1 //===-- llvm-rtdyld.cpp - MCJIT Testing Tool ------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This is a testing tool for use with the MC-JIT LLVM components.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/ADT/StringMap.h"
15 #include "llvm/DebugInfo/DIContext.h"
16 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
17 #include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
18 #include "llvm/ExecutionEngine/RuntimeDyld.h"
19 #include "llvm/ExecutionEngine/RuntimeDyldChecker.h"
20 #include "llvm/MC/MCAsmInfo.h"
21 #include "llvm/MC/MCContext.h"
22 #include "llvm/MC/MCDisassembler.h"
23 #include "llvm/MC/MCInstPrinter.h"
24 #include "llvm/MC/MCInstrInfo.h"
25 #include "llvm/MC/MCRegisterInfo.h"
26 #include "llvm/MC/MCSubtargetInfo.h"
27 #include "llvm/Object/MachO.h"
28 #include "llvm/Object/SymbolSize.h"
29 #include "llvm/Support/CommandLine.h"
30 #include "llvm/Support/DynamicLibrary.h"
31 #include "llvm/Support/ManagedStatic.h"
32 #include "llvm/Support/Memory.h"
33 #include "llvm/Support/MemoryBuffer.h"
34 #include "llvm/Support/PrettyStackTrace.h"
35 #include "llvm/Support/Signals.h"
36 #include "llvm/Support/TargetRegistry.h"
37 #include "llvm/Support/TargetSelect.h"
38 #include "llvm/Support/raw_ostream.h"
40 #include <system_error>
43 using namespace llvm::object;
45 static cl::list<std::string>
46 InputFileList(cl::Positional, cl::ZeroOrMore,
47 cl::desc("<input file>"));
51 AC_PrintObjectLineInfo,
53 AC_PrintDebugLineInfo,
57 static cl::opt<ActionType>
58 Action(cl::desc("Action to perform:"),
60 cl::values(clEnumValN(AC_Execute, "execute",
61 "Load, link, and execute the inputs."),
62 clEnumValN(AC_PrintLineInfo, "printline",
63 "Load, link, and print line information for each function."),
64 clEnumValN(AC_PrintDebugLineInfo, "printdebugline",
65 "Load, link, and print line information for each function using the debug object"),
66 clEnumValN(AC_PrintObjectLineInfo, "printobjline",
67 "Like -printlineinfo but does not load the object first"),
68 clEnumValN(AC_Verify, "verify",
69 "Load, link and verify the resulting memory image."),
72 static cl::opt<std::string>
74 cl::desc("Function to call as entry point."),
77 static cl::list<std::string>
79 cl::desc("Add library."),
82 static cl::opt<std::string>
83 TripleName("triple", cl::desc("Target triple for disassembler"));
85 static cl::opt<std::string>
87 cl::desc("Target a specific cpu type (-mcpu=help for details)"),
88 cl::value_desc("cpu-name"),
91 static cl::list<std::string>
93 cl::desc("File containing RuntimeDyld verifier checks."),
96 static cl::opt<uint64_t>
97 PreallocMemory("preallocate",
98 cl::desc("Allocate memory upfront rather than on-demand"),
101 static cl::opt<uint64_t>
102 TargetAddrStart("target-addr-start",
103 cl::desc("For -verify only: start of phony target address "
105 cl::init(4096), // Start at "page 1" - no allocating at "null".
108 static cl::opt<uint64_t>
109 TargetAddrEnd("target-addr-end",
110 cl::desc("For -verify only: end of phony target address range."),
114 static cl::opt<uint64_t>
115 TargetSectionSep("target-section-sep",
116 cl::desc("For -verify only: Separation between sections in "
117 "phony target address space."),
121 static cl::list<std::string>
122 SpecificSectionMappings("map-section",
123 cl::desc("For -verify only: Map a section to a "
124 "specific address."),
128 static cl::list<std::string>
129 DummySymbolMappings("dummy-extern",
130 cl::desc("For -verify only: Inject a symbol into the extern "
137 // A trivial memory manager that doesn't do anything fancy, just uses the
138 // support library allocation routines directly.
139 class TrivialMemoryManager : public RTDyldMemoryManager {
141 SmallVector<sys::MemoryBlock, 16> FunctionMemory;
142 SmallVector<sys::MemoryBlock, 16> DataMemory;
144 uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
146 StringRef SectionName) override;
147 uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
148 unsigned SectionID, StringRef SectionName,
149 bool IsReadOnly) override;
151 void *getPointerToNamedFunction(const std::string &Name,
152 bool AbortOnFailure = true) override {
156 bool finalizeMemory(std::string *ErrMsg) override { return false; }
158 // Invalidate instruction cache for sections with execute permissions.
159 // Some platforms with separate data cache and instruction cache require
160 // explicit cache flush, otherwise JIT code manipulations (like resolved
161 // relocations) will get to the data cache but not to the instruction cache.
162 virtual void invalidateInstructionCache();
164 void addDummySymbol(const std::string &Name, uint64_t Addr) {
165 DummyExterns[Name] = Addr;
168 RuntimeDyld::SymbolInfo findSymbol(const std::string &Name) override {
169 auto I = DummyExterns.find(Name);
171 if (I != DummyExterns.end())
172 return RuntimeDyld::SymbolInfo(I->second, JITSymbolFlags::Exported);
174 return RTDyldMemoryManager::findSymbol(Name);
177 void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr,
178 size_t Size) override {}
179 void deregisterEHFrames(uint8_t *Addr, uint64_t LoadAddr,
180 size_t Size) override {}
182 void preallocateSlab(uint64_t Size) {
184 sys::MemoryBlock MB = sys::Memory::AllocateRWX(Size, nullptr, &Err);
186 report_fatal_error("Can't allocate enough memory: " + Err);
189 UsePreallocation = true;
193 uint8_t *allocateFromSlab(uintptr_t Size, unsigned Alignment, bool isCode) {
194 Size = RoundUpToAlignment(Size, Alignment);
195 if (CurrentSlabOffset + Size > SlabSize)
196 report_fatal_error("Can't allocate enough memory. Tune --preallocate");
198 uintptr_t OldSlabOffset = CurrentSlabOffset;
199 sys::MemoryBlock MB((void *)OldSlabOffset, Size);
201 FunctionMemory.push_back(MB);
203 DataMemory.push_back(MB);
204 CurrentSlabOffset += Size;
205 return (uint8_t*)OldSlabOffset;
209 std::map<std::string, uint64_t> DummyExterns;
210 sys::MemoryBlock PreallocSlab;
211 bool UsePreallocation = false;
212 uintptr_t SlabSize = 0;
213 uintptr_t CurrentSlabOffset = 0;
216 uint8_t *TrivialMemoryManager::allocateCodeSection(uintptr_t Size,
219 StringRef SectionName) {
220 if (UsePreallocation)
221 return allocateFromSlab(Size, Alignment, true /* isCode */);
224 sys::MemoryBlock MB = sys::Memory::AllocateRWX(Size, nullptr, &Err);
226 report_fatal_error("MemoryManager allocation failed: " + Err);
227 FunctionMemory.push_back(MB);
228 return (uint8_t*)MB.base();
231 uint8_t *TrivialMemoryManager::allocateDataSection(uintptr_t Size,
234 StringRef SectionName,
236 if (UsePreallocation)
237 return allocateFromSlab(Size, Alignment, false /* isCode */);
240 sys::MemoryBlock MB = sys::Memory::AllocateRWX(Size, nullptr, &Err);
242 report_fatal_error("MemoryManager allocation failed: " + Err);
243 DataMemory.push_back(MB);
244 return (uint8_t*)MB.base();
247 void TrivialMemoryManager::invalidateInstructionCache() {
248 for (auto &FM : FunctionMemory)
249 sys::Memory::InvalidateInstructionCache(FM.base(), FM.size());
251 for (auto &DM : DataMemory)
252 sys::Memory::InvalidateInstructionCache(DM.base(), DM.size());
255 static const char *ProgramName;
257 static void Message(const char *Type, const Twine &Msg) {
258 errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
261 static int Error(const Twine &Msg) {
262 Message("error", Msg);
266 static void loadDylibs() {
267 for (const std::string &Dylib : Dylibs) {
268 if (sys::fs::is_regular_file(Dylib)) {
270 if (sys::DynamicLibrary::LoadLibraryPermanently(Dylib.c_str(), &ErrMsg))
271 llvm::errs() << "Error loading '" << Dylib << "': "
274 llvm::errs() << "Dylib not found: '" << Dylib << "'.\n";
280 static int printLineInfoForInput(bool LoadObjects, bool UseDebugObj) {
281 assert(LoadObjects || !UseDebugObj);
283 // Load any dylibs requested on the command line.
286 // If we don't have any input files, read from stdin.
287 if (!InputFileList.size())
288 InputFileList.push_back("-");
289 for (auto &File : InputFileList) {
290 // Instantiate a dynamic linker.
291 TrivialMemoryManager MemMgr;
292 RuntimeDyld Dyld(MemMgr, MemMgr);
294 // Load the input memory buffer.
296 ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
297 MemoryBuffer::getFileOrSTDIN(File);
298 if (std::error_code EC = InputBuffer.getError())
299 return Error("unable to read input: '" + EC.message() + "'");
301 ErrorOr<std::unique_ptr<ObjectFile>> MaybeObj(
302 ObjectFile::createObjectFile((*InputBuffer)->getMemBufferRef()));
304 if (std::error_code EC = MaybeObj.getError())
305 return Error("unable to create object file: '" + EC.message() + "'");
307 ObjectFile &Obj = **MaybeObj;
309 OwningBinary<ObjectFile> DebugObj;
310 std::unique_ptr<RuntimeDyld::LoadedObjectInfo> LoadedObjInfo = nullptr;
311 ObjectFile *SymbolObj = &Obj;
313 // Load the object file
315 Dyld.loadObject(Obj);
318 return Error(Dyld.getErrorString());
320 // Resolve all the relocations we can.
321 Dyld.resolveRelocations();
324 DebugObj = LoadedObjInfo->getObjectForDebug(Obj);
325 SymbolObj = DebugObj.getBinary();
326 LoadedObjInfo.reset();
330 std::unique_ptr<DIContext> Context(
331 new DWARFContextInMemory(*SymbolObj,LoadedObjInfo.get()));
333 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr =
334 object::computeSymbolSizes(*SymbolObj);
336 // Use symbol info to iterate functions in the object.
337 for (const auto &P : SymAddr) {
338 object::SymbolRef Sym = P.first;
339 if (Sym.getType() == object::SymbolRef::ST_Function) {
340 ErrorOr<StringRef> Name = Sym.getName();
343 ErrorOr<uint64_t> AddrOrErr = Sym.getAddress();
346 uint64_t Addr = *AddrOrErr;
348 uint64_t Size = P.second;
349 // If we're not using the debug object, compute the address of the
350 // symbol in memory (rather than that in the unrelocated object file)
351 // and use that to query the DWARFContext.
352 if (!UseDebugObj && LoadObjects) {
353 object::section_iterator Sec = *Sym.getSection();
355 Sec->getName(SecName);
356 uint64_t SectionLoadAddress =
357 LoadedObjInfo->getSectionLoadAddress(*Sec);
358 if (SectionLoadAddress != 0)
359 Addr += SectionLoadAddress - Sec->getAddress();
362 outs() << "Function: " << *Name << ", Size = " << Size
363 << ", Addr = " << Addr << "\n";
365 DILineInfoTable Lines = Context->getLineInfoForAddressRange(Addr, Size);
366 for (auto &D : Lines) {
367 outs() << " Line info @ " << D.first - Addr << ": "
368 << D.second.FileName << ", line:" << D.second.Line << "\n";
377 static void doPreallocation(TrivialMemoryManager &MemMgr) {
378 // Allocate a slab of memory upfront, if required. This is used if
379 // we want to test small code models.
380 if (static_cast<intptr_t>(PreallocMemory) < 0)
381 report_fatal_error("Pre-allocated bytes of memory must be a positive integer.");
383 // FIXME: Limit the amount of memory that can be preallocated?
384 if (PreallocMemory != 0)
385 MemMgr.preallocateSlab(PreallocMemory);
388 static int executeInput() {
389 // Load any dylibs requested on the command line.
392 // Instantiate a dynamic linker.
393 TrivialMemoryManager MemMgr;
394 doPreallocation(MemMgr);
395 RuntimeDyld Dyld(MemMgr, MemMgr);
397 // FIXME: Preserve buffers until resolveRelocations time to work around a bug
398 // in RuntimeDyldELF.
399 // This fixme should be fixed ASAP. This is a very brittle workaround.
400 std::vector<std::unique_ptr<MemoryBuffer>> InputBuffers;
402 // If we don't have any input files, read from stdin.
403 if (!InputFileList.size())
404 InputFileList.push_back("-");
405 for (auto &File : InputFileList) {
406 // Load the input memory buffer.
407 ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
408 MemoryBuffer::getFileOrSTDIN(File);
409 if (std::error_code EC = InputBuffer.getError())
410 return Error("unable to read input: '" + EC.message() + "'");
411 ErrorOr<std::unique_ptr<ObjectFile>> MaybeObj(
412 ObjectFile::createObjectFile((*InputBuffer)->getMemBufferRef()));
414 if (std::error_code EC = MaybeObj.getError())
415 return Error("unable to create object file: '" + EC.message() + "'");
417 ObjectFile &Obj = **MaybeObj;
418 InputBuffers.push_back(std::move(*InputBuffer));
420 // Load the object file
421 Dyld.loadObject(Obj);
422 if (Dyld.hasError()) {
423 return Error(Dyld.getErrorString());
427 // Resolve all the relocations we can.
428 Dyld.resolveRelocations();
429 // Clear instruction cache before code will be executed.
430 MemMgr.invalidateInstructionCache();
432 // FIXME: Error out if there are unresolved relocations.
434 // Get the address of the entry point (_main by default).
435 void *MainAddress = Dyld.getSymbolLocalAddress(EntryPoint);
437 return Error("no definition for '" + EntryPoint + "'");
439 // Invalidate the instruction cache for each loaded function.
440 for (auto &FM : MemMgr.FunctionMemory) {
441 // Make sure the memory is executable.
442 std::string ErrorStr;
443 sys::Memory::InvalidateInstructionCache(FM.base(), FM.size());
444 if (!sys::Memory::setExecutable(FM, &ErrorStr))
445 return Error("unable to mark function executable: '" + ErrorStr + "'");
448 // Dispatch to _main().
449 errs() << "loaded '" << EntryPoint << "' at: " << (void*)MainAddress << "\n";
451 int (*Main)(int, const char**) =
452 (int(*)(int,const char**)) uintptr_t(MainAddress);
453 const char **Argv = new const char*[2];
454 // Use the name of the first input object module as argv[0] for the target.
455 Argv[0] = InputFileList[0].c_str();
457 return Main(1, Argv);
460 static int checkAllExpressions(RuntimeDyldChecker &Checker) {
461 for (const auto& CheckerFileName : CheckFiles) {
462 ErrorOr<std::unique_ptr<MemoryBuffer>> CheckerFileBuf =
463 MemoryBuffer::getFileOrSTDIN(CheckerFileName);
464 if (std::error_code EC = CheckerFileBuf.getError())
465 return Error("unable to read input '" + CheckerFileName + "': " +
468 if (!Checker.checkAllRulesInBuffer("# rtdyld-check:",
469 CheckerFileBuf.get().get()))
470 return Error("some checks in '" + CheckerFileName + "' failed");
475 static std::map<void *, uint64_t>
476 applySpecificSectionMappings(RuntimeDyldChecker &Checker) {
478 std::map<void*, uint64_t> SpecificMappings;
480 for (StringRef Mapping : SpecificSectionMappings) {
482 size_t EqualsIdx = Mapping.find_first_of("=");
483 std::string SectionIDStr = Mapping.substr(0, EqualsIdx);
484 size_t ComaIdx = Mapping.find_first_of(",");
486 if (ComaIdx == StringRef::npos) {
487 errs() << "Invalid section specification '" << Mapping
488 << "'. Should be '<file name>,<section name>=<addr>'\n";
492 std::string FileName = SectionIDStr.substr(0, ComaIdx);
493 std::string SectionName = SectionIDStr.substr(ComaIdx + 1);
496 std::string ErrorMsg;
497 std::tie(OldAddrInt, ErrorMsg) =
498 Checker.getSectionAddr(FileName, SectionName, true);
500 if (ErrorMsg != "") {
505 void* OldAddr = reinterpret_cast<void*>(static_cast<uintptr_t>(OldAddrInt));
507 std::string NewAddrStr = Mapping.substr(EqualsIdx + 1);
510 if (StringRef(NewAddrStr).getAsInteger(0, NewAddr)) {
511 errs() << "Invalid section address in mapping '" << Mapping << "'.\n";
515 Checker.getRTDyld().mapSectionAddress(OldAddr, NewAddr);
516 SpecificMappings[OldAddr] = NewAddr;
519 return SpecificMappings;
522 // Scatter sections in all directions!
523 // Remaps section addresses for -verify mode. The following command line options
524 // can be used to customize the layout of the memory within the phony target's
526 // -target-addr-start <s> -- Specify where the phony target addres range starts.
527 // -target-addr-end <e> -- Specify where the phony target address range ends.
528 // -target-section-sep <d> -- Specify how big a gap should be left between the
529 // end of one section and the start of the next.
530 // Defaults to zero. Set to something big
531 // (e.g. 1 << 32) to stress-test stubs, GOTs, etc.
533 static void remapSectionsAndSymbols(const llvm::Triple &TargetTriple,
534 TrivialMemoryManager &MemMgr,
535 RuntimeDyldChecker &Checker) {
537 // Set up a work list (section addr/size pairs).
538 typedef std::list<std::pair<void*, uint64_t>> WorklistT;
541 for (const auto& CodeSection : MemMgr.FunctionMemory)
542 Worklist.push_back(std::make_pair(CodeSection.base(), CodeSection.size()));
543 for (const auto& DataSection : MemMgr.DataMemory)
544 Worklist.push_back(std::make_pair(DataSection.base(), DataSection.size()));
546 // Apply any section-specific mappings that were requested on the command
548 typedef std::map<void*, uint64_t> AppliedMappingsT;
549 AppliedMappingsT AppliedMappings = applySpecificSectionMappings(Checker);
551 // Keep an "already allocated" mapping of section target addresses to sizes.
552 // Sections whose address mappings aren't specified on the command line will
553 // allocated around the explicitly mapped sections while maintaining the
554 // minimum separation.
555 std::map<uint64_t, uint64_t> AlreadyAllocated;
557 // Move the previously applied mappings into the already-allocated map.
558 for (WorklistT::iterator I = Worklist.begin(), E = Worklist.end();
560 WorklistT::iterator Tmp = I;
562 AppliedMappingsT::iterator AI = AppliedMappings.find(Tmp->first);
564 if (AI != AppliedMappings.end()) {
565 AlreadyAllocated[AI->second] = Tmp->second;
570 // If the -target-addr-end option wasn't explicitly passed, then set it to a
571 // sensible default based on the target triple.
572 if (TargetAddrEnd.getNumOccurrences() == 0) {
573 if (TargetTriple.isArch16Bit())
574 TargetAddrEnd = (1ULL << 16) - 1;
575 else if (TargetTriple.isArch32Bit())
576 TargetAddrEnd = (1ULL << 32) - 1;
577 // TargetAddrEnd already has a sensible default for 64-bit systems, so
578 // there's nothing to do in the 64-bit case.
581 // Process any elements remaining in the worklist.
582 while (!Worklist.empty()) {
583 std::pair<void*, uint64_t> CurEntry = Worklist.front();
584 Worklist.pop_front();
586 uint64_t NextSectionAddr = TargetAddrStart;
588 for (const auto &Alloc : AlreadyAllocated)
589 if (NextSectionAddr + CurEntry.second + TargetSectionSep <= Alloc.first)
592 NextSectionAddr = Alloc.first + Alloc.second + TargetSectionSep;
594 AlreadyAllocated[NextSectionAddr] = CurEntry.second;
595 Checker.getRTDyld().mapSectionAddress(CurEntry.first, NextSectionAddr);
598 // Add dummy symbols to the memory manager.
599 for (const auto &Mapping : DummySymbolMappings) {
600 size_t EqualsIdx = Mapping.find_first_of("=");
602 if (EqualsIdx == StringRef::npos) {
603 errs() << "Invalid dummy symbol specification '" << Mapping
604 << "'. Should be '<symbol name>=<addr>'\n";
608 std::string Symbol = Mapping.substr(0, EqualsIdx);
609 std::string AddrStr = Mapping.substr(EqualsIdx + 1);
612 if (StringRef(AddrStr).getAsInteger(0, Addr)) {
613 errs() << "Invalid symbol mapping '" << Mapping << "'.\n";
617 MemMgr.addDummySymbol(Symbol, Addr);
621 // Load and link the objects specified on the command line, but do not execute
622 // anything. Instead, attach a RuntimeDyldChecker instance and call it to
623 // verify the correctness of the linked memory.
624 static int linkAndVerify() {
626 // Check for missing triple.
627 if (TripleName == "") {
628 llvm::errs() << "Error: -triple required when running in -verify mode.\n";
632 // Look up the target and build the disassembler.
633 Triple TheTriple(Triple::normalize(TripleName));
634 std::string ErrorStr;
635 const Target *TheTarget =
636 TargetRegistry::lookupTarget("", TheTriple, ErrorStr);
638 llvm::errs() << "Error accessing target '" << TripleName << "': "
642 TripleName = TheTriple.getTriple();
644 std::unique_ptr<MCSubtargetInfo> STI(
645 TheTarget->createMCSubtargetInfo(TripleName, MCPU, ""));
646 assert(STI && "Unable to create subtarget info!");
648 std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
649 assert(MRI && "Unable to create target register info!");
651 std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
652 assert(MAI && "Unable to create target asm info!");
654 MCContext Ctx(MAI.get(), MRI.get(), nullptr);
656 std::unique_ptr<MCDisassembler> Disassembler(
657 TheTarget->createMCDisassembler(*STI, Ctx));
658 assert(Disassembler && "Unable to create disassembler!");
660 std::unique_ptr<MCInstrInfo> MII(TheTarget->createMCInstrInfo());
662 std::unique_ptr<MCInstPrinter> InstPrinter(
663 TheTarget->createMCInstPrinter(Triple(TripleName), 0, *MAI, *MII, *MRI));
665 // Load any dylibs requested on the command line.
668 // Instantiate a dynamic linker.
669 TrivialMemoryManager MemMgr;
670 doPreallocation(MemMgr);
671 RuntimeDyld Dyld(MemMgr, MemMgr);
672 Dyld.setProcessAllSections(true);
673 RuntimeDyldChecker Checker(Dyld, Disassembler.get(), InstPrinter.get(),
676 // FIXME: Preserve buffers until resolveRelocations time to work around a bug
677 // in RuntimeDyldELF.
678 // This fixme should be fixed ASAP. This is a very brittle workaround.
679 std::vector<std::unique_ptr<MemoryBuffer>> InputBuffers;
681 // If we don't have any input files, read from stdin.
682 if (!InputFileList.size())
683 InputFileList.push_back("-");
684 for (auto &Filename : InputFileList) {
685 // Load the input memory buffer.
686 ErrorOr<std::unique_ptr<MemoryBuffer>> InputBuffer =
687 MemoryBuffer::getFileOrSTDIN(Filename);
689 if (std::error_code EC = InputBuffer.getError())
690 return Error("unable to read input: '" + EC.message() + "'");
692 ErrorOr<std::unique_ptr<ObjectFile>> MaybeObj(
693 ObjectFile::createObjectFile((*InputBuffer)->getMemBufferRef()));
695 if (std::error_code EC = MaybeObj.getError())
696 return Error("unable to create object file: '" + EC.message() + "'");
698 ObjectFile &Obj = **MaybeObj;
699 InputBuffers.push_back(std::move(*InputBuffer));
701 // Load the object file
702 Dyld.loadObject(Obj);
703 if (Dyld.hasError()) {
704 return Error(Dyld.getErrorString());
708 // Re-map the section addresses into the phony target address space and add
710 remapSectionsAndSymbols(TheTriple, MemMgr, Checker);
712 // Resolve all the relocations we can.
713 Dyld.resolveRelocations();
715 // Register EH frames.
716 Dyld.registerEHFrames();
718 int ErrorCode = checkAllExpressions(Checker);
719 if (Dyld.hasError()) {
720 errs() << "RTDyld reported an error applying relocations:\n "
721 << Dyld.getErrorString() << "\n";
728 int main(int argc, char **argv) {
729 sys::PrintStackTraceOnErrorSignal();
730 PrettyStackTraceProgram X(argc, argv);
732 ProgramName = argv[0];
733 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
735 llvm::InitializeAllTargetInfos();
736 llvm::InitializeAllTargetMCs();
737 llvm::InitializeAllDisassemblers();
739 cl::ParseCommandLineOptions(argc, argv, "llvm MC-JIT tool\n");
743 return executeInput();
744 case AC_PrintDebugLineInfo:
745 return printLineInfoForInput(/* LoadObjects */ true,/* UseDebugObj */ true);
746 case AC_PrintLineInfo:
747 return printLineInfoForInput(/* LoadObjects */ true,/* UseDebugObj */false);
748 case AC_PrintObjectLineInfo:
749 return printLineInfoForInput(/* LoadObjects */false,/* UseDebugObj */false);
751 return linkAndVerify();