HexagonGOTPLT.cpp revision 87f34658dec9097d987d254a990ea7f311bfc95f 
1//===- HexagonGOTPLT.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 "HexagonGOTPLT.h"
10#include "HexagonPLT.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// HexagonGOTPLT
22//===----------------------------------------------------------------------===//
23HexagonGOTPLT::HexagonGOTPLT(LDSection& pSection)
24  : HexagonGOT(pSection)
25{
26  // Skip GOT0 entries
27  for (size_t i = 0; i < HexagonGOTPLT0Num; ++i) {
28    create();
29  }
30  pSection.setAlign(8);
31}
32
33HexagonGOTPLT::~HexagonGOTPLT()
34{
35}
36
37// Check if we really have GOT PLT entries ?
38bool HexagonGOTPLT::hasGOT1() const
39{
40  return (m_SectionData->size() > HexagonGOTPLT0Num);
41}
42
43void HexagonGOTPLT::applyGOT0(uint64_t pAddress)
44{
45  llvm::cast<HexagonGOTEntry>
46    (*(m_SectionData->getFragmentList().begin())).setValue(pAddress);
47}
48
49void HexagonGOTPLT::applyAllGOTPLT(const HexagonPLT& pPLT)
50{
51  iterator it = begin();
52  // skip GOT0
53  for (size_t i = 0; i < HexagonGOTPLT0Num; ++i)
54    ++it;
55  // Set the initial value of the GOT entry to the address
56  // of PLT0, the stub calculates the index of the caller directly from
57  // the address where the call arised
58  for (; it != end() ; ++it) {
59    llvm::cast<HexagonGOTEntry>(*it).setValue(pPLT.addr());
60  }
61}
62
63}
64