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a41dce3c64
Currently only implemented for ELF. Patch by Amara Emerson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166918 91177308-0d34-0410-b5e6-96231b3b80d8
2664 lines
103 KiB
C++
2664 lines
103 KiB
C++
//===- ELF.h - ELF object file implementation -------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the ELFObjectFile template class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_ELF_H
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#define LLVM_OBJECT_ELF_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/PointerIntPair.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/ELF.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <limits>
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#include <utility>
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namespace llvm {
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namespace object {
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// Subclasses of ELFObjectFile may need this for template instantiation
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inline std::pair<unsigned char, unsigned char>
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getElfArchType(MemoryBuffer *Object) {
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if (Object->getBufferSize() < ELF::EI_NIDENT)
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return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
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return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
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, (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
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}
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// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
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template<support::endianness target_endianness>
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struct ELFDataTypeTypedefHelperCommon {
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typedef support::detail::packed_endian_specific_integral
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<uint16_t, target_endianness, support::aligned> Elf_Half;
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typedef support::detail::packed_endian_specific_integral
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<uint32_t, target_endianness, support::aligned> Elf_Word;
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typedef support::detail::packed_endian_specific_integral
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<int32_t, target_endianness, support::aligned> Elf_Sword;
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typedef support::detail::packed_endian_specific_integral
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<uint64_t, target_endianness, support::aligned> Elf_Xword;
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typedef support::detail::packed_endian_specific_integral
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<int64_t, target_endianness, support::aligned> Elf_Sxword;
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct ELFDataTypeTypedefHelper;
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/// ELF 32bit types.
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template<support::endianness target_endianness>
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struct ELFDataTypeTypedefHelper<target_endianness, false>
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: ELFDataTypeTypedefHelperCommon<target_endianness> {
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typedef uint32_t value_type;
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typedef support::detail::packed_endian_specific_integral
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<value_type, target_endianness, support::aligned> Elf_Addr;
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typedef support::detail::packed_endian_specific_integral
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<value_type, target_endianness, support::aligned> Elf_Off;
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};
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/// ELF 64bit types.
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template<support::endianness target_endianness>
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struct ELFDataTypeTypedefHelper<target_endianness, true>
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: ELFDataTypeTypedefHelperCommon<target_endianness>{
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typedef uint64_t value_type;
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typedef support::detail::packed_endian_specific_integral
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<value_type, target_endianness, support::aligned> Elf_Addr;
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typedef support::detail::packed_endian_specific_integral
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<value_type, target_endianness, support::aligned> Elf_Off;
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};
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// I really don't like doing this, but the alternative is copypasta.
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#define LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits) \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Addr Elf_Addr; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Off Elf_Off; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Half Elf_Half; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Word Elf_Word; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sword Elf_Sword; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Xword Elf_Xword; \
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typedef typename \
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ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sxword Elf_Sxword;
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// Section header.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Shdr_Base;
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template<support::endianness target_endianness>
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struct Elf_Shdr_Base<target_endianness, false> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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Elf_Word sh_name; // Section name (index into string table)
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Elf_Word sh_type; // Section type (SHT_*)
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Elf_Word sh_flags; // Section flags (SHF_*)
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Elf_Addr sh_addr; // Address where section is to be loaded
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Elf_Off sh_offset; // File offset of section data, in bytes
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Elf_Word sh_size; // Size of section, in bytes
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Elf_Word sh_link; // Section type-specific header table index link
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Elf_Word sh_info; // Section type-specific extra information
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Elf_Word sh_addralign;// Section address alignment
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Elf_Word sh_entsize; // Size of records contained within the section
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};
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template<support::endianness target_endianness>
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struct Elf_Shdr_Base<target_endianness, true> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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Elf_Word sh_name; // Section name (index into string table)
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Elf_Word sh_type; // Section type (SHT_*)
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Elf_Xword sh_flags; // Section flags (SHF_*)
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Elf_Addr sh_addr; // Address where section is to be loaded
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Elf_Off sh_offset; // File offset of section data, in bytes
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Elf_Xword sh_size; // Size of section, in bytes
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Elf_Word sh_link; // Section type-specific header table index link
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Elf_Word sh_info; // Section type-specific extra information
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Elf_Xword sh_addralign;// Section address alignment
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Elf_Xword sh_entsize; // Size of records contained within the section
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Shdr_Impl : Elf_Shdr_Base<target_endianness, is64Bits> {
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using Elf_Shdr_Base<target_endianness, is64Bits>::sh_entsize;
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using Elf_Shdr_Base<target_endianness, is64Bits>::sh_size;
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/// @brief Get the number of entities this section contains if it has any.
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unsigned getEntityCount() const {
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if (sh_entsize == 0)
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return 0;
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return sh_size / sh_entsize;
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}
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Sym_Base;
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template<support::endianness target_endianness>
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struct Elf_Sym_Base<target_endianness, false> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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Elf_Word st_name; // Symbol name (index into string table)
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Elf_Addr st_value; // Value or address associated with the symbol
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Elf_Word st_size; // Size of the symbol
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unsigned char st_info; // Symbol's type and binding attributes
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unsigned char st_other; // Must be zero; reserved
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Elf_Half st_shndx; // Which section (header table index) it's defined in
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};
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template<support::endianness target_endianness>
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struct Elf_Sym_Base<target_endianness, true> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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Elf_Word st_name; // Symbol name (index into string table)
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unsigned char st_info; // Symbol's type and binding attributes
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unsigned char st_other; // Must be zero; reserved
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Elf_Half st_shndx; // Which section (header table index) it's defined in
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Elf_Addr st_value; // Value or address associated with the symbol
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Elf_Xword st_size; // Size of the symbol
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Sym_Impl : Elf_Sym_Base<target_endianness, is64Bits> {
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using Elf_Sym_Base<target_endianness, is64Bits>::st_info;
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// These accessors and mutators correspond to the ELF32_ST_BIND,
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// ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
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unsigned char getBinding() const { return st_info >> 4; }
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unsigned char getType() const { return st_info & 0x0f; }
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void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
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void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
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void setBindingAndType(unsigned char b, unsigned char t) {
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st_info = (b << 4) + (t & 0x0f);
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}
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};
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/// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
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/// (.gnu.version). This structure is identical for ELF32 and ELF64.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Versym_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
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Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Verdaux_Impl;
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/// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
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/// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Verdef_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
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typedef Elf_Verdaux_Impl<target_endianness, is64Bits> Elf_Verdaux;
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Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
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Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
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Elf_Half vd_ndx; // Version index, used in .gnu.version entries
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Elf_Half vd_cnt; // Number of Verdaux entries
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Elf_Word vd_hash; // Hash of name
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Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
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Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
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/// Get the first Verdaux entry for this Verdef.
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const Elf_Verdaux *getAux() const {
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return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
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}
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};
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/// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
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/// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Verdaux_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
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Elf_Word vda_name; // Version name (offset in string table)
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Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
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};
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/// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
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/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Verneed_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
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Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
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Elf_Half vn_cnt; // Number of associated Vernaux entries
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Elf_Word vn_file; // Library name (string table offset)
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Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
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Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
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};
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/// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
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/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Vernaux_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
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Elf_Word vna_hash; // Hash of dependency name
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Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
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Elf_Half vna_other; // Version index, used in .gnu.version entries
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Elf_Word vna_name; // Dependency name
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Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
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};
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/// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
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/// table section (.dynamic) look like.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Dyn_Base;
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template<support::endianness target_endianness>
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struct Elf_Dyn_Base<target_endianness, false> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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Elf_Sword d_tag;
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union {
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Elf_Word d_val;
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Elf_Addr d_ptr;
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} d_un;
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};
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template<support::endianness target_endianness>
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struct Elf_Dyn_Base<target_endianness, true> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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Elf_Sxword d_tag;
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union {
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Elf_Xword d_val;
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Elf_Addr d_ptr;
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} d_un;
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};
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/// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Dyn_Impl : Elf_Dyn_Base<target_endianness, is64Bits> {
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using Elf_Dyn_Base<target_endianness, is64Bits>::d_tag;
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using Elf_Dyn_Base<target_endianness, is64Bits>::d_un;
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int64_t getTag() const { return d_tag; }
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uint64_t getVal() const { return d_un.d_val; }
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uint64_t getPtr() const { return d_un.ptr; }
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};
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template<support::endianness target_endianness, bool is64Bits>
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class ELFObjectFile;
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// DynRefImpl: Reference to an entry in the dynamic table
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// This is an ELF-specific interface.
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template<support::endianness target_endianness, bool is64Bits>
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class DynRefImpl {
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typedef Elf_Dyn_Impl<target_endianness, is64Bits> Elf_Dyn;
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typedef ELFObjectFile<target_endianness, is64Bits> OwningType;
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DataRefImpl DynPimpl;
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const OwningType *OwningObject;
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public:
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DynRefImpl() : OwningObject(NULL) { }
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DynRefImpl(DataRefImpl DynP, const OwningType *Owner);
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bool operator==(const DynRefImpl &Other) const;
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bool operator <(const DynRefImpl &Other) const;
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error_code getNext(DynRefImpl &Result) const;
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int64_t getTag() const;
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uint64_t getVal() const;
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uint64_t getPtr() const;
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DataRefImpl getRawDataRefImpl() const;
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};
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// Elf_Rel: Elf Relocation
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template<support::endianness target_endianness, bool is64Bits, bool isRela>
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struct Elf_Rel_Base;
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template<support::endianness target_endianness>
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struct Elf_Rel_Base<target_endianness, false, false> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
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Elf_Word r_info; // Symbol table index and type of relocation to apply
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};
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template<support::endianness target_endianness>
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struct Elf_Rel_Base<target_endianness, true, false> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
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Elf_Xword r_info; // Symbol table index and type of relocation to apply
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};
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template<support::endianness target_endianness>
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struct Elf_Rel_Base<target_endianness, false, true> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
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Elf_Word r_info; // Symbol table index and type of relocation to apply
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Elf_Sword r_addend; // Compute value for relocatable field by adding this
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};
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template<support::endianness target_endianness>
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struct Elf_Rel_Base<target_endianness, true, true> {
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
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Elf_Xword r_info; // Symbol table index and type of relocation to apply
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Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
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};
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template<support::endianness target_endianness, bool is64Bits, bool isRela>
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struct Elf_Rel_Impl;
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template<support::endianness target_endianness, bool isRela>
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struct Elf_Rel_Impl<target_endianness, true, isRela>
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: Elf_Rel_Base<target_endianness, true, isRela> {
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using Elf_Rel_Base<target_endianness, true, isRela>::r_info;
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LLVM_ELF_IMPORT_TYPES(target_endianness, true)
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// These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
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// and ELF64_R_INFO macros defined in the ELF specification:
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uint64_t getSymbol() const { return (r_info >> 32); }
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unsigned char getType() const {
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return (unsigned char) (r_info & 0xffffffffL);
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}
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void setSymbol(uint64_t s) { setSymbolAndType(s, getType()); }
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void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
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void setSymbolAndType(uint64_t s, unsigned char t) {
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r_info = (s << 32) + (t&0xffffffffL);
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}
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};
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template<support::endianness target_endianness, bool isRela>
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struct Elf_Rel_Impl<target_endianness, false, isRela>
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: Elf_Rel_Base<target_endianness, false, isRela> {
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using Elf_Rel_Base<target_endianness, false, isRela>::r_info;
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LLVM_ELF_IMPORT_TYPES(target_endianness, false)
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// These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
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// and ELF32_R_INFO macros defined in the ELF specification:
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uint32_t getSymbol() const { return (r_info >> 8); }
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unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
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void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
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void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
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void setSymbolAndType(uint32_t s, unsigned char t) {
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r_info = (s << 8) + t;
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}
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};
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template<support::endianness target_endianness, bool is64Bits>
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struct Elf_Ehdr_Impl {
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LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
|
|
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]; }
|
|
};
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
struct Elf_Phdr;
|
|
|
|
template<support::endianness target_endianness>
|
|
struct Elf_Phdr<target_endianness, false> {
|
|
LLVM_ELF_IMPORT_TYPES(target_endianness, false)
|
|
Elf_Word p_type; // Type of segment
|
|
Elf_Off p_offset; // FileOffset where segment is located, in bytes
|
|
Elf_Addr p_vaddr; // Virtual Address of beginning of segment
|
|
Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
|
|
Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
|
|
Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
|
|
Elf_Word p_flags; // Segment flags
|
|
Elf_Word p_align; // Segment alignment constraint
|
|
};
|
|
|
|
template<support::endianness target_endianness>
|
|
struct Elf_Phdr<target_endianness, true> {
|
|
LLVM_ELF_IMPORT_TYPES(target_endianness, true)
|
|
Elf_Word p_type; // Type of segment
|
|
Elf_Word p_flags; // Segment flags
|
|
Elf_Off p_offset; // FileOffset where segment is located, in bytes
|
|
Elf_Addr p_vaddr; // Virtual Address of beginning of segment
|
|
Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
|
|
Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
|
|
Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
|
|
Elf_Word p_align; // Segment alignment constraint
|
|
};
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
class ELFObjectFile : public ObjectFile {
|
|
LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
|
|
|
|
typedef Elf_Ehdr_Impl<target_endianness, is64Bits> Elf_Ehdr;
|
|
typedef Elf_Shdr_Impl<target_endianness, is64Bits> Elf_Shdr;
|
|
typedef Elf_Sym_Impl<target_endianness, is64Bits> Elf_Sym;
|
|
typedef Elf_Dyn_Impl<target_endianness, is64Bits> Elf_Dyn;
|
|
typedef Elf_Rel_Impl<target_endianness, is64Bits, false> Elf_Rel;
|
|
typedef Elf_Rel_Impl<target_endianness, is64Bits, true> Elf_Rela;
|
|
typedef Elf_Verdef_Impl<target_endianness, is64Bits> Elf_Verdef;
|
|
typedef Elf_Verdaux_Impl<target_endianness, is64Bits> Elf_Verdaux;
|
|
typedef Elf_Verneed_Impl<target_endianness, is64Bits> Elf_Verneed;
|
|
typedef Elf_Vernaux_Impl<target_endianness, is64Bits> Elf_Vernaux;
|
|
typedef Elf_Versym_Impl<target_endianness, is64Bits> Elf_Versym;
|
|
typedef DynRefImpl<target_endianness, is64Bits> DynRef;
|
|
typedef content_iterator<DynRef> dyn_iterator;
|
|
|
|
protected:
|
|
// 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.
|
|
const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
|
|
|
|
// SymbolTableSections[0] always points to the dynamic string table section
|
|
// header, or NULL if there is no dynamic string table.
|
|
Sections_t SymbolTableSections;
|
|
IndexMap_t SymbolTableSectionsIndexMap;
|
|
DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
|
|
|
|
const Elf_Shdr *dot_dynamic_sec; // .dynamic
|
|
const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
|
|
const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
|
|
const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
|
|
|
|
// Pointer to SONAME entry in dynamic string table
|
|
// This is set the first time getLoadName is called.
|
|
mutable const char *dt_soname;
|
|
|
|
public:
|
|
/// \brief Iterate over relocations in a .rel or .rela section.
|
|
template<class RelocT>
|
|
class ELFRelocationIterator {
|
|
public:
|
|
typedef void difference_type;
|
|
typedef const RelocT value_type;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
typedef value_type &reference;
|
|
typedef value_type *pointer;
|
|
|
|
/// \brief Default construct iterator.
|
|
ELFRelocationIterator() : Section(0), Current(0) {}
|
|
ELFRelocationIterator(const Elf_Shdr *Sec, const char *Start)
|
|
: Section(Sec)
|
|
, Current(Start) {}
|
|
|
|
reference operator *() {
|
|
assert(Current && "Attempted to dereference an invalid iterator!");
|
|
return *reinterpret_cast<const RelocT*>(Current);
|
|
}
|
|
|
|
pointer operator ->() {
|
|
assert(Current && "Attempted to dereference an invalid iterator!");
|
|
return reinterpret_cast<const RelocT*>(Current);
|
|
}
|
|
|
|
bool operator ==(const ELFRelocationIterator &Other) {
|
|
return Section == Other.Section && Current == Other.Current;
|
|
}
|
|
|
|
bool operator !=(const ELFRelocationIterator &Other) {
|
|
return !(*this == Other);
|
|
}
|
|
|
|
ELFRelocationIterator &operator ++(int) {
|
|
assert(Current && "Attempted to increment an invalid iterator!");
|
|
Current += Section->sh_entsize;
|
|
return *this;
|
|
}
|
|
|
|
ELFRelocationIterator operator ++() {
|
|
ELFRelocationIterator Tmp = *this;
|
|
++*this;
|
|
return Tmp;
|
|
}
|
|
|
|
private:
|
|
const Elf_Shdr *Section;
|
|
const char *Current;
|
|
};
|
|
|
|
private:
|
|
// Records for each version index the corresponding Verdef or Vernaux entry.
|
|
// This is filled the first time LoadVersionMap() is called.
|
|
class VersionMapEntry : public PointerIntPair<const void*, 1> {
|
|
public:
|
|
// If the integer is 0, this is an Elf_Verdef*.
|
|
// If the integer is 1, this is an Elf_Vernaux*.
|
|
VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
|
|
VersionMapEntry(const Elf_Verdef *verdef)
|
|
: PointerIntPair<const void*, 1>(verdef, 0) { }
|
|
VersionMapEntry(const Elf_Vernaux *vernaux)
|
|
: PointerIntPair<const void*, 1>(vernaux, 1) { }
|
|
bool isNull() const { return getPointer() == NULL; }
|
|
bool isVerdef() const { return !isNull() && getInt() == 0; }
|
|
bool isVernaux() const { return !isNull() && getInt() == 1; }
|
|
const Elf_Verdef *getVerdef() const {
|
|
return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
|
|
}
|
|
const Elf_Vernaux *getVernaux() const {
|
|
return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
|
|
}
|
|
};
|
|
mutable SmallVector<VersionMapEntry, 16> VersionMap;
|
|
void LoadVersionDefs(const Elf_Shdr *sec) const;
|
|
void LoadVersionNeeds(const Elf_Shdr *ec) const;
|
|
void LoadVersionMap() const;
|
|
|
|
/// @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 getSymbolVersion(const Elf_Shdr *section,
|
|
const Elf_Sym *Symb,
|
|
StringRef &Version,
|
|
bool &IsDefault) const;
|
|
void VerifyStrTab(const Elf_Shdr *sh) const;
|
|
|
|
protected:
|
|
const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
|
|
void validateSymbol(DataRefImpl Symb) const;
|
|
|
|
public:
|
|
error_code getSymbolName(const Elf_Shdr *section,
|
|
const Elf_Sym *Symb,
|
|
StringRef &Res) const;
|
|
error_code getSectionName(const Elf_Shdr *section,
|
|
StringRef &Res) const;
|
|
const Elf_Dyn *getDyn(DataRefImpl DynData) const;
|
|
error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
|
|
bool &IsDefault) 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 getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
|
|
virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
|
|
virtual error_code getSymbolSection(DataRefImpl Symb,
|
|
section_iterator &Res) const;
|
|
virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
|
|
|
|
friend class DynRefImpl<target_endianness, is64Bits>;
|
|
virtual error_code getDynNext(DataRefImpl DynData, DynRef &Result) const;
|
|
|
|
virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
|
|
virtual error_code getLibraryPath(DataRefImpl Data, StringRef &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 isSectionRequiredForExecution(DataRefImpl Sec,
|
|
bool &Res) const;
|
|
virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
|
|
virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
|
|
virtual error_code isSectionReadOnlyData(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 symbol_iterator begin_dynamic_symbols() const;
|
|
virtual symbol_iterator end_dynamic_symbols() const;
|
|
|
|
virtual section_iterator begin_sections() const;
|
|
virtual section_iterator end_sections() const;
|
|
|
|
virtual library_iterator begin_libraries_needed() const;
|
|
virtual library_iterator end_libraries_needed() const;
|
|
|
|
virtual dyn_iterator begin_dynamic_table() const;
|
|
virtual dyn_iterator end_dynamic_table() const;
|
|
|
|
typedef ELFRelocationIterator<Elf_Rela> Elf_Rela_Iter;
|
|
typedef ELFRelocationIterator<Elf_Rel> Elf_Rel_Iter;
|
|
|
|
virtual Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
|
|
return Elf_Rela_Iter(sec, (const char *)(base() + sec->sh_offset));
|
|
}
|
|
|
|
virtual Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
|
|
return Elf_Rela_Iter(sec, (const char *)
|
|
(base() + sec->sh_offset + sec->sh_size));
|
|
}
|
|
|
|
virtual Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
|
|
return Elf_Rel_Iter(sec, (const char *)(base() + sec->sh_offset));
|
|
}
|
|
|
|
virtual Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
|
|
return Elf_Rel_Iter(sec, (const char *)
|
|
(base() + sec->sh_offset + sec->sh_size));
|
|
}
|
|
|
|
virtual uint8_t getBytesInAddress() const;
|
|
virtual StringRef getFileFormatName() const;
|
|
virtual StringRef getObjectType() const { return "ELF"; }
|
|
virtual unsigned getArch() const;
|
|
virtual StringRef getLoadName() const;
|
|
virtual error_code getSectionContents(const Elf_Shdr *sec,
|
|
StringRef &Res) 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;
|
|
const Elf_Shdr *getElfSection(section_iterator &It) const;
|
|
const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
|
|
const Elf_Sym *getElfSymbol(uint32_t index) 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() == getELFType(target_endianness == support::little,
|
|
is64Bits);
|
|
}
|
|
};
|
|
|
|
// Iterate through the version definitions, and place each Elf_Verdef
|
|
// in the VersionMap according to its index.
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
void ELFObjectFile<target_endianness, is64Bits>::
|
|
LoadVersionDefs(const Elf_Shdr *sec) const {
|
|
unsigned vd_size = sec->sh_size; // Size of section in bytes
|
|
unsigned vd_count = sec->sh_info; // Number of Verdef entries
|
|
const char *sec_start = (const char*)base() + sec->sh_offset;
|
|
const char *sec_end = sec_start + vd_size;
|
|
// The first Verdef entry is at the start of the section.
|
|
const char *p = sec_start;
|
|
for (unsigned i = 0; i < vd_count; i++) {
|
|
if (p + sizeof(Elf_Verdef) > sec_end)
|
|
report_fatal_error("Section ended unexpectedly while scanning "
|
|
"version definitions.");
|
|
const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
|
|
if (vd->vd_version != ELF::VER_DEF_CURRENT)
|
|
report_fatal_error("Unexpected verdef version");
|
|
size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
|
|
if (index >= VersionMap.size())
|
|
VersionMap.resize(index+1);
|
|
VersionMap[index] = VersionMapEntry(vd);
|
|
p += vd->vd_next;
|
|
}
|
|
}
|
|
|
|
// Iterate through the versions needed section, and place each Elf_Vernaux
|
|
// in the VersionMap according to its index.
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
void ELFObjectFile<target_endianness, is64Bits>::
|
|
LoadVersionNeeds(const Elf_Shdr *sec) const {
|
|
unsigned vn_size = sec->sh_size; // Size of section in bytes
|
|
unsigned vn_count = sec->sh_info; // Number of Verneed entries
|
|
const char *sec_start = (const char*)base() + sec->sh_offset;
|
|
const char *sec_end = sec_start + vn_size;
|
|
// The first Verneed entry is at the start of the section.
|
|
const char *p = sec_start;
|
|
for (unsigned i = 0; i < vn_count; i++) {
|
|
if (p + sizeof(Elf_Verneed) > sec_end)
|
|
report_fatal_error("Section ended unexpectedly while scanning "
|
|
"version needed records.");
|
|
const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
|
|
if (vn->vn_version != ELF::VER_NEED_CURRENT)
|
|
report_fatal_error("Unexpected verneed version");
|
|
// Iterate through the Vernaux entries
|
|
const char *paux = p + vn->vn_aux;
|
|
for (unsigned j = 0; j < vn->vn_cnt; j++) {
|
|
if (paux + sizeof(Elf_Vernaux) > sec_end)
|
|
report_fatal_error("Section ended unexpected while scanning auxiliary "
|
|
"version needed records.");
|
|
const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
|
|
size_t index = vna->vna_other & ELF::VERSYM_VERSION;
|
|
if (index >= VersionMap.size())
|
|
VersionMap.resize(index+1);
|
|
VersionMap[index] = VersionMapEntry(vna);
|
|
paux += vna->vna_next;
|
|
}
|
|
p += vn->vn_next;
|
|
}
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
void ELFObjectFile<target_endianness, is64Bits>::LoadVersionMap() const {
|
|
// If there is no dynamic symtab or version table, there is nothing to do.
|
|
if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
|
|
return;
|
|
|
|
// Has the VersionMap already been loaded?
|
|
if (VersionMap.size() > 0)
|
|
return;
|
|
|
|
// The first two version indexes are reserved.
|
|
// Index 0 is LOCAL, index 1 is GLOBAL.
|
|
VersionMap.push_back(VersionMapEntry());
|
|
VersionMap.push_back(VersionMapEntry());
|
|
|
|
if (dot_gnu_version_d_sec)
|
|
LoadVersionDefs(dot_gnu_version_d_sec);
|
|
|
|
if (dot_gnu_version_r_sec)
|
|
LoadVersionNeeds(dot_gnu_version_r_sec);
|
|
}
|
|
|
|
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.
|
|
// If the symbol table is .dynsym, we are iterating dynamic symbols,
|
|
// and there is only one table of these.
|
|
if (Symb.d.b != 0) {
|
|
++Symb.d.b;
|
|
Symb.d.a = 1; // The 0th symbol in ELF is fake.
|
|
}
|
|
// Otherwise return the terminator.
|
|
if (Symb.d.b == 0 || 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(SymbolTableSections[Symb.d.b], symb, Result);
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getSymbolVersion(SymbolRef SymRef,
|
|
StringRef &Version,
|
|
bool &IsDefault) const {
|
|
DataRefImpl Symb = SymRef.getRawDataRefImpl();
|
|
validateSymbol(Symb);
|
|
const Elf_Sym *symb = getSymbol(Symb);
|
|
return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
|
|
Version, IsDefault);
|
|
}
|
|
|
|
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>
|
|
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
|
|
ELFObjectFile<target_endianness, is64Bits>
|
|
::getElfSection(section_iterator &It) const {
|
|
llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
|
|
return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
|
|
ELFObjectFile<target_endianness, is64Bits>
|
|
::getElfSymbol(symbol_iterator &It) const {
|
|
return getSymbol(It->getRawDataRefImpl());
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
|
|
ELFObjectFile<target_endianness, is64Bits>
|
|
::getElfSymbol(uint32_t index) const {
|
|
DataRefImpl SymbolData;
|
|
SymbolData.d.a = index;
|
|
SymbolData.d.b = 1;
|
|
return getSymbol(SymbolData);
|
|
}
|
|
|
|
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:
|
|
bool IsRelocatable;
|
|
switch(Header->e_type) {
|
|
case ELF::ET_EXEC:
|
|
case ELF::ET_DYN:
|
|
IsRelocatable = false;
|
|
break;
|
|
default:
|
|
IsRelocatable = true;
|
|
}
|
|
Result = symb->st_value;
|
|
if (IsRelocatable && Section != 0)
|
|
Result += Section->sh_addr;
|
|
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';
|
|
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);
|
|
|
|
switch (symb->getType()) {
|
|
case ELF::STT_NOTYPE:
|
|
Result = SymbolRef::ST_Unknown;
|
|
break;
|
|
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:
|
|
case ELF::STT_COMMON:
|
|
case ELF::STT_TLS:
|
|
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>
|
|
::getSymbolFlags(DataRefImpl Symb,
|
|
uint32_t &Result) const {
|
|
validateSymbol(Symb);
|
|
const Elf_Sym *symb = getSymbol(Symb);
|
|
|
|
Result = SymbolRef::SF_None;
|
|
|
|
if (symb->getBinding() != ELF::STB_LOCAL)
|
|
Result |= SymbolRef::SF_Global;
|
|
|
|
if (symb->getBinding() == ELF::STB_WEAK)
|
|
Result |= SymbolRef::SF_Weak;
|
|
|
|
if (symb->st_shndx == ELF::SHN_ABS)
|
|
Result |= SymbolRef::SF_Absolute;
|
|
|
|
if (symb->getType() == ELF::STT_FILE ||
|
|
symb->getType() == ELF::STT_SECTION)
|
|
Result |= SymbolRef::SF_FormatSpecific;
|
|
|
|
if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
|
|
Result |= SymbolRef::SF_Undefined;
|
|
|
|
if (symb->getType() == ELF::STT_COMMON ||
|
|
getSymbolTableIndex(symb) == ELF::SHN_COMMON)
|
|
Result |= SymbolRef::SF_Common;
|
|
|
|
if (symb->getType() == ELF::STT_TLS)
|
|
Result |= SymbolRef::SF_ThreadLocal;
|
|
|
|
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>
|
|
::getSymbolValue(DataRefImpl Symb,
|
|
uint64_t &Val) const {
|
|
validateSymbol(Symb);
|
|
const Elf_Sym *symb = getSymbol(Symb);
|
|
Val = symb->st_value;
|
|
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>
|
|
::getSectionContents(const Elf_Shdr *Sec,
|
|
StringRef &Result) const {
|
|
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>
|
|
::isSectionRequiredForExecution(DataRefImpl Sec,
|
|
bool &Result) const {
|
|
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
|
|
if (sec->sh_flags & ELF::SHF_ALLOC)
|
|
Result = true;
|
|
else
|
|
Result = false;
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::isSectionVirtual(DataRefImpl Sec,
|
|
bool &Result) const {
|
|
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
|
|
if (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>
|
|
::isSectionZeroInit(DataRefImpl Sec,
|
|
bool &Result) const {
|
|
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
|
|
// For ELF, all zero-init sections are virtual (that is, they occupy no space
|
|
// in the object image) and vice versa.
|
|
if (sec->sh_flags & 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>
|
|
::isSectionReadOnlyData(DataRefImpl Sec,
|
|
bool &Result) const {
|
|
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
|
|
if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
|
|
Result = false;
|
|
else
|
|
Result = true;
|
|
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;
|
|
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;
|
|
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;
|
|
case ELF::EM_ARM:
|
|
switch (type) {
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
|
|
default:
|
|
res = "Unknown";
|
|
}
|
|
break;
|
|
case ELF::EM_HEXAGON:
|
|
switch (type) {
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
|
|
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
|
|
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(getSection(sec->sh_link), symb, symname))
|
|
return ec;
|
|
switch (Header->e_machine) {
|
|
case ELF::EM_X86_64:
|
|
switch (type) {
|
|
case ELF::R_X86_64_PC8:
|
|
case ELF::R_X86_64_PC16:
|
|
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;
|
|
case ELF::R_X86_64_8:
|
|
case ELF::R_X86_64_16:
|
|
case ELF::R_X86_64_32:
|
|
case ELF::R_X86_64_32S:
|
|
case ELF::R_X86_64_64: {
|
|
std::string fmtbuf;
|
|
raw_string_ostream fmt(fmtbuf);
|
|
fmt << symname << (addend < 0 ? "" : "+") << addend;
|
|
fmt.flush();
|
|
Result.append(fmtbuf.begin(), fmtbuf.end());
|
|
}
|
|
break;
|
|
default:
|
|
res = "Unknown";
|
|
}
|
|
break;
|
|
case ELF::EM_ARM:
|
|
case ELF::EM_HEXAGON:
|
|
res = symname;
|
|
break;
|
|
default:
|
|
res = "Unknown";
|
|
}
|
|
if (Result.empty())
|
|
Result.append(res.begin(), res.end());
|
|
return object_error::success;
|
|
}
|
|
|
|
// Verify that the last byte in the string table in a null.
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
void ELFObjectFile<target_endianness, is64Bits>
|
|
::VerifyStrTab(const Elf_Shdr *sh) const {
|
|
const char *strtab = (const char*)base() + sh->sh_offset;
|
|
if (strtab[sh->sh_size - 1] != 0)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("String table must end with a null terminator!");
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
|
|
, error_code &ec)
|
|
: ObjectFile(getELFType(target_endianness == support::little, is64Bits),
|
|
Object, ec)
|
|
, isDyldELFObject(false)
|
|
, SectionHeaderTable(0)
|
|
, dot_shstrtab_sec(0)
|
|
, dot_strtab_sec(0)
|
|
, dot_dynstr_sec(0)
|
|
, dot_dynamic_sec(0)
|
|
, dot_gnu_version_sec(0)
|
|
, dot_gnu_version_r_sec(0)
|
|
, dot_gnu_version_d_sec(0)
|
|
, dt_soname(0)
|
|
{
|
|
|
|
const uint64_t FileSize = Data->getBufferSize();
|
|
|
|
if (sizeof(Elf_Ehdr) > FileSize)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("File too short!");
|
|
|
|
Header = reinterpret_cast<const Elf_Ehdr *>(base());
|
|
|
|
if (Header->e_shoff == 0)
|
|
return;
|
|
|
|
const uint64_t SectionTableOffset = Header->e_shoff;
|
|
|
|
if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("Section header table goes past end of file!");
|
|
|
|
// The getNumSections() call below depends on SectionHeaderTable being set.
|
|
SectionHeaderTable =
|
|
reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
|
|
const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
|
|
|
|
if (SectionTableOffset + SectionTableSize > FileSize)
|
|
// 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 = SectionHeaderTable;
|
|
|
|
// Reserve SymbolTableSections[0] for .dynsym
|
|
SymbolTableSections.push_back(NULL);
|
|
|
|
for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
|
|
switch (sh->sh_type) {
|
|
case ELF::SHT_SYMTAB_SHNDX: {
|
|
if (SymbolTableSectionHeaderIndex)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .symtab_shndx!");
|
|
SymbolTableSectionHeaderIndex = sh;
|
|
break;
|
|
}
|
|
case ELF::SHT_SYMTAB: {
|
|
SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
|
|
SymbolTableSections.push_back(sh);
|
|
break;
|
|
}
|
|
case ELF::SHT_DYNSYM: {
|
|
if (SymbolTableSections[0] != NULL)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .dynsym!");
|
|
SymbolTableSectionsIndexMap[i] = 0;
|
|
SymbolTableSections[0] = sh;
|
|
break;
|
|
}
|
|
case ELF::SHT_REL:
|
|
case ELF::SHT_RELA: {
|
|
SectionRelocMap[getSection(sh->sh_info)].push_back(i);
|
|
break;
|
|
}
|
|
case ELF::SHT_DYNAMIC: {
|
|
if (dot_dynamic_sec != NULL)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .dynamic!");
|
|
dot_dynamic_sec = sh;
|
|
break;
|
|
}
|
|
case ELF::SHT_GNU_versym: {
|
|
if (dot_gnu_version_sec != NULL)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .gnu.version section!");
|
|
dot_gnu_version_sec = sh;
|
|
break;
|
|
}
|
|
case ELF::SHT_GNU_verdef: {
|
|
if (dot_gnu_version_d_sec != NULL)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .gnu.version_d section!");
|
|
dot_gnu_version_d_sec = sh;
|
|
break;
|
|
}
|
|
case ELF::SHT_GNU_verneed: {
|
|
if (dot_gnu_version_r_sec != NULL)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("More than one .gnu.version_r section!");
|
|
dot_gnu_version_r_sec = sh;
|
|
break;
|
|
}
|
|
}
|
|
++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.
|
|
VerifyStrTab(dot_shstrtab_sec);
|
|
}
|
|
|
|
// 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;
|
|
VerifyStrTab(dot_strtab_sec);
|
|
} else if (SectionName == ".dynstr") {
|
|
if (dot_dynstr_sec != 0)
|
|
// FIXME: Proper error handling.
|
|
report_fatal_error("Already found section named .dynstr!");
|
|
dot_dynstr_sec = sh;
|
|
VerifyStrTab(dot_dynstr_sec);
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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;
|
|
if (SymbolTableSections.size() <= 1) {
|
|
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 = 1; // The 0th table is .dynsym
|
|
}
|
|
return symbol_iterator(SymbolRef(SymbolData, this));
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
|
|
::end_symbols() const {
|
|
DataRefImpl 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>
|
|
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
|
|
::begin_dynamic_symbols() const {
|
|
DataRefImpl SymbolData;
|
|
if (SymbolTableSections[0] == NULL) {
|
|
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; // The 0th table is .dynsym
|
|
}
|
|
return symbol_iterator(SymbolRef(SymbolData, this));
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
|
|
::end_dynamic_symbols() const {
|
|
DataRefImpl 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;
|
|
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;
|
|
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>
|
|
typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
|
|
ELFObjectFile<target_endianness, is64Bits>::begin_dynamic_table() const {
|
|
DataRefImpl DynData;
|
|
if (dot_dynamic_sec == NULL || dot_dynamic_sec->sh_size == 0) {
|
|
DynData.d.a = std::numeric_limits<uint32_t>::max();
|
|
} else {
|
|
DynData.d.a = 0;
|
|
}
|
|
return dyn_iterator(DynRef(DynData, this));
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
|
|
ELFObjectFile<target_endianness, is64Bits>
|
|
::end_dynamic_table() const {
|
|
DataRefImpl DynData;
|
|
DynData.d.a = std::numeric_limits<uint32_t>::max();
|
|
return dyn_iterator(DynRef(DynData, this));
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getDynNext(DataRefImpl DynData,
|
|
DynRef &Result) const {
|
|
++DynData.d.a;
|
|
|
|
// Check to see if we are at the end of .dynamic
|
|
if (DynData.d.a >= dot_dynamic_sec->getEntityCount()) {
|
|
// We are at the end. Return the terminator.
|
|
DynData.d.a = std::numeric_limits<uint32_t>::max();
|
|
}
|
|
|
|
Result = DynRef(DynData, this);
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
StringRef
|
|
ELFObjectFile<target_endianness, is64Bits>::getLoadName() const {
|
|
if (!dt_soname) {
|
|
// Find the DT_SONAME entry
|
|
dyn_iterator it = begin_dynamic_table();
|
|
dyn_iterator ie = end_dynamic_table();
|
|
error_code ec;
|
|
while (it != ie) {
|
|
if (it->getTag() == ELF::DT_SONAME)
|
|
break;
|
|
it.increment(ec);
|
|
if (ec)
|
|
report_fatal_error("dynamic table iteration failed");
|
|
}
|
|
if (it != ie) {
|
|
if (dot_dynstr_sec == NULL)
|
|
report_fatal_error("Dynamic string table is missing");
|
|
dt_soname = getString(dot_dynstr_sec, it->getVal());
|
|
} else {
|
|
dt_soname = "";
|
|
}
|
|
}
|
|
return dt_soname;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
library_iterator ELFObjectFile<target_endianness, is64Bits>
|
|
::begin_libraries_needed() const {
|
|
// Find the first DT_NEEDED entry
|
|
dyn_iterator i = begin_dynamic_table();
|
|
dyn_iterator e = end_dynamic_table();
|
|
error_code ec;
|
|
while (i != e) {
|
|
if (i->getTag() == ELF::DT_NEEDED)
|
|
break;
|
|
i.increment(ec);
|
|
if (ec)
|
|
report_fatal_error("dynamic table iteration failed");
|
|
}
|
|
// Use the same DataRefImpl format as DynRef.
|
|
return library_iterator(LibraryRef(i->getRawDataRefImpl(), this));
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getLibraryNext(DataRefImpl Data,
|
|
LibraryRef &Result) const {
|
|
// Use the same DataRefImpl format as DynRef.
|
|
dyn_iterator i = dyn_iterator(DynRef(Data, this));
|
|
dyn_iterator e = end_dynamic_table();
|
|
|
|
// Skip the current dynamic table entry.
|
|
error_code ec;
|
|
if (i != e) {
|
|
i.increment(ec);
|
|
// TODO: proper error handling
|
|
if (ec)
|
|
report_fatal_error("dynamic table iteration failed");
|
|
}
|
|
|
|
// Find the next DT_NEEDED entry.
|
|
while (i != e) {
|
|
if (i->getTag() == ELF::DT_NEEDED)
|
|
break;
|
|
i.increment(ec);
|
|
if (ec)
|
|
report_fatal_error("dynamic table iteration failed");
|
|
}
|
|
Result = LibraryRef(i->getRawDataRefImpl(), this);
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getLibraryPath(DataRefImpl Data, StringRef &Res) const {
|
|
dyn_iterator i = dyn_iterator(DynRef(Data, this));
|
|
if (i == end_dynamic_table())
|
|
report_fatal_error("getLibraryPath() called on iterator end");
|
|
|
|
if (i->getTag() != ELF::DT_NEEDED)
|
|
report_fatal_error("Invalid library_iterator");
|
|
|
|
// This uses .dynstr to lookup the name of the DT_NEEDED entry.
|
|
// THis works as long as DT_STRTAB == .dynstr. This is true most of
|
|
// the time, but the specification allows exceptions.
|
|
// TODO: This should really use DT_STRTAB instead. Doing this requires
|
|
// reading the program headers.
|
|
if (dot_dynstr_sec == NULL)
|
|
report_fatal_error("Dynamic string table is missing");
|
|
Res = getString(dot_dynstr_sec, i->getVal());
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
library_iterator ELFObjectFile<target_endianness, is64Bits>
|
|
::end_libraries_needed() const {
|
|
dyn_iterator e = end_dynamic_table();
|
|
// Use the same DataRefImpl format as DynRef.
|
|
return library_iterator(LibraryRef(e->getRawDataRefImpl(), 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";
|
|
case ELF::EM_HEXAGON:
|
|
return "ELF32-hexagon";
|
|
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";
|
|
case ELF::EM_PPC64:
|
|
return "ELF64-ppc64";
|
|
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;
|
|
case ELF::EM_HEXAGON:
|
|
return Triple::hexagon;
|
|
case ELF::EM_MIPS:
|
|
return (target_endianness == support::little) ?
|
|
Triple::mipsel : Triple::mips;
|
|
case ELF::EM_PPC64:
|
|
return Triple::ppc64;
|
|
default:
|
|
return Triple::UnknownArch;
|
|
}
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
uint64_t ELFObjectFile<target_endianness, is64Bits>::getNumSections() const {
|
|
assert(Header && "Header not initialized!");
|
|
if (Header->e_shnum == ELF::SHN_UNDEF) {
|
|
assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
|
|
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_Dyn *
|
|
ELFObjectFile<target_endianness, is64Bits>::getDyn(DataRefImpl DynData) const {
|
|
return getEntry<Elf_Dyn>(dot_dynamic_sec, DynData.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_Shdr *section,
|
|
const Elf_Sym *symb,
|
|
StringRef &Result) const {
|
|
if (symb->st_name == 0) {
|
|
const Elf_Shdr *section = getSection(symb);
|
|
if (!section)
|
|
Result = "";
|
|
else
|
|
Result = getString(dot_shstrtab_sec, section->sh_name);
|
|
return object_error::success;
|
|
}
|
|
|
|
if (section == SymbolTableSections[0]) {
|
|
// Symbol is in .dynsym, use .dynstr string table
|
|
Result = getString(dot_dynstr_sec, symb->st_name);
|
|
} else {
|
|
// Use the default symbol table name section.
|
|
Result = getString(dot_strtab_sec, symb->st_name);
|
|
}
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getSectionName(const Elf_Shdr *section,
|
|
StringRef &Result) const {
|
|
Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
error_code ELFObjectFile<target_endianness, is64Bits>
|
|
::getSymbolVersion(const Elf_Shdr *section,
|
|
const Elf_Sym *symb,
|
|
StringRef &Version,
|
|
bool &IsDefault) const {
|
|
// Handle non-dynamic symbols.
|
|
if (section != SymbolTableSections[0]) {
|
|
// Non-dynamic symbols can have versions in their names
|
|
// A name of the form 'foo@V1' indicates version 'V1', non-default.
|
|
// A name of the form 'foo@@V2' indicates version 'V2', default version.
|
|
StringRef Name;
|
|
error_code ec = getSymbolName(section, symb, Name);
|
|
if (ec != object_error::success)
|
|
return ec;
|
|
size_t atpos = Name.find('@');
|
|
if (atpos == StringRef::npos) {
|
|
Version = "";
|
|
IsDefault = false;
|
|
return object_error::success;
|
|
}
|
|
++atpos;
|
|
if (atpos < Name.size() && Name[atpos] == '@') {
|
|
IsDefault = true;
|
|
++atpos;
|
|
} else {
|
|
IsDefault = false;
|
|
}
|
|
Version = Name.substr(atpos);
|
|
return object_error::success;
|
|
}
|
|
|
|
// This is a dynamic symbol. Look in the GNU symbol version table.
|
|
if (dot_gnu_version_sec == NULL) {
|
|
// No version table.
|
|
Version = "";
|
|
IsDefault = false;
|
|
return object_error::success;
|
|
}
|
|
|
|
// Determine the position in the symbol table of this entry.
|
|
const char *sec_start = (const char*)base() + section->sh_offset;
|
|
size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
|
|
|
|
// Get the corresponding version index entry
|
|
const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
|
|
size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
|
|
|
|
// Special markers for unversioned symbols.
|
|
if (version_index == ELF::VER_NDX_LOCAL ||
|
|
version_index == ELF::VER_NDX_GLOBAL) {
|
|
Version = "";
|
|
IsDefault = false;
|
|
return object_error::success;
|
|
}
|
|
|
|
// Lookup this symbol in the version table
|
|
LoadVersionMap();
|
|
if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
|
|
report_fatal_error("Symbol has version index without corresponding "
|
|
"define or reference entry");
|
|
const VersionMapEntry &entry = VersionMap[version_index];
|
|
|
|
// Get the version name string
|
|
size_t name_offset;
|
|
if (entry.isVerdef()) {
|
|
// The first Verdaux entry holds the name.
|
|
name_offset = entry.getVerdef()->getAux()->vda_name;
|
|
} else {
|
|
name_offset = entry.getVernaux()->vna_name;
|
|
}
|
|
Version = getString(dot_dynstr_sec, name_offset);
|
|
|
|
// Set IsDefault
|
|
if (entry.isVerdef()) {
|
|
IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
|
|
} else {
|
|
IsDefault = false;
|
|
}
|
|
|
|
return object_error::success;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline DynRefImpl<target_endianness, is64Bits>
|
|
::DynRefImpl(DataRefImpl DynP, const OwningType *Owner)
|
|
: DynPimpl(DynP)
|
|
, OwningObject(Owner) {}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline bool DynRefImpl<target_endianness, is64Bits>
|
|
::operator==(const DynRefImpl &Other) const {
|
|
return DynPimpl == Other.DynPimpl;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline bool DynRefImpl<target_endianness, is64Bits>
|
|
::operator <(const DynRefImpl &Other) const {
|
|
return DynPimpl < Other.DynPimpl;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline error_code DynRefImpl<target_endianness, is64Bits>
|
|
::getNext(DynRefImpl &Result) const {
|
|
return OwningObject->getDynNext(DynPimpl, Result);
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline int64_t DynRefImpl<target_endianness, is64Bits>
|
|
::getTag() const {
|
|
return OwningObject->getDyn(DynPimpl)->d_tag;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline uint64_t DynRefImpl<target_endianness, is64Bits>
|
|
::getVal() const {
|
|
return OwningObject->getDyn(DynPimpl)->d_un.d_val;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline uint64_t DynRefImpl<target_endianness, is64Bits>
|
|
::getPtr() const {
|
|
return OwningObject->getDyn(DynPimpl)->d_un.d_ptr;
|
|
}
|
|
|
|
template<support::endianness target_endianness, bool is64Bits>
|
|
inline DataRefImpl DynRefImpl<target_endianness, is64Bits>
|
|
::getRawDataRefImpl() const {
|
|
return DynPimpl;
|
|
}
|
|
|
|
/// This is a generic interface for retrieving GNU symbol version
|
|
/// information from an ELFObjectFile.
|
|
static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
|
|
const SymbolRef &Sym,
|
|
StringRef &Version,
|
|
bool &IsDefault) {
|
|
// Little-endian 32-bit
|
|
if (const ELFObjectFile<support::little, false> *ELFObj =
|
|
dyn_cast<ELFObjectFile<support::little, false> >(Obj))
|
|
return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
|
|
|
|
// Big-endian 32-bit
|
|
if (const ELFObjectFile<support::big, false> *ELFObj =
|
|
dyn_cast<ELFObjectFile<support::big, false> >(Obj))
|
|
return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
|
|
|
|
// Little-endian 64-bit
|
|
if (const ELFObjectFile<support::little, true> *ELFObj =
|
|
dyn_cast<ELFObjectFile<support::little, true> >(Obj))
|
|
return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
|
|
|
|
// Big-endian 64-bit
|
|
if (const ELFObjectFile<support::big, true> *ELFObj =
|
|
dyn_cast<ELFObjectFile<support::big, true> >(Obj))
|
|
return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
|
|
|
|
llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|