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//===-- RuntimeDyldELF.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.
//
//===----------------------------------------------------------------------===//
//
// ELF support for MC-JIT runtime dynamic linker.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_RUNTIME_DYLD_ELF_H
#define LLVM_RUNTIME_DYLD_ELF_H
#include "RuntimeDyldImpl.h"
using namespace llvm;
namespace llvm {
class RuntimeDyldELF : public RuntimeDyldImpl {
// For each symbol, keep a list of relocations based on it. Anytime
// its address is reassigned (the JIT re-compiled the function, e.g.),
// the relocations get re-resolved.
struct RelocationEntry {
// Function or section this relocation is contained in.
std::string Target;
// Offset into the target function or section for the relocation.
uint32_t Offset;
// Relocation type
uint32_t Type;
// Addend encoded in the instruction itself, if any.
int32_t Addend;
// Has the relocation been recalcuated as an offset within a function?
bool IsFunctionRelative;
// Has this relocation been resolved previously?
bool isResolved;
RelocationEntry(StringRef t,
uint32_t offset,
uint32_t type,
int32_t addend,
bool isFunctionRelative)
: Target(t)
, Offset(offset)
, Type(type)
, Addend(addend)
, IsFunctionRelative(isFunctionRelative)
, isResolved(false) { }
};
typedef SmallVector<RelocationEntry, 4> RelocationList;
StringMap<RelocationList> Relocations;
unsigned Arch;
void resolveRelocations();
void resolveX86_64Relocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveX86Relocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveArmRelocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveRelocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
public:
RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
bool loadObject(MemoryBuffer *InputBuffer);
void reassignSymbolAddress(StringRef Name, uint8_t *Addr);
void reassignSectionAddress(unsigned SectionID, uint64_t Addr);
bool isCompatibleFormat(const MemoryBuffer *InputBuffer) const;
};
} // end namespace llvm
#endif
//===-- RuntimeDyldELF.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.
//
//===----------------------------------------------------------------------===//
//
// ELF support for MC-JIT runtime dynamic linker.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_RUNTIME_DYLD_ELF_H
#define LLVM_RUNTIME_DYLD_ELF_H
#include "RuntimeDyldImpl.h"
using namespace llvm;
namespace llvm {
class RuntimeDyldELF : public RuntimeDyldImpl {
// For each symbol, keep a list of relocations based on it. Anytime
// its address is reassigned (the JIT re-compiled the function, e.g.),
// the relocations get re-resolved.
struct RelocationEntry {
// Function or section this relocation is contained in.
std::string Target;
// Offset into the target function or section for the relocation.
uint32_t Offset;
// Relocation type
uint32_t Type;
// Addend encoded in the instruction itself, if any.
int32_t Addend;
// Has the relocation been recalcuated as an offset within a function?
bool IsFunctionRelative;
// Has this relocation been resolved previously?
bool isResolved;
RelocationEntry(StringRef t,
uint32_t offset,
uint32_t type,
int32_t addend,
bool isFunctionRelative)
: Target(t)
, Offset(offset)
, Type(type)
, Addend(addend)
, IsFunctionRelative(isFunctionRelative)
, isResolved(false) { }
};
typedef SmallVector<RelocationEntry, 4> RelocationList;
StringMap<RelocationList> Relocations;
unsigned Arch;
void resolveRelocations();
void resolveX86_64Relocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveX86Relocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveArmRelocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
void resolveRelocation(StringRef Name,
uint8_t *Addr,
const RelocationEntry &RE);
public:
RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
bool loadObject(MemoryBuffer *InputBuffer);
void reassignSymbolAddress(StringRef Name, uint8_t *Addr);
void reassignSectionAddress(unsigned SectionID, uint64_t Addr);
bool isCompatibleFormat(const MemoryBuffer *InputBuffer) const;
};
} // end namespace llvm
#endif
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