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)\ 37 struct struct_align_##name { \ 38 char c; \ 39 type x; \ 40 }; \ 41 FFI_EXTERN \ 42 maybe_const ffi_type ffi_type_##name = { \ 43 sizeof(type), \ 44 offsetof(struct struct_align_##name, x), \ 45 id, NULL \ 46 } 47 48 #define FFI_COMPLEX_TYPEDEF(name, type, maybe_const) \ 49 static ffi_type *ffi_elements_complex_##name [2] = { \ 50 (ffi_type *)(&ffi_type_##name), NULL \ 51 }; \ 52 struct struct_align_complex_##name { \ 53 char c; \ 54 _Complex type x; \ 55 }; \ 56 FFI_EXTERN \ 57 maybe_const ffi_type ffi_type_complex_##name = { \ 58 sizeof(_Complex type), \ 59 offsetof(struct struct_align_complex_##name, x), \ 60 FFI_TYPE_COMPLEX, \ 61 (ffi_type **)ffi_elements_complex_##name \ 62 } 63 64 /* Size and alignment are fake here. They must not be 0. */ 65 FFI_EXTERN const ffi_type ffi_type_void = { 66 1, 1, FFI_TYPE_VOID, NULL 67 }; 68 69 FFI_TYPEDEF(uint8, UINT8, FFI_TYPE_UINT8, const); 70 FFI_TYPEDEF(sint8, SINT8, FFI_TYPE_SINT8, const); 71 FFI_TYPEDEF(uint16, UINT16, FFI_TYPE_UINT16, const); 72 FFI_TYPEDEF(sint16, SINT16, FFI_TYPE_SINT16, const); 73 FFI_TYPEDEF(uint32, UINT32, FFI_TYPE_UINT32, const); 74 FFI_TYPEDEF(sint32, SINT32, FFI_TYPE_SINT32, const); 75 FFI_TYPEDEF(uint64, UINT64, FFI_TYPE_UINT64, const); 76 FFI_TYPEDEF(sint64, SINT64, FFI_TYPE_SINT64, const); 77 78 FFI_TYPEDEF(pointer, void*, FFI_TYPE_POINTER, const); 79 80 FFI_TYPEDEF(float, float, FFI_TYPE_FLOAT, const); 81 FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE, const); 82 83 #if !defined HAVE_LONG_DOUBLE_VARIANT || defined __alpha__ 84 #define FFI_LDBL_CONST const 85 #else 86 #define FFI_LDBL_CONST 87 #endif 88 89 #ifdef __alpha__ 90 /* Even if we're not configured to default to 128-bit long double, 91 maintain binary compatibility, as -mlong-double-128 can be used 92 at any time. */ 93 /* Validate the hard-coded number below. */ 94 # if defined(__LONG_DOUBLE_128__) && FFI_TYPE_LONGDOUBLE != 4 95 # error FFI_TYPE_LONGDOUBLE out of date 96 # endif 97 const ffi_type ffi_type_longdouble = { 16, 16, 4, NULL }; 98 #elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE 99 FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE, FFI_LDBL_CONST); 100 #endif 101 102 #ifdef FFI_TARGET_HAS_COMPLEX_TYPE 103 FFI_COMPLEX_TYPEDEF(float, float, const); 104 FFI_COMPLEX_TYPEDEF(double, double, const); 105 #if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE 106 FFI_COMPLEX_TYPEDEF(longdouble, long double, FFI_LDBL_CONST); 107 #endif 108 #endif 109