/**************************************************************************** * arch/arm/include/armv7-r/syscall.h * * Copyright (C) 2015 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /* This file should never be included directed but, rather, only indirectly * through include/syscall.h or include/sys/sycall.h */ #ifndef __ARCH_ARM_INCLUDE_ARMV7_R_SYSCALL_H #define __ARCH_ARM_INCLUDE_ARMV7_R_SYSCALL_H /**************************************************************************** * Included Files ****************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #define SYS_syscall 0x900001 /**************************************************************************** * Public Types ****************************************************************************/ /**************************************************************************** * Inline functions ****************************************************************************/ #ifndef __ASSEMBLY__ /* SVC with SYS_ call number and no parameters */ static inline uintptr_t sys_call0(unsigned int nbr) { register long reg0 __asm__("r0") = (long)(nbr); __asm__ __volatile__ ( "svc %1" : "=r"(reg0) : "i"(SYS_syscall), "r"(reg0) : "memory", "r14" ); return reg0; } /* SVC with SYS_ call number and one parameter */ static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1) { register long reg0 __asm__("r0") = (long)(nbr); register long reg1 __asm__("r1") = (long)(parm1); __asm__ __volatile__ ( "svc %1" : "=r"(reg0) : "i"(SYS_syscall), "r"(reg0), "r"(reg1) : "memory", "r14" ); 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) { 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"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2) : "memory", "r14" ); 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) { register long reg0 __asm__("r0") = (long)(nbr); 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"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3) : "memory", "r14" ); 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) { 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"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3), "r"(reg4) : "memory", "r14" ); 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) { 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"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3), "r"(reg4), "r"(reg5) : "memory", "r14" ); 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) { 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"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6) : "memory", "r14" ); 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_ARM_INCLUDE_ARMV7_R_SYSCALL_H */