Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.max.asm/src/com/oracle/max/asm/AbstractAssembler.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 |
parents | |
children | bc8527f3071c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.asm/src/com/oracle/max/asm/AbstractAssembler.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2009, 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.oracle.max.asm; + +import com.sun.cri.ci.*; +import com.sun.cri.ci.CiArchitecture.*; + +/** + * The platform-independent base class for the assembler. + */ +public abstract class AbstractAssembler { + public final CiTarget target; + public final Buffer codeBuffer; + + public AbstractAssembler(CiTarget target) { + this.target = target; + + if (target.arch.byteOrder == ByteOrder.BigEndian) { + this.codeBuffer = new Buffer.BigEndian(); + } else { + this.codeBuffer = new Buffer.LittleEndian(); + } + } + + public final void bind(Label l) { + assert !l.isBound() : "can bind label only once"; + l.bind(codeBuffer.position()); + l.patchInstructions(this); + } + + protected abstract void patchJumpTarget(int branch, int target); + + protected final void emitByte(int x) { + codeBuffer.emitByte(x); + } + + protected final void emitShort(int x) { + codeBuffer.emitShort(x); + } + + protected final void emitInt(int x) { + codeBuffer.emitInt(x); + } + + protected final void emitLong(long x) { + codeBuffer.emitLong(x); + } +}