1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef _CM4F_PENDSV_H_
18 #define _CM4F_PENDSV_H_
19 
20 #include <stdbool.h>
21 #include <stdint.h>
22 
23 #define MAX_PENDSV_SUBSCRIBERS	4
24 
25 struct PendsvRegsLow {
26     uint32_t r0, r1, r2, r3;
27     uint32_t r12, lr, pc, cpsr;
28 };
29 
30 struct PendsvRegsHi {
31     uint32_t r4, r5, r6, r7;
32     uint32_t r8, r9, r10, r11;
33 };
34 
35 typedef void (*PendsvCallbackF)(struct PendsvRegsLow *loRegs, struct PendsvRegsHi *hiRegs);
36 
37 bool pendsvSubscribe(PendsvCallbackF cbk);	//may not be interrupt safe if reentered
38 bool pendsvUnsubscribe(PendsvCallbackF cbk);
39 void pendsvTrigger(void);
40 void pendsvClear(void);
41 bool pendsvIsPending(void);
42 
43 
44 #endif
45 
46