BPFELFObjectWriter.cpp [plain text]
#include "MCTargetDesc/BPFMCTargetDesc.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCFixup.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
namespace {
class BPFELFObjectWriter : public MCELFObjectTargetWriter {
public:
BPFELFObjectWriter(uint8_t OSABI);
~BPFELFObjectWriter() override;
protected:
unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel) const override;
};
}
BPFELFObjectWriter::BPFELFObjectWriter(uint8_t OSABI)
: MCELFObjectTargetWriter( true, OSABI, ELF::EM_NONE,
false) {}
BPFELFObjectWriter::~BPFELFObjectWriter() {}
unsigned BPFELFObjectWriter::GetRelocType(const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel) const {
switch ((unsigned)Fixup.getKind()) {
default:
llvm_unreachable("invalid fixup kind!");
case FK_SecRel_8:
return ELF::R_X86_64_64;
case FK_SecRel_4:
return ELF::R_X86_64_PC32;
}
}
MCObjectWriter *llvm::createBPFELFObjectWriter(raw_ostream &OS, uint8_t OSABI) {
MCELFObjectTargetWriter *MOTW = new BPFELFObjectWriter(OSABI);
return createELFObjectWriter(MOTW, OS, true);
}