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Change relocation API to be per section. This time without breaking GCC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141385 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2011-10-07 19:25:32 +00:00
parent 186ffac4d3
commit 4344b1ef9b
8 changed files with 561 additions and 203 deletions
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378
lib/Object/ELFObjectFile.cpp
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@ -20,6 +20,8 @@
#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>
@ -286,6 +288,7 @@ class ELFObjectFile : public ObjectFile {
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;
@ -293,12 +296,22 @@ class ELFObjectFile : public ObjectFile {
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;
@ -306,6 +319,7 @@ class ELFObjectFile : public ObjectFile {
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;
@ -328,6 +342,8 @@ protected:
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;
@ -337,8 +353,12 @@ protected:
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);
@ -346,8 +366,6 @@ public:
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;
@ -404,18 +422,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
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>
@ -712,24 +719,65 @@ error_code ELFObjectFile<target_endianness, 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);
typename 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);
typename 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];
++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.
typename RelocMap_t::mapped_type &relocseclist =
SectionRelocMap.lookup(getSection(Rel.w.a));
// 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();
// Do a binary search for the current reloc section index (which must be
// present). Then get the next one.
typename 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;
}
@ -739,7 +787,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
::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!");
@ -767,7 +815,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
::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!");
@ -781,8 +829,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
}
}
const Elf_Shdr *secAddr = getSection(sec->sh_info);
Result = offset + reinterpret_cast<uintptr_t>(base() + secAddr->sh_offset);
Result = offset;
return object_error::success;
}
@ -790,7 +837,7 @@ template<support::endianness target_endianness, bool is64Bits>
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!");
@ -806,11 +853,127 @@ error_code ELFObjectFile<target_endianness, is64Bits>
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!");
@ -825,7 +988,60 @@ error_code ELFObjectFile<target_endianness, is64Bits>
}
}
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
@ -849,19 +1065,24 @@ 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 (typename 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) {
@ -894,8 +1115,8 @@ ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
}
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) {
@ -909,8 +1130,8 @@ ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
}
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();
@ -919,8 +1140,8 @@ ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
}
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);
@ -928,8 +1149,8 @@ ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
}
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()
@ -938,31 +1159,6 @@ ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
return section_iterator(SectionRef(ret, this));
}
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;
@ -1012,41 +1208,49 @@ unsigned ELFObjectFile<target_endianness, is64Bits>::getArch() const {
}
}
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;
@ -1084,6 +1288,24 @@ const char *ELFObjectFile<target_endianness, is64Bits>
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) {