timing.cc (12749:223c83ed9979) timing.cc (12769:f9c0d0a09dac)
1/*
2 * Copyright 2014 Google, Inc.
3 * Copyright (c) 2010-2013,2015,2017 ARM Limited
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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675TimingSimpleCPU::advanceInst(const Fault &fault)
676{
677 SimpleExecContext &t_info = *threadInfo[curThread];
678
679 if (_status == Faulting)
680 return;
681
682 if (fault != NoFault) {
1/*
2 * Copyright 2014 Google, Inc.
3 * Copyright (c) 2010-2013,2015,2017 ARM Limited
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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675TimingSimpleCPU::advanceInst(const Fault &fault)
676{
677 SimpleExecContext &t_info = *threadInfo[curThread];
678
679 if (_status == Faulting)
680 return;
681
682 if (fault != NoFault) {
683 DPRINTF(SimpleCPU, "Fault occured, scheduling fetch event\n");
683 DPRINTF(SimpleCPU, "Fault occured. Handling the fault\n");
684
685 advancePC(fault);
686
684
685 advancePC(fault);
686
687 Tick stall = dynamic_pointer_cast<SyscallRetryFault>(fault) ?
688 clockEdge(syscallRetryLatency) : clockEdge();
687 // A syscall fault could suspend this CPU (e.g., futex_wait)
688 // If the _status is not Idle, schedule an event to fetch the next
689 // instruction after 'stall' ticks.
690 // If the cpu has been suspended (i.e., _status == Idle), another
691 // cpu will wake this cpu up later.
692 if (_status != Idle) {
693 DPRINTF(SimpleCPU, "Scheduling fetch event after the Fault\n");
689
694
690 reschedule(fetchEvent, stall, true);
695 Tick stall = dynamic_pointer_cast<SyscallRetryFault>(fault) ?
696 clockEdge(syscallRetryLatency) : clockEdge();
697 reschedule(fetchEvent, stall, true);
698 _status = Faulting;
699 }
691
700
692 _status = Faulting;
693 return;
694 }
695
701 return;
702 }
703
696
697 if (!t_info.stayAtPC)
698 advancePC(fault);
699
700 if (tryCompleteDrain())
704 if (!t_info.stayAtPC)
705 advancePC(fault);
706
707 if (tryCompleteDrain())
701 return;
708 return;
702
703 if (_status == BaseSimpleCPU::Running) {
704 // kick off fetch of next instruction... callback from icache
705 // response will cause that instruction to be executed,
706 // keeping the CPU running.
707 fetch();
708 }
709}

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710 if (_status == BaseSimpleCPU::Running) {
711 // kick off fetch of next instruction... callback from icache
712 // response will cause that instruction to be executed,
713 // keeping the CPU running.
714 fetch();
715 }
716}

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