--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotRegisterConfig.java	Wed Jun 23 16:36:58 2010 +0200
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2009 Sun Microsystems, Inc.  All rights reserved.
+ *
+ * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
+ * that is described in this document. In particular, and without limitation, these intellectual property
+ * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
+ * more additional patents or pending patent applications in the U.S. and in other countries.
+ *
+ * U.S. Government Rights - Commercial software. Government users are subject to the Sun
+ * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
+ * supplements.
+ *
+ * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
+ * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
+ * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
+ * U.S. and other countries.
+ *
+ * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
+ * Company, Ltd.
+ */
+package com.sun.hotspot.c1x;
+
+import com.sun.c1x.target.amd64.AMD64;
+import com.sun.c1x.util.Util;
+import com.sun.cri.ci.CiCallingConvention;
+import com.sun.cri.ci.CiKind;
+import com.sun.cri.ci.CiRegister;
+import com.sun.cri.ci.CiStackSlot;
+import com.sun.cri.ci.CiTarget;
+import com.sun.cri.ci.CiValue;
+import com.sun.cri.ri.RiRegisterConfig;
+
+/**
+ * @author Thomas Wuerthinger
+ *
+ */
+public class HotSpotRegisterConfig implements RiRegisterConfig {
+
+	@Override
+	public CiRegister[] getAllocatableRegisters() {
+		return new CiRegister[]{ AMD64.rax, AMD64.rbx, AMD64.rcx, AMD64.rdx, AMD64.rsi, AMD64.rdi, AMD64.r10, AMD64.r11} ;
+	}
+	
+
+    private final CiRegister[] generalParameterRegisters = new CiRegister[]{AMD64.rdx, AMD64.r8, AMD64.r9, AMD64.rdi, AMD64.rsi, AMD64.rcx};
+    private final CiRegister[] xmmParameterRegisters = new CiRegister[]{AMD64.xmm0, AMD64.xmm1, AMD64.xmm2, AMD64.xmm3, AMD64.xmm4, AMD64.xmm5, AMD64.xmm6, AMD64.xmm7};
+
+	@Override
+	public int getCalleeSaveRegisterOffset(CiRegister register) {
+		return 0;
+	}
+
+	@Override
+	public CiRegister[] getCallerSaveRegisters() {
+		return getAllocatableRegisters();
+	}
+
+	@Override
+	public CiRegister getFramePointerRegister() {
+		return AMD64.rbp;
+	}
+
+	@Override
+	public CiRegister getIntegerRegister(int index) {
+		throw new UnsupportedOperationException();
+	}
+	
+	@Override
+	public CiCallingConvention getJavaCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
+		return callingConvention(parameters, outgoing, target);
+	}
+
+    private CiCallingConvention callingConvention(CiKind[] types, boolean outgoing, CiTarget target) {
+        CiValue[] locations = new CiValue[types.length];
+
+        int currentGeneral = 0;
+        int currentXMM = 0;
+        int currentStackIndex = 0;
+
+        for (int i = 0; i < types.length; i++) {
+            final CiKind kind = types[i];
+
+            switch (kind) {
+                case Byte:
+                case Boolean:
+                case Short:
+                case Char:
+                case Int:
+                case Long:
+                case Word:
+                case Object:
+                    if (currentGeneral < generalParameterRegisters.length) {
+                        CiRegister register = generalParameterRegisters[currentGeneral++];
+                        locations[i] = register.asValue(kind);
+                    }
+                    break;
+
+                case Float:
+                case Double:
+                    if (currentXMM < xmmParameterRegisters.length) {
+                        CiRegister register = xmmParameterRegisters[currentXMM++];
+                        locations[i] = register.asValue(kind);
+                    }
+                    break;
+
+                default:
+                    throw Util.shouldNotReachHere();
+            }
+
+            if (locations[i] == null) {
+                locations[i] = CiStackSlot.get(kind.stackKind(), currentStackIndex, !outgoing);
+                currentStackIndex += target.spillSlots(kind);
+            }
+        }
+
+        return new CiCallingConvention(locations, currentStackIndex * target.spillSlotSize);
+    }
+
+	@Override
+	public int getMinimumCalleeSaveFrameSize() {
+		return 0;
+	}
+
+	@Override
+	public CiCallingConvention getNativeCallingConvention(CiKind[] parameters, boolean outgoing, CiTarget target) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public CiRegister[] getRegisterReferenceMapOrder() {
+		return getAllocatableRegisters();
+	}
+
+	@Override
+	public CiRegister getReturnRegister(CiKind kind) {
+		return AMD64.rax;
+	}
+
+	@Override
+	public CiCallingConvention getRuntimeCallingConvention(CiKind[] parameters, CiTarget target) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public CiRegister getSafepointRegister() {
+		return AMD64.r13;
+	}
+
+	@Override
+	public CiRegister getScratchRegister() {
+		return AMD64.r15;
+	}
+
+	@Override
+	public CiRegister getStackPointerRegister() {
+		return AMD64.rsp;
+	}
+
+	@Override
+	public CiRegister getThreadRegister() {
+		return AMD64.r14;
+	}
+
+}