mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-02-01 05:01:59 +01:00
6ed66fd14e
This is combination of two patches by Nicholas Wilson: 1. https://reviews.llvm.org/D41954 2. https://reviews.llvm.org/D42495 Along with a few local modifications: - One change I made was to add the UNDEFINED bit to the binary format to avoid the extra byte used when writing data symbols. Although this bit is redundant for other symbols types (i.e. undefined can be implied if a function or global is a wasm import) - I prefer to be explicit and consistent and not have derived flags. - Some field renaming. - Some reverting of unrelated minor changes. - No test output differences. Differential Revision: https://reviews.llvm.org/D43147 llvm-svn: 325860
315 lines
10 KiB
C++
315 lines
10 KiB
C++
//===------ utils/wasm2yaml.cpp - obj2yaml conversion tool ------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#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 make_table(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 make_limits(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 == "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>();
|
|
std::map<StringRef,size_t> ComdatIndexes;
|
|
for (StringRef ComdatName : Obj.comdats()) {
|
|
ComdatIndexes[ComdatName] = LinkingSec->Comdats.size();
|
|
LinkingSec->Comdats.emplace_back(WasmYAML::Comdat{ComdatName, {}});
|
|
}
|
|
for (auto &Func : Obj.functions()) {
|
|
if (!Func.Comdat.empty()) {
|
|
auto &Comdat = LinkingSec->Comdats[ComdatIndexes[Func.Comdat]];
|
|
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.Flags;
|
|
LinkingSec->SegmentInfos.push_back(SegmentInfo);
|
|
}
|
|
if (!Segment.Data.Comdat.empty()) {
|
|
auto &Comdat = LinkingSec->Comdats[ComdatIndexes[Segment.Data.Comdat]];
|
|
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:
|
|
Info.ElementIndex = Symbol.ElementIndex;
|
|
break;
|
|
}
|
|
LinkingSec->SymbolTable.emplace_back(Info);
|
|
}
|
|
LinkingSec->DataSize = Obj.linkingData().DataSize;
|
|
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 {
|
|
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 = FunctionSig.ReturnType;
|
|
for (const auto &ParamType : FunctionSig.ParamTypes)
|
|
Sig.ParamTypes.push_back(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_TABLE:
|
|
Im.TableImport = make_table(Import.Table);
|
|
break;
|
|
case wasm::WASM_EXTERNAL_MEMORY:
|
|
Im.Memory = make_limits(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(make_table(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(make_limits(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_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.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;
|
|
}
|
|
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();
|
|
}
|