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111 lines (94 loc) · 3.73 KB
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/*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
* that is described in this document. In particular, and without limitation, these intellectual property
* rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
* more additional patents or pending patent applications in the U.S. and in other countries.
*
* U.S. Government Rights - Commercial software. Government users are subject to the Sun
* Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
* supplements.
*
* Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
* registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
* are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
* U.S. and other countries.
*
* UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
* Company, Ltd.
*/
package com.sun.max.lang;
import java.io.*;
import com.sun.max.program.*;
import com.sun.max.unsafe.*;
import com.sun.max.vm.compiler.builtin.*;
import com.sun.max.vm.value.*;
public class DataModel {
public final WordWidth wordWidth;
public final Endianness endianness;
public final int cacheAlignment;
public DataModel(WordWidth wordWidth, Endianness endianness, int cacheAlignment) {
this.wordWidth = wordWidth;
this.endianness = endianness;
this.cacheAlignment = cacheAlignment;
}
@Override
public boolean equals(Object other) {
if (!(other instanceof DataModel)) {
return false;
}
final DataModel dataModel = (DataModel) other;
return wordWidth.equals(dataModel.wordWidth) && endianness.equals(dataModel.endianness) && cacheAlignment == dataModel.cacheAlignment;
}
public byte[] toBytes(byte value) {
return endianness.toBytes(value);
}
public byte[] toBytes(boolean value) {
final byte[] result = new byte[1];
result[0] = value ? (byte) 1 : (byte) 0;
return result;
}
public byte[] toBytes(short value) {
return endianness.toBytes(value);
}
public byte[] toBytes(char value) {
final short shortValue = UnsafeCast.asShort(value);
return endianness.toBytes(shortValue);
}
public byte[] toBytes(int value) {
return endianness.toBytes(value);
}
public byte[] toBytes(float value) {
final int intValue = SpecialBuiltin.floatToInt(value);
return endianness.toBytes(intValue);
}
public byte[] toBytes(long value) {
return endianness.toBytes(value);
}
public byte[] toBytes(double value) {
final long longValue = SpecialBuiltin.doubleToLong(value);
return endianness.toBytes(longValue);
}
public byte[] toBytes(Word value) {
switch (wordWidth) {
case BITS_64:
return toBytes(value.asOffset().toLong());
case BITS_32:
return toBytes((int) value.asOffset().toLong());
case BITS_16:
return toBytes((short) value.asOffset().toLong());
case BITS_8:
return toBytes((byte) value.asOffset().toLong());
}
ProgramError.unknownCase();
return null;
}
public void write(OutputStream stream, Value value) throws IOException {
stream.write(value.toBytes(this));
}
@Override
public String toString() {
return wordWidth + "-bit, " + endianness + " endian, " + cacheAlignment + "-byte aligned cache";
}
}