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86 lines
2.1 KiB
86 lines
2.1 KiB
//===- PLT.h --------------------------------------------------------------===//
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//
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// The MCLinker Project
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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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#ifndef MCLD_TARGET_PLT_H_
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#define MCLD_TARGET_PLT_H_
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#include "mcld/Fragment/TargetFragment.h"
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#include "mcld/LD/LDSection.h"
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#include "mcld/LD/SectionData.h"
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namespace mcld {
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class LDSection;
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class ResolveInfo;
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/** \class PLTEntryDefaultBase
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* \brief PLTEntryDefaultBase provides the default interface for PLT Entry
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*/
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class PLTEntryBase : public TargetFragment {
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public:
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explicit PLTEntryBase(SectionData& pParent)
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: TargetFragment(Fragment::Target, &pParent), m_pValue(NULL) {}
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virtual ~PLTEntryBase() { free(m_pValue); }
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void setValue(unsigned char* pValue) { m_pValue = pValue; }
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const unsigned char* getValue() const { return m_pValue; }
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// Used by llvm::cast<>.
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static bool classof(const Fragment* O) { return true; }
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protected:
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unsigned char* m_pValue;
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};
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/** \class PLT
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* \brief Procedure linkage table
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*/
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class PLT {
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public:
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typedef SectionData::iterator iterator;
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typedef SectionData::const_iterator const_iterator;
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template <size_t SIZE, typename EntryBase = PLTEntryBase>
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class Entry : public EntryBase {
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public:
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enum { EntrySize = SIZE };
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public:
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explicit Entry(SectionData& pParent) : EntryBase(pParent) {}
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virtual ~Entry() {}
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size_t size() const { return EntrySize; }
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};
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public:
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explicit PLT(LDSection& pSection);
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virtual ~PLT();
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// finalizeSectionSize - set LDSection size
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virtual void finalizeSectionSize() = 0;
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uint64_t addr() const { return m_Section.addr(); }
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const_iterator begin() const { return m_pSectionData->begin(); }
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iterator begin() { return m_pSectionData->begin(); }
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const_iterator end() const { return m_pSectionData->end(); }
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iterator end() { return m_pSectionData->end(); }
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protected:
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LDSection& m_Section;
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SectionData* m_pSectionData;
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};
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} // namespace mcld
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#endif // MCLD_TARGET_PLT_H_
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