Remove the old ELF linker.

I think it is clear by now that the new linker is viable.

llvm-svn: 262158

1 files changed, 0 insertions, 147 deletions

diff --git a/lld/lib/ReaderWriter/ELF/X86_64/X86_64RelocationHandler.cpp b/lld/lib/ReaderWriter/ELF/X86_64/X86_64RelocationHandler.cpp
deleted file mode 100644
index d56983d1e38..00000000000
--- a/lld/lib/ReaderWriter/ELF/X86_64/X86_64RelocationHandler.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-//===- lib/ReaderWriter/ELF/X86_64/X86_64RelocationHandler.cpp ------------===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "X86_64LinkingContext.h"
-#include "X86_64TargetHandler.h"
-#include "llvm/Support/Endian.h"
-
-using namespace lld;
-using namespace lld::elf;
-using namespace llvm::support::endian;
-
-/// \brief R_X86_64_64 - word64: S + A
-static void reloc64(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  uint64_t result = S + A;
-  write64le(location, result | read64le(location));
-}
-
-/// \brief R_X86_64_PC32 - word32: S + A - P
-static void relocPC32(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  uint32_t result = (uint32_t)(S + A - P);
-  write32le(location, result + read32le(location));
-}
-
-/// \brief R_X86_64_32 - word32:  S + A
-static void reloc32(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  int32_t result = (uint32_t)(S + A);
-  write32le(location, result | read32le(location));
-  // TODO: Make sure that the result zero extends to the 64bit value.
-}
-
-/// \brief R_X86_64_32S - word32:  S + A
-static void reloc32S(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  int32_t result = (int32_t)(S + A);
-  write32le(location, result | read32le(location));
-  // TODO: Make sure that the result sign extends to the 64bit value.
-}
-
-/// \brief R_X86_64_16 - word16:  S + A
-static void reloc16(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  uint16_t result = (uint16_t)(S + A);
-  write16le(location, result | read16le(location));
-  // TODO: Check for overflow.
-}
-
-/// \brief R_X86_64_PC16 - word16: S + A - P
-static void relocPC16(uint8_t *location, uint64_t P, uint64_t S, int64_t A) {
-  uint16_t result = (uint16_t)(S + A - P);
-  write16le(location, result | read16le(location));
-  // TODO: Check for overflow.
-}
-
-/// \brief R_X86_64_PC64 - word64: S + A - P
-static void relocPC64(uint8_t *location, uint64_t P, uint64_t S, uint64_t A) {
-  int64_t result = (uint64_t)(S + A - P);
-  write64le(location, result | read64le(location));
-}
-
-std::error_code X86_64TargetRelocationHandler::applyRelocation(
-    ELFWriter &writer, llvm::FileOutputBuffer &buf, const AtomLayout &atom,
-    const Reference &ref) const {
-  uint8_t *atomContent = buf.getBufferStart() + atom._fileOffset;
-  uint8_t *loc = atomContent + ref.offsetInAtom();
-  uint64_t target = writer.addressOfAtom(ref.target());
-  uint64_t reloc = atom._virtualAddr + ref.offsetInAtom();
-
-  if (ref.kindNamespace() != Reference::KindNamespace::ELF)
-    return std::error_code();
-  assert(ref.kindArch() == Reference::KindArch::x86_64);
-  switch (ref.kindValue()) {
-  case R_X86_64_NONE:
-    break;
-  case R_X86_64_64:
-    reloc64(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_PC32:
-  case R_X86_64_GOTPCREL:
-    relocPC32(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_32:
-    reloc32(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_32S:
-    reloc32S(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_16:
-    reloc16(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_PC16:
-    relocPC16(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_DTPOFF32:
-  case R_X86_64_TPOFF32:
-    _tlsSize = _layout.getTLSSize();
-    write32le(loc, target - _tlsSize);
-    break;
-  case R_X86_64_GOTTPOFF:
-    relocPC32(loc, reloc, target, ref.addend());
-    break;
-  case R_X86_64_TLSGD: {
-    relocPC32(loc, reloc, target, ref.addend());
-    break;
-  }
-  case R_X86_64_TLSLD: {
-    // Rewrite to move %fs:0 into %rax. Technically we should verify that the
-    // next relocation is a PC32 to __tls_get_addr...
-    static uint8_t instr[] = { 0x66, 0x66, 0x66, 0x64, 0x48, 0x8b, 0x04, 0x25,
-                               0x00, 0x00, 0x00, 0x00 };
-    std::memcpy(loc - 3, instr, sizeof(instr));
-    break;
-  }
-  case R_X86_64_PC64:
-    relocPC64(loc, reloc, target, ref.addend());
-    break;
-  case LLD_R_X86_64_GOTRELINDEX: {
-    const DefinedAtom *target = cast<const DefinedAtom>(ref.target());
-    for (const Reference *r : *target) {
-      if (r->kindValue() == R_X86_64_JUMP_SLOT) {
-        uint32_t index;
-        if (!_layout.getPLTRelocationTable()->getRelocationIndex(*r, index))
-          llvm_unreachable("Relocation doesn't exist");
-        reloc32(loc, 0, index, 0);
-        break;
-      }
-    }
-    break;
-  }
-  // Runtime only relocations. Ignore here.
-  case R_X86_64_RELATIVE:
-  case R_X86_64_IRELATIVE:
-  case R_X86_64_JUMP_SLOT:
-  case R_X86_64_GLOB_DAT:
-  case R_X86_64_DTPMOD64:
-  case R_X86_64_DTPOFF64:
-  case R_X86_64_TPOFF64:
-    break;
-  default:
-    return make_unhandled_reloc_error();
-  }
-
-  return std::error_code();
-}