFI_LDBL_CONST);
105#endif
106#endif
107