xref: /gem5/src/arch/x86/isa/microops/base.isa

// -*- mode:c++ -*-

// Copyright (c) 2007 The Hewlett-Packard Development Company
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// Authors: Gabe Black

let {{
    # This will be populated with mappings between microop mnemonics and
    # the classes that represent them.
    microopClasses = {}
}};

//////////////////////////////////////////////////////////////////////////
//
// Base class for the python representation of x86 microops
//
//////////////////////////////////////////////////////////////////////////

let {{
    class X86Microop(object):
 
        generatorNameTemplate = "generate_%s_%d"

        generatorTemplate = '''
            StaticInstPtr
            ''' + generatorNameTemplate + '''(StaticInstPtr curMacroop)
            {
                static const char * mnemonic = romMnemonic;
                static const ExtMachInst dummyExtMachInst;
                static const EmulEnv dummyEmulEnv(0, 0, 1, 1, 1);

                Macroop * macroop = dynamic_cast<Macroop *>(curMacroop.get());
                const ExtMachInst &machInst =
                    macroop ? macroop->getExtMachInst() : dummyExtMachInst;
                const EmulEnv &env =
                    macroop ? macroop->getEmulEnv() : dummyEmulEnv;
                // env may not be used in the microop's constructor.
                RegIndex reg = env.reg;
                reg = reg;
                using namespace RomLabels;
                return %s;
            }
        '''

        def __init__(self, name):
            self.name = name

        # This converts a python bool into a C++ bool
        def cppBool(self, val):
            if val:
                return "true"
            else:
                return "false"

        # This converts a list of python bools into
        # a comma seperated list of C++ bools.
        def microFlagsText(self, vals):
            text = ""
            for val in vals:
                text += ", %s" % self.cppBool(val)
            return text

        def getAllocator(self, mnemonic, *microFlags):
            return 'new %s(machInst, %s)' % \
                (self.className, mnemonic, self.microFlagsText(microFlags))

        def getGeneratorDef(self, micropc):
            return self.generatorTemplate % \
                (self.className, micropc, \
                 self.getAllocator(True, False, False, False))

        def getGenerator(self, micropc):
            return self.generatorNameTemplate % (self.className, micropc)
}};