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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.*;
public class SPARCArithmeticInstruction extends SPARCFormat3AInstruction
implements ArithmeticInstruction {
final private int operation;
public SPARCArithmeticInstruction(String name, int opcode, int operation, SPARCRegister rs1,
ImmediateOrRegister operand2, SPARCRegister rd) {
super(name, opcode, rs1, operand2, rd);
this.operation = operation;
}
protected String getDescription() {
if (rd == rs1 && operand2.isImmediate()) {
int value = ((Immediate)operand2).getNumber().intValue();
StringBuffer buf = new StringBuffer();
switch (opcode) {
case ADD:
buf.append("inc");
break;
case ADDcc:
buf.append("inccc");
break;
case SUB:
buf.append("dec");
break;
case SUBcc:
buf.append("deccc");
break;
default:
return super.getDescription();
}
buf.append(spaces);
if (value != 1) {
buf.append(getOperand2String()); buf.append(comma);
}
buf.append(rd.toString());
return buf.toString();
} else if (rd == SPARCRegisters.G0 && opcode == SUBcc) {
StringBuffer buf = new StringBuffer();
buf.append("cmp");
buf.append(spaces);
buf.append(rs1.toString());
buf.append(comma);
buf.append(getOperand2String());
return buf.toString();
} else if (rs1 == SPARCRegisters.G0 && opcode == SUB && operand2.isRegister()) {
StringBuffer buf = new StringBuffer();
buf.append("neg");
buf.append(spaces);
buf.append(operand2.toString());
if (operand2 != rd) {
buf.append(comma);
buf.append(rd.toString());
}
return buf.toString();
}
return super.getDescription();
}
public Operand getArithmeticDestination() {
return getDestinationRegister();
}
public Operand[] getArithmeticSources() {
return (new Operand[] { rs1, operand2 });
}
public int getOperation() {
return operation;
}
public boolean isArithmetic() {
return true;
}
}
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