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/*
* Copyright (C) 2025 Igalia, S.L. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(ASSEMBLER)
#include "LinkBuffer.h"
#include <stdio.h>
#include <wtf/Lock.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/text/CString.h>
extern "C" {
struct JITCodeEntry;
struct GdbJITAddressRegionLess {
inline bool operator()(const std::span<const uint8_t>& a, const std::span<const uint8_t>& b) const
{
if (a.data() == b.data()) return a.size() < b.size();
return a.data() < b.data();
}
};
using GdbJITCodeMap = std::map<std::span<const uint8_t>, JITCodeEntry*, GdbJITAddressRegionLess>;
}
namespace JSC {
// This is a little helper for writing DWARF information
// so that GDB can recognize our jit functions.
// This file originally came from v8/src/diagnostics/gdb-jit.h
class GdbJIT {
WTF_MAKE_TZONE_ALLOCATED(GdbJIT);
WTF_MAKE_NONCOPYABLE(GdbJIT);
friend class LazyNeverDestroyed<GdbJIT>;
public:
static void log(const CString& name, MacroAssemblerCodeRef<LinkBufferPtrTag>);
private:
GdbJIT() = default;
static GdbJIT& singleton();
Lock m_lock;
GdbJITCodeMap m_map;
};
} // namespace JSC
#endif // ENABLE(ASSEMBLER)
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