1/*===---- bmiintrin.h - BMI intrinsics -------------------------------------=== 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to deal 5 * in the Software without restriction, including without limitation the rights 6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 * copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 * THE SOFTWARE. 20 * 21 *===-----------------------------------------------------------------------=== 22 */ 23 24#if !defined __X86INTRIN_H && !defined __IMMINTRIN_H 25#error "Never use <bmiintrin.h> directly; include <x86intrin.h> instead." 26#endif 27 28#ifndef __BMIINTRIN_H 29#define __BMIINTRIN_H 30 31#define _tzcnt_u16(a) (__tzcnt_u16((a))) 32#define _andn_u32(a, b) (__andn_u32((a), (b))) 33/* _bextr_u32 != __bextr_u32 */ 34#define _blsi_u32(a) (__blsi_u32((a))) 35#define _blsmsk_u32(a) (__blsmsk_u32((a))) 36#define _blsr_u32(a) (__blsr_u32((a))) 37#define _tzcnt_u32(a) (__tzcnt_u32((a))) 38 39/* Define the default attributes for the functions in this file. */ 40#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("bmi"))) 41 42/* Allow using the tzcnt intrinsics even for non-BMI targets. Since the TZCNT 43 instruction behaves as BSF on non-BMI targets, there is code that expects 44 to use it as a potentially faster version of BSF. */ 45#define __RELAXED_FN_ATTRS __attribute__((__always_inline__, __nodebug__)) 46 47static __inline__ unsigned short __RELAXED_FN_ATTRS 48__tzcnt_u16(unsigned short __X) 49{ 50 return __X ? __builtin_ctzs(__X) : 16; 51} 52 53static __inline__ unsigned int __DEFAULT_FN_ATTRS 54__andn_u32(unsigned int __X, unsigned int __Y) 55{ 56 return ~__X & __Y; 57} 58 59/* AMD-specified, double-leading-underscore version of BEXTR */ 60static __inline__ unsigned int __DEFAULT_FN_ATTRS 61__bextr_u32(unsigned int __X, unsigned int __Y) 62{ 63 return __builtin_ia32_bextr_u32(__X, __Y); 64} 65 66/* Intel-specified, single-leading-underscore version of BEXTR */ 67static __inline__ unsigned int __DEFAULT_FN_ATTRS 68_bextr_u32(unsigned int __X, unsigned int __Y, unsigned int __Z) 69{ 70 return __builtin_ia32_bextr_u32 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); 71} 72 73static __inline__ unsigned int __DEFAULT_FN_ATTRS 74__blsi_u32(unsigned int __X) 75{ 76 return __X & -__X; 77} 78 79static __inline__ unsigned int __DEFAULT_FN_ATTRS 80__blsmsk_u32(unsigned int __X) 81{ 82 return __X ^ (__X - 1); 83} 84 85static __inline__ unsigned int __DEFAULT_FN_ATTRS 86__blsr_u32(unsigned int __X) 87{ 88 return __X & (__X - 1); 89} 90 91static __inline__ unsigned int __RELAXED_FN_ATTRS 92__tzcnt_u32(unsigned int __X) 93{ 94 return __X ? __builtin_ctz(__X) : 32; 95} 96 97#ifdef __x86_64__ 98 99#define _andn_u64(a, b) (__andn_u64((a), (b))) 100/* _bextr_u64 != __bextr_u64 */ 101#define _blsi_u64(a) (__blsi_u64((a))) 102#define _blsmsk_u64(a) (__blsmsk_u64((a))) 103#define _blsr_u64(a) (__blsr_u64((a))) 104#define _tzcnt_u64(a) (__tzcnt_u64((a))) 105 106static __inline__ unsigned long long __DEFAULT_FN_ATTRS 107__andn_u64 (unsigned long long __X, unsigned long long __Y) 108{ 109 return ~__X & __Y; 110} 111 112/* AMD-specified, double-leading-underscore version of BEXTR */ 113static __inline__ unsigned long long __DEFAULT_FN_ATTRS 114__bextr_u64(unsigned long long __X, unsigned long long __Y) 115{ 116 return __builtin_ia32_bextr_u64(__X, __Y); 117} 118 119/* Intel-specified, single-leading-underscore version of BEXTR */ 120static __inline__ unsigned long long __DEFAULT_FN_ATTRS 121_bextr_u64(unsigned long long __X, unsigned int __Y, unsigned int __Z) 122{ 123 return __builtin_ia32_bextr_u64 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); 124} 125 126static __inline__ unsigned long long __DEFAULT_FN_ATTRS 127__blsi_u64(unsigned long long __X) 128{ 129 return __X & -__X; 130} 131 132static __inline__ unsigned long long __DEFAULT_FN_ATTRS 133__blsmsk_u64(unsigned long long __X) 134{ 135 return __X ^ (__X - 1); 136} 137 138static __inline__ unsigned long long __DEFAULT_FN_ATTRS 139__blsr_u64(unsigned long long __X) 140{ 141 return __X & (__X - 1); 142} 143 144static __inline__ unsigned long long __RELAXED_FN_ATTRS 145__tzcnt_u64(unsigned long long __X) 146{ 147 return __X ? __builtin_ctzll(__X) : 64; 148} 149 150#endif /* __x86_64__ */ 151 152#undef __DEFAULT_FN_ATTRS 153#undef __RELAXED_FN_ATTRS 154 155#endif /* __BMIINTRIN_H */ 156