| /* |
| * 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 "ArithProfile.h" |
| #include "BytecodeStructs.h" |
| #include "CallLinkStatus.h" |
| #include "CodeBlock.h" |
| #include "Error.h" |
| #include "HeapInlines.h" |
| #include "InterpreterInlines.h" |
| #include "PolymorphicAccess.h" |
| #include "PutByIdFlags.h" |
| #include "StructureInlines.h" |
| #include "ToThisStatus.h" |
| #include "UnlinkedCodeBlock.h" |
| #include "UnlinkedMetadataTableInlines.h" |
| |
| namespace JSC { |
| |
| template<class Block> |
| VM& BytecodeDumper<Block>::vm() const |
| { |
| return block()->vm(); |
| } |
| |
| template<class Block> |
| const Identifier& BytecodeDumper<Block>::identifier(int index) const |
| { |
| return block()->identifier(index); |
| } |
| |
| static ALWAYS_INLINE bool isConstantRegisterIndex(int index) |
| { |
| return index >= FirstConstantRegisterIndex; |
| } |
| |
| template<class Block> |
| CString BytecodeDumper<Block>::registerName(int r) const |
| { |
| if (isConstantRegisterIndex(r)) |
| return constantName(r); |
| |
| return toCString(VirtualRegister(r)); |
| } |
| |
| template<class Block> |
| CString BytecodeDumper<Block>::constantName(int index) const |
| { |
| JSValue value = block()->getConstant(index); |
| return toCString(value, "(", VirtualRegister(index), ")"); |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::printLocationAndOp(InstructionStream::Offset location, const char* op) |
| { |
| m_currentLocation = location; |
| m_out.printf("[%4u] %-18s ", location, op); |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpBytecode(const InstructionStream::Ref& it, const ICStatusMap&) |
| { |
| ::JSC::dumpBytecode(this, it.offset(), it.ptr()); |
| 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> |
| void BytecodeDumper<Block>::dumpIdentifiers() |
| { |
| if (size_t count = block()->numberOfIdentifiers()) { |
| m_out.printf("\nIdentifiers:\n"); |
| size_t i = 0; |
| do { |
| m_out.print(" id", static_cast<unsigned>(i), " = ", identifier(i), "\n"); |
| ++i; |
| } while (i != count); |
| } |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpConstants() |
| { |
| if (!block()->constantRegisters().isEmpty()) { |
| m_out.printf("\nConstants:\n"); |
| size_t i = 0; |
| for (const auto& constant : block()->constantRegisters()) { |
| const char* sourceCodeRepresentationDescription = nullptr; |
| switch (block()->constantsSourceCodeRepresentation()[i]) { |
| case SourceCodeRepresentation::Double: |
| sourceCodeRepresentationDescription = ": in source as double"; |
| break; |
| case SourceCodeRepresentation::Integer: |
| sourceCodeRepresentationDescription = ": in source as integer"; |
| break; |
| case SourceCodeRepresentation::Other: |
| sourceCodeRepresentationDescription = ""; |
| break; |
| } |
| m_out.printf(" k%u = %s%s\n", static_cast<unsigned>(i), toCString(constant.get()).data(), sourceCodeRepresentationDescription); |
| ++i; |
| } |
| } |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpExceptionHandlers() |
| { |
| if (unsigned count = block()->numberOfExceptionHandlers()) { |
| m_out.printf("\nException Handlers:\n"); |
| unsigned i = 0; |
| do { |
| const auto& handler = block()->exceptionHandler(i); |
| 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 BytecodeDumper<Block>::dumpSwitchJumpTables() |
| { |
| if (unsigned count = block()->numberOfSwitchJumpTables()) { |
| m_out.printf("Switch Jump Tables:\n"); |
| unsigned i = 0; |
| do { |
| m_out.printf(" %1d = {\n", i); |
| const auto& switchJumpTable = block()->switchJumpTable(i); |
| int entry = 0; |
| auto end = switchJumpTable.branchOffsets.end(); |
| for (auto iter = switchJumpTable.branchOffsets.begin(); iter != end; ++iter, ++entry) { |
| if (!*iter) |
| continue; |
| m_out.printf("\t\t%4d => %04d\n", entry + switchJumpTable.min, *iter); |
| } |
| m_out.printf(" }\n"); |
| ++i; |
| } while (i < count); |
| } |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpStringSwitchJumpTables() |
| { |
| if (unsigned count = block()->numberOfStringSwitchJumpTables()) { |
| m_out.printf("\nString Switch Jump Tables:\n"); |
| unsigned i = 0; |
| do { |
| m_out.printf(" %1d = {\n", i); |
| const auto& stringSwitchJumpTable = block()->stringSwitchJumpTable(i); |
| auto end = stringSwitchJumpTable.offsetTable.end(); |
| for (auto iter = stringSwitchJumpTable.offsetTable.begin(); iter != end; ++iter) |
| m_out.printf("\t\t\"%s\" => %04d\n", iter->key->utf8().data(), iter->value.branchOffset); |
| m_out.printf(" }\n"); |
| ++i; |
| } while (i < count); |
| } |
| } |
| |
| template<class Block> |
| void BytecodeDumper<Block>::dumpBlock(Block* block, const InstructionStream& instructions, PrintStream& out, const ICStatusMap& statusMap) |
| { |
| 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"); |
| |
| BytecodeDumper<Block> dumper(block, out); |
| for (const auto& it : instructions) |
| dumper.dumpBytecode(it, statusMap); |
| |
| dumper.dumpIdentifiers(); |
| dumper.dumpConstants(); |
| dumper.dumpExceptionHandlers(); |
| dumper.dumpSwitchJumpTables(); |
| dumper.dumpStringSwitchJumpTables(); |
| |
| out.printf("\n"); |
| } |
| |
| template class BytecodeDumper<UnlinkedCodeBlock>; |
| template class BytecodeDumper<CodeBlock>; |
| |
| } |
