arguments.hh revision 74 
1/*
2 * Copyright (c) 2003 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
29#ifndef __ARGUMENTS_HH__
30#define __ARGUMENTS_HH__
31
32#include <assert.h>
33
34#include "base/refcnt.hh"
35#include "kern/tru64/kernel.hh"
36#include "sim/host.hh"
37#include "targetarch/vtophys.hh"
38
39class ExecContext;
40
41class AlphaArguments
42{
43  protected:
44    ExecContext *xc;
45    int number;
46    uint64_t getArg(bool fp = false);
47
48  protected:
49    class Data : public RefCounted
50    {
51      public:
52        Data(){}
53        ~Data();
54
55      private:
56        std::list<char *> data;
57
58      public:
59        char *alloc(size_t size);
60    };
61
62    RefCountingPtr<Data> data;
63
64  public:
65    AlphaArguments(ExecContext *ctx, int n = 0)
66        : xc(ctx), number(n), data(NULL)
67        { assert(number >= 0); data = new Data;}
68    AlphaArguments(const AlphaArguments &args)
69        : xc(args.xc), number(args.number), data(args.data) {}
70    ~AlphaArguments() {}
71
72    ExecContext *getExecContext() const { return xc; }
73
74    const AlphaArguments &operator=(const AlphaArguments &args) {
75        xc = args.xc;
76        number = args.number;
77        data = args.data;
78        return *this;
79    }
80
81    AlphaArguments &operator++() {
82        ++number;
83        assert(number >= 0);
84        return *this;
85    }
86
87    AlphaArguments operator++(int) {
88        AlphaArguments args = *this;
89        ++number;
90        assert(number >= 0);
91        return args;
92    }
93
94    AlphaArguments &operator--() {
95        --number;
96        assert(number >= 0);
97        return *this;
98    }
99
100    AlphaArguments operator--(int) {
101        AlphaArguments args = *this;
102        --number;
103        assert(number >= 0);
104        return args;
105    }
106
107    const AlphaArguments &operator+=(int index) {
108        number += index;
109        assert(number >= 0);
110        return *this;
111    }
112
113    const AlphaArguments &operator-=(int index) {
114        number -= index;
115        assert(number >= 0);
116        return *this;
117    }
118
119    AlphaArguments operator[](int index) {
120        return AlphaArguments(xc, index);
121    }
122
123    template <class T>
124    operator T() {
125        assert(sizeof(T) <= sizeof(uint64_t));
126        T data = static_cast<T>(getArg());
127        return data;
128    }
129
130    template <class T>
131    operator T *() {
132        T *buf = (T *)data->alloc(sizeof(T));
133        CopyData(xc, buf, getArg(), sizeof(T));
134        return buf;
135    }
136
137    operator char *() {
138        char *buf = data->alloc(2048);
139        CopyString(xc, buf, getArg(), 2048);
140        return buf;
141    }
142};
143
144#endif // __ARGUMENTS_HH__
145