forked from OSchip/llvm-project
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
//===- lib/ReaderWriter/MachO/ExecutableAtoms.hpp -------------------------===//
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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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#ifndef LLD_READER_WRITER_MACHO_EXECUTABLE_ATOMS_H
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#define LLD_READER_WRITER_MACHO_EXECUTABLE_ATOMS_H
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#include "llvm/Support/MachO.h"
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#include "lld/Core/DefinedAtom.h"
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#include "lld/Core/File.h"
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#include "lld/Core/LinkingContext.h"
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#include "lld/Core/Reference.h"
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#include "lld/Core/Simple.h"
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#include "lld/Core/UndefinedAtom.h"
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#include "lld/ReaderWriter/MachOLinkingContext.h"
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namespace lld {
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namespace mach_o {
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//
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// CRuntimeFile adds an UndefinedAtom for "_main" so that the Resolving
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// phase will fail if "_main" is undefined.
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//
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class CRuntimeFile : public SimpleFile {
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public:
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CRuntimeFile(const MachOLinkingContext &context)
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: SimpleFile("C runtime"),
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_undefMain(*this, context.entrySymbolName()),
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_undefBinder(*this, context.binderSymbolName()) {
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// only main executables need _main
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if (context.outputMachOType() == llvm::MachO::MH_EXECUTE) {
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this->addAtom(_undefMain);
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}
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// only dynamic binaries use stubs
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if (context.needsStubsPass()) {
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this->addAtom(_undefBinder);
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}
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}
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private:
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SimpleUndefinedAtom _undefMain;
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SimpleUndefinedAtom _undefBinder;
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};
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} // namespace mach_o
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} // namespace lld
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#endif // LLD_READER_WRITER_MACHO_EXECUTABLE_ATOMS_H
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