Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.asm/src/com/oracle/graal/asm/AbstractAssembler.java @ 7700:627c284671b7
Use java.nio.ByteOrder instead of our own ByteOrder enumeration
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Mon, 04 Feb 2013 07:36:35 -0800 |
parents | 5e3d1a68664e |
children | 447f9ba1962b |
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/* * 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.graal.asm; import java.nio.*; import com.oracle.graal.api.code.*; /** * The platform-independent base class for the assembler. */ public abstract class AbstractAssembler { public final TargetDescription target; public final Buffer codeBuffer; public AbstractAssembler(TargetDescription target) { this.target = target; if (target.arch.getByteOrder() == ByteOrder.BIG_ENDIAN) { 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); } public abstract void align(int modulus); public abstract void jmp(Label l); protected abstract void patchJumpTarget(int branch, int jumpTarget); /** * Emits instruction(s) that access an address specified by a given displacement from the stack * pointer in the direction that the stack grows (which is down on most architectures). * * @param disp the displacement from the stack pointer at which the stack should be accessed */ public abstract void bangStack(int disp); 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); } }