#ifndef LLVM_EXECUTION_ENGINE_H
#define LLVM_EXECUTION_ENGINE_H
-#include <vector>
-#include <map>
-#include <string>
+#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/ValueMap.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ValueHandle.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
+#include <vector>
+#include <map>
+#include <string>
namespace llvm {
class Module;
class MutexGuard;
class TargetData;
+class Triple;
class Type;
/// \brief Helper class for helping synchronize access to the global address map
/// The list of Modules that we are JIT'ing from. We use a SmallVector to
/// optimize for the case where there is only one module.
SmallVector<Module*, 1> Modules;
-
- void setTargetData(const TargetData *td) {
- TD = td;
- }
-
+
+ void setTargetData(const TargetData *td) { TD = td; }
+
/// getMemoryforGV - Allocate memory for a global variable.
virtual char *getMemoryForGV(const GlobalVariable *GV);
Module *M,
std::string *ErrorStr,
JITMemoryManager *JMM,
- CodeGenOpt::Level OptLevel,
bool GVsWithCode,
- CodeModel::Model CMM,
- StringRef MArch,
- StringRef MCPU,
- const SmallVectorImpl<std::string>& MAttrs);
+ TargetMachine *TM);
static ExecutionEngine *(*MCJITCtor)(
Module *M,
std::string *ErrorStr,
JITMemoryManager *JMM,
- CodeGenOpt::Level OptLevel,
bool GVsWithCode,
- CodeModel::Model CMM,
- StringRef MArch,
- StringRef MCPU,
- const SmallVectorImpl<std::string>& MAttrs);
- static ExecutionEngine *(*InterpCtor)(Module *M,
- std::string *ErrorStr);
+ TargetMachine *TM);
+ static ExecutionEngine *(*InterpCtor)(Module *M, std::string *ErrorStr);
/// LazyFunctionCreator - If an unknown function is needed, this function
/// pointer is invoked to create it. If this returns null, the JIT will
/// abort.
void *(*LazyFunctionCreator)(const std::string &);
-
+
/// ExceptionTableRegister - If Exception Handling is set, the JIT will
/// register dwarf tables with this function.
typedef void (*EERegisterFn)(void*);
EERegisterFn ExceptionTableRegister;
EERegisterFn ExceptionTableDeregister;
- std::vector<void*> AllExceptionTables;
+ /// This maps functions to their exception tables frames.
+ DenseMap<const Function*, void*> AllExceptionTables;
+
public:
/// lock - This lock protects the ExecutionEngine, JIT, JITResolver and
/// \param GVsWithCode - Allocating globals with code breaks
/// freeMachineCodeForFunction and is probably unsafe and bad for performance.
/// However, we have clients who depend on this behavior, so we must support
- /// it. Eventually, when we're willing to break some backwards compatability,
+ /// it. Eventually, when we're willing to break some backwards compatibility,
/// this flag should be flipped to false, so that by default
/// freeMachineCodeForFunction works.
static ExecutionEngine *create(Module *M,
bool ForceInterpreter = false,
std::string *ErrorStr = 0,
CodeGenOpt::Level OptLevel =
- CodeGenOpt::Default,
+ CodeGenOpt::Default,
bool GVsWithCode = true);
/// createJIT - This is the factory method for creating a JIT for the current
std::string *ErrorStr = 0,
JITMemoryManager *JMM = 0,
CodeGenOpt::Level OptLevel =
- CodeGenOpt::Default,
+ CodeGenOpt::Default,
bool GVsWithCode = true,
+ Reloc::Model RM = Reloc::Default,
CodeModel::Model CMM =
- CodeModel::Default);
+ CodeModel::JITDefault);
/// addModule - Add a Module to the list of modules that we can JIT from.
/// Note that this takes ownership of the Module: when the ExecutionEngine is
virtual void addModule(Module *M) {
Modules.push_back(M);
}
-
+
//===--------------------------------------------------------------------===//
const TargetData *getTargetData() const { return TD; }
/// defines FnName. This is very slow operation and shouldn't be used for
/// general code.
Function *FindFunctionNamed(const char *FnName);
-
+
/// runFunction - Execute the specified function with the specified arguments,
/// and return the result.
virtual GenericValue runFunction(Function *F,
const std::vector<GenericValue> &ArgValues) = 0;
+ /// getPointerToNamedFunction - This method returns the address of the
+ /// specified function by using the dlsym function call. As such it is only
+ /// useful for resolving library symbols, not code generated symbols.
+ ///
+ /// If AbortOnFailure is false and no function with the given name is
+ /// found, this function silently returns a null pointer. Otherwise,
+ /// it prints a message to stderr and aborts.
+ ///
+ virtual void *getPointerToNamedFunction(const std::string &Name,
+ bool AbortOnFailure = true) = 0;
+
+ /// mapSectionAddress - map a section to its target address space value.
+ /// Map the address of a JIT section as returned from the memory manager
+ /// to the address in the target process as the running code will see it.
+ /// This is the address which will be used for relocation resolution.
+ virtual void mapSectionAddress(void *LocalAddress, uint64_t TargetAddress) {
+ llvm_unreachable("Re-mapping of section addresses not supported with this "
+ "EE!");
+ }
+
/// runStaticConstructorsDestructors - This method is used to execute all of
/// the static constructors or destructors for a program.
///
///
/// \param isDtors - Run the destructors instead of constructors.
void runStaticConstructorsDestructors(Module *module, bool isDtors);
-
-
+
+
/// runFunctionAsMain - This is a helper function which wraps runFunction to
/// handle the common task of starting up main with the specified argc, argv,
/// and envp parameters.
/// existing data in memory. Mappings are automatically removed when their
/// GlobalValue is destroyed.
void addGlobalMapping(const GlobalValue *GV, void *Addr);
-
+
/// clearAllGlobalMappings - Clear all global mappings and start over again,
/// for use in dynamic compilation scenarios to move globals.
void clearAllGlobalMappings();
-
+
/// clearGlobalMappingsFromModule - Clear all global mappings that came from a
/// particular module, because it has been removed from the JIT.
void clearGlobalMappingsFromModule(Module *M);
-
+
/// updateGlobalMapping - Replace an existing mapping for GV with a new
/// address. This updates both maps as required. If "Addr" is null, the
/// entry for the global is removed from the mappings. This returns the old
/// value of the pointer, or null if it was not in the map.
void *updateGlobalMapping(const GlobalValue *GV, void *Addr);
-
+
/// getPointerToGlobalIfAvailable - This returns the address of the specified
/// global value if it is has already been codegen'd, otherwise it returns
/// null.
/// different ways. Return the representation for a blockaddress of the
/// specified block.
virtual void *getPointerToBasicBlock(BasicBlock *BB) = 0;
-
+
/// getPointerToFunctionOrStub - If the specified function has been
/// code-gen'd, return a pointer to the function. If not, compile it, or use
/// a stub to implement lazy compilation if available. See
/// GenericValue *. It is not a pointer to a GenericValue containing the
/// address at which to store Val.
void StoreValueToMemory(const GenericValue &Val, GenericValue *Ptr,
- const Type *Ty);
+ Type *Ty);
void InitializeMemory(const Constant *Init, void *Addr);
void InstallLazyFunctionCreator(void* (*P)(const std::string &)) {
LazyFunctionCreator = P;
}
-
+
/// InstallExceptionTableRegister - The JIT will use the given function
/// to register the exception tables it generates.
void InstallExceptionTableRegister(EERegisterFn F) {
void InstallExceptionTableDeregister(EERegisterFn F) {
ExceptionTableDeregister = F;
}
-
+
/// RegisterTable - Registers the given pointer as an exception table. It
/// uses the ExceptionTableRegister function.
- void RegisterTable(void* res) {
+ void RegisterTable(const Function *fn, void* res) {
if (ExceptionTableRegister) {
ExceptionTableRegister(res);
- AllExceptionTables.push_back(res);
+ AllExceptionTables[fn] = res;
+ }
+ }
+
+ /// DeregisterTable - Deregisters the exception frame previously registered
+ /// for the given function.
+ void DeregisterTable(const Function *Fn) {
+ if (ExceptionTableDeregister) {
+ DenseMap<const Function*, void*>::iterator frame =
+ AllExceptionTables.find(Fn);
+ if(frame != AllExceptionTables.end()) {
+ ExceptionTableDeregister(frame->second);
+ AllExceptionTables.erase(frame);
+ }
}
}
void EmitGlobalVariable(const GlobalVariable *GV);
GenericValue getConstantValue(const Constant *C);
- void LoadValueFromMemory(GenericValue &Result, GenericValue *Ptr,
- const Type *Ty);
+ void LoadValueFromMemory(GenericValue &Result, GenericValue *Ptr,
+ Type *Ty);
};
namespace EngineKind {
CodeGenOpt::Level OptLevel;
JITMemoryManager *JMM;
bool AllocateGVsWithCode;
+ TargetOptions Options;
+ Reloc::Model RelocModel;
CodeModel::Model CMModel;
std::string MArch;
std::string MCPU;
ErrorStr = NULL;
OptLevel = CodeGenOpt::Default;
JMM = NULL;
+ Options = TargetOptions();
AllocateGVsWithCode = false;
- CMModel = CodeModel::Default;
+ RelocModel = Reloc::Default;
+ CMModel = CodeModel::JITDefault;
UseMCJIT = false;
}
return *this;
}
+ /// setTargetOptions - Set the target options that the ExecutionEngine
+ /// target is using. Defaults to TargetOptions().
+ EngineBuilder &setTargetOptions(const TargetOptions &Opts) {
+ Options = Opts;
+ return *this;
+ }
+
+ /// setRelocationModel - Set the relocation model that the ExecutionEngine
+ /// target is using. Defaults to target specific default "Reloc::Default".
+ EngineBuilder &setRelocationModel(Reloc::Model RM) {
+ RelocModel = RM;
+ return *this;
+ }
+
/// setCodeModel - Set the CodeModel that the ExecutionEngine target
- /// data is using. Defaults to target specific default "CodeModel::Default".
+ /// data is using. Defaults to target specific default
+ /// "CodeModel::JITDefault".
EngineBuilder &setCodeModel(CodeModel::Model M) {
CMModel = M;
return *this;
/// setUseMCJIT - Set whether the MC-JIT implementation should be used
/// (experimental).
- void setUseMCJIT(bool Value) {
+ EngineBuilder &setUseMCJIT(bool Value) {
UseMCJIT = Value;
+ return *this;
}
/// setMAttrs - Set cpu-specific attributes.
return *this;
}
- ExecutionEngine *create();
+ TargetMachine *selectTarget();
+
+ /// selectTarget - Pick a target either via -march or by guessing the native
+ /// arch. Add any CPU features specified via -mcpu or -mattr.
+ TargetMachine *selectTarget(const Triple &TargetTriple,
+ StringRef MArch,
+ StringRef MCPU,
+ const SmallVectorImpl<std::string>& MAttrs);
+
+ ExecutionEngine *create() {
+ return create(selectTarget());
+ }
+
+ ExecutionEngine *create(TargetMachine *TM);
};
} // End llvm namespace
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