lib/DebugInfo/CodeView/DebugCrossExSubsection.cpp

   1 //===- DebugCrossExSubsection.cpp -----------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/DebugInfo/CodeView/DebugCrossExSubsection.h"
  11 #include "llvm/DebugInfo/CodeView/CodeViewError.h"
  12 #include "llvm/Support/BinaryStreamWriter.h"
  13 #include "llvm/Support/Error.h"
  14 #include <cstdint>
  15
  16 using namespace llvm;
  17 using namespace llvm::codeview;
  18
  19 Error DebugCrossModuleExportsSubsectionRef::initialize(
  20     BinaryStreamReader Reader) {
  21   if (Reader.bytesRemaining() % sizeof(CrossModuleExport) != 0)
  22     return make_error<CodeViewError>(
  23         cv_error_code::corrupt_record,
  24         "Cross Scope Exports section is an invalid size!");
  25
  26   uint32_t Size = Reader.bytesRemaining() / sizeof(CrossModuleExport);
  27   return Reader.readArray(References, Size);
  28 }
  29
  30 Error DebugCrossModuleExportsSubsectionRef::initialize(BinaryStreamRef Stream) {
  31   BinaryStreamReader Reader(Stream);
  32   return initialize(Reader);
  33 }
  34
  35 void DebugCrossModuleExportsSubsection::addMapping(uint32_t Local,
  36                                                    uint32_t Global) {
  37   Mappings[Local] = Global;
  38 }
  39
  40 uint32_t DebugCrossModuleExportsSubsection::calculateSerializedSize() const {
  41   return Mappings.size() * sizeof(CrossModuleExport);
  42 }
  43
  44 Error DebugCrossModuleExportsSubsection::commit(
  45     BinaryStreamWriter &Writer) const {
  46   for (const auto &M : Mappings) {
  47     if (auto EC = Writer.writeInteger(M.first))
  48       return EC;
  49     if (auto EC = Writer.writeInteger(M.second))
  50       return EC;
  51   }
  52   return Error::success();
  53 }