summaryrefslogtreecommitdiff
path: root/src/arch/alpha/isa.hh
blob: e2e2daba8999033d3c3d90c36f6a746e6f301a5e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
/*
 * Copyright (c) 2009 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: Gabe Black
 */

#ifndef __ARCH_ALPHA_ISA_HH__
#define __ARCH_ALPHA_ISA_HH__

#include <cstring>
#include <iostream>
#include <string>

#include "arch/alpha/registers.hh"
#include "arch/alpha/types.hh"
#include "base/types.hh"
#include "sim/sim_object.hh"

struct AlphaISAParams;
class BaseCPU;
class Checkpoint;
class EventManager;
class ThreadContext;

namespace AlphaISA
{
    class ISA : public SimObject
    {
      public:
        typedef uint64_t InternalProcReg;
        typedef AlphaISAParams Params;

      protected:
        uint64_t fpcr;       // floating point condition codes
        uint64_t uniq;       // process-unique register
        bool lock_flag;      // lock flag for LL/SC
        Addr lock_addr;      // lock address for LL/SC
        int intr_flag;

        InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs

      protected:
        InternalProcReg readIpr(int idx, ThreadContext *tc);
        void setIpr(int idx, InternalProcReg val, ThreadContext *tc);

      public:

        MiscReg readMiscRegNoEffect(int misc_reg, ThreadID tid = 0);
        MiscReg readMiscReg(int misc_reg, ThreadContext *tc, ThreadID tid = 0);

        void setMiscRegNoEffect(int misc_reg, const MiscReg &val,
                                ThreadID tid = 0);
        void setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc,
                        ThreadID tid = 0);

        void
        clear()
        {
            fpcr = 0;
            uniq = 0;
            lock_flag = 0;
            lock_addr = 0;
            intr_flag = 0;
            memset(ipr, 0, sizeof(ipr));
        }

        void serialize(std::ostream &os);
        void unserialize(Checkpoint *cp, const std::string &section);

        int
        flattenIntIndex(int reg)
        {
            return reg;
        }

        int
        flattenFloatIndex(int reg)
        {
            return reg;
        }

        const Params *params() const;

        ISA(Params *p);

        void startup(ThreadContext *tc) {}

        /// Explicitly import the otherwise hidden startup
        using SimObject::startup;
    };
}

#endif