1 files changed, 95 insertions, 0 deletions
diff --git a/contrib/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/contrib/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
new file mode 100644
index 0000000..33dd705
--- /dev/null
+++ b/contrib/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -0,0 +1,95 @@
+//===-- RuntimeDyld.cpp - Run-time dynamic linker for MC-JIT ------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Implementation of the MC-JIT runtime dynamic linker.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "dyld"
+#include "RuntimeDyldImpl.h"
+using namespace llvm;
+using namespace llvm::object;
+
+// Empty out-of-line virtual destructor as the key function.
+RTDyldMemoryManager::~RTDyldMemoryManager() {}
+RuntimeDyldImpl::~RuntimeDyldImpl() {}
+
+namespace llvm {
+
+void RuntimeDyldImpl::extractFunction(StringRef Name, uint8_t *StartAddress,
+                                      uint8_t *EndAddress) {
+  // Allocate memory for the function via the memory manager.
+  uintptr_t Size = EndAddress - StartAddress + 1;
+  uintptr_t AllocSize = Size;
+  uint8_t *Mem = MemMgr->startFunctionBody(Name.data(), AllocSize);
+  assert(Size >= (uint64_t)(EndAddress - StartAddress + 1) &&
+         "Memory manager failed to allocate enough memory!");
+  // Copy the function payload into the memory block.
+  memcpy(Mem, StartAddress, Size);
+  MemMgr->endFunctionBody(Name.data(), Mem, Mem + Size);
+  // Remember where we put it.
+  Functions[Name] = sys::MemoryBlock(Mem, Size);
+  // Default the assigned address for this symbol to wherever this
+  // allocated it.
+  SymbolTable[Name] = Mem;
+  DEBUG(dbgs() << "    allocated to [" << Mem << ", " << Mem + Size << "]\n");
+}
+
+// Resolve the relocations for all symbols we currently know about.
+void RuntimeDyldImpl::resolveRelocations() {
+  // Just iterate over the symbols in our symbol table and assign their
+  // addresses.
+  StringMap<uint8_t*>::iterator i = SymbolTable.begin();
+  StringMap<uint8_t*>::iterator e = SymbolTable.end();
+  for (;i != e; ++i)
+    reassignSymbolAddress(i->getKey(), i->getValue());
+}
+
+//===----------------------------------------------------------------------===//
+// RuntimeDyld class implementation
+RuntimeDyld::RuntimeDyld(RTDyldMemoryManager *mm) {
+  Dyld = 0;
+  MM = mm;
+}
+
+RuntimeDyld::~RuntimeDyld() {
+  delete Dyld;
+}
+
+bool RuntimeDyld::loadObject(MemoryBuffer *InputBuffer) {
+  if (!Dyld) {
+    if (RuntimeDyldMachO::isKnownFormat(InputBuffer))
+      Dyld = new RuntimeDyldMachO(MM);
+    else
+      report_fatal_error("Unknown object format!");
+  } else {
+    if(!Dyld->isCompatibleFormat(InputBuffer))
+      report_fatal_error("Incompatible object format!");
+  }
+
+  return Dyld->loadObject(InputBuffer);
+}
+
+void *RuntimeDyld::getSymbolAddress(StringRef Name) {
+  return Dyld->getSymbolAddress(Name);
+}
+
+void RuntimeDyld::resolveRelocations() {
+  Dyld->resolveRelocations();
+}
+
+void RuntimeDyld::reassignSymbolAddress(StringRef Name, uint8_t *Addr) {
+  Dyld->reassignSymbolAddress(Name, Addr);
+}
+
+StringRef RuntimeDyld::getErrorString() {
+  return Dyld->getErrorString();
+}
+
+} // end namespace llvm