faults.hh revision 12136
111723Sar4jc@virginia.edu/* 211723Sar4jc@virginia.edu * Copyright (c) 2016 RISC-V Foundation 311723Sar4jc@virginia.edu * Copyright (c) 2016 The University of Virginia 411723Sar4jc@virginia.edu * All rights reserved. 511723Sar4jc@virginia.edu * 611723Sar4jc@virginia.edu * Redistribution and use in source and binary forms, with or without 711723Sar4jc@virginia.edu * modification, are permitted provided that the following conditions are 811723Sar4jc@virginia.edu * met: redistributions of source code must retain the above copyright 911723Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer; 1011723Sar4jc@virginia.edu * redistributions in binary form must reproduce the above copyright 1111723Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer in the 1211723Sar4jc@virginia.edu * documentation and/or other materials provided with the distribution; 1311723Sar4jc@virginia.edu * neither the name of the copyright holders nor the names of its 1411723Sar4jc@virginia.edu * contributors may be used to endorse or promote products derived from 1511723Sar4jc@virginia.edu * this software without specific prior written permission. 1611723Sar4jc@virginia.edu * 1711723Sar4jc@virginia.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1811723Sar4jc@virginia.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1911723Sar4jc@virginia.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2011723Sar4jc@virginia.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2111723Sar4jc@virginia.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2211723Sar4jc@virginia.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2311723Sar4jc@virginia.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2411723Sar4jc@virginia.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2511723Sar4jc@virginia.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2611723Sar4jc@virginia.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2711723Sar4jc@virginia.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2811723Sar4jc@virginia.edu * 2911723Sar4jc@virginia.edu * Authors: Alec Roelke 3011723Sar4jc@virginia.edu */ 3111723Sar4jc@virginia.edu 3211723Sar4jc@virginia.edu#ifndef __ARCH_RISCV_FAULTS_HH__ 3311723Sar4jc@virginia.edu#define __ARCH_RISCV_FAULTS_HH__ 3411723Sar4jc@virginia.edu 3511723Sar4jc@virginia.edu#include <string> 3611723Sar4jc@virginia.edu 3711723Sar4jc@virginia.edu#include "cpu/thread_context.hh" 3811723Sar4jc@virginia.edu#include "sim/faults.hh" 3911723Sar4jc@virginia.edu 4011723Sar4jc@virginia.edunamespace RiscvISA 4111723Sar4jc@virginia.edu{ 4211723Sar4jc@virginia.edu 4311725Sar4jc@virginia.educonst uint32_t FloatInexact = 1 << 0; 4411725Sar4jc@virginia.educonst uint32_t FloatUnderflow = 1 << 1; 4511725Sar4jc@virginia.educonst uint32_t FloatOverflow = 1 << 2; 4611725Sar4jc@virginia.educonst uint32_t FloatDivZero = 1 << 3; 4711725Sar4jc@virginia.educonst uint32_t FloatInvalid = 1 << 4; 4811725Sar4jc@virginia.edu 4911723Sar4jc@virginia.eduenum ExceptionCode { 5011723Sar4jc@virginia.edu INST_ADDR_MISALIGNED = 0, 5111723Sar4jc@virginia.edu INST_ACCESS = 1, 5211723Sar4jc@virginia.edu INST_ILLEGAL = 2, 5311723Sar4jc@virginia.edu BREAKPOINT = 3, 5411723Sar4jc@virginia.edu LOAD_ADDR_MISALIGNED = 4, 5511723Sar4jc@virginia.edu LOAD_ACCESS = 5, 5611723Sar4jc@virginia.edu STORE_ADDR_MISALIGNED = 6, 5711723Sar4jc@virginia.edu AMO_ADDR_MISALIGNED = 6, 5811723Sar4jc@virginia.edu STORE_ACCESS = 7, 5911723Sar4jc@virginia.edu AMO_ACCESS = 7, 6011723Sar4jc@virginia.edu ECALL_USER = 8, 6111723Sar4jc@virginia.edu ECALL_SUPER = 9, 6211723Sar4jc@virginia.edu ECALL_HYPER = 10, 6311723Sar4jc@virginia.edu ECALL_MACH = 11 6411723Sar4jc@virginia.edu}; 6511723Sar4jc@virginia.edu 6611723Sar4jc@virginia.eduenum InterruptCode { 6711723Sar4jc@virginia.edu SOFTWARE, 6811723Sar4jc@virginia.edu TIMER 6911723Sar4jc@virginia.edu}; 7011723Sar4jc@virginia.edu 7111723Sar4jc@virginia.educlass RiscvFault : public FaultBase 7211723Sar4jc@virginia.edu{ 7311723Sar4jc@virginia.edu protected: 7411723Sar4jc@virginia.edu const FaultName _name; 7511723Sar4jc@virginia.edu const ExceptionCode _code; 7611723Sar4jc@virginia.edu const InterruptCode _int; 7711723Sar4jc@virginia.edu 7811723Sar4jc@virginia.edu RiscvFault(FaultName n, ExceptionCode c, InterruptCode i) 7911723Sar4jc@virginia.edu : _name(n), _code(c), _int(i) 8011723Sar4jc@virginia.edu {} 8111723Sar4jc@virginia.edu 8211723Sar4jc@virginia.edu FaultName 8311723Sar4jc@virginia.edu name() const 8411723Sar4jc@virginia.edu { 8511723Sar4jc@virginia.edu return _name; 8611723Sar4jc@virginia.edu } 8711723Sar4jc@virginia.edu 8811723Sar4jc@virginia.edu ExceptionCode 8911723Sar4jc@virginia.edu exception() const 9011723Sar4jc@virginia.edu { 9111723Sar4jc@virginia.edu return _code; 9211723Sar4jc@virginia.edu } 9311723Sar4jc@virginia.edu 9411723Sar4jc@virginia.edu InterruptCode 9511723Sar4jc@virginia.edu interrupt() const 9611723Sar4jc@virginia.edu { 9711723Sar4jc@virginia.edu return _int; 9811723Sar4jc@virginia.edu } 9911723Sar4jc@virginia.edu 10011723Sar4jc@virginia.edu virtual void 10111723Sar4jc@virginia.edu invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 10211723Sar4jc@virginia.edu 10311723Sar4jc@virginia.edu void 10411723Sar4jc@virginia.edu invoke(ThreadContext *tc, const StaticInstPtr &inst); 10511723Sar4jc@virginia.edu}; 10611723Sar4jc@virginia.edu 10711723Sar4jc@virginia.edu 10811723Sar4jc@virginia.educlass UnknownInstFault : public RiscvFault 10911723Sar4jc@virginia.edu{ 11011723Sar4jc@virginia.edu public: 11111723Sar4jc@virginia.edu UnknownInstFault() : RiscvFault("Unknown instruction", INST_ILLEGAL, 11211723Sar4jc@virginia.edu SOFTWARE) 11311723Sar4jc@virginia.edu {} 11411723Sar4jc@virginia.edu 11511723Sar4jc@virginia.edu void 11611723Sar4jc@virginia.edu invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 11711723Sar4jc@virginia.edu}; 11811723Sar4jc@virginia.edu 11912136Sar4jc@virginia.educlass IllegalInstFault : public RiscvFault 12012136Sar4jc@virginia.edu{ 12112136Sar4jc@virginia.edu private: 12212136Sar4jc@virginia.edu const std::string reason; 12312136Sar4jc@virginia.edu public: 12412136Sar4jc@virginia.edu IllegalInstFault(std::string r) 12512136Sar4jc@virginia.edu : RiscvFault("Illegal instruction", INST_ILLEGAL, SOFTWARE), 12612136Sar4jc@virginia.edu reason(r) 12712136Sar4jc@virginia.edu {} 12812136Sar4jc@virginia.edu 12912136Sar4jc@virginia.edu void invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 13012136Sar4jc@virginia.edu}; 13112136Sar4jc@virginia.edu 13211723Sar4jc@virginia.educlass UnimplementedFault : public RiscvFault 13311723Sar4jc@virginia.edu{ 13411723Sar4jc@virginia.edu private: 13511723Sar4jc@virginia.edu const std::string instName; 13611723Sar4jc@virginia.edu public: 13711723Sar4jc@virginia.edu UnimplementedFault(std::string name) 13811723Sar4jc@virginia.edu : RiscvFault("Unimplemented instruction", INST_ILLEGAL, SOFTWARE), 13911723Sar4jc@virginia.edu instName(name) 14011723Sar4jc@virginia.edu {} 14111723Sar4jc@virginia.edu 14211723Sar4jc@virginia.edu void 14311723Sar4jc@virginia.edu invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 14411723Sar4jc@virginia.edu}; 14511723Sar4jc@virginia.edu 14611725Sar4jc@virginia.educlass IllegalFrmFault: public RiscvFault 14711725Sar4jc@virginia.edu{ 14811725Sar4jc@virginia.edu private: 14911725Sar4jc@virginia.edu const uint8_t frm; 15011725Sar4jc@virginia.edu public: 15111725Sar4jc@virginia.edu IllegalFrmFault(uint8_t r) 15211725Sar4jc@virginia.edu : RiscvFault("Illegal floating-point rounding mode", INST_ILLEGAL, 15311725Sar4jc@virginia.edu SOFTWARE), 15411725Sar4jc@virginia.edu frm(r) 15511725Sar4jc@virginia.edu {} 15611725Sar4jc@virginia.edu 15711725Sar4jc@virginia.edu void invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 15811725Sar4jc@virginia.edu}; 15911725Sar4jc@virginia.edu 16011723Sar4jc@virginia.educlass BreakpointFault : public RiscvFault 16111723Sar4jc@virginia.edu{ 16211723Sar4jc@virginia.edu public: 16311723Sar4jc@virginia.edu BreakpointFault() : RiscvFault("Breakpoint", BREAKPOINT, SOFTWARE) 16411723Sar4jc@virginia.edu {} 16511723Sar4jc@virginia.edu 16611723Sar4jc@virginia.edu void 16711723Sar4jc@virginia.edu invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 16811723Sar4jc@virginia.edu}; 16911723Sar4jc@virginia.edu 17011723Sar4jc@virginia.educlass SyscallFault : public RiscvFault 17111723Sar4jc@virginia.edu{ 17211723Sar4jc@virginia.edu public: 17311723Sar4jc@virginia.edu // TODO: replace ECALL_USER with the appropriate privilege level of the 17411723Sar4jc@virginia.edu // caller 17511723Sar4jc@virginia.edu SyscallFault() : RiscvFault("System call", ECALL_USER, SOFTWARE) 17611723Sar4jc@virginia.edu {} 17711723Sar4jc@virginia.edu 17811723Sar4jc@virginia.edu void 17911723Sar4jc@virginia.edu invoke_se(ThreadContext *tc, const StaticInstPtr &inst); 18011723Sar4jc@virginia.edu}; 18111723Sar4jc@virginia.edu 18211723Sar4jc@virginia.edu} // namespace RiscvISA 18311723Sar4jc@virginia.edu 18411723Sar4jc@virginia.edu#endif // __ARCH_RISCV_FAULTS_HH__ 185