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>
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);
+    }
+}