mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
cf852dc49b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135037 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
//===-- RuntimeDyld.h - Run-time dynamic linker 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 for the runtime dynamic linker facilities of the MC-JIT.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_RUNTIME_DYLD_H
|
|
#define LLVM_RUNTIME_DYLD_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Memory.h"
|
|
|
|
namespace llvm {
|
|
|
|
class RuntimeDyldImpl;
|
|
class MemoryBuffer;
|
|
|
|
// 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.
|
|
// 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&); // DO NOT IMPLEMENT
|
|
void operator=(const RTDyldMemoryManager&); // DO NOT IMPLEMENT
|
|
public:
|
|
RTDyldMemoryManager() {}
|
|
virtual ~RTDyldMemoryManager();
|
|
|
|
// Allocate ActualSize bytes, or more, for the named function. Return
|
|
// a pointer to the allocated memory and update Size to reflect how much
|
|
// memory was acutally allocated.
|
|
virtual uint8_t *startFunctionBody(const char *Name, uintptr_t &Size) = 0;
|
|
|
|
// Mark the end of the function, including how much of the allocated
|
|
// memory was actually used.
|
|
virtual void endFunctionBody(const char *Name, uint8_t *FunctionStart,
|
|
uint8_t *FunctionEnd) = 0;
|
|
};
|
|
|
|
class RuntimeDyld {
|
|
RuntimeDyld(const RuntimeDyld &); // DO NOT IMPLEMENT
|
|
void operator=(const RuntimeDyld &); // DO NOT IMPLEMENT
|
|
|
|
// RuntimeDyldImpl is the actual class. RuntimeDyld is just the public
|
|
// interface.
|
|
RuntimeDyldImpl *Dyld;
|
|
RTDyldMemoryManager *MM;
|
|
public:
|
|
RuntimeDyld(RTDyldMemoryManager*);
|
|
~RuntimeDyld();
|
|
|
|
bool loadObject(MemoryBuffer *InputBuffer);
|
|
// Get the address of our local copy of the symbol. This may or may not
|
|
// be the address used for relocation (clients can copy the data around
|
|
// and resolve relocatons based on where they put it).
|
|
void *getSymbolAddress(StringRef Name);
|
|
// Resolve the relocations for all symbols we currently know about.
|
|
void resolveRelocations();
|
|
// Change the address associated with a symbol when resolving relocations.
|
|
// Any relocations already associated with the symbol will be re-resolved.
|
|
void reassignSymbolAddress(StringRef Name, uint8_t *Addr);
|
|
StringRef getErrorString();
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|