1 files changed, 112 insertions, 0 deletions
diff --git a/js/src/jit/PerfSpewer.h b/js/src/jit/PerfSpewer.h
new file mode 100644
index 0000000000..cd9c9ae0f6
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+++ b/js/src/jit/PerfSpewer.h
@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_PerfSpewer_h
+#define jit_PerfSpewer_h
+
+#ifdef JS_ION_PERF
+#  include <stdio.h>
+#endif
+#include "jit/CacheIR.h"
+#include "jit/JitCode.h"
+#include "jit/Label.h"
+#include "jit/LIR.h"
+#include "js/AllocPolicy.h"
+#include "js/JitCodeAPI.h"
+#include "js/Vector.h"
+#include "vm/JSScript.h"
+
+namespace {
+struct AutoLockPerfSpewer;
+}
+
+namespace js::jit {
+
+using ProfilerJitCodeVector = Vector<JS::JitCodeRecord, 0, SystemAllocPolicy>;
+
+#ifdef JS_ION_PERF
+void CheckPerf();
+#else
+inline void CheckPerf() {}
+#endif
+void ResetPerfSpewer(bool enabled);
+
+class MBasicBlock;
+class MacroAssembler;
+
+bool PerfEnabled();
+
+class PerfSpewer {
+ protected:
+  struct OpcodeEntry {
+    Label addr;
+    unsigned opcode = 0;
+  };
+  Vector<OpcodeEntry, 0, SystemAllocPolicy> opcodes_;
+
+  uint32_t lir_opcode_length = 0;
+  uint32_t js_opcode_length = 0;
+
+  virtual JS::JitTier GetTier() { return JS::JitTier::Other; }
+
+  virtual const char* CodeName(unsigned op) = 0;
+
+ public:
+  PerfSpewer() = default;
+
+  void saveJitCodeIRInfo(const char* desc, JitCode* code,
+                         JS::JitCodeRecord* profilerRecord,
+                         AutoLockPerfSpewer& lock);
+  void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                             JS::JitCodeRecord* record,
+                             AutoLockPerfSpewer& lock);
+
+  static void CollectJitCodeInfo(UniqueChars& function_name, JitCode* code,
+                                 JS::JitCodeRecord*, AutoLockPerfSpewer& lock);
+  static void CollectJitCodeInfo(UniqueChars& function_name, void* code_addr,
+                                 uint64_t code_size,
+                                 JS::JitCodeRecord* profilerRecord,
+                                 AutoLockPerfSpewer& lock);
+};
+
+void CollectPerfSpewerJitCodeProfile(JitCode* code, const char* msg);
+
+void CollectPerfSpewerWasmMap(uintptr_t base, uintptr_t size,
+                              const char* filename, const char* annotation);
+void CollectPerfSpewerWasmFunctionMap(uintptr_t base, uintptr_t size,
+                                      const char* filename, unsigned lineno,
+                                      const char* funcName);
+
+class IonPerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::Ion; }
+  virtual const char* CodeName(unsigned op) override;
+
+ public:
+  void recordInstruction(MacroAssembler& masm, LNode::Opcode op);
+  void saveProfile(JSContext* cx, JSScript* script, JitCode* code);
+};
+
+class BaselinePerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::Baseline; }
+  virtual const char* CodeName(unsigned op) override;
+
+ public:
+  void recordInstruction(MacroAssembler& masm, JSOp op);
+  void saveProfile(JSContext* cx, JSScript* script, JitCode* code);
+};
+
+class InlineCachePerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::IC; }
+  virtual const char* CodeName(unsigned op) override;
+
+ public:
+  void recordInstruction(MacroAssembler& masm, CacheOp op);
+  void saveProfile(JitCode* code, const char* name);
+};
+
+}  // namespace js::jit
+
+#endif /* jit_PerfSpewer_h */