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-rw-r--r--js/public/JitCodeAPI.h93
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/* SpiderMonkey API for obtaining JitCode information. */
+
+#ifndef js_JitCodeAPI_h
+#define js_JitCodeAPI_h
+
+#include "js/AllocPolicy.h"
+#include "js/Initialization.h"
+#include "js/Printf.h"
+#include "js/Vector.h"
+
+namespace JS {
+
+enum class JitTier { Baseline, IC, Ion, Other };
+
+class JitOpcodeDictionary {
+ typedef js::Vector<UniqueChars, 0, js::SystemAllocPolicy> StringVector;
+
+ public:
+ JitOpcodeDictionary();
+
+ StringVector& GetBaselineDictionary() { return baselineDictionary; }
+ StringVector& GetIonDictionary() { return ionDictionary; }
+ StringVector& GetInlineCacheDictionary() { return icDictionary; }
+
+ private:
+ StringVector baselineDictionary;
+ StringVector icDictionary;
+ StringVector ionDictionary;
+};
+
+struct JitCodeSourceInfo {
+ UniqueChars filename;
+ uint32_t offset = 0;
+ uint32_t lineno = 0;
+ uint32_t colno = 0;
+};
+
+struct JitCodeIRInfo {
+ uint32_t offset = 0;
+ uint32_t opcode = 0;
+ UniqueChars str;
+};
+
+typedef js::Vector<JitCodeSourceInfo, 0, js::SystemAllocPolicy>
+ SourceInfoVector;
+typedef js::Vector<JitCodeIRInfo, 0, js::SystemAllocPolicy> IRInfoVector;
+
+struct JitCodeRecord {
+ UniqueChars functionName;
+ uint64_t code_addr = 0;
+ uint32_t instructionSize = 0;
+ JitTier tier = JitTier::Other;
+
+ SourceInfoVector sourceInfo;
+ IRInfoVector irInfo;
+};
+
+class JitCodeIterator {
+ void getDataForIndex(size_t iteratorIndex);
+
+ public:
+ JitCodeIterator();
+ ~JitCodeIterator();
+
+ void operator++(int) {
+ iteratorIndex++;
+ getDataForIndex(iteratorIndex);
+ }
+
+ explicit operator bool() const { return data != nullptr; }
+
+ SourceInfoVector& sourceData() { return data->sourceInfo; }
+
+ IRInfoVector& irData() { return data->irInfo; }
+
+ const char* functionName() const { return data->functionName.get(); }
+ uint64_t code_addr() const { return data->code_addr; }
+ uint32_t instructionSize() { return data->instructionSize; }
+ JitTier jit_tier() const { return data->tier; }
+
+ private:
+ JitCodeRecord* data = nullptr;
+ size_t iteratorIndex = 0;
+};
+
+} // namespace JS
+
+#endif /* js_JitCodeAPI_h */