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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 <cassert>
#include "arch/vtophys.hh"
#include "base/refcnt.hh"
#include "base/types.hh"
#include "mem/vport.hh"
class ThreadContext;
class Arguments
{
protected:
ThreadContext *tc;
int number;
uint64_t getArg(uint8_t size, 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(TheISA::MachineBytes) == 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(sizeof(T)));
return data;
}
template <class T>
operator T *() {
T *buf = (T *)data->alloc(sizeof(T));
CopyData(tc, buf, getArg(sizeof(T)), sizeof(T));
return buf;
}
operator char *() {
char *buf = data->alloc(2048);
CopyStringOut(tc, buf, getArg(TheISA::MachineBytes), 2048);
return buf;
}
};
#endif // __SIM_ARGUMENTS_HH__
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