lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h

   1 //===-- RuntimeDyldELF.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // ELF support for MC-JIT runtime dynamic linker.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_RUNTIME_DYLD_ELF_H
  15 #define LLVM_RUNTIME_DYLD_ELF_H
  16
  17 #include "RuntimeDyldImpl.h"
  18
  19 using namespace llvm;
  20
  21 namespace llvm {
  22
  23 namespace {
  24   // Helper for extensive error checking in debug builds.
  25   error_code Check(error_code Err) {
  26     if (Err) {
  27       report_fatal_error(Err.message());
  28     }
  29     return Err;
  30   }
  31 } // end anonymous namespace
  32
  33 class RuntimeDyldELF : public RuntimeDyldImpl {
  34   void resolveRelocation(const SectionEntry &Section,
  35                          uint64_t Offset,
  36                          uint64_t Value,
  37                          uint32_t Type,
  38                          int64_t Addend);
  39
  40 protected:
  41   void resolveX86_64Relocation(const SectionEntry &Section,
  42                                uint64_t Offset,
  43                                uint64_t Value,
  44                                uint32_t Type,
  45                                int64_t Addend);
  46
  47   void resolveX86Relocation(const SectionEntry &Section,
  48                             uint64_t Offset,
  49                             uint32_t Value,
  50                             uint32_t Type,
  51                             int32_t Addend);
  52
  53   void resolveARMRelocation(const SectionEntry &Section,
  54                             uint64_t Offset,
  55                             uint32_t Value,
  56                             uint32_t Type,
  57                             int32_t Addend);
  58
  59   void resolveMIPSRelocation(const SectionEntry &Section,
  60                              uint64_t Offset,
  61                              uint32_t Value,
  62                              uint32_t Type,
  63                              int32_t Addend);
  64
  65   void resolvePPC64Relocation(const SectionEntry &Section,
  66                               uint64_t Offset,
  67                               uint64_t Value,
  68                               uint32_t Type,
  69                               int64_t Addend);
  70
  71   virtual void resolveRelocation(const RelocationEntry &RE, uint64_t Value);
  72
  73   virtual void processRelocationRef(unsigned SectionID,
  74                                     RelocationRef RelI,
  75                                     ObjectImage &Obj,
  76                                     ObjSectionToIDMap &ObjSectionToID,
  77                                     const SymbolTableMap &Symbols,
  78                                     StubMap &Stubs);
  79
  80   unsigned getCommonSymbolAlignment(const SymbolRef &Sym);
  81
  82   virtual ObjectImage *createObjectImage(ObjectBuffer *InputBuffer);
  83
  84   uint64_t findPPC64TOC() const;
  85   void findOPDEntrySection(ObjectImage &Obj,
  86                            ObjSectionToIDMap &LocalSections,
  87                            RelocationValueRef &Rel);
  88
  89 public:
  90   RuntimeDyldELF(RTDyldMemoryManager *mm)
  91       : RuntimeDyldImpl(mm) {}
  92
  93   virtual ~RuntimeDyldELF();
  94
  95   bool isCompatibleFormat(const ObjectBuffer *Buffer) const;
  96 };
  97
  98 } // end namespace llvm
  99
 100 #endif