From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- .../roms/ipxe/src/arch/i386/include/bits/profile.h | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 qemu/roms/ipxe/src/arch/i386/include/bits/profile.h (limited to 'qemu/roms/ipxe/src/arch/i386/include/bits/profile.h') diff --git a/qemu/roms/ipxe/src/arch/i386/include/bits/profile.h b/qemu/roms/ipxe/src/arch/i386/include/bits/profile.h new file mode 100644 index 000000000..f3ee54ae9 --- /dev/null +++ b/qemu/roms/ipxe/src/arch/i386/include/bits/profile.h @@ -0,0 +1,28 @@ +#ifndef _BITS_PROFILE_H +#define _BITS_PROFILE_H + +/** @file + * + * Profiling + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include + +/** + * Get profiling timestamp + * + * @ret timestamp Timestamp + */ +static inline __attribute__ (( always_inline )) uint64_t +profile_timestamp ( void ) { + uint64_t tsc; + + /* Read timestamp counter */ + __asm__ __volatile__ ( "rdtsc" : "=A" ( tsc ) ); + return tsc; +} + +#endif /* _BITS_PROFILE_H */ -- cgit 1.2.3-korg