[MCJIT] Remove the local symbol table from RuntimeDlyd - it's not needed.

[oota-llvm.git] / lib / ExecutionEngine / RuntimeDyld / RuntimeDyldELF.h

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index 36566da57a58b6707a3fa34c12c5ecd8c887b9c2..b4414b08c4806a53805ca4e614803904c1d8519d 100644 (file)
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -11,50 +11,120 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_RUNTIME_DYLD_ELF_H
-#define LLVM_RUNTIME_DYLD_ELF_H
+#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDELF_H
+#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDELF_H
 
 #include "RuntimeDyldImpl.h"
+#include "llvm/ADT/DenseMap.h"
 
 using namespace llvm;
 
-
 namespace llvm {
+namespace {
+// Helper for extensive error checking in debug builds.
+std::error_code Check(std::error_code Err) {
+  if (Err) {
+    report_fatal_error(Err.message());
+  }
+  return Err;
+}
+
+} // end anonymous namespace
+
 class RuntimeDyldELF : public RuntimeDyldImpl {
-protected:
-  void resolveX86_64Relocation(uint8_t *LocalAddress,
-                               uint64_t FinalAddress,
-                               uint64_t Value,
-                               uint32_t Type,
-                               int64_t Addend);
-
-  void resolveX86Relocation(uint8_t *LocalAddress,
-                            uint32_t FinalAddress,
-                            uint32_t Value,
-                            uint32_t Type,
-                            int32_t Addend);
-
-  void resolveARMRelocation(uint8_t *LocalAddress,
-                            uint32_t FinalAddress,
-                            uint32_t Value,
-                            uint32_t Type,
-                            int32_t Addend);
-
-  virtual void resolveRelocation(uint8_t *LocalAddress,
-                                 uint64_t FinalAddress,
-                                 uint64_t Value,
-                                 uint32_t Type,
-                                 int64_t Addend);
-
-  virtual void processRelocationRef(const ObjRelocationInfo &Rel,
-                                    const ObjectFile &Obj,
-                                    ObjSectionToIDMap &ObjSectionToID,
-                                    LocalSymbolMap &Symbols, StubMap &Stubs);
+
+  void resolveRelocation(const SectionEntry &Section, uint64_t Offset,
+                         uint64_t Value, uint32_t Type, int64_t Addend,
+                         uint64_t SymOffset = 0);
+
+  void resolveX86_64Relocation(const SectionEntry &Section, uint64_t Offset,
+                               uint64_t Value, uint32_t Type, int64_t Addend,
+                               uint64_t SymOffset);
+
+  void resolveX86Relocation(const SectionEntry &Section, uint64_t Offset,
+                            uint32_t Value, uint32_t Type, int32_t Addend);
+
+  void resolveAArch64Relocation(const SectionEntry &Section, uint64_t Offset,
+                                uint64_t Value, uint32_t Type, int64_t Addend);
+
+  void resolveARMRelocation(const SectionEntry &Section, uint64_t Offset,
+                            uint32_t Value, uint32_t Type, int32_t Addend);
+
+  void resolveMIPSRelocation(const SectionEntry &Section, uint64_t Offset,
+                             uint32_t Value, uint32_t Type, int32_t Addend);
+
+  void resolvePPC64Relocation(const SectionEntry &Section, uint64_t Offset,
+                              uint64_t Value, uint32_t Type, int64_t Addend);
+
+  void resolveSystemZRelocation(const SectionEntry &Section, uint64_t Offset,
+                                uint64_t Value, uint32_t Type, int64_t Addend);
+
+  unsigned getMaxStubSize() override {
+    if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be)
+      return 20; // movz; movk; movk; movk; br
+    if (Arch == Triple::arm || Arch == Triple::thumb)
+      return 8; // 32-bit instruction and 32-bit address
+    else if (Arch == Triple::mipsel || Arch == Triple::mips)
+      return 16;
+    else if (Arch == Triple::ppc64 || Arch == Triple::ppc64le)
+      return 44;
+    else if (Arch == Triple::x86_64)
+      return 6; // 2-byte jmp instruction + 32-bit relative address
+    else if (Arch == Triple::systemz)
+      return 16;
+    else
+      return 0;
+  }
+
+  unsigned getStubAlignment() override {
+    if (Arch == Triple::systemz)
+      return 8;
+    else
+      return 1;
+  }
+
+  void findPPC64TOCSection(const ObjectFile &Obj,
+                           ObjSectionToIDMap &LocalSections,
+                           RelocationValueRef &Rel);
+  void findOPDEntrySection(const ObjectFile &Obj,
+                           ObjSectionToIDMap &LocalSections,
+                           RelocationValueRef &Rel);
+
+  uint64_t findGOTEntry(uint64_t LoadAddr, uint64_t Offset);
+  size_t getGOTEntrySize();
+
+  void updateGOTEntries(StringRef Name, uint64_t Addr) override;
+
+  // Relocation entries for symbols whose position-independent offset is
+  // updated in a global offset table.
+  typedef SmallVector<RelocationValueRef, 2> GOTRelocations;
+  GOTRelocations GOTEntries; // List of entries requiring finalization.
+  SmallVector<std::pair<SID, GOTRelocations>, 8> GOTs; // Allocated tables.
+
+  // When a module is loaded we save the SectionID of the EH frame section
+  // in a table until we receive a request to register all unregistered
+  // EH frame sections with the memory manager.
+  SmallVector<SID, 2> UnregisteredEHFrameSections;
+  SmallVector<SID, 2> RegisteredEHFrameSections;
 
 public:
-  RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
+  RuntimeDyldELF(RTDyldMemoryManager *mm);
+  virtual ~RuntimeDyldELF();
+
+  std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
+  loadObject(const object::ObjectFile &O) override;
 
-  bool isCompatibleFormat(const MemoryBuffer *InputBuffer) const;
+  void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
+  relocation_iterator
+  processRelocationRef(unsigned SectionID, relocation_iterator RelI,
+                       const ObjectFile &Obj,
+                       ObjSectionToIDMap &ObjSectionToID,
+                       StubMap &Stubs) override;
+  bool isCompatibleFile(const object::ObjectFile &Obj) const override;
+  void registerEHFrames() override;
+  void deregisterEHFrames() override;
+  void finalizeLoad(const ObjectFile &Obj,
+                    ObjSectionToIDMap &SectionMap) override;
 };
 
 } // end namespace llvm