LLVM 17.0.0git
ExecutionUtils.cpp
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1//===---- ExecutionUtils.cpp - Utilities for executing functions in 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
13#include "llvm/IR/Constants.h"
14#include "llvm/IR/Function.h"
16#include "llvm/IR/Module.h"
21#include <string>
22
23namespace llvm {
24namespace orc {
25
27 : InitList(
28 GV ? dyn_cast_or_null<ConstantArray>(GV->getInitializer()) : nullptr),
29 I((InitList && End) ? InitList->getNumOperands() : 0) {
30}
31
33 assert(InitList == Other.InitList && "Incomparable iterators.");
34 return I == Other.I;
35}
36
38 return !(*this == Other);
39}
40
42 ++I;
43 return *this;
44}
45
47 CtorDtorIterator Temp = *this;
48 ++I;
49 return Temp;
50}
51
53 ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(I));
54 assert(CS && "Unrecognized type in llvm.global_ctors/llvm.global_dtors");
55
56 Constant *FuncC = CS->getOperand(1);
57 Function *Func = nullptr;
58
59 // Extract function pointer, pulling off any casts.
60 while (FuncC) {
61 if (Function *F = dyn_cast_or_null<Function>(FuncC)) {
62 Func = F;
63 break;
64 } else if (ConstantExpr *CE = dyn_cast_or_null<ConstantExpr>(FuncC)) {
65 if (CE->isCast())
66 FuncC = CE->getOperand(0);
67 else
68 break;
69 } else {
70 // This isn't anything we recognize. Bail out with Func left set to null.
71 break;
72 }
73 }
74
75 auto *Priority = cast<ConstantInt>(CS->getOperand(0));
76 Value *Data = CS->getNumOperands() == 3 ? CS->getOperand(2) : nullptr;
77 if (Data && !isa<GlobalValue>(Data))
78 Data = nullptr;
79 return Element(Priority->getZExtValue(), Func, Data);
80}
81
83 const GlobalVariable *CtorsList = M.getNamedGlobal("llvm.global_ctors");
84 return make_range(CtorDtorIterator(CtorsList, false),
85 CtorDtorIterator(CtorsList, true));
86}
87
89 const GlobalVariable *DtorsList = M.getNamedGlobal("llvm.global_dtors");
90 return make_range(CtorDtorIterator(DtorsList, false),
91 CtorDtorIterator(DtorsList, true));
92}
93
94bool StaticInitGVIterator::isStaticInitGlobal(GlobalValue &GV) {
95 if (GV.isDeclaration())
96 return false;
97
98 if (GV.hasName() && (GV.getName() == "llvm.global_ctors" ||
99 GV.getName() == "llvm.global_dtors"))
100 return true;
101
102 if (ObjFmt == Triple::MachO) {
103 // FIXME: These section checks are too strict: We should match first and
104 // second word split by comma.
105 if (GV.hasSection() &&
106 (GV.getSection().startswith("__DATA,__objc_classlist") ||
107 GV.getSection().startswith("__DATA,__objc_selrefs")))
108 return true;
109 }
110
111 return false;
112}
113
115 if (CtorDtors.empty())
116 return;
117
118 MangleAndInterner Mangle(
120 (*CtorDtors.begin()).Func->getParent()->getDataLayout());
121
122 for (auto CtorDtor : CtorDtors) {
123 assert(CtorDtor.Func && CtorDtor.Func->hasName() &&
124 "Ctor/Dtor function must be named to be runnable under the JIT");
125
126 // FIXME: Maybe use a symbol promoter here instead.
127 if (CtorDtor.Func->hasLocalLinkage()) {
128 CtorDtor.Func->setLinkage(GlobalValue::ExternalLinkage);
129 CtorDtor.Func->setVisibility(GlobalValue::HiddenVisibility);
130 }
131
132 if (CtorDtor.Data && cast<GlobalValue>(CtorDtor.Data)->isDeclaration()) {
133 dbgs() << " Skipping because why now?\n";
134 continue;
135 }
136
137 CtorDtorsByPriority[CtorDtor.Priority].push_back(
138 Mangle(CtorDtor.Func->getName()));
139 }
140}
141
143 using CtorDtorTy = void (*)();
144
145 SymbolLookupSet LookupSet;
146 for (auto &KV : CtorDtorsByPriority)
147 for (auto &Name : KV.second)
148 LookupSet.add(Name);
149 assert(!LookupSet.containsDuplicates() &&
150 "Ctor/Dtor list contains duplicates");
151
152 auto &ES = JD.getExecutionSession();
153 if (auto CtorDtorMap = ES.lookup(
155 std::move(LookupSet))) {
156 for (auto &KV : CtorDtorsByPriority) {
157 for (auto &Name : KV.second) {
158 assert(CtorDtorMap->count(Name) && "No entry for Name");
159 auto CtorDtor = reinterpret_cast<CtorDtorTy>(
160 static_cast<uintptr_t>((*CtorDtorMap)[Name].getAddress()));
161 CtorDtor();
162 }
163 }
164 CtorDtorsByPriority.clear();
165 return Error::success();
166 } else
167 return CtorDtorMap.takeError();
168}
169
171 auto& CXXDestructorDataPairs = DSOHandleOverride;
172 for (auto &P : CXXDestructorDataPairs)
173 P.first(P.second);
174 CXXDestructorDataPairs.clear();
175}
176
178 void *Arg,
179 void *DSOHandle) {
180 auto& CXXDestructorDataPairs =
181 *reinterpret_cast<CXXDestructorDataPairList*>(DSOHandle);
182 CXXDestructorDataPairs.push_back(std::make_pair(Destructor, Arg));
183 return 0;
184}
185
187 MangleAndInterner &Mangle) {
188 SymbolMap RuntimeInterposes;
189 RuntimeInterposes[Mangle("__dso_handle")] =
192 RuntimeInterposes[Mangle("__cxa_atexit")] =
195
196 return JD.define(absoluteSymbols(std::move(RuntimeInterposes)));
197}
198
199void ItaniumCXAAtExitSupport::registerAtExit(void (*F)(void *), void *Ctx,
200 void *DSOHandle) {
201 std::lock_guard<std::mutex> Lock(AtExitsMutex);
202 AtExitRecords[DSOHandle].push_back({F, Ctx});
203}
204
206 std::vector<AtExitRecord> AtExitsToRun;
207
208 {
209 std::lock_guard<std::mutex> Lock(AtExitsMutex);
210 auto I = AtExitRecords.find(DSOHandle);
211 if (I != AtExitRecords.end()) {
212 AtExitsToRun = std::move(I->second);
213 AtExitRecords.erase(I);
214 }
215 }
216
217 while (!AtExitsToRun.empty()) {
218 AtExitsToRun.back().F(AtExitsToRun.back().Ctx);
219 AtExitsToRun.pop_back();
220 }
221}
222
225 : Dylib(std::move(Dylib)), Allow(std::move(Allow)),
227
230 SymbolPredicate Allow) {
231 std::string ErrMsg;
232 auto Lib = sys::DynamicLibrary::getPermanentLibrary(FileName, &ErrMsg);
233 if (!Lib.isValid())
234 return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
235 return std::make_unique<DynamicLibrarySearchGenerator>(
236 std::move(Lib), GlobalPrefix, std::move(Allow));
237}
238
240 LookupState &LS, LookupKind K, JITDylib &JD,
241 JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) {
242 orc::SymbolMap NewSymbols;
243
244 bool HasGlobalPrefix = (GlobalPrefix != '\0');
245
246 for (auto &KV : Symbols) {
247 auto &Name = KV.first;
248
249 if ((*Name).empty())
250 continue;
251
252 if (Allow && !Allow(Name))
253 continue;
254
255 if (HasGlobalPrefix && (*Name).front() != GlobalPrefix)
256 continue;
257
258 std::string Tmp((*Name).data() + HasGlobalPrefix,
259 (*Name).size() - HasGlobalPrefix);
260 if (void *Addr = Dylib.getAddressOfSymbol(Tmp.c_str())) {
261 NewSymbols[Name] = JITEvaluatedSymbol(
262 static_cast<JITTargetAddress>(reinterpret_cast<uintptr_t>(Addr)),
264 }
265 }
266
267 if (NewSymbols.empty())
268 return Error::success();
269
270 return JD.define(absoluteSymbols(std::move(NewSymbols)));
271}
272
275 ObjectLayer &L, const char *FileName,
276 GetObjectFileInterface GetObjFileInterface) {
277 auto ArchiveBuffer = MemoryBuffer::getFile(FileName);
278
279 if (!ArchiveBuffer)
280 return createFileError(FileName, ArchiveBuffer.getError());
281
282 return Create(L, std::move(*ArchiveBuffer), std::move(GetObjFileInterface));
283}
284
287 ObjectLayer &L, const char *FileName, const Triple &TT,
288 GetObjectFileInterface GetObjFileInterface) {
289
290 auto B = object::createBinary(FileName);
291 if (!B)
292 return createFileError(FileName, B.takeError());
293
294 // If this is a regular archive then create an instance from it.
295 if (isa<object::Archive>(B->getBinary()))
296 return Create(L, std::move(B->takeBinary().second),
297 std::move(GetObjFileInterface));
298
299 // If this is a universal binary then search for a slice matching the given
300 // Triple.
301 if (auto *UB = cast<object::MachOUniversalBinary>(B->getBinary())) {
302 for (const auto &Obj : UB->objects()) {
303 auto ObjTT = Obj.getTriple();
304 if (ObjTT.getArch() == TT.getArch() &&
305 ObjTT.getSubArch() == TT.getSubArch() &&
306 (TT.getVendor() == Triple::UnknownVendor ||
307 ObjTT.getVendor() == TT.getVendor())) {
308 // We found a match. Create an instance from a buffer covering this
309 // slice.
310 auto SliceBuffer = MemoryBuffer::getFileSlice(FileName, Obj.getSize(),
311 Obj.getOffset());
312 if (!SliceBuffer)
313 return make_error<StringError>(
314 Twine("Could not create buffer for ") + TT.str() + " slice of " +
315 FileName + ": [ " + formatv("{0:x}", Obj.getOffset()) +
316 " .. " + formatv("{0:x}", Obj.getOffset() + Obj.getSize()) +
317 ": " + SliceBuffer.getError().message(),
318 SliceBuffer.getError());
319 return Create(L, std::move(*SliceBuffer),
320 std::move(GetObjFileInterface));
321 }
322 }
323
324 return make_error<StringError>(Twine("Universal binary ") + FileName +
325 " does not contain a slice for " +
326 TT.str(),
328 }
329
330 return make_error<StringError>(Twine("Unrecognized file type for ") +
331 FileName,
333}
334
337 ObjectLayer &L, std::unique_ptr<MemoryBuffer> ArchiveBuffer,
338 GetObjectFileInterface GetObjFileInterface) {
339 Error Err = Error::success();
340
341 std::unique_ptr<StaticLibraryDefinitionGenerator> ADG(
343 L, std::move(ArchiveBuffer), std::move(GetObjFileInterface), Err));
344
345 if (Err)
346 return std::move(Err);
347
348 return std::move(ADG);
349}
350
352 LookupState &LS, LookupKind K, JITDylib &JD,
353 JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) {
354 // Don't materialize symbols from static archives unless this is a static
355 // lookup.
356 if (K != LookupKind::Static)
357 return Error::success();
358
359 // Bail out early if we've already freed the archive.
360 if (!Archive)
361 return Error::success();
362
364
365 for (const auto &KV : Symbols) {
366 const auto &Name = KV.first;
367 if (!ObjectFilesMap.count(Name))
368 continue;
369 auto ChildBuffer = ObjectFilesMap[Name];
370 ChildBufferInfos.insert(
371 {ChildBuffer.getBuffer(), ChildBuffer.getBufferIdentifier()});
372 }
373
374 for (auto ChildBufferInfo : ChildBufferInfos) {
375 MemoryBufferRef ChildBufferRef(ChildBufferInfo.first,
376 ChildBufferInfo.second);
377
378 auto I = GetObjFileInterface(L.getExecutionSession(), ChildBufferRef);
379 if (!I)
380 return I.takeError();
381
382 if (auto Err = L.add(JD, MemoryBuffer::getMemBuffer(ChildBufferRef, false),
383 std::move(*I)))
384 return Err;
385 }
386
387 return Error::success();
388}
389
390Error StaticLibraryDefinitionGenerator::buildObjectFilesMap() {
392 DenseSet<uint64_t> Visited;
393 DenseSet<uint64_t> Excluded;
394 for (auto &S : Archive->symbols()) {
395 StringRef SymName = S.getName();
396 auto Member = S.getMember();
397 if (!Member)
398 return Member.takeError();
399 auto DataOffset = Member->getDataOffset();
400 if (!Visited.count(DataOffset)) {
401 Visited.insert(DataOffset);
402 auto Child = Member->getAsBinary();
403 if (!Child)
404 return Child.takeError();
405 if ((*Child)->isCOFFImportFile()) {
406 ImportedDynamicLibraries.insert((*Child)->getFileName().str());
407 Excluded.insert(DataOffset);
408 continue;
409 }
410 MemoryBuffers[DataOffset] = (*Child)->getMemoryBufferRef();
411 }
412 if (!Excluded.count(DataOffset))
413 ObjectFilesMap[L.getExecutionSession().intern(SymName)] =
414 MemoryBuffers[DataOffset];
415 }
416
417 return Error::success();
418}
419
420StaticLibraryDefinitionGenerator::StaticLibraryDefinitionGenerator(
421 ObjectLayer &L, std::unique_ptr<MemoryBuffer> ArchiveBuffer,
422 GetObjectFileInterface GetObjFileInterface, Error &Err)
423 : L(L), GetObjFileInterface(std::move(GetObjFileInterface)),
424 ArchiveBuffer(std::move(ArchiveBuffer)),
425 Archive(std::make_unique<object::Archive>(*this->ArchiveBuffer, Err)) {
426 ErrorAsOutParameter _(&Err);
427 if (!this->GetObjFileInterface)
428 this->GetObjFileInterface = getObjectFileInterface;
429 if (!Err)
430 Err = buildObjectFilesMap();
431}
432
433std::unique_ptr<DLLImportDefinitionGenerator>
436 return std::unique_ptr<DLLImportDefinitionGenerator>(
438}
439
441 LookupState &LS, LookupKind K, JITDylib &JD,
442 JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) {
443 JITDylibSearchOrder LinkOrder;
444 JD.withLinkOrderDo([&](const JITDylibSearchOrder &LO) {
445 LinkOrder.reserve(LO.size());
446 for (auto &KV : LO) {
447 if (KV.first == &JD)
448 continue;
449 LinkOrder.push_back(KV);
450 }
451 });
452
453 // FIXME: if regular symbol name start with __imp_ we have to issue lookup of
454 // both __imp_ and stripped name and use the lookup information to resolve the
455 // real symbol name.
456 SymbolLookupSet LookupSet;
458 for (auto &KV : Symbols) {
459 StringRef Deinterned = *KV.first;
460 if (Deinterned.startswith(getImpPrefix()))
461 Deinterned = Deinterned.drop_front(StringRef(getImpPrefix()).size());
462 // Don't degrade the required state
463 if (ToLookUpSymbols.count(Deinterned) &&
464 ToLookUpSymbols[Deinterned] == SymbolLookupFlags::RequiredSymbol)
465 continue;
466 ToLookUpSymbols[Deinterned] = KV.second;
467 }
468
469 for (auto &KV : ToLookUpSymbols)
470 LookupSet.add(ES.intern(KV.first), KV.second);
471
472 auto Resolved =
473 ES.lookup(LinkOrder, LookupSet, LookupKind::DLSym, SymbolState::Resolved);
474 if (!Resolved)
475 return Resolved.takeError();
476
477 auto G = createStubsGraph(*Resolved);
478 if (!G)
479 return G.takeError();
480 return L.add(JD, std::move(*G));
481}
482
484DLLImportDefinitionGenerator::getTargetPointerSize(const Triple &TT) {
485 switch (TT.getArch()) {
486 case Triple::x86_64:
487 return 8;
488 default:
489 return make_error<StringError>(
490 "architecture unsupported by DLLImportDefinitionGenerator",
492 }
493}
494
495Expected<support::endianness>
496DLLImportDefinitionGenerator::getTargetEndianness(const Triple &TT) {
497 switch (TT.getArch()) {
498 case Triple::x86_64:
499 return support::endianness::little;
500 default:
501 return make_error<StringError>(
502 "architecture unsupported by DLLImportDefinitionGenerator",
504 }
505}
506
507Expected<std::unique_ptr<jitlink::LinkGraph>>
508DLLImportDefinitionGenerator::createStubsGraph(const SymbolMap &Resolved) {
510 auto PointerSize = getTargetEndianness(TT);
511 if (!PointerSize)
512 return PointerSize.takeError();
513 auto Endianness = getTargetEndianness(TT);
514 if (!Endianness)
515 return Endianness.takeError();
516
517 auto G = std::make_unique<jitlink::LinkGraph>(
518 "<DLLIMPORT_STUBS>", TT, *PointerSize, *Endianness,
520 jitlink::Section &Sec =
521 G->createSection(getSectionName(), MemProt::Read | MemProt::Exec);
522
523 for (auto &KV : Resolved) {
524 jitlink::Symbol &Target = G->addAbsoluteSymbol(
525 *KV.first, ExecutorAddr(KV.second.getAddress()), *PointerSize,
527
528 // Create __imp_ symbol
529 jitlink::Symbol &Ptr =
531 auto NameCopy = G->allocateString(Twine(getImpPrefix()) + *KV.first);
532 StringRef NameCopyRef = StringRef(NameCopy.data(), NameCopy.size());
533 Ptr.setName(NameCopyRef);
534 Ptr.setLinkage(jitlink::Linkage::Strong);
536
537 // Create PLT stub
538 // FIXME: check PLT stub of data symbol is not accessed
539 jitlink::Block &StubBlock =
541 G->addDefinedSymbol(StubBlock, 0, *KV.first, StubBlock.getSize(),
543 false);
544 }
545
546 return std::move(G);
547}
548
549} // End namespace orc.
550} // End namespace llvm.
amdgpu Simplify well known AMD library false FunctionCallee Value * Arg
@ GlobalPrefix
Definition: AsmWriter.cpp:347
for(auto &MBB :MF)
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
This file contains the declarations for the subclasses of Constant, which represent the different fla...
uint64_t Addr
std::string Name
#define _
#define F(x, y, z)
Definition: MD5.cpp:55
#define I(x, y, z)
Definition: MD5.cpp:58
#define G(x, y, z)
Definition: MD5.cpp:56
Module.h This file contains the declarations for the Module class.
return ToRemove size() > 0
#define P(N)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
ConstantArray - Constant Array Declarations.
Definition: Constants.h:409
A constant value that is initialized with an expression using other constant values.
Definition: Constants.h:998
This is an important base class in LLVM.
Definition: Constant.h:41
bool empty() const
Definition: DenseMap.h:98
size_type count(const_arg_type_t< KeyT > Val) const
Return 1 if the specified key is in the map, 0 otherwise.
Definition: DenseMap.h:145
Implements a dense probed hash-table based set.
Definition: DenseSet.h:271
Lightweight error class with error context and mandatory checking.
Definition: Error.h:156
static ErrorSuccess success()
Create a success value.
Definition: Error.h:330
Tagged union holding either a T or a Error.
Definition: Error.h:470
bool isDeclaration() const
Return true if the primary definition of this global value is outside of the current translation unit...
Definition: Globals.cpp:275
StringRef getSection() const
Definition: Globals.cpp:175
@ HiddenVisibility
The GV is hidden.
Definition: GlobalValue.h:64
bool hasSection() const
Definition: GlobalValue.h:286
@ ExternalLinkage
Externally visible function.
Definition: GlobalValue.h:48
Represents a symbol that has been evaluated to an address already.
Definition: JITSymbol.h:229
static std::unique_ptr< MemoryBuffer > getMemBuffer(StringRef InputData, StringRef BufferName="", bool RequiresNullTerminator=true)
Open the specified memory range as a MemoryBuffer.
static ErrorOr< std::unique_ptr< MemoryBuffer > > getFileSlice(const Twine &Filename, uint64_t MapSize, uint64_t Offset, bool IsVolatile=false, std::optional< Align > Alignment=std::nullopt)
Map a subrange of the specified file as a MemoryBuffer.
static ErrorOr< std::unique_ptr< MemoryBuffer > > getFile(const Twine &Filename, bool IsText=false, bool RequiresNullTerminator=true, bool IsVolatile=false, std::optional< Align > Alignment=std::nullopt)
Open the specified file as a MemoryBuffer, returning a new MemoryBuffer if successful,...
A Module instance is used to store all the information related to an LLVM module.
Definition: Module.h:65
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
StringRef drop_front(size_t N=1) const
Return a StringRef equal to 'this' but with the first N elements dropped.
Definition: StringRef.h:597
bool startswith(StringRef Prefix) const
Definition: StringRef.h:261
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
@ UnknownVendor
Definition: Triple.h:167
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
Value * getOperand(unsigned i) const
Definition: User.h:169
unsigned getNumOperands() const
Definition: User.h:191
LLVM Value Representation.
Definition: Value.h:74
bool hasName() const
Definition: Value.h:261
StringRef getName() const
Return a constant reference to the value's name.
Definition: Value.cpp:308
std::pair< iterator, bool > insert(const ValueT &V)
Definition: DenseSet.h:206
size_type count(const_arg_type_t< ValueT > V) const
Return 1 if the specified key is in the set, 0 otherwise.
Definition: DenseSet.h:97
A range adaptor for a pair of iterators.
IteratorT begin() const
This iterator provides a convenient way to iterate over the elements of an llvm.global_ctors/llvm....
bool operator!=(const CtorDtorIterator &Other) const
Test iterators for inequality.
Element operator*() const
Dereference iterator.
CtorDtorIterator(const GlobalVariable *GV, bool End)
Construct an iterator instance.
CtorDtorIterator & operator++()
Pre-increment iterator.
bool operator==(const CtorDtorIterator &Other) const
Test iterators for equality.
void add(iterator_range< CtorDtorIterator > CtorDtors)
A utility class to create COFF dllimport GOT symbols (__imp_*) and PLT stubs.
static std::unique_ptr< DLLImportDefinitionGenerator > Create(ExecutionSession &ES, ObjectLinkingLayer &L)
Creates a DLLImportDefinitionGenerator instance.
Error tryToGenerate(LookupState &LS, LookupKind K, JITDylib &JD, JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) override
DefinitionGenerators should override this method to insert new definitions into the parent JITDylib.
std::function< bool(const SymbolStringPtr &)> SymbolPredicate
DynamicLibrarySearchGenerator(sys::DynamicLibrary Dylib, char GlobalPrefix, SymbolPredicate Allow=SymbolPredicate())
Create a DynamicLibrarySearchGenerator that searches for symbols in the given sys::DynamicLibrary.
Error tryToGenerate(LookupState &LS, LookupKind K, JITDylib &JD, JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) override
DefinitionGenerators should override this method to insert new definitions into the parent JITDylib.
static Expected< std::unique_ptr< DynamicLibrarySearchGenerator > > Load(const char *FileName, char GlobalPrefix, SymbolPredicate Allow=SymbolPredicate())
Permanently loads the library at the given path and, on success, returns a DynamicLibrarySearchGenera...
An ExecutionSession represents a running JIT program.
Definition: Core.h:1373
ExecutorProcessControl & getExecutorProcessControl()
Get the ExecutorProcessControl object associated with this ExecutionSession.
Definition: Core.h:1416
SymbolStringPtr intern(StringRef SymName)
Add a symbol name to the SymbolStringPool and return a pointer to it.
Definition: Core.h:1424
void lookup(LookupKind K, const JITDylibSearchOrder &SearchOrder, SymbolLookupSet Symbols, SymbolState RequiredState, SymbolsResolvedCallback NotifyComplete, RegisterDependenciesFunction RegisterDependencies)
Search the given JITDylibs for the given symbols.
Definition: Core.cpp:2077
const Triple & getTargetTriple() const
Return the Triple for the target process.
void registerAtExit(void(*F)(void *), void *Ctx, void *DSOHandle)
Represents a JIT'd dynamic library.
Definition: Core.h:962
Error define(std::unique_ptr< MaterializationUnitType > &&MU, ResourceTrackerSP RT=nullptr)
Define all symbols provided by the materialization unit to be part of this JITDylib.
Definition: Core.h:1813
ExecutionSession & getExecutionSession() const
Get a reference to the ExecutionSession for this JITDylib.
Definition: Core.h:981
auto withLinkOrderDo(Func &&F) -> decltype(F(std::declval< const JITDylibSearchOrder & >()))
Do something with the link order (run under the session lock).
Definition: Core.h:1806
JITTargetAddress toTargetAddress(PtrTy *P)
static int CXAAtExitOverride(DestructorPtr Destructor, void *Arg, void *DSOHandle)
std::vector< CXXDestructorDataPair > CXXDestructorDataPairList
CXXDestructorDataPairList DSOHandleOverride
void runDestructors()
Run any destructors recorded by the overriden __cxa_atexit function (CXAAtExitOverride).
Error enable(JITDylib &JD, MangleAndInterner &Mangler)
Wraps state for a lookup-in-progress.
Definition: Core.h:901
Mangles symbol names then uniques them in the context of an ExecutionSession.
Definition: Mangling.h:26
Interface for Layers that accept object files.
Definition: Layer.h:133
virtual Error add(ResourceTrackerSP RT, std::unique_ptr< MemoryBuffer > O, MaterializationUnit::Interface I)
Adds a MaterializationUnit for the object file in the given memory buffer to the JITDylib for the giv...
Definition: Layer.cpp:166
ExecutionSession & getExecutionSession()
Returns the execution session for this layer.
Definition: Layer.h:141
An ObjectLayer implementation built on JITLink.
A utility class to expose symbols from a static library.
static Expected< std::unique_ptr< StaticLibraryDefinitionGenerator > > Load(ObjectLayer &L, const char *FileName, GetObjectFileInterface GetObjFileInterface=GetObjectFileInterface())
Try to create a StaticLibraryDefinitionGenerator from the given path.
static Expected< std::unique_ptr< StaticLibraryDefinitionGenerator > > Create(ObjectLayer &L, std::unique_ptr< MemoryBuffer > ArchiveBuffer, GetObjectFileInterface GetObjFileInterface=GetObjectFileInterface())
Try to create a StaticLibrarySearchGenerator from the given memory buffer.
Error tryToGenerate(LookupState &LS, LookupKind K, JITDylib &JD, JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) override
DefinitionGenerators should override this method to insert new definitions into the parent JITDylib.
A set of symbols to look up, each associated with a SymbolLookupFlags value.
Definition: Core.h:180
SymbolLookupSet & add(SymbolStringPtr Name, SymbolLookupFlags Flags=SymbolLookupFlags::RequiredSymbol)
Add an element to the set.
Definition: Core.h:241
bool containsDuplicates()
Returns true if this set contains any duplicates.
Definition: Core.h:368
This class provides a portable interface to dynamic libraries which also might be known as shared lib...
static DynamicLibrary getPermanentLibrary(const char *filename, std::string *errMsg=nullptr)
This function permanently loads the dynamic library at the given path using the library load operatio...
void * getAddressOfSymbol(const char *symbolName)
Searches through the library for the symbol symbolName.
constexpr support::endianness Endianness
The endianness of all multi-byte encoded values in MessagePack.
Definition: MsgPack.h:24
Expected< std::unique_ptr< Binary > > createBinary(MemoryBufferRef Source, LLVMContext *Context=nullptr, bool InitContent=true)
Create a Binary from Source, autodetecting the file type.
Definition: Binary.cpp:45
JITDylibSearchOrder makeJITDylibSearchOrder(ArrayRef< JITDylib * > JDs, JITDylibLookupFlags Flags=JITDylibLookupFlags::MatchExportedSymbolsOnly)
Convenience function for creating a search order from an ArrayRef of JITDylib*, all with the same fla...
Definition: Core.h:163
iterator_range< CtorDtorIterator > getDestructors(const Module &M)
Create an iterator range over the entries of the llvm.global_ctors array.
std::vector< std::pair< JITDylib *, JITDylibLookupFlags > > JITDylibSearchOrder
A list of (JITDylib*, JITDylibLookupFlags) pairs to be used as a search order during symbol lookup.
Definition: Core.h:159
std::unique_ptr< AbsoluteSymbolsMaterializationUnit > absoluteSymbols(SymbolMap Symbols)
Create an AbsoluteSymbolsMaterializationUnit with the given symbols.
Definition: Core.h:771
DenseMap< SymbolStringPtr, JITEvaluatedSymbol > SymbolMap
A map from symbol names (as SymbolStringPtrs) to JITSymbols (address/flags pairs).
Definition: Core.h:118
iterator_range< CtorDtorIterator > getConstructors(const Module &M)
Create an iterator range over the entries of the llvm.global_ctors array.
JITDylibLookupFlags
Lookup flags that apply to each dylib in the search order for a lookup.
Definition: Core.h:132
Expected< MaterializationUnit::Interface > getObjectFileInterface(ExecutionSession &ES, MemoryBufferRef ObjBuffer)
Returns a MaterializationUnit::Interface for the object file contained in the given buffer,...
LookupKind
Describes the kind of lookup being performed.
Definition: Core.h:154
@ Resolved
Queried, materialization begun.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
auto formatv(const char *Fmt, Ts &&... Vals) -> formatv_object< decltype(std::make_tuple(detail::build_format_adapter(std::forward< Ts >(Vals))...))>
Error createFileError(const Twine &F, Error E)
Concatenate a source file path and/or name with an Error.
Definition: Error.h:1327
std::error_code inconvertibleErrorCode()
The value returned by this function can be returned from convertToErrorCode for Error values where no...
Definition: Error.cpp:79
iterator_range< T > make_range(T x, T y)
Convenience function for iterating over sub-ranges.
auto dyn_cast_or_null(const Y &Val)
Definition: Casting.h:761
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163
OutputIt move(R &&Range, OutputIt Out)
Provide wrappers to std::move which take ranges instead of having to pass begin/end explicitly.
Definition: STLExtras.h:1862
Definition: BitVector.h:851
Accessor for an element of the global_ctors/global_dtors array.