1 //===- PDB.cpp - base header file for creating a PDB reader ---------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/DebugInfo/PDB/PDB.h"
10 #include "llvm/ADT/StringRef.h"
11 #include "llvm/Config/config.h"
12 #include "llvm/DebugInfo/PDB/GenericError.h"
13 #if LLVM_ENABLE_DIA_SDK
14 #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
15 #endif
16 #include "llvm/DebugInfo/PDB/Native/NativeSession.h"
17 #include "llvm/Support/Error.h"
18 #include "llvm/Support/MemoryBuffer.h"
19 
20 using namespace llvm;
21 using namespace llvm::pdb;
22 
23 Error llvm::pdb::loadDataForPDB(PDB_ReaderType Type, StringRef Path,
24                                 std::unique_ptr<IPDBSession> &Session) {
25   // Create the correct concrete instance type based on the value of Type.
26   if (Type == PDB_ReaderType::Native) {
27     ErrorOr<std::unique_ptr<MemoryBuffer>> ErrorOrBuffer =
28         MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1,
29                                      /*RequiresNullTerminator=*/false);
30     if (!ErrorOrBuffer)
31       return errorCodeToError(ErrorOrBuffer.getError());
32 
33     return NativeSession::createFromPdb(std::move(*ErrorOrBuffer), Session);
34   }
35 
36 #if LLVM_ENABLE_DIA_SDK
37   return DIASession::createFromPdb(Path, Session);
38 #else
39   return make_error<PDBError>(pdb_error_code::dia_sdk_not_present);
40 #endif
41 }
42 
43 Error llvm::pdb::loadDataForEXE(PDB_ReaderType Type, StringRef Path,
44                                 std::unique_ptr<IPDBSession> &Session) {
45   // Create the correct concrete instance type based on the value of Type.
46   if (Type == PDB_ReaderType::Native)
47     return NativeSession::createFromExe(Path, Session);
48 
49 #if LLVM_ENABLE_DIA_SDK
50   return DIASession::createFromExe(Path, Session);
51 #else
52   return make_error<PDBError>(pdb_error_code::dia_sdk_not_present);
53 #endif
54 }
55