arguments.cc revision 2680 
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#include "arch/alpha/arguments.hh"
32#include "arch/alpha/vtophys.hh"
33#include "cpu/thread_context.hh"
34#include "mem/vport.hh"
35
36using namespace AlphaISA;
37
38AlphaArguments::Data::~Data()
39{
40    while (!data.empty()) {
41        delete [] data.front();
42        data.pop_front();
43    }
44}
45
46char *
47AlphaArguments::Data::alloc(size_t size)
48{
49    char *buf = new char[size];
50    data.push_back(buf);
51    return buf;
52}
53
54uint64_t
55AlphaArguments::getArg(bool fp)
56{
57    if (number < 6) {
58        if (fp)
59            return tc->readFloatRegBits(16 + number);
60        else
61            return tc->readIntReg(16 + number);
62    } else {
63        Addr sp = tc->readIntReg(30);
64        VirtualPort *vp = tc->getVirtPort(tc);
65        uint64_t arg = vp->read<uint64_t>(sp + (number-6) * sizeof(uint64_t));
66        tc->delVirtPort(vp);
67        return arg;
68    }
69}
70
71