lib/DebugInfo/CodeView/DebugCrossExSubsection.cpp

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