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 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 MachOThreadBSSSectionName = "__DATA,__thread_bss";
46 StringRef MachOThreadDataSectionName = "__DATA,__thread_data";
47 StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars";
48
49 StringRef MachOInitSectionNames[22] = {
50 MachOModInitFuncSectionName, MachOObjCCatListSectionName,
51 MachOObjCCatList2SectionName, MachOObjCClassListSectionName,
52 MachOObjCClassNameSectionName, MachOObjCClassRefsSectionName,
53 MachOObjCConstSectionName, MachOObjCDataSectionName,
54 MachOObjCImageInfoSectionName, MachOObjCMethNameSectionName,
55 MachOObjCMethTypeSectionName, MachOObjCNLCatListSectionName,
56 MachOObjCNLClassListSectionName, MachOObjCProtoListSectionName,
57 MachOObjCProtoRefsSectionName, MachOObjCSelRefsSectionName,
58 MachOSwift5ProtoSectionName, MachOSwift5ProtosSectionName,
59 MachOSwift5TypesSectionName, MachOSwift5TypeRefSectionName,
60 MachOSwift5FieldMetadataSectionName, MachOSwift5EntrySectionName,
61 };
62
63 StringRef ELFEHFrameSectionName = ".eh_frame";
64
65 StringRef ELFInitArrayFuncSectionName = ".init_array";
66 StringRef ELFInitFuncSectionName = ".init";
67 StringRef ELFFiniArrayFuncSectionName = ".fini_array";
68 StringRef ELFFiniFuncSectionName = ".fini";
69 StringRef ELFCtorArrayFuncSectionName = ".ctors";
70 StringRef ELFDtorArrayFuncSectionName = ".dtors";
71
72 StringRef ELFInitSectionNames[3]{
73 ELFInitArrayFuncSectionName,
74 ELFInitFuncSectionName,
75 ELFCtorArrayFuncSectionName,
76 };
77
78 StringRef ELFThreadBSSSectionName = ".tbss";
79 StringRef ELFThreadDataSectionName = ".tdata";
80
isMachOInitializerSection(StringRef SegName,StringRef SecName)81 bool isMachOInitializerSection(StringRef SegName, StringRef SecName) {
82 for (auto &InitSection : MachOInitSectionNames) {
83 // Loop below assumes all MachO init sectios have a length-6
84 // segment name.
85 assert(InitSection[6] == ',' && "Init section seg name has length != 6");
86 if (InitSection.starts_with(SegName) && InitSection.substr(7) == SecName)
87 return true;
88 }
89 return false;
90 }
91
isMachOInitializerSection(StringRef QualifiedName)92 bool isMachOInitializerSection(StringRef QualifiedName) {
93 for (auto &InitSection : MachOInitSectionNames)
94 if (InitSection == QualifiedName)
95 return true;
96 return false;
97 }
98
isELFInitializerSection(StringRef SecName)99 bool isELFInitializerSection(StringRef SecName) {
100 for (StringRef InitSection : ELFInitSectionNames) {
101 StringRef Name = SecName;
102 if (Name.consume_front(InitSection) && (Name.empty() || Name[0] == '.'))
103 return true;
104 }
105 return false;
106 }
107
isCOFFInitializerSection(StringRef SecName)108 bool isCOFFInitializerSection(StringRef SecName) {
109 return SecName.starts_with(".CRT");
110 }
111
112 } // namespace orc
113 } // namespace llvm
114