| /* Copyright 2017 The TensorFlow Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_COMPILER_XLA_SERVICE_CPU_DISASSEMBLER_H_ |
| #define TENSORFLOW_COMPILER_XLA_SERVICE_CPU_DISASSEMBLER_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCDisassembler/MCDisassembler.h" |
| #include "llvm/MC/MCInstPrinter.h" |
| #include "llvm/MC/MCInstrAnalysis.h" |
| #include "llvm/MC/MCObjectFileInfo.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| #include "llvm/Object/ObjectFile.h" |
| #include "llvm/Target/TargetMachine.h" |
| #include "tensorflow/compiler/xla/statusor.h" |
| #include "tensorflow/compiler/xla/types.h" |
| |
| namespace xla { |
| namespace cpu { |
| |
| struct DisassemblerResult { |
| DisassemblerResult(const string& text, size_t code_size_bytes) |
| : text(text), code_size_bytes(code_size_bytes) {} |
| |
| // The disassembled text sections of the object file. |
| string text; |
| // The total number of bytes of executable code in the object file. |
| uint64_t code_size_bytes; |
| }; |
| |
| // Class for disassembling object files (and potentially other constructs) into |
| // x86/ARM assembly. Builds all the LLVM disassembly and instruction printing |
| // constructs from a given TargetMachine. |
| class Disassembler { |
| public: |
| explicit Disassembler(const llvm::TargetMachine& target_machine); |
| |
| // Returns a DisassemblerResult for the given object file, containing the |
| // disassembled code. |
| // |
| // If we couldn't retrieve a disassembler for this platform, an error status |
| // is returned. |
| StatusOr<DisassemblerResult> DisassembleObjectFile( |
| const llvm::object::ObjectFile& object_file) const; |
| |
| private: |
| const llvm::MCSubtargetInfo& subtarget_info_; |
| std::unique_ptr<llvm::MCObjectFileInfo> objfile_info_; |
| std::unique_ptr<llvm::MCContext> mc_context_; |
| std::unique_ptr<llvm::MCDisassembler> disassembler_; |
| std::unique_ptr<llvm::MCInstPrinter> inst_printer_; |
| std::unique_ptr<llvm::MCInstrAnalysis> inst_analysis_; |
| }; |
| |
| } // namespace cpu |
| } // namespace xla |
| |
| #endif // TENSORFLOW_COMPILER_XLA_SERVICE_CPU_DISASSEMBLER_H_ |