Logan Chien | df4f766 | 2019-09-04 16:45:23 -0700 | [diff] [blame] | 1 | /* ===-------- ia32intrin.h ---------------------------------------------------=== |
| 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 | |
| 10 | #ifndef __X86INTRIN_H |
| 11 | #error "Never use <ia32intrin.h> directly; include <x86intrin.h> instead." |
| 12 | #endif |
| 13 | |
| 14 | #ifndef __IA32INTRIN_H |
| 15 | #define __IA32INTRIN_H |
| 16 | |
| 17 | /** Find the first set bit starting from the lsb. Result is undefined if |
| 18 | * input is 0. |
| 19 | * |
| 20 | * \headerfile <x86intrin.h> |
| 21 | * |
| 22 | * This intrinsic corresponds to the <c> BSF </c> instruction or the |
| 23 | * <c> TZCNT </c> instruction. |
| 24 | * |
| 25 | * \param __A |
| 26 | * A 32-bit integer operand. |
| 27 | * \returns A 32-bit integer containing the bit number. |
| 28 | */ |
| 29 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 30 | __bsfd(int __A) { |
| 31 | return __builtin_ctz(__A); |
| 32 | } |
| 33 | |
| 34 | /** Find the first set bit starting from the msb. Result is undefined if |
| 35 | * input is 0. |
| 36 | * |
| 37 | * \headerfile <x86intrin.h> |
| 38 | * |
| 39 | * This intrinsic corresponds to the <c> BSR </c> instruction or the |
| 40 | * <c> LZCNT </c> instruction and an <c> XOR </c>. |
| 41 | * |
| 42 | * \param __A |
| 43 | * A 32-bit integer operand. |
| 44 | * \returns A 32-bit integer containing the bit number. |
| 45 | */ |
| 46 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 47 | __bsrd(int __A) { |
| 48 | return 31 - __builtin_clz(__A); |
| 49 | } |
| 50 | |
| 51 | /** Swaps the bytes in the input. Converting little endian to big endian or |
| 52 | * vice versa. |
| 53 | * |
| 54 | * \headerfile <x86intrin.h> |
| 55 | * |
| 56 | * This intrinsic corresponds to the <c> BSWAP </c> instruction. |
| 57 | * |
| 58 | * \param __A |
| 59 | * A 32-bit integer operand. |
| 60 | * \returns A 32-bit integer containing the swapped bytes. |
| 61 | */ |
| 62 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 63 | __bswapd(int __A) { |
| 64 | return __builtin_bswap32(__A); |
| 65 | } |
| 66 | |
| 67 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 68 | _bswap(int __A) { |
| 69 | return __builtin_bswap32(__A); |
| 70 | } |
| 71 | |
| 72 | #define _bit_scan_forward(A) __bsfd((A)) |
| 73 | #define _bit_scan_reverse(A) __bsrd((A)) |
| 74 | |
| 75 | #ifdef __x86_64__ |
| 76 | /** Find the first set bit starting from the lsb. Result is undefined if |
| 77 | * input is 0. |
| 78 | * |
| 79 | * \headerfile <x86intrin.h> |
| 80 | * |
| 81 | * This intrinsic corresponds to the <c> BSF </c> instruction or the |
| 82 | * <c> TZCNT </c> instruction. |
| 83 | * |
| 84 | * \param __A |
| 85 | * A 64-bit integer operand. |
| 86 | * \returns A 32-bit integer containing the bit number. |
| 87 | */ |
| 88 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 89 | __bsfq(long long __A) { |
| 90 | return __builtin_ctzll(__A); |
| 91 | } |
| 92 | |
| 93 | /** Find the first set bit starting from the msb. Result is undefined if |
| 94 | * input is 0. |
| 95 | * |
| 96 | * \headerfile <x86intrin.h> |
| 97 | * |
| 98 | * This intrinsic corresponds to the <c> BSR </c> instruction or the |
| 99 | * <c> LZCNT </c> instruction and an <c> XOR </c>. |
| 100 | * |
| 101 | * \param __A |
| 102 | * A 64-bit integer operand. |
| 103 | * \returns A 32-bit integer containing the bit number. |
| 104 | */ |
| 105 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 106 | __bsrq(long long __A) { |
| 107 | return 63 - __builtin_clzll(__A); |
| 108 | } |
| 109 | |
| 110 | /** Swaps the bytes in the input. Converting little endian to big endian or |
| 111 | * vice versa. |
| 112 | * |
| 113 | * \headerfile <x86intrin.h> |
| 114 | * |
| 115 | * This intrinsic corresponds to the <c> BSWAP </c> instruction. |
| 116 | * |
| 117 | * \param __A |
| 118 | * A 64-bit integer operand. |
| 119 | * \returns A 64-bit integer containing the swapped bytes. |
| 120 | */ |
| 121 | static __inline__ long long __attribute__((__always_inline__, __nodebug__)) |
| 122 | __bswapq(long long __A) { |
| 123 | return __builtin_bswap64(__A); |
| 124 | } |
| 125 | |
| 126 | #define _bswap64(A) __bswapq((A)) |
| 127 | #endif |
| 128 | |
| 129 | /** Counts the number of bits in the source operand having a value of 1. |
| 130 | * |
| 131 | * \headerfile <x86intrin.h> |
| 132 | * |
| 133 | * This intrinsic corresponds to the <c> POPCNT </c> instruction or a |
| 134 | * a sequence of arithmetic and logic ops to calculate it. |
| 135 | * |
| 136 | * \param __A |
| 137 | * An unsigned 32-bit integer operand. |
| 138 | * \returns A 32-bit integer containing the number of bits with value 1 in the |
| 139 | * source operand. |
| 140 | */ |
| 141 | static __inline__ int __attribute__((__always_inline__, __nodebug__)) |
| 142 | __popcntd(unsigned int __A) |
| 143 | { |
| 144 | return __builtin_popcount(__A); |
| 145 | } |
| 146 | |
| 147 | #define _popcnt32(A) __popcntd((A)) |
| 148 | |
| 149 | #ifdef __x86_64__ |
| 150 | /** Counts the number of bits in the source operand having a value of 1. |
| 151 | * |
| 152 | * \headerfile <x86intrin.h> |
| 153 | * |
| 154 | * This intrinsic corresponds to the <c> POPCNT </c> instruction or a |
| 155 | * a sequence of arithmetic and logic ops to calculate it. |
| 156 | * |
| 157 | * \param __A |
| 158 | * An unsigned 64-bit integer operand. |
| 159 | * \returns A 64-bit integer containing the number of bits with value 1 in the |
| 160 | * source operand. |
| 161 | */ |
| 162 | static __inline__ long long __attribute__((__always_inline__, __nodebug__)) |
| 163 | __popcntq(unsigned long long __A) |
| 164 | { |
| 165 | return __builtin_popcountll(__A); |
| 166 | } |
| 167 | |
| 168 | #define _popcnt64(A) __popcntq((A)) |
| 169 | #endif /* __x86_64__ */ |
| 170 | |
| 171 | #ifdef __x86_64__ |
| 172 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) |
| 173 | __readeflags(void) |
| 174 | { |
| 175 | return __builtin_ia32_readeflags_u64(); |
| 176 | } |
| 177 | |
| 178 | static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| 179 | __writeeflags(unsigned long long __f) |
| 180 | { |
| 181 | __builtin_ia32_writeeflags_u64(__f); |
| 182 | } |
| 183 | |
| 184 | #else /* !__x86_64__ */ |
| 185 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) |
| 186 | __readeflags(void) |
| 187 | { |
| 188 | return __builtin_ia32_readeflags_u32(); |
| 189 | } |
| 190 | |
| 191 | static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| 192 | __writeeflags(unsigned int __f) |
| 193 | { |
| 194 | __builtin_ia32_writeeflags_u32(__f); |
| 195 | } |
| 196 | #endif /* !__x86_64__ */ |
| 197 | |
| 198 | /** Adds the unsigned integer operand to the CRC-32C checksum of the |
| 199 | * unsigned char operand. |
| 200 | * |
| 201 | * \headerfile <x86intrin.h> |
| 202 | * |
| 203 | * This intrinsic corresponds to the <c> CRC32B </c> instruction. |
| 204 | * |
| 205 | * \param __C |
| 206 | * An unsigned integer operand to add to the CRC-32C checksum of operand |
| 207 | * \a __D. |
| 208 | * \param __D |
| 209 | * An unsigned 8-bit integer operand used to compute the CRC-32C checksum. |
| 210 | * \returns The result of adding operand \a __C to the CRC-32C checksum of |
| 211 | * operand \a __D. |
| 212 | */ |
| 213 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__, __target__("sse4.2"))) |
| 214 | __crc32b(unsigned int __C, unsigned char __D) |
| 215 | { |
| 216 | return __builtin_ia32_crc32qi(__C, __D); |
| 217 | } |
| 218 | |
| 219 | /** Adds the unsigned integer operand to the CRC-32C checksum of the |
| 220 | * unsigned short operand. |
| 221 | * |
| 222 | * \headerfile <x86intrin.h> |
| 223 | * |
| 224 | * This intrinsic corresponds to the <c> CRC32W </c> instruction. |
| 225 | * |
| 226 | * \param __C |
| 227 | * An unsigned integer operand to add to the CRC-32C checksum of operand |
| 228 | * \a __D. |
| 229 | * \param __D |
| 230 | * An unsigned 16-bit integer operand used to compute the CRC-32C checksum. |
| 231 | * \returns The result of adding operand \a __C to the CRC-32C checksum of |
| 232 | * operand \a __D. |
| 233 | */ |
| 234 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__, __target__("sse4.2"))) |
| 235 | __crc32w(unsigned int __C, unsigned short __D) |
| 236 | { |
| 237 | return __builtin_ia32_crc32hi(__C, __D); |
| 238 | } |
| 239 | |
| 240 | /** Adds the unsigned integer operand to the CRC-32C checksum of the |
| 241 | * second unsigned integer operand. |
| 242 | * |
| 243 | * \headerfile <x86intrin.h> |
| 244 | * |
| 245 | * This intrinsic corresponds to the <c> CRC32D </c> instruction. |
| 246 | * |
| 247 | * \param __C |
| 248 | * An unsigned integer operand to add to the CRC-32C checksum of operand |
| 249 | * \a __D. |
| 250 | * \param __D |
| 251 | * An unsigned 32-bit integer operand used to compute the CRC-32C checksum. |
| 252 | * \returns The result of adding operand \a __C to the CRC-32C checksum of |
| 253 | * operand \a __D. |
| 254 | */ |
| 255 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__, __target__("sse4.2"))) |
| 256 | __crc32d(unsigned int __C, unsigned int __D) |
| 257 | { |
| 258 | return __builtin_ia32_crc32si(__C, __D); |
| 259 | } |
| 260 | |
| 261 | #ifdef __x86_64__ |
| 262 | /** Adds the unsigned integer operand to the CRC-32C checksum of the |
| 263 | * unsigned 64-bit integer operand. |
| 264 | * |
| 265 | * \headerfile <x86intrin.h> |
| 266 | * |
| 267 | * This intrinsic corresponds to the <c> CRC32Q </c> instruction. |
| 268 | * |
| 269 | * \param __C |
| 270 | * An unsigned integer operand to add to the CRC-32C checksum of operand |
| 271 | * \a __D. |
| 272 | * \param __D |
| 273 | * An unsigned 64-bit integer operand used to compute the CRC-32C checksum. |
| 274 | * \returns The result of adding operand \a __C to the CRC-32C checksum of |
| 275 | * operand \a __D. |
| 276 | */ |
| 277 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__, __target__("sse4.2"))) |
| 278 | __crc32q(unsigned long long __C, unsigned long long __D) |
| 279 | { |
| 280 | return __builtin_ia32_crc32di(__C, __D); |
| 281 | } |
| 282 | #endif /* __x86_64__ */ |
| 283 | |
| 284 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) |
| 285 | __rdpmc(int __A) { |
| 286 | return __builtin_ia32_rdpmc(__A); |
| 287 | } |
| 288 | |
| 289 | /* __rdtscp */ |
| 290 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) |
| 291 | __rdtscp(unsigned int *__A) { |
| 292 | return __builtin_ia32_rdtscp(__A); |
| 293 | } |
| 294 | |
| 295 | #define _rdtsc() __rdtsc() |
| 296 | |
| 297 | #define _rdpmc(A) __rdpmc(A) |
| 298 | |
| 299 | static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| 300 | _wbinvd(void) { |
| 301 | __builtin_ia32_wbinvd(); |
| 302 | } |
| 303 | |
| 304 | static __inline__ unsigned char __attribute__((__always_inline__, __nodebug__)) |
| 305 | __rolb(unsigned char __X, int __C) { |
| 306 | return __builtin_rotateleft8(__X, __C); |
| 307 | } |
| 308 | |
| 309 | static __inline__ unsigned char __attribute__((__always_inline__, __nodebug__)) |
| 310 | __rorb(unsigned char __X, int __C) { |
| 311 | return __builtin_rotateright8(__X, __C); |
| 312 | } |
| 313 | |
| 314 | static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__)) |
| 315 | __rolw(unsigned short __X, int __C) { |
| 316 | return __builtin_rotateleft16(__X, __C); |
| 317 | } |
| 318 | |
| 319 | static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__)) |
| 320 | __rorw(unsigned short __X, int __C) { |
| 321 | return __builtin_rotateright16(__X, __C); |
| 322 | } |
| 323 | |
| 324 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) |
| 325 | __rold(unsigned int __X, int __C) { |
| 326 | return __builtin_rotateleft32(__X, __C); |
| 327 | } |
| 328 | |
| 329 | static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) |
| 330 | __rord(unsigned int __X, int __C) { |
| 331 | return __builtin_rotateright32(__X, __C); |
| 332 | } |
| 333 | |
| 334 | #ifdef __x86_64__ |
| 335 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) |
| 336 | __rolq(unsigned long long __X, int __C) { |
| 337 | return __builtin_rotateleft64(__X, __C); |
| 338 | } |
| 339 | |
| 340 | static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) |
| 341 | __rorq(unsigned long long __X, int __C) { |
| 342 | return __builtin_rotateright64(__X, __C); |
| 343 | } |
| 344 | #endif /* __x86_64__ */ |
| 345 | |
| 346 | #ifndef _MSC_VER |
| 347 | /* These are already provided as builtins for MSVC. */ |
| 348 | /* Select the correct function based on the size of long. */ |
| 349 | #ifdef __LP64__ |
| 350 | #define _lrotl(a,b) __rolq((a), (b)) |
| 351 | #define _lrotr(a,b) __rorq((a), (b)) |
| 352 | #else |
| 353 | #define _lrotl(a,b) __rold((a), (b)) |
| 354 | #define _lrotr(a,b) __rord((a), (b)) |
| 355 | #endif |
| 356 | #define _rotl(a,b) __rold((a), (b)) |
| 357 | #define _rotr(a,b) __rord((a), (b)) |
| 358 | #endif // _MSC_VER |
| 359 | |
| 360 | /* These are not builtins so need to be provided in all modes. */ |
| 361 | #define _rotwl(a,b) __rolw((a), (b)) |
| 362 | #define _rotwr(a,b) __rorw((a), (b)) |
| 363 | |
| 364 | #endif /* __IA32INTRIN_H */ |