/* Architecture-specific glibc-hwcaps subdirectories.  s390x version.

   Copyright (C) 2020 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#include <dl-hwcaps.h>

#include <ldsodefs.h>

const char _dl_hwcaps_subdirs[] = "z15:z14:z13";

enum { subdirs_count = 3 }; /* Number of components in _dl_hwcaps_subdirs.  */

uint32_t

_dl_hwcaps_subdirs_active (void)

{

  int active = 0;

  /* Test in reverse preference order.  */

  /* z13.  */

  if (!(GLRO (dl_hwcap) & HWCAP_S390_VX))

    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);

  ++active;

  /* z14.  */

  if (!((GLRO (dl_hwcap) & HWCAP_S390_VXD)

        && (GLRO (dl_hwcap) & HWCAP_S390_VXE)

        && (GLRO (dl_hwcap) & HWCAP_S390_GS)))

    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);

  ++active;

  /* z15.

     Note: We do not list HWCAP_S390_SORT and HWCAP_S390_DFLT here as,

     according to the Principles of Operation, those may be replaced or removed

     in future.  */

  if (!((GLRO (dl_hwcap) & HWCAP_S390_VXRS_EXT2)

        && (GLRO (dl_hwcap) & HWCAP_S390_VXRS_PDE)))

    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);

  ++active;

  return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);

}