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      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 __BMI__
     29 # error "BMI instruction set not enabled"
     30 #endif /* __BMI__ */
     31 
     32 #ifndef __BMIINTRIN_H
     33 #define __BMIINTRIN_H
     34 
     35 #define _tzcnt_u16(a)     (__tzcnt_u16((a)))
     36 #define _andn_u32(a, b)   (__andn_u32((a), (b)))
     37 /* _bextr_u32 != __bextr_u32 */
     38 #define _blsi_u32(a)      (__blsi_u32((a)))
     39 #define _blsmsk_u32(a)    (__blsmsk_u32((a)))
     40 #define _blsr_u32(a)      (__blsr_u32((a)))
     41 #define _tzcnt_u32(a)     (__tzcnt_u32((a)))
     42 
     43 static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__))
     44 __tzcnt_u16(unsigned short __X)
     45 {
     46   return __builtin_ctzs(__X);
     47 }
     48 
     49 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     50 __andn_u32(unsigned int __X, unsigned int __Y)
     51 {
     52   return ~__X & __Y;
     53 }
     54 
     55 /* AMD-specified, double-leading-underscore version of BEXTR */
     56 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     57 __bextr_u32(unsigned int __X, unsigned int __Y)
     58 {
     59   return __builtin_ia32_bextr_u32(__X, __Y);
     60 }
     61 
     62 /* Intel-specified, single-leading-underscore version of BEXTR */
     63 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     64 _bextr_u32(unsigned int __X, unsigned int __Y, unsigned int __Z)
     65 {
     66   return __builtin_ia32_bextr_u32 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8)));
     67 }
     68 
     69 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     70 __blsi_u32(unsigned int __X)
     71 {
     72   return __X & -__X;
     73 }
     74 
     75 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     76 __blsmsk_u32(unsigned int __X)
     77 {
     78   return __X ^ (__X - 1);
     79 }
     80 
     81 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     82 __blsr_u32(unsigned int __X)
     83 {
     84   return __X & (__X - 1);
     85 }
     86 
     87 static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))
     88 __tzcnt_u32(unsigned int __X)
     89 {
     90   return __builtin_ctz(__X);
     91 }
     92 
     93 #ifdef __x86_64__
     94 
     95 #define _andn_u64(a, b)   (__andn_u64((a), (b)))
     96 /* _bextr_u64 != __bextr_u64 */
     97 #define _blsi_u64(a)      (__blsi_u64((a)))
     98 #define _blsmsk_u64(a)    (__blsmsk_u64((a)))
     99 #define _blsr_u64(a)      (__blsr_u64((a)))
    100 #define _tzcnt_u64(a)     (__tzcnt_u64((a)))
    101 
    102 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    103 __andn_u64 (unsigned long long __X, unsigned long long __Y)
    104 {
    105   return ~__X & __Y;
    106 }
    107 
    108 /* AMD-specified, double-leading-underscore version of BEXTR */
    109 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    110 __bextr_u64(unsigned long long __X, unsigned long long __Y)
    111 {
    112   return __builtin_ia32_bextr_u64(__X, __Y);
    113 }
    114 
    115 /* Intel-specified, single-leading-underscore version of BEXTR */
    116 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    117 _bextr_u64(unsigned long long __X, unsigned int __Y, unsigned int __Z)
    118 {
    119   return __builtin_ia32_bextr_u64 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8)));
    120 }
    121 
    122 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    123 __blsi_u64(unsigned long long __X)
    124 {
    125   return __X & -__X;
    126 }
    127 
    128 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    129 __blsmsk_u64(unsigned long long __X)
    130 {
    131   return __X ^ (__X - 1);
    132 }
    133 
    134 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    135 __blsr_u64(unsigned long long __X)
    136 {
    137   return __X & (__X - 1);
    138 }
    139 
    140 static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))
    141 __tzcnt_u64(unsigned long long __X)
    142 {
    143   return __builtin_ctzll(__X);
    144 }
    145 
    146 #endif /* __x86_64__ */
    147 
    148 #endif /* __BMIINTRIN_H */
    149