interrupts.hh revision 3537 
1/*
2 * Copyright (c) 2006 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: Gabe Black
29 */
30
31#ifndef __ARCH_SPARC_INTERRUPT_HH__
32#define __ARCH_SPARC_INTERRUPT_HH__
33
34#include "arch/sparc/faults.hh"
35
36namespace SparcISA
37{
38    class Interrupts
39    {
40      protected:
41        Fault interrupts[NumInterruptLevels];
42        bool requested[NumInterruptLevels];
43
44      public:
45        Interrupts()
46        {
47            for(int x = 0; x < NumInterruptLevels; x++)
48            {
49                interrupts[x] = new InterruptLevelN(x);
50                requested[x] = false;
51            }
52        }
53        void post(int int_num, int index)
54        {
55            if(int_num < 0 || int_num >= NumInterruptLevels)
56                panic("int_num out of bounds\n");
57
58            requested[int_num] = true;
59        }
60
61        void clear(int int_num, int index)
62        {
63            requested[int_num] = false;
64        }
65
66        void clear_all()
67        {
68            for(int x = 0; x < NumInterruptLevels; x++)
69                requested[x] = false;
70        }
71
72        bool check_interrupts(ThreadContext * tc) const
73        {
74            return true;
75        }
76
77        Fault getInterrupt(ThreadContext * tc)
78        {
79            return NoFault;
80        }
81
82        void serialize(std::ostream &os)
83        {
84        }
85
86        void unserialize(Checkpoint *cp, const std::string &section)
87        {
88        }
89    };
90}
91
92#endif // __ARCH_SPARC_INTERRUPT_HH__
93