mirror of https://github.com/ARMmbed/mbed-os.git
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* Copyright (c) 2013-2016 ARM Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* -----------------------------------------------------------------------------
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*
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* Project: CMSIS-RTOS RTX
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* Title: OS Event Observer
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*
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* -----------------------------------------------------------------------------
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*/
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#include "rt_OsEventObserver.h"
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/*
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* _____ _____ ____ __ _____
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* | ___|_ _\ \/ / \/ | ____|
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* | |_ | | \ /| |\/| | _|
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* | _| | | / \| | | | |___
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* |_| |___/_/\_\_| |_|_____|
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*
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* FIXME:
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* The osEventObs variable must be in protected memory. If not every box
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* and box 0 can modify osEventObs to point to any handler to run code
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* privileged. This issue is tracked at
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* <https://github.com/ARMmbed/uvisor/issues/235>.
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*/
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const OsEventObserver *osEventObs;
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void osRegisterForOsEvents(const OsEventObserver *observer)
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{
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static uint8_t has_been_called = 0;
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if (has_been_called) {
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return;
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}
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has_been_called = 1;
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osEventObs = observer;
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}
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