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 codes: 1 - ok, 0 - ignore, other - error. */
       9  static int
      10  arch_get_scno(struct tcb *tcp)
      11  {
      12  	tcp->scno = ppc_regs.gpr[0];
      13  	/*
      14  	 * Check for 64/32 bit mode.
      15  	 * Embedded implementations covered by Book E extension of PPC use
      16  	 * bit 0 (CM) of 32-bit Machine state register (MSR).
      17  	 * Other implementations use bit 0 (SF) of 64-bit MSR.
      18  	 */
      19  	unsigned int currpers = (ppc_regs.msr & 0x8000000080000000) ? 0 : 1;
      20  	update_personality(tcp, currpers);
      21  	return 1;
      22  }