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更新日期: 2022/06/01 来源: https://gitee.com/weharmony/kernel_liteos_a_note
errno.c
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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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#include "
errno.h
"
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#include "
los_errno.h
"
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#include "
los_task_pri.h
"
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/* the specific errno get or set in interrupt service routine */
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static
int
errno_isr
;
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int
*
__errno_location
(
void
)
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{
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LosTaskCB
*runTask = NULL;
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if
(OS_INT_INACTIVE) {
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runTask =
OsCurrTaskGet
();
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return
&runTask->
errorNo
;
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}
else
{
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return
&
errno_isr
;
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}
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}
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int
*__errno(
void
)
__attribute__
((__weak__, __alias__(
"__errno_location"
)));
__errno_location
int * __errno_location(void)
Definition:
errno.c:39
errno_isr
static int errno_isr
Definition:
errno.c:37
errno.h
__attribute__
__attribute__((aligned(MMU_DESCRIPTOR_L1_SMALL_ENTRY_NUMBERS)))
Definition:
los_arch_mmu.c:98
los_errno.h
OsCurrTaskGet
STATIC INLINE LosTaskCB * OsCurrTaskGet(VOID)
Definition:
los_sched_pri.h:460
los_task_pri.h
TagTaskCB
Definition:
los_sched_pri.h:360
TagTaskCB::errorNo
INT32 errorNo
Definition:
los_sched_pri.h:389
compat
posix
src
errno.c
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