forked from xuos/xiuos
293 lines
8.6 KiB
C
293 lines
8.6 KiB
C
/****************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/**
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* @file kswitch.h
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* @brief risc-v ecall function
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* @version 1.0
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* @author AIIT XUOS Lab
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* @date 2021-04-25
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*/
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/*************************************************
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File name: kswitch.h
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Description: arm svc function
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Others: take incubator-nuttx arch/arm/include/armv7-m/syscall.h for references
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https://github.com/apache/incubator-nuttx/tree/master/arch/arm/include/armv7-m/syscall.h
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History:
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1. Date: 2021-04-25
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Author: AIIT XUOS Lab
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Modification:
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1. Modify function name for a unified
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2. Add some functions when there is no system call
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*************************************************/
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#ifndef __XS_ARM_M4_KSWITCH_H__
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#define __XS_ARM_M4_KSWITCH_H__
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#include <stdint.h>
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// #include <xs_service.h>
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#include "../../../kernel/include/xs_service.h"
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#ifdef TASK_ISOLATION
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#define KERNEL_SWITCH 0x00
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/****************************************************************************
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* kernel switch functions
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****************************************************************************/
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/* SVC call with call number and no parameters */
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static inline unsigned long KSwitch0(unsigned int nbr)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0)
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: "memory"
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);
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return reg0;
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}
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/* SVC call with call number and one parameter */
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static inline unsigned long KSwitch1(unsigned int nbr, unsigned long parm1)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg1 __asm__("r1") = (long)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1)
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: "memory"
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);
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return reg0;
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}
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/* SVC call with call number and two parameters */
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static inline unsigned long KSwitch2(unsigned int nbr, unsigned long parm1,
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unsigned long parm2)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg2 __asm__("r2") = (long)(parm2);
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register long reg1 __asm__("r1") = (long)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2)
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: "memory"
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);
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return reg0;
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}
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/* SVC call with call number and four parameters.
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*
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*/
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static inline unsigned long KSwitch3(unsigned int nbr, unsigned long parm1,
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unsigned long parm2, unsigned long parm3)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg1 __asm__("r1") = (long)(parm1);
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register long reg2 __asm__("r2") = (long)(parm2);
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register long reg3 __asm__("r3") = (long)(parm3);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
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"r"(reg3)
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: "memory"
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);
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return reg0;
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}
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static inline unsigned long KSwitch4(unsigned int nbr, unsigned long parm1,
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unsigned long parm2, unsigned long parm3,
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unsigned long parm4)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg4 __asm__("r4") = (long)(parm4);
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register long reg3 __asm__("r3") = (long)(parm3);
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register long reg2 __asm__("r2") = (long)(parm2);
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register long reg1 __asm__("r1") = (long)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
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"r"(reg3), "r"(reg4)
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: "memory"
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);
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return reg0;
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}
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/* SVC call with call number and five parameters.
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*
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*/
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static inline unsigned long KSwitch5(unsigned int nbr, unsigned long parm1,
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unsigned long parm2, unsigned long parm3,
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unsigned long parm4, unsigned long parm5)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg5 __asm__("r5") = (long)(parm5);
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register long reg4 __asm__("r4") = (long)(parm4);
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register long reg3 __asm__("r3") = (long)(parm3);
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register long reg2 __asm__("r2") = (long)(parm2);
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register long reg1 __asm__("r1") = (long)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
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"r"(reg3), "r"(reg4), "r"(reg5)
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: "memory"
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);
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return reg0;
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}
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/* SVC call with call number and six parameters.
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*
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*/
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static inline unsigned long KSwitch6(unsigned int nbr, unsigned long parm1,
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unsigned long parm2, unsigned long parm3,
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unsigned long parm4, unsigned long parm5,
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unsigned long parm6)
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{
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register long reg0 __asm__("r0") = (long)(nbr);
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register long reg6 __asm__("r6") = (long)(parm6);
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register long reg5 __asm__("r5") = (long)(parm5);
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register long reg4 __asm__("r4") = (long)(parm4);
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register long reg3 __asm__("r3") = (long)(parm3);
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register long reg2 __asm__("r2") = (long)(parm2);
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register long reg1 __asm__("r1") = (long)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
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"r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6)
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: "memory"
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);
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return reg0;
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}
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#else
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static inline unsigned long KSwitch0(unsigned int knum)
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{
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uintptr_t param[1] = {0};
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uint8_t num = 0;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch1(unsigned int knum, unsigned long arg1)
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{
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uintptr_t param[1] = {0};
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uint8_t num = 1;
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param[0] = arg1;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch2(unsigned int knum, unsigned long arg1,
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unsigned long arg2)
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{
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uintptr_t param[2] = {0};
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uint8_t num = 2;
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param[0] = arg1;
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param[1] = arg2;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch3(unsigned int knum, unsigned long arg1,
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unsigned long arg2, unsigned long arg3)
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{
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uintptr_t param[3] = {0};
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uint8_t num = 3;
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param[0] = arg1;
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param[1] = arg2;
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param[2] = arg3;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch4(unsigned int knum, unsigned long arg1,
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unsigned long arg2, unsigned long arg3,
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unsigned long arg4)
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{
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uintptr_t param[4] = {0};
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uint8_t num = 4;
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param[0] = arg1;
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param[1] = arg2;
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param[2] = arg3;
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param[3] = arg4;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch5(unsigned int knum, unsigned long arg1,
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unsigned long arg2, unsigned long arg3,
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unsigned long arg4, unsigned long arg5)
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{
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uintptr_t param[5] = {0};
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uint8_t num = 5;
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param[0] = arg1;
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param[1] = arg2;
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param[2] = arg3;
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param[3] = arg4;
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param[4] = arg5;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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static inline unsigned long KSwitch6(unsigned int knum, unsigned long arg1,
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unsigned long arg2, unsigned long arg3,
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unsigned long arg4, unsigned long arg5,
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unsigned long arg6)
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{
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uintptr_t param[6] = {0};
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uint8_t num = 6;
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param[0] = arg1;
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param[1] = arg2;
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param[2] = arg3;
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param[3] = arg4;
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param[4] = arg5;
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param[5] = arg6;
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(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
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}
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#endif
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#endif
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