1 //===-- int_lib.h - configuration header for compiler-rt -----------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file is not part of the interface of this library. 10 // 11 // This file defines various standard types, most importantly a number of unions 12 // used to access parts of larger types. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef INT_TYPES_H 17 #define INT_TYPES_H 18 19 #include "int_endianness.h" 20 21 // si_int is defined in Linux sysroot's asm-generic/siginfo.h 22 #ifdef si_int 23 #undef si_int 24 #endif 25 typedef int32_t si_int; 26 typedef uint32_t su_int; 27 #if UINT_MAX == 0xFFFFFFFF 28 #define clzsi __builtin_clz 29 #define ctzsi __builtin_ctz 30 #elif ULONG_MAX == 0xFFFFFFFF 31 #define clzsi __builtin_clzl 32 #define ctzsi __builtin_ctzl 33 #else 34 #error could not determine appropriate clzsi macro for this system 35 #endif 36 37 typedef int64_t di_int; 38 typedef uint64_t du_int; 39 40 typedef union { 41 di_int all; 42 struct { 43 #if _YUGA_LITTLE_ENDIAN 44 su_int low; 45 si_int high; 46 #else 47 si_int high; 48 su_int low; 49 #endif // _YUGA_LITTLE_ENDIAN 50 } s; 51 } dwords; 52 53 typedef union { 54 du_int all; 55 struct { 56 #if _YUGA_LITTLE_ENDIAN 57 su_int low; 58 su_int high; 59 #else 60 su_int high; 61 su_int low; 62 #endif // _YUGA_LITTLE_ENDIAN 63 } s; 64 } udwords; 65 66 #if defined(__LP64__) || defined(__wasm__) || defined(__mips64) || \ 67 defined(__SIZEOF_INT128__) || defined(_WIN64) 68 #define CRT_HAS_128BIT 69 #endif 70 71 // MSVC doesn't have a working 128bit integer type. Users should really compile 72 // compiler-rt with clang, but if they happen to be doing a standalone build for 73 // asan or something else, disable the 128 bit parts so things sort of work. 74 #if defined(_MSC_VER) && !defined(__clang__) 75 #undef CRT_HAS_128BIT 76 #endif 77 78 #ifdef CRT_HAS_128BIT 79 typedef int ti_int __attribute__((mode(TI))); 80 typedef unsigned tu_int __attribute__((mode(TI))); 81 82 typedef union { 83 ti_int all; 84 struct { 85 #if _YUGA_LITTLE_ENDIAN 86 du_int low; 87 di_int high; 88 #else 89 di_int high; 90 du_int low; 91 #endif // _YUGA_LITTLE_ENDIAN 92 } s; 93 } twords; 94 95 typedef union { 96 tu_int all; 97 struct { 98 #if _YUGA_LITTLE_ENDIAN 99 du_int low; 100 du_int high; 101 #else 102 du_int high; 103 du_int low; 104 #endif // _YUGA_LITTLE_ENDIAN 105 } s; 106 } utwords; 107 make_ti(di_int h,di_int l)108 static __inline ti_int make_ti(di_int h, di_int l) { 109 twords r; 110 r.s.high = (du_int)h; 111 r.s.low = (du_int)l; 112 return r.all; 113 } 114 make_tu(du_int h,du_int l)115 static __inline tu_int make_tu(du_int h, du_int l) { 116 utwords r; 117 r.s.high = h; 118 r.s.low = l; 119 return r.all; 120 } 121 122 #endif // CRT_HAS_128BIT 123 124 // FreeBSD's boot environment does not support using floating-point and poisons 125 // the float and double keywords. 126 #if defined(__FreeBSD__) && defined(_STANDALONE) 127 #define CRT_HAS_FLOATING_POINT 0 128 #else 129 #define CRT_HAS_FLOATING_POINT 1 130 #endif 131 132 #if CRT_HAS_FLOATING_POINT 133 typedef union { 134 su_int u; 135 float f; 136 } float_bits; 137 138 typedef union { 139 udwords u; 140 double f; 141 } double_bits; 142 143 typedef struct { 144 #if _YUGA_LITTLE_ENDIAN 145 udwords low; 146 udwords high; 147 #else 148 udwords high; 149 udwords low; 150 #endif // _YUGA_LITTLE_ENDIAN 151 } uqwords; 152 153 // Check if the target supports 80 bit extended precision long doubles. 154 // Notably, on x86 Windows, MSVC only provides a 64-bit long double, but GCC 155 // still makes it 80 bits. Clang will match whatever compiler it is trying to 156 // be compatible with. On 32-bit x86 Android, long double is 64 bits, while on 157 // x86_64 Android, long double is 128 bits. 158 #if (defined(__i386__) || defined(__x86_64__)) && \ 159 !(defined(_MSC_VER) || defined(__ANDROID__)) 160 #define HAS_80_BIT_LONG_DOUBLE 1 161 #elif defined(__m68k__) || defined(__ia64__) 162 #define HAS_80_BIT_LONG_DOUBLE 1 163 #else 164 #define HAS_80_BIT_LONG_DOUBLE 0 165 #endif 166 167 #if HAS_80_BIT_LONG_DOUBLE 168 typedef long double xf_float; 169 typedef union { 170 uqwords u; 171 xf_float f; 172 } xf_bits; 173 #endif 174 175 #ifdef __powerpc64__ 176 // From https://gcc.gnu.org/wiki/Ieee128PowerPC: 177 // PowerPC64 uses the following suffixes: 178 // IFmode: IBM extended double 179 // KFmode: IEEE 128-bit floating point 180 // TFmode: Matches the default for long double. With -mabi=ieeelongdouble, 181 // it is IEEE 128-bit, with -mabi=ibmlongdouble IBM extended double 182 // Since compiler-rt only implements the tf set of libcalls, we use long double 183 // for the tf_float typedef. 184 typedef long double tf_float; 185 #define CRT_LDBL_128BIT 186 #define CRT_HAS_F128 187 #if __LDBL_MANT_DIG__ == 113 && !defined(__LONG_DOUBLE_IBM128__) 188 #define CRT_HAS_IEEE_TF 189 #define CRT_LDBL_IEEE_F128 190 #endif 191 #define TF_C(x) x##L 192 #elif __LDBL_MANT_DIG__ == 113 || \ 193 (__FLT_RADIX__ == 16 && __LDBL_MANT_DIG__ == 28) 194 // Use long double instead of __float128 if it matches the IEEE 128-bit format 195 // or the IBM hexadecimal format. 196 #define CRT_LDBL_128BIT 197 #define CRT_HAS_F128 198 #if __LDBL_MANT_DIG__ == 113 199 #define CRT_HAS_IEEE_TF 200 #define CRT_LDBL_IEEE_F128 201 #endif 202 typedef long double tf_float; 203 #define TF_C(x) x##L 204 #elif defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__) 205 #define CRT_HAS___FLOAT128_KEYWORD 206 #define CRT_HAS_F128 207 // NB: we assume the __float128 type uses IEEE representation. 208 #define CRT_HAS_IEEE_TF 209 typedef __float128 tf_float; 210 #define TF_C(x) x##Q 211 #endif 212 213 #ifdef CRT_HAS_F128 214 typedef union { 215 uqwords u; 216 tf_float f; 217 } tf_bits; 218 #endif 219 220 // __(u)int128_t is currently needed to compile the *tf builtins as we would 221 // otherwise need to manually expand the bit manipulation on two 64-bit value. 222 #if defined(CRT_HAS_128BIT) && defined(CRT_HAS_F128) 223 #define CRT_HAS_TF_MODE 224 #endif 225 226 #if __STDC_VERSION__ >= 199901L 227 typedef float _Complex Fcomplex; 228 typedef double _Complex Dcomplex; 229 typedef long double _Complex Lcomplex; 230 #if defined(CRT_LDBL_128BIT) 231 typedef Lcomplex Qcomplex; 232 #define CRT_HAS_NATIVE_COMPLEX_F128 233 #elif defined(CRT_HAS___FLOAT128_KEYWORD) 234 #if defined(__clang_major__) && __clang_major__ > 10 235 // Clang prior to 11 did not support __float128 _Complex. 236 typedef __float128 _Complex Qcomplex; 237 #define CRT_HAS_NATIVE_COMPLEX_F128 238 #elif defined(__GNUC__) && __GNUC__ >= 7 239 // GCC does not allow __float128 _Complex, but accepts _Float128 _Complex. 240 typedef _Float128 _Complex Qcomplex; 241 #define CRT_HAS_NATIVE_COMPLEX_F128 242 #endif 243 #endif 244 245 #define COMPLEX_REAL(x) __real__(x) 246 #define COMPLEX_IMAGINARY(x) __imag__(x) 247 #else 248 typedef struct { 249 float real, imaginary; 250 } Fcomplex; 251 252 typedef struct { 253 double real, imaginary; 254 } Dcomplex; 255 256 typedef struct { 257 long double real, imaginary; 258 } Lcomplex; 259 260 #define COMPLEX_REAL(x) (x).real 261 #define COMPLEX_IMAGINARY(x) (x).imaginary 262 #endif 263 264 #ifdef CRT_HAS_NATIVE_COMPLEX_F128 265 #define COMPLEXTF_REAL(x) __real__(x) 266 #define COMPLEXTF_IMAGINARY(x) __imag__(x) 267 #elif defined(CRT_HAS_F128) 268 typedef struct { 269 tf_float real, imaginary; 270 } Qcomplex; 271 #define COMPLEXTF_REAL(x) (x).real 272 #define COMPLEXTF_IMAGINARY(x) (x).imaginary 273 #endif 274 275 #endif // CRT_HAS_FLOATING_POINT 276 #endif // INT_TYPES_H 277