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