#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/IntervalMap.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringSwitch.h"
typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
typedef Elf_Versym_Impl<ELFT> Elf_Versym;
+ typedef Elf_Hash_Impl<ELFT> Elf_Hash;
typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_Iter;
typedef iterator_range<Elf_Dyn_Iter> Elf_Dyn_Range;
typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
- typedef ELFEntityIterator<const Elf_Shdr> Elf_Shdr_Iter;
- typedef iterator_range<Elf_Shdr_Iter> Elf_Shdr_Range;
+ typedef iterator_range<const Elf_Shdr *> Elf_Shdr_Range;
/// \brief Archive files are 2 byte aligned, so we need this for
/// PointerIntPair to work.
}
const Elf_Ehdr *Header;
- const Elf_Shdr *SectionHeaderTable;
- StringRef DotShstrtab; // Section header string table.
- StringRef DotStrtab; // Symbol header string table.
- const Elf_Shdr *dot_symtab_sec; // Symbol table section.
-
- const Elf_Shdr *SymbolTableSectionHeaderIndex;
+ const Elf_Shdr *SectionHeaderTable = nullptr;
+ StringRef DotShstrtab; // Section header string table.
+ StringRef DotStrtab; // Symbol header string table.
+ const Elf_Shdr *dot_symtab_sec = nullptr; // Symbol table section.
+ StringRef DynSymStrTab; // Dynnamic symbol string table.
+ const Elf_Shdr *DotDynSymSec = nullptr; // Dynamic symbol table section.
+ const Elf_Hash *HashTable = nullptr;
+
+ const Elf_Shdr *SymbolTableSectionHeaderIndex = nullptr;
DenseMap<const Elf_Sym *, ELF::Elf64_Word> ExtendedSymbolTable;
- const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
- const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
- const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
+ const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version
+ const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r
+ const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d
/// \brief Represents a region described by entries in the .dynamic table.
struct DynRegionInfo {
DynRegionInfo DynamicRegion;
DynRegionInfo DynHashRegion;
- DynRegionInfo DynStrRegion;
- DynRegionInfo DynSymRegion;
DynRegionInfo DynRelaRegion;
// Pointer to SONAME entry in dynamic string table
// This is set the first time getLoadName is called.
- mutable const char *dt_soname;
+ mutable const char *dt_soname = nullptr;
// Records for each version index the corresponding Verdef or Vernaux entry.
// This is filled the first time LoadVersionMap() is called.
void LoadVersionNeeds(const Elf_Shdr *ec) const;
void LoadVersionMap() const;
+ void scanDynamicTable();
+
public:
template<typename T>
const T *getEntry(uint32_t Section, uint32_t Entry) const;
template <typename T>
const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
+
+ const Elf_Shdr *getDotSymtabSec() const { return dot_symtab_sec; }
+ const Elf_Shdr *getDotDynSymSec() const { return DotDynSymSec; }
+ const Elf_Hash *getHashTable() const { return HashTable; }
+
ErrorOr<StringRef> getStringTable(const Elf_Shdr *Section) const;
const char *getDynamicString(uintX_t Offset) const;
ErrorOr<StringRef> getSymbolVersion(const Elf_Shdr *section,
Header->getDataEncoding() == ELF::ELFDATA2LSB;
}
- Elf_Shdr_Iter begin_sections() const;
- Elf_Shdr_Iter end_sections() const;
+ const Elf_Shdr *section_begin() const;
+ const Elf_Shdr *section_end() const;
Elf_Shdr_Range sections() const {
- return make_range(begin_sections(), end_sections());
+ return make_range(section_begin(), section_end());
}
- const Elf_Sym *begin_symbols() const;
- const Elf_Sym *end_symbols() const;
+ const Elf_Sym *symbol_begin() const;
+ const Elf_Sym *symbol_end() const;
Elf_Sym_Range symbols() const {
- return make_range(begin_symbols(), end_symbols());
+ return make_range(symbol_begin(), symbol_end());
}
- Elf_Dyn_Iter begin_dynamic_table() const;
+ Elf_Dyn_Iter dynamic_table_begin() const;
/// \param NULLEnd use one past the first DT_NULL entry as the end instead of
/// the section size.
- Elf_Dyn_Iter end_dynamic_table(bool NULLEnd = false) const;
+ Elf_Dyn_Iter dynamic_table_end(bool NULLEnd = false) const;
Elf_Dyn_Range dynamic_table(bool NULLEnd = false) const {
- return make_range(begin_dynamic_table(), end_dynamic_table(NULLEnd));
+ return make_range(dynamic_table_begin(), dynamic_table_end(NULLEnd));
}
- const Elf_Sym *begin_dynamic_symbols() const {
- if (!DynSymRegion.Addr)
+ const Elf_Sym *dynamic_symbol_begin() const {
+ if (!DotDynSymSec)
return nullptr;
- if (DynSymRegion.EntSize != sizeof(Elf_Sym))
+ if (DotDynSymSec->sh_entsize != sizeof(Elf_Sym))
report_fatal_error("Invalid symbol size");
- return reinterpret_cast<const Elf_Sym *>(DynSymRegion.Addr);
+ return reinterpret_cast<const Elf_Sym *>(base() + DotDynSymSec->sh_offset);
}
- const Elf_Sym *end_dynamic_symbols() const {
- if (!DynSymRegion.Addr)
+ const Elf_Sym *dynamic_symbol_end() const {
+ if (!DotDynSymSec)
return nullptr;
- return reinterpret_cast<const Elf_Sym *>(
- ((const char *)DynSymRegion.Addr + DynSymRegion.Size));
+ return reinterpret_cast<const Elf_Sym *>(base() + DotDynSymSec->sh_offset +
+ DotDynSymSec->sh_size);
}
Elf_Sym_Range dynamic_symbols() const {
- return make_range(begin_dynamic_symbols(), end_dynamic_symbols());
+ return make_range(dynamic_symbol_begin(), dynamic_symbol_end());
}
- Elf_Rela_Iter begin_dyn_rela() const {
+ Elf_Rela_Iter dyn_rela_begin() const {
if (DynRelaRegion.Addr)
return Elf_Rela_Iter(DynRelaRegion.EntSize,
(const char *)DynRelaRegion.Addr);
return Elf_Rela_Iter(0, nullptr);
}
- Elf_Rela_Iter end_dyn_rela() const {
+ Elf_Rela_Iter dyn_rela_end() const {
if (DynRelaRegion.Addr)
return Elf_Rela_Iter(
DynRelaRegion.EntSize,
return Elf_Rela_Iter(0, nullptr);
}
- Elf_Rela_Iter begin_rela(const Elf_Shdr *sec) const {
+ Elf_Rela_Iter rela_begin(const Elf_Shdr *sec) const {
return Elf_Rela_Iter(sec->sh_entsize,
(const char *)(base() + sec->sh_offset));
}
- Elf_Rela_Iter end_rela(const Elf_Shdr *sec) const {
+ Elf_Rela_Iter rela_end(const Elf_Shdr *sec) const {
return Elf_Rela_Iter(
sec->sh_entsize,
(const char *)(base() + sec->sh_offset + sec->sh_size));
}
- Elf_Rel_Iter begin_rel(const Elf_Shdr *sec) const {
+ Elf_Rel_Iter rel_begin(const Elf_Shdr *sec) const {
return Elf_Rel_Iter(sec->sh_entsize,
(const char *)(base() + sec->sh_offset));
}
- Elf_Rel_Iter end_rel(const Elf_Shdr *sec) const {
+ Elf_Rel_Iter rel_end(const Elf_Shdr *sec) const {
return Elf_Rel_Iter(sec->sh_entsize,
(const char *)(base() + sec->sh_offset + sec->sh_size));
}
/// \brief Iterate over program header table.
typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
- Elf_Phdr_Iter begin_program_headers() const {
+ Elf_Phdr_Iter program_header_begin() const {
return Elf_Phdr_Iter(Header->e_phentsize,
(const char*)base() + Header->e_phoff);
}
- Elf_Phdr_Iter end_program_headers() const {
+ Elf_Phdr_Iter program_header_end() const {
return Elf_Phdr_Iter(Header->e_phentsize,
(const char*)base() +
Header->e_phoff +
uintX_t getStringTableIndex() const;
ELF::Elf64_Word getExtendedSymbolTableIndex(const Elf_Sym *symb) const;
const Elf_Ehdr *getHeader() const { return Header; }
- const Elf_Shdr *getSection(const Elf_Sym *symb) const;
- const Elf_Shdr *getSection(uint32_t Index) const;
+ ErrorOr<const Elf_Shdr *> getSection(const Elf_Sym *symb) const;
+ ErrorOr<const Elf_Shdr *> getSection(uint32_t Index) const;
const Elf_Sym *getSymbol(uint32_t index) const;
ErrorOr<StringRef> getStaticSymbolName(const Elf_Sym *Symb) const;
ErrorOr<StringRef> getSymbolName(const Elf_Sym *Symb, bool IsDynamic) const;
ErrorOr<StringRef> getSectionName(const Elf_Shdr *Section) const;
- uint64_t getSymbolIndex(const Elf_Sym *sym) const;
ErrorOr<ArrayRef<uint8_t> > getSectionContents(const Elf_Shdr *Sec) const;
StringRef getLoadName() const;
};
template <class ELFT>
void ELFFile<ELFT>::LoadVersionMap() const {
// If there is no dynamic symtab or version table, there is nothing to do.
- if (!DynSymRegion.Addr || !dot_gnu_version_sec)
+ if (!DotDynSymSec || !dot_gnu_version_sec)
return;
// Has the VersionMap already been loaded?
}
template <class ELFT>
-const typename ELFFile<ELFT>::Elf_Shdr *
+ErrorOr<const typename ELFFile<ELFT>::Elf_Shdr *>
ELFFile<ELFT>::getSection(const Elf_Sym *symb) const {
- if (symb->st_shndx == ELF::SHN_XINDEX)
+ uint32_t Index = symb->st_shndx;
+ if (Index == ELF::SHN_XINDEX)
return getSection(ExtendedSymbolTable.lookup(symb));
- if (symb->st_shndx >= ELF::SHN_LORESERVE)
+ if (Index == ELF::SHN_UNDEF || Index >= ELF::SHN_LORESERVE)
return nullptr;
return getSection(symb->st_shndx);
}
template <class ELFT>
const typename ELFFile<ELFT>::Elf_Sym *
ELFFile<ELFT>::getSymbol(uint32_t Index) const {
- return &*(begin_symbols() + Index);
+ return &*(symbol_begin() + Index);
}
template <class ELFT>
ELFFile<ELFT>::getRelocationSymbol(const Elf_Shdr *Sec, const RelT *Rel) const {
if (!Sec->sh_link)
return std::make_pair(nullptr, nullptr);
- const Elf_Shdr *SymTable = getSection(Sec->sh_link);
+ ErrorOr<const Elf_Shdr *> SymTableOrErr = getSection(Sec->sh_link);
+ if (std::error_code EC = SymTableOrErr.getError())
+ report_fatal_error(EC.message());
+ const Elf_Shdr *SymTable = *SymTableOrErr;
return std::make_pair(
SymTable, getEntry<Elf_Sym>(SymTable, Rel->getSymbol(isMips64EL())));
}
template <class ELFT>
ELFFile<ELFT>::ELFFile(StringRef Object, std::error_code &EC)
- : Buf(Object), SectionHeaderTable(nullptr), dot_symtab_sec(nullptr),
- SymbolTableSectionHeaderIndex(nullptr), dot_gnu_version_sec(nullptr),
- dot_gnu_version_r_sec(nullptr), dot_gnu_version_d_sec(nullptr),
- dt_soname(nullptr) {
+ : Buf(Object) {
const uint64_t FileSize = Buf.size();
if (sizeof(Elf_Ehdr) > FileSize) {
Header = reinterpret_cast<const Elf_Ehdr *>(base());
- if (Header->e_shoff == 0)
+ if (Header->e_shoff == 0) {
+ scanDynamicTable();
return;
+ }
const uint64_t SectionTableOffset = Header->e_shoff;
for (const Elf_Shdr &Sec : sections()) {
switch (Sec.sh_type) {
+ case ELF::SHT_HASH:
+ if (HashTable) {
+ EC = object_error::parse_failed;
+ return;
+ }
+ HashTable = reinterpret_cast<const Elf_Hash *>(base() + Sec.sh_offset);
+ break;
case ELF::SHT_SYMTAB_SHNDX:
if (SymbolTableSectionHeaderIndex) {
// More than one .symtab_shndx!
return;
}
dot_symtab_sec = &Sec;
- ErrorOr<StringRef> SymtabOrErr = getStringTable(getSection(Sec.sh_link));
+ ErrorOr<const Elf_Shdr *> SectionOrErr = getSection(Sec.sh_link);
+ if ((EC = SectionOrErr.getError()))
+ return;
+ ErrorOr<StringRef> SymtabOrErr = getStringTable(*SectionOrErr);
if ((EC = SymtabOrErr.getError()))
return;
DotStrtab = *SymtabOrErr;
} break;
case ELF::SHT_DYNSYM: {
- if (DynSymRegion.Addr) {
+ if (DotDynSymSec) {
// More than one .dynsym!
EC = object_error::parse_failed;
return;
}
- DynSymRegion.Addr = base() + Sec.sh_offset;
- DynSymRegion.Size = Sec.sh_size;
- DynSymRegion.EntSize = Sec.sh_entsize;
- const Elf_Shdr *DynStr = getSection(Sec.sh_link);
- DynStrRegion.Addr = base() + DynStr->sh_offset;
- DynStrRegion.Size = DynStr->sh_size;
- DynStrRegion.EntSize = DynStr->sh_entsize;
+ DotDynSymSec = &Sec;
+ ErrorOr<const Elf_Shdr *> SectionOrErr = getSection(Sec.sh_link);
+ if ((EC = SectionOrErr.getError()))
+ return;
+ ErrorOr<StringRef> SymtabOrErr = getStringTable(*SectionOrErr);
+ if ((EC = SymtabOrErr.getError()))
+ return;
+ DynSymStrTab = *SymtabOrErr;
break;
}
case ELF::SHT_DYNAMIC:
}
// Get string table sections.
- ErrorOr<StringRef> SymtabOrErr =
- getStringTable(getSection(getStringTableIndex()));
+ ErrorOr<const Elf_Shdr *> StrTabSecOrErr = getSection(getStringTableIndex());
+ if ((EC = StrTabSecOrErr.getError()))
+ return;
+
+ ErrorOr<StringRef> SymtabOrErr = getStringTable(*StrTabSecOrErr);
if ((EC = SymtabOrErr.getError()))
return;
DotShstrtab = *SymtabOrErr;
}
}
- // Scan program headers.
- for (Elf_Phdr_Iter PhdrI = begin_program_headers(),
- PhdrE = end_program_headers();
+ scanDynamicTable();
+
+ EC = std::error_code();
+}
+
+template <class ELFT>
+void ELFFile<ELFT>::scanDynamicTable() {
+ // Build load-address to file-offset map.
+ typedef IntervalMap<
+ uintX_t, uintptr_t,
+ IntervalMapImpl::NodeSizer<uintX_t, uintptr_t>::LeafSize,
+ IntervalMapHalfOpenInfo<uintX_t>> LoadMapT;
+ typename LoadMapT::Allocator Alloc;
+ LoadMapT LoadMap(Alloc);
+
+ for (Elf_Phdr_Iter PhdrI = program_header_begin(),
+ PhdrE = program_header_end();
PhdrI != PhdrE; ++PhdrI) {
if (PhdrI->p_type == ELF::PT_DYNAMIC) {
DynamicRegion.Addr = base() + PhdrI->p_offset;
DynamicRegion.Size = PhdrI->p_filesz;
DynamicRegion.EntSize = sizeof(Elf_Dyn);
- break;
+ continue;
}
+ if (PhdrI->p_type != ELF::PT_LOAD)
+ continue;
+ if (PhdrI->p_filesz == 0)
+ continue;
+ LoadMap.insert(PhdrI->p_vaddr, PhdrI->p_vaddr + PhdrI->p_filesz,
+ PhdrI->p_offset);
}
- // Scan dynamic table.
- for (Elf_Dyn_Iter DynI = begin_dynamic_table(), DynE = end_dynamic_table();
- DynI != DynE; ++DynI) {
+ auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * {
+ auto I = LoadMap.find(VAddr);
+ if (I == LoadMap.end())
+ return nullptr;
+ return this->base() + I.value() + (VAddr - I.start());
+ };
+
+ for (Elf_Dyn_Iter DynI = dynamic_table_begin(), DynE = dynamic_table_end();
+ DynI != DynE; ++DynI) {
switch (DynI->d_tag) {
- case ELF::DT_RELA: {
- uint64_t VBase = 0;
- const uint8_t *FBase = nullptr;
- for (Elf_Phdr_Iter PhdrI = begin_program_headers(),
- PhdrE = end_program_headers();
- PhdrI != PhdrE; ++PhdrI) {
- if (PhdrI->p_type != ELF::PT_LOAD)
- continue;
- if (DynI->getPtr() >= PhdrI->p_vaddr &&
- DynI->getPtr() < PhdrI->p_vaddr + PhdrI->p_memsz) {
- VBase = PhdrI->p_vaddr;
- FBase = base() + PhdrI->p_offset;
- break;
- }
- }
- if (!VBase)
- return;
- DynRelaRegion.Addr = FBase + DynI->getPtr() - VBase;
+ case ELF::DT_HASH:
+ if (HashTable)
+ continue;
+ HashTable =
+ reinterpret_cast<const Elf_Hash *>(toMappedAddr(DynI->getPtr()));
+ break;
+ case ELF::DT_RELA:
+ if (!DynRelaRegion.Addr)
+ DynRelaRegion.Addr = toMappedAddr(DynI->getPtr());
break;
- }
case ELF::DT_RELASZ:
DynRelaRegion.Size = DynI->getVal();
break;
DynRelaRegion.EntSize = DynI->getVal();
}
}
-
- EC = std::error_code();
}
-// Get the symbol table index in the symtab section given a symbol
template <class ELFT>
-uint64_t ELFFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
- uintptr_t SymLoc = uintptr_t(Sym);
- uintptr_t SymTabLoc = uintptr_t(base() + dot_symtab_sec->sh_offset);
- assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
- uint64_t SymOffset = SymLoc - SymTabLoc;
- assert(SymOffset % dot_symtab_sec->sh_entsize == 0 &&
- "Symbol not multiple of symbol size!");
- return SymOffset / dot_symtab_sec->sh_entsize;
+const typename ELFFile<ELFT>::Elf_Shdr *ELFFile<ELFT>::section_begin() const {
+ if (Header->e_shentsize != sizeof(Elf_Shdr))
+ report_fatal_error(
+ "Invalid section header entry size (e_shentsize) in ELF header");
+ return reinterpret_cast<const Elf_Shdr *>(base() + Header->e_shoff);
}
template <class ELFT>
-typename ELFFile<ELFT>::Elf_Shdr_Iter ELFFile<ELFT>::begin_sections() const {
- return Elf_Shdr_Iter(Header->e_shentsize,
- (const char *)base() + Header->e_shoff);
+const typename ELFFile<ELFT>::Elf_Shdr *ELFFile<ELFT>::section_end() const {
+ return section_begin() + getNumSections();
}
template <class ELFT>
-typename ELFFile<ELFT>::Elf_Shdr_Iter ELFFile<ELFT>::end_sections() const {
- return Elf_Shdr_Iter(Header->e_shentsize,
- (const char *)base() + Header->e_shoff +
- (getNumSections() * Header->e_shentsize));
-}
-
-template <class ELFT>
-const typename ELFFile<ELFT>::Elf_Sym *ELFFile<ELFT>::begin_symbols() const {
+const typename ELFFile<ELFT>::Elf_Sym *ELFFile<ELFT>::symbol_begin() const {
if (!dot_symtab_sec)
return nullptr;
if (dot_symtab_sec->sh_entsize != sizeof(Elf_Sym))
}
template <class ELFT>
-const typename ELFFile<ELFT>::Elf_Sym *ELFFile<ELFT>::end_symbols() const {
+const typename ELFFile<ELFT>::Elf_Sym *ELFFile<ELFT>::symbol_end() const {
if (!dot_symtab_sec)
return nullptr;
return reinterpret_cast<const Elf_Sym *>(base() + dot_symtab_sec->sh_offset +
template <class ELFT>
typename ELFFile<ELFT>::Elf_Dyn_Iter
-ELFFile<ELFT>::begin_dynamic_table() const {
+ELFFile<ELFT>::dynamic_table_begin() const {
if (DynamicRegion.Addr)
return Elf_Dyn_Iter(DynamicRegion.EntSize,
(const char *)DynamicRegion.Addr);
template <class ELFT>
typename ELFFile<ELFT>::Elf_Dyn_Iter
-ELFFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
+ELFFile<ELFT>::dynamic_table_end(bool NULLEnd) const {
if (!DynamicRegion.Addr)
return Elf_Dyn_Iter(0, nullptr);
Elf_Dyn_Iter Ret(DynamicRegion.EntSize,
(const char *)DynamicRegion.Addr + DynamicRegion.Size);
if (NULLEnd) {
- Elf_Dyn_Iter Start = begin_dynamic_table();
+ Elf_Dyn_Iter Start = dynamic_table_begin();
while (Start != Ret && Start->getTag() != ELF::DT_NULL)
++Start;
template <class ELFT>
template <typename T>
const T *ELFFile<ELFT>::getEntry(uint32_t Section, uint32_t Entry) const {
- return getEntry<T>(getSection(Section), Entry);
+ ErrorOr<const Elf_Shdr *> Sec = getSection(Section);
+ if (std::error_code EC = Sec.getError())
+ report_fatal_error(EC.message());
+ return getEntry<T>(*Sec, Entry);
}
template <class ELFT>
}
template <class ELFT>
-const typename ELFFile<ELFT>::Elf_Shdr *
-ELFFile<ELFT>::getSection(uint32_t index) const {
- if (index == 0)
- return nullptr;
- if (!SectionHeaderTable || index >= getNumSections())
- // FIXME: Proper error handling.
- report_fatal_error("Invalid section index!");
+ErrorOr<const typename ELFFile<ELFT>::Elf_Shdr *>
+ELFFile<ELFT>::getSection(uint32_t Index) const {
+ assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
+ if (Index >= getNumSections())
+ return object_error::invalid_section_index;
return reinterpret_cast<const Elf_Shdr *>(
- reinterpret_cast<const char *>(SectionHeaderTable)
- + (index * Header->e_shentsize));
+ reinterpret_cast<const char *>(SectionHeaderTable) +
+ (Index * Header->e_shentsize));
}
template <class ELFT>
template <class ELFT>
const char *ELFFile<ELFT>::getDynamicString(uintX_t Offset) const {
- if (!DynStrRegion.Addr || Offset >= DynStrRegion.Size)
+ if (!DotDynSymSec || Offset >= DynSymStrTab.size())
return nullptr;
- return (const char *)DynStrRegion.Addr + Offset;
+ return (const char *)DynSymStrTab.begin() + Offset;
}
template <class ELFT>
StrTab = *StrTabOrErr;
}
// Handle non-dynamic symbols.
- if (section != DynSymRegion.Addr && section != nullptr) {
+ if (section != DotDynSymSec && section != nullptr) {
// Non-dynamic symbols can have versions in their names
// A name of the form 'foo@V1' indicates version 'V1', non-default.
// A name of the form 'foo@@V2' indicates version 'V2', default version.
}
// Determine the position in the symbol table of this entry.
- size_t entry_index = ((const char *)symb - (const char *)DynSymRegion.Addr) /
- DynSymRegion.EntSize;
+ size_t entry_index =
+ (reinterpret_cast<uintptr_t>(symb) - DotDynSymSec->sh_offset -
+ reinterpret_cast<uintptr_t>(base())) /
+ sizeof(Elf_Sym);
// Get the corresponding version index entry
const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
IsDefault = false;
}
- if (name_offset >= DynStrRegion.Size)
+ if (name_offset >= DynSymStrTab.size())
return object_error::parse_failed;
return StringRef(getDynamicString(name_offset));
}