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diff --git a/src/arch/sparc/utility.cc b/src/arch/sparc/utility.cc
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+/*
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ *          Ali Saidi
+ */
+
+#include "arch/sparc/utility.hh"
+#if FULL_SYSTEM
+#include "arch/sparc/vtophys.hh"
+#include "mem/vport.hh"
+#endif
+
+namespace SparcISA {
+
+
+//The caller uses %o0-%05 for the first 6 arguments even if their floating
+//point. Double precision floating point values take two registers/args.
+//Quads, structs, and unions are passed as pointers. All arguments beyond
+//the sixth are passed on the stack past the 16 word window save area,
+//space for the struct/union return pointer, and space reserved for the
+//first 6 arguments which the caller may use but doesn't have to.
+uint64_t getArgument(ThreadContext *tc, int number, bool fp) {
+#if FULL_SYSTEM
+    if (number < NumArgumentRegs) {
+        return tc->readIntReg(ArgumentReg[number]);
+    } else {
+        Addr sp = tc->readIntReg(StackPointerReg);
+        VirtualPort *vp = tc->getVirtPort(tc);
+        uint64_t arg = vp->read<uint64_t>(sp + 92 +
+                            (number-NumArgumentRegs) * sizeof(uint64_t));
+        tc->delVirtPort(vp);
+        return arg;
+    }
+#else
+    panic("getArgument() only implemented for FULL_SYSTEM\n");
+    M5_DUMMY_RETURN
+#endif
+}
+} //namespace SPARC_ISA