1 /* ----------------------------------------------------------------------- 2 ffi_common.h - Copyright (C) 2011, 2012, 2013 Anthony Green 3 Copyright (C) 2007 Free Software Foundation, Inc 4 Copyright (c) 1996 Red Hat, Inc. 5 6 Common internal definitions and macros. Only necessary for building 7 libffi. 8 ----------------------------------------------------------------------- */ 9 10 #ifndef FFI_COMMON_H 11 #define FFI_COMMON_H 12 13 #ifdef __cplusplus 14 extern "C" { 15 #endif 16 17 #include <fficonfig.h> 18 19 /* Do not move this. Some versions of AIX are very picky about where 20 this is positioned. */ 21 #ifdef __GNUC__ 22 # if HAVE_ALLOCA_H 23 # include <alloca.h> 24 # else 25 /* mingw64 defines this already in malloc.h. */ 26 # ifndef alloca 27 # define alloca __builtin_alloca 28 # endif 29 # endif 30 # define MAYBE_UNUSED __attribute__((__unused__)) 31 #else 32 # define MAYBE_UNUSED 33 # if HAVE_ALLOCA_H 34 # include <alloca.h> 35 # else 36 # ifdef _AIX 37 # pragma alloca 38 # else 39 # ifndef alloca /* predefined by HP cc +Olibcalls */ 40 # ifdef _MSC_VER 41 # define alloca _alloca 42 # else 43 char *alloca (); 44 # endif 45 # endif 46 # endif 47 # endif 48 #endif 49 50 /* Check for the existence of memcpy. */ 51 #if STDC_HEADERS 52 # include <string.h> 53 #else 54 # ifndef HAVE_MEMCPY 55 # define memcpy(d, s, n) bcopy ((s), (d), (n)) 56 # endif 57 #endif 58 59 #if defined(FFI_DEBUG) 60 #include <stdio.h> 61 #endif 62 63 #ifdef FFI_DEBUG 64 void ffi_assert(char *expr, char *file, int line); 65 void ffi_stop_here(void); 66 void ffi_type_test(ffi_type *a, char *file, int line); 67 68 #define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__)) 69 #define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l))) 70 #define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__) 71 #else 72 #define FFI_ASSERT(x) 73 #define FFI_ASSERT_AT(x, f, l) 74 #define FFI_ASSERT_VALID_TYPE(x) 75 #endif 76 77 /* v cast to size_t and aligned up to a multiple of a */ 78 #define FFI_ALIGN(v, a) (((((size_t) (v))-1) | ((a)-1))+1) 79 /* v cast to size_t and aligned down to a multiple of a */ 80 #define FFI_ALIGN_DOWN(v, a) (((size_t) (v)) & -a) 81 82 /* Perform machine dependent cif processing */ 83 ffi_status ffi_prep_cif_machdep(ffi_cif *cif); 84 ffi_status ffi_prep_cif_machdep_var(ffi_cif *cif, 85 unsigned int nfixedargs, unsigned int ntotalargs); 86 87 88 #if HAVE_LONG_DOUBLE_VARIANT 89 /* Used to adjust size/alignment of ffi types. */ 90 void ffi_prep_types (ffi_abi abi); 91 #endif 92 93 /* Used internally, but overridden by some architectures */ 94 ffi_status ffi_prep_cif_core(ffi_cif *cif, 95 ffi_abi abi, 96 unsigned int isvariadic, 97 unsigned int nfixedargs, 98 unsigned int ntotalargs, 99 ffi_type *rtype, 100 ffi_type **atypes); 101 102 /* Translate a data pointer to a code pointer. Needed for closures on 103 some targets. */ 104 void *ffi_data_to_code_pointer (void *data) FFI_HIDDEN; 105 106 /* Extended cif, used in callback from assembly routine */ 107 typedef struct 108 { 109 ffi_cif *cif; 110 void *rvalue; 111 void **avalue; 112 } extended_cif; 113 114 /* Terse sized type definitions. */ 115 #if defined(_MSC_VER) || defined(__sgi) || defined(__SUNPRO_C) 116 typedef unsigned char UINT8; 117 typedef signed char SINT8; 118 typedef unsigned short UINT16; 119 typedef signed short SINT16; 120 typedef unsigned int UINT32; 121 typedef signed int SINT32; 122 # ifdef _MSC_VER 123 typedef unsigned __int64 UINT64; 124 typedef signed __int64 SINT64; 125 # else 126 # include <inttypes.h> 127 typedef uint64_t UINT64; 128 typedef int64_t SINT64; 129 # endif 130 #else 131 typedef unsigned int UINT8 __attribute__((__mode__(__QI__))); 132 typedef signed int SINT8 __attribute__((__mode__(__QI__))); 133 typedef unsigned int UINT16 __attribute__((__mode__(__HI__))); 134 typedef signed int SINT16 __attribute__((__mode__(__HI__))); 135 typedef unsigned int UINT32 __attribute__((__mode__(__SI__))); 136 typedef signed int SINT32 __attribute__((__mode__(__SI__))); 137 typedef unsigned int UINT64 __attribute__((__mode__(__DI__))); 138 typedef signed int SINT64 __attribute__((__mode__(__DI__))); 139 #endif 140 141 typedef float FLOAT32; 142 143 #ifndef __GNUC__ 144 #define __builtin_expect(x, expected_value) (x) 145 #endif 146 #define LIKELY(x) __builtin_expect(!!(x),1) 147 #define UNLIKELY(x) __builtin_expect((x)!=0,0) 148 149 #ifdef __cplusplus 150 } 151 #endif 152 153 #endif 154