isa.hh revision 9920 
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_ALPHA_ISA_HH__
32#define __ARCH_ALPHA_ISA_HH__
33
34#include <cstring>
35#include <iostream>
36#include <string>
37
38#include "arch/alpha/registers.hh"
39#include "arch/alpha/types.hh"
40#include "base/types.hh"
41#include "sim/sim_object.hh"
42
43struct AlphaISAParams;
44class BaseCPU;
45class Checkpoint;
46class EventManager;
47class ThreadContext;
48
49namespace AlphaISA
50{
51    class ISA : public SimObject
52    {
53      public:
54        typedef uint64_t InternalProcReg;
55        typedef AlphaISAParams Params;
56
57      protected:
58        uint64_t fpcr;       // floating point condition codes
59        uint64_t uniq;       // process-unique register
60        bool lock_flag;      // lock flag for LL/SC
61        Addr lock_addr;      // lock address for LL/SC
62        int intr_flag;
63
64        InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs
65
66      protected:
67        InternalProcReg readIpr(int idx, ThreadContext *tc);
68        void setIpr(int idx, InternalProcReg val, ThreadContext *tc);
69
70      public:
71
72        MiscReg readMiscRegNoEffect(int misc_reg, ThreadID tid = 0);
73        MiscReg readMiscReg(int misc_reg, ThreadContext *tc, ThreadID tid = 0);
74
75        void setMiscRegNoEffect(int misc_reg, const MiscReg &val,
76                                ThreadID tid = 0);
77        void setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc,
78                        ThreadID tid = 0);
79
80        void
81        clear()
82        {
83            fpcr = 0;
84            uniq = 0;
85            lock_flag = 0;
86            lock_addr = 0;
87            intr_flag = 0;
88            memset(ipr, 0, sizeof(ipr));
89        }
90
91        void serialize(std::ostream &os);
92        void unserialize(Checkpoint *cp, const std::string &section);
93
94        int
95        flattenIntIndex(int reg)
96        {
97            return reg;
98        }
99
100        int
101        flattenFloatIndex(int reg)
102        {
103            return reg;
104        }
105
106        // dummy
107        int
108        flattenCCIndex(int reg)
109        {
110            return reg;
111        }
112
113        const Params *params() const;
114
115        ISA(Params *p);
116
117        void startup(ThreadContext *tc) {}
118
119        /// Explicitly import the otherwise hidden startup
120        using SimObject::startup;
121    };
122}
123
124#endif
125