1668N/A * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1472N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 0N/A// Instead of issuing lfence for LoadLoad barrier, we create data dependency 0N/A// between loads, which is more efficient than lfence. 0N/A// Common register usage: 0N/A// c_rarg2: jfield id 0N/A// Warning: do not use rip relative addressing after the first counter load 0N/A// since that may scratch r10! 0N/A // robj ^ rcounter ^ rcounter == robj 0N/A // robj is data dependent on rcounter. 0N/A // ca is data dependent on rax. 0N/A // robj ^ rcounter ^ rcounter == robj 0N/A // robj is data dependent on rcounter. 0N/A // counter address is data dependent on xmm0.