62aa07c915
This macro probably would have been defined to "return" in some cases, to be put after a call to a function that doesn't return so that the compiler wouldn't think control would reach the end of a non-void function. It was only ever defined to expand to nothing, and now that [[noreturn]] is a standard attribute, it should never be needed going forward. Change-Id: I37625eab72deeaede77f9347116b9fddd75febf7 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35217 Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
143 lines
3.8 KiB
C++
143 lines
3.8 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cpu/static_inst.hh"
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#include <iostream>
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#include "sim/core.hh"
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namespace {
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static TheISA::ExtMachInst nopMachInst;
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class NopStaticInst : public StaticInst
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{
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public:
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NopStaticInst() : StaticInst("gem5 nop", nopMachInst, No_OpClass)
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{}
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Fault
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execute(ExecContext *xc, Trace::InstRecord *traceData) const override
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{
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return NoFault;
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}
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void
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advancePC(TheISA::PCState &pcState) const override
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{
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pcState.advance();
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}
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std::string
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generateDisassembly(Addr pc,
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const Loader::SymbolTable *symtab) const override
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{
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return mnemonic;
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}
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private:
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};
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}
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StaticInstPtr StaticInst::nullStaticInstPtr;
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StaticInstPtr StaticInst::nopStaticInstPtr = new NopStaticInst;
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using namespace std;
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StaticInst::~StaticInst()
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{
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if (cachedDisassembly)
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delete cachedDisassembly;
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}
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bool
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StaticInst::hasBranchTarget(const TheISA::PCState &pc, ThreadContext *tc,
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TheISA::PCState &tgt) const
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{
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if (isDirectCtrl()) {
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tgt = branchTarget(pc);
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return true;
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}
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if (isIndirectCtrl()) {
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tgt = branchTarget(tc);
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return true;
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}
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return false;
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}
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StaticInstPtr
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StaticInst::fetchMicroop(MicroPC upc) const
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{
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panic("StaticInst::fetchMicroop() called on instruction "
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"that is not microcoded.");
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}
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TheISA::PCState
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StaticInst::branchTarget(const TheISA::PCState &pc) const
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{
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panic("StaticInst::branchTarget() called on instruction "
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"that is not a PC-relative branch.");
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}
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TheISA::PCState
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StaticInst::branchTarget(ThreadContext *tc) const
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{
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panic("StaticInst::branchTarget() called on instruction "
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"that is not an indirect branch.");
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}
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const string &
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StaticInst::disassemble(Addr pc, const Loader::SymbolTable *symtab) const
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{
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if (!cachedDisassembly)
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cachedDisassembly = new string(generateDisassembly(pc, symtab));
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return *cachedDisassembly;
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}
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void
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StaticInst::printFlags(std::ostream &outs,
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const std::string &separator) const
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{
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bool printed_a_flag = false;
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for (unsigned int flag = IsNop; flag < Num_Flags; flag++) {
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if (flags[flag]) {
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if (printed_a_flag)
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outs << separator;
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outs << FlagsStrings[flag];
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printed_a_flag = true;
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}
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}
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}
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