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64 lines
1.8 KiB
64 lines
1.8 KiB
4 months ago
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//===- MipsGOTPLT.cpp -----------------------------------------------------===//
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//
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// The MCLinker Project
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsGOTPLT.h"
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#include <llvm/Support/Casting.h>
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namespace {
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typedef mcld::GOT::Entry<4> GOTPLTEntry;
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const size_t MipsGOTPLT0Num = 2;
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}
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namespace mcld {
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//===----------------------------------------------------------------------===//
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// MipsGOTPLT
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//===----------------------------------------------------------------------===//
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MipsGOTPLT::MipsGOTPLT(LDSection& pSection) : GOT(pSection) {
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// Create header's entries.
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new GOTPLTEntry(0, m_SectionData);
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new GOTPLTEntry(0, m_SectionData);
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}
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uint64_t MipsGOTPLT::emit(MemoryRegion& pRegion) {
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uint32_t* buffer = reinterpret_cast<uint32_t*>(pRegion.begin());
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uint64_t result = 0;
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for (iterator it = begin(), ie = end(); it != ie; ++it, ++buffer) {
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GOTPLTEntry* got = &(llvm::cast<GOTPLTEntry>((*it)));
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*buffer = static_cast<uint32_t>(got->getValue());
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result += got->size();
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}
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return result;
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}
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Fragment* MipsGOTPLT::create() {
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return new GOTPLTEntry(0, m_SectionData);
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}
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bool MipsGOTPLT::hasGOT1() const {
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return m_SectionData->size() > MipsGOTPLT0Num;
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}
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uint64_t MipsGOTPLT::getEntryAddr(size_t num) const {
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return addr() + (MipsGOTPLT0Num + num) * GOTPLTEntry::EntrySize;
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}
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void MipsGOTPLT::applyAllGOTPLT(uint64_t pltAddr) {
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iterator it = begin();
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llvm::cast<GOTPLTEntry>(*it++).setValue(0); // PLT lazy resolver
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llvm::cast<GOTPLTEntry>(*it++).setValue(0); // Module pointer
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for (; it != end(); ++it)
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llvm::cast<GOTPLTEntry>(*it).setValue(pltAddr);
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}
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} // namespace mcld
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