Dyninst::SymtabAPI::emitElf Class Reference

#include <emitElf.h>

Public Member Functions
	emitElf (Elf_X oldElfHandle_, bool isStripped_=false, Object obj_=NULL, void()(const char )=log_msg)
	~emitElf ()
bool	createSymbolTables (Symtab obj, vector< Symbol > &allSymbols)
bool	driver (Symtab *obj, std::string fName)
Private Member Functions
bool	createElfSymbol (Symbol symbol, unsigned strIndex, vector< Elf32_Sym > &symbols, bool dynSymFlag=false)
void	findSegmentEnds ()
void	renameSection (const std::string &oldStr, const std::string &newStr, bool renameAll=true)
void	fixPhdrs (unsigned &)
void	createNewPhdrRegion (dyn_hash_map< std::string, unsigned > &newNameIndexMapping)
bool	addSectionHeaderTable (Elf32_Shdr *shdr)
bool	createNonLoadableSections (Elf32_Shdr *&shdr)
bool	createLoadableSections (Symtab obj, Elf32_Shdr &shdr, unsigned &extraAlignSize, dyn_hash_map< std::string, unsigned > &newIndexMapping, unsigned &sectionNumber)
void	createRelocationSections (Symtab *obj, std::vector< relocationEntry > &relocation_table, bool isDynRelocs, dyn_hash_map< std::string, unsigned > &dynSymNameMapping)
void	updateSymbols (Elf_Data symtabData, Elf_Data strData, unsigned long loadSecsSize)
void	updateDynamic (unsigned tag, Elf32_Addr val)
void	createSymbolVersions (Symtab obj, Elf32_Half &symVers, char &verneedSecData, unsigned &verneedSecSize, char &verdefSecData, unsigned &verdefSecSize, unsigned &dynSymbolNamesLength, std::vector< std::string > &dynStrs)
void	createHashSection (Symtab obj, Elf32_Word &hashsecData, unsigned &hashsecSize, std::vector< Symbol * > &dynSymbols)
void	createDynamicSection (void dynData, unsigned size, Elf32_Dyn &dynsecData, unsigned &dynsecSize, unsigned &dynSymbolNamesLength, std::vector< std::string > &dynStrs)
void	addDTNeeded (std::string s)
void	log_elferror (void(err_func)(const char ), const char *msg)
bool	hasPHdrSectionBug ()
bool	cannotRelocatePhdrs ()
Private Attributes
Elf_X *	oldElfHandle
Elf *	newElf
Elf *	oldElf
Elf32_Ehdr *	newEhdr
Elf32_Ehdr *	oldEhdr
Elf32_Phdr *	newPhdr
Elf32_Phdr *	oldPhdr
Offset	phdr_offset
Elf_Data *	textData
Elf_Data *	symStrData
Elf_Data *	dynStrData
char *	olddynStrData
unsigned	olddynStrSize
Elf_Data *	symTabData
Elf_Data *	hashData
Elf_Data *	dynsymData
Elf_Data *	dynData
Elf_Data *	rodata
Elf_Data *	dataData
Elf32_Shdr *	textSh
Elf32_Shdr *	rodataSh
Elf_Scn *	phdrs_scn
std::vector< Region * >	nonLoadableSecs
std::vector< Region * >	newSecs
std::map< unsigned, std::vector< Elf32_Dyn * > >	dynamicSecData
std::vector< std::string >	DT_NEEDEDEntries
std::vector< std::pair< long, long > >	new_dynamic_entries
std::vector< std::string >	unversionedNeededEntries
std::map< std::string, std::map< std::string, unsigned > >	verneedEntries
std::map< std::string, unsigned >	verdefEntries
std::map< unsigned, std::vector< std::string > >	verdauxEntries
std::map< std::string, unsigned >	versionNames
std::vector< Elf32_Half >	versionSymTable
int	curVersionNum
int	verneednum
int	verdefnum
Elf32_Off	newSegmentStart
Elf32_Shdr *	firstNewLoadSec
Elf32_Off	dataSegEnd
Elf32_Off	textSegEnd
Elf32_Off	dynSegOff
Elf32_Off	dynSegAddr
Elf32_Off	phdrSegOff
Elf32_Off	phdrSegAddr
unsigned	dynSegSize
vector< std::string >	secNames
unsigned	secNameIndex
Offset	currEndOffset
Address	currEndAddress
char *	linkedStaticData
bool	BSSExpandFlag
bool	movePHdrsFirst
bool	createNewPhdr
bool	replaceNOTE
unsigned	loadSecTotalSize
bool	isStripped
int	library_adjust
Object *	object
void(*	err_func_ )(const char *)
bool	hasRewrittenTLS
bool	TLSExists
Elf32_Shdr *	newTLSData

Detailed Description

Definition at line 42 of file emitElf.h.

Constructor & Destructor Documentation

emitElf::emitElf	(	Elf_X *	oldElfHandle_,
		bool	isStripped_ = `false`,
		Object *	obj_ = `NULL`,
		void()(const char )	err_func = `log_msg`
	)

Definition at line 197 of file emitElf.C.

References BSSExpandFlag, cannotRelocatePhdrs(), createNewPhdr, curVersionNum, dynStrData, dynsymData, Dyninst::Elf_X::e_elfp(), firstNewLoadSec, hashData, Dyninst::SymtabAPI::Object::hasNoteSection(), hasRewrittenTLS, Dyninst::SymtabAPI::Object::isBlueGeneP(), library_adjust, linkedStaticData, movePHdrsFirst, newTLSData, oldElf, oldElfHandle, replaceNOTE, rodata, setVersion(), symStrData, symTabData, textData, and TLSExists.

Dyninst::SymtabAPI::emitElf::~emitElf ( ) [inline]

Definition at line 45 of file emitElf.h.

References linkedStaticData.

Member Function Documentation

void Dyninst::SymtabAPI::emitElf::addDTNeeded ( std::string s ) [private]

Referenced by createSymbolTables().

bool emitElf::addSectionHeaderTable ( Elf32_Shdr * shdr ) [private]

Definition at line 1586 of file emitElf.C.

References Elf_Data64::d_align, Elf_Data64::d_buf, Elf_Data64::d_off, Elf_Data64::d_size, Elf_Data64::d_type, Elf_Data64::d_version, err_func_, libelfso0Flag, log_elferror(), newElf, secNameIndex, and secNames.

bool emitElf::cannotRelocatePhdrs ( ) [private]

Definition at line 139 of file emitElf.C.

Referenced by emitElf().

void emitElf::createDynamicSection	(	void *	dynData,
		unsigned	size,
		Elf32_Dyn *&	dynsecData,
		unsigned &	dynsecSize,
		unsigned &	dynSymbolNamesLength,
		std::vector< std::string > &	dynStrs
	)			`[private]`

List every dynamic entry that references an address and isn't already updated here. library_adjust will be a page size if we're dealing with a library without a fixed load address. We'll be shifting the addresses of that library by a page.

Definition at line 2529 of file emitElf.C.

References DT_GNU_CONFLICT, DT_NEEDEDEntries, dynamicSecData, library_adjust, new_dynamic_entries, and olddynStrData.

Referenced by createSymbolTables().

bool emitElf::createElfSymbol	(	Symbol *	symbol,
		unsigned	strIndex,
		vector< Elf32_Sym * > &	symbols,
		bool	dynSymFlag = `false`
	)			`[private]`

Definition at line 271 of file emitElf.C.

Referenced by createSymbolTables().

void Dyninst::SymtabAPI::emitElf::createHashSection	(	Symtab *	obj,
		Elf32_Word *&	hashsecData,
		unsigned &	hashsecSize,
		std::vector< Symbol * > &	dynSymbols
	)			`[private]`

Referenced by createSymbolTables().

bool emitElf::createLoadableSections	(	Symtab *	obj,
		Elf32_Shdr *&	shdr,
		unsigned &	extraAlignSize,
		dyn_hash_map< std::string, unsigned > &	newIndexMapping,
		unsigned &	sectionNumber
	)			`[private]`

Definition at line 1238 of file emitElf.C.

void emitElf::createNewPhdrRegion ( dyn_hash_map< std::string, unsigned > & newNameIndexMapping ) [private]

Definition at line 916 of file emitElf.C.

References createNewPhdr, currEndAddress, currEndOffset, loadSecTotalSize, movePHdrsFirst, newEhdr, newElf, oldEhdr, phdr_offset, phdrs_scn, phdrSegAddr, phdrSegOff, secNameIndex, and secNames.

bool emitElf::createNonLoadableSections ( Elf32_Shdr *& shdr ) [private]

void emitElf::createRelocationSections	(	Symtab *	obj,
		std::vector< relocationEntry > &	relocation_table,
		bool	isDynRelocs,
		dyn_hash_map< std::string, unsigned > &	dynSymNameMapping
	)			`[private]`

Definition at line 2168 of file emitElf.C.

References library_adjust, newSecs, Dyninst::SymtabAPI::Region::RT_REL, and Dyninst::SymtabAPI::emitElfUtils::updateRelocation().

Referenced by createSymbolTables().

bool emitElf::createSymbolTables	(	Symtab *	obj,
		vector< Symbol * > &	allSymbols
	)

Definition at line 1814 of file emitElf.C.

Referenced by Dyninst::SymtabAPI::Object::emitDriver().

void Dyninst::SymtabAPI::emitElf::createSymbolVersions	(	Symtab *	obj,
		Elf32_Half *&	symVers,
		char *&	verneedSecData,
		unsigned &	verneedSecSize,
		char *&	verdefSecData,
		unsigned &	verdefSecSize,
		unsigned &	dynSymbolNamesLength,
		std::vector< std::string > &	dynStrs
	)			`[private]`