lib/ReaderWriter/ELF/X86_64/X86_64TargetHandler.cpp

   1 //===- lib/ReaderWriter/ELF/X86_64/X86_64TargetHandler.cpp ----------------===//
   2 //
   3 //                             The LLVM Linker
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "Atoms.h"
  11 #include "X86_64DynamicLibraryWriter.h"
  12 #include "X86_64ExecutableWriter.h"
  13 #include "X86_64LinkingContext.h"
  14 #include "X86_64TargetHandler.h"
  15
  16 using namespace lld;
  17 using namespace elf;
  18
  19 X86_64TargetHandler::X86_64TargetHandler(X86_64LinkingContext &context)
  20     : _context(context), _x86_64TargetLayout(new X86_64TargetLayout(context)),
  21       _x86_64RelocationHandler(
  22           new X86_64TargetRelocationHandler(*_x86_64TargetLayout.get())) {}
  23
  24 void X86_64TargetHandler::registerRelocationNames(Registry &registry) {
  25   registry.addKindTable(Reference::KindNamespace::ELF,
  26                         Reference::KindArch::x86_64, kindStrings);
  27 }
  28
  29 std::unique_ptr<Writer> X86_64TargetHandler::getWriter() {
  30   switch (this->_context.getOutputELFType()) {
  31   case llvm::ELF::ET_EXEC:
  32     return std::unique_ptr<Writer>(
  33         new X86_64ExecutableWriter(_context, *_x86_64TargetLayout.get()));
  34   case llvm::ELF::ET_DYN:
  35     return std::unique_ptr<Writer>(
  36         new X86_64DynamicLibraryWriter(_context, *_x86_64TargetLayout.get()));
  37   case llvm::ELF::ET_REL:
  38     llvm_unreachable("TODO: support -r mode");
  39   default:
  40     llvm_unreachable("unsupported output type");
  41   }
  42 }
  43
  44 #define ELF_RELOC(name, value) LLD_KIND_STRING_ENTRY(name),
  45
  46 const Registry::KindStrings X86_64TargetHandler::kindStrings[] = {
  47 #include "llvm/Support/ELFRelocs/x86_64.def"
  48   LLD_KIND_STRING_ENTRY(LLD_R_X86_64_GOTRELINDEX),
  49   LLD_KIND_STRING_END
  50 };
  51
  52 #undef ELF_RELOC