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/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "wabt/binary-reader-ir.h"
#include <cassert>
#include <cinttypes>
#include <cstdarg>
#include <cstdint>
#include <cstdio>
#include <deque>
#include <vector>
#include "wabt/binary-reader-nop.h"
#include "wabt/cast.h"
#include "wabt/common.h"
#include "wabt/ir.h"
namespace wabt {
namespace {
struct LabelNode {
LabelNode(LabelType, ExprList* exprs, Expr* context = nullptr);
LabelType label_type;
ExprList* exprs;
Expr* context;
};
LabelNode::LabelNode(LabelType label_type, ExprList* exprs, Expr* context)
: label_type(label_type), exprs(exprs), context(context) {}
class CodeMetadataExprQueue {
private:
struct Entry {
Func* func;
std::deque<std::unique_ptr<CodeMetadataExpr>> func_queue;
Entry(Func* f) : func(f) {}
};
std::deque<Entry> entries;
public:
CodeMetadataExprQueue() {}
void push_func(Func* f) { entries.emplace_back(f); }
void push_metadata(std::unique_ptr<CodeMetadataExpr> meta) {
assert(!entries.empty());
entries.back().func_queue.push_back(std::move(meta));
}
std::unique_ptr<CodeMetadataExpr> pop_match(Func* f, Offset offset) {
std::unique_ptr<CodeMetadataExpr> ret;
if (entries.empty()) {
return ret;
}
auto& current_entry = entries.front();
if (current_entry.func != f)
return ret;
if (current_entry.func_queue.empty()) {
entries.pop_front();
return ret;
}
auto& current_metadata = current_entry.func_queue.front();
if (current_metadata->loc.offset + current_entry.func->loc.offset !=
offset) {
return ret;
}
current_metadata->loc = Location(offset);
ret = std::move(current_metadata);
current_entry.func_queue.pop_front();
return ret;
}
};
class BinaryReaderIR : public BinaryReaderNop {
static constexpr size_t kMaxNestingDepth = 16384; // max depth of label stack
static constexpr size_t kMaxFunctionLocals = 50000; // matches V8
static constexpr size_t kMaxFunctionParams = 1000; // matches V8
static constexpr size_t kMaxFunctionResults = 1000; // matches V8
public:
BinaryReaderIR(Module* out_module, const char* filename, Errors* errors);
bool OnError(const Error&) override;
Result OnTypeCount(Index count) override;
Result OnFuncType(Index index,
Index param_count,
Type* param_types,
Index result_count,
Type* result_types) override;
Result OnStructType(Index index, Index field_count, TypeMut* fields) override;
Result OnArrayType(Index index, TypeMut field) override;
Result OnImportCount(Index count) override;
Result OnImportFunc(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index func_index,
Index sig_index) override;
Result OnImportTable(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index table_index,
Type elem_type,
const Limits* elem_limits) override;
Result OnImportMemory(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index memory_index,
const Limits* page_limits) override;
Result OnImportGlobal(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index global_index,
Type type,
bool mutable_) override;
Result OnImportTag(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index tag_index,
Index sig_index) override;
Result OnFunctionCount(Index count) override;
Result OnFunction(Index index, Index sig_index) override;
Result OnTableCount(Index count) override;
Result OnTable(Index index,
Type elem_type,
const Limits* elem_limits) override;
Result OnMemoryCount(Index count) override;
Result OnMemory(Index index, const Limits* limits) override;
Result OnGlobalCount(Index count) override;
Result BeginGlobal(Index index, Type type, bool mutable_) override;
Result BeginGlobalInitExpr(Index index) override;
Result EndGlobalInitExpr(Index index) override;
Result OnExportCount(Index count) override;
Result OnExport(Index index,
ExternalKind kind,
Index item_index,
std::string_view name) override;
Result OnStartFunction(Index func_index) override;
Result OnFunctionBodyCount(Index count) override;
Result BeginFunctionBody(Index index, Offset size) override;
Result OnLocalDecl(Index decl_index, Index count, Type type) override;
Result OnOpcode(Opcode opcode) override;
Result OnAtomicLoadExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnAtomicStoreExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnAtomicRmwExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnAtomicRmwCmpxchgExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnAtomicWaitExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnAtomicFenceExpr(uint32_t consistency_model) override;
Result OnAtomicNotifyExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnBinaryExpr(Opcode opcode) override;
Result OnBlockExpr(Type sig_type) override;
Result OnBrExpr(Index depth) override;
Result OnBrIfExpr(Index depth) override;
Result OnBrTableExpr(Index num_targets,
Index* target_depths,
Index default_target_depth) override;
Result OnCallExpr(Index func_index) override;
Result OnCatchExpr(Index tag_index) override;
Result OnCatchAllExpr() override;
Result OnCallIndirectExpr(Index sig_index, Index table_index) override;
Result OnCallRefExpr() override;
Result OnReturnCallExpr(Index func_index) override;
Result OnReturnCallIndirectExpr(Index sig_index, Index table_index) override;
Result OnCompareExpr(Opcode opcode) override;
Result OnConvertExpr(Opcode opcode) override;
Result OnDelegateExpr(Index depth) override;
Result OnDropExpr() override;
Result OnElseExpr() override;
Result OnEndExpr() override;
Result OnF32ConstExpr(uint32_t value_bits) override;
Result OnF64ConstExpr(uint64_t value_bits) override;
Result OnV128ConstExpr(v128 value_bits) override;
Result OnGlobalGetExpr(Index global_index) override;
Result OnGlobalSetExpr(Index global_index) override;
Result OnI32ConstExpr(uint32_t value) override;
Result OnI64ConstExpr(uint64_t value) override;
Result OnIfExpr(Type sig_type) override;
Result OnLoadExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnLocalGetExpr(Index local_index) override;
Result OnLocalSetExpr(Index local_index) override;
Result OnLocalTeeExpr(Index local_index) override;
Result OnLoopExpr(Type sig_type) override;
Result OnMemoryCopyExpr(Index srcmemidx, Index destmemidx) override;
Result OnDataDropExpr(Index segment_index) override;
Result OnMemoryFillExpr(Index memidx) override;
Result OnMemoryGrowExpr(Index memidx) override;
Result OnMemoryInitExpr(Index segment_index, Index memidx) override;
Result OnMemorySizeExpr(Index memidx) override;
Result OnTableCopyExpr(Index dst_index, Index src_index) override;
Result OnElemDropExpr(Index segment_index) override;
Result OnTableInitExpr(Index segment_index, Index table_index) override;
Result OnTableGetExpr(Index table_index) override;
Result OnTableSetExpr(Index table_index) override;
Result OnTableGrowExpr(Index table_index) override;
Result OnTableSizeExpr(Index table_index) override;
Result OnTableFillExpr(Index table_index) override;
Result OnRefFuncExpr(Index func_index) override;
Result OnRefNullExpr(Type type) override;
Result OnRefIsNullExpr() override;
Result OnNopExpr() override;
Result OnRethrowExpr(Index depth) override;
Result OnReturnExpr() override;
Result OnSelectExpr(Index result_count, Type* result_types) override;
Result OnStoreExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnThrowExpr(Index tag_index) override;
Result OnTryExpr(Type sig_type) override;
Result OnUnaryExpr(Opcode opcode) override;
Result OnTernaryExpr(Opcode opcode) override;
Result OnUnreachableExpr() override;
Result EndFunctionBody(Index index) override;
Result OnSimdLaneOpExpr(Opcode opcode, uint64_t value) override;
Result OnSimdLoadLaneExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset,
uint64_t value) override;
Result OnSimdStoreLaneExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset,
uint64_t value) override;
Result OnSimdShuffleOpExpr(Opcode opcode, v128 value) override;
Result OnLoadSplatExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnLoadZeroExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) override;
Result OnElemSegmentCount(Index count) override;
Result BeginElemSegment(Index index,
Index table_index,
uint8_t flags) override;
Result BeginElemSegmentInitExpr(Index index) override;
Result EndElemSegmentInitExpr(Index index) override;
Result OnElemSegmentElemType(Index index, Type elem_type) override;
Result OnElemSegmentElemExprCount(Index index, Index count) override;
Result OnElemSegmentElemExpr_RefNull(Index segment_index, Type type) override;
Result OnElemSegmentElemExpr_RefFunc(Index segment_index,
Index func_index) override;
Result OnDataSegmentCount(Index count) override;
Result BeginDataSegment(Index index,
Index memory_index,
uint8_t flags) override;
Result BeginDataSegmentInitExpr(Index index) override;
Result EndDataSegmentInitExpr(Index index) override;
Result OnDataSegmentData(Index index,
const void* data,
Address size) override;
Result OnModuleName(std::string_view module_name) override;
Result OnFunctionNamesCount(Index num_functions) override;
Result OnFunctionName(Index function_index,
std::string_view function_name) override;
Result OnLocalNameLocalCount(Index function_index, Index num_locals) override;
Result OnLocalName(Index function_index,
Index local_index,
std::string_view local_name) override;
Result OnNameEntry(NameSectionSubsection type,
Index index,
std::string_view name) override;
Result BeginTagSection(Offset size) override { return Result::Ok; }
Result OnTagCount(Index count) override { return Result::Ok; }
Result OnTagType(Index index, Index sig_index) override;
Result EndTagSection() override { return Result::Ok; }
Result OnDataSymbol(Index index,
uint32_t flags,
std::string_view name,
Index segment,
uint32_t offset,
uint32_t size) override;
Result OnFunctionSymbol(Index index,
uint32_t flags,
std::string_view name,
Index func_index) override;
Result OnGlobalSymbol(Index index,
uint32_t flags,
std::string_view name,
Index global_index) override;
Result OnSectionSymbol(Index index,
uint32_t flags,
Index section_index) override;
/* Code Metadata sections */
Result BeginCodeMetadataSection(std::string_view name, Offset size) override;
Result OnCodeMetadataFuncCount(Index count) override;
Result OnCodeMetadataCount(Index function_index, Index count) override;
Result OnCodeMetadata(Offset offset, const void* data, Address size) override;
Result OnTagSymbol(Index index,
uint32_t flags,
std::string_view name,
Index tag_index) override;
Result OnTableSymbol(Index index,
uint32_t flags,
std::string_view name,
Index table_index) override;
private:
Location GetLocation() const;
void PrintError(const char* format, ...);
Result PushLabel(LabelType label_type,
ExprList* first,
Expr* context = nullptr);
Result BeginInitExpr(ExprList* init_expr);
Result EndInitExpr();
Result PopLabel();
Result GetLabelAt(LabelNode** label, Index depth);
Result TopLabel(LabelNode** label);
Result TopLabelExpr(LabelNode** label, Expr** expr);
Result AppendExpr(std::unique_ptr<Expr> expr);
Result AppendCatch(Catch&& catch_);
void SetFuncDeclaration(FuncDeclaration* decl, Var var);
void SetBlockDeclaration(BlockDeclaration* decl, Type sig_type);
Result SetMemoryName(Index index, std::string_view name);
Result SetTableName(Index index, std::string_view name);
Result SetFunctionName(Index index, std::string_view name);
Result SetTypeName(Index index, std::string_view name);
Result SetGlobalName(Index index, std::string_view name);
Result SetDataSegmentName(Index index, std::string_view name);
Result SetElemSegmentName(Index index, std::string_view name);
Result SetTagName(Index index, std::string_view name);
std::string GetUniqueName(BindingHash* bindings,
const std::string& original_name);
Errors* errors_ = nullptr;
Module* module_ = nullptr;
Func* current_func_ = nullptr;
std::vector<LabelNode> label_stack_;
const char* filename_;
CodeMetadataExprQueue code_metadata_queue_;
std::string_view current_metadata_name_;
};
BinaryReaderIR::BinaryReaderIR(Module* out_module,
const char* filename,
Errors* errors)
: errors_(errors), module_(out_module), filename_(filename) {}
Location BinaryReaderIR::GetLocation() const {
Location loc;
loc.filename = filename_;
loc.offset = state->offset;
return loc;
}
void WABT_PRINTF_FORMAT(2, 3) BinaryReaderIR::PrintError(const char* format,
...) {
WABT_SNPRINTF_ALLOCA(buffer, length, format);
errors_->emplace_back(ErrorLevel::Error, Location(kInvalidOffset), buffer);
}
Result BinaryReaderIR::PushLabel(LabelType label_type,
ExprList* first,
Expr* context) {
if (label_stack_.size() >= kMaxNestingDepth) {
PrintError("label stack exceeds max nesting depth");
return Result::Error;
}
label_stack_.emplace_back(label_type, first, context);
return Result::Ok;
}
Result BinaryReaderIR::PopLabel() {
if (label_stack_.size() == 0) {
PrintError("popping empty label stack");
return Result::Error;
}
label_stack_.pop_back();
return Result::Ok;
}
Result BinaryReaderIR::GetLabelAt(LabelNode** label, Index depth) {
if (depth >= label_stack_.size()) {
PrintError("accessing stack depth: %" PRIindex " >= max: %" PRIzd, depth,
label_stack_.size());
return Result::Error;
}
*label = &label_stack_[label_stack_.size() - depth - 1];
return Result::Ok;
}
Result BinaryReaderIR::TopLabel(LabelNode** label) {
return GetLabelAt(label, 0);
}
Result BinaryReaderIR::TopLabelExpr(LabelNode** label, Expr** expr) {
CHECK_RESULT(TopLabel(label));
LabelNode* parent_label;
CHECK_RESULT(GetLabelAt(&parent_label, 1));
if (parent_label->exprs->empty()) {
PrintError("TopLabelExpr: parent label has empty expr list");
return Result::Error;
}
*expr = &parent_label->exprs->back();
return Result::Ok;
}
Result BinaryReaderIR::AppendExpr(std::unique_ptr<Expr> expr) {
expr->loc = GetLocation();
LabelNode* label;
CHECK_RESULT(TopLabel(&label));
label->exprs->push_back(std::move(expr));
return Result::Ok;
}
void BinaryReaderIR::SetFuncDeclaration(FuncDeclaration* decl, Var var) {
decl->has_func_type = true;
decl->type_var = var;
if (auto* func_type = module_->GetFuncType(var)) {
decl->sig = func_type->sig;
}
}
void BinaryReaderIR::SetBlockDeclaration(BlockDeclaration* decl,
Type sig_type) {
if (sig_type.IsIndex()) {
Index type_index = sig_type.GetIndex();
SetFuncDeclaration(decl, Var(type_index, GetLocation()));
} else {
decl->has_func_type = false;
decl->sig.param_types.clear();
decl->sig.result_types = sig_type.GetInlineVector();
}
}
std::string BinaryReaderIR::GetUniqueName(BindingHash* bindings,
const std::string& orig_name) {
int counter = 1;
std::string unique_name = orig_name;
while (bindings->count(unique_name) != 0) {
unique_name = orig_name + "." + std::to_string(counter++);
}
return unique_name;
}
bool BinaryReaderIR::OnError(const Error& error) {
errors_->push_back(error);
return true;
}
Result BinaryReaderIR::OnTypeCount(Index count) {
WABT_TRY
module_->types.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnFuncType(Index index,
Index param_count,
Type* param_types,
Index result_count,
Type* result_types) {
if (param_count > kMaxFunctionParams) {
PrintError("FuncType param count exceeds maximum value");
return Result::Error;
}
if (result_count > kMaxFunctionResults) {
PrintError("FuncType result count exceeds maximum value");
return Result::Error;
}
auto field = std::make_unique<TypeModuleField>(GetLocation());
auto func_type = std::make_unique<FuncType>();
func_type->sig.param_types.assign(param_types, param_types + param_count);
func_type->sig.result_types.assign(result_types, result_types + result_count);
module_->features_used.simd |=
std::any_of(func_type->sig.param_types.begin(),
func_type->sig.param_types.end(),
[](auto x) { return x == Type::V128; }) ||
std::any_of(func_type->sig.result_types.begin(),
func_type->sig.result_types.end(),
[](auto x) { return x == Type::V128; });
field->type = std::move(func_type);
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnStructType(Index index,
Index field_count,
TypeMut* fields) {
auto field = std::make_unique<TypeModuleField>(GetLocation());
auto struct_type = std::make_unique<StructType>();
struct_type->fields.resize(field_count);
for (Index i = 0; i < field_count; ++i) {
struct_type->fields[i].type = fields[i].type;
struct_type->fields[i].mutable_ = fields[i].mutable_;
module_->features_used.simd |= (fields[i].type == Type::V128);
}
field->type = std::move(struct_type);
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnArrayType(Index index, TypeMut type_mut) {
auto field = std::make_unique<TypeModuleField>(GetLocation());
auto array_type = std::make_unique<ArrayType>();
array_type->field.type = type_mut.type;
array_type->field.mutable_ = type_mut.mutable_;
module_->features_used.simd |= (type_mut.type == Type::V128);
field->type = std::move(array_type);
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnImportCount(Index count) {
WABT_TRY
module_->imports.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnImportFunc(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index func_index,
Index sig_index) {
auto import = std::make_unique<FuncImport>();
import->module_name = module_name;
import->field_name = field_name;
SetFuncDeclaration(&import->func.decl, Var(sig_index, GetLocation()));
module_->AppendField(
std::make_unique<ImportModuleField>(std::move(import), GetLocation()));
return Result::Ok;
}
Result BinaryReaderIR::OnImportTable(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index table_index,
Type elem_type,
const Limits* elem_limits) {
auto import = std::make_unique<TableImport>();
import->module_name = module_name;
import->field_name = field_name;
import->table.elem_limits = *elem_limits;
import->table.elem_type = elem_type;
module_->AppendField(
std::make_unique<ImportModuleField>(std::move(import), GetLocation()));
return Result::Ok;
}
Result BinaryReaderIR::OnImportMemory(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index memory_index,
const Limits* page_limits) {
auto import = std::make_unique<MemoryImport>();
import->module_name = module_name;
import->field_name = field_name;
import->memory.page_limits = *page_limits;
module_->AppendField(
std::make_unique<ImportModuleField>(std::move(import), GetLocation()));
return Result::Ok;
}
Result BinaryReaderIR::OnImportGlobal(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index global_index,
Type type,
bool mutable_) {
auto import = std::make_unique<GlobalImport>();
import->module_name = module_name;
import->field_name = field_name;
import->global.type = type;
import->global.mutable_ = mutable_;
module_->AppendField(
std::make_unique<ImportModuleField>(std::move(import), GetLocation()));
module_->features_used.simd |= (type == Type::V128);
return Result::Ok;
}
Result BinaryReaderIR::OnImportTag(Index import_index,
std::string_view module_name,
std::string_view field_name,
Index tag_index,
Index sig_index) {
auto import = std::make_unique<TagImport>();
import->module_name = module_name;
import->field_name = field_name;
SetFuncDeclaration(&import->tag.decl, Var(sig_index, GetLocation()));
module_->AppendField(
std::make_unique<ImportModuleField>(std::move(import), GetLocation()));
module_->features_used.exceptions = true;
return Result::Ok;
}
Result BinaryReaderIR::OnFunctionCount(Index count) {
WABT_TRY
module_->funcs.reserve(module_->num_func_imports + count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnFunction(Index index, Index sig_index) {
auto field = std::make_unique<FuncModuleField>(GetLocation());
Func& func = field->func;
SetFuncDeclaration(&func.decl, Var(sig_index, GetLocation()));
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnTableCount(Index count) {
WABT_TRY
module_->tables.reserve(module_->num_table_imports + count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnTable(Index index,
Type elem_type,
const Limits* elem_limits) {
auto field = std::make_unique<TableModuleField>(GetLocation());
Table& table = field->table;
table.elem_limits = *elem_limits;
table.elem_type = elem_type;
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnMemoryCount(Index count) {
WABT_TRY
module_->memories.reserve(module_->num_memory_imports + count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnMemory(Index index, const Limits* page_limits) {
auto field = std::make_unique<MemoryModuleField>(GetLocation());
Memory& memory = field->memory;
memory.page_limits = *page_limits;
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnGlobalCount(Index count) {
WABT_TRY
module_->globals.reserve(module_->num_global_imports + count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::BeginGlobal(Index index, Type type, bool mutable_) {
auto field = std::make_unique<GlobalModuleField>(GetLocation());
Global& global = field->global;
global.type = type;
global.mutable_ = mutable_;
module_->AppendField(std::move(field));
module_->features_used.simd |= (type == Type::V128);
return Result::Ok;
}
Result BinaryReaderIR::BeginGlobalInitExpr(Index index) {
assert(index == module_->globals.size() - 1);
Global* global = module_->globals[index];
return BeginInitExpr(&global->init_expr);
}
Result BinaryReaderIR::EndGlobalInitExpr(Index index) {
return EndInitExpr();
}
Result BinaryReaderIR::OnExportCount(Index count) {
WABT_TRY
module_->exports.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnExport(Index index,
ExternalKind kind,
Index item_index,
std::string_view name) {
auto field = std::make_unique<ExportModuleField>(GetLocation());
Export& export_ = field->export_;
export_.name = name;
export_.var = Var(item_index, GetLocation());
export_.kind = kind;
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::OnStartFunction(Index func_index) {
Var start(func_index, GetLocation());
module_->AppendField(
std::make_unique<StartModuleField>(start, GetLocation()));
return Result::Ok;
}
Result BinaryReaderIR::OnFunctionBodyCount(Index count) {
// Can hit this case on a malformed module if we don't stop on first error.
if (module_->num_func_imports + count != module_->funcs.size()) {
PrintError(
"number of imported func + func count in code section does not match "
"actual number of funcs in module");
return Result::Error;
}
return Result::Ok;
}
Result BinaryReaderIR::BeginFunctionBody(Index index, Offset size) {
current_func_ = module_->funcs[index];
current_func_->loc = GetLocation();
return PushLabel(LabelType::Func, ¤t_func_->exprs);
}
Result BinaryReaderIR::OnLocalDecl(Index decl_index, Index count, Type type) {
current_func_->local_types.AppendDecl(type, count);
if (current_func_->GetNumLocals() > kMaxFunctionLocals) {
PrintError("function local count exceeds maximum value");
return Result::Error;
}
module_->features_used.simd |= (type == Type::V128);
return Result::Ok;
}
Result BinaryReaderIR::OnOpcode(Opcode opcode) {
std::unique_ptr<CodeMetadataExpr> metadata =
code_metadata_queue_.pop_match(current_func_, GetLocation().offset - 1);
if (metadata) {
return AppendExpr(std::move(metadata));
}
module_->features_used.simd |= (opcode.GetResultType() == Type::V128);
return Result::Ok;
}
Result BinaryReaderIR::OnAtomicLoadExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicLoadExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnAtomicStoreExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicStoreExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnAtomicRmwExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicRmwExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnAtomicRmwCmpxchgExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicRmwCmpxchgExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnAtomicWaitExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicWaitExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnAtomicFenceExpr(uint32_t consistency_model) {
return AppendExpr(std::make_unique<AtomicFenceExpr>(consistency_model));
}
Result BinaryReaderIR::OnAtomicNotifyExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<AtomicNotifyExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnBinaryExpr(Opcode opcode) {
return AppendExpr(std::make_unique<BinaryExpr>(opcode));
}
Result BinaryReaderIR::OnBlockExpr(Type sig_type) {
auto expr = std::make_unique<BlockExpr>();
SetBlockDeclaration(&expr->block.decl, sig_type);
ExprList* expr_list = &expr->block.exprs;
CHECK_RESULT(AppendExpr(std::move(expr)));
return PushLabel(LabelType::Block, expr_list);
}
Result BinaryReaderIR::OnBrExpr(Index depth) {
return AppendExpr(std::make_unique<BrExpr>(Var(depth, GetLocation())));
}
Result BinaryReaderIR::OnBrIfExpr(Index depth) {
return AppendExpr(std::make_unique<BrIfExpr>(Var(depth, GetLocation())));
}
Result BinaryReaderIR::OnBrTableExpr(Index num_targets,
Index* target_depths,
Index default_target_depth) {
auto expr = std::make_unique<BrTableExpr>();
expr->default_target = Var(default_target_depth, GetLocation());
expr->targets.resize(num_targets);
for (Index i = 0; i < num_targets; ++i) {
expr->targets[i] = Var(target_depths[i], GetLocation());
}
return AppendExpr(std::move(expr));
}
Result BinaryReaderIR::OnCallExpr(Index func_index) {
return AppendExpr(std::make_unique<CallExpr>(Var(func_index, GetLocation())));
}
Result BinaryReaderIR::OnCallIndirectExpr(Index sig_index, Index table_index) {
auto expr = std::make_unique<CallIndirectExpr>();
SetFuncDeclaration(&expr->decl, Var(sig_index, GetLocation()));
expr->table = Var(table_index, GetLocation());
return AppendExpr(std::move(expr));
}
Result BinaryReaderIR::OnCallRefExpr() {
return AppendExpr(std::make_unique<CallRefExpr>());
}
Result BinaryReaderIR::OnReturnCallExpr(Index func_index) {
return AppendExpr(
std::make_unique<ReturnCallExpr>(Var(func_index, GetLocation())));
}
Result BinaryReaderIR::OnReturnCallIndirectExpr(Index sig_index,
Index table_index) {
auto expr = std::make_unique<ReturnCallIndirectExpr>();
SetFuncDeclaration(&expr->decl, Var(sig_index, GetLocation()));
expr->table = Var(table_index, GetLocation());
return AppendExpr(std::move(expr));
}
Result BinaryReaderIR::OnCompareExpr(Opcode opcode) {
return AppendExpr(std::make_unique<CompareExpr>(opcode));
}
Result BinaryReaderIR::OnConvertExpr(Opcode opcode) {
return AppendExpr(std::make_unique<ConvertExpr>(opcode));
}
Result BinaryReaderIR::OnDropExpr() {
return AppendExpr(std::make_unique<DropExpr>());
}
Result BinaryReaderIR::OnElseExpr() {
LabelNode* label;
Expr* expr;
CHECK_RESULT(TopLabelExpr(&label, &expr));
if (label->label_type == LabelType::If) {
auto* if_expr = cast<IfExpr>(expr);
if_expr->true_.end_loc = GetLocation();
label->exprs = &if_expr->false_;
label->label_type = LabelType::Else;
} else {
PrintError("else expression without matching if");
return Result::Error;
}
return Result::Ok;
}
Result BinaryReaderIR::OnEndExpr() {
if (label_stack_.size() > 1) {
LabelNode* label;
Expr* expr;
CHECK_RESULT(TopLabelExpr(&label, &expr));
switch (label->label_type) {
case LabelType::Block:
cast<BlockExpr>(expr)->block.end_loc = GetLocation();
break;
case LabelType::Loop:
cast<LoopExpr>(expr)->block.end_loc = GetLocation();
break;
case LabelType::If:
cast<IfExpr>(expr)->true_.end_loc = GetLocation();
break;
case LabelType::Else:
cast<IfExpr>(expr)->false_end_loc = GetLocation();
break;
case LabelType::Try:
cast<TryExpr>(expr)->block.end_loc = GetLocation();
break;
case LabelType::InitExpr:
case LabelType::Func:
case LabelType::Catch:
break;
}
}
return PopLabel();
}
Result BinaryReaderIR::OnF32ConstExpr(uint32_t value_bits) {
return AppendExpr(
std::make_unique<ConstExpr>(Const::F32(value_bits, GetLocation())));
}
Result BinaryReaderIR::OnF64ConstExpr(uint64_t value_bits) {
return AppendExpr(
std::make_unique<ConstExpr>(Const::F64(value_bits, GetLocation())));
}
Result BinaryReaderIR::OnV128ConstExpr(v128 value_bits) {
return AppendExpr(
std::make_unique<ConstExpr>(Const::V128(value_bits, GetLocation())));
}
Result BinaryReaderIR::OnGlobalGetExpr(Index global_index) {
return AppendExpr(
std::make_unique<GlobalGetExpr>(Var(global_index, GetLocation())));
}
Result BinaryReaderIR::OnLocalGetExpr(Index local_index) {
return AppendExpr(
std::make_unique<LocalGetExpr>(Var(local_index, GetLocation())));
}
Result BinaryReaderIR::OnI32ConstExpr(uint32_t value) {
return AppendExpr(
std::make_unique<ConstExpr>(Const::I32(value, GetLocation())));
}
Result BinaryReaderIR::OnI64ConstExpr(uint64_t value) {
return AppendExpr(
std::make_unique<ConstExpr>(Const::I64(value, GetLocation())));
}
Result BinaryReaderIR::OnIfExpr(Type sig_type) {
auto expr = std::make_unique<IfExpr>();
SetBlockDeclaration(&expr->true_.decl, sig_type);
ExprList* expr_list = &expr->true_.exprs;
CHECK_RESULT(AppendExpr(std::move(expr)));
return PushLabel(LabelType::If, expr_list);
}
Result BinaryReaderIR::OnLoadExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<LoadExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnLoopExpr(Type sig_type) {
auto expr = std::make_unique<LoopExpr>();
SetBlockDeclaration(&expr->block.decl, sig_type);
ExprList* expr_list = &expr->block.exprs;
CHECK_RESULT(AppendExpr(std::move(expr)));
return PushLabel(LabelType::Loop, expr_list);
}
Result BinaryReaderIR::OnMemoryCopyExpr(Index srcmemidx, Index destmemidx) {
return AppendExpr(std::make_unique<MemoryCopyExpr>(
Var(srcmemidx, GetLocation()), Var(destmemidx, GetLocation())));
}
Result BinaryReaderIR::OnDataDropExpr(Index segment) {
return AppendExpr(
std::make_unique<DataDropExpr>(Var(segment, GetLocation())));
}
Result BinaryReaderIR::OnMemoryFillExpr(Index memidx) {
return AppendExpr(
std::make_unique<MemoryFillExpr>(Var(memidx, GetLocation())));
}
Result BinaryReaderIR::OnMemoryGrowExpr(Index memidx) {
return AppendExpr(
std::make_unique<MemoryGrowExpr>(Var(memidx, GetLocation())));
}
Result BinaryReaderIR::OnMemoryInitExpr(Index segment, Index memidx) {
return AppendExpr(std::make_unique<MemoryInitExpr>(
Var(segment, GetLocation()), Var(memidx, GetLocation())));
}
Result BinaryReaderIR::OnMemorySizeExpr(Index memidx) {
return AppendExpr(
std::make_unique<MemorySizeExpr>(Var(memidx, GetLocation())));
}
Result BinaryReaderIR::OnTableCopyExpr(Index dst_index, Index src_index) {
return AppendExpr(std::make_unique<TableCopyExpr>(
Var(dst_index, GetLocation()), Var(src_index, GetLocation())));
}
Result BinaryReaderIR::OnElemDropExpr(Index segment) {
return AppendExpr(
std::make_unique<ElemDropExpr>(Var(segment, GetLocation())));
}
Result BinaryReaderIR::OnTableInitExpr(Index segment, Index table_index) {
return AppendExpr(std::make_unique<TableInitExpr>(
Var(segment, GetLocation()), Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnTableGetExpr(Index table_index) {
return AppendExpr(
std::make_unique<TableGetExpr>(Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnTableSetExpr(Index table_index) {
return AppendExpr(
std::make_unique<TableSetExpr>(Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnTableGrowExpr(Index table_index) {
return AppendExpr(
std::make_unique<TableGrowExpr>(Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnTableSizeExpr(Index table_index) {
return AppendExpr(
std::make_unique<TableSizeExpr>(Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnTableFillExpr(Index table_index) {
return AppendExpr(
std::make_unique<TableFillExpr>(Var(table_index, GetLocation())));
}
Result BinaryReaderIR::OnRefFuncExpr(Index func_index) {
return AppendExpr(
std::make_unique<RefFuncExpr>(Var(func_index, GetLocation())));
}
Result BinaryReaderIR::OnRefNullExpr(Type type) {
return AppendExpr(std::make_unique<RefNullExpr>(type));
}
Result BinaryReaderIR::OnRefIsNullExpr() {
return AppendExpr(std::make_unique<RefIsNullExpr>());
}
Result BinaryReaderIR::OnNopExpr() {
return AppendExpr(std::make_unique<NopExpr>());
}
Result BinaryReaderIR::OnRethrowExpr(Index depth) {
return AppendExpr(std::make_unique<RethrowExpr>(Var(depth, GetLocation())));
}
Result BinaryReaderIR::OnReturnExpr() {
return AppendExpr(std::make_unique<ReturnExpr>());
}
Result BinaryReaderIR::OnSelectExpr(Index result_count, Type* result_types) {
TypeVector results;
results.assign(result_types, result_types + result_count);
return AppendExpr(std::make_unique<SelectExpr>(results));
}
Result BinaryReaderIR::OnGlobalSetExpr(Index global_index) {
return AppendExpr(
std::make_unique<GlobalSetExpr>(Var(global_index, GetLocation())));
}
Result BinaryReaderIR::OnLocalSetExpr(Index local_index) {
return AppendExpr(
std::make_unique<LocalSetExpr>(Var(local_index, GetLocation())));
}
Result BinaryReaderIR::OnStoreExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<StoreExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnThrowExpr(Index tag_index) {
return AppendExpr(std::make_unique<ThrowExpr>(Var(tag_index, GetLocation())));
}
Result BinaryReaderIR::OnLocalTeeExpr(Index local_index) {
return AppendExpr(
std::make_unique<LocalTeeExpr>(Var(local_index, GetLocation())));
}
Result BinaryReaderIR::OnTryExpr(Type sig_type) {
auto expr_ptr = std::make_unique<TryExpr>();
// Save expr so it can be used below, after expr_ptr has been moved.
TryExpr* expr = expr_ptr.get();
ExprList* expr_list = &expr->block.exprs;
SetBlockDeclaration(&expr->block.decl, sig_type);
CHECK_RESULT(AppendExpr(std::move(expr_ptr)));
module_->features_used.exceptions = true;
return PushLabel(LabelType::Try, expr_list, expr);
}
Result BinaryReaderIR::AppendCatch(Catch&& catch_) {
LabelNode* label = nullptr;
CHECK_RESULT(TopLabel(&label));
if (label->label_type != LabelType::Try) {
PrintError("catch not inside try block");
return Result::Error;
}
auto* try_ = cast<TryExpr>(label->context);
if (catch_.IsCatchAll() && !try_->catches.empty() &&
try_->catches.back().IsCatchAll()) {
PrintError("only one catch_all allowed in try block");
return Result::Error;
}
if (try_->kind == TryKind::Plain) {
try_->kind = TryKind::Catch;
} else if (try_->kind != TryKind::Catch) {
PrintError("catch not allowed in try-delegate");
return Result::Error;
}
try_->catches.push_back(std::move(catch_));
label->exprs = &try_->catches.back().exprs;
return Result::Ok;
}
Result BinaryReaderIR::OnCatchExpr(Index except_index) {
return AppendCatch(Catch(Var(except_index, GetLocation())));
}
Result BinaryReaderIR::OnCatchAllExpr() {
return AppendCatch(Catch(GetLocation()));
}
Result BinaryReaderIR::OnDelegateExpr(Index depth) {
LabelNode* label = nullptr;
CHECK_RESULT(TopLabel(&label));
if (label->label_type != LabelType::Try) {
PrintError("delegate not inside try block");
return Result::Error;
}
auto* try_ = cast<TryExpr>(label->context);
if (try_->kind == TryKind::Plain) {
try_->kind = TryKind::Delegate;
} else if (try_->kind != TryKind::Delegate) {
PrintError("delegate not allowed in try-catch");
return Result::Error;
}
try_->delegate_target = Var(depth, GetLocation());
PopLabel();
return Result::Ok;
}
Result BinaryReaderIR::OnUnaryExpr(Opcode opcode) {
return AppendExpr(std::make_unique<UnaryExpr>(opcode));
}
Result BinaryReaderIR::OnTernaryExpr(Opcode opcode) {
return AppendExpr(std::make_unique<TernaryExpr>(opcode));
}
Result BinaryReaderIR::OnUnreachableExpr() {
return AppendExpr(std::make_unique<UnreachableExpr>());
}
Result BinaryReaderIR::EndFunctionBody(Index index) {
current_func_ = nullptr;
if (!label_stack_.empty()) {
PrintError("function %" PRIindex " missing end marker", index);
return Result::Error;
}
return Result::Ok;
}
Result BinaryReaderIR::OnSimdLaneOpExpr(Opcode opcode, uint64_t value) {
return AppendExpr(std::make_unique<SimdLaneOpExpr>(opcode, value));
}
Result BinaryReaderIR::OnSimdLoadLaneExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset,
uint64_t value) {
return AppendExpr(std::make_unique<SimdLoadLaneExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset, value));
}
Result BinaryReaderIR::OnSimdStoreLaneExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset,
uint64_t value) {
return AppendExpr(std::make_unique<SimdStoreLaneExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset, value));
}
Result BinaryReaderIR::OnSimdShuffleOpExpr(Opcode opcode, v128 value) {
return AppendExpr(std::make_unique<SimdShuffleOpExpr>(opcode, value));
}
Result BinaryReaderIR::OnLoadSplatExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<LoadSplatExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnLoadZeroExpr(Opcode opcode,
Index memidx,
Address alignment_log2,
Address offset) {
return AppendExpr(std::make_unique<LoadZeroExpr>(
opcode, Var(memidx, GetLocation()), 1 << alignment_log2, offset));
}
Result BinaryReaderIR::OnElemSegmentCount(Index count) {
WABT_TRY
module_->elem_segments.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::BeginElemSegment(Index index,
Index table_index,
uint8_t flags) {
auto field = std::make_unique<ElemSegmentModuleField>(GetLocation());
ElemSegment& elem_segment = field->elem_segment;
elem_segment.table_var = Var(table_index, GetLocation());
if ((flags & SegDeclared) == SegDeclared) {
elem_segment.kind = SegmentKind::Declared;
} else if ((flags & SegPassive) == SegPassive) {
elem_segment.kind = SegmentKind::Passive;
} else {
elem_segment.kind = SegmentKind::Active;
}
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::BeginInitExpr(ExprList* expr) {
return PushLabel(LabelType::InitExpr, expr);
}
Result BinaryReaderIR::BeginElemSegmentInitExpr(Index index) {
assert(index == module_->elem_segments.size() - 1);
ElemSegment* segment = module_->elem_segments[index];
return BeginInitExpr(&segment->offset);
}
Result BinaryReaderIR::EndInitExpr() {
if (!label_stack_.empty()) {
PrintError("init expression missing end marker");
return Result::Error;
}
return Result::Ok;
}
Result BinaryReaderIR::EndElemSegmentInitExpr(Index index) {
return EndInitExpr();
}
Result BinaryReaderIR::OnElemSegmentElemType(Index index, Type elem_type) {
assert(index == module_->elem_segments.size() - 1);
ElemSegment* segment = module_->elem_segments[index];
segment->elem_type = elem_type;
return Result::Ok;
}
Result BinaryReaderIR::OnElemSegmentElemExprCount(Index index, Index count) {
assert(index == module_->elem_segments.size() - 1);
ElemSegment* segment = module_->elem_segments[index];
WABT_TRY
segment->elem_exprs.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::OnElemSegmentElemExpr_RefNull(Index segment_index,
Type type) {
assert(segment_index == module_->elem_segments.size() - 1);
ElemSegment* segment = module_->elem_segments[segment_index];
Location loc = GetLocation();
ExprList init_expr;
init_expr.push_back(std::make_unique<RefNullExpr>(type, loc));
segment->elem_exprs.push_back(std::move(init_expr));
return Result::Ok;
}
Result BinaryReaderIR::OnElemSegmentElemExpr_RefFunc(Index segment_index,
Index func_index) {
assert(segment_index == module_->elem_segments.size() - 1);
ElemSegment* segment = module_->elem_segments[segment_index];
Location loc = GetLocation();
ExprList init_expr;
init_expr.push_back(std::make_unique<RefFuncExpr>(Var(func_index, loc), loc));
segment->elem_exprs.push_back(std::move(init_expr));
return Result::Ok;
}
Result BinaryReaderIR::OnDataSegmentCount(Index count) {
WABT_TRY
module_->data_segments.reserve(count);
WABT_CATCH_BAD_ALLOC
return Result::Ok;
}
Result BinaryReaderIR::BeginDataSegment(Index index,
Index memory_index,
uint8_t flags) {
auto field = std::make_unique<DataSegmentModuleField>(GetLocation());
DataSegment& data_segment = field->data_segment;
data_segment.memory_var = Var(memory_index, GetLocation());
if ((flags & SegPassive) == SegPassive) {
data_segment.kind = SegmentKind::Passive;
} else {
data_segment.kind = SegmentKind::Active;
}
module_->AppendField(std::move(field));
return Result::Ok;
}
Result BinaryReaderIR::BeginDataSegmentInitExpr(Index index) {
assert(index == module_->data_segments.size() - 1);
DataSegment* segment = module_->data_segments[index];
return BeginInitExpr(&segment->offset);
}
Result BinaryReaderIR::EndDataSegmentInitExpr(Index index) {
return EndInitExpr();
}
Result BinaryReaderIR::OnDataSegmentData(Index index,
const void* data,
Address size) {
assert(index == module_->data_segments.size() - 1);
DataSegment* segment = module_->data_segments[index];
segment->data.resize(size);
if (size > 0) {
memcpy(segment->data.data(), data, size);
}
return Result::Ok;
}
Result BinaryReaderIR::OnFunctionNamesCount(Index count) {
if (count > module_->funcs.size()) {
PrintError("expected function name count (%" PRIindex
") <= function count (%" PRIzd ")",
count, module_->funcs.size());
return Result::Error;
}
return Result::Ok;
}
static std::string MakeDollarName(std::string_view name) {
return std::string("$") + std::string(name);
}
Result BinaryReaderIR::OnModuleName(std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
module_->name = MakeDollarName(name);
return Result::Ok;
}
Result BinaryReaderIR::SetGlobalName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->globals.size()) {
PrintError("invalid global index: %" PRIindex, index);
return Result::Error;
}
Global* glob = module_->globals[index];
std::string dollar_name =
GetUniqueName(&module_->global_bindings, MakeDollarName(name));
glob->name = dollar_name;
module_->global_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetFunctionName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->funcs.size()) {
PrintError("invalid function index: %" PRIindex, index);
return Result::Error;
}
Func* func = module_->funcs[index];
std::string dollar_name =
GetUniqueName(&module_->func_bindings, MakeDollarName(name));
func->name = dollar_name;
module_->func_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetTypeName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->types.size()) {
PrintError("invalid type index: %" PRIindex, index);
return Result::Error;
}
TypeEntry* type = module_->types[index];
std::string dollar_name =
GetUniqueName(&module_->type_bindings, MakeDollarName(name));
type->name = dollar_name;
module_->type_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetTableName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->tables.size()) {
PrintError("invalid table index: %" PRIindex, index);
return Result::Error;
}
Table* table = module_->tables[index];
std::string dollar_name =
GetUniqueName(&module_->table_bindings, MakeDollarName(name));
table->name = dollar_name;
module_->table_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetDataSegmentName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->data_segments.size()) {
PrintError("invalid data segment index: %" PRIindex, index);
return Result::Error;
}
DataSegment* segment = module_->data_segments[index];
std::string dollar_name =
GetUniqueName(&module_->data_segment_bindings, MakeDollarName(name));
segment->name = dollar_name;
module_->data_segment_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetElemSegmentName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->elem_segments.size()) {
PrintError("invalid elem segment index: %" PRIindex, index);
return Result::Error;
}
ElemSegment* segment = module_->elem_segments[index];
std::string dollar_name =
GetUniqueName(&module_->elem_segment_bindings, MakeDollarName(name));
segment->name = dollar_name;
module_->elem_segment_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetMemoryName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->memories.size()) {
PrintError("invalid memory index: %" PRIindex, index);
return Result::Error;
}
Memory* memory = module_->memories[index];
std::string dollar_name =
GetUniqueName(&module_->memory_bindings, MakeDollarName(name));
memory->name = dollar_name;
module_->memory_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::SetTagName(Index index, std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
if (index >= module_->tags.size()) {
PrintError("invalid tag index: %" PRIindex, index);
return Result::Error;
}
Tag* tag = module_->tags[index];
std::string dollar_name =
GetUniqueName(&module_->tag_bindings, MakeDollarName(name));
tag->name = dollar_name;
module_->tag_bindings.emplace(dollar_name, Binding(index));
return Result::Ok;
}
Result BinaryReaderIR::OnFunctionName(Index index, std::string_view name) {
return SetFunctionName(index, name);
}
Result BinaryReaderIR::OnNameEntry(NameSectionSubsection type,
Index index,
std::string_view name) {
switch (type) {
// TODO(sbc): remove OnFunctionName in favor of just using
// OnNameEntry so that this works
case NameSectionSubsection::Function:
case NameSectionSubsection::Local:
case NameSectionSubsection::Module:
case NameSectionSubsection::Label:
break;
case NameSectionSubsection::Type:
SetTypeName(index, name);
break;
case NameSectionSubsection::Tag:
SetTagName(index, name);
break;
case NameSectionSubsection::Global:
SetGlobalName(index, name);
break;
case NameSectionSubsection::Table:
SetTableName(index, name);
break;
case NameSectionSubsection::DataSegment:
SetDataSegmentName(index, name);
break;
case NameSectionSubsection::Memory:
SetMemoryName(index, name);
break;
case NameSectionSubsection::ElemSegment:
SetElemSegmentName(index, name);
break;
}
return Result::Ok;
}
Result BinaryReaderIR::OnLocalNameLocalCount(Index index, Index count) {
assert(index < module_->funcs.size());
Func* func = module_->funcs[index];
Index num_params_and_locals = func->GetNumParamsAndLocals();
if (count > num_params_and_locals) {
PrintError("expected local name count (%" PRIindex
") <= local count (%" PRIindex ")",
count, num_params_and_locals);
return Result::Error;
}
return Result::Ok;
}
Result BinaryReaderIR::BeginCodeMetadataSection(std::string_view name,
Offset size) {
current_metadata_name_ = name;
return Result::Ok;
}
Result BinaryReaderIR::OnCodeMetadataFuncCount(Index count) {
return Result::Ok;
}
Result BinaryReaderIR::OnCodeMetadataCount(Index function_index, Index count) {
code_metadata_queue_.push_func(module_->funcs[function_index]);
return Result::Ok;
}
Result BinaryReaderIR::OnCodeMetadata(Offset offset,
const void* data,
Address size) {
std::vector<uint8_t> data_(static_cast<const uint8_t*>(data),
static_cast<const uint8_t*>(data) + size);
auto meta = std::make_unique<CodeMetadataExpr>(current_metadata_name_,
std::move(data_));
meta->loc.offset = offset;
code_metadata_queue_.push_metadata(std::move(meta));
return Result::Ok;
}
Result BinaryReaderIR::OnLocalName(Index func_index,
Index local_index,
std::string_view name) {
if (name.empty()) {
return Result::Ok;
}
Func* func = module_->funcs[func_index];
func->bindings.emplace(GetUniqueName(&func->bindings, MakeDollarName(name)),
Binding(local_index));
return Result::Ok;
}
Result BinaryReaderIR::OnTagType(Index index, Index sig_index) {
auto field = std::make_unique<TagModuleField>(GetLocation());
Tag& tag = field->tag;
SetFuncDeclaration(&tag.decl, Var(sig_index, GetLocation()));
module_->AppendField(std::move(field));
module_->features_used.exceptions = true;
return Result::Ok;
}
Result BinaryReaderIR::OnDataSymbol(Index index,
uint32_t flags,
std::string_view name,
Index segment,
uint32_t offset,
uint32_t size) {
if (name.empty()) {
return Result::Ok;
}
if (flags & WABT_SYMBOL_FLAG_UNDEFINED) {
// Refers to data in another file, `segment` not valid.
return Result::Ok;
}
if (offset) {
// If it is pointing into the data segment, then it's not really naming
// the whole segment.
return Result::Ok;
}
if (segment >= module_->data_segments.size()) {
PrintError("invalid data segment index: %" PRIindex, segment);
return Result::Error;
}
DataSegment* seg = module_->data_segments[segment];
std::string dollar_name =
GetUniqueName(&module_->data_segment_bindings, MakeDollarName(name));
seg->name = dollar_name;
module_->data_segment_bindings.emplace(dollar_name, Binding(segment));
return Result::Ok;
}
Result BinaryReaderIR::OnFunctionSymbol(Index index,
uint32_t flags,
std::string_view name,
Index func_index) {
if (name.empty()) {
return Result::Ok;
}
if (func_index >= module_->funcs.size()) {
PrintError("invalid function index: %" PRIindex, func_index);
return Result::Error;
}
Func* func = module_->funcs[func_index];
if (!func->name.empty()) {
// The name section has already named this function.
return Result::Ok;
}
std::string dollar_name =
GetUniqueName(&module_->func_bindings, MakeDollarName(name));
func->name = dollar_name;
module_->func_bindings.emplace(dollar_name, Binding(func_index));
return Result::Ok;
}
Result BinaryReaderIR::OnGlobalSymbol(Index index,
uint32_t flags,
std::string_view name,
Index global_index) {
return SetGlobalName(global_index, name);
}
Result BinaryReaderIR::OnSectionSymbol(Index index,
uint32_t flags,
Index section_index) {
return Result::Ok;
}
Result BinaryReaderIR::OnTagSymbol(Index index,
uint32_t flags,
std::string_view name,
Index tag_index) {
if (name.empty()) {
return Result::Ok;
}
if (tag_index >= module_->tags.size()) {
PrintError("invalid tag index: %" PRIindex, tag_index);
return Result::Error;
}
Tag* tag = module_->tags[tag_index];
std::string dollar_name =
GetUniqueName(&module_->tag_bindings, MakeDollarName(name));
tag->name = dollar_name;
module_->tag_bindings.emplace(dollar_name, Binding(tag_index));
return Result::Ok;
}
Result BinaryReaderIR::OnTableSymbol(Index index,
uint32_t flags,
std::string_view name,
Index table_index) {
return SetTableName(table_index, name);
}
} // end anonymous namespace
Result ReadBinaryIr(const char* filename,
const void* data,
size_t size,
const ReadBinaryOptions& options,
Errors* errors,
Module* out_module) {
BinaryReaderIR reader(out_module, filename, errors);
return ReadBinary(data, size, &reader, options);
}
} // namespace wabt