//
//===----------------------------------------------------------------------===//
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Type.h"
+#include "llvm/IR/LLVMContext.h"
+#include "OrcLazyJIT.h"
+#include "RemoteMemoryManager.h"
+#include "RemoteTarget.h"
+#include "RemoteTargetExternal.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/Interpreter.h"
-#include "llvm/ExecutionEngine/JIT.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
-#include "llvm/ExecutionEngine/JITMemoryManager.h"
#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/ObjectCache.h"
+#include "llvm/ExecutionEngine/OrcMCJITReplacement.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/TypeBuilder.h"
+#include "llvm/IRReader/IRReader.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/IRReader.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Memory.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
-#include "llvm/Support/DynamicLibrary.h"
-#include "llvm/Support/Memory.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Instrumentation.h"
#include <cerrno>
-#ifdef __linux__
-// These includes used by LLIMCJITMemoryManager::getPointerToNamedFunction()
-// for Glibc trickery. Look comments in this function for more information.
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#include <fcntl.h>
-#include <unistd.h>
-#endif
-
#ifdef __CYGWIN__
#include <cygwin/version.h>
#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007
using namespace llvm;
+#define DEBUG_TYPE "lli"
+
namespace {
+
+ enum class JITKind { MCJIT, OrcMCJITReplacement, OrcLazy };
+
cl::opt<std::string>
InputFile(cl::desc("<input bitcode>"), cl::Positional, cl::init("-"));
cl::desc("Force interpretation: disable JIT"),
cl::init(false));
- cl::opt<bool> UseMCJIT(
- "use-mcjit", cl::desc("Enable use of the MC-based JIT (if available)"),
+ cl::opt<JITKind> UseJITKind("jit-kind",
+ cl::desc("Choose underlying JIT kind."),
+ cl::init(JITKind::MCJIT),
+ cl::values(
+ clEnumValN(JITKind::MCJIT, "mcjit",
+ "MCJIT"),
+ clEnumValN(JITKind::OrcMCJITReplacement,
+ "orc-mcjit",
+ "Orc-based MCJIT replacement"),
+ clEnumValN(JITKind::OrcLazy,
+ "orc-lazy",
+ "Orc-based lazy JIT."),
+ clEnumValEnd));
+
+ // The MCJIT supports building for a target address space separate from
+ // the JIT compilation process. Use a forked process and a copying
+ // memory manager with IPC to execute using this functionality.
+ cl::opt<bool> RemoteMCJIT("remote-mcjit",
+ cl::desc("Execute MCJIT'ed code in a separate process."),
cl::init(false));
+ // Manually specify the child process for remote execution. This overrides
+ // the simulated remote execution that allocates address space for child
+ // execution. The child process will be executed and will communicate with
+ // lli via stdin/stdout pipes.
+ cl::opt<std::string>
+ ChildExecPath("mcjit-remote-process",
+ cl::desc("Specify the filename of the process to launch "
+ "for remote MCJIT execution. If none is specified,"
+ "\n\tremote execution will be simulated in-process."),
+ cl::value_desc("filename"), cl::init(""));
+
// Determine optimization level.
cl::opt<char>
OptLevel("O",
cl::value_desc("function"),
cl::init("main"));
+ cl::list<std::string>
+ ExtraModules("extra-module",
+ cl::desc("Extra modules to be loaded"),
+ cl::value_desc("input bitcode"));
+
+ cl::list<std::string>
+ ExtraObjects("extra-object",
+ cl::desc("Extra object files to be loaded"),
+ cl::value_desc("input object"));
+
+ cl::list<std::string>
+ ExtraArchives("extra-archive",
+ cl::desc("Extra archive files to be loaded"),
+ cl::value_desc("input archive"));
+
+ cl::opt<bool>
+ EnableCacheManager("enable-cache-manager",
+ cl::desc("Use cache manager to save/load mdoules"),
+ cl::init(false));
+
+ cl::opt<std::string>
+ ObjectCacheDir("object-cache-dir",
+ cl::desc("Directory to store cached object files "
+ "(must be user writable)"),
+ cl::init(""));
+
cl::opt<std::string>
FakeArgv0("fake-argv0",
cl::desc("Override the 'argv[0]' value passed into the executing"
clEnumValEnd));
cl::opt<bool>
- EnableJITExceptionHandling("jit-enable-eh",
- cl::desc("Emit exception handling information"),
+ GenerateSoftFloatCalls("soft-float",
+ cl::desc("Generate software floating point library calls"),
cl::init(false));
- cl::opt<bool>
-// In debug builds, make this default to true.
-#ifdef NDEBUG
-#define EMIT_DEBUG false
-#else
-#define EMIT_DEBUG true
-#endif
- EmitJitDebugInfo("jit-emit-debug",
- cl::desc("Emit debug information to debugger"),
- cl::init(EMIT_DEBUG));
-#undef EMIT_DEBUG
-
- static cl::opt<bool>
- EmitJitDebugInfoToDisk("jit-emit-debug-to-disk",
- cl::Hidden,
- cl::desc("Emit debug info objfiles to disk"),
- cl::init(false));
-}
-
-static ExecutionEngine *EE = 0;
-
-static void do_shutdown() {
- // Cygwin-1.5 invokes DLL's dtors before atexit handler.
-#ifndef DO_NOTHING_ATEXIT
- delete EE;
- llvm_shutdown();
-#endif
+ cl::opt<llvm::FloatABI::ABIType>
+ FloatABIForCalls("float-abi",
+ cl::desc("Choose float ABI type"),
+ cl::init(FloatABI::Default),
+ cl::values(
+ clEnumValN(FloatABI::Default, "default",
+ "Target default float ABI type"),
+ clEnumValN(FloatABI::Soft, "soft",
+ "Soft float ABI (implied by -soft-float)"),
+ clEnumValN(FloatABI::Hard, "hard",
+ "Hard float ABI (uses FP registers)"),
+ clEnumValEnd));
}
-// Memory manager for MCJIT
-class LLIMCJITMemoryManager : public JITMemoryManager {
+//===----------------------------------------------------------------------===//
+// Object cache
+//
+// This object cache implementation writes cached objects to disk to the
+// directory specified by CacheDir, using a filename provided in the module
+// descriptor. The cache tries to load a saved object using that path if the
+// file exists. CacheDir defaults to "", in which case objects are cached
+// alongside their originating bitcodes.
+//
+class LLIObjectCache : public ObjectCache {
public:
- SmallVector<sys::MemoryBlock, 16> AllocatedDataMem;
- SmallVector<sys::MemoryBlock, 16> AllocatedCodeMem;
- SmallVector<sys::MemoryBlock, 16> FreeCodeMem;
-
- LLIMCJITMemoryManager() { }
- ~LLIMCJITMemoryManager();
-
- virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID);
-
- virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID);
-
- virtual void *getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure = true);
-
- // Invalidate instruction cache for code sections. Some platforms with
- // separate data cache and instruction cache require explicit cache flush,
- // otherwise JIT code manipulations (like resolved relocations) will get to
- // the data cache but not to the instruction cache.
- virtual void invalidateInstructionCache();
-
- // The MCJITMemoryManager doesn't use the following functions, so we don't
- // need implement them.
- virtual void setMemoryWritable() {
- llvm_unreachable("Unexpected call!");
- }
- virtual void setMemoryExecutable() {
- llvm_unreachable("Unexpected call!");
+ LLIObjectCache(const std::string& CacheDir) : CacheDir(CacheDir) {
+ // Add trailing '/' to cache dir if necessary.
+ if (!this->CacheDir.empty() &&
+ this->CacheDir[this->CacheDir.size() - 1] != '/')
+ this->CacheDir += '/';
}
- virtual void setPoisonMemory(bool poison) {
- llvm_unreachable("Unexpected call!");
- }
- virtual void AllocateGOT() {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t *getGOTBase() const {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *startFunctionBody(const Function *F,
- uintptr_t &ActualSize){
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *allocateStub(const GlobalValue* F, unsigned StubSize,
- unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart,
- uint8_t *FunctionEnd) {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *allocateGlobal(uintptr_t Size, unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void deallocateFunctionBody(void *Body) {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t* startExceptionTable(const Function* F,
- uintptr_t &ActualSize) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void endExceptionTable(const Function *F, uint8_t *TableStart,
- uint8_t *TableEnd, uint8_t* FrameRegister) {
- llvm_unreachable("Unexpected call!");
- }
- virtual void deallocateExceptionTable(void *ET) {
- llvm_unreachable("Unexpected call!");
+ ~LLIObjectCache() override {}
+
+ void notifyObjectCompiled(const Module *M, MemoryBufferRef Obj) override {
+ const std::string ModuleID = M->getModuleIdentifier();
+ std::string CacheName;
+ if (!getCacheFilename(ModuleID, CacheName))
+ return;
+ if (!CacheDir.empty()) { // Create user-defined cache dir.
+ SmallString<128> dir(sys::path::parent_path(CacheName));
+ sys::fs::create_directories(Twine(dir));
+ }
+ std::error_code EC;
+ raw_fd_ostream outfile(CacheName, EC, sys::fs::F_None);
+ outfile.write(Obj.getBufferStart(), Obj.getBufferSize());
+ outfile.close();
}
-};
-uint8_t *LLIMCJITMemoryManager::allocateDataSection(uintptr_t Size,
- unsigned Alignment,
- unsigned SectionID) {
- if (!Alignment)
- Alignment = 16;
- uint8_t *Addr = (uint8_t*)calloc((Size + Alignment - 1)/Alignment, Alignment);
- AllocatedDataMem.push_back(sys::MemoryBlock(Addr, Size));
- return Addr;
-}
+ std::unique_ptr<MemoryBuffer> getObject(const Module* M) override {
+ const std::string ModuleID = M->getModuleIdentifier();
+ std::string CacheName;
+ if (!getCacheFilename(ModuleID, CacheName))
+ return nullptr;
+ // Load the object from the cache filename
+ ErrorOr<std::unique_ptr<MemoryBuffer>> IRObjectBuffer =
+ MemoryBuffer::getFile(CacheName.c_str(), -1, false);
+ // If the file isn't there, that's OK.
+ if (!IRObjectBuffer)
+ return nullptr;
+ // MCJIT will want to write into this buffer, and we don't want that
+ // because the file has probably just been mmapped. Instead we make
+ // a copy. The filed-based buffer will be released when it goes
+ // out of scope.
+ return MemoryBuffer::getMemBufferCopy(IRObjectBuffer.get()->getBuffer());
+ }
-uint8_t *LLIMCJITMemoryManager::allocateCodeSection(uintptr_t Size,
- unsigned Alignment,
- unsigned SectionID) {
- if (!Alignment)
- Alignment = 16;
- unsigned NeedAllocate = Alignment * ((Size + Alignment - 1)/Alignment + 1);
- uintptr_t Addr = 0;
- // Look in the list of free code memory regions and use a block there if one
- // is available.
- for (int i = 0, e = FreeCodeMem.size(); i != e; ++i) {
- sys::MemoryBlock &MB = FreeCodeMem[i];
- if (MB.size() >= NeedAllocate) {
- Addr = (uintptr_t)MB.base();
- uintptr_t EndOfBlock = Addr + MB.size();
- // Align the address.
- Addr = (Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1);
- // Store cutted free memory block.
- FreeCodeMem[i] = sys::MemoryBlock((void*)(Addr + Size),
- EndOfBlock - Addr - Size);
- return (uint8_t*)Addr;
- }
+private:
+ std::string CacheDir;
+
+ bool getCacheFilename(const std::string &ModID, std::string &CacheName) {
+ std::string Prefix("file:");
+ size_t PrefixLength = Prefix.length();
+ if (ModID.substr(0, PrefixLength) != Prefix)
+ return false;
+ std::string CacheSubdir = ModID.substr(PrefixLength);
+#if defined(_WIN32)
+ // Transform "X:\foo" => "/X\foo" for convenience.
+ if (isalpha(CacheSubdir[0]) && CacheSubdir[1] == ':') {
+ CacheSubdir[1] = CacheSubdir[0];
+ CacheSubdir[0] = '/';
+ }
+#endif
+ CacheName = CacheDir + CacheSubdir;
+ size_t pos = CacheName.rfind('.');
+ CacheName.replace(pos, CacheName.length() - pos, ".o");
+ return true;
}
+};
- // No pre-allocated free block was large enough. Allocate a new memory region.
- sys::MemoryBlock MB = sys::Memory::AllocateRWX(NeedAllocate, 0, 0);
-
- AllocatedCodeMem.push_back(MB);
- Addr = (uintptr_t)MB.base();
- uintptr_t EndOfBlock = Addr + MB.size();
- // Align the address.
- Addr = (Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1);
- // The AllocateRWX may allocate much more memory than we need. In this case,
- // we store the unused memory as a free memory block.
- unsigned FreeSize = EndOfBlock-Addr-Size;
- if (FreeSize > 16)
- FreeCodeMem.push_back(sys::MemoryBlock((void*)(Addr + Size), FreeSize));
-
- // Return aligned address
- return (uint8_t*)Addr;
-}
+static ExecutionEngine *EE = nullptr;
+static LLIObjectCache *CacheManager = nullptr;
-void LLIMCJITMemoryManager::invalidateInstructionCache() {
- for (int i = 0, e = AllocatedCodeMem.size(); i != e; ++i)
- sys::Memory::InvalidateInstructionCache(AllocatedCodeMem[i].base(),
- AllocatedCodeMem[i].size());
+static void do_shutdown() {
+ // Cygwin-1.5 invokes DLL's dtors before atexit handler.
+#ifndef DO_NOTHING_ATEXIT
+ delete EE;
+ if (CacheManager)
+ delete CacheManager;
+ llvm_shutdown();
+#endif
}
-void *LLIMCJITMemoryManager::getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure) {
-#if defined(__linux__)
- //===--------------------------------------------------------------------===//
- // Function stubs that are invoked instead of certain library calls
- //
- // Force the following functions to be linked in to anything that uses the
- // JIT. This is a hack designed to work around the all-too-clever Glibc
- // strategy of making these functions work differently when inlined vs. when
- // not inlined, and hiding their real definitions in a separate archive file
- // that the dynamic linker can't see. For more info, search for
- // 'libc_nonshared.a' on Google, or read http://llvm.org/PR274.
- if (Name == "stat") return (void*)(intptr_t)&stat;
- if (Name == "fstat") return (void*)(intptr_t)&fstat;
- if (Name == "lstat") return (void*)(intptr_t)&lstat;
- if (Name == "stat64") return (void*)(intptr_t)&stat64;
- if (Name == "fstat64") return (void*)(intptr_t)&fstat64;
- if (Name == "lstat64") return (void*)(intptr_t)&lstat64;
- if (Name == "atexit") return (void*)(intptr_t)&atexit;
- if (Name == "mknod") return (void*)(intptr_t)&mknod;
-#endif // __linux__
-
- const char *NameStr = Name.c_str();
- void *Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr);
- if (Ptr) return Ptr;
-
- // If it wasn't found and if it starts with an underscore ('_') character,
- // try again without the underscore.
- if (NameStr[0] == '_') {
- Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr+1);
- if (Ptr) return Ptr;
+// On Mingw and Cygwin, an external symbol named '__main' is called from the
+// generated 'main' function to allow static intialization. To avoid linking
+// problems with remote targets (because lli's remote target support does not
+// currently handle external linking) we add a secondary module which defines
+// an empty '__main' function.
+static void addCygMingExtraModule(ExecutionEngine *EE,
+ LLVMContext &Context,
+ StringRef TargetTripleStr) {
+ IRBuilder<> Builder(Context);
+ Triple TargetTriple(TargetTripleStr);
+
+ // Create a new module.
+ std::unique_ptr<Module> M = make_unique<Module>("CygMingHelper", Context);
+ M->setTargetTriple(TargetTripleStr);
+
+ // Create an empty function named "__main".
+ Function *Result;
+ if (TargetTriple.isArch64Bit()) {
+ Result = Function::Create(
+ TypeBuilder<int64_t(void), false>::get(Context),
+ GlobalValue::ExternalLinkage, "__main", M.get());
+ } else {
+ Result = Function::Create(
+ TypeBuilder<int32_t(void), false>::get(Context),
+ GlobalValue::ExternalLinkage, "__main", M.get());
}
-
- if (AbortOnFailure)
- report_fatal_error("Program used external function '" + Name +
- "' which could not be resolved!");
- return 0;
+ BasicBlock *BB = BasicBlock::Create(Context, "__main", Result);
+ Builder.SetInsertPoint(BB);
+ Value *ReturnVal;
+ if (TargetTriple.isArch64Bit())
+ ReturnVal = ConstantInt::get(Context, APInt(64, 0));
+ else
+ ReturnVal = ConstantInt::get(Context, APInt(32, 0));
+ Builder.CreateRet(ReturnVal);
+
+ // Add this new module to the ExecutionEngine.
+ EE->addModule(std::move(M));
}
-LLIMCJITMemoryManager::~LLIMCJITMemoryManager() {
- for (unsigned i = 0, e = AllocatedCodeMem.size(); i != e; ++i)
- sys::Memory::ReleaseRWX(AllocatedCodeMem[i]);
- for (unsigned i = 0, e = AllocatedDataMem.size(); i != e; ++i)
- free(AllocatedDataMem[i].base());
+CodeGenOpt::Level getOptLevel() {
+ switch (OptLevel) {
+ default:
+ errs() << "lli: Invalid optimization level.\n";
+ exit(1);
+ case '0': return CodeGenOpt::None;
+ case '1': return CodeGenOpt::Less;
+ case ' ':
+ case '2': return CodeGenOpt::Default;
+ case '3': return CodeGenOpt::Aggressive;
+ }
+ llvm_unreachable("Unrecognized opt level.");
}
//===----------------------------------------------------------------------===//
// usable by the JIT.
InitializeNativeTarget();
InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
cl::ParseCommandLineOptions(argc, argv,
"llvm interpreter & dynamic compiler\n");
// Load the bitcode...
SMDiagnostic Err;
- Module *Mod = ParseIRFile(InputFile, Err, Context);
+ std::unique_ptr<Module> Owner = parseIRFile(InputFile, Err, Context);
+ Module *Mod = Owner.get();
if (!Mod) {
Err.print(argv[0], errs());
return 1;
}
+ if (UseJITKind == JITKind::OrcLazy)
+ return runOrcLazyJIT(std::move(Owner), argc, argv);
+
+ if (EnableCacheManager) {
+ std::string CacheName("file:");
+ CacheName.append(InputFile);
+ Mod->setModuleIdentifier(CacheName);
+ }
+
// If not jitting lazily, load the whole bitcode file eagerly too.
- std::string ErrorMsg;
if (NoLazyCompilation) {
- if (Mod->MaterializeAllPermanently(&ErrorMsg)) {
+ if (std::error_code EC = Mod->materializeAll()) {
errs() << argv[0] << ": bitcode didn't read correctly.\n";
- errs() << "Reason: " << ErrorMsg << "\n";
+ errs() << "Reason: " << EC.message() << "\n";
exit(1);
}
}
- EngineBuilder builder(Mod);
+ std::string ErrorMsg;
+ EngineBuilder builder(std::move(Owner));
builder.setMArch(MArch);
builder.setMCPU(MCPU);
builder.setMAttrs(MAttrs);
builder.setEngineKind(ForceInterpreter
? EngineKind::Interpreter
: EngineKind::JIT);
+ builder.setUseOrcMCJITReplacement(UseJITKind == JITKind::OrcMCJITReplacement);
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
Mod->setTargetTriple(Triple::normalize(TargetTriple));
// Enable MCJIT if desired.
- LLIMCJITMemoryManager *JMM = 0;
- if (UseMCJIT && !ForceInterpreter) {
- builder.setUseMCJIT(true);
- JMM = new LLIMCJITMemoryManager();
- builder.setJITMemoryManager(JMM);
- } else {
- builder.setJITMemoryManager(ForceInterpreter ? 0 :
- JITMemoryManager::CreateDefaultMemManager());
+ RTDyldMemoryManager *RTDyldMM = nullptr;
+ if (!ForceInterpreter) {
+ if (RemoteMCJIT)
+ RTDyldMM = new RemoteMemoryManager();
+ else
+ RTDyldMM = new SectionMemoryManager();
+
+ // Deliberately construct a temp std::unique_ptr to pass in. Do not null out
+ // RTDyldMM: We still use it below, even though we don't own it.
+ builder.setMCJITMemoryManager(
+ std::unique_ptr<RTDyldMemoryManager>(RTDyldMM));
+ } else if (RemoteMCJIT) {
+ errs() << "error: Remote process execution does not work with the "
+ "interpreter.\n";
+ exit(1);
}
- CodeGenOpt::Level OLvl = CodeGenOpt::Default;
- switch (OptLevel) {
- default:
- errs() << argv[0] << ": invalid optimization level.\n";
- return 1;
- case ' ': break;
- case '0': OLvl = CodeGenOpt::None; break;
- case '1': OLvl = CodeGenOpt::Less; break;
- case '2': OLvl = CodeGenOpt::Default; break;
- case '3': OLvl = CodeGenOpt::Aggressive; break;
- }
- builder.setOptLevel(OLvl);
+ builder.setOptLevel(getOptLevel());
TargetOptions Options;
- Options.JITExceptionHandling = EnableJITExceptionHandling;
- Options.JITEmitDebugInfo = EmitJitDebugInfo;
- Options.JITEmitDebugInfoToDisk = EmitJitDebugInfoToDisk;
+ if (FloatABIForCalls != FloatABI::Default)
+ Options.FloatABIType = FloatABIForCalls;
+
builder.setTargetOptions(Options);
EE = builder.create();
exit(1);
}
- // Clear instruction cache before code will be executed.
- if (JMM)
- JMM->invalidateInstructionCache();
+ if (EnableCacheManager) {
+ CacheManager = new LLIObjectCache(ObjectCacheDir);
+ EE->setObjectCache(CacheManager);
+ }
+
+ // Load any additional modules specified on the command line.
+ for (unsigned i = 0, e = ExtraModules.size(); i != e; ++i) {
+ std::unique_ptr<Module> XMod = parseIRFile(ExtraModules[i], Err, Context);
+ if (!XMod) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ if (EnableCacheManager) {
+ std::string CacheName("file:");
+ CacheName.append(ExtraModules[i]);
+ XMod->setModuleIdentifier(CacheName);
+ }
+ EE->addModule(std::move(XMod));
+ }
+
+ for (unsigned i = 0, e = ExtraObjects.size(); i != e; ++i) {
+ ErrorOr<object::OwningBinary<object::ObjectFile>> Obj =
+ object::ObjectFile::createObjectFile(ExtraObjects[i]);
+ if (!Obj) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ object::OwningBinary<object::ObjectFile> &O = Obj.get();
+ EE->addObjectFile(std::move(O));
+ }
+
+ for (unsigned i = 0, e = ExtraArchives.size(); i != e; ++i) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> ArBufOrErr =
+ MemoryBuffer::getFileOrSTDIN(ExtraArchives[i]);
+ if (!ArBufOrErr) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ std::unique_ptr<MemoryBuffer> &ArBuf = ArBufOrErr.get();
+
+ ErrorOr<std::unique_ptr<object::Archive>> ArOrErr =
+ object::Archive::create(ArBuf->getMemBufferRef());
+ if (std::error_code EC = ArOrErr.getError()) {
+ errs() << EC.message();
+ return 1;
+ }
+ std::unique_ptr<object::Archive> &Ar = ArOrErr.get();
+
+ object::OwningBinary<object::Archive> OB(std::move(Ar), std::move(ArBuf));
+
+ EE->addArchive(std::move(OB));
+ }
+
+ // If the target is Cygwin/MingW and we are generating remote code, we
+ // need an extra module to help out with linking.
+ if (RemoteMCJIT && Triple(Mod->getTargetTriple()).isOSCygMing()) {
+ addCygMingExtraModule(EE, Context, Mod->getTargetTriple());
+ }
// The following functions have no effect if their respective profiling
// support wasn't enabled in the build configuration.
EE->RegisterJITEventListener(
JITEventListener::createIntelJITEventListener());
+ if (!NoLazyCompilation && RemoteMCJIT) {
+ errs() << "warning: remote mcjit does not support lazy compilation\n";
+ NoLazyCompilation = true;
+ }
EE->DisableLazyCompilation(NoLazyCompilation);
// If the user specifically requested an argv[0] to pass into the program,
// do it now.
if (!FakeArgv0.empty()) {
- InputFile = FakeArgv0;
+ InputFile = static_cast<std::string>(FakeArgv0);
} else {
// Otherwise, if there is a .bc suffix on the executable strip it off, it
// might confuse the program.
return -1;
}
- // If the program doesn't explicitly call exit, we will need the Exit
- // function later on to make an explicit call, so get the function now.
- Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context),
- Type::getInt32Ty(Context),
- NULL);
-
// Reset errno to zero on entry to main.
errno = 0;
- // Run static constructors.
- EE->runStaticConstructorsDestructors(false);
+ int Result;
- if (NoLazyCompilation) {
- for (Module::iterator I = Mod->begin(), E = Mod->end(); I != E; ++I) {
- Function *Fn = &*I;
- if (Fn != EntryFn && !Fn->isDeclaration())
- EE->getPointerToFunction(Fn);
- }
- }
+ if (!RemoteMCJIT) {
+ // If the program doesn't explicitly call exit, we will need the Exit
+ // function later on to make an explicit call, so get the function now.
+ Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context),
+ Type::getInt32Ty(Context),
+ nullptr);
- // Run main.
- int Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp);
-
- // Run static destructors.
- EE->runStaticConstructorsDestructors(true);
-
- // If the program didn't call exit explicitly, we should call it now.
- // This ensures that any atexit handlers get called correctly.
- if (Function *ExitF = dyn_cast<Function>(Exit)) {
- std::vector<GenericValue> Args;
- GenericValue ResultGV;
- ResultGV.IntVal = APInt(32, Result);
- Args.push_back(ResultGV);
- EE->runFunction(ExitF, Args);
- errs() << "ERROR: exit(" << Result << ") returned!\n";
- abort();
+ // Run static constructors.
+ if (!ForceInterpreter) {
+ // Give MCJIT a chance to apply relocations and set page permissions.
+ EE->finalizeObject();
+ }
+ EE->runStaticConstructorsDestructors(false);
+
+ // Trigger compilation separately so code regions that need to be
+ // invalidated will be known.
+ (void)EE->getPointerToFunction(EntryFn);
+ // Clear instruction cache before code will be executed.
+ if (RTDyldMM)
+ static_cast<SectionMemoryManager*>(RTDyldMM)->invalidateInstructionCache();
+
+ // Run main.
+ Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp);
+
+ // Run static destructors.
+ EE->runStaticConstructorsDestructors(true);
+
+ // If the program didn't call exit explicitly, we should call it now.
+ // This ensures that any atexit handlers get called correctly.
+ if (Function *ExitF = dyn_cast<Function>(Exit)) {
+ std::vector<GenericValue> Args;
+ GenericValue ResultGV;
+ ResultGV.IntVal = APInt(32, Result);
+ Args.push_back(ResultGV);
+ EE->runFunction(ExitF, Args);
+ errs() << "ERROR: exit(" << Result << ") returned!\n";
+ abort();
+ } else {
+ errs() << "ERROR: exit defined with wrong prototype!\n";
+ abort();
+ }
} else {
- errs() << "ERROR: exit defined with wrong prototype!\n";
- abort();
+ // else == "if (RemoteMCJIT)"
+
+ // Remote target MCJIT doesn't (yet) support static constructors. No reason
+ // it couldn't. This is a limitation of the LLI implemantation, not the
+ // MCJIT itself. FIXME.
+ //
+ RemoteMemoryManager *MM = static_cast<RemoteMemoryManager*>(RTDyldMM);
+ // Everything is prepared now, so lay out our program for the target
+ // address space, assign the section addresses to resolve any relocations,
+ // and send it to the target.
+
+ std::unique_ptr<RemoteTarget> Target;
+ if (!ChildExecPath.empty()) { // Remote execution on a child process
+#ifndef LLVM_ON_UNIX
+ // FIXME: Remove this pointless fallback mode which causes tests to "pass"
+ // on platforms where they should XFAIL.
+ errs() << "Warning: host does not support external remote targets.\n"
+ << " Defaulting to simulated remote execution\n";
+ Target.reset(new RemoteTarget);
+#else
+ if (!sys::fs::can_execute(ChildExecPath)) {
+ errs() << "Unable to find usable child executable: '" << ChildExecPath
+ << "'\n";
+ return -1;
+ }
+ Target.reset(new RemoteTargetExternal(ChildExecPath));
+#endif
+ } else {
+ // No child process name provided, use simulated remote execution.
+ Target.reset(new RemoteTarget);
+ }
+
+ // Give the memory manager a pointer to our remote target interface object.
+ MM->setRemoteTarget(Target.get());
+
+ // Create the remote target.
+ if (!Target->create()) {
+ errs() << "ERROR: " << Target->getErrorMsg() << "\n";
+ return EXIT_FAILURE;
+ }
+
+ // Since we're executing in a (at least simulated) remote address space,
+ // we can't use the ExecutionEngine::runFunctionAsMain(). We have to
+ // grab the function address directly here and tell the remote target
+ // to execute the function.
+ //
+ // Our memory manager will map generated code into the remote address
+ // space as it is loaded and copy the bits over during the finalizeMemory
+ // operation.
+ //
+ // FIXME: argv and envp handling.
+ uint64_t Entry = EE->getFunctionAddress(EntryFn->getName().str());
+
+ DEBUG(dbgs() << "Executing '" << EntryFn->getName() << "' at 0x"
+ << format("%llx", Entry) << "\n");
+
+ if (!Target->executeCode(Entry, Result))
+ errs() << "ERROR: " << Target->getErrorMsg() << "\n";
+
+ // Like static constructors, the remote target MCJIT support doesn't handle
+ // this yet. It could. FIXME.
+
+ // Stop the remote target
+ Target->stop();
}
+
+ return Result;
}
projects / oota-llvm.git / blobdiff