| //===-- WebAssemblyELFObjectWriter.cpp - WebAssembly ELF Writer -----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// \brief This file handles ELF-specific object emission, converting LLVM's |
| /// internal fixups into the appropriate relocations. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "MCTargetDesc/WebAssemblyMCTargetDesc.h" |
| #include "llvm/MC/MCELFObjectWriter.h" |
| #include "llvm/MC/MCFixup.h" |
| #include "llvm/Support/ErrorHandling.h" |
| using namespace llvm; |
| |
| namespace { |
| class WebAssemblyELFObjectWriter final : public MCELFObjectTargetWriter { |
| public: |
| WebAssemblyELFObjectWriter(bool Is64Bit, uint8_t OSABI); |
| |
| protected: |
| unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup, |
| bool IsPCRel) const override; |
| }; |
| } // end anonymous namespace |
| |
| // FIXME: Use EM_NONE as a temporary hack. Should we decide to pursue ELF |
| // writing seriously, we should email generic-abi@googlegroups.com and ask |
| // for our own ELF code. |
| WebAssemblyELFObjectWriter::WebAssemblyELFObjectWriter(bool Is64Bit, |
| uint8_t OSABI) |
| : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_NONE, |
| /*HasRelocationAddend=*/true) {} |
| |
| unsigned WebAssemblyELFObjectWriter::GetRelocType(const MCValue &Target, |
| const MCFixup &Fixup, |
| bool IsPCRel) const { |
| // FIXME: Do we need our own relocs? |
| return Fixup.getKind(); |
| } |
| |
| MCObjectWriter *llvm::createWebAssemblyELFObjectWriter(raw_pwrite_stream &OS, |
| bool Is64Bit, |
| uint8_t OSABI) { |
| MCELFObjectTargetWriter *MOTW = |
| new WebAssemblyELFObjectWriter(Is64Bit, OSABI); |
| return createELFObjectWriter(MOTW, OS, /*IsLittleEndian=*/true); |
| } |