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a4ea4a7203
libExecutionEngine. Move method implementations that aren't specific to allocation out of SectionMemoryManager and into RTDyldMemoryManager. This is in preparation for exposing RTDyldMemoryManager through the C API. This is a fixed version of r182407 and r182411. That first revision broke builds because I forgot to move the conditional includes of various POSIX headers from SectionMemoryManager into RTDyldMemoryManager. Those includes are necessary because of how getPointerToNamedFunction works around the glibc libc_nonshared.a thing. The latter revision still broke things because I forgot to include llvm/Config/config.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182418 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
//===-- RuntimeDyld.h - Run-time dynamic linker for MC-JIT ------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Interface for the runtime dynamic linker facilities of the MC-JIT.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_RUNTIMEDYLD_H
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#define LLVM_EXECUTIONENGINE_RUNTIMEDYLD_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ExecutionEngine/ObjectBuffer.h"
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#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
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#include "llvm/Support/Memory.h"
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namespace llvm {
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class RuntimeDyldImpl;
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class ObjectImage;
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class RuntimeDyld {
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RuntimeDyld(const RuntimeDyld &) LLVM_DELETED_FUNCTION;
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void operator=(const RuntimeDyld &) LLVM_DELETED_FUNCTION;
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// RuntimeDyldImpl is the actual class. RuntimeDyld is just the public
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// interface.
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RuntimeDyldImpl *Dyld;
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RTDyldMemoryManager *MM;
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protected:
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// Change the address associated with a section when resolving relocations.
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// Any relocations already associated with the symbol will be re-resolved.
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void reassignSectionAddress(unsigned SectionID, uint64_t Addr);
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public:
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RuntimeDyld(RTDyldMemoryManager *);
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~RuntimeDyld();
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/// Prepare the object contained in the input buffer for execution.
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/// Ownership of the input buffer is transferred to the ObjectImage
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/// instance returned from this function if successful. In the case of load
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/// failure, the input buffer will be deleted.
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ObjectImage *loadObject(ObjectBuffer *InputBuffer);
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/// Get the address of our local copy of the symbol. This may or may not
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/// be the address used for relocation (clients can copy the data around
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/// and resolve relocatons based on where they put it).
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void *getSymbolAddress(StringRef Name);
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/// Get the address of the target copy of the symbol. This is the address
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/// used for relocation.
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uint64_t getSymbolLoadAddress(StringRef Name);
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/// Resolve the relocations for all symbols we currently know about.
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void resolveRelocations();
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/// Map a section to its target address space value.
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/// Map the address of a JIT section as returned from the memory manager
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/// to the address in the target process as the running code will see it.
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/// This is the address which will be used for relocation resolution.
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void mapSectionAddress(const void *LocalAddress, uint64_t TargetAddress);
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StringRef getErrorString();
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StringRef getEHFrameSection();
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};
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} // end namespace llvm
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#endif
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