LLVM 20.0.0git
Public Member Functions | Protected Types | Protected Attributes | List of all members
llvm::dwarf_linker::parallel::OutputSections Class Reference

This class keeps contents and offsets to the debug sections. More...

#include "DWARFLinker/Parallel/OutputSections.h"

Inheritance diagram for llvm::dwarf_linker::parallel::OutputSections:
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Public Member Functions

 OutputSections (LinkingGlobalData &GlobalData)
 
void setOutputFormat (dwarf::FormParams Format, llvm::endianness Endianness)
 Sets output format for all keeping sections.
 
const SectionDescriptor & getSectionDescriptor (DebugSectionKind SectionKind) const
 Returns descriptor for the specified section of SectionKind.
 
SectionDescriptor & getSectionDescriptor (DebugSectionKind SectionKind)
 Returns descriptor for the specified section of SectionKind.
 
std::optional< const SectionDescriptor * > tryGetSectionDescriptor (DebugSectionKind SectionKind) const
 Returns descriptor for the specified section of SectionKind.
 
std::optional< SectionDescriptor * > tryGetSectionDescriptor (DebugSectionKind SectionKind)
 Returns descriptor for the specified section of SectionKind.
 
SectionDescriptor & getOrCreateSectionDescriptor (DebugSectionKind SectionKind)
 Returns descriptor for the specified section of SectionKind.
 
void eraseSections ()
 Erases data of all sections.
 
void forEach (function_ref< void(SectionDescriptor &)> Handler)
 Enumerate all sections and call Handler for each.
 
void forEach (function_ref< void(std::shared_ptr< SectionDescriptor > Section)> Handler)
 Enumerate all sections and call Handler for each.
 
void assignSectionsOffsetAndAccumulateSize (std::array< uint64_t, SectionKindsNum > &SectionSizesAccumulator)
 Enumerate all sections, for each section set current offset (kept by SectionSizesAccumulator), update current offset with section length.
 
void applyPatches (SectionDescriptor &Section, StringEntryToDwarfStringPoolEntryMap &DebugStrStrings, StringEntryToDwarfStringPoolEntryMap &DebugLineStrStrings, TypeUnit *TypeUnitPtr)
 Enumerate all sections, for each section apply all section patches.
 
llvm::endianness getEndianness () const
 Endiannes for the sections.
 
uint16_t getVersion () const
 Return DWARF version.
 
uint16_t getDebugInfoHeaderSize () const
 Return size of header of debug_info table.
 
uint16_t getDebugAddrHeaderSize () const
 Return size of header of debug_ table.
 
uint16_t getDebugStrOffsetsHeaderSize () const
 Return size of header of debug_str_offsets table.
 
const dwarf::FormParams & getFormParams () const
 Return size of address.
 

Protected Types

using SectionsSetTy = std::map< DebugSectionKind, std::shared_ptr< SectionDescriptor > >
 All keeping sections.
 

Protected Attributes

LinkingGlobalData & GlobalData
 
dwarf::FormParams Format = {4, 4, dwarf::DWARF32}
 Format for sections.
 
llvm::endianness Endianness = llvm::endianness::native
 Endiannes for sections.
 
SectionsSetTy SectionDescriptors
 

Detailed Description

This class keeps contents and offsets to the debug sections.

Any objects which is supposed to be emitted into the debug sections should use this class to track debug sections offsets and keep sections data.

Definition at line 303 of file OutputSections.h.

Member Typedef Documentation

◆ SectionsSetTy

using llvm::dwarf_linker::parallel::OutputSections::SectionsSetTy = std::map<DebugSectionKind, std::shared_ptr<SectionDescriptor> >
protected

All keeping sections.

Definition at line 460 of file OutputSections.h.

Constructor & Destructor Documentation

◆ OutputSections()

llvm::dwarf_linker::parallel::OutputSections::OutputSections ( LinkingGlobalData &  GlobalData)
inline

Definition at line 305 of file OutputSections.h.

Member Function Documentation

◆ applyPatches()

void OutputSections::applyPatches ( SectionDescriptor &  Section,
StringEntryToDwarfStringPoolEntryMap &  DebugStrStrings,
StringEntryToDwarfStringPoolEntryMap &  DebugLineStrStrings,
TypeUnit *  TypeUnitPtr 
)

Enumerate all sections, for each section apply all section patches.

Definition at line 303 of file OutputSections.cpp.

References assert(), llvm::dwarf_linker::DebugLoc, llvm::dwarf_linker::DebugLocLists, llvm::dwarf_linker::DebugRange, llvm::dwarf_linker::DebugRngLists, Format, llvm::formatv(), llvm::dwarf::FormParams::getDwarfOffsetByteSize(), llvm::dwarf_linker::parallel::StringEntryToDwarfStringPoolEntryMap::getExistingEntry(), llvm::dwarf_linker::parallel::TypeEntryBody::getFinalDie(), llvm::DIE::getOffset(), llvm::getULEB128Size(), llvm::dwarf_linker::parallel::SectionPatch::PatchOffset, llvm::dwarf_linker::parallel::DebugStrPatch::String, tryGetSectionDescriptor(), and llvm::dwarf::FormParams::Version.

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::patchOffsetsAndSizes().

◆ assignSectionsOffsetAndAccumulateSize()

void llvm::dwarf_linker::parallel::OutputSections::assignSectionsOffsetAndAccumulateSize ( std::array< uint64_t, SectionKindsNum > &  SectionSizesAccumulator)
inline

Enumerate all sections, for each section set current offset (kept by SectionSizesAccumulator), update current offset with section length.

Definition at line 407 of file OutputSections.h.

References SectionDescriptors.

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::assignOffsetsToSections().

◆ eraseSections()

void llvm::dwarf_linker::parallel::OutputSections::eraseSections ( )
inline

Erases data of all sections.

Definition at line 384 of file OutputSections.h.

References SectionDescriptors.

Referenced by llvm::dwarf_linker::parallel::CompileUnit::maybeResetToLoadedStage().

◆ forEach() [1/2]

void llvm::dwarf_linker::parallel::OutputSections::forEach ( function_ref< void(SectionDescriptor &)>  Handler)
inline

Enumerate all sections and call Handler for each.

Definition at line 390 of file OutputSections.h.

References assert(), and SectionDescriptors.

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::patchOffsetsAndSizes(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::writeCommonSectionsToTheOutput(), and llvm::dwarf_linker::parallel::DWARFLinkerImpl::writeCompileUnitsToTheOutput().

◆ forEach() [2/2]

void llvm::dwarf_linker::parallel::OutputSections::forEach ( function_ref< void(std::shared_ptr< SectionDescriptor > Section)>  Handler)
inline

Enumerate all sections and call Handler for each.

Definition at line 398 of file OutputSections.h.

References SectionDescriptors.

◆ getDebugAddrHeaderSize()

uint16_t llvm::dwarf_linker::parallel::OutputSections::getDebugAddrHeaderSize ( ) const
inline

Return size of header of debug_ table.

Definition at line 436 of file OutputSections.h.

References assert(), llvm::dwarf::DWARF32, llvm::dwarf::FormParams::Format, Format, and llvm::dwarf::FormParams::Version.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr().

◆ getDebugInfoHeaderSize()

uint16_t llvm::dwarf_linker::parallel::OutputSections::getDebugInfoHeaderSize ( ) const
inline

Return size of header of debug_info table.

Definition at line 431 of file OutputSections.h.

References Format, and llvm::dwarf::FormParams::Version.

Referenced by llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmit(), llvm::dwarf_linker::parallel::TypeUnit::createDIETree(), and llvm::dwarf_linker::parallel::DwarfUnit::setOutUnitDIE().

◆ getDebugStrOffsetsHeaderSize()

uint16_t llvm::dwarf_linker::parallel::OutputSections::getDebugStrOffsetsHeaderSize ( ) const
inline

Return size of header of debug_str_offsets table.

Definition at line 442 of file OutputSections.h.

References assert(), llvm::dwarf::DWARF32, llvm::dwarf::FormParams::Format, Format, and llvm::dwarf::FormParams::Version.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::clone(), llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr(), and llvm::dwarf_linker::parallel::TypeUnit::createDIETree().

◆ getEndianness()

llvm::endianness llvm::dwarf_linker::parallel::OutputSections::getEndianness ( ) const
inline

Endiannes for the sections.

Definition at line 425 of file OutputSections.h.

References Endianness.

Referenced by llvm::dwarf_linker::parallel::CompileUnit::cloneDieAttrExpression(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::link(), and llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::loadClangModule().

◆ getFormParams()

const dwarf::FormParams & llvm::dwarf_linker::parallel::OutputSections::getFormParams ( ) const
inline

Return size of address.

Definition at line 448 of file OutputSections.h.

References Format.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::clone(), llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmitLineTable(), llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneBlockAttr(), llvm::dwarf_linker::parallel::CompileUnit::cloneDieAttrExpression(), and llvm::dwarf_linker::parallel::TypeUnit::TypeUnit().

◆ getOrCreateSectionDescriptor()

SectionDescriptor & llvm::dwarf_linker::parallel::OutputSections::getOrCreateSectionDescriptor ( DebugSectionKind  SectionKind)
inline

Returns descriptor for the specified section of SectionKind.

If descriptor does not exist then creates it.

Definition at line 373 of file OutputSections.h.

References Endianness, Format, GlobalData, and SectionDescriptors.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::clone(), llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmit(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::cloneAndEmitDebugFrame(), llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr(), llvm::dwarf_linker::parallel::CompileUnit::CompileUnit(), llvm::dwarf_linker::parallel::TypeUnit::createDIETree(), llvm::dwarf_linker::parallel::DebugLineSectionEmitter::emit(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::emitCommonSectionsAndWriteCompileUnitsToTheOutput(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::emitInvariantSections(), llvm::dwarf_linker::parallel::TypeUnit::finishCloningAndEmit(), and llvm::dwarf_linker::parallel::TypeUnit::TypeUnit().

◆ getSectionDescriptor() [1/2]

SectionDescriptor & llvm::dwarf_linker::parallel::OutputSections::getSectionDescriptor ( DebugSectionKind  SectionKind)
inline

Returns descriptor for the specified section of SectionKind.

The descriptor should already be created. The llvm_unreachable would be raised if it is not.

Definition at line 332 of file OutputSections.h.

References assert(), llvm::c_str(), llvm::formatv(), llvm::dwarf_linker::getSectionName(), llvm_unreachable, and SectionDescriptors.

◆ getSectionDescriptor() [2/2]

const SectionDescriptor & llvm::dwarf_linker::parallel::OutputSections::getSectionDescriptor ( DebugSectionKind  SectionKind) const
inline

Returns descriptor for the specified section of SectionKind.

The descriptor should already be created. The llvm_unreachable would be raised if it is not.

Definition at line 317 of file OutputSections.h.

References llvm::c_str(), llvm::formatv(), llvm::dwarf_linker::getSectionName(), llvm_unreachable, and SectionDescriptors.

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::emitStringSections().

◆ getVersion()

uint16_t llvm::dwarf_linker::parallel::OutputSections::getVersion ( ) const
inline

Return DWARF version.

Definition at line 428 of file OutputSections.h.

References Format, and llvm::dwarf::FormParams::Version.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::clone(), llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmitDebugLocations(), llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmitRanges(), llvm::dwarf_linker::parallel::DIEAttributeCloner::DIEAttributeCloner(), and llvm::dwarf_linker::parallel::CompileUnit::getDirAndFilenameFromLineTable().

◆ setOutputFormat()

void llvm::dwarf_linker::parallel::OutputSections::setOutputFormat ( dwarf::FormParams  Format,
llvm::endianness  Endianness 
)
inline

Sets output format for all keeping sections.

Definition at line 308 of file OutputSections.h.

References Endianness, and Format.

Referenced by llvm::dwarf_linker::parallel::CompileUnit::CompileUnit(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::link(), and llvm::dwarf_linker::parallel::TypeUnit::TypeUnit().

◆ tryGetSectionDescriptor() [1/2]

std::optional< SectionDescriptor * > llvm::dwarf_linker::parallel::OutputSections::tryGetSectionDescriptor ( DebugSectionKind  SectionKind)
inline

Returns descriptor for the specified section of SectionKind.

Returns std::nullopt if section descriptor is not created yet.

Definition at line 361 of file OutputSections.h.

References SectionDescriptors.

◆ tryGetSectionDescriptor() [2/2]

std::optional< const SectionDescriptor * > llvm::dwarf_linker::parallel::OutputSections::tryGetSectionDescriptor ( DebugSectionKind  SectionKind) const
inline

Returns descriptor for the specified section of SectionKind.

Returns std::nullopt if section descriptor is not created yet.

Definition at line 349 of file OutputSections.h.

References SectionDescriptors.

Referenced by applyPatches(), and llvm::dwarf_linker::parallel::CompileUnit::updateDieRefPatchesWithClonedOffsets().

Member Data Documentation

◆ Endianness

llvm::endianness llvm::dwarf_linker::parallel::OutputSections::Endianness = llvm::endianness::native
protected

Endiannes for sections.

Definition at line 457 of file OutputSections.h.

Referenced by getEndianness(), getOrCreateSectionDescriptor(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::LinkContext(), and setOutputFormat().

◆ Format

dwarf::FormParams llvm::dwarf_linker::parallel::OutputSections::Format = {4, 4, dwarf::DWARF32}
protected

Format for sections.

Definition at line 454 of file OutputSections.h.

Referenced by applyPatches(), llvm::dwarf_linker::parallel::CompileUnit::CompileUnit(), getDebugAddrHeaderSize(), getDebugInfoHeaderSize(), getDebugStrOffsetsHeaderSize(), getFormParams(), getOrCreateSectionDescriptor(), getVersion(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::LinkContext(), setOutputFormat(), and llvm::dwarf_linker::parallel::TypeUnit::TypeUnit().

◆ GlobalData

LinkingGlobalData& llvm::dwarf_linker::parallel::OutputSections::GlobalData
protected

Definition at line 451 of file OutputSections.h.

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::addObjectFile(), llvm::dwarf_linker::parallel::CompileUnit::analyzeImportedModule(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::cleanupDataAfterDWARFOutputIsWritten(), llvm::dwarf_linker::parallel::CompileUnit::cloneAndEmit(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::cloneAndEmitDebugFrame(), llvm::dwarf_linker::parallel::CompileUnit::CompileUnit(), llvm::dwarf_linker::parallel::TypeUnit::createDIETree(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::emitCommonSectionsAndWriteCompileUnitsToTheOutput(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::emitInvariantSections(), llvm::dwarf_linker::parallel::DwarfUnit::error(), llvm::dwarf_linker::parallel::CompileUnit::error(), llvm::dwarf_linker::parallel::TypeUnit::finishCloningAndEmit(), llvm::dwarf_linker::parallel::DwarfUnit::getGlobalData(), getOrCreateSectionDescriptor(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::glueCompileUnitsAndWriteToTheOutput(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::isClangModuleRef(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::link(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::link(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::linkSingleCompileUnit(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::loadClangModule(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::LinkContext::registerModuleReference(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::validateAndUpdateOptions(), llvm::dwarf_linker::parallel::DWARFLinkerImpl::verifyInput(), llvm::dwarf_linker::parallel::DwarfUnit::warn(), and llvm::dwarf_linker::parallel::CompileUnit::warn().

◆ SectionDescriptors

SectionsSetTy llvm::dwarf_linker::parallel::OutputSections::SectionDescriptors
protected

Definition at line 462 of file OutputSections.h.

Referenced by assignSectionsOffsetAndAccumulateSize(), eraseSections(), forEach(), getOrCreateSectionDescriptor(), getSectionDescriptor(), and tryGetSectionDescriptor().

The documentation for this class was generated from the following files:
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