WasmYAML.cpp

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//===- WasmYAML.cpp - Wasm YAMLIO implementation --------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines classes for handling the YAML representation of wasm.
//
//===----------------------------------------------------------------------===//
 
#include "llvm/ObjectYAML/WasmYAML.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/Wasm.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/YAMLTraits.h"
 
namespace llvm {
 
namespace WasmYAML {
 
// Declared here rather than in the header to comply with:
// http://llvm.org/docs/CodingStandards.html#provide-a-virtual-method-anchor-for-classes-in-headers
Section::~Section() = default;
 
} // end namespace WasmYAML
 
namespace yaml {
 
void MappingTraits<WasmYAML::FileHeader>::mapping(
    IO &IO, WasmYAML::FileHeader &FileHdr) {
  IO.mapRequired("Version", FileHdr.Version);
}
 
void MappingTraits<WasmYAML::Object>::mapping(IO &IO,
                                              WasmYAML::Object &Object) {
  IO.setContext(&Object);
  IO.mapTag("!WASM", true);
  IO.mapRequired("FileHeader", Object.Header);
  IO.mapOptional("Sections", Object.Sections);
  IO.setContext(nullptr);
}
 
static void commonSectionMapping(IO &IO, WasmYAML::Section &Section) {
  IO.mapRequired("Type", Section.Type);
  IO.mapOptional("Relocations", Section.Relocations);
  IO.mapOptional("HeaderSecSizeEncodingLen", Section.HeaderSecSizeEncodingLen);
}
 
static void sectionMapping(IO &IO, WasmYAML::DylinkSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapOptional("TargetArch", Section.TargetArch, StringRef());
  IO.mapRequired("MemorySize", Section.MemorySize);
  IO.mapRequired("MemoryAlignment", Section.MemoryAlignment);
  IO.mapRequired("TableSize", Section.TableSize);
  IO.mapRequired("TableAlignment", Section.TableAlignment);
  IO.mapRequired("Needed", Section.Needed);
  IO.mapOptional("ImportInfo", Section.ImportInfo);
  IO.mapOptional("ExportInfo", Section.ExportInfo);
  IO.mapOptional("RuntimePath", Section.RuntimePath);
}
 
static void sectionMapping(IO &IO, WasmYAML::NameSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapOptional("FunctionNames", Section.FunctionNames);
  IO.mapOptional("GlobalNames", Section.GlobalNames);
  IO.mapOptional("DataSegmentNames", Section.DataSegmentNames);
}
 
static void sectionMapping(IO &IO, WasmYAML::LinkingSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapRequired("Version", Section.Version);
  IO.mapOptional("TargetArch", Section.TargetArch, StringRef());
  IO.mapOptional("SymbolTable", Section.SymbolTable);
  IO.mapOptional("SegmentInfo", Section.SegmentInfos);
  IO.mapOptional("InitFunctions", Section.InitFunctions);
  IO.mapOptional("Comdats", Section.Comdats);
}
 
static void sectionMapping(IO &IO, WasmYAML::ProducersSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapOptional("Languages", Section.Languages);
  IO.mapOptional("Tools", Section.Tools);
  IO.mapOptional("SDKs", Section.SDKs);
}
 
static void sectionMapping(IO &IO, WasmYAML::TargetFeaturesSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapRequired("Features", Section.Features);
}
 
static void sectionMapping(IO &IO, WasmYAML::CustomSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Name", Section.Name);
  IO.mapRequired("Payload", Section.Payload);
}
 
static void sectionMapping(IO &IO, WasmYAML::TypeSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Signatures", Section.Signatures);
}
 
static void sectionMapping(IO &IO, WasmYAML::ImportSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Imports", Section.Imports);
}
 
static void sectionMapping(IO &IO, WasmYAML::FunctionSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("FunctionTypes", Section.FunctionTypes);
}
 
static void sectionMapping(IO &IO, WasmYAML::TableSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Tables", Section.Tables);
}
 
static void sectionMapping(IO &IO, WasmYAML::MemorySection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Memories", Section.Memories);
}
 
static void sectionMapping(IO &IO, WasmYAML::TagSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("TagTypes", Section.TagTypes);
}
 
static void sectionMapping(IO &IO, WasmYAML::GlobalSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Globals", Section.Globals);
}
 
static void sectionMapping(IO &IO, WasmYAML::ExportSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Exports", Section.Exports);
}
 
static void sectionMapping(IO &IO, WasmYAML::StartSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("StartFunction", Section.StartFunction);
}
 
static void sectionMapping(IO &IO, WasmYAML::ElemSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapOptional("Segments", Section.Segments);
}
 
static void sectionMapping(IO &IO, WasmYAML::CodeSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Functions", Section.Functions);
}
 
static void sectionMapping(IO &IO, WasmYAML::DataSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Segments", Section.Segments);
}
 
static void sectionMapping(IO &IO, WasmYAML::DataCountSection &Section) {
  commonSectionMapping(IO, Section);
  IO.mapRequired("Count", Section.Count);
}
 
void MappingTraits<std::unique_ptr<WasmYAML::Section>>::mapping(
    IO &IO, std::unique_ptr<WasmYAML::Section> &Section) {
  WasmYAML::SectionType SectionType;
  if (IO.outputting())
    SectionType = Section->Type;
  else
    IO.mapRequired("Type", SectionType);
 
  switch (SectionType) {
  case wasm::WASM_SEC_CUSTOM: {
    StringRef SectionName;
    if (IO.outputting()) {
      auto CustomSection = cast<WasmYAML::CustomSection>(Section.get());
      SectionName = CustomSection->Name;
    } else {
      IO.mapRequired("Name", SectionName);
    }
    if (SectionName == "dylink" || SectionName == "dylink.0") {
      if (!IO.outputting())
        Section.reset(new WasmYAML::DylinkSection());
      sectionMapping(IO, *cast<WasmYAML::DylinkSection>(Section.get()));
    } else if (SectionName == "linking") {
      if (!IO.outputting())
        Section.reset(new WasmYAML::LinkingSection());
      sectionMapping(IO, *cast<WasmYAML::LinkingSection>(Section.get()));
    } else if (SectionName == "name") {
      if (!IO.outputting())
        Section.reset(new WasmYAML::NameSection());
      sectionMapping(IO, *cast<WasmYAML::NameSection>(Section.get()));
    } else if (SectionName == "producers") {
      if (!IO.outputting())
        Section.reset(new WasmYAML::ProducersSection());
      sectionMapping(IO, *cast<WasmYAML::ProducersSection>(Section.get()));
    } else if (SectionName == "target_features") {
      if (!IO.outputting())
        Section.reset(new WasmYAML::TargetFeaturesSection());
      sectionMapping(IO, *cast<WasmYAML::TargetFeaturesSection>(Section.get()));
    } else {
      if (!IO.outputting())
        Section.reset(new WasmYAML::CustomSection(SectionName));
      sectionMapping(IO, *cast<WasmYAML::CustomSection>(Section.get()));
    }
    break;
  }
  case wasm::WASM_SEC_TYPE:
    if (!IO.outputting())
      Section.reset(new WasmYAML::TypeSection());
    sectionMapping(IO, *cast<WasmYAML::TypeSection>(Section.get()));
    break;
  case wasm::WASM_SEC_IMPORT:
    if (!IO.outputting())
      Section.reset(new WasmYAML::ImportSection());
    sectionMapping(IO, *cast<WasmYAML::ImportSection>(Section.get()));
    break;
  case wasm::WASM_SEC_FUNCTION:
    if (!IO.outputting())
      Section.reset(new WasmYAML::FunctionSection());
    sectionMapping(IO, *cast<WasmYAML::FunctionSection>(Section.get()));
    break;
  case wasm::WASM_SEC_TABLE:
    if (!IO.outputting())
      Section.reset(new WasmYAML::TableSection());
    sectionMapping(IO, *cast<WasmYAML::TableSection>(Section.get()));
    break;
  case wasm::WASM_SEC_MEMORY:
    if (!IO.outputting())
      Section.reset(new WasmYAML::MemorySection());
    sectionMapping(IO, *cast<WasmYAML::MemorySection>(Section.get()));
    break;
  case wasm::WASM_SEC_TAG:
    if (!IO.outputting())
      Section.reset(new WasmYAML::TagSection());
    sectionMapping(IO, *cast<WasmYAML::TagSection>(Section.get()));
    break;
  case wasm::WASM_SEC_GLOBAL:
    if (!IO.outputting())
      Section.reset(new WasmYAML::GlobalSection());
    sectionMapping(IO, *cast<WasmYAML::GlobalSection>(Section.get()));
    break;
  case wasm::WASM_SEC_EXPORT:
    if (!IO.outputting())
      Section.reset(new WasmYAML::ExportSection());
    sectionMapping(IO, *cast<WasmYAML::ExportSection>(Section.get()));
    break;
  case wasm::WASM_SEC_START:
    if (!IO.outputting())
      Section.reset(new WasmYAML::StartSection());
    sectionMapping(IO, *cast<WasmYAML::StartSection>(Section.get()));
    break;
  case wasm::WASM_SEC_ELEM:
    if (!IO.outputting())
      Section.reset(new WasmYAML::ElemSection());
    sectionMapping(IO, *cast<WasmYAML::ElemSection>(Section.get()));
    break;
  case wasm::WASM_SEC_CODE:
    if (!IO.outputting())
      Section.reset(new WasmYAML::CodeSection());
    sectionMapping(IO, *cast<WasmYAML::CodeSection>(Section.get()));
    break;
  case wasm::WASM_SEC_DATA:
    if (!IO.outputting())
      Section.reset(new WasmYAML::DataSection());
    sectionMapping(IO, *cast<WasmYAML::DataSection>(Section.get()));
    break;
  case wasm::WASM_SEC_DATACOUNT:
    if (!IO.outputting())
      Section.reset(new WasmYAML::DataCountSection());
    sectionMapping(IO, *cast<WasmYAML::DataCountSection>(Section.get()));
    break;
  default:
    llvm_unreachable("Unknown section type");
  }
}
 
void ScalarEnumerationTraits<WasmYAML::SectionType>::enumeration(
    IO &IO, WasmYAML::SectionType &Type) {
#define ECase(X) IO.enumCase(Type, #X, wasm::WASM_SEC_##X);
  ECase(CUSTOM);
  ECase(TYPE);
  ECase(IMPORT);
  ECase(FUNCTION);
  ECase(TABLE);
  ECase(MEMORY);
  ECase(GLOBAL);
  ECase(TAG);
  ECase(EXPORT);
  ECase(START);
  ECase(ELEM);
  ECase(CODE);
  ECase(DATA);
  ECase(DATACOUNT);
#undef ECase
}
 
void MappingTraits<WasmYAML::Signature>::mapping(
    IO &IO, WasmYAML::Signature &Signature) {
  IO.mapRequired("Index", Signature.Index);
  IO.mapRequired("ParamTypes", Signature.ParamTypes);
  IO.mapRequired("ReturnTypes", Signature.ReturnTypes);
}
 
void MappingTraits<WasmYAML::Table>::mapping(IO &IO, WasmYAML::Table &Table) {
  IO.mapRequired("Index", Table.Index);
  IO.mapRequired("ElemType", Table.ElemType);
  IO.mapRequired("Limits", Table.TableLimits);
}
 
void MappingTraits<WasmYAML::Function>::mapping(IO &IO,
                                                WasmYAML::Function &Function) {
  IO.mapRequired("Index", Function.Index);
  IO.mapRequired("Locals", Function.Locals);
  IO.mapRequired("Body", Function.Body);
}
 
void MappingTraits<WasmYAML::Relocation>::mapping(
    IO &IO, WasmYAML::Relocation &Relocation) {
  IO.mapRequired("Type", Relocation.Type);
  IO.mapRequired("Index", Relocation.Index);
  IO.mapRequired("Offset", Relocation.Offset);
  IO.mapOptional("Addend", Relocation.Addend, 0);
}
 
void MappingTraits<WasmYAML::NameEntry>::mapping(
    IO &IO, WasmYAML::NameEntry &NameEntry) {
  IO.mapRequired("Index", NameEntry.Index);
  IO.mapRequired("Name", NameEntry.Name);
}
 
void MappingTraits<WasmYAML::ProducerEntry>::mapping(
    IO &IO, WasmYAML::ProducerEntry &ProducerEntry) {
  IO.mapRequired("Name", ProducerEntry.Name);
  IO.mapRequired("Version", ProducerEntry.Version);
}
 
void ScalarEnumerationTraits<WasmYAML::FeaturePolicyPrefix>::enumeration(
    IO &IO, WasmYAML::FeaturePolicyPrefix &Kind) {
#define ECase(X) IO.enumCase(Kind, #X, wasm::WASM_FEATURE_PREFIX_##X);
  ECase(USED);
  ECase(DISALLOWED);
#undef ECase
}
 
void MappingTraits<WasmYAML::FeatureEntry>::mapping(
    IO &IO, WasmYAML::FeatureEntry &FeatureEntry) {
  IO.mapRequired("Prefix", FeatureEntry.Prefix);
  IO.mapRequired("Name", FeatureEntry.Name);
}
 
void MappingTraits<WasmYAML::SegmentInfo>::mapping(
    IO &IO, WasmYAML::SegmentInfo &SegmentInfo) {
  IO.mapRequired("Index", SegmentInfo.Index);
  IO.mapRequired("Name", SegmentInfo.Name);
  IO.mapRequired("Alignment", SegmentInfo.Alignment);
  IO.mapRequired("Flags", SegmentInfo.Flags);
}
 
void MappingTraits<WasmYAML::LocalDecl>::mapping(
    IO &IO, WasmYAML::LocalDecl &LocalDecl) {
  IO.mapRequired("Type", LocalDecl.Type);
  IO.mapRequired("Count", LocalDecl.Count);
}
 
void MappingTraits<WasmYAML::Limits>::mapping(IO &IO,
                                              WasmYAML::Limits &Limits) {
  IO.mapOptional("Flags", Limits.Flags, 0);
  IO.mapRequired("Minimum", Limits.Minimum);
  if (!IO.outputting() || Limits.Flags & wasm::WASM_LIMITS_FLAG_HAS_MAX)
    IO.mapOptional("Maximum", Limits.Maximum);
  if (!IO.outputting() || Limits.Flags & wasm::WASM_LIMITS_FLAG_HAS_PAGE_SIZE)
    IO.mapOptional("PageSize", Limits.PageSize);
}
 
void MappingTraits<WasmYAML::ElemSegment>::mapping(
    IO &IO, WasmYAML::ElemSegment &Segment) {
  IO.mapOptional("Flags", Segment.Flags, 0);
  if (!IO.outputting() ||
      Segment.Flags & wasm::WASM_ELEM_SEGMENT_HAS_TABLE_NUMBER)
    IO.mapOptional("TableNumber", Segment.TableNumber);
  if (!IO.outputting() ||
      Segment.Flags & wasm::WASM_ELEM_SEGMENT_MASK_HAS_ELEM_DESC)
    IO.mapOptional("ElemKind", Segment.ElemKind);
  // TODO: Omit "offset" for passive segments? It's neither meaningful nor
  // encoded.
  IO.mapRequired("Offset", Segment.Offset);
  IO.mapRequired("Functions", Segment.Functions);
}
 
void MappingTraits<WasmYAML::Import>::mapping(IO &IO,
                                              WasmYAML::Import &Import) {
  IO.mapRequired("Module", Import.Module);
  IO.mapRequired("Field", Import.Field);
  IO.mapRequired("Kind", Import.Kind);
  if (Import.Kind == wasm::WASM_EXTERNAL_FUNCTION ||
      Import.Kind == wasm::WASM_EXTERNAL_TAG) {
    IO.mapRequired("SigIndex", Import.SigIndex);
  } else if (Import.Kind == wasm::WASM_EXTERNAL_GLOBAL) {
    IO.mapRequired("GlobalType", Import.GlobalImport.Type);
    IO.mapRequired("GlobalMutable", Import.GlobalImport.Mutable);
  } else if (Import.Kind == wasm::WASM_EXTERNAL_TABLE) {
    IO.mapRequired("Table", Import.TableImport);
  } else if (Import.Kind == wasm::WASM_EXTERNAL_MEMORY) {
    IO.mapRequired("Memory", Import.Memory);
  } else {
    llvm_unreachable("unhandled import type");
  }
}
 
void MappingTraits<WasmYAML::Export>::mapping(IO &IO,
                                              WasmYAML::Export &Export) {
  IO.mapRequired("Name", Export.Name);
  IO.mapRequired("Kind", Export.Kind);
  IO.mapRequired("Index", Export.Index);
}
 
void MappingTraits<WasmYAML::Global>::mapping(IO &IO,
                                              WasmYAML::Global &Global) {
  IO.mapRequired("Index", Global.Index);
  IO.mapRequired("Type", Global.Type);
  IO.mapRequired("Mutable", Global.Mutable);
  IO.mapRequired("InitExpr", Global.Init);
}
 
void MappingTraits<WasmYAML::InitExpr>::mapping(IO &IO,
                                                WasmYAML::InitExpr &Expr) {
  IO.mapOptional("Extended", Expr.Extended, false);
  if (Expr.Extended) {
    IO.mapRequired("Body", Expr.Body);
  } else {
    WasmYAML::Opcode Op = Expr.Inst.Opcode;
    IO.mapRequired("Opcode", Op);
    Expr.Inst.Opcode = Op;
    switch (Expr.Inst.Opcode) {
    case wasm::WASM_OPCODE_I32_CONST:
      IO.mapRequired("Value", Expr.Inst.Value.Int32);
      break;
    case wasm::WASM_OPCODE_I64_CONST:
      IO.mapRequired("Value", Expr.Inst.Value.Int64);
      break;
    case wasm::WASM_OPCODE_F32_CONST:
      IO.mapRequired("Value", Expr.Inst.Value.Float32);
      break;
    case wasm::WASM_OPCODE_F64_CONST:
      IO.mapRequired("Value", Expr.Inst.Value.Float64);
      break;
    case wasm::WASM_OPCODE_GLOBAL_GET:
      IO.mapRequired("Index", Expr.Inst.Value.Global);
      break;
    case wasm::WASM_OPCODE_REF_NULL: {
      WasmYAML::ValueType Ty = wasm::WASM_TYPE_EXTERNREF;
      IO.mapRequired("Type", Ty);
      break;
    }
    }
  }
}
 
void MappingTraits<WasmYAML::DataSegment>::mapping(
    IO &IO, WasmYAML::DataSegment &Segment) {
  IO.mapOptional("SectionOffset", Segment.SectionOffset);
  IO.mapRequired("InitFlags", Segment.InitFlags);
  if (Segment.InitFlags & wasm::WASM_DATA_SEGMENT_HAS_MEMINDEX) {
    IO.mapRequired("MemoryIndex", Segment.MemoryIndex);
  } else {
    Segment.MemoryIndex = 0;
  }
  if ((Segment.InitFlags & wasm::WASM_DATA_SEGMENT_IS_PASSIVE) == 0) {
    IO.mapRequired("Offset", Segment.Offset);
  } else {
    Segment.Offset.Inst.Opcode = wasm::WASM_OPCODE_I32_CONST;
    Segment.Offset.Inst.Value.Int32 = 0;
  }
  IO.mapRequired("Content", Segment.Content);
}
 
void MappingTraits<WasmYAML::InitFunction>::mapping(
    IO &IO, WasmYAML::InitFunction &Init) {
  IO.mapRequired("Priority", Init.Priority);
  IO.mapRequired("Symbol", Init.Symbol);
}
 
void ScalarEnumerationTraits<WasmYAML::ComdatKind>::enumeration(
    IO &IO, WasmYAML::ComdatKind &Kind) {
#define ECase(X) IO.enumCase(Kind, #X, wasm::WASM_COMDAT_##X);
  ECase(FUNCTION);
  ECase(DATA);
  ECase(SECTION);
#undef ECase
}
 
void MappingTraits<WasmYAML::ComdatEntry>::mapping(
    IO &IO, WasmYAML::ComdatEntry &ComdatEntry) {
  IO.mapRequired("Kind", ComdatEntry.Kind);
  IO.mapRequired("Index", ComdatEntry.Index);
}
 
void MappingTraits<WasmYAML::Comdat>::mapping(IO &IO,
                                              WasmYAML::Comdat &Comdat) {
  IO.mapRequired("Name", Comdat.Name);
  IO.mapRequired("Entries", Comdat.Entries);
}
 
void MappingTraits<WasmYAML::SymbolInfo>::mapping(IO &IO,
                                                  WasmYAML::SymbolInfo &Info) {
  IO.mapRequired("Index", Info.Index);
  IO.mapRequired("Kind", Info.Kind);
  if (Info.Kind != wasm::WASM_SYMBOL_TYPE_SECTION)
    IO.mapRequired("Name", Info.Name);
  IO.mapRequired("Flags", Info.Flags);
  if (Info.Kind == wasm::WASM_SYMBOL_TYPE_FUNCTION) {
    IO.mapRequired("Function", Info.ElementIndex);
  } else if (Info.Kind == wasm::WASM_SYMBOL_TYPE_GLOBAL) {
    IO.mapRequired("Global", Info.ElementIndex);
  } else if (Info.Kind == wasm::WASM_SYMBOL_TYPE_TABLE) {
    IO.mapRequired("Table", Info.ElementIndex);
  } else if (Info.Kind == wasm::WASM_SYMBOL_TYPE_TAG) {
    IO.mapRequired("Tag", Info.ElementIndex);
  } else if (Info.Kind == wasm::WASM_SYMBOL_TYPE_DATA) {
    if ((Info.Flags & wasm::WASM_SYMBOL_UNDEFINED) == 0) {
      if ((Info.Flags & wasm::WASM_SYMBOL_BINDING_MASK) ==
          wasm::WASM_SYMBOL_BINDING_COMMON) {
        IO.mapRequired("Size", Info.CommonRef.Size);
        IO.mapRequired("Align", Info.CommonRef.Alignment);
      } else {
        if ((Info.Flags & wasm::WASM_SYMBOL_ABSOLUTE) == 0) {
          IO.mapRequired("Segment", Info.DataRef.Segment);
        }
        IO.mapOptional("Offset", Info.DataRef.Offset, 0u);
        IO.mapRequired("Size", Info.DataRef.Size);
      }
    }
  } else if (Info.Kind == wasm::WASM_SYMBOL_TYPE_SECTION) {
    IO.mapRequired("Section", Info.ElementIndex);
  } else {
    llvm_unreachable("unsupported symbol kind");
  }
}
 
void MappingTraits<WasmYAML::DylinkImportInfo>::mapping(
    IO &IO, WasmYAML::DylinkImportInfo &Info) {
  IO.mapRequired("Module", Info.Module);
  IO.mapRequired("Field", Info.Field);
  IO.mapRequired("Flags", Info.Flags);
}
 
void MappingTraits<WasmYAML::DylinkExportInfo>::mapping(
    IO &IO, WasmYAML::DylinkExportInfo &Info) {
  IO.mapRequired("Name", Info.Name);
  IO.mapRequired("Flags", Info.Flags);
}
 
void ScalarBitSetTraits<WasmYAML::LimitFlags>::bitset(
    IO &IO, WasmYAML::LimitFlags &Value) {
#define BCase(X) IO.bitSetCase(Value, #X, wasm::WASM_LIMITS_FLAG_##X)
  BCase(HAS_MAX);
  BCase(IS_SHARED);
  BCase(IS_64);
  BCase(HAS_PAGE_SIZE);
#undef BCase
}
 
void ScalarBitSetTraits<WasmYAML::SegmentFlags>::bitset(
    IO &IO, WasmYAML::SegmentFlags &Value) {
#define BCase(X) IO.bitSetCase(Value, #X, wasm::WASM_SEG_FLAG_##X)
  BCase(STRINGS);
  BCase(TLS);
  BCase(RETAIN);
#undef BCase
}
 
void ScalarBitSetTraits<WasmYAML::SymbolFlags>::bitset(
    IO &IO, WasmYAML::SymbolFlags &Value) {
#define BCaseMask(M, X)                                                        \
  IO.maskedBitSetCase(Value, #X, wasm::WASM_SYMBOL_##X, wasm::WASM_SYMBOL_##M)
  // BCaseMask(BINDING_MASK, BINDING_GLOBAL);
  BCaseMask(BINDING_MASK, BINDING_WEAK);
  BCaseMask(BINDING_MASK, BINDING_LOCAL);
  BCaseMask(BINDING_MASK, BINDING_COMMON);
  // BCaseMask(VISIBILITY_MASK, VISIBILITY_DEFAULT);
  BCaseMask(VISIBILITY_MASK, VISIBILITY_HIDDEN);
  BCaseMask(UNDEFINED, UNDEFINED);
  BCaseMask(EXPORTED, EXPORTED);
  BCaseMask(EXPLICIT_NAME, EXPLICIT_NAME);
  BCaseMask(NO_STRIP, NO_STRIP);
  BCaseMask(TLS, TLS);
  BCaseMask(ABSOLUTE, ABSOLUTE);
#undef BCaseMask
}
 
void ScalarEnumerationTraits<WasmYAML::SymbolKind>::enumeration(
    IO &IO, WasmYAML::SymbolKind &Kind) {
#define ECase(X) IO.enumCase(Kind, #X, wasm::WASM_SYMBOL_TYPE_##X);
  ECase(FUNCTION);
  ECase(DATA);
  ECase(GLOBAL);
  ECase(TABLE);
  ECase(SECTION);
  ECase(TAG);
#undef ECase
}
 
void ScalarEnumerationTraits<WasmYAML::ValueType>::enumeration(
    IO &IO, WasmYAML::ValueType &Type) {
#define CONCAT(X) (uint32_t) wasm::ValType::X
#define ECase(X) IO.enumCase(Type, #X, CONCAT(X));
  ECase(I32);
  ECase(I64);
  ECase(F32);
  ECase(F64);
  ECase(V128);
  ECase(FUNCREF);
  ECase(EXTERNREF);
  ECase(EXNREF);
  ECase(OTHERREF);
#undef ECase
}
 
void ScalarEnumerationTraits<WasmYAML::ExportKind>::enumeration(
    IO &IO, WasmYAML::ExportKind &Kind) {
#define ECase(X) IO.enumCase(Kind, #X, wasm::WASM_EXTERNAL_##X);
  ECase(FUNCTION);
  ECase(TABLE);
  ECase(MEMORY);
  ECase(GLOBAL);
  ECase(TAG);
#undef ECase
}
 
void ScalarEnumerationTraits<WasmYAML::Opcode>::enumeration(
    IO &IO, WasmYAML::Opcode &Code) {
#define ECase(X) IO.enumCase(Code, #X, wasm::WASM_OPCODE_##X);
  ECase(END);
  ECase(I32_CONST);
  ECase(I64_CONST);
  ECase(F64_CONST);
  ECase(F32_CONST);
  ECase(GLOBAL_GET);
  ECase(REF_NULL);
#undef ECase
}
 
void ScalarEnumerationTraits<WasmYAML::TableType>::enumeration(
    IO &IO, WasmYAML::TableType &Type) {
#define CONCAT(X) (uint32_t) wasm::ValType::X
#define ECase(X) IO.enumCase(Type, #X, CONCAT(X));
  ECase(FUNCREF);
  ECase(EXTERNREF);
  ECase(EXNREF);
  ECase(OTHERREF);
#undef ECase
}
 
void ScalarEnumerationTraits<WasmYAML::RelocType>::enumeration(
    IO &IO, WasmYAML::RelocType &Type) {
#define WASM_RELOC(name, value) IO.enumCase(Type, #name, wasm::name);
#include "llvm/BinaryFormat/WasmRelocs.def"
#undef WASM_RELOC
  IO.enumFallback<Hex32>(Type);
}
 
} // end namespace yaml
 
} // end namespace llvm