thread_context.hh

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 * Copyright (c) 2013 Advanced Micro Devices, Inc.
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 * to a hardware implementation of the functionality of the software
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#ifndef __CPU_O3_THREAD_CONTEXT_HH__
#define __CPU_O3_THREAD_CONTEXT_HH__
 
#include "cpu/o3/cpu.hh"
#include "cpu/thread_context.hh"
 
namespace gem5
{
 
namespace o3
{

class ThreadContext : public gem5::ThreadContext
{
  public:
    CPU *cpu;
 
    bool
    schedule(PCEvent *e) override
    {
        return thread->pcEventQueue.schedule(e);
    }
    bool
    remove(PCEvent *e) override
    {
        return thread->pcEventQueue.remove(e);
    }
 
    void
    scheduleInstCountEvent(Event *event, Tick count) override
    {
        thread->comInstEventQueue.schedule(event, count);
    }
    void
    descheduleInstCountEvent(Event *event) override
    {
        thread->comInstEventQueue.deschedule(event);
    }
    Tick
    getCurrentInstCount() override
    {
        return thread->comInstEventQueue.getCurTick();
    }

    ThreadState *thread;

    BaseMMU *getMMUPtr() override { return cpu->mmu; }
 
    CheckerCPU *getCheckerCpuPtr() override { return NULL; }
 
    BaseISA *
    getIsaPtr() const override
    {
        return cpu->isa[thread->threadId()];
    }
 
    InstDecoder *
    getDecoderPtr() override
    {
        return cpu->fetch.decoder[thread->threadId()];
    }

    BaseCPU *getCpuPtr() override { return cpu; }

    int cpuId() const override { return cpu->cpuId(); }

    uint32_t socketId() const override { return cpu->socketId(); }
 
    ContextID contextId() const override { return thread->contextId(); }
 
    void setContextId(ContextID id) override { thread->setContextId(id); }

    int threadId() const override { return thread->threadId(); }
    void setThreadId(int id) override { return thread->setThreadId(id); }

    System *getSystemPtr() override { return cpu->system; }

    Process *getProcessPtr() override { return thread->getProcessPtr(); }
 
    void setProcessPtr(Process *p) override { thread->setProcessPtr(p); }

    Status status() const override { return thread->status(); }

    void
    setStatus(Status new_status) override
    {
        thread->setStatus(new_status);
    }

    void activate() override;

    void suspend() override;

    void halt() override;

    void takeOverFrom(gem5::ThreadContext *old_context) override;

    Tick readLastActivate() override;
    Tick readLastSuspend() override;

    void copyArchRegs(gem5::ThreadContext *tc) override;

    void clearArchRegs() override;

    const PCStateBase &
    pcState() const override
    {
        return cpu->pcState(thread->threadId());
    }

    void pcState(const PCStateBase &val) override;
 
    void pcStateNoRecord(const PCStateBase &val) override;

    RegVal
    readMiscRegNoEffect(RegIndex misc_reg) const override
    {
        return cpu->readMiscRegNoEffect(misc_reg, thread->threadId());
    }

    RegVal
    readMiscReg(RegIndex misc_reg) override
    {
        return cpu->readMiscReg(misc_reg, thread->threadId());
    }

    void setMiscRegNoEffect(RegIndex misc_reg, RegVal val) override;

    void setMiscReg(RegIndex misc_reg, RegVal val) override;

    // @todo: Figure out where these store cond failures should go.
    unsigned
    readStCondFailures() const override
    {
        return thread->storeCondFailures;
    }

    void
    setStCondFailures(unsigned sc_failures) override
    {
        thread->storeCondFailures = sc_failures;
    }

    void
    conditionalSquash()
    {
        if (!thread->trapPending && !thread->noSquashFromTC)
            cpu->squashFromTC(thread->threadId());
    }
 
    RegVal getReg(const RegId &reg) const override;
    void getReg(const RegId &reg, void *val) const override;
    void *getWritableReg(const RegId &reg) override;
 
    void setReg(const RegId &reg, RegVal val) override;
    void setReg(const RegId &reg, const void *val) override;
 
    // hardware transactional memory
    void htmAbortTransaction(uint64_t htm_uid,
                             HtmFailureFaultCause cause) override;
    BaseHTMCheckpointPtr& getHtmCheckpointPtr() override;
    void setHtmCheckpointPtr(BaseHTMCheckpointPtr new_cpt) override;
};
 
} // namespace o3
} // namespace gem5
 
#endif