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view agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCStoreInstruction.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c18cbe5936b8 |
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/* * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.asm.sparc; import sun.jvm.hotspot.asm.*; public class SPARCStoreInstruction extends SPARCMemoryInstruction implements StoreInstruction { final protected SPARCRegister register2; // used by double word store instructions final protected Register[] storeSources; public SPARCStoreInstruction(String name, int opcode, SPARCRegisterIndirectAddress address, SPARCRegister register, int dataType) { super(name, opcode, address, register, dataType); if (opcode == STD || opcode == STDA) { storeSources = new Register[2]; storeSources[0] = register; int nextRegNum = (register.getNumber() + 1) % SPARCRegisters.NUM_REGISTERS; register2 = SPARCRegisters.getRegister(nextRegNum); storeSources[1] = register2; } else { storeSources = new Register[1]; storeSources[0] = register; register2 = null; } } private String defaultInitDescription(StringBuffer buf) { buf.append(getName()); buf.append(spaces); buf.append(register.toString()); buf.append(comma); buf.append(address.toString()); return buf.toString(); } protected String getDescription() { StringBuffer buf = new StringBuffer(); if (register == SPARCRegisters.G0) { switch (opcode) { case ST: buf.append("clr"); break; case STH: buf.append("clrh"); break; case STB: buf.append("clrb"); break; default: return defaultInitDescription(buf); } buf.append(spaces); buf.append(address.toString()); return buf.toString(); } else { return defaultInitDescription(buf); } } public int getDataType() { return dataType; } public Address getStoreDestination() { return address; } public Register[] getStoreSources() { return storeSources; } public boolean isStore() { return true; } }