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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: Nathan Binkert
+ */
+
+#ifndef __SIM_ARGUMENTS_HH__
+#define __SIM_ARGUMENTS_HH__
+
+#include <assert.h>
+
+#include "arch/vtophys.hh"
+#include "base/refcnt.hh"
+#include "mem/vport.hh"
+#include "sim/host.hh"
+
+class ThreadContext;
+
+class Arguments
+{
+ protected:
+ ThreadContext *tc;
+ int number;
+ uint64_t getArg(bool fp = false);
+
+ protected:
+ class Data : public RefCounted
+ {
+ public:
+ Data(){}
+ ~Data();
+
+ private:
+ std::list<char *> data;
+
+ public:
+ char *alloc(size_t size);
+ };
+
+ RefCountingPtr<Data> data;
+
+ public:
+ Arguments(ThreadContext *ctx, int n = 0)
+ : tc(ctx), number(n), data(NULL)
+ { assert(number >= 0); data = new Data;}
+ Arguments(const Arguments &args)
+ : tc(args.tc), number(args.number), data(args.data) {}
+ ~Arguments() {}
+
+ ThreadContext *getThreadContext() const { return tc; }
+
+ const Arguments &operator=(const Arguments &args) {
+ tc = args.tc;
+ number = args.number;
+ data = args.data;
+ return *this;
+ }
+
+ // for checking if an argument is NULL
+ bool operator!() {
+ return getArg() == 0;
+ }
+
+ Arguments &operator++() {
+ ++number;
+ assert(number >= 0);
+ return *this;
+ }
+
+ Arguments operator++(int) {
+ Arguments args = *this;
+ ++number;
+ assert(number >= 0);
+ return args;
+ }
+
+ Arguments &operator--() {
+ --number;
+ assert(number >= 0);
+ return *this;
+ }
+
+ Arguments operator--(int) {
+ Arguments args = *this;
+ --number;
+ assert(number >= 0);
+ return args;
+ }
+
+ const Arguments &operator+=(int index) {
+ number += index;
+ assert(number >= 0);
+ return *this;
+ }
+
+ const Arguments &operator-=(int index) {
+ number -= index;
+ assert(number >= 0);
+ return *this;
+ }
+
+ Arguments operator[](int index) {
+ return Arguments(tc, index);
+ }
+
+ template <class T>
+ operator T() {
+ assert(sizeof(T) <= sizeof(uint64_t));
+ T data = static_cast<T>(getArg());
+ return data;
+ }
+
+ template <class T>
+ operator T *() {
+ T *buf = (T *)data->alloc(sizeof(T));
+ CopyData(tc, buf, getArg(), sizeof(T));
+ return buf;
+ }
+
+ operator char *() {
+ char *buf = data->alloc(2048);
+ CopyStringOut(tc, buf, getArg(), 2048);
+ return buf;
+ }
+};
+
+#endif // __SIM_ARGUMENTS_HH__