Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SethiDecoder.java @ 3945:8ed53447f690
Merge
author | iveresov |
---|---|
date | Thu, 15 Sep 2011 12:44:09 -0700 |
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 SethiDecoder extends InstructionDecoder { Instruction decode(int instruction, SPARCInstructionFactory factory) { Instruction instr = null; int rdNum = getDestinationRegister(instruction); SPARCRegister rd = SPARCRegisters.getRegister(rdNum); int imm22 = (instruction & DISP_22_MASK); if (imm22 == 0 && rd == SPARCRegisters.G0) { instr = factory.newNoopInstruction(); } else { instr = factory.newSethiInstruction(imm22, rd); } return instr; } }