You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

292 lines
8.6 KiB

/****************************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/**
* @file kswitch.h
* @brief risc-v ecall function
* @version 1.0
* @author AIIT XUOS Lab
* @date 2021-04-25
*/
/*************************************************
File name: kswitch.h
Description: arm svc function
Others: take incubator-nuttx arch/arm/include/armv7-m/syscall.h for references
https://github.com/apache/incubator-nuttx/tree/master/arch/arm/include/armv7-m/syscall.h
History:
1. Date: 2021-04-25
Author: AIIT XUOS Lab
Modification:
1. Modify function name for a unified
2. Add some functions when there is no system call
*************************************************/
#ifndef __XS_ARM_M4_KSWITCH_H__
#define __XS_ARM_M4_KSWITCH_H__
#include <stdint.h>
// #include <xs_service.h>
#include "../../../kernel/include/xs_service.h"
#ifdef TASK_ISOLATION
#define KERNEL_SWITCH 0x00
/****************************************************************************
* kernel switch functions
****************************************************************************/
/* SVC call with call number and no parameters */
static inline unsigned long KSwitch0(unsigned int nbr)
{
register long reg0 __asm__("r0") = (long)(nbr);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0)
: "memory"
);
return reg0;
}
/* SVC call with call number and one parameter */
static inline unsigned long KSwitch1(unsigned int nbr, unsigned long parm1)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg1 __asm__("r1") = (long)(parm1);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1)
: "memory"
);
return reg0;
}
/* SVC call with call number and two parameters */
static inline unsigned long KSwitch2(unsigned int nbr, unsigned long parm1,
unsigned long parm2)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg2 __asm__("r2") = (long)(parm2);
register long reg1 __asm__("r1") = (long)(parm1);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2)
: "memory"
);
return reg0;
}
/* SVC call with call number and four parameters.
*
*/
static inline unsigned long KSwitch3(unsigned int nbr, unsigned long parm1,
unsigned long parm2, unsigned long parm3)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg1 __asm__("r1") = (long)(parm1);
register long reg2 __asm__("r2") = (long)(parm2);
register long reg3 __asm__("r3") = (long)(parm3);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
"r"(reg3)
: "memory"
);
return reg0;
}
static inline unsigned long KSwitch4(unsigned int nbr, unsigned long parm1,
unsigned long parm2, unsigned long parm3,
unsigned long parm4)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg4 __asm__("r4") = (long)(parm4);
register long reg3 __asm__("r3") = (long)(parm3);
register long reg2 __asm__("r2") = (long)(parm2);
register long reg1 __asm__("r1") = (long)(parm1);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
"r"(reg3), "r"(reg4)
: "memory"
);
return reg0;
}
/* SVC call with call number and five parameters.
*
*/
static inline unsigned long KSwitch5(unsigned int nbr, unsigned long parm1,
unsigned long parm2, unsigned long parm3,
unsigned long parm4, unsigned long parm5)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg5 __asm__("r5") = (long)(parm5);
register long reg4 __asm__("r4") = (long)(parm4);
register long reg3 __asm__("r3") = (long)(parm3);
register long reg2 __asm__("r2") = (long)(parm2);
register long reg1 __asm__("r1") = (long)(parm1);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
"r"(reg3), "r"(reg4), "r"(reg5)
: "memory"
);
return reg0;
}
/* SVC call with call number and six parameters.
*
*/
static inline unsigned long KSwitch6(unsigned int nbr, unsigned long parm1,
unsigned long parm2, unsigned long parm3,
unsigned long parm4, unsigned long parm5,
unsigned long parm6)
{
register long reg0 __asm__("r0") = (long)(nbr);
register long reg6 __asm__("r6") = (long)(parm6);
register long reg5 __asm__("r5") = (long)(parm5);
register long reg4 __asm__("r4") = (long)(parm4);
register long reg3 __asm__("r3") = (long)(parm3);
register long reg2 __asm__("r2") = (long)(parm2);
register long reg1 __asm__("r1") = (long)(parm1);
__asm__ __volatile__
(
"svc %1"
: "=r"(reg0)
: "i"(KERNEL_SWITCH), "r"(reg0), "r"(reg1), "r"(reg2),
"r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6)
: "memory"
);
return reg0;
}
#else
static inline unsigned long KSwitch0(unsigned int knum)
{
uintptr_t param[1] = {0};
uint8_t num = 0;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch1(unsigned int knum, unsigned long arg1)
{
uintptr_t param[1] = {0};
uint8_t num = 1;
param[0] = arg1;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch2(unsigned int knum, unsigned long arg1,
unsigned long arg2)
{
uintptr_t param[2] = {0};
uint8_t num = 2;
param[0] = arg1;
param[1] = arg2;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch3(unsigned int knum, unsigned long arg1,
unsigned long arg2, unsigned long arg3)
{
uintptr_t param[3] = {0};
uint8_t num = 3;
param[0] = arg1;
param[1] = arg2;
param[2] = arg3;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch4(unsigned int knum, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4)
{
uintptr_t param[4] = {0};
uint8_t num = 4;
param[0] = arg1;
param[1] = arg2;
param[2] = arg3;
param[3] = arg4;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch5(unsigned int knum, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
uintptr_t param[5] = {0};
uint8_t num = 5;
param[0] = arg1;
param[1] = arg2;
param[2] = arg3;
param[3] = arg4;
param[4] = arg5;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
static inline unsigned long KSwitch6(unsigned int knum, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5,
unsigned long arg6)
{
uintptr_t param[6] = {0};
uint8_t num = 6;
param[0] = arg1;
param[1] = arg2;
param[2] = arg3;
param[3] = arg4;
param[4] = arg5;
param[5] = arg6;
(struct KernelService*)SERVICETABLE[knum].fun(knum, param, num);
}
#endif
#endif