diff options
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/ExecutionEngine/RTDyldMemoryManager.h | 76 | ||||
| -rw-r--r-- | include/llvm/ExecutionEngine/RuntimeDyld.h | 53 | ||||
| -rw-r--r-- | include/llvm/ExecutionEngine/SectionMemoryManager.h | 11 |
3 files changed, 77 insertions, 63 deletions
diff --git a/include/llvm/ExecutionEngine/RTDyldMemoryManager.h b/include/llvm/ExecutionEngine/RTDyldMemoryManager.h new file mode 100644 index 0000000000..2e1fc56512 --- /dev/null +++ b/include/llvm/ExecutionEngine/RTDyldMemoryManager.h @@ -0,0 +1,76 @@ +//===-- RTDyldMemoryManager.cpp - Memory manager for MC-JIT -----*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Interface of the runtime dynamic memory manager base class. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_EXECUTIONENGINE_RT_DYLD_MEMORY_MANAGER_H +#define LLVM_EXECUTIONENGINE_RT_DYLD_MEMORY_MANAGER_H + +#include "llvm/ADT/StringRef.h" +#include "llvm/Support/CBindingWrapping.h" +#include "llvm/Support/Memory.h" +#include "llvm-c/ExecutionEngine.h" + +namespace llvm { + +// RuntimeDyld clients often want to handle the memory management of +// 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 { + RTDyldMemoryManager(const RTDyldMemoryManager&) LLVM_DELETED_FUNCTION; + void operator=(const RTDyldMemoryManager&) LLVM_DELETED_FUNCTION; +public: + RTDyldMemoryManager() {} + virtual ~RTDyldMemoryManager(); + + /// Allocate a memory block of (at least) the given 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; + + /// Allocate a memory block of (at least) the given 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, bool IsReadOnly) = 0; + + /// Register the EH frames with the runtime so that c++ exceptions work. + virtual void registerEHFrames(StringRef SectionData); + + /// This method returns the address of the specified function. As such it is + /// only useful for resolving library symbols, not code generated symbols. + /// + /// If \p 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); + + /// This method is called when object loading is complete and section page + /// permissions can be applied. It is up to the memory manager implementation + /// to decide whether or not to act on this method. The memory manager will + /// typically allocate all sections as read-write and then apply specific + /// permissions when this method is called. Code sections cannot be executed + /// until this function has been called. In addition, any cache coherency + /// operations needed to reliably use the memory are also performed. + /// + /// Returns true if an error occurred, false otherwise. + virtual bool finalizeMemory(std::string *ErrMsg = 0) = 0; +}; + +} // namespace llvm + +#endif // LLVM_EXECUTIONENGINE_RT_DYLD_MEMORY_MANAGER_H diff --git a/include/llvm/ExecutionEngine/RuntimeDyld.h b/include/llvm/ExecutionEngine/RuntimeDyld.h index 7dba040961..1a573171a4 100644 --- a/include/llvm/ExecutionEngine/RuntimeDyld.h +++ b/include/llvm/ExecutionEngine/RuntimeDyld.h @@ -16,6 +16,7 @@ #include "llvm/ADT/StringRef.h" #include "llvm/ExecutionEngine/ObjectBuffer.h" +#include "llvm/ExecutionEngine/RTDyldMemoryManager.h" #include "llvm/Support/Memory.h" namespace llvm { @@ -23,58 +24,6 @@ namespace llvm { class RuntimeDyldImpl; class ObjectImage; -// RuntimeDyld clients often want to handle the memory management of -// 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 { - RTDyldMemoryManager(const RTDyldMemoryManager&) LLVM_DELETED_FUNCTION; - void operator=(const RTDyldMemoryManager&) LLVM_DELETED_FUNCTION; -public: - RTDyldMemoryManager() {} - virtual ~RTDyldMemoryManager(); - - /// Allocate a memory block of (at least) the given 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; - - /// Allocate a memory block of (at least) the given 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, bool IsReadOnly) = 0; - - /// 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; - - /// This method is called when object loading is complete and section page - /// permissions can be applied. It is up to the memory manager implementation - /// to decide whether or not to act on this method. The memory manager will - /// typically allocate all sections as read-write and then apply specific - /// permissions when this method is called. Code sections cannot be executed - /// until this function has been called. In addition, any cache coherency - /// operations needed to reliably use the memory are also performed. - /// - /// Returns true if an error occurred, false otherwise. - virtual bool finalizeMemory(std::string *ErrMsg = 0) = 0; - - /// Register the EH frames with the runtime so that c++ exceptions work. The - /// default implementation does nothing. Look at SectionMemoryManager for one - /// that uses __register_frame. - virtual void registerEHFrames(StringRef SectionData); -}; - class RuntimeDyld { RuntimeDyld(const RuntimeDyld &) LLVM_DELETED_FUNCTION; void operator=(const RuntimeDyld &) LLVM_DELETED_FUNCTION; diff --git a/include/llvm/ExecutionEngine/SectionMemoryManager.h b/include/llvm/ExecutionEngine/SectionMemoryManager.h index fc8dacfcc0..6ee2a2aae5 100644 --- a/include/llvm/ExecutionEngine/SectionMemoryManager.h +++ b/include/llvm/ExecutionEngine/SectionMemoryManager.h @@ -73,17 +73,6 @@ public: /// \returns true if an error occurred, false otherwise. virtual bool finalizeMemory(std::string *ErrMsg = 0); - void registerEHFrames(StringRef SectionData); - - /// This method returns the address of the specified function. As such it is - /// only useful for resolving library symbols, not code generated symbols. - /// - /// If \p 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); - /// \brief Invalidate instruction cache for code sections. /// /// Some platforms with separate data cache and instruction cache require |