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98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* SpiderMonkey API for obtaining JitCode information. */
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#ifndef js_JitCodeAPI_h
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#define js_JitCodeAPI_h
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#include "js/AllocPolicy.h"
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#include "js/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin
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#include "js/Initialization.h"
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#include "js/Printf.h"
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#include "js/Vector.h"
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namespace JS {
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enum class JitTier { Baseline, IC, Ion, Other };
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class JitOpcodeDictionary {
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typedef js::Vector<UniqueChars, 0, js::SystemAllocPolicy> StringVector;
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public:
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JitOpcodeDictionary();
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StringVector& GetBaselineDictionary() { return baselineDictionary; }
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StringVector& GetIonDictionary() { return ionDictionary; }
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StringVector& GetInlineCacheDictionary() { return icDictionary; }
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private:
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StringVector baselineDictionary;
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StringVector icDictionary;
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StringVector ionDictionary;
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};
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struct JitCodeSourceInfo {
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UniqueChars filename;
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uint32_t offset = 0;
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// Line number (1-origin).
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uint32_t lineno = 0;
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// Column number in UTF-16 code units.
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JS::LimitedColumnNumberOneOrigin colno;
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};
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struct JitCodeIRInfo {
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uint32_t offset = 0;
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uint32_t opcode = 0;
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UniqueChars str;
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};
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typedef js::Vector<JitCodeSourceInfo, 0, js::SystemAllocPolicy>
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SourceInfoVector;
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typedef js::Vector<JitCodeIRInfo, 0, js::SystemAllocPolicy> IRInfoVector;
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struct JitCodeRecord {
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UniqueChars functionName;
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uint64_t code_addr = 0;
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uint32_t instructionSize = 0;
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JitTier tier = JitTier::Other;
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SourceInfoVector sourceInfo;
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IRInfoVector irInfo;
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};
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class JitCodeIterator {
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void getDataForIndex(size_t iteratorIndex);
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public:
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JitCodeIterator();
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~JitCodeIterator();
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void operator++(int) {
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iteratorIndex++;
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getDataForIndex(iteratorIndex);
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}
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explicit operator bool() const { return data != nullptr; }
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SourceInfoVector& sourceData() { return data->sourceInfo; }
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IRInfoVector& irData() { return data->irInfo; }
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const char* functionName() const { return data->functionName.get(); }
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uint64_t code_addr() const { return data->code_addr; }
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uint32_t instructionSize() { return data->instructionSize; }
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JitTier jit_tier() const { return data->tier; }
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private:
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JitCodeRecord* data = nullptr;
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size_t iteratorIndex = 0;
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};
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} // namespace JS
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#endif /* js_JitCodeAPI_h */
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