| /* |
| * Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com> |
| * Copyright (C) 2017-2019 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. AND ITS CONTRIBUTORS ``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 ITS 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. |
| */ |
| |
| #include "config.h" |
| #include "BytecodeDumper.h" |
| |
| #include "BytecodeGenerator.h" |
| #include "BytecodeGraph.h" |
| #include "BytecodeStructs.h" |
| #include "CodeBlock.h" |
| #include "JSCJSValueInlines.h" |
| #include "UnlinkedCodeBlockGenerator.h" |
| #include "UnlinkedMetadataTableInlines.h" |
| #include "WasmFunctionCodeBlock.h" |
| #include "WasmGeneratorTraits.h" |
| #include "WasmModuleInformation.h" |
| #include "WasmSignatureInlines.h" |
| |
| namespace JSC { |
| |
| void BytecodeDumperBase::printLocationAndOp(InstructionStream::Offset location, const char* op) |
| { |
| m_currentLocation = location; |
| m_out.printf("[%4u] %-18s ", location, op); |
| } |
| |
| void BytecodeDumperBase::dumpValue(VirtualRegister reg) |
| { |
| m_out.printf("%s", registerName(reg).data()); |
| } |
| |
| template<typename Traits> |
| void BytecodeDumperBase::dumpValue(GenericBoundLabel<Traits> label) |
| { |
| int target = label.target(); |
| if (!target) |
| target = outOfLineJumpOffset(m_currentLocation); |
| InstructionStream::Offset targetOffset = target + m_currentLocation; |
| m_out.print(target, "(->", targetOffset, ")"); |
| } |
| |
| template void BytecodeDumperBase::dumpValue(GenericBoundLabel<JSGeneratorTraits>); |
| |
| #if ENABLE(WEBASSEMBLY) |
| template void BytecodeDumperBase::dumpValue(GenericBoundLabel<Wasm::GeneratorTraits>); |
| #endif // ENABLE(WEBASSEMBLY) |
| |
| template<class Block> |
| CString BytecodeDumper<Block>::registerName(VirtualRegister r) const |
| { |
| if (r.isConstant()) |
| return constantName(r); |
| |
| return toCString(r); |
| } |
| |
| template <class Block> |
| int BytecodeDumper<Block>::outOfLineJumpOffset(InstructionStream::Offset offset) const |
| { |
| return m_block->outOfLineJumpOffset(offset); |
| } |
| |
| template<class Block> |
| CString BytecodeDumper<Block>::constantName(VirtualRegister reg) const |
| { |
| auto value = block()->getConstant(reg); |
| return toCString(value, "(", reg, ")"); |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpBytecode(const InstructionStream::Ref& it, const ICStatusMap&) |
| { |
| ::JSC::dumpBytecode(this, it.offset(), it.ptr()); |
| this->m_out.print("\n"); |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpBytecode(Block* block, PrintStream& out, const InstructionStream::Ref& it, const ICStatusMap& statusMap) |
| { |
| BytecodeDumper dumper(block, out); |
| dumper.dumpBytecode(it, statusMap); |
| } |
| |
| template<class Block> |
| VM& CodeBlockBytecodeDumper<Block>::vm() const |
| { |
| return this->block()->vm(); |
| } |
| |
| template<class Block> |
| const Identifier& CodeBlockBytecodeDumper<Block>::identifier(int index) const |
| { |
| return this->block()->identifier(index); |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpIdentifiers() |
| { |
| if (size_t count = this->block()->numberOfIdentifiers()) { |
| this->m_out.printf("\nIdentifiers:\n"); |
| size_t i = 0; |
| do { |
| this->m_out.print(" id", static_cast<unsigned>(i), " = ", identifier(i), "\n"); |
| ++i; |
| } while (i != count); |
| } |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpConstants() |
| { |
| if (!this->block()->constantRegisters().isEmpty()) { |
| this->m_out.printf("\nConstants:\n"); |
| size_t i = 0; |
| for (const auto& constant : this->block()->constantRegisters()) { |
| const char* sourceCodeRepresentationDescription = nullptr; |
| switch (this->block()->constantSourceCodeRepresentation(i)) { |
| case SourceCodeRepresentation::Double: |
| sourceCodeRepresentationDescription = ": in source as double"; |
| break; |
| case SourceCodeRepresentation::Integer: |
| sourceCodeRepresentationDescription = ": in source as integer"; |
| break; |
| case SourceCodeRepresentation::Other: |
| sourceCodeRepresentationDescription = ""; |
| break; |
| case SourceCodeRepresentation::LinkTimeConstant: |
| sourceCodeRepresentationDescription = ": in source as link-time-constant"; |
| break; |
| } |
| this->m_out.printf(" k%u = %s%s\n", static_cast<unsigned>(i), toCString(constant.get()).data(), sourceCodeRepresentationDescription); |
| ++i; |
| } |
| } |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpExceptionHandlers() |
| { |
| if (unsigned count = this->block()->numberOfExceptionHandlers()) { |
| this->m_out.printf("\nException Handlers:\n"); |
| unsigned i = 0; |
| do { |
| const auto& handler = this->block()->exceptionHandler(i); |
| this->m_out.printf("\t %d: { start: [%4d] end: [%4d] target: [%4d] } %s\n", i + 1, handler.start, handler.end, handler.target, handler.typeName()); |
| ++i; |
| } while (i < count); |
| } |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpSwitchJumpTables() |
| { |
| if (unsigned count = this->block()->numberOfUnlinkedSwitchJumpTables()) { |
| this->m_out.printf("Switch Jump Tables:\n"); |
| unsigned i = 0; |
| do { |
| this->m_out.printf(" %1d = {\n", i); |
| const auto& switchJumpTable = this->block()->unlinkedSwitchJumpTable(i); |
| int entry = 0; |
| auto end = switchJumpTable.m_branchOffsets.end(); |
| for (auto iter = switchJumpTable.m_branchOffsets.begin(); iter != end; ++iter, ++entry) { |
| if (!*iter) |
| continue; |
| this->m_out.printf("\t\t%4d => %04d\n", entry + switchJumpTable.m_min, *iter); |
| } |
| this->m_out.printf(" }\n"); |
| ++i; |
| } while (i < count); |
| } |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpStringSwitchJumpTables() |
| { |
| if (unsigned count = this->block()->numberOfUnlinkedStringSwitchJumpTables()) { |
| this->m_out.printf("\nString Switch Jump Tables:\n"); |
| unsigned i = 0; |
| do { |
| this->m_out.printf(" %1d = {\n", i); |
| for (const auto& entry : this->block()->unlinkedStringSwitchJumpTable(i).m_offsetTable) |
| this->m_out.printf("\t\t\"%s\" => %04d\n", entry.key->utf8().data(), entry.value.m_branchOffset); |
| this->m_out.printf(" }\n"); |
| ++i; |
| } while (i < count); |
| } |
| } |
| |
| template <typename Block> |
| static void dumpHeader(Block* block, const InstructionStream& instructions, PrintStream& out) |
| { |
| size_t instructionCount = 0; |
| size_t wide16InstructionCount = 0; |
| size_t wide32InstructionCount = 0; |
| size_t instructionWithMetadataCount = 0; |
| |
| for (const auto& instruction : instructions) { |
| if (instruction->isWide16()) |
| ++wide16InstructionCount; |
| else if (instruction->isWide32()) |
| ++wide32InstructionCount; |
| if (instruction->hasMetadata()) |
| ++instructionWithMetadataCount; |
| ++instructionCount; |
| } |
| |
| out.print(*block); |
| out.printf( |
| ": %lu instructions (%lu 16-bit instructions, %lu 32-bit instructions, %lu instructions with metadata); %lu bytes (%lu metadata bytes); %d parameter(s); %d callee register(s); %d variable(s)", |
| static_cast<unsigned long>(instructionCount), |
| static_cast<unsigned long>(wide16InstructionCount), |
| static_cast<unsigned long>(wide32InstructionCount), |
| static_cast<unsigned long>(instructionWithMetadataCount), |
| static_cast<unsigned long>(instructions.sizeInBytes() + block->metadataSizeInBytes()), |
| static_cast<unsigned long>(block->metadataSizeInBytes()), |
| block->numParameters(), block->numCalleeLocals(), block->numVars()); |
| out.print("; scope at ", block->scopeRegister()); |
| out.printf("\n"); |
| } |
| |
| template <typename Dumper> |
| static void dumpFooter(Dumper& dumper) |
| { |
| dumper.dumpIdentifiers(); |
| dumper.dumpConstants(); |
| dumper.dumpExceptionHandlers(); |
| dumper.dumpSwitchJumpTables(); |
| dumper.dumpStringSwitchJumpTables(); |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpBlock(Block* block, const InstructionStream& instructions, PrintStream& out, const ICStatusMap& statusMap) |
| { |
| dumpHeader(block, instructions, out); |
| |
| CodeBlockBytecodeDumper<Block> dumper(block, out); |
| for (const auto& it : instructions) |
| dumper.dumpBytecode(it, statusMap); |
| |
| dumpFooter(dumper); |
| |
| out.printf("\n"); |
| } |
| |
| template<class Block> |
| void CodeBlockBytecodeDumper<Block>::dumpGraph(Block* block, const InstructionStream& instructions, BytecodeGraph& graph, PrintStream& out, const ICStatusMap& icStatusMap) |
| { |
| dumpHeader(block, instructions, out); |
| |
| CodeBlockBytecodeDumper<Block> dumper(block, out); |
| |
| out.printf("\n"); |
| |
| Vector<Vector<unsigned>> predecessors; |
| predecessors.resize(graph.size()); |
| for (auto& block : graph) { |
| if (block.isEntryBlock() || block.isExitBlock()) |
| continue; |
| for (auto successorIndex : block.successors()) { |
| if (!predecessors[successorIndex].contains(block.index())) |
| predecessors[successorIndex].append(block.index()); |
| } |
| } |
| |
| for (BytecodeBasicBlock& block : graph) { |
| if (block.isEntryBlock() || block.isExitBlock()) |
| continue; |
| |
| out.print("bb#", block.index(), "\n"); |
| |
| out.print("Predecessors: ["); |
| for (unsigned predecessor : predecessors[block.index()]) { |
| if (!graph[predecessor].isEntryBlock()) |
| out.print(" #", predecessor); |
| } |
| out.print(" ]\n"); |
| |
| for (unsigned i = 0; i < block.totalLength(); ) { |
| auto& currentInstruction = instructions.at(i + block.leaderOffset()); |
| dumper.dumpBytecode(currentInstruction, icStatusMap); |
| i += currentInstruction.ptr()->size(); |
| } |
| |
| out.print("Successors: ["); |
| for (unsigned successor : block.successors()) { |
| if (!graph[successor].isExitBlock()) |
| out.print(" #", successor); |
| } |
| out.print(" ]\n\n"); |
| } |
| |
| dumpFooter(dumper); |
| |
| out.printf("\n"); |
| } |
| |
| template class BytecodeDumper<CodeBlock>; |
| template class CodeBlockBytecodeDumper<UnlinkedCodeBlockGenerator>; |
| template class CodeBlockBytecodeDumper<CodeBlock>; |
| |
| #if ENABLE(WEBASSEMBLY) |
| |
| namespace Wasm { |
| |
| void BytecodeDumper::dumpBlock(FunctionCodeBlock* block, const ModuleInformation& moduleInformation, PrintStream& out) |
| { |
| size_t instructionCount = 0; |
| size_t wide16InstructionCount = 0; |
| size_t wide32InstructionCount = 0; |
| |
| for (auto it = block->instructions().begin(); it != block->instructions().end(); it += it->size<WasmOpcodeTraits>()) { |
| if (it->isWide16()) |
| ++wide16InstructionCount; |
| else if (it->isWide32()) |
| ++wide32InstructionCount; |
| ++instructionCount; |
| } |
| |
| size_t functionIndexSpace = moduleInformation.importFunctionCount() + block->functionIndex(); |
| out.print(makeString(IndexOrName(functionIndexSpace, moduleInformation.nameSection->get(functionIndexSpace)))); |
| |
| const auto& function = moduleInformation.functions[block->functionIndex()]; |
| SignatureIndex signatureIndex = moduleInformation.internalFunctionSignatureIndices[block->functionIndex()]; |
| const Signature& signature = SignatureInformation::get(signatureIndex); |
| out.print(" : ", signature, "\n"); |
| out.print("wasm size: ", function.data.size(), " bytes\n"); |
| |
| out.printf( |
| "bytecode: %lu instructions (%lu 16-bit instructions, %lu 32-bit instructions); %lu bytes; %d parameter(s); %d local(s); %d callee register(s)\n", |
| static_cast<unsigned long>(instructionCount), |
| static_cast<unsigned long>(wide16InstructionCount), |
| static_cast<unsigned long>(wide32InstructionCount), |
| static_cast<unsigned long>(block->instructions().sizeInBytes()), |
| block->numArguments(), |
| block->numVars(), |
| block->numCalleeLocals()); |
| |
| BytecodeDumper dumper(block, out); |
| for (auto it = block->instructions().begin(); it != block->instructions().end(); it += it->size<WasmOpcodeTraits>()) { |
| dumpWasm(&dumper, it.offset(), it.ptr()); |
| out.print("\n"); |
| } |
| |
| dumper.dumpConstants(); |
| |
| out.printf("\n"); |
| } |
| |
| void BytecodeDumper::dumpConstants() |
| { |
| FunctionCodeBlock* block = this->block(); |
| if (!block->constants().isEmpty()) { |
| this->m_out.printf("\nConstants:\n"); |
| unsigned i = 0; |
| for (const auto& constant : block->constants()) { |
| Type type = block->constantTypes()[i]; |
| this->m_out.print(" const", i, " : ", type.kind, " = ", formatConstant(type, constant), "\n"); |
| ++i; |
| } |
| } |
| } |
| |
| CString BytecodeDumper::constantName(VirtualRegister index) const |
| { |
| FunctionCodeBlock* block = this->block(); |
| auto value = formatConstant(block->getConstantType(index), block->getConstant(index)); |
| return toCString(value, "(", VirtualRegister(index), ")"); |
| } |
| |
| CString BytecodeDumper::formatConstant(Type type, uint64_t constant) const |
| { |
| switch (type.kind) { |
| case TypeKind::I32: |
| return toCString(static_cast<int32_t>(constant)); |
| case TypeKind::I64: |
| return toCString(constant); |
| case TypeKind::F32: |
| return toCString(bitwise_cast<float>(static_cast<int32_t>(constant))); |
| break; |
| case TypeKind::F64: |
| return toCString(bitwise_cast<double>(constant)); |
| break; |
| case TypeKind::Externref: |
| case TypeKind::Funcref: |
| if (JSValue::decode(constant) == jsNull()) |
| return "null"; |
| return toCString(RawPointer(bitwise_cast<void*>(constant))); |
| default: |
| RELEASE_ASSERT_NOT_REACHED(); |
| return ""; |
| } |
| } |
| |
| } // namespace Wasm |
| |
| #endif // ENABLE(WEBASSEMBLY) |
| } |
