fde58a4365
Due to inverted logic in POWER fault handlers, unimplemented opcode and
trap faults did not report trap to GDB (if connected). This commit fixes
the problem.
While at it, I opted to use `if (! ...) { panic(...) }` rather than
`panic_if(...)`. I find it easier to understand in this case.
Change-Id: I6cd5dfd5f6546b8541d685e877afef21540d6824
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021 IBM Corporation
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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 "arch/power/faults.hh"
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#include <csignal>
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#include "cpu/base.hh"
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#include "cpu/thread_context.hh"
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namespace gem5
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{
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namespace PowerISA
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{
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void
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UnimplementedOpcodeFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
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{
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if (! tc->getSystemPtr()->trapToGdb(GDBSignal::ILL, tc->contextId()) ) {
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panic("Unimplemented opcode encountered at virtual address %#x\n",
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tc->pcState().instAddr());
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}
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}
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void
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AlignmentFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
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{
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if (! tc->getSystemPtr()->trapToGdb(GDBSignal::BUS, tc->contextId()) ) {
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panic("Alignment fault when accessing virtual address %#x\n",
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vaddr);
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}
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}
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void
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TrapFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
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{
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if (! tc->getSystemPtr()->trapToGdb(GDBSignal::TRAP, tc->contextId()) ) {
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panic("Trap encountered at virtual address %#x\n",
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tc->pcState().instAddr());
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}
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}
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} // namespace PowerISA
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} // namespace gem5
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