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https://sourceware.org/git/glibc.git
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x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
77566eb03b
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
parent
600d9e0c87
commit
f267e1c9dd
@ -1832,7 +1832,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
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# glibc-hwcaps mechanism for this architecture). Used to obtain test
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# coverage for some glibc-hwcaps tests for the widest possible range
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# of systems.
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glibc-hwcaps-first-subdirs-for-tests =
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glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
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# The test modules are parameterized by preprocessor macros.
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LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
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@ -4,3 +4,13 @@
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cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
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cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
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cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
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mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
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cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
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mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
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cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
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cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
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mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
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cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
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cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
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cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
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@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
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CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
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CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
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endif
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$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
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$(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
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$(objpfx)tst-glibc-hwcaps.out: \
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$(objpfx)libmarkermod2.so \
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
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$(objpfx)libmarkermod3.so \
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
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$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
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$(objpfx)libmarkermod4.so \
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
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$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
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$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
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$(make-target-directory)
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cp $< $@
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
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$(make-target-directory)
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cp $< $@
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$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
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$(make-target-directory)
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cp $< $@
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$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
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$(make-target-directory)
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cp $< $@
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$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
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$(make-target-directory)
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cp $< $@
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$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
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$(make-target-directory)
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cp $< $@
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ifeq (no,$(build-hardcoded-path-in-tests))
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# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
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# interferes with its test objectives.
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tests-container += tst-glibc-hwcaps-cache
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endif
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endif # $(subdir) == elf
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ifeq ($(subdir),csu)
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gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
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endif
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66
sysdeps/x86_64/dl-hwcaps-subdirs.c
Normal file
66
sysdeps/x86_64/dl-hwcaps-subdirs.c
Normal file
@ -0,0 +1,66 @@
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/* 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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76
sysdeps/x86_64/tst-glibc-hwcaps.c
Normal file
76
sysdeps/x86_64/tst-glibc-hwcaps.c
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@ -0,0 +1,76 @@
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/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
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#include <support/check.h>
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#include <sys/param.h>
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#include <sys/platform/x86.h>
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extern int marker2 (void);
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extern int marker3 (void);
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extern int marker4 (void);
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/* Return the x86-64-vN level, 1 for the baseline. */
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static int
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compute_level (void)
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{
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const struct cpu_features *cpu_features
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= __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
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if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
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&& CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
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&& CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
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&& CPU_FEATURE_USABLE_P (cpu_features, MMX)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSE)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSE2)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSE3)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
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&& CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
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return 1;
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if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX2)
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&& CPU_FEATURE_USABLE_P (cpu_features, BMI1)
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&& CPU_FEATURE_USABLE_P (cpu_features, BMI2)
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&& CPU_FEATURE_USABLE_P (cpu_features, F16C)
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&& CPU_FEATURE_USABLE_P (cpu_features, FMA)
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&& CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
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&& CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
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&& CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
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return 2;
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if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
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&& CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
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return 3;
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return 4;
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}
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static int
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do_test (void)
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{
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int level = compute_level ();
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printf ("info: detected x86-64 micro-architecture level: %d\n", level);
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TEST_COMPARE (marker2 (), MIN (level, 2));
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TEST_COMPARE (marker3 (), MIN (level, 3));
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TEST_COMPARE (marker4 (), MIN (level, 4));
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return 0;
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}
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#include <support/test-driver.c>
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