7c83d66719
These are identified by misc-include-cleaner. I've filtered out those that break builds. Also, I'm staying away from llvm-config.h, config.h, and Compiler.h, which likely cause platform- or compiler-specific build failures.
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
//===- lib/MC/MCSection.cpp - Machine Code Section Representation ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCSection.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include <utility>
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using namespace llvm;
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MCSection::MCSection(SectionVariant V, StringRef Name, bool IsText,
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bool IsVirtual, MCSymbol *Begin)
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: Begin(Begin), BundleGroupBeforeFirstInst(false), HasInstructions(false),
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IsRegistered(false), IsText(IsText), IsVirtual(IsVirtual),
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LinkerRelaxable(false), Name(Name), Variant(V) {
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// The initial subsection number is 0. Create a fragment list.
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CurFragList = &Subsections.emplace_back(0u, FragList{}).second;
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}
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MCSymbol *MCSection::getEndSymbol(MCContext &Ctx) {
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if (!End)
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End = Ctx.createTempSymbol("sec_end");
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return End;
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}
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bool MCSection::hasEnded() const { return End && End->isInSection(); }
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void MCSection::setBundleLockState(BundleLockStateType NewState) {
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if (NewState == NotBundleLocked) {
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if (BundleLockNestingDepth == 0) {
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report_fatal_error("Mismatched bundle_lock/unlock directives");
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}
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if (--BundleLockNestingDepth == 0) {
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BundleLockState = NotBundleLocked;
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}
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return;
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}
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// If any of the directives is an align_to_end directive, the whole nested
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// group is align_to_end. So don't downgrade from align_to_end to just locked.
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if (BundleLockState != BundleLockedAlignToEnd) {
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BundleLockState = NewState;
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}
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++BundleLockNestingDepth;
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}
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StringRef MCSection::getVirtualSectionKind() const { return "virtual"; }
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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LLVM_DUMP_METHOD void MCSection::dump(
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DenseMap<const MCFragment *, SmallVector<const MCSymbol *, 0>> *FragToSyms)
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const {
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raw_ostream &OS = errs();
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OS << "MCSection Name:" << getName();
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for (auto &F : *this) {
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OS << '\n';
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F.dump();
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if (!FragToSyms)
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continue;
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auto It = FragToSyms->find(&F);
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if (It == FragToSyms->end())
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continue;
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for (auto *Sym : It->second) {
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OS << "\n Symbol @" << Sym->getOffset() << ' ' << Sym->getName();
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if (Sym->isTemporary())
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OS << " Temporary";
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}
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}
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}
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#endif
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void MCEncodedFragment::setContents(ArrayRef<char> Contents) {
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auto &S = getParent()->ContentStorage;
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if (ContentStart + Contents.size() > ContentEnd) {
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ContentStart = S.size();
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S.resize_for_overwrite(S.size() + Contents.size());
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}
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ContentEnd = ContentStart + Contents.size();
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llvm::copy(Contents, S.begin() + ContentStart);
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}
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void MCEncodedFragment::addFixup(MCFixup Fixup) { appendFixups({Fixup}); }
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void MCEncodedFragment::appendFixups(ArrayRef<MCFixup> Fixups) {
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auto &S = getParent()->FixupStorage;
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if (LLVM_UNLIKELY(FixupEnd != S.size())) {
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// Move the elements to the end. Reserve space to avoid invalidating
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// S.begin()+I for `append`.
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auto Size = FixupEnd - FixupStart;
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auto I = std::exchange(FixupStart, S.size());
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S.reserve(S.size() + Size);
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S.append(S.begin() + I, S.begin() + I + Size);
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}
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S.append(Fixups.begin(), Fixups.end());
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FixupEnd = S.size();
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}
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void MCEncodedFragment::setFixups(ArrayRef<MCFixup> Fixups) {
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auto &S = getParent()->FixupStorage;
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if (FixupStart + Fixups.size() > FixupEnd) {
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FixupStart = S.size();
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S.resize_for_overwrite(S.size() + Fixups.size());
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}
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FixupEnd = FixupStart + Fixups.size();
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llvm::copy(Fixups, S.begin() + FixupStart);
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}
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