1  /*
       2   * Copyright (c) 2015-2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   */
       7  
       8  /* Return -1 on error or 1 on success (never 0!). */
       9  static int
      10  arch_get_syscall_args(struct tcb *tcp)
      11  {
      12  	static const int argreg[MAX_ARGS] = {
      13  		PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5
      14  	};
      15  
      16  	for (unsigned int i = 0; i < n_args(tcp); ++i)
      17  		if (upeek(tcp, argreg[i], &tcp->u_arg[i]) < 0)
      18  			return -1;
      19  	return 1;
      20  }