//
//===----------------------------------------------------------------------===//
//
-// This file defines the ELFObjectFile and DyldELFObject classes.
+// Part of the ELFObjectFile class implementation.
//
//===----------------------------------------------------------------------===//
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/Object/ObjectFile.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/ELF.h"
-#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>
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Support/MathExtras.h"
-using namespace llvm;
+namespace llvm {
using namespace object;
-// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
-namespace {
-template<support::endianness target_endianness>
-struct ELFDataTypeTypedefHelperCommon {
- typedef support::detail::packed_endian_specific_integral
- <uint16_t, target_endianness, support::aligned> Elf_Half;
- typedef support::detail::packed_endian_specific_integral
- <uint32_t, target_endianness, support::aligned> Elf_Word;
- typedef support::detail::packed_endian_specific_integral
- <int32_t, target_endianness, support::aligned> Elf_Sword;
- typedef support::detail::packed_endian_specific_integral
- <uint64_t, target_endianness, support::aligned> Elf_Xword;
- typedef support::detail::packed_endian_specific_integral
- <int64_t, target_endianness, support::aligned> Elf_Sxword;
-};
-}
-
-namespace {
-template<support::endianness target_endianness, bool is64Bits>
-struct ELFDataTypeTypedefHelper;
-
-/// ELF 32bit types.
-template<support::endianness target_endianness>
-struct ELFDataTypeTypedefHelper<target_endianness, false>
- : ELFDataTypeTypedefHelperCommon<target_endianness> {
- typedef uint32_t value_type;
- typedef support::detail::packed_endian_specific_integral
- <value_type, target_endianness, support::aligned> Elf_Addr;
- typedef support::detail::packed_endian_specific_integral
- <value_type, target_endianness, support::aligned> Elf_Off;
-};
-
-/// ELF 64bit types.
-template<support::endianness target_endianness>
-struct ELFDataTypeTypedefHelper<target_endianness, true>
- : ELFDataTypeTypedefHelperCommon<target_endianness>{
- typedef uint64_t value_type;
- typedef support::detail::packed_endian_specific_integral
- <value_type, target_endianness, support::aligned> Elf_Addr;
- typedef support::detail::packed_endian_specific_integral
- <value_type, target_endianness, support::aligned> Elf_Off;
-};
-}
-
-// I really don't like doing this, but the alternative is copypasta.
-#define LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits) \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Addr Elf_Addr; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Off Elf_Off; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Half Elf_Half; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Word Elf_Word; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sword Elf_Sword; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Xword Elf_Xword; \
-typedef typename \
- ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sxword Elf_Sxword;
-
- // Section header.
-namespace {
-template<support::endianness target_endianness, bool is64Bits>
-struct Elf_Shdr_Base;
-
-template<support::endianness target_endianness>
-struct Elf_Shdr_Base<target_endianness, false> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, false)
- Elf_Word sh_name; // Section name (index into string table)
- Elf_Word sh_type; // Section type (SHT_*)
- Elf_Word sh_flags; // Section flags (SHF_*)
- Elf_Addr sh_addr; // Address where section is to be loaded
- Elf_Off sh_offset; // File offset of section data, in bytes
- Elf_Word sh_size; // Size of section, in bytes
- Elf_Word sh_link; // Section type-specific header table index link
- Elf_Word sh_info; // Section type-specific extra information
- Elf_Word sh_addralign;// Section address alignment
- Elf_Word sh_entsize; // Size of records contained within the section
-};
-
-template<support::endianness target_endianness>
-struct Elf_Shdr_Base<target_endianness, true> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, true)
- Elf_Word sh_name; // Section name (index into string table)
- Elf_Word sh_type; // Section type (SHT_*)
- Elf_Xword sh_flags; // Section flags (SHF_*)
- Elf_Addr sh_addr; // Address where section is to be loaded
- Elf_Off sh_offset; // File offset of section data, in bytes
- Elf_Xword sh_size; // Size of section, in bytes
- Elf_Word sh_link; // Section type-specific header table index link
- Elf_Word sh_info; // Section type-specific extra information
- Elf_Xword sh_addralign;// Section address alignment
- Elf_Xword sh_entsize; // Size of records contained within the section
-};
-
-template<support::endianness target_endianness, bool is64Bits>
-struct Elf_Shdr_Impl : Elf_Shdr_Base<target_endianness, is64Bits> {
- using Elf_Shdr_Base<target_endianness, is64Bits>::sh_entsize;
- using Elf_Shdr_Base<target_endianness, is64Bits>::sh_size;
-
- /// @brief Get the number of entities this section contains if it has any.
- unsigned getEntityCount() const {
- if (sh_entsize == 0)
- return 0;
- return sh_size / sh_entsize;
- }
-};
-}
-
-namespace {
-template<support::endianness target_endianness, bool is64Bits>
-struct Elf_Sym_Base;
-
-template<support::endianness target_endianness>
-struct Elf_Sym_Base<target_endianness, false> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, false)
- Elf_Word st_name; // Symbol name (index into string table)
- Elf_Addr st_value; // Value or address associated with the symbol
- Elf_Word st_size; // Size of the symbol
- unsigned char st_info; // Symbol's type and binding attributes
- unsigned char st_other; // Must be zero; reserved
- Elf_Half st_shndx; // Which section (header table index) it's defined in
-};
-
-template<support::endianness target_endianness>
-struct Elf_Sym_Base<target_endianness, true> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, true)
- Elf_Word st_name; // Symbol name (index into string table)
- unsigned char st_info; // Symbol's type and binding attributes
- unsigned char st_other; // Must be zero; reserved
- Elf_Half st_shndx; // Which section (header table index) it's defined in
- Elf_Addr st_value; // Value or address associated with the symbol
- Elf_Xword st_size; // Size of the symbol
-};
-
-template<support::endianness target_endianness, bool is64Bits>
-struct Elf_Sym_Impl : Elf_Sym_Base<target_endianness, is64Bits> {
- using Elf_Sym_Base<target_endianness, is64Bits>::st_info;
-
- // These accessors and mutators correspond to the ELF32_ST_BIND,
- // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
- unsigned char getBinding() const { return st_info >> 4; }
- unsigned char getType() const { return st_info & 0x0f; }
- void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
- void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
- void setBindingAndType(unsigned char b, unsigned char t) {
- st_info = (b << 4) + (t & 0x0f);
- }
-};
-}
-
-namespace {
-template<support::endianness target_endianness, bool is64Bits, bool isRela>
-struct Elf_Rel_Base;
-
-template<support::endianness target_endianness>
-struct Elf_Rel_Base<target_endianness, false, false> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, false)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Word r_info; // Symbol table index and type of relocation to apply
-};
-
-template<support::endianness target_endianness>
-struct Elf_Rel_Base<target_endianness, true, false> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, true)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Xword r_info; // Symbol table index and type of relocation to apply
-};
-
-template<support::endianness target_endianness>
-struct Elf_Rel_Base<target_endianness, false, true> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, false)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Word r_info; // Symbol table index and type of relocation to apply
- Elf_Sword r_addend; // Compute value for relocatable field by adding this
-};
-
-template<support::endianness target_endianness>
-struct Elf_Rel_Base<target_endianness, true, true> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, true)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Xword r_info; // Symbol table index and type of relocation to apply
- Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
-};
-
-template<support::endianness target_endianness, bool is64Bits, bool isRela>
-struct Elf_Rel_Impl;
-
-template<support::endianness target_endianness, bool isRela>
-struct Elf_Rel_Impl<target_endianness, true, isRela>
- : Elf_Rel_Base<target_endianness, true, isRela> {
- using Elf_Rel_Base<target_endianness, true, isRela>::r_info;
- LLVM_ELF_IMPORT_TYPES(target_endianness, true)
-
- // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
- // and ELF64_R_INFO macros defined in the ELF specification:
- uint64_t getSymbol() const { return (r_info >> 32); }
- unsigned char getType() const {
- return (unsigned char) (r_info & 0xffffffffL);
- }
- void setSymbol(uint64_t s) { setSymbolAndType(s, getType()); }
- void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
- void setSymbolAndType(uint64_t s, unsigned char t) {
- r_info = (s << 32) + (t&0xffffffffL);
- }
-};
-
-template<support::endianness target_endianness, bool isRela>
-struct Elf_Rel_Impl<target_endianness, false, isRela>
- : Elf_Rel_Base<target_endianness, false, isRela> {
- using Elf_Rel_Base<target_endianness, false, isRela>::r_info;
- LLVM_ELF_IMPORT_TYPES(target_endianness, false)
-
- // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
- // and ELF32_R_INFO macros defined in the ELF specification:
- uint32_t getSymbol() const { return (r_info >> 8); }
- unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
- void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
- void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
- void setSymbolAndType(uint32_t s, unsigned char t) {
- r_info = (s << 8) + t;
- }
-};
-
-}
-
-namespace {
-template<support::endianness target_endianness, bool is64Bits>
-class ELFObjectFile : public ObjectFile {
- LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
-
- typedef Elf_Shdr_Impl<target_endianness, is64Bits> Elf_Shdr;
- typedef Elf_Sym_Impl<target_endianness, is64Bits> Elf_Sym;
- typedef Elf_Rel_Impl<target_endianness, is64Bits, false> Elf_Rel;
- typedef Elf_Rel_Impl<target_endianness, is64Bits, true> Elf_Rela;
-
-protected:
- struct Elf_Ehdr {
- unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
- Elf_Half e_type; // Type of file (see ET_*)
- Elf_Half e_machine; // Required architecture for this file (see EM_*)
- Elf_Word e_version; // Must be equal to 1
- Elf_Addr e_entry; // Address to jump to in order to start program
- Elf_Off e_phoff; // Program header table's file offset, in bytes
- Elf_Off e_shoff; // Section header table's file offset, in bytes
- Elf_Word e_flags; // Processor-specific flags
- Elf_Half e_ehsize; // Size of ELF header, in bytes
- Elf_Half e_phentsize;// Size of an entry in the program header table
- Elf_Half e_phnum; // Number of entries in the program header table
- Elf_Half e_shentsize;// Size of an entry in the section header table
- Elf_Half e_shnum; // Number of entries in the section header table
- Elf_Half e_shstrndx; // Section header table index of section name
- // string table
- bool checkMagic() const {
- return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
- }
- unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
- unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
- };
- // This flag is used for classof, to distinguish ELFObjectFile from
- // its subclass. If more subclasses will be created, this flag will
- // have to become an enum.
- bool isDyldELFObject;
-
-private:
- 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_shstrtab_sec; // Section header string table.
- const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
- Sections_t SymbolTableSections;
- IndexMap_t SymbolTableSectionsIndexMap;
- DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
-
- /// @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);
- }
-
- bool isRelocationHasAddend(DataRefImpl Rel) const;
- template<typename T>
- 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_Shdr *getSection(DataRefImpl index) const;
- const Elf_Shdr *getSection(uint32_t index) const;
- const Elf_Rel *getRel(DataRefImpl Rel) const;
- const Elf_Rela *getRela(DataRefImpl Rela) const;
- const char *getString(uint32_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:
- const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
- void validateSymbol(DataRefImpl Symb) const;
-
-protected:
- virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
- virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
- virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
- virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
- virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
- virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
- virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const;
- virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const;
- virtual error_code isSymbolWeak(DataRefImpl Symb, bool &Res) const;
- virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
- virtual error_code isSymbolAbsolute(DataRefImpl Symb, bool &Res) const;
- virtual error_code getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const;
-
- virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
- virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
- virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
- virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
- virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
- virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
- virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
- virtual error_code isSectionData(DataRefImpl Sec, bool &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;
- virtual error_code getRelocationAddress(DataRefImpl Rel,
- uint64_t &Res) const;
- virtual error_code getRelocationOffset(DataRefImpl Rel,
- uint64_t &Res) const;
- virtual error_code getRelocationSymbol(DataRefImpl Rel,
- SymbolRef &Res) const;
- virtual error_code getRelocationType(DataRefImpl Rel,
- uint64_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 begin_symbols() const;
- virtual symbol_iterator end_symbols() const;
- virtual section_iterator begin_sections() const;
- virtual section_iterator end_sections() const;
-
- virtual uint8_t getBytesInAddress() const;
- virtual StringRef getFileFormatName() const;
- virtual unsigned getArch() const;
-
- uint64_t getNumSections() const;
- uint64_t getStringTableIndex() const;
- ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
- const Elf_Shdr *getSection(const Elf_Sym *symb) const;
-
- // Methods for type inquiry through isa, cast, and dyn_cast
- bool isDyldType() const { return isDyldELFObject; }
- static inline bool classof(const Binary *v) {
- return v->getType() == Binary::isELF;
- }
- static inline bool classof(const ELFObjectFile *v) { return true; }
-};
-} // end namespace
-
-template<support::endianness target_endianness, bool is64Bits>
-void ELFObjectFile<target_endianness, is64Bits>
- ::validateSymbol(DataRefImpl Symb) const {
- const Elf_Sym *symb = getSymbol(Symb);
- const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
- // FIXME: We really need to do proper error handling in the case of an invalid
- // input file. Because we don't use exceptions, I think we'll just pass
- // an error object around.
- if (!( symb
- && SymbolTableSection
- && symb >= (const Elf_Sym*)(base()
- + SymbolTableSection->sh_offset)
- && symb < (const Elf_Sym*)(base()
- + SymbolTableSection->sh_offset
- + SymbolTableSection->sh_size)))
- // FIXME: Proper error handling.
- report_fatal_error("Symb must point to a valid symbol!");
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolNext(DataRefImpl Symb,
- SymbolRef &Result) const {
- validateSymbol(Symb);
- const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
-
- ++Symb.d.a;
- // Check to see if we are at the end of this symbol table.
- if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
- // We are at the end. If there are other symbol tables, jump to them.
- ++Symb.d.b;
- Symb.d.a = 1; // The 0th symbol in ELF is fake.
- // Otherwise return the terminator.
- if (Symb.d.b >= SymbolTableSections.size()) {
- Symb.d.a = std::numeric_limits<uint32_t>::max();
- Symb.d.b = std::numeric_limits<uint32_t>::max();
- }
- }
-
- Result = SymbolRef(Symb, this);
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolName(DataRefImpl Symb,
- StringRef &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- return getSymbolName(symb, Result);
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-ELF::Elf64_Word ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolTableIndex(const Elf_Sym *symb) const {
- if (symb->st_shndx == ELF::SHN_XINDEX)
- return ExtendedSymbolTable.lookup(symb);
- return symb->st_shndx;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
-ELFObjectFile<target_endianness, is64Bits>
- ::getSection(const Elf_Sym *symb) const {
- if (symb->st_shndx == ELF::SHN_XINDEX)
- return getSection(ExtendedSymbolTable.lookup(symb));
- if (symb->st_shndx >= ELF::SHN_LORESERVE)
- return 0;
- return getSection(symb->st_shndx);
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolFileOffset(DataRefImpl Symb,
- uint64_t &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- const Elf_Shdr *Section;
- switch (getSymbolTableIndex(symb)) {
- case ELF::SHN_COMMON:
- // Unintialized symbols have no offset in the object file
- case ELF::SHN_UNDEF:
- Result = UnknownAddressOrSize;
- return object_error::success;
- case ELF::SHN_ABS:
- Result = symb->st_value;
- return object_error::success;
- default: Section = getSection(symb);
- }
-
- switch (symb->getType()) {
- case ELF::STT_SECTION:
- Result = Section ? Section->sh_addr : UnknownAddressOrSize;
- return object_error::success;
- case ELF::STT_FUNC:
- case ELF::STT_OBJECT:
- case ELF::STT_NOTYPE:
- Result = symb->st_value +
- (Section ? Section->sh_offset : 0);
- return object_error::success;
- default:
- Result = UnknownAddressOrSize;
- return object_error::success;
- }
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolAddress(DataRefImpl Symb,
- uint64_t &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- const Elf_Shdr *Section;
- switch (getSymbolTableIndex(symb)) {
- case ELF::SHN_COMMON:
- case ELF::SHN_UNDEF:
- Result = UnknownAddressOrSize;
- return object_error::success;
- case ELF::SHN_ABS:
- Result = symb->st_value;
- return object_error::success;
- default: Section = getSection(symb);
- }
-
- switch (symb->getType()) {
- case ELF::STT_SECTION:
- Result = Section ? Section->sh_addr : UnknownAddressOrSize;
- return object_error::success;
- case ELF::STT_FUNC:
- case ELF::STT_OBJECT:
- case ELF::STT_NOTYPE:
- Result = symb->st_value + (Section ? Section->sh_addr : 0);
- return object_error::success;
- default:
- Result = UnknownAddressOrSize;
- return object_error::success;
- }
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolSize(DataRefImpl Symb,
- uint64_t &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- if (symb->st_size == 0)
- Result = UnknownAddressOrSize;
- Result = symb->st_size;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolNMTypeChar(DataRefImpl Symb,
- char &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- const Elf_Shdr *Section = getSection(symb);
-
- char ret = '?';
-
- if (Section) {
- switch (Section->sh_type) {
- case ELF::SHT_PROGBITS:
- case ELF::SHT_DYNAMIC:
- switch (Section->sh_flags) {
- case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
- ret = 't'; break;
- case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
- ret = 'd'; break;
- case ELF::SHF_ALLOC:
- case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
- case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
- ret = 'r'; break;
- }
- break;
- case ELF::SHT_NOBITS: ret = 'b';
- }
- }
-
- switch (getSymbolTableIndex(symb)) {
- case ELF::SHN_UNDEF:
- if (ret == '?')
- ret = 'U';
- break;
- case ELF::SHN_ABS: ret = 'a'; break;
- case ELF::SHN_COMMON: ret = 'c'; break;
- }
-
- switch (symb->getBinding()) {
- case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
- case ELF::STB_WEAK:
- if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
- ret = 'w';
+ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
+ bool BufferOwned) {
+ std::pair<unsigned char, unsigned char> Ident = getElfArchType(Obj);
+ std::size_t MaxAlignment =
+ 1ULL << countTrailingZeros(uintptr_t(Obj->getBufferStart()));
+
+ error_code EC;
+ std::unique_ptr<ObjectFile> R;
+ if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
+ if (MaxAlignment >= 4)
+ R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >(
+ Obj, EC, BufferOwned));
else
- if (symb->getType() == ELF::STT_OBJECT)
- ret = 'V';
- else
- ret = 'W';
- }
-
- if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
- StringRef name;
- if (error_code ec = getSymbolName(Symb, name))
- return ec;
- Result = StringSwitch<char>(name)
- .StartsWith(".debug", 'N')
- .StartsWith(".note", 'n')
- .Default('?');
- return object_error::success;
- }
-
- Result = ret;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolType(DataRefImpl Symb,
- SymbolRef::Type &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
-
- if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF) {
- Result = SymbolRef::ST_External;
- return object_error::success;
- }
-
- switch (symb->getType()) {
- case ELF::STT_SECTION:
- Result = SymbolRef::ST_Debug;
- break;
- case ELF::STT_FILE:
- Result = SymbolRef::ST_File;
- break;
- case ELF::STT_FUNC:
- Result = SymbolRef::ST_Function;
- break;
- case ELF::STT_OBJECT:
- Result = SymbolRef::ST_Data;
- break;
- default:
- Result = SymbolRef::ST_Other;
- break;
- }
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSymbolGlobal(DataRefImpl Symb,
- bool &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
-
- Result = symb->getBinding() == ELF::STB_GLOBAL;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSymbolWeak(DataRefImpl Symb,
- bool &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
-
- Result = symb->getBinding() == ELF::STB_WEAK;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSymbolAbsolute(DataRefImpl Symb, bool &Res) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- Res = symb->st_shndx == ELF::SHN_ABS;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
- const Elf_Shdr *sec = getSection(symb);
- if (!sec)
- Res = end_sections();
- else {
- DataRefImpl Sec;
- Sec.p = reinterpret_cast<intptr_t>(sec);
- Res = section_iterator(SectionRef(Sec, this));
- }
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSymbolInternal(DataRefImpl Symb,
- bool &Result) const {
- validateSymbol(Symb);
- const Elf_Sym *symb = getSymbol(Symb);
-
- if ( symb->getType() == ELF::STT_FILE
- || symb->getType() == ELF::STT_SECTION)
- Result = true;
- Result = false;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionNext(DataRefImpl Sec, SectionRef &Result) const {
- const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
- sec += Header->e_shentsize;
- Sec.p = reinterpret_cast<intptr_t>(sec);
- Result = SectionRef(Sec, this);
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionName(DataRefImpl Sec,
- StringRef &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionAddress(DataRefImpl Sec,
- uint64_t &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- Result = sec->sh_addr;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionSize(DataRefImpl Sec,
- uint64_t &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- Result = sec->sh_size;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionContents(DataRefImpl Sec,
- StringRef &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- const char *start = (const char*)base() + sec->sh_offset;
- Result = StringRef(start, sec->sh_size);
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getSectionAlignment(DataRefImpl Sec,
- uint64_t &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- Result = sec->sh_addralign;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSectionText(DataRefImpl Sec,
- bool &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- if (sec->sh_flags & ELF::SHF_EXECINSTR)
- Result = true;
- else
- Result = false;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSectionData(DataRefImpl Sec,
- bool &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
- && sec->sh_type == ELF::SHT_PROGBITS)
- Result = true;
- else
- Result = false;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::isSectionBSS(DataRefImpl Sec,
- bool &Result) const {
- const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
- && sec->sh_type == ELF::SHT_NOBITS)
- Result = true;
- else
- Result = false;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::sectionContainsSymbol(DataRefImpl Sec,
- DataRefImpl Symb,
- bool &Result) const {
- // FIXME: Unimplemented.
- Result = false;
- 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_info;
- 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_info;
- 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 {
- ++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));
-
- // 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;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getRelocationSymbol(DataRefImpl Rel,
- SymbolRef &Result) const {
- uint32_t symbolIdx;
- const Elf_Shdr *sec = getSection(Rel.w.b);
- switch (sec->sh_type) {
- default :
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL : {
- symbolIdx = getRel(Rel)->getSymbol();
- break;
- }
- case ELF::SHT_RELA : {
- symbolIdx = getRela(Rel)->getSymbol();
- break;
- }
- }
- DataRefImpl SymbolData;
- IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
- if (it == SymbolTableSectionsIndexMap.end())
- report_fatal_error("Relocation symbol table not found!");
- SymbolData.d.a = symbolIdx;
- SymbolData.d.b = it->second;
- Result = SymbolRef(SymbolData, this);
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getRelocationAddress(DataRefImpl Rel,
- uint64_t &Result) const {
- uint64_t offset;
- const Elf_Shdr *sec = getSection(Rel.w.b);
- switch (sec->sh_type) {
- default :
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL : {
- offset = getRel(Rel)->r_offset;
- break;
- }
- case ELF::SHT_RELA : {
- offset = getRela(Rel)->r_offset;
- break;
- }
- }
-
- Result = offset;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getRelocationOffset(DataRefImpl Rel,
- uint64_t &Result) const {
- uint64_t offset;
- const Elf_Shdr *sec = getSection(Rel.w.b);
- switch (sec->sh_type) {
- default :
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL : {
- offset = getRel(Rel)->r_offset;
- break;
- }
- case ELF::SHT_RELA : {
- offset = getRela(Rel)->r_offset;
- break;
- }
- }
-
- Result = offset - sec->sh_addr;
- return object_error::success;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-error_code ELFObjectFile<target_endianness, is64Bits>
- ::getRelocationType(DataRefImpl Rel,
- uint64_t &Result) const {
- const Elf_Shdr *sec = getSection(Rel.w.b);
- switch (sec->sh_type) {
- default :
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL : {
- Result = getRel(Rel)->getType();
- break;
- }
- case ELF::SHT_RELA : {
- Result = getRela(Rel)->getType();
- break;
- }
- }
- 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 = getSection(Rel.w.b);
- switch (sec->sh_type) {
- default :
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL : {
- Result = 0;
- return object_error::success;
- }
- case ELF::SHT_RELA : {
- Result = getRela(Rel)->r_addend;
- return object_error::success;
- }
- }
-}
-
-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
- , error_code &ec)
- : ObjectFile(Binary::isELF, Object, ec)
- , isDyldELFObject(false)
- , SectionHeaderTable(0)
- , dot_shstrtab_sec(0)
- , dot_strtab_sec(0) {
- Header = reinterpret_cast<const Elf_Ehdr *>(base());
-
- if (Header->e_shoff == 0)
- return;
-
- SectionHeaderTable =
- reinterpret_cast<const Elf_Shdr *>(base() + Header->e_shoff);
- uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
-
- if ((const uint8_t *)SectionHeaderTable + SectionTableSize
- > base() + Data->getBufferSize()) {
- // FIXME: Proper error handling.
- report_fatal_error("Section table goes past end of file!");
- }
-
-
- // To find the symbol tables we walk the section table to find SHT_SYMTAB.
- const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
- const Elf_Shdr* sh = reinterpret_cast<const Elf_Shdr*>(SectionHeaderTable);
- for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
- if (sh->sh_type == ELF::SHT_SYMTAB_SHNDX) {
- if (SymbolTableSectionHeaderIndex)
- // FIXME: Proper error handling.
- report_fatal_error("More than one .symtab_shndx!");
- SymbolTableSectionHeaderIndex = sh;
- }
- 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) {
- SectionRelocMap[getSection(sh->sh_info)].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(getStringTableIndex());
- if (dot_shstrtab_sec) {
- // Verify that the last byte in the string table in a null.
- if (((const char*)base() + dot_shstrtab_sec->sh_offset)
- [dot_shstrtab_sec->sh_size - 1] != 0)
- // FIXME: Proper error handling.
- report_fatal_error("String table must end with a null terminator!");
- }
-
- // Merge this into the above loop.
- for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
- *e = i + getNumSections() * Header->e_shentsize;
- i != e; i += Header->e_shentsize) {
- const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
- if (sh->sh_type == ELF::SHT_STRTAB) {
- StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
- if (SectionName == ".strtab") {
- if (dot_strtab_sec != 0)
- // FIXME: Proper error handling.
- report_fatal_error("Already found section named .strtab!");
- dot_strtab_sec = sh;
- const char *dot_strtab = (const char*)base() + sh->sh_offset;
- if (dot_strtab[sh->sh_size - 1] != 0)
- // FIXME: Proper error handling.
- report_fatal_error("String table must end with a null terminator!");
- }
- }
- }
-
- // Build symbol name side-mapping if there is one.
- if (SymbolTableSectionHeaderIndex) {
- const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
- SymbolTableSectionHeaderIndex->sh_offset);
- error_code ec;
- for (symbol_iterator si = begin_symbols(),
- se = end_symbols(); si != se; si.increment(ec)) {
- if (ec)
- report_fatal_error("Fewer extended symbol table entries than symbols!");
- if (*ShndxTable != ELF::SHN_UNDEF)
- ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
- ++ShndxTable;
- }
- }
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-symbol_iterator ELFObjectFile<target_endianness, is64Bits>
- ::begin_symbols() const {
- DataRefImpl SymbolData;
- memset(&SymbolData, 0, sizeof(SymbolData));
- if (SymbolTableSections.size() == 0) {
- SymbolData.d.a = std::numeric_limits<uint32_t>::max();
- SymbolData.d.b = std::numeric_limits<uint32_t>::max();
- } else {
- SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
- SymbolData.d.b = 0;
- }
- return symbol_iterator(SymbolRef(SymbolData, this));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-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();
- SymbolData.d.b = std::numeric_limits<uint32_t>::max();
- return symbol_iterator(SymbolRef(SymbolData, this));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-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);
- return section_iterator(SectionRef(ret, this));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-section_iterator ELFObjectFile<target_endianness, is64Bits>
- ::end_sections() const {
- DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
- ret.p = reinterpret_cast<intptr_t>(base()
- + Header->e_shoff
- + (Header->e_shentsize*getNumSections()));
- return section_iterator(SectionRef(ret, 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>
-StringRef ELFObjectFile<target_endianness, is64Bits>
- ::getFileFormatName() const {
- switch(Header->e_ident[ELF::EI_CLASS]) {
- case ELF::ELFCLASS32:
- switch(Header->e_machine) {
- case ELF::EM_386:
- return "ELF32-i386";
- case ELF::EM_X86_64:
- return "ELF32-x86-64";
- case ELF::EM_ARM:
- return "ELF32-arm";
- default:
- return "ELF32-unknown";
- }
- case ELF::ELFCLASS64:
- switch(Header->e_machine) {
- case ELF::EM_386:
- return "ELF64-i386";
- case ELF::EM_X86_64:
- return "ELF64-x86-64";
- default:
- return "ELF64-unknown";
- }
- default:
- // FIXME: Proper error handling.
- report_fatal_error("Invalid ELFCLASS!");
- }
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-unsigned ELFObjectFile<target_endianness, is64Bits>::getArch() const {
- switch(Header->e_machine) {
- case ELF::EM_386:
- return Triple::x86;
- case ELF::EM_X86_64:
- return Triple::x86_64;
- case ELF::EM_ARM:
- return Triple::arm;
- default:
- return Triple::UnknownArch;
- }
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-uint64_t ELFObjectFile<target_endianness, is64Bits>::getNumSections() const {
- if (Header->e_shnum == ELF::SHN_UNDEF)
- return SectionHeaderTable->sh_size;
- return Header->e_shnum;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-uint64_t
-ELFObjectFile<target_endianness, is64Bits>::getStringTableIndex() const {
- if (Header->e_shnum == ELF::SHN_UNDEF) {
- if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
- return SectionHeaderTable->sh_link;
- if (Header->e_shstrndx >= getNumSections())
- return 0;
- }
- return Header->e_shstrndx;
-}
-
-
-template<support::endianness target_endianness, bool is64Bits>
-template<typename T>
-inline const T *
-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()
- + 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>(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.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.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 || sec->sh_type != ELF::SHT_DYNSYM)
- // FIXME: Proper error handling.
- report_fatal_error("Invalid symbol table section!");
- return sec;
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
-ELFObjectFile<target_endianness, is64Bits>::getSection(uint32_t index) const {
- if (index == 0)
- return 0;
- if (!SectionHeaderTable || index >= getNumSections())
- // FIXME: Proper error handling.
- report_fatal_error("Invalid section index!");
-
- return reinterpret_cast<const Elf_Shdr *>(
- reinterpret_cast<const char *>(SectionHeaderTable)
- + (index * Header->e_shentsize));
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-const char *ELFObjectFile<target_endianness, is64Bits>
- ::getString(uint32_t section,
- ELF::Elf32_Word offset) const {
- return getString(getSection(section), offset);
-}
-
-template<support::endianness target_endianness, bool is64Bits>
-const char *ELFObjectFile<target_endianness, is64Bits>
- ::getString(const Elf_Shdr *section,
- ELF::Elf32_Word offset) const {
- assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
- if (offset >= section->sh_size)
- // FIXME: Proper error handling.
- report_fatal_error("Symbol name offset outside of string table!");
- 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);
- if (!section)
- Result = "";
+#endif
+ if (MaxAlignment >= 2)
+ R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(
+ Obj, EC, BufferOwned));
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) {
- if (Object->getBufferSize() < ELF::EI_NIDENT)
- return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
- return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
- , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
-}
-
-
-namespace {
- template<support::endianness target_endianness, bool is64Bits>
- class DyldELFObject : public ELFObjectFile<target_endianness, is64Bits> {
- LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
-
- typedef Elf_Shdr_Impl<target_endianness, is64Bits> Elf_Shdr;
- typedef Elf_Sym_Impl<target_endianness, is64Bits> Elf_Sym;
- typedef Elf_Rel_Impl<target_endianness, is64Bits, false> Elf_Rel;
- typedef Elf_Rel_Impl<target_endianness, is64Bits, true> Elf_Rela;
-
- typedef typename ELFObjectFile<target_endianness, is64Bits>::
- Elf_Ehdr Elf_Ehdr;
- Elf_Ehdr *Header;
-
- // Update section headers according to the current location in memory
- virtual void rebaseObject(std::vector<uint8_t*> *MemoryMap);
- // Record memory addresses for cleanup
- virtual void saveAddress(std::vector<uint8_t*> *MemoryMap, uint8_t *addr);
-
- protected:
- virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
-
- public:
- DyldELFObject(MemoryBuffer *Object, std::vector<uint8_t*> *MemoryMap,
- error_code &ec);
-
- // Methods for type inquiry through isa, cast, and dyn_cast
- static inline bool classof(const Binary *v) {
- return (isa<ELFObjectFile<target_endianness, is64Bits> >(v)
- && classof(cast<ELFObjectFile<target_endianness, is64Bits> >(v)));
- }
- static inline bool classof(
- const ELFObjectFile<target_endianness, is64Bits> *v) {
- return v->isDyldType();
- }
- static inline bool classof(const DyldELFObject *v) {
- return true;
- }
- };
-} // end anonymous namespace
-
-template<support::endianness target_endianness, bool is64Bits>
-DyldELFObject<target_endianness, is64Bits>::DyldELFObject(MemoryBuffer *Object,
- std::vector<uint8_t*> *MemoryMap, error_code &ec)
- : ELFObjectFile<target_endianness, is64Bits>(Object, ec)
- , Header(0) {
- this->isDyldELFObject = true;
- Header = const_cast<Elf_Ehdr *>(
- reinterpret_cast<const Elf_Ehdr *>(this->base()));
- if (Header->e_shoff == 0)
- return;
-
- // Mark the image as a dynamic shared library
- Header->e_type = ELF::ET_DYN;
-
- rebaseObject(MemoryMap);
-}
-
-// Walk through the ELF headers, updating virtual addresses to reflect where
-// the object is currently loaded in memory
-template<support::endianness target_endianness, bool is64Bits>
-void DyldELFObject<target_endianness, is64Bits>::rebaseObject(
- std::vector<uint8_t*> *MemoryMap) {
- typedef typename ELFDataTypeTypedefHelper<
- target_endianness, is64Bits>::value_type addr_type;
-
- uint8_t *base_p = const_cast<uint8_t *>(this->base());
- Elf_Shdr *sectionTable =
- reinterpret_cast<Elf_Shdr *>(base_p + Header->e_shoff);
- uint64_t numSections = this->getNumSections();
-
- // Allocate memory space for NOBITS sections (such as .bss), which only exist
- // in memory, but don't occupy space in the object file.
- // Update the address in the section headers to reflect this allocation.
- for (uint64_t index = 0; index < numSections; index++) {
- Elf_Shdr *sec = reinterpret_cast<Elf_Shdr *>(
- reinterpret_cast<char *>(sectionTable) + index * Header->e_shentsize);
-
- // Only update sections that are meant to be present in program memory
- if (sec->sh_flags & ELF::SHF_ALLOC) {
- uint8_t *addr = base_p + sec->sh_offset;
- if (sec->sh_type == ELF::SHT_NOBITS) {
- addr = static_cast<uint8_t *>(calloc(sec->sh_size, 1));
- saveAddress(MemoryMap, addr);
- }
- else {
- // FIXME: Currently memory with RWX permissions is allocated. In the
- // future, make sure that permissions are as necessary
- if (sec->sh_flags & ELF::SHF_WRITE) {
- // see FIXME above
- }
- if (sec->sh_flags & ELF::SHF_EXECINSTR) {
- // see FIXME above
- }
- }
- assert(sizeof(addr_type) == sizeof(intptr_t) &&
- "Cross-architecture ELF dy-load is not supported!");
- sec->sh_addr = static_cast<addr_type>(intptr_t(addr));
- }
- }
-
- // Now allocate actual space for COMMON symbols, which also don't occupy
- // space in the object file.
- // We want to allocate space for all COMMON symbols at once, so the flow is:
- // 1. Go over all symbols, find those that are in COMMON. For each such
- // symbol, record its size and the value field in its symbol header in a
- // special vector.
- // 2. Allocate memory for all COMMON symbols in one fell swoop.
- // 3. Using the recorded information from (1), update the address fields in
- // the symbol headers of the COMMON symbols to reflect their allocated
- // address.
- uint64_t TotalSize = 0;
- std::vector<std::pair<Elf_Addr *, uint64_t> > SymbAddrInfo;
- error_code ec = object_error::success;
- for (symbol_iterator si = this->begin_symbols(),
- se = this->end_symbols(); si != se; si.increment(ec)) {
- uint64_t Size = 0;
- ec = si->getSize(Size);
- Elf_Sym* symb = const_cast<Elf_Sym*>(
- this->getSymbol(si->getRawDataRefImpl()));
- if (ec == object_error::success &&
- this->getSymbolTableIndex(symb) == ELF::SHN_COMMON && Size > 0) {
- SymbAddrInfo.push_back(std::make_pair(&(symb->st_value), Size));
- TotalSize += Size;
- }
- }
-
- uint8_t* SectionPtr = (uint8_t *)calloc(TotalSize, 1);
- saveAddress(MemoryMap, SectionPtr);
-
- typedef typename std::vector<std::pair<Elf_Addr *, uint64_t> >::iterator
- AddrInfoIterator;
- AddrInfoIterator EndIter = SymbAddrInfo.end();
- for (AddrInfoIterator AddrIter = SymbAddrInfo.begin();
- AddrIter != EndIter; ++AddrIter) {
- assert(sizeof(addr_type) == sizeof(intptr_t) &&
- "Cross-architecture ELF dy-load is not supported!");
- *(AddrIter->first) = static_cast<addr_type>(intptr_t(SectionPtr));
- SectionPtr += AddrIter->second;
+ llvm_unreachable("Invalid alignment for ELF file!");
+ else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
+ if (MaxAlignment >= 4)
+ R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC,
+ BufferOwned));
+ else
+#endif
+ if (MaxAlignment >= 2)
+ R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC,
+ BufferOwned));
+ else
+ llvm_unreachable("Invalid alignment for ELF file!");
+ else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
+ if (MaxAlignment >= 8)
+ R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC,
+ BufferOwned));
+ else
+#endif
+ if (MaxAlignment >= 2)
+ R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC,
+ BufferOwned));
+ else
+ llvm_unreachable("Invalid alignment for ELF file!");
+ else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
+ if (MaxAlignment >= 8)
+ R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >(
+ Obj, EC, BufferOwned));
+ else
+#endif
+ if (MaxAlignment >= 2)
+ R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(
+ Obj, EC, BufferOwned));
+ else
+ llvm_unreachable("Invalid alignment for ELF file!");
}
-}
-
-// Record memory addresses for callers
-template<support::endianness target_endianness, bool is64Bits>
-void DyldELFObject<target_endianness, is64Bits>::saveAddress(
- std::vector<uint8_t*> *MemoryMap, uint8_t* addr) {
- if (MemoryMap)
- MemoryMap->push_back(addr);
else
- errs() << "WARNING: Memory leak - cannot record memory for ELF dyld.";
-}
+ report_fatal_error("Buffer is not an ELF object file!");
-template<support::endianness target_endianness, bool is64Bits>
-error_code DyldELFObject<target_endianness, is64Bits>::getSymbolAddress(
- DataRefImpl Symb, uint64_t &Result) const {
- this->validateSymbol(Symb);
- const Elf_Sym *symb = this->getSymbol(Symb);
- if (this->getSymbolTableIndex(symb) == ELF::SHN_COMMON) {
- Result = symb->st_value;
- return object_error::success;
- }
- else {
- return ELFObjectFile<target_endianness, is64Bits>::getSymbolAddress(
- Symb, Result);
- }
+ if (EC)
+ return EC;
+ return R.release();
}
-namespace llvm {
-
- // Creates an in-memory object-file by default: createELFObjectFile(Buffer)
- // Set doDyld to true to create a live (executable/debug-worthy) image
- // If doDyld is true, any memory allocated for non-resident sections and
- // symbols is recorded in MemoryMap.
- ObjectFile *ObjectFile::createELFObjectFile(MemoryBuffer *Object,
- bool doDyld, std::vector<uint8_t *> *MemoryMap) {
- std::pair<unsigned char, unsigned char> Ident = getElfArchType(Object);
- error_code ec;
-
- if (doDyld) {
- if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
- return new DyldELFObject<support::little, false>(Object, MemoryMap, ec);
- else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
- return new DyldELFObject<support::big, false>(Object, MemoryMap, ec);
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
- return new DyldELFObject<support::big, true>(Object, MemoryMap, ec);
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
- DyldELFObject<support::little, true> *result =
- new DyldELFObject<support::little, true>(Object, MemoryMap, ec);
-
- // Unit testing for type inquiry
- assert(isa<Binary>(result) && "Type inquiry failed for ELF object!");
- assert((isa<DyldELFObject<support::little, true> >(result)) &&
- "Type inquiry failed for ELF object!");
- assert((isa<ELFObjectFile<support::little, true> >(result)) &&
- "Type inquiry failed for ELF object!");
- return result;
- }
- }
-
- if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
- return new ELFObjectFile<support::little, false>(Object, ec);
- else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
- return new ELFObjectFile<support::big, false>(Object, ec);
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
- return new ELFObjectFile<support::big, true>(Object, ec);
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
- ELFObjectFile<support::little, true> *result =
- new ELFObjectFile<support::little, true>(Object, ec);
-
- // Unit testing for type inquiry
- assert(isa<Binary>(result) && "Type inquiry failed for ELF object!");
- assert((!isa<DyldELFObject<support::little, true> >(result)) &&
- "Type inquiry failed for ELF object!");
- assert((isa<ELFObjectFile<support::little, true> >(result)) &&
- "Type inquiry failed for ELF object!");
- return result;
- }
-
- report_fatal_error("Buffer is not an ELF object file!");
- }
-
} // end namespace llvm
projects / oota-llvm.git / blobdiff