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 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 28 create(); 29} 30 31X86_32GOTPLT::~X86_32GOTPLT() 32{ 33} 34 35bool X86_32GOTPLT::hasGOT1() const 36{ 37 return (m_SectionData->size() > X86GOTPLT0Num); 38} 39 40void X86_32GOTPLT::applyGOT0(uint64_t pAddress) 41{ 42 llvm::cast<X86_32GOTEntry> 43 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 44} 45 46void 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//===----------------------------------------------------------------------===// 63X86_64GOTPLT::X86_64GOTPLT(LDSection& pSection) 64 : X86_64GOT(pSection) 65{ 66 for (size_t i = 0; i < X86GOTPLT0Num; ++i) 67 create(); 68} 69 70X86_64GOTPLT::~X86_64GOTPLT() 71{ 72} 73 74bool X86_64GOTPLT::hasGOT1() const 75{ 76 return (m_SectionData->size() > X86GOTPLT0Num); 77} 78 79void X86_64GOTPLT::applyGOT0(uint64_t pAddress) 80{ 81 llvm::cast<X86_64GOTEntry> 82 (*(m_SectionData->getFragmentList().begin())).setValue(pAddress); 83} 84 85void 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