1 files changed, 94 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
new file mode 100644
index 00000000000..3b5c951e2ba
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
@@ -0,0 +1,94 @@
+//===- DIASession.cpp - DIA implementation of IPDBSession -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/DIA/DIAEnumDebugStreams.h"
+#include "llvm/DebugInfo/PDB/DIA/DIARawSymbol.h"
+#include "llvm/DebugInfo/PDB/DIA/DIASession.h"
+#include "llvm/DebugInfo/PDB/DIA/DIASourceFile.h"
+#include "llvm/DebugInfo/PDB/PDBSymbolExe.h"
+#include "llvm/Support/ConvertUTF.h"
+
+using namespace llvm;
+
+namespace {}
+
+DIASession::DIASession(CComPtr<IDiaSession> DiaSession) : Session(DiaSession) {}
+
+DIASession *DIASession::createFromPdb(StringRef Path) {
+  CComPtr<IDiaDataSource> DataSource;
+  CComPtr<IDiaSession> Session;
+
+  // We assume that CoInitializeEx has already been called by the executable.
+  HRESULT Result = ::CoCreateInstance(CLSID_DiaSource, nullptr,
+                                      CLSCTX_INPROC_SERVER, IID_IDiaDataSource,
+                                      reinterpret_cast<LPVOID *>(&DataSource));
+  if (FAILED(Result))
+    return nullptr;
+
+  llvm::SmallVector<UTF16, 128> Path16;
+  if (!llvm::convertUTF8ToUTF16String(Path, Path16))
+    return nullptr;
+
+  const wchar_t *Path16Str = reinterpret_cast<const wchar_t*>(Path16.data());
+  if (FAILED(DataSource->loadDataFromPdb(Path16Str)))
+    return nullptr;
+
+  if (FAILED(DataSource->openSession(&Session)))
+    return nullptr;
+  return new DIASession(Session);
+}
+
+uint64_t DIASession::getLoadAddress() const {
+  uint64_t LoadAddress;
+  bool success = (S_OK == Session->get_loadAddress(&LoadAddress));
+  return (success) ? LoadAddress : 0;
+}
+
+void DIASession::setLoadAddress(uint64_t Address) {
+  Session->put_loadAddress(Address);
+}
+
+std::unique_ptr<PDBSymbolExe> DIASession::getGlobalScope() const {
+  CComPtr<IDiaSymbol> GlobalScope;
+  if (S_OK != Session->get_globalScope(&GlobalScope))
+    return nullptr;
+
+  auto RawSymbol = std::make_unique<DIARawSymbol>(*this, GlobalScope);
+  auto PdbSymbol(PDBSymbol::create(*this, std::move(RawSymbol)));
+  std::unique_ptr<PDBSymbolExe> ExeSymbol(
+      static_cast<PDBSymbolExe *>(PdbSymbol.release()));
+  return ExeSymbol;
+}
+
+std::unique_ptr<PDBSymbol> DIASession::getSymbolById(uint32_t SymbolId) const {
+  CComPtr<IDiaSymbol> LocatedSymbol;
+  if (S_OK != Session->symbolById(SymbolId, &LocatedSymbol))
+    return nullptr;
+
+  auto RawSymbol = std::make_unique<DIARawSymbol>(*this, LocatedSymbol);
+  return PDBSymbol::create(*this, std::move(RawSymbol));
+}
+
+std::unique_ptr<IPDBSourceFile>
+DIASession::getSourceFileById(uint32_t FileId) const {
+  CComPtr<IDiaSourceFile> LocatedFile;
+  if (S_OK != Session->findFileById(FileId, &LocatedFile))
+    return nullptr;
+
+  return std::make_unique<DIASourceFile>(*this, LocatedFile);
+}
+
+std::unique_ptr<IPDBEnumDataStreams> DIASession::getDebugStreams() const {
+  CComPtr<IDiaEnumDebugStreams> DiaEnumerator;
+  if (S_OK != Session->getEnumDebugStreams(&DiaEnumerator))
+    return nullptr;
+
+  return std::unique_ptr<IPDBEnumDataStreams>(
+      new DIAEnumDebugStreams(DiaEnumerator));
+}