public inbox for glibc-cvs@sourceware.org
help / color / mirror / Atom feed
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-10-01 16:54 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-10-01 16:54 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e475fe134a06dca71b7bab3cd270fb0ef89720fd
commit e475fe134a06dca71b7bab3cd270fb0ef89720fd
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Jun 19 15:36:42 2020 +0200
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
sysdeps/x86_64/dl-hwcaps-subdirs.c | 69 ++++++++++++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..0a732a026b
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,69 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+
+int32_t
+_dl_hwcaps_subdirs_active (void)
+{
+ int32_t result = 0;
+ int32_t bit = 1 << 2;
+
+ /* Test in reverse preference order. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return result;
+ result |= bit;
+ bit >>= 1;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return result;
+ result |= bit;
+ bit >>= 1;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return result;
+ result |= bit;
+ bit >>= 1;
+
+ return result;
+}
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-12-04 8:14 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-12-04 8:14 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=973a3eb2bdd8780385552e157333ac1aafdea366
commit 973a3eb2bdd8780385552e157333ac1aafdea366
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Dec 4 09:13:43 2020 +0100
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diff:
---
elf/Makefile | 2 +-
elf/tst-glibc-hwcaps-cache.script | 10 +++++
sysdeps/x86_64/Makefile | 39 +++++++++++++++++++
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 +++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 76 ++++++++++++++++++++++++++++++++++++++
5 files changed, 192 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 95cbf66c25..09ff878d7a 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1832,7 +1832,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
# glibc-hwcaps mechanism for this architecture). Used to obtain test
# coverage for some glibc-hwcaps tests for the widest possible range
# of systems.
-glibc-hwcaps-first-subdirs-for-tests =
+glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
# The test modules are parameterized by preprocessor macros.
LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
diff --git a/elf/tst-glibc-hwcaps-cache.script b/elf/tst-glibc-hwcaps-cache.script
index 6356d15208..66d6942402 100644
--- a/elf/tst-glibc-hwcaps-cache.script
+++ b/elf/tst-glibc-hwcaps-cache.script
@@ -4,3 +4,13 @@
cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
+
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
+cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
+cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
+cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
+cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
+cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
+cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..d1d7cb9d2e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
+
+$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
+ $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)libmarkermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
+ $(objpfx)libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
+ $(objpfx)libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+ifeq (no,$(build-hardcoded-path-in-tests))
+# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
+# interferes with its test objectives.
+tests-container += tst-glibc-hwcaps-cache
endif
+endif # $(subdir) == elf
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..3075a8286d
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,76 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+#include <sys/platform/x86.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ const struct cpu_features *cpu_features
+ = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
+ && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MMX)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE2)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
+ return 1;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, F16C)
+ && CPU_FEATURE_USABLE_P (cpu_features, FMA)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
+ && CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
+ return 2;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-12-01 20:55 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-12-01 20:55 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bacfef11280cdd1d5e335d86b67aaa050f7a5b17
commit bacfef11280cdd1d5e335d86b67aaa050f7a5b17
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Dec 1 10:58:51 2020 +0100
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
elf/Makefile | 2 +-
elf/tst-glibc-hwcaps-cache.script | 10 +++++
sysdeps/x86_64/Makefile | 39 +++++++++++++++++++
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 +++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 76 ++++++++++++++++++++++++++++++++++++++
5 files changed, 192 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 95cbf66c25..09ff878d7a 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1832,7 +1832,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
# glibc-hwcaps mechanism for this architecture). Used to obtain test
# coverage for some glibc-hwcaps tests for the widest possible range
# of systems.
-glibc-hwcaps-first-subdirs-for-tests =
+glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
# The test modules are parameterized by preprocessor macros.
LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
diff --git a/elf/tst-glibc-hwcaps-cache.script b/elf/tst-glibc-hwcaps-cache.script
index 6356d15208..66d6942402 100644
--- a/elf/tst-glibc-hwcaps-cache.script
+++ b/elf/tst-glibc-hwcaps-cache.script
@@ -4,3 +4,13 @@
cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
+
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
+cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
+cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
+cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
+cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
+cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
+cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..d1d7cb9d2e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
+
+$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
+ $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)libmarkermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
+ $(objpfx)libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
+ $(objpfx)libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+ifeq (no,$(build-hardcoded-path-in-tests))
+# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
+# interferes with its test objectives.
+tests-container += tst-glibc-hwcaps-cache
endif
+endif # $(subdir) == elf
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..3075a8286d
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,76 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+#include <sys/platform/x86.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ const struct cpu_features *cpu_features
+ = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
+ && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MMX)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE2)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
+ return 1;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, F16C)
+ && CPU_FEATURE_USABLE_P (cpu_features, FMA)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
+ && CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
+ return 2;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-12-01 11:35 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-12-01 11:35 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d173115082a643a400841f962c6ddfe064f2b722
commit d173115082a643a400841f962c6ddfe064f2b722
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Dec 1 10:58:51 2020 +0100
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
elf/Makefile | 2 +-
elf/tst-glibc-hwcaps-cache.script | 10 +++++
sysdeps/x86_64/Makefile | 39 +++++++++++++++++++
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 +++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 76 ++++++++++++++++++++++++++++++++++++++
5 files changed, 192 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 95cbf66c25..09ff878d7a 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1832,7 +1832,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
# glibc-hwcaps mechanism for this architecture). Used to obtain test
# coverage for some glibc-hwcaps tests for the widest possible range
# of systems.
-glibc-hwcaps-first-subdirs-for-tests =
+glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
# The test modules are parameterized by preprocessor macros.
LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
diff --git a/elf/tst-glibc-hwcaps-cache.script b/elf/tst-glibc-hwcaps-cache.script
index 6356d15208..66d6942402 100644
--- a/elf/tst-glibc-hwcaps-cache.script
+++ b/elf/tst-glibc-hwcaps-cache.script
@@ -4,3 +4,13 @@
cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
+
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
+cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
+cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
+cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
+cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
+cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
+cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..d1d7cb9d2e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
+
+$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
+ $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)libmarkermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
+ $(objpfx)libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
+ $(objpfx)libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+ifeq (no,$(build-hardcoded-path-in-tests))
+# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
+# interferes with its test objectives.
+tests-container += tst-glibc-hwcaps-cache
endif
+endif # $(subdir) == elf
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..3075a8286d
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,76 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+#include <sys/platform/x86.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ const struct cpu_features *cpu_features
+ = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
+ && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MMX)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE2)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
+ return 1;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, F16C)
+ && CPU_FEATURE_USABLE_P (cpu_features, FMA)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
+ && CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
+ return 2;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-11-26 18:44 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-11-26 18:44 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1a6ec0656c1c2a57644369015c49e66d20256e74
commit 1a6ec0656c1c2a57644369015c49e66d20256e74
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Nov 26 16:59:44 2020 +0100
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
elf/Makefile | 2 +-
elf/tst-glibc-hwcaps-cache.script | 10 +++++
sysdeps/x86_64/Makefile | 39 +++++++++++++++++++
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 +++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 76 ++++++++++++++++++++++++++++++++++++++
5 files changed, 192 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 7e5c249a36..082e3ae489 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1828,7 +1828,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
# Most likely search subdirectories, for each supported architecture.
# Used to obtain test coverage wide test coverage.
-glibc-hwcaps-first-subdirs-for-tests =
+glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
# The test modules are parameterized by preprocessor macros.
LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
diff --git a/elf/tst-glibc-hwcaps-cache.script b/elf/tst-glibc-hwcaps-cache.script
index 6356d15208..66d6942402 100644
--- a/elf/tst-glibc-hwcaps-cache.script
+++ b/elf/tst-glibc-hwcaps-cache.script
@@ -4,3 +4,13 @@
cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
+
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
+cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
+cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
+cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
+cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
+cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
+cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..d1d7cb9d2e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
+
+$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
+ $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)libmarkermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
+ $(objpfx)libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
+ $(objpfx)libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+ifeq (no,$(build-hardcoded-path-in-tests))
+# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
+# interferes with its test objectives.
+tests-container += tst-glibc-hwcaps-cache
endif
+endif # $(subdir) == elf
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..3075a8286d
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,76 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+#include <sys/platform/x86.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ const struct cpu_features *cpu_features
+ = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
+ && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MMX)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE2)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
+ return 1;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, F16C)
+ && CPU_FEATURE_USABLE_P (cpu_features, FMA)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
+ && CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
+ return 2;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-11-26 18:11 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-11-26 18:11 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1a6ec0656c1c2a57644369015c49e66d20256e74
commit 1a6ec0656c1c2a57644369015c49e66d20256e74
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Nov 26 16:59:44 2020 +0100
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
elf/Makefile | 2 +-
elf/tst-glibc-hwcaps-cache.script | 10 +++++
sysdeps/x86_64/Makefile | 39 +++++++++++++++++++
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 +++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 76 ++++++++++++++++++++++++++++++++++++++
5 files changed, 192 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 7e5c249a36..082e3ae489 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1828,7 +1828,7 @@ $(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
# Most likely search subdirectories, for each supported architecture.
# Used to obtain test coverage wide test coverage.
-glibc-hwcaps-first-subdirs-for-tests =
+glibc-hwcaps-first-subdirs-for-tests = x86-64-v2
# The test modules are parameterized by preprocessor macros.
LDFLAGS-libmarkermod1-1.so += -Wl,-soname,libmarkermod1.so
diff --git a/elf/tst-glibc-hwcaps-cache.script b/elf/tst-glibc-hwcaps-cache.script
index 6356d15208..66d6942402 100644
--- a/elf/tst-glibc-hwcaps-cache.script
+++ b/elf/tst-glibc-hwcaps-cache.script
@@ -4,3 +4,13 @@
cp $B/elf/libmarkermod2-1.so $L/libmarkermod2.so
cp $B/elf/libmarkermod3-1.so $L/libmarkermod3.so
cp $B/elf/libmarkermod4-1.so $L/libmarkermod4.so
+
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v2
+cp $B/elf/libmarkermod2-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod2.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v3
+cp $B/elf/libmarkermod3-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod3.so
+cp $B/elf/libmarkermod3-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod3.so
+mkdirp 0770 $L/glibc-hwcaps/x86-64-v4
+cp $B/elf/libmarkermod4-2.so $L/glibc-hwcaps/x86-64-v2/libmarkermod4.so
+cp $B/elf/libmarkermod4-3.so $L/glibc-hwcaps/x86-64-v3/libmarkermod4.so
+cp $B/elf/libmarkermod4-4.so $L/glibc-hwcaps/x86-64-v4/libmarkermod4.so
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..d1d7cb9d2e 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,8 +144,47 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
+
+$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
+ $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)libmarkermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so \
+ $(objpfx)libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so \
+ $(objpfx)libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod3.so: $(objpfx)libmarkermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod3.so: $(objpfx)libmarkermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/libmarkermod4.so: $(objpfx)libmarkermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/libmarkermod4.so: $(objpfx)libmarkermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/libmarkermod4.so: $(objpfx)libmarkermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+ifeq (no,$(build-hardcoded-path-in-tests))
+# This is an ld.so.cache test, and RPATH/RUNPATH in the executable
+# interferes with its test objectives.
+tests-container += tst-glibc-hwcaps-cache
endif
+endif # $(subdir) == elf
+
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
endif
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..3075a8286d
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,76 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+#include <sys/platform/x86.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ const struct cpu_features *cpu_features
+ = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
+ && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MMX)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE2)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
+ && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)))
+ return 1;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, F16C)
+ && CPU_FEATURE_USABLE_P (cpu_features, FMA)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
+ && CPU_FEATURE_USABLE_P (cpu_features, MOVBE)
+ && CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)))
+ return 2;
+ if (!(CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support
@ 2020-10-14 15:11 Florian Weimer
0 siblings, 0 replies; 7+ messages in thread
From: Florian Weimer @ 2020-10-14 15:11 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f73175bfc11cd05ab6f4c45ec72af11f98b02922
commit f73175bfc11cd05ab6f4c45ec72af11f98b02922
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Oct 12 16:53:20 2020 +0200
x86_64: Add glibc-hwcaps support
The subdirectories match those in the x86-64 psABI:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Diff:
---
sysdeps/x86_64/Makefile | 36 ++++++++++++++++++++-
sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 ++++++++++++++++++++++++++++++++++++++
sysdeps/x86_64/tst-glibc-hwcaps.c | 65 +++++++++++++++++++++++++++++++++++++
3 files changed, 166 insertions(+), 1 deletion(-)
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 42b97c5cc7..16030715e7 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -144,7 +144,41 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
-endif
+
+$(objpfx)tst-glibc-hwcaps: \
+ $(objpfx)markermod2-1.so $(objpfx)markermod3-1.so $(objpfx)markermod4-1.so
+$(objpfx)tst-glibc-hwcaps.out: \
+ $(objpfx)markermod2.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so \
+ $(objpfx)markermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so \
+ $(objpfx)markermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so \
+ $(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so \
+
+$(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so: $(objpfx)markermod2-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so: $(objpfx)markermod3-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so: $(objpfx)markermod3-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so: $(objpfx)markermod4-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so: $(objpfx)markermod4-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so: $(objpfx)markermod4-4.so
+ $(make-target-directory)
+ cp $< $@
+
+
+endif # $(subdir) == elf
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c
new file mode 100644
index 0000000000..8810a822ef
--- /dev/null
+++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c
@@ -0,0 +1,66 @@
+/* Architecture-specific glibc-hwcaps subdirectories. x86 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 <cpu-features.h>
+
+const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2";
+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. */
+
+ /* x86-64-v2. */
+ if (!(CPU_FEATURE_USABLE (CMPXCHG16B)
+ && CPU_FEATURE_USABLE (LAHF64_SAHF64)
+ && CPU_FEATURE_USABLE (POPCNT)
+ && CPU_FEATURE_USABLE (SSE3)
+ && CPU_FEATURE_USABLE (SSE4_1)
+ && CPU_FEATURE_USABLE (SSE4_2)
+ && CPU_FEATURE_USABLE (SSSE3)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v3. */
+ if (!(CPU_FEATURE_USABLE (AVX)
+ && CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (F16C)
+ && CPU_FEATURE_USABLE (FMA)
+ && CPU_FEATURE_USABLE (LZCNT)
+ && CPU_FEATURE_USABLE (MOVBE)
+ && CPU_FEATURE_USABLE (OSXSAVE)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ /* x86-64-v4. */
+ if (!(CPU_FEATURE_USABLE (AVX512F)
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (AVX512CD)
+ && CPU_FEATURE_USABLE (AVX512DQ)
+ && CPU_FEATURE_USABLE (AVX512VL)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+}
diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c
new file mode 100644
index 0000000000..b46e7cb236
--- /dev/null
+++ b/sysdeps/x86_64/tst-glibc-hwcaps.c
@@ -0,0 +1,65 @@
+/* glibc-hwcaps subdirectory test. x86_64 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 <stdio.h>
+#include <support/check.h>
+#include <sys/param.h>
+
+extern int marker2 (void);
+extern int marker3 (void);
+extern int marker4 (void);
+
+/* Return the x86-64-vN level, 1 for the baseline. */
+static int
+compute_level (void)
+{
+ /* These checks are not entirely accurate because they are limited
+ by GCC capabilities. But wrong results will only result from
+ inconsistent CPU models involving virtualization. */
+ if (!(__builtin_cpu_supports ("sse3")
+ && __builtin_cpu_supports ("sse4.1")
+ && __builtin_cpu_supports ("sse4.2")
+ && __builtin_cpu_supports ("ssse3")))
+ return 1;
+ if (!(__builtin_cpu_supports ("avx")
+ && __builtin_cpu_supports ("avx2")
+ && __builtin_cpu_supports ("bmi")
+ && __builtin_cpu_supports ("bmi2")
+ && __builtin_cpu_supports ("fma")))
+ return 2;
+ if (!(__builtin_cpu_supports ("avx512f")
+ && __builtin_cpu_supports ("avx512bw")
+ && __builtin_cpu_supports ("avx512cd")
+ && __builtin_cpu_supports ("avx512dq")
+ && __builtin_cpu_supports ("avx512vl")))
+ return 3;
+ return 4;
+}
+
+static int
+do_test (void)
+{
+ int level = compute_level ();
+ printf ("info: detected x86-64 micro-architecture level: %d\n", level);
+ TEST_COMPARE (marker2 (), MIN (level, 2));
+ TEST_COMPARE (marker3 (), MIN (level, 3));
+ TEST_COMPARE (marker4 (), MIN (level, 4));
+ return 0;
+}
+
+#include <support/test-driver.c>
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2020-12-04 8:14 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-01 16:54 [glibc/fw/glibc-hwcaps] x86_64: Add glibc-hwcaps support Florian Weimer
2020-10-14 15:11 Florian Weimer
2020-11-26 18:11 Florian Weimer
2020-11-26 18:44 Florian Weimer
2020-12-01 11:35 Florian Weimer
2020-12-01 20:55 Florian Weimer
2020-12-04 8:14 Florian Weimer
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).