Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/asm/x86/MoveDecoder.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/asm/x86/MoveDecoder.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,54 @@ +/* + * Copyright 2002-2003 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.x86; + +import sun.jvm.hotspot.asm.*; + +public class MoveDecoder extends InstructionDecoder { + public MoveDecoder(String name, int addrMode1, int operandType1, int addrMode2, int operandType2) { + super(name, addrMode1, operandType1, addrMode2, operandType2); + } + + protected Instruction decodeInstruction(byte[] bytesArray, boolean operandSize, boolean addrSize, X86InstructionFactory factory) { + Operand op1 = getOperand1(bytesArray, operandSize, addrSize); + Operand op2 = getOperand2(bytesArray, operandSize, addrSize); + int size = byteIndex - instrStartIndex; + + if( (op1 instanceof X86Register) && (op2 instanceof ImmediateOrRegister) ) { + return factory.newMoveInstruction(name, (X86Register)op1, (ImmediateOrRegister)op2, size, prefixes); + } + else if( (op1 instanceof Address) && (op2 instanceof Immediate) ) { + return factory.newGeneralInstruction(name, op1, op2, size, prefixes); + } + else if( (op1 instanceof Address) && (op2 instanceof X86Register) ) { + return factory.newMoveStoreInstruction(name, (Address)op1, (X86Register)op2, 0, size, prefixes); + } + else if( (op1 instanceof X86Register) && (op2 instanceof Address) ) { + return factory.newMoveLoadInstruction(name, (X86Register)op1, (Address)op2, 0, size, prefixes); + } + + return null; + } +}