mirror of
https://github.com/c64scene-ar/llvm-6502.git
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3e29671cca
(and hopefully on Windows). The bots have been down most of the day because of this, and it's not clear to me what all will be required to fix it. The commits started with r153205, then r153207, r153208, and r153221. The first commit seems to be the real culprit, but I couldn't revert a smaller number of patches. When resubmitting, r153207 and r153208 should be folded into r153205, they were simple build fixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153241 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
3.6 KiB
C++
95 lines
3.6 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_RUNTIME_DYLD_H
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#define LLVM_RUNTIME_DYLD_H
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#include "llvm/ADT/StringRef.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 MemoryBuffer;
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// RuntimeDyld clients often want to handle the memory management of
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// what gets placed where. For JIT clients, this is an abstraction layer
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// over the JITMemoryManager, which references objects by their source
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// representations in LLVM IR.
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// FIXME: As the RuntimeDyld fills out, additional routines will be needed
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// for the varying types of objects to be allocated.
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class RTDyldMemoryManager {
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RTDyldMemoryManager(const RTDyldMemoryManager&); // DO NOT IMPLEMENT
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void operator=(const RTDyldMemoryManager&); // DO NOT IMPLEMENT
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public:
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RTDyldMemoryManager() {}
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virtual ~RTDyldMemoryManager();
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/// allocateCodeSection - Allocate a memory block of (at least) the given
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/// size suitable for executable code.
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virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
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unsigned SectionID) = 0;
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/// allocateDataSection - Allocate a memory block of (at least) the given
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/// size suitable for data.
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virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
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unsigned SectionID) = 0;
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// Allocate ActualSize bytes, or more, for the named function. Return
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// a pointer to the allocated memory and update Size to reflect how much
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// memory was acutally allocated.
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virtual uint8_t *startFunctionBody(const char *Name, uintptr_t &Size) = 0;
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// Mark the end of the function, including how much of the allocated
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// memory was actually used.
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virtual void endFunctionBody(const char *Name, uint8_t *FunctionStart,
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uint8_t *FunctionEnd) = 0;
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};
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class RuntimeDyld {
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RuntimeDyld(const RuntimeDyld &); // DO NOT IMPLEMENT
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void operator=(const RuntimeDyld &); // DO NOT IMPLEMENT
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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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bool loadObject(MemoryBuffer *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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// Resolve the relocations for all symbols we currently know about.
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void resolveRelocations();
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/// mapSectionAddress - 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(void *LocalAddress, uint64_t TargetAddress);
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StringRef getErrorString();
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};
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} // end namespace llvm
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#endif
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