#ifndef LLVM_EXECUTION_ENGINE_JIT_MEMMANAGER_H
#define LLVM_EXECUTION_ENGINE_JIT_MEMMANAGER_H
+#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "llvm/Support/DataTypes.h"
+
#include <string>
namespace llvm {
/// memory for the code generated by the JIT. This can be reimplemented by
/// clients that have a strong desire to control how the layout of JIT'd memory
/// works.
-class JITMemoryManager {
+class JITMemoryManager : public RTDyldMemoryManager {
protected:
bool HasGOT;
/// debugging, and may be turned on by default in debug mode.
virtual void setPoisonMemory(bool poison) = 0;
- /// getPointerToNamedFunction - This method returns the address of the
- /// specified function. 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;
-
//===--------------------------------------------------------------------===//
// Global Offset Table Management
//===--------------------------------------------------------------------===//
virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart,
uint8_t *FunctionEnd) = 0;
- /// allocateCodeSection - Allocate a memory block of (at least) the given
- /// size suitable for executable code. The SectionID is a unique identifier
- /// assigned by the JIT and passed through to the memory manager for
- /// the instance class to use if it needs to communicate to the JIT about
- /// a given section after the fact.
- virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID) = 0;
-
- /// allocateDataSection - Allocate a memory block of (at least) the given
- /// size suitable for data. The SectionID is a unique identifier
- /// assigned by the JIT and passed through to the memory manager for
- /// the instance class to use if it needs to communicate to the JIT about
- /// a given section after the fact.
- virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID) = 0;
-
/// allocateSpace - Allocate a memory block of the given size. This method
/// cannot be called between calls to startFunctionBody and endFunctionBody.
virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) = 0;
class ObjectImage;
// RuntimeDyld clients often want to handle the memory management of
-// what gets placed where. For JIT clients, this is an abstraction layer
-// over the JITMemoryManager, which references objects by their source
-// representations in LLVM IR.
+// what gets placed where. For JIT clients, this is the subset of
+// JITMemoryManager required for dynamic loading of binaries.
+//
// FIXME: As the RuntimeDyld fills out, additional routines will be needed
// for the varying types of objects to be allocated.
class RTDyldMemoryManager {
virtual ~RTDyldMemoryManager();
/// allocateCodeSection - Allocate a memory block of (at least) the given
- /// size suitable for executable code.
+ /// size suitable for executable code. The SectionID is a unique identifier
+ /// assigned by the JIT engine, and optionally recorded by the memory manager
+ /// to access a loaded section.
virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID) = 0;
/// allocateDataSection - Allocate a memory block of (at least) the given
- /// size suitable for data.
+ /// size suitable for data. The SectionID is a unique identifier
+ /// assigned by the JIT engine, and optionally recorded by the memory manager
+ /// to access a loaded section.
virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID) = 0;
+ /// getPointerToNamedFunction - This method returns the address of the
+ /// specified function. 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 returns a null pointer. Otherwise, it prints a
+ /// message to stderr and aborts.
virtual void *getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure = true) = 0;
};
add_llvm_library(LLVMMCJIT
MCJIT.cpp
- MCJITMemoryManager.cpp
)
//===----------------------------------------------------------------------===//
#include "MCJIT.h"
-#include "MCJITMemoryManager.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/ExecutionEngine/GenericValue.h"
// FIXME: Don't do this here.
sys::DynamicLibrary::LoadLibraryPermanently(0, NULL);
- return new MCJIT(M, TM, new MCJITMemoryManager(JMM), GVsWithCode);
+ return new MCJIT(M, TM, JMM, GVsWithCode);
}
MCJIT::MCJIT(Module *m, TargetMachine *tm, RTDyldMemoryManager *MM,
+++ /dev/null
-//==-- MCJITMemoryManager.cpp - Definition for the Memory Manager -*-C++ -*-==//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCJITMemoryManager.h"
-
-using namespace llvm;
-
-void MCJITMemoryManager::anchor() { }
+++ /dev/null
-//===-- MCJITMemoryManager.h - Definition for the Memory Manager ---C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_EXECUTIONENGINE_MCJITMEMORYMANAGER_H
-#define LLVM_LIB_EXECUTIONENGINE_MCJITMEMORYMANAGER_H
-
-#include "llvm/Module.h"
-#include "llvm/ExecutionEngine/JITMemoryManager.h"
-#include "llvm/ExecutionEngine/RuntimeDyld.h"
-#include <assert.h>
-
-namespace llvm {
-
-// The MCJIT memory manager is a layer between the standard JITMemoryManager
-// and the RuntimeDyld interface that maps objects, by name, onto their
-// matching LLVM IR counterparts in the module(s) being compiled.
-class MCJITMemoryManager : public RTDyldMemoryManager {
- virtual void anchor();
- OwningPtr<JITMemoryManager> JMM;
-
-public:
- MCJITMemoryManager(JITMemoryManager *jmm) :
- JMM(jmm?jmm:JITMemoryManager::CreateDefaultMemManager()) {}
-
- uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID) {
- return JMM->allocateDataSection(Size, Alignment, SectionID);
- }
-
- uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID) {
- return JMM->allocateCodeSection(Size, Alignment, SectionID);
- }
-
- virtual void *getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure = true) {
- return JMM->getPointerToNamedFunction(Name, AbortOnFailure);
- }
-
-};
-
-} // End llvm namespace
-
-#endif
// the data cache but not to the instruction cache.
virtual void invalidateInstructionCache();
- // The MCJITMemoryManager doesn't use the following functions, so we don't
+ // The RTDyldMemoryManager doesn't use the following functions, so we don't
// need implement them.
virtual void setMemoryWritable() {
llvm_unreachable("Unexpected call!");
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