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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/i586 | |
| parent | c2b7ccad93d6361eba91755e8f0c92e97c76e854 (diff) | |
| download | glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.gz glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.xz glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.zip | |
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/i586')
| -rw-r--r-- | sysdeps/i386/i586/isa.h (renamed from sysdeps/i386/i586/init-arch.h) | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/i386/i586/init-arch.h b/sysdeps/i386/i586/isa.h index 72fb46c61e..79481ce680 100644 --- a/sysdeps/i386/i586/init-arch.h +++ b/sysdeps/i386/i586/isa.h @@ -1,4 +1,5 @@ -/* Copyright (C) 2015-2018 Free Software Foundation, Inc. +/* x86 ISA info. i586 version. + Copyright (C) 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 @@ -15,5 +16,9 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#ifndef _ISA_H +#define _ISA_H + #define MINIMUM_ISA 586 -#include <sysdeps/x86/init-arch.h> + +#endif |