base.isa revision 8607:5fb918115c07 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007 The Hewlett-Packard Development Company
4// All rights reserved.
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder.  You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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37//
38// Authors: Gabe Black
39
40let {{
41    # This will be populated with mappings between microop mnemonics and
42    # the classes that represent them.
43    microopClasses = {}
44}};
45
46//////////////////////////////////////////////////////////////////////////
47//
48// Base class for the python representation of x86 microops
49//
50//////////////////////////////////////////////////////////////////////////
51
52let {{
53    class X86Microop(object):
54 
55        generatorNameTemplate = "generate_%s_%d"
56
57        generatorTemplate = '''
58            StaticInstPtr
59            ''' + generatorNameTemplate + '''(StaticInstPtr curMacroop)
60            {
61                static const char *macrocodeBlock = romMnemonic;
62                static const ExtMachInst dummyExtMachInst = \
63                    X86ISA::NoopMachInst;
64                static const EmulEnv dummyEmulEnv(0, 0, 1, 1, 1);
65
66                Macroop * macroop = dynamic_cast<Macroop *>(curMacroop.get());
67                const ExtMachInst &machInst =
68                    macroop ? macroop->getExtMachInst() : dummyExtMachInst;
69                const EmulEnv &env =
70                    macroop ? macroop->getEmulEnv() : dummyEmulEnv;
71                // env may not be used in the microop's constructor.
72                InstRegIndex reg(env.reg);
73                reg = reg;
74                using namespace RomLabels;
75                return %s;
76            }
77        '''
78
79        def __init__(self, name):
80            self.name = name
81
82        def microFlagsText(self, flags):
83            wrapped = ("(1ULL << StaticInst::%s)" % flag for flag in flags)
84            return " | ".join(wrapped)
85
86        def getGeneratorDef(self, micropc):
87            return self.generatorTemplate % \
88                (self.className, micropc, \
89                 self.getAllocator(["IsMicroop", "IsDelayedCommit"]))
90
91        def getGenerator(self, micropc):
92            return self.generatorNameTemplate % (self.className, micropc)
93}};
94