1 files changed, 0 insertions, 587 deletions

diff --git a/contrib/llvm/lib/Object/ELF.cpp b/contrib/llvm/lib/Object/ELF.cpp
deleted file mode 100644
index 8660b1a64bdd..000000000000
--- a/contrib/llvm/lib/Object/ELF.cpp
+++ /dev/null
@@ -1,587 +0,0 @@
-//===- ELF.cpp - ELF object file implementation ---------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Object/ELF.h"
-#include "llvm/BinaryFormat/ELF.h"
-#include "llvm/Support/LEB128.h"
-
-using namespace llvm;
-using namespace object;
-
-#define STRINGIFY_ENUM_CASE(ns, name)                                          \
-  case ns::name:                                                               \
-    return #name;
-
-#define ELF_RELOC(name, value) STRINGIFY_ENUM_CASE(ELF, name)
-
-StringRef llvm::object::getELFRelocationTypeName(uint32_t Machine,
-                                                 uint32_t Type) {
-  switch (Machine) {
-  case ELF::EM_X86_64:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/x86_64.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_386:
-  case ELF::EM_IAMCU:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/i386.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_MIPS:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/Mips.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_AARCH64:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/AArch64.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_ARM:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/ARM.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_ARC_COMPACT:
-  case ELF::EM_ARC_COMPACT2:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/ARC.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_AVR:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/AVR.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_HEXAGON:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/Hexagon.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_LANAI:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/Lanai.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_PPC:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/PowerPC.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_PPC64:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/PowerPC64.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_RISCV:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/RISCV.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_S390:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/SystemZ.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_SPARC:
-  case ELF::EM_SPARC32PLUS:
-  case ELF::EM_SPARCV9:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/Sparc.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_AMDGPU:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/AMDGPU.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_BPF:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/BPF.def"
-    default:
-      break;
-    }
-    break;
-  case ELF::EM_MSP430:
-    switch (Type) {
-#include "llvm/BinaryFormat/ELFRelocs/MSP430.def"
-    default:
-      break;
-    }
-    break;
-  default:
-    break;
-  }
-  return "Unknown";
-}
-
-#undef ELF_RELOC
-
-uint32_t llvm::object::getELFRelativeRelocationType(uint32_t Machine) {
-  switch (Machine) {
-  case ELF::EM_X86_64:
-    return ELF::R_X86_64_RELATIVE;
-  case ELF::EM_386:
-  case ELF::EM_IAMCU:
-    return ELF::R_386_RELATIVE;
-  case ELF::EM_MIPS:
-    break;
-  case ELF::EM_AARCH64:
-    return ELF::R_AARCH64_RELATIVE;
-  case ELF::EM_ARM:
-    return ELF::R_ARM_RELATIVE;
-  case ELF::EM_ARC_COMPACT:
-  case ELF::EM_ARC_COMPACT2:
-    return ELF::R_ARC_RELATIVE;
-  case ELF::EM_AVR:
-    break;
-  case ELF::EM_HEXAGON:
-    return ELF::R_HEX_RELATIVE;
-  case ELF::EM_LANAI:
-    break;
-  case ELF::EM_PPC:
-    break;
-  case ELF::EM_PPC64:
-    return ELF::R_PPC64_RELATIVE;
-  case ELF::EM_RISCV:
-    return ELF::R_RISCV_RELATIVE;
-  case ELF::EM_S390:
-    return ELF::R_390_RELATIVE;
-  case ELF::EM_SPARC:
-  case ELF::EM_SPARC32PLUS:
-  case ELF::EM_SPARCV9:
-    return ELF::R_SPARC_RELATIVE;
-  case ELF::EM_AMDGPU:
-    break;
-  case ELF::EM_BPF:
-    break;
-  default:
-    break;
-  }
-  return 0;
-}
-
-StringRef llvm::object::getELFSectionTypeName(uint32_t Machine, unsigned Type) {
-  switch (Machine) {
-  case ELF::EM_ARM:
-    switch (Type) {
-      STRINGIFY_ENUM_CASE(ELF, SHT_ARM_EXIDX);
-      STRINGIFY_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
-      STRINGIFY_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
-      STRINGIFY_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
-      STRINGIFY_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
-    }
-    break;
-  case ELF::EM_HEXAGON:
-    switch (Type) { STRINGIFY_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
-    break;
-  case ELF::EM_X86_64:
-    switch (Type) { STRINGIFY_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
-    break;
-  case ELF::EM_MIPS:
-  case ELF::EM_MIPS_RS3_LE:
-    switch (Type) {
-      STRINGIFY_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
-      STRINGIFY_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
-      STRINGIFY_ENUM_CASE(ELF, SHT_MIPS_DWARF);
-      STRINGIFY_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS);
-    }
-    break;
-  default:
-    break;
-  }
-
-  switch (Type) {
-    STRINGIFY_ENUM_CASE(ELF, SHT_NULL);
-    STRINGIFY_ENUM_CASE(ELF, SHT_PROGBITS);
-    STRINGIFY_ENUM_CASE(ELF, SHT_SYMTAB);
-    STRINGIFY_ENUM_CASE(ELF, SHT_STRTAB);
-    STRINGIFY_ENUM_CASE(ELF, SHT_RELA);
-    STRINGIFY_ENUM_CASE(ELF, SHT_HASH);
-    STRINGIFY_ENUM_CASE(ELF, SHT_DYNAMIC);
-    STRINGIFY_ENUM_CASE(ELF, SHT_NOTE);
-    STRINGIFY_ENUM_CASE(ELF, SHT_NOBITS);
-    STRINGIFY_ENUM_CASE(ELF, SHT_REL);
-    STRINGIFY_ENUM_CASE(ELF, SHT_SHLIB);
-    STRINGIFY_ENUM_CASE(ELF, SHT_DYNSYM);
-    STRINGIFY_ENUM_CASE(ELF, SHT_INIT_ARRAY);
-    STRINGIFY_ENUM_CASE(ELF, SHT_FINI_ARRAY);
-    STRINGIFY_ENUM_CASE(ELF, SHT_PREINIT_ARRAY);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GROUP);
-    STRINGIFY_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX);
-    STRINGIFY_ENUM_CASE(ELF, SHT_RELR);
-    STRINGIFY_ENUM_CASE(ELF, SHT_ANDROID_REL);
-    STRINGIFY_ENUM_CASE(ELF, SHT_ANDROID_RELA);
-    STRINGIFY_ENUM_CASE(ELF, SHT_ANDROID_RELR);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_ODRTAB);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_LINKER_OPTIONS);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_CALL_GRAPH_PROFILE);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_ADDRSIG);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_DEPENDENT_LIBRARIES);
-    STRINGIFY_ENUM_CASE(ELF, SHT_LLVM_SYMPART);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GNU_HASH);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GNU_verdef);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GNU_verneed);
-    STRINGIFY_ENUM_CASE(ELF, SHT_GNU_versym);
-  default:
-    return "Unknown";
-  }
-}
-
-template <class ELFT>
-Expected<std::vector<typename ELFT::Rela>>
-ELFFile<ELFT>::decode_relrs(Elf_Relr_Range relrs) const {
-  // This function decodes the contents of an SHT_RELR packed relocation
-  // section.
-  //
-  // Proposal for adding SHT_RELR sections to generic-abi is here:
-  //   https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
-  //
-  // The encoded sequence of Elf64_Relr entries in a SHT_RELR section looks
-  // like [ AAAAAAAA BBBBBBB1 BBBBBBB1 ... AAAAAAAA BBBBBB1 ... ]
-  //
-  // i.e. start with an address, followed by any number of bitmaps. The address
-  // entry encodes 1 relocation. The subsequent bitmap entries encode up to 63
-  // relocations each, at subsequent offsets following the last address entry.
-  //
-  // The bitmap entries must have 1 in the least significant bit. The assumption
-  // here is that an address cannot have 1 in lsb. Odd addresses are not
-  // supported.
-  //
-  // Excluding the least significant bit in the bitmap, each non-zero bit in
-  // the bitmap represents a relocation to be applied to a corresponding machine
-  // word that follows the base address word. The second least significant bit
-  // represents the machine word immediately following the initial address, and
-  // each bit that follows represents the next word, in linear order. As such,
-  // a single bitmap can encode up to 31 relocations in a 32-bit object, and
-  // 63 relocations in a 64-bit object.
-  //
-  // This encoding has a couple of interesting properties:
-  // 1. Looking at any entry, it is clear whether it's an address or a bitmap:
-  //    even means address, odd means bitmap.
-  // 2. Just a simple list of addresses is a valid encoding.
-
-  Elf_Rela Rela;
-  Rela.r_info = 0;
-  Rela.r_addend = 0;
-  Rela.setType(getRelativeRelocationType(), false);
-  std::vector<Elf_Rela> Relocs;
-
-  // Word type: uint32_t for Elf32, and uint64_t for Elf64.
-  typedef typename ELFT::uint Word;
-
-  // Word size in number of bytes.
-  const size_t WordSize = sizeof(Word);
-
-  // Number of bits used for the relocation offsets bitmap.
-  // These many relative relocations can be encoded in a single entry.
-  const size_t NBits = 8*WordSize - 1;
-
-  Word Base = 0;
-  for (const Elf_Relr &R : relrs) {
-    Word Entry = R;
-    if ((Entry&1) == 0) {
-      // Even entry: encodes the offset for next relocation.
-      Rela.r_offset = Entry;
-      Relocs.push_back(Rela);
-      // Set base offset for subsequent bitmap entries.
-      Base = Entry + WordSize;
-      continue;
-    }
-
-    // Odd entry: encodes bitmap for relocations starting at base.
-    Word Offset = Base;
-    while (Entry != 0) {
-      Entry >>= 1;
-      if ((Entry&1) != 0) {
-        Rela.r_offset = Offset;
-        Relocs.push_back(Rela);
-      }
-      Offset += WordSize;
-    }
-
-    // Advance base offset by NBits words.
-    Base += NBits * WordSize;
-  }
-
-  return Relocs;
-}
-
-template <class ELFT>
-Expected<std::vector<typename ELFT::Rela>>
-ELFFile<ELFT>::android_relas(const Elf_Shdr *Sec) const {
-  // This function reads relocations in Android's packed relocation format,
-  // which is based on SLEB128 and delta encoding.
-  Expected<ArrayRef<uint8_t>> ContentsOrErr = getSectionContents(Sec);
-  if (!ContentsOrErr)
-    return ContentsOrErr.takeError();
-  const uint8_t *Cur = ContentsOrErr->begin();
-  const uint8_t *End = ContentsOrErr->end();
-  if (ContentsOrErr->size() < 4 || Cur[0] != 'A' || Cur[1] != 'P' ||
-      Cur[2] != 'S' || Cur[3] != '2')
-    return createError("invalid packed relocation header");
-  Cur += 4;
-
-  const char *ErrStr = nullptr;
-  auto ReadSLEB = [&]() -> int64_t {
-    if (ErrStr)
-      return 0;
-    unsigned Len;
-    int64_t Result = decodeSLEB128(Cur, &Len, End, &ErrStr);
-    Cur += Len;
-    return Result;
-  };
-
-  uint64_t NumRelocs = ReadSLEB();
-  uint64_t Offset = ReadSLEB();
-  uint64_t Addend = 0;
-
-  if (ErrStr)
-    return createError(ErrStr);
-
-  std::vector<Elf_Rela> Relocs;
-  Relocs.reserve(NumRelocs);
-  while (NumRelocs) {
-    uint64_t NumRelocsInGroup = ReadSLEB();
-    if (NumRelocsInGroup > NumRelocs)
-      return createError("relocation group unexpectedly large");
-    NumRelocs -= NumRelocsInGroup;
-
-    uint64_t GroupFlags = ReadSLEB();
-    bool GroupedByInfo = GroupFlags & ELF::RELOCATION_GROUPED_BY_INFO_FLAG;
-    bool GroupedByOffsetDelta = GroupFlags & ELF::RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG;
-    bool GroupedByAddend = GroupFlags & ELF::RELOCATION_GROUPED_BY_ADDEND_FLAG;
-    bool GroupHasAddend = GroupFlags & ELF::RELOCATION_GROUP_HAS_ADDEND_FLAG;
-
-    uint64_t GroupOffsetDelta;
-    if (GroupedByOffsetDelta)
-      GroupOffsetDelta = ReadSLEB();
-
-    uint64_t GroupRInfo;
-    if (GroupedByInfo)
-      GroupRInfo = ReadSLEB();
-
-    if (GroupedByAddend && GroupHasAddend)
-      Addend += ReadSLEB();
-
-    if (!GroupHasAddend)
-      Addend = 0;
-
-    for (uint64_t I = 0; I != NumRelocsInGroup; ++I) {
-      Elf_Rela R;
-      Offset += GroupedByOffsetDelta ? GroupOffsetDelta : ReadSLEB();
-      R.r_offset = Offset;
-      R.r_info = GroupedByInfo ? GroupRInfo : ReadSLEB();
-      if (GroupHasAddend && !GroupedByAddend)
-        Addend += ReadSLEB();
-      R.r_addend = Addend;
-      Relocs.push_back(R);
-
-      if (ErrStr)
-        return createError(ErrStr);
-    }
-
-    if (ErrStr)
-      return createError(ErrStr);
-  }
-
-  return Relocs;
-}
-
-template <class ELFT>
-std::string ELFFile<ELFT>::getDynamicTagAsString(unsigned Arch,
-                                                 uint64_t Type) const {
-#define DYNAMIC_STRINGIFY_ENUM(tag, value)                                     \
-  case value:                                                                  \
-    return #tag;
-
-#define DYNAMIC_TAG(n, v)
-  switch (Arch) {
-  case ELF::EM_AARCH64:
-    switch (Type) {
-#define AARCH64_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
-#include "llvm/BinaryFormat/DynamicTags.def"
-#undef AARCH64_DYNAMIC_TAG
-    }
-    break;
-
-  case ELF::EM_HEXAGON:
-    switch (Type) {
-#define HEXAGON_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
-#include "llvm/BinaryFormat/DynamicTags.def"
-#undef HEXAGON_DYNAMIC_TAG
-    }
-    break;
-
-  case ELF::EM_MIPS:
-    switch (Type) {
-#define MIPS_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
-#include "llvm/BinaryFormat/DynamicTags.def"
-#undef MIPS_DYNAMIC_TAG
-    }
-    break;
-
-  case ELF::EM_PPC64:
-    switch (Type) {
-#define PPC64_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
-#include "llvm/BinaryFormat/DynamicTags.def"
-#undef PPC64_DYNAMIC_TAG
-    }
-    break;
-  }
-#undef DYNAMIC_TAG
-  switch (Type) {
-// Now handle all dynamic tags except the architecture specific ones
-#define AARCH64_DYNAMIC_TAG(name, value)
-#define MIPS_DYNAMIC_TAG(name, value)
-#define HEXAGON_DYNAMIC_TAG(name, value)
-#define PPC64_DYNAMIC_TAG(name, value)
-// Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc.
-#define DYNAMIC_TAG_MARKER(name, value)
-#define DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
-#include "llvm/BinaryFormat/DynamicTags.def"
-#undef DYNAMIC_TAG
-#undef AARCH64_DYNAMIC_TAG
-#undef MIPS_DYNAMIC_TAG
-#undef HEXAGON_DYNAMIC_TAG
-#undef PPC64_DYNAMIC_TAG
-#undef DYNAMIC_TAG_MARKER
-#undef DYNAMIC_STRINGIFY_ENUM
-  default:
-    return "<unknown:>0x" + utohexstr(Type, true);
-  }
-}
-
-template <class ELFT>
-std::string ELFFile<ELFT>::getDynamicTagAsString(uint64_t Type) const {
-  return getDynamicTagAsString(getHeader()->e_machine, Type);
-}
-
-template <class ELFT>
-Expected<typename ELFT::DynRange> ELFFile<ELFT>::dynamicEntries() const {
-  ArrayRef<Elf_Dyn> Dyn;
-  size_t DynSecSize = 0;
-
-  auto ProgramHeadersOrError = program_headers();
-  if (!ProgramHeadersOrError)
-    return ProgramHeadersOrError.takeError();
-
-  for (const Elf_Phdr &Phdr : *ProgramHeadersOrError) {
-    if (Phdr.p_type == ELF::PT_DYNAMIC) {
-      Dyn = makeArrayRef(
-          reinterpret_cast<const Elf_Dyn *>(base() + Phdr.p_offset),
-          Phdr.p_filesz / sizeof(Elf_Dyn));
-      DynSecSize = Phdr.p_filesz;
-      break;
-    }
-  }
-
-  // If we can't find the dynamic section in the program headers, we just fall
-  // back on the sections.
-  if (Dyn.empty()) {
-    auto SectionsOrError = sections();
-    if (!SectionsOrError)
-      return SectionsOrError.takeError();
-
-    for (const Elf_Shdr &Sec : *SectionsOrError) {
-      if (Sec.sh_type == ELF::SHT_DYNAMIC) {
-        Expected<ArrayRef<Elf_Dyn>> DynOrError =
-            getSectionContentsAsArray<Elf_Dyn>(&Sec);
-        if (!DynOrError)
-          return DynOrError.takeError();
-        Dyn = *DynOrError;
-        DynSecSize = Sec.sh_size;
-        break;
-      }
-    }
-
-    if (!Dyn.data())
-      return ArrayRef<Elf_Dyn>();
-  }
-
-  if (Dyn.empty())
-    // TODO: this error is untested.
-    return createError("invalid empty dynamic section");
-
-  if (DynSecSize % sizeof(Elf_Dyn) != 0)
-    // TODO: this error is untested.
-    return createError("malformed dynamic section");
-
-  if (Dyn.back().d_tag != ELF::DT_NULL)
-    // TODO: this error is untested.
-    return createError("dynamic sections must be DT_NULL terminated");
-
-  return Dyn;
-}
-
-template <class ELFT>
-Expected<const uint8_t *> ELFFile<ELFT>::toMappedAddr(uint64_t VAddr) const {
-  auto ProgramHeadersOrError = program_headers();
-  if (!ProgramHeadersOrError)
-    return ProgramHeadersOrError.takeError();
-
-  llvm::SmallVector<Elf_Phdr *, 4> LoadSegments;
-
-  for (const Elf_Phdr &Phdr : *ProgramHeadersOrError)
-    if (Phdr.p_type == ELF::PT_LOAD)
-      LoadSegments.push_back(const_cast<Elf_Phdr *>(&Phdr));
-
-  const Elf_Phdr *const *I =
-      std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr,
-                       [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) {
-                         return VAddr < Phdr->p_vaddr;
-                       });
-
-  if (I == LoadSegments.begin())
-    return createError("virtual address is not in any segment: 0x" +
-                       Twine::utohexstr(VAddr));
-  --I;
-  const Elf_Phdr &Phdr = **I;
-  uint64_t Delta = VAddr - Phdr.p_vaddr;
-  if (Delta >= Phdr.p_filesz)
-    return createError("virtual address is not in any segment: 0x" +
-                       Twine::utohexstr(VAddr));
-  return base() + Phdr.p_offset + Delta;
-}
-
-template class llvm::object::ELFFile<ELF32LE>;
-template class llvm::object::ELFFile<ELF32BE>;
-template class llvm::object::ELFFile<ELF64LE>;
-template class llvm::object::ELFFile<ELF64BE>;