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//===-- 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);
~WebAssemblyELFObjectWriter() override;
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) {}
WebAssemblyELFObjectWriter::~WebAssemblyELFObjectWriter() {}
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);
}
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