1 // Copyright (c) 2008 The Regents of The University of Michigan
2 // All rights reserved.
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met: redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer;
8 // redistributions in binary form must reproduce the above copyright
9 // notice, this list of conditions and the following disclaimer in the
10 // documentation and/or other materials provided with the distribution;
11 // neither the name of the copyright holders nor the names of its
12 // contributors may be used to endorse or promote products derived from
13 // this software without specific prior written permission.
15 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 // Authors: Gabe Black
29 def template MicroRomConstructor {{
32 const MicroPC X86ISA::MicrocodeRom::numMicroops = %(num_microops)s;
34 X86ISA::MicrocodeRom::MicrocodeRom()
36 using namespace RomLabels;
37 genFuncs = new GenFunc[numMicroops];
43 from micro_asm import Rom
45 class X86MicrocodeRom(Rom):
46 def __init__(self, name):
47 super(X86MicrocodeRom, self).__init__(name)
50 def add_microop(self, mnemonic, microop):
51 microop.mnemonic = mnemonic
52 microop.micropc = len(self.microops)
53 self.microops.append(microop)
56 def getDeclaration(self):
57 declareLabels = "namespace RomLabels {\n"
58 for (label, microop) in self.externs.items():
60 "const static MicroPC extern_label_%s = %d;\n" \
61 % (label, microop.micropc)
62 declareLabels += "}\n"
65 def getDefinition(self):
66 numMicroops = len(self.microops)
69 define_generators = '''
72 static const char romMnemonic[] = "Microcode_ROM";
74 for op in self.microops:
75 define_generators += op.getGeneratorDef(micropc)
76 allocGenerators += "genFuncs[%d] = %s;\n" % \
77 (micropc, op.getGenerator(micropc))
79 define_generators += "}\n"
80 iop = InstObjParams(self.name, self.name, "MicrocodeRom",
82 "define_generators" : define_generators,
83 "num_microops" : numMicroops,
84 "alloc_generators" : allocGenerators
86 return MicroRomConstructor.subst(iop);