/**************************************************************************** * arch/sparc/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 directed but, rather, only indirectly * through include/syscall.h or include/sys/sycall.h */ #ifndef __ARCH_SPARC_INCLUDE_SYSCALL_H #define __ARCH_SPARC_INCLUDE_SYSCALL_H /**************************************************************************** * Included Files ****************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #define SYS_syscall 0x80 /* Configuration ************************************************************/ /* SYS call 1 and 2 are defined for internal use by the RISC-V port (see * arch/riscv/include/mips32/syscall.h). In addition, SYS call 3 is the * return from a SYS call in kernel mode. The first four syscall values must * therefore, be reserved (0 is not used). */ #ifndef CONFIG_BUILD_FLAT # define CONFIG_SYS_RESERVED 4 #else # define CONFIG_SYS_RESERVED 3 #endif /* sys_call macros **********************************************************/ #ifndef __ASSEMBLY__ /* Context switching system calls *******************************************/ /* SYS call 0: * * int up_saveusercontext(void *saveregs); */ #define SYS_save_context (0) /* SYS call 1: * * void sparc_fullcontextrestore(uint32_t *restoreregs) noreturn_function; */ #define SYS_restore_context (1) #define sparc_fullcontextrestore(restoreregs) \ sys_call1(SYS_restore_context, (uintptr_t)restoreregs) /* SYS call 2: * * void sparc_switchcontext(uint32_t *saveregs, uint32_t *restoreregs); */ #define SYS_switch_context (2) #define sparc_switchcontext(saveregs, restoreregs) \ sys_call2(SYS_switch_context, (uintptr_t)saveregs, (uintptr_t)restoreregs) #ifdef CONFIG_BUILD_KERNEL /* SYS call 3: * * void sparc_syscall_return(void); */ #define SYS_syscall_return (3) #define sparc_syscall_return() sys_call0(SYS_syscall_return) #endif #endif /* __ASSEMBLY__ */ /**************************************************************************** * Public Types ****************************************************************************/ /**************************************************************************** * Inline functions ****************************************************************************/ #ifndef __ASSEMBLY__ /**************************************************************************** * Public Data ****************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /**************************************************************************** * Name: sparc_syscall0 * * Description: * System call SYS_ argument and no additional parameters. * ****************************************************************************/ uintptr_t sys_call0(unsigned int nbr); /**************************************************************************** * Name: sparc_syscall1 * * Description: * System call SYS_ argument and one additional parameter. * ****************************************************************************/ uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1); /**************************************************************************** * Name: sparc_syscall2 * * Description: * System call SYS_ argument and two additional parameters. * ****************************************************************************/ uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1, uintptr_t parm2); /**************************************************************************** * Name: sparc_syscall3 * * Description: * System call SYS_ argument and three additional parameters. * ****************************************************************************/ uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3); /**************************************************************************** * Name: sparc_syscall4 * * Description: * System call SYS_ argument and four additional parameters. * ****************************************************************************/ uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3, uintptr_t parm4); /**************************************************************************** * Name: sparc_syscall5 * * Description: * System call SYS_ argument and five additional parameters. * ****************************************************************************/ uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3, uintptr_t parm4, uintptr_t parm5); #undef EXTERN #ifdef __cplusplus } #endif #endif /* __ASSEMBLY__ */ #endif /* __ARCH_SPARC_INCLUDE_SYSCALL_H */