1  /*
       2   * Copyright (c) 2018-2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   */
       7  
       8  #ifndef STRACE_RAW_SYSCALL_H
       9  # define STRACE_RAW_SYSCALL_H
      10  
      11  # include "kernel_types.h"
      12  
      13  static inline kernel_ulong_t
      14  raw_syscall_0(const kernel_ulong_t nr, kernel_ulong_t *err)
      15  {
      16  # if defined(__CSKYABIV2__)
      17  	register kernel_ulong_t scno __asm__("r7") = nr;
      18  # else
      19  	register kernel_ulong_t scno __asm__("r1") = nr;
      20  # endif
      21  	register kernel_ulong_t a0 __asm__("a0");
      22  	asm volatile("trap 0"
      23  		: "+r"(scno), "=r"(a0)
      24  		:
      25  		: "memory");
      26  
      27  	*err = 0;
      28  	return a0;
      29  }
      30  # define raw_syscall_0 raw_syscall_0
      31  
      32  #endif /* !STRACE_RAW_SYSCALL_H */