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8cc8aba19c
Summary: -march=bpf -> host endian -march=bpf_le -> little endian -match=bpf_be -> big endian Test Plan: v1 was tested by IBM s390 guys and appears to be working there. It bit rots too fast here. Reviewers: chandlerc, tstellarAMD Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10177 llvm-svn: 239071
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//===-- BPFELFObjectWriter.cpp - BPF 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/BPFMCTargetDesc.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 BPFELFObjectWriter : public MCELFObjectTargetWriter {
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public:
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BPFELFObjectWriter(uint8_t OSABI);
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~BPFELFObjectWriter() override;
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protected:
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unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
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bool IsPCRel) const override;
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};
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}
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BPFELFObjectWriter::BPFELFObjectWriter(uint8_t OSABI)
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: MCELFObjectTargetWriter(/*Is64Bit*/ true, OSABI, ELF::EM_NONE,
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/*HasRelocationAddend*/ false) {}
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BPFELFObjectWriter::~BPFELFObjectWriter() {}
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unsigned BPFELFObjectWriter::GetRelocType(const MCValue &Target,
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const MCFixup &Fixup,
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bool IsPCRel) const {
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// determine the type of the relocation
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switch ((unsigned)Fixup.getKind()) {
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default:
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llvm_unreachable("invalid fixup kind!");
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case FK_SecRel_8:
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return ELF::R_X86_64_64;
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case FK_SecRel_4:
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return ELF::R_X86_64_PC32;
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}
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}
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MCObjectWriter *llvm::createBPFELFObjectWriter(raw_pwrite_stream &OS,
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uint8_t OSABI, bool IsLittleEndian) {
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MCELFObjectTargetWriter *MOTW = new BPFELFObjectWriter(OSABI);
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return createELFObjectWriter(MOTW, OS, IsLittleEndian);
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}
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