1 /* 2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /** 33 * @defgroup kernel Kernel 34 * @defgroup los_reg Basic definitions 35 * @ingroup kernel 36 */ 37 38 #ifndef _LOS_REG_H 39 #define _LOS_REG_H 40 41 42 #ifdef __cplusplus 43 #if __cplusplus 44 extern "C" { 45 #endif /* __cplusplus */ 46 #endif /* __cplusplus */ 47 48 /** 49 * @ingroup los_base 50 * Read a UINT8 value from addr and store in value. 51 */ 52 #define READ_UINT8(value, addr) ((value) = *((volatile UINT8 *)(addr))) 53 /** 54 * @ingroup los_base 55 * Read a UINT16 value from addr and store in addr. 56 */ 57 #define READ_UINT16(value, addr) ((value) = *((volatile UINT16 *)(addr))) 58 /** 59 * @ingroup los_base 60 * Read a UINT32 value from addr and store in value. 61 */ 62 #define READ_UINT32(value, addr) ((value) = *((volatile UINT32 *)(addr))) 63 /** 64 * @ingroup los_base 65 * Read a UINT64 value from addr and store in value. 66 */ 67 #define READ_UINT64(value, addr) ((value) = *((volatile UINT64 *)(addr))) 68 69 /** 70 * @ingroup los_base 71 * Get a UINT8 value from addr. 72 */ 73 #define GET_UINT8(addr) (*((volatile UINT8 *)(addr))) 74 /** 75 * @ingroup los_base 76 * Get a UINT16 value from addr. 77 */ 78 #define GET_UINT16(addr) (*((volatile UINT16 *)(addr))) 79 /** 80 * @ingroup los_base 81 * Get a UINT32 value from addr. 82 */ 83 #define GET_UINT32(addr) (*((volatile UINT32 *)(addr))) 84 /** 85 * @ingroup los_base 86 * Get a UINT64 value from addr. 87 */ 88 #define GET_UINT64(addr) (*((volatile UINT64 *)(addr))) 89 90 /** 91 * @ingroup los_base 92 * Write a UINT8 value to addr. 93 */ 94 #define WRITE_UINT8(value, addr) (*((volatile UINT8 *)(addr)) = (value)) 95 /** 96 * @ingroup los_base 97 * Write a UINT16 value to addr. 98 */ 99 #define WRITE_UINT16(value, addr) (*((volatile UINT16 *)(addr)) = (value)) 100 /** 101 * @ingroup los_base 102 * Write a UINT32 value to addr. 103 */ 104 #define WRITE_UINT32(value, addr) (*((volatile UINT32 *)(addr)) = (value)) 105 /** 106 * @ingroup los_base 107 * Write a UINT64 addr to addr. 108 */ 109 #define WRITE_UINT64(value, addr) (*((volatile UINT64 *)(addr)) = (value)) 110 111 #ifdef __cplusplus 112 #if __cplusplus 113 } 114 #endif /* __cplusplus */ 115 #endif /* __cplusplus */ 116 117 #endif /* _LOS_REG_H */ 118