55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
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//===-- DisassemblerHelper.h ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// Helper class for decoding machine instructions and printing them in an
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/// assembler form.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_EXEGESIS_DISASSEMBLER_HELPER_H
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#define LLVM_TOOLS_LLVM_EXEGESIS_DISASSEMBLER_HELPER_H
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#include "LlvmState.h"
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#include "llvm/MC/MCAsmInfo.h"
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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 <memory>
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namespace llvm {
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namespace exegesis {
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// A helper class for decoding and printing machine instructions.
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class DisassemblerHelper {
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public:
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DisassemblerHelper(const LLVMState &State);
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void printInst(const MCInst *MI, raw_ostream &OS) const {
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const auto &STI = State_.getSubtargetInfo();
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InstPrinter_->printInst(MI, 0, "", STI, OS);
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}
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bool decodeInst(MCInst &MI, uint64_t &MISize, ArrayRef<uint8_t> Bytes) const {
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return Disasm_->getInstruction(MI, MISize, Bytes, 0, nulls());
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}
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private:
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const LLVMState &State_;
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std::unique_ptr<MCContext> Context_;
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std::unique_ptr<MCAsmInfo> AsmInfo_;
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std::unique_ptr<MCInstPrinter> InstPrinter_;
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std::unique_ptr<MCDisassembler> Disasm_;
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};
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} // namespace exegesis
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} // namespace llvm
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#endif // LLVM_TOOLS_LLVM_EXEGESIS_DISASSEMBLER_HELPER_H
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