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- /****************************************************************************
- * arch/x86_64/include/intel64/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_X86_64_INCLUDE_INTEL64_SYSCALL_H
- #define __ARCH_X86_64_INCLUDE_INTEL64_SYSCALL_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <stdint.h>
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Public Types
- ****************************************************************************/
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- /****************************************************************************
- * Public Function Prototypes
- ****************************************************************************/
- #ifndef __ASSEMBLY__
- #ifdef __cplusplus
- #define EXTERN extern "C"
- extern "C"
- {
- #else
- #define EXTERN extern
- #endif
- void enable_syscall(void);
- void syscall_entry(void);
- uint64_t syscall_handler(unsigned long nbr, uintptr_t parm1, uintptr_t parm2,
- uintptr_t parm3, uintptr_t parm4, uintptr_t parm5,
- uintptr_t parm6);
- uint64_t linux_interface(unsigned long nbr, uintptr_t parm1, uintptr_t parm2,
- uintptr_t parm3, uintptr_t parm4, uintptr_t parm5,
- uintptr_t parm6);
- /* SWI 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);
- /* SWI with SYS_ call number and no parameters */
- static inline uintptr_t sys_call0(unsigned int nbr)
- {
- return sys_call6(nbr, 0, 0, 0, 0, 0, 0);
- }
- /* SWI with SYS_ call number and one parameter */
- static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1)
- {
- return sys_call6(nbr, parm1, 0, 0, 0, 0, 0);
- }
- /* SWI with SYS_ call number and two parameters */
- static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1,
- uintptr_t parm2)
- {
- return sys_call6(nbr, parm1, parm2, 0, 0, 0, 0);
- }
- /* SWI 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)
- {
- return sys_call6(nbr, parm1, parm2, parm3, 0, 0, 0);
- }
- /* SWI 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)
- {
- return sys_call6(nbr, parm1, parm2, parm3, parm4, 0, 0);
- }
- /* SWI 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)
- {
- return sys_call6(nbr, parm1, parm2, parm3, parm4, parm5, 0);
- }
- 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 uint64_t reg0 __asm__("rax") = (uint64_t)(nbr);
- register uint64_t reg1 __asm__("rdi") = (uint64_t)(parm1);
- register uint64_t reg2 __asm__("rsi") = (uint64_t)(parm2);
- register uint64_t reg3 __asm__("rdx") = (uint64_t)(parm3);
- register uint64_t reg4 __asm__("r10") = (uint64_t)(parm4);
- register uint64_t reg5 __asm__("r8") = (uint64_t)(parm5);
- register uint64_t reg6 __asm__("r9") = (uint64_t)(parm6);
- __asm__ __volatile__
- (
- "syscall"
- : "=r"(reg0)
- : "r"(reg0), "r"(reg1), "r"(reg2),
- "r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6)
- : "memory"
- );
- return reg0;
- }
- #undef EXTERN
- #ifdef __cplusplus
- }
- #endif
- #endif
- #endif /* __ARCH_X86_64_INCLUDE_INTEL64_SYSCALL_H */
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