mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
372cf2c00b
Summary: This ensures that object files will continue to validate as WebAssembly modules in the presence of bulk memory operations. Engines that don't support bulk memory operations will not recognize the DataCount section and will report validation errors, but that's ok because object files aren't supposed to be run directly anyway. Reviewers: aheejin, dschuff, sbc100 Subscribers: jgravelle-google, hiraditya, sunfish, rupprecht, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D60623 llvm-svn: 358315
392 lines
13 KiB
C++
392 lines
13 KiB
C++
//===------ utils/wasm2yaml.cpp - obj2yaml conversion tool ------*- C++ -*-===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "obj2yaml.h"
|
|
#include "llvm/Object/COFF.h"
|
|
#include "llvm/ObjectYAML/WasmYAML.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/YAMLTraits.h"
|
|
|
|
using namespace llvm;
|
|
using object::WasmSection;
|
|
|
|
namespace {
|
|
|
|
class WasmDumper {
|
|
const object::WasmObjectFile &Obj;
|
|
|
|
public:
|
|
WasmDumper(const object::WasmObjectFile &O) : Obj(O) {}
|
|
|
|
ErrorOr<WasmYAML::Object *> dump();
|
|
|
|
std::unique_ptr<WasmYAML::CustomSection>
|
|
dumpCustomSection(const WasmSection &WasmSec);
|
|
};
|
|
|
|
} // namespace
|
|
|
|
static WasmYAML::Table makeTable(const wasm::WasmTable &Table) {
|
|
WasmYAML::Table T;
|
|
T.ElemType = Table.ElemType;
|
|
T.TableLimits.Flags = Table.Limits.Flags;
|
|
T.TableLimits.Initial = Table.Limits.Initial;
|
|
T.TableLimits.Maximum = Table.Limits.Maximum;
|
|
return T;
|
|
}
|
|
|
|
static WasmYAML::Limits makeLimits(const wasm::WasmLimits &Limits) {
|
|
WasmYAML::Limits L;
|
|
L.Flags = Limits.Flags;
|
|
L.Initial = Limits.Initial;
|
|
L.Maximum = Limits.Maximum;
|
|
return L;
|
|
}
|
|
|
|
std::unique_ptr<WasmYAML::CustomSection>
|
|
WasmDumper::dumpCustomSection(const WasmSection &WasmSec) {
|
|
std::unique_ptr<WasmYAML::CustomSection> CustomSec;
|
|
if (WasmSec.Name == "dylink") {
|
|
std::unique_ptr<WasmYAML::DylinkSection> DylinkSec =
|
|
make_unique<WasmYAML::DylinkSection>();
|
|
const wasm::WasmDylinkInfo& Info = Obj.dylinkInfo();
|
|
DylinkSec->MemorySize = Info.MemorySize;
|
|
DylinkSec->MemoryAlignment = Info.MemoryAlignment;
|
|
DylinkSec->TableSize = Info.TableSize;
|
|
DylinkSec->TableAlignment = Info.TableAlignment;
|
|
DylinkSec->Needed = Info.Needed;
|
|
CustomSec = std::move(DylinkSec);
|
|
} else if (WasmSec.Name == "name") {
|
|
std::unique_ptr<WasmYAML::NameSection> NameSec =
|
|
make_unique<WasmYAML::NameSection>();
|
|
for (const llvm::wasm::WasmFunctionName &Func : Obj.debugNames()) {
|
|
WasmYAML::NameEntry NameEntry;
|
|
NameEntry.Name = Func.Name;
|
|
NameEntry.Index = Func.Index;
|
|
NameSec->FunctionNames.push_back(NameEntry);
|
|
}
|
|
CustomSec = std::move(NameSec);
|
|
} else if (WasmSec.Name == "linking") {
|
|
std::unique_ptr<WasmYAML::LinkingSection> LinkingSec =
|
|
make_unique<WasmYAML::LinkingSection>();
|
|
LinkingSec->Version = Obj.linkingData().Version;
|
|
|
|
ArrayRef<StringRef> Comdats = Obj.linkingData().Comdats;
|
|
for (StringRef ComdatName : Comdats)
|
|
LinkingSec->Comdats.emplace_back(WasmYAML::Comdat{ComdatName, {}});
|
|
for (auto &Func : Obj.functions()) {
|
|
if (Func.Comdat != UINT32_MAX) {
|
|
LinkingSec->Comdats[Func.Comdat].Entries.emplace_back(
|
|
WasmYAML::ComdatEntry{wasm::WASM_COMDAT_FUNCTION, Func.Index});
|
|
}
|
|
}
|
|
|
|
uint32_t SegmentIndex = 0;
|
|
for (const object::WasmSegment &Segment : Obj.dataSegments()) {
|
|
if (!Segment.Data.Name.empty()) {
|
|
WasmYAML::SegmentInfo SegmentInfo;
|
|
SegmentInfo.Name = Segment.Data.Name;
|
|
SegmentInfo.Index = SegmentIndex;
|
|
SegmentInfo.Alignment = Segment.Data.Alignment;
|
|
SegmentInfo.Flags = Segment.Data.LinkerFlags;
|
|
LinkingSec->SegmentInfos.push_back(SegmentInfo);
|
|
}
|
|
if (Segment.Data.Comdat != UINT32_MAX) {
|
|
LinkingSec->Comdats[Segment.Data.Comdat].Entries.emplace_back(
|
|
WasmYAML::ComdatEntry{wasm::WASM_COMDAT_DATA, SegmentIndex});
|
|
}
|
|
SegmentIndex++;
|
|
}
|
|
|
|
uint32_t SymbolIndex = 0;
|
|
for (const wasm::WasmSymbolInfo &Symbol : Obj.linkingData().SymbolTable) {
|
|
WasmYAML::SymbolInfo Info;
|
|
Info.Index = SymbolIndex++;
|
|
Info.Kind = static_cast<uint32_t>(Symbol.Kind);
|
|
Info.Name = Symbol.Name;
|
|
Info.Flags = Symbol.Flags;
|
|
switch (Symbol.Kind) {
|
|
case wasm::WASM_SYMBOL_TYPE_DATA:
|
|
Info.DataRef = Symbol.DataRef;
|
|
break;
|
|
case wasm::WASM_SYMBOL_TYPE_FUNCTION:
|
|
case wasm::WASM_SYMBOL_TYPE_GLOBAL:
|
|
case wasm::WASM_SYMBOL_TYPE_EVENT:
|
|
Info.ElementIndex = Symbol.ElementIndex;
|
|
break;
|
|
case wasm::WASM_SYMBOL_TYPE_SECTION:
|
|
Info.ElementIndex = Symbol.ElementIndex;
|
|
break;
|
|
}
|
|
LinkingSec->SymbolTable.emplace_back(Info);
|
|
}
|
|
|
|
for (const wasm::WasmInitFunc &Func : Obj.linkingData().InitFunctions) {
|
|
WasmYAML::InitFunction F{Func.Priority, Func.Symbol};
|
|
LinkingSec->InitFunctions.emplace_back(F);
|
|
}
|
|
|
|
CustomSec = std::move(LinkingSec);
|
|
} else if (WasmSec.Name == "producers") {
|
|
std::unique_ptr<WasmYAML::ProducersSection> ProducersSec =
|
|
make_unique<WasmYAML::ProducersSection>();
|
|
const llvm::wasm::WasmProducerInfo &Info = Obj.getProducerInfo();
|
|
for (auto &E : Info.Languages) {
|
|
WasmYAML::ProducerEntry Producer;
|
|
Producer.Name = E.first;
|
|
Producer.Version = E.second;
|
|
ProducersSec->Languages.push_back(Producer);
|
|
}
|
|
for (auto &E : Info.Tools) {
|
|
WasmYAML::ProducerEntry Producer;
|
|
Producer.Name = E.first;
|
|
Producer.Version = E.second;
|
|
ProducersSec->Tools.push_back(Producer);
|
|
}
|
|
for (auto &E : Info.SDKs) {
|
|
WasmYAML::ProducerEntry Producer;
|
|
Producer.Name = E.first;
|
|
Producer.Version = E.second;
|
|
ProducersSec->SDKs.push_back(Producer);
|
|
}
|
|
CustomSec = std::move(ProducersSec);
|
|
} else if (WasmSec.Name == "target_features") {
|
|
std::unique_ptr<WasmYAML::TargetFeaturesSection> TargetFeaturesSec =
|
|
make_unique<WasmYAML::TargetFeaturesSection>();
|
|
for (auto &E : Obj.getTargetFeatures()) {
|
|
WasmYAML::FeatureEntry Feature;
|
|
Feature.Prefix = E.Prefix;
|
|
Feature.Name = E.Name;
|
|
TargetFeaturesSec->Features.push_back(Feature);
|
|
}
|
|
CustomSec = std::move(TargetFeaturesSec);
|
|
} else {
|
|
CustomSec = make_unique<WasmYAML::CustomSection>(WasmSec.Name);
|
|
}
|
|
CustomSec->Payload = yaml::BinaryRef(WasmSec.Content);
|
|
return CustomSec;
|
|
}
|
|
|
|
ErrorOr<WasmYAML::Object *> WasmDumper::dump() {
|
|
auto Y = make_unique<WasmYAML::Object>();
|
|
|
|
// Dump header
|
|
Y->Header.Version = Obj.getHeader().Version;
|
|
|
|
// Dump sections
|
|
for (const auto &Sec : Obj.sections()) {
|
|
const WasmSection &WasmSec = Obj.getWasmSection(Sec);
|
|
std::unique_ptr<WasmYAML::Section> S;
|
|
switch (WasmSec.Type) {
|
|
case wasm::WASM_SEC_CUSTOM: {
|
|
if (WasmSec.Name.startswith("reloc.")) {
|
|
// Relocations are attached the sections they apply to rather than
|
|
// being represented as a custom section in the YAML output.
|
|
continue;
|
|
}
|
|
S = dumpCustomSection(WasmSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_TYPE: {
|
|
auto TypeSec = make_unique<WasmYAML::TypeSection>();
|
|
uint32_t Index = 0;
|
|
for (const auto &FunctionSig : Obj.types()) {
|
|
WasmYAML::Signature Sig;
|
|
Sig.Index = Index++;
|
|
Sig.ReturnType = wasm::WASM_TYPE_NORESULT;
|
|
assert(FunctionSig.Returns.size() <= 1 &&
|
|
"Functions with multiple returns are not supported");
|
|
if (FunctionSig.Returns.size())
|
|
Sig.ReturnType = static_cast<uint32_t>(FunctionSig.Returns[0]);
|
|
for (const auto &ParamType : FunctionSig.Params)
|
|
Sig.ParamTypes.emplace_back(static_cast<uint32_t>(ParamType));
|
|
TypeSec->Signatures.push_back(Sig);
|
|
}
|
|
S = std::move(TypeSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_IMPORT: {
|
|
auto ImportSec = make_unique<WasmYAML::ImportSection>();
|
|
for (auto &Import : Obj.imports()) {
|
|
WasmYAML::Import Im;
|
|
Im.Module = Import.Module;
|
|
Im.Field = Import.Field;
|
|
Im.Kind = Import.Kind;
|
|
switch (Im.Kind) {
|
|
case wasm::WASM_EXTERNAL_FUNCTION:
|
|
Im.SigIndex = Import.SigIndex;
|
|
break;
|
|
case wasm::WASM_EXTERNAL_GLOBAL:
|
|
Im.GlobalImport.Type = Import.Global.Type;
|
|
Im.GlobalImport.Mutable = Import.Global.Mutable;
|
|
break;
|
|
case wasm::WASM_EXTERNAL_EVENT:
|
|
Im.EventImport.Attribute = Import.Event.Attribute;
|
|
Im.EventImport.SigIndex = Import.Event.SigIndex;
|
|
break;
|
|
case wasm::WASM_EXTERNAL_TABLE:
|
|
Im.TableImport = makeTable(Import.Table);
|
|
break;
|
|
case wasm::WASM_EXTERNAL_MEMORY:
|
|
Im.Memory = makeLimits(Import.Memory);
|
|
break;
|
|
}
|
|
ImportSec->Imports.push_back(Im);
|
|
}
|
|
S = std::move(ImportSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_FUNCTION: {
|
|
auto FuncSec = make_unique<WasmYAML::FunctionSection>();
|
|
for (const auto &Func : Obj.functionTypes()) {
|
|
FuncSec->FunctionTypes.push_back(Func);
|
|
}
|
|
S = std::move(FuncSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_TABLE: {
|
|
auto TableSec = make_unique<WasmYAML::TableSection>();
|
|
for (const wasm::WasmTable &Table : Obj.tables()) {
|
|
TableSec->Tables.push_back(makeTable(Table));
|
|
}
|
|
S = std::move(TableSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_MEMORY: {
|
|
auto MemorySec = make_unique<WasmYAML::MemorySection>();
|
|
for (const wasm::WasmLimits &Memory : Obj.memories()) {
|
|
MemorySec->Memories.push_back(makeLimits(Memory));
|
|
}
|
|
S = std::move(MemorySec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_GLOBAL: {
|
|
auto GlobalSec = make_unique<WasmYAML::GlobalSection>();
|
|
for (auto &Global : Obj.globals()) {
|
|
WasmYAML::Global G;
|
|
G.Index = Global.Index;
|
|
G.Type = Global.Type.Type;
|
|
G.Mutable = Global.Type.Mutable;
|
|
G.InitExpr = Global.InitExpr;
|
|
GlobalSec->Globals.push_back(G);
|
|
}
|
|
S = std::move(GlobalSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_EVENT: {
|
|
auto EventSec = make_unique<WasmYAML::EventSection>();
|
|
for (auto &Event : Obj.events()) {
|
|
WasmYAML::Event E;
|
|
E.Index = Event.Index;
|
|
E.Attribute = Event.Type.Attribute;
|
|
E.SigIndex = Event.Type.SigIndex;
|
|
EventSec->Events.push_back(E);
|
|
}
|
|
S = std::move(EventSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_START: {
|
|
auto StartSec = make_unique<WasmYAML::StartSection>();
|
|
StartSec->StartFunction = Obj.startFunction();
|
|
S = std::move(StartSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_EXPORT: {
|
|
auto ExportSec = make_unique<WasmYAML::ExportSection>();
|
|
for (auto &Export : Obj.exports()) {
|
|
WasmYAML::Export Ex;
|
|
Ex.Name = Export.Name;
|
|
Ex.Kind = Export.Kind;
|
|
Ex.Index = Export.Index;
|
|
ExportSec->Exports.push_back(Ex);
|
|
}
|
|
S = std::move(ExportSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_ELEM: {
|
|
auto ElemSec = make_unique<WasmYAML::ElemSection>();
|
|
for (auto &Segment : Obj.elements()) {
|
|
WasmYAML::ElemSegment Seg;
|
|
Seg.TableIndex = Segment.TableIndex;
|
|
Seg.Offset = Segment.Offset;
|
|
for (auto &Func : Segment.Functions) {
|
|
Seg.Functions.push_back(Func);
|
|
}
|
|
ElemSec->Segments.push_back(Seg);
|
|
}
|
|
S = std::move(ElemSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_CODE: {
|
|
auto CodeSec = make_unique<WasmYAML::CodeSection>();
|
|
for (auto &Func : Obj.functions()) {
|
|
WasmYAML::Function Function;
|
|
Function.Index = Func.Index;
|
|
for (auto &Local : Func.Locals) {
|
|
WasmYAML::LocalDecl LocalDecl;
|
|
LocalDecl.Type = Local.Type;
|
|
LocalDecl.Count = Local.Count;
|
|
Function.Locals.push_back(LocalDecl);
|
|
}
|
|
Function.Body = yaml::BinaryRef(Func.Body);
|
|
CodeSec->Functions.push_back(Function);
|
|
}
|
|
S = std::move(CodeSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_DATA: {
|
|
auto DataSec = make_unique<WasmYAML::DataSection>();
|
|
for (const object::WasmSegment &Segment : Obj.dataSegments()) {
|
|
WasmYAML::DataSegment Seg;
|
|
Seg.SectionOffset = Segment.SectionOffset;
|
|
Seg.InitFlags = Segment.Data.InitFlags;
|
|
Seg.MemoryIndex = Segment.Data.MemoryIndex;
|
|
Seg.Offset = Segment.Data.Offset;
|
|
Seg.Content = yaml::BinaryRef(Segment.Data.Content);
|
|
DataSec->Segments.push_back(Seg);
|
|
}
|
|
S = std::move(DataSec);
|
|
break;
|
|
}
|
|
case wasm::WASM_SEC_DATACOUNT: {
|
|
auto DataCountSec = make_unique<WasmYAML::DataCountSection>();
|
|
DataCountSec->Count = Obj.dataSegments().size();
|
|
S = std::move(DataCountSec);
|
|
break;
|
|
}
|
|
default:
|
|
llvm_unreachable("Unknown section type");
|
|
break;
|
|
}
|
|
for (const wasm::WasmRelocation &Reloc : WasmSec.Relocations) {
|
|
WasmYAML::Relocation R;
|
|
R.Type = Reloc.Type;
|
|
R.Index = Reloc.Index;
|
|
R.Offset = Reloc.Offset;
|
|
R.Addend = Reloc.Addend;
|
|
S->Relocations.push_back(R);
|
|
}
|
|
Y->Sections.push_back(std::move(S));
|
|
}
|
|
|
|
return Y.release();
|
|
}
|
|
|
|
std::error_code wasm2yaml(raw_ostream &Out, const object::WasmObjectFile &Obj) {
|
|
WasmDumper Dumper(Obj);
|
|
ErrorOr<WasmYAML::Object *> YAMLOrErr = Dumper.dump();
|
|
if (std::error_code EC = YAMLOrErr.getError())
|
|
return EC;
|
|
|
|
std::unique_ptr<WasmYAML::Object> YAML(YAMLOrErr.get());
|
|
yaml::Output Yout(Out);
|
|
Yout << *YAML;
|
|
|
|
return std::error_code();
|
|
}
|