6a3c2aded6
* Simplify EINTR/ECANCEL error handling 1. Add semaphore uninterruptible wait function 2 .Replace semaphore wait loop with a single uninterruptible wait 3. Replace all sem_xxx to nxsem_xxx * Unify the void cast usage 1. Remove void cast for function because many place ignore the returned value witout cast 2. Replace void cast for variable with UNUSED macro
209 lines
6.9 KiB
C
209 lines
6.9 KiB
C
/****************************************************************************
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* arch/misoc/include/minerva/syscall.h
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Ramtin Amin <keytwo@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/* This file should never be included directed but, rather, only indirectly
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* through include/syscall.h or include/sys/sycall.h
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*/
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#ifndef __ARCH_MISOC_INCLUDE_MINERVA_SYSCALL_H
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#define __ARCH_MISOC_INCLUDE_MINERVA_SYSCALL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifndef __ASSEMBLY__
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#include <stdint.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define SYS_syscall 0x00
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/* Configuration ************************************************************/
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/* SYS call 1 and 2 are defined for internal use by the MINERVA port (see
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* arch/miscoc/include/minerva/syscall.h). In addition, SYS call 3 is the
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* return from a SYS call in kernel mode. The first four syscall values
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* must, therefore, be reserved (0 is not used).
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*/
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#ifdef CONFIG_BUILD_KERNEL
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# ifndef CONFIG_SYS_RESERVED
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# error "CONFIG_SYS_RESERVED must be defined to the value 4"
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# elif CONFIG_SYS_RESERVED != 4
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# error "CONFIG_SYS_RESERVED must have the value 4"
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# endif
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#endif
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/* sys_call macros **********************************************************/
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#ifndef __ASSEMBLY__
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/* Context switching system calls *******************************************/
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/* SYS call 0: (not used) */
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/* SYS call 1:
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*
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* void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
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*/
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#define SYS_restore_context (1)
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#define up_fullcontextrestore(restoreregs) \
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sys_call1(SYS_restore_context, (uintptr_t)restoreregs)
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/* SYS call 2:
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*
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* void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
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*/
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#define SYS_switch_context (2)
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#define up_switchcontext(saveregs, restoreregs) \
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sys_call2(SYS_switch_context, (uintptr_t)saveregs, \
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(uintptr_t)restoreregs)
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#ifdef CONFIG_BUILD_KERNEL
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/* SYS call 3:
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*
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* void up_syscall_return(void);
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*/
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#define SYS_syscall_return (3)
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#define up_syscall_return() (void)sys_call0(SYS_syscall_return)
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Inline functions
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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# define EXTERN extern "C"
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extern "C"
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{
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#else
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# define EXTERN extern
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#endif
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/****************************************************************************
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* Name: up_syscall0
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*
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* Description:
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* System call SYS_ argument and no additional parameters.
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*
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****************************************************************************/
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uintptr_t sys_call0(unsigned int nbr);
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/****************************************************************************
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* Name: up_syscall1
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*
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* Description:
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* System call SYS_ argument and one additional parameter.
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*
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****************************************************************************/
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uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1);
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/****************************************************************************
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* Name: up_syscall2
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*
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* Description:
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* System call SYS_ argument and two additional parameters.
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*
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****************************************************************************/
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uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1, uintptr_t parm2);
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/****************************************************************************
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* Name: up_syscall3
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*
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* Description:
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* System call SYS_ argument and three additional parameters.
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*
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****************************************************************************/
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uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1, uintptr_t parm2,
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uintptr_t parm3);
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/****************************************************************************
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* Name: up_syscall4
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*
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* Description:
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* System call SYS_ argument and four additional parameters.
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*
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****************************************************************************/
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uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1, uintptr_t parm2,
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uintptr_t parm3, uintptr_t parm4);
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/****************************************************************************
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* Name: up_syscall5
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*
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* Description:
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* System call SYS_ argument and five additional parameters.
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*
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****************************************************************************/
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uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1, uintptr_t parm2,
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uintptr_t parm3, uintptr_t parm4, uintptr_t parm5);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_MISOC_INCLUDE_MINERVA_SYSCALL_H */
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