1 files changed, 84 insertions, 0 deletions
diff --git a/chromium/v8/src/arm64/instrument-arm64.h b/chromium/v8/src/arm64/instrument-arm64.h
new file mode 100644
index 00000000000..74583108542
--- /dev/null
+++ b/chromium/v8/src/arm64/instrument-arm64.h
@@ -0,0 +1,84 @@
+// Copyright 2013 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_ARM64_INSTRUMENT_ARM64_H_
+#define V8_ARM64_INSTRUMENT_ARM64_H_
+
+#include "src/globals.h"
+#include "src/utils.h"
+#include "src/arm64/decoder-arm64.h"
+#include "src/arm64/constants-arm64.h"
+
+namespace v8 {
+namespace internal {
+
+const int kCounterNameMaxLength = 256;
+const uint64_t kDefaultInstrumentationSamplingPeriod = 1 << 22;
+
+
+enum InstrumentState {
+  InstrumentStateDisable = 0,
+  InstrumentStateEnable = 1
+};
+
+
+enum CounterType {
+  Gauge = 0,      // Gauge counters reset themselves after reading.
+  Cumulative = 1  // Cumulative counters keep their value after reading.
+};
+
+
+class Counter {
+ public:
+  Counter(const char* name, CounterType type = Gauge);
+
+  void Increment();
+  void Enable();
+  void Disable();
+  bool IsEnabled();
+  uint64_t count();
+  const char* name();
+  CounterType type();
+
+ private:
+  char name_[kCounterNameMaxLength];
+  uint64_t count_;
+  bool enabled_;
+  CounterType type_;
+};
+
+
+class Instrument: public DecoderVisitor {
+ public:
+  explicit Instrument(const char* datafile = NULL,
+    uint64_t sample_period = kDefaultInstrumentationSamplingPeriod);
+  ~Instrument();
+
+  // Declare all Visitor functions.
+  #define DECLARE(A) void Visit##A(Instruction* instr);
+  VISITOR_LIST(DECLARE)
+  #undef DECLARE
+
+ private:
+  void Update();
+  void Enable();
+  void Disable();
+  void DumpCounters();
+  void DumpCounterNames();
+  void DumpEventMarker(unsigned marker);
+  void HandleInstrumentationEvent(unsigned event);
+  Counter* GetCounter(const char* name);
+
+  void InstrumentLoadStore(Instruction* instr);
+  void InstrumentLoadStorePair(Instruction* instr);
+
+  std::list<Counter*> counters_;
+
+  FILE *output_stream_;
+  uint64_t sample_period_;
+};
+
+} }  // namespace v8::internal
+
+#endif  // V8_ARM64_INSTRUMENT_ARM64_H_