base.isa revision 5666:e7925fa8f0d6 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007 The Hewlett-Packard Development Company
4// All rights reserved.
5//
6// Redistribution and use of this software in source and binary forms,
7// with or without modification, are permitted provided that the
8// following conditions are met:
9//
10// The software must be used only for Non-Commercial Use which means any
11// use which is NOT directed to receiving any direct monetary
12// compensation for, or commercial advantage from such use.  Illustrative
13// examples of non-commercial use are academic research, personal study,
14// teaching, education and corporate research & development.
15// Illustrative examples of commercial use are distributing products for
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17// commercial advantage.
18//
19// If you wish to use this software or functionality therein that may be
20// covered by patents for commercial use, please contact:
21//     Director of Intellectual Property Licensing
22//     Office of Strategy and Technology
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25//     Palo Alto, California  94304
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28// this list of conditions and the following disclaimer.  Redistributions
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33// contributors may be used to endorse or promote products derived from
34// this software without specific prior written permission.  No right of
35// sublicense is granted herewith.  Derivatives of the software and
36// output created using the software may be prepared, but only for
37// Non-Commercial Uses.  Derivatives of the software may be shared with
38// others provided: (i) the others agree to abide by the list of
39// conditions herein which includes the Non-Commercial Use restrictions;
40// and (ii) such Derivatives of the software include the above copyright
41// notice to acknowledge the contribution from this software where
42// applicable, this list of conditions and the disclaimer below.
43//
44// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
45// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
46// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
47// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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55//
56// Authors: Gabe Black
57
58let {{
59    # This will be populated with mappings between microop mnemonics and
60    # the classes that represent them.
61    microopClasses = {}
62}};
63
64//////////////////////////////////////////////////////////////////////////
65//
66// Base class for the python representation of x86 microops
67//
68//////////////////////////////////////////////////////////////////////////
69
70let {{
71    class X86Microop(object):
72 
73        generatorNameTemplate = "generate_%s_%d"
74
75        generatorTemplate = '''
76            StaticInstPtr
77            ''' + generatorNameTemplate + '''(StaticInstPtr curMacroop)
78            {
79                static const char * mnemonic = romMnemonic;
80                static const ExtMachInst dummyExtMachInst;
81                static const EmulEnv dummyEmulEnv(0, 0, 1, 1, 1);
82
83                Macroop * macroop = dynamic_cast<Macroop *>(curMacroop.get());
84                const ExtMachInst &machInst =
85                    macroop ? macroop->getExtMachInst() : dummyExtMachInst;
86                const EmulEnv &env =
87                    macroop ? macroop->getEmulEnv() : dummyEmulEnv;
88                // env may not be used in the microop's constructor.
89                RegIndex reg = env.reg;
90                reg = reg;
91                return %s;
92            }
93        '''
94
95        def __init__(self, name):
96            self.name = name
97
98        # This converts a python bool into a C++ bool
99        def cppBool(self, val):
100            if val:
101                return "true"
102            else:
103                return "false"
104
105        # This converts a list of python bools into
106        # a comma seperated list of C++ bools.
107        def microFlagsText(self, vals):
108            text = ""
109            for val in vals:
110                text += ", %s" % self.cppBool(val)
111            return text
112
113        def getAllocator(self, mnemonic, *microFlags):
114            return 'new %s(machInst, %s)' % \
115                (self.className, mnemonic, self.microFlagsText(microFlags))
116
117        def getGeneratorDef(self, micropc):
118            return self.generatorTemplate % \
119                (self.className, micropc, \
120                 self.getAllocator(True, False, False, False))
121
122        def getGenerator(self, micropc):
123            return self.generatorNameTemplate % (self.className, micropc)
124}};
125