1 //===-- BPFELFObjectWriter.cpp - BPF ELF Writer ---------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "MCTargetDesc/BPFMCTargetDesc.h"
11 #include "llvm/MC/MCELFObjectWriter.h"
12 #include "llvm/MC/MCFixup.h"
13 #include "llvm/Support/ErrorHandling.h"
18 class BPFELFObjectWriter : public MCELFObjectTargetWriter {
20 BPFELFObjectWriter(uint8_t OSABI);
22 ~BPFELFObjectWriter() override;
25 unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
26 bool IsPCRel) const override;
30 BPFELFObjectWriter::BPFELFObjectWriter(uint8_t OSABI)
31 : MCELFObjectTargetWriter(/*Is64Bit*/ true, OSABI, ELF::EM_NONE,
32 /*HasRelocationAddend*/ false) {}
34 BPFELFObjectWriter::~BPFELFObjectWriter() {}
36 unsigned BPFELFObjectWriter::GetRelocType(const MCValue &Target,
39 // determine the type of the relocation
40 switch ((unsigned)Fixup.getKind()) {
42 llvm_unreachable("invalid fixup kind!");
44 return ELF::R_X86_64_64;
46 return ELF::R_X86_64_PC32;
50 MCObjectWriter *llvm::createBPFELFObjectWriter(raw_pwrite_stream &OS,
51 uint8_t OSABI, bool IsLittleEndian) {
52 MCELFObjectTargetWriter *MOTW = new BPFELFObjectWriter(OSABI);
53 return createELFObjectWriter(MOTW, OS, IsLittleEndian);