#include "llvm/ExecutionEngine/MCJIT.h"
#include "llvm/ExecutionEngine/ObjectBuffer.h"
#include "llvm/ExecutionEngine/ObjectImage.h"
+#include "llvm/PassManager.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/MutexGuard.h"
+#include "llvm/Target/Mangler.h"
using namespace llvm;
: ExecutionEngine(m), TM(tm), Ctx(0), MemMgr(this, MM), Dyld(&MemMgr),
ObjCache(0) {
- ModuleStates[m] = ModuleAdded;
+ OwnedModules.addModule(m);
setDataLayout(TM->getDataLayout());
}
MCJIT::~MCJIT() {
+ MutexGuard locked(lock);
+ // FIXME: We are managing our modules, so we do not want the base class
+ // ExecutionEngine to manage them as well. To avoid double destruction
+ // of the first (and only) module added in ExecutionEngine constructor
+ // we remove it from EE and will destruct it ourselves.
+ //
+ // It may make sense to move our module manager (based on SmallStPtr) back
+ // into EE if the JIT and Interpreter can live with it.
+ // If so, additional functions: addModule, removeModule, FindFunctionNamed,
+ // runStaticConstructorsDestructors could be moved back to EE as well.
+ //
+ Modules.clear();
+ Dyld.deregisterEHFrames();
+
LoadedObjectMap::iterator it, end = LoadedObjects.end();
for (it = LoadedObjects.begin(); it != end; ++it) {
ObjectImage *Obj = it->second;
}
void MCJIT::addModule(Module *M) {
- Modules.push_back(M);
- ModuleStates[M] = MCJITModuleState();
+ MutexGuard locked(lock);
+ OwnedModules.addModule(M);
}
+bool MCJIT::removeModule(Module *M) {
+ MutexGuard locked(lock);
+ return OwnedModules.removeModule(M);
+}
+
+
+
void MCJIT::setObjectCache(ObjectCache* NewCache) {
+ MutexGuard locked(lock);
ObjCache = NewCache;
}
ObjectBufferStream* MCJIT::emitObject(Module *M) {
- // This must be a module which has already been added to this MCJIT instance.
- assert(std::find(Modules.begin(), Modules.end(), M) != Modules.end());
- assert(ModuleStates.find(M) != ModuleStates.end());
-
- // Get a thread lock to make sure we aren't trying to compile multiple times
MutexGuard locked(lock);
- // Re-compilation is not supported
- assert(!ModuleStates[M].hasBeenEmitted());
+ // This must be a module which has already been added but not loaded to this
+ // MCJIT instance, since these conditions are tested by our caller,
+ // generateCodeForModule.
PassManager PM;
}
void MCJIT::generateCodeForModule(Module *M) {
- // This must be a module which has already been added to this MCJIT instance.
- assert(std::find(Modules.begin(), Modules.end(), M) != Modules.end());
- assert(ModuleStates.find(M) != ModuleStates.end());
-
// Get a thread lock to make sure we aren't trying to load multiple times
MutexGuard locked(lock);
+ // This must be a module which has already been added to this MCJIT instance.
+ assert(OwnedModules.ownsModule(M) &&
+ "MCJIT::generateCodeForModule: Unknown module.");
+
// Re-compilation is not supported
- if (ModuleStates[M].hasBeenLoaded())
+ if (OwnedModules.hasModuleBeenLoaded(M))
return;
OwningPtr<ObjectBuffer> ObjectToLoad;
NotifyObjectEmitted(*LoadedObject);
- ModuleStates[M] = ModuleLoaded;
+ OwnedModules.markModuleAsLoaded(M);
}
void MCJIT::finalizeLoadedModules() {
+ MutexGuard locked(lock);
+
// Resolve any outstanding relocations.
Dyld.resolveRelocations();
+ OwnedModules.markAllLoadedModulesAsFinalized();
+
// Register EH frame data for any module we own which has been loaded
- SmallVector<Module *, 1>::iterator end = Modules.end();
- SmallVector<Module *, 1>::iterator it;
- for (it = Modules.begin(); it != end; ++it) {
- Module *M = *it;
- assert(ModuleStates.find(M) != ModuleStates.end());
-
- if (ModuleStates[M].hasBeenLoaded() &&
- !ModuleStates[M].hasBeenFinalized()) {
- // FIXME: This should be module specific!
- StringRef EHData = Dyld.getEHFrameSection();
- if (!EHData.empty())
- MemMgr.registerEHFrames(EHData);
- ModuleStates[M] = ModuleFinalized;
- }
- }
+ Dyld.registerEHFrames();
// Set page permissions.
MemMgr.finalizeMemory();
// FIXME: Rename this.
void MCJIT::finalizeObject() {
- // FIXME: This is a temporary hack to get around problems with calling
- // finalize multiple times.
- bool finalizeNeeded = false;
- SmallVector<Module *, 1>::iterator end = Modules.end();
- SmallVector<Module *, 1>::iterator it;
- for (it = Modules.begin(); it != end; ++it) {
- Module *M = *it;
- assert(ModuleStates.find(M) != ModuleStates.end());
- if (!ModuleStates[M].hasBeenFinalized())
- finalizeNeeded = true;
-
- // I don't really like this, but the C API depends on this behavior.
- // I suppose it's OK for a deprecated function.
- if (!ModuleStates[M].hasBeenLoaded())
- generateCodeForModule(M);
- }
- if (!finalizeNeeded)
- return;
-
- // Resolve any outstanding relocations.
- Dyld.resolveRelocations();
+ MutexGuard locked(lock);
- // Register EH frame data for any module we own which has been loaded
- for (it = Modules.begin(); it != end; ++it) {
- Module *M = *it;
- assert(ModuleStates.find(M) != ModuleStates.end());
-
- if (ModuleStates[M].hasBeenLoaded() &&
- !ModuleStates[M].hasBeenFinalized()) {
- // FIXME: This should be module specific!
- StringRef EHData = Dyld.getEHFrameSection();
- if (!EHData.empty())
- MemMgr.registerEHFrames(EHData);
- ModuleStates[M] = ModuleFinalized;
- }
+ for (ModulePtrSet::iterator I = OwnedModules.begin_added(),
+ E = OwnedModules.end_added();
+ I != E; ++I) {
+ Module *M = *I;
+ generateCodeForModule(M);
}
- // Set page permissions.
- MemMgr.finalizeMemory();
+ finalizeLoadedModules();
}
void MCJIT::finalizeModule(Module *M) {
- // This must be a module which has already been added to this MCJIT instance.
- assert(std::find(Modules.begin(), Modules.end(), M) != Modules.end());
- assert(ModuleStates.find(M) != ModuleStates.end());
+ MutexGuard locked(lock);
- if (ModuleStates[M].hasBeenFinalized())
- return;
+ // This must be a module which has already been added to this MCJIT instance.
+ assert(OwnedModules.ownsModule(M) && "MCJIT::finalizeModule: Unknown module.");
// If the module hasn't been compiled, just do that.
- if (!ModuleStates[M].hasBeenLoaded())
+ if (!OwnedModules.hasModuleBeenLoaded(M))
generateCodeForModule(M);
- // Resolve any outstanding relocations.
- Dyld.resolveRelocations();
-
- // FIXME: Should this be module specific?
- StringRef EHData = Dyld.getEHFrameSection();
- if (!EHData.empty())
- MemMgr.registerEHFrames(EHData);
-
- // Set page permissions.
- MemMgr.finalizeMemory();
-
- ModuleStates[M] = ModuleFinalized;
+ finalizeLoadedModules();
}
void *MCJIT::getPointerToBasicBlock(BasicBlock *BB) {
}
uint64_t MCJIT::getExistingSymbolAddress(const std::string &Name) {
- // Check with the RuntimeDyld to see if we already have this symbol.
- if (Name[0] == '\1')
- return Dyld.getSymbolLoadAddress(Name.substr(1));
- return Dyld.getSymbolLoadAddress((TM->getMCAsmInfo()->getGlobalPrefix()
- + Name));
+ Mangler Mang(TM);
+ SmallString<128> FullName;
+ Mang.getNameWithPrefix(FullName, Name);
+ return Dyld.getSymbolLoadAddress(FullName);
}
Module *MCJIT::findModuleForSymbol(const std::string &Name,
bool CheckFunctionsOnly) {
+ MutexGuard locked(lock);
+
// If it hasn't already been generated, see if it's in one of our modules.
- SmallVector<Module *, 1>::iterator end = Modules.end();
- SmallVector<Module *, 1>::iterator it;
- for (it = Modules.begin(); it != end; ++it) {
- Module *M = *it;
+ for (ModulePtrSet::iterator I = OwnedModules.begin_added(),
+ E = OwnedModules.end_added();
+ I != E; ++I) {
+ Module *M = *I;
Function *F = M->getFunction(Name);
- if (F && !F->empty())
+ if (F && !F->isDeclaration())
return M;
if (!CheckFunctionsOnly) {
GlobalVariable *G = M->getGlobalVariable(Name);
- if (G)
+ if (G && !G->isDeclaration())
return M;
// FIXME: Do we need to worry about global aliases?
}
uint64_t MCJIT::getSymbolAddress(const std::string &Name,
bool CheckFunctionsOnly)
{
+ MutexGuard locked(lock);
+
// First, check to see if we already have this symbol.
uint64_t Addr = getExistingSymbolAddress(Name);
if (Addr)
if (!M)
return 0;
- // If this is in one of our modules, generate code for that module.
- assert(ModuleStates.find(M) != ModuleStates.end());
- // If the module code has already been generated, we won't find the symbol.
- if (ModuleStates[M].hasBeenLoaded())
- return 0;
-
- // FIXME: We probably need to make sure we aren't in the process of
- // loading or finalizing this module.
generateCodeForModule(M);
// Check the RuntimeDyld table again, it should be there now.
}
uint64_t MCJIT::getGlobalValueAddress(const std::string &Name) {
+ MutexGuard locked(lock);
uint64_t Result = getSymbolAddress(Name, false);
if (Result != 0)
finalizeLoadedModules();
}
uint64_t MCJIT::getFunctionAddress(const std::string &Name) {
+ MutexGuard locked(lock);
uint64_t Result = getSymbolAddress(Name, true);
if (Result != 0)
finalizeLoadedModules();
// Deprecated. Use getFunctionAddress instead.
void *MCJIT::getPointerToFunction(Function *F) {
+ MutexGuard locked(lock);
if (F->isDeclaration() || F->hasAvailableExternallyLinkage()) {
bool AbortOnFailure = !F->hasExternalWeakLinkage();
return Addr;
}
- // If this function doesn't belong to one of our modules, we're done.
Module *M = F->getParent();
- if (std::find(Modules.begin(), Modules.end(), M) == Modules.end())
- return NULL;
-
- assert(ModuleStates.find(M) != ModuleStates.end());
+ bool HasBeenAddedButNotLoaded = OwnedModules.hasModuleBeenAddedButNotLoaded(M);
// Make sure the relevant module has been compiled and loaded.
- if (!ModuleStates[M].hasBeenLoaded())
+ if (HasBeenAddedButNotLoaded)
generateCodeForModule(M);
+ else if (!OwnedModules.hasModuleBeenLoaded(M))
+ // If this function doesn't belong to one of our modules, we're done.
+ return NULL;
// FIXME: Should the Dyld be retaining module information? Probably not.
- // FIXME: Should we be using the mangler for this? Probably.
//
// This is the accessor for the target address, so make sure to check the
// load address of the symbol, not the local address.
- StringRef BaseName = F->getName();
- if (BaseName[0] == '\1')
- return (void*)Dyld.getSymbolLoadAddress(BaseName.substr(1));
- return (void*)Dyld.getSymbolLoadAddress((TM->getMCAsmInfo()->getGlobalPrefix()
- + BaseName).str());
+ Mangler Mang(TM);
+ SmallString<128> Name;
+ Mang.getNameWithPrefix(Name, F);
+ return (void*)Dyld.getSymbolLoadAddress(Name);
}
void *MCJIT::recompileAndRelinkFunction(Function *F) {
report_fatal_error("not yet implemented");
}
+void MCJIT::runStaticConstructorsDestructorsInModulePtrSet(
+ bool isDtors, ModulePtrSet::iterator I, ModulePtrSet::iterator E) {
+ for (; I != E; ++I) {
+ ExecutionEngine::runStaticConstructorsDestructors(*I, isDtors);
+ }
+}
+
+void MCJIT::runStaticConstructorsDestructors(bool isDtors) {
+ // Execute global ctors/dtors for each module in the program.
+ runStaticConstructorsDestructorsInModulePtrSet(
+ isDtors, OwnedModules.begin_added(), OwnedModules.end_added());
+ runStaticConstructorsDestructorsInModulePtrSet(
+ isDtors, OwnedModules.begin_loaded(), OwnedModules.end_loaded());
+ runStaticConstructorsDestructorsInModulePtrSet(
+ isDtors, OwnedModules.begin_finalized(), OwnedModules.end_finalized());
+}
+
+Function *MCJIT::FindFunctionNamedInModulePtrSet(const char *FnName,
+ ModulePtrSet::iterator I,
+ ModulePtrSet::iterator E) {
+ for (; I != E; ++I) {
+ if (Function *F = (*I)->getFunction(FnName))
+ return F;
+ }
+ return 0;
+}
+
+Function *MCJIT::FindFunctionNamed(const char *FnName) {
+ Function *F = FindFunctionNamedInModulePtrSet(
+ FnName, OwnedModules.begin_added(), OwnedModules.end_added());
+ if (!F)
+ F = FindFunctionNamedInModulePtrSet(FnName, OwnedModules.begin_loaded(),
+ OwnedModules.end_loaded());
+ if (!F)
+ F = FindFunctionNamedInModulePtrSet(FnName, OwnedModules.begin_finalized(),
+ OwnedModules.end_finalized());
+ return F;
+}
+
GenericValue MCJIT::runFunction(Function *F,
const std::vector<GenericValue> &ArgValues) {
assert(F && "Function *F was null at entry to run()");
}
void MCJIT::NotifyObjectEmitted(const ObjectImage& Obj) {
MutexGuard locked(lock);
+ MemMgr.notifyObjectLoaded(this, &Obj);
for (unsigned I = 0, S = EventListeners.size(); I < S; ++I) {
EventListeners[I]->NotifyObjectEmitted(Obj);
}
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