static_inst.hh revision 4808:a6eb56576b27 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use.  Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 *     Director of Intellectual Property Licensing
21 *     Office of Strategy and Technology
22 *     Hewlett-Packard Company
23 *     1501 Page Mill Road
24 *     Palo Alto, California  94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer.  Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution.  Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission.  No right of
34 * sublicense is granted herewith.  Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses.  Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 *
55 * Authors: Gabe Black
56 */
57
58#ifndef __ARCH_X86_INSTS_STATICINST_HH__
59#define __ARCH_X86_INSTS_STATICINST_HH__
60
61#include "base/trace.hh"
62#include "cpu/static_inst.hh"
63
64namespace X86ISA
65{
66    /**
67     * Base class for all X86 static instructions.
68     */
69
70    class X86StaticInst : public StaticInst
71    {
72      protected:
73        // Constructor.
74        X86StaticInst(const char *mnem,
75             ExtMachInst _machInst, OpClass __opClass)
76                : StaticInst(mnem, _machInst, __opClass)
77            {
78            }
79
80        std::string generateDisassembly(Addr pc,
81            const SymbolTable *symtab) const;
82
83        void printMnemonic(std::ostream &os, const char * mnemonic) const;
84        void printMnemonic(std::ostream &os, const char * instMnemonic,
85                const char * mnemonic) const;
86
87        void printSegment(std::ostream &os, int segment) const;
88
89        void printReg(std::ostream &os, int reg, int size) const;
90        void printSrcReg(std::ostream &os, int reg, int size) const;
91        void printDestReg(std::ostream &os, int reg, int size) const;
92
93        inline uint64_t merge(uint64_t into, uint64_t val, int size) const
94        {
95            X86IntReg reg = into;
96            if(_destRegIdx[0] & (1 << 6))
97            {
98                reg.H = val;
99                return reg;
100            }
101            switch(size)
102            {
103              case 1:
104                reg.L = val;
105                break;
106              case 2:
107                reg.X = val;
108                break;
109              case 4:
110                //XXX Check if this should be zeroed or sign extended
111                reg = 0;
112                reg.E = val;
113                break;
114              case 8:
115                reg.R = val;
116                break;
117              default:
118                panic("Tried to merge with unrecognized size %d.\n", size);
119            }
120            return reg;
121        }
122
123        inline uint64_t pick(uint64_t from, int idx, int size) const
124        {
125            X86IntReg reg = from;
126            DPRINTF(X86, "Picking with size %d\n", size);
127            if(_srcRegIdx[idx] & (1 << 6))
128                return reg.H;
129            switch(size)
130            {
131              case 1:
132                return reg.L;
133              case 2:
134                return reg.X;
135              case 4:
136                return reg.E;
137              case 8:
138                return reg.R;
139              default:
140                panic("Tried to pick with unrecognized size %d.\n", size);
141            }
142        }
143    };
144}
145
146#endif //__ARCH_X86_INSTS_STATICINST_HH__
147