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f267e1c9dd
The subdirectories match those in the x86-64 psABI:
77566eb03b
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/* Architecture-specific glibc-hwcaps subdirectories. x86 version.
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Copyright (C) 2020 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 <cpu-features.h>
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const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
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enum { subdirs_count = 3 }; /* 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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/* x86-64-v2. */
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if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
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&& CPU_FEATURE_USABLE (LAHF64_SAHF64)
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&& CPU_FEATURE_USABLE (POPCNT)
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&& CPU_FEATURE_USABLE (SSE3)
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&& CPU_FEATURE_USABLE (SSE4_1)
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&& CPU_FEATURE_USABLE (SSE4_2)
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&& CPU_FEATURE_USABLE (SSSE3)))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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/* x86-64-v3. */
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if (!(CPU_FEATURE_USABLE (AVX)
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&& CPU_FEATURE_USABLE (AVX2)
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&& CPU_FEATURE_USABLE (BMI1)
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&& CPU_FEATURE_USABLE (BMI2)
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&& CPU_FEATURE_USABLE (F16C)
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&& CPU_FEATURE_USABLE (FMA)
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&& CPU_FEATURE_USABLE (LZCNT)
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&& CPU_FEATURE_USABLE (MOVBE)
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&& CPU_FEATURE_USABLE (OSXSAVE)))
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return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
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++active;
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/* x86-64-v4. */
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if (!(CPU_FEATURE_USABLE (AVX512F)
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&& CPU_FEATURE_USABLE (AVX512BW)
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&& CPU_FEATURE_USABLE (AVX512CD)
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&& CPU_FEATURE_USABLE (AVX512DQ)
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&& CPU_FEATURE_USABLE (AVX512VL)))
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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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