isa.hh revision 6401 
1/*
2 * Copyright (c) 2009 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_ARM_ISA_HH__
32#define __ARCH_MRM_ISA_HH__
33
34#include "arch/arm/registers.hh"
35#include "arch/arm/types.hh"
36
37class ThreadContext;
38class Checkpoint;
39class EventManager;
40
41namespace ArmISA
42{
43    class ISA
44    {
45      protected:
46        MiscReg miscRegs[NumMiscRegs];
47
48      public:
49        void clear()
50        {
51            memset(miscRegs, 0, sizeof(miscRegs));
52            CPSR cpsr = 0;
53            cpsr.mode = MODE_USER;
54            miscRegs[MISCREG_CPSR] = cpsr;
55            //XXX We need to initialize the rest of the state.
56        }
57
58        MiscReg
59        readMiscRegNoEffect(int misc_reg)
60        {
61            assert(misc_reg < NumMiscRegs);
62            return miscRegs[misc_reg];
63        }
64
65        MiscReg
66        readMiscReg(int misc_reg, ThreadContext *tc)
67        {
68            assert(misc_reg < NumMiscRegs);
69            return miscRegs[misc_reg];
70        }
71
72        void
73        setMiscRegNoEffect(int misc_reg, const MiscReg &val)
74        {
75            assert(misc_reg < NumMiscRegs);
76            miscRegs[misc_reg] = val;
77        }
78
79        void
80        setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc)
81        {
82            assert(misc_reg < NumMiscRegs);
83            miscRegs[misc_reg] = val;
84        }
85
86        int
87        flattenIntIndex(int reg)
88        {
89            return reg;
90        }
91
92        int
93        flattenFloatIndex(int reg)
94        {
95            return reg;
96        }
97
98        void serialize(std::ostream &os)
99        {}
100        void unserialize(Checkpoint *cp, const std::string &section)
101        {}
102
103        ISA()
104        {
105            clear();
106        }
107    };
108}
109
110#endif
111