You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.0 KiB
85 lines
2.0 KiB
//===- ARMGOT.h -----------------------------------------------------------===//
|
|
//
|
|
// The MCLinker Project
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef TARGET_ARM_ARMGOT_H_
|
|
#define TARGET_ARM_ARMGOT_H_
|
|
|
|
#include "mcld/Support/MemoryRegion.h"
|
|
#include "mcld/Target/GOT.h"
|
|
#include <llvm/ADT/DenseMap.h>
|
|
#include <vector>
|
|
|
|
namespace mcld {
|
|
|
|
class LDSection;
|
|
|
|
/** \class ARMGOTEntry
|
|
* \brief GOT Entry with size of 4 bytes
|
|
*/
|
|
class ARMGOTEntry : public GOT::Entry<4> {
|
|
public:
|
|
ARMGOTEntry(uint64_t pContent, SectionData* pParent)
|
|
: GOT::Entry<4>(pContent, pParent) {}
|
|
};
|
|
|
|
/** \class ARMGOT
|
|
* \brief ARM Global Offset Table.
|
|
*
|
|
* ARM GOT integrates traditional .got.plt and .got sections into one.
|
|
* Traditional .got.plt is placed in the front part of GOT (PLTGOT), and
|
|
* traditional .got is placed in the rear part of GOT (GOT).
|
|
*
|
|
* ARM .got
|
|
* +--------------+
|
|
* | GOT0 |
|
|
* +--------------+
|
|
* | GOTPLT |
|
|
* +--------------+
|
|
* | GOT |
|
|
* +--------------+
|
|
*
|
|
*/
|
|
class ARMGOT : public GOT {
|
|
public:
|
|
explicit ARMGOT(LDSection& pSection);
|
|
|
|
~ARMGOT();
|
|
|
|
ARMGOTEntry* createGOT();
|
|
ARMGOTEntry* createGOTPLT();
|
|
|
|
void finalizeSectionSize();
|
|
|
|
uint64_t emit(MemoryRegion& pRegion);
|
|
|
|
void applyGOT0(uint64_t pAddress);
|
|
|
|
void applyGOTPLT(uint64_t pPLTBase);
|
|
|
|
bool hasGOT1() const;
|
|
|
|
private:
|
|
typedef std::vector<ARMGOTEntry*> EntryListType;
|
|
typedef EntryListType::iterator entry_iterator;
|
|
typedef EntryListType::const_iterator const_entry_iterator;
|
|
|
|
private:
|
|
ARMGOTEntry* m_pGOTPLTFront;
|
|
ARMGOTEntry* m_pGOTFront;
|
|
|
|
/// m_GOTPLTEntries - a list of gotplt entries
|
|
EntryListType m_GOTPLT;
|
|
|
|
/// m_GOTEntris - a list of got entries
|
|
EntryListType m_GOT;
|
|
};
|
|
|
|
} // namespace mcld
|
|
|
|
#endif // TARGET_ARM_ARMGOT_H_
|