static_inst.hh revision 12309:326eb6251659
1// -*- mode:c++ -*- 2 3// Copyright (c) 2015 RISC-V Foundation 4// Copyright (c) 2016 The University of Virginia 5// All rights reserved. 6// 7// Redistribution and use in source and binary forms, with or without 8// modification, are permitted provided that the following conditions are 9// met: redistributions of source code must retain the above copyright 10// notice, this list of conditions and the following disclaimer; 11// redistributions in binary form must reproduce the above copyright 12// notice, this list of conditions and the following disclaimer in the 13// documentation and/or other materials provided with the distribution; 14// neither the name of the copyright holders nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29// 30// Authors: Maxwell Walter 31// Alec Roelke 32 33#ifndef __ARCH_RISCV_STATIC_INST_HH__ 34#define __ARCH_RISCV_STATIC_INST_HH__ 35 36#include <string> 37 38#include "arch/riscv/types.hh" 39#include "cpu/exec_context.hh" 40#include "cpu/static_inst.hh" 41#include "mem/packet.hh" 42 43namespace RiscvISA 44{ 45 46/** 47 * Base class for all RISC-V static instructions. 48 */ 49class RiscvStaticInst : public StaticInst 50{ 51 protected: 52 using StaticInst::StaticInst; 53 54 virtual std::string 55 generateDisassembly(Addr pc, const SymbolTable *symtab) const = 0; 56 57 public: 58 void advancePC(PCState &pc) const { pc.advance(); } 59}; 60 61/** 62 * Base class for all RISC-V Macroops 63 */ 64class RiscvMacroInst : public RiscvStaticInst 65{ 66 protected: 67 std::vector<StaticInstPtr> microops; 68 69 // Constructor 70 RiscvMacroInst(const char *mnem, ExtMachInst _machInst, 71 OpClass __opClass) : 72 RiscvStaticInst(mnem, _machInst, __opClass) 73 { 74 flags[IsMacroop] = true; 75 } 76 77 ~RiscvMacroInst() { microops.clear(); } 78 79 StaticInstPtr fetchMicroop(MicroPC upc) const { return microops[upc]; } 80 81 Fault 82 initiateAcc(ExecContext *xc, Trace::InstRecord *traceData) const 83 { 84 panic("Tried to execute a macroop directly!\n"); 85 } 86 87 Fault 88 completeAcc(PacketPtr pkt, ExecContext *xc, 89 Trace::InstRecord *traceData) const 90 { 91 panic("Tried to execute a macroop directly!\n"); 92 } 93 94 Fault 95 execute(ExecContext *xc, Trace::InstRecord *traceData) const 96 { 97 panic("Tried to execute a macroop directly!\n"); 98 } 99}; 100 101/** 102 * Base class for all RISC-V Microops 103 */ 104class RiscvMicroInst : public RiscvStaticInst 105{ 106 protected: 107 // Constructor 108 RiscvMicroInst(const char *mnem, ExtMachInst _machInst, 109 OpClass __opClass) : 110 RiscvStaticInst(mnem, _machInst, __opClass) 111 { 112 flags[IsMicroop] = true; 113 } 114 115 void advancePC(PCState &pcState) const; 116}; 117 118} 119 120#endif // __ARCH_RISCV_STATIC_INST_HH__ 121