1 //===- X86GOTPLT.cpp ------------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include "X86GOTPLT.h" 10 #include "X86PLT.h" 11 12 #include <llvm/Support/Casting.h> 13 14 #include <mcld/LD/LDSection.h> 15 #include <mcld/LD/LDFileFormat.h> 16 #include <mcld/Support/MsgHandling.h> 17 18 namespace mcld { 19 20 //===----------------------------------------------------------------------===// 21 // X86_32GOTPLT 22 //===----------------------------------------------------------------------===// 23 X86_32GOTPLT::X86_32GOTPLT(LDSection& pSection) 24 : X86_32GOT(pSection) 25 { 26 // Create GOT0 entries 27 reserve(X86GOTPLT0Num); 28 29 // Skip GOT0 entries 30 for (size_t i = 0; i < X86GOTPLT0Num; ++i) { 31 consume(); 32 } 33 } 34 35 X86_32GOTPLT::~X86_32GOTPLT() 36 { 37 } 38 39 bool X86_32GOTPLT::hasGOT1() const 40 { 41 return (m_SectionData->size() > X86GOTPLT0Num); 42 } 43 44 void X86_32GOTPLT::applyGOT0(uint64_t pAddress) 45 { 46 llvm::cast<X86_32GOTEntry> 47 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 48 } 49 50 void X86_32GOTPLT::applyAllGOTPLT(const X86PLT& pPLT) 51 { 52 iterator it = begin(); 53 // skip GOT0 54 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 55 ++it; 56 // address of corresponding plt entry 57 uint64_t plt_addr = pPLT.addr() + pPLT.getPLT0Size(); 58 for (; it != end() ; ++it) { 59 llvm::cast<X86_32GOTEntry>(*it).setValue(plt_addr + 6); 60 plt_addr += pPLT.getPLT1Size(); 61 } 62 } 63 64 //===----------------------------------------------------------------------===// 65 // X86_64GOTPLT 66 //===----------------------------------------------------------------------===// 67 X86_64GOTPLT::X86_64GOTPLT(LDSection& pSection) 68 : X86_64GOT(pSection) 69 { 70 // Create GOT0 entries 71 reserve(X86GOTPLT0Num); 72 73 // Skip GOT0 entries 74 for (size_t i = 0; i < X86GOTPLT0Num; ++i) { 75 consume(); 76 } 77 } 78 79 X86_64GOTPLT::~X86_64GOTPLT() 80 { 81 } 82 83 bool X86_64GOTPLT::hasGOT1() const 84 { 85 return (m_SectionData->size() > X86GOTPLT0Num); 86 } 87 88 void X86_64GOTPLT::applyGOT0(uint64_t pAddress) 89 { 90 llvm::cast<X86_64GOTEntry> 91 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 92 } 93 94 void X86_64GOTPLT::applyAllGOTPLT(const X86PLT& pPLT) 95 { 96 iterator it = begin(); 97 // skip GOT0 98 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 99 ++it; 100 // address of corresponding plt entry 101 uint64_t plt_addr = pPLT.addr() + pPLT.getPLT0Size(); 102 for (; it != end() ; ++it) { 103 llvm::cast<X86_64GOTEntry>(*it).setValue(plt_addr + 6); 104 plt_addr += pPLT.getPLT1Size(); 105 } 106 } 107 108 } //end mcld namespace 109
