| Nick Kledzik | cc3d2dc | 2013-01-09 01:17:12 +0000 | [diff] [blame^] | 1 | //===- DefinedAtom.cpp ------------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Linker |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "llvm/Support/ErrorHandling.h" |
| 11 | |
| 12 | #include "lld/Core/DefinedAtom.h" |
| 13 | |
| 14 | |
| 15 | namespace lld { |
| 16 | |
| 17 | |
| 18 | DefinedAtom::ContentPermissions DefinedAtom::permissions() const { |
| 19 | // By default base permissions on content type. |
| 20 | return permissions(this->contentType()); |
| 21 | } |
| 22 | |
| 23 | // Utility function for deriving permissions from content type |
| 24 | DefinedAtom::ContentPermissions DefinedAtom::permissions(ContentType type) { |
| 25 | switch (type) { |
| 26 | case typeCode: |
| 27 | case typeResolver: |
| 28 | case typeBranchIsland: |
| 29 | case typeBranchShim: |
| 30 | case typeStub: |
| 31 | case typeStubHelper: |
| 32 | return permR_X; |
| 33 | |
| 34 | case typeConstant: |
| 35 | case typeCString: |
| 36 | case typeUTF16String: |
| 37 | case typeCFI: |
| 38 | case typeLSDA: |
| 39 | case typeLiteral4: |
| 40 | case typeLiteral8: |
| 41 | case typeLiteral16: |
| 42 | case typeDTraceDOF: |
| 43 | case typeCompactUnwindInfo: |
| 44 | return permR__; |
| 45 | |
| 46 | case typeData: |
| 47 | case typeZeroFill: |
| 48 | case typeObjC1Class: |
| 49 | case typeLazyPointer: |
| 50 | case typeLazyDylibPointer: |
| 51 | case typeThunkTLV: |
| 52 | return permRW_; |
| 53 | |
| 54 | case typeGOT: |
| 55 | case typeConstData: |
| 56 | case typeCFString: |
| 57 | case typeInitializerPtr: |
| 58 | case typeTerminatorPtr: |
| 59 | case typeCStringPtr: |
| 60 | case typeObjCClassPtr: |
| 61 | case typeObjC2CategoryList: |
| 62 | case typeTLVInitialData: |
| 63 | case typeTLVInitialZeroFill: |
| 64 | case typeTLVInitializerPtr: |
| 65 | return permRW_L; |
| 66 | |
| 67 | case typeUnknown: |
| 68 | case typeTempLTO: |
| 69 | case typeFirstInSection: |
| 70 | case typeLastInSection: |
| 71 | return permUnknown; |
| 72 | } |
| 73 | llvm_unreachable("unknown content type"); |
| 74 | } |
| 75 | |
| 76 | |
| 77 | } // namespace |
| 78 | |