1 /*
2 ** Copyright (c) 2020 HiHope Community.
3 **
4 ** Redistribution and use in source and binary forms, with or without
5 ** modification, are permitted provided that the following conditions are met:
6 **
7 ** 1. Redistributions of source code must retain the above copyright notice, this
8 ** list of conditions and the following disclaimer.
9 **
10 ** 2. Redistributions in binary form must reproduce the above copyright notice,
11 ** this list of conditions and the following disclaimer in the documentation
12 ** and/or other materials provided with the distribution.
13 **
14 ** 3. Neither the name of the copyright holder nor the names of its
15 ** contributors may be used to endorse or promote products derived from
16 ** this software without specific prior written permission.
17 **
18 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 ** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
22 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 ** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 **/
29
30 #ifndef PORTLITEOS_H
31 #define PORTLITEOS_H
32
33 #include <csi_core.h>
34
portEnableInterrupt(void)35 static inline void portEnableInterrupt(void)
36 {
37 __enable_irq();
38 }
39
portDisableInterrupt(void)40 static inline void portDisableInterrupt(void)
41 {
42 __disable_irq();
43 }
44
GetCurrentPSR(void)45 static inline long GetCurrentPSR (void)
46 {
47 return __get_PSR();
48 }
49
SaveLocalPSR(void)50 static inline long SaveLocalPSR (void)
51 {
52 long flags = __get_PSR();
53 __disable_irq();
54 return flags;
55 }
56
RestoreLocalPSR(long newMask)57 static inline void RestoreLocalPSR (long newMask)
58 {
59 __asm__ __volatile__(
60 "mtcr %0, psr \n"
61 :
62 :"r" (newMask)
63 :"memory"
64 );
65 }
66
67 #endif