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 MachOObjCSelRefsSectionName = "__DATA,__objc_selrefs";
36 StringRef MachOSwift5ProtoSectionName = "__TEXT,__swift5_proto";
37 StringRef MachOSwift5ProtosSectionName = "__TEXT,__swift5_protos";
38 StringRef MachOSwift5TypesSectionName = "__TEXT,__swift5_types";
39 StringRef MachOSwift5TypeRefSectionName = "__TEXT,__swift5_typeref";
40 StringRef MachOSwift5FieldMetadataSectionName = "__TEXT,__swift5_fieldmd";
41 StringRef MachOSwift5EntrySectionName = "__TEXT,__swift5_entry";
42 StringRef MachOThreadBSSSectionName = "__DATA,__thread_bss";
43 StringRef MachOThreadDataSectionName = "__DATA,__thread_data";
44 StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars";
45
46 StringRef MachOInitSectionNames[19] = {
47 MachOModInitFuncSectionName, MachOObjCCatListSectionName,
48 MachOObjCCatList2SectionName, MachOObjCClassListSectionName,
49 MachOObjCClassNameSectionName, MachOObjCClassRefsSectionName,
50 MachOObjCConstSectionName, MachOObjCDataSectionName,
51 MachOObjCImageInfoSectionName, MachOObjCMethNameSectionName,
52 MachOObjCMethTypeSectionName, MachOObjCNLCatListSectionName,
53 MachOObjCSelRefsSectionName, MachOSwift5ProtoSectionName,
54 MachOSwift5ProtosSectionName, MachOSwift5TypesSectionName,
55 MachOSwift5TypeRefSectionName, MachOSwift5FieldMetadataSectionName,
56 MachOSwift5EntrySectionName,
57 };
58
59 StringRef ELFEHFrameSectionName = ".eh_frame";
60
61 StringRef ELFInitArrayFuncSectionName = ".init_array";
62 StringRef ELFInitFuncSectionName = ".init";
63 StringRef ELFFiniArrayFuncSectionName = ".fini_array";
64 StringRef ELFFiniFuncSectionName = ".fini";
65 StringRef ELFCtorArrayFuncSectionName = ".ctors";
66 StringRef ELFDtorArrayFuncSectionName = ".dtors";
67
68 StringRef ELFInitSectionNames[3]{
69 ELFInitArrayFuncSectionName,
70 ELFInitFuncSectionName,
71 ELFCtorArrayFuncSectionName,
72 };
73
74 StringRef ELFThreadBSSSectionName = ".tbss";
75 StringRef ELFThreadDataSectionName = ".tdata";
76
isMachOInitializerSection(StringRef SegName,StringRef SecName)77 bool isMachOInitializerSection(StringRef SegName, StringRef SecName) {
78 for (auto &InitSection : MachOInitSectionNames) {
79 // Loop below assumes all MachO init sectios have a length-6
80 // segment name.
81 assert(InitSection[6] == ',' && "Init section seg name has length != 6");
82 if (InitSection.starts_with(SegName) && InitSection.substr(7) == SecName)
83 return true;
84 }
85 return false;
86 }
87
isMachOInitializerSection(StringRef QualifiedName)88 bool isMachOInitializerSection(StringRef QualifiedName) {
89 for (auto &InitSection : MachOInitSectionNames)
90 if (InitSection == QualifiedName)
91 return true;
92 return false;
93 }
94
isELFInitializerSection(StringRef SecName)95 bool isELFInitializerSection(StringRef SecName) {
96 for (StringRef InitSection : ELFInitSectionNames) {
97 StringRef Name = SecName;
98 if (Name.consume_front(InitSection) && (Name.empty() || Name[0] == '.'))
99 return true;
100 }
101 return false;
102 }
103
isCOFFInitializerSection(StringRef SecName)104 bool isCOFFInitializerSection(StringRef SecName) {
105 return SecName.starts_with(".CRT");
106 }
107
108 } // namespace orc
109 } // namespace llvm
110