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