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 18namespace mcld { 19 20//===----------------------------------------------------------------------===// 21// X86_32GOTPLT 22//===----------------------------------------------------------------------===// 23X86_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 35X86_32GOTPLT::~X86_32GOTPLT() 36{ 37} 38 39bool X86_32GOTPLT::hasGOT1() const 40{ 41 return (m_SectionData->size() > X86GOTPLT0Num); 42} 43 44void X86_32GOTPLT::applyGOT0(uint64_t pAddress) 45{ 46 llvm::cast<X86_32GOTEntry> 47 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 48} 49 50void 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//===----------------------------------------------------------------------===// 67X86_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 79X86_64GOTPLT::~X86_64GOTPLT() 80{ 81} 82 83bool X86_64GOTPLT::hasGOT1() const 84{ 85 return (m_SectionData->size() > X86GOTPLT0Num); 86} 87 88void X86_64GOTPLT::applyGOT0(uint64_t pAddress) 89{ 90 llvm::cast<X86_64GOTEntry> 91 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 92} 93 94void 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