1 /* ----------------------------------------------------------------------------
2 * Copyright (c) Huawei Technologies Co., Ltd. 2022-2023. All rights reserved.
3 * Description: Interrupt Operations HeadFile
4 * Author: Huawei LiteOS Team
5 * Create: 2022-12-20
6 * Redistribution and use in source and binary forms, with or without modification,
7 * are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
14 * to endorse or promote products derived from this software without specific prior written
15 * permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * --------------------------------------------------------------------------- */
28
29 #ifndef _ARCH_INTERRUPT_H
30 #define _ARCH_INTERRUPT_H
31
32 #include "los_typedef.h"
33 #include "arch/cpu.h"
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif /* __cplusplus */
38
ArchIntLocked(VOID)39 STATIC INLINE UINT32 ArchIntLocked(VOID)
40 {
41 UINT32 intSave;
42 __asm__ volatile("csrr %0, mstatus " : "=r"(intSave) : : "memory");
43
44 return !(intSave & LOS_MSTATUS_MIE);
45 }
46
47 extern UINT32 ArchIntUnlock(VOID);
48 extern UINT32 ArchIntLock(VOID);
49 extern VOID ArchIntRestore(UINT32 uvIntSave);
50
51 #ifdef __cplusplus
52 }
53 #endif /* __cplusplus */
54
55 #endif /* _ARCH_INTERRUPT_H */
56