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)
void	setIsLittleEndian (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 128 of file DWP.h.

References llvm::Data.

emitIntValue()

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

inline

Definition at line 136 of file DWP.h.

References I, Size, and uint64_t.

getSectionBuffer()

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

inline

Definition at line 120 of file DWP.h.

setIsLittleEndian()

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

inline

Definition at line 118 of file DWP.h.

setIsWASM()

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

inline

Definition at line 117 of file DWP.h.

setMachine()

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

inline

Definition at line 115 of file DWP.h.

References Machine.

setOSABI()

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

inline

Definition at line 116 of file DWP.h.

switchSection()

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

inline

Definition at line 124 of file DWP.h.

write()

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

inline

Definition at line 153 of file DWP.h.

References writeELF(), and writeWASM().

writeELF()

Error llvm::DWPWriter::writeELF

(

raw_pwrite_stream &

OS

)

Definition at line 1076 of file DWP.cpp.

References llvm::alignTo(), llvm::SmallString< InternalLen >::append(), llvm::big, 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, Size, 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 1211 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