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更新日期: 2022/06/01 来源: https://gitee.com/weharmony/kernel_liteos_a_note
arm_user_get.h
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/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ARM_USER_GET_H
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#define _ARM_USER_GET_H
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#include "
los_typedef.h
"
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#include "securec.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern
"C"
{
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#endif
/* __cplusplus */
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#endif
/* __cplusplus */
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/*********************************************
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此函数用于在复制数据之前验证usermode是否有权访问src。
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函数由汇编实现
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//liteos_a\arch\arm\arm\src\hw_user_get.S
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*********************************************/
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errno_t
_arm_get_user
(
void
*dst,
const
void
*src,
size_t
dstTypeLen,
size_t
srcTypeLen);
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif
/* __cplusplus */
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#endif
/* __cplusplus */
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#endif
/* _ARM_USER_GET_H */
_arm_get_user
errno_t _arm_get_user(void *dst, const void *src, size_t dstTypeLen, size_t srcTypeLen)
los_typedef.h
arch
arm
arm
include
arm_user_get.h
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