69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
//===- lib/ReaderWriter/ELF/WriterELF.cpp ---------------------------------===//
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//
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// The LLVM Linker
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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 "lld/ReaderWriter/Writer.h"
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#include "DynamicLibraryWriter.h"
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#include "ExecutableWriter.h"
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using namespace llvm;
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using namespace llvm::object;
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namespace lld {
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std::unique_ptr<Writer> createWriterELF(const ELFLinkingContext &info) {
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using llvm::object::ELFType;
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// Set the default layout to be the static executable layout
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// We would set the layout to a dynamic executable layout
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// if we came across any shared libraries in the process
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switch (info.getOutputELFType()) {
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case llvm::ELF::ET_EXEC:
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if (info.is64Bits()) {
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if (info.isLittleEndian())
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return std::unique_ptr<Writer>(new
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elf::ExecutableWriter<ELFType<support::little, 8, true>>(info));
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else
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return std::unique_ptr<Writer>(new
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elf::ExecutableWriter<ELFType<support::big, 8, true>>(info));
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} else {
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if (info.isLittleEndian())
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return std::unique_ptr<Writer>(new
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elf::ExecutableWriter<ELFType<support::little, 4, false>>(info));
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else
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return std::unique_ptr<Writer>(new
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elf::ExecutableWriter<ELFType<support::big, 4, false>>(info));
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}
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break;
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case llvm::ELF::ET_DYN:
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if (info.is64Bits()) {
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if (info.isLittleEndian())
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return std::unique_ptr<Writer>(new
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elf::DynamicLibraryWriter<ELFType<support::little, 8, true>>(info));
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else
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return std::unique_ptr<Writer>(new
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elf::DynamicLibraryWriter<ELFType<support::big, 8, true>>(info));
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} else {
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if (info.isLittleEndian())
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return std::unique_ptr<Writer>(new
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elf::DynamicLibraryWriter<ELFType<support::little, 4, false>>(info));
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else
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return std::unique_ptr<Writer>(new
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elf::DynamicLibraryWriter<ELFType<support::big, 4, false>>(info));
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}
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break;
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case llvm::ELF::ET_REL:
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llvm_unreachable("TODO: support -r mode");
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default:
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llvm_unreachable("unsupported output type");
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}
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}
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} // namespace lld
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