1e04b6281d
If the control flow of M5's executable and statetrace's target process get out of sync even a little, there will be a LOT of output, very little of which will be useful. There's also almost no hope for recovery. In those cases, we might as well give up and not generate a huge, mostly worthless trace file.
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/*
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* Copyright (c) 2006 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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* Authors: Gabe Black
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*/
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#ifndef __ARCH_ARM_NATIVETRACE_HH__
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#define __ARCH_ARM_NATIVETRACE_HH__
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#include "base/types.hh"
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#include "cpu/nativetrace.hh"
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#include "params/ArmNativeTrace.hh"
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namespace Trace {
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class ArmNativeTrace : public NativeTrace
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{
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public:
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enum StateID {
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STATE_R0,
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STATE_R1,
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STATE_R2,
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STATE_R3,
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STATE_R4,
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STATE_R5,
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STATE_R6,
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STATE_R7,
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STATE_R8,
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STATE_R9,
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STATE_R10,
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STATE_R11,
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STATE_FP = STATE_R11,
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STATE_R12,
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STATE_R13,
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STATE_SP = STATE_R13,
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STATE_R14,
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STATE_LR = STATE_R14,
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STATE_R15,
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STATE_PC = STATE_R15,
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STATE_CPSR,
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STATE_NUMVALS
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};
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protected:
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struct ThreadState {
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bool changed[STATE_NUMVALS];
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uint32_t state[2][STATE_NUMVALS];
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uint32_t *newState;
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uint32_t *oldState;
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int current;
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void update(NativeTrace *parent);
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void update(ThreadContext *tc);
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ThreadState()
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{
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for (int i = 0; i < STATE_NUMVALS; i++) {
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changed[i] = false;
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state[0][i] = state[1][i] = 0;
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current = 0;
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newState = state[0];
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oldState = state[1];
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}
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}
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};
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ThreadState nState, mState;
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bool stopOnPCError;
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public:
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typedef ArmNativeTraceParams Params;
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const Params *
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params() const
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{
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return dynamic_cast<const Params *>(_params);
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}
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ArmNativeTrace(const Params *p) :
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NativeTrace(p), stopOnPCError(p->stop_on_pc_error)
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{}
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void check(NativeTraceRecord *record);
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};
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} /* namespace Trace */
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#endif // __ARCH_ARM_NATIVETRACE_HH__
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