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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2018-12-27 19:23:01 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2018-12-27 19:23:01 +0000
commit519f6620457d9f84d0125c0c7d01abebaae8efaa (patch)
tree28e2b20214b72aa7a633a5910dba7d2388620a78 /elf/dl-hwcaps.h
parent74f331b3ccf81cf9404be03e62bde9efcc0878c2 (diff)
parent68e2fa8ed9dbf0edfdaed0310801e764c12af46e (diff)
Merge commit 'refs/top-bases/t/libc_cleanup' into t/libc_cleanup
Diffstat (limited to 'elf/dl-hwcaps.h')
-rw-r--r--elf/dl-hwcaps.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/elf/dl-hwcaps.h b/elf/dl-hwcaps.h
new file mode 100644
index 0000000000..17f0da4c73
--- /dev/null
+++ b/elf/dl-hwcaps.h
@@ -0,0 +1,30 @@
+/* Hardware capability support for run-time dynamic loader.
+ Copyright (C) 2017-2018 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <elf/dl-tunables.h>
+
+#if HAVE_TUNABLES
+# define GET_HWCAP_MASK() TUNABLE_GET (glibc, tune, hwcap_mask, uint64_t, NULL)
+#else
+# ifdef SHARED
+# define GET_HWCAP_MASK() GLRO(dl_hwcap_mask)
+# else
+/* HWCAP_MASK is ignored in static binaries when built without tunables. */
+# define GET_HWCAP_MASK() (0)
+# endif
+#endif