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
15namespace llvm {
16namespace orc {
17
18StringRef MachODataCommonSectionName = "__DATA,__common";
19StringRef MachODataDataSectionName = "__DATA,__data";
20StringRef MachOEHFrameSectionName = "__TEXT,__eh_frame";
21StringRef MachOCompactUnwindInfoSectionName = "__TEXT,__unwind_info";
22StringRef MachOCStringSectionName = "__TEXT,__cstring";
23StringRef MachOModInitFuncSectionName = "__DATA,__mod_init_func";
24StringRef MachOObjCCatListSectionName = "__DATA,__objc_catlist";
25StringRef MachOObjCCatList2SectionName = "__DATA,__objc_catlist2";
26StringRef MachOObjCClassListSectionName = "__DATA,__objc_classlist";
27StringRef MachOObjCClassNameSectionName = "__TEXT,__objc_classname";
28StringRef MachOObjCClassRefsSectionName = "__DATA,__objc_classrefs";
29StringRef MachOObjCConstSectionName = "__DATA,__objc_const";
30StringRef MachOObjCDataSectionName = "__DATA,__objc_data";
31StringRef MachOObjCImageInfoSectionName = "__DATA,__objc_imageinfo";
32StringRef MachOObjCMethNameSectionName = "__TEXT,__objc_methname";
33StringRef MachOObjCMethTypeSectionName = "__TEXT,__objc_methtype";
34StringRef MachOObjCNLCatListSectionName = "__DATA,__objc_nlcatlist";
35StringRef MachOObjCSelRefsSectionName = "__DATA,__objc_selrefs";
36StringRef MachOSwift5ProtoSectionName = "__TEXT,__swift5_proto";
37StringRef MachOSwift5ProtosSectionName = "__TEXT,__swift5_protos";
38StringRef MachOSwift5TypesSectionName = "__TEXT,__swift5_types";
39StringRef MachOSwift5TypeRefSectionName = "__TEXT,__swift5_typeref";
40StringRef MachOSwift5FieldMetadataSectionName = "__TEXT,__swift5_fieldmd";
41StringRef MachOSwift5EntrySectionName = "__TEXT,__swift5_entry";
42StringRef MachOThreadBSSSectionName = "__DATA,__thread_bss";
43StringRef MachOThreadDataSectionName = "__DATA,__thread_data";
44StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars";
45
46StringRef 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
59StringRef ELFEHFrameSectionName = ".eh_frame";
60
61StringRef ELFInitArrayFuncSectionName = ".init_array";
62StringRef ELFInitFuncSectionName = ".init";
63StringRef ELFFiniArrayFuncSectionName = ".fini_array";
64StringRef ELFFiniFuncSectionName = ".fini";
65StringRef ELFCtorArrayFuncSectionName = ".ctors";
66StringRef ELFDtorArrayFuncSectionName = ".dtors";
67
68StringRef ELFInitSectionNames[3]{
69 ELFInitArrayFuncSectionName,
70 ELFInitFuncSectionName,
71 ELFCtorArrayFuncSectionName,
72};
73
74StringRef ELFThreadBSSSectionName = ".tbss";
75StringRef ELFThreadDataSectionName = ".tdata";
76
77bool 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(Prefix: SegName) && InitSection.substr(Start: 7) == SecName)
83 return true;
84 }
85 return false;
86}
87
88bool isMachOInitializerSection(StringRef QualifiedName) {
89 for (auto &InitSection : MachOInitSectionNames)
90 if (InitSection == QualifiedName)
91 return true;
92 return false;
93}
94
95bool isELFInitializerSection(StringRef SecName) {
96 for (StringRef InitSection : ELFInitSectionNames) {
97 StringRef Name = SecName;
98 if (Name.consume_front(Prefix: InitSection) && (Name.empty() || Name[0] == '.'))
99 return true;
100 }
101 return false;
102}
103
104bool isCOFFInitializerSection(StringRef SecName) {
105 return SecName.starts_with(Prefix: ".CRT");
106}
107
108} // namespace orc
109} // namespace llvm
110

source code of llvm/lib/ExecutionEngine/Orc/Shared/ObjectFormats.cpp