Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/asm/sparc/ReadDecoder.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
---|---|
date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 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. * */ package sun.jvm.hotspot.asm.sparc; import sun.jvm.hotspot.asm.*; class ReadDecoder extends ReadWriteDecoder { ReadDecoder(int specialRegNum) { super(specialRegNum); } Instruction decodeReadWrite(int instruction, SPARCInstructionFactory factory, int rs1Num, int rdNum) { Instruction instr = null; int specialReg = specialRegNum; if (rs1Num == 0) specialReg = SPARCSpecialRegisters.Y; if (rs1Num == 15 && rdNum == 0) { instr = factory.newStbarInstruction(); } else { instr = factory.newReadInstruction(specialReg, rs1Num, SPARCRegisters.getRegister(rdNum)); } return instr; } }