78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
//===-- MBlazeELFObjectWriter.cpp - MBlaze ELF Writer ---------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MCTargetDesc/MBlazeMCTargetDesc.h"
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#include "llvm/MC/MCELFObjectWriter.h"
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#include "llvm/MC/MCFixup.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace llvm;
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namespace {
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class MBlazeELFObjectWriter : public MCELFObjectTargetWriter {
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public:
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MBlazeELFObjectWriter(uint8_t OSABI);
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virtual ~MBlazeELFObjectWriter();
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protected:
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virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
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bool IsPCRel, bool IsRelocWithSymbol,
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int64_t Addend) const;
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};
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}
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MBlazeELFObjectWriter::MBlazeELFObjectWriter(uint8_t OSABI)
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: MCELFObjectTargetWriter(/*Is64Bit*/ false, OSABI, ELF::EM_MBLAZE,
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/*HasRelocationAddend*/ false) {}
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MBlazeELFObjectWriter::~MBlazeELFObjectWriter() {
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}
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unsigned MBlazeELFObjectWriter::GetRelocType(const MCValue &Target,
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const MCFixup &Fixup,
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bool IsPCRel,
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bool IsRelocWithSymbol,
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int64_t Addend) const {
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// determine the type of the relocation
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unsigned Type;
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if (IsPCRel) {
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switch ((unsigned)Fixup.getKind()) {
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default:
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llvm_unreachable("Unimplemented");
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case FK_PCRel_4:
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Type = ELF::R_MICROBLAZE_64_PCREL;
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break;
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case FK_PCRel_2:
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Type = ELF::R_MICROBLAZE_32_PCREL;
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break;
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}
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} else {
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switch ((unsigned)Fixup.getKind()) {
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default: llvm_unreachable("invalid fixup kind!");
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case FK_Data_4:
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Type = ((IsRelocWithSymbol || Addend !=0)
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? ELF::R_MICROBLAZE_32
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: ELF::R_MICROBLAZE_64);
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break;
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case FK_Data_2:
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Type = ELF::R_MICROBLAZE_32;
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break;
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}
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}
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return Type;
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}
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MCObjectWriter *llvm::createMBlazeELFObjectWriter(raw_ostream &OS,
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uint8_t OSABI) {
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MCELFObjectTargetWriter *MOTW = new MBlazeELFObjectWriter(OSABI);
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return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/ false);
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}
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