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/*
* Copyright (C) 2017-2024 Apple Inc. 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 CONSEQUARY 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.
*/
#include "config.h"
#include "WasmModuleDebugInfo.h"
#if ENABLE(WEBASSEMBLY)
#include "Options.h"
#include "WasmIPIntGenerator.h"
#include "WasmModuleInformation.h"
#include <wtf/DataLog.h>
#include <wtf/TZoneMallocInlines.h>
// Forward declaration to ensure proper linkage
namespace JSC {
namespace Wasm {
void parseForDebugInfo(std::span<const uint8_t>, const TypeDefinition&, ModuleInformation&, FunctionCodeIndex, FunctionDebugInfo&);
}
}
namespace JSC {
namespace Wasm {
WTF_MAKE_TZONE_ALLOCATED_IMPL(ModuleDebugInfo);
UncheckedKeyHashSet<uint32_t>* FunctionDebugInfo::findNextInstructions(uint32_t offset)
{
auto itr = offsetToNextInstructions.find(offset);
return itr == offsetToNextInstructions.end() ? nullptr : &itr->value;
}
void FunctionDebugInfo::addNextInstruction(uint32_t offset, uint32_t nextInstruction)
{
dataLogLnIf(Options::verboseWasmDebugger(), "[ModuleDebugInfo] addNextInstruction offset:", RawHex(offset), " nextInstruction:", RawHex(nextInstruction));
offsetToNextInstructions.add(offset, UncheckedKeyHashSet<uint32_t>()).iterator->value.add(nextInstruction);
}
void FunctionDebugInfo::addLocalType(Type type)
{
dataLogLnIf(Options::verboseWasmDebugger(), "[ModuleDebugInfo] addLocalType type:", type);
locals.append(type);
}
FunctionDebugInfo& ModuleDebugInfo::ensureFunctionDebugInfo(FunctionCodeIndex functionIndex)
{
RELEASE_ASSERT(functionIndex < moduleInfo->functions.size());
auto iterator = functionIndexToData.find(functionIndex);
if (iterator != functionIndexToData.end())
return iterator->value;
dataLogLnIf(Options::verboseWasmDebugger(), "[ModuleDebugInfo] Lazy collection for function ", functionIndex);
const auto& function = moduleInfo->functions[functionIndex];
FunctionSpaceIndex spaceIndex = moduleInfo->toSpaceIndex(functionIndex);
TypeIndex typeIndex = moduleInfo->typeIndexFromFunctionIndexSpace(spaceIndex);
auto& info = functionIndexToData.add(functionIndex, FunctionDebugInfo()).iterator->value;
auto functionData = source.subspan(function.start, function.data.size());
Ref typeDefinition = TypeInformation::get(typeIndex);
parseForDebugInfo(functionData, typeDefinition, moduleInfo, functionIndex, info);
dataLogLnIf(Options::verboseWasmDebugger(), "[ModuleDebugInfo] Debug info collection completed for function ", functionIndex, " with ", info.offsetToNextInstructions.size(), " instruction mappings and ", info.locals.size(), " locals");
return info;
}
} // namespace Wasm
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)
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