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