#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
#include <limits>
#include <utility>
typedef SmallVector<const Elf_Shdr*, 1> Sections_t;
typedef DenseMap<unsigned, unsigned> IndexMap_t;
+ typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
const Elf_Ehdr *Header;
const Elf_Shdr *SectionHeaderTable;
const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
Sections_t SymbolTableSections;
IndexMap_t SymbolTableSectionsIndexMap;
- Sections_t RelocationTableSections;
+
+ /// @brief Map sections to an array of relocation sections that reference
+ /// them sorted by section index.
+ RelocMap_t SectionRelocMap;
+
+ /// @brief Get the relocation section that contains \a Rel.
+ const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
+ return getSection(Rel.w.b);
+ }
void validateSymbol(DataRefImpl Symb) const;
bool isRelocationHasAddend(DataRefImpl Rel) const;
template<typename T>
- const T *getEntry(DataRefImpl Entry, Sections_t Sections) const;
+ const T *getEntry(uint16_t Section, uint32_t Entry) const;
+ template<typename T>
+ const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
const Elf_Sym *getSymbol(DataRefImpl Symb) const;
const Elf_Shdr *getSection(DataRefImpl index) const;
const Elf_Shdr *getSection(uint16_t index) const;
const Elf_Rela *getRela(DataRefImpl Rela) const;
const char *getString(uint16_t section, uint32_t offset) const;
const char *getString(const Elf_Shdr *section, uint32_t offset) const;
+ error_code getSymbolName(const Elf_Sym *Symb, StringRef &Res) const;
protected:
virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
+ virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
+ virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
SymbolRef &Res) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const;
+ virtual error_code getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const;
+ virtual error_code getRelocationValueString(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const;
public:
ELFObjectFile(MemoryBuffer *Object, error_code &ec);
virtual symbol_iterator end_symbols() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
- virtual relocation_iterator begin_relocations() const;
- virtual relocation_iterator end_relocations() const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
StringRef &Result) const {
validateSymbol(Symb);
const Elf_Sym *symb = getSymbol(Symb);
- if (symb->st_name == 0) {
- const Elf_Shdr *section = getSection(symb->st_shndx);
- if (!section)
- Result = "";
- else
- Result = getString(dot_shstrtab_sec, section->sh_name);
- return object_error::success;
- }
-
- // Use the default symbol table name section.
- Result = getString(dot_strtab_sec, symb->st_name);
- return object_error::success;
+ return getSymbolName(symb, Result);
}
template<support::endianness target_endianness, bool is64Bits>
return object_error::success;
}
+template<support::endianness target_endianness, bool is64Bits>
+relocation_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::getSectionRelBegin(DataRefImpl Sec) const {
+ DataRefImpl RelData;
+ memset(&RelData, 0, sizeof(RelData));
+ const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
+ if (sec != 0 && ittr != SectionRelocMap.end()) {
+ RelData.w.a = getSection(ittr->second[0])->sh_link;
+ RelData.w.b = ittr->second[0];
+ RelData.w.c = 0;
+ }
+ return relocation_iterator(RelocationRef(RelData, this));
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+relocation_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::getSectionRelEnd(DataRefImpl Sec) const {
+ DataRefImpl RelData;
+ memset(&RelData, 0, sizeof(RelData));
+ const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
+ if (sec != 0 && ittr != SectionRelocMap.end()) {
+ // Get the index of the last relocation section for this section.
+ std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
+ const Elf_Shdr *relocsec = getSection(relocsecindex);
+ RelData.w.a = relocsec->sh_link;
+ RelData.w.b = relocsecindex;
+ RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
+ }
+ return relocation_iterator(RelocationRef(RelData, this));
+}
+
// Relocations
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationNext(DataRefImpl Rel,
RelocationRef &Result) const {
- const Elf_Shdr *RelocationTableSection = RelocationTableSections[Rel.d.b];
-
- // Check to see if we are at the end of this relocation table.
- if (++Rel.d.a >= RelocationTableSection->getEntityCount()) {
- // We are at the end. If there are other relocation tables, jump to them.
- Rel.d.a = 0;
- // Otherwise return the terminator.
- if (++Rel.d.b >= SymbolTableSections.size()) {
- Rel.d.a = std::numeric_limits<uint32_t>::max();
- Rel.d.b = std::numeric_limits<uint32_t>::max();
+ ++Rel.w.c;
+ const Elf_Shdr *relocsec = getSection(Rel.w.b);
+ if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
+ // We have reached the end of the relocations for this section. See if there
+ // is another relocation section.
+ RelocMap_t::mapped_type &relocseclist =
+ SectionRelocMap.lookup(getSection(Rel.w.a));
+
+ // Do a binary search for the current reloc section index (which must be
+ // present). Then get the next one.
+ RelocMap_t::mapped_type::const_iterator loc =
+ std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
+ ++loc;
+
+ // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
+ // to the end iterator.
+ if (loc != relocseclist.end()) {
+ Rel.w.b = *loc;
+ Rel.w.a = 0;
}
}
-
Result = RelocationRef(Rel, this);
return object_error::success;
}
::getRelocationSymbol(DataRefImpl Rel,
SymbolRef &Result) const {
uint32_t symbolIdx;
- const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
+ const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
::getRelocationAddress(DataRefImpl Rel,
uint64_t &Result) const {
uint64_t offset;
- const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
+ const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
}
}
- const Elf_Shdr *secAddr = getSection(sec->sh_info);
- Result = offset + reinterpret_cast<uintptr_t>(base() + secAddr->sh_offset);
+ Result = offset;
return object_error::success;
}
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationType(DataRefImpl Rel,
uint32_t &Result) const {
- const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
+ const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
return object_error::success;
}
+#define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
+ case ELF::enum: res = #enum; break;
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
+ ::getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ const Elf_Shdr *sec = getSection(Rel.w.b);
+ uint8_t type;
+ StringRef res;
+ switch (sec->sh_type) {
+ default :
+ return object_error::parse_failed;
+ case ELF::SHT_REL : {
+ type = getRel(Rel)->getType();
+ break;
+ }
+ case ELF::SHT_RELA : {
+ type = getRela(Rel)->getType();
+ break;
+ }
+ }
+ switch (Header->e_machine) {
+ case ELF::EM_X86_64:
+ switch (type) {
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
+ default:
+ res = "Unknown";
+ }
+ break;
+ case ELF::EM_386:
+ switch (type) {
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
+ default:
+ res = "Unknown";
+ }
+ break;
+ default:
+ res = "Unknown";
+ }
+ Result.append(res.begin(), res.end());
+ return object_error::success;
+}
+
+#undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
+
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Result) const {
- const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
+ const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
}
}
-
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
+ ::getRelocationValueString(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ const Elf_Shdr *sec = getSection(Rel.w.b);
+ uint8_t type;
+ StringRef res;
+ int64_t addend = 0;
+ uint16_t symbol_index = 0;
+ switch (sec->sh_type) {
+ default :
+ return object_error::parse_failed;
+ case ELF::SHT_REL : {
+ type = getRel(Rel)->getType();
+ symbol_index = getRel(Rel)->getSymbol();
+ // TODO: Read implicit addend from section data.
+ break;
+ }
+ case ELF::SHT_RELA : {
+ type = getRela(Rel)->getType();
+ symbol_index = getRela(Rel)->getSymbol();
+ addend = getRela(Rel)->r_addend;
+ break;
+ }
+ }
+ const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
+ StringRef symname;
+ if (error_code ec = getSymbolName(symb, symname))
+ return ec;
+ switch (Header->e_machine) {
+ case ELF::EM_X86_64:
+ switch (type) {
+ case ELF::R_X86_64_32S:
+ res = symname;
+ break;
+ case ELF::R_X86_64_PC32: {
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ }
+ break;
+ default:
+ res = "Unknown";
+ }
+ break;
+ default:
+ res = "Unknown";
+ }
+ if (Result.empty())
+ Result.append(res.begin(), res.end());
+ return object_error::success;
+}
template<support::endianness target_endianness, bool is64Bits>
ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
// To find the symbol tables we walk the section table to find SHT_STMTAB.
- const Elf_Shdr* sh =
- reinterpret_cast<const Elf_Shdr*>(SectionHeaderTable);
+ const Elf_Shdr* sh = reinterpret_cast<const Elf_Shdr*>(SectionHeaderTable);
for (unsigned i = 0; i < Header->e_shnum; ++i) {
if (sh->sh_type == ELF::SHT_SYMTAB) {
SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
SymbolTableSections.push_back(sh);
}
if (sh->sh_type == ELF::SHT_REL || sh->sh_type == ELF::SHT_RELA) {
- RelocationTableSections.push_back(sh);
+ SectionRelocMap[getSection(sh->sh_link)].push_back(i);
}
++sh;
}
+ // Sort section relocation lists by index.
+ for (RelocMap_t::iterator i = SectionRelocMap.begin(),
+ e = SectionRelocMap.end(); i != e; ++i) {
+ std::sort(i->second.begin(), i->second.end());
+ }
+
// Get string table sections.
dot_shstrtab_sec = getSection(Header->e_shstrndx);
if (dot_shstrtab_sec) {
}
template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
- ::begin_symbols() const {
+symbol_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::begin_symbols() const {
DataRefImpl SymbolData;
memset(&SymbolData, 0, sizeof(SymbolData));
if (SymbolTableSections.size() == 0) {
}
template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
- ::end_symbols() const {
+symbol_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::end_symbols() const {
DataRefImpl SymbolData;
memset(&SymbolData, 0, sizeof(SymbolData));
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
}
template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
- ::begin_sections() const {
+section_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::begin_sections() const {
DataRefImpl ret;
memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
}
template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
- ::end_sections() const {
+section_iterator ELFObjectFile<target_endianness, is64Bits>
+ ::end_sections() const {
DataRefImpl ret;
memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base()
}
template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::relocation_iterator ELFObjectFile<target_endianness, is64Bits>
- ::begin_relocations() const {
- DataRefImpl RelData;
- memset(&RelData, 0, sizeof(RelData));
- if (RelocationTableSections.size() == 0) {
- RelData.d.a = std::numeric_limits<uint32_t>::max();
- RelData.d.b = std::numeric_limits<uint32_t>::max();
- } else {
- RelData.d.a = 0;
- RelData.d.b = 0;
- }
- return relocation_iterator(RelocationRef(RelData, this));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-ObjectFile::relocation_iterator ELFObjectFile<target_endianness, is64Bits>
- ::end_relocations() const {
- DataRefImpl RelData;
- memset(&RelData, 0, sizeof(RelData));
- RelData.d.a = std::numeric_limits<uint32_t>::max();
- RelData.d.b = std::numeric_limits<uint32_t>::max();
- return relocation_iterator(RelocationRef(RelData, this));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
uint8_t ELFObjectFile<target_endianness, is64Bits>::getBytesInAddress() const {
return is64Bits ? 8 : 4;
}
}
}
+
template<support::endianness target_endianness, bool is64Bits>
template<typename T>
inline const T *
-ELFObjectFile<target_endianness, is64Bits>::getEntry(DataRefImpl Entry,
- Sections_t Sections) const {
- const Elf_Shdr *sec = Sections[Entry.d.b];
+ELFObjectFile<target_endianness, is64Bits>::getEntry(uint16_t Section,
+ uint32_t Entry) const {
+ return getEntry<T>(getSection(Section), Entry);
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+template<typename T>
+inline const T *
+ELFObjectFile<target_endianness, is64Bits>::getEntry(const Elf_Shdr * Section,
+ uint32_t Entry) const {
return reinterpret_cast<const T *>(
base()
- + sec->sh_offset
- + (Entry.d.a * sec->sh_entsize));
+ + Section->sh_offset
+ + (Entry * Section->sh_entsize));
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
ELFObjectFile<target_endianness, is64Bits>::getSymbol(DataRefImpl Symb) const {
- return getEntry<Elf_Sym>(Symb, SymbolTableSections);
+ return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rel *
ELFObjectFile<target_endianness, is64Bits>::getRel(DataRefImpl Rel) const {
- return getEntry<Elf_Rel>(Rel, RelocationTableSections);
+ return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rela *
ELFObjectFile<target_endianness, is64Bits>::getRela(DataRefImpl Rela) const {
- return getEntry<Elf_Rela>(Rela, RelocationTableSections);
+ return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
ELFObjectFile<target_endianness, is64Bits>::getSection(DataRefImpl Symb) const {
const Elf_Shdr *sec = getSection(Symb.d.b);
- if (sec->sh_type != ELF::SHT_SYMTAB)
+ if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
// FIXME: Proper error handling.
report_fatal_error("Invalid symbol table section!");
return sec;
return (const char *)base() + section->sh_offset + offset;
}
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
+ ::getSymbolName(const Elf_Sym *symb,
+ StringRef &Result) const {
+ if (symb->st_name == 0) {
+ const Elf_Shdr *section = getSection(symb->st_shndx);
+ if (!section)
+ Result = "";
+ else
+ Result = getString(dot_shstrtab_sec, section->sh_name);
+ return object_error::success;
+ }
+
+ // Use the default symbol table name section.
+ Result = getString(dot_strtab_sec, symb->st_name);
+ return object_error::success;
+}
+
// EI_CLASS, EI_DATA.
static std::pair<unsigned char, unsigned char>
getElfArchType(MemoryBuffer *Object) {
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