Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

366 lines
16 KiB
C++

//===- PDBExtras.cpp - helper functions and classes for PDBs --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/PDB/PDBExtras.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace llvm::pdb;
#define CASE_OUTPUT_ENUM_CLASS_STR(Class, Value, Str, Stream) \
case Class::Value: \
Stream << Str; \
break;
#define CASE_OUTPUT_ENUM_CLASS_NAME(Class, Value, Stream) \
CASE_OUTPUT_ENUM_CLASS_STR(Class, Value, #Value, Stream)
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_VariantType &Type) {
switch (Type) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Bool, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Single, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Double, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Int8, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Int16, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Int32, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, Int64, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, UInt8, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, UInt16, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, UInt32, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_VariantType, UInt64, OS)
default:
OS << "Unknown";
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_BuiltinType &Type) {
switch (Type) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, None, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Void, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Char, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, WCharT, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Int, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, UInt, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Float, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, BCD, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Bool, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Long, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, ULong, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Currency, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Date, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Variant, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Complex, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Bitfield, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, BSTR, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, HResult, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Char16, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_BuiltinType, Char32, OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_CallingConv &Conv) {
OS << "__";
switch (Conv) {
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearC , "cdecl", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, FarC , "cdecl", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearPascal , "pascal", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, FarPascal , "pascal", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearFast , "fastcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, FarFast , "fastcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearStdCall, "stdcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, FarStdCall , "stdcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearSysCall, "syscall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, FarSysCall , "syscall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, ThisCall , "thiscall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, MipsCall , "mipscall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, Generic , "genericcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, AlphaCall , "alphacall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, PpcCall , "ppccall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, SHCall , "superhcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, ArmCall , "armcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, AM33Call , "am33call", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, TriCall , "tricall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, SH5Call , "sh5call", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, M32RCall , "m32rcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, ClrCall , "clrcall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, Inline , "inlinecall", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_CallingConv, NearVector , "vectorcall", OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const PDB_DataKind &Data) {
switch (Data) {
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Unknown, "unknown", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Local, "local", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, StaticLocal, "static local", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Param, "param", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, ObjectPtr, "this ptr", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, FileStatic, "static global", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Global, "global", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Member, "member", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, StaticMember, "static member", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_DataKind, Constant, "const", OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const codeview::RegisterId &Reg) {
switch (Reg) {
#define CV_REGISTER(name, val) case codeview::RegisterId::name: OS << #name; return OS;
#include "llvm/DebugInfo/CodeView/CodeViewRegisters.def"
#undef CV_REGISTER
}
OS << static_cast<int>(Reg);
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const PDB_LocType &Loc) {
switch (Loc) {
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, Static, "static", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, TLS, "tls", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, RegRel, "regrel", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, ThisRel, "thisrel", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, Enregistered, "register", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, BitField, "bitfield", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, Slot, "slot", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, IlRel, "IL rel", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, MetaData, "metadata", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, Constant, "constant", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_LocType, RegRelAliasIndir,
"regrelaliasindir", OS)
default:
OS << "Unknown";
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const codeview::ThunkOrdinal &Thunk) {
switch (Thunk) {
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, BranchIsland, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, Pcode, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, Standard, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, ThisAdjustor, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, TrampIncremental, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, UnknownLoad, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(codeview::ThunkOrdinal, Vcall, OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_Checksum &Checksum) {
switch (Checksum) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Checksum, None, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Checksum, MD5, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Checksum, SHA1, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Checksum, SHA256, OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const PDB_Lang &Lang) {
switch (Lang) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, C, OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_Lang, Cpp, "C++", OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Fortran, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Masm, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Pascal, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Basic, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Cobol, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Link, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Cvtres, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Cvtpgd, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, CSharp, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, VB, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, ILAsm, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, Java, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, JScript, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, MSIL, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, HLSL, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, D, OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const PDB_SymType &Tag) {
switch (Tag) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Exe, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Compiland, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, CompilandDetails, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, CompilandEnv, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Function, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Block, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Data, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Annotation, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Label, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, PublicSymbol, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, UDT, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Enum, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, FunctionSig, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, PointerType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, ArrayType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, BuiltinType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Typedef, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, BaseClass, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Friend, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, FunctionArg, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, FuncDebugStart, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, FuncDebugEnd, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, UsingNamespace, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, VTableShape, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, VTable, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Custom, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Thunk, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, CustomType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, ManagedType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Dimension, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, CallSite, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, InlineSite, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, BaseInterface, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, VectorType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, MatrixType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, HLSLType, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Caller, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Callee, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Export, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, HeapAllocationSite, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, CoffGroup, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SymType, Inlinee, OS)
default:
OS << "Unknown SymTag " << uint32_t(Tag);
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_MemberAccess &Access) {
switch (Access) {
CASE_OUTPUT_ENUM_CLASS_STR(PDB_MemberAccess, Public, "public", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_MemberAccess, Protected, "protected", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_MemberAccess, Private, "private", OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const PDB_UdtType &Type) {
switch (Type) {
CASE_OUTPUT_ENUM_CLASS_STR(PDB_UdtType, Class, "class", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_UdtType, Struct, "struct", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_UdtType, Interface, "interface", OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_UdtType, Union, "union", OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_Machine &Machine) {
switch (Machine) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Am33, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Amd64, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Arm, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, ArmNT, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Ebc, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, x86, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Ia64, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, M32R, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Mips16, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, MipsFpu, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, MipsFpu16, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, PowerPC, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, PowerPCFP, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, R4000, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, SH3, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, SH3DSP, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, SH4, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, SH5, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, Thumb, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Machine, WceMipsV2, OS)
default:
OS << "Unknown";
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const PDB_SourceCompression &Compression) {
switch (Compression) {
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SourceCompression, None, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SourceCompression, Huffman, OS)
CASE_OUTPUT_ENUM_CLASS_NAME(PDB_SourceCompression, LZ, OS)
CASE_OUTPUT_ENUM_CLASS_STR(PDB_SourceCompression, RunLengthEncoded, "RLE",
OS)
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const Variant &Value) {
switch (Value.Type) {
case PDB_VariantType::Bool:
OS << (Value.Value.Bool ? "true" : "false");
break;
case PDB_VariantType::Double:
OS << Value.Value.Double;
break;
case PDB_VariantType::Int16:
OS << Value.Value.Int16;
break;
case PDB_VariantType::Int32:
OS << Value.Value.Int32;
break;
case PDB_VariantType::Int64:
OS << Value.Value.Int64;
break;
case PDB_VariantType::Int8:
OS << static_cast<int>(Value.Value.Int8);
break;
case PDB_VariantType::Single:
OS << Value.Value.Single;
break;
case PDB_VariantType::UInt16:
OS << Value.Value.UInt16;
break;
case PDB_VariantType::UInt32:
OS << Value.Value.UInt32;
break;
case PDB_VariantType::UInt64:
OS << Value.Value.UInt64;
break;
case PDB_VariantType::UInt8:
OS << static_cast<unsigned>(Value.Value.UInt8);
break;
case PDB_VariantType::String:
OS << Value.Value.String;
break;
default:
OS << Value.Type;
}
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS,
const VersionInfo &Version) {
OS << Version.Major << "." << Version.Minor << "." << Version.Build;
return OS;
}
raw_ostream &llvm::pdb::operator<<(raw_ostream &OS, const TagStats &Stats) {
for (auto Tag : Stats) {
OS << Tag.first << ":" << Tag.second << " ";
}
return OS;
}