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75 lines
1.6 KiB
75 lines
1.6 KiB
4 months ago
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//===- ARMPLT.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 TARGET_ARM_ARMPLT_H_
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#define TARGET_ARM_ARMPLT_H_
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#include "mcld/Target/GOT.h"
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#include "mcld/Target/PLT.h"
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#include "mcld/Support/MemoryRegion.h"
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const uint32_t arm_plt0[] = {
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0xe52de004, // str lr, [sp, #-4]!
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0xe59fe004, // ldr lr, [pc, #4]
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0xe08fe00e, // add lr, pc, lr
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0xe5bef008, // ldr pc, [lr, #8]!
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0x00000000 // &GOT[0] - .
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};
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const uint32_t arm_plt1[] = {
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0xe28fc600, // add ip, pc, #0xNN00000
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0xe28cca00, // add ip, ip, #0xNN000
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0xe5bcf000 // ldr pc, [ip, #0xNNN]!
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};
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namespace mcld {
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class ARMGOT;
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class ARMPLT0 : public PLT::Entry<sizeof(arm_plt0)> {
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public:
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ARMPLT0(SectionData& pParent);
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};
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class ARMPLT1 : public PLT::Entry<sizeof(arm_plt1)> {
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public:
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ARMPLT1(SectionData& pParent);
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};
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/** \class ARMPLT
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* \brief ARM Procedure Linkage Table
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*/
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class ARMPLT : public PLT {
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public:
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ARMPLT(LDSection& pSection, ARMGOT& pGOTPLT);
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~ARMPLT();
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// finalizeSectionSize - set LDSection size
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void finalizeSectionSize();
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// hasPLT1 - return if this plt section has any plt1 entry
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bool hasPLT1() const;
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ARMPLT1* create();
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ARMPLT0* getPLT0() const;
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void applyPLT0();
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void applyPLT1();
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uint64_t emit(MemoryRegion& pRegion);
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private:
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ARMGOT& m_GOT;
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};
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} // namespace mcld
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#endif // TARGET_ARM_ARMPLT_H_
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