1  /*
       2   * Raw syscalls.
       3   *
       4   * Copyright (c) 2018-2021 The strace developers.
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: LGPL-2.1-or-later
       8   */
       9  
      10  #ifndef STRACE_RAW_SYSCALL_H
      11  # define STRACE_RAW_SYSCALL_H
      12  
      13  # include "kernel_types.h"
      14  
      15  static inline kernel_ulong_t
      16  raw_syscall_0(const kernel_ulong_t nr, kernel_ulong_t *err)
      17  {
      18  	*err = 0;
      19  	register kernel_ulong_t r3 __asm__("%r3") = nr;
      20  	register kernel_ulong_t r0 __asm__("%r0");
      21  	__asm__ __volatile__("trapa #0x10\n\t"
      22  			     "or r0,r0\n\t"
      23  			     "or r0,r0\n\t"
      24  			     "or r0,r0\n\t"
      25  			     "or r0,r0\n\t"
      26  			     "or r0,r0\n\t"
      27  			     : "=r"(r0)
      28  			     : "r"(r3)
      29  			     : "memory", "t");
      30  	return r0;
      31  }
      32  # define raw_syscall_0 raw_syscall_0
      33  
      34  #endif /* !STRACE_RAW_SYSCALL_H */