llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h

   1 //===-- BPFMCAsmInfo.h - BPF asm properties -------------------*- C++ -*--====//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file contains the declaration of the BPFMCAsmInfo class.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_BPF_MCTARGETDESC_BPFMCASMINFO_H
  14 #define LLVM_LIB_TARGET_BPF_MCTARGETDESC_BPFMCASMINFO_H
  15
  16 #include "llvm/ADT/Triple.h"
  17 #include "llvm/MC/MCAsmInfo.h"
  18
  19 namespace llvm {
  20
  21 class BPFMCAsmInfo : public MCAsmInfo {
  22 public:
  23   explicit BPFMCAsmInfo(const Triple &TT, const MCTargetOptions &Options) {
  24     if (TT.getArch() == Triple::bpfeb)
  25       IsLittleEndian = false;
  26
  27     PrivateGlobalPrefix = ".L";
  28     WeakRefDirective = "\t.weak\t";
  29
  30     UsesELFSectionDirectiveForBSS = true;
  31     HasSingleParameterDotFile = true;
  32     HasDotTypeDotSizeDirective = true;
  33
  34     SupportsDebugInformation = true;
  35     ExceptionsType = ExceptionHandling::DwarfCFI;
  36     MinInstAlignment = 8;
  37
  38     // the default is 4 and it only affects dwarf elf output
  39     // so if not set correctly, the dwarf data will be
  40     // messed up in random places by 4 bytes. .debug_line
  41     // section will be parsable, but with odd offsets and
  42     // line numbers, etc.
  43     CodePointerSize = 8;
  44
  45     UseIntegratedAssembler = false;
  46   }
  47
  48   void setDwarfUsesRelocationsAcrossSections(bool enable) {
  49     DwarfUsesRelocationsAcrossSections = enable;
  50   }
  51 };
  52 }
  53
  54 #endif