/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef OS_CPU_BSD_X86_VM_OS_BSD_X86_INLINE_HPP
#define OS_CPU_BSD_X86_VM_OS_BSD_X86_INLINE_HPP
#include "runtime/os.hpp"
// See http://www.technovelty.org/code/c/reading-rdtsc.htl for details
inline jlong os::rdtsc() {
#ifndef AMD64
// 64 bit result in edx:eax
uint64_t res;
__asm__ __volatile__ ("rdtsc" : "=A" (res));
return (jlong)res;
#else
uint64_t res;
uint32_t ts1, ts2;
__asm__ __volatile__ ("rdtsc" : "=a" (ts1), "=d" (ts2));
res = ((uint64_t)ts1 | (uint64_t)ts2 << 32);
return (jlong)res;
#endif // AMD64
}
#endif // OS_CPU_BSD_X86_VM_OS_BSD_X86_INLINE_HPP