BPFAsmPrinter.h

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//===-- BPFFrameLowering.h - Define frame lowering for BPF -----*- C++ -*--===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_BPF_BPFASMPRINTER_H
#define LLVM_LIB_TARGET_BPF_BPFASMPRINTER_H
 
#include "BPFTargetMachine.h"
#include "BTFDebug.h"
#include "llvm/CodeGen/AsmPrinter.h"
 
namespace llvm {
 
class BPFAsmPrinter : public AsmPrinter {
public:
  explicit BPFAsmPrinter(TargetMachine &TM,
                         std::unique_ptr<MCStreamer> Streamer)
      : AsmPrinter(TM, std::move(Streamer), ID), BTF(nullptr), TM(TM) {}
 
  StringRef getPassName() const override { return "BPF Assembly Printer"; }
  bool doInitialization(Module &M) override;
  bool doFinalization(Module &M) override;
  void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O);
  bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
                       const char *ExtraCode, raw_ostream &O) override;
  bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
                             const char *ExtraCode, raw_ostream &O) override;
 
  void emitInstruction(const MachineInstr *MI) override;
  void emitFunctionBodyEnd() override;
  MCSymbol *getJTPublicSymbol(unsigned JTI);
  void emitJumpTableInfo() override;
 
  static char ID;
 
private:
  BTFDebug *BTF;
  TargetMachine &TM;
  bool SawTrapCall = false;
 
  const BPFTargetMachine &getBTM() const;
};
 
} // namespace llvm
 
#endif /* LLVM_LIB_TARGET_BPF_BPFASMPRINTER_H */