Line data    Source code

       1             : #include "llvm/DebugInfo/CodeView/SimpleTypeSerializer.h"
       2             : 
       3             : using namespace llvm;
       4             : using namespace llvm::codeview;
       5             : 
       6        3175 : static void writeRecordPrefix(BinaryStreamWriter &Writer, TypeLeafKind Kind) {
       7             :   RecordPrefix Prefix;
       8             :   Prefix.RecordKind = Kind;
       9             :   Prefix.RecordLen = 0;
      10        3175 :   cantFail(Writer.writeObject(Prefix));
      11        3175 : }
      12             : 
      13        3175 : static void addPadding(BinaryStreamWriter &Writer) {
      14        3175 :   uint32_t Align = Writer.getOffset() % 4;
      15        3175 :   if (Align == 0)
      16             :     return;
      17             : 
      18        1213 :   int PaddingBytes = 4 - Align;
      19        3732 :   while (PaddingBytes > 0) {
      20        2519 :     uint8_t Pad = static_cast<uint8_t>(LF_PAD0 + PaddingBytes);
      21        2519 :     cantFail(Writer.writeInteger(Pad));
      22        2519 :     --PaddingBytes;
      23             :   }
      24             : }
      25             : 
      26        6608 : SimpleTypeSerializer::SimpleTypeSerializer() : ScratchBuffer(MaxRecordLength) {}
      27             : 
      28        6605 : SimpleTypeSerializer::~SimpleTypeSerializer() {}
      29             : 
      30             : template <typename T>
      31        3175 : ArrayRef<uint8_t> SimpleTypeSerializer::serialize(T &Record) {
      32        3175 :   BinaryStreamWriter Writer(ScratchBuffer, support::little);
      33             :   TypeRecordMapping Mapping(Writer);
      34             : 
      35             :   CVType CVT;
      36             :   CVT.Type = static_cast<TypeLeafKind>(Record.getKind());
      37             : 
      38        3175 :   writeRecordPrefix(Writer, CVT.Type);
      39             : 
      40        3175 :   cantFail(Mapping.visitTypeBegin(CVT));
      41        3175 :   cantFail(Mapping.visitKnownRecord(CVT, Record));
      42        3175 :   cantFail(Mapping.visitTypeEnd(CVT));
      43             : 
      44        3175 :   addPadding(Writer);
      45             : 
      46        3175 :   RecordPrefix *Prefix = reinterpret_cast<RecordPrefix *>(ScratchBuffer.data());
      47             : 
      48        3175 :   Prefix->RecordKind = CVT.kind();
      49        3175 :   Prefix->RecordLen = Writer.getOffset() - sizeof(uint16_t);
      50             : 
      51        3175 :   return {ScratchBuffer.data(), Writer.getOffset()};
      52             : }
      53             : 
      54             : // Explicitly instantiate the member function for each known type so that we can
      55             : // implement this in the cpp file.
      56             : #define TYPE_RECORD(EnumName, EnumVal, Name)                                   \
      57             :   template ArrayRef<uint8_t> llvm::codeview::SimpleTypeSerializer::serialize(  \
      58             :       Name##Record &Record);
      59             : #define TYPE_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
      60             : #define MEMBER_RECORD(EnumName, EnumVal, Name)
      61             : #define MEMBER_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
      62             : #include "llvm/DebugInfo/CodeView/CodeViewTypes.def"