isa.hh revision 9376:270c9a75e91f 
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_X86_ISA_HH__
32#define __ARCH_X86_ISA_HH__
33
34#include <iostream>
35#include <string>
36
37#include "arch/x86/regs/float.hh"
38#include "arch/x86/regs/misc.hh"
39#include "arch/x86/registers.hh"
40#include "base/types.hh"
41
42class Checkpoint;
43class EventManager;
44class ThreadContext;
45
46namespace X86ISA
47{
48    class ISA
49    {
50      protected:
51        MiscReg regVal[NUM_MISCREGS];
52        void updateHandyM5Reg(Efer efer, CR0 cr0,
53                SegAttr csAttr, SegAttr ssAttr, RFLAGS rflags,
54                ThreadContext *tc);
55
56      public:
57        void clear();
58
59        ISA()
60        {
61            clear();
62        }
63
64        MiscReg readMiscRegNoEffect(int miscReg);
65        MiscReg readMiscReg(int miscReg, ThreadContext *tc);
66
67        void setMiscRegNoEffect(int miscReg, MiscReg val);
68        void setMiscReg(int miscReg, MiscReg val, ThreadContext *tc);
69
70        int
71        flattenIntIndex(int reg)
72        {
73            return reg & ~IntFoldBit;
74        }
75
76        int
77        flattenFloatIndex(int reg)
78        {
79            if (reg >= NUM_FLOATREGS) {
80                reg = FLOATREG_STACK(reg - NUM_FLOATREGS,
81                                     regVal[MISCREG_X87_TOP]);
82            }
83            return reg;
84        }
85
86        void serialize(EventManager *em, std::ostream &os);
87        void unserialize(EventManager *em, Checkpoint *cp,
88                const std::string &section);
89    };
90}
91
92#endif
93