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  	kernel_ulong_t sc_0 = nr;
      19  	register kernel_ulong_t sc_19 __asm__("$19");
      20  	__asm__ __volatile__("callsys"
      21  			     : "+v"(sc_0), "=r"(sc_19)
      22  			     :
      23  			     : "memory", "$1", "$2", "$3", "$4", "$5", "$6",
      24  			       "$7", "$8", "$16", "$17", "$18", "$20", "$21",
      25  			       "$22", "$23", "$24", "$25", "$27", "$28");
      26  	*err = sc_19;
      27  	return sc_0;
      28  }
      29  # define raw_syscall_0 raw_syscall_0
      30  
      31  #endif /* !STRACE_RAW_SYSCALL_H */