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      1 /******************************************************************************
      2  *
      3  * Copyright (C) 2015 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at:
      8  *
      9  * http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  *****************************************************************************
     18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
     19 */
     20 /**
     21 *******************************************************************************
     22 * @file
     23 *  icv_platform_macros.h
     24 *
     25 * @brief
     26 *  This header files contains all the platform/toolchain specific macros
     27 *
     28 * @author
     29 *  Ittiam
     30 *
     31 * @par List of Functions:
     32 *
     33 * @remarks
     34 *  None
     35 *
     36 *******************************************************************************
     37 */
     38 #ifndef __ICV_PLATFORM_MACROS_H__
     39 #define __ICV_PLATFORM_MACROS_H__
     40 
     41 static __inline  UWORD32 CLZ(UWORD32 u4_word)
     42 {
     43     if(u4_word)
     44         return (__builtin_clz(u4_word));
     45     else
     46         return 32;
     47 }
     48 
     49 static __inline  UWORD32 CLZNZ(UWORD32 u4_word)
     50 {
     51     ASSERT(u4_word);
     52     return (__builtin_clz(u4_word));
     53 }
     54 
     55 static __inline WORD32 CLIP_U8(WORD32 x)
     56 {
     57     asm("usat %0, #8, %1" : "=r"(x) : "r"(x));
     58     return x;
     59 }
     60 
     61 static __inline WORD32 CLIP_S8(WORD32 x)
     62 {
     63     asm("ssat %0, #8, %1" : "=r"(x) : "r"(x));
     64     return x;
     65 }
     66 
     67 static __inline WORD32 CLIP_U12(WORD32 x)
     68 {
     69     asm("usat %0, #12, %1" : "=r"(x) : "r"(x));
     70     return x;
     71 }
     72 
     73 static __inline WORD32 CLIP_S12(WORD32 x)
     74 {
     75     asm("ssat %0, #12, %1" : "=r"(x) : "r"(x));
     76     return x;
     77 }
     78 
     79 static __inline WORD32 CLIP_U16(WORD32 x)
     80 {
     81     asm("usat %0, #16, %1" : "=r"(x) : "r"(x));
     82     return x;
     83 }
     84 static __inline WORD32 CLIP_S16(WORD32 x)
     85 {
     86     asm("ssat %0, #16, %1" : "=r"(x) : "r"(x));
     87     return x;
     88 }
     89 
     90 static __inline UWORD32 ITT_BIG_ENDIAN(UWORD32 x)
     91 {
     92     asm("rev %0, %1" : "=r"(x) : "r"(x));
     93     return x;
     94 }
     95 
     96 #define NOP(nop_cnt)    {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++) asm("nop");}
     97 
     98 #define PREFETCH(x) __builtin_prefetch(x);
     99 
    100 #define DATA_SYNC() __sync_synchronize()
    101 
    102 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
    103 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
    104 
    105 #define SHR_NEG(val,shift)  (((shift) > 0) ? ( (val) >> (shift)) : ((val) << (-(shift))))
    106 #define SHL_NEG(val,shift)  (((shift) > 0) ? ( (val) >> (-(shift))) : ((val) << (shift)))
    107 
    108 #define INLINE inline
    109 
    110 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
    111 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
    112 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
    113 
    114 
    115 #endif /* __ICV_PLATFORM_MACROS_H__ */
    116