X86GOTPLT.cpp revision 22add6ff3426df1a85089fe6a6e1597ee3b6f300 
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 <new>
13
14#include <llvm/Support/Casting.h>
15
16#include <mcld/LD/LDSection.h>
17#include <mcld/LD/LDFileFormat.h>
18#include <mcld/Support/MsgHandling.h>
19
20namespace {
21  const uint64_t X86GOTPLTEntrySize = 4;
22}
23
24namespace mcld {
25
26//===----------------------------------------------------------------------===//
27// X86GOTPLT
28//===----------------------------------------------------------------------===//
29X86GOTPLT::X86GOTPLT(LDSection& pSection)
30  : GOT(pSection, X86GOTPLTEntrySize)
31{
32  // Create GOT0 entries
33  reserve(X86GOTPLT0Num);
34
35  // Skip GOT0 entries
36  for (size_t i = 0; i < X86GOTPLT0Num; ++i) {
37    consume();
38  }
39}
40
41X86GOTPLT::~X86GOTPLT()
42{
43}
44
45bool X86GOTPLT::hasGOT1() const
46{
47  return (m_SectionData->size() > X86GOTPLT0Num);
48}
49
50void X86GOTPLT::applyGOT0(uint64_t pAddress)
51{
52  llvm::cast<Entry>
53    (*(m_SectionData->getFragmentList().begin())).setContent(pAddress);
54}
55
56void X86GOTPLT::applyAllGOTPLT(const X86PLT& pPLT)
57{
58  iterator it = begin();
59  // skip GOT0
60  for (size_t i = 0; i < X86GOTPLT0Num; ++i)
61    ++it;
62  // address of corresponding plt entry
63  uint64_t plt_addr = pPLT.addr() + pPLT.getPLT0Size();
64  for (; it != end() ; ++it) {
65    llvm::cast<Entry>(*it).setContent(plt_addr + 6);
66    plt_addr += pPLT.getPLT1Size();
67  }
68}
69
70} //end mcld namespace
71