llvm::DWPWriter Class Reference

Direct ELF writer for DWP output. More...

#include "llvm/DWP/DWP.h"

Public Member Functions
	DWPWriter ()=default
void	setMachine (uint16_t Machine)
void	setOSABI (uint8_t OSABI)
void	setIsWASM (bool V)
SmallVectorImpl< char > &	getSectionBuffer (DWPSectionId Id)
void	switchSection (DWPSectionId Id)
void	emitBytes (StringRef Data)
	Zero-copy: stores a reference to the input data without copying.
void	emitIntValue (uint64_t Value, unsigned Size)
Error	writeELF (raw_pwrite_stream &OS)
Error	writeWASM (raw_pwrite_stream &OS)
Error	write (raw_pwrite_stream &OS)

Detailed Description

Direct ELF writer for DWP output.

Section data is stored as zero-copy StringRef chunks pointing to the mmap'd input files, plus an inline buffer for constructed data (emitIntValue). This avoids copying gigabytes of debug section data through the MC infrastructure (MCContext, MCAssembler, MCDataFragment allocation, layout, etc.).

Definition at line 59 of file DWP.h.

Constructor & Destructor Documentation

DWPWriter()

llvm::DWPWriter::DWPWriter ( )

default

Member Function Documentation

emitBytes()

void llvm::DWPWriter::emitBytes ( StringRef Data )

inline

Zero-copy: stores a reference to the input data without copying.

Flushes any pending inline data first to preserve output order.

Definition at line 121 of file DWP.h.

References llvm::Data.

Referenced by addAllTypesFromDWP(), addAllTypesFromTypesSection(), llvm::handleSection(), llvm::write(), and llvm::writeStringsAndOffsets().

emitIntValue()

void llvm::DWPWriter::emitIntValue ( uint64_t Value, unsigned Size )

inline

Definition at line 129 of file DWP.h.

References I, and Size.

Referenced by llvm::writeIndex(), llvm::writeIndexTable(), writeNewOffsetsTo(), and llvm::writeStringsAndOffsets().

getSectionBuffer()

SmallVectorImpl< char > & llvm::DWPWriter::getSectionBuffer ( DWPSectionId Id )

inline

Definition at line 113 of file DWP.h.

setIsWASM()

void llvm::DWPWriter::setIsWASM ( bool V )

inline

Definition at line 111 of file DWP.h.

Referenced by llvm::write().

setMachine()

void llvm::DWPWriter::setMachine ( uint16_t Machine )

inline

Definition at line 109 of file DWP.h.

References Machine.

Referenced by llvm::write().

setOSABI()

void llvm::DWPWriter::setOSABI ( uint8_t OSABI )

inline

Definition at line 110 of file DWP.h.

Referenced by llvm::write().

switchSection()

void llvm::DWPWriter::switchSection ( DWPSectionId Id )

inline

Definition at line 117 of file DWP.h.

Referenced by addAllTypesFromDWP(), addAllTypesFromTypesSection(), llvm::handleSection(), llvm::write(), llvm::writeIndex(), and llvm::writeStringsAndOffsets().

write()

Error llvm::DWPWriter::write ( raw_pwrite_stream & OS )

inline

Definition at line 139 of file DWP.h.

References writeELF(), and writeWASM().

Referenced by llvm::write().

writeELF()

Error llvm::DWPWriter::writeELF

(

raw_pwrite_stream &

OS

)

Definition at line 1047 of file DWP.cpp.

References llvm::alignTo(), llvm::SmallString< InternalLen >::append(), llvm::Data, llvm::SmallVectorTemplateCommon< T, typename >::data(), llvm::DS_Abbrev, llvm::DS_CUIndex, llvm::DS_Info, llvm::DS_Line, llvm::DS_Loc, llvm::DS_Loclists, llvm::DS_Macro, llvm::DS_Rnglists, llvm::DS_Str, llvm::DS_StrOffsets, llvm::DS_TUIndex, llvm::DS_Types, llvm::little, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::ELF::SHF_EXCLUDE, llvm::ELF::SHF_MERGE, llvm::ELF::SHF_STRINGS, llvm::ELF::SHT_NULL, llvm::ELF::SHT_PROGBITS, llvm::ELF::SHT_STRTAB, llvm::ELF::SHT_SYMTAB, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::Error::success(), llvm::raw_ostream::write(), llvm::raw_ostream::write_zeros(), llvm::ELF::writeHeader(), and llvm::ELF::writeSectionHeader().

Referenced by write().

writeWASM()

Error llvm::DWPWriter::writeWASM

(

raw_pwrite_stream &

OS

)

Definition at line 1180 of file DWP.cpp.

References llvm::DS_Abbrev, llvm::DS_CUIndex, llvm::DS_Info, llvm::DS_Line, llvm::DS_Loc, llvm::DS_Loclists, llvm::DS_Macro, llvm::DS_Rnglists, llvm::DS_Str, llvm::DS_StrOffsets, llvm::DS_TUIndex, llvm::DS_Types, llvm::encodeULEB128(), llvm::Error::success(), llvm::Version, and llvm::raw_ostream::write().

Referenced by write().

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

• include/llvm/DWP/DWP.h
• lib/DWP/DWP.cpp