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 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 28 create(); 29 } 30 31 X86_32GOTPLT::~X86_32GOTPLT() 32 { 33 } 34 35 bool X86_32GOTPLT::hasGOT1() const 36 { 37 return (m_SectionData->size() > X86GOTPLT0Num); 38 } 39 40 void X86_32GOTPLT::applyGOT0(uint64_t pAddress) 41 { 42 llvm::cast<X86_32GOTEntry> 43 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 44 } 45 46 void X86_32GOTPLT::applyAllGOTPLT(const X86PLT& pPLT) 47 { 48 iterator it = begin(); 49 // skip GOT0 50 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 51 ++it; 52 // address of corresponding plt entry 53 uint64_t plt_addr = pPLT.addr() + pPLT.getPLT0Size(); 54 for (; it != end() ; ++it) { 55 llvm::cast<X86_32GOTEntry>(*it).setValue(plt_addr + 6); 56 plt_addr += pPLT.getPLT1Size(); 57 } 58 } 59 60 //===----------------------------------------------------------------------===// 61 // X86_64GOTPLT 62 //===----------------------------------------------------------------------===// 63 X86_64GOTPLT::X86_64GOTPLT(LDSection& pSection) 64 : X86_64GOT(pSection) 65 { 66 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 67 create(); 68 } 69 70 X86_64GOTPLT::~X86_64GOTPLT() 71 { 72 } 73 74 bool X86_64GOTPLT::hasGOT1() const 75 { 76 return (m_SectionData->size() > X86GOTPLT0Num); 77 } 78 79 void X86_64GOTPLT::applyGOT0(uint64_t pAddress) 80 { 81 llvm::cast<X86_64GOTEntry> 82 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 83 } 84 85 void X86_64GOTPLT::applyAllGOTPLT(const X86PLT& pPLT) 86 { 87 iterator it = begin(); 88 // skip GOT0 89 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 90 ++it; 91 // address of corresponding plt entry 92 uint64_t plt_addr = pPLT.addr() + pPLT.getPLT0Size(); 93 for (; it != end() ; ++it) { 94 llvm::cast<X86_64GOTEntry>(*it).setValue(plt_addr + 6); 95 plt_addr += pPLT.getPLT1Size(); 96 } 97 } 98 99 } //end mcld namespace 100
