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