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incubator-nuttx/arch/tricore/include/syscall.h

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/****************************************************************************
* arch/tricore/include/syscall.h
*
* 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.
*
****************************************************************************/
/* This file should never be included directly but, rather, only indirectly
* through include/syscall.h or include/sys/sycall.h
*/
#ifndef __ARCH_TRICORE_INCLUDE_SYSCALL_H
#define __ARCH_TRICORE_INCLUDE_SYSCALL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Prototypes
****************************************************************************/
#define SYS_syscall 0x00
/* Configuration ************************************************************/
/* This logic uses three system calls {0,1,2} for context switching and one
* for the syscall return.
* So a minimum of four syscall values must be reserved.
* If CONFIG_BUILD_FLAT isn't defined, then four more syscall values must
* be reserved.
*/
#ifndef CONFIG_BUILD_FLAT
# define CONFIG_SYS_RESERVED 8
#else
# define CONFIG_SYS_RESERVED 4
#endif
/* Cortex-M system calls ****************************************************/
/* SYS call 1:
*
* void tricore_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
*/
#define SYS_restore_context (1)
/* SYS call 2:
*
* void tricore_switchcontext(uint32_t **saveregs, uint32_t *restoreregs);
*/
#define SYS_switch_context (2)
#ifdef CONFIG_LIB_SYSCALL
/* SYS call 3:
*
* void tricore_syscall_return(void);
*/
#define SYS_syscall_return (3)
#endif /* CONFIG_LIB_SYSCALL */
#ifndef CONFIG_BUILD_FLAT
/* SYS call 4:
*
* void up_task_start(main_t taskentry, int argc, char *argv[])
* noreturn_function;
*/
#define SYS_task_start (4)
/* SYS call 5:
*
* void up_pthread_start((pthread_startroutine_t startup,
* pthread_startroutine_t entrypt, pthread_addr_t arg)
* noreturn_function
*/
#define SYS_pthread_start (5)
/* SYS call 6:
*
* void signal_handler(_sa_sigaction_t sighand,
* int signo, siginfo_t *info,
* void *ucontext);
*/
#define SYS_signal_handler (6)
/* SYS call 7:
*
* void signal_handler_return(void);
*/
#define SYS_signal_handler_return (7)
#endif /* !CONFIG_BUILD_FLAT */
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
#ifndef __ASSEMBLY__
/* SVC with SYS_ call number and no parameters */
static inline uintptr_t sys_call0(unsigned int nbr)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
:
: "d"(nbr)
: "d8"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(nbr)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and one parameter */
static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
:
: "d"(nbr), "d"(parm1)
: "d8", "d9"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and two parameters */
static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1,
uintptr_t parm2)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
"mov d10, %2 \n\t"
:
: "d"(nbr), "d"(parm1), "d"(parm2)
: "d8", "d9", "d10"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg2 __asm__("d10") = (long)(parm2);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1), "d"(reg2)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and three parameters */
static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1,
uintptr_t parm2, uintptr_t parm3)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
"mov d10, %2 \n\t"
"mov d11, %3 \n\t"
:
: "d"(nbr), "d"(parm1), "d"(parm2), "d"(parm3)
: "d8", "d9", "d10", "d11"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg3 __asm__("d11") = (long)(parm3);
register long reg2 __asm__("d10") = (long)(parm2);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1), "d"(reg2), "d"(reg3)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and four parameters */
static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1,
uintptr_t parm2, uintptr_t parm3,
uintptr_t parm4)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
"mov d10, %2 \n\t"
"mov d11, %3 \n\t"
"mov d12, %4 \n\t"
:
: "d"(nbr), "d"(parm1), "d"(parm2), "d"(parm3), "d"(parm4)
: "d8", "d9", "d10", "d11", "d12"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg4 __asm__("d12") = (long)(parm4);
register long reg3 __asm__("d11") = (long)(parm3);
register long reg2 __asm__("d10") = (long)(parm2);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1), "d"(reg2),
"d"(reg3), "d"(reg4)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and five parameters */
static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1,
uintptr_t parm2, uintptr_t parm3,
uintptr_t parm4, uintptr_t parm5)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
"mov d10, %2 \n\t"
"mov d11, %3 \n\t"
"mov d12, %4 \n\t"
"mov d13, %5 \n\t"
:
: "d"(nbr), "d"(parm1), "d"(parm2), "d"(parm3), "d"(parm4), "d"(parm5)
: "d8", "d9", "d10", "d11", "d12", "d13"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg5 __asm__("d13") = (long)(parm5);
register long reg4 __asm__("d12") = (long)(parm4);
register long reg3 __asm__("d11") = (long)(parm3);
register long reg2 __asm__("d10") = (long)(parm2);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1), "d"(reg2),
"d"(reg3), "d"(reg4), "d"(reg5)
: "memory", "a11"
);
#endif
return reg0;
}
/* SVC with SYS_ call number and six parameters */
static inline uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1,
uintptr_t parm2, uintptr_t parm3,
uintptr_t parm4, uintptr_t parm5,
uintptr_t parm6)
{
#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
register long reg0;
__asm volatile
(
"mov d8, %0 \n\t"
"mov d9, %1 \n\t"
"mov d10, %2 \n\t"
"mov d11, %3 \n\t"
"mov d12, %4 \n\t"
"mov d13, %5 \n\t"
"mov d14, %6 \n\t"
:
: "d"(nbr), "d"(parm1), "d"(parm2),
"d"(parm3), "d"(parm4), "d"(parm5), "d"(parm6)
: "d8", "d9", "d10", "d11", "d12", "d13", "d14"
);
__asm volatile
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall)
: "memory", "a11"
);
#else
register long reg0 __asm__("d8") = (long)(nbr);
register long reg6 __asm__("d14") = (long)(parm6);
register long reg5 __asm__("d13") = (long)(parm5);
register long reg4 __asm__("d12") = (long)(parm4);
register long reg3 __asm__("d11") = (long)(parm3);
register long reg2 __asm__("d10") = (long)(parm2);
register long reg1 __asm__("d9") = (long)(parm1);
__asm__ __volatile__
(
"syscall %1"
: "=d"(reg0)
: "i"(SYS_syscall), "d"(reg0), "d"(reg1), "d"(reg2),
"d"(reg3), "d"(reg4), "d"(reg5), "d"(reg6)
: "memory", "a11"
);
#endif
return reg0;
}
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_TRICORE_INCLUDE_SYSCALL_H */
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