llvm/lib/ExecutionEngine/Orc/Shared/MachOObjectFormat.cpp

   1 //===-------- MachOObjectFormat.cpp -- MachO 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 MachO object format details.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/ExecutionEngine/Orc/Shared/MachOObjectFormat.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 MachOCStringSectionName = "__TEXT,__cstring";
  23 StringRef MachOModInitFuncSectionName = "__DATA,__mod_init_func";
  24 StringRef MachOObjCCatListSectionName = "__DATA,__objc_catlist";
  25 StringRef MachOObjCCatList2SectionName = "__DATA,__objc_catlist2";
  26 StringRef MachOObjCClassListSectionName = "__DATA,__objc_classlist";
  27 StringRef MachOObjCClassNameSectionName = "__TEXT,__objc_classname";
  28 StringRef MachOObjCClassRefsSectionName = "__DATA,__objc_classrefs";
  29 StringRef MachOObjCConstSectionName = "__DATA,__objc_const";
  30 StringRef MachOObjCDataSectionName = "__DATA,__objc_data";
  31 StringRef MachOObjCImageInfoSectionName = "__DATA,__objc_imageinfo";
  32 StringRef MachOObjCMethNameSectionName = "__TEXT,__objc_methname";
  33 StringRef MachOObjCMethTypeSectionName = "__TEXT,__objc_methtype";
  34 StringRef MachOObjCNLCatListSectionName = "__DATA,__objc_nlcatlist";
  35 StringRef MachOObjCNLClassListSectionName = "__DATA,__objc_nlclslist";
  36 StringRef MachOObjCProtoListSectionName = "__DATA,__objc_protolist";
  37 StringRef MachOObjCProtoRefsSectionName = "__DATA,__objc_protorefs";
  38 StringRef MachOObjCSelRefsSectionName = "__DATA,__objc_selrefs";
  39 StringRef MachOSwift5ProtoSectionName = "__TEXT,__swift5_proto";
  40 StringRef MachOSwift5ProtosSectionName = "__TEXT,__swift5_protos";
  41 StringRef MachOSwift5TypesSectionName = "__TEXT,__swift5_types";
  42 StringRef MachOSwift5TypeRefSectionName = "__TEXT,__swift5_typeref";
  43 StringRef MachOSwift5FieldMetadataSectionName = "__TEXT,__swift5_fieldmd";
  44 StringRef MachOSwift5EntrySectionName = "__TEXT,__swift5_entry";
  45 StringRef MachOTextTextSectionName = "__TEXT,__text";
  46 StringRef MachOThreadBSSSectionName = "__DATA,__thread_bss";
  47 StringRef MachOThreadDataSectionName = "__DATA,__thread_data";
  48 StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars";
  49
  50 StringRef MachOInitSectionNames[22] = {
  51     MachOModInitFuncSectionName,         MachOObjCCatListSectionName,
  52     MachOObjCCatList2SectionName,        MachOObjCClassListSectionName,
  53     MachOObjCClassNameSectionName,       MachOObjCClassRefsSectionName,
  54     MachOObjCConstSectionName,           MachOObjCDataSectionName,
  55     MachOObjCImageInfoSectionName,       MachOObjCMethNameSectionName,
  56     MachOObjCMethTypeSectionName,        MachOObjCNLCatListSectionName,
  57     MachOObjCNLClassListSectionName,     MachOObjCProtoListSectionName,
  58     MachOObjCProtoRefsSectionName,       MachOObjCSelRefsSectionName,
  59     MachOSwift5ProtoSectionName,         MachOSwift5ProtosSectionName,
  60     MachOSwift5TypesSectionName,         MachOSwift5TypeRefSectionName,
  61     MachOSwift5FieldMetadataSectionName, MachOSwift5EntrySectionName,
  62 };
  63
  64 bool isMachOInitializerSection(StringRef SegName, StringRef SecName) {
  65   for (auto &InitSection : MachOInitSectionNames) {
  66     // Loop below assumes all MachO init sectios have a length-6
  67     // segment name.
  68     assert(InitSection[6] == ',' && "Init section seg name has length != 6");
  69     if (InitSection.starts_with(SegName) && InitSection.substr(7) == SecName)
  70       return true;
  71   }
  72   return false;
  73 }
  74
  75 } // namespace orc
  76 } // namespace llvm