| //===-- HexagonELFObjectWriter.cpp - Hexagon Target Descriptions ----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Hexagon.h" |
| #include "llvm/MC/MCAssembler.h" |
| #include "llvm/MC/MCELFObjectWriter.h" |
| #include "llvm/Support/Debug.h" |
| |
| #define DEBUG_TYPE "hexagon-elf-writer" |
| |
| using namespace llvm; |
| using namespace Hexagon; |
| |
| namespace { |
| |
| class HexagonELFObjectWriter : public MCELFObjectTargetWriter { |
| private: |
| StringRef CPU; |
| |
| public: |
| HexagonELFObjectWriter(uint8_t OSABI, StringRef C); |
| |
| virtual unsigned GetRelocType(MCValue const &Target, MCFixup const &Fixup, |
| bool IsPCRel) const override; |
| }; |
| } |
| |
| HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C) |
| : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON, |
| /*HasRelocationAddend*/ true), |
| CPU(C) {} |
| |
| unsigned HexagonELFObjectWriter::GetRelocType(MCValue const &/*Target*/, |
| MCFixup const &Fixup, |
| bool IsPCRel) const { |
| unsigned Type = (unsigned)ELF::R_HEX_NONE; |
| llvm::MCFixupKind Kind = Fixup.getKind(); |
| |
| switch (Kind) { |
| default: |
| DEBUG(dbgs() << "unrecognized relocation " << Fixup.getKind() << "\n"); |
| llvm_unreachable("Unimplemented Fixup kind!"); |
| break; |
| case FK_Data_4: |
| Type = (IsPCRel) ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32; |
| break; |
| } |
| return Type; |
| } |
| |
| MCObjectWriter *llvm::createHexagonELFObjectWriter(raw_ostream &OS, |
| uint8_t OSABI, |
| StringRef CPU) { |
| MCELFObjectTargetWriter *MOTW = new HexagonELFObjectWriter(OSABI, CPU); |
| return createELFObjectWriter(MOTW, OS, /*IsLittleEndian*/ true); |
| } |