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 "mcld/LD/LDSection.h"
13 #include "mcld/LD/LDFileFormat.h"
14 #include "mcld/Support/MsgHandling.h"
15 
16 #include <llvm/Support/Casting.h>
17 
18 namespace mcld {
19 
20 //===----------------------------------------------------------------------===//
21 // HexagonGOTPLT
22 //===----------------------------------------------------------------------===//
HexagonGOTPLT(LDSection & pSection)23 HexagonGOTPLT::HexagonGOTPLT(LDSection& pSection) : HexagonGOT(pSection) {
24   // Skip GOT0 entries
25   for (size_t i = 0; i < HexagonGOTPLT0Num; ++i) {
26     create();
27   }
28   pSection.setAlign(8);
29 }
30 
~HexagonGOTPLT()31 HexagonGOTPLT::~HexagonGOTPLT() {
32 }
33 
34 // Check if we really have GOT PLT entries ?
hasGOT1() const35 bool HexagonGOTPLT::hasGOT1() const {
36   return (m_SectionData->size() > HexagonGOTPLT0Num);
37 }
38 
applyGOT0(uint64_t pAddress)39 void HexagonGOTPLT::applyGOT0(uint64_t pAddress) {
40   llvm::cast<HexagonGOTEntry>(*(m_SectionData->getFragmentList().begin()))
41       .setValue(pAddress);
42 }
43 
applyAllGOTPLT(const HexagonPLT & pPLT)44 void HexagonGOTPLT::applyAllGOTPLT(const HexagonPLT& pPLT) {
45   iterator it = begin();
46   // skip GOT0
47   for (size_t i = 0; i < HexagonGOTPLT0Num; ++i)
48     ++it;
49   // Set the initial value of the GOT entry to the address
50   // of PLT0, the stub calculates the index of the caller directly from
51   // the address where the call arised
52   for (; it != end(); ++it) {
53     llvm::cast<HexagonGOTEntry>(*it).setValue(pPLT.addr());
54   }
55 }
56 
57 }  // namespace mcld
58