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1 //===- DefinedAtom.cpp ------------------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "llvm/Support/ErrorHandling.h"
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10 #include "lld/Core/DefinedAtom.h"
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11 #include "lld/Core/File.h"
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12
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13 namespace lld {
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14
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15 DefinedAtom::ContentPermissions DefinedAtom::permissions() const {
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16 // By default base permissions on content type.
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17 return permissions(this->contentType());
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18 }
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19
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20 // Utility function for deriving permissions from content type
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21 DefinedAtom::ContentPermissions DefinedAtom::permissions(ContentType type) {
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22 switch (type) {
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23 case typeCode:
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24 case typeResolver:
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25 case typeBranchIsland:
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26 case typeBranchShim:
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27 case typeStub:
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28 case typeStubHelper:
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29 case typeMachHeader:
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30 return permR_X;
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31
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32 case typeConstant:
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33 case typeCString:
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34 case typeUTF16String:
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35 case typeCFI:
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36 case typeLSDA:
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37 case typeLiteral4:
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38 case typeLiteral8:
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39 case typeLiteral16:
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40 case typeDTraceDOF:
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41 case typeCompactUnwindInfo:
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42 case typeProcessedUnwindInfo:
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43 case typeObjCImageInfo:
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44 case typeObjCMethodList:
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45 return permR__;
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46
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47 case typeData:
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48 case typeDataFast:
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49 case typeZeroFill:
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50 case typeZeroFillFast:
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51 case typeObjC1Class:
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52 case typeLazyPointer:
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53 case typeLazyDylibPointer:
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54 case typeNonLazyPointer:
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55 case typeThunkTLV:
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56 return permRW_;
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57
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58 case typeGOT:
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59 case typeConstData:
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60 case typeCFString:
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61 case typeInitializerPtr:
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62 case typeTerminatorPtr:
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63 case typeCStringPtr:
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64 case typeObjCClassPtr:
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65 case typeObjC2CategoryList:
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66 case typeInterposingTuples:
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67 case typeTLVInitialData:
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68 case typeTLVInitialZeroFill:
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69 case typeTLVInitializerPtr:
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70 return permRW_L;
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71
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72 case typeUnknown:
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73 case typeTempLTO:
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74 case typeSectCreate:
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75 case typeDSOHandle:
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76 return permUnknown;
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77 }
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78 llvm_unreachable("unknown content type");
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79 }
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80
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81 } // namespace
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