llvm/lib/Target/Mips/MCTargetDesc/MipsWinCOFFObjectWriter.cpp

   1 //===- MipsWinCOFFObjectWriter.cpp------------------------------*- 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 #include "MCTargetDesc/MipsFixupKinds.h"
  10 #include "MCTargetDesc/MipsMCTargetDesc.h"
  11 #include "llvm/BinaryFormat/COFF.h"
  12 #include "llvm/MC/MCContext.h"
  13 #include "llvm/MC/MCWinCOFFObjectWriter.h"
  14
  15 using namespace llvm;
  16
  17 namespace {
  18
  19 class MipsWinCOFFObjectWriter : public MCWinCOFFObjectTargetWriter {
  20 public:
  21   MipsWinCOFFObjectWriter();
  22
  23   unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
  24                         const MCFixup &Fixup, bool IsCrossSection,
  25                         const MCAsmBackend &MAB) const override;
  26 };
  27
  28 } // end anonymous namespace
  29
  30 MipsWinCOFFObjectWriter::MipsWinCOFFObjectWriter()
  31     : MCWinCOFFObjectTargetWriter(COFF::IMAGE_FILE_MACHINE_R4000) {}
  32
  33 unsigned MipsWinCOFFObjectWriter::getRelocType(MCContext &Ctx,
  34                                                const MCValue &Target,
  35                                                const MCFixup &Fixup,
  36                                                bool IsCrossSection,
  37                                                const MCAsmBackend &MAB) const {
  38   unsigned FixupKind = Fixup.getKind();
  39
  40   switch (FixupKind) {
  41   case FK_Data_4:
  42     return COFF::IMAGE_REL_MIPS_REFWORD;
  43   case Mips::fixup_Mips_26:
  44     return COFF::IMAGE_REL_MIPS_JMPADDR;
  45   case Mips::fixup_Mips_HI16:
  46     return COFF::IMAGE_REL_MIPS_REFHI;
  47   case Mips::fixup_Mips_LO16:
  48     return COFF::IMAGE_REL_MIPS_REFLO;
  49   default:
  50     Ctx.reportError(Fixup.getLoc(), "unsupported relocation type");
  51     return COFF::IMAGE_REL_MIPS_REFWORD;
  52   }
  53 }
  54
  55 std::unique_ptr<MCObjectTargetWriter> llvm::createMipsWinCOFFObjectWriter() {
  56   return std::make_unique<MipsWinCOFFObjectWriter>();
  57 }