1 /* Architecture-specific glibc-hwcaps subdirectories. s390x version.
2 Copyright (C) 2020-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include <dl-hwcaps.h>
22 const char _dl_hwcaps_subdirs
[] = "z16:z15:z14:z13";
23 enum { subdirs_count
= 4 }; /* Number of components in _dl_hwcaps_subdirs. */
26 _dl_hwcaps_subdirs_active (void)
30 /* Test in reverse preference order. */
33 if (!(GLRO (dl_hwcap
) & HWCAP_S390_VX
))
34 return _dl_hwcaps_subdirs_build_bitmask (subdirs_count
, active
);
38 if (!((GLRO (dl_hwcap
) & HWCAP_S390_VXD
)
39 && (GLRO (dl_hwcap
) & HWCAP_S390_VXE
)
40 && (GLRO (dl_hwcap
) & HWCAP_S390_GS
)))
41 return _dl_hwcaps_subdirs_build_bitmask (subdirs_count
, active
);
45 Note: We do not list HWCAP_S390_SORT and HWCAP_S390_DFLT here as,
46 according to the Principles of Operation, those may be replaced or removed
48 if (!((GLRO (dl_hwcap
) & HWCAP_S390_VXRS_EXT2
)
49 && (GLRO (dl_hwcap
) & HWCAP_S390_VXRS_PDE
)))
50 return _dl_hwcaps_subdirs_build_bitmask (subdirs_count
, active
);
54 Note: We do not list HWCAP_S390_NNPA here as, according to the Principles of
55 Operation, those instructions may be replaced or removed in future. */
56 if (!(GLRO (dl_hwcap
) & HWCAP_S390_VXRS_PDE2
))
57 return _dl_hwcaps_subdirs_build_bitmask (subdirs_count
, active
);
60 return _dl_hwcaps_subdirs_build_bitmask (subdirs_count
, active
);