1 files changed, 87 insertions, 0 deletions
diff --git a/src/llvm/include/llvm-hard-perfmon.h b/src/llvm/include/llvm-hard-perfmon.h
new file mode 100644
index 0000000..ac03b23
--- /dev/null
+++ b/src/llvm/include/llvm-hard-perfmon.h
@@ -0,0 +1,87 @@
+/*
+ *  (C) 2018 by Computer System Laboratory, IIS, Academia Sinica, Taiwan.
+ *      See COPYRIGHT in top-level directory.
+ */
+
+#ifndef __LLVM_HARD_PERFMON_H
+#define __LLVM_HARD_PERFMON_H
+
+#include <map>
+#include <thread>
+#include "pmu/pmu.h"
+#include "utils.h"
+
+class PerfmonData;
+class BaseTracer;
+
+enum HPMControl {
+    HPM_INIT = 0,
+    HPM_FINALIZE,
+    HPM_START,
+    HPM_STOP,
+};
+
+/*
+ * Hardware Performance Monitor (HPM)
+ */
+class HardwarePerfmon {
+    std::thread MonThread;  /* Monitor thread */
+    int MonThreadID;        /* Monitor thread id */
+    bool MonThreadStop;     /* Monitor thread is stopped or not */
+    hqemu::Mutex Lock;
+
+    /* Start monitor thread. */
+    void StartMonThread();
+
+    /* Monitor thread routine. */
+    void MonitorFunc();
+
+public:
+    HardwarePerfmon();
+    ~HardwarePerfmon();
+
+    /* Set up HPM with the monitor thread id */
+    void Init(int monitor_thread_tid);
+
+    /* Register a thread to be monitored. */
+    void RegisterThread(BaseTracer *Tracer);
+
+    /* Unreigster a thread from being monitored. */
+    void UnregisterThread(BaseTracer *Tracer);
+
+    /* Notify that the execution enters/leaves the code cache. */
+    void NotifyCacheEnter(BaseTracer *Tracer);
+    void NotifyCacheLeave(BaseTracer *Tracer);
+
+    /* Stop the monitor. */
+    void Pause();
+
+    /* Restart the monitor. */
+    void Resume();
+};
+
+
+class PerfmonData {
+public:
+    PerfmonData(int tid);
+    ~PerfmonData();
+
+    int TID;
+    pmu::Handle ICountHndl;
+    pmu::Handle BranchHndl;
+    pmu::Handle MemLoadHndl;
+    pmu::Handle MemStoreHndl;
+    pmu::Handle CoverSetHndl;
+    uint64_t LastNumBranches, LastNumLoads, LastNumStores;
+
+    void MonitorBasic(HPMControl Ctl);
+    void MonitorCoverSet(HPMControl Ctl);
+};
+
+extern HardwarePerfmon *HP;
+
+#endif /* __LLVM_HARD_PERFMON_H */
+
+/*
+ * vim: ts=8 sts=4 sw=4 expandtab
+ */