clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ExecutionUtils.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/gnu/usr.bin/clang/libLLVM/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Analysis -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ASMParser -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/BinaryFormat -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitcode -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitcode -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitstream -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /include/llvm/CodeGen -I /include/llvm/CodeGen/PBQP -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/IR -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/IR -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Coroutines -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ProfileData/Coverage -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/CodeView -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/DWARF -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/MSF -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/PDB -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Demangle -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine/JITLink -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine/Orc -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend/OpenACC -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend/OpenMP -I /include/llvm/CodeGen/GlobalISel -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/IRReader -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/InstCombine -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/Transforms/InstCombine -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/LTO -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Linker -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/MC -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/MC/MCParser -I /include/llvm/CodeGen/MIRParser -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Object -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Option -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Passes -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ProfileData -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Scalar -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ADT -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Support -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/Symbolize -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Target -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Utils -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Vectorize -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/IPO -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include -I /usr/src/gnu/usr.bin/clang/libLLVM/../include -I /usr/src/gnu/usr.bin/clang/libLLVM/obj -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include -D NDEBUG -D __STDC_LIMIT_MACROS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D LLVM_PREFIX="/usr" -D PIC -internal-isystem /usr/include/c++/v1 -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/usr/src/gnu/usr.bin/clang/libLLVM/obj -ferror-limit 19 -fvisibility-inlines-hidden -fwrapv -D_RET_PROTECTOR -ret-protector -fno-rtti -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c++ /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/ExecutionEngine/Orc/ExecutionUtils.cpp
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | #include "llvm/ExecutionEngine/Orc/ExecutionUtils.h" |
10 | #include "llvm/ExecutionEngine/Orc/Layer.h" |
11 | #include "llvm/IR/Constants.h" |
12 | #include "llvm/IR/Function.h" |
13 | #include "llvm/IR/GlobalVariable.h" |
14 | #include "llvm/IR/Module.h" |
15 | #include "llvm/Object/MachOUniversal.h" |
16 | #include "llvm/Support/FormatVariadic.h" |
17 | #include "llvm/Support/TargetRegistry.h" |
18 | #include "llvm/Target/TargetMachine.h" |
19 | #include <string> |
20 | |
21 | namespace llvm { |
22 | namespace orc { |
23 | |
24 | CtorDtorIterator::CtorDtorIterator(const GlobalVariable *GV, bool End) |
25 | : InitList( |
26 | GV ? dyn_cast_or_null<ConstantArray>(GV->getInitializer()) : nullptr), |
27 | I((InitList && End) ? InitList->getNumOperands() : 0) { |
28 | } |
29 | |
30 | bool CtorDtorIterator::operator==(const CtorDtorIterator &Other) const { |
31 | assert(InitList == Other.InitList && "Incomparable iterators."); |
32 | return I == Other.I; |
33 | } |
34 | |
35 | bool CtorDtorIterator::operator!=(const CtorDtorIterator &Other) const { |
36 | return !(*this == Other); |
37 | } |
38 | |
39 | CtorDtorIterator& CtorDtorIterator::operator++() { |
40 | ++I; |
41 | return *this; |
42 | } |
43 | |
44 | CtorDtorIterator CtorDtorIterator::operator++(int) { |
45 | CtorDtorIterator Temp = *this; |
46 | ++I; |
47 | return Temp; |
48 | } |
49 | |
50 | CtorDtorIterator::Element CtorDtorIterator::operator*() const { |
51 | ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(I)); |
| 4 | | Assuming the object is a 'ConstantStruct' | |
|
52 | assert(CS && "Unrecognized type in llvm.global_ctors/llvm.global_dtors"); |
53 | |
54 | Constant *FuncC = CS->getOperand(1); |
55 | Function *Func = nullptr; |
| 5 | | 'Func' initialized to a null pointer value | |
|
56 | |
57 | |
58 | while (FuncC) { |
| 6 | | Loop condition is false. Execution continues on line 73 | |
|
59 | if (Function *F = dyn_cast_or_null<Function>(FuncC)) { |
60 | Func = F; |
61 | break; |
62 | } else if (ConstantExpr *CE = dyn_cast_or_null<ConstantExpr>(FuncC)) { |
63 | if (CE->isCast()) |
64 | FuncC = dyn_cast_or_null<ConstantExpr>(CE->getOperand(0)); |
65 | else |
66 | break; |
67 | } else { |
68 | |
69 | break; |
70 | } |
71 | } |
72 | |
73 | auto *Priority = cast<ConstantInt>(CS->getOperand(0)); |
74 | Value *Data = CS->getNumOperands() == 3 ? CS->getOperand(2) : nullptr; |
| 7 | | Assuming the condition is false | |
|
| |
75 | if (Data && !isa<GlobalValue>(Data)) |
76 | Data = nullptr; |
77 | return Element(Priority->getZExtValue(), Func, Data); |
| 9 | | Passing null pointer value via 2nd parameter 'Func' | |
|
| 10 | | Calling constructor for 'Element' | |
|
| 12 | | Returning from constructor for 'Element' | |
|
78 | } |
79 | |
80 | iterator_range<CtorDtorIterator> getConstructors(const Module &M) { |
81 | const GlobalVariable *CtorsList = M.getNamedGlobal("llvm.global_ctors"); |
82 | return make_range(CtorDtorIterator(CtorsList, false), |
83 | CtorDtorIterator(CtorsList, true)); |
84 | } |
85 | |
86 | iterator_range<CtorDtorIterator> getDestructors(const Module &M) { |
87 | const GlobalVariable *DtorsList = M.getNamedGlobal("llvm.global_dtors"); |
88 | return make_range(CtorDtorIterator(DtorsList, false), |
89 | CtorDtorIterator(DtorsList, true)); |
90 | } |
91 | |
92 | bool StaticInitGVIterator::isStaticInitGlobal(GlobalValue &GV) { |
93 | if (GV.isDeclaration()) |
94 | return false; |
95 | |
96 | if (GV.hasName() && (GV.getName() == "llvm.global_ctors" || |
97 | GV.getName() == "llvm.global_dtors")) |
98 | return true; |
99 | |
100 | if (ObjFmt == Triple::MachO) { |
101 | |
102 | |
103 | if (GV.hasSection() && |
104 | (GV.getSection().startswith("__DATA,__objc_classlist") || |
105 | GV.getSection().startswith("__DATA,__objc_selrefs"))) |
106 | return true; |
107 | } |
108 | |
109 | return false; |
110 | } |
111 | |
112 | void CtorDtorRunner::add(iterator_range<CtorDtorIterator> CtorDtors) { |
113 | if (CtorDtors.empty()) |
| 1 | Assuming the condition is false | |
|
| |
114 | return; |
115 | |
116 | MangleAndInterner Mangle( |
117 | JD.getExecutionSession(), |
118 | (*CtorDtors.begin()).Func->getParent()->getDataLayout()); |
| 3 | | Calling 'CtorDtorIterator::operator*' | |
|
| 13 | | Returning from 'CtorDtorIterator::operator*' | |
|
| 14 | | Called C++ object pointer is null |
|
119 | |
120 | for (auto CtorDtor : CtorDtors) { |
121 | assert(CtorDtor.Func && CtorDtor.Func->hasName() && |
122 | "Ctor/Dtor function must be named to be runnable under the JIT"); |
123 | |
124 | |
125 | if (CtorDtor.Func->hasLocalLinkage()) { |
126 | CtorDtor.Func->setLinkage(GlobalValue::ExternalLinkage); |
127 | CtorDtor.Func->setVisibility(GlobalValue::HiddenVisibility); |
128 | } |
129 | |
130 | if (CtorDtor.Data && cast<GlobalValue>(CtorDtor.Data)->isDeclaration()) { |
131 | dbgs() << " Skipping because why now?\n"; |
132 | continue; |
133 | } |
134 | |
135 | CtorDtorsByPriority[CtorDtor.Priority].push_back( |
136 | Mangle(CtorDtor.Func->getName())); |
137 | } |
138 | } |
139 | |
140 | Error CtorDtorRunner::run() { |
141 | using CtorDtorTy = void (*)(); |
142 | |
143 | SymbolLookupSet LookupSet; |
144 | for (auto &KV : CtorDtorsByPriority) |
145 | for (auto &Name : KV.second) |
146 | LookupSet.add(Name); |
147 | assert(!LookupSet.containsDuplicates() && |
148 | "Ctor/Dtor list contains duplicates"); |
149 | |
150 | auto &ES = JD.getExecutionSession(); |
151 | if (auto CtorDtorMap = ES.lookup( |
152 | makeJITDylibSearchOrder(&JD, JITDylibLookupFlags::MatchAllSymbols), |
153 | std::move(LookupSet))) { |
154 | for (auto &KV : CtorDtorsByPriority) { |
155 | for (auto &Name : KV.second) { |
156 | assert(CtorDtorMap->count(Name) && "No entry for Name"); |
157 | auto CtorDtor = reinterpret_cast<CtorDtorTy>( |
158 | static_cast<uintptr_t>((*CtorDtorMap)[Name].getAddress())); |
159 | CtorDtor(); |
160 | } |
161 | } |
162 | CtorDtorsByPriority.clear(); |
163 | return Error::success(); |
164 | } else |
165 | return CtorDtorMap.takeError(); |
166 | } |
167 | |
168 | void LocalCXXRuntimeOverridesBase::runDestructors() { |
169 | auto& CXXDestructorDataPairs = DSOHandleOverride; |
170 | for (auto &P : CXXDestructorDataPairs) |
171 | P.first(P.second); |
172 | CXXDestructorDataPairs.clear(); |
173 | } |
174 | |
175 | int LocalCXXRuntimeOverridesBase::CXAAtExitOverride(DestructorPtr Destructor, |
176 | void *Arg, |
177 | void *DSOHandle) { |
178 | auto& CXXDestructorDataPairs = |
179 | *reinterpret_cast<CXXDestructorDataPairList*>(DSOHandle); |
180 | CXXDestructorDataPairs.push_back(std::make_pair(Destructor, Arg)); |
181 | return 0; |
182 | } |
183 | |
184 | Error LocalCXXRuntimeOverrides::enable(JITDylib &JD, |
185 | MangleAndInterner &Mangle) { |
186 | SymbolMap RuntimeInterposes; |
187 | RuntimeInterposes[Mangle("__dso_handle")] = |
188 | JITEvaluatedSymbol(toTargetAddress(&DSOHandleOverride), |
189 | JITSymbolFlags::Exported); |
190 | RuntimeInterposes[Mangle("__cxa_atexit")] = |
191 | JITEvaluatedSymbol(toTargetAddress(&CXAAtExitOverride), |
192 | JITSymbolFlags::Exported); |
193 | |
194 | return JD.define(absoluteSymbols(std::move(RuntimeInterposes))); |
195 | } |
196 | |
197 | void ItaniumCXAAtExitSupport::registerAtExit(void (*F)(void *), void *Ctx, |
198 | void *DSOHandle) { |
199 | std::lock_guard<std::mutex> Lock(AtExitsMutex); |
200 | AtExitRecords[DSOHandle].push_back({F, Ctx}); |
201 | } |
202 | |
203 | void ItaniumCXAAtExitSupport::runAtExits(void *DSOHandle) { |
204 | std::vector<AtExitRecord> AtExitsToRun; |
205 | |
206 | { |
207 | std::lock_guard<std::mutex> Lock(AtExitsMutex); |
208 | auto I = AtExitRecords.find(DSOHandle); |
209 | if (I != AtExitRecords.end()) { |
210 | AtExitsToRun = std::move(I->second); |
211 | AtExitRecords.erase(I); |
212 | } |
213 | } |
214 | |
215 | while (!AtExitsToRun.empty()) { |
216 | AtExitsToRun.back().F(AtExitsToRun.back().Ctx); |
217 | AtExitsToRun.pop_back(); |
218 | } |
219 | } |
220 | |
221 | DynamicLibrarySearchGenerator::DynamicLibrarySearchGenerator( |
222 | sys::DynamicLibrary Dylib, char GlobalPrefix, SymbolPredicate Allow) |
223 | : Dylib(std::move(Dylib)), Allow(std::move(Allow)), |
224 | GlobalPrefix(GlobalPrefix) {} |
225 | |
226 | Expected<std::unique_ptr<DynamicLibrarySearchGenerator>> |
227 | DynamicLibrarySearchGenerator::Load(const char *FileName, char GlobalPrefix, |
228 | SymbolPredicate Allow) { |
229 | std::string ErrMsg; |
230 | auto Lib = sys::DynamicLibrary::getPermanentLibrary(FileName, &ErrMsg); |
231 | if (!Lib.isValid()) |
232 | return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode()); |
233 | return std::make_unique<DynamicLibrarySearchGenerator>( |
234 | std::move(Lib), GlobalPrefix, std::move(Allow)); |
235 | } |
236 | |
237 | Error DynamicLibrarySearchGenerator::tryToGenerate( |
238 | LookupState &LS, LookupKind K, JITDylib &JD, |
239 | JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) { |
240 | orc::SymbolMap NewSymbols; |
241 | |
242 | bool HasGlobalPrefix = (GlobalPrefix != '\0'); |
243 | |
244 | for (auto &KV : Symbols) { |
245 | auto &Name = KV.first; |
246 | |
247 | if ((*Name).empty()) |
248 | continue; |
249 | |
250 | if (Allow && !Allow(Name)) |
251 | continue; |
252 | |
253 | if (HasGlobalPrefix && (*Name).front() != GlobalPrefix) |
254 | continue; |
255 | |
256 | std::string Tmp((*Name).data() + HasGlobalPrefix, |
257 | (*Name).size() - HasGlobalPrefix); |
258 | if (void *Addr = Dylib.getAddressOfSymbol(Tmp.c_str())) { |
259 | NewSymbols[Name] = JITEvaluatedSymbol( |
260 | static_cast<JITTargetAddress>(reinterpret_cast<uintptr_t>(Addr)), |
261 | JITSymbolFlags::Exported); |
262 | } |
263 | } |
264 | |
265 | if (NewSymbols.empty()) |
266 | return Error::success(); |
267 | |
268 | return JD.define(absoluteSymbols(std::move(NewSymbols))); |
269 | } |
270 | |
271 | Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
272 | StaticLibraryDefinitionGenerator::Load(ObjectLayer &L, const char *FileName) { |
273 | auto ArchiveBuffer = errorOrToExpected(MemoryBuffer::getFile(FileName)); |
274 | |
275 | if (!ArchiveBuffer) |
276 | return ArchiveBuffer.takeError(); |
277 | |
278 | return Create(L, std::move(*ArchiveBuffer)); |
279 | } |
280 | |
281 | Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
282 | StaticLibraryDefinitionGenerator::Load(ObjectLayer &L, const char *FileName, |
283 | const Triple &TT) { |
284 | auto B = object::createBinary(FileName); |
285 | if (!B) |
286 | return B.takeError(); |
287 | |
288 | |
289 | if (isa<object::Archive>(B->getBinary())) |
290 | return Create(L, std::move(B->takeBinary().second)); |
291 | |
292 | |
293 | |
294 | if (auto *UB = cast<object::MachOUniversalBinary>(B->getBinary())) { |
295 | for (const auto &Obj : UB->objects()) { |
296 | auto ObjTT = Obj.getTriple(); |
297 | if (ObjTT.getArch() == TT.getArch() && |
298 | ObjTT.getSubArch() == TT.getSubArch() && |
299 | (TT.getVendor() == Triple::UnknownVendor || |
300 | ObjTT.getVendor() == TT.getVendor())) { |
301 | |
302 | |
303 | auto SliceBuffer = MemoryBuffer::getFileSlice(FileName, Obj.getSize(), |
304 | Obj.getOffset()); |
305 | if (!SliceBuffer) |
306 | return make_error<StringError>( |
307 | Twine("Could not create buffer for ") + TT.str() + " slice of " + |
308 | FileName + ": [ " + formatv("{0:x}", Obj.getOffset()) + |
309 | " .. " + formatv("{0:x}", Obj.getOffset() + Obj.getSize()) + |
310 | ": " + SliceBuffer.getError().message(), |
311 | SliceBuffer.getError()); |
312 | return Create(L, std::move(*SliceBuffer)); |
313 | } |
314 | } |
315 | |
316 | return make_error<StringError>(Twine("Universal binary ") + FileName + |
317 | " does not contain a slice for " + |
318 | TT.str(), |
319 | inconvertibleErrorCode()); |
320 | } |
321 | |
322 | return make_error<StringError>(Twine("Unrecognized file type for ") + |
323 | FileName, |
324 | inconvertibleErrorCode()); |
325 | } |
326 | |
327 | Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
328 | StaticLibraryDefinitionGenerator::Create( |
329 | ObjectLayer &L, std::unique_ptr<MemoryBuffer> ArchiveBuffer) { |
330 | Error Err = Error::success(); |
331 | |
332 | std::unique_ptr<StaticLibraryDefinitionGenerator> ADG( |
333 | new StaticLibraryDefinitionGenerator(L, std::move(ArchiveBuffer), Err)); |
334 | |
335 | if (Err) |
336 | return std::move(Err); |
337 | |
338 | return std::move(ADG); |
339 | } |
340 | |
341 | Error StaticLibraryDefinitionGenerator::tryToGenerate( |
342 | LookupState &LS, LookupKind K, JITDylib &JD, |
343 | JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) { |
344 | |
345 | |
346 | |
347 | if (K != LookupKind::Static) |
348 | return Error::success(); |
349 | |
350 | |
351 | if (!Archive) |
352 | return Error::success(); |
353 | |
354 | DenseSet<std::pair<StringRef, StringRef>> ChildBufferInfos; |
355 | |
356 | for (const auto &KV : Symbols) { |
357 | const auto &Name = KV.first; |
358 | auto Child = Archive->findSym(*Name); |
359 | if (!Child) |
360 | return Child.takeError(); |
361 | if (*Child == None) |
362 | continue; |
363 | auto ChildBuffer = (*Child)->getMemoryBufferRef(); |
364 | if (!ChildBuffer) |
365 | return ChildBuffer.takeError(); |
366 | ChildBufferInfos.insert( |
367 | {ChildBuffer->getBuffer(), ChildBuffer->getBufferIdentifier()}); |
368 | } |
369 | |
370 | for (auto ChildBufferInfo : ChildBufferInfos) { |
371 | MemoryBufferRef ChildBufferRef(ChildBufferInfo.first, |
372 | ChildBufferInfo.second); |
373 | |
374 | if (auto Err = L.add(JD, MemoryBuffer::getMemBuffer(ChildBufferRef, false))) |
375 | return Err; |
376 | } |
377 | |
378 | return Error::success(); |
379 | } |
380 | |
381 | StaticLibraryDefinitionGenerator::StaticLibraryDefinitionGenerator( |
382 | ObjectLayer &L, std::unique_ptr<MemoryBuffer> ArchiveBuffer, Error &Err) |
383 | : L(L), ArchiveBuffer(std::move(ArchiveBuffer)), |
384 | Archive(std::make_unique<object::Archive>(*this->ArchiveBuffer, Err)) {} |
385 | |
386 | } |
387 | } |
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | #ifndef LLVM_EXECUTIONENGINE_ORC_EXECUTIONUTILS_H |
14 | #define LLVM_EXECUTIONENGINE_ORC_EXECUTIONUTILS_H |
15 | |
16 | #include "llvm/ADT/StringMap.h" |
17 | #include "llvm/ADT/iterator_range.h" |
18 | #include "llvm/ExecutionEngine/JITSymbol.h" |
19 | #include "llvm/ExecutionEngine/Orc/Core.h" |
20 | #include "llvm/ExecutionEngine/Orc/Mangling.h" |
21 | #include "llvm/ExecutionEngine/Orc/Shared/OrcError.h" |
22 | #include "llvm/ExecutionEngine/RuntimeDyld.h" |
23 | #include "llvm/Object/Archive.h" |
24 | #include "llvm/Support/DynamicLibrary.h" |
25 | #include <algorithm> |
26 | #include <cstdint> |
27 | #include <utility> |
28 | #include <vector> |
29 | |
30 | namespace llvm { |
31 | |
32 | class ConstantArray; |
33 | class GlobalVariable; |
34 | class Function; |
35 | class Module; |
36 | class TargetMachine; |
37 | class Value; |
38 | |
39 | namespace orc { |
40 | |
41 | class ObjectLayer; |
42 | |
43 | |
44 | |
45 | |
46 | |
47 | |
48 | class CtorDtorIterator { |
49 | public: |
50 | |
51 | |
52 | |
53 | |
54 | struct Element { |
55 | Element(unsigned Priority, Function *Func, Value *Data) |
56 | : Priority(Priority), Func(Func), Data(Data) {} |
| 11 | | Null pointer value stored to field 'Func' | |
|
57 | |
58 | unsigned Priority; |
59 | Function *Func; |
60 | Value *Data; |
61 | }; |
62 | |
63 | |
64 | |
65 | CtorDtorIterator(const GlobalVariable *GV, bool End); |
66 | |
67 | |
68 | bool operator==(const CtorDtorIterator &Other) const; |
69 | |
70 | |
71 | bool operator!=(const CtorDtorIterator &Other) const; |
72 | |
73 | |
74 | CtorDtorIterator& operator++(); |
75 | |
76 | |
77 | CtorDtorIterator operator++(int); |
78 | |
79 | |
80 | |
81 | Element operator*() const; |
82 | |
83 | private: |
84 | const ConstantArray *InitList; |
85 | unsigned I; |
86 | }; |
87 | |
88 | |
89 | |
90 | iterator_range<CtorDtorIterator> getConstructors(const Module &M); |
91 | |
92 | |
93 | |
94 | iterator_range<CtorDtorIterator> getDestructors(const Module &M); |
95 | |
96 | |
97 | |
98 | class StaticInitGVIterator { |
99 | public: |
100 | StaticInitGVIterator() = default; |
101 | |
102 | StaticInitGVIterator(Module &M) |
103 | : I(M.global_values().begin()), E(M.global_values().end()), |
104 | ObjFmt(Triple(M.getTargetTriple()).getObjectFormat()) { |
105 | if (I != E) { |
106 | if (!isStaticInitGlobal(*I)) |
107 | moveToNextStaticInitGlobal(); |
108 | } else |
109 | I = E = Module::global_value_iterator(); |
110 | } |
111 | |
112 | bool operator==(const StaticInitGVIterator &O) const { return I == O.I; } |
113 | bool operator!=(const StaticInitGVIterator &O) const { return I != O.I; } |
114 | |
115 | StaticInitGVIterator &operator++() { |
116 | assert(I != E && "Increment past end of range"); |
117 | moveToNextStaticInitGlobal(); |
118 | return *this; |
119 | } |
120 | |
121 | GlobalValue &operator*() { return *I; } |
122 | |
123 | private: |
124 | bool isStaticInitGlobal(GlobalValue &GV); |
125 | void moveToNextStaticInitGlobal() { |
126 | ++I; |
127 | while (I != E && !isStaticInitGlobal(*I)) |
128 | ++I; |
129 | if (I == E) |
130 | I = E = Module::global_value_iterator(); |
131 | } |
132 | |
133 | Module::global_value_iterator I, E; |
134 | Triple::ObjectFormatType ObjFmt; |
135 | }; |
136 | |
137 | |
138 | |
139 | inline iterator_range<StaticInitGVIterator> getStaticInitGVs(Module &M) { |
140 | return make_range(StaticInitGVIterator(M), StaticInitGVIterator()); |
141 | } |
142 | |
143 | class CtorDtorRunner { |
144 | public: |
145 | CtorDtorRunner(JITDylib &JD) : JD(JD) {} |
146 | void add(iterator_range<CtorDtorIterator> CtorDtors); |
147 | Error run(); |
148 | |
149 | private: |
150 | using CtorDtorList = std::vector<SymbolStringPtr>; |
151 | using CtorDtorPriorityMap = std::map<unsigned, CtorDtorList>; |
152 | |
153 | JITDylib &JD; |
154 | CtorDtorPriorityMap CtorDtorsByPriority; |
155 | }; |
156 | |
157 | |
158 | |
159 | |
160 | |
161 | |
162 | |
163 | |
164 | |
165 | |
166 | |
167 | |
168 | |
169 | |
170 | |
171 | |
172 | class LocalCXXRuntimeOverridesBase { |
173 | public: |
174 | |
175 | |
176 | void runDestructors(); |
177 | |
178 | protected: |
179 | template <typename PtrTy> JITTargetAddress toTargetAddress(PtrTy *P) { |
180 | return static_cast<JITTargetAddress>(reinterpret_cast<uintptr_t>(P)); |
181 | } |
182 | |
183 | using DestructorPtr = void (*)(void *); |
184 | using CXXDestructorDataPair = std::pair<DestructorPtr, void *>; |
185 | using CXXDestructorDataPairList = std::vector<CXXDestructorDataPair>; |
186 | CXXDestructorDataPairList DSOHandleOverride; |
187 | static int CXAAtExitOverride(DestructorPtr Destructor, void *Arg, |
188 | void *DSOHandle); |
189 | }; |
190 | |
191 | class LocalCXXRuntimeOverrides : public LocalCXXRuntimeOverridesBase { |
192 | public: |
193 | Error enable(JITDylib &JD, MangleAndInterner &Mangler); |
194 | }; |
195 | |
196 | |
197 | class ItaniumCXAAtExitSupport { |
198 | public: |
199 | struct AtExitRecord { |
200 | void (*F)(void *); |
201 | void *Ctx; |
202 | }; |
203 | |
204 | void registerAtExit(void (*F)(void *), void *Ctx, void *DSOHandle); |
205 | void runAtExits(void *DSOHandle); |
206 | |
207 | private: |
208 | std::mutex AtExitsMutex; |
209 | DenseMap<void *, std::vector<AtExitRecord>> AtExitRecords; |
210 | }; |
211 | |
212 | |
213 | |
214 | |
215 | |
216 | |
217 | class DynamicLibrarySearchGenerator : public DefinitionGenerator { |
218 | public: |
219 | using SymbolPredicate = std::function<bool(const SymbolStringPtr &)>; |
220 | |
221 | |
222 | |
223 | |
224 | |
225 | |
226 | |
227 | DynamicLibrarySearchGenerator(sys::DynamicLibrary Dylib, char GlobalPrefix, |
228 | SymbolPredicate Allow = SymbolPredicate()); |
229 | |
230 | |
231 | |
232 | |
233 | static Expected<std::unique_ptr<DynamicLibrarySearchGenerator>> |
234 | Load(const char *FileName, char GlobalPrefix, |
235 | SymbolPredicate Allow = SymbolPredicate()); |
236 | |
237 | |
238 | |
239 | static Expected<std::unique_ptr<DynamicLibrarySearchGenerator>> |
240 | GetForCurrentProcess(char GlobalPrefix, |
241 | SymbolPredicate Allow = SymbolPredicate()) { |
242 | return Load(nullptr, GlobalPrefix, std::move(Allow)); |
243 | } |
244 | |
245 | Error tryToGenerate(LookupState &LS, LookupKind K, JITDylib &JD, |
246 | JITDylibLookupFlags JDLookupFlags, |
247 | const SymbolLookupSet &Symbols) override; |
248 | |
249 | private: |
250 | sys::DynamicLibrary Dylib; |
251 | SymbolPredicate Allow; |
252 | char GlobalPrefix; |
253 | }; |
254 | |
255 | |
256 | |
257 | |
258 | |
259 | |
260 | class StaticLibraryDefinitionGenerator : public DefinitionGenerator { |
261 | public: |
262 | |
263 | |
264 | |
265 | |
266 | static Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
267 | Load(ObjectLayer &L, const char *FileName); |
268 | |
269 | |
270 | |
271 | |
272 | |
273 | |
274 | static Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
275 | Load(ObjectLayer &L, const char *FileName, const Triple &TT); |
276 | |
277 | |
278 | |
279 | |
280 | static Expected<std::unique_ptr<StaticLibraryDefinitionGenerator>> |
281 | Create(ObjectLayer &L, std::unique_ptr<MemoryBuffer> ArchiveBuffer); |
282 | |
283 | Error tryToGenerate(LookupState &LS, LookupKind K, JITDylib &JD, |
284 | JITDylibLookupFlags JDLookupFlags, |
285 | const SymbolLookupSet &Symbols) override; |
286 | |
287 | private: |
288 | StaticLibraryDefinitionGenerator(ObjectLayer &L, |
289 | std::unique_ptr<MemoryBuffer> ArchiveBuffer, |
290 | Error &Err); |
291 | |
292 | ObjectLayer &L; |
293 | std::unique_ptr<MemoryBuffer> ArchiveBuffer; |
294 | std::unique_ptr<object::Archive> Archive; |
295 | }; |
296 | |
297 | } |
298 | } |
299 | |
300 | #endif // LLVM_EXECUTIONENGINE_ORC_EXECUTIONUTILS_H |