Mercurial > hg > truffle
diff graal/com.oracle.max.asmdis/src/com/sun/max/asm/AddressLiteral.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/AddressLiteral.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2007, 2011, 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 com.sun.max.asm; + +import com.sun.max.lang.*; + +/** + * Represents a position assembled as an absolute address. + */ +public class AddressLiteral extends MutableAssembledObject { + + protected AddressLiteral(Assembler assembler, int startPosition, int endPosition, Label label) { + super(assembler, startPosition, endPosition); + assembler.addFixedSizeAssembledObject(this); + this.label = label; + } + + private final Label label; + + @Override + protected final void assemble() throws AssemblyException { + final Assembler assembler = assembler(); + final WordWidth wordWidth = assembler.wordWidth(); + if (wordWidth == WordWidth.BITS_64) { + assembler.emitLong(assembler.baseAddress() + label.position()); + } else if (wordWidth == WordWidth.BITS_32) { + assembler.emitInt((int) (assembler.baseAddress() + label.position())); + } else if (wordWidth == WordWidth.BITS_16) { + assembler.emitShort((short) (assembler.baseAddress() + label.position())); + } else { + assert wordWidth == WordWidth.BITS_8; + assembler.emitByte((byte) (assembler.baseAddress() + label.position())); + } + } + + public final boolean isCode() { + return false; + } +}