LLVM
8.0.1
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#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
Classes | |
struct | EHFrame |
Public Member Functions | |
RTDyldMemoryManager ()=default | |
RTDyldMemoryManager (const RTDyldMemoryManager &)=delete | |
void | operator= (const RTDyldMemoryManager &)=delete |
~RTDyldMemoryManager () override | |
void | registerEHFrames (uint8_t *Addr, uint64_t LoadAddr, size_t Size) override |
Register the EH frames with the runtime so that c++ exceptions work. More... | |
void | deregisterEHFrames () override |
virtual uint64_t | getSymbolAddress (const std::string &Name) |
Legacy symbol lookup - DEPRECATED! Please override findSymbol instead. More... | |
JITSymbol | findSymbol (const std::string &Name) override |
This method returns a RuntimeDyld::SymbolInfo for the specified function or variable. More... | |
virtual uint64_t | getSymbolAddressInLogicalDylib (const std::string &Name) |
Legacy symbol lookup – DEPRECATED! Please override findSymbolInLogicalDylib instead. More... | |
JITSymbol | findSymbolInLogicalDylib (const std::string &Name) override |
Default to treating all modules as separate. More... | |
virtual void * | getPointerToNamedFunction (const std::string &Name, bool AbortOnFailure=true) |
This method returns the address of the specified function. More... | |
Public Member Functions inherited from llvm::MCJITMemoryManager | |
virtual void | notifyObjectLoaded (ExecutionEngine *EE, const object::ObjectFile &) |
This method is called after an object has been loaded into memory but before relocations are applied to the loaded sections. More... | |
Public Member Functions inherited from llvm::RuntimeDyld::MemoryManager | |
MemoryManager ()=default | |
virtual | ~MemoryManager ()=default |
virtual uint8_t * | allocateCodeSection (uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName)=0 |
Allocate a memory block of (at least) the given size suitable for executable code. More... | |
virtual uint8_t * | allocateDataSection (uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName, bool IsReadOnly)=0 |
Allocate a memory block of (at least) the given size suitable for data. More... | |
virtual void | reserveAllocationSpace (uintptr_t CodeSize, uint32_t CodeAlign, uintptr_t RODataSize, uint32_t RODataAlign, uintptr_t RWDataSize, uint32_t RWDataAlign) |
Inform the memory manager about the total amount of memory required to allocate all sections to be loaded: CodeSize - the total size of all code sections DataSizeRO - the total size of all read-only data sections DataSizeRW - the total size of all read-write data sections. More... | |
virtual bool | needsToReserveAllocationSpace () |
Override to return true to enable the reserveAllocationSpace callback. More... | |
virtual bool | finalizeMemory (std::string *ErrMsg=nullptr)=0 |
This method is called when object loading is complete and section page permissions can be applied. More... | |
virtual void | notifyObjectLoaded (RuntimeDyld &RTDyld, const object::ObjectFile &Obj) |
This method is called after an object has been loaded into memory but before relocations are applied to the loaded sections. More... | |
Public Member Functions inherited from llvm::LegacyJITSymbolResolver | |
void | lookup (const LookupSet &Symbols, OnResolvedFunction OnResolved) final |
Performs lookup by, for each symbol, first calling findSymbolInLogicalDylib and if that fails calling findSymbol. More... | |
Expected< LookupSet > | getResponsibilitySet (const LookupSet &Symbols) final |
Performs flags lookup by calling findSymbolInLogicalDylib and returning the flags value for that symbol. More... | |
Public Member Functions inherited from llvm::JITSymbolResolver | |
virtual | ~JITSymbolResolver ()=default |
Static Public Member Functions | |
static void | registerEHFramesInProcess (uint8_t *Addr, size_t Size) |
Register EH frames in the current process. More... | |
static void | deregisterEHFramesInProcess (uint8_t *Addr, size_t Size) |
Deregister EH frames in the current proces. More... | |
static uint64_t | getSymbolAddressInProcess (const std::string &Name) |
This method returns the address of the specified function or variable in the current process. More... | |
Protected Types | |
typedef std::vector< EHFrame > | EHFrameInfos |
Protected Attributes | |
EHFrameInfos | EHFrames |
Additional Inherited Members | |
Public Types inherited from llvm::JITSymbolResolver | |
using | LookupSet = std::set< StringRef > |
using | LookupResult = std::map< StringRef, JITEvaluatedSymbol > |
using | OnResolvedFunction = std::function< void(Expected< LookupResult >)> |
Definition at line 61 of file RTDyldMemoryManager.h.
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protected |
Definition at line 146 of file RTDyldMemoryManager.h.
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default |
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delete |
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override |
Definition at line 33 of file RTDyldMemoryManager.cpp.
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overridevirtual |
Implements llvm::RuntimeDyld::MemoryManager.
Definition at line 143 of file RTDyldMemoryManager.cpp.
References deregisterEHFramesInProcess(), and EHFrames.
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static |
Deregister EH frames in the current proces.
Definition at line 130 of file RTDyldMemoryManager.cpp.
References llvm::__deregister_frame().
Referenced by deregisterEHFrames().
This method returns a RuntimeDyld::SymbolInfo for the specified function or variable.
It is used to resolve symbols during module linking.
By default this falls back on the legacy lookup method: 'getSymbolAddress'. The address returned by getSymbolAddress is treated as a strong, exported symbol, consistent with historical treatment by RuntimeDyld.
Clients writing custom RTDyldMemoryManagers are encouraged to override this method and return a SymbolInfo with the flags set correctly. This is necessary for RuntimeDyld to correctly handle weak and non-exported symbols.
Implements llvm::LegacyJITSymbolResolver.
Definition at line 101 of file RTDyldMemoryManager.h.
References llvm::JITSymbolFlags::Exported.
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inlineoverridevirtual |
Default to treating all modules as separate.
By default this falls back on the legacy lookup method: 'getSymbolAddressInLogicalDylib'. The address returned by getSymbolAddressInLogicalDylib is treated as a strong, exported symbol, consistent with historical treatment by RuntimeDyld.
Clients writing custom RTDyldMemoryManagers are encouraged to override this method and return a SymbolInfo with the flags set correctly. This is necessary for RuntimeDyld to correctly handle weak and non-exported symbols.
Implements llvm::LegacyJITSymbolResolver.
Definition at line 124 of file RTDyldMemoryManager.h.
References llvm::JITSymbolFlags::Exported.
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virtual |
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.
This function is deprecated for memory managers to be used with MCJIT or RuntimeDyld. Use getSymbolAddress instead.
Definition at line 290 of file RTDyldMemoryManager.cpp.
References getSymbolAddress(), and llvm::report_fatal_error().
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inlinevirtual |
Legacy symbol lookup - DEPRECATED! Please override findSymbol instead.
This method returns the address of the specified function or variable. It is used to resolve symbols during module linking.
Definition at line 86 of file RTDyldMemoryManager.h.
Referenced by getPointerToNamedFunction().
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inlinevirtual |
Legacy symbol lookup – DEPRECATED! Please override findSymbolInLogicalDylib instead.
Default to treating all modules as separate.
Definition at line 109 of file RTDyldMemoryManager.h.
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static |
This method returns the address of the specified function or variable in the current process.
Definition at line 229 of file RTDyldMemoryManager.cpp.
References llvm::jit_noop(), and llvm::sys::DynamicLibrary::SearchForAddressOfSymbol().
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delete |
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overridevirtual |
Register the EH frames with the runtime so that c++ exceptions work.
Addr
parameter provides the local address of the EH frame section data, while LoadAddr
provides the address of the data in the target address space. If the section has not been remapped (which will usually be the case for local execution) these two values will be the same.
Implements llvm::RuntimeDyld::MemoryManager.
Definition at line 137 of file RTDyldMemoryManager.cpp.
References EHFrames, and registerEHFramesInProcess().
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static |
Register EH frames in the current process.
Definition at line 120 of file RTDyldMemoryManager.cpp.
References llvm::__register_frame().
Referenced by llvm::__deregister_frame(), and registerEHFrames().
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protected |
Definition at line 147 of file RTDyldMemoryManager.h.
Referenced by deregisterEHFrames(), and registerEHFrames().