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62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/* Architecture-specific glibc-hwcaps subdirectories. s390x version.
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Copyright (C) 2020-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <dl-hwcaps.h>
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#include <ldsodefs.h>
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const char _dl_hwcaps_subdirs[] = "z16:z15:z14:z13";
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enum { subdirs_count = 4 }; /* Number of components in _dl_hwcaps_subdirs. */
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uint32_t
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_dl_hwcaps_subdirs_active (void)
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{
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int active = 0;
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/* Test in reverse preference order. */
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/* z13. */
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if (!(GLRO (dl_hwcap) & HWCAP_S390_VX))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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/* z14. */
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if (!((GLRO (dl_hwcap) & HWCAP_S390_VXD)
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&& (GLRO (dl_hwcap) & HWCAP_S390_VXE)
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&& (GLRO (dl_hwcap) & HWCAP_S390_GS)))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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/* z15.
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Note: We do not list HWCAP_S390_SORT and HWCAP_S390_DFLT here as,
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according to the Principles of Operation, those may be replaced or removed
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in future. */
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if (!((GLRO (dl_hwcap) & HWCAP_S390_VXRS_EXT2)
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&& (GLRO (dl_hwcap) & HWCAP_S390_VXRS_PDE)))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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/* z16.
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Note: We do not list HWCAP_S390_NNPA here as, according to the Principles of
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Operation, those instructions may be replaced or removed in future. */
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if (!(GLRO (dl_hwcap) & HWCAP_S390_VXRS_PDE2))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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}
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