1 //===---------- ObjectFormats.cpp - Object format details for ORC ---------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // ORC-specific object format details. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/ExecutionEngine/Orc/Shared/ObjectFormats.h" 14 15 namespace llvm { 16 namespace orc { 17 18 StringRef MachODataCommonSectionName = "__DATA,__common"; 19 StringRef MachODataDataSectionName = "__DATA,__data"; 20 StringRef MachOEHFrameSectionName = "__TEXT,__eh_frame"; 21 StringRef MachOCompactUnwindInfoSectionName = "__TEXT,__unwind_info"; 22 StringRef MachOModInitFuncSectionName = "__DATA,__mod_init_func"; 23 StringRef MachOObjCCatListSectionName = "__DATA,__objc_catlist"; 24 StringRef MachOObjCCatList2SectionName = "__DATA,__objc_catlist2"; 25 StringRef MachOObjCClassListSectionName = "__DATA,__objc_classlist"; 26 StringRef MachOObjCClassNameSectionName = "__TEXT,__objc_classname"; 27 StringRef MachOObjCClassRefsSectionName = "__DATA,__objc_classrefs"; 28 StringRef MachOObjCConstSectionName = "__DATA,__objc_const"; 29 StringRef MachOObjCDataSectionName = "__DATA,__objc_data"; 30 StringRef MachOObjCImageInfoSectionName = "__DATA,__objc_imageinfo"; 31 StringRef MachOObjCMethNameSectionName = "__TEXT,__objc_methname"; 32 StringRef MachOObjCMethTypeSectionName = "__TEXT,__objc_methtype"; 33 StringRef MachOObjCNLCatListSectionName = "__DATA,__objc_nlcatlist"; 34 StringRef MachOObjCSelRefsSectionName = "__DATA,__objc_selrefs"; 35 StringRef MachOSwift5ProtoSectionName = "__TEXT,__swift5_proto"; 36 StringRef MachOSwift5ProtosSectionName = "__TEXT,__swift5_protos"; 37 StringRef MachOSwift5TypesSectionName = "__TEXT,__swift5_types"; 38 StringRef MachOSwift5TypeRefSectionName = "__TEXT,__swift5_typeref"; 39 StringRef MachOSwift5FieldMetadataSectionName = "__TEXT,__swift5_fieldmd"; 40 StringRef MachOSwift5EntrySectionName = "__TEXT,__swift5_entry"; 41 StringRef MachOThreadBSSSectionName = "__DATA,__thread_bss"; 42 StringRef MachOThreadDataSectionName = "__DATA,__thread_data"; 43 StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars"; 44 45 StringRef MachOInitSectionNames[19] = { 46 MachOModInitFuncSectionName, MachOObjCCatListSectionName, 47 MachOObjCCatList2SectionName, MachOObjCClassListSectionName, 48 MachOObjCClassNameSectionName, MachOObjCClassRefsSectionName, 49 MachOObjCConstSectionName, MachOObjCDataSectionName, 50 MachOObjCImageInfoSectionName, MachOObjCMethNameSectionName, 51 MachOObjCMethTypeSectionName, MachOObjCNLCatListSectionName, 52 MachOObjCSelRefsSectionName, MachOSwift5ProtoSectionName, 53 MachOSwift5ProtosSectionName, MachOSwift5TypesSectionName, 54 MachOSwift5TypeRefSectionName, MachOSwift5FieldMetadataSectionName, 55 MachOSwift5EntrySectionName, 56 }; 57 58 StringRef ELFEHFrameSectionName = ".eh_frame"; 59 60 StringRef ELFInitArrayFuncSectionName = ".init_array"; 61 StringRef ELFInitFuncSectionName = ".init"; 62 StringRef ELFFiniArrayFuncSectionName = ".fini_array"; 63 StringRef ELFFiniFuncSectionName = ".fini"; 64 StringRef ELFCtorArrayFuncSectionName = ".ctors"; 65 StringRef ELFDtorArrayFuncSectionName = ".dtors"; 66 67 StringRef ELFInitSectionNames[3]{ 68 ELFInitArrayFuncSectionName, 69 ELFInitFuncSectionName, 70 ELFCtorArrayFuncSectionName, 71 }; 72 73 StringRef ELFThreadBSSSectionName = ".tbss"; 74 StringRef ELFThreadDataSectionName = ".tdata"; 75 76 bool isMachOInitializerSection(StringRef SegName, StringRef SecName) { 77 for (auto &InitSection : MachOInitSectionNames) { 78 // Loop below assumes all MachO init sectios have a length-6 79 // segment name. 80 assert(InitSection[6] == ',' && "Init section seg name has length != 6"); 81 if (InitSection.starts_with(SegName) && InitSection.substr(7) == SecName) 82 return true; 83 } 84 return false; 85 } 86 87 bool isMachOInitializerSection(StringRef QualifiedName) { 88 for (auto &InitSection : MachOInitSectionNames) 89 if (InitSection == QualifiedName) 90 return true; 91 return false; 92 } 93 94 bool isELFInitializerSection(StringRef SecName) { 95 for (StringRef InitSection : ELFInitSectionNames) { 96 StringRef Name = SecName; 97 if (Name.consume_front(InitSection) && (Name.empty() || Name[0] == '.')) 98 return true; 99 } 100 return false; 101 } 102 103 bool isCOFFInitializerSection(StringRef SecName) { 104 return SecName.startswith(".CRT"); 105 } 106 107 } // namespace orc 108 } // namespace llvm 109