--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.asm/src/com/oracle/max/asm/AbstractAssembler.java	Wed Oct 03 17:42:12 2012 +0200
@@ -0,0 +1,80 @@
+/*
+ * 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.oracle.graal.api.code.*;
+import com.oracle.graal.api.code.Architecture.*;
+
+/**
+ * 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.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);
+    }
+
+    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);
+    }
+}