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📁 ..
📄 ConstantPools.h(3.35 KB)
📄 LaneBitmask.h(3.24 KB)
📄 MCAsmBackend.h(8.09 KB)
📄 MCAsmInfo.h(25.48 KB)
📄 MCAsmInfoCOFF.h(900 B)
📄 MCAsmInfoDarwin.h(927 B)
📄 MCAsmInfoELF.h(711 B)
📄 MCAsmInfoWasm.h(612 B)
📄 MCAsmInfoXCOFF.h(792 B)
📄 MCAsmLayout.h(3.75 KB)
📄 MCAsmMacro.h(4.54 KB)
📄 MCAssembler.h(16.1 KB)
📄 MCCodeEmitter.h(1.53 KB)
📄 MCCodeView.h(9.03 KB)
📄 MCContext.h(31.99 KB)
📄 MCDirectives.h(3.12 KB)
📁 MCDisassembler
📄 MCDwarf.h(21.46 KB)
📄 MCELFObjectWriter.h(5.27 KB)
📄 MCELFStreamer.h(3.97 KB)
📄 MCExpr.h(21.55 KB)
📄 MCFixedLenDisassembler.h(1.39 KB)
📄 MCFixup.h(7.4 KB)
📄 MCFixupKindInfo.h(1.6 KB)
📄 MCFragment.h(17.72 KB)
📄 MCInst.h(6.06 KB)
📄 MCInstBuilder.h(1.76 KB)
📄 MCInstPrinter.h(5.88 KB)
📄 MCInstrAnalysis.h(6.8 KB)
📄 MCInstrDesc.h(25.13 KB)
📄 MCInstrInfo.h(2.93 KB)
📄 MCInstrItineraries.h(9.02 KB)
📄 MCLabel.h(1.63 KB)
📄 MCLinkerOptimizationHint.h(5.73 KB)
📄 MCMachObjectWriter.h(9.77 KB)
📄 MCObjectFileInfo.h(16.57 KB)
📄 MCObjectStreamer.h(8.78 KB)
📄 MCObjectWriter.h(4.44 KB)
📁 MCParser
📄 MCRegister.h(4.16 KB)
📄 MCRegisterInfo.h(28.96 KB)
📄 MCSchedule.h(16.25 KB)
📄 MCSection.h(6.52 KB)
📄 MCSectionCOFF.h(3.37 KB)
📄 MCSectionELF.h(3.3 KB)
📄 MCSectionMachO.h(3.15 KB)
📄 MCSectionWasm.h(2.78 KB)
📄 MCSectionXCOFF.h(3.22 KB)
📄 MCStreamer.h(43.55 KB)
📄 MCSubtargetInfo.h(10.04 KB)
📄 MCSymbol.h(13.8 KB)
📄 MCSymbolCOFF.h(1.62 KB)
📄 MCSymbolELF.h(1.45 KB)
📄 MCSymbolMachO.h(4.18 KB)
📄 MCSymbolWasm.h(4.28 KB)
📄 MCSymbolXCOFF.h(2.39 KB)
📄 MCTargetOptions.h(2.29 KB)
📄 MCTargetOptionsCommandFlags.h(1.26 KB)
📄 MCValue.h(2.42 KB)
📄 MCWasmObjectWriter.h(1.61 KB)
📄 MCWasmStreamer.h(2.83 KB)
📄 MCWin64EH.h(2.41 KB)
📄 MCWinCOFFObjectWriter.h(1.81 KB)
📄 MCWinCOFFStreamer.h(3.05 KB)
📄 MCWinEH.h(1.97 KB)
📄 MCXCOFFObjectWriter.h(1.45 KB)
📄 MCXCOFFStreamer.h(1.86 KB)
📄 MachineLocation.h(2.04 KB)
📄 SectionKind.h(7.53 KB)
📄 StringTableBuilder.h(2.47 KB)
📄 SubtargetFeature.h(7.12 KB)

Editing: MCAsmLayout.h

//===- MCAsmLayout.h - Assembly Layout Object -------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_MC_MCASMLAYOUT_H
#define LLVM_MC_MCASMLAYOUT_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"

namespace llvm {
class MCAssembler;
class MCFragment;
class MCSection;
class MCSymbol;

/// Encapsulates the layout of an assembly file at a particular point in time.
///
/// Assembly may require computing multiple layouts for a particular assembly
/// file as part of the relaxation process. This class encapsulates the layout
/// at a single point in time in such a way that it is always possible to
/// efficiently compute the exact address of any symbol in the assembly file,
/// even during the relaxation process.
class MCAsmLayout {
  MCAssembler &Assembler;

/// List of sections in layout order.
  llvm::SmallVector<MCSection *, 16> SectionOrder;

/// The last fragment which was laid out, or 0 if nothing has been laid
  /// out. Fragments are always laid out in order, so all fragments with a
  /// lower ordinal will be valid.
  mutable DenseMap<const MCSection *, MCFragment *> LastValidFragment;

/// Make sure that the layout for the given fragment is valid, lazily
  /// computing it if necessary.
  void ensureValid(const MCFragment *F) const;

/// Is the layout for this fragment valid?
  bool isFragmentValid(const MCFragment *F) const;

public:
  MCAsmLayout(MCAssembler &Assembler);

/// Get the assembler object this is a layout for.
  MCAssembler &getAssembler() const { return Assembler; }

/// \returns whether the offset of fragment \p F can be obtained via
  /// getFragmentOffset.
  bool canGetFragmentOffset(const MCFragment *F) const;

/// Invalidate the fragments starting with F because it has been
  /// resized. The fragment's size should have already been updated, but
  /// its bundle padding will be recomputed.
  void invalidateFragmentsFrom(MCFragment *F);

/// Perform layout for a single fragment, assuming that the previous
  /// fragment has already been laid out correctly, and the parent section has
  /// been initialized.
  void layoutFragment(MCFragment *Fragment);

/// \name Section Access (in layout order)
  /// @{

llvm::SmallVectorImpl<MCSection *> &getSectionOrder() { return SectionOrder; }
  const llvm::SmallVectorImpl<MCSection *> &getSectionOrder() const {
    return SectionOrder;
  }

/// @}
  /// \name Fragment Layout Data
  /// @{

/// Get the offset of the given fragment inside its containing section.
  uint64_t getFragmentOffset(const MCFragment *F) const;

/// @}
  /// \name Utility Functions
  /// @{

/// Get the address space size of the given section, as it effects
  /// layout. This may differ from the size reported by \see getSectionSize() by
  /// not including section tail padding.
  uint64_t getSectionAddressSize(const MCSection *Sec) const;

/// Get the data size of the given section, as emitted to the object
  /// file. This may include additional padding, or be 0 for virtual sections.
  uint64_t getSectionFileSize(const MCSection *Sec) const;

/// Get the offset of the given symbol, as computed in the current
  /// layout.
  /// \return True on success.
  bool getSymbolOffset(const MCSymbol &S, uint64_t &Val) const;

/// Variant that reports a fatal error if the offset is not computable.
  uint64_t getSymbolOffset(const MCSymbol &S) const;

/// If this symbol is equivalent to A + Constant, return A.
  const MCSymbol *getBaseSymbol(const MCSymbol &Symbol) const;

/// @}
};

} // end namespace llvm

#endif

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