--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiCallingConvention.java	Tue Jan 03 16:29:28 2012 +0100
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2009, 2012, 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.cri.ci;
+
+import static com.oracle.max.cri.ci.CiValueUtil.*;
+
+import com.oracle.max.cri.ri.*;
+
+
+/**
+ * A calling convention describes the locations in which the arguments for a call are placed.
+ */
+public class CiCallingConvention {
+
+    /**
+     * Constants denoting the type of a call for which a calling convention is
+     * {@linkplain RiRegisterConfig#getCallingConvention(Type, CiKind[], CiTarget, boolean) requested}.
+     */
+    public enum Type {
+        /**
+         * A request for the outgoing argument locations at a call site to Java code.
+         */
+        JavaCall(true),
+
+        /**
+         * A request for the incoming argument locations.
+         */
+        JavaCallee(false),
+
+        /**
+         * A request for the outgoing argument locations at a call site to the runtime (which may be Java or native code).
+         */
+        RuntimeCall(true),
+
+        /**
+         * A request for the outgoing argument locations at a call site to
+         * external native code that complies with the platform ABI.
+         */
+        NativeCall(true);
+
+        /**
+         * Determines if this is a request for the outgoing argument locations at a call site.
+         */
+        public final boolean out;
+
+        public static final Type[] VALUES = values();
+
+        private Type(boolean out) {
+            this.out = out;
+        }
+    }
+
+    /**
+     * The amount of stack space (in bytes) required for the stack-based arguments of the call.
+     */
+    public final int stackSize;
+
+    /**
+     * The locations in which the arguments are placed. This array ordered by argument index.
+     */
+    public final CiValue[] locations;
+
+    public CiCallingConvention(CiValue[] locations, int stackSize) {
+        this.locations = locations;
+        this.stackSize = stackSize;
+        assert verify();
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder result = new StringBuilder();
+        result.append("CallingConvention[");
+        for (CiValue op : locations) {
+            result.append(op.toString()).append(" ");
+        }
+        result.append("]");
+        return result.toString();
+    }
+
+    private boolean verify() {
+        for (int i = 0; i < locations.length; i++) {
+            CiValue location = locations[i];
+            assert isStackSlot(location) || isRegister(location);
+        }
+        return true;
+    }
+}