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//===-- 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"
#include "llvm/Support/raw_ostream.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);
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_pwrite_stream &OS,
uint8_t OSABI,
StringRef CPU) {
MCELFObjectTargetWriter *MOTW = new HexagonELFObjectWriter(OSABI, CPU);
return createELFObjectWriter(MOTW, OS, /*IsLittleEndian*/ true);
}
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