Mercurial > hg > truffle
diff graal/com.oracle.max.asmdis/src/com/sun/max/asm/MutableAssembledObject.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/MutableAssembledObject.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,78 @@ +/* + * 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; + +/** + * An assembled object whose position and size may change. + * Examples include span-dependent jump instructions to labels and padding bytes for memory alignment. + */ +public abstract class MutableAssembledObject extends AssembledObject { + + protected abstract void assemble() throws AssemblyException; + + private final Assembler assembler; + private int variablePosition; + protected int variableSize; + + protected MutableAssembledObject(Assembler assembler, int startPosition, int endPosition) { + super(startPosition, endPosition); + this.assembler = assembler; + this.variablePosition = startPosition; + this.variableSize = endPosition - startPosition; + } + + protected Assembler assembler() { + return assembler; + } + + public final int initialStartPosition() { + return super.startPosition(); + } + + public final int initialEndPosition() { + return super.endPosition(); + } + + public final int initialSize() { + return super.size(); + } + + public void adjust(int delta) { + variablePosition += delta; + } + + @Override + public int startPosition() { + return variablePosition; + } + + @Override + public int endPosition() { + return variablePosition + variableSize; + } + + @Override + public int size() { + return variableSize; + } +}