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85 lines
2.6 KiB
85 lines
2.6 KiB
//===- AArch64CA53Erratum843419Stub2.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 "AArch64CA53Erratum843419Stub.h"
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#include "AArch64CA53Erratum843419Stub2.h"
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#include "AArch64InsnHelpers.h"
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#include "mcld/Fragment/FragmentRef.h"
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#include "mcld/Fragment/Relocation.h"
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#include "mcld/IRBuilder.h"
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#include "mcld/LD/BranchIsland.h"
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#include "mcld/LD/LDSection.h"
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#include "mcld/LD/LDSymbol.h"
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#include "mcld/LD/ResolveInfo.h"
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#include "mcld/LD/SectionData.h"
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#include <llvm/ADT/StringExtras.h>
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#include <llvm/Support/ELF.h>
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#include <cassert>
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namespace mcld {
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//===----------------------------------------------------------------------===//
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// AArch64CA53Erratum843419Stub2
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//===----------------------------------------------------------------------===//
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AArch64CA53Erratum843419Stub2::AArch64CA53Erratum843419Stub2() {
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}
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/// for doClone
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AArch64CA53Erratum843419Stub2::AArch64CA53Erratum843419Stub2(
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const uint32_t* pData,
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size_t pSize,
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const char* pName,
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const_fixup_iterator pBegin,
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const_fixup_iterator pEnd)
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: AArch64CA53ErratumStub(pData, pSize, pName, pBegin, pEnd) {
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}
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AArch64CA53Erratum843419Stub2::~AArch64CA53Erratum843419Stub2() {
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}
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bool AArch64CA53Erratum843419Stub2::isMyDuty(
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const FragmentRef& pFragRef) const {
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if ((pFragRef.offset() + AArch64InsnHelpers::InsnSize * 4) >
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pFragRef.frag()->size()) {
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return false;
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}
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// The first instruction must be ending at 0xFF8 or 0xFFC.
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const uint64_t vma = pFragRef.frag()->getParent()->getSection().addr() +
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pFragRef.getOutputOffset();
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const unsigned page_offset = (vma & 0xFFF);
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if ((page_offset != 0xFF8) && (page_offset != 0xFFC)) {
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return false;
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}
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ErratumSequence code;
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pFragRef.memcpy(&code, AArch64InsnHelpers::InsnSize * 4, 0);
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if (AArch64CA53Erratum843419Stub::isErratum843419Sequence(code.insns[0],
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code.insns[1],
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code.insns[3])) {
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return true;
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}
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return false;
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}
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Stub* AArch64CA53Erratum843419Stub2::doClone() {
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return new AArch64CA53Erratum843419Stub2(getData(),
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size(),
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"erratum_843419_veneer",
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fixup_begin(),
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fixup_end());
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}
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} // namespace mcld
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