--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCArgument.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2000-2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.asm.sparc;
+
+import sun.jvm.hotspot.asm.*;
+import sun.jvm.hotspot.utilities.*;
+
+/** SPARCArgument is an abstraction used to represent an outgoing
+    actual argument or an incoming formal parameter, whether it
+    resides in memory or in a register, in a manner consistent with
+    the SPARC Application Binary Interface, or ABI.  This is often
+    referred to as the native or C calling convention. */
+
+public class SPARCArgument {
+  private int     number;
+  private boolean isIn;
+
+  // FIXME: add 64-bit stuff here (support for FP registers)
+
+  /** Only 6 registers may contain integer parameters */
+  public static final int NUM_REGISTER_PARAMETERS = 6;
+
+  public SPARCArgument(int number, boolean isIn) {
+    this.number = number;
+    this.isIn   = isIn;
+  }
+
+  int     getNumber() { return number;     }
+  boolean getIsIn()   { return isIn;       }
+  boolean getIsOut()  { return !getIsIn(); }
+
+  public SPARCArgument getSuccessor() { return new SPARCArgument(getNumber() + 1, getIsIn()); }
+  public SPARCArgument asIn()         { return new SPARCArgument(getNumber(),     true);      }
+  public SPARCArgument asOut()        { return new SPARCArgument(getNumber(),     false);     }
+
+  /** Locating register-based arguments */
+  public boolean isRegister()         { return number < NUM_REGISTER_PARAMETERS; }
+
+  public SPARCRegister asRegister() {
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(isRegister(), "must be a register argument");
+    }
+    return new SPARCRegister(getIsIn() ? SPARCRegisterType.IN : SPARCRegisterType.OUT, getNumber());
+  }
+
+  // locating memory-based arguments (FIXME: elided for now, will
+  // necessitate creating new SPARCAddress class)
+  //  public SPARCAddress asAddress() {
+  //    if (Assert.ASSERTS_ENABLED) {
+  //      Assert.that(!isRegister(), "must be a memory argument");
+  //    }
+  //    return addressInFrame();
+  //  }
+  //
+  //  /** When applied to a register-based argument, give the corresponding address
+  //      into the 6-word area "into which callee may store register arguments"
+  //      (This is a different place than the corresponding register-save area location.)  */
+  //  public SPARCAddress addressInFrame() const {
+  //    return SPARCAddress( is_in()   ? Address::extra_in_argument
+  //                          : Address::extra_out_argument,
+  //                _number );
+  //  }
+}