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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-10-17 15:16:38 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-10-17 15:16:45 -0700 |
| commit | 72771e53753647111d31c5c4bf43d8901e6baf7e (patch) | |
| tree | 66c4a0605d4624372f8e6742bf0c417ceaba8d43 /sysdeps/i386/init-arch.h | |
| parent | c2b7ccad93d6361eba91755e8f0c92e97c76e854 (diff) | |
| download | glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.zip glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.gz glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.bz2 | |
x86: Use _rdtsc intrinsic for HP_TIMING_NOW
Since _rdtsc intrinsic is supported in GCC 4.9, we can use it for
HP_TIMING_NOW. This patch
1. Create x86 hp-timing.h to replace i686 and x86_64 hp-timing.h.
2. Move MINIMUM_ISA from init-arch.h to isa.h so that x86 hp-timing.h
can check minimum x86 ISA to decide if _rdtsc can be used.
NB: Checking if __i686__ isn't sufficient since __i686__ may not be
defined when building for i686 class processors.
* sysdeps/i386/init-arch.h: Removed.
* sysdeps/i386/i586/init-arch.h: Likewise.
* sysdeps/i386/i686/init-arch.h: Likewise.
* sysdeps/i386/i686/hp-timing.h: Likewise.
* sysdeps/x86_64/hp-timing.h: Likewise.
* sysdeps/i386/isa.h: New file.
* sysdeps/i386/i586/isa.h: Likewise.
* sysdeps/i386/i686/isa.h: Likewise.
* sysdeps/x86_64/isa.h: Likewise.
* sysdeps/x86/hp-timing.h: New file.
* sysdeps/x86/init-arch.h: Include <isa.h>.
Diffstat (limited to 'sysdeps/i386/init-arch.h')
| -rw-r--r-- | sysdeps/i386/init-arch.h | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/sysdeps/i386/init-arch.h b/sysdeps/i386/init-arch.h deleted file mode 100644 index 043089c..0000000 --- a/sysdeps/i386/init-arch.h +++ /dev/null @@ -1,19 +0,0 @@ -/* Copyright (C) 2015-2018 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/>. */ - -#define MINIMUM_ISA 486 -#include <sysdeps/x86/init-arch.h> |