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/BinaryStreamReader.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 } 54