microcode_rom.hh revision 5666:e7925fa8f0d6
1/* 2 * Copyright (c) 2008 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Gabe Black 29 */ 30 31#ifndef __ARCH_X86_MICROCODE_ROM_HH__ 32#define __ARCH_X86_MICROCODE_ROM_HH__ 33 34#include "arch/x86/emulenv.hh" 35#include "cpu/static_inst.hh" 36 37namespace X86ISAInst 38{ 39 class MicrocodeRom 40 { 41 protected: 42 43 typedef StaticInstPtr (*GenFunc)(StaticInstPtr); 44 45 static const MicroPC numMicroops; 46 47 GenFunc * genFuncs; 48 49 public: 50 //Constructor. 51 MicrocodeRom(); 52 53 //Destructor. 54 ~MicrocodeRom() 55 { 56 delete [] genFuncs; 57 } 58 59 StaticInstPtr 60 fetchMicroop(MicroPC microPC, StaticInstPtr curMacroop) 61 { 62 microPC = normalMicroPC(microPC); 63 assert(microPC < numMicroops); 64 return genFuncs[microPC](curMacroop); 65 } 66 }; 67} 68 69namespace X86ISA 70{ 71 using X86ISAInst::MicrocodeRom; 72} 73 74#endif // __ARCH_X86_MICROCODE_ROM_HH__ 75