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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/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin
#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;
// Line number (1-origin).
uint32_t lineno = 0;
// Column number in UTF-16 code units.
JS::LimitedColumnNumberOneOrigin colno;
};
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 */
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