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      1 /*===---- arm_acle.h - ARM Non-Neon 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 #ifndef __ARM_ACLE_H
     25 #define __ARM_ACLE_H
     26 
     27 #ifndef __ARM_ACLE
     28 #error "ACLE intrinsics support not enabled."
     29 #endif
     30 
     31 #include <stdint.h>
     32 
     33 #if defined(__cplusplus)
     34 extern "C" {
     35 #endif
     36 
     37 /* Miscellaneous data-processing intrinsics */
     38 
     39 static __inline__ uint32_t __attribute__((always_inline, nodebug))
     40   __clz(uint32_t t) {
     41   return __builtin_clz(t);
     42 }
     43 
     44 static __inline__ unsigned long __attribute__((always_inline, nodebug))
     45   __clzl(unsigned long t) {
     46   return __builtin_clzl(t);
     47 }
     48 
     49 static __inline__ uint64_t __attribute__((always_inline, nodebug))
     50   __clzll(uint64_t t) {
     51 #if __SIZEOF_LONG_LONG__ == 8
     52   return __builtin_clzll(t);
     53 #else
     54   return __builtin_clzl(t);
     55 #endif
     56 }
     57 
     58 static __inline__ uint32_t __attribute__((always_inline, nodebug))
     59   __rev(uint32_t t) {
     60   return __builtin_bswap32(t);
     61 }
     62 
     63 static __inline__ unsigned long __attribute__((always_inline, nodebug))
     64   __revl(unsigned long t) {
     65 #if __SIZEOF_LONG__ == 4
     66   return __builtin_bswap32(t);
     67 #else
     68   return __builtin_bswap64(t);
     69 #endif
     70 }
     71 
     72 static __inline__ uint64_t __attribute__((always_inline, nodebug))
     73   __revll(uint64_t t) {
     74   return __builtin_bswap64(t);
     75 }
     76 
     77 
     78 /*
     79  * Saturating intrinsics
     80  *
     81  * FIXME: Change guard to their corrosponding __ARM_FEATURE flag when Q flag
     82  * intrinsics are implemented and the flag is enabled.
     83  */
     84 #if __ARM_32BIT_STATE
     85 #define __ssat(x, y) __builtin_arm_ssat(x, y)
     86 #define __usat(x, y) __builtin_arm_usat(x, y)
     87 
     88 static __inline__ int32_t __attribute__((always_inline, nodebug))
     89   __qadd(int32_t t, int32_t v) {
     90   return __builtin_arm_qadd(t, v);
     91 }
     92 
     93 static __inline__ int32_t __attribute__((always_inline, nodebug))
     94   __qsub(int32_t t, int32_t v) {
     95   return __builtin_arm_qsub(t, v);
     96 }
     97 
     98 static __inline__ int32_t __attribute__((always_inline, nodebug))
     99 __qdbl(int32_t t) {
    100   return __builtin_arm_qadd(t, t);
    101 }
    102 #endif
    103 
    104 /* CRC32 intrinsics */
    105 #if __ARM_FEATURE_CRC32
    106 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    107   __crc32b(uint32_t a, uint8_t b) {
    108   return __builtin_arm_crc32b(a, b);
    109 }
    110 
    111 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    112   __crc32h(uint32_t a, uint16_t b) {
    113   return __builtin_arm_crc32h(a, b);
    114 }
    115 
    116 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    117   __crc32w(uint32_t a, uint32_t b) {
    118   return __builtin_arm_crc32w(a, b);
    119 }
    120 
    121 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    122   __crc32d(uint32_t a, uint64_t b) {
    123   return __builtin_arm_crc32d(a, b);
    124 }
    125 
    126 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    127   __crc32cb(uint32_t a, uint8_t b) {
    128   return __builtin_arm_crc32cb(a, b);
    129 }
    130 
    131 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    132   __crc32ch(uint32_t a, uint16_t b) {
    133   return __builtin_arm_crc32ch(a, b);
    134 }
    135 
    136 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    137   __crc32cw(uint32_t a, uint32_t b) {
    138   return __builtin_arm_crc32cw(a, b);
    139 }
    140 
    141 static __inline__ uint32_t __attribute__((always_inline, nodebug))
    142   __crc32cd(uint32_t a, uint64_t b) {
    143   return __builtin_arm_crc32cd(a, b);
    144 }
    145 #endif
    146 
    147 #if defined(__cplusplus)
    148 }
    149 #endif
    150 
    151 #endif /* __ARM_ACLE_H */
    152