src/arch/x86/isa/microops/base.isa

   1 // -*- mode:c++ -*-
   2
   3 // Copyright (c) 2007 The Hewlett-Packard Development Company
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   9 // to a hardware implementation of the functionality of the software
  10 // licensed hereunder.  You may use the software subject to the license
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  26 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  37 //
  38 // Authors: Gabe Black
  39
  40 let {{
  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
  52 let {{
  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                 static const EmulEnv dummyEmulEnv(0, 0, 1, 1, 1);
  64
  65                 Macroop * macroop = dynamic_cast<Macroop *>(curMacroop.get());
  66                 const ExtMachInst &machInst =
  67                     macroop ? macroop->getExtMachInst() : dummyExtMachInst;
  68                 const EmulEnv &env =
  69                     macroop ? macroop->getEmulEnv() : dummyEmulEnv;
  70                 // env may not be used in the microop's constructor.
  71                 InstRegIndex reg(env.reg);
  72                 reg = reg;
  73                 using namespace RomLabels;
  74                 return %s;
  75             }
  76         '''
  77
  78         def __init__(self, name):
  79             self.name = name
  80
  81         def microFlagsText(self, flags):
  82             wrapped = ("(1ULL << StaticInst::%s)" % flag for flag in flags)
  83             return " | ".join(wrapped)
  84
  85         def getGeneratorDef(self, micropc):
  86             return self.generatorTemplate % \
  87                 (self.className, micropc, \
  88                  self.getAllocator(["IsMicroop", "IsDelayedCommit"]))
  89
  90         def getGenerator(self, micropc):
  91             return self.generatorNameTemplate % (self.className, micropc)
  92 }};