0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1 //===- MachOUniversal.cpp - Mach-O universal binary -------------*- C++ -*-===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2 //
|
|
147
|
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
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
6 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
7 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
8 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
9 // This file defines the MachOUniversalBinary class.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
10 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
11 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
12
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
13 #include "llvm/Object/MachOUniversal.h"
|
|
83
|
14 #include "llvm/Object/Archive.h"
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
15 #include "llvm/Object/MachO.h"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
16 #include "llvm/Object/ObjectFile.h"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
17 #include "llvm/Support/Casting.h"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
18 #include "llvm/Support/Host.h"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
19 #include "llvm/Support/MemoryBuffer.h"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
20
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
21 using namespace llvm;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
22 using namespace object;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
23
|
|
120
|
24 static Error
|
|
|
25 malformedError(Twine Msg) {
|
|
|
26 std::string StringMsg = "truncated or malformed fat file (" + Msg.str() + ")";
|
|
|
27 return make_error<GenericBinaryError>(std::move(StringMsg),
|
|
|
28 object_error::parse_failed);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
29 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
30
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
31 template<typename T>
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
32 static T getUniversalBinaryStruct(const char *Ptr) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
33 T Res;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
34 memcpy(&Res, Ptr, sizeof(T));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
35 // Universal binary headers have big-endian byte order.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
36 if (sys::IsLittleEndianHost)
|
|
120
|
37 swapStruct(Res);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
38 return Res;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
39 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
40
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
41 MachOUniversalBinary::ObjectForArch::ObjectForArch(
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
42 const MachOUniversalBinary *Parent, uint32_t Index)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
43 : Parent(Parent), Index(Index) {
|
|
121
|
44 // The iterators use Parent as a nullptr and an Index+1 == NumberOfObjects.
|
|
77
|
45 if (!Parent || Index >= Parent->getNumberOfObjects()) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
46 clear();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
47 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
48 // Parse object header.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
49 StringRef ParentData = Parent->getData();
|
|
120
|
50 if (Parent->getMagic() == MachO::FAT_MAGIC) {
|
|
|
51 const char *HeaderPos = ParentData.begin() + sizeof(MachO::fat_header) +
|
|
|
52 Index * sizeof(MachO::fat_arch);
|
|
|
53 Header = getUniversalBinaryStruct<MachO::fat_arch>(HeaderPos);
|
|
|
54 } else { // Parent->getMagic() == MachO::FAT_MAGIC_64
|
|
|
55 const char *HeaderPos = ParentData.begin() + sizeof(MachO::fat_header) +
|
|
|
56 Index * sizeof(MachO::fat_arch_64);
|
|
|
57 Header64 = getUniversalBinaryStruct<MachO::fat_arch_64>(HeaderPos);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
58 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
59 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
60 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
61
|
|
120
|
62 Expected<std::unique_ptr<MachOObjectFile>>
|
|
77
|
63 MachOUniversalBinary::ObjectForArch::getAsObjectFile() const {
|
|
95
|
64 if (!Parent)
|
|
120
|
65 report_fatal_error("MachOUniversalBinary::ObjectForArch::getAsObjectFile() "
|
|
|
66 "called when Parent is a nullptr");
|
|
95
|
67
|
|
|
68 StringRef ParentData = Parent->getData();
|
|
120
|
69 StringRef ObjectData;
|
|
|
70 uint32_t cputype;
|
|
|
71 if (Parent->getMagic() == MachO::FAT_MAGIC) {
|
|
|
72 ObjectData = ParentData.substr(Header.offset, Header.size);
|
|
|
73 cputype = Header.cputype;
|
|
|
74 } else { // Parent->getMagic() == MachO::FAT_MAGIC_64
|
|
|
75 ObjectData = ParentData.substr(Header64.offset, Header64.size);
|
|
|
76 cputype = Header64.cputype;
|
|
|
77 }
|
|
95
|
78 StringRef ObjectName = Parent->getFileName();
|
|
|
79 MemoryBufferRef ObjBuffer(ObjectData, ObjectName);
|
|
120
|
80 return ObjectFile::createMachOObjectFile(ObjBuffer, cputype, Index);
|
|
77
|
81 }
|
|
|
82
|
|
120
|
83 Expected<std::unique_ptr<Archive>>
|
|
83
|
84 MachOUniversalBinary::ObjectForArch::getAsArchive() const {
|
|
|
85 if (!Parent)
|
|
120
|
86 report_fatal_error("MachOUniversalBinary::ObjectForArch::getAsArchive() "
|
|
|
87 "called when Parent is a nullptr");
|
|
83
|
88
|
|
|
89 StringRef ParentData = Parent->getData();
|
|
120
|
90 StringRef ObjectData;
|
|
|
91 if (Parent->getMagic() == MachO::FAT_MAGIC)
|
|
|
92 ObjectData = ParentData.substr(Header.offset, Header.size);
|
|
|
93 else // Parent->getMagic() == MachO::FAT_MAGIC_64
|
|
|
94 ObjectData = ParentData.substr(Header64.offset, Header64.size);
|
|
83
|
95 StringRef ObjectName = Parent->getFileName();
|
|
|
96 MemoryBufferRef ObjBuffer(ObjectData, ObjectName);
|
|
|
97 return Archive::create(ObjBuffer);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
98 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
99
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
100 void MachOUniversalBinary::anchor() { }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
101
|
|
120
|
102 Expected<std::unique_ptr<MachOUniversalBinary>>
|
|
77
|
103 MachOUniversalBinary::create(MemoryBufferRef Source) {
|
|
120
|
104 Error Err = Error::success();
|
|
77
|
105 std::unique_ptr<MachOUniversalBinary> Ret(
|
|
120
|
106 new MachOUniversalBinary(Source, Err));
|
|
|
107 if (Err)
|
|
|
108 return std::move(Err);
|
|
77
|
109 return std::move(Ret);
|
|
|
110 }
|
|
|
111
|
|
120
|
112 MachOUniversalBinary::MachOUniversalBinary(MemoryBufferRef Source, Error &Err)
|
|
|
113 : Binary(Binary::ID_MachOUniversalBinary, Source), Magic(0),
|
|
|
114 NumberOfObjects(0) {
|
|
|
115 ErrorAsOutParameter ErrAsOutParam(&Err);
|
|
77
|
116 if (Data.getBufferSize() < sizeof(MachO::fat_header)) {
|
|
120
|
117 Err = make_error<GenericBinaryError>("File too small to be a Mach-O "
|
|
|
118 "universal file",
|
|
|
119 object_error::invalid_file_type);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
120 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
121 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
122 // Check for magic value and sufficient header size.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
123 StringRef Buf = getData();
|
|
120
|
124 MachO::fat_header H =
|
|
|
125 getUniversalBinaryStruct<MachO::fat_header>(Buf.begin());
|
|
|
126 Magic = H.magic;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
127 NumberOfObjects = H.nfat_arch;
|
|
121
|
128 if (NumberOfObjects == 0) {
|
|
|
129 Err = malformedError("contains zero architecture types");
|
|
|
130 return;
|
|
|
131 }
|
|
120
|
132 uint32_t MinSize = sizeof(MachO::fat_header);
|
|
|
133 if (Magic == MachO::FAT_MAGIC)
|
|
|
134 MinSize += sizeof(MachO::fat_arch) * NumberOfObjects;
|
|
|
135 else if (Magic == MachO::FAT_MAGIC_64)
|
|
|
136 MinSize += sizeof(MachO::fat_arch_64) * NumberOfObjects;
|
|
|
137 else {
|
|
|
138 Err = malformedError("bad magic number");
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
139 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
140 }
|
|
120
|
141 if (Buf.size() < MinSize) {
|
|
|
142 Err = malformedError("fat_arch" +
|
|
|
143 Twine(Magic == MachO::FAT_MAGIC ? "" : "_64") +
|
|
|
144 " structs would extend past the end of the file");
|
|
|
145 return;
|
|
|
146 }
|
|
121
|
147 for (uint32_t i = 0; i < NumberOfObjects; i++) {
|
|
|
148 ObjectForArch A(this, i);
|
|
|
149 uint64_t bigSize = A.getOffset();
|
|
|
150 bigSize += A.getSize();
|
|
|
151 if (bigSize > Buf.size()) {
|
|
|
152 Err = malformedError("offset plus size of cputype (" +
|
|
|
153 Twine(A.getCPUType()) + ") cpusubtype (" +
|
|
|
154 Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) +
|
|
|
155 ") extends past the end of the file");
|
|
|
156 return;
|
|
|
157 }
|
|
147
|
158
|
|
|
159 if (A.getAlign() > MaxSectionAlignment) {
|
|
|
160 Err = malformedError("align (2^" + Twine(A.getAlign()) +
|
|
|
161 ") too large for cputype (" + Twine(A.getCPUType()) +
|
|
|
162 ") cpusubtype (" +
|
|
|
163 Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) +
|
|
|
164 ") (maximum 2^" + Twine(MaxSectionAlignment) + ")");
|
|
121
|
165 return;
|
|
|
166 }
|
|
|
167 if(A.getOffset() % (1 << A.getAlign()) != 0){
|
|
|
168 Err = malformedError("offset: " + Twine(A.getOffset()) +
|
|
|
169 " for cputype (" + Twine(A.getCPUType()) + ") cpusubtype (" +
|
|
|
170 Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) +
|
|
|
171 ") not aligned on it's alignment (2^" + Twine(A.getAlign()) + ")");
|
|
|
172 return;
|
|
|
173 }
|
|
|
174 if (A.getOffset() < MinSize) {
|
|
|
175 Err = malformedError("cputype (" + Twine(A.getCPUType()) + ") "
|
|
|
176 "cpusubtype (" + Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) +
|
|
|
177 ") offset " + Twine(A.getOffset()) + " overlaps universal headers");
|
|
|
178 return;
|
|
|
179 }
|
|
|
180 }
|
|
|
181 for (uint32_t i = 0; i < NumberOfObjects; i++) {
|
|
|
182 ObjectForArch A(this, i);
|
|
|
183 for (uint32_t j = i + 1; j < NumberOfObjects; j++) {
|
|
|
184 ObjectForArch B(this, j);
|
|
|
185 if (A.getCPUType() == B.getCPUType() &&
|
|
|
186 (A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) ==
|
|
|
187 (B.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK)) {
|
|
|
188 Err = malformedError("contains two of the same architecture (cputype "
|
|
|
189 "(" + Twine(A.getCPUType()) + ") cpusubtype (" +
|
|
|
190 Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) + "))");
|
|
|
191 return;
|
|
|
192 }
|
|
|
193 if ((A.getOffset() >= B.getOffset() &&
|
|
|
194 A.getOffset() < B.getOffset() + B.getSize()) ||
|
|
|
195 (A.getOffset() + A.getSize() > B.getOffset() &&
|
|
|
196 A.getOffset() + A.getSize() < B.getOffset() + B.getSize()) ||
|
|
|
197 (A.getOffset() <= B.getOffset() &&
|
|
|
198 A.getOffset() + A.getSize() >= B.getOffset() + B.getSize())) {
|
|
|
199 Err = malformedError("cputype (" + Twine(A.getCPUType()) + ") "
|
|
|
200 "cpusubtype (" + Twine(A.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK) +
|
|
|
201 ") at offset " + Twine(A.getOffset()) + " with a size of " +
|
|
|
202 Twine(A.getSize()) + ", overlaps cputype (" + Twine(B.getCPUType()) +
|
|
|
203 ") cpusubtype (" + Twine(B.getCPUSubType() & ~MachO::CPU_SUBTYPE_MASK)
|
|
|
204 + ") at offset " + Twine(B.getOffset()) + " with a size of "
|
|
|
205 + Twine(B.getSize()));
|
|
|
206 return;
|
|
|
207 }
|
|
|
208 }
|
|
|
209 }
|
|
120
|
210 Err = Error::success();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
211 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
212
|
|
120
|
213 Expected<std::unique_ptr<MachOObjectFile>>
|
|
95
|
214 MachOUniversalBinary::getObjectForArch(StringRef ArchName) const {
|
|
|
215 if (Triple(ArchName).getArch() == Triple::ArchType::UnknownArch)
|
|
120
|
216 return make_error<GenericBinaryError>("Unknown architecture "
|
|
|
217 "named: " +
|
|
|
218 ArchName,
|
|
|
219 object_error::arch_not_found);
|
|
95
|
220
|
|
120
|
221 for (auto &Obj : objects())
|
|
121
|
222 if (Obj.getArchFlagName() == ArchName)
|
|
120
|
223 return Obj.getAsObjectFile();
|
|
|
224 return make_error<GenericBinaryError>("fat file does not "
|
|
|
225 "contain " +
|
|
|
226 ArchName,
|
|
|
227 object_error::arch_not_found);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
228 }
|
