d4f414583a
The magic file which contained these symbols inherited from archive which meant that the resolver didn't add the required atoms as archive members only get added when referenced. Instead we now inherit from SimpleFile which always links in the atoms needed. The second issue was in the handling of these symbols when we emit the MachO. The mach header symbol needs to be in the atom list as it gets an offset (0), and being in the atom list makes sure it is emitted to the symbol table. DSO handles are not emitted to the symbol table. rdar://problem/24450654 llvm-svn: 259574
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
//===- DefinedAtom.cpp ------------------------------------------*- C++ -*-===//
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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 "llvm/Support/ErrorHandling.h"
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#include "lld/Core/DefinedAtom.h"
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#include "lld/Core/File.h"
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namespace lld {
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DefinedAtom::ContentPermissions DefinedAtom::permissions() const {
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// By default base permissions on content type.
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return permissions(this->contentType());
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}
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// Utility function for deriving permissions from content type
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DefinedAtom::ContentPermissions DefinedAtom::permissions(ContentType type) {
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switch (type) {
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case typeCode:
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case typeResolver:
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case typeBranchIsland:
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case typeBranchShim:
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case typeStub:
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case typeStubHelper:
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case typeMachHeader:
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return permR_X;
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case typeConstant:
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case typeCString:
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case typeUTF16String:
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case typeCFI:
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case typeLSDA:
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case typeLiteral4:
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case typeLiteral8:
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case typeLiteral16:
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case typeDTraceDOF:
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case typeCompactUnwindInfo:
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case typeProcessedUnwindInfo:
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case typeRONote:
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case typeNoAlloc:
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case typeObjCImageInfo:
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case typeObjCMethodList:
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return permR__;
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case typeData:
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case typeDataFast:
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case typeZeroFill:
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case typeZeroFillFast:
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case typeObjC1Class:
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case typeLazyPointer:
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case typeLazyDylibPointer:
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case typeThunkTLV:
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case typeRWNote:
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return permRW_;
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case typeGOT:
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case typeConstData:
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case typeCFString:
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case typeInitializerPtr:
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case typeTerminatorPtr:
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case typeCStringPtr:
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case typeObjCClassPtr:
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case typeObjC2CategoryList:
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case typeInterposingTuples:
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case typeTLVInitialData:
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case typeTLVInitialZeroFill:
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case typeTLVInitializerPtr:
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case typeThreadData:
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case typeThreadZeroFill:
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return permRW_L;
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case typeGroupComdat:
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case typeGnuLinkOnce:
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case typeUnknown:
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case typeTempLTO:
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case typeSectCreate:
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case typeDSOHandle:
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return permUnknown;
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}
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llvm_unreachable("unknown content type");
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}
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bool DefinedAtom::compareByPosition(const DefinedAtom *lhs,
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const DefinedAtom *rhs) {
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if (lhs == rhs)
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return false;
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const File *lhsFile = &lhs->file();
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const File *rhsFile = &rhs->file();
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if (lhsFile->ordinal() != rhsFile->ordinal())
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return lhsFile->ordinal() < rhsFile->ordinal();
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assert(lhs->ordinal() != rhs->ordinal());
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return lhs->ordinal() < rhs->ordinal();
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}
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} // namespace
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